Reliability test method of special vehicle loading structure and special vehicle loading test bed control device

Abstract

The invention relates to the technical field of reliability testing, in particular to a reliability testing method for a special vehicle loading structure and a special vehicle loading test bed control device. The method comprises the following steps: receiving a test task; the test tasks comprise loading types, test times and test duration; installing a loading structure of the special vehicle in the test area, judging whether the type of the loading structure is matched with the loading type or not, and judging whether the number of tested times of the loading structure is smaller than the number of test times or not; when the type of the loading structure is matched with the loading type and the number of tested times is smaller than the number of tested times, controlling a driving assembly to drive the loading structure to move for a test duration, and obtaining test data of the loading structure; and judging whether the loading structure is reliable or not based on test data of multiple tests. By adopting the method, the reliability test of various top-mounted structures can be realized by using the same top-mounted test bed control device.

Description

Technical Field

[0001] This application relates to the field of reliability testing technology, and in particular to a reliability testing method for a special vehicle superstructure and a control device for a special vehicle superstructure test bench. Background Technology

[0002] With the development of the special-purpose vehicle industry, the reliability of special-purpose vehicle superstructures has received increasing attention. However, traditional testing of special-purpose vehicle superstructures mainly relies on manual operation and simple instrument measurements, which is inefficient and has poor data accuracy. Existing test benches have limited functionality and cannot meet the testing needs of different special-purpose vehicle superstructures. Insufficient safety protection measures during the testing process affect the safety of experimental personnel. For example, patent CN220962226U replicates the electrical system of a sweeper truck on a test bench, which is costly and only targets sweeper truck superstructure testing, failing to provide reliability testing for multiple types of superstructure structures. Summary of the Invention

[0003] Therefore, it is necessary to provide a reliability testing method for special vehicle superstructures and a control device for a special vehicle superstructure test bench that can test various superstructure structures, in order to address the above-mentioned technical problems.

[0004] A reliability testing method for a special vehicle superstructure is applied to a superstructure test bench control device, the superstructure test bench control device including a drive assembly and a test area, the method comprising: S1. Receive test task; the test task includes the type of upper device, the number of tests, and the test duration; Preferably, the superstructure type refers to the type of superstructure structure for which reliability testing is expected; S2. Install the superstructure of the special vehicle in the test area, and determine whether the type of the superstructure matches the type of the superstructure, and determine whether the number of tests of the superstructure is less than the number of tests. Preferably, the superstructure refers to the structure actually installed in the test area; S3. When the type of the upper structure matches the type of the upper structure and the number of tests is less than the number of tests, control the drive component to drive the upper structure to move for the test duration, and acquire the test data of the upper structure; S4. Based on the test data from multiple tests, determine whether the upper structure is reliable.

[0005] In one embodiment, the upper test bench control device further includes multiple proximity sensors, and the process of determining the type of the upper structure in step S2 includes: When installing the superstructure of the special vehicle in the test area, the sensing values ​​of multiple proximity sensors are obtained; The dimensions of the superstructure are determined based on multiple sensor values. Based on the dimensions of the superstructure, the type of the superstructure is determined.

[0006] Preferably, multiple proximity sensors are arranged in fixed positions in the upper test bench control device according to a preset geometric relationship.

[0007] In one embodiment, step S3 includes: When the type of the upper structure matches the type of the upper structure, the number of tests is less than the number of tests, and the test area is unobstructed, the drive component is controlled to drive the upper structure to move for the test duration.

[0008] In one embodiment, the upper test bench control device further includes an emergency stop button, and the method further includes: If the test area is obstructed during the reliability test, the emergency stop button will be triggered to stop the reliability test of the superstructure.

[0009] Preferably, a safety light curtain is used to detect whether there is any obstruction in the test area.

[0010] Preferably, the display screen is connected to the controller. If the test area is obstructed during the reliability test, an alarm message indicating that the test area is obstructed is displayed on the display screen of the upper test bench control device.

[0011] In one embodiment, the upper test bench control device further includes a servo motor, the drive component is a hydraulic system, the test task further includes preset hydraulic system flow rate, and the method further includes: Collect the real-time flow rate in the hydraulic system; When the real-time flow rate is inconsistent with the preset hydraulic system flow rate, the rotational speed of the servo motor is adjusted according to the difference between the real-time flow rate and the preset hydraulic system flow rate to make the real-time flow rate consistent with the preset hydraulic system flow rate.

[0012] In one embodiment, the upper test bench control device includes a display screen for displaying the test data.

