Industrial vehicle energy consumption and heat balance integrated test system and test method

Abstract

The invention discloses an industrial vehicle energy consumption and heat balance integrated test system and test method. Relates to the field of vehicle testing, and solves the problem of measurement result deviation caused by unstable experimental environment conditions during energy consumption testing and heat balance testing of industrial vehicles. The driving wheels of the vehicle to be tested are arranged above the rotary drum device, and the running road condition is simulated through the rotary drum device, so that the uncertainty and complexity in the actual road test are avoided; the steering angle of a to-be-measured vehicle is determined through the laser range finder, and the upper computer simulates the differential condition of the vehicle during steering by adjusting the differential of the rotary drum device; the test is carried out in the environment chamber, and the collected running information of the vehicle is not influenced by irrelevant environment information, so that the accuracy is improved; besides, the preset environment conditions are simulated through the environment simulation system, different weather conditions can be simulated, the stability of the tested environment conditions can still be guaranteed through multiple cyclic tests, interference of irrelevant information is avoided, and evaluation of the comprehensive performance of the vehicle is facilitated.

Description

Technical Field

[0001] The present application relates to the field of vehicle testing, and in particular to an integrated testing system and method for energy consumption and thermal balance of industrial vehicles. Background Art

[0002] The background technology of industrial vehicle energy consumption testing and thermal balance testing stems from the urgent need to improve energy efficiency and vehicle safety worldwide.

[0003] In traditional industrial vehicle energy consumption and thermal balance testing, actual vehicles are driven on test roads to collect vehicle data for energy consumption and thermal balance analysis. However, during testing, vehicle operation is subject to interference from various factors, leading to measurement deviations. For example, during energy consumption testing, wind speed fluctuations, temperature effects, and varying driver operating habits can affect the test process, making it difficult to maintain a consistent experimental environment during the cycle test and accurately measuring the energy consumption of industrial vehicles under different operating conditions.

[0004] It can be seen that when industrial vehicles are undergoing energy consumption tests and thermal balance tests, unstable experimental environment conditions lead to deviations in measurement results, which is a technical problem that needs to be urgently solved by people in this field. Summary of the Invention

[0005] The purpose of this application is to provide an integrated test system and test method for energy consumption and thermal balance of industrial vehicles, so as to solve the problem that the experimental environment conditions are unstable during energy consumption testing and thermal balance testing of industrial vehicles, resulting in deviations in measurement results.

[0006] To solve the above technical problems, the present application provides an integrated test system for energy consumption and thermal balance of industrial vehicles, comprising: a host computer, an environmental chamber, a test platform arranged in the environmental chamber, a rotating drum device, a laser rangefinder including two laser ranging points, an angle plate, an environmental simulation system, and a temperature data acquisition system arranged on the vehicle to be tested;

[0007] The test platform is used to park the vehicle to be tested; the environmental simulation system is used to simulate preset environmental conditions; the temperature data acquisition system is used to collect temperature information of the vehicle to be tested;

[0008] The drum device is arranged at the front end of the test platform, and the driving wheel of the vehicle to be tested is placed above it. The drum device is used to simulate the running road conditions;

[0009] The angle disc is arranged on the steering wheel hub of the vehicle to be tested, and the laser rangefinder is arranged on the test platform, for collecting real-time distance data of two laser ranging points from the angle disc and obtaining the steering angle;

[0010] The host computer is connected to the drum device, laser rangefinder, environmental simulation system, temperature data acquisition system, and the vehicle to be tested, and is used to control the operation of the drum device and the environmental simulation system according to preset road spectrum information, adjust the drum device according to the steering angle, control the operation of the vehicle to be tested according to preset working conditions, and obtain test data and temperature information of the vehicle to be tested.

[0011] As an optional solution, in the above-mentioned industrial vehicle energy consumption and heat balance integrated test system, the environmental simulation system includes: a wind tunnel, a constant temperature and humidity equipment;

[0012] The air outlet of the wind tunnel faces the vehicle to be tested, and is used to simulate the air flow environment under different wind speed conditions;

[0013] The constant temperature and humidity equipment is arranged in the environmental chamber and is used to adjust the temperature and humidity in the environmental chamber.

[0014] As an optional solution, in the above-mentioned industrial vehicle energy consumption and heat balance integrated test system, the number of the laser rangefinders is two; the laser rangefinder includes: a mobile track, a mobile rangefinder;

[0015] The two movable tracks are respectively arranged on two sides of the test platform and are parallel to the body direction of the vehicle to be tested;

[0016] The mobile distance meter is arranged on the mobile track, moves along the mobile track, and includes two laser distance measuring points.

[0017] As an optional solution, in the above industrial vehicle energy consumption and thermal balance integrated test system, the test platform is further provided with: a force sensor; the force sensor is connected to the host computer;

[0018] The force sensor is located below the wheel of the vehicle to be tested, and is used to collect the gravity value of the vehicle to be tested on the test platform and send it to the host computer.

[0019] As an optional solution, the above-mentioned industrial vehicle energy consumption and heat balance integrated test system further includes: an anti-dumping device;

[0020] The anti-dumping device is fixed on the test platform, and the vehicle to be tested is fixed on the test platform through the anti-dumping device.

[0021] As an optional solution, in the above-mentioned integrated test system for energy consumption and thermal balance of industrial vehicles, the drum device includes: a first roller pair, a second roller pair, a first drive motor, a second drive motor, a speed sensor, and a torque sensor; the first roller pair and the second roller pair both include front rollers and rear rollers;

[0022] The first roller pair is connected to the first drive motor, and the second roller pair is connected to the second drive motor; the first drive motor, the second drive motor, the speed sensor, and the torque sensor are connected to the host computer.

[0023] The speed sensor and the torque sensor are respectively installed on the first roller pair and the second roller pair, and are used to monitor the speed information and torque information of the roller pair in real time, and transmit the speed information and torque information to the host computer.

