Yaw brake of wind generating set and wind generating set

Abstract

The utility model discloses a yaw brake of a wind generating set and the wind generating set, and relates to the technical field of wind power equipment, the yaw brake comprises a caliper and a brake mechanism, the caliper is provided with a brake groove, the brake groove is used for allowing a yaw gear ring of the wind generating set to extend into from a notch, and a containing channel is further formed in the caliper; the brake mechanism comprises a brake assembly and a force sensor; the brake assembly comprises a friction plate, a disc spring assembly and an adjusting piece which are sequentially arranged in the vertical direction. The friction plate is located at the top end of the containing channel and partially stretches into the brake groove to abut against the yaw gear ring. The force sensor is located in the containing channel and abuts against the portion between the friction plate and the disc spring assembly. According to the yaw brake, the force sensor is arranged between the friction plate and the disc spring assembly, whether the disc spring assembly provides enough elastic acting force or not can be reflected, and therefore whether the yaw brake breaks down or not is judged, maintenance can be conducted in time if the yaw brake breaks down, and losses are avoided.

Description

Technical Field

[0001] The utility model relates to the technical field of wind power equipment, and particularly relates to a yaw brake of a wind turbine generator set and a wind turbine generator set. Background Art

[0002] Wind power generation is a new type of energy that is green and pollution-free, and has been widely used in various countries around the world. After years of development, the domestic wind power market is basically mature, and the demand for wind turbine generator sets has increased rapidly.

[0003] The yaw brake of a wind turbine generator set realizes braking through the friction between the friction plate and the yaw gear ring. When the wind direction changes, the nacelle at the top of the tower starts to yaw. At this time, an elastic acting force is applied through the disc spring assembly, so as to provide a stable damping force for the rotation of the nacelle through the friction plate, prevent the wind turbine generator set from becoming unstable, and ensure the stable rotation of the nacelle. When the yawing to face the wind ends, the disc spring assembly needs to provide a constant and sufficient elastic acting force to ensure the stability of the nacelle when the wind turbine generator set is working normally, prevent the nacelle from rotating randomly under strong wind conditions, and avoid the situation that the power generation efficiency is affected due to inaccurate wind-facing direction.

[0004] However, the current problem is that various special situations may be encountered during the operation of the wind turbine generator set. If the yaw brake is damaged, the nacelle of the wind turbine generator set may be unstable in some special situations, and even the wind turbine generator set may be damaged, causing huge losses; and currently, it is impossible to accurately and timely check whether there is a fault in the yaw brake during the operation of the wind turbine generator set, and the fault in the yaw brake needs to be eliminated after regular inspection, so the reliability is poor. Content of the Utility Model

[0005] The main purpose of the utility model is to propose a yaw brake of a wind turbine generator set and a wind turbine generator set, aiming to solve the technical problem that it is impossible to accurately and timely check whether there is a fault in the yaw brake during the operation of the wind turbine generator set, and the reliability is poor.

[0006] To achieve the above purpose, a yaw brake of a wind turbine generator set proposed by the utility model includes:

[0007] A caliper, the caliper is formed with a braking groove arranged in the horizontal direction, the notch of the braking groove faces one side of the caliper, the braking groove is used for the yaw gear ring of the wind turbine generator set to extend into from the notch, and a vertical accommodation channel communicating with the bottom of the braking groove is further formed in the caliper;

[0008] A braking mechanism, the braking mechanism includes a braking component and a force sensor;

[0009] The braking assembly includes a friction plate, a disc spring assembly, and an adjusting member arranged in sequence vertically. The friction plate is located at the top of the accommodating channel and partially extends into the braking groove to abut against the yaw gear ring. The adjusting member is located at the bottom of the accommodating channel, and the adjusting member can move vertically. The disc spring assembly is located in the accommodating channel, and the bottom end of the disc spring assembly abuts against the adjusting member.

[0010] The force sensor is located in the accommodating channel and abuts between the friction plate and the disc spring assembly. The disc spring assembly and the adjusting member are both provided with wire harness channels for the wire harness of the force sensor to pass through.

