Automobile lifting device and control method

Abstract

The present invention discloses an automobile lifting device and a control method, including a bottom support module and a lifting module. Two rows of lifting modules are arranged in an array on the bottom support module, and each row is provided with multiple lifting modules. The lifting modules in each row are set to be larger than the maximum vehicle wheelbase. Each lifting module is provided with an independent controller. The two rows of lifting modules arranged in an array can locate vehicles with different wheelbases and realize precise positioning and lifting of the wheel parts. The structure of the present application is simple and does not require additional auxiliary mechanisms to realize independent lifting of the vehicle. At the same time, the lifting modules of the array are individually controlled to realize the lifting of the disassembled battery without manual picking and placing, which reduces the labor intensity of workers, improves the safety of the overall operation, and greatly improves work efficiency.

Description

Technical Field

[0001] The present invention relates to the fields of automobile lifting and electronic control, and in particular to an automobile lifting device and a control method. Background Art

[0002] In recent years, with the gradual depletion of fossil fuels and the intensification of environmental pollution problems, new energy electric vehicles have received high attention from various countries due to their green and environmentally friendly characteristics. At the same time, the operation of cars will inevitably cause urban environmental pollution. New energy electric vehicles can effectively alleviate these pollution problems.

[0003] At present, my country is the world's number one producer and seller of new energy vehicles, and the number of new energy vehicles in use is gradually increasing. With the development of electric vehicles, the issue of scrapping and recycling of new energy vehicles has gradually attracted attention. As the most valuable power battery in electric vehicles, there is currently no platform that can recycle power batteries during the vehicle lifting process. At present, traditional vehicle lifting platforms are still used to lift the car and then add other lifting systems, which increases the complexity and difficulty of the system, while increasing the workload of vehicle lifting, thereby reducing work efficiency. Summary of the Invention

[0004] The object of the present invention is to provide a car lifting device and a control method thereof, so as to overcome the problems of the existing car lifting system being complex and having low working efficiency.

[0005] A car lifting device includes a bottom support module and a lifting module. Two lifting module groups are arranged in an array on the bottom support module. Each lifting module group is provided with multiple lifting modules. The length of each lifting module group is greater than the maximum vehicle wheelbase. Each lifting module is controlled by an independent controller.

[0006] Preferably, the bottom support module includes a support base plate and lifting legs, and the lifting legs are fixed around the bottom of the support base plate.

[0007] Preferably, the lifting legs adopt electromagnetic hydraulic cylinders.

[0008] Preferably, the supporting base plate is fixedly connected by a plurality of frame structures.

[0009] Preferably, a control system for controlling the opening and closing of the lifting module is provided at the lower end of the bottom support module, an electrical control cabinet is provided at the lower end of the bottom support module, and the control system is installed in the electrical control cabinet.

[0010] Preferably, the lifting module includes a cover plate, a lifting bracket and a lifting connecting base. The lifting bracket is installed on the supporting base through the lifting connecting base. The lifting connecting base and the supporting base are connected by bolts. The cover plate is installed on the upper end of the lifting bracket. A pressure sensor is arranged between the lifting bracket and the cover plate.

[0011] Preferably, a cavity is provided in the lifting connection base, and a through hole is provided at the bottom of the lifting connection base.

[0012] Preferably, the lifting bracket adopts a double-layer scissor-type lifting mechanism.

[0013] Preferably, the lifting bracket includes two cross-arranged supporting movable arms, the middle parts of the two supporting movable arms are rotatably connected by a shear shaft, the upper end of one of the supporting movable arms is rotatably connected to the bottom of the cover plate by a pin shaft, and the upper end of the other supporting movable arm is installed on the bottom of the cover plate through a slider; the lower end of one of the supporting movable arms is rotatably connected to the lifting connection base by a pin shaft, and the lower end of the other supporting movable arm is installed on the bottom of the lifting connection base through a slider, and the lifting connection base is provided with a for driving the other supporting movable arm to slide on the lifting connection base.

[0014] Preferably, a slide groove is provided at the bottom of the cover plate, and a slider capable of sliding in the slide groove is provided in the slide groove, and the slider is rotationally connected to the upper end of the other supporting movable arm through a pin shaft.

