82 results about "Durability testing" patented technology

The invention relates to the technical field of connector performance detection equipment, and discloses a plugging durability testing machine which comprises a machine body frame, a controller and a testing mechanism in a testing area. A fixing assembly and a driving assembly are arranged between a first support plate and a second support plate of the test mechanism and are respectively used for fixing a plugging piece and a plugging sleeve; the motor box drives the driving assembly to reciprocate in the axial direction to achieve plugging and unplugging. An offset assembly is arranged on one side of the fixing assembly, an air cylinder is used for driving an ejector rod to apply lateral acting force to the inserting and pulling piece, linear driving is converted into rotating torque through an internal ratchet wheel and pawl rotating assembly, and the inserting and pulling piece is driven to rotate by a preset angle around the axis before inserting and pulling. Meanwhile, a multi-dimensional monitoring system is arranged, and the rotation angle, the lateral stress and the electrical performance data are collected. According to the invention, complex working conditions of the plugging member under lateral unbalance loading and different rotation angles can be simulated, an angle-based failure distribution model is established, and the structural strength and contact reliability of the connector are truly evaluated.

The utility model provides a kind of durability test testing machine of automobile sealing strip, it belongs to automobile sealing strip durability test technical field, it includes fixed frame and fixed plate, the top of the fixed frame is fixedly connected with fixed plate, the top of the fixed plate is fixedly connected with shelter frame.The utility model adds temperature table, semiconductor refrigeration piece cold end and electric heating tube by fixed plate, temperature table detects the temperature of the environment where the sealing strip to be tested is located, when it is needed to test sealing strip in low-temperature environment, semiconductor refrigeration piece cold end absorbs heat, when it is needed to test sealing strip in high-temperature environment, resistance wire inside electric heating tube continuously delivers heat to the inside of sealing strip via electrothermal effect, and then the test effect of testing machine is improved.

The invention relates to the technical field of fuel cell detection, and discloses a durability testing device for a sealing element for a graphite bipolar plate, which comprises a workbench, a support frame is mounted at the top of the workbench, an oil cylinder is mounted at the top of the support frame, and a transverse guide rod is driven by the air cylinder to slide along a first chute to drive a bidirectional screw rod to synchronously displace so as to test the durability of the sealing element for the graphite bipolar plate. In the process, the gear and the longitudinal rack are meshed in a staggered mode, linear motion of the transverse guide rod is converted into rotation motion of the two-way lead screw, the first sliding blocks symmetrically arranged on the two sides of the two-way lead screw are made to synchronously move oppositely or oppositely, and then the pressure applying distance is adjusted so as to adapt to target area testing of graphite bipolar plates of different sizes. And then a motor is utilized to drive a rotating shaft to rotate through a coupling, and a cam is driven to push a pressing rod to apply pressure to a target area of the graphite bipolar plate, so that the stress concentration working condition is simulated, the durability detection requirement of the sealing element under complex stress is met, and the test pertinence is further improved.

The invention discloses a vehicle load spectrum prediction method and device based on physical parameter embedding and a medium, and belongs to the technical field of vehicle structure durability testing and load spectrum prediction.The method comprises the steps that a vehicle chassis topological graph is constructed, and initial feature vectors of nodes and edges are defined; splicing the road surface input vector and the vehicle running state vector to form a global time sequence, inputting the global time sequence into a space-time coupling depth prediction model, and predicting a vehicle load spectrum; the space-time coupling depth prediction model comprises a Transform encoder and a GNN encoder, the Transform encoder extracts road surface excitation feature vectors, the GNN encoder injects the road surface excitation feature vectors into a vehicle chassis topological graph, and the vehicle load spectrum is predicted after feature vectors of all nodes are updated through a multilayer graph neural network. The potential law of vehicle dynamics is directly mined from the data, it is avoided that the vehicle is regarded as a black box, and rapid generation of the load spectrum under any design parameter combination is achieved.

This invention relates to a bridge durability testing method, system, and computer storage medium, comprising: preparing standard concrete test specimens and collecting chloride ion concentration data; constructing and training a diffusion flow model based on conditional-flow matching; acquiring chloride ion concentration detection data at multiple discrete depths for representative engineering parts of the bridge concrete under test, and collecting corresponding physical parameters; generating a chloride ion concentration diffusion flow matching field for the engineering parts under test within a continuous depth range; extracting parameters required for bridge durability assessment and substituting them into a preset standard calculation formula to obtain the bridge durability assessment result. The beneficial effects of this invention are: the invention generates a chloride ion concentration diffusion flow matching field without requiring a preset data distribution form, naturally adapting to the unsteady diffusion distribution of chloride ions in bridge concrete structures, characterized by an increase followed by a decrease from the surface to the deeper layers, thus achieving a leap from "point prediction" to "field reconstruction."

