CN118238713A - Multifunctional maintenance support vehicle - Google Patents

Abstract

The invention relates to a multifunctional maintenance support vehicle, which comprises a second-class chassis, an auxiliary frame, a lifting maintenance device, an oil engine power station and a tool box, wherein the auxiliary frame is fixedly arranged on the second-class chassis; the lifting maintenance device, the oil engine power station and the tool box are respectively arranged on the auxiliary frame, the lifting maintenance device can be unfolded or folded, and the oil engine power station is connected with the second-class chassis through a circuit. The lifting maintenance device has the beneficial effects that the lifting maintenance device is compact in structure and reasonable in design, the secondary chassis is modified, the auxiliary frame is additionally arranged for loading equipment, and the lifting maintenance device is used for realizing high-altitude operation and lifting operation; in addition, the power supply of the vehicle equipment and the external power supply during emergency rescue are realized through the oil engine power station; meanwhile, the tool box, the spare tire, the loaded goods, the special tools and the like can be replaced and installed at fixed positions, so that different maintenance and guarantee operations can be conveniently carried out by the maintenance and guarantee vehicle, and the device has the characteristics of high efficiency and convenience, and can greatly improve the maintenance and emergency rescue efficiency.

Description

Multifunctional maintenance support vehicle

Technical Field

The invention relates to the technical field of vehicles, in particular to a multifunctional maintenance and guarantee vehicle.

Background

The safety problems of road transportation are not negligible, such as traffic accidents, vehicle faults, etc. As the number of transport vehicles continues to increase, the frequency of vehicle failures, and the frequency of incidents, increases. Traditional single-function vehicles can not meet the requirements of modern maintenance and emergency rescue. Therefore, a multifunctional maintenance support vehicle is developed to improve maintenance and emergency rescue efficiency.

Disclosure of Invention

The invention provides a multifunctional maintenance support vehicle, which aims to solve the problems in the prior art.

The technical scheme for solving the technical problems is as follows:

The multifunctional maintenance support vehicle comprises a second-class chassis, an auxiliary frame, a lifting maintenance device, an oil engine power station and a tool box, wherein the auxiliary frame is fixedly arranged on the second-class chassis; the lifting maintenance device, the oil engine power station and the tool box are respectively installed on the auxiliary frame, the lifting maintenance device can be unfolded or folded, and the oil engine power station is connected with the two-type chassis through a circuit.

The beneficial effects of the invention are as follows: the lifting maintenance device is compact in structure and reasonable in design, the secondary frame is additionally arranged for loading equipment to reconstruct the second-class chassis, and the lifting maintenance device is used for realizing high-altitude operation and lifting operation; in addition, the power supply of the vehicle equipment and the external power supply during emergency rescue are realized through the oil engine power station; meanwhile, the tool box, the spare tire, the loaded goods and the like can be mounted at the fixed positions in a replaceable mode, so that different maintenance and guarantee operations can be conveniently carried out by the maintenance and guarantee vehicle, the novel vehicle has the characteristics of being efficient and convenient, and the maintenance and emergency rescue efficiency can be greatly improved.

On the basis of the technical scheme, the invention can be improved as follows.

Further, the lifting maintenance device comprises a hydraulic cylinder and a lifting arm, a base is rotatably arranged on the auxiliary frame, and one end of the lifting arm is rotatably connected with the base; and two ends of the hydraulic cylinder are respectively connected with the middle part of the lifting arm and the base in a rotating way.

The further scheme has the beneficial effects that when in operation, the lifting arm is driven to be overturned upwards to a set angle by the telescopic action of the hydraulic cylinder so as to facilitate the operation;

When the lifting device is not in operation, the lifting arm is driven to overturn downwards to be stored on the auxiliary frame through the expansion of the hydraulic cylinder, and the occupied space is small.

Further, a platform control box is fixedly arranged at the other end of the lifting arm, and a lifting hook is further arranged at the other end of the lifting arm.

The further scheme has the advantages of simple structure, reasonable design, convenience in operation, safety and reliability, and operators can stand in the platform control box for operation during operation; in addition, corresponding parts can be hoisted through the lifting hook so as to facilitate operation, and the operation is easy and convenient.

Further, the auxiliary frame is fixedly provided with a transportation support frame, and the transportation support frame is used for supporting and locking the lifting arm when the lifting arm is stored.

