Corrugated pipe service life testing device and equipment

Abstract

The utility model relates to the technical field of testing tools, and particularly provides a corrugated pipe service life testing device and equipment. The device comprises a testing cavity, a middle fixing plate, a lower fixing plate, a first driving unit, a first connecting piece, a second connecting piece and a vacuum pump unit, the two ends of the tested corrugated pipe are fixedly connected with the first connecting piece and the second connecting piece respectively, the first connecting piece is fixedly connected with the side, close to the lower fixing plate, of the middle fixing plate, and the second connecting piece is fixedly connected with the side, close to the middle fixing plate, of the lower fixing plate. In the process that the first driving unit drives the middle fixing plate to move close to or away from the lower fixing plate, the tested corrugated pipe is extruded or stretched, so that the actual use working condition of the tested corrugated pipe is simulated; and in the service life testing process, the vacuum pump unit is used for maintaining the interior of the testing cavity at the specified vacuum degree, so that the testing working condition is closer to the actual use working condition of the tested corrugated pipe, and the accuracy of the tested service life of the corrugated pipe is improved.

Description

Technical Field

[0001] The present application relates to the technical field of testing tooling, and in particular to a bellows life testing device and equipment. Background Art

[0002] Bellows, as a tubular elastic sensitive component, are widely used in a variety of industries, including instrumentation, medical equipment, the automotive industry, packaging materials, and construction. Their characteristics include thin walls, high sensitivity, and the ability to withstand large displacements and deformations as well as certain pressures. Under the influence of internal pressure, they extend along the length of the tube, causing the movable end to displace in a manner proportional to the pressure, thereby converting the pressure into displacement or force. These characteristics of bellows necessitate life testing to ensure their safety and reliability in practical applications.

[0003] However, the existing bellows life test conditions are far from the actual working conditions, and the accuracy of the measured bellows life is low, resulting in poor stability of the bellows during actual use. Utility Model Content

[0004] In view of this, the purpose of the embodiments of the present application is to provide a bellows life test device to solve the technical problem that the accuracy of the existing bellows life test is low, resulting in poor stability of the bellows during actual use.

[0005] In a first aspect, an embodiment of the present application provides a bellows life test device, the device comprising: a test chamber, an intermediate fixing plate, a lower fixing plate, a first drive unit, a first connecting member, a second connecting member, and a vacuum pump unit;

[0006] The test cavity is arranged between the middle fixing plate and the lower fixing plate;

[0007] The first connecting member and the second connecting member are disposed in the test cavity, and the first connecting member is fixedly connected to a side of the intermediate fixing plate close to the lower fixing plate, and the second connecting member is fixedly connected to a side of the lower fixing plate close to the intermediate fixing plate;

[0008] The first driving unit is configured to drive the middle fixing plate to move closer to or away from the lower fixing plate;

[0009] The air inlet of the vacuum pump unit is in communication with the interior of the test chamber; the vacuum pump unit is configured to maintain the interior of the test chamber at a specified vacuum level during the life test;

[0010] During the life test, both ends of the tested bellows are fixedly connected to the first connecting member and the second connecting member respectively.

[0011] In the above-mentioned implementation process, the bellows life test device includes: a test chamber, an intermediate fixing plate, a lower fixing plate, a first drive unit, a first connecting member, a second connecting member, and a vacuum pump unit. Since the two ends of the bellows to be tested are fixedly connected to the first connecting member and the second connecting member respectively, and the first connecting member is fixedly connected to the side of the intermediate fixing plate close to the lower fixing plate, and the second connecting member is fixedly connected to the side of the lower fixing plate close to the intermediate fixing plate, when the first drive unit drives the intermediate fixing plate to move closer to or away from the lower fixing plate, the bellows to be tested will be squeezed or stretched to simulate the actual use conditions of the bellows to be tested; and during the life test, the vacuum pump unit maintains the interior of the test chamber at a specified vacuum degree, so that the test conditions of the bellows to be tested are closer to the actual use conditions, thereby improving the accuracy of the measured bellows life. This solves the technical problem that the accuracy of the existing bellows life test is low, resulting in poor stability of the bellows during actual use.

[0012] Optionally, in an embodiment of the present application, the device further includes: a second drive unit; the second drive unit is fixedly connected to the intermediate fixed plate, and the first connecting member is specifically fixedly connected to one end of the second drive unit close to the lower fixed plate; the second drive unit is configured to drive the first connecting member to move closer to or away from the lower fixed plate.

[0013] In the above implementation process, since the two ends of the tested bellows are respectively fixedly connected to the first connecting member and the second connecting member, and the first connecting member is specifically fixedly connected to the end of the second drive unit close to the lower fixed plate, and the second connecting member is fixedly connected to the side of the lower fixed plate close to the middle fixed plate, when the second drive unit drives the first connecting member to move closer to or away from the lower fixed plate, the tested bellows will be squeezed or stretched to simulate the actual operating conditions of the tested bellows. Since the second drive unit is fixedly connected to the middle fixed plate, and the first drive unit can drive the middle fixed plate to move closer to or away from the lower fixed plate to adjust the distance between the second drive unit and the lower fixed plate, the bellows life test device can thus implement life tests on tested bellows of various lengths.