[0011] In one embodiment, the outer peripheral shape of the force sensor matches the inner wall shape of the accommodating channel, and an activity gap is formed between the outer periphery of the force sensor and the inner wall of the accommodating channel.

[0012] In one embodiment, the disc spring assembly includes a cushion block, a disc spring group, and a guide post. Among them, the disc spring group is arranged around the guide post. The bottom end of the guide post abuts against the adjusting member. The cushion block is arranged at the top end of the guide post, and the wire harness channel penetrates through the cushion block and the guide post.

[0013] The force sensor abuts between the friction plate and the cushion block.

[0014] In one embodiment, a first slot is formed by the bottom surface of the cushion block being recessed upward. The upper end of the guide post is inserted into the first slot and abuts against the bottom of the first slot (221).

[0015] In one embodiment, the accommodating channel includes a clamping section and an adjusting section that communicate with each other. The cushion block and the force sensor are located in the clamping section. The friction plate is located at the top of the clamping section and partially extends into the braking groove. The adjusting member can move vertically in the adjusting section. A limiting step with a downward-facing step surface is formed at the connection between the adjusting section and the clamping section. The top surface of the adjusting member can abut against the step surface of the limiting step.

[0016] In one embodiment, the adjusting member includes an adjusting seat and an adjusting column connected to each other. The adjusting column can extend into the accommodating channel from the bottom end of the accommodating channel, and the outer periphery of the adjusting column is threadedly connected to the inner wall of the accommodating channel. A avoiding step with a downward-facing step surface is formed at the connection between the adjusting seat and the adjusting column. The wire harness channel penetrates through the adjusting seat and the adjusting column.

[0017] In one embodiment, a limiting groove with an upward-facing opening is provided at the top of the adjusting column. The bottom of the disc spring group extends into the limiting groove and abuts against the bottom of the limiting groove.

[0018] In one embodiment, a second slot is formed by downward depression of the bottom of the limiting slot, and the lower end of the guide post is inserted into the second slot and abuts against the bottom of the second slot (2321).

[0019] In one embodiment, a plurality of accommodating channels vertically arranged and communicating with the bottom of the braking slot are formed in the caliper. The plurality of accommodating channels are arranged at intervals along the extending direction of the braking slot, and the number of the braking mechanisms is the same as that of the accommodating channels and they are arranged in one-to-one correspondence.

[0020] The present utility model further provides a wind turbine generator, which includes a yaw ring gear and a plurality of yaw brakes as described above. The plurality of yaw brakes are sequentially arranged along the inner edge of the yaw ring gear, and the inner edge of the yaw ring gear extends into each of the braking slots.

[0021] In the yaw brake of the present utility model, a force sensor is arranged between the friction plate and the disc spring assembly. The elastic acting force of the disc spring assembly is transmitted to the friction plate through the force sensor, so as to provide sufficient damping force through the friction plate. During the yaw process of the wind turbine generator, the damping force between the yaw ring gear and the friction plate changes, and the force sensor can detect the pressure acting on the friction plate by the disc spring assembly. Therefore, the acting force detected by the force sensor 3 actually also reflects the change of the pre-tightening force acting on the disc spring assembly; by arranging the force sensor to detect the change of the acting force in real time, the elastic acting force provided by the disc spring assembly can be reflected, so as to accurately and timely check whether there is a fault in the yaw brake. If a fault occurs, it can be repaired in time to avoid losses, with good reliability, and there is no need for regular inspection and maintenance. Description of the Drawings

[0022] In order to more clearly illustrate the technical solutions in the embodiments of the present utility model or the prior art, the following will briefly introduce the drawings required for the description of the embodiments or the prior art. Obviously, the following drawings are only some embodiments of the present utility model. For those of ordinary skill in the art, without creative efforts, other drawings can be obtained based on the structures shown in these drawings.

[0023] Figure 1 It is a cross-sectional view of an embodiment of the yaw brake provided by the present utility model;

[0024] Figure 2 It is a front view of an embodiment of the yaw brake provided by the present utility model.

