Dismounting tool for outer ring of inner bearing

Abstract

The utility model relates to the field of bearing disassembly, in particular to an inner bearing outer ring disassembly tool which comprises a first ejector rod, an ejection part, a second ejector rod and a drawing rod, a first through hole is formed in the first ejector rod in the length direction, and the ejection part capable of transversely moving is arranged in the first through hole. The two ends of the ejection part are matched with a ball groove of a bearing outer ring, a second through hole communicated with the first through hole is formed in the outer side wall of the first ejection rod, a second ejection rod is inserted into the second through hole, the bottom end of the second ejection rod extends into the first through hole, and the ejection part is extruded towards the two sides. The drawing rod is fixedly connected with the first ejector rod and used for pulling out the damaged inner bearing outer ring. The outer ring of the inner bearing can be easily taken out.

Description

Technical Field

[0001] The utility model relates to the field of bearing disassembly, in particular to a tool for disassembling the outer ring of an inner bearing. Background Art

[0002] Bearings are essential components that support rotating mechanical parts. These include linear bearings and rolling bearings. Rolling bearings primarily consist of an outer ring, an inner ring, and a cage and rolling elements evenly spaced between them. The inner ring rotates with the shaft, while the outer ring supports the bearing housing. The rolling elements provide rotational lubrication.

[0003] Due to wear, corrosion, seal damage and other reasons, bearings will be damaged over time during use, especially bearings with internal bearing structures such as end covers and sleeves. After damage, the outer ring of the bearing is embedded in the bearing base. Due to the limitations of actual on-site construction conditions, ordinary mechanical methods cannot remove the outer ring of the inner bearing because there is no fulcrum on the outer ring. The disassembly of the bearing outer ring requires a lot of manpower and material resources. Summary of the Invention

[0004] The utility model aims to solve the problem that the outer ring of the inner bearing cannot be removed when the end cover, the shaft sleeve and other bearings of the inner bearing structure fall apart. The utility model provides an inner bearing outer ring disassembly tool, which can easily remove the inner bearing outer ring.

[0005] In order to achieve the above purpose, the technical solution of the utility model is:

[0006] A tool for disassembling the outer ring of an inner bearing comprises a first push rod, an ejection portion, a second push rod and a pulling rod, wherein a first through hole is provided in the first push rod along the length direction, a laterally movable ejection portion is provided in the first through hole, both ends of the ejection portion match the ball rolling groove of the outer ring of the bearing, a second through hole communicating with the first through hole is provided on the outer side wall of the first push rod, a second push rod is inserted into the second through hole, the bottom end of the second push rod extends into the first through hole, and the ejection portion is squeezed out to both sides, and the pulling rod is fixedly connected to the first push rod and is used to pull out the damaged outer ring of the inner bearing.

[0007] Furthermore, the length of the first push rod and the distance between the inner diameter of the bearing outer ring are not greater than 4 mm. When in use, the first push rod and the center of the bearing are located on the same straight line.

[0008] Furthermore, the bottom end of the second push rod is tapered, the length of the second push rod is greater than the height of the first push rod, and the second push rod contacts the ejection portion, occupies the ejection portion space, and causes the ejection portion to move to both sides.

[0009] Furthermore, the second through hole is perpendicular to the direction of the first through hole and is arranged in the middle of the first through hole, that is, the second ejector rod is perpendicular to the first ejector rod, and the ejection portion is subjected to equal force on both sides.

[0010] Furthermore, the second through hole is a threaded hole, and the outer periphery of the second push rod is provided with an external thread matching the second through hole. The second push rod is threadedly connected to the second through hole, and when in use, the second push rod is screwed into the second through hole.

[0011] Furthermore, the second through hole is a light hole, a nut is fixedly arranged above the second through hole, and the second push rod matches the nut. The second push rod is threadedly connected to the nut, extending the depth of the second through hole and making the connection between the second push rod and the first push rod more stable.

[0012] Furthermore, the ejector portion includes a plurality of identical balls that match the ball grooves of the bearing outer ring. The balls are an even number and are symmetrically arranged on both sides of the second ejector rod. The second ejector rod pushes into the gap between the balls, causing the balls on both sides of the second ejector rod to move toward each other. The balls can be steel balls from a damaged bearing.

