JPH08218582A - Scaffolding for roof - Google Patents

Abstract

PURPOSE: To facilitate operation even when the angle of inclination of a roof changes on its midway and the roof has a curved surface. CONSTITUTION: A scaffolding 1 for a roof has a plurality of ladders 11, 12, 13 arranged in series along the inclined direction of the roof on the roof and ladder connectors 14, 15 connecting the ladders 11, 12 at lower places and the ladders 12, 13 at upper places in a bendable manner. The ladder connectors 14, 15 have an upper connecting plate 31 disposed at the lower end section of the side wood of the ladders 12, 13 at the upper places, a lower connecting plate 32 arranged at the upper end section of the side wood 21 of the ladders 11, 12 at the lower places and a connecting pin 33 coupling both connecting plates 31, 32 so that one can be turned mutually to the other. A pair of left and right expansion leg sections 16 having clamps 67 at lower ends are fitted at the lower end section of the side wood 21 of the ladder 11 at the lowermost place.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a scaffold for roofs used when constructing roofing boards.

[0002]

2. Description of the Related Art A roof scaffold is required when constructing a roof panel, and conventionally, a ladder has been used as a roof scaffold.

[0003]

SUMMARY OF THE INVENTION In the above conventional ladder,
If the roof tilt angle changes in the middle or the roof has a curved surface, there is a problem that the ladder does not follow the roof and it is difficult to work, and it is also difficult to work along the outer wall of the building. The work of fixing to the assembled frame scaffold was troublesome.

An object of the present invention is to provide a scaffolding for a roof that is easy to work even if the inclination angle of the roof changes in the middle or the roof has a curved surface.

Another object of the present invention is to provide a roof scaffold which can be easily fixed to a frame scaffold assembled along the outer wall of a building.

[0006]

A roof scaffold according to the present invention has a plurality of ladders arranged in series on the roof along the direction of inclination thereof, and a lower ladder and an upper ladder connected so as to be bendable. And a ladder connecting device that operates.

[0007] It is preferable that a pair of left and right telescopic legs having clamps at the lower ends are provided at the lower ends of the left and right side trees of the lowest ladder.

A scaffolding plate supporting device is detachably provided on at least one ladder, and the scaffolding plate supporting device comprises:
The scaffolding board placing table arranged substantially horizontally, the short legs provided on the scaffolding board placing table and supported by the upper rungs of the ladder, and the lower leg running on the scaffolding board rest. Preferably, the long legs are supported, and the long legs are extendable.

[0009]

According to the roof scaffold of the present invention, a plurality of ladders arranged in series on the roof along the inclination direction thereof, and a ladder for connecting the lower ladder and the upper ladder in a bendable manner. Since it is equipped with a connecting device, when the roof inclination angle changes in the middle or the roof has a curved surface, one ladder is attached to the other ladder so that it follows the inclination angle and the curved surface. Can be folded.

According to the roof scaffold of the second aspect of the present invention, since the left and right side trees of the lowest ladder are provided with a pair of left and right telescopic legs having clamps at the lower ends thereof, The roof scaffolding is fixed to the frame scaffolding by adjusting the position of the clamp by expanding and contracting the expandable legs according to the distance to the frame scaffolding and tightening the frame scaffolding crossbar with the clamp.

According to the roof scaffold of the invention of claim 3, at least one ladder is provided with a scaffolding plate supporting device detachably, and the scaffolding plate supporting device is a scaffolding plate mounting table arranged substantially horizontally. A long leg provided on the scaffold plate mounting table and supported by the upper cross rail of the ladder, and a long leg portion provided on the scaffold plate mounting table and supported by the lower cross rail of the ladder. Since the legs are expandable and contractible, adjust the length of the long legs so that the scaffolding board mounting table is horizontal, install the scaffolding board support device, and install this scaffolding in multiple rows and scaffold between each row. Bridge the boards.

[0012]

Embodiments of the present invention will be described below with reference to the drawings. In the following description, the left and right shall be referred to from the roof eaves toward the ridge.

FIGS. 1 and 2 show an example in which roof scaffolds according to the present invention are provided in two rows. The roof scaffold (1) is arranged in series on the roof (3) in the direction of its inclination. Lower, middle and upper three ladders located in (11) (12) (13)
A pair of left and right lower ladder connecting devices (14) for connecting the lower ladder (11) and the middle ladder (12) in a bendable manner, and the middle ladder (1
2) A pair of left and right upper ladder coupling devices (15) that foldably connect the upper ladder (13), a pair of left and right telescopic legs (16) provided on the lower ladder (11), and a middle ladder. It consists of a scaffolding plate support device (2) attached to (12).

