Wind turbine generator yaw brake pad wear monitoring device

Abstract

The utility model belongs to the technical field of brake pad abrasion monitoring equipment, and particularly relates to a wind turbine generator yaw brake pad abrasion monitoring device which comprises a brake, a brake disc is arranged in the brake, bases are arranged on the inner wall of the top and the inner wall of the bottom of the brake, and the top and the bottom of the brake are each provided with two brake pistons. The brake pistons are fixedly connected with the corresponding bases, grooves are formed in the sides, away from each other, of the two bases, and detection mechanisms are arranged between the grooves and the brakes. The device is reasonable in design, the detection mechanism is arranged, when it is detected that the distance between the base blocks exceeds a set value through the distance measuring probe, early warning can be sent to the controller, the purpose of monitoring abrasion of the brake pad can be achieved, the sweeping mechanism and the scraping mechanism are arranged, impurities can be prevented from being attached to the brake disc, and the service life of the brake pad is prolonged. And the monitoring accuracy of the brake pad is further influenced.

Description

Technical Field

[0001] The present application relates to the technical field of brake pad wear monitoring equipment, and in particular to a wind turbine yaw brake pad wear monitoring device. Background Art

[0002] The yaw system of a wind turbine is composed of a slewing bearing, a yaw brake (brake) disc, a brake caliper and a gear transmission mechanism driven by several motors. When not yawed, the brake caliper and the brake disc are in a "locked" state. When yawed, the brake caliper is in a semi-released state. When the cable is automatically untied, the brake caliper is in a fully released state. The yaw time set by the system is usually (10-15) minutes. The brake caliper and the brake disc rely on the friction of the friction plate installed on the brake caliper to produce a braking effect.

[0003] At present, a device capable of monitoring the wear degree of the yaw friction plate of a wind turbine set is disclosed in a Chinese patent with the announcement number CN216241105U, which includes a brake, a friction plate body, a pressure sensor and a roller. A base is installed on the outer wall of the brake, and a friction plate body is arranged on the outer wall of the base, and a pressure sensor is embedded and installed inside the base, and the end of the pressure sensor is connected to a positioning block through a support spring, and a wing block is fixedly installed on the outer wall of the end of the positioning block close to the support spring, and a connecting column is embedded and arranged inside the end of the positioning block away from the support spring, and the connecting column is fixedly installed on the end face of the roller, and a locking mechanism is arranged on the side of the roller. The device capable of monitoring the wear degree of the yaw friction plate of a wind turbine set enhances the monitoring effect, making it convenient for the device to monitor the wear degree of the friction plate in real time, and at the same time, the device is convenient for maintaining the roller, and avoiding the wear of the roller caused by long-term use to affect the monitoring effect of the device.

[0004] In actual use, it is found that in the existing device, due to the long-term friction between the brake pads and the brake discs, debris and impurities are easily adhered to the brake discs. If the brake discs are not cleaned, the accuracy of brake pad monitoring will be affected. There is a problem that the existing device cannot clean the brake discs, which affects the accuracy of brake pad monitoring. Therefore, we propose a wind turbine yaw brake pad wear monitoring device to solve the above problem. Utility Model Content

[0005] The purpose of this application is to solve the problem in the prior art that the existing device cannot clean the brake disc, which affects the accuracy of brake pad monitoring, and to propose a wind turbine yaw brake pad wear monitoring device.

[0006] In order to achieve the above purpose, this application adopts the following technical solutions:

[0007] A wind turbine yaw brake pad wear monitoring device comprises a brake, wherein a brake disc is arranged in the brake, a base is arranged on the top inner wall and the bottom inner wall of the brake, two brake pistons are arranged on the top and the bottom of the brake, the brake pistons are fixedly connected to the corresponding bases, grooves are arranged on the sides of the two bases away from each other, and a detection mechanism is arranged between the groove and the brake; a cleaning mechanism and a scraping mechanism are arranged on the adjacent sides of the two bases, a buffer cavity is arranged in the base, the buffer cavity is located outside the groove, a pressure sensor is arranged on the top inner wall of the buffer cavity, a rod hole is arranged on the inner wall of the buffer cavity on the side close to the brake disc, a tensioning mechanism is arranged between the rod hole and the buffer cavity, a brake pad is arranged on the sides of the two bases close to each other, the brake pad is located between the two corresponding rod holes, and the brake pad is adapted to the brake disc.

[0008] Preferably, the detection mechanism includes a ranging probe and a base block, the inner walls of the two grooves close to each other are each provided with a ranging probe, the top inner wall and the bottom inner wall of the brake are each provided with a base block, the base block is located between the two brake pistons, and the ranging probe is adapted to the base block.

