Adjustable limit open door motor

Abstract

The application provides an adjustable limit opening door motor, and relates to the field of opening door motors. The application comprises a motor and a speed reducer, a transmission assembly is arranged in the speed reducer, the motor is installed on the speed reducer, a driving assembly is arranged between the output shaft of the motor and the transmission assembly, and a hard limit assembly is arranged on the transmission assembly. The application has the effect of being not prone to collision and damage.

Description

Technical Field

[0001] This application relates to the field of door opening motors, and in particular to an adjustable limit door opening motor. Background Technology

[0002] A door opener motor is an electric motor used in automatic door systems. Its main function is to drive the door to open and close by generating rotational torque. Door opener motors also have advantages such as energy saving, environmental protection, low noise, and long lifespan, and are widely used in commercial, residential, and industrial fields.

[0003] Currently, traditional door opening motors typically consist of a motor body, a reducer, and a controller.

[0004] However, the door opening motor in the above technology lacks hard limit protection. Once the door is driven beyond the predetermined range of motion, it is easy to cause a collision or even damage. Summary of the Invention

[0005] In order to improve the problems existing in the above-mentioned technology, this application provides an adjustable limit door opening motor.

[0006] This application provides an adjustable limit door opening motor, which adopts the following technical solution:

[0007] An adjustable limit door opening motor includes: a motor and a gearbox, wherein a transmission component is disposed inside the gearbox, the motor is mounted on the gearbox, and a drive component is disposed between the output shaft of the motor and the transmission component, and a hard limit component is disposed on the transmission component.

[0008] By adopting the above technical solution, the hard limit component can prevent the drive door from exceeding the predetermined range of motion, thus making it less likely to collide or even be damaged, and can also protect personnel.

[0009] Optionally, the drive assembly includes a drive rod, a drive gear, and a rotating gear. The drive rod is coaxially connected to the output shaft of the motor, and the drive gear is coaxially sleeved on the drive rod. The rotating gear is coaxially fixed to the transmission assembly, and the drive gear meshes with the rotating gear.

[0010] By adopting the above technical solution, the motor is started to drive the drive rod to rotate the drive gear; the rotation of the drive gear can drive the rotating gear to rotate, so that the transmission component can operate quickly.

[0011] Optionally, the transmission assembly includes: a primary lever, a primary driving gear, a primary driven gear, a secondary lever, a secondary driving gear, a secondary driven gear, a tertiary lever, a tertiary driving gear, a tertiary driven gear, a quaternary lever, a quaternary driving gear, a quaternary driven gear, and a quinary lever. The primary lever, the secondary lever, the tertiary lever, the quaternary lever, and the quinary lever are all rotatably mounted within the reduction gearbox. The rotating gear and the primary driving gear are coaxially sleeved on the primary lever, and the primary driven gear and the secondary driving gear are coaxially sleeved on the secondary lever. The second-stage driven gear and the third-stage driving gear are coaxially mounted on the third-stage rod. The third-stage driven gear and the fourth-stage driving gear are coaxially mounted on the fourth-stage rod. The fourth-stage driven gear is coaxially mounted on the fifth-stage rod. The first-stage driving gear meshes with the first-stage driven gear, the second-stage driving gear meshes with the second-stage driven gear, the third-stage driving gear meshes with the third-stage driven gear, and the fourth-stage driving gear meshes with the fourth-stage driven gear. The hard limiting component is disposed between the fifth-stage rod and the fourth-stage driven gear.

[0012] By adopting the above technical solution, when the rotating gear rotates, it can sequentially drive the rotation of the first-stage lever, the first-stage driving gear, the first-stage driven gear, the second-stage lever, the second-stage driving gear, the second-stage driven gear, the third-stage lever, the third-stage driving gear, the third-stage driven gear, the fourth-stage lever, the fourth-stage driving gear, the fourth-stage driven gear, and the fifth-stage lever, thereby ultimately driving the door hinge to move, so as to open or close the door.

[0013] Optionally, the hard limit assembly includes: a collar, a stop block, and a stop post. The collar is sleeved on the fifth-stage rod, the stop block is fixed on the collar, and the stop post is fixed on the fourth-stage driven gear.