The application discloses a vehicle load spectrum prediction method and device based on physical parameter embedding and a medium, and belongs to the technical field of vehicle structure durability test and load spectrum prediction. The method comprises the following steps: constructing a vehicle chassis topology graph, defining initial feature vectors of nodes and edges; splicing a road surface input vector and a vehicle operating state vector to form a global time sequence, and then inputting the global time sequence into a space-time coupling deep prediction model to predict a vehicle load spectrum; the space-time coupling deep prediction model comprises a Transformer encoder and a GNN encoder; the Transformer encoder extracts a road surface excitation feature vector; the GNN encoder injects the road surface excitation feature vector into the vehicle chassis topology graph; and after the feature vectors of all nodes are updated through a multilayer graph neural network, the vehicle load spectrum is predicted. The application directly mines potential laws of vehicle dynamics from data, avoids regarding the vehicle as a black box, and realizes rapid generation of a load spectrum under any combination of design parameters.

The invention belongs to the field of intelligent equipment and measurement, and particularly relates to a three-dimensional force generating and applying device. In order to solve the problems, the invention provides a three-dimensional force generating and applying device. The two arc-shaped transmission modules and the indexing mechanism are matched with each other, so that any force can be adjusted at will in three directions of the space; the integrated force generator can generate loads of any type and any size, and the flexibility is high; a force transmission method of a loading component with an over-deflection prevention structure is innovatively provided, flexible automatic fine adjustment in the force applying direction is achieved, and safety and reliability of the system are guaranteed. The performance of intelligent equipment bearing capacity and durability testing equipment is improved, wide application of the intelligent equipment bearing capacity and durability testing equipment in the fields of manufacturing, logistics, medical instruments, automobiles, parts and the like is promoted, and important practical value is achieved.

The utility model discloses a hinge durability test device which comprises a test board, a supporting frame is arranged at one end of the outer wall of the top of the test board, a longitudinal adjusting mechanism is arranged between the supporting frame and the test board, the supporting frame is fixedly connected with a fixing plate, and a support is arranged on one side of the outer wall of the top of the test board. A transverse adjusting mechanism is arranged between the support and the test board, a supporting column is fixedly connected to the top of the support, a rotating plate is rotationally connected to the top of the supporting column, and a side plate is arranged on the outer wall of the rotating plate. The longitudinal adjusting mechanism slides in a third sliding groove through a third sliding block and is matched with a third threaded lead screw to adjust the longitudinal position of the supporting frame, the transverse adjusting mechanism adjusts the transverse distance between side plates through a second sliding block and a second threaded lead screw, and the height adjusting mechanism lifts the height of the supporting frame through a first sliding block and a first threaded lead screw. The mounting requirements of hinges with different sizes can be met, and the problem that the mounting distance of a traditional device cannot be adjusted is solved.

The utility model relates to the technical field of wiring terminal detection, in particular to a durability testing device for a wiring terminal, which overcomes the defect of unknown durability in the prior art and comprises a base, a sliding rail is fixedly mounted above the base, a first motor is slidably connected above the sliding rail, and a second motor is slidably connected above the first motor. A control bin is arranged on the left side of the first motor, a cam is connected to the interior of the control bin through a bearing, a rotating shaft of the cam is connected with an output shaft of the first motor, a connecting rod is connected to the inner side of the cam through a bearing, a push rod is slidably connected to the interior of the control bin, and the connecting rod is connected with the push rod through a bearing. A detection machine is arranged on the rear side of the push rod, a first support is fixedly installed on the rear side of the detection machine, an air cylinder is arranged in the first support, and a detection plate is arranged in front of the air cylinder.

This utility model relates to the field of durability testing technology, specifically a solid-state drive (SSD) insertion / removal durability testing fixture. It includes a test base, a feeding mechanism, a gripping mechanism, and an insertion / removal mechanism. The feeding mechanism is mounted on the surface of the test base and includes a conveyor frame, a conveyor belt, and a conveyor motor. It can quickly and accurately align the gripping claw with the SSD under test, and the gripping force can be naturally adjusted according to the spring compression. This avoids damage to the SSD casing caused by rigid gripping while ensuring effective clamping of the SSD. The pawl, under the elastic force of the second spring, continuously engages with the ratchet tooth groove, forming a one-way locking structure. This completely restricts gear reversal, thereby locking the position of the pressure plate and ensuring that the gripping claw maintains a stable clamping force. Even if the electric telescopic rod experiences slight extension or contraction, or if the equipment vibrates during operation, it will not loosen, providing absolutely stable gripping assurance for subsequent lifting, conveying, and other processes.

