CN211308543U

CN211308543U - Magnetic suspension train traction maintenance engineering vehicle

Info

Publication number: CN211308543U
Application number: CN201922109680.1U
Authority: CN
Inventors: 赵世永
Original assignee: Dalian Tiefeng Traffic Equipment Co ltd
Current assignee: Dalian Tiefeng Traffic Equipment Co ltd
Priority date: 2019-11-30
Filing date: 2019-11-30
Publication date: 2020-08-21
Anticipated expiration: 2029-11-30

Abstract

The utility model relates to a maglev train traction maintenance engineering vehicle, which comprises a vehicle body, the triaxial electric bogie that contains F direction function, storage battery electrical control device, but automatic rising's conductor rail maintenance hanging flower basket and traction even hanging device, but at least, install two sets of triaxial electric bogies that adopt the towing pin, the card key is connected in the automobile body lower part, triaxial electric bogie installs three sets of motor drive's running gear at least, four guider that contain the direction wheelset are installed to running gear's wheel and bogie symmetry, roll, the direction is gone on the upper rail surface non-induction board position of F type guide rail and both sides F rail; at least two sides of the vehicle body are symmetrically provided with four lifting contact rail maintenance hanging baskets; the vehicle is suitable for the operation of magnetic suspension vehicle sections, comprehensive bases and lines, undertakes the traction and rescue of magnetic suspension trains, the regular inspection of tracks/contact rails, the overhaul and replacement of parts, and assists the transportation of workers and materials, the dust removal and snow removal under special weather conditions and the like.

Description

Magnetic suspension train traction maintenance engineering vehicle

Technical Field

The utility model relates to a novel maglev train pulls and maintains machineshop car, it belongs to engineering construction equipment's technical field.

Background

The conventional RTT series train traction device (Chinese national patent, patent number: ZL 200920011206.9) meets the use requirements of traction shunting operation of Chinese high-speed motor cars, subway vehicles, city-scale vehicles, inter-city motor cars, high-power locomotives and the like, can only run on standard rails except for running on the road, and along with the development and maturity of a magnetic levitation technology, when a magnetic levitation train is in traction, the vehicle is in a suspension state, wheels are not in contact with an F-shaped guide rail row, and the conventional RTT series train traction device is limited by a rail structure and cannot meet the requirements of magnetic levitation train traction and line maintenance operation.

With the rapid development of the magnetic suspension train, although the existing magnetic suspension train traction maintenance engineering vehicle can meet the maintenance requirement of the magnetic suspension line, the existing magnetic suspension train traction maintenance engineering vehicle is provided with an electric lifting appliance, a contact rail maintenance hanging basket and other equipment to facilitate maintenance and construction, but can realize automatic lifting, folding and releasing functions for the maintenance hanging basket, and is still in a limited range for the existing magnetic suspension train traction maintenance engineering vehicle.

Disclosure of Invention

In order to solve the problem, the utility model provides a pair of maglev train pulls and maintains machineshop car, its purpose: 1. the rescue traction power is provided for the condition that the medium-low speed maglev train fails and cannot run autonomously; 2. the three-axis electric bogie with the F-rail guiding function can stably and safely run on the magnetic suspension rail; 3. the reliable coupling and the reliable decoupling of the train traction device and the medium-low speed magnetic suspension train are ensured by using the traction coupling device; 4. the engineering truck is provided with an electric lifting appliance, an F-shaped guide rail surface snow sweeping and automatically lifting contact rail maintenance hanging basket construction maintenance device.

The utility model provides a technical scheme that its technical problem adopted is: the novel magnetic suspension train traction maintenance engineering vehicle comprises a vehicle body, a three-axis electric bogie with an F rail guide function, a storage battery pack, an electric appliance control device and a traction coupling device; the lower part of the vehicle body is provided with two three-axis electric bogies which have F rail guide function and are connected by adopting a traction pin and a clamping key, the three-axis electric bogies are at least provided with three sets of motor-driven traveling devices at equal axial distance from the front to the back, wheels of the traveling devices and four guide devices of the bogies roll and guide to travel on the F rails on the positions of non-induction plates on the upper rail surface of the F-shaped guide rail and the two sides of the F rails, the motor-driven traveling devices consist of a motor, a universal coupling and a special axle, and the motor mounting frame and the special axle are connected to the three-axis electric bogies by bolts; at least two sides of the vehicle body are symmetrically provided with four liftable hanging baskets for maintaining the contact rails; the middle part of the vehicle body is provided with an equipment room, and the equipment room comprises an air compressor, a generator set and a hydraulic system; two cabs are arranged at the front end and the rear end of the vehicle body; two folding arm electric lifting appliances are arranged behind the cab; at least two sets of electric appliance control devices are arranged in the cab; at least two traction coupling devices are arranged at the front end and the rear end of the vehicle body, and the traction coupling devices are provided with compressed air interfaces for the traction coupling vehicles, so that the safe and reliable coupling and decoupling of the traction coupling vehicles are ensured.

