CN116395597A

CN116395597A - Lifting tool for magnetic levitation train

Info

Publication number: CN116395597A
Application number: CN202310401937.9A
Authority: CN
Inventors: 王剑博; 陈平; 柳磊尧; 张休巍
Original assignee: CRRC Changchun Railway Vehicles Co Ltd
Current assignee: CRRC Changchun Railway Vehicles Co Ltd
Priority date: 2023-04-14
Filing date: 2023-04-14
Publication date: 2023-07-07

Abstract

The invention discloses a lifting tool for a maglev train, which comprises a base, a lifting device and a supporting seat, wherein the lifting device is arranged on the base; the supporting seat is connected with the lifting device, the lifting device is used for driving the supporting seat to ascend and descend, and the supporting seat is used for being matched with the upper body of the maglev train to support the upper body of the maglev train. In the practical application of the magnetic levitation train manufacturing, when the interlayer is lifted to the static suspension table or the track and then pushed into the tool, the base is used for being supported on the ground, the height of the supporting seat is adjusted through the lifting device, the upper body is dropped onto the supporting seat by using the lifting appliance, the lifting appliance is withdrawn after the upper body is supported by the tool, the height of the supporting seat is adjusted through the lifting mechanism until the upper body completely falls onto the interlayer, and the upper body falling construction is completed. When the upper body and the interlayer are required to be disassembled in later maintenance, the upper body is lifted by using the tool, and the upper body can be lifted away after the lifting appliance is installed, so that the disassembly work is completed. The lifting tool for the maglev train is convenient to operate and high in safety.

Description

Lifting tool for magnetic levitation train

Technical Field

The invention relates to the technical field of magnetic levitation trains, in particular to a lifting tool of a magnetic levitation train.

Background

The high-speed magnetic levitation vehicle is composed of an upper body (including a vehicle body structure, equipment mounted on the upper body, an inner mounting seat, a door window and the like), an interlayer (including interlayer wiring, equipment mounted on an ASG chassis, a chassis backboard and the like) and the like.

When the magnetic levitation train is manufactured, the production of the upper body and the interlayer and the assembly of parts are respectively completed on the bench, the interlayer is required to be lifted to a static suspension bench or a track firstly during the whole train synthesis, then the upper body is lifted to the interlayer, and the upper body and the interlayer are required to be decomposed during the later maintenance.

In the prior art, the electric car lifting jack is matched with the supporting seat to carry out falling and decomposing work of the upper body and the sandwich structure, and the electric car lifting jack has the problems of difficult carrying and installation and the like because of heavy weight, can not conveniently adjust the position, ensures the falling precision and is extremely easy to cause car body damage due to dislocation of the car lifting jack. At most, 6 trolley machines can be synchronously controlled in China at present, only 3 trolley machines can be arranged on one side, the span is large, and the bending deformation of a trolley body is easy to cause.

Because the electric car lifting jack has no fine adjustment structure in the height direction, the supporting seats on the car lifting jacks cannot be guaranteed to be in a completely horizontal state, the upper body is easy to incline and uneven when falling onto the car lifting jack, and potential safety hazards exist. The electric car lifting jack does not have closed-loop control in the falling and rising processes, and the height difference easily occurs among the car lifting jacks, so that the falling precision is affected.

Therefore, how to design a lifting tool for a maglev train solves the problems of difficult transportation, difficult installation, poor falling precision, potential safety hazards and the like existing in the process of lifting an upper body during the processing and the manufacturing of the maglev train and the later maintenance of the maglev train, and is a technical problem to be solved by the current technicians in the field.

Disclosure of Invention

In view of the above, the invention aims to provide a lifting tool for a maglev train, which solves the problems of difficult transportation and installation, poor falling precision, potential safety hazard and the like existing in the process of lifting an upper body during the processing and the manufacturing of the maglev train and the later maintenance of the maglev train.