Each of the ladders (11), (12) and (13) is made of aluminum and has a pair of left and right side trees (21) having an opening inward and having a substantially U-shaped cross section.
(22) (23) and three tubular cross rails (24) (25) (26). A cushion rubber (27) is provided at the upper end of each ladder (11), (12), (13) to prevent the metal part from directly contacting the roof (3).

The left and right lower ladder connecting devices (14) and the left and right upper ladder connecting devices (15) have the same structure, and are shown in FIGS.
Shows the lower ladder coupling device (14) on the right. As shown in the figure, the lower ladder connecting device (14) on the right is the middle ladder.
The upper connecting plate (31) arranged at the lower end of the right side tree (22) of (12) and the lower connecting plate (31) arranged at the upper end of the right side tree (21) of the lower ladder (11). 32) and both connecting plates (31)
A connecting pin (33) for connecting one (32) so that one can rotate with respect to the other, and a rotation blocking plate (34) for restricting the rotation of the connecting plates (31, 32), Pin retaining bracket (4
0) and.

Upper connection plate (31) and lower connection plate
(32) has the same shape and is a substantially rectangular shape, having a width slightly smaller than the width of the bottom wall portions (21a) (22a) of the side trees (21) (22), and the end portion on the side to be overlapped. Is a convex semi-circular end whose width is the diameter (31a)
(32a). Then, the side tree (2
At the upper end of 2), the lower connecting plate (32) is overlaid on the left side of the upper connecting plate (31) so that a circle is formed by the biconvex semicircular ends (31a) (32a), Circular end (31
Pin insertion holes (35) and (36) are formed in the upper and lower connecting plates (31) and (32) so as to pass through the center of the circle formed by a) and (32a).

The rotation prevention plate (34) is substantially rectangular, has the same width as the upper and lower connecting plates (31) (32), and has one end formed in a substantially concave semicircular shape. And, this substantially concave semi-circular end (34
a) is butted against the convex semi-circular end (31a) of the upper connecting plate (31). A substantially concave semicircle is a perfect concave semicircle whose width is the diameter, with the ends cut off slightly, so that a short straight line is formed at both ends of a concave arc that is smaller than the perfect semicircle. The part is formed. The rotation blocking part (37) is where the concave arc part and the short straight part intersect.
As shown by the chain line in FIG. 3, when the side edge of the upper connecting plate (31) hits the rotation preventing portion (37), the upper connecting plate (31) is prevented from rotating. In this example,
The rotation prevention part (37) is a middle ladder (12) with respect to the lower ladder (11).
Is formed so as to be rotatable up and down by 30 °, but the rotatable range can be adjusted to any angle.

The upper connecting plate (31) is fixed to the right side of the bottom wall portion (22a) of the side tree (22) by bolts (38) and nuts (39).

The connecting pin holding metal fitting (40) is in the shape of a rectangular tube, and at the overlapping portion of both connecting plates (31) and (32),
It is fitted over the side tree (21) of the lower ladder (11). The lower connection plate (32) and the rotation prevention plate (34) are connected to the bottom wall portion (21a) of the side tree (21) through the connection pin holding metal fitting (40).
Attached to. That is, the metal fitting for holding the connecting pin
Right wall portion (40a) of (40), bottom wall portion (21a) of side tree (21), spacer (41), rotation preventing plate (34) and lower connecting plate
(32) are piled up in this order from the right side, and are fixed by bolts (42) and nuts (43) at two places. Spacer
The side wall (21) has a protruding edge portion (21b) protruding downward from the bottom wall portion (21a), so that the side wall (21) has a right wall portion (40a) of the connecting pin holding metal fitting (40). This is for filling a gap formed between the side wall (21a) and the bottom wall (21a) of the side tree (21). Bolt (42)
On the left wall portion (40b) of the connecting pin holding metal fitting (40) where the nut (43) is fixed, the bolt (42)
Holes (4) for passing nuts (43) and these tightening tools
4) has been opened.

