Electric four-wheeler with lifting device

Abstract

The invention relates to the technical field of new energy vehicles for riding instead of walk, in particular to an electric four-wheeler with a lifting device. The vehicle comprises a vehicle body assembly, the vehicle body assembly comprises a navigation bridge, a shell, a compartment, seats and wheels, the compartment is arranged at the rear end of the shell, a lifting assembly is installed on the rear portion of the compartment, the lifting assembly controls telescopic lifting installation, and a fixing assembly is arranged in the compartment. The fixing assembly and the lifting assembly are assembled and disassembled in a matched mode and are fixedly arranged. The lifting assembly is arranged on the rear portion of the compartment, lifting adjustment of the compartment floor can be achieved, a wheelchair user can smoothly and directly push a wheelchair into or out of the compartment, and the problem that an existing household electric four-wheeler is not friendly to people who are inconvenient to move is effectively solved; the wheelchair is effectively prevented from sliding or toppling in the vehicle driving process, riding safety is guaranteed, and riding comfort is improved.

Description

Technical Field

[0001] The present invention relates to the technical field of new energy vehicles, and in particular to an electric four-wheeled vehicle with a lifting device. Background Art

[0002] As an emerging means of transportation, household electric four-wheeled vehicles have gradually become the first choice for short-distance travel among middle-aged and elderly people due to their easy operation, environmental protection, energy saving, and high safety. The household electric four-wheeled vehicle market continues to grow in urban-rural fringe areas, small cities and rural areas, and the proportion of elderly users has increased year by year. In their daily lives, the elderly often need to go out shopping, seek medical treatment, visit relatives and friends, etc. Traditional walking or bicycles can no longer meet their needs for convenience and comfort. Electric four-wheeled vehicles have good stability, wind and rain protection functions, and high carrying capacity, which greatly improves the travel safety and quality of life of the elderly.

[0003] However, the household electric four-wheeled vehicles currently on the market are mainly designed for ordinary elderly people. There are still significant inconveniences for elderly people with limited mobility and long-term reliance on wheelchairs. When wheelchair users ride electric four-wheeled vehicles, they often need others to lift them up to get into the vehicle. The process is cumbersome and poses safety risks. Existing models generally lack convenient lifting or auxiliary devices, resulting in wheelchair users facing greater obstacles when traveling independently. The interior space design of many electric four-wheeled vehicles does not fully consider the parking and fixing of wheelchairs. After the wheelchair user rides, the transportation and placement of the wheelchair also require additional manpower support, and the user experience is poor. Compared with accessible buses and other means of transportation, household electric four-wheeled vehicles generally fail to meet the special needs of wheelchair users in terms of floor height and threshold design, affecting their ability to travel independently. Summary of the Invention

[0004] In order to solve the problem of inconvenience for elderly people in using electric four-wheeled vehicles and help wheelchair users to get on and off the vehicle without obstacles and ride safely, the present invention provides an electric four-wheeled vehicle with a lifting device.

[0005] The electric four-wheeled vehicle with a lifting device provided by the present invention adopts the following technical solutions: An electric four-wheeled vehicle with a lifting device includes a body assembly, which includes a driving platform, a shell, a carriage, seats and wheels. The driving platform is installed at the front end of the shell, the carriage is arranged at the rear end of the shell, the seat is installed facing the driving platform, and the wheels are distributed and installed at the bottom of the shell and the carriage. A lifting assembly is installed at the rear of the carriage, and the lifting assembly controls the telescopic lifting and is installed between the carriage and the ground. A fixing assembly is provided in the carriage, and the fixing assembly and the lifting assembly cooperate with each other for loading and unloading operations and fixing items.

[0006] By setting a lifting component at the rear of the car, the floor of the car can be raised and lowered, allowing wheelchair users to push their wheelchairs directly into or out of the car without the help of others. This greatly improves the ability of wheelchair users to get on and off the vehicle independently, and effectively solves the problem that existing household electric four-wheeled vehicles are not friendly to people with mobility difficulties. The fixing components set inside the car can be used in conjunction with the wheelchair and the lifting component to firmly fix the wheelchair in the car, effectively preventing the wheelchair from sliding or tipping over during the vehicle's driving, ensuring riding safety, and improving riding comfort.

[0007] Furthermore, a steering wheel and an instrument panel are installed on the driving platform. The steering wheel is connected to the wheels through a transmission and controls the steering of the wheels. The instrument panel is connected to the monitoring equipment on the upper side of the body assembly through a control wire and displays or controls the body assembly. A brake pedal is installed under the driving platform and is connected to the brake pads on the wheels through a transmission.

