An automatic switchable explosion door and control method

Abstract

The application discloses an automatic opening and closing explosion-proof door which comprises a door frame (1) and a door body (2), and is characterized in that the automatic opening and closing explosion-proof door further comprises an explosion-proof control system, an opening and closing executing mechanism, a locking executing mechanism and an anti-collision mechanism; the explosion-proof control system comprises an explosion-proof PLC control box (13) and a control box (11), the explosion-proof PLC control box (13) is fixedly installed on the ground beside the door frame (1), and the explosion-proof PLC control box (13) is internally provided with an explosion-proof PLC control device; the control box (11) is provided with a manual / automatic switching button, a manual operation button and an emergency stop button; and the explosion-proof PLC control box (13) and the control box (11) are connected together through a wired or wireless network; the automatic opening and closing explosion-proof door can automatically receive signals of AGV and other logistics equipment, so that the automation degree of a working process is realized; and the anti-collision mechanism can effectively improve the safety of the working process.

Description

Technical Field

[0001] This invention relates to an explosion-proof door, and more particularly to an automatically opening and closing explosion-proof door and its control method. Background Technology

[0002] In the assembly process of aerospace products containing pyrotechnics, blast-resistant doors are required at the entrances of buildings or rooms that need protection, such as assembly rooms and testing rooms, to protect against shock waves, debris, and flames generated by explosions. Common blast-resistant doors are typically opened and closed manually. However, with the development of digital and automated assembly technologies, automated logistics technologies are being increasingly widely used in the assembly process of aerospace products. Therefore, manually operated blast-resistant doors are no longer sufficient to meet the requirements. It is necessary to design blast-resistant doors that can interact with the logistics system and open and close automatically, incorporating automated logistics methods. Summary of the Invention

[0003] The purpose of this invention is to provide an automatically opening and closing explosion-proof door and its control method. Based on the needs of automated logistics, this invention is designed to automate the existing explosion-proof door, enabling communication with logistics equipment such as AGVs, and realizing the automatic opening, closing and locking of the explosion-proof door.

[0004] An explosion-proof door with automatic opening and closing includes a door frame 1 and a door body 2, characterized in that it further includes an explosion-proof control system, a switching actuator, a locking actuator, and an anti-collision mechanism;

[0005] The explosion-proof control system includes an explosion-proof PLC control box 13 and a control box 11. The explosion-proof PLC control box 13 is fixedly installed on the ground next to the door frame 1. The explosion-proof PLC control box 13 is equipped with an explosion-proof PLC control device. The control box 11 is equipped with a manual / automatic switching button, a manual operation button, and an emergency stop button. The explosion-proof PLC control box 13 and the control box 11 are connected together via a wired or wireless network.

[0006] The switch actuator includes an explosion-proof servo motor B7, a clutch 8, and a crank arm 9. The explosion-proof servo motor B7 is installed on the explosion-proof wall 20 on the rear side of the door 2. One end of the crank arm 9 is fixedly installed on the explosion-proof wall 20, and the other end is installed on the door 2. The explosion-proof servo motor B7 is connected to the crank arm 9. The explosion-proof servo motor B7 pushes the crank arm 9 to move, thereby opening and closing the door 2.

[0007] The locking actuator includes an explosion-proof servo motor A6, a reducer 17, a lead screw 5, a door latch 4, and a limit sensor 3. The explosion-proof servo motor A6 is installed on the rear surface of the explosion-proof door body 20. The explosion-proof servo motor A6 is connected to the reducer 17, the reducer 17 is connected to the lead screw 5, the lead screw 5 is connected to the connecting rod 18, the connecting rod 18 is connected to the door latch 4, and the limit sensor 3 is on the door frame 1. The explosion-proof servo motor A6 drives the insertion and removal of the door latch through the lead screw 5 and the connecting rod 18, and the limit switch 3 senses whether the door latch 4 is in place.

