CN113295442B - Reliability test equipment and reliability test method for brake component - Google Patents
Reliability test equipment and reliability test method for brake component Download PDFInfo
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- CN113295442B CN113295442B CN202110573406.9A CN202110573406A CN113295442B CN 113295442 B CN113295442 B CN 113295442B CN 202110573406 A CN202110573406 A CN 202110573406A CN 113295442 B CN113295442 B CN 113295442B
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01M—TESTING STATIC OR DYNAMIC BALANCE OF MACHINES OR STRUCTURES; TESTING OF STRUCTURES OR APPARATUS, NOT OTHERWISE PROVIDED FOR
- G01M17/00—Testing of vehicles
- G01M17/08—Railway vehicles
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01M—TESTING STATIC OR DYNAMIC BALANCE OF MACHINES OR STRUCTURES; TESTING OF STRUCTURES OR APPARATUS, NOT OTHERWISE PROVIDED FOR
- G01M7/00—Vibration-testing of structures; Shock-testing of structures
- G01M7/02—Vibration-testing by means of a shake table
- G01M7/022—Vibration control arrangements, e.g. for generating random vibrations
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Abstract
The invention relates to a reliability test device and a reliability test method for a brake component, wherein the reliability test device comprises a brake control device and a vibration device; the vibration device comprises a vibration controller and a test bed, the brake component can be fixed on the test bed, and the vibration controller can control the test bed to apply vibration to the brake component according to a preset vibration state so as to enable the brake component to reach the preset vibration state; the brake control device comprises a brake controller and a brake testing mechanism, the brake testing mechanism comprises a plurality of testing units, the testing units can be connected through hoses, the brake controller can control the brake testing mechanism to enter a brake state, and whether the performance of the brake testing mechanism is qualified or not is judged according to the brake state information of the brake component. The vibration working condition of the brake component in the real working state can be combined for testing, so that the working reliability of the brake component in the application environment is ensured, the research and development of products are assisted, and the service life of the research and development products is ensured.
Description
Technical Field
The invention relates to the technical field of experimental equipment, in particular to reliability testing equipment and a reliability testing method for a brake component.
Background
When the railway vehicle is in a vibration state in the running process, the vehicle brake component inevitably vibrates, and the reliability of the brake component is particularly important when the railway vehicle works in the application environment for a long time. Therefore, in order to ensure the service life of the brake component, the evaluation of the influence of the application environment on the service life of the brake component is an indispensable link in the development process of the brake component.
At present, the brake component is generally tested in the forms of conventional performance, high and low temperature, static durability and the like in the development process, but the reliability test of the brake component in a vibration state is lacked.
How to test the reliability of the brake component is to combine the vibration condition of the brake component in the real working state to ensure the reliability of the brake component in the working environment, assist the research and development of products and ensure the service life of the research and development products, which is a technical problem to be solved by technical personnel in the field.
Disclosure of Invention
The invention aims to provide a reliability testing device and a reliability testing method for a brake component, which can be combined with the vibration working condition of the brake component in a real working state to ensure the working performance of the brake component in an application environment, assist the research and development of products and ensure the service life of the research and development products.
In order to solve the technical problem, the invention provides a reliability testing device of a brake component, which comprises a brake control device and a vibration device; the vibration device comprises a vibration controller and a test bed, a brake component to be tested can be fixed on the test bed, and the vibration controller can control the test bed to apply vibration to the brake component according to a preset vibration state so as to enable the brake component to reach the preset vibration state; the brake control device comprises a brake controller and a brake testing mechanism, wherein the brake testing mechanism comprises a plurality of testing units which respectively correspond to all parts of a brake system, the testing units can be connected through hoses, the brake part can be connected to the brake testing mechanism, the brake controller can control the brake testing mechanism to enter a brake state, and whether the reliability of the brake testing mechanism is qualified or not is judged according to the brake state information of the brake part.
The vibration device can simulate the actual application state of the brake component to be tested to enable the brake component to vibrate in the test process, the brake control device can test the reliability of the brake component in a preset vibration state, whether the brake reliability of the brake component to be tested is qualified or not is judged according to the test result, the result tested by the reliability test equipment is the result of the vibration working condition of the brake component in the actual application state, the accuracy is higher, the brake component is tested in the product research and development stage by the vibration test device, the performance and the stability of the product are guaranteed, and the service life of the product is further guaranteed.
