Self-adaptive sealing air door for underground mine roadway and using method of self-adaptive sealing air door

Abstract

The invention relates to the technical field of underground mine ventilation, in particular to an underground mine roadway self-adaptive sealing air door and a using method thereof. The underground mine roadway self-adaptive sealing air door comprises an air door assembly, a hydraulic transmission mechanism and a plurality of elastic sealing assemblies; the air door assembly comprises an air door body, a door frame and a hydraulic connecting rod, the two ends of the hydraulic connecting rod are fixedly connected with the air door body and the door frame correspondingly, and the hydraulic transmission mechanism is connected with the hydraulic connecting rod and used for driving the hydraulic connecting rod to stretch out and draw back. The elastic sealing assemblies are arranged below the air door body in an array mode and connected with the air door body in a sliding mode. The elastic sealing pieces are arranged at the bottom of the air door body in an array mode, so that the height of the bottom of the air door body can be adjusted in real time according to roadway ground fluctuation in the rotating process of the air door body, and the elastic sealing pieces independently respond to local terrain changes; the problem of air leakage caused by gaps at the bottom of the air door body can be effectively solved, and durability and application range of the device are remarkably improved.

Description

Technical Field

[0001] The present invention relates to the technical field of underground mine ventilation, and particularly to an underground mine roadway adaptive sealing air door and a using method thereof. Background Art

[0002] The air door in a mine is a key structure for regulating the air volume underground, reducing ineffective air leakage, maintaining the stability of the ventilation system, and ensuring the safe production of the mine. However, in actual applications, traditional air door devices have problems with poor sealing effects. Specifically, due to the uneven construction of mine roadways, there is often a spatial distance of 10 - 20 cm between the bottom of traditional air doors and the roadway floor, which makes it impossible for the air doors to achieve effective sealing. A large amount of air flow passes through the bottom, resulting in serious air leakage. To solve this problem, existing underground mine air doors usually adopt the method of installing rubber strips to reduce bottom air leakage, but the sealing effect only through rubber strips is not ideal, and it is prone to breakage due to wear, aging, etc. after long-term use, and cannot fundamentally solve the problem of bottom air leakage of the air door, seriously affecting the efficiency and stability of the mine ventilation system.

[0003] In view of this, overcoming the defects of the existing technology is an urgent problem to be solved in this technical field. Summary of the Invention

[0004] The technical problem to be solved by the present invention is that the existing mine air doors have poor sealing effects through rubber strips and are not conducive to long-term use.

[0005] The present invention adopts the following technical solutions: In a first aspect, the present invention provides an underground mine roadway adaptive sealing air door, including: an air door assembly 1, a hydraulic transmission mechanism 2, and a plurality of elastic sealing components 3; The air door assembly 1 includes an air door body 10, a door frame 11, and a hydraulic connecting rod 12. The two ends of the hydraulic connecting rod 12 are respectively fixedly connected to the air door body 10 and the door frame 11. The hydraulic transmission mechanism 2 is connected to the hydraulic connecting rod 12 through a pipeline, and the hydraulic transmission mechanism 2 is used to drive the hydraulic connecting rod 12 to expand and contract; A plurality of the elastic sealing components 3 are arranged in an array below the air door body 10, and the elastic sealing components 3 are slidably connected to the air door body 10.

[0006] Preferably, the elastic sealing component 3 includes a mounting seat 30. The mounting seat 30 includes a main body portion 300 and mounting plates 301 arranged on both sides of the main body portion 300. The main body portion 300 is slidably connected to the air door body 10. The mounting plates 301 are symmetrically arranged on both sides of the main body portion 300, and the mounting plates 301 are fixedly connected to the main body portion 300; At least two linear slider bearings 100 are fixedly arranged below the damper body 10, and at least two of the linear slider bearings 100 are symmetrically arranged on both sides of the damper body 10; The elastic sealing assembly 3 further includes two sliding rods 31, and the two sliding rods 31 are respectively fixedly installed on the mounting plates 301 on both sides of the main body portion 300, and the sliding rods 31 are slidably connected to the linear slider bearings 100.

