Tunnel cover plate

Abstract

The utility model discloses a tunnel cover plate which comprises a bottom frame and a cover plate body hinged to the bottom frame, a limiting chain assembly is installed between the cover plate body and the bottom frame, a rotatable sector plate is installed between the cover plate body and the bottom frame, the sector plate is connected with a balance weight assembly used for driving the sector plate body to rotate, and the balance weight assembly comprises a balance weight block. The counterweight assembly is connected with a control system used for controlling the counterweight block to move up and down. During use, people do not need to touch the cover plate, time and labor are saved, and use is safe; moreover, the cover plate opening device has a manual cover plate opening function and an electric cover plate opening function, and when an electric power system breaks down, the cover plate can be opened through manual operation.

Description

Technical Field

[0001] The utility model relates to a tunnel cover plate. Background Art

[0002] Tunnel covers of the prior art often have the following problems when in use: when opening the cover, a person needs to bend over and pull open the cover, and needs to use unlocking components to open the lock first, which is time-consuming and laborious; because only the support rod is used to support the cover, the support rod force is limited, and the force cannot be too large or too small. If it is too large, it is easy to bounce to people when opening, which is unsafe, and if the force is too small, it is easy to fail to open. Utility Model Content

[0003] In view of the above-mentioned defects of the prior art, the purpose of the present utility model is to provide a tunnel cover.

[0004] The technical solution of the utility model is: a tunnel cover plate, including a bottom frame and a cover plate hinged to the bottom frame, a limit chain assembly is installed between the cover plate and the bottom frame, a rotatable fan-shaped plate is installed between the cover plate and the bottom frame, the fan-shaped plate is connected to a counterweight assembly for driving the fan-shaped plate to rotate, the counterweight assembly includes a counterweight block, and the counterweight assembly is connected to a control system for controlling the up and down movement of the counterweight block.

[0005] Furthermore, the limiting chain assembly includes a chain and a gas spring, the gas spring is hinged in the bottom frame, one end of the chain is fixed to the cover plate, and the other end is fixed to the gas spring.

[0006] Furthermore, an axis hole is provided on the outer edge of the middle part of the sector plate, and a fixed axis is provided on the inner wall of one side of the bottom frame. The fixed axis passes through the axis hole, so that the sector plate is rotatably connected to the fixed axis.

[0007] Furthermore, one end of the sector plate is rotatably connected to a roller, and the roller rests on the bottom of the cover plate.

[0008] Furthermore, the counterweight assembly also includes a motor wire rope, a counterweight wire rope and multiple pulley blocks. Pulley blocks are fixed to the tunnel civil concrete surface and the bottom frame. A wire rope pressure block is fixed to the end of the fan-shaped plate away from the roller. The counterweight wire rope passes around the pulley block. One end of the counterweight wire rope is fixed to the wire rope pressure block, and the other end of the counterweight wire rope is fixed to the top of the counterweight block.

[0009] Furthermore, the control system includes an electric control system, a manual control system and a motor. The motor is fixed to the concrete surface of the tunnel. The output shaft of the motor is connected to a drum. One end of the motor wire rope is fixedly connected to the drum, and the other end is fixed to the top of the counterweight block.

[0010] Furthermore, the electric control system includes an electric control box, which is connected to the motor via an electric control line, and the manual control system includes a manual control handle, which is connected to the motor via a manual control line.

[0011] The tunnel cover provided by the utility model has the following beneficial effects: no one needs to touch the cover when using it, which saves time and effort and is safer to use; and the utility model has both manual and electric functions of opening the cover, and when the power system fails, manual operation can also play the role of opening the cover. BRIEF DESCRIPTION OF THE DRAWINGS

[0012] Figure 1 This is a schematic diagram of the structure of the utility model when the cover is in a closed state;

[0013] Figure 2 This is a schematic diagram of the structure of the utility model when the cover is in an open state;

[0014] Figure 3 It is a schematic diagram of the installation of the cover plate, bottom frame, fan-shaped plate and limit chain assembly of the utility model;

[0015] Figure 4 It is a structural schematic diagram of the fan-shaped plate of the utility model.

[0016] As shown in the figure: 1-bottom frame, 2-cover plate, 3-limiting chain assembly, 31-chain, 32-gas spring, 4-fan-shaped plate, 41-axis hole, 5-counterweight block, 6-fixed shaft, 7-roller, 8-motor wire rope, 9-counterweight wire rope, 10-pulley block, 11-wire rope pressure block, 12-motor, 13-drum, 14-electric control box, 15-electric control circuit, 16-manual control handle, 17-manual control circuit. DETAILED DESCRIPTION

[0017] In order to more intuitively and completely understand the technical solution of the utility model, the following non-limiting feature description is now provided in conjunction with the accompanying drawings of the utility model:

[0018] like Figure 1 — Figure 4 As shown, a tunnel cover comprises a base frame 1 and a cover 2 hinged to the base frame 1, a limit chain assembly 3 is installed between the cover 2 and the base frame 1, a rotatable fan-shaped plate 4 is installed between the cover 2 and the base frame 1, the fan-shaped plate 4 is connected to a counterweight assembly for driving the fan-shaped plate 4 to rotate, the counterweight assembly comprises a counterweight block 5, and the counterweight assembly is connected to a control system for controlling the up and down movement of the counterweight block 5.

[0019] like Figure 3 As shown, the limiting chain assembly 3 includes a chain 31 and a gas spring 32 . The gas spring 32 is hinged in the bottom frame 1 . One end of the chain 31 is fixed to the cover plate 2 , and the other end is fixed to the gas spring 32 .

