Method and tool for disassembling subway gear transmission device under vehicle

Abstract

The invention relates to the technical field of disassembly and assembly of subway gear transmission devices, in particular to a method and tool for disassembling a subway gear transmission device under a vehicle. The method is characterized by specifically comprising the following steps of S1, disassembly of an oil adding plug and an oil discharging plug, S2, observation of lubricating oil, S3, disassembly of a bearing seat bolt, S4, disassembly of an adjusting gasket and S5, disassembly of a lower box body of a gearbox. S10, lifting a lower box body of the gearbox; S11, closing the gearbox according to the specified torque; S12, screwing an oil drainage plug; S13, filling new gearbox lubricating oil; according to the method, by optimizing the operation process, the difficulty of bogie wheel set decomposition is solved, and under-vehicle gearbox decomposition is achieved.

Description

TECHNICAL FIELD

[0001] The present application relates to the field of disassembling metro gear transmission device, in particular to a method and tool for disassembling metro gear transmission device under the vehicle. BACKGROUND

[0002] When the gear transmission device of the rail transit vehicle is in operation, the gear box static seal may seep oil, the gear meshing may produce abnormal sound, and the box body may contain foreign matter, etc. If the vehicle is returned to the factory for repair, the related components such as the bogie, axle box, wheel, shaft coupling and motor need to be disassembled, which may cause poor timeliness, high cost and quality risk of the bogie during fault handling.

[0003] Currently, there are multiple pain points in the abnormal repair operation process: The bogie wheel pair disassembly is expensive and has a long repair cycle, which cannot be met on site; The return transportation time needs to be increased during the return to the factory for repair, which increases the repair cycle and transportation cost; There are costs of essential and occasional spare parts during the disassembly and assembly of other components, and there may be quality risks; The space under the vehicle is small, and the box repair cannot be carried out according to the normal disassembly and repair process; When assembling the bearing seat, the bearing seat is prone to tilt and jam, making assembly difficult, and in severe cases, the labyrinth structure of the gear box and the bearing seat may be damaged, resulting in additional costs of occasional spare parts; When the gear box is disassembled and assembled, the lower box body cannot be assisted by a stable lifting tool, which causes the lower box body to swing, the threaded holes and the labyrinth to be difficult to cooperate, and improper operation may easily cause the box body and the bearing seat to be damaged, and in severe cases, the lower box body may fall off and cause injury to the operator; When the gear box is assembled under the vehicle, the space is limited, which may easily cause the bearing seat to scratch the flange seal during installation, resulting in discontinuous rubber strips and subsequent oil seepage problems.

[0004] In order to simplify the operation process, improve the repair quality and reduce the safety risk, a method and tool for disassembling the metro gear transmission device under the vehicle are provided. SUMMARY

[0005] The present application provides a method and tool for disassembling the metro gear transmission device under the vehicle, which optimizes the operation process, solves the difficulty of disassembling the bogie wheel pair, and realizes the disassembly of the gear box under the vehicle.

[0006] To solve the above technical problems, the present application provides a method for disassembling the metro gear transmission device under the vehicle, characterized in that it comprises the following steps: S1: remove the oil filling and discharging screw plug, drain the gear lubricating oil, and observe whether the lubricating oil state is abnormal; S2: After observing the lubricating oil without abnormalities, remove the M16 process screw plug on the bearing seat and keep it ready for use; S3: Use a torque wrench and a sleeve to remove the M16 bolts on the bearing seat GW and the bearing seat GM, and keep the bolts ready; S4: Use a ratchet wrench and two ejection bolts to eject the bearing seat by 5mm, and ensure that the adjusting washer is separated from the gearbox body; S5: Use a hydraulic platform truck to support the lower gearbox body, remove the joint surface bolts and the connecting bolts on the bearing seat, and disassemble the lower gearbox body; S6: After removing the bearing seat, place it on the axle part protected on both sides of the gearbox, and place the upper body lightly on the driven gear; S7: Clean the upper and lower bodies, bearing seats GW, bearing seats GM and adjusting washers; S8: Install the guide bolt on the M16 process hole on the body, then apply 1215 sealant to the root of the bearing seat end face, install the bearing seats on both sides on the upper body with the help of the guide bolt, and pre-tighten the bolts connecting the bearing seat and the upper body; S9: Apply 1215 sealant to the joint surface of the lower body; S10: Use a hydraulic platform truck to lift the lower gearbox body to the installation position, pre-tighten the bolts connecting the bearing seat and the lower body, and the bolts on the joint surface; S11: Tighten the joint surface according to the specified torque, then tighten the bolts on the bearing seat; S12: Tighten the oil drain plug, tighten the oil drain plug, and bind the anti-loose wire; S13: Unscrew the oil filler plug, add new gearbox lubricating oil to the middle of the scale line; S14: Tighten the oil filler plug, tighten the oil filler plug, and bind the anti-loose wire; S15: Let the gearbox stand still to allow the sealant to cure.

