A lifting device, a vehicle using the same and its application

Abstract

The present invention discloses a lifting device, a vehicle using the same, and an application thereof, and belongs to the field of automobile auxiliary equipment. The device includes a slide groove, a sliding block, a force plate, a lifting drive device, a transmission rod, a threaded transmission assembly, a support bearing, a fixed plate, a connecting arm, and a control system for being arranged on the bottom plate of the automobile. The present application is based on the existing automobile, and by setting a brand-new auxiliary lifting device, the position of the center of the automobile tire relative to the bottom plate of the automobile is changed under the premise of ensuring the original shock absorption system of the automobile as much as possible, thereby achieving the purpose of lowering the center of gravity of the bottom plate of the automobile. When the present application is used for a mobile dining car, the mobile dining car is moved to a set position, and the lifting device works, so that the center of the tire is close to the bottom plate. Since the tire is in contact with the ground, the present application can achieve the purpose of lowering the center height of the bottom plate. The device of the present application is ingenious in conception, reasonable in design, simple in structure, easy to use, and has high application value and good application prospects.

Description

Technical Field

[0001] The present invention relates to the field of automobile auxiliary equipment, especially the field of vehicle tire lifting, and specifically to a lifting device, a vehicle using the same, and its application. Based on the existing automobile, the present application realizes the lifting of automobile tires by designing a new lifting device, which has high practical value. Background Art

[0002] As a common means of transportation, cars have been widely used in our daily lives. Among them, the installation height of car tires is usually fixed, that is, the distance between the center of the car tire and the car floor is fixed. However, in some cases, the relative distance between the center of the car tire and the floor needs to be changed to meet the corresponding needs.

[0003] Different solutions are provided in the prior art for the above-mentioned problems. Chinese patent application CN205131427U discloses an all-terrain vehicle tire lifting device, which includes a frame and a tire, a thrust bearing is provided in the steel ring shaft hole of the tire, a support seat is provided on the thrust bearing, a pair of upper swing arms and lower swing arms arranged in parallel are hinged one above and one below on the longitudinal end surface of the support seat, the other free ends of the upper swing arms and the lower swing arms are both hinged to the frame, a shock absorber rod is hinged on one of the upper swing arms and the lower swing arms, and the other free end of the shock absorber rod is hinged to the main journal of a crankshaft, the crankshaft is provided on the frame and one of the crank arms is connected to a reducer, and the reducer is connected to a driving motor. In this structure, the structural design of the swing arm is adopted to lift and lower the tire while the position of the vehicle body remains unchanged. The above structure is used in an all-terrain vehicle and has a good effect. However, in this structure, a corresponding swing arm needs to be provided, and the setting of the swing arm is mainly used to reduce the resistance brought by the tire when the all-terrain vehicle passes through a water body.

[0004] In daily life, there are usually mobile food trucks in places with large traffic. Mobile food trucks usually sell snacks such as grilled sausages and cold noodles. They will move to the corresponding location and sell them according to the changes in the flow of people. For example, Wuxi City issued the first "Mobile Food Truck Business License" and "Mobile Food Truck Food Business License" on December 17, 2019. However, since mobile food trucks are usually improved based on existing vehicle structures, when people walk inside the mobile food truck, it is very easy for the mobile food truck to shake. After analysis, the inventor believes that this problem can be effectively solved by lowering the height of the center of gravity of the car's floor. However, the existing tire lifting device used for all-terrain vehicles obviously cannot meet this requirement.

