Shaft drive control mechanism for roller shutter door

Abstract

The utility model discloses a shaft drive control mechanism for a roller shutter door, which comprises a transmission case I, a transmission case II arranged on the left side of the transmission case I, a mounting box arranged at the upper end of the transmission case I, a limiting mechanism and a transmission mechanism, the limiting mechanism comprises a first gear, a second gear, a lead screw, a sliding block, a limiting piece and a limiting assembly, the first gear is arranged at the right end of the transmission shaft, and the lead screw is rotationally connected to the middle of the interior of the mounting box. Compared with chain transmission, middle transmission parts are reduced, friction force in the transmission process is reduced, energy transmission efficiency is improved, energy consumption and maintenance frequency are reduced, the lifting speed and position of the roller shutter door can be accurately controlled in cooperation with the limiting mechanism, accurate starting and stopping of the roller shutter door are achieved, and the requirements of different use scenes are met.

Description

Technical Field

[0001] This utility model relates to the technical field of roller shutter door drive devices, specifically a shaft drive control mechanism for roller shutter doors. Background Technology

[0002] Currently, roller shutters are widely used in commercial, industrial, and residential buildings for protection and isolation of building entrances. Most existing roller shutters use a chain-driven system, which transmits power through the meshing of a chain and sprockets to raise and lower the shutter. However, this chain-driven roller shutter system has several drawbacks. First, the chain, as the core transmission component, bears the weight of the door and the tension from frequent opening and stopping, making it prone to chain link wear and loosening of pins. Under heavy loads or high-frequency use, the chain may break due to fatigue, causing the door to suddenly fall, posing a serious safety hazard. Firstly, chain drives pose significant safety hazards. Secondly, as they involve rigid contact, they require overcoming substantial friction, such as the friction between the chain and sprockets / guide rails, resulting in significant energy loss and higher energy consumption compared to other transmission methods. Furthermore, chain-driven roller shutters require frequent and inconvenient maintenance. The chain needs regular lubrication, and its tension and wear must be checked. Replacing the chain or sprocket is also inconvenient. Moreover, chain-driven roller shutters have poor control precision, failing to accurately control the lifting and lowering speed, which can lead to the roller shutter overshooting and derailing. Therefore, we propose a shaft-driven control mechanism for roller shutters. Utility Model Content

[0003] The technical problem this utility model aims to solve is to overcome the existing defects and provide a shaft drive control mechanism for roller shutters. This mechanism controls the lifting and lowering of the roller shutter by driving the roller drum. Compared with chain drive, it reduces intermediate transmission components, lowers friction during transmission, improves energy transfer efficiency, and reduces energy consumption and maintenance frequency. Combined with a limit mechanism, it can accurately control the lifting speed and position of the roller shutter, enabling precise start and stop of the roller shutter and meeting the needs of different usage scenarios. This effectively solves the problems in the background technology.

[0004] To achieve the above objectives, the present invention provides the following technical solution: a shaft drive control mechanism for a roller shutter door, including a transmission box one, a transmission box two provided on the left side of the transmission box one, an installation box provided at the upper end of the transmission box one, a transmission shaft rotatably connected to the upper middle of the inner part of the transmission box one, and also including a limiting mechanism and a transmission mechanism.

[0005] Limiting mechanism: It includes gear one, gear two, lead screw, slider, limiting plate and limiting assembly. Gear one is located at the right end of the drive shaft. The lead screw is rotatably connected to the middle of the inside of the mounting box. Gear two is located at the right end of the lead screw. Gear one and gear two are meshed and connected. The slider is threaded to the left and right sides of the outer surface of the lead screw. The outer surface of the slider is provided with evenly distributed notches. The limiting plate is located on the front side of the bottom wall of the mounting box. The inner wall of the notch on the front side is slidably connected to the rear end of the limiting plate to provide a basis for limiting operation. The limiting assembly is located on the rear side of the inside of the mounting box.