[0013] Furthermore, the end of the pulling rod close to the first push rod is U-shaped, the two legs of the U-shaped end are symmetrically arranged on both sides of the second push rod, and the end of the pulling rod away from the first push rod is T-shaped. The pulling rod is convenient for applying force.

[0014] Furthermore, a pulling hammer is sleeved on the pulling rod and is movably connected to the pulling rod. The pulling hammer is slid so that the pulling hammer hits the pulling rod under the action of inertia, thereby pulling out the outer ring of the bearing.

[0015] Through the above technical solution, the beneficial effects of the utility model are:

[0016] The utility model provides an ejection part in the first ejector rod, which includes a plurality of identical balls. The balls match the ball grooves of the bearing outer ring. When the balls are inserted into the ball grooves of the bearing outer ring, force can be applied to pull out the bearing outer ring. The utility model can reuse the steel balls in the damaged bearing, save energy and reduce production costs.

[0017] The utility model presses the second ejector pin into the first ejector pin to occupy the space in the first through hole, thereby squeezing out the ejection portion. The second ejector pin is connected to the first ejector pin by a threaded connection, and the ejection portion can be squeezed out by screwing the second ejector pin. The operation is simple, convenient and quick. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 It is a structural diagram of the utility model;

[0019] Figure 2 It is a cross-sectional view of the utility model;

[0020] Figure 3 It is a perspective view of the first push rod of the utility model;

[0021] The numbers in the accompanying drawings are: 1 is the first push rod, 11 is the first through hole, 12 is the second through hole, 2 is the ejection part, 3 is the second push rod, 4 is the pulling rod, and 5 is the pulling hammer. DETAILED DESCRIPTION

[0022] The present invention will be further described below with reference to the accompanying drawings and specific embodiments:

[0023] like Figures 1 to 3 As shown, this embodiment provides a tool for disassembling the outer ring of an inner bearing, including a first push rod 1, an ejection part 2, a second push rod 3 and a pulling rod 4. A first through hole 11 is provided in the first push rod 1 along the length direction, and a laterally movable ejection part 2 is provided in the first through hole 11. The two ends of the ejection part 2 match the ball groove of the outer ring of the bearing. A second through hole 12 communicating with the first through hole 11 is provided on the outer wall of the first push rod 1, and the second push rod 3 is inserted into the second through hole 12. The bottom end of the second push rod 3 extends into the first through hole 11 and squeezes the ejection part 2 to both sides. The pulling rod 4 is fixedly connected to the first push rod 1 and is used to pull out the damaged outer ring of the inner bearing.

[0024] Both ends of the first push rod 1 are arc-shaped, and the length of the first push rod 1 is slightly smaller than the inner diameter of the bearing outer ring. Specifically, the distance between the length of the first push rod 1 and the inner diameter of the bearing outer ring is not more than 4 mm. When in use, the first push rod 1 and the center of the bearing are located on the same straight line. As an implementable embodiment, the first push rod 1 is a steel pipe, the inner diameter of the steel pipe is larger than the inner diameter of the ball rolling groove, and the wall thickness of the steel pipe is not less than two-thirds of the inner diameter of the ball rolling groove.

[0025] The bottom end of the second push rod 3 is conical, and the length of the second push rod 3 is greater than the height of the first push rod 1. Preferably, the second through hole 12 is perpendicular to the direction of the first through hole 11, the second push rod 3 is perpendicular to the first push rod 1, and the second through hole 12 is connected to the first through hole 11 and is arranged in the middle position of the first through hole 11.

[0026] Specifically, the second push rod 3 is a conical bolt, and the second push rod 3 is threadedly connected to the second through hole 12. When in use, the second push rod 3 is screwed into the second through hole 12. As an embodiment, the second through hole 12 is a threaded hole, and the outer periphery of the second push rod 3 is provided with an external thread matching the second through hole 12; as an embodiment, the second through hole 12 is a smooth hole, and no thread is provided in the second through hole 12. A nut is fixedly provided above the second through hole 12, and the second push rod 3 matches the nut.

[0027] The ejection part 2 includes a plurality of identical balls, which match the ball grooves of the outer ring of the bearing. The balls are in an even number and are symmetrically arranged on both sides of the second ejector rod 3. Preferably, the centers of the plurality of balls and the center of the damaged bearing are located on the same straight line, and the second ejector rod 3 is located at the center of the bearing. In order to save resources and reduce waste, the balls can be steel balls in a damaged bearing or a disintegrated bearing.