[0015] A method for lifting a car comprises the following steps:

[0016] S1, placing the car to be disassembled on the lifting module on the bottom support module;

[0017] S2, obtaining the force conditions of each lifting module, and simultaneously lifting the lifting modules with forces greater than a set threshold to a set height;

[0018] S3, lifting the battery lifting module to a set height, then disassembling the vehicle to be disassembled, and placing the disassembled battery assembly on the disassembled vehicle.

[0019] Compared with the prior art, the present invention has the following beneficial technical effects:

[0020] The present invention provides a car lifting device, including a bottom support module and a lifting module. Two rows of lifting modules are arranged in an array on the bottom support module, and each row is provided with multiple lifting modules. The lifting modules in each row are set to be larger than the maximum vehicle wheelbase. Each lifting module is provided with an independent controller. The two rows of lifting modules arranged in an array can locate vehicles with different wheelbases and realize precise positioning and lifting of the wheel parts. The present application has a simple structure and does not require additional auxiliary mechanisms to realize independent lifting of the vehicle. At the same time, the lifting modules in the array are controlled separately to realize the lifting of the disassembled battery without manual picking and placing, which reduces the labor intensity of workers, improves the safety of the overall operation, and greatly improves work efficiency.

[0021] A method for lifting a car. When a scrapped electric car has no power, a universal lifting platform can be constructed through a modular lifting mechanism, while also being capable of disassembling the power battery. The lifting mechanism provided by the present invention is easy to move, occupies a small area, and is based on universal integration, which greatly reduces the difficulty of disassembling the power battery of the scrapped electric car. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 Schematic diagram of the structure of a car lifting device in an embodiment of the present invention.

[0023] Figure 2 Schematic diagram of the bottom support module structure in an embodiment of the present invention.

[0024] Figure 3 It is a schematic diagram of the lifting module structure in an embodiment of the present invention.

[0025] Figure 4 Schematic diagram of the lifting bracket structure in an embodiment of the present invention.

[0026] Figure 5 This is a schematic diagram of a long single body structure of a lifting bracket in an embodiment of the present invention.

[0027] Figure 6 This is a control flow chart of the lifting module in an embodiment of the present invention.

[0028] Figure 7 This is a control flow chart of the battery lifting module in an embodiment of the present invention.

[0029] In the figure, 1. bottom support module; 2. lifting module; 3. support base; 4. lifting legs; 5. cover plate; 6. lifting bracket; 7. lifting connection base; 8. drive device; 9. supporting movable arm; 10. shear shaft; 11. battery lifting module. DETAILED DESCRIPTION

[0030] In order to enable those skilled in the art to better understand the solutions of the present invention, the technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the embodiments described are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts should fall within the scope of protection of the present invention.

[0031] like Figures 1 to 5As shown, a car lifting device includes a bottom support module 1 and a lifting module 2. The lifting modules 2 are arranged in an array on the bottom support module 1. Two groups of lifting module groups arranged in parallel are arranged on the bottom support module 1. Each lifting module group includes multiple lifting modules 2. The bottom support module 1 serves as the supporting structure of the entire device. A control system is set at the lower end of the bottom support module 1. Each lifting module 2 is connected to an independent controller for independently controlling the opening and closing of the lifting module 2; an electrical control cabinet is set at the lower end of the bottom support module 1, and the control system is installed in the electrical control cabinet.

[0032] The bottom support module 1 includes a supporting base plate 3 and lifting legs 4. The lifting legs 4 are fixed around the bottom of the supporting base plate 3 and are used to support the base plate 3 and change its height. The lifting legs 4 use electromagnetic hydraulic cylinders with sufficient power and stable structure, which are suitable for highly stable lifting under heavy loads.

[0033] The supporting base plate 3 is formed by fixing multiple frame structures with a length, width and height of 300mmx300mmx40mm to form a plate-like structure. The multiple frame structures are integrally formed, welded, or connected by bolts. Each frame structure is provided with a bolt hole for fixing the lifting module 2.