[0013] Preferably, the display screen shows one or more of the following: the test task, the duration of movement of the superstructure, and the number of tests.

[0014] In one embodiment, step S3 further includes: During the movement of the superstructure, the real-time status parameters of the drive component are acquired, and it is determined whether the real-time status parameters match the preset status parameters; the real-time status parameters include at least one of the flow rate of the drive component, the pressure of the drive component, and the temperature of the drive component; When the real-time status parameters match the preset status parameters, the reliability test for the superstructure is determined to be reliable.

[0015] Preferably, the real-time status parameters are displayed on the screen of the test bench control device.

[0016] In one embodiment, the method further includes: When the real-time status parameter exceeds a preset threshold, the reliability test of the superstructure is stopped and an alarm is triggered.

[0017] A special vehicle mounting test bench control device, the special vehicle mounting test bench control device includes an industrial control computer, a controller, a servo system, sensors and drive components; The industrial control computer is connected to the controller. The industrial control computer is used to receive test tasks and send the test tasks to the controller. The test task includes the type of upper device, the number of tests, and the test duration. The controller is connected to the servo system, the drive assembly, and the sensor. The controller is used to control the industrial computer to receive test tasks and, when installing the superstructure of the special vehicle, receive data collected by the sensor and determine whether the type of the superstructure matches the test type based on the data, and whether the number of tests of the superstructure is less than the number of tests. When the type of the superstructure matches the test type and the number of tests is less than the number of tests, the controller controls the drive assembly to drive the superstructure to move for the test duration and acquires the test data of the superstructure. Based on the test data from multiple tests, the controller determines whether the superstructure is reliable. The sensor includes a proximity sensor, which is used to detect the type of the superstructure and whether the superstructure has been installed.

[0018] The aforementioned reliability testing method for special vehicle superstructures and the control device for special vehicle superstructure test benches receive test tasks, install the superstructure of a special vehicle in the test area, and determine whether the type of superstructure matches the type of superstructure and whether the number of tests already conducted on the superstructure is less than the number of tests conducted. When the type of superstructure matches the type of superstructure and the number of tests already conducted is less than the number of tests conducted, the drive component is controlled to drive the superstructure to move for the test duration, and the test data of the superstructure is acquired. Based on the test data from multiple tests, the reliability of the superstructure is determined. In this way, by updating the superstructure type, number of tests, and test duration in the test task, the same superstructure test bench control device can be used to achieve reliability testing of multiple superstructures. Attached Figure Description

[0019] Figure 1 This is an application environment diagram of a reliability testing method for a special vehicle superstructure in one embodiment. Figure 2 This is a structural diagram of the hydraulic system in one embodiment; Figure 3 This is a flowchart illustrating a reliability testing method for a special vehicle superstructure in one embodiment; Figure 4 This is a structural diagram of a test bench control device mounted on a special vehicle in one embodiment; Figure 5 This is an electrical schematic diagram of the controller in one embodiment.

[0020] Reference numerals: 1. Oil tank; 2. Servo motor; 3. Gear pump; 4. Level gauge; 5. Air filter; 6. Level sensor; 7. Pressure gauge; 8. Check valve; 9. Solenoid relief valve; 10. Pressure sensor; 11. Temperature sensor; 12. Flow sensor; 13. Solenoid directional valve; 14. Oil cylinder; 15. Air-cooled radiator; 16. Return oil filter; 17. Suction oil filter; 18. Pressure gauge valve; 19. Controller; 20. Servo controller; 21. Display screen; 22. Safety system; 100. Upper structure; 200. Drive assembly. Detailed Implementation

[0021] To make the objectives, technical solutions, and advantages of this application clearer, the following detailed description is provided in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative and not intended to limit the scope of this application.

[0022] The reliability testing method for special vehicle superstructures provided in this application embodiment can be applied to, for example... Figure 1The illustrated upper structure test bench control device receives test tasks via an industrial control computer 18 and sends them to a controller 19. The test tasks include the upper structure type, the number of tests, and the test duration. The upper structure test bench control device installs the upper structure 100 of the special vehicle in the test area and, through the controller 19, determines whether the upper structure type matches the test type and whether the number of tests already conducted on the upper structure is less than the required test count. If the upper structure type matches the test type and the number of tests already conducted is less than the required test count, the controller 19 controls the drive assembly 200 to drive the upper structure for the test duration and acquires the test data of the upper structure 100. Based on the test data from multiple tests, the upper structure test bench control device determines whether the upper structure 100 is reliable.

