Hydraulic cooling system, cooling method and device for mining electric wheel dumper and vehicle

Abstract

The invention provides a hydraulic cooling system, cooling method and device for a mining electric wheel dumper and a vehicle, and relates to the technical field of vehicle thermal management, the system comprises a plurality of hydraulic cooling modules and a controller, the hydraulic cooling modules are arranged in front of different engines respectively, the controller is connected with the hydraulic cooling modules, and the controller is connected with the hydraulic cooling modules. The hydraulic cooling module comprises a plunger pump, a plunger motor, a fan, an oil cooler, an intercooler, a water radiator and an electromagnetic valve group; the plunger pump is used for inputting hydraulic oil in the hydraulic oil tank into the plunger motor under the power provided by the engine; the controller is used for controlling hydraulic oil to pass through the plunger motor through the electromagnetic valve set, the plunger motor drives the fan to rotate, and the oil cooler, the intercooler and the water radiator are cooled. The engine cooling difficulty of the mining electric wheel dumper can be reduced, and the engine cooling efficiency of the mining electric wheel dumper can be improved.

Description

Technical Field

[0001] The present application relates to the field of vehicle thermal management technology, and in particular to a hydraulic cooling system, cooling method, device and vehicle for a mining electric wheel dump truck. Background Art

[0002] With the rapid development of industries such as coal and rock mining, the development of its transportation tools is also becoming more and more updated and mature. In recent years, a kind of transportation tool called electric drive off-road dump truck has gradually appeared abroad. It has brought a great market impact on traditional dump trucks; its ratio of loading capacity to deadweight is larger than other similar equipment, and its fuel consumption rate is low, and its requirements for construction site road conditions are low. While the transportation cost and failure rate are low, it can also save the investment in construction access roads, minimizing the overall operating cost.

[0003] Electric wheel dump trucks for mining usually have multiple engines built in, including front engines and rear engines. A corresponding radiator is arranged behind each engine, and the engine heat is cooled by mechanical fan drive. However, the high-temperature air generated by the heat dissipation module and radiant heat of the front engine easily causes the intake temperature of the rear engine to be high and the coolant to be high, resulting in poor engine cooling effect of electric wheel dump trucks for mining, which cannot meet the requirements of normal working conditions. Summary of the invention

[0004] The present invention aims to solve at least one of the technical problems existing in the prior art or related art.

[0005] To this end, the present invention provides a hydraulic cooling system, cooling method, device and vehicle for an electric wheel dump truck for mining, which can reduce the difficulty of engine cooling of the electric wheel dump truck for mining and improve the engine cooling efficiency of the electric wheel dump truck for mining.

[0006] According to a first aspect of the present invention, a hydraulic cooling system for an electric wheel dump truck for mining is provided, the hydraulic cooling system for an electric wheel dump truck for mining comprises a plurality of hydraulic cooling modules and a controller, each hydraulic cooling module is respectively arranged in front of a different engine, the controller is respectively connected to each hydraulic cooling module, and the hydraulic cooling module comprises a plunger pump, a plunger motor, a fan, an oil cooler, an intercooler, a water radiator and a solenoid valve group; The plunger pump is connected to the hydraulic oil tank and the plunger motor, the oil outlet of the plunger motor is connected to the oil inlet of the oil cooler, the output shaft of the plunger motor is connected to the rotating shaft of the fan, and the oil outlet of the oil cooler is connected to the hydraulic oil tank; the oil cooler, the intercooler and the water radiator are respectively arranged in front of the fan, and the solenoid valve group is connected in parallel with the plunger motor; The plunger pump is used to input the hydraulic oil in the hydraulic oil tank into the plunger motor under the power provided by the engine; the controller is used to control the hydraulic oil to pass through the plunger motor through the solenoid valve group, and the plunger motor drives the fan to rotate to cool the oil cooler, intercooler and water radiator.

[0007] According to a second aspect of the present invention, a hydraulic cooling method for an electric wheel dump truck for mining is provided, characterized in that the method is applied to the hydraulic cooling system of the electric wheel dump truck for mining in the first aspect, and the method comprises: Obtain the hydraulic oil temperature in the hydraulic oil circuit and the coolant water temperature in the coolant circuit; When it is determined that at least one of the hydraulic oil temperature and the coolant water temperature is greater than a preset temperature threshold, a closing signal is sent to the electromagnetic reversing valve, and the closing signal is used to control the plunger motor to drive the fan to rotate, so as to cool the oil cooler, the intercooler and the water radiator; or, When it is determined that both the hydraulic oil temperature and the coolant water temperature are lower than the preset temperature threshold, an opening signal is sent to the electromagnetic reversing valve, and the opening signal is used to control the plunger motor and the fan to stop rotating.

