A control system

Abstract

The present application discloses a control system. The system includes: a power assembly, a first input end of the power assembly is connected to a system oil tank, a first output end of the power assembly is connected to an oil inlet of a steering device, a second input end of the power assembly is connected to a system oil tank, and a second output end of the power assembly is connected to an oil inlet of a lifting device; a steering device, an oil return port of the steering device is connected to a system oil tank; a lifting device, an oil return port of the lifting device is connected to a system oil tank; and a first hydraulic lifting circuit, connecting the second output end of the power assembly and the system oil tank. Through the embodiments of the present application, it is possible to provide power for the steering and lifting of a vehicle through a power assembly at the same time, effectively avoiding the problems of the power assembly occupying more internal space of the vehicle, the high manufacturing cost of the vehicle, and the heavy weight of the vehicle, and it is also possible to achieve the decoupling of the steering and lifting of the vehicle.

Description

Technical Field

[0001] The present application belongs to the field of new energy vehicles, and in particular, relates to a control system. Background Art

[0002] With the continuous advancement of science and technology and the rapid development of new energy technologies, electric vehicles are gradually integrated into people's production and life. Among them, electric trucks have significant advantages over traditional fuel trucks in terms of operating costs, driving range and intelligent management.

[0003] In the related art, electric trucks can realize functions such as steering and lifting. Moreover, the steering system and lifting system used to realize the steering and lifting functions are independent of each other. That is, the steering system and the lifting system each use independent power motors to provide power for the steering and lifting of the vehicle.

[0004] However, deploying a power motor for each of the steering system and the lifting system will take up more space inside the vehicle, and will also lead to problems such as high vehicle manufacturing costs and heavy vehicle weight. Therefore, how to simplify the layout, save costs, and reduce vehicle weight has become a technical problem that relevant technicians need to solve urgently. Summary of the invention

[0005] The embodiment of the present application provides a control system that can simplify the vehicle hardware structure layout, save costs, and reduce vehicle weight.

[0006] In a first aspect, an embodiment of the present application provides a control system, comprising: a power assembly, a first input end of the power assembly is connected to a system oil tank, a first output end of the power assembly is connected to an oil inlet of a steering device, a second input end of the power assembly is connected to the system oil tank, and a second output end of the power assembly is connected to an oil inlet of a lifting device; a steering device, an oil return port of the steering device is connected to the system oil tank; a lifting device, an oil return port of the lifting device is connected to the system oil tank; a first hydraulic lifting circuit, connecting the second output end of the power assembly and the system oil tank, and being used for returning the hydraulic oil output from the second output end of the power assembly to the system oil tank when the steering device is in a working state and the lifting device is in a non-working state.

[0007] In one embodiment, the first hydraulic lifting circuit includes: a first switch assembly, one end of the first switch assembly is connected to the second output end of the power assembly, and the other end of the first switch assembly is connected to the system oil tank; when the steering device is in a working state and the lifting device is in a non-working state, the first switch assembly is in an on state, and when the lifting device is in a non-working state, the first switch assembly is in an off state.

[0008] In one embodiment, the control system also includes: a second hydraulic lifting circuit, a first end of the second hydraulic lifting circuit is connected to the oil inlet of the lifting device, and a second end of the second hydraulic lifting circuit is connected to the system oil tank; when the lifting device is in a descending working state and the steering device is in a non-working state, part of the hydraulic oil output from the second output end of the power component is returned to the system oil tank.

[0009] In one embodiment, the second hydraulic lifting circuit includes: a second switch assembly, one end of the second switch assembly is connected to the oil inlet of the lifting device, and the other end of the second switch assembly is connected to the system oil tank; when the lifting device is in a descending working state and the steering device is in a non-working state, the second switch assembly is in an on state, and when the lifting device is in an ascending working state and the steering device is in a non-working state, the second switch assembly is in an off state.

[0010] In one embodiment, the power assembly includes: a motor, the motor is respectively connected to a steering pump and a lifting pump; one end of the steering pump is connected to a system oil tank, and the other end of the steering pump is connected to an oil inlet of a steering device; one end of the lifting pump is connected to the system oil tank, and the other end of the lifting pump is connected to an oil inlet of a lifting device.

[0011] In one embodiment, the power assembly also includes a clutch, one end of the clutch is connected to the motor, and the other end of the clutch is connected to the lift pump.

