Portable hub locking tool for wind turbine generator

Abstract

The utility model provides a portable hub locking tool for a wind turbine generator system, which comprises a plurality of locking blocks, each locking block is provided with at least two bolt holes, the bolt holes are used for accommodating connecting bolts of a hub of the wind turbine generator system, the bolt holes of the locking blocks are sleeved on the connecting bolts of the hub of the wind turbine generator system, and the locking blocks are used for locking the hub of the wind turbine generator system. The multiple locking blocks are sequentially installed on the wind turbine generator hub in the circumferential direction of the wind turbine generator hub, and the locking block at the head end and the locking block at the tail end abut against the main rack so as to limit rotation of the wind turbine generator hub. According to the scheme, the locking tool is reasonable in structure, composed of the multiple locking pieces with light weight and convenient to transport, when the hub of the wind turbine generator needs to be locked, the multiple locking pieces are combined into the locking tool, locking of the hub of the wind turbine generator is achieved by limiting the connecting bolts of the hub of the wind turbine generator, additional lifting points do not need to be arranged, mounting and dismounting are convenient, and the working efficiency is improved. And meanwhile, good universality is achieved, and locking can be achieved by adopting different numbers of locking pieces according to different machine types.

Description

Technical Field

[0001] The utility model relates to the technical field of wind turbine maintenance tools, in particular to a portable hub locking tool for a wind turbine. Background Art

[0002] Existing doubly-fed asynchronous wind turbines feature a speed-increasing gearbox structure. Their drive chain includes a rotor, main shaft, and coupling. The drive chain converts the wind's kinetic energy into mechanical energy for rotor rotation. The main shaft then transmits torque to the gearbox, which then increases the speed. After the gearbox accelerates, the torque is transferred to the generator through the coupling for power generation. Each component in this drive chain (main shaft, gearbox, and coupling) is independent of the others. Specific tooling is required for replacing damaged components. The rotor must be locked before the brake disc, hydraulic caliper, and coupling can be replaced.

[0003] When using this tooling, it is necessary to make a hanging point on the wind turbine, hang the tooling on the wind turbine, and then install and lock the wind wheel. This is inconvenient to use and has high labor costs.

[0004] Improvements to the existing technology are needed. Utility Model Content

[0005] The technical problem to be solved by the utility model is to provide a portable hub locking tool for a wind turbine generator set which has a reasonable structure and is easy to transport.

[0006] In order to solve the above technical problems, the technical solution adopted by the present invention is: a portable hub locking tool for a wind turbine, comprising a plurality of locking blocks, each locking block is provided with at least two bolt holes, the bolt holes are used to accommodate the connecting bolts of the wind turbine hub, the bolt holes of the locking blocks are sleeved on the connecting bolts of the wind turbine hub, and the plurality of locking blocks are sequentially installed on the wind turbine hub along the circumferential direction, and the locking block at the head end and the locking block at the end end abut against the main frame to limit the rotation of the wind turbine hub.

[0007] Furthermore, the locking block is provided with a weight-reducing structure, and the weight-reducing structure is a groove provided on the locking block.

[0008] Furthermore, the grooves are provided at both ends of the locking block.

[0009] Furthermore, a handle is provided in the groove.

[0010] Furthermore, the bolt hole is a hexagonal through hole, and the hexagonal through hole is adapted to the size of the connecting bolt.

[0011] Furthermore, the bolt hole is a circular through hole.

[0012] Furthermore, a cylindrical bolt adapter is provided in the bolt hole, and the bolt adapter is provided with a hexagonal through hole adapted to the size of the connecting bolt.

[0013] Furthermore, the locking block is an arc-shaped structure.

[0014] Furthermore, the locking block is a trapezoidal structure.

[0015] Furthermore, it also includes an abutment piece, which is arranged between the locking block and the main frame.