[0024] To solve the above technical problems, the present application also provides an integrated test method for energy consumption and thermal balance of industrial vehicles, which is applied to an integrated test system for energy consumption and thermal balance of industrial vehicles. The integrated test system for energy consumption and thermal balance of industrial vehicles includes: a host computer, an environmental chamber, and a test platform, a rotating drum device, a laser rangefinder including two laser ranging points, an angle plate, an environmental simulation system, and a temperature data acquisition system arranged in the environmental chamber; the test platform is used to park the vehicle to be tested; the rotating drum device is arranged at the front end of the test platform, the driving wheel of the vehicle to be tested is placed above it, the angle plate is arranged on the steering wheel hub of the vehicle to be tested, the laser rangefinder is arranged on the side of the vehicle to be tested, and the environmental simulation system is used to simulate preset environmental conditions; the temperature data acquisition system is used to collect temperature information inside the vehicle to be tested; the host computer is connected to the rotating drum device, the laser rangefinder, the environmental simulation system, the temperature data acquisition system, and the vehicle to be tested;

[0025] The method comprises:

[0026] Receive preset road spectrum information and preset working conditions;

[0027] Controlling the drum device to simulate operating road conditions according to the preset road spectrum information;

[0028] Obtaining a steering angle based on real-time distance data between the two laser distance measuring points of the laser rangefinder and the angle disc and adjusting the drum device based on the steering angle;

[0029] Controlling the operation of the vehicle to be tested according to a preset working condition, and collecting test data of the vehicle to be tested under a cycle test as energy consumption test data;

[0030] The environment simulation system is controlled to run and the vehicle to be tested is controlled to run according to a preset working condition, and the temperature data of the temperature data acquisition system is collected as thermal balance test data.

[0031] As an optional solution, in the above-mentioned integrated test method for energy consumption and heat balance of industrial vehicles, controlling the drum device to simulate operating road conditions according to the preset road spectrum information includes:

[0032] Extracting vehicle speed information, load information, steering angle information, and running time information from the preset road spectrum information;

[0033] determining the rotation speed information and torque information of the drum device according to the vehicle speed information, the load information, and the steering angle information;

[0034] The rotating drum device is controlled according to the rotation speed information, the torque information, and the operating time information.

[0035] As an optional solution, in the above-mentioned integrated test method for energy consumption and heat balance of industrial vehicles, obtaining the steering angle based on real-time distance data between the two laser ranging points of the laser rangefinder and the angle disk and adjusting the drum device according to the steering angle includes:

[0036] receiving real-time distance data between the two laser ranging points of the laser rangefinder and the angle disc;

[0037] Determining a steering angle of the vehicle to be tested according to the real-time distance data;

[0038] The differential speed of the drum device is determined according to the steering angle, and the rotation speed information of the drum device is adjusted according to the differential speed.

[0039] As an optional solution, in the above-mentioned integrated test method for energy consumption and heat balance of industrial vehicles, controlling the operation of the vehicle to be tested according to a preset working condition includes:

[0040] Controlling the accelerator pedal of the vehicle to be tested to make the vehicle to be tested move according to a preset working condition;

[0041] Controlling a shift switch of the vehicle to be tested to shift gears of the vehicle to be tested;

[0042] Controlling the hydraulic solenoid proportional valve of the vehicle to be tested to lift and lower the load-bearing plate of the vehicle to be tested;

[0043] The steering valve of the vehicle to be tested is controlled to steer the vehicle to be tested.

[0044] The present application provides an integrated testing system for energy consumption and thermal balance of industrial vehicles. The driving wheels of the vehicle to be tested are placed above a rotating drum device, and the rotating drum device is used to simulate operating road conditions. There is no need to drive the vehicle on a real route, thus avoiding the uncertainty and complexity of actual road testing. The steering angle of the steering wheel of the vehicle to be tested is determined by a laser rangefinder and fed back to a host computer. The host computer can adjust the differential speed of the rotating drum device to simulate the differential speed of the vehicle when turning, thereby ensuring the accuracy of the steering working conditions. The test is carried out in an environmental chamber, and the collected vehicle operating information is not affected by irrelevant environmental information, thereby reducing deviations in energy consumption analysis and improving accuracy. In addition, the environmental simulation system simulates preset environmental conditions, which can simulate different climatic conditions. The temperature data acquisition system in the vehicle to be tested collects temperature information of different areas of the vehicle under various environments. Multiple cycle tests can still ensure the stability of the test environmental conditions, avoid interference from irrelevant information, and help evaluate the comprehensive performance of the vehicle.

[0045] In addition, the present application also provides an integrated testing method for energy consumption and thermal balance of industrial vehicles, which corresponds to the above-mentioned integrated testing system for energy consumption and thermal balance of industrial vehicles and has the same effect as above. BRIEF DESCRIPTION OF THE DRAWINGS

[0046] In order to more clearly illustrate the embodiments of the present application, the following is a brief introduction to the drawings required for use in the embodiments. 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 any creative work.

[0047] Figure 1 A schematic diagram of an integrated testing system for energy consumption and thermal balance of industrial vehicles provided in an embodiment of the present application;

[0048] Figure 2 A schematic diagram of another integrated testing system for energy consumption and thermal balance of industrial vehicles provided in an embodiment of the present application;

[0049] Figure 3 A schematic diagram of another integrated testing system for energy consumption and thermal balance of industrial vehicles provided in an embodiment of the present application;

[0050] Figure 4 This is a flow chart of an integrated testing method for energy consumption and thermal balance of industrial vehicles provided in an embodiment of the present application.

[0051] Reference numerals:

[0052] Environmental chamber 10, test platform 11, rotating drum device 12, laser rangefinder 13, angle plate 14, wind tunnel 15, constant temperature and humidity equipment 16, force sensor 17, anti-dumping device 18, first drive motor 121, second drive motor 122, and moving track 131. DETAILED DESCRIPTION

[0053] The following will be combined with the accompanying drawings in the embodiments of this application to clearly and completely describe the technical solutions in the embodiments of this application. Obviously, the embodiments described are only part of the embodiments of this application, not all of them. Based on the embodiments in this application, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of this application.

[0054] The core of this application is to provide an integrated testing system and method for energy consumption and thermal balance of industrial vehicles.

