Auxiliary device for disassembling and assembling universal shaft of motor train unit

Abstract

The utility model discloses a motor train unit cardan shaft dismounting auxiliary device, and belongs to the field of motor train unit cardan shaft dismounting. The technical problems that when the universal shaft of the motor train unit is disassembled and assembled, labor intensity is large, efficiency is low, and potential personal safety hazards exist are solved. The lifting mechanism is arranged in the center of the interior of the frame, the top end of the lifting mechanism is fixedly connected with the liftable top face of the frame, the jacking guide column is arranged in the center of the top face of the frame, and the driving mechanism is installed on the lower portion of the side face of the frame and is in transmission connection with the bottom vehicle wheels. The secondary vehicle comprises a platform, a hand-cranking lifter, a buffer shock absorber, a sliding block, a sliding rail and a cardan shaft lifting frame, hand-cranking lifting mechanisms are installed at the front end and the rear end of the cardan shaft lifting frame, the buffer shock absorber is installed at the bottom of the center of the cardan shaft lifting frame, the sliding block is connected to the bottom of the buffer shock absorber, the sliding rail is arranged on the lower portion of the sliding block, and the sliding block is in sliding connection with the sliding rail; the sliding rail is fixedly installed on the top face of the platform. And staff reduction and efficiency improvement are fully realized. The universal shaft dismounting device is used for dismounting the universal shaft.

Description

Technical Field

[0001] The utility model relates to an auxiliary device for disassembling and assembling a cardan shaft of an EMU, belonging to the field of disassembling and assembling a cardan shaft of an EMU. Background Art

[0002] In recent years, with the development of equipment, improving production efficiency, reducing staff and increasing efficiency, reducing labor intensity and reducing occupational hazards, mechanization of EMU maintenance, safe operation and civilized operation are the inevitable trends in the development of factory and section maintenance production technology.

[0003] When EMUs are undergoing factory repairs and section repairs, the universal joints need to be replaced periodically. Currently, this is mainly done by manpower or manpower with the aid of tools. One car has eight sections and is divided into two teams, each with six people. The work takes about 4 to 5 hours to complete with the aid of manpower, tools and tools. The disassembly and assembly of the universal joints of EMUs is labor-intensive, inefficient, and less civilized. There are greater risks to personal safety and high requirements on the skills and proficiency of the workers.

[0004] In summary, the prior art has technical problems such as high labor intensity, low efficiency and potential safety hazards when disassembling and assembling the universal joint shaft of an EMU. Summary of the invention

[0005] The utility model aims to solve the technical problems of high labor intensity, low efficiency and potential safety hazards in disassembling and assembling the universal shaft of a motor vehicle group, and thus provides an auxiliary device for disassembling and assembling the universal shaft of a motor vehicle group.

[0006] The technical scheme of the utility model is an auxiliary device for disassembling and assembling a universal joint shaft of an EMU, comprising a bottom car and a secondary car located on the top of the bottom car, the bottom car comprising a frame, a lifting mechanism, a lifting guide column and a driving mechanism, the frame comprising a liftable top surface, the lifting mechanism is arranged at the inner center of the frame, the top end of the lifting mechanism is fixedly connected with the liftable top surface of the frame, the lifting guide column is arranged at the center of the top surface of the frame, the bottom of the frame is equipped with bottom car wheels, the driving mechanism is arranged at the lower part of the side of the frame, and the driving mechanism is drivingly connected with the bottom car wheels;

[0007] The secondary vehicle includes a platform, a hand-cranked lifter, a buffer shock absorber, a slider, a slide rail and a universal shaft lifting frame. The front and rear ends of the universal shaft lifting frame are equipped with hand-cranked lifters, the central bottom of the universal shaft lifting frame is equipped with a buffer shock absorber, the bottom of the buffer shock absorber is connected with a slider, the lower part of the slider is provided with a slide rail, the slider is slidably connected to the slide rail, the slide rail is fixedly installed on the top surface of the platform, and the bottom of the frame platform is equipped with wheels of the secondary vehicle.

