Durability test device

Abstract

A durability test device, which comprises a load simulation device, a driving member, a driving device and a torque sensor. The load simulation device can place a test part and apply a load to the test part; the driving member is used to connect with the test part; the driving device is used to provide torque to the driving member to drive the test part to expand and contract; the torque sensor is arranged between the driving member and the driving device and is used to measure the torque when driving the test part to expand and contract. The present invention can conduct tests under the condition that the test part bears a load, and can evaluate the life of the test part according to the measured torque data and the number of expansion and contraction times of the test part. The present invention is also provided with a moving platform, which can adjust the position of the driving member to adapt to test parts of different sizes. The durability test device of the present invention is not only applicable to unidirectional expansion and contraction components, but also applicable to bidirectional expansion and contraction components. It is simple and convenient to operate, has strong practicability and is suitable for being vigorously promoted.

Description

Technical Field

[0001] The present invention relates to the field of mechanical testing, and particularly to a durability test device.

Background Art

[0002] A bi-directional telescopic locking device is a device applied to an aircraft. The telescopic shafts at both ends can be telescopically extended and retracted synchronously. It can be used for locking connections between connecting components whose states need to be changed. For example, it is used on folding wings. When operating the bi-directional telescopic locking device to extend and retract, it is usually through applying a driving torque to make it actively extend and retract.

[0003] For components applied to an aircraft, they usually need to undergo strict tests to ensure that the products meet safety requirements. For the bi-directional telescopic locking device, since it is a device for locking connections, during its actual application, its telescopic shaft usually bears a large pressure load. When the pressure load is very large, it is necessary to test whether the bi-directional telescopic locking device can operate normally for extension and retraction and its durability (life). Therefore, a test device is needed to test the durability performance of the bi-directional telescopic locking device.

Summary of the Invention

[0004] The present invention aims to solve the above problems and provides a durability test device.

[0005] To solve the above problems, the present invention provides a durability test device, which is characterized in that it includes a load simulation device, a driving member, a driving device, and a torque sensor. The load simulation device can place the test part and apply a load to the test part; the driving member is used to connect with the test part; the driving device is used to provide torque to the driving member to drive the test part to extend and retract; the torque sensor is arranged between the driving member and the driving device and is used to measure the torque when driving the test part to extend and retract.

[0006] Furthermore, it further includes a control module. The control module is connected to the driving device and the torque sensor. During the test, the driving device drives the test part to reciprocally extend and retract under the load applied by the load simulation device under the control of the control module. The control module evaluates the life of the test part according to the torque data measured by the torque sensor and the number of times the test part extends and retracts.

[0007] Furthermore, it further includes a moving platform. The moving platform is used to carry the driving member, the driving device, and the torque sensor. The moving platform can move along the first direction X and the second direction Y.

[0008] Further, the mobile platform includes a fixing plate, a first sliding plate, and a second sliding plate. A first limiting portion extending along a first direction X is provided on the fixing plate; a second limiting portion and a third limiting portion are provided on the first sliding plate. The second limiting portion is inlaid with the first limiting portion, and the first sliding plate can move relative to the fixing plate along the first direction X; the third limiting portion extends along a second direction Y; a fourth limiting portion is provided on the second sliding plate. The fourth limiting portion is inlaid with the third limiting portion, and the second sliding plate can move relative to the first sliding plate along the second direction Y.

[0009] Further, the first direction X is perpendicular to the second direction Y; the driving member, the driving device, and the torque sensor are fixedly arranged on the second sliding plate.

[0010] Further, a first support member, a second support member, and a third support member are fixedly connected to the second sliding plate. A first mounting shaft hole for sleeving the driving member is provided on the first support member, and a second mounting shaft hole is provided on the third support member; the driving device is fixedly connected to the third support member, and an output shaft of the driving device passes through the second mounting shaft hole and is connected to the torque sensor. The torque sensor is supported on the second support member, and the other end of the torque sensor opposite to the driving device is fixedly connected to the driving member; the driving member is sleeved in the first mounting shaft hole of the first support member and can rotate in the first mounting shaft hole.

[0011] Further, the first limiting portion protrudes from the surface of the fixing plate. First steps are formed between the opposite two sides of the first limiting portion and the surface of the fixing plate respectively, and the first steps extend along the first direction X; the second limiting portion is a groove with an opening direction facing the first limiting portion; the third limiting portion protrudes from the surface of the first sliding plate. Second steps are formed between the opposite two sides of the third limiting portion and the surface of the first sliding plate respectively, and the second steps extend along the second direction Y; the fourth limiting portion is a groove with an opening direction facing the third limiting portion.

