A multipurpose service vehicle

Abstract

The utility model relates to the technical field of overhauling equipment, especially relates to a multipurpose overhaul vehicle, include: electric tricycle and set up on the electric tricycle overhaul equipment, the overhaul equipment includes crane, hydraulic station, submersible pump, welding equipment, gas detector and axial flow fan, the crane is used for hoisting the equipment to be replaced, the hydraulic station is used for providing hydraulic power for the crane, the submersible pump is used for the temporary drainage of sewage well, the welding equipment is used for welding operation, the gas detector is used for detecting the poisonous gas concentration in sewage well, the axial flow fan is used for discharging the poisonous gas in well.

Description

Technical Field

[0001] This utility model relates to the field of maintenance equipment technology, and in particular to a multi-purpose maintenance vehicle. Background Technology

[0002] In traditional factory production operations, regular inspection and maintenance of small equipment is crucial for ensuring normal equipment operation and production continuity. Currently, such maintenance work is generally carried out using primitive manual methods, mainly relying on maintenance personnel to perform equipment testing, fault diagnosis, component replacement, and routine maintenance using simple hand tools. This method has several limitations: During maintenance, personnel frequently need to travel between tool storage points and equipment locations, and the acquisition and replacement of tools and spare parts are time-consuming. Furthermore, due to the physical limitations of manual labor, disassembly, assembly, and handling are slow, further extending maintenance time and impacting overall production efficiency. Traditional maintenance methods are heavily reliant on human resources, involve high labor intensity, and are inefficient.

[0003] Currently, while some maintenance auxiliary devices exist for specific scenarios, such as mobile tool carts or simple lifting platforms, their functions are relatively limited, and they still largely rely on manual pushing and operation, failing to fundamentally change the labor-intensive nature of maintenance work. Furthermore, existing devices often lack integrated tool and parts management systems, making it difficult to quickly adapt to the maintenance needs of different equipment, resulting in insufficient versatility and flexibility.

[0004] Therefore, there is a lack of multi-purpose automated maintenance equipment that can integrate multiple functions, is easy to move and operate, can adapt to different maintenance scenarios, improve maintenance efficiency, reduce manpower consumption, improve working conditions, and has good adaptability to meet the higher requirements of modern factories for equipment maintenance. Utility Model Content

[0005] (a) Technical problems to be solved In view of the above-mentioned shortcomings and deficiencies of the prior art, the present invention provides a multi-purpose maintenance vehicle, which solves the technical problems of existing maintenance auxiliary equipment having single function and relying on manual pushing.

[0006] (II) Technical Solution To achieve the above objectives, the main technical solutions adopted by this utility model include: A multi-purpose maintenance vehicle includes: an electric tricycle and maintenance equipment mounted on the electric tricycle; The maintenance equipment includes a crane, a hydraulic station, a submersible pump, welding equipment, a gas detector, and an axial flow fan. The crane is used to lift the equipment to be replaced, the hydraulic station is used to provide hydraulic power to the crane, the submersible pump is used for temporary drainage of the sewage well, the welding equipment is used for welding operations, the gas detector is used to detect the concentration of toxic gases in the sewage well, and the axial flow fan is used to discharge toxic gases from the well.

[0007] The crane includes a base and support columns; The base is fixedly installed inside the body of the electric tricycle, the support column is rotatably mounted on the top of the base, and its side is provided with a rotating handle for driving its circumferential rotation.

[0008] The crane also includes a first hydraulic cylinder and a telescopic boom; The telescopic boom is rotatably connected to the top of the support column, and the rotating shaft is set along the horizontal direction; The two ends of the first hydraulic cylinder are respectively hinged to the support column and the telescopic boom, and are used to drive the telescopic boom to pitch relative to the support column.

[0009] The telescopic boom includes a fixed section and a telescopic section that can extend and retract relative to each other, and a second hydraulic cylinder is provided at its top; The cylinder body of the second hydraulic cylinder is connected to the fixed section, and the piston rod of the second hydraulic cylinder is connected to the telescopic section, for driving the telescopic section to extend or retract relative to the fixed section; The first hydraulic cylinder is hinged to the fixed section of the telescopic boom.