The beneficial effect of adopting above-mentioned further scheme is simple structure, reasonable in design, supports the locking lifting arm through the transportation support frame, increases the stability of lifting arm.

Further, a hydraulic supply device is further arranged on the auxiliary frame and is communicated with the hydraulic cylinder through a pipeline.

The hydraulic cylinder has the beneficial effects that in the operation process, oil is provided for the hydraulic cylinder through the hydraulic supply device, and the normal operation of the hydraulic cylinder is ensured.

Further, a plurality of pairs of hydraulic supporters are oppositely arranged on two sides of the bottom of the auxiliary frame, and the hydraulic supporters are respectively communicated with the hydraulic supply device through pipelines.

The hydraulic support device has the beneficial effects of simple structure and reasonable design, and the hydraulic supports are used for supporting and leveling the maintenance and guarantee vehicle, so that the hydraulic support device is convenient to operate.

Further, the tool box comprises at least one box body, and the box body is fixedly installed on the auxiliary frame.

The tool box has the beneficial effects that the tool box is used for accommodating various different maintenance tools, and is convenient for maintenance operation.

Furthermore, a special tool box is fixedly arranged on the auxiliary frame.

The special tool box has the beneficial effects of simple structure and reasonable design, and can accommodate some special tools, thereby facilitating special maintenance operation.

Further, a spare tire is also placed on the subframe.

The beneficial effect of adopting above-mentioned further scheme is simple structure, sets up rationally, reserves spare tyre so that change when the vehicle damages, guarantees the normal operating of vehicle.

Furthermore, an oil tank is fixedly arranged at the bottom of the auxiliary frame and is respectively communicated with the engine on the second-class chassis and the oil engine power station through pipelines.

The oil engine power station and the two-class chassis share the oil tank, so that the volume of one oil tank is saved, and the equipment integration level and loading capacity are improved; meanwhile, the problem that the oil engine is high in installation position and inconvenient to refuel is solved.

Drawings

FIG. 1 is a schematic view of the structure of the invention in the overhead operation;

FIG. 2 is a schematic view of the hoisting operation of the present invention;

FIG. 3 is a schematic view of the lifting maintenance device of the present invention;

FIG. 4 is a second schematic view of the lifting maintenance device of the present invention when being stored;

FIG. 5 is a schematic view of the structure of the second type chassis of the present invention after the sub-frame is modified;

fig. 6 is a schematic view of the present invention in conjunction with railway transportation clearance.

In the drawings, the list of components represented by the various numbers is as follows:

1. A second class chassis; 2. an auxiliary frame; 3. an oil engine power station; 4. a tool box; 5. a hydraulic cylinder; 6. a lifting arm; 7. a platform control box; 8. a transportation support; 9. a hydraulic pressure supply device; 10. a hydraulic support; 11. a special tool box; 12. a spare tire; 13. an oil tank; 14. loading goods; 15. a mounting bracket; 16. a lifting hook; 17. a get-off control box; 18. installing buried iron; 19. a hydraulic control box; 20. railway transportation restrictions.

Detailed Description

It should be noted that, without conflict, the embodiments of the present invention and features of the embodiments may be combined with each other.

In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc. indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, are merely for convenience in describing the present invention and simplifying the description, and do not indicate or imply that the devices or elements referred to must have a specific orientation, be configured and operated in a specific orientation, and thus should not be construed as limiting the present invention. Furthermore, the terms "first," "second," and the like, are used for descriptive purposes only and are not to be construed as indicating or implying a relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defining "a first", "a second", etc. may explicitly or implicitly include one or more such feature. In the description of the present invention, unless otherwise indicated, the meaning of "a plurality" is two or more.

In the description of the present invention, it should be noted that, unless explicitly specified and limited otherwise, the terms "mounted," "connected," and "connected" are to be construed broadly, and may be either fixedly connected, detachably connected, or integrally connected, for example; can be mechanically or electrically connected; can be directly connected or indirectly connected through an intermediate medium, and can be communication between two elements. The specific meaning of the above terms in the present invention can be understood by those of ordinary skill in the art in a specific case.

The invention will be described in detail below with reference to the drawings in connection with embodiments.

