Safety servo industrial door opener

Abstract

The utility model discloses a safe servo industrial door opener which comprises a box body, a rack arranged on the upper wall of the box body, a gear in meshing transmission with the rack and a controller. According to the utility model, the magnetic powder clutch is instantly powered off to realize the separation of the power shaft, and meanwhile, the magnetostriction driver directly drives the brake pad to press the brake disc, so that the clearance accumulation delay of the traditional multi-stage mechanical transmission is eliminated, the synchronous triggering of power interruption and brake action is ensured, and the clamping risk caused by the continuous movement of the door body due to inertia is avoided; redundant servo motor, bevel gear separation mechanism and bidirectional threaded rod transmission are abandoned, the micro-deformation characteristic of the magnetostriction driver is matched with linear pressing of the electric push rod, constant extrusion force is continuously output after emergency braking, springback of a brake pad or secondary sliding of a door body is prevented, meanwhile, a mechanical link is simplified, and the service life of the door body is prolonged. The failure rate and the long-term maintenance difficulty are reduced.

Description

Technical Field

[0001] This utility model relates to the field of industrial door technology, and in particular to a safety servo industrial door opener. Background Technology

[0002] Industrial gates are large and difficult to open and close manually. Therefore, industrial gate openers have gradually become the product for automating gate opening. Installing them makes opening and closing gates easy and is a great step forward for society.

[0003] However, in existing equipment, when opening and closing the door, if an object is about to be caught and the door movement needs to be stopped, the industrial door opener needs to quickly apply an emergency brake to reduce the probability of accidental damage to the object. To this end, a disclosed technology proposes a safety braking mechanism for industrial door openers, including a fixed box. The top of the fixed box is rotatably connected to a first rotating column, and the upper surface of the fixed box is fixedly connected to a first servo motor. The output shaft of the first servo motor is fixedly connected to one end of the first rotating column, and the bottom of the first rotating column is fixedly connected to a first conical tooth. This disclosed technology claims that by setting a second servo motor, a first threaded rod, a sliding rod, a limit frame, a ball bearing, an outer sleeve column, a second conical tooth, and a spring, the second servo motor drives the first threaded rod to rotate, the first threaded rod drives the sliding rod to move, and the sliding rod pushes the second conical tooth to move on the second rotating column through the ball bearing, so that the second conical tooth disengages from the first conical tooth. This avoids the need to stop supplying power to the door in time when an object is about to be caught and the door movement needs to be stopped, thus reducing the probability of accidental damage to the object.

[0004] However, the above technology still has the following drawbacks: First, the power cutting response speed is insufficient: the power cutting is achieved by driving mechanical transmission components such as threaded rods and sliding rods through a second servo motor. The transmission chain is long and there are mechanical gaps. The response delay is obvious during emergency braking, making it difficult to meet the millisecond-level rapid braking requirements. Second, the braking action speed response is insufficient. It uses a third servo motor to drive a bidirectional threaded rod to drive ceramic brake pads to move closer to each other for braking. It also has the problem of a long transmission chain and mechanical gaps, resulting in a significant response delay during emergency braking.

[0005] Therefore, it is necessary to improve the structure of the servo industrial door opener to enhance its safety. Utility Model Content

[0006] The purpose of this invention is to address the shortcomings of existing technologies by proposing a safe servo industrial door opener.

[0007] To achieve the above objectives, this utility model adopts the following technical solution: a safety servo industrial door opener, comprising a housing, a rack mounted on the upper wall of the housing, a gear meshing with the rack, and a controller. A servo motor is fixedly connected to the rear wall of the housing. The extended shaft end of the servo motor penetrates the rear wall of the housing and is fixedly connected to a drive shaft via a coupling. The end of the drive shaft away from the servo motor is connected to a rotating shaft via a magnetic powder clutch. The end of the rotating shaft away from the drive shaft penetrates the front wall of the housing and is fixedly connected to the gear. Two sets of partitions are fixedly connected in a front-to-back arrangement on the inner side of the housing near the front wall. The outer wall of the shaft passes through and is rotatably connected to two sets of partitions. A brake disc is fixedly connected to the outer wall of the shaft between the two sets of partitions. Brake pads are provided on the side of each set of partitions facing the brake disc. A magnetostrictive actuator is fixedly connected to the side of the partition away from the brake disc. A drive rod is provided inside the magnetostrictive actuator. The end of the drive rod facing the partition passes through the inner wall of the partition and is fixedly connected to the brake pad. A spring is sleeved on the outer wall of the drive rod between the partition and the brake pad. An electric push rod is fixedly connected to the side of the partition away from the brake pad. A heat dissipation structure is provided inside the housing for heat dissipation.

