Electro-hydraulic driving type horizontal jack

Abstract

The invention relates to the technical field of jack manufacturing, in particular to an electro-hydraulic driving type horizontal jack. The crane boom and the power unit both take the rack as a mounting base, and the power unit is hinged to the crane boom. The instruction sending assembly is provided with an independent power supply and sends an instruction signal to the control mainboard through a wireless communication protocol. And the control mainboard and the power unit are matched and are electrically connected with the power supply unit. The control mainboard has a standby response state and an instruction execution state; when a lifting / descending control signal of the instruction sending assembly is received, the control mainboard is switched from the standby response state to the instruction execution state; and when the power unit completes the lifting action or does not receive a new instruction overtime, returning to the standby response state from the instruction execution state. Due to the wireless control design, the traditional physical cable connection design is abandoned; and by means of a function locking mechanism of the instruction sending assembly, the mistaken touch risk in a non-operation state is effectively avoided, and the energy consumption of an independent power supply is reduced.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of jack manufacturing, in particular to an electro-hydraulic drive type horizontal jack. BACKGROUND

[0002] As a key equipment in the scene of automobile maintenance and heavy lifting, the horizontal hydraulic jack is widely used in industrial production and daily maintenance due to its compact structure and strong lifting force.

[0003] With the diversification of maintenance operation scenes and the improvement of operation convenience and running safety requirements, the technical limitations of traditional horizontal hydraulic jacks gradually become prominent, and it is difficult to meet the current actual use requirements. The application defects of the traditional horizontal hydraulic jack mainly lie in the following aspects: 1) The current mainstream horizontal hydraulic jack relies on wired control. The physical cable not only increases the difficulty of storage and is easy to be interrupted by pulling and wear, but also limits the activity range of the operator. A few products that try to use wireless control have not built a perfect control system. There is no reasonable design to enable the action control function through specific operation, and there is no effective mechanism to close the function and stop the transmission of instructions through corresponding operation, which is difficult to meet the practicality and reliability requirements of wireless control. 2) The existing products mostly use simple relays or basic single-chip microcomputers, which can only control the start and stop of the motor and the on-off of the electromagnetic valve independently, completely ignoring the necessity of linkage between the two under different working conditions. For example, when lifting, if the electromagnetic valve is not blocked synchronously after the motor is started, it will inevitably lead to hydraulic oil backflow and insufficient lifting force. When descending, if only the electromagnetic valve is turned on without synchronously stopping the motor, it will inevitably cause the motor to idle and consume energy, and even cause the heavy object to drop suddenly due to pressure imbalance, which seriously affects the work efficiency and safety.

[0004] In summary, the defects of the traditional horizontal hydraulic jack in the control mode and the control of the core components have become the key to restricting its adaptation to modern operation needs, and need to be solved by technical personnel. SUMMARY

[0005] The purpose of the present application is to provide an electro-hydraulic drive type horizontal jack, which aims to solve the problems of inconvenient wired control and the inability of the control unit to realize the linkage between the motor and the electromagnetic valve in the existing design, resulting in low work efficiency and poor safety.

[0006] The present application relates to an electro-hydraulic drive type horizontal jack, which comprises a rack, a lifting arm, a power unit, a wireless control unit, a control mainboard and a power supply unit. The power unit and the lifting arm are hinged, and both are installed on the rack. The power unit is an electro-hydraulic drive structure, which is used to drive the lifting arm to perform lifting motion. The wireless control unit comprises an instruction sending component; the instruction sending component is provided with an independent power supply and sends an instruction signal to the control mainboard through a wireless communication protocol; The instruction sending component has an unlocking and locking trigger mechanism for action control function: when a first operation is triggered, the instruction sending component unlocks the action control function; when a second operation is triggered, the instruction sending component locks the action control function. The control mainboard and the power unit are matched and electrically connected with the power supply unit. The control mainboard has a standby response state and an instruction execution state. When the control mainboard receives a lifting control signal from the instruction sending component, it switches from the standby response state to the instruction execution state and controls the power unit to drive the jib to lift. When the control mainboard receives a lowering control signal from the instruction sending component, it switches from the standby response state to the instruction execution state and controls the power unit to drive the jib to lower. When the control mainboard controls the power unit to complete the lifting and lowering action, or when it is in the instruction execution state and no new instruction is received within a timeout period, it returns to the standby response state from the instruction execution state.

