Automatic door with self-locking motor

Abstract

The invention relates to the technical field of automatic doors, and discloses an automatic door with a self-locking motor, comprising a door frame; the fixed doors are symmetrically and fixedly mounted on the door frame; the movable doors are symmetrically arranged on the door frame in a sliding manner; the double-shaft motor is arranged on the door frame, a first output shaft and a second output shaft are arranged on the double-shaft motor, and a self-locking mechanism is arranged at the first output shaft; the driving mechanism is arranged on the door frame, the driving mechanism comprises a rotating shaft rotationally arranged on the door frame, a driving wheel fixed to the rotating shaft, a tail wheel arranged on the door frame, a synchronous belt arranged between the driving wheel and the tail wheel and a hanging wheel set arranged on the synchronous belt, the hanging wheel set is in rigid connection with the synchronous belt through a belt clamp, and the control mechanism is further included; when electronic elements such as an infrared sensor break down, the movement direction of the movable door can be changed without depending on an electronic control system, so that the movable door is opened reversely to release a clamped object, and personnel or objects are prevented from being continuously extruded.

Description

Technical Field

[0001] This invention relates to the field of automatic door technology, and more particularly to an automatic door with a self-locking motor. Background Technology

[0002] Automatic doors, as a highly efficient and intelligent access control device, are widely used in public places such as commercial buildings, medical facilities, and transportation hubs. They are generally composed of a door structure, a drive mechanism, a control unit, and a guide device. The main function of automatic doors is to realize the autonomous opening and closing of the door without manual operation, which greatly improves the passage efficiency, while effectively maintaining the isolation between indoor and outdoor environments and optimizing spatial comfort and management convenience.

[0003] In the safety operation mechanism of automatic doors, the application of self-locking motors is crucial. When the door needs to remain open or closed for a long time, such as when the door needs to be open for a long time during the handling of large goods, or when the door needs to be closed tightly after closing at night, the brake pads need to be mechanically locked to the output shaft of the motor through program control. This is to prevent the door from moving unexpectedly under the action of external forces (such as wind impact or accidental collision) or its own gravity, thus ensuring the stability of the door and guaranteeing passage safety.

[0004] An automatic door disclosed in CN109763738A includes a door body and a control system. The door body has a door frame, a door leaf disposed on the door frame, and a drive mechanism. The drive mechanism is used to drive the door leaf to move. The control system has a control host, a second microwave sensor electrically connected to the control host, and a first microwave sensor electrically connected to the second microwave sensor. The drive mechanism is electrically connected to the control host. The first microwave sensor and the second microwave sensor are used to sense a first sensing area and a second sensing area, respectively. The first microwave sensor outputs a first sensing signal. The second microwave sensor selectively outputs a second sensing signal or the received first sensing signal according to the operating mode of the automatic door. The control host outputs an opening signal according to the first sensing signal or the second sensing signal. The drive mechanism operates according to the opening signal to open the automatic door. Although the above technical solution can achieve the function of unidirectional sensing of the outside or inside of the door.

[0005] However, in existing technologies, although current automatic door systems are generally equipped with self-locking motors and use sensors to detect whether there are people or objects around the door, and then the program controls the motor to act to prevent pinching based on the detection results, certain safety hazards still exist. When the automatic door control system malfunctions, such as when the infrared sensor is falsely triggered, the mainboard program is disordered, or the remote control signal is interfered with, the system cannot accurately detect the actual situation around the door, including whether there are people passing through the door or whether there are hard objects near the door. In this case, the door may still perform the closing operation, resulting in crushing injuries to people passing through the door or damage to items. Therefore, existing automatic doors rely on electronic control systems to judge and respond to anti-pinch scenarios. Although according to the preset safety logic, the motor should be immediately triggered to lock when a pinching risk is detected to avoid injury, due to the malfunction of the control system itself, it may not be able to trigger the motor locking function in a timely and accurate manner, thus causing safety accidents such as pinching injuries to people and damage to items. Summary of the Invention

[0006] The purpose of this invention is to provide an automatic door with a self-locking motor, in order to solve the problem mentioned in the background art that existing automatic doors mainly rely on electronic control systems to achieve anti-pinch, and cannot accurately detect the conditions around the door when the control system malfunctions, thus failing to trigger the motor to lock in time.

