Durability testing device

Abstract

The utility model discloses a durability testing device, and relates to the technical field of supporting rod testing equipment. The fixing assembly is arranged on the testing platform, and the fixing assembly is used for fixing the fixed end of the electric supporting rod; the testing assembly comprises a positioning seat, a counterweight component, a force transmission structure and a detection piece, the positioning seat is slidably arranged on the testing platform and used for fixing the free end of the electric supporting rod, and the counterweight component is connected with the positioning seat through the force transmission structure, so that the positioning seat has the trend of moving towards the fixing assembly, and the detection piece is used for detecting the free end of the electric supporting rod. And the detection piece is used for detecting the telescopic speed of the electric supporting rod. The device can effectively simulate the load condition on an electric stay bar real-loading vehicle, carries out the durability experiment on the electric stay bar under the load condition through multiple times of reciprocating starting, is simple in structure, and is convenient to test.

Description

Technical Field

[0001] The present application relates to the technical field of support rod testing equipment, and in particular to a durability testing device. Background Art

[0002] With the increasing adoption of electrification and automation in vehicles, tailgate struts are also evolving to automatically open and close. Electric struts are a core component that enables automatic tailgate functionality. Therefore, after manufacturing, electric struts are typically subjected to durability testing. Conventional practice involves simulating the strut's opening and closing cycles and recording the number of times it operates normally before failure. However, some OEMs require more stringent testing, requiring not only testing failure parameters under operating conditions but also testing the failure modes of the electric strut under varying loads. Consequently, a new test setup for electric strut durability testing under extreme conditions is required. Utility Model Content

[0003] The present application aims to solve one of the above-mentioned technical problems in the prior art. To this end, an embodiment of the present application provides a durability testing device.

[0004] According to an embodiment of the present application, a durability testing device is provided, comprising a test platform; a fixing assembly, arranged on the test platform, the fixing assembly being used to fix the fixed end of the electric support pole; a test assembly, comprising a positioning seat, a counterweight component, a force transmission structure and a detection component, the positioning seat being slidably arranged on the test platform, the positioning seat being used to fix the free end of the electric support pole, the counterweight component being connected to the positioning seat via a force transmission structure so that the positioning seat has a tendency to move toward the fixing assembly, and the detection component being used to detect the extension and retraction speed of the electric support pole.

[0005] The above-mentioned durability testing device has at least the following beneficial effects: when conducting a durability test on an electric support rod, the fixed end of the electric support rod is fixed by a fixing assembly, and the free end of the electric support rod is fixed by a positioning seat. The weight of the counterweight component is adjusted according to the test requirements, and the counterweight component is connected to the positioning seat through a force transmission structure, so that the weight of the counterweight component can act on the free end of the electric support rod along the axial direction of the electric support rod, simulating the load state on the electric support rod installed on the vehicle. The electric support rod is started under the load state, and the positioning seat reciprocates under the telescopic action of the free end. The telescopic speed of the electric support rod is detected by the detection component, and whether the telescopic speed of the electric support rod is abnormal is detected to determine whether the electric support rod has a failure problem. If different loads need to be tested subsequently, the weight of the counterweight component can be adjusted according to the requirements. The present application can effectively simulate the load conditions on the electric support rod installed on the vehicle, and through multiple reciprocating starts, the durability test of the electric support rod is carried out under load. It has a simple structure and is convenient to test.

[0006] According to the durability testing device described in an embodiment of the present application, the force transmission structure includes a flexible connector and a force transmission wheel. The force transmission wheel is rotatably arranged on the test platform. One end of the flexible connector is fixedly connected to the positioning seat, and the other end is wrapped around the force transmission wheel and connected to the counterweight component so that the counterweight component is suspended below the test platform.

[0007] According to the durability testing device described in the embodiment of the present application, the portion of the flexible connector between the force transmission wheel and the positioning seat is parallel to the sliding direction of the positioning seat.

[0008] According to the durability testing device described in the embodiment of the present application, the flexible connecting member is a chain.

[0009] According to the durability testing device described in the embodiment of the present application, the force transmission wheel is a sprocket.

[0010] According to the durability testing device described in the embodiment of the present application, the detection component is an encoder, and the connecting shaft of the encoder is connected to the force transmission wheel to test the rotational speed of the force transmission wheel.

[0011] According to the durability testing device described in the embodiment of the present application, the fixing assembly includes at least two positioning members, which are arranged at intervals along the sliding direction of the positioning seat, and the positioning member includes a positioning member body and a clamping portion, and the positioning member body has a card slot for positioning the fixed end of the electric support rod, and the clamping portion is connected to the positioning member body by a threaded connection so that the clamping portion can press the fixed end of the electric support rod into the card slot.

