JPH0712907B2 - Lifting device - Google Patents

Description

TECHNICAL FIELD The present invention relates to a hoisting device applied when hoisting a heavy object such as a building beam or a beam formwork.

[Prior Art] In the conventional lifting device of this type, the hoisting device is hoisted by two cords whose base ends are respectively fastened to winch winding cylinders and front ends are respectively fastened to front and rear ends of a hoisting stand. The platform was lifted and the beams on the platform were suspended.

[Problems to be Solved by the Invention] In the above-mentioned hoisting device, a difference in elongation amount occurs between the two cords, and the winding lengths when the two cords are wound on the winch winding cylinder become unequal. In addition, there is a problem in that the winding forms are not uniform and the hoisting base moves up and down in a posture inclining forward or backward.

The present invention aims to solve the above problems.

[Means for Solving the Problems] In the hoisting device of the present invention, a column having a lower column body and an upper column body is erected in the front-rear direction on a front end portion of a base to which a winch body of a winch is attached. A part of the rope of the winch was hung from below in the vicinity of the base end and the tip of the suspension arm that was erected so as to be able to fall and was connected to the upper end of the column in an orthogonal manner. A pair of pulleys are attached, and the distal end of the rope is detachably connected to the lower side of the suspension arm, and can be moved up and down by a portion of the rope suspended from the vicinity of the distal end of the suspension arm. An elevating member that is suspended from the elevating member is installed horizontally, and a lifting platform on which heavy objects are placed is supported on both ends of the elevating member in a cantilevered manner via a pair of suspension lines. When pulling up the pillars that lie sideways on the upper end of the arm that is erected on the front end of the base And a guide roller on which a part of the rope is hooked, and a locking pin for locking the tip of the rope when the pillar is raised on the base. Have.

(Operation) In the hoisting device having the above-described configuration, a winch is placed in a state in which a heavy object is placed on the hoisting platform and the hoisting platform is suspended by the both suspension supporting members to the elevating member via a pair of suspension lines. When the rope is driven and wound up by the winch body, the elevating member is pulled up, and the hoisting platform is hoisted along with the support along with the heavy object.

Also, with the support column lying down, part of the rope is hooked on the guide roller at the upper end of the arm to lock the tip of the rope to the lock pin, and the winch is driven to move the rope by the winch body. When wound up, the upper ends of the columns are brought closer to the guide roller side 31 and the columns are raised.

(Effects of the Invention) Since the present invention is configured as described above, the elevating member can be moved up and down by one rope, so that the mechanism and the entire device for guiding the rope are simplified, and the lifting member It is possible to shorten the length of the rope required for lifting and lowering and to stably lift heavy objects.

Also, when pulling up the prop that has fallen sideways, part of the rope is hung on the guide roller to lock the tip of the rope to the locking pin,
When the winch is driven, the support pillar can be easily raised, so that the work of raising the support pillar can be simplified.

[Embodiment] Next, an embodiment of the present invention will be described with reference to the drawings.

In a hoisting device T applied when hoisting a building material such as a beam or a beam formwork during construction of a building, a base 1 of the hoisting device T is a square pipe shape installed horizontally along the front-rear direction. A main rod 1a, and a square pipe-shaped front rod 1b mounted orthogonally on the front end of the main rod 1a and having a central portion fixed to the main rod 1a,
It is equipped with a rectangular frame-shaped rear frame 1c mounted on the rear end of the main rod 1a and fixed to the main rod 1a, and wheels are provided at the left and right ends of the front rod 1b and the left and right ends of the rear frame 1c, respectively. 2 is attached.

A winch body 4 of a winch 3 having a rope 5 is installed on a rear frame 1c of the base 1, and the vicinity of the base end of the rope 5 is wound around a winding cylinder 4a of the winch body 4.

The support rods 6a of the outriggers 6 provided for lowering and raising the front rod 1b to bring the front wheel 2 into contact with and away from the ground are slidably inserted near the left and right ends of the front rod 1b of the base 1. A lifting screw 6b that is rotated by a handle 6c is vertically fitted to the outer ends of both support rods 6a, and a grounding plate 6d that contacts and separates from the ground is attached to the lower end of the lifting screw 6b. ing.