Example 1

As shown in fig. 1 to 6, the present embodiment provides a multifunctional maintenance support vehicle, which comprises a second type chassis 1, a subframe 2, a lifting maintenance device, an oil engine power station 3 and a tool box 4, wherein the subframe 2 is fixedly installed on the second type chassis 1; the lifting maintenance device, the oil engine power station 3 and the tool box 4 are respectively arranged on the auxiliary frame 2, the lifting maintenance device can be unfolded or folded, and the oil engine power station 3 is connected with the two-type chassis 1 through a circuit.

Preferably, in this embodiment, the loading goods 14 may also be placed on the second type chassis 1.

Preferably, in this embodiment, the oil engine power station 3 is fixedly installed at the tail of the subframe 2, and is distributed reasonably.

Based on the scheme, the front end of the auxiliary frame 2 is fixedly connected with the second-class chassis 1 through bolts.

In addition, the storage position of the lifting maintenance device does not occupy the space above the cabs of the two types of chassis, does not influence the driving visual field of a driver, meets the basic limit requirement of railway transportation, has the size matched with the railway transportation limit 20, and improves the application range of the maintenance vehicle.

The embodiment has compact structure and reasonable design, the secondary frame is additionally arranged for loading equipment to reconstruct the second-class chassis, and the lifting maintenance device is used for realizing high-altitude operation and hoisting operation; in addition, the power supply of the vehicle equipment and the external power supply during emergency rescue are realized through the oil engine power station; meanwhile, the tool box, the spare tire, the loaded goods and the like can be mounted at the fixed positions in a replaceable mode, so that different maintenance and guarantee operations can be conveniently carried out by the maintenance and guarantee vehicle, the novel vehicle has the characteristics of being efficient and convenient, and the maintenance and emergency rescue efficiency can be greatly improved.

Example 2

On the basis of embodiment 1, in this embodiment, the lifting maintenance device includes a hydraulic cylinder 5 and a lifting arm 6, a base is rotatably mounted on the subframe 2, and one end of the lifting arm 6 is rotatably connected with the base; the two ends of the hydraulic cylinder 5 are respectively connected with the middle part of the lifting arm 6 and the base in a rotating way.

During operation, the hydraulic cylinder 5 stretches and contracts and drives the lifting arm 6 to turn upwards to a set angle so as to perform the operation;

when the auxiliary frame 2 is not operated, the lifting arm 6 is driven to overturn downwards through the expansion and contraction of the hydraulic cylinder 5 until the auxiliary frame 2 is stored, and the occupied space is small.

Preferably, in this embodiment, the top of the base is provided with grooves with openings on both sides, and the lower ends of the lifting arms 6 extend into the grooves and are rotatably connected with both closed sides of the grooves through rotating shafts.

It should be noted that the hydraulic cylinder 5 adopts the prior art, and the specific structure and principle thereof will not be described herein.

Example 3

In this embodiment, the platform control box 7 is fixedly mounted at the other end of the lifting arm 6, and the lifting hook 16 is further mounted at the other end of the lifting arm 6.

The scheme has the advantages that the structure is simple, the design is reasonable, operators can stand in the platform control box 7 for operation during operation, and the operation is convenient, safe and reliable; in addition, the corresponding parts such as tools can be hoisted by the hooks 16 so as to facilitate the operation, and the operation is easy and convenient. According to the structural characteristics of the vehicle, coordinates are recorded for the fixed loading objects, and the lifting hook can be reached by one key during lifting operation, so that the operability of the equipment is improved.

Preferably, in this embodiment, the platform control box 7 is preferably a rectangular body structure, the lower end of which is closed and the upper end of which is open.

In addition, the side wall of the platform control box 7 is in a grid structure, so that materials are saved.

Based on the scheme, the lifting maintenance device has an automatic lifting function on spare tires, special tools and the like loaded on the auxiliary frame cargo bed, and the lifting hook can reach a target position through one-key operation of the control box button.

In addition, be equipped with in the platform control box 7 and control the panel, and the bottom of sub vehicle frame 2 also is provided with the control box 17 of getting off, and accessible control panel and control box 17 of getting off control respectively control maintenance elevating gear adopts two sets of control system to be the backup each other, has improved the reliability of equipment.

Example 4

In this embodiment, a transportation support 8 is fixedly mounted on the subframe 2, and the transportation support 8 is used for supporting and locking the lifting arm 6 when the lifting arm 6 is stored.

This scheme simple structure, reasonable in design supports locking lifting arm 6 through transportation support frame 8, increases lifting arm 6's stability.

