Oil discharge structure of yaw brake

Abstract

The utility model provides an oil discharge structure of a yaw brake, which relates to the field of wind power generation accessories and comprises two cylinder bodies, grooves are arranged on two sides of the surfaces of the cylinder bodies, piston bodies are mounted on the inner walls of the grooves, oil drainage ports are arranged inside the cylinder bodies, oil drainage grooves are arranged inside the cylinder bodies, and the oil drainage grooves are communicated with the oil drainage ports. A mounting plate is mounted at one end of the piston body, and a friction plate body is mounted on the other side of the mounting plate. According to the utility model, leaked oil liquid is discharged into the oil drainage port and is discharged through the oil drainage groove, so that the trapped pressure between the sealing ring and the dustproof ring is reduced, the oil liquid is prevented from leaking to the friction plate, the mounting block is embedded into the mounting groove to rotate, and the mounting block is prevented from falling off from the interior of the mounting groove through the blocking of the check block, so that the follow-up fixation is facilitated; and in the process of rotating the mounting block, the fixing block is attached to one side of the positioning block, and the mounting hole is aligned with the threaded hole, so that the bolt is convenient to mount, and the friction plate is more convenient to replace.

Description

Technical Field

[0001] This utility model relates to the technical field of wind power generation accessories, and in particular to a yaw brake oil draining structure. Background Technology

[0002] The yaw brake is an important component of a wind turbine generator set. It is a braking device used to control the yaw system of the wind turbine nacelle. Its main function is to enable the nacelle to stop accurately at a predetermined position during yaw and to maintain the stability of the nacelle during operation, preventing unnecessary rotation due to factors such as changes in wind direction.

[0003] In existing technology, during use, the piston moves under hydraulic pressure, pushing out the friction plate to clamp the yaw brake disc, thus damping the rotation of the brake disc (at which time the hydraulic pressure of the hydraulically driven piston varies from 5 to 25 bar) or preventing the rotation of the yaw brake disc (at which time the hydraulic pressure of the hydraulically driven piston is about 160 bar). Over a long period of time, the device alternates between damping rotation at 5-25 bar and stopping at 160 bar. As a result, more and more oil seeps out from the sealing ring, and the pressure between the sealing ring and the dust seal increases. If the oil is not discharged in time, it will leak from the lip of the dust seal, contaminating the friction plate. Furthermore, the friction plate needs to be replaced during long-term use, which is inconvenient. Utility Model Content

[0004] The purpose of this invention is to provide a yaw brake oil draining structure to solve the problems mentioned in the background art.

[0005] To achieve the above objectives, the present invention adopts the following technical solution: a yaw brake oil draining structure, comprising: a cylinder body, wherein the number of cylinder bodies is two, and grooves are provided on both sides of the surface of the cylinder body, a piston body is installed on the inner wall of the groove, an oil drain port is provided inside the cylinder body, an oil drain groove is provided inside the cylinder body, an mounting plate is installed on one end of the piston body, and a friction plate body is installed on the other side of the mounting plate.

[0006] In a preferred embodiment, one end of the oil drain port is connected to the groove, and the other end of the oil drain port is connected to the oil drain groove.

[0007] In a preferred embodiment, a dustproof ring body is fixedly sleeved on the top of the piston body surface, and a sealing ring body is fixedly sleeved at equal intervals on the surface of the piston body.

[0008] In a preferred embodiment, a mounting block is mounted on one side of the mounting plate, a mounting groove is provided at one end of the piston body, and a stop block is mounted on the top of the inner wall of the mounting groove.

[0009] In a preferred embodiment, fixing blocks are installed at equal intervals around the surface of the mounting plate, and mounting holes are provided on the surface of the fixing blocks. Threaded holes are provided at equal intervals around one end of the piston body, and positioning blocks are installed at equal intervals around one end of the piston body.

[0010] In a preferred embodiment, a bolt is embedded in the inner wall of the mounting hole, and the surface thread of the bolt is embedded in the inner wall of the threaded hole.

[0011] In a preferred embodiment, a reinforcing shell is mounted on the surface of the cylinder.

[0012] Compared with the prior art, the advantages and positive effects of this utility model are as follows:

[0013] 1. In this utility model, one end of the oil drain port is connected to the groove, and the other end of the oil drain port is connected to the oil drain groove. The seeping oil is discharged into the interior of the oil drain port and then discharged through the oil drain groove. This reduces the pressure trapped between the sealing ring and the dustproof ring, prevents oil from leaking out through the lip of the dustproof ring, and prevents the friction plate from being contaminated by oil, thus making the device perfect.