[0008] Furthermore, the shell includes a roof, pillars and a front baffle, the roof is arranged on the upper end of the pillars and is installed on the vehicle body through the pillars, the front baffle is installed at the front end surface of the vehicle body, and rearview mirrors are installed on both sides of the front baffle.

[0009] Furthermore, the carriage includes a bottom plate and side plates, the side plates are arranged on both sides of the bottom plate, the bottom plate and the side plates are combined to form a box-shaped structure, and a storage box is arranged in the box-shaped structure of the combination of the bottom plate and the side plates.

[0010] Furthermore, the wheels include driving wheels and supporting wheels. The driving wheels are respectively installed on both sides of the front of the vehicle body and are connected to the power assembly through transmission. The supporting wheels are respectively installed on both sides of the rear of the vehicle body, and the power assembly to which the driving wheels are connected through transmission is installed in the power box.

[0011] The driving console is equipped with a steering wheel and instrument panel, which facilitates intuitive operation and real-time understanding of the vehicle status. The shell consists of a roof, pillars and a front fender. The roof is firmly installed on the vehicle body through the pillars, effectively blocking wind, rain and sunlight, and improving riding comfort.

[0012] Furthermore, the lifting assembly includes a lifting plate and a lifting track, the lifting plate is slidably installed on the lifting track, the lifting plate includes a state one aligned with the bottom surface of the car body and a state two close to the ground, and the rear end of the lifting plate is swingably provided with an expansion plate.

[0013] Furthermore, sliding tracks are provided on both sides of the lifting plate, and the lifting plate is controlled to slide along the sliding tracks. Sliding wheels are installed on both sides of the lifting plate and are slidably installed in the sliding tracks through the sliding wheels.

[0014] Furthermore, a lifting wheel is slidably provided in the lifting track, the lifting wheel is connected to and installed with a lifting plate, a hydraulic cylinder is telescopically provided in the lifting track, the hydraulic cylinder is connected to the lifting plate and controls the lifting plate to slide and rise and fall along the lifting track.

[0015] Furthermore, one side of the expansion plate is hinged to the rear end of the lifting plate, and expansion cylinders are connected to both sides of the expansion plate. The expansion cylinders are telescopically controlled and drive the expansion plate to flip, and the expansion cylinders are hinged to the expansion plate through pull rods.

[0016] The lifting plate can slide smoothly in the lifting track and is driven by a hydraulic cylinder to smoothly adjust the lifting plate from the height of the bottom of the car to a low position close to the ground, effectively eliminating the height obstacle between the car and the ground, allowing wheelchair users or people with mobility difficulties to get on and off the vehicle easily, greatly improving the problem of difficulty in getting on and off the vehicle in traditional models. A reversible deployment plate is provided at the rear end of the lifting plate, and is actively retracted and controlled by an deployment cylinder. After the deployment plate is deployed, it can be extended to the ground to form a ramp structure, further reducing the height of the steps, facilitating the stable pushing of the wheelchair and smooth up and downhill operation, effectively adapting to different ground or slope conditions, and improving the applicability of the vehicle. The hydraulic cylinder has a self-locking function, which can automatically lock the lifting plate at any height to avoid accidental sliding of the platform due to hydraulic pressure relief, providing secondary safety protection for users.

[0017] Furthermore, the fixing assembly includes an armrest, a fixing lock and a support frame. The armrest is installed on both sides of the vehicle compartment, the fixing lock is installed on the upper surface of the lifting assembly, and the support frame is installed on the front and rear sides of the fixing lock.

[0018] The handrails are installed on both sides of the car to provide passengers with reliable grip and support when getting on and off the vehicle and during the ride, effectively preventing accidents due to vehicle shaking or personal lack of balance, and improving the overall safety of riding. The fixed lock and support frame are directly installed on the upper surface of the lifting component, which can quickly lock the wheelchair or other mobility assistive devices. During the operation of the vehicle, the fixed lock can effectively limit the movement or sliding of wheelchairs and other equipment, prevent the displacement of people or equipment due to emergencies such as sudden braking and turning, and improve the stability and safety of riding.

