Wind power hydraulic wind wheel lock

Abstract

The utility model discloses a wind power hydraulic type wind wheel lock which comprises a fixing plate fixed on the outer side of a main shaft bearing, an operation plate is movably arranged on the fixing plate towards the direction of a hub, and a hydraulic part is arranged between the operation plate and the fixing plate. The preassembling assembly and the limiting assembly are arranged in the hub; the preassembling assembly comprises a preassembling hole, a first limiting ring is arranged in the preassembling hole, a second limiting ring is movably arranged in the first limiting ring, and the inner side face of the first limiting ring and the outer side face of the second limiting ring are both in a sawtooth shape. The inner side of the second limiting ring is fixedly connected with a hollow pin shaft with one open end. The limiting assembly is located between the preassembling assembly and the operation plate. According to the utility model, the preassembled component is preassembled in the hub, so that the wind wheel can be fixed only by inserting the limiting teeth into the preassembled component through the operation of the motor when the wind wheel is subsequently locked, the operation is simple, the wind wheel is not easy to fall off after being used for a long time, and the stability is strong.

Description

Technical Field

[0001] This utility model relates to the field of wind power equipment technology, specifically to a wind turbine hydraulic lock. Background Technology

[0002] Wind power equipment refers to a complete set of devices used to convert wind energy into electrical energy, mainly including wind turbine generators, support structures, electrical systems, and control systems. With the increasing global demand for renewable energy, wind power equipment has become one of the core pieces of equipment in the clean energy sector. The core components of a wind turbine generator include blades, hub, gearbox, generator, yaw system, and pitch system, in addition to the support structure and electrical and control systems.

[0003] A wind turbine lock is a safety device in wind turbine generator sets, primarily used to lock the turbine rotor during maintenance or repair, preventing it from rotating due to external wind power or mechanical inertia, thus ensuring the safety of maintenance personnel. Locking the rotor during prolonged shutdowns can also reduce fatigue damage to the transmission system. Existing wind turbine locks commonly use physical locking pins inserted into locking holes on the hub or main shaft. However, in actual use, due to the weight and inertia of the wind turbine, the locking pin and locking hole may experience relative displacement under stress, leading to loosening over time. This makes them only suitable for short-term operations and poses potential risks. Utility Model Content

[0004] This invention aims to solve the aforementioned technical problem that, due to the gravity and inertia of the wind turbine unit, the locking pin and the locking hole will undergo relative displacement under force, which will cause loosening over time. The invention provides a wind turbine hydraulic lock.

[0005] To solve the above-mentioned technical problems, the technical solution provided by this utility model is as follows: a wind turbine hydraulic lock, comprising a fixing plate fixed to the outside of the main shaft bearing, an operating plate being movable towards the hub of the fixing plate, and a hydraulic component being provided between the operating plate and the fixing plate; further comprising:

[0006] The pre-installed components in the wheel hub include a pre-installation hole, a limiting ring one is provided in the pre-installation hole, a limiting ring two is provided within the limiting ring one, the inner side of the limiting ring one and the outer side of the limiting ring two are both serrated; a hollow pin with one open end is fixed to the inner side of the limiting ring two.

[0007] A limiting assembly is located between the pre-assembled assembly and the operating panel. It includes a motor mounted on the operating panel, a hollow cylinder located on the side of the motor away from the operating panel and outside the motor shaft, an internally threaded cylinder fixed to the inner end of the hollow cylinder, a threaded rod rotatably mounted inside the internally threaded cylinder, and the end of the threaded rod connected to the motor shaft of the motor; a plurality of limiting teeth are tapered on the outer side of the threaded rod, and a limiting groove is provided on the inner side of the limiting ring to accommodate the limiting teeth; an arc-shaped groove is provided on the hollow cylinder to accommodate the limiting teeth.

[0008] Furthermore, the fixed plate is provided with support rods at all four corners, the operating plate is provided with through holes that can accommodate the support rods, and the end of the support rod is provided with a limiting plate larger than the through hole.

[0009] Furthermore, the end of the pin has a smooth transition.

[0010] Furthermore, the outer side of the threaded rod is threadedly connected to a limiting frustum, the opposite sides of the limiting teeth all correspond to the outer side of the limiting frustum, and each is provided with a limiting slide bar, and the outer side of the limiting frustum is provided with a limiting slide groove that can slide and connect with the limiting slide bar.

