JPH07238688A - Control rod of hanger for safety net - Google Patents

Abstract

PURPOSE:To enhance operability and safety by adjusting the length of a hanger by means of a telescopic pipe and a grip pipe, fitting an engaging pipe around the fitting part of the hanger, inserting the insertion part of the hanger into a hole in a beam, and locking a safety net in place. CONSTITUTION:A safety-net hanger has its length adjusted by loosening of adjusting screws 6 so that the end of the hanger reaches a beam, and the screws are tightened to hold the hanger at a fixed length, and the edge of a safety net is inserted into a ring through the insertion part of the safety-net hanger. Next, the fitting part of the hanger is engaged in the notched part 3a of a control rod 2. Then a grip pipe 5 is gripped to direct the insertion part of the hanger to the target beam, the insertion part is inserted into a hole in the beam, and the grip pipe 5 is pulled down to draw the fitting part out of an engaging pipe 3. To remove the net, the engaging pipe 3 is inserted into the fitting part, raised, and rotated to draw the insertion part out of the hole in the beam. Therefore, installing and removing the safety net requires less time and is easily achieved.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an operating rod of a hanging metal fitting for easily tensioning a safety net for preventing a fall during a house construction work.

[0002]

2. Description of the Related Art Conventionally, during construction work of a house or the like, a safety net is stretched at a mid-height position in order to prevent workers and materials from falling or dropping from high places. In order to stretch this safety net, hooks (hanging metal fittings) are locked at appropriate points, and the worker holds the hanging metal fittings and climbs to a high place using scaffolding, stepladders, and ladders, beams and scaffolding, etc. When the work was completed, the hanging metal fittings were removed, and they were collected.

[0003]

However, there have been many problems in the net tensioning and collecting work in the conventional residential construction work. First of all, every time the net is attached, the worker has to climb to a high place with an unstable stepladder or ladder, which may cause a risk of falling while going up and down or while the net is being stretched. It is always accompanied, and it takes a lot of time and labor to set up and collect the net, and especially in the case of a single work, it is necessary to frequently move the stepladder and the ladder, which puts a great burden on the operator. It was.

[0004]

The problems to be solved by the present invention are as described above, and the means for solving the problems will be described below. That is, an operating rod for engaging and hooking one end of a suspending metal fitting for locking the safety net at a predetermined position, and a notch portion 3 for engaging one end of the hanging metal fitting with the operating rod at the tip.
It is composed of an engaging pipe 3 having a, a telescopic pipe 4 for adjusting the length, and a grip pipe 5 held by an operator who has a bent portion at the lower end.

[0005]

The function of the present invention will be described. The hanging metal fitting 1 is locked at a predetermined position of the safety net, and the length is adjusted between the telescopic pipe 4 of the operation rod 2 and the grip pipe 5 so that the tip reaches the locking position of the building. . Then, while the fitting portion 1a of the hanging metal fitting 1 is fitted into and supported by the cutout portion 3a of the engaging pipe 3, the hanging fitting 1a is carried to the hole provided in the beam of the building material, and the safety net hanging metal fitting 1 is slid a little. When the insertion portion 1b is inserted into the beam hole of the building material, the safety net is locked at a predetermined position, and the operation rod 2 is pulled, the fitting portion 1a of the hanging metal fitting 1 is cut into the engagement pipe 3 by the cutout portion 3a. Get out of. When removing, it is the reverse operation.

[0006]

The problems to be solved and the means for solving the present invention are as described above. Next, the specific structure of the present invention will be described with reference to the accompanying drawings. 1 is an overall front view of the operating rod of the present invention, FIG. 2 is an overall side view of the operating rod, FIG. 3 is an enlarged perspective view of the uppermost portion of the operating rod, and FIG. 4 is an enlarged sectional view of a connecting portion of the operating rod. 5 is an enlarged perspective view of the safety net suspension fitting 1 engaged with the cutout portion of the operating rod, FIG. 6 is a side sectional view showing the safety net suspension fitting 1 inserted into the beam hole, and FIG. 7 is a safety net. It is the figure which showed the state which is doing the work which stretches.

The configuration of the operating rod 2 will be described with reference to FIGS. 1 and 2. The operating rod 2 is composed of an engaging pipe 3, a telescopic pipe 4, and a grip pipe 5 from above, as shown in FIG.
Each of them is composed of a square pipe or a round pipe, and the upper and lower sides of the telescopic pipe 4 are inserted into the engaging pipe 3 and the grip pipe 5, respectively. The telescopic pipe 4 and the engaging pipe 3 are fixed with fixing screws 7 and 7 as shown in FIG. The expansion pipe 4 and the grip pipe 5 are fixed to the length by tightening the adjusting screws 6 at arbitrary positions (lengths). An L-shaped bent portion 5a is formed in the lower portion of the grip pipe 5 so that it can be easily held and can be held so as not to rotate.

