A coupling with a braking device

Abstract

The present application discloses a coupling with a braking device, including a device body, the device body having an active end and a driven end; a cam arm force-enhancing mechanism, the cam arm force-enhancing mechanism including a movable disk, a plurality of cam arms and a plurality of cam reset springs, wherein the movable disk is installed between the active end and the driven end, a plurality of cam arms are equidistantly installed on the movable disk, and a plurality of cam reset springs are installed on the movable disk; and a brake assembly, including a top pressure plate and a brake disc, wherein the top pressure plate is installed on the active end, the brake disc is installed on the driven end, one end of the cam arm is connected to the top pressure plate, and the other end of the cam arm is connected to the brake disc. Through the technical solution provided by the present invention, the present application has the effect of transmitting motion and torque, and can also achieve rapid stopping or deceleration of the shaft through the brake wheel.

Description

Technical Field

[0001] The invention relates to the technical field of a coupling, and in particular to a coupling with a braking device. Background Art

[0002] At present, a coupling is a mechanical component used to connect two or more shafts (usually rotating shafts) to transmit torque and rotational motion. It allows a certain axial, radial and angular deviation between the shafts, thereby reducing vibration and shock and extending the service life of the mechanical system. Couplings are very common in various industrial applications, such as automobiles, ships, aviation, machinery manufacturing, petrochemicals, etc.

[0003] Because the brake function of the coupling is sometimes also used as part of the overload protection mechanism, it helps prevent the system from being damaged due to overload. Without a brake, if the coupling does not have a braking function, the coupling may not be able to provide this protection. And in some applications, such as cranes or other heavy machinery, a coupling without a brake may not be able to stop in time in an emergency, increasing the risk of accidents.

[0004] The existing brake load-limiting coupling has the functions of a coupling, a load limiter and a brake, and can achieve the effect of a coupling transmission. It can protect the machine when it is overloaded. However, the application scope of the existing brake coupling is greatly limited. In applications where the load is not large and the lifting mechanism is used, if the brake device cannot contact, it will cause other problems such as overall heating of the coupling. Summary of the invention

[0005] An advantage of the present invention is that it provides a coupling with a braking device, which can transmit motion and torque and can also achieve the effect of quickly stopping or decelerating the shaft through a braking wheel.

[0006] To achieve at least one of the above advantages of the present invention, the present invention provides a coupling with a braking device, comprising an equipment body, wherein the equipment body has a driving end and a driven end;

[0007] A cam arm force amplification mechanism, the cam arm force amplification mechanism comprising a moving plate, a plurality of cam arms and a plurality of cam reset springs, wherein the moving plate is installed between the active end and the driven end, the plurality of cam arms are installed on the moving plate at equal distances, the plurality of cam reset springs are installed on the moving plate, and the plurality of cam arms and the plurality of cam reset springs are arranged in one-to-one correspondence;

[0008] A brake assembly, comprising a pressure plate and a brake disc, wherein the pressure plate is mounted on the active end, the brake disc is mounted on the driven end, one end of the cam arm is connected to the pressure plate, and the other end of the cam arm is connected to the brake disc, and when the pressure plate moves, the positional relationship between the cam arm and the brake disc is changed;

[0009] The top pressure plate has an inclined sliding surface and an arc-shaped clamping surface, the inclined sliding surface is away from the active end, the height of the inclined sliding surface gradually increases from the side away from the active end to the side close to the active end, the arc-shaped clamping surface is connected to the inclined sliding surface, the cam arm has a brake part, a lever part and a sliding part, the lever part is rotatably mounted on the movable plate, the sliding part is close to the top pressure plate, and the brake part is close to the brake disc;

[0010] a supporting tube, the supporting tube being mounted on the device body;

[0011] A driving end bearing seat and a driven end bearing seat, the driving end bearing seat is installed on the driving end, the driven end bearing seat is installed on the driven end, and the driving end bearing seat and the driven end bearing seat are both connected to the support tube;

[0012] a manual opening device, the manual opening device is mounted on the support tube, the manual opening device comprises a knob block, an adjustment block and a rotating rod, wherein the knob block is mounted on the support tube, the rotating rod is rotatably mounted on the support tube, and the adjustment block is mounted on one end of the rotating rod away from the knob block;

[0013] The adjusting block has two planes and two arc surfaces. During the rotation of the adjusting block, the plane of the adjusting block can be parallel to the top pressure plate, or the arc surface of the adjusting block can abut against the top pressure plate.