[0014] 2. In this utility model, the mounting block installed on one side of the mounting plate is embedded into the inside of the mounting groove and rotated. The mounting block rotates inside the mounting groove and is blocked by the stop block, so that the mounting block will not fall out of the mounting groove, which facilitates subsequent fixing. During the rotation of the mounting block, the fixing block is attached to one side of the positioning block, so that the mounting hole and the threaded hole are aligned, which facilitates the installation of bolts, makes the replacement of friction plates more convenient and quick, and makes the device more perfect. Attached Figure Description

[0015] Figure 1 A side view of a yaw brake oil drain structure provided by this utility model;

[0016] Figure 2 A cutaway diagram of the housing of a yaw brake oil drain structure provided by this utility model;

[0017] Figure 3 A side view of the piston body of a yaw brake oil drain structure provided by this utility model;

[0018] Figure 4 Side view of the mounting plate of a yaw brake oil drain structure provided by this utility model.

[0019] Legend:

[0020] 1. Cylinder block; 2. Groove; 3. Piston body; 4. Oil drain port; 5. Oil drain groove; 6. Dust seal body; 7. Sealing ring body; 8. Mounting plate; 9. Friction plate body; 10. Mounting block; 11. Mounting groove; 12. Stop block; 13. Fixing block; 14. Mounting hole; 15. Bolt; 16. Threaded hole; 17. Positioning block; 18. Reinforcing shell. Detailed Implementation

[0021] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0022] Please see Figure 1-4 This utility model provides a technical solution: a yaw brake oil draining structure, including: a cylinder body 1, the number of cylinder bodies 1 is two, grooves 2 are provided on both sides of the surface of the cylinder body 1, a piston body 3 is installed on the inner wall of the groove 2, an oil drain port 4 is provided inside the cylinder body 1, an oil drain groove 5 is provided inside the cylinder body 1, an mounting plate 8 is installed on one end of the piston body 3, and a friction plate body 9 is installed on the other side of the mounting plate 8.

[0023] Specifically: When the device is first used, the piston body 3 installed on the inner wall of the groove 2 moves under the drive of hydraulic force, which drives the friction plate body 9 installed on the top of the mounting plate 8 installed on the top of the piston body 3 to move. There are two cylinders 1, so the friction plate bodies 9 on the two cylinders 1 clamp the yaw brake disc under the drive of the piston body 3, preventing the yaw brake disc from rotating, thereby realizing the braking of the yaw brake disc and making the device more perfect.

[0024] In one embodiment, one end of the oil drain port 4 is connected to the groove 2, and the other end of the oil drain port 4 is connected to the oil drain groove 5.

[0025] Specifically: One end of the oil drain port 4 is connected to the groove 2, and the other end of the oil drain port 4 is connected to the oil drain groove 5. During the process, the seeping oil is discharged into the interior of the oil drain groove 5 through the oil drain port 4, and then discharged from the device through the oil drain groove 5. This reduces the pressure trapped between the sealing ring and the dustproof ring, prevents the oil from leaking out through the lip of the dustproof ring, prevents the friction plate from being contaminated by the oil, and makes the device more perfect.

[0026] In one embodiment, a dustproof ring body 6 is fixedly sleeved on the top of the surface of the piston body 3, and a sealing ring body 7 is fixedly sleeved at equal intervals on the surface of the piston body 3.

[0027] Specifically: the dustproof ring body 6 fixed to the top surface of the piston body 3 blocks external dust, and the multiple sealing ring bodies 7 fixedly fitted on the surface of the piston body 3 maintain a good seal, making the device more perfect.

[0028] In one embodiment, a mounting block 10 is mounted on one side of the mounting plate 8, a mounting groove 11 is provided at one end of the piston body 3, a stop block 12 is mounted on the top of the inner wall of the mounting groove 11, fixing blocks 13 are mounted at equal intervals around the surface of the mounting plate 8, mounting holes 14 are provided on the surface of the fixing blocks 13, threaded holes 16 are provided at equal intervals around the circumference of one end of the piston body 3, positioning blocks 17 are mounted at equal intervals around the circumference of one end of the piston body 3, and bolts 15 are embedded in the inner wall of the mounting holes 14, with the threads of the bolts 15 embedded in the inner wall of the threaded holes 16.

[0029] Specifically: When the friction plate needs to be replaced, the original friction plate is removed. Then, the mounting block 10 installed on one side of the mounting plate 8 is inserted into the mounting groove 11 opened on the top of the piston body 3. The mounting block 10 is rotated until it is stopped by the stop block 12, so that the mounting block 10 is stable inside the mounting groove 11 and will not fall off. This eliminates the need to hold the friction plate by hand when installing the new one. During the rotation of the mounting block 10, the fixing block 13 installed on the surface of the mounting block 10 is attached to one side of the positioning block 17 installed at one end of the piston body 3. The mounting hole 14 on the surface of the fixing block 13 is aligned with the threaded hole 16 at one end of the piston body 3, making it easy to pass the bolt 15 through the mounting hole 14 and tighten it inside the threaded hole 16. This makes the replacement of the friction plate more convenient and quick, and the device more complete.