[0014] Optionally, in an embodiment of the present application, the test chamber includes multiple sub-test chambers; the vacuum pump unit includes at least one vacuum pump; the second drive unit includes multiple second sub-drive units; the first connecting member includes multiple first sub-connectors; the second connecting member includes multiple second sub-connectors; wherein the specific number of the multiple is determined by the maximum number of bellows that can be tested simultaneously; the air inlet of the vacuum pump is connected to the interior of the corresponding sub-test chamber; the vacuum pump is configured to maintain the interior of the corresponding sub-test chamber at a specified vacuum degree during the life test; each first sub-connector and the corresponding second sub-connector are arranged in the same sub-test chamber; the second sub-drive unit is fixedly connected to the intermediate fixed plate, and the first sub-connector is fixedly connected to one end of the second sub-drive unit close to the lower fixed plate; the second sub-drive unit is configured to drive the first sub-connector to move closer to or away from the lower fixed plate; wherein, during the life test, the two ends of the bellows under test are respectively fixedly connected to the first sub-connector and the second sub-connector in the same sub-test chamber.

[0015] In the above implementation process, since the test chamber includes multiple sub-test chambers, the vacuum pump unit includes at least one vacuum pump, the second drive unit includes multiple second sub-drive units, the first connecting member includes multiple first sub-connecting members, and the second connecting member includes multiple second sub-connecting members, based on the bellows life test device, it is possible to simultaneously realize life tests on multiple bellows under test, greatly improving the efficiency of life tests on the bellows under test.

[0016] Optionally, in an embodiment of the present application, the first driving unit includes a first cylinder, and the second driving unit includes a second cylinder; the first piston rod of the first cylinder and the second piston rod of the second cylinder are both arranged toward the lower fixed plate; the device also includes: an upper fixed plate; the first cylinder barrel of the first cylinder is fixedly connected to the upper fixed plate; the first cylinder is configured to drive the intermediate fixed plate to move closer to or away from the lower fixed plate based on the first piston rod; the second cylinder barrel of the second cylinder is fixedly connected to the intermediate fixed plate; the second cylinder is configured to drive the first connecting member to move closer to or away from the lower fixed plate based on the second piston rod.

[0017] In the aforementioned implementation, both the first and second drive units are implemented using pneumatic cylinders, enabling rapid response to test instructions and precise motion control to ensure stability during the test. Furthermore, the relatively simple structure and operating principle of the pneumatic cylinders can reduce maintenance costs for the bellows life tester.

[0018] Optionally, in an embodiment of the present application, the device further includes: a plurality of guide shafts; one end of the guide shaft is fixedly connected to a side of the upper fixed plate close to the lower fixed plate, and the other end of the guide shaft is fixedly connected to a side of the lower fixed plate close to the upper fixed plate; the guide shaft also passes through the intermediate fixed plate, and the intermediate fixed plate is configured to move along the guide shaft toward or away from the lower fixed plate under the drive of the first drive unit.

[0019] In the above implementation process, the guide shaft can guide the movement of the intermediate fixing plate, thereby improving the stability of the intermediate fixing plate during the movement.

[0020] Optionally, in an embodiment of the present application, the device further includes: an internal vacuum pump unit; the air inlet of the internal vacuum pump unit is connected to the interior of the bellows under test; and the internal vacuum pump unit is configured to maintain the interior of the bellows under test at a specified internal vacuum degree during the life test.

[0021] In the above implementation process, the internal vacuum pump unit can maintain the interior of the tested bellows at a specified internal vacuum level during the life test, so that the test conditions of the tested bellows are closer to the actual use conditions, further improving the accuracy of the measured bellows life.

[0022] Optionally, in an embodiment of the present application, the device further includes: a heating unit; the heating unit is arranged around the test cavity; the heating unit is configured to maintain the interior of the test cavity at a specified temperature during the life test.

[0023] In the above implementation process, the heating unit can maintain the interior of the test chamber at a specified temperature during the life test, so that the test conditions of the tested bellows are closer to the actual use conditions, further improving the accuracy of the measured bellows life.

[0024] Optionally, in an embodiment of the present application, the device further includes: an electrical control box, an electrical control indication unit and an electrical control display unit; the electrical control box is communicatively connected to the electrical control indication unit and the electrical control display unit respectively; the electrical control box is configured to obtain the test time, test temperature or test vacuum of the tested bellows; the electrical control indication unit is configured to indicate the working status of the electrical control box; the electrical control display unit is configured to display the test time, the test temperature or the test vacuum.

