Brake disc for yawing of wind turbine generator

Abstract

The invention relates to the technical field of brake discs, in particular to a brake disc for yaw of a wind turbine generator, which comprises a fixing ring, a brake disc is adaptively mounted on an inner ring of the fixing ring, at least one brake caliper is adaptively mounted on an inner ring of the brake disc, the brake caliper is used for locking or releasing the brake disc, and a brake disc body is jointly composed of a plurality of brake pads. A hole is formed in an inner ring of the brake pad and communicates with a storage pipe, and the storage pipe is located in an inner ring body and used for temporarily storing abraded powder. The brake disc is convenient to maintain and replace subsequently, the replacement time is shortened, and the replacement cost is reduced.

Description

Technical Field

[0001] The invention relates to the technical field of brake discs, and in particular to a brake disc used for yaw of a wind turbine. Background Art

[0002] Wind power generation, as a clean and renewable energy source, has become the direction of world energy development. In the composition of wind turbines, the yaw system of the wind turbine is an important component of the wind turbine. Its function in the wind turbine is to rotate the nacelle so that the wind turbine rotor keeps consistent with the wind direction at all times to ensure that the wind turbine maintains the maximum efficiency of absorbing wind energy.

[0003] The yaw system is composed of a slewing support bearing, a yaw brake disc, a brake caliper and a motor drive transmission mechanism. The yaw brake part of the yaw system generally consists of two parts, one is the motor electromagnetic brake installed at the rear end of the drive motor, and the other is the hydraulic yaw installed near the yaw bearing; when not yawed, the brake caliper and the brake disc are in a locked state, the brake caliper is in a semi-released state when yawed, and the brake caliper is in a fully released state when the cable is automatically untied. Usually, the yaw time set by the system is generally 10-20 minutes. The friction between the brake caliper and the brake disc produces a braking effect. Long-term operation can easily cause wear of the brake disc. When the brake caliper's brake disc is worn out and not replaced in time, it will cause great damage to the wind unit.

[0004] Existing brake discs are generally integral and used in megawatt-class wind turbines. During the friction between brake discs, the brake discs are worn out greatly and need to be replaced and maintained regularly. To replace the integral brake discs, the entire unit needs to be lifted off the wind turbine for replacement, resulting in huge maintenance costs and workload. Due to the large amount of wear on the brake discs, the powder produced by each brake wear is scattered freely, resulting in the need to first remove the powder scattered on the equipment and the powder on the gear oil for each gear maintenance. The powder on the gear oil can only be scraped out as a whole and replaced with new gear oil, resulting in a waste of gear oil and a long maintenance time.

[0005] To this end, the present application provides a brake disc for yaw of a wind turbine to solve the above technical problems. Summary of the invention

[0006] The purpose of the present invention is to provide a brake disc for yaw of a wind turbine, so as to solve the problems that the existing brake disc is an integrated type, which is time-consuming and labor-intensive to replace after wear; and the powder of the worn brake disc is scattered randomly, which increases the maintenance time during regular gear maintenance.

[0007] In order to solve the above technical problems, the present invention provides a brake disc for yaw of a wind turbine, comprising a fixed ring, the inner ring of the fixed ring is adapted to install the brake disc, the inner ring of the brake disc is adapted to install at least one brake caliper, the brake caliper is used to lock or release the brake disc, the brake disc body is composed of a plurality of brake pads, the inner ring of the brake pad is provided with a hole, the hole is connected to a storage tube, the storage tube is located inside the inner ring body and is used to cache worn powder.

[0008] Furthermore, the brake pad body is composed of an outer ring and an inner ring, and a plurality of bolt holes are arranged through the outer ring, and the bolt holes are adapted to the fixing holes.

[0009] Furthermore, a plurality of fixing holes are provided through the fixing ring body, and the fixing holes are perpendicular to the bolt holes.

[0010] Furthermore, at least one hole is arranged on both sides of the inner ring body, and the top edge of the hole body is inclined inward; a storage tube is arranged in the inner ring body, and the storage tube body is connected to the holes arranged on both sides of the inner ring body, and the hole is arranged perpendicular to the outer ring and is in the shape of a capsule.

[0011] Furthermore, the brake disc body comprises a brake pad, a brake pad A, a brake pad B and a brake pad C, wherein the brake pad, the brake pad A, the brake pad B and the brake pad C are connected end to end to form a circular brake disc.

