A hydraulic lifting system for a detachable automobile

Abstract

The utility model discloses a detachable automobile and hydraulic lifting system thereof, detachable automobile includes car frame and detachable carriage, and hydraulic lifting system includes: lifting support mechanism includes four first hydraulic cylinders, and is installed on the outside near four corners of car frame or the outside of four corners of detachable carriage respectively, attitude sensor is installed on car frame or the bottom of detachable carriage, hydraulic pump is installed on the frame, and hydraulic pump is communicated with four first hydraulic cylinders through solenoid valve assembly, attitude sensor gathers the information of the angle of inclination of carriage and sends to controller, and controller sends the instruction of start -stop and rotating speed to drive motor, and controller still sends the instruction of the intercommunication of hydraulic pump and any first hydraulic cylinder to solenoid valve assembly. The hydraulic lifting system can control the lifting speed of carriage conveniently, quickly and accurately, and the lifting of carriage is more balanced, and the practicality is high.

Description

Technical Field

[0001] This utility model relates to the field of detachable vehicle technology, and in particular to a detachable automobile and its hydraulic lifting system. Background Technology

[0002] With the rapid development of the logistics and transportation industry, detachable trucks are widely used in container transportation, emergency material allocation, and other fields due to their advantages of flexible loading and unloading and rapid transfer. These trucks typically have hydraulic or mechanical support legs at the four corners of the cargo box or near the four corners, as well as on the outer sides of the chassis near the four corners, allowing for the separation or assembly of the cargo box from the chassis frame through lifting.

[0003] While existing hydraulic or mechanical support legs can drive the lifting and lowering of the carriage to meet the needs of separating or assembling the carriage from the frame, they can only perform simple lifting and lowering control, and are still lacking in height adjustment and precision, as well as being inconvenient to use.

[0004] A hydraulically lifted detachable car exchange box is disclosed in Chinese patent document CN2023209775077. This detachable car exchange box includes a truck and a chassis. The chassis has two sliding grooves, and a truck bed is mounted on the upper surface of the chassis. Four support components are slidably connected within the two sliding grooves inside the truck bed. A pushing component is also located inside the chassis. In this hydraulically lifted detachable car exchange box, the support components stabilize the height of the truck bed, and the pushing component pushes the truck bed out of the upper surface of the chassis. After the support components have completed their function of supporting and assisting the movement of the truck bed, it is returned to its original position, thus detaching the truck bed from the chassis. However, this hydraulically lifted detachable car exchange box requires significant changes to the chassis frame structure, which can easily affect the structural rigidity of the chassis frame, resulting in reduced vehicle safety and low practicality.

[0005] To address the shortcomings of the existing technology, providing a detachable vehicle and its hydraulic lifting system is a worthwhile research topic. Utility Model Content

[0006] This invention provides a detachable vehicle and its hydraulic lifting system, which can quickly, accurately and stably adjust the lifting of the vehicle compartment, and is highly practical.

[0007] The objective of this utility model is achieved through the following technical solution:

[0008] A hydraulic lifting system for a detachable vehicle, the detachable vehicle comprising a vehicle frame and a detachable cargo box, the hydraulic lifting system comprising:

[0009] The lifting support mechanism includes four first hydraulic cylinders, which are respectively installed on the outer side of the vehicle frame near the four corners, or on the outer side of the four corners of the detachable cargo box;

[0010] Attitude sensors are mounted on the vehicle frame or in the detachable undercarriage.

[0011] The hydraulic pump is mounted on the chassis.

[0012] The solenoid valve assembly connects the hydraulic pump to the four first hydraulic cylinders via the solenoid valve assembly.

[0013] The controller is electrically connected to the attitude sensor, the drive motor of the hydraulic pump, and the solenoid valve, respectively.

[0014] The attitude sensor collects the tilt angle information of the carriage and sends it to the controller. The controller sends start / stop and speed commands to the drive motor. The controller also sends a command to the solenoid valve assembly to connect the hydraulic pump to any of the first hydraulic cylinders.

[0015] Optionally, the solenoid valve assembly includes four first sub-solenoid valves, and the hydraulic pumps are respectively connected to the four hydraulic pumps through the first and fourth sub-solenoid valves.

[0016] Optionally, the solenoid valve assembly further includes a main solenoid valve, and the hydraulic pump is connected to the main solenoid valve and then connected to four sub-sole solenoid valves respectively.