[0025] In the above implementation process, the test parameters such as the test time, test temperature or test vacuum degree of the tested bellows can be obtained and recorded through the electric control box, and then the test parameters are displayed through the electric control display unit, so that the test personnel can view the test data of the tested bellows in real time; the working status of the electric control box is indicated by the electric control indication unit, so that the test personnel can promptly discover the abnormal working status of the electric control box and deal with the abnormal working status in time.

[0026] In a second aspect, an embodiment of the present application further provides a bellows life test device, the device comprising: a bellows life test device as described in any one of the first aspects above, a tooling platform, and a plurality of platform wheels;

[0027] The bellows life test device is arranged on the tooling platform, and the plurality of platform wheels are configured to be evenly arranged below the tooling platform.

[0028] Optionally, in an embodiment of the present application, the platform wheel includes a Forma wheel; the equipment further includes: a shock-absorbing pad; the shock-absorbing pad is arranged on the tooling platform, and the bellows life testing device is arranged on the shock-absorbing pad.

[0029] In the above implementation process, the Forma wheel can effectively reduce the contact area between the bellows life test equipment and the ground, and evenly distribute the weight of the bellows life test equipment on the Forma wheel. The highly flexible mobility of the Forma wheel can improve the efficiency and stability of the mobile working of the bellows life test equipment. By placing the anti-vibration pad on the tooling platform and placing the bellows life test device on the anti-vibration pad, the stability of the bellows life test equipment during the life test can be improved.

[0030] The beneficial effects of the present application are as follows: the bellows life test device includes: a test chamber, an intermediate fixing plate, a lower fixing plate, a first drive unit, a first connecting member, a second connecting member, and a vacuum pump unit. Since the two ends of the bellows to be tested are fixedly connected to the first connecting member and the second connecting member respectively, and the first connecting member is fixedly connected to the side of the intermediate fixing plate close to the lower fixing plate, and the second connecting member is fixedly connected to the side of the lower fixing plate close to the intermediate fixing plate, when the first drive unit drives the intermediate fixing plate to move closer to or away from the lower fixing plate, the bellows to be tested will be squeezed or stretched to simulate the actual use conditions of the bellows to be tested; and during the life test, the interior of the test chamber is maintained at a specified vacuum degree by the vacuum pump unit, so that the test conditions of the bellows to be tested are closer to the actual use conditions, thereby improving the accuracy of the measured bellows life. This solves the technical problem that the accuracy of the existing bellows life test is low, resulting in poor stability of the bellows during actual use. BRIEF DESCRIPTION OF THE DRAWINGS

[0031] In order to more clearly illustrate the technical solutions of the embodiments of the present application, the following is a brief introduction to the drawings required for use in the embodiments of the present application. It should be understood that the following drawings only show certain embodiments of the present application and therefore should not be regarded as limiting the scope. For ordinary technicians in this field, other relevant drawings can be obtained based on these drawings without creative work.

[0032] Figure 1 A schematic structural diagram of a bellows life test device provided in an embodiment of the present application;

[0033] Figure 2 A schematic structural diagram of another bellows life test device provided in an embodiment of the present application;

[0034] Figure 3 A schematic structural diagram of a bellows life test device provided in an embodiment of the present application.

[0035] Figure markings: 01- bellows life test device; 101- test chamber; 1010- sub-test chamber; 102- middle fixed plate; 103- lower fixed plate; 104- first drive unit; 105- first connecting piece; 1050- first sub-connecting piece; 106- second connecting piece; 1060- second sub-connecting piece; 107- vacuum pump unit; 108- second drive unit; 1080- second sub-drive unit; 109- upper fixed plate; 110- guide shaft; 111- heating unit; 112- electric control box; 113- electric control indicating unit; 114- electric control display unit; 02- bellows life test equipment; 021- tooling platform; 022- platform wheel; 023- shockproof pad. DETAILED DESCRIPTION

[0036] The following embodiments of the technical solution of the present application will be described in detail with reference to the accompanying drawings. The following embodiments are only used to more clearly illustrate the technical solution of the present application and are therefore only examples and are not intended to limit the scope of protection of the present application.

[0037] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by those skilled in the art to which this application belongs. The terms used herein are only for the purpose of describing specific embodiments and are not intended to limit this application.

[0038] In the description of the embodiments of this application, the technical terms "first" and "second" are used only to distinguish different objects and should not be understood to indicate or imply relative importance or implicitly specify the quantity, specific order, or primary and secondary relationship of the indicated technical features. In the description of the embodiments of this application, the meaning of "plurality" is two or more, unless otherwise specifically defined.

