Automatic locking device for hub of wind turbine generator

Abstract

The utility model relates to the technical field of wind turbine generators, in particular to a wind turbine generator hub automatic locking device which comprises a wind turbine generator body, a rotating shaft large disc is rotationally connected in the wind turbine generator body, an induction assembly located on the outer side of the rotating shaft large disc is installed on the wind turbine generator body, and a collision block is installed on the outer side of the rotating shaft large disc. The induction assembly comprises a rectangular cylinder installed on the wind turbine generator body, a rectangular extension rod is slidably connected into the rectangular cylinder, a push-pull assembly connected with the rectangular extension rod is installed in the rectangular cylinder, an abutting block is installed at the end of the rectangular extension rod, and a limiting switch is installed at the upper end of the abutting block in a telescopic mode. The utility model has the advantages that the rectangular extension bar is in sliding connection with the rectangular cylinder, so that the supporting capability is stronger, and the limit switch and the abutting block which are impacted can be conveniently supported; the limit switch falls into the protection groove after being impacted, so that the limit switch is protected, and the service life of the limit switch is prolonged.

Description

Technical Field

[0001] The utility model relates to the technical field of wind turbine units, and specifically refers to an automatic locking device for a wind turbine hub. Background Technique

[0002] The hub of a wind turbine unit is an important component in a wind power generation unit. Its main functions are to fix the blades and form a rotor system, and at the same time connect the rotor system to the main shaft. As the basis for installing the blades, the hub needs to bear the bending moment caused by the mass of the blades, the pressure caused by the wind force, and the reaction force generated by the wind turbine shaft on the above stresses, and these stresses are cyclic and alternating.

[0003] Chinese Publication No.: CN217558468U discloses a position detection and locking device for a wind turbine hub, including a collision block, an induction component, and a rotating shaft large disc. By colliding the collision block installed on the rotating shaft large disc with the limit switch installed on the induction component, it is detected whether the rotating shaft large disc rotates in place, and then the rotating shaft large disc is locked in the in-place position. However, in the application device, the limit switch is installed at the end of the threaded column, and the outer side of the threaded column does not contact the protection tube. The threaded column is supported by a slider and a screw rod, and the supporting ability is poor, and it is easy to be damaged under the impact of the collision block. Moreover, the collision block directly impacts the limit switch, which is easy to cause damage to the limit switch, resulting in a short service life of the induction component. Content of the Utility Model

[0004] I. Technical Problems to be Solved

[0005] The technical problem to be solved by the utility model is that in the existing automatic locking device for a wind turbine hub, the induction component is easily damaged under the impact of the collision block and has a short service life.

[0006] II. Technical Solution

[0007] To solve the above technical problems, the technical solution provided by the utility model is: an automatic locking device for a wind turbine hub, including a wind turbine unit body. A rotating shaft large disc is rotatably connected inside the wind turbine unit body. An induction component is installed on the wind turbine unit body outside the rotating shaft large disc. A collision block is installed outside the rotating shaft large disc. The induction component includes a rectangular cylinder bolted to the wind turbine unit body. A rectangular protruding rod is slidably connected inside the rectangular cylinder. A pushing and pulling component connected to the rectangular protruding rod is installed inside the rectangular cylinder. An abutting block is installed at the end of the rectangular protruding rod. A limit switch that can contact the collision block is telescopically installed at the upper end of the abutting block.

[0008] Further, the push-pull assembly includes a support plate installed on one side inside the rectangular cylinder. A bearing seat is provided at the center of the support plate. A threaded rod passes through and is bearing-connected to the bearing seat. A threaded hole threadedly connected to the threaded rod is provided at one end of the inner side of the rectangular extension rod. The other side of the threaded rod is connected to a power assembly.

[0009] Further, the power assembly includes a first bevel gear fixedly connected to one side of the threaded rod. A rotating shaft is bearing-connected between the two side walls inside the rectangular cylinder. A second bevel gear meshing with the first bevel gear is provided on the rotating shaft. A motor drivingly connected to the rotating shaft is installed on the side wall of the rectangular cylinder.

[0010] Further, a protection groove is provided at the upper end of the abutting block. The limit switch is slidably arranged in the protection groove. A buffer spring is fixed between the limit switch and the protection groove.

[0011] Further, an indicator light is installed on the side wall of the rectangular cylinder. The limit switch is electrically connected to the hub locking system and the indicator light.

[0012] III. Beneficial Effects

[0013] The advantages of the present utility model compared with the prior art are as follows:

[0014] 1. By the telescopic movement of the rectangular extension rod of the push-pull assembly inside the rectangular cylinder, it is convenient to adjust the position of the limit switch, so that when it is not necessary to lock the hub of the wind turbine generator, the limit switch is located inside the rectangular cylinder for protection.

