Test system

Abstract

The utility model relates to a test system which comprises a supply assembly, an output assembly and a test assembly, the output assembly is provided with a cavity and a movable part, the movable part is movably arranged in the cavity and divides the cavity into a first cavity body and a second cavity body, and the second cavity body is configured to contain a first medium; the test container is connected with the output assembly and is configured to accommodate at least one piece to be tested; wherein the supply assembly is configured to input a second medium into the first cavity to drive the movable part to move, and the movable part moves to input the first medium into the test container; the first medium input into the test container is not in contact with the second medium output by the supply assembly and is separated from the second medium, so that the first medium is not influenced by the temperature of the second medium, the temperature of the first medium in the test container is easy to control, and the temperature control capability of the test system on the test container is improved.

Description

Technical Field

[0001] The present application relates to the field of pressure testing technology, and in particular to a testing system. Background Art

[0002] Shock-absorbing airbags are one of the structural components used in automobile suspension systems. As the core component of the suspension system, the durability performance of shock-absorbing airbags is particularly important.

[0003] In the related art, the test system used for the durability test of the shock-absorbing air bag generally uses a pressure supply system to directly apply pressure to the shock-absorbing air bag through a medium. The medium circulates in the pressure supply system and the test environment where the shock-absorbing air bag is located. That is, the temperature of the medium in the test environment where the shock-absorbing air bag is located will be affected by the temperature of the pressure supply system, making it difficult for the test system to control the temperature of the test environment where the shock-absorbing air bag is located. Utility Model Content

[0004] The embodiments of the present application provide a testing system that improves the temperature control capability of the testing system for the test environment in which the shock-absorbing airbag is located, so as to at least partially solve the above-mentioned technical problems.

[0005] In order to achieve the above object, according to a first aspect of the present application, a testing system is provided, comprising:

[0006] Supply components;

[0007] an output assembly having a cavity and a movable member, wherein the movable member is movably disposed in the cavity and divides the cavity into a first cavity and a second cavity, wherein the second cavity is configured to accommodate a first medium; and

[0008] a test container connected to the output assembly and configured to accommodate at least one piece to be tested;

[0009] The supply assembly is configured to input the second medium into the first cavity to drive the movable member to move, and the movable member moves to input the first medium into the test container.

[0010] In some embodiments, a cross-sectional area of ​​the first cavity is smaller than a cross-sectional area of ​​the second cavity.

[0011] In some embodiments, the output assembly includes a housing, and the first cavity and the second cavity are both disposed within the housing;

[0012] The shell is also provided with a through hole, through which the movable part passes, one end of the through hole is located in the first cavity, and the other end of the through hole is located in the second cavity.

[0013] In some embodiments, at least a portion of the movable member located in the first cavity divides the first cavity into a first sub-cavity and a second sub-cavity;

[0014] The supply component can input the second medium into the first sub-chamber or the second sub-chamber.

[0015] In some embodiments, the supply assembly includes:

[0016] a first storage container configured to store a second medium;

[0017] a first output member connected to the first storage container; and

[0018] a reversing valve connected to the first output member and the housing;

[0019] The first output member can input the second medium from the reversing valve to the first sub-chamber or the second sub-chamber.

[0020] In some embodiments, the testing system further includes a temperature control component connected to the test container and configured to regulate the temperature of the first medium in the test container.

[0021] In some embodiments, the temperature control assembly includes:

[0022] a second storage container configured to store the first medium; and

[0023] a temperature control unit disposed in the second storage container, the temperature control unit being configured to regulate the temperature of the first medium in the second storage container;

[0024] The second output member is disposed in the second storage container and connected to the test container. The second output member is configured to input the first medium in the second storage container into the test container.

[0025] In some embodiments, the second output member is further connected to the output assembly;

[0026] The second output member is configured to input the first medium in the second storage container into the second cavity.

[0027] In some embodiments, the communication channel between the output assembly and the test container is a one-way channel to limit the first medium in the test container from flowing back into the second cavity.

[0028] In some embodiments, the communication channel between the output assembly and the test container is a bidirectional channel to allow the second medium to be transmitted between the second cavity and the test container.

[0029] In some embodiments, the test system further includes a pressure relief assembly connected to the test container, the pressure relief assembly being configured to maintain the pressure in the test container.

[0030] In some embodiments, the pressure relief assembly further includes a relief valve, which is in communication with the test container.

[0031] In some embodiments, the pressure relief assembly further includes an exhaust member in communication with the test container, the exhaust member being configured to exhaust gas within the test container.