[0014] Through the above technical solution, the cam arm force-enhancing mechanism and the brake assembly are installed on the main body of the equipment. When the coupling needs to be braked, the cam arm force-enhancing mechanism applies external force to the brake assembly, so that the coupling can be quickly stopped or decelerated. The top pressure plate can move on the active end, thereby changing the cam arm to approach or move away from the brake disc. The cam reset spring can further give the cam arm a certain thrust, so that the cam arm can be quickly located at the braking position. Under normal circumstances, the cam arm force-enhancing mechanism is always close to the brake assembly. The support cylinder is installed on the main body of the equipment to support the entire coupling and improve the safety of each component in the coupling. The active end bearing seat and the driven end bearing seat are installed at the active end and the driven end respectively to ensure that the bearing can be correctly installed and maintained in the predetermined position, so as to achieve the normal operation of the machine equipment. The manual opening device is installed on the support cylinder, and the manual opening device provides a certain flexibility and adaptability, which is convenient for the operator to operate the braking function of the coupling. The adjustment block has two planes and two arc surfaces. During the rotation of the adjustment block, the plane of the adjustment block can be parallel to the top pressure plate, or the arc surface of the adjustment block can abut against the top pressure plate. When the plane of the adjusting block is parallel to the top pressure plate, the adjusting block cannot push the top pressure plate to move upward. When the arc surface of the adjusting block abuts against the top pressure plate, it can push the top pressure plate to change its position, thereby achieving a braking effect.

[0015] According to an embodiment of the present invention, the brake assembly further comprises a plurality of guide rods and a plurality of brake springs, wherein the plurality of guide rods are movably mounted on the pressure plate, and the plurality of brake springs are sleeved on the guide rods.

[0016] Through the above technical solution, when the guide rod moves, the brake spring is deformed, thereby driving the movement of the pressure plate. When the pressure plate moves, it can drive the cam arm to rotate at an angle, and finally change the position of the cam arm to achieve the effect of braking or not braking.

[0017] According to one embodiment of the present invention, the top pressure plate has an inclined sliding surface and an arc-shaped clamping surface, the inclined sliding surface is away from the active end, the inclination angle of the inclined sliding surface gradually increases from the side away from the active end to the side close to the active end, and the arc-shaped clamping surface is connected to the inclined sliding surface.

[0018] Through the above technical solution, the inclined sliding surface and the arc-shaped snap-in surface are connected to each other. When the cam arm changes its position, it can move along the inclined sliding surface and finally be located in the arc-shaped snap-in surface. When the cam arm slides along the inclined sliding surface, it can slide smoothly to ensure smooth operation of the coupling.

[0019] According to an embodiment of the present invention, the cam arm has a braking portion, a lever portion and a sliding portion, the lever portion is rotatably mounted on the movable disk, the sliding portion is close to the pressure disk, and the braking portion is close to the brake disk.

[0020] Through the above technical solution, the braking part, the lever part and the sliding part cooperate with each other, the sliding part is located at the top pressure plate, the braking part is located at the brake disk, and the lever part is connected to the movable disk. When the position of the sliding part changes relatively, the lever part rotates on the movable disk, so that the braking part can approach or move away from the brake disk.

[0021] According to an embodiment of the present invention, the brake assembly further comprises a friction plate, wherein the friction plate is mounted on the driven end, and the friction plate is mounted on a side of the brake disc away from the driving end.