[0007] Preferably, a first limiting unit 310 and a second limiting unit 311 are arranged on the sliding rod 31, the first limiting unit 310 is located at the top of the sliding rod 31, and the second limiting unit 311 is located in the middle of the sliding rod 31; A spring 312 is sleeved on the sliding rod 31. When two of the linear slider bearings 100 are respectively arranged on both sides of the damper body 10, the linear slider bearings 100 include a first bearing 1000 and a second bearing 1001. The first bearing 1000 is located between the first limiting unit 310 and the second limiting unit 311, the second bearing 1001 is located between the second limiting unit 311 and the mounting plate 301, and the spring 312 is located between the second limiting unit 311 and the first bearing 1000.

[0008] Preferably, a first installation notch 101 is arranged at the lower end of the damper body 10, the main body portion 300 is coupled with the first installation notch 101, and the main body portion 300 is slidably connected to the first installation notch 101.

[0009] Preferably, a pulley 302 is arranged at the bottom of the main body portion 300, and the pulley 302 is fixedly connected to the main body portion 300.

[0010] Preferably, sealing members 303 are arranged on both sides of the mounting seat 30, and the plane where the sealing members 303 are located is perpendicular to the plane where the mounting plates 301 are located; a sealing protrusion 3030 is arranged at the bottom of the sealing member 303, the sealing protrusion 3030 faces the pulley 302, and the sealing protrusion 3030 is used to bridge the gap between the pulley 302 and the side surface of the mounting seat 30.

[0011] Preferably, a mounting protrusion 110 is arranged on the door frame 11, one end of the hydraulic connecting rod 12 is fixedly connected to the mounting protrusion 110, and the other end is fixedly connected to the damper body 10.

[0012] Preferably, the hydraulic transmission mechanism 2 includes a hydraulic pump 20, a control valve group 21 and a control module 22. The hydraulic pump 20 and the control valve group 21 are connected by a pipeline. The hydraulic pump 20 outputs pressurized hydraulic oil to the control valve group 21. The control valve group 21 is connected to the hydraulic connecting rod 12 by a pipeline. The control module 22 is electrically connected to the hydraulic pump 20 and the control valve group 21. The control module 22 is used to control the start and stop of the hydraulic pump 20 and the parameters of the control valve group 21.

[0013] Preferably, a protective box 102 is provided below the air door body 10. The protective boxes 102 are symmetrically arranged on both sides of the air door body 10. The protective box 102 shields the outside of the elastic sealing assembly 3.

[0014] In a second aspect, based on the first aspect, the present invention provides a method for using an adaptive sealing air door for an underground mine roadway, which is applicable to the adaptive sealing air door for an underground mine roadway described in the first aspect, including: Start the hydraulic transmission mechanism 2, and the hydraulic transmission mechanism 2 drives the hydraulic connecting rod 12 to expand and contract; The hydraulic connecting rod 12 drives the air door body 10 to rotate; When the elastic sealing assembly 3 encounters a ground protrusion, it is compressed, and when it encounters a ground depression, it extends.

[0015] Compared with the prior art, the beneficial effects of the present invention are as follows: In the first aspect, by arranging the elastic sealing assemblies 3 in an array at the bottom of the air door body 10, during the rotation of the air door body 10, its bottom can adjust the height in real time according to the undulation of the roadway ground (such as pits or gravel). The elastic sealing assemblies 3 independently respond to local terrain changes. Compared with the traditional rubber strip sealing method, it can effectively solve the air leakage problem caused by the gap at the bottom of the air door body 10, and significantly improve the durability and application range of the device.

[0016] In the second aspect, by setting the hydraulic transmission mechanism 2 to drive the hydraulic connecting rod 12 to expand and contract, it can overcome the self-weight of the door body and terrain resistance, realize the electric control opening and closing of the air door body 10, which is beneficial to reducing labor costs and has both safety and economy. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings required to be used in the embodiments of the present invention will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For those of ordinary skill in the art, other drawings can be obtained based on these drawings without creative efforts.