[0010] It also includes an air pump, which is used to supply air to the air gun; The front bottom of the vehicle body is provided with a first frame and a second frame side by side, the hydraulic station is integrated in the first frame, and the air pump is integrated in the second frame; The rear bottom of the vehicle body is provided with a third frame and a fourth frame side by side. The submersible pump, welding equipment and axial flow fan are integrated into the third frame. The fourth frame is provided with a pull-out drawer for storing maintenance tools, including an air gun.

[0011] The front side of the vehicle body is provided with a hook for hanging the gas detector, and the gas detector is provided with a rain cover. The vehicle body is also equipped with a work warning light and an emergency alarm light on the top front side.

[0012] The vehicle body is equipped with a searchlight at the front side.

[0013] The electric tricycle has a battery pack installed under the seat to power the entire vehicle's equipment; A socket is provided on the side of the seat, and the socket is connected to the battery pack.

[0014] The electric tricycle is also equipped with an A-frame ladder, traffic cones, and movable barriers inside its body.

[0015] (III) Beneficial Effects The beneficial effects of this utility model are as follows: The multi-purpose maintenance vehicle provided by this utility model is highly integrated and multifunctional. By integrating six core functions—lifting, hydraulics, drainage, welding, gas detection, and ventilation—dispersed in municipal, power, and emergency maintenance scenarios onto an electric tricycle, a mobile maintenance workstation is formed, significantly improving work efficiency. It overcomes the problem of traditional maintenance requiring the dispatch of multiple specialized vehicles and equipment, and the difficulty in coordinating them, greatly shortening emergency response and fault handling time. By using an electric tricycle as the chassis, it combines the range of a motor vehicle with the flexibility and maneuverability of a non-motor vehicle, easily navigating narrow work areas to reach the work point. Furthermore, the pure electric drive of the tricycle results in zero emissions and low noise, making it suitable for long-term operation within a factory.

[0016] By incorporating support columns, the boom can rotate 180° in the horizontal plane, greatly expanding the lifting operation range and solving the problem of limited vehicle parking space. It allows for operation at different angles without repeatedly moving the vehicle, offering high operational flexibility. The mechanical rotating handle is simple in structure, has a low failure rate, and is intuitive and reliable to operate, making it easy for workers to quickly learn.

[0017] By incorporating a first hydraulic cylinder, the hook height can be flexibly adjusted, enabling the lifting of high-level equipment as well as the precise placement of heavy objects in low-level pits, covering a larger three-dimensional working space. The hydraulic drive provides a significantly greater lifting force than manual operation, easily lifting heavy equipment. Simultaneously, the self-locking characteristic of the hydraulic system ensures stability and safety during operation, allowing for precise micro-motion control.

[0018] By incorporating a telescopic boom structure, the crane achieves a variable working radius. When retracted, the vehicle structure is compact, facilitating travel and storage; when extended, it effectively covers distant work points, solving the problem of the vehicle not being able to closely follow the work area and extending the working radius. Within a limited vehicle size, the telescopic structure achieves a working range that traditional fixed-arm cranes would require larger dimensions, perfectly balancing the conflict between vehicle maneuverability and functionality. Attached Figure Description

[0019] Figure 1 This is a front view of the multi-purpose maintenance vehicle of this utility model; Figure 2 This is a rear view of the multi-purpose maintenance vehicle of this utility model; Figure 3This is a left view of the multi-purpose maintenance vehicle of this utility model; Figure 4 This is a right view of the multi-purpose maintenance vehicle of this utility model; Figure 5 This is a top view of the multi-purpose maintenance vehicle of this utility model; Figure 6 This is a schematic diagram of the structure of the crane of this utility model.

[0020] [Explanation of Labels in the Attached Image] 1: Electric tricycle; 1a: First frame; 1b: Second frame; 1c: Third frame; 1d: Fourth frame; 2: Battery pack; 3: Crane; 31: Base; 32: Turntable; 33: Support column; 34: Rotary handle; 35: Electric winch; 36a: First hydraulic cylinder; 36b: Second hydraulic cylinder; 37: Telescopic boom; 38: Wire rope; 39: Hook; 4: Hydraulic station; 5: Air pump; 6: Submersible pump; 7: Welding equipment; 8: Axial flow fan; 9: Fire extinguishing equipment; 10: A-frame ladder; 11: Traffic cones; 12: Movable fence; 13: Drawer; 14: Socket; 15: Searchlight; 16: Gas detector; 17: First aid kit; 18: Work warning light; 19: Emergency alarm light. Detailed Implementation