[0007] The present invention provides an automatic door with a self-locking motor, which adopts the following technical solution: An automatic door with a self-locking motor, comprising: Door frame; Fixed doors, symmetrically fixedly installed on the door frame; The sliding door is symmetrically mounted on the door frame. A dual-axis motor is mounted on the door frame. The dual-axis motor has a first output shaft and a second output shaft. A self-locking mechanism is provided at the first output shaft. A drive mechanism, mounted on the gantry frame, includes a rotating shaft mounted on the gantry frame, a drive wheel fixed on the shaft, a tail wheel mounted on the gantry frame, a timing belt between the drive wheel and the tail wheel, and a sheave assembly mounted on the timing belt. The sheave assembly is rigidly connected to the timing belt via a belt clamp. The mechanism also includes: A control mechanism is located at the second output shaft. The control mechanism includes a connecting shaft on the surface of the second output shaft, a gear one fixed on the connecting shaft, and a gear two fixed on the rotating shaft. Gear two meshes with gear one. A crown tooth one is also fixed on the connecting shaft. A bushing is rotatably sleeved on the surface of the connecting shaft. Gear three and crown tooth two are fixed on the bushing. Gear four meshes between crown tooth two and crown tooth one. A gear five that cooperates with gear three is also fixed on the rotating shaft.

[0008] Furthermore, the connecting shaft is slidably sleeved on the surface of the second output shaft, and an abutting mechanism is provided between the second output shaft and the connecting shaft. The abutting mechanism includes an abutting block one fixed on the second output shaft, an abutting block two fixed on the connecting shaft, and an adjusting member provided between the abutting block one and the abutting block two. The abutting block two and the abutting block one are both provided with a spiral surface on the side that is close to each other, and the spiral surfaces fit together.

[0009] Furthermore, the adjusting components are equidistantly distributed along the surfaces of the first and second abutment blocks. The adjusting components include a sleeve hinged to the first abutment block, a rod movably inserted into the sleeve, and a spring provided on the rod. One end of the rod is hinged to the second abutment block.

[0010] Furthermore, the abutment mechanism also includes a baffle fixed to the end of the second output shaft, a limiting plate fixed to the end of the connecting shaft, and a second spring provided on the second output shaft, with the two ends of the second spring fixed to the baffle and the limiting plate, respectively.

[0011] Furthermore, a bracket is rotatably sleeved on the connecting shaft, and a central shaft is fixed at the center of the gear four, with the central shaft rotatably connected to the bracket.

[0012] Furthermore, the door frame is provided with a stop mechanism, which includes a base fixed inside the door frame and a rack slidably connected to the base. The rack and gear are three-phase compatible. One end of the rack is fixed with a crossbar, and a vertical bar is fixed on the base. The vertical bar has a groove for engaging the crossbar.

[0013] Furthermore, a slider is fixed on the rack, and a groove is provided on the base for the slider to slide in. A spring is fixed between the groove and the slider.

[0014] Furthermore, the self-locking mechanism includes a friction disc fixed on the first output shaft, a housing fixed on the dual-axis motor, and stop clamps symmetrically arranged inside the housing. Each of the two sets of stop clamps has a notch on the side closest to each other that matches the outer edge of the friction disc. A friction block is provided in the notch. Hydraulic rods are symmetrically installed inside the housing, and the output ends of the two sets of hydraulic rods are respectively fixedly connected to the corresponding stop clamps.

[0015] Furthermore, a return spring is symmetrically fixed between the two sets of stop clamps.

[0016] Furthermore, the door frame is also equipped with a controller and a backup power supply.

[0017] The beneficial effects of this invention are: 1. By setting up a control mechanism and abutment mechanism, when electronic components such as infrared sensors malfunction, the transmission direction can be automatically switched without relying on the electronic control system, solely through the cooperation of the control mechanism and abutment mechanism. By changing the movement direction of the sliding door, it opens in the opposite direction to release the clamped object, preventing people or objects from being continuously squeezed. At the same time, the abutment mechanism uses the guiding effect of the spiral surface to convert the rotational torque into axial thrust, pushing the connecting shaft to slide and achieve gear switching. With the elastic effect of spring two, it can automatically reset after the fault is cleared, restoring the normal operation of the automatic door. By using mechanical triggering and switching methods, the defects of single-point failure in the existing electronic control system can be effectively compensated, thereby greatly improving the safety protection capability of the automatic door in the event of a fault.

