KR20160111656A

KR20160111656A - Tunnel for pipeline safety ladder

Info

Publication number: KR20160111656A
Application number: KR1020150036547A
Authority: KR
Inventors: 배병근
Original assignee: 배병근
Priority date: 2015-03-17
Filing date: 2015-03-17
Publication date: 2016-09-27

Abstract

The present invention relates to a safety ladder, and more particularly, to a safety ladder for a tunnel pipe which is disposed in a tunnel pipe formed vertically in the ground to form a multistage stairway to form a vertical movement path of an operator.

Description

{Tunnel for pipeline safety ladder}

The present invention relates to a safety ladder for a tunnel pipe, and more particularly, to a safety ladder for a tunnel pipe, which is disposed in a tunnel pipe formed vertically on the ground to form a multistage stairway to form a vertical movement path of an operator.

Generally, underground structures include an underground channel, a water / sewage facility, a purification tank, a large tank, a manhole, and the like.

The ladder used to inspect such underground structures is fixed to the underground wall to open the lid of the underground structure and to go underground when inspecting or repairing the underground structure.

Underground structures using such ladders are used as ventilation facilities due to the presence of harmful gas inside or the inside of the building due to the enclosed spaces. However, in many places where there is no ventilation facility, Accidents frequently occurred.

However, the ventilation system of the underground structure, which has the most inverted U-shaped pipe shape, must have a separate space for the ventilation installation, which increases the construction period and cost, hinders the beauty of the city, There is a risk of safety accidents due to the leakage of rainwater into the interior of the ventilation pipe.

Especially, in the case of closed underground structures, harmful gas is generated due to gas inflow or corruption of influent water, and safety accidents such as choking during work are frequently occurred. However, in spite of this risk, There are no underground structures with ventilation holes due to installation constraints that make ventilation piping difficult to install on the road or in India.

In addition, it is difficult to get out of the ladder while the worker's underground structure is working, even if the operator perceives the risk of suffocation. If the external worker senses the risk of suffocation, This caused not only suffocation to the rescuer but also a problem that the pedestrian or the vehicle might be dropped on the opened underground structure.

In addition, the ladder fixed to the underground wall is installed at a certain distance downward from the lid of the underground structure so that when the worker enters or exits the underground structure such as a manhole, After placing the foot on the ladder inside the underground structure, it was able to descend. When it came out of the underground structure, the foot was placed on the top of the ladder. Then, the arm of the worker's arm raised the arm on the side surface of the underground structure, The body has to be taken out of the passage of the underground structure, so that there is a problem that the worker is very uncomfortable when checking the underground structure.

1. Domestic Patent Application No. 10-2010-0114235 (November 17, 2010, unpublished) 2. Korean Patent Publication No. 10-2009-0060033 (published on Jun. 11, 2009) 3. Korean Patent Publication No. 10-2009-011b-a9767 (2009.11b-a.17. Disclosed) 4. Domestic Patent Application No. 10-2009-0107451 (Published on November 9, 2009)

An object of the present invention, which is devised to overcome the above-described problems, is to provide a vertical movement path of an operator by forming a multi-stage staircase by being disposed in a tunnel pipe formed vertically in the ground, In particular, it is an object of the present invention to provide a safety ladder for a tunnel pipe which minimizes interference between a foot plate and a worker's foot part in the process of bumping the foot plate of a unit support, thereby ensuring convenience and safety in vertical movement.

The above object is achieved by the following constitutions provided in the present invention.

In the safety ladder for a tunnel pipe according to the present invention,

A safety ladder comprising a plurality of unit support members vertically spaced from an inner wall of a tunnel channel formed perpendicularly to a ground, the plurality of unit support members forming a stairway vertically spaced from an inner wall of the tunnel channel,

The unit support includes: a stationary bracket fixed to an inner wall of the tunnel space and having hinges formed therein; A foot plate disposed on the fixing bracket and protruding to the inside of the tunnel space; And a safety rim provided in a hinge structure on the hinge portion formed on the fixing bracket. When the safety rim is upwardly turned about the hinge portion, the hinge portion is brought into close contact with the inner wall of the tunnel space, While being horizontally deployed orthogonally to the inner wall,

A link arm is provided between the interlocking pins of the upper and lower unit support bodies so that the link arm is installed between the upper and lower interlocking pins of the unit support body,

When the safety rim provided on any one of the unit support members arranged on the inner wall of the tunnel space is turned upward or downward with respect to the hinge portion by the external force, the safety rim of the remaining unit support members interlocks with each other through the link arm As shown in FIG.

