JPH116286A - Veranda step scaffolding - Google Patents

Abstract

(57) [Problem] To provide a step scaffold for a veranda capable of stably grounding a ladder to a floor of the veranda. SOLUTION: A scaffold main body 4 in which a ladder 3 grounded to a floor F of the veranda R is connected to a rear end of a tread plate 2 arranged so as to straddle a handrail T of the veranda R, and a frame scaffold. K
And a horizontal member for attaching the front end of the step board 2 to the vertical frame P. The ladder 3 has a pair of left and right extendable legs 12, 12 which can extend and contract independently. It is characterized by the following.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a veranda step for allowing a building such as a condominium or the like having a veranda to enter and exit between a framed scaffolding installed on the outer wall of the building and the veranda portion. It is about scaffolding.

[0002]

2. Description of the Related Art Various types of such step scaffolds for verandas have been conventionally proposed, such as that described in Japanese Utility Model Registration No. 2515524.

[0003]

In a conventional step scaffold for a veranda, a ladder connected to a tread plate of a scaffold body includes:
The length of the upper frame and the lower frame can be adjusted freely, but since the left and right ladder frames expand and contract integrally, for example, even if the veranda floor is horizontal, the tread plate side is mounted horizontally. Otherwise, if there is sand or other material on the veranda floor, the left and right legs cannot be securely grounded to the veranda floor, causing the ladder to become unstable. I was In addition, the handrails on the scaffold main body side provided on the left and right sides of the tread plate and the handrails on the framework scaffold side provided on the front left and right portions of the handrails are connected at the same level. Therefore, depending on the height position of the scaffolding board of the framework scaffolding, the height of the handrailing part on the framework scaffolding side as a safety fence of the scaffolding board may be too low to function as a handrailing. Was.

[0004] In view of the above problems, the present invention can stabilize the grounding of the ladder to the floor of the veranda, and even if the height position of the scaffold plate of the framework scaffold is changed, The railing section can effectively function as a safety fence for a scaffold plate, and can be folded compactly to provide a step scaffold for a veranda that is easy to carry and store.

[0005]

The step scaffold for a veranda according to the first aspect of the present invention comprises a floor F of the veranda R at a rear end portion of the tread plate 2 arranged so as to straddle the handrail T of the veranda R. A scaffold body 4 formed by connecting ladders 3 to be grounded,
The ladder 3 is horizontally suspended between the vertical frames P, P of the framed scaffold K, and is made of a horizontal material for attaching the front end of the tread plate 2.
2 and 12.

A step scaffold for a veranda according to a second aspect of the present invention is a ladder 3 grounded to the floor F of the veranda R at the rear end of the tread plate 2 arranged so as to straddle the handrail T of the veranda R. And a horizontal member for mounting the front end of the tread plate 2, and a horizontal member for mounting the front end of the tread plate 2, and a horizontal member for attaching the front end of the tread plate 2 to the horizontal member. And a pair of left and right handrails 6 and 6 erected in a substantially L-shape in plan view over the left and right portions of each handrail.
Consists of a rectangular frame-shaped scaffolding body side handrail portion 6a and a horizontal material side handrail portion 6b, and both handrail portions 6a, 6b
Are connected relatively slidably up and down.

According to a third aspect, in the step scaffold for a veranda according to the first or second aspect, the ladder 3 of the scaffold main body 4 is provided.
Is a ladder body 11 having a plurality of step rods 10 provided on a pair of left and right side frames 9 connected to the tread plate 2, and a pair of left and right expandable and contractible independently supported on the side frames 9, 9 respectively. It is characterized by comprising legs 12,12.

According to a fourth aspect of the present invention, in the step scaffold for a veranda according to the third aspect, the telescopic legs 12 are interposed between the respective side frames 9 of the ladder main body 11 and the respective telescopic legs 12 to fix the telescopic legs 12 at required positions. The locking means 14 is attached to the side frame 9 with a number of lock holes 17 provided at a constant pitch in the longitudinal direction of the telescopic leg 12, and the bolt tip can be engaged with the lock hole 17, Bolt 19 whose screw portion 19a can be screwed into the screw hole 18 of the side frame, and a compression coil spring 20 for urging the knob bolt 19 in the direction opposite to the lock hole 17.
And a stopper 21 for holding the knob bolt 19 so that the tip of the knob bolt 19 whose screw portion 19a has come off from the screw hole 18 is disengaged from the lock hole 17 against the urging force of the spring 20. Reference numeral 19 denotes a telescopic leg 12 whose tip is engaged with a required lock hole 17.
A lock position for fixing the bolt to the side frame 9, an open position where the bolt tip is released from the lock hole 17 and the extensible leg 12 is freely slid with respect to the side frame 9, and a bolt tip for the urging force of the spring 20. Are elastically contacted with the entrance of the lock hole 17 in a semi-engaged state so that the telescopic leg 12 can be slid with respect to the side frame 9, and is set at three positions: a semi-open position. I do.

According to a fifth aspect of the present invention, in the step scaffold for a veranda according to any one of the first to third aspects, an auxiliary step 13 is slidably provided on the pair of left and right telescopic legs 12, 12. .

According to a sixth aspect of the present invention, in the step scaffold for a veranda according to the fifth aspect, each of the telescopic legs 12 and the auxiliary step 1 are provided.
A lock means 15 interposed between the extension step 3 and the auxiliary step 13 is provided with a plurality of lock holes 17 provided in the telescopic leg 12 at a constant pitch in the longitudinal direction thereof, and a plurality of lock holes 17 on the auxiliary step 13 side. A knob bolt 19 which is attached, a bolt tip can be engaged with the lock hole 17, and a screw portion 19 a of the bolt base end can be screwed into the screw hole 18 on the auxiliary step 13 side, and the knob bolt 19 faces the lock hole 17. A compression coil spring 20 that urges in the direction, and the knob bolt 19 is held so that the tip of the knob bolt 19 in which the screw portion 19a is disengaged from the screw hole 18 is disengaged from the lock hole 17 against the urging force of the spring 20. The knob bolt 19 has a lock position for fixing the auxiliary step 13 to the telescopic leg 12 by engaging the tip of the knob bolt 19 with a required lock hole 17. When the lock bolt tip holes 17
The auxiliary step is released by allowing the auxiliary step 13 to be freely slid with respect to the telescopic leg 12 by detaching the bolt from the opening, and by causing the bolt tip to elastically contact the entrance of the lock hole 17 in a semi-engaged state by the biasing force of the spring 20. 13 is set at three positions, that is, a semi-open position in which the sliding member 13 can be slid with respect to the telescopic leg 12.