[0017] Optionally, the hydraulic lifting system further includes a lateral telescopic mechanism, comprising two second hydraulic cylinders, respectively installed at the bottom of two corners at the front of the detachable carriage; the solenoid valve assembly further includes a second sub-solenoid valve, and the hydraulic pump is also connected to the two second hydraulic cylinders through the second sub-solenoid valve.

[0018] Optionally, the hydraulic lifting system further includes a remote controller, which is wirelessly connected to the controller and is used to send commands to the controller to control the synchronous on / off of the four first sub-solenoid valves or to control the on / off of any one of the first sub-solenoid valves.

[0019] Optionally, the hydraulic lifting system further includes a battery module, which is electrically connected to the drive motor via a relay, and is also electrically connected to the controller via an inverter, and then to the solenoid valve and attitude sensor.

[0020] Optionally, it also includes photovoltaic power generation components, which are installed on the top of the detachable compartment, and the output of the photovoltaic power generation components is electrically connected to the charging end of the battery module through an inverter.

[0021] Optionally, the charging end of the battery module is also electrically connected to the load power supply end of the detachable vehicle and / or to the on-board starter battery via a high-voltage inverter.

[0022] Optionally, the battery module's charging end is also connected to an AC charging interface.

[0023] According to another aspect of the present invention, the present invention also provides a detachable vehicle, which includes the hydraulic lifting system of any of the above.

[0024] 1. This detachable vehicle and its hydraulic lifting system can use hydraulic cylinders installed at the four corners of the frame to lift the cargo box. The synchronous lifting or independent lifting control of the four hydraulic cylinders can be achieved by controlling the solenoid valve assembly, which makes it more convenient to control the lifting of the cargo box, has high practicality, and the lifting control of the cargo box is faster and more precise.

[0025] 2. This detachable vehicle and its hydraulic lifting system, by installing attitude sensors at the bottom of the vehicle body, can adjust the lifting of the hydraulic cylinders according to the tilt angle information of the vehicle body, so that the vehicle body is in a horizontal state during and after lifting, ensuring lifting balance and guaranteeing vehicle safety.

[0026] 3. This detachable truck and its hydraulic lifting system can automatically control the level of the truck bed by the controller, or the user can control the lifting of the truck bed by simple operation based on the controller. It is practical, convenient, easy to operate, and has higher practicality.

[0027] 3. This detachable vehicle and its hydraulic lifting system have the advantages of simple structure, reliable performance, convenient use, high practicality, and wide applicability. Attached Figure Description

[0028] Figure 1 This is a schematic diagram of the overall structure of the vehicle frame and carriage of this utility model. Figure 1 ;

[0029] Figure 2 for Figure 1 Enlarged view of a portion of point A in the middle;

[0030] Figure 3 This is a schematic diagram of the overall structure of the vehicle frame and carriage of this utility model. Figure 1 ;

[0031] Figure 4 This is a schematic diagram of the overall structure of the vehicle frame and carriage of this utility model. Figure 1 ;

[0032] Figure 5 This is a schematic diagram of the hydraulic lifting system of this utility model.

[0033] Reference numerals: 1. Vehicle frame; 2. Detachable cargo box; 3. Hydraulic pump; 4. Drive motor; 5. Battery box; 6. Controller; 7. First solenoid valve; 8. Second solenoid valve; 9. First hydraulic cylinder; 10. Second hydraulic cylinder; 11. Attitude sensor; 12. Photovoltaic power generation module; 13. On-board starting battery; 14. Load power supply terminal; 15. 220V charging interface. Detailed Implementation

[0034] The embodiments of this utility model are described in detail below. Examples of these embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and intended to explain this utility model, and should not be construed as limiting this utility model. Example 1

[0035] like Figure 1-4 As shown, the detachable vehicle of this embodiment includes a vehicle frame 1 (the front and wheels are not shown, and these structures are not related to the innovation of this application) and a detachable cargo box 2. The vehicle frame 1 is used to support the detachable cargo box 2 above. The detachable vehicle includes a hydraulic lifting system for controlling the lifting and lowering of the detachable cargo box 2 and adjusting its height and level.

