Cleaning device and fan yaw system

Abstract

The embodiment of the utility model provides a cleaning device which is used for cleaning a brake disc of a fan, and the cleaning device comprises a mounting bracket; one side of the cleaning part abuts against a brake disc of the fan, one end of the reversing rod is rotatably connected with the mounting support, and the other end of the reversing rod is rotatably connected with the cleaning part; one end of the supporting rod is connected with the reversing rod, and the other end of the supporting rod abuts against a brake disc of the draught fan; and the powder collecting box is fixed on the mounting bracket, the powder collecting box is arranged on the other side, deviating from the cleaning part, of a brake disc of the fan, and an opening of the powder collecting box faces the cleaning part. The cleaning device provided by the embodiment of the utility model can automatically clean abrasion powder or carbon powder generated on the brake disc of the fan, so that normal operation of the fan is guaranteed. The embodiment of the utility model further provides a fan yaw system.

Description

Technical Field

[0001] The embodiments of the present application relate to the technical field of wind power equipment, and in particular to a cleaning device and a wind turbine yaw system. Background Art

[0002] The yaw system is one of the essential components of a horizontal axis wind turbine. The main function of the yaw system is to cooperate with the control system of the wind turbine so that the wind turbine rotor is always facing the wind, making full use of wind energy and improving the power generation efficiency of the wind turbine. The yaw system of a wind turbine is generally divided into an active yaw system and a passive yaw system. Passive yaw refers to the yaw method that relies on wind power through related mechanisms to complete the wind movement of the wind turbine rotor. The common ones are tail rudder, steering wheel and downwind direction; active yaw refers to the yaw method that uses electric or hydraulic drag to complete the wind movement. The common ones are gear drive and sliding. For grid-connected wind turbines, active yaw gear drive is usually used.

[0003] Since the fan needs to track the wind direction during normal operation, the yaw brake caliper must retain a certain pressure band damping during yaw, which causes the yaw brake pad to produce a large amount of wear powder or carbon powder during the friction with the brake disc, and scatter on the yaw platform. Above the yaw system is the hydraulic system and speed increase system of the fan. If the gear oil or hydraulic oil is scattered on the platform and mixed with the wear powder or carbon powder, it will bring difficulties to the subsequent cleaning and maintenance work and increase a lot of work. Some of the wear powder or carbon powder left on the surface of the brake disc will also enter the groove between the brake disc and the yaw gear ring through the push of the yaw brake pad. After that, a large amount of wear powder or carbon powder will gather in the groove, and will be scattered through the opening of the brake disc with the vibration of the fan, thus affecting the normal operation of the fan. Utility Model Content

[0004] The main purpose of the embodiments of the present application is to provide a cleaning device and a fan yaw system, which can automatically clean the wear powder or carbon powder generated on the brake disc of the fan, thereby ensuring the normal operation of the fan.

[0005] To achieve the above objectives, in a first aspect, an embodiment of the present application provides a cleaning device for cleaning a brake disc of a fan, the cleaning device comprising:

[0006] Mounting bracket;

[0007] A cleaning part, one side of which is against the brake disc of the fan;

[0008] A reversing rod, one end of which is rotatably connected to the mounting bracket, and the other end of which is rotatably connected to the cleaning portion;

[0009] A support rod, one end of which is connected to the middle position of the reversing rod, and the other end of which is against the brake disc of the fan; and

[0010] A powder collecting box is fixed on the mounting bracket. The powder collecting box is arranged on the other side of the brake disc of the fan away from the cleaning part, and the opening of the powder collecting box faces the cleaning part.

[0011] Further, the reversing rod extends in a direction parallel to the brake disc of the fan, and the supporting rod and / or the cleaning portion extends in a direction perpendicular to the brake disc of the fan.

[0012] Further, the reversing rod includes a first connecting rod and a second connecting rod connected to each other, the first connecting rod includes a first end and a second end arranged opposite to each other, the second connecting rod includes a third end and a fourth end arranged opposite to each other, the first end of the first connecting rod is rotatably connected to the mounting bracket, the second end of the first connecting rod is rotatably connected to the third end of the second connecting rod, and the fourth end of the second connecting rod is rotatably connected to the cleaning part.

[0013] Furthermore, the rotation angle range of the cleaning portion relative to the second connecting rod is set to between ±45 degrees.