[0007] As a further improvement of the disclosed technical solution, the power unit comprises a pump station, a motor and a solenoid valve. The pump station is installed on a rack; the motor and the solenoid valve are matched with the pump station and are powered by the power supply unit. When the control mainboard is in the instruction execution state and responds to the lifting control signal, it outputs a start signal to the motor and a close signal to the solenoid valve; when it responds to the lowering control signal, it outputs a stop signal to the motor and an open signal to the solenoid valve. The motor normally remains in low-power standby mode, drives the pump station to work when receiving the start signal, and returns to standby mode when receiving the stop signal. The solenoid valve blocks the hydraulic circuit oil return of the pump station when receiving the close signal and conducts the hydraulic circuit oil return of the pump station when receiving the open signal.

[0008] As a further improvement of the disclosed technical solution, the electro-hydraulic drive type horizontal jack further comprises a joystick; the joystick is movably connected to the rack through a rotating or folding structure and is used to push or adjust the overall placement position of the rack, and it serves as the installation and fixing base of the power supply unit.

[0009] Of course, as another modification design of the above technical solution, the power supply unit adopts a hidden structure design and is embedded in the internal preset installation cavity of the rack.

[0010] As a further improvement of the disclosed technical solution, the power supply mode of the power supply unit includes main power supply, external power supply and external discharge port of the new energy vehicle.

[0011] As a further improvement of the disclosed technical solution, the instruction sending component is integrated with a power key, an UP key and a DOWN key; the first operation is triggered by pressing the power key, the second operation is triggered by pressing the power key again, and the action control operation is triggered by pressing the UP key or the DOWN key; when the UP key is pressed, the instruction sending component sends the lifting control signal; when the DOWN key is pressed, the instruction sending component sends the descending control signal.

[0012] As a further improvement of the disclosed technical solution, the instruction sending component further includes a power detection unit and a status indicator; the power detection unit monitors the remaining power of the self-provided power supply in real time, and when the remaining power is lower than a preset threshold, the power detection unit triggers the status indicator to flash at a preset frequency.

[0013] As a further improvement of the disclosed technical solution, when the control mainboard is in the standby response state, after receiving the lifting control signal or the descending control signal, the two are encoded and verified, and only after the verification is passed, the control mainboard is switched to the instruction execution state and outputs the start signal, the close signal, the stop signal or the open signal.

[0014] As a further improvement of the disclosed technical solution, the encoding verification includes signal frequency matching verification and preset encryption rule comparison: the control mainboard first verifies whether the wireless frequency of the lifting control signal or the descending control signal is consistent with the preset working frequency, and then compares whether the encryption code built-in the lifting control signal or the descending control signal is consistent with the code rule pre-stored in the control mainboard after the frequency matching; when both are satisfied, it is determined that the verification is passed, otherwise it is determined that the verification fails and the lifting control signal and the descending control signal are ignored, and the standby response state is maintained.

[0015] As a further improvement of the disclosed technical solution, after the instruction sending component is switched to the function unlocking state, a ready signal is sent to the control mainboard; after the control mainboard receives the ready signal, if the lifting control signal and the descending control signal are not received within a preset time, the control mainboard returns to the standby response state from the standby instruction state, outputs a stop signal to the motor, and feeds back an overtime prompt signal to the instruction sending component.

[0016] As a further improvement of the disclosed technical solution, the lifting arm is provided with a displacement detection sensor; the displacement detection sensor detects the lifting height and the lowering height of the lifting arm in real time, and transmits the detected height data to the control mainboard; when the lifting height of the lifting arm reaches the preset highest limit or the lowering height reaches the preset lowest limit, the control mainboard returns from the instruction execution state to the standby response state, outputs a stop signal to the motor, and outputs a corresponding control signal to the electromagnetic valve.