In order to achieve the above object, the present invention provides the following technical solutions:

a maglev train landing gear comprising:

a base;

the lifting device is arranged on the base;

the supporting seat is connected with the lifting device, the lifting device is used for driving the supporting seat to ascend and descend, and the supporting seat is used for being matched with an upper body of the magnetic levitation train to support the upper body of the magnetic levitation train.

Optionally, in the above-mentioned maglev train lifting tool, the lifting device includes:

the lifting device includes:

the screw is rotationally connected with the base, and a rotating mechanism for driving the screw to rotate is sleeved on the screw;

the main support column is provided with a nut, the main support column is sleeved on the screw rod, and the nut is in threaded fit with the screw rod; the supporting seat is arranged on the main supporting column.

Optionally, in the above-mentioned maglev train lifting and landing tool, the rotating mechanism includes:

the rotating mechanism comprises:

the screw is rotationally connected with the base through the gear box;

the first gear is fixed to the screw rod and is arranged in the gear box;

the second gear is meshed with the first gear, a rotating shaft is connected to the axis of the second gear, the rotating shaft is connected with the gear box in a rotating mode, and the rotating shaft extends out of one end of the gear box to form a power input end.

Optionally, in the above-mentioned maglev train lifting and landing tool, the power input end is connected with a manual wrench or a driving motor.

Optionally, in the above-mentioned maglev train lifting tooling, the lifting tooling further comprises a middle sleeve sleeved on the main support column and fixedly connected with the gear box, wherein the middle sleeve is provided with a limiting piece to limit the displacement range of the main support column.

Optionally, in the above-mentioned maglev train lifting tool, a guide groove is axially provided on the main support column, and an anti-rotation key is provided on the middle sleeve, and the anti-rotation key is in sliding fit with the guide groove so as to limit rotation of the main support column.

Optionally, in the above-mentioned maglev train lifting and landing tool, the base includes:

the gear box is fixed on the base body;

the travelling wheel is arranged on the base body and is provided with a locking device;

the base support assembly is at least two, is arranged on the base body at intervals, and can be lifted.

Optionally, in the above-mentioned maglev train landing gear, the base support assembly includes:

the base body is provided with a screw sleeve, and the support screw rod is in threaded fit with the screw sleeve;

the support disc is sleeved at the lower end of the support screw rod and used for being supported on the ground.

Optionally, in the above-mentioned maglev train landing gear, the supporting seat includes:

the supporting seat body is provided with a clamping block which is matched with the upper body sliding chute of the magnetic levitation train in a mounting way;

the supporting seat body is connected with the lifting device through the connecting component.

Optionally, in the above-mentioned maglev train landing gear, the coupling assembling includes:

the flange plate is fixedly connected with the supporting seat body;

the transition seat, the center of ring flange is fixed with the axle, the axle pass through the bearing with the transition seat rotates to be connected, the transition seat with main tributary strut fixed connection.

Optionally, in the above-mentioned maglev train lifting and falling tool, a moving handle is arranged on the middle sleeve, and a protective sleeve is sleeved on the moving handle.

Optionally, in the lifting tool of the maglev train, the supporting seat is provided with a scale.

In the practical application of manufacturing the maglev train, when the interlayer is lifted onto the static suspension table or the track and then pushed into the tool, the base is used for supporting the upper body on the ground, the lifting device is used for adjusting the height of the supporting seat, the lifting device is used for lifting the upper body onto the supporting seat, the lifting device is removed after the upper body is supported by the tool, and the lifting device is used for adjusting the height of the supporting seat until the upper body completely falls onto the interlayer, so that the upper body falls into construction. When the upper body and the interlayer are required to be disassembled in later maintenance, the upper body is lifted by using the tool, and the upper body can be lifted away after the lifting appliance is installed, so that the disassembly work is completed. The lifting tool for the maglev train is convenient to operate and high in safety.

Drawings

In order to more clearly illustrate the embodiments of the invention or the technical solutions in the prior art, the drawings that are required in the embodiments or the description of the prior art will be briefly described, it being obvious that the drawings in the following description are only some embodiments of the invention, and that other drawings may be obtained according to these drawings without inventive effort for a person skilled in the art.