[0016] The beneficial effect of the present invention is that it provides a portable hub locking tool for wind turbines. The tool has a reasonable structure and is composed of multiple lightweight locking parts. It is easy to transport. When the hub of the wind turbine needs to be locked, the multiple locking parts are combined into a locking tool. The hub of the wind turbine is locked by limiting the connecting bolts of the hub of the wind turbine. There is no need to set additional hanging points. It is easy to install and disassemble. At the same time, it has good versatility. Different numbers of locking parts can be used for different models to achieve locking. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] The specific structure of the utility model is described in detail below with reference to the accompanying drawings:

[0018] Figure 1 This is a schematic structural diagram of the locking block of the utility model;

[0019] Figure 2 This is a structural diagram of an embodiment of the locking block of the utility model;

[0020] Figure 3 This is a structural schematic diagram of an embodiment of the bolt hole of the locking block of the utility model;

[0021] Figure 4 This is a structural schematic diagram of another embodiment of the bolt hole of the locking block of the utility model;

[0022] Figure 5 This is a structural schematic diagram of a third embodiment of the bolt hole of the locking block of the present utility model;

[0023] Figure 6 To adopt Figure 1 The locking block combination is a structural diagram of the locking tooling;

[0024] Figure 7 To adopt Figure 1 The locking block combination is a front structural diagram of the locking tool;

[0025] Figure 8 This is a structural diagram of another embodiment of the locking block of the present invention;

[0026] Figure 9 To adopt Figure 8 The locking block combination is a front structural diagram of the locking tool;

[0027] 1-locking block; 2-bolt hole; 21-bolt adapter; 211-hexagonal through hole; 3-groove; 4-handle. DETAILED DESCRIPTION

[0028] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the embodiments described are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0029] In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise" and the like to indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present invention.

[0030] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features being referred to. Thus, features defined as "first" or "second" may explicitly or implicitly include one or more features. In the description of this utility model, "plurality" means two or more, unless otherwise specifically defined.

[0031] In this utility model, unless otherwise specified or limited, the terms "installed," "connected," "connect," "fixed," etc. should be understood in a broad sense. For example, they can refer to connection, detachable connection, or integration; mechanical connection or electrical connection; direct connection or indirect connection through an intermediate medium; internal communication between two components or interaction between two components. For those skilled in the art, the specific meanings of the above terms in this utility model can be understood according to specific circumstances.

[0032] In the present invention, unless otherwise expressly specified or limited, a first feature being "above" or "below" a second feature may include the first and second features being in direct contact, or may include the first and second features being in contact not directly but through another feature between them. Moreover, a first feature being "above," "above," and "above" a second feature may include the first feature being directly above or obliquely above the second feature, or may simply mean that the first feature is higher in level than the second feature. A first feature being "below," "below," and "below" a second feature may include the first feature being directly below or obliquely below the second feature, or may simply mean that the first feature is lower in level than the second feature.

[0033] In the description of this specification, the reference terms "one embodiment", "some embodiments", "example", "specific example", or "some examples" mean that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the present invention. In this specification, the schematic expressions of the above terms should not be understood as necessarily referring to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described can be combined in any one or more embodiments or examples in a suitable manner. In addition, those skilled in the art can combine and combine different embodiments or examples described in this specification.

[0034] Example

[0035] See also Figures 1 to 9 This embodiment provides a portable hub locking tool for a wind turbine, comprising a plurality of locking blocks 1, each locking block 1 being provided with at least two bolt holes 2, the bolt holes 2 being used to accommodate connecting bolts of the wind turbine hub, the bolt holes 2 of the locking blocks 1 being sleeved on the connecting bolts of the wind turbine hub, and the plurality of locking blocks 1 being sequentially installed on the wind turbine hub along the circumferential direction, the locking blocks at the head end and the locking blocks at the end end being in contact with the main frame to limit the rotation of the wind turbine hub.

[0036] In this embodiment, the wind turbine includes a wind rotor, a hub, a main shaft, a gear box and a generator. The wind rotor is connected to the hub. The hub is fixedly connected to one end of the main shaft by a plurality of connecting bolts arranged along the axial direction of the hub. The other end of the main shaft is connected to the generator through a gear box. The main shaft is rotatably arranged on the main frame. When the wind turbine needs to be inspected and repaired, in order to ensure the safety of the maintenance personnel, the wind rotor needs to be in a stationary locked state.

[0037] A locking fixture with bolt holes 2 is fitted over the bolts connecting the hub and the main shaft. By abutting the main frame at both ends of the locking fixture, the hub's rotation is restricted, thereby locking the wind rotor. To facilitate installation, removal, and transportation, the locking fixture consists of multiple locking blocks 1. Each locking block 1 has at least two bolt holes 2, and the spacing between adjacent bolt holes 2 matches the spacing between adjacent connecting bolts. The locking block 1 is installed by fitting its bolt holes 2 over the hub's connecting bolts.