According to a seventh aspect of the present invention, in the step scaffold for a veranda according to any one of the first to sixth aspects, the tread plate 2 and the ladder 3 of the scaffold main body 4 are foldable.

According to an eighth aspect of the present invention, there is provided the step scaffold for a veranda according to any one of the first to seventh aspects, wherein the front end of the tread plate 2 of the scaffold main body 4 has a downward U-shaped cross section which can be fitted into a horizontal member from above. The fitting groove 7 is provided, and a fixing wing bolt 8 is attached to a side wall 7a of the fitting groove 7.

According to a ninth aspect of the present invention, in the step scaffold for a veranda according to any one of the first to eighth aspects, the horizontal member has a pair of upper and lower horizontal rods 5a each having both ends attached to the vertical frame P of the framed scaffold K. , 5b and a plurality of vertical rods 5c connecting the two horizontal rods 5a, 5b.

According to a tenth aspect of the present invention, in the step scaffold for a veranda according to any one of the first to eighth aspects, the horizontal member is a single tube 51 having both ends attached to the vertical frame P of the framed scaffold K. And

According to an eleventh aspect, in the step scaffold for a veranda according to any one of the second to tenth aspects, the handrail part 6a on the scaffold main body side and the handrail part 6b on the horizontal member side are both handrail parts 6a, 6b. Opposing inner inner vertical frame portions 31a, 33a
One of the inner vertical frame portions 31a and 33a forming the two pivots is connected so as to be rotatable around the other by a rotating bracket 35 interposed therebetween.

According to a twelfth aspect, in the step scaffold for a veranda according to any one of the second to eleventh aspects, the handrail part 6a on the scaffold body side and the handrail part 6b on the horizontal member side are both handrail parts 6a, 6b. Are vertically slidably connected by a rotating bracket 35 interposed between the opposed inner vertical frame portions 31a, 33a.

According to a thirteenth aspect, in the veranda step scaffold according to any one of the second to twelfth aspects, the handrail part 6a on the scaffold body side and the handrail part 6b on the horizontal member side are both handrail parts 6a, 6b. One handrail is rotatably connected to the other handrail by 360 degrees by a rotating bracket 35 interposed between the opposed inner vertical frame portions 31a and 33a.

According to a fourteenth aspect, in the step scaffold for a veranda according to the thirteenth aspect, the handrail portion 6 on the scaffold main body side is provided.
a and the vertical member side handrails 6b,
34 is provided, and a locking hook 42 is provided on the middle vertical frame portion 32 of one handrail portion. The hook 42 is rotatably attached to the middle vertical frame portion 32 so that its base shaft portion is movable in the axial direction and rotatable. It is pivotally supported and urged by a spring 43 in a direction to pull the hook tip toward the middle vertical frame portion 32. When both handrails 6a and 6b are folded together, the hook tip is moved to the other side. The handrail portion is engaged with the locking hole 44 of the middle vertical frame portion 34.

According to a fifteenth aspect of the present invention, in the step scaffold for a veranda according to any one of the second to fourteenth aspects, the handrail portion 6a on the scaffold main body is provided on the tread plate 2 from the lower horizontal frame portion 31b. Knob bolt 4 screwed into 39
0 and is fixed to the tread 2 by the horizontal material side handrail portion 6b.
Is fixed to the vertical frame P of the framework scaffold K by the scaffold clamp 41 attached to the outer vertical frame portion 33c.

According to a sixteenth aspect, in the step scaffold for a veranda according to any one of the ninth to eleventh aspects, the upper and lower horizontal rods 5a and 5b forming the rooted frame 5 are provided at both ends. An elastic member 45 for adjusting the length is provided, and both ends of the upper horizontal rod 5a are fixed to the vertical frame P of the framed scaffold K by the scaffold clamp 41 attached to the elastic member 45.
, And both ends of the lower horizontal rod 5b are
And is fixed to the vertical frame P by a U-shaped frame piece 46 fitted to the vertical frame P of the framework scaffold K and a fixing wing bolt 48 attached to an open end of the U-shaped frame piece 46. It is characterized by that.

According to a seventeenth aspect of the present invention, in the step scaffold for a veranda according to any one of the tenth to sixteenth aspects, both ends of the single tube 51 are framed by a scaffold clamp 41.
Is fixed to the vertical frame P.

[0022]

DESCRIPTION OF THE PREFERRED EMBODIMENTS FIG. 1 shows an embodiment of a veranda step scaffold 1 according to the present invention, which is provided between a frame scaffold K and a veranda R installed on an outer wall of a building. 2 is a side view, FIG. 3 is a front view as viewed from the outside of the veranda, and FIG. 4 is a plan view. As can be seen from these drawings, this step scaffold 1 is made of a handrail T of a veranda R.
A scaffold body 4 formed by connecting a ladder 3 grounded to the floor F of the veranda R to a rear end portion of the tread plate 2 disposed so as to straddle the upper side, and opposes near the outer wall portion of the building in the framework scaffold K. Lower horizontal rod 5b of horizontal frame 5 as a horizontal member which is horizontally mounted between vertical frames P and P and to which the front end of the step board 2 is attached.
And a pair of left and right handrails 6 and 6 erected in a substantially L-shape in plan view over the left and right sides of the tread plate 2 and the left and right portions of the lower horizontal rod 5b. In FIG. 1 to FIG. 4, S is a scaffold plate spanned between the opposing horizontal frames Q, Q of the framework scaffold K, and G is a cross stitch.

FIGS. 6 to 11 show the detailed structure of the scaffold main body 4. FIG. First, as shown in FIGS. 6 and 7, the front end of the tread plate 2 forming the scaffold main body 4 together with the ladder 3 can be fitted to the lower horizontal rod 5 b (horizontal member) of the frame 5 from above. A fitting groove 7 having a downward U-shaped cross section is provided in the entire region in the left-right width direction, and fixing wing bolts 8 are attached to the outer wall 7a of the fitting groove 7 at two places on the left and right.
The fitting groove 7 is made of a U-shaped section with a downward cross section. The step board 2 and the ladder 3 are pivotally connected so as to be foldable.

