KR101795712B1

KR101795712B1 - Sliding manhole cover having a self-standing guide

Info

Publication number: KR101795712B1
Application number: KR1020160039848A
Authority: KR
Inventors: 최익구; 한성용; 김성한; 박희일
Original assignee: 주식회사 세계주철
Priority date: 2016-03-31
Filing date: 2016-03-31
Publication date: 2017-11-08
Also published as: KR20160042841A

Abstract

The present invention relates to a manhole cover having a manhole body 20 on which a manhole cover 10 is seated, a hinge member 20 having one end hinged to the inner circumferential surface of the manhole body 20 and a second end hinged to an inner circumferential surface of the manhole body 20 And a slider 40 hinged to a bottom surface of the manhole cover 10 is formed at one end of the guide 30 and the other end is guided by the guide 30, The manhole cover 10 is horizontally guided to the guide 30 and the guide 30 hinged to the manhole body 20 by the operation of the slider 40 hinged to the manhole cover 10, The manhole cover 10 can be easily opened and closed in the horizontal direction without lifting the manhole cover 10 and the guide 30 can be easily opened and closed when the manhole cover 10 is opened, , The guide (30) acts as a knob And a sliding manhole cover having a self-supporting guide that serves as a safety indicator 35 during operation to ensure the convenience and safety of the operator.

Description

BACKGROUND OF THE INVENTION 1. Field of the Invention [0001] The present invention relates to a sliding manhole cover having a self-

[0001] The present invention relates to a manhole cover, in particular, a manhole cover slidably opened and closed by a guide installed across a central portion of a manhole body, wherein the guide is automatically raised or hung on the manhole body according to opening and closing operations of the manhole cover The guide hole can be easily opened and closed in the horizontal direction without lifting the manhole cover. In addition, since the guide does not interfere with the manhole entrance when the manhole cover is opened, the guide acts as a handle and a safety mark The present invention relates to a sliding manhole cover having a self-supporting guide for ensuring convenience and safety of an operator.

Generally, a manhole body and a manhole cover to be mounted on the manhole body are installed at an entrance of an underground structure such as a drain pipe and a communication line. Since the manhole cover is mostly made of cast iron, it is very heavy and the work manhole needs to lift the manhole cover in order to get in and out of the manhole. In addition, the worker was often injured when opening and closing the manhole cover.

In order to solve the problem of the conventional manhole cover, a sliding manhole cover for opening and closing a manhole cover in a horizontal direction without lifting a manhole cover of a weight has been devised as disclosed in the Utility Model No. 20-2011-0003621, Conventional sliding manhole covers have structural limitations that are applied only to rectangular manhole covers.

That is, in the case of the sliding manhole cover, a linear guide for guiding the manhole cover in the horizontal direction is necessarily required, and the rectangular manhole cover can easily constitute the guide on both facing sides of the manhole body.

On the other hand, in the case of the circular manhole cover, it is difficult to form a linear guide in a circular manhole body. When a separate guide is formed and installed on the manhole body, the operator opens and closes the manhole cover at the time of entering and exiting the manhole, There has been a problem that the guide has to be disassembled or reassembled, so that the conventional sliding manhole cover has a structural limitation mainly applied to a square manhole.

On the other hand, safety accidents caused by manhole work are caused by various reasons besides the case of heavy manhole cover.

In particular, there is no means for a worker having various working tools and parts to reliably prevent the worker from falling down and falling from the ground to the ladder inside the manhole or from the manhole to the ground.

In addition, there is no means for indicating an exit port when the manhole is opened, and even if a separate safety sign is prepared, an accident that falls into the open manhole frequently due to wind collapses or is installed at a distance from the entrance.

Public Utility Model Publication No. 20-2011-0003621 (Published on April 13, 2011)

The present invention has been made to solve the above-mentioned problems, and it is an object of the present invention to provide a manhole cover which can be easily opened and closed by pushing the manhole cover in a horizontal direction without lifting the weight, It is an object of the present invention to construct a sliding manhole cover which does not disturb.

In addition, the present invention provides a means for relieving the worker from losing his / her mind at the time of entering and exiting the manhole, and means for indicating the entrance at the time of opening the manhole is provided to prevent a manhole fall accident without installing a separate safety sign There is another object of the invention.

The sliding manhole cover according to the present invention includes a manhole body 20 on which a manhole cover 10 is seated, a hinged one end on an inner circumferential surface of the manhole body 20, The guide 30 is selectively seated on the inner circumferential surface of the body 20 and the slider 40 is guided by the guide 30 at one end and hinged to the bottom surface of the manhole cover 10 at the other end, When the manhole cover 10 is opened, the manhole cover 10 is horizontally guided to the guide 30 and the slider 40 hinged to the manhole cover 10 is operated, And a sliding manhole cover having a self-supporting guide in which the hinged guide 30 stands up.

