JPH0545141U - Single pipe scaffold lifting equipment - Google Patents

Abstract

(57) [Summary] [Purpose] To provide a lifting tool for a single-pipe scaffold that is used for a single-pipe scaffold and occupies a small space during storage and storage. [Structure] Clamping members 23 and 24 constituting a clamper 21 are rotatably attached to one end of a step member 22, and a single pipe is clamped at the other end side of these clamping members 23 and 24.
The bolt 26 and the nut 27 are used for fixing. [Effect] With a simple structure, it is firmly fixed to a single pipe, and the whole is almost flat bar convenient for storage and storage.
Storage and transportation costs are reduced.

Description

[Detailed description of the device]

[0001]

[Industrial applications]

 The present invention relates to a single-pipe scaffolding lifting tool that is optimal for use in a so-called single-pipe scaffold that is formed by assembling a large number of straight rod-shaped iron pipes in a ladder shape via clampers at an elevator installation site or the like.

[0002]

[Prior Art]

 Conventionally, at a construction site such as an elevator installation site, a large number of straight rod-shaped iron pipes are assembled into a ladder shape by a clamper to form a so-called single pipe scaffold, and workers move along the single pipe scaffold to move the site. I'm working.

FIG. 4 and FIG. 5 are a perspective view and a plan view, respectively, showing a single-pipe scaffold of this kind. In the hoistway 1 of the elevator, four scaffolds are provided along four corners of the scaffold. Vertical single pipes 2 to 5 are set up in a rectangular position with the distance between adjacent single pipes set to a predetermined value, and a plurality of vertical single pipes 2 to 5 with the same height in the vertical direction. In the position, horizontal single pipes 6 to 9 serving as a work table are laterally fixed between adjacent vertical single pipes. The supporting single pipe 10 is projected outward from one end of the horizontal single pipes 6 to 9 at a plurality of selected height positions of the vertical single pipes 2 to 5, and the tip end of the hoistway 1 is provided. Abutment against the wall prevents the single-tube scaffold from rocking.

In order for a worker to be able to move safely on a single pipe scaffold assembled in this way, the horizontal single pipes 2 to 5 are horizontally fixed at the same height position in the vertical direction. It is good to increase the number of sets of pipes 6-9, but if the number of sets of horizontal single pipes 6-9 is increased, an enormous number of horizontal single pipes are required for the scaffold, which is a great deal for assembling and disassembling the single pipe scaffold. It will take time and effort. Therefore, conventionally, the space between the groups of the horizontal single pipes 6 to 9 which are vertically adjacent to each other on the vertical single pipes 2 to 5 is set to be wide to some extent, and a separate lifting / lowering is performed between the groups of the adjacent horizontal single pipes 6 to 9. Equipment is being attached.

FIG. 6 is an explanatory view showing a conventional lifting tool attached to a single-pipe scaffold, and this lifting tool F0 has a plurality of steps alternately arranged on the left and right at a plurality of positions in the axial direction of the support body 15. The member 16 is fixed in a projecting manner, and the connecting bodies 13 and 14 are fixed to the supporting body 15 at right angles to the step member 16 at two upper and lower positions of the supporting body 15. The lifting tool F0 is fixed to the vertical single tube 4.

Here, if the interval between the adjacent step members 16 is set to a predetermined value that can be obtained empirically, the elevating / lowering tool F0 having the above-described configuration is arranged adjacently on the vertical single pipe. By fixing between the horizontal single pipes, the worker can safely move up and down on the single pipe scaffold to perform the elevator installation work.

[0007]

[Problems to be solved by the device]

 The above-described conventional lifting tool F0 has no particular problem in the lifting operation of the worker, but the step member 16 and the connecting members 13 and 14 project in three directions perpendicular to the structural support member 15. However, there is a problem in that a considerably large occupied space is required for storage and storage, and storage costs and transportation costs increase.

The present invention has been made in view of the current state of the above-described lifting equipment of this type, and an object thereof is to use a single pipe scaffolding and to occupy a small space for storage and storage or transportation. It is to provide a lifting tool for a pipe scaffold.

[0009]

[Means for Solving the Problems]

 To achieve the above-mentioned object, the present invention comprises two clamping members, one end side of which is rotatably connected, and a scaffold is formed at the other openable and closable end side of the clamping member. It is configured to have a clamper for holding the pipe, a fixing means for fixing the other end side of the holding member of the clamper while holding the scaffolding, and a step member fixed to one of the holding members. ..

[0010]

With this structure, the clamp member of the clamper is opened at one end side and the other end side is opened, and the single pipe of the scaffold is clamped by the two clamp members, and the single pipe is clamped to the fixing means. The other end of the sandwiching member is fixed, and the lifting tool is fixed to the single-tube scaffold. A worker who works on a single-pipe scaffold puts one foot on a step member fixed to one of the sandwiching members and moves vertically when working on the single-pipe scaffold.

The entire lifting tool has a shape in which a step member protruding on the same plane is fixed to a clamper that is slightly wider in diameter than the single tube and holds the single tube on the outer periphery, which is convenient for storage and storage. It has a small shape.

