Tool for disassembling intermediate shaft gear and bearing of gearbox

Abstract

A tool for disassembling an intermediate shaft gear and a bearing of a gearbox belongs to the technical field of bearing auxiliary equipment and comprises a lower support A, a lower support B, a connecting rod A, a connecting rod B, a connecting platform and a spiral column. A connecting block A and a connecting block B are arranged on the upper portion of the outer wall of the lower support A and the upper portion of the outer wall of the lower support B. The connecting block A is connected with the bottom of a connecting rod A. The connecting block B is connected with the bottom of a connecting rod B. The upper end of the connecting rod A and the upper end of the connecting rod B are both matched with the two ends of a connecting platform. A spiral column is arranged in the middle of the connecting platform and penetrates through the center of the connecting platform. The tool is convenient and simple to install, time-saving and labor-saving to operate, solves the problems that the intermediate shaft bull gear is not easy to disassemble and assemble under the condition of no damage and the bull gear side bearing has no disassembly position, and can disassemble the bull gear and the bearing at the same time by single application.

Description

Technical Field

[0001] The utility model belongs to the technical field of bearing auxiliary equipment, and in particular relates to a tool for disassembling gears and bearings of an intermediate shaft of a transmission case. Background Art

[0002] Gearboxes are widely used in the automotive field. The intermediate shaft is a component with a high degree of damage in the overall structure. When a problem occurs, it is often difficult to disassemble the mating parts. After bench testing, it is usually necessary to analyze the intermediate shaft gears and bearings. The large gear and the intermediate shaft are usually spline-connected. This connection method has good processability and is easy to assemble, but it makes the large gear difficult to disassemble. The bearings on both sides and the intermediate shaft are usually interference fit. Due to structural requirements, there is usually no disassembly position. In addition, the deformation that may occur after use also makes disassembly difficult.

[0003] Currently, two methods are usually used for disassembly when disassembly analysis is required. One is to use a pull code for disassembly. When using a pull code to disassemble a large gear, the claws will cause wear on the gear tooth surface. At the same time, due to the irregularity of the tooth surface, the pull code may fall off during use. The other method is to use wire cutting for disassembly. This disassembly method cannot guarantee the integrity of the gears and bearings, and some tests cannot be performed after disassembly. Utility Model Content

[0004] In view of the shortcomings of the existing technology, the purpose of this utility model is to design a tool for disassembling the gears and bearings of the gearbox intermediate shaft, which is used to solve the shortcomings of the existing disassembly scheme mentioned in the background technology, which cannot ensure the integrity of the gears and bearings, thereby resulting in the inability to carry out some inspections.

[0005] To achieve the above-mentioned purpose, the present invention adopts the following technical solutions: a tool for disassembling the gears and bearings of the gearbox intermediate shaft, comprising a lower support A, a lower support B, a connecting rod A, a connecting rod B, a connecting platform and a spiral column, wherein the lower support A and the lower support B are symmetrical arc-shaped plate structures, and the upper part of the outer wall of the lower support A and the upper part of the outer wall of the lower support B are respectively provided with a connecting block A and a connecting block B, the connecting block A is connected to the bottom of the connecting rod A, and the connecting block B is connected to the bottom of the connecting rod B, the upper end of the connecting rod A and the upper end of the connecting rod B are both matched with the two ends of the connecting platform, and a spiral column is provided in the middle of the connecting platform, and the spiral column runs through the center of the connecting platform.

[0006] Threaded through holes are symmetrically provided on both sides of the middle part of the outer wall of the lower support A near the edge, and threaded countersunk holes are symmetrically provided on both sides of the middle part of the lower support B. The threaded countersunk holes and the threaded through holes correspond to each other, and a connecting screw is provided in the threaded countersunk hole. One end of the connecting screw is set in the threaded countersunk hole, and the other end passes through the threaded through hole and is connected to the lower support A through a nut. The connecting block A and the connecting block B are both provided with threaded holes, and cooperate with the connecting rod A and the connecting rod B through them.

[0007] The connecting platform is composed of a circular part in the middle and a strip-shaped through groove at both ends. A central through hole is provided in the center of the connecting platform. The internal thread of the central through hole cooperates with the spiral column thread. The center line of the strip through groove at both ends is on the same straight line as the center of the circular part. The width of the strip through groove matches the diameter of the upper end of the connecting rod A and the connecting rod B.