[0036] like Figure 2 As shown, the hydraulic lifting system in this embodiment includes a lifting support mechanism, a hydraulic pump 3, a solenoid valve assembly, a posture sensor 11, and a controller 6. The lifting support mechanism includes four first hydraulic cylinders 9, as shown in the figure. Figure 1 Four first hydraulic cylinders 9 are respectively mounted on the outer sides of the vehicle frame 1 near the four corners via mounting plates. Here, the four first hydraulic cylinders 9 are vertically mounted on the vehicle frame 1, with their telescopic ends facing the detachable cargo box 2 above; the bottom of the detachable cargo box 2 is equipped with support seats (not shown in the figure) that match the first hydraulic cylinders 9. The detachable cargo box 2 can be raised and lowered by controlling the extension and retraction of the first hydraulic cylinders 9.

[0037] This embodiment uses a frame-mounted lifting hydraulic cylinder. In other embodiments, the lifting hydraulic cylinder can also be mounted in the cargo box. Specifically, the four first hydraulic cylinders of the lifting support mechanism are installed near the four corners of the detachable cargo box. Here, the four hydraulic cylinders are installed vertically with their telescopic ends facing the frame below. Support seats matching the four hydraulic cylinders are installed on the vehicle frame at positions corresponding to the cylinders. The lifting and lowering of the detachable cargo box can also be achieved by controlling the extension and retraction of the four hydraulic cylinders.

[0038] The hydraulic pump 3 and its drive motor 4 are mounted on the vehicle frame 1, specifically at the front end of the frame. The oil supply end of the hydraulic pump 3 is connected to the oil supply ends of the four first hydraulic cylinders 9 through the pump oil pipeline. The solenoid valve assembly is connected to the pump oil pipeline. That is, the hydraulic pump 3 is connected to the four first hydraulic cylinders 9 through the solenoid valve assembly. The start, stop and power of the hydraulic pump 3 can be controlled by controlling the start and stop and the speed of the drive motor 4. The action of the four first hydraulic cylinders 9 can be controlled by controlling the opening and closing of the solenoid valve.

[0039] An attitude sensor 11 is installed at the bottom of the detachable carriage 2 to collect the carriage's attitude information. The attitude sensor 11 can be a tilt sensor or a gyroscope, capable of accurately collecting the carriage's tilt angle information. The attitude sensor sends the collected carriage tilt angle information to the controller 6.

[0040] The controller 6 is electrically connected to the drive motor 4 of the hydraulic pump 3 and the solenoid valve, respectively. It sends start / stop and speed commands to the drive motor 4, thereby controlling the start / stop and power of the hydraulic pump 3. The controller 6 also sends on / off commands to the solenoid valve assembly to control the connection / disconnection of the pump oil pipeline between the hydraulic pump 3 and any of the first hydraulic cylinders 9, thereby controlling the movement of the first hydraulic cylinders 9 to achieve the lifting and lowering control of the carriage. Furthermore, the controller 6 is electrically connected to the attitude sensor 11 to receive the carriage tilt angle information collected by the attitude sensor and determine whether the carriage is level based on the tilt angle information. When controlling the lifting and lowering of the carriage, the controller can adjust the lifting and lowering amplitude of the four first hydraulic cylinders 9 according to the levelness of the carriage, thus keeping the carriage level.

[0041] In one optional embodiment, the solenoid valve assembly includes a main solenoid valve 4 and four first sub-solenoid valves 7. The hydraulic pump 3 is first connected to the main solenoid valve 4 and then to each of the four first sub-solenoid valves 7. The four first sub-solenoid valves 7 are also connected to the four first hydraulic cylinders 9. Essentially, the hydraulic pump 3 and the main solenoid valve 4 are connected in series to form a main oil circuit, and each first sub-solenoid valve 7 and a first hydraulic cylinder 9 are connected in series to form a branch oil circuit. The four branch oil circuits are then connected in parallel and finally connected to the main oil circuit. This solenoid valve assembly can control the on / off state of the main oil circuit by controlling the opening and closing of the main solenoid valve 4. It can also achieve synchronous control of the four first hydraulic cylinders 9 by synchronously controlling the opening and closing of the four first sub-solenoid valves 7. Alternatively, the lifting and lowering actions of the four first hydraulic cylinders 9 can be controlled independently by controlling the opening and closing of the four first sub-solenoid valves 7. Combined with the tilt angle information detected by the attitude sensor 11, it can achieve precise control of the horizontal state of the carriage. Example 2

[0042] The difference between the detachable vehicle and hydraulic lifting system in this embodiment and Embodiment 1 is that the hydraulic lifting system further includes a lateral telescopic mechanism, comprising two second hydraulic cylinders 10. The two second hydraulic cylinders 10 are arranged laterally and respectively installed at the bottom of the two corners of the front end of the detachable vehicle body 2. Here, hollow crossbeams are installed on both sides of the bottom front end of the detachable vehicle body 2. The second hydraulic cylinders 10 are installed in the hollow crossbeams, and the mounting seats of the second hydraulic cylinders 10 are connected to the support seats that match the first hydraulic cylinder 9. By controlling the extension and retraction of the two second hydraulic cylinders 10, the distance between the two support seats at the front end of the vehicle body can be adjusted, thereby enabling the detachable vehicle body to adapt to vehicle frames of different sizes, increasing its applicability.