[0012] According to the durability testing device described in the embodiment of the present application, the position of the positioning member on the test platform is adjustable along the sliding direction of the positioning seat.

[0013] According to the durability testing device described in the embodiment of the present application, the positioning member is fixed to the test platform by bolts, and the test platform has multiple groups of screw holes arranged at intervals along the sliding direction of the positioning seat.

[0014] According to the durability testing device described in the embodiment of the present application, the counterweight component includes a counterweight plate and at least one counterweight weight, the counterweight plate is connected to the flexible connecting member, and the counterweight weight is stacked on the counterweight plate.

[0015] Additional aspects and advantages of the present application will be given in part in the description below, and in part will become obvious from the description below, or will be learned through practice of the present application. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] The present application is further described below with reference to the accompanying drawings and embodiments;

[0017] Figure 1This is a schematic diagram of the structure of the durability testing device of the embodiment of the present application. Figure 1 ;

[0018] Figure 2 This is a schematic diagram of the structure of the durability testing device of the embodiment of the present application. Figure 2 ;

[0019] Figure 3 This is a schematic diagram of the structure of the durability testing device of the embodiment of the present application. Figure 3 ;

[0020] Figure 4 yes Figure 3 Cross-sectional view along AA direction.

[0021] Figure markings: support frame 101, test platform 102, screw hole 1021, positioning member 110, clamping part 111, positioning seat 130, clamping block 131, slide plate 140, flexible connecting member 150, detection member 160, counterweight plate 170, counterweight weight 171, force transmission wheel 180, second sensor 191, first sensor 192, fixed end 210 of electric support rod, free end 220 of electric support rod. DETAILED DESCRIPTION

[0022] This section will describe the specific embodiments of the present application in detail. The preferred embodiments of the present application are shown in the accompanying drawings. The purpose of the accompanying drawings is to supplement the description of the text part of the specification with graphics, so that people can intuitively and vividly understand each technical feature and overall technical solution of the present application, but it cannot be understood as a limitation on the scope of protection of the present application.

[0023] In the description of this application, it should be understood that descriptions involving orientations, such as up, down, front, back, left, right, etc., indicating orientations or positional relationships, are based on the orientations or positional relationships shown in the accompanying drawings. They are only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation. Therefore, they cannot be understood as limitations on this application.

[0024] In the description of this application, "several" means one or more, "many" means more than two, "greater than," "less than," and "exceed" are understood to exclude the number itself, while "above," "below," and "within" are understood to include the number itself. The terms "first" and "second" are used solely to distinguish technical features and are not to be construed as indicating or implying relative importance, or as implicitly specifying the number or order of the technical features indicated.

[0025] In the description of this application, unless otherwise clearly defined, terms such as setting, installing, and connecting should be understood in a broad sense, and technicians in the relevant technical field can reasonably determine the specific meanings of the above terms in this application based on the specific content of the technical solution.

[0026] An electric tailgate strut is a device used to automatically open and close a vehicle's tailgate. It primarily consists of a motor, connecting rod, spring, and clutch. The motor receives signals from the control unit and drives the connecting rod, thereby opening and closing the tailgate. The spring and clutch ensure the tailgate remains open and closed even in the event of a motor failure.

[0027] The electric strut is a key moving part of the vehicle body. Its shortcomings in flexibility, strength, sealing, etc. are easily exposed. Durability tests are needed to obtain its limit data to improve part design and verify the rationality of the design.

[0028] Reference Figures 1 to 4 The durability testing device of the embodiment of the present application includes a testing platform 102, a fixing component and a testing component.

[0029] A support frame 101 is provided below the test platform 102 so that the test platform 102 reaches a height that is convenient for operators to operate.

[0030] The fixing assembly is disposed on the test platform 102 , and is mainly used to fix the fixing end 210 of the electric support pole.

[0031] The test assembly includes a positioning seat 130, a counterweight component, a force transmission structure and a detection component 160. The positioning seat 130 is slidably set on the test platform 102. The positioning seat 130 can move back and forth toward the fixed assembly. The positioning seat 130 is used to fix the free end 220 of the electric support rod. The counterweight component is connected to the positioning seat 130 through the force transmission structure so that the positioning seat 130 has a tendency to move toward the fixed assembly. The detection component 160 is used to detect the extension and retraction speed of the electric support rod.