Two sides of a traction pin of the bogie are provided with secondary shock absorbers which bear the vertical load and the shock absorption function of the whole vehicle; the engineering vehicle body is connected with the three-axis electric bogie by a bogie traction pin, a traction pin flange is connected with a bogie bolt, the traction pin is axially arranged in a vehicle body traction pin copper sleeve sliding bearing, and the traction pin is radially limited and connected with the end surface of the vehicle body traction pin copper sleeve through a traction pin clamping key; the traction pin clamping key is fixed on the traction pin through a clamping key sleeve and a bolt; the three-axis electric bogie at the front end and the rear end of the vehicle body is provided with a barrier remover and a snow blowing nozzle pipe.

The traction coupling device is arranged at the front end and the rear end of the train traction device, and ensures reliable coupling with the magnetic suspension train. The traction coupling device has the functions of height adjustment, automatic coupling and automatic uncoupling or manual uncoupling.

The busbar maintenance basket of liftable includes: the hanging basket comprises a hanging basket fixing frame, a pull rod, a mounting plate, a fixing pin shaft, a hanging basket frame, a hanging frame, a movable bottom fan, a connecting rod and a movable fan; the hanging basket fixing frame is a guide rail used when the hanging basket frame goes up and down, lifting oil cylinders are arranged on two sides of the hanging basket fixing frame, the hanging basket fixing frame is connected with a vehicle body through a pull rod and a mounting plate through bolts, and the hanging basket frame, the movable bottom fan, the connecting rod, the movable fan and the lifting oil cylinders are connected through hinge pins.

Lifting oil cylinders arranged on two sides of the hanging basket fixing frame provide power for lifting, folding and releasing the hanging basket frame; when the hanging basket frame is lifted, a four-bar linkage mechanism consisting of the hanging basket frame, the movable fan, the connecting rod and the movable bottom fan is folded and released according to a specified position.

The hanging basket frame rises and is folded to a specified station, and the hanging rack of the hanging basket frame and the vehicle body fixing hole are inserted with the fixing pin shaft, so that the safe fixation of the hanging basket frame is realized. The fixed pin shaft is pulled out, the hanging basket frame descends and is released to a maintenance operation station, and an operator can enter the hanging basket frame to perform maintenance, maintenance and replacement operation on the contact rail. Based on the same inventive concept, all schemes that rely on power to cause the above-mentioned structure contact rail maintenance hanging flower basket to realize automatic rising, folding and release function including cylinder, speed reducer, hydraulic motor etc. are the utility model discloses a restricted range.

The special axle has the functions of speed change and braking controlled by hydraulic pressure;

the folding arm electric lifting appliance comprises a rear lifting arm, a front lifting arm, a stand column assembly, a winch and a pulley. The lower flange assembled by the folding arm electric lifting appliance upright post is fixedly connected to the car bodies on two sides by bolts; a worm gear pair is assembled on the upright post and pushes the rear suspension arm to rotate when the crank handle rotates the worm; the locking handle and the limiting key are used for locking the rotation of the rear suspension arm and limiting the rotation angle; the winch, the pulley and the steel wire rope hook which are arranged on the front suspension arm form a heavy object hoisting unit; the rear suspension arm and the front suspension arm of the folding arm electric lifting appliance are connected by a flange capable of rotating around a shaft; the flange circumference design has the locating pin hole, and adjustment locating pin position can adjust back davit, preceding davit contained angle and then adjustment davit length between the davit.

The electric appliance control device is controlled by a CAN bus, and a control system has a fault self-diagnosis function; the engineering truck is provided with a vehicle-mounted air conditioning system and a vehicle-mounted monitoring system. The engineering truck takes a storage battery as a power source and controls an alternating current motor to drive a walking system through an inverter system. The driving motor provides walking traction power for the three-shaft power bogie.

