JP2897979B2 - Blind lid of hanging hole for lining plate - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a blind cover for closing a hanging hole opened for hanging a lining plate.

[0002]

2. Description of the Related Art For example, in subway construction and the like, excavation work and the like are performed in an underground space of a road. Will allow normal vehicle traffic,
Subway construction can be performed in the underground. In such a construction, a foundation pile is usually embedded in the ground, and H
A lining girder made of shaped steel or the like is laid horizontally, and a plurality of lining plates are laid on the lining girder to increase the strength against a load caused by traffic of a vehicle or the like.

In addition, when carrying construction materials and heavy equipment into the underground, it is necessary to remove the lining plate, and it is impossible to lift by manual labor. The lining plate is attached and detached by lifting using heavy equipment such as a wrecker. For this reason, a hole for hanging is formed in the lining plate, and the hanging holes are usually provided at four corners of the lining plate 7 as shown in FIG. If the hanging hole 7a is left open, foreign matter may be caught or dropped, which is dangerous. Usually, a blind lid that can be locked in the hanging hole 7a is used. Is closed. However, since such a conventional blind lid is made of metal, there arises a problem that the metal lining plate and the blind lid also collide with each other due to vibration or the like caused by the traffic of a vehicle and noise is generated. I was

[0004]

As described above, in the conventional blind lid for hanging a lining plate, noise is generated due to the contact between the hanging hole and the blind lid, causing great trouble to the neighborhood. In addition, there is a disadvantage that the work efficiency of the worker working inside the basement cannot be improved. The present invention has been made in order to solve such a conventional problem, and an object of the present invention is to provide a blind lid of a lining plate hanging hole capable of significantly reducing noise. .

[0005]

According to the present invention, there is provided a blind cover for covering a suspension hole formed in a lining plate, the cover comprising a metal having an area slightly larger than the suspension hole . A blind plate, and a plate of the lining plate which is erected substantially at the center of the blind plate.
Shaft formed slightly longer than the thickness and length in the longitudinal direction
Is larger than the diameter of the suspension hole and the length in the short direction
Is smaller than the diameter of the suspension hole.
A flexible locking member attached to the lower end of the shaft, and having a slight thickness, and being detachably attached to the back side of the blind plate.
And a flexible cushioning member that is attached so as to be capable of being mounted .

According to the present invention constructed as described above, the flexible cushioning member such as rubber is interposed at the portion where the blind plate and the lining plate are in contact with each other. This makes it possible to prevent noise when a collision occurs. In addition, if an elastic sealing material is used as the material of the flexible buffer member, the watertightness between the blind plate and the lining plate is secured in rainy weather or the like, and rainwater does not enter the underground. Further, by using a rubber having a thickness of 1.0 to 1.6 mm as the flexible member, the replacement cycle of the consumed rubber can be lengthened, and the traffic due to the step between the blind plate and the lining plate can be reduced. The effect can be prevented.

[0007]

Embodiments of the present invention will be described below with reference to the drawings. FIG. 1 is a perspective view showing an embodiment of a blind lid of a lining plate hanging hole to which the present invention is applied, FIG. 2 is a plan view thereof, and FIG. 3 is a front view thereof. As shown in each figure, this blind lid is a metal blind plate 1 that covers and closes the opening of the hanging hole.
A shaft 2 erected at the center of the back side of the blind plate 1 (side in contact with the lining plate 7); and a rectangular parallelepiped as a flexible locking member attached to the tip of the shaft 2. Locking rubber 3, a washer 5 for fixing the locking rubber 3 to the shaft 2, and a flexible cushioning member attached to the back surface of the blind plate 1 with an adhesive or an adhesive tape. Cushion rubber 6
And a reinforcing plate 4 having a U-shaped cross section for reinforcing the connection between the blind plate 1 and the locking rubber 3.