[0014] By adopting the above technical solution, when the fourth-stage driven gear drives the fifth-stage lever to rotate, the stop post on the fourth-stage driven gear will abut against the stop block, thereby forming a limit and preventing the fourth-stage driven gear from continuing to rotate, thus preventing the drive door from exceeding the predetermined movement range.

[0015] Optionally, an adjustment assembly is provided between the collar and the gearbox. The adjustment assembly includes a worm gear, a worm, and an end cover. The worm gear is rotatably sleeved on the five-stage rod, and the collar is fixedly connected to the worm gear. The worm is rotatably mounted on the gearbox, and the worm is fixedly connected to the end cover. The worm meshes with the worm gear.

[0016] By adopting the above technical solution, during adjustment, the worm is rotated to drive the worm wheel to rotate the collar, thereby changing the initial position of the stop block and thus changing the rotation stroke of the fourth-stage driven gear, thereby improving applicability.

[0017] Optionally, a maintenance assembly is provided between the gearbox and the motor. The maintenance assembly includes a pushing part, a connecting part, a moving part, and a maintenance part. The pushing part includes a locking rod, a pushing bearing, a fixed plate, a rotating rod, a first gear, a second gear, and an electric push rod. The driving rod includes a front rod and a rear rod. The front rod is coaxially fixed to the output shaft of the motor, and the first gear is coaxially sleeved on the front rod. A slot is provided on the front rod. The driving gear is coaxially sleeved on the rear rod. One end of the locking rod is fixed to the rear rod, and the other end is disposed in the slot. The pushing bearing is fixedly sleeved on the rear rod. The electric push rod is fixed inside the gearbox, and the output shaft of the electric push rod is fixed to the outer ring of the pushing bearing. The fixed plate is fixed to the outer ring of the pushing bearing. The rotating rod is rotatably mounted on the fixed plate. The second gear is coaxially sleeved on the rotating rod. The connecting part is disposed on the rotating rod. The moving part is disposed inside the gearbox. The maintenance part is disposed between the moving part and the gearbox.

[0018] By adopting the above technical solution, the maintenance component can perform regular maintenance on all gears in the gearbox, thereby extending the service life of all gears in the gearbox and improving the smoothness of transmission.

[0019] Optionally, the connecting part includes: a connecting rod and a connecting spring, the rotating rod has a receiving hole, the connecting rod is disposed in the receiving hole, the connecting spring is fixed between the connecting rod and the bottom of the receiving hole, and the connecting rod has a guide surface.

[0020] By adopting the above technical solution, when the rotating rod moves up to the point where the first gear and the second gear mesh, the connecting rod connects the rotating rod to the moving part, so that the rotating rod can drive the moving part to operate, and the moving part can drive the maintenance part to maintain all the gears.

[0021] Optionally, the moving part includes: a linkage rod, a lead screw, a guide rod, a moving plate, and a transmission belt. The lead screw is rotatably installed inside the reduction gearbox, the guide rod is fixed inside the reduction gearbox, the moving plate is sleeved between the lead screw and the guide rod, and the lead screw and the moving plate are threaded together. The transmission belt is disposed between the linkage rod and the lead screw. The linkage rod has a connecting hole for the connecting rod to be inserted. The maintenance part is disposed between the moving plate and the reduction gearbox.

[0022] By adopting the above technical solution, when the lead screw rotates, the moving plate can move on the guide rod and along the length of the guide rod.

[0023] Optionally, the maintenance unit includes: an oil reservoir, a pump, a delivery pipe, an injection pipe, and an injection head. The oil reservoir is mounted on the gearbox, the pump is mounted on the oil reservoir and communicates with it, the injection pipe is rotatably mounted on the movable plate, and the injection head is disposed on the injection pipe. One end of the delivery pipe is communicated with the injection pipe, and the other end is connected to the pump.

[0024] By adopting the above technical solution, when the moving plate moves, the oil pump is started to pump the lubricating oil into the oil injection pipe, and the spray head sprays it onto all the gears in the gearbox, thereby achieving the maintenance effect.

