A -1050 m underground roadway air door

Abstract

The utility model discloses a kind of-1050m underground roadway air door, belong to mining engineering technical field. Including the installation frame being set along roadway two sides and top, the guide rail is equipped in installation frame two sides;Door body is equipped on guide rail, door body is slidably connected with guide rail, door body includes multiple air door grating connected in sequence;The top of installation frame is equipped with lifting mechanism, lifting mechanism includes brake motor, speed reducer, transmission shaft and traction chain;Brake motor is connected with controller, motor brake release power supply respectively, controller is connected with detection identification device, remote controller and control panel respectively, motor brake release power supply is connected with control panel, door body bottom edge is equipped with safety air bag, safety air bag connects pressure sensor, pressure sensor is connected with controller. The utility model realizes intelligent monitoring, reduces operator risk, improves transportation efficiency, and effectively reduces equipment occupied space, and the air door also has flame-retardant and wind-resistant characteristics.

Description

Technical Field

[0001] This utility model relates to the field of mining engineering technology, and in particular to a ventilation door for a -1050m underground roadway. Background Technology

[0002] Chentaigou Iron Mine is an extra-large sedimentary metamorphic iron mine with large reserves and good resource endowment. It is currently in the development and construction phase. During the mining process at a depth of -1050m, the design of the ventilation doors in the roadways is a crucial engineering aspect. With the successive completion of vertical shafts and horizontal roadways, ventilation doors are usually installed at relevant nodes to ensure the ventilation needs of the underground mine. However, for mines in Northeast China, winter ventilation must consider not only safe production but also the need for cold and frost protection. Therefore, in winter, to reduce the air intake of the auxiliary shaft, alleviate the pressure of icing at the shaft entrance, and reduce the energy consumption of electric heating at the shaft entrance, many ventilation doors need to be kept closed. Currently, underground ventilation doors are typically swing-type manual or automatic doors. Swing-type manual doors require manual opening when personnel or vehicles pass through. Especially when vehicles pass, the driver needs to get out of the vehicle to open the door to its maximum position and secure it. After the vehicle passes, the driver needs to get out again to close the door. This not only affects passage efficiency but also poses a risk of mechanical injury to personnel when the air pressure is high. However, not closing the ventilation door will affect underground ventilation and increase the risk of icing in the shaft. For example, [authorization notice number CN22227671] Chinese utility model patent No. 8U discloses a simple, modular adjustable airflow door for coal mines, which includes two opposing door panels. Automatic swing-type airflow doors require large roadway cross-sectional dimensions, and the installation of auxiliary equipment occupies roadway space, affecting vehicle passage. For example, Chinese utility model patent No. CN210948761U discloses an automatic control airflow door device for underground mining, which includes a door frame and two opposing door panels, the two door panels being hinged to the door frame. It also includes a drive mechanism, a counterweight mechanism, and a linkage mechanism. The drive mechanism includes a push rod and a traction rope. The push rod is used to pull the first door panel relative to the door frame to rotate and open via the traction rope. The drive mechanism also includes a first redirecting pulley that cooperates with the traction rope. The counterweight mechanism is used to pull the second door panel back to its original position and close. Specifically, the counterweight mechanism includes a counterweight block, a counterweight rope, a second redirecting pulley, and a third redirecting pulley. The second redirecting pulley is fixed relative to the door frame, and the third redirecting pulley is mounted on the second door leaf. The counterweight rope cooperates with both the second and third redirecting pulleys, with one end connected to the counterweight block and the other end connected to the second door leaf. Therefore, there is an urgent need for a new type of high-speed industrial ventilation door for underground mining that features a high degree of automation, low operational risk, and minimal space requirements, in order to improve underground passage efficiency and safety. Utility Model Content

[0003] This utility model provides a -1050m underground roadway air door that operates safely and stably, can realize automatic opening and closing and anti-pinch functions, reduces operational risks, and effectively reduces the space occupied by the equipment. Moreover, the air door also has flame-retardant and wind-resistant properties.