[0022] Through the above technical solution, when the brake disc is close to the friction plate, friction is generated between the brake disc and the friction plate to achieve the braking effect. The friction plate is fan-shaped and can achieve the effect of heat dissipation.

[0023] According to one embodiment of the present invention, it also includes an overheating protection component, which includes at least one temperature sensor, at least one control module, at least one heat dissipation device and an alarm device, wherein the temperature sensor is installed on the inner side of the support tube, the control module is electrically connected to the temperature sensor, the heat dissipation device is electrically connected to the control module, the alarm device is electrically connected to the control module, and the alarm device is installed on the outer side of the support tube.

[0024] Through the above technical solution, a temperature sensor can be installed on the inner side of the support tube of the coupling to monitor the working temperature of the coupling in real time to prevent equipment damage caused by overheating and ensure that the equipment can automatically shut down under abnormal circumstances to protect the safety of equipment and personnel. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] Figure 1 The schematic diagram of the structure of the coupling with the braking device of the present invention is shown.

[0026] Figure 2 A schematic diagram of the internal structure of the hidden support cylinder of the coupling with a braking device according to the present invention is shown.

[0027] Figure 3 A cross-sectional view of a coupling with a braking device according to the present invention is shown.

[0028] Figure 4 Shows Figure 3 An enlarged schematic diagram of part A.

[0029] Figure 5A structural schematic diagram of the coupling with a braking device according to the present invention is shown from another perspective.

[0030] Figure 6 An exploded schematic diagram of a manual opening device of a coupling with a braking device according to the present invention is shown.

[0031] Figure 7 A schematic flow chart of an overheat protection assembly of a coupling with a braking device according to the present invention is shown.

[0032] Description of reference numerals:

[0033] 10. Equipment body; 11. Active end; 12. Driven end; 21. Moving disk; 22. Cam arm; 221. Sliding part; 222. Lever part; 223. Braking part; 23. Cam reset spring; 30. Braking assembly; 31. Pressure plate; 311. Annular give-way groove; 3111. Inclined sliding surface; 3112. Arc-shaped clamping surface; 32. Guide rod; 33. Braking spring; 34. Braking disk; 35. Friction plate; 40. Support cylinder; 50. Manual opening device; 51. Knob block; 52. Rotating rod; 53. Adjusting block; 60. Active bearing seat; 70. Driven bearing seat; 80. Mounting base; 90. Overheat protection assembly; 91. Temperature sensor; 92. Control module; 93. Heat dissipation device; 94. Alarm device. DETAILED DESCRIPTION

[0034] The following description is used to disclose the present invention so that those skilled in the art can implement the present invention. The preferred embodiments described below are only examples, and those skilled in the art can think of other obvious variations. The basic principles of the present invention defined in the following description can be applied to other embodiments, variations, improvements, equivalents, and other technical solutions that do not deviate from the spirit and scope of the present invention.

[0035] Those skilled in the art should understand that, in the disclosure of the present invention, the terms "longitudinal", "lateral", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside" and the like indicating the orientation or position relationship are based on the orientation or position relationship shown in the drawings, which are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operate in a specific orientation. Therefore, the above terms should not be understood as limiting the present invention.

[0036] It is to be understood that the term "one" should be understood as "at least one" or "one or more", that is, in one embodiment, the number of an element may be one, while in another embodiment, the number of the element may be multiple, and the term "one" should not be understood as a limitation on the quantity.

[0037] refer to Figures 1 to 7 According to a preferred embodiment of the present invention, a coupling with a braking device will be described in detail below. The coupling with a braking device includes a device body 10, a cam arm force amplification mechanism and a brake assembly 30, wherein the device body 10 has an active end 11 and a driven end 12, and the cam arm force amplification mechanism is installed between the active end 11 and the driven end 12 of the device body 10, and the brake assembly 30 is connected to the cam arm force amplification mechanism. In this way, through the mutual cooperation of the cam arm force amplification mechanism and the brake assembly 30, the coupling can transmit motion and torque, and can also achieve the effect of quickly stopping or decelerating the shaft. Through the design of the cam arm force amplification mechanism and the brake assembly 30, the coupling can brake quickly and effectively when needed, thereby improving the control ability of the shaft rotation.