[0028] A pulling rod 4 is fixedly arranged on the first push rod 1, and the pulling rod 4 and the second push rod 3 are located on the same side of the first push rod 1. The pulling rod 4 is U-shaped at one end close to the first push rod 1, and the two legs of the U-shaped end are symmetrically arranged on both sides of the second push rod 3. The pulling rod 4 is T-shaped at one end away from the first push rod 1, and the T-shaped end is fixedly connected to the U-shaped end. In order to save effort, a pulling hammer 5 is provided on the pulling rod 4, and the pulling hammer 5 is arranged between the T-shaped end and the U-shaped end. The pulling hammer 5 is a hollow cylinder, and the pulling hammer 5 is slidingly connected to the pulling rod 4.

[0029] When in use, the tool is placed into the inner ring of the bearing, and the second push rod 3 is pushed into the first through hole 11. The second push rod 3 occupies the space in the first through hole 11, so that the ejection part 2 in the first through hole 11 is squeezed out to the exits at both ends. The ejection part 2 includes a plurality of balls. The balls at both ends of the first push rod 1 are ejected from both ends of the first through hole 11, and the spherical surface is stuck in the ball groove of the outer ring of the bearing. At this time, the pulling rod 4 is pulled outward, and the ejection part 2 drives the outer ring of the bearing to separate from the bearing base; when a pulling hammer 5 is provided on the pulling rod 4, the pulling hammer 5 is slid outward so that the pulling hammer 5 hits the tail of the pulling rod 4 under the action of inertia, and relies on inertia to bring out the first push rod 1 and the outer ring of the bearing.

[0030] The embodiments described above are only preferred embodiments of the present invention and do not limit the scope of implementation of the present invention. Therefore, any equivalent changes or modifications made based on the structure, features and principles described in the patent scope of the present invention should be included in the scope of the patent application of the present invention.

Claims

1. A tool for removing the outer ring of an inner bearing, characterized in that: The invention comprises a first push rod (1), an ejection portion (2), a second push rod (3) and a pulling rod (4), wherein a first through hole (11) is provided in the first push rod (1) along the length direction, a laterally movable ejection portion (2) is provided in the first through hole (11), both ends of the ejection portion (2) match the ball groove of the bearing outer ring, a second through hole (12) is provided on the outer wall of the first push rod (1) and is connected to the first through hole (11), a second push rod (3) is inserted into the second through hole (12), the bottom end of the second push rod (3) extends into the first through hole (11) and squeezes the ejection portion (2) to both sides, and the pulling rod (4) is fixedly connected to the first push rod (1) and is used to pull out the damaged inner bearing outer ring.

2. The inner bearing outer ring removal tool according to claim 1, characterized in that: The length of the first push rod (1) and the distance between the inner diameter of the bearing outer ring are no more than 4 mm.

3. The inner bearing outer ring removal tool according to claim 1, characterized in that: The bottom end of the second top rod (3) is tapered, and the length of the second top rod (3) is greater than the height of the first top rod (1).

4. The inner bearing outer ring removal tool according to claim 1, characterized in that: The second through hole (12) is perpendicular to the direction of the first through hole (11), and the second through hole (12) is arranged in the middle of the first through hole (11).

5. The inner bearing outer ring removal tool according to claim 1, characterized in that: The second through hole (12) is a threaded hole, and the outer periphery of the second push rod (3) is provided with an external thread matching the second through hole (12).

6. The inner bearing outer ring removal tool according to claim 1, characterized in that: The second through hole (12) is a light hole, a nut is fixedly arranged above the second through hole (12), and the second push rod (3) matches the nut.

7. The inner bearing outer ring removal tool according to claim 1, characterized in that: The ejection portion (2) comprises a plurality of identical balls, the balls matching the ball grooves of the bearing outer ring, the balls being an even number and symmetrically arranged on both sides of the second ejector rod (3).

8. The inner bearing outer ring removal tool according to claim 1, characterized in that: The end of the pulling rod (4) close to the first push rod (1) is U-shaped, and the two legs of the U-shaped end are symmetrically arranged on both sides of the second push rod (3). The end of the pulling rod (4) away from the first push rod (1) is T-shaped.

9. The inner bearing outer ring removal tool according to claim 1, characterized in that: A pulling hammer (5) is sleeved on the pulling rod (4).

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