[0009] Preferably, the cleaning mechanism comprises two brush holders and two brushes, wherein the brush holders are disposed on one side adjacent to the two bases, and the brushes are disposed on one side adjacent to the two brush holders, and the brushes are adapted to the brake disc.

[0010] Preferably, the scraping mechanism includes two scraping seats and two scrapers. The scraping seats are arranged on the adjacent sides of the two bases. The scraping seats are located on the left side of the brush seat. The scrapers are arranged on the adjacent sides of the two scraping seats. The scrapers are adapted to the brake disc.

[0011] Preferably, the tensioning mechanism includes a slider, a spring and a push rod, the slider is slidably installed in the buffer cavity, a spring is arranged between the slider and the pressure sensor, a push rod is slidably installed in the rod hole, one end of the push rod away from the brake disc is fixedly connected to the slider, and the end of the push rod close to the brake disc is fixedly installed with a mounting seat.

[0012] Preferably, a mounting groove is provided on a side of the mounting seat close to the brake disc, the mounting groove is matched with the corresponding brush seat and scraper seat, and a mounting mechanism is provided between the mounting groove and the brush seat and scraper seat.

[0013] Preferably, the mounting mechanism comprises a screw hole, a threaded groove and a screw rod, a threaded groove is provided on the inner wall of the mounting groove close to the brake pad, screw holes are provided on the inner wall of the mounting groove away from the brake pad and on the brush seat and the scraper seat, and the same screw rod is installed on the screw hole and the inner thread of the threaded groove.

[0014] Preferably, a screw button is fixedly mounted on one end of the screw rod away from the brake pad, and a paddle is provided on the screw button.

[0015] Beneficial effects of this application:

[0016] 1. Through the cooperation of the distance measuring probe and the base, when the brake pads are constantly worn and thinned, the brake piston can drive the base to move longer and longer, which can drive the distance between the distance measuring probe and the base block to be longer and longer. When the distance between the base block and the distance measuring probe exceeds the set value, an early warning can be issued to the controller, so as to achieve the purpose of monitoring the wear of the brake pads;

[0017] 2. Through the cooperation of the spring, slider, push rod, brush seat, brush, scraper seat and scraper, the spring can drive the brush to stick to the brake disc through elastic force, and can drive the scraper to stick to the brake disc, so as to clean the impurities on the surface of the brake disc by the brush, and to scrape the stubborn impurities on the surface of the brake disc by the scraper, so as to avoid the adhesion of impurities on the brake disc, thereby affecting the monitoring accuracy of the brake pad. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 A schematic diagram of the three-dimensional structure of a wind turbine yaw brake pad wear monitoring device proposed in this application;

[0019] Figure 2 This is a schematic diagram of the main cross-sectional structure of a wind turbine yaw brake pad wear monitoring device proposed in this application;

[0020] Figure 3 This is a schematic structural diagram of part A of a wind turbine yaw brake pad wear monitoring device proposed in this application;

[0021] Figure 4 A schematic diagram of the three-dimensional structure of a scraping mechanism of a yaw brake pad wear monitoring device for a wind turbine set proposed in this application;

[0022] Figure 5 This is a schematic diagram of the three-dimensional structure of a cleaning mechanism of a wind turbine yaw brake pad wear monitoring device proposed in this application.

[0023] In the figure: 1. brake; 2. brake disc; 3. base; 4. brake piston; 5. groove; 6. distance measuring probe; 7. base block; 8. brake pad; 9. buffer chamber; 10. slider; 11. pressure sensor; 12. spring; 13. rod hole; 14. push rod; 15. mounting seat; 16. mounting groove; 17. brush seat; 18. brush; 19. scraper seat; 20. scraper; 21. screw hole; 22. threaded groove; 23. screw; 24. screw button. DETAILED DESCRIPTION

[0024] The technical solution of the present application will be clearly and completely described below in conjunction with specific embodiments. Obviously, the described embodiments are only part of the embodiments of the present application, rather than all of the embodiments. Based on the embodiments of the present application, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present application.

[0025] Reference Figure 1-5 A wind turbine yaw brake pad wear monitoring device comprises a brake 1, a brake disc 2 is arranged in the brake 1, a base 3 is arranged on the top inner wall and the bottom inner wall of the brake 1, two brake pistons 4 are arranged on the top and the bottom of the brake 1, the brake pistons 4 are fixedly connected to the corresponding bases 3, a groove 5 is arranged on the side of the two bases 3 away from each other, and a detection mechanism is arranged between the groove 5 and the brake 1; a cleaning mechanism and a scraping mechanism are arranged on the adjacent side of the two bases 3, a buffer cavity 9 is arranged in the base 3, the buffer cavity 9 is located outside the groove 5, a pressure sensor 11 is arranged on the top inner wall of the buffer cavity 9, a rod hole 13 is arranged on the inner wall of the side of the buffer cavity 9 close to the brake disc 2, a tensioning mechanism is arranged between the rod hole 13 and the buffer cavity 9, a brake pad 8 is arranged on the side of the two bases 3 close to each other, the brake pad 8 is located between the two corresponding rod holes 13, and the brake pad 8 is adapted to the brake disc 2.