Optionally, the vibration device further comprises a first acceleration detection unit arranged on the brake component, the vibration controller is connected with the first acceleration detection unit and monitors vibration information of the brake component in real time according to the first acceleration detection unit, the vibration controller can control the test bench according to the vibration information of the brake component and the preset vibration state, and the test bench adjusts the vibration applied to the brake component until the vibration information meets the preset vibration state.
Optionally, the vibration device further includes a fixing component and a second acceleration detection unit disposed on the fixing component, the fixing component is configured to fix the braking component on the test bed, the second acceleration detection unit is connected to the vibration controller, and the vibration controller is capable of acquiring vibration information of the fixing component through the second acceleration detection unit.
Optionally, the brake control mechanism includes a control pipeline and a plurality of test portions, each of the test portions is connected in parallel and is respectively communicated with the control pipeline, and an on-off valve is respectively arranged between each of the test portions and the control pipeline; at least one test unit is integrated in each test part.
Optionally, at least part of the test units are positioned to form a test position of the corresponding brake component, and the brake component can be mounted at the test position corresponding to the brake component.
Optionally, the control pipeline is further provided with a test interface, the test part further comprises a fifth on-off valve provided at the test interface, and the brake component can be connected with the test interface.
Optionally, the test portion includes the control valve module, the test unit of control valve module includes the control valve, alleviates reservoir and vice reservoir with higher speed, the control valve with control piping connection is equipped with first break-make valve, alleviate reservoir with higher speed with vice reservoir respectively with the control valve passes through the hose connection.
Optionally, the test part further comprises a brake cylinder module, a test unit of the brake cylinder module comprises a brake cylinder, and the brake cylinder is connected with the control pipeline and provided with a second cut-off valve; and the brake cylinder and the control valve are connected through a hose and provided with a fourth shutoff valve.
Optionally, the test part further comprises a dry-load vehicle module, a test unit of the dry-load vehicle module comprises a pressure limiting valve, a weight measuring mechanism and a pressure reduction air cylinder, and the pressure limiting valve is connected with the control pipeline and provided with a third cut-off valve.
The invention also provides a reliability testing method of the brake component, which comprises the following steps:
s1: applying vibration to the brake component to be tested to enable the brake component to be in accordance with a preset vibration state;
s2: carrying out braking test on the braking component which accords with the preset vibration state, and monitoring first braking state information of the braking component in real time;
s3: and judging whether the first braking state information meets a first preset requirement, if the first braking state information does not meet the first preset requirement, replacing a new braking component after corresponding improvement and performing the step S1 again, and if the first braking state information meets the first preset requirement, determining that the braking performance of the braking component is qualified.
When the reliability test is carried out on the brake component to be tested, the brake component is in a vibration state under a simulated actual application state, the brake component is tested by the reliability test method of the brake component, and the performance test result is closer to the actual working condition, so that the research and development of brake products can be assisted, and the brake performance of the research and development products is ensured.
Optionally, step S4 is further included after step S3: and repeating the steps S1-S3 for a preset number of times, detecting second braking state information of the braking component after the first braking state information meets the first preset requirement, judging whether the second braking state information meets the second preset requirement, if the second braking state information does not meet the second preset requirement, replacing a new braking component after corresponding improvement, and repeating the step S1, and if the second braking state information meets the second preset requirement, the stability of the braking component is qualified.
Optionally, the braking component is provided with a first acceleration detection unit, the first acceleration detection unit is used for detecting vibration information of the braking component, and the vibration device can adjust the vibration condition of the braking component in real time according to the preset vibration state and the vibration information, so that the vibration information conforms to the preset vibration state.
Optionally, the preset vibration state is an actually measured working condition or a standard working condition.
Drawings
Fig. 1 to 4 are schematic structural views of a reliability testing apparatus for a brake member provided in an embodiment of the present invention;
FIG. 5 is a schematic view of the brake test mechanism;
FIG. 6 is a flow chart of a method of reliability testing of a brake component.