[0008] As another improvement of the utility model, the lifting mechanism is a scissors-type lift, which includes a machine base, a scissors-type support rod and a cylinder. The cylinder is obliquely supported between the machine base and the scissors-type support rod, and the top end of the scissors-type support rod is connected to the top surface of the frame.

[0009] As another improvement of the utility model, the lifting guide column comprises a guide column body, a bearing and a bearing frame, and the guide column body is installed at the center of the top surface of the frame through the bearing and the bearing frame.

[0010] As another improvement of the utility model, the driving mechanism includes a battery, a servo motor and a reducer. The battery and the servo motor are installed on the lower side of the frame, and the servo motor drives the wheels of the bottom vehicle through the reducer.

[0011] As another improvement of the utility model, the hand-cranked lifter includes a handwheel, a reversing reducer, a screw rod and a nut. The screw rod is vertically arranged at the front and rear ends of the universal joint lifting frame. The handwheel is rotatably connected to the nut through the reversing reducer. The nut and the screw rod cooperate to form a screw transmission. Rotating the handwheel drives the nut to rotate through the reversing reducer and then drives the screw rod to rise and fall. A lifting platform is installed on the top of the screw rod.

[0012] As another improvement of the utility model, the universal joint shaft lifting frame includes a front end lifting platform and a rear end lifting platform, the front end lifting platform is used to lift the front section of the universal joint shaft, and the rear end lifting platform is used to lift the rear section of the universal joint shaft.

[0013] As another improvement of the utility model, it is characterized in that the undercarriage further includes an anti-collision mechanism, the anti-collision mechanism includes anti-collision protrusions, and the two anti-collision protrusions are respectively arranged on the front and rear end surfaces of the frame.

[0014] As another improvement of the utility model, the side of the vehicle frame including the liftable top surface is hingedly connected with a lap bridge.

[0015] As another improvement of the utility model, a positioning frame is installed at the center of the bottom of the frame platform.

[0016] Beneficial effects of the utility model:

[0017] 1. The utility model adopts the cooperation of the bottom car and the second car, which can automatically travel and automatically lift and lower in a large range, and is combined with manual small-range adjustment to assist in the disassembly and installation of the EMU cardan shaft. It conforms to the process procedures and processes for the disassembly and installation of the EMU cardan shaft. It reduces the labor intensity of the EMU cardan shaft during disassembly and installation, improves the operation efficiency, and reduces the safety hazards during construction; it conforms to the process flow of the cardan shaft disassembly and installation, and is suitable for the installation and disassembly process of the cardan shaft. The movement of the RGV bottom car and the lifting and lowering of the cardan shaft are completely electrically driven, and the lifting and lowering of the cardan shaft can be completed in about 10 to 20 seconds. It improves the operation efficiency, reduces the labor intensity, and fully realizes the reduction of staff and increase of efficiency.

[0018] 2. The utility model is applicable to all different types of motor vehicles and has strong versatility. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1The utility model is a schematic diagram of the overall structure of a universal joint shaft disassembly and assembly auxiliary device for a motor vehicle unit, wherein A is a steel rail of a workshop track bridge, B is a column of a workshop track bridge, and C is a trench of the workshop track bridge.

[0020] Figure 2 It is a structural diagram of the bottom vehicle.

[0021] Figure 3 This is a schematic diagram of the structure of a second-level vehicle.

[0022] Figure 4 It is a structural diagram of a hand-cranked lift. DETAILED DESCRIPTION

[0023] The following will be combined with the drawings in the examples of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments of the utility model, all embodiments obtained by ordinary technicians in this field without creative work belong to the scope of protection of the utility model. In the description of the utility model, it should be explained that the positional relationship indicated by the terms "upper" and "lower" is only based on the positional relationship of the orientation shown in the drawings, which is only for the convenience of describing the utility model, and does not indicate or imply that the referred parts have a specific orientation, are constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the utility model.