[0043] Accordingly, the solenoid valve assembly also includes a second sub-solenoid valve 10, and the hydraulic pump 3 is also connected to two second hydraulic cylinders 10 via the second sub-solenoid valve 8. Specifically, the hydraulic pump 3 is first connected to the main solenoid valve 4, then to the second sub-solenoid valve 8, and then to the two second hydraulic cylinders 10, which is equivalent to the second sub-solenoid valve 8 and the two second hydraulic cylinders 10 forming two parallel branch oil circuits. By controlling the opening and closing of the second sub-solenoid valve 8, the lateral extension and retraction of the two second hydraulic cylinders 10 can be controlled. Example 3

[0044] The difference between the detachable car and hydraulic lifting system in this embodiment and embodiments 1 and 2 is that the hydraulic lifting system also includes a remote controller. The remote controller is connected to the controller 6 via wireless communication (such as 4G). The user controls the operation of the four first hydraulic cylinders 9 and / or the second hydraulic cylinders 10 based on the remote controller.

[0045] Specifically, the remote control has multiple buttons, including buttons to control the start and stop of the drive motor 4, buttons to control the synchronous extension of the four first hydraulic cylinders 9, buttons to control the synchronous retraction of the four first hydraulic cylinders 9, buttons to control the independent operation of each of the four first hydraulic cylinders 9, and buttons to control the synchronous extension and retraction of the two second hydraulic cylinders 10. By operating these buttons, the remote control can send corresponding commands to the controller 6, such as controlling the start and stop of the motor, controlling the on / off state of the main solenoid valve 4, controlling the synchronous on / off state of the four first sub-solenoid valves 7, controlling the on / off state of any one of the first sub-solenoid valves 7, and controlling the on / off state of the second sub-solenoid valve 8. Users can control the raising and lowering of the carriage through simple button operations. Example 4

[0046] The difference between the detachable vehicle and hydraulic lifting system in this embodiment and embodiments 1-3 is that the hydraulic lifting system further includes a battery box 5. Specifically, the battery box 5 includes a battery module and a charging module. The battery module includes an energy storage battery or a power battery, and the charging module includes multiple charging units. The battery module is electrically connected to the drive motor 4 via a relay. The battery module is also electrically connected to the controller 6 via an inverter, and then to electrical components such as solenoid valves and attitude sensors to supply power to the relevant electrical components in the system. Here, the battery module uses a 72V battery that matches the drive motor, and the inverter is used to convert the 72V voltage output by the battery into a 24V voltage that matches the controller and solenoid valves.

[0047] Optionally, the hydraulic lifting system also includes a photovoltaic power generation module 12, which is installed on the top of the detachable carriage. The output end of the photovoltaic power generation module 12 is electrically connected to the charging unit of the battery module through an inverter. The inverter converts the voltage output by the photovoltaic power generation module 12 into a 72V voltage to charge the battery module, and uses photovoltaic power generation to ensure a stable power supply to other electrical components in the system.

[0048] Optionally, the charging end of the battery module is also electrically connected to the load power supply end 13 of the detachable vehicle via a high-voltage inverter. The high-voltage inverter converts the voltage output from the load power supply end (typically 318-720V) into a 72V voltage to charge the battery module.

[0049] Optionally, the charging end of the battery module is also electrically connected to the on-board starter battery 14 of the detachable vehicle via an inverter, which converts the voltage (typically 12V) output from the load power supply end to a 72V voltage to charge the battery module.

[0050] Optionally, the battery module's charging end is also connected to a 220V charging interface. When other charging methods fail, the battery module can be charged via AC power to ensure temporary power needs.

[0051] The battery box of this hydraulic lifting system can be equipped with multiple charging methods to ensure a stable power supply to the battery box.