A durability testing apparatus for a water drainage flap to test the durability of the water drainage flap. The water drainage flap comprises a flap column, a water drainage plate arranged inside the flap column and a water drainage rotation shaft connected with the water drainage plate. The durability testing apparatus for the water drainage flap comprises: a vibration table for providing vertical reciprocal vibration and a water inlet flange disc fixed on the vibration table for supplying water to the water drainage flap, wherein the water inlet flange disc comprises a base fixed to the vibration table and a water inlet column arranged on the base and facing the water drainage flap, a water inlet is provided in the water inlet column, the water inlet column and the flap column enclose a water inlet chamber, and the water inlet communicates with the water inlet chamber.

The invention discloses an electric lifting table durability testing machine with voice control and mechanical arm key control and a testing method.An electric lifting table is installed in the center of a test bed, a load loading module is located above the electric lifting table, and a voice control module is located on a stand column on one side of the test bed; the voice control module comprises a microphone, a voice recognition chip and a signal transmitting unit, the voice recognition chip receives a voice instruction through the microphone and converts the voice instruction into an electric signal so as to control the electric lifting table to complete the lifting action, and the mechanical arm control module is located on the outer side of the test bed. The mechanical arm control module comprises a multi-degree-of-freedom mechanical arm, a flexible pressing head and a position calibration assembly, the flexible pressing head presses a key of the electric lifting table, and the main control system is electrically connected with all the modules; the voice control module and the mechanical arm control module are integrated, the durability test of the voice control electric lifting table and the durability test of the key electric lifting table are supported, and the test efficiency is improved.

This invention relates to the field of keyboard key testing technology, specifically a keyboard key durability testing machine, comprising a main body of the testing machine and a test head fixed to its output end. A support is provided inside the main body of the testing machine, with a front plate and a rear plate fixed to the top of the support. A clamping plate is provided on one side of the front plate. Both ends of the support plate are provided with height adjustment parts, and each height adjustment part has an inclined rod on one side. A transmission rod is connected to the bottom of the two height adjustment parts. Under the thrust of an elastic element, a sliding plate pushes the inclined rod to contact the keyboard surface. The sliding plate drives two driving wheels to rotate in opposite directions via a toothed plate. Depending on the keyboard's tilt, when the sliding plate displacement distance is the same, the two driving wheels cause the surrounding wheel to rotate, while the output wheel remains stationary. When the sliding plate displacement distances are different, the two driving wheels cause the surrounding wheel to rotate while simultaneously revolving, driving the output wheel to rotate. The output wheel, through the transmission rod, causes the support to rotate, and the support drives the keyboard to rotate, making the keyboard surface parallel to the support surface.

The invention relates to the technical field of chip testing, and discloses a testing device and a testing method for manufacturing a power management chip, the testing device comprises a mounting cover, an overturning seat, a driving mechanism and a compression resistance testing mechanism, the compression resistance testing mechanism is fixedly mounted at the top of the mounting cover, one end of the overturning seat is in transmission connection with the driving mechanism, and the other end of the overturning seat is in transmission connection with the driving mechanism. The other end of the overturning seat is in transmission connection with the transmission gear set; according to the technical scheme, the driving mechanism drives the conveyor and the overturning seat, the overturning seat is in transmission with the compression resistance testing mechanism through the transmission gear set and the second transmission belt wheel set, is in transmission with the taking and placing mechanism through the transmission gear set, and is in cooperative work with the negative pressure conveying mechanism through the negative pressure tank and synchronous operation of the industrial camera mechanism. The whole process of conveying, adsorbing, transferring, detecting and testing the chip does not need manual intervention, integrity photographing detection, compression resistance durability testing and integrity reinspection after stress can be completed by a single device, and the single testing period is greatly shortened.

