Motor type selection method and device of excavating equipment and excavating equipment

Abstract

The invention provides a motor type selection method and device of excavating equipment and the excavating equipment, and is applied to the technical field of engineering machineries, the motor type selection method of the excavating equipment comprises the steps that firstly, performance parameters and actual working condition parameters of the excavating equipment are obtained, the performance parameters comprise the rotating speed, the torque and the power of the excavating equipment under different gears, and the actual working condition parameters comprise the rotating speed, the torque and the power; a temporary motor system is selected according to performance parameters of excavation equipment, performance parameters and model parameters of the temporary motor system are obtained, and then a motor simulation model is constructed based on motor temperature rise simulation software and the performance parameters and the model parameters of the temporary motor system. The method comprises the steps of obtaining a motor simulation model, inputting actual working condition parameters of excavation equipment into the motor simulation model to obtain temperature rise simulation data, and finally determining a target motor system of the excavation equipment according to the temperature rise simulation data. According to the invention, the problem that the motor type selection is not matched with the actual demand of the excavating equipment can be solved, and the power waste of the motor during the operation of the excavating equipment is reduced.

Description

Technical Field

[0001] The present application relates to the technical field of engineering machinery, and in particular to a motor selection method and device for excavating equipment, and excavating equipment. Background Art

[0002] At present, the requirements for emission pollution of non-road mobile engineering machinery are becoming increasingly stringent, and various engineering machinery are also gradually being electrified, especially various excavation equipment. Electric-driven excavation equipment solves the problems of high fuel consumption, high pollution and high noise of traditional diesel engines. The operation of electric-driven excavation equipment is inseparable from the motor. The choice of motor is directly related to whether it can meet the needs of specific applications of excavation equipment and achieve the best performance, work efficiency and cost-effectiveness. Therefore, the motor selection method of excavation equipment is crucial to excavation equipment.

[0003] The existing motor selection method generally preliminarily matches the motor parameters according to the vehicle parameters and performance indicators, simulates the vehicle power and economy according to the preliminarily selected motor parameters, and builds a simulation model for the vehicle power and economy. Although this method can improve the simulation speed, has strong operability, and saves matching and selection time, it is not suitable for excavators with frequent fluctuations in power demand. If matched according to the maximum torque demand, the motor selection will be too large, resulting in power waste. Summary of the invention

[0004] In view of this, the present application is dedicated to providing a motor selection method, device, and excavation equipment for excavation equipment. In this solution, a temporary motor system is selected according to the performance parameters of the excavation equipment, and the performance parameters and model parameters of the temporary motor system are obtained. A motor simulation model is constructed based on the motor temperature rise simulation software and the performance parameters and model parameters of the temporary motor system, and temperature rise simulation data is obtained. According to the temperature rise simulation data, the target motor system of the excavation equipment is determined. This effectively solves the problem that the existing motor selection method cannot be applied to excavation equipment with frequent power fluctuations.

[0005] In a first aspect, an embodiment of the present application provides a method for selecting a motor for an excavating device, comprising:

[0006] Acquire performance parameters and actual working condition parameters of the excavation equipment, wherein the performance parameters include speed, torque and power of the excavation equipment at different gears;

[0007] Selecting a temporary motor system according to the performance parameters of the excavation equipment, and obtaining performance parameters and model parameters of the temporary motor system;

[0008] Building a motor simulation model based on motor temperature rise simulation software and the performance parameters and model parameters of the temporary motor system, and inputting the actual operating parameters of the mining equipment into the motor simulation model to obtain temperature rise simulation data;

[0009] A target motor system of the excavating equipment is determined according to the temperature rise simulation data.

[0010] Optionally, determining a target motor system of the mining equipment according to the temperature rise simulation data includes:

[0011] When the temperature rise simulation data is within a preset temperature rise range, the performance parameters of the temporary motor system are determined to be the performance parameters of the target motor system of the excavating equipment.

[0012] Optionally, the motor selection method for excavating equipment provided in the first aspect of the present application further includes:

[0013] When the temperature rise simulation data is not within a preset temperature rise range, modifying the performance parameters of the temporary motor system; and

[0014] A new motor simulation model is constructed based on the motor temperature rise simulation software and the model parameters of the temporary motor system and the modified performance parameters to obtain new temperature rise simulation data.

