CN-122016338-A - Mining vehicle heat balance testing device and method and mining vehicle

CN122016338ACN 122016338 ACN122016338 ACN 122016338ACN-122016338-A

Abstract

The invention discloses a mining vehicle heat balance testing device and method, and a mining vehicle, comprising a sensor assembly, a plurality of rotating speed sensors, an environmental temperature sensor, a control assembly and a data storage module, wherein the sensor assembly comprises a rotating speed sensor, a temperature sensor and an environmental temperature sensor, the rotating speed sensors are respectively and correspondingly arranged at wheel hubs of a mine car to be tested, the temperature sensors are correspondingly arranged on the surfaces of the wheel hubs of the mine car to be tested, the environmental temperature sensor is arranged at a ventilation position of a test area of a test stand, the control assembly comprises a main controller and a data storage module, the main controller is respectively in communication connection with the sensor assembly, an execution assembly, an early warning assembly and the data storage module, the data storage module is used for storing collected data and controlling logic parameters, the execution assembly comprises a fan, the fan is electrically connected with the main controller, and the early warning assembly comprises an alarm module, and the alarm module is electrically connected with the main controller. The invention plays a role in dynamic cooling by adjusting the wind speed of the fan in real time so as to realize that the test vehicle is in a thermal balance state.

Inventors

ZHANG XUEJIAN
CHU FUYANG
YU GUOQING
YAN MINGBING
WANG WEI
ZHOU XINLI
LV SHUAI

Assignees

徐州徐工矿业机械有限公司

Dates

Publication Date: 20260512
Application Date: 20260209

Claims (12)

