Automatic brake device for wind power generation

Abstract

The automatic brake device comprises a power generation input shaft, a brake disc is fixedly installed in the middle of the power generation input shaft, the power generation input shaft is rotationally connected with vertical plates located on the two sides of the brake disc in a penetrating mode, and a bottom plate is fixedly installed at the bottoms of the vertical plates. The vertical plates are rotationally connected with two-way lead screws located on the front side and the rear side of the power generation input shaft, the two-way lead screws are connected with a displacement block located between the two vertical plates in a penetrating and threaded mode, a brake pad is fixedly installed at one end of the displacement block, and second clutch discs located on the outer sides of the vertical plates are fixedly installed at one ends of the two-way lead screws. A sliding frame located on the outer side of the vertical plate is fixedly mounted at the top of the bottom plate, and a driving motor is slidably connected to the top of the sliding frame. The brake disc is decelerated firstly, then the brake disc is braked, and the problems that in the prior art, due to direct clamping of a brake pad, large abrasion is caused, and damage is likely to occur are solved.

Description

Technical Field

[0001] The utility model relates to the technical field of wind power generation, in particular to an automatic braking device for wind power generation. Background Technique

[0002] With the development and utilization of pollution-free renewable energy by people, wind power generation has been paid more and more attention. In recent years, while the wind power industry has been developing rapidly, the control technology and safety requirements for wind turbines have become higher and higher. Wind power generation equipment is in the natural environment with large wind speed changes. If the wind speed is too high, the power generation efficiency of the generator will be relatively low. When the wind speed is extremely high, if deceleration braking measures are not taken for the wind turbine in time, the wind turbine will exceed the maximum operating speed and cause damage.

[0003] However, the braking devices of the existing technology are very prone to damage when facing the wind power generation shaft with very large torque, and at the beginning of braking, the friction caused is very large, affecting its service life.

[0004] Therefore, we propose an automatic braking device for wind power generation. Content of the Utility Model

[0005] The purpose of the utility model is to provide an automatic braking device for wind power generation to solve the problems raised in the above background technique.

[0006] To achieve the above purpose, the utility model provides the following technical scheme: an automatic braking device for wind power generation, including a power generation input shaft, a brake disc is fixedly installed in the middle of the power generation input shaft, the power generation input shaft penetrates and is rotationally connected with vertical plates located on both sides of the brake disc, the bottom of the vertical plates is fixedly installed with a bottom plate, the vertical plates are rotationally connected with a bidirectional lead screw located on the front and rear sides of the power generation input shaft, the bidirectional lead screw penetrates and is threadedly connected with a displacement block located between the two vertical plates, one end of the displacement block is fixedly installed with a brake pad, one end of the bidirectional lead screw is fixedly installed with a second clutch plate located outside the vertical plate, the top of the bottom plate is fixedly installed with a sliding frame located outside the vertical plate, the top of the sliding frame is slidably connected with a driving motor, an electric push rod is fixedly installed at the top inside the sliding frame, the movable end of the electric push rod is fixedly installed with the bottom of the driving motor, and a first clutch plate is fixedly installed at the output end of the driving motor, and the first clutch plate is in tight contact with the second clutch plate.

[0007] Optionally, a sliding groove is opened at the top of the sliding frame, a sliding block is slidably connected inside the sliding groove, and the top of the sliding block is fixedly installed with the bottom of the driving motor.

[0008] Optionally, the movable end of the electric push rod is fixedly installed at the bottom of the sliding block, and the length of the electric push rod is greater than the length of the sliding block.

[0009] Optionally, guide slide rods are fixedly installed on the front and rear sides of the opposite surfaces of the two vertical plates, and one end of the guide slide rod is connected to the displacement block through sliding.

[0010] Optionally, the two brake pads are respectively fixedly installed on the opposite surfaces of the two displacement blocks, and the two brake pads are respectively in tight contact with both sides of the brake disc.

[0011] Optionally, a number of uniformly distributed through holes are provided in the middle of the brake disc, and a through groove communicating with the through holes is provided on the outer peripheral surface of the brake disc.

[0012] Optionally, the first clutch disc and the second clutch disc are coaxially arranged, and anti-slip lines are provided on the opposite surfaces of the first clutch disc and the second clutch disc.

[0013] Compared with the prior art, the beneficial effects of the present utility model are:

[0014] For the automatic braking device for wind power generation, by providing the first clutch disc and the second clutch disc, when it is necessary to brake the power generation input shaft, the electric push rod pushes the driving motor to move, so that the first clutch disc is in close contact with the second clutch disc, and then the first clutch disc drives the second clutch disc and the bidirectional lead screw to rotate, so that the two moving blocks approach each other along the guide slide rod, and then the brake pads are in close contact with the brake disc, so that the brake disc drives the power generation input shaft to decelerate.