[0038] When the hub needs to be locked, multiple locking blocks 1 are installed to the wind turbine hub in sequence along the circumference of the wind turbine hub to form a semi-arc-shaped locking fixture, wherein the two ends of the semi-arc-shaped locking fixture abut against the main frame, thereby limiting the rotation of the wind turbine hub and realizing the locking function.

[0039] When the hub needs to be unlocked, the multiple locking blocks 1 are removed from the hub of the wind turbine generator set one by one and can be taken away by maintenance personnel, which is very convenient.

[0040] The locking fixture composed of multiple locking blocks 1 is easy to disassemble, light in weight, can be transported in blocks, and is easy to carry. There is no need to make lifting points on the wind turbine. For different models, the number of locking blocks 1 can be changed without remaking, which greatly reduces the maintenance cost of the wind turbine.

[0041] In one embodiment, the structure of the locking block 1 is improved to further reduce the weight of the locking block 1 and achieve a more portable effect. Specifically, the locking block 1 is provided with a weight-reducing structure, which is a groove 3 provided on the locking block 1.

[0042] In this embodiment, by providing the groove 3 on the locking block 1 , the structural strength of the locking block 1 can be ensured while reducing the weight of the locking block 1 , making it easier for maintenance personnel to carry the locking block 1 .

[0043] Preferably, the grooves 3 are provided at both ends of the locking block 1. Two grooves 3 are provided at each end of the locking block 1, and the two grooves 3 are respectively provided on opposite sides of the locking block 1. The end face of the locking block 1 is in an "I" shape or an "H" shape, thereby ensuring the structural strength of the locking block 1 while effectively reducing the weight of the locking block 1.

[0044] Similarly, the groove 3 may also be provided on other side surfaces of the locking block 1 , and this embodiment does not impose any further limitation thereto.

[0045] In one embodiment, the structure of the locking block 1 is improved to facilitate transportation of the locking block 1. Specifically, a handle 4 is provided in the groove 3.

[0046] In this embodiment, in order to facilitate the installation, removal and transportation of the locking block 1, a handle 4 is provided in the groove 3, which facilitates the transportation of the locking block 1 by maintenance personnel. Screw holes can be provided on the two side walls of the groove 3. By inserting screws into the screw holes, a force-bearing handle 4 can be formed in the groove 3, which facilitates the movement of the locking block 1 by maintenance personnel.

[0047] In one embodiment, the structure of the bolt hole 2 is improved to ensure a stable connection between the locking block 1 and the connecting bolt. Specifically, the bolt hole 2 is a hexagonal through hole that matches the size of the connecting bolt.

[0048] In this embodiment, the bolt hole 2 is set as a hexagonal through hole, and the hexagonal through hole is adapted to the size of the connecting bolt, so that the locking block 1 can be stably mounted on the connecting screw, avoiding shaking between the locking block 1 and the hub of the wind turbine component, resulting in unstable locking and damage to the wind turbine component.

[0049] In one embodiment, the structure of the bolt hole 2 is improved to ensure a stable connection between the locking block 1 and the connecting bolt. Specifically, the bolt hole 2 is a circular through hole.

[0050] In this embodiment, in order to ensure the compatibility of the bolt hole 2 and the connecting bolt, the bolt hole 2 is a circular through hole, and the inner diameter of the circular bolt hole 2 is adapted to the outer diameter of the connecting bolt, which can also prevent shaking between the locking block 1 and the hub of the wind turbine component, resulting in unstable locking and effectively avoiding damage to the wind turbine component.

[0051] In one embodiment, the structure of the bolt hole 2 is improved to allow the locking block 1 to better adapt to the connecting bolt. Specifically, a cylindrical bolt adapter 21 is provided in the bolt hole 2, and the bolt adapter 21 has a hexagonal through hole 211 that is adapted to the size of the connecting bolt.

[0052] In this embodiment, in order to avoid the angle of the connecting bolt being inconsistent with the preset angle of the bolt hole 2 when installing the connecting bolt, which makes the locking block 1 unable to be installed and used, a cylindrical bolt adapter 21 is provided in the bolt hole 2, and the bolt adapter 21 is provided with a hexagonal through hole 211 adapted to the size of the connecting bolt. The bolt adapter 21 can be rotated in the bolt hole 2 so that the direction of the hexagonal through hole 211 of the bolt adapter 21 is consistent with the angle of the connecting bolt, thereby ensuring that the locking block 1 can be smoothly installed on the hub of the wind turbine component, and at the same time avoiding shaking between the locking block 1 and the hub of the wind turbine component, resulting in unstable locking, and effectively avoiding damage to the wind turbine component.