[0006] Transmission mechanism: It is located inside transmission box one and transmission box two. It controls the lifting and lowering of the roller shutter door by driving the roller drum. It adopts the direct drive roller drum method, which reduces intermediate transmission components compared with chain drive, reduces friction in the transmission process, improves energy transfer efficiency, and reduces energy consumption and maintenance frequency. With the limit mechanism, it can accurately control the lifting speed and position of the roller shutter door, realize the precise start and stop of the roller shutter door, and meet the needs of different usage scenarios.

[0007] Furthermore, the limiting component includes a counter, springs, and micro switches. The counters are respectively located on the left and right sides of the rear end of the bottom wall of the mounting box. The springs are all located at the front end of the counter and are installed in conjunction with the vertically adjacent sliders. The micro switches are all located inside the counter on the side away from the middle of the lead screw. Both the counter and the micro switches are bidirectionally electrically connected to an external controller. The lifting height of the roller shutter door can be accurately known through the counter and the micro switches, thereby achieving precise positioning.

[0008] Furthermore, the transmission mechanism includes a worm, a worm wheel, and a drum. The worm is located on the right side of the outer surface of the transmission shaft, and the worm wheel is rotatably connected to the inside of the transmission housing. The worm and the worm wheel are meshed together. A mounting hole is provided in the middle of the inside of the worm wheel, and the drum is located inside the mounting hole, providing a foundation for drum connection and drive.

[0009] Furthermore, the transmission mechanism also includes a transmission assembly, which includes a speed regulating gear one, a speed regulating gear two, a speed regulating gear three, and a speed regulating gear four. The speed regulating gear one is located on the left side of the outer surface of the transmission shaft, the speed regulating gear two is located at the left end of the transmission shaft, the speed regulating gear three is located at the right rear end of the transmission housing two, and the speed regulating gear four is located in the middle of the rear side of the transmission housing two. The speed regulating gear one and the speed regulating gear three are installed together, and the speed regulating gear two and the speed regulating gear four are installed together, providing a basis for adjusting the lifting speed of the roller shutter door.

[0010] Furthermore, the transmission assembly also includes a transmission gear and a drive gear. The transmission gear is located at the rear left end of the inner side of the transmission box two, and the drive gear is rotatably connected to the middle of the left side wall of the transmission box two. The transmission gear and the drive gear mesh with each other to provide a stable transmission effect for the raising and lowering of the roller shutter door.

[0011] Furthermore, the transmission assembly also includes a cross slider and a connecting shaft. The cross sliders are slidably connected to the middle of the rear side of the left and right side walls of the transmission box two, and a connecting shaft is rotatably connected between the two cross sliders. The axes of the speed regulating gear three, the speed regulating gear four, and the transmission gear are all coincident. The inner middle of the speed regulating gear three, the speed regulating gear four, and the transmission gear are all fixedly connected to the outer surface of the connecting shaft, providing a basis for adjusting the gear ratio.

[0012] Furthermore, the transmission assembly also includes an electric push rod, which is located on the rear side of the transmission box. The input end of the electric push rod is electrically connected to the output end of an external controller, and the left end of the output shaft of the electric push rod is fixedly connected to the right end of the cross slider on the right side, providing a driving effect for the adjustment of the gear ratio.

[0013] Furthermore, it also includes a motor, which is located on the left side of the transmission box two. The input end of the motor is electrically connected to the output end of the external controller, and the right end of the motor's output shaft is fixedly connected to the left end of the drive gear, providing a stable driving effect for the raising and lowering of the roller shutter door.

[0014] Compared with the prior art, the beneficial effects of this utility model are as follows: This shaft drive control mechanism for roller shutter doors has the following advantages:

[0015] 1. The drum is connected to the mounting hole by connecting key and keyway. The drum is directly driven to rotate by the transmission mechanism inside transmission box one and transmission box two. Compared with chain drive, it reduces intermediate transmission components, reduces friction in the transmission process, improves energy transfer efficiency, and reduces energy consumption and maintenance frequency.