In the accompanying fig. 1-6, the reference numerals are illustrated as follows:
100-a brake control device, 110-a brake controller, 120-a brake testing mechanism;
1-a control pipeline, 11-a test interface, 12-a switch valve and 13-a connection inlet;
21-a second on-off valve, 22-a first on-off valve, 23-a third on-off valve, 24-a fourth on-off valve, 25-a fifth on-off valve;
3-control valve module, 31-control valve, 32-accelerated release reservoir, 33-auxiliary reservoir;
4-brake cylinder module, 41-brake cylinder;
5-empty and heavy vehicle module, 51-pressure limiting valve, 52-weight measuring mechanism, 53-pressure reducing air cylinder;
200-a vibration device, 210-a vibration controller, 220-a test bench, 230-a fixed part and 240-a test tool;
300-a hose;
400-a braking component;
500-brake modulator.
Detailed Description
In order to make the technical solutions of the present invention better understood by those skilled in the art, the present invention will be further described in detail with reference to the accompanying drawings and specific embodiments.
The embodiment of the invention provides a reliability test device for a brake component, as shown in fig. 1-4, the reliability test device comprises a brake control device 100 and a vibration device 200, wherein the vibration device 200 can simulate the actual application state of the brake component 400 to be tested to enable the brake component 400 to be tested to generate vibration in the test process, the brake control device 100 can test the reliability (specifically including the brake performance and the long-term application stability) of the brake component 400 in a preset vibration state, and judge whether the brake reliability of the brake component 400 to be tested is qualified according to the test result, and the brake component 400 is tested by the vibration test device in the product development stage to ensure the reliability and the service life of a product.
Specifically, as shown in fig. 1 to 4, the vibration device 200 includes a vibration controller 210 and a test bench 220, wherein the brake component 400 to be tested can be fixed on the test bench 220, and the vibration controller 210 can control the test bench 220 to apply vibration to the brake component 400 according to a preset vibration state, so that the brake component 400 reaches the preset vibration state, and the application environment state of the brake component is reproduced. The preset vibration state is a vibration condition that may be generated by the brake component 400 to be tested in the actual operation state, specifically, the actual measurement working condition may be an actual measurement working condition, and the vibration device 200 simulates the vibration condition of the brake component 400 to be tested in the actual operation working condition according to the preset vibration state, so as to ensure that the test result of the brake control device 100 is accurate.
Specifically, the brake control device 100 includes a brake controller 110 and a brake testing mechanism 120, the brake testing mechanism 120 includes a plurality of testing units respectively corresponding to each component (brake component) of the brake system, each testing unit is connected in parallel and is respectively communicated with the control pipeline 1, the brake component 400 to be tested can be connected in the brake testing mechanism 120, the brake controller 110 can control the brake testing mechanism 120 to enter a brake state, and whether the reliability of the brake component 400 is qualified is judged according to the brake state information of the brake component.
That is, in the present embodiment, when the reliability of each brake member 400 to be tested is tested, the brake member 400 is fixed to the test bed 220 of the vibration device 200 and connected to the brake test mechanism 120 of the brake control device 100 through a hose. The performance and long-term operation stability result of the brake part 400 measured by the reliability test equipment are the result of combining the vibration working condition of the brake part 400 in the actual operation state, the accuracy is higher, and the reliability test equipment assists in research and development of products and ensures the service life of the research and development products.
In the above embodiment, the vibration device 200 further includes a first acceleration detection unit disposed on the brake component 400, the vibration controller 210 is connected to the first acceleration detection unit, and monitors the vibration information of the brake component 400 in real time through the first acceleration detection unit, the vibration controller 210 can control the test bed 220 to adjust the action on the brake component 400 through the vibration information of the brake component 400 and the preset vibration state, so as to adjust the vibration condition of the brake component 400 in real time, so that the vibration information detected by the first acceleration detection unit satisfies the preset vibration state, so as to form an adjustment closed loop, the vibration device 200 monitors and adjusts the vibration condition of the brake component 400 in real time, so as to make the vibration condition of the brake component 400 satisfy the preset vibration state, so as to ensure that the brake component 400 performs a braking reliability test when the preset vibration state with a changed vibration condition, the accuracy of simulating the actual application state can be improved, and the accuracy of testing the braking reliability is further ensured.
