Servo controller overload protection mechanical brake device
By introducing a torque sensor and a mechanical braking device that uses a hydraulic cylinder to drive the brake pads into the servo controller, the problem of rapid braking when the servo motor is overloaded is solved, avoiding equipment damage and safety hazards, and extending equipment life.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- HUANGSHI KEWEI AUTOMATION & CONTROL CO LTD
- Filing Date
- 2025-06-23
- Publication Date
- 2026-06-09
AI Technical Summary
Existing overload protection measures for servo controllers cannot immediately stop the operation of the servo motor during an overload, causing the motor, transmission mechanism, or controlled equipment to be subjected to excessive stress in a short period of time, resulting in irreversible damage. Furthermore, simply cutting off the power supply may cause the equipment to stop suddenly and pose safety hazards.
A torque sensor is used to monitor overload conditions, and the controller controls the hydraulic cylinder to push the brake pads to lock the output shaft of the servo motor, blocking the transmission of overload force. Combined with a rubber buffer layer to reduce impact, rapid braking is achieved.
It effectively avoids damage to equipment caused by overload, extends equipment lifespan, improves system safety, and ensures stable equipment operation.
Smart Images

Figure CN224339371U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of servo controller overload protection technology, and in particular to a mechanical braking device for servo controller overload protection. Background Technology
[0002] In modern industrial automation, servo controllers, as the core equipment for controlling the precise operation of servo motors, are widely used in various high-precision, high-dynamic-response mechanical systems.
[0003] However, when the servo system encounters sudden load changes (such as mechanical jamming or transmission component failure), frequent start-stop, or long-term overload operation, the servo controller is prone to overload.
[0004] In the existing technology, the overload protection of servo controllers mainly relies on electrical protection measures, such as current detection, overload alarm and power cut-off. However, these electrical protections have certain limitations. They cannot immediately stop the operation of the servo motor at the moment of overload, causing the motor, transmission mechanism or controlled equipment to be subjected to excessive stress in a short period of time, resulting in irreversible damage. On the other hand, the protection method of simply cutting off the power supply may cause the running equipment to stop suddenly, resulting in workpiece scrapping, mechanical component impact damage, and even endangering the safety of operators.
[0005] Therefore, it is necessary to provide a mechanical braking device for overload protection of servo controllers to solve the above-mentioned technical problems. Utility Model Content
[0006] This utility model provides a mechanical braking device for overload protection of servo controllers, which solves the problem that the servo motor cannot be stopped immediately during overload, causing the motor, transmission mechanism or controlled equipment to be subjected to excessive stress in a short period of time, resulting in irreversible damage. The protection method of simply cutting off the power supply may cause the running equipment to stop suddenly, resulting in workpiece scrapping, mechanical component impact damage, or even endangering the safety of operators.
[0007] To solve the above-mentioned technical problems, this utility model provides a servo controller overload protection mechanical braking device, comprising: a base;
[0008] Mounting plates, two of which are fixedly mounted on both sides of the top of the base, a horizontal plate is fixedly mounted on the top of the mounting plates, and a control device is provided on one side of the outer surface of the mounting plates. The control device includes a lifting component, a pushing plate, a connecting plate, a brake pad, and a fixing block. The lifting component is fixedly mounted on the surface of the mounting plates, the fixing block is fixedly mounted on the output shaft end of the lifting component, the pushing plate is located on one side of the outer surface of the fixing block, the connecting plate is located on one side of the outer surface of the pushing plate, and the brake pad is fixedly mounted on one side of the outer surface of the connecting plate.
[0009] The mounting base is fixedly installed on one side of the top of the base. A servo motor is fixedly installed inside the mounting base, and a torque sensor is provided on the outer surface of the output shaft of the servo motor.
[0010] Preferably, a controller device is fixedly installed on the other side of the top of the base.
[0011] Preferably, the lifting component adopts a hydraulic cylinder structure.
[0012] Preferably, the brake pad has a rubber buffer layer on the side closest to the output shaft of the servo motor.
[0013] Preferably, a threaded hole is provided on one side of the top of the fixing block, and a connecting hole is provided on both sides of the outer surface of the fixing block, and a bolt is engaged in the internal thread of the threaded hole.
[0014] Preferably, limit rods are fixedly installed on both sides of the outer surface of the connecting plate, and limit holes are formed on the surface of the limit rods.
[0015] Preferably, the threaded hole and the connecting hole are interconnected.