[0018] Figure 1It is a schematic diagram of the overall structure of an adaptive sealing air door for an underground mine roadway provided by an embodiment of the present invention; Figure 2 It is a schematic diagram of a protective box of an adaptive sealing air door for an underground mine roadway provided by an embodiment of the present invention; Figure 3 It is a schematic diagram of a hydraulic transmission mechanism of an adaptive sealing air door for an underground mine roadway provided by an embodiment of the present invention; Figure 4 It is a schematic diagram of an elastic sealing assembly of an adaptive sealing air door for an underground mine roadway provided by an embodiment of the present invention; Figure 5 It is a schematic diagram of a linear slider bearing installed on an air door body of an adaptive sealing air door for an underground mine roadway provided by an embodiment of the present invention; Figure 6 It is a schematic diagram of a spring being compressed in an adaptive sealing air door for an underground mine roadway provided by an embodiment of the present invention; Figure 7 It is a schematic diagram of a first installation notch and an installation seat being coupled in an adaptive sealing air door for an underground mine roadway provided by an embodiment of the present invention; Figure 8 It is a schematic diagram of a pulley of an adaptive sealing air door for an underground mine roadway provided by an embodiment of the present invention; Figure 9 It is a schematic diagram of a seal of an adaptive sealing air door for an underground mine roadway provided by an embodiment of the present invention; Figure 10 It is a schematic flow diagram of a usage method of an adaptive sealing air door for an underground mine roadway provided by an embodiment of the present invention; Figure 11 It is a schematic diagram of three states of an elastic sealing assembly of an adaptive sealing air door for an underground mine roadway provided by an embodiment of the present invention.

[0019] Among them, the reference numerals are: 1 - air door assembly, 10 - air door body, 100 - linear slider bearing, 1000 - first bearing, 1001 - and second bearing, 101 - first installation notch, 102 - protective box, 11 - door frame, 110 - installation protrusion, 12 - hydraulic connecting rod, 2 - hydraulic transmission mechanism, 20 - hydraulic pump, 21 - control valve group, 22 - control module, 3 - elastic sealing assembly, 30 - installation seat, 300 - main body part, 301 - installation plate, 302 - pulley, 303 - seal, 3030 - sealing protrusion, 31 - sliding rod, 310 - first limiting unit, 311 - second limiting unit, 312 - spring. Detailed implementation manners

[0020] In order to make the objectives, technical solutions and advantages of the present invention more clear and understandable, the present invention will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present invention and are not used to limit the present invention.

[0021] Unless the context requires otherwise, throughout the specification and claims, the term "comprising" is to be construed in an open, inclusive sense, i.e., "including, but not limited to". In the description of the specification, the terms "one embodiment", "some embodiments", "exemplary embodiments", "examples", "specific examples", or "some examples", etc. are intended to indicate that a specific feature, structure, material, or characteristic related to the embodiment or example is included in at least one embodiment or example of the present disclosure. The schematic representations of the above terms are not necessarily referring to the same embodiment or example. In addition, the specific features, structures, materials, or characteristics may be included in any one or more embodiments or examples in any appropriate manner, that is, although they may be carried in the above-mentioned embodiments or examples due to reasons such as the order and position of appearance, they are not limited to being carried by one embodiment or example in a combined manner.

[0022] In the description of the present invention, it should be understood that the orientation or positional relationships indicated by the terms "center", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc. are based on the orientation or positional relationships shown in the drawings, and are only for the convenience of describing the present disclosure and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus should not be construed as a limitation to the present disclosure.

[0023] In the description of the present invention, the terms "first" and "second" are only used for descriptive purposes and cannot be construed as indicating or implying relative importance or implicitly specifying the quantity of the indicated technical features. Thus, the features defined with "first" and "second" may explicitly or implicitly include one or more of such features. In the description of the embodiments of the present disclosure, unless otherwise stated, the meaning of "a plurality" is two or more. In addition, for example, in the description, for the same type of nouns, the method of adding "A" and "B" at the end is used to describe them as two independent individuals. In this case, the features defined with "A" and "B" are only used for the purpose of distinguishing the same type of individuals and cannot be construed as indicating or implying relative importance or implicitly specifying the quantity of the indicated technical features.

[0024] In the description of some embodiments, the expressions "coupled", "coupling", and "connected" and their derivatives may be used. For example, in the description of some embodiments, the term "connected" may be used to indicate that two or more components have direct physical contact or electrical contact with each other. Another example is that in the description of some embodiments, the term "coupled" may be used to indicate that two or more components have direct physical contact or electrical contact. However, the term "connected" or "coupled" may also mean that two or more components do not have direct contact with each other, but still cooperate or interact with each other, such as "optical path coupling", "wireless connection", etc. The embodiments disclosed herein are not necessarily limited to the content of the present invention.