[0034] The control system in the electrical control cabinet includes a low-voltage control system and a high-voltage control system. The control system in the electrical control cabinet is connected to the high and low voltage power supply systems of the wire-controlled chassis, and can also use mains electricity or three-phase industrial electricity.

[0035] In order to unify the power and simplify the structure in the present invention, the lifting legs 4 at the bottom of the supporting base plate 3 in the present invention adopt an electromagnetic hydraulic cylinder. The present invention arranges the lifting legs 4 around the supporting base plate 3 and arranges the electrical control cabinet structure at the corners of the supporting base plate 3, which can realize the movement of the lifting system. Due to the support of the bottom support module 1, the system can be placed on a light chassis with a smaller load, thereby reducing costs.

[0036] The lifting module 2 array is arranged on the bottom support module 1, and two rows can be arranged along the direction of the vehicle tires, which is suitable for lifting vehicles of different specifications. The lifting module 2 specifically includes a cover plate 5, a lifting bracket 6 and a lifting connecting base 7. The lifting bracket 6 is installed on the supporting base plate 3 through the lifting connecting base 7. The lifting connecting base 7 is connected to the supporting base plate 3 by bolts. The cover plate 5 is installed on the upper end of the lifting bracket 6. A pressure sensor is provided between the lifting bracket 6 and the cover plate 5 for obtaining whether the lifting module 2 is subjected to pressure. For multiple lifting modules 2 in the array, when the vehicle is disassembled and placed, the lifting module 2 is lifted when it is subjected to pressure, thereby meeting the lifting purpose of vehicles of different specifications.

[0037] A cavity is provided in the lifting connection base 7, and a through hole is provided at the bottom of the lifting connection base 7, which is aligned with the hollow hole structure on the lifting bracket 6 and can be used for the control system of the lifting bracket 6 in the lifting connection base 7 and the wiring of the pressure sensor.

[0038] The length, width and height of the cover plate 5 are 300mm x 300mm x 230mm respectively. The lifting height of the lifting module 2 is 0-400mm. Four pressure sensors are placed at the four corners of the cover plate. In the present invention, in order to leave enough operating space after the vehicle is lifted, the lifting bracket 6 adopts a double-layer scissor lifting mechanism. The specific structure is shown in the attached figure. Figure 4 As shown, it includes two cross-arranged supporting movable arms 9, the middle parts of the two supporting movable arms 9 are rotatably connected by a shear shaft 10, the upper end of one of the supporting movable arms 9 is rotatably connected to the bottom of the cover plate 5 through a pin shaft, and the upper end of the other supporting movable arm 9 is installed on the bottom of the cover plate 5 through a slider; a slide groove is provided at the bottom of the cover plate 5, and a slider that can slide in the slide groove is provided in the slide groove, and the slider is rotatably connected to the upper end of the other supporting movable arm 9 through a pin shaft; the lower end of one of the supporting movable arms 9 is rotatably connected to the lifting connection base 7 through a pin shaft, and the lower end of the other supporting movable arm 9 is installed on the bottom of the lifting connection base 7 through a slider, and the lifting connection base 7 is provided with 8 for driving the other supporting movable arm 9 to slide on the lifting connection base 7.

[0039] The driving device adopts an electromagnetic cylinder, which is fixed on the lifting connecting base 7. The driving rod of the electromagnetic cylinder is rotatably connected to the lower end of another supporting movable arm 9. The driving rod of the electromagnetic cylinder drives the lower end of the supporting movable arm 9 to slide, and the position of the lower ends of the two supporting movable arms 9 changes, thereby realizing the changes of raising and lowering.

[0040] like Figure 5 As shown, a battery lifting module 11 is installed between the two parallel lifting module groups. Battery lifting module 11 can adopt the same structure as lifting module 2, and the length of battery lifting module 11 is the same as that of lifting module 2. Battery lifting module 11 adopts a long single-body structure, and the length, width and height of the cover on the long single-body structure are 900mm x 300mm x 130mm. In order to support the power battery when the vehicle is lifted, the lifting height of battery lifting module 11 is 0mm-600mm. To achieve this lifting height at a relatively low height, the lifting mechanism adopts a single-layer scissor-type lifting mechanism. The electrical control bottom shell is connected to the lifting mechanism via bolts. For sealing performance, a sealing strip will be installed at the connection to ensure the reliability of the module.

