Testing device and testing method for tread cleaning control module

Abstract

The invention provides a testing device and a testing method for a tread cleaning control module, and relates to the technical field of rail transit. According to the testing device, the controller, the control valves and the pressure detection elements are arranged, the controller can conduct corresponding testing operation according to different testing instructions, the control valve sets and the pressure detection elements, frequent manual intervention is not needed, the testing efficiency is improved, the pressure detection elements can accurately detect gas pressure data of all pipelines, and the testing efficiency is improved. And the controller compares the obtained pressure data with a preset detection threshold value, so that whether the test is qualified or not can be accurately judged. Meanwhile, the testing device can carry out multiple tests such as air tightness test, first pressure reducing valve pressure test, inflation and exhaust time test, pressure switch test, block valve test and electromagnetic valve response time test on the tread cleaning control module, and compared with a traditional testing method, various performance parameters of the tread cleaning control module can be comprehensively covered; and potential fault hidden dangers can be found in time.

Description

Technical Field

[0001] The present application relates to the field of rail transportation technology, and in particular to a testing device and a testing method for a tread cleaning control module. Background Art

[0002] The tread cleaning device for EMUs plays a vital role in improving the adhesion between the wheel and rail, removing oil and impurities, and repairing minor damage to the wheel tread. The tread cleaning control module is the core control unit within the device. Currently, testing the tread cleaning control module relies on manual operation, requiring the manual switching of pipeline valves and the recording of pressure parameters. This results in low test efficiency and is prone to data distortion due to human error. Summary of the Invention

[0003] The present application provides a testing device and a testing method for a tread cleaning control module, which are used to solve the problems of low testing efficiency of existing tread cleaning control modules and data distortion caused by human error.

[0004] In a first aspect, the present application provides a test device for a tread cleaning control module, the tread cleaning control module comprising an air intake shutoff valve, a first pressure reducing valve, a solenoid valve, a test interface, a pressure switch, and an air outlet shutoff valve; the air intake shutoff valve is connected to an external air source via a first pipeline, the air outlet shutoff valve is connected to the external atmosphere via a second pipeline, and the test interface is connected to the external air source via a third pipeline;

[0005] The testing device comprises:

[0006] Controllers, valve groups and pressure detection components;

[0007] The valve group includes a plurality of control valves, each of which is in communication with the controller and is respectively provided on the first pipeline, the second pipeline, and the third pipeline, and is used to control the communication state of the first pipeline, the second pipeline, and the third pipeline;

[0008] The pressure detection assembly includes a plurality of pressure detection elements, which are respectively arranged on the first pipeline, the second pipeline and the third pipeline, and are used to detect gas pressure data on the first pipeline, the second pipeline and the third pipeline;

[0009] The controller is used to control the multiple control valves to selectively open or close according to the test instructions when receiving a test instruction to perform a target test; wherein the target test is any one of an air tightness test, a first pressure reducing valve pressure test, an inflation and exhaust time test, a pressure switch test, a shut-off valve test, and a solenoid valve response time test; the controller is also used to obtain target detection data of the multiple pressure detection elements, and compare the target detection data with a preset detection threshold to determine whether the target test is qualified.

[0010] In one possible design, the valve group includes a first air intake valve, a second air intake valve, a first exhaust valve, a second exhaust valve, and a third exhaust valve; the first air intake valve and the second air intake valve are both disposed on the first pipeline, and the second air intake valve is disposed between an external air source and the first air intake valve. The second air intake valve is also connected to the external atmosphere through a pipeline, and the first exhaust valve is disposed on the pipeline connecting the second air intake valve and the external atmosphere; the second exhaust valve and the third exhaust valve are both disposed on the second pipeline, and the second exhaust valve is disposed between the air outlet shut-off valve and the third exhaust valve.

[0011] The pressure detection assembly includes a first pressure detection element, which is used to detect the gas pressure value of the pipeline between the first intake valve and the second intake valve;

[0012] The controller, when performing an air tightness test, is specifically used to:

[0013] Controlling the first intake valve, the second intake valve, and the second exhaust valve to be closed, and controlling the first exhaust valve and the third exhaust valve to be open;

[0014] Obtaining target pressure differences of the first pressure detection element in adjacent detection cycles;

[0015] determining a pressure leakage rate based on the target pressure difference;

[0016] When the pressure leakage rate is less than the preset pressure leakage rate, it is determined that the air tightness test is qualified.

[0017] In a possible design, the pressure detection assembly further includes a second pressure detection element, and the second pressure detection element is used to detect the gas pressure value between the second exhaust valve and the third exhaust valve;

[0018] The controller, when performing the first pressure reducing valve pressure test, is specifically used to:

[0019] Controlling the first intake valve, the second intake valve, the first exhaust valve, and the second exhaust valve to open;

[0020] obtaining a pressure value of the second pressure detecting element;

[0021] When the pressure value of the second pressure detection element is within the preset pressure range, it is determined that the pressure test of the first pressure reducing valve is qualified.

[0022] In one possible design, the controller, when performing the inflation / exhaust time test, is specifically configured to:

[0023] Obtaining a pressure rise time required for the pressure value of the second pressure detection element to rise from a first preset pressure to a second preset pressure; and a pressure drop time required for the pressure value of the second pressure detection element to drop from the second preset pressure to the first preset pressure;

[0024] When the pressure increase time is within the first preset time threshold and the pressure reduction time is within the second preset time threshold, it is determined that the charging and exhaust time test is qualified.

[0025] In one possible design, the controller, when performing the shut-off valve test, is specifically configured to:

[0026] Controlling the first intake valve, the second intake valve, and the second exhaust valve to open;

[0027] When the air inlet shut-off valve and the air outlet shut-off valve are both open, obtaining an initial pressure value of the first pressure detection element and an initial pressure value of the second pressure detection element;

[0028] When the air inlet shut-off valve or the air outlet shut-off valve is closed, obtaining a terminal pressure value of the first pressure detection element and a terminal pressure value of the second pressure detection element;

[0029] Obtaining a pressure difference between an ending pressure value and an initial pressure value of the first pressure detecting element, and obtaining a pressure difference between an ending pressure value and an initial pressure value of the second pressure detecting element;

[0030] When the pressure difference of the first pressure detection element is within the second preset pressure threshold range and the pressure difference of the second pressure detection element is within the third preset pressure threshold range, it is determined that the shutoff valve test is qualified.

[0031] In one possible design, the controller, when performing a solenoid valve response time test, is specifically configured to:

[0032] Controlling the first intake valve, the second intake valve, and the second exhaust valve to open;

[0033] When the solenoid valve is powered on, obtaining a response time of the second pressure detection element for displaying a detection pressure value;

[0034] When the response time is less than a preset response time threshold, it is determined that the solenoid valve response time test is qualified.

[0035] In one possible design, the valve group further includes a first on-off valve, a second on-off valve, and a second pressure-reducing valve disposed on the first pipeline; the first on-off valve, the second on-off valve, and the second pressure-reducing valve are sequentially disposed between the external air source and the second air inlet valve; the pressure detection assembly further includes a third pressure detection element and a fourth pressure detection element, the third pressure detection element being used to detect the gas pressure between the external air source and the first on-off valve, and the fourth pressure detection element being used to detect the gas pressure between the second on-off valve and the second pressure-reducing valve;

[0036] The controller is further used to:

[0037] controlling the first switch valve to open and obtaining the pressure value of the third pressure detection element;

[0038] When the pressure value of the third pressure detection element is within a fourth preset pressure threshold range, controlling the second switch valve and the second intake valve to open;

[0039] controlling the second pressure reducing valve to reduce pressure, and obtaining pressure values ​​of the first pressure detecting element and the fourth pressure detecting element;

[0040] When the pressure value of the first pressure detecting element is equal to the pressure value of the fourth pressure detecting element, the second pressure reducing valve is controlled to stop pressure reduction.

[0041] In one possible design, the testing device further includes a pressure switch testing element, the pressure switch testing element being connected to the pressure switch and being in communication with the controller; the valve group further includes a third air intake valve, the third air intake valve being disposed on the third pipeline;

[0042] The controller, when performing pressure switch testing, is specifically used to:

[0043] Controlling the first intake valve, the second intake valve, the third intake valve and the second exhaust valve to open;

[0044] When the state of the pressure switch is switched, obtaining the pressure value of the pressure switch test element;

[0045] When the pressure value of the pressure switch test element is at a first preset pressure threshold, it is determined that the pressure switch test is qualified.