Fig. 1 is a schematic diagram of the overall structure of a lifting tool for a maglev train, which is disclosed by the embodiment of the invention;

fig. 2 is a schematic diagram of a component composition structure of a base of a lifting tool for a maglev train, which is disclosed in the embodiment of the invention;

fig. 3 is a schematic structural diagram of a base body of a lifting tool for a maglev train according to an embodiment of the invention;

fig. 4 is a schematic diagram of a component composition structure of a lifting tool for a maglev train according to an embodiment of the present invention;

fig. 5 is a schematic diagram II of a component composition structure of a lifting tool of a maglev train, which is disclosed in the embodiment of the invention;

fig. 6 is a schematic diagram III of a component composition structure of a lifting tool of a maglev train, which is disclosed in the embodiment of the invention;

fig. 7 is a schematic diagram of an assembly relationship of a lifting structure of a lifting tool of a maglev train according to an embodiment of the invention;

fig. 8 is a schematic structural diagram of a support base of a lifting tool for a maglev train according to an embodiment of the invention.

The meaning of the individual reference numerals in fig. 1 to 8 is as follows:

100 is a base, 101 is a base body, 102 is a travelling wheel, 103 is a base supporting component, 1031 is a supporting screw rod, 1032 is a supporting disc, 1033 is a clamp spring, 1034 is a protection pad, and 104 is a nylon bushing;

200 is a lifting device, 201 is a screw, 202 is a gear box, 203 is a first gear, 204 is a second gear, 205 is a key, 206 is a manual wrench, 207 is a connecting bearing, 208 is an outer clamping spring, 209 is a first bushing, 210 is a fixing piece, 211 is an end buckle closure, 212 is a screw, 213 is a main supporting column, 214 is a nut, 215 is an inner clamping spring, 216 is a middle sleeve, 217 is a protective sleeve, 218 is a dust ring, 219 is an anti-rotation key, and 220 is a fixing screw;

300 is a supporting seat, 301 is a supporting seat body, 302 is a flange plate, 303 is a bearing, 304 is a second bushing, 305 is a transition seat, 306 is a gasket, 307 is a fixing piece, and 308 is a scale.

Detailed Description

The invention aims to provide a lifting tool for solving the problems of difficult transportation and installation, poor falling precision, potential safety hazard and the like existing in the process of using an electric trolley lifting machine in the process of lifting an upper body during the processing and the manufacturing of a maglev train and the later maintenance.

The following description of the embodiments of the present invention will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present invention, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the invention without making any inventive effort, are intended to be within the scope of the invention.

As shown in fig. 1, the embodiment of the invention discloses a lifting tool for a maglev train, which comprises a base 100, a lifting device 200 and a supporting seat 300.

Wherein, the base 100 plays a supporting role, the lifting device 200 is arranged on the base 100, the supporting seat 300 is connected with the lifting device 200, and the lifting device 200 is used for driving the supporting seat 300 to rise and fall. As will be appreciated by those skilled in the art, there are various types of lifting device 200, such as a driving cylinder, which can drive the support base 300 through a piston rod, so that the support base 300 is lifted and lowered; or the supporting seat 300 is driven to ascend and descend by adopting a mode of driving the screw rod mechanism by the driving motor; or a mode of matching a gear with a rack is adopted; so long as the driving support base 300 can be lifted and lowered.

The high-speed magnetic levitation vehicle is composed of an upper body (including a vehicle body structure, an interior, a seat, a door and window, and other devices mounted thereon), an interlayer (including interlayer wiring, an ASG chassis, a chassis back plate, and other devices mounted thereon), and other components.

When the magnetic levitation train is manufactured, the production of the upper body and the interlayer and the assembly of parts are respectively completed on the bench, the interlayer is required to be hoisted to the static suspension bench in the whole car synthesis process, then the upper body of the vehicle is hoisted to the interlayer, and the falling construction of the upper body can be completed by completely falling the upper body to the interlayer. The support base 300 is installed in cooperation with the upper body of the maglev train to support the upper body of the maglev train.