[0055] In order to enable those skilled in the art to better understand the present application, the present application is further described in detail below with reference to the accompanying drawings and specific implementation methods.

[0056] This application can be used to evaluate key performance indicators of a vehicle, such as energy consumption, power output, and thermal balance, during the vehicle research and development and design phase. By accurately simulating different driving conditions and environmental conditions, potential design problems can be discovered and resolved in a timely manner, and vehicle performance can be optimized. Through the environmental simulation system, different climate conditions, such as high temperature, low temperature, and high humidity, can be simulated in the laboratory. This enables the test device to comprehensively evaluate the performance of the vehicle in various environments, providing more comprehensive data support for the design optimization and operation management of the vehicle. Testing is carried out in a closed laboratory environment to ensure that the test process is not interfered with by external environmental factors. This environment can effectively reduce the impact of external factors such as wind speed and temperature changes on the test results, and improve the accuracy and repeatability of the test. It provides a scientific basis for the design optimization, performance improvement, and operation management of industrial vehicles, and helps to improve the energy efficiency and operational stability of the vehicle.

[0057] Taking electric forklifts as an example, in order to solve the problems of inaccurate energy consumption measurement, incomplete thermal balance testing, inaccurate test condition simulation, low data acquisition and analysis efficiency, insufficient test safety and reliability, lack of standardized test procedures, and insufficient basis for optimized design and operation management, the present application embodiment provides an integrated test system for energy consumption and thermal balance of industrial vehicles, such as Figure 1 As shown, it includes: a host computer, an environmental chamber 10, a test platform 11 arranged in the environmental chamber 10, a rotating drum device 12, a laser rangefinder 13 including two laser ranging points, an angle plate 14, an environmental simulation system, and a temperature data acquisition system arranged on the vehicle to be tested;

[0058] The test platform 11 is used to park the vehicle to be tested; the environmental simulation system is used to simulate the preset environmental conditions; the temperature data acquisition system is used to collect the temperature information of the vehicle to be tested;

[0059] The drum device 12 is arranged at the front end of the test platform 11, and the driving wheel of the vehicle to be tested is placed on it. The drum device 12 is used to simulate the running road conditions;

[0060] The angle disc 14 is set on the steering wheel hub of the vehicle to be tested, and the laser rangefinder 13 is set on the test platform 11 to collect real-time distance data from two laser ranging points to the angle disc 14 and obtain the steering angle;

[0061] The host computer is connected to the drum device 12, the laser rangefinder 13, the environmental simulation system, the temperature data acquisition system, and the vehicle to be tested, and is used to control the operation of the drum device 12 and the environmental simulation system according to the preset road spectrum information, adjust the drum device 12 according to the steering angle, control the operation of the vehicle to be tested according to the preset working conditions, and obtain test data and temperature information of the vehicle to be tested.

[0062] like Figure 2 、 3 As shown, the test platform 11 of this embodiment is the foundation of the entire device and is used to park the vehicle under test. It must possess sufficient stability and load-bearing capacity to ensure that the vehicle does not shift or tilt during testing. The design of the test platform 11 typically takes into account vehicles of varying models and tonnages to enhance the device's versatility. For example, the test platform 11 needs to be flexible enough to accommodate both small forklifts and large warehouse trucks.

[0063] The rotating drum 12 is located at the front end of the test platform 11, with the vehicle's drive wheels positioned above it. By simulating different driving speeds and road conditions, the rotating drum 12 accurately replicates the various operating conditions experienced by the vehicle in actual operation. For example, when testing a vehicle's climbing performance, the rotating drum 12 can simulate an uphill section by increasing resistance. When testing a vehicle's braking performance, the rotating drum 12 can rapidly decelerate to simulate an emergency braking situation. Furthermore, the rotating drum 12 features a differential speed adjustment function, adjusting the drum's differential speed based on the vehicle's steering angle to simulate the actual conditions of a vehicle turning.

[0064] The laser rangefinder 13 includes two laser ranging points for measuring the angular changes of the vehicle's steering wheel. An angle disc 14 is mounted on the wheel hub of the vehicle's steering wheel. The laser rangefinder 13 measures the distances from the two ranging points to the angle disc 14 to calculate the vehicle's steering angle in real time. For example, when testing a vehicle's steering maneuverability, accurately measuring the steering angle can determine whether the vehicle's steering response meets design requirements at different speeds. The angle disc 14, mounted on the wheel hub of the vehicle's steering wheel, serves as a reference for the laser rangefinder 13. It provides precise information on the steering angle, assisting the laser rangefinder 13 in its measurements.

[0065] The environmental simulation system can simulate various preset environmental conditions, such as varying temperatures, humidity, and wind speeds. In actual operation, vehicles may encounter a variety of complex climates, and the environmental simulation system ensures that tests are conducted under these conditions. For example, a vehicle's heat dissipation performance can be tested in high-temperature environments, or its starting performance can be tested in low-temperature environments. By simulating these environmental conditions, a comprehensive assessment of vehicle performance in different climates can be made, providing important insights for vehicle design optimization.

[0066] A temperature data acquisition system, installed on the vehicle under test, collects real-time temperature information from various areas of the vehicle. This is crucial for evaluating the vehicle's overall performance. For example, during vehicle operation, the motor, battery, and cooling system generate significant heat. The temperature data acquisition system monitors the temperature changes of these key components in real time. By analyzing this data, the vehicle's cooling design can be optimized to ensure reliability and performance in high-temperature environments.

[0067] The host computer is the core control unit of the entire test apparatus, connecting to the rotating drum device 12, the laser rangefinder 13, the environmental simulation system, the temperature data acquisition system, and the vehicle under test. Based on preset road profile information and operating conditions, the host computer controls the operation of the rotating drum device 12 and the environmental simulation system. It also adjusts the differential speed of the rotating drum device 12 based on real-time steering angle data. The host computer also collects and analyzes various data generated during the test and generates detailed test reports.