[0015] Optionally, when the temperature rise simulation data is within a preset temperature rise range, determining the performance parameters of the temporary motor system as the performance parameters of the target motor system of the excavating equipment includes:

[0016] Determine a temperature rise simulation value corresponding to the highest gear of the mining equipment according to the temperature rise simulation data;

[0017] When the temperature rise simulation value corresponding to the highest gear is within the preset temperature rise range, the performance parameters of the temporary motor system are determined to be the performance parameters of the target motor system of the excavating equipment.

[0018] Optionally, the preset temperature rise range is: 70-75K.

[0019] Optionally, the motor selection method for excavating equipment provided in the first aspect of the present application further includes:

[0020] Calculating the heat generated by the temporary motor under each working condition according to the performance parameters of the temporary motor system and the actual working condition parameters of the excavation equipment; and

[0021] Calculate the motor temperature rise value under each working condition based on the heat generated under each working condition;

[0022] When the motor temperature rise value is within a preset temperature rise range, the temporary motor system is determined to be the target motor system of the excavating equipment.

[0023] Optionally, the performance parameters of the temporary motor system include: current values ​​corresponding to torques at different gears, and losses of various components of the motor under various working conditions.

[0024] Optionally, the model parameters include: size values ​​of various components in the three-dimensional model of the motor, thermal conductivity of various components of the motor, specific heat capacity of the motor, number of turns of the motor coil, motor wire diameter, and motor cooling parameters.

[0025] In a second aspect, an embodiment of the present application provides a motor selection device for an excavating device, comprising:

[0026] A data acquisition module, the data acquisition module is used to obtain performance parameters and actual working condition parameters of the excavation equipment, the performance parameters including the speed, torque and power of the excavation equipment at different gears;

[0027] Selecting a temporary motor system according to the performance parameters of the excavation equipment, and obtaining performance parameters and model parameters of the temporary motor system;

[0028] A modeling module, the modeling module is used to build a motor simulation model based on the motor temperature rise simulation software and the performance parameters and model parameters of the temporary motor system, and input the actual working condition parameters of the mining equipment into the motor simulation model to obtain temperature rise simulation data;

[0029] A judgment module is used to determine a target motor system of the excavating equipment according to the temperature rise simulation data.

[0030] In a third aspect, an embodiment of the present application provides an excavation device, including:

[0031] A motor and a motor selection device for the excavating equipment described in the second aspect above.

[0032] Based on the above content, the present application provides a motor selection method for an excavation equipment. First, the performance parameters and actual operating parameters of the excavation equipment are obtained. The performance parameters include the speed, torque and power of the excavation equipment at different gears. A temporary motor system is selected according to the performance parameters of the excavation equipment, and the performance parameters and model parameters of the temporary motor system are obtained. Then, a motor simulation model is constructed based on the motor temperature rise simulation software and the performance parameters and model parameters of the temporary motor system, and the actual operating parameters of the excavation equipment are input into the motor simulation model to obtain temperature rise simulation data. Finally, the target motor system of the excavation equipment is determined according to the temperature rise simulation data. This application can solve the problem of mismatch between motor selection and actual needs of excavation equipment, and reduce the power waste of the motor when the excavation equipment is running. BRIEF DESCRIPTION OF THE DRAWINGS

[0033] In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.

[0034] Figure 1 A schematic diagram of a flow chart of a motor selection method for an excavating device provided in an embodiment of the present application;

[0035] Figure 2 A schematic diagram of a flow chart of a motor selection method for an excavating device provided in an embodiment of the present application;

[0036] Figure 3 A schematic diagram of a flow chart of a motor selection method for an excavating device provided in an embodiment of the present application;

[0037] Figure 4 A schematic diagram of a flow chart of a motor selection method for an excavating device provided in an embodiment of the present application;

[0038] Figure 5 A schematic diagram of a flow chart of a motor selection method for an excavating device provided in an embodiment of the present application;

[0039] Figure 6 A structural block diagram of a motor selection device for excavating equipment provided in an embodiment of the present application. DETAILED DESCRIPTION

[0040] Unless otherwise defined, the technical terms or scientific terms used in the embodiments of this specification shall have the common meanings understood by persons with ordinary skills in the field to which this specification belongs. The words "first", "second" and similar words used in the embodiments of this specification do not indicate any order, quantity or importance, but are only used to avoid confusion of constituent elements.