Pushing the tool after the interlayer is lifted to the static suspension table or the track, lifting the supporting seat 300 through the lifting device 200, falling the upper body onto the supporting seat 300 by using the lifting tool, realizing that the lifting tool is withdrawn after the upper body is supported by the tool, and lowering the supporting seat 300 through the lifting device 200 until the upper body completely falls onto the interlayer, so that falling construction of the upper body of the maglev train is completed. When the upper body and the interlayer are required to be disassembled in later maintenance, the upper body is lifted by using the tool, and the upper body can be lifted away after the lifting appliance is installed, so that the disassembly work is completed. The magnetic levitation train lifting tool disclosed by the embodiment of the invention is convenient to operate and high in safety, and solves the problems of difficulty in moving an electric car lifting machine, low safety and the like. The magnetic levitation train lifting tool disclosed by the embodiment of the invention can be used in multiple sets simultaneously, and solves the problems that six trolley machines (three trolley machines on one side) can be synchronously controlled at most, the span between the trolley machines is large, and the bending deformation of a train body is easy to cause.

In an embodiment of the present invention, as shown in fig. 3, the elevation device 200 includes a screw 201 and a main support column 213. The lower end of the screw 201 is rotatably connected with the base 100, and for convenience of rotating the screw 201, a rotating mechanism is sleeved on the screw 201 and is used for driving the screw 201 to rotate.

The main support column 213 is provided with a nut 214, the main support column 213 is sleeved on the screw 201, the nut 214 is in threaded fit with the screw 201, and the support base 300 is arranged on the main support column 213. The screw 201 is rotated by the rotating mechanism, and the nut 214 moves along the axial direction of the screw 201, so that the main support column 213 is driven to move along the axial direction of the screw 201, the rotating motion of the screw 201 is converted into the linear motion of the main support column 213, and the supporting seat 300 is driven to ascend and descend. In one embodiment, the main support post 213 is provided with a keyway in which the nut 214 is fixedly disposed, and to further secure the nut 214, an internal clamp spring 215 is used for securing. It will be appreciated by those skilled in the art that the nut 214 may also be secured to the main support column 213 by means of a welded connection.

As shown in fig. 4 and 7, in an embodiment of the present invention, the rotation mechanism includes a gear box 202, a first gear 203, and a second gear 204. Wherein, screw 201 is connected with base 100 rotation through gear box 202, and first gear 203 sets up in gear box 202, screw 201 and first gear 203 fixed connection. Specifically, a key groove is formed in the screw 201, and the screw 201 and the first gear 203 are fixedly connected through a key 205, so that synchronous rotation of the screw 201 and the first gear 203 is ensured. To further fix the screw 201 and the first gear 203, the lower end of the screw 201 is fixed using an outer clip spring 208. In order to enable the screw 201 to be in running fit with the gear box 202, a boss is arranged below the first gear 203 and connected with the connecting bearing 207, the screw 201 is in running fit with the connecting bearing 207, and the connecting bearing 207 is fixed in the gear box 202. In one embodiment, the connection bearing 207 is a thrust ball bearing.

The second gear 204 is meshed with the first gear 203, a rotating shaft is connected to the shaft center of the second gear 204, the rotating shaft is connected with the gear box 202 in a rotating mode, and one end of the rotating shaft, which extends outwards, forms a power input end of the gear box 202.

On the basis of the above embodiment, the power input end is connected with a manual wrench 206 or a driving motor. A manual wrench 206 is illustrated in fig. 4 and 7. When the height of the support base 300 needs to be adjusted, the manual wrench 206 is rotated, and the second gear 204 rotates, so that the first gear 203 and the screw 201 are driven to rotate synchronously, and the support base 300 is lifted and lowered. The arrangement of the manual wrench 206 can enable the main support column 213 to be lifted manually and quickly in a labor-saving manner.