[0068] The host computer, acting as the control center, controls the drum device 12 to simulate different road conditions based on preset road profile information and operating conditions. It monitors the vehicle's steering angle in real time using a laser rangefinder 13 and an angle disc 14, and adjusts the differential speed of the drum device 12 based on this data. Simultaneously, the environmental simulation system simulates different climate environments based on preset conditions, and the temperature data acquisition system collects real-time temperature information inside the vehicle. All collected data is processed and analyzed by the host computer to generate a detailed test report.

[0069] In the integrated test system for energy consumption and thermal balance of industrial vehicles provided in the embodiment of the present application, the driving wheels of the vehicle to be tested are placed above the drum device 12. The drum device 12 simulates the operating road conditions, and there is no need to drive the vehicle on a real route, thus avoiding the uncertainty and complexity in actual road testing. The steering angle of the steering wheel of the vehicle to be tested is determined by the laser rangefinder 13 and fed back to the host computer. The host computer can adjust the differential speed of the drum device 12 to simulate the differential speed of the vehicle when turning, thereby ensuring the accuracy of the steering working condition. The test is carried out in the environmental chamber 10, and the collected vehicle operating information is not affected by irrelevant environmental information, thereby reducing the deviation in energy consumption analysis and improving accuracy. In addition, the preset environmental conditions are simulated by the environmental simulation system, and different climatic conditions can be simulated. The temperature data acquisition system in the vehicle to be tested collects temperature information of different areas of the vehicle under various environments. Multiple cycle tests can still ensure the stability of the test environmental conditions, avoid interference from irrelevant information, and help evaluate the comprehensive performance of the vehicle.

[0070] According to the above embodiment, specifically, the environmental simulation system includes: a wind tunnel 15, a constant temperature and humidity device 16;

[0071] The air outlet of the wind tunnel 15 is facing the vehicle to be tested, and is used to simulate the air flow environment under different wind speed conditions;

[0072] The constant temperature and humidity device 16 is disposed in the environmental chamber 10 and is used to adjust the temperature and humidity in the environmental chamber 10 .

[0073] Wind tunnel 15 is part of the environmental simulation system and is used to simulate the air flow environment under different wind speed conditions. The air outlet of wind tunnel 15 is facing the vehicle under test to ensure that the wind can act directly on the vehicle. This design can simulate various wind speed conditions encountered by the vehicle during actual driving, including tailwind, headwind and crosswind. Wind tunnel 15 has an adjustable wind speed function and can simulate various wind speed conditions from breeze to strong wind. This is crucial for evaluating the driving stability and aerodynamic performance of the vehicle at different wind speeds. For example, when testing the wind resistance of a vehicle, the wind speed can be adjusted to simulate the driving state of the vehicle under strong wind conditions.

[0074] Another important function of Wind Tunnel 15 is simulating a vehicle's stability in strong winds. In extreme weather conditions, such as typhoons or sandstorms, a vehicle's wind resistance is crucial for ensuring driving safety. Through Wind Tunnel 15 testing, engineers can assess a vehicle's handling in strong winds and promptly identify and address potential design issues. For example, if Wind Tunnel 15 testing reveals vehicle instability in strong winds, engineers can optimize the vehicle's body structure or aerodynamic design, improving the air ducts and enhancing heat dissipation.

[0075] The constant temperature and humidity device 16 is responsible for regulating the temperature and humidity within the environmental chamber 10. In actual testing, the constant temperature and humidity device 16 can precisely control the temperature and humidity conditions within the environmental chamber 10, simulating a variety of climates, from high to low temperatures, and from dry to humid. This is crucial for evaluating vehicle performance in different environments.

[0076] In high-temperature environments, the performance of a vehicle's cooling system is crucial for ensuring proper operation. By simulating high-temperature conditions with constant temperature and humidity equipment16, engineers can assess whether the vehicle's cooling system can effectively operate in extreme heat, thereby optimizing the cooling system's design. For example, if high-temperature testing reveals deficiencies in the vehicle's cooling system, engineers can increase the radiator's heat dissipation area, optimize the coolant circulation path, or adjust the cooling fan speed to improve heat dissipation efficiency.

[0077] In high-humidity environments, a vehicle's electrical and braking systems may be affected by humidity. By simulating high-humidity conditions with constant temperature and humidity equipment 16, engineers can evaluate the performance of a vehicle's electrical and braking systems in humid environments. For example, if a vehicle's braking system exhibits reduced effectiveness during high-humidity testing, engineers can optimize the braking system, such as replacing brake components with better moisture-resistant ones or refining the brake system's seal design, to improve braking system reliability.

[0078] The coordinated operation of the wind tunnel 15 and the constant temperature and humidity equipment 16 provides a comprehensive and precise testing environment for vehicle performance testing. The wind tunnel 15 simulates air flow conditions under varying wind speeds, while the constant temperature and humidity equipment 16 regulates the temperature and humidity within the environmental chamber 10. These functions enable the environmental simulation system to comprehensively evaluate vehicle performance in various environments, providing a scientific basis for vehicle design optimization and performance enhancement. Through the proper design and use of the environmental simulation system, engineers can improve test accuracy, reduce test uncertainty and error, and adapt to diverse testing requirements, thereby providing strong support for the design and optimization of industrial vehicles.

[0079] According to the above embodiment, specifically, the number of the laser rangefinder 13 is two; the laser rangefinder 13 includes: a moving track 131, a moving rangefinder;

[0080] Two movable rails 131 are respectively provided on two sides of the test platform 11 and are parallel to the body direction of the vehicle to be tested;

[0081] The mobile rangefinder is arranged on the mobile track 131 and can move along the mobile track 131 . The mobile rangefinder includes two laser ranging points.

[0082] Two mobile tracks 131 are located on either side of the test platform 11, parallel to the vehicle's body. This layout ensures that the laser rangefinder 13 can measure from both sides of the vehicle, covering the entire range of motion during vehicle steering. The mobile rangefinder is mounted on the mobile tracks 131 and can move along them. This design allows the laser rangefinder 13 to flexibly adjust its measurement position based on changes in vehicle size and steering angle, thereby achieving more accurate measurements.

