JP2003003775A - Auxiliary implement for rung - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide an auxiliary implement for rungs, which is simple and convenient to carry, allows safe entrance into/exit from a manhole, and can be easily mounted/demounted. SOLUTION: This auxiliary implement 1 for the rungs 8 and 8', which are installed in the manhole and the like, is composed of the first hook part 3 for the rung 8, which is provided at a lower end, a handle part 4 which is provided at an upper end, and the second hook part 5 for the rung 8', which is engaged for attachment with a frame 2 for connecting the handle part 4 and the hook part 3, so as to move in a direction of ascent/descent.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a trapping aid which can be attached to a trapping provided in a manhole or the like to allow a person to safely enter and leave.

[0002]

2. Description of the Related Art Conventionally, for example, in and out of the sewer,
Usually, this is done by using ramps installed at a predetermined interval on the straight wall in the manhole.

[0003]

The raising and lowering of the above-mentioned trap is not particularly dangerous when the hands and feet are caught on the trap, but it is necessary to pay close attention when entering and leaving the manhole. That is, normally, there is no grip around the manhole opening that can be grabbed by hand, so
When going in and out of the manhole, I have to take an unstable posture. The unstable posture poses a risk of falling and imposes a great psychological burden on the worker.

For this reason, when another operator lends his hand or enters a relatively small manhole, his feet are placed on the ramp and his back is pressed against the wall surface of the ramp in the manhole opposite to the posture. I was descending until I could reach the ramp, but I can not use this method with a large diameter manhole. Therefore, despite the fact that there is a ramp in the manhole, it is often the case that the ladder is lowered and used in the manhole.

SUMMARY OF THE INVENTION Therefore, an object of the present invention is to provide a convenient and portable trump assisting tool that allows a person to safely enter and leave a manhole.

[0006]

SUMMARY OF THE INVENTION An auxiliary tool for a ramp according to the present invention comprises a first hook portion of the flap provided at a lower end portion,
It is composed of a grip portion provided on the upper end portion, and a second hook portion which is engaged with a frame connecting the grip portion and the first hook portion and moves in the up-and-down direction. It is preferable to attach a cord body connecting the second hooking portion and the grips to the trap aid of the present invention.

[0007]

DETAILED DESCRIPTION OF THE INVENTION An embodiment of the present invention will be described below with reference to the accompanying drawings. FIG. 1 is a perspective view showing an example of the trap assistance tool of the present invention, and FIG. 2 is a schematic partial schematic perspective view showing a usage state of the trap assistance tool of FIG. FIG. 3 is a perspective view showing another example of the trap aid of the present invention.

As shown in FIG. 1, a trapping aid 1 according to the present invention comprises two rod-shaped frames 2, which are arranged in parallel at a distance.
The first hooking parts 3 and 3 of the ramp provided integrally with the lower end of 2, the handle part 4 provided at the upper end, and the bar-shaped frames 2 and 2 are attached to the upper and lower parts. It is composed of the second hook portions 5 and 5 of the moving trap.

A first hooking portion 3, which is hooked on the trap.
3 is formed in a U-shaped cross section with the openings 6 and 6 facing downward. It is attached by hooking it from the inside. Although the first hooking portions 3 and 3 have a U-shaped cross section, the present invention is not limited to this, and the trapping aid 1 of the present invention can be easily hooked onto the trapping 8 from above. As long as it can be mounted, any shape such as a circular cross section having an open portion at the bottom and a U-shaped cross section may be adopted.

The grip portion 4 is a trapping aid 1 of the present invention.
It is necessary for attaching and detaching the
It serves as a support for the hand when entering and exiting the manhole, and is further required for carrying the trap aid 1 itself. Therefore, it is preferable that the shape is such that it is hard to slip and easy to grip.

As shown in FIG. 1, the bases 9, 9 of the second hook portions 5, 5 are formed in a cylindrical shape, and are slidably attached to the rod-shaped frames 2, 2 so as to move up and down. You can move around freely. As shown in FIG. 2, the second hook portions 5 and 5 have the first hook portions 3 and 3 as a fulcrum, and the trap hook auxiliary tool 1 in which the first hook portions 3 and 3 are attached to the trap 8 is used as a fulcrum. The second hook portions 5, 5 are provided so as not to come off from the side wall surface of the trap in the manhole, and the second hook portions 5, 5 are arranged above the trap 8 to which the first hook portions 3, 3 are attached. By attaching to the 8 ', the trap aid 1 is attached parallel to the wall surface on the side of the trap, and the trap aid 1 does not come off from the trap. The trap aid of the present invention is preferably made of a light metal such as aluminum or duralumin, which is lightweight and has excellent strength, but is not particularly limited thereto.