[0046] In one possible design, the valve group further includes a third on-off valve and a third pressure reducing valve, the third on-off valve being disposed on the pipeline between the external air source and the third air inlet valve, and the third pressure reducing valve being disposed on the pipeline between the external air source and the third on-off valve; the pressure detection assembly further includes a fifth pressure detecting element and a sixth pressure detecting element, the fifth pressure detecting element being used to detect the gas pressure value of the pipeline between the third pressure reducing valve and the third on-off valve; and the sixth pressure detecting element being used to detect the gas pressure value of the pipeline between the third air inlet valve and the test interface;

[0047] The controller, when performing pressure switch testing, is also used to:

[0048] controlling the third pressure reducing valve to reduce pressure, and obtaining pressure values ​​of the fifth pressure detecting element and the sixth pressure detecting element;

[0049] When the pressure value of the fifth pressure detecting element is equal to the pressure value of the sixth pressure detecting element, the third pressure reducing valve is controlled to stop reducing pressure.

[0050] In a second aspect, the present application provides a method for testing a tread cleaning control module, comprising:

[0051] Upon receiving a test instruction, the multiple control valves are selectively opened or closed according to the test instruction to perform a target test; wherein the target test is any one of an air tightness test, a first pressure reducing valve pressure test, a charging and exhaust time test, a pressure switch test, a shut-off valve test, and a solenoid valve response time test;

[0052] Target detection data of a plurality of pressure detection elements are acquired, and the target detection data are compared with a preset detection threshold value to determine whether the target test is qualified.

[0053] The present application provides a testing device and method for a tread cleaning control module. The testing device for the tread cleaning control module comprises a controller, multiple control valves, and multiple pressure detection elements. The controller can control the valve group and pressure detection components to perform corresponding testing operations according to different test instructions, eliminating the need for frequent manual intervention and improving testing efficiency. The pressure detection elements can accurately detect gas pressure data in each pipeline. The controller compares the acquired pressure data with a preset detection threshold to accurately determine whether the test is qualified, thereby improving the accuracy and reliability of the test results. Furthermore, the testing device can test the tread cleaning control module for multiple key performance indicators, including air tightness testing, first pressure reducing valve pressure testing, filling and exhaust time testing, pressure switch testing, shut-off valve testing, and solenoid valve response time testing. Compared with traditional testing methods, this device can comprehensively cover various performance parameters of the tread cleaning control module and promptly identify potential fault hazards. BRIEF DESCRIPTION OF THE DRAWINGS

[0054] The accompanying drawings, which are incorporated in and constitute a part of this specification, illustrate embodiments consistent with the present application and, together with the description, serve to explain the principles of the present application.

[0055] Figure 1 It is a structural diagram of a tread cleaning control module in the related art;

[0056] Figure 2 A schematic structural diagram of a testing device for a tread cleaning control module according to an embodiment of the present application;

[0057] Figure 3 A schematic diagram of a testing device and a testing method of a tread cleaning control module provided in one embodiment of the present application;

[0058] Figure 4 A schematic structural diagram of a testing device for a tread cleaning control module according to another embodiment of the present application;

[0059] Figure 5 A flowchart of a testing method for a tread cleaning control module provided in one embodiment of the present application.

[0060] Reference numerals:

[0061] 100 - tread cleaning control module; 101 - air intake shutoff valve; 102 - first pressure reducing valve; 103 - solenoid valve; 104 - test interface; 105 - pressure switch; 106 - air outlet shutoff valve;

[0062] 10-External air source;

[0063] 20-controller;

[0064] 30-valve group; 31-first intake valve; 32-second intake valve; 33-first exhaust valve; 34-second exhaust valve; 35-third exhaust valve; 36-first on-off valve; 37-second on-off valve; 38-second pressure reducing valve; 39-third intake valve; 310-third on-off valve; 311-third pressure reducing valve;

[0065] 40 - pressure detection assembly; 41 - first pressure detection element; 42 - second pressure detection element; 43 - third pressure detection element; 44 - fourth pressure detection element; 45 - fifth pressure detection element; 46 - sixth pressure detection element;

[0066] 50 - Insulation resistance tester; 60 - Timer; 70 - Adjustable power supply; 81 - Start button; 82 - Stop button; 83 - Emergency stop button;

[0067] 90-Touch screen.

[0068] The above drawings illustrate specific embodiments of the present application, which will be described in more detail below. These drawings and the textual description are not intended to limit the scope of the present application in any way, but rather to illustrate the concepts of the present application to those skilled in the art by reference to specific embodiments. DETAILED DESCRIPTION

[0069] Exemplary embodiments will be described in detail herein, with examples illustrated in the accompanying drawings. In the following description, when referring to the drawings, identical numerals in different figures represent identical or similar elements, unless otherwise indicated. The embodiments described in the following exemplary embodiments are not intended to represent all embodiments consistent with the present application. Rather, they are merely examples of apparatus and methods consistent with certain aspects of the present application, as detailed in the appended claims.

[0070] In order to clearly understand the technical solution of the present application, the solution of the prior art is first introduced in detail.

[0071] In the field of rail transit, the tread cleaning device of EMUs plays an important role in improving the adhesion conditions of the wheel-rail contact surface, removing oil and impurities, and repairing minor damage to the wheel tread. Among them, the tread cleaning control module is the core control unit in the tread cleaning device. The tread cleaning control module plays a vital role in the braking performance and driving safety of the train. The tread cleaning control module specifically includes multiple key components such as the air intake shut-off valve, pressure reducing valve, solenoid valve, test interface, pressure switch and air outlet shut-off valve. The performance of these components directly affects the normal operation of the entire tread cleaning control module.

[0072] Currently, testing of the tread cleaning control module relies on manual operation, requiring manual switching of pipeline valves and recording of pressure parameters item by item. This results in low testing efficiency and is prone to data distortion due to human error. Furthermore, the testing methods used in related technologies can often only perform simple performance tests on individual components, and are unable to conduct comprehensive testing of the entire module, including air tightness testing, pressure reducing valve pressure testing, filling and exhaust time testing, pressure switch testing, shut-off valve testing, and solenoid valve response time testing. Therefore, the related technologies lack a comprehensive, efficient, and accurate testing device for testing the tread cleaning control module, making it impossible to detect potential fault hazards in a timely manner, thereby posing a risk to the safe operation of trains.

[0073] Therefore, when facing the technical problems of the above-mentioned prior art, the controller, control valve and air pressure detection element cooperate to realize multiple tests such as air tightness test, pressure reducing valve pressure test, filling and exhaust time test, etc., and then compare the preset threshold with the value of the pressure detection element to determine whether each test is qualified. In this way, the test efficiency can be improved to avoid data distortion caused by human error, and the tread cleaning control module can be comprehensively tested for multiple key performance indicators such as air tightness test, pressure reducing valve pressure test, filling and exhaust time test, pressure switch test, shut-off valve test and solenoid valve response time test, etc., to timely discover potential fault hazards and ensure the safe operation of the train.

[0074] The following specific embodiments describe in detail the technical solution of the present application and how the technical solution of the present application solves the above-mentioned technical problems. The following specific embodiments can be combined with each other, and the same or similar concepts or processes may not be repeated in some embodiments. The embodiments of the present application will be described below in conjunction with the accompanying drawings.

[0075] In the several embodiments provided in this application, it should be understood that the disclosed devices and methods can be implemented in other ways. For example, the device embodiments described above are merely illustrative. For example, the division of modules is only a logical function division. In actual implementation, there may be other division methods, such as multiple modules can be combined or integrated into another system, or some features can be ignored or not executed. In addition, the mutual coupling or direct coupling or communication connection shown or discussed can be an indirect coupling or communication connection through some interface, device or module, which can be electrical, mechanical or other forms.

[0076] Figure 1 It is a structural diagram of a tread cleaning control module in the related art; Figure 3 A test device for a tread cleaning control module and a test schematic diagram of a tread cleaning control module provided in an embodiment of the present application; Figure 1 and Figure 3 As shown in the figure, specifically, the tread cleaning control module 100 includes an air intake shut-off valve 101, a first pressure reducing valve 102, a solenoid valve 103, a test interface 104, a pressure switch 105 and an air outlet shut-off valve 106; the air intake shut-off valve 101 is connected to the external air source 10 through a first pipeline, the air outlet shut-off valve 106 is connected to the external atmosphere through a second pipeline, and the test interface 104 is connected to the external air source 10 through a third pipeline.

