Main bearing hoisting device of wind generating set

Abstract

The utility model discloses a hoisting device for a main bearing of a wind generating set. The hoisting device comprises a cross-shaped hoisting bracket, a plurality of hoisting lugs arranged on the cross-shaped hoisting bracket, and four hoisting hook components arranged at the end parts of the cross-shaped hoisting bracket in a one-to-one correspondence manner, strip-shaped grooves are respectively formed in the end parts of the cross-shaped hoisting bracket; the strip-shaped grooves are formed in the horizontal direction of the cross-shaped hoisting support. A plurality of limiting grooves are formed in the lower part of the strip-shaped groove; the hoisting hook assembly is arranged in the limiting groove; and the lower part of the hoisting hook assembly is hung on the main bearing. By means of the scheme, the device has the advantages of being simple in structure, flexible, reliable and the like, and has high practical value and popularization value in the technical field of wind generating set maintenance.

Description

Technical Field

[0001] This utility model relates to the field of wind turbine maintenance technology, and in particular to a wind turbine main bearing hoisting device. Background Technology

[0002] The bearings on the main shaft of a wind turbine have diameters ranging from several meters to tens of meters and weigh from several tons to tens of tons. The bearings are connected to the main shaft using an interference fit. Currently, existing technologies for main bearing installation mainly include mechanical installation methods (press-in and hammer-in), heat-fitting methods, cold-fitting methods, and special installation methods (nut fixing and tapered sleeve installation). Figure 1 As shown, in the hot-fitting process, the main bearing 100 is placed on the bearing support frame 200 and heated by a heating coil, which is applicable to heating main bearings 100 of different diameters. However, hoisting the main bearing 100 onto the bearing support frame 200 before heating and hoisting it off the bearing support frame 200 after heating is a challenge. Currently, there is no corresponding hoisting equipment in the existing technology.

[0003] Therefore, there is an urgent need to propose a simple, flexible, and reliable hoisting device for the main bearing of wind turbine generator sets. Utility Model Content

[0004] To address the aforementioned problems, the purpose of this utility model is to provide a hoisting device for the main bearing of a wind turbine generator set. The technical solution adopted by this utility model is as follows:

[0005] A wind turbine main bearing hoisting device is disclosed for hoisting the main bearing onto or off a bearing support frame. The device includes a cross-shaped hoisting bracket, several lifting lugs on the bracket, and four hoisting hook assemblies corresponding to the ends of the bracket. Each end of the cross-shaped hoisting bracket has a strip-shaped groove arranged horizontally along the bracket. Several limiting grooves are located at the bottom of the strip-shaped grooves. The hoisting hook assemblies are positioned within the limiting grooves, and their lower parts are attached to the main bearing.

[0006] Furthermore, the lifting hook assembly includes a first hook and a second hook arranged in parallel and having the same structure, an upper crossbeam disposed between the top of the first hook and the second hook, and several support beams disposed between the first hook and the second hook; the upper crossbeam is sleeved in a limiting groove; the lower parts of the first hook and the second hook are hung on the main bearing.

[0007] Furthermore, a U-shaped pad is provided on the lower inner side of the first hook and the second hook respectively.

[0008] Furthermore, the limiting grooves are evenly spaced at the bottom of the strip groove.

[0009] Compared with the prior art, the present invention has the following beneficial effects:

[0010] (1) This utility model sets up a cross-shaped hoisting bracket and sets a strip groove and a limiting groove on the cross-shaped hoisting bracket to facilitate the adjustment of the position of the hoisting hook assembly to adapt to the hoisting of main bearings of different diameters, which is flexible and reliable.

[0011] (2) This utility model uses a first hook and a second hook with the same structure, and sets an upper crossbeam and a support beam between the first hook and the second hook. The upper crossbeam can slide along the strip groove and is placed in the limiting groove to ensure that its adjustment is flexible and reliable. In addition, this utility model uses the support beam to support the first hook and the second hook to ensure reliable support.

[0012] In summary, this utility model has the advantages of simple structure, flexibility and reliability, and has high practical and promotional value in the field of wind turbine maintenance technology. Attached Figure Description

[0013] To more clearly illustrate the technical solutions of the embodiments of this utility model, the drawings used in the embodiments will be briefly introduced below. It should be understood that the following drawings only show some embodiments of this utility model and should not be regarded as a limitation on the scope of protection. For those skilled in the art, other related drawings can be obtained based on these drawings without creative effort.

[0014] Figure 1 Diagram showing the heating installation of the main bearing.

[0015] Figure 2 This is a schematic diagram of the structure of this utility model.

[0016] Figure 3 This is a schematic diagram of the cross-shaped hoisting bracket of this utility model.

[0017] Figure 4 This is a schematic diagram of the lifting hook assembly of this utility model.