In an embodiment of the present invention, as shown in fig. 4, a shaft sleeve is disposed at a side portion of the gear case 202, and a rotating shaft connected to the second gear 204 is engaged with the shaft sleeve, and a first bushing 209 is disposed in the shaft sleeve in order to reduce friction and noise caused by rotation of the second gear 204. Specifically, the first bushing 209 is passed through the sleeve, and the first bushing 209 is fixed using the fixing member 210. The fixing member 210 may be a retainer ring, and the specific number of the first bushings 209 is specifically set according to the actual situation.

To facilitate connection of the manual wrench 206 to the second gear 204, in one embodiment, the end of the shaft to which the second gear 204 is connected has a hexagonal surface, and the manual wrench 206 mates with the hexagonal surface. To secure the manual wrench 206 to the second gear 204, the manual wrench 206 is secured by an end cap 211 and a screw 212, which may be a countersunk screw.

In order to provide limiting and guiding functions for the main support column 213, the lift tooling for the maglev train disclosed by the embodiment of the invention further comprises a middle sleeve 216 sleeved on the main support column 213 and fixedly connected with the gear box 202. A stopper is provided on the middle sleeve 216 to limit the displacement range of the main support column 213. When the adjustment support base 300 is required to be lifted, the rotation mechanism is rotated in the first direction, and the screw 201 is rotated in the first direction, so as to drive the main support column 213 to lift. To prevent the main support column 213 from being separated from the middle sleeve 216 when the main support column 213 is raised to the maximum height, a stopper provided on the middle sleeve 216 may restrict the main support column 213 from being further raised. In a specific embodiment, a boss is provided at the lower end of the main support column 213, a boss limiting portion is provided at the top of the middle sleeve 216, and when the main support column 213 rises to the maximum height, the boss and the boss limiting portion are blocked to limit the displacement range of the main support column 213.

As shown in fig. 5 and 6, in order to prevent the main support column 213 from rotating, the lift car tooling of the maglev train disclosed in the embodiment of the invention, a guide groove is axially provided on the main support column 213, and an anti-rotation key 219 is provided on the middle sleeve 216, and the anti-rotation key 219 cooperates with the guide groove to limit the rotation of the main support column 213. Specifically, the anti-rotation key 219 may be fixed by a set screw 220. The anti-rotation key 219 converts the rotation motion of the screw 201 into the lifting motion of the main support column 213, preventing the main support column 213 from rotating after the support base 300 is stressed.

As shown in fig. 2 and 3, in an embodiment of the present invention, the base 100 includes a base body 101, a traveling wheel 102, and a base support assembly 103. The gear box 202 is fixed to the base body 101, specifically, a nylon bushing 104 is provided on the base body 101, the lower end of the screw 201 is matched with the nylon bushing 104, and the nylon bushing 104 provides limiting and guiding functions for the lifting device 200.

The travelling wheels 102 are arranged on the base body 101, locking devices are arranged on the travelling wheels 102, the number of the base support assemblies 103 is at least two, the travelling wheels are arranged on the base body 101 at intervals, and the base support assemblies 103 can be lifted. The traveling wheel 102 is arranged to facilitate movement of the tool, and when in use, the locking device is opened and pushed to the working position. When the travelling wheel 102 is required to be stored and fixed, the travelling wheel 102 is locked through the locking device, the tool is prevented from being unstable to fix, and the base support assembly 103 is adjusted, so that the base support assembly 103 is supported on the ground. The setting of base supporting component 103 has guaranteed the fixed fastness and the stability of frock, when the ground slope is uneven, can guarantee elevating gear 200's vertical state through adjusting base supporting component 103's height, avoids walking wheel 102 to cause the damage because of the atress is too big when using. In fig. 2, the number of the traveling wheels 102 and the base support assembly 103 is three.

As shown in fig. 2, in one embodiment of the present invention, the base support assembly 103 includes a support screw 1031 and a support disk 1032. Specifically, the base body 101 is provided with a screw sleeve, and the supporting screw 1031 is in threaded engagement with the screw sleeve. In order to facilitate the rotation of the support screw 1031, the support screw 1031 is provided with a handle. In order to increase the contact area with the ground, the lower end of the support screw 1031 is sleeved with a support disc 1032, and in order to fix the support disc 1032 with the support screw 1031 firmly, the support disc 1032 is fixed by a clamp spring 1033.