[0041] Unless the context requires otherwise, throughout the specification, "plurality" means "at least two", and "including" is interpreted as an open, inclusive meaning, that is, "including, but not limited to". In the description of the specification, the terms "one embodiment", "some embodiments", "exemplary embodiments", "examples", "specific examples" or "some examples" are intended to indicate that a particular feature, structure, material or characteristic associated with the embodiment or example is included in at least one embodiment or example of the specification. The schematic representation of the above terms does not necessarily refer to the same embodiment or example.

[0042] The following will be combined with the drawings in the embodiments of this specification to clearly and completely describe the technical solutions in the embodiments of this specification. Obviously, the described embodiments are only part of the embodiments of this specification, not all of the embodiments. Based on the embodiments in this specification, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of this specification.

[0043] Application Overview

[0044] The power system of electric excavation equipment is mainly composed of motors, which convert electrical energy into mechanical energy through the principle of electromagnetic induction. In excavation equipment, motors can provide stable and powerful power output for excavation equipment. The transmission system transmits the output power of the motor to the working device, slewing device and walking mechanism, etc., so that the excavation equipment can complete various tasks efficiently and stably.

[0045] However, the motor selection method in the prior art is not suitable for excavating equipment with frequently fluctuating power requirements. If the motor is directly matched according to the maximum torque requirement of the excavating equipment, the motor selection will be too large, resulting in power waste.

[0046] In order to solve the above technical problems, the present application provides a motor selection method and device for excavating equipment, and excavating equipment.

[0047] The motor selection method for the excavating equipment provided in the embodiments of this specification will be exemplarily described below with reference to the accompanying drawings.

[0048] Exemplary Methods

[0049] like Figure 1 As shown, in this exemplary embodiment, a method for selecting a motor for an excavating device is provided, and the method may include the following steps:

[0050] S100: Acquire performance parameters and actual working condition parameters of the excavation equipment, where the performance parameters include rotation speed, torque and power of the excavation equipment at different gears.

[0051] Excavation equipment may include excavators, bulldozers, scrapers, loaders, earthmoving machinery, etc.

[0052] The speed, torque and power of the excavation equipment motor are important parameters for measuring the performance of the excavation equipment. These parameters directly affect the operating efficiency and power performance of the excavator. When the excavation equipment is determined, the performance parameters of the excavation equipment (including the speed, torque and power of the excavation equipment at different gears) are also determined. Among them, the performance parameters of the excavation equipment can be determined through the factory manual or obtained from the excavation equipment supplier. The excavation equipment can be a new excavation equipment that has not been used for construction work, or it can be an old excavation equipment that has been used for construction work. When the excavation equipment is a new excavation equipment that has not been used for construction work, the actual working parameters of the excavation equipment need to be collected after the new excavation equipment is put into construction work. When the excavation equipment is an old excavation equipment that has been used for construction work, the actual working parameters of the excavation equipment can be obtained from the recent construction work records of the excavation equipment.

[0053] The actual working condition parameters of the excavation equipment may include the speed, torque and power of the excavation equipment in the actual working process at each gear, as well as the corresponding duration. Specifically, when the working condition of the excavation equipment is different, the gear used is different. When the excavation equipment uses a gear, the power of the motor of the excavation equipment is proportional to the speed and torque, and the speed and torque are inversely proportional. As the gear increases, the power, speed and torque of the motor of the excavation equipment increase. For example, when the excavation equipment is an excavator, the working condition of the excavator can be subdivided into 7 sub-processes: I-excavation, II-bucket rotation, III-turntable full bucket rotation, IV-lifting arm, V-unloading, VI-turntable empty bucket return, VII-lowering arm; the working condition of the excavator can also be roughly divided into 4 sub-processes: I-excavation, II-full load rotation, III-unloading, IV-no-load rotation. When the excavator is performing an excavation operation, the gear used is the highest, and the corresponding motor speed, torque and power are also the highest. According to the working nature of the excavator, the operation process of the excavator has a strong periodicity or cyclicity, which is reflected in the repeated operation of the ordered actions. This application is introduced based on the construction operation of the excavator, and the operation process of other types of excavation equipment also has a strong periodicity.

[0054] S200: Selecting a temporary motor system according to performance parameters of the excavation equipment, and obtaining performance parameters and model parameters of the temporary motor system.

[0055] When the excavation equipment is determined, its performance parameters are also determined. Its performance parameters include the speed, torque and power of the excavation equipment at different gears, so that the maximum torque and power required for the excavation equipment at different gears can be obtained. The temporary motor system is selected according to the performance parameters of the excavation equipment. The selected temporary motor system is required to meet the motor rated torque and rated power greater than the maximum torque and power required for each gear of the excavation equipment. After the temporary motor system is selected, the motor designer can obtain the performance parameters and model parameters of the temporary motor system through calculation.