[0032] The test assembly proposed in the present application includes a supply assembly, an output assembly, and a test assembly. The output assembly has a cavity and a movable member. The movable member is movably disposed in the cavity and divides the cavity into a first cavity and a second cavity. The second cavity is configured to contain a first medium. A test container is connected to the output assembly and configured to contain at least one test object. The supply assembly is configured to input a second medium into the first cavity to drive the movable member to move. The movable member moves to input the first medium into the test container. In an embodiment of the present application, by configuring the supply assembly to input the second medium into the first cavity, the second medium occupies a certain space in the first cavity, thereby driving the movable member to move. The movable member moves to output the first medium in the second cavity into the test container, thereby changing the pressure in the test container and performing a pressure test on the test object. The first medium input into the test container is not affected by the temperature of the second medium because it does not come into contact with the second medium output by the supply assembly and is separated from it. Therefore, the temperature of the first medium in the test container can be easily controlled, thereby improving the temperature control capability of the test system for the test container.

[0033] Other features and advantages of the present application will be described in detail in the subsequent detailed description. BRIEF DESCRIPTION OF THE DRAWINGS

[0034] To more clearly illustrate the technical solutions in the embodiments of the present application, the following briefly introduces the drawings required for describing the embodiments. Obviously, the drawings described below are only some embodiments of the present application. Those skilled in the art can also derive other drawings based on these drawings without inventive effort.

[0035] In order to more completely understand the present application and its beneficial effects, the following description will be given in conjunction with the accompanying drawings, wherein the same drawing numbers represent the same parts in the following description.

[0036] Figure 1 is a schematic structural diagram of a test system provided in an exemplary embodiment of the present application;

[0037] Figure 2 is a schematic diagram of the connection between the supply assembly and the output assembly provided in an exemplary embodiment of the present application;

[0038] Figure 3 is a schematic diagram of the connection of the output assembly, the overflow assembly, and the temperature control assembly provided in an exemplary embodiment of the present application;

[0039] Figure 4is a schematic structural diagram of a test system provided in an exemplary embodiment of the present application;

[0040] Figure 5 Schematic diagram of the connection between the supply component and the output component provided in an exemplary embodiment of the present application.

[0041] Description of reference numerals:

[0042] 1. Supply assembly; 11. First storage container; 12. First output member; 121. First drive motor; 122. First pump body; 13. Reversing valve; 14. First proportional relief valve; 15. First pressure sensor; 16. First accumulator; 17. First filter; 2. Output assembly; 21. Movable member; 22. Housing; 23. Displacement sensor; 24. First one-way valve; 3. Cavity; 31. First cavity; 311. First sub-cavity; 312. Second sub-cavity; 32. Second cavity; 4. Test assembly; 41. Test Container; 42. Second pressure sensor; 43. First temperature sensor; 5. Through hole; 6. Temperature control component; 61. Second storage container; 62. Temperature control component; 621. Temperature regulator; 622. Second temperature sensor; 63. Second output component; 631. Second drive motor; 632. Second pump body; 64. Second one-way valve; 65. Second filter; 66. Second proportional relief valve; 67. Second reversing valve; 68. Third one-way valve; 69. Second accumulator; 7. Pressure relief component; 71. Relief valve; 72. Exhaust component. DETAILED DESCRIPTION

[0043] The following will be combined with the drawings in the embodiments of the present application to clearly and completely describe the technical solutions in the embodiments of the present application. Obviously, the embodiments described are only part of the embodiments of the present application, not all of the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative work are within the scope of protection of the present application.

[0044] This application proposes a testing system. Figures 1 to 5 These are some embodiments of the present application.

[0045] See also Figures 1 to 2In some embodiments of the present application, a test system is proposed, which includes an output component 2, the output component 2 having a cavity 3 and a movable part 21, the movable part 21 being movably arranged in the cavity 3 and dividing the cavity 3 into a first cavity 31 and a second cavity 32, and the second cavity 32 being configured to accommodate a first medium; it can be understood that since the space in the cavity 3 is fixed, when the movable part 21 moves in the cavity 3, the volumes of the first cavity 31 and the second cavity 32 will change. If the volume of the first cavity 31 increases, the volume of the second cavity 32 will decrease. At this time, the first medium located in the second cavity 32 will be output from the second cavity 32 under the action of pressure.

[0046] In some embodiments of the present application, the testing system further includes a test container 41, which is connected to the output component 2 and is configured to accommodate at least one piece to be tested; wherein the first medium in the output component 2 can be input into the test container 41 from the second cavity 32, thereby increasing the pressure on the piece to be tested in the test container 41, so as to perform a pressure test experiment on the piece to be tested.

[0047] In some embodiments of the present application, the part to be tested in the test container 41 is a shock-absorbing airbag used for a vehicle. The shock-absorbing airbag is in a sealed state when placed in the test container 41. The shock-absorbing airbag is placed in the test container 41, and the pressure in the test container 41 is alternately changed to test how many pressure change cycles the shock-absorbing airbag can withstand before it breaks and leaks, or how many pressure change cycles it can withstand before it remains intact.