[0053] In one embodiment, the structure of the locking block 1 is improved to ensure a compact structure of the locking fixture. Specifically, the locking block 1 is an arc-shaped structure.

[0054] In this embodiment, the arc-shaped locking block 1 can form an arc-shaped semi-annular locking fixture after the locking block 1 is installed on the wind turbine hub, thereby achieving stable positioning of the wind turbine hub and achieving a good locking effect.

[0055] Similarly, the locking block 1 may also be a trapezoidal structure. After the locking block 1 is installed on the wind turbine hub, a regular polygonal semi-annular locking fixture is formed to achieve stable positioning of the wind turbine hub and achieve a good locking effect.

[0056] In one embodiment, the structure of the locking fixture is improved to prevent the locking block from damaging the main frame. Specifically, it also includes an abutment sheet, which is arranged between the locking block and the main frame.

[0057] In this embodiment, in order to avoid the locking block from being unable to lock the wind wheel due to the gap between the locking block and the main frame, an abutment plate is also included. By placing the abutment plate between the locking block and the main frame to fill the gap between the locking block and the main frame, the locking effect of the locking tool on the wind wheel can be ensured.

[0058] In addition, the abutment piece can also prevent the locking block from damaging the paint surface of the main frame.

[0059] From the above description, it can be seen that the beneficial effect of the utility model is that it provides a portable hub locking tool for wind turbines. The tool has a reasonable structure and is composed of multiple lightweight locking parts. It is easy to transport. When the wind turbine hub needs to be locked, multiple locking parts are combined into a locking tool. The wind turbine hub is locked by limiting the connecting bolts of the wind turbine hub. There is no need to set additional lifting points. It is easy to install and disassemble. At the same time, it has good versatility. Different numbers of locking parts can be used for different models to achieve locking.

[0060] It is easy for those skilled in the art to understand that the above embodiments can be freely combined and superimposed without conflict.

[0061] The above description is merely an embodiment of the present invention and does not limit the patent scope of the present invention. Any equivalent structure or equivalent process transformation made using the contents of the present invention specification and drawings, or directly or indirectly applied in other related technical fields, are also included in the patent protection scope of the present invention.

Claims

1. A portable hub locking tool for a wind turbine, characterized by: It includes multiple locking blocks, each locking block is provided with at least two bolt holes, the bolt holes are used to accommodate the connecting bolts of the wind turbine hub, the bolt holes of the locking blocks are sleeved on the connecting bolts of the wind turbine hub, and the multiple locking blocks are sequentially installed on the wind turbine hub along the circumferential direction, and the locking block at the head end and the locking block at the end end abut against the main frame to limit the rotation of the wind turbine hub.

2. The portable hub locking tool for wind turbines according to claim 1, characterized in that: The locking block is provided with a weight-reducing structure, and the weight-reducing structure is a groove provided on the locking block.

3. The portable hub locking tool for wind turbines according to claim 2, characterized in that: The grooves are arranged at both ends of the locking block.

4. The portable hub locking tool for a wind turbine according to claim 3, characterized in that: A handle is provided in the groove.

5. The portable hub locking tool for a wind turbine according to claim 1, characterized in that: The bolt hole is a hexagonal through hole, and the size of the hexagonal through hole is adapted to the size of the connecting bolt.

6. The portable hub locking tool for a wind turbine according to claim 1, characterized in that: The bolt hole is a circular through hole.

7. The portable hub locking tool for a wind turbine according to claim 6, characterized in that: A cylindrical bolt adapter is provided in the bolt hole, and the bolt adapter is provided with a hexagonal through hole that is adapted to the size of the connecting bolt.

8. The portable hub locking tool for a wind turbine according to claim 1, characterized in that: The locking block is an arc-shaped structure.

9. The portable hub locking tool for a wind turbine according to claim 1, characterized in that: The locking block is a trapezoidal structure.

10. The portable hub locking tool for a wind turbine according to claim 1, characterized in that: It also includes an abutment piece, which is arranged between the locking block and the main frame.

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