A wind power generator collector ring carbon brush device and method

Abstract

The present application relates to carbon brush maintenance technical field, especially provide a kind of wind driven generator collecting ring carbon brush device and method, solve the problem of low carbon brush maintenance efficiency, the wind driven generator collecting ring carbon brush device includes carbon fire cabin, cabin door of sliding fit in the front side of the carbon fire cabin, rotor sleeve being worn in the carbon fire cabin, and carbon brush assembly mechanism being set on the rotor sleeve;And carbon brush fixed seat is assembled or removed with carbon brush, by positioning guide rail smooth guidance, so improve stability when moving, especially when the inner end of carbon brush is inserted into rotor sleeve and lapped with collecting ring by positioning hole using carbon brush fixed seat, it can be ensured that collecting ring on rotor rotates at high speed, carbon brush will not fall off outside due to just lapped on collecting ring, at the same time, carbon brush does not need to be fixed by screw, when maintaining, it can be removed from rotor sleeve outward under the driving of carbon brush fixed seat, improve maintenance efficiency.

Description

Technical Field

[0001] This invention relates to the field of generator carbon brush maintenance technology, and in particular to a collector ring carbon brush device and method for wind turbine generators. Background Technology

[0002] Wind turbines are relatively large, consisting of a large fan blade at the front, a turbine head located behind the blades, and an engineering mast for mounting the turbine head. The turbine head and fan blades are the core components. The turbine head contains a rotor, on which the blades are mounted and driven to rotate. Carbon brushes rest on the rotor's magnetic rings to create a magnetic field, aiding in the rotor's rotation of the blades and ensuring the rotor supplies current to the energy storage system. A carbon brush compartment with a door is located behind the turbine head. The carbon brushes are mounted on the rotor from inside the compartment. During maintenance, the door is opened, and the carbon brushes are removed from the side of the rotor for easy replacement.

[0003] The existing carbon burner is small in size, and the carbon brushes installed on the rotor are close to the inner wall of the carbon burner. There is only a narrow space between the carbon brushes and the inner wall of the carbon burner. When opening the carbon burner to maintain or replace the carbon brushes, it is difficult to insert fingers into the narrow space to operate the fixing screws on the carbon brushes to remove them. The operation is inconvenient and the maintenance efficiency is low. Summary of the Invention

[0004] The technical problem to be solved by the present invention is that by setting an easy-to-operate carbon brush assembly mechanism in the carbon fire chamber, the carbon brush can be easily removed and installed during maintenance, thereby improving maintenance efficiency.

[0005] The technical solution of the present invention is a carbon brush device for a wind turbine collector ring, comprising a carbon fire chamber, a door that is slidably fitted on the front side of the carbon fire chamber, a rotor sleeve that passes through the carbon fire chamber, and a carbon brush assembly mechanism disposed on the rotor sleeve.

[0006] The rotor of the wind turbine is housed within the rotor sleeve, which has a slot facing the hatch. The two ends of the slot are located near the inner wall of the carbon burner compartment. The carbon brush assembly mechanism includes a positioning plate fixed to one end of the slot, with a positioning hole perpendicular to the outside of the slot. The carbon brush assembly mechanism also includes a guide seat fixed to the outer wall of the rotor sleeve and perpendicular to the outside of the positioning plate. The guide seat has a positioning guide rail aligned with the positioning hole. The carbon brush assembly mechanism also includes a sliding fit on the positioning guide rail, allowing it to move along the linear direction of the positioning hole. A reciprocating carbon brush holder has a carbon brush placement groove on its surface that is aligned with the positioning hole. A carbon brush is placed in the placement groove. As the carbon brush holder moves, the carbon brush can be quickly assembled onto the rotor of the generator by inserting it into the rotor sleeve along the positioning hole. A locking wheel is also rotatably mounted on the inner wall of the carbon brush chamber. The locking wheel is on the same side as the carbon brush assembly mechanism and is located in front of the carbon brush holder. The locking wheel has a positioning cam that can lock the carbon brush holder when rotated and fix the position of the carbon brush assembled on the rotor of the generator.