[0077] Optionally, the external air source 10 may be an air pump.

[0078] Figure 2 A schematic diagram of the structure of a test device for a tread cleaning control module according to an embodiment of the present application; Figure 2 As shown in , the present application provides a testing device for a tread cleaning control module, including: a controller 20 , a valve group 30 and a pressure detection component 40 .

[0079] Specifically, the valve group 30 includes multiple control valves, all of which are communicatively connected to the controller 20, and the multiple control valves are respectively arranged on the first pipeline, the second pipeline and the third pipeline, and the multiple control valves are used to control the connectivity status of the first pipeline, the second pipeline and the third pipeline; the pressure detection component 40 includes multiple pressure detection elements, and the multiple pressure detection elements are respectively arranged on the first pipeline, the second pipeline and the third pipeline, and are used to detect the gas pressure data on the first pipeline, the second pipeline and the third pipeline.

[0080] The controller 20 is used to control multiple control valves to selectively open or close according to the test instructions when receiving the test instructions to perform the target test; wherein the target test is any one of the air tightness test, the first pressure reducing valve pressure test, the inflation and exhaust time test, the pressure switch test, the shut-off valve test and the solenoid valve response time test; the controller 20 is also used to obtain the target detection data of the multiple pressure detection elements, and compare the target detection data with the preset detection threshold to determine whether the target test is qualified.

[0081] The valve group 30 includes multiple control valves, which are respectively arranged on the first pipeline, the second pipeline, and the third pipeline of the tread cleaning control module. Through the instructions sent by the controller 20, the control valves can accurately open or close the corresponding pipelines, thereby simulating the various working conditions of the tread cleaning control module in actual operation and providing the necessary air path conditions for various tests. For example, when performing an air tightness test, the control valve can close the second pipeline and the third pipeline, connect the first pipeline to the external air source 10, and allow gas to enter the interior of the tread cleaning control module, forming a closed air pressure environment to detect whether there is any leakage in the tread cleaning control module. Optionally, the multiple control valves can be electromagnetic control valves.

[0082] The pressure detection assembly 40 is composed of multiple pressure detection elements, which are installed in the first, second, and third pipelines of the tread cleaning control module. The pressure detection elements can accurately detect the gas pressure data in each pipeline in real time and transmit the measured data to the controller 20. Alternatively, the pressure detection element can be a pressure sensor, which can monitor the gas pressure in the pipeline in real time and convert the pressure signal into an electrical signal for transmission to the controller 20.

[0083] Among them, the controller 20 is the core component of the entire testing device and has control and data processing capabilities. When receiving a test instruction, the controller 20 controls the various control valves in the valve group 30 to selectively open or close according to the instruction content, thereby achieving different target test items, such as air tightness test, first pressure reducing valve pressure test, filling and exhaust time test, pressure switch test, shut-off valve test, and solenoid valve response time test. At the same time, the controller 20 can obtain the target detection data sent back by the pressure detection component 40 in real time, and compare the target detection data with the preset detection threshold. Based on the comparison results, the controller 20 can accurately determine whether the target test is qualified.

[0084] Optionally, the controller 20 may be an industrial control computer, which has high-speed data processing capabilities and precise control accuracy, and pre-stores control programs for various test items, preset detection thresholds, and corresponding test result evaluation criteria.

[0085] Among them, the air tightness test is used to evaluate the sealing performance of the tread cleaning control module. The first pressure reducing valve pressure test is used to determine whether the first pressure reducing valve 102 can stably adjust the gas pressure within the specified range, thereby evaluating the pressure regulation performance of the first pressure reducing valve 102. The inflation and exhaust time test is used to evaluate the inflation and exhaust performance of the tread cleaning control module. The pressure switch test is used to determine whether the pressure switch 105 can accurately operate at the correct pressure value, thereby evaluating the performance of the pressure switch 105. The shut-off valve test is used to determine whether the sealing performance and on-off control performance of the shut-off valve are good. The solenoid valve response time test is used to evaluate the response performance of the solenoid valve 103.

[0086] The test device for the tread cleaning control module provided in the embodiment of the present application is provided with a controller 20, multiple control valves, and multiple pressure detection elements. The controller 20 can automatically control the valve group 30 and the pressure detection component 40 to perform corresponding test operations according to different test instructions, eliminating the need for frequent manual intervention and improving test efficiency. The pressure detection element can accurately detect the gas pressure data of each pipeline. The controller 20 compares the acquired pressure data with the preset detection threshold and can accurately determine whether the test is qualified, thereby improving the accuracy and reliability of the test results. At the same time, the test device can test the tread cleaning control module for multiple key performance indicators, such as air tightness test, first pressure reducing valve pressure test, filling and exhaust time test, pressure switch test, shut-off valve test, and solenoid valve response time test. Compared with traditional testing methods, it can comprehensively cover various performance parameters of the tread cleaning control module and promptly discover potential fault hazards.

[0087] Specifically, in order to facilitate the understanding of the replacement scheme, refer to Figures 1 to 3 As shown in , firstly, the structure of the valve group 30 and the pressure detection component 40 in the solution of the present application is introduced.

[0088] The valve assembly 30 includes a first air intake valve 31, a second air intake valve 32, a first exhaust valve 33, a second exhaust valve 34, and a third exhaust valve 35. The first air intake valve 31 and the second air intake valve 32 are both disposed on the first pipeline, with the second air intake valve 32 disposed between the external air source 10 and the first air intake valve 31. The second air intake valve 32 is also connected to the external atmosphere via a pipeline. The first exhaust valve 33 is disposed on the pipeline connecting the second air intake valve 32 and the external atmosphere. The second exhaust valve 34 and the third exhaust valve 35 are both disposed on the second pipeline, with the second exhaust valve 34 disposed between the air outlet shutoff valve 106 and the third exhaust valve 35.

[0089] The valve assembly 30 also includes a first on-off valve 36, a second on-off valve 37, and a second pressure-reducing valve 38, which are disposed on the first pipeline. The first on-off valve 36, the second on-off valve 37, and the second pressure-reducing valve 38 are sequentially disposed between the external air source 10 and the second air inlet valve 32. Specifically, the first on-off valve 36, the second on-off valve 37, and the second pressure-reducing valve 38 are sequentially disposed between the external air source 10 and the second air inlet valve 32, forming a multi-stage gas control structure. The first on-off valve 36 serves as the main air inlet control, the second on-off valve 37 serves as the branch control, and the second pressure-reducing valve 38 is used to pre-depressurize the high-pressure gas from the external air source 10, ensuring that the pressure of the gas entering the test is within a safe and controllable range.

[0090] The valve assembly 30 also includes a third air inlet valve 39, a third on-off valve 310, and a third pressure reducing valve 311. The third air inlet valve 39 is disposed on the third pipeline, the third on-off valve 310 is disposed on the pipeline between the external air source 10 and the third air inlet valve 39, and the third pressure reducing valve 311 is disposed on the pipeline between the external air source 10 and the third on-off valve 310. The function of the third air inlet valve 39 is to control the test gas from entering the tread cleaning control module through the test interface 104, providing the necessary pressure conditions for the pressure switch test. The third pressure reducing valve 311 is disposed on the pipeline between the external air source 10 and the third on-off valve 310 and is used to pre-depressurize the high-pressure gas from the external air source 10, adjusting the gas pressure to a range suitable for the pressure switch test. The third on-off valve 310 is disposed on the pipeline between the third pressure reducing valve 311 and the third air inlet valve 39 and serves as a control switch for the test gas entering the third pipeline, cooperating with the third air inlet valve 39 to control the test gas.

[0091] Optionally, the intake valve, exhaust valve, switch valve and pressure reducing valve in the valve group 30 may all be electromagnetic control valves.

[0092] The pressure detection assembly 40 includes a first pressure detection element 41, a second pressure detection element 42, a third pressure detection element 43, and a fourth pressure detection element 44. The first pressure detection element 41 is used to detect the gas pressure in the pipeline between the first intake valve 31 and the second intake valve 32; the second pressure detection element 42 is used to detect the gas pressure between the second exhaust valve 34 and the third exhaust valve 35; the third pressure detection element 43 is used to detect the gas pressure between the external air source 10 and the first on-off valve 36; and the fourth pressure detection element 44 is used to detect the gas pressure between the second on-off valve 37 and the second pressure reducing valve 38.