Further, the vibration device 200 further includes a fixing component 230 and a second acceleration detecting unit, wherein the fixing component 230 is used for fixing the braking component 400 and the test bed 220, and the second acceleration detecting unit is connected to the fixing component 230 and is used for detecting the vibration information of the fixing component 230. The vibration controller 210 is connected to the second acceleration detecting unit, and monitors vibration information of the fixing part 230 in real time through the second acceleration detecting unit. The brake member 400 is fixed by the fixing member 230, and therefore, theoretically, the vibration information of the brake member 400 and the fixing member 230 should be consistent, that is, the vibration information of the fixing member 230 detected by the second acceleration detecting unit should be consistent with the vibration information of the brake member 400 detected by the first acceleration detecting unit, the vibration controller 210 can control the test bed 220 by any vibration information and the preset vibration state, and when two acceleration detecting units are provided to detect the vibration information of the brake member 400 and the fixing member 230 respectively, the vibration controller 210 can monitor whether an abnormality occurs according to the detection results of the two acceleration detecting units, and if the difference between the monitoring results of the two acceleration detecting units is large, the abnormality occurs, and the brake member can be stopped and checked in time, and the reliability of the detection result is ensured.
In the above embodiment, the brake control mechanism includes a brake pipeline and a plurality of test portions, wherein one end of the control pipeline 1 is provided with a connection inlet 13 and connected with the brake controller 110, each test portion is connected in parallel and respectively communicated with the control pipeline 1, and an on-off valve is respectively arranged between each test portion and the control pipeline 1; at least one of the test units is integrated in each test part. That is to say, each testing unit of the brake control mechanism is modularized, and the on-off valves are respectively arranged between each module and the control pipeline 1, so that each testing part can be rapidly switched and combined to meet the testing requirements of various brake components 400, and meanwhile, the performance testing mechanism can be more flexibly used due to the modularized arrangement.
Each test part is respectively communicated with the control pipeline 1 through an on-off valve, specifically, each on-off valve can be selectively opened and closed according to the connection position of the brake component 400 in the actual application, when the performance test is carried out on the brake component 400, the brake component 400 is connected to the corresponding test part according to the connection position of the brake component 400 in the actual application state, then the on-off valves of the test parts connected with the brake component 400 are opened (the on-off valves of the other test parts are kept in the closed state), at the moment, the connection state of the brake component 400 is the same as the connection state of the brake component under the actual application working condition, and then the brake controller 110 can carry out the brake reliability test on the brake component 400 through the control pipeline 1.
Specifically, how the brake controller 110 performs the braking operation on each test unit through the control circuit 1 and determines whether the test unit is qualified according to the detection result of the brake component 400 is well known in the art, and will not be described herein for brevity.
In the above embodiment, there is no limitation on how the braking member 400 is connected to the testing portion, and in the present embodiment, the following two connection methods are provided:
the first connection mode is as follows: at least part of the test units can form test positions of the corresponding brake parts 400, the brake parts 400 can be arranged at the test positions corresponding to the test units, and when the brake parts 400 need to be subjected to brake reliability test, the brake parts 400 can be arranged at the corresponding test positions to be subjected to brake reliability test;
the second connection mode is as follows: the test part further comprises a test interface 11 arranged on the brake pipeline, the test interface 11 is further provided with a fifth on-off valve 25, namely, the test interface 11 is connected with the test parts in parallel, the test interface 11 is provided with the fifth on-off valve 25, and the brake component 400 to be tested can be connected with the test interface 11 to realize the brake reliability test.
That is, if there is a corresponding test unit for the same brake component 400, it may be connected to the test interface 11 to implement the brake performance test, or may be installed in a corresponding test location to perform the brake performance test, and the test interface 11 may be provided to reduce the number of test units and the number of test units, thereby simplifying the overall structure of the performance test mechanism.
When the brake parts are the brake cylinder 41, the derailing valve, the air reservoir and the like, the brake parts can be connected to the test interface 11, the on-off valves are closed, and the brake controller can perform reliability test on the brake parts through the control pipeline 1.
In the above embodiment, the testing part includes the control valve module 3, the testing unit of the control valve module 3 includes the control valve 31, the accelerated release reservoir 32, the auxiliary reservoir 33, and the like, the control valve 31 is connected to the control pipeline 1 with the first on-off valve 22 disposed therebetween, and the accelerated release reservoir 32 and the auxiliary reservoir 33 are respectively connected to corresponding interfaces of the control valve 31 through the hoses 300 for storing the pressure air during the operation. When the brake performance of the brake components 400 such as the brake cylinder 41, the derailing valve, and the reservoir is tested, the reliability of each of the brake components 400 may be tested by connecting the brake component 400 to the test interface 11 and opening the first on-off valve 22 through the control valve module 3.