[0052] It should be noted that in practical application scenarios, the solenoid valves, attitude sensors, hydraulic pumps, hydraulic cylinders, batteries, and other equipment in the detachable vehicle and its hydraulic lifting system of this utility model embodiment can all be existing equipment with corresponding functions and meeting the requirements, and will not be elaborated further here. Furthermore, other equipment or components can be installed in the hydraulic lifting system and the detachable vehicle, or the actual installation positions of each equipment or component can be adjusted to achieve the actual application or other functions of the hydraulic lifting system. For example, the solenoid valve can be a commonly used directional valve in existing hydraulic systems, and the controller can be a conventional PLC or microcontroller; furthermore, a correction support mechanism can be installed on the frame of the detachable vehicle to ensure precise docking between the detachable cargo box and the vehicle frame.

[0053] It should be noted that, depending on the implementation needs, the various components described in the embodiments of this utility model can be split into more components, or two or more components or parts of components can be combined into new components to achieve the purpose of the embodiments of this utility model.

[0054] The above description is only used to illustrate the technical solution of this utility model and is not intended to limit it. Any other modifications or equivalent substitutions made by those skilled in the art to the technical solution of this utility model, as long as they do not depart from the spirit and scope of the technical solution of this utility model, should be covered within the scope of the claims of this utility model.

Claims

1. A hydraulic lift system for a detachable vehicle, the detachable vehicle comprising a vehicle frame and a detachable vehicle body, characterized in that, The hydraulic lifting system includes: a lifting support mechanism comprising four first hydraulic cylinders, respectively installed on the outer sides of the vehicle frame near the four corners, or on the outer sides of the four corners of the detachable cargo box; an attitude sensor, installed on the vehicle frame or the bottom of the detachable cargo box; a hydraulic pump, installed on the frame; a solenoid valve assembly, the hydraulic pump being connected to the four first hydraulic cylinders via the solenoid valve assembly; and a controller, electrically connected to the attitude sensor, the drive motor of the hydraulic pump, and the solenoid valves; the attitude sensor collects the tilt angle information of the cargo box and sends it to the controller, the controller sends start / stop and speed commands to the drive motor, and the controller also sends a command to the solenoid valve assembly to connect the hydraulic pump to any of the first hydraulic cylinders.

2. A hydraulic lift system for a removable vehicle as defined in claim 1, wherein, The solenoid valve assembly includes four first sub-solecular valves, and the hydraulic pumps are respectively connected to the four hydraulic pumps through the first and fourth sub-solecular valves.

3. A hydraulic lift system for a removable vehicle as defined in claim 2, wherein, The solenoid valve assembly also includes a main solenoid valve, and the hydraulic pump is connected to the main solenoid valve and then connected to four sub-sole solenoid valves respectively.

4. A hydraulic lift system for a removable vehicle as defined in claim 2, wherein, The hydraulic lifting system also includes a lateral telescopic mechanism, comprising two second hydraulic cylinders, which are respectively installed at the bottom of the two corners of the front end of the detachable carriage; the solenoid valve assembly also includes a second sub-solenoid valve, and the hydraulic pump is also connected to the two second hydraulic cylinders through the second sub-solenoid valve.

5. A hydraulic lift system for a removable vehicle as defined in claim 2, wherein, The hydraulic lifting system also includes a remote controller, which is wirelessly connected to the controller and is used to send commands to the controller to control the synchronous on / off of the four first sub-solenoid valves or to control the on / off of any one of the first sub-solenoid valves.

6. A hydraulic lifting system for a detachable vehicle according to any one of claims 1-5, characterized in that, The hydraulic lifting system also includes a battery module, which is electrically connected to the drive motor via a relay. The battery module is also electrically connected to the controller via an inverter, and then to the solenoid valve and attitude sensor.

7. A hydraulic lifting system for a detachable vehicle according to claim 6, characterized in that, It also includes photovoltaic power generation components, which are installed on the top of the detachable compartment. The output of the photovoltaic power generation components is electrically connected to the charging end of the battery module through an inverter.

8. A hydraulic lifting system for a detachable vehicle according to claim 6, characterized in that, The charging end of the battery module is also electrically connected to the load power supply end of the detachable vehicle and / or to the on-board starter battery via a high-voltage inverter.

9. A hydraulic lifting system for a detachable vehicle according to claim 6, characterized in that, The battery module's charging end is also connected to an AC charging interface.

10. A detachable vehicle, characterized in that, The detachable vehicle includes the hydraulic lifting system according to any one of claims 1-9.

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