As can be seen from FIGS. 8 and 9, the ladder 3 of the scaffold main body 4 includes a ladder main body 11 formed by connecting and fixing a plurality of step rods 10 to a pair of left and right hollow side frames 9, 9, and both side frames. A pair of left and right telescopic legs 12, 12 independently fitted to and supported by telescopic members 9, 9, respectively, and auxiliary steps 13 slidably attached to the two telescopic legs 12, 12, respectively. A pair of left and right hollow slide frames 13a, 13a externally fitted to the telescopic legs 12, 12,
It is formed by a step rod 10b integrally connected between the slide frames 13a, 13a. And, between each side frame 9 of the ladder main body 11 and the telescopic legs 12 fitted therein, locking means 14 for fixing each telescopic leg 12 at a required position of each side frame 9 is provided, Locking means 15 is provided between each telescopic leg 12 and each slide frame 13a of the auxiliary step 13 fitted to the telescopic leg 12 to fix the auxiliary step 13 at a required position of each telescopic leg 12. .

A lock means 14 for fixing each telescopic leg 12 at a required position of each side frame 9 will be described with reference to FIG. 10. This lock means 14 is disposed and fixed along the inner surface of the telescopic leg 12. A number of lock holes 17 provided at a constant pitch in the longitudinal direction of the band-shaped base plate 16 and a side frame 9 of the ladder main body 11 are attached so as to be orthogonal to the lock holes 17, and a bolt tip is provided with the lock hole 17. , And the screw portion 19a at the base end of the bolt is fixed to the side frame 9 by the nut 18.
A compression coil spring 20 for urging the knob bolt 19 in a direction opposite to the lock hole 17;
Knob bolt 1 with screw portion 19a disengaged from nut 18
And a stopper 21 for holding the knob bolt 19 so that the tip end of the knob 9 is disengaged from the lock hole 17 against the urging force of the coil spring 19.
Passes through the groove 22 between the opposing ridges 9 a, 9 a protruding into the side frame 9, passes through the bolt insertion hole 23 opened in the partition wall 9 b in front of it, and faces the lock hole 17. Installed. The stopper 21 is provided with the knob bolt 19
And a roll pin fixed to this so as to be orthogonal to. A knob 19b is attached to the base end of the knob bolt 19.

Therefore, when fixing each telescopic leg 12 to the side frame 9 of the ladder main body 11, the screw portion 19a is screwed into the nut 18 of the side frame 9 while grasping the knob 19b and pushing and turning the knob bolt 19. By screwing in, the tip of the bolt may be engaged with the required lock hole 17. That is, the knob bolt 19 is set to the lock position as shown in FIG. At this time, the stopper 21 is located on the front side of the ridges 9a, 9a projecting into the side frame 9 as shown in FIG.

From the above locked position, each telescopic leg 1
In order to release (unlock) the side 2 from the side frame 9 of the ladder main body 11, the knob bolt 19 is turned in the opposite direction to rotate the screw portion 19a.
Is removed from the nut 18 of the side frame 9, and the stopper 21 is pulled out of the groove 22 between the ridges 9 a, 9 a while pulling the knob bolt 19 against the biasing force of the coil spring 20 to pull out the stopper 21. By bringing the knob bolt 19 into contact with the front side surface, the knob bolt 19 is held at an open position as shown in FIG. 10C, whereby the telescopic leg 12 can be slid freely with respect to the side frame 9.

When adjusting the length of each of the telescopic legs 12, if the telescopic legs 12 are slid while the knob bolt 19 is kept in the open position as shown in FIG. It is difficult to confirm the position of the hole 17, and it is particularly difficult to make fine adjustments. Therefore, in that case, as shown in FIG.
a, and the screw portion 19a is detached from the nut 18 so that the tip of the knob bolt 19 is elastically contacted with the entrance of the lock hole 17 in a semi-engaged state by the urging force of the coil spring 20. In this case, when the telescopic leg 12 is slid, the tip of the knob bolt 19 hits the entrance of each of the lock holes 17 with a click, so that the position of the lock hole 17 can be easily confirmed, and any necessary The telescopic leg 12 can be stopped at the position, and fine adjustment is particularly easy.

The structure and operation of the lock means 14 for fixing the telescopic legs 12 at the required positions of the side frames 9 have been described above. The lock means for fixing the auxiliary step 13 at the required positions of the telescopic legs 12 has been described. 15 is exactly the same as the configuration and operation of the lock means 14 except that the side frame 9 of the ladder main body 11 is replaced with the slide frame 13a of the auxiliary step 13 in the description of the lock means 14 and the illustration of FIG. Therefore, the description is omitted.

As described above, the ladder 3 of the scaffold body 4
A pair of left and right telescopic legs 12, 1 that can be extended and retracted independently
2, the floor F of the veranda R and the veranda R
In consideration of the height of the surface and the horizontality of the floor F surface, by adjusting the expansion and contraction of both the extensible legs 12, 12, the grounding of the ladder 3 to the floor F surface of the veranda R is ensured and stable. can do. In addition, since the auxiliary step 13 is slidably provided on both of the telescopic legs 12, 12, the veranda R
When the height from the floor F surface to the tread 2 is relatively high,
If the auxiliary step 13 is fixed at an appropriate height, the ladder 3 can be easily and safely moved up and down by using the auxiliary step 13.

FIGS. 11 and 12 show a folding structure of the tread plate 2 and the ladder 3. A pair of left and right brackets 24, 24 attached to both sides of the rear end of the tread plate 2, and an upper end of the ladder body 11 are shown. A pair of left and right brackets 25, 25 attached to both sides are pivotally connected by a pivot 26 so that the ladder 3 can be folded with respect to the tread plate 2 as shown in FIGS. In addition, between the step board 2 and the ladder main body 11, the step board 2 and the ladder 3 are fixed to a use position as shown in FIG. 1A and a folding position as shown in FIG. Is interposed.

The lock mechanism is, as shown in FIG.
A lock hole 26 for the use position and a lock hole 27 for the fold position are provided on the bracket 25 on the side of the ladder main body 11 on a circumference of a constant radius centered on the pivot 26, while the rear end of the tread plate 2 is provided in the left-right direction. As shown in FIG. 12, a pair of right and left substantially U-shaped lock pins 29, 29 each having a longer upper side and a shorter lower side are provided in the groove 28 provided.
a so as to be slidable, and the upper side pin body 29b, 2
9b is engaged with a through hole (not shown) of the bracket 24 on the tread plate 2 side, and each lock pin 29 is fixed by a coil spring 30 interposed between each upper side pin body 29b and the tread plate 2 side. It is biased outward.