[0056] For example, when the excavation equipment is a certain model of excavator, the excavator has 10 gears, the torque and power required for gear 1 are the smallest, and the corresponding torque is 218N.m and the power is 25.1kW, the torque and power required for gear 10 are the largest, and the corresponding torque is 470N.m and the power is 93.5kW. When selecting a temporary motor system, the selected temporary motor system is required to meet the requirements that the rated torque and rated power of the motor are greater than the maximum torque and power required for each gear of the excavation equipment, that is, the rated torque and rated power of the temporary motor system are greater than the torque and power required for the maximum gear of the excavation equipment, that is, the rated torque of the temporary motor system is greater than 470N.m, and the rated power of the temporary motor system is greater than 93.5kW.

[0057] S300: A motor simulation model is constructed based on the motor temperature rise simulation software and the performance parameters and model parameters of the temporary motor system, and the actual operating parameters of the mining equipment are input into the motor simulation model to obtain temperature rise simulation data.

[0058] Based on the performance parameters and model parameters of the temporary motor system, a motor simulation model is constructed on the motor temperature rise simulation software. The motor temperature rise simulation software may include Motor CAD and Maxwell. Here, no excessive restrictions are imposed on the motor temperature rise simulation software, as long as the motor temperature rise simulation function can be realized. After the motor simulation model is built, the actual operating parameters of the excavation equipment obtained in advance are input into the motor simulation model to obtain temperature rise simulation data. The input actual operating parameters of the excavation equipment can be subdivided into multiple groups, each group is divided according to the gear, and each gear corresponds to the speed, torque, power and corresponding duration of the excavation equipment under the gear. Since the excavation equipment needs to move during construction, the speed, torque and power of the excavation equipment will fluctuate within a certain range even in the same gear. Therefore, the speed, torque and power of the excavation equipment under the gear corresponding to each gear can take the corresponding average value. The input actual operating parameters of the excavation equipment are cyclic operating parameters.

[0059] S400: Determine a target motor system of the excavation equipment according to the temperature rise simulation data.

[0060] Different temperature rise simulation data are obtained according to different actual operating parameters of the input excavation equipment. In some embodiments, the temperature rise in this application refers to the difference between the motor temperature at the end of the temperature rise test and the motor temperature at the beginning of the test. The motor has its own temperature sensor inside, and the motor temperature can be obtained by reading the controller data. Generally, the motor is stable at a certain temperature for 30-60 minutes, and it can be determined that the motor temperature is stable. When the motor temperature is stable, the temperature rise simulation data is read, and the target motor system of the excavation equipment is determined based on the temperature rise simulation data.

[0061] In some embodiments of the present application, by obtaining the performance parameters and actual operating parameters of the excavation equipment, wherein the performance parameters include the speed, torque and power of the excavation equipment at different gears, a temporary motor system is selected according to the performance parameters of the excavation equipment, and the performance parameters and model parameters of the temporary motor system are obtained. A motor simulation model is constructed based on the motor temperature rise simulation software and the performance parameters and model parameters of the temporary motor system, and the actual cycle operating parameters of the excavation equipment are input into the motor simulation model to obtain temperature rise simulation data. According to the temperature rise simulation data, the target motor system of the excavation equipment is determined. The method of the present application can solve the problem of mismatch between motor selection and actual needs of the excavation equipment, and reduce the power waste of the motor when the excavation equipment is running.

[0062] In some embodiments of the present application, the performance parameters of the temporary motor system may include: the current value corresponding to the torque under different gears, the loss of each component of the motor under various working conditions, and the loss of each component includes friction loss, iron loss, etc.

[0063] In some embodiments of the present application, the model parameters of the temporary motor system may include: the size values ​​of each component in the three-dimensional model of the motor, the thermal conductivity of each component of the motor, the motor specific heat capacity, the number of turns of the motor coil, the motor wire diameter, and the motor cooling parameters.

[0064] In order to establish a simulation model for the motor, the model parameters of the motor are essential. When the motor system is determined, the size values ​​of each component in the motor three-dimensional model can be determined. In addition, the thermal conductivity of each motor component, the motor specific heat capacity, and the motor cooling parameters can also be obtained through experiments or calculations, as follows:

[0065] The thermal conductivity can be measured by experimental methods, which are mainly divided into steady-state method and transient method. The steady-state method uses a heat source to heat the sample so that the heating and heat dissipation process reaches a balanced state, and calculates the thermal conductivity by measuring the temperature gradient and the heat transfer rate per unit area combined with Fourier's law. The transient law determines the thermal diffusion coefficient of the sample by monitoring the temperature change rate on the surface of the sample being tested, and then obtains the thermal conductivity.

