A clamping mechanism for wind wheel correction

Abstract

A clamping mechanism for wind turbine alignment includes a worktable, characterized in that it further includes a rotating shaft, a tensioning shaft, and a lifting assembly. The rotating shaft is rotatably mounted on the upper surface of the worktable, and the tensioning shaft is mounted at the center of the rotating shaft. The tensioning shaft has a hollow structure, with a collet portion at its upper end. A conical tie rod is provided within the inner tube of the tensioning shaft. The upper end of the conical tie rod is a conical head, the diameter of which gradually increases from bottom to top, and the diameter of the conical head is larger than the diameter of the tensioning shaft. A tie rod channel is provided at the center of the rotating shaft, and the conical tie rod is mounted to the lifting assembly via the tie rod channel. The purpose of this invention is to provide a clamping mechanism for wind turbine alignment. This device has an installation shaft with a collet structure on the rotating base. The collet structure supports the shaft hole of the wind turbine, achieving a fixed constraint relationship between the wind turbine and the installation shaft.

Description

Technical Field

[0001] This utility model relates to wind turbine production equipment, and in particular to a clamping mechanism for wind turbine alignment. Background Technology

[0002] Current metal impellers generally consist of a central shaft and a cylindrical impeller fixed to the outer ring of the central shaft. Under existing technology, there will be errors in the concentricity of the impeller and the central shaft, which will affect the performance of the product. Therefore, it is necessary to test and correct the concentricity of the impeller and the impeller shaft.

[0003] When inspecting and calibrating the wind turbine, it needs to be fixed. The current method of fixing it is to use bolts and nuts to constrain the wind turbine to a shaft, and then use the inspection and calibration device to carry out the corresponding work. The nut installation method is complicated to disassemble and assemble. When dealing with a large number of products, this method will increase the workload and affect the work efficiency.

[0004] Another point to consider is that when testing the concentricity of the wind turbine and the central shaft, the location of any deviation in the wind turbine is detected by monitoring its rotation. Therefore, while fixing the wind turbine, the issue of its rotation must also be taken into account. Utility Model Content

[0005] To address the aforementioned shortcomings, the purpose of this invention is to propose a clamping mechanism for wind turbine alignment. This device has an installation shaft with a collet structure on the rotating base. The collet structure supports the shaft hole of the wind turbine, thereby achieving a fixed constraint relationship between the wind turbine and the installation shaft.

[0006] To achieve this objective, the present invention adopts the following technical solution: A clamping mechanism for wind turbine alignment includes a worktable, a rotating shaft, a tensioning shaft, and a lifting assembly. The rotating shaft is rotatably mounted on the upper surface of the worktable, and the tensioning shaft is mounted at the center of the rotating shaft. The tensioning shaft has a hollow structure. The upper end of the tensioning shaft is provided with a collet. The inner tube of the tensioning shaft is provided with a conical tie rod. The upper end of the conical tie rod is a conical head. The diameter of the conical head gradually increases from bottom to top. The diameter of the conical head is larger than the diameter of the tensioning shaft. The rotating shaft has a tie rod channel at its center, and the conical tie rod is installed on the lifting assembly through the tie rod channel.

[0007] Preferably, it also includes a rotary seat, which is fixedly installed on the worktable, and the cylindrical inner cavity of the rotary seat penetrates the worktable; The rotating shaft is mounted in the rotating seat by bearings. The upper end of the rotating shaft is a mounting platform. The tensioning shaft is located at the center of the mounting platform. The center of the mounting platform is provided with a through hole that connects the hollow structure of the tensioning shaft and the tie rod channel. The upper surface of the mounting platform is provided with a limiting protrusion.

[0008] Preferably, the lifting assembly includes a guide column, a mounting plate, a guide plate, and a cylinder; Multiple guide posts are fixedly installed on the lower surface of the worktable, with the center of the rotation axis as the reference. The lower ends of the plurality of guide posts are fixedly installed on the mounting plate, the cylinder is fixedly installed on the mounting plate, the guide plate is slidably installed on the guide posts, and the working end of the cylinder is fixedly installed on the guide plate; The lower end of the cone-shaped tie rod is fixedly installed on the guide plate.

[0009] Preferably, the collet portion is provided with multiple strip grooves, which are opened downward from the upper end of the collet portion, and the strip grooves penetrate the inside and outside of the collet portion. The multiple strip grooves are spaced apart. The inside of the collet is provided with a conical cavity that matches the conical head of the conical tie rod.

[0010] Furthermore, a transmission wheel is fitted onto the lower end of the rotating shaft; a servo drive device is mounted on the lower surface of the worktable, and the servo drive device forms a transmission assembly with the transmission wheel via a transmission belt.

[0011] Furthermore, a proximity switch is mounted on the mounting plate, with the detection part of the proximity switch facing the guide plate.

[0012] Furthermore, multiple bearings are constrained and installed in the inner cavity of the swivel seat, and the swivel shaft is installed in the inner ring of the multiple bearings; The mounting platform can be detachably installed on the upper end of the rotating shaft.

