Air door air leakage prevention device suitable for underground rail transportation roadway

Abstract

The utility model relates to the field of mine ventilation, especially to the air door air leakage prevention device suitable for underground rail transport lane, including traction rope, sealing rubber and the buffer assembly for controlling the moving speed of sealing rubber, the traction rope one end fixed mounting in the air door door frame top, the other end connects sealing rubber, the air door closing state time, sealing rubber will the gap between the air door bottom and the bottom plate and the rail shelter, the buffer assembly includes fixed end and telescopic end, and the fixed end fixed mounting is in the air door top, and the telescopic end connects sealing rubber. In the air door closing state process, sealing rubber is affected by the force of buffer assembly and extends out of the air door, and the gap between the air door bottom and the lane bottom plate, the rail is blocked, can effectively prevent the emergence of the air door air leakage problem, in the air door opening process, the air door in the baffle and sealing rubber are retracted under the traction effect of traction rope, when the air door is closed, sealing rubber lags behind and extends out of the air door, effectively avoids the scratch of sealing rubber.

Description

Technical Field

[0001] This utility model relates to the field of mine ventilation, and in particular to a leak-proof air door device suitable for underground rail transport roadways. Background Technology

[0002] Mine ventilation systems are crucial auxiliary systems for safe production in mines. An underground ventilation system is a sophisticated ventilation network; air doors control airflow direction and regulate air volume to maintain pressure balance in different areas. Air leakage disrupts this balance, causing airflow turbulence, reducing effective airflow rate, and increasing energy consumption during ventilation operation. The essence of air leakage in underground air doors is that airflow passes through the gaps between the air door and the surrounding structure. The airtightness of the air doors is key to ensuring the delivery of fresh air to the working face and the timely removal of polluted air.

[0003] During the installation of dampers, the gaps between the damper body and the surrounding door frame and base plate are generally sealed with sealing rubber to effectively reduce air leakage. This method is usually effective in trackless transport tunnels. However, in rail transport tunnels, due to the laying of rails on the base plate, a large gap will be created between the damper and the base plate / rails. During opening and closing, the sealing rubber is repeatedly scraped by the rails and stones, causing it to break quickly and resulting in poor sealing. This increases the difficulty of ventilation management, and frequent replacement of the sealing rubber also leads to increased costs. Therefore, to solve the problem of damaged sealing rubber on dampers in rail transport tunnels, effective protection of the sealing rubber is needed during the opening and closing of the dampers to reduce the difficulty of ventilation management. Utility Model Content

[0004] In order to overcome the shortcomings of the existing technology, this utility model provides an air leakage prevention device for air doors in underground rail transport roadways, which effectively protects the sealing rubber and reduces the occurrence of air leakage problems.

[0005] To achieve the above objectives, this utility model discloses an air leakage prevention device for ventilation doors in underground rail transport roadways, comprising a traction rope, a sealing rubber sheet, and a buffer assembly for controlling the moving speed of the sealing rubber sheet. One end of the traction rope is fixedly installed on the top of the ventilation door frame, and the other end is connected to the sealing rubber sheet. When the ventilation door is closed, the sealing rubber sheet blocks the gap between the bottom of the ventilation door and the base plate and rail. The buffer assembly includes a fixed end and a telescopic end. The fixed end is fixedly installed on the top of the ventilation door, and the telescopic end is connected to the sealing rubber sheet.

[0006] Furthermore, the buffer component is a damping spring, and the maximum contraction of the damping spring is greater than or equal to the maximum rise of the lower end of the traction rope after the damper is fully opened.

[0007] Furthermore, the damper has an internal space that extends along its height, and the damper's anti-leakage device is installed in the internal space.

[0008] Furthermore, it also includes a wind deflector, the upper end of which is fixedly installed with the traction rope and the telescopic end, and the lower end of which is fixedly installed with the sealing rubber. Guide grooves are provided on both sides of the internal space, and the sealing rubber and the two ends of the wind deflector slide within the guide grooves.

[0009] Furthermore, two damping springs are arranged in parallel and installed on both sides of the traction rope respectively. The internal space is provided with a sliding groove along the height direction of the damper, and the traction rope slides in the sliding groove.

[0010] Furthermore, the lower end of the sealing rubber is provided with an opening groove that matches the cross-section of the rail.

[0011] Furthermore, the damper is provided with an openable maintenance window for inspection and maintenance.

[0012] Compared with the prior art, the beneficial effects of this utility model are:

[0013] 1. The air leakage prevention device of this utility model, when the air door is closed, the sealing rubber is extended out of the air door by the force of the buffer component, blocking the gap between the bottom of the air door and the tunnel floor and the rails, which can effectively prevent the air door from leaking; when the air door is open, the baffle plate and sealing rubber inside the air door are pulled back by the traction of the traction rope, which effectively avoids the sealing rubber from scratching the rails and stones on the floor.

