Mining dump truck self-adaptive to heat dissipation working condition, heat dissipation method, terminal and medium

Abstract

The invention belongs to the technical field of heat dissipation of mining dump trucks, and particularly discloses a heat dissipation working condition self-adaptive mining dump truck, a heat dissipation method, a terminal and a medium, the mining dump truck comprises at least one power unit, the power unit comprises an engine and a generator, the engine is connected with the generator, the generator is connected with a traction converter, and the traction converter is connected with the power unit. The traction converter is connected with the walking motor. The dumper further comprises a first draught fan and a second draught fan. The first fan is electrically connected with at least one generator and is used for cooling the generator; the second draught fan is electrically connected with the traction converter and used for cooling the traction converter and the walking motor. And in combination with temperature data, the control unit adjusts the two fans as required to adapt to heat dissipation requirements of different working conditions. Dynamic regulation and control and energy efficiency optimization of the heat dissipation system are achieved, and the operation stability and environmental adaptability of the mining dump truck are improved.

Description

Technical Field

[0001] The present invention belongs to the technical field of heat dissipation for mining dump trucks, and in particular relates to a mining dump truck with self-adaptive heat dissipation working conditions, a heat dissipation method, a terminal and a medium. Background Art

[0002] Mining dump trucks are essential heavy-duty equipment for transporting ore and stripping layers in large open-pit mines both domestically and internationally. As specialized vehicles, they possess complex structures, powerful powertrains, and high manufacturing and maintenance costs. Due to their exceptional height and width, they can only operate on designated mining roads. Their typical operating conditions involve short distances, high payloads, and frequent uphill and downhill travel. They often operate in conjunction with other equipment such as electric shovels in loading and unloading operations, resulting in significant fluctuations in the vehicle's thermal load and highly dynamic cooling requirements.

[0003] Currently, mainstream mining dump trucks generally use traditional air-cooled radiators for intercooling and water cooling of the engine, while the electric drive system uses an independent fan to cool the traction inverter and electric wheel assembly, or integrates the fan into the rear of the generator for heat dissipation. However, the above solutions generally have problems such as a single cooling circuit, a fixed response mechanism, and hysteresis in air volume adjustment. They are difficult to adapt to variable working conditions such as complex terrain, high temperature differences, and the coexistence of multiple heat sources. Especially in the dual-engine drive configuration, the main engine drives the generator, hydraulic pump and accessories at the same time, while the auxiliary engine drives the generator alone, resulting in uneven distribution of heat dissipation loads. The heat load between the two power systems is difficult to balance and control, which can easily lead to problems such as high energy consumption, uncoordinated system heat dissipation, overheating of key components, or excessive heat dissipation.

[0004] In addition, the existing technology lacks a differentiated control mechanism for different temperature-sensitive components (such as travel motors, traction converters and generators), and is unable to achieve zone control and on-demand cooling based on the actual temperature status of each component; at the same time, the start-stop control and air volume adjustment of the cooling fan operating status generally rely on simple constant speed or start-stop logic, and has not formed a fan control strategy that combines dynamic temperature feedback, adaptive adjustment, and energy efficiency optimization. There are problems such as slow system response, low energy efficiency, and insufficient reliability. Summary of the Invention

[0005] In response to the problems in the prior art, the present invention provides a mining dump truck, a heat dissipation method, a terminal and a medium with adaptive heat dissipation conditions, which solves the problems in the prior art of difficulty in balancing the heat load between the two power systems, easily resulting in high energy consumption, uncoordinated system heat dissipation, overheating of key components or excessive heat dissipation.

[0006] The technical solution adopted in the present invention is as follows: In a first aspect, the present application provides a mining dump truck with self - adapting heat dissipation conditions, including at least one power unit. The power unit includes an engine and a generator, and the engine is connected to the generator. The mining dump truck further includes a traction converter, the generator is connected to the traction converter, and the traction converter is connected to a traveling motor. It also includes a first fan and a second fan; The first fan is electrically connected to at least one generator, and the first fan is used to cool the generator; The second fan is electrically connected to the traction converter, and the second fan is used to cool the traction converter and the traveling motor.