[0008] As a further description of the above technical solution:

[0009] The heat dissipation structure includes a temperature sensor, a filter, a cooling fan, and a heat dissipation window. The temperature sensor is fixedly connected to the inner rear wall of the box via a bracket. The filter is fixedly connected to the rear wall of the box and near the lower wall. The cooling fan is fixedly connected to one end of the filter facing the inside of the box. The heat dissipation window is fixedly connected to the front wall of the box and near the upper wall.

[0010] As a further description of the above technical solution:

[0011] The outer wall of the drive shaft is provided with a conductive slip ring for supplying power to the magnetic powder clutch during rotation.

[0012] As a further description of the above technical solution:

[0013] The controller is fixedly connected to the upper inner wall of the housing, and the servo motor, electric push rod, magnetostrictive actuator, cooling fan and magnetic powder clutch are all electrically connected to the controller.

[0014] As a further description of the above technical solution:

[0015] The extension shaft end of the electric push rod is fixedly connected to a push block, which is located in the space between the partition and the brake pad.

[0016] As a further description of the above technical solution:

[0017] The drive shaft is rotatably connected to the lower inner wall of the housing via a first rotating seat, and the shaft is rotatably connected to the lower inner wall of the housing via a second rotating seat, the second rotating seat being located in front of the first rotating seat.

[0018] As a further description of the above technical solution:

[0019] A rain cover is fixedly connected to the top of the enclosure, and the rain cover covers the enclosure, gears, and servo motor.

[0020] This utility model has the following beneficial effects:

[0021] 1. Compared with existing technologies, this safety servo industrial door opener uses a magnetic powder clutch to instantly disconnect the power shaft, while the magnetostrictive actuator directly drives the brake pads to press against the brake disc, eliminating the backlash and delay of traditional multi-stage mechanical transmission, ensuring that the power interruption and braking action are triggered synchronously, and avoiding the risk of clamping caused by the door continuing to move due to inertia.

[0022] 2. Compared with existing technologies, this safety servo industrial door opener solves the problems of high maintenance costs and insufficient continuous braking force caused by complex transmission mechanisms through an integrated brake control structure: it eliminates redundant servo motors, bevel gear disengagement mechanisms and bidirectional threaded rod transmissions, and utilizes the micro-deformation characteristics of magnetostrictive actuators and the linear pressure of electric push rods to continuously output constant extrusion force after emergency braking, preventing brake pad rebound or secondary door sliding. At the same time, it simplifies the mechanical links, reduces the failure rate and long-term maintenance difficulty. Attached Figure Description

[0023] Figure 1 This is a schematic diagram of the overall structure of the safety servo industrial door opener proposed in this utility model;

[0024] Figure 2 This is a front view of the housing, rain cover, rotating shaft, and gear connection structure of the safety servo industrial door opener proposed in this utility model.

[0025] Figure 3 This is a partial sectional view of the internal structure of the housing of the safety servo industrial door opener proposed in this utility model.

[0026] Figure 4 The safety servo industrial door opener proposed in this utility model Figure 3 A magnified view of a portion of point A in the middle.

[0027] Legend:

[0028] 1. Housing; 2. Rain cover; 3. Shaft; 4. Gear; 5. Heat dissipation window; 6. Filter screen; 7. Cooling fan; 8. Servo motor; 9. Coupling; 10. Drive shaft; 11. First rotating seat; 12. Conductive slip ring; 13. Second rotating seat; 14. Magnetic powder clutch; 15. Partition plate; 16. Brake disc; 17. Brake pad; 18. Electric push rod; 19. Push block; 20. Magnetostrictive actuator; 21. Drive rod; 22. Spring; 23. Temperature sensor; 24. Controller. Detailed Implementation

[0029] 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.

[0030] Reference Figures 1 to 4 The safety servo industrial door opener provided by this utility model includes a housing 1, a rack installed on the upper wall of the housing 1, a gear 4 meshing with the rack for transmission, and a controller 24.

[0031] To achieve synchronous response of power transmission and emergency cut-off, a servo motor 8 is fixedly connected to the rear wall of the housing 1. The extended shaft end of the servo motor 8 passes through the rear wall of the housing 1 and is fixedly connected to a drive shaft 10 through a coupling 9. The end of the drive shaft 10 away from the servo motor 8 is connected to a rotating shaft 3 through a magnetic powder clutch 14. The end of the rotating shaft 3 away from the drive shaft 10 passes through the front wall of the housing 1 and is fixedly connected to a gear 4. A conductive slip ring 12 for supplying power to the magnetic powder clutch 14 during rotation is provided on the outer wall of the drive shaft 10. The drive shaft 10 is rotatably connected to the lower inner wall of the housing 1 through a first rotating seat 11. The rotating shaft 3 is rotatably connected to the lower inner wall of the housing 1 through a second rotating seat 13. The second rotating seat 13 is located in front of the first rotating seat 11.