[0021] To better understand the above technical solutions, exemplary embodiments of the present invention will be described in more detail below with reference to the accompanying drawings. Although exemplary embodiments of the present invention are shown in the drawings, it should be understood that the present invention can be implemented in various forms and should not be limited to the embodiments set forth herein. Rather, these embodiments are provided so that the present invention can be understood more clearly and thoroughly, and that the scope of the present invention can be fully conveyed to those skilled in the art.

[0022] See appendix Figure 1-6As shown, this utility model embodiment provides a multi-purpose maintenance vehicle, including an electric tricycle 1 and maintenance equipment mounted on the electric tricycle 1. The maintenance equipment includes a crane 3, a hydraulic station 4, a submersible pump 6, welding equipment 7, a gas detector 16, and an axial flow fan 8. The crane 3 is used to lift equipment to be replaced, the hydraulic station 4 provides hydraulic power, the submersible pump 6 is used for temporary drainage, the welding equipment 7 is used for welding operations, the gas detector 16 is used to detect the concentration of toxic gases in the sewage well, and the axial flow fan 8 is used to discharge toxic gases from the well. The multi-purpose maintenance vehicle is highly integrated and multifunctional. By integrating six core functions—lifting, hydraulics, drainage, welding, gas detection, and ventilation—dispersed in municipal, power, and emergency maintenance scenarios onto the electric tricycle 1, a mobile maintenance workstation is formed. This significantly improves operational efficiency, overcomes the problems of traditional maintenance requiring the dispatch of multiple specialized vehicles and equipment, and greatly shortens emergency response and fault handling time. By using an electric tricycle as the chassis, it combines the range of a motor vehicle with the flexibility and maneuverability of a non-motor vehicle, allowing it to easily navigate narrow work areas and reach the work site directly. Purely electric drive, zero emissions, and low noise make it suitable for long-term operation within a factory.

[0023] The crane 3 includes a base 31 and a support column 33. The base 31 is fixedly installed inside the electric tricycle 1. The support column 33 is located on top of the base 31, and the support column 33 and the base 31 are rotatably connected via a turntable 32. The side of the support column 33 is equipped with a rotating handle 34 for driving its circumferential rotation. The operator can manually pull the rotating handle 34 to rotate the crane 3 to the desired position. By fixing the base 21 inside the vehicle body, the crane 3 has a solid base, a stable and reliable structure, and ensures overall stability and safety during lifting operations. The circumferentially rotatable design of the support column 33 allows the boom to rotate 180° in the horizontal plane, greatly expanding the lifting operation range and solving the problem of limited vehicle parking positions. It allows for operation at different angles without repeatedly moving the vehicle, providing high operational flexibility. The mechanical rotating handle 34 has a simple structure, low failure rate, and intuitive and reliable operation, making it easy for operators to quickly learn how to use it.

[0024] The crane 3 also includes a first hydraulic cylinder 36a and a telescopic boom 37. The telescopic boom 37 is rotatably connected to the top of the support column 33. The two ends of the first hydraulic cylinder 36a are hinged to the support column 33 and the telescopic boom 37, respectively, and are used to drive the telescopic boom 37 to rotate relative to the support column 33. By driving the telescopic boom 37 to pitch through the first hydraulic cylinder 36a, the height of the hook 39 can be flexibly adjusted, enabling it to lift high-level equipment and accurately place heavy objects in low-level pits, covering a larger three-dimensional working space. The hydraulic drive provides a much greater lifting force than manual operation, easily lifting heavy equipment. At the same time, the self-locking characteristic of the hydraulic system ensures stability and safety during operation, and allows for precise micro-motion control.

[0025] The support column 33 is inclined, forming a stable triangular structure with the first hydraulic cylinder 36a and the telescopic boom 37, which facilitates the first hydraulic cylinder 36a to drive the telescopic boom 37 to pitch and move.

[0026] In this embodiment, the maximum lifting angle of the telescopic boom 37 driven by the first hydraulic cylinder 36a is 115°.

