Dismounting tool for tubular shaft bearing of wind power gear box

Abstract

The utility model provides a dismounting tool for a tubular shaft bearing of a wind power gear box. The bearing of a tubular shaft is installed in a bearing hole in a cover plate. A main cross beam of which the middle part is provided with a vertical threaded hole is placed on the cover plate and is positioned above the bearing; the tool buckle is hinged with more than three clamping jaws; the inner side of the middle of each clamping jaw is provided with an upward inner side inclined face, and the lower end of each clamping jaw is provided with an outward hook part. The pressing blocks are located between the clamping jaws, and the conical surfaces of the pressing blocks make contact with the inner side inclined faces of the clamping jaws. The locking nut is placed on the main cross beam, and the tool bolt sequentially penetrates through the locking nut, a vertical threaded hole in the center of the main cross beam, a threaded hole in the center of a body of the tool buckle and a threaded hole in the center of the pressing block in a threaded fit mode. The clamping jaw penetrates through a center hole of the bearing, and the hook portion of the clamping jaw makes contact with the lower end face of the bearing. The tool is high in universality, cost-saving, safe and capable of avoiding the hidden danger of galling of the bearing hole of the cover plate caused by uneven stress in the dismounting process of the tubular shaft bearing.

Description

Technical Field

[0001] This utility model relates to the field of wind turbine gearbox repair, specifically to a disassembly tool for the bearing of the wind turbine gearbox tube shaft. Background Technology

[0002] Due to its advantages such as being pollution-free and having low construction costs, wind power generation has experienced rapid development in recent years.

[0003] The tube shaft in the gearbox plays a crucial role in wind power generation, serving as a key component to ensure the normal operation and efficient power generation of the wind turbine. Its quality and reliability directly affect the performance and operating efficiency of the wind turbine. One side of the tube shaft is connected to the planetary carrier of the gearbox via bolts, while the other side is directly connected to the slip ring via a flange. To ensure the reliability of the tube shaft's rotation within the gearbox, a tube shaft bearing is installed on the side of the tube shaft near the slip ring. In some models, the tube shaft bearing is mounted on a cover plate. If this bearing is found to be damaged during gearbox repairs, it needs to be removed and replaced with a new one. Due to the interference fit between the outer ring of the tube shaft bearing and the bearing hole on the cover plate, direct removal is somewhat difficult. Typically, this bearing is removed using force. If uneven force is applied during removal, it can easily cause scratches in the bearing hole of the cover plate, affecting the bearing's performance. If the scratches are severe, the cover plate itself may also be rendered unusable.

[0004] The technical solution of existing technology 1 is as follows:

[0005] Use calipers to remove the bearing from the bearing hole in the cover plate.

[0006] The disadvantages of existing technology 1 are:

[0007] Removing the bearing with calipers can easily lead to uneven force on the bearing. If too much force is applied, it can easily scratch the bearing hole on the cover plate, thus affecting the secondary use of the cover plate.

[0008] The technical solution of existing technology 2 is as follows:

[0009] Using a flame torch, heat the bearing housing part of the cover plate until the cover plate is heated to a certain degree, then remove the bearing by tapping.

[0010] The disadvantages of the existing technology 2 are:

[0011] 1. The flame from the blowtorch is very hot, and if it is left on for too long, it will affect the metal properties of the cover plate, thus affecting its secondary use.

[0012] 2. Manually using a flame torch poses certain safety hazards. Improper operation can lead to burns for workers. Utility Model Content

[0013] This utility model provides a disassembly fixture for the tube shaft bearing of a wind turbine gearbox. Its purpose is to overcome the shortcomings of the existing technology, with strong versatility, cost saving, safety, and to avoid the hidden danger of uneven force during the disassembly of the tube shaft bearing causing roughening of the bearing hole on the cover plate.