The utility model has the advantages that: the magnetic suspension train traction maintenance engineering vehicle can provide rescue traction power for the medium-low speed magnetic suspension train under the condition that the fault occurs and the autonomous operation cannot be realized, and the traction coupling magnetic suspension train can safely run, thereby providing mature engineering construction and traction equipment for magnetic suspension line maintenance, daily maintenance and inspection. The hydraulic braking, the electromagnetic braking, the hydraulic double-pole speed change and the electric control stepless speed regulation are adopted, and the speed regulation and the braking are more advanced, energy-saving, environment-friendly and effective. The utility model discloses a maglev train pulls maintains machineshop car adopts storage battery as the drive power supply, can provide stable power supply to can pull for maglev train and maintain the machineshop car and provide longer duration, adopt the battery as power energy noise little, can keep clean, pollution-free environment, greatly satisfy environmental protection's requirement. The utility model discloses a magnetic levitation train pulls and maintains triaxial electric bogie who contains F rail direction function of machineshop car can guarantee that the wheel of this machineshop car rolls, the direction is gone on the last rail surface non-response board position of F type guide rail and both sides F rail, ensures the train safety of traveling. The utility model discloses a two cabs around maglev train traction maintenance machineshop car disposes, moves on overpass F type guide rail, and the field of vision is wide, convenient operation is nimble. The utility model discloses a maglev train pulls and maintains the machineshop car and maintains the demand to the magnetic suspension circuit, is equipped with electric hoist, F type guide surface snow and sweeps, the key equipment of the contact rail maintenance hanging flower basket construction maintenance construction of liftable. With the rapid development of maglev trains, there are more cities that use maglev trains as urban transportation means. The utility model discloses a magnetic suspension train pulls and maintains machineshop car will have more application places.

Drawings

Fig. 1 is a three-dimensional structure diagram of a magnetic suspension train traction maintenance engineering vehicle.

Fig. 2 is a three-dimensional structural view of a three-axis electric truck having an F-rail guide function.

Fig. 3 is a left side view of a three-axle electric bogie with an F-rail guiding function placed on an F-shaped rail.

FIG. 4 is an assembly cross-sectional view of a vehicle body, a three-axis electric bogie with an F-rail guiding function and a hanging basket.

Fig. 5 is a three-dimensional structural view of the motor-driven traveling apparatus.

Figure 6 is a three-dimensional structure view of the basket assembly.

Figure 7 is a three dimensional block diagram of the basket frame.

Fig. 8 is a three-dimensional structure view of the basket roller set.

Fig. 9 is a three-dimensional configuration view of the traction coupling device.

Fig. 10 is a cross-sectional view of the hitch.

Fig. 11 is a three-dimensional structure view of the folding arm electric hanger.

Fig. 12 is a cross-sectional view of the spreader column assembly.

Fig. 13 is a top view of fig. 12.

In the figure: 1. the device comprises an F-shaped track assembly, a side track surface of a 1a type F guide rail, a lower track surface of a 1b type F guide rail, a 1c type 6b type F guide rail, a non-induction plate position of an upper track surface of a 1d type F guide rail, a guide surface induction plate of an upper track surface of a 1e type F guide rail, a guide surface induction plate of an F type F guide rail, a2 car body, a 3, a three-axle electric bogie with an F rail guide function, a 3a three-axle bogie body, a 3b, a guide device, a 3b1, a swing support seat, a 3b2, a pin shaft, a 3b3, a fixing bolt, a 3b4, a swing support body, a 3b5, a guide wheel, a 3b6, a hanging wheel provided with a composite tire, a 3c and hanging rope assembly, a 3d motor-driven walking device, a 3d1, a driving motor, a 3d2, a motor mounting frame, a 3d3, a universal coupling, a 3d4, an oil cylinder, a 3d5, wheels, a 3d6, a special-purpose vehicle axle, a, A snow blowing nozzle pipe assembly, a 3f, a bogie traction pin assembly, a 3f1, a key sleeve, a 3f2, a traction pin clamping key, a 3f3, a traction pin, a 3g, a secondary shock absorber, a 3h, an anti-dropping pin shaft, a 4, a storage battery pack, a 5, a hanging basket assembly, a 5a, a hanging basket fixing frame, a 5a1, a pull rod, a 5a2, a mounting plate, a 5b, a hanging basket frame, a 5b1, a hanging basket frame body, a 5b2, a limiting stop iron, a 5b3, a roller set, a 5b3-1, a roller seat, a 5b3-2, a bolt, a 5b3-3, a roller shaft, a 5b3-4, a side rolling bearing, a 5b3-5, a round nut, a 5b3-6, a rolling bearing, a 5b3-7, an elastic retainer ring for a shaft, a 5b3-8, a stop washer, a 5b4, a hanging rack, a 5b5, a hinge seat, a 5c, a movable pin, a movable fan, 5g, a lifting oil cylinder, 6, a traction coupling device, 6a, a coupling coupler, 6b, an adjusting screw rod, 6c, a manual uncoupling handle, 6d, an automatic uncoupling oil cylinder, 6e, an air supply valve interface, 6f, a buffer rubber spring, 6g, a screw slider, 6h, a bolt pair, 6i, a thrust bearing, 6j, a coupling device seat, 6k, a coupler adjusting device, 7, an equipment room, 8, a cab, 9, a folding arm electric lifting appliance, 9a, a rear lifting arm, 9b, a positioning pin, 9c, a front lifting arm, 9d, a stand column assembly, 9d1, a stand column, 9d2, a thrust bearing seat, 9d3, a worm gear, 9d4, a worm, 9d5, a locking handle, 9d6, a crank handle, 9d7, a limit key, 9d8, a winch, 9d9, a shaft retainer ring, 9d10, a bearing gland, 9d11, a sealing ring, a rolling bearing ring, 9e, 9f, pulleys, 9g, shafts, 9h, a rear suspension arm flange, 10 and an electric appliance control device.