[0038] It is worth mentioning that the active end 11 of the device body 10 is connected to an active member, and the passive end 12 is connected to a passive member. In this embodiment, the active member is implemented as a motor, and the passive member is implemented as a reducer.

[0039] Specifically, the brake assembly 30 includes a pressure plate 31, a plurality of guide rods 32, and a plurality of brake springs 33, wherein the pressure plate 31 is rotatably mounted on the active part of the device body 10, a plurality of guide rods 32 are equidistantly mounted on the pressure plate 31 and pass through the pressure plate 31, a plurality of brake springs 33 are sleeved on the guide rods 32, and one end of the plurality of brake springs 33 abuts against the pressure plate 31. In this way, when the guide rods 32 move in the pressure plate 31, the brake springs 33 are compressed, so that the brake springs 33 generate elastic force.

[0040] Furthermore, the brake assembly 30 also includes at least one brake disc 34 and at least one friction plate 35 . The brake disc 34 and the friction plate 35 are both mounted on the follower of the driven end 12 of the equipment body 10 , and the guide rod 32 passes through the brake disc 34 .

[0041] In this embodiment, two brake discs 34 are provided, and the two brake discs 34 are respectively installed on both sides of the friction plate 35. That is to say, when the brake disc 34 installed above the friction plate 35 moves toward the side close to the friction plate 35, one of the brake discs 34 squeezes the friction plate 35, and the friction plate 35 approaches the other brake disc 34 under the action of thrust, and the two brake discs 34 squeeze the friction plate 35, thereby finally achieving a braking effect.

[0042] It is worth mentioning that the stopper is provided on the guide rod 32. When the brake spring 33 is in a compressed state, the stopper of the guide rod 32 is away from the brake disc 34. When the brake spring 33 is not compressed, the stopper of the guide rod 32 is in contact with the brake disc 34. In this way, the movement displacement of the guide rod 32 can be limited to be kept within a predetermined range, preventing the guide rod 32 from moving too far and causing damage to the coupling.

[0043] That is to say, in this embodiment, the friction plate 35 is not an annular plate, but a fan-shaped plate, so that better heat dissipation performance can be obtained. Because a large amount of heat is generated during braking, if the heat cannot be dissipated in time, the braking effect will be reduced, so good heat dissipation is crucial to maintaining braking performance. In addition, the fan-shaped design makes the friction plate 35 wear more evenly during use, which can extend the service life of the friction plate 35.

[0044] Specifically, the cam arm force-increasing mechanism includes a moving plate 21, a plurality of cam arms 22, and a plurality of cam reset springs 23, wherein the moving plate 21 is installed at the connection between the active member and the driven member, the plurality of cam arms 22 are equidistantly installed on the moving plate 21, and the other end of the cam arm 22 is connected to the top pressure plate 31, and the plurality of cam reset springs 23 are installed on the moving plate 21. The equidistant installation of the cam arms 22 and the cam reset springs 23, and the cooperation of the top pressure plate 31 and the brake disc 34 make the entire brake device compact in structure and occupy a small space.

[0045] Further, the cam arm 22 has a sliding portion 221, a lever portion 222 and a brake portion 223, wherein the lever portion 222 is rotatably mounted on the movable disk 21, the sliding portion 221 has an arc surface, the arc surface abuts against the top pressure disk 31, and the brake portion 223 abuts against the brake disk 34. In this embodiment, the top pressure disk 31 is provided with an annular clearance groove 311 on one side close to the cam arm 22, and the annular clearance groove 311 has an inclined sliding surface 3111 and an arc-shaped clamping surface 3112, the inclination angle of the inclined sliding surface 3111 gradually increases from the side away from the active end 11 to the side close to the active end 11, and the arc-shaped clamping surface 3112 is connected to the inclined sliding surface 3111. The arc surface of the cam arm 22 can slide along the inclined sliding surface 3111 and finally slide into the arc-shaped clamping surface 3112.

