Motor train unit cardan shaft replacement equipment

Abstract

The utility model relates to the field of cardan shaft replacement, and particularly discloses a motor train unit cardan shaft replacement device, which comprises a movable lifting mechanism, a movable lifting mechanism, a movable lifting mechanism, a movable lifting mechanism, a movable lifting mechanism, a movable lifting mechanism, a movable lifting mechanism, a movable lifting mechanism, a movable lifting mechanism, a movable lifting mechanism, a movable lifting mechanism and a movable lifting mechanism, and the movable lifting mechanism comprises a movable frame assembly, a support frame assembly and a jack, the jack drives the supporting frame assembly to slide up and down along the moving frame assembly. The inclined supporting mechanism comprises a base assembly clamped and embedded in the supporting frame assembly; the inclination angle of the placing frame assembly is adjusted through the electric telescopic rod, adjustment can be rapidly conducted according to the actual installation position and angle of the universal shaft of the motor train unit, the flexibility enables the device to adapt to the motor train units of different models and specifications, and the efficiency of replacing the universal shaft is greatly improved; and the whole equipment can be easily moved through the handle and the moving wheels, so that the equipment can quickly arrive at a working site.

Description

Technical Field

[0001] The utility model belongs to the field of cardan shaft replacement, in particular to a device for replacing the cardan shaft of an EMU. Background Art

[0002] EMUs, especially those with distributed power like the CRH5, are complex in design and structure, requiring an efficient transmission system to ensure power is transmitted from the traction motor to the gearbox, thereby driving the vehicle forward. The CRH5 EMU utilizes the CW250(D) bogie, which was developed through design improvements and solution optimization based on the non-swaying bogie TAV-S104. The EMU's cardan shaft, a key component of this transmission system, is mounted on the gearbox at one end and on the traction motor's safety coupling at the other. It is responsible for transmitting the traction torque from the traction motor to the gearbox.

[0003] However, as the EMU's operating time accumulates, the universal joint may fail due to wear, aging, etc., requiring maintenance, care, and replacement.

[0004] In the traditional replacement process, the replacement of EMU universal joints often relies on manual adjustment and handling, which is not only time-consuming and labor-intensive, but also inefficient and poses a high safety risk. Utility Model Content

[0005] In order to solve the above technical problems, the utility model provides a universal joint replacement device for EMUs to solve the problem that the replacement of universal joints for EMUs in the existing technology often relies on manual adjustment and transportation, which is not only time-consuming and labor-intensive, but also inefficient and poses a high safety risk.

[0006] A device for replacing a universal joint shaft of an EMU, comprising:

[0007] The mobile lifting mechanism includes a mobile frame assembly, a support frame assembly slidably embedded in the mobile frame assembly, and a jack installed between the mobile frame assembly and the support frame assembly, wherein the jack drives the support frame assembly to slide up and down along the mobile frame assembly;

[0008] The tilt support mechanism includes a base assembly embedded in the support frame assembly, a placement frame assembly rotatably embedded in the base assembly, and a telescopic assembly installed between the base assembly and the placement frame assembly, wherein the telescopic assembly drives the placement frame assembly to rotate around the base assembly;

[0009] The base assembly includes a T-shaped base, one end of which is fixedly connected to a shaft;

[0010] The placing rack assembly includes a placing rack body, and one end of the bottom of the placing rack body is fixedly connected to an axis hole frame;

[0011] The telescopic assembly includes an electric telescopic rod, one end of which is rotatably connected to a first rotating frame, and the other end of which is rotatably connected to a second rotating frame;

[0012] The T-shaped base is embedded in the support frame assembly, the shaft hole frame is rotatably embedded in the shaft rod, the first rotating frame is fixedly installed on the outer side of the T-shaped base, and the second rotating frame is fixedly installed on the outer side of the placement frame body.

[0013] Preferably, a rubber pad is further provided on the upper side of the placement rack body.

[0014] Preferably, the rack body is further provided with an adjustable strap.

[0015] Preferably, the movable frame assembly includes a U-shaped frame, the bottom of the U-shaped frame is fixedly connected to a plurality of movable wheels, the upper side of the U-shaped frame is also fixedly connected to a supporting vertical frame, and the upper side of the supporting vertical frame is also fixedly connected to a handle.