[0066] The sample is heated and the relationship between its temperature change and the amount of heat absorbed or released is measured. From this data, the specific heat capacity of the substance can be calculated.

[0067] Detailed motor cooling parameter information is obtained by consulting the technical manual, including switching loss, saturation voltage drop, equivalent resistance, etc. of the power device. This information is used to calculate the motor cooling parameters.

[0068] In some embodiments of the present application, Figure 2 As shown, in S400, the specific steps of determining the target motor system of the mining equipment according to the temperature rise simulation data may include:

[0069] S401: When the temperature rise simulation data is within a preset temperature rise range, determining that the performance parameters of the temporary motor system are the performance parameters of the target motor system of the mining equipment.

[0070] The present application determines whether the motor selection is reasonable by the temperature rise of the motor. A preset temperature rise range is pre-set. In some embodiments of the present application, the preset temperature rise range may be 70-75K. When the temperature rise simulation data is within the preset temperature rise range of 70-75K, it indicates that the motor selection of the excavation equipment is reasonable at this time, and the performance parameters of the target motor system of the excavation equipment are the performance parameters of the temporary motor system.

[0071] In some embodiments of the present application, Figure 3 As shown, the motor selection method for the above excavation equipment also includes:

[0072] S402: When the temperature rise simulation data is not within a preset temperature rise range, modify the performance parameters of the temporary motor system.

[0073] When the temperature rise simulation data is not within the preset temperature rise range of 70-75K, it means that the motor selection of the excavation equipment is unreasonable. If the motor temperature rise is greater than 75K, the motor selection is too small. At this time, the motor cannot meet the normal needs of the excavation equipment. If the motor temperature rise is less than 70K, the motor selection is too large. At this time, the motor can meet the normal needs of the excavation equipment, but it will cause power waste. In either case, it is necessary to adjust the relevant parameters of the temporary motor system, that is, the performance parameters of the temporary motor system, such as motor rated power, rated torque, rated speed, peak power, peak torque, maximum speed, voltage platform, etc.

[0074] S403: Construct a new motor simulation model based on the motor temperature rise simulation software, the model parameters of the temporary motor system, and the modified performance parameters.

[0075] Based on the model parameters of the temporary motor system and the modified performance parameters, a new motor simulation model is constructed on the motor temperature rise simulation software, and new temperature rise simulation data is obtained. According to the new temperature rise simulation data, it is judged whether the new motor temperature rise simulation data is within the preset temperature rise range of 70-75K. If the new temperature rise simulation data is within the preset temperature rise range of 70-75K, it means that the motor selection of the new excavation equipment is reasonable at this time, and the performance parameters of the target motor system of the excavation equipment are the performance parameters of the new motor system; if the new temperature rise simulation data is not within the preset temperature rise range of 70-75K, it means that the motor selection of the new excavation equipment is still unreasonable at this time, and it is necessary to continue to adjust the relevant parameters of the temporary motor system, that is, the performance parameters of the temporary motor system, until the motor selection of the excavation equipment is matched.

[0076] In some embodiments of the present application, Figure 4 As shown, in S401, when the temperature rise simulation data is within the preset temperature rise range, the specific steps of determining the performance parameters of the temporary motor system as the performance parameters of the target motor system of the mining equipment may include:

[0077] S4011: Determine the temperature rise simulation value corresponding to the highest gear of the mining equipment according to the temperature rise simulation data.

[0078] The temperature rise simulation values ​​corresponding to different gears of the excavator and the temperature rise simulation value corresponding to the highest gear are determined based on the temperature rise simulation data. The torque and power of the excavator are the largest when it is in the highest gear. Therefore, as long as the motor temperature rise of the excavator in the highest gear meets the conditions, the motor meets the requirements of the excavator.

[0079] S4012: When the temperature rise simulation value corresponding to the highest gear is within a preset temperature rise range, determining that the performance parameters of the temporary motor system are the performance parameters of the target motor system of the excavating equipment.