[0023] In some embodiments, the sensor includes a pressure sensor, a temperature sensor, a flow sensor, and a proximity sensor, wherein the pressure sensor is used to measure the pressure of the drive component, the temperature sensor is used to measure the temperature of the drive component, and the flow sensor is used to measure the flow rate of the drive component.

[0024] In some embodiments, the drive component 200 is a hydraulic system, and the structural diagram of the hydraulic system is shown below. Figure 2 As shown, the hydraulic system includes an oil tank 1, a servo motor 2, a gear pump 3, a level gauge 4, an air filter 5, a level sensor 6, a pressure gauge 7, a check valve 8, a solenoid relief valve 9, a pressure sensor 10, a temperature sensor 11, a flow sensor 12, a solenoid directional valve 13, a cylinder 14, an air-cooled radiator 15, a return oil filter 16, a suction oil filter 17, and a pressure gauge valve 18. The servo motor 2 drives the gear pump 3 to rotate clockwise, converting mechanical energy into the kinetic energy of the hydraulic oil. The solenoid directional valve 13 controls the flow direction of the hydraulic oil, changing the direction of movement of the cylinder 14. The check valve 8 allows unidirectional flow of the hydraulic oil, preventing backflow. The solenoid relief valve 9 sets the relief pressure to prevent overpressure in the hydraulic system 200, protecting the oil pump and oil circuit system. The pressure gauge valve 18 connects to the pressure gauge 7, facilitating its removal or replacement. The pressure gauge 7 and the pressure sensor 10 are used to detect the working pressure of the hydraulic system 200. Level gauge 4 and level sensor 6 are used to detect the hydraulic level in tank 1. Temperature sensor 11 is used to detect the temperature of the hydraulic oil. Flow sensor 12 is used to collect the flow rate in the hydraulic lines and send the current signal to controller 19. Air filter 5 is used to prevent external particles from entering tank 1, ensuring that the pressure inside tank 1 is balanced with atmospheric pressure and preventing cavitation in the pump. Return filter 16 and suction filter 17 are used to keep the oil in tank 1 clean. Air-cooled radiator 15 is used to regulate the hydraulic oil temperature and cool the hydraulic lines.

[0025] In some embodiments, the upper body test bench control device further includes a safety system connected to the controller. The safety system includes a safety light curtain and an emergency stop button. The safety light curtain is used to detect whether there is an obstruction in the test area where the upper body structure is installed. The emergency stop button is used to stop the reliability test of the upper body structure and issue an alarm when there is an obstruction in the test area.

[0026] In some embodiments, the servo system includes a servo controller and a servo motor. The servo controller is connected to the servo motor, and the servo motor is connected to a gear pump of the drive assembly. The servo controller is used to control the servo motor to drive the gear pump to rotate clockwise.

[0027] In one embodiment, such as Figure 3 As shown, a reliability testing method for a special vehicle superstructure is provided, which is then applied to... Figure 1 Taking the upper test bench control device as an example, the explanation includes the following steps: S1. Receive test tasks; test tasks include upper-mount type, number of tests, and test duration; The test tasks are received by the industrial control computer (ICC) of the test bench control device. The ICC serves as the decision-making layer and task processing unit for the test bench control device. Test personnel can use the ICC to set test tasks, collect and output test data. The ICC can be used to receive various different test tasks.

[0028] The test tasks can be set by the test personnel in the industrial control computer through the human-machine interface component of the test bench control device.

[0029] After receiving a test task, the industrial control computer sends it to the controller, which then determines the type and number of tests based on the task. The controller is the control layer of the test bench control device, primarily used to receive test tasks from the industrial control computer and control various components to perform reliability testing.

[0030] The type of superstructure refers to the type of superstructure structure that is expected to undergo reliability testing on the superstructure test bench control device. Superstructure types include, but are not limited to, feeding mechanisms, compression mechanisms, and hydraulic tailplates. The number of tests is the number of times the superstructure structure undergoes reliability testing. The test duration is the duration for which the superstructure structure must operate during each reliability test.

[0031] In some embodiments, a test task includes a superstructure type. The superstructure type, number of tests, and test duration may be the same or different between different test tasks. For example, the number of tests for the feeding lifting device, unloading pusher, and rear door opening, closing, and locking device of a food waste truck is 1000; the number of tests for the compression mechanism of a compactor garbage truck is 12000, the number of tests for the feeding mechanism is 12000, the number of tests for the unloading mechanism is 1000, and the number of tests for the locking mechanism is 1000; the number of tests for the hydraulic tailgate superstructure is 1000.