[0018] 2. By setting up a stop mechanism, the meshing transmission between the rack and gear three in the stop mechanism can drive the rack to slide while gear three is switching, so that the crossbar is locked into the groove to achieve mechanical locking, keeping the sliding door in a half-open state, providing sufficient time for the safe evacuation of personnel or goods. This mechanism also adopts a mechanical structure and does not rely on electronic control, further enhancing the safety redundancy of the automatic door in the event of electronic system failure, reducing the risk of accidents, and improving the reliability and safety of the overall device. Attached Figure Description

[0019] Figure 1 This is a three-dimensional structural diagram of the present invention; Figure 2 This is a front view of the structural cross-section of the door frame, fixed door, sliding door, dual-axis motor, and drive mechanism of the present invention. Figure 3 This is a three-dimensional structural diagram of the door frame, dual-axis motor, and drive mechanism of the present invention. Figure 4 This is a three-dimensional structural diagram of the door frame, dual-axis motor, rotating shaft, tail pulley, and timing belt of the present invention. Figure 5 This is a three-dimensional structural diagram of the door frame, dual-axis motor, self-locking mechanism, and control mechanism of the present invention. Figure 6 This is a three-dimensional cross-sectional view of the dual-axis motor and self-locking mechanism of the present invention. Figure 7 This is a top view of the dual-axis motor, control mechanism, and contact mechanism of the present invention. Figure 8 This is a three-dimensional cross-sectional view of the control mechanism and the contact mechanism of the present invention; Figure 9 This is a three-dimensional cross-sectional view of the second output shaft, connecting shaft, and abutment mechanism of the present invention. Figure 10This is an exploded three-dimensional structural diagram of the first and second abutment blocks of the present invention; Figure 11 This is a three-dimensional structural diagram of the door frame, gear three, and stop mechanism of the present invention. Figure 12 This is a three-dimensional structural diagram of the stopping mechanism of the present invention.

[0020] In the picture: 1. Door frame; 2. Fixed door; 3. Sliding door; 4. Dual-axis motor; 41. First output shaft; 42. Second output shaft; 5. Drive mechanism; 51. Rotating shaft; 52. Drive wheel; 53. Tail wheel; 54. Synchronous belt; 55. Hanging wheel assembly; 56. Belt clamp; 6. Self-locking mechanism; 61. Friction disc; 62. Cover; 63. Stop clamp; 64. Friction block; 65. Hydraulic rod; 66. Return spring; 7. Control mechanism; 71. Connecting shaft; 711. Bracket; 72. Gear 1; 73. Gear 2; 74. Crown tooth 1; 75. 76. Bushing; 77. Gear 3; 78. Crown Gear 2; 79. Gear 4; 70. Central Shaft; 80. Gear 5; 81. Abutting Mechanism; 82. Abutting Block 1; 83. Abutting Block 2; 84. Adjusting Component; 85. Sleeve; 86. Insert Rod; 87. Spring 1; 88. Stop Plate; 99. Limiting Plate; 80. Spring 2; 91. Stopping Mechanism; 92. Base; 93. Rack; 94. Horizontal Rod; 95. Vertical Rod; 96. Groove; 97. Slider; 98. Slide Groove; 10. Controller; 11. Backup Power Supply. Detailed Implementation

[0021] To make the above-mentioned objects, features and advantages of the present invention more apparent and understandable, the specific embodiments of the present invention will be described in detail below with reference to the accompanying drawings.

[0022] Reference Figures 1-3 This invention provides an automatic door with a self-locking motor, including a door frame 1, a fixed door 2 symmetrically fixedly installed on the door frame 1, a sliding door 3 symmetrically slidably installed on the door frame 1, a dual-axis motor 4 installed on the door frame 1, and a drive mechanism 5 installed on the door frame 1. The drive mechanism 5 is used to drive the two sets of sliding doors 3 to open and close. The drive mechanism 5 includes a rotating shaft 51 rotatably installed on the door frame 1, a drive wheel 52 fixed on the rotating shaft 51, a tail wheel 53 installed on the door frame 1, a synchronous belt 54 installed between the drive wheel 52 and the tail wheel 53, and a set of hanging wheels 55 installed on the synchronous belt 54. The set of hanging wheels 55 is rigidly connected to the synchronous belt 54 through a belt clamp 56. When the synchronous belt 54 rotates, the set of hanging wheels 55 moves synchronously with it and drives the sliding doors 3 connected to it to complete the opening and closing action.