[0032] When the controller 24 detects an emergency braking signal, the magnetic powder clutch 14 is instantly de-energized and disengaged, thereby cutting off the power transmission from the servo motor 8 to the gear 4, ensuring rapid physical separation.

[0033] To improve the instantaneousness and pressure stability of braking action, two sets of partitions 15 are fixedly connected in a front-to-back arrangement on the inner side of the housing 1 near the front wall. The outer wall of the rotating shaft 3 passes through the two sets of partitions 15 and is rotatably connected to them. A brake disc 16 is fixedly connected to the outer wall of the rotating shaft 3 between the two sets of partitions 15. Brake pads 17 are provided on the side of the two sets of partitions 15 facing the brake disc 16. A magnetostrictive actuator 20 is fixedly connected to the side of the partition 15 away from the brake disc 16. A drive rod 21 is provided inside the magnetostrictive actuator 20. The end of the drive rod 21 facing the partition 15 passes through the inner wall of the partition 15 and is fixedly connected to the brake pad 17. A spring 22 is sleeved on the outer wall of the drive rod 21 between the partition 15 and the brake pad 17. An electric push rod 18 is fixedly connected to the side of the partition 15 away from the brake pad 17. A push block 19 is fixedly connected to the end of the extended shaft of the electric push rod 18. The push block 19 is located in the space between the partition 15 and the brake pad 17.

[0034] When the controller 24 triggers emergency braking, the magnetostrictive actuator 20 drives the drive rod 21 to extend in microseconds, and with the spring force of the spring 22, directly pushes the brake pad 17 to press against the brake disc 16; at the same time, the electric push rod 18 continuously squeezes the brake pad 17 through the push block 19 to maintain a constant pressure between the brake pad 17 and the brake disc 16, and prevents secondary displacement caused by inertial slippage.

[0035] To address the performance degradation caused by overheating during braking, a heat dissipation structure is installed inside the housing 1. The heat dissipation structure includes a temperature sensor 23, a filter screen 6, a cooling fan 7, and a heat dissipation window 5. The temperature sensor 23 is fixedly connected to the inner rear wall of the housing 1 via a bracket. The filter screen 6 is fixedly connected to the rear wall of the housing 1 and is located near the lower wall. The cooling fan 7 is fixedly connected to one end of the filter screen 6 facing the inside of the housing 1. The heat dissipation window 5 is fixedly connected to the front wall of the housing 1 and is located near the upper wall.

[0036] Temperature sensor 23 monitors the temperature inside the enclosure 1 in real time. When the temperature exceeds the threshold, controller 24 starts cooling fan 7. External air is filtered by filter screen 6 and discharged through heat dissipation window 5 to prevent key components such as magnetic powder clutch 14 and magnetostrictive actuator 20 from overheating, which could lead to a decrease in magnetic performance or mechanical deformation.

[0037] In order to coordinate the timing consistency of the actions of multiple components, the controller 24 is fixedly connected to the upper inner wall of the housing 1. The servo motor 8, electric push rod 18, magnetostrictive actuator 20, cooling fan 7 and magnetic powder clutch 14 are all electrically connected to the controller 24. In this embodiment, the magnetostrictive actuator 20 and the electric push rod 18 are provided in multiple sets and the multiple sets are symmetrically distributed.

[0038] The controller 24 synchronously controls the timing of the magnetic powder clutch 14 de-energizing, the magnetostrictive actuator 20 instantaneously braking, and the electric push rod 18 continuously pressurizing, ensuring seamless connection between power cut-off and active braking, and avoiding braking failure caused by response differences in multi-stage actuators;

[0039] To prevent external environmental erosion from affecting braking reliability, a rain cover 2 is fixedly connected to the top of the housing 1, which covers the housing 1, gear 4 and servo motor 8.

[0040] The rain cover 2 can isolate rainwater and dust from corroding the meshing surface of gear 4 and servo motor 8, reducing the risk of increased transmission resistance or poor electrical contact caused by environmental factors.