[0016] 2. The engagement of gear one and gear two drives the lead screw to rotate, which in turn moves the slider. The slider presses the spring to trigger the corresponding micro switch. In conjunction with the counter, the number of rotations of the motor output shaft is continuously detected, which can accurately know the lifting height of the roller shutter door and achieve precise start and stop of the roller shutter door, avoiding the situation where the roller shutter door is derailed due to excessive lifting or lowering.

[0017] 3. The connecting shaft moves left and right using an electric push rod and a cross slider. When the connecting shaft moves to the right, speed regulating gear two and speed regulating gear four are engaged. Speed ​​regulating gear four needs to rotate multiple times for speed regulating gear two to rotate once, causing the drive shaft to rotate at a reduced speed, and the roller shutter door descends slowly. When the connecting shaft moves to the left, speed regulating gear one and speed regulating gear three are engaged. Speed ​​regulating gear three rotates once for speed regulating gear one to rotate multiple times, causing the drive shaft to rotate at an accelerated speed, and the roller shutter door rises rapidly. With the help of a counter, the lifting speed and position of the roller shutter door can be precisely controlled to meet the needs of different usage scenarios. Attached Figure Description

[0018] Figure 1 This is a schematic diagram of the structure of this utility model;

[0019] Figure 2 This is a cross-sectional structural diagram of the limiting mechanism and the transmission mechanism of this utility model;

[0020] Figure 3 This is a schematic diagram of the limiting mechanism of this utility model;

[0021] Figure 4 This is a schematic diagram of the transmission mechanism of this utility model.

[0022] In the diagram: 1. Transmission Box I, 2. Transmission Box II, 3. Mounting Box, 4. Transmission Shaft, 5. Limiting Mechanism, 51. Gear I, 52. Gear II, 53. Lead Screw, 54. Slider, 55. Limiting Plate, 56. Limiting Assembly, 561. Counter, 562. Spring, 563. Micro Switch, 6. Transmission Mechanism, 61. Worm Gear, 62. Worm Wheel, 63. Drum, 64. Transmission Assembly, 641. Speed ​​Regulating Gear I, 642. Speed ​​Regulating Gear II, 643. Speed ​​Regulating Gear III, 644. Speed ​​Regulating Gear IV, 645. Transmission Gear, 646. Drive Gear, 647. Cross Slider, 648. Connecting Shaft, 649. Electric Push Rod, 7. Motor. Detailed Implementation

[0023] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0024] Please see Figure 1-4 This embodiment provides a technical solution: a shaft drive control mechanism for a roller shutter door, including a transmission box 1, a transmission box 2 on the left side of the transmission box 1, a front end cover on the front side of the transmission box 1, a left end cover on the left side of the transmission box 2, an installation box 3 on the upper end of the transmission box 1, and an upper end cover on the upper end of the installation box 3. All three end covers are detachable for easy maintenance and repair. A transmission shaft 4 is rotatably connected to the middle of the upper end inside the transmission box 1. It also includes a limiting mechanism 5 and a transmission mechanism 6.