1. A mining vehicle thermal balance testing device, comprising: The sensor assembly comprises a rotating speed sensor, a temperature sensor and an environmental temperature sensor, wherein the rotating speed sensors are respectively and correspondingly arranged at wheel hubs of the mine car to be tested and are used for collecting wheel rotating speed signals in real time; The control assembly comprises a main controller and a data storage module, wherein the main controller is respectively in communication connection with the sensor assembly, the execution assembly, the early warning assembly and the data storage module and is used for receiving the acquisition signal of the sensor assembly, executing logic operation and outputting a control instruction, and the data storage module is used for storing acquisition data and control logic parameters; the execution assembly comprises a fan, wherein the fan is electrically connected with the main controller and is used for adjusting the rotating speed according to the instruction of the main controller so as to realize air cooling of the mine car to be tested; the early warning assembly comprises an alarm module, wherein the alarm module is electrically connected with the main controller and is used for sending out an alarm signal when the parameter acquired by the sensor assembly exceeds a preset threshold value.
2. The mining vehicle thermal balance testing apparatus according to claim 1, wherein the temperature sensor is mounted on a surface of a brake drum or a transaxle housing of a wheel rim of the mining vehicle to be tested, and is disposed adjacent to a rotational speed sensor of the corresponding wheel rim.
3. The mining vehicle heat balance testing device according to claim 1, wherein the alarm module comprises an audible and visual alarm, and the audible and visual alarm gives out an audible and visual alarm when the wheel rim rotating speed acquired by the rotating speed sensor exceeds a preset rotating speed range or the wheel rim temperature acquired by the temperature sensor exceeds a preset temperature threshold.
4. A mining vehicle heat balance testing method, characterized in that the mining vehicle heat balance testing device based on any one of claims 1-3 comprises the following steps: S1, fixing a mine car to be tested on a test bed, starting a test program, controlling a rotation speed sensor and an environmental temperature sensor to start working by a main controller, collecting rotation speed signals of all wheel edges and initial temperature signals of a test environment at intervals of t1, calculating the actual speed of the mine car to be tested, and judging whether the actual speed is in a preset rotation speed range; s2, judging the season type of the test environment according to the initial temperature acquired by the environment temperature sensor by the main controller, and calling an initial rotating speed control logic of the fan in the corresponding season; S3, the main controller controls the fan to start, starts to operate according to an initial rotating speed formula corresponding to seasons, and controls the temperature sensors of all the wheel sides to acquire wheel side temperature signals at intervals t 2; s4, the main controller receives a wheel side rotating speed signal of the rotating speed sensor, a wheel side temperature signal of the temperature sensor and an environment real-time temperature signal in real time, continuously optimizes a fan rotating speed adjusting parameter by combining historical acquisition data stored in the data storage module, and dynamically adjusts the rotating speed of the fan so as to maintain the temperature of the mine car to be tested in a preset temperature range; And S5, in the test process, if the main controller detects that the wheel edge rotating speed acquired by the rotating speed sensor exceeds a preset rotating speed range or the wheel edge temperature acquired by the temperature sensor exceeds a preset temperature threshold, immediately controlling the alarm module to send an alarm signal, and adjusting the rotating speed of the fan or triggering a test suspension instruction according to the parameter exceeding degree.
5. The mining vehicle heat balance test method according to claim 4, wherein the value range of t1 in the step S1 is 1-5S, and the value range of t2 in the step S3 is 2-10S.
6. The mining vehicle heat balance test method according to claim 4, wherein the season type judgment criteria in the step S2 are that summer is judged when the initial environmental temperature is not less than 30 ℃, winter is judged when the initial environmental temperature is not more than 10 ℃, and normal temperature is judged when the initial environmental temperature is not more than 10 ℃ and less than 30 ℃.
7. The mining vehicle heat balance testing method according to claim 4, wherein the initial rotation speed formula in step S3 is specifically: The summer is V Wind power 1 =k 1 *V Vehicle with a vehicle body having a vehicle body support +V Variable(s) 1 , wherein k 1 is a summer rotating speed proportionality coefficient, V Vehicle with a vehicle body having a vehicle body support is the actual speed of the mine car to be detected calculated based on the signals acquired by the rotating speed sensor, and V Variable(s) 1 is a summer rotating speed regulating variable; The winter is V Wind power 2 =k 2 *V Vehicle with a vehicle body having a vehicle body support +V Variable(s) 2 , wherein k 2 is a winter rotation speed proportionality coefficient, V Variable(s) 2 is a winter rotation speed regulating variable, and the initial test period V Wind power 2 =0, when the rotation speed of the mine car to be tested reaches the maximum value and the temperature of the wheel edge collected by the temperature sensor reaches the lower limit value of a preset reference temperature, the fan is started and operates according to a formula; The normal temperature is V Wind power 3 =k 3 *V Vehicle with a vehicle body having a vehicle body support +V Variable(s) 3 , wherein k 3 is a normal temperature rotating speed proportionality coefficient, and V Variable(s) 3 is a normal temperature rotating speed regulating variable.
8. The mining vehicle heat balance testing method according to claim 4, wherein the continuously optimizing fan speed adjusting parameter in step S4 specifically comprises: The main controller continuously collects the wheel edge rotating speed of the inner rotation speed sensor, the wheel edge temperature of the temperature sensor and the environmental temperature data in different time periods, and when the wheel edge temperature exceeds the upper limit value of the preset temperature range, the V Variable(s) in the corresponding seasonal rotating speed formula is increased; And when the temperature of the wheel edge is lower than the lower limit value of the preset temperature range, reducing V Variable(s) in a corresponding seasonal rotation speed formula until the temperature of the mine car to be detected is stabilized in the preset temperature range.
9. The method for testing the heat balance of the mining vehicle according to claim 4, wherein the step S4 is further characterized in that when the cumulative amount of the test data reaches a preset threshold value, the main controller generates a general fan speed adjusting formula suitable for mining vehicles of different types based on collected data of a plurality of groups of speed sensors and temperature sensors, and the general fan speed adjusting formula is stored in the data storage module and is used for heat balance testing of the mining vehicles of the subsequent types.
10. The mining vehicle heat balance test method according to claim 4, wherein the fluctuation allowable value of the preset temperature range is 1-5 ℃, and the reference temperature range of the performance of the adaptive oil product, the sealing element and the equipment is 60-80 ℃.
11. The mining vehicle heat balance testing method according to claim 4, wherein the criterion of the parameter exceeding the standard in step S5 is: When the temperature of the wheel edge collected by the temperature sensor exceeds the upper limit value of the preset temperature range but does not exceed the 2-time fluctuation allowable value of the upper limit value, the rotating speed of the fan is only increased, and when the temperature of the wheel edge reaches or exceeds the 2-time fluctuation allowable value of the upper limit value of the preset temperature range or the rotating speed of the wheel edge collected by the rotating speed sensor exceeds the preset range plus or minus 10%, a test pause instruction is triggered.
12. A mining vehicle having the mining vehicle thermal balance testing apparatus of any one of claims 1-3 mounted thereon.

