JP2531857Y2 - Framework scaffolding demolition tools - Google Patents

Description

[Detailed description of the invention]

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a tool for disassembling a framework scaffold.

[0002]

2. Description of the Related Art In a frame scaffold (including a rolling tower), a unit such as a streak or a handrail frame is provided with a mounting pin provided at an end thereof in a horizontal direction of a building frame.
(Automatic bracing with spring). On the front side of the mounting pin, a locking piece urged by a spring in the outward direction is provided so as to be able to advance and retreat, and this locking piece is inclined from the front side to the rear side in the protruding state, and the rear side is It is a step.

For this reason, when the mounting hole of the unit is inserted into the mounting pin, the locking piece is pushed back by the mounting hole and retreats, so that there is no problem. When the unit is returned from the mounting position, the unit is locked by the spring, and the unit is automatically prevented from being detached from the unit.

Accordingly, in order to remove the unit in a predetermined mounted state from the mounting pin, the locking piece is retracted against the bias of the spring to reduce or eliminate the step on the rear side. It is necessary to simultaneously perform the operation of moving the hole along the mounting pin. For this reason, conventionally, the attachment piece has been removed by pushing the locking piece with a fingertip to reduce or eliminate the rear step.

[0005]

[Problems to be Solved by the Invention] Therefore, there are the following problems. As the number of times of pushing the locking piece with the fingertip increases, the fingertip gradually becomes tired, the work efficiency is reduced, and the labor burden is large. When repainting the building frame, the coating on the locking piece may be thicker, in which case the force required to push the locking piece against the bias of the spring increases. It is labor intensive. In a distorted portion such as the upper part of the scaffold, it may be difficult to move the mounting hole along the mounting pin itself, and in conjunction with the above-described operation of pushing the locking piece, It takes time to dismantle the scaffold. The purpose of the present invention is to solve such a problem.

[0006]

Means for solving the above problems will be described with reference to the drawings corresponding to the embodiments. The tool for disassembling a scaffold according to the present invention is provided on a frame 1 of a scaffold. An operating piece 8 is rotatably fixed to an operating cylinder 7 having an inner diameter slightly larger than the outer diameter of the protruding mounting pin 2, and a distal end side thereof is formed in a hook-like portion 9. 7 is located at the front side.

[0007]

When the operating cylinder 7 is inserted into the mounting pin 2 from the front side, the operating cylinder 7 retreats the locking piece 3 against the bias of the spring, thereby reducing the step on the rear side. To maintain.
After the operating cylinder 7 is inserted in this manner, the hook-shaped portion 9 at the tip of the operating piece 8 is hooked on the mounting hole 5 of the unit 4 to be removed, and the operating cylinder 7 is moved to the near side in this state. . The mounting hole 5 is drawn by the hook-shaped portion 9 and moves along the two pins for mounting to reach the step portion on the rear side of the locking piece 3, but this step is kept small by the working cylinder 7. Therefore, the mounting hole 5 can be removed from the mounting pin 2 without passing through the mounting hole 5.

[0008]

BRIEF DESCRIPTION OF THE DRAWINGS FIG.
1 to 6 show the configuration and operation of the tool of the present invention. FIGS. 1 to 3 are perspective views, and FIGS. 4 to 6 are side views. In the above figures, reference numeral 1 denotes a building frame of a framed scaffold, 2 denotes a mounting pin projecting from the building frame 1 in a horizontal direction, and the mounting pin 2 has a frontward outward direction. A locking piece 3 biased by a spring (not shown) is provided to be able to advance and retreat. This mounting pin 2 is also referred to as, for example, a spring-loaded automatic bracing. Reference numeral 4 denotes a unit for inserting the mounting hole 5 into the mounting pin 2 and mounting the unit. The unit 4 is a streak or a handrail frame.

