Braking device for wind power generation set

Abstract

The utility model provides a brake device for a wind power generation set. The brake device comprises a gear transmission box, a driving shaft is fixedly connected to one side of the gear transmission box, a driving disc is fixedly connected to the surface of the driving shaft, and a brake disc is fixedly connected to one side of the driving disc through a bolt; the braking device comprises a U-shaped frame, sliding columns are fixedly connected to the two ends of an inner cavity of the U-shaped frame correspondingly, a first braking assembly and a second braking assembly are slidably connected to the surfaces of the sliding columns correspondingly, and a transmission assembly is installed on one side of the wall of the inner cavity of the U-shaped frame. And one side of the transmission assembly is connected with the first braking assembly and the second braking assembly, the top face of the U-shaped frame is fixedly connected with a bent plate, and one side of the bent plate is fixedly connected with a driving telescopic rod. Through mutual cooperation of the gear transmission box, the driving shaft, the driving disc, the brake disc and the brake device, the brake disc can be clamped and fixed when working is not needed.

Description

Technical Field

[0001] This utility model relates to the field of braking technology for wind power generator sets, and specifically to a braking device for wind power generator sets. Background Technology

[0002] As a crucial renewable energy source, the operational safety and reliability of wind turbine generators directly impact the stability of the entire power generation system. The braking system, a key safety component of wind turbine generators, is primarily used to achieve rapid braking and shutdown of the unit in cases of overspeed operation or emergency failure. The yaw brake, in particular, achieves its braking function through the contact friction between the friction pads and the brake disc, and its performance directly affects the safe lifespan of the unit.

[0003] Currently, traditional wind turbine braking systems generally use brake pads with a single coefficient of friction. This structure has the following technical drawbacks during long-term use: due to the continuous contact and friction between the brake disc and the friction pads, the friction material gradually wears down and thins as the unit operates, leading to an increase in the braking clearance. At this point, the friction pads need to be replaced. However, since the material in the friction pads is not completely depleted, replacing them at this stage not only wastes material but also significantly increases maintenance costs.

[0004] To address the aforementioned problems, existing technologies have proposed improved solutions. For example, Chinese patent CN205533905U discloses a dual-brake system employing a combination design of a first yaw brake, a second yaw brake, and a hydraulic cylinder. This avoids the need to disassemble and replace the friction pads before they are completely depleted. However, practical application verification has shown that this solution still has the following technical limitations.

[0005] 1. Because the friction pads and brakes are integrated, the entire brake needs to be replaced when the friction material is completely worn, which fails to fundamentally solve the problem of high maintenance costs.

[0006] 2. Because the replacement operation requires disassembling the entire brake assembly, involving complex procedures such as disconnecting and resealing hydraulic lines, the average replacement time is as long as 4-6 hours, which seriously affects the availability of the unit. Utility Model Content

[0007] To address the shortcomings of existing technologies, this utility model provides a braking device for wind power generators, solving the problems mentioned in the background art.

[0008] To achieve the above objectives, this utility model provides the following technical solution:

[0009] A braking device for a wind turbine generator includes a gear transmission box; a drive shaft is fixedly connected to one side of the gear transmission box, a drive disc is fixedly connected to the surface of the drive shaft, a brake disc is fixedly connected to one side of the drive disc by bolts, and a braking device is mounted on the surface of the brake disc; the braking device includes a U-shaped frame, sliding columns are fixedly connected to both ends of the inner cavity of the U-shaped frame, a first braking assembly and a second braking assembly are slidably connected to the surfaces of the sliding columns, a transmission assembly is mounted on one side of the inner wall of the U-shaped frame, one side of the transmission assembly is connected to the first braking assembly and the second braking assembly, a bent plate is fixedly connected to the top surface of the U-shaped frame, a drive telescopic rod is fixedly connected to one side of the bent plate, and one end of the drive telescopic rod is connected to the first braking assembly.

[0010] Furthermore, the first braking assembly includes a movable plate, the movable plate is slidably connected to the surface of the sliding column, the movable plate is fixedly connected to the output end of the drive telescopic rod, a damping rod is fixedly connected to one side of the movable plate, a braking component is connected to one side of the damping rod, and release components are respectively installed at both ends inside the movable plate.