Specifically, the support disc 1032 may be made of metal. To prevent the support disk 1032 from scratching the ground, in one embodiment, the lower end of the support disk 1032 is bonded with a guard pad 1034, which may be a nylon pad. When the tooling needs to be moved, the handle supporting the screw 1031 is rotated so that the supporting disc 1032 is disengaged from the ground and moved by the road wheels 102. When the fixture needs to be fixed and stored, the traveling wheel 102 is locked by the locking device, and the handle of the supporting screw 1031 is rotated, so that the supporting disc 1032 is supported on the ground. When the ground is inclined and uneven, correction can be performed by adjusting the respective support screws 1031, ensuring the vertical state of the elevating device 200.

As shown in fig. 8, in an embodiment of the present invention, the support base 300 includes a support base body 301 and a connection assembly. It should be noted that, the upper body of the maglev train is provided with a chute, the top side of the supporting seat body 301 is provided with a clamping block, which can be matched with the chute to realize automatic centering, and the matching of the supporting seat body 301 and the chute ensures the falling precision of the upper body. The support base 300 may be welded from a steel plate and a steel pipe. The supporting seat body 301 is connected with the lifting device 200 through a connecting component, and the lifting device 200 is adjusted, so that the supporting seat body 301 is driven to ascend and descend.

Based on the above embodiment, the connection assembly includes a flange 302 and a transition seat 305. The flange 302 is fixedly connected with the supporting seat body 301, and the flange 302 can be formed by welding a steel plate and a steel pipe. The center of the flange 302 is fixed with a shaft, and the shaft is rotatably connected with the transition seat 305 through a bearing 303, so as to drive the supporting seat body 301 to rotate.

In order to ensure that the flange plate 302 and the transition seat 305 are well matched, friction and noise during rotation are reduced, the transition seat 305 is internally provided with a second bushing 304, and the shaft is matched with the second bushing 304, so that friction and noise during rotation can be reduced. To fix the second bushing 304, the lower end of the bushing 304 is fixed using a spacer 306 and a fixing member 307. The transition seat 305 is fixedly coupled to the main support leg 213. In one embodiment, the top of the main support column 213 is provided with mounting holes, and the lower end of the transition seat 305 is inserted into the main support column 213 and fastened by fasteners.

In order to facilitate the tool moving, in an embodiment of the present invention, a moving handle is disposed on the middle sleeve 216, and in order to increase the friction force of an operator holding the moving handle, a protecting sleeve 217 is sleeved on the moving handle, where the protecting sleeve 217 may be made of rubber or other materials. To prevent dust from entering the middle sleeve 216, the top of the middle sleeve 216 is provided with a dust collar 218.

In order to avoid deformation of a vehicle body caused by different lifting sizes of a plurality of sets of tools, the embodiment of the invention discloses a lifting tool for a maglev train, and a scale 308 is arranged on a supporting seat 300. The setting of scale 308 can unify the lift size of many sets of frock, avoids rising, and each frock height of decline process is inconsistent and leads to the fact the automobile body to warp.

It should be noted that, in the present specification, each embodiment is described in a progressive manner, and each embodiment is mainly described as different from other embodiments, and identical and similar parts between the embodiments are all enough to be referred to each other.

As used in this application and in the claims, the terms "a," "an," "the," and/or "the" are not specific to the singular, but may include the plural, unless the context clearly dictates otherwise. In general, the terms "comprises" and "comprising" merely indicate that the steps and elements are explicitly identified, and they do not constitute an exclusive list, as other steps or elements may be included in a method or apparatus. The inclusion of an element defined by the phrase "comprising one … …" does not exclude the presence of additional identical elements in a process, method, article, or apparatus that comprises an element.

The terms "first" and "second" are used below for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defining "a first" or "a second" may explicitly or implicitly include one or more such feature.