[0008] According to a third aspect of the present invention, a hydraulic cooling device for an electric wheel dump truck for mining is provided, the device comprising: An acquisition module is used to acquire the hydraulic oil temperature in the hydraulic oil circuit and the coolant water temperature in the coolant circuit; A sending module is used to send a closing signal to the electromagnetic reversing valve when it is determined that at least one of the hydraulic oil temperature and the coolant water temperature is greater than a preset temperature threshold, and the closing signal is used to control the plunger motor to drive the fan to rotate, so as to cool down the oil cooler, the intercooler and the water radiator; or, The sending module is also used to send an opening signal to the electromagnetic reversing valve when it is determined that the hydraulic oil temperature and the coolant water temperature are both lower than a preset temperature threshold. The opening signal is used to control the plunger motor and the fan to stop rotating.

[0009] According to a fourth aspect of the present invention, an electronic device is provided, comprising: a processor and a memory, the memory being used to store a computer program, the processor being used to call and run the computer program stored in the memory, and executing the method in the second aspect or its various implementations.

[0010] According to a fifth aspect of the present invention, a computer-readable storage medium is provided for storing a computer program, wherein the computer program enables a computer to execute the method in the second aspect or its various implementations.

[0011] A vehicle provided according to a sixth aspect of the present application includes: a hydraulic cooling system for a mining electric wheel dump truck as in the first aspect.

[0012] Through the technical solution provided by the present invention, a hydraulic cooling system, cooling method, device and vehicle for a mining electric wheel dump truck are provided. By configuring each hydraulic cooling module in front of different engines, the high-temperature air generated by the heat dissipation module of the front engine can be prevented from affecting the temperature of the rear engine, thereby reducing the difficulty of cooling the engine of the mining electric wheel dump truck. In addition, the engine can drive the plunger pump, the plunger pump drives the plunger motor, and the plunger motor drives the fan to cool the oil cooler and the engine, which not only cools the hydraulic oil but also cools the engine, thereby improving the cooling efficiency of the mining electric wheel dump truck.

[0013] It should be understood that the above general description and the following detailed description are only exemplary and explanatory and cannot limit the present application. Other features and advantages of the present application will be described in detail in the subsequent specific implementation section. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] In order to more clearly illustrate the technical solutions in the embodiments of the present application, the drawings required for use in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work.

[0015] Figure 1 A system schematic diagram of a hydraulic cooling system for a mining electric wheel dump truck provided in an embodiment of the present application; Figure 2 A schematic flow chart of a hydraulic cooling method for a mining electric wheel dump truck provided in an embodiment of the present application; Figure 3 A schematic diagram of the structure of a hydraulic cooling device for a mining electric wheel dump truck provided in an embodiment of the present application; Figure 4 A schematic diagram of the structure of an electronic device according to an embodiment of the present invention is shown; In the figure: 1-Hydraulic oil tank; 2- plunger pump; 3- electromagnetic valve group, 31- first one-way valve, 32- overflow valve, 33- electromagnetic reversing valve; 4- plunger motor; 5- Fan; 6-Oil cooler; 7- second one-way valve; 8-Intercooler; 9- Water radiator. DETAILED DESCRIPTION

[0016] The following will be combined with the drawings in the embodiments of the present application to clearly and completely describe the technical solutions in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, not all of the embodiments. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of this application.

[0017] It should be noted that the terms "first", "second", etc. in the specification and claims of the present application and the above-mentioned drawings are used to distinguish similar objects, and are not necessarily used to describe a specific order or sequence. It should be understood that the data used in this way can be interchangeable where appropriate, so that the embodiments of the present application described herein can be implemented in an order other than those illustrated or described herein. In addition, the terms "including" and "having" and any of their variations are intended to cover non-exclusive inclusions, for example, a process, method, system, product or server that includes a series of steps or units is not necessarily limited to those steps or units clearly listed, but may include other steps or units that are not clearly listed or inherent to these processes, methods, products or devices.