[0011] Furthermore, the braking component includes a mounting plate and a brake pad. The mounting plate is slidably connected to the surface of the sliding column. One end of the damping rod is fixedly connected to the mounting plate. An arc-shaped stop block is fixedly connected to one side of the mounting plate. A T-slot is provided on one side of the mounting plate. A T-block is fixedly connected to one side of the brake pad. The T-block is slidably connected to the T-slot. The brake pad is fixedly connected to one side of the mounting plate by bolts.

[0012] Furthermore, the braking component also includes rectangular holes, and rectangular holes are respectively provided at both ends of one side of the mounting plate. The mounting plate is connected to the release component through the rectangular holes.

[0013] Furthermore, the release component includes a screw and a transmission rod. The two ends of the inner cavity of the moving plate are rotatably connected to the screw. A hook rod is threaded onto the surface of the screw. The hook rod is slidably connected within the rectangular hole. One end of the screw has a spline hole, and a spline rod is slidably connected within the spline hole. One end of the spline rod is fixedly connected to a rotating rod. The inner wall of the U-shaped frame is rotatably connected to a rotating rod and a transmission rod. Both ends of the transmission rod are rotatably connected to the rotating rod via a worm gear and worm wheel. The second braking assembly adopts the same structure as the first braking assembly, and the second braking assembly is symmetrically installed with the first braking assembly.

[0014] Furthermore, the transmission assembly includes a first sprocket and a second sprocket. The first sprocket and the second sprocket are rotatably connected to both ends of the inner wall of the U-shaped frame, respectively. The surface of the first sprocket is rotatably connected to the second sprocket via a transmission chain. One side of the chain is connected to the first braking assembly and the second braking assembly, respectively. An extension shaft is fixedly connected to one side of the first sprocket and the second sprocket, respectively. The extension shaft is rotatably connected to a transmission rod via a worm gear and a worm wheel.

[0015] This invention provides a braking device for wind turbine generators. Compared with the prior art, it has the following advantages:

[0016] 1. Braking of the brake disc can be achieved through the cooperation of the first braking assembly, the second braking assembly, the drive telescopic rod, and the transmission assembly;

[0017] 2. The T-slots, T-blocks and bolts in the braking components facilitate quick replacement of brake pads later.

[0018] 3. By using the release component, the brake pads can be in two states when the brake disc is in operation or when it needs to be stopped: 1. When the brake disc needs to be braked, the release component will release the damping rod, which will squeeze the brake pads to compensate for the wear of the brake disc and achieve better braking; 2. When the brake disc does not need to be braked, the damping rod will be squeezed, causing the damping rod to contract and store potential energy.

[0019] 4. When the drive telescopic rod moves the first braking component closer to the brake disc, the transmission component will also move the second braking component closer to the brake disc. The cooperation between the first and second braking components will achieve clamping and braking of the brake disc. When the transmission component is working, it will also release the potential energy stored in the first and second braking components, which will improve the braking effect and compensate for the gaps caused by the wear of the brake pads. Attached Figure Description

[0020] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0021] Figure 1 A schematic diagram of the overall structure of this utility model is shown;

[0022] Figure 2 A schematic diagram of the braking device of this utility model is shown;

[0023] Figure 3 A schematic diagram of the transmission assembly structure of this utility model is shown;

[0024] Figure 4 A schematic diagram of the structure of the first braking component of this utility model is shown;

[0025] Figure 5 A schematic diagram of the disassembled structure of the braking component of this utility model is shown;

[0026] Figure 6 This diagram shows a schematic representation of the braking component of the present invention from another perspective.