[0007] A guide hole is provided inward from the front end of the guide seat. A movable plate is fixed to the front end of the carbon brush holder. A guide rod is fixed on the movable plate and slidably fitted in the guide hole. A return spring is sleeved on the guide rod, with its two ends elastically contacting the movable plate and the guide seat respectively.

[0008] As a further preferred embodiment, the positioning cam is fixed to the eccentric side of the locking wheel and positioned above the carbon brush holder.

[0009] As a further preferred embodiment, the end of the carbon brush holder near the locking wheel is provided with a rounded corner facing the rotational trajectory of the positioning cam.

[0010] As a further preferred embodiment, the outer circumference of the locking wheel is provided with a toothed surface, the hatch slides up and down at the front end of the carbon fire chamber, and the inner surface of the hatch is provided with a rack on the same side as the toothed surface. The rack meshes with the toothed surface and can drive the locking wheel to rotate clockwise or counterclockwise when the hatch moves up and down. When the hatch descends, the locking wheel rotates clockwise through meshing and drives the positioning cam to separate from the front rounded corner of the carbon brush holder. When the hatch rises, the locking wheel rotates counterclockwise through meshing and drives the positioning cam to press against the front end of the carbon brush holder.

[0011] As a further preferred embodiment, the end shape of the slot is an arc-shaped surface, and there are two positioning plates, symmetrically located on the upper and lower sides of the slot. Each of the two positioning plates has symmetrical positioning holes. The guide seat is located between the two positioning plates and has two positioning guide rails, one upper and one lower. The two positioning guide rails are respectively located on the straight line of the two positioning holes. Each of the two positioning guide rails has a carbon brush fixing seat that is slidably installed on it, and each of the two carbon brush fixing seats has a carbon brush placement groove, and each of the two carbon brush placement grooves contains a carbon brush.

[0012] As a further preferred embodiment, the two ends of the movable plate are respectively fixed on the upper and lower carbon brush holders, the guide rod is installed in the middle of the movable plate, the guide hole is opened in the middle of the guide seat, and the guide rod is slidably engaged in the guide seat from the middle of the guide seat.

[0013] As a further preferred embodiment, the carbon brush placement groove is opened downward from the top of the carbon brush holder. The carbon brush placement groove includes a large groove at one end near the positioning hole and a wire groove at the other end near the locking wheel. The wire groove and the large groove are connected front and back, and the width of the large groove is greater than the width of the wire groove.

[0014] As a further preferred embodiment, a side groove is provided from the wire groove to the inner surface of the carbon brush holder.

[0015] The present invention also provides a method for using a collector ring carbon brush device for a wind turbine generator, comprising the following steps:

[0016] Step S1: Prepare the charcoal fire chamber, open a track at its front end, fit the door to the front end of the charcoal fire chamber through the track, and set a damping strip in the track to ensure that the door can be fixed in position when it slides to a certain position. The door and the front end of the charcoal fire chamber are fixed together by a lock.

[0017] Step S2: When assembling the carbon brush and the slip ring on the wind turbine shaft for the first time, place the carbon brush in the carbon brush placement slot, with the insertion end of the carbon brush in the large slot and the wire harness part in the large slot in the wire groove. Then, bend the end of the wire harness from the side slot to the inside of the carbon brush holder and connect it to the wire. Raise and slide the hatch to close the operating port of the carbon fire chamber. At the same time, drive the positioning cam to form a compression with the front end of the carbon brush holder, pushing the insertion end of the carbon brush into the rotor sleeve and docking with the slip ring.

[0018] Step S3: During the later maintenance of carbon brushes, the door slides down and opens the carbon firing chamber, causing the positioning cam to separate from the front end of the carbon brush holder. The carbon brush is then pulled out from inside the rotor sleeve by the carbon brush holder, allowing for carbon brush replacement and maintenance.