A lower support member 7 having a cross-sectional shape is orthogonally attached to the upper surface of the rear portion of the main rod 1a of the base 1, and the lower support member 7 has a front shape and left and right lower end portions are left and right of the lower support member 7. An upper support member 8 fastened to each end is straddled so as to be capable of tilt adjustment in the front-rear direction, and a pair of front and rear first support members 8 each having an L-shaped cross-section are formed at the center of the upper surface of the upper support member 8. The brackets 9 are attached so as to face each other.

A pair of left and right second brackets 10 having an L-shaped cross section are attached to the front upper surface of the main rod 1a of the base 1 so as to face each other.
At the rear part between the two second brackets 10, the rope 5 that is pulled out from the winding drum 4a of the winch body 4 and inserted into the upper support member 8 is guided upward, or from the upper side the winch body 4
A lower pulley 11 for guiding to the side is rotatably supported by both second brackets 10 via a support shaft 11a that is horizontally inserted.

A pair of left and right third bracket pairs 12 each having an L-shaped cross section are attached to the upper surfaces of the left and right end portions of the front rod 1b of the base 1, and the left and right second brackets 12 are attached to the upper surface of the front rod 1a. Three
Inside the bracket pair 12, a pair of left and right fourth bracket pairs 13 each having an L-shaped cross-sectional shape are attached.

A pair of left and right fifth brackets 45 is provided at the front end of the main rod 1a of the base 1.
A locking pin 45a for temporarily locking the tip end 5a of the cord 5 is horizontally inserted into the fifth brackets 45 so as to be detachable.

The pillar 14 connected to the tip of the base 1 so as to be tiltable in the front-rear direction and erected on the tip of the base 1 is a triangular frame-shaped lower pillar body 15 and a straight rod-shaped upper pillar body 16. And are connected to each other.

The lower column 15 includes a pair of left and right side rods 15a connected in an inverted V shape, and a pair of left and right side rods 15a connected to the left and right third bracket pairs 12 by pins 46 are provided at the lower ends of the both side rods 15a. Mounting piece
15b are fixed. A pair of lower connecting rods 15c, both ends of which are fastened to the two side rods 15a, are installed near the center of the two side rods 15a so as to cross each other in an X shape, and both ends are provided above the two side rods 15a. Part is rod 15a on both sides
The upper connecting rod 15d fixed to the above is horizontally installed, and the trapezoidal plate-shaped mounting plate 15e whose left and right edges are fastened to the both-side rods 15a is attached near the upper ends of the both-side rods 15a. . Left and right 1 respectively fixed to the upper end surface of the rods 15a on both sides
The pair of mounting pieces 15f are respectively fastened to the left and right parts of a horizontal rectangular plate-like connecting plate 15g, and the upper ends of the two-sided rods 15a are connected by the connecting plate 15g.

A connecting member 17 having a substantially V-shaped planar shape and protruding rearward is attached to the central portion of the rear side surface of the mounting plate 15e of the lower pillar body 15, and the central portion of the rear side surface of the mounting plate 15e is attached to the central portion of the rear side surface. L
A pair of left and right sixth brackets 18 having a cross-sectional shape and installed in the connecting member 17 are attached.

Between the upper end portion of the lower pillar 15 and the rear end portion of the base 1, an upper attachment portion 21a of the upper end is connected to both sixth brackets 18 by a pin 19, and a lower attachment portion 21b of the lower end is provided. A support rod 21 connected to the first bracket 9 by a pin 20 and formed to be extendable and retractable is tilted to support the lower column body 15.

The upper pillar 16 has a lower end 16b connected to the lower end of the central portion of the base plate 15e of the lower pillar 15, and the lower end 16b has an upper connecting rod 15d.
And the lower end 16b is connected to the central part of the
The height is adjusted in three steps such that it is connected to the central portion of 5c, and it is assembled to the upper part of the lower pillar body 16, and the upper end surface of the upper pillar body 16 has connecting plates 16a extending to both sides thereof. It is attached horizontally.