[0023] It should be noted that an infrared sensor is also installed on the door frame 1 to monitor whether there are people or objects around the door. A controller 10 and a backup power supply 11 are also installed on the door frame 1. The controller 10 can analyze and process the infrared sensor signal and issue control commands, and the backup power supply 11 can provide power when the main power is interrupted.

[0024] Among them, reference Figures 4-6 The dual-axis motor 4 is electrically connected to the controller 10. The dual-axis motor 4 is provided with a first output shaft 41 and a second output shaft 42 respectively. A self-locking mechanism 6 is provided at the first output shaft 41.

[0025] Specifically, the self-locking mechanism 6 includes a friction disc 61 fixed on the first output shaft 41, a housing 62 fixed on the dual-axis motor 4, and stop clamps 63 symmetrically arranged inside the housing 62. Each of the two sets of stop clamps 63 has a notch on its adjacent side that matches the outer edge of the friction disc 61. A friction block 64 is provided within the notch. Hydraulic rods 65 are symmetrically installed inside the housing 62. The output ends of the two sets of hydraulic rods 65 are respectively fixedly connected to the corresponding stop clamps 63. Return springs 66 are symmetrically fixed between the two sets of stop clamps 63. When locking is required, the hydraulic rods 65 control and push the stop clamps 63 towards the friction disc 61, causing the friction block 64 to tightly adhere to the outer edge of the friction disc 61. This frictional force locks the first output shaft 41. When the hydraulic rods 65 are depressurized, the spring force of the return spring 66 pulls the two sets of stop clamps 63 away from each other, separating the friction block 64 from the friction disc 61 and releasing the locking state. The hydraulic rods 65 are electrically connected to the controller 10.

[0026] Reference Figures 7-8 It also includes a control mechanism 7, which is located at the second output shaft 42.

[0027] Specifically, the control mechanism 7 includes a connecting shaft 71 disposed on the surface of the second output shaft 42, a gear 72 fixed on the connecting shaft 71, and a gear 73 fixed on the rotating shaft 51. The gear 73 meshes with the gear 72. A crown tooth 74 is also fixed on the connecting shaft 71. A bushing 75 is rotatably sleeved on the surface of the connecting shaft 71 through a bearing. A gear 76 and a crown tooth 77 are fixed on the bushing 75. A gear 78 meshes between the crown tooth 77 and the crown tooth 74. A bracket 711 is rotatably sleeved on the connecting shaft 71 through a bearing. A central shaft 781 is fixed at the center of the gear 78. The central shaft 781 is rotatably connected to the bracket 711 through a bearing. A gear 79 that meshes with the gear 76 is also fixed on the rotating shaft 51.

[0028] Under normal operating conditions, gear 2 73 meshes with gear 1 72. After the dual-shaft motor 4 starts, the second output shaft 42 drives gear 1 72 to rotate through the connecting shaft 71. Gear 1 72 meshes with gear 2 73 to drive the rotation of the rotating shaft 51. The rotating shaft 51 drives the drive wheel 52 to rotate. The drive wheel 52 drives the tail wheel 53 to rotate synchronously through the synchronous belt 54. Finally, the hanging wheel group 55 drives the sliding door 3 to open and close. While the connecting shaft 71 rotates, the power is transmitted to the bushing 75 through the mutual meshing of crown tooth 1 74, gear 4 78 and crown tooth 2 77. The rotation of the bushing 75 drives gear 3 76 to reverse.

[0029] Reference Figures 8-10 The connecting shaft 71 is slidably sleeved on the surface of the second output shaft 42, and an abutment mechanism 8 is provided between the second output shaft 42 and the connecting shaft 71.