[0025] Optionally, the maintenance component further includes a swinging part, which includes a fixed rack, a moving gear, a slider, a connecting rod, a pull rope, and a return spring. The fixed rack is fixed inside the gearbox, the moving gear is rotatably mounted on the moving plate and meshes with the fixed rack, the slider is slidably disposed on the moving plate, one end of the connecting rod is rotatably mounted on the moving gear and the other end is rotatably mounted on the slider, one end of the pull rope is fixed to the slider and the other end is fixed to the fuel injection pipe, and the return spring is fixed between the fuel injection pipe and the moving plate.

[0026] By adopting the above technical solution, when the slider moves upward, the return spring resets the oil injection pipe, thereby driving the oil injection pipe to swing, so as to increase the spray range of the injection head and ensure that all gears can be lubricated by lubricating oil.

[0027] In summary, this application includes at least one of the following beneficial effects:

[0028] 1. Hard limit components can prevent the drive door from exceeding the predetermined range of motion, thus reducing the risk of collision or even damage, and can also protect personnel.

[0029] 2. When the fourth-stage driven gear drives the fifth-stage lever to rotate, the stop pin on the fourth-stage driven gear will abut against the stop block, thereby forming a limit and preventing the fourth-stage driven gear from continuing to rotate, thus preventing the drive door from exceeding the predetermined movement range.

[0030] 3. During adjustment, rotate the worm gear to drive the worm wheel to rotate the collar, thereby changing the initial position of the stop block and changing the rotational stroke of the fourth-stage driven gear, thus improving applicability. Attached Figure Description

[0031] Figure 1 This is a structural schematic diagram according to Embodiment 1 of this application;

[0032] Figure 2 yes Figure 1A schematic diagram of the internal structure of the gearbox;

[0033] Figure 3 This is a structural schematic diagram according to Embodiment 2 of this application;

[0034] Figure 4 It is along Figure 3 A schematic cross-sectional view taken by the cutting line AA in the diagram;

[0035] Figure 5 yes Figure 4 A schematic diagram of the internal structure of the gearbox;

[0036] Figure 6 yes Figure 5 A schematic enlarged view of part B.

[0037] In the diagram: 1. Gearbox; 11. Motor; 2. Swinging part; 21. Fixed rack; 22. Moving gear; 23. Slider; 24. Connecting rod; 25. Pull rope; 26. Return spring; 3. Drive assembly; 31. Drive rod; 311. Front rod; 3111. Slot; 312. Rear rod; 32. Drive gear; 33. Rotating gear; 4. Transmission assembly; 41. First stage rod; 42. First stage driving gear; 43. First stage driven gear; 44. Second stage rod; 45. Second stage driving gear; 46. Second stage driven gear; 47. Third stage rod; 48. Third stage driving gear; 49. Third stage driven gear; 40. Fourth stage rod; 401. Fourth stage driving gear; 402. Fourth stage driven gear; 403. Fifth stage rod; 5. Hard limit assembly; 51. Collar; 52. Stop block; 53. Stop post; 6. Adjustment assembly; 61. Worm gear; 62. Worm; 63. End cover; 7. Pushing part; 71. Locking rod; 72. Push bearing; 73. Fixing plate; 74. Rotating rod; 741. Accommodating hole; 75. First gear; 76. Second gear; 77. Electric push rod; 8. Connecting part; 81. Connecting rod; 811. Guide surface; 82. Connecting spring; 9. Moving part; 91. Linkage rod; 911. Connecting hole; 92. Lead screw; 93. Guide rod; 94. Moving plate; 95. Transmission belt; 10. Maintenance part; 101. Oil reservoir; 102. Oil pump; 103. Delivery pipe; 104. Injection pipe; 105. Injection head. Detailed Implementation

[0038] This application provides an adjustable limit door opening motor.