[0013] One of the above technical solutions includes the following beneficial effects: The clamping mechanism proposed in the solution utilizes the shaft hole structure of the wind turbine and designs a collet part on the shaft where the wind turbine is installed. When the cone head pulls down, the cone head expands against the collet, so that the collet part and the shaft hole of the wind turbine form an interference fit. Compared with the nut fixing used in the prior art, such a structure can reduce the workload of workers and improve work efficiency. Attached Figure Description

[0014] Figure 1 This is a schematic diagram of the structure of the upper surface of the workbench of this utility model; Figure 2 This is a schematic diagram of the structure of the clamping wind turbine of this utility model; Figure 3 This is a schematic diagram of the structure of the lower surface of the workbench of this utility model; Figure 4 This is a cross-sectional schematic diagram of the present invention; Figure 5 yes Figure 4A magnified view of a portion of the image.

[0015] The components include: worktable 100, rotating shaft 200, rotating seat 210, mounting platform 220, limiting protrusion 230, transmission wheel 240, tensioning shaft 300, collet part 310, cone head 320, lifting assembly 400, cone head tie rod 410, guide column 420, guide plate 430, and cylinder 440. Detailed Implementation

[0016] The embodiments of this utility model are described in detail below. Examples of these embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain this utility model, and should not be construed as limiting this utility model.

[0017] like Figure 1 Figure 2 and Figure 3 As shown, a clamping mechanism for wind turbine alignment includes a worktable 100, a rotating shaft 200, a tensioning shaft 300, and a lifting assembly 400. The rotating shaft 200 is rotatably mounted on the upper surface of the worktable 100, and the tensioning shaft 300 is mounted at the center of the rotating shaft 200. The tensioning shaft 300 has a hollow structure. The upper end of the tensioning shaft 300 is provided with a collet 310. The inner tube of the tensioning shaft 300 is provided with a conical tie rod 410. The upper end of the conical tie rod 410 is a conical head 320. The diameter of the conical head 320 gradually increases from bottom to top. The diameter of the conical head 320 is larger than the diameter of the tensioning shaft 300. The rotating shaft 200 has a tie rod channel at its center, and the conical tie rod 410 is installed on the lifting assembly 400 through the tie rod channel.

[0018] The proposed clamping mechanism utilizes the shaft hole structure of the wind turbine. A collet 310 is designed on the shaft where the wind turbine is installed. When the conical pull rod 410 is pulled down, the conical head 320 expands against the collet, causing the collet 310 to form an interference fit with the shaft hole of the wind turbine. Compared with the nut fixing used in the existing technology, this structure can reduce the workload of workers and improve work efficiency.

[0019] It also includes a rotating seat 210, which is fixedly installed on the worktable 100, and the cylindrical inner cavity of the rotating seat 210 passes through the worktable 100. The rotating shaft 200 is mounted in the rotating seat 210 by bearings. The upper end of the rotating shaft 200 is a mounting platform 220. The tensioning shaft 300 is located at the center of the mounting platform 220. The center of the mounting platform 220 is provided with a through hole that connects the hollow structure of the tensioning shaft 300 and the tie rod channel. The upper surface of the mounting platform 220 is provided with a limiting protrusion 230.

[0020] The limiting protrusion 230 on the rotating seat 210 is adapted to the limiting notch on the impeller shaft hole. The impeller will eventually be installed on the motor for operation. In order to constrain the radial degree of freedom between the motor shaft and the impeller, existing fan motor shafts and impellers are equipped with limiting structures. In this solution, the rotating seat 210 uses the limiting notch of the ventilation wheel to set the limiting protrusion 230, which is also to limit the axial rotational degree of freedom between the impeller and the tensioning shaft 300. Through this structure, in conjunction with the tensioning structure of the collet 310, the axial sliding and axial rotational degree of freedom of the impeller are constrained.

[0021] like Figure 2 As shown, the lifting assembly 400 includes a guide column 420, a mounting plate, a guide plate 430, and a cylinder 440; Multiple guide posts 420 are fixedly installed on the lower surface of the worktable 100, with the center of the rotation axis 200 as the reference. The lower ends of the plurality of guide posts 420 are fixedly installed on the mounting plate, the cylinder 440 is fixedly installed on the mounting plate, the guide plate 430 is slidably installed on the guide posts 420, and the working end of the cylinder 440 is fixedly installed on the guide plate 430. The lower end of the cone-shaped tie rod 410 is fixedly installed on the guide plate 430.

[0022] The purpose of the lifting assembly 400 is to raise and lower the cone head of the cone head pull rod 410. The cylinder 440 pushes the guide plate 430 to slide up and down along the guide post 420. The guide plate 430 rises, causing the pull rod to rise. After the pull rod rises, the collet 310 loses the compression of the cone head 320, and the collet returns to its natural state. At this time, the interference fit between the collet 310 and the impeller shaft hole changes to a clearance fit. Conversely, the cylinder 440 pulls the pull rod down, and the cone head 320 compresses the inner cavity of the collet 310, changing the clearance fit between the collet 310 and the impeller shaft hole to an interference fit. The mounting plate is used to fix the lower ends of the multiple guide posts 420 together to maintain their relative positions.

