Brake mechanism for wind power generation

Abstract

The utility model relates to the technical field of wind power generation equipment, in particular to a brake mechanism for wind power generation, and solves the technical problems that in the prior art, as the size of a brake pad of an existing brake mechanism for wind power generation is fixed, and the friction area between the brake pad and a transmission shaft is small, the brake force is small; and a person needs to select a brake disc with a larger diameter to improve the brake strength, so that the use cost is increased, and the practicability of the brake mechanism is reduced. A brake mechanism for wind power generation comprises a tower, a mounting box is arranged at the top of the tower, a transmission shaft is arranged in the mounting box, and a fan blade assembly is arranged on one side of the mounting box; two sets of brake pads are symmetrically arranged on the two sides of the outer portion of the transmission shaft. According to the wind power generation braking mechanism, the speed reduction braking effect is achieved, the braking area is larger by comprehensively limiting the outer side of the transmission shaft, the effect of improving braking force is achieved, and therefore the use cost is reduced, and the practicability of the wind power generation braking mechanism is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of wind power generation equipment, in particular to a brake mechanism for wind power generation. Background Art

[0002] Wind power generation refers to the use of wind power to drive the windmill blades to rotate, and then the speed of rotation is increased by the speed increaser to drive the generator to generate electricity. Wind energy is a clean and pollution-free renewable energy that has been used by people for a long time, such as using windmills to pump water and grind flour. In recent years, with the advancement of technology and the improvement of environmental awareness, wind power generation, as a clean and renewable energy form, has received more and more attention and application.

[0003] At present, most of the existing wind power generation brake mechanisms are disc brakes. Since the size of the brake pad is relatively fixed, the friction area between it and the transmission shaft is small, so the braking force is also small. It may be necessary to use a brake disc with a larger diameter to increase the braking force, resulting in increased use costs. At the same time, the existing brake pads are relatively fixed in installation, resulting in greater wear intensity. Frequent replacement of brake pads also leads to increased costs, causing the practicality of the brake mechanism to decrease. Therefore, we propose a wind power generation brake mechanism to solve the above problems. Utility Model Content

[0004] The purpose of the utility model is to provide a brake mechanism for wind power generation, which solves the problem that the existing wind power generation brake mechanism in the prior art has a relatively fixed brake pad size, a small friction area between the brake pad and the transmission shaft, resulting in a small braking force, and personnel need to use a brake disc with a larger diameter to increase the braking force, which increases the cost of use and causes a decrease in the practicality of the brake mechanism.

[0005] In order to achieve the above purpose, the utility model adopts the following technical solutions:

[0006] A wind power generation brake mechanism comprises a tower, a mounting box is arranged on the top of the tower, a transmission shaft is arranged inside the mounting box, and a fan blade assembly is arranged on one side of the mounting box;

[0007] Two sets of brake pads are symmetrically arranged on both sides of the outside of the transmission shaft, and one set of brake pads consists of two, and the plurality of brake pads are all arc-shaped;

[0008] A transmission assembly connected to a plurality of brake pads is arranged inside the installation box;

[0009] The inner bottom of the installation box is symmetrically provided with two limiting grooves.

[0010] Preferably, the transmission assembly includes two bidirectional screw rods symmetrically arranged in the installation box, one end of the two bidirectional screw rods are rotatably connected to the adjacent inner wall of the installation box, and a motor is fixedly installed on the inner wall of one side of the installation box, the other end of one of the bidirectional screw rods is transmission connected to the output end of the motor, and the other end of the other bidirectional screw rod is rotatably connected to the inner wall of one side of the installation box.

[0011] Preferably, the transmission assembly also includes screw sleeves sleeved on both ends of the outside of the bidirectional screw rod, and the bottom of the outer rings of the plurality of screw sleeves are fixedly connected to limit rods that are compatible with the limit grooves, and the adjacent side walls of two adjacent limit rods are fixedly installed with damping rods, and the end of the damping rod away from the limit rod is fixedly installed on the outer arc surface of the brake pad.

[0012] Preferably, the transmission assembly further comprises two sprockets symmetrically arranged in the installation box, the interiors of the two sprockets are socketed with the outer middle parts of the two bidirectional screw rods, and the exteriors of the two sprockets are meshedly connected with a chain.

[0013] Preferably, springs are sleeved on the exterior of the plurality of damping rods, and both ends of the plurality of springs are fixedly connected to one side of an adjacent limiting rod and an outer arc surface of an adjacent brake pad.

[0014] Preferably, one end of the transmission shaft passes through the side wall of the installation box and is rotatably connected to one end of the fan blade assembly, the other end of the transmission shaft is rotatably connected to the adjacent inner wall of the installation box, and the bottom of the installation box is fixedly mounted to the top of the tower.