[0007] Furthermore, it further includes a heat dissipation control unit. Temperature sensors are connected to the traveling motor, the traction converter, and the generator respectively, and each temperature sensor is electrically connected to the heat dissipation control unit. The first fan and the second fan are both electrically connected to the heat dissipation control unit.

[0008] Furthermore, the mining dump truck includes a first power unit and a second power unit. The first fan is connected to the first power unit, and the second power unit is connected to a hydraulic unit.

[0009] Furthermore, the generator of the first power unit is connected to the first fan through an electromagnetic clutch.

[0010] Furthermore, the first fan is connected to the traction converter through a first solenoid valve, and the first fan is connected to the generator of the first power unit and the generators of the second power unit respectively through a second solenoid valve and a third solenoid valve.

[0011] Furthermore, the hydraulic unit includes a transmission shaft and a hydraulic pump, and the generator of the second power unit is connected to the hydraulic pump through the transmission shaft.

[0012] In a second aspect, the present application provides a heat dissipation method for a mining dump truck, using the mining dump truck described in the first aspect, including the following steps: Step S1: The heat dissipation control unit acquires and pre - processes the temperature data of all temperature sensors. The pre - processing includes data denoising and outlier identification, and records the maximum temperature data as T; Step S2: The heat dissipation control unit adjusts the air volume of the first fan and the second fan according to the pre - processed temperature data.

[0013] Furthermore, in step S2, an initial temperature T_min and a temperature threshold T_max are set; When T < T_min, the electromagnetic clutch disconnects, and neither the first motor nor the second fan works, and the axial flow fan integrated in the generator works; When T_min ≤ T ≤ T_max, the electromagnetic clutch disconnects, the first motor does not work, and the rotational speed of the second fan is r, ; When T>T_max, the electromagnetic clutch is connected, the first fan starts working, and the speed of the second fan is .

[0014] In a third aspect, the present application provides a terminal, including: A memory for storing a cooling program for a mining dump truck; The processor is used to execute the steps of the mining dump truck heat dissipation method as described in the second aspect when executing the mining dump truck with adaptive heat dissipation working conditions.

[0015] In a fourth aspect, the present application provides a computer-readable storage medium, which stores computer instructions. When a computer reads the computer instructions in the storage medium, the computer executes the heat dissipation method for a mining dump truck as described in the second aspect.

[0016] It can be seen from the above technical solutions that the advantages of the present invention are: (1) By setting up the first and second fans on the basis of the traditional power chain, corresponding to the two types of heat sources, the generator and the traction converter-travel motor, respectively, a partitioned independent heat dissipation circuit is formed, which can achieve targeted cooling of different types of electric drive components, improve the adaptability of the heat dissipation system to various complex mining working conditions, reduce the thermal coupling risk of the vehicle system, and enhance the system's thermal balance control capability.

[0017] (2) By placing temperature sensors on key components (generators, traction converters, and travel motors) and establishing a linkage relationship with the heat dissipation control unit, the system thermal status can be obtained in real time, and the air volume and start-stop control can be adjusted on demand, avoiding energy waste caused by excessive heat dissipation and thermal failures caused by insufficient heat dissipation, thereby improving the heat dissipation control accuracy and response speed.

[0018] (3) Expand the configuration of mining dump trucks to a "dual power unit architecture" and configure different cooling subsystems for each unit. This can keep the cooling function of the core components of the vehicle running independently under unequal loads or partial system failures, improve redundancy and operational reliability, and at the same time, perform differentiated energy allocation according to working conditions, thereby improving the vehicle's operating efficiency and thermal management flexibility in a changing working environment.

[0019] (4) By setting an electromagnetic clutch between the first fan and the first power unit engine, a controllable connection of power transmission between the fan and the engine is achieved, so that the fan can be disconnected under low load or non-high temperature conditions, reducing unnecessary energy consumption; at the same time, when high-intensity heat dissipation is required, the engine can be quickly connected to directly drive the fan, thereby improving the air volume output capacity and taking into account the dual needs of energy saving and high efficiency.

[0020] (5) Multiple solenoid valves are used to distribute the air volume of the first fan to the generator and traction converter as needed, building a flexible air duct switching path. The cooling resources can be dynamically configured according to the system temperature state, effectively solving the thermal management bottleneck problem caused by uneven cooling demand, improving the coordinated heat dissipation capacity of multiple heat sources in the vehicle, and enhancing the intelligent level of temperature control scheduling.