[0017] As a further improvement of the disclosed technical solution, the pump station is provided with a pressure detection unit; the pressure detection unit monitors the pressure value in the hydraulic circuit in real time, and transmits the pressure data to the control mainboard; when the pressure value in the hydraulic circuit exceeds the preset safety pressure threshold, the control mainboard returns from the instruction execution state to the standby response state in real time, outputs a stop signal to the motor, and controls the electromagnetic valve to open the hydraulic circuit to return oil; when the pressure value in the hydraulic circuit returns to the safety range, the control mainboard returns to the standby response state, so as to respond to the lifting control signal or the lowering control signal again and switch to the instruction execution state.

[0018] In practical application, the electro-hydraulic drive type horizontal jack disclosed in the present application can at least achieve the following beneficial technical effects, specifically: 1) The instruction sending assembly transmits instructions to the control mainboard through a wireless protocol, without the need for physical cable connection, and can be flexibly adapted to various operation scenes such as narrow space, dangerous area around heavy objects, long-distance observation of lifting state, etc., greatly improving operation convenience and safety. Furthermore, the instruction sending assembly can be switched from the function-locked state to the function-unlocked state through a first operation, sequentially enabling the action control function and sending the lifting or lowering instruction; after the operation is completed, the action control function is locked, the signal transmission is stopped, and the function-locked state is returned. In this way, the whole process of instruction transmission can be accurately controlled, the false touch in non-operation state is avoided, and the energy consumption of the independent power supply of the instruction sending assembly is reduced; 2) The control mainboard is based on the switching logic of "standby response state-instruction execution state", and responds to the lifting control signal or the lowering control signal sent by the instruction sending assembly in real time, and the response logic is highly adapted to the power unit: when the lifting control signal is received, the control mainboard switches from the standby response state to the instruction execution state, simultaneously outputs a start signal to the motor and a close signal to the electromagnetic valve, so that on the one hand, the driving motor drives the pump station to continuously work to provide sufficient driving force, and on the other hand, the hydraulic circuit is blocked to ensure that the power is transmitted without loss, realizing stable lifting of the heavy object; when the lowering control signal is received, the control mainboard also switches from the standby response state to the instruction execution state, simultaneously outputs a stop signal to the motor and an open signal to the electromagnetic valve, which not only realizes smooth pressure release through the electromagnetic valve, but also avoids the invalid energy consumption caused by the motor idling, ensuring the slow and smooth descent of the heavy object. Attached Figure Description

[0019] To more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0020] Figure 1 This is a three-dimensional schematic diagram of the electro-hydraulic driven horizontal jack disclosed in this invention (with part of the power unit exposed).

[0021] Figure 2 This is a three-dimensional schematic diagram of the electro-hydraulic driven horizontal jack disclosed in this invention from another perspective.

[0022] Figure 3 yes Figure 1 A magnified view of part of I.

[0023] Figure 4 This is a flowchart of the motion control of the electro-hydraulic driven horizontal jack disclosed in this invention.

[0024] Figure 5 This is an electrical schematic diagram of the instruction sending component disclosed in this invention.

[0025] 1-Frame; 2-Lifting boom; 3-Power unit; 4-Wireless control unit; 41-Command transmission component; 411-Power button; 412-UP button; 413-DOWN button; 414-Status indicator light; 5-Power supply unit; 6-Control joystick. Detailed Implementation