Preferably, in this embodiment, the transport supporting frame 8 includes two bottom frames and two supporting frames, the two bottom frames are relatively and fixedly installed on the auxiliary frame 2, the two supporting frames are respectively rotatably installed on the two bottom frames, one ends of the two supporting frames are respectively rotatably connected with the upper ends of the two bottom frames, and the other ends of the two supporting frames are respectively connected with corresponding parts of the lifting arms 6 when being stored.

In addition, the transport support frame 8 is preferably distributed at the front end of the subframe 2.

Example 5

In this embodiment, a hydraulic pressure supply device 9 is further mounted on the subframe 2, and the hydraulic pressure supply device 9 is in communication with the hydraulic cylinder 5 through a pipe line.

In the operation process, oil is provided for the hydraulic cylinder 5 through the hydraulic supply device 9, so that the normal operation of the hydraulic cylinder 5 is ensured.

Preferably, in the present embodiment, the hydraulic pressure supply device 9 employs an oil supply tank fixedly installed at the bottom of the subframe 2; an oil pump is fixedly arranged in the oil supply tank, and an outlet of the oil pump is communicated with the hydraulic cylinder 5 through a pipeline.

In addition, a mounting bracket 15 is fixedly mounted at the bottom of the subframe 2, and the hydraulic pressure supply device 9 is mounted on the mounting bracket 15.

The hydraulic lines mentioned above are arranged on the chassis 1 of the second type and on the subframe 2.

Based on the above scheme, the hydraulic supply device 9 can supply power through power supply equipment on the two kinds of chassis 1, can also supply power through an external power supply, and can be directly connected with the external power supply when in use at the moment, and can realize switching of different power supply modes through a hydraulic control system. The power sources are mutually backed up, so that the failure of the maintenance vehicle caused by the failure of the power sources is avoided, and the reliability of the maintenance vehicle is improved. The control box is arranged under the platform, so that the personnel operation is facilitated, sealing measures are taken, the water-involved capacity is ensured, and the application range of the maintenance vehicle is improved.

In addition, the controller, the motor pump and the hydraulic valve group of the hydraulic control system are integrated in the hydraulic control box 19, the box body is integrally installed on a reserved installation support of the vehicle body, the box body is of a closed structure, the installation bolts seal glue, the external hydraulic pipeline passes through the box through the pipe fittings, the external cable is connected with the outside through the connector, and the wading capacity under the emergency rescue condition is guaranteed.

Moreover, the hydraulic pressure supply device 9 and the lifting maintenance device share the oil source, thereby reducing the equipment quantity and improving the equipment integration level and loading capacity.

Example 6

In this embodiment, on the basis of embodiment 5, a plurality of pairs of hydraulic supporters 10 are oppositely arranged on two sides of the bottom of the auxiliary frame 2, and the plurality of pairs of hydraulic supporters 10 are respectively communicated with the hydraulic supply device 9 through pipelines.

The scheme has simple structure and reasonable design, and the hydraulic support 10 is used for supporting and leveling the maintenance and guarantee vehicle, thereby being convenient for operation.

Preferably, in the present embodiment, the pairs of hydraulic supports 10 are preferably jacks, respectively.

Alternatively, a leveling cylinder may be used instead of the jack.

In addition, the above-mentioned pairs of hydraulic supports 10 are preferably two pairs, and the distribution scheme of the two pairs of hydraulic supports 10 is as follows:

scheme one: one pair of hydraulic supporters 10 are oppositely distributed on two sides of the front part of the two types of chassis, and the other pair of hydraulic supporters 10 are distributed on two sides of the bottom of the auxiliary frame 2.

Scheme II: two pairs of hydraulic supports 10 are respectively distributed on two sides of two ends of the bottom of the second-class chassis.

Example 7

On the basis of the above embodiments, in this embodiment, the tool box 4 includes at least one box fixedly mounted on the subframe 2.

The tool box 4 is used for accommodating a plurality of different maintenance tools, and is convenient for maintenance operation.

Preferably, in this embodiment, the tool box 4 includes a plurality of boxes, the boxes are distributed on two opposite sides of the subframe 2, and one end of the lifting arm 6 is located in an area surrounded by the boxes.

Example 8

In the present embodiment, a dedicated tool box 11 is fixedly mounted on the subframe 2.