[0080] When the temperature rise simulation data corresponding to the highest gear is within the preset temperature rise range of 70-75K, it means that the motor selection of the excavation equipment is reasonable at this time, and the performance parameters of the target motor system of the excavation equipment are the performance parameters of the temporary motor system. When the temperature rise simulation data corresponding to the highest gear is not within the preset temperature rise range of 70-75K, it means that the motor selection of the excavation equipment is unreasonable at this time, and it is necessary to adjust the relevant parameters of the temporary motor system, that is, the performance parameters of the temporary motor system. The temperature rise simulation value corresponding to the highest gear of the excavation equipment is used to judge whether the motor selection of the excavation equipment at this time is reasonable, so as to avoid the temporary motor system failing to meet the normal operation requirements of the excavation equipment or the temporary motor system providing too much power, resulting in power waste.

[0081] In some embodiments of the present application, Figure 5 As shown, another motor selection method for excavating equipment is provided, and the method may include the following steps:

[0082] S100: Acquire performance parameters and actual working condition parameters of the excavation equipment, where the performance parameters include rotation speed, torque and power of the excavation equipment at different gears.

[0083] S200: Selecting a temporary motor system according to performance parameters of the excavation equipment, and obtaining performance parameters and model parameters of the temporary motor system.

[0084] S500: Calculate the heat generated by the temporary motor under each working condition according to the performance parameters of the temporary motor system and the actual working condition parameters of the excavation equipment.

[0085] The motor will generate heat when working, and this heat needs to be dissipated through the cooling system to maintain the normal operation of the motor. According to the performance parameters of the temporary motor system and the actual working parameters of the excavation equipment, the heat generation power of the temporary motor under each working condition is calculated. For example, taking the excavation equipment as an excavator, the heat generation power of the temporary motor under different working conditions of the excavator is calculated respectively. The working conditions of the excavator include excavation, full-load rotation, unloading, and no-load rotation. The heat generation calculation formula is:

[0086] P W =P N *(1-η) / η*P fm

[0087] In the formula,

[0088] P W is the heat generated by the motor, in kW;

[0089] P N is the rated power of the motor, in kW;

[0090] P fm The ventilation loss of the motor is related to the air volume of the motor and the circumferential speed of the fan outer circle;

[0091] η is the motor efficiency.

[0092] Motor efficiency refers to the ability to convert input electrical energy into mechanical energy under various working conditions of excavation equipment. The calculation formula for motor efficiency is:

[0093] Motor efficiency = (output power / input power)*100%

[0094] Among them, the output power is the mechanical power output by the motor, and the input power is the electrical power input by the motor.

[0095] S600: Calculate the motor temperature rise value under each working condition based on the heat generated under each working condition.

[0096] The calculation formula for the motor temperature rise is:

[0097] θ=P W / (S*K)

[0098] In the formula,

[0099] θ is the temperature rise value of the motor, in K;

[0100] P W is the heat generated by the motor, in kW;

[0101] S is the heat dissipation area of ​​the motor, in m 2 ;

[0102] K is the correction factor. The value of K varies depending on the motor cooling method. If the motor is water-cooled, K is 65. If the motor is air-cooled, K is 24.5.

[0103] Through this formula, we can calculate the relationship between the temperature rise and heat generation of the motor, and then evaluate the operating status and heat dissipation performance of the motor.

[0104] In addition, assuming that the temperature of the motor before use is the ambient temperature, the motor temperature rise θ can be expressed by the formula θ=θ2-θ1, where θ2 is the temperature of the motor after use, and θ1 is the temperature of the motor before use, that is, the ambient temperature.

[0105] S700: When the motor temperature rise value is within a preset temperature rise range, determining that the temporary motor system is a target motor system of the excavation equipment.

[0106] The calculated motor temperature rise values ​​under each working condition of the excavation equipment are compared to obtain the maximum motor temperature rise value. When the maximum motor temperature rise value is within the preset temperature rise range, it means that the temporary motor system is a motor system that matches the operating requirements of the excavation equipment. The temporary motor system is determined to be the target motor system of the excavation equipment, and the performance parameters of the temporary motor system are the performance parameters of the target motor system of the excavation equipment.

