A tool for dismounting a pinion end bearing

Abstract

A kind of dismounting tool of shaft tooth end bearing, including clamping assembly spliced by 2 center symmetrical half circular toothed plates, clamping assembly is overall circular plate, oblique tooth through-hole is coaxially provided on the circular plate, and the oblique tooth through-hole is matched with the oblique tooth structure on the one side outer periphery of auxiliary box welded shaft;It also includes support beam provided on the one side of clamping assembly, support beam is provided with threaded through-hole coinciding with the axis of clamping assembly, and it also includes jack rod matched with threaded through-hole;Support beam is provided with two strip holes, any half circular toothed plate is provided with limiting through-hole, two limiting through-holes are respectively corresponding with two strip holes, and it also includes two screw rods respectively passing through strip hole and limiting through-hole in turn;Any screw rod is sleeved with locking nut on both sides of support beam and on both sides of half circular toothed plate.Changing the damage of current dismounting method to bearing, the whole structure design is easy to implement, only one person can be completed, effectively improve work efficiency, reduce labor intensity, and protect personnel safety.

Description

Technical Field

[0001] This utility model belongs to the field of gearbox tooling technology, specifically relating to a disassembly tool for a shaft gear end bearing. Background Technology

[0002] In recent years, with the rapid development of my country's automobile industry and the continuous upgrading of automobiles, the market demand for AMT transmissions has been increasing day by day. The research and development of the F8JZ series products often involves disassembling various key components during the testing process.

[0003] The rear bearing of the welded shaft in the F8JZ series transmission auxiliary housing is a cylindrical roller bearing. The outer ring of the bearing has an interference fit with the housing bore, and the inner ring also has an interference fit with the welded shaft. One side of the welded shaft has a helical gear structure, and the clearance between the bearing end face and the helical gear end face is less than 1 mm. Due to the limited space, existing bearing tools cannot disassemble it. Directly pulling the bearing cage with a bearing puller would damage the bearing, causing the cage to break and the bearing rollers to fly out. This not only compromises the integrity of the bearing disassembly, affecting the analysis of test results, but also poses a safety hazard. Therefore, to safely and non-destructively disassemble this bearing, a specialized tool for quickly and non-destructively disassembling such bearings needs to be developed. Utility Model Content

[0004] To address the aforementioned problems, the purpose of this utility model is to provide a disassembly tool for bearings at the gear end, thereby solving the disassembly problem of bearings with particularly small gear end clearances.

[0005] To achieve the above objectives, the technical solution adopted by this utility model includes:

[0006] A tool for disassembling a gear-end bearing includes a clamping assembly composed of two centrally symmetrical semi-circular toothed plates. The clamping assembly is a circular plate with coaxial helical toothed through holes that match the helical tooth structure on the outer periphery of the auxiliary housing welding shaft. It also includes a support beam located on one side of the clamping assembly, with space between the clamping assembly and the support beam. The central radial section of the support beam is coplanar with the axis of the clamping assembly. The support beam has threaded through holes coinciding with the axis of the clamping assembly. It also includes a push rod threaded to the threaded through holes. The support beam has two slots parallel to the axis of the clamping assembly. Each semi-circular toothed plate has a limiting through hole, with the two limiting through holes corresponding to the two slots. It also includes two screws that pass sequentially through the slots and limiting through holes, with the axes of the two screws always parallel to the axis of the clamping assembly. Locking nuts, threaded to the screws, are fitted on both sides of the support beam and on both sides of the semi-circular toothed plate.

[0007] Preferably, a retaining ring matching its structure is fitted around the outer periphery of the clamping component.

[0008] Preferably, the upper edge of the fixing ring is provided with a limiting protrusion, the inner diameter of which is smaller than the outer diameter of the clamping assembly.

[0009] Preferably, the two slots are symmetrically located on the supporting crossbeam.

[0010] Preferably, the line connecting the center points of the two limiting through holes is perpendicular to and intersects the axis of the clamping assembly.

[0011] Compared with the prior art, the advantages of this utility model are:

[0012] (1) The present invention provides a disassembly tool for a bearing at the end of a shaft tooth. Through the reasonable setting of the component structure, it is designed for the disassembly of bearings with particularly small clearance between the bearing and the end of the shaft tooth. It changes the current disassembly method and changes the damage to the bearing. It effectively makes up for the current situation that the existing bearing puller tool cannot disassemble the bearing. The entire structure design is easy to implement and only requires one person to complete. It effectively improves work efficiency, reduces labor intensity, and protects personnel safety.

[0013] (2) The present invention provides a tool for disassembling a shaft tooth end bearing. During the disassembly of the cylindrical roller bearing, the helical tooth structure on the outer periphery of the auxiliary housing welding shaft meshes with the helical tooth through hole. During disassembly, the force is transmitted to the inner ring of the cylindrical roller bearing and pulled out, thereby maintaining the integrity of the disassembly of the cylindrical roller bearing. At the same time, it avoids the risk of the cylindrical roller bearing flying out and injuring people during the previous disassembly process, effectively protecting personnel safety.