[0015] For the automatic braking device for wind power generation, by providing the first clutch disc and the second clutch disc, when the torque of the power generation input shaft is too large and the thrust of the electric push rod is small, the first clutch disc and the second clutch disc are in a semi-coupled state, the rotational force of the bidirectional lead screw is small, the pressing force between the brake pads and the brake disc is small, so that the rotational speeds of the brake disc and the power generation input shaft continuously decrease. As the rotational speeds of the brake disc and the power generation input shaft continuously decrease, the torque of the brake disc also decreases. The electric push rod fully pushes the first clutch disc, so that the first clutch disc and the second clutch disc are completely attached, and then the bidirectional lead screw rotates with full force, so that the brake pads are completely in close contact with the brake disc, and then the power generation input shaft is braked. First, the brake disc is decelerated, and then the effect of braking it is achieved, solving the problems that direct clamping by the brake pads in the prior art will cause large wear and is very likely to be damaged. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a schematic diagram of the overall structure of an automatic braking device for wind power generation according to the present utility model;

[0017] Figure 2Schematic structural diagram of the vertical plate of an automatic braking device for wind power generation according to the present utility model;

[0018] Figure 3 Schematic structural diagram of the bidirectional lead screw of an automatic braking device for wind power generation according to the present utility model.

[0019] In the figure: 1, power generation input shaft; 2, brake disc; 3, vertical plate; 4, bottom plate; 5, sliding frame; 6, sliding block; 7, electric push rod; 8, drive motor; 9, sliding groove; 10, first clutch disc; 11, bidirectional lead screw; 12, second clutch disc; 13, displacement block; 14, brake pad; 15, guiding slide bar. Specific implementation manners

[0020] Next, the technical solutions in the embodiments of the present utility model will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present utility model. Obviously, the described embodiments are only a part of the embodiments of the present utility model, rather than all the embodiments. Based on the embodiments in the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present utility model.

[0021] Please refer to Figures 1 to 3 , the present utility model provides an automatic braking device for wind power generation, including a power generation input shaft 1. A brake disc 2 is fixedly installed in the middle of the power generation input shaft 1. The power generation input shaft 1 penetrates and is rotatably connected to vertical plates 3 located on both sides of the brake disc 2. The bottom of the vertical plate 3 is fixedly installed with a bottom plate 4. The vertical plate 3 is rotatably connected to a bidirectional lead screw 11 located on the front and back sides of the power generation input shaft 1. The bidirectional lead screw 11 penetrates and is threadedly connected to a displacement block 13 located between the two vertical plates 3. One end of the displacement block 13 is fixedly installed with a brake pad 14. One end of the bidirectional lead screw 11 is fixedly installed with a second clutch disc 12 located outside the vertical plate 3. The top of the bottom plate 4 is fixedly installed with a sliding frame 5 located outside the vertical plate 3. The top of the sliding frame 5 is slidably connected to a drive motor 8. An electric push rod 7 is fixedly installed at the top inside the sliding frame 5. The movable end of the electric push rod 7 is fixedly installed with the bottom of the drive motor 8. The output end of the drive motor 8 is fixedly installed with a first clutch disc 10. The first clutch disc 10 is in abutting contact with the second clutch disc 12. By providing the first clutch disc 10 and the second clutch disc 12, when it is necessary to brake the power generation input shaft 1, the electric push rod 7 pushes the drive motor 8 to move, so that the first clutch disc 10 is in close contact with the second clutch disc 12, and then the first clutch disc 10 drives the second clutch disc 12 and the bidirectional lead screw 11 to rotate, so that the two moving blocks approach each other along the guiding slide bar 15, and then the brake pad 14 abuts against the brake disc 2, so that the brake disc 2 drives the power generation input shaft 1 to decelerate.

[0022] A sliding groove 9 is formed in the top of the sliding carriage 5. A sliding block 6 is slidably connected inside the sliding groove 9. The top of the sliding block 6 is fixedly installed with the bottom of the driving motor 8. The movable end of the electric push rod 7 is fixedly installed with the bottom of the sliding block 6. The length of the electric push rod 7 is greater than that of the sliding block 6. Guide sliding rods 15 are fixedly installed on the front and rear sides of the opposite surfaces of the two vertical plates 3. One end of the guide sliding rod 15 and the displacement block 13 are slidably connected through. Two brake pads 14 are respectively fixedly installed on the opposite surfaces of the two displacement blocks 13. The two brake pads 14 are respectively in tight contact with both sides of the brake disc 2. A number of uniformly distributed through holes are arranged in the middle of the brake disc 2. A through groove communicating with the through holes is formed on the outer peripheral surface of the brake disc 2. The first clutch disc 10 and the second clutch disc 12 are coaxially arranged. Anti-slip patterns are arranged on the opposite surfaces of the first clutch disc 10 and the second clutch disc 12. By arranging the first clutch disc 10 and the second clutch disc 12, when the torque of the power generation input shaft 1 is too large and the thrust of the electric push rod 7 is small, the first clutch disc 10 and the second clutch disc 12 are in a semi-coupled state, the rotational force of the bidirectional lead screw 11 is small, and the tightening force between the brake pad 14 and the brake disc 2 is small, so that the rotational speeds of the brake disc 2 and the power generation input shaft 1 continuously decrease. As the rotational speeds of the brake disc 2 and the power generation input shaft 1 continuously decrease, the torque of the brake disc 2 also decreases. The electric push rod 7 fully pushes the first clutch disc 10, so that the first clutch disc 10 and the second clutch disc 12 are completely attached, and then the bidirectional lead screw 11 rotates fully, so that the brake pads 14 are completely attached to the brake disc 2, and then the power generation input shaft 1 is braked. First, the brake disc 2 is decelerated, and then the effect of braking it is achieved, solving the problems that direct clamping by the brake pads 14 in the prior art will cause large wear and is very likely to be damaged.

