A retarding mechanism brake for monitoring wear of a friction plate
Patent Information
- Application Number
- CN202620016856.6
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2026-01-08
- Publication Date
- 2026-10-30
- Estimated Expiration
- 2036-01-08
AI Technical Summary
[0003]针对现有技术方案中磨损量接近磨损极限值时不能自动报警的问题，本实用新型提供了一种监测摩擦片磨损的减速机制动器
[0010]本实用新型的有益效果是：根据制动器摩擦片允许的磨损极限值确定检测部的初始位置，使用中摩擦片磨损量不断增大，直至接近磨损极限值，此时检测部向右滑动至距离传感器的检测范围内，距离传感器检测到检测部后发出信号警告摩擦片磨损量已接近磨损极限值。
Smart Images
Figure CN224919680U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of brake technology, and in particular to a speed reducer brake for monitoring friction pad wear. Background Technology
[0002] Speed reducer brakes achieve deceleration and braking through friction and are widely used in industrial equipment. During use, the friction pads in the brake continuously wear down. Once the wear reaches or exceeds the set wear limit, braking performance drops significantly, requiring replacement of the friction pads to prevent equipment failure and safety accidents caused by excessive wear. However, currently, it is necessary to shut down the machine for inspection to detect friction pad wear. After disassembling the entire wheel-side speed reducer, screws are used to calculate the wear distance by screwing them into pre-drilled friction and wear detection holes. During normal operation, the automatic alarm is not triggered when the wear approaches the wear limit, which can easily lead to safety accidents. Utility Model Content
[0003] To address the problem that existing technologies fail to automatically alarm when wear approaches the wear limit, this invention provides a speed reducer brake for monitoring friction pad wear.
[0004] This utility model provides the following technical solution: a speed reduction brake for monitoring friction plate wear, comprising a cylinder body, a cylinder head disposed on the cylinder body, friction plates disposed within the cylinder body, and a piston slidably connected to the inner cavity of the cylinder body, and further comprising a wear monitoring device, the wear monitoring device comprising: Mounting hole, the mounting hole is provided on the cylinder head, the mounting hole is detachably connected to a spring seat, the spring seat is provided with a spring hole at one end facing the mounting hole, and the mounting hole is provided with a through hole communicating with the inside of the cylinder block; A distance sensor, wherein the distance sensor is disposed on the sidewall of the mounting hole; The test rod includes a sliding part and an extension part connected in sequence; the extension part extends into the spring hole and is fitted with a compression spring, and the extension part is also provided with a limiting part for locking the compression spring; the sliding part is slidably connected to the through hole, and the end of the sliding part contacts the piston; the sliding part slides along its own axial direction, and the axial direction of the sliding part is parallel to the axial direction of the cylinder; the sliding part is also provided with a detection part protruding or recessed on the surface of the sliding part on the side facing the distance sensor.
[0005] Preferably, the outer peripheral surface of the cylinder head is provided with a sensor mounting hole, and the sensor mounting hole extends to the side wall of the mounting hole to form an opening, and the distance sensor is disposed in the sensor mounting hole.
[0006] Preferably, the sliding part is cylindrical.
[0007] Preferably, the extension is also cylindrical, and the diameter of the sliding part is larger than that of the extension, with the step between the sliding part and the extension forming the limiting part.
[0008] Preferably, the detection part is a boss or groove provided on the surface of the sliding part.
[0009] Preferably, the distance sensor is electrically connected to a controller, and the controller is electrically connected to an alarm.
[0010] The beneficial effects of this utility model are: the initial position of the detection unit is determined according to the allowable wear limit value of the brake friction pad. During use, the wear of the friction pad continuously increases until it approaches the wear limit value. At this time, the detection unit slides to the right into the detection range of the distance sensor. After the distance sensor detects the detection unit, it sends a signal to warn that the wear of the friction pad is close to the wear limit value. Attached Figure Description
[0011] Figure 1 This is a schematic diagram of one embodiment of a speed reduction brake.
[0012] Figure 2 for Figure 1 A magnified view of a portion of the image.
[0013] Reference numerals: 11. Cylinder block; 12. Cylinder head; 13. Friction plate; 14. Piston; 21. Mounting hole; 22. Spring seat; 23. Spring hole; 30. Distance sensor; 31. Sensor mounting hole; 41. Sliding part; 42. Extension part; 43. Compression spring; 44. Detection part. Detailed Implementation
[0014] The embodiments of this utility model will be described in more detail below with reference to the accompanying drawings and reference numerals, so that those skilled in the art can implement them after reading this specification. It should be understood that the specific embodiments described herein are only for explaining this utility model and are not intended to limit this utility model.
[0015] This utility model provides, for example Figure 1 The illustrated deceleration brake for monitoring friction plate wear includes a cylinder body 11, a cylinder head 12 mounted on the cylinder body 11, a friction plate 13 disposed within the cylinder body 11, a piston 14 slidably connected to the inner cavity of the cylinder body 11, and a wear monitoring device. The structure and connection relationships of the cylinder body 11, cylinder head 12, friction plate 13, and piston 14 can all refer to relevant technologies. Under pressure, the piston 14 moves to the right to press against the friction plate 13 to achieve braking. During prolonged use, the friction plate 13 wears down, reducing its thickness, thus increasing the stroke of the piston 14 to the right during braking.
[0016] Please refer to Figure 1 ,2 The wear monitoring device includes a mounting hole, a distance sensor, and a test rod.