[0027] The telescopic boom 37 includes a fixed section and a telescopic section that can extend and retract relative to each other, with a second hydraulic cylinder 36b at its top. The cylinder body of the second hydraulic cylinder 36b is connected to the fixed section, and the piston rod of the second hydraulic cylinder 36b is connected to the telescopic section, used to drive the telescopic section to extend or retract. The telescopic boom structure gives the crane 3 a variable working radius. When retracted, the vehicle structure is compact, facilitating travel and storage; when extended, it can effectively cover distant work points, solving the problem of the vehicle not being able to closely follow the work point and extending the working radius. Within a limited vehicle size, the telescopic structure achieves a working range that traditional fixed boom cranes would require larger dimensions to reach, perfectly balancing the contradiction between vehicle maneuverability and functionality.

[0028] The crane 3 also includes an electric winch 35 and a hook 39. The electric winch 35 is fixedly mounted on the top of the telescopic boom 37, and the hook 39 is located at the far end of the telescopic section and connected to the electric winch 35 via a wire rope 38. The electric winch 35 provides the vertical lifting and lowering power for heavy objects, completing the final key step of the lifting operation and realizing the lifting function of the crane 3. Compared with a manual hoist, the electric winch 35 has a faster lifting speed, saves time and labor, reduces the labor intensity of operators, and is equipped with overload protection to improve operational safety.

[0029] It also includes an air pump 5, which supplies air to an air gun, a maintenance tool used for cleaning dust. A first frame 1a and a second frame 1b are located at the bottom of the front of the vehicle body. The hydraulic station 4 is integrated into the first frame 1a, and the air pump 5 is integrated into the second frame 1b. A third frame 1c and a fourth frame 1d are located at the bottom of the rear of the vehicle body. A submersible pump 6, welding equipment 7, and an axial flow fan 8 are integrated into the third frame 1c, and a pull-out drawer 13 is located in the fourth frame 1d for storing maintenance tools.

[0030] By incorporating air pump 5, a power source for pneumatic tools (such as air guns for cleaning and blowing) is provided, further expanding the vehicle's operational capabilities.

[0031] By fully utilizing the underbody space, the modular frame design integrates various equipment, achieving centralized and orderly storage. This avoids problems such as collisions and inconvenience caused by cluttered equipment in the cargo box, optimizing the spatial layout and ensuring vehicle stability. The tool drawer 13 allows for orderly and readily accessible access to various maintenance tools, improving the convenience and professionalism of maintenance work. Integrating equipment into the frame reduces exposure to sun and rain, as well as the impact of bumps during driving, helping to extend the equipment's lifespan and providing protection.

[0032] Among them, air pump 5 is a small air pump with a rated exhaust pressure of 0.7MPa, used for air replenishment and purging. Hydraulic station 4 is a small hydraulic station with a rated pressure of 3MPa, used for the hydraulic cylinder of small crane 3. Submersible pump 6 is a DC submersible pump, used for temporary drainage. Welding equipment 7 is a small DC welding machine, used for on-site welding operations.

[0033] The gas detector 16 is a portable four-in-one gas detector. A hook for mounting the gas detector 16 is located on the front of the vehicle, and a rain cover is provided on the exterior. By placing the gas detector 16 in a prominent position at the front of the vehicle and equipping it with a rain cover, its availability and data accuracy are ensured at all times. This provides crucial pre-emptive safety assurance for operations in confined spaces such as mines and tunnels, effectively preventing poisoning and explosion accidents and enhancing operational safety.

[0034] The vehicle is also equipped with a work warning light 18 and an emergency alarm light 19 on the top front side to enhance the warning effect. The work warning light and the emergency alarm light can be used for slow-moving warning and emergency alarm respectively, which significantly improves the visibility of the vehicle when operating in dangerous environments, effectively warns oncoming people and vehicles, ensures the personal safety of maintenance personnel, and complies with work safety regulations.

[0035] The vehicle is equipped with searchlights 15 on its sides, providing ample illumination to enable the maintenance vehicle to perform tasks such as nighttime emergency rescue and emergency lighting for sudden incidents, extending effective working time from daytime to all-weather operation. The side-mounted searchlights 15 can be flexibly adjusted in angle, perfectly illuminating the working area to the side and rear of the vehicle, eliminating blind spots caused by the vehicle itself, providing excellent visibility for precise nighttime operations, and ensuring work quality and safety. The searchlights 15 are located at the front side of the vehicle to avoid obstructing the crane 3.