[0019] The advantages of this invention compared to existing technologies are as follows: The carbon brush is placed in the carbon brush placement slot. As the carbon brush moves with the carbon brush holder, its inner end can be inserted into the rotor sleeve along the positioning hole, and its inner end can quickly overlap the slip ring. Therefore, when installing, maintaining, or replacing the carbon brush, it is closer to the front operating port of the carbon firing chamber. When opening the chamber door for carbon brush maintenance, only the carbon brush holder needs to be moved forward or backward at close range. Furthermore, when assembling or removing the carbon brush with the holder, it is smoothly guided by the positioning guide rail, thus improving stability during movement, especially with the utilization of the carbon brush... When the carbon brush holder inserts the inner end of the carbon brush into the rotor sleeve through the positioning hole and overlaps with the slip ring, it ensures that the carbon brush will not fall off due to merely overlapping with the slip ring when the rotor rotates at high speed. It also eliminates the need for screws to fix the carbon brush. During maintenance, the carbon brush holder can be used to remove the brush from the rotor sleeve. The operator simply needs to remove the carbon brush from the carbon brush slot, replace it, and then reassemble it as described in the initial assembly, overlapping and positioning it with the slip ring on the rotor inside the rotor sleeve. This improves maintenance efficiency. Attached Figure Description

[0020] Figure 1 This is a schematic diagram of the structure of an embodiment of the present invention.

[0021] Figure 2 In the embodiments of the present invention, by Figure 1 A schematic diagram of the enlarged structure of part A.

[0022] Figure 3 In the embodiments of the present invention, by Figure 2 A schematic diagram of the structure when cut open.

[0023] Figure 4 In the embodiments of the present invention, by Figure 3 A schematic diagram of the enlarged structure of section B.

[0024] Figure 5 In the embodiments of the present invention, by Figure 3 A schematic diagram of the planar structure of the guide seat when it is cut open.

[0025] Figure 6 This is a schematic diagram of the structure from another rotating perspective in an embodiment of the present invention.

[0026] Figure 7 In the embodiments of the present invention, by Figure 6 A schematic diagram of the enlarged structure of section C.

[0027] In the diagram: 1. Carbon combustion chamber; 101. Moving plate; 102. Guide rod; 103. Return spring; 104. Rounded corner; 2. Chamber door; 21. Rack; 3. Rotor sleeve; 4. Carbon brush assembly mechanism; 5. Groove; 6. Positioning plate; 7. Positioning hole; 8. Guide seat; 81. Guide hole; 9. Positioning guide rail; 10. Carbon brush fixing seat; 11. Carbon brush placement groove; 111. Large groove; 112. Wire groove; 113. Side groove; 12. Carbon brush; 13. Locking wheel; 131. Tooth surface; 14. Positioning cam. Detailed Implementation

[0028] The above and other embodiments and advantages of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments.

[0029] In one implementation, such as Figures 1-7 As shown: This embodiment provides a wind turbine collector ring carbon brush device, including a carbon fire chamber 1, a door 2 that slides on the front side of the carbon fire chamber 1, a rotor sleeve 3 that passes through the carbon fire chamber 1, and a carbon brush assembly mechanism 4 disposed on the rotor sleeve 3.

[0030] In the prior art, wind turbines all have a carbon fire chamber 1, which contains a rotor sleeve 3. The rotor sleeve 3 does not rotate; instead, the wind turbine rotor rotates inside the rotor sleeve 3. The wind turbine rotor is connected to the turbine head and the base and is used to house the tail end of the rotor. Since the rotor has carbon brushes that generate electromagnetic induction with it, the purpose of setting up the carbon fire chamber 1 is to set up a toolbox for easy maintenance at the tail end of the rotor. The carbon brushes are located in the carbon fire chamber 1 and are attached to the rotor from inside the carbon fire chamber 1. When the door 2 is opened, the carbon brushes are exposed in the carbon fire chamber 1, making it easy to remove the carbon brushes from the slip rings of the rotor.

[0031] In this embodiment, the carbon brush assembly mechanism 4 provided on the rotor sleeve 3 improves the functionality of the rotor sleeve 3. The carbon brush assembly mechanism 4 facilitates the removal of the carbon brush from the rotor sleeve 3 or its quick installation from the rotor sleeve 3 and its rapid docking with the slip ring on the wind turbine rotor inside the rotor sleeve 3. This solves the inconvenience caused by the difficulty of inserting fingers into the narrow carbon fire chamber 1 space, requiring the operation of screws or the removal or assembly of the carbon brush and slip ring, thus improving maintenance efficiency.