[0023] Working principle:

[0024] When it is necessary to brake the power generation input shaft 1, the electric push rod 7 pushes the drive motor 8 to move, so that the first clutch disc 10 is in close contact with the second clutch disc 12. Then, the first clutch disc 10 drives the second clutch disc 12 and the bidirectional lead screw 11 to rotate, so that the two moving blocks approach each other along the guide slide rod 15. Further, the brake pads 14 are pressed against the brake disc 2, so that the brake disc 2 drives the power generation input shaft 1 to decelerate. When the torque of the power generation input shaft 1 is too large and the thrust of the electric push rod 7 is small, the first clutch disc 10 and the second clutch disc 12 are in a semi-coupled state, the rotational force of the bidirectional lead screw 11 is small, and the pressing force between the brake pads 14 and the brake disc 2 is small, so that the rotational speeds of the brake disc 2 and the power generation input shaft 1 continuously decrease. As the rotational speeds of the brake disc 2 and the power generation input shaft 1 continuously decrease, the torque of the brake disc 2 also decreases. The electric push rod 7 fully pushes the first clutch disc 10, so that the first clutch disc 10 and the second clutch disc 12 are completely attached, and then the bidirectional lead screw 11 rotates fully, so that the brake pads 14 are completely pressed against the brake disc 2, and then the power generation input shaft 1 is braked. First, the brake disc 2 is decelerated, and then the effect of braking it is achieved.

[0025] Although the embodiments of the present invention have been shown and described, those of ordinary skill in the art can understand that various changes, modifications, substitutions, and variations can be made to these embodiments without departing from the principles and spirit of the present invention. The scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. An automatic braking device for wind power generation, comprising a power generation input shaft (1), characterized in that, A brake disc (2) is fixedly installed in the middle of the power generation input shaft (1). The power generation input shaft (1) passes through and is rotatably connected to vertical plates (3) located on both sides of the brake disc (2). The bottom of the vertical plates (3) is fixedly installed with a bottom plate (4). The vertical plates (3) are rotatably connected to a bidirectional lead screw (11) located on the front and rear sides of the power generation input shaft (1). The bidirectional lead screw (11) passes through and is threadedly connected to a displacement block (13) located between the two vertical plates (3). One end of the displacement block (13) is fixedly installed with a brake pad (14). One end of the bidirectional lead screw (11) is fixedly installed with a second clutch disc (12) located outside the vertical plate (3). The top of the bottom plate (4) is fixedly installed with a sliding frame (5) located outside the vertical plate (3). The top of the sliding frame (5) is slidably connected to a driving motor (8). The top inside the sliding frame (5) is fixedly installed with an electric push rod (7). The movable end of the electric push rod (7) is fixedly installed with the bottom of the driving motor (8). The output end of the driving motor (8) is fixedly installed with a first clutch disc (10). The first clutch disc (10) is in tight contact with the second clutch disc (12).

2. The automatic braking device for wind power generation according to claim 1, characterized in that, A sliding groove (9) is formed in the top of the sliding frame (5). A sliding block (6) is slidably connected inside the sliding groove (9). The top of the sliding block (6) is fixedly installed with the bottom of the driving motor (8).

3. The automatic braking device for wind power generation according to claim 2, characterized in that, The movable end of the electric push rod (7) is fixedly installed with the bottom of the sliding block (6). The length of the electric push rod (7) is greater than the length of the sliding block (6).

4. An automatic braking device for wind power generation according to claim 1, characterized in that, Guide sliding rods (15) are fixedly installed on the front and rear sides of the opposite surfaces of the two vertical plates (3). The guide sliding rods (15) pass through and are slidably connected to one end of the displacement block (13).

5. An automatic braking device for wind power generation according to claim 1, characterized in that, The two brake pads (14) are respectively fixedly installed on the opposite surfaces of the two displacement blocks (13). The two brake pads (14) are respectively in tight contact with both sides of the brake disc (2).

6. The automatic braking device for wind power generation according to claim 1, wherein A number of uniformly distributed through holes are provided in the middle of the brake disc (2). A through groove communicating with the through holes is formed on the outer peripheral surface of the brake disc (2).

7. The automatic braking device for wind power generation according to claim 1, characterized in that, The first clutch disc (10) and the second clutch disc (12) are coaxially arranged. Anti-slip patterns are provided on the opposite surfaces of the first clutch disc (10) and the second clutch disc (12).

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