[0018] With the rapid development of industries such as coal and rock mining, the development of its transportation tools is also becoming more and more updated and mature. In recent years, a kind of transportation tool called electric drive off-road dump truck has gradually appeared abroad. It has brought a great market impact on traditional dump trucks; its ratio of loading capacity to deadweight is larger than other similar equipment, and its fuel consumption rate is low, and its requirements for construction site road conditions are low. While the transportation cost and failure rate are low, it can also save the investment in construction access roads, minimizing the overall operating cost.

[0019] Electric wheel dump trucks for mining usually have multiple engines built in, including front engines and rear engines. A corresponding radiator is arranged behind each engine, and the engine heat is cooled by mechanical fan drive. However, the high-temperature air generated by the heat dissipation module and radiant heat of the front engine easily causes the intake temperature of the rear engine to be high and the coolant to be high, resulting in poor engine cooling effect of electric wheel dump trucks for mining, which cannot meet the requirements of normal working conditions.

[0020] In order to solve the above technical problems, the invention concept of the present application is: Figure 1As shown, a hydraulic cooling system for an electric wheel dump truck for mining is provided. The hydraulic cooling system for an electric wheel dump truck for mining includes multiple hydraulic cooling modules and a controller. Each hydraulic cooling module is respectively arranged in front of different engines. The controller is respectively connected to each hydraulic cooling module. The hydraulic cooling module includes a plunger pump 2, a plunger motor 4, a fan 5, an oil cooler 6, an intercooler 8, a water radiator 9 and a solenoid valve group 3; the plunger pump 2 is connected to a hydraulic oil tank 1 and a plunger motor 4, the oil outlet of the plunger motor 4 is connected to the oil inlet of the oil cooler 6, and the plunger pump 2 is connected to the hydraulic oil tank 1 and the plunger motor 4. The oil outlet of the plunger motor 4 is connected to the oil inlet of the oil cooler 6. The output shaft of the plunger motor 4 is connected to the rotating shaft of the fan 5, and the oil outlet of the oil cooler 6 is connected to the hydraulic oil tank 1; the oil cooler 6, the intercooler 8 and the water radiator 9 are respectively arranged in front of the fan 5, and the solenoid valve group 3 is connected in parallel with the plunger motor 4; the plunger pump 2 is used to input the hydraulic oil in the hydraulic oil tank 1 into the plunger motor 4 under the power provided by the engine; the controller is used to control the hydraulic oil to pass through the plunger motor 4 through the solenoid valve group 3, and the plunger motor 4 drives the fan 5 to rotate, so as to cool the oil cooler 6, the intercooler 8 and the water radiator 9.

[0021] like Figure 1 As shown, the solenoid valve group 3 includes a first one-way valve 31, a relief valve 32 and a solenoid reversing valve 33; the first one-way valve 31, the relief valve 32 and the solenoid reversing valve 33 are arranged in parallel, and the first one-way valve 31 is used to prevent the plunger motor 4 from reversing. In the hydraulic cooling system of the electric wheel dump truck for mining, the first one-way valve 31 only allows the hydraulic oil to flow in one direction. When the plunger motor 4 may have a reversing trend for some reason, the first one-way valve 31 can prevent the hydraulic oil from flowing in the opposite direction, thereby preventing the plunger motor 4 from reversing. This helps to ensure that the plunger motor 4 always rotates in the predetermined direction and ensures the normal operation of the equipment; the relief valve 32 is used to prevent the pressure of the inlet and outlet of the plunger motor 4 from exceeding the first preset pressure value. During the operation of the hydraulic cooling system of the electric wheel dump truck for mining, the pressure may increase due to various reasons (such as sudden load changes, unstable output of the hydraulic pump, etc.). If the pressure of the inlet and outlet of the plunger motor 4 is too high, it may cause damage to the motor and the entire system. The overflow valve 32 is like a pressure "safety valve". When the pressure reaches a first preset pressure value, it will automatically open to allow part of the hydraulic oil to flow back to the tank, thereby reducing the system pressure and protecting the plunger motor 4 and other components from damage due to excessive pressure. The electromagnetic reversing valve 33 is used to control the rotation of the plunger motor 4.