[0014] The technical solution adopted by this utility model to solve its technical problem is:

[0015] A disassembly fixture for the bearing of a wind turbine gearbox tube shaft, wherein the bearing of the tube shaft is installed in the bearing hole on the cover plate; characterized in that:

[0016] The main crossbeam with a vertical threaded hole in the middle is placed on the cover plate and located above the bearing;

[0017] The tooling buckle has a threaded hole at its center;

[0018] The outer periphery of the tooling buckle is hinged with three or more jaws;

[0019] The inner side of the middle part of the chuck has an upward-facing inner slope, and the lower end of the chuck has an outward-facing hook.

[0020] The main body of the tooling clip is located below the main crossbeam and above the bearing;

[0021] The lower part of the clamping block has a conical surface, and a threaded hole is provided at the center of the top surface of the clamping block;

[0022] The clamping block is positioned between the three or more jaws, with the conical surface of the clamping block contacting the inner inclined surface of the jaw, thereby allowing the clamping block to rest on the jaw;

[0023] The locking nut is placed on the main crossbeam, corresponding to the vertical threaded hole in the center of the main crossbeam. The tooling bolts are threaded through the locking nut, the vertical threaded hole in the center of the main crossbeam, the threaded hole in the center of the tooling buckle, and the threaded hole in the center of the clamping block in sequence.

[0024] The three or more jaws pass through the center hole of the bearing, and the hooks of the jaws contact the lower end face of the bearing.

[0025] Two columns are placed on the end faces of the cover plate on both sides of the bearing, and the main crossbeam connected to the two columns by side crossbeams is located above the bearing.

[0026] A side beam is welded to each side of the main beam;

[0027] A horizontal through hole is made at the top of the column, and a vertical threaded hole is made at the top end face of the column. The vertical threaded hole and the horizontal through hole are connected to each other.

[0028] One end of the side beam passes through the horizontal through hole of the column, and the locking screw is screwed into the vertical threaded hole of the column. The locking screw contacts the side beam and presses the side beam onto the column, thus fixing the side beam to the column.

[0029] The tooling buckle extends outward from its outer circumference to form three evenly distributed hinge parts. Each hinge part has an opening. The pawl is inserted into the opening, and the bolt is passed through the through holes on both sides of the opening of the hinge part and the through hole above the pawl in sequence. The round nut is installed on the bolt, and the pawl is hinged to the tooling buckle with the bolt as the hinge axis.

[0030] The advantages of this utility model are:

[0031] 1. Simple structure, easy to process and manufacture;

[0032] 2. It has strong versatility and can be applied to the disassembly of tubes, shafts and bushings within a certain range, saving costs;

[0033] 3. By disassembling the tube shaft bearing through uniform force, the risk of roughening of the bearing hole in the cover plate is reduced, thus ensuring the quality of the cover plate.

[0034] 4. It can be operated by a single person, effectively saving labor costs. Attached Figure Description

[0035] The present invention will be further described below with reference to the accompanying drawings and embodiments.

[0036] Figure 1 This is a diagram showing the effect of the tooling of this utility model being installed on the cover plate.

[0037] Figure 2 for Figure 1 A partial view;

[0038] Figure 3 This is a partial view of BB in Figure 1. Detailed Implementation

[0039] To more clearly illustrate the technical solution of this utility model, the accompanying drawings used in the description will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other embodiments can be obtained based on these drawings without creative effort. To facilitate understanding of this utility model, a more detailed description of this utility model will be provided below in conjunction with the accompanying drawings and specific embodiments.

[0040] It should be noted that when an element is described as being "fixed to" another element, it can be directly on the other element, or one or more intermediate elements may exist between them. When an element is described as being "connected" to another element, it can be directly connected to the other element, or one or more intermediate elements may exist between them. The terms "upper," "lower," "inner," "outer," "bottom," etc., used in this specification indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of the present invention. Furthermore, the terms "first," "second," "third," etc., are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0041] like Figure 1 , Figure 2 , Figure 3 As shown:

[0042] This utility model is a disassembly tool for the bearing of the tube shaft of a wind turbine gearbox.

[0043] The bearing 2 of the tube shaft is installed in the bearing hole on the cover plate 1.

