Isolation block structure four-point contact ball turntable bearing disassembling tool
By designing a four-point contact ball turntable bearing disassembly tooling with peeling claws and guide claws, the problem of disassembly inconvenient disassembly in the prior art is solved, and more efficient removal of steel balls and isolation blocks is achieved, reducing labor intensity and time consumption .
Patent Information
- Application Number
- CN202420837728.9
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-04-22
- Publication Date
- 2025-01-17
- Estimated Expiration
- 2034-04-22
AI Technical Summary
When the existing four-point contact ball turntable bearing is disassembled, the steel ball and the isolation block are easily stuck due to interference, and the high viscosity of the grease causes the steel ball and the isolation block to adhere, resulting in inconvenience in disassembly, time-consuming and labor-intensive. Large, low work efficiency.
A four-point contact ball rotor bearing disassembly tooling for isolating block structure is designed, including a hollow cylinder, a peeling claw and a guide claw. The peeling claw and a guide claw are distributed on both sides of the central axis of the cylinder. The peeling claws are short and the guide claws are long. It can be bent by external force to guide and push out the steel ball or isolation block.
By optimizing the structural design, the labor intensity of workers is reduced, the disassembly efficiency is improved, the difficulties caused by interference jamming and adhesion are avoided, and the removal process of steel balls and isolation blocks is simplified.
Smart Images
Figure CN222360135U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of tooling for bearings, in particular to a disassembling tooling for a four-point contact ball turntable bearing with an isolation block structure. Background Art
[0002] In the prior art, a four-point contact ball slewing bearing generally includes the following structure: alternately distributed isolation blocks and steel balls are installed between the raceway surfaces of the bearing outer ring and the bearing inner ring. In order to facilitate the installation of the isolation blocks and the steel balls, a reserved hole is provided on the bearing inner ring. When in use, a ball-filling hole plug and a cone pin are used to fix the ball-filling hole plug to seal it. In this structure, the steel balls and isolation blocks in the raceway are spaced one to one, and the steel balls are inserted into the ball sockets of the isolation blocks. When the bearing rotates, the steel balls slide in the ball sockets of the isolation blocks.
[0003] When disassembling the above-mentioned four-point contact ball slewing bearing, the following method is adopted: support the ring with ball-filling hole (fixed ring), gently lift the other ring (moving ring), use the pin puller to pull out the 6th ball-filling hole plug fixing cone pin, then pull out the ball-filling hole plug, and then by rotating the ring without ball-filling hole, the steel ball and isolation block will be continuously rotated to the ball-filling hole position, and continuously removed by tools until the steel ball and isolation block are completely removed, and the inner and outer rings will be separated.
[0004] The above method has the following disadvantages: when the steel ball or isolation block is forced to rotate out of the ball filling hole by blocking, the steel ball and the isolation block are often stuck due to interference, and the steel ball or isolation block cannot be removed; and the turntable bearing is usually grease lubricated, and the grease has a high viscosity, which will stick the isolation block and the steel ball together, and also stick the steel ball and the isolation block to the raceway. Usually, workers are required to bend down and visually check the position of the isolation block or steel ball in the ball filling hole. Since the turntable bearing is large, it is generally supported on the ground by three support piles at a low height. It is very inconvenient to disassemble it in this state. Moreover, the process of hooking it out with a hook-shaped tool is very time-consuming and labor-intensive for turntable bearings with as few as dozens of steel balls and as many as hundreds of steel balls. The work is very labor-intensive and the work efficiency is very low. Utility Model Content
[0005] The utility model aims to provide a disassembly tool for a four-point contact ball turntable bearing with an isolation block structure, which optimizes the structure of the tool to facilitate the removal of steel balls or isolation blocks, reduce the labor intensity of workers and improve work efficiency.
[0006] The technical solution adopted by the utility model is: a four-point contact ball turntable bearing disassembly tool with an isolation block structure, comprising a hollow cylinder, a stripping claw is formed by an outward projection along the axial direction on one side of the end of the cylinder, and a guiding claw is formed by an outward projection along the axial direction on the other side of the end of the cylinder, and one end of the guiding claw away from the cylinder is bent toward the stripping claw with a certain arc, the guiding claw and the stripping claw are distributed on both sides of the center axis of the cylinder and the protruding length of the guiding claw is longer than the protruding length of the stripping claw.