[0046] When the lever portion 222 of the cam arm 22 rotates, the braking portion 223 is driven to rotate together, so that the height positions of the sliding portion 221 and the braking portion 223 tend to be in the same plane, or the height positions of the sliding portion 221 and the braking portion 223 have a certain height difference, so that the braking portion 223 gradually separates from or fits with the brake disc 34, and finally achieves the effect of transmitting torque or achieving braking.

[0047] In this way, when the brake spring 33 is compressed, the block of the guide rod 32 is separated from the brake disc 34, and the sliding portion 221 of the cam arm 22 slides along the inclined sliding surface 3111 of the pressure plate 31. At this time, the lever portion 222 of the cam arm 22 rotates, driving the brake portion 223 of the cam arm 22 to fit with the brake disc 34, thereby realizing the braking stop and deceleration of the coupling.

[0048] Furthermore, the cam reset spring piece 23 is arranged on the side of the lever portion 222 close to the cam arm 22, and the cam reset spring piece 23 has a swinging portion and an abutting portion. The swinging portion of the cam reset spring piece 23 is rotatably mounted on the movable disk 21, and the abutting portion is integrally formed with the swinging portion. In this embodiment, the swinging portion is in a vertical state when not affected by external force, and the cross-sectional shape of the abutting portion is semicircular, and the opening is close to the cam arm 22.

[0049] In this way, when the cam arm 22 moves toward the side close to the cam reset spring piece 23, the cam reset spring piece 23 is squeezed, so that the cam reset spring piece 23 is deformed, the swinging part is deformed, and the abutting part contacts and slides with the cam arm 22, which can reduce the friction. When the cam arm 22 is close to the cam reset spring piece 23, the cam reset spring piece 23 generates elastic force to give the cam arm 22 a certain thrust, so that the cam arm 22 abuts against the brake disc 34 to achieve the braking effect.

[0050] Furthermore, the coupling with a braking device also includes a support tube 40 , and the support tube 40 is sleeved on the outside of the equipment body 10 .

[0051] Further, the coupling with a braking device also includes a manual opening device 50, which is installed in the support tube 40, and includes a knob block 51, a rotating rod 52 and an adjusting block 53, wherein the knob block 51 is rotatably installed in the support tube 40, the rotating rod 52 is connected to the knob block 51, and the rotating rod 52 passes through the support tube 40, and the adjusting block 53 is installed at one end of the rotating rod 52 away from the knob block 51. In this embodiment, the adjusting block 53 has two planes and two arc surfaces, and the adjusting block 53 is located below the top pressure plate 31. Through the manual opening device 50, the operator can adjust the braking force as needed, which provides a certain degree of flexibility and adaptability.

[0052] When the plane of the adjusting block 53 rotates to be parallel to the top pressure plate 31, the adjusting block 53 is not in contact with the top pressure plate 31; when the arc surface of the adjusting block 53 rotates to be close to the top pressure plate 31, the adjusting block 53 abuts against the top pressure plate 31. The adjusting block 53 can give a certain thrust to the top pressure plate 31, so that the top pressure plate 31 moves to the side away from the adjusting block 53.

[0053] The operator manually rotates the knob block 51, thereby driving the rotation of the rotating rod 52, and finally adjusting the angle and position of the adjusting block 53, so that the adjusting block 53 and the top pressure plate 31 are in a contact or non-contact state, and finally changing the position height of the top pressure plate 31. It is worth mentioning that when the plane of the adjusting block 53 rotates to the arc surface, the arc surface gradually contacts the top pressure plate 31, which can reduce friction, and as the curvature of the arc surface changes, the top pressure plate 31 gradually rises or falls, and can move more smoothly, thereby improving the safety of the coupling.