[0016] Compared with related technologies, the servo controller overload protection mechanical braking device provided by this utility model has the following beneficial effects:
[0017] This utility model provides a mechanical braking device for overload protection of a servo controller. A torque sensor detects excessive torque and transmits the information to the controller. The controller then moves the output shaft of the lifting component to engage the brake pads, locking the output shaft of the servo motor and stopping its rotation. This blocks the transmission of overload force and allows for rapid stopping of the output shaft, preventing instantaneous damage to the equipment due to overload. The brake pad design extends the service life of the protected equipment and improves system safety. It can be applied in various fields such as industrial automation, CNC machine tools, and robotics, enhancing the practicality of braking devices. Attached Figure Description
[0018] Figure 1 A schematic diagram of the structure of a first embodiment of a servo controller overload protection mechanical braking device provided by this utility model;
[0019] Figure 2 for Figure 1 The enlarged schematic diagram at point A is shown below;
[0020] Figure 3 A schematic diagram of the structure of a second embodiment of a servo controller overload protection mechanical braking device provided by this utility model;
[0021] Figure 4 for Figure 3The enlarged schematic diagram at point B is shown.
[0022] The following are the labels in the diagram: 1. Base, 2. Mounting plate, 3. Horizontal plate, 4. Control device, 41. Lifting component, 42. Pushing plate, 43. Connecting plate, 44. Brake pad, 45. Fixing block, 5. Mounting seat, 6. Servo motor, 7. Torque sensor, 8. Controller device, 9. Threaded hole, 10. Connecting hole, 11. Limiting rod, 12. Limiting hole, 13. Bolt. Detailed Implementation
[0023] The present invention will be further described below with reference to the accompanying drawings and embodiments.
[0024] First Embodiment
[0025] Please refer to the following: Figure 1 and Figure 2 ,in, Figure 1 A schematic diagram of the structure of a first embodiment of a servo controller overload protection mechanical braking device provided by this utility model; Figure 2 for Figure 1 The enlarged schematic diagram at point A is shown.
[0026] A servo controller overload protection mechanical braking device includes: a base 1;
[0027] Mounting plate 2, two mounting plates 2 are respectively fixedly installed on both sides of the top of the base 1. A horizontal plate 3 is fixedly installed on the top of the mounting plate 2. A control device 4 is provided on one side of the outer surface of the mounting plate 2. The control device 4 includes a lifting member 41, a pushing plate 42, a connecting plate 43, a brake pad 44, and a fixing block 45. The lifting member 41 is fixedly installed on the surface of the mounting plate 2. The fixing block 45 is fixedly installed on the output shaft end of the lifting member 41. The pushing plate 42 is provided on one side of the outer surface of the fixing block 45. The connecting plate 43 is provided on one side of the outer surface of the pushing plate 42. The brake pad 44 is fixedly installed on one side of the outer surface of the connecting plate 43.
[0028] Mounting base 5 is fixedly installed on one side of the top of the base 1. A servo motor 6 is fixedly installed inside the mounting base 5. A torque sensor 7 is provided on the outer surface of the output shaft of the servo motor 6.
[0029] A controller device 8 is fixedly installed on the other side of the top of the base 1.
[0030] The lifting component 41 adopts a hydraulic cylinder structure.
[0031] A rubber buffer layer is provided on the side of the brake pad 44 near the output shaft of the servo motor 6.
[0032] Mounting plate 2 is mounted on the surface of base 1 with screws for easy assembly and disassembly.
[0033] The controller device 8 has an internal circuit board for receiving and transmitting preset overload thresholds.
[0034] The working principle of the servo controller overload protection mechanical braking device provided by this utility model is as follows:
[0035] During operation, the torque sensor 7 first monitors the output shaft torque. When the torque sensor 7 detects that the torque exceeds the standard, it transmits the information to the controller device 8. The controller device 8 controls the output shaft of the lifting component 41 to move. The output shaft of the lifting component 41 drives the push plate 42, the connecting plate 43 and the brake pad 44 to move towards the output shaft of the servo motor 6. The two sets of push brake pads 44 lock the output shaft of the servo motor 6.
[0036] Compared with related technologies, the servo controller overload protection mechanical braking device provided by this utility model has the following beneficial effects:
[0037] This utility model provides a mechanical braking device for overload protection of a servo controller. When the torque exceeds the limit, the torque sensor 7 detects it and transmits the information to the controller device 8. The controller device 8 controls the output shaft of the lifting component 41 to move and push the brake pad 44 to lock the output shaft of the servo motor 6, stopping the rotation of the servo motor output shaft and blocking the transmission of overload force. It can quickly stop the output shaft and avoid damage to the equipment caused by overload. The design of the brake pad 44 extends the service life of the protected equipment and improves the safety of the system. It can be applied to multiple fields such as industrial automation, CNC machine tools, and robots, improving the practicality of braking equipment.