This invention discloses a temperature durability testing device for electronic products, aiming to solve the problems of reliance on manual periodic activation and dormancy operations, heavy manpower burden, and low testing accuracy in existing temperature durability testing. The device includes a temperature test chamber, a first power supply, a second power supply, a first control terminal, a second control terminal, a camera, and a load box. The first control terminal is connected to the temperature test chamber, the first power supply, the second power supply, the product, and the load box via communication links to achieve temperature monitoring, automatic power switching, and data acquisition. The second control terminal is connected to the first control terminal via Ethernet and, in conjunction with the camera, enables remote monitoring. This invention replaces manual operation with automated control, reducing manpower input and the risk of human error, improving testing accuracy and reliability, and is suitable for temperature durability testing scenarios of electronic products.

This multi-channel servo durability testing system belongs to the field of servo control and mechanical durability testing technology. Addressing the shortcomings of existing testing equipment, such as single-channel operation, poor multi-unit coordination, and insufficient controllability and data management capabilities during the testing process, this system includes an industrial control computer, at least two servo drive units, a programmable logic controller (PLC), a multi-channel signal acquisition module, and at least one actuator. The industrial control computer provides the operating interface and processes data. The servo drive units include servo drivers, servo motors, electric cylinders, and position detection devices to form a fully closed-loop control system. The PLC receives commands from the industrial control computer and sends control signals to the servo drivers. The multi-channel signal acquisition module collects sensor signals for logical judgment. The actuator is directly driven by the PLC. The PLC drives each unit to operate sequentially and collaboratively according to a preset program, achieving multi-channel synchronous durability testing. This system is primarily used for fatigue life verification of mechanical components in the automotive, aerospace, and other fields.

The application discloses a kind of inorganic material surface modification performance test analysis methods, comprising: preparation inorganic material base material, surface modification is carried out, obtains several modified samples;Test the total surface energy and mechanical property of each modified sample;The durability test environment of modified sample is constructed, and the performance attenuation rate of modified sample after durability test is calculated;Random forest network model is constructed, and random forest network model is trained using input data, output data, and output convergent random forest network model;Predict the performance parameters of the material under new modification process parameters, surface modification after natural environment parameters, and evaluate whether the surface modified inorganic material prepared by new modification process meets the use requirements.The application realizes the comprehensive, accurate and rapid prediction and evaluation of the performance of inorganic material after surface modification, and provides strong technical support for subsequent process research and modification effect test evaluation of modified samples.

The utility model relates to a test tool. A testing tool for detecting durability of a displacement sensor comprises a workbench, a support is arranged on the workbench, a sensor mounting plate and a pusher dog fixing plate which move relatively are mounted on the support, a driving structure is arranged below the pusher dog fixing plate, and the driving structure drives the pusher dog fixing plate to move. A sensor is mounted on the sensor mounting plate, a pusher dog on the pusher dog fixing plate drives a magnet on the sensor to move relative to the sensor, and a mounting surface positioning structure is arranged between the sensor mounting plate and the pusher dog fixing plate. The utility model provides the test tool for detecting the durability of the displacement sensor, which can effectively realize the durability test of the sensor, and is simple in structure and convenient to operate; the technical problem that the durability test of the displacement sensor cannot be realized in the prior art is solved.

A medical device durability and particulate testing system is provided including a durability tester component configured for continually actuating movement of structural device(s); a simulated blood fluid; fluid flow lines; a particle counter component configured for recording continuous particulate data from device(s) subjected to durability testing; flow meters; a fluid management system; and one or more system controller(s) having a processor configured with software for controlling operation of the system and recording data. In an embodiment, the system includes a user interface accessible via a display. In some embodiments the system further includes a heater paired with temperature measuring devices to maintain fluid temperatures within appropriate bounds to simulate blood within the body. In an exemplary embodiment, the durability and particulate testing system is a continuous flow, closed loop system and configured for testing synthetic structural heart devices to simulate the expected lifetime of the device(s).

This invention discloses a smart meter durability testing device, belonging to the field of meter testing technology. It includes a test stand, on which a simulation test unit, a tightening variable control unit, and a data observation unit for detecting test results are installed. This invention uses high and low temperature testing, damp heat cycling testing, and salt spray corrosion testing modules in the simulation test unit to simultaneously simulate multiple extreme environments, accurately assessing the durability of the meter under complex operating conditions. Through a magnetically controlled connector combined with a tightening motor, the tightening stroke and pressure of the terminal screws can be precisely controlled, thereby exploring the impact of different tightening forces on the durability of the smart meter's terminals. A digital display power monitor synchronously records power consumption with the smart meter, directly comparing the test data with the actual value to quickly identify metering deviations. A camera periodically captures data from the display screen, tracking the meter's performance changes at different test stages and accurately locating the time point of failure.