[0024] Specific implementation method 1: Combination Figures 1 to 4 The present embodiment is described. The present embodiment is a universal joint shaft disassembly and assembly auxiliary device for a motor vehicle unit, comprising a bottom car 1 and a secondary car 2 located on the top of the bottom car 1. The bottom car 1 comprises a frame 11, a lifting mechanism 12, a lifting guide column 13 and a driving mechanism 14. The frame 11 comprises a liftable top surface. The lifting mechanism 12 is arranged at the inner center of the frame 11. The top end of the lifting mechanism 12 is fixedly connected to the liftable top surface of the frame 11. The lifting guide column 13 is arranged at the center of the top surface of the frame 11. The bottom of the frame 11 is provided with bottom car wheels. The driving mechanism 14 is arranged at the lower part of the side of the frame 11. The driving mechanism 14 is drivingly connected to the bottom car wheels.

[0025] The bottom car adopts RGV bottom car. The frame is the basic platform of RGV bottom car equipment, providing operators with working platforms of different heights to receive and release the secondary car. The lifting mechanism is used to lift and lower or carry the cardan shaft secondary car. It assists in the removal and installation of the cardan shaft. The lifting guide column is used to participate in the introduction and center positioning of the secondary car. The driving mechanism is used to drive the RGV bottom car to move.

[0026] The secondary vehicle 2 includes a platform 21, a hand-operated lifter 22, a buffer shock absorber 24, a slider 25, a slide rail and a universal shaft lifting frame 27. The hand-operated lifter 22 is installed at both the front and rear ends of the universal shaft lifting frame 27. The buffer shock absorber 24 is installed at the central bottom of the universal shaft lifting frame 27. The bottom of the buffer shock absorber 24 is connected to the slider 25. The lower part of the slider 25 is provided with a slide rail. The slider 25 is slidably connected to the slide rail. The slide rail is fixedly installed on the top surface of the platform 21. The bottom of the platform 21 is installed with the wheels of the secondary vehicle.

[0027] The platform 21 is the basic equipment of the second-level vehicle. The hand-cranked lifter 22 is used to manually fine-tune the height of the universal shaft to be disassembled and assembled. The buffer shock absorber 24 is used to reduce the impact force generated when placing the universal shaft to avoid damage to related parts caused by abnormal placement; the buffer shock absorber 24 can reduce the bumps that may occur when the universal shaft is relative to the ground, thereby preventing the universal shaft from vibrating. The slider 25 cooperates with the slide rail to further correct the position of the universal shaft; the mounting bolt at one end of the universal shaft is threaded, which is convenient for aligning the bolt and the flange bolt hole, and easily completing the push-through action, thereby improving work efficiency.

[0028] The EMU universal shaft disassembly and assembly auxiliary device of this embodiment can reduce the labor intensity when disassembling and assembling the EMU universal shaft, improve the operation efficiency, and reduce the safety hazards during construction; it complies with the process flow of universal shaft disassembly and assembly, and is suitable for the installation and disassembly process of universal shaft. The RGV bottom car movement, universal shaft lifting and lowering are completely electrically driven, and the universal shaft lifting and lowering can be completed in about 10 to 20 seconds. It improves the operation efficiency, reduces the labor intensity, and fully realizes the reduction of staff and increase of efficiency. During the disassembly and assembly operation, manual manpower handling and laying of trench covers are avoided; the equipment of this embodiment can be applied to all different types of EMUs and has strong versatility.

[0029] The bottom car is placed in the trench of the rail bridge in the maintenance workshop and arranged in the direction of the trench. It passes along the pre-laid track in the trench of the rail bridge. The bottom car is electrically and electronically moved to the position where the universal shaft needs to be disassembled. Prepare to receive the second-level car, rotate the universal shaft 50 degrees in advance and preset 50 degrees, so that the universal shaft can be easily and smoothly rotated and lifted to the predetermined position of the disassembly and assembly height. In order to ensure the safety of carrying the second-level car, the second-level car is reliably positioned and connected with the RGV bottom car.

[0030] The fine-tuning secondary car is pushed by manpower to move, which provides convenience for the precise position adjustment of the universal shaft and can easily install and disassemble the universal shaft of the motor vehicle. It can minimize the labor intensity and realize civilized and safe disassembly and assembly operations.