[0012] Further, the load simulation device includes a pressure module, a lever assembly, a counterweight module, a tension module, and a pressure sensor. The pressure module is provided with a shaft hole for the end of the test part to pass through. The lever assembly is arranged on the pressure module, and its two ends respectively extend out of the pressure module to form a first free end and a second free end; the counterweight module is arranged at the first free end of the lever assembly; the tension module is movably connected to the second free end of the lever assembly; the pressure sensor is arranged in the pressure module and is used to measure the pressure value applied by the lever assembly to the pressure module.

[0013] Furthermore, the pressure module includes a pressure block, a pressure rotating block, a support block and a pressure block, the pressure rotating block is rotatably connected to the pressure block, and a first through groove for accommodating the lever assembly is provided on the pressure rotating block; the support block is provided with a first axial hole for the end of the test part to pass through; the pressure block is arranged between the support block and the pressure block and is movably connected to the support block, and a second axial hole for the end of the test part to pass through is provided on the pressure block, and the axial direction of the second axial hole is parallel to the axial direction of the first axial hole.

[0014] Furthermore, the tension module includes a movably connected support seat and a tension rotating block, the tension rotating block is rotatably connected to the support seat, a second through groove for the lever assembly to pass through is provided on the tension rotating block, and the second free end of the lever assembly is arranged in the second through groove.

[0015] The beneficial contribution of the present invention is that it effectively solves the above-mentioned problems. The durability test device of the present invention applies a load to the test part by setting a load simulation device to simulate the actual load condition of the test part. In addition, the present invention drives the test part to perform telescopic movement by setting a driving member and a driving device, and measures the torque during telescopic movement by setting a torque sensor, so that the test can be carried out under the condition that the test part is subjected to load, and then the life of the test part can be evaluated according to the measured torque data and the number of telescopic times of the test part. In addition, the present invention is also provided with a mobile platform, which can adjust the position of the driving member to adapt to test parts of different sizes. The durability test device of the present invention is not only suitable for one-way telescopic components, but also for two-way telescopic components. It is simple and convenient to operate, and can be adapted to test parts of different sizes. It has strong practicality and should be vigorously promoted.

Brief Description of the Drawings

[0016] Figure 1 It is a schematic diagram of the overall structure of the present invention.

[0017] Figure 2 is a schematic diagram of the load simulation device.

[0018] Figure 3 It is a schematic diagram of the structure of the pressure module.

[0019] Figure 4 yes Figure 3 Schematic diagram of the decomposition.

[0020] Figure 5 It is a structural diagram of the tension module.

[0021] Figure 6 yes Figure 5 Schematic diagram of the decomposition.

[0022] Figure 7It is an assembly schematic diagram of a mobile platform, a driving member, a driving device, and a torque sensor.

[0023] Figure 8 is Figure 7 exploded schematic diagram of.

[0024] Among them, the load simulation device 10, the tension module 11, the support base 111, the tension rotating block 112, the second through groove 1121, the lever assembly 12, the first free end 121, the second free end 122, the counterweight module 13, the pressure module 14, the pressing block 141, the pressure rotating block 142, the first through groove 1421, the support block 143, the first shaft hole 1431, the pressing block 144, the second shaft hole 1441, the pressure sensor 15, the driving member 20, the hexagon socket groove 21, the connecting shaft portion 22,, the driving device 30, the torque sensor 40, the control module 50, the test part 60, the mobile platform 70, the fixing plate 71, the first limiting portion 711, the first step 712, the first sliding plate 72, the second limiting portion 721, the third limiting portion 722, the second step 723, the second sliding plate 73, the fourth limiting portion 731,, the first support member 81, the second support member 82, the third support member 83, the base platform 90, the first direction X, the second direction Y.

Detailed implementation manners

[0025] The following embodiments are further explanations and supplements to the present invention and do not constitute any limitation to the present invention.

[0026] As Figures 1 to 8 shown, the durability test device of the present invention includes a load simulation device 10, a driving member 20, a driving device 30, a torque sensor 40, and a control module 50. The load simulation device 10 is used to apply a load to the test part 60 to simulate the stress condition of the test part 60 during actual operation. The driving device 30 is used to provide power to drive the driving member 20, and further drive the test part 60 to perform telescopic activities. The torque sensor 40 is used to measure the torque when driving the test part 60 to expand and contract. The control module 50 is used to control the driving device 30, and is used to evaluate the life of the test part 60 according to the measured torque data and the number of telescopic times of the test part 60. Further, it may also include a mobile platform 70, which is used to adjust the positions of the driving device 30 and the driving member 20 to adapt to the test requirements of test parts 60 of different sizes.

