Test apparatus and methods for automatic coupler function testing

Abstract

This application provides a testing apparatus and method for automatic coupler function testing. The testing apparatus includes a test bench, an air compressor, a main switch, a main air duct, and a piping assembly. The air inlet of the main air duct is connected to the air outlet of the air compressor. The main switch is closable on the main air duct. The air inlet of the piping assembly is connected to the air outlet of the main air duct. The piping assembly includes at least two parallel air supply ducts. Each air supply duct includes a branch duct and a switch valve. The switch valve is closable between the air inlet of the air supply duct and the air inlet of the corresponding branch duct. The air outlet of the branch duct is connected to the coupler valve assembly of the automatic coupler under test. This application solves the problem of manual operation in existing automatic coupler function tests where the connection between the air duct and the coupler valve assembly relies on manual handling, reducing safety hazards, simplifying the testing procedure, and improving testing efficiency.

Description

Technical Field

[0001] This application relates to the field of automatic coupler testing technology, and in particular to a testing device and method for testing the function of automatic couplers. Background Technology

[0002] Automatic couplers are an important component of high-speed trains, responsible for mechanical connection, air circuit connection, and electrical signal transmission between vehicles. During advanced maintenance of high-speed trains, automatic couplers need to undergo multiple functional tests, including airtightness tests, alignment function tests, and automatic coupler coupling and uncoupling tests.

[0003] However, traditional testing methods rely on manual operation. During the test, the connection between the air duct and the coupler valve group needs to be manually supported to prevent air leakage. This poses a risk of high-pressure air leakage and personal injury caused by the swinging and impact of the coupler. In addition, the air duct needs to be repeatedly disassembled and reconnected for each test, which is inefficient. Summary of the Invention

[0004] In view of the above problems, this application provides a testing device and method for automatic coupler function testing, which can solve the problems of personal injury and low efficiency caused by manual support of the air pipe during testing, high-pressure air leakage, coupler swinging and impact.

[0005] To achieve the above objectives, the embodiments of this application provide the following technical solutions:

[0006] On the one hand, this application provides a testing device for testing the function of an automatic coupler, including: a test stand configured to carry the automatic coupler to be tested;

[0007] Air compressor;

[0008] The main air duct is connected to the air outlet of the air compressor.

[0009] A main switch is installed on the main air duct to control the on / off state of the main air duct;

[0010] The piping assembly has an air inlet end connected to the air outlet end of the main air duct. The piping assembly includes at least two parallel air supply pipes. Each air supply pipe includes a branch duct and a switching valve. The switching valve is closably disposed between the air inlet end of the air supply pipe and the air inlet end of the corresponding branch duct. The air outlet end of the branch duct is connected to the coupler valve group of the automatic coupler to be tested, so that the compressed air generated by the air compressor can be selectively delivered to the corresponding cylinder of the automatic coupler to be tested via each air supply pipe.

[0011] In one possible implementation, the piping assembly includes three air supply ducts, at least one of which includes two parallel branch ducts.

[0012] In one possible implementation, the air outlet of each of the branch ducts is detachably connected to the corresponding coupler valve assembly.

[0013] In one possible implementation, the air outlet of each of the branch ducts is threadedly connected to the corresponding coupler valve assembly.

[0014] In one possible implementation, the testing device further includes an exhaust valve disposed on the main air duct for driving the air in the main air duct to be discharged.

[0015] In one possible implementation, the exhaust valve is also equipped with a silencer.

[0016] In one possible implementation, the testing device further includes a pressure gauge connected to the main duct for detecting the air pressure inside the main duct.

[0017] On the other hand, this application provides a test method for an automatic coupler function test, including:

[0018] Start the air compressor and run it at a first preset pressure for a first preset duration;

[0019] After the air compressor has run for a first preset time under the first preset pressure, the main switch on the main air duct is turned on, and the switch valve of at least one of the at least two parallel air supply ducts is turned on, so that the air pressure in the main air duct is maintained at a level greater than the second preset pressure.

[0020] Turn off the main switch and maintain pressure on the main air duct and the corresponding open air supply line for a second preset duration.

[0021] After the pressure holding period is completed, the pressure drop of the air pressure in the main air duct is obtained;

[0022] If the pressure drop in the main air duct is greater than a preset threshold, the air tightness of the automatic coupler to be tested corresponding to the opened air supply duct is determined to be unqualified.