[0025] Explanation of the Reference Numerals in the Drawings:

[0026] 100, Yaw Brake; 1, Caliper; 11, Brake Groove; 12, Accommodating Channel; 121, Clamping Section; 122, Adjusting Section; 123, Limiting Step; 2, Brake Assembly; 21, Friction Plate; 22, Disc Spring Assembly; 221, Spacer Block; 2211, First Slot; 222, Guide Post; 223, Disc Spring Group; 23, Adjusting Component; 231, Adjusting Seat; 232, Adjusting Column; 2321, Second Slot; 233, Avoiding Step; 234, Limiting Groove; 24, Wiring Harness Channel; 3, Force Sensor.

[0027] The realization of the purpose, functional features and advantages of the present utility model will be further described with reference to the embodiments and the accompanying drawings. Detailed Embodiments

[0028] The technical solutions in the embodiments of the present utility model will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present utility model. Obviously, the described embodiments are only a part of the embodiments of the present utility model, rather than all embodiments. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present utility model without creative efforts shall fall within the protection scope of the present utility model.

[0029] It should be noted that if there are directional indications (such as up, down, left, right, front, back...) in the embodiments of the present utility model, the directional indications are only used to explain the relative position relationship and movement conditions between components in a specific posture. If the specific posture changes, the directional indications will also change accordingly.

[0030] In addition, if there are descriptions such as "first" and "second" in the embodiments of the present utility model, the descriptions of "first" and "second" are only for descriptive purposes and cannot be understood as indicating or implying their relative importance or implicitly indicating the quantity of the indicated technical features. Thus, the features defined with "first" and "second" may explicitly or implicitly include at least one such feature. In addition, if "and / or" or "and / or" appears throughout the text, its meaning includes three parallel solutions. Taking "A and / or B" as an example, it includes solution A, solution B, or a solution where A and B are satisfied simultaneously. In addition, the technical solutions between the embodiments can be combined with each other, but it must be based on the fact that those of ordinary skill in the art can implement them. When the combination of technical solutions is contradictory or cannot be implemented, it should be considered that such a combination of technical solutions does not exist and is not within the protection scope required by the present utility model.

[0031] Wind power generation is a new green and pollution-free energy source that has been widely used in countries around the world. After years of development, the domestic wind power market is basically mature, and the demand for wind turbines has increased rapidly.

[0032] The yaw brake of a wind turbine achieves braking through the friction between the friction plates and the yaw gear ring. When the wind direction changes, the nacelle at the top of the tower starts to yaw. At this time, the disc spring assembly applies a pre-tightening force, so as to provide a stable damping force for the rotation of the nacelle through the friction plates, prevent the wind turbine from becoming unstable, and ensure the stable rotation of the nacelle. When the yaw alignment with the wind ends, the disc spring assembly needs to provide a constant and sufficient elastic acting force to ensure the stability of the nacelle when the wind turbine is operating normally, prevent the nacelle from rotating randomly under strong wind conditions, and avoid the situation where the alignment direction is inaccurate and affects the power generation efficiency.

[0033] However, the current problem is that various special situations may be encountered during the operation of the wind turbine. If the yaw brake is damaged, in some special cases, it may cause the nacelle of the wind turbine to be unstable, and even cause damage to the wind turbine, resulting in huge losses; currently, during the operation of the wind turbine, it is impossible to accurately and timely check whether there is a fault in the yaw brake, and the fault in the yaw brake needs to be eliminated after regular inspection, and the reliability is poor.

[0034] The present utility model provides a yaw brake for a wind turbine.

[0035] Please refer to Figure 1 - Figure 2 , in an embodiment of the present utility model, the yaw brake 100 includes a caliper 1 and a braking mechanism 2; the caliper 1 is formed with a braking groove 11 arranged in the horizontal direction, the notch of the braking groove 11 faces one side of the caliper 1, and the braking groove 11 is used for the yaw gear ring of the wind turbine to extend into from the notch. An accommodation channel 12 arranged vertically and communicating with the bottom of the braking groove 11 is further formed in the caliper 1; the braking mechanism 2 includes a braking assembly 2 and a force sensor 3; the braking assembly 2 includes a friction plate 21, a disc spring assembly 22 and an adjusting member 23 arranged in sequence vertically. The friction plate 21 is located at the top of the accommodation channel 12 and partially extends into the braking groove 11 to abut against the yaw gear ring. The adjusting member 23 is located at the bottom of the accommodation channel 12, and the adjusting member 23 can move vertically; the disc spring assembly 22 is located in the accommodation channel 12, and the bottom end of the disc spring assembly 22 abuts against the adjusting member 23; the force sensor 3 is located in the accommodation channel 12 and abuts between the friction plate 21 and the disc spring assembly 22. The disc spring assembly 22 and the adjusting member 23 are both provided with a wire harness channel 24 for the wire harness of the force sensor 3 to pass through.