[0031] This implementation method can fully ensure the safety and convenience of the operators, and can automatically travel and automatically lift up and down in a large range, combined with manual small-range adjustment to assist in the disassembly and installation of the EMU cardan shaft. It complies with the process and flow of disassembly and installation of the EMU cardan shaft, greatly reduces the requirements for the proficiency of the operators, reduces labor intensity, and improves work efficiency.

[0032] Specific implementation method 2: Combination Figure 1 and Figure 2 This embodiment is described. The difference between this embodiment and the first embodiment is that the lifting mechanism 12 is a scissor lift, which includes a machine base, a scissor support rod and a cylinder. The cylinder is diagonally supported between the machine base and the scissor support rod, and the top of the scissor support rod is connected to the top surface of the frame 11. The lifting mechanism 12 is a relatively independent scissor lift platform, which is used to lift, lower or carry the cardan shaft secondary vehicle. It assists in the disassembly and installation of the cardan shaft, and receives and releases the secondary vehicle. Other components and connection methods are the same as those of the first embodiment.

[0033] Specific implementation method three: Combination Figure 1 and Figure 2 This embodiment is described. The difference between this embodiment and the first embodiment is that the lifting guide column 13 includes a guide column body, a bearing and a bearing frame. The guide column body is installed in the center of the top surface of the frame 11 through the bearing and the bearing frame. The lifting guide column is composed of a guide column, a linear rolling bearing, an axial thrust bearing, a universal ball bearing, and a bracket. The lifting guide column is placed in the middle of the lifting platform of the lifting mechanism, and is used to participate in the introduction and center positioning of the secondary vehicle. Other components and connection methods are the same as those of the first or second embodiment.

[0034] Specific implementation method four: Combination Figure 1 and Figure 2 This embodiment is described. The difference between this embodiment and the first embodiment is that the driving mechanism 14 includes a battery, a servo motor and a reducer. The battery and the servo motor are installed on the lower side of the frame 11. The servo motor drives the wheels of the bottom vehicle through the reducer. The battery is a lithium battery, the servo motor is a DC motor, and the reducer is a precision planetary reducer. The driving mechanism drives the wheels of the bottom vehicle and then drives the bottom vehicle. The other components and connection methods are the same as any one of the first to third embodiments.

[0035] Specific implementation method five: Combination Figure 1 , Figure 3 and Figure 4 This embodiment is described. The difference between this embodiment and the specific embodiment 1 is that the hand-cranked lifter 22 includes a hand wheel 30, a reversing reducer 31, a screw rod 32 and a nut. The screw rod 32 is vertically arranged at the front and rear ends of the universal shaft lifting frame 27. The hand wheel 30 is rotatably connected with the nut through the reversing reducer 31. The nut and the screw rod 32 cooperate to form a screw transmission. The rotating hand wheel 30 drives the nut to rotate through the reversing reducer 31 and then drives the screw rod 32 to rise and fall. A lifting platform 26 is installed on the top of the screw rod 32. The function is to manually adjust the lifting range of the universal shaft in a small range. The other components and connection methods are the same as any one of the specific embodiments 1 to 4.

[0036] Specific implementation method six: Combination Figure 1 and Figure 3 This embodiment is described. The difference between this embodiment and the specific embodiment 1 is that the universal shaft lifting frame 27 includes a front lifting platform 28 arranged at the front end of the universal shaft lifting frame 27 and a rear lifting platform 29 arranged at the rear end of the universal shaft lifting frame 27. The front lifting platform 28 is used to lift the front section of the universal shaft, and the rear lifting platform 29 is used to lift the rear section of the universal shaft. Other components and connection methods are the same as any one of the specific embodiments 1 to 5.

[0037] Specific implementation method seven: Combination Figure 1 and Figure 3 This embodiment is described. The difference between this embodiment and the first embodiment is that the bottom vehicle 1 further includes an anti-collision mechanism 15, and the anti-collision mechanism 15 includes anti-collision protrusions, and the two anti-collision protrusions are respectively arranged on the front and rear end surfaces of the vehicle frame 11. The other components and connection methods are the same as any one of the first to sixth embodiments.