Detailed Description

Fig. 1 to 13 show a construction view of a magnetic levitation vehicle traction maintenance vehicle. The three-axle electric steering frame mainly comprises a vehicle body (2), two three-axle electric steering frames (3) which are distributed front and back and have an F rail guiding function and are arranged at the lower part of the vehicle body (2) in total, a storage battery pack (4) in total, four hanging baskets (5) which are symmetrically arranged at two sides of the vehicle body (2) in total, two traction coupling devices (6) which are arranged at the front end and the rear end of the vehicle body (2) in total, an equipment room (an air compressor, a generator set and a hydraulic system) (7) which is arranged at the middle part of the vehicle body (2) in total, two driving cabs (8) which are arranged at the front end and the rear end of the vehicle body (2) in total, two folding arm electric lifting appliances (9) which are arranged at the rear side of the.

The utility model discloses a maglev train pulls and maintains machineshop car:

1) six wheels (3d5) of a three-motor-driven traveling device (3d) of a three-axis electric bogie (3) with an F-shaped rail guiding function roll on a non-induction plate position (1d) on the rail surface of an F-shaped guide rail (1c) to travel, and materials adopted by the wheels (3d5) are harmless to the F-shaped guide rail;

2) guide wheel sets (3b5) of four guide devices (3b) on the steering frame body (3a) are limited to roll on F-shaped guide surfaces (1a and 1b) on two sides of an F-shaped guide rail (1c) to ensure that the engineering truck does not deviate; the hanging wheel group (3b 6) of the guide device (3b) runs under the lower rail surface (1 b) of the F-shaped guide rail (1c) in a rolling way, so that the magnetic suspension train traction maintenance engineering vehicle is ensured not to turn on one side.

3) The traction pin copper sleeve of the vehicle body (2) is connected with the three-axis electric bogie (3) by a bogie traction pin (3f3) and a traction pin clamping key (3f 2).

4) The device is in traction coupling with a magnetic suspension train through a traction coupling device (6), the traction coupling device (6) adjusts the height of a coupling hook (6a) through a manual crank rotating lead screw pair (6b) and (6h), and the device is capable of performing manual uncoupling through a manual uncoupling pull rod (6c) and performing automatic uncoupling through an automatic uncoupling oil cylinder (6d) controlled by an electric control device (10); 5) the electric control device (10) controls a series of actions such as coupling, walking, positioning, stopping, unhooking and the like of the train traction device (6).

The structure of a three-axis electric bogie (3) with an F-rail guiding function is characterized in that a frame body (3a) of the electric bogie is provided with three motor-driven traveling devices (3d) with equal wheelbase; four guide devices (3b) are symmetrically arranged in front and back; two secondary shock absorbers (3 g) for bearing the vertical load and shock absorption function of the vehicle body (2); the engineering truck body (2) is connected with the electric bogie (3) by a bogie traction pin (3 f); the electric bogie (3) is provided with a barrier remover (3 e) and a snow blowing nozzle pipe (3 e 2) in the front and rear end directions of a vehicle body (2).