[0007] Further, during the step S7 of cleaning, the bearing inner ring and the seal ring are wrapped with cloth for protection to prevent foreign matter from falling into the bearing.

[0008] Further, during the step S8 of assembling the bearing seats on both sides, a gap of about 5mm is left between the bearing seat and the gearbox mounting surface, a limiting tool is used to limit the bearing seat, and the sealant is prevented from being scratched.

[0009] Further, the limiting tool comprises a tool body and a strong magnet, the tool body is in arc shape, the upper end surface of the tool body is a limiting surface, an opening connecting groove matched with the bearing seat is arranged at the lower end of the tool body, the tool body is magnetically fixed with the bearing seat through the strong magnet arranged in the lower end surface, the strong magnet is detachably installed in the lower end surface of the tool body through bolt embedding, and a notch is arranged at the inner side of the middle section of the tool body.

[0010] Further, the upper end surface of the tool body is composed of a first limiting surface in a planar shape at the inner side and a second limiting surface in a bevel shape arranged outside the first limiting surface, and the vertical distance between the second limiting surface away from the first limiting surface and the first limiting surface is 5mm.

[0011] Further, the position 7-10mm from the inner cavity edge of the closed box surface of the lower box body is not coated with sealant during the sealant coating of step S9.

[0012] Further, the fastening sequence of the bolts on the closed box surface in step S11 is from the inner side to the outer side of the closed box surface, and the fastening sequence of the bolts on the bearing seat is in a diagonal ten direction.

[0013] Further, after step 14, the appearance of the gear box is observed and detected by manual observation, the paint is supplemented according to the actual situation, and the anti-loose mark is drawn.

[0014] Further, characterized in that: the standing time of the gear box in step S15 is controlled to be 12 hours or more.

[0015] After the above structure is adopted, the present application has the beneficial effects as follows: The present application solves the difficulty of bogie wheel pair disassembly by optimizing the operation process, and realizes the disassembly of the gear box under the vehicle.

[0016] After the above design is adopted, the present application solves the problem that the narrow space under the vehicle cannot be disassembled and inspected.

[0017] The present application solves the problem that the assembled bearing seat is easy to cause tilting and jamming, and even causes damage to the labyrinth groove, so that a gap of 5mm is reserved between the bearing seat and the gear box mounting surface after installation.

[0018] The present application solves the problem of unstable support when disassembling the gear box under the vehicle by the hydraulic platform vehicle, and avoids the risk of falling of the box body. BRIEF DESCRIPTION OF DRAWINGS

[0019] The present application will be further described in detail below in combination with the drawings and specific embodiments.

[0020] Figure 1 It is a structural schematic view of the limiting tool.

[0021] Figure 2 To Figure 1 The cross-sectional view along A-A.

[0022] In the figure: 1 is a limit tool, 2 is a strong magnet. DETAILED DESCRIPTION

[0023] The technical solutions of the present application will be described below in a clear and complete manner. Obviously, the described embodiments are part of the embodiments of the present application, rather than all the embodiments. Based on the embodiments of the present application, all other embodiments obtained by those skilled in the art without creative labor fall within the scope of protection of the present application.

[0024] In the description of the present application, it should be noted that some words indicating orientation or positional relationship are only for the convenience of describing the present application and simplifying the description, and do not indicate or imply that the indicated device or element must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present application.

[0025] In the description of the present application, it should be noted that "connection" should be understood broadly, for example, it can be fixed connection, or detachable connection, or integrally connected; it can be mechanical connection, or electrical connection; it can be directly connected, or indirectly connected through an intermediate medium, or the internal communication of two elements. For those skilled in the art, the specific meaning of the above terms in the present application can be understood according to the specific circumstances.

[0026] The present application will be described in further detail below through specific embodiments.