Preferably, an elevation groove portion in which a foot portion of a worker who hits the foot plate moves up and down is formed inwardly between the inner wall of the fixing bracket and the foot plate. An operator moving vertically through the tunnel pipe elevates the foot through the elevation groove portion So as to collide with the foot plate located inside.

More preferably, the linking pin has a stepped portion having a large diameter at an end portion thereof. The linking arm has a fitting groove portion having a diameter smaller than that of the head portion of the interlocking pin, and an inflow groove portion having a smaller diameter than the head portion of the interlocking pin. And the link arm is configured to pass through the interlocking pin through the entry groove and then be lowered by the weight of the interlocking pin so that the head of the interlocking pin is secured through the interlocking pin.

As described above, in the present invention, a plurality of unit support bodies are disposed on the inner wall of a tunnel pipe to provide an up-and-down movement path of an operator. In this case, an interlocking structure composed of a link arm is formed between safety rims formed on the unit support body, The safety limbs are turned up and down so as to form the safety limbs.

Further, in the present invention, a lifting groove portion is vertically opened between the inner wall of the fixing bracket and the foot plate.

In the course of vertical movement of the tunnel pipe, the operator moves the foot part up and down along the elevation groove part formed on the side part of the foot plate to sequentially hit the foot plate, while being in close contact with the inner wall of the tunnel pipe, So that the ergonomic convenience due to the vertical movement can be ensured and the operator can move vertically while hitting the foot plate in close contact with the inner wall of the tunnel channel, It is possible to secure safety according to the present invention.

FIG. 1 and FIG. 2 show the installation state and overall configuration of a safety ladder for a tunnel pipe proposed in the preferred embodiment of the present invention,
FIG. 3 shows a disassembling and assembling state and a planar construction of a unit support constituting the safety ladder for a tunnel pipe shown in FIGS. 1 and 2,
FIG. 4 is a detailed view of the bent plate body constituting the fixing bracket in the unit support shown in FIG. 3,
FIG. 5 is a view showing the assembled state of the link pin and the link arm formed in the safety rim in the safety ladder shown in FIGS. 1 and 2,
FIG. 6 shows a vertical movement of a tunnel channel through a safety ladder for a tunnel pipe proposed as a preferred embodiment of the present invention.

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Hereinafter, a safety ladder for a tunnel pipe according to a preferred embodiment of the present invention will be described in detail with reference to the accompanying drawings.

1 and 2 show an installation state and an entire construction of a safety ladder for a tunnel pipe proposed as a preferred embodiment of the present invention. FIG. 3 is a cross-sectional view of the safety ladder for a tunnel pipe shown in FIG. 1 and FIG. FIG. 4 is a detailed view showing a bent plate body constituting the fixing bracket in the unit support shown in FIG. 3. FIG. 5 is a cross-sectional view of the unit support shown in FIGS. 1 and 2 6 shows a vertical movement state of a tunnel pipe through a safety ladder for a tunnel pipe according to a preferred embodiment of the present invention. FIG. 6 is a view showing an assembly state of a link pin and a link arm in a safety ladder in a safety ladder shown in FIG. .

As shown in FIG. 1, the safety ladder 1 for a tunnel pipe proposed in the preferred embodiment of the present invention is vertically spaced on the inner wall of a tunnel pipe 100 formed perpendicularly to the ground, Thereby forming a vertical movement path of the worker on the inner wall of the floor.

As shown in FIGS. 1 and 2, the safety ladder 1 for a tunnel pipe includes a plurality of unit support bodies 1 'which are vertically spaced apart from each other on the inner wall of the tunnel pipe 100 to form a vertically spaced stairway So that the worker moves vertically along the inner wall of the tunnel pipe 100 while sequentially bending the stairs formed by the unit structure 1 '.

Here, the unit support 1 'includes a stationary bracket 10 fixed to the inner wall of the tunnel pipe 100 and having a hinge portion 11b-a; A foot plate 20 disposed on the fixing bracket 10 and protruding to the inside of the tunnel pipe 100; And a safety rim 30 installed in a hinge structure on a hinge portion 11b-a formed on the fixing bracket 10. [

Here, the safety rim 30 is a safety means for protecting the worker's fall body as a whole to prevent a fall accident of the worker, which may occur during the raising and lowering movement process.