[0019] In summary, the present invention has the following beneficial technical effects: 1. Through the lifting assembly integrated in the rear, the lifting platform can be smoothly raised and lowered between the bottom of the vehicle and the ground. By unfolding the panel, a ramp is formed, effectively eliminating the height difference between the traditional vehicle body and the ground, making it easy for wheelchair users or people with limited mobility to get on and off the vehicle, greatly improving the barrier-free service level and social adaptability of the entire vehicle.

[0020] 2. The internal fixing components of the car can provide quick locking and multi-point support for auxiliary equipment such as wheelchairs to prevent slipping and tipping during driving. The armrest design is convenient for passengers to grab and enhance riding stability. The overall structure effectively ensures the safety of passengers and equipment.

[0021] 3. The lifting plate, hydraulic cylinder, sliding track and deployment cylinder and other devices are all electrically or automatically controlled. Users can easily complete lifting, deployment and other operations, which greatly improves the fluency and convenience of use. It has a wide range of applications and does not require high-intensity human intervention. It is suitable for the diverse needs of the elderly and special groups.

[0022] 4. The car body and the shell adopt a box-shaped structure design with a storage box inside to achieve reasonable space division and functional integration, while ensuring comfortable passenger space and improving storage and storage efficiency to meet the diverse needs of daily travel and transportation.

[0023] 5. The driving console integrates human-machine interaction devices such as the steering wheel, instrument panel and brake pedal. The combined design of front and rear drive and support wheels takes into account both drivability and stability. The instrument panel and monitoring equipment realize the information display and management of the vehicle's operating status, thereby improving the driving safety and intelligence of the entire vehicle and reducing the risk of use. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] Figure 1 This is a schematic diagram of the structure of the present invention from a first viewing angle; Figure 2 This is a schematic diagram of the structure of the present invention from a second viewing angle; Figure 3 This is a schematic structural diagram of the present invention from a third viewing angle; Figure 4 This is a schematic structural diagram of the fourth viewing angle of the present invention.

[0025] Description of reference numerals: 1. Body assembly, 11. Driving platform, 111. Steering wheel, 112. Instrument panel, 113. Brake pedal, 12. Shell, 121. Roof, 122. Pillar, 123. Front fender, 124. Rearview mirror, 13. Carriage, 131. Floor, 132. Side panel, 133. Storage box, 14. Seat, 15. Wheel, 151. Drive wheel, 152. Support wheel, 153. Power box, 2. Lifting assembly, 21. Lifting plate, 211. Sliding track, 212. Sliding wheel, 22. Lifting track, 221. Lifting wheel, 222. Hydraulic cylinder, 23. Deployment plate, 231. Deployment cylinder, 232. Pull rod, 3. Fixing assembly, 31. Armrest, 32. Fixing lock, 33. Support frame. DETAILED DESCRIPTION

[0026] The following will be combined with the Figure 1-Figure 4The technical solutions in the embodiments of the present invention are clearly and completely described. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of them. All other embodiments derived by persons of ordinary skill in the art based on the embodiments of the present invention without inventive effort are within the scope of protection of the present invention.

[0027] In the description of the present invention, it should be understood that the terms "longitudinal", "transverse", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", etc., indicating the orientation or position relationship, are based on the orientation or position relationship shown in the accompanying drawings, and are only for the convenience of describing the present invention, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present invention.

[0028] Example 1: The embodiment of the present invention discloses an electric four-wheeled vehicle with a lifting device, referring to Figure 1 , including a body assembly 1, the body assembly 1 includes a driving platform 11, a shell 12, a carriage 13, seats 14 and wheels 15, the driving platform 11 is installed at the front end of the shell 12, the carriage 13 is arranged at the rear end of the shell 12, the seat 14 is installed facing the driving platform 11, the wheels 15 are distributed and installed at the bottom of the shell 12 and the carriage 13, a lifting assembly 2 is installed at the rear of the carriage 13, the lifting assembly 2 controls the telescopic lifting and is installed between the carriage 13 and the ground, a fixing assembly 3 is provided in the carriage 13, the fixing assembly 3 cooperates with the lifting assembly 2 for loading and unloading operations and fixes the items.

[0029] Operate the control switch of the lifting component 2 to start the lifting device. The lifting component 2 drives the lifting platform to slowly sink from the initial position to the ground to form a passage. Passengers or objects go up and down the carriage 13 through the lifting platform. Operate the lifting component 2 to make the lifting platform return to a position flush with the floor of the carriage 13. Operate the fixing component 3 to firmly lock the cargo or wheelchair in the carriage 13 to prevent it from shaking or falling off during driving.