[0032] S2. Install the superstructure of the special vehicle in the test area and determine whether the type of the superstructure matches the type of the superstructure, and determine whether the number of tests of the superstructure is less than the number of tests. Special-purpose vehicles refer to vehicles that perform specific transportation or operational tasks under harsh working conditions. These vehicles operate in harsh environments and require high reliability of their superstructures. Examples include construction vehicles, sanitation vehicles, special transport vehicles, heavy-duty mining vehicles, kitchen waste trucks, and compressed garbage trucks.

[0033] The superstructure refers to the structure actually installed during the test. The type of superstructure may or may not be the same as the type of superstructure in the test task. Furthermore, if the type of superstructure is inconsistent with the type of superstructure in the test task, the currently installed superstructure needs to be replaced.

[0034] The number of tests completed refers to the number of reliability tests that the superstructure has undergone.

[0035] S3. When the type of the upper structure matches the type of the upper structure and the number of tests is less than the number of tests, control the drive component to drive the upper structure to move for the test duration and obtain the test data of the upper structure. The controller of the upper structure test bench control device controls the movement of the solenoid directional valve to cause the drive assembly to output driving force, thereby driving the upper structure to move. The drive assembly includes components capable of providing driving force. For example, the drive assembly includes a hydraulic system, a motor, and a cylinder. When the drive assembly is a hydraulic system, the controller controls the movement of the solenoid directional valve to cause the piston rod of the hydraulic cylinder in the hydraulic system to continuously extend and retract, thereby driving the upper structure to move. The extension of the piston rod refers to the piston rod moving outward from the hydraulic cylinder, and the retraction refers to the piston rod moving inward from the outside towards the hydraulic cylinder.

[0036] Matching the type of the superstructure with the type of superstructure means that the type of superstructure to be tested for reliability is consistent with the type of the superstructure actually installed.

[0037] By controlling the duration of the test to drive the upper structure's movement using the drive components, the simulated working conditions can be made more consistent with the actual working conditions, thus obtaining accurate reliability test results.

[0038] S4. Based on the test data from multiple tests, determine whether the upper structure is reliable.

[0039] The test data includes, but is not limited to, crack parameters, displacement, deformation, vibration frequency, and fault type of the superstructure. Furthermore, a large number of cracks indicates an unreliable superstructure; a large displacement indicates an unreliable superstructure; a large deformation indicates an unreliable superstructure; and when the vibration frequency matches that of the drive assembly or the superstructure test bench control device, the superstructure is at risk of resonance and has low reliability.

[0040] The aforementioned reliability testing method for special vehicle superstructure involves receiving a test task, installing the superstructure of the special vehicle in the test area, determining whether the type of superstructure matches the test type, and determining whether the number of tests already conducted on the superstructure is less than the number of tests conducted. When the type of superstructure matches the test type and the number of tests already conducted is less than the number of tests conducted, the drive component is controlled to drive the superstructure to move for the test duration, and the test data of the superstructure is acquired. Based on the test data from multiple tests, the reliability of the superstructure is determined. In this way, by updating the superstructure type, number of tests, and test duration in the test task, the reliability testing of multiple superstructures can be achieved using the same superstructure test bench control device.

[0041] In one embodiment, the upper test bench control device further includes multiple proximity sensors, and the process of determining the type of the upper structure in step S2 includes: When installing the superstructure of the special vehicle in the test area, the sensing values ​​of multiple proximity sensors are obtained; The dimensions of the superstructure are determined based on multiple sensor values; The type of superstructure is determined based on its dimensions.

[0042] Among them, proximity sensors are sensors that can detect the presence, position, or distance of an object without physical contact. Multiple proximity sensors are arranged in fixed positions on the upper test bench according to known geometric relationships. Proximity sensors include, but are not limited to, inductive sensors, capacitive sensors, and photoelectric sensors.

[0043] The sensing value of a proximity sensor refers to the electrical signal or digital quantity output by the sensor during operation, reflecting its detection state or changes in the physical environment. For example, if the proximity sensor detects no object approaching, the sensing value is 0; if it detects an object entering the detection range, the sensing value is 1. As another example, the sensing value is 1V when the object is 20mm away from the sensor, 5V when the object is 10mm away, and 10V when the object is 0mm away.