Further, the test part further comprises a brake cylinder module 4, the test unit of the brake cylinder module 4 comprises a brake cylinder 41, the brake cylinder 41 is connected with the control line 1 and is provided with a second on-off valve 21, and the brake cylinder 41 is connected with the control valve 31 and is provided with a fourth on-off valve 24. The brake cylinders 41 can be selectively supplied with the pressure air from the control line 1 and the control valve module 3, and operated accordingly to perform a reliability test.
When the brake component 400 to be tested is the control valve 31, as shown in fig. 1, the control valve 31 in the control valve module 3 is the brake component 400 to be tested, and after the control valve 31 is fixed on the test bed 220, the auxiliary reservoir 33, the acceleration relief reservoir 32, the reservoir of the brake cylinder 41, and the like are connected by a hose 300, and is connected with the corresponding interface of the control valve 31, the first on-off valve 22 and the fourth on-off valve 24 are opened, the rest on-off valves and the fifth on-off valve 25 are closed, the control valve module 3 is communicated with the control pipeline 1, in the test process, the brake controller 110 is connected to the corresponding interface of the control valve 31 via the control line 1, and controls the air pressure change in the control pipeline 1 to make the control valve 31 realize the actions of various working conditions, makes the pressure air flow among the auxiliary reservoir 33, the accelerated release reservoir 32 and the brake cylinder module 4, the braking state information of the control valve 31 is collected through a sensor and whether the reliability of the control valve 31 is qualified or not is judged.
When testing the brake cylinder 41, the brake cylinder 41 to be tested may be connected to the brake cylinder module 4, the second on-off valve 21 may be opened, and the remaining on-off valves and the fifth on-off valve 25 may be closed, or the brake cylinder 41 to be tested may be connected to the test interface 11, the fifth on-off valve 25 may be opened, and each on-off valve may be closed, and the brake controller 110 may implement a performance test on the brake cylinder 41 by controlling the pipeline 1. Specifically, as shown in fig. 2, the brake cylinder 41 to be tested is fixed on a test bed 220, meanwhile, a test fixture 240 is fixed on the test bed 220 together, the test fixture 240 can limit the extension displacement of the piston rod of the brake cylinder 41, so that the brake cylinder 41 is consistent with the installation position in the operating state, the brake controller 110 controls the brake pressure output through the control pipeline 1, the brake cylinder 41 is charged, the piston rod of the brake cylinder 41 is pushed out to convert the air pressure into the thrust, the piston rod stroke is adjusted as required through the test fixture 240, and the reliability of the brake cylinder 41 is evaluated through data collected by a sensor.
In the above embodiment, the testing part further includes the empty and heavy vehicle module 5, the testing unit of the empty and heavy vehicle module 5 includes the pressure limiting valve 51, the weight measuring mechanism 52 and the pressure reducing air cylinder 53, the pressure limiting valve 51 is connected with the control pipeline 1 and is provided with the third cut-off valve 23. When the brake component 400 to be tested is the pressure limiting valve 51 and the side weight mechanism, as shown in fig. 3, the pressure limiting valve 51 and the side weight mechanism are fixed on the test bed 220 through the fixing component 230, the installation positions of the pressure limiting valve 51 and the side weight mechanism are consistent with the installation positions of the application state, the second cut-off valve 21 and the third cut-off valve 23 are opened, the weight measuring mechanism 52, the pressure limiting valve 51, the air storage cylinder of the brake cylinder 41 and the like are connected through the hose 300, the brake controller 110 is connected with the brake pressure output pipeline of the control valve 31 through the control pipeline 1, brake pressure output is controlled, a device for stepless adjusting the state of the weight measuring mechanism 52 is arranged on the test tool 240, the control valve 31 is enabled to realize the actions of various working conditions, and data are collected through the sensor to evaluate the reliability of the pressure limiting valve 51 and the weight measuring mechanism 52.