[0048] In some embodiments of the present application, the testing system further includes a supply assembly 1, which is configured to input a second medium into the first cavity 31 to drive the movable member 21 to move, and the movable member 21 moves to output the first medium to the test container 41; that is, the supply assembly 1 can enable the movable member 21 to move to output the first medium to the test container 41, so as to increase the pressure in the test container 41.

[0049] In the technical solution of the present application, a supply component 1 is provided to input a second medium into the first cavity 31. The second medium will occupy a certain space in the first cavity 31, thereby pushing the movable part 21 to move. The movable part 21 moves to output the first medium located in the second cavity 32 to the test container 41, so as to change the pressure in the test container 41, thereby performing a pressure test experiment on the test piece; wherein, the first medium input into the test container 41 is not in contact with the second medium output by the supply component 1 and is separated from each other, and therefore will not be affected by the temperature of the second medium, thereby making it easy to control the temperature of the first medium located in the test container 41, thereby improving the temperature control capability of the test system for the test container 41.

[0050] In some embodiments of the present application, the cross-sectional area of ​​the first cavity 31 is smaller than the cross-sectional area of ​​the second cavity 32; such a configuration enables the output component 2 to increase the volume of the first medium output by the movable part 21 per unit stroke, thereby improving the flow output capacity of the output component 2. At the same time, since the movable part 21 in the output component 2 can output a larger volume of the first medium in a shorter stroke, the movable stroke of the movable part 21 can be shortened, so that more test pieces can be pressure tested in the same time, thereby improving the energy efficiency of the test system.

[0051] It can be understood that since the cross-sectional area of ​​the first cavity 31 is smaller than the cross-sectional area of ​​the second cavity 32, the output pressure of the supply component 1 will be increased. Since the output pressure of the supply component 1 is increased, the temperature of the second medium will be increased. However, since the first medium and the second medium in the second cavity 32 are separated in the embodiment of the present application, the first medium in the second cavity 32 will not be affected by the temperature of the second medium, so that the temperature of the first medium located in the test container 41 can be easily controlled, thereby improving the temperature control ability of the test system on the test container 41.

[0052] In some embodiments of the present application, the output component 2 includes a shell 22, and the first cavity 31 and the second cavity 32 are both arranged in the shell 22; a through hole 5 is also provided on the shell 22, and the movable part 21 passes through the through hole 5, one end of the through hole 5 is located in the first cavity 31, and the other end of the through hole 5 is located in the second cavity 32; that is, in this embodiment, the second medium is input from the side of the first cavity 31 away from the movable part 21, thereby driving part of the movable part 21 located in the second cavity 32 to move, so as to reduce the space occupied by the first medium in the second cavity 32, and then input the first medium into the test container 41.

[0053] In some embodiments of the present application, the first cavity 31 and the second cavity 32 are arranged at intervals in a first direction, which is the moving direction of the movable member 21. A portion of the movable member 21 is located in the first cavity 31, and the other portion is located in the second cavity 32. When the second medium is input into the first cavity 31, the movable member 21 located in the first cavity 31 will move, thereby driving the movable member 21 located in the second cavity 32 to move, so as to output the first medium to the test container 41.

[0054] In some embodiments of the present application, at least a portion of the movable member 21 located in the first cavity 31 divides the first cavity 31 into a first sub-cavity 311 and a second sub-cavity 312; wherein, the supply assembly 1 is capable of inputting a second medium into the first sub-cavity 311 or the second sub-cavity 312; in this embodiment, by providing the supply assembly 1 to input the second medium into the first sub-cavity 311 or the second sub-cavity 312, the movable member 21 is capable of reciprocating in the cavity 3, thereby enabling the movable member 21 to apply pressure to the test container 41 multiple times to achieve the purpose of repeating the experiment.

[0055] Among them, since the volume of the first cavity 31 is fixed, as in one embodiment of the present application, when the second medium is input into the second sub-cavity 312, the volume of the second sub-cavity 312 increases, and under the action of pressure, the movable part 21 is driven to move, thereby reducing the volume of the first sub-cavity 311.

[0056] It can be understood that, in the description, the movable member 21 has an initial position in the cavity 3. The movable member 21 moves to the loading position under the drive of the second medium. When the movable member 21 is in the loading position, at least a portion of the first medium in the second cavity 32 has been input into the test container 41 to increase the pressure in the test container 41. When the movable member 21 is reset to the initial position, the movable member 21 has a movable stroke capable of moving to the loading position, thereby allowing the test system to repeatedly perform experiments on the test piece without human operation.