[0008] The anti-collision mechanism includes a photoelectric sensor 15 and an anti-collision strip 12; the photoelectric sensor 15 is installed on the door frame 1 on the outside of the door, and the anti-collision strip 12 is attached to the edge of the front surface of the door body 2.

[0009] An optical communication station 14 is installed on the explosion-proof wall 20 behind the door 2. The optical communication station 14 can transmit the arrival signal of AGV16 to the explosion-proof control system. Under the control of the explosion-proof control system, an opening signal is sent to the locking actuator. The locking actuator drives the door latch 4 to move. After the door latch 4 is opened to the position, the mechanism stops moving.

[0010] A control method for an automatically opening and closing explosion-proof door, utilizing the automatically opening and closing explosion-proof door to enable the entry and exit of experimental materials, characterized by the following specific steps:

[0011] Step 1: During operation, when AGV16 needs to enter or exit through gate 2, optical communication station 14 transmits the position signal of AGV16 near gate 2 to the explosion-proof control system. The explosion-proof control system sends an opening signal to the locking actuator. The explosion-proof servo motor A6 of the locking actuator drives the latch 4 through reducer 17 and lead screw 5. After the latch 4 is opened to the correct position, the mechanism stops moving. Limit sensor 3 feeds back the position signal, and the switch actuator drives gate 2 to rotate, opening gate 2. After gate 2 is opened to the correct position, explosion-proof servo motor 7 feeds back the position signal to the explosion-proof control system.

[0012] Step 2: The explosion-proof control system sends the arrival signal back to the optical communication station 14. After receiving the signal that the gate 2 of the optical communication station 14 has been opened, the AGV continues to travel through.

[0013] Step 3: After the AGV passes through the gate 2, it communicates with the optical communication station 14. The optical communication station 14 feeds back the signal of the AGV 16 entering or leaving to the explosion-proof control system. The explosion-proof control system drives the gate 2 to close through the control switch actuator, and the locking mechanism latch 4 is inserted into place.

[0014] A control box 11 is installed on the outside of the explosion-proof door. The control box 11 is equipped with a manual / automatic switching button, a manual operation button, and an emergency stop button. When needed, the automatic and manual operation modes can be switched manually, and the explosion-proof door can be opened, closed, and stopped by manually pressing the buttons.

[0015] Beneficial effects of the present invention

[0016] This invention enables automatic opening and closing of explosion-proof doors by receiving signals from logistics equipment such as AGVs. During the opening and closing process, a servo motor provides high-precision feedback on the door's position, thereby increasing the automation of the operation. The added anti-collision mechanism effectively improves the safety of the operation. Attached Figure Description

[0017] Figure 1 1 is an internal view of the device of the present invention;

[0018] Figure 2 , is an external view of the device of the present invention;

[0019] Figure 3 This is a top view of the present invention;

[0020] Among them, 1—door frame, 2—door body, 3—limit sensor, 4—door latch, 5—lead screw, 6—explosion-proof servo motor, 7—explosion-proof servo motor, 8—clutch, 9—crank arm, 10—handwheel, 11—control box, 12—anti-collision strip, 13—explosion-proof PLC control box, 14—optical communication station, 15—photoelectric sensor, 16—AGV, 17—reducer, 18—connecting rod, 20—explosion-proof wall.

[0021] Note 1: AGVs and optical communication stations are signal sources and are not part of the invention. Detailed Implementation

[0022] An explosion-proof door with automatic opening and closing mechanism mainly includes a control system, a switching actuator, a locking actuator, and an anti-collision mechanism.

[0023] The PLC control system includes an explosion-proof PLC control box.

[0024] The switch actuator includes an explosion-proof servo motor, a clutch, and a crank arm. The explosion-proof drive motor is installed on the rear side of the explosion-proof door and is connected to the explosion-proof door via the crank arm.

[0025] The locking actuator includes an explosion-proof servo motor, a reducer, a latch, and a limit sensor.