[0023] Furthermore, this application provides a test method for the functional testing of automatic couplers, comprising:

[0024] Start the air compressor and run it at a first preset pressure for a first preset duration;

[0025] The automatic coupler to be tested is offset by a preset angle relative to its initial installation position along a preset direction;

[0026] Open the main switch on the main air duct and open the switch valve of at least one of the at least two parallel air supply ducts to maintain the air pressure in the main air duct at a level greater than the second preset pressure.

[0027] After the operation under the second preset pressure is completed, the current position of the automatic coupler is detected;

[0028] If the current position of the automatic coupler is consistent with the initial installation position, then the automatic coupler's automatic alignment function is deemed to be qualified.

[0029] Furthermore, this application provides a test method for the functional testing of automatic couplers, comprising:

[0030] Start the air compressor and run it at a first preset pressure for a first preset duration;

[0031] After the automatic vehicle coupler to be tested is hooked into place with the test bench, the main switch on the main air duct is turned on, and the switch valve of at least one of the at least two parallel air supply ducts is turned on, so that the air pressure in the main air duct is maintained at a level greater than the second preset pressure.

[0032] If the automatic coupler is in the extended and locked state after operation, the automatic coupling function of the automatic coupler is deemed to be qualified.

[0033] Close the switch valve in the air supply pipeline that has been opened, and open the remaining switch valves in the air supply pipeline that have not been opened;

[0034] If the automatic coupler is in a retracted and disengaged state after operation, then the automatic uncoupling function of the automatic coupler is deemed to be qualified.

[0035] The testing device for automatic coupler function testing provided in this application uses an air compressor as a high-pressure air source. The input end of the main air duct is connected to the air compressor, and the output end is connected to the input end of the parallel air supply ducts. The air supply ducts also include switching valves and branch air ducts connected to the coupler valve group. Through the cooperation of the main switch and each switching valve, the compressed air generated by the air compressor can be selectively delivered to the corresponding cylinder of the automatic coupler to be tested through each of the air supply ducts. This realizes that multiple air supply ducts can work simultaneously or independently, solving the problem that the connection between the air duct and the coupler valve group in the prior art relies on manual operation, and reducing the risk of personal injury.

[0036] The test method for automatic coupler function testing provided in this application plans the steps of automatic coupler air tightness test, automatic coupler alignment function test, automatic coupling test, and automatic uncoupling test. For different test purposes, the on / off of each branch switch valve and each air supply pipeline can be controlled as needed, eliminating the need for repeated disassembly and reconnection of air supply pipelines, thus improving the efficiency of test operation and the accuracy of test results.

[0037] In addition to the technical problems solved by the embodiments of this application, the technical features constituting the technical solutions, and the beneficial effects brought about by the technical features of these technical solutions described above, other technical problems that can be solved by the testing device and method for automatic coupler function testing provided by the embodiments of this application, other technical features included in the technical solutions, and the beneficial effects brought about by these technical features will be further explained in detail in the specific implementation. Attached Figure Description

[0038] To more clearly illustrate the technical solutions in the embodiments of this application or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0039] Figure 1 This is a schematic diagram of the structure of an automatic coupler function testing device according to this application;

[0040] Figure 2 This is a schematic diagram of the working principle of an automatic coupler function testing device according to this application;

[0041] Figure 3 This is a flowchart of the airtightness test of an automatic coupler function test method in this application;

[0042] Figure 4 This is a flowchart of the alignment test for an automatic coupler function test method in this application;

[0043] Figure 5 This is a flowchart of the automatic coupling and uncoupling test of an automatic coupler function test method according to this application.

[0044] Figure label:

[0045] 1-Main switch; 11-Main air duct;

[0046] 2-First switch valve; 21-First air supply pipeline; 211-First coupler valve assembly;

[0047] 3-Second switching valve; 31-Second air supply duct; 311-First branch duct; 312-MRP valve; 322-Second branch duct; 323-BP valve;

[0048] 4-Third switch valve; 41-Third air supply line; 411-Unhooking cylinder;

[0049] 5-Exhaust valve;

[0050] 6-Air compressor;

[0051] 7-Wind pressure gauge. Detailed Implementation

[0052] To make the objectives, technical solutions, and advantages of the embodiments of this application clearer, the technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this application, not all embodiments. Based on the embodiments of this application, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this application. Unless otherwise specified, the following embodiments and features can be combined with each other.