[0036] The electric tricycle 1 has a battery pack 2 located under the seat. The battery pack 2 consists of four 60V lithium-ion batteries that power the entire vehicle's equipment. The battery pack 2 provides a unified clean energy source for all the electric / hydraulic equipment in the vehicle, freeing it from dependence on noisy and polluting internal combustion generators or external mains power. This enables true self-driving and self-powered operation, improving environmental adaptability and operational independence.

[0037] A socket 14 is provided on the side of the seat, which is connected to the battery pack 2, greatly enhancing the external expansion capability. The socket serves as a mobile power interface, which can supply power to standard electrical appliances such as power tools, greatly expanding the vehicle's on-site uses and meeting the diverse power needs of modern maintenance.

[0038] The vehicle body is also equipped with an A-frame ladder 10, traffic cones 11, and movable barriers 12. The A-frame ladder 10 facilitates work at height. The traffic cones 11 and movable barriers 12 can quickly establish a safe working area, isolate the work site, and prevent secondary accidents. It also includes fire extinguishing equipment 9, which uses a 35kg dry powder fire extinguisher and is installed on the fifth frame at the rear bottom of the vehicle body. The fifth frame is located between the first frame 1a and the second frame 1b, and is used for temporary fire extinguishing on site. Fire extinguishing equipment 9 provides self-rescue capabilities in the initial stages of an electrical fire. These devices together constitute a multi-layered, three-dimensional safety protection system covering personal safety, on-site safety, and fire safety. The inclusion of these auxiliary devices enables this maintenance vehicle not only to handle faults but also to establish a safe and standardized temporary workstation, becoming a highly functional comprehensive emergency maintenance platform, fully demonstrating its multi-purpose functionality.

[0039] The rated load capacity of the electric tricycle 1 is 1.5 tons. Its basic structure includes the body, seat, electrical instruments, power and transmission device, and control and braking device.

[0040] It also includes a first aid kit 17, which is placed in the sixth frame on the right side of the front of the vehicle body for emergency medical treatment of on-site work injuries.

[0041] Example 1: The multi-purpose maintenance vehicle of this embodiment can be used for the maintenance of submersible pumps in sewage wells. The maintenance method is as follows: After receiving the repair request, the maintenance team drove the multi-purpose maintenance vehicle to the site, turned on the work warning lights 18, placed traffic cones 11 to guide traffic, surrounded the sewage well with movable fences 12, opened the well cover, plugged the DC submersible sewage pump 6 into the DC power socket 14 to start the pump and empty the sewage well, and used a portable four-in-one gas detector 16 to detect the concentration of toxic and harmful gases in the sewage well. If the concentration exceeded the standard, the axial flow fan 8 was used to force ventilation until the concentration of toxic and harmful gases in the well was within acceptable limits. Then, maintenance workers wearing protective equipment were arranged to go down into the well to work. The workers used hydraulic shears and an angle grinder powered by a small hydraulic station 4 to cut the rusted guide chains, guide rails, and pipes, and then used a small crane 3 to lift the damaged submersible sewage well. The pump is placed into the multi-functional maintenance vehicle. A small DC welding machine 7 is used to re-weld the guide rails and pipes. Then, a small crane 3 is used to lift the spare submersible pump into the sewage well for installation. After installation, the maintenance workers lift the pump out of the well, close the well cover, and test the working status of the submersible pump. After it is running normally, the maintenance results are reported. The movable fence 12 and traffic cones 11 are removed, the work warning lights 18 are turned off, and the damaged submersible pump is sent to the warehouse before returning to the duty room. In case of emergency during maintenance, the person in charge on site should quickly activate the emergency alarm lights 19 and call for rescue using the walkie-talkie. In case of accidental injury, the first aid kit 17 can be used for simple treatment before sending the patient to the hospital. If a fire breaks out during welding, the fire should be extinguished quickly with the fire extinguishing equipment 9.