[0039] Please refer to Figure 1 , Figure 1 This is a schematic diagram of the structure of a bellows life test device 01 provided in an embodiment of the present application. The bellows life test device 01 includes: a test chamber 101, an intermediate fixing plate 102, a lower fixing plate 103, a first drive unit 104, a first connecting member 105, a second connecting member 106, and a vacuum pump unit 107;

[0040] The test chamber 101 is provided between the middle fixing plate 102 and the lower fixing plate 103;

[0041] The first connecting member 105 and the second connecting member 106 are disposed in the test chamber 101 , and the first connecting member 105 is fixedly connected to a side of the middle fixing plate 102 close to the lower fixing plate 103 , and the second connecting member 106 is fixedly connected to a side of the lower fixing plate 103 close to the middle fixing plate 102 ;

[0042] The first driving unit 104 is configured to drive the middle fixing plate 102 to move closer to or away from the lower fixing plate 103;

[0043] The air inlet of the vacuum pump unit 107 is in communication with the interior of the test chamber 101 ; the vacuum pump unit 107 is configured to maintain the interior of the test chamber 101 at a specified vacuum level during the life test;

[0044] During the life test, both ends of the tested bellows are fixedly connected to the first connecting member 105 and the second connecting member 106 respectively.

[0045] In particular, a force sensor (which may be a tension sensor or a pressure sensor) can be set on the surface of the first connecting member 105 or the second connecting member 106, and the data measured by the force sensor can be used to assist in determining the test life of the tested bellows. The test chamber 101 can be a transparent test chamber or an opaque test chamber. Preferably, the test chamber 101 can be implemented by a transparent test chamber so that the tester can observe the test conditions in the test chamber 101. The manufacturing material and cavity space size of the test chamber 101 can be adjusted according to the actual bellows testing requirements; for example, the manufacturing material of the test chamber 101 can include acrylic material, polyvinyl chloride material or polycarbonate material. The maximum distance and minimum distance between the middle fixing plate 102 and the lower fixing plate 103 can be adjusted according to the actual bellows testing requirements (for example, the model and length range of the tested bellows, etc.). The first drive unit 104 can be implemented by a motor, a hydraulic cylinder or a pneumatic cylinder. The first connector 105 or the second connector 106 can be implemented by a screw lock, a clamp-type connector or a snap-on connector, etc. The implementation method of the first connector 105 and the implementation method of the second connector 106 can be the same or different, and this application does not make any specific restrictions on this. For example, when the bellows to be tested is a KF40 bellows, the first connector 105 and the second connector 106 can both be implemented by KF40 quick clamps. The vacuum pump unit 107 can be implemented by a mechanical vacuum pump such as a reciprocating vacuum pump, a piston vacuum pump or a rotary vane vacuum pump. Since the air inlet of the vacuum pump unit 107 is connected to the interior of the test chamber 101, the internal air of the test chamber 101 can be (partially) discharged through the vacuum pump unit 107 to maintain the interior of the test chamber 101 at a specified vacuum degree during the life test. A sealing ring can be provided around the contact surface between the test chamber 101 and the lower fixed plate 103 to ensure that the interior of the test chamber 101 can be maintained at a specified vacuum degree during the life test.

[0046] Thus, the bellows life test device 01 provided in the embodiment of the present application includes: a test chamber 101, an intermediate fixing plate 102, a lower fixing plate 103, a first driving unit 104, a first connecting member 105, a second connecting member 106, and a vacuum pump unit 107. Since the two ends of the bellows to be tested are fixedly connected to the first connecting member 105 and the second connecting member 106 respectively, and the first connecting member 105 is fixedly connected to the side of the intermediate fixing plate 102 close to the lower fixing plate 103, and the second connecting member 106 is fixedly connected to the side of the lower fixing plate 103 close to the intermediate fixing plate 102, when the first driving unit 104 drives the intermediate fixing plate 102 to move closer to or away from the lower fixing plate 103, the bellows to be tested will be squeezed or stretched, thereby simulating the actual use conditions of the bellows to be tested. During the life test, the vacuum pump unit 107 maintains the interior of the test chamber at a specified vacuum level, so that the test conditions of the bellows to be tested are closer to the actual use conditions, thereby improving the accuracy of the measured bellows life. The invention solves the technical problem that the accuracy of the existing bellows life test is low, which leads to poor stability of the bellows during actual use.

[0047] Please refer to Figure 2 , Figure 2 A schematic structural diagram of another bellows life testing device 01 provided in an embodiment of the present application.

[0048] In some optional embodiments, the bellows life testing device 01 also includes: a second driving unit 108; the second driving unit 108 is fixedly connected to the intermediate fixed plate 102, and the first connecting member 105 is specifically fixedly connected to one end of the second driving unit 108 close to the lower fixed plate 103; the second driving unit 108 is configured to drive the first connecting member 105 to move closer to or away from the lower fixed plate 103.