[0083] Each mobile rangefinder includes two laser ranging points. These two points can simultaneously measure the distance change between the vehicle's steering wheel and the angle plate 14. Using data from these two ranging points, the vehicle's steering angle can be calculated, providing accurate data support for evaluating the vehicle's steering performance.

[0084] When testing the steering performance of a vehicle, the laser rangefinder 13 of this embodiment can provide real-time feedback on the vehicle's steering angle, which provides important data support for evaluating the vehicle's performance under different steering conditions, such as turning radius, steering flexibility, and steering stability.

[0085] According to the above embodiment, specifically, the test platform 11 is further provided with: a force sensor 17; the force sensor 17 is connected to the host computer;

[0086] The force sensor 17 is located under the wheel of the vehicle to be tested, and is used to collect the gravity value of the vehicle to be tested on the test platform 11 and send it to the host computer.

[0087] In this embodiment, force sensor 17 is an important component for monitoring the gravity distribution and stability of the vehicle on test platform 11. When simulating complex road conditions, especially when simulating complex conditions such as uphill, downhill, and cornering, force sensor 17 can monitor the changes in gravity of the vehicle in real time.

[0088] The primary function of force sensor 17 is to collect real-time gravity measurements of the vehicle under test on test platform 11. These gravity measurements reflect the contact forces between the vehicle's wheels and the test platform 11 and are crucial for assessing vehicle stability and load distribution. The collected gravity values ​​are transmitted via a signal transmission line to a host computer, which processes and analyzes the received data in real time. This real-time data transmission and analysis capability enables the test device to promptly identify potential stability issues or uneven load distribution during vehicle testing.

[0089] By monitoring the vehicle's gravity distribution, the force sensor 17 ensures the vehicle's stability during testing. If abnormal gravity changes are detected, the host computer can promptly issue an alarm or take measures, such as an emergency stop, to prevent the vehicle from tipping over or damaging the test equipment.

[0090] According to the above embodiment, specifically, it further includes: an anti-dumping device 18;

[0091] The anti-dumping device 18 is fixed on the test platform 11 , and the vehicle to be tested is fixed on the test platform 11 through the anti-dumping device 18 .

[0092] Anti-tipping device 18 is fixed to test platform 11. Its design purpose is to provide additional stability during testing, ensuring that the vehicle does not tip over due to external forces or changes in its center of gravity. During testing, the vehicle may be affected by various external forces, such as the differential speed of the rotating drum device 12, the wind force of the wind tunnel 15, or changes in the vehicle's center of gravity. Anti-tipping device 18 provides additional support to ensure vehicle stability.

[0093] This securing method can be mechanical, such as using straps, brackets, or other mechanical devices, or electronic, such as through electromagnetic locks or other electronic securing devices. The anti-tipping device 18 is generally designed to accommodate vehicles of varying sizes and tonnages. Whether a small forklift or a large warehouse truck, the anti-tipping device 18 can be securely secured to the test platform 11, providing additional stability and ensuring safety and reliability during the test process.

[0094] According to the above embodiment, specifically, the drum device 12 includes: a first roller pair, a second roller pair, a first drive motor 121, a second drive motor 122, a speed sensor, and a torque sensor; the first roller pair and the second roller pair both include a front roller and a rear roller;

[0095] The first roller pair is connected to the first drive motor, and the second roller pair is connected to the second drive motor; the first drive motor, the second drive motor, the speed sensor, and the torque sensor are connected to the host computer.

[0096] The speed sensor and torque sensor are installed on the first roller pair and the second roller pair respectively, and are used to monitor the speed information and torque information of the roller pair in real time, and transmit the speed information and torque information to the host computer.

[0097] Both the first and second roller pairs include front and rear rollers. This design simulates the operation of a vehicle's front and rear wheels under different road conditions. The roller pairs support the vehicle's drive wheels and, through control of the drive motors, simulate varying driving speeds and load conditions.

[0098] The first roller pair is connected to the first drive motor, and the second roller pair is connected to the second drive motor. The drive motors drive the roller pairs through a gear transmission. Based on commands from the host computer, the drive motors control the speed and torque of the roller pairs to simulate vehicle driving under different road conditions. For example, when simulating an uphill slope, the drive motor can increase torque output; when simulating high-speed driving, the drive motor can increase speed.

[0099] A speed sensor and torque sensor are installed on the first and second roller pairs, respectively. The speed sensor monitors the roller pair's speed in real time, while the torque sensor monitors the roller pair's torque in real time. These sensors transmit the data to the host computer, which controls the drive motor based on this data, ensuring test accuracy and consistency.

[0100] The data provided by the drum device 12 can be used to optimize the vehicle's power system, steering system, and energy management system, thereby improving the vehicle's performance and reliability. For example, the energy consumption test data can be used to optimize the vehicle's energy management system and improve energy efficiency.

[0101] The embodiment of the present application also provides an integrated test method for energy consumption and thermal balance of industrial vehicles, which is applied to an integrated test system for energy consumption and thermal balance of industrial vehicles. The integrated test system for energy consumption and thermal balance of industrial vehicles includes: a host computer, an environmental chamber 10, and a test platform 11, a rotating drum device 12, a laser rangefinder 13 including two laser ranging points, an angle plate 14, an environmental simulation system, and a temperature data acquisition system arranged in the vehicle to be tested. The test platform 11 is used to park the vehicle to be tested. The rotating drum device 12 is arranged at the front end of the test platform 11, with the driving wheel of the vehicle to be tested placed above it, the angle plate 14 is arranged on the steering wheel hub of the vehicle to be tested, the laser rangefinder 13 is arranged on the side of the vehicle to be tested, and the environmental simulation system is used to simulate preset environmental conditions. The temperature data acquisition system is used to collect temperature information inside the vehicle to be tested. The host computer is connected to the rotating drum device 12, the laser rangefinder 13, the environmental simulation system, the temperature data acquisition system, and the vehicle to be tested.