Description

Mining vehicle heat balance testing device and method and mining vehicle Technical Field The invention relates to a mining vehicle heat balance testing device and method and a mining vehicle, and belongs to the technical field of engineering machinery testing. Background Along with the continuous improvement of the technical upgrading of the engineering machinery industry and the requirements of mine operation on equipment reliability, the complete machine system matching test of the mining vehicle becomes a key link for guaranteeing the core competitiveness of the product. The mining operation environment has the characteristics of complex road conditions, large load fluctuation, long continuous operation time and the like, and strict requirements are put on the bearing capacity, stability and durability of a power transmission system (comprising a hydraulic system, a gear box, a drive axle and the like) of the mining vehicle. In order to detect potential fault hidden trouble in advance and reduce the fault rate of products in service, the industry generally carries out complete machine system matching verification on mining vehicles through multiple-station simulation tests so as to ensure that the safety, reliability and service life of the vehicles in actual operation reach standards. However, when the mining vehicle performs multi-condition system matching test on the test bed, the mining vehicle is influenced by the complexity of the test conditions (such as full-load climbing, high-speed running, frequent start and stop and the like), the vehicle power transmission system needs to continuously output large torque and bear high load, so that the heating value of the test system (including test equipment and the vehicle to be tested) is increased sharply, and if the test system is not cooled effectively, key components such as hydraulic oil, sealing elements, bearings and the like are in a high-temperature environment for a long time. In the prior art, an air cooling mode (namely a cooling fan with a fixed rotating speed or a graded rotating speed is started) is generally adopted in the industry to cool, but the method has the obvious defects that on one hand, the working condition is frequently switched to cause dynamic change of heating value in the test process, the fan with the fixed or graded rotating speed cannot adaptively adjust cooling power according to real-time heating value, when the heating value is increased suddenly, the problems of exceeding of hydraulic oil temperature, accelerated aging of a sealing ring, reduction of lubricating oil viscosity and the like are caused by insufficient cooling power, the accuracy of a test result is directly influenced, and even the damage of a vehicle or test equipment is caused, and on the other hand, when the heating value is smaller, the fan is continuously operated with high power, unnecessary losses such as electric energy waste, aggravated fan abrasion and the like are caused. Furthermore, the existing air cooling scheme lacks a linkage response mechanism to test environment (such as seasonal temperature difference) and real-time running parameters (such as wheel rotation speed and component temperature) of the vehicle, and cannot realize dynamic matching of cooling power through feedback information of the vehicle to be tested and test equipment, so that a test system is difficult to maintain a stable heat balance state. Therefore, how to dynamically adjust the rotation speed of the cooling fan based on real-time operation parameters (such as wheel rotation speed and component temperature) and environmental conditions of the mining vehicle, so that the test system can accurately maintain the thermal balance state adapting to the performance of the key component in the full test period, not only avoids the test risk and equipment loss caused by high temperature, but also avoids the resource waste caused by excessive cooling power, and becomes a key technical problem to be solved urgently in the field of matching test of the mining vehicle system. Disclosure of Invention Aiming at the problems in the prior art, the invention provides a mining vehicle heat balance testing device and method, and a mining vehicle, which have the effect of dynamically cooling by adjusting the wind speed of a fan in real time so as to realize that the testing vehicle is in a heat balance state, and avoid the adverse effects of reduction in oil life, aging of a sealing rubber cushion and the like caused by large heating value of a mine car to be tested due to untimely cooling in a long-time testing process. In order to achieve the above object, the present invention provides a mining vehicle heat balance testing device comprising: The sensor assembly comprises a rotating speed sensor, a temperature sensor and an environmental temperature sensor, wherein the rotating speed sensors are respectively and correspondingly arranged at wheel hubs of the mine car to be tested an