[0107] Exemplary Devices

[0108] In some embodiments of the present application, Figure 6 As shown, a motor selection device for mining equipment is provided, including: a data acquisition module 601, a modeling module 602, and a judgment module 603, wherein:

[0109] The data acquisition module 601 is used to acquire the performance parameters and actual working condition parameters of the mining equipment, and the performance parameters include the speed, torque and power of the mining equipment at different gears;

[0110] Select a temporary motor system according to the performance parameters of the excavation equipment, and obtain the performance parameters and model parameters of the temporary motor system;

[0111] The modeling module 602 is used to build a motor simulation model based on the motor temperature rise simulation software and the performance parameters and model parameters of the temporary motor system, and input the actual working condition parameters of the mining equipment into the motor simulation model to obtain temperature rise simulation data;

[0112] The judgment module 603 is used to determine the target motor system of the excavation equipment according to the temperature rise simulation data.

[0113] The motor selection device for excavating equipment provided in this embodiment belongs to the same application concept as the motor selection method for excavating equipment provided in the above embodiments of this application, and can execute the motor selection method for excavating equipment provided in any of the above embodiments of this application, and has the corresponding functional units and beneficial effects of executing the motor selection method for excavating equipment. For technical details not fully described in this embodiment, please refer to the specific processing content of the motor selection method for excavating equipment provided in the above embodiments of this application, and will not be repeated here.

[0114] Exemplary Excavation Equipment

[0115] In some embodiments of the present application, an excavation device is provided, including: a motor and a motor selection device for the excavation device described above.

[0116] Exemplary Electronic Devices

[0117] In some embodiments of the present application, an electronic device is provided, including: a memory, a processor, and a computer program stored in the memory and executable on the processor, and when the processor executes the computer program, any of the above-mentioned motor selection methods for excavating equipment is implemented.

[0118] Specifically, the electronic device may further include: a bus, a communication interface, an input device and an output device. The processor, the memory, the communication interface, the input device and the output device are interconnected through the bus. The bus may include a path to transmit information between various components of the computer system.

[0119] The processor may be a general-purpose processor, such as a general-purpose central processing unit (CPU), a microprocessor, etc., or an application-specific integrated circuit (ASIC), or one or more integrated circuits for controlling the execution of the program of the present application. It may also be a digital signal processor (DSP), an application-specific integrated circuit (ASIC), a field programmable gate array (FPGA) or other programmable logic device, a discrete gate or transistor logic device, or a discrete hardware component.

[0120] The processor may include a main processor and may also include a baseband chip, a modem, etc.

[0121] The memory stores a computer program for executing the technical solution of the present application, and may also store an operating system and other key services. Specifically, the program may include a program code, and the program code includes computer operation instructions. More specifically, the memory may include a read-only memory (ROM), other types of static storage devices that can store static information and instructions, a random access memory (RAM), other types of dynamic storage devices that can store information and instructions, a disk storage, a flash, and the like.

[0122] The computer program may be written in any combination of one or more programming languages ​​to write program code for performing the operations of the embodiments of the present specification, including object-oriented programming languages ​​such as Java, C++, etc., and conventional procedural programming languages ​​such as "C" or similar programming languages. The program code may be executed entirely on the user computing device, partially on the user device, as a separate software package, partially on the user computing device and partially on a remote computing device, or entirely on a remote computing device or server.

[0123] The input device may include a device for receiving data and information input by a user, such as a keyboard, a mouse, a camera, a scanner, a light pen, a voice input device, a touch screen, a pedometer, or a gravity sensor.

[0124] Output devices may include means that allow information to be output to a user, such as display screens, printers, speakers, etc.

[0125] The communication interface may include using any transceiver or the like to communicate with other devices or communication networks, such as Ethernet, Radio Access Network (RAN), Wireless Local Area Network (WLAN), etc.

[0126] The processor executes the program stored in the memory and calls other devices, which can be used to implement each step of the motor selection method for the excavating equipment provided in the above-mentioned embodiment of the present application.

[0127] The technical features of the above embodiments may be combined arbitrarily. To make the description concise, not all possible combinations of the technical features in the above embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0128] Those skilled in the art will appreciate that all or part of the steps in the above method can be completed by instructing related hardware through a computer program, and the program can be stored in a computer-readable storage medium, such as a read-only memory, etc. Optionally, all or part of the steps in the above embodiment can also be implemented using one or more integrated circuits. Accordingly, each module / unit in the above embodiment can be implemented in the form of hardware or in the form of a software functional module. The present disclosure is not limited to any particular form of combination of hardware and software.

[0129] Unless otherwise defined, all terms used herein have the same meaning as commonly understood by those of ordinary skill in the art to which the present disclosure belongs. It should also be understood that terms such as those defined in common dictionaries should be interpreted as having a meaning consistent with their meaning in the context of the relevant technology, and should not be interpreted in an idealized or highly formal sense, unless explicitly defined as such herein.