[0032] The structure of the carbon brush assembly mechanism 4 and its relationship with the carbon brush are described as follows: First, a slot 5 facing the hatch 2 is opened on the rotor sleeve 3 in this embodiment. The two ends of the slot 5 are close to the inner wall of the carbon fire chamber 1, and the shape and size of the slot 5 are defined. Second, the carbon brush assembly mechanism 4 installed on the rotor sleeve 3 is described in detail: The carbon brush assembly mechanism 4 includes a positioning plate 6 fixed to one end of the slot 5. The positioning plate 6 has a positioning hole 7 perpendicular to the outside of the slot 5. The carbon brush can be pushed into the rotor sleeve 3 by the positioning hole 7 and quickly overlap with the slip ring on the fan rotor inside the rotor sleeve 3. After overlapping, the outer end of the carbon brush is exposed outside the positioning plate 6. When the fan rotor rotates, the outer end of the carbon brush is positioned on the positioning plate 6 through the positioning hole 7 and will not fall off.

[0033] The carbon brush assembly mechanism 4 also includes a guide seat 8 fixed to the outer wall of the rotor sleeve 3 and perpendicular to the outer side of the positioning plate 6. The guide seat 8 has a positioning guide rail 9 aligned with the positioning hole 7. The carbon brush assembly mechanism 4 also includes a carbon brush fixing seat 10 slidably fitted onto the positioning guide rail 9 and capable of reciprocating in the linear direction of the positioning hole 7. The carbon brush fixing seat 10 has a carbon brush placement groove 11 aligned with the positioning hole 7. The carbon brush 12 is placed in the carbon brush placement groove 11. When the carbon brush 12 moves with the carbon brush fixing seat 10, its inner end can be inserted into the rotor sleeve 3 along the positioning hole 7, and its inner end can be quickly assembled (overlapped) onto the generator rotor (on the slip rings on the rotor). Therefore, the carbon brush fixing seat 10 is a carrier used to drive whether the carbon brush 12 overlaps with the slip rings on the rotor, or to drive whether the carbon brush 12 detaches from the slip rings on the rotor. As shown in the figure, the carbon brush holder 10 is closer to the front operating port of the carbon fire chamber 1. Therefore, when opening the chamber door 2 to maintain the carbon brush 12, it is only necessary to move the carbon brush holder 10 forward or backward at close range. When the carbon brush holder 10 is assembled or removed with the carbon brush 12, it is smoothly guided by the positioning guide rail 9, thus improving the stability during movement. In particular, when the inner end of the carbon brush 12 is inserted into the rotor sleeve 3 through the positioning hole 7 and overlaps with the slip ring using the carbon brush holder 10, it can be ensured that the carbon brush 12 will not fall off due to merely overlapping with the slip ring when the rotor rotates at high speed. At the same time, it is not necessary to fix the carbon brush 12 with screws. During maintenance, it can be removed from inside the rotor sleeve 3 to the outside by the carbon brush holder 10. Both removal and installation have stable guidance. First, it ensures that the inner end of the carbon brush 12 is accurately overlapped with the slip ring. Second, it ensures that the carbon brush 12 moves smoothly and will not break when removed in the reverse direction.

[0034] To further shorten the distance of the carbon brush holder 10, in this embodiment, a locking wheel 13 is also rotatably installed on the inner wall of the carbon fire chamber 1. The locking wheel 13 is on the same side as the carbon brush assembly mechanism 4 and is located in front of the carbon brush holder 10. The locking wheel 13 is provided with a positioning cam 14 that can lock the carbon brush holder 10 when rotated and fix the position of the carbon brush 12 mounted on the rotor of the generator. The positioning cam 14 is fixed on the eccentric side of the locking wheel 13 and is located above the carbon brush holder 10.