[0025] Limiting mechanism 5 includes gear 1 51, gear 2 52, lead screw 53, slider 54, limiting plate 55, and limiting assembly 56. Gear 1 51 is located at the right end of the drive shaft 4. Lead screw 53 is rotatably connected to the middle of the interior of mounting box 3. Gear 2 52 is located at the right end of lead screw 53. Gear 1 51 and gear 2 52 are meshed together. Slider 54 is threaded to the left and right sides of the outer surface of lead screw 53. The outer surface of slider 54 is provided with evenly distributed notches. Limiting plate 55 is located on the front side of the bottom wall of mounting box 3. The inner wall of the notches on the front side is slidably connected to the rear end of limiting plate 55 to limit movement. The positioning mechanism provides the foundation for the operation. The limiting component 56 is located inside the rear side of the mounting box 3. The limiting component 56 includes a counter 561, springs 562, and a micro switch 563. The counter 561 is located on the left and right sides of the rear end of the bottom wall of the mounting box 3. The counter 561 is a non-contact motor counter that utilizes magneto-electric induction and photoelectric conversion technology to accurately calculate the motor speed by detecting changes in the magnetic field or light signal generated when the motor rotates, thereby achieving non-contact automatic counting. The springs 562 are all located at the front end of the counter 561 and are installed in conjunction with the vertically adjacent sliders 54. The spring 562 can be made of stainless steel. Initially, the spring 562 is tilted forward. When pressed by the slider 54, the spring 562 deforms. When the slider 54 separates from the spring 562, due to the elastic properties of the material, the spring 562 quickly returns to its original shape. The microswitches 563 are all located inside the counter 561 on the side away from the center of the lead screw 53. The working principle of the microswitches 563 is that the slider 54 presses the spring 562, causing the spring 562 to deform and press the contact of the microswitch 563, triggering the internal spring to momentarily actuate and achieve contact. The system features rapid on / off switching. Both the counter 561 and the micro switch 563 are bidirectionally electrically connected to the external controller. The rising and falling height of the roller shutter can be accurately determined through the counter 561 and the micro switch 563, thereby achieving precise positioning. It also includes a motor 7, which is located on the left side of the transmission box 2. The input end of the motor 7 is electrically connected to the output end of the external controller. The right end of the output shaft of the motor 7 is fixedly connected to the left end of the drive gear 646. The probe of the counter 561 is located in the middle of the front end cover on the front side of the transmission box 1 to detect the status of the output shaft of the motor 7, providing a stable driving effect for the rising and falling of the roller shutter.

[0026] Transmission mechanism 6: It is located inside transmission housing 1 and transmission housing 2. Transmission mechanism 6 includes a worm 61, a worm wheel 62, and a drum 63. The worm 61 is located on the right side of the outer surface of the transmission shaft 4. The worm wheel 62 is rotatably connected to the middle of the interior of transmission housing 1 via a bearing. The worm 61 and worm wheel 62 are meshed and have a mechanical self-locking effect. A mounting hole is provided in the middle of the interior of the worm wheel 62. The drum 63 is located inside the mounting hole. Keyways are provided on the upper end of the outer surface of the drum 63 and the upper end of the inner wall of the mounting hole, providing a connecting key to connect the drum 63 to the mounting hole, providing a basis for the connection and drive of the drum 63. Transmission mechanism 6 also includes a transmission assembly 64. Component 64 includes a first speed regulating gear 641, a second speed regulating gear 642, a third speed regulating gear 643, and a fourth speed regulating gear 644. The first speed regulating gear 641 is located on the left side of the outer surface of the transmission shaft 4. The second speed regulating gear 642 is located at the left end of the transmission shaft 4. The third speed regulating gear 643 is located at the right rear end of the inner side of the transmission housing 2. The fourth speed regulating gear 644 is located in the middle of the rear side of the inner side of the transmission housing 2. The first speed regulating gear 641 and the fourth speed regulating gear 644 have the same number of teeth, and the second speed regulating gear 642 and the third speed regulating gear 643 have the same number of teeth. The first speed regulating gear 641 and the third speed regulating gear 643 are fitted together, with the number of teeth of the first speed regulating gear 641 being less than the number of teeth of the third speed regulating gear 643. When the first speed regulating gear 641 and the third speed regulating gear 643 are meshed, the transmission shaft 4 is in a certain position. In the accelerated rotation state, the second speed regulating gear 642 and the fourth speed regulating gear 644 are fitted together. The number of teeth of the second speed regulating gear 642 is less than the number of teeth of the fourth speed regulating gear 644. When the second speed regulating gear 642 and the fourth speed regulating gear 644 mesh, the transmission shaft 4 rotates in a decelerated state, providing a basis for adjusting the lifting speed of the roller shutter door. The transmission assembly 64 also includes a transmission gear 645 and a drive gear 646. The transmission gear 645 is located at the rear left end of the inner side of the transmission box 2. The drive gear 646 is rotatably connected to the middle of the left side wall of the transmission box 2. The transmission gear 645 and the drive gear 646 mesh together to provide a stable transmission effect for the lifting of the roller shutter door. The transmission assembly 64 also includes a cross slider 647 and a connecting shaft 648. The cross slider 647 is slidably connected to the connecting shaft 648. In the middle of the rear sidewalls of the second transmission box 2, a connecting shaft 648 is rotatably connected between two cross sliders 647. Each cross slider 647 has a bearing inside, and the inner wall of the bearing is fixedly connected to the outer surface of the connecting shaft 648. The connecting shaft 648 rotatably connects between the two cross sliders 647 and moves with the left and right movement of the cross sliders 647. The axes of the speed regulating gear 3 643, the speed regulating gear 4 644, and the transmission gear 645 are all coincident. The middle of the interior of each of the speed regulating gear 3 643, the speed regulating gear 4 644, and the transmission gear 645 is fixedly connected to the outer surface of the connecting shaft 648, providing a basis for adjusting the gear ratio. The transmission assembly 64 also includes an electric push rod 649, which is located on the rear side of the first transmission box 1.The input end of the electric push rod 649 is electrically connected to the output end of an external controller. The left end of the output shaft of the electric push rod 649 is fixedly connected to the right end of the cross slider 647 on the right side, providing a driving effect for gear ratio adjustment. It drives the roller drum 63 to control the lifting and lowering of the roller shutter door. Compared to chain drive, this direct drive method reduces intermediate transmission components, lowers friction during transmission, improves energy transfer efficiency, and reduces energy consumption and maintenance frequency. Combined with the limit mechanism 5, it can precisely control the lifting speed and position of the roller shutter door, achieving precise start and stop, and meeting the needs of different usage scenarios.