In the left wall portion (40b) of the connecting pin holding fitting (40), the pin insertion holes (35) (36) of the upper and lower connecting plates (31) (32) are provided.
Has a pin insertion hole (53) that is concentric with, and has a block-shaped connection pin holding hole that has a concentric pin insertion hole (52) on the left surface of the left wall portion (40b) of the connection pin holding metal fitting (40). A section (48) is provided. The connecting pin (33) has a flat head (46),
The shaft portion (45) is inserted from the left side of the connecting pin holding portion (48), and the connecting pin holding portion (48), the left wall portion (40b) of the connecting pin holding metal fitting (40), the lower connecting plate ( 32), the upper connecting plate (31) and the bottom wall (21a) of the side tree (21) of the lower ladder (11). The flat head (46) of the connecting pin (33) is provided with a V-shaped protrusion (47) toward the tip of the shaft (45), and the connecting pin holding portion (48) has this protrusion ( A V-shaped notch (49) is provided in which 47) is fitted. Shaft of connecting pin (33) (4
The coil spring (50) is fitted in (5).
(50) is the left wall part (40b) and the shaft part of the connecting pin holding metal fitting (40)
It is received by the E-ring (51) fixed to (45). The coil spring (50) urges the connecting pin (33) toward the tip of the shaft portion (45).
(33) is held by the connecting pin holding fitting (40). When the connecting pin (33) is pulled to the left side against the biasing force of the coil spring (50), the connecting plates (31) (32) are connected to each other and thus the ladder (11).
The connection between the (12) s is released, and the scaffolding (1) can be easily disassembled / assembled and the number of ladders (11) (12) (13) can be easily increased or decreased.

FIG. 6 shows the right telescopic leg (16). As shown in the figure, the right telescopic leg (16) slides on the pipe (62) arranged in parallel with the side tree (21) and the pipe (62) attached to the side tree (21). A bracket (61) that freely supports, a lower stopper (63) and a lower spring (64) that urges this,
Upper stopper (65) and upper spring (66) that biases it
And a clamp (67) provided at the lower end of the pipe (62).

The bracket (61) is attached to the bottom wall (21) of the side tree (21).
a) The supporting wall (61d) that abuts against the lower wall (61a), the middle wall (61b) and the upper wall that extend to the right from the supporting wall (61d).
It consists of (61c). Pipe guide holes (68) are formed in the lower wall portion (61a), the intermediate wall portion (61b) and the upper wall portion (61c), respectively.

The lower stopper (63) is formed by three plates each having a pipe insertion hole (69),
The bracket (61) is fitted into the pipe (62) between the lower wall portion (61a) and the intermediate wall portion (61b). Lower stopper (63)
The left end of the bracket is in contact with the support wall (61d) of the bracket (61), and the pipe insertion hole (6) of the lower stopper (63) is
The size of 9) is such that it is opened at a position to the right of the left and right center of the lower stopper (63) and the pipe (62) is loosely inserted. The lower spring (64) is fitted in the pipe (62) and is received by the lower stopper (63) and the intermediate wall portion (61b). This allows the lower stopper (63)
Is vertically rotatably supported by the bracket (61) with the left end as a fulcrum, and is biased in a direction to rotate downward. Therefore, the direction of the hole wall of the pipe insertion hole (69) is inclined with respect to the length direction of the pipe (62),
The pipe (62) is engaged with the hole wall of the pipe insertion hole (69) to prevent the pipe (62) from sliding downward.

The upper stopper (65) is formed of three plates each having a pipe insertion hole (70),
The bracket (61) is fitted into the pipe (62) between the upper wall portion (61c) and the intermediate wall portion (61b). Upper Stop (65)
The left end of the bracket is in contact with the support wall (61d) of the bracket (61), and the pipe insertion hole (7
The plate (63) is sized so as to be opened at a position to the right of the left and right center of the plate (63) and the pipe (62) can be loosely inserted. The upper spring (66) is fitted in the pipe (62) and is received by the upper stopper (65) and the intermediate wall portion (61b). As a result, the upper stopper (65)
It is supported by the bracket (61) so as to be vertically rotatable about the left end as a fulcrum, and is biased in a direction of upward rotation. Therefore, the direction of the hole wall of the pipe insertion hole (70) is inclined with respect to the length direction of the pipe (62), and the pipe (62) and the hole wall of the pipe insertion hole (70) are engaged with each other. Pipe (6
The sliding of 2) above is blocked.