[0102] like Figure 4 As shown, the method includes:

[0103] S11: Receive preset road spectrum information and preset working conditions;

[0104] S12: Controlling the drum device to simulate operating road conditions according to preset road spectrum information;

[0105] S13: Obtaining a steering angle based on real-time distance data between the two laser distance measuring points of the laser rangefinder and the angle disk, and adjusting the drum device according to the steering angle;

[0106] S14: controlling the operation of the vehicle under test according to a preset working condition, and collecting test data of the vehicle under test under a cycle test as energy consumption test data;

[0107] S15: Control the operation of the environmental simulation system and control the operation of the vehicle to be tested according to the preset working conditions, and collect temperature data from the temperature data collection system as thermal balance test data.

[0108] Before testing begins, technicians input preset road profile information and operating conditions into the host computer. This information includes vehicle speed, load conditions, steering angle, and environmental conditions. Based on this preset road profile information, the host computer controls the speed and torque of the drum device 12 to simulate the vehicle's driving state under different road conditions. For example, when simulating an uphill slope, the drum device 12 increases torque output; when simulating high-speed driving, the drum device 12 increases speed. By precisely controlling the drum device 12, the vehicle's performance under various actual driving conditions can be simulated, providing reliable data support for energy consumption and power performance testing.

[0109] The laser rangefinder 13 measures the distance between the vehicle's steering wheel and the angle disc 14 in real time, calculating the vehicle's steering angle. Based on this data, the host computer adjusts the differential speed of the drum device 12 to simulate the vehicle's differential speed during a turn. By monitoring and adjusting the steering angle in real time, the vehicle's steering performance can be accurately assessed, ensuring the accuracy and reliability of the steering test.

[0110] The host computer controls the operation of the vehicle under test according to the preset working conditions, including the operation of the accelerator pedal and gear shift switch. At the same time, it collects the energy consumption data of the vehicle under the cycle test, such as motor speed, current, voltage, and power.

[0111] The host computer controls the operation of the environmental simulation system to simulate different climate conditions, such as high temperature, low temperature, high humidity, etc. At the same time, it collects temperature data inside the vehicle to evaluate the overall performance of the vehicle.

[0112] When testing a vehicle's energy consumption, this embodiment uses the rotating drum device 12 to control speed and torque to simulate the vehicle's energy consumption under varying speeds and loads. This precise control and monitoring allows for accurate assessment of the vehicle's energy efficiency. When testing the vehicle's overall performance, the environmental simulation system simulates various climate conditions to assess the vehicle's heat dissipation performance under varying circumstances.

[0113] According to the integrated testing method for energy consumption and thermal balance of industrial vehicles provided in the embodiment of the present application, the driving wheels of the vehicle to be tested are placed above the drum device 12. The drum device 12 simulates the operating road conditions, and there is no need to drive the vehicle on a real route, thus avoiding the uncertainty and complexity in actual road testing. The steering angle of the steering wheel of the vehicle to be tested is determined by the laser rangefinder 13 and fed back to the host computer. The host computer can adjust the differential speed of the drum device 12 to simulate the differential speed of the vehicle when turning, thereby ensuring the accuracy of the steering working condition. The test is carried out in the environmental chamber 10, and the collected vehicle operating information is not affected by irrelevant environmental information, thereby reducing the deviation in energy consumption analysis and improving accuracy. In addition, the preset environmental conditions are simulated by the environmental simulation system, and different climatic conditions can be simulated. The temperature data acquisition system in the vehicle to be tested collects temperature information of different areas of the vehicle under various environments. Multiple cycle tests can still ensure the stability of the test environmental conditions, avoid interference from irrelevant information, and help evaluate the comprehensive performance of the vehicle.

[0114] According to the above embodiment, specifically, controlling the drum device 12 to simulate the road condition according to the preset road spectrum information includes:

[0115] Extract vehicle speed information, load information, steering angle information, and running time information from preset road spectrum information;

[0116] Determine the speed information and torque information of the drum device 12 according to the vehicle speed information, load information, and steering angle information;

[0117] The drum device 12 is controlled according to the rotation speed information, the torque information, and the running time information.

[0118] Vehicle speed information reflects the vehicle's travel speed under different operating conditions. By extracting this information, the speed range and variations that the drum device 12 needs to simulate can be determined. Load information reflects the vehicle's load under different operating conditions. By extracting this information, the torque range and variations that the drum device 12 needs to simulate can be determined. Steering angle information reflects the vehicle's steering behavior under different operating conditions. By extracting this information, the differential speed range and variations that the drum device 12 needs to simulate can be determined. Run time information reflects the duration of the vehicle under different operating conditions. By extracting this information, the time range and variations that the drum device 12 needs to simulate can be determined.

[0119] Based on the vehicle speed information, the rotation speed that the drum device 12 needs to reach is calculated. For example, if the vehicle speed in the preset road spectrum information is 30km / h, the drum device 12 needs to adjust the rotation speed through the drive motor to simulate this speed. Based on the load information, the torque that the drum device 12 needs to output is calculated. For example, if the vehicle load in the preset road spectrum information is fully loaded, the drum device 12 needs to increase the torque output through the drive motor to simulate the driving state of the vehicle under full load. Based on the steering angle information, the differential speed of the drum device 12 is adjusted. For example, if the steering angle of the vehicle in the preset road spectrum information is 30 degrees, the drum device 12 needs to simulate the differential speed of the vehicle at this steering angle through the differential speed adjustment function.

[0120] Based on the calculated speed information, the host computer controls the speed of the drive motor to ensure that the drum device 12 reaches a preset speed. For example, if the calculated speed is 1000 rpm, the host computer sends a command to the drive motor to achieve this speed. Based on the calculated torque information, the host computer controls the torque output of the drive motor to ensure that the drum device 12 reaches a preset torque. For example, if the calculated torque is 500 N·m, the host computer sends a command to the drive motor to output this torque. Based on the run time information, the host computer controls the drum device 12 to maintain a specific speed and torque for a preset time. For example, if the run time is 60 minutes, the host computer ensures that the drum device 12 continues to operate for this time, simulating the actual driving time of the vehicle.

[0121] By precisely controlling and monitoring the operation of each component, the test method can provide highly accurate test data, ensuring the accuracy and reliability of the test results.