[0044] The specific process for determining the dimensions of the superstructure based on multiple sensor values ​​is as follows: Obtain the first distance value d1 between the first proximity sensor and the first surface of the superstructure, and the second distance value d2 between the second proximity sensor and the second surface of the superstructure; obtain the preset installation spacing between the first proximity sensor and the second proximity sensor. L The actual dimensions of the superstructure are calculated using the formula D = L − d1 − d2. When D is the length of the superstructure, the first proximity sensor faces the left end face of the superstructure, and the second proximity sensor faces the right end face of the superstructure. The left end face is the first surface, and the right end face is the second surface. When D is the width of the superstructure, the first proximity sensor faces the front end face of the superstructure, and the second proximity sensor faces the rear end face of the superstructure. The front end face is the first surface, and the rear end face is the second surface. When D is the height of the superstructure, the first proximity sensor faces the upper end face of the superstructure, and the second proximity sensor faces the lower end face of the superstructure. The upper end face is the first surface, and the lower end face is the second surface.

[0045] The dimensions of each type of superstructure are basically different. Therefore, once the dimensions of the superstructure are determined, the type of superstructure can be determined directly based on the dimensions.

[0046] In some embodiments, step S2 further includes determining whether the superstructure is installed in a preset position. Whether the superstructure is installed in the preset position can be determined by the sensing value of the proximity sensor. Specifically, the sensing value corresponding to the target type that matches the superstructure type is determined from a preset sensing value type mapping table. When the sensing value of the proximity sensor matches the sensing value corresponding to the target type, it is determined that the superstructure is installed in the preset position. The sensing value type mapping table includes various superstructure types and the associated sensing values ​​of proximity sensors. For example, if the type of the superstructure is type A, the sensing value of proximity sensor 1 associated with type A in the sensing value type mapping table is sensing value 1, the sensing value of proximity sensor 2 associated with type A is sensing value 2, and the sensing value of proximity sensor 3 associated with type A is sensing value 3. In the actual installation process, if the sensing value of proximity sensor 1 is sensing value 1, the sensing value of proximity sensor 2 is sensing value 2, and the sensing value of proximity sensor 3 is sensing value 3, then it can be determined that the superstructure is installed in the preset position. If any of the following conditions is not met, then the superstructure is not installed in the preset position.

[0047] In this embodiment, when installing the superstructure of the special vehicle in the test area, the sensing values ​​of multiple proximity sensors are obtained. Based on the multiple sensing values, the size of the superstructure is determined, and based on the size of the superstructure, the type of the superstructure is determined. This ensures that the type of the superstructure actually being tested for reliability is consistent with the type of the superstructure expected to be tested for reliability during reliability testing.

[0048] In one embodiment, step S3 includes: When the type of the upper structure matches the type of the upper structure, the number of tests is less than the number of tests, and the test area is unobstructed, control the driving component to drive the upper structure to move for the test duration.

[0049] In this context, "unobstructed test area" means that there are no obstacles in the test area other than the superstructure. For example, an unobstructed test area can only be determined if no one is present; if someone is present, obstruction is confirmed. The presence of obstruction in the test area can be detected using a safety light curtain. Specifically, the transmitter and receiver of the safety light curtain are installed on opposite sides of the test area. The transmitter emits infrared light sequentially or synchronously to the receiver, which judges in real time whether each beam of infrared light is received correctly. If all beams are unobstructed, the test area is considered unobstructed; if one or more beams of infrared light are obstructed, obstruction is confirmed. The area traversed by the infrared light does not overlap with the area where the superstructure is located.

[0050] In this embodiment, by controlling the duration of the test when the type of the upper structure matches the type of the upper structure, the number of tests is less than the number of tests, and the test area is unobstructed, the reliability test of the upper structure can be ensured to be carried out under safe conditions.

[0051] In some embodiments, when the type of the upper structure is the same as the type of the upper body, the number of tests of the upper structure is less than the number of tests, the upper structure is installed in a preset position, and the test area is unobstructed, the driving component is controlled to drive the upper structure to move for a test duration.

[0052] In one embodiment, the upper test bench control device further includes an emergency stop button, and the method further includes: If the test area is obstructed during the reliability test, the emergency stop button will be triggered to stop the reliability test of the superstructure.

[0053] The emergency stop button can be triggered by either the test personnel or the controller. For example, during reliability testing of the superstructure, if the operator observes an obstruction in the test area, they can press the emergency stop button to stop the reliability test and prevent a safety accident. Alternatively, a safety light curtain can be used to detect obstructions in the test area in real time during the reliability test of the superstructure. If an obstruction is detected, the controller automatically triggers the emergency stop button to stop the reliability test, and the servo motors of the superstructure test bench control device also stop running.