[0038] Second Embodiment
[0039] Please refer to the following: Figure 3 and Figure 4 Based on the servo controller overload protection mechanical braking device provided in the first embodiment of this application, the second embodiment of this application proposes another servo controller overload protection mechanical braking device. The second embodiment is merely a preferred embodiment of the first embodiment, and the implementation of the second embodiment will not affect the separate implementation of the first embodiment.
[0040] Specifically, the second embodiment of this application provides a servo controller overload protection mechanical braking device in that a threaded hole 9 is provided on one side of the top of the fixing block 45, and a connecting hole 10 is provided on both sides of the outer surface of the fixing block 45. A bolt 13 is engaged in the internal thread of the threaded hole 9.
[0041] Limiting rods 11 are fixedly installed on both sides of the outer surface of the connecting plate 43, and limiting holes 12 are formed on the surface of the limiting rods 11.
[0042] The threaded hole 9 and the connecting hole 10 are interconnected.
[0043] After the limiting rod 11 is inserted into the connecting hole 10, when the connecting plate 43 is attached to the surface of the fixing block 45, the limiting hole 12 and the threaded hole 9 are aligned.
[0044] The working principle of the servo controller overload protection mechanical braking device provided by this utility model is as follows:
[0045] During operation, the connecting plate 43 is first attached to the surface of the fixing block 45, the limiting rod 11 is embedded into the interior of the connecting hole 10, the threaded engagement hole 9 of the bolt 13 is embedded into the interior of the connecting hole 10, and the bottom end of the bolt 13 is embedded into the interior of the limiting hole 12 to restrict the limiting rod 11, and the connecting plate 43 and the brake pad 44 are assembled.
[0046] Compared with related technologies, the servo controller overload protection mechanical braking device provided by this utility model has the following beneficial effects:
[0047] This utility model provides a mechanical braking device for overload protection of a servo controller. The device uses a bolt 13 to engage with the threaded hole 9 and insert into the limiting hole 12, thereby restricting the limiting rod 11 inside the connecting hole 10. This allows the connecting plate 43 and the brake pad 44 to be mounted on the surface of the fixing block 45. This device has a simple structure, is highly practical, and facilitates the disassembly and assembly of the brake pad 44. It also makes it easy to remove worn brake pads 44 and replace them with new ones, thus facilitating the maintenance of the braking equipment and improving the practicality of the device.
[0048] 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 mechanical braking device for overload protection of a servo controller, characterized in that, include: Base; Mounting plates, two of which are fixedly mounted on both sides of the top of the base, a horizontal plate is fixedly mounted on the top of the mounting plates, and a control device is provided on one side of the outer surface of the mounting plates. The control device includes a lifting component, a pushing plate, a connecting plate, a brake pad, and a fixing block. The lifting component is fixedly mounted on the surface of the mounting plates, the fixing block is fixedly mounted on the output shaft end of the lifting component, the pushing plate is located on one side of the outer surface of the fixing block, the connecting plate is located on one side of the outer surface of the pushing plate, and the brake pad is fixedly mounted on one side of the outer surface of the connecting plate. The mounting base is fixedly installed on one side of the top of the base. A servo motor is fixedly installed inside the mounting base, and a torque sensor is provided on the outer surface of the output shaft of the servo motor.
2. The servo controller overload protection mechanical braking device according to claim 1, characterized in that, A controller device is fixedly installed on the other side of the top of the base.
3. The servo controller overload protection mechanical braking device according to claim 1, characterized in that, The lifting component adopts a hydraulic cylinder structure.
4. The servo controller overload protection mechanical braking device according to claim 1, characterized in that, The brake pads have a rubber buffer layer on the side closest to the output shaft of the servo motor.
5. The servo controller overload protection mechanical braking device according to claim 1, characterized in that, A threaded hole is provided on one side of the top of the fixing block, and a connecting hole is provided on both sides of the outer surface of the fixing block. A bolt is engaged with the internal thread of the threaded hole.
6. The servo controller overload protection mechanical braking device according to claim 1, characterized in that, Limiting rods are fixedly installed on both sides of the outer surface of the connecting plate, and limiting holes are formed on the surface of the limiting rods.
7. A servo controller overload protection mechanical braking device according to claim 5, characterized in that, The threaded hole and the connecting hole are interconnected.