As shown in FIG. 3, the engaging pipe 3 is formed with a notch 3a in the longitudinal direction from the upper end so that the safety net hanging fitting 1 can be engaged. As shown in FIGS. 5 and 6, the suspension fitting 1 is formed by twisting a steel rod into an S-shaped ring shape, one end of which is inserted into the engagement pipe 3 to engage with the cutout portion 3a. Part 1a is provided, the other end is a downward insertion part 1b, and a bent part is provided at the upper end of the fitting part 1a at a position above the lower end of the insertion part 1b to provide the contact part 1.
c, the insertion portion 1b can be inserted into the hole 8a of the beam 8 so that the safety net suspension fitting 1 is hard to come off at the contact portion 1c.

Therefore, the engagement pipe 3 is constituted by a rectangular or circular pipe having a hole larger than the outer diameter so that the fitting portion 1a of the safety net hanging fitting 1 can be inserted, and the shape of the notch portion 3a is U. As shown in FIG. 3, the width D of the cutout portion 3a is set to be slightly larger than the diameter of the safety net hanging metal fitting 1, and the depth E thereof is set to be larger than the radius of the safety net hanging metal fitting 1 so as to come off. The safety net suspension fitting 1 is engaged with the operating rod 2 so that it does not slip in the circumferential direction, and it does not run idle even when the operating rod 2 is rotated.

The procedure for attaching the safety net 9 with the operating rod 2 of the present invention having such a structure will be described with reference to FIGS.
First, loosen the adjusting screws 6, 6 so that the tip of the operating rod 2 reaches the beam 8 and adjust the length to tighten and secure the safety net 9 from the insertion portion 1b of the safety net hanging bracket 1. Of the safety net hanging metal fitting 1 is inserted into the notch 3a of the operating rod 2, and the grip pipe 5 is held in this state to hold the safety net hanging metal fitting 1 When the insertion portion 1b of the above is positioned on the target beam 8 and the insertion portion 1b is inserted into the hole 8a of the beam 8, if the grip pipe 5 is pulled downward as it is, the fitting portion 1a will be engaged with the engagement pipe 3a.
The safety net 9 can be suspended by pulling it out. On the contrary, when detaching, the engaging pipe 3 is inserted into the fitting portion 1a and then lifted and rotated, whereby the insertion portion 1b can be pulled out from the hole 8a of the beam 8.

[0011]

Since the present invention is constructed as described above, it has the following effects. In other words, if you set the safety net hanging metal fitting that hooks the edge net of the safety net in the notch at the tip of the operating rod, you can easily attach the safety net hanging metal fitting to the beam hole without the operator climbing on the ladder or scaffolding. On the contrary, it is also possible to remove the net, which makes it possible to shorten the time for attaching and detaching the net as compared with the conventional one, and since the worker does not have to climb to a high place, the net can be safely It is now possible to perform the work of tensioning and removing.

Further, since the operating rod is a combination of pipes, the operating rod can be obtained easily and inexpensively. Since it can be expanded and contracted and set to an arbitrary length, it can be adjusted to the extension of the worker and the height at which the safety net hanging metal fitting is locked, and the structure can be easily used.

[Brief description of drawings]

FIG. 1 is an overall front view of an operating rod of the present invention.

FIG. 2 is likewise an overall side view of the operating rod.

FIG. 3 is an enlarged perspective view of the uppermost part of the operating rod.

FIG. 4 is an enlarged cross-sectional view of a connecting portion of an operating rod.

FIG. 5 is an enlarged perspective view showing a state in which the safety net suspension fitting 1 is engaged with the cutout portion of the operation rod.

FIG. 6 is a side sectional view showing a state in which the safety net suspension fitting 1 is inserted into the beam hole.

FIG. 7 is a diagram showing a state in which a work for stretching a safety net is being performed.

[Explanation of symbols]

 1 Safety net hanging metal fitting 2 Operation rod 3 Engagement pipe 4 Telescopic pipe 5 Grip pipe 9 Net

Claims (1)

[Claims] 1. An operating rod for engaging and hooking one end of a hanging metal fitting for locking a safety net in a predetermined position, the operating rod comprising:
An operator has an engaging pipe 3 having a notch 3a for engaging one end of a suspension fitting at the tip of the operating rod, a telescopic pipe 4 for adjusting the length, and a bent portion at the lower end held by an operator. An operating rod for a hanging fitting for a safety net, characterized by being constituted by a grip pipe 5.