[0053] In existing technologies, automatic coupler functional tests often rely on manual operation. During automatic coupler airtightness tests, coupling tests, and uncoupling tests, it is frequently necessary to manually hold the connection between the air duct and the automatic coupler valve assembly to maintain stable airflow, posing a safety hazard. Furthermore, during these tests, the air duct needs to be connected to different coupler valve assemblies, resulting in repeated disassembly and reassembly of the air duct. This cumbersome process leads to low efficiency, and the testing procedures often depend on manual experience, lacking standardized procedures.

[0054] To overcome the shortcomings of the prior art, this application aims to provide a testing device and method for automatic coupler function testing. By providing a testing device for automatic coupler function testing, the problem of relying on manual operation for connecting the air duct and coupler valve group in the existing test is solved, reducing safety hazards. Furthermore, a testing method for automatic coupler function testing is provided, which plans the steps of automatic coupler airtightness test, automatic coupler alignment test, automatic coupler coupling and uncoupling test, solving the problem of cumbersome testing procedures and low testing efficiency in the prior art.

[0055] The contents of this application will now be described in detail with reference to the accompanying drawings, so that those skilled in the art can have a clearer and more detailed understanding of the contents of this application.

[0056] The following sections provide a detailed description of the specific structure of a test device for an automatic coupler function test and various possible implementation methods.

[0057] Example 1 of a testing device for automatic coupler function testing provided in this application:

[0058] Please refer to Figure 1 , Figure 2 The system includes a test bench, an air compressor 6, a main air duct 11, a main switch 1, and piping assemblies. The test bench is used to install the automatic coupler to be tested and its corresponding components. The air compressor 6 serves as an external high-pressure air source, simulating the high-pressure air source provided by the train itself during normal operation of the automatic coupler. The air inlet of the main air duct 11 is connected to the air outlet of the air compressor 6. The main switch 1 is located between the air inlet of the main air duct 11 and the air outlet of the air compressor 6 to control the on / off state of the main air duct 11. The air inlet of the piping assembly is connected to the air outlet of the main air duct 11. The piping assembly includes at least two parallel air supply ducts. Each air supply duct includes a branch duct and a switch valve. The switch valve is located between the air inlet of the air supply duct and the air inlet of the corresponding branch duct to control the on / off state between the air supply duct and the branch duct. The air outlet of the branch duct is connected to the coupler valve group or uncoupling cylinder 411 of the automatic coupler to be tested.

[0059] When conducting automatic coupler function tests, the automatic coupler to be tested is first installed and fixed on the test bench. Then, the air compressor 6 is turned on for ventilation. According to the different test requirements, the switch valves on each air supply pipeline are opened respectively, so that the compressed air generated by the air compressor 6 can be delivered to the corresponding coupler valve group and cylinder of the automatic coupler to be tested through each air supply pipeline as needed, thereby causing the automatic coupler to move for automatic function testing.

[0060] Example 2 of a test device for testing the function of an automatic coupler: Refer to Figure 1 , Figure 2 As shown, the piping assembly includes three air supply pipes connected in parallel. The output end of the second air supply pipe 31 is also provided with two branch air pipes connected in parallel. The input ends of the three air supply pipes are respectively connected to the output end of the main pipe with switching valves, so as to determine the on / off state of each air supply pipe as needed. The input end of the first air supply pipe 21 is connected to the first switching valve 2, and the output end is connected to the first coupler valve group 211. The second air supply pipe 31 is connected to the second switching valve 3, and the output end is connected to the input end of the first branch air pipe 311 and the second branch pipe. The output ends of the first branch pipe and the second branch air pipe 322 are respectively connected to the MRP valve and the BP valve on the automatic coupler. The input end of the third air supply pipe 41 is connected to the third switching valve 4, and the output end is connected to the uncoupling cylinder 411.

[0061] Among them, the unhooking cylinder 411 is used to control the unhooking movement of the automatic coupler, and the MRP valve and BP valve are connected to the electric coupler telescopic cylinder.

[0062] To address the safety hazards arising from the reliance on manual support of the connection between the air duct and the automatic coupler valve assembly in traditional automatic coupler function testing, an embodiment 3 of a testing device for automatic coupler function testing is provided, based on the above embodiments: Please refer to... Figure 1 The air outlet of each branch duct is detachably connected to the corresponding coupler valve group. The connection between the traditional manually supported duct and the coupler valve group is changed to a mechanical connection, which improves the connection stability of the testing device and reduces the risk of personal injury.