[0036] It should be noted that the horizontal direction herein is Figure 2 the left-right direction in Figure 2 and the vertical direction is the up-down direction in

[0037] The technical solution of the present utility model adopts a caliper 1 to cooperate with a yaw gear ring, and uses a braking groove 11 to clamp the yaw gear ring, thereby providing a stable damping force for the nacelle of the wind turbine generator, so that the nacelle maintains a certain stability whether it is yawing or not yawing; wherein, a braking mechanism 2 is arranged in a corresponding accommodating channel 12, and a part of a friction plate 21 in the braking mechanism 2 extends into the braking groove 11, so as to abut against the yaw gear ring to provide a damping force, and an adjusting member 23 is used to adjust the elastic acting force applied by a disc spring assembly 22 to the friction plate 21, so as to obtain different damping forces, so that the wind turbine generator maintains stability in various situations.

[0038] By arranging a force sensor 3 between the friction plate 21 and the disc spring assembly 22, the elastic acting force of the disc spring assembly 22 is transmitted to the friction plate 21 through the force sensor 3, so as to provide sufficient damping force through the friction plate 21. Therefore, the acting force detected by the force sensor 3 actually reflects the pressure exerted on the force sensor 3 by the disc spring assembly 22; by arranging the force sensor 3 for detection, it can be reflected whether the disc spring assembly 22 normally exerts pressure on the friction plate 21, so as to accurately and timely check whether there is a fault in the yaw brake 100. If a fault occurs, it can be repaired in time to avoid losses caused by the yaw brake 100 being unable to provide sufficient damping force, with good reliability, and at the same time, there is no need for regular inspection and maintenance.

[0039] It can be understood that while the pressure exerted on the force sensor 3 by the disc spring assembly 22 is detected in real time. First, the change in the elastic acting force of the disc spring assembly 22 under the change of the yaw state can be obtained, which is used to guide the selection of the pre-tightening force of the spring assembly 22; second, the sequential change in the elastic acting force of the disc spring assembly 22 under the change of the yaw state can also be obtained, which is used to guide the fatigue performance test of the disc spring assembly 22 and the selection of the disc spring group model; in addition, through the pressure detection by the force sensor 3, it can be judged whether the friction plate 21 is worn, whether the adjusting member 23 fails, and whether the disc spring assembly 22 provides sufficient and constant elastic acting force and other fault conditions.

[0040] Specifically, a wire harness channel 24 for the wire harness of the force sensor 3 to pass through is arranged in both the disc spring assembly 22 and the adjusting member 23, so as to facilitate the arrangement of the wire harness of the force sensor 3 and the transmission of the data collected by the force sensor 3.

[0041] Furthermore, the wire harness channel 24 is opened at the central position of the disc spring assembly 22 and the adjusting member 23, with a reasonable structural design, so that the force sensor 3 is more evenly stressed and the detection result is more accurate.

[0042] In one embodiment, the outer peripheral shape of the force sensor 3 matches the inner wall shape of the receiving channel 12, and a movable gap is formed between the outer periphery of the force sensor 3 and the inner wall of the receiving channel 12. It can be understood that the outer periphery of the force sensor 3 does not contact the inner wall of the receiving channel 12, avoiding the generation of frictional force between the force sensor 3 and the inner wall of the receiving channel 12, making the final detection structure more accurate.

[0043] Specifically, the receiving channel 12 is cylindrical, and the force sensor 3 is also a cylindrical force sensor 3.