[0012] In one embodiment, the system oil tank includes a steering oil tank and a lifting oil tank; the steering oil tank is respectively connected to the first input end of the power assembly and the oil return port of the steering device; the lifting oil tank is respectively connected to the second input end of the power assembly, the oil return port of the lifting device, and the first hydraulic lifting circuit.

[0013] In one embodiment, the control system also includes: a controller, which is connected to the first switch assembly, the steering device and the lifting device, and is used to control the first switch device to be turned on when a turning signal from the steering device is received but a lifting signal from the lifting device is not received, the lifting signal is used to indicate that the lifting device is in a working state, and the turning signal is used to indicate that the steering device is in a working state.

[0014] In one embodiment, the controller is also connected to the second switch component, and is used to control the second switch component to be cut off when a rising signal of the lifting device is received but a turning signal is not received; and to control the second switch component to be turned on when a descending signal of the lifting device is received but a turning signal is not received.

[0015] The control system of the embodiment of the present application connects the first input end and the second input end of the power assembly to the system oil tank, the first output end to the steering device, and the second output end to the lifting device, so as to provide power for the steering and lifting of the vehicle through one power assembly at the same time, effectively avoiding the problems of the power assembly occupying more internal space of the vehicle, high vehicle manufacturing cost, and heavy vehicle weight. In addition, by setting a first hydraulic lifting circuit between the lifting device and the second output end of the power assembly, the steering and lifting of the vehicle are decoupled, and the normal operation of the integrated control system for steering and lifting is achieved. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] In order to more clearly illustrate the technical solution of the embodiments of the present application, the following is a brief introduction to the drawings required for use in the embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without any creative work.

[0017] Figure 1 A schematic diagram of the architecture of a control system provided by an embodiment of the present application is shown;

[0018] Figure 2 A schematic diagram of the architecture of another control system provided by an embodiment of the present application is shown;

[0019] Figure 3 A schematic diagram of the architecture of another control system provided by an embodiment of the present application is shown. DETAILED DESCRIPTION

[0020] The features and exemplary embodiments of various aspects of the present application will be described in detail below. In order to make the purpose, technical solutions and advantages of the present application clearer, the present application will be further described in detail below in conjunction with the accompanying drawings and specific embodiments. It should be understood that the specific embodiments described herein are only intended to explain the present application, rather than to limit the present application. For those skilled in the art, the present application can be implemented without the need for some of these specific details. The following description of the embodiments is only to provide a better understanding of the present application by illustrating the examples of the present application.

[0021] It should be noted that, in this article, relational terms such as first and second, etc. are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device. In the absence of further restrictions, the elements defined by the statement "include..." do not exclude the presence of other identical elements in the process, method, article or device including the elements.

[0022] As environmental pollution becomes increasingly prominent, people's environmental awareness is gradually improving, and more and more consumers are beginning to pay attention to new energy vehicles. Among them, electric vehicles, as a type of new energy vehicles, have significant advantages in operating costs, driving range, and intelligent management, so electric vehicles have become a better choice for consumers.

[0023] Electric vehicles include vehicles involved in various fields of people's daily production and life. For example, in the field of logistics and transportation, electric trucks provide convenience for people's work. In the related technology, electric trucks can realize the steering function through the steering system, and realize the lifting function of the truck through the lifting system. In addition, the steering system and the lifting system are independent of each other, that is, the steering system and the lifting system each use independent power motors to provide corresponding power for the steering and lifting of the vehicle.

[0024] However, deploying a power motor for each of the steering system and the lifting system will take up more space inside the vehicle, and will also lead to problems such as high vehicle manufacturing costs and heavy vehicle weight. Therefore, how to simplify the layout, save costs, and reduce vehicle weight has become a technical problem that relevant technicians need to solve urgently.

[0025] Therefore, in order to solve the problems of the prior art, the embodiment of the present application provides a control system. The control system provided by the embodiment of the present application is first introduced below.