[0014] Furthermore, it also includes a first rotating shaft, a second rotating shaft, a limiting column and a fixed block, the first rotating shaft, the second rotating shaft and the limiting column are all arranged on the mounting bracket, the first end of the first connecting rod rotates around the first rotating shaft, the middle position of the top edge of the cleaning part is rotatably connected to the mounting bracket through the second rotating shaft, the number of the limiting columns is multiple, the multiple limiting columns are arranged around the first rotating shaft, the multiple limiting columns are at an equal distance from the first rotating shaft, the fixed block is arranged on the side of the cleaning part, the fixed block is provided with a pivot, and the fourth end of the second connecting rod is rotatably connected to the cleaning part through the pivot.

[0015] Furthermore, the support rod includes a connected round rod portion and a spherical portion, one end of the round rod portion is rotatably connected to the second end of the first connecting rod and / or the third end of the second connecting rod, and the other end of the round rod portion is connected to the spherical portion, and the spherical portion rests on the brake disc of the fan.

[0016] Furthermore, the mounting bracket is L-shaped, and includes a connected lateral extension portion and a longitudinal extension portion. The first end of the first connecting rod is rotatably connected to the bottom surface of the lateral extension portion of the mounting bracket, and the longitudinal extension portion is provided with a mounting hole. The mounting bracket is passed through the mounting hole by a screw and cooperates with a nut to be fixed to the baffle of the brake of the fan.

[0017] Furthermore, the cleaning part is in a plate shape, a brush is provided on the bottom edge of the cleaning part, and the brush of the cleaning part interferes with the brake disc of the fan.

[0018] Furthermore, the powder collecting box is in the shape of a column with one side open, and the length of the powder collecting box is greater than the length of the cleaning part.

[0019] In a second aspect, an embodiment of the present application further provides a wind turbine yaw system, comprising a cleaning device as described in any one of the above items.

[0020] In the cleaning device provided in the embodiment of the present application, one end of the support rod is connected to the middle position of the reversing rod, and the other end of the support rod rests on the brake disc of the fan. When the fan yaw system is working, the brake disc will drive the support rod to move, and then drive the reversing rod to move. The reversing rod is rotatably connected to the cleaning part, and the rotation of the reversing rod will drive the cleaning part to deflect. Since one side of the cleaning part rests on the brake disc of the fan, the cleaning part can scrape the wear powder or carbon powder accumulated on the brake disc into the powder collecting box below, thereby realizing automatic cleaning and collection of the wear powder or carbon powder, ensuring the normal operation of the fan. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] 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 will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on the structures shown in these drawings without paying any creative work.

[0022] Figure 1 A structural schematic diagram of the installation state of the cleaning device provided in an embodiment of the present application;

[0023] Figure 2 for Figure 1 A schematic plan view of the cleaning device in a first use state;

[0024] Figure 3 for Figure 2 A planar structural schematic diagram of the second usage state of the cleaning device.

[0025] Description of Figure Numbers:

[0026] Label name Label name 100 Cleaning device 10 Brake disc 101 Mounting Bracket 102 Cleaning Department 103 Reversing rod 104 Support rod 105 Powder box 131 First connecting rod 132 Second connecting rod 1311 First end 1312 Second end 1321 The third end 1322 The fourth end 106 First shaft 107 Second shaft 108 Limit column 109 Fixed block 191 Pivot 141 Round rod 142 Spherical part 111 Lateral extension 112 Longitudinal extension 1121 Mounting holes

[0027] The realization of the purpose, functional features and advantages of this application will be further explained in conjunction with embodiments and with reference to the accompanying drawings. DETAILED DESCRIPTION

[0028] The following will be combined with the drawings in the embodiments of the present application to clearly and completely describe the technical solutions in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, not all of the embodiments. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of this application.

[0029] It should be noted that all directional indications in the embodiments of the present application (such as up, down, left, right, front, back, etc.) are only used to explain the relative position relationship, movement status, etc. between the components under a certain specific posture (as shown in the accompanying drawings). If the specific posture changes, the directional indication will also change accordingly.

[0030] In this application, unless otherwise clearly specified and limited, the terms "connection", "fixation", etc. should be understood in a broad sense. For example, "fixation" can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements, unless otherwise clearly defined. For ordinary technicians in this field, the specific meanings of the above terms in this application can be understood according to specific circumstances.