Then, the step board 2 and the ladder 3 are connected as shown in FIG.
12 (A), the lock pins 29 are engaged with the use position lock holes 26 of the ladder main body 11 side bracket 25 at the outer ends of the upper side pin main bodies 29b, respectively. ). When folding the step board 2 and the ladder 3 in the above-mentioned use position, both the lock pins 29, 29 are pulled inward against the coil spring 30 as shown in FIG. The outer ends of the upper side pin bodies 29b, 29b are
When the ladder 3 is rotated in the folding direction as shown in FIG. 11 (B) after being pulled out of the upper side 26, the outer ends of the upper side pin bodies 29b, 29b are folded at the folding position as shown in FIG. 11 (C). Lock holes 27, 27, and the tread plate 2
And the ladder 3 are fixed in the folded position.

FIG. 13 shows a pair of left and right handrails 6, 6 standing upright and substantially L-shaped in plan view over the left and right sides of the tread plate 2 and the left and right portions of the lower horizontal rod 5b (horizontal member). Are shown. The scaffolding body side handrail portion 6a includes a vertically long rectangular peripheral frame 31 and a middle vertical frame portion 32, and the horizontal material side handrail portion 6a.
“b” is composed of a vertically-long rectangular peripheral frame 33 and a middle vertical frame portion 34 having a larger vertical width and a horizontal width than the scaffolding body side handrail portion 6a. Then, the scaffolding body side handrail portion 6a and the horizontal material side handrail portion 6b
Means both inner vertical frame portions 3 of both handrail portions 6a, 6b opposed to each other.
The rotation fitting 35 interposed between 1a and 33a
One of the two inner vertical frame portions 31a and 33a forming one pivot is connected so as to be able to rotate 360 degrees around the other.

As shown in FIG. 14A, the rotating bracket 35 is provided with an inner vertical frame portion 31a of the handrail portion 6a on the scaffold main body side.
A first member 36, which has a pair of connecting pieces 36b protruding from a cylindrical sleeve 36a rotatably fitted to the first member 36, and a cylindrical frame 33a rotatably fitted to the inner vertical frame portion 33a of the horizontal member side handrail portion 6b. The second in which a pair of connecting pieces 37b protrude from the sleeve 37a.
A cylindrical sleeve 36a of the first member 36 is fitted into the inner vertical frame portion 31a,
The cylindrical sleeve 37a of the member 37 is fitted to the inner vertical frame portion 33a, and the two connecting pieces 36b, 37b are fixed with the fixing member 38, thereby being attached as shown in FIG. The first member 36 is non-slidably held at a fixed position of the inner vertical frame portion 31a of the scaffolding body side handrail portion 6a, for example, at the upper end portion, and the second member 37 is held at the horizontal material side handrail portion 6b. It is slidable up and down along the inner vertical frame portion 33a.

As shown in FIG. 13, the scaffolding body side handrail portion 6a is screwed from a lower horizontal frame portion 31b of the peripheral frame 31 into a nut 39 (shown in FIG. 6) provided inside the tread plate 2 side. The horizontal member-side handrail portion 6b is fixed to the tread plate 2 by a knob bolt 40 (described later).
Is fixed to the vertical frame P of the framed scaffold K by well-known scaffold clamps 41 attached to two upper and lower portions of the outer vertical frame portion 33c of the peripheral frame 33. (B) of FIG.
And (C) shows the outer vertical frame portion 33 of the horizontal material side handrail portion 6b.
It is the enlarged plan view and the enlarged front view which show the scaffold clamp 41 attached to c.

FIG. 15 shows a state in which the handrail section 6a on the scaffold main body side and the handrail section 6b on the horizontal member side of the handrail 6 are folded. In this case, the middle vertical frame portion 32 of the handrail portion 6a on the scaffold body side
The middle vertical frame portion 32 and the middle vertical frame portion 34 of the horizontal material side handrail portion 6b are connected to each other by the locking hook 42 attached to the rail, so that the both handrail portions 6a and 6b can be fixed in a folded state. I have to. As shown in FIGS. 16 (A) and (B), the locking hook 42 is provided on the middle vertical frame portion 32 so that the hook base shaft portion 42a is axially movable and rotatable. The hook tip 42b is supported by the coil spring 43 so as to urge the hook tip 42b in a direction of drawing toward the middle vertical frame 32, and the two handrails 6a, 6b are folded together to hold the hook tip 42b. The horizontal member-side handrail portion 6b is engaged with a locking hole 44 provided in the middle vertical frame portion 34, thereby connecting the two middle vertical frame portions 32 and 34.

FIG. 17 shows the root frame 5 which is composed of an upper horizontal rod 5a, a lower horizontal rod 5b, and a vertical horizontal rod 5b.
It is formed in a horizontally long rectangular frame shape by a plurality of vertical rods 5c connecting a and 5b. At both ends of each of the upper and lower horizontal bars 5a and 5b, an elastic member 45 for adjusting the length is provided, and each of the elastic members 45 on the upper horizontal rod 5a side is fixed to the vertical frame P of the framed scaffold K. A well-known scaffold clamp 41 is attached, and a U-shaped frame piece 46 that fits into the vertical frame P of the framed scaffold K is fixed to each of the elastic members 45 on the lower horizontal rod 5b side.
In the field of construction, the term “negarami” (negarami) refers to a cross member attached to a bundle (tsuka) or the like so as not to move below.

As shown in FIGS. 18 and 19, the elastic member 45 is formed of a U-shaped member fitted to each end of each of the upper and lower horizontal rods 5a, 5b, and penetrates both plate members 45a, 45a. Bolts 4 which are inserted into the long holes 45b, 45b from the respective ends of the horizontal rods 5a, 5b.
6 and nut 47 at the required telescopic position.
b. As shown in FIG. 19, a fixing wing bolt 48 is attached to an open end of the U-shaped frame piece 46 fixed to each of the elastic members 45 on the side of the lower horizontal rod 5b.