[0030] Specifically, the abutment mechanism 8 includes an abutment block 1 81 fixed on the second output shaft 42, an abutment block 2 82 fixed on the connecting shaft 71, and an adjusting member 83 located between the abutment block 1 81 and the abutment block 2 82. The abutment block 2 82 and the abutment block 1 81 are both provided with helical surfaces on their adjacent sides, and the helical surfaces fit together. When the infrared sensor malfunctions, such as a false trigger or signal interruption, causing the self-locking mechanism 6 to fail to start, and the dual-axis motor 4 still drives the sliding door 3 to perform the closing operation, the pressure generated by the door contacting a person or hard object will be transmitted to the drive mechanism 5, causing the rotating shaft 51 to bear the pressure. As the torque increases, it is transmitted sequentially to gear 2 73 and gear 1 72, ultimately acting on connecting shaft 71 and abutment block 2 82. This causes the helical surfaces of abutment block 1 81 and abutment block 2 82 to rotate relative to each other. Due to the guiding effect of the helical surfaces, the rotational tendency is converted into axial thrust, which pushes abutment block 2 82 to drive connecting shaft 71 to slide axially along the second output shaft 42. This causes gear 1 72 to disengage from gear 2 73, while gear 5 79 engages with gear 3 76, thereby driving rotating shaft 51 to reverse, causing moving door 3 to open in the opposite direction and quickly release the clamped object.

[0031] The adjusting components 83 are equidistantly distributed along the surfaces of the first abutment block 81 and the second abutment block 82, and are arranged uniformly in a circle. The adjusting components 83 include a sleeve 831 hinged to the first abutment block 81, a rod 832 movably inserted into the sleeve 831, and a spring 833 provided on the rod 832. The end of the rod 832 away from the sleeve 831 is hinged to the second abutment block 82. The two ends of the spring 833 are respectively fixed to the sleeve 831 and the rod 832. Under the elastic force of the spring 833, the spiral surfaces of the first abutment block 81 and the second abutment block 82 are tightly fitted. When the second abutment block 82 drives the connecting shaft 71 to slide axially along the second output shaft 42, the rod 832 slides along the sleeve 831, and the spring 833 is stretched. At the same time, the sleeve 831 and the rod 832 twist as the angle between the first abutment block 81 and the second abutment block 82 changes.

[0032] Furthermore, the abutment mechanism 8 also includes a baffle 84 fixed to the end of the second output shaft 42, a limiting plate 85 fixed to the end of the connecting shaft 71, and a second spring 86 provided on the second output shaft 42. The two ends of the second spring 86 are fixed to the baffle 84 and the limiting plate 85 respectively. By utilizing the elastic effect of the second spring 86, after the torque disappears, the connecting shaft 71 is pushed to reset, so that the first gear 72 and the second gear 73 re-mesh, restoring the normal operation of the automatic door.

[0033] Reference Figures 11-12 The door frame 1 is equipped with a stop mechanism 9.

[0034] Specifically, the stopping mechanism 9 includes a base 91 fixed inside the door frame 1 and a rack 92 slidably connected to the base 91. The rack 92 is adapted to gear 3 76. A horizontal bar 93 is fixed to one end of the rack 92, and a vertical bar 94 is fixed to the base 91. A groove 95 is provided on the vertical bar 94 for the horizontal bar 93 to engage. When gear 3 76 slides axially along the second output shaft 42 with the connecting shaft 71 and meshes with gear 5 79, gear 3 76 can simultaneously mesh with the rack 92. It should be noted that... Yes, the diameter of gear 3 76 is larger than that of gear 5 79, so gear 3 76 can mesh with rack 92, while gear 5 79 is not affected by rack 92. At this time, the rotation of gear 3 76 drives rack 92 to slide along base 91. When rack 92 slides to the preset position, crossbar 93 is engaged in groove 95 to lock the position of rack 92. In turn, gear 3 76 restricts the rotation of connecting shaft 71 and rotating shaft 51, keeping the sliding door 3 in a half-open state and avoiding secondary pinching accidents.

[0035] Furthermore, a slider 96 is fixed on the rack 92, and a groove 97 is provided on the base 91 for the slider 96 to slide. A spring 98 is fixed between the groove 97 and the slider 96. When the gear 96 drives the rack 92 to slide, the slider 96 moves in the groove 97. When the rack 92 needs to be reset, the spring 98 pulls the slider 96 to reset the rack 92.