[0016] Preferably, the support frame assembly includes a connecting rod, one side of the connecting rod is rotatably connected to a group of support frame bodies, and the outer side of the connecting rod is also fixedly connected to a guide sleeve.

[0017] Preferably, the guide sleeve is slidably embedded in the supporting vertical frame, the bottom of the jack is fixedly mounted on the U-shaped frame, and the upper end of the jack is fixedly connected to the bottom of the connecting rod;

[0018] The T-shaped base limiting card is embedded in a group of support frame bodies.

[0019] Compared with the prior art, the present invention has the following beneficial effects:

[0020] The tilt angle of the placement rack assembly can be adjusted by an electric telescopic rod, which can quickly adjust the actual installation position and angle of the EMU cardan shaft. This flexibility allows the equipment to adapt to EMUs of different models and specifications, greatly improving the efficiency of replacing the cardan shaft.

[0021] The entire equipment can be easily moved by the handle and moving wheels, so that it can quickly reach the job site. At the same time, the jack drive enables the new universal joint shaft to be quickly raised and lowered to the appropriate height, thereby greatly shortening the replacement time and improving work efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 This is a schematic diagram of the overall structure of the utility model;

[0023] Figure 2 This is a schematic diagram of the exploded structure of the utility model;

[0024] Figure 3This is a schematic structural diagram of the tilt support mechanism of the utility model;

[0025] Figure 4 This is a structural diagram of the mobile lifting mechanism of the utility model.

[0026] In the figure: 1. Mobile lifting mechanism; 11. Mobile frame assembly; 111. U-shaped frame; 112. Moving wheel; 113. Support vertical frame; 114. Handle; 12. Support frame assembly; 121. Connecting rod; 122. Support frame body; 123. Guide sleeve; 13. Jack; 2. Tilt support mechanism; 21. Base assembly; 211. T-shaped base; 212. Shaft; 22. Placement frame assembly; 221. Placement frame body; 222. Shaft hole frame; 223. Adjustable strap; 23. Telescopic assembly; 231. Electric telescopic rod; 232. Rotating frame 1; 233. Rotating frame 2; 3. Universal shaft. DETAILED DESCRIPTION

[0027] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the embodiments described are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0028] like Figures 1 to 4 As shown:

[0029] Embodiment 1: The present invention provides a device for replacing a cardan shaft of an EMU, comprising:

[0030] The mobile lifting mechanism 1 includes a mobile frame assembly 11, a support frame assembly 12 that is slidably embedded in the mobile frame assembly 11, and a jack 13 installed between the mobile frame assembly 11 and the support frame assembly 12. The jack 13 drives the support frame assembly 12 to slide up and down along the mobile frame assembly 11;

[0031] The tilt support mechanism 2 includes a base assembly 21 that is embedded in the support frame assembly 12, a placement frame assembly 22 that is rotatably embedded in the base assembly 21, and a telescopic assembly 23 installed between the base assembly 21 and the placement frame assembly 22. The telescopic assembly 23 drives the placement frame assembly 22 to rotate around the base assembly 21.

[0032] The base assembly 21 includes a T-shaped base 211 , one end of which is fixedly connected to a shaft 212 ;

[0033] The placement rack assembly 22 includes a placement rack body 221, and one end of the bottom of the placement rack body 221 is fixedly connected to an axis hole frame 222;

[0034] The telescopic assembly 23 includes an electric telescopic rod 231, one end of which is rotatably connected to a rotating frame 1 232, and the other end of which is rotatably connected to a rotating frame 233;

[0035] The T-shaped base 211 is embedded in the support frame assembly 12, the shaft hole frame 222 is rotatably embedded in the shaft 212, the rotating frame 1 232 is fixedly installed on the outside of the T-shaped base 211, and the rotating frame 233 is fixedly installed on the outside of the placement frame body 221;

[0036] When replacing the universal joint, after removing the old universal joint, the tilt angle of the placement frame assembly 22 is adjusted by the electric telescopic rod 231 according to the installation position and angle of the universal joint of the EMU;

[0037] The first rotating frame 232 and the second rotating frame 233 are fixed to the T-shaped base 211 and the placement frame body 221 respectively. The electric telescopic rod 231 is controlled to rotate the shaft hole frame 222 around the shaft 212, thereby adjusting the tilt angle of the placement frame body 221.