[0025] In the description of the present invention, the expression "A and / or B" (where A and B are used to formally represent specific feature contents) is involved, and the corresponding expression includes the following three combinations: only A, only B, and the combination of A and B.

[0026] As used in the present invention, "about", "substantially", or "approximately" includes the stated value and the average value within an acceptable deviation range of the specific value, where the acceptable deviation range is determined by those of ordinary skill in the art considering the measurement being discussed and the errors associated with the measurement of a particular quantity (i.e., the limitations of the measurement system).

[0027] In addition, the technical features involved in the various embodiments of the present invention described below can be combined with each other as long as they do not conflict with each other.

[0028] Embodiment 1: Embodiment 1 of the present invention provides an underground mine roadway adaptive sealing air door, as Figure 1 shown, including: an air door assembly 1, a hydraulic transmission mechanism 2, and a plurality of elastic sealing components 3; the air door assembly 1 includes an air door body 10, a door frame 11, and a hydraulic connecting rod 12. The two ends of the hydraulic connecting rod 12 are respectively fixedly connected to the air door body 10 and the door frame 11. The hydraulic transmission mechanism 2 is connected to the hydraulic connecting rod 12 through a pipeline. The hydraulic transmission mechanism 2 is used to drive the hydraulic connecting rod 12 to expand and contract; a plurality of the elastic sealing components 3 are arranged in an array below the air door body 10, and the elastic sealing components 3 are slidably connected to the air door body 10. Among them, the air door body 10 and the door frame 11 are hinged.

[0029] In one embodiment, a plurality of elastic sealing components 3 are arranged along the width direction of the air door body 10. The plurality of elastic sealing components 3 are independent of each other, and each elastic sealing component 3 independently responds to local terrain changes. In an actual application scenario, since there is a lot of dust in the mine, in order to prevent the elastic sealing component 3 from having a shorter up and down movement stroke due to excessive dust accumulation on its surface during long-term use, therefore, asFigure 2 As shown, a protective box 102 is provided below the damper body 10. The protective boxes 102 are symmetrically arranged on both sides of the damper body 10, and the protective boxes 102 are arranged to cover the outside of the elastic sealing assembly 3.

[0030] Among them, the damper assembly 1 further includes door handles, which are respectively arranged on both sides of the damper body 10, so as to prevent the damper body 10 from being manually opened and closed through the door handles in case of a failure of the hydraulic transmission mechanism 2; an installation protrusion 110 is provided on the door frame 11, and one end of the hydraulic connecting rod 12 is fixedly connected to the installation protrusion 110, and the other end is fixedly connected to the damper body 10.

[0031] In order to meet the requirements of modern mine automation management, the hydraulic transmission mechanism 2 can realize remote control and status monitoring of the control system. The specific method can be, for example Figure 3 As shown, the hydraulic transmission mechanism 2 includes a hydraulic pump 20, a control valve group 21 and a control module 22. The hydraulic pump 20 and the control valve group 21 are connected by pipelines. The hydraulic pump 20 outputs pressurized hydraulic oil to the control valve group 21. The control valve group 21 is connected to the hydraulic connecting rod 12 by a pipeline (not shown in the figure). The control module 22 is electrically connected to the hydraulic pump 20 and the control valve group 21. The control module 22 is used to control the start and stop of the hydraulic pump 20 and the parameters of the control valve group 21.

