Novel air door opening and closing system

Abstract

The utility model discloses a novel air door opening and closing system which comprises a pull box, the pull box is connected with a compressed air system through an air pipe and used for supplying air to an air door, the pull box is inversely fixed to a roadway side on one side of a roadway, and two fixed pulleys are arranged on the roadway side on the side and located over the pull box and close to a top plate. A switch control pull rope of the pull box extends upwards and horizontally and oppositely after winding the fixed pulleys, the end of the switch control pull rope is fixed to the position, close to the top plate, of the opposite side roadway side, an auxiliary switch control pull rope is fixedly connected to the horizontal section of the switch control pull rope, and the lower end of the auxiliary switch control pull rope droops to the position above the bottom plate. According to the utility model, the pull box is fixed on the roadway side instead of being fixed on the top plate through the fixed pulley, and the stress direction of the pull box is ingeniously changed through the fixed pulley, so that the use of the pull box and an air pipe is reduced, maintenance personnel can easily touch a maintenance part without danger to carry out high-altitude operation, and the maintenance efficiency and the safety are both improved.

Description

Technical Field

[0001] This utility model belongs to the technical field of pneumatic control system for tunnel dampers, and specifically relates to a novel damper opening and closing system. Background Technology

[0002] In the management of mine roadways, to achieve automatic control of airlocks and improve the efficiency of vehicle and personnel passage, pneumatic control systems are usually used to control the opening and closing of airlocks. In traditional solutions, a "pull-wire switch control system" (also known as a "pull-box" control system) is often used as a non-electrically controlled pneumatic switch. Its basic principle is to trigger the pneumatic control box to complete the opening and closing operation of the airlock by pulling the pull wires installed at the front, back, and top of the airlock.

[0003] This system typically requires branch pipelines at both ends of the roadway to extend the control signal from the pull-wire device to the pneumatic control box, where compressed air drives cylinders to open and close the dampers. However, in practical use, traditional pull-box systems have the following problems: 1. High failure rate: Due to the complex structure of the pull wire and pneumatic switch, they are susceptible to external interference or dust, often resulting in malfunctions, jamming, or failure. 2. Difficult installation: The system involves multiple air source branches and mechanical connection points, making the installation process cumbersome and requiring precise manual arrangement of cables and pipelines, resulting in a long construction period. 3. Inconvenient maintenance: The system components are distributed widely, and the air lines are complex and intertwined. Once a fault occurs, the troubleshooting and replacement process is time-consuming, leading to low maintenance efficiency. 4. Complex pipeline management: Multiple air source control pipelines are suspended from the roadway ceiling, which can easily cause layout chaos or interfere with traffic safety.

[0004] In summary, existing damper pull-wire control systems still face numerous technical bottlenecks in underground mining environments. There is an urgent need for a new type of damper switch system with optimized structure, simple wiring, and convenient maintenance to improve the operational reliability and on-site management efficiency of mine damper systems. Utility Model Content

[0005] To address the technical problems of high failure rate, difficult installation, numerous parts and pipelines, messy hanging, difficult maintenance, and high cost of dampers during use, this utility model provides a novel damper opening and closing system.

[0006] The technical solution adopted by this utility model is a novel air door switch system, including a pull box. The pull box is connected to a compressed air system through an air pipe for supplying air to the air door. The pull box is inverted and fixed to the side wall of the tunnel. Two fixed pulleys are set on the side wall above the pull box near the top plate. The switch control pull ropes of the pull box extend upwards, wrap around the fixed pulleys, and then extend horizontally in opposite directions. The ends of the switch control pull ropes are fixed to the opposite side wall near the top plate. An auxiliary switch control pull rope is fixedly connected to the horizontal section of the switch control pull rope. The lower end of the auxiliary switch control pull rope hangs down to the top plate.

[0007] Furthermore, two auxiliary switch control ropes are arranged at certain intervals on the horizontal section of each switch control rope, with the two auxiliary switch control ropes located on both sides of the roadway.

[0008] Furthermore, reflective stickers are affixed to the auxiliary switch control pull cord.

[0009] Furthermore, it includes a main control box, which is located on the side of the alley adjacent to the pull box.

[0010] Compared with the prior art, the present invention has the following beneficial effects:

[0011] 1. By using fixed pulleys, the trolley box is changed from being fixed to the roof plate to being fixed to the side wall. Through the clever change of the force direction of the trolley box by the fixed pulley, the use of trolley boxes and air pipes is reduced, and maintenance personnel no longer need to risk working at heights. They can easily reach the maintenance parts, thus improving both maintenance efficiency and safety.