[0041] The low-voltage control system communicates with the controllers of each modular lifting module 2 via the CAN bus. It also controls the on / off switching of the high-voltage system. A pressure strain gauge is positioned on each of the four sides of the cover plate 5 of the lifting module 2, forming a pressure sensor at the bottom of the module. An LED light is positioned at the lower end of the cover plate. The control switch of the lifting module 2 is connected to the controller of the lifting module 2. When the lifting module is subjected to pressure, the LED light at the lower end of the module 2 displays a color corresponding to the pressure state, such as green, to indicate the current state of the lifting module.

[0042] A height sensor is installed on the cover plate 5 to determine the lifting height of the lifting module. The electrical control cabinet is responsible for connecting the high-voltage circuit, collecting the sensor model transmitted by the lifting module 2, and determining the on / off status of the high-voltage circuit. The electrical control cabinet is equipped with a CAN card collection module, a high-voltage access system, a logic judgment module, and an electromagnetic relay to control the on / off of the high-voltage system. The logic judgment module is connected to an external screen to interact with the control system.

[0043] The individual modules of the lifting device in this invention have two control modes: automatic and manual. The control mode is adjusted on a screen connected to the electrical control cabinet. In automatic control mode, the user manually inputs the desired lift height and lift sequence. The manual control module, by publishing the desired lift height and lift sequence in real time, controls the lift module 2 to lift the vehicle and remove the power battery.

[0044] Figure 6 This is a control flow diagram of the lifting module of the present invention. The specific implementation process is as follows: when the pressure sensor at the bottom of a single lifting module 2 detects a pressure exceeding the set threshold, it proves that the wheel force point is above this lifting module 2, and at the same time changes the color of the LED light at the bottom of the lifting module 2 to indicate the current lifting module status. The lifting height and lifting sequence are determined by the set automatic control system or manual input. The lifting module obtains the lifting height through the height sensor at its bottom to achieve closed-loop control of the high-voltage system. During the lifting process, the LED light flashes intermittently to indicate the current status of the lifting module.

[0045] Figure 7 This is a schematic diagram of the battery lift module's lifting control. The battery lift module in this invention determines the lift height and lifting sequence through manual input or an automated control system. Its function is to remove vehicle chassis components such as the power battery. Therefore, its control logic is such that after the logic judgment system outputs a lift signal, the battery lift module continues lifting until the pressure sensor receives a pressure signal or a stop signal, indicating that the cover of the long unit has contacted the component to be lifted or that the lift has been stopped. At this point, the electromagnetic relay is disconnected, shutting off the high-voltage system.

[0046] The height sensor at the bottom of the lifting module 2 can be an infrared sensor, a radar sensor or a height calculation sensor;

[0047] A height calculation sensor is used. The height calculation sensor is set on the electromagnetic cylinder of the driving device. The height difference of the lifting platform is calculated by calculating the length change of the electromagnetic cylinder. The calculation formula is shown in the following formula 1:

[0048]

[0049] Where Δh is the lifting height difference of the lifting platform, ΔL is the length difference of the electromagnetic cylinder, L1 is the half of the shear axis length, L2 is the length of the electromagnetic cylinder from the fixed position of the shear axis to the center axis, and L3 is the length of the electromagnetic cylinder before the height change.

[0050] Since the lifting device has height requirements and height feedback, a closed-loop control system can be formed, which increases the accuracy of control.