[0017] The mounting hole 21 is located on the side of the cylinder head 12 away from the piston 14. A spring seat 22 is detachably connected to the groove of the mounting hole 21. A spring hole 23 is provided at the end of the spring seat 22 facing the mounting hole 21. A through hole communicating with the inside of the cylinder body 11 is provided at the bottom of the groove of the mounting hole 21.
[0018] The cylinder head 12 has a sensor mounting hole 31 on its outer peripheral surface, and the sensor mounting hole 31 extends to the side wall of the mounting hole 21 to form an opening. The distance sensor 30 is disposed in the sensor mounting hole 31 and is used to monitor the change in distance between its probe and the outer surface of the test rod when the test rod slides. The distance sensor 30 is also electrically connected to a controller, and the controller is electrically connected to an alarm. The distance sensor 30 can be a photoelectric sensor, the controller can be a PLC, and the alarm can be an audible and visual alarm.
[0019] The test rod includes a sliding part 41 and an extension part 42 connected in sequence. The sliding part 41 is slidably connected to the through hole and slides along the axial direction of the cylinder body 11, in the same direction as the piston 14. A sealing ring is provided between the sliding part 41 and the through hole. The extension part 42 extends into the spring hole 23 and is fitted with a compression spring 43. The extension part 42 is also provided with a limiting part for locking the compression spring 43. The compression spring 43 is locked between the limiting part and the spring seat 22. Under its elastic force, the end of the sliding part 41 is always in contact with the piston 14 and slides with the movement of the piston 14.
[0020] In such Figure 2 In the illustrated embodiment, both the sliding portion 41 and the extension portion 42 are cylindrical, and the diameter of the sliding portion 41 is larger than that of the extension portion 42, so that the step between the sliding portion 41 and the extension portion 42 forms the limiting portion. In other embodiments, the sliding portion 41 and the extension portion 42 can also be in various shapes such as cuboids and triangular prisms, and the limiting portion can also be in the form of a pin, a boss, or other structures.
[0021] The sliding part 41 is further provided with a detection part 44 protruding or recessed from the surface of the sliding part 41 on the side facing the distance sensor 30. The detection part 44 may be an annular boss protruding from the surface of the sliding part 41 or an annular groove provided on the surface of the sliding part 41.
[0022] In such Figure 2In the illustrated embodiment, the sliding part 41 is cylindrical, with its axial direction parallel to that of the cylinder body 11, and the detection part 44 is a boss. When the test rod slides, the distance between the probe of the distance sensor 30 and the outer peripheral surface of the sliding part 41 remains constant; when the detection part 44 slides into the detection range of the distance sensor 30, the distance detected by the distance sensor 30 changes significantly. Therefore, the initial position of the detection part 44 can be determined according to the allowable wear limit of the brake friction pad. During use, the wear of the friction pad 13 continuously increases until it approaches the wear limit. At this time, the detection part 44 slides to the right into the detection range of the distance sensor 30. After the distance sensor 30 detects the detection part 44, the controller detects the distance change and activates the alarm to issue an audible and visual alarm, allowing the operator to stop the vehicle for maintenance in a timely manner. In other embodiments, the sliding part 41 can also take various shapes such as a cuboid or a triangular prism.
[0023] The above describes one or more embodiments of this utility model in a relatively specific and detailed manner, but it should not be construed as limiting the scope of this utility model patent. It should be noted that those skilled in the art can make various modifications and improvements without departing from the concept of this utility model, and these all fall within the protection scope of this utility model. Therefore, the protection scope of this utility model patent should be determined by the appended claims.
Claims
1. A speed reducer brake for monitoring friction pad wear, comprising a cylinder body, a cylinder head disposed on the cylinder body, friction pads disposed within the cylinder body, and a piston slidably connected to the inner cavity of the cylinder body, characterized in that, It also includes a wear monitoring device, which comprises: The mounting hole is provided on the cylinder head, and a spring seat is detachably connected to the mounting hole. A spring hole is provided at one end of the spring seat facing the mounting hole, and the mounting hole is provided with a through hole communicating with the inside of the cylinder block. A distance sensor, wherein the distance sensor is disposed on the sidewall of the mounting hole; The test rod includes a sliding part and an extension part connected in sequence; the extension part extends into the spring hole and is fitted with a compression spring, and the extension part is also provided with a limiting part for locking the compression spring; the sliding part is slidably connected to the through hole, and the end of the sliding part contacts the piston; the sliding part slides along its own axial direction, and the axial direction of the sliding part is parallel to the axial direction of the cylinder; the sliding part is also provided with a detection part protruding or recessed on the surface of the sliding part on the side facing the distance sensor.
2. The speed reducer brake for monitoring friction plate wear according to claim 1, characterized in that, The cylinder head has a sensor mounting hole on its outer peripheral surface, and the sensor mounting hole extends to the side wall of the mounting hole to form an opening, and the distance sensor is disposed in the sensor mounting hole.
3. A speed reducer brake for monitoring friction plate wear according to claim 1, characterized in that, The sliding part is cylindrical.
4. A speed reducer brake for monitoring friction plate wear according to claim 3, characterized in that, The extension is also cylindrical, and the diameter of the sliding part is larger than that of the extension. The step between the sliding part and the extension forms the limiting part.
5. A speed reducer brake for monitoring friction plate wear according to claim 3, characterized in that, The detection part is a boss or groove provided on the surface of the sliding part.
6. A speed reducer brake for monitoring friction plate wear according to claim 1, characterized in that, The distance sensor is electrically connected to a controller, and the controller is electrically connected to an alarm.