The principles and embodiments of the present invention have been described herein with reference to specific examples, the description of which is intended only to facilitate an understanding of the core concepts of the invention. It should be noted that it will be apparent to those skilled in the art that various modifications and adaptations of the invention can be made without departing from the principles of the invention and these modifications and adaptations are intended to be within the scope of the invention as defined in the following claims.

Claims

1. The utility model provides a maglev train frock of landing, its characterized in that includes:

a base (100);

a lifting device (200), wherein the lifting device (200) is arranged on the base (100);

the supporting seat (300), supporting seat (300) with elevating gear (200) link to each other, elevating gear (200) are used for the drive supporting seat (300) rise and descend, supporting seat (300) are used for installing with the upper body cooperation of maglev train, in order to support the upper body of maglev train.

2. The maglev train landing gear set of claim 1, wherein the lifting device (200) comprises:

the screw (201), the screw (201) is rotationally connected with the base (100), and a rotating mechanism for driving the screw (201) to rotate is sleeved on the screw (201);

the main support column (213), the main support column (213) is provided with a nut (214), the main support column (213) is sleeved on the screw (201), and the nut (214) is in threaded fit with the screw (201); the support base (300) is arranged on the main support column (213).

3. The maglev train landing gear set of claim 2, wherein the rotating mechanism comprises:

a gear box (202), wherein the screw (201) is rotationally connected with the base (100) through the gear box (202);

a first gear (203), the first gear (203) being fixed to the screw (201) and being provided in the gear box (202);

the second gear (204), second gear (204) with first gear (203) meshing is connected, the axle center department of second gear (204) is connected with the pivot, the pivot with gear box (202) rotates to be connected, just the pivot overhang in the one end of gear box (202) forms the power input.

4. A maglev train landing gear as claimed in claim 3, wherein the power input is connected to a manual wrench (206) or drive motor.

5. A maglev train lifting tool as claimed in claim 3, further comprising a middle sleeve (216) sleeved on the main support column (213) and fixedly connected with the gear box (202), wherein a limiting member is arranged on the middle sleeve (216) to limit the displacement range of the main support column (213).

6. The maglev train-lifting tool as recited in claim 5, wherein the main support column (213) is provided with a guide groove along an axial direction, the middle sleeve (216) is provided with an anti-rotation key (219), and the anti-rotation key (219) is slidably engaged with the guide groove to limit rotation of the main support column (213).

7. A maglev train landing gear as in claim 3, wherein the base (100) comprises:

a base body (101), the gear box (202) being fixed to the base body (101);

the travelling wheel (102) is arranged on the base body (101), and a locking device is arranged on the travelling wheel (102);

the base support assemblies (103) are at least two and are arranged on the base body (101) at intervals, and the base support assemblies (103) can be lifted.

8. The maglev train landing gear assembly of claim 7, wherein the base support assembly (103) comprises:

the support screw rod (1031) is provided with a screw sleeve on the base body (101), and the support screw rod (1031) is in threaded fit with the screw sleeve;

and the support disc (1032) is sleeved at the lower end of the support screw rod (1031) and used for being supported on the ground.

9. The maglev train landing gear set of claim 2, wherein the support base (300) comprises:

the supporting seat body (301) is provided with a clamping block which is matched with the upper body sliding chute of the magnetic levitation train in a mounting way;

the supporting seat body (301) is connected with the lifting device (200) through the connecting assembly.

10. The maglev train landing gear assembly of claim 9, wherein the connection assembly comprises:

the flange plate (302), the flange plate (302) is fixedly connected with the supporting seat body (301);

the transition seat (305), the center of ring flange (302) is fixed with the axle, the axle pass through bearing (303) with transition seat (305) swivelling joint, transition seat (305) with main support post (213) fixed connection.

11. The maglev train landing gear assembly of claim 5, wherein the middle sleeve (216) is provided with a movable handle, and wherein the movable handle is sleeved with a protective sleeve (217).

12. The lift fixture for a maglev train according to any one of claims 1-11, wherein a scale (308) is provided on the support base (300).