[0054] In one embodiment, if the test area is obstructed during the reliability test, an alarm message indicating that the test area is obstructed is displayed on the screen of the upper test bench control device.

[0055] In this embodiment, when it is determined that there is an obstruction in the test area during the reliability test, the emergency stop button is triggered to stop the reliability test of the upper structure. This ensures that the reliability test of the upper structure is carried out under safe conditions.

[0056] In one embodiment, the upper test bench control device further includes a servo motor, the drive component is a hydraulic system, the test task further includes preset hydraulic system flow rate, and the method further includes: Collect real-time flow data from the hydraulic system; When the real-time flow rate is inconsistent with the preset hydraulic system flow rate, the speed of the servo motor is adjusted according to the difference between the real-time flow rate and the preset hydraulic system flow rate to make the real-time flow rate consistent with the preset hydraulic system flow rate.

[0057] The real-time flow rate can be collected by a flow sensor. If the real-time flow rate is inconsistent with the preset hydraulic system flow rate, it indicates that the simulated working conditions of the superstructure may not match the actual working conditions. Therefore, it is necessary to adjust the motor speed to make the real-time flow rate consistent with the preset hydraulic system flow rate, so that the simulated working conditions of the superstructure match the actual working conditions.

[0058] Furthermore, after confirming that the reliability test preparation is complete, the controller sends a start signal to the servo controller, which then controls the servo motor to start running. The servo motor drives the gear pump through a coupling. The flow sensor collects the pipeline flow signal and sends it to the controller, forming a closed-loop control system. When the real-time flow rate is inconsistent with the preset hydraulic system flow rate, the motor speed is adjusted according to the difference between the real-time flow rate and the preset hydraulic system flow rate to make the real-time flow rate consistent with the preset hydraulic system flow rate, thus ensuring the stability of the hydraulic system flow rate.

[0059] In this embodiment, when the real-time flow rate is inconsistent with the preset hydraulic system flow rate, the speed of the servo motor is adjusted according to the difference between the real-time flow rate and the preset hydraulic system flow rate to make the real-time flow rate consistent with the preset hydraulic system flow rate. This ensures that the working conditions of the simulated superstructure structure match the actual working conditions.

[0060] In one embodiment, the upper test bench control device includes a display screen for displaying test data.

[0061] In some embodiments, the display screen can also be used to display the test task, and can also be used to display the duration of movement of the superstructure and the number of tests completed.

[0062] In this embodiment, the test data is displayed on the screen, which allows test personnel to directly judge whether the superstructure is reliable by observing the test data.

[0063] In one embodiment, step S3 further includes: During the movement of the superstructure, the real-time status parameters of the drive components are acquired, and it is determined whether the real-time status parameters match the preset status parameters. The real-time status parameters include at least one of the following: the flow rate of the drive components, the pressure of the drive components, and the temperature of the drive components. When the real-time status parameters match the preset status parameters, the reliability test for the superstructure is determined to be reliable.

[0064] The preset status parameters include preset flow rate, preset pressure, and preset temperature. Matching the real-time status parameters with the preset status parameters means that the flow rate of the drive component matches the preset flow rate, the pressure of the drive component matches the preset pressure, and the temperature of the drive component matches the preset temperature. If one or more of the following conditions are met: the flow rate of the drive component does not match the preset flow rate, the pressure of the drive component does not match the preset pressure, or the temperature of the drive component does not match the preset temperature, then the real-time status parameters are determined to be mismatched with the preset status parameters.

[0065] In some embodiments, the real-time status parameters can be a first curve formed by the status parameters at various time points throughout the entire reliability test. The preset status parameters are a second curve formed by the preset status parameters corresponding to each time point. When determining whether the real-time status parameters match the preset status parameters, it is possible to determine whether the first curve matches the second curve. Specifically, it is determined whether the first curve corresponding to the flow rate of the drive component matches the second curve corresponding to the preset flow rate, whether the first curve corresponding to the pressure of the drive component matches the second curve corresponding to the preset pressure, and whether the first curve corresponding to the temperature of the drive component matches the second curve corresponding to the preset temperature. If any one of them does not match, the reliability test for the upper structure is determined to be unreliable; if all curves match, the reliability test for the upper structure is determined to be reliable.

[0066] In some embodiments, the upper test bench control device includes a display screen, which is used to display real-time status parameters and preset status parameters.