[0049] Among them, the second drive unit 108 can be implemented by a motor, a hydraulic cylinder or a pneumatic cylinder, etc. The implementation method of the second drive unit 108 can be the same as or different from the implementation method of the first drive unit 104. Since the two ends of the tested bellows are fixedly connected to the first connecting member 105 and the second connecting member 106 respectively, and the first connecting member 105 is specifically fixedly connected to the end of the second drive unit 108 close to the lower fixed plate 103, and the second connecting member 106 is fixedly connected to the side of the lower fixed plate 103 close to the middle fixed plate 102, when the second drive unit 108 drives the first connecting member 105 to move closer to or away from the lower fixed plate 103, the tested bellows will be squeezed or stretched to simulate the actual working conditions of the tested bellows. Since the second drive unit 108 is fixedly connected to the intermediate fixed plate 102, and the first drive unit 104 can drive the intermediate fixed plate 102 to move closer to or away from the lower fixed plate 103 to adjust the distance between the second drive unit 108 and the lower fixed plate 103, the bellows life test device 01 can realize the life test of the tested bellows of various length sizes.

[0050] In some optional embodiments, the test chamber 101 includes multiple sub-test chambers 1010; the vacuum pump unit 107 includes at least one vacuum pump; the second drive unit 108 includes multiple second sub-drive units 1080; the first connector 105 includes multiple first sub-connectors 1050; the second connector 106 includes multiple second sub-connectors 1060; wherein the specific number of the multiple sub-connectors is determined by the maximum number of bellows that can be tested simultaneously; the air inlet of the vacuum pump is connected to the interior of the corresponding sub-test chamber 1010; the vacuum pump is configured to maintain the interior of the corresponding sub-test chamber 1010 at a specified vacuum level during the life test; Each first sub-connector 1050 and the corresponding second sub-connector 1060 are arranged in the same sub-test cavity 1010; the second sub-drive unit 1080 is fixedly connected to the intermediate fixed plate 102, and the first sub-connector 1050 is fixedly connected to one end of the second sub-drive unit 1080 close to the lower fixed plate 103; the second sub-drive unit 1080 is configured to drive the first sub-connector 1050 to move closer to or away from the lower fixed plate 103; wherein, during the life test process, the two ends of the bellows under test are respectively fixedly connected to the first sub-connector 1050 and the second sub-connector 1060 in the same sub-test cavity 1010.

[0051] The sub-test chamber 1010 can be transparent or opaque. Preferably, the sub-test chamber 1010 can be transparent, allowing the tester to observe the test conditions within each sub-test chamber 1010. The material and size of the sub-test chamber 1010 can be adjusted based on the actual bellows testing requirements. For example, the sub-test chamber 1010 can be made of acrylic, polyvinyl chloride, or polycarbonate. The vacuum pump can be a mechanical vacuum pump, such as a reciprocating vacuum pump, a piston vacuum pump, or a rotary vane vacuum pump. The second sub-drive unit 1080 can be implemented by a drive unit, such as a motor, a hydraulic cylinder, or a pneumatic cylinder. The first sub-connector 1050 or the second sub-connector 1060 can be implemented by screw locks, clamps, or snap-on connectors. The implementation of the first sub-connector 1050 and the second sub-connector 1060 can be the same or different, and this application does not impose specific limitations on this.

[0052] Among them, the number of sub-test chambers 1010, second sub-drive units 1080, first sub-connectors 1050, and second sub-connectors 1060 can be 2, 5, or other reasonable values. The number of vacuum pumps can be one or more. When the number of vacuum pumps is one, the air inlet of one vacuum pump can be connected to multiple sub-test chambers 1010 respectively, and during the life test process, the interior of the multiple sub-test chambers 1010 is maintained at a specified vacuum degree. The number of sub-test chambers 1010, vacuum pumps, second sub-drive units 1080, first sub-connectors 1050, or second sub-connectors 1060 can be the same or different. The maximum number of bellows that can be tested simultaneously by the bellows life test device 01 is determined by the minimum number of sub-test chambers 1010, second sub-drive units 1080, first sub-connectors 1050, and second sub-connectors 1060. The number of sub-test chambers 1010, second sub-drive units 1080, first sub-connectors 1050, and second sub-connectors 1060 is greater than or equal to the maximum number of bellows that can be tested simultaneously by the bellows life test device 01. Because the test chamber 101 includes multiple sub-test chambers 1010, the vacuum pump unit 107 includes at least one vacuum pump, the second drive unit 108 includes multiple second sub-drive units 1080, the first connector 105 includes multiple first sub-connectors 1050, and the second connector 106 includes multiple second sub-connectors 1060, the bellows life test device 01 can simultaneously perform life tests on multiple bellows under test, significantly improving the efficiency of life tests on the tested bellows. Figure 2 The example only shows a case where the number of the sub-test cavity 1010 , the second sub-driving unit 1080 , the first sub-connector 1050 , and the second sub-connector 1060 are all two.