[0031] In addition, the descriptions of "first", "second", etc. in this application are only for descriptive purposes and cannot be understood as indicating or implying their relative importance or implicitly indicating the number of technical features indicated. Therefore, the features defined as "first" and "second" may explicitly or implicitly include at least one of the features. In addition, the meaning of "and / or" appearing in the full text is to include three parallel solutions. Taking "A and / or B as an example", it includes solution A, or solution B, or solutions that satisfy both A and B. In addition, the technical solutions between the various embodiments can be combined with each other, but they must be based on the ability of ordinary technicians in this field to implement them. When the combination of technical solutions is contradictory or cannot be implemented, it should be deemed that such combination of technical solutions does not exist and is not within the scope of protection required by this application.

[0032] Therefore, refer to Figure 1The embodiment of the present application provides a cleaning device 100 for cleaning the brake disc 10 of the fan. The cleaning device 100 includes a mounting bracket 101, a cleaning portion 102, a reversing rod 103, a support rod 104 and a powder collecting box 105, wherein one side of the cleaning portion 102 abuts against the brake disc 10 of the fan, one end of the reversing rod 103 is rotatably connected to the mounting bracket 101, and the other end of the reversing rod 103 is rotatably connected to the cleaning portion 102, and the support rod 104 is connected to the powder collecting box 105. One end of the support rod 104 is connected to the reversing rod 103, and the other end of the support rod 104 rests on the brake disc 10 of the fan. The brake disc 10 of the fan can drive the support rod 104 to move, and then drive the reversing rod 103 to rotate, so that the cleaning part 102 is deflected. The powder collecting box 105 is fixed on the mounting bracket 101. The powder collecting box 105 is arranged on the other side of the brake disc 10 of the fan away from the cleaning part 102, and the opening of the powder collecting box 105 faces the cleaning part 102.

[0033] Specifically, Figure 1 As shown, in the cleaning device 100 provided in the embodiment of the present application, one end of the support rod 104 is connected to the reversing rod 103, and the other end of the support rod 104 rests on the brake disc 10 of the fan. When the fan yaw system is working, the brake disc 10 will drive the support rod 104 to move, and then drive the reversing rod 103 to move, and the reversing rod 103 is rotatably connected to the cleaning part 102. The rotation of the reversing rod 103 will drive the cleaning part 102 to deflect. Since one side of the cleaning part 102 rests on the brake disc 10 of the fan, the cleaning part 102 can scrape the wear powder or carbon powder accumulated on the brake disc 10 into the powder collecting box 105 below, thereby realizing automatic cleaning and collection of the wear powder or carbon powder, and ensuring the normal operation of the fan.

[0034] It should be noted that the function of the support rod 104 is to transmit the movement of the brake disc 10 to the reversing rod 103. Therefore, the connection method between the support rod 104 and the reversing rod 103 is for the purpose of achieving the aforementioned function. For example, the support rod 104 can be connected to a position other than the end of the reversing rod 103, such as the central position of the reversing rod 103, etc. The specific connection position depends on the actual situation and is not limited here.

[0035] Further, refer to Figure 1 In some embodiments of the present application, the reversing rod 103 extends in a direction parallel to the brake disc 10 of the fan, and the support rod 104 and / or the cleaning portion 102 extends in a direction perpendicular to the brake disc 10 of the fan.

[0036] Specifically, Figure 1As shown, the support rod 104 extends in a direction perpendicular to the brake disc 10 of the fan, so that the brake disc 10 can drive the support rod 104 to move, and the reversing rod 103 is used to transmit the movement of the support rod 104 to the cleaning part 102, so that the cleaning part 102 is offset to scrape the wear powder or carbon powder accumulated on the brake disc 10 into the powder collecting box 105 below, thereby realizing automatic cleaning and collection of the wear powder or carbon powder, and further ensuring the normal operation of the fan.

[0037] Further, refer to Figure 1 In some embodiments of the present application, the reversing rod 103 includes a first connecting rod 131 and a second connecting rod 132 connected to each other, the first connecting rod 131 includes a first end 1311 and a second end 1312 arranged opposite to each other, the second connecting rod 132 includes a third end 1321 and a fourth end 1322 arranged opposite to each other, the first end 1311 of the first connecting rod 131 is rotatably connected to the mounting bracket 101, the second end 1312 of the first connecting rod 131 is rotatably connected to the third end 1321 of the second connecting rod 132, and the fourth end 1322 of the second connecting rod 132 is rotatably connected to the cleaning portion 102.