[0004] This utility model provides a -1050m underground roadway ventilation door, including an installation frame installed along both sides and the top of the roadway. Guide rails are provided on both sides of the installation frame, including vertical and horizontal rails. The horizontal rail is located above and perpendicular to the vertical rail. A door body is installed on the guide rails and slidably connected to them. The door body includes multiple sequentially connected ventilation door grilles. A lifting mechanism is provided at the top of the installation frame, including a brake motor, a reduction gear, a drive shaft, and a traction chain. The brake motor is driven by the reduction gear, which is driven by the drive shaft. The drive shaft is driven by the traction chain to the door body. The brake motor is connected to a controller and a motor brake release power supply. The controller is connected to a detection and identification device, a remote control, and a control panel. The motor brake release power supply is connected to the control panel. Two detection and identification devices are provided, one inside and one outside the door. A safety airbag is provided at the bottom edge of the door body, and a pressure sensor is connected to the airbag and the pressure sensor is connected to the controller.

[0005] Preferably, guide pulleys are provided at both ends of the damper grille, and the guide pulleys are slidably connected to the guide rail.

[0006] Preferably, two adjacent damper grilles are connected by a special hinge to form the door body.

[0007] Preferably, the damper grille comprises a hollow cast aluminum shell, the inner cavity of which is filled with flame-retardant and sound-insulating material.

[0008] Preferably, the special hinges are located on both sides of the damper grille along its length, and the two ends of the special hinges are respectively fixedly connected to two adjacent damper grilles by screws.

[0009] Preferably, sealing strips are connected to both sides of the damper grille at the bottom of the door.

[0010] Preferably, the lifting mechanism further includes two sprocket sets, which are spaced apart along the length of the gate body. There are two traction chains, and the two traction chains are arranged one-to-one with the two sprocket sets. Each sprocket set includes two sprockets spaced apart along the extension direction of the horizontal track. A traction chain is wound around the outside of the two sprockets. One sprocket is located at one end of the drive shaft, and the other sprocket is rotatably connected to the mounting frame. The gate body is installed on the outside of the two traction chains.

[0011] Preferably, the detection and identification device includes one or more of an infrared sensor, a radar sensor, and a geomagnetic sensor.

[0012] Preferably, the control panel surface is embedded with a display screen, an emergency stop button, a control button, and a brake unlock button. The control panel is equipped with a controller and a motor brake release power supply. The display screen, emergency stop button, and control button are electrically connected to the controller, and the brake unlock button is electrically connected to the motor brake release power supply.

[0013] Compared with the prior art, the beneficial effects of the -1050m underground roadway airlock provided by this utility model are as follows: 1. Through the rational design of the brake motor and chain actuator, the damper can be opened and adjusted up and down. Since there is no safety hazard to people and vehicles on both sides of the door when opening and closing, it can be opened and closed quickly.

[0014] 2. By setting up top horizontal and vertical tracks, the door can be raised and lowered along the guide tracks and stored at the top of the tunnel, thereby reducing the requirements of the door structure on the tunnel cross-sectional dimensions, reducing the space occupied by the equipment, effectively improving the tunnel passage environment, and increasing vehicle passability and maximum passage size.

[0015] 3. By incorporating airbags, an anti-crushing function can be achieved, effectively preventing vehicles or people from being pinched by the door.

[0016] 4. It can integrate multiple detection and identification devices, such as radar, infrared, and geomagnetic sensors, to accurately identify vehicles and people, achieve intelligent monitoring, improve the accuracy and reliability of air door control, and can also be operated manually, greatly reducing the workload of operators and improving underground transportation efficiency; at the same time, it avoids the risk of mechanical injury to personnel in the traditional manual air door operation process, and significantly improves work safety.

[0017] 5. Automatic, remote control, and manual control modes are available for dampers to meet different control needs. Attached Figure Description

[0018] To more clearly illustrate the technical solutions in the embodiments of this utility model, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0019] Figure 1 A structural schematic diagram of a -1050m underground roadway ventilation door provided by this utility model; Figure 2 A three-dimensional structural schematic diagram of a -1050m underground roadway air door provided by this utility model; Figure 3A schematic diagram of the lifting mechanism provided by this utility model; Figure 4 A schematic diagram of the structure of the damper grille provided by this utility model; Figure 5 A schematic diagram of the structure of the airbag provided by this utility model.