[0057] It should be noted that, in the process of moving the movable part 21 from the initial position to the loading position and then returning to the initial position, the capacity of the first medium in the second cavity 32 will decrease. The test system also includes a replenishment device, so that the first medium in the second cavity 32 can be replenished in time.

[0058] In some embodiments of the present application, the supply assembly 1 includes a first storage container 11, which is configured to store a first medium; a first output member 12 is connected to the first storage container 11; a reversing valve 13 connects the first output member 12 and the housing 22; wherein the first output member 12 can input the second medium from the reversing valve 13 to the first sub-cavity 311 or the second sub-cavity 312; that is, in this embodiment, the reversing valve 13 can realize the conduction between the first output member 12 and the first sub-cavity 311 and the second sub-cavity 312, respectively, so as to transfer the second medium in the first storage container 11 to the first sub-cavity 311 and the second sub-cavity 312, respectively, to drive the movable member 21 to reciprocate in the housing 22.

[0059] Among them, the first output member 12 includes a first drive motor 121 and a first pump body 122. The first drive motor 121 and the first pump body 122 are combined to be able to extract the second medium in the first storage container 11 and input it into the first sub-chamber 311 or the second sub-chamber 312 through the reversing valve 13.

[0060] Among them, the reversing valve 13 includes four connecting ends, which are respectively connected to the first sub-chamber 311, the second sub-chamber 312, the first pump body 122 and the first storage container 11. When the first pump body 122 outputs the second medium to the first sub-chamber 311, the second medium in the second sub-chamber 312 can flow into the first storage container 11 through the reversing valve 13; similarly, when the first pump body 122 outputs the second medium to the second sub-chamber 312, the second medium in the first sub-chamber 311 can flow into the first storage container 11 through the reversing valve 13, so as to avoid the second medium located in the first sub-chamber 311 or the second sub-chamber 312 interfering with the movement of the movable part 21 when the movable part 21 reciprocates.

[0061] In some embodiments of the present application, the reversing valve 13 is an electromagnetic reversing valve.

[0062] In some embodiments of the present application, the first pump body 122 is a variable displacement pump.

[0063] In some embodiments of the present application, the supply assembly 1 further includes a first proportional relief valve 14 ; wherein the first proportional relief valve 14 is used to control the output pressure of the second medium output by the supply assembly 1 .

[0064] In some embodiments of the present application, the supply assembly 1 further includes a first pressure sensor 15 , which is used to monitor the output pressure of the second medium output by the supply assembly 1 .

[0065] In some embodiments of the present application, the supply component 1 also includes a first accumulator 16, which is used to store the pressure pulsation of the supply component 1 and the pressure oil during the switching process of the electromagnetic reversing valve, and release the stored energy when the supply component 1 needs it.

[0066] In some embodiments of the present application, the supply assembly 1 further includes a first filter 17 , which is used to filter impurities in the second medium in the supply assembly 1 to protect components in the supply assembly 1 .

[0067] In some embodiments of the present application, the testing system further includes a temperature control component 6, which is connected to the test container 41 and is configured to regulate the temperature of the first medium in the test container 41. In this embodiment, by providing the temperature control component 6, the first medium in the test container 41 can be heated or cooled so that the temperature of the first medium in the test container 41 meets the test temperature of the test object.

[0068] It is understandable that, since the temperature of the first medium will not be disturbed by the second medium, the temperature control component 6 can more easily control the temperature of the first medium in the test container 41 .

[0069] See also Figure 3 In some embodiments of the present application, the temperature control assembly 6 includes a second storage container 61, a temperature control unit 62, and a second output unit 63. The second storage container 61 is configured to store a first medium. The temperature control unit 62 is disposed in the second storage container 61 and is configured to adjust the temperature of the first medium in the second storage container 61. The second output unit 63 is disposed in the second storage container 61 and is connected to the test container 41. The second output unit 63 is configured to input the first medium in the second storage container 61 into the test container 41. In this embodiment, the temperature in the second storage container 61 is adjusted by the temperature control unit 62, and the first medium in the second storage container 61 after adjusting the temperature is output to the test container 41 through the second output unit 63, so as to adjust the temperature of the first medium in the test container 41 so that the temperature of the first medium in the test container 41 meets the test temperature of the test object.

[0070] In some embodiments of the present application, the temperature control unit 62 includes a temperature regulator 621 and a second temperature sensor 622. The temperature regulator 621 can heat or cool the first medium in the second storage container 61, and combined with the second temperature sensor 622 to achieve closed-loop control of the temperature in the second storage container 61.

[0071] In some embodiments of the present application, the temperature control component 6 further includes a second proportional relief valve 66 ; wherein the second proportional relief valve 66 is used to control the output pressure of the first medium output by the temperature control component 6 .

[0072] In some embodiments of the present application, the temperature control component 6 further includes a first pressure sensor 15 , which is used to monitor the output pressure of the first medium output by the temperature control component 6 .