[0026] In this embodiment, the detection mechanism includes a distance measuring probe 6 and a base block 7. The inner walls of the two grooves 5 on the side close to each other are each provided with a distance measuring probe 6. The top inner wall and the bottom inner wall of the brake 1 are each provided with a base block 7. The base block 7 is located between the two brake pistons 4. The distance measuring probe 6 is adapted to the base block 7. By providing the detection mechanism, the distance measuring probe 6 can detect that when the distance to the base block 7 exceeds the set value, an early warning can be issued to the controller, thereby achieving the purpose of monitoring the wear of the brake pad.

[0027] In this embodiment, the cleaning mechanism includes two brush holders 17 and two brushes 18. The brush holders 17 are provided on one side adjacent to the two bases 3, and the brushes 18 are provided on one side adjacent to the two brush holders 17. The brushes 18 are adapted to the brake disc 2. By providing the cleaning mechanism, impurities on the surface of the brake disc 2 can be cleaned by the brushes 18.

[0028] In this embodiment, the scraping mechanism includes two scraping seats 19 and two scrapers 20. The scraping seats 19 are provided on the adjacent sides of the two bases 3. The scraping seats 19 are located on the left side of the brush seat 17. The scrapers 20 are provided on the adjacent sides of the two scraping seats 19. The scrapers 20 are adapted to the brake disc 2. By providing the scraping mechanism, the stubborn impurities on the surface of the brake disc 2 can be scraped off by the scraper 20, thereby preventing impurities from adhering to the brake disc 2.

[0029] In this embodiment, the tensioning mechanism includes a slider 10, a spring 12 and a push rod 14. The slider 10 is slidably installed in the buffer cavity 9. The same spring 12 is arranged between the slider 10 and the pressure sensor 11. The push rod 14 is slidably installed in the rod hole 13. The end of the push rod 14 away from the brake disc 2 is fixedly connected to the slider 10, and the end of the push rod 14 close to the brake disc 2 is fixedly installed with a mounting seat 15. By providing a tensioning mechanism, the elastic force of the spring 12 can drive the push rod 14 to approach the brake disc 2, so as to achieve the purpose of driving the brush 18 and the scraper 20 to be close to the brake disc 2.

[0030] In this embodiment, a mounting groove 16 is provided on the side of the mounting seat 15 close to the brake disc 2, and the mounting groove 16 is adapted to the corresponding brush seat 17 and scraper seat 19. A mounting mechanism is provided between the mounting groove 16 and the brush seat 17 and scraper seat 19. By providing the mounting seat 15, the brush seat 17 and the scraper seat 19 can be installed through the mounting seat 15.

[0031] In this embodiment, the mounting mechanism includes a screw hole 21, a threaded groove 22 and a screw rod 23. The threaded groove 22 is provided on the inner wall of the mounting groove 16 close to the brake pad 8, and the inner wall of the mounting groove 16 away from the brake pad 8 and the brush seat 17 and the scraper seat 19 are all provided with screw holes 21. The same screw rod 23 is threadedly installed in the screw hole 21 and the threaded groove 22. By providing the mounting mechanism, the screw rod 23 can be threadedly installed in the screw hole 21 and the threaded groove 22, so as to achieve the purpose of fixing the brush seat 17, the scraper seat 19 and the corresponding mounting seat 15.

[0032] In this embodiment, a screw button 24 is fixedly mounted on one end of the screw rod 23 away from the brake pad 8, and a paddle is provided on the screw button 24. By providing the screw button 24, the paddle can be used to easily rotate the screw button 24, thereby achieving the purpose of facilitating the rotation of the screw rod 23.

[0033] In the present application, during braking, the extended end of the brake piston 4 drives the base 3 to move toward the side close to the brake disc 2, and can drive the brake pad 8 to move toward the side of the brake disc 2, so as to achieve the purpose of braking the brake disc 2 by means of the two brake pads 8. As the brake pad 8 is continuously worn and thinned, the brake piston 4 can drive the base 3 to move a longer and longer distance, and can drive the distance between the distance measuring probe 6 and the base block 7 to be longer and longer. When the distance between the base block 7 and the distance measuring probe 6 exceeds the set value, an early warning can be issued to the controller, so as to achieve the purpose of monitoring the wear of the brake pad. The spring 12 can push the push rod 14 and the mounting seat 15 toward By squeezing close to one side of the brake disc 2, the brush seat 17 can drive the brush 18 to fit tightly against the brake disc 2, and the scraper seat 19 can drive the scraper 20 to fit tightly against the brake disc 2, so as to achieve the purpose of cleaning impurities on the surface of the brake disc 2 by the brush 18, and to achieve the purpose of scraping stubborn impurities on the surface of the brake disc 2 by the scraper 20, so as to prevent impurities from adhering to the brake disc 2 and thus affecting the monitoring accuracy of the brake pad 8. When the brush 18 and the scraper 20 are worn, and the pressure sensor 11 senses that the pressure is less than the set value, an early warning can be issued through the controller, so as to achieve the purpose of reminding the staff to replace it.