[0027] Figure 7 A schematic diagram of the release component structure of this utility model is shown;

[0028] The figure shows: 1. Gearbox; 2. Drive shaft; 3. Drive disc; 4. Brake disc; 5. Braking device; 51. U-shaped frame; 52. Sliding column; 53. First braking assembly; 531. Moving plate; 532. Damping rod; 533. Braking component; 5331. Mounting plate; 5332. Brake pad; 5333. Arc-shaped stop; 5334. T-slot; 5335. T-block; 5336. Rectangular hole; 534. Release component; 5341. Screw; 5342. Transmission rod; 5343. Hook rod; 5344. Spline hole; 5345. Spline rod; 5346. Rotating rod; 54. Second braking assembly; 55. Transmission assembly; 551. First sprocket; 552. Second sprocket; 553. Chain; 554. Extension shaft; 56. Bend plate; 57. Drive telescopic rod. Detailed Implementation

[0029] To make the objectives, technical solutions, and advantages of the embodiments of this utility model clearer, the technical solutions in the embodiments of this utility model are described clearly and completely. Obviously, the described embodiments are only some embodiments of this utility model, not all embodiments. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the protection scope of this utility model.

[0030] Example 1

[0031] To address the technical problems in the background section, the following braking device for wind power generators is provided:

[0032] Combination Figures 1-7As shown, the present invention provides a braking device for a wind power generator, including a gear transmission box 1; a drive shaft 2 is fixedly connected to one side of the gear transmission box 1, a drive disc 3 is fixedly connected to the surface of the drive shaft 2, a brake disc 4 is fixedly connected to one side of the drive disc 3 by bolts, and a braking device 5 is installed on the surface of the brake disc 4; the braking device 5 includes a U-shaped frame 51, sliding columns 52 are fixedly connected to both ends of the inner cavity of the U-shaped frame 51, a first braking assembly 53 and a second braking assembly 54 are slidably connected to the surface of the sliding columns 52, a transmission assembly 55 is installed on one side of the inner wall of the U-shaped frame 51, one side of the transmission assembly 55 is connected to the first braking assembly 53 and the second braking assembly 54 respectively, a bending plate 56 is fixedly connected to the top surface of the U-shaped frame 51, a drive telescopic rod 57 is fixedly connected to one side of the bending plate 56, and one end of the drive telescopic rod 57 is connected to the first braking assembly 53. The first braking assembly 53 includes a movable plate 531, the movable plate 531 is slidably connected to the surface of the sliding column 52, the output end of the drive telescopic rod 57 is fixedly connected to the movable plate 531, a damping rod 532 is fixedly connected to one side of the movable plate 531, a braking component 533 is connected to one side of the damping rod 532, and release components 534 are respectively installed at both ends inside the movable plate 531.

[0033] The braking of the brake disc 4 can be achieved through the cooperation of the first braking assembly 53, the second braking assembly 54, the drive telescopic rod 57 and the transmission assembly 55.

[0034] In this embodiment, the braking component 533 includes a mounting plate 5331 and a brake pad 5332. The mounting plate 5331 is slidably connected to the surface of the sliding column 52. One end of the damping rod 532 is fixedly connected to the mounting plate 5331. An arc-shaped stop block 5333 is fixedly connected to one side of the mounting plate 5331. A T-slot 5334 is provided on one side of the mounting plate 5331. A T-block 5335 is fixedly connected to one side of the brake pad 5332. The T-block 5335 is slidably connected to the T-slot 5334. The brake pad 5332 is fixedly connected to one side of the mounting plate 5331 by bolts. The braking component 533 also includes a rectangular hole 5336. Rectangular holes 5336 are respectively provided at both ends of one side of the mounting plate 5331. The mounting plate 5331 is connected to the release component 534 through the rectangular holes 5336.

[0035] The brake pads 5332 can be quickly replaced later by the cooperation of the T-slots 5334, T-blocks 5335 and bolts in the brake component 533.

[0036] Example 2

[0037] like Figures 1-7 As shown, based on the above embodiments, this embodiment further provides the following:

[0038] The release component 534 includes a screw 5341 and a transmission rod 5342. The two ends of the inner cavity of the moving plate 531 are rotatably connected to the screw 5341. The surface of the screw 5341 is threaded with a hook rod 5343. The hook rod 5343 is slidably connected in the rectangular hole 5336. One end of the screw 5341 is provided with a spline hole 5344. A spline rod 5345 is slidably connected in the spline hole 5344. One end of the spline rod 5345 is fixedly connected to a rotating rod 5346. The inner wall of the U-shaped frame 51 is rotatably connected to the rotating rod 5346 and the transmission rod 5342. The two ends of the transmission rod 5342 are rotatably connected to the rotating rod 5346 through a worm gear and a worm wheel. The second braking component 54 adopts the same structure as the first braking component 53, and the second braking component 54 is symmetrically installed with the first braking component 53.