[0093] Specifically, because the pipeline between the second exhaust valve 34 and the third exhaust valve 35 is directly connected to the air outlet of the tread cleaning control module, the second pressure detection element 42 can accurately reflect the gas pressure state after being adjusted by the first pressure reducing valve 102. The third pressure detection element 43 is used to detect the gas pressure between the external air source 10 and the first on-off valve 36, monitoring the pressure state of the external air source 10 in real time to ensure that it is within the normal operating range.

[0094] The pressure detection assembly 40 also includes a fifth pressure detection element 45 and a sixth pressure detection element 46. The fifth pressure detection element 45 is used to detect the gas pressure value of the pipeline between the third pressure reducing valve 311 and the third switch valve 310; the sixth pressure detection element 46 is used to detect the gas pressure value of the pipeline between the third air intake valve 39 and the test interface 104.

[0095] The fifth pressure detection element 45 is used to detect the gas pressure value of the pipeline between the third pressure reducing valve 311 and the third switch valve 310, and monitor the gas pressure adjusted by the third pressure reducing valve 311 in real time to ensure that it is within a safe and controllable range.

[0096] The sixth pressure detection element 46 is used to detect the gas pressure value of the pipeline between the third air inlet valve 39 and the test interface 104, directly measuring the pressure of the gas entering the test interface 104, and providing accurate pressure data for the pressure switch test.

[0097] Optionally, the multiple pressure detection elements in the pressure detection assembly 40 can all be air pressure sensors. Optionally, the multiple pressure detection elements in the pressure detection assembly 40 can also be digital pressure gauges.

[0098] refer to Figures 1 to 3 As shown in , as an optional implementation, based on any of the above embodiments, the controller 20, when performing the air tightness test, is specifically used to:

[0099] Control the first intake valve 31, the second intake valve 32 and the second exhaust valve 34 to close, and control the first exhaust valve 33 and the third exhaust valve 35 to open; obtain the target pressure difference of the first pressure detection element 41 in adjacent detection cycles; determine the pressure leakage rate based on the target pressure difference; when the pressure leakage rate is less than the preset pressure leakage rate, determine that the air tightness test is qualified.

[0100] Specifically, by controlling the first intake valve 31, the second intake valve 32 and the second exhaust valve 34 to close, the tread cleaning control module forms a closed test space; at the same time, the first exhaust valve 33 and the third exhaust valve 35 are controlled to open, and the pipelines unrelated to the test space are connected to the atmosphere to avoid interference with the test results.

[0101] Specifically, the target pressure difference of the first pressure detection element 41 in adjacent detection cycles is obtained. The setting of adjacent detection cycles can be adjusted according to actual test requirements and is generally set to a shorter time interval to improve the sensitivity of pressure change detection. Optionally, the detection cycle can be 1 minute, 2 minutes, etc.

[0102] Optionally, timing may be performed by a timer to determine an accurate detection period.

[0103] Specifically, the pressure leakage rate is determined based on the target pressure difference. Optionally, the pressure leakage rate can be calculated based on the time interval and pressure difference between adjacent detection cycles.

[0104] Specifically, the air tightness test is considered qualified if the pressure leakage rate is less than a preset pressure leakage rate. The preset pressure leakage rate is a threshold value pre-set based on the requirements of the tread cleaning control module and industry standards. When the actual pressure leakage rate is lower than this threshold, the air tightness of the tread cleaning control module is considered to meet the requirements. Optionally, the preset pressure leakage rate can be 5 kPa / min.

[0105] Optionally, when performing an air tightness test, there are four specific situations: an air tightness test when the air inlet shut-off valve 101, the air outlet shut-off valve 106, and the solenoid valve 103 are connected; an air tightness test when the air inlet shut-off valve 101 is closed; an air tightness test when the air outlet shut-off valve 106 is closed; and an air tightness test when the solenoid valve 103 is closed. It should be noted that the steps for the four air tightness tests are the same.

[0106] Optionally, pressure balancing is required before the air tightness test. Specifically:

[0107] The controller 20 controls the first on-off valve 36 to open. When the pressure value of the third pressure sensing element 43 is within a fourth preset pressure threshold range, which may be 1 MPa ± 0.1 MPa, the controller 20 controls the second on-off valve 37 and the second intake valve 32 to open, controls the second pressure reducing valve 38 to reduce pressure, and obtains the pressure values ​​of the first and fourth pressure sensing elements 41 and 44. When the pressure values ​​of the first and fourth pressure sensing elements 41 and 44 are equal and both stabilize between 850 and 900 kPa, the second pressure reducing valve 38 is stopped from reducing pressure. The tread cleaning control module is powered, and the pressure values ​​of the first and second pressure sensing elements 41 and 42 are obtained. When the pressure values ​​of the first and second pressure sensing elements 41 and 42 stabilize, an air tightness test can be performed.

[0108] Specifically, during the air tightness test, the tread cleaning control module is isolated from the outside world by closing the first air inlet valve 31, the second air inlet valve 32 and the second exhaust valve 34 to form a closed test space; then, by opening the first exhaust valve 33 and the third exhaust valve 35, the gas in the pipeline that is not related to the test space is discharged into the atmosphere to ensure the independence of the test space. In a closed test space, if there is an air tightness problem, the gas will leak out from the leakage point, causing the pressure in the test space to drop. The first pressure detection element 41 monitors the pressure changes in the pipeline between the first air inlet valve 31 and the second air inlet valve 32 in real time, and calculates the pressure leakage rate by comparing the pressure values ​​of adjacent detection cycles. If the pressure leakage rate is less than the preset threshold, it means that the pressure in the test space drops slowly and the air tightness is good; otherwise, it means that there is an obvious leakage point and the air tightness is unqualified.

[0109] The tread cleaning control module testing device provided in this embodiment calculates the pressure leakage rate by calculating the pressure difference between adjacent test cycles, enabling rapid and accurate detection of airtightness issues and ensuring the efficiency of airtightness testing. Furthermore, this testing method allows for flexible adjustment of the preset pressure leakage rate and test cycle based on different testing requirements and the model and specifications of the tread cleaning control module.

[0110] refer to Figures 1 to 3 As shown in , as an optional embodiment, based on any of the above embodiments, the controller 20, when performing the first pressure reducing valve pressure test, is specifically used to:

[0111] Control the opening of the first intake valve 31, the second intake valve 32, the first exhaust valve 33 and the second exhaust valve 34; obtain the pressure value of the second pressure detection element 42; when the pressure value of the second pressure detection element 42 is within the preset pressure range, determine that the first pressure reducing valve pressure test is qualified.

[0112] Specifically, the first air inlet valve 31, the second air inlet valve 32, the first exhaust valve 33, and the second exhaust valve 34 are controlled to be open to ensure that the gas from the external air source 10 can smoothly pass through the first pressure reducing valve 102 and enter the pipeline between the second exhaust valve 34 and the third exhaust valve 35.

[0113] The pressure value of the second pressure detecting element 42 directly reflects the gas pressure at the outlet of the first pressure reducing valve 102 , and is a key parameter for evaluating the performance of the first pressure reducing valve 102 .

[0114] Specifically, the first pressure reducing valve pressure test is determined to have passed if the pressure value of the second pressure detecting element 42 is within a preset pressure range. The preset pressure range is a reasonable pressure range pre-set based on the design requirements and actual operating conditions of the tread cleaning control module. The tread cleaning control module can only function properly when the outlet pressure of the first pressure reducing valve 102 is within this preset pressure range. Optionally, the preset pressure range can be 300 kPa ± 20 kPa.

[0115] Among them, the main function of the first pressure reducing valve 102 is to stably adjust the higher intake pressure to a suitable working pressure level. During the pressure test of the first pressure reducing valve, the gas from the external air source 10 enters the tread cleaning control module through the first intake valve 31 and the second intake valve 32. After being adjusted by the first pressure reducing valve 102, the pressure is reduced, and the gas then passes through the second exhaust valve 34 into the pipeline where the second pressure detection element 42 is located. The second pressure detection element 42 monitors the pressure value at this position in real time and transmits the data to the controller 20. The controller 20 compares the actually detected pressure value with the preset pressure range. If the pressure value is within the preset pressure range, it means that the first pressure reducing valve 102 can work normally and the pressure regulation performance meets the requirements; if the pressure value exceeds the preset pressure range, it means that the first pressure reducing valve 102 has a fault or inaccurate adjustment.