[0030] Before operating the lifting platform, be sure to confirm that the vehicle is completely stationary to avoid danger caused by vehicle movement. During the lifting process, it is strictly forbidden to stand on the lifting platform or put your hands or feet into the lifting mechanism to prevent pinching.

[0031] Example 2: On the basis of Example 1, the following is added: Reference Figure 2 and Figure 3A steering wheel 111 and an instrument panel 112 are installed on the driving platform 11. The steering wheel 111 is connected to the wheel 15 through transmission and controls the steering of the wheel 15. The instrument panel 112 is connected to the monitoring device on the upper side of the body component 1 through a control wire and displays or controls the body component 1. A brake pedal 113 is installed under the driving platform 11. The brake pedal 113 is connected to the brake pad on the wheel 15 through transmission.

[0032] Reference Figure 1-Figure 4 The shell 12 includes a roof 121, pillars 122 and a front fender 123. The roof 121 is arranged at the upper end of the pillars 122 and is installed on the vehicle body through the pillars 122. The front fender 123 is installed at the front end surface of the vehicle body. Rearview mirrors 124 are installed on both sides of the front fender 123.

[0033] Reference Figure 1-Figure 4 The carriage 13 includes a bottom plate 131 and side plates 132. The side plates 132 are arranged on both sides of the bottom plate 131. The bottom plate 131 and the side plates 132 are combined to form a box-shaped structure. A storage box 133 is arranged in the box-shaped structure composed of the bottom plate 131 and the side plates 132.

[0034] Reference Figure 1-Figure 4 The wheels 15 include drive wheels 151 and support wheels 152. The drive wheels 151 are respectively installed on both sides of the front of the vehicle body and are connected to the power assembly in a transmission manner. The support wheels 152 are respectively installed on both sides of the rear of the vehicle body. The power assembly connected to the drive wheels 151 in a transmission manner is installed in the power box 153.

[0035] First, connect the roof 121 with the pillars 122 and fix them with bolts or welding to form a shell frame. Install the frame on the chassis and ensure that the pillars 122 are firmly connected. Install the front baffle 123 at the front end of the shell and fix it with screws or snaps. Reserve interfaces on both sides of the front baffle 123, install the rearview mirror 124, and adjust the angle. Check the overall stability of the shell 12 and the firmness of each connecting component. Connect the bottom plate 131 and the side plate 132 by welding or bolts to form a box-shaped structure. Assemble the storage box 133 in the box-shaped structure and fix it on the bottom plate 131 for easy storage. Install the assembled car 13 at the rear end of the shell 12 and fix it to the shell 12 with connectors.

[0036] A driving platform 11 is installed at the front end of the shell 12, and a steering wheel 111 is installed at a specified position of the driving platform 11. A mechanical or electronic transmission connection is achieved with the wheel 15 through the steering shaft to ensure that the steering wheel 111 can control the steering of the front drive wheel 151. The instrument panel 112 is installed on the driving platform 11 and is connected to the sensors and monitoring equipment on the vehicle body component 1 through control wires to achieve real-time data collection and display. The brake pedal 113 is installed below the driving platform 11 and is connected to the brake pads on the wheel 15 through a connecting rod or an oil pressure pipeline to ensure that effective braking can be achieved after the brake pedal is actuated. After the driver gets on the vehicle, he adjusts the seat 14 to a suitable position, checks the vehicle status such as battery power, speed, etc. through the instrument panel 112, starts the vehicle, and operates the steering wheel 111 to control the steering of the front wheels to achieve steering operation. When driving, the accelerator pedal is stepped on and the brake pedal 113 is released to move the vehicle forward. When it is necessary to stop or slow down, the brake pedal 113 is stepped on to drive the brake pads on the wheel 15 through the transmission system to achieve vehicle braking.

[0037] The driving wheels 151 are installed on both sides of the front of the vehicle body and are connected to the power components in the power box 153 through the transmission shaft. The supporting wheels 152 are installed on both sides of the rear of the vehicle body to play a supporting and balancing role. The power component motor and transmission are installed in the power box 153. The power box is fixed to the bottom of the vehicle body and connected to the driving wheels 151.

[0038] Example 3: On the basis of Example 1, the following is added: Reference Figure 2-Figure 4 The lifting assembly 2 includes a lifting plate 21 and a lifting rail 22. The lifting plate 21 is slidably installed on the lifting rail 22. The lifting plate 21 includes a state 1 aligned with the bottom surface of the carriage 13 and a state 2 close to the ground. The rear end of the lifting plate 21 is swingably provided with an unfolding plate 23.