[0022] In a specific application scenario, the controller can determine whether it is necessary to cool the mining electric wheel dump truck by turning on the fan 5. Specifically, when it is necessary to control the fan 5 to be turned on, a closing signal can be sent to the electromagnetic reversing valve 33 of the electromagnetic valve group 3. At this time, the hydraulic oil output by the plunger pump 2 will pass through the plunger motor 4, and the plunger motor 4 will drive the fan 5 to rotate at high speed; when it is necessary to control the fan 5 to be turned off, an opening signal can be sent to the electromagnetic reversing valve 33 of the electromagnetic valve group 3. At this time, the hydraulic oil output by the plunger pump 2 does not pass through the plunger motor 4, but is transmitted to the oil cooler 6 through the electromagnetic reversing valve 33 in the electromagnetic valve group 3. At this time, the plunger motor 4 lacks hydraulic power and will not drive the fan 5 to rotate.

[0023] In a specific application scenario, the hydraulic cooling system of the electric wheel dump truck for mining also includes a temperature sensor; the temperature sensor is arranged on the hydraulic oil circuit between the oil cooler 6 and the hydraulic oil tank 1 and the coolant circuit between the water radiator 9 and the engine, and is used to collect the hydraulic oil temperature on the hydraulic oil circuit and the coolant water temperature on the coolant circuit in real time. In the hydraulic system of the electric wheel dump truck for mining, the hydraulic oil will circulate continuously during the working process, and various hydraulic components will do work, thereby generating heat. The function of the oil cooler is to cool the hydraulic oil, and the cooled hydraulic oil will flow back to the hydraulic oil tank. The temperature sensor is arranged in the hydraulic oil circuit, and the temperature of the hydraulic oil after cooling can be monitored in real time. The engine will generate a lot of heat during operation, and coolant is required for cooling. The coolant circulates between the engine and the water radiator, and the function of the water radiator is to dissipate the heat carried by the coolant. The temperature sensor is arranged in the coolant circuit, and the temperature of the coolant can be collected in real time.

[0024] In a specific application scenario, the controller can be connected to the electromagnetic reversing valve 33 and the temperature sensor. The controller can receive the hydraulic oil temperature in the hydraulic oil circuit and the coolant water temperature in the coolant circuit sent by the temperature sensor, and control the on and off of the electromagnetic reversing valve 33 according to the hydraulic oil temperature and the coolant water temperature.

[0025] As a possible implementation, when at least one of the hydraulic oil temperature and the coolant water temperature is greater than the preset temperature threshold, it indicates that the hydraulic system or the engine may have an overheating risk. At this time, the controller can send a closing signal to the electromagnetic reversing valve 33. After receiving the closing signal, the electromagnetic reversing valve 33 will change the position of its internal valve core, thereby changing the flow direction of the hydraulic oil and making the plunger motor 4 start working. The plunger motor 4 drives the fan to rotate, and the wind force generated by the fan rotation will cool the oil cooler 6, the intercooler 8 and the water radiator 9. The oil cooler 6 can cool the hydraulic oil, the intercooler 8 is generally used to cool the engine intake, and the water radiator 9 is used to cool the engine coolant. Through the forced air cooling effect of the fan, the temperature of these components is reduced to ensure that the hydraulic system and the engine work within the normal temperature range. Among them, the closing signal is used to control the plunger motor 4 to drive the fan to rotate, and cool the oil cooler 6, the intercooler 8 and the water radiator 9.

[0026] As another possible implementation, when the hydraulic oil temperature and the coolant water temperature are both lower than the preset temperature threshold, it indicates that the temperatures of the hydraulic system and the engine are normal. At this time, the controller can send an opening signal to the electromagnetic reversing valve 33. After receiving the opening signal, the electromagnetic reversing valve 33 can change the valve core position to stop the plunger motor 4, thereby driving the fan 5 to stop rotating. This can avoid unnecessary operation of the fan, reduce energy consumption, reduce equipment wear, and extend the service life of the equipment. Among them, the opening signal is used to control the plunger motor 4 and the fan 5 to stop rotating.

[0027] In a specific application scenario, the hydraulic cooling system of the electric wheel dump truck for mining also includes a second one-way valve 7, which is connected in parallel with the oil cooler 6, and is used to allow the hydraulic oil to enter the hydraulic oil tank 1 through the second one-way valve 7 when the pressure at the inlet and outlet of the oil cooler 6 exceeds the second preset pressure value. When the pressure exceeds the second preset pressure value, the second one-way valve 7 will open. Since it is a one-way valve, it only allows the hydraulic oil to flow in one direction. At this time, it will provide a channel for the hydraulic oil to bypass the oil cooler 6, allowing the hydraulic oil to directly enter the hydraulic oil tank 1 through the second one-way valve 7. The purpose of this is to protect the oil cooler 6 and the entire hydraulic system, prevent excessive pressure from damaging the oil cooler 6, avoid more serious hydraulic system failures caused by damage to the oil cooler 6, and ensure the safe and stable operation of the hydraulic cooling system of the electric wheel dump truck for mining.