[0008] The connecting rod A and the connecting rod B are both rod-shaped structures with external threads at both ends and a hexagonal prism body. The external threads at the lower ends of the connecting rods A and B match the threaded holes of the connecting blocks A and B.

[0009] An adjusting knob is provided at the upper end of the spiral column. The adjusting knob and the spiral column are integrally formed. The axis of the spiral column and the axis of the cylinder formed by the lower support A and the lower support B are on the same straight line.

[0010] The beneficial effect of the utility model is that the tool can be used to disassemble the gears and bearings of the intermediate shaft from the intermediate shaft without damaging their integrity, thereby not affecting their detection and analysis and ensuring detection accuracy. BRIEF DESCRIPTION OF THE DRAWINGS

[0011] Figure 1 It is an overall schematic diagram of the utility model.

[0012] Figure 2 This is a schematic structural diagram of the utility model.

[0013] Figure 3 It is a schematic diagram of the left side of the structure of the utility model.

[0014] Figure 4 It is a schematic top view of the structure of the utility model.

[0015] Figure 5 This is a schematic diagram of the lower support A of the present invention.

[0016] Figure 6 This is a schematic diagram of the connection platform structure of the utility model.

[0017] In the figure: 1. Lower support A, 101. Connecting block A, 102. Threaded through hole, 2. Lower support B, 201. Connecting block B, 202. Threaded countersunk hole, 3. Connecting rod A, 4. Connecting rod B, 5. Connecting platform, 501. Circular part, 502. Bar-shaped through groove, 503. Center through hole, 6. Spiral column, 7. Connecting screw, 8. Adjusting knob. DETAILED DESCRIPTION

[0018] The following will be combined with the drawings of this specification to clearly and completely describe the technical solution of the utility model. It should be noted that the embodiments described are only some of the embodiments of the utility model, not all of them. Based on the embodiments of the utility model, all other embodiments obtained by ordinary technicians in this field without making any creative efforts shall fall within the scope of protection of the utility model.

[0019] See also Figures 1-4A tool for disassembling the gears and bearings of the intermediate shaft of the gearbox includes a lower support A1, a lower support B2, a connecting rod A3, a connecting rod B4, a connecting platform 5 and a spiral column 6. The lower support A1 and the lower support B2 are symmetrical arc-shaped plate structures. The upper part of the outer wall of the lower support A1 and the upper part of the outer wall of the lower support B2 are respectively provided with a connecting block A101 and a connecting block B201. The connecting block A101 is connected to the bottom of the connecting rod A3, and the connecting block B201 is connected to the bottom of the connecting rod B4. The upper ends of the connecting rods A3 and B4 are both matched with the two ends of the connecting platform 5. A spiral column 6 is provided in the middle of the connecting platform 5, and the spiral column 6 runs through the center of the connecting platform 5. Threaded through holes 102 are symmetrically provided on both sides of the middle part of the outer wall of the lower support A1 near the edge, and threaded countersunk holes 202 are symmetrically provided on both sides of the middle part of the lower support B2. The threaded countersunk holes 202 correspond to the threaded through holes 102. A connecting screw 7 is provided in the threaded countersunk hole 202. One end of the connecting screw 7 is set in the threaded countersunk hole 202, and the other end thereof passes through the threaded through hole 102 and is connected to the lower support A1 through a nut. The connecting block A101 and the connecting block B201 are both provided with threaded holes, and cooperate with the connecting rod A3 and the connecting rod B4 through them. The connecting platform 5 is composed of a central circular portion 501 and two sections with strip-shaped through-slots 502, which are connected together. A central through-hole 503 is provided at the center of the connecting platform 5. The through-hole 503 is threadedly engaged with the spiral post 6. The midlines of the strip-shaped through-slots 502 on either side are aligned with the center of the circular portion 501. The widths of the strip-shaped through-slots 502 align with the upper ends of the connecting rods A3 and B4. Both connecting rods A3 and B4 are rod-shaped structures with external threads at both ends and a hexagonal prism-shaped shaft. The external threads at the lower ends of connecting rods A3 and B4 mate with threaded holes in connecting blocks A101 and B201. An adjustment knob 8 is provided at the upper end of the spiral post 6. The adjustment knob 8 is integral with the spiral post 6. The axis of the spiral post 6 is aligned with the axis of the cylinder formed by lower supports A1 and B2.