[0012] Furthermore, the outer rings of the brake pad, brake pad A, brake pad B and brake pad C bodies can be adapted to be embedded and installed in the groove, and the groove is located on the inner ring surface of the fixing ring body.

[0013] Furthermore, the fixing hole on the fixing ring body is vertically adapted to the bolt hole, so that the bolt passes through the fixing hole and the bolt hole at the same time.

[0014] Furthermore, there are at least two bolt holes on the outer ring of the brake pad, brake pad A, brake pad B and brake pad C body.

[0015] Furthermore, the storage tube is a curved structure, which increases the wear resistance of the inner ring.

[0016] Furthermore, the holes are arranged on both surfaces of the inner ring body, and the holes are arranged on the two surfaces in a staggered manner.

[0017] By adopting the above technical solution, the present invention has the following beneficial effects:

[0018] 1. The present invention provides a brake disc for yaw of a wind turbine, which has four small brake pads which together form the entire annular brake disc, and the four small brake pads are respectively adapted to be embedded in the grooves in the fixing ring, so as to increase the firmness of the brake pad and reduce the swinging of the brake pad; two bolt holes are arranged on each brake pad, and the bolt holes correspond to and are vertically adapted to the fixing holes on the fixing ring, and the fixing holes and the bolt holes are penetrated by bolts to fix the two together, so as to further enhance the firmness of the brake pad; at the same time, the four small brake pads are convenient for subsequent maintenance and replacement, thus reducing the replacement time and reducing the replacement cost.

[0019] 2. The present invention provides a brake disc for yaw of a wind turbine. The brake disc body is divided into an outer ring and an inner ring. The outer ring and the inner ring are integrally formed. Bolt holes are arranged on the outer ring. The bolt holes are embedded in the groove in the fixing ring along with the outer ring. The fixing holes and the bolt holes in the groove are perpendicular and fit each other, thereby firmly fixing the entire brake pad. A hole is arranged in the inner ring of the brake pad perpendicular to the outer ring. The hole is in the shape of a capsule. The inner ring body is adapted to install a brake caliper. Powder produced by the brake caliper and the brake pad grinder is collected and cached in a storage tube. The storage tube is located in the inner ring body. The storage tube is bent in the inner ring. The bent storage tube increases the supporting strength of the storage tube. When the brake caliper and the brake pad generate friction, the friction powder will bring the powder into the hole as the brake caliper rotates, so that the powder is cached in the storage tube, thereby reducing the random scattering of powder and reducing the duration of regular maintenance. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] In order to more clearly illustrate the specific implementation methods of the present invention or the technical solutions in the prior art, the drawings required for use in the specific implementation methods or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are some implementation methods of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0021] Figure 1 The figure is a schematic diagram of the overall structure of a brake disc used for yaw of a wind turbine;

[0022] Figure 2 is a schematic diagram of the structure of the fixed ring;

[0023] Figure 3 It is a schematic diagram of the forward section structure of the fixing ring;

[0024] Figure 4 A schematic diagram of the structure of a brake disc assembled from a brake pad;

[0025] Figure 5 is a schematic diagram of the structure of the brake pad;

[0026] Figure 6It is a schematic diagram of the structure of the outer ring and the inner ring;

[0027] Figure 7 Schematic diagram of the structure of the hole and storage tube.

[0028] Figure numerals: 1, fixing ring; 2, brake caliper; 3, brake disc; 4, fixing hole; 5, groove; 31, brake pad; 32, brake pad A; 33, brake pad B; 34, brake pad C; 311, bolt hole; 312, outer ring; 313, inner ring; 315, hole; 316, storage tube. DETAILED DESCRIPTION

[0029] The technical solution of the present invention will be described clearly and completely below in conjunction with the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0030] In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc., indicating the orientation or positional relationship, are based on the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as limiting the present invention. In addition, the terms "first", "second", and "third" are used for descriptive purposes only, and cannot be understood as indicating or implying relative importance.

[0031] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "connected", and "connected" should be understood in a broad sense, for example, it 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 it can be indirectly connected through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0032] The present invention is further explained below in conjunction with specific implementation modes.