The scheme has simple structure and reasonable design, and the special tool box 11 can accommodate some special tools, thereby facilitating the special maintenance operation.

Preferably, in this embodiment, the number of the dedicated tool boxes 11 may be one or a plurality, and the plurality of dedicated tool boxes 11 may be distributed on two sides of the subframe 2 in a pair, and may be arranged in parallel with the plurality of boxes in the tool box 4.

Example 9

In the present embodiment, the spare tire 12 is further placed on the subframe 2 on the basis of the above embodiments.

The scheme has simple structure and reasonable arrangement, and the spare tire 12 is reserved so as to be replaced when the vehicle is damaged, so that the normal operation of the vehicle is ensured.

Preferably, in this embodiment, the number of the spare tires 12 may be one or a plurality, and the plurality of spare tires 12 are placed on the subframe 2, which is located inside the dedicated tool box 11 and the tool box 4, and is reasonable in distribution, neat and beautiful.

Based on the scheme, the tool box, the spare tire, loaded cargoes, special tools and other mounting holes reserved on the cargo table surface of the auxiliary frame and the mounting and embedding iron are matched with the holes to replace the mounting and fixing positions, so that the maintenance and guarantee vehicle can conveniently execute different maintenance and guarantee operations, and the universality of the transport vehicle is guaranteed to the greatest extent.

Preferably, in this embodiment, the mounting hole and the installation of sub vehicle frame 2 goods platform surface reservation are buried iron 18 and are joined in marriage the hole, tool case 4, spare tyre, loaded goods, specialized tool etc. accessible sub vehicle frame 2 goods platform surface reserved mounting hole and installation are buried iron 18 and are joined in marriage the change installation fixed position that punches, make things convenient for the maintenance guarantee car to carry out different maintenance guarantee operations, the commonality of maximum assurance transport vechicle. The punching is matched and fixed, so that different cargoes can be reliably fixed, a large amount of general buried irons are reserved, and any equipment can be installed and fixed to the greatest extent.

Example 10

On the basis of the above embodiments, in this embodiment, an oil tank 13 is fixedly mounted at the bottom of the subframe 2, and the oil tank 13 is respectively communicated with the engine on the second-class chassis 1 and the oil engine power station 3 through pipelines.

The oil engine power station 3 and the second-class chassis 1 share the oil tank 13, so that the volume of one oil tank is saved, and the equipment integration level and loading capacity are improved; meanwhile, the problem that the oil engine is high in installation position and inconvenient to refuel is solved.

Preferably, in this embodiment, the oil tank 13 is fixedly mounted on the bottom of the subframe 2 near the cab.

In addition, oil pumps are fixedly arranged on pipelines of the oil tank 13, which are communicated with the engine on the second-class chassis 1 and the oil engine power station 3 respectively. The oil engine power station 3 has an automatic oil supplementing function and can absorb oil from the oil tanks of the two-class chassis 1.

The maintenance support vehicle hoisting operation or overhead operation provided by the invention has the following flow:

s1: the maintenance support vehicle reaches the working position;

s2: the second type chassis is hung to take power or an oil engine power station is started to supply power for a hydraulic system;

s3: the hydraulic system provides oil sources for leveling the whole vehicle, and maintains and ensures the supporting leveling of the whole vehicle;

S4: after the whole vehicle is leveled, the hydraulic system provides an oil source for the lifting maintenance device, the transportation support of the lifting maintenance device is released, and the lifting operation or the hoisting operation is performed;

S5: after the overhead operation or the hoisting operation is completed, the lifting maintenance device is stored to a transportation position, and a transportation support is installed;

S6: the hydraulic system is switched to provide an oil source for leveling the whole vehicle, and the leveling oil cylinder is withdrawn;

S7: the leveling oil cylinder is withdrawn to be in position, the second type chassis is withdrawn to take out force or the oil engine power station is closed;

s8: the maintenance support vehicle has a driving state.

The beneficial effects of the invention are as follows: the secondary chassis is modified, the auxiliary frame is additionally arranged for loading equipment, the hydraulic supporting device is used for supporting and leveling the maintenance support vehicle, a stable basic platform and an oil source are provided for high-altitude operation or hoisting operation of the lifting maintenance device, and the high-altitude operation and the hoisting operation are realized through the lifting maintenance device. The power supply of the vehicle equipment is realized through the oil engine power station, and the external power supply during emergency rescue is realized. The tool box, the spare tire, the loaded goods, the special tools and the like can be replaced and installed at fixed positions, so that different maintenance and guarantee operations can be conveniently executed by the maintenance and guarantee vehicle, the novel vehicle has the characteristics of high efficiency and convenience, and the maintenance and emergency rescue efficiency can be greatly improved.

