Tensioning wheel lifting device of variable pitch system of wind driven generator

Abstract

The utility model discloses a wind driven generator variable pitch system tensioning wheel lifting device which comprises a plate body, and at least two tensioning wheels are installed on the plate body. A lifting assembly is further arranged at the bottom of the plate body, the lifting assembly comprises an adjusting piece, the whole lifting assembly is vertical, and the top of the lifting assembly is installed at the edge of the bottom end of the plate body; the driving part is arranged on one side of the adjusting part and is in meshing transmission with the adjusting part; the mounting part is fixedly arranged in a cabin of the wind driven generator, the mounting part is located at one end of the driving part and bears the driving part, and the driving part drives the adjusting part to ascend and descend during ascending and descending of the tensioning wheel, so that adjustment of the plate body and the tensioning wheel is achieved; through the designed lifting assembly, the height of the tensioning wheel can be rapidly and conveniently adjusted, operation is very convenient, the working efficiency is effectively improved, meanwhile, when the plate body and the tensioning wheel are not used, normal supporting can be conducted on the plate body and the tensioning wheel, and the defects of an existing structure in the using process are overcome.

Description

Technical Field

[0001] This utility model belongs to the field of wind turbine technology, specifically relating to a tensioner lifting device for a wind turbine pitch system. Background Technology

[0002] In the pitch system of a wind turbine, belts or transmission devices may be used to connect and drive the pitch motor and the blades to adjust the blade angle; tensioners generate a force to tighten the belt, ensuring that the belt can press against the working pulley with appropriate pressure, thereby maintaining the stability and reliability of the transmission system.

[0003] The existing tensioning wheel requires a screw that runs through the tensioning wheel plate and a nut fitted on the screw that supports the plate to adjust the height of the tensioning wheel before maintenance can be performed. However, due to the weight of the plate and the tensioning wheel itself, a large number of nuts are installed on the screw, making each adjustment cumbersome and significantly impacting work efficiency. Therefore, it has significant limitations in practical use and has room for improvement. Utility Model Content

[0004] The purpose of this utility model is to provide a tensioner lifting device for a wind turbine pitch system, so as to solve the problem mentioned in the background art that the existing tensioner is inconvenient to lift and adjust during maintenance.

[0005] To achieve the above objectives, this utility model provides the following technical solution: a tensioner lifting device for a wind turbine pitch system, comprising a plate on which at least two tensioners are mounted; a lifting assembly is also provided at the bottom of the plate, the lifting assembly including an adjusting member, which is vertical in shape and its top is installed at the bottom edge of the plate; a driving member, which is disposed on one side of the adjusting member and engages with the adjusting member for transmission; and a mounting member, which is fixed inside the wind turbine nacelle, located at one end of the driving member and supporting the driving member. During the lifting and lowering of the tensioners, the driving member drives the adjusting member to lift and lower, thereby realizing the adjustment of the plate and the tensioners.

[0006] Preferably, the adjusting component is a rack with a toothed groove on its side facing the driving component. The toothed groove meshes with the driving component. An integral mounting seat is fixed to the top of the rack, and the mounting seat is bolted to the bottom end face of the plate.

[0007] Preferably, the drive component includes a gear and a rotating shaft passing through the gear axis, the gear rotating about the axis of the rotating shaft, and the gear meshing with a rack.

[0008] Preferably, an integral flat key is fixed to the top of the rotating shaft, which engages with the gear for limiting and locking, so that the gear rotates synchronously when the rotating shaft rotates; a guide rod is also movably inserted through the plate, and a threaded sleeve is installed at the bottom of the guide rod. An installation rod is also provided at the bottom of the guide rod, and the bottom end of the installation rod has an arc end that engages with the mounting bracket. Bolts that abut against the mounting bracket are screwed into both sides of the installation rod, and the top of the installation rod is threaded. During the lifting and lowering of the plate, the guide rod can achieve vertical guidance and avoid left and right swaying. At the same time, the height of the guide rod can be increased by rotating the threaded sleeve, thereby abutting against the external structure and improving the guiding strength of the guide rod.

[0009] Preferably, a drive component is installed at one end of the rotating shaft facing outward from the plate. The drive component includes a motor and a handwheel, and can be selected for manual or electric lifting according to actual usage requirements.

[0010] Preferably, the mounting component is a bracket, and at least two brackets are provided, each located at one end of the rotating shaft facing inwards from the plate. The brackets support the rotating shaft, thereby ensuring that the gear will not fall off.