[0116] Optionally, before performing the pressure test on the first pressure reducing valve, pressure balancing is also required. Specifically:

[0117] The controller 20 controls the first on-off valve 36 to open. When the pressure value of the third pressure sensing element 43 is within a fourth preset pressure threshold range, which may be 1 MPa ± 0.1 MPa, the controller 20 controls the second on-off valve 37 and the second intake valve 32 to open, controls the second pressure reducing valve 38 to reduce pressure, obtains the pressure values ​​detected by the first pressure sensing element 41 and the fourth pressure sensing element 44, and stops the pressure reduction operation of the second pressure reducing valve 38 when the pressure values ​​detected by the first and fourth pressure sensing elements 41 and 44 are equal and both stabilize between 850 and 900 kPa. The controller 20 controls the first exhaust valve 33 to open, and opens the intake shutoff valve 101 and the exhaust shutoff valve 106 of the tread cleaning control module. The tread cleaning control module is powered, and a pressure test of the first pressure reducing valve is performed.

[0118] The test device for the tread cleaning control module provided in the embodiment of the present application can directly measure the actual working pressure at the outlet of the first pressure reducing valve 102 by setting a pressure detection element between the second exhaust valve 34 and the third exhaust valve 35, thereby avoiding errors that may be caused by indirect measurement. During the test, the second pressure detection element 42 monitors the pressure changes in real time, and can promptly detect pressure fluctuations or instability that may occur in the operation of the first pressure reducing valve 102; the setting of the preset pressure range fully takes into account the actual working conditions and safety requirements of the tread cleaning control module.

[0119] refer to Figures 1 to 3 As shown in , as an optional embodiment, based on any of the above embodiments, the controller 20, when performing the filling and exhaust time test, is specifically used to:

[0120] Obtain the rise time required for the pressure value of the second pressure detection element 42 to rise from the first preset pressure to the second preset pressure; and the drop time required for the pressure value of the second pressure detection element 42 to drop from the second preset pressure to the first preset pressure; when the rise time is within the first preset time threshold, and the drop time is within the second preset time threshold, determine that the inflation and exhaust time test is qualified.

[0121] Specifically, at the beginning of the test, the tread cleaning control module is inflated, and the second pressure detection element 42 monitors the pressure change in real time. The time interval from when the pressure reaches the first preset pressure to when the pressure rises to the second preset pressure is the pressure rise time.

[0122] Specifically, after the inflation process is completed, the gas in the tread cleaning control module is discharged, and the second pressure detection element 42 continues to monitor the pressure change. The time interval from when the pressure reaches the second preset pressure to when the pressure drops to the first preset pressure is the pressure reduction time.

[0123] Specifically, the charging and exhaust time test is determined to be qualified when the pressure rise time is within a first preset time threshold and the pressure fall time is within a second preset time threshold. The first and second preset time thresholds are pre-set time ranges based on the design requirements and actual operating conditions of the tread cleaning control module. The charging and exhaust performance of the tread cleaning control module is considered to meet the requirements only when the pressure rise time and pressure fall time are within the corresponding preset time thresholds.

[0124] The first preset time threshold is a time range preset according to the designed inflation rate and volume of the tread cleaning control module. Optionally, the first preset time threshold T1 is: 2s≤T1≤3s.

[0125] The second preset time threshold is a time range preset based on the designed exhaust rate and sealing performance of the tread cleaning control module. Optionally, the second preset time threshold T2 is: 3s≤T2≤4s.

[0126] It should be noted that the inflation and exhaust time is one of the important indicators for measuring the performance of the tread cleaning control module. The boost time reflects the inflation efficiency and resistance characteristics of the tread cleaning control module. If the boost time is too long, it may indicate problems such as blockage in the intake passage, poor valve opening, or improper adjustment of the first pressure reducing valve 102. The depressurization time reflects the exhaust efficiency and sealing of the tread cleaning control module. If the depressurization time is too long, it may indicate blockage in the exhaust passage, lax valve closure, or air leakage in the module. By accurately measuring the boost and depressurization times and comparing them with preset thresholds, the inflation and exhaust performance of the tread cleaning control module can be comprehensively evaluated.

[0127] Optionally, the first preset pressure and the second preset pressure are pre-set pressure values. The first preset pressure and the second preset pressure can be set according to the normal operating pressure range of the tread cleaning control module. For example, the first preset pressure can be set to the maximum operating pressure of the module, such as 1 MPa, and the second preset pressure can be set to the minimum operating pressure of the module, such as 0.1 MPa or 0.

[0128] Optionally, before performing the first pressure reducing valve pressure test, a pressure balancing process is also required. The specific operation steps are the same as those during the first pressure reducing valve pressure test, so they are not described in detail.

[0129] The tread cleaning control module testing device provided in the embodiments of the present application evaluates the module's inflation and exhaust performance by measuring the pressure rise and fall times and comparing them with preset time thresholds. Furthermore, the device can be flexibly adjusted to accommodate different models and specifications of tread cleaning control modules simply by modifying the first and second preset pressures, as well as the first and second preset time thresholds, thus offering high versatility and adaptability.

[0130] refer to Figures 1 to 3 As shown in FIG, as an optional embodiment, based on any of the above embodiments, the controller 20, when performing the shut-off valve test, is specifically configured to:

[0131] Control the opening of the first air intake valve 31, the second air intake valve 32 and the second air exhaust valve 34; when the air intake shut-off valve 101 and the air outlet shut-off valve 106 are both open, obtain the initial pressure value of the first pressure detection element 41 and the initial pressure value of the second pressure detection element 42; when the air intake shut-off valve 101 or the air outlet shut-off valve 106 is closed, obtain the terminal pressure value of the first pressure detection element 41 and the terminal pressure value of the second pressure detection element 42.

[0132] Obtain the pressure difference between the end pressure value and the initial pressure value of the first pressure detection element 41, and obtain the pressure difference between the end pressure value and the initial pressure value of the second pressure detection element 42; when the pressure difference of the first pressure detection element 41 is within the second preset pressure threshold range and the pressure difference of the second pressure detection element 42 is within the third preset pressure threshold range, determine that the shut-off valve test is qualified.

[0133] Specifically, by controlling the opening of the first air intake valve 31, the second air intake valve 32 and the second exhaust valve 34, the gas from the external air source 10 can enter the tread cleaning control module through the first pipeline and be discharged through the second pipeline, ensuring that the system is in a normal ventilation state.

[0134] Specifically, when both the intake shutoff valve 101 and the outlet shutoff valve 106 are open, the initial pressure values ​​of the first pressure sensing element 41 and the second pressure sensing element 42 are obtained. At this point, the test device and the tread cleaning control module are in a stable ventilation state, and the initial pressure values ​​of the first pressure sensing element 41 and the second pressure sensing element 42 reflect the pressure distribution under normal operating conditions.

[0135] Specifically, the inlet shutoff valve 101 and the outlet shutoff valve 106 are closed separately. When one of the shutoff valves is closed, the final pressure value of the first pressure sensing element 41 and the final pressure value of the second pressure sensing element 42 are obtained. It should be noted that closing either shutoff valve will cause a change in the pressure distribution, and the final pressure value reflects the pressure state after the shutoff valve is closed.

[0136] Specifically, the pressure difference between the final pressure value and the initial pressure value of the first pressure detection element 41 and the pressure difference between the final pressure value and the initial pressure value of the second pressure detection element 42 are calculated. If the pressure difference of the first pressure detection element 41 is within the second preset pressure threshold range and the pressure difference of the second pressure detection element 42 is within the third preset pressure threshold range, the shut-off valve test is determined to be qualified.

[0137] The second preset pressure threshold range and the third preset pressure threshold range are pressure value ranges pre-set based on the design performance of the shut-off valve and system requirements, and are used to determine whether the pressure change after the shut-off valve is closed meets expectations. Optionally, the second preset pressure threshold can be ±10kPa, and the third preset pressure threshold can be 300±10kPa. If the pressure difference of the first pressure detection element 41 is not within the second preset pressure threshold range, and the pressure difference of the second pressure detection element 42 is not within the third preset pressure threshold range, it may indicate that the air inlet shut-off valve 101 or the air outlet shut-off valve 106 is not closed tightly or there is leakage.

[0138] It should be noted that the shut-off valves play a key role in controlling the flow of gas within the tread cleaning control module. The inlet shut-off valve 101 controls the flow of gas between the external air source 10 and the module's interior, while the outlet shut-off valve 106 controls the flow of gas between the module's interior and the external atmosphere. Under normal operating conditions, both shut-off valves are open, allowing gas to flow freely. When it is necessary to cut off the gas supply or prevent gas emissions, the shut-off valves must be reliably closed. By testing the pressure changes before and after the shut-off valves are closed, the sealing performance and on-off control capabilities of the shut-off valves can be evaluated.