[0027] The present application provides a method for disassembling a subway gear transmission device under a vehicle, which specifically comprises the following steps: S1: remove the oil filling and draining screw plug, drain the gear lubricating oil, and observe whether the lubricating oil state is abnormal; S2: after observing that the lubricating oil is normal, remove the M16 process screw plug on the bearing seat and store it for standby; S3: use a torque wrench and a sleeve to remove the M16 bolts on the bearing seat GW and the bearing seat GM, and store the bolts; S4: use a ratchet wrench and two ejection bolts to eject the bearing seat by 5mm, and ensure that the adjusting gasket is separated from the gear box; S5: use a hydraulic platform truck to assist in supporting the lower gear box, remove the joint surface bolt and the connecting bolt on the bearing seat, and disassemble the lower gear box; S6: after removing the bearing seat, place it on the axle part protected on both sides of the gear box, and place the upper box lightly on the driven gear; S7: clean the upper and lower box bodies, bearing seats GW, bearing seats GM and adjusting gaskets; S8: install guide bolts on the M16 process holes on the box body, then smear 1215 sealant on the root of the bearing seat end face, install the bearing seats on both sides on the upper box body by means of the guide bolts, and pre-tighten the bolts connecting the bearing seats and the upper box body; S9: smear 1215 sealant at the joint surface of the lower box body; S10: use a hydraulic platform truck to lift the gear box lower box body to the installation position, pre-tighten the bolts connecting the bearing seats and the lower box body and the bolts on the joint surface; S11: tighten the joint surface according to the specified torque, then tighten the bolts on the bearing seats; S12: tighten the oil drain plug, tighten the oil drain plug, and bind the anti-loosening iron wire; S13: unscrew the oiling plug, add new gear box lubricating oil to the middle of the scale line; S14: tighten the oiling plug, tighten the oiling plug, and bind the anti-loosening iron wire; S15: stand the gear box to allow the sealant to solidify.

[0028] The application solves the difficulty of disassembling the wheel set of the bogie by optimizing the operation process, and realizes the disassembly of the gear box under the vehicle; moreover, the application solves the problem that the narrow space under the vehicle cannot be disassembled and inspected after the above design is adopted. Moreover, the application solves the unstable support problem of the gear box under the vehicle during disassembly by the hydraulic platform truck, and avoids the risk of falling of the box body.

[0029] The bearing inner ring and the sealing ring are protected by a cloth during the cleaning in the above step S7, so as to prevent foreign matters from falling into the bearing.

[0030] During the assembly of the bearing seats on both sides in the above step S8, a gap of about 5mm is left between the bearing seats and the gear box mounting surface, a limiting tool is used to limit the bearing seats, and it is ensured that the sealant is not scratched.

[0031] As Figure 1 and Figure 2The shown limiting tool includes a tool body 1 and a strong magnet 2, the tool body is in arc shape, the upper end surface of the tool body is a limiting surface, an opening connecting groove matched with the bearing seat is arranged at the lower end of the tool body, the tool body is magnetically fixed with the bearing seat through the strong magnet arranged in the lower end surface, the strong magnet is detachably installed in the lower end surface of the tool body through bolt embedding, and the inner side of the middle section of the tool body is provided with a notch; the upper end surface of the tool body is composed of a first limiting surface in the form of a plane at the inner side and a second limiting surface in the form of an inclined plane arranged outside the first limiting surface, and the vertical distance from the end of the second limiting surface away from the first limiting surface to the first limiting surface is 5 mm. Through the limiting tool, the problem that the assembled bearing seat is prone to tilting and jamming and even causes damage to the labyrinth groove is solved, and the bearing seat and the gear box mounting surface after installation are reserved with a gap of 5 mm.

[0032] In the step S9, the sealant is not applied to the inner cavity edge of the lower box body joint surface at a position of 7-10 mm.

[0033] In the step S11, the fastening sequence of the bolts on the joint surface is from the inner side to the outer side, and the fastening sequence of the bolts on the bearing seat is in the diagonal ten direction.

[0034] After the step 14, the appearance of the gear box is observed by manual observation, the paint is supplemented according to the actual situation, and the anti-loose mark is drawn.

[0035] In the step S15, the standing time of the gear box is controlled to be 12 hours or more.

[0036] The above is only the preferred embodiment of the present application, and the protection scope of the present application is not limited to the above-mentioned embodiment, and any technical solution belonging to the idea of the present application belongs to the protection scope of the present application. It should be pointed out that, for ordinary skilled in the art, some improvements and decorations without departing from the principle of the present application should be regarded as the protection scope of the present application.