[0026] Figure 1 FIG. 1 shows a schematic diagram of the architecture of a control system provided by an embodiment of the present application. Figure 1 As shown, the control system 100 includes:

[0027] A power assembly 110, wherein a first input end of the power assembly is connected to a system oil tank 120, a first output end of the power assembly 110 is connected to an oil inlet of a steering device 130, a second input end of the power assembly 110 is connected to the system oil tank 120, and a second output end of the power assembly 110 is connected to an oil inlet of a lifting device 140;

[0028] A steering device 130, wherein an oil return port of the steering device 130 is connected to the system oil tank 120;

[0029] A lifting device 140, wherein the oil return port of the lifting device 140 is connected to the system oil tank 120;

[0030] The first hydraulic lifting circuit 150 connects the second output end of the power assembly 110 and the system oil tank 120, and is used to return the hydraulic oil output from the second output end of the power assembly 110 to the system oil tank 120 when the steering device 130 is in a working state and the lifting device 140 is in a non-working state.

[0031] In the embodiment of the present application, the power assembly 110 can be used to provide corresponding power to the steering device 130 and the lifting device 140, so that the steering device 130 and the lifting device 140 can realize their respective functions. In one example, hydraulic oil can be absorbed from the system oil tank through the first input end of the power assembly, and the hydraulic oil can be pressurized by the power assembly to make the hydraulic oil have energy, and the hydraulic oil with energy is transmitted to the power device or the lifting device, so that the steering device can realize the steering function, or the power device can realize the lifting function.

[0032] In the embodiment of the present application, the power assembly may include a motor, a steering pump and a lifting pump. The motor is connected to the steering pump and the lifting pump respectively. In addition, one end of the steering pump is connected to the system oil tank, and the other end of the steering pump is connected to the oil inlet of the steering device. One end of the lifting pump is connected to the system oil tank, and the other end of the lifting pump is connected to the oil inlet of the lifting device.

[0033] In the embodiment of the present application, the steering pump and the lifting pump can be controlled by the motor to suck oil from the system oil tank, and the hydraulic oil can be pressurized by controlling the speed of the motor, the steering pump and the lifting pump, so as to provide different power for the control system.

[0034] In the embodiment of the present application, the steering pump and the lifting pump can be controlled by the motor at the same time.

[0035] In the embodiment of the present application, the steering pump and the lifting pump may be of the same hardware structure. Alternatively, the steering pump and the lifting pump may be of different hardware structures. In one example, the steering pump may be a vane pump, and the lifting pump may be a gear pump.

[0036] In the embodiment of the present application, the hydraulic oil transmitted to the steering device can flow back to the system oil tank through the oil circuit between the oil return port of the steering device 130 and the system oil tank 120, thereby ensuring the recycling of the hydraulic oil.

[0037] In the embodiment of the present application, the steering device may be a hardware structure for providing steering assistance to the user, for example, the steering device may be a steering machine, wherein the steering machine may include a recirculating ball converter, etc.

[0038] In the embodiment of the present application, the system oil tank 120 is used to store the hydraulic oil of the control system. It is understood that there may be some devices in the system oil tank to ensure the cleanliness, filtering function and heat dissipation function of the hydraulic oil, so as to ensure that the control system can work normally.

[0039] In the embodiment of the present application, there may be only one system oil tank in the control system for the steering pump and the hydraulic pump to absorb hydraulic oil at the same time, or there may be multiple system oil tanks in the control system, and different system oil tanks are used for the steering pump and the hydraulic pump to absorb hydraulic oil respectively.

[0040] In the embodiment of the present application, the system oil tank may include a steering oil tank and a lifting oil tank. The steering oil tank and the lifting oil tank are different oil tanks of the control system. In addition, the steering oil tank is respectively connected to the first input end of the power assembly and the oil return port of the steering device; the lifting oil tank is respectively connected to the second input end of the power assembly, the oil return port of the lifting device, and the first hydraulic lifting circuit.

[0041] In the embodiment of the present application, the steering pump can obtain hydraulic oil through the steering oil tank, and the lifting pump can obtain hydraulic oil through the lifting oil tank.

[0042] In the embodiment of the present application, the hydraulic oil transmitted to the lifting device can flow back to the system oil tank through the oil circuit between the oil return port of the lifting device 140 and the system oil tank 120, thereby ensuring the recycling of the hydraulic oil.

[0043] In the embodiment of the present application, the lifting device may be a device on a truck that can change the position of the cargo carried by the truck. In one example, the lifting device may be a cargo box of a truck.

[0044] A first hydraulic lifting circuit 150;

[0045] The first hydraulic lifting circuit 150 can be connected to the second output end of the power assembly and the system oil tank.