[0039] Example 1:

[0040] See Figure 1 and Figure 2An adjustable limit door opening motor includes a motor 11 and a gearbox 1. All electrical devices involved in this application embodiment can be controlled by a controller. A transmission assembly 4 is provided inside the gearbox 1. The motor 11 is installed on the outer wall of the gearbox 1, and a drive assembly 3 is provided between the output shaft of the motor 11 and the transmission assembly 4. In application, the output end of the transmission assembly 4 can be connected to the door hinge. Then, the motor 11 is started to drive the drive assembly 3 to drive the transmission assembly 4 to operate, thereby opening or closing the door.

[0041] See Figure 2 The drive assembly 3 includes a drive rod 31, a drive gear 32, and a rotating gear 33. The drive rod 31 is coaxially connected to the output shaft of the motor 11, and the drive gear 32 is coaxially sleeved on the drive rod 31. The rotating gear 33 is coaxially fixed to the transmission assembly 4, and the drive gear 32 meshes with the rotating gear 33. In application, the motor 11 is started to drive the drive rod 31 to rotate the drive gear 32; the rotation of the drive gear 32 can drive the rotating gear 33 to rotate, thereby enabling the transmission assembly 4 to operate rapidly.

[0042] See Figure 2 The transmission assembly 4 includes: a first-stage lever 41, a first-stage driving gear 42, a first-stage driven gear 43, a second-stage lever 44, a second-stage driving gear 45, a second-stage driven gear 46, a third-stage lever 47, a third-stage driving gear 48, a third-stage driven gear 49, a fourth-stage lever 40, a fourth-stage driving gear 401, a fourth-stage driven gear 402, and a fifth-stage lever 403. The first-stage lever 41, the second-stage lever 44, the third-stage lever 47, the fourth-stage lever 40, and the fifth-stage lever 403 are all rotatably mounted in the reduction gearbox 1 and are arranged along the length of the reduction gearbox 1. In application, the fifth-stage lever 403 can be connected to the door hinge.

[0043] See Figure 2 The rotating gear 33 and the first-stage driving gear 42 are coaxially mounted on the first-stage rod 41; the first-stage driven gear 43 and the second-stage driving gear 45 are coaxially mounted on the second-stage rod 44, and the first driving gear meshes with the first-stage driven gear 43. The second-stage driven gear 46 and the third-stage driving gear 48 are coaxially mounted on the third-stage rod 47, and the second-stage driving gear 45 meshes with the second-stage driven gear 46. The third-stage driven gear 49 and the fourth-stage driving gear 401 are coaxially mounted on the fourth-stage rod 40, and the third-stage driving gear 48 meshes with the third-stage driven gear 49.

[0044] See Figure 2The fourth-stage driven gear 402 is coaxially sleeved on the fifth-stage rod 403, and the fourth-stage driving gear 401 meshes with the fourth-stage driven gear 402. When the rotating gear 33 rotates, the rotating gear 33 can sequentially drive the rotation of the first-stage rod 41, the first-stage driving gear 42, the first-stage driven gear 43, the second-stage rod 44, the second-stage driving gear 45, the second-stage driven gear 46, the third-stage rod 47, the third-stage driving gear 48, the third-stage driven gear 49, the fourth-stage rod 40, the fourth-stage driving gear 401, the fourth-stage driven gear 402, and the fifth-stage rod 403, thereby ultimately driving the door hinge to move to open or close the door.

[0045] See Figure 2 The five-level lever 403 is equipped with a hard limit component 5, which can prevent the drive door from exceeding the predetermined range of motion, thus making it less likely to collide or even be damaged, and can also protect personnel.

[0046] See Figure 2 The hard limit component 5 includes a collar 51, a stop block 52, and a stop post 53. The collar 51 is sleeved on the fifth-stage rod 403, and the stop block 52 is integrally formed on the collar 51. The stop post 53 is fixed to the top wall of the fourth-stage driven gear 402. When the fourth-stage driven gear 402 drives the fifth-stage rod 403 to rotate, the stop post 53 on the fourth-stage driven gear 402 will abut against the stop block 52, thereby forming a limit and preventing the fourth-stage driven gear 402 from continuing to rotate, thus preventing the drive door from exceeding the predetermined movement range.