[0020] Figure label: 1. Mounting frame; 2. Guide rail; 21. Vertical rail; 22. Horizontal rail; 23. Curved rail; 3. Door body; 31. Air damper grille; 4. Lifting mechanism; 41. Brake motor; 42. Speed ​​reducer; 43. Drive shaft; 44. Traction chain; 45. Sprocket; 5. Control panel; 6. Safety airbag; 61. Airbag bracket; 7. Pressure sensor; 8. Special hinge; 9. Guide pulley; 10. Sealing strip. Detailed Implementation

[0021] In the following description, specific details such as particular system structures and techniques are set forth for illustrative purposes and not for limitation, in order to provide a thorough understanding of the embodiments of the present invention. However, those skilled in the art will understand that the present invention can be implemented in other embodiments without these specific details. In other instances, detailed descriptions of well-known systems, apparatuses, circuits, and methods are omitted so as not to obscure the description of the present invention with unnecessary detail.

[0022] Please see Figures 1 to 5 This invention provides a -1050m underground roadway ventilation door. The underground industrial high-speed ventilation door includes an installation frame 1 installed along both sides and the top of the roadway. Guide rails 2 are installed on both sides of the installation frame 1. The guide rails 2 include a vertical rail 21 and a horizontal rail 22. The turning points of the vertical and horizontal rails 21 are curved rails 23. The horizontal rail 22 is located above and perpendicular to the vertical rail 21. A door body 3 is installed on the guide rails 2 and is slidably connected to them. The door body 3 includes multiple sequentially connected ventilation door grilles 31. A lifting mechanism 4 is installed at the top of the installation frame 1. The lifting mechanism 4 includes a brake motor 41, a reduction gear 42, a transmission shaft 43, and... A traction chain 44, a brake motor 41, and a reduction gear 42 are connected in a transmission manner. The reduction gear is connected in a transmission manner to a drive shaft 43, which is connected to the door body 3 via the traction chain 44. The brake motor 41 is connected to a controller and a motor brake release power supply. The controller is connected to a detection and identification device, a remote control, and a control panel 5. The motor brake release power supply is connected to the control panel 5. Two detection and identification devices are installed, one inside and one outside the door. A safety airbag 6 is located at the bottom edge of the door body 3. The safety airbag 6 is connected to a pressure sensor 7, which is connected to the controller. Figure 4As shown, the lifting mechanism 4 in this embodiment also includes two sprocket sets, which are spaced apart along the length of the door body 3. There are two traction chains 44, which are arranged in a one-to-one correspondence with the two sprocket sets. Each sprocket set includes two sprockets 45 spaced apart along the extension direction of the horizontal track. The traction chains 44 are wound around the outer side of the two sprockets 45. One sprocket 45 is located at one end of the drive shaft 43, and the other sprocket 45 is rotatably connected to the mounting frame 1. The door body 3 is installed on the outer side of the two traction chains 44. The brake motor 41 and the reduction gear 42 are located at the end of the horizontal track 22 away from the vertical track 21 and are installed inside the mounting frame 1 to save space. The output shaft of the brake motor 41 is connected to the transmission shaft 43 through the reduction gear 42. The power of the brake motor 41 is first transmitted to the reduction gear 42 (e.g., a worm gear reducer), and after being reduced by the reduction gear 42, it is transmitted to the transmission shaft 43. The transmission shaft 43 drives the door body 3 to rise along the guide track 2 to the preset opening position through the sprocket set and the traction chain 44. At this time, the damper is open. When it is necessary to close the damper, the brake motor 41 rotates in the reverse direction, and the transmission shaft 43 drives the door body 3 to rise along the guide track 2 in the reverse direction through the sprocket set and the traction chain 44. The door descends to the preset closed position on track 2. The brake motor 41 has an automatic braking function in case of power failure, which can achieve rapid stopping to prevent the door from falling. The motor brake release power supply is used to supply power to the brake motor 41 in case of power failure, so as to unlock the output shaft of the brake motor 41. When the door 3 is lifted or pulled down manually, it can drive the output shaft of the brake motor 41 to rotate, so that the door can be opened or closed smoothly. The control panel 5 is equipped with a display screen, an emergency stop button, a control button and a brake unlock button. The control panel is equipped with a controller and a motor brake release power supply. The display screen, emergency stop button and control button are electrically connected to the controller, and the brake unlock button is electrically connected to the motor brake release power supply. The display screen shows the working mode, operating status, parameter settings, and fault information in real time. Control buttons include open, close, and stop buttons for controlling the opening and closing of the damper. An emergency stop button quickly cuts off power in emergencies to protect personnel and machinery. The controller has a circuit board electrically connected to the display screen, emergency stop button, control buttons, and remote control, allowing remote control of the damper's opening and closing. A brake unlock button releases power to the brake motor 41 in case of power failure. Specifically, pressing the brake unlock button during a power outage releases power to the brake motor 41, allowing the door 3 to be raised or lowered manually. After opening or closing the damper, pressing the brake unlock button again stops power supply to the brake motor 41. Two detection and identification devices are installed on the inner and outer sides of the damper. These devices detect the approach or departure of personnel or vehicles. By using these devices, the controller can automatically control the damper's rise and fall, eliminating the need for manual opening or closing and effectively improving passage efficiency.The detection and identification device includes one or more of infrared sensors, radar sensors, or geomagnetic sensors. The device can use only one type of sensor, or multiple sensors can be used for multi-sensor identification to ensure accuracy and reliability of control.