[0063] Based on the above embodiments, here is an embodiment 4 of a testing device for an automatic coupler function test: Please refer to... Figure 1 The outlet of each branch duct is threaded to the corresponding coupler valve assembly. This ensures both the stability of the connection between the branch duct and the corresponding coupler valve assembly and economic efficiency, resulting in lower costs. Alternatively, the outlet of each branch duct can be quick-connected to the corresponding coupler valve assembly.

[0064] After the test, the air compressor 6 is turned off to stop the air supply. If there is high-pressure air residue in the air duct, it will affect the accuracy of the next test, and there is also a safety hazard to the operator when connecting a new coupler valve group. To solve this problem, based on the above embodiments, an embodiment 5 of an automatic coupler function test device is provided: Please refer to Figure 1 , Figure 2 An exhaust valve 5 is also installed between the main air duct 11 and the air pressure gauge 7. After the test, the residual high-pressure air is automatically discharged through the exhaust valve 5, thereby improving the safety of the test device and the accuracy of the test results.

[0065] In actual testing, the exhaust valve 5 produces a lot of noise when exhausting air. Based on the above embodiments, in embodiment 6 of an automatic coupler function test device, the exhaust valve 5 is also equipped with a silencer to reduce noise pollution and improve the test environment.

[0066] To accurately monitor the air pressure inside the duct, ensure that the test pressure meets the standard, and improve the accuracy of the test results, based on the above embodiments, an embodiment 7 of a test device for automatic coupler function testing is provided: Please refer to... Figure 1 , Figure 2 The testing device also includes a pressure gauge 7, which is installed on the main pipeline to measure the air pressure of the main pipeline. Through the pressure gauge 7, the air pressure in the pipeline can be monitored in a timely manner, thereby adjusting the power of the air compressor 6 as needed to achieve the required test pressure. After the test, the air pressure of the residual air volume in the pipeline can be monitored for easy discharge and to ensure the safety of the test.

[0067] In addition, this application also provides a test method for the functional testing of automatic couplers, used to test the airtightness of automatic couplers. Please refer to [reference needed]. Figure 1 , Figure 2 , Figure 3 Example 1 of a test method for an automatic coupler function test corresponds to Example 1 of a test device for an automatic coupler function test mentioned above. The steps include:

[0068] Step S10: Start the air compressor 6 and run it at the first preset pressure for the first preset duration.

[0069] Step S20: After the air compressor 6 has run for a first preset time under the first preset pressure, turn on the main switch 1 on the main air duct 11 and turn on the switch valve of at least one of the at least two parallel air supply ducts so that the air pressure in the main and branch pipes is maintained at a level greater than the second preset pressure.

[0070] Step S30: Turn off the main switch 1 and maintain pressure on the main air duct 11 and the corresponding opened air supply duct for a duration of the second preset duration.

[0071] Step S301: After the pressure holding is completed, observe the pressure drop in the main air duct 11 using the air pressure gauge 7;

[0072] Step S302: Compare the pressure drop with the preset threshold. If the pressure drop is greater than the preset threshold, the airtightness of the automatic coupler is determined to be unqualified.

[0073] The first preset duration is the ventilation duration to maintain stable air pressure in the pipeline, and the second preset duration is the pressure holding duration after ventilation stops.

[0074] Based on the above embodiments, here is an embodiment 2 of a test method for an automatic coupler function test, please refer to... Figure 1 , Figure 2 , Figure 3 The test method for the airtightness of the automatic coupler head includes the following steps:

[0075] Step S10: Connect the first air supply line 21 to the first coupler valve group 211, connect the third air supply line 41 to the uncoupling cylinder 411, connect the first branch air pipe 311 on the second air supply line 31 to the MRP valve, connect the second branch air pipe 322 to the BP valve, and turn on the air compressor 6.

[0076] Step S20: Run the air compressor 6 for 3 minutes to maintain the pressure inside the main air duct 11 above 1 MPa;

[0077] Step S30: Open the first switch valve 2 and observe the pressure gauge reading. The test pressure should be greater than 0.88 MPa. At this time, close the main switch 1 to disconnect the air source. Maintain the pressure for another 3 minutes without any external air source entering.