[0027] As Figures 1 to 2 shown, the load simulation device 10 is provided with a platform for placing the test part 60. When the test part 60 is placed on the load simulation device 10 according to the specified requirements, the load simulation device 10 can apply a load to the test part 60 and can adjust the magnitude of the load applied to the test part 60.

[0028] In this embodiment, as Figures 1 to 6 shown, the load simulation device 10 includes a tensile force module 11, a lever assembly 12, a counterweight module 13, a pressure module 14, and a pressure sensor 15. The non-end portion of the lever assembly 12 is disposed on the pressure module 14, and both ends of the lever assembly 12 are respectively connected to the counterweight module 13 and the tensile force module 11, thereby forming a lever structure; the counterweight module 13 is used to adjust the magnitude of the pressure, and its counterweight can be set according to the test requirements, and it is disposed at the first free end 121 of the lever assembly 12. The pressure module 14 is used to transmit the pressure to the test part 60, thereby applying a load to the test part 60 to simulate the situation when the test part 60 undergoes telescopic movement under the action of the load. The pressure sensor 15 is used to measure the applied pressure;

[0029] As Figures 1 to 4 shown, the pressure module 14 is connected to the non-end portion of the lever assembly 12, and it includes a pressing block 141, a pressure rotating block 142, a supporting block 143, and a pressing block 144.

[0030] As Figures 1 to 4 shown, the pressing block 141 is used to support and connect the pressure rotating block 142 and transmit the pressure downward.

[0031] As Figures 1 to 4 shown, the pressure rotating block 142 is rotatably connected to the pressing block 141, and it is used to support the non-end portion of the lever assembly 12 to form a lever structure. A first through groove 1421 for accommodating the lever assembly 12 is provided on the pressure rotating block 142, and the shape of the first through groove 1421 matches the shape of the lever assembly 12. In this embodiment, the lever assembly 12 is in the shape of a round rod, and the first through groove 1421 is an arc-shaped groove.

[0032] As Figures 1 to 4 shown, the supporting block 143 is used to support the pressure module 14, and it is provided with a first shaft hole 1431 through which the end portion of the test part 60 passes. The axial direction of the first shaft hole 1431 is perpendicular to the first through groove 1421, that is, perpendicular to the lever assembly 12. The shape of the first shaft hole 1431 matches the shape of the end portion of the test part 60, that is, the shape of the telescopic shaft. In this embodiment, it is a round hole.

[0033] As Figures 1 to 4As shown in the figure, the pressure - applying block 144 is disposed between the support block 143 and the pressing block 141, and is used to directly apply pressure to the test part 60. The pressure - applying block 144 is a movable part and is movably connected to the support block 143. In this embodiment, the pressure - applying block 144 is lapped on the support block 143. A second shaft hole 1441 through which the end of the test part 60 passes is provided on the pressure - applying block 144. The axial direction of the second shaft hole 1441 is perpendicular to the first through - slot 1421, that is, perpendicular to the lever assembly 12. The shape of the second shaft hole 1441 matches the shape of the end of the test part 60. In this embodiment, it is a circular hole.

[0034] As Figures 1 to 4 shown in the figure, the positions of the first shaft hole 1431 and the second shaft hole 1441 basically correspond to each other, and the axial direction of the first shaft hole 1431 is parallel to the axial direction of the first shaft hole 1431. During the test, the axis of the first shaft hole 1431 can coincide with the axis of the second shaft hole 1441 or have a slight offset. Whether the axes of the first shaft hole 1431 and the second shaft hole 1441 completely coincide is related to the pressure applied to the pressure - applying block 144.

[0035] As Figures 1 to 4 shown in the figure, the first shaft hole 1431 and the second shaft hole 1441 form the shaft hole on the pressure module 14 through which the end of the test part 60 passes.

[0036] As Figures 1 to 4 shown in the figure, the pressing block 141, the pressure - rotating block 142, the pressure - applying block 144, and the support block 143 can form the pressure module 14 of this embodiment. The pressure - rotating block 142 supports the non - end part of the lever assembly 12, and the pressure it receives from the lever assembly 12 can be transmitted to the pressure - applying block 144 through the pressing block 141, and then can be applied to the test part 60 through the pressure - applying block 144.

