Coupling of wind generating set and method

Abstract

The invention relates to the technical field of couplings, in particular to a coupling of a wind generating set and a method. The coupling comprises a middle pipe, two connecting pipes, a brake disc, a torque limiting unit, an elastic unit and a brake assembly; the brake assembly comprises a wear-resistant annular block, a plurality of brake pads, a metal annular block and an electromagnetic ring, and the brake pads move at the same time to make contact with the wear-resistant annular block to abut against and press the wear-resistant annular block; meanwhile, an electromagnetic ring is powered on to generate magnetic attraction, the electromagnetic ring and a metal annular block attract each other, braking torque is generated, efficient deceleration braking is conducted on the coupler, therefore, the method that the braking torque is generated through magnetic force to be matched with friction braking is adopted, pressure needed by friction is shared, and under the condition that the deceleration effect is not reduced, the contact pressure of a brake pad is reduced; and meanwhile, the two modes are used in cooperation, and the braking effect can be greatly improved.

Description

Technical Field

[0001] The present invention relates to the technical field of couplings, and in particular to a coupling and a method for a wind turbine generator set. Background Art

[0002] In the use of wind turbines, couplings are mainly used to connect wind turbines and generators, transmitting the power generated by the rotation of the wind turbine to the generator, thereby generating electricity. However, if the coupling slips, the torque is too large, or components are damaged, the coupling needs to be slowed down or stopped. Currently, brake discs are installed on the couplings, and the external brake pads contact the brake discs to achieve the effect of deceleration and stopping.

[0003] However, in the aforementioned prior art, during the rapid rotation of the turbine, the traditional braking method that relies on the contact between the brake pad and the brake disc usually increases the contact pressure to increase the friction and increase the braking effect; but excessive friction can easily cause the brake disc to wear quickly and affect its service life, while too little contact pressure affects the braking effect. Therefore, the traditional brake pad method cannot ensure durability while efficiently braking the coupling. Summary of the invention

[0004] The purpose of the present invention is to provide a coupling and method for a wind turbine generator set, so as to solve the problem that in the prior art, during the rapid rotation of the turbine, the traditional braking method relies on the contact between the brake pad and the brake disc, and usually increases the contact pressure to increase the friction and increase the braking effect; but excessive friction can easily cause the brake disc to wear quickly, affecting the service life, while too little contact pressure can affect the braking effect. Therefore, the traditional brake pad method cannot ensure durability while effectively braking the coupling.

[0005] To achieve the above-mentioned object, the present invention provides a coupling of a wind turbine generator set, comprising an intermediate tube, two connecting tubes, a brake disc, two torque limiting units, two elastic units and a brake assembly, wherein the two connecting tubes are symmetrically arranged at both ends of the intermediate tube, the connecting tube is fixedly connected to one side of the brake disc, the other side of the brake disc is bolted to the corresponding elastic unit, and the elastic unit is connected to the intermediate tube through the torque limiting unit;

[0006] The brake assembly includes a wear-resistant annular block, a plurality of brake pads, a metal annular block and an electromagnetic ring. The wear-resistant annular block is fixedly connected to the brake disc and is located on one side of the brake disc. The plurality of brake pads are sequentially arranged on one side of the wear-resistant annular block, the metal annular block is arranged on one side of the brake disc, and the electromagnetic ring is arranged on one side of the metal annular block.

[0007] Among them, the brake assembly also includes a mounting flange, a plurality of pushing components, a plurality of first telescopic circulation pipes and a top supporting unit. The mounting flange is arranged on one side of the brake disc and is sleeved on the outside of the connecting pipe. The plurality of pushing components are arranged on the mounting flange in sequence. The output end of the pushing component passes through the mounting flange and is fixedly connected to the brake pad. The plurality of the first telescopic circulation pipes pass through the mounting flange and the corresponding brake pad in sequence. The top supporting unit is arranged on the mounting flange and the brake disc, and the electromagnetic ring is arranged on one side of the mounting flange.

[0008] Among them, the top supporting unit includes a deceleration cover, a protrusion and a plurality of protrusion supporting mechanisms. The deceleration cover is fixedly connected to the brake disc and is located on one side of the brake disc. The mounting flange has a groove, and a plurality of protrusion supporting mechanisms are sequentially arranged inside the corresponding grooves. The protrusion is arranged on the deceleration cover.