[0038] Specifically, the reversing rod 103 transmits the movement of the supporting rod 104 to the cleaning portion 102, so that the cleaning portion 102 is offset. The reversing rod 103 includes a first connecting rod 131 and a second connecting rod 132 connected to each other. The first connecting rod 131 includes a first end 1311 and a second end 1312 arranged opposite to each other. The second connecting rod 132 includes a third end 1321 and a fourth end 1322 arranged opposite to each other. The first end 1311 of the first connecting rod 131 is rotatably connected to the mounting bracket 101, and the second end 1312 of the first connecting rod 131 is rotatably connected to the mounting bracket 101. The third end 1321 of the second connecting rod 132 is rotatably connected, and the fourth end 1322 of the second connecting rod 132 is rotatably connected to the cleaning part 102. Therefore, the support rod 104 can drive the second end 1312 of the first connecting rod 131 and the third end 1321 of the second connecting rod 132 to rotate, thereby driving the cleaning part 102 to shift, so as to scrape the wear powder or carbon powder accumulated on the brake disc 10 into the powder collecting box 105 below, thereby realizing automatic cleaning and collection of the wear powder or carbon powder, and further ensuring the normal operation of the fan.

[0039] Further, refer to Figures 1 to 3 In some embodiments of the present application, the rotation angle range of the cleaning portion 102 relative to the second connecting rod 132 is set to between ±45 degrees.

[0040] Specifically, Figure 1As shown, when the wind turbine yaw system is working, the brake disc 10 will drive the support rod 104 to move, and then drive the reversing rod 103 to move, and the reversing rod 103 is rotatably connected to the cleaning part 102, and the rotation of the reversing rod 103 will drive the cleaning part 102 to deflect. Figures 2 to 3 As shown, when the fan unit yaws counterclockwise, the maximum rotation angle of the cleaning part 102 relative to the second connecting rod 132 is 45 degrees, and when the fan unit yaws clockwise, the maximum rotation angle of the cleaning part 102 relative to the second connecting rod 132 is negative 45 degrees. One side of the cleaning part 102 abuts against the brake disc 10 of the fan. Through the above arrangement, the cleaning part 102 can scrape the wear powder or carbon powder accumulated on the brake disc 10 into the powder collecting box 105 below, thereby further realizing automatic cleaning and collection of the wear powder or carbon powder, ensuring the normal operation of the fan.

[0041] Further, refer again to Figures 1 to 3 In some embodiments of the present application, the cleaning device 100 also includes a first rotating shaft 106, a second rotating shaft 107, a limiting column 108 and a fixed block 109. The first rotating shaft 106, the second rotating shaft 107 and the limiting column 108 are all arranged on the mounting bracket 101. The first end 1311 of the first connecting rod 131 rotates around the first rotating shaft 106. The middle position of the top edge of the cleaning part 102 is rotatably connected to the mounting bracket 101 through the second rotating shaft 107. The number of limiting columns 108 is multiple, and the multiple limiting columns 108 are arranged around the first rotating shaft 106. The distance between the multiple limiting columns 108 and the first rotating shaft 106 is equal. The fixed block 109 is arranged on the side of the cleaning part 102. The fixed block 109 is provided with a pivot 191. The fourth end 1322 of the second connecting rod 132 is rotatably connected to the cleaning part 102 through the pivot 191.

[0042] Specifically, Figures 1 to 3 As shown, the first end 1311 of the first connecting rod 131 rotates around the first rotating shaft 106, and the cleaning part 102 rotates around the second rotating shaft 107. When the yaw system of the fan is working, the brake disc 10 will drive the support rod 104 to move, and then drive the first connecting rod 131 and the second connecting rod 132 of the reversing rod 103 to move, and the reversing rod 103 is rotatably connected to the cleaning part 102. The rotation of the reversing rod 103 will drive the cleaning part 102 to deflect. The function of the limiting column 108 is to limit the rotation of the first connecting rod 131, thereby limiting the rotation angle range of the cleaning part 102 relative to the second connecting rod 132 to be set between ±45 degrees. One side of the cleaning part 102 is against the brake disc 10 of the fan. Through the above-mentioned setting, the cleaning part 102 can scrape the wear powder or carbon powder accumulated on the brake disc 10 into the powder collecting box 105 below, thereby further realizing the automatic cleaning and collection of the wear powder or carbon powder, and ensuring the normal operation of the fan.