[0005] For this reason, a new device is urgently needed to solve the above problems. Summary of the invention

[0006] The purpose of the present invention is to provide a lifting device, a vehicle using the same and its application in response to the above-mentioned problems. The present application is based on an existing automobile. By setting up a new auxiliary lifting device, the position of the center of the automobile tire relative to the automobile floor is changed under the premise of ensuring the original shock absorption system of the automobile as much as possible, thereby achieving the purpose of lowering the center of gravity of the automobile floor. When the present application is used for a mobile dining car, the mobile dining car is moved to a set position, and the lifting device works so that the center of the tire approaches the floor. Since the tire is in contact with the ground, the present application can achieve the purpose of lowering the height of the center of the floor. Furthermore, another purpose of the present application is to request protection for a vehicle using the aforementioned lifting device; at the same time, another purpose of the present application is to request protection for an application using the aforementioned lifting device. The present application is ingenious in conception, reasonable in design, simple in structure, easy to use, and has high application value and good application prospects.

[0007] In order to achieve the above object, the present invention adopts the following technical solution:

[0008] A lifting device, comprising a slide groove, a sliding block, a force plate, a lifting drive device, a transmission rod, a threaded transmission assembly, a support bearing, a fixed plate, a connecting arm, and a control system for being arranged on a bottom plate of a vehicle, wherein the slide groove, the sliding block, the threaded transmission assembly, and the fixed plate are respectively a group, and the two ends of the transmission rod are symmetrically provided with positive threads and negative threads;

[0009] The openings of the slide grooves are arranged facing each other and the slide grooves can be arranged on the bottom plate of the vehicle, the sliding block is arranged in the slide grooves and the sliding block can move relative to the slide grooves; the two ends of the force-bearing plate are respectively connected to the slide grooves and the force-bearing plate and the slide grooves together form a supporting frame;

[0010] The lifting drive device is connected to the support frame and the support frame can provide support for the lifting drive device, the lifting drive device is connected to the transmission rod and the lifting drive device can drive the transmission rod to rotate relative to the support frame, the threaded transmission components are respectively arranged on the transmission rod and the threaded transmission components are threadedly connected to the transmission rod, the two ends of the threaded transmission components are respectively provided with terminal connecting parts, the support bearings are respectively arranged on the terminal connecting parts, and the transmission rod can drive the support bearings on the transmission rod to move relative to the force plate through the threaded transmission components;

[0011] The fixing plates are arranged in parallel, and a working space for connecting with the automobile shock absorbing device is formed between the fixing plates. Both ends of the fixing plates are respectively connected with the sliding blocks, and the fixing plates can move relative to the slide grooves through the sliding blocks and drive the shock absorbing device and the tire connected with the shock absorbing device to move synchronously.

[0012] The two ends of the connecting arm are movably connected to the threaded transmission assembly and the fixed plate respectively, and the threaded transmission assembly can drive the fixed plate to move relative to the slide slot through the connecting arm. The connecting arm is divided into two groups and the connecting arms are evenly distributed on the outside of the fixed plate.

[0013] The control system is connected with the lifting drive device.

[0014] The lifting drive device is connected to a slide groove in the supporting frame.

[0015] There are four connecting arms, two of which are arranged on the outside of one fixing plate, and the remaining two connecting arms are arranged on the outside of another fixing plate.

[0016] The fixing plate is provided with a buffer groove.

[0017] The top two ends of the fixed plate are connected to the sliding blocks.

[0018] The buffer groove is located at the bottom end of the fixing plate.

[0019] The fixing plate is in an inverted triangle or T shape.

[0020] The lifting drive device is a motor; preferably, a DC motor.

[0021] The fixing plate is provided with a plurality of process holes.

[0022] The threaded transmission assembly includes a transmission connector and a threaded sleeve for threaded connection with a transmission rod. Terminal connection parts are respectively provided at both ends of the transmission connector. The threaded sleeve is connected to the transmission connector and the lifting drive device can drive the threaded sleeve and the transmission connector connected to the threaded sleeve to move relative to the transmission rod through the transmission rod.

[0023] The two ends of the connecting arm are movably connected to the transmission connecting piece and the fixed plate respectively, and the transmission connecting piece can drive the fixed plate to move relative to the sliding groove through the connecting arm.

[0024] It also includes a sliding sleeve, through which the transmission connector and the connecting arm are connected. Preferably, the sliding sleeve is a copper bearing sleeve.