[0122] According to the above embodiment, specifically, obtaining the steering angle based on the real-time distance data between the two laser ranging points of the laser rangefinder 13 and the angle disc 14 and adjusting the drum device 12 according to the steering angle includes:

[0123] Receive real-time distance data between the two laser ranging points of the laser rangefinder 13 and the angle disc 14;

[0124] Determine the steering angle of the vehicle to be tested based on real-time distance data;

[0125] The differential speed of the drum device 12 is determined according to the steering angle, and the rotation speed information of the drum device 12 is adjusted according to the differential speed.

[0126] The laser rangefinder 13 measures the distance between the two laser rangefinder points and the angle disc 14 in real time and transmits this data to the host computer. After receiving the real-time distance data from the laser rangefinder 13, the host computer determines the steering angle of the vehicle through geometric calculations.

[0127] Since the specific differential speed of the two wheels needs to be determined according to the ratio of their steering circumferences, the steering circumference ratio of the two wheels can be determined according to the steering angle.

[0128] For example, the outer front wheel track radius (R) is typically used as the standard turning radius. It is determined by vehicle length L and the maximum front wheel steering angle θ, approximately expressed as: R = L / sin θ. The wheelbase (W) is the distance between the left and right wheel centers, which affects the difference in inner and outer wheel tracks.

[0129] Inner front wheel radius R in :R in =R-(W / 2);

[0130] Outer front wheel radius R out :R out =R+(W / 2);

[0131] Taking a right-angle turn as an example, the vehicle's travel path is a 90° arc (i.e., 1 / 4 of the circumference). The formula for the left and right wheel steering circumference is:

[0132] Inner front wheel circumference C in :C in =(2πR in )×1 / 4=πR in / 2;

[0133] Outer front wheel circumference C out :C out =(2πR out )×1 / 4=πR out / 2;

[0134] Assume R=5 meters, W=1.5 meters:

[0135] R in =5-0.75=4.25 meters, C in ≈3.14×4.25 / 2≈6.67 meters;

[0136] R out =5+0.75=5.75 meters, C out ≈3.14×5.75 / 2≈9.03 meters;

[0137] Based on the aforementioned proportional relationship between the steering circumferences of the left and right wheels, the current distribution ratio during the steering process can be simulated. By adjusting different torque parameters for the two drum devices on the test bench, the steering differential function of the actual vehicle during steering can be simulated.

[0138] According to the above embodiment, specifically, controlling the operation of the vehicle to be tested according to the preset working conditions includes:

[0139] Controlling the accelerator pedal of the vehicle under test to make the vehicle under test move according to the preset working conditions;

[0140] Controlling a shift switch of the vehicle to be tested to shift gears of the vehicle to be tested;

[0141] Control the hydraulic solenoid proportional valve of the vehicle to be tested to lift and lower the load-bearing plate of the vehicle to be tested;

[0142] Control the steering valve of the vehicle under test to steer the vehicle under test.

[0143] Based on the preset operating conditions, the host computer uses control signals to adjust the vehicle's accelerator pedal, ensuring it travels at the preset speed. Precisely controlling the accelerator pedal simulates the vehicle's energy consumption and power performance at varying speeds. For example, when testing a vehicle's acceleration, the accelerator pedal's opening can be gradually increased to simulate a vehicle accelerating from a standstill to high speed.

[0144] Based on preset operating conditions, the host computer uses control signals to adjust the vehicle's shift switches, enabling automatic shifting under varying speed and load conditions. This simulates actual vehicle shifting and assesses shift smoothness and power delivery efficiency. For example, when testing a vehicle's climbing performance, it can automatically shift to a lower gear to provide greater torque.

[0145] Based on preset operating conditions, the host computer uses control signals to adjust the vehicle's hydraulic solenoid proportional valve, raising or lowering the vehicle's load-bearing plate. This simulates vehicle operation under varying load conditions and assesses the vehicle's load-bearing capacity and operational stability. For example, when testing a vehicle's lifting performance, the hydraulic solenoid proportional valve opening can be gradually increased to simulate the lifting of the vehicle's load-bearing plate.

[0146] Based on preset operating conditions, the host computer uses control signals to adjust the steering valve of the vehicle under test, causing it to steer at the preset angle. This simulates vehicle operation at different steering angles and evaluates its steering flexibility and stability. For example, when testing a vehicle's steering performance, the steering valve opening can be gradually increased to simulate the vehicle's steering process.

[0147] By precisely controlling the accelerator pedal, shift switch, hydraulic solenoid proportional valve, and steering valve of the vehicle under test, the test method can provide highly accurate test data, ensuring the accuracy and reliability of the test results.

[0148] The above is a detailed introduction to the industrial vehicle energy consumption and thermal balance integrated test system and test method provided by the present application. The various embodiments in the specification are described in a progressive manner, and each embodiment focuses on the differences from other embodiments. The same and similar parts between the various embodiments can be referred to each other. For the device disclosed in the embodiment, since it corresponds to the method disclosed in the embodiment, the description is relatively simple, and the relevant parts can be referred to the method part description. It should be pointed out that for ordinary technicians in this technical field, without departing from the principles of this application, several improvements and modifications can be made to the present application, and these improvements and modifications also fall within the scope of protection of the claims of this application.

[0149] It should also be noted that, in this specification, relational terms such as first and second, etc., are used only to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "comprises," "comprising," or any other variants thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus comprising a series of elements includes not only those elements, but also other elements not explicitly listed, or elements inherent to such process, method, article, or apparatus. In the absence of further limitations, an element defined by the phrase "comprising a ..." does not exclude the presence of additional identical elements in the process, method, article, or apparatus comprising the element.