In order to attach both ends of the frame 5 to the vertical frames P, P of the framed scaffold K, the length of the upper and lower horizontal rods 5a, 5b is adjusted by the pitch between the vertical frames P, P. After adjusting the expansion and contraction in advance by the expansion and contraction members 45 in accordance with the above, the root frame 5 is inserted into both the vertical frames P, P, and the scaffold clamps 41, 41 on the upper horizontal rod 5a side and the lower horizontal rod 5b side. U-shaped frame pieces 46, 46
In this case, the length of the upper and lower horizontal rods 5a and 5b may need to be finely adjusted. In this case, the scaffold on the upper horizontal rod 5a side is required. The clamp 41 is previously opened, and the U-shaped frame piece 46 on the lower horizontal rod 5b side is temporarily fixed to the vertical frame P with a fixing wing bolt 48,
If the fixing wing bolts 48 and the scaffold clamps 41 are finally tightened after the fine adjustment by the expansion and contraction member 45 is completed, the work of attaching the root frame 5 can be performed efficiently.

FIG. 20 shows a state in which the tread plate 2 of the scaffold main body 4 is attached to the lower horizontal bar 5b (horizontal member) of the frame 5 attached between the vertical frames P, P of the framework scaffold K as described above. And a state in which the handrail portion 6a of the handrail 6 on the scaffold main body side is attached to the tread plate 2. To attach the tread plate 2 to the lower horizontal rod 5b of the root frame 5, the U-shaped fitting groove 7 at the front end of the tread plate 2 is fitted into the lower horizontal rod 5b of the root frame 5 from above, Tightening each fixing wing bolt 8 allows easy and easy mounting. In this case, as shown in FIG. 17, an engagement hole 49 is provided at a predetermined position on the front surface of the lower horizontal rod 5b of the bottom frame 5 so that the tip of each fixing wing bolt 8 is connected to the engagement hole. By engaging with the step 49, the positioning at the time of attaching the tread plate 2 becomes easy.

Then, the handrail portion 6 of the handrail 6 on the scaffold main body side is provided.
In order to attach a to the step board 2, as shown in FIG. 20A, the lower horizontal frame portion 31b of each scaffold body side handrail section 6a is placed on each of the left and right side ends of the step board 2. Knob bolt 40
May be screwed into the nut 39 (see FIG. 6) on the side of the tread plate 2. As shown in FIGS. 20A and 20B, an engagement projection 50a is provided at the center of the lower surface of the lower horizontal frame portion 31b, and the engagement projection 50a is provided on the tread plate 2 side. , The positioning of the scaffolding body-side handrail portion 6a is facilitated. In order to attach the horizontal member side handrail portion 6b of the handrail 6 to the vertical frame P of the framed scaffold K, as shown in FIG. 13, the scaffold attached to the outer vertical frame portion 33c of the horizontal member side handrail portion 6b. What is necessary is just to fix the clamp 41 to the vertical frame P. As shown in FIG. 20C, the knob bolt 40 is screwed into a nut 40a provided in the lower horizontal frame portion 31b of the handrail portion 6a on the scaffold body, and moves the lower horizontal frame portion 31b up and down. The knob 40b and the lower horizontal frame 3
A compression coil spring 40c is interposed between the compression coil spring 40c and the upper surface 1b.

When the handrail section 6a on the scaffold main body side and the handrail section 6b on the horizontal member side of the handrail 6 are attached to the vertical frame P side of the frame 5 and the framed scaffold K from the tread plate 2 side. Since the handrails 6a and 6b are relatively slidable up and down, when the scaffold S adjacent to the horizontal handrail 6b is at a relatively high position, the horizontal handrail is used. The portion 6b may be slid upward with respect to the handrail portion 6a on the scaffold body side and fixed to the vertical frame P of the framed scaffold K. When the scaffold plate S is at a relatively low position, the handrail portion on the horizontal member side is used. What is necessary is just to slide down 6b with respect to the handrail part 6a on the scaffold main body side, and to fix it to the vertical frame P. As described above, since the height of the horizontal member side handrail portion 6b can be adjusted according to the height position of the scaffold plate S, the horizontal member side handrail portion 6b can function effectively as a safety fence of the scaffold plate S. it can.

In attaching the handrail 6, the pitch between the vertical frames P of the framed scaffold K is generally 180.
There are two types, 0 mm and 1829 mm. If the scaffolding body side handrails 6 a and the horizontal material side handrails 6 b are pivotally connected by ordinary joints, the pitch is 1800 mm. And 1829 mm, there may be a difference in the mounting width of the horizontal member-side handrail portion 6b, so that mounting may not be possible. However, in the present invention, the scaffolding body side handrail portion 6a and the horizontal material side handrail portion 6b are formed by the inner vertical frame portions 31a, 33a of both handrail portions 6a, 6b.
Since one of the inner vertical frame portions 31a and 33a forming the two pivots is connected to each other so as to be able to rotate 360 degrees around the other by the rotating bracket 35 interposed therebetween, for example, the above 1800 mm By preparing the scaffolding body side handrail portion 6a having a length corresponding to the pitch, when the pitch is 1800 mm, as shown in FIG. The horizontal member-side handrail portion 6b fixed to P may be arranged and attached at a fixed position as it is, or when the pitch is 1829 mm, as shown in FIG. Vertical frame P
The horizontal member side handrail portion 6b fixed to the
5, the outer vertical frame portion 33c of the horizontal material side handrail portion 6b can be attached to the vertical frame P by slightly moving it toward the vertical frame P indicated by an arrow in FIG. Therefore, in either case, the handrails 6a and 6b can be properly attached in a substantially L-shape in plan view.

Since the step scaffold 1 described with reference to FIGS. 1 to 20 uses the root frame 5, the lower horizontal rod 5 b of the root frame 5 connects the tread plate 2 of the scaffold body 4. It becomes a horizontal material to be attached, and the upper horizontal rod 5a of the frame 5
Can be used as a step rod when the worker M goes up and down the step scaffold 1 as shown in FIG. Bold arrows shown in FIG. 2 indicate a process in which the worker M descends from the scaffold S to the tread 2 using the upper horizontal bar 5a as shown in FIG.

FIGS. 21 and 22 show the step scaffold 1 using the root frame 5. In this case, the scaffold S closer to the step scaffold 1 is positioned lower than the handrail T of the veranda R. Therefore, the upper horizontal bar 5a of the frame 5 is used as a horizontal member for mounting a tread plate. The lower horizontal rod 5b of the root frame 5 can be used as a step rod when the worker M goes up and down the step scaffold 1 as shown in FIG.
A thick arrow shown in FIG. 21 indicates that the worker M uses the lower horizontal bar 5b from the scaffold S as shown in FIG.
2 shows a process of climbing to the step board 2.