[0038] Place the new universal shaft 3 on the placement rack body 221;

[0039] Push the moving frame assembly 11 to the lower end of the position where the universal joint shaft is to be installed on the EMU;

[0040] The jack 13 is controlled to work so that the support frame assembly 12 moves upward. The upward movement of the support frame assembly 12 causes the tilt support mechanism 2 to drive the new universal shaft 3 to move upward.

[0041] After the new universal joint 3 reaches the appropriate height, use professional tools to connect the new universal joint 3 to the gearbox and traction motor, and tighten the connecting bolts according to the specified torque.

[0042] Specifically, a rubber pad is further provided on the upper side of the placement rack body 221 .

[0043] Specifically, an adjustable strap 223 is further provided on the placement rack body 221 .

[0044] As can be seen from the above, the rubber pad on the upper side of the placement frame body 221 can reduce the damage to the universal joint 3, and the adjustable strap 223 can fix the universal joint 3 to prevent the universal joint 3 from falling off during movement.

[0045] Embodiment 2: This embodiment is basically the same as the previous embodiment, except that the movable frame assembly 11 includes a U-shaped frame 111, the bottom of the U-shaped frame 111 is fixedly connected to a plurality of movable wheels 112, the upper side of the U-shaped frame 111 is also fixedly connected to a supporting vertical frame 113, and the upper side of the supporting vertical frame 113 is also fixedly connected to a handle 114.

[0046] Specifically, the support frame assembly 12 includes a connecting rod 121 , one side of the connecting rod 121 is rotatably connected to a group of support frame bodies 122 , and the outer side of the connecting rod 121 is also fixedly connected to a guide sleeve 123 .

[0047] Specifically, the guide sleeve 123 is slidably embedded in the support vertical frame 113, the bottom of the jack 13 is fixedly mounted on the U-shaped frame 111, and the upper end of the jack 13 is fixedly connected to the bottom of the connecting rod 121;

[0048] The T-shaped base 211 is limitedly clipped onto a set of support frame bodies 122 .

[0049] As can be seen from the above, the support frame body 122 is rotated to a designated position, and the tilt support mechanism 2 is placed on the support frame body 122 through the T-shaped base 211;

[0050] According to the specific installation angle of the EMU cardan shaft, the tilt angle of the placement rack assembly 22 is adjusted by the electric telescopic rod 231;

[0051] Place the new universal joint 3 on the adjusted placement frame body 221 .

[0052] Use the handle 114 to push or pull the U-shaped frame 111 so that the U-shaped frame 111 and the entire equipment thereon are moved to the lower end of the position where the universal joint shaft is to be installed on the EMU via the moving wheels 112;

[0053] The jack 13 is controlled to work, thereby driving the connecting rod 121 to slide up and down along the supporting vertical frame 113 through the guide sleeve 123 .

[0054] As the connecting rod 121 rises, the tilt support mechanism 2 drives the new universal shaft 3 to move upward to a suitable height.

[0055] Install the new universal joint shaft:

[0056] When the new universal joint shaft 3 reaches the appropriate height, use professional tools to connect it to the gearbox and traction motor.

[0057] Tighten the connecting bolts according to the specified torque to ensure a firm and reliable connection.

[0058] Application Process:

[0059] 1. Preparation

[0060] Equipment inspection and assembly:

[0061] Check whether all parts of the EMU universal joint replacement equipment are intact, including the mobile lifting mechanism 1, the tilting support mechanism 2 and their various components.

[0062] Confirm that the power components such as the electric telescopic rod 231 and the jack 13 are working properly.

[0063] Assemble the equipment completely and ensure that all parts are firmly connected without any looseness.

[0064] Safety preparation:

[0065] Wear safety protection equipment, such as safety helmet, gloves, protective glasses, etc.