[0139] Optionally, pressure balancing is required before testing the shut-off valve. Specifically:

[0140] Controller 20 controls first on-off valve 36 to open. When the pressure value of third pressure sensing element 43 is within a fourth preset pressure threshold range, which may be 1 MPa ± 0.1 MPa, controller 20 controls second on-off valve 37 and second intake valve 32 to open, controls second pressure reducing valve 38 to reduce pressure, and obtains the pressure values ​​detected by first pressure sensing element 41 and fourth pressure sensing element 44. When the pressure values ​​of first pressure sensing element 41 and fourth pressure sensing element 44 are equal and both stabilize between 850 and 900 kPa, controller 20 stops reducing pressure by second pressure reducing valve 38. Power is supplied to the tread cleaning control module, and a shutoff valve test is performed.

[0141] The tread cleaning control module testing device provided in the present embodiment can comprehensively evaluate the sealing effectiveness and on-off control capabilities of the shutoff valves by separately testing the closing performance of the inlet shutoff valve 101 and the outlet shutoff valve 106, ensuring their reliable operation in practical applications. Abnormal pressure differences between the first pressure sensing element 41 and the second pressure sensing element 42 can quickly locate the fault.

[0142] refer to Figures 1 to 3 As shown in , as an optional implementation, based on any of the above embodiments, the controller 20, when performing the solenoid valve response time test, is specifically used to:

[0143] Control the opening of the first intake valve 31, the second intake valve 32 and the second exhaust valve 34; when the solenoid valve 103 is energized, obtain the response time of the second pressure detection element 42 to display the detection pressure value; when the response time is less than the preset response time threshold, determine that the solenoid valve response time test is qualified.

[0144] Specifically, by controlling the opening of the first air intake valve 31, the second air intake valve 32 and the second exhaust valve 34, the gas from the external air source 10 can enter the tread cleaning control module through the first pipeline and be discharged through the second pipeline, ensuring that the system is in a normal ventilation state.

[0145] When the solenoid valve 103 is powered on, the time interval from the power-on moment to the moment when the detected pressure value displayed by the second pressure detecting element 42 changes significantly is the response time of the solenoid valve 103 .

[0146] Specifically, if the response time is less than a preset response time threshold, the solenoid valve response time test is determined to have passed. The preset response time threshold is a time range pre-set based on the design performance of the solenoid valve 103 and the actual operating requirements of the tread cleaning control module, and is used to determine whether the response speed of the solenoid valve 103 meets the requirements. Optionally, in this embodiment, the preset response time threshold is set to 1 second.

[0147] Alternatively, different types and specifications of solenoid valves 103 may have different designed response times. For example, a direct-acting solenoid valve 103 typically has a shorter response time, while a pilot-operated solenoid valve 103 typically has a longer response time. Therefore, the preset response time threshold can be determined based on the specific model and technical parameters of the solenoid valve 103 used.

[0148] It should be noted that if the response time of the solenoid valve 103 exceeds the preset response time threshold, it may indicate that the solenoid valve 103 has problems such as wear, sticking, coil aging, etc., and needs to be repaired or replaced in time.

[0149] It should be noted that the solenoid valve 103 plays a role in controlling the on-off or flow direction of gas in the tread cleaning control module, and its response time directly affects the working efficiency and performance of the module. When the solenoid valve 103 is energized, the electromagnetic coil inside it generates a magnetic field, driving the valve core to move rapidly, thereby changing the flow path or state of the gas. During this process, the pressure at the location of the second pressure detection element 42 will change with the action of the solenoid valve 103. By recording the time interval from the solenoid valve 103 being energized to the pressure detection element detecting the pressure change, the response speed of the solenoid valve 103 can be accurately evaluated. If the response time is too long, it may cause the module to delay its action and affect its normal operation; if the response time is too short, it may mean that the stability of the solenoid valve 103 is poor and it is prone to vibration and noise.

[0150] Optionally, before testing the solenoid valve response time, pressure balancing is also required. Specifically:

[0151] The controller 20 controls the first on-off valve 36 to open. When the pressure value of the third pressure sensing element 43 is within a fourth preset pressure threshold range, which may be 1 MPa ± 0.1 MPa, the controller 20 controls the second on-off valve 37 and the second intake valve 32 to open, controls the second pressure reducing valve 38 to reduce pressure, obtains the pressure values ​​detected by the first pressure sensing element 41 and the fourth pressure sensing element 44, and stops the second pressure reducing valve 38 from reducing pressure when the pressure values ​​detected by the first and fourth pressure sensing elements 41 and 44 are equal and both stabilize between 850 and 900 kPa. The controller 20 also opens the intake shutoff valve 101 and the outlet shutoff valve 106 of the tread cleaning control module, powers the tread cleaning control module, and performs a solenoid valve response time test.

[0152] The tread cleaning control module testing device provided in the present embodiment accurately assesses the actual operating performance of solenoid valve 103 by measuring the response time of pressure changes after solenoid valve 103 is energized. During the test, second pressure detection element 42 monitors pressure changes in real time, promptly capturing pressure fluctuations caused by the operation of solenoid valve 103 and ensuring the accuracy and reliability of response time measurement. Comparing the measured response time with a preset response time threshold allows for a quick and intuitive determination of the response performance of solenoid valve 103, ensuring testing efficiency.

[0153] refer to Figures 1 to 3 As shown in , as an optional embodiment, based on any of the above embodiments, the testing device further includes a pressure switch testing element, the pressure switch testing element is connected to the pressure switch 105, and the pressure switch testing element is also in communication with the controller 20;

[0154] The controller 20, when performing a pressure switch test, is specifically used to: control the opening of the first air intake valve 31, the second air intake valve 32, the third air intake valve 39 and the second exhaust valve 34; obtain the pressure value of the pressure switch test element when the state of the pressure switch 105 is switched; and determine that the pressure switch test is qualified when the pressure value of the pressure switch test element is at a first preset pressure threshold.

[0155] Specifically, the testing device also includes a pressure switch test element, which is directly connected to the pressure switch 105 and is used to accurately measure the actual pressure value when the pressure switch 105 is actuated. The pressure switch test element is also in communication with the controller 20 and transmits the measurement data to the controller 20 in real time for analysis and processing.

[0156] Specifically, by controlling the opening of first air inlet valve 31, second air inlet valve 32, third air inlet valve 39, and second air outlet valve 34, air from external air source 10 can enter the tread cleaning control module through the first and third pipelines and be discharged through the second pipeline, ensuring that the tread cleaning control module is in a normal ventilation state. At this time, pressure switch 105 is in its initial state (normally open or normally closed).

[0157] Afterwards, by adjusting the pressure of the external air source 10 or adjusting the third pressure reducing valve 311, the pressure in the tread cleaning control module is gradually increased or decreased. When the pressure changes to a certain extent, the pressure switch 105 will switch its state (from normally open to normally closed or from normally closed to normally open). At the moment of the state switching of the pressure switch 105, the pressure value of the pressure switch test element is obtained. When the pressure value of the pressure switch test element is at the first preset pressure threshold, it is determined that the pressure switch test is qualified. Among them, the first preset pressure threshold is a pressure value pre-set according to the pressure requirement of the pressure switch 105, which is used to determine whether the pressure switch 105 can accurately operate at the correct pressure point. Optionally, the first preset pressure threshold can be 1000kPa±10kPa or 850kPa±10kPa.

[0158] Optionally, when the pressure switch test fails, it is necessary to adjust the tail adjustment device of the pressure measuring point on the tread cleaning control module and perform the pressure switch test again until the test passes.

[0159] It should be noted that pressure switch 105 is a safety protection element in the tread cleaning control module. Its function is to automatically switch states when the pressure reaches a set value, triggering the corresponding control signal or protective action. For example, if the pressure is too high, pressure switch 105 can cut off the air intake channel to prevent overload.

[0160] The testing device for the tread cleaning control module provided in the embodiment of the present application directly measures the actual pressure value when the pressure switch 105 is actuated through the pressure switch testing element, and directly compares the measured pressure value with the first preset pressure threshold value, so as to accurately determine whether the performance of the pressure switch 105 is qualified and ensure its reliable operation in actual applications.