[0032] Specifically, during the durability test of the electric support pole, the fixed end 210 of the electric support pole is fixed by a fixing assembly, and the free end 220 of the electric support pole is fixed by a positioning seat 130. The weight of the counterweight component is adjusted according to the test requirements, and the counterweight component is connected to the positioning seat 130 through a force transmission structure, so that the weight of the counterweight component can act on the free end 220 of the electric support pole along the axial direction of the electric support pole, simulating the load state of the electric support pole on the vehicle where the electric support pole is actually installed. At this time, the electric support pole is in a loaded state.

[0033] After the simulated environment for the electric support pole is prepared, the pole is activated under load. If required, the ambient temperature limit for the test environment can be set. During the test, the positioning base 130 reciprocates as the free end extends and retracts. The detection member 160 monitors the extension and retraction speed of the pole. By detecting abnormalities in the extension and retraction speed, the failure of the pole can be determined. If an abnormality occurs during the test, the extension and retraction speed of the pole will change, which can be effectively monitored by the detection member 160. The detection member 160 then outputs an abnormality signal to the control system, indicating the abnormality and testing the structure. This makes the test process convenient and accurate.

[0034] If you need to test different loads later, you can adjust the weight of the counterweight component according to your needs.

[0035] The durability testing device of the present application has a simple structure and is convenient for testing. It can effectively simulate the load conditions on the vehicle on which the electric support rod is installed. Through multiple reciprocating starts, the durability test of the electric support rod is carried out under load.

[0036] Among them, the fixing assembly includes at least two positioning members 110, which are arranged at intervals along the sliding direction of the positioning seat 130. The positioning member 110 includes a positioning member 110 body and a clamping portion 111. The positioning member 110 body has a card slot for positioning the fixed end 210 of the electric support rod. The clamping portion 111 is connected to the positioning member 110 body by a threaded connection so that the clamping portion 111 can press the fixed end 210 of the electric support rod into the card slot.

[0037] In order to prevent the pressing portion 111 from damaging the electric support rod, a buffer layer is provided on one side of the pressing portion 111 for pressing against the electric support rod. The buffer layer can be made of rubber.

[0038] In some specific embodiments, the position of the positioning member 110 on the test platform 102 is adjustable along the sliding direction of the positioning seat 130. This allows the positioning member 110 to be adjusted according to different electrical support poles, thereby better securing the fixed end 210 of the electrical support pole. This allows for the fixing of electrical support poles of different models and lengths, providing strong applicability.

[0039] Furthermore, the positioning member 110 is fixed to the test platform 102 via bolts. The test platform 102 has multiple sets of screw holes 1021 arranged at intervals along the sliding direction of the positioning seat 130. By fixing the positioning member 110 in different screw holes 1021, the position of the positioning member 110 on the test platform 102 can be adjusted. This allows the position of the positioning member 110 fixed to the test platform 102 to be adjusted according to different electrical support poles.

[0040] In some embodiments, the test platform 102 also includes a linear guide structure and a slide 140. There are two groups of linear guide structures, and the two groups of linear guide structures are arranged in parallel. The two ends of the slide 140 are respectively fixed on the sliders of the two groups of linear guide structures, and the positioning seat 130 is fixed on the slide 140 so that the positioning seat 130 can slide.

[0041] Among them, the positioning seat 130 has a positioning groove for positioning the free end 220 of the electric support rod. A clamping block 131 is set on the top of the positioning seat 130. The clamping block 131 is fixedly connected to the positioning seat 130 by screws. After the free end 220 of the electric support rod is placed in the positioning groove, the free end 220 of the electric support rod is pressed against the positioning seat 130 by the clamping block 131.

[0042] In some embodiments, in order to prevent the pressing portion 111 from damaging the electric support rod, a buffer layer is provided on one side of the pressing block 131 for pressing against the electric support rod. The buffer layer may be made of rubber.

[0043] In some specific embodiments, the force transmission structure includes a flexible connector 150 and a force transmission wheel 180. The force transmission wheel 180 is rotatably mounted on the test platform 102. One end of the flexible connector 150 is fixedly connected to the positioning seat 130, and the other end is wound around the force transmission wheel 180 and connected to a counterweight component, so that the counterweight component is suspended below the test platform 102. The weight of the counterweight component itself provides the load acting on the free end 220 of the electric support rod, making the simulation test more realistic and effective.

[0044] Specifically, such as Figure 4 As shown, the test platform is provided with a rotating shaft, the force transmission wheel 180 is fixed to the rotating shaft, one end of the flexible connector 150 is fixedly connected to the middle of the positioning seat 130, and the other end is wrapped around the force transmission wheel 180 and passes through the test platform 102 to suspend the counterweight component.

[0045] In some embodiments, the portion of the flexible connector 150 between the force transmission wheel 180 and the positioning seat 130 is parallel to the sliding direction of the positioning seat 130 to make the force transmission more efficient.