Taking the brake component 400 as the brake adjuster 500 as an example, as shown in fig. 4, the test fixture 240 on the test bed 220 is provided with a front brake lever (shortened in proportion) and a corresponding support, and the screw head end of the brake adjuster 500 is provided with a limiting and clearance adjusting mechanism, which are designed into a whole, and the brake adjuster 500 is installed on the test bed 220 and connected with the test interface 11; the brake cylinder 41 is arranged on a fixed base on the ground and provides braking thrust for the action of the brake adjuster 500 through chain connection; a brake pressure output pipeline of the control valve 31 and the like are installed on the matched test bed 220 and are correspondingly connected with the brake cylinder 41 through a hose 300. The brake controller 110 controls brake pressure output through the control pipeline 1, the brake cylinder 41 is charged, the brake cylinder 41 converts air pressure into thrust, the thrust is transmitted to a brake lever on the test bed 220 through flexible chain connection, the brake adjuster 500 is actuated, and reliability of the brake adjuster 500 is evaluated through measuring the stroke of the brake cylinder 41 and the screw length of the brake adjuster 500.
In the above embodiment, the control pipeline 1 is further provided with a switch valve 12 at one end facing the brake controller 110, and when the system is in the preparation stage, the switch valve 12 can be closed, so that after the preparation stage is completed, the switch valve 12 can be opened.
In the above embodiment, the first on-off valve 22, the second on-off valve 21, the third on-off valve 23, and the fourth on-off valve 24 are all ball valves, but of course, the on-off valves are not limited, and may be provided as electromagnetic valves, and the on-off valves may be the same or different. Meanwhile, the structures of the fifth on-off valve 25 and the on-off valve 12 are not limited, and they may be the same kind of valve member or different.
The embodiment of the invention also provides a reliability test method of the brake component, which comprises the following steps:
s1: applying vibration to the brake part 400 to be tested to make it conform to a preset vibration state;
s2: the braking test is performed on the braking part 400 conforming to the preset vibration state, and the first braking state information of the braking part 400 is monitored in real time.
The preset vibration state refers to a vibration condition which is possibly generated by the brake component 400 in an actual application state, the brake component 400 to be tested is simulated to be in a real application state, and then the brake reliability test is carried out, so that the vibration reliability test result is a result of combining the vibration working condition in the actual application state, and the accuracy of the test result is ensured.
S3: and judging whether the first braking state information meets a first preset requirement, if the first braking state information does not meet the first preset requirement, replacing the new braking component 400 after corresponding improvement, and performing step S1 again, and if the first braking state information meets the first preset requirement, judging that the braking performance of the braking component 400 is qualified.
The performance of the brake component 400 is judged in real time according to the first brake state information of the brake component 400, the first preset requirement refers to a brake performance index of the brake component 400 in a normal working state, if the first brake state information does not meet the first preset requirement, the brake performance of the brake component 400 is unqualified, the brake component 400 is correspondingly improved, the step S1 is carried out again after a new brake component 400 is replaced, and if the first brake state information meets the first preset requirement, the brake performance of the brake component 400 is qualified.
That is to say, in this embodiment, when the performance of the braking component 400 to be tested is tested, the vibration device 200 may simulate the real application scene of the braking component 400 to be tested according to the preset vibration state, and perform the performance test on the braking component 400 by combining the vibration condition of the braking component 400 in the actual application state, so as to ensure the working performance of the braking component 400 in the application environment, assist the research and development of the braking product, and ensure the braking performance of the research and development product.
Specifically, the steps of the present invention will be described in detail in conjunction with the performance testing system of the brake member 400. The method includes the steps of mounting a brake component 400 to be tested on a test bed 220 of a vibration device 200, fixing the brake component 400 and the test bed 220 through a fixing component 230, and then connecting the brake component 400 and a corresponding test unit through a hose 300, wherein in step S1, a vibration controller 210 of the vibration device 200 controls the test bed 220 to apply vibration to the brake component 400 according to a preset vibration state, so that the vibration condition of the brake component 400 is in accordance with the preset vibration state, and the application environment condition of the brake component is reproduced. In step S2, the brake control device 100 controls the brake member 400 to enter the braking state, and monitors the first braking state information of the brake member 400 in real time. In step S3, the brake control device 100 determines whether the performance of the brake component 400 is qualified according to the first brake state information and the first preset requirement, if so, it indicates that the performance of the developed product is up to standard, and if not, it indicates that the performance of the developed product is not up to standard, and it needs to perform corresponding improvement and retest.