[0015] 2. The connection structure of the rectangular extension rod inside the rectangular cylinder is compact, and the supporting ability for the rectangular extension rod is strong, which is convenient for supporting the impacted limit switch and abutting block, and prolongs the service life of the induction assembly.

[0016] 3. When the striker impacts the limit switch, the limit switch drops into the protection groove under the buffering action of the buffer spring, so that the striker contacts the abutting block, thereby protecting the limit switch and prolonging the service life of the limit switch. Brief Description of the Drawings

[0017] Figure 1 is a schematic diagram of the use of the wind turbine generator hub position detection and locking device of the present utility model.

[0018] Figure 2 is a structural diagram of the induction assembly of the present utility model.

[0019] Figure 3 is a structural diagram of the push-pull assembly of the present utility model.

[0020] Figure 4 is a structural diagram of the abutting block of the present utility model.

[0021] As shown in the figure: 1. Wind turbine unit body; 2. Rotating shaft large plate; 3. Induction component; 4. Impact block; 5. Rectangular cylinder; 6. Rectangular extension rod; 601. Threaded hole; 7. Push-pull component; 8. Abutted block; 9. Limit switch; 10. Support plate; 11. Bearing seat; 12. Threaded rod; 13. First bevel gear; 14. Rotating shaft; 15. Second bevel gear; 16. Motor; 17. Buffer spring; 18. Indicator light. Specific embodiments

[0022] In order to make the technical problems, technical solutions and beneficial effects to be solved by the present utility model clearer, the following further details the present utility model in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present utility model and are not used to limit the present utility model.

[0023] Embodiment 1

[0024] Combined with the attached Figure 1 and the attached Figure 2 , an automatic locking device for a wind turbine hub includes a wind turbine unit body 1. A rotating shaft large plate 2 is rotatably connected inside the wind turbine unit body 1. An induction component 3 is installed on the wind turbine unit body 1 outside the rotating shaft large plate 2. An impact block 4 is installed outside the rotating shaft large plate 2. The induction component 3 includes a rectangular cylinder 5 bolted to the wind turbine unit body 1. A rectangular extension rod 6 is slidably connected inside the rectangular cylinder 5. A push-pull component 7 connected to the rectangular extension rod 6 is installed inside the rectangular cylinder 5. An abutted block 8 is installed at the end of the rectangular extension rod 6. A limit switch 9 that can contact the impact block 4 is telescopically installed at the upper end of the abutted block 8. The limit switch 9 is electrically connected to the hub locking system.

[0025] Combined with the above structure, when the wind turbine hub does not need to be locked, the limit switch 9 is located inside the rectangular cylinder 5 for protection. When the wind turbine hub needs to be locked, the limit switch 9 is pushed out of the rectangular cylinder 5 by the push-pull component 7. When the rotating shaft large plate 2 rotates to make the impact block 4 hit the limit switch 9, the hub locking system timely locks the position of the rotating shaft large plate 2 to realize the automatic locking of the wind turbine hub.

[0026] Combined with the attached Figure 3 , the push-pull component 7 includes a support plate 10 installed on one side inside the rectangular cylinder 5. A bearing seat 11 is provided at the center of the support plate 10. A threaded rod 12 passes through and is bearing-connected to the bearing seat 11. A threaded hole 601 threadedly connected to the threaded rod 12 is provided at one end of the inner side of the rectangular extension rod 6. The other side of the threaded rod 12 is connected to a power component.

[0027] Combined with the attached Figure 3, the power assembly includes a first bevel gear 13 fixedly connected to one side of the threaded rod 12. A rotating shaft 14 is connected between the two side walls of the rectangular cylinder 5 by bearings. A second bevel gear 15 meshing with the first bevel gear 13 is provided on the rotating shaft 14. A motor 16 drivingly connected to the rotating shaft 14 is installed on the side wall of the rectangular cylinder 5.

[0028] Combined with the above structure, when the push-pull assembly 7 is in use, the motor 16 drives the rotating shaft 14 to rotate, so that the second bevel gear 15 rotates, so that the first bevel gear 13 meshing with the second bevel gear 15 drives the threaded rod 12 to rotate, so that the rectangular extension rod 6 extends and retracts in the rectangular cylinder 5, facilitating the adjustment of the position of the limit switch 9; the connection structure of the rectangular extension rod 6 in the rectangular cylinder 5 is compact, and the supporting ability for the rectangular extension rod 6 is strong, facilitating the support of the impacted limit switch 9 and the abutting block 8.