The present invention is characterized in that a plurality of rollers 11 and 12 are formed on the bottom surface of the manhole cover 10 and an induction groove 33 for guiding the one roller 12 to the upper surface of the guide 30 And a safety indicator 35 which is integrally or detachably or foldably displayed on the guide 30 and a structure in which the guide 30 is provided on the manhole body 20 when the guide 30 is raised. There is an additional feature in the construction of the " sliding manhole cover having the self-supporting guide ", in which the safety pin 50 for fixing the safety pin 50 is further formed.

According to the present invention, since the manhole cover is slid on the guide bridged across the center of the manhole body, the manhole cover can be easily pushed in the horizontal direction without lifting the heavy manhole cover regardless of the shape of the manhole body There is an effect that can be opened and closed. Further, since the guide is automatically self-supported at the same time as the manhole cover is opened, there is also an effect that the operator does not interfere with the manhole entrance.

Particularly, when the manhole enters and exits, the standing up guide not only serves as a handle of the worker but also serves as a safety mark during work, thereby securing convenience and safety of the worker.

BRIEF DESCRIPTION OF THE DRAWINGS Fig. 1 is a perspective view of a manhole cover according to the present invention,
2 is a cross-sectional view showing a state in which the manhole cover according to the present invention is closed;
3 is a cross-sectional view showing the opening action of the manhole cover according to the present invention
4 is a cross-sectional view showing a state in which the manhole cover according to the present invention is opened;
5 is a view showing a state of use in which a manhole cover according to the present invention is opened;
6 is an enlarged perspective view of the main part of Fig.

Hereinafter, a configuration of a 'sliding manhole cover having a self-supporting guide' according to a preferred embodiment of the present invention will be described in detail with reference to FIG. 1 to FIG.

1, the sliding manhole cover according to the present invention is divided into a manhole cover 10, a manhole body 20, a guide 30 and a slider 40. The manhole cover 10 has a circular shape And is pushed or pulled in the horizontal direction with respect to the manhole body 20 to open and close.

Specifically, a plurality of rollers 11 and 12 are formed on the bottom surface of the manhole cover 10 so as to rotate in the opening and closing directions. A pair of rollers 11 are provided at the tip of the manhole cover 10 in the direction in which the manhole cover 10 is opened And a single roller 12 is formed at a rear end thereof to be seated on the guide 30 when the manhole cover 10 is closed.

The manhole cover 10 can be opened easily as shown in FIGS. 2 and 3 by forming a lead-out groove 16 into which the draw-out lever 60 is inserted at the upper end in the direction in which the manhole cover 10 is opened But it is also possible to form a normal handle (not shown) to open the manhole cover 10.

The manhole body 20 is formed by protruding a hinge fastening part 21 on one side of the inner circumferential surface of the manhole body 20 so that one end of the guide 30 can be hinged And an engaging groove 22 is formed on the inner circumferential surface of the opposite side of the hinge fastening portion 21 so that the other end of the guide 30 can be selectively seated.

Further, the hinge fastening part 21 of the manhole body 20 is further provided with a fastening hole 25 so that a safety pin 50 to be described later can be inserted.

It is also preferable that a ladder installation hole 27 is formed on the inner circumferential surface of the manhole body 20 in the direction in which the hinge fastening portion 21 is formed so that the upper hooks of the ladder 70 can be installed.

The guide 30 is formed with guide grooves 31 on its both sides and is automatically raised or suspended from the manhole body 20 according to the opening and closing operation of the manhole cover 10, And a hooking protrusion 32 is formed at the other end of the guide 30 so as to be engaged with the hooking groove 22 formed in the manhole body 20 So that they can be selectively seated. At this time, the guide 30 maintains the horizontal position as shown in FIG. 2 and FIG. 3 in a state where the latching protrusion 22 is seated in the latching groove 22.

The guiding groove 33 is formed on the upper surface of the guide 30 so that the one roller 12 formed on the manhole cover 10 is guided to the left and right sides of the manhole cover 10 when the manhole cover 10 is closed. So that it can be stably closed.

The safety cover 35 is further formed on the guide 30. When the manhole cover 10 is opened, the guide 30 interlocked with the manhole cover 10 is automatically lifted and the safety cover 35 is lifted. The safety of the manhole operator and the pedestrian can be further secured.

5 and 6, the safety indicator 35 may be integrally formed with the guide 30 or may be formed separately from the guide 30 to form a detachable or unfolded section. The present invention is not limited to the form of the safety mark 35 such as an integral type, a detachable type or a folding type.