[0039] Reference Figure 2-Figure 4 Sliding rails 211 are provided on both sides of the lifting plate 21 , and the lifting plate 21 is controlled to slide along the sliding rails 211 . Sliding wheels 212 are installed on both sides of the lifting plate 21 and are slidably installed in the sliding rails 211 through the sliding wheels 212 .

[0040] Reference Figure 2-Figure 4 A lifting wheel 221 is slidingly provided in the lifting track 22, and the lifting wheel 221 is connected to and installed with the lifting plate 21. A hydraulic cylinder 222 is telescopically provided in the lifting track 22, and the hydraulic cylinder 222 is connected to the lifting plate 21 and controls the lifting plate 21 to slide and rise along the lifting track 22.

[0041] Reference Figure 2-Figure 4One side of the unfolding plate 23 is hinged to the rear end of the lifting plate 21, and an unfolding cylinder 231 is connected on both sides of the unfolding plate 23. The unfolding cylinder 231 controls the extension and retraction and drives the unfolding plate 23 to flip. The unfolding cylinder 231 is hinged to the unfolding plate 23 through a pull rod 232.

[0042] The two lifting rails 22 are firmly installed on the rear side edge of the carriage 13, and the two rails are kept parallel and perpendicular to the ground or at an appropriate inclination angle to ensure smooth lifting. The internal preset guide grooves of the lifting rails 22 are installed in conjunction with the sliding rails 211 through the sliding wheels 212 to ensure that the lifting plate 21 slides smoothly along the lifting rails 22. The lifting wheels 221 are connected to the sliding rails 211 and drive the sliding rails 211 to rise and fall.

[0043] Sliding rails 211 are fixed on both sides of the lifting plate 21, and sliding wheels 212 are installed in the sliding rails 211 to improve stability. The lifting plate 21 is slidably installed in the sliding rails 211 through the sliding wheels 212 to ensure that the plate body does not shake during the lifting process. A hydraulic cylinder 222 is pre-installed in the lifting rails 22. The output end of the hydraulic cylinder 222 is directly connected to the lifting plate 21 to ensure that the hydraulic cylinder 222 can drive the lifting plate 21 to move up and down along the track when it is actuated. Check that the oil pipes and electric control lines of the hydraulic cylinder 222 are correctly connected to ensure that the hydraulic system is sealed and leak-free.

[0044] The unfolding plate 23 is installed at the rear end of the lifting plate 21 through a hinge to ensure that the unfolding plate 23 can be freely flipped around the hinge axis. An unfolding cylinder 231 is installed on both sides of the unfolding plate 23. One end of the unfolding cylinder 231 is hinged to the unfolding plate 23 through a pull rod 232, and the other end is fixed to the lifting plate 21. Check that the connection of the unfolding cylinder 231 is firm and the movement is flexible.

[0045] When in use, first start the sliding wheel 212 to drive the lifting plate 21 to move horizontally along the sliding track 211, then start the lifting track 22 to control the lifting plate 21 to descend, and finally start the expansion cylinder 231 to push the expansion plate 23 to swing and expand.

[0046] After the cargo or wheelchair is fixed on the lifting plate 21, the above steps are reversed.

[0047] Example 4: On the basis of Example 1, the following is added: Reference Figure 3 The fixing assembly 3 includes an armrest 31, a fixing lock 32 and a support frame 33. The armrest 31 is installed on both sides of the carriage 13, the fixing lock 32 is installed on the upper surface of the lifting assembly 2, and the support frame 33 is installed on the front and rear sides of the fixing lock 32.

[0048] After the wheelchair is moved onto the lifting platform 21 , the wheels of the wheelchair are fixed using the fixing locks 32 and the supporting frames 33 . During the process, the person in the wheelchair holds the handrails 31 to maintain balance.

[0049] The above content is merely an example and explanation of the structure of the present invention. Those skilled in the art may make various modifications or additions to the described specific embodiments or replace them in a similar manner. As long as they do not deviate from the scope defined by the structure of the invention, they should all fall within the scope of protection of the present invention.