[0043] Further, refer to Figures 1 to 3 In some embodiments of the present application, the support rod 104 includes a connected round rod portion 141 and a spherical portion 142, one end of the round rod portion 141 is rotatably connected to the second end 1322 of the first connecting rod 131 and / or the third end 1321 of the second connecting rod 132, and the other end of the round rod portion 141 is connected to the spherical portion 142, and the spherical portion 142 rests on the brake disc 10 of the fan.

[0044] Specifically, when the fan yaw system is working, since the support rod 104 abuts against the brake disc 10 of the fan, the brake disc 10 will drive the support rod 104 to move, and then drive the reversing rod 103 to move, and the reversing rod 103 is rotatably connected to the cleaning part 102, and the rotation of the reversing rod 103 will drive the cleaning part 102 to deflect. The support rod 104 includes a connected round rod portion 141 and a spherical portion 142, wherein the spherical portion 142 abuts against the brake disc 10 of the fan, and the round rod portion 141 is used to connect the spherical portion 142 with the first connecting rod 131 and / or the second connecting rod 132. When the spherical portion 142 of the support rod 104 abuts against the brake disc 10, the contact area between the support rod 104 and the brake disc 10 can be reduced, and the spherical surface of the spherical portion 142 can prevent the support rod 104 from scratching the brake disc 10, thereby not affecting the normal operation of the brake disc 10.

[0045] Further, refer to Figure 1 In some embodiments of the present application, the mounting bracket 101 is L-shaped, and the mounting bracket 101 includes a connected lateral extension portion 111 and a longitudinal extension portion 112. The first end portion 1311 of the first connecting rod 131 is rotatably connected to the bottom surface of the lateral extension portion 111 of the mounting bracket 101, and the longitudinal extension portion 112 is provided with a mounting hole 1121. The mounting bracket 101 is fixed to the baffle 11 of the brake of the fan by a screw rod passing through the mounting hole 1121 and cooperating with a nut.

[0046] Specifically, the mounting bracket 101 is used to fix the cleaning part 102, the reversing rod 103, the support rod 104 and the powder collecting box 105, etc. It includes a connected lateral extension part 111 and a longitudinal extension part 112. The first end 1311 of the first connecting rod 131 is rotatably connected to the bottom surface of the lateral extension part 111 of the mounting bracket 101. The longitudinal extension part 112 is provided with a mounting hole 1121. The mounting bracket 101 is penetrated by a screw in the mounting hole 1121 and cooperates with a nut to be fixed to the baffle 11 of the brake of the fan, so that the cleaning device 100 can be installed on the brake disc 10, thereby realizing automatic cleaning and collection of wear powder or carbon powder, and ensuring the normal operation of the fan.

[0047] Further, refer again to Figures 1 to 3In some embodiments of the present application, the cleaning portion 102 is plate-shaped, and a brush (not shown) is provided on the bottom edge of the cleaning portion 102 . The brush of the cleaning portion 102 interferes with the brake disc 10 of the fan.

[0048] Specifically, the cleaning part 102 is used to clean the wear powder or carbon powder on the surface of the brake disc 10. A brush is provided on the bottom edge of the cleaning part 102. The brush of the cleaning part 102 interferes with the brake disc 10 of the fan. When the fan yaw system is working, the brake disc 10 will drive the support rod 104 to move, and then drive the reversing rod 103 to move. The reversing rod 103 is rotatably connected to the cleaning part 102. The rotation of the reversing rod 103 will drive the cleaning part 102 to deflect. Since the brush on the bottom edge of the cleaning part 102 is against the brake disc 10 of the fan, the brush of the cleaning part 102 can scrape the wear powder or carbon powder accumulated on the brake disc 10 into the powder collecting box 105 below, thereby realizing automatic cleaning and collection of wear powder or carbon powder, ensuring that the fan can operate normally and will not scratch the surface of the brake disc 10.

[0049] Further, refer to Figure 1 In some embodiments of the present application, the powder collecting box 105 is in the shape of a column with one side open, and the length of the powder collecting box 105 is greater than the length of the cleaning part 102 .

[0050] Specifically, the function of the powder collecting box 105 is to collect the wear powder or carbon powder that falls after the cleaning part 102 cleans. The powder collecting box 105 is a columnar body with one side open. The length of the powder collecting box 105 is greater than the length of the cleaning part 102, thereby ensuring that the fallen wear powder or carbon powder can be completely collected in the powder collecting box 105, thereby preventing the wear powder or carbon powder from being scattered, and further ensuring the normal operation of the fan.