[0026] The technical solution of the present invention will be further described in detail below with reference to specific embodiments and accompanying drawings. Figure 1 , Figure 2 Two different perspectives of the electro-hydraulic driven horizontal jack disclosed in this invention are shown. It can be seen that it is mainly composed of several parts, including frame 1, lifting arm 2, power unit 3, wireless control unit 4, control motherboard (not shown in the figure), power supply unit 5 and control lever 6. These parts work together to form a complete working system, and finally realize the safe lifting and lowering of heavy objects. The power unit 3 is hinged with the lifting arm 2, and both are installed based on the frame 1; the lifting arm 2 is the core executive component for directly bearing the weight and performing the lifting and lowering actions, and the driving force required for the action is completely provided by the power unit 3; the power unit 3 is an electro-hydraulic driving structure, which is used to convert the electric energy and hydraulic energy into mechanical kinetic energy, and then drive the lifting arm 2 to perform the lifting and lowering movements; the wireless control unit 4 undertakes the control hub function, and realizes the touchless instruction control through the wireless transmission mode, which effectively improves the operation flexibility; the power supply unit 5 provides continuous and stable electric energy support for the power unit 3, and the control mainboard and the power unit 3 are electrically connected with the power supply unit 5; the joystick 6 is responsible for the movement function of the horizontal jack, which further optimizes the use convenience of the equipment.

[0027] In addition, the control mainboard is fixed at the preset installation position of the frame 1, and is the core component for signal processing and instruction execution, and is electrically connected with the power unit 3, and has two working modes of standby response state and instruction execution state, and the specific working logic is: when the control mainboard receives the lifting control signal from the wireless control unit 4, the control mainboard switches from the standby response state to the instruction execution state, and controls the power unit 3 to drive the lifting arm 2 to lift; when the control mainboard receives the lowering control signal, the control mainboard also switches to the instruction execution state, and controls the power unit 3 to drive the lifting arm 2 to lower; when the control mainboard controls the power unit 3 to complete the lifting and lowering actions, or in the instruction execution state, no new instruction is received within a timeout, the control mainboard returns to the standby response state from the instruction execution state. The specific structure and working principle of the power unit 3 are as follows: including a motor, a pump station, a solenoid valve and a hydraulic cylinder, and each component cooperates to form a complete power transmission link. Among them, the pump station is fixedly installed on the frame 1, the oil inlet end of the pump station is communicated with the hydraulic oil tank (not shown in the figure), and the oil outlet end of the pump station is connected to the rodless cavity of the hydraulic cylinder through the high-pressure oil pipe, and the pump station is mainly used to deliver high-pressure hydraulic oil to the hydraulic cylinder; the motor and the pump station are drivingly connected, and the motor always keeps a low-power standby state under normal conditions; the motor and the solenoid valve are powered by the power supply unit 5. When the motor receives the start signal, the motor drives the pump station to complete the oil suction and oil compression action, and efficiently transfers the mechanical energy to the hydraulic system; the solenoid valve is connected in series in the hydraulic circuit between the pump station and the hydraulic cylinder, the oil inlet of the solenoid valve is communicated with the oil outlet of the pump station, the working oil ports of the solenoid valve are connected with the rodless cavity and the rod cavity of the hydraulic cylinder respectively, and the return oil port of the solenoid valve is connected with the hydraulic oil tank, by switching the working state of the solenoid valve, the on-off direction and the return oil condition of the hydraulic circuit can be accurately controlled; the piston rod of the hydraulic cylinder is directly drivingly connected with the lifting arm 2, the hydraulic energy of the high-pressure hydraulic oil is converted into mechanical kinetic energy, and the lifting arm 2 is rotated around the hinge point, and finally the lifting or lowering of the weight is realized. The design and operation mechanism of the wireless control unit 4 is as follows: the wireless control unit 4 comprises an instruction sending component 41. The instruction sending component 41 is provided with an independent power supply, and signal transmission is achieved between the instruction sending component 41 and the control mainboard through a wireless protocol (such as Bluetooth, infrared, radio frequency, etc.). The instruction sending component 41 sends an instruction signal to the control mainboard through a wireless communication protocol. In this way, the operator can complete the operation of the horizontal jack in a narrow space, a dangerous area around heavy objects, or a remote observation point, greatly improving the operation flexibility and safety.