[0027] The working principle of the shaft drive control mechanism for a roller shutter door provided by this utility model is as follows: When the shaft drive control mechanism of the roller shutter door is working, the roller 63 is first connected to the mounting hole through the connecting key and keyway. When the door is opened, the external controller controls the motor 7 to run. The output shaft of the motor 7 drives the drive gear 646 to rotate. Because the transmission gear 645 is meshed with the drive gear 646, the transmission gear 645 also rotates, driving the connecting shaft 648 to rotate. At this time, the speed regulating gear 1 641 and the speed regulating gear 3 643 are in a meshing state, and the speed regulating gear 2 642 and the speed regulating gear 4 644 are in a disengaged state. Because the number of teeth of the speed regulating gear 1 641 is less than the number of teeth of the speed regulating gear 3 643, the speed regulating gear 3 643 rotates one revolution, and the speed regulating gear 1 641 642 rotates one revolution. The drive shaft 4 rotates multiple times, accelerating its rotation. Through the meshing of the worm gear 61 and worm wheel 62, the drum 63 rotates, causing the roller shutter to roll up quickly. During this process, the external controller controls the counter 561. The probe of counter 561 continuously detects the number of rotations of the output shaft of motor 7. When motor 7 is running, counter 561 senses the rotation of the motor shaft. For each rotation of the motor shaft, counter 561 increases its count. By recording the number of rotations of the motor shaft, the external controller can accurately determine the lifting height of the roller shutter, thus achieving precise positioning. Simultaneously, as the drive shaft 4 rotates, gear 1 51 also rotates. Because gear 1 51 meshes with gear 2 52, gear 2 52 also rotates, driving the lead screw 53. As the screw 53 rotates, both sliders 54 move to the right simultaneously. The slider 54 is threadedly connected to the outer surface of the lead screw 53, and the notch on the front of the slider 54 is slidably connected to the rear end of the limiting piece 55. With the rotation of the lead screw 53, the right slider 54 contacts and presses against the right spring piece 562, causing the right spring piece 562 to slowly deform backward until the roller shutter door is fully open. At this point, the left slider 54 separates from the left spring piece 562, and the right slider 54 presses against the right spring piece 562. The right spring piece 562 deforms backward, pressing the right microswitch 563 backward. The right microswitch 563 sends an electrical signal to the external controller, which then stops the motor 7, preventing the roller shutter door from rising excessively. When closing the door, to prevent safety hazards caused by excessive closing speed, the descent speed of the roller shutter door needs to be reduced. At this time, the external controller controls the electric push rod 649 to operate. The telescopic end of the electric push rod 649 retracts to the right, driving the cross slider 647 to move to the right inside the transmission box 2. The connecting shaft 648 also moves to the right accordingly. After the connecting shaft 648 moves into position, the speed regulating gear 1 641 and the speed regulating gear 3 643 are in a disengaged state, while the speed regulating gear 2 642 and the speed regulating gear 4 644 are in a meshed state. Because the number of teeth of the speed regulating gear 2 642 is greater than the number of teeth of the speed regulating gear 4 644, the speed regulating gear 4 644 needs to rotate multiple times for the speed regulating gear 2 642 to rotate once. When the motor 7 reverses and acts on the transmission shaft 4 through the various gears,The drive shaft 4 rotates in a decelerated state, driving the drum 63 to rotate at a low speed through the meshing of the worm 61 and worm wheel 62, causing the roller shutter door to descend slowly. During this process, the meshing of the worm 61 and worm wheel 62 forms a mechanical self-lock, preventing the drive shaft 4 from deflecting. When the speed regulating gear 1 641 and speed regulating gear 3 643 are disengaged while the speed regulating gear 2 642 and speed regulating gear 4 644 are not yet meshed, there is significant resistance when the drive gear 645 and drive gear 646 mesh, and the connecting shaft 648 will not deflect. The thickness of the drive gear 645 is greater than that of the cross slider 647. The travel distance of the connecting shaft 648 is such that the transmission gear 645 and the drive gear 646 remain meshed throughout the speed adjustment process. Simultaneously, through the transmission of gear one 51, gear two 52, and the lead screw 53, both sliders 54 move to the left. When the roller shutter door reaches its final position, the left slider 54 triggers the left microswitch 563, and the right slider 54 disengages from the right microswitch 563. The left microswitch 563 then sends an electrical signal to the external controller, which stops the motor 7, preventing the roller shutter door from descending excessively.

