Mine air door locking device

Abstract

The invention discloses a mine air door locking device which comprises a channel, the channel penetrates left and right, the left portion and the right portion of the channel are each provided with an air door capable of being opened and closed, each air door comprises a door frame, an upper door plate, a lower door plate and a sealing mechanism, and each door frame is in a groove shape and is fixed to the inner wall of the channel; horizontal and coaxial upper supporting shafts are fixed to the front end and the rear end of the bottom of the upper door plate correspondingly, and horizontal and coaxial lower supporting shafts are fixed to the front end and the rear end of the upper portion of the lower door plate correspondingly. In the using process, when a fire disaster happens, only the lower push-pull mechanism is controlled to open the lower door plate on one side, at the moment, most of smoke in the upper portion in the air is blocked by the upper door plate, and a worker can bend down and even crawl to pass through the air door, then close the lower door plate on the side and open the lower door plate on the other side to escape; and the sealing performance between the upper door plate and the lower door plate can be improved through the sealing mechanism, and circulation of air and smoke can be reduced.

Description

Technical Field

[0001] The invention relates to the technical field of mine ventilation, and in particular to a mine air door locking device. Background Art

[0002] In the mining process, dampers are usually used to control air circulation. While ensuring the passage of workers and objects, it is necessary to avoid opening two dampers at the same time to prevent smooth air circulation, thereby reducing or even avoiding the occurrence of wind short circuit and insufficient air volume. However, the existing damper locking device mostly opens and closes the damper horizontally. This opening and closing method can easily allow smoke and dust from the upper part to enter the space between the two dampers in the event of a fire, thereby easily causing smoke and dust to spread further, which has an adverse impact on safety and highlights the shortcomings of the existing technology. Summary of the invention

[0003] The object of the present invention is to provide a mine air door locking device to solve the technical problem that smoke and dust are easily diffused in the existing air door locking device.

[0004] To achieve the above purpose, the present invention adopts the following technical solutions: A mine air door locking device comprises a channel, the channel runs through from left to right, and each of the left and right parts is equipped with an air door that can be opened and closed, the air door comprises a door frame, an upper door plate, a lower door plate and a sealing mechanism, the door frame is groove-shaped and fixed to the inner wall of the channel, a horizontal and coaxial upper support shaft is fixed to the front and rear ends of the bottom of the upper door plate, a horizontal and coaxial lower support shaft is fixed to the front and rear ends of the upper part of the lower door plate, the upper support shaft and the lower support shaft are respectively plugged with the door frame with a gap, and can slide and rotate up and down along the door frame, an upper push-pull mechanism along the left and right directions is installed on the upper part of the channel, and a lower push-pull mechanism along the left and right directions is installed on the bottom, and the upper push-pull mechanism is hinged to the upper part of the upper door plate left and right The upper door panel is pushed left and right so that the upper support shaft moves up and down along the door frame, and the lower push-pull mechanism is hinged left and right with the bottom of the lower door panel to push the lower door panel left and right so that the lower support shaft moves up and down along the door frame. The upper door panel and the lower door panel can be closed and unfolded with each other under the action of the upper push-pull mechanism and the lower push-pull mechanism. A sealing mechanism is installed between the upper door panel and the lower door panel, and a proximity switch for sensing the lower door panel is fixed on the upper door panel. Warning lights and buzzers are also fixed on the left and right parts of the upper door panel. When the upper door panel and the lower door panel are away from each other to a certain position, the proximity switch of the upper door panel is actuated so that the warning light and the buzzer work, and the proximity switch, warning light and buzzer are externally connected to a power supply.

[0005] Based on the above technical solution, the sealing mechanism includes an elastic sac, and the bottom end of the upper door panel is fixed with an elastic sac along the front-to-back direction, and the elastic sac is filled with a non-flammable and explosive gas medium or liquid medium.

[0006] On the basis of the above technical scheme, the elastic sac is fixedly connected with a connecting nozzle, the elastic sac is filled with water, the channel is fixed with an electric-driven stop valve, the electric-driven stop valve is controlled by an external power supply, the connecting nozzle is connected to the water outlet of the electric-driven stop valve through a surplus hose, the water inlet of the electric-driven stop valve is connected to an external fire water supply system, a cavity is provided at the bottom of the upper door panel, a rubber plug is sealed and fixed at the bottom of the cavity, and a horizontal lifting seat is slidably connected up and down, a plurality of vertical puncture needles are fixed at the bottom of the lifting seat, the puncture needles and the rubber plugs are sealed and slidably connected up and down, a vertical double-acting cylinder is fixed to the upper part of the cavity, the piston rod of the double-acting cylinder is fixed to the top of the lifting seat, the two air inlets of the double-acting cylinder are connected to the external pneumatic system, the double-acting cylinder can drive the lifting seat to move up and down along the cavity when the piston rod is extended and retracted, and the lifting seat can be penetrated and punctured by the puncture needles at the upper and lower parts of the elastic sac when the lifting seat moves downward to a certain position.

[0007] The two-way screw rod is rotatably connected to the door frame and the channel, and the upper and lower parts of the two-way screw rod are respectively driven by the rotation drive mechanism.

[0008] On the basis of the above technical scheme, the rotary drive mechanism includes a box body, a No. 1 transmission shaft, a No. 2 transmission shaft, and an air motor. The upper and lower parts of the channel are each fixed with a box body, and the front and rear parts of the box body are each rotatably connected with a No. 1 transmission shaft extending along the left and right directions, and the No. 1 transmission shafts of the upper push-pull mechanism are connected to the upper screw rods through gear meshing for transmission, and the No. 1 transmission shafts of the lower push-pull mechanism are connected to the bidirectional screw rods through gear meshing for transmission, and the left and right parts of the box body are each rotatably connected with a No. 2 transmission shaft extending along the front and back directions, and the front and rear parts of each No. 2 transmission shaft are respectively connected to the No. 1 transmission shafts of the front and rear parts of the box body through bevel gear meshing for transmission, and the left and right parts of the box body are each fixed with an air motor, and the output shaft of the air motor is connected to the No. 2 transmission shafts through bevel gear meshing for transmission, and the air motor is connected to an external pneumatic system, and the air motor can rotate forward and reverse when compressed air in different directions is passed.

[0009] On the basis of the above technical solution, the pneumatic motor includes a shell, a main upper air inlet pipe, a main lower air inlet pipe, an air outlet pipe, an output shaft, and blades. The upper part of the shell is fixedly connected to the main upper air inlet pipe, and the lower part is fixedly connected to the main lower air inlet pipe. The middle part of the shell is fixedly connected to the air outlet pipe. The shell is sealed and rotatably connected to the output shaft along the left and right directions. A plurality of blades are fixed at equal angles on the circumference of the output shaft, and each of the blades is gap-inserted in the shell. The main upper air inlet pipe corresponds to the blades on the upper side of the output shaft, and the main lower air inlet pipe corresponds to the blades on the lower side of the output shaft.

