Manual opening and closing device for tunnel escape cover plate

Abstract

The utility model discloses a manual opening and closing device for a tunnel escape cover plate, which comprises a base, and an escape exit is arranged in the middle of the base. A steel cover plate is arranged above the escape exit, and one end of the steel cover plate is hinged to the base; an escape slide is arranged below the escape exit, and the upper end of the escape slide is fixedly connected with the side wall of the lower portion of the base. A small chain block is arranged above the inner wall of the tunnel and connected with the steel cover plate. The second lifting hook on the small chain block is connected with the cover plate pull ring on the steel cover plate, the force for manually driving the small chain block is greatly smaller than the force for directly pulling up the steel cover plate, disadvantaged escape persons such as women, the old and children can quickly open the steel cover plate in a labor-saving manner, an operator does not need to directly contact the steel cover plate, and the safety of the steel cover plate is improved. Time and labor are saved, and safety is high.

Description

Technical Field

[0001] The utility model relates to the technical field of tunnel escape devices, in particular to a manual opening and closing device for a tunnel escape cover plate. Background Art

[0002] In recent years, most large municipal tunnels have set up escape passages under the side of the carriageway slab. Tunnel escape shafts can provide escape passages for people in the tunnel when emergencies such as fire, landslides, flooding, explosions, etc. occur in the tunnel.

[0003] The structure of the tunnel escape and rescue cover opening system in the prior art generally includes a bottom frame and a cover hinged to the bottom frame. The cover can be opened electrically or manually. When opening the cover manually, a person needs to bend over and pull the cover open. The steel cover is heavy, so when opening it, the escapee needs to bend over and pull up the hand buckle, and then push the cover toward the tunnel side wall. The specific operation requires a lot of effort, and there is a risk of falling due to unstable standing position. If the electric opening mode is adopted, its construction cost and maintenance cost will increase significantly. In addition, once a dangerous situation occurs in the tunnel, it is very likely to affect the surrounding power supply network, resulting in the inability to guarantee the power supply of the electric cover, which delays a large amount of escape time for people in the tunnel. Summary of the invention

[0004] The utility model aims to provide a manual opening and closing device for a tunnel escape cover plate, so as to solve the problems raised in the above-mentioned background technology.

[0005] In order to achieve the above purpose, the utility model provides the following technical solutions:

[0006] A manual opening and closing device for a tunnel escape cover, comprising a base, wherein the base is arranged on a side close to an inner wall of the tunnel; the periphery of the base is fixedly connected to a carriageway plate by bolts, wherein an escape opening is opened in the middle of the base; a steel cover is arranged above the escape opening, wherein one end of the steel cover is hinged to the base; an escape slide is arranged below the escape opening, wherein the upper end of the escape slide is fixedly connected to the side wall below the base; a small hand chain hoist is arranged above the inner wall of the tunnel, wherein the small hand chain hoist is connected to the steel cover.

[0007] Preferably, a plurality of support arms are provided below the base, wherein one end of the support arm is fixedly connected to the inner wall of the tunnel.

[0008] Preferably, one end of the support arm away from the inner wall of the tunnel is movably connected to a damping support rod, wherein the top end of the piston rod of the damping support rod passes through the escape opening and is hinged to the bottom of the steel cover plate.

[0009] Preferably, the small hand chain hoist comprises a hand chain hoist body, a first hook, a lifting chain, a second hook and a hand chain.

[0010] Preferably, the first hook is fixedly connected to the hand chain hoist body, wherein the first hook is fixedly connected to the inner wall of the tunnel via a fixing ring.

[0011] Preferably, a sprocket is provided at the lower end of the lifting chain, wherein a second hook is provided below the sprocket.

[0012] Preferably, a cover plate pull ring is provided at the upper end of the steel cover plate, wherein the second hook is detachably connected to the cover plate pull ring.

[0013] Compared with the prior art, the utility model has the following beneficial effects: the utility model connects the second hook on the small hand chain hoist with the cover pull ring on the steel cover. The small hand chain hoist utilizes gear transmission, and the force of human power to drive the hand chain is much smaller than the force of directly pulling up the steel cover. This is beneficial for vulnerable escapees such as women, the elderly, and children to quickly and effortlessly open the steel cover. The operator does not need to directly contact the steel cover, which saves time and effort, has high safety, is low in cost, and is easier to install and maintain. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 It is a structural schematic diagram of the utility model;

[0015] Figure 2 It is a structural schematic diagram of the connection between the base and the steel cover plate of the utility model;

[0016] Figure 3 yes Figure 1 An enlarged schematic diagram of the structure at point A is shown.

[0017] Among them: 1. Base; 2. Tunnel; 3. Lane plate; 4. Escape exit; 5. Steel cover; 6. Escape slide; 7. Small hand chain hoist; 701. Hand chain hoist body; 702. First hook; 703. Lifting chain; 704. Second hook; 705. Hand chain; 706. Sprocket; 8. Support arm; 9. Damping support rod; 10. Fixed ring; 11. Cover pull ring. DETAILED DESCRIPTION

[0018] The utility model is further described in detail below in conjunction with the accompanying drawings.