[0011] Preferably, the bracket includes two symmetrically arranged and inclined braces, and a collar fixed to the top of the two braces. A fixing plate is also fixed between the two braces. The bottom of the fixing plate has an arc groove that fits onto the mounting bracket. A through screw hole is provided on the braces and the fixing plate. A tightening bolt that abuts against the mounting bracket is screwed into the screw hole to achieve installation and fixation. The rotating shaft passes through the inside of the collar to provide support. A screw hole is also provided on the top of the collar. A bolt is screwed into the screw hole and abuts against the end face of the rotating shaft to limit the position of the rotating shaft. This ensures that, without adjustment, the position of the rack is limited by the gear, thereby limiting the height of the plate.

[0012] Compared with the prior art, the beneficial effects of this utility model are:

[0013] The designed lifting component allows for quick and easy adjustment of the tensioning wheel's height, making operation very convenient and effectively improving work efficiency. At the same time, it can also provide normal support for the plate and tensioning wheel when not in use, thus overcoming the shortcomings of the existing structure in use. Attached Figure Description

[0014] Figure 1 This is a schematic diagram of the structure of this utility model;

[0015] Figure 2 This is a bottom view of the present invention;

[0016] Figure 3This is a schematic diagram of the structure of the bracket of this utility model.

[0017] In the picture:

[0018] 100. Plate body; 101. Tensioner wheel; 102. Rack; 103. Mounting base;

[0019] 200. Gear; 201. Rotating shaft; 202. Bracket; 203. Flat key; 204. Fixing plate; 205. Diagonal brace; 206. Collar; 207. Screw hole;

[0020] 300. Mounting bracket;

[0021] 400, guide rod; 401, mounting rod; 402, threaded sleeve. Detailed Implementation

[0022] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0023] Example 1

[0024] Please see Figures 1 to 3 This utility model provides a technical solution: a tensioner lifting device for a wind turbine pitch system, comprising...

[0025] A plate 100, on which at least two tensioning wheels 101 are installed;

[0026] A lifting assembly is also provided at the bottom of the plate 100, the lifting assembly including...

[0027] The adjusting component is vertical in shape, and its top is installed at the bottom edge of the plate 100;

[0028] The driving component is located on one side of the adjusting component and engages with the adjusting component for transmission.

[0029] The mounting component is fixed inside the wind turbine nacelle. The mounting component is located at one end of the drive component and supports the drive component. During the raising and lowering of the tension wheel 101, the drive component drives the adjustment component to raise and lower, thereby realizing the adjustment of the plate 100 and the tension wheel 101.

[0030] In this embodiment, preferably, the adjusting component is a rack 102. The rack 102 has a toothed groove on its side facing the driving component. The toothed groove meshes with the driving component. An integral mounting seat 103 is fixed on the top of the rack 102. The mounting seat 103 is installed on the bottom surface of the plate 100 by bolts.

[0031] In this embodiment, preferably, the driving component includes a gear 200 and a rotating shaft 201 that passes through the axis of the gear 200. The gear 200 rotates around the axis of the rotating shaft 201, and the gear 200 meshes with the rack 102.

[0032] In this embodiment, preferably, an integral flat key 203 is fixed to the top of the rotating shaft 201. The flat key 203 engages with the gear 200 for limiting, so that when the rotating shaft 201 rotates, it will synchronously drive the gear 200 to rotate. A guide rod 400 is also movably inserted through the plate 100. A threaded sleeve 402 is installed at the bottom end of the guide rod 400. An installation rod 401 is also provided at the bottom of the guide rod 400. The bottom end of the installation rod 401 has an arc end that is engaged with the mounting bracket 300. Bolts that abut against the mounting bracket 300 are screwed into both sides of the installation rod 401. The top of the installation rod 401 is threadedly connected to 402. During the lifting and lowering of the plate 100, the guide rod 400 can be used to guide vertically and prevent left and right swaying. At the same time, the height of the guide rod 400 can be increased by rotating the threaded sleeve 402, so that it abuts against the external structure, thereby improving the guiding strength of the guide rod 400.

[0033] In this embodiment, preferably, a drive component is installed at one end of the rotating shaft 201 facing the outside of the plate 100. The drive component is a motor or handwheel, which can automatically lift and lower according to maintenance needs, making it highly convenient to operate.