Since the lower and upper stoppers (63) and (65) are formed by stacking three plates, they are pipe insertion holes.
Since the hole walls of (69) and (70) are stepwise, the force for preventing the sliding of the pipe (62) is greater than that of a single plate. However, the number is not limited to three, and may be two or four, and the lower stopper 63 and the upper stopper 65 may be different in number.

The clamp (67) is for a single pipe, and by this clamp (67), the uppermost cross-bar (6) of the frame scaffold (5) assembled along the outer wall (4) of the building is tightened. , The roof scaffold (1) is supported by the frame scaffold (5).

When the lower stopper (63) is turned upward by hand against the urging force of the lower spring (64), the lengthwise direction of the pipe (62) and the pipe insertion hole (69) of the lower stopper (63). ), The pipe (62) slides downward and the clamp (6
The overhang of 7) can be increased and the upper stopper (65)
When the hand is rotated downward against the urging force of the upper spring (66), the length direction of the pipe (62) and the direction of the hole wall of the pipe insertion hole (70) of the upper stopper (65) are aligned. In conformity, the pipe (62) can be slid upward to reduce the amount of protrusion of the clamp (67). Depending on the distance from the bottom edge of the side tree (21) to the cross bar (6) of the framework scaffold (5), the pipe (62) is moved to clamp (6
After adjusting the position of 7), release the hand and lower stopper (63)
The upper stopper (65) prevents the pipe (62) from moving. Therefore, the roof scaffold (1) is fixed to the frame scaffold (5) by tightening the cross bar (6) of the frame scaffold (5) with the clamp (67).

7 and 8 show details of the scaffolding plate supporting device (2). The scaffolding board support device (2) is installed on the scaffolding board mounting table (71) arranged substantially horizontally, and on the upper cross rail (25) provided on the scaffolding board mounting table (71) and above the middle ladder (12). The supported short legs (73) and the middle ladder attached to the scaffolding board rest (71)
It has a long leg portion (72) supported by a cross rail (25) below the (12).

The scaffolding board mounting base (71) is formed by a square pipe, and extends from directly above the central portion of the upper horizontal rail (25) to approximately directly above the central portion of the lower horizontal rail (25). It is growing. An inverted U-shaped scaffolding plate fall-out prevention member (75) having screw portions at both ends is inserted into the scaffolding plate placement table (71) from above, and the wing nut (76) is inserted.
It has been stopped by.

The left and right short legs (73) are fixed to the upper end of the scaffolding board mounting base (71) on the side of the horizontal rail (25) and are connected to a square pipe (83) parallel to the horizontal rail (25). , A pair of left and right inverted U-shaped leg end fittings (84) attached to the left and right ends of the square pipe (83) and fitted on the upper horizontal rail (25) from above.

The long legs (72) include an outer cylinder (78), an inner cylinder (77) slidably fitted in the outer cylinder (78), and a core fixed to the outer cylinder (78). The bracket (79) in the shape of a letter, the hook (80) rotatably supported by the bracket (79), and the left and right center of the lower horizontal rail (25) provided at the lower end of the inner cylinder (77). It is composed of an inverted U-shaped leg end fitting (85) fitted to the portion from above. The outer cylinder (78) is provided with a hook insertion hole (81), and the inner cylinder (77).
The hook retaining holes (82) are formed at predetermined intervals, and the hook inserting holes (81) are aligned with the required hook retaining holes (82) to attach the hooks (80). By hooking on the hole edge of the hook hooking hole (82), the long leg portion (72) of a required length can be obtained.

The left and right connecting plates (86) are fixed to the left and right side walls of the outer cylinder (78), and the left and right connecting plates (86) can be freely rotated on the scaffolding plate mounting table (71) by the connecting pins (87). The long leg portion (72) can be folded by being attached to the.

This scaffolding plate supporting device (2) is constructed such that after the inverted U-shaped leg end tool (84) of the short leg portion (73) is fitted to the upper horizontal rail (25), the scaffolding plate mounting base (71) is used. ) Is almost horizontal,
By adjusting the length of (72) and fitting the inverted U-shaped leg end fitting (85) to the lower horizontal rail (25), it is detachably attached to the ladder (11) (12) (13). Has been. And two rows of scaffolding
The scaffolding board (7) is bridged between the scaffolding board supporting devices (2) provided in each (1). Since the scaffolding plate (7) is supported almost horizontally, a horizontal scaffolding is secured over a wide area, and workability is improved.