[0038] Specific implementation method eight: Combination Figure 1 and Figure 3 This embodiment is described. In the figure, A is the rail of the workshop track bridge, B is the column of the workshop track bridge, and C is the trench of the workshop track bridge. The difference between this embodiment and the specific embodiment 1 is that the side of the top surface of the frame 11 is hinged with a lap board 16. The lap board is hinged on the side of the top surface, and the outer edge of the lap board is overlapped on the ground between the trench of the workshop track bridge and the column of the workshop track bridge. The rail of the workshop track bridge is installed on the column of the workshop track bridge. The lap board is used to receive and release the secondary car to improve work efficiency. The other components and connection methods are the same as any one of the specific embodiments 1 to 7.

[0039] Specific implementation method nine: Combination Figure 1 and Figure 3 This embodiment is described. The difference between this embodiment and the first embodiment is that the second-stage vehicle 2 further includes a positioning frame 23, and a positioning frame 23 is installed at the bottom center of the platform 21. The function is to participate in the small lifting and introduction, center positioning, rotation and rotation positioning of the universal shaft.

[0040] Combination Figures 1 to 4 Explain the working principle of this utility model:

[0041] The remote control is turned on, and the program is used for pre-positioning. The RGV bottom vehicle rotation center is pre-positioned to be flush with the center line of the track bridge column, and pre-positioned at the nearest point to the universal joint to be installed.

[0042] Overlap the overlapping ferry plate and the cement floor flush. Push in the secondary vehicle with the universal shaft at an angle of about 50 degrees. Note: The motor end of the universal shaft is placed on the front support frame of the secondary vehicle. Center the secondary vehicle and lift it slightly by 10mm. Rotate 50 degrees by manpower and position it naturally at the limit. Use the remote control to control the lifting mechanism, lift 50mm to 80mm, and lock the secondary vehicle. Flip up one end of the overlapping ferry plate and turn it over on the bottom vehicle platform. Move the bottom vehicle at a low speed for the second time to the required position. Continue to use the remote control or laser positioning to accurately position it under the position of the universal shaft to be installed.

[0043] Lift the universal joint and the universal joint transfer fine-tuning secondary vehicle to the set height and stop automatically. Adjust the height and angle of the universal joint motor end with preset height and angle accurately, connect the universal joint motor end flange bolt hole with the motor flange thread, unlock the slide, push the slide together with the universal joint, eliminate the excess between the universal joint motor end flange and the motor flange, and lock the slide. Pre-install the other end of the universal joint, push the universal joint back, eliminate the swing angle, accurately adjust the flange hole, install other flange bolts and nuts, and tighten them according to the specified method. Manually adjust the handwheel to separate the universal joint transfer fine-tuning secondary vehicle from the installed universal joint, and lower the lifting mechanism in the RGV bottom vehicle to the ground height. Overlap the lap board at one end with the cement floor, and rotate it 50 degrees together with the secondary vehicle. At the same time, push the universal joint transfer fine-tuning secondary vehicle to the cement floor. Flip the lap board at one end upward and flip it on the RGV bottom vehicle platform. Complete an installation work cycle.

[0044] The removal operation of the cardan shaft is similar to the installation operation, except that the process of transferring and fine-tuning the cardan shaft on the secondary vehicle carrying the cardan shaft is reversed.

[0045] The above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit it. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that the technical solutions described in the aforementioned embodiments may still be modified, or some of the technical features may be replaced by equivalents. However, these modifications or replacements do not deviate the essence of the corresponding technical solutions from the spirit and scope of the technical solutions of the embodiments of the present invention.