[0025] A car comprises a car bottom plate, a tire, a working shaft, a shock absorbing device, and the aforementioned lifting device, wherein the working shaft is connected to the tire and can drive the tire to move, the shock absorbing device is connected to the working shaft, and the lifting device is connected to the shock absorbing device through a fixing plate therein.

[0026] The shock absorbing device is one or more of a leaf spring and a shock absorber.

[0027] The number of the lifting devices is the same as the number of tires and is 2N, where N is a natural number and N≥2.

[0028] There are four tires and four lifting devices respectively.

[0029] Application of the aforementioned lifting device.

[0030] The lifting device is used in mobile dining cars and caravans.

[0031] In response to the above problems, the invention of this application has three purposes: 1) to provide a lifting device; 2) to provide a car using the above lifting device; 3) to provide the application of the above lifting device. As mentioned above, the existing lifting device for all-terrain vehicles mainly realizes its lifting by setting a corresponding rocker arm. If this structure is used for a mobile dining car, it may cause two problems: 1) it will cause the cost of the mobile dining car to increase significantly, because the rocker arm of the all-terrain vehicle needs to cooperate with the corresponding structure, and the mobile dining car will inevitably need to be improved accordingly; 2) it may reduce the comfort of the mobile dining car, because the all-terrain vehicle mainly emphasizes passability and has poor comfort; if the rocker arm structure of the all-terrain vehicle is used in the mobile dining car, it will inevitably reduce the comfort of the mobile dining car during movement. Based on practical considerations, the inventor believes that low-cost structural improvements can be used in actual production and life.

[0032] To this end, the inventors set up corresponding lifting devices based on the existing automobile structure without changing the original shock absorbing device of the automobile. In the automobile to be protected by this application, the automobile floor, tires, working shafts, and shock absorbing devices are all original structures of the automobile; in the original structure of the automobile, the automobile floor provides corresponding support, the power system of the automobile provides corresponding power, the shock absorbing device is connected to the working shaft and the shock absorbing device can play a corresponding shock absorbing role, and the working shaft is connected to the tire, thereby driving the automobile to travel. In this application, the existing shock absorbing device of the automobile is utilized, which is conducive to improving adaptability and reducing the production cost of the automobile while ensuring the overall mobility comfort. Furthermore, the shock absorbing device can be one or more of a leaf spring and a shock absorber. In this application, the lifting drive device is a motor, preferably a DC motor.

[0033] In the present application, the lifting device cooperates with the tire, and the number of the lifting devices can be selected according to the number of tires. Preferably, the number of the lifting devices is the same as that of the tires and is 2N respectively, where N is a natural number and N≥2. Keeping the number of tires and lifting devices consistent is conducive to meeting the requirement of synchronous lifting of the entire vehicle floor.

[0034] In the present application, the lifting device includes a slide, a sliding block, a force plate, a lifting drive device, a transmission rod, a threaded transmission assembly, a support bearing, a fixed plate, a connecting arm, and a control system. In the present application, there are two slides, two sliding blocks, two threaded transmission assemblies, and two fixed plates. In the present application, the slide is arranged on the bottom plate of the car and the openings of the slide are arranged facing each other; the sliding block is arranged in the slide; in this structure, the bottom plate of the car is used to provide support for the slide, and the sliding block can move relative to the slide.

[0035] In the present application, the two ends of the force-bearing plate are respectively connected to the slide groove, and the force-bearing plate and the slide groove together constitute a supporting frame. The lifting drive device is connected to the supporting frame (preferably, the lifting drive device is connected to the slide groove), and the lifting drive device is connected to the transmission rod; the two ends of the transmission rod are symmetrically provided with positive threads and negative threads, that is, one end of the transmission rod is provided with positive threads, and the other end is provided with negative threads, which are mainly used for the sliding sleeves on the positive threads and the negative threads to synchronously approach or move away from the center of the transmission rod; the threaded transmission components are respectively arranged on the transmission rod, and the threaded transmission components are threadedly connected to the transmission rod. In this structure, the slide groove can provide corresponding support for the lifting drive device; the lifting drive device is used to drive the transmission rod to rotate relative to the slide groove; during the rotation of the transmission rod, the threaded transmission component is acted upon by the connecting arm, and the rotation of the transmission rod is converted into the axial movement of the threaded transmission component along the transmission rod; based on the positive and negative thread design on the transmission rod, the threaded transmission component can drive the fixed plate to move relative to the slide groove through the connecting arm, so that the threaded transmission component can synchronously approach or move away from the center of the lifting device.