[0028] After introducing the application scenarios of the embodiments of the present application, the technical solution of the present application will be described in detail below: Figure 2 The flowchart of a hydraulic cooling method for a mining electric wheel dump truck provided in an embodiment of the present application, the method can be executed by a controller in a hydraulic cooling system of a mining electric wheel dump truck, but is not limited thereto. Figure 2As shown, the method may include the following steps: Step 210: Acquire the hydraulic oil temperature in the hydraulic oil circuit and the coolant water temperature in the coolant circuit.

[0029] In the hydraulic system of a mining electric wheel dump truck, the hydraulic oil circulates continuously during operation, passing through various hydraulic components to do work, thereby generating heat. The function of the oil cooler is to cool the hydraulic oil, and the cooled hydraulic oil will flow back to the hydraulic oil tank. By obtaining the hydraulic oil temperature on the hydraulic oil circuit, it can be determined whether the hydraulic system is at risk of overheating. The engine generates a lot of heat during operation and requires coolant to cool it. The coolant circulates between the engine and the water radiator, and the function of the water radiator is to dissipate the heat carried by the coolant. By obtaining the coolant water temperature on the coolant circuit, it can be determined whether the engine is at risk of overheating.

[0030] Step 220a, when it is determined that at least one of the hydraulic oil temperature and the coolant water temperature is greater than a preset temperature threshold, a closing signal is sent to the electromagnetic reversing valve, and the closing signal is used to control the plunger motor to drive the fan to rotate, so as to cool the oil cooler, the intercooler and the water radiator.

[0031] Among them, the shutdown signal is used to control the plunger motor to drive the fan to rotate, so as to cool the oil cooler, intercooler and water radiator.

[0032] When it is determined that at least one of the hydraulic oil temperature and the coolant water temperature is greater than the preset temperature threshold, it indicates that the hydraulic system or engine may have an overheating risk. At this time, the controller can send a closing signal to the electromagnetic reversing valve. After receiving the closing signal, the electromagnetic reversing valve will change the position of its internal valve core, thereby changing the flow direction of the hydraulic oil and starting the plunger motor. The plunger motor drives the fan to rotate, and the wind force generated by the fan rotation will cool the oil cooler, intercooler and water radiator.

[0033] In step 220b of the embodiment parallel to step 220a of the embodiment, when it is determined that the hydraulic oil temperature and the coolant water temperature are both lower than the preset temperature threshold, an opening signal is sent to the electromagnetic reversing valve, and the opening signal is used to control the plunger motor and the fan to stop rotating.

[0034] The start signal is used to control the plunger motor and the fan to stop rotating.

[0035] When it is judged that the hydraulic oil temperature and the coolant water temperature are both lower than the preset temperature threshold, it means that the temperature of the hydraulic system and the engine are normal. At this time, the controller can send an opening signal to the electromagnetic reversing valve. After receiving the opening signal, the electromagnetic reversing valve can change the valve core position to stop the plunger motor from working, thereby driving the fan to stop rotating. This can avoid unnecessary operation of the fan, reduce energy consumption, reduce equipment wear, and extend the service life of the equipment.

[0036] In summary, according to the hydraulic cooling method of the electric wheel dump truck for mining provided by this application, the engine drives the plunger pump, the plunger pump drives the plunger motor, and the plunger motor drives the fan to cool the oil cooler and the engine, which not only cools the hydraulic oil but also cools the engine. At the same time, by feedback from the engine water temperature and the hydraulic oil temperature to control the power gain and loss of the solenoid valve group and control the start and stop of the fan motor, the power consumption of the hydraulic cooling system of the electric wheel dump truck for mining can be reduced, and the energy-saving effect can be achieved while ensuring the cooling effect.