[0037] As Figures 1 to 4 shown in the figure, the pressure sensor 15 is disposed in the pressure module 14 and is used to measure the pressure load applied to the test part 60. In this embodiment, the pressure sensor 15 is disposed between the pressing block 141 and the pressure - applying block 144, and can measure the pressure applied to the pressure - applying block 144 in real time.

[0038] As Figure 1 、 Figure 2As shown, the lever assembly 12 is in the shape of a long rod, which is used to form a lever structure to increase the upper limit of the rated load by the lever principle. The lever assembly 12 is disposed on the pressure module 14, and its two ends respectively extend out of the pressure module 14 to form a first free end 121 and a second free end 122. The first free end 121 is used to connect the counterweight module 13, and the second free end 122 is used to connect with the tension module 11, thereby forming a lever structure.

[0039] As Figure 1 , Figure 2 shown, a non-end partial position of the lever assembly 12 is embedded in the first through groove 1421 of the pressure rotating block 142. The contact part between the lever assembly 12 and the first through groove 1421 is called the fulcrum of the lever assembly 12. The fulcrum of the lever assembly 12 is close to the second free end 122 and far from the first free end 121, and its specific length ratio can be set as needed, and this embodiment does not limit it.

[0040] As Figure 1 , Figure 2 shown, the counterweight module 13 is suspended from the first free end 121 of the lever assembly 12. The weight of the counterweight module 13 can be set as needed. For example, the weight of the counterweight module 13 can be increased or decreased to adjust the load applied to the test part 60. In this embodiment, the counterweight module 13 is suspended from the first free end 121 of the lever assembly 12 by a hook.

[0041] As Figure 1 , Figure 2 , Figure 5 , Figure 6 shown, the tension module 11 acts on the second free end 122 of the lever assembly 12. The tension module 11 includes a support seat 111 and a tension rotating block 112 which are movably connected. The support seat 111 is fixedly arranged, and the tension rotating block 112 is rotatably connected to the support seat 111. A second through groove 1121 for accommodating the lever assembly 12 is provided on the tension rotating block 112, and the second free end 122 of the lever assembly 12 is disposed in the second through groove 1121, so that a tension can be applied to the second free end 122 of the lever assembly 12 through the tension module 11.

[0042] Both the tension rotating block 112 and the pressure rotating block 142 can rotate. Therefore, they can provide a movable space for the inclination of the lever assembly 12; when the counterweight module 13 is increased or decreased, the lever assembly 12 can drive the pressure rotating block 142 and the tension rotating block 112 to rotate adaptively to meet the inclination of the lever assembly 12.

[0043] During the test, as Figure 2As shown, the end of the test part 60 - the telescopic shaft is placed in the first shaft hole 1431 and the second shaft hole 1441 of the load simulation device 10. Then, a suitable counterweight module 13 is set on the first free end 121 of the lever assembly 12. At this time, the fulcrum of the lever assembly 12 presses the pressure module 14, and the pressure module 14 transmits the pressure downward to apply the load to the telescopic shaft of the test part 60, so as to simulate the stress condition of the test part 60 during actual operation, and thus facilitate the test of the durability of the test part 60 when it undergoes telescopic movement under the load state.

[0044] The driving device 30 is used to provide driving force. In this embodiment, a well-known driving motor, such as a servo motor, can be selected.

[0045] As Figure 1 、 Figure 7 、 Figure 8 As shown, the driving member 20 is used to connect with the test part 60. One end of the driving member 20 has a shape matching the locking pin member of the test part 60, and it can be detachably and fixedly connected to the test part 60. The other end of the driving member 20 is connected to the driving device 30 through a torque sensor 40, and it can be driven by the driving device 30 to rotate, so as to drive the test part 60 to perform telescopic movement. In this embodiment, the driving member 20 is cylindrical, and one end is provided with an internal hexagonal groove 21, which extends along the axial direction of the driving member 20 and is coaxial with the driving member 20; the driving member 20 can be connected to the test part 60 through the internal hexagonal groove 21; the other end of the driving member 20 opposite to the internal hexagonal groove 21 is provided with a cylindrical connecting shaft portion 22, the connecting shaft portion 22 is coaxially arranged with the driving member 20, and the outer diameter of the connecting shaft portion 22 is smaller than the outer diameter of the driving member 20.