[0046] In the embodiment of the present application, the first hydraulic lifting circuit can be used to return the hydraulic oil output from the second output end of the power component to the system oil tank when the steering device is in a working state and the lifting device is in a non-working state.

[0047] In an embodiment of the present application, when the steering device is in a working state and the lifting device is in a non-working state, the first hydraulic lifting circuit can be controlled to be conductive, that is, the second output end of the power component is controlled to be directly connected to the system oil tank, so that the hydraulic oil output from the second output end of the control component flows directly back to the system oil tank instead of flowing to the lifting device.

[0048] In the embodiment of the present application, the first hydraulic lifting circuit 150 may include a first switch assembly 151 .

[0049] One end of the first switch component is connected to the second output end of the power component, and the other end of the first switch component is connected to the system oil tank.

[0050] In the embodiment of the present application, when the steering device is in a working state and the lifting device is in a non-working state, the first switch assembly is in an on state. When the steering device is in a non-working state and the lifting device is in a working state, the first switch assembly is in an off state. Among them, the first switch assembly being in an on state can make the first hydraulic lifting circuit where the first switch assembly is located in a conducting state, that is, the hydraulic oil output from the second output end of the power assembly can flow back to the system oil tank. The first switch assembly being in an off state can make the first hydraulic lifting circuit where the first switch assembly is located in a disconnected state, that is, the hydraulic oil output from the second output end of the power assembly can flow to the lifting device, but cannot flow back to the system oil tank.

[0051] In the embodiment of the present application, the first switch component can be controlled by a user, or the first switch component can be controlled by a control signal.

[0052] In one example, the first switch component can be a solenoid valve, and the solenoid valve can be a normally open solenoid valve. It is understandable that when the user does not need to perform a lifting operation, the solenoid valve is in an open state, the first hydraulic lifting circuit is connected, and the hydraulic oil flows back to the system tank without providing power for the lifting device; when the user needs to perform a lifting operation, the solenoid valve can be manipulated, such as by pressing a button, so that the solenoid valve is in a closed state, the first hydraulic lifting circuit is disconnected, and the hydraulic oil cannot flow back to the system tank, but flows to the lifting device to provide power for the lifting device.

[0053] In another example, the first switch component may change the state of the first switch component by receiving a control signal input by a user.

[0054] The control system of the embodiment of the present application connects the first input end and the second input end of the power assembly to the system oil tank, the first output end to the steering device, and the second output end to the lifting device, so as to provide power for the steering and lifting of the vehicle through one power assembly at the same time, effectively avoiding the problems of the power assembly occupying more internal space of the vehicle, high vehicle manufacturing cost, and heavy vehicle weight. In addition, by setting a first hydraulic lifting circuit between the lifting device and the second output end of the power assembly, the steering and lifting of the vehicle are decoupled, and the normal operation of the integrated control system for steering and lifting is achieved.

[0055] As another implementation method of the present application, in order to achieve the descent control of the lifting device, the present application also provides another architecture of the control system, please refer to the following embodiments for details.

[0056] Figure 2 FIG. 1 shows a schematic diagram of the architecture of another control system provided by an embodiment of the present application, such as Figure 2 As shown, the control system also includes:

[0057] A second hydraulic lifting circuit 160;

[0058] Among them, the second hydraulic lifting circuit is connected to the oil inlet of the lifting device and the system oil tank, that is, one end of the second hydraulic lifting circuit is connected to the oil inlet of the lifting device, and the other end of the second hydraulic lifting circuit is connected to the system oil tank.

[0059] In the embodiment of the present application, when the lifting device is in a descending working state and the steering device is in a non-working state, part of the hydraulic oil output from the second output end of the power component can flow back to the system oil tank through the second hydraulic lifting circuit.

[0060] In an embodiment of the present application, when it is determined that the steering device is not working and the lifting device needs to be lowered, the hydraulic oil output by the lifting pump can be partially pressurized through the second hydraulic lifting circuit, that is, part of the hydraulic oil flows back to the system oil tank instead of flowing to the lifting device, thereby reducing the power obtained by the lifting device and achieving the descent of the lifting device.

[0061] In one example, the user may determine whether the lifting device needs to be lowered, or the controller may determine whether the lifting device needs to be lowered. For example, if a sensor detects that the height of the lifting device exceeds a pre-height threshold, it may be determined that the lifting device needs to perform a lowering function.