FIG. 9 shows a case where the roof scaffold (1) according to the present invention is provided on a roof (8) having a concave curved surface. That is, the roof scaffolding (1) allows one of the vertically adjacent ladders to rotate with respect to the other, so that each ladder
Rotate along the curved surface of (8) to prevent the roof from rattling.
(8) Placed on top. Further, since the scaffolding plate supporting device (2) has the long leg portions (72) which can freely expand and contract, the scaffolding plate mounting base (71) can be made substantially horizontal by adjusting this. Even if the roof tilt angle changes midway or the roof has a convex curved surface, each ladder rotates along the roof tilt angle and convex curved surface, and has a special roof shape such as a temple. Also, the roof plate can be easily constructed.

In the above embodiment, the ladder connecting device (14)
Is equipped with an upper connecting plate (31), a lower connecting plate (32), a connecting pin (33), a rotation blocking plate (34) and a connecting pin holding fitting (40), and ladders (11) (12). (13) are connected to each other via the two connecting plates (31) and (32), but the structure for connecting the ladders (11), (12) and (13) is not limited to this, and eventually The connecting portion may be integrally provided with one of the ladders or as a separate member, and the connecting portion may be removably connected to the other ladder by overlapping the connecting portion with the other ladder.

[0036]

According to the scaffold for roof of the invention of claim 1,
If the roof tilt angle changes or the roof has a curved surface, one ladder may be bent with respect to the other so that the scaffold rattles along the tilt angle and curved surface. Is easy to work with.

According to the roof scaffold of the invention of claim 2, the position of the clamp is adjusted by expanding and contracting the telescopic legs according to the distance from the lower end of the side tree to the cross bar of the frame scaffold, and the cross bar of the frame scaffold is clamped. Since the roof scaffolding is fixed to the frame scaffolding by tightening, the roof scaffolding can be easily fixed.

According to the scaffold for roofs of the invention of claim 3, the length of the long legs is adjusted so that the scaffold board mounting base is horizontal, the scaffold board support device is installed, and the scaffolds are provided in a plurality of rows. Since the scaffolding board can be bridged between the rows, it is possible to work on a horizontal scaffolding board and the workability is improved.

[Brief description of drawings]

FIG. 1 is a side view of a roof scaffold according to the present invention.

FIG. 2 is a plan view of the same.

FIG. 3 is an enlarged side view of a main part with a part cut away.

FIG. 4 is a sectional view taken along line IV-IV in FIG.

5 is a sectional view taken along the line VV of FIG.

FIG. 6 is an enlarged side view in which a part of the scaffolding plate supporting device is cut away.

FIG. 7 is an enlarged perspective view of a scaffolding board support device.

FIG. 8 is an enlarged plan view in which a part of a telescopic leg is cut away.

FIG. 9 is a side view of a roof scaffolding curved surface according to the present invention when mounted on a roof.

[Explanation of symbols]

 (1) Roof scaffolding (2) Scaffolding board support device (3) Roof (11) (12) (13) Ladder (14) Lower ladder connecting device (15) Upper ladder connecting device (16) Telescopic legs (24) (25) (26) Ladder rungs (67) Clamps (71) Scaffolding board rests (72) Long legs (73) Short legs

Claims (3)

[Claims] 1. A plurality of ladders (11) (12) (13) arranged in series on a roof (3) along its inclination direction and a lower ladder.
A scaffold for a roof provided with a ladder connecting device (14) (15) for connecting the (11) (12) and the upper ladder (12) (13) in a bendable manner. 2. A pair of left and right telescopic legs provided with a clamp (67) at the lower end of the left and right side trees (21) of the lowest ladder (11).
The scaffolding for roof according to claim 1, wherein (16) is provided. 3. A scaffolding plate support device (2) is detachably provided on at least one ladder (11) (12) (13), and the scaffolding plate support device (2) is arranged substantially horizontally. Scaffolding board rest (71)
And the ladders (11) (12) (13) provided on the scaffold board placement table (71)
The short legs (73) supported by the upper cross rails (24) (25) (26) of
The long legs (72) provided on the scaffolding board placement table (71) and supported by the horizontal rails (24) (25) (26) below the ladders (11) (12) (13) are provided. A scaffold for roofs according to claim 1 or 2, wherein the legs (72) are extendable.