[0011] Furthermore, the longitudinal section of both the limiting slide bar and the limiting slide groove is dovetail-shaped.

[0012] Furthermore, in the initial state, i.e. when the motor is not operating, the limit teeth are located in the arc-shaped groove but do not protrude from the arc-shaped groove.

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

[0014] By pre-installing components inside the hub, when locking the wind turbine, it is only necessary to insert the limiting teeth into the pre-installed components through motor operation to achieve fixation. The operation is simple, it is not easy to fall out after long-term use, and it has strong stability.

[0015] The pre-installed components are modular, making them easy to remove and maintain when worn. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of the structure of this utility model.

[0017] Figure 2 This is a partial structural schematic diagram of this utility model.

[0018] Figure 3 This is a schematic diagram of the pre-assembled component structure of this utility model.

[0019] Figure 4 This is a schematic diagram of the structure of limiting ring one and limiting ring two of this utility model.

[0020] Figure 5 This is a schematic diagram of the limiting component structure of this utility model.

[0021] As shown in the figure: 1. Fixed plate, 2. Operating plate, 3. Hydraulic component, 4. Support rod, 5. Limiting ring one, 6. Limiting ring two, 7. Pin, 8. Motor, 9. Hollow cylinder, 10. Internal threaded cylinder, 11. Threaded rod, 12. Limiting tooth, 13. Limiting groove, 14. Limiting frustum, 15. Limiting slide bar, 16. Limiting slide groove, 17. Arc groove. Detailed Implementation

[0022] The present invention will now be described in further detail with reference to the accompanying drawings.

[0023] Example 1, in conjunction with Appendix Figure 1 , 2 A wind turbine hydraulic lock includes a fixed plate 1 fixed to the outside of the main shaft bearing, an operating plate 2 that moves towards the hub of the fixed plate 1, and a hydraulic component 3 between the operating plate 2 and the fixed plate 1; the hydraulic component 3 can drive the operating plate 2 to move forward on the basis of the fixed plate 1.

[0024] Based on the above, support rods 4 are provided on the fixed plate 1 at all four corners, and the operating plate 2 is provided with through holes that can accommodate the support rods 4. The end of the support rod 4 is provided with a limiting plate larger than the through hole. The support rods 4 can improve the stability of the movement of the operating plate 2 and provide additional support for the hydraulic components 3, thus distributing the force.

[0025] Combined with appendix Figure 3 , 4 It also includes a pre-installed component inside the wheel hub; the pre-installed component includes a pre-installation hole, in which a limiting ring 5 is fixedly installed, and a limiting ring 6 is movable inside the limiting ring 5, so that the limiting ring 6 can be removed when needed; the inner side of the limiting ring 5 and the outer side of the limiting ring 6 are both serrated, so that the limiting ring 5 and the limiting ring 6 mutually limit each other and cannot deflect; a hollow pin 7 with one open end is fixed to the inner side of the limiting ring 6, and the end of the pin 7 is smoothly transitioned to reduce the end area and facilitate movement in and out of the pre-installation hole;

[0026] Combined with appendix Figure 1 , 2 5. It also includes a limiting component; located between the pre-assembled component and the operation plate 2, including a motor 8 provided on the operation plate 2, a hollow cylinder 9 provided on the side of the motor 8 away from the operation plate 2 and located outside the motor shaft, so that the hollow cylinder 9 is fixed on the motor 8 and will not rotate with the rotation of the motor shaft; an internal threaded cylinder 10 is fixedly connected to the inner end of the hollow cylinder 9, and a threaded rod 11 is rotatably provided inside the internal threaded cylinder 10. The end of the threaded rod 11 is connected to the motor shaft of the motor 8, so that the threaded rod 11 can rotate under the support of the internal threaded cylinder 10. It is worth mentioning that the part where the end of the threaded rod 11 intersects with the internal threaded cylinder 10 is not threaded.