Reference numeral 6 denotes a tool according to the present invention. This tool 6 rotatably fixes an operating piece 8 to an operating cylinder 7 having an inner diameter slightly larger than the outer shape of the mounting pin 2. The distal end is configured as a hook-shaped portion 9 and is positioned in front of the operating cylinder 7. Reference numeral 10 is a fulcrum for rotatably supporting the operation piece 8, but these configurations are appropriate. The operating cylinder 7 may be appropriately provided with a grip portion (not shown) for making it easy to grasp by hand.

In the above configuration, when removing the unit 4 mounted on the mounting pins 2 of the building frame 1 through the mounting holes 5, first, as shown in FIG. 1 or FIG. The operation piece 8 is operated to maintain the hook-shaped portion 9 in a lifted state. In this state, the operation cylinder 7 is inserted into the mounting pin 2 from the front side. Therefore, although not shown, the operating piece 8 can be provided with an operation section for facilitating such an operation by a finger. With this insertion, the operating cylinder 7 is engaged with the locking piece 3.
Is retracted against the bias of the spring, the step on the rear side is reduced, and this state is maintained while the operating cylinder 7 is inserted.

After the operating cylinder 7 has been inserted to the predetermined position in this way, as shown in FIG. 2 or 5, the operating piece 8 is set in a free state, and the hook-like portion 9 at the tip is attached to the mounting hole 5 of the unit 4. Hook on the outside. Next, when the operating cylinder 7 is moved to the near side in this state, the mounting hole 5
And moves along the mounting pin 2 to reach the step portion on the rear side of the locking piece 3, but since this step is already kept small by the operating cylinder 7 as described above,
The mounting holes 5 pass through the mounting holes 5 without being caught here, so that the mounting holes 5 can be removed from the mounting pins 2 as shown in FIG. 3 or FIG.

As described above, when the tool of the present invention is used,
The operation of pressing the locking piece 3 to reduce the step and the movement of the mounting hole 5 along the mounting pin 2 can be performed with one touch, and the mounting holes of the plurality of units 4 can be mounted on the same mounting pin 2. When 5 is attached, it is also possible to hook these at the same time with the hook-shaped portion 9 and remove them at the same time.

[0013]

As described above, according to the present invention, the operation of pressing the locking piece of the mounting pin provided on the building frame to reduce the step and the movement of the mounting hole along the mounting pin are performed with one touch. Therefore, the following effects can be obtained. The operation of pushing the locking piece with the fingertip becomes unnecessary, so that the labor load can be reduced and the working efficiency can be remarkably improved. In the repainting of the building frame, even if the coating on the locking piece part is thick and the required force to push the locking piece against the bias of the spring is large, it is easily described above. The unit can be removed. Even in the case where it is difficult to move the mounting hole along the mounting pin in a distorted portion such as the upper part of a scaffold, etc., it is necessary to easily remove the unit as described above. Can be. From the above, the framework scaffold can be quickly dismantled.

[Brief description of the drawings]

FIG. 1 is a perspective view illustrating a configuration and a use state of an embodiment of a tool according to the present invention.

FIG. 2 is a perspective view showing a configuration and a use state of the embodiment of the tool according to the present invention.

FIG. 3 is a perspective view illustrating a configuration and a use state of an embodiment of the tool according to the present invention.

FIG. 4 is a side view showing a configuration and a use state of the embodiment of the tool according to the present invention.

FIG. 5 is a side view showing a configuration and a use state of the embodiment of the tool according to the present invention.

FIG. 6 is a side view showing a configuration and a use state of the embodiment of the tool according to the present invention.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Building frame 2 Mounting pin 3 Locking piece 4 Unit 5 Mounting hole 6 Tool 7 Working cylinder 8 Working piece 9 Hook-shaped part 10 Support point

Claims (1)

(57) [Scope of request for utility model registration] An operating piece is rotatably fixed to an operating cylinder body having an inner diameter slightly larger than an outer shape of a mounting pin protruding from a construction frame of a framed scaffold, and a distal end of the operating piece is hooked. A tool for disassembling a framework scaffold, wherein the tool is configured and positioned on the front side of the working cylinder.