The motor-driven walking device (3d) is structurally characterized in that a motor (3d 1) is connected to a steering frame body (3a) through a motor mounting frame (3d 2) by flange bolts; a motor (3d 1) for driving the traveling gear (3d) drives two wheels (3d5) which are provided with special wheels to rotate through a universal joint (3d 3), a gearbox and a special axle (3d 6); a position detection element double-acting speed change hydraulic oil cylinder (3d4) is arranged on the gearbox and is driven by hydraulic oil to perform double-pole speed change; the special axle (3d6) connected with the hydraulic control has a hydraulic brake function.

A lifting contact rail maintenance hanging basket (5) structure is characterized in that a pull rod (5a 1) and an installation plate (5a 2) of a hanging basket fixing frame (5a) are connected with a vehicle body (2) through bolts. The hanging basket frame (5b), the movable bottom fan (5c), the connecting rod (5d), the movable fan (5e) and the lifting oil cylinder (5 g) are connected by a pin shaft hinge; the hanging basket frame (5b) is connected with four groups of guide roller sets (5b3) through bolts, the hanging basket fixing frame (5a) is a guide rail for the hanging basket frame (5b) during lifting, and lifting oil cylinders (5 g) arranged on two sides of the hanging basket fixing frame (5a) provide power for the lifting, folding and releasing of the hanging basket frame (5 b); when the hanging basket frame (5b) is lifted, a four-bar linkage mechanism consisting of the hanging basket frame (5b), the movable fan (5e), the connecting rod (5d) and the movable bottom fan (5c) is folded and released according to a specified position. The hanging basket frame (5b) rises and is folded to a specified station (figure 1 state), and a fixed pin shaft (5f) is inserted into a fixing hole of the hanging rack (5b4) of the hanging basket frame (5b) and the vehicle body (2), so that the safe fixation of the hanging basket frame (5b) is realized. The fixed pin shaft (5f) is pulled out, the hanging basket frame (5b) descends and is released to a maintenance operation station, and an operator can enter the hanging basket frame (5b) to perform maintenance, maintenance and replacement operation on the contact rail.

The structure of a traction coupling device (6) is characterized in that one end of a return spring of a connecting coupler (6a) is connected with a manual uncoupling pull rod (6c), and the other end of the return spring is connected with a coupler body; a transition roller is arranged on the piston rod head of the automatic unhooking oil cylinder (6d), the automatic unhooking oil cylinder (6d) is arranged on the coupler body, and the transition roller pushes the manual unhooking pull rod (6c) to act when the unhooking oil cylinder (6d) acts; the buffer rubber spring (6 f) is fixed on the coupler adjusting device (6 k); the front panel of the car coupler is provided with a compressed air valve (6 e). The traction coupling device (6) adjusts the height of a coupling coupler (6a) through a manual crank rotating screw rod pair (6b) and a manual crank rotating screw rod pair (6 h).

The folding arm electric lifting appliance (9) structure is characterized in that a lower flange of an upright post assembly (9d) is connected to a vehicle body (2) by bolts; the column assembly (9d) is provided with worm gear pairs (9d 3), (9d 4) which push the rear suspension arm (9a) to rotate when the crank handle (9d 6) rotates the worm (9d 4); the locking handle (9d 5) and the limiting key (9d 7) are used for locking the rotation of the rear suspension arm (9a) and limiting the rotation angle; a heavy object hoisting unit is formed by a winch (9 e) arranged on the front suspension arm (9c), a pulley (9f) and a steel wire rope hook (9 i); the rear suspension arm (9a) and the front suspension arm (9c) are connected by a flange (9h) which can rotate around a shaft (9 g); the circumference of the flange is provided with a positioning pin (9b) hole, and the position of the positioning pin (9b) can be adjusted to adjust the included angle between the rear suspension arm (9a) and the front suspension arm (9c) so as to adjust the length of the suspension arm.

Claims

1. The utility model provides a maglev train pulls and maintains machineshop car, includes automobile body, contains triaxial electric bogie, storage battery electrical apparatus controlling means, the contact rail maintenance hanging flower basket and the traction of F direction function and links a device, its characterized in that: at least two groups of three-axis electric bogies connected by traction pins and clamping keys are installed on the lower part of the vehicle body, at least three sets of running gear driven by motors are installed on the three-axis electric bogies, four guiding devices containing guiding wheel sets are symmetrically installed on wheels and the bogies of the running gear, and the running gear rolls and guides on the non-induction plate position on the upper rail surface of the F-shaped guide rail and the F rails on the two sides of the upper rail surface of the F-shaped guide rail; the two sets of secondary shock absorbers are symmetrically arranged on two sides of the traction pin; at least two sides of the vehicle body are symmetrically provided with four lifting contact rail maintenance hanging baskets; the middle part of the vehicle body is provided with an equipment room; two cabs are arranged at the front end and the rear end of the vehicle body; two folding arm electric lifting appliances are arranged behind the cab; at least two sets of electric appliance control devices are arranged in the cab; at least two traction coupling devices are arranged at the front end and the rear end of the vehicle body.