[0018] In the above figures, the component names corresponding to the reference numerals are as follows:

[0019] 100. Main bearing; 200. Bearing support frame; 1. Cross-shaped lifting bracket; 2. Lifting lug; 3. Lifting hook assembly; 11. Strip groove; 12. Limiting groove; 31. First hook; 32. Second hook; 33. Upper crossbeam; 34. Support beam; 35. Pad block. Detailed Implementation

[0020] To make the objectives, technical solutions, and advantages of this application clearer, the present invention will be further described below with reference to the accompanying drawings and embodiments. The embodiments of this utility model include, but are not limited to, the following embodiments. All other embodiments obtained by those skilled in the art based on the embodiments in this application without inventive effort are within the scope of protection of this application.

[0021] In this embodiment, the term "and / or" is merely a description of the relationship between related objects, indicating that there can be three relationships. For example, A and / or B can represent three situations: A exists alone, A and B exist simultaneously, and B exists alone.

[0022] The terms "first" and "second," etc., used in the specification and claims of this embodiment are used to distinguish different objects, not to describe a specific order of objects. For example, "first target object" and "second target object," etc., are used to distinguish different target objects, not to describe a specific order of target objects.

[0023] In the embodiments of this application, the terms "exemplary" or "for example" are used to indicate that something is an example, illustration, or description. Any embodiment or design that is described as "exemplary" or "for example" in the embodiments of this application should not be construed as being more preferred or advantageous than other embodiments or design. Specifically, the use of the terms "exemplary" or "for example" is intended to present the relevant concepts in a specific manner.

[0024] In the description of the embodiments in this application, unless otherwise stated, "multiple" means two or more. For example, multiple processing units means two or more processing units; multiple systems means two or more systems.

[0025] like Figures 1 to 4 As shown, this embodiment provides a wind turbine generator main bearing hoisting device, which hoists the main bearing 100 onto the bearing support frame 200, or hoists the main bearing 100 out of the bearing support frame 200.

[0026] Here, the wind turbine main bearing hoisting device includes a cross-shaped hoisting bracket 1, several lifting lugs 2 mounted on the cross-shaped hoisting bracket 1, and four hoisting hook assemblies 3 corresponding to the ends of the cross-shaped hoisting bracket 1. Each end of the cross-shaped hoisting bracket 1 has a strip-shaped groove 11 arranged horizontally along the cross-shaped hoisting bracket 1. Furthermore, several limiting grooves 12 are spaced apart at the lower part of each strip-shaped groove 11. The upper part of the hoisting hook assembly 3 can slide along the strip-shaped groove 11 and be placed into the limiting groove 12 to accommodate the hoisting of main bearings 100 of different diameters.

[0027] In this embodiment, the lifting hook assembly 3 is annularly arrayed and fastened to the main bearing 100. It includes a first hook 31 and a second hook 32 arranged in parallel and having the same structure, an upper crossbeam 33 positioned between the tops of the first hook 31 and the second hook 32, and several support beams 34 positioned between the first hook 31 and the second hook 32. A U-shaped pad 35 is provided on the lower inner side of each of the first hook 31 and the second hook 32. The upper crossbeam 33 in this embodiment is cylindrical and fits within the limiting groove 12. When the position of the lifting hook assembly 3 needs to be adjusted, the upper crossbeam 33 slides along the strip groove 11 and is inserted into the limiting groove 12. Furthermore, the lower parts of the first hook 31 and the second hook 32 are attached to the main bearing 100.

[0028] The above embodiments are merely preferred embodiments of this utility model and are not intended to limit the scope of protection of this utility model. Any changes made based on the design principles of this utility model, or any non-creative changes made on this basis, shall fall within the scope of protection of this utility model.

Claims

1. A hoisting device for the main bearing of a wind turbine generator set, for hoisting the main bearing (100) onto a bearing support frame (200) or removing the main bearing (100) from the bearing support frame (200), characterized in that, The wind turbine main bearing hoisting device includes a cross hoisting bracket (1), several lifting lugs (2) set on the cross hoisting bracket (1), and four hoisting hook assemblies (3) set one-to-one at the ends of the cross hoisting bracket (1); the ends of the cross hoisting bracket (1) are respectively provided with strip grooves (11); the strip grooves (11) are arranged along the horizontal direction of the cross hoisting bracket (1); several limiting grooves (12) are provided at the lower part of the strip grooves (11); the hoisting hook assemblies (3) are opened in the limiting grooves (12); the lower part of the hoisting hook assemblies (3) is hung on the main bearing (100).

2. The wind turbine generator main bearing hoisting device according to claim 1, characterized in that, The hoisting hook assembly (3) includes a first hook (31) and a second hook (32) arranged in parallel and having the same structure, an upper crossbeam (33) disposed between the top of the first hook (31) and the second hook (32), and several support beams (34) disposed between the first hook (31) and the second hook (32); the upper crossbeam (33) is fitted into the limiting groove (12); the lower parts of the first hook (31) and the second hook (32) are hung on the main bearing (100).

3. The wind turbine generator main bearing hoisting device according to claim 2, characterized in that, A U-shaped pad (35) is provided on the lower inner side of the first hook (31) and the second hook (32).

4. The wind turbine generator main bearing hoisting device according to claim 1, characterized in that, The limiting grooves (12) are evenly spaced at the bottom of the strip grooves (11).

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