An adjustable fan bearing removal tool

Abstract

This utility model relates to the field of power production and supply technology, and discloses an adjustable wind turbine bearing removal tool, including a double connecting plate, inside which two adjustable bearing removal plates are movably installed. This utility model ensures that the device can adapt to different specifications of spindles by quickly disengaging and refitting the fixed pin with the adjustable bearing removal plates and the double connecting plate, thus improving versatility. Secondly, the threaded connection design between the fixed pin and the double connecting plate ensures that the adjustable bearing removal plates can be flexibly rotated and adjusted, while also ensuring structural stability. Furthermore, the two pull claws clamp the bearing from above and below, and the opposing forces of the hydraulic jack and the double connecting plate form a stable bearing removal force system, avoiding removal difficulties caused by excessive spindle length, significantly improving work efficiency. At the same time, the device effectively avoids damage to equipment due to improper operation through precise force application, ensuring maintenance reliability and reducing equipment maintenance risks and costs.

Description

Technical Field

[0001] This utility model relates to the field of power production and supply technology, and more specifically, to an adjustable fan bearing removal tool. Background Technology

[0002] Howden wind turbines have a unique design in their main shaft, which is relatively long while the bearings are relatively small. This structure makes it impossible to use conventional pullers to remove the bearings from the main shaft. Currently, during unit maintenance, flame cutting is commonly used for bearings that cannot be removed with pullers. However, flame cutting is not only time-consuming and labor-intensive, increasing maintenance costs and time, but also carries the risk of cutting the main shaft. Once the main shaft is cut, it may affect the operating performance and service life of the wind turbine, posing a safety hazard to the normal operation of the wind turbine. Therefore, improvements and optimizations are needed. Utility Model Content

[0003] To overcome the shortcomings of the existing technology, this utility model provides an adjustable fan bearing removal tool, which has the advantages of simple and convenient bearing removal.

[0004] To achieve the above objectives, this utility model provides the following technical solution: an adjustable fan bearing removal tool, comprising a double connecting plate, wherein two adjustable bearing plates are movably installed inside the double connecting plate, the two adjustable bearing plates are arranged vertically at intervals, and multiple adjustment holes are opened on the side of the adjustable bearing plates, the multiple adjustment holes being arranged equidistantly in the transverse direction; a pull claw is fixedly installed on the side of the adjustable bearing plate away from the double connecting plate; a fixing pin is threadedly connected to the double connecting plate, the fixing pin passing through the adjustment hole; the adjustable bearing plates rotate around the adjustment hole; and a hydraulic jack is provided between the two adjustable bearing plates.

[0005] As a preferred embodiment of this utility model, a limiting collar is slidably installed on the inner side of the double connecting plate, and the limiting collar is sleeved on the outer surface of the hydraulic jack.

[0006] As a preferred technical solution of this utility model, the double connecting plate is I-shaped and does not affect the adjustable bearing plate from rotating to a certain extent.

[0007] As a preferred technical solution of this utility model, the inner side of the adjustable bearing plate is provided with a sliding groove, and the extension protrusions on both sides of the limiting collar extend to the inner side of the sliding groove.

[0008] As a preferred embodiment of this utility model, the pull claw is L-shaped, and the ends of the two pull claws extend inward and are inclined respectively.

[0009] As a preferred embodiment of this utility model, the diameter of one end of the fixing pin is larger than the inner diameter, and the end with the larger diameter is located on the front of the double connecting plate.

[0010] Compared with the prior art, the beneficial effects of this utility model are as follows:

[0011] This invention ensures the device can adapt to different specifications of spindles by quickly disengaging and refitting the fixed pin with the adjustable bearing plate and the double connecting plate, thus improving versatility. Secondly, the threaded connection design of the fixed pin and the double connecting plate ensures both flexible rotation and structural stability of the adjustable bearing plate. Furthermore, the two pull claws clamp the outer end face of the bearing, and the opposing forces of the hydraulic jack and the double connecting plate form a stable bearing removal force system, avoiding difficulties in removal due to excessive spindle length and significantly improving work efficiency. At the same time, the device effectively avoids damage to the equipment due to improper operation by applying precise force, ensuring maintenance reliability, reducing equipment maintenance risks and costs, and providing efficient and reliable technical support for wind turbine maintenance. Attached Figure Description

[0012] Figure 1 This is a frontal three-dimensional appearance structural diagram of the present utility model;

[0013] Figure 2 This is a schematic diagram of the adjustable bearing plate structure of this utility model;

[0014] Figure 3 This is a schematic diagram of the double connecting plate structure of this utility model;

[0015] Figure 4 This is a schematic diagram of the pull claw structure of this utility model;

[0016] Figure 5 This is a schematic diagram of the fixing pin structure of this utility model;

[0017] Figure 6 This is a schematic diagram of the utility model in use.