[0014] 2. By setting a damping spring, when the damper is opened, the damping spring is rapidly compressed under the force of the traction rope. When the damper is closed, the traction force of the traction rope is gradually removed. The extension process of the damping spring is not instantaneous like that of an ordinary spring, but rather there is a speed lag and displacement lag. Therefore, the sealing rubber will only extend out of the damper after it is completely closed. This can avoid wear caused by the sealing rubber rubbing against the rail during the closing process of the damper, extend the service life of the sealing rubber, and reduce management difficulty and material costs.

[0015] 3. The lifting and lowering of the traction rope and wind deflector can be effectively controlled by the traction rope, slide rail, wind deflector, and guide groove, ensuring the stability of the device.

[0016] 4. The sealing rubber and the wind baffle inside the device are fixed with screws, which facilitates disassembly and installation. A maintenance window is provided at the bottom of one side of the damper to facilitate daily maintenance and repair of the device. Attached Figure Description

[0017] Figure 1 This is a schematic diagram of the overall structure of the air door anti-leakage device of this utility model;

[0018] Figure 2 Top view of the damper in the open position;

[0019] Figure 3 Side view of the damper in the open state;

[0020] Figure 4 This is a schematic diagram of the maintenance window structure;

[0021] Figure 5 for Figure 1 Enlarged view of the structure of part A in the middle.

[0022] In the diagram, 1. traction rope; 2. sealing rubber; 3. damping spring; 4. wind deflector; 5. guide groove; 6. slide groove; 7. maintenance window; 8. railway track; 9. damper frame. Detailed Implementation

[0023] The following is in conjunction with the appendix Figure 1 To be continued Figure 5 The principles and features of this utility model are described, and the examples given are only used to explain this utility model and are not intended to limit the scope of this utility model.

[0024] In mines, air doors are installed in mine passageways via door frames. An air door typically consists of two opposing door panels. During installation, the gaps between the air door panels and the surrounding door frame and base plate are sealed with sealing rubber. In rail-operated transport roadways, due to the presence of rails on the base plate, a significant gap exists between the bottom of the air door and the base plate / rails. During opening and closing, the sealing rubber is repeatedly scraped by the rails and stones, accelerating its wear and tear.

[0025] To address the aforementioned problems, this utility model proposes an air leakage prevention device for ventilation doors in underground rail transport roadways. This device can be installed on the outer surface of the ventilation door, but is preferably installed inside the door to protect various components. Specifically, each door leaf has an internal space extending along its height, and the air leakage prevention device of this utility model is installed within this internal space. The ventilation door also has an openable maintenance window 7 for inspecting and maintaining the air leakage prevention device.

[0026] This device includes a traction rope 1, a buffer assembly, and a sealing rubber sheet 2. One end of the traction rope 1 is fixedly installed on the top of the damper frame 9 and can be secured with a locking device. The other end passes through the internal space of the damper and connects to the upper end of the sealing rubber sheet 2. The length of the traction rope 1 is approximately equal to the height of the damper. The height of the sealing rubber sheet 2 is adapted to the gap between the bottom of the damper and the base plate, so that when the damper is closed, the traction rope 1 hangs down naturally, and the sealing rubber sheet 2 just covers the gap between the bottom of the damper, the base plate, and the rail 8. Specifically, the lower end of the sealing rubber sheet 2 has an opening groove adapted to the cross-section of the rail 8 to improve the sealing performance of the sealing rubber sheet 2 when the damper is closed. A sliding groove 6 is provided in the internal space of the damper along the height direction of the damper. The traction rope 1 slides in the sliding groove 6, which plays a stabilizing and guiding role.

[0027] The buffer assembly is fixed inside the damper. The buffer assembly includes a fixed end and a telescopic end. The fixed end is fixedly installed on the top of the damper, and the telescopic end connects downwards to the upper end of the sealing rubber 2. When the damper is closed, the traction rope 1 is taut due to the action of the buffer assembly. To stabilize the position of the sealing rubber 2, in one embodiment, two sets of buffer assemblies are provided. The traction rope 1 is positioned near the central axis inside the damper, and the two sets of buffer assemblies are symmetrically arranged on both sides of the traction rope 1. When the damper is open, the traction rope 1 pulls the sealing rubber 2 upwards. When the damper is closed, the buffer assembly controls the moving speed of the sealing rubber 2, so that after the damper is closed, the sealing rubber 2 slowly extends, preventing it from being scratched.