[0035] The locking wheel 13 is located on the front side of the carbon brush holder 10, which means that the locking wheel 13 is closer to the operating port of the carbon burner 1. Therefore, when the operating port of the carbon burner 1 is opened, during the initial installation of the carbon brush, the operator places the prepared carbon brush 12 from above the carbon brush holder 10 into the carbon brush placement slot 11, and rotates the locking wheel 13 from the outside of the operating port. This causes the locking wheel positioning cam 14 to press against the front end of the carbon brush holder 10. Due to the structure of the positioning cam 14, as shown in the figure... Figure 2 , Figure 4 As shown, the arc shape of the positioning cam 14 extends to the periphery of the locking disc 13. Therefore, when the positioning cam 14 rotates counterclockwise, it can push the carbon brush holder 10 towards the positioning plate 6 by compression. That is, by using this remote pushing method, the carbon brush 12 placed in the carbon brush placement groove 11 is inserted into the rotor sleeve 3 through the positioning hole 7, and the inner end of the carbon brush 12 is quickly assembled (overlapped) onto the generator rotor (on the slip ring on the rotor). Finally, the hatch 2 is closed, and the inner surface of the hatch 2 forms a compression lock on the locking disc 13. The locking disc 13 applies the locking effect to the positioning cam 14. Then, the positioning cam 14 applies a locking effect to the carbon brush holder 10. The length of the carbon brush holder 10 on the positioning guide rail 9 is just enough to allow the inner end of the carbon brush 12 to overlap with the slip ring. Since the outer end of the carbon brush holder 10 is locked through the positioning hole 7, it is equivalent to restricting the outer end of the carbon brush 12 in the positioning plate 6 when the inner end of the carbon brush 12 overlaps with the slip ring, preventing the carbon brush 12 from falling outward when the slip ring rotates with the fan rotor. Therefore, the outer end of the carbon brush 12 does not need to be fixed by screws. When the carbon brush 12 is replaced and maintained, it is easy to remove it directly after the carbon brush holder 10 is reversed.

[0036] During maintenance, in order to allow the carbon brush 12 to move in the opposite direction with the carbon brush holder 10, it can be directly removed from the slip ring. Therefore, as follows: Figure 5 , Figure 6 as well as Figure 7As shown, a guide hole 81 is firstly provided inward from the front end of the guide seat 8, and a movable plate 101 is fixed to the front end of the carbon brush holder 10. Secondly, a guide rod 102 is fixed on the movable plate 101 and slidably fitted in the guide hole 81. Thirdly, a return spring 103 is sleeved on the guide rod 102, with its two ends elastically contacting the movable plate 101 and the guide seat 8 respectively. Therefore, when the carbon brush holder 10 locks the carbon brush 12 into the positioning plate 6, the movable plate 101 will follow the carbon brush holder 10 and move towards the positioning plate 6. At the same time, the guide rod 102 is pressed into the guide hole 81, and the return spring 103 is compressed and shortened and stores elastic force. When the hatch 2 is opened for maintenance of the carbon brush 12, the hatch 2 no longer provides a squeezing and locking force to the locking wheel 13, causing the locking wheel 13 to be in a relative rotation state. At this time, the positioning cam 14 on the locking wheel 13 will no longer lock and restrict the front end of the carbon brush holder 10. At this time, the return spring 103 will quickly release its elastic force and push the moving plate 101 in the opposite direction to move the carbon brush holder 10 toward the front operation port of the carbon fire chamber 1. The carbon brush 12 placed on the carbon brush holder 10 through the carbon brush placement slot 11 will automatically exit forward from the rotor sleeve 3 along the positioning hole 7. The operator only needs to take the carbon brush 12 out of the carbon brush placement slot 11, replace it, and then put the carbon brush 12 back into the rotor sleeve 3 as described in the initial assembly, and make it overlap and position with the slip ring on the rotor inside the rotor sleeve 3.

[0037] like Figures 1 to 7 As shown, in this embodiment, a toothed surface 131 is also provided on the outer circular surface of the locking wheel 13. The hatch 2 is fitted to the front end of the charcoal chamber 1 by sliding up and down. The sliding method between the hatch 2 and the front end of the charcoal chamber 1 is a slide rail fit. The slide rail is a damping slide rail to ensure that the hatch 2 can be fixed in position when it slides to a certain position. The hatch 2 and the front end of the charcoal chamber 1 are fixed by a lock. That is, when the front end of the charcoal chamber 1 is completely covered by the hatch 2, it can prevent theft. At the same time, it also ensures that when the hatch 2 is closed, it can lock and fix the outer end of the locking wheel 13, and the hatch 2 will not automatically slide down and open due to the vibration caused by the rotation of the rotor. This lock and sliding fit method are existing technologies and will not be described in detail.