[0044] In one embodiment, the disc spring assembly 22 includes a cushion block 221, a disc spring group 223, and a guide post 222. Among them, the disc spring group 223 is arranged around the guide post 222. The bottom end of the guide post 222 abuts against the adjusting member 23. The cushion block 221 is arranged at the top end of the guide post 222, and the wire harness channel 24 penetrates through the cushion block 221 and the guide post 222; the force sensor 3 abuts between the friction plate 21 and the cushion block 221.

[0045] It can be understood that the cushion block 221 plays a certain buffering role. Since the top surface of the guide post 222 is smaller than the bottom surface of the friction plate 21, if the top end of the guide post 222 directly abuts against the friction plate 21, it is easy to cause the friction plate 21 to be extruded and deformed. In addition, the gasket can also evenly disperse the elastic force of the disc spring group 223 and apply it to the friction plate 21; by arranging the force sensor 3 between the friction plate 21 and the cushion block 221, it is also to avoid the force sensor 3 being easily damaged when directly contacting the guide post 222; the guide post 222 is mainly used to stabilize the posture of the disc spring group 223 and avoid the disc spring group 223 from deforming and twisting.

[0046] Specifically, the guide post 222 is a cylindrical guide post 222. The gasket is fixedly connected to the bottom surface of the force sensor 3, and it can be specifically fixed to the force sensor 3 by means of adhesion. In order to ensure that the cushion block 221 does not displace under force. In addition, in one embodiment, the top surface of the force sensor 3 is fixedly connected to the friction plate 21, and it can also be fixed by means of adhesion to ensure rapid load conduction and enable the force sensor 3 to collect load information in a timely manner.

[0047] Specifically, the wire harness channel 24 penetrates through the central position of the guide post 222 from top to bottom.

[0048] In one embodiment, the guide post 222 and the cushion block 221 are integrally formed, and the structure is more stable.

[0049] In another embodiment, a first slot 2211 is formed by recessing the bottom surface of the spacer block 221 upward, and the upper end of the guide post 222 is inserted into the first slot 2211 and abuts against the bottom of the first slot 2211. It can be understood that by providing the first slot 2211 on the bottom surface of the spacer block 221, after the upper end of the guide post 222 is inserted into the first slot 2211, the relative position between the upper end of the guide post 222 and the spacer block 221 is kept stable, which is beneficial to the elastic force exerted by the disc spring group 223, and the structure is simple and easy to assemble.

[0050] Specifically, the first slot 2211 is provided at the central position of the bottom surface of the spacer block 221.

[0051] In one embodiment, the accommodation channel 12 includes a clamping section 121 and an adjustment section 122 that communicate with each other. The spacer block 221 and the sensor are located in the clamping section 121. The friction plate 21 is located at the top of the clamping section 121 and partially extends into the braking groove 11. The adjusting member 23 can move vertically in the adjustment section 122. A limiting step 123 with a downward-facing step surface is formed at the connection between the adjustment section 122 and the clamping section 121. The top surface of the adjusting member 23 can abut against the step surface of the limiting step 123.

[0052] It can be understood that by forming the limiting step 123 at the connection between the adjustment section 122 and the clamping section 121, the movement range of the adjusting member 23 is restricted, preventing the friction plate 21 from being pushed out from the top surface of the accommodation channel 12 due to excessive direct adjustment, or avoiding excessive deformation of the disc spring group 223 due to excessive adjustment, thereby damaging the performance of the disc spring group 223, or damaging other mechanisms including the force sensor 3 and the friction plate 21, thus reducing the service life of the yaw brake.

[0053] Among them, in a specific embodiment, the limiting step 123 can be a flange connected end to end formed at the connection between the adjustment section 122 and the clamping section 121, or a plurality of protrusions arranged at intervals. At this time, the inner diameter dimensions of the adjustment section 122 and the clamping section 121 are the same; in another specific embodiment, the inner diameter dimension of the adjustment section 122 can be larger than that of the clamping section 121 to form the limiting step 123 at the connection between the adjustment section 122 and the limiting section, thereby restricting the movement range of the adjusting member 23.