[0034] In this embodiment, preferably, the mounting component is a bracket 202. At least two brackets 202 are provided, and each is located at one end of the rotating shaft 201 facing the inside of the plate 100. The brackets 202 support the rotating shaft 201, thereby ensuring that the gear 200 will not fall off.

[0035] In this embodiment, preferably, the bracket 202 includes two symmetrically arranged and inclined diagonal braces 205, and a collar 206 fixed to the top of the two diagonal braces 205. A fixing plate 204 is also fixed between the two diagonal braces 205. The bottom of the fixing plate 204 has an arc groove, which is fitted onto the mounting bracket 300. A through screw hole is opened on the diagonal braces 205 and the fixing plate 204. A tightening bolt that abuts against the mounting bracket 300 is screwed into the screw hole to achieve installation and fixation. The rotating shaft 201 passes through the inside of the collar 206 to provide support. A screw hole 207 is also opened at the top of the collar 206. A bolt is screwed into the screw hole 207 and abuts against the end face of the rotating shaft 201 to limit the position of the rotating shaft 201. This ensures that the position of the rack 102 is limited by the gear 200 when no adjustment is needed, thereby limiting the height of the plate 100.

[0036] Example 2

[0037] The difference from that in Embodiment 1 is that, in this embodiment, preferably, a driving component is installed at one end of the rotating shaft 201 facing the outside of the plate 100. The driving component is a handwheel, which realizes lifting and lowering by rotating the first wheel. The overall structure is simple, the manufacturing cost is low, and it is easy to install and maintain.

[0038] Although embodiments of the present invention have been shown and described (see the detailed description above), it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A tensioner lifting device for a wind turbine pitch system, comprising: A plate (100) on which at least two tensioning rollers (101) are mounted; Its features are: The bottom of the plate (100) is also provided with a lifting assembly, which includes... The adjusting component is vertical in shape, and its top is installed at the bottom edge of the plate (100); The driving component is located on one side of the adjusting component and engages with the adjusting component for transmission. The mounting component is fixed inside the nacelle of the wind turbine. The mounting component is located at one end of the drive component and supports the drive component.

2. The tensioner lifting device for a wind turbine pitch system according to claim 1, characterized in that: The adjusting component is a rack (102), which has a toothed groove on its side facing the driving component. The toothed groove meshes with the driving component. An integral mounting seat (103) is fixed on the top of the rack (102), and the mounting seat (103) is bolted to the bottom end face of the plate (100).

3. The tensioner lifting device for a wind turbine pitch system according to claim 2, characterized in that: The drive unit includes a gear (200) and a rotating shaft (201) passing through the axis of the gear (200). The gear (200) rotates about the axis of the rotating shaft (201). The gear (200) meshes with a rack (102).

4. The tensioner lifting device for a wind turbine pitch system according to claim 3, characterized in that: An integral flat key (203) is fixed to the top of the rotating shaft (201), and the flat key (203) is engaged with the gear (200) for limiting. A guide rod (400) is also movably inserted through the plate (100). A threaded sleeve (402) is installed at the bottom end of the guide rod (400). An installation rod (401) is also provided at the bottom of the guide rod (400). The bottom end of the installation rod (401) has an arc end, which is inserted into the mounting bracket (300). Bolts that abut against the mounting bracket (300) are screwed into both sides of the installation rod (401). The top of the installation rod (401) is threadedly connected to (402).

5. A tensioner lifting device for a wind turbine pitch system according to claim 3, characterized in that: The rotating shaft (201) is equipped with a driving component at one end facing the outside of the plate (100). The driving component includes a motor and a handwheel.

6. The tensioner lifting device for a wind turbine pitch system according to claim 1, characterized in that: The mounting component is a bracket (202), and at least two brackets (202) are provided, each located at one end of the rotating shaft (201) facing the interior of the plate (100).

7. A tensioner lifting device for a wind turbine pitch system according to claim 6, characterized in that: The bracket (202) includes two symmetrically arranged and inclined diagonal braces (205) and a collar (206) fixed to the top of the two diagonal braces (205). A fixing plate (204) is also fixed between the two diagonal braces (205). The bottom of the fixing plate (204) is provided with an arc groove, which is sleeved on the mounting bracket (300). A through screw hole is provided on the diagonal braces (205) and the fixing plate (204). A tightening bolt that abuts against the mounting bracket (300) is screwed into the screw hole. The rotating shaft (201) passes through the inside of the collar (206). A screw hole (207) is also provided on the top of the collar (206). A bolt is screwed into the screw hole (207) and abuts against the end face of the rotating shaft (201).

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