[0067] In this embodiment, by acquiring the real-time status parameters of the hydraulic system during the movement of the superstructure, and determining whether the real-time status parameters match the preset status parameters, it is possible to determine whether the reliability test process is reliable, and thus whether the acquired test data is reliable.

[0068] In one embodiment, the method further includes: When the real-time status parameters exceed the preset threshold, the reliability test of the superstructure is stopped and an alarm is triggered.

[0069] The preset thresholds include preset flow rate threshold, preset pressure threshold, and preset temperature threshold. Specifically, when the flow rate of the drive component exceeds the preset flow rate threshold, or the pressure of the drive component exceeds the preset pressure threshold, or the temperature of the drive component exceeds the preset temperature threshold, the reliability test of the upper structure is stopped and an alarm is triggered.

[0070] If the real-time status parameters exceed the preset threshold, it indicates that the operating status of the drive component has deviated from the normal operating range, and there is a potential fault, safety hazard or risk of equipment damage.

[0071] In some embodiments, when the real-time status parameters exceed a preset threshold, the reliability test of the superstructure is stopped, and an alarm message is displayed on the screen to inform the staff that the real-time status parameters have exceeded the preset threshold.

[0072] In this embodiment, by stopping the reliability test of the superstructure and issuing an alarm when the real-time status parameters exceed a preset threshold, the reliability test of the superstructure can be stopped in time when the operating status of the drive component deviates from the normal operating range, thus avoiding damage to the hydraulic system. At the same time, it can also alert the test personnel to potential faults or safety hazards in the drive component.

[0073] It should be understood that although the steps in the flowcharts of the above embodiments are shown sequentially according to the arrows, these steps are not necessarily executed in the order indicated by the arrows. Unless explicitly stated herein, there is no strict order restriction on the execution of these steps, and they can be executed in other orders. Moreover, at least some steps in the flowcharts of the above embodiments may include multiple steps or multiple stages. These steps or stages are not necessarily completed at the same time, but can be executed at different times. The execution order of these steps or stages is not necessarily sequential, but can be performed alternately or in turn with other steps or at least some of the steps or stages of other steps.

[0074] A special vehicle is equipped with a test bench control device, such as Figure 4 As shown, the test bench control device mounted on the special vehicle includes an industrial computer, controller, servo system, sensors, and drive components; The industrial computer is connected to the controller. The industrial computer is used to receive test tasks and send them to the controller. The test tasks include the type of upper device, the number of tests, and the test duration. The controller is connected to the servo system, drive components, and sensors. The controller is used to control the industrial control computer to receive test tasks and, during the installation of the superstructure of the special vehicle, receive data collected by the sensors and determine whether the type of the superstructure matches the test type and whether the number of tests on the superstructure is less than the test number. When the type of the superstructure matches the test type and the number of tests is less than the test number, the controller controls the drive components to drive the superstructure to move for the test duration and acquires the test data of the superstructure. Based on the test data from multiple tests, the controller determines whether the superstructure is reliable. The sensors include proximity sensors, which are used to detect the type of the superstructure and whether the superstructure is installed correctly. The electrical schematic of the controller is shown below. Figure 5 As shown, Figure 5 In this context, a dedicated controller is simply called a controller.

[0075] In one embodiment, a computer device is also provided, including a memory and a processor, wherein the memory stores a computer program, and the processor executes the computer program to implement the steps in the above method embodiments.

[0076] In one embodiment, a computer-readable storage medium is provided having a computer program stored thereon that, when executed by a processor, implements the steps in the above method embodiments.

[0077] In one embodiment, a computer program product is provided, including a computer program that, when executed by a processor, implements the steps in the above method embodiments.

[0078] Those skilled in the art will understand that all or part of the processes in the above embodiments can be implemented by a computer program instructing related hardware. The computer program can be stored in a non-volatile computer-readable storage medium. When executed, the computer program can include the processes of the embodiments described above. Any references to memory, databases, or other media used in the embodiments provided in this application can include at least one of non-volatile and volatile memory. Non-volatile memory can include read-only memory (ROM), magnetic tape, floppy disk, flash memory, optical memory, high-density embedded non-volatile memory, resistive random access memory (ReRAM), magnetic random access memory (MRAM), ferroelectric random access memory (FRAM), phase change memory (PCM), graphene memory, etc. Volatile memory can include random access memory (RAM) or external cache memory, etc. By way of illustration and not limitation, RAM can take many forms, such as Static Random Access Memory (SRAM) or Dynamic Random Access Memory (DRAM). The databases involved in the embodiments provided in this application may include at least one type of relational database and non-relational database. Non-relational databases may include, but are not limited to, blockchain-based distributed databases. The processors involved in the embodiments provided in this application may be general-purpose processors, central processing units, graphics processing units, digital signal processors, programmable logic devices, quantum computing-based data processing logic devices, etc., and are not limited to these.

