JPH0320437Y2 - - Google Patents

Description

[Detailed Description of the Invention] "Industrial Application Field" The present invention relates to a main net support for assembling and dismantling external scaffolding.

"Prior Art" Assembling and dismantling external scaffolding at construction sites is extremely dangerous, so lifelines are used.

In this case, normally, as shown in Figures 9 to 11, a pair of main rope supports B are attached to the building sites Aa and Aa on the left and right sides of the rear footing at the top of the external scaffolding framework A that is being assembled or dismantled. , B and stand up, a main rope (rope) C is stretched between both supports, and a lifeline is hung on the main rope.

``Problem that the invention aims to solve'' However, when scaffolding is installed outside Framework A, it is difficult to use lifelines.

The main rope supports B and B weigh approximately 15 kg and are clamped to the construction sites Aa and Aa, so two or more workers are required to install and remove them.
The work is tedious and the work efficiency is low.

It is dangerous when attaching or removing the main rope supports B and B because there is no place to hang the lifeline.

Currently, there are many workplaces that do not use it even though they are aware of the dangers.

The present invention attempts to solve such problems.

"Means for Solving the Problems" The present invention provides an appropriate number of hooks 2... at the middle or lower part of the column main body 1 to engage with the arms Ab of the external scaffolding framework A, and at the upper end of the column main body 1. , a guide ring 3 for passing the main rope C is provided, and on the upper part of the support main body 1,
A tension lever 4 that rotates up and down is pivotally mounted, and a master rope linking means is provided at an appropriate position of the tension lever.

``Function'' The main rope supports of the present invention are used by attaching a pair to both sides of the top of the external scaffolding framework A that is being assembled or dismantled. By positioning the lever 4 on the outside, the hooks 2, 2 are engaged with the intermediate portions of the uppermost and next-stage arms Ab, and the levers 4 are supported by the arms.

Next, one main rope C is passed through both guide rings 3, 3, and both ends of the main rope are connected to the respective tension levers 4, 4.
The tension lever is connected to the main rope linking means in the upper position, and the tension lever is rotated downward to tension the main rope C. The tension lever is then fastened to the struts 1,1.

Workers attach a lifeline to the main rope C stretched in this way and carry out assembly or disassembly work.

"Embodiment" FIGS. 1 to 8 show embodiments of the present invention.

In the illustrated example, a support main body 1 made of a steel pipe with a length of a little less than two layers of an external scaffolding framework A is provided, and a reinforcing round steel 5 is inserted into the support main body.

An appropriate number of steel hooks 2 to be engaged with the upper and lower arms Ab, Ab of the external scaffolding framework A are welded to the middle or lower part of the main body 1, and a steel rod is attached to the upper end in a spiral shape. A guide ring 3 which is bent and has a main rope entrance/exit 31 at its upper part is welded.

In addition, a steel tension lever 4 that rotates up and down is pivotally attached to the upper part of the support main body 1 on the same plane as the hooks 2, and the tension lever 4 is attached below the pivot portion 41. A stud bolt 6 is installed corresponding to the tip of the lever 4.

The tension lever 4 has a U-shaped steel handle 42 welded to its tip, and is provided with a cutout 43 that fits into the stud bolt 6, and is fastened with a nut 7 screwed onto the stud bolt. In addition, several steel rings 44, which serve as connecting means for the main rope, are welded to the middle part.

In addition, it is preferable to use a wire rope having a carabiner ring at the tip of the main rope C.

``Effects of the invention'' According to the invention, it can be easily attached and detached by just inserting and pulling out, the work can be carried out satisfactorily by one worker, the workability is flexible, easy to use, and there is little danger. .

In addition, tensioning of the main rope can be done easily and quickly.
Since the main rope is located inside the external scaffold framework A, the lifeline can be used without any problem even when the scaffold is installed outside the framework, and safety can be ensured.

[Brief explanation of the drawing]

1 to 8 show embodiments of the present invention.
2 is a side view of the installed state, 3 is a plan view of the same, 4 is a side view, 5 is an enlarged side view of the main parts, and 6 is an explanatory diagram for use. FIG. 7 is an enlarged perspective view of other important parts, FIG. 8 is an enlarged front view of still other important parts, and FIGS.
Figure 1 is a conventional example, Figure 9 is an explanatory diagram for use, and Figure 1 is
0 is a side view of the attached state, and FIG. 11 is a plan view of the same. 1... Prop body, 2... Hook, 3... Guide ring, 4... Tension lever, 5... Reinforcement round rope, 6...
Stud bolt, 7... Nut, 31... Main rope entrance, 41... Pivot joint, 42... Handle, 43
...Interruption, 44...Kake ring, A...External scaffolding framework, Aa...Building site, Ab...Brace, C...Main rope.

Claims (1)

[Scope of utility model registration request] An appropriate number of hooks 2 are provided in the middle or lower part of the column main body 1 to engage with the arms Ab of the external scaffolding framework A, and a guide ring 3 for passing the main rope C is provided at the upper end of the column main body 1.
, and a tension lever 4 that rotates up and down is pivotally mounted on the upper part of the support main body 1, and a main rope linking means is provided at an appropriate position of the tension lever. rope support.