[0054] In one embodiment, the adjusting member 23 includes an adjusting seat 231 and an adjusting column 232 that are connected to each other. The adjusting column 232 can extend into the accommodation channel 12 from the bottom end of the accommodation channel 12, and the outer periphery of the adjusting column 232 is threadedly connected to the inner wall of the accommodation channel 12. A relief step 233 with a downward-facing step surface is formed at the connection between the adjusting seat 231 and the adjusting column 232; the wire harness channel 24 penetrates through the adjusting seat 231 and the adjusting column 232.

[0055] Understandably, the adjusting column 232 is threadedly connected to the inner wall of the accommodating channel 12. When the adjusting seat 231 rotates, it drives the adjusting column 232 to rotate, thereby realizing the movement of the entire adjusting member 23. The dimension of the adjusting seat 231 in the horizontal direction is smaller than the dimension of the adjusting column 232 in the horizontal direction, so that the adjusting seat 231 can also extend into the accommodating channel 12, without restricting the upward movement of the adjusting seat 231. In addition, it is also convenient to arrange a limiting member at the bottom of the caliper 1. The limiting member cooperates with the avoiding step 233 to limit the adjusting column 232 in the accommodating channel 12, while enabling the adjusting seat 231 to extend out of the accommodating channel 12, facilitating adjustment.

[0056] In one embodiment, a limiting groove 234 with an upward opening is provided at the top of the adjusting column 232. The bottom of the disc spring group 223 extends into the limiting groove 234 and abuts against the bottom of the limiting groove 234. Understandably, by providing the limiting groove 234 at the top of the adjusting column 232 and the bottom of the disc spring group 223 extending into the limiting groove 234, the stability of the disc spring group 223 is realized, and the disc spring group 223 is prevented from deforming.

[0057] In one embodiment, a second slot 2321 is formed by the bottom of the limiting groove 234 sinking downward. The lower end of the guide post 222 is inserted into the second slot 2321 and abuts against the bottom of the second slot 2321. Understandably, by providing the second slot 2321 at the bottom of the limiting groove 234, after the lower end of the guide post 222 is inserted into the second slot 2321, the relative position of the lower end of the guide post 222 and the adjusting member 23 remains stable, making the overall structure more stable.

[0058] In one embodiment, a plurality of accommodating channels 12 vertically arranged and communicating with the bottom of the braking groove 11 are formed in the caliper 1. The plurality of accommodating channels 12 are arranged at intervals along the extending direction of the braking groove 11. The number of the braking mechanisms 2 is the same as that of the accommodating channels 12 and they are arranged in one-to-one correspondence.

[0059] Understandably, by providing a plurality of accommodating channels 12 and braking mechanisms 2 on the caliper 1, the braking effect is better and the layout is more favorable.

[0060] The present utility model also proposes a wind turbine generator, which includes a yaw ring gear and the yaw brake as described above. The specific structure of this wind turbine generator refers to the above embodiments. Since this wind turbine generator adopts all the technical solutions of the above embodiments, it at least has all the beneficial effects brought by the technical solutions of the above embodiments, which will not be elaborated here one by one.

[0061] Among them, a plurality of yaw brakes are sequentially arranged along the inner edge of the yaw ring gear, and the inner edge of the yaw ring gear extends into each braking groove 11.

[0062] The above are only exemplary embodiments of the present utility model, and do not limit the patent scope of the present utility model accordingly. Any equivalent structural transformation made under the technical concept of the present utility model by using the content of the specification and drawings of the present utility model, or any direct / indirect application in other related technical fields is included in the patent protection scope of the present utility model.

Claims

1. A yaw brake for a wind turbine generator set, characterized in that: The yaw brake (100) comprises: A caliper (1), wherein the caliper (1) is formed with a brake groove (11) arranged in a horizontal direction, the notch of the brake groove (11) faces one side of the caliper (1), the brake groove (11) is used for allowing the yaw gear ring of the wind turbine generator set to extend through the notch, and the caliper (1) is also formed with a receiving channel (12) arranged vertically and connected to the bottom of the brake groove (11); A braking mechanism, comprising a braking assembly (2) and a force sensor (3); The brake assembly (2) comprises a friction plate (21), a disc spring assembly (22) and an adjusting member (23) which are arranged in sequence along the vertical direction; the friction plate (21) is located at the top end of the accommodating channel (12) and partially extends into the brake groove (11) to abut against the yaw gear ring; the adjusting member (23) is located at the bottom end of the accommodating channel (12), and the adjusting member (23) can move vertically; the disc spring assembly (22) is located in the accommodating channel (12), and the bottom end of the disc spring assembly (22) abuts against the adjusting member (23); The force sensor (3) is located in the accommodating channel (12) and abuts between the friction plate (21) and the disc spring assembly (22). The disc spring assembly (22) and the adjusting member (23) are both provided with a wiring harness channel (24) for the wiring harness of the force sensor (3) to pass through.