[0021] (6) By connecting the second power unit to the hydraulic pump, a composite power system architecture is formed in which the hydraulic unit is driven by electric drive, avoiding the coupling dependence of the traditional single engine drive mode on the hydraulic system, improving the controllability and response independence of the hydraulic action, reducing the risk of overload of the main power system, and improving the coordination ability between the vehicle drive and the hydraulic system.

[0022] (7) By constructing a heat dissipation method with temperature data acquisition, preprocessing and intelligent control functions, it is possible to filter temperature abnormality data and achieve stable response, thereby improving the heat dissipation control accuracy of the system in a strong interference environment; Threshold logic and linear speed control strategies based on temperature range distribution are adopted to achieve precise correspondence between fan start and stop, air volume adjustment and the temperature status of key components. In particular, the heat dissipation intensity of high-heat source components such as travel motors can be dynamically controlled. At the same time, the fan start and stop are controlled in stages through electromagnetic clutches, which not only meets the high-temperature heat dissipation needs but also avoids the problem of excessive energy consumption of the cooling system, thereby improving energy efficiency and equipment protection. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] In order to more clearly illustrate the technical solution of the present invention, the following is a brief introduction to the drawings required for the description. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.

[0024] Figure 1 This is a structural block diagram of a mining dump truck with adaptive heat dissipation conditions provided by an embodiment of the present invention. DETAILED DESCRIPTION

[0025] The following will clearly and completely describe the technical solutions in the embodiments of the present invention in conjunction with the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0026] See also Figure 1As shown, the present application provides a mining dump truck with adaptive cooling conditions, aiming to address existing problems such as delayed cooling system response, poor adaptability, and high energy consumption under complex and variable operating conditions. The mining dump truck includes at least one power unit, which consists of an engine and a generator. The engine drives the generator through a mechanical connection to achieve electrical energy output. The electrical energy generated by the generator is input into the traction inverter, which performs rectification, inversion, and other conversion processes on the electrical energy before supplying it to the travel motor, enabling electric drive operation of the entire vehicle.

[0027] To improve the system's heat dissipation efficiency and reliability, this application utilizes two independent heat dissipation units: a first fan and a second fan. The first fan cools the generators, and its input is electrically connected to at least one generator via a coupling or electromagnetic clutch. The first fan's outlet communicates with the heat dissipation structures of all generators, delivering airflow to the generator surfaces for efficient active cooling.

[0028] The second fan is dedicated to cooling the traction converter and travel motor. Its inlet is connected to the traction converter's outlet, forming a connected air duct. The second fan's outlet is further connected to the travel motor, enabling tandem cooling of both electric drive components. This dual-fan, dual-channel structure dynamically adjusts operating modes based on real-time operating conditions, improving the thermal management system's adaptive response to temperature changes.

[0029] In an optional embodiment, a mining dump truck with adaptive heat dissipation conditions includes a power transmission system, which includes at least a power unit consisting of an engine and a generator. The engine output shaft drives the generator through a mechanical connection, and the electric energy output by the generator is connected to the traction inverter. The inverter outputs the processed electric energy to the travel motor to complete the drive of the entire vehicle.

[0030] To ensure stable heat dissipation under heavy loads, high temperatures, and long operating times, this application utilizes two independent heat dissipation pathways. The first fan, located on one side of the power unit, rotates to create a cooling airflow. The first fan's outlet connects to the heat dissipation housings of all generators via an air duct, ensuring continuous cooling of the generator set.

[0031] The second fan is used to cool the traction inverter and the travel motor. The air inlet of the second fan is connected to the air outlet of the traction inverter, and the air outlet is connected to the travel motor, forming a cooling path for the air flow from the inverter outlet to the travel motor, adapting to the heat release area of the electric drive system during operation.

[0032] The two fans form independent, parallel cooling circuits. The first fan can be started synchronously during active power output to ensure generator cooling. The second fan can be flexibly started and stopped according to the operating conditions, independent of the engine's operating state, improving energy efficiency. This structure is suitable for complex mining conditions, effectively improving heat dissipation efficiency and ensuring the safe operation of key components.

