Maintenance device for variable-pitch driving assembly of direct-driven wind generating set
By designing a maintenance device for the pitch drive assembly of a direct-drive wind turbine, using crossbars and lead screws, the problem of difficulty in repairing the internal bearing of the pitch drive assembly is solved, and rapid disassembly and replacement is achieved. Reduces maintenance costs and improves work efficiency.
Patent Information
- Application Number
- CN202420956293.X
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-05-06
- Publication Date
- 2025-02-07
- Estimated Expiration
- Not applicable · inactive patent
AI Technical Summary
In the prior art, maintenance of the internal bearings of the pitch drive assembly of the direct drive wind turbine set is difficult, resulting in high maintenance costs and complex operation.
A maintenance device including a cross rod, a left screw, a right screw, a middle screw, a left puller and a right puller are designed. Through the cooperation of the lead screw and a puller, the pitch drive assembly can be quickly removed and replaced. Bearings in the middle.
The rapid disassembly and replacement of the variable pitch drive assembly bearing is realized, reducing maintenance costs, simplifying operations and improving working efficiency.
Smart Images
Figure CN222430650U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of wind power generation, in particular to a maintenance device for a variable pitch drive assembly of a direct-drive wind power generator set. Background Art
[0002] The variable pitch drive assembly of a direct-drive wind turbine is an important device in the field of wind power generation. With the continuous development of wind power generation technology, direct-drive wind turbines are being used more and more widely, and the variable pitch drive assembly is one of its key components. Its performance stability and reliability are directly related to the overall operating efficiency of the wind turbine.
[0003] The basic principle of direct-drive wind turbines. Direct-drive wind turbines are devices that use wind to drive the wind turbine blades to rotate, thereby driving the generator to generate electricity. Among them, the variable pitch drive assembly is responsible for controlling the angle of the wind turbine blades to adapt to the operating requirements under different wind speed conditions. However, since wind turbines are usually installed in outdoor environments and are affected by severe weather conditions for a long time, the top bearing inside the variable pitch drive assembly is prone to failure or damage. Therefore, it is particularly important to repair it in a timely and effective manner.
[0004] At present, in the prior art, for the maintenance of the internal bearings of the variable pitch drive assembly of a direct-drive wind turbine generator set at the construction site, because the bearings inside the variable pitch drive assembly of the wind turbine generator set are extremely difficult to disassemble, the maintenance personnel often directly replace the variable pitch drive assembly that needs to be repaired, which is costly and complicated to operate. This further increases the maintenance cost and risk. Therefore, we provide a direct-drive wind turbine generator set variable pitch drive assembly maintenance device, which can quickly disassemble the bearings inside the variable pitch drive assembly of the wind turbine generator set that needs to be repaired for maintenance and replacement. Utility Model Content
[0005] The utility model aims to provide a maintenance device for a variable pitch drive assembly of a direct-drive wind turbine generator set, so as to quickly remove and repair the internal bearing of the variable pitch drive assembly that needs to be repaired.
[0006] The technical solution adopted by the utility model is: a direct-drive wind turbine variable pitch drive assembly maintenance device, including a cross bar, characterized in that a left screw and a right screw are symmetrically installed on both sides of the cross bar, a middle screw is installed on the middle thread of the cross bar, and a left puller and a right puller are also installed on both sides of the cross bar in a matching and replaceable manner, and slots are opened inside the upper ends of the left puller and the right puller, and the left puller and the right puller are slidably installed on both sides of the cross bar through the slots.
[0007] Preferably, a threaded hole is formed through the center of the cross bar, and threaded grooves are formed on both sides of the cross bar.
[0008] Preferably, handrails are fixedly mounted on both sides of the top end of the middle screw rod.
[0009] Preferably, a tilting rod is fixedly installed at the bottom of the left puller and the right puller.
[0010] Preferably, a stopper is fixedly provided in the groove inside the upper ends of the left puller and the right puller.
[0011] Preferably, the lower end of the middle screw is fixedly connected to the bearing top cover.
[0012] Compared with the prior art, the beneficial effects of the present invention are:
[0013] The utility model adopts a cross bar and three screw rods as relative supports, and can easily take out the bearing in the middle of the variable pitch drive assembly that needs to be repaired for replacement and repair. The bearing in the variable pitch drive assembly is pulled out by the screw rods, and then the screw rods on the left and right sides are removed and replaced with the left and right pullers. The bearing in the variable pitch drive assembly is pulled out and replaced by the tilting rod at the bottom of the puller, which saves manpower and material resources during actual replacement and repair, facilitates maintenance, saves costs, and improves work efficiency. BRIEF DESCRIPTION OF THE DRAWINGS
[0014] The drawings constituting a part of this application are used to provide a further understanding of the present invention. The illustrative embodiments of the present invention and their descriptions are used to explain the present invention and do not constitute an improper limitation on the present invention. In the drawings:
[0015] Figure 1 It is a schematic diagram of the structure of the utility model;
[0016] Figure 2 It is a schematic diagram of the installation structure of the left puller and the right puller of the utility model;
[0017] Figure 3 This is a schematic diagram of the crossbar structure of the utility model;
[0018] Figure 4 It is a schematic diagram of the puller structure of the utility model.