[0027] Based on the above structure, the outer side of the threaded rod 11 is provided with several limiting teeth 12, and the outer side of the threaded rod 11 is threadedly connected to a limiting frustum 14. The opposite sides of the limiting teeth 12 all correspond to the outer side of the limiting frustum 14, and each is provided with a limiting slide bar 15. The outer side of the limiting frustum 14 is provided with a limiting groove 16 that can slide with the limiting slide bar 15, so that the limiting teeth 12 can move on the outer side of the limiting frustum 14. Since the outer side of the limiting frustum 14 is a slope, the limiting teeth 12 will gradually extend outward or retract inward during the movement. The longitudinal section of the limiting slide bar 15 and the limiting groove 16 are both dovetail-shaped, so they are not easy to fall out during sliding.

[0028] Based on the above structure, the inner side of the limiting ring 6 is provided with a limiting groove 13 that can accommodate the limiting tooth 12; the hollow cylinder 9 is provided with an arc-shaped groove 17 that can accommodate the limiting tooth 12; in the initial state, that is, when the motor 8 is not working, the limiting tooth 12 is located in the arc-shaped groove 17 but does not protrude from the arc-shaped groove 17; thus, when the limiting tooth 12 is located in the arc-shaped groove 17, the hollow cylinder 9 and the pin 7 do not contact each other, that is, they are not locked; when the limiting tooth passes through the arc-shaped groove 17 and enters the limiting groove 13, the hollow cylinder 9 and the pin 7 are limited, locking is completed, and there is mechanical force, making it difficult to come out.

[0029] The present invention and its embodiments have been described above. This description is not restrictive, and the accompanying drawings are only one embodiment of the present invention; the actual structure is not limited thereto. In conclusion, if those skilled in the art are inspired by this description and design similar structures and embodiments without departing from the inventive spirit of the present invention, such designs should fall within the protection scope of the present invention.

Claims

1. A wind turbine hydraulic lock, characterized in that: The system includes a fixed plate (1) fixed to the outside of the main shaft bearing, an operating plate (2) movable toward the hub direction of the fixed plate (1), and a hydraulic component (3) between the operating plate (2) and the fixed plate (1); it also includes: The pre-installed components in the wheel hub include a pre-installation hole, a limiting ring one (5) is provided in the pre-installation hole, a limiting ring two (6) is provided inside the limiting ring one (5), the inner side of the limiting ring one (5) and the outer side of the limiting ring two (6) are both sawtooth-shaped; a hollow pin (7) with one open end is fixed to the inner side of the limiting ring two (6); A limiting component is located between the pre-assembled component and the operating plate (2), including a motor (8) provided on the operating plate (2), a hollow cylinder (9) provided on the side of the motor (8) away from the operating plate (2) and outside the motor shaft, an internal threaded cylinder (10) is fixedly connected to the inner end of the hollow cylinder (9), a threaded rod (11) is rotatably provided inside the internal threaded cylinder (10), and the end of the threaded rod (11) is connected to the motor shaft of the motor (8); a plurality of limiting teeth (12) are provided on the outer side of the threaded rod (11), and a limiting groove (13) is provided on the inner side of the limiting ring (6) to accommodate the limiting teeth (12); an arc groove (17) is provided on the hollow cylinder (9) to accommodate the limiting teeth (12).

2. The wind turbine hydraulic lock according to claim 1, characterized in that: The fixed plate (1) is provided with support rods (4) at all four corners. The operating plate (2) is provided with through holes that can accommodate the support rods (4). The end of the support rod (4) is provided with a limiting plate larger than the through hole.

3. A wind turbine hydraulic lock according to claim 1, characterized in that: The end of the pin (7) has a smooth transition.

4. A wind turbine hydraulic lock according to claim 1, characterized in that: The threaded rod (11) is threadedly connected to a limiting frustum (14) on the outside. The opposite sides of the limiting teeth (12) all correspond to the outer side of the limiting frustum (14) and are all provided with limiting slide bars (15). The limiting frustum (14) is provided with a limiting groove (16) that can slide with the limiting slide bar (15) on the outside.

5. A wind turbine hydraulic lock according to claim 4, characterized in that: The longitudinal sections of the limiting slide bar (15) and the limiting slide groove (16) are both dovetail-shaped.

6. A wind turbine hydraulic lock according to claim 1, characterized in that: In the initial state, i.e. when the motor (8) is not in operation, the limiting tooth (12) is located in the arc groove (17) but does not protrude from the arc groove (17).

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