[0007] As a preferred solution, the disassembly tool is formed as a whole by rolling and then shearing a thin metal sheet, and the stripping claws and the guiding claws can be bent to a certain arc under the action of an external force.
[0008] As a preferred solution, the stripping claw is an arc-shaped structure, and the curvature of its inner concave surface is consistent with the curvature of the cylinder.
[0009] As a preferred solution, a side surface of the guiding claw facing the stripping claw is provided with an arc surface for guiding the steel ball or the isolation block to fall into the hollow inner cavity of the cylinder.
[0010] The beneficial effects of the utility model are:
[0011] Based on the defects of the prior art, the present invention provides a four-point contact ball turntable bearing disassembly tool with an isolation block structure. Through optimized structural design, the disassembly tool is formed by rolling and shearing a thin metal sheet as a whole, and includes a cylinder body, and a stripping claw is formed by an outward protrusion along the axial direction on one side of the end of the cylinder body, and a guide claw is formed by an outward protrusion along the axial direction on the other side of the end of the cylinder body. The guide claw is bent toward the stripping claw at a certain arc at one end away from the cylinder body, and the guiding claw and the stripping claw are distributed on both sides of the center axis of the cylinder body, and the protruding length of the guiding claw is longer than the protruding length of the stripping claw. By implementing the above structure, it is convenient to remove the steel ball or the isolation block, reduce the labor intensity of workers, and improve work efficiency. BRIEF DESCRIPTION OF THE DRAWINGS
[0012] In order to more clearly illustrate the embodiments of the utility model or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.
[0013] Figure 1 It is a structural schematic diagram of the utility model;
[0014] Figure 2 It is a schematic diagram of the utility model in a specific implementation state.
[0015] Reference numerals: 1, cylinder, 2, stripping claw, 3, guide claw, 4, bearing ball filling hole
[0016] Wall, 5. Clearance between inner and outer ring raceways of bearing, 6. Isolation block, 7. Steel ball. DETAILED DESCRIPTION
[0017] The present invention is described in detail below by way of exemplary embodiments. However, it should be understood that, without further description, elements, structures and features in one embodiment may also be beneficially combined in other embodiments.
[0018] It should be noted that: unless otherwise defined, the technical terms or scientific terms used in this article should be understood by people with ordinary skills in the field to which the utility model belongs. The words "one", "an" or "the" and the like used in the patent application specification and claims of this utility model do not express quantitative restrictions, but indicate the existence of at least one; the "first", "second" and "third" used in this article should not be regarded as restrictions on the order of components, but are only used to distinguish different components; "include" or "comprise" and other similar words indicate that the elements or objects appearing before "include" or "comprise" include the elements or objects listed after "include" or "comprise" and their equivalents, but do not exclude other elements or objects with the same function.
[0019] Embodiment 1
[0020] In order to more clearly describe the specific structural composition of the four-point contact ball slewing bearing disassembly tooling with the isolation block structure and the disassembly process of the steel ball in the bearing, combined with the attached Figure 1-2 Describe this embodiment:
[0021] As shown in the figure, a disassembly tool for a four-point contact ball turntable bearing with an isolation block structure is formed by rolling and shearing a thin metal sheet as a whole. In the specific use process, it can be made of a thin copper sheet. The disassembly tool comprises a hollow cylinder 1, and a stripping claw 2 is formed by extending and protruding along the axial direction on one side of the end of the cylinder 1, and a guide claw 3 is formed by extending and protruding along the axial direction on the other side of the end of the cylinder 1. The end of the guide claw 3 away from the cylinder 1 is pre-bent into an arc shape, so that Figure 1 It can also be seen that the front end of the guide claw 3 away from the cylinder 1 is bent toward the stripping claw 2 with a certain arc, the guide claw 3 and the stripping claw 2 are distributed on both sides of the central axis of the cylinder 1 and the protruding length of the guide claw 3 is longer than the protruding length of the stripping claw 2.
[0022] In this embodiment, since the disassembling tool is entirely formed by rolling a thin metal sheet, the stripping claws and the guiding claws therein have a certain elasticity and can be bent to a certain arc under the action of an external force.