[0078] Step S301: Observe the reading of the pressure gauge 7 again and calculate the pressure drop difference before and after pressure holding;

[0079] In step S302, if the pressure drop is less than 20 kPa, the airtightness of the automatic coupler head is normal; if the pressure drop is greater than 20 kPa, use a spray bottle or a brush to apply soapy water to each connection point of the ventilation air passage to find the leak.

[0080] If the automatic coupler and testing device are airtight, the pressure drop is simply due to the increased volume in the pipeline caused by connecting the first coupler valve group 211 to the cylinder. In this case, the pressure drop will not be excessive. If the pressure drop exceeds 20 kPa, it indicates a gas leak and insufficient airtightness of the device. The leak can be identified by applying soapy water and observing the bubbling areas. Of course, the initial running time of the air compressor 6 can be 3 to 5 minutes, and the pressure holding time can also be 3 to 5 minutes; these details will not be elaborated further below.

[0081] Based on the above embodiments, here is an embodiment 3 of a test method for an automatic coupler function test, please refer to... Figure 1 , Figure 2 , Figure 3 The test method for the airtightness of the automatic coupler body includes the following steps:

[0082] Step S10: Connect the first air supply line 21 to the first coupler valve group 211, connect the third air supply line 41 to the uncoupling cylinder 411, connect the first branch air pipe 311 on the second air supply line 31 to the MRP valve, connect the second branch air pipe 322 to the BP valve, and turn on the air compressor 6.

[0083] Step S20: Run the air compressor 6 for 3 minutes to maintain the pressure in the main air duct 11 above 1 MPa;

[0084] Step S30: Open the second switch valve 3 and the third switch valve 4, observe the pressure gauge reading, and the test pressure should be greater than 0.88 MPa. At this time, close the main switch 1 to disconnect the air source, and maintain the pressure for 3 minutes without any external air source entering.

[0085] Step S301: After 3 minutes, observe the reading of the pressure gauge 7 again and calculate the pressure drop difference before and after pressure holding.

[0086] In step S302, if the pressure drop is less than 20 kPa, the airtightness of the automatic coupler body is normal. If the pressure drop is greater than 20 kPa, use a spray bottle or a brush to apply soapy water to each connection point of the ventilation air passage to find the leak.

[0087] The test principle of this embodiment is the same as that of Embodiment 2 of the test method for the automatic coupler function test. Here, the second switch valve 3 and the third switch valve 4 are opened to allow high-pressure air to pass through the MRP valve, BP valve, and uncoupling cylinder 411 into the hook body of the automatic coupler for airtightness testing.

[0088] In addition, this application also provides a test method for the functional testing of automatic couplers, used to test the alignment function of automatic couplers. Please refer to [the relevant documentation]. Figure 1 , Figure 2 , Figure 4 Example 4 of a test method for an automatic coupler function test corresponds to Example 1 of a test device for an automatic coupler function test mentioned above, and the steps include:

[0089] Step S10: Start the air compressor 6 and run it at the first preset pressure for the first preset duration;

[0090] Step S20: The automatic coupler to be tested is offset by a preset angle in a preset direction relative to its original preset installation position.

[0091] Step S30: Open the main switch 1 on the main air duct 11 and open the switch valve of at least one of the at least two parallel air supply ducts to keep the air pressure in the main air duct 11 at a level greater than the second preset pressure.

[0092] Step S301: After the operation under the second preset pressure is completed, detect the current position of the automatic coupler;

[0093] Step S302: If the current position of the automatic coupler is consistent with the preset installation position, then the automatic coupler's automatic alignment function is deemed qualified.

[0094] The first preset duration is the same as in the above embodiment, and will not be repeated here. The original preset installation position is the initial installation position of the automatic coupler under test on the test bench.

[0095] Based on the above embodiments, here is an embodiment 5 of a test method for an automatic coupler function test, please refer to... Figure 1 , Figure 2 , Figure 4 The test method steps for the automatic coupler alignment function test include:

[0096] Step S10: Connect the first air supply line 21 to the first coupler valve group 211, connect the third air supply line 41 to the uncoupling cylinder 411, connect the first branch air pipe 311 on the second air supply line 31 to the MRP valve, connect the second branch air pipe 322 to the BP valve, and turn on the air compressor 6.

