Brake device of wind driven generator

Abstract

The utility model discloses a braking device of a wind driven generator, which comprises a case with two sides fixedly connected with shaft sleeves, a rotating shaft is rotatably inserted in the shaft sleeves, the end part of the rotating shaft is fixedly connected with fan blades, a braking mechanism is fixed at the top in the case through bolts, and the front surface of the braking mechanism is rotatably connected with an auxiliary braking component. A hydraulic cylinder is fixedly connected to the outer wall of the top of the machine box, the output end of the hydraulic cylinder is connected with the driving end of the braking mechanism, the braking mechanism comprises a connecting shaft, a front plate, a guide connecting plate, a fixing part, a rear plate, a braking ring, a first guide hole, a limiting strip, a second guide hole, a rotating shaft, a guide shaft, a U-shaped plate, a connecting plate, a sector tooth and a rack plate, and the fixing part is fixedly connected to the inner wall of the top of the machine box. According to the utility model, the effective braking of the rotating shaft of the fan blade is promoted, the braking efficiency and quality are improved, the problems of inconvenient installation and low maintenance efficiency of the braking device in the prior art are solved, and the loading and unloading efficiency of the braking mechanism is improved.

Description

Technical Field

[0001] This utility model relates to the field of braking technology, and in particular to a braking device for a wind turbine. Background Technology

[0002] Wind turbines, as a crucial component of renewable energy, have been widely adopted in recent years. With the continuous development of wind power technology, the scale and power of wind turbines have also been increasing. Against this backdrop, the safety and reliability of wind turbines are particularly important, and the braking system, as a key component, plays a vital role. The braking system of a wind turbine is primarily used to control the turbine's operating status in strong winds or malfunctions to avoid damage to the equipment and the surrounding environment. During wind turbine operation, the braking system not only needs to function effectively in extreme weather conditions but also must ensure the equipment remains stationary during routine maintenance and repairs. Therefore, the design and reliability of the braking system directly affect the overall safety and power generation efficiency of the wind turbine.

[0003] A search revealed a Chinese patent publication number CN219795446U, which discloses a braking device for a wind turbine. The device includes a drive motor mounted on a housing base, a fan blade rotating shaft rotatably connected to the housing base, two sets of wear-resistant sleeves spaced apart on the fan blade rotating shaft, and is driven by the drive motor. Two sets of support plates are fixedly connected to the housing base at intervals, each support plate having a sliding groove. Two sets of movable plates are slidably connected within the sliding grooves, and are driven by a power device. Two sets of damping rods are fixedly connected to the two movable plates at intervals, and brake plates corresponding to the wear-resistant sleeves are fixedly connected to the extended ends of the damping rods. A buffer spring is provided between the brake plate and the movable plate. The aforementioned braking device for a wind turbine has the following shortcomings:

[0004] Although the above-mentioned device can effectively brake the rotating shaft of the fan blades, the two sets of braking structures occupy a large installation area, which not only makes the overall structure inconvenient to install, but also results in low maintenance efficiency. Therefore, there is an urgent need for a braking device for wind turbines. Utility Model Content

[0005] The purpose of this invention is to address the shortcomings of existing technologies by proposing a braking device for a wind turbine.

[0006] To achieve the above objectives, the present invention adopts the following technical solution:

[0007] A braking device for a wind turbine includes a housing with bushings fixedly connected to both sides. A rotating shaft is rotatably inserted inside the bushings, and a fan blade is fixedly connected to the end of the rotating shaft. A braking mechanism is fixed to the top of the housing by bolts. An auxiliary braking component is rotatably connected to the front of the braking mechanism. A hydraulic cylinder is fixedly connected to the top outer wall of the housing, and the output end of the hydraulic cylinder is connected to the drive end of the braking mechanism.

[0008] As a further embodiment of this utility model: the braking mechanism includes a connecting shaft, a front plate, a guide plate, a fixing member, a rear plate, a brake ring, a first guide hole, a limiting strip, a second guide hole, a rotating shaft, a guide shaft, a U-shaped plate, a connecting plate, a sector tooth, and a rack plate. The fixing member is fixedly connected to the top inner wall of the chassis, the rear plate is fixedly connected to the bottom of the fixing member, the front plate is fixedly connected to one side of the front of the rear plate, and the guide plate is fixedly connected to the piston end of the hydraulic cylinder.

[0009] As a further embodiment of this utility model: the top of the guide plate and the rear plate slide perpendicularly to each other, the U-shaped plate is fixedly connected to both sides of the guide plate, the connecting plate is rotatably connected to the inner side of the U end of the U-shaped plate, the fan-shaped teeth are rotatably connected to the other end of the connecting plate through the guide shaft, and the rotating shaft is fixedly connected to both inner sides of the rear plate, the fan-shaped teeth and the rotating shaft form a rotatable connection, and the connecting shaft is fixedly connected to the end of the rotating shaft.

[0010] As a further embodiment of this utility model: the second guide hole is opened on both sides of the lower front of the front plate, the first guide hole is opened on one side of the bottom of the rear plate, and the first guide hole and the second guide hole are respectively slidably connected to the limiting strip, which is fixed to both sides of the rack plate.

[0011] As a further embodiment of this utility model: the sector teeth mesh with the rack plate, the brake ring is fixedly connected to the bottom of the rack plate, and the two brake rings wrap around both sides of the circumference of the rotating shaft.

[0012] As a further embodiment of this utility model: the auxiliary braking assembly includes an auxiliary braking plate, a swing arm, a connecting hole and an arc-shaped hole, with the connecting hole opened on both sides of the front of the front plate, the arc-shaped hole opened on the side of the front plate near the connecting hole above, and the top of the swing arm fixedly connected to the circumference of the guide shaft.

[0013] As a further embodiment of this utility model: the top end of the swing arm forms a sliding fit with the arc-shaped hole, the auxiliary brake plate is fixedly connected to the bottom side of the swing arm, and the connecting shaft passes through the connecting hole and is fixedly connected to the middle section of the swing arm.

[0014] Compared with the prior art, this utility model provides a braking device for a wind turbine, which has the following advantages:

[0015] 1. The braking device of the wind turbine generator, by setting a braking mechanism, not only promotes effective braking of the rotating shaft of the fan blade, but also improves braking efficiency and quality. Furthermore, by fitting the front plate and the fixing parts together and installing the fixing parts on the top inner side of the chassis, it solves the problems of inconvenient installation and low maintenance efficiency of the braking device in the prior art, and improves the installation and removal efficiency of the braking mechanism.

[0016] 2. The braking device of the wind turbine generator is equipped with an auxiliary braking component. When the U-shaped plate drives the sector tooth to rotate, the guide shaft drives the top of the swing rod to make an arc-shaped movement in the arc-shaped hole, and the swing rod rotates around the connecting shaft, which drives the auxiliary braking plate at the bottom of the swing rod to move inward to brake the rotating shaft, thus playing an auxiliary braking role and improving the braking effect on the rotating shaft.

[0017] The parts of this device not covered herein are the same as or can be implemented using existing technologies. This utility model has a simple structure and is easy to operate. Attached Figure Description

[0018] Figure 1 This is a schematic diagram of the main structure of this utility model;

[0019] Figure 2 This is a schematic diagram of the internal structure of the chassis in this utility model;

[0020] Figure 3 This is a schematic diagram of the main structure of the braking mechanism in this utility model;

[0021] Figure 4 This is an exploded structural diagram of the braking mechanism in this utility model;

[0022] Figure 5 This is a partial structural diagram of the braking mechanism in this utility model.

[0023] In the diagram: 1. Fan blade; 2. Chassis; 3. Bushing; 4. Rotating shaft; 5. Hydraulic cylinder; 6. Braking mechanism; 7. Auxiliary braking assembly; 601. Connecting shaft; 602. Front plate; 603. Guide plate; 604. Fixing component; 605. Rear plate; 606. Brake ring; 607. Guide hole one; 608. Limiting strip; 609. Guide hole two; 610. Rotating shaft; 611. Guide shaft; 612. U-shaped plate; 613. Connecting plate; 614. Fan-shaped tooth; 615. Rack plate; 701. Auxiliary braking plate; 702. Swing rod; 703. Connecting hole; 704. Arc-shaped hole. Detailed Implementation

[0024] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present utility model. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments.

[0025] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," "linking," and "setting" should be interpreted broadly. For example, they can refer to a fixed connection or setting, a detachable connection or setting, or an integral connection or setting. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.

[0026] A braking device for a wind turbine, such as Figure 1 , Figure 2 , Figure 3 , Figure 4 and Figure 5 As shown, the device includes a chassis 2, with bushings 3 fixedly connected to both sides of the chassis 2, and a rotating shaft 4 rotatably inserted inside the bushings 3. A fan blade 1 is fixedly connected to the end of the rotating shaft 4. A braking mechanism 6 is fixedly fixed to the inner top of the chassis 2 by bolts, and an auxiliary braking component 7 is rotatably connected to the front of the braking mechanism 6. A hydraulic cylinder 5 is bolted to the top outer wall of the chassis 2, and the output end of the hydraulic cylinder 5 is connected to the drive end of the braking mechanism 6.

[0027] In order to facilitate effective braking of the rotating shaft 4 of fan blade 1, such as Figure 3 , Figure 4 and Figure 5 As shown, the braking mechanism 6 includes a connecting shaft 601, a front plate 602, a guide plate 603, a fixing member 604, a rear plate 605, a brake ring 606, a first guide hole 607, a limiting strip 608, a second guide hole 609, a rotating shaft 610, a guide shaft 611, a U-shaped plate 612, a connecting plate 613, a sector tooth 614, and a rack plate 615. The fixing member 604 is fixed to the top inner wall of the housing 2 by bolts, the rear plate 605 is fixedly connected to the bottom of the fixing member 604, the front plate 602 is bolted to one side of the front of the rear plate 605, and the guide plate 603 is threaded to the piston end of the hydraulic cylinder 5.

[0028] The top of the guide plate 603 and the rear plate 605 slide perpendicularly to each other. The U-shaped plate 612 is fixedly connected to both sides of the guide plate 603. The connecting plate 613 is rotatably connected to the inner side of the U end of the U-shaped plate 612. The fan-shaped tooth 614 is rotatably connected to the other end of the connecting plate 613 through the guide shaft 611. The rotating shaft 610 is fixedly connected to both inner sides of the rear plate 605. The fan-shaped tooth 614 and the rotating shaft 610 form a rotatable connection. The connecting shaft 601 is threadedly connected to the end of the rotating shaft 610.

[0029] The second guide hole 609 is opened on both sides of the lower front of the front plate 602, and the first guide hole 607 is opened on one side of the bottom of the rear plate 605. The first guide hole 607 and the second guide hole 609 are respectively slidably connected to the limit strip 608. The limit strip 608 is fixed on both sides of the rack plate 615. The fan-shaped tooth 614 meshes with the rack plate 615. The brake ring 606 is fixedly connected to the bottom of the rack plate 615, and the two brake rings 606 wrap around the circumference of the rotating shaft 4.

[0030] During operation, the hydraulic cylinder 5 is activated to drive the guide plate 603 to slide downward on the top of the rear plate 605. The guide plate 603 pulls the U-shaped plate 612 downward. The U-shaped plate 612 pulls the fan-shaped tooth 614 to rotate around the rotating shaft 610 by a certain angle through the connecting plate 613. The rotating fan-shaped tooth 614 drives the two rack plates 615 to move inward horizontally. During this period, the limiting strips 608 located on both sides of the rack plate 615 slide within the limiting strips 608 and the second guide hole 609.

[0031] Meanwhile, the brake ring 606 located at the bottom of the rack plate 615 moves closer to both sides of the circumference of the rotating shaft 4, gradually locking the rotating shaft 4 and completing the braking. This not only promotes effective braking of the rotating shaft 4 of the fan blade 1, but also improves braking efficiency and quality. Furthermore, by fitting the front plate 602 and the fixing member 604 together and installing it on the top inner side of the chassis 2 through the fixing member 604, the problems of inconvenient installation and low maintenance efficiency of the braking device in the prior art are solved, and the installation and removal efficiency of the braking mechanism 6 is improved.

[0032] Please continue reading. Figure 4 In order to improve the braking effect on the rotating shaft 4, the auxiliary braking assembly 7 includes an auxiliary braking plate 701, a rocker arm 702, a connecting hole 703 and an arc-shaped hole 704. The connecting hole 703 is opened on both sides of the front of the front plate 602, and the arc-shaped hole 704 is opened on the side of the front plate 602 near the connecting hole 703. The top end of the rocker arm 702 is threaded to the circumference of the guide shaft 611.

[0033] The top end of the swing arm 702 is slidably fitted with the arc-shaped hole 704, the auxiliary brake plate 701 is fixedly connected to the bottom side of the swing arm 702, and the connecting shaft 601 passes through the connecting hole 703 and is fixedly connected to the middle section of the swing arm 702.

[0034] When the U-shaped plate 612 drives the sector tooth 614 to rotate, the guide shaft 611 drives the top of the rocker arm 702 to make an arc-shaped movement in the arc-shaped hole 704, and the rocker arm 702 rotates around the connecting shaft 601, which drives the auxiliary brake plate 701 at the bottom of the rocker arm 702 to move inward to brake the rotating shaft 4, thus playing an auxiliary braking role and improving the braking effect on the rotating shaft 4.

[0035] The above description is only a preferred embodiment of the present utility model, but the protection scope of the present utility model is not limited thereto. Any equivalent substitutions or changes made by those skilled in the art within the technical scope disclosed in the present utility model, based on the technical solution and the inventive concept of the present utility model, should be included within the protection scope of the present utility model.

Claims

1. A brake device of a wind power generator, comprising a machine box (2) with a shaft sleeve (3) fixedly connected on both sides, characterized in that, The rotating shaft (4) is inserted into the shaft sleeve (3) and fixedly connected with the fan blade (1), the inner top of the cabinet (2) is fixedly connected with the brake mechanism (6), the front surface of the brake mechanism (6) is rotatably connected with the auxiliary brake assembly (7), and the top outer wall of the cabinet (2) is fixedly connected with the hydraulic cylinder (5).

2. A brake device for a wind driven electric generator according to claim 1, wherein The brake mechanism (6) comprises a connecting shaft (601), a front plate (602), a guide plate (603), a fixing piece (604), a rear plate (605), a brake ring (606), a guide hole I (607), a limiting strip (608), a guide hole II (609), a rotating shaft (610), a guide shaft (611), a U-shaped plate (612), a connecting plate (613), a fan-shaped tooth (614) and a rack plate (615), the fixing piece (604) is fixedly connected to the inner top wall of the cabinet (2), the rear plate (605) is fixedly connected to the bottom of the fixing piece (604), the front plate (602) is fixedly connected to the front side of the rear plate (605), and the guide plate (603) is fixedly connected to the piston end of the hydraulic cylinder (5).

3. A brake device for a wind driven electric generator according to claim 2, wherein The top of the guide plate (603) and the rear plate (605) is perpendicular to each other and slides, the U-shaped plate (612) is fixedly connected to the two sides of the guide plate (603), the connecting plate (613) is rotatably connected to the inner side of the U-shaped plate (612), the fan-shaped tooth (614) is rotatably connected to the other end of the connecting plate (613) through the guide shaft (611), the rotating shaft (610) is fixedly connected to the two inner sides of the rear plate (605), the fan-shaped tooth (614) is rotatably connected to the rotating shaft (610), and the connecting shaft (601) is fixedly connected to the end of the rotating shaft (610).

4. A brake device for a wind driven electric generator according to claim 2, wherein The guide hole II (609) is arranged on the front side of the front plate (602), the guide hole I (607) is arranged on the side of the bottom of the rear plate (605), and the guide hole I (607) and the guide hole II (609) are slidably connected with the limiting strip (608), and the limiting strip (608) is fixed to the two sides of the rack plate (615).

5. A brake device for a wind driven electric generator according to claim 2, wherein The fan-shaped tooth (614) is meshed with the rack plate (615), the brake ring (606) is fixedly connected to the bottom of the rack plate (615), and the two brake rings (606) are wrapped on the two sides of the circumference of the rotating shaft (4).

6. A brake device for a wind driven electric generator according to claim 1, wherein The auxiliary brake assembly (7) comprises an auxiliary brake plate (701), a swing rod (702), a connecting hole (703) and an arc-shaped hole (704), the connecting hole (703) is arranged on the front side of the front plate (602), the arc-shaped hole (704) is arranged on the side above the connecting hole (703) of the front plate (602), and the top end of the swing rod (702) is fixedly connected to the circumference of the guide shaft (611).

7. A brake device for a wind driven electric generator according to claim 6, wherein The top end of the swing rod (702) is slidably connected with the arc-shaped hole (704), the auxiliary brake plate (701) is fixedly connected to the bottom side of the swing rod (702), and the connecting shaft (601) is fixedly connected with the middle section of the swing rod (702) through the connecting hole (703).

Images