[0014] (3) The present invention provides a tool for disassembling a shaft tooth end bearing. By reasonably setting the component structure, when the fixing ring is fastened on the clamping assembly composed of two semi-circular toothed plates, it can not only prevent the fixing ring from falling off, but also prevent the two semi-circular toothed plates from misaligning due to uneven force, thus playing a corrective and fixing role. Attached Figure Description

[0015] The accompanying drawings are provided to further illustrate the present invention and form part of the specification. They are used together with the following detailed description to explain the present invention, but do not constitute a limitation thereof. In the drawings:

[0016] Figure 1 This is a schematic diagram of the disassembly tool for the shaft tooth end bearing of this utility model;

[0017] Figure 2 for Figure 1 Disassembly tools for the shaft gear end bearing and assembly drawings for the cylindrical roller bearing and auxiliary housing welded shaft;

[0018] Figure 3 for Figure 2 A sectional view;

[0019] Figure 4 for Figure 1 Schematic diagram of the central support beam;

[0020] Figure 5 for Figure 1 Schematic diagram of the structure of the semi-circular toothed plate;

[0021] Figure 6 for Figure 1 A schematic diagram of the structure of the fixed ring.

[0022] The labels in the diagram represent:

[0023] A. Cylindrical roller bearing; B. Sub-box welded shaft;

[0024] 1. Support beam, 1-1 hole, 1-2 threaded through hole, 2. Screw, 3. Top rod, 4. Locking nut, 5. Semi-circular toothed plate, 5-1 oblique toothed through hole, 5-2 limiting through hole, 6. Fixing ring, 6-1 limiting convex ring. Detailed Implementation

[0025] The utility model is not limited to the following specific embodiments. All equivalent modifications made based on the technical solution of this application fall within the protection scope of this utility model.

[0026] It should be noted that the directional terms mentioned in this document, such as "inner cavity," "inner circumference," "inner wall," and "outer side," are consistent with the specific directions on the paper in the accompanying drawings or the corresponding directions of the space shown in the drawings; all components and devices in this utility model, unless otherwise specified, adopt components and devices known in the prior art.

[0027] Example

[0028] This embodiment discloses a disassembly tool for a shaft tooth end bearing, including a clamping assembly composed of two centrally symmetrical semi-circular toothed plates 5 spliced ​​together. The clamping assembly is a circular plate, and a helical tooth through hole 5-1 is coaxially provided on the circular plate. The helical tooth through hole 5-1 matches the helical tooth structure on the outer periphery of the auxiliary housing welding shaft B. It also includes a support beam 1 provided on one side of the clamping assembly and leaving space between the clamping assembly and the clamping assembly. The central radial section of the support beam 1 is coplanar with the axis of the clamping assembly, and the support beam 1 has a threaded through hole that coincides with the axis of the clamping assembly. The support beam 1 has two slots 1-1 parallel to the axis of the clamping assembly, and each semi-circular toothed plate 5 has a limiting through hole 5-2. The two limiting through holes 5-2 correspond to the two slots 1-1 respectively. It also includes two screws 2 that pass through the slots 1-1 and the limiting through holes 5-2 respectively. The axes of the two screws 2 are always parallel to the axis of the clamping assembly. Locking nuts 4 that are threadedly engaged with the screws 2 are fitted on both sides of the support beam 1 and on both sides of the semi-circular toothed plate 5.

[0029] Its function is as follows: During use, the auxiliary housing welding shaft B is clamped in the helical tooth through hole 5-1 in the two semi-circular toothed plates 5. At the same time, the cylindrical roller bearing A on the auxiliary housing welding shaft B is limited to the side of the clamping assembly near the support beam 1. Any screw 2, under the clamping of the four locking nuts 4, limits and fixes the support beam 1 and the clamping assembly. At this time, the push rod 3 passes through the threaded through hole 1-2 and contacts the end of the auxiliary housing welding shaft B. Then, continue to screw in the push rod 3 until the cylindrical roller bearing A is completely removed. During the removal of the cylindrical roller bearing A, the helical tooth structure on the outer periphery of the auxiliary housing welding shaft B meshes with the helical tooth through hole 5-1 using the tooth meshing principle. During disassembly, the force is transmitted to the inner ring of the cylindrical roller bearing A and pulled out, thereby maintaining the integrity of the disassembly of the cylindrical roller bearing A and avoiding the risk of the cylindrical roller bearing flying out and injuring people during the previous disassembly process, effectively protecting personnel safety.

[0030] This invention addresses the disassembly of bearings with extremely small clearances between the bearing and the gear teeth, changing the current disassembly methods that damage the bearing and effectively overcoming the limitation of existing bearing puller tools. The entire structure is easy to implement and can be completed by a single person, effectively improving work efficiency, reducing labor intensity, and protecting personnel safety.

[0031] In this embodiment, the two slots 1-1 are symmetrically located on the support beam 1. The line connecting the center points of the two limiting through holes 5-2 is perpendicular to and intersects the axis of the clamping assembly. At the same time, the two screws 2 in this embodiment are connected by multiple locking nuts 4 to effectively prevent the screws from tilting, ensuring consistent force and stability.