[0053] In some optional embodiments, the first drive unit 104 includes a first cylinder, and the second drive unit 108 includes a second cylinder; the first piston rod of the first cylinder and the second piston rod of the second cylinder are both set toward the lower fixed plate 103; the bellows life testing device 01 also includes: an upper fixed plate 109; the first cylinder barrel of the first cylinder is fixedly connected to the upper fixed plate 109; the first cylinder is configured to drive the intermediate fixed plate 102 to move closer to or away from the lower fixed plate 103 based on the first piston rod; the second cylinder barrel of the second cylinder is fixedly connected to the intermediate fixed plate 102; the second cylinder is configured to drive the first connecting member 105 to move closer to or away from the lower fixed plate 103 based on the second piston rod.

[0054] Among them, the first cylinder or the second cylinder can be specifically implemented by an adjustable stroke cylinder (for example, a 40*400 adjustable cylinder or a 50*400 adjustable cylinder; a 40*400 adjustable cylinder means that the cylinder diameter is 40mm and the cylinder stroke is 400mm; a 50*400 adjustable cylinder means that the cylinder diameter is 50mm and the cylinder stroke is 400mm). The second piston rod of the second cylinder passes through the intermediate fixed plate 102 and extends into the test chamber 101. A sealing ring can be set around the contact area between the second piston rod and the intermediate fixed plate 102 to ensure that the internal vacuum environment of the test chamber 101 is not affected when the second piston rod drives the first connecting member 105 to move closer to or away from the lower fixed plate 103, thereby improving the accuracy of the measured bellows life. A plurality of polytetrafluoroethylene gaskets of various sizes can also be set at the end of the second cylinder away from the lower fixed plate 103 to facilitate adjustment of the movement range of the first connecting member 105 driven by the second cylinder. The upper fixing plate 109 provides support for the first cylinder. Both the first drive unit 104 and the second drive unit 108 are implemented using cylinders, enabling rapid response to test instructions and precise motion control to ensure stability during the test. Furthermore, the relatively simple structure and operating principle of the cylinders reduce maintenance costs for the bellows life tester 01.

[0055] In some optional embodiments, the bellows life testing device 01 also includes: multiple guide shafts 110; one end of the guide shaft 110 is fixedly connected to the side of the upper fixed plate 109 close to the lower fixed plate 103, and the other end of the guide shaft 110 is fixedly connected to the side of the lower fixed plate 103 close to the upper fixed plate 109; the guide shaft 110 also passes through the intermediate fixed plate 102, and the intermediate fixed plate 102 is configured to move along the guide shaft 110 towards or away from the lower fixed plate 103 under the drive of the first drive unit 104.

[0056] The number of guide shafts 110 can be 2, 4, or any other reasonable number. Multiple guide shafts 110 can be evenly distributed through the intermediate fixing plate 102 to improve the stability of the intermediate fixing plate 102 as it moves toward or away from the lower fixing plate 103 along the guide shafts 110. The guide shafts 110 can guide the movement of the intermediate fixing plate 102, improving its stability during movement.

[0057] In some optional embodiments, the bellows life test device 01 also includes: an internal vacuum pump unit; the air inlet of the internal vacuum pump unit is connected to the interior of the bellows under test; the internal vacuum pump unit is configured to maintain the interior of the bellows under test at a specified internal vacuum degree during the life test.

[0058] The internal vacuum pump unit can be implemented by a mechanical vacuum pump, such as a reciprocating vacuum pump, a piston vacuum pump, or a rotary vane vacuum pump. In the case where "test chamber 101 includes multiple sub-test chambers 1010; vacuum pump unit 107 includes at least one vacuum pump; second drive unit 108 includes multiple second sub-drive units 1080; first connector 105 includes multiple first sub-connectors 1050; and second connector 106 includes multiple second sub-connectors 1060," the internal vacuum pump unit can also include at least one internal vacuum pump. The internal vacuum pump unit and vacuum pump unit 107 can be implemented by the same mechanical vacuum pump or by different mechanical vacuum pumps. For example, if the internal vacuum pump unit and vacuum pump unit 107 are implemented by the same mechanical vacuum pump, the air inlet of the mechanical vacuum pump can be connected to the interior of the test chamber 101 and the interior of the bellows under test, respectively, via separate vacuum lines. The internal vacuum pump unit can maintain the interior of the tested bellows at a specified internal vacuum level during the life test, so that the test conditions of the tested bellows are closer to the actual use conditions, further improving the accuracy of the measured bellows life.

[0059] In some optional embodiments, the bellows life test device 01 further includes: a heating unit 111; the heating unit 111 is arranged around the test cavity 101; the heating unit 111 is configured to maintain the interior of the test cavity 101 at a specified temperature during the life test.

[0060] The heating unit 111 can be implemented by a heating belt or an electric heating plate. Preferably, the heating belt can be implemented to uniformly heat and maintain the temperature of the test cavity 101. The heating unit 111 can maintain the interior of the test cavity 101 at a specified temperature during the life test, making the test conditions of the tested bellows closer to actual operating conditions, further improving the accuracy of the measured bellows life.