[0010] On the basis of the above technical scheme, the channel is equipped with an upper pneumatic control mechanism and a lower pneumatic control mechanism, and the upper pneumatic control mechanism and the lower pneumatic control mechanism respectively include a left control box, a central control box and a right control box, and the left control box, the central control box and the right control box are respectively equipped with a left joystick, a central joystick and a right joystick, and a linkage mechanism is installed between the left joystick and the central joystick and between the central joystick and the right joystick. The right control box is provided with three gears of upper left, lower left and middle, the central control box is provided with five gears of upper left, lower left, middle, upper right and lower right, the left control box is provided with three gears of upper right, lower right and middle, the upper left, lower left, upper right and lower right four gears are respectively provided with horizontal grooves close to the middle gear, and the left control box and the left joystick are connected. A return-to-center mechanism and a limit mechanism are respectively installed between the middle control box and the middle joystick, and between the right control box and the right joystick. The left joystick, the middle joystick and the right joystick have a tendency to move left and right and approach the middle gear position under the action of the return-to-center mechanism. The middle joystick and the right joystick have a tendency to be limited to the upper left gear position and the lower left gear position under the action of the return-to-center mechanism and the limit mechanism. The middle joystick and the left joystick have a tendency to be limited to the upper right gear position and the lower right gear position under the action of the return-to-center mechanism and the limit mechanism. The left joystick, the middle joystick and the right joystick can achieve synchronous movement left and right through a linkage mechanism. The left part of the middle control box and the left part of the right control box are respectively fixed with a left rotating three-way valve. The right part of the middle control box and the right part of the left control box A right-rotating three-way valve is fixed separately, and when one of the right joystick or the middle joystick moves to a certain position to the left, it can dock with the valve core of the left-rotating three-way valve; after the right joystick or the middle joystick docks with the valve core of the left-rotating three-way valve and swings up and down, the valve core can be rotated to switch the direction of the gas path; when one of the left joystick or the middle joystick moves to a certain position to the right, it can dock with the valve core of the right-rotating three-way valve; after the left joystick or the middle joystick docks with the valve core of the right-rotating three-way valve and swings up and down, the valve core can be rotated to switch the direction of the gas path; the air inlet end of the left-rotating three-way valve and the air inlet end of the right-rotating three-way valve are respectively connected to the external pneumatic system, and the A outlet ends of the two left-rotating three-way valves in the upper pneumatic control mechanism are simultaneously connected to The main upper air inlet pipe of the pneumatic motor of the upper door panel on the right side of the control channel is connected through a pipeline, and the B air outlet ends of the two left-rotating three-way valves in the upper pneumatic control mechanism are simultaneously connected to the main lower air inlet pipe of the pneumatic motor of the upper door panel on the right side of the control channel through a pipeline, and the A air outlet ends of the two left-rotating three-way valves in the lower pneumatic control mechanism are simultaneously connected to the main upper air inlet pipe of the pneumatic motor of the lower door panel on the right side of the control channel through a pipeline, and the B air outlet ends of the two left-rotating three-way valves in the lower pneumatic control mechanism are simultaneously connected to the main lower air inlet pipe of the pneumatic motor of the lower door panel on the right side of the control channel through a pipeline, and the A air outlet ends of the two right-rotating three-way valves in the upper pneumatic control mechanism are simultaneously connected to the main upper air inlet pipe of the pneumatic motor of the upper door panel on the left side of the control channel through a pipeline.The B outlet ends of the two right-rotating three-way valves in the upper pneumatic control mechanism are simultaneously connected to the main lower air inlet pipe of the pneumatic motor of the left upper door plate of the control channel through a pipeline, the A outlet ends of the two right-rotating three-way valves in the lower pneumatic control mechanism are simultaneously connected to the main upper air inlet pipe of the pneumatic motor of the left lower door plate of the control channel through a pipeline, and the B outlet ends of the two right-rotating three-way valves in the lower pneumatic control mechanism are simultaneously connected to the main lower air inlet pipe of the pneumatic motor of the left lower door plate of the control channel through a pipeline.

[0011] On the basis of the above technical scheme, the left-rotating three-way valve comprises a left three-way valve body, a left valve core body, and a left transmission cylinder; the right-rotating three-way valve comprises a right three-way valve body, a right valve core body, and a right transmission cylinder; the left part of the central control box and the left part of the right control box are respectively fixed with the left three-way valve body, and the right part of the central control box and the right part of the left control box are respectively fixed with the right three-way valve body; the left valve core body is rotatably connected to the left three-way valve body, and the right valve core body is rotatably connected to the right three-way valve body; the upper and lower parts of the left three-way valve body and the upper and lower parts of the right three-way valve body are respectively fixedly connected with a No. 3 air outlet pipe, the left valve core body and the right valve core body are respectively radially penetrated with through holes, the No. 3 air outlet pipe on the upper part of the left three-way valve body and the No. 3 air outlet pipe on the upper part of the right three-way valve body are A air outlet ends, and the No. 3 air outlet pipe on the lower part of the left three-way valve body and the No. 3 air outlet pipe on the lower part of the right three-way valve body are both B air outlet ends. At the air outlet end, the left part of the left valve core body and the right part of the right valve core body are respectively coaxially fixed and connected with a No. 3 air inlet pipe, and the No. 3 air inlet pipe is the air inlet end of the left rotating three-way valve or the right rotating three-way valve in which they are located. When the left valve core body and the right valve core body are rotated forwards and backwards to a certain angle, the through hole can be aligned and connected with any No. 3 air outlet pipe, and the right part of the left valve core body is coaxially fixed with a left transmission cylinder, and the left part of the right valve core body is coaxially fixed with a right transmission cylinder, the inner wall of the left transmission cylinder and the inner wall of the right transmission cylinder are regular quadrangular prisms of the same size and coaxial, the left joystick, the middle joystick and the right joystick are all regular quadrangular prisms matching the inner wall of the left transmission cylinder or the inner wall of the right transmission cylinder, the right part of the left joystick and the right part of the middle joystick can be plugged into the right transmission cylinder, and the left part of the right joystick and the left part of the middle joystick can be plugged into the left transmission cylinder.

[0012] On the basis of the above technical scheme, the linkage mechanism includes hydraulic cylinder No. 1, hydraulic cylinder No. 2, hydraulic cylinder No. 3, hydraulic cylinder No. 4, left transmission housing, middle transmission housing and right transmission housing, and the right part of the left control box, the left part of the middle control box, the right part of the middle control box and the left part of the right control box are respectively fixed with hydraulic cylinder No. 1, hydraulic cylinder No. 2, hydraulic cylinder No. 3 and hydraulic cylinder No. 4 extending in the left and right directions, the left end of the piston of the hydraulic cylinder No. 1 is fixed with the left transmission housing, the piston of the hydraulic cylinder No. 2 and the piston of the hydraulic cylinder No. 3 are jointly fixed with the middle transmission housing, and the right end of the piston of the hydraulic cylinder No. 3 is fixed with the right transmission housing, and the left joystick, middle joystick and right joystick are respectively fixed with the left transmission housing, the middle transmission housing and the right transmission housing The left joystick, the middle joystick and the right joystick can move up and down in the left transmission housing, the middle transmission housing and the right transmission housing respectively. When the left joystick, the middle joystick and the right joystick move left and right, they can respectively drive the left transmission housing, the middle transmission housing and the right transmission housing to move synchronously. The No. 1 hydraulic cylinder is connected with the No. 2 hydraulic cylinder through a hydraulic pipeline and stores hydraulic oil together. The No. 3 hydraulic cylinder and the No. 4 hydraulic cylinder are connected with each other through a hydraulic pipeline and stores hydraulic oil together. The return mechanism includes a support seat, a support plate and a spring. The left and right parts of the left control box, the left and right parts of the middle control box and the left and right parts of the right control box are respectively fixed with support seats, and the front of each support seat is rotatably connected with A support plate, the left and right parts of the left joystick, the left and right parts of the middle joystick and the left and right parts of the right joystick are respectively connected to the support plate for left and right sliding movement, and springs are fixed between the left and right parts of the left joystick, the left and right parts of the middle joystick and the left and right parts of the right joystick for left and right sliding movement, and the left, middle and right joysticks always have a tendency to approach the middle gear position under the elastic force of the springs, and the limiting mechanism comprises a light rod, a lower connecting piece, an upper connecting piece, a tension spring and a straight groove, and light rods extending in the left and right directions are respectively fixed to the bottom of the left control box, the bottom of the middle control box and the bottom of the right control box, and the lower connecting piece is inserted in the gap between the light rods, and the lower connecting piece can slide left and right and swing back and forth along the light rods The lower connecting piece is slidably connected to the upper connecting piece up and down, and a tension spring is fixed between the lower connecting piece and the upper connecting piece, and the upper connecting piece and the lower connecting piece have a tendency to approach each other under the elastic tension of the tension spring, and the bottoms of the left joystick, the middle joystick and the right joystick are respectively fixed with straight grooves extending in reverse directions in the front and back directions, and the straight grooves extend to the front and rear sides of the virtual rotation axis of the support plate, and the upper connecting piece is gap-connected with the straight grooves and can move forward and backward along the straight grooves, and the straight grooves can tilt forward and backward when following the left joystick, the middle joystick or the right joystick to swing up and down, so that the upper connecting piece moves to the bottom of the inclination of the straight groove under the elastic repulsive force of the tension spring, and then the inclination state of the straight groove is limited.

[0013] On the basis of the above technical scheme, the side wall of the main upper air intake pipe is fixedly connected with a secondary upper air intake pipe, and the side wall of the main lower air intake pipe is fixedly connected with a secondary lower air intake pipe. The secondary upper air intake pipe and the secondary lower air intake pipe are respectively connected to the external pneumatic system via the secondary one-way valve, and the main upper air intake pipe and the main lower air intake pipe are respectively connected to the external pneumatic system via the main one-way valve. The secondary one-way valve only allows compressed air to enter the pneumatic motor through the respective secondary upper air intake pipe or the secondary lower air intake pipe, and the main one-way valve only allows compressed air to enter the pneumatic motor through the respective main upper air intake pipe or the main lower air intake pipe.

[0014] Compared with the prior art, the present invention has the following advantages: during the use of the present invention, when a fire occurs, only one side of the lower door panel is opened by controlling the lower push-pull mechanism. At this time, most of the smoke and dust in the upper part of the air are blocked by the upper door panel, and the workers can bend over or even crawl through the damper, and then close the lower door panel on this side and open the lower door panel on the other side to escape, which can greatly reduce the diffusion and flow of smoke and dust. The sealing mechanism can improve the sealing between the upper door panel and the lower door panel, which can reduce the circulation of air and smoke and improve safety. The proximity switch and warning light are used to indicate the opening and closing of the damper, which not only reminds personnel to pay attention, but also reduces the occurrence of the phenomenon of two dampers opening at the same time caused by misoperation.