[0046] As Figure 1 、 Figure 7 、 Figure 8 As shown, the torque sensor 40 is arranged between the driving member 20 and the driving device 30, and it is used to measure torque. One end of the torque sensor 40 is fixedly connected to the output shaft of the driving device 30, and the other end is fixedly connected to the connecting shaft portion 22 of the driving member 20. In this embodiment, the torque sensor 40, the driving member 20 and the driving device 30 are coaxially connected, and they are fixedly connected through a well-known coupling.

[0047] As Figure 1As shown, the control module 50 is connected to the driving device 30 and the torque sensor 40. The functions of the control module 50 include but are not limited to: sending control commands to the driving device 30 to control the working state of the driving device 30; receiving the torque data collected by the torque sensor 40; counting the number of telescopic times of the test part 60 according to the working state of the driving device 30; and evaluating the life of the test part 60 according to the torque data and the corresponding number of telescopic times. The form of the control module 50 can be set as needed. In this embodiment, the control module 50 is set in the form of an industrial personal computer, which is provided with control buttons for parameter control or parameter adjustment, and is provided with a display screen to display relevant information data.

[0048] As Figure 1 shown, the axes of the driving member 20, the torque sensor 40 and the driving device 30 should be perpendicular to the telescopic movement direction of the test part 60. In other words, the axes of the driving member 20, the torque sensor 40 and the driving device 30 are perpendicular to the direction of the first shaft hole 1431 and the second shaft hole 1441, and parallel to the direction of the lever assembly 12.

[0049] Since the test parts 60 to be tested may have different model sizes, in order to adapt to test parts 60 of different model sizes, the position of the driving member 20 should be adjustable. Therefore, the durability test device of the present invention is also provided with a moving platform 70. As Figure 1 、 Figure 7 、 Figure 8 shown, the moving platform 70 is used to carry the driving member 20, the driving device 30 and the torque sensor 40. The moving platform 70 can move along the first direction X and the second direction Y. Therefore, the position of the driving member 20 can be adjusted along the first direction X and the second direction Y to align and connect test parts 60 of different model sizes.

[0050] As Figure 1 、 Figure 7 、 Figure 8 shown, the moving platform 70 includes a fixed plate 71, a first sliding plate 72 and a second sliding plate 73. The fixed plate 71 is fixedly arranged. The first sliding plate 72 can move relative to the fixed plate 71 along the first direction X. The second sliding plate 73 can move relative to the first sliding plate 72 along the second direction Y. In this embodiment, the first direction X and the second direction Y are perpendicular, wherein the first direction X is parallel to the telescopic direction of the test part 60. The second direction Y is parallel to the axis of the driving member 20.

[0051] As Figure 1 、 Figure 7 、 Figure 8As shown in the figure, to limit the moving direction, a first limiting portion 711 extending along the first direction X is provided on the fixing plate 71, a second limiting portion 721 and a third limiting portion 722 are provided on the first sliding plate 72; a fourth limiting portion 731 is provided on the second sliding plate 73. The second limiting portion 721 is inlaid with the first limiting portion 711, so that the first sliding plate 72 can move relative to the fixing plate 71 along the first direction X; the third limiting portion 722 extends along the second direction Y, and the fourth limiting portion 731 is inlaid with the third limiting portion 722, so that the second sliding plate 73 can move relative to the first sliding plate 72 along the second direction Y.

[0052] As Figure 1 , Figure 7 , Figure 8 shown, in this embodiment, the first limiting portion 711 is integrally formed with the fixing plate 71 and protrudes from the surface of the fixing plate 71. The first limiting portion 711 is in the shape of a plate, its upper surface is flat, and its opposite two sides are respectively located inside the edge of the fixing plate 71 and form a first step 712 with the surface of the fixing plate 71. The first step 712 has a limiting function and can restrict the moving direction of the first sliding plate 72. The cross-section of the first limiting portion 711 is trapezoidal.

[0053] As Figure 1 , Figure 7 , Figure 8 shown, the second limiting portion 721 is a groove with an opening direction facing the first limiting portion 711, its shape matches the shape of the first limiting portion 711, and its cross-section is trapezoidal. The second limiting portion 721 and the first limiting portion 711 form an inlaid structure, so that the first sliding plate 72 and the fixing plate 71 are lapped together and can move back and forth relative to the fixing plate 71 along the first direction X.