[0026] The anti-collision mechanism includes a photoelectric sensor and anti-collision strips.

[0027] Specifically, the explosion-proof motor of the switch actuator is installed on the wall inside the door and connected to the explosion-proof door via a crank arm. The explosion-proof motor of the locking actuator is installed on the door body and drives the latch insertion and removal via a screw and connecting rod, with a limit switch sensing whether the latch is in position. The photoelectric sensor of the anti-collision mechanism is installed on the door frame outside the door. During operation, the optical communication station transmits the AGV's arrival signal to the control system. The control system sends an opening signal, the locking actuator drives the latch to move, and after the latch is fully open, the mechanism stops moving. The limit sensor feeds back the arrival signal, the switch actuator drives the explosion-proof door to rotate, and after the door is fully open, the servo motor feeds back the arrival signal. The control system feeds back the arrival signal to the optical communication station, and the AGV continues to move after receiving the signal. After the AGV passes through the explosion-proof door, it communicates with the optical communication station inside the room. The optical communication station feeds back the AGV's departure signal to the control system, which then controls the door to close and the locking mechanism's latch to engage. If a person or object is within the door frame during the closing process, the photoelectric sensor or anti-collision strip will send a feedback signal, and the switch control mechanism will stop operating. A push-button switch is installed on the outside of the explosion-proof door. By switching modes, it can be switched to manual operation mode, allowing manual operation of the explosion-proof door by pressing the button.

[0028] An automatic opening and closing explosion-proof door (with attachment) Figure 1 , attached Figure 2 It consists of a control system, a switch actuator, a locking actuator, and an anti-collision mechanism.

[0029] The explosion-proof servo motor 7 of the switch control mechanism is installed on the inner wall of the door and connected to the explosion-proof door body 2 via the crank arm 9. The explosion-proof servo motor 6 of the locking actuator is installed on the explosion-proof door body 2 and drives the insertion and removal of the door latch via the screw 5 and connecting rod. The limit switch 3 senses whether the door latch 4 is in position. The photoelectric sensor 15 of the anti-collision mechanism is installed on the outer door frame 1. During operation, the optical communication station 14 transmits the AGV 16's position signal to the control system. The control system issues an opening signal, the locking actuator drives the door latch 4 to move, and after the door latch 4 is fully opened, the mechanism stops moving. The limit sensor 3 feeds back the position signal, the switch actuator drives the explosion-proof door body 2 to rotate, and after the door body 2 is fully opened, the explosion-proof servo motor 7 feeds back the position signal. The control system feeds back the position signal to the optical communication station 14, and the AGV continues to move after receiving the signal. After passing through the explosion-proof door, the AGV communicates with the optical communication station 14 inside the room. The optical communication station 14 feeds back the signal of the AGV 16 leaving to the control system, which then controls the door 2 to close and the locking mechanism latch 4 to engage. During the door closing process, if a person or object is within the door frame, the photoelectric sensor 15 or the anti-collision strip 12 will send a signal, and the switch control mechanism will stop operating. A control box 11 is installed on the outside of the explosion-proof door, including a manual / automatic switch button, a manual operation button, and an emergency stop button. By switching modes, it can be switched to manual operation mode, and the explosion-proof door can be opened, closed, and stopped manually by pressing the buttons.

[0030] An AGV is an unmanned transport vehicle equipped with electromagnetic, optical, or other automatic guidance devices. It can travel along a predetermined path and has safety protection and cargo handling functions.