[0032] Specifically, a fixing ring 6 matching its structure is fitted around the outer periphery of the clamping component. A limiting protrusion 6-1 is provided on the upper edge of the fixing ring 6. The inner diameter of the limiting protrusion 6-1 is smaller than the outer diameter of the clamping component. The design of the limiting protrusion 6-1 ensures that when the fixing ring 6 is fitted onto the clamping component composed of two semi-circular toothed plates 5, it can not only prevent the fixing ring 6 from falling off, but also prevent the two semi-circular toothed plates 5 from misaligning due to uneven force, thus playing a corrective and fixing role.

[0033] The specific method for using the disassembly tool for the bearing at the shaft end in this embodiment is as follows:

[0034] S1, pass the lower ends of the two screws 2 through the two limiting through holes 5-2 respectively, and lock the upper and lower end faces of the two semi-circular toothed plates 5 with four locking nuts respectively, and then put the fixing ring 6 into the two screws 2;

[0035] S2, pass the upper ends of the two screws 2 through the two slots 1-1 respectively, and pre-tighten the four locking nuts on both sides of the slots 1-1 respectively, so that the screws 2 can move laterally along the slots 1-1;

[0036] S3, adjust the position of the two screws 2 until the oblique tooth through hole 5-1 in the center of the two semi-circular toothed plates 5 meshes with the tooth on the auxiliary box welding shaft B. At this time, the two semi-circular toothed plates 5 form a circular plate (i.e., the clamping assembly). Put the fixing ring 6 on the outer circumference of the circular plate, and the limiting protrusion ring 6-1 fits against the upper surface of the circular plate. At this time, tighten the four locking nuts on both sides of the strip hole 1-1.

[0037] S4. Screw the push rod 3 into the threaded through hole 1-2 in the middle of the support beam 1 until one end of the round head of the push rod 3 contacts the tooth end face of the auxiliary housing welding shaft B, and the upper end of the helical tooth through hole 5-1 is in contact with the inner ring of the cylindrical roller bearing A. Then continue to screw the push rod 3 in until the auxiliary housing welding shaft B is completely removed.

[0038] The preferred embodiments of this disclosure have been described in detail above with reference to the accompanying drawings. However, this disclosure is not limited to the specific details of the above embodiments. Within the scope of the technical concept of this disclosure, various simple modifications can be made to the technical solutions of this disclosure, and these simple modifications all fall within the protection scope of this disclosure.

[0039] It should also be noted that the various specific technical features described in the above specific embodiments can be combined in any suitable manner without contradiction. In order to avoid unnecessary repetition, this disclosure will not describe the various possible combinations separately.

[0040] Furthermore, the various implementation methods disclosed in this solution can be combined in any way, as long as they do not violate the spirit of this disclosure, they should also be regarded as the content invented by this disclosure.

Claims

1. A tool for disassembling a bearing at the end of a shaft tooth, characterized in that, It includes a clamping assembly consisting of two centrally symmetrical semi-circular toothed plates (5) spliced ​​together. The clamping assembly is a circular plate as a whole, and the circular plate is provided with a coaxial oblique toothed through hole (5-1). The oblique toothed through hole (5-1) matches the oblique toothed structure on the outer periphery of the auxiliary box welding shaft (B). It also includes a support beam (1) located on one side of the clamping assembly and having space between the clamping assembly and the clamping assembly. The central radial section of the support beam (1) is coplanar with the axis of the clamping assembly. The support beam (1) is provided with a threaded through hole that coincides with the axis of the clamping assembly. It also includes a push rod (3) that is threadedly matched with the threaded through hole. The supporting crossbeam (1) is provided with two slots (1-1) parallel to the axis of the clamping assembly, and any half-circular toothed plate (5) is provided with a limiting through hole (5-2). The two limiting through holes (5-2) correspond to the two slots (1-1) respectively. It also includes two screws (2) that pass through the slots (1-1) and the limiting through hole (5-2) respectively. The axes of the two screws (2) are always parallel to the axis of the clamping assembly. Each screw (2) is fitted with a locking nut (4) that is threadedly engaged with the screw (2) on both sides of the supporting beam (1) and on both sides of the semi-circular toothed plate (5).

2. The disassembly tool for the shaft tooth end bearing as described in claim 1, characterized in that, The clamping assembly is fitted with a retaining ring (6) that matches its structure.

3. The disassembly tool for the shaft tooth end bearing as described in claim 2, characterized in that, The upper edge of the fixing ring (6) is provided with a limiting protrusion (6-1), and the inner diameter of the limiting protrusion (6-1) is smaller than the outer diameter of the clamping assembly.

4. The disassembly tool for the shaft tooth end bearing as described in any one of claims 1-3, characterized in that, Two slots (1-1) are symmetrically located on the supporting crossbeam (1).

5. The disassembly tool for the shaft tooth end bearing as described in claim 4, characterized in that, The line connecting the center points of the two limiting through holes (5-2) is perpendicular to and intersects the axis of the clamping assembly.

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