[0130] The above is an explanation of the present disclosure and should not be considered as a limitation thereof. Although several exemplary embodiments of the present disclosure are described, it will be readily understood by those skilled in the art that many modifications may be made to the exemplary embodiments without departing from the novel teachings and advantages of the present disclosure. Therefore, all such modifications are intended to be included within the scope of the present disclosure as defined in the claims. It should be understood that the above is an explanation of the present disclosure and should not be considered to be limited to the specific embodiments disclosed, and modifications to the disclosed embodiments and other embodiments are intended to be included within the scope of the appended claims. The present disclosure is defined by the claims and their equivalents.

Claims

1. A method for selecting a motor for an excavating device, characterized in that: The method comprises: Acquire performance parameters and actual working condition parameters of the excavation equipment, wherein the performance parameters include speed, torque and power of the excavation equipment at different gears; Selecting a temporary motor system according to the performance parameters of the excavation equipment, and obtaining performance parameters and model parameters of the temporary motor system; Building a motor simulation model based on motor temperature rise simulation software and the performance parameters and model parameters of the temporary motor system, and inputting the actual operating parameters of the mining equipment into the motor simulation model to obtain temperature rise simulation data; A target motor system of the excavating equipment is determined according to the temperature rise simulation data.

2. The motor selection method for excavating equipment according to claim 1, characterized in that: Determining the target motor system of the mining equipment according to the temperature rise simulation data includes: When the temperature rise simulation data is within a preset temperature rise range, the performance parameters of the temporary motor system are determined to be the performance parameters of the target motor system of the excavating equipment.

3. The motor selection method for excavating equipment according to claim 2, characterized in that: The method further comprises: When the temperature rise simulation data is not within a preset temperature rise range, modifying the performance parameters of the temporary motor system; and A new motor simulation model is constructed based on the motor temperature rise simulation software and the model parameters of the temporary motor system and the modified performance parameters to obtain new temperature rise simulation data.

4. The motor selection method for excavating equipment according to claim 2, characterized in that: When the temperature rise simulation data is within a preset temperature rise range, determining the performance parameters of the temporary motor system as the performance parameters of the target motor system of the excavating equipment comprises: Determine a temperature rise simulation value corresponding to the highest gear of the mining equipment according to the temperature rise simulation data; When the temperature rise simulation value corresponding to the highest gear is within the preset temperature rise range, the performance parameters of the temporary motor system are determined to be the performance parameters of the target motor system of the excavating equipment.

5. The motor selection method for excavating equipment according to claim 2, characterized in that: The preset temperature rise range is: 70-75K.

6. The motor selection method for excavating equipment according to claim 1, characterized in that: The method further comprises: Calculating the heat generated by the temporary motor under each working condition according to the performance parameters of the temporary motor system and the actual working condition parameters of the excavation equipment; and Calculate the motor temperature rise value under each working condition based on the heat generated under each working condition; When the motor temperature rise value is within a preset temperature rise range, the performance parameter of the temporary motor system is determined to be the performance parameter of the target motor system of the excavating equipment.

7. The motor selection method for excavating equipment according to claim 1, characterized in that: The performance parameters of the temporary motor system include: current values ​​corresponding to torques at different gears, and losses of various components of the motor under various working conditions.

8. The motor selection method for excavating equipment according to claim 1, characterized in that: The model parameters include: the size value of each component in the three-dimensional model of the motor, the thermal conductivity of each component of the motor, the motor specific heat capacity, the number of turns of the motor coil, the motor wire diameter, and the motor cooling parameters.

9. A motor selection device for excavating equipment, characterized in that: include: A data acquisition module, the data acquisition module is used to obtain performance parameters and actual working condition parameters of the excavation equipment, the performance parameters including the speed, torque and power of the excavation equipment at different gears; Selecting a temporary motor system according to the performance parameters of the excavation equipment, and obtaining performance parameters and model parameters of the temporary motor system; A modeling module, the modeling module is used to build a motor simulation model based on the motor temperature rise simulation software and the performance parameters and model parameters of the temporary motor system, and input the actual working condition parameters of the mining equipment into the motor simulation model to obtain temperature rise simulation data; A judgment module is used to determine a target motor system of the excavating equipment according to the temperature rise simulation data.

10. An excavation device, characterized in that: include: A motor and a motor selection device for excavating equipment as claimed in claim 9.

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