[0037] Based on the above Figure 2 A detailed description of the hydraulic cooling method for a mining electric wheel dump truck is provided, such as Figure 3 As shown, Figure 3 FIG. 1 is a block diagram of a hydraulic cooling device for a mining electric wheel dump truck according to an exemplary embodiment. Figure 3 As shown, the device comprises: An acquisition module 31 is used to acquire the hydraulic oil temperature in the hydraulic oil circuit and the coolant water temperature in the coolant circuit; The sending module 32 can be used to send a closing signal to the electromagnetic reversing valve when it is determined that at least one of the hydraulic oil temperature and the coolant water temperature is greater than a preset temperature threshold. The closing signal is used to control the plunger motor to drive the fan to rotate, so as to cool down the oil cooler, the intercooler and the water radiator; or, The sending module 32 can also be used to send an opening signal to the electromagnetic reversing valve when it is determined that the hydraulic oil temperature and the coolant water temperature are both lower than a preset temperature threshold. The opening signal is used to control the plunger motor and the fan to stop rotating.

[0038] Regarding the device in the above embodiment, the specific manner in which each module performs operations has been described in detail in the embodiment of the method, and will not be elaborated here.

[0039] The above text describes the hydraulic cooling device of the electric wheel dump truck for mining of the embodiment of the present invention from the perspective of the functional module in conjunction with the accompanying drawings. It should be understood that the functional module can be implemented in the form of hardware, can be implemented by instructions in the form of software, and can also be implemented by a combination of hardware and software modules. Specifically, the steps of the embodiment of the hydraulic cooling method for the electric wheel dump truck for mining in the embodiment of the present invention can be completed by the hardware integrated logic circuit and / or software instructions in the processor, and the steps of the hydraulic cooling method for the electric wheel dump truck for mining applied in conjunction with the embodiment of the present invention can be directly embodied as a hardware decoding processor to execute, or a combination of hardware and software modules in the decoding processor to execute. Optionally, the software module can be located in a mature storage medium in the field such as a random access memory, a flash memory, a read-only memory, a programmable read-only memory, an electrically erasable programmable memory, a register, etc. The storage medium is located in the memory, and the processor reads the data in the memory, and completes the steps in the above-mentioned embodiment of the hydraulic cooling method for the electric wheel dump truck for mining in conjunction with its hardware.

[0040] Figure 4 is a schematic block diagram of an electronic device 400 according to an embodiment of the present invention.

[0041] like Figure 4 As shown, the electronic device 400 may include: The memory 410 and the processor 420, the memory 410 is used to store the computer program and transmit the program code to the processor 420. In other words, the processor 420 can call and run the computer program from the memory 410 to implement the method in the embodiment of the present invention.

[0042] For example, the processor 420 may be configured to execute the above method embodiments according to instructions in the computer program.

[0043] In some embodiments of the present invention, the processor 420 may include but is not limited to: General-purpose processors, digital signal processors (DSP), application-specific integrated circuits (ASIC), field-programmable gate arrays (FPGA) or other programmable logic devices, discrete gate or transistor logic devices, discrete hardware components, etc.

[0044] In some embodiments of the present invention, the memory 410 includes but is not limited to: Volatile memory and / or non-volatile memory. Among them, the non-volatile memory can be read-only memory (ROM), programmable ROM (PROM), erasable programmable read-only memory (EPROM), electrically erasable programmable read-only memory (EEPROM) or flash memory. Volatile memory can be random access memory (RAM), which is used as an external cache. By way of example and not limitation, many forms of RAM are available, such as static random access memory (SRAM), dynamic random access memory (DRAM), synchronous dynamic random access memory (SDRAM), double data rate synchronous dynamic random access memory (DDR SDRAM), enhanced synchronous dynamic random access memory (ESDRAM), synchronous link DRAM (SLDRAM), and direct memory bus random access memory (Direct Rambus RAM, DR RAM).

[0045] In some embodiments of the present invention, the computer program may be divided into one or more modules, which are stored in the memory 410 and executed by the processor 420 to complete the method provided by the present invention. The one or more modules may be a series of computer program instruction segments capable of completing specific functions, and the instruction segments are used to describe the execution process of the computer program in the controller.

[0046] like Figure 4 As shown, the electronic device 400 may further include: The transceiver 430 may be connected to the processor 420 or the memory 410 .

[0047] The processor 420 may control the transceiver 430 to communicate with other devices, specifically, to send data or data to other devices, or to receive data or data sent by other devices. The transceiver 430 may include a transmitter and a receiver. The transceiver 430 may further include an antenna, and the number of antennas may be one or more.