[0051] Figure 1 This is an overall structural diagram of a car lifting device provided by the present invention. The electric vehicle to be disassembled is placed on the car lifting device by a forklift or other transport tool. After the electric vehicle is placed on the car lifting device, the pressure sensor on the lifting module 2 detects which lifting module the vehicle tire is pressing on, and the pressure sensor signal is transmitted to the electrical control cabinet. The control cabinet automatically controls the high-voltage power supply module of the pressurized lifting module to lift it. This solves the problem of different wheelbases and wheelbases of different types of vehicles. After the vehicle is lifted, the ground clearance of the power battery of a general electric vehicle is generally between 150mm and 200mm, which can provide 650-700mm of operating space for personnel or power battery disassembly platforms. During the power battery disassembly process, the four long cells in the middle can be lifted up to place the disassembled power battery. Afterwards, the two long longitudinal cells in the middle can be lowered, and the long transverse cell lifting module can be lowered a distance to facilitate forklift operation. At this time, the power battery can be completely disassembled, and it can be completed with the same set of lifting mechanisms. After the power battery is removed, all the lifting mechanisms can be lowered and the vehicle can be taken away by forklift, waiting for the next electric vehicle to be disassembled. Since the base structure of the present invention is provided with a support structure, the wire-controlled chassis is only used to move the lifting mechanism and provide power, so the load-bearing capacity requirements of the wire-controlled chassis are not high, saving costs.

Claims

1. A car lifting device, characterized in that: The invention comprises a bottom support module (1) and a lifting module (2), wherein two lifting module groups are arranged in an array on the bottom support module (1), each lifting module group is provided with a plurality of lifting modules (2), each lifting module (2) is provided with an independent controller, a cavity is provided in the lifting connection base (7), a through hole is provided at the bottom of the lifting connection base (7), the lifting module (2) comprises a cover plate (5), a lifting bracket (6) and a lifting connection base (7), the lifting bracket (6) is installed on the supporting base plate (3) through the lifting connection base (7), the lifting connection base (7) and the supporting base plate (3) are connected by bolts, the cover plate (5) is installed on the upper end of the lifting bracket (6), a pressure sensor is provided between the lifting bracket (6) and the cover plate (5), and the lifting bracket (6) is provided with a pressure sensor. The lifting bracket (6) adopts a double-layer scissor-type lifting mechanism. The lifting bracket (6) includes two cross-arranged supporting movable arms (9). The middle parts of the two supporting movable arms (9) are rotatably connected through a shear shaft (10). The upper end of one of the supporting movable arms (9) is rotatably connected to the bottom of the cover plate (5) through a pin shaft, and the upper end of the other supporting movable arm (9) is installed on the bottom of the cover plate (5) through a slider; the lower end of one of the supporting movable arms (9) is rotatably connected to the lifting connection base (7) through a pin shaft, and the lower end of the other supporting movable arm (9) is installed on the bottom of the lifting connection base (7) through a slider. The lifting connection base (7) is provided with (8) for driving the other supporting movable arm (9) to slide on the lifting connection base (7).

2. The vehicle lifting device according to claim 1, characterized in that: The bottom support module (1) comprises a support base plate (3) and lifting legs (4), and the lifting legs (4) are fixed around the bottom of the support base plate (3).

3. The vehicle lifting device according to claim 2, characterized in that: The lifting legs (4) adopt an electromagnetic hydraulic cylinder, and the supporting base plate (3) adopts a plurality of frame-type structures for fixed connection.

4. The vehicle lifting device according to claim 1, characterized in that: A battery lifting module (11) is arranged between the two parallel lifting module groups.

5. The vehicle lifting device according to claim 1, characterized in that: A control system for controlling the opening and closing of the lifting module (2) is provided at the lower end of the bottom support module (1), and an electrical control cabinet is provided at the lower end of the bottom support module (1), and the control system is installed in the electrical control cabinet.

6. The vehicle lifting device according to claim 1, characterized in that: A slide groove is provided at the bottom of the cover plate (5), and a slider capable of sliding in the slide groove is provided in the slide groove. The slider is rotatably connected to the upper end of another supporting movable arm (9) through a pin shaft.

7. A method for lifting a car based on the device according to claim 1, characterized in that: The following steps are involved: S1, placing the car to be disassembled on the lifting module on the bottom support module; S2, obtaining the force conditions of each lifting module, and simultaneously lifting the lifting modules with forces greater than a set threshold to a set height; S3, lifting the battery lifting module to a set height, then disassembling the vehicle to be disassembled, and placing the disassembled battery assembly on the disassembled vehicle.

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