The safety sign 35 may be composed of characters as shown in the figure, or may be represented by other shapes or symbols such as a triangle of caution marks.

5 and 6, the guide 30 is formed to have a plurality of through holes 36 so that the weight of the guide 30 is reduced. In addition, the operator can easily guide the guide 30, It is desirable to be able to catch it.

The slider 40 is formed as a pair and has a pair of slots 45 formed at one end of each slider 40 so as to be guided and guided by both side guide grooves 31 of the guide 30, And the other side end is hinged to the bottom surface of the manhole cover 10.

At this time, the slider 40 connects the manhole cover 10 such that the manhole cover 10 is horizontally guided by the guide 30 when the manhole cover 10 is opened and closed, (30) to stand up or to be seated on the manhole body (20).

4 and 6, the safety pin 50 is inserted into the fastening hole 25 formed in the hinge fastening portion 21 of the manhole body 20, The guide 30 can be firmly fixed by the safety pin 50 when the operator stands in the manhole, so that the operator can stably enter and exit the guide 30 while holding the guide 30 in and out of the manhole.

The operation of the manhole cover 10 according to the present invention will now be described with reference to the operation of the manhole cover 10. When the manhole cover 10 is opened and the withdrawing lever 60 is hooked into the drawing groove 16, The guide 30 is guided horizontally while the guide hole 30 is guided by the guide 30 and the guide 30 whose one side is hinged to the manhole body 20 is rotated by the operation of the slider 40 .

The safety pin 50 is inserted into the fastening hole 25 of the hinge fastening part 21 so that the guide 30 is firmly fixed so that the operator grips the guide 30 and the ladder 70 The safety sign 35 formed on the guide 30 can accurately recognize the entrance of the manhole by the worker on the ground and the pedestrian, so that a safety accident such as a manhole fall accident can be prevented.

When the manhole cover 10 is closed, the safety pin 50 is removed from the coupling hole 25 and then the opened manhole cover 10 is pushed toward the manhole body 20, the bottom surface of the manhole cover 10 The manhole cover 10 can be easily closed by the plurality of rollers 11 and 12 formed on the manhole cover 10.

The guide 30 is installed across the center of the manhole body 20. The engaging protrusion 32 formed at the end of the guide 30 engages with the engaging groove 22 formed on the inner circumferential surface of the manhole body 20 So that the guide 30 is kept horizontal.

Therefore, according to the present invention, not only the manhole cover 10 can be easily opened and closed in the horizontal direction without lifting the humanhole cover 10, and the guide 30 can be easily opened and closed when the manhole cover 10 is opened. In addition, the guide 30 functions as a handle and a safety sign 35 during operation of the manhole, so that convenience and safety of the operator can be ensured.

10: Manhole cover 11, 12: Roller
16: draw-out groove 20: manhole body
21: hinge fastening part 22: fastening groove
25: fastening hole 27: ladder mounting hole
30: guide 31: guide groove
32: engaging projection 33: guide groove
35: Safety cover 36: Through hole
40: Slider 45: Slot
50: safety pin 60: withdrawable lever
70: Ladder

Claims

A manhole cover (10) having a plurality of rollers (11) and (12) formed on the bottom surface in the opening and closing direction;
A manhole body 20 on which the manhole cover 10 is seated and on which a hinge coupling part 21 is formed;
A roller 12 provided at a rear end of a roller provided on a bottom surface of the manhole cover 10 is seated and moved so as to be moved across a center portion of the manhole body 20, A guide 30 which is hinged to the upper surface of the manhole cover 20 and is selectively seated on the inner circumferential surface of the manhole body 20 and has a guide groove 31 for guiding horizontal movement of the manhole cover 10;
And the other end of the hanger cover 10 is hinged to the bottom surface of the manhole cover 10 to connect the manhole cover 10 and the guide 30 to each other, A slider 40 guiding the horizontal movement of the guide 30 and engaging with the guide groove 31 to raise the guide 30;
And a safety pin (50) fastened to the manhole body (20) to hold the guide (30) when the guide (30) stands up,
The manhole cover 10 is slid by the rollers 11 and 12 and horizontally moved along the guide 30 by the slider 40 to be opened and closed in a horizontal direction without lifting up. And the slider (40) is engaged with the end of the guide groove (31) while the guide (30) is lifted about the hinge coupling part (21).

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2. The sliding manhole cover according to claim 1, wherein an guide groove (33) for guiding one side roller (12) is formed on an upper side of the guide (30).

2. The sliding manhole cover according to claim 1, wherein the guide (30) is provided with a safety indicator (35) which is integrally or detachably or folded.

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