[0073] In some embodiments of the present application, the temperature control assembly 6 further includes a second filter 65 , which is used to filter impurities in the second medium in the temperature control assembly 6 to protect the components in the temperature control assembly 6 .

[0074] In some embodiments of the present application, the second output member 63 is also connected to the output component 2; wherein, the second output member 63 is configured to input the first medium in the second storage container 61 into the second cavity 32; that is, in this embodiment, the second output member 63 also has the function of replenishing the first medium into the second cavity 32 to improve the functional diversity of the temperature control component 6.

[0075] In the process of the movable member 21 moving from the initial position to the loading position and then returning to the initial position, the capacity of the first medium in the second cavity 32 decreases. At this time, the second output member 63 replenishes the first medium in the second cavity 32 .

[0076] In some embodiments of the present application, the temperature control assembly 6 also includes a second reversing valve 67, which includes at least three connection ends, one of which is connected to the second cavity 32, another is connected to the test container 41, and another is connected to the second pump body 632, so that the second pump body 632 can supply the first medium to the second cavity 32 or the test container 41 respectively.

[0077] In some embodiments of the present application, the second reversing valve 67 is an electro-hydraulic reversing valve.

[0078] In some embodiments of the present application, the temperature control component 6 also includes a second accumulator 69. When the second output member 63 supplies the first medium to the second cavity 32, part of the first medium can also be supplied to the second accumulator 69. When the second output member 63 is not connected to the second cavity 32, part of the first medium in the second accumulator 69 can also be replenished into the second cavity 32.

[0079] In some embodiments of the present application, a third one-way valve 68 is provided on the communication channel between the second reversing valve 67 and the test container 41 to limit the first medium in the test container 41 from flowing back into the temperature control assembly 6 .

[0080] In some embodiments of the present application, a second one-way valve 64 is provided on the communication channel between the second reversing valve 67 and the second cavity 32 to limit the first medium in the second cavity 32 from flowing back into the temperature control assembly 6 .

[0081] In some embodiments of the present application, the communication channel between the output assembly 2 and the test container 41 is a one-way channel to limit the first medium in the test container 41 from flowing back into the second cavity 32; that is, in this embodiment, when the movable member 21 returns to the initial position from the loading position, the pressure in the test container 41 does not change, thereby maintaining the test pressure of the test piece.

[0082] In some embodiments of the present application, a first one-way valve 24 is provided between the second cavity 32 and the test container 41 . The first one-way valve 24 is used to limit the first medium in the test container 41 from flowing back into the second cavity 32 .

[0083] See also Figures 4 and 5In some embodiments of the present application, the communication channel between the output component 2 and the test container 41 is a bidirectional channel to facilitate transmission of the second medium between the second cavity 32 and the test container 41. That is, in this embodiment, when the movable member 21 returns to the initial position from the loading position, part of the first medium in the test container 41 will flow back into the second cavity 32, causing the pressure in the test container 41 to change, thereby achieving a rise and fall in the pressure in the test container 41.

[0084] It is understandable that when the communication channel between the output component 2 and the test container 41 is a bidirectional channel, there is no need to provide an additional supply device to replenish the first medium in the second cavity 32; that is, the temperature control component 6 is not connected to the second cavity 32.

[0085] In some embodiments of the present application, the testing system further includes a pressure relief assembly 7, which is connected to the testing container 41 and is configured to maintain the pressure within the testing container 41; wherein, the pressure within the testing container 41 can be maintained at a set pressure by the pressure relief assembly 7 to avoid excessive pressure within the testing container 41, and at the same time, the pressure within the testing container 41 can be regulated by the pressure relief assembly 7.

[0086] In some embodiments of the present application, the pressure relief assembly 7 further includes an overflow valve 71, which is connected to the test container 41. The overflow valve 71 is provided to avoid excessive pressure in the test container 41, and the pressure in the test container 41 is regulated by the pressure relief assembly 7.

[0087] In some embodiments of the present application, a one-way channel is provided between the second cavity 32 and the test container 41. When the output component 2 inputs the first medium into the test container 41, the relief valve 71 is set according to the upper limit of the test pressure. After the test pressure is reached in the test container 41, the movable part 21 is reset to the initial position, and the relief valve 71 is set according to the lower limit of the test pressure. The pressure in the test container 41 is relieved to the set low pressure through the relief valve 71. The pressure in the test container 41 is changed back and forth according to the required value through the cooperation of the output component 2 and the relief valve 71.

[0088] The relief valve 71 is a proportional relief valve.

[0089] In some embodiments of the present application, based on the provision of a bidirectional channel between the second cavity 32 and the test container 41 , the relief valve 71 only limits the maximum pressure within the test container 41 and does not participate in the control of the alternating pressure within the test container 41 , thereby serving as a safety protection function.