Claims

1. An auxiliary device for disassembling and assembling a universal joint shaft of an EMU, Features It comprises a bottom car (1) and a secondary car (2) located on the top of the bottom car (1), the bottom car (1) comprising a frame (11), a lifting mechanism (12), a lifting guide column (13) and a driving mechanism (14), the frame (11) comprising a liftable top surface, the lifting mechanism (12) being arranged at the inner center of the frame (11), the top end of the lifting mechanism (12) being fixedly connected to the liftable top surface of the frame (11), the lifting guide column (13) being arranged at the center of the top surface of the frame (11), the bottom of the frame (11) being provided with bottom car wheels, the driving mechanism (14) being arranged at the lower part of the side of the frame (11), and the driving mechanism (14) being drivingly connected to the bottom car wheels; The secondary vehicle (2) comprises a platform (21), a hand-operated lifter (22), a buffer shock absorber (24), a slider (25), a slide rail and a universal shaft lifting frame (27). The hand-operated lifter (22) is installed at both the front and rear ends of the universal shaft lifting frame (27). The buffer shock absorber (24) is installed at the central bottom of the universal shaft lifting frame (27). The bottom of the buffer shock absorber (24) is connected with the slider (25). The lower part of the slider (25) is provided with a slide rail. The slider (25) is slidably connected with the slide rail. The slide rail is fixedly installed on the top surface of the platform (21). The bottom of the platform (21) is equipped with wheels of the secondary vehicle.

2. The EMU universal shaft disassembly and assembly auxiliary device according to claim 1, It is characterized in that The lifting mechanism (12) is a scissor-type lift, which comprises a machine base, a scissor-type support rod and an oil cylinder. The oil cylinder is obliquely supported between the machine base and the scissor-type support rod, and the top end of the scissor-type support rod is connected to the top surface of the vehicle frame (11).

3. The EMU universal shaft disassembly and assembly auxiliary device according to claim 1, It is characterized in that The lifting guide column (13) comprises a guide column body, a bearing and a bearing frame, and the guide column body is installed at the center of the top surface of the vehicle frame (11) through the bearing and the bearing frame.

4. The EMU universal shaft disassembly and assembly auxiliary device according to claim 1, It is characterized in that The driving mechanism (14) comprises a battery, a servo motor and a reducer. The battery and the servo motor are mounted on the lower side of the vehicle frame (11). The servo motor drives the wheels of the vehicle through the reducer.

5. The EMU universal shaft disassembly and assembly auxiliary device according to claim 1, It is characterized in that The hand-operated lifting device (22) comprises a hand wheel (30), a reversing reducer (31), a screw rod (32) and a nut. The screw rod (32) is vertically arranged at the front and rear ends of the universal shaft lifting frame (27). The hand wheel (30) is rotatably connected with the nut through the reversing reducer (31). The nut and the screw rod (32) cooperate to form a screw transmission. Rotating the hand wheel (30) drives the nut to rotate through the reversing reducer (31) and then drives the screw rod (32) to rise and fall. A lifting platform (26) is installed at the top of the screw rod (32).

6. The EMU universal shaft disassembly and assembly auxiliary device according to claim 1, It is characterized in that The universal shaft lifting frame (27) comprises a front lifting platform (28) arranged at the front end of the universal shaft lifting frame (27) and a rear lifting platform (29) arranged at the rear end of the universal shaft lifting frame (27). The front lifting platform (28) is used to lift the front section of the universal shaft, and the rear lifting platform (29) is used to lift the rear section of the universal shaft.

7. An auxiliary device for disassembling and assembling a universal joint shaft of an EMU according to any one of claims 1 to 6, It is characterized in that The undercarriage (1) also includes an anti-collision mechanism (15), the anti-collision mechanism (15) includes anti-collision protrusions, and the two anti-collision protrusions are respectively arranged on the front and rear end surfaces of the vehicle frame (11).

8. The EMU universal shaft disassembly and assembly auxiliary device according to claim 1, It is characterized in that A lap bridge plate (16) is hingedly connected to the side edge of the top surface of the vehicle frame (11).

9. The EMU universal shaft disassembly and assembly auxiliary device according to claim 1, It is characterized in that The secondary vehicle (2) further comprises a positioning frame (23), and the positioning frame (23) is installed at the center of the bottom of the platform (21).

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