[0018] In the diagram: 1. Double connecting plate; 2. Adjustable bearing plate; 3. Pull claw; 4. Hydraulic jack; 5. Fixing pin; 6. Slide groove; 7. Limiting collar; 8. Adjustment hole. Detailed Implementation

[0019] 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.

[0020] like Figures 1 to 6 As shown, this utility model provides an adjustable fan bearing removal tool, including a double connecting plate 1. Adjustable bearing removal plates 2 are movably installed on the upper and lower sides of the double connecting plate 1. The adjustable bearing removal plates 2 have adjustment holes 8 that are evenly spaced inside. Pull claws 3 are fixedly installed on the outer side of the adjustable bearing removal plates 2 near the bearing. The double connecting plate 1 is threadedly connected to a fixing pin 5, which passes through the adjustment hole 8. Specifically, the outer circumference of the fixing pin 5 is provided with an external thread. One side of the double connecting plate 1 is provided with a through hole, and the other side is provided with a threaded hole. The fixing pin 5 passes through the through hole and the adjustment hole 8 and is screwed into the threaded hole. The adjustable bearing removal plates 2 rotate around the adjustment hole 8. A hydraulic jack 4 is provided between the two adjustable bearing removal plates 2.

[0021] When it is necessary to remove the fan bearing, first adjust the clamping length of the removal tool according to the length of the main shaft. First, rotate the fixing pin 5 to disengage it from the adjustable bearing plate 2 and the double connecting plate 1. Then, adjust the double connecting plate 1 to correspond with the adjusting hole 8 according to the length of the main shaft. Then, rotate the fixing pin 5 through the matching adjusting hole 8 in the adjustable bearing plate 2. Since the fixing pin 5 is threaded on the inner side of the contacting double connecting plate 1, it does not affect the rotation adjustment of the adjustable bearing plate 2. Then, at the same time, the two pull claws 3 clamp the outer side of the bearing. The bearing is positioned to prevent it from moving outwards. At this time, the double connecting plate 1 is adjusted, and then the hydraulic jack 4 is installed on the side of the double connecting plate 1. The hydraulic jack 4 is located inside the two adjustable bearing plates 2, so that the output end of the hydraulic jack 4 is aligned with the end face of the main shaft. The hydraulic jack 4 is started, so that the output end of the hydraulic jack 4 applies a force to the main shaft. At the same time, the double connecting plate 1 applies an opposite force to resist the hydraulic jack 4, pushing the main shaft to move outwards. Then, as the output end of the hydraulic jack 4 applies force to the main shaft, the bearing is slowly pulled off the main shaft.

[0022] By quickly disengaging and refitting the fixed pin 5 with the adjustable bearing plate 2 and the double connecting plate 1, the removal tool can be adapted to spindles of different sizes, improving its versatility. Secondly, the threaded connection design between the fixed pin 5 and the double connecting plate 1 ensures that the adjustable bearing plate 2 can be rotated and adjusted flexibly while ensuring structural stability. Furthermore, the two pull claws 3 clamp the bearing from above and below, and together with the opposing forces of the hydraulic jack 4 and the double connecting plate 1, a stable bearing force system is formed, avoiding removal difficulties caused by excessive spindle length and significantly improving work efficiency. At the same time, the device effectively avoids damage to the equipment due to improper operation by applying precise force, ensuring maintenance reliability, reducing equipment maintenance risks and costs, and providing efficient and reliable technical support for wind turbine maintenance.

[0023] Among them, a limiting collar 7 is slidably installed on the inner side of the double connecting plate 1, and the limiting collar 7 is sleeved on the outer surface of the hydraulic jack 4. This allows the limiting collar 7 to move synchronously with the double connecting plate 1 along the adjustable bearing plate 2 for lateral adjustment, thereby limiting the hydraulic jack 4 and preventing the output end of the hydraulic jack 4 from shifting due to the force when the front end of the hydraulic jack 4 applies force to the main shaft.

[0024] The double connecting plate 1 is I-shaped, and the hydraulic jack 4 is installed on the side of the double connecting plate 1 without affecting the adjustable bearing plate 2 to rotate. This avoids affecting the adjustable bearing plate 2 to drive the pull claw 3 to rotate and adjust, so as to better clamp the bearing.