A pillar that is laid sideways forward near the center of the front rod 1b of the base 1.
An arm 23 used when raising 14 upright is erected, and this arm 23 is provided with a pair of left and right side rods 23a connected to each other in an inverted V shape. Mounting pieces connected to the fourth bracket pair 13 with pins 24, respectively
23b are fixed to each other, and at the lower part of both side rods 23a, connecting rods 23c, both ends of which are fixed to both side rods 23a, are horizontally installed, and left and right edges are formed on the upper rear side of both side rods 23a. A trapezoidal plate-shaped mounting plate 23d, which is fastened to both side rods 23a, is vertically mounted, and a pair of left and right seventh brackets 25 each having an L-shaped cross-section are attached to the rear side of the mounting plate 23d. It is attached in a direction. Two-sided rod 23
A roller receiver 23e is installed on top of the a.
A guide roller 26 is rotatably fitted on a support shaft 26a which is horizontally inserted through the roller receiver 23e.

Between the upper end of the arm 23 and the front part of the base 1, the upper end is connected to both the seventh brackets 25 by the pins 27, and the lower end mounting portion 29.
A support rod 29, which is connected to the front portions of both second brackets 10 with pins 28, is tilted to support the arm 23.

A suspension arm 30 installed horizontally on the upper column 16 along the front-rear direction is connected to the upper end of the upper column 16 in an orthogonal manner.
In the vicinity of the central portion of the lower surface of the upper pillar body 16, horizontally connected connection plates 30a are fastened to the connection plates 16a of the upper pillar body 16 and left and right parts are laterally extended to both sides of the suspension arm 30, respectively.

Inside the connecting member 17, a bolt 34, which is formed so as to be expandable and contractible slightly rearward of the central portion of the hanging arm 30 and is connected to the hanging arm 30 with a pin 32 and is fixed to the lower end, is formed between the hanging member 30 and the connecting member 17. The reinforcing rod (34) having the nut (48) fastened to the connecting member (17) is inserted into the tip of the reinforcing rod (34).

At the front and rear ends of the suspension arm 30, a pair of front and rear upper sheaves 35 are provided at the front and the rear of the upper end of the column 14, respectively, so that a part of the rope 5 can be folded back from below. 35 are rotatably supported by supporting shafts 35a which are horizontally inserted through the suspension arms 30.

Below the suspension arm 30, a loop-shaped tip portion 5a of the rope 5 is connected, and the tip end portion of the suspension arm 30 is horizontally supported by the rope 5 so as to be vertically movable. Elevating members 36 are installed in parallel, and an eighth bracket 37 having an L-shaped cross-sectional shape is attached to the center of the upper surface of the elevating members 36 so as to face each other.
A locking pin 38 horizontally and removably inserted into both of the eighth brackets 37 is inserted into the loop of the tip 5a of the cord 5.

A pair of front and rear hook-shaped suspension members 40, 40 are respectively suspended at the lower ends of the front and rear ends of the elevating member 36 via support pins 41 that are horizontally inserted through the suspension arms 30. A hook-shaped hooking portion 40a is provided on each of the suspension support members 40, a ring-shaped support portion 40b that is continuously provided above the hooking portion 40a and a support pin 41 is inserted therethrough, and a tip end portion of the cord 5. In order to prevent 5a from coming off, there are provided retaining pieces 40c that are pinned near the base end of the hooking portion 40a.

Below the elevating member 36, a rectangular frame-shaped hoisting base 41, which is supported by both suspension supporting members 40 in a cantilever manner and moves up and down together with the elevating member 36, is installed horizontally for placing the heavy load H. Left and right portions of the front frame rod 41a and the rear frame rod 41b of the hoisting base 41 are arranged symmetrically with respect to the longitudinal center portion of the front and rear frame rods 41a and arranged at equal intervals in the longitudinal direction. Further, a plurality of mounting holes 42A to 42A and 42B to 42B are vertically provided.

Each pair of left and right hooking members 44, in which a pair of front and rear endless hanging ropes 43 hooked on both suspension support members 40 respectively, are respectively inserted, the two hanging ropes 43 are always held in an isosceles triangle shape. As described above, the nuts 4 are selectively engaged with the left and right mounting holes 42A in the front row and the left and right mounting holes 42B in the rear row, respectively.
Each of the locking members 44 is fastened at 7, and a vertical base portion 44a that is inserted through the mounting holes 42A and 42B, and a ring-shaped locking portion 44b through which the hanging rope 43 is inserted are formed. Has been done.

