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216 results about "Structural testing" patented technology

Structural testing is often referred to as ‘ white box testing ’ or ‘glass box’