[0033] like Figure 1-7As shown, the present embodiment provides a brake disc for yaw of a wind turbine, comprising a fixing ring 1, the inner ring of the fixing ring 1 is adapted to install a brake disc 3, the inner ring of the brake disc 3 is adapted to install at least one brake caliper 2, the brake caliper 2 is used to lock or release the brake disc 3, the brake disc 3 body is composed of a plurality of brake pads 31, a hole 315 is arranged on the inner ring 313 of the brake pad 31, the hole 315 is connected to a storage tube 316, the storage tube 316 is located inside the inner ring 313 body for caching wear powder; the brake pad 31 body is composed of an outer ring 312 and an inner ring 313, the outer ring 312 is penetrated by a plurality of bolt holes 311, and the bolt holes 311 are adapted to the fixing holes 4; A plurality of fixing holes 4 are arranged through the fixing ring 1 body, and the fixing holes 4 are perpendicular to the bolt holes 311; the fixing holes 4 on the fixing ring 1 body are perpendicularly adapted to the bolt holes 311, so that the bolts can simultaneously pass through the fixing holes 4 and the bolt holes 311; at least one hole 315 is arranged on both sides of the inner ring 313 body, and the edge of the top surface of the hole 315 body is inclined inward; a storage tube 316 is arranged in the inner ring 313 body, and the storage tube 316 body is connected to the holes 315 arranged on both sides of the inner ring 313 body, and the holes 315 are arranged perpendicular to the outer ring 312 and are in the shape of a capsule; the holes 315 are arranged on both surfaces of the inner ring 313 body, and the holes 315 are arranged on both surfaces in a staggered manner. Specifically, a groove 5 is provided on the inner surface of the fixing ring 1, and a brake disc is embedded in the groove 5. The brake disc has four identical brake pads 31, brake pad A32, brake pad B33 and brake pad C34 connected end to end to form a brake disc 4. The brake pads 31, brake pads A32, brake pads B33 and brake pads C34 have the same size and structure. The brake pad 31 body is divided into an outer ring and an inner ring. Two bolt holes 311 are provided on the outer ring. The outer ring is adapted to be embedded in the groove 5. Since a plurality of fixing holes 4 are provided through the fixing ring, the fixing holes 4 are adapted to and perpendicular to the bolt holes 311, and the bolt diameter passes through the fixing holes 4 and the bolt holes 311. The brake pad 31 is fixed, and the brake pad is double fixed, which enhances the firmness of the brake pad and reduces the swing of the brake pad; a hole 315 is respectively arranged on the upper surface and the lower surface of the inner ring 313 of the brake pad 31 body, and the holes 315 on the upper surface and the lower surface of the inner ring 313 are mutually staggered. The hole 315 is a capsule shape, which is conducive to bringing in powder and increasing the powder collection efficiency. The top surface of the hole 315 is provided with an inner inclined surface to reduce the resistance generated by the brake caliper 2 and the hole 315 when rotating; the hole 315 is connected to the storage tube 316, and the storage tube 316 is located in the inner ring 313 body and is used to cache the powder worn by the brake disc and the brake caliper.

[0034] like Figure 2-7As shown, in this embodiment, the brake disc 3 body has a brake pad 31, a brake pad A32, a brake pad B33 and a brake pad C34, and the brake pad 31, the brake pad A32, the brake pad B33 and the brake pad C34 are connected end to end to form a circular brake disc 3; the outer ring 312 of the brake pad 31, the brake pad A32, the brake pad B33 and the brake pad C34 body can be adapted to be embedded and installed in the groove 5, and the groove 5 is located on the inner ring surface of the fixing ring 1 body; the bolt holes 311 on the outer ring 312 of the brake pad 31, the brake pad A32, the brake pad B33 and the brake pad C34 body are at least 2. Specifically, the brake disc 3 has a brake pad 31 , brake pad A32, brake pad B33 and brake pad C34 are connected end to end to form a total of four brake pads, which are convenient for subsequent maintenance and replacement. Compared with the traditional brake disc replacement, the replacement time and replacement cost are greatly reduced; the brake pad 31 body is divided into an outer ring 312 and an inner ring 313, the outer ring 312 and the inner ring 313 are integrally formed, and a bolt hole 311 is arranged on the outer ring 312. The outer ring is adapted to be embedded in the groove 5 of the fixing ring body, and the brake pad 31 is fixed by directly penetrating the fixing hole 4 and the bolt hole 311 with bolts. The brake pad 31 adopts double fixation, which enhances the firmness of the brake pad and facilitates the subsequent maintenance and replacement of the brake pad.