[0054] When the arc surface of the adjustment block 53 contacts the pressure plate 31, the height of the pressure plate 31 is increased, so that the cam arm 22 rotates to a position separated from the brake disc 34. At this time, the cam arm 22 is away from the brake disc 34, realizing the transmission function of the coupling.

[0055] Furthermore, the active member and the driven member mesh with each other, and both the active member and the driven member are provided with a helical meshing surface. When the active member rotates, the helical surface of the active member produces relative slip along the helical surface of the driven member in the direction of the helical lead angle, and a force is generated due to the action of the helical lead angle, pushing the active member or the driven member to move axially outward; when the active member stops rotating, the active member has no torque output, and the force generated by the helical meshing surface is released. Under the action of external force, the active member or the driven member moves inward and resets.

[0056] Furthermore, the coupling with a braking device further includes an active bearing seat 60 and a driven bearing seat 70, wherein the active bearing seat 60 is mounted on the active part and the driven bearing seat 70 is mounted on the driven part, so as to ensure that the bearings can be correctly installed and maintained in the predetermined position, thereby realizing the normal operation of the machine equipment.

[0057] Furthermore, the coupling with a braking device also includes a mounting base 80, which is mounted on the outside of the support tube 40. A plurality of mounting holes are provided on the mounting base 80 for fixing the coupling to a working position.

[0058] Furthermore, the coupling with a braking device further includes an overheat protection component 90, which is installed inside the support cylinder 40. The overheat protection component 90 can ensure that the equipment can automatically shut down in abnormal situations to protect the safety of equipment and personnel.

[0059] Specifically, the overheating protection device 90 includes at least one temperature sensor 91, at least one control module 92, at least one heat dissipation device 93 and an alarm device 94. The temperature sensor 91 is installed on the inner wall of the support tube 40, the control module 92 is electrically connected to the temperature sensor 91, the heat dissipation device 93 is electrically connected to the control module 92, and the alarm device 94 is electrically connected to the control module 92. The alarm device 94 is installed on the outer wall of the support tube 40. In this embodiment, the alarm device 94 can be implemented as an indicator light or a buzzer.

[0060] Specifically, the control module 92 includes a comparator and a relay, and the comparator and the relay are electrically connected. The comparator is used to compare the signal of the temperature sensor 91 with a preset threshold value. When the temperature exceeds the threshold value, the relay will cut off the power supply or change the circuit state to prevent the device from being damaged by overheating.

[0061] That is, when the temperature value received by the temperature sensor 91 is greater than the predetermined temperature value, the temperature sensor sends a signal to the control module 92, the control module 92 receives and processes the signal, and then controls the heat dissipation device 93 to work. In this embodiment, the heat dissipation device 93 can be implemented as a heat dissipation fan, and the control module 92 sends the processed signal to the alarm device 94, and the alarm device 94 emits light or sound to warn the operator. These parts work together to achieve effective protection against overheating of the equipment.

[0062] Furthermore, the coupling with a braking device also includes a remote monitoring component, which includes at least one sensor, a data acquisition and processing component, and a monitoring component, wherein the sensor is installed at a predetermined position. In this embodiment, the sensor can be set as a temperature sensor, a vibration sensor, a displacement sensor, etc., to collect the operating state parameters of the coupling in real time. The data acquisition and processing component is communicatively connected to the sensor, and the monitoring component is connected to the data acquisition and processing component.

[0063] Specifically, the data acquisition and processing component converts the analog signals collected by the sensor into digital signals, performs preliminary data analysis and processing, and transmits the processed data to the cloud server or local data center using wired networks (such as Ethernet) or wireless network technologies (such as Wi-Fi, 4G / 5G, etc.).

[0064] Specifically, the monitoring component includes a display screen. In this embodiment, the display screen can be a computer display screen and / or a mobile phone display screen. The operator can access it through terminal devices such as computers, mobile phones or tablets to view the operating status, parameter curves, alarm information, etc. of the coupling in real time.