[0036] At the same time, the two ends of the threaded transmission assembly are respectively provided with terminal connection parts, and the support bearings are respectively provided on the terminal connection parts. In addition, the two fixed plates of the application are arranged in parallel, and a working space for connecting with the automobile shock absorbing device is formed between the fixed plates, and the two ends of the fixed plates are respectively connected with the sliding blocks; that is, the working space is connected with the shock absorbing device, and by connecting the lifting device with the shock absorbing device, the working shaft and the tire connected with the shock absorbing device can be driven to move synchronously, thereby realizing the lifting and lowering of the tire, and the sliders at the two ends of the fixed plates can play a corresponding shock absorbing role.

[0037] In the present application, the two ends of the connecting arm are rotatably connected to the threaded transmission assembly and the fixed plate, respectively, and the two ends of the connecting arm can rotate relative to the threaded transmission assembly and the fixed plate, respectively. In the present application, it is preferred that the two ends of the connecting arm are rotatably connected to the threaded transmission assembly and the fixed plate, respectively, that is, the two ends of the connecting arm are connected to the threaded transmission assembly and the fixed plate, respectively, and the two ends of the connecting arm can rotate relative to the threaded transmission assembly and the fixed plate, respectively. At the same time, the control system is connected to the lifting drive device. Preferably, there are four connecting arms, two connecting arms are arranged on the outside of one fixed plate, and the remaining two connecting arms are arranged on the outside of another fixed plate.

[0038] Preferably, the fixing plate of the present application is in an inverted triangle or T-shaped shape; this design is conducive to reducing its weight while ensuring the strength of the fixing plate. Preferably, a buffer groove is provided on the fixing plate, and the buffer groove is U-shaped; in the present application, during the movement of the shock absorbing device in the vertical direction, the buffer groove can play a role in avoiding the fixing plate.

[0039] Preferably, the lifting drive device is a motor; the top two ends of the fixed plate are connected to the sliding block, and the buffer groove is located at the bottom of the fixed plate. Further, it also includes a sliding sleeve, and the transmission connector and the connecting arm are connected through the sliding sleeve; preferably, the sliding sleeve is a copper bearing sleeve.

[0040] Furthermore, the two ends of the connecting arm are movably connected to the transmission connecting piece and the fixed plate respectively, and the control system is connected to the lifting drive device; in this structure, the connecting arm is used to transmit power, and then drives the working shaft to move relative to the vehicle bottom plate through the fixed plate.

[0041] Preferably, the connecting arm is in an obtuse angle shape.

[0042] Furthermore, the threaded transmission assembly includes a transmission connector, a threaded sleeve for threaded connection with the transmission rod, and terminal connection parts are respectively provided at both ends of the transmission connector. The threaded sleeve is connected to the transmission connector, and the lifting drive device can drive the threaded sleeve and the transmission connector connected to the threaded sleeve to move relative to the transmission rod through the transmission rod. In the present application, a structural design in which the threaded sleeve and the transmission connector are matched is adopted, and a thread can be directly provided at the center of the transmission connector to form a threaded sleeve; or an existing threaded sleeve can be used to connect the threaded sleeve and the transmission connector together to form a threaded transmission assembly; in the latter method, as shown in the figure, a screw or a screw can be directly used to connect the threaded sleeve and the transmission connector as a whole, which is conducive to reducing the overall processing cost.