[0061] In some optional embodiments, the bellows life testing device 01 further includes: an electrical control box 112, an electrical control indicating unit 113 and an electrical control display unit 114; the electrical control box 112 is communicatively connected to the electrical control indicating unit 113 and the electrical control display unit 114 respectively; the electrical control box 112 is configured to obtain the test time, test temperature or test vacuum of the tested bellows; the electrical control indicating unit 113 is configured to indicate the working status of the electrical control box 112; the electrical control display unit 114 is configured to display the test time, the test temperature or the test vacuum.

[0062] The electric control box 112 may have functions such as displaying operating parameters, measuring parameters, indicating abnormal conditions, or issuing signals. The electric control indicator unit 113 may be implemented by an indicator light or a buzzer. The electric control indicator unit 113 may be located above the electric control box 112 and communicate with the electric control box 112 to indicate the operating status of the electric control box 112 under the control of the electric control box 112. The electric control display unit 114 may be implemented by a display device such as a display screen. The electric control display unit 114 may also be located above the electric control box 112 and communicate with the electric control box 112 to display test parameters such as test time, test temperature, or test vacuum under the control of the electric control box 112. The test parameters such as the test time, test temperature or test vacuum degree of the tested bellows can be obtained and recorded through the electric control box 112, and then the test parameters can be displayed through the electric control display unit 114, so that the test personnel can view the test data of the tested bellows in real time; the working status of the electric control box 112 can be indicated through the electric control indication unit 113, so that the test personnel can promptly discover the abnormal working status of the electric control box 112 and deal with the abnormal working status in time.

[0063] Please refer to Figure 3 , Figure 3 This is a schematic diagram of the structure of a bellows life test device 02 provided in an embodiment of the present application. The bellows life test device 02 comprises: a bellows life test device 01 as described in any one of the first aspects above, a tooling platform 021, and a plurality of platform wheels 022;

[0064] The bellows life test device 01 is set on a tooling platform 021 , and a plurality of platform wheels 022 are configured to be evenly arranged below the tooling platform 021 .

[0065] The tooling platform 021 can be implemented by a 4040 profile tooling platform or a 4080 profile tooling platform, etc. The platform wheels 022 can be implemented by universal wheels or Fomar wheels, etc. The number of platform wheels 022 can be 2, 3, 4, or any other reasonable number.

[0066] Optionally, in an embodiment of the present application, the platform wheel 022 includes a Forma wheel; the bellows life test equipment 02 also includes: a shock-absorbing pad 023; the shock-absorbing pad 023 is arranged on the tooling platform 021, and the bellows life test device 01 is arranged on the shock-absorbing pad 023.

[0067] The shock-absorbing pads 023 can be implemented as elastic pads, such as rubber pads, gel shock-absorbing pads, or foam shock-absorbing pads. The Forma wheel effectively reduces the contact area between the bellows life test equipment 02 and the ground, and evenly distributes the weight of the bellows life test equipment 02 on the Forma wheel. Leveraging the Forma wheel's highly flexible mobility, the mobile efficiency and stability of the bellows life test equipment 02 are improved. By placing the shock-absorbing pads 023 on the tooling platform 021 and the bellows life test device 01 on the shock-absorbing pads 023, the stability of the bellows life test equipment 02 during the life test can be improved.

[0068] Optionally, in the embodiment of the present application, the vacuum pump unit 107 in the bellows life test device 01 can be placed on the middle shelf of the tooling platform 021 . The electric control box 112 in the bellows life test device 01 can be installed on the side of the tooling platform 021 .

[0069] It should be understood that the bellows life test equipment 02 corresponds to the above-mentioned bellows life test device 01 embodiment. The specific implementation method of the bellows life test equipment 02 can be found in the description above. To avoid repetition, the detailed description is appropriately omitted here.

[0070] In the several embodiments provided in the embodiments of the present application, it should be understood that the disclosed apparatus / device may also be implemented in other ways. The apparatus embodiments described above are merely schematic. For example, the flowcharts and block diagrams in the accompanying drawings show the possible architectures, functions, and operations of the apparatus according to the multiple embodiments of the embodiments of the present application. In this regard, each box in the flowchart or block diagram may represent a module or a portion of a module. It should also be noted that each box in the block diagram and / or flowchart, and the combination of boxes in the block diagram and / or flowchart, may be implemented using a dedicated hardware-based system that performs the specified functions or actions, or may be implemented using a combination of dedicated hardware and computer instructions.

[0071] In addition, the functional modules in each embodiment of the present application can be integrated together to form an independent part, or each module can exist independently, or two or more modules can be integrated to form an independent part.

[0072] The above description is only an optional implementation method of the embodiment of the present application, but the protection scope of the embodiment of the present application is not limited to this. Any technician familiar with this technical field can easily think of changes or replacements within the technical scope disclosed in the embodiment of the present application, and they should all be covered by the protection scope of the embodiment of the present application.