[0161] refer to Figures 1 to 3 As shown in , as an optional embodiment, based on any of the above embodiments, the controller 20, when performing the pressure switch test, is further used to:

[0162] The third pressure reducing valve 311 is controlled to reduce pressure, and the pressure values ​​of the fifth pressure detecting element 45 and the sixth pressure detecting element 46 are obtained; when the pressure value of the fifth pressure detecting element 45 is equal to the pressure value of the sixth pressure detecting element 46, the third pressure reducing valve 311 is controlled to stop reducing pressure.

[0163] The function of the third pressure reducing valve 311 is to adjust the high-pressure gas of the external air source 10 to a pressure level that matches the pressure switch test.

[0164] Specifically, the pressure values ​​of the fifth pressure sensing element 45 and the sixth pressure sensing element 46 are compared to determine whether the pressure in the third pipeline has reached equilibrium. If the pressure values ​​of the fifth pressure sensing element 45 and the sixth pressure sensing element 46 are equal, it indicates that the third pressure reducing valve 311 has adjusted the pressure to a stable state. At this point, the third pressure reducing valve 311 is controlled to stop reducing pressure, providing a stable pressure environment for the pressure switch test.

[0165] The test device of the tread cleaning control module provided in the embodiment of the present application realizes the regulation and control of the test gas pressure through the coordinated action of the third pressure reducing valve 311 and the third switch valve 310, and can provide a more stable and accurate pressure environment for the pressure switch test; the pressure values ​​at the outlet of the third pressure reducing valve 311 and the inlet of the test interface 104 are monitored respectively by the fifth pressure detection element 45 and the sixth pressure detection element 46. When the two pressure values ​​are equal, it indicates that the pressure in the pipeline has reached a balanced state, ensuring that the pressure switch 105 is subjected to stable and accurate pressure during the test process.

[0166] As an optional implementation, based on any one of the above embodiments, in addition to the air tightness test, first pressure reducing valve pressure test, inflation and exhaust time test, pressure switch test, shut-off valve test and solenoid valve response time test mentioned in the above embodiments, it may also include a fault simulation test, high and low pressure test and insulation test.

[0167] Among them, the fault simulation test is used to simulate the situation of air leakage in the tread cleaning device to see whether the pressure switch of the tread cleaning control module can be automatically disconnected.

[0168] During the high and low voltage tests, the power supply voltages are set to high and low voltage, respectively. The pressure values ​​of the second pressure sensing element are measured when the power is on and off. If the pressure values ​​of the second pressure sensing element change significantly, the high and low voltage tests are considered passed. The high voltage power supply can be 143V DC, and the low voltage power supply can be 77V DC.

[0169] Figure 4 A schematic diagram of a test device for a tread cleaning control module according to another embodiment of the present invention; Figure 4 As shown in FIG, the insulation test can be performed using an insulation resistance tester 50, which is connected to the solenoid valve 103 on the tread cleaning control module 100 via a plug. The insulation resistance tester 50 is used to test the resistance between the core of the power cable connecting the tread cleaning control module 100 and the ground point. The insulation resistance tester 50 is used to test the resistance between the core of the power cable connecting the tread cleaning control module 100 and the ground point under the condition of 500V DC. The insulation resistance value should be no less than 30MΩ.

[0170] refer to Figure 4 As shown in , the test device of the tread cleaning control module may optionally further include a timer 60, an adjustable power supply 70, a start button 81, a stop button 82, an emergency stop button 83, and a touch screen 90. These timer 60, adjustable power supply 70, start button 81, stop button 82, emergency stop button 83, and touch screen 90 are all communicatively connected to the controller 20. The timer 60 is used for timing; the adjustable power supply 70 can provide a voltage between 0 and 300V. The start button 81 is used to power on the test device, the stop button 82 is used to stop the test device, and the emergency stop button 83 is used to stop the test device in an emergency. The touch screen 90 can display an operation interface, which includes a homepage, a menu page, an execution page, and a results page. The homepage includes the device name, test content prompts, and function keys. The menu page lists all test items in order. Clicking a function key enters the execution page for the corresponding test item. The execution page includes the test item name, operation prompts, and test result input. The Execution page is used to execute test items. Enter the Execution page and follow the prompts. After the operation is completed, the test results are recorded in the corresponding interface. The Results page contains a result display list and function keys for recording test results. The list content includes test steps, standard parameters, test results, actual test values, etc., clearly displaying whether the test is qualified and the calculated data.

[0171] Figure 5 A flowchart of a testing method for a tread cleaning control module provided in one embodiment of the present application is shown as follows: Figure 5 As shown, the execution subject of this embodiment is the controller. A testing method of a tread cleaning control module provided in this embodiment includes the following steps:

[0172] S201. Upon receiving a test instruction, selectively open or close multiple control valves according to the test instruction to perform a target test; wherein the target test is any one of an air tightness test, a first pressure reducing valve pressure test, a charging and exhaust time test, a pressure switch test, a shutoff valve test, and a solenoid valve response time test;

[0173] S202 , obtaining target detection data of a plurality of pressure detection elements, and comparing the target detection data with a preset detection threshold to determine whether the target test is qualified.

[0174] Optionally, an air tightness test is performed, including: controlling the first air intake valve, the second air intake valve and the second exhaust valve to close, and controlling the first exhaust valve and the third exhaust valve to open; obtaining the target pressure difference of the first pressure detection element in adjacent detection cycles; determining the pressure leakage rate based on the target pressure difference; and determining that the air tightness test is qualified when the pressure leakage rate is less than the preset pressure leakage rate.

[0175] Optionally, an inflation and exhaust time test is performed, including: obtaining the rise time required for the pressure value of the second pressure detection element to rise from the first preset pressure to the second preset pressure; and the drop time required for the pressure value of the second pressure detection element to drop from the second preset pressure to the first preset pressure; when the rise time is within the first preset time threshold, and the drop time is within the second preset time threshold, it is determined that the inflation and exhaust time test is qualified.

[0176] Optionally, a shut-off valve test is performed, including: controlling the opening of the first intake valve, the second intake valve and the second exhaust valve; obtaining the initial pressure value of the first pressure detection element and the initial pressure value of the second pressure detection element when both the intake shut-off valve and the outlet shut-off valve are open; obtaining the terminal pressure value of the first pressure detection element and the terminal pressure value of the second pressure detection element when the intake shut-off valve or the outlet shut-off valve is closed; obtaining the pressure difference between the terminal pressure value and the initial pressure value of the first pressure detection element, and obtaining the pressure difference between the terminal pressure value and the initial pressure value of the second pressure detection element; and determining that the shut-off valve test is qualified when the pressure difference of the first pressure detection element is within the second preset pressure threshold range and the pressure difference of the second pressure detection element is within the third preset pressure threshold range.

[0177] Optionally, a solenoid valve response time test is performed, including: controlling the first intake valve, the second intake valve and the second exhaust valve to open; when the solenoid valve is energized, obtaining the response time of the second pressure detection element to display the detection pressure value; when the response time is less than a preset response time threshold, determining that the solenoid valve response time test is qualified.

[0178] Optionally, the method also includes: controlling the first switch valve to open and obtaining the pressure value of the third pressure detection element; when the pressure value of the third pressure detection element is within a fourth preset pressure threshold range, controlling the second switch valve and the first intake valve to open; controlling the second pressure reducing valve to reduce pressure and obtaining the pressure values ​​of the first pressure detection element and the fourth pressure detection element; when the pressure value of the first pressure detection element and the pressure value of the fourth pressure detection element are equal, controlling the second pressure reducing valve to stop reducing pressure.

[0179] Optionally, a pressure switch test is performed, including: controlling the opening of the first intake valve, the second intake valve, the third intake valve and the second exhaust valve; obtaining the pressure value of the pressure switch test element when the state of the pressure switch is switched; and determining that the pressure switch test is qualified when the pressure value of the pressure switch test element is at a first preset pressure threshold.

[0180] Optionally, performing a pressure switch test also includes: controlling the third pressure reducing valve to reduce pressure, and obtaining the pressure values ​​of the fifth pressure detecting element and the sixth pressure detecting element; when the pressure value of the fifth pressure detecting element is equal to the pressure value of the sixth pressure detecting element, controlling the third pressure reducing valve to stop reducing pressure.

[0181] It should be noted that the effect of the test method of the tread cleaning control module provided in this embodiment has been explained in the embodiment of the test device of the tread cleaning control module, so it will not be repeated here.

[0182] In addition, the functional modules in the various embodiments of the present application may be integrated into a single processing unit, or each module may exist physically separately, or two or more modules may be integrated into a single unit. The above-mentioned modules may be implemented in the form of hardware or hardware plus software functional units.