[0043] A car based on the aforementioned lifting device.

[0044] Further, the inventors describe the working process of the device of the present application as follows. When the lifting device of the present application is working, the lifting drive device works to drive the transmission rod to rotate relative to the slide slot; under the action of the connecting arm, the threaded transmission assembly cannot rotate synchronously with the transmission rod, and then the rotational motion is converted into the axial movement of the threaded transmission assembly along the transmission rod; based on the structural design of the positive thread and the reverse thread, the two threaded transmission assemblies on the transmission rod can be synchronously approached or moved away from the center of the lifting device; in the process of the threaded transmission assembly moving relative to the transmission rod, the threaded transmission assembly transmits the force to the fixed plate through the connecting arm; the fixed plate is limited by the sliding block relative to the slide slot, so that the fixed plate can move in the vertical direction; in the process of the fixed plate moving in the vertical direction, the fixed plate drives the working shaft to move synchronously in the vertical direction, thereby realizing the lifting and lowering of the tire relative to the bottom plate of the car; when the tire reaches the set position relative to the bottom plate of the car, the lifting drive device stops working; when the lifting drive device rotates in the reverse direction, the reverse adjustment of the tire relative to the bottom plate of the car can be realized. In this structure, the two ends of the threaded transmission assembly are respectively provided with terminal connection parts, and the support bearings are respectively provided on the terminal connection parts; at the same time, the reverse force of the connecting arm is transmitted upward, and is transmitted to the force plate through the support bearing, and is transmitted to the bottom plate of the car through the force plate. During the entire movement process, the connecting arm and the support bearing are mainly subjected to the force, and the force requirement for the lifting drive device to drive the transmission rod is relatively small. At the same time, since the existing shock absorbing device of the car is used, the structure of the car is almost unchanged, so that the present application has good adaptability and will not increase the corresponding cost, thereby making large-scale application possible. At present, based on the present application, under the premise that the connecting arm weighs enough, if a single bearing weighs one ton, a single tire can weigh four, and a car with four tires can weigh sixteen tons, and the impact on the transmission rod is extremely small; in addition, the shock absorbing system of the tire is to maintain the original shock absorbing system of the vehicle itself, which is conducive to ensuring the comfort of the vehicle itself.

[0045] Furthermore, the present application seeks to protect the application of the aforementioned lifting device, especially its application in mobile dining vehicles and motorhomes.

[0046] In summary, due to the adoption of the above technical solution, the beneficial effects of the present invention are:

[0047] (1) This application is based on the existing automobile structure and provides corresponding shock absorption through the automobile's own shock absorption device, thereby effectively simplifying the overall structural design while satisfying comfort requirements;

[0048] (2) Different from the existing all-terrain vehicle structure design that uses a rocker arm to achieve tire lifting, this application uses a brand-new lifting device that can achieve synchronous lifting of the tire and the working axle;

[0049] (3) This application is ingeniously conceived, reasonably designed, easy to use, and cost-controlled. It can be used to meet the needs of different scenarios such as mobile dining cars. It has high application value and market prospects and is worthy of large-scale promotion and application. BRIEF DESCRIPTION OF THE DRAWINGS

[0050] The present invention will now be described by way of example with reference to the accompanying drawings, in which:

[0051] Figure 1 This is a simplified structural diagram of the vehicle in Example 1 that folds up its tires through a lifting device.

[0052] Figure 2 for Figure 1 Simplified schematic diagram of the structure of the lifting device pressing the tire down.

[0053] Figure 3 It is a schematic diagram of the three-dimensional state when the lifting device in Example 1 opens the force-bearing plate.

[0054] Figure 4 for Figure 3 Schematic diagram of another angle state.

[0055] Figure 5 for Figure 3 main view.

[0056] Figure 6 Schematic diagram of the overall structure of the lifting device in Example 1.

[0057] Figure 7 This is a schematic diagram of the structure when the load-bearing plate and the slide groove are removed from the lifting device.