Claims

1. A bellows life test device, characterized in that: The device comprises: a test chamber, an intermediate fixing plate, a lower fixing plate, a first driving unit, a first connecting member, a second connecting member and a vacuum pump unit; The test cavity is arranged between the middle fixing plate and the lower fixing plate; The first connecting member and the second connecting member are disposed in the test cavity, and the first connecting member is fixedly connected to a side of the intermediate fixing plate close to the lower fixing plate, and the second connecting member is fixedly connected to a side of the lower fixing plate close to the intermediate fixing plate; The first driving unit is configured to drive the middle fixing plate to move closer to or away from the lower fixing plate; The air inlet of the vacuum pump unit is in communication with the interior of the test chamber; the vacuum pump unit is configured to maintain the interior of the test chamber at a specified vacuum level during the life test; During the life test, both ends of the tested bellows are fixedly connected to the first connecting member and the second connecting member respectively.

2. The device according to claim 1, characterized in that The device further comprises: a second driving unit; The second driving unit is fixedly connected to the middle fixing plate, and the first connecting member is specifically fixedly connected to an end of the second driving unit close to the lower fixing plate; The second driving unit is configured to drive the first connecting member to move closer to or away from the lower fixing plate.

3. The device according to claim 2, characterized in that in, The test chamber includes a plurality of sub-test chambers; the vacuum pump unit includes at least one vacuum pump; the second drive unit includes a plurality of second sub-drive units; the first connecting member includes a plurality of first sub-connecting members; and the second connecting member includes a plurality of second sub-connecting members; wherein the specific number of the plurality is determined by the maximum number of bellows that can be tested simultaneously; The air inlet of the vacuum pump is in communication with the interior of the corresponding sub-test chamber; the vacuum pump is configured to maintain the interior of the corresponding sub-test chamber at a specified vacuum level during the life test; Each of the first sub-connecting members and the corresponding second sub-connecting member are disposed in the same sub-test cavity; The second sub-drive unit is fixedly connected to the middle fixed plate, and the first sub-connector is fixedly connected to an end of the second sub-drive unit close to the lower fixed plate; the second sub-drive unit is configured to drive the first sub-connector to move closer to or away from the lower fixed plate; During the life test, both ends of the tested bellows are fixedly connected to the first sub-connector and the second sub-connector in the same sub-test cavity, respectively.

4. The device according to claim 2, characterized in that in, The first driving unit includes a first cylinder, and the second driving unit includes a second cylinder; the first piston rod of the first cylinder and the second piston rod of the second cylinder are both arranged toward the lower fixed plate; the device further includes: an upper fixed plate; The first cylinder barrel of the first cylinder is fixedly connected to the upper fixed plate; the first cylinder is configured to drive the middle fixed plate to move closer to or away from the lower fixed plate based on the first piston rod; The second cylinder barrel of the second cylinder is fixedly connected to the middle fixed plate; the second cylinder is configured to drive the first connecting member to move closer to or away from the lower fixed plate based on the second piston rod.

5. The device according to claim 4, characterized in that The device further comprises: a plurality of guide shafts; One end of the guide shaft is fixedly connected to a side of the upper fixing plate close to the lower fixing plate, and the other end of the guide shaft is fixedly connected to a side of the lower fixing plate close to the upper fixing plate; The guide shaft also passes through the middle fixing plate. The middle fixing plate is configured to move along the guide shaft toward or away from the lower fixing plate under the drive of the first driving unit.

6. The device according to claim 1, characterized in that The device further comprises: an internal vacuum pump unit; The air inlet of the internal vacuum pump unit is communicated with the interior of the tested bellows; the internal vacuum pump unit is configured to maintain the interior of the tested bellows at a specified internal vacuum degree during the life test.

7. The device according to claim 1, characterized in that The device further comprises: a heating unit; The heating unit is disposed around the test cavity; the heating unit is configured to maintain the interior of the test cavity at a specified temperature during the life test process.

8. The device according to any one of claims 1 to 7, characterized in that: The device further comprises: an electric control box, an electric control indicating unit and an electric control display unit; The electric control box is communicatively connected to the electric control indicating unit and the electric control display unit respectively; the electric control box is configured to obtain the test time, test temperature or test vacuum degree of the tested bellows; The electric control indicating unit is configured to indicate the working status of the electric control box; The electronically controlled display unit is configured to display the test time, the test temperature or the test vacuum degree.

9. A bellows life test device, characterized in that: The device comprises: a bellows life test device according to any one of claims 1 to 8, a tooling platform, and a plurality of platform wheels; The bellows life test device is arranged on the tooling platform, and the plurality of platform wheels are configured to be evenly arranged below the tooling platform.

10. The device according to claim 9, characterized in that in, The platform wheel includes a Forma wheel; the device also includes: an anti-vibration pad; The shock-absorbing pad is arranged on the tooling platform, and the bellows life test device is arranged on the shock-absorbing pad.

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