[0038] In this embodiment, the hatch 2 is able to slide up and down, and a rack 21 is provided on the inner surface of the hatch 2, which is on the same side as the tooth surface 131 and meshes with the tooth surface 131. Since the tooth surface 131 is a structure on the locking wheel 13, the hatch 2 can drive the locking wheel 13 to rotate clockwise or counterclockwise when it is raised or lowered. When the hatch 2 is lowered, the locking wheel 13 rotates clockwise through meshing and drives the positioning cam 14 to separate from the front rounded corner 104 of the carbon brush holder 10. At this time, the front end of the carbon brush holder 10 loses its restrictive function, the return spring 103 releases its elastic force, and the moving plate 101 moves the carbon brush holder 10 towards the front operating port of the carbon fire chamber 1 by pushing forward and in the opposite direction. This causes the carbon brush 12 placed on the carbon brush holder 10 through the carbon brush placement groove 11 to automatically exit forward from the rotor sleeve 3 along the positioning hole 7. Conversely, when the hatch 2 rises, the locking wheel 13 rotates counterclockwise through meshing, causing the positioning cam 14 to press against the front end of the carbon brush holder 10, pushing the carbon brush 12, which has been replaced in the carbon brush placement slot 11, back into the rotor sleeve 3, and positioning the inner end of the carbon brush 12 against the slip ring on the rotor. Therefore, when maintaining the carbon brush 12, apart from reaching into the carbon chamber 1 to retrieve or replace it, other operations only require the operator to push the hatch 2 up and down. Compared to existing technology, replacing the carbon brush 12 of a wind turbine does not require reaching into a confined space to remove the screws on the carbon brush 12, nor does it require reaching into a confined space to remove the screws, thus avoiding inconvenience.

[0039] Since there are two or more carbon brushes 12 on the same wind turbine rotor that work with the slip ring, in order to meet practical use, the end of the slot 5 is arc-shaped, and there are two positioning plates 6, which are symmetrically located on the upper and lower sides of the slot 5. The two positioning plates 6 are provided with symmetrical positioning holes 7. The guide seat 8 is located between the two positioning plates 6. The guide seat 8 is provided with two positioning guide rails 9, which are respectively located on the straight line of the two positioning holes 7. A carbon brush fixing seat 10 is slidably installed on each of the two positioning guide rails 9, which are on the same straight line as the two positioning holes 7. A carbon brush placement groove 11 is provided on each of the two carbon brush fixing seats 10. A carbon brush 12 is placed in each of the two carbon brush placement grooves 11. The carbon brush placement grooves 11 on the two carbon brush fixing seats 10 are opened from the top, so that the carbon brush 12 can be easily removed from the carbon brush placement groove 11 during maintenance or the replaced carbon brush 12 can be easily reinstalled in the carbon brush placement groove 11.

[0040] like Figure 7As shown, the carbon brush placement groove 11 extends downwards from the top of the carbon brush holder 10. The carbon brush placement groove 11 includes a large slot 111 near the positioning hole 7 at one end and a wire groove 112 near the locking wheel 13 at the other end. The wire groove 112 communicates with the large slot 111 and the wire groove 112 from front to back, and the width of the large slot 111 is greater than the width of the wire groove 112. Based on the actual shape of the carbon brush 12, the carbon brush placement groove 11 is structurally designed such that the insertion end of the carbon brush 12 is placed in the large slot 111, and the wire harness end of the carbon brush 12 is placed in the wire groove 112. Since a side slot 113 extends from the wire groove 112 into the inner surface of the carbon brush holder 10, when the wire harness portion of the carbon brush 12 is placed in the wire groove 112, the wiring end (terminal wiring portion) of the wire harness is exposed in the carbon burner chamber 1 through the side slot 113, facilitating connection to the power supply circuit. Simultaneously, the wire harness portion of the carbon brush 12 is... The carbon brush 12 is exposed in the carbon chamber 1 through the side slot 113. The external wire is connected to the wire harness terminal of the carbon brush 12 in the carbon chamber 1 to provide current to the carbon brush 12. This is equivalent to using the wire to form a tension and fixation at the opposite end of the carbon brush 12 away from the slip ring. The path of the wire is fixed to the inner wall of the carbon chamber 1 through the wire buckle, which forms a front end tension on the carbon brush 12. This avoids the carbon brush 12 from having a hard contact with the slip ring and causing hard friction, which would lead to premature wear and failure of the overlapping end of the carbon brush 12 and the slip ring.