[0058] Figure 8 It is a structural schematic diagram of the transmission connecting parts, threaded sleeves, support bearings and sliding sleeves in the lifting device.

[0059] Fig. 9 It is a structural schematic diagram of the transmission connecting parts.

[0060] Markings in the figure: 1. slide groove, 2. sliding block, 3. force plate, 4. lifting drive device, 5. transmission rod, 6. threaded transmission assembly, 7. support bearing, 8. fixed plate, 9. connecting arm, 10. buffer groove, 20. transmission connecting part, 21. threaded sleeve, 22. end connecting part, 23. sliding sleeve, 30. automobile bottom plate, 31. tire, 32. working shaft, 33. shock absorbing device. DETAILED DESCRIPTION

[0061] All features disclosed in this specification, or steps in all methods or processes disclosed, except mutually exclusive features and / or steps, can be combined in any manner.

[0062] Any feature disclosed in this specification, unless otherwise stated, can be replaced by other equivalent or alternative features with similar purposes. That is, unless otherwise stated, each feature is only an example of a series of equivalent or similar features.

[0063] Example 1

[0064] As shown in the figure, this embodiment provides a lifting device, a vehicle using the same, and an application thereof. Among them, the vehicle of this embodiment includes a car floor, a tire, a working shaft, a shock absorbing device, and the aforementioned lifting device; the car floor is used to provide corresponding support, the working shaft is connected to the tire, and the tire can be driven to move through the working shaft; the shock absorbing device is connected to the working shaft, and the lifting device is connected to the shock absorbing device. At the same time, the number of lifting devices is consistent with the number of tires. In the car of this embodiment, the number of lifting devices and tires is four respectively, and the number of lifting devices can also be adjusted accordingly according to the number of tires.

[0065] The lifting device of this embodiment includes a slide groove, a sliding block, a force plate, a lifting drive device, a transmission rod, a threaded transmission assembly, a support bearing, a fixed plate, a connecting arm, and a control system for being arranged on the bottom plate of the automobile. Among them, there are two slide grooves, two sliding blocks, two threaded transmission assemblies, and two fixed plates respectively; positive threads and negative threads are symmetrically arranged at both ends of the transmission rod. In this embodiment, the openings of the two slide grooves face each other and are symmetrically arranged on the bottom plate of the automobile; the sliding block is arranged in the slide groove, and the sliding block can move relative to the slide groove; the two ends of the force plate are respectively connected to the slide groove, and the force plate and the slide groove together constitute a supporting skeleton.

[0066] In this embodiment, the lifting drive device uses a motor, and the motor is connected to the control system. The DC motor is connected to the slide slot, and the slide slot provides support for the DC motor; the DC motor is connected to the transmission rod and the DC motor can drive the transmission rod to rotate relative to the slide slot; two threaded transmission components are respectively arranged on the positive thread and the negative thread of the transmission rod. In this embodiment, the threaded transmission component includes a transmission connector, a threaded sleeve for threaded connection with the transmission rod, and the two ends of the transmission connector are respectively provided with terminal connection parts, and the threaded sleeve is connected to the transmission connector; in this structure, the threaded sleeve and the transmission connector are connected as a whole through screws or screws, and the terminal connection parts at both ends of the transmission connector are used to set support bearings and are rotatably connected with the connecting arm. In this embodiment, the support bearings are respectively arranged on the terminal connection parts, and the transmission rod can drive the support bearings on the transmission rod to move relative to the force plate through the threaded transmission component, that is, under the force of the connecting arm, the support bearing can slide along the force plate, and the force of the connecting arm is transmitted to the bottom plate of the car through the support bearing and the force plate in turn. At the same time, the bottom end of the fixed plate is provided with a buffer groove matched with the working shaft, and the interference between the fixed plate and the working shaft is avoided through the buffer groove. Preferably, the fixing plate of the present application is in the shape of an inverted triangle.