[0051] In addition, refer to Figure 1 The embodiment of the present application also provides a wind turbine yaw system, which includes the cleaning device 100 as described above. The specific structure of the cleaning device 100 refers to the above embodiment. Since the cleaning device 100 adopts all the technical solutions of all the above embodiments, it at least has all the beneficial effects brought by the technical solutions of the above embodiments, which will not be repeated here one by one.

[0052] The above description is only a preferred embodiment of the present application, and does not limit the patent scope of the present application. All equivalent structural changes made by using the contents of the present application specification and drawings under the inventive concept of the present application, or directly / indirectly applied in other related technical fields are included in the patent protection scope of the present application.

Claims

1. A cleaning device for cleaning the brake disc of a fan, characterized in that: The cleaning device comprises: Mounting bracket; A cleaning part, one side of which is against the brake disc of the fan; A reversing rod, one end of which is rotatably connected to the mounting bracket, and the other end of which is rotatably connected to the cleaning portion; A support rod, one end of which is connected to the reversing rod, and the other end of which is against the brake disc of the fan, the brake disc of the fan can drive the support rod to move, and then drive the reversing rod to rotate, so that the cleaning part is deflected; and A powder collecting box is fixed on the mounting bracket. The powder collecting box is arranged on the other side of the brake disc of the fan away from the cleaning part, and the opening of the powder collecting box faces the cleaning part.

2. The cleaning device according to claim 1, characterized in that The reversing rod extends in a direction parallel to the brake disc of the fan, and the supporting rod and / or the cleaning portion extends in a direction perpendicular to the brake disc of the fan.

3. The cleaning device according to claim 2, characterized in that The reversing rod includes a first connecting rod and a second connecting rod connected to each other, the first connecting rod includes a first end and a second end arranged opposite to each other, the second connecting rod includes a third end and a fourth end arranged opposite to each other, the first end of the first connecting rod is rotatably connected to the mounting bracket, the second end of the first connecting rod is rotatably connected to the third end of the second connecting rod, and the fourth end of the second connecting rod is rotatably connected to the cleaning part.

4. The cleaning device according to claim 3, characterized in that: The rotation angle range of the cleaning portion relative to the second connecting rod is set to be between ±45 degrees.

5. The cleaning device according to claim 4, characterized in that It also includes a first rotating shaft, a second rotating shaft, a limiting column and a fixed block, the first rotating shaft, the second rotating shaft and the limiting column are all arranged on the mounting bracket, the first end of the first connecting rod rotates around the first rotating shaft, the middle position of the top edge of the cleaning part is rotatably connected to the mounting bracket through the second rotating shaft, the number of the limiting columns is multiple, the multiple limiting columns are arranged around the first rotating shaft, the multiple limiting columns are at an equal distance from the first rotating shaft, the fixed block is arranged on the side of the cleaning part, the fixed block is provided with a pivot, and the fourth end of the second connecting rod is rotatably connected to the cleaning part through the pivot.

6. The cleaning device according to claim 5, characterized in that The support rod includes a connected round rod portion and a spherical portion, one end of the round rod portion is rotatably connected to the second end of the first connecting rod and / or the third end of the second connecting rod, and the other end of the round rod portion is connected to the spherical portion, and the spherical portion rests on the brake disc of the fan.

7. The cleaning device according to claim 6, characterized in that The mounting bracket is L-shaped, and includes a connected lateral extension portion and a longitudinal extension portion. The first end of the first connecting rod is rotatably connected to the bottom surface of the lateral extension portion of the mounting bracket, and the longitudinal extension portion is provided with a mounting hole. The mounting bracket is passed through the mounting hole by a screw and cooperates with a nut to be fixed to the baffle of the brake of the fan.

8. The cleaning device according to claim 1, characterized in that The cleaning part is in the shape of a plate, and a brush is arranged at the bottom edge of the cleaning part. The brush of the cleaning part interferes with the brake disc of the fan.

9. The cleaning device according to claim 8, characterized in that The powder collecting box is in the shape of a column with one side open, and the length of the powder collecting box is greater than the length of the cleaning part.

10. A wind turbine yaw system, characterized in that: Comprising a cleaning device as described in any one of claims 1 to 9.

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