[0065] In summary, when the active member is connected to the driven member, the brake spring 33 is compressed, pushing the top pressure plate 31 to move, and at this time, the cam arm 22 rotates and fits with the brake disc 34. The cam arm 22 and the brake disc 34 generate friction after contact, and the cam arm 22 gives the brake disc 34 a certain thrust, so that the brake disc 34 and the friction plate 35 fit more closely, generating a greater friction force to achieve the braking effect. At this time, the braking effect is achieved. When the brake spring 33 is not compressed, the cam arm 22 rotates to separate from the brake disc 34, and the coupling operates normally; and the operator can manually rotate the manual opening device 50 to achieve the manual braking effect. This coupling with a braking device can provide a reliable braking function while ensuring transmission efficiency through its unique design, and is suitable for industrial applications with high requirements for braking performance.

[0066] It should be understood by those skilled in the art that the embodiments of the present invention described above and shown in the accompanying drawings are only examples and do not limit the present invention. The advantages of the present invention have been fully and effectively achieved. The functional and structural principles of the present invention have been demonstrated and explained in the embodiments, and the embodiments of the present invention may be deformed or modified in any way without departing from the principles.

Claims

1. A coupling with a braking device, characterized in that: include: A device body, wherein the device body has a driving end and a driven end; A cam arm force amplification mechanism, the cam arm force amplification mechanism comprising a moving plate, a plurality of cam arms and a plurality of cam reset springs, wherein the moving plate is installed between the active end and the driven end, the plurality of cam arms are installed on the moving plate at equal distances, the plurality of cam reset springs are installed on the moving plate, and the plurality of cam arms and the plurality of cam reset springs are arranged in one-to-one correspondence; A brake assembly, comprising a pressure plate and a brake disc, wherein the pressure plate is mounted on the active end, the brake disc is mounted on the driven end, one end of the cam arm is connected to the pressure plate, and the other end of the cam arm is connected to the brake disc, and when the pressure plate moves, the positional relationship between the cam arm and the brake disc is changed; The top pressure plate has an inclined sliding surface and an arc-shaped clamping surface, the inclined sliding surface is away from the active end, the height of the inclined sliding surface gradually increases from the side away from the active end to the side close to the active end, the arc-shaped clamping surface is connected to the inclined sliding surface, the cam arm has a braking part, a lever part and a sliding part, the lever part is rotatably mounted on the movable plate, the sliding part is close to the top pressure plate, and the braking part is close to the brake plate; a supporting tube, the supporting tube being mounted on the device body; A driving end bearing seat and a driven end bearing seat, the driving end bearing seat is installed on the driving end, the driven end bearing seat is installed on the driven end, and the driving end bearing seat and the driven end bearing seat are both connected to the support tube; a manual opening device, the manual opening device is mounted on the support tube, the manual opening device comprises a knob block, an adjustment block and a rotating rod, wherein the knob block is mounted on the support tube, the rotating rod is rotatably mounted on the support tube, and the adjustment block is mounted on an end of the rotating rod away from the knob block; and The adjusting block has two planes and two arc surfaces. During the rotation of the adjusting block, the plane of the adjusting block can be parallel to the top pressure plate, or the arc surface of the adjusting block can abut against the top pressure plate.

2. The coupling with a braking device according to claim 1, characterized in that: The brake assembly further comprises a plurality of guide rods and a plurality of brake springs, wherein the plurality of guide rods are movably mounted on the pressure plate, and the plurality of brake springs are sleeved on the guide rods.

3. The coupling with a braking device according to claim 1, characterized in that: The brake assembly further comprises a friction plate, which is mounted on the driven end and on a side of the brake disc away from the driving end.

4. The coupling with a braking device according to claim 1, characterized in that: It also includes an overheating protection component, which includes at least one temperature sensor, at least one control module, at least one heat dissipation device and an alarm device, wherein the temperature sensor is installed on the inner side of the support tube, the control module is electrically connected to the temperature sensor, the heat dissipation device is electrically connected to the control module, the alarm device is electrically connected to the control module, and the alarm device is installed on the outer side of the support tube.

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