[0009] Among them, the protrusion holding mechanism includes two first springs, two first telescopic rods, a metal block, an electromagnet, a support block, a concave block and a second telescopic circulation pipe, the two ends of the two first springs are respectively movably connected to the inner bottom wall of the groove and the support block, the two ends of the two first telescopic rods are respectively fixedly connected to the inner bottom wall of the groove and the support block, the first spring is sleeved on the outside of the first telescopic rod, the metal block is arranged below the support block, the electromagnet is arranged on the inner bottom wall of the groove, the concave block is arranged above the support block, the concave block and the protrusion are adapted to each other, and the second telescopic circulation pipe passes through the mounting flange and the support block in sequence.

[0010] In which, the torque limiting unit includes a first shell, a second shell, an anti-deflection ring body, a friction disk, a holding disk, a plurality of second telescopic rods, a plurality of second springs and a torque detector, the anti-deflection ring body is arranged on one side of the first shell, the second shell has an annular groove, the anti-deflection ring body and the annular groove are adapted to each other, the first shell is bolted to the brake disk, the second shell is bolted to the intermediate tube, the friction disk is arranged on the inner wall of the second shell, the two ends of the plurality of second telescopic rods are respectively fixedly connected to the inner wall of the first shell and the holding disk, the two ends of the second spring are respectively movably connected to the inner wall of the first shell and the holding disk, the second spring is sleeved on the outside of the second telescopic rod, and the torque detector is arranged on the connecting pipe.

[0011] Wherein, the elastic unit includes multiple mounting rings, multiple elastic sheets and multiple reinforcing ribs, the multiple mounting rings are connected to the brake disc bolts, the multiple elastic sheets are sequentially arranged between the corresponding mounting rings, and the multiple reinforcing ribs are sequentially arranged on both sides of the corresponding elastic sheets.

[0012] The present invention also provides a method for using a coupling of a wind turbine generator set, using the coupling of the wind turbine generator set described above, comprising the following steps:

[0013] Connecting the two connecting pipes to the generator and the turbine;

[0014] The torque limiting unit detects and limits the torque. When the torque exceeds the set value, slippage occurs to avoid excessive torque.

[0015] At the same time, the elastic unit can perform phase displacement compensation and absorb axial vibration;

[0016] When deceleration is required, the plurality of brake pads move simultaneously to contact the wear-resistant annular block to resist and press;

[0017] At the same time, the electromagnetic ring is energized to generate magnetic attraction, which attracts the metal ring block to generate a braking torque, thereby performing efficient deceleration and braking on the coupling.

[0018] A coupling and method for a wind power generator set of the present invention connects the two connecting pipes with the generator and the turbine; the torque limiting unit detects and limits the torque, and when the torque exceeds the set value, slippage occurs to avoid excessive torque; at the same time, the elastic unit can perform phase displacement compensation to absorb axial vibration; when deceleration is required, multiple brake pads move simultaneously to contact the wear-resistant annular block for abutment and pressing; at the same time, the electromagnetic ring is energized to generate magnetic attraction, and attracts the metal annular block to generate a braking torque, thereby performing efficient deceleration and braking on the coupling. Through the above-mentioned structural setting, the braking torque generated by magnetic force is combined with the friction braking method to share the pressure required for friction. While ensuring that the deceleration effect is not reduced, the contact pressure of the brake pad is reduced to increase the service life. At the same time, the two methods are used in combination to greatly increase the braking effect. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art are briefly introduced below.

[0020] Figure 1 It is a schematic diagram of the overall structure of the present invention.

[0021] Figure 2 It is a cross-sectional view of the whole of the present invention.

[0022] Figure 3 The present invention Figure 2 AA line section view.

[0023] Figure 4 The present invention Figure 2 Enlarged view of the local structure at point B.

[0024] Figure 5 The present invention Figure 2 Enlarged view of the local structure at location C.

[0025] Figure 6 The present invention Figure 3 Enlarged view of the local structure at D.

[0026] Figure 7 It is a diagram of the internal structure of the groove of the present invention.

[0027] Figure 8 The present invention Figure 7 Enlarged view of the local structure at E.

[0028] Fig. 9 It is a structural schematic diagram of the torque limiting unit of the present invention.

[0029] Fig.10 The present invention is a flowchart of the steps of the method for using the coupling of the wind turbine generator set.