[0047] See Figure 1 and Figure 2 Furthermore, an adjustment assembly 6 is provided between the collar 51 and the gearbox 1. The adjustment assembly 6 includes a worm gear 61, a worm 62, and an end cap 63. The worm gear 61 is rotatably mounted on the fifth-stage rod 403 via a common bearing, and the collar 51 is fixedly connected to the worm gear 61. The worm 62 is rotatably mounted on the inner wall of the gearbox 1 and is horizontally positioned. The worm 62 meshes with the worm gear 61. During adjustment, the worm 62 is rotated to drive the worm gear 61 to rotate the collar 51, thereby changing the initial position of the stop block 52 and thus changing the rotational stroke of the fourth-stage driven gear 402, thereby improving applicability.

[0048] The working principle of Example 1 is as follows: In application, the motor 11 is started to drive the drive rod 31 to drive the drive gear 32 to rotate; the rotation of the drive gear 32 can drive the rotating gear 33 to rotate; the rotating gear 33 can sequentially drive the rotation of the first-stage rod 41, the first-stage driving gear 42, the first-stage driven gear 43, the second-stage rod 44, the second-stage driving gear 45, the second-stage driven gear 46, the third-stage rod 47, the third-stage driving gear 48, the third-stage driven gear 49, the fourth-stage rod 40, the fourth-stage driving gear 401, the fourth-stage driven gear 402 and the fifth-stage rod 403, thereby ultimately driving the door hinge to move to open or close the door.

[0049] Example 2:

[0050] See Figure 3 and Figure 4 The difference between this embodiment and Embodiment 1 is that a maintenance component is provided between the gearbox 1 and the motor 11. This maintenance component can periodically maintain all gears in the gearbox 1 to extend the service life of all gears in the gearbox 1 and improve the smoothness of transmission. In this embodiment, the size of the gearbox 1 is adjusted to be larger than that of the gearbox 1 in Embodiment 1 to accommodate the maintenance component.

[0051] See Figure 4 , Figure 5 and Figure 6 The maintenance components include: a pushing part 7, a connecting part 8, a moving part 9, and a maintenance part 10.

[0052] See Figure 4 The pushing part 7 includes: a locking rod 71, a pushing bearing 72, a fixing plate 73, a rotating rod 74, a first gear 75, a second gear 76, and an electric push rod 77. In this embodiment, the driving rod 31 includes: a front rod 311 and a rear rod 312. The front rod 311 is coaxially fixedly connected to the output shaft of the motor 11, and a square slot 3111 is provided on the top wall of the front rod 311. The driving gear 32 is coaxially sleeved on the rear rod 312. One end of the locking rod 71 is fixed to the rear rod 312, and the other end is set in the slot 3111. The motor 11 is started to drive the front rod 311 to drive the rear rod 312 to rotate.

[0053] See Figure 4 The drive bearing 72 is fixedly sleeved on the rear rod 312; the electric push rod 77 is fixedly installed on the inner top wall of the gearbox 1, and the output shaft of the electric push rod 77 is fixedly connected to the outer ring of the drive bearing 72. When the electric push rod 77 is started, the rear rod 312 is pulled upward, so that the rear rod 312 and the front rod 311 can be separated, that is, the drive gear 32 and the rotating gear 33 can be separated.

[0054] See Figure 4 The fixed plate 73 is fixed to the outer ring of the push bearing 72, and the rotating rod 74 is rotatably mounted on the side wall of the fixed plate 73. The rotating rod 74 is horizontally set and perpendicular to the fixed plate 73. The first gear 75 is coaxially sleeved on the front rod 311, and the second gear 76 is coaxially sleeved on the rotating rod 74. After the rear rod 312 is pulled up, the second gear 76 moves up until the second gear 76 meshes with the first gear 75. Thus, the front rod 311 can drive the first gear 75 to drive the second gear 76 to rotate, and then the second gear 76 can drive the rotating rod 74 to rotate.

[0055] See Figure 4The connecting part 8 includes a connecting rod 81 and a connecting spring 82. The rotating rod 74 has a receiving hole 741 at one end away from the fixed plate 73. One end of the connecting rod 81 is disposed in the receiving hole 741, and the other end extends out of the receiving hole 741. The connecting spring 82 is fixed between the connecting rod 81 and the bottom of the receiving hole 741, and the connecting spring 82 is used to push the connecting rod 81 to extend out of the receiving hole 741.