[0183] Those skilled in the art will appreciate that all or part of the steps in the above-described method embodiments can be implemented using hardware associated with program instructions. The aforementioned program can be stored in a computer-readable storage medium. When executed, the program performs the steps of the above-described method embodiments. The aforementioned storage medium includes various media capable of storing program code, such as ROM, RAM, magnetic disks, or optical disks.

[0184] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present application, rather than to limit them. Although the present application has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or make equivalent replacements for some or all of the technical features therein. These modifications or replacements do not deviate the essence of the corresponding technical solutions from the scope of the technical solutions of the embodiments of the present application.

Claims

1. A test device for a tread cleaning control module, comprising an air intake shutoff valve, a first pressure reducing valve, a solenoid valve, a test interface, a pressure switch, and an air outlet shutoff valve; the air intake shutoff valve is connected to an external air source via a first pipeline, the air outlet shutoff valve is connected to the outside atmosphere via a second pipeline, and the test interface is connected to the external air source via a third pipeline; It is characterized by: The testing device comprises: Controllers, valve groups and pressure detection components; The valve group includes a plurality of control valves, each of which is in communication with the controller and is respectively provided on the first pipeline, the second pipeline, and the third pipeline, and is used to control the communication state of the first pipeline, the second pipeline, and the third pipeline; The pressure detection assembly includes a plurality of pressure detection elements, which are respectively arranged on the first pipeline, the second pipeline and the third pipeline, and are used to detect gas pressure data on the first pipeline, the second pipeline and the third pipeline; The controller is used to control the multiple control valves to selectively open or close according to the test instructions when receiving a test instruction to perform a target test; wherein the target test is any one of an air tightness test, a first pressure reducing valve pressure test, an inflation and exhaust time test, a pressure switch test, a shut-off valve test, and a solenoid valve response time test; the controller is also used to obtain target detection data of the multiple pressure detection elements, and compare the target detection data with a preset detection threshold to determine whether the target test is qualified.

2. The testing device according to claim 1, wherein: The valve group includes a first air intake valve, a second air intake valve, a first exhaust valve, a second exhaust valve, and a third exhaust valve; the first air intake valve and the second air intake valve are both disposed on the first pipeline, and the second air intake valve is disposed between an external air source and the first air intake valve. The second air intake valve is also connected to the external atmosphere through a pipeline, and the first exhaust valve is disposed on the pipeline connecting the second air intake valve and the external atmosphere; the second exhaust valve and the third exhaust valve are both disposed on the second pipeline, and the second exhaust valve is disposed between the air outlet shut-off valve and the third exhaust valve; The pressure detection assembly includes a first pressure detection element, which is used to detect the gas pressure value of the pipeline between the first intake valve and the second intake valve; The controller, when performing an air tightness test, is specifically used to: Controlling the first intake valve, the second intake valve, and the second exhaust valve to be closed, and controlling the first exhaust valve and the third exhaust valve to be open; Obtaining target pressure differences of the first pressure detection element in adjacent detection cycles; determining a pressure leakage rate based on the target pressure difference; When the pressure leakage rate is less than the preset pressure leakage rate, it is determined that the air tightness test is qualified.

3. The testing device according to claim 2, characterized in that The pressure detection assembly further includes a second pressure detection element, which is used to detect the gas pressure value between the second exhaust valve and the third exhaust valve; The controller, when performing the first pressure reducing valve pressure test, is specifically used to: Controlling the first intake valve, the second intake valve, the first exhaust valve, and the second exhaust valve to open; obtaining a pressure value of the second pressure detecting element; When the pressure value of the second pressure detection element is within the preset pressure range, it is determined that the pressure test of the first pressure reducing valve is qualified.

4. The testing device according to claim 3, characterized in that: The controller, when performing the filling and exhaust time test, is specifically used to: Obtaining a pressure rise time required for the pressure value of the second pressure detection element to rise from a first preset pressure to a second preset pressure; and a pressure drop time required for the pressure value of the second pressure detection element to drop from the second preset pressure to the first preset pressure; When the pressure increase time is within the first preset time threshold and the pressure reduction time is within the second preset time threshold, it is determined that the charging and exhaust time test is qualified.

5. The testing device according to claim 3, characterized in that: The controller, when performing the shut-off valve test, is specifically used to: Controlling the first intake valve, the second intake valve, and the second exhaust valve to open; When the air inlet shut-off valve and the air outlet shut-off valve are both open, obtaining an initial pressure value of the first pressure detection element and an initial pressure value of the second pressure detection element; When the air inlet shut-off valve or the air outlet shut-off valve is closed, obtaining a terminal pressure value of the first pressure detection element and a terminal pressure value of the second pressure detection element; Obtaining a pressure difference between an ending pressure value and an initial pressure value of the first pressure detecting element, and obtaining a pressure difference between an ending pressure value and an initial pressure value of the second pressure detecting element; When the pressure difference of the first pressure detection element is within the second preset pressure threshold range and the pressure difference of the second pressure detection element is within the third preset pressure threshold range, it is determined that the shutoff valve test is qualified.

6. The testing device according to claim 3, characterized in that: The controller, when performing a solenoid valve response time test, is specifically used to: Controlling the first intake valve, the second intake valve, and the second exhaust valve to open; When the solenoid valve is powered on, obtaining a response time of the second pressure detection element for displaying a detection pressure value; When the response time is less than a preset response time threshold, it is determined that the solenoid valve response time test is qualified.

7. The testing device according to claim 3, characterized in that: The valve group further includes a first on-off valve, a second on-off valve, and a second pressure reducing valve provided on the first pipeline; the first on-off valve, the second on-off valve, and the second pressure reducing valve are sequentially provided between the external air source and the second air inlet valve; the pressure detection assembly further includes a third pressure detection element and a fourth pressure detection element, the third pressure detection element being used to detect the gas pressure between the external air source and the first on-off valve, and the fourth pressure detection element being used to detect the gas pressure between the second on-off valve and the second pressure reducing valve; The controller is further used to: controlling the first switch valve to open and obtaining the pressure value of the third pressure detection element; When the pressure value of the third pressure detection element is within a fourth preset pressure threshold range, controlling the second switch valve and the second intake valve to open; controlling the second pressure reducing valve to reduce pressure, and obtaining pressure values ​​of the first pressure detecting element and the fourth pressure detecting element; When the pressure value of the first pressure detecting element is equal to the pressure value of the fourth pressure detecting element, the second pressure reducing valve is controlled to stop pressure reduction.

8. The testing device according to claim 2, characterized in that: The testing device further includes a pressure switch testing element, which is connected to the pressure switch and is also in communication with the controller; the valve group further includes a third air intake valve, which is provided on the third pipeline; The controller, when performing pressure switch testing, is specifically used to: Controlling the first intake valve, the second intake valve, the third intake valve and the second exhaust valve to open; When the state of the pressure switch is switched, obtaining the pressure value of the pressure switch test element; When the pressure value of the pressure switch test element is at a first preset pressure threshold, it is determined that the pressure switch test is qualified.

9. The testing device according to claim 8, characterized in that The valve group further includes a third switch valve and a third pressure reducing valve, wherein the third switch valve is arranged on the pipeline between the external air source and the third air inlet valve, and the third pressure reducing valve is arranged on the pipeline between the external air source and the third switch valve; the pressure detection assembly further includes a fifth pressure detection element and a sixth pressure detection element, wherein the fifth pressure detection element is used to detect the gas pressure value of the pipeline between the third pressure reducing valve and the third switch valve; and the sixth pressure detection element is used to detect the gas pressure value of the pipeline between the third air inlet valve and the test interface; The controller, when performing pressure switch testing, is also used to: controlling the third pressure reducing valve to reduce pressure, and obtaining pressure values ​​of the fifth pressure detecting element and the sixth pressure detecting element; When the pressure value of the fifth pressure detecting element is equal to the pressure value of the sixth pressure detecting element, the third pressure reducing valve is controlled to stop reducing pressure.

10. A method for testing a tread cleaning control module, characterized in that: include: Upon receiving a test instruction, the multiple control valves are selectively opened or closed according to the test instruction to perform a target test; wherein the target test is any one of an air tightness test, a first pressure reducing valve pressure test, a charging and exhaust time test, a pressure switch test, a shut-off valve test, and a solenoid valve response time test; Target detection data of a plurality of pressure detection elements are acquired, and the target detection data are compared with a preset detection threshold value to determine whether the target test is qualified.

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