[0042] Example 2: The multi-purpose maintenance vehicle of this embodiment can be used for nighttime maintenance of monitoring equipment. The maintenance method is as follows: After receiving a repair request, the maintenance team arrives at the site in their multi-purpose maintenance vehicle. They turn on the warning lights 18, place traffic cones 11 to direct traffic, turn on the spotlights 15, extend the aluminum alloy ladder 10 to the faulty monitoring equipment, and have maintenance workers, wearing protective gear, climb the ladder to the faulty equipment. They then remove the outer casing, clean the dust with an air gun supplied by a small air pump 5, and perform testing. If the equipment is damaged, they replace it with a spare camera. After the repair is completed, they test the monitoring equipment's working status until it is running normally, report the repair results, remove the traffic cones 11, turn off the warning lights 18 and spotlights 15, and send the damaged camera to the warehouse before returning to the duty room. During the repair process, in case of an emergency, the on-site supervisor should quickly activate the emergency alarm lights 19 and call for rescue using a walkie-talkie. In case of accidental injury, the first aid kit 17 can be used for simple treatment before the patient is sent to the hospital. If an electrical fire occurs, the fire should be extinguished quickly with the fire extinguisher 9.

[0043] In summary, the multi-purpose maintenance vehicle of this utility model has a simple structure, high integration of maintenance tools, and convenient maintenance operation. It can quickly complete the maintenance of various small equipment and solve the problem of low efficiency in existing maintenance operations.

[0044] The multi-purpose maintenance vehicle provided in this embodiment of the invention features high integration and multifunctionality. It integrates six core functions—lifting, hydraulics, drainage, welding, gas detection, and ventilation—dispersed in municipal, power, and emergency maintenance scenarios, onto an electric tricycle 1, forming a mobile maintenance workstation. This significantly improves operational efficiency, overcoming the difficulties of coordinating multiple specialized vehicles and equipment required for traditional maintenance, and greatly shortening emergency response and troubleshooting time. By using the electric tricycle 1 as the chassis, it combines the range of a motor vehicle with the flexibility and maneuverability of a non-motor vehicle, easily navigating narrow work areas to reach the work site. Purely electric drive, zero emissions, and low noise make it suitable for long-term operation within factories.

[0045] By setting up support columns 33, the boom can rotate 180° in the horizontal plane, greatly expanding the lifting operation range and solving the problem of limited vehicle parking positions. It allows for operation at different angles without repeatedly moving the vehicle, resulting in high operational flexibility. The mechanical rotating handle 34 has a simple structure, low failure rate, and intuitive and reliable operation, making it easy for workers to quickly learn how to use it.

[0046] By incorporating the first hydraulic cylinder 36a, the height of the hook 39 can be flexibly adjusted, enabling it to lift high-level equipment as well as precisely place heavy objects in low-level pits, covering a larger three-dimensional working space. The hydraulic drive provides a significantly greater lifting force than manual operation, easily lifting heavy equipment. Simultaneously, the self-locking characteristic of the hydraulic system ensures stability and safety during operation, allowing for precise micro-motion control.

[0047] By incorporating a telescopic boom structure, crane 3 achieves a variable working radius. When retracted, the vehicle structure is compact, facilitating travel and storage; when extended, it effectively covers distant work points, solving the problem of the vehicle not being able to closely follow the work point and extending the working radius. Within a limited vehicle size, the telescopic structure achieves a working range that traditional fixed-arm cranes would require larger dimensions, perfectly balancing the contradiction between vehicle maneuverability and functionality.

[0048] In the description of this utility model, it should be understood that the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of indicated technical features. Therefore, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of this utility model, "a plurality of" means two or more, unless otherwise explicitly specified.

[0049] In this utility model, unless otherwise explicitly specified and limited, the terms "installation," "connection," "joining," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components. For those skilled in the art, the specific meaning of the above terms in this utility model can be understood according to the specific circumstances.

[0050] In this utility model, unless otherwise explicitly specified and limited, "above" or "below" the second feature can mean that the first feature is in direct contact with the second feature, or that the first feature is in indirect contact with the second feature through an intermediate medium. Furthermore, "above," "on top of," and "over" the second feature can mean that the first feature is directly above or diagonally above the second feature, or simply indicates that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "beneath" the second feature can mean that the first feature is directly below or diagonally below the second feature, or simply indicates that the first feature is at a lower horizontal level than the second feature.