[0025] The adjustable bearing plate 2 has a sliding groove 6 on its inner side, and the extended protrusions on both sides of the limiting collar 7 extend into the sliding groove 6, which makes the limiting collar 7 more stable when it moves.

[0026] Specifically, this utility model can only be applied to bearings of a certain size. The maximum angle formed by the two adjustable bearing plates 2 is 90 degrees to ensure that the extension protrusion of the limiting collar 7 always moves within the slide groove 6.

[0027] The pull claw 3 is L-shaped, and the ends of the two pull claws 3 extend inward and tilt to facilitate clamping the bearing from the top and bottom, thus preventing the bearing from falling off when it is slowly pulled off the spindle.

[0028] The diameter of one end of the fixing pin 5 is larger than the inner diameter, and the end with the larger diameter is located on the front of the double connecting plate 1, which makes it easy for the staff to rotate it.

[0029] Working principle and usage process of this utility model:

[0030] When it is necessary to remove the bearing on the main shaft of the blower, first, according to the length of the main shaft, rotate the fixing pin 5 to disengage it from the adjustable bearing plate 2 and the double connecting plate 1. Then, adjust the double connecting plate 1 to correspond with the adjustment hole 8 according to the length of the main shaft. Rotate the fixing pin 5 through the matching adjustment hole 8 in the adjustable bearing plate 2. Since the fixing pin 5 is threadedly connected to the double connecting plate 1, it does not affect the rotation adjustment of the adjustable bearing plate 2, which is convenient for placing the bearing. At this time, according to the main shaft length requirement, after pre-adjusting the double connecting plate 1 to a suitable position, install the hydraulic jack 4 on the side of the double connecting plate 1. A limiting collar 7 is fitted onto the outer periphery of the top 4. In use, first rotate the two pull claws 3 to open them apart, and insert the main shaft. By applying external force to the two adjustable bearing plates 2, the two pull claws 3 clamp the outer end face of the bearing. At the same time, adjust the extension protrusions on both sides of the limiting collar 7 to extend into the slide groove 6. Then, align the output end of the hydraulic jack 4 with the end of the main shaft. Start the hydraulic jack 4. The output end of the hydraulic jack 4 applies a force to the main shaft. As the output end of the hydraulic jack 4 applies force to the main shaft, it pushes the main shaft to move. The bearing is held in place by the end of the pull claws 3 and cannot move, thus slowly pulling the bearing off the main shaft.

[0031] It should be noted that, in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such process, method, article, or apparatus.

[0032] Although embodiments of the present invention have been shown and described, 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. An adjustable fan bearing puller tool comprising a double web (1), characterized in that: The double connecting plate (1) has two adjustable shift bearing plates (2) installed inside. The two adjustable shift bearing plates (2) are arranged vertically at intervals. The side of the adjustable shift bearing plate (2) is provided with multiple adjustment holes (8). The multiple adjustment holes (8) are arranged equidistantly in the transverse direction. A pull claw (3) is fixedly installed on the side of the adjustable shift bearing plate (2) away from the double connecting plate (1). The double connecting plate (1) is threaded with a fixing pin (5). The fixing pin (5) passes through the adjustment hole (8) at the same time. The adjustable shift bearing plate (2) rotates around the adjustment hole (8). A hydraulic jack (4) is provided between the two adjustable shift bearing plates (2).

2. An adjustable fan bearing puller as defined in claim 1 wherein: A limiting collar (7) is slidably installed on the inner side of the double connecting plate (1), and the limiting collar (7) is sleeved on the outer surface of the hydraulic jack (4).

3. An adjustable fan bearing puller tool as in claim 1, wherein: The double connecting plate (1) is I-shaped and does not affect the adjustable bearing plate (2) from rotating to a certain extent.

4. An adjustable fan bearing puller as in claim 1, wherein: The inner side of the adjustable bearing plate (2) is provided with a sliding groove (6), and the extension protrusions on both sides of the limiting collar (7) extend to the inner side of the sliding groove (6).

5. An adjustable fan bearing puller tool as in claim 1, wherein: The pull claw (3) is L-shaped, and the ends of the two pull claws (3) extend inward and are inclined respectively.

6. An adjustable fan bearing puller as in claim 1, wherein: The diameter of one end of the fixing pin (5) is larger than the inner diameter, and the end with the larger diameter is located on the front of the double connecting plate (1).

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