[0030] 1-middle pipe, 2-connecting pipe, 3-brake disc, 4-wear-resistant annular block, 5-brake pad, 6-metal annular block, 7-electromagnetic ring, 8-mounting flange, 9-pushing component, 10-first telescopic circulation pipe, 11-deceleration cover, 12-bump, 13-groove, 14-first spring, 15-first telescopic rod, 16-metal block, 17-electromagnet, 18-support block, 19-concave block, 20-second telescopic circulation pipe, 21-first shell, 22-second shell, 23-anti-deflection ring body, 24-friction disc, 25-holding disc, 26-second telescopic rod, 27-second spring, 28-torque detector, 29-annular groove, 30-mounting ring, 31-elastic sheet, 32-reinforcement rib. DETAILED DESCRIPTION

[0031] Embodiments of the present invention are described in detail below. Examples of the embodiments are shown in the accompanying drawings. The embodiments described below with reference to the accompanying drawings are exemplary and are intended to be used to explain the present invention, but should not be construed as limiting the present invention.

[0032] See also Figures 1 to 9The present invention provides a coupling of a wind turbine generator set, comprising an intermediate tube 1, two connecting tubes 2, a brake disc 3, two torque limiting units, two elastic units and a brake assembly, wherein the brake assembly comprises a wear-resistant annular block 4, a plurality of brake pads 5, a metal annular block 6 and an electromagnetic ring 7, the brake assembly further comprises a mounting flange 8, a plurality of pushing components 9, a plurality of first telescopic circulation pipes 10 and a top abutting unit, the top abutting unit comprises a deceleration cover 11, a protrusion 12 and a plurality of protrusion 12 abutting mechanisms, the protrusion 12 abutting mechanisms comprise two first springs 14, two first telescopic rods 15, a metal block 16, an electromagnet 17, a support block 18, a concave block 19 and a second telescopic circulation pipe 20, the torque limiting unit comprises a first shell 21, a second shell 22, an anti-deflection ring body 23, a friction disc 24, a holding disc 25, a plurality of second telescopic rods 26, a plurality of second springs 27 and a torque detector 28, and the elastic unit comprises a plurality of mounting rings 30, a plurality of elastic sheets 31 and a plurality of reinforcing ribs 32.

[0033] Among them, the two connecting pipes 2 are symmetrically arranged at the two ends of the intermediate pipe 1, the connecting pipe 2 is fixedly connected to one side of the brake disc 3, the other side of the brake disc 3 is bolted to the corresponding elastic unit, the elastic unit is connected to the intermediate pipe 1 through the torque limiting unit, the wear-resistant annular block 4 is fixedly connected to the brake disc 3 and is located on one side of the brake disc 3, a plurality of brake pads 5 are sequentially arranged on one side of the wear-resistant annular block 4, the metal annular block 6 is arranged on one side of the brake disc 3, and the electromagnetic ring 7 is arranged on one side of the metal annular block 6. The two connecting pipes 2 are connected to the generator and the turbine; the torque limiting unit detects and limits the torque, and when the torque exceeds the set value, slippage occurs to avoid excessive torque; at the same time, the elastic unit can perform phase displacement compensation and absorb axial vibration; when deceleration is required, a plurality of brake pads 5 move simultaneously to contact the wear-resistant annular block 4 for abutment and pressing; at the same time, the electromagnetic ring 7 is energized to generate magnetic attraction, and attracts the metal annular block 6 to generate braking torque, and effectively decelerates and brakes the coupling.

[0034] Secondly, the mounting flange 8 is arranged on one side of the brake disc 3 and is sleeved on the outside of the connecting pipe 2. The plurality of pushing components 9 are arranged on the mounting flange 8 in sequence. The output end of the pushing component 9 passes through the mounting flange 8 and is fixedly connected to the brake pad 5. The plurality of the first telescopic circulation pipes 10 pass through the mounting flange 8 and the corresponding brake pad 5 in sequence. The top supporting unit is arranged on the mounting flange 8 and the brake disc 3. The electromagnetic ring 7 is arranged on one side of the mounting flange 8. The pushing component 9 is a hydraulic cylinder; when the connecting pipe 2 is connected to the turbine and the generator, the mounting flange 8 is connected to the supporting part inside the external wind turbine housing, thereby supporting the brake assembly, and the pushing component 9 is started to drive the brake pad 5 to move, contact and abut against the wear-resistant annular block 4, and perform friction deceleration. At the same time, the first telescopic circulation pipe 10 follows the telescopic movement, and the first telescopic circulation pipe 10 is connected to the external cooling water, thereby cooling the brake pad 5 to avoid excessive temperature caused by friction that affects the braking effect or damage. The top abutment unit can perform additional abutment and deceleration on the top area of ​​the brake disc 3 to further ensure the deceleration effect.