[0067] In this embodiment, the fixed plates are arranged in parallel, and a working space for connecting with the automobile shock absorbing device is formed between the fixed plates. Both ends of the fixed plates are respectively connected with the sliding blocks. The fixed plates can move relative to the slide grooves through the sliding blocks, and then the tires connected with the shock absorbing device are driven to rise and fall synchronously through the shock absorbing device. In this embodiment, the shock absorbing device can be a leaf spring or a shock absorber.

[0068] Preferably, the two ends of the connecting arm are rotatably connected to the terminal connecting part and the fixed plate of the threaded transmission assembly, that is, the two ends of the connecting arm can rotate relative to the terminal connecting part and the fixed plate, respectively, so that the terminal connecting part moves toward or away from the center of the transmission rod, which can be converted into a pressing down or lifting operation of the connecting arm relative to the fixed plate. In this embodiment, there are four connecting arms, two of which are arranged on the outside of one fixed plate, and the remaining two connecting arms are arranged on the outside of another fixed plate, that is, the connecting arms are evenly distributed on the outside of the fixed plate; adopting this structure is conducive to ensuring the stability and reliability of the force of the shock absorbing device and avoiding excessive wear caused by a single-sided connecting arm.

[0069] Preferably, the connecting arm of this embodiment is in an obtuse angle shape, and the connecting arm includes a first connecting portion rotatably connected to the end connecting portion, a second connecting portion connected to the first connecting portion as a whole, and the second connecting portion is rotatably connected to the fixed plate; as shown in the figure, the angle formed between the first connecting portion and the second connecting portion is an obtuse angle.

[0070] Furthermore, this embodiment further comprises a sliding sleeve, and the transmission connecting member and the connecting arm are connected via the sliding sleeve. Preferably, the sliding sleeve is a copper bearing sleeve.

[0071] The working process of the device of this embodiment is as follows:

[0072] (1) Rise of the vehicle floor relative to the tire

[0073] The DC motor rotates forward, driving the transmission rod to rotate forward relative to the slide slot, driving the two threaded transmission components on the transmission rod to move relative to the center of the transmission rod; during the movement of the threaded transmission component, the threaded transmission component drives the fixed plate to press down through the connecting arm; during the downward pressing of the fixed plate, the slide slot limits the fixed plate through the sliding block, and the fixed plate drives the tire center away from the vehicle bottom plate through the working shaft until it reaches the set position, thereby realizing the lifting of the vehicle bottom plate relative to the tire; during the lifting process, the support bearing moves relative to the force plate, the connecting arm transmits the force to the force plate through the support bearing, and the force plate transmits the force to the vehicle bottom plate;

[0074] (2) The lowering of the vehicle floor relative to the tire

[0075] The DC motor rotates in the opposite direction, driving the transmission rod to rotate in the opposite direction relative to the slide slot, driving the two threaded transmission components on the transmission rod to move away from the center of the transmission rod; during the movement of the threaded transmission component, the threaded transmission component drives the fixed plate to lift through the connecting arm; during the lifting of the fixed plate, the slide slot limits the fixed plate through the sliding block, and the fixed plate drives the center of the tire to move closer to the car floor through the working shaft until it reaches the set position, thereby realizing the descent of the car floor relative to the tire; during the descent process, the support bearing moves relative to the force plate, the connecting arm transmits the force to the force plate through the support bearing, and the force plate transmits the force to the car floor.

[0076] This application has a reasonable conception, ingenious design, high practical value, and can be widely used in scenarios such as mobile dining cars and motorhomes.

[0077] The above embodiments of the present application are merely examples for illustrating the present application, and are not intended to limit the implementation methods of the present application. For those skilled in the art, other different forms of changes and modifications can be made based on the above description. It is impossible to list all implementation methods here. Any obvious changes or modifications derived from the technical solution of the present application are still within the scope of protection of the present application.