[0028] As shown in Figure 3 , the instruction sending component 41 is simultaneously integrated with a power key 411, an UP key 412, a DOWN key 413, a state indicator 414, and a power detection unit (not shown in the figure). In order to ensure operation safety and energy saving, the instruction sending component 41 has an unlocking and locking trigger mechanism for action control function, and mode switching can be realized through specific operation, that is, as shown in Figure 5 , pressing the power key 411 triggers a first operation, and the instruction sending component 41 unlocks the action control function. At this time, the state indicator 414 is always on, indicating that the horizontal jack has entered a controllable state. Pressing the UP key 412 (single or long press) or the DOWN key 413 (single or long press) triggers an action control operation, and the instruction sending component 41 sends a lifting control signal or a descending control signal to the control mainboard, respectively. Pressing the power key 411 again triggers a second operation, and the instruction sending component 41 locks the action control function, and the state indicator 414 is turned off. This design not only effectively avoids the risk of accidental touch in a non-working state, but also greatly reduces the energy consumption of the independent power supply of the instruction sending component 41, prolonging the use time of the independent power supply. Furthermore, the power detection unit is used to monitor the remaining power of the independent power supply of the instruction sending component 41 in real time. The device presets a power warning threshold for the independent power supply. When the remaining power of the independent power supply is lower than the power warning threshold, the power detection unit triggers the state indicator 414 to flash at a preset frequency, reminding the operator to supplement the power of the instruction sending component 41 in time to prevent interruption of instruction transmission. In terms of security verification and state management of the control mainboard, as a further optimization of the above technical solution, after receiving the instruction signal sent by the instruction sending component 41, the control mainboard first performs encoding verification on the instruction signal. Only after the verification is passed, the control mainboard will switch from the standby response state to the instruction execution state and output the corresponding control instruction. Specifically, the encoding verification includes two links of signal frequency matching verification and preset encryption rule comparison: the control mainboard first confirms whether the wireless frequency of the received signal is consistent with the preset working frequency. On the basis of frequency matching, the control mainboard compares the encryption code in the signal with the pre-stored encoding rule through the built-in decryption module. Only when both of them meet the requirements, it is determined that the verification is passed. If the verification fails, the control mainboard will ignore the signal and remain in the standby response state, effectively resisting unauthorized signal interference and ensuring the safe operation of the horizontal jack. As shown in Figure 4 The action control flow of the horizontal jack forms a complete closed-loop control from instruction initiation, signal processing, to action execution and state feedback, ensuring accurate and controllable action. When the control mainboard enters the instruction execution state, the response logic of the control mainboard is adapted to the working characteristics of the power unit 3: when the control mainboard receives the lifting control signal, the control mainboard synchronously outputs the start signal to the motor and the close signal to the electromagnetic valve. At this time, the motor drives the pump station to work continuously, and the electromagnetic valve blocks the hydraulic circuit oil return, ensuring that the power is transmitted without loss, realizing stable lifting of the lifting arm 2. When the control mainboard receives the descending control signal, the control mainboard synchronously outputs the stop signal to the motor and the open signal to the electromagnetic valve. The motor stop can avoid invalid energy consumption, and the electromagnetic valve conducting the hydraulic circuit oil return can realize stable pressure release, ensuring the slow descent of the lifting arm 2 and the stability of the lifting process. To further enhance safety, a displacement detection sensor (not shown in the figure) is installed on the lifting boom 2. The displacement detection sensor is fixed to the hinge joint between the lifting boom 2 and the frame 1 via a bracket, with its detection end in contact with the movable arm of the lifting boom 2. The displacement detection sensor can detect the lifting height and lowering height of the lifting boom 2 in real time and transmit the detected height data to the control mainboard. It is known that the horizontal jack has preset maximum lifting limit and minimum lowering limit. When the detected height reaches the preset maximum lifting limit, the control mainboard outputs a stop signal to the motor and keeps the solenoid valve closed to maintain the lifting height; when the detected height reaches the preset minimum lowering limit, the control mainboard outputs a close signal to the solenoid valve and simultaneously outputs a prohibition signal to the motor to prevent mechanical damage or safety accidents to the horizontal jack due to excessive movement.