[0015] When a fire occurs, the needle penetrates the elastic sac and then resets. During this period, the electric drive stop valve is controlled to be turned on, so that the water from the fire water supply system can be continuously replenished into the elastic sac, thereby continuously spraying. The smoke and dust that want to pass through the damper can be reduced, and the diffusion of smoke and dust, and even the spread of flames, can be further reduced. When workers pass by, their clothes can also be wetted, thereby reducing the risk of workers being burned by flames and improving safety. When the lower door panel is closed, it is only necessary to ensure the supply of fire water to keep the elastic sac filled at all times, thereby ensuring air tightness.

[0016] By setting up a linkage mechanism, workers can be prevented from opening and closing two dampers on the left and right sides of the passage at the same time. That is, when the damper on one side is opened, an indication will be given on the left joystick or the right joystick on the other side to remind the personnel. When the left joystick and the right joystick are operated at the same time to open and close the damper, the linkage mechanism will produce opposite repulsive forces, thereby giving a reminder. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is a schematic diagram of the axial side structure of the present invention.

[0018] Figure 2 It is a front sectional structural schematic diagram of the present invention.

[0019] Figure 3 It is a schematic diagram of the cooperation between the upper door panel and the lower door panel of the present invention.

[0020] Figure 4 It is a schematic diagram of the front sectional structure of the upper door panel of the present invention.

[0021] Figure 5 It is a schematic diagram of the side section structure of the shell of the present invention.

[0022] Figure 6 It is a front view schematic diagram of the upper pneumatic control mechanism and the lower pneumatic control mechanism of the present invention.

[0023] Figure 7 It is a schematic diagram of the cooperation between the central control box and the central joystick of the present invention.

[0024] Figure 8 It is a schematic diagram of the bottom structure of the left joystick of the present invention.

[0025] Fig. 9 Schematic diagram of pneumatic control of the pneumatic motor of the present invention.

[0026] In the figure: 1, channel, 2, damper, 3, door frame, 4, upper door panel, 5, lower door panel, 7, upper support shaft, 8, lower support shaft, 11, proximity switch, 12, warning light, 13, buzzer, 14, elastic capsule, 15, connecting nozzle, 16, electric drive stop valve, 17, cavity, 18, rubber plug, 19, lifting seat, 20, needle, 21, double-acting cylinder, 23, upper sliding seat, 24, upper screw, 25, Upper articulated shaft, 26, lower sliding seat, 27, bidirectional screw, 28, box, 29, No. 1 transmission shaft, 30, No. 2 transmission shaft, 32, shell, 33, main upper air inlet pipe, 34, main lower air inlet pipe, 35, air outlet pipe, 36, output shaft, 37, blade, 38, upper pneumatic control mechanism, 39, lower pneumatic control mechanism, 40, left control box, 41, center control box, 42, right control box, 43, left joystick, 44, Middle joystick, 45, right joystick, 47, upper left gear, 48, lower left gear, 49, middle gear, 50, upper right gear, 51, lower right gear, 52, groove, 57, left three-way valve body, 58, left valve core body, 59, left transmission cylinder, 60, right three-way valve body, 61, right valve core body, 62, right transmission cylinder, 63, No. 3 air outlet pipe, 64, through hole, 65, No. 3 air inlet pipe, 66, No. 1 hydraulic cylinder , 67. Hydraulic cylinder No. 2, 68. Hydraulic cylinder No. 3, 69. Hydraulic cylinder No. 4, 70. Left transmission housing, 71. Middle transmission housing, 72. Right transmission housing, 73. Support seat, 74. Support plate, 75. Spring, 76. Bare rod, 77. Lower connecting piece, 78. Upper connecting piece, 79. Tension spring, 80. Straight groove, 81. Auxiliary upper air inlet pipe, 82. Auxiliary lower air inlet pipe, 83. Auxiliary check valve, 84. Main check valve. DETAILED DESCRIPTION

[0027] The present invention is further described in detail below with reference to the accompanying drawings and specific embodiments.

[0028] like Figure 1-Figure 9 As shown, a mine air door locking device comprises a channel 1, which runs through from left to right, and each of the left and right parts is equipped with an air door 2 that can be opened and closed, the air door 2 comprises a door frame 3, an upper door panel 4, a lower door panel 5 and a sealing mechanism, the door frame 3 is groove-shaped and fixed to the inner wall of the channel 1, and a horizontal and coaxial upper support shaft 7 is fixed at the front and rear ends of the bottom of the upper door panel 4, and a horizontal and coaxial lower support shaft 8 is fixed at the front and rear ends of the upper part of the lower door panel 5, the upper support shaft 7 and the lower support shaft 8 are respectively plugged with the door frame 3 with a gap, and can slide and rotate up and down along the door frame 3, an upper push-pull mechanism along the left and right directions is installed on the upper part of the channel 1, and a lower push-pull mechanism along the left and right directions is installed on the bottom, the upper push-pull mechanism is hinged to the upper part of the upper door panel 4 left and right to realize the left and right pushing of the upper door panel 4 so that the upper support shaft 7 moves up and down along the door frame 3 The lower push-pull mechanism is hinged to the bottom of the lower door panel 5 left and right to push the lower door panel 5 left and right so that the lower support shaft 8 moves up and down along the door frame 3. The upper door panel 4 and the lower door panel 5 can be closed and unfolded with each other under the action of the upper push-pull mechanism and the lower push-pull mechanism. A sealing mechanism is installed between the upper door panel 4 and the lower door panel 5. The upper door panel 4 is fixed with a proximity switch 11 for sensing the lower door panel 5. The left and right parts of the upper door panel 4 are also fixed with a warning light 12 and a buzzer 13. When the upper door panel 4 and the lower door panel 5 are away from a certain position, the proximity switch 11 of the upper door panel 4 is actuated so that the warning light 12 and the buzzer 13 work. The proximity switch 11, the warning light 12 and the buzzer 13 are externally connected to a power supply. The proximity switch 11 is a prior art, such as a Hall switch. When the proximity switch 11 is a Hall switch, the lower door panel 5 is magnetic.

[0029] In normal use, by controlling the push and pull of the upper push-pull mechanism, the upper door panel 4 can be moved up and down, and by controlling the push and pull of the lower push-pull mechanism, the lower door panel 5 can be moved up and down, thereby realizing the opening and closing of the upper door panel 4 and the lower door panel 5, so as to facilitate the passage of people or objects. When a fire occurs, only one side of the lower door panel 5 is opened by controlling the lower push-pull mechanism. At this time, most of the smoke and dust in the upper part of the air are blocked by the upper door panel 4, and the workers can bend over or even crawl through the damper 2, and then close the lower door panel 5 on this side and open the lower door panel 5 on the other side to escape, which can greatly reduce the diffusion and flow of smoke and dust. The sealing mechanism can improve the sealing between the upper door panel 4 and the lower door panel 5, which can reduce the circulation of air and smoke and improve safety. The proximity switch 11 and the warning light 12 are used to indicate the opening and closing of the damper 2, reminding personnel to pay attention, and reducing the occurrence of the phenomenon of two dampers 2 opening at the same time caused by misoperation.

[0030] The sealing mechanism comprises an elastic sac 14 . The elastic sac 14 is fixed to the bottom end of the upper door panel 4 along the front-to-back direction. The elastic sac 14 is filled with a non-flammable and non-explosive gas medium or liquid medium.

[0031] Furthermore, when the upper door panel 4 and the lower door panel 5 are closed, the lower door panel 5 can squeeze the elastic bag 14, so that the elastic bag 14 and the lower door panel 5 fit closely, thereby improving air tightness.

[0032] The elastic sac 14 is fixedly connected with a connecting nozzle 15, and the elastic sac 14 is filled with water. The channel 1 is fixed with an electric stop valve 16, and the electric stop valve 16 is controlled by an external power supply. The connecting nozzle 15 is connected to the water outlet of the electric stop valve 16 through a surplus hose, and the water inlet of the electric stop valve 16 is connected to the external fire water supply system. The bottom of the upper door panel 4 is provided with a cavity 17, and the bottom of the cavity 17 is sealed and filled with a rubber plug 18, and is connected to a horizontal lifting seat 19 for sliding up and down. The bottom of the lifting seat 19 A plurality of vertical needles 20 are fixed, and the needles 20 are sealed and slidably connected with the rubber plug 18 up and down. A vertical double-acting cylinder 21 is fixed on the upper part of the cavity 17, and the piston rod of the double-acting cylinder 21 is fixed to the top of the lifting seat 19. The two air inlets of the double-acting cylinder 21 are connected to the external pneumatic system. When the double-acting cylinder 21 retracts and retracts the piston rod, it can drive the lifting seat 19 to move up and down along the cavity 17. When the lifting seat 19 moves downward to a certain position, the needles 20 can penetrate and puncture the upper and lower parts of the elastic capsule 14.