[0028] The buffer assembly can be configured using existing technologies such as hydraulic dampers. In this embodiment, the buffer assembly is a damping spring 3, with two damping springs 3 arranged in parallel, respectively installed on both sides of the traction rope 1. The specific structure of the damping spring 3 is existing technology and will not be described in detail here. The telescopic end of the damping spring 3 is a support rod, and the end of the support rod is fixedly installed to the upper end of the sealing rubber 2. When the damper is closed, the damping spring 3 is in a naturally extended state, and its length is equivalent to the length of the traction rope 1 to keep the sealing rubber 2 horizontal. When the damper is opened, the traction rope 1 pulls the sealing rubber 2 upward, and the damping spring 3 is compressed by the force of the traction rope 1. Its maximum compression is greater than or equal to the maximum rise of the traction rope 1 after the damper is fully opened.

[0029] Because the sealing rubber 2 has low hardness, in order to maintain the stability of the sealing rubber 2 during movement, in one embodiment, a wind deflector 4 is provided between the sealing rubber 2, the support rod of the damping spring 3, and the traction rope 1. The upper end of the wind deflector 4 is fixedly installed with the traction rope 1 and the support rod, and the lower end is fixedly installed with the sealing rubber 2. The fixing method can be a commonly used method in the prior art, such as screw fixing. Guide grooves 5 are provided on both sides of the internal space of the damper. The two ends of the sealing rubber 2 and the wind deflector 4 slide in the guide grooves 5, which plays a stabilizing guiding role.

[0030] The working process of this utility model is as follows:

[0031] When the damper is closed, under the weight of the damping spring 3, the baffle plate 4, and the sealing rubber 2, the sealing rubber 2 extends out of the damper, sealing the gap between the damper and the base plate and the rail 8, preventing airflow. During the opening of the damper, since the top of the traction rope 1 is fixed to the door frame, as the damper opens, the traction rope 1 gradually extends out of the damper. The traction rope 1 inside the damper rises along the slide groove 6. Driven by the force of the traction rope 1, the baffle plate 4 and the sealing rubber 2 rise along the guide groove 5, the damping spring 3 contracts, and the sealing rubber 2 retracts into the damper until the damper is fully open. During the closing process of the damper, the exposed traction rope 1 is gradually retracted into the damper and descends along the slide 6. The force of the traction rope 1 gradually decreases. Under the influence of the gravity of the baffle plate 4 and the sealing rubber 2, as well as the reaction force of the damping spring 3, the baffle plate 4 and the sealing rubber 2 descend along the guide groove 5. Due to the hysteresis effect of the damping spring 3, the damping spring 3 slowly returns to its original length until the damper is completely closed. The sealing rubber 2 extends out of the damper and blocks the gap between the damper and the base plate and the rail 8.

[0032] The above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A leak-proof device for ventilation doors in underground rail transport roadways, comprising a traction rope (1), a sealing rubber sheet (2), and a buffer assembly for controlling the moving speed of the sealing rubber sheet (2), characterized in that, One end of the traction rope (1) is fixedly installed on the top of the door frame (9), and the other end is connected to the sealing rubber (2). When the door is closed, the sealing rubber (2) covers the gap between the bottom of the door and the base plate and the rail (8). The buffer assembly includes a fixed end and a telescopic end. The fixed end is fixedly installed on the top of the door, and the telescopic end is connected to the sealing rubber (2).

2. The air leakage prevention device for ventilation doors in underground rail transport roadways according to claim 1, characterized in that, The buffer component is a damping spring (3), and the maximum contraction of the damping spring (3) is greater than or equal to the maximum rise of the lower end of the traction rope (1) after the damper is fully opened.

3. The air leakage prevention device for ventilation doors in underground rail transport roadways according to claim 2, characterized in that, The damper has an internal space that extends along its height, and the damper's air leakage prevention device is installed in the internal space.

4. The air leakage prevention device for ventilation doors in underground rail transport roadways according to claim 3, characterized in that, It also includes a wind deflector (4), the upper end of which is fixedly installed with the traction rope (1) and the telescopic end, and the lower end is fixedly installed with the sealing rubber (2). Guide grooves (5) are provided on both sides of the internal space, and the two ends of the sealing rubber (2) and the wind deflector (4) slide in the guide grooves (5).

5. The air leakage prevention device for ventilation doors in underground rail transport roadways according to claim 4, characterized in that, Two damping springs (3) are arranged in parallel and installed on both sides of the traction rope (1). A sliding groove (6) along the height direction of the damper is provided in the internal space, and the traction rope (1) slides in the sliding groove (6).

6. The air leakage prevention device for ventilation doors in underground rail transport roadways according to claim 1, characterized in that, The lower end of the sealing rubber (2) is provided with an opening groove that matches the cross-section of the rail (8).

7. The air leakage prevention device for ventilation doors in underground rail transport roadways according to claim 1, characterized in that, An openable maintenance window (7) is provided on the damper, and the maintenance window (7) is used for inspection and maintenance.

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