[0036] This invention provides the working principle of an automatic door with a self-locking motor: Under normal operating conditions, an infrared sensor on the door frame 1 monitors in real time whether there are people or objects around the door. The monitoring signal is transmitted to the controller 10. After analysis and processing, the controller 10 sends a control command to the dual-axis motor 4. After the dual-axis motor 4 starts, the second output shaft 42 drives the gear 72 to rotate through the connecting shaft 71. Since the gear 72 meshes with the gear 73 fixed on the rotating shaft 51, it drives the rotating shaft 51 to rotate. The rotating shaft 51 drives the drive wheel 52. When the drive wheel 52 rotates, it drives the tail wheel 53 to rotate synchronously through the synchronous belt 54. The hanging wheel group 55 on the synchronous belt 54 moves with the synchronous belt 54 under the action of the belt clamp 56, thereby driving the sliding door 3 connected to it to slide along the door frame 1, realizing the opening and closing action of the sliding door 3. At this time, the spiral surfaces of the first abutment block 81 and the second abutment block 82 in the abutment mechanism 8 are tightly fitted under the action of the first spring 833. The adjusting part 83 is in a natural state, and the second spring 86 maintains the stable position of the connecting shaft 71, so that the first gear 72 and the second gear 73 are stably meshed.

[0037] When the infrared sensor malfunctions, such as false triggering or signal interruption, preventing the self-locking mechanism 6 from being activated by the controller 10, and the dual-axis motor 4 still drives the sliding door 3 to perform the closing operation, the pressure generated by the door contacting a person or hard object is transmitted to the drive mechanism 5, increasing the torque on the rotating shaft 51. This torque is then transmitted sequentially to gear 2 73 and gear 1 72, ultimately acting on the connecting shaft 71 and the abutment block 2 82. This causes the spiral surfaces of abutment block 1 81 and abutment block 2 82 to rotate relative to each other. Under the guidance of the spiral surfaces, this rotation is converted into axial thrust, pushing the door... The abutment block 2 82 drives the connecting shaft 71 to slide axially along the second output shaft 42. At this time, the insertion rod 832 slides along the sleeve 831, the spring 1 833 is stretched, and the spring 2 86 is compressed. The sliding of the connecting shaft 71 causes the gear 1 72 to disengage from the gear 2 73. At the same time, the gear 5 79 engages with the gear 3 76. The power is transmitted to the bushing 75 through the crown tooth 1 74, the gear 4 78, and the crown tooth 2 77, which drives the gear 3 76 to rotate. The engagement of the gear 3 76 with the gear 5 79 drives the rotating shaft 51 to reverse, causing the moving door 3 to open in the opposite direction and quickly release the clamped object.

[0038] Simultaneously, gear 3 76 meshes with rack 92, causing rack 92 to slide along the groove 97 of base 91. Slider 96 moves with rack 92 and stretches spring 3 98. When rack 92 slides to the preset position, crossbar 93 engages in groove 95 of vertical bar 94, locking rack 92. Gear 3 76 restricts the rotation of connecting shaft 71 and rotating shaft 51, keeping the sliding door 3 in a half-open state to avoid secondary pinching. When the squeezing state is released and the torque drops below the threshold, spring 2 86 releases elastic potential energy, causing connecting shaft 71 to slide back and reset. Gear 1 72 and gear 2 73 re-mesh. At the same time, spring 3 98 pulls slider 96 to reset rack 92, crossbar 93 disengages from groove 95, stop mechanism 9 is unlocked, and adjusting component 83 returns to its natural state under the action of spring 1 833, and automatic door returns to normal operation.

[0039] It should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention and are not intended to limit it. Although the present invention has been described in detail with reference to preferred embodiments, those skilled in the art should understand that modifications or equivalent substitutions can be made to the technical solutions of the present invention without departing from the spirit and scope of the technical solutions of the present invention, and all such modifications or substitutions should be covered within the scope of the claims of the present invention.