FIGS. 23 and 24 show the step scaffold 1 in the case where a single pipe 51 is used as the horizontal member for mounting the tread plate instead of the above-described root frame 5. Both ends of this single tube 51 are respectively connected to both vertical frames P,
Fixed to P. 25 (A), the fitting groove 7 at the front end of the tread plate 2 is fitted into the single tube 51 from above, and the fixing wing bolt 8 is fixed. The lower end of the single tube 51 is pressed and fixed at the tip.

When the single tube 51 is used as the horizontal member, the single tube 51 protrudes from the rear side of the vertical frame P by the diameter of the single tube 51 as shown in FIG. ,
The handrail part 6a on the scaffold main body side of the handrail 6 is not orthogonal to the handrail part 6b on the horizontal member side, and as shown in FIG. 90 for 6a
It crosses at an angle slightly larger than the degree. In such a case as well, the scaffolding body side handrail portion 6a and the horizontal material side handrail portion 6b form the inner vertical frame portion 31 of both handrail portions 6a, 6b.
Since one of the inner vertical frame portions 31a and 33a forming the two pivots is connected to each other so as to be able to rotate 360 degrees around the other by the rotating bracket 35 interposed between the a and 33a. While the handrail part 6a on the scaffold main body is erected at the fixed position of the tread plate 2, the handrail part 6b on the horizontal material side is moved in FIG.
As shown in (B), it can be appropriately inclined, so that the horizontal member side handrail portion 6b can be properly attached. Further, if the single pipe 51 is used as the horizontal member, the configuration of the step scaffold 1 becomes very simple, and the assembling becomes easy.

[0049]

According to the first aspect of the present invention, the step scaffold is
A simple step scaffold consisting of a scaffolding body with a ladder connected to the floor of the veranda at the rear end of the tread and a horizontal member for attaching the front end of the tread.The ladders are independent of each other. Ladder to the floor of the veranda by appropriately adjusting the length of the left and right telescopic legs in consideration of the height of the horizontal material and the floor of the veranda, and the degree of horizontality, since it has a pair of left and right telescopic legs that can be extended and retracted. Grounding can be ensured to be stable.

According to a second aspect of the present invention, in the step scaffold, the scaffold main body, the horizontal member, the left and right side portions of the tread of the scaffold main body and the left and right portions of the horizontal member are each substantially L-shaped in plan view. Each handrail is composed of a rectangular frame-shaped scaffolding body side handrail part and a horizontal material side handrail part, and both handrail parts are relatively up and down. When the scaffold plate close to the horizontal material handrail is at a relatively high position because it is slidably connected, the horizontal material handrail is moved according to the height of the scaffold plate. It is only necessary to slide it upward to the frame and fix it to the vertical frame of the scaffolding scaffold.If the scaffolding plate is at a relatively low position, slide the horizontal material side handrail part downward with respect to the scaffold body side handrail part. What is necessary is just to fix it to a vertical frame. in this way,
Since the height of the horizontal member side handrail can be adjusted by the position of the scaffold plate, the horizontal member side handrail can effectively function as a safety fence of the scaffold plate.

According to a third aspect of the present invention, the ladder of the scaffold main body has a plurality of step rods provided on a pair of left and right side frames connected to the tread plate, and is independently and elastically supported on both side frames. A ladder having a simple structure having the telescopic legs can be provided by forming the pair of left and right telescopic legs.

According to a fourth aspect of the present invention, locking means interposed between each side frame of the ladder main body and each telescopic leg for fixing the telescopic leg at a required position is provided on the telescopic leg at a constant pitch. A large number of lock holes, a knob bolt in which a screw portion of a bolt base end can be screwed into a screw hole of a side frame, a compression coil spring for urging the knob bolt in a direction facing the lock hole, and a tip end portion of the knob bolt. It consists of a stopper that holds the knob bolt so that it comes off from the lock hole against the urging force of the spring,
Since the knob bolt is set at three positions: a lock position, an open position, and a semi-open position, when adjusting the length of each telescopic leg, the knob bolt is set to the half-open position. By sliding the telescopic legs, the tip of the knob bolt hits the entrance of each lock hole with a click, so that the position of the lock hole can be easily checked, and the telescopic leg can be easily moved to any desired position. It can be stopped, and particularly the fine adjustment of the telescopic legs can be easily performed.

According to the fifth aspect of the present invention, the auxiliary step is slidably provided on both of the telescopic legs so that when the telescopic leg is extended, the auxiliary step is used to easily and safely raise and lower the ladder. It can be carried out.

According to the sixth aspect, similarly to the fourth aspect, the expansion and contraction adjustment of the auxiliary step, particularly the fine adjustment thereof, can be easily performed.

If the step board of the scaffold main body and the telescopic ladder are made foldable, it is convenient to carry and store the scaffold main body.

According to an eighth aspect of the present invention, a U-shaped fitting groove is provided at the front end of the tread plate of the scaffold main body so that the fitting can be fitted into the horizontal member from above. By attaching the wing bolt, it is possible to easily and easily attach the tread plate to the horizontal member.

According to a ninth aspect of the present invention, the horizontal member is formed by a pair of upper and lower horizontal rods each attached to a vertical frame of a framed scaffold and a plurality of vertical rods connecting both horizontal rods. If one of the upper and lower horizontal bars in the frame is used, the horizontal bar that is not used for the horizontal member can be used as a step bar, which is effective for ascending and descending to the step scaffold.

If a single pipe whose both ends are attached to the vertical frame of the framed scaffold is used as the horizontal member, the structure of the step scaffold becomes very simple and the assembling becomes easy.

According to another aspect of the present invention, the handrail portion of the handrail on the scaffold main body side and the handrail portion on the horizontal member side are separated into two pivots by rotating fittings interposed between the inner vertical frame portions of both handrail portions. When one of the two inner vertical frame portions forming is connected so as to be able to rotate around the other, the vertical frame pitch of the framed scaffold may be slightly changed in mounting the horizontal material side handrail portion, Even if the positions of the inner vertical frame portions of the both handrails slightly fluctuate, the horizontal member-side handrails can be appropriately moved by the rotating metal fittings, whereby the handrails can be properly mounted.

According to a twelfth aspect, the handrail part on the scaffold main body side and the handrail part on the horizontal member side can be relatively slid up and down by means of a rotary fitting interposed between the inner vertical frame parts of both handrail parts. If it is connected to the horizontal handrail, the height can be adjusted by the position of the scaffold plate, the horizontal handrail can be appropriately moved, and both handrails can be properly mounted. .