[0044] The column 3 is a regular cuboid. A horizontal through hole 31 is opened in the upper part of the column 3, and a vertical threaded hole 32 is opened on the upper end face of the column 3. The vertical threaded hole 32 and the horizontal through hole 31 are connected to each other.

[0045] The side beam 4 is a cylinder. One end of the side beam 4 is passed through the horizontal through hole 31 of the column 3, and the locking screw 6 is screwed into the vertical threaded hole 32 of the column 3. The locking screw 6 is continuously tightened until it contacts the side beam 4. The locking screw 6 presses the side beam 4 onto the column 3, thus fixing the side beam 4 to the column 3.

[0046] The main crossbeam 5 is a regular cuboid. The cross-sectional area of ​​the main crossbeam 5 is larger than that of the side crossbeams 4. A side crossbeam 4 is welded to each side of the main crossbeam 5. A vertical threaded hole 51 is pre-drilled at the center of the main crossbeam 5.

[0047] Two columns 3 are placed on the end faces of the cover plate 1 on both sides of the bearing 2, and the main crossbeam 5, which is connected to the two columns 3 by side crossbeams 4, is located above the bearing 2.

[0048] Since the side beam 4 is fixed by locking screws 6, the installation position of the column 3 on the side beam 4 can be adjusted at any time according to the cover plate 1 with different structures, thus making the tooling more versatile.

[0049] The main body of the tooling buckle 9 is a circular plate with a coaxial threaded hole 90 in the center.

[0050] Three jaws 11 are hinged to the body of the tooling buckle 9.

[0051] The tooling clip 9 extends outward from its circumference to form three evenly distributed hinge portions 91. Each hinge portion 91 has an opening 92 for housing the claw 11. Through holes 911 are pre-machined on both sides of the opening 92 in each hinge portion 91. Similarly, through holes 111 are pre-machined on the upper part of the claw 11. The claw 11 is inserted into the opening 92, and the pre-machined through holes 111 on the claw 11 are aligned with the through holes 911 on both sides of the opening 92. Then, the bolt 10 is passed through these three through holes (one through hole 111 and two through holes 911) in sequence. The diameter of the bolt 10 is smaller than the diameter of these three through holes (one through hole 111 and two through holes 911). Finally, a round nut 20 is installed on the threaded end of the bolt 10 protruding from the through hole 911. By tightening the round nut 20, the bolt 10 is fixed to the hinge portion 91. The claw 11 is then hinged to the tooling clip 9 with the bolt 10 as the hinge axis.

[0052] The chuck 11 has an upward-facing inner slope 112 on the inner side of its middle portion, and an outward-facing hook 113 at the lower end of the chuck 11.

[0053] Since the mounting angle of the chuck 11 on the tooling clip 9 is adjustable, this tooling can be used for disassembling tube shaft bearings within a certain range.

[0054] The main body of the tooling clip 9 is located below the main crossbeam 5 and above the bearing 2.

[0055] The upper part of the clamping block 12 is a cylinder, and the lower part has a conical surface 122. A coaxial threaded hole 122 is provided at the center of the top surface of the clamping block 12.

[0056] The clamping block 12 is positioned between the three jaws 11, with the conical surface 122 contacting the inner inclined surface 112 of the jaws 11, so that the clamping block 12 rests on the three jaws 11.

[0057] Place the locking nut 8 on the main crossbeam 5, corresponding to the vertical threaded hole 51 at the center of the main crossbeam 5, and thread the tooling bolt 7 through the locking nut 8 and the vertical threaded hole 51 in sequence.

[0058] The tooling bolt 7 passes through the threaded hole 90 in the center of the tooling clip 9 and is finally screwed into the threaded hole 121 in the center of the clamping block 12.

[0059] After installation, pass the three jaws 91 through the center hole of the bearing 2, and make the hooks 113 of the jaws 11 contact the lower end face of the bearing 2.