[0056] See Figure 4 The top and bottom walls of the connecting rod 81 away from the connecting spring 82 are provided with inclined guide surfaces 811, and the end of the guide surface 811 near the connecting spring 82 is located in the receiving hole 741. When the rotating rod 74 moves up to the point where the first gear 75 meshes with the second gear 76, the connecting rod 81 connects the rotating rod 74 with the moving part 9, so that the rotating rod 74 can drive the moving part 9 to operate, so that the moving part 9 can drive the maintenance part 10 to maintain all the gears.

[0057] See Figure 4 , Figure 5 and Figure 6 The moving part 9 includes: a linkage rod 91, a lead screw 92, a guide rod 93, a moving plate 94, and a transmission belt 95. The linkage rod 91 and the lead screw 92 are rotatably mounted on the inner side wall of the reduction gearbox 1 and are horizontally arranged. The transmission belt 95 is driven between the linkage rod 91 and the lead screw 92. The linkage rod 91 has a connecting hole 911 at one end near the rotating rod 74 for the connecting rod 81 to be inserted. During the meshing of the first gear 75 and the second gear 76, the connecting rod 81 contacts the linkage rod 91 and is retracted into the receiving hole 741 by the guide surface 81. After the first gear 75 and the second gear 76 mesh, the connecting spring 82 pushes the connecting rod 81 to automatically insert into the connecting hole 911, thereby connecting the rotating rod 74 and the linkage rod 91, so that the rotating rod 74 can drive the linkage rod 91 to rotate, and thus the linkage rod 91 can drive the lead screw 92 to rotate.

[0058] See Figure 6 The guide rod 93 is fixed on the inner side wall of the gearbox 1; the movable plate 94 is sleeved between the guide rod 93 and the lead screw 92, and the lead screw 92 and the movable plate 94 are threaded together. When the lead screw 92 rotates, the movable plate 94 can move on the guide rod 93 and along the length of the guide rod 93.

[0059] See Figure 5 and Figure 6The maintenance unit 10 includes: an oil reservoir 101, an oil pump 102, a delivery pipe 103, an oil injection pipe 104, and an injection head 105. The oil reservoir 101 is fixedly installed on the outer wall of the gearbox 1 and is used to store lubricating oil. The oil pump 102 is installed on the oil reservoir 101 and is connected to the oil reservoir 101. The oil injection pipe 104 is rotatably installed on the side of the movable plate 94 near the first stage rod 41, and the injection head 105 is installed on the oil injection pipe 104. The injection head 105 can atomize the lubricating oil to a certain extent and spray it onto all gears.

[0060] See Figure 5 and Figure 6 One end of the delivery pipe 103 is connected to the oil pump 102, and the other end is connected to the oil spray pipe 104. In this embodiment, the delivery pipe 103 is a flexible hose and its length meets the moving distance of the moving plate 94. When the moving plate 94 moves, the oil pump 102 is started to pump the lubricating oil into the oil spray pipe 104, and the spray head 105 sprays it onto all the gears in the gearbox 1, thereby achieving the maintenance effect.

[0061] See Figure 6 Furthermore, the maintenance component also includes: the swing part 2 includes: a fixed rack 21, a moving gear 22, a slider 23, a connecting rod 24, a pull rope 25, and a return spring 26. The fixed rack 21 is fixed to the inner side wall of the gearbox 1 and is horizontally arranged; the moving gear 22 is rotatably mounted on the side of the moving plate 94 away from the fuel injection pipe 104, and the moving gear 22 meshes with the fixed rack 21. During the movement of the moving plate 94, the moving gear 22 can rotate.

[0062] See Figure 6 The slider 23 is slidably disposed on the side of the moving plate 94 away from the fuel injection pipe 104, and the slider 23 slides in the vertical direction; one end of the connecting rod 24 is rotatably mounted on the side of the moving gear 22 away from the moving plate 94, and the other end is rotatably mounted on the slider 23. When the moving gear 22 rotates, the slider 23 can reciprocate up and down in the vertical direction through the setting of the connecting rod 81.