[0019] Please refer to Figures 1 to 3 To achieve the above purpose, the utility model provides the following technical solutions:

[0020] A manual opening and closing device for a tunnel escape cover comprises a base 1, wherein the base 1 is arranged on a side close to an inner wall of a tunnel 2; the periphery of the base 1 is fixedly connected to a lane plate 3 by bolts, wherein an escape opening 4 is opened in the middle of the base 1, and an escape passage is arranged below the base 1; a steel cover 5 is arranged above the escape opening 4, wherein one end of the steel cover 5 is hinged to the base 1; an escape slide 6 is arranged below the escape opening 4, wherein the upper end of the escape slide 6 is fixedly connected to the side wall below the base 1; a small hand chain hoist 7 is arranged above the inner wall of the tunnel 2, wherein the small hand chain hoist 7 is connected to the steel cover 5; by the cooperation between the small hand chain hoist 7 and the steel cover 5, the small hand chain hoist 7 is convenient for directly pulling up the steel cover 5, and the operator does not need to directly contact the cover, which saves time and effort and has high safety.

[0021] Please refer to Figure 1 and Figure 2 As an embodiment of the utility model, a plurality of support arms 8 are provided under the base 1, wherein one end of each support arm 8 is inserted into the inner wall of the tunnel 2 and fixedly connected thereto; one end of the support arm 8 away from the inner wall of the tunnel 2 is movably connected to a damping support rod 9, wherein the top end of the piston rod of the damping support rod 9 passes through the escape opening 4 and is hinged to the bottom of the steel cover plate 5.

[0022] In the above-described scheme, the damping support rod 9 is used to support the opening and closing of the steel cover plate 5. When the steel cover plate 5 is opened under the pulling force of the small hand winch 7, the damping support rod 9 will push the steel cover plate 5 to move upward, so that the steel cover plate 5 is separated from the base 1. The damping support rod 9 can prevent the steel cover plate 5 from suddenly rebounding when it is opened and causing impact damage, and has high safety.

[0023] See also Figure 3 As an embodiment of the utility model, the small hand chain hoist 7 includes a hand chain hoist body 701, a first hook 702, a lifting chain 703, a second hook 704 and a hand chain 705; the first hook 702 is fixedly connected to the hand chain hoist body 701, wherein the first hook 702 is fixedly connected to the inner wall of the tunnel 2 through a fixing ring 10; a sprocket 706 is provided at the lower end of the lifting chain 703, wherein a second hook 704 is provided below the sprocket 706; a cover plate pull ring 11 is provided at the upper end of the steel cover plate 5, wherein the second hook 704 is detachably connected to the cover plate pull ring 11.

[0024] In the above-described scheme, the hand winch body 701 is fixed to the inner wall of the tunnel 2 by the first hook 702, and then the lifting chain 703 and the sprocket 706 are pulled downward, so that the second hook 704 arranged below the sprocket 706 hooks the cover pull ring 11 on the steel cover 5, and then the hand chain 705 is driven by manpower, so that the hand chain 705 drives the lifting chain 703 to pull the steel cover 5 upward, wherein the force of the hand chain 705 driven by manpower is much smaller than the force of directly pulling up the steel cover 5, which is conducive to the rapid and labor-saving opening of the steel cover 5 by vulnerable escapees such as women, the elderly, and children, and does not require the operator to directly contact the steel cover 5, which saves time and effort, has high safety, and is low in cost and easier to install and maintain.

[0025] Although the specific embodiments of the present invention are described above, those skilled in the art should understand that these are only examples, and the protection scope of the present invention is defined by the appended claims. Those skilled in the art may make various changes or modifications to these embodiments without departing from the principle and essence of the present invention, but these changes and modifications fall within the protection scope of the present invention.

Claims

1. A manual opening and closing device for a tunnel escape cover, comprising a base (1), wherein the base (1) is arranged on a side close to an inner wall of a tunnel (2); characterized in that: An escape opening (4) is provided in the middle of the base (1), and a steel cover plate (5) is provided above the escape opening (4), wherein one end of the steel cover plate (5) is hinged to the base (1); an escape slide (6) is provided below the escape opening (4), wherein the upper end of the escape slide (6) is fixedly connected to the lower side wall of the base (1); and a small hand chain hoist (7) is provided above the inner wall of the tunnel (2), wherein the small hand chain hoist (7) is connected to the steel cover plate (5).

2. A manual opening and closing device for a tunnel escape cover according to claim 1, characterized in that: A plurality of support arms (8) are provided below the base (1), wherein one end of the support arm (8) is fixedly connected to the inner wall of the tunnel (2).

3. A manual opening and closing device for a tunnel escape cover according to claim 2, characterized in that: The support arm (8) is movably connected to one end of the inner wall of the tunnel (2) away from the inner wall of the tunnel (2), wherein the top end of the piston rod of the damping support rod (9) penetrates the escape opening (4) and is hinged to the bottom of the steel cover plate (5).

4. A manual opening and closing device for a tunnel escape cover according to claim 1, characterized in that: The small hand chain hoist (7) comprises a hand chain hoist body (701), a first lifting hook (702), a lifting chain (703), a second lifting hook (704) and a hand chain (705).

5. A manual opening and closing device for a tunnel escape cover according to claim 4, characterized in that: The first hook (702) is fixedly connected to the hand chain hoist body (701), wherein the first hook (702) is fixedly connected to the inner wall of the tunnel (2) via a fixing ring (10).

6. A manual opening and closing device for a tunnel escape cover according to claim 4, characterized in that: A sprocket (706) is provided at the lower end of the lifting chain (703), wherein a second hook (704) is provided below the sprocket (706).

7. A manual opening and closing device for a tunnel escape cover according to claim 1, characterized in that: The upper end of the steel cover plate (5) is provided with a cover plate pull ring (11), wherein the second hook (704) is detachably connected to the cover plate pull ring (11).

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