[0033] Furthermore, when a fire occurs, while the lower door panel 5 is gradually opened, the double-acting cylinder 21 is controlled to extend and retract the piston rod once, so that the lifting seat 19 can be lifted and lowered once, that is, the needle 20 penetrates the elastic capsule 14 and then resets. At this time, the water in the elastic capsule 14 flows downward through the punctured hole. During this period, the electric drive stop valve 16 is controlled to be turned on, so that the water of the fire water supply system can be continuously replenished into the elastic capsule 14, so as to continuously spray, and the smoke and dust that want to pass through the damper 2 can be reduced, and the diffusion of smoke and dust, and even the spread of flames, can be further reduced. When workers pass by, the workers' clothes can also be wetted, thereby reducing the risk of workers being burned by flames and improving safety. When the lower door panel 5 is closed, it is only necessary to ensure the supply of fire water to keep the elastic capsule 14 in a full state, thereby ensuring air tightness.

[0034] The upper push-pull mechanism and the lower push-pull mechanism respectively include a rotation drive mechanism, the upper push-pull mechanism includes an upper sliding seat 23 and an upper screw rod 24, the upper portion of the channel 1 is slidably connected to a horizontal upper sliding seat 23, the front and rear portions of the upper sliding seat 23 are each threadedly connected to an upper screw rod 24 extending in the left and right directions, the upper screw rod 24 is rotatably connected to the door frame 3 and the channel 1, the front and rear portions of the upper sliding seat 23 are each fixed with a horizontal and coaxial upper hinge shaft 25, the upper hinge shaft 25 is connected to the upper door panel The upper part of the door frame 3 is hinged to the left and right, the lower push-pull mechanism includes a lower sliding seat 26 and a bidirectional screw rod 27, the bottom of the channel 1 is slidably connected to the left and right with a horizontal lower sliding seat 26, the lower sliding seats 26 on the left and right sides of the door frame 3 form a group, and the front and rear parts of the two groups of lower sliding seats 26 are respectively threadedly connected to the bidirectional screw rod 27 extending along the left and right directions, the bidirectional screw rod 27 is rotatably connected to the door frame 3 and the channel 1, and the upper screw rod 24 and the bidirectional screw rod 27 are respectively driven to rotate by the rotation drive mechanism.

[0035] Furthermore, by driving the upper screw rod 24 to rotate forward and reversely through the rotary drive mechanism, the upper sliding seat 23 can slide left and right, thereby realizing the opening and closing of the upper door panel 4. By driving the bidirectional screw rod 27 to rotate forward and reversely through the rotary drive mechanism, the lower sliding seat 26 can slide left and right, thereby realizing the opening and closing of the lower door panel 5.

[0036] The rotary drive mechanism includes a box 28, a No. 1 transmission shaft 29, a No. 2 transmission shaft 30, and an air motor. The upper and lower parts of the channel 1 are each fixed with a box 28. The front and rear parts of the box 28 are each rotatably connected with a No. 1 transmission shaft 29 extending in the left and right directions. The No. 1 transmission shaft 29 of the upper push-pull mechanism is connected to the upper screw rod 24 through gear meshing. The No. 1 transmission shaft 29 of the lower push-pull mechanism is connected to the bidirectional screw rod 27 through gear meshing. The left and right parts of the box 28 are connected to the upper and lower parts of the channel 1. Each rotating connection is provided with a No. 2 transmission shaft 30 extending in the front-to-back direction, and the front and rear parts of each No. 2 transmission shaft 30 are respectively connected to the No. 1 transmission shaft 29 of the front and rear parts of the box body 28 through bevel gear meshing for transmission, and the left and right parts of the box body 28 are each fixed with an air motor, and the output shaft 36 of the air motor is connected to each No. 2 transmission shaft 30 through bevel gear meshing for transmission, and the air motor is connected to an external pneumatic system, and the air motor can rotate forward and reverse when compressed air in different directions is passed through it.

[0037] Furthermore, when the pneumatic motor rotates forwards and backwards, the upper screw 24 and the bidirectional screw 27 can be rotated forwards and backwards through the bevel gear, the second transmission shaft 30, the first transmission shaft 29 and the gear.

[0038] The pneumatic motor includes a shell 32, a main upper air inlet pipe 33, a main lower air inlet pipe 34, an air outlet pipe 35, an output shaft 36, and blades 37. The upper portion of the shell 32 is fixedly connected to the main upper air inlet pipe 33, and the lower portion is fixedly connected to the main lower air inlet pipe 34. The middle portion of the shell 32 is fixedly connected to the air outlet pipe 35. The shell 32 is sealed and rotatably connected to the output shaft 36 in the left and right directions. The output shaft 36 is fixed with a plurality of blades 37 at equal angles on the circumference, and each of the blades 37 is gap-inserted in the shell 32. The main upper air inlet pipe 33 corresponds to the blades 37 on the upper side of the output shaft 36, and the main lower air inlet pipe 34 corresponds to the blades 37 on the lower side of the output shaft 36.

[0039] Furthermore, when compressed air is introduced into the main upper air inlet pipe 33, the compressed air pushes the blades 37 to drive the output shaft 36 to rotate and finally be discharged from the air outlet pipe 35, thereby realizing the forward rotation of the output shaft 36. When compressed air is introduced into the main lower air inlet pipe 34, the compressed air pushes the blades 37 to drive the output shaft 36 to rotate and finally be discharged from the air outlet pipe 35, thereby realizing the reverse rotation of the output shaft 36.

[0040] The channel 1 is equipped with an upper pneumatic control mechanism 38 and a lower pneumatic control mechanism 39, and the upper pneumatic control mechanism 38 and the lower pneumatic control mechanism 39 respectively include a left control box 40, a central control box 41 and a right control box 42, and a left joystick 43, a central joystick 44 and a right joystick 45 are installed in the left control box 40, the central control box 41 and the right control box 42 in sequence, and a linkage mechanism is installed between the left joystick 43 and the central joystick 44 and between the central joystick 44 and the right joystick 45. The right control box 42 is provided with three gears of upper left, lower left and middle, the central control box 41 is provided with five gears of upper left, lower left, middle, upper right and lower right, the left control box 40 is provided with three gears of upper right, lower right and middle, the upper left The four gears of left, lower left, upper right and lower right are respectively provided with horizontal grooves 52 approaching the middle gear 49; a return-to-center mechanism and a limit mechanism are respectively installed between the left control box 40 and the left joystick 43, between the center control box 41 and the center joystick 44, and between the right control box 42 and the right joystick 45; the left joystick 43, the center joystick 44 and the right joystick 45 have a tendency to move left and right and approach the middle gear 49 under the action of the return-to-center mechanism; the center joystick 44 and the right joystick 45 have a tendency to be limited in the grooves 52 of the upper left gear 47 and the lower left gear 48 under the action of the return-to-center mechanism and the limit mechanism; the center joystick 44 and the left joystick 43 have a limit mechanism under the action of the return-to-center mechanism and the limit mechanism. In the groove 52 trend of the upper right gear position 50 and the lower right gear position 51, the left joystick 43, the middle joystick 44 and the right joystick 45 can realize synchronous movement to the left and right through a linkage mechanism. The left part of the central control box 41 and the left part of the right control box 42 are respectively fixed with a left-rotating three-way valve, and the right part of the central control box 41 and the right part of the left control box 40 are respectively fixed with a right-rotating three-way valve. When either the right joystick 45 or the middle joystick 44 moves to a certain position to the left, it can dock with the valve core of the left-rotating three-way valve. After the right joystick 45 or the middle joystick 44 docks with the valve core of the left-rotating three-way valve and swings up and down, the valve core can rotate to switch the direction of the gas path. When it moves to the right to a certain position, it can dock with the valve core of the right rotating three-way valve. After the left control rod 43 or the middle control rod 44 docks with the valve core of the right rotating three-way valve and swings up and down, the valve core can rotate to switch the direction of the air path. The air inlet end of the left rotating three-way valve and the air inlet end of the right rotating three-way valve are respectively connected to the external pneumatic system. The A outlet ends of the two left rotating three-way valves in the upper pneumatic control mechanism 38 are simultaneously connected to the main upper air inlet pipe 33 of the pneumatic motor of the right upper door panel 4 of the control channel 1 through a pipeline. The B outlet ends of the two left rotating three-way valves in the upper pneumatic control mechanism 38 are simultaneously connected to the main lower air inlet pipe 34 of the pneumatic motor of the right upper door panel 4 of the control channel 1 through a pipeline.The A outlet ends of the two left-rotating three-way valves in the lower pneumatic control mechanism 39 are simultaneously connected to the main upper air inlet pipe 33 of the pneumatic motor of the right lower door panel 5 of the control channel 1 through a pipeline, and the B outlet ends of the two left-rotating three-way valves in the lower pneumatic control mechanism 39 are simultaneously connected to the main lower air inlet pipe 34 of the pneumatic motor of the right lower door panel 5 of the control channel 1 through a pipeline, and the A outlet ends of the two right-rotating three-way valves in the upper pneumatic control mechanism 38 are simultaneously connected to the main upper air inlet pipe 33 of the pneumatic motor of the left upper door panel 4 of the control channel 1 through a pipeline. The B outlet ends of the two right-rotating three-way valves in the upper pneumatic control mechanism 38 are simultaneously connected to the main lower air inlet pipe 34 of the pneumatic motor of the left upper door plate 4 of the control channel 1 through a pipeline, and the A outlet ends of the two right-rotating three-way valves in the lower pneumatic control mechanism 39 are simultaneously connected to the main upper air inlet pipe 33 of the pneumatic motor of the left lower door plate 5 of the control channel 1 through a pipeline, and the B outlet ends of the two right-rotating three-way valves in the lower pneumatic control mechanism 39 are simultaneously connected to the main lower air inlet pipe 34 of the pneumatic motor of the left lower door plate 5 of the control channel 1 through a pipeline.