[0066] Make sure the work area is free of debris to avoid accidents during the replacement process.

[0067] 2. Disassemble the old universal joint

[0068] Positioning and disassembly:

[0069] Use specialized tools to locate and remove the connecting bolts between the old universal joint shaft and the gearbox and traction motor.

[0070] Carefully remove the old universal joint from its installation location, avoiding damage to surrounding components.

[0071] 3. Adjust the equipment and place the new universal joint

[0072] To adjust the tilt support mechanism:

[0073] According to the specific installation position and angle of the universal joint shaft of the EMU, the support frame body 122 is rotated to the specified position.

[0074] Place the tilt support mechanism 2 on the support frame body 122 via the T-shaped base 211 and ensure that it is stable.

[0075] The tilt angle of the placement rack assembly 22 is adjusted by the electric telescopic rod 231 to match the installation angle of the universal shaft.

[0076] Place the new universal joint:

[0077] Place the new universal joint 3 on the adjusted placement frame body 221 and use rubber pads to reduce damage from collisions.

[0078] Use the adjustable strap 223 to fix the universal joint shaft to prevent it from falling off during movement.

[0079] 4. Mobile and lifting equipment

[0080] mobile device:

[0081] Use the handle 114 to push or pull the U-shaped frame 111, and move the device to the lower end of the position where the universal joint shaft is to be installed on the EMU through the moving wheels 112.

[0082] After ensuring that the equipment is stable, prepare for lifting operations.

[0083] Lifting operation:

[0084] The jack 13 is controlled to work, driving the connecting rod 121 to slide up and down along the supporting vertical frame 113 through the guide sleeve 123 .

[0085] As the connecting rod 121 rises, the tilt support mechanism 2 drives the new universal shaft 3 to move upward to a suitable height.

[0086] 5. Install the new universal joint

[0087] Connection and fastening:

[0088] When the new universal joint shaft 3 reaches the appropriate height, use professional tools to connect it to the gearbox and traction motor.

[0089] Tighten the connecting bolts according to the specified torque to ensure a firm and reliable connection.

[0090] Inspection and debugging:

[0091] Perform a visual inspection and functional test on the newly installed universal joint to ensure that it is working properly.

[0092] If necessary, perform necessary debugging and corrections.

[0093] 6. Closing and Cleaning

[0094] Return the device to its original position:

[0095] After completing the replacement, lower the device to its lowest position and use the handle 114 to move it to a safe area.

[0096] Clean and maintain the equipment to ensure it is in good condition the next time you use it.

[0097] Records and Reports:

[0098] Record key steps and data during the replacement process, including installation angle, tightening torque, etc.

[0099] Prepare replacement reports for reference in subsequent maintenance and upkeep.

[0100] All standard parts used in this utility model can be purchased commercially, and special-shaped parts can be customized according to the description in the specification and drawings. The specific connection methods of each part adopt conventional means such as bolts, rivets, welding, etc. that are mature in the existing technology. The machinery, parts and equipment all adopt conventional models in the existing technology. In addition, the circuit connections adopt conventional connection methods in the existing technology and will not be described in detail here. Any matters not described in detail in this specification belong to the existing technology known to professional and technical personnel in this field.

[0101] In the description of this utility model, the terms "first" and "second" are used for descriptive purposes only and should not be understood to indicate or imply relative importance or implicitly specify the number of the technical features indicated. Therefore, a feature specified as "first" or "second" may explicitly or implicitly include one or more of such features. "Multiple" means two or more, unless otherwise specifically defined.

[0102] In this utility model, unless otherwise specified or limited, the terms "installed," "connected," "connect," "fixed," etc. should be understood in a broad sense. For example, they can refer to fixed connection, detachable connection, or integration; mechanical connection, electrical connection; direct connection, indirect connection through an intermediate medium; internal communication between two components, or interaction between two components. Those skilled in the art will understand the specific meanings of the above terms in this utility model based on specific circumstances.