2. The maglev train traction maintenance work vehicle of claim 1, characterized in that: the lifting contact rail maintenance basket comprises: the hanging basket comprises a hanging basket fixing frame, a pull rod, a mounting plate, a fixing pin shaft, a hanging basket frame, a hanging frame, a movable bottom fan, a connecting rod and a movable fan; the hanging basket fixing frame is a guide rail used when the hanging basket frame goes up and down, lifting oil cylinders are arranged on two sides of the hanging basket fixing frame, the hanging basket fixing frame is connected with a vehicle body through a pull rod and a mounting plate through bolts, and the hanging basket frame, the movable bottom fan, the connecting rod, the movable fan and the lifting oil cylinders are connected through hinge pins.

3. The maglev train traction maintenance work vehicle of claim 2, characterized in that: lifting oil cylinders arranged on two sides of the hanging basket fixing frame provide power for lifting, folding and releasing the hanging basket frame; when the hanging basket frame is lifted, a four-bar linkage mechanism consisting of the hanging basket frame, the movable fan, the connecting rod and the movable bottom fan is folded and released according to a specified position.

4. The maglev train traction maintenance work vehicle of claim 3, characterized in that: the hanging basket frame rises and is folded to a specified station, and a hanging rack of the hanging basket frame and a vehicle body fixing hole are inserted with a fixing pin shaft.

5. The maglev train traction maintenance work vehicle of claim 1, characterized in that: the vehicle body is connected with a three-shaft power bogie traction pin, the three-shaft power bogie traction pin is axially arranged in a vehicle body traction pin copper sleeve sliding bearing, and the traction pin is radially limited and connected with the end surface of the vehicle body traction pin copper sleeve through a traction pin clamping key; the traction pin clamping key is radially fixed through the clamping key sleeve, and the clamping key sleeve is fixed on the traction pin through a bolt.

6. The maglev train traction maintenance work vehicle of claim 1, characterized in that: the three-axis electric bogie with the F-shaped guide function is provided with a barrier remover and a snow blowing nozzle pipe in the front and rear end directions of the vehicle body.

7. The maglev train traction maintenance work vehicle of claim 1, characterized in that: the two sets of secondary shock absorbers are symmetrically arranged on two sides of a bogie traction pin assembly, the shock absorbers are shock blocks, and the shock blocks are installed on the three-axis electric bogie through screws; the upper part and the lower part of the sliding block seat are sleeved with a secondary sliding block and a damping block; the secondary slide block is made of polytetrafluoroethylene material, and the upper plane of the secondary slide block is in sliding friction with the vehicle body.

8. The maglev train traction maintenance work vehicle of claim 1, characterized in that: the lower flange assembled by the folding arm electric lifting appliance upright post is connected to the vehicle body by bolts; a worm gear pair is assembled on the upright post, and the suspension arm rotates after the crank handle rotates and the worm is pushed; the locking handle and the limiting key are used for locking the rotation of the rear suspension arm and limiting the rotation angle; the winch, the pulley and the steel wire rope hook which are arranged on the front suspension arm form a heavy object hoisting unit; the rear suspension arm and the front suspension arm are connected by a flange which can rotate around a shaft; the circumference of the flange is provided with a positioning pin hole, and the position of the positioning pin is adjusted to adjust the included angle between the rear suspension arm and the front suspension arm so as to adjust the length of the suspension arm.

9. The maglev train traction maintenance work vehicle of claim 1, characterized in that: one end of the traction coupling device, which is connected with a coupler reset spring, is connected with a manual uncoupling pull rod, and the other end of the traction coupling device is connected with a coupler body; a transition roller is arranged on a piston rod head of the automatic unhooking oil cylinder, the automatic unhooking oil cylinder is arranged on the coupler body, and the transition roller pushes the manual unhooking pull rod to act when the unhooking oil cylinder acts; the buffer rubber spring is fixed on the coupler adjusting device; the front panel of the coupler is provided with an air supply valve.