[0062] In the embodiment of the present application, the second hydraulic lifting circuit 160 may include a second switch assembly 161 .

[0063] Among them, one end of the second switch assembly is connected to the oil inlet of the lifting device, and the other end of the second switch assembly is connected to the system oil tank; when the lifting device is in a descending working state and the steering device is in a non-working state, the second switch assembly is in an on state, and when the lifting device is in an ascending working state and the steering device is in a non-working state, the second switch assembly is in an off state.

[0064] In the embodiment of the present application, the second switch component can be controlled by a user, or the second switch component can be controlled by a control signal.

[0065] In one example, the second switch assembly can be a solenoid valve, and the solenoid valve can be a normally closed solenoid valve. It is understandable that when the user does not need to lower the lifting device, the solenoid valve is in a normally closed state, the first hydraulic lifting circuit is disconnected, and the hydraulic oil cannot flow back to the system tank, but flows to the lifting device to provide power for the lifting device; when the user needs to lower the lifting device, the solenoid valve can be manipulated, such as by pressing a button, so that the solenoid valve is in an open state, the second hydraulic lifting circuit is connected, and the hydraulic oil flows back to the system tank to achieve the lowering of the lifting device.

[0066] In another example, the second switch component may change the on / off state of the second switch component by receiving a control signal input by a user.

[0067] In the embodiment of the present application, by setting up a second hydraulic lifting circuit and controlling the conduction state of the second hydraulic lifting circuit, the amount of hydraulic oil flowing to the lifting device can be controlled, thereby changing the power of the lifting device and achieving the descent control of the lifting device.

[0068] As another implementation of the present application, in order to realize the control of the first switch device and the second switch device, the present application also provides another architecture of the control system, please refer to the following embodiments for details.

[0069] Figure 3 A schematic diagram of the architecture of another control system provided by an embodiment of the present application is shown. Figure 3 As shown, the control system also includes:

[0070] Controller 170;

[0071] Among them, the controller can be connected to the first switch component 151, the steering device and the lifting device, and is used to control the first switch component to be turned on when a turning signal from the steering device is received but a lifting signal from the lifting device is not received. The lifting signal is used to indicate that the lifting device is in a working state, and the turning signal is used to indicate that the steering device is in a working state.

[0072] In addition, the controller can also be connected to the second switch component 161 to control the second switch component to be cut off when a rising signal of the lifting device is received but no turning signal is received; and to control the second switch component to be turned on when a descending signal of the lifting device is received but no turning signal is received.

[0073] In the embodiment of the present application, the state information of the steering device and the lifting device can be obtained by connecting with the controller steering device and the lifting device, including whether the steering signal and the lifting signal are received. The control method of controlling the first switch component and the second switch component is determined according to the state information of the steering device and the lifting device, and the control is performed. Among them, the control method can be to control the on or off state of the first switch component and the second switch component.

[0074] In the embodiment of the present application, the control method of the first switch assembly and the second switch assembly may be a control method prepared in advance by relevant technical personnel based on the status information of the steering device and the lifting device.

[0075] In the embodiment of the present application, the first switch component and the second switch component can be controlled by the controller, providing convenience for user operation.

[0076] It should be clear that the present application is not limited to the specific configuration and processing described above and shown in the figures. For the sake of simplicity, a detailed description of the known method is omitted here. In the above embodiments, several specific steps are described and shown as examples. However, the method process of the present application is not limited to the specific steps described and shown, and those skilled in the art can make various changes, modifications and additions, or change the order between the steps after understanding the spirit of the present application.

[0077] It should also be noted that the exemplary embodiments mentioned in this application describe some methods or systems based on a series of steps or devices. However, this application is not limited to the order of the above steps, that is, the steps can be performed in the order mentioned in the embodiment, or in a different order from the embodiment, or several steps can be performed simultaneously.