[0060] By turning the tooling screw 7, the clamping block 12 is moved downwards. The conical surface 122 of the clamping block 12 presses against the inner inclined surface 112 of the chuck 11. This allows the chuck 11 to rotate outwards around the hinge axis (bolt 10). Due to the squeezing action of the clamping block 12, the chuck 11 will not retract during the upward pulling process. After the chuck is opened, the torque wrench is used to turn the locking nut 8. The tooling bolt 7 is subjected to an upward pulling force, which finally pulls the bearing 2 out of the bearing hole of the cover plate 1.

[0061] Existing methods for disassembling the pipe shaft bearing involve either forceful removal with calipers or heating with a blowtorch. Both methods not only pose risks to the quality of the cover plate components themselves but also create safety hazards for the operators.

[0062] This utility model's tooling, through purely mechanical disassembly, not only effectively ensures the quality of the cover plate itself and prevents scratches in the bearing holes, but also allows for single-person operation without posing a hazard to the operator. This utility model's tooling is applicable to the disassembly of pipe shaft bearings within a certain size range, eliminating the need for switching tooling. Furthermore, the tooling's three evenly distributed jaws contact the lower end face of the bearing, resulting in more even force distribution and saving time and effort during operation.

[0063] The various embodiments described in this specification are presented in a progressive manner, with each embodiment focusing on its differences from other embodiments. Similar or identical parts between embodiments can be referred to interchangeably. The above description of the disclosed embodiments enables those skilled in the art to implement or use this invention. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of this invention. Therefore, this invention is not to be limited to the embodiments shown herein, but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. A disassembly fixture for the bearing of a wind turbine gearbox tube shaft, wherein the bearing of the tube shaft is installed in a bearing hole on a cover plate; characterized in that: A main crossbeam with a vertical threaded hole in the center is placed on a cover plate and above the bearing; a threaded hole is opened in the center of the tooling buckle body; three or more jaws are hinged to the outer periphery of the tooling buckle body; the inner side of the middle part of the jaw has an upward-facing inner slope, and the lower end of the jaw has an outward-facing hook; the tooling buckle body is located below the main crossbeam and above the bearing; the lower part of the clamping block has a conical surface, and a threaded hole is opened in the center of the top surface of the clamping block; the clamping block is located between the three or more jaws, and the conical surface of the clamping block contacts the inner slope of the jaw, so that the clamping block is mounted on the jaw; a locking nut is placed on the main crossbeam, corresponding to the vertical threaded hole in the center of the main crossbeam, and the tooling bolt passes through the locking nut, the vertical threaded hole in the center of the main crossbeam, the threaded hole in the center of the tooling buckle body, and the threaded hole in the center of the clamping block in sequence with thread engagement; the three or more jaws pass through the center hole of the bearing, and the hook of the jaw contacts the lower end face of the bearing.

2. The wind turbine gearbox pipe shaft bearing dismounting tool according to claim 1, characterized in that: Two columns are placed on the end faces of the cover plate on both sides of the bearing, and the main crossbeam connected to the two columns by side crossbeams is located above the bearing.

3. The wind turbine gearbox pipe shaft bearing dismounting tool according to claim 2, characterized in that: A side crossbeam is welded to each side of the main crossbeam; a horizontal through hole is opened at the top of the column, and a vertical threaded hole is opened at the top end of the column, which is connected to the horizontal through hole; one end of the side crossbeam passes through the horizontal through hole of the column, and a locking screw is screwed into the vertical threaded hole of the column. The locking screw contacts the side crossbeam and presses the side crossbeam onto the column, thereby fixing the side crossbeam to the column.

4. The wind turbine gearbox pipe shaft bearing dismounting tool according to claim 1, characterized in that: The tooling buckle extends outward from its outer circumference to form three circumferentially distributed hinges. Each hinge has an opening. The pawl is inserted into the opening, and the bolt is passed through the through holes on both sides of the opening of the hinge and the through hole above the pawl in sequence. The round nut is installed on the bolt, and the pawl is hinged to the tooling buckle with the bolt as the hinge axis.

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