In the above embodiment, as shown in fig. 6, step S4 is further included after step S3: and repeating the steps S1-S3 for a preset number of times, wherein the first braking state information does not exceed the first preset requirement, detecting second braking state information of the braking component 400, judging whether the second braking state information meets the second preset requirement, if the second braking state information does not meet the second preset requirement, replacing the new braking component 400 after corresponding improvement, and performing the step S1 again, and if the second braking state information meets the second preset requirement, the stability of the braking component 400 is qualified.
Step S4 is to test the stability of the brake component 400, specifically, steps S1-S3 refer to a test cycle of the brake component 400, and according to the requirement of the service life of the brake component 400, a preset number of cycle tests are required, and in the process of repeating steps S1-S3 to the preset number of times, the first braking state information always meets the first preset requirement, which indicates that the performance of the brake component 400 is qualified in a single test cycle, and after the preset number of test cycles, the second braking state information of the brake component 400 still meets the second preset requirement, and the stability of the brake component 400 is qualified. Specifically, the first braking state information and the second braking state information may be partially the same, completely the same, or completely different, and are not limited herein.
That is to say, the reliability test method provided by the embodiment can test the braking performance and stability of the braking component under the condition of simulating the actual application condition, so that the accuracy of the test result is ensured, the research and development of the product can be assisted, and the braking performance and the service life of the product are ensured.
In the above embodiment, the brake part 400 is provided with the first acceleration detection unit for monitoring the vibration information of the brake part 400 in real time, the vibration device 200 can adjust the vibration condition of the brake part 400 in real time according to the preset vibration state and the detection result of the first acceleration detection unit, so that the vibration information detected by the first acceleration detection unit satisfies a preset vibration state, thus, a closed regulation loop can be formed, the vibration device 200 monitors and regulates the vibration condition of the brake component 400 in real time, so that the vibration condition of the brake member 400 is in accordance with a preset vibration state, and thus, for the preset vibration state with the changed vibration condition, the brake component can be ensured to be in a brake reliability test, the accuracy of simulating the actual application state can be improved, and the accuracy of testing the braking reliability is further ensured.
In detail, predetermine the vibration state and be actual measurement operating mode or standard operating mode, it is specific, the actual measurement operating mode is for carrying out the actual measurement time domain acceleration rate spectrum that obtains in the position that corresponds with braking part 400, standard operating mode can set up to standard ASD energy spectrum etc., will predetermine vibration state input vibrating device 200, vibrating device 200 will predetermine the vibration state and turn into control command, and control test bench 220 acts on braking part 400 vibration, so that braking part 400's vibration condition accords with and predetermines the vibration state, thereby make it be in the simulation and use the operating mode when detecting braking part 400. Specifically, how to convert the preset vibration state into the control command by the vibration controller 210, and according to the control command, the test bed 220 is controlled to vibrate the brake component 400 through a mode such as three-axis co-vibration, so that the vibration condition of the brake component 400 conforms to the preset vibration state.
The foregoing is only a preferred embodiment of the present invention, and it should be noted that it is obvious to those skilled in the art that various modifications and improvements can be made without departing from the principle of the present invention, and these modifications and improvements should also be considered as the protection scope of the present invention.