[0032] In one embodiment, the power transmission path of the hydraulic drive mechanism 2 can be as follows: the hydraulic pump 20 sucks in and pressurizes hydraulic oil from the fuel tank through mechanical drive (such as an electric motor), and outputs the pressurized hydraulic oil to the control valve group 21. The control valve group 21 receives electrical signals from the control module 22 through internally integrated components such as direction valves, pressure valves, and flow valves, and precisely adjusts parameters such as the direction of the oil (such as the reversing valve controls the telescopic movement of the hydraulic link 12), pressure (such as the relief valve limits the maximum system pressure), and flow rate (such as the throttle valve adjusts the movement speed of the link); among them, the direction valve includes an oil inlet, an oil outlet, and a working oil port, and these oil ports are respectively connected to the hydraulic pump 20, the hydraulic link 12, and the fuel tank through pipelines; the oil inlet of the pressure valve is connected to the outlet of the hydraulic pump 20 through a pipeline, and the oil outlet is connected to the fuel tank through a pipeline; the flow valve is connected in series on the oil supply pipeline of the hydraulic link 12, and controls the flow rate of the hydraulic oil passing through the valve port by adjusting the opening of the valve port. The oil supply pipeline of the hydraulic link 12 is the pipeline through which the entire control valve group 21 is connected to the hydraulic link 12. The control module 22 can directly drive the electromagnets of the direction valve, the pressure valve, and the flow valve through digital signal lines to control the flow rate and flow velocity of the hydraulic oil entering the direction valve, pressure valve, and flow valve; the hydraulic link 12 converts hydraulic energy into mechanical energy to push the damper body 10 to complete the opening and closing actions. The main structure of the hydraulic link 12 includes a pressure cylinder and a piston rod, and the piston rod is slidably connected to the pressure cylinder. The movement speed and displacement of the piston rod are determined by the flow rate adjustment and direction control of the control valve group 21. In an actual application scenario, the operating relationship among the hydraulic pump 20, the control valve group 21, the control module 22, and the hydraulic link 12 can be as follows: the operator sends an "open the damper" command through the human-machine interface, the control module 22 calculates the required hydraulic cylinder stroke, outputs a signal to the control valve group 21, the control valve group 21 switches the oil circuit direction and adjusts the flow rate, the hydraulic pump 20 provides a stable pressure, the piston rod of the hydraulic link 12 extends, and the position is real-time fed back through a sensor. After reaching the target position, the control module 22 cuts off the valve group signal, and the system maintains pressure and standby.

[0033] In the first aspect, by arranging the elastic sealing components 3 in an array at the bottom of the damper body 10, during the rotation of the damper body 10, its bottom can adjust the height in real time according to the undulations of the roadway ground (such as pits or gravel). The elastic sealing components 3 independently respond to local terrain changes. Compared with the traditional rubber strip sealing method, it can effectively solve the air leakage problem caused by the gap at the bottom of the damper body 10, and significantly improve the durability and application range of the device.

[0034] In the second aspect, by setting the hydraulic drive mechanism 2 to drive the hydraulic link 12 to expand and contract, it can overcome the self-weight of the door body and terrain resistance, realize the electric control opening and closing of the damper body 10, which is beneficial to reducing labor costs and has both safety and economy.

[0035] To fully elaborate on the technical solutions provided by the embodiments of the present invention, the structures provided in the above solutions will be further elaborated in detail below.

[0036] In the above solution, it is mentioned that a plurality of the elastic sealing components 3 are arranged in an array below the damper body 10, and the elastic sealing components 3 are slidably connected to the damper body 10. The specific manner includes, for example Figure 4 and Figure 5 As shown, the elastic sealing component 3 includes a mounting seat 30. The mounting seat 30 includes a main body portion 300 and mounting plates 301 provided on both sides of the main body portion 300. The main body portion 300 is slidably connected to the damper body 10. The mounting plates 301 are symmetrically arranged on both sides of the main body portion 300, and the mounting plates 301 are fixedly connected to the main body portion 300. In order to realize the sliding connection function between the elastic sealing component 3 and the damper body 10, at least two linear slide bearings 100 are fixedly provided below the damper body 10, and at least two of the linear slide bearings 100 are symmetrically arranged on both sides of the damper body 10. The elastic sealing component 3 further includes two sliding rods 31, and the two sliding rods 31 are respectively fixedly installed on the mounting plates 301 on both sides of the main body portion 300, and the sliding rods 31 are slidably connected to the linear slide bearings 100. Considering the sliding stability between the sliding rod 31 and the linear slide bearing 100, in a preferred solution, two linear slide bearings 100 are respectively arranged on both sides of the damper body 10, and each sliding rod 31 is slidably connected to two linear slide bearings 100. In actual application scenarios, the number of linear slide bearings 100 can be set according to the length of the sliding rod 31 and the characteristics of the use environment.