According to a thirteenth aspect, the handrail portion on the scaffold main body side and the handrail portion on the horizontal member side are connected to one of the handrail portions by a rotary fitting interposed between the inner vertical frame portions of both handrail portions. By connecting the other handrail so that it can rotate 360 degrees, both handrails can be folded together, which is convenient for carrying and storing.

According to the fourteenth aspect, since both handrails can be fixed in a state where both handrails are folded together, it is more convenient to carry and store.

According to the fifteenth aspect, the handrail portion on the scaffold main body is fixed to the tread plate by a knob bolt screwed from a lower horizontal frame portion to a nut provided on the tread plate side, and the handrail portion on the horizontal member side is Since the scaffold clamp attached to the outer vertical frame portion is fixed to the vertical frame of the framed scaffold, the mounting work of both handrail portions can be performed quickly and easily.

According to the sixteenth aspect, an elastic member for adjusting the length is provided at each end of each of the upper and lower horizontal rods forming the rooted frame, and both ends of the upper horizontal rod are attached to the elastic member. A U-shaped frame piece which is fixed to the vertical frame of the framework scaffold by the attached scaffold clamp, and both ends of the lower horizontal bar are attached to the expandable member and fit into the vertical frame of the frame scaffold; It is configured to be fixed to the vertical frame by a fixing wing bolt attached to the opening end of the frame, so that by adjusting the expansion and contraction member, the rooted frame can be adjusted according to the vertical frame pitch of the framework scaffold. Can be installed properly. In addition, to attach both ends of the frame to the vertical frame of the framed scaffold, adjust the length of the upper and lower horizontal rods to the pitch of both vertical frames by adjusting the length of each elastic member in advance, and then The frames can be inserted into both vertical frames and fixed to both vertical frames using the scaffold clamps on the upper and lower horizontal rods and the U-shaped frame pieces on the lower horizontal rod side. In some cases, it is necessary to open the scaffold clamp on the upper horizontal rod side, and temporarily fix the U-shaped frame piece on the lower horizontal rod side to the vertical frame with a fixing wing bolt, If the fixing wing bolts and the scaffold clamps are finally tightened after finishing the fine adjustment by the above, the work of mounting the frame can be performed efficiently.

According to the seventeenth aspect, since both ends of the single tube are fixed to the vertical frame of the framework scaffold by the scaffold clamp, the single tube can be easily attached to the vertical frame.

[Brief description of the drawings]

FIG. 1 is a schematic perspective view showing an example of a veranda step scaffold.

FIG. 2 is a side view of the step scaffold.

FIG. 3 is a front view of the step scaffold viewed from the outside of the veranda.

FIG. 4 is a plan view of the step scaffold.

FIGS. 5A and 5B are enlarged plan views of corner portions of a handrail portion on the scaffold main body side and a handrail portion on the horizontal member side.

FIG. 6 is a plan view showing a tread plate of the scaffold main body.

FIG. 7 is a side view of the tread plate.

8A is a side view of the scaffold main body, and FIG. 8B is a front view of the scaffold main body viewed from behind, showing a state in which only one of the extensible legs is extended.

9 (A) is a side view of the scaffold main body, and FIG. 9 (B) is a front view of the scaffold main body as viewed from behind, showing a state where both extendable legs are fully extended.

FIGS. 10A to 10C are cross-sectional views showing an operation state of a lock means in the ladder.

FIGS. 11A to 11C are explanatory diagrams showing a folded structure of a tread plate and a ladder and an operation thereof.

FIGS. 12A and 12B are explanatory views showing a lock mechanism in a folding structure of a tread plate and a ladder.

FIG. 13 is a front view showing a handrail portion on the scaffold main body side and a handrail portion on the horizontal member side of the handrail in a planar state.

FIG. 14A is an enlarged cross-sectional view taken along line XX of FIG. 13;
(B) is a top view of the scaffold clamp attached to the horizontal material side handrail part side, (C) is a front view of the same scaffold clamp.

FIG. 15A is a plan view of the handrail in a state where the handrail part on the scaffold main body side and the handrail part on the horizontal member side are folded.
Is a front view thereof.

16A is an enlarged sectional view taken along line YY of FIG. 15B, and FIG. 16B is a side view of FIG.

FIG. 17 is a front view showing a root frame.

FIG. 18A is an enlarged front view of the end of the upper horizontal rod of the frame, and FIG. 18B is a plan view thereof.

FIG. 19A is an enlarged front view of the end of the lower horizontal bar of the root frame, and FIG. 19B is a plan view thereof.

FIGS. 20A and 20B show a state in which the tread plate 2 of the scaffold main body is attached to the lower horizontal rod of the root frame, and a state in which the handrail part of the scaffold body side of the handrail is attached to this tread plate. (C) is an enlarged view of the knob bolt attached to the scaffolding body side handrail portion.

FIG. 21 is a side view showing another example of the veranda step scaffold.

FIG. 22 is a front view of the step scaffold as viewed from the outside of the veranda.

FIG. 23 (A) is a side view showing still another example of the veranda step scaffold, and FIG. 23 (B) is a front view of the same step scaffold viewed from the outside of the veranda.

FIG. 24 is a plan view of the same step scaffold.

25A is a side view showing a state in which the front end of the tread plate is attached to a single tube, and FIG. 25B is an enlarged view of a portion surrounded by a circle indicated by an arrow Z in FIG.

[Explanation of symbols]

 K framed scaffolding P framed scaffolding vertical frame 1 veranda step scaffolding 2 treadboard 3 ladder 4 scaffold body 5 rooted frame 5a rooted frame top horizontal bar 5b rooted frame bottom horizontal bar 6 handrails 6a platform footing Side handrail part 6b Horizontal material side handrail part 7 Fitting groove 8 Fixing wing bolt 9 Side frame of ladder body 10 Step rod of ladder body 12 Telescopic leg 13 Auxiliary step 14 Lock means 15 Lock means 19 Knob bolt 35 Rotating bracket 40 Knob bolt 41 Scaffold clamp 45 Telescopic member

Claims (17)