[0029] Furthermore, the pump station is also equipped with a pressure detection unit (not shown in the figure). This unit is integrated into the hydraulic outlet of the pump station and connected to the hydraulic circuit. It monitors the pressure value in the hydraulic circuit in real time and transmits the pressure data to the control mainboard. The horizontal jack has a preset safety pressure threshold. When the pressure value in the hydraulic circuit exceeds the safety threshold, the control mainboard immediately returns from the command execution state to the standby response state. The control mainboard outputs a stop signal to the motor and simultaneously controls the solenoid valve to open the hydraulic circuit return oil to relieve pressure. When the pressure value in the hydraulic circuit returns to the safe range, the control mainboard returns to the standby response state to respond to the lifting or lowering control signal and switch back to the command execution state, preventing malfunctions such as pipe rupture and seal damage due to excessive pressure in the hydraulic circuit. The control lever 6 is designed to be movably connected to the frame 1 via a rotating hinge or folding buckle structure. In its natural state, the control lever 6 remains close to the frame 1, effectively reducing the space occupied by the horizontal jack and facilitating equipment transportation. When in use, the operator unfolds the control lever 6 to a set angle, making it convenient for the operator to grip and push or adjust the placement of the frame 1, thus improving the flexibility of the horizontal jack in the work site.

[0030] It should also be noted that the control lever 6 can serve as the mounting base for the power supply unit 5 (such as a lithium battery pack), and the power supply unit 5 is fixed to the control lever 6 by a snap-fit ​​mechanism to optimize the overall structural layout of the horizontal jack. As a supplementary solution to the above integrated design, the power supply unit 5 can also adopt a concealed structure, embedded in a pre-set mounting cavity on the side of the frame 1. The size of the mounting cavity is customized according to the specifications of the power supply unit 5, and the outside of the cavity is equipped with a removable cover plate. The cover plate adopts a threaded connection or quick-lock design to integrate with the frame 1, which can meet the emergency replacement needs of the power supply unit 5 and also protect the power supply unit 5.

[0031] In terms of power supply, the power supply unit 5 supports multiple modes, including main power supply, external mains power supply and new energy vehicle external discharge port power supply. Among them, the main power supply is a rechargeable lithium battery pack, which is fixed on the joystick 6 or embedded in the rack 1, and provides independent power supply support for the horizontal jack moving operation; the external mains power supply is connected to the mains through the power cord, which is suitable for fixed places such as repair workshops, and can support long-term continuous operation of the horizontal jack; the new energy vehicle external discharge port power supply is connected to the discharge port of the new energy vehicle through a special adapter line, which is suitable for vehicle repair operations in outdoor scenes without mains power. Multiple power supply modes are seamlessly switched through a power supply switching module to ensure that the horizontal jack can obtain stable power in different operating environments, greatly improving the environmental adaptability of the horizontal jack. In summary, the present application integrates and cooperatively designs the core components to build a horizontal hydraulic jack system that integrates wireless control, multiple safety protection, flexible movement and multi-scene power supply. The cooperative operation of the wireless control unit 4 and the power unit 3 realizes contactless control, the state switching logic of the control board ensures the safety and reliability of command execution, multiple safety mechanisms ensure the reliability of the operation process, and the optimized structure and power supply design improves the scene adaptation ability of the horizontal jack, effectively solving the technical pain points of traditional horizontal hydraulic jacks.

[0032] The above description of disclosed embodiments enables those skilled in the art to implement or use the present application. Various modifications to these embodiments will be apparent to those skilled in the art, and the general principles defined herein can be implemented in other embodiments without departing from the spirit or scope of the present application. Therefore, the present application will not be limited to the embodiments shown herein, but will conform to the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. An electro-hydraulic driven horizontal jack, characterized in that, It includes a frame, lifting boom, power unit, wireless control unit, control motherboard, and power supply unit; The power unit is hinged to the lifting boom, and both are mounted on the frame; the power unit is an electro-hydraulic drive structure used to drive the lifting boom to perform lifting movements. The wireless control unit includes a command transmission component; the command transmission component has its own independent power supply and sends command signals to the control motherboard through a wireless communication protocol. The instruction sending component has an unlocking and locking triggering mechanism for the action control function: when the first operation is triggered, the instruction sending component unlocks the action control function; when the second operation is triggered, the instruction sending component locks the action control function. The control motherboard and the power unit are matched, and both are electrically connected to the power supply unit; The control motherboard has a standby response state and an instruction execution state: When the control motherboard receives a lifting control signal from the command sending component, it switches from the standby response state to the command execution state and controls the power unit to drive the lifting arm to lift. When the control motherboard receives a descent control signal from the instruction sending component, it switches from the standby response state to the instruction execution state and controls the power unit to drive the crane arm to descend. When the control motherboard finishes controlling the power unit to perform the lifting action, or when no new instruction is received within the timeout period in the instruction execution state, it returns from the instruction execution state to the standby response state.