Claims

1. A method of disassembling a metro gear transmission device off the vehicle, characterized by: Specifically comprising the following steps: S1: remove the oil filling and discharging screw plug, drain the gear lubricating oil, and observe whether the lubricating oil state is abnormal; S2: after observing that the lubricating oil is normal, remove the M16 process screw plug on the bearing seat and store it for standby; S3: use a torque wrench and a sleeve to remove the M16 bolts on the bearing seat GW and the bearing seat GM, and store the bolts; S4: use a ratchet wrench and two ejection bolts to eject the bearing seat by 5mm, and ensure that the adjusting gasket is separated from the gear box; S5: use a hydraulic platform vehicle to support the lower gear box, remove the connecting bolts between the joint surface bolts and the bearing seat, and disassemble the lower gear box; S6: after removing the bearing seat, place it on the axle part protected on both sides of the gear box, and place the upper box on the driven gear; S7: clean the upper and lower boxes, the bearing seat GW, the bearing seat GM and the adjusting gasket; S8: install the guide bolt on the M16 process hole on the box, then apply 1215 sealant to the root of the end face of the bearing seat, install the bearing seats on both sides on the upper box by means of the guide bolt, and pre-tighten the bolts connecting the bearing seat and the upper box; S9: apply 1215 sealant to the joint surface of the lower box; S10: use a hydraulic platform vehicle to lift the lower gear box to the installation position, pre-tighten the bolts connecting the bearing seat and the lower box, and the bolts on the joint surface; S11: tighten the joint surface according to the specified torque, first tighten the bolts on the joint surface, and then tighten the bolts on the bearing seat; S12: tighten the oil discharging screw plug, tighten the oil discharging screw plug, and bind the anti-loosening wire; S13: unscrew the oil filling screw plug, add new gear box lubricating oil to the middle of the scale line; S14: tighten the oil filling screw plug, tighten the oil filling screw plug, and bind the anti-loosening wire; S15: let the gear box stand still to allow the sealant to solidify.

2. A method of disassembling a metro gear transmission device under a vehicle according to claim 1, characterized in that: In the step S7, the bearing inner ring and the sealing ring are protected by wrapping them with cloth to prevent foreign matter from falling into the bearing.

3. A method of disassembling a metro gear transmission device under a vehicle according to claim 1, characterized in that: In the step S8, a gap of about 5mm is left between the bearing seat and the gear box mounting surface when assembling the bearing seats on both sides, a limiting tool is used to limit the bearing seat to ensure that the sealant is not scratched.

4. A method of disassembling a metro gear transmission device under a vehicle according to claim 3, characterized in that: The limiting tool comprises a tool body and a strong magnet, the tool body is arc-shaped, the upper end face of the tool body is a limiting face, an opening connecting groove matched with the bearing seat is formed in the lower end face of the tool body, the tool body is magnetically fixed with the bearing seat through the strong magnet arranged in the lower end face, the strong magnet is detachably installed in the lower end face of the tool body through bolt embedding, and a notch is formed in the inner side of the middle segment of the tool body.

5. A method of disassembling a metro gear transmission device under a vehicle according to claim 4, characterized in that: The upper end face of the tool body is composed of a first limiting face in the form of a plane on the inner side and a second limiting face in the form of an inclined plane arranged outside the first limiting face, and the vertical distance from the end of the second limiting face away from the first limiting face to the first limiting face is 5mm.

6. A method of disassembling a metro gear transmission device under a vehicle according to claim 1, characterized in that: In the step S9, the inner cavity edge of the lower box joint surface is not coated with sealant at a position of 7-10mm.

7. A method of disassembling a metro gear transmission device under a vehicle according to claim 1, characterized in that: In the step S11, the tightening sequence of the bolts on the joint surface is from the inner side to the outer side, and the tightening sequence of the bolts on the bearing seat is in the diagonal ten direction.

8. A method of disassembling a metro gear transmission device under a vehicle according to claim 1, characterized in that: After the step 14, the appearance of the gear box is observed and detected manually, and the paint is supplemented and the anti-loosening mark is drawn according to the actual situation.

9. The method and tooling for disassembling the metro gear transmission device under the vehicle according to claim 1, characterized in that: In the step S15, the standing time of the gear box is controlled to be 12 hours or more.

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