A wind power main shaft bearing ball dismounting device

Abstract

This utility model belongs to the technical field of bearing disassembly equipment, specifically disclosing a ball bearing disassembly device for wind turbine main shafts. It includes a U-shaped support base with a threaded hole at the top. A threaded rod is threaded into the threaded hole, and a connecting plate is fixedly connected to one end of the threaded rod. L-shaped claws are hinged to both ends of the connecting plate via first pins. A support plate is fixedly connected to the inner wall of the U-shaped support base. The middle of the L-shaped claw is hinged to the support plate via a second pin. An arc-shaped groove matching the curvature of the ball is provided on the outer side of the other end of the L-shaped claw. A hinge frame is fixedly connected to the lower outer end of the U-shaped support base, and a sleeve is hinged to the hinge frame. A clamping plate is threaded into the sleeve. This utility model improves the stability of the device by providing a clamping plate and protects the balls and raceways from damage by providing an arc-shaped groove.

Description

Technical Field

[0001] This utility model belongs to the technical field of bearing disassembly equipment, specifically a ball bearing disassembly device for wind turbine main shafts. Background Technology

[0002] Wind turbine main shaft bearings are core components of wind turbine units, operating under harsh conditions and requiring regular maintenance, inspection, or replacement. Due to their enormous size (ball diameter can reach over 50mm), heavy weight, and tight installation space, coupled with strong constraints between the inner and outer rings and the cage, traditional methods (such as hammering and prying) are insufficient for safe and non-destructive removal of the balls. Existing technologies lack specialized tools for disassembling large wind turbine bearing balls, and these tools are prone to slippage during operation, potentially causing injury to operators or bearing components. Improper selection of the force point during ball disassembly can scratch the raceway or ball surface, causing irreversible damage. Therefore, a main shaft bearing ball disassembly device that avoids slippage and distributes force more evenly is needed. Utility Model Content

[0003] To address the above technical problems, this utility model provides a spindle bearing ball removal device that can prevent slippage and distribute force more evenly, thus solving the problems of slippage and uneven force distribution in existing ball removal devices.

[0004] To solve the above technical problems, the technical solution of this utility model is as follows: a ball bearing disassembly device for wind turbine main shafts, including a U-shaped support base, the two sides of which are arc-shaped, and a threaded hole on the top of the U-shaped support base. A threaded rod is threadedly connected to the threaded hole. A handle is fixedly connected to one end of the threaded rod, and a connecting plate is fixedly connected to the other end. L-shaped claws are hinged to both ends of the connecting plate through first pins. A support plate is fixedly connected to the inner side wall of the U-shaped support base. The middle part of the L-shaped claw is hinged to the support plate through a second pin. An arc-shaped groove matching the curvature of the ball is provided on the outer side of the other end of the L-shaped claw, forming a clamping jaw for holding the ball. A hinge frame is fixedly connected to the lower outer side of the U-shaped support base. A sleeve is hinged to the hinge frame, and a clamping plate is threadedly connected to the sleeve.

[0005] Furthermore, the clamping plate includes a round rod, the bottom of which is fixedly connected to a foot plate, and the other end of the foot plate is set in an arc shape.

[0006] Furthermore, the threaded hole and the sleeve are both provided with internal threads, and the threaded rod and the round rod are provided with external threads, and the round rod is threadedly connected to the sleeve.

[0007] Furthermore, one end of the L-shaped claw is provided with a first hole for the first pin to pass through, and a second hole is provided at the corner for the second pin to pass through.

[0008] This utility model has the following advantages compared with the prior art:

[0009] 1. This utility model, by setting L-shaped claws, can use the lever principle to squeeze the ball out of the cutter. By setting an arc-shaped groove that matches the ball, it can avoid damage to the ball surface and the cutter, thus improving the disassembly quality. The clamping plate can improve the stability of the device, prevent slippage during operation, and improve the safety performance of the device.

[0010] 2. This utility model can achieve clamping of the clamping plate by setting the external thread of the round rod to cooperate with the sleeve, and can make the L-shaped claw rotate around the second pin by setting the second hole. Attached Figure Description

[0011] Figure 1 This is a schematic diagram of the structure of this utility model.

[0012] Figure 2 This is a top view of the structure of this utility model.

[0013] Figure 3 This is a schematic diagram of the structure of the L-shaped chuck of this utility model.

[0014] Figure 4 This is a top view of the clamping plate of this utility model.

[0015] In the diagram: 1. U-shaped support base, 2. Threaded rod, 3. Handle, 4. Threaded hole, 5. Connecting plate, 6. L-shaped claw, 61. First hole, 62. Second hole, 7. Support plate, 8. Hinge frame, 9. Sleeve, 10. Clamping plate, 101. Round rod, 102. Foot plate, 11. First pin, 12. Second pin, 13. Arc-shaped groove. Detailed Implementation

[0016] The present invention will be further described below with reference to the accompanying drawings.