[0023] Specifically, such as Figure 2 As shown, the mounting frame 1 is inverted L-shaped and is used for installation on the top and sidewalls of the tunnel. Two guide rails 2 are provided, both inverted L-shaped, spaced apart on opposite sides of the mounting frame 1. The curved track 23 at the connection between the vertical track 21 and the horizontal track 22 of the guide rail 2 is arc-shaped. A door 3 is provided between the two guide rails 2. The width of the door 3 is the same as the width of the two guide rails 2 and extends into the grooves of the guide rails 2 to ensure that the door can move within the two guide rails 2. The door 3 includes multiple damper grilles 31, which are connected sequentially along the lifting direction. Adjacent damper grilles 31 are connected by a special hinge 8. Specifically, the special hinges 8 are located on both sides of the length of the damper grille 31. The two ends of the special hinges 8 are respectively fixed to two adjacent damper grilles 31 by screws, making the door body 3 structurally robust and durable with good windproof performance. For example... Figure 5 As shown, guide pulleys 9 are respectively provided at both ends of the damper grille 31. The guide pulleys 9 are slidably connected to the guide rail 2. The guide pulleys 9 are located in the groove of the guide rail 2, and the axis of the guide pulleys 9 extends along the width direction of the damper grille 31, allowing them to roll within the groove of the guide rail 2, so that the door 3 can move along the guide rail 2. The size of the groove of the guide rail 2 is adapted to the size of the guide pulleys 9 to prevent the damper grille 31 from deflecting during movement. The damper grille 31 includes a hollow cast aluminum shell, and the inner cavity of the shell is filled with flame-retardant and sound-insulating material. Since the damper grille 31 is made of hollow cast aluminum, the weight of the door can be effectively reduced. At the same time, the interior of the damper grille 31 is filled with flame-retardant and sound-insulating lightweight fillers such as polyurethane or polystyrene, which not only improves the flame-retardant performance of the door and makes it safer to use, but also absorbs and isolates external noise and improves the wind resistance of the door 3, which can withstand wind pressure of level 12. Both sides of the damper grille 31 at the bottom of the door body 3 are connected with sealing strips 10 to ensure that the inside and outside sides of the damper can fit tightly against the bottom of the roadway when the door body 3 is closed, so as to prevent air leakage from the damper.

[0024] like Figure 5 As shown, in this embodiment, the underground roadway ventilation door also includes a safety airbag 6 and a pressure sensor 7. The safety airbag 6 is located at the bottom edge of the door body 3. The safety airbag 6 is connected to the pressure sensor 7, and the pressure sensor 7 is connected to the controller to realize the function of preventing squeezing.

[0025] Specifically, an airbag bracket 61 is installed at the bottom of the door body 3, and the airbag bracket 61 is located between two sealing strips. The airbag bracket 61 has a receiving groove to accommodate the safety airbag 6. The safety airbag 6 and the pressure sensor 7 are both set in the receiving groove. The pressure sensor 7 is a tire pressure sensor, which is set inside the safety airbag 6. During the descent of the door body 3, if it comes into contact with a foreign object (such as a person or vehicle), the safety airbag 6 will be pressurized, causing its internal pressure to increase. At this time, the controller receives the signal from the pressure sensor 7, thereby controlling the door body 3 to stop descending or move upward to the highest opening position, which can prevent vehicles or people from being trapped by the door.