[0035] At the same time, the deceleration cover 11 is fixedly connected to the brake disc 3 and is located on one side of the brake disc 3. The mounting flange 8 has a groove 13. A plurality of the protrusions 12 abutting mechanisms are sequentially arranged inside the corresponding grooves 13. The protrusions 12 are arranged on the deceleration cover 11. The deceleration cover 11 supports the protrusions 12. The protrusions 12 abutting mechanisms are activated and cooperate with the protrusions 12 and the deceleration cover 11 to decelerate the brake disc 3. Thus, the intermediate pipe 1 is decelerated through the connection between the elastic unit and the torque limiting unit.

[0036] In addition, the two ends of the two first springs 14 are movably connected to the inner bottom wall of the groove 13 and the support block 18, respectively, and the two ends of the two first telescopic rods 15 are fixedly connected to the inner bottom wall of the groove 13 and the support block 18, respectively. The first spring 14 is sleeved on the outside of the first telescopic rod 15, the metal block 16 is arranged below the support block 18, the electromagnet 17 is arranged on the inner bottom wall of the groove 13, the concave block 19 is arranged above the support block 18, the concave block 19 and the protrusion 12 are adapted to each other, and the second telescopic circulation pipe 20 passes through the mounting flange 8 and the support block 18 in sequence. The electromagnet 17 is energized to generate magnetic force, which pushes the metal block 16 upward, so that the support block 18 moves, and the concave block 19 fits with the convex block 12 to perform friction deceleration. At the same time, the first telescopic rod 15 follows the telescopic movement to ensure stability. The second telescopic circulation pipe 20 is connected to the outside with cooling water to cool the support block 18. The support block 18 absorbs the heat of the concave block 19 to avoid excessive temperature caused by friction, which affects the deceleration effect or damages.

[0037] Then, the anti-deflection ring body 23 is arranged on one side of the first shell 21, and the second shell 22 has an annular groove 29, the anti-deflection ring body 23 and the annular groove 29 are adapted to each other, the first shell 21 is bolted to the brake disc 3, the second shell 22 is bolted to the intermediate tube 1, the friction disc 24 is arranged on the inner wall of the second shell 22, the two ends of the plurality of second telescopic rods 26 are respectively fixedly connected to the inner wall of the first shell 21 and the abutment disc 25, the two ends of the second spring 27 are respectively movably connected to the inner wall of the first shell 21 and the abutment disc 25, the second spring 27 is sleeved on the outside of the second telescopic rod 26, and the torque detector 28 is arranged on the connecting pipe 2. The first shell 21 and the second shell 22 support the entire torque limiting unit. The connecting pipe 2 rotates, driving the brake disc 3 to rotate, so that the first shell 21 rotates, driving the friction disc 24 to rotate, and the friction disc 24 is in contact with the abutment disc 25, thereby driving the abutment disc 25 and the second shell 22 to rotate, and finally the intermediate tube 1 rotates to transmit power to the generator; the anti-deflection ring body 23 rotates in the annular groove 29 to prevent the first shell 21 and the second shell 22 from offsetting. When the torque exceeds the set value, the second spring 27 cannot provide sufficient abutment force, and then the friction disc 24 and the abutment disc 25 begin to slip, thereby playing a torque protection role; the torque detector 28 can also detect the torque size. When the torque exceeds the preset value, the pushing component 9 is started to abut and decelerate, and the electromagnetic ring 7 is started to perform magnetic braking, thereby minimizing the slipping friction between the friction disc 24 and the abutment disc 25, thereby increasing the service life of the torque limiting unit and limiting the torque at the same time.