2. The electro-hydraulic driven horizontal jack according to claim 1, characterized in that, The power unit includes a pump station, a motor, and a solenoid valve; The pumping station is installed on the frame; the motor and the solenoid valve are both equipped with the pumping station and are powered by the power supply unit. When the control board is in command execution state, it outputs a start signal to the motor and a close signal to the solenoid valve in response to the lifting control signal; and it outputs a stop signal to the motor and an open signal to the solenoid valve in response to the lowering control signal. The motor normally maintains a low-power standby mode, drives the pump station to perform work when it receives a start signal, and returns to standby mode when it receives a stop signal. When the solenoid valve receives a closing signal, it blocks the return oil flow of the hydraulic circuit of the pump station; when it receives an opening signal, it opens the return oil flow of the hydraulic circuit of the pump station.

3. The electro-hydraulic driven horizontal jack according to claim 2, characterized in that, It also includes a joystick; the joystick is movably connected to the frame via a rotating or folding structure, used to push or adjust the overall placement of the frame, and serves as the mounting and fixing base for the power supply unit.

4. The electro-hydraulic driven horizontal jack according to claim 2, characterized in that, The power supply unit adopts a concealed structure design and is embedded in a pre-set mounting cavity inside the rack.

5. The electro-hydraulic driven horizontal jack according to any one of claims 3-4, characterized in that, The power supply unit is powered by the main power supply, the external mains power supply, and the external discharge port provided by the new energy vehicle.

6. The electro-hydraulic driven horizontal jack according to claim 2, characterized in that, The command sending component integrates a power button, an UP button, and a DOWN button; pressing the power button triggers a first operation, pressing the power button again triggers a second operation, and pressing the UP button or the DOWN button triggers an action control operation; when the UP button is pressed, the command sending component sends a lifting control signal; when the DOWN button is pressed, the command sending component sends a lowering control signal.

7. The electro-hydraulic driven horizontal jack according to claim 6, characterized in that, The instruction sending component also includes a power detection unit and a status indicator light; the power detection unit monitors the remaining power of the built-in power supply in real time, and when the remaining power is lower than a preset threshold, the power detection unit triggers the status indicator light to flash at a preset frequency.

8. The electro-hydraulic driven horizontal jack according to claim 2, characterized in that, When the control motherboard is in standby response state, it receives a lift control signal or a descent control signal, encodes and verifies both, and only switches to the instruction execution state after the verification is successful, and outputs a start signal, a stop signal, a stop signal or an open signal.

9. The electro-hydraulic driven horizontal jack according to claim 8, characterized in that, The encoding verification includes signal frequency matching verification and preset encryption rule comparison: The control motherboard first verifies whether the wireless frequency of the lift control signal or the fall control signal is consistent with the preset operating frequency. After frequency matching, it compares whether the encryption code built into the lift control signal or the fall control signal matches the encoding rules pre-stored in the control motherboard. If both are satisfied, the verification is deemed successful; otherwise, the verification is deemed unsuccessful and the lift control signal and the fall control signal are ignored, maintaining a standby response state.

10. The electro-hydraulic driven horizontal jack according to claim 2, characterized in that, After the instruction sending component switches to the function unlocked state, it sends a ready signal to the control motherboard. After receiving the ready signal, if the control motherboard does not receive the lifting control signal or the lowering control signal within a preset time, it returns from the waiting instruction state to the standby response state, outputs a stop signal to the motor, and simultaneously sends a timeout prompt signal back to the instruction sending component.

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