[0046] In the embodiment of the present application, the flexible connecting member 150 is a chain, and correspondingly, the force transmission wheel 180 is a sprocket. In other embodiments, the flexible connecting member 150 may also be a synchronous belt, and the force transmission wheel 180 may be a synchronous wheel.

[0047] In some embodiments, the detection member 160 is an encoder, and the encoder's connecting shaft is connected to the force transmission wheel 180 to test the rotation speed of the force transmission wheel 180. Specifically, the encoder's connecting shaft is fixedly connected to the rotating shaft, and the encoder monitors the rotation angle of the force transmission wheel 180 to measure whether the extension and retraction of the electric support rod meets the standard.

[0048] An encoder is a device that compiles and converts signals or data into a signal format that can be used for communication, transmission, and storage. In this embodiment, the encoder converts the angular displacement of a rotating shaft into an electrical signal, which is then converted into counting pulses. The number of pulses represents the magnitude of the displacement. The control system detects the number of pulses transmitted by the encoder to determine whether the electric support rod has failed.

[0049] In some embodiments, the test platform 102 is further provided with a first sensor 192 and a second sensor 191. A detection plate is provided on the slide 140. The detection infrared rays emitted by the first and second sensors 192, 191 are within the motion path of the detection plate. The detection plate cooperates with the first and second sensors 192, 191 to detect the telescopic position of the electric support rod. The first sensor 192 is used to detect whether the free end 220 of the electric support rod is in the extended position, and the second sensor 191 is used to detect whether the free end 220 of the electric support rod is in the retracted position. This ensures that the electric support rod is in a fully extended or retracted state, thereby guaranteeing the authenticity and effectiveness of the experiment.

[0050] In some embodiments, the counterweight component includes a counterweight plate 170 and at least one counterweight 171. The counterweight plate 170 is connected to the flexible connector 150, and the counterweight 171 is stacked on the counterweight plate 170. The counterweight 171 has various weights, and the number or total weight of the counterweights 171 can be increased or decreased according to the actual load requirements of the electric support pole.

[0051] The embodiments of the present application are described in detail above in conjunction with the accompanying drawings, but the present application is not limited to the above embodiments. Various changes can be made within the scope of knowledge possessed by ordinary technicians in the technical field without departing from the purpose of the present application.

Claims

1. A durability testing device, characterized in that: include test platform; A fixing assembly is provided on the test platform, and is used to fix the fixed end of the electric support pole; The test assembly includes a positioning seat, a counterweight component, a force transmission structure and a detection component. The positioning seat is slidably set on the test platform. The positioning seat is used to fix the free end of the electric support rod. The counterweight component is connected to the positioning seat through the force transmission structure so that the positioning seat has a tendency to move toward the fixed assembly. The detection component is used to detect the extension and retraction speed of the electric support rod.

2. The durability testing device according to claim 1, characterized in that: The force transmission structure includes a flexible connector and a force transmission wheel. The force transmission wheel is rotatably arranged on the test platform. One end of the flexible connector is fixedly connected to the positioning seat, and the other end is wrapped around the force transmission wheel and connected to the counterweight component so that the counterweight component is suspended below the test platform.

3. The durability testing device according to claim 2, wherein: The portion of the flexible connection member between the force transmission wheel and the positioning seat is parallel to the sliding direction of the positioning seat.

4. The durability testing device according to claim 2 or 3, characterized in that: The flexible connecting piece is a chain.

5. The durability testing device according to claim 4, characterized in that: The force transmission wheel is a sprocket.

6. The durability testing device according to claim 2, characterized in that: The detection component is an encoder, and the connecting shaft of the encoder is connected to the force transmission wheel to test the rotation speed of the force transmission wheel.

7. The durability testing device according to claim 1, characterized in that: The fixing assembly includes at least two positioning members, which are arranged at intervals along the sliding direction of the positioning seat. The positioning member includes a positioning member body and a clamping part. The positioning member body has a slot for positioning the fixed end of the electric support rod. The clamping part is connected to the positioning member body by a threaded connection so that the clamping part can press the fixed end of the electric support rod into the slot.

8. The durability testing device according to claim 7, characterized in that: The position of the positioning member on the test platform is adjustable along the sliding direction of the positioning seat.

9. The durability testing device according to claim 8, characterized in that: The positioning member is fixed to the test platform by means of bolts, and the test platform is provided with a plurality of sets of screw holes at intervals along the sliding direction of the positioning seat.

10. The durability testing device according to claim 2, characterized in that: The counterweight component includes a counterweight plate and at least one counterweight weight, the counterweight plate is connected to the flexible connecting member, and the counterweight weight is stacked on the counterweight plate.

Images