[0033] In some embodiments, to achieve intelligent control of the cooling system of a mining dump truck and further improve the cooling system's responsiveness to complex operating conditions, the present application also includes a cooling control unit. The cooling control unit is electrically connected to temperature sensors installed on the travel motor, traction converter, and generator to obtain real-time temperature data from each key component.

[0034] Each temperature sensor is installed in a critical heat dissipation area of the corresponding equipment, such as the generator stator housing, the power module area within the traction converter, and the stator or bearing area of the travel motor. This provides accurate information on heat generation during equipment operation. By continuously collecting and providing feedback on temperature data, the cooling control unit determines whether the system is currently experiencing high heat load and adjusts the operating status of the first and second fans accordingly.

[0035] Both the first and second fans are electrically connected to the cooling control unit, allowing them to be independently started, stopped, and their speeds adjusted. This structural design dynamically adjusts the fan's operating status based on the varying heat loads of each cooling target, preventing issues like irrational cooling resource allocation or system response delays, and enhancing the stability, energy efficiency, and adaptability of the vehicle's thermal management.

[0036] In an optional embodiment, based on the aforementioned structure, the mining dump truck further includes a heat dissipation control unit. This control unit is located within the vehicle's electronic control system and can be a standalone controller or integrated into the vehicle's main control system. Its primary function is to achieve centralized management and dynamic scheduling of the cooling system.

[0037] Specifically, temperature sensors are installed at key heat-generating components, such as the generator, traction converter, and travel motor. Each sensor is connected to the cooling control unit via a wire or wiring harness. These temperature sensors can be thermal resistors, thermistors, or digital temperature acquisition elements, and can accurately measure the actual operating temperature of the monitored components.

[0038] After receiving temperature signals from various sensors, the cooling control unit determines whether each component is within the temperature rise range and adjusts the start / stop status, air volume output, and speed level of the first and second fans according to pre-set control logic. For example, if the generator temperature exceeds a set threshold, the control unit turns on the first fan or increases its speed. If the traction converter and travel motor temperatures continue to rise, the control unit activates the second fan and increases the cooling air volume.

[0039] Both the first and second fans are connected to the cooling control unit via control lines, supporting PWM speed regulation, relay control, or CAN bus control, ensuring the system can accurately respond and achieve energy efficiency control based on actual temperature data. This embodiment effectively addresses issues such as delayed fan response and large temperature fluctuations, and offers excellent engineering adaptability for high-temperature, high-load, continuous operation scenarios.

[0040] In some embodiments, the mining dump truck includes a first power unit and a second power unit, the first fan is connected to the first power unit, and the second power unit is connected to a hydraulic unit.

[0041] In some embodiments, the mining dump truck further includes a first power unit and a second power unit. This structure offers greater redundancy and functional division of labor compared to traditional single-power systems. The first power unit is connected to a first fan, primarily driving the generator and cooling it through the first fan, forming the primary power generation and heat dissipation path. The second power unit is connected to a hydraulic unit, driving the hydraulic pump and related hydraulic accessories to ensure hydraulic functions such as lifting, steering, and braking.

[0042] By functionally separating the first and second power units, the main power system can focus on vehicle driving and power generation, while the hydraulic system is supported by an independent power source, which can reduce the load on the main system and improve system reliability and power output efficiency. At the same time, different power units are equipped with different cooling units, which is conducive to achieving zoned cooling control under the conditions of simultaneous operation of multiple heat sources, and improving the scheduling capability and working stability of the vehicle's cooling system.

[0043] In an optional embodiment, the mining dump truck is equipped with two power units: a first power unit and a second power unit, symmetrically arranged on the vehicle frame along the longitudinal or transverse directions. The first power unit, consisting of a first engine and a connected generator, generates electricity for the entire vehicle and transmits the electricity to the traction converter via a cable. The output shaft of the first power unit is also connected to a first fan via a coupling mechanism or electromagnetic clutch, forming the first fan, which is used to actively ventilate and cool the generator.