[0048] It should be understood that the various components in the electronic device are connected via a bus system, wherein the bus system includes not only a data bus but also a power bus, a control bus and a status signal bus.

[0049] The present invention also provides a computer storage medium having a computer program stored thereon, which, when executed by a computer, enables the computer to perform the method of the above method embodiment. In other words, an embodiment of the present invention also provides a computer program product containing instructions, which, when executed by a computer, enables the computer to perform the method of the above method embodiment.

[0050] When software is used for implementation, it can be implemented in whole or in part in the form of a computer program product. The computer program product includes one or more computer instructions. When the computer program instructions are loaded and executed on a computer, the process or function according to the embodiment of the present invention is generated in whole or in part. The computer can be a general-purpose computer, a special-purpose computer, a computer network, or other programmable devices. The computer instructions can be stored in a computer-readable storage medium, or transmitted from one computer-readable storage medium to another computer-readable storage medium. For example, the computer instructions can be transmitted from a website site, computer, server or data center to another website site, computer, server or data center by wired (e.g., coaxial cable, optical fiber, digital subscriber line (Digital Subscriber Line, DSL)) or wireless (e.g., infrared, wireless, microwave, etc.) mode. The computer-readable storage medium can be any available medium that a computer can access or a data storage device such as a server or data center that includes one or more available media integration. The available medium can be a magnetic medium (e.g., a floppy disk, a hard disk, a tape), an optical medium (e.g., a digital video disc (Digital Video Disc, DVD)), or a semiconductor medium (e.g., a solid-state drive (SSD)), etc.

[0051] Based on the above electronic device, the embodiment of the present application further provides a vehicle, which may specifically include: the above electric wheel dump truck hydraulic cooling system for mining. The vehicle may specifically be a vehicle suitable for freight or transportation, loading or containing special goods or objects, such as an electric wheel dump truck for mining.

[0052] Those skilled in the art will appreciate that the modules and algorithm steps of each example described in conjunction with the embodiments applied herein can be implemented in electronic hardware, or a combination of computer software and electronic hardware. Whether these functions are performed in hardware or software depends on the specific application and design constraints of the technical solution. Professional and technical personnel can use different methods to implement the described functions for each specific application, but such implementation should not be considered to be beyond the scope of the present invention.

[0053] In the several embodiments provided by the present invention, it should be understood that the disclosed systems, devices and methods can be implemented in other ways. For example, the device embodiments described above are only schematic. For example, the division of the module is only a logical function division. There may be other division methods in actual implementation, such as multiple modules or components can be combined or integrated into another system, or some features can be ignored or not executed. Another point is that the mutual coupling or direct coupling or communication connection shown or discussed can be through some interfaces, indirect coupling or communication connection of devices or modules, which can be electrical, mechanical or other forms.

[0054] The modules described as separate components may or may not be physically separated, and the components displayed as modules may or may not be physical modules, that is, they may be located in one place, or they may be distributed on multiple network units. Some or all of the modules may be selected according to actual needs to achieve the purpose of the scheme of this embodiment. For example, each functional module in each embodiment of the present application may be integrated into a processing module, or each module may exist physically separately, or two or more modules may be integrated into one module.

[0055] The above are only specific embodiments of the present invention, but the protection scope of the present invention is not limited thereto. Any person skilled in the art who is familiar with the technical field can easily think of changes or substitutions within the technical scope disclosed in this application, which should be included in the protection scope of the present invention. Therefore, the protection scope of the present invention should be based on the protection scope of the claims.

Claims

1. A hydraulic cooling system for a mining electric wheel dump truck, characterized in that: The hydraulic cooling system of the mining electric wheel dump truck includes a plurality of hydraulic cooling modules and a controller, each of the hydraulic cooling modules is respectively arranged in front of different engines, the controller is respectively connected to each of the hydraulic cooling modules, and the hydraulic cooling module includes a plunger pump, a plunger motor, a fan, an oil cooler, an intercooler, a water radiator and a solenoid valve group; The plunger pump is connected to the hydraulic oil tank and the plunger motor, the oil outlet of the plunger motor is connected to the oil inlet of the oil cooler, the output shaft of the plunger motor is connected to the rotating shaft of the fan, and the oil outlet of the oil cooler is connected to the hydraulic oil tank; the oil cooler, the intercooler and the water radiator are respectively arranged in front of the fan, and the solenoid valve group is connected in parallel with the plunger motor; The plunger pump is used to input the hydraulic oil in the hydraulic oil tank into the plunger motor under the power provided by the engine; The controller is used to control the hydraulic oil to pass through the plunger motor through the solenoid valve group, and the plunger motor drives the fan to rotate to cool the oil cooler, the intercooler and the water radiator.