The maintenance support vehicle provided by the invention can travel to the railway flat car for fastening, meets the railway transportation limit requirement, and can be used as railway hoisting and overhead working equipment.

It should be noted that, all the electronic components related to the present invention adopt the prior art, and the above components are electrically connected to the controller, and the control circuit between the controller and the components is the prior art.

It will be evident to those skilled in the art that the invention is not limited to the details of the foregoing illustrative embodiments, and that the present invention may be embodied in other specific forms without departing from the spirit or essential characteristics thereof. The present embodiments are, therefore, to be considered in all respects as illustrative and not restrictive, the scope of the invention being indicated by the appended claims rather than by the foregoing description, and all changes which come within the meaning and range of equivalency of the claims are therefore intended to be embraced therein. Any reference sign in a claim should not be construed as limiting the claim concerned.

Furthermore, it should be understood that although the present disclosure describes embodiments, not every embodiment is provided with a separate embodiment, and that this description is provided for clarity only, and that the disclosure is not limited to the embodiments described in detail below, and that the embodiments described in the examples may be combined as appropriate to form other embodiments that will be apparent to those skilled in the art.

The foregoing description of the preferred embodiments of the invention is not intended to limit the invention to the precise form disclosed, and any such modifications, equivalents, and alternatives falling within the spirit and scope of the invention are intended to be included within the scope of the invention.

Claims (10)

1. The utility model provides a multi-functional maintenance support car which characterized in that: the lifting maintenance device comprises a second-class chassis (1), an auxiliary frame (2), a lifting maintenance device, an oil engine power station (3) and a tool box (4), wherein the auxiliary frame (2) is fixedly arranged on the second-class chassis (1); the lifting maintenance device, the oil engine power station (3) and the tool box (4) are respectively installed on the auxiliary frame (2), the lifting maintenance device can be unfolded or folded, and the oil engine power station (3) is connected with the second-class chassis (1) through a circuit.

2. The multi-functional maintenance cart of claim 1, wherein: the lifting maintenance device comprises a hydraulic cylinder (5) and a lifting arm (6), a base is rotatably arranged on the auxiliary frame (2), and one end of the lifting arm (6) is rotatably connected with the base; the two ends of the hydraulic cylinder (5) are respectively connected with the middle part of the lifting arm (6) and the base in a rotating way.

3. The multi-functional maintenance cart of claim 2, wherein: the other end of the lifting arm (6) is fixedly provided with a platform control box (7), and the other end of the lifting arm (6) is also provided with a lifting hook (16).

4. The multi-functional maintenance cart of claim 2, wherein: the auxiliary frame (2) is fixedly provided with a transportation supporting frame (8), and the transportation supporting frame (8) is used for supporting and locking the lifting arm (6) when the lifting arm (6) is stored.

5. The multi-functional maintenance cart of claim 2, wherein: the auxiliary frame (2) is also provided with a hydraulic supply device (9), and the hydraulic supply device (9) is communicated with the hydraulic cylinder (5) through a pipeline.

6. The multi-functional maintenance cart of claim 5, wherein: a plurality of pairs of hydraulic supporters (10) are oppositely arranged on two sides of the bottom of the auxiliary frame (2), and the hydraulic supporters (10) are respectively communicated with the hydraulic supply device (9) through pipelines.

7. The multi-function maintenance cart of any of claims 1-6, wherein: the tool box (4) comprises at least one box body, and the box body is fixedly arranged on the auxiliary frame (2).

8. The multi-function maintenance cart of any of claims 1-6, wherein: the auxiliary frame (2) is fixedly provided with a special tool box (11).

9. The multi-function maintenance cart of any of claims 1-6, wherein: a spare tire (12) is also arranged on the auxiliary frame (2).

10. The multi-function maintenance cart of any of claims 1-6, wherein: the bottom of the auxiliary frame (2) is fixedly provided with an oil tank (13), and the oil tank (13) is respectively communicated with an engine on the second-class chassis (1) and the oil engine power station (3) through pipelines.