[0041] The above orientation references do not represent the specific orientations of each component in this implementation scheme. This implementation scheme is only for the convenience of describing the scheme and to make relative descriptions based on the orientations of the references. In reality, the specific orientations of each component are based on their actual installation and use, as well as the orientation descriptions that are customary to those skilled in the art. This is hereby stated.

[0042] The specific embodiments described above further illustrate the inventive purpose, technical solution, and beneficial effects of the present invention. It should be understood that the above descriptions are merely specific embodiments of the present invention and are not intended to limit the scope of protection of the present invention. In particular, it should be noted that any modifications, equivalent substitutions, or improvements made by those skilled in the art within the spirit and principles of the present invention should be included within the scope of protection of the present invention.

Claims

1. A collector ring carbon brush device for a wind turbine generator, characterized in that, It includes a carbon fire chamber (1), a door (2) that slides on the front side of the carbon fire chamber (1), a rotor sleeve (3) that passes through the carbon fire chamber (1), and a carbon brush assembly mechanism (4) provided on the rotor sleeve (3). The rotor of the wind turbine is installed inside the rotor sleeve (3). The rotor sleeve (3) has a slot (5) facing the cabin door (2). The two ends of the slot (5) are close to the inner walls of the carbon fire chamber (1). The carbon brush assembly mechanism (4) includes a positioning plate (6) fixed to one end of the slot (5). The positioning plate (6) has a positioning hole (7) perpendicular to the outside of the slot (5). The carbon brush assembly mechanism (4) also includes a guide seat (8) fixed to the outer wall of the rotor sleeve (3) and perpendicular to the outside of the positioning plate (6). The guide seat (8) has a positioning guide rail (9) on the same straight line as the positioning hole (7). The carbon brush assembly mechanism (4) also includes a sliding fit on the positioning guide rail (9) and can reciprocate in the straight direction of the positioning hole (7). A movable carbon brush holder (10) is provided with a carbon brush placement groove (11) on the same straight line as the positioning hole (7). A carbon brush (12) is placed in the carbon brush placement groove (11). When the carbon brush (12) moves with the carbon brush holder (10), it can be inserted into the rotor sleeve (3) along the positioning hole (7) and quickly assembled on the rotor of the generator. A locking wheel (13) is also rotatably installed on the inner wall of the carbon fire chamber (1). The locking wheel (13) is on the same side as the carbon brush assembly mechanism (4) and is located in front of the carbon brush holder (10). The locking wheel (13) is provided with a positioning cam (14) that can lock the carbon brush holder (10) when rotating and fix the position of the carbon brush (12) assembled on the rotor of the generator. A guide hole (81) is provided inward from the front end of the guide seat (8). A movable plate (101) is fixed at the front end of the carbon brush fixing seat (10). A guide rod (102) is fixed on the movable plate (101) and slidably fitted in the guide hole (81). A return spring (103) is sleeved on the guide rod (102) with its two ends elastically contacting the movable plate (101) and the guide seat (8) respectively.

2. The wind turbine collector ring carbon brush device according to claim 1, characterized in that, The carbon brush holder (10) has a rounded corner (104) facing the rotation trajectory of the positioning cam (14) at one end near the locking wheel (13).

3. The wind turbine collector ring carbon brush device according to claim 2, characterized in that, The positioning cam (14) is fixed to the eccentric side of the locking wheel (13) and positioned above the carbon brush holder (10).