Claims (10)
1. A reliability test device of a brake component, characterized by comprising a brake control means (100) and a vibration means (200);
the vibration device (200) comprises a vibration controller (210) and a test bed (220), a brake component (400) to be tested can be fixed on the test bed (220), and the vibration controller (210) can control the test bed (220) to apply vibration to the brake component (400) according to a preset vibration state so that the brake component (400) reaches the preset vibration state;
the brake control device (100) comprises a brake controller (110) and a brake testing mechanism (120), wherein the brake testing mechanism (120) comprises a plurality of testing units which respectively correspond to all parts of a brake system, all the testing units can be connected through hoses (300), the brake part (400) can be connected to the brake testing mechanism (120), the brake controller (110) can control the brake testing mechanism (120) to enter a brake state, and whether the reliability of the brake testing mechanism (120) is qualified or not is judged according to the brake state information of the brake part (400);
the vibration device (200) further comprises a first acceleration detection unit arranged on the brake component (400), the vibration controller (210) is connected with the first acceleration detection unit and monitors vibration information of the brake component (400) in real time according to the first acceleration detection unit, the vibration controller (210) can control the test bed according to the vibration information of the brake component (400) and the preset vibration state, and adjust the vibration applied to the brake component (400) by the test bed (220) until the vibration information meets the preset vibration state;
the vibration device (200) further comprises a fixing component (230) and a second acceleration detection unit arranged on the fixing component (230), wherein the fixing component (230) is used for fixing the brake component (400) on the test bed (220), the second acceleration detection unit is connected with the vibration controller (210), and the vibration controller (210) can acquire vibration information of the fixing component (230) through the second acceleration detection unit;
the vibration controller (210) can detect whether an abnormality occurs according to the detection results of the two acceleration detection units, and if the difference between the monitoring results of the two acceleration detection units is large, the abnormality is indicated, and the vibration controller stops and checks.
2. The reliability test device of the brake component according to claim 1, wherein the brake test mechanism (120) comprises a control pipeline (1) and a plurality of test parts, each of the test parts is connected in parallel and is respectively communicated with the control pipeline (1), and an on-off valve is respectively arranged between each of the test parts and the control pipeline (1);
at least one test unit is integrated in each test part.
3. The reliability testing apparatus of a brake member according to claim 2, wherein at least a portion of the testing units are positioned to form a testing site of a brake member (400) corresponding thereto, the brake member (400) being mountable to the testing site corresponding thereto.
4. The reliability testing device of the brake component according to claim 3, characterized in that the testing portion further comprises a testing interface (11) opened to the control circuit (1), and the testing interface (11) is further provided with a fifth on-off valve (25), the brake component (400) being connectable with the testing interface (11).
5. The reliability testing device of the brake component according to claim 2, characterized in that the testing portion comprises a control valve module (3), a testing unit of the control valve module (3) comprises a control valve (31), an accelerated release reservoir (32) and an auxiliary reservoir (33), the control valve (31) is connected with the control pipeline (1) and is provided with a first on-off valve (22), and the accelerated release reservoir (32) and the auxiliary reservoir (33) are respectively connected with the control valve (31) through hoses (300).
6. The reliability testing device of brake components according to claim 5, characterized in that the testing portion further comprises a brake cylinder module (4), the testing unit of the brake cylinder module (4) comprising a brake cylinder (41), the brake cylinder (41) being connected with the control line (1) and being provided with a second shut-off valve (21);
the brake cylinder (41) and the control valve (31) are connected through a hose (300) and are provided with a fourth shut-off valve (24).
7. The reliability testing device of the braking component according to claim 6, characterized in that the testing portion further comprises a dry-load module (5), the testing unit of the dry-load module (5) comprises a pressure limiting valve (51), a weight measuring mechanism (52) and a pressure reducing air cylinder (53), the pressure limiting valve (51) is connected with the control pipeline (1) and is provided with a third cut-off valve (23).
8. A method for testing the reliability of a brake component based on a device for testing the reliability of a brake component according to any one of claims 1 to 7, characterized by comprising the steps of:
s1: applying vibration to the brake component to be tested to enable the brake component to be in accordance with a preset vibration state;
s2: carrying out braking test on the braking component which accords with the preset vibration state, and monitoring first braking state information of the braking component in real time;
s3: and judging whether the first braking state information meets a first preset requirement, if the first braking state information does not meet the first preset requirement, replacing a new braking component after corresponding improvement and performing the step S1 again, and if the first braking state information meets the first preset requirement, determining that the braking performance of the braking component is qualified.
9. The method for testing the reliability of a brake component according to claim 8, further comprising, after the step S3, a step S4:
and repeating the steps S1-S3 for a preset number of times, judging whether the first braking state information meets the first preset requirement, detecting second braking state information of the braking component, judging whether the second braking state information meets the second preset requirement, if the second braking state information does not meet the second preset requirement, replacing a new braking component after corresponding improvement, and repeating the steps S1-S3, and if the second braking state information meets the second preset requirement, judging that the stability of the braking component is qualified.
10. The method for testing the reliability of a brake component according to claim 8, wherein the predetermined vibration state is a measured operating condition or a standard operating condition.
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