[0054] As Figure 1 , Figure 7 , Figure 8 shown, the third limiting portion 722 is fixedly connected or integrally formed with the first sliding plate 72 and protrudes from the surface of the first sliding plate 72. The third limiting portion 722 is in the shape of a plate, its cross-section is trapezoidal, and its opposite two side edges are respectively located inside the edge of the first sliding plate 72 and form a second step 723 with the surface of the first sliding plate 72. The second step 723 is perpendicular to the first step 712. The second step 723 has a limiting function and can restrict the moving direction of the second sliding plate 73.

[0055] As Figure 1 , Figure 7 , Figure 8As shown, the fourth limiting part 731 is a groove with an opening direction facing the third limiting part 722. Its shape matches that of the third limiting part 722, and its cross-section is trapezoidal. The fourth limiting part 731 and the third limiting part 722 form an inlaid structure, so that the second sliding plate 73 and the first sliding plate 72 are lapped together and can move back and forth relative to the first sliding plate 72 along the second direction Y.

[0056] As Figure 1 , Figure 7 , Figure 8 shown, the fixing plate 71, the first sliding plate 72 and the second sliding plate 73 of the moving platform 70 are movably connected. In this embodiment, the first sliding plate 72 and the second sliding plate 73 can be moved by manual adjustment.

[0057] As Figure 1 , Figure 7 , Figure 8 shown, the driving device 30, the driving part 20 and the torque sensor 40 are fixedly arranged on the second sliding plate 73 of the moving platform 70; thus, when adjusting the moving platform 70 along the first direction X or the second direction Y, the driving device 30, the driving part 20 and the torque sensor 40 can be driven to move accordingly, so that the alignment position of the driving part 20 can be conveniently adjusted and it is convenient to connect with the test part 60.

[0058] As Figure 1 , Figure 7 , Figure 8 shown, for the convenience of arranging the driving device 30, the driving part 20 and the torque sensor 40, a first support part 81, a second support part 82 and a third support part 83 are fixedly arranged on the second sliding plate 73. The first support part 81 is used to support and arrange the driving part 20. The second support part 82 is used to support and arrange the torque sensor 40. The third support part 83 is used to support and arrange the driving device 30. The first support part 81, the second support part 82 and the third support part 83 are arranged at intervals.

[0059] As Figure 1 , Figure 7 , Figure 8 shown, a first mounting shaft hole is provided on the first support part 81, and the inner diameter of the first mounting shaft hole should be greater than the outer diameter of the driving part 20. The proximal end part of the driving part 20 is sleeved in the first mounting shaft hole of the first support part 81, and the end part with the inner hexagonal groove 21 extends out of the first mounting shaft hole and faces the test part 60.

[0060] As Figure 1 , Figure 7 , Figure 8As shown, the torque sensor 40 is lapped on the second support member 82. One end thereof is fixedly connected to the connecting shaft portion 22 of the driving member 20, and the other end thereof is fixedly connected to the output shaft of the driving device 30.

[0061] As Figure 1 , Figure 7 , Figure 8 As shown, a second mounting shaft hole is provided on the third support member 83. The inner diameter of the second mounting shaft hole should be larger than the size of the output shaft of the driving device 30. The driving device 30 is fixed on the third support member 83, and the output shaft of the driving device 30 passes through the second mounting shaft hole and is fixedly connected to the torque sensor 40 together.

[0062] As Figure 1 , Figure 2 As shown, to facilitate the setting of the load simulation device 10 and the mobile platform 70, the durability test device further includes a base platform 90.

[0063] The structure of the base platform 90 can be set as needed, which provides a support platform. The load simulation device 10 and the mobile platform 70 are both arranged on the base platform 90.

[0064] The durability test device of the present invention can be used for durability tests on unidirectional telescopic components or bidirectional telescopic components.

[0065] In some embodiments, a set of load simulation devices 10, a set of mobile platforms 70, a driving member 20, a driving device 30, and a torque sensor 40 can be arranged on the base platform 90. Among them, a set of load simulation devices 10 includes a lever assembly 12, a tension module 11, a pressure module 14, and a counterweight module 13. The axis of the driving member 20 deviates from the axis of the lever assembly 12 and is parallel to the axis of the lever assembly 12. At this time, the formed durability test device can be used for testing unidirectional telescopic components. The telescopic shaft of the unidirectional telescopic component is inserted into the shaft hole of the load simulation device 10 and can bear the load to simulate the actual load-bearing situation.