[0063] See Figure 6 One end of the pull rope 25 is fixed to the slider 23, and the other end is fixed to one side wall of the fuel injection pipe 104. The return spring 26 is fixed to the moving plate 94 and the side wall of the fuel injection pipe 104 away from the pull rope 25. When the slider 23 moves down, the pull rope 25 can pull the fuel injection pipe 104 to rotate. When the slider 23 moves up, the return spring 26 resets the fuel injection pipe 104, thereby driving the fuel injection pipe 104 to swing, so as to increase the spray range of the spray head 105 and ensure that all gears can be lubricated by lubricating oil.

[0064] The working principle of Example 2 is as follows: When the moving plate 94 moves, the oil pump 102 is started to pump the lubricating oil into the oil spray pipe 104, and the spray head 105 sprays it onto all the gears in the gearbox 1, thereby achieving the maintenance effect.

[0065] The above are all preferred embodiments of this application, and are not intended to limit the scope of protection of this application. Therefore, all equivalent changes made in accordance with the structure, shape and principle of this application should be covered within the scope of protection of this application.

Claims

1. An adjustable limit door opening motor, characterized in that, include: The motor (11) and the gearbox (1) are provided with a transmission assembly (4), the motor (11) is mounted on the gearbox (1), and a drive assembly (3) is provided between the output shaft of the motor (11) and the transmission assembly (4). A hard limit assembly (5) is provided on the transmission assembly (4). The drive assembly (3) includes a drive rod (31), a drive gear (32), and a rotating gear (33). The drive rod (31) is coaxially connected to the output shaft of the motor (11), and the drive gear (32) is coaxially sleeved on the drive rod (31). The rotating gear (33) is coaxially fixed to the transmission assembly (4), and the drive gear (32) meshes with the rotating gear (33). The transmission assembly (4) includes: a first-stage rod (41), a first-stage driving gear (42), a first-stage driven gear (43), a second-stage rod (44), a second-stage driving gear (45), a second-stage driven gear (46), a third-stage rod (47), a third-stage driving gear (48), a third-stage driven gear (49), a fourth-stage rod (40), a fourth-stage driving gear (401), a fourth-stage driven gear (402), and a fifth-stage rod (403). The first-stage rod (41), the second-stage rod (44), the third-stage rod (47), the fourth-stage rod (40), and the fifth-stage rod (403) are all rotatably mounted inside the reduction gearbox (1). The rotating gear (33) and the first-stage driving gear (42) are coaxially sleeved on the first-stage rod (41), and the first-stage driven gear (43) and the second-stage driving gear (45) are coaxially sleeved on the reduction gearbox (1). On the second-stage rod (44), the second-stage driven gear (46) and the third-stage driving gear (48) are coaxially sleeved on the third-stage rod (47), the third-stage driven gear (49) and the fourth-stage driving gear (401) are coaxially sleeved on the fourth-stage rod (40), the fourth-stage driven gear (402) is coaxially sleeved on the fifth-stage rod (403), and the first-stage driving gear (42) meshes with the first-stage driven gear (43), the second-stage driving gear (45) meshes with the second-stage driven gear (46), the third-stage driving gear (48) meshes with the third-stage driven gear (49), the fourth-stage driving gear (401) meshes with the fourth-stage driven gear (402), and the hard limiting component (5) is disposed between the fifth-stage rod (403) and the fourth-stage driven gear (402); A maintenance assembly is provided between the gearbox (1) and the motor (11). The maintenance assembly includes a pusher (7), a connecting part (8), a moving part (9), and a maintenance part (10). The pusher (7) includes a locking rod (71), a push bearing (72), a fixing plate (73), a rotating rod (74), a first gear (75), a second gear (76), and an electric push rod (77). The drive rod (31) includes a front rod (311) and a rear rod (312). The front rod (311) is coaxially fixed with the output shaft of the motor (11), and the first gear (75) is coaxially sleeved on the front rod (311). A slot (3111) is provided on the front rod (3111). The drive gear (32) is coaxially sleeved on the rear rod (312). The locking rod (711) is coaxially sleeved on the rear rod (312). One end of 71) is fixed to the rear rod (312), and the other end is set in the slot (3111). The push bearing (72) is fixedly sleeved on the rear rod (312). The electric push rod (77) is fixed in the gearbox (1), and the output shaft of the electric push rod (77) is fixed to the outer ring of the push bearing (72). The fixing plate (73) is fixed on the outer ring of the push bearing (72). The rotating rod (74) is rotatably installed on the fixing plate (73). The second gear (76) is coaxially sleeved on the rotating rod (74). The connecting part (8) is set on the rotating rod (74). The moving part (9) is set in the gearbox (1). The maintenance part (10) is set between the moving part (9) and the gearbox (1).