Claims

1. An electric four-wheeled vehicle with a lifting device, comprising a vehicle body assembly (1), wherein the vehicle body assembly (1) comprises a driving platform (11), a housing (12), a compartment (13), a seat (14) and wheels (15), wherein the driving platform (11) is mounted at the front end of the housing (12), the compartment (13) is arranged at the rear end of the housing (12), the seat (14) is mounted toward the driving platform (11), and the wheels (15) are distributed and mounted on the bottom of the housing (12) and the compartment (13), and characterized in that: A lifting assembly (2) is installed at the rear of the carriage (13). The lifting assembly (2) controls telescopic lifting and is installed between the carriage (13) and the ground. A fixing assembly (3) is provided in the carriage (13). The fixing assembly (3) cooperates with the lifting assembly (2) for loading and unloading operations and fixes the items.

2. The electric four-wheeled vehicle with a lifting device according to claim 1, characterized in that: A steering wheel (111) and an instrument panel (112) are installed on the driving platform (11). The steering wheel (111) is connected to the wheel (15) through a transmission and controls the steering of the wheel (15). The instrument panel (112) is connected to the monitoring device on the upper side of the vehicle body component (1) through a control wire and displays or controls the vehicle body component (1). A brake pedal (113) is installed below the driving platform (11). The brake pedal (113) is connected to the brake pad on the wheel (15) through a transmission.

3. The electric four-wheeled vehicle with a lifting device according to claim 1, characterized in that: The housing (12) comprises a roof (121), columns (122) and a front baffle (123); the roof (121) is arranged at the upper end of the columns (122) and is mounted on the vehicle body through the columns (122); the front baffle (123) is mounted on the front end of the vehicle body; rearview mirrors (124) are mounted on both sides of the front baffle (123).

4. The electric four-wheeled vehicle with a lifting device according to claim 1, characterized in that: The carriage (13) comprises a bottom plate (131) and side plates (132), wherein the side plates (132) are arranged on both sides of the bottom plate (131), and the bottom plate (131) and the side plates (132) are combined to form a box-shaped structure, wherein a storage box (133) is arranged in the box-shaped structure formed by the combination of the bottom plate (131) and the side plates (132).

5. The electric four-wheeled vehicle with a lifting device according to claim 1, characterized in that: The wheels (15) include driving wheels (151) and supporting wheels (152), wherein the driving wheels (151) are respectively mounted on both sides of the front of the vehicle body and are connected to the power assembly in a transmission manner, and the supporting wheels (152) are respectively mounted on both sides of the rear of the vehicle body, and the power assembly connected to the driving wheels (151) in a transmission manner is mounted in a power box (153).

6. The electric four-wheeled vehicle with a lifting device according to claim 1, characterized in that: The lifting assembly (2) comprises a lifting plate (21) and a lifting track (22). The lifting plate (21) is slidably mounted on the lifting track (22). The lifting plate (21) comprises a first state in which it is aligned with the bottom surface of the carriage (13) and a second state in which it is in close contact with the ground. A deployment plate (23) is swingably provided at the rear end of the lifting plate (21).

7. The electric four-wheeled vehicle with a lifting device according to claim 6, characterized in that: Sliding rails (211) are provided on both sides of the lifting plate (21), and the lifting plate (21) is controlled to slide along the sliding rails (211). Sliding wheels (212) are installed on both sides of the lifting plate (21) and are slidably installed in the sliding rails (211) through the sliding wheels (212).

8. The electric four-wheeled vehicle with a lifting device according to claim 6, characterized in that: A lifting wheel (221) is slidably provided in the lifting track (22), and the lifting wheel (221) is connected to and installed on the lifting plate (21). A hydraulic cylinder (222) is telescopically provided in the lifting track (22), and the hydraulic cylinder (222) is connected to the lifting plate (21) and controls the lifting plate (21) to slide and rise along the lifting track (22).

9. The electric four-wheeled vehicle with a lifting device according to claim 6, characterized in that: One side of the unfolding plate (23) is hinged to the rear end of the lifting plate (21), and both sides of the unfolding plate (23) are connected with unfolding cylinders (231). The unfolding cylinders (231) are telescopically controlled and drive the unfolding plate (23) to flip, and the unfolding cylinders (231) are hinged to the unfolding plate (23) via pull rods (232).

10. The electric four-wheeled vehicle with a lifting device according to claim 1, characterized in that: The fixing assembly (3) comprises an armrest (31), a fixing lock (32) and a support frame (33); the armrest (31) is mounted on both sides of the vehicle compartment (13); the fixing lock (32) is mounted on the upper surface of the lifting assembly (2); and the support frame (33) is mounted on both sides of the fixing lock (32).

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