[0051] In the description of this specification, the terms "one embodiment," "some embodiments," "embodiment," "example," "specific example," or "some examples," etc., refer to specific features, structures, materials, or characteristics described in connection with that embodiment or example, which are included in at least one embodiment or example of the present invention. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples. Moreover, without contradiction, those skilled in the art can combine and integrate the different embodiments or examples described in this specification, as well as the features of different embodiments or examples.

[0052] Although embodiments of the present invention have been shown and described above, it is understood that the above embodiments are exemplary and should not be construed as limiting the present invention. Those skilled in the art can make modifications, alterations, substitutions and variations to the above embodiments within the scope of the present invention.

Claims

1. A multi-purpose maintenance vehicle, characterized in that, include: An electric tricycle (1) and maintenance equipment installed on the electric tricycle (1); The maintenance equipment includes a crane (3), a hydraulic station (4), a submersible pump (6), a welding device (7), a gas detector (16), and an axial flow fan (8). The crane (3) is used to lift the equipment to be replaced. The hydraulic station (4) is used to provide hydraulic power to the crane (3). The submersible pump (6) is used for temporary drainage of the sewage well. The welding device (7) is used for welding operations. The gas detector (16) is used to detect the concentration of toxic gases in the sewage well. The axial flow fan (8) is used to discharge toxic gases from the well.

2. The multi-purpose maintenance vehicle according to claim 1, characterized in that, The crane (3) includes a base (31) and a support column (33); The base (31) is fixedly installed inside the body of the electric tricycle (1), the support column (33) is rotatably disposed on the top of the base (31), and its side is provided with a rotating handle (34) for driving its circumferential rotation.

3. The multi-purpose maintenance vehicle according to claim 2, characterized in that, The crane (3) also includes a first hydraulic cylinder (36a) and a telescopic boom (37). The telescopic boom (37) is rotatably connected to the top of the support column (33), and the axis of rotation of the telescopic boom (37) is set along the horizontal direction; The two ends of the first hydraulic cylinder (36a) are hinged to the support column (33) and the telescopic boom (37) respectively, and are used to drive the telescopic boom (37) to pitch relative to the support column (33).

4. The multi-purpose maintenance vehicle according to claim 3, characterized in that, The telescopic boom (37) includes a fixed section and a telescopic section that can be extended and retracted relative to each other, and a second hydraulic cylinder (36b) is provided at its top. The cylinder body of the second hydraulic cylinder (36b) is connected to the fixed section, and the piston rod of the second hydraulic cylinder (36b) is connected to the telescopic section, for driving the telescopic section to extend or retract relative to the fixed section; The first hydraulic cylinder (36a) is hinged to the fixed section of the telescopic boom (37).

5. The multi-purpose maintenance vehicle according to claim 2, characterized in that, It also includes an air pump (5) for supplying air to the air gun; The front bottom of the vehicle body is provided with a first frame (1a) and a second frame (1b) arranged side by side. The hydraulic station (4) is integrated in the first frame (1a) and the air pump (5) is integrated in the second frame (1b). The rear bottom of the vehicle body is provided with a third frame (1c) and a fourth frame (1d) arranged side by side. The submersible pump (6), welding equipment (7) and axial flow fan (8) are integrated in the third frame (1c). The fourth frame (1d) is provided with a pull-out drawer (13) for storing maintenance tools, including an air gun.

6. The multi-purpose maintenance vehicle according to claim 2, characterized in that, The front side of the vehicle body is provided with a hook for hanging the gas detector (16), and the gas detector (16) is provided with a rain cover. The vehicle body is also equipped with a work warning light (18) and an emergency alarm light (19) on the top front side.

7. The multi-purpose maintenance vehicle according to claim 6, characterized in that, The vehicle body is equipped with a searchlight (15) at the front side.

8. The multi-purpose maintenance vehicle according to claim 1, characterized in that, The electric tricycle (1) has a battery pack (2) under the seat for powering the vehicle's equipment; The seat has a socket (14) on its side, which is connected to the battery pack (2).

9. The multi-purpose maintenance vehicle according to claim 1, characterized in that, The electric tricycle (1) is also equipped with an A-frame ladder (10), traffic cones (11) and movable fences (12) inside its body.

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