[0020] like Figure 3 and Figure 4As shown, in order to facilitate the rotation of the fan-shaped plate 4, an axis hole 41 is provided on the outer edge of the middle part of the fan-shaped plate 4, and a fixed axis 6 is provided on the inner wall of one side of the bottom frame 1. The fixed axis 6 passes through the axis hole 41, so that the fan-shaped plate 4 is rotatably connected with the fixed axis 6.

[0021] like Figure 3 and Figure 4 As shown, one end of the sector plate 4 is rotatably connected to a roller 7, and the roller 7 rests on the bottom of the cover plate 2. The contact between the roller 7 and the cover plate 2 generates rolling friction, and the resistance is small.

[0022] like Figure 1 , Figure 2 As shown, the counterweight assembly also includes a motor wire rope 8, a counterweight wire rope 9 and a plurality of pulley blocks 10. The pulley blocks 10 are fixed at the tunnel civil concrete surface and the bottom frame 1. A wire rope pressure block 11 is fixed to the end of the sector plate 4 away from the roller 7. The counterweight wire rope 9 passes around the pulley block 10. One end of the counterweight wire rope 9 is fixed to the wire rope pressure block 11, and the other end of the counterweight wire rope 9 is fixed to the top of the counterweight block 5.

[0023] like Figure 1 , Figure 2 As shown, the control system includes an electric control system, a manual control system and a motor 12. The motor 12 is fixed to the concrete surface of the tunnel. The output shaft of the motor 12 is connected to a drum 13. One end of the motor wire rope 8 is fixedly connected to the drum 13, and the other end is fixed to the top of the counterweight 5. The electric control system includes an electric control box 14, which is connected to the motor 12 through an electric control line 15. The manual control system includes a manual control handle 16, which is connected to the motor 12 through a manual control line 17.

[0024] The motor 12 has an electromagnetic lock (not shown) and a mechanical brake lock (not shown) inside, and the electromagnetic lock is connected to the mechanical brake lock. The electric control box 14 is connected to the electromagnetic lock of the motor 12 through the electric control line 15. The manual control handle 16 is connected to the mechanical brake lock of the motor 12 through the manual control line 17. When the cover 2 is closed, the motor 12 can be turned on by the electric control box 14, and the motor 12 drives the drum 13 to rotate, and the drum 13 drives the motor wire rope 8 to release the counterweight 5. The counterweight 5 falls due to gravity. At this time, the counterweight wire rope 9 pulls the fan plate 4 to rotate, and the roller 7 on the fan plate 4 acts on the cover 2, and the cover 2 is pushed open. Similarly, when there is no electricity or the motor 12 is damaged, the manual control handle 16 can be operated to unlock the motor 12, release the counterweight 5, and open the cover 2. When the cover plate 2 is open, the motor 12 can be controlled to reverse through the electric control box 14, and the motor 12 rolls the motor wire rope 8 to lift the counterweight block 5. At this time, the counterweight wire rope 9 is released, and the gas spring 32 of the limit chain assembly 3 retracts, providing an initial recovery power to the cover plate 2, driving the chain 31 to pull the cover plate 2 down, and then the cover plate 2 is closed under its own gravity. The limit chain assembly 3 can provide damping during the opening process of the cover plate 2, and can also provide initial recovery power when it is closed.

[0025] The utility model provides a tunnel cover which does not require people to touch the cover 2 when in use, thus saving time and effort and being safer to use. Moreover, the utility model has both manual and electric functions of opening the cover 2. When the power system fails, manual operation can also play the role of opening the cover 2.

[0026] Of course, the above are only preferred embodiments of the present invention, and the patent scope of the present invention is not limited thereto. All simple modifications and equivalent structural changes made using the description and drawings of the present invention should be included in the patent protection scope of the present invention.

Claims

1. A tunnel cover, comprising a bottom frame and a cover hinged to the bottom frame, characterized in that: A limit chain assembly is installed between the cover plate and the bottom frame, a rotatable fan-shaped plate is installed between the cover plate and the bottom frame, the fan-shaped plate is connected to a counterweight assembly for driving the fan-shaped plate to rotate, the counterweight assembly includes a counterweight block, and the counterweight assembly is connected to a control system for controlling the up and down movement of the counterweight block.

2. A tunnel cover according to claim 1, characterized in that: The limiting chain assembly comprises a chain and a gas spring. The gas spring is hinged in the bottom frame. One end of the chain is fixed to the cover plate, and the other end is fixed to the gas spring.

3. The tunnel cover according to claim 1, characterized in that: An axis hole is arranged on the outer edge of the middle part of the sector plate, and a fixed axis is arranged on the inner wall of one side of the bottom frame. The fixed axis passes through the axis hole, so that the sector plate is rotatably connected with the fixed axis.

4. A tunnel cover according to claim 1 or 3, characterized in that: One end of the fan-shaped plate is rotatably connected to a roller, and the roller rests on the bottom of the cover plate.

5. The tunnel cover according to claim 3, characterized in that: The counterweight assembly also includes a motor wire rope, a counterweight wire rope and multiple pulley blocks. Pulley blocks are fixed to the tunnel civil concrete surface and the bottom frame. A wire rope pressure block is fixed to the end of the fan-shaped plate away from the roller. The counterweight wire rope passes around the pulley block. One end of the counterweight wire rope is fixed to the wire rope pressure block, and the other end of the counterweight wire rope is fixed to the top of the counterweight block.

6. The tunnel cover according to claim 5, characterized in that: The control system includes an electric control system, a manual control system and a motor. The motor is fixed to the concrete surface of the tunnel. The output shaft of the motor is connected to a drum. One end of the motor wire rope is fixedly connected to the drum, and the other end is fixed to the top of the counterweight block.

7. The tunnel cover according to claim 6, characterized in that: The electric control system includes an electric control box, which is connected to the motor through an electric control line. The manual control system includes a manual control handle, which is connected to the motor through a manual control line.

Images