[0097] Step S20: Run the air compressor 6 for 3 minutes to maintain the pressure in the main air duct 11 above 1 MPa;

[0098] Step S30: Move the automatic coupler 20° to the left or right from its initial installation position parallel to the ground, so that it is away from the initial installation position.

[0099] Step S40: Open the main switch 1 and the second switch valve 3, keep the air compressor 6 continuously ventilating, observe the air pressure gauge 7, and make the air pressure in the pipeline greater than 0.88Mpa. At this time, the automatic coupler will perform centering movement.

[0100] Step S50: After the automatic coupler centering movement is completed, the current position of the automatic coupler is measured with the initial centering position through the angle pool. If the current position is consistent with the initial installation position of the automatic coupler, the centering function is qualified.

[0101] When the second switch valve 3 is opened and ventilation is continuous, high-pressure air enters the electric hook telescopic cylinder through the MRP valve and BP valve, thereby controlling the automatic coupler to automatically center. After the centering movement is completed, the air compressor 6 is turned off and the exhaust valve 5 is opened to discharge the high-pressure gas in the pipeline.

[0102] In addition, this application also provides a test method for automatic coupler function testing, used to test the automatic coupling and automatic uncoupling tests of automatic couplers. Please refer to [reference needed]. Figure 1 , Figure 2 , Figure 5 Example 6 of a test method for an automatic coupler function test corresponds to Example 1 of a test device for an automatic coupler function test mentioned above, and the steps include:

[0103] Step S10: Start the air compressor 6 and run it at the first preset pressure for the first preset duration;

[0104] Step S20: After hooking the automatic car coupler to be tested into place on the test bench, turn on the main switch 1 on the main air duct 11 and open the switch valve of at least one of the at least two parallel air supply ducts to keep the air pressure in the main air duct 11 at a level greater than the second preset pressure.

[0105] Step S201: If the automatic coupler is in the extended and locked state, the automatic coupling function of the automatic coupler is deemed to be qualified.

[0106] Step S30: Close the switch valve in the opened air supply pipeline and open the remaining closed switch valves in the air supply pipeline.

[0107] Step S301: Observe the movement of the automatic coupler. If the automatic coupler is in the retracted and disengaged state, the automatic uncoupling function of the automatic coupler is deemed to be qualified.

[0108] Based on the above embodiments, here is embodiment 7 of a test method for an automatic coupler function test, please refer to... Figure 1 , Figure 2 , Figure 5 The steps of the test method for automatic coupling and uncoupling of automatic couplers include:

[0109] Step S10: Connect the first air supply line 21 to the first coupler valve group 211, connect the third air supply line 41 to the uncoupling cylinder 411, connect the first branch air pipe 311 on the second air supply line 31 to the MRP valve, connect the second branch air pipe 322 to the BP valve, and turn on the air compressor 6.

[0110] Step S20: Run the air compressor 6 for 3 minutes to maintain the pressure in the main air duct 11 above 1 MPa;

[0111] Step S30: Set the automatic coupler to be tested at the corresponding position on the test bench, keep the air compressor 6 continuously ventilating, observe the reading of the air pressure gauge 7 to keep it above 0.88 MPa, open the first switch valve 2 and the second switch valve 3, wait for the automatic coupler to engage and observe its movement results.

[0112] Step S40: After the automatic coupler completes the automatic coupling state, keep the air compressor 6 continuously ventilating to maintain the air pressure in the main air duct 11 above 0.88 MPa. Open the third switch valve 4 to activate the uncoupling cylinder 411, close the first switch valve 2 and the second switch valve 3, wait for the automatic coupler to uncouple and observe its movement results.

[0113] First, open the first switch valve 2 and the second switch valve 3 to ventilate the first coupler valve group 211 and the electric coupler telescopic cylinder. At this time, the automatic coupler will automatically engage under the action of high pressure air. After the automatic engagement is completed, close the first switch valve 2 and the second switch valve 3, and open the third switch valve 4. At this time, the uncoupling cylinder 411 will be connected, and the automatic coupler will perform the uncoupling movement.

[0114] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of this application, and are not intended to limit them. Although this application has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some or all of the technical features therein. Such modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of this application.