[0078] Aspects of the present disclosure are described above with reference to the flowchart and / or block diagram of the method, device (system) and computer program product according to the embodiment of the present disclosure. It should be understood that each box in the flowchart and / or block diagram and the combination of each box in the flowchart and / or block diagram can be implemented by computer program instructions. These computer program instructions can be provided to a processor of a general-purpose computer, a special-purpose computer, or other programmable data processing device to produce a machine so that these instructions executed by the processor of the computer or other programmable data processing device enable the implementation of the function / action specified in one or more boxes of the flowchart and / or block diagram. Such a processor can be, but is not limited to, a general-purpose processor, a special-purpose processor, a special application processor, or a field programmable logic circuit. It can also be understood that each box in the block diagram and / or flowchart and the combination of boxes in the block diagram and / or flowchart can also be implemented by dedicated hardware that performs a specified function or action, or can be implemented by a combination of dedicated hardware and computer instructions.

[0079] The above is only a specific implementation of the present application. Those skilled in the art can clearly understand that for the convenience and simplicity of description, the specific working processes of the systems, modules and units described above can refer to the corresponding processes in the aforementioned method embodiments, and will not be repeated here. It should be understood that the protection scope of the present application is not limited to this. Any technician familiar with the technical field can easily think of various equivalent modifications or replacements within the technical scope disclosed in this application, and these modifications or replacements should be included in the protection scope of this application.

Claims

1. A control system, characterized in that: include: A power assembly, wherein a first input end of the power assembly is connected to a system oil tank, a first output end of the power assembly is connected to an oil inlet of a steering device, a second input end of the power assembly is connected to the system oil tank, and a second output end of the power assembly is connected to an oil inlet of a lifting device; A steering device, wherein the oil return port of the steering device is connected to the system oil tank; A lifting device, wherein the oil return port of the lifting device is connected to the system oil tank; The first hydraulic lifting circuit is connected to the second output end of the power assembly and the system oil tank, and is used to return the hydraulic oil output from the second output end of the power assembly to the system oil tank when the steering device is in a working state and the lifting device is in a non-working state.

2. The control system according to claim 1, characterized in that: The first hydraulic lifting circuit comprises: A first switch assembly, one end of the first switch assembly is connected to the second output end of the power assembly, and the other end of the first switch assembly is connected to the system oil tank; when the steering device is in a working state and the lifting device is in a non-working state, the first switch assembly is in an on state, and when the steering device is in a non-working state and the lifting device is in a working state, the first switch assembly is in an off state.

3. The control system according to claim 1, characterized in that: The control system further comprises: a second hydraulic lifting circuit, communicating with the oil inlet of the lifting device and the system oil tank; When the lifting device is in a descending working state and the steering device is in a non-working state, part of the hydraulic oil outputted from the second output end of the power assembly is returned to the system oil tank.

4. The system according to claim 3, characterized in that The second hydraulic lifting circuit comprises: a second switch assembly, one end of the second switch assembly being connected to the oil inlet of the lifting device, and the other end of the second switch assembly being connected to the system oil tank; When the lifting device is in a descending working state and the steering device is in a non-working state, the second switch component is in an on state; when the lifting device is in an ascending working state and the steering device is in a non-working state, the second switch component is in an off state.

5. The system according to claim 1, characterized in that The power assembly comprises: A motor, wherein the motor is respectively connected to a steering pump and a lifting pump; one end of the steering pump is connected to the system oil tank, and the other end of the steering pump is connected to the oil inlet of the steering device; one end of the lifting pump is connected to the system oil tank, and the other end of the lifting pump is connected to the oil inlet of the lifting device.

6. The system according to claim 5, characterized in that The power assembly further comprises a clutch, one end of which is connected to the motor, and the other end of which is connected to the lift pump.

7. The system according to any one of claims 1 to 6, characterized in that: The system oil tank includes a steering oil tank and a lifting oil tank; The steering oil tank is respectively connected to the first input end of the power assembly and the oil return port of the steering device; The lifting oil tank is respectively connected to the second input end of the power assembly, the oil return port of the lifting device, and the first hydraulic lifting circuit.

8. The system according to claim 2, characterized in that The control system further comprises: A controller is connected to the first switch assembly, the steering device and the lifting device, and is used to control the first switch assembly to be turned on when a turning signal from the steering device is received but a lifting signal from the lifting device is not received, the lifting signal is used to indicate that the lifting device is in a working state, and the turning signal is used to indicate that the steering device is in a working state.

9. The system according to any one of claims 3 or 8, characterized in that The controller is also connected to the second switch component, and is used to control the second switch component to be cut off when receiving the lifting device's rising signal and not receiving the turning signal; and to control the second switch component to be turned on when receiving the lifting device's descending signal and not receiving the turning signal.

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