[0079] The technical features of the above embodiments can be combined in any way. For the sake of brevity, 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.

[0080] The embodiments described above are merely illustrative of several implementation methods of this application, and while the descriptions are specific and detailed, they should not be construed as limiting the scope of this patent application. It should be noted that those skilled in the art can make various modifications and improvements without departing from the concept of this application, and these all fall within the protection scope of this application. Therefore, the protection scope of this application should be determined by the appended claims.

Claims

1. A reliability testing method for a special vehicle superstructure, applied to a superstructure test bench control device, characterized in that, The upper test bench control device includes a drive assembly and a test area, and the method includes: S1. Receive test task; the test task includes the type of upper device, the number of tests, and the test duration; S2. Install the superstructure of the special vehicle in the test area, and determine whether the type of the superstructure matches the type of the superstructure, and determine whether the number of tests of the superstructure is less than the number of tests. S3. When the type of the upper structure matches the type of the upper structure and the number of tests is less than the number of tests, control the drive component to drive the upper structure to move for the test duration, and acquire the test data of the upper structure; S4. Based on the test data from multiple tests, determine whether the upper structure is reliable.

2. The method according to claim 1, characterized in that, The upper test bench control device also includes multiple proximity sensors. The process of determining the type of the upper structure in step S2 includes: When installing the superstructure of the special vehicle in the test area, the sensing values ​​of multiple proximity sensors are obtained; The dimensions of the superstructure are determined based on multiple sensor values. Based on the dimensions of the superstructure, the type of the superstructure is determined.

3. The method according to claim 1, characterized in that, Step S3 includes: When the type of the upper structure matches the type of the upper structure, the number of tests is less than the number of tests, and the test area is unobstructed, the drive component is controlled to drive the upper structure to move for the test duration.

4. The method according to claim 1, characterized in that, The upper test bench control device also includes an emergency stop button, and the method further includes: If the test area is obstructed during the reliability test, the emergency stop button will be triggered to stop the reliability test of the superstructure.

5. The method according to claim 1, characterized in that, The upper test bench control device also includes a servo motor, the drive component is a hydraulic system, the test task also includes preset hydraulic system flow rate, and the method further includes: Collect the real-time flow rate in the hydraulic system; When the real-time flow rate is inconsistent with the preset hydraulic system flow rate, the rotational speed of the servo motor is adjusted according to the difference between the real-time flow rate and the preset hydraulic system flow rate to make the real-time flow rate consistent with the preset hydraulic system flow rate.

6. The method according to claim 1, characterized in that, The upper test bench control device includes a display screen, which is used to display the test data.

7. The method according to claim 1, characterized in that, Step S3 also includes: During the movement of the superstructure, the real-time status parameters of the drive component are acquired, and it is determined whether the real-time status parameters match the preset status parameters; the real-time status parameters include at least one of the flow rate of the drive component, the pressure of the drive component, and the temperature of the drive component; When the real-time status parameters match the preset status parameters, the reliability test for the superstructure is determined to be reliable.

8. The method according to claim 7, characterized in that, The method further includes: When the real-time status parameter exceeds a preset threshold, the reliability test of the superstructure is stopped and an alarm is triggered.

9. A control device for a test bench mounted on a special vehicle, characterized in that, The test bench control device mounted on the special vehicle includes an industrial computer, controller, servo system, sensors, and drive components; The industrial control computer is connected to the controller. The industrial control computer is used to receive test tasks and send the test tasks to the controller. The test task includes the type of upper device, the number of tests, and the test duration. The controller is connected to the servo system, the drive assembly, and the sensor. The controller is used to control the industrial computer to receive test tasks and, when installing the superstructure of the special vehicle, receive data collected by the sensor and determine whether the type of the superstructure matches the test type based on the data, and whether the number of tests of the superstructure is less than the number of tests. When the type of the superstructure matches the test type and the number of tests is less than the number of tests, the controller controls the drive assembly to drive the superstructure to move for the test duration and acquires the test data of the superstructure. Based on the test data from multiple tests, the controller determines whether the superstructure is reliable. The sensor includes a proximity sensor, which is used to detect the type of the superstructure and whether the superstructure has been installed.

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