[0023] like Figure 3 As shown, the collet portion 310 is provided with multiple strip grooves, which are opened downward from the upper end of the collet portion 310. The strip grooves penetrate the inside and outside of the collet portion 310, and the multiple strip grooves are spaced apart. The collet 310 has a conical cavity inside that is adapted to the conical head 320 of the conical tie rod 410.

[0024] The strip groove divides the cylindrical structure into multiple strip structures in a ring array. The variable structure in the array allows for changes in the ring diameter. By changing the diameter of the ring array, the interference fit and clearance fit between the collet 310 and the impeller shaft hole can be changed.

[0025] As a supplement to the above technology, a transmission wheel 240 is fitted at the lower end of the rotating shaft 200; a servo drive device is installed on the lower surface of the worktable 100, and the servo drive device and the transmission wheel 240 form a transmission assembly through a transmission belt.

[0026] The rotating shaft 200 is driven by a servo drive mechanism via belt transmission. The lifting structure and the drive structure of the rotating shaft 200 are designed separately, resulting in a simple and reliable structure.

[0027] In addition, a proximity switch is installed on the mounting plate, with the detection part of the proximity switch facing the guide plate 430.

[0028] The proximity switch detects the positional change between the guide plate 430 and the proximity switch. When the guide plate 430 is raised, the equipment can be controlled to enter the fan wheel replacement stage. Other detection and processing equipment cannot enter the working state at this stage to ensure operational safety.

[0029] In addition, multiple bearings are constrained and installed in the inner cavity of the swivel seat 210, and the swivel shaft 200 is installed in the inner ring of the multiple bearings; Mounting platform 220 can be detachably mounted on the upper end of rotating shaft 200.

[0030] The technical principles of this utility model have been described above with reference to specific embodiments. These descriptions are merely for explaining the principles of this utility model and should not be construed as limiting the scope of protection of this utility model in any way. Based on this explanation, those skilled in the art can readily conceive of other specific embodiments of this utility model without any inventive effort, and these embodiments will all fall within the scope of protection of this utility model.

Claims

1. A clamping mechanism for wind wheel correction, comprising a worktable, characterized in that, It also includes a rotating shaft, a tensioning shaft, and a lifting assembly. The rotating shaft is rotatably mounted on the upper surface of the worktable, and the tensioning shaft is mounted at the center of the rotating shaft. The tensioning shaft has a hollow structure. The upper end of the tensioning shaft is provided with a collet. The inner tube of the tensioning shaft is provided with a conical tie rod. The upper end of the conical tie rod is a conical head. The diameter of the conical head gradually increases from bottom to top. The diameter of the conical head is larger than the diameter of the tensioning shaft. The rotating shaft has a tie rod channel at its center, and the conical tie rod is installed on the lifting assembly through the tie rod channel.

2. The clamping mechanism for wind wheel correction according to claim 1, characterized in that, It also includes a rotating seat, which is fixedly installed on the worktable, and the cylindrical inner cavity of the rotating seat penetrates the worktable; The rotating shaft is mounted in the rotating seat by bearings. The upper end of the rotating shaft is a mounting platform. The tensioning shaft is located at the center of the mounting platform. The center of the mounting platform is provided with a through hole that connects the hollow structure of the tensioning shaft and the tie rod channel. The upper surface of the mounting platform is provided with a limiting protrusion.

3. The clamping mechanism for wind wheel correction according to claim 1, characterized in that, The lifting assembly includes a guide column, a mounting plate, a guide plate, and a cylinder; Multiple guide pillars are fixedly installed on the lower surface of the worktable, with the center of the rotation axis as the reference. The lower ends of the plurality of guide posts are fixedly installed on the mounting plate, the cylinder is fixedly installed on the mounting plate, the guide plate is slidably installed on the guide posts, and the working end of the cylinder is fixedly installed on the guide plate; The lower end of the cone-shaped tie rod is fixedly installed on the guide plate.

4. The clamping mechanism for wind wheel correction according to any one of claims 1-3, characterized in that, The collet portion is provided with multiple strip-shaped grooves, which are opened downward from the upper end of the collet portion. The strip-shaped grooves penetrate the inside and outside of the collet portion, and the multiple strip-shaped grooves are spaced apart. The inside of the collet is provided with a conical cavity that matches the conical head of the conical tie rod.

5. The clamping mechanism for wind turbine alignment according to any one of claims 1-3, characterized in that, A transmission wheel is fitted at the lower end of the rotating shaft; a servo drive device is installed on the lower surface of the worktable, and the servo drive device forms a transmission assembly with the transmission wheel via a transmission belt.

6. The clamping mechanism for wind wheel correction according to claim 3, wherein, The mounting plate is equipped with a proximity switch, and the detection part of the proximity switch faces the guide plate.

7. The clamping mechanism for wind wheel correction according to claim 2, wherein Multiple bearings are constrained and installed in the inner cavity of the rotating seat, and the rotating shaft is installed on the inner ring of the multiple bearings; The mounting platform can be detachably installed on the upper end of the rotating shaft.

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