[0039] By releasing component 534, the brake disc 4 can be in two states when it is working or when it needs to be stopped: 1. When the brake disc 4 needs to be braked, the release component 534 will release the damping rod 532, so that the damping rod 532 will squeeze the brake pad 5332, thereby compensating for the wear of the brake disc 4 and achieving better braking; 2. When the brake disc 4 does not need to be braked, the damping rod 532 will be squeezed, causing the damping rod 532 to contract and store potential energy.

[0040] Example 3

[0041] like Figures 1-7 As shown, based on the above embodiments, this embodiment further provides the following:

[0042] The transmission assembly 55 includes a first sprocket 551 and a second sprocket 552. The first sprocket 551 and the second sprocket 552 are rotatably connected to both ends of the inner wall of the U-shaped frame 51, respectively. The surface of the first sprocket 551 is rotatably connected to the second sprocket 552 through a transmission chain 553. One side of the chain 553 is connected to the first braking assembly 53 and the second braking assembly 54, respectively. An extension shaft 554 is fixedly connected to one side of the first sprocket 551 and the second sprocket 552, respectively. The extension shaft 554 is rotatably connected to the transmission rod 5342 through a worm gear and worm wheel.

[0043] When the telescopic rod 57 drives the first braking assembly 53 to move closer to the brake disc 4, the transmission assembly 55 also causes the second braking assembly 54 to move closer to the brake disc 4. Thus, the cooperation between the first braking assembly 53 and the second braking assembly 54 achieves clamping and braking of the brake disc 4. When the transmission assembly 55 is working, it also releases the potential energy stored in the first braking assembly 53 and the second braking assembly 54, which will improve the braking effect and compensate for the gaps caused by the worn brake pads 5332.

[0044] Working principle and usage process of this utility model:

[0045] In use:

[0046] In use, firstly, activate the drive telescopic rod 57. When the drive telescopic rod 57 is working, it will move the moving plate 531. When the moving plate 531 moves, it will move the damping rod 532, the braking component 533, the screw 5341, and the hook rod 5343. When the screw 5341 moves, the spline rod 4345 will slide within the screw 5341. Note that the damping rod 532 is in a compressed state at this time. When the moving plate 531 in the first braking assembly 53 moves, it will move the chain 553. When the chain 553 moves, it will move the moving plate 531 in the second braking assembly 54, and at the same time, it will move the corresponding structure, so that the brake pads 5332 in the first braking assembly 53 and the second braking assembly 54 are closer to the brake disc 4. When the chain 553 moves, it will also move the first sprocket 5. The rotation of the first sprocket 551 and the second sprocket 552 will drive the extension shaft 554 to rotate. When the extension shaft 554 rotates, it will drive the transmission rod 5342 to rotate under the action of the worm and worm wheel. When the transmission rod 5342 rotates, it will drive the rotating rod 5346 to rotate. When the rotating rod 5346 rotates, it will drive the spline rod 5345 and the screw 5341 to rotate. When the screw 5341 rotates, it will drive the hook rod 5343 to move forward. At this time, the damping rod 532 extends forward and squeezes the brake pad 5332, so that the brake pad 5332 contacts the brake disc 4 more quickly, thereby achieving braking and compensating for the wear of the brake pad 5332, avoiding the gap between the brake pad 5332 and the brake disc 4. Conversely, the brake pad 532 moves to both sides, and at the same time, the damping rod 532 is contracted to store potential energy.

[0047] When replacing brake pad 5332, first remove the bolts connecting brake pad 5332 and mounting plate 5531. After removal, pull brake pad 5332 outward so that T-block 5335 can be pulled out of T-slot 5334, which will facilitate the replacement of brake pad 5332 later.

[0048] It should be noted that, in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a process, method, article, or apparatus. Without further limitations, an element defined by the phrase "comprising one..." does not exclude the presence of other identical elements in the process, method, article, or apparatus that includes said element.