Further, since the second hook portions 5 and 5 move up and down in the manhole, the traps 8 and 8 '
Regardless of the distance between them, it can be freely attached to the ramp 8'according to the size of the site. A frame 10 connecting the bases 9 and 9 is formed between the second hooks 5 and 5 so that the second hooks 5 and 5 can be simultaneously attached to and removed from the trap 8 '. Has become. The second hook portions 5 and 5 are, in the figure, the first hook portions 3 and 3.
Similarly, the open portions 16 and 16 have a downward U-shaped cross-section, but any shape can be adopted as long as it can be easily hooked and attached to the trap 8'from above. You may.

FIG. 3 shows another example of the trap aid of the present invention. The basic structure is the same as that of the trap shown in FIG. Hand 1
A string 11 is attached between the four. That is, the cord bodies 11, 11 attached to the second hook portions 15, 15 are
It passes through the inside of the ring member 12 integrally attached to the curved portions at both ends of the handle portion 14, and further through the inside of the ring-shaped mooring portion 13 provided in the central portion of the handle portion 14 to the outside. It extends and is finally attached to the pulling member 17. With such a configuration, the pulling member 17
By pulling and returning the second hook portion 15,1
5 can be freely moved up and down, so that the second hook 1
It is possible to easily attach and detach 5,15 to the trap. The string may be made of any material,
It is preferable that it has excellent slipperiness and is hard to cut, and for example, a fine metal wire or a chain-like material may be used.

Next, the case of using the trap aid of the present invention in a manhole will be described with reference to FIG.
First, by grasping the grip portion 4 of the trump assisting tool of the present invention, the auxiliary tool 1 is unloaded from the opening 7 of the manhole, and the first hooking portion 3, which is provided at the lower end, The open portions 6 and 6 of 3 are hooked and attached so as to be inserted into the trap 8 in the manhole. Then, the second hook 5,
5 in the up-and-down direction (in the case of the trap aid shown in FIG. 3, the pulling member 17 is used to move the string 11 up and down) to align with the trap 8'above the trap 8, and the second pull Attach the opening 16 of the hanging parts 5, 5 to the ramp 8 '.
The trapping assisting tool of the present invention is completed by hooking and mounting the trapping auxiliary tool.

2, the first hook portions 3, 3 easily attach the trapping aid 1 to the trap 8 and support the entire weight of the assisting device 1. As shown in FIG. The grip portion 4 serves as a necessary grip portion for attachment to, removal from, or pulling up from a trap, and also serves as a grip portion for a hand to support the body when an operator enters or leaves the manhole,
Further, it serves as a grip portion required for carrying the trap assist tool 1. The second hooking portions 5 and 5 of the traps prevent the trap aids 1 attached to the traps from being inclined and separated from the side wall surfaces of the traps, and are attached to the frames 2 and 2 to move in the vertical direction. And it can be easily attached to the ramp in the most suitable place.

In the above description, the case in which the auxiliary tool for the trap of the present invention is applied to the manhole has been described in detail. However, the present invention is not limited to this, and it may be a place where the trap is installed on a straight wall. Of course, it can be applied to any place.

[0017]

According to the trump assisting tool of the present invention, it is possible to ensure the safety against the fall of the worker and to eliminate the psychological anxiety of the worker to the fall accident, so that the work efficiency can be improved. .

[Brief description of drawings]

FIG. 1 is a perspective view showing an example of a ramp assistance tool of the present invention.

FIG. 2 is a schematic partial schematic perspective view showing a usage state of the trap aid shown in FIG.

FIG. 3 is a perspective view showing another example of the trap aid of the present invention.

[Explanation of symbols]

1 Talap aid 2 bar frame 3 First hook 4 Handle part 5 Second hook 6 Opening part of the first hook 7 Manhole openings 8,8 'tarp 9 Base of the second hook 10 frames 11 string 12 Ring member 13 Ring mooring 14 Handle part 15 Second hook 16 Opening part of the second hook 17 Lifting member

Claims (2)

[Claims] 1. An auxiliary tool for a ramp provided in a manhole or the like, comprising a first hooking portion provided at a lower end portion thereof, a handle portion provided at an upper end portion thereof, and the handle portion. And a second hooking portion that moves in the up-and-down direction and is attached to a frame that connects the first hooking portion with the first hooking portion. 2. The trapping aid according to claim 1, further comprising a cord body attached between the second hooking portion and the handle.