[0012]

【Example】

 An embodiment of the present invention will be described below with reference to FIGS. Here, FIG. 1 is a plan view showing the structure of the embodiment, FIG. 2 is a side view showing the structure of the embodiment, and FIG. 3 is an explanatory view showing a state in which the embodiment is attached to a single pipe scaffold.

As shown in FIGS. 1 and 2, in the embodiment, the clamper 21 is composed of two holding members 23 and 24, and one end side of these holding members 23 and 24 is rotatably connected by a pin 25. The other ends of the sandwiching members 23, 24 are openable and closable around the pin 25. These holding members 23, 24 are formed by molding a metal plate, the holding member 23 is formed in a substantially L shape, and the holding member 24 is formed in a substantially arc shape. The inner peripheral portion of the holding member 23 is formed in an arc shape so that the inner periphery becomes substantially circular when the ends are brought into contact with each other. A bolt 26 is rotatably attached to the other end of the holding member 23 about a mounting portion 26a, and a mounting hole 24a for inserting the bolt 26 is formed in the other end of the holding member 24. A nut 27 to be screwed into the bolt 26 is provided, and the bolt 26 and the nut 27 form the fixing means of the invention. A step member 22 is formed at a central position on one end side of the sandwiching member 23 so as to project on a surface substantially the same as the surfaces of the sandwiching members 23 and 24 by welding or the like. The step member 22 is formed to have a length long enough for an operator to put his / her foot on it, and a protrusion 29 for preventing the foot from slipping off is provided at the end of the step member 22. A non-slip portion 28 that has been subjected to a stopping process is provided.

In order to attach the lifting tool F having such a configuration to the single-pipe scaffold, the nut 27 is removed from the bolt 26, and the other ends of the holding members 23 and 24 are opened and moved around the pin 25 to hold the holding member. For example, when the vertical single pipe 4 is clamped from the outer peripheral portion by the members 23 and 24, the bolt 26 is inserted into the mounting hole 24a of the clamping member 24, and the nut 27 is screwed into the bolt 26, as shown in FIG. The lifting tool F is firmly fixed to the vertical single tube 4 by the inner peripheral portions of the holding members 23 and 24. In this case, as the nut 27 is screwed in, the bolt 26 rotates around the mounting portion 26a in accordance with the movement of the holding member 24, so that bending stress is applied to the bolt 26 during tightening, and the bolt 26 is damaged. There is no such thing. Similarly, when the nut 27 is unscrewed from the bolt 26 to remove the lifting tool F from the single pipe, no bending stress is applied to the bolt 26.

In this way, the step members 22 adjacent to each other are vertically protruded at predetermined intervals between the vertical single pipes which are vertically adjacent to each other, and the lifting members F 1 are bolted. Tighten and fix to the vertical single pipe with 26 and nut 27. At that time, the operator holds the vertical single pipe 4 by hand and supports the body, and rests his foot on the step member 22 to safely move between the adjacent horizontal single pipes to perform the elevator installation work. It becomes possible to do.

After the elevator installation work is completed, the lifting tool F is removed from the vertical single pipe by removing the nut 27 from the bolt 26, and the other ends of the sandwiching members 23 and 24 are brought into contact with each other to remove the nut 27. When the screw is screwed into the bolt 26, the lifting / lowering tool F is put into a stored state. In this stored state, the sandwiching members 23 and 24 and the step member 22 are disposed on a substantially same plane with a relatively small occupied area, which is extremely convenient for storage and transportation. In this way, the occupied space is greatly reduced compared to the conventional one, so that according to the embodiment, the storage cost and the transportation cost can be significantly reduced.

[0017]

As described in detail above, in the lifting / lowering tool of the present invention, one end side of the two holding members is rotatably attached to one end of the step member, and the other end side of these holding members is a single unit. The tube is clamped and fixed, and it can be easily and firmly attached to a single-tube scaffold, and the overall shape of the bar is almost flat, so the occupied space is small and it is convenient for storage and transportation, greatly reducing storage costs and transportation costs. It is possible to reduce.

[Brief description of drawings]

FIG. 1 is a plan view showing the configuration of an embodiment of the present invention.

FIG. 2 is a side view showing the configuration of an embodiment of the present invention.

FIG. 3 is an explanatory view showing a mounting state on a single-pipe scaffold according to an embodiment of the present invention.

FIG. 4 is a perspective view showing a configuration of a single-pipe scaffold during an elevator installation work.

FIG. 5 is a plan view showing a configuration of a single-pipe scaffold during an elevator installation work.

FIG. 6 is an explanatory view showing a state in which a conventional lifting tool is attached to a single-pipe scaffold during an elevator installation work.

[Explanation of symbols]

 1 Hoistway 2-5 Vertical single pipe 6-9 Horizontal single pipe 10 Supporting single pipe 21 Clamper 22 Step member 23, 24 Clamping member 25 Pin 26 Bolt 27 Nut 28 Non-slip part 29 Projection part

Claims (1)

[Scope of utility model registration request] 1. A clamper comprising two clamping members, one end side of which is rotatably connected, and the other end side of the clamping member which clamps a single pipe constituting a scaffold, and the clamper. 2. A lifting tool for a single-pipe scaffold, comprising: fixing means for fixing the other end side of the sandwiching member while sandwiching the scaffold, and a step member fixed to one of the sandwiching members.