[0066] In some embodiments, such as Figure 1As shown, two sets of load simulation devices 10, a mobile platform 70, a driving member 20, a driving device 30, and a torque sensor 40 can be arranged on the base platform 90. The two sets of load simulation devices 10 are spaced apart, and a telescopic assembly is placed therebetween. Specifically, the pressure modules 14 of each set of load simulation devices 10 are spaced and arranged on the base platform 90. Among them, the support blocks 143 of the pressure modules 14 are fixedly connected to the base platform 90. The shaft holes of the two sets of pressure modules 14 are located on the same straight line for inserting the telescopic shafts at both ends of the test part 60. The distance between the two sets of pressure modules 14 can be set as required and is related to the length dimension of the test part 60. Preferably, it should be able to meet the test requirements of telescopic assemblies of various sizes. A set of lever assemblies 12 are respectively arranged on the two sets of pressure modules 14, and the lever assemblies 12 are respectively movably connected to the pressure rotating blocks 142. A set of counterweight modules 13 are respectively arranged at the first free ends 121 of each lever assembly 12, and the second free ends 122 of each lever assembly 12 respectively interact with the tension modules 11. The mobile platform 70 is located on the side of the tension module 11 opposite to the pressure module 14; the axial directions of the driving member 20, the driving device 30, and the torque sensor 40 are located between the two sets of lever assemblies 12. The resulting durability test device can be used to test unidirectional telescopic assemblies or bidirectional telescopic assemblies; when the test part 60 is an unidirectional telescopic assembly, the telescopic shaft of the unidirectional telescopic assembly can be inserted into the shaft hole of one of the sets of load simulation devices 10; when the test part 60 is a bidirectional telescopic assembly, the telescopic shafts of the bidirectional telescopic assembly can be respectively inserted into the shaft holes of the two sets of load simulation devices 10.

[0067] Thereby, the durability test device of the present invention is formed: as Figure 1As shown, the load simulation device 10 can apply a load to the test part 60; the driving member 20 can be driven by the driving device 30 to drive the test part 60 to perform telescopic movement; the torque sensor 40 can measure the torque when the test part 60 telescopes; the control module 50 can perform control and collect data for evaluation. During the test, the test part 60 is placed on the platform of the load simulation device 10 such that the telescopic shaft of the test part 60 is located within the shaft hole of the load simulation device 10, so that the test device is in a state of bearing a load; the load borne by the test device can be adjusted by adjusting the counterweight module 13; the test part 60 is connected to the driving member 20, and then, when the driving device 30 operates, the driving member 20 will rotate under the action of the driving device 30, thereby driving the test part 60 to perform telescopic movement: the telescopic shaft telescopes in a state of bearing a load. By adjusting the control parameters through the control module 50, the driving device 30 is made to drive the test part 60 to reciprocally telescope, and then the torque data during the driving process is measured by the torque sensor 40; when the torque data exceeds the preset torque value, the number of telescopic times of the test part 60 is counted; then, the durability performance of the test part 60 is evaluated based on the number of telescopic times and the torque data.

[0068] The preset torque value is the torque data when the test part 60 reaches the failure position, which characterizes the life of the test part 60; when the measured torque value exceeds the preset torque value, it is considered that the test part 60 has failed due to damage.

[0069] When it is necessary to replace the telescopic assembly of different size types for testing, the position of the driving member 20 can be adjusted by moving the platform 70 to facilitate connection.

[0070] The durability test device of the present invention is applicable not only to unidirectional telescopic assemblies but also to bidirectional telescopic assemblies. It is simple and convenient to operate, and can be adapted to test parts 60 of different sizes. It has strong practicality and is worthy of being vigorously promoted.

[0071] Although the present invention has been disclosed through the above embodiments, the scope of the present invention is not limited thereto. Without departing from the concept of the present invention, the above components can be replaced by similar or equivalent elements known to those skilled in the art.