[0028] It is worth noting that the counter 561 disclosed in the above embodiments is an RM08 counter, the electric actuator 649 is an LA10-021D electric actuator, and the motor 7 is a 1FT7136-5AC71-1MA1 motor. The external controller controls the operation of the counter 561, the micro switch 563, the electric actuator 649, and the motor 7 using methods commonly used in the prior art.

[0029] The above description is merely an embodiment of this utility model and does not limit the patent scope of this utility model. Any equivalent structural or procedural transformations made based on the content of this utility model specification and drawings, or direct or indirect applications in other related technical fields, are similarly included within the patent protection scope of this utility model.

Claims

1. A shaft drive control mechanism for a roller shutter door, comprising a transmission box one (1), a transmission box two (2) provided on the left side of the transmission box one (1), a mounting box (3) provided at the upper end of the transmission box one (1), and a transmission shaft (4) rotatably connected to the middle of the upper end inside the transmission box one (1), characterized in that: It also includes a limiting mechanism (5) and a transmission mechanism (6); Limiting mechanism (5): It includes gear one (51), gear two (52), lead screw (53), slider (54), limiting plate (55) and limiting component (56). Gear one (51) is located at the right end of the transmission shaft (4). Lead screw (53) is rotatably connected to the middle of the inside of the mounting box (3). Gear two (52) is located at the right end of the lead screw (53). Gear one (51) and gear two (52) are meshed and connected. Slider (54) is threaded to the left and right sides of the outer surface of lead screw (53). The outer surface of slider (54) is provided with evenly distributed notches. Limiting plate (55) is located on the front side of the bottom wall of mounting box (3). The inner wall of the notch on the front side is slidably connected to the rear end of limiting plate (55). Limiting component (56) is located on the rear side of the inside of mounting box (3). Transmission mechanism (6): It is located inside transmission box one (1) and transmission box two (2).