[Claims] 1. A scaffold body comprising a ladder grounded to the floor of a veranda connected to a rear end of a tread plate arranged so as to straddle the handrail of the veranda, and a horizontal frame between a vertical frame of the framework scaffold. A step scaffold for a veranda, comprising a horizontal member for mounting a front end portion of the tread plate, wherein the ladder has a pair of left and right extendable legs which can be independently extended and contracted. 2. A scaffolding body comprising a ladder grounded on the floor of a veranda connected to a rear end of a tread plate disposed so as to straddle on a handrail of a veranda, and a horizontal frame between a vertical frame of a framed scaffold. A horizontal member for mounting the front end of the tread plate,
It consists of a pair of left and right handrails, each of which is erected in a substantially L-shape in plan view, over the left and right side portions of the tread plate and the left and right portions of the horizontal member, and each handrail is a rectangular frame-shaped scaffold body. A step scaffold for a veranda, comprising a side handrail portion and a horizontal material side handrail portion, wherein both handrail portions are relatively slidably connected to each other. 3. A ladder of a scaffold body comprising a pair of left and right side frames connected to a tread plate and a plurality of step rods, and a pair of left and right independently supported by the both side frames so as to extend and contract. The step scaffold for a veranda according to claim 1 or 2, comprising a telescopic leg. 4. A locking means interposed between each side frame of the ladder main body and each telescopic leg for fixing the telescopic leg at a required position is provided on the telescopic leg at a constant pitch in the longitudinal direction thereof. A knob bolt that is attached to a side frame and a bolt that can be engaged with the lock hole at the tip end of the bolt and a threaded part at the base end of the bolt can be screwed into the threaded hole of the side frame. A compression coil spring for urging in the direction, and a stopper for holding the knob bolt so that the screw portion is detached from the lock hole against the urging force of the spring, the tip of the knob bolt coming off the screw hole, The knob bolt has a lock position where its tip is engaged with a required lock hole to fix the telescopic leg to the side frame, and the bolt tip is detached from the lock hole to freely slide the telescopic leg with respect to the side frame. Open position and With the urging force of the spring, the tip of the bolt is elastically contacted with the entrance of the lock hole in a semi-engaged state so that the telescopic leg can be slid with respect to the side frame. The step scaffold for a veranda according to claim 3, which is provided. 5. An auxiliary step is slidably provided on a pair of left and right telescopic legs.
The step scaffold for a veranda according to any one of the above. 6. A locking means interposed between each telescopic leg and the auxiliary step for fixing the auxiliary step at a required position comprises a plurality of lock holes provided in the telescopic leg at a constant pitch in the longitudinal direction. A knob bolt which is attached to the auxiliary step side, a bolt tip can be engaged with the lock hole, and a screw part of the bolt base end can be screwed into the screw hole of the auxiliary step;
A compression coil spring for urging the knob bolt in a direction opposite to the lock hole, and the knob bolt is held so that a threaded portion of the knob bolt disengaged from the screw hole is separated from the lock hole against the urging force of the spring. Consists of a stopper,
The knob bolt has a lock position where its tip is engaged with a required lock hole to fix the auxiliary step to the telescopic leg, and the bolt step is released from the lock hole to freely slide the auxiliary step with respect to the telescopic leg. The auxiliary step is set to three positions: an open position to be made, and a semi-open position where the auxiliary step can be slid with respect to the extendable leg by making the tip of the bolt elastically contact the entrance of the lock hole in a semi-engaged state by the urging force of the spring. The step scaffold for a veranda according to claim 5, characterized in that the step scaffold is used. 7. The step scaffold for a veranda according to claim 1, wherein the step board and the ladder of the scaffold main body are foldable. 8. A front end portion of the tread plate of the scaffold main body is provided with a downwardly U-shaped fitting groove capable of fitting into a horizontal member from above, and a fixing wing bolt is provided on a side wall of the fitting groove. The step scaffold for a veranda according to any one of claims 1 to 7, which is attached. 9. The horizontal member comprises a pair of upper and lower horizontal bars attached to the vertical frame of the framed scaffold at both ends and a plurality of vertical bars connecting the two horizontal bars. The step scaffold for a veranda according to any one of claims 1 to 8, wherein the scaffold is any one of a horizontal rod. 10. The horizontal member is a single tube having both ends attached to a vertical frame of a framed scaffold.
8. The step scaffold for a veranda according to any one of 8. 11. The handrail part on the scaffold main body side and the handrail part on the horizontal member side are formed with two rotating shafts interposed between both inner vertical frame parts of the handrail parts facing each other to form two pivots. The step scaffold for a veranda according to any one of claims 2 to 10, wherein one of the inner vertical frame portions is connected to be rotatable around the other. 12. The handrail section on the scaffold main body side and the handrail section on the horizontal member side are connected to each other by a rotating bracket interposed between opposing inner vertical frames of both handrail sections so as to be relatively slidable up and down. The step scaffold for a veranda according to any one of claims 2 to 11, wherein: 13. The handrail part on the scaffold main body side and the handrail part on the horizontal member side are formed such that one handrail part is formed on the other handrail by means of a rotary fitting interposed between the inner vertical frame parts facing each other. The step scaffold for a veranda according to any one of claims 2 to 12, wherein the step scaffold is connected to the handrail so as to be rotatable 360 degrees. 14. A middle vertical frame portion is provided on each of the scaffolding body side handrail portion and the horizontal material side handrail portion, and a locking hook is provided on the middle vertical frame portion of one handrail portion. The hook has its base shaft axially movable and rotatably supported by the middle vertical frame, and is urged by a spring in a direction to draw the hook tip toward the middle vertical frame. The step scaffold for a veranda according to claim 13, wherein when the sliding portions are folded together, the tip of the hook is engaged with the locking hole of the middle vertical frame portion of the other handrail portion. 15. The handrail portion on the scaffold main body side is fixed to the tread plate by a knob bolt screwed from a lower horizontal frame portion to a nut provided on the tread plate side, and the handrail portion on the horizontal member side has a vertical outer side. The step scaffold for a veranda according to any one of claims 2 to 14, wherein the scaffold is fixed to a vertical frame of the framework scaffold by a scaffold clamp attached to the frame portion. 16. A telescopic member for adjusting the length is provided at both ends of each of the upper and lower horizontal rods forming the rooted frame,
Both ends of the upper horizontal rod are fixed to the vertical frame of the framed scaffold by scaffold clamps attached to the elastic member, and both ends of the lower horizontal rod are attached to the elastic member and fitted to the vertical frame of the framed scaffold. The U-shaped frame piece is fixed to the vertical frame by a U-shaped frame piece and a fixing wing bolt attached to an opening end of the U-shaped frame piece. A step scaffold for a veranda according to the above. 17. The step scaffold for a veranda according to claim 10, wherein both ends of the single tube are fixed to a vertical frame of a framework scaffold by a scaffold clamp.