4. A wind turbine collector ring carbon brush device according to claim 3, characterized in that, The outer surface of the locking wheel (13) is provided with a toothed surface (131). The hatch (2) slides up and down at the front end of the carbon fire chamber (1). The inner surface of the hatch (2) is provided with a rack (21) on the same side as the toothed surface (131). The rack (21) meshes with the toothed surface (131) and can drive the locking wheel (13) to rotate clockwise or counterclockwise when the hatch (2) moves up and down. When the hatch (2) descends, the locking wheel (13) rotates clockwise through meshing and drives the positioning cam (14) to separate from the front end rounded corner (104) of the carbon brush holder (10). When the hatch (2) rises, the locking wheel (13) rotates counterclockwise through meshing and drives the positioning cam (14) to form a compression with the front end of the carbon brush holder (10).

5. A wind turbine collector ring carbon brush device according to claim 4, characterized in that, The end of the slot (5) is arc-shaped. There are two positioning plates (6) symmetrically located on the upper and lower sides of the slot (5). The two positioning plates (6) are provided with symmetrical positioning holes (7). The guide seat (8) is located between the two positioning plates (6). The guide seat (8) is provided with two positioning guide rails (9) located on the upper and lower sides. The two positioning guide rails (9) are respectively located on the straight line of the two positioning holes (7). Each of the two positioning guide rails (9) is slidably installed with a carbon brush fixing seat (10) that is on the same straight line as the two positioning holes (7). The two carbon brush fixing seats (10) are provided with carbon brush placement grooves (11). Each of the two carbon brush placement grooves (11) contains a carbon brush (12).

6. A wind turbine collector ring carbon brush device according to claim 5, characterized in that, The two ends of the movable plate (101) are respectively fixed on the upper and lower carbon brush holders (10), the guide rod (102) is installed in the middle of the movable plate (101), the guide hole (81) is opened in the middle of the guide seat (8), and the guide rod (102) is slidably engaged in the middle of the guide seat (8) within the guide seat (8).

7. A wind turbine collector ring carbon brush device according to claim 6, characterized in that, The carbon brush placement groove (11) is opened downward from the top of the carbon brush holder (10). The carbon brush placement groove (11) includes a large groove (111) with one end close to the positioning hole (7) and a wire groove (112) with the other end close to the locking wheel (13). The wire groove (112) is connected to the large groove (111) and the wire groove (112) from front to back, and the width of the large groove (111) is greater than the width of the wire groove (112).

8. A wind turbine collector ring carbon brush device according to claim 7, characterized in that, A side groove (113) is provided from the wire groove (112) to the inner surface of the carbon brush holder (10).

9. A method of using a wind turbine collector ring carbon brush device, wherein the method is applied to the wind turbine collector ring carbon brush device as described in claim 8, characterized in that... Includes the following steps: Step S1: Prepare the charcoal fire chamber (1), open a track at its front end, and fit the door (2) to the front end of the charcoal fire chamber (1) through the track. At the same time, set a damping strip in the track to ensure that the door (2) can be fixed in position when it slides to a certain position. The door (2) and the front end of the charcoal fire chamber (1) are fixed by a lock. Step S2: When the carbon brush (12) and the slip ring on the wind turbine shaft are assembled for the first time, the carbon brush (12) is placed in the carbon brush placement groove (11), the insertion end of the carbon brush (12) is placed in the large groove (111), the wire harness part of the large groove (111) is placed in the wire groove (112), and the end of the wire harness is bent from the side groove (113) to the inside of the carbon brush fixing seat (10) and connected to the wire. The hatch (2) is raised and slid to close the operating port of the carbon fire chamber (1), and at the same time, the positioning cam (14) is driven to form a squeeze with the front end of the carbon brush fixing seat (10), pushing the insertion end of the carbon brush (12) into the rotor sleeve (3) and docking with the slip ring. Step S3: During the later maintenance of carbon brush (12), the door (2) slides down and opens the carbon fire chamber (1), causing the positioning cam (14) to separate from the front end of the carbon brush holder (10). The carbon brush (12) is pulled out from inside the rotor sleeve (3) under the action of the carbon brush holder (10), and the carbon brush (12) is replaced and maintained.

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