2. The yaw brake of a wind turbine generator set according to claim 1, characterized in that: The outer periphery shape of the force sensor (3) matches the inner wall shape of the accommodating channel (12), and an active gap is formed between the outer periphery of the force sensor (3) and the inner wall of the accommodating channel (12).

3. The yaw brake of a wind turbine generator set according to claim 1, characterized in that: The disc spring assembly (22) comprises a cushion block (221), a disc spring group (223) and a guide column (222), wherein the disc spring group (223) is arranged around the guide column (222), the bottom end of the guide column (222) abuts against the adjusting member (23), the cushion block (221) is arranged at the top end of the guide column (222), and the wiring harness channel (24) passes through the cushion block (221) and the guide column (222); the force sensor (3) abuts between the friction plate (21) and the cushion block (221).

4. The yaw brake of a wind turbine generator set according to claim 3, characterized in that: The bottom surface of the cushion block (221) is recessed upward to form a first slot (2211), and the upper end of the guide column (222) is inserted into the first slot (2211) and abuts against the bottom of the first slot (2211).

5. The yaw brake of a wind turbine generator set according to claim 3, characterized in that: The accommodating channel (12) comprises a clamping section (121) and an adjusting section (122) which are connected to each other; the pad (221) and the force sensor (3) are located in the clamping section (121); the friction plate (21) is located at the top end of the clamping section (121) and partially extends into the brake groove (11); the adjusting member (23) can move vertically in the adjusting section (122); a limiting step (123) with a step surface facing downward is formed at the connection point between the adjusting section (122) and the clamping section (121); and the top surface of the adjusting member (23) can abut against the step surface of the limiting step (123).

6. The yaw brake of a wind turbine generator set according to claim 3, characterized in that: The adjusting member (23) comprises an adjusting seat (231) and an adjusting column (232) which are connected to each other; the adjusting column (232) can extend from the bottom end of the accommodating channel (12) into the accommodating channel (12); the outer periphery of the adjusting column (232) is threadedly connected to the inner wall of the accommodating channel (12); a step-side avoidance step (233) with the step surface facing downward is formed at the connection between the adjusting seat (231) and the adjusting column (232); and the wiring harness channel (24) passes through the adjusting seat (231) and the adjusting column (232).

7. The yaw brake of a wind turbine generator set according to claim 6, characterized in that: The top of the adjusting column (232) is provided with a limiting groove (234) with an opening facing upward, and the bottom of the disc spring group (223) extends into the limiting groove (234) and abuts against the bottom of the limiting groove (234).

8. The yaw brake of a wind turbine generator set according to claim 7, characterized in that: The bottom of the limiting groove (234) is recessed downward to form a second slot (2321), and the lower end of the guide column (222) is inserted into the second slot (2321) and abuts against the bottom of the second slot (2321).

9. The yaw brake of a wind turbine generator set according to any one of claims 1 to 8, characterized in that: The caliper (1) is formed with a plurality of accommodating channels (12) which are in communication with the bottom of the brake groove (11); the plurality of accommodating channels (12) are arranged at intervals along the extension direction of the brake groove (11); and the number of the brake mechanisms and the accommodating channels (12) are consistent and arranged in a one-to-one correspondence.

10. A wind turbine generator set, characterized in that: It comprises a yaw gear ring and a plurality of yaw brakes (100) according to any one of claims 1 to 9, wherein the plurality of yaw brakes (100) are arranged in sequence along the inner edge of the yaw gear ring, and the inner edge of the yaw gear ring extends into each of the brake grooves (11).

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