Claims

1. A car with a lifting floor, characterized in that: It includes a car bottom plate, a tire, a working shaft, a shock absorbing device and a lifting device, wherein the working shaft is connected to the tire and can drive the tire to move, the shock absorbing device is connected to the working shaft, and the lifting device is connected to the shock absorbing device through a fixed plate therein; The lifting device comprises a slide groove, a sliding block, a force plate, a lifting drive device, a transmission rod, a threaded transmission assembly, a support bearing, a fixed plate, a connecting arm and a control system for being arranged on the bottom plate of the vehicle. The slide groove, the sliding block, the threaded transmission assembly and the fixed plate are respectively a group, and the two ends of the transmission rod are symmetrically provided with positive threads and negative threads; The openings of the slide grooves are arranged facing each other and the slide grooves can be arranged on the bottom plate of the vehicle, the sliding block is arranged in the slide grooves and the sliding block can move relative to the slide grooves; the two ends of the force-bearing plate are respectively connected to the slide grooves and the force-bearing plate and the slide grooves together form a supporting frame; The lifting drive device is connected to the support frame and the support frame can provide support for the lifting drive device, the lifting drive device is connected to the transmission rod and the lifting drive device can drive the transmission rod to rotate relative to the support frame, the threaded transmission components are respectively arranged on the transmission rod and the threaded transmission components are threadedly connected to the transmission rod, the two ends of the threaded transmission components are respectively provided with terminal connecting parts, the support bearings are respectively arranged on the terminal connecting parts, and the transmission rod can drive the support bearings on the transmission rod to move relative to the force plate through the threaded transmission components; The fixing plates are arranged in parallel, and a working space for connecting with the automobile shock absorbing device is formed between the fixing plates. Both ends of the fixing plates are respectively connected with the sliding blocks, and the fixing plates can move relative to the slide grooves through the sliding blocks and drive the shock absorbing device and the tire connected with the shock absorbing device to move synchronously. The two ends of the connecting arm are movably connected to the threaded transmission assembly and the fixed plate respectively, and the threaded transmission assembly can drive the fixed plate to move relative to the slide slot through the connecting arm. The connecting arm is divided into two groups and the connecting arms are evenly distributed on the outside of the fixed plate. The control system is connected to the lifting drive device; The lifting drive device is a DC motor; The threaded transmission assembly includes a transmission connection piece and a threaded sleeve for threaded connection with a transmission rod, and the two ends of the transmission connection piece are respectively provided with terminal connection parts, the threaded sleeve is connected to the transmission connection piece, and the lifting drive device can drive the threaded sleeve and the transmission connection piece connected to the threaded sleeve to move relative to the transmission rod through the transmission rod; The two ends of the connecting arm are movably connected to the transmission connecting piece and the fixed plate respectively, and the transmission connecting piece can drive the fixed plate to move relative to the slide groove through the connecting arm; The shock absorbing device is one or more of a leaf spring and a shock absorber; The fixing plate is provided with a buffer groove; The buffer groove is located at the bottom end of the fixing plate.

2. The automobile according to claim 1, characterized in that: There are four connecting arms, two of which are arranged on the outside of one fixing plate, and the remaining two connecting arms are arranged on the outside of another fixing plate.

3. The automobile according to claim 1, characterized in that: The fixing plate is in an inverted triangle or T shape.

4. The automobile according to claim 1, characterized in that: The top two ends of the fixed plate are connected to the sliding blocks.

5. The automobile according to claim 1, characterized in that: The fixing plate is provided with a plurality of process holes.

6. The automobile according to claim 1, characterized in that: The lifting drive device is connected to a slide groove in the supporting frame.

7. The automobile according to any one of claims 1 to 6, characterized in that: It also includes a sliding sleeve, and the transmission connecting piece and the connecting arm are connected through the sliding sleeve.

8. The automobile according to claim 7, characterized in that: The sliding shaft sleeve is a copper bearing sleeve.

9. Use of the automobile according to any one of claims 1 to 8.

10. The use according to claim 9, characterized in that: Use the car as a mobile dining car or motorhome.

Images