[0044] The second power unit, located on the other side of the vehicle, consists of a second engine whose output shaft is connected to a hydraulic pump. As the core component of the hydraulic unit, the hydraulic pump provides hydraulic power to the vehicle's lift cylinders, steering system, braking system, and other systems. This hydraulic unit can be centralized or distributed, depending on the overall vehicle layout.

[0045] In this implementation, the first fan is functionally coupled only to the first power unit, ensuring sufficient cooling capacity even when the power generation system is operating at high load. The second power unit forms a relatively independent circuit with the hydraulic unit, insulating the hydraulic system from fluctuations in the primary power generation power, thus maintaining the stability of the vehicle's hydraulic operation. This dual power system achieves work sharing and heat dissipation partitioning, optimizing heat load distribution and improving the overall vehicle's operating efficiency and reliability.

[0046] In some embodiments, the output shaft of the first power unit engine is connected to the first blower of the first blower via an electromagnetic clutch.

[0047] In some embodiments, the engine output shaft in the first power unit is connected to the first fan via an electromagnetic clutch. This structure enables selective power transmission control of the first fan via the electromagnetic clutch, thereby determining whether the first fan operates in conjunction with the engine or generator based on actual cooling requirements.

[0048] Specifically, when the heat dissipation demand is low or the engine is in a low-load operating state, the control system can control the electromagnetic clutch to disconnect, so that the first fan stops running, thereby avoiding unnecessary energy consumption; and when the generator is in high-power operation or the ambient temperature rises, resulting in an increased heat dissipation demand, the control system can control the electromagnetic clutch to engage, so that the first fan runs, thereby improving the cooling efficiency of the generator.

[0049] This connection method improves the flexibility and energy efficiency management capabilities of the cooling system, and is particularly suitable for the operating environment of mining dump trucks with dynamic load characteristics. While meeting strong heat dissipation capabilities under high-temperature conditions, it also takes into account energy conservation and consumption reduction goals.

[0050] In an optional embodiment, the first power unit includes an engine and a generator, the engine being connected to the generator via a coupling to provide the mechanical power required for power generation. The engine output shaft is further connected to an electromagnetic clutch, the output end of which is connected to the first fan.

[0051] The electromagnetic clutch is a controllable electromagnetic mechanism whose engagement and disengagement are controlled by a control signal. The control system uses temperature sensor data from the generator or its surrounding area to determine whether the cooling threshold has been reached. When the temperature is within the normal range, the control system disengages the electromagnetic clutch, stopping the first fan to reduce unnecessary energy consumption. When the temperature reaches the preset cooling requirement, the control system engages the electromagnetic clutch, forcing cooling of the generator.

[0052] This implementation method enables on-demand start-up of the fan through a controllable connection method, which not only ensures the heat dissipation capacity of the generator under high-load operation, but also effectively improves the energy utilization rate of the engine output. It is suitable for dynamic management of the cooling system under variable working conditions in mining areas.

[0053] In some embodiments, the air outlet of the first fan is connected to the air inlet of the traction converter through a first solenoid valve, and the air outlet of the first fan is connected to the generator of the first power unit and the generator of the second power unit through a second solenoid valve and a third solenoid valve respectively.

[0054] In some embodiments, to achieve flexible control and on-demand adjustment of the air outlet path of the first fan, the present application provides multiple solenoid valves on the air outlet channel of the first fan to switch and distribute the air volume to different cooling objects. Specifically, the air outlet of the first fan is connected to the traction converter, the generator of the first power unit, and the generator of the second power unit through three branch air ducts, and a first solenoid valve, a second solenoid valve, and a third solenoid valve are provided on each branch channel to control the on / off state of the corresponding channel.

[0055] With this structure, when the system detects a device's temperature rising and requiring enhanced cooling, the control system opens the corresponding solenoid valve, prioritizing the first fan's airflow to the target device area. When cooling is no longer required, the corresponding solenoid valve closes, avoiding wasted cooling resources. This approach dynamically adjusts air volume based on the thermal load characteristics of different components, achieving "on-demand air supply" and improving the intelligence and cooling efficiency of the vehicle's thermal management system.

[0056] In an optional embodiment, the air outlet of the first fan is connected to three branch air ducts through a main pipe, and the three air ducts lead to the air inlet end of the traction converter, the generator of the first power unit and the generator of the second power unit respectively.