[0041] Working principle: When the controller 24 detects an emergency braking signal, the magnetic powder clutch 14 is instantly de-energized and disengaged, thereby cutting off the power transmission from the servo motor 8 to the gear 4, ensuring rapid physical separation; when the controller 24 triggers emergency braking, the magnetostrictive actuator 20 drives the drive rod 21 to extend in microseconds, which, together with the spring 22, directly pushes the brake pad 17 to press against the brake disc 16; at the same time, the electric push rod 18 continuously squeezes the brake pad 17 through the push block 19, maintaining a constant pressure between the brake pad 17 and the brake disc 16, preventing secondary displacement caused by inertial slippage; the temperature sensor 23 monitors the temperature inside the housing 1 in real time, and when the temperature exceeds the threshold, the controller... 24. The cooling fan 7 is started, and the outside air is filtered by the filter screen 6 and discharged through the heat dissipation window 5 to prevent the magnetic performance of key components such as the magnetic powder clutch 14 and the magnetostrictive actuator 20 from deteriorating or deforming due to overheating. The controller 24 synchronously controls the timing of the action sequence of the magnetic powder clutch 14 being de-energized and disengaged, the magnetostrictive actuator 20 being momentarily braked, and the electric push rod 18 being continuously pressurized, to ensure seamless connection between power cut-off and active braking, and to avoid braking failure caused by response differences in multi-stage actuators. The rain cover 2 can isolate rainwater and dust from corroding the meshing surface of the gear 4 and the servo motor 8, reducing the risk of increased transmission resistance or poor electrical contact caused by environmental factors.

[0042] Finally, it should be noted that the above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Although the present utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A safety type servo industrial door opener characterized by: The assembly includes a housing (1), a rack mounted on the upper wall of the housing (1), a gear (4) meshing with the rack, and a controller (24). A servo motor (8) is fixedly connected to the rear wall of the housing (1). The extended shaft end of the servo motor (8) passes through the rear wall of the housing (1) and is fixedly connected to a transmission shaft (10) via a coupling (9). The end of the transmission shaft (10) away from the servo motor (8) is connected to a rotating shaft (3) via a magnetic powder clutch (14). The end of the rotating shaft (3) away from the transmission shaft (10) passes through the front wall of the housing (1) and is fixedly connected to the gear (4). Two sets of partitions (15) are fixedly connected in a front-to-back arrangement on the inner side of the housing (1) near the front wall. The outer wall of the rotating shaft (3) passes through the two sets of partitions (15) and is rotatably connected to them. A brake disc (16) is fixedly connected between two sets of partitions (15). A brake pad (17) is provided on the side of each set of partitions (15) facing the brake disc (16). A magnetostrictive actuator (20) is fixedly connected on the side of the partition (15) away from the brake disc (16). A drive rod (21) is provided inside the magnetostrictive actuator (20). One end of the drive rod (21) facing the partition (15) passes through the inner wall of the partition (15) and is fixedly connected to the brake pad (17). A spring (22) is sleeved on the outer wall of the drive rod (21) between the partition (15) and the brake pad (17). An electric push rod (18) is fixedly connected on the side of the partition (15) away from the brake pad (17). A heat dissipation structure for heat dissipation is provided inside the housing (1).

2. The safety type servo industrial door operator according to claim 1, wherein: The heat dissipation structure includes a temperature sensor (23), a filter screen (6), a cooling fan (7), and a heat dissipation window (5). The temperature sensor (23) is fixedly connected to the inner rear wall of the housing (1) by a bracket. The filter screen (6) is fixedly connected to the rear wall of the housing (1) and close to the lower wall. The cooling fan (7) is fixedly connected to one end of the filter screen (6) facing the inside of the housing (1). The heat dissipation window (5) is fixedly connected to the front wall of the housing (1) and close to the upper wall.

3. The safety type servo industrial door operator according to claim 2, wherein: The outer wall of the drive shaft (10) is provided with a conductive slip ring (12) for supplying power to the magnetic powder clutch (14) during rotation.

4. The safety type servo industrial door operator according to claim 3, wherein: The controller (24) is fixedly connected to the upper inner wall of the housing (1). The servo motor (8), electric push rod (18), magnetostrictive actuator (20), cooling fan (7) and magnetic powder clutch (14) are all electrically connected to the controller (24).

5. The safety type servo industrial door operator according to claim 4, wherein: The electric push rod (18) has a push block (19) fixedly connected to its extended shaft end. The push block (19) is located in the space between the partition (15) and the brake pad (17).

6. The safety type servo industrial door operator according to claim 5, wherein: The drive shaft (10) is rotatably connected to the lower inner wall of the housing (1) via the first rotating seat (11), and the rotating shaft (3) is rotatably connected to the lower inner wall of the housing (1) via the second rotating seat (13), with the second rotating seat (13) located in front of the first rotating seat (11).

7. The safety type servo industrial door operator according to claim 6, wherein: The box (1) top fixed connection has rain cover (2), rain cover (2) covers box (1), gear (4) and servo motor (8).

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