Claims

1. A durability test device, characterized in that, Durability test for a bi-directional telescopic locking device, including: A load simulation device (10) capable of placing a test part (60) and applying a load to the test part (60); A driving part (20) for connecting with the test part (60); A driving device (30) for providing torque to the driving part (20) to drive the test part (60) to telescopically extend and retract; A torque sensor (40) disposed between the driving part (20) and the driving device (30) for measuring the torque when driving the test part (60) to telescopically extend and retract; The load simulation device (10) includes: A pressure module (14) provided with a shaft hole through which the end of the test part (60) passes; A lever assembly (12) disposed on the pressure module (14), with both ends extending out of the pressure module (14) respectively to form a first free end (121) and a second free end (122); A counterweight module (13) disposed at the first free end (121) of the lever assembly (12); A tension module (11) movably connected to the second free end (122) of the lever assembly (12); A pressure sensor (15) disposed in the pressure module (14) for testing the pressure value applied by the lever assembly (12) to the pressure module (14); The pressure module (14) includes: A pressing block (141); A pressure rotating block (142) rotatably connected to the pressing block (141), and a first through groove (1421) for accommodating the lever assembly (12) is provided on the pressure rotating block (142); A support block (143) provided with a first shaft hole (1431) through which the end of the test part (60) passes; A pressing block (144) disposed between the support block (143) and the pressing block (141) and movably connected to the support block (143), and a second shaft hole (1441) through which the end of the test part (60) passes is provided on the pressing block (144), and the axial direction of the second shaft hole (1441) is parallel to the axial direction of the first shaft hole (1431); The tension module (11) includes a support seat (111) and a tension rotating block (112) which are movably connected, the tension rotating block (112) is rotatably connected to the support seat (111), and a second through groove (1121) through which the lever assembly (12) can pass is provided on the tension rotating block (112), and the second free end (122) of the lever assembly (12) is disposed in the second through groove (1121); When the counterweight module (13) is increased or decreased, the lever assembly (12) can drive the pressure rotating block (142) and the tension rotating block (112) to rotate adaptively to satisfy the inclination of the lever assembly (12).

2. The durability test device according to claim 1, wherein, It further includes a control module (50), which is connected to the driving device (30) and the torque sensor (40). During the test, the driving device (30) drives the test part (60) to reciprocate and stretch under the load applied by the load simulation device (10) under the control of the control module (50). The control module (50) evaluates the life of the test part (60) according to the torque data measured by the torque sensor (40) and the number of times the test part (60) stretches and retracts.

3. The durability test device according to claim 1, characterized in that, It further includes: A moving platform (70) for carrying the driving member (20), the driving device (30) and the torque sensor (40), and the moving platform (70) can move along the first direction X and the second direction Y.

4. The durability test device according to claim 3, characterized in that The moving platform (70) includes: A fixed plate (71): on which there is a first limiting portion (711) extending along the first direction X; A first sliding plate (72) on which there are a second limiting portion (721) and a third limiting portion (722). The second limiting portion (721) is inlaid with the first limiting portion (711), and the first sliding plate (72) can move relative to the fixed plate (71) along the first direction X; the third limiting portion (722) extends along the second direction Y; A second sliding plate (73) on which there is a fourth limiting portion (731). The fourth limiting portion (731) is inlaid with the third limiting portion (722), and the second sliding plate (73) can move relative to the first sliding plate (72) along the second direction Y.

5. The durability test device according to claim 4, characterized in that The first direction X is perpendicular to the second direction Y; The driving member (20), the driving device (30) and the torque sensor (40) are fixedly arranged on the second sliding plate (73).

6. The durability test device according to claim 5, characterized in that A first support member (81), a second support member (82) and a third support member (83) are fixedly connected to the second sliding plate (73). A first mounting shaft hole for sleeving the driving member (20) is provided on the first support member (81), and a second mounting shaft hole is provided on the third support member (83); The driving device (30) is fixedly connected to the third support member (83), and the output shaft of the driving device (30) passes through the second mounting shaft hole and is connected to the torque sensor (40). The torque sensor (40) is supported on the second support member (82), and the other end of the torque sensor (40) opposite to the driving device (30) is fixedly connected to the driving member (20); the driving member (20) is sleeved in the first mounting shaft hole of the first support member (81) and can rotate in the first mounting shaft hole.

7. The durability test device according to claim 4, characterized in that The first limiting portion (711) protrudes from the surface of the fixing plate (71). First steps (712) are formed between the opposite sides of the first limiting portion (711) and the surface of the fixing plate (71) respectively, and the first steps (712) extend along the first direction X; The second limiting portion (721) is a groove with an opening direction facing the first limiting portion (711); The third limiting portion (722) protrudes from the surface of the first sliding plate (72). Second steps (723) are formed between the opposite sides of the third limiting portion (722) and the surface of the first sliding plate (72) respectively, and the second steps (723) extend along the second direction Y; The fourth limiting portion (731) is a groove with an opening direction facing the third limiting portion (722).

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