The present application relates to the technical field of wind turbine maintenance decision, and discloses a kind of digital twin driven retired wind turbine predictive maintenance decision system.The system includes operation data acquisition, component data analysis, digital twin model construction, adaptation compatibility evaluation and maintenance decision generation module.Core maintenance parameters and its priority sequence are formulated based on operation and component data;By fusing core and alternative component materials to construct a digital twin model prototype, analyze its signal detection characteristics;According to the durability test data of the model, the life prediction equivalent value is calculated, and the adaptation compatibility with the maintenance system is evaluated;Comprehensive screening of the best maintenance material and generating decisions.This method realizes joint simulation and compatibility quantitative evaluation of various material replacement schemes in a virtual environment, and can optimize signal sensing ability and system matching degree before actual maintenance, thereby improving the feasibility and decision reliability of the life extension operation and maintenance of retired units.

The utility model relates to the field of fuel cells, and provides a testing device which is used for testing the durability of a bonding interface on a piece to be tested. The testing device comprises a testing box and an inflation pipeline connecting the testing box with an external air source, the testing box comprises a first shell and a second shell, a to-be-tested piece can be clamped between the first shell and the second shell, a first cavity is defined between the first shell and the to-be-tested piece, and a second cavity is defined between the first shell and the to-be-tested piece. A second cavity is defined between the second shell and the to-be-tested piece; the first cavity is used for containing a test solution for soaking the bonding interface, the second cavity is communicated with the inflation pipeline, and an external gas source can introduce gas with preset pressure into the second cavity. The testing device disclosed by the utility model is simple in structure, easy to process and manufacture and convenient to assemble, and is favorable for carrying out durability real-time testing on the bonding interface on the to-be-tested piece in a soaking state, so that failure time can be accurately judged, and the accuracy of a testing result is improved.

The application relates to an environment-friendly concrete durability testing device and a detection method thereof, and relates to the field of concrete detection, so as to solve the problem that a concrete durability tester has hidden dangers when detecting concrete blocks, wherein the environment-friendly concrete durability testing device comprises a test platform and a press arranged on the test platform, characterized in that: a detection table for detecting concrete blocks is arranged on the test platform; a placing rack and a feeding mechanism are further arranged on the test platform; the feeding mechanism comprises a feeding track and a driving assembly for driving the concrete blocks in the feeding track to move to the detection table; a plurality of placing grooves for placing the concrete blocks to be detected are formed in the placing rack; the placing grooves are communicated with the feeding track; and a pushing assembly for pushing the concrete blocks in the placing grooves into the feeding track is arranged on the placing rack. The application has the effect of improving the safety performance during the detection of the concrete blocks.

The invention discloses a new energy automobile battery impact resistance testing device, and belongs to the technical field of battery manufacturing. The problem that in the prior art, vibration and impact tests are separated, and multi-axis vibration and a programmable impact load in any direction cannot be applied synchronously is solved. The device comprises a rigid supporting base, a six-degree-of-freedom electromagnetic vibration table, a three-way linkage impact execution mechanism, a battery pack special clamp system, a pose real-time monitoring unit and a central cooperative control module. Through integrated structural design and high-precision cooperative control, time and space synchronous vibration-impact composite excitation is realized under single clamping. The device supports oblique impact in any direction, impact waveform on-line programming and closed-loop damage accumulation control, and the reproduction capability and prediction accuracy of the battery pack durability test on actual service conditions are remarkably improved.

The invention discloses a battery management system software automation test device, and relates to the technical field of batteries, the battery management system software automation test device comprises a test preparation module, a test execution module, a durability test module, a test ending module and a database, firstly, a simulation simulator simulates a BUM to dynamically modify the monomer voltage, temperature and current value of a tested controller; meanwhile, the tested controller receives an instruction issued by the test upper computer to simulate a communication fault, then simulates the TMS and controls the TMS by modifying the temperature of a single cell, meanwhile, the direct-current power supply simulates output voltage, and the simulator simulates a current sensor according to charge and discharge multiplying power to send a current message to the tested controller; finally, the tested controller under different charge-discharge multiplying power and simulation working conditions is simulated, the stability of the tested controller is analyzed, the test cost and the complexity of a test link are reduced, the reliability and the stability of the tested controller can be effectively verified, and the test efficiency and the test convenience are guaranteed.