2. The adjustable limit door opening motor according to claim 1, characterized in that, The hard limit component (5) includes: a collar (51), a stop block (52) and a stop post (53). The collar (51) is sleeved on the five-stage rod (403), the stop block (52) is fixed on the collar (51), and the stop post (53) is fixed on the four-stage driven gear (402).

3. The adjustable limit door opening motor according to claim 2, characterized in that, An adjustment assembly (6) is provided between the collar (51) and the gearbox (1). The adjustment assembly (6) includes a worm gear (61), a worm (62), and an end cap (63). The worm gear (61) is rotatably sleeved on the five-stage rod (403), and the collar (51) is fixedly connected to the worm gear (61). The worm (62) is rotatably mounted on the gearbox (1), and the worm (62) is fixedly connected to the end cap (63). The worm (62) meshes with the worm gear (61).

4. The adjustable limit door opening motor according to claim 1, characterized in that, The connecting part (8) includes a connecting rod (81) and a connecting spring (82). The rotating rod (74) has a receiving hole (741). The connecting rod (81) is disposed in the receiving hole (741). The connecting spring (82) is fixed between the connecting rod (81) and the bottom of the receiving hole (741). The connecting rod (81) has a guide surface (811).

5. The adjustable limit door opening motor according to claim 4, characterized in that, The moving part (9) includes: a linkage rod (91), a lead screw (92), a guide rod (93), a moving plate (94), and a transmission belt (95). The lead screw (92) is rotatably installed in the gearbox (1). The guide rod (93) is fixed in the gearbox (1). The moving plate (94) is sleeved between the lead screw (92) and the guide rod (93), and the lead screw (92) and the moving plate (94) are threaded together. The transmission belt (95) is disposed between the linkage rod (91) and the lead screw (92). The linkage rod (91) has a connecting hole (911) for the connecting rod (81) to be inserted. The maintenance part (10) is disposed between the moving plate (94) and the gearbox (1).

6. The adjustable limit door opening motor according to claim 5, characterized in that, The maintenance unit (10) includes: an oil reservoir (101), an oil pump (102), a delivery pipe (103), an oil injection pipe (104), and an injection head (105). The oil reservoir (101) is mounted on the gearbox (1). The oil pump (102) is mounted on the oil reservoir (101) and communicates with the oil reservoir (101). The oil injection pipe (104) is rotatably mounted on the movable plate (94), and the injection head (105) is disposed on the oil injection pipe (104). One end of the delivery pipe (103) is communicated with the oil injection pipe (104), and the other end is connected to the oil pump (102).

7. The adjustable limit door opening motor according to claim 6, characterized in that, The maintenance component further includes a swinging part (2), which includes a fixed rack (21), a moving gear (22), a slider (23), a connecting rod (24), a pull rope (25), and a return spring (26). The fixed rack (21) is fixed inside the gearbox (1). The moving gear (22) is rotatably mounted on the moving plate (94) and meshes with the fixed rack (21). The slider (23) is slidably mounted on the moving plate (94). One end of the connecting rod (24) is rotatably mounted on the moving gear (22), and the other end is rotatably mounted on the slider (23). One end of the pull rope (25) is fixed to the slider (23), and the other end is fixed to the fuel injection pipe (104). The return spring (26) is fixed between the fuel injection pipe (104) and the moving plate (94).

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