Claims

1. A testing device for automatic coupler function testing, characterized in that, include: The test stand is designed to support the automatic coupler to be tested; Air compressor (6); The main air duct (11) is connected to the air outlet of the air compressor (6). A main switch (1) is provided on the main air duct (11) in an openable and closable manner to control the on / off state of the main air duct (11); The pipeline assembly has an air inlet end connected to the air outlet end of the main air duct (11). The pipeline assembly includes at least two parallel air supply pipelines. Each air supply pipeline includes a branch air duct and a switch valve. The switch valve is closable and located between the air inlet end of the air supply pipeline and the air inlet end of the corresponding branch air duct. The air outlet end of the branch air duct is connected to the coupler valve group of the automatic coupler to be tested, so that the compressed air generated by the air compressor (6) can be selectively delivered to the corresponding cylinder of the automatic coupler to be tested through each air supply pipeline.

2. The testing device for automatic coupler function testing according to claim 1, characterized in that, The piping assembly includes three air supply lines, at least one of which includes two parallel branch air ducts.

3. The testing apparatus for the functional testing of automatic couplers according to any one of claims 1-2, characterized in that, The air outlet of each of the branch ducts is detachably connected to the corresponding coupler valve assembly.

4. The testing device for automatic coupler function testing according to claim 3, characterized in that, The air outlet of each of the branch ducts is threadedly connected to the corresponding coupler valve group.

5. The testing apparatus for the functional testing of automatic couplers according to any one of claims 1-2, characterized in that, The testing device also includes an exhaust valve (5), which is installed on the main air duct (11) and is used to drive the air in the main air duct (11) to be discharged.

6. The testing apparatus for the functional testing of automatic couplers according to claim 5, characterized in that, The exhaust valve (5) is also equipped with a silencer.

7. The testing apparatus for automatic coupler function testing according to claim 6, characterized in that, The testing device also includes a pressure gauge (7), which is connected to the main air duct (11) and is used to detect the air pressure inside the main air duct (11).

8. A test method for the functional testing of an automatic coupler, characterized in that, The test apparatus applicable to the functional test of the automatic coupler as described in any one of claims 1-7, wherein the test method comprises: Start the air compressor (6) and run it at the first preset pressure for a first preset time; After the air compressor (6) has been running for a first preset time under the first preset pressure, the main switch (1) on the main air duct (11) is opened, and the switch valve of at least one of the at least two parallel air supply ducts is opened, so that the air pressure in the main air duct (11) is maintained at a level greater than the second preset pressure. Turn off the main switch (1) and maintain pressure on the main air duct (11) and the corresponding open air supply duct for a period of time equal to the second preset time. After the pressure holding is completed, the pressure drop of the air pressure in the main air duct (11) is obtained; If the pressure drop in the main air duct (11) is greater than the preset threshold, the air tightness of the automatic coupler to be tested corresponding to the opened air supply duct is determined to be unqualified.

9. A test method for the functional testing of an automatic coupler, characterized in that, The test apparatus applicable to the functional test of the automatic coupler as described in any one of claims 1-7, wherein the test method comprises: Start the air compressor (6) and run it at the first preset pressure for a first preset time; The automatic coupler to be tested is offset by a preset angle relative to its initial installation position along a preset direction; Open the main switch (1) on the main air duct (11) and open the switch valve of at least one of the at least two parallel air supply ducts to keep the air pressure in the main air duct (11) at a level greater than the second preset pressure. After the operation under the second preset pressure is completed, the current position of the automatic coupler is detected; If the current position of the automatic coupler is consistent with the initial installation position, then the automatic coupler's automatic alignment function is deemed to be qualified.

10. A test method for the functional testing of an automatic coupler, characterized in that, The test apparatus applicable to the functional test of the automatic coupler as described in any one of claims 1-7, wherein the test method comprises: Start the air compressor (6) and run it at the first preset pressure for a first preset time; After the automatic vehicle hook to be tested is hooked into place with the test bench, the main switch (1) on the main air duct (11) is turned on, and the switch valve of at least one of the at least two parallel air supply ducts is turned on, so that the air pressure in the main air duct (11) is maintained at a level greater than the second preset pressure. If the automatic coupler is in the extended and locked state after operation, the automatic coupling function of the automatic coupler is deemed to be qualified. Close the switch valve in the air supply pipeline that has been opened, and open the remaining switch valves in the air supply pipeline that have not been opened; If the automatic coupler is in a retracted and disengaged state after operation, then the automatic uncoupling function of the automatic coupler is deemed to be qualified.

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