[0012] 2. By adopting the damper control device of this utility model, the number of pull boxes is reduced from 8 to 4, and the number of air valves is reduced from 16 to 8. The number of accessories is greatly reduced, effectively reducing the probability of damper failure caused by air valve damage due to harsh environmental factors such as dust and moisture. At the same time, the short-distance connection and fewer interfaces, combined with the significant reduction in air pipe length, not only reduce damper failure caused by air pipe leakage, but also make the pipeline layout more standardized and neat. Attached Figure Description

[0013] Figure 1 This is a front view of the present invention;

[0014] Figure 2 This is a side view of the present invention.

[0015] In the diagram: 1. Pull box; 2. Air pipe; 3. Compressed air system; 4. Channel; 5. Fixed pulley; 6. Switch control pull rope; 7. Auxiliary switch control pull rope. Detailed Implementation

[0016] To better understand the purpose, structure, and function of this utility model, a novel damper switch system of this utility model will be described in further detail below with reference to the accompanying drawings.

[0017] like Figure 1 and Figure 2As shown, a novel damper switch system includes a pull box 1, which is connected to a compressed air system 3 via an air pipe 2 for supplying air to the damper. The pull box 1 is fixed upside down on one side of the tunnel 4. Two fixed pulleys 5 are installed on the tunnel side directly above the pull box 1 near the top plate. The switch control pull ropes 6 of the pull box 1 extend upwards, wrap around the fixed pulleys 5, and then extend horizontally in opposite directions. The ends of the switch control pull ropes 6 are fixed to the opposite tunnel side near the top plate. An auxiliary switch control pull rope 7 is fixedly connected to the horizontal section of the switch control pull rope 6. The lower end of the auxiliary switch control pull rope 7 hangs down to the top plate.

[0018] This utility model abandons the traditional top-hanging method and replaces it with a fixed-side fixation, which greatly reduces the difficulty of fixing. It creatively uses a fixed pulley 5 to change the force direction of the pull box 1, and firmly installs the pull box 1 on the side of the tunnel. With the help of the connected auxiliary switch, the pull rope 7 is controlled to realize the smooth opening and closing of the air door. This not only greatly reduces the risk of working at height during maintenance, but also significantly reduces manpower input, making maintenance work easy and efficient.

[0019] In this embodiment, the main control box is located adjacent to the pull box 1 on the side of the tunnel. The connection distance between the pull box 1 and the main control box is significantly shortened, the number of interfaces is drastically reduced, and the length of the air pipe used is reduced by nearly 100 meters compared to before the modification. This change fundamentally reduces the air door failure caused by air pipe leakage, providing a solid and reliable guarantee for tunnel passage. Furthermore, the simplification of the number of interfaces makes the hanging more standardized and orderly.

[0020] Two auxiliary switch control ropes 7 are arranged at regular intervals on the horizontal section of each main switch control rope 6. The two auxiliary switch control ropes 7 are located on both sides of the roadway 4, and reflective stickers are affixed to the auxiliary switch control ropes 7. The auxiliary switch control ropes 7 are neatly suspended on both sides of roadway 4 to ensure that the pipelines are horizontal and vertical, which is both aesthetically pleasing and practical.

[0021] This invention achieves efficient and stable operation of the damper without complicated operation or high cost, and has extremely high practical value.

[0022] It is understood that this utility model has been described through some embodiments, and those skilled in the art will recognize that various changes or equivalent substitutions can be made to these features and embodiments without departing from the spirit and scope of this utility model. Furthermore, under the teachings of this utility model, these features and embodiments can be modified to adapt to specific situations and materials without departing from the spirit and scope of this utility model. Therefore, this utility model is not limited to the specific embodiments disclosed herein, and all embodiments falling within the scope of the claims of this application are within the protection scope of this utility model.

Claims

1. A novel damper switching system, characterized in that, Includes a pull box (1), which is connected to a compressed air system (3) via an air pipe (2) to supply air to the air door. The pull box (1) is fixed upside down on one side of the roadway (4). Two fixed pulleys (5) are installed on the side of the roadway directly above the pull box (1) near the top plate. The switch control pull rope (6) of the pull box (1) extends upward and around the fixed pulleys (5) and then extends horizontally in opposite directions. The end of the switch control pull rope (6) is fixed on the opposite side of the roadway near the top plate. An auxiliary switch control pull rope (7) is fixedly connected to the horizontal section of the switch control pull rope (6). The lower end of the auxiliary switch control pull rope (7) hangs down to the top plate.

2. The novel damper switching system according to claim 1, characterized in that, Two auxiliary switch control ropes (7) are arranged at a certain distance on the horizontal section of each switch control rope (6), and the two auxiliary switch control ropes (7) are located on both sides of the roadway.

3. The novel damper switching system according to claim 1, characterized in that, The auxiliary switch control pull rope (7) has reflective stickers attached to it.

4. The novel damper switching system according to any one of claims 1 to 3, characterized in that, Includes the main control box, which is located on the side of the alley next to the pull box (1).

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