[0041] Furthermore, during use, first, the left joystick 43, the middle joystick 44 and the right joystick 45 are all in the middle gear position 49, at which time the left rotating three-way valve and the right rotating three-way valve are closed, and the upper door panel 4 and the lower door panel 5 are both closed. When it is necessary to pass from right to left, the right joystick 45 is moved and swung into the groove 52 of the upper left gear position 47, and this gear position can be maintained under the action of the return mechanism and the limit mechanism. In this process, the left joystick 43 and the middle joystick 44 move left and right accordingly. Since the right joystick 45 enters the upper left gear position 47, the left rotating three-way valve in the right control box 42 is turned on, and compressed air enters the upper door panel 4 or the lower door panel 5 on the right side of the control channel 1 through the main upper air intake pipe 33. The air motor is driven, thereby causing the pneumatic motor to rotate forward, so that the upper door panel 4 or the lower door panel 5 on the right side of the channel 1 is opened. After it is completely opened, the right joystick 45 is returned to the middle gear position 49, and the left rotating three-way valve can be closed. When a person enters between the two dampers 2 in the channel 1, the middle joystick 44 is manually moved and swung into the groove 52 of the lower left gear position 48, and this gear position can be maintained under the action of the limit mechanism. In this process, the left joystick 43 and the right joystick 45 follow the middle joystick 44 to move left and right. Since the middle joystick 44 enters the lower left gear position 48, the left rotating three-way valve in the central control box 41 is connected and the air path direction is switched, and the compressed air enters the right side of the control channel 1 through the main lower air inlet pipe 34. The air motor of the upper door panel 4 or the lower door panel 5 on the right side of the channel 1 is turned on, thereby reversing the air motor and closing the upper door panel 4 or the lower door panel 5 on the right side of the channel 1. Then, the person controls the middle joystick 44 to return to the middle gear position 49 to close the left rotating three-way valve. Then, the person controls the middle joystick 44 to move and swing to the groove 52 of the upper right gear position 50, and this gear position can be maintained under the action of the limit mechanism. At this time, the left joystick 43 and the right joystick 45 both move left and right accordingly, and the right rotating three-way valve in the central control box 41 is turned on, and the compressed air enters the air motor of the upper door panel 4 or the lower door panel 5 on the left side of the control channel 1 through the main upper air inlet pipe 33, thereby causing the air motor to rotate forward, so that the upper door panel 4 or the lower door panel 5 on the left side of the channel 1 is turned on. The lower door panel 5 is opened, and then the middle joystick 44 is returned to the middle gear position 49, so that the right rotating three-way valve can be closed. Then the person passes through the damper 2 on the left side of the channel 1, and then controls the left joystick 43 to move and swing into the groove 52 of the lower right gear position 51, and the middle joystick 44 and the right joystick 45 move left and right accordingly, so that the right rotating three-way valve in the left control box 40 is connected and the air path is switched, and the compressed air enters the pneumatic motor of the upper door panel 4 or the lower door panel 5 on the left side of the control channel 1 through the main lower air inlet pipe 34, so that the pneumatic motor is reversed, so that the upper door panel 4 and the lower door panel 5 on the left side of the channel 1 are closed, and after closing, the left joystick 43 is returned to the middle gear position 49, so that the right rotating three-way valve can be closed.The passage process from left to right can be deduced in the same way, and will not be elaborated here. By setting up a linkage mechanism, it can be avoided that workers open and close the two dampers 2 on the left and right sides of the passage 1 at the same time. That is, when the damper 2 on one side is opened, an indication will be given on the left joystick 43 or the right joystick 45 on the other side to remind the personnel. When the left joystick 43 and the right joystick 45 are operated at the same time to open and close the damper 2, the linkage mechanism will produce contradictory repulsive forces, thereby giving a reminder.

[0042] The left-rotating three-way valve comprises a left three-way valve body 57, a left valve core body 58, and a left transmission cylinder 59. The right-rotating three-way valve comprises a right three-way valve body 60, a right valve core body 61, and a right transmission cylinder 62. The left three-way valve body 57 is fixed to the left part of the central control box 41 and the left part of the right control box 42, respectively. The right three-way valve body 60 is fixed to the right part of the central control box 41 and the right part of the left control box 40, respectively. The left valve core body 58 is rotatably connected to the left three-way valve body 57, and the right three-way valve body 60 is rotatably connected to the right three-way valve body 60. There is a right valve core body 61, the upper and lower parts of the left three-way valve body 57 and the upper and lower parts of the right three-way valve body 60 are respectively fixedly connected with a No. 3 air outlet pipe 63, the left valve core body 58 and the right valve core body 61 are respectively radially penetrated with a through hole 64, the No. 3 air outlet pipe 63 on the upper part of the left three-way valve body 57 and the No. 3 air outlet pipe 63 on the upper part of the right three-way valve body 60 are A outlet ends, and the No. 3 air outlet pipe 63 on the lower part of the left three-way valve body 57 and the No. 3 air outlet pipe 63 on the lower part of the right three-way valve body 60 are both B outlet ends. At the air outlet end, the left part of the left valve core body 58 and the right part of the right valve core body 61 are coaxially fixedly connected with a No. 3 air inlet pipe 65, respectively. The No. 3 air inlet pipe 65 is the air inlet end of the left rotating three-way valve or the right rotating three-way valve where each is located. When the left valve core body 58 and the right valve core body 61 are rotated forward and backward to a certain angle, the through hole 64 can be aligned and connected with any No. 3 air outlet pipe 63. The right part of the left valve core body 58 is coaxially fixed with a left transmission cylinder 59, and the left part of the right valve core body 61 is coaxially fixed with a left transmission cylinder 59. There is a right transmission cylinder 62, the inner wall of the left transmission cylinder 59 and the inner wall of the right transmission cylinder 62 are in the shape of a regular quadrangular prism of the same size and coaxially, the left joystick 43, the middle joystick 44 and the left and right joystick 45 are in the shape of a regular quadrangular prism matching the inner wall of the left transmission cylinder 59 or the inner wall of the right transmission cylinder 62, the right part of the left joystick 43 and the right part of the middle joystick 44 can be plugged into the right transmission cylinder 62, and the left part of the right joystick 45 and the left part of the middle joystick 44 can be plugged into the left transmission cylinder 59.

[0043] Furthermore, when the left joystick 43, the middle joystick 44 and the right joystick 45 move to the left to a certain position, the middle joystick 44 and the right joystick 45 can be plugged into the left transmission cylinder 59, while the left joystick 43 and the right transmission cylinder 62 are not plugged in. At this time, if the middle joystick 44 or the right joystick 45 enters the upper left gear position 47 or the lower left gear position 48, the left valve core body 58 will rotate following the swing of the middle joystick 44 or the right joystick 45, so that the through hole 64 is connected to the different No. 3 air outlet pipe 63 of the left three-way valve body 57, thereby changing the direction of the air path. When the left joystick 43, the middle joystick 44 and the right joystick 45 move to a certain position to the right, the middle joystick 44 and the left joystick 43 can be plugged into the right transmission cylinder 62, while the right joystick 43 is not plugged into the left transmission cylinder 59. At this time, if the middle joystick 44 or the left joystick 43 enters the upper right gear position 50 or the lower right gear position 51, the right valve core body 61 will rotate following the swing of the middle joystick 44 or the left joystick 43, so that the through hole 64 is connected to the different No. 3 air outlet pipe 63 of the right three-way valve body 60, thereby changing the direction of the air path.