Claims

1. A wind turbine yaw brake pad wear monitoring device, characterized in that: The invention comprises a brake (1), wherein a brake disc (2) is arranged inside the brake (1), a base (3) is arranged on the top inner wall and the bottom inner wall of the brake (1), two brake pistons (4) are arranged on the top and the bottom of the brake (1), the brake pistons (4) are fixedly connected to the corresponding bases (3), a groove (5) is arranged on the side of the two bases (3) away from each other, and a detection mechanism is arranged between the groove (5) and the brake (1); A cleaning mechanism and a scraping mechanism are provided on the adjacent sides of the two bases (3); a buffer cavity (9) is provided in the base (3); the buffer cavity (9) is located outside the groove (5); a pressure sensor (11) is provided on the top inner wall of the buffer cavity (9); a rod hole (13) is provided on the inner wall of the buffer cavity (9) close to the brake disc (2); a tensioning mechanism is provided between the rod hole (13) and the buffer cavity (9); a brake pad (8) is provided on the mutually adjacent sides of the two bases (3); the brake pad (8) is located between the two corresponding rod holes (13); and the brake pad (8) is adapted to the brake disc (2).

2. A wind turbine yaw brake pad wear monitoring device according to claim 1, characterized in that: The detection mechanism comprises a distance measuring probe (6) and a base block (7); the distance measuring probe (6) is arranged on the inner wall of the two grooves (5) close to each other; the base block (7) is arranged on the top inner wall and the bottom inner wall of the brake (1); the base block (7) is located between the two brake pistons (4); and the distance measuring probe (6) is matched with the base block (7).

3. A wind turbine yaw brake pad wear monitoring device according to claim 1, characterized in that: The cleaning mechanism comprises two brush seats (17) and two brushes (18), wherein the brush seats (17) are arranged on one side adjacent to the two bases (3), and the brushes (18) are arranged on one side adjacent to the two brush seats (17), and the brushes (18) are adapted to the brake disc (2).

4. A wind turbine yaw brake pad wear monitoring device according to claim 1, characterized in that: The scraping mechanism comprises two scraping seats (19) and two scrapers (20), wherein the scraping seats (19) are arranged on one side adjacent to the two bases (3), the scraping seats (19) are located on the left side of the brush seat (17), and the scrapers (20) are arranged on one side adjacent to the two scraping seats (19), and the scrapers (20) are adapted to the brake disc (2).

5. The wind turbine yaw brake pad wear monitoring device according to claim 1, characterized in that: The tensioning mechanism comprises a slider (10), a spring (12) and a push rod (14); the slider (10) is slidably installed in the buffer cavity (9); a spring (12) is provided between the slider (10) and the pressure sensor (11); a push rod (14) is slidably installed in the rod hole (13); the push rod (14) is fixedly connected to the slider (10) at one end away from the brake disc (2); and a mounting seat (15) is fixedly installed at one end of the push rod (14) close to the brake disc (2).

6. A wind turbine yaw brake pad wear monitoring device according to claim 5, characterized in that: A mounting groove (16) is provided on one side of the mounting seat (15) close to the brake disc (2); the mounting groove (16) is matched with a corresponding brush seat (17) and a scraper seat (19); and a mounting mechanism is provided between the mounting groove (16) and the brush seat (17) and the scraper seat (19).

7. A wind turbine yaw brake pad wear monitoring device according to claim 6, characterized in that: The mounting mechanism comprises a screw hole (21), a thread groove (22) and a screw rod (23); the inner wall of the mounting groove (16) close to the brake pad (8) is provided with a thread groove (22); the inner wall of the mounting groove (16) away from the brake pad (8) is provided with a screw hole (21) and the brush seat (17) and the scraper seat (19); the screw hole (21) and the thread groove (22) are internally threaded with the same screw rod (23).

8. A wind turbine yaw brake pad wear monitoring device according to claim 7, characterized in that: A screw button (24) is fixedly mounted on one end of the screw rod (23) away from the brake pad (8), and a paddle is arranged on the screw button (24).

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