[0020] During use, the utility model:

[0021] First, make the upper end faces of the lower support A1 and the lower support B2 contact with the large gear to be disassembled, and then connect the lower support A1 and the lower support B2 through the connecting screw 7 and the nut. Next, install the lower end of the connecting rod A3 and the lower end of the connecting rod B4 in the threaded holes of the connecting block A101 and the connecting block B201, and then use nuts to install the upper ends of the connecting rod A3 and the connecting rod B4 in the bar-shaped through grooves 502 at both ends of the connecting platform 5, and then thread the spiral column 6 into the central through hole 503 of the connecting platform 5. At this time, the axis of the spiral column 6 and the axis of the intermediate shaft are in the same straight line. By rotating the adjusting knob 8, the spiral column 6 is driven to rotate, and under the action of pressure, the large gear is caused to fall off along the axial direction of the spline, and at the same time, the bearing fitted with the large gear is driven to fall off.

[0022] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principles of the present invention should be included in the scope of protection of the present invention.

[0023] The parts not described in detail in this utility model are prior art.

Claims

1. A tool for disassembling gears and bearings of a gearbox intermediate shaft, comprising a lower support A (1), a lower support B (2), a connecting rod A (3), a connecting rod B (4), a connecting platform (5) and a spiral column (6), characterized in that: The lower support A (1) and the lower support B (2) are symmetrical circular arc plate structures. The upper part of the outer wall of the lower support A (1) and the upper part of the outer wall of the lower support B (2) are respectively provided with a connecting block A (101) and a connecting block B (201). The connecting block A (101) is connected to the bottom of the connecting rod A (3), and the connecting block B (201) is connected to the bottom of the connecting rod B (4). The upper end of the connecting rod A (3) and the upper end of the connecting rod B (4) are both matched with the two ends of the connecting platform (5). A spiral column (6) is provided in the middle of the connecting platform (5), and the spiral column (6) passes through the center of the connecting platform (5).

2. The tool for disassembling the gear and bearing of the gearbox intermediate shaft according to claim 1, characterized in that: Threaded through holes (102) are symmetrically provided on both sides of the middle of the outer wall of the lower support A (1) near the edge, and threaded countersunk holes (202) are symmetrically provided on both sides of the middle of the inner wall of the lower support B (2). The threaded countersunk holes (202) correspond to the threaded through holes (102), and a connecting screw (7) is provided in the threaded countersunk hole (202). One end of the connecting screw (7) is set in the threaded countersunk hole (202), and the other end thereof passes through the threaded through hole (102) and is connected to the lower support A (1) through a nut. The connecting block A (101) and the connecting block B (201) are both provided with threaded holes, and are matched with the connecting rod A (3) and the connecting rod B (4) through the threaded holes.

3. The tool for disassembling the gear and bearing of the gearbox intermediate shaft according to claim 1, characterized in that: The connecting platform (5) is composed of a circular portion (501) in the middle and strip-shaped through grooves (502) at both ends, which are connected as a whole. A central through hole (503) is provided at the center of the connecting platform (5). The central through hole (503) has an internal thread and is threadedly matched with the spiral column (6). The center lines of the strip-shaped through grooves (502) at both ends are on the same straight line as the center of the circular portion (501). The width of the strip-shaped through grooves (502) matches the diameter of the upper ends of the connecting rods A (3) and B (4).

4. The tool for disassembling gears and bearings of a gearbox intermediate shaft according to claim 1, characterized in that: The connecting rod A (3) and the connecting rod B (4) are both rod-shaped structures with external threads at both ends and a hexagonal prism body. The external threads at the lower ends of the connecting rod A (3) and the lower ends of the connecting rod B (4) are matched with the threaded holes of the connecting block A (101) and the connecting block B (201).

5. The tool for disassembling the gear and bearing of the intermediate shaft of the transmission according to claim 1, characterized in that: An adjusting knob (8) is provided at the upper end of the spiral column (6), and the adjusting knob (8) is fixed to the spiral column (6) as a whole. The axis of the spiral column (6) is on the same straight line as the axis of the cylinder formed by the lower support A (1) and the lower support B (2).

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