[0038] Again, a plurality of the mounting rings 30 are bolted to the brake disc 3, a plurality of the elastic sheets 31 are sequentially arranged between the corresponding mounting rings 30, and a plurality of the reinforcing ribs 32 are sequentially arranged on both sides of the corresponding elastic sheets 31. The mounting rings 30 support the elastic sheets 31; the reinforcing ribs 32 enhance the strength of the elastic sheets 31; the elastic sheets 31 can compensate for axial, radial and angular deviations through elastic deformation and relative rotation, with a maximum angular deviation of 2 degrees and an instantaneous deviation of 3 degrees. At the same time, the reaction force is small and the axial vibration can be absorbed.

[0039] When using a coupling of a wind turbine generator set according to the present embodiment, the two connecting pipes 2 are connected to the generator and the turbine; the connecting pipe 2 rotates, driving the brake disc 3 to rotate, so that the first shell 21 rotates, driving the friction disc 24 to rotate, the friction disc 24 and the abutment disc 25 abut and fit, thereby driving the abutment disc 25 and the second shell 22 to rotate, and finally causing the intermediate pipe 1 to rotate to transmit power to the generator; the anti-deflection ring body 23 rotates in the annular groove 29 to prevent the first shell 21 and the second shell 22 from offsetting, and when the torque exceeds the set value, the second spring 27 cannot provide sufficient abutment force, and then the friction disc 24 and the abutment disc 25 begin to slip, thereby playing a torque protection role; the torque detector 28 can also detect the torque size, and when the torque exceeds the preset value, the pushing component is started 9 is used for abutment and deceleration, and the electromagnetic ring 7 is started for magnetic braking, thereby minimizing the slipping friction between the friction disk 24 and the abutment disk 25, thereby increasing the service life of the torque limiting unit and limiting the torque at the same time; at the same time, the elastic sheet 31 can perform phase displacement compensation and absorb axial vibration; when deceleration is required, multiple brake pads 5 are moved simultaneously to contact the wear-resistant annular block 4 for abutment and pressing; at the same time, the electromagnetic ring 7 is energized to generate magnetic attraction, and attracts the metal annular block 6 to generate a braking torque, and the coupling is efficiently decelerated and braked. Through the above-mentioned structural setting, the braking torque is generated by magnetic force in combination with friction braking, which shares the pressure required for friction. While ensuring that the deceleration effect is not reduced, the contact pressure of the brake pad 5 is reduced, thereby increasing the service life. At the same time, the two methods are used in combination to greatly increase the braking effect.

[0040] See also Fig.10 The present invention also provides a method for using a coupling of a wind turbine generator set, comprising the following steps:

[0041] S1: Connect the two connecting pipes 2 to the generator and the turbine;

[0042] S2: The torque limiting unit detects and limits the torque. When the torque exceeds the set value, slippage occurs to avoid excessive torque.

[0043] S3: At the same time, the elastic unit can perform phase displacement compensation and absorb axial vibration;

[0044] S4: when deceleration is required, the plurality of brake pads 5 move simultaneously to contact the wear-resistant annular block 4 to resist and press;

[0045] S5: At the same time, the electromagnetic ring 7 is energized to generate magnetic attraction, and attracts the metal ring block 6 to generate a braking torque, thereby performing efficient deceleration and braking on the coupling.

[0046] Among them, the two connecting pipes 2 are connected to the generator and the turbine; the torque limiting unit detects and limits the torque. When the torque exceeds the set value, slippage will occur to avoid excessive torque; at the same time, the elastic unit can perform phase displacement compensation and absorb axial vibration; when deceleration is required, multiple brake pads 5 move simultaneously to contact the wear-resistant annular block 4 for abutment and pressing; at the same time, the electromagnetic ring 7 is energized to generate magnetic attraction, and attracts the metal annular block 6 to generate a braking torque, thereby efficiently decelerating and braking the coupling.

[0047] What is disclosed above is only one or more preferred embodiments of the present application, and cannot be used to limit the scope of rights of the present application. Ordinary technicians in this field can understand that all or part of the processes of implementing the above embodiments and equivalent changes made according to the claims of the present application are still within the scope covered by the present application.