[0019] In the figure: 1. middle screw; 2. cross bar; 21. threaded hole; 22. threaded groove; 3. left screw; 4. right screw; 5. left puller; 51. notch; 52. stopper; 53. lever; 6. right puller; 7. drive assembly cover; 8. bearing top cover. DETAILED DESCRIPTION
[0020] It should be noted that, in the absence of conflict, the embodiments and features in the embodiments of the present application may be combined with each other.
[0021] In order to enable those skilled in the art to better understand the solution of the present application, the technical solution in the embodiment of the present application will be clearly and completely described below in combination with the embodiment of the present application. Obviously, the described embodiment is only a part of the embodiment of the present application, not all of the embodiments. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in the field without creative work should fall within the scope of protection of the present application.
[0022] like Figure 1 As shown in .2.3.4, a maintenance device for a variable pitch drive assembly of a direct-drive wind turbine generator system includes a cross bar 2, and a left screw 3 and a right screw 4 are symmetrically installed with threads on both sides of the cross bar 2, and a center screw 1 is installed with threads in the middle of the cross bar 2. A left puller 5 and a right puller 6 are also installed and replaced on both sides of the cross bar 2. A slot 51 is opened inside the upper end of the left puller 5 and the right puller 6, and the left puller 5 and the right puller 6 are slidably installed on both sides of the cross bar 2 through the slot 51.
[0023] A threaded hole 21 is formed through the center of the cross bar 2 , and threaded grooves 22 are formed on both sides of the cross bar 2 .
[0024] Handrails are fixedly installed on both sides of the top of the middle screw rod 1.
[0025] A tilting rod is fixedly installed at the bottom of the left puller 5 and the right puller 6 .
[0026] A stopper 52 is fixedly disposed in the notch 51 inside the upper end of the left puller 5 and the right puller 6 .
[0027] Preferably, the lower end of the middle screw rod 1 is fixedly connected to the bearing top cover 8.
[0028] The working principle of the utility model is: when in use, the middle screw rod 1 is threadedly fixedly connected with the middle bearing top cover 8 inside the variable pitch drive assembly that needs to be disassembled, and then the ends of the left screw rod 3 and the right screw rod 4 are pushed onto the variable pitch drive assembly cover 7 and fixed, and then the middle screw rod 1 is rotated to drive the bearing top cover 8 to move up, and when the bearing moves to a certain position, the left screw rod 3 and the right screw rod 4 are replaced one by one with the left puller 5 and the right puller 6, and then the lifting rods of the left puller 5 and the right puller 6 are hooked into the gap at the lower end of the bearing top cover 8, and finally the bearing inside the variable pitch drive assembly is taken out and replaced and repaired by manpower.
[0029] The above description is only the preferred embodiment of the utility model, and is not intended to limit the utility model. For those skilled in the art, the utility model can have various modifications and changes. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the utility model shall be included in the protection scope of the utility model.
Claims
1. A maintenance device for a direct-drive wind turbine variable pitch drive assembly, comprising a cross bar, characterized in that: The left and right screw rods are symmetrically installed with threads on both sides of the cross bar, and the middle screw rod is installed with threads in the middle of the cross bar. The left puller and the right puller are also installed on both sides of the cross bar in a replacement arrangement. Notches are opened inside the upper ends of the left puller and the right puller, and the left puller and the right puller are slidably installed on both sides of the cross bar through the notches.
2. A direct-drive wind turbine generator variable pitch drive assembly maintenance device according to claim 1, characterized in that: A threaded hole is formed through the center of the cross bar, and threaded grooves are formed on both sides of the cross bar.
3. A direct-drive wind turbine generator variable pitch drive assembly maintenance device according to claim 1, characterized in that: Handrails are fixedly installed on both sides of the top end of the middle screw rod.
4. A direct-drive wind turbine generator variable pitch drive assembly maintenance device according to claim 1, characterized in that: A tilting rod is fixedly installed at the bottom of the left puller and the right puller.
5. A direct-drive wind turbine generator variable pitch drive assembly maintenance device according to claim 1, characterized in that: Stoppers are fixedly arranged in the notches inside the upper ends of the left puller and the right puller.
6. A direct-drive wind turbine generator variable pitch drive assembly maintenance device according to claim 1, characterized in that: The lower end of the middle screw rod is fixedly connected to the bearing top cover.