When the blind lid thus constructed is attached to the hanging hole of the lining plate 7, FIG.
As shown in (1), first, the locking rubber 3 is bent into an inverted U-shape using flexibility, and inserted into the inside of the hanging hole 7a. The locking rubber 3 can be inserted into the suspension hole 7a by the procedures shown in FIGS.
a can be overlaid. At this time, since the buffer rubber 6 is interposed between the lining plate 7 and the blind plate 1, the metal lining plate 7 and the metal blind plate 1 do not directly contact with each other. The noise generated by the collision between the two can be significantly reduced.

Further, since the blind plate 1 has a circular shape whose diameter is larger than that of the hanging hole 7a, even if the position of the blind plate 1 is shifted, it does not fall into the hanging hole 7a. Furthermore, if an elastic sealing material is used as the above-mentioned cushion rubber 6, the watertightness between the lining plate 7 and the cushion rubber 6 is improved, and the intrusion of rainwater into the underground can be prevented. become. Here, as the sealing material, a known sealing material such as urethane rubber-based butyl rubber or rubber asphalt-based can be used.

[0010]

EXAMPLE As an example of the present invention, for example, the diameter of the blind plate 1 was 75 mm, and the diameter of the buffer rubber 6 was 74 mm, which was slightly smaller than the diameter of the blind plate 1. And the thickness of the buffer rubber 6 was set to 1.6 mm. At this time, in particular, the thickness of the cushion rubber 6 is consumed by friction due to long-term use. Therefore, the inventors measured the life while appropriately changing the thickness of the cushion rubber 6, and found that the thickness was 1.0 mm to A result of 1.6 mm was preferred. That is, the thickness is 1.0 mm
If the thickness is less than 1, the result is that the rubber cushion 6 is quickly consumed, and the rubber must be replaced in about one week. The result was that there was an effect. Also,
As the locking rubber 3, a rubber having a length of 30 mm, a width of 150 mm, and a thickness of 8 mm was used.

Further, the vertical length of the locking rubber 3 is set to about 20 mm, and the cushioning rubber is formed with three sides at the center as shown in FIG.
If the shape has a rectangular opening 8a of about 0 mm,
When replacing the cushioning rubber 8 with a new one, the cushioning rubber 8 can be easily attached and detached by inserting the locking rubber 3 into the rectangular opening 8a. In addition, if a cut is made in the cushion rubber, attachment and detachment becomes easier.

[0012]

As described above, according to the present invention,
Since the flexible cushioning member is interposed at a portion where the blind plate and the lining plate are in contact with each other, it is possible to significantly reduce noise caused by the collision between the blind plate and the lining plate. In addition, if the flexible member is made of a material that can be fired when wet, the space between the blind plate and the lining plate can be closed in a water-tight manner, so that rainwater can be prevented from entering the inside. Is obtained.

[Brief description of the drawings]

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

FIG. 2 is a plan view showing the configuration of one embodiment of the present invention.

FIG. 3 is a front view showing the configuration of one embodiment of the present invention.

FIG. 4 is an explanatory view showing an operation of inserting a blind lid into a hanging hole of a lining plate.

FIG. 5 is an explanatory view showing a modification of the configuration of the cushion rubber.

FIG. 6 is an explanatory view showing lining boards arranged on a road.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Blind plate 2 Shaft 3 Locking rubber 4 Reinforcement plate 5 Washer 6,8 Buffer rubber 7 Lining plate 7a Hanging hole

Claims (2)

(57) [Claims] 1. A blind cover for covering a hanging hole formed in a lining plate, comprising: a metal blind plate having an area slightly larger than the hanging hole; Is greater than the thickness of the lining plate
A shaft formed slightly longer , the length in the longitudinal direction is larger than the diameter of the suspension hole, and
The length in the short direction was formed smaller than the diameter of the suspension hole
It has a rectangular parallelepiped shape and is attached to the lower end of the shaft.
A flexible locking member having a slight thickness and detachably attached to the back side of the blind plate.
A blind cover for a lining plate suspension hole, comprising: a flexible buffer member to be attached ; 2. A blind lid for a lining plate hanging hole according to claim 1, wherein said flexible member is made of an elastic sealing material such as rubber or resin.