[0103] In the present invention, unless otherwise expressly specified or limited, when a first feature is "above" or "below" a second feature, it may mean that the first and second features are in direct contact, or the first and second features are in indirect contact through an intermediary. Furthermore, when a first feature is "above," "above," or "above" a second feature, it may mean that the first feature is directly above or diagonally above the second feature, or simply means that the first feature is at a higher level than the second feature. When a first feature is "below," "below," or "below" a second feature, it may mean that the first feature is directly below or diagonally below the second feature, or simply means that the first feature is at a lower level than the second feature.

[0104] In the description of this specification, the description with reference to the terms "one embodiment", "some embodiments", "example", "specific example" or "some examples" means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the present invention. In this specification, the schematic expressions of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described can be combined in any one or more embodiments or examples in a suitable manner. In addition, those skilled in the art can combine and combine different embodiments or examples described in this specification and the features of different embodiments or examples without contradiction.

[0105] In the drawings of the embodiments disclosed in the present invention, only the structures related to the embodiments disclosed in the present invention are involved. Other structures can refer to the general design. In the absence of conflict, the same embodiment and different embodiments of the present invention can be combined with each other.

[0106] Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art can still modify the technical solutions described in the aforementioned embodiments, or make equivalent substitutions for some of the technical features therein. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the scope of protection of the present invention.

Claims

1. A cardan shaft replacement device for an EMU, characterized in that: include: The mobile lifting mechanism (1) comprises a mobile frame assembly (11), a support frame assembly (12) slidably engaged with the mobile frame assembly (11), and a jack (13) installed between the mobile frame assembly (11) and the support frame assembly (12), wherein the jack (13) drives the support frame assembly (12) to slide up and down along the mobile frame assembly (11); The tilt support mechanism (2) comprises a base assembly (21) embedded in the support frame assembly (12), a placement frame assembly (22) rotatably embedded in the base assembly (21), and a telescopic assembly (23) installed between the base assembly (21) and the placement frame assembly (22), wherein the telescopic assembly (23) drives the placement frame assembly (22) to rotate around the base assembly (21); The base assembly (21) comprises a T-shaped base (211), one end of the T-shaped base (211) is fixedly connected to a shaft (212); The placement rack assembly (22) comprises a placement rack body (221), and one end of the bottom of the placement rack body (221) is fixedly connected to an axis hole rack (222); The telescopic assembly (23) includes an electric telescopic rod (231), one end of the electric telescopic rod (231) is rotatably connected to a rotating frame 1 (232), and the other end of the electric telescopic rod (231) is rotatably connected to a rotating frame 2 (233); The T-shaped base (211) is embedded in the support frame assembly (12), the shaft hole frame (222) is rotatably embedded in the shaft rod (212), the rotating frame 1 (232) is fixedly installed on the outside of the T-shaped base (211), and the rotating frame 2 (233) is fixedly installed on the outside of the placement frame body (221).

2. The cardan shaft replacement device for an EMU according to claim 1, characterized in that: A rubber pad is also provided on the upper side of the placement rack body (221).

3. The cardan shaft replacement device for an EMU according to claim 1, characterized in that: The placement rack body (221) is also provided with an adjustable strap (223).

4. The cardan shaft replacement device for an EMU according to claim 1, characterized in that: The movable frame assembly (11) comprises a U-shaped frame (111), the bottom of the U-shaped frame (111) is fixedly connected to a plurality of movable wheels (112), the upper side of the U-shaped frame (111) is also fixedly connected to a supporting vertical frame (113), and the upper side of the supporting vertical frame (113) is also fixedly connected to a handle (114).

5. The cardan shaft replacement device for an EMU as claimed in claim 4, characterized in that: The support frame assembly (12) comprises a connecting rod (121), one side of which is rotatably connected to a group of support frame bodies (122), and the outer side of the connecting rod (121) is also fixedly connected to a guide sleeve (123).

6. The cardan shaft replacement device for an EMU as claimed in claim 5, characterized in that: The guide sleeve (123) is slidably embedded in the supporting vertical frame (113), the bottom of the jack (13) is fixedly mounted on the U-shaped frame (111), and the upper end of the jack (13) is fixedly connected to the bottom of the connecting rod (121); The T-shaped base (211) is limitedly embedded in a set of support frame bodies (122).

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