The safety limb 30 is pivoted downward about the hinge 11b-a in the course of using the safety ladder 1 and is horizontally laid horizontally orthogonal to the inner wall of the tunnel pipeline 100, The worker who moves up and down along the inner wall is prevented from falling, and the worker stands up vertically by turning upward and downward to secure the open space of the tunnel pipe 100.

At this time, a rotation bush 33 is provided on the outer wall of the safety rim 30 to minimize the occurrence of friction due to interference between the safety rim 30 and the body of the worker by the rotation bush 33.

In the present embodiment, the safety rims 30 of the unit support bodies 1 ', which are vertically spaced from each other on the inner wall of the tunnel pipe 100, To ensure the convenience and speed of the service.

Particularly, in this embodiment, the link interlocking structure including the link arm 32 is formed between the safety rims 30 of the unit support bodies 1 ', and the safety rim 30 formed on each unit support body 1' So that the hinge portion 11b-a is rotated around the hinge portion 11b-a.

At this time, a supporting end 11b-b for supporting the downwardly-turned safety rim 30 is formed at the rear half of the hinge portion 11b-a, and the supporting end 11b-b is downwardly supported by the supporting end 11b- The downward turning angle of the turned safety rim 30 is limited and the occurrence of deflection of the safety rim 30 is suppressed.

To this end, in the present embodiment, an interlocking pin 31 is formed to protrude from both sides of the safety rim 30 of each unit support body 1 'disposed on the inner wall of the tunnel channel 100, The link arm 32 is disposed between the interlocking pins 31 of the frame 1 '.

1, the safety rim 30 provided on any one unit support 1 'of the unit support 1' disposed on the inner wall of the tunnel channel 100 is supported by the hinge portions 11b , the safety limbs 30 of the remaining unit supports 1 'are interlocked with each other through the link arm 32 so as to swing upward or downward.

5, the link arm 32 is formed with a fastening groove 32a-4c having a diameter smaller than that of the head of the interlocking pin 31. The fastening pin 31 is formed of a rod- a and the connecting groove 32a-a having a diameter smaller than that of the head of the interlocking pin 31 are formed so as to be vertically communicated with each other. The link arm 32 is connected to the connecting groove 32a-a After passing through the interlocking pin 31, the head of the interlocking pin 31 is fixed to the rotating structure through the fitting groove 32a-a while being lowered by its own weight.

Therefore, the safety rims 30 of the unit support bodies 1 'are fixed to the link arms 32 by the assembly holes 32a of the link arms 32 having the fastening groove portions 32a-b and the entry groove portions 32a-a. So that the quickness and convenience of the construction can be ensured.

At this time, a 'C' type elastic clip (not shown) is attached to the inner wall of the entry groove 32a-b to fasten the interlocking pin 31, which has moved from the entry groove 32a-b to the attachment groove 32a- The interlocking pin 31 is moved to the fastening groove portion 32a-a and the fastening pin 31 is fastened to the entry groove portion 32a-b by the 'C' type elastic clip 32a-c, So as to prevent the escape phenomenon.

Thus, the worker moves the safety rim 30 of each unit support 1 ', which is vertically erected in the vertical movement of the tunnel pipe 100, to the inner wall of the tunnel pipe 100 through the link arm 32 And vertically moves along the inner wall of the tunnel pipe 100 while sequentially hitting the foot plate 20 of each unit support body 1 '.

3 and 6, a lifting path of the operator's foot is formed on each of the unit structures 1 'that are vertically spaced on the inner wall of the tunnel pipe 100, So that it is possible to stabilize the vertical movement of the worker by suppressing the physical interference between the foot 20 and the foot portion of the worker.

To this end, in the present embodiment, an elevation groove 40 is formed so as to penetrate inwardly between the outside of the footrest 20 and the inside of the safety rim 30 so as to pass through the footrest 20, Up and down along the lifting and lowering groove portion 40 formed on the side of the foot plate 20 and then hit the foot plate 20 located on the inside.

According to the present embodiment, the fixing bracket 10 for fixing the footrest 20 includes a pair of bending bodies 11 (a) and 11 (b) each having a fixing hole 11a-a and a hinge 11b- And 11 ', and these bending bodies 11 and 11' are symmetrically arranged on the left and right sides.