[0090] The overflow valve 71 is an electromagnetic overflow valve.

[0091] In some embodiments of the present application, the overflow valve 71 is connected to the second storage container 61 to output the first medium discharged from the test container 41 into the second storage container 61, so as to realize the recycling of the first medium between the second cavity 32, the temperature control component 6, the test container 41 and the pressure relief component 7.

[0092] In some embodiments of the present application, the pressure relief assembly 7 further includes an exhaust member 72 , which is connected to the test container 41 and is configured to exhaust the gas in the test container 41 ; that is, the exhaust member 72 can exhaust the gas in the test container 41 before the pressure test.

[0093] In some embodiments of the present application, the exhaust member 72 is an electromagnetic switching valve.

[0094] In addition, the exhaust member 72 can also control the cooling of the test system after the pressure test is completed.

[0095] In some embodiments of the present application, the testing system further includes a testing assembly 4, which includes a testing container 41, a second pressure sensor 42, and a first temperature sensor 43. The testing container 41 is used to accommodate the test piece, the first temperature sensor 43 is used to detect the temperature inside the testing container 41, and the second pressure sensor 42 is used to detect the pressure inside the testing container 41.

[0096] The test process of the test system in the embodiment of the present application is as follows:

[0097] 1. System parameter settings.

[0098] When the test system is started, the test parameters such as the upper and lower limit pressures and the test medium temperature are set.

[0099] 2. Exhaust procedure and temperature control liquid replacement procedure.

[0100] Temperature Control Procedure for Second Storage Container 61: Second temperature sensor 622 detects the temperature of the first medium in second storage container 61. Based on the difference between the detected value and the test setpoint, temperature regulator 621 is controlled to adjust the temperature of the first medium in second storage container 61 to the test setpoint. Temperature regulator 621 has both heating and cooling capabilities, enabling temperature control based on settings. Therefore, the second temperature sensor and temperature regulator 621 work together to implement a closed-loop temperature control loop for the first medium in second storage container 61, maintaining temperature control throughout the entire test process.

[0101] Exhaust procedure: After the temperature of the first medium in the second storage container 61 is adjusted to the test setpoint, the second drive motor 631 drives the second pump 632 to discharge the first medium. The second proportional relief valve 66 is used to set the maximum pressure at the outlet of the second pump 632. After being filtered by the second filter 65, the second reversing valve 67 directs the first medium through the third check valve 68 into the test container 41, where it mixes with the first medium in the test container 41. The exhaust element 72 is then controlled to return the first medium in the test container 41 to the second storage container 61. The rapid flow of the first medium removes any air that may be present in the test container 41 and simultaneously regulates the temperature of the first medium in the test container 41. At this point, the relief valve 71 is set to control the maximum pressure in the test container 41 to prevent the pressure in the test container 41 from exceeding the specified value. After the exhaust procedure runs for a set period of time, the temperature-controlled liquid replacement procedure is executed.

[0102] Temperature-controlled fluid exchange procedure: The second drive motor 631 drives the second pump 632 to deliver the first medium. The second proportional relief valve 66 sets the maximum pressure at the outlet of the second pump 632. After being filtered by the second filter 65, the second reversing valve 67 directs the first medium through the third check valve 68 into the test container 41. The exhaust member 72 closes, and the first medium returns to the second storage container 61 through the relief valve 71. The pressure in the test container 41 is maintained at the set value of the relief valve 71. The first temperature sensor 43 detects the temperature of the first medium in the test container 41. When the temperature of the first medium in the test container 41 reaches the set operating temperature, the temperature-controlled fluid exchange procedure ends. If, during the following loading procedure, the first temperature sensor 43 detects that the temperature of the first medium in the test container 41 has reached the set critical value, loading is paused and the temperature-controlled fluid exchange procedure is executed again.

[0103] 3. Loading program

[0104] After the temperature of the first medium in the test container 41 reaches the set temperature and the temperature control and liquid replacement process is completed, the loading process is started. The loading process can be divided into two processes: the pressurization control process and the pressure relief control process.

[0105] Pressurization control procedure: The first drive motor 121 continuously rotates to drive the first pump body 122 to output the second medium. The first proportional relief valve 14 is used to set the maximum pressure at the outlet of the first pump body 122, and the first pressure sensor 15 is used to detect the outlet pressure of the first pump body 122. During pressurization control, the second medium enters the first sub-chamber 311 through the reversing valve 13, drives the movable part 21 to move in the direction of the first medium, and injects the first medium into the test container 41 through the first one-way valve 24. The exhaust part 72 in the loading program is closed. The relief valve 71 is set to the upper limit pressure set for the pressure test. The injected first medium causes the pressure in the test container 41 to rise until the second pressure sensor 42 detects that the pressure in the test container 41 reaches the upper limit pressure value of the pressure test, and the pressurization control process ends.