[0035] like Figure 6-7 As shown, in this embodiment, the storage tube 316 is a curved structure, which increases the wear resistance of the inner ring 313; specifically, a curved storage tube 316 is arranged in the inner ring 313 of the brake pad 31, and the storage tube 316 is connected to the holes 315 arranged on the upper surface and the lower surface of the inner ring. When the brake caliper 2 and the brake pad 31 generate friction, the friction powder is brought into the hole 315 by the brake caliper, and the powder brought into the hole 315 is caused to flow into the storage tube 316 by the rotation of the brake pad 31. The storage tube 316 is a curved structure, and the curved storage tube 316 increases the supporting strength of the storage tube 316. Due to the curved characteristics, compared with the setting of a curve or a straight line, the curved structure enhances the dual strength of the inner ring 313 and the storage tube 316; when the brake caliper 2 and the brake pad 31 generate friction, the friction powder will bring the powder into the hole as the brake caliper rotates, so that the powder is cached in the storage tube, thereby reducing the random scattering of powder and reducing the duration of regular maintenance.

[0036] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit it. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or replace some or all of the technical features therein by equivalents. However, these modifications or replacements do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of the present invention.

Claims

1. A brake disc for yaw of a wind turbine, characterized in that: The invention comprises a fixing ring (1), wherein the inner ring of the fixing ring (1) is adapted to be installed with a brake disc (3), wherein the inner ring of the brake disc (3) is adapted to be installed with at least one brake caliper (2), wherein the brake caliper (2) is used to lock or release the brake disc (3), wherein the brake disc (3) body is composed of a plurality of brake pads (31), wherein a hole (315) is arranged on the inner ring (313) of the brake pad (31), wherein the hole (315) is connected to a storage tube (316), and the storage tube (316) is located inside the inner ring (313) body and is used to buffer wear powder.

2. A brake disc for yaw of a wind turbine according to claim 1, characterized in that: The brake pad (31) body is composed of an outer ring (312) and an inner ring (313). The outer ring (312) is penetrated by a plurality of bolt holes (311), and the bolt holes (311) are adapted to the fixing holes (4).

3. A brake disc for wind turbine yaw according to claim 1, characterized in that: A plurality of fixing holes (4) are provided through the fixing ring (1) body, and the fixing holes (4) are perpendicular to the bolt holes (311).

4. A brake disc for yaw of a wind turbine according to claim 2, characterized in that: At least one hole (315) is arranged on both sides of the inner ring (313) body, and the top edge of the hole (315) body is inclined inwards; a storage tube (316) is arranged in the inner ring (313) body, and the storage tube (316) body is connected to the holes (315) arranged on both sides of the inner ring (313) body, and the hole (315) is arranged perpendicular to the outer ring (312) and is in the shape of a capsule.

5. A brake disc for yaw of a wind turbine according to claim 1, characterized in that: The brake disc (3) body comprises a brake pad (31), a brake pad A (32), a brake pad B (33) and a brake pad C (34), wherein the brake pad (31), the brake pad A (32), the brake pad B (33) and the brake pad C (34) are connected end to end to form a circular brake disc (3).

6. A brake disc for yaw of a wind turbine according to claim 5, characterized in that: The outer rings (312) of the brake pads (31), brake pads A (32), brake pads B (33) and brake pads C (34) can be adapted to be embedded and installed in the grooves (5), and the grooves (5) are located on the inner ring surface of the fixing ring (1) body.

7. A brake disc for yaw of a wind turbine according to claim 1, characterized in that: The fixing hole (4) on the fixing ring (1) body is vertically adapted to the bolt hole (311), so that the bolt can penetrate the fixing hole (4) and the bolt hole (311) at the same time.

8. A brake disc for yaw of a wind turbine according to claim 6, characterized in that: The number of bolt holes (311) on the outer ring (312) of the brake pad (31), brake pad A (32), brake pad B (33) and brake pad C (34) is at least two.

9. A brake disc for yaw of a wind turbine according to claim 4, characterized in that: The storage tube (316) is a curved structure, which increases the wear resistance of the inner ring (313).

10. A brake disc for yaw of a wind turbine according to claim 4, characterized in that: Holes (315) are arranged on both surfaces of the inner ring (313) body, and the holes (315) are arranged on both surfaces in a staggered manner.

Images