[0057] To independently control these three channels, a first solenoid valve is installed on the channel connecting to the traction converter, a second solenoid valve is installed on the channel connecting to the first generator, and a third solenoid valve is installed on the channel connecting to the second generator. Each of these solenoid valves is connected to the vehicle's cooling control system via control signals and can be independently opened or closed according to the control logic.

[0058] During operation, when the temperature of the traction inverter rises above a preset threshold, the control system opens the first solenoid valve, so that the airflow of the first fan is delivered to the traction inverter to achieve forced ventilation cooling; when the generator of the first power unit or the generator of the second power unit meets its respective cooling requirements, the control system opens the second solenoid valve or the third solenoid valve respectively to achieve cooling air supply in the corresponding path.

[0059] This embodiment realizes zoning control of the air outlet direction of the first fan by setting a controllable solenoid valve component, thereby improving the allocation efficiency of cooling resources, avoiding energy waste caused by overcooling multiple components at the same time, and enhancing the system's dynamic adaptability to changes in complex working conditions.

[0060] In some embodiments, the hydraulic unit includes a transmission shaft and a hydraulic pump, and the generator of the second power unit is connected to the hydraulic pump through the transmission shaft.

[0061] In some embodiments, the hydraulic unit is used to provide hydraulic power for the lifting, steering, braking, and other systems of the mining dump truck. To achieve functional integration between the hydraulic unit and the second power unit, the hydraulic unit in this application includes a drive shaft and a hydraulic pump. The drive shaft serves as a power transmission component for transmitting the mechanical output from the generator of the second power unit to the hydraulic pump, thereby driving the hydraulic pump.

[0062] This mechanical connection allows the generator to not only output electrical energy but also serve as a power source for the hydraulic system, creating a compact and efficient power distribution structure. This solution simplifies the hydraulic drive system's power layout and improves the equipment's energy utilization. It facilitates efficient integration of the vehicle's powertrain and hydraulic systems within limited space, adapting to the high-frequency hydraulic operations required in mining areas.

[0063] In an alternative embodiment, the hydraulic unit of a mining dump truck is located in the middle of the vehicle frame or near the second power unit. The hydraulic unit includes a drive shaft and a hydraulic pump. The second power unit includes an engine and a generator rigidly coupled thereto. The generator's output is connected to the drive shaft via a coupling, and the other end of the drive shaft is connected to the hydraulic pump's input shaft.

[0064] When the second power unit is operating, the generator outputs electrical energy for the vehicle's electrical system and transfers some mechanical energy via the drive shaft to the hydraulic pump, thereby driving the hydraulic system. The hydraulic pump can be a multi-stage variable displacement pump, outputting hydraulic oil for multiple hydraulic actuators such as the vehicle's rearward tilt cylinder, steering cylinder, and brake mechanism.

[0065] This embodiment constructs a power linkage relationship between the generator and the hydraulic pump through a transmission shaft, reducing the arrangement of additional power sources and the number of transmission mechanisms, improving the system compactness and mechanical reliability, and at the same time ensuring that the hydraulic system can obtain a stable and reliable power source when the second power unit is working, which is applicable to the usage scenario of mining dump trucks under high-intensity and continuous operation conditions.

[0066] In some embodiments, the present application provides a heat dissipation method for a mining dump truck. Using the mining dump truck of the first aspect, it includes the following steps: Step S1: The heat dissipation control unit obtains the temperature sensor data from key heat sources such as the generator, traction converter, and walking motor, and performs preprocessing. Record the maximum temperature data as T. The preprocessing includes denoising the temperature data and identifying outliers to ensure the accuracy and robustness of the subsequent control logic; Step S2: The heat dissipation control unit performs dynamic air volume adjustment on the first fan and the second fan according to the effective temperature data after preprocessing. In some embodiments, to improve the response efficiency of the system to the static starting state and the dynamic temperature rise process, an initial temperature T_min and a threshold temperature T_max are set, and an electromagnetic clutch control logic and a fan speed linear control strategy are introduced; When T < T_min, the electromagnetic clutch is disengaged, and neither the first motor nor the second fan works. The axial flow fan integrated with the generator works; When T_min ≤ T ≤ T_max, the electromagnetic clutch is disengaged, the first motor does not work, and the rotational speed of the second fan is r, ; When T > T_max, the electromagnetic clutch is engaged, the first fan works, and the rotational speed of the second fan .