A high and low temperature rapid alternating durability testing device for a suspension vibration reduction component is installed on a testing platform and comprises a loading tool and a temperature alternating system, the upper end of the loading tool can be connected with loading equipment, and the suspension vibration reduction component is installed on the loading tool to form fatigue loading along with starting of the loading equipment. The device is characterized in that the temperature alternating system comprises an outer temperature box, an inner temperature box arranged in the outer temperature box and a controller for respectively controlling the temperature of the inner temperature box and the temperature of the outer temperature box, the loading tool is arranged in the inner temperature box, a movable door is arranged on the inner temperature box, and the inner temperature box is communicated with the outer temperature box along with the opening of the movable door. According to the invention, the durability test of the suspension vibration reduction part under high and low temperature rapid alternation is realized, the durability of the suspension vibration reduction part in a complex alternating temperature environment is accurately represented, and the accuracy and reliability of the durability test of the suspension vibration reduction part are improved. The invention further provides a method for testing the high and low temperature rapid alternating durability of the suspension vibration reduction component.

The invention provides a high-pressure durability test method for a hydraulic fluid module. The high-pressure durability test method comprises the following steps: acquiring target test pressure and target pulse frequency of the hydraulic fluid module; calculating a minimum fluid volume required by a test element based on this; a metal cylinder and an optional metal ball are filled in an inner cavity of the test element, and the actual effective fluid volume of the test element is adjusted to meet the minimum volume requirement; connecting a test system, injecting and heating a test medium, and then applying a pulse pressure waveform conforming to a target parameter to carry out a durability test; and finally, judging the durability of the test element by monitoring whether the test element leaks or not. By actively and accurately adjusting the effective fluid volume of the test element, effective formation and stable transmission of the high-pressure pulse waveform are ensured, and the reliability and accuracy of the fatigue life test of the hydraulic element under the high-pressure working condition are remarkably improved.

The utility model relates to durability detection equipment for a bridge concrete structure, which comprises a freeze-thaw test box, the freezing and thawing test box is internally provided with a workbench, a lifting driving mechanism arranged on the workbench, a pressure detection module and a plurality of elastic pieces which are arranged at the moving end of the lifting driving mechanism, and a pressing plate which is arranged at the bottom ends of the plurality of elastic pieces and abuts against the detection end of the pressure detection module; the pressure detection module is arranged at the moving end of the lifting driving mechanism, the displacement detection module is arranged between the moving end of the lifting driving mechanism and the pressing plate, the signal input end of the control module is electrically connected to the signal output end of the pressure detection module and the signal output end of the displacement detection module, and the signal output end of the control module is electrically connected to the signal input end of the lifting driving mechanism. The device not only can meet the detection requirements of different pressure loads, but also has the advantages of simplicity and convenience in operation, accuracy in detection and the like, and has important practical significance in improving the durability detection level of a bridge concrete structure.

The utility model discloses a durability testing device for a valve, which comprises a testing table, a supporting plate for placing a valve to be tested is horizontally arranged in the middle of the upper surface of the testing table, clamping components are fixed on two sides of the upper surface of the supporting plate, and a first electric telescopic rod for driving the supporting plate to lift is fixed on the lower surface of the testing table. Vertical rods are fixed to the two sides of the upper surface of the testing table, the top ends of the two vertical rods are jointly and fixedly connected with a top shell, and a vertical shaft penetrates through the middle of the top shell and is rotationally connected with the middle of the top shell through a bearing. According to the utility model, the test bench, the supporting plate, the clamping assembly, the first electric telescopic rod, the top shell, the vertical shaft, the driving assembly and the plugging assembly are arranged, the to-be-tested valve is fixed on the surface of the supporting plate through the clamping assembly, and then the first electric telescopic rod drives the supporting plate to rise, so that the plugging assembly is inserted into a hand wheel at the top of the valve; and then the driving assembly drives the inserting assembly to rotate in a reciprocating mode, the inserting assembly rotates the hand wheel in a reciprocating mode, and continuous opening and closing of the valve are achieved.

A chair back-and-forth swing durability testing device belongs to the technical field of testing of mechanical parts. The testing device comprises a supporting frame, a testing platform arranged at the bottom of the supporting frame, two chair leg limiting pieces arranged on the testing platform and used for limiting a chair to move front and back respectively, a linear driving device transversely arranged in the supporting frame, a chair back pushing piece arranged at the output end of the linear driving device, and a chair bearing balance weight. The device can effectively simulate the condition that a user drives the chair to swing back and forth, and meets the test requirements of the scene.