[0049] The above embodiments are only used to illustrate the technical solutions of this utility model, and are not intended to limit it. Although this utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some of the technical features. Such modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the spirit and scope of the technical solutions of the embodiments of this utility model.

Claims

1. A braking device for wind power generators, characterized in that: It includes a gear transmission box (1); a drive shaft (2) is fixedly connected to one side of the gear transmission box (1), a drive disc (3) is fixedly connected to the surface of the drive shaft (2), a brake disc (4) is fixedly connected to one side of the drive disc (3) by bolts, and a braking device (5) is installed on the surface of the brake disc (4). The braking device (5) includes a U-shaped frame (51), with sliding columns (52) fixedly connected to both ends of the inner cavity of the U-shaped frame (51). A first braking assembly (53) and a second braking assembly (54) are slidably connected to the surfaces of the sliding columns (52). A transmission assembly (55) is installed on one side of the inner wall of the U-shaped frame (51). One side of the transmission assembly (55) is connected to the first braking assembly (53) and the second braking assembly (54). A bent plate (56) is fixedly connected to the top surface of the U-shaped frame (51). A drive telescopic rod (57) is fixedly connected to one side of the bent plate (56). One end of the drive telescopic rod (57) is connected to the first braking assembly (53).

2. A braking device for a wind power generator according to claim 1, characterized in that: The first braking assembly (53) includes a movable plate (531), the movable plate (531) is slidably connected to the surface of the sliding column (52), the output end of the drive telescopic rod (57) is fixedly connected to the movable plate (531), a damping rod (532) is fixedly connected to one side of the movable plate (531), a braking component (533) is connected to one side of the damping rod (532), and release components (534) are respectively installed at both ends inside the movable plate (531).

3. A braking device for a wind power generator according to claim 2, characterized in that: The braking component (533) includes a mounting plate (5331) and a brake pad (5332). The mounting plate (5331) is slidably connected to the surface of the sliding column (52). One end of the damping rod (532) is fixedly connected to the mounting plate (5331). An arc-shaped stop block (5333) is fixedly connected to one side of the mounting plate (5331). A T-slot (5334) is provided on one side of the mounting plate (5331). A T-block (5335) is fixedly connected to one side of the brake pad (5332). The T-block (5335) is slidably connected to the T-slot (5334). The brake pad (5332) is fixedly connected to one side of the mounting plate (5331) by bolts.

4. A braking device for a wind power generator according to claim 3, characterized in that: The braking component (533) also includes a rectangular hole (5336). The mounting plate (5331) has rectangular holes (5336) at both ends on one side. The mounting plate (5331) is connected to the release component (534) through the rectangular holes (5336).

5. A braking device for a wind power generator according to claim 4, characterized in that: The release component (534) includes a screw (5341) and a transmission rod (5342). The two ends of the inner cavity of the moving plate (531) are rotatably connected to the screw (5341). A hook rod (5343) is threaded onto the surface of the screw (5341). The hook rod (5343) is slidably connected within the rectangular hole (5336). One end of the screw (5341) is provided with a spline hole (5344), and a spline rod (5342) is slidably connected within the spline hole (5344). 5) One end of the spline rod (5345) is fixedly connected to a rotating rod (5346). The inner wall of the U-shaped frame (51) is rotatably connected to the rotating rod (5346) and the transmission rod (5342). The two ends of the transmission rod (5342) are rotatably connected to the rotating rod (5346) through a worm gear and a worm wheel. The second braking assembly (54) adopts the same structure as the first braking assembly (53), and the second braking assembly (54) and the first braking assembly (53) are symmetrically installed.

6. A braking device for a wind power generator according to claim 5, characterized in that: The transmission assembly (55) includes a first sprocket (551) and a second sprocket (552). The first sprocket (551) and the second sprocket (552) are rotatably connected to both ends of the inner wall of the U-shaped frame (51). The surface of the first sprocket (551) is rotatably connected to the second sprocket (552) through a transmission chain (553). One side of the chain (553) is connected to the first braking assembly (53) and the second braking assembly (54) respectively. An extension shaft (554) is fixedly connected to one side of the first sprocket (551) and the second sprocket (552). The extension shaft (554) is rotatably connected to a transmission rod (5342) through a worm gear and a worm wheel.

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