2. The shaft drive control mechanism for a roller shutter door according to claim 1, characterized in that: The limiting component (56) includes a counter (561), a spring (562), and a micro switch (563). The counter (561) is respectively located on the left and right sides of the rear end of the bottom wall of the mounting box (3). The springs (562) are all located at the front end of the counter (561). The springs (562) are all installed in cooperation with the vertically adjacent sliders (54). The micro switches (563) are all located inside the counter (561) on the side away from the middle of the lead screw (53). The counter (561) and the micro switches (563) are all bidirectionally electrically connected to the external controller.

3. The shaft drive control mechanism for a roller shutter door according to claim 1, characterized in that: The transmission mechanism (6) includes a worm (61), a worm wheel (62) and a drum (63). The worm (61) is located on the right side of the outer surface of the transmission shaft (4). The worm wheel (62) is rotatably connected to the middle of the transmission box (1). The worm (61) and the worm wheel (62) are meshed. An installation hole is provided in the middle of the worm wheel (62). The drum (63) is located inside the installation hole.

4. The shaft drive control mechanism for a roller shutter door according to claim 1, characterized in that: The transmission mechanism (6) further includes a transmission assembly (64), which includes a speed regulating gear one (641), a speed regulating gear two (642), a speed regulating gear three (643), and a speed regulating gear four (644). The speed regulating gear one (641) is located on the left side of the outer surface of the transmission shaft (4), the speed regulating gear two (642) is located on the left end of the transmission shaft (4), the speed regulating gear three (643) is located on the right side of the rear interior of the transmission box two (2), and the speed regulating gear four (644) is located in the middle of the rear interior of the transmission box two (2). The speed regulating gear one (641) and the speed regulating gear three (643) are installed together, and the speed regulating gear two (642) and the speed regulating gear four (644) are installed together.

5. A shaft drive control mechanism for a roller shutter door according to claim 4, characterized in that: The transmission assembly (64) further includes a transmission gear (645) and a drive gear (646). The transmission gear (645) is located at the rear left end of the transmission box 2 (2), and the drive gear (646) is rotatably connected to the middle of the left side wall of the transmission box 2 (2). The transmission gear (645) and the drive gear (646) are meshed together.

6. A shaft drive control mechanism for a roller shutter door according to claim 5, characterized in that: The transmission assembly (64) also includes a cross slider (647) and a connecting shaft (648). The cross slider (647) is slidably connected to the middle of the rear side of the left and right side walls of the transmission box (2). A connecting shaft (648) is rotatably connected between the two cross sliders (647). The axes of the speed regulating gear three (643), the speed regulating gear four (644), and the transmission gear (645) are all coincident. The inner middle of the speed regulating gear three (643), the speed regulating gear four (644), and the transmission gear (645) are all fixedly connected to the outer surface of the connecting shaft (648).

7. A shaft drive control mechanism for a roller shutter door according to claim 6, characterized in that: The transmission assembly (64) also includes an electric push rod (649), which is located on the rear side of the transmission box (1). The input end of the electric push rod (649) is electrically connected to the output end of an external controller, and the left end of the output shaft of the electric push rod (649) is fixedly connected to the right end of the cross slider (647) on the right side.

8. A shaft drive control mechanism for a roller shutter door according to claim 5, characterized in that: It also includes a motor (7), which is located on the left side of the transmission box (2). The input end of the motor (7) is electrically connected to the output end of the external controller, and the right end of the output shaft of the motor (7) is fixedly connected to the left end of the drive gear (646).

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