Referring to the drawing, the bending body 11, 11 'has a hinge portion 11b formed with a hinge portion 11b-a on the outer side of a fixing piece 11a formed with a fixing hole 11a-a so as to be spaced apart from each other, The fixing piece 11a is mounted on the mounting surface formed on the inner wall of the tunnel pipe 100 and then fixed to the tunnel pipe 11a through a fixing bolt B passing through the fixing hole 11a- 100).

A foot plate 20 having a plurality of foot plates 21 arranged at regular intervals is fixed to the opposite ends of the pair of bending bodies 11 and 11 ' The bending bodies 11 and 11 'form a single body with the foot plate 20 through welding.

At this time, the footrest 21 is horizontally protruded orthogonally to the inner wall of the tunnel pipe 10, and the footrest can be stably supported by a wide support area, thereby having improved stability.

In this embodiment, the extension plate 22 is disposed in the advancement / retraction structure on the footrest 21 of the footrest 20, and as shown in FIGS. 3 and 6, The operator can move the extension plate 22 inward and outward according to the physical characteristics of the operator and adjust the ground width of the foot plate 20 and the lift width of the lift- The width of the groove 40 can be adjusted to enable stable up and down movement.

Therefore, an elevation groove 40 is vertically opened between the inner wall of the bending body 11, 11 'and the side of the foot plate 20, and the worker moves the tunnel pipe 100 through the elevation groove 40 The foot portion is moved up and down along the lift groove portion 40 formed on the side portion of the foot plate 20 so as to be in close contact with the inner wall of the tunnel pipe 100 while sequentially bumping the foot plate It is possible to move vertically.

The foot plate 20 has a configuration in which the extension plate 22 is installed on the foot plate 21 so as to move forward and backward according to the physical characteristics and the climbing form of the worker, Since the width of the lifting groove 40 can be adjusted, it is possible to form an optimum climbing environment according to the vertical movement.

1. Safety ladder
One'. Unit structure
10. Fixing brackets 11, 11 '. 'L' shaped bending body
11a-a. The fixed piece portion 11a-a. Fixed ball
11b. The supporting piece portion 11b-a. Hinge
11b-b. Supporting end
20. Footstep 21. Footstep
21. Extension
30. Safe rim 31. Interlocking pin
32. Link arm 32a. Assembly
32a-a. The entry grooves 32a-b. Fastening groove
32a-c. 'C' type elastic clip 40. Lifting groove
100. Tunnel line B, fixing bolt

Claims

A safety ladder comprising a plurality of unit support members vertically spaced from an inner wall of a tunnel channel formed perpendicularly to a ground, the plurality of unit support members forming a stairway vertically spaced from an inner wall of the tunnel channel,
The unit support includes: a stationary bracket fixed to an inner wall of the tunnel space and having hinges formed therein; A foot plate disposed on the fixing bracket and protruding to the inside of the tunnel space; And a safety rim installed in a hinge structure formed in the fixing bracket in a hinge structure,
The safety rim is configured to be closely attached to the inner wall of the tunnel space when the hover is turned upward with respect to the hinge portion and horizontally extended perpendicularly to the inner wall of the tunnel space when the hinge portion is pivoted downward about the hinge portion,
A link arm is provided between the interlocking pins of the upper and lower unit support bodies so that the link arm is installed between the upper and lower interlocking pins of the unit support body,
When the safety rim provided on any one of the unit support members disposed on the inner wall of the tunnel space is turned upward or downward with respect to the hinge portion by an external force, the safety rim of the remaining unit support members is interlocked with the link arm to rotate up and down And a safety ladder for a tunnel duct.

The work machine as claimed in claim 1, wherein an elevation groove portion in which a foot portion of a worker bumping a foot plate moves up and down is formed inwardly between the inner wall of the fixing bracket and the foot plate, And then to collide with a foot plate located on the inner side of the safety ladder.

[2] The apparatus according to claim 1, wherein the interlocking pin has a stepped portion having a large diameter at an end portion thereof,
Wherein the link arm is formed with an assembling hole having a smaller diameter than that of the head portion of the interlocking pin and an entry groove portion having a diameter smaller than that of the head portion of the interlocking pin so that the link arm is vertically communicated with the interlocking pin, Wherein the safety ladder is constructed to be fastened to the head portion of the interlocking pin through the catching groove portion while being lowered.