[0044] The linkage mechanism includes a No. 1 hydraulic cylinder 66, a No. 2 hydraulic cylinder 67, a No. 3 hydraulic cylinder 68, a No. 4 hydraulic cylinder 69, a left transmission housing 70, a middle transmission housing 71, and a right transmission housing 72. The right part of the left control box 40, the left part of the middle control box 41, the right part of the middle control box 41, and the left part of the right control box 42 are successively fixed with the No. 1 hydraulic cylinder 66, the No. 2 hydraulic cylinder 67, the No. 3 hydraulic cylinder 68, and the No. 4 hydraulic cylinder 69 extending in the left and right directions. The left end of the piston of the No. 1 hydraulic cylinder 66 is fixed with the left transmission housing 70, the piston of the No. 2 hydraulic cylinder 67 and the piston of the No. 3 hydraulic cylinder 68 are fixed with the middle transmission housing 71, and the right end of the piston of the No. 3 hydraulic cylinder 68 is fixed with the right transmission housing 72. The left joystick 43, the middle joystick 44, and the right joystick 45 The left operating lever 43, the middle operating lever 44 and the right operating lever 45 are respectively connected with the left transmission housing 70, the middle transmission housing 71 and the right transmission housing 72 with a gap. The left operating lever 43, the middle operating lever 44 and the right operating lever 45 can move up and down in the left transmission housing 70, the middle transmission housing 71 and the right transmission housing 72 respectively. When the left operating lever 43, the middle operating lever 44 and the right operating lever 45 move left and right, they can respectively drive the left transmission housing 70, the middle transmission housing 71 and the right transmission housing 72 to move synchronously. The No. 1 hydraulic cylinder 66 is connected with the No. 2 hydraulic cylinder 67 through a hydraulic pipeline and stores hydraulic oil together. The No. 3 hydraulic cylinder 68 and the No. 4 hydraulic cylinder 69 are connected with each other through a hydraulic pipeline and store hydraulic oil together. The return mechanism includes a support seat 73, a support plate 74 and a spring 75. The left operating lever 43, the middle operating lever 44 and the right operating lever 45 are respectively connected with each other through a hydraulic pipeline and store hydraulic oil together. The left and right parts of the box 40, the left and right parts of the central control box 41, and the left and right parts of the right control box 42 are respectively fixed with support seats 73, and the front parts of each of the support seats 73 are rotatably connected with support plates 74, and the left and right parts of the left joystick 43, the left and right parts of the central joystick 44, and the left and right parts of the right joystick 45 are respectively slidably connected to the support plates 74, and springs 75 are fixed between the left and right parts of the left joystick 43, the left and right parts of the central joystick 44, and the left and right parts of the right joystick 45, respectively, and the support plates 74 slidably connected thereto are fixed, and the left joystick 43, the central joystick 44, and the right joystick 45 always have a tendency to approach the neutral gear position 49 under the elastic force of the spring 75, and the limiting mechanism includes a light rod 76, a lower connecting member 77, an upper connecting member 78, and a tension spring 79. 9. Straight groove 80. A light rod 76 extending in the left and right directions is fixed to the bottom of the left control box 40, the bottom of the middle control box 41 and the bottom of the right control box 42 respectively. A lower connecting piece 77 is inserted in the gap of the light rod 76. The lower connecting piece 77 can slide left and right and swing forward and backward along the light rod 76. The lower connecting piece 77 is connected to the upper connecting piece 78 by sliding up and down. A tension spring 79 is fixed between the lower connecting piece 77 and the upper connecting piece 78. The upper connecting piece 78 and the lower connecting piece 77 have a tendency to approach each other under the elastic tension of the tension spring 79. Straight grooves 80 extending in the front and back directions are fixed to the bottom of the left joystick 43, the middle joystick 44 and the right joystick 45 respectively. The straight groove 80 extends to the front and back sides of the virtual rotation axis of the support plate 74.The upper connecting member 78 is inserted into the straight groove 80 with a gap, and can move forward and backward along the straight groove 80. When the straight groove 80 follows the left joystick 43, the middle joystick 44 or the right joystick 45 to swing up and down, it can tilt forward and backward, so that under the elastic repulsive force of the tension spring 79, the upper connecting member 78 moves to the bottom of the tilt of the straight groove 80, thereby limiting the tilt state of the straight groove 80.

[0045] Further, when any one of the left joystick 43, the middle joystick 44 and the right joystick 45 moves left and right, the corresponding pistons can be moved synchronously through the left transmission housing 70, the middle transmission housing 71 and the right transmission housing 72, so that the other pistons can move left and right in the same direction through hydraulic transmission, thereby driving the other two of the left joystick 43, the middle joystick 44 and the right joystick 45 to move left and right in the same direction. The elastic tension of the tension spring 79 can limit the tilt state of the straight groove 80, that is, the left joystick 43, the middle joystick 44 and the right joystick 45 can be limited in the groove 52 of the corresponding gear position.

[0046] The side wall of the main upper air intake pipe 33 is fixedly connected to a secondary upper air intake pipe 81, and the side wall of the main lower air intake pipe 34 is fixedly connected to a secondary lower air intake pipe 82. The secondary upper air intake pipe 81 and the secondary lower air intake pipe 82 are respectively connected to the external pneumatic system via the secondary one-way valve 83, and the main upper air intake pipe 33 and the main lower air intake pipe 34 are respectively connected to the external pneumatic system via the main one-way valve 84. The secondary one-way valve 83 only allows compressed air to enter the pneumatic motor through the respective secondary upper air intake pipe 81 or the secondary lower air intake pipe 82, and the main one-way valve 84 only allows compressed air to enter the pneumatic motor through the respective main upper air intake pipe 33 or the main lower air intake pipe 34.

[0047] Furthermore, during normal use, compressed air is introduced into the main upper air inlet pipe 33 and the main lower air inlet pipe 34 to realize the forward and reverse rotation of the pneumatic motor. When the damper 2 needs to be fully opened for some reason (such as emergency evacuation), air can be introduced into the auxiliary upper air inlet pipe 81 or the auxiliary lower air inlet pipe 82 through the pneumatic system, thereby realizing the control of the dampers 2 on the left and right parts of the channel 1, and realizing simultaneous opening and closing.

[0048] The above is a preferred embodiment of the present invention. For ordinary technicians in this field, according to the teachings of the present invention, without departing from the principles and spirit of the present invention, changes, modifications, substitutions and variations made to the implementation methods are still within the scope of protection of the present invention.

Claims

1. A mine air door locking device, comprising a channel (1), the channel (1) passing through from left to right, and each of the left and right parts is equipped with an air door (2) that can be opened and closed, the air door (2) comprising a door frame (3), an upper door plate (4), a lower door plate (5) and a sealing mechanism, the door frame (3) is groove-shaped and fixed to the inner wall of the channel (1), the front and rear ends of the bottom of the upper door plate (4) are each fixed with a horizontal and coaxial upper support shaft (7), the front and rear ends of the upper part of the lower door plate (5) are each fixed with a horizontal and coaxial lower support shaft (8), the upper support shaft (7) and the lower support shaft (8) are respectively plugged with the door frame (3) with a gap, and can slide up and down and rotate along the door frame (3), the upper part of the channel (1) is equipped with an upper push-pull mechanism along the left and right directions, and the bottom part is equipped with a lower push-pull mechanism along the left and right directions, characterized in that: The upper push-pull mechanism is hinged to the upper part of the upper door panel (4) to push the upper door panel (4) to the left and right, thereby causing the upper support shaft (7) to move up and down along the door frame (3); the lower push-pull mechanism is hinged to the bottom of the lower door panel (5) to push the lower door panel (5) to the left and right, thereby causing the lower support shaft (8) to move up and down along the door frame (3); the upper door panel (4) and the lower door panel (5) can be closed and unfolded with each other under the action of the upper push-pull mechanism and the lower push-pull mechanism; the upper door panel (4) and the lower door panel (5) can be closed and unfolded with each other; the upper door panel (4) and the lower door panel (5) can be opened and closed ... lower door panel (5) and the lower door panel (5) can be opened and closed with each other; the upper door panel (4) and the lower door panel (5) can be opened and closed with each other; the lower door panel (5) and the lower door panel (5) can be opened and closed with each other; the upper door panel (4) and the lower door panel (5) can be opened and closed with each other; the lower door panel (5) and the lower door panel (5) A sealing mechanism is installed between the panels (5); the upper door panel (4) is fixed with a proximity switch (11) for sensing the lower door panel (5); the left and right parts of the upper door panel (4) are also fixed with a warning light (12) and a buzzer (13); when the upper door panel (4) and the lower door panel (5) are separated to a certain position, the proximity switch (11) of the upper door panel (4) is actuated so that the warning light (12) and the buzzer (13) work; the proximity switch (11), the warning light (12) and the buzzer (13) are connected to an external power supply.