[0037] During the overall sliding process of the elastic sealing component 3, it is necessary to limit the extreme positions of the elastic sealing component 3 relative to the damper body 10 during sliding to prevent the elastic sealing component 3 from disengaging from the linear slide bearings 100 during the sliding process and thus separating from the damper body 10. The specific manner can be, refer to Figure 4As shown, a first limiting unit 310 and a second limiting unit 311 are provided on the sliding rod 31. The first limiting unit 310 is located at the top of the sliding rod 31, and the second limiting unit 311 is located in the middle of the sliding rod 31. Among them, the first limiting unit 310 and the second limiting unit 311 are symmetrically convex on both sides of the sliding rod 31 in the overall appearance to limit the extreme positions of the downward or upward movement of the sliding rod 31. In the actual processing technology, the first limiting unit 310 and the second limiting unit 311 can be welded to the body of the sliding rod 31, or integrally formed by die casting; or through holes are opened on the body of the sliding rod 31, and another rod is inserted into the through holes so that the distances of both sides protruding from the body of the sliding rod 31 are the same, and then the rod is fixed.

[0038] Based on the above-mentioned sliding structure for realizing the elastic sealing component 3, during the rotation of the damper body 10, in order to ensure the sealing effect at the bottom of the damper body 10, as Figure 5 As shown, a spring 312 is sleeved on the sliding rod 31. When two linear slider bearings 100 are respectively arranged on both sides of the damper body 10, the linear slider bearing 100 includes a first bearing 1000 and a second bearing 1001. The first bearing 1000 is located between the first limiting unit 310 and the second limiting unit 311, and the second bearing 1001 is located between the second limiting unit 311 and the mounting plate 301. The spring 312 is located between the second limiting unit 311 and the first bearing 1000. Among them, the spring 312 is in a pre-compressed state to cope with the depression of the ground. By arranging the spring 312 between the second limiting unit 311 and the linear slider bearing 100, the bottom of the elastic sealing component 3 can be in close contact with the ground in the face of various ground conditions, adapting to various road conditions. Figure 5 It is a schematic diagram of the state of the spring 312 when the ground is flat. Figure 6 It is a schematic diagram of the state where when there is a protrusion on the ground, the sliding rod 31 moves upward and the second limiting unit 311 moves upward to squeeze the spring 312.

[0039] For the mounting seat 30, in the conventional solution, the mounting seat 30 can be of a plate structure, which can realize the function of mounting the sliding rod 31. However, if the mounting seat 30 is of a plate structure, there will be a gap between the upper surface of the mounting seat 30 and the damper body 10 during the descent of the elastic sealing component 3. Therefore, in order to ensure the overall sealing of the damper assembly 1, in the preferred solution, as Figure 7As shown, a first installation notch 101 is provided at the lower end of the air dam body 10. The main body portion 300 is coupled with the first installation notch 101, and the main body portion 300 is slidably connected to the first installation notch 101. By coupling the main body portion 300 and the first installation notch 101, the gap between the mounting base 30 and the air dam body 10 when the mounting base 30 descends can be filled.

[0040] Secondly, during the movement of the air dam body 10 and the elastic sealing assembly 3, since there may be sand, gravel, or pits on the ground, if the bottom of the elastic sealing assembly 3 is flat, the friction between it and the ground is too large, which is not conducive to long-term use. Therefore, in order to improve the smoothness of the elastic sealing assembly 3 during movement on the ground and the stability of the elastic sealing assembly 3 during long-term use, as Figure 8 shown, a pulley 302 is provided at the bottom of the main body portion 300, and the pulley 302 is fixedly connected to the main body portion 300. Specifically, the pulley 302 can be fixedly connected to the main body portion 300 through a pulley seat.

[0041] When multiple elastic sealing assemblies 3 are installed on the air dam body 10, since a pulley 302 is provided at the bottom thereof and the width of the pulley 302 is smaller than the width of the mounting base 30, there is a certain gap between adjacent pulleys 302 under normal circumstances, which affects the sealing performance at the bottom of the air dam assembly 1. Therefore, as Figure 9 shown, sealing members 303 are provided on both sides of the mounting base 30, and the plane where the sealing members 303 are located is perpendicular to the plane where the mounting plate 301 is located; a sealing protrusion 3030 is provided at the bottom of the sealing member 303, and the sealing protrusion 3030 faces the pulley 302 and is used to bridge the gap between the pulley 302 and the side surface of the mounting base 30. Among them, the sealing member 303 can be a sealing rubber strip or a steel plate or other structural members that can achieve a sealing effect. In a preferred solution, if the sealing member 303 is a sealing rubber strip, based on its elastic property, when encountering a sandy ground, the sealing rubber strip can also seal the irregular contact surface caused by sand and stones.