Claims

1. A coupling of a wind turbine generator set, comprising an intermediate tube, two connecting tubes, a brake disc, a torque limiting unit and an elastic unit, wherein the two connecting tubes are symmetrically arranged at both ends of the intermediate tube, the connecting tube is fixedly connected to one side of the brake disc, the other side of the brake disc is bolted to the corresponding elastic unit, and the elastic unit is connected to the intermediate tube through the torque limiting unit, characterized in that: Also included are brake components; The brake assembly includes a wear-resistant annular block, a plurality of brake pads, a metal annular block and an electromagnetic ring. The wear-resistant annular block is fixedly connected to the brake disc and is located on one side of the brake disc. The plurality of brake pads are sequentially arranged on one side of the wear-resistant annular block, the metal annular block is arranged on one side of the brake disc, and the electromagnetic ring is arranged on one side of the metal annular block.

2. The coupling of a wind turbine generator set according to claim 1, characterized in that: The brake assembly also includes a mounting flange, a plurality of pushing components, a plurality of first telescopic circulation pipes and a top supporting unit. The mounting flange is arranged on one side of the brake disc and is sleeved on the outside of the connecting pipe. The plurality of pushing components are sequentially arranged on the mounting flange. The output end of the pushing component passes through the mounting flange and is fixedly connected to the brake pad. The plurality of first telescopic circulation pipes pass through the mounting flange and the corresponding brake pad in sequence. The top supporting unit is arranged on the mounting flange and the brake disc, and the electromagnetic ring is arranged on one side of the mounting flange.

3. The coupling of a wind turbine generator set according to claim 2, characterized in that: The top supporting unit includes a deceleration cover, a protrusion and a plurality of protrusion supporting mechanisms. The deceleration cover is fixedly connected to the brake disc and is located on one side of the brake disc. The mounting flange has a groove. The plurality of protrusion supporting mechanisms are sequentially arranged inside the corresponding grooves. The protrusion is arranged on the deceleration cover.

4. The coupling of the wind turbine generator set according to claim 3, characterized in that: The protrusion holding mechanism includes two first springs, two first telescopic rods, a metal block, an electromagnet, a support block, a concave block and a second telescopic circulation pipe, the two ends of the two first springs are respectively movably connected to the inner bottom wall of the groove and the support block, the two ends of the two first telescopic rods are respectively fixedly connected to the inner bottom wall of the groove and the support block, the first spring is sleeved on the outside of the first telescopic rod, the metal block is arranged below the support block, the electromagnet is arranged on the inner bottom wall of the groove, the concave block is arranged above the support block, the concave block and the protrusion are adapted to each other, and the second telescopic circulation pipe passes through the mounting flange and the support block in sequence.

5. The coupling of the wind turbine generator set according to claim 4, characterized in that: The torque limiting unit includes a first shell, a second shell, an anti-deflection ring body, a friction disk, a holding disk, a plurality of second telescopic rods, a plurality of second springs and a torque detector. The anti-deflection ring body is arranged on one side of the first shell. The second shell has an annular groove. The anti-deflection ring body and the annular groove are adapted to each other. The first shell is bolted to the brake disk, and the second shell is bolted to the intermediate tube. The friction disk is arranged on the inner wall of the second shell. The two ends of the plurality of second telescopic rods are respectively fixedly connected to the inner wall of the first shell and the holding disk. The two ends of the second spring are respectively movably connected to the inner wall of the first shell and the holding disk. The second spring is sleeved on the outside of the second telescopic rod. The torque detector is arranged on the connecting pipe.

6. The coupling of a wind turbine generator set according to claim 5, characterized in that: The elastic unit includes a plurality of mounting rings, a plurality of elastic sheets and a plurality of reinforcing ribs. The plurality of mounting rings are connected to the brake disc bolts, the plurality of elastic sheets are sequentially arranged between the corresponding mounting rings, and the plurality of reinforcing ribs are sequentially arranged on both sides of the corresponding elastic sheets.

7. A method for using a coupling of a wind turbine generator set, using the coupling of a wind turbine generator set as claimed in claim 6, characterized in that: The steps include: Connecting the two connecting pipes to the generator and the turbine; The torque limiting unit detects and limits the torque. When the torque exceeds the set value, slippage occurs to avoid excessive torque. At the same time, the elastic unit can perform phase displacement compensation and absorb axial vibration; When deceleration is required, the plurality of brake pads move simultaneously to contact the wear-resistant annular block to resist and press; At the same time, the electromagnetic ring is energized to generate magnetic attraction, which attracts the metal ring block to generate a braking torque, thereby performing efficient deceleration and braking on the coupling.

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