Claims

1. An automatic door with a self-locking motor, comprising: Door frame (1); Fixed door (2), symmetrically fixedly installed on door frame (1); The sliding door (3) is symmetrically slidably mounted on the door frame (1); A dual-axis motor (4) is mounted on the door frame (1). The dual-axis motor (4) has a first output shaft (41) and a second output shaft (42). A self-locking mechanism (6) is provided at the first output shaft (41). The drive mechanism (5) is mounted on the door frame (1). The drive mechanism (5) includes a rotating shaft (51) mounted on the door frame (1), a drive wheel (52) fixed on the rotating shaft (51), a tail wheel (53) mounted on the door frame (1), a synchronous belt (54) between the drive wheel (52) and the tail wheel (53), and a set of hanging pulleys (55) mounted on the synchronous belt (54). The set of hanging pulleys (55) is rigidly connected to the synchronous belt (54) via a belt clip (56). The drive mechanism (55) is characterized by further including: The control mechanism (7) is located at the second output shaft (42). The control mechanism (7) includes a connecting shaft (71) located on the surface of the second output shaft (42), a gear one (72) fixed on the connecting shaft (71), and a gear two (73) fixed on the rotating shaft (51). The gear two (73) meshes with the gear one (72). A crown tooth one (74) is also fixed on the connecting shaft (71). A bushing (75) is rotatably sleeved on the surface of the connecting shaft (71). A gear three (76) and a crown tooth two (77) are fixed on the bushing (75). A gear four (78) meshes between the crown tooth two (77) and the crown tooth one (74). A gear five (79) that cooperates with the gear three (76) is also fixed on the rotating shaft (51).

2. The automatic door with a self-locking motor according to claim 1, characterized in that, The connecting shaft (71) is slidably sleeved on the surface of the second output shaft (42). An abutment mechanism (8) is provided between the second output shaft (42) and the connecting shaft (71). The abutment mechanism (8) includes an abutment block one (81) fixed on the second output shaft (42), an abutment block two (82) fixed on the connecting shaft (71), and an adjusting member (83) provided between the abutment block one (81) and the abutment block two (82). The abutment block two (82) and the abutment block one (81) are both provided with a spiral surface on the side that is close to the abutment block one (81), and the spiral surfaces fit together.

3. The automatic door with a self-locking motor according to claim 2, characterized in that, The adjusting member (83) is equidistantly distributed along the surfaces of the first abutment block (81) and the second abutment block (82). The adjusting member (83) includes a sleeve (831) hinged to the first abutment block (81), a rod (832) movably inserted into the sleeve (831), and a spring (833) provided on the rod (832). One end of the rod (832) is hinged to the second abutment block (82).

4. The automatic door with a self-locking motor according to claim 2, characterized in that, The abutment mechanism (8) further includes a baffle (84) fixed to the end of the second output shaft (42), a limiting plate (85) fixed to the end of the connecting shaft (71), and a second spring (86) provided on the second output shaft (42). The two ends of the second spring (86) are respectively fixed to the baffle (84) and the limiting plate (85).

5. The automatic door with a self-locking motor according to claim 1, characterized in that, A bracket (711) is rotatably sleeved on the connecting shaft (71), and a central shaft (781) is fixed at the center of the gear four (78), with the central shaft (781) rotatably connected to the bracket (711).

6. The automatic door with a self-locking motor according to claim 1, characterized in that, The door frame (1) is provided with a stop mechanism (9). The stop mechanism (9) includes a base (91) fixed inside the door frame (1) and a rack (92) slidably connected to the base (91). The rack (92) is adapted to the gear three (76). A crossbar (93) is fixed at one end of the rack (92). A vertical bar (94) is fixed on the base (91). A groove (95) is provided on the vertical bar (94) for the crossbar (93) to engage.

7. The automatic door with a self-locking motor according to claim 6, characterized in that, A slider (96) is fixed on the rack (92), and a groove (97) is provided on the base (91) for the slider (96) to slide. A spring (98) is fixed between the groove (97) and the slider (96).

8. The automatic door with a self-locking motor according to claim 1, characterized in that, The self-locking mechanism (6) includes a friction disc (61) fixed on the first output shaft (41), a cover (62) fixed on the dual-axis motor (4), and stop clamps (63) symmetrically arranged in the cover (62). The two sets of stop clamps (63) have notches on the side that are close to each other, which are adapted to the outer edge of the friction disc (61). Friction blocks (64) are provided in the notches. Hydraulic rods (65) are symmetrically installed in the cover (62). The output ends of the two sets of hydraulic rods (65) are respectively fixedly connected to the corresponding stop clamps (63).

9. The automatic door with a self-locking motor according to claim 8, characterized in that, A return spring (66) is symmetrically fixed between the two sets of stop clamps (63).

10. The automatic door with a self-locking motor according to claim 1, characterized in that, The door frame (1) is also equipped with a controller (10) and a backup power supply (11).

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