2. The hydraulic cooling system of the electric wheel dump truck for mining according to claim 1 is characterized in that: The solenoid valve group includes a first one-way valve, a relief valve and a solenoid reversing valve; The first one-way valve, the overflow valve and the electromagnetic reversing valve are arranged in parallel. The first one-way valve is used to prevent the plunger motor from reversing. The overflow valve is used to prevent the inlet and outlet oil pressures of the plunger motor from exceeding a first preset pressure value. The electromagnetic reversing valve is used to control the rotation of the plunger motor.

3. The hydraulic cooling system of the electric wheel dump truck for mining according to claim 2 is characterized in that: The hydraulic cooling system of the mining electric wheel dump truck also includes a temperature sensor; The temperature sensor is arranged on the hydraulic oil circuit between the oil cooler and the hydraulic oil tank and on the coolant circuit between the water radiator and the engine, and is used to collect the hydraulic oil temperature in the hydraulic oil circuit and the coolant water temperature in the coolant circuit.

4. The hydraulic cooling system of the electric wheel dump truck for mining according to claim 3 is characterized in that: The controller is connected to the electromagnetic reversing valve and the temperature sensor; The controller is used to send a closing signal to the electromagnetic reversing valve when it is determined that at least one of the hydraulic oil temperature and the coolant water temperature is greater than a preset temperature threshold, or to send an opening signal to the electromagnetic reversing valve when it is determined that both the hydraulic oil temperature and the coolant water temperature are less than the preset temperature threshold, wherein the closing signal is used to control the plunger motor to drive the fan to rotate, so as to cool the oil cooler, the intercooler and the water radiator, and the opening signal is used to control the plunger motor and the fan to stop rotating.

5. The hydraulic cooling system of the electric wheel dump truck for mining according to claim 1 is characterized in that: It also includes a second one-way valve, which is connected in parallel with the oil cooler and is used to allow the hydraulic oil to enter the hydraulic oil tank through the second one-way valve when the pressure of the oil inlet and outlet of the oil cooler exceeds a second preset pressure value.

6. A hydraulic cooling method for a mining electric wheel dump truck, characterized in that: The method is applied to a hydraulic cooling system of a mining electric wheel dump truck according to any one of claims 1 to 5, and the method comprises: Obtain the hydraulic oil temperature in the hydraulic oil circuit and the coolant water temperature in the coolant circuit; When it is determined that at least one of the hydraulic oil temperature and the coolant water temperature is greater than a preset temperature threshold, a closing signal is sent to the electromagnetic reversing valve, and the closing signal is used to control the plunger motor to drive the fan to rotate, so as to cool the oil cooler, the intercooler and the water radiator; or, When it is determined that both the hydraulic oil temperature and the coolant water temperature are less than a preset temperature threshold, an opening signal is sent to the electromagnetic reversing valve, and the opening signal is used to control the plunger motor and the fan to stop rotating.

7. A hydraulic cooling device for a mining electric wheel dump truck, characterized in that: The device comprises: An acquisition module is used to acquire the hydraulic oil temperature in the hydraulic oil circuit and the coolant water temperature in the coolant circuit; A sending module is used to send a closing signal to the electromagnetic reversing valve when it is determined that at least one of the hydraulic oil temperature and the coolant water temperature is greater than a preset temperature threshold, and the closing signal is used to control the plunger motor to drive the fan to rotate, so as to cool down the oil cooler, the intercooler and the water radiator; or, The sending module is also used to send an opening signal to the electromagnetic reversing valve when it is determined that the hydraulic oil temperature and the coolant water temperature are both lower than a preset temperature threshold, and the opening signal is used to control the plunger motor and the fan to stop rotating.

8. An electronic device, characterized in that: include: A processor and a memory, the memory being used to store a computer program, and the processor being used to call and run the computer program stored in the memory to execute the method of claim 6.

9. A computer-readable storage medium, characterized in that: Used to store a computer program, wherein the computer program causes a computer to execute the method according to claim 6.

10. A vehicle, characterized in that: A hydraulic cooling system for a mining electric wheel dump truck comprising any one of claims 1 to 5.

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