2. A mine air door locking device according to claim 1, characterized in that: The sealing mechanism comprises an elastic sac (14), the elastic sac (14) being fixed to the bottom end of the upper door panel (4) along the front-rear direction, and the elastic sac (14) being filled with a non-flammable and non-explosive gas medium or liquid medium.

3. A mine air door locking device according to claim 2, characterized in that: The elastic sac (14) is fixedly connected to a connection nozzle (15), the elastic sac (14) is filled with water, the channel (1) is fixedly provided with an electric stop valve (16), the electric stop valve (16) is controlled by an external power supply, the connection nozzle (15) is connected to the water outlet of the electric stop valve (16) via a surplus hose, the water inlet of the electric stop valve (16) is connected to an external fire water supply system, a cavity (17) is provided at the bottom of the upper door panel (4), a rubber plug (18) is fixedly sealed at the bottom of the cavity (17), and a horizontal lifting seat (19) is slidably connected to the bottom of the lifting seat (19). A plurality of vertical puncture needles (20) are fixed at the end, and the puncture needles (20) are sealed and slidably connected to the rubber plug (18) up and down. A vertical double-acting cylinder (21) is fixed to the upper part of the cavity (17). The piston rod of the double-acting cylinder (21) is fixed to the top of the lifting seat (19). The two air inlets of the double-acting cylinder (21) are connected to the external pneumatic system. When the double-acting cylinder (21) retracts the piston rod, it can drive the lifting seat (19) to move up and down along the cavity (17). When the lifting seat (19) moves downward to a certain position, the puncture needles (20) can penetrate and puncture the upper and lower parts of the elastic capsule (14).

4. A mine air door locking device according to claim 1, characterized in that: The upper push-pull mechanism and the lower push-pull mechanism respectively comprise a rotation drive mechanism, the upper push-pull mechanism comprising an upper sliding seat (23) and an upper screw rod (24), the upper portion of the channel (1) being slidably connected to a horizontal upper sliding seat (23) in the left-right direction, the front and rear portions of the upper sliding seat (23) being threadedly connected to an upper screw rod (24) extending in the left-right direction, the upper screw rod (24) being rotatably connected to the door frame (3) and the channel (1), the front and rear portions of the upper sliding seat (23) being fixed with a horizontal and coaxial upper hinge shaft (25), the upper hinge shaft (25) being connected to the upper door panel (4) ) are hinged to the left and right at the top, the lower push-pull mechanism comprises a lower sliding seat (26) and a bidirectional screw rod (27), the bottom of the channel (1) is slidably connected to the left and right with a horizontal lower sliding seat (26), the lower sliding seats (26) on the left and right sides of the door frame (3) form a group, the front and rear parts of the two groups of lower sliding seats (26) are respectively threadedly connected to a bidirectional screw rod (27) extending in the left and right directions, the bidirectional screw rod (27) is rotatably connected to the door frame (3) and the channel (1), and the upper screw rod (24) and the bidirectional screw rod (27) are respectively driven to rotate by the rotary drive mechanism.

5. A mine air door locking device according to claim 4, characterized in that: The rotary drive mechanism comprises a box (28), a No. 1 transmission shaft (29), a No. 2 transmission shaft (30), and a pneumatic motor. The upper and lower parts of the channel (1) are each fixed with a box (28). The front and rear parts of the box (28) are each rotatably connected to a No. 1 transmission shaft (29) extending in the left and right directions. The No. 1 transmission shafts (29) of the upper push-pull mechanism are connected to the upper screw rods (24) through gear meshing. The No. 1 transmission shafts (29) of the lower push-pull mechanism are connected to the bidirectional screw rods (27) through gear meshing. The box (28) ) The left and right parts are each rotatably connected to a No. 2 transmission shaft (30) extending in the front-to-back direction, and the front and rear parts of each No. 2 transmission shaft (30) are respectively connected to the No. 1 transmission shaft (29) of the front and rear parts of the box body (28) through bevel gear meshing for transmission, and the left and right parts of the box body (28) are each fixed with an air motor, and the output shaft (36) of the air motor is connected to each No. 2 transmission shaft (30) through bevel gear meshing for transmission, and the air motor is connected to an external pneumatic system, and the air motor can rotate forward and reverse when compressed air in different directions is passed.

6. A mine air door locking device according to claim 5, characterized in that: The pneumatic motor comprises a housing (32), a main upper air inlet pipe (33), a main lower air inlet pipe (34), an air outlet pipe (35), an output shaft (36), and blades (37). The upper portion of the housing (32) is fixedly connected to the main upper air inlet pipe (33), and the lower portion is fixedly connected to the main lower air inlet pipe (34). The middle portion of the housing (32) is fixedly connected to the air outlet pipe (35). The housing (32) is sealed and rotatably connected to the output shaft (36) in the left-right direction. A plurality of blades (37) are fixedly connected to the circumference of the output shaft (36) at equal angles. Each of the blades (37) is respectively inserted into the housing (32) with a gap. The main upper air inlet pipe (33) corresponds to the blades (37) on the upper side of the output shaft (36), and the main lower air inlet pipe (34) corresponds to the blades (37) on the lower side of the output shaft (36).

7. A mine air door locking device according to claim 6, characterized in that: The passage (1) is equipped with an upper pneumatic control mechanism (38) and a lower pneumatic control mechanism (39). The upper pneumatic control mechanism (38) and the lower pneumatic control mechanism (39) respectively comprise a left control box (40), a middle control box (41) and a right control box (42). A left joystick (43), a middle joystick (44) and a right joystick (45) are installed in the left control box (40), the middle control box (41) and the right control box (42) in sequence. A linkage mechanism is installed between the left joystick (43) and the middle joystick (44) and between the middle joystick (44) and the right joystick (45). The right control box (42) is provided with three gear positions, namely, upper left, lower left and middle. The middle control box (41) is provided with three gear positions, namely, upper left, lower left and middle. The left control box (40) is provided with three gear positions, namely, upper right, lower right and middle position. The upper left, lower left, upper right and lower right gear positions are respectively provided with horizontal grooves (52) approaching the middle gear position (49). A return-to-center mechanism and a limit mechanism are respectively installed between the left control box (40) and the left joystick (43), between the middle control box (41) and the middle joystick (44), and between the right control box (42) and the right joystick (45). Under the action of the return-to-center mechanism, the left joystick (43), the middle joystick (44) and the right joystick (45) have a tendency to move left and right and approach the middle gear position (49). The middle joystick (44) and the right joystick (45) are respectively provided with a return-to-center mechanism and a limit mechanism. Under the action of the return mechanism and the limit mechanism, the groove (52) has a tendency to be limited to the upper left gear position (47) and the lower left gear position (48). Under the action of the return mechanism and the limit mechanism, the middle joystick (44) and the left joystick (43) have a tendency to be limited to the upper right gear position (50) and the lower right gear position (51). The left joystick (43), the middle joystick (44) and the right joystick (45) can achieve synchronous movement of left and right through a linkage mechanism. The left part of the middle control box (41) and the left part of the right control box (42) are respectively fixed with a left-rotating three-way valve. The right part of the middle control box (41) and the right part of the left control box (40) are respectively fixed with a right-rotating three-way valve. The right joystick ( When one of the right joystick (45) or the middle joystick (44) moves to the left to a certain position, it can dock with the valve core of the left-rotating three-way valve. When the right joystick (45) or the middle joystick (44) docks with the valve core of the left-rotating three-way valve and swings up and down, it can cause the valve core to rotate and switch the direction of the gas path. When one of the left joystick (43) or the middle joystick (44) moves to the right to a certain position, it can dock with the valve core of the right-rotating three-way valve. When the left joystick (43) or the middle joystick (44) docks with the valve core of the right-rotating three-way valve and swings up and down, it can cause the valve core to rotate and switch the direction of the gas path. The air inlet end of the left-rotating three-way valve and the air inlet end of the right-rotating three-way valve are respectively connected to an external pneumatic system.The A outlet ends of the two left-rotating three-way valves in the upper pneumatic control mechanism (38) are simultaneously connected to the main upper air inlet pipe (33) of the pneumatic motor of the right upper door plate (4) of the control channel (1) through a pipeline, the B outlet ends of the two left-rotating three-way valves in the upper pneumatic control mechanism (38) are simultaneously connected to the main lower air inlet pipe (34) of the pneumatic motor of the right upper door plate (4) of the control channel (1) through a pipeline, the A outlet ends of the two left-rotating three-way valves in the lower pneumatic control mechanism (39) are simultaneously connected to the main upper air inlet pipe (33) of the pneumatic motor of the right lower door plate (5) of the control channel (1) through a pipeline, and the B outlet ends of the two left-rotating three-way valves in the lower pneumatic control mechanism (39) are simultaneously connected to the main lower air inlet pipe (34) of the pneumatic motor of the right lower door plate (5) of the control channel (1) through a pipeline, The A outlet ends of the two right-rotating three-way valves in the upper pneumatic control mechanism (38) are simultaneously connected to the main upper air inlet pipe (33) of the pneumatic motor of the left upper door plate (4) of the control channel (1) through a pipe, and the B outlet ends of the two right-rotating three-way valves in the upper pneumatic control mechanism (38) are simultaneously connected to the main lower air inlet pipe (34) of the pneumatic motor of the left upper door plate (4) of the control channel (1) through a pipe. The A outlet ends of the two right-rotating three-way valves in the lower pneumatic control mechanism (39) are simultaneously connected to the main upper air inlet pipe (33) of the pneumatic motor of the left lower door plate (5) of the control channel (1) through a pipe, and the B outlet ends of the two right-rotating three-way valves in the lower pneumatic control mechanism (39) are simultaneously connected to the main lower air inlet pipe (34) of the pneumatic motor of the left lower door plate (5) of the control channel (1) through a pipe.