[0106] A displacement sensor 23 is installed within the housing 22 to detect the position of the movable part 21. The position data of the movable part 21 can be used to determine whether the remaining stroke of the movable part 21 is sufficient to complete the pressurization control procedure. If the remaining stroke is insufficient to complete the pressurization control procedure, the reversing valve 13 connects the second sub-chamber 312 and the first pump body 122, driving the movable part 21 to its initial position before resuming the pressurization control procedure. If the position of the movable part 21 is sufficient to complete the pressurization control procedure, but due to unforeseen circumstances the movable part 21 does not reach the set high pressure value even after reaching the loading position, the displacement sensor 23 detects that the movable part 21 has reached the loading position, and the reversing valve 13 connects the second sub-chamber 312 and the first pump body 122, driving the movable part 21 to its initial position before resuming the pressurization control procedure. If the set high pressure value is not reached after the set number of consecutive loading attempts, an alarm is triggered and the system is shut down, prompting a check of the test system for leaks. This function, as a safety measure, effectively reduces losses caused by leaks in the test system, thus reducing the need for inspections during long-term continuous operation. The temperature control system within the loading program performs the oil replenishment action: the second drive motor 631 drives the second pump body 632 to filter the first medium through the second filter 65; the second reversing valve 67 connects the second chamber 32 and the second pump body 632, and the first medium is output to the second chamber 32 through the second reversing valve 67. The refill pressure set by the second proportional relief valve 66 is equal to or slightly less than the low pressure value set for the pressure test. When pressurized, the pressure in the second chamber 32 rises rapidly. When the internal pressure of the second chamber 32 exceeds the refill pressure set by the second proportional relief valve 66, the second one-way valve 64 closes due to the pressure differential. Part of the first medium enters the second accumulator 69 for temporary storage, and part also overflows into the second storage container 61.

[0107] Pressure Relief Control Procedure: The pressurization control procedure ends, and the reversing valve 13 connects to the second sub-chamber 312. The second medium is introduced into the second sub-chamber 312, driving the movable member 21 to its initial position. The first check valve 24 closes, isolating the output assembly 2 from the test assembly 4. During the loading procedure, the exhaust member 72 closes. The relief valve 71 setting is adjusted to the lower pressure limit set for the pressure test. The pressure within the test container 41 overflows through the relief valve 71 until the second pressure sensor 42 detects that the pressure within the test container 41 has reached the lower pressure limit set for the pressure test. The pressure relief control procedure ends.

[0108] During the loading process, the temperature control assembly 6 performs the oil replenishment operation: the second drive motor 631 drives the second pump 632 to filter the first medium through the second filter 65. The second reversing valve 67 then transfers the first medium to the test container 41 through the third check valve 68. The second proportional relief valve 66 sets the replenishment pressure equal to or slightly less than the set low pressure for the pressure test. During pressure relief, the movable member 21 returns to its initial position, and the second check valve 64 opens due to the pressure differential. The second medium output from the second pump 632 and the second medium temporarily stored in the second accumulator 69 enter the second chamber 32, replenishing the second medium.

[0109] After the pressure relief control program is completed, the number of loading times is increased by one, and the system checks whether the number of loading times has reached the set value. If the set number of loading times is reached, loading is stopped. The temperature control unit 62 of the temperature control component 6 adjusts the loading medium in the test container 41 to the set value. Then the temperature control liquid replacement program is executed until the temperature of the first medium in the test container 41 is adjusted to the set value, and the pressure test is completed. If the set number of loading times is not reached, the detection data of the first temperature sensor 43 is checked. If the temperature of the medium in the test container 41 is out of tolerance, the temperature control liquid replacement program is executed, and the temperature of the first medium in the test container 41 is adjusted to the set range and loading is resumed. If the temperature of the medium in the first medium is qualified, the data of the displacement sensor 23 is checked. If the remaining stroke is not enough to complete the pressurization control process, the movable part 21 is reset to the initial position and the pressurization control program is continued.

[0110] The pressurization control program and the depressurization control program are executed alternately so that the shock-absorbing air bag durability test is reciprocatedly loaded according to the set alternating pressure until the set number of loading times is reached.