[0030] In one embodiment, a reinforcing shell 18 is mounted on the surface of the cylinder 1.

[0031] Specifically: The reinforcing shell 18 installed on the surface of the cylinder 1 enhances the overall strength of the device, preventing the device from cracking due to the impact of hydraulic force, thus making the device more perfect.

[0032] Working Principle: When the device is first used, the piston body 3 installed on the inner wall of the groove 2 moves under the drive of hydraulic force. This drives the friction plate body 9 installed on the top of the mounting plate 8 on the piston body 3 to move. Since there are two cylinders 1, the friction plate bodies 9 on the two cylinders 1 clamp the yaw brake disc under the drive of the piston body 3, preventing the yaw brake disc from rotating, thus achieving braking of the yaw brake disc. One end of the oil drain port 4 is connected to the groove 2, and the other end of the oil drain port 4 is connected to the oil drain groove 5. During the process, the leaked oil is discharged into the interior of the oil drain groove 5 through the oil drain port 4, and then discharged from the device through the oil drain groove 5. This reduces the pressure trapped between the sealing ring and the dust seal, prevents oil leakage through the lip of the dust seal, and prevents the friction plate from being contaminated by oil, making the device more complete. When it is necessary to adjust the friction... When replacing the friction pads, remove the old friction pads, and then insert the mounting block 10 installed on one side of the mounting plate 8 into the mounting groove 11 on the top of the piston body 3. Rotate the mounting block 10 until it is stopped by the stop block 12, so that the mounting block 10 is stable inside the mounting groove 11 and will not fall off. This eliminates the need to hold the friction pad by hand when installing the new one. During the rotation of the mounting block 10, the fixing block 13 installed on the surface of the mounting block 10 is attached to one side of the positioning block 17 installed at one end of the piston body 3. The mounting hole 14 on the surface of the fixing block 13 is aligned with the threaded hole 16 at one end of the piston body 3, making it easy to pass the bolt 15 through the mounting hole 14 and tighten it inside the threaded hole 16. This makes the replacement of the friction pads more convenient and quick, and the device more complete.

[0033] The above are merely preferred embodiments of this utility model and are not intended to limit the utility model in any other way. Any person skilled in the art may make changes or modifications to the above-disclosed technical content to create equivalent embodiments for application in other fields. However, any simple modifications, equivalent changes, and modifications made to the above embodiments based on the technical essence of this utility model without departing from the technical solution of this utility model shall still fall within the protection scope of this utility model.

Claims

1. A yaw brake oil draining structure, characterized in that, include: The cylinder (1) consists of two cylinders. Grooves (2) are provided on both sides of the surface of the cylinder (1). A piston body (3) is installed on the inner wall of the groove (2). An oil drain port (4) is provided inside the cylinder (1). An oil drain groove (5) is provided inside the cylinder (1). An mounting plate (8) is installed at one end of the piston body (3). A friction plate body (9) is installed on the other side of the mounting plate (8).

2. The yaw brake oil draining structure according to claim 1, characterized in that: One end of the oil drain port (4) is connected to the groove (2), and the other end of the oil drain port (4) is connected to the oil drain groove (5).

3. The yaw brake oil draining structure according to claim 1, characterized in that: A dustproof ring body (6) is fixedly sleeved on the top of the surface of the piston body (3), and a sealing ring body (7) is fixedly sleeved at equal intervals on the surface of the piston body (3).

4. The yaw brake oil draining structure according to claim 1, characterized in that: A mounting block (10) is installed on one side of the mounting plate (8), and a mounting groove (11) is provided at one end of the piston body (3). A stop block (12) is installed on the top of the inner wall of the mounting groove (11).

5. The yaw brake oil draining structure according to claim 1, characterized in that: The mounting plate (8) has fixing blocks (13) installed at equal intervals around its surface. The fixing blocks (13) have mounting holes (14) on their surface. The piston body (3) has threaded holes (16) at equal intervals around its circumference at one end. The piston body (3) has positioning blocks (17) installed at equal intervals around its circumference at one end.

6. The yaw brake oil draining structure according to claim 5, characterized in that: The inner wall of the mounting hole (14) is fitted with a bolt (15), and the surface thread of the bolt (15) is embedded in the inner wall of the threaded hole (16).

7. The yaw brake oil draining structure according to claim 1, characterized in that: A reinforcing shell (18) is installed on the surface of the cylinder (1).

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