[0023] In this embodiment, the stripping claw 2 is an arc-shaped structure, and the curvature of the inner concave surface thereof is consistent with the curvature of the cylinder.
[0024] In this embodiment, a side surface of the guide claw 3 facing the stripping claw is provided with an arc surface for guiding the steel ball or the isolation block to fall into the hollow inner cavity of the cylinder.
[0025] The disassembly process of the steel balls in the four-point contact ball slewing bearing with isolation block structure using the above disassembly tool is as follows:
[0026] By rotating one of the bearing rings, the steel balls and the spacers in the gap 5 between the inner and outer rings of the bearing will be continuously rotated to the position of the ball filling hole. When one of the steel balls or the spacers appears at the position of the ball filling hole, the disassembly tool is moved deeper from the ball filling hole in the posture of the left and right sides of the two claws (the guide claws 3 are located on the rotating direction side of the moving ring). At this time, the cylinder 1 contacts the wall 4 of the ball filling hole of the bearing.
[0027] The longer guide claw 3 will block the steel ball or isolation block from moving forward, and the shorter stripping claw 2 will first contact the steel ball or isolation block. At this time, when the moving coil rotates, the stripping claw 2 slides to the boundary between the isolation block and the steel ball. Due to the height difference between the stripping claw 2 and the guiding claw 3, the vibration will be transmitted to the operator through the cylinder 1. At this time, the bearing is stopped and the cylinder 1 is pushed forward. The wider stripping claw 2 has a higher strength and will cut into the space between the isolation block and the steel ball, separating the steel ball or isolation block at the lower ball-filling hole and pushing it forward; the longer guide claw 3 is narrower when pushed forward, and the front end is in an arc shape and pre-bent to a certain arc. It will continue to bend along the moving coil raceway to form a certain arc.
[0028] When the stripping claw 2 pushes the steel ball or isolation block forward, the steel ball or isolation block will separate from the moving coil raceway along the arc, that is, the steel ball or isolation block will fall off the adjacent parts under the wrapping of the two claws and fall into the cylinder 1. A steel ball or isolation block can be taken out by pulling out the cylinder 1. The steel balls or isolation blocks can be continuously taken out by continuing the above operation. There is no need to bend over and visually observe. The operation can be carried out by relying on the vibration of the cylinder 1, which greatly improves work efficiency and reduces the labor intensity of the operator.
[0029] The parts not described in detail in this embodiment are prior art.
[0030] It should be noted that although the utility model is described through the above embodiments, the utility model can also have other multiple embodiments. Without departing from the spirit and scope of the utility model, it is obvious that those skilled in the art can make various corresponding changes and deformations to the utility model, but these changes and deformations should all fall within the scope of protection of the attached claims of the utility model and their equivalents.
Claims
1. A disassembly tool for a four-point contact ball slewing bearing with an isolation block structure, characterized in that: It comprises a hollow cylinder, a stripping claw is formed by a protrusion extending outwardly along the axial direction on one side of the end of the cylinder, and a guiding claw is formed by a protrusion extending outwardly along the axial direction on the other side of the end of the cylinder. The end of the guiding claw away from the cylinder is bent toward the stripping claw with a certain arc, and the guiding claw and the stripping claw are distributed on both sides of the center axis of the cylinder, and the protruding length of the guiding claw is longer than the protruding length of the stripping claw.
2. The disassembly tool for a four-point contact ball slewing bearing with an isolation block structure according to claim 1, characterized in that: The disassembling tool is formed by rolling and shearing a thin metal sheet as a whole, and the stripping claws and the guiding claws can be bent to a certain arc under the action of external force.
3. The tool for disassembling a four-point contact ball slewing bearing with an isolation block structure according to claim 1, characterized in that: The stripping claw is an arc-shaped structure, and the curvature of the inner concave surface thereof is consistent with the curvature of the cylinder.
4. The tool for disassembling a four-point contact ball slewing bearing with an isolation block structure according to claim 1, characterized in that: A side surface of the guide claw facing the stripping claw is provided with an arc surface for guiding the steel ball or the isolation block to fall into the hollow inner cavity of the cylinder.