JP2000034737A - Foot hooking tool for manhole - Google Patents

Abstract

PROBLEM TO BE SOLVED: To easily perform installing work by forming one of the leg part in a coaxial line shape with the foot stepping part, and bending/forming the other leg part in the inverse direction of the grip part formed on the side surface of the foot stepping part. SOLUTION: A hole 11 of a degree capable of inserting the leg part 3 formed in a coaxial line shape with the foot stepping part 2 is bored in a concrete wall 10, and a hole 12 slightly wider by the extent of bending/forming the leg part 4 on the outside is bored in the concrete wall 10. Since the leg part 4 is also reliably housed in the hole 12 by pushing the leg part 4 side foot stepping part 2 forward while inserting the tip of the leg part 3 into the hole 11, installing work of a foot hooking tool in a manhole is completed by blocking up the space part in the holes 11, 12 bored in the state by an adhesive and mortar. Thus, boring of the holes for embedding both leg parts to be fixed to the manhole can be reduced and narrowed as much as possible, and both leg parts can also be simply and easily inserted into the holes, so that installing work of the foot hooking tool in the manhole can be easily performed.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a footrest having a foot portion and legs located on both sides thereof, and more particularly to a manhole footrest which can be easily mounted on a manhole.

[0002]

2. Description of the Related Art Conventionally, a footrest having a foot portion and legs located on both sides of the foot portion has both legs bent outwardly of the foot portion, or both legs have a foot portion. What is formed in the shape of a coaxial line is well known.

[0003]

By the way, if the two leg portions are formed to be bent outwardly of the foot portion, the concrete in the manhole can be reduced when the footrests are installed in a vertical line in the manhole. Holes for embedding the fixing leg portions on the wall surface must be formed widely since both leg portions are bent, which makes the hole drilling operation troublesome.

[0004] Further, in the case where footrests whose fixing legs are formed coaxially with the foot step are installed in a manhole in a line in the vertical direction, holes for embedding the fixing legs are wide. It is not necessary to take it, but since the depth of the hole to be drilled is increased and one leg is inserted, then the other leg is inserted,
While the drilling work is troublesome, the work of inserting both legs is not easy, and furthermore, when the footrest is used in a manhole and is used, it is gradually changed to the footrest due to the overlapping stress change. There is a possibility that kinking deformation may occur, thereby deteriorating the stability of the foot portion.

The present invention has been made in view of the above-mentioned problems of the prior art, and an object of the present invention is to make holes for burying both fixing legs as small as possible. In addition, by simplifying the insertion of both legs into the holes, the manhole can be easily mounted in the manhole, and the manhole can be used safely by preventing deformation due to kinking of the footrest. It is intended to provide a footrest tool for use.

[0006]

In order to achieve the above object, a foothold for manholes according to the present invention comprises a footrest having a grip on one side and legs for fixing to the manhole at both ends. One of the leg portions is formed coaxially with the foot portion, and the other leg portion is bent in a direction opposite to the grip portion formed on the side surface of the foot portion. Things.

[0007]

1 to 5 relate to an embodiment of the present invention. FIG. 1 is a plan view of a footrest, FIG. 2 is a front view, FIG. 3 is a left side view, and FIG. 4 is a right side. FIG. 5 is an explanatory view in which the footrest of the present invention is attached to a manhole.

In FIG. 1, reference numeral 1 denotes the entire footwear. The footwear 1 is composed of a foot part 2 and legs 3 and 4 located on both sides thereof. The legs 3 and 4 are made of an iron core 5 covered with a synthetic resin 6 such as polypropylene.

A non-slip pattern 7 is formed on the surface of the foot portion 2 over substantially the entire area, and reflectors 8 and 8 are provided at both ends thereof. This is a wave-shaped grip formed on the side surface.

Each of the legs 3 and 4 is composed of a synthetic resin 6 coated with a rustproof coating and a core extending from the core and not covered with the synthetic resin. The other leg 4 is formed coaxially with the foot 2 and the other foot 4 is
Is formed to be bent in a direction opposite to the grip portion 9 formed on the side surface of.

When the footwear 1 having the above structure is installed in a row in the vertical direction on the concrete wall 10 in the manhole, as shown in FIG. A hole 11 is formed in the concrete wall 10 such that the leg 3 can be inserted therein, and a hole 12 is formed in the concrete wall 10 so that the other leg 4 is slightly bent outwardly. By pushing the foot 2 on the side of the leg 4 forward while inserting the tip of the leg 3 into the hole 11, the leg 4 is securely received in the hole 12. By closing the spaces in the holes 11 and 12 provided with an adhesive or mortar or the like, the work of attaching the footrests in the manhole is completed.

At this time, since the leg 4 is bent in the opposite direction to the grip 9 formed on the side surface of the foot 2, the footrest 1 is more securely fixed to the concrete wall 10. Further, a large number of footrests 1 are installed in a manhole or the like in the vertical direction. Since it is more resistant to kinking than in the case where it is present, kinking deformation of the footrest 1 can be prevented.

The thickness of the foot portion 2 is changed so that the upper surface of the foot portion 2 is inclined upward at an angle of 1 to 5 degrees from the center toward both ends. It is also possible. In this case, the upper surface of the foot portion 2 is inclined upward at an angle of 1 to 5 degrees from the center toward both ends, so that a large number of footrests 1 are installed in a manhole or the like, and these When ascending and descending using the hanging tool 1, the foot of the elevating person can be easily lifted and lowered in the stable position, and the foot and knee of the elevating person are not particularly tired.

[0014]

According to the foothold for a manhole according to the present invention, a grip portion in which one of the leg portions is formed coaxially with the step portion and the other leg portion is formed on the side surface of the step portion. It is bent in the opposite direction to the above, so the holes for embedding the fixing legs in the manhole can be made as small and narrow as possible, and the insertion of the legs into the holes can be made easily and easily. The manhole footrest can be easily attached to the footrest.

Further, since the tip of one leg is bent outward from the foot step, the footrest can be more securely fixed to the concrete wall, and deformation due to kinking of the footrest can be prevented. It becomes a manhole foothold that can be used safely.

[Brief description of the drawings]

FIG. 1 is a plan view of a manhole footwear according to an embodiment of the present invention.

FIG. 2 is a front view of the same.

FIG. 3 is a left side view thereof.

FIG. 4 is a right side view thereof.

FIG. 5 is an explanatory view in which the footrest of the present invention is attached to a manhole.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Footrest 2 Foot part 3, 4 Leg 9 Grip

Claims (1)

[Claims] 1. A footrest for a manhole having a foot portion having a grip portion on one side surface and legs for fixing to a manhole at both ends thereof, wherein one of the legs is coaxial with the foot portion. A footrest for a manhole, wherein the footrest is formed so that the other leg is bent in a direction opposite to a grip portion formed on a side surface of the foot portion.