Claims

1. An integrated test system for energy consumption and thermal balance of industrial vehicles, characterized in that: include: A host computer, an environmental chamber, a test platform arranged in the environmental chamber, a rotating drum device, a laser rangefinder including two laser ranging points, an angle plate, an environmental simulation system, and a temperature data acquisition system arranged on the vehicle to be tested; The test platform is used to park the vehicle to be tested; the environmental simulation system is used to simulate preset environmental conditions; the temperature data acquisition system is used to collect temperature information of the vehicle to be tested; The drum device is arranged at the front end of the test platform, and the driving wheel of the vehicle to be tested is placed above it. The drum device is used to simulate the running road conditions; The angle disc is arranged on the steering wheel hub of the vehicle to be tested, and the laser rangefinder is arranged on the test platform, for collecting real-time distance data of two laser ranging points from the angle disc and obtaining the steering angle; The host computer is connected to the drum device, laser rangefinder, environmental simulation system, temperature data acquisition system, and the vehicle to be tested, and is used to control the operation of the drum device and the environmental simulation system according to preset road spectrum information, adjust the drum device according to the steering angle, control the operation of the vehicle to be tested according to preset working conditions, and obtain test data and temperature information of the vehicle to be tested.

2. The industrial vehicle energy consumption and heat balance integrated test system according to claim 1, characterized in that: The environmental simulation system includes: a wind tunnel and constant temperature and humidity equipment; The air outlet of the wind tunnel faces the vehicle to be tested, and is used to simulate the air flow environment under different wind speed conditions; The constant temperature and humidity equipment is arranged in the environmental chamber and is used to adjust the temperature and humidity in the environmental chamber.

3. The industrial vehicle energy consumption and heat balance integrated test system according to claim 1, characterized in that: There are two laser rangefinders; the laser rangefinder includes: a mobile track and a mobile rangefinder; The two movable tracks are respectively arranged on two sides of the test platform and are parallel to the body direction of the vehicle to be tested; The mobile distance meter is arranged on the mobile track, moves along the mobile track, and includes two laser distance measuring points.

4. The industrial vehicle energy consumption and heat balance integrated test system according to claim 1, characterized in that: The test platform is also provided with: a force sensor; the force sensor is connected to the host computer; The force sensor is located below the wheel of the vehicle to be tested, and is used to collect the gravity value of the vehicle to be tested on the test platform and send it to the host computer.

5. The industrial vehicle energy consumption and heat balance integrated test system according to claim 1, characterized in that: Also includes: Anti-tipping device; The anti-dumping device is fixed on the test platform, and the vehicle to be tested is fixed on the test platform through the anti-dumping device.

6. The industrial vehicle energy consumption and heat balance integrated test system according to any one of claims 1 to 5, characterized in that: The drum device includes: a first roller pair, a second roller pair, a first drive motor, a second drive motor, a speed sensor, and a torque sensor; the first roller pair and the second roller pair both include a front roller and a rear roller; The first roller pair is connected to the first drive motor, and the second roller pair is connected to the second drive motor; the first drive motor, the second drive motor, the speed sensor, and the torque sensor are connected to the host computer. The speed sensor and the torque sensor are respectively installed on the first roller pair and the second roller pair, and are used to monitor the speed information and torque information of the roller pair in real time, and transmit the speed information and torque information to the host computer.

7. An integrated test method for energy consumption and thermal balance of industrial vehicles, characterized in that: The invention is applied to an integrated test system for energy consumption and thermal balance of industrial vehicles, and comprises: a host computer, an environmental chamber, a test platform arranged in the environmental chamber, a rotating drum device, a laser rangefinder including two laser ranging points, an angle plate, an environmental simulation system, and a temperature data acquisition system arranged on the vehicle to be tested; the test platform is used to park the vehicle to be tested; the rotating drum device is arranged at the front end of the test platform, the driving wheel of the vehicle to be tested is placed above it, the angle plate is arranged on the steering wheel hub of the vehicle to be tested, the laser rangefinder is arranged on the side of the vehicle to be tested, and the environmental simulation system is used to simulate preset environmental conditions; the temperature data acquisition system is used to collect temperature information inside the vehicle to be tested; the host computer is connected to the rotating drum device, the laser rangefinder, the environmental simulation system, the temperature data acquisition system, and the vehicle to be tested; The method comprises: Receive preset road spectrum information and preset working conditions; Controlling the drum device to simulate operating road conditions according to the preset road spectrum information; Obtaining a steering angle based on real-time distance data between the two laser distance measuring points of the laser rangefinder and the angle disc and adjusting the drum device based on the steering angle; Controlling the operation of the vehicle to be tested according to a preset working condition, and collecting test data of the vehicle to be tested under a cycle test as energy consumption test data; The environment simulation system is controlled to run and the vehicle to be tested is controlled to run according to a preset working condition, and the temperature data of the temperature data acquisition system is collected as thermal balance test data.

8. The integrated testing method for energy consumption and heat balance of industrial vehicles according to claim 7, characterized in that: Controlling the drum device to simulate operating road conditions according to the preset road spectrum information includes: Extracting vehicle speed information, load information, steering angle information, and running time information from the preset road spectrum information; determining the rotation speed information and torque information of the drum device according to the vehicle speed information, the load information, and the steering angle information; The rotating drum device is controlled according to the rotation speed information, the torque information, and the operating time information.

9. The integrated testing method for energy consumption and heat balance of industrial vehicles according to claim 8, characterized in that: Obtaining a steering angle according to real-time distance data of two laser distance measuring points of the laser rangefinder from the angle disc and adjusting the drum device according to the steering angle includes: receiving real-time distance data between the two laser ranging points of the laser rangefinder and the angle disc; Determining a steering angle of the vehicle to be tested according to the real-time distance data; The differential speed of the drum device is determined according to the steering angle, and the rotation speed information of the drum device is adjusted according to the differential speed.

10. The integrated testing method for energy consumption and heat balance of industrial vehicles according to claim 7, characterized in that: Controlling the operation of the vehicle to be tested according to the preset working conditions includes: Controlling the accelerator pedal of the vehicle to be tested to make the vehicle to be tested move according to a preset working condition; Controlling a shift switch of the vehicle to be tested to shift gears of the vehicle to be tested; Controlling the hydraulic solenoid proportional valve of the vehicle to be tested to lift and lower the load-bearing plate of the vehicle to be tested; The steering valve of the vehicle to be tested is controlled to steer the vehicle to be tested.

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