[0111] Furthermore, to improve the efficiency of shock-absorbing airbag durability testing, the testing system utilizes a multi-specimen simultaneous testing mode. This addresses the issue of simultaneous testing of multiple shock-absorbing airbags, hindering intuitive identification of bag failure. The testing system calculates the compressed volume of multiple shock-absorbing airbags at maximum loading pressure during testing based on data recorded by displacement sensor 23 and parameters from output component 2. The theoretical compression of the shock-absorbing airbags at maximum test pressure during testing is calculated using the inflated volume, number of shock-absorbing airbags, and upper and lower loading pressure limits. A shock-absorbing airbag failure is only considered possible if the difference between the two exceeds the theoretical compression of a single shock-absorbing airbag at maximum test pressure. Based on this theory, a statistically significant range of values ​​for the ratio of the two data points at bag failure is determined by combining data accumulation with lid-opening inspection and verification. If the ratio of the compressed volume at maximum test pressure to the theoretical compression of the shock-absorbing airbags during the previous test falls within this range, a shock-absorbing airbag failure is identified, and confirmation can be determined based on the progress of the test. Similarly, the data of the initial test frequency and the real-time test frequency can be processed to obtain similar bag breakage judgment criteria. The judgment function improves the intelligence of the system, improves the accuracy and efficiency of the data, reduces the probability of invalid inspection, and improves efficiency.

[0112] See also Figures 4 and 5 In some embodiments of the present application, the second proportional relief valve 66 can be replaced by an electromagnetic relief valve.

[0113] In the description of this application, the terms "first" and "second" are used for descriptive purposes only and should not be understood to indicate or imply relative importance or implicitly specify the number of technical features indicated. Therefore, a feature defined as "first" or "second" may explicitly or implicitly include one or more features. In the description of this application, "plurality" means two or more, unless otherwise specifically defined.

[0114] In the above embodiments, the description of each embodiment has its own focus. For parts that are not described in detail in a certain embodiment, reference can be made to the relevant descriptions of other embodiments.

[0115] The embodiments, implementation methods and related technical features of the present application can be combined and replaced with each other without conflict.

[0116] The above are merely preferred embodiments of the present application and do not constitute any form of limitation to the present application. However, any simple modifications, equivalent changes, and modifications made to the above embodiments based on the technical essence of the present application without departing from the content of the technical solution of the present application are still within the scope of the technical solution of the present application.

Claims

1. A testing system, characterized in that: include: Supply components; An output assembly comprises a cavity and a movable member, wherein the movable member is movably disposed in the cavity and divides the cavity into a first cavity and a second cavity, wherein the second cavity is configured to accommodate a first medium; and a test container connected to the output assembly and configured to accommodate at least one piece to be tested; The supply assembly is configured to input the second medium into the first cavity to drive the movable member to move, and the movable member moves to input the first medium into the test container.

2. The test system according to claim 1, wherein: The cross-sectional area of ​​the first cavity is smaller than the cross-sectional area of ​​the second cavity.

3. The test system according to claim 1, wherein: The output assembly includes a housing, and the first cavity and the second cavity are both disposed in the housing; The housing is further provided with a through hole, the movable member passes through the through hole, one end of the through hole is located in the first cavity, and the other end of the through hole is located in the second cavity.

4. The test system according to claim 3, characterized in that At least a portion of the movable member located in the first cavity divides the first cavity into a first sub-cavity and a second sub-cavity; The supply component is capable of inputting the second medium into the first sub-cavity or the second sub-cavity.

5. The test system according to claim 4, characterized in that: The supply assembly comprises: a first storage container configured to store a second medium; a first output member connected to the first storage container; and a reversing valve, connecting the first output member and the housing; The first output member can input a second medium from the reversing valve into the first sub-chamber or the second sub-chamber.

6. The test system according to claim 1, wherein: The testing system further includes a temperature control component connected to the testing container and configured to regulate the temperature of the first medium in the testing container.

7. The test system according to claim 6, characterized in that: The temperature control component includes: a second storage container configured to store the first medium; and a temperature control unit disposed in the second storage container, the temperature control unit being configured to regulate the temperature of the first medium in the second storage container; The second output member is disposed in the second storage container and connected to the test container, and the second output member is configured to input the first medium in the second storage container into the test container.

8. The test system according to claim 7, characterized in that: The second output member is also connected to the output assembly; The second output member is configured to input the first medium in the second storage container into the second cavity.

9. The test system according to claim 1, wherein: The communication channel between the output assembly and the test container is a one-way channel to limit the first medium in the test container from flowing back to the second cavity.

10. The test system according to claim 1, wherein: The communication channel between the output component and the test container is a bidirectional channel for transmitting the second medium between the second cavity and the test container.

11. The test system according to claim 1, wherein: The testing system further includes a pressure relief assembly connected to the testing container, the pressure relief assembly being configured to maintain the pressure in the testing container.

12. The test system according to claim 11, characterized in that: The pressure relief assembly further includes a relief valve, which is in communication with the test container.

13. The test system according to claim 12, characterized in that: The pressure relief assembly further includes an exhaust member in communication with the test container and configured to exhaust gas within the test container.

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