[0042] Through the design of the first installation notch 101 and the main body portion 300 and the design of the sealing members 303 provided on both sides of the mounting base 30 in the above structure, the sealing effect of the elastic sealing assembly 3 is further improved, and the air leakage rate is reduced by more than 90% compared with the traditional rubber strip sealing, ensuring the high efficiency and stability of the ventilation system.

[0043] In the embodiment of the present invention, a segmented movable bottom design with a large number of telescopic springs is adopted. This design enables the air door to automatically expand and contract and close when a certain part of the bottom encounters an obstacle or a gap during the opening and closing process. On the one hand, when the air door is closed, no matter how uneven the roadway ground is, it can always maintain a sealed state without air leakage. On the other hand, when the air door opens and closes, it can easily cross the ground obstacles, avoiding difficulties in opening and closing caused by ground conditions.

[0044] In summary, based on the above structure, the embodiment of the present invention further provides a method for using an adaptive sealing air door in an underground mine roadway, which is applicable to the adaptive sealing air door in the underground mine roadway described in the above solution, as Figure 10 shown, including: In step S1, start the hydraulic transmission mechanism 2, and the hydraulic transmission mechanism 2 drives the hydraulic connecting rod 12 to expand and contract.

[0045] Specifically, the hydraulic pump 20 sucks and pressurizes the hydraulic oil from the fuel tank through mechanical drive, and outputs the pressurized hydraulic oil to the control valve group 21. The control valve group 21 receives the electrical signal from the control module 22 through components such as direction valves, pressure valves, and flow valves integrated inside, and precisely adjusts parameters such as the direction, pressure, and flow rate of the oil; the hydraulic connecting rod 12 converts hydraulic energy into mechanical energy to drive the air door body 10 to complete the opening and closing actions. In step S2, the hydraulic connecting rod 12 drives the air door body 10 to rotate.

[0046] Among them, the movement speed and displacement of the piston rod of the hydraulic connecting rod 12 are determined by the flow rate adjustment and direction control of the control valve group 21.

[0047] In step S3, when the elastic sealing component 3 encounters a ground protrusion, it is compressed, and when it encounters a ground depression, it stretches.

[0048] Specifically, the elastic sealing component 3 is slidably connected to the air door body 10. Refer to Figure 11 shown. Taking the left-to-right direction in the figure as an example, in the state of a flat ground, the compression degree of the spring 312 is moderate, which is the form indicated by the leftmost arrow in the figure; when encountering a ground protrusion, the spring 312 is compressed to a greater extent between the second limit unit 311 and the linear slide bearing 100, which is the form indicated by the rightmost arrow in the figure; when encountering a ground depression, the second limit unit 311 releases the pressure applied to the spring 312, and the spring 312 stretches, which is the form indicated by the middle arrow in the figure.

[0049] The above are only the preferred embodiments of the present invention and are not intended to limit the present invention. Any modifications, equivalent replacements, and improvements made within the spirit and principles of the present invention shall be included in the protection scope of the present invention.

Claims

1. An adaptive sealing air door for underground mine roadways, characterized in that, Comprising: A damper assembly (1), a hydraulic transmission mechanism (2), and a plurality of elastic sealing assemblies (3); The damper assembly (1) includes a damper body (10), a door frame (11), and a hydraulic connecting rod (12). Both ends of the hydraulic connecting rod (12) are fixedly connected to the damper body (10) and the door frame (11) respectively. The hydraulic transmission mechanism (2) is connected to the hydraulic connecting rod (12) through a pipeline, and the hydraulic transmission mechanism (2) is used to drive the hydraulic connecting rod (12) to expand and contract; A plurality of the elastic sealing assemblies (3) are arranged in an array below the damper body (10), and the elastic sealing assemblies (3) are slidably connected to the damper body (10).