[0015] The utility model has at least the following beneficial effects:

[0016] The motor is started and the two bidirectional lead screws are driven to rotate simultaneously through the two sprockets and the chain, so that the multiple sleeves are displaced towards each other, and then the limit rod drives the damping rod and the brake pad to move to clamp the outside of the transmission shaft, so that the transmission shaft cannot continue to rotate, thereby fixing the fan blade assembly and achieving the effect of deceleration and braking. By limiting the external side of the transmission shaft more comprehensively, the braking area is made larger to achieve the effect of increasing the braking force, thereby reducing the cost of use and improving the practicality of the wind power generation brake mechanism.

[0017] The utility model also has the following beneficial effects:

[0018] The spring and the damping rod can increase the buffering effect, preventing the limit rod from driving the brake pad to move with excessive force, thereby causing greater wear on the drive shaft. At the same time, it can adapt to drive shafts of different diameters to a certain extent, reducing personnel usage costs. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] In order to more clearly illustrate the technical solutions of the embodiments of the utility model, the drawings required for use in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are some embodiments of the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0020] Figure 1 It is a schematic diagram of the structure of the utility model;

[0021] Figure 2 It is a cutaway view of the installation box of the utility model;

[0022] Figure 3 It is a structural schematic diagram of the transmission shaft of the utility model;

[0023] Figure 4 It is a structural schematic diagram of the chain of the utility model;

[0024] Figure 5 The utility model is a schematic diagram of the structure of the brake pad.

[0025] In the figure: 1. tower; 2. installation box; 3. fan blade assembly; 4. transmission shaft; 5. motor; 6. bidirectional screw; 7. screw sleeve; 8. limit rod; 9. chain; 10. spring; 11. brake pad; 12. damping rod; 13. sprocket. DETAILED DESCRIPTION

[0026] In order to make the purpose, technical solution and advantages of the utility model more clear, the utility model is further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described here are only used to explain the utility model and are not used to limit the utility model.

[0027] Embodiment 1

[0028] Reference Figure 1-5 A wind power generation brake mechanism includes a tower 1, a mounting box 2 is provided on the top of the tower 1, a transmission shaft 4 is provided inside the mounting box 2, and a fan blade assembly 3 is provided on one side of the mounting box 2; two groups of brake pads 11 are symmetrically provided on both sides of the outside of the transmission shaft 4, and a group of brake pads 11 has two, and the multiple brake pads 11 are all arc-shaped; a transmission component connected to the multiple brake pads 11 is provided inside the mounting box 2; and two limit grooves are symmetrically opened on the inner bottom of the mounting box 2.

[0029] According to the above embodiment, it can be known that: by starting the transmission component, the brake pad 11 is moved to clamp the outside of the transmission shaft 4, so that the transmission shaft 4 cannot continue to rotate, the fan blade assembly 3 is fixed, and the deceleration braking effect is achieved. By more comprehensively limiting the external side of the transmission shaft, the braking area is made larger to achieve the effect of increasing the braking force, thereby reducing the cost of use and improving the practicality of the wind power generation brake mechanism.

[0030] Embodiment 2

[0031] Reference Figure 1-5 A brake mechanism for wind power generation, the transmission assembly includes two bidirectional screw rods 6 symmetrically arranged in the installation box 2, one end of the two bidirectional screw rods 6 are rotatably connected to the adjacent inner wall of the installation box 2, and a motor 5 is fixedly installed on the inner wall of one side of the installation box 2, the other end of one bidirectional screw rod 6 is transmission-connected to the output end of the motor 5, and the other end of the other bidirectional screw rod 6 is rotatably connected to the inner wall of one side of the installation box 2.

[0032] The transmission assembly also includes screw sleeves 7 which are sleeved on both ends of the outside of the bidirectional screw rod 6. The bottom of the outer rings of the multiple screw sleeves 7 are fixedly connected to limit rods 8 that are compatible with the limit grooves. The adjacent side walls of two adjacent limit rods 8 are fixedly installed with damping rods 12, and the end of the damping rod 12 away from the limit rod 8 is fixedly installed on the outer arc surface of the brake pad 11.

[0033] The transmission assembly also includes two sprocket wheels 13 symmetrically arranged in the installation box 2 , the interiors of the two sprocket wheels 13 are sleeved with the outer middle parts of the two bidirectional screw rods 6 , and the exteriors of the two sprocket wheels 13 are meshed and connected with the chain 9 .

[0034] According to the above embodiment, it can be known that: the motor 5 is started by an external controller to drive one of the two-way screw rods 6 to rotate, and then the other two-way screw rod 6 is driven to rotate through two sprockets 13 and the chain 9, so that multiple screw sleeves 7 produce lateral displacement close to each other, so that the screw sleeves 7 drive the limit rod 8 to move, and the limit rod 8 then drives the damping rod 12 to move and the brake pad 11 to move to clamp the outside of the transmission shaft 4 to brake, so that the transmission shaft 4 cannot continue to rotate, and the fan blade assembly 3 is fixed, so that the fan blade assembly 3 can no longer rotate, thereby improving the practicality of the wind power generation brake mechanism.