[0017] like Figures 1 to 4The device shown is a ball bearing removal device for a wind turbine main shaft. It includes a U-shaped support 1. To allow the bottom sides of the U-shaped support 1 to contact the outer ring of the bearing, the sides are curved, matching the curvature of the outer ring. A threaded hole 4 is provided at the top of the U-shaped support 1 to allow the threaded rod 2 to pass through. The threaded rod 2 is threaded into the threaded hole 4. To reduce labor intensity, a handle 3 is fixedly connected to one end of the threaded rod 2. To allow the L-shaped pawl 6 to open outwards by moving the threaded rod 2 downwards, the other end of the threaded rod 2 is fixedly connected to the middle of a connecting plate 5. The connecting plate 5 extends outwards at both ends. To prevent motion interference when the threaded rod 2 pushes the connecting plate 5 downwards, L-shaped pawls 6 are hinged to both ends of the connecting plate 5 via a first pin 11. The L-shaped pawls 6 rotate around a second pin 12. The arc-shaped groove 13 can squeeze the ball, so that the ball receives an upward lifting force and an outward squeezing force, thereby removing the ball. A support plate 7 is fixedly connected to the inner wall of the U-shaped support base 1. The middle part of the L-shaped claw 6 is hinged to the support plate 7 through the second pin 12. When the threaded rod 2 moves downward, the L-shaped claw 6 rotates around the second pin 12. In order to better remove the ball and avoid damage to the ball surface and raceway, and to fit perfectly with the ball, an arc-shaped groove 13 matching the curvature of the ball is provided on the outer side of the other end of the L-shaped claw 6, which together form a jaw that holds the ball. After the arc-shaped groove 13 clamps the ball, the ball is squeezed out as the L-shaped claw 6 rotates. In order to improve the stability of the device and prevent slippage during the disassembly of the ball and cause accidents, a hinge frame 8 is fixedly connected to the lower outer side of the U-shaped support base 1. A sleeve 9 is hinged to the hinge frame 8, and a clamping plate 10 is threadedly connected to the inner side of the sleeve 9.

[0018] In order to be able to adjust automatically according to bearings of different thicknesses, the clamping plate 10 includes a round rod 101, and a foot plate 102 is fixedly connected to the bottom of the round rod 101. The other end of the foot plate 102 is set to an arc shape. The arc shape of the foot plate 102 can better fit the bottom of the outer ring of the bearing.

[0019] In order to achieve linkage and locking of the device, internal threads are provided in the threaded hole 4 and the sleeve 9, and external threads are provided on the threaded rod 2 and the round rod 101. The round rod 101 is threadedly connected to the sleeve 9. The round rod 101 is provided with sufficient length, which can be adjusted by screwing the round rod 101 into the sleeve 9.

[0020] In order to enable the L-shaped chuck 6 to rotate, a first hole 61 is provided at one end of the L-shaped chuck 6 for the first pin 11 to pass through, and a second hole 62 is provided at the corner for the second pin 12 to pass through.

[0021] The specific working process of this utility model is as follows:

[0022] To remove the balls from the spindle bearing, first place the bottom sides of the U-shaped support 1 against the upper surface of the bearing outer ring. Then, manually adjust the threaded rod 2 up and down to engage the arc-shaped grooves 13 of the L-shaped chuck 6 with the sides of the balls. With the sleeve 9 naturally vertical and downward, screw the round rod 101 into the sleeve 9 until the foot plate 102 is very close to the lower surface of the bearing outer ring. At this point, ensure that the arc-shaped side of the foot plate 102 is aligned with the bearing shaft. Then, turn the handle 3 to rotate the threaded rod 2. The downward movement pushes the connecting plate 5 downward. At this time, one end of the L-shaped claw 6 is subjected to a downward force, and then rotates around the second pin 12. Utilizing the lever principle, the two arc-shaped grooves 13 expand outward, continuously squeezing one side of the ball. The ball receives the upward lifting force and outward squeezing force provided by the arc-shaped grooves 13. As the threaded rod 2 descends, it squeezes the ball out of the raceway. In this embodiment, by setting the arc-shaped grooves, damage to the ball surface and the cutter can be avoided. By setting the sleeve 9 and the clamping plate 10, the stability of the device can be improved.

Claims

1. A ball bearing removal device for wind turbine main shaft, comprising a U-shaped support (1), wherein the two sides of the U-shaped support (1) are arc-shaped, characterized in that: The top of the U-shaped support base (1) is provided with a threaded hole (4), and a threaded rod (2) is threadedly connected to the threaded hole (4). One end of the threaded rod (2) is fixedly connected to a handle (3), and the other end is fixedly connected to a connecting plate (5). Both ends of the connecting plate (5) are respectively hinged to L-shaped claws (6) by a first pin (11). A support plate (7) is fixedly connected to the inner side wall of the U-shaped support base (1). The middle part of the L-shaped claw (6) is hinged to the support plate (7) by a second pin (12). The outer side of the other end of the L-shaped claw (6) is provided with an arc-shaped groove (13) that matches the curvature of the ball, which together form a jaw that holds the ball. The lower outer side of the U-shaped support base (1) is fixedly connected to a hinge frame (8). A sleeve (9) is hinged to the hinge frame (8), and a clamping plate (10) is threadedly connected to the sleeve (9).

2. The ball bearing removal device for wind turbine main shaft according to claim 1, characterized in that: The clamping plate (10) includes a round rod (101), and a foot plate (102) is fixedly connected to the bottom of the round rod (101). The other end of the foot plate (102) is set in an arc shape.

3. The ball bearing removal device for wind turbine main shaft according to claim 2, characterized in that: The threaded hole (4) and the sleeve (9) are both provided with internal threads, and the threaded rod (2) and the round rod (101) are provided with external threads. The round rod (101) is threadedly connected to the sleeve (9).

4. The ball bearing removal device for wind turbine main shaft according to claim 1, characterized in that: The L-shaped claw (6) has a first hole (61) at one end for the first pin (11) to pass through, and a second hole (62) at the corner for the second pin (12) to pass through.

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