The two suspension ropes 43 are each an isosceles triangle in the suspension support member 40 and the left and right hooking members 44, and the inclination angle of both hypotenuses of the isosceles triangle increases as the height of the heavy object H increases. Are suspended so that the position of the apex is high
It is supported by the lifting member 36 in a cantilever manner.

Further, when the column 14 lying sideways in front of the base 1 is to be erected, as shown in FIG.
The rope 5 is hooked on the guide roller 26 and both upper pulleys 35, and the base end of the support rod 21 is placed on the guide roller 26. When it is wound around the winding drum 4a of No. 4, the pillar 14 and the supporting rod 21 can be raised.

Next, the operation and effect of the embodiment having the above-mentioned configuration will be described.

In this example, a lower column 15 having a lower end coupled to the base 1 on the front end of a base 1 to which a winch body 4 of a winch 3 is attached, and an upper part of the lower column 15 are connected. The pillar 14 having the upper pillar body 16 is erected so as to be able to move up and down in the front-rear direction,
A pair of upper pulleys 35 in which a part of the rope 5 of the winch 3 is hooked up from below in the vicinity of the base end and the tip of the suspension arm 30 which is orthogonally connected to the upper end of the column 14. Is supported by
The tip 5a of the rope 5 is detachably connected to the lower side of the hanging arm 30 and the lifting and lowering is suspended by the portion of the rope 5 hanging from the vicinity of the tip of the hanging arm 30 so that it can be moved up and down. The members are installed horizontally, and at both ends of the elevating and lowering member 36, a lifting base 41 on which a heavy object is placed is supported in a cantilever manner via a pair of hanging ropes 43, respectively. A guide roller 26 is provided on the upper end of the arm 23 that is joined to and erected on the front end of the base 1, and on which a part of the rope 5 is hooked when the upright support 14 is raised. A locking pin 45a for locking the tip 5a of the rope 5 when the support 14 is raised is installed on the table 1.

Therefore, since the elevating member 36 can be moved up and down by a single rope, the mechanism and the entire device for guiding the rope 15 can be simplified, and the rope 5 required for raising and lowering the elevating member 36 can be simplified.
The length can be shortened and a heavy object can be stably lifted.

Further, when the column 14 that has fallen sideways is raised, a part of the cord 5 is hooked on a guide roller to connect the tip 5a of the cord 5 to the locking pin 45.
When the winch 3 is driven by being locked to a, the support 14 can be easily raised, so that the work of raising the support can be simplified.

[Brief description of drawings]

The drawings show one embodiment of the present invention. FIG. 1 is a side view of a hoisting device, FIG. 2 is an enlarged view taken along the line X1-X1 of FIG.
FIG. 3 is an enlarged view of the X2-X2 line in FIG. 2, FIG. 4 is an enlarged view of the X3-X3 line in FIG. 1, and FIG. 5 is an enlarged view of the X4-X4 line in FIG. FIG. 6 is an enlarged arrow view taken along line X5-X5 of FIG. 2, FIG. 7 is an enlarged sectional view taken along line X6-X6 of FIG. 1, FIG. 8 is a side sectional view of a main part, and FIG. FIG. 10 is a front view of the member and the hoist, and FIG. 10 is a side view for explaining the raising operation of the support column. 1 ... Base 4 ... Winch body 5 ... Rope 14 ... Strut 30 ... Suspension arm 35 ... Upper pulley 36 ... Lifting member 40 ... Suspension support member 41 ... Lifting platform

Claims (1)

[Claims] 1. A column having a lower column and an upper column is erected on a front end portion of a base to which a winch body of a winch is attached so that the column can be tilted forward and backward. In the vicinity of the base end portion and the tip end portion of the suspension arm that is orthogonally connected to the upper end, a pair of pulleys on which a part of the rope of the winch is hooked in a folded shape from below are pivotally supported, and A lower end of the rope is detachably locked to the lower part of the arm, and an elevating member hung up and down by a part of the rope hanging from the vicinity of the end of the suspension arm is horizontally supported. In a vertical direction, and a lifting platform on which a heavy object is placed is connected to both ends of the lifting member by means of a pair of hanging ropes, and two suspension supporting members are supported to support each other. On the upper end of the arm erected on the section, a guide rod on which a part of the rope is hooked when the sideways column is raised. With installing, lifting is on the base, characterized in that it has established a locking pin tip is anchored in the rope when to cause said strut device.