Claims

1. An automatically opening and closing explosion-proof door, comprising a door frame (1) and a door body (2), characterized in that, It also includes explosion-proof control systems, switch actuators, interlocking actuators, and anti-collision mechanisms; The explosion-proof control system includes an explosion-proof PLC control box (13) and a control box (11). The explosion-proof PLC control box (13) is fixedly installed on the ground next to the door frame (1). An explosion-proof PLC control device is installed inside the explosion-proof PLC control box (13). The control box (11) is equipped with a manual / automatic switching button, a manual operation button, and an emergency stop button. The explosion-proof PLC control box (13) and the control box (11) are connected together via a wired or wireless network. The switch actuator includes an explosion-proof servo motor B (7), a clutch (8), and a crank arm (9); the explosion-proof servo motor B (7) is installed on the explosion-proof wall (20) on the rear side of the door (2), one end of the crank arm (9) is fixedly installed on the explosion-proof wall (20), and the other end is installed on the door (2), and the explosion-proof servo motor B (7) is connected to the crank arm (9); the explosion-proof servo motor B (7) pushes the crank arm (9) to move, thereby opening and closing the door (2); The locking actuator includes an explosion-proof servo motor A (6), a reducer (17), a lead screw (5), a door latch (4), and a limit sensor (3). The explosion-proof servo motor A (6) is installed on the rear surface of the explosion-proof door body (20). The explosion-proof servo motor A (6) is connected to the reducer (17), the reducer (17) is connected to the lead screw (5), the lead screw (5) is connected to the connecting rod (18), the connecting rod (18) is connected to the door latch (4), and the limit sensor (3) is on the door frame (1). The explosion-proof servo motor A (6) drives the insertion and removal of the door latch through the lead screw (5) and the connecting rod (18), and senses whether the door latch (4) is in place through the limit switch (3). The anti-collision mechanism includes a photoelectric sensor (15) and an anti-collision strip (12); the photoelectric sensor (15) is installed on the door frame (1) on the outside of the door, and the anti-collision strip (12) is attached to the edge of the front surface of the door body (2).

2. The explosion-proof door with automatic opening and closing according to claim 1, characterized in that, An optical communication station (14) is provided on the explosion-proof wall (20) behind the door (2). The optical communication station (14) can transmit the AGV (16) arrival signal to the explosion-proof control system. Under the control of the explosion-proof control system, it sends an opening signal to the locking actuator. The locking actuator drives the door latch (4) to move. After the door latch (4) is opened to the position, the mechanism stops moving.

3. A control method for an automatically opening and closing explosion-proof door, utilizing the automatically opening and closing explosion-proof door as described in claim 2 to realize the entry and exit of experimental materials, characterized in that... The specific steps are as follows: Step 1: During operation, when the AGV (16) needs to enter or exit through the door (2), the optical communication station (14) transmits the position signal of the AGV (16) near the door (2) to the explosion-proof control system. The explosion-proof control system sends an opening signal to the locking actuator. The explosion-proof servo motor A (6) of the locking actuator drives the latch (4) to move through the reducer (17) and the lead screw (5). After the latch (4) is opened to the position, the mechanism stops moving. The limit sensor (3) feeds back the position signal, and the switch actuator drives the door (2) to rotate, and the door (2) opens. After the door (2) is opened to the position, the explosion-proof servo motor (7) feeds back the position signal to the explosion-proof control system. Step 2: The explosion-proof control system feeds back the arrival signal to the optical communication station (14). After receiving the signal that the door (2) of the optical communication station (14) has been opened, the AGV (16) continues to travel through. Step 3: After the AGV (16) passes through the door 2, it communicates with the optical communication station (14). The optical communication station (14) feeds back the signal of the AGV (16) entering or leaving to the explosion-proof control system. The explosion-proof control system drives the door (2) to close through the control switch actuator, and the locking mechanism latch (4) is inserted into place.

4. The control method for an automatically opening and closing explosion-proof door according to claim 3, characterized in that, A control box (11) is installed on the outside of the explosion-proof door. The control box (11) is equipped with a manual / automatic switching button, a manual operation button and an emergency stop button. When needed, the automatic and manual operation modes can be switched manually, and the explosion-proof door can be opened, closed and stopped by manually pressing the button.

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