[0067] In some embodiments, the present application provides a terminal, including: A memory for storing the heat dissipation program of the mining dump truck; A processor for executing the steps of the heat dissipation method of the mining dump truck when implementing the mining dump truck with self-adaptive heat dissipation conditions.

[0068] In some embodiments, the present application provides a computer-readable storage medium. The storage medium stores computer instructions. When the computer reads the computer instructions in the storage medium, the computer executes the heat dissipation method of the mining dump truck.

[0069] The above content is only an example and explanation of the concept of the present invention. Those skilled in the art of this technology can make various modifications or supplements to the described specific embodiments or use similar methods to replace them, as long as they do not deviate from the concept of the invention or exceed the scope defined by the present invention, they should fall within the protection scope of the present invention.

Claims

1. A mining dump truck with adaptive heat dissipation conditions, comprising at least one power unit, the power unit comprising an engine and a generator, the engine and the generator being connected, the mining dump truck further comprising a traction converter, the generator being connected to the traction converter, and the traction converter being connected to the travel motor, characterized in that: It includes a first fan and a second fan; The first fan is electrically connected to at least one generator, and the first fan is used to cool the generator; The second fan is electrically connected to the traction converter, and the second fan is used to cool the traction converter and the walking motor.

2. The mining dump truck with adaptive heat dissipation conditions according to claim 1, characterized in that: It further includes a heat dissipation control unit. Temperature sensors are connected to the walking motor, the traction converter and the generator, and each temperature sensor is electrically connected to the heat dissipation control unit. The first fan and the second fan are both electrically connected to the heat dissipation control unit.

3. The mining dump truck with adaptive heat dissipation conditions according to claim 2, characterized in that: The mining dump truck includes a first power unit and a second power unit. The first fan is connected to the first power unit, and the second power unit is connected to a hydraulic unit.

4. The mining dump truck with adaptive heat dissipation conditions according to claim 3 is characterized in that: The generator of the first power unit is connected to the first fan through an electromagnetic clutch.

5. The mining dump truck with adaptive heat dissipation conditions according to claim 4 is characterized in that: The first fan is connected to the traction converter through a first solenoid valve. The first fan is connected to the generator of the first power unit and the generators of the second power unit through a second solenoid valve and a third solenoid valve respectively.

6. The mining dump truck with adaptive heat dissipation conditions according to claim 3, characterized in that: The hydraulic unit includes a transmission shaft and a hydraulic pump. The generator of the second power unit is connected to the hydraulic pump through the transmission shaft.

7. A method for cooling a mining dump truck, characterized in that: When using the mining dump truck according to any one of claims 5 or 6, it includes the following steps: Step S1: The heat dissipation control unit acquires and preprocesses the temperature data of all temperature sensors. The preprocessing includes data denoising and outlier identification, and records the maximum temperature data as T; Step S2: The heat dissipation control unit adjusts the air volume of the first fan and the second fan according to the preprocessed temperature data.

8. The heat dissipation method for a mining dump truck according to claim 7, characterized in that: In step S2, an initial temperature T_min and a temperature threshold T_max are set; When T < T_min, the electromagnetic clutch is disengaged, the first motor and the second fan do not work, and the axial flow fan integrated in the generator works; When T_min≦T≦T_max, the electromagnetic clutch is disconnected, the first motor does not work, and the speed of the second fan is r. ; When T>T_max, the electromagnetic clutch is connected, the first fan starts working, and the speed of the second fan is .

9. A terminal, characterized in that: It includes: A memory for storing the heat dissipation program of the mining dump truck; A processor for implementing the steps of the heat dissipation method of the mining dump truck as described in claim 8 when executing the mining dump truck with adaptive heat dissipation conditions.

10. A computer-readable storage medium, characterized in that The storage medium stores computer instructions. When the computer reads the computer instructions in the storage medium, the computer executes the heat dissipation method of the mining dump truck as described in claim 8.

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