2. The self-adaptive sealed air door for underground mine roadway according to claim 1, wherein The elastic sealing assembly (3) includes a mounting seat (30). The mounting seat (30) includes a main body portion (300) and mounting plates (301) provided on both sides of the main body portion (300). The main body portion (300) is slidably connected to the damper body (10). The mounting plates (301) are symmetrically arranged on both sides of the main body portion (300), and the mounting plates (301) are fixedly connected to the main body portion (300); At least two linear slide block bearings (100) are fixedly provided below the damper body (10), and at least two of the linear slide block bearings (100) are symmetrically arranged on both sides of the damper body (10); The elastic sealing assembly (3) further includes two sliding rods (31). The two sliding rods (31) are respectively fixedly installed on the mounting plates (301) on both sides of the main body portion (300), and the sliding rods (31) are slidably connected to the linear slide block bearings (100).

3. The self-adaptive sealed air door for underground mine roadway according to claim 2, wherein, A first limiting unit (310) and a second limiting unit (311) are provided on the sliding rod (31). The first limiting unit (310) is located at the top of the sliding rod (31), and the second limiting unit (311) is located in the middle of the sliding rod (31); A spring (312) is sleeved on the sliding rod (31). When two of the linear slide block bearings (100) are respectively arranged on both sides of the damper body (10), the linear slide block bearings (100) include a first bearing (1000) and a second bearing (1001). The first bearing (1000) is located between the first limiting unit (310) and the second limiting unit (311), the second bearing (1001) is located between the second limiting unit (311) and the mounting plate (301), and the spring (312) is located between the second limiting unit (311) and the first bearing (1000).

4. The self - adaptive sealed air door for underground mine roadway according to claim 2, wherein A first mounting notch (101) is provided at the lower end of the damper body (10). The main body portion (300) is coupled with the first mounting notch (101), and the main body portion (300) is slidably connected to the first mounting notch (101).

5. The self-adaptive sealed air door for underground mine roadway according to claim 2, wherein A pulley (302) is provided at the bottom of the main body portion (300), and the pulley (302) is fixedly connected to the main body portion (300).

6. The self - adaptive sealing air door for underground mine roadway according to claim 5, characterized in that, Seals (303) are provided on both sides of the mounting base (30), and the plane where the seals (303) are located is perpendicular to the plane where the mounting plate (301) is located; a sealing protrusion (3030) is provided at the bottom of the seal (303), the sealing protrusion (3030) faces the pulley (302), and the sealing protrusion (3030) is used to bridge the gap between the pulley (302) and the side of the mounting base (30).

7. The self-adaptive sealing air door for underground mine roadway according to any one of claims 1-6, characterized in that, Mounting protrusions (110) are provided on the door frame (11), one end of the hydraulic link (12) is fixedly connected to the mounting protrusion (110), and the other end is fixedly connected to the damper body (10).

8. The self-adaptive sealing air door for underground mine roadway according to any one of claims 1-6, characterized in that, The hydraulic transmission mechanism (2) includes a hydraulic pump (20), a control valve group (21) and a control module (22). The hydraulic pump (20) and the control valve group (21) are connected by a pipeline. The hydraulic pump (20) outputs pressurized hydraulic oil to the control valve group (21). The control valve group (21) is connected to the hydraulic link (12) by a pipeline. The control module (22) is electrically connected to the hydraulic pump (20) and the control valve group (21). The control module (22) is used to control the start and stop of the hydraulic pump (20) and the parameters of the control valve group (21).

9. The self-adaptive sealed air door for underground mine roadway according to any one of claims 1-6, characterized in that, A protective box (102) is provided below the damper body (10). The protective boxes (102) are symmetrically arranged on both sides of the damper body (10), and the protective boxes (102) are arranged to shield the outside of the elastic sealing assembly (3).

10. A method for using an adaptive sealing air door in an underground mine roadway, applicable to the adaptive sealing air door in an underground mine roadway according to any one of claims 1-9, characterized in that, Comprising: Start the hydraulic transmission mechanism (2), and the hydraulic transmission mechanism (2) drives the hydraulic link (12) to expand and contract; The hydraulic link (12) drives the damper body (10) to rotate; The elastic sealing assembly (3) is compressed when it encounters a ground protrusion and extends when it encounters a ground depression.

Images