8. A mine air door locking device according to claim 7, characterized in that: The left-rotating three-way valve comprises a left three-way valve body (57), a left valve core body (58), and a left transmission cylinder (59); the right-rotating three-way valve comprises a right three-way valve body (60), a right valve core body (61), and a right transmission cylinder (62); the left three-way valve body (57) is fixed to the left part of the central control box (41) and the left part of the right control box (42), respectively; the right three-way valve body (60) is fixed to the right part of the central control box (41) and the right part of the left control box (40), respectively; the left valve core body (58) is rotatably connected to the left three-way valve body (57), and the right three-way valve body (60) is rotatably connected to the right three-way valve body (60). The left three-way valve body (57) and the right three-way valve body (60) are respectively fixedly connected to a No. 3 air outlet pipe (63). The left valve body (58) and the right valve body (61) are respectively radially penetrated by a through hole (64). The No. 3 air outlet pipe (63) at the upper part of the left three-way valve body (57) and the No. 3 air outlet pipe (63) at the upper part of the right three-way valve body (60) are the A air outlet end. The No. 3 air outlet pipe (63) at the lower part of the left three-way valve body (57) and the No. 3 air outlet pipe (63) at the lower part of the right three-way valve body (60) are respectively fixedly connected to a No. 3 air outlet pipe (63) at the upper part of the right three-way valve body (60). 3) are both B outlet ends, the left part of the left valve core body (58) and the right part of the right valve core body (61) are coaxially fixedly connected to a No. 3 air inlet pipe (65), and the No. 3 air inlet pipe (65) is the air inlet end of the left-rotating three-way valve or the right-rotating three-way valve where they are located. When the left valve core body (58) and the right valve core body (61) are rotated forward and backward to a certain angle, the through hole (64) can be aligned and connected with any No. 3 air outlet pipe (63). The right part of the left valve core body (58) is coaxially fixed with a left transmission cylinder (59), and the left part of the right valve core body (61) is coaxially fixed with a left transmission cylinder (59). A right transmission cylinder (62) is provided. The inner wall of the left transmission cylinder (59) and the inner wall of the right transmission cylinder (62) are in the shape of a regular quadrangular prism of the same size and coaxial. The left operating rod (43), the middle operating rod (44) and the right operating rod (45) are both in the shape of a regular quadrangular prism matching the inner wall of the left transmission cylinder (59) or the inner wall of the right transmission cylinder (62). The right part of the left operating rod (43) and the right part of the middle operating rod (44) can be plugged into the right transmission cylinder (62). The left part of the right operating rod (45) and the left part of the middle operating rod (44) can be plugged into the left transmission cylinder (59).

9. A mine air door locking device according to claim 8, characterized in that: The linkage mechanism comprises a No. 1 hydraulic cylinder (66), a No. 2 hydraulic cylinder (67), a No. 3 hydraulic cylinder (68), a No. 4 hydraulic cylinder (69), a left transmission housing (70), a middle transmission housing (71), and a right transmission housing (72); the No. 1 hydraulic cylinder (66), the No. 2 hydraulic cylinder (67), the No. 3 hydraulic cylinder (68), and the No. 4 hydraulic cylinder (69) extending in the left-right direction are fixed in sequence to the right part of the left control box (40), the left part of the middle control box (41), the right part of the middle control box (41), and the left part of the right control box (42); the left end of the piston of the No. 1 hydraulic cylinder (66) is fixed to the left transmission housing (70); the piston of the No. 2 hydraulic cylinder (67) and the piston of the No. 3 hydraulic cylinder (68) are fixed to the middle transmission housing (71) together; A right transmission housing (72) is fixed to the right end of the piston of the No. 3 hydraulic cylinder (68); the left operating rod (43), the middle operating rod (44) and the right operating rod (45) are respectively plugged into the left transmission housing (70), the middle transmission housing (71) and the right transmission housing (72) with a gap; the left operating rod (43), the middle operating rod (44) and the right operating rod (45) can respectively move up and down in the left transmission housing (70), the middle transmission housing (71) and the right transmission housing (72); when the left operating rod (43), the middle operating rod (44) and the right operating rod (45) move left and right, they can respectively drive the left transmission housing (70), the middle transmission housing (71) and the right transmission housing (72) to move synchronously; the No. 1 hydraulic cylinder ( The hydraulic cylinder (66) is connected to the No. 2 hydraulic cylinder (67) through a hydraulic pipeline and stores hydraulic oil together. The No. 3 hydraulic cylinder (68) and the No. 4 hydraulic cylinder (69) are connected to each other through a hydraulic pipeline and store hydraulic oil together. The return mechanism includes a support seat (73), a support plate (74), and a spring (75). The left and right parts of the left control box (40), the left and right parts of the middle control box (41), and the left and right parts of the right control box (42) are respectively fixed with support seats (73). The front part of each support seat (73) is rotatably connected to the support plate (74). The left and right parts of the left joystick (43), the left and right parts of the middle joystick (44), and the left and right parts of the right joystick (45) are respectively connected to the support plate (74) in a left-right sliding manner. A spring (75) is fixed between the left and right parts of the rod (43), the left and right parts of the middle operating rod (44) and the left and right parts of the right operating rod (45) and the support plates (74) respectively connected thereto in a sliding manner. The left operating rod (43), the middle operating rod (44) and the right operating rod (45) always have a tendency to approach the middle gear position (49) under the elastic force of the spring (75). The limiting mechanism comprises a light rod (76), a lower connecting piece (77), an upper connecting piece (78), a tension spring (79) and a straight groove (80). The bottom of the left control box (40), the bottom of the middle control box (41) and the bottom of the right control box (42) are respectively fixed with light rods (76) extending in the left and right directions. The lower connecting piece (77) is inserted into the gap of the light rod (76).The lower connecting member (77) can slide left and right and swing forward and backward along the light rod (76); the lower connecting member (77) is slidably connected to the upper connecting member (78) in an up-and-down manner; a tension spring (79) is fixed between the lower connecting member (77) and the upper connecting member (78); the upper connecting member (78) and the lower connecting member (77) have a tendency to approach each other under the elastic tension of the tension spring (79); and the bottoms of the left operating rod (43), the middle operating rod (44) and the right operating rod (45) are respectively fixed with straight grooves (88) extending in the front-to-back direction. 0), the straight groove (80) extends to the front and rear sides of the virtual rotation axis of the support plate (74), the upper connecting member (78) is inserted into the straight groove (80) with a gap, and can move forward and backward along the straight groove (80), and the straight groove (80) can tilt forward and backward when following the left joystick (43), the middle joystick (44) or the right joystick (45) to swing up and down, so that under the elastic repulsive force of the tension spring (79), the upper connecting member (78) moves to the bottom of the tilt of the straight groove (80), thereby limiting the tilt state of the straight groove (80).

10. A mine air door locking device according to any one of claims 6 to 9, characterized in that: The side wall of the main upper air intake pipe (33) is fixedly connected to a secondary upper air intake pipe (81), and the side wall of the main lower air intake pipe (34) is fixedly connected to a secondary lower air intake pipe (82). The secondary upper air intake pipe (81) and the secondary lower air intake pipe (82) are respectively connected to an external pneumatic system via a secondary check valve (83). The main upper air intake pipe (33) and the main lower air intake pipe (34) are respectively connected to an external pneumatic system via a main check valve (84). The secondary check valve (83) only allows compressed air to enter the pneumatic motor through the secondary upper air intake pipe (81) or the secondary lower air intake pipe (82) where the compressed air is located, and the main check valve (84) only allows compressed air to enter the pneumatic motor through the main upper air intake pipe (33) or the main lower air intake pipe (34) where the compressed air is located.

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