[0029] Embodiment 2

[0030] On the basis of Embodiment 1, combined with the attached Figure 4 , a protection groove 801 is provided at the upper end of the abutting block 8. The limit switch 9 is slidably arranged in the protection groove 801. A buffer spring 17 is fixed between the limit switch 9 and the protection groove 801.

[0031] Combined with the above structure, when the striker 4 impacts the limit switch 9, the limit switch 9 drops into the protection groove 801 under the buffering action of the buffer spring 17, so that the striker 4 contacts the abutting block 8, thereby protecting the limit switch 9 and extending the service life of the limit switch 9.

[0032] Combined with the attached Figure 3 , an indicator light 18 is installed on the side wall of the rectangular cylinder 5. The limit switch 9 is electrically connected to the hub locking system and the indicator light 18. When the indicator light 18 is on, it indicates that the hub has been locked.

[0033] The specific usage method is as follows:

[0034] When it is necessary to lock the hub of the wind turbine generator, the motor 16 of the push-pull assembly 7 drives the rotating shaft 14 to rotate, so that the second bevel gear 15 rotates, so that the first bevel gear 13 meshing with the second bevel gear 15 drives the threaded rod 12 to rotate, so that the rectangular extension rod 6 extends out of the rectangular cylinder 5, that is, the limit switch 9 extends out; the rotation of the rotating shaft large disc 2 causes the striker 4 to impact the limit switch 9, and the limit switch 9 drops into the protection groove 801 under the buffering action of the buffer spring 17, so that the striker 4 contacts the abutting block 8, thereby protecting the limit switch 9 and extending the service life of the limit switch 9; at this time, the hub locking system locks the position of the rotating shaft large disc 2 in time, realizes the automatic locking of the hub of the wind turbine generator, and indicates that the hub has been locked by the lighting of the indicator light 18.

[0035] The above describes the present utility model and its implementation manners. Such description is not restrictive. What is shown in the drawings is only one of the implementation manners of the present utility model, and the actual structure is not limited thereto. In summary, if those of ordinary skill in the art are inspired by it and, without departing from the gist of the creation of the present utility model, design without creativity structural manners and embodiments similar to the technical solution, they shall fall within the protection scope of the present utility model.

Claims

1. An automatic locking device for a hub of a wind turbine generator, comprising a wind turbine generator body (1), wherein a rotating shaft disk (2) is rotatably connected to the wind turbine generator body (1), a sensing component (3) located outside the rotating shaft disk (2) is installed on the wind turbine generator body (1), and a collision block (4) is installed outside the rotating shaft disk (2), characterized in that: The induction component (3) comprises a rectangular tube (5) bolted on a wind turbine body (1), a rectangular extension rod (6) slidably connected inside the rectangular tube (5), a push-pull component (7) connected to the rectangular extension rod (6) installed inside the rectangular tube (5), an abutment block (8) installed at the end of the rectangular extension rod (6), and a limit switch (9) that can contact the collision block (4) is telescopically installed on the upper end of the abutment block (8).

2. The wind turbine hub automatic locking device according to claim 1, characterized in that: The push-pull assembly (7) comprises a support plate (10) installed on one side of a rectangular tube (5), a bearing seat (11) is provided at the center of the support plate (10), a threaded rod (12) passes through the bearing seat (11) and is bearing-connected, a threaded hole (601) threadedly connected to the threaded rod (12) is provided at one end of the inner side of the rectangular extension rod (6), and a power assembly is connected to the other side of the threaded rod (12).

3. The wind turbine hub automatic locking device according to claim 2, characterized in that: The power assembly comprises a bevel gear 1 (13) fixedly connected to one side of the threaded rod (12); a bearing is connected between two side walls inside the rectangular tube (5) and a rotating shaft (14); a bevel gear 2 (15) meshing with the bevel gear 1 (13) is provided on the rotating shaft (14); and a motor (16) drivingly connected to the rotating shaft (14) is installed on the side wall of the rectangular tube (5).

4. The wind turbine hub automatic locking device according to claim 1, characterized in that: A protective groove (801) is provided at the upper end of the abutment block (8), the limit switch (9) is slidably arranged in the protective groove (801), and a buffer spring (17) is fixed between the limit switch (9) and the protective groove (801).

5. The wind turbine hub automatic locking device according to claim 1, characterized in that: An indicator light (18) is installed on the side wall of the rectangular tube (5), and the limit switch (9) is electrically connected to the wheel hub locking system and the indicator light (18).

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