[0026] The working principle of the -1050m underground roadway airlock provided by this utility model is as follows: When the airlock needs to be opened, the controller starts the brake motor 41 to rotate forward. The rotation of the transmission shaft 43 and the sprocket set drives the traction chain 44 to rotate, thereby driving the airlock gate plate 31 to move upward along the vertical track 21 until it reaches the end of the horizontal track 22, completing the lifting of the gate body 3. When the airlock needs to be closed, the controller starts the brake motor 41 to rotate in reverse. The rotation of the transmission shaft 43 and the sprocket set drives the traction chain 44 to rotate, thereby driving the airlock gate plate 31 to move downward along the horizontal track 22 until it reaches the end of the vertical track 21, completing the lowering of the gate body 3. When the airlock power is cut off, pressing the brake unlock button on the control panel 5 releases the motor brake power supply to the brake motor 41. At this time, the airlock can be opened or closed by manually lifting or pulling the gate body 3. Pressing the brake unlock button again stops the motor brake power supply to the brake motor 41, and the brake motor 41 is in a braking state. The airlock cannot be lifted or pulled down manually.

[0027] The above-described embodiments are only used to illustrate the technical solutions of this utility model, and are not intended to limit it. Although this utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some of the technical features. Such modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the spirit and scope of the technical solutions of the embodiments of this utility model, and should all be included within the protection scope of this utility model.

Claims

1. A ventilation door for a -1050m underground roadway, characterized in that, The system includes an installation frame installed along both sides and top of the tunnel. Guide rails are installed on both sides of the installation frame. The guide rails include vertical rails and horizontal rails. The vertical rails and horizontal rails are curved at the turns. The horizontal rails are located above the vertical rails and are perpendicular to the vertical rails. A door body is provided on the guide rail, and the door body is slidably connected to the guide rail. The door body includes a plurality of damper grilles connected in sequence. The top of the mounting frame is provided with a lifting mechanism, which includes a brake motor, a reduction gear, a drive shaft and a traction chain. The brake motor is driven by the reduction gear, the reduction gear is driven by the drive shaft, and the drive shaft is driven by the door body through the traction chain. The brake motor is connected to the controller and the motor brake release power supply respectively. The controller is connected to the detection and identification device, the remote controller and the control panel respectively. The motor brake release power supply is connected to the control panel. The detection and identification device consists of two devices, which are respectively installed on the inner and outer sides of the damper. The bottom edge of the door is equipped with a safety airbag, which is connected to a pressure sensor, and the pressure sensor is connected to the controller.

2. The -1050m underground roadway ventilation door according to claim 1, characterized in that, The damper grille is provided with guide pulleys at both ends, and the guide pulleys are slidably connected to the guide rail.

3. The -1050m underground roadway ventilation door according to claim 1, characterized in that, The two adjacent damper grilles are connected by a special hinge to form the door body.

4. The -1050m underground roadway ventilation door according to claim 3, characterized in that, The special hinges are located on both sides of the damper grille along its length, and the two ends of the special hinges are respectively fixedly connected to the two adjacent damper grilles by screws.

5. The -1050m underground roadway ventilation door according to claim 1, characterized in that, The damper grille includes a hollow cast aluminum shell, the inner cavity of which is filled with flame-retardant and sound-insulating material.

6. The -1050m underground roadway ventilation door according to claim 1, characterized in that, Both sides of the damper grille at the bottom of the door are connected with sealing strips.

7. The -1050m underground roadway ventilation door according to claim 1, characterized in that, The lifting mechanism further includes two sprocket sets, which are spaced apart along the length of the door body. There are two traction chains, which are arranged in a one-to-one correspondence with the two sprocket sets. Each sprocket set includes two sprockets spaced apart along the extension direction of the horizontal track. The traction chains are wound around the outer sides of the two sprockets. One sprocket is located at one end of the drive shaft, and the other sprocket is rotatably connected to the mounting frame. The door body is mounted on the outer side of the two traction chains.

8. The -1050m underground roadway ventilation door according to claim 1, characterized in that, The detection and identification device includes one or more of infrared sensors, radar sensors, and geomagnetic sensors.

9. The -1050m underground roadway ventilation door according to claim 1, characterized in that, The control panel is equipped with a display screen, an emergency stop button, control buttons, and a brake unlock button. The control panel contains a controller and a motor brake release power supply. The display screen, the emergency stop button, and the control buttons are electrically connected to the controller, and the brake unlock button is electrically connected to the motor brake release power supply.

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