[0035] Embodiment 3

[0036] Reference Figure 1-5 A wind power generation brake mechanism, wherein multiple damping rods 12 are sleeved with springs 10 on their exteriors, and both ends of the multiple springs 10 are fixedly connected to one side of an adjacent limiting rod 8 and an outer arc surface of an adjacent brake pad 11.

[0037] One end of the transmission shaft 4 passes through the side wall of the installation box 2 and is rotatably connected to one end of the fan blade assembly 3. The other end of the transmission shaft 4 is rotatably connected to the adjacent inner wall of the installation box 2. The bottom of the installation box 2 is fixedly installed with the top of the tower 1.

[0038] According to the above embodiments, it can be known that: through the arrangement of the spring 10 and the damping rod 12, the damping rod 12 and the spring 10 can increase the buffering effect, avoid the situation where the limit rod 8 drives the brake pad 11 to move with excessive force and causes serious damage to the transmission shaft 4, and at the same time adapt to transmission shafts 4 of different diameters to a certain extent.

[0039] In summary:

[0040] The motor 5 is started by an external controller to drive one of the two-way screw rods 6 to rotate, and then the other two-way screw rod 6 is driven to rotate through two sprockets 13 and the chain 9, so that multiple screw sleeves 7 are laterally displaced closer to each other, so that the screw sleeves 7 drive the limit rod 8 to move, and the limit rod 8 then drives the damping rod 12 to move and moves the brake pad 11 to clamp and brake the outside of the transmission shaft 4, so that the transmission shaft 4 cannot continue to rotate, and the fan blade assembly 3 is fixed, so that the fan blade assembly 3 can no longer rotate, achieving the effect of deceleration braking, and through more comprehensive limitation of the external side of the transmission shaft, the braking area is made larger to achieve the effect of increasing the braking force, thereby reducing the cost of use and improving the practicality of the wind power generation brake mechanism.

[0041] The above shows and describes the basic principle, main features and advantages of the utility model. Those skilled in the art should understand that the utility model is not limited by the above embodiments. The above embodiments and the specification only describe the principles of the utility model. The utility model may be subject to various changes and improvements without departing from the spirit and scope of the utility model. These changes and improvements fall within the scope of the utility model to be protected. The scope of protection claimed by the utility model is defined by the attached claims and their equivalents.

Claims

1. A wind power generation brake mechanism, comprising a tower (1), characterized in that: A mounting box (2) is provided on the top of the tower (1), a transmission shaft (4) is provided inside the mounting box (2), and a fan blade assembly (3) is provided on one side of the mounting box (2); Two groups of brake pads (11) are symmetrically arranged on both sides of the outside of the transmission shaft (4), and a group of brake pads (11) consists of two, and the plurality of brake pads (11) are all arc-shaped; A transmission assembly connected to a plurality of brake pads (11) is arranged inside the installation box (2); The inner bottom of the installation box (2) is symmetrically provided with two limiting grooves.

2. A wind power generation brake mechanism according to claim 1, characterized in that: The transmission assembly comprises two bidirectional screw rods (6) symmetrically arranged in an installation box (2), one end of each of the two bidirectional screw rods (6) being rotatably connected to adjacent inner side walls of the installation box (2), a motor (5) being fixedly mounted on one inner wall of the installation box (2), the other end of one of the bidirectional screw rods (6) being transmission-connected to the output end of the motor (5), and the other end of the other bidirectional screw rod (6) being rotatably connected to the inner wall of one side of the installation box (2).

3. A wind power generation brake mechanism according to claim 1, characterized in that: The transmission assembly also includes screw sleeves (7) sleeved on both ends of the bidirectional screw rod (6), the outer ring bottoms of the plurality of screw sleeves (7) are fixedly connected with limit rods (8) adapted to the limit grooves, the adjacent side walls of two adjacent limit rods (8) are fixedly installed with damping rods (12), and one end of the damping rod (12) away from the limit rod (8) is fixedly installed with the outer arc surface of the brake pad (11).

4. A wind power generation brake mechanism according to claim 1, characterized in that: The transmission assembly also includes two sprocket wheels (13) symmetrically arranged in the installation box (2), the interiors of the two sprocket wheels (13) are sleeved with the outer middle parts of the two bidirectional screw rods (6), and the exteriors of the two sprocket wheels (13) are meshedly connected with the chain (9).

5. A wind power generation brake mechanism according to claim 3, characterized in that: The outer parts of the plurality of damping rods (12) are all sleeved with springs (10), and both ends of the plurality of springs (10) are fixedly connected to one side of an adjacent limiting rod (8) and the outer arc surface of an adjacent brake pad (11).

6. A wind power generation brake mechanism according to claim 1, characterized in that: One end of the transmission shaft (4) passes through the side wall of the installation box (2) and is rotatably connected to one end of the fan blade assembly (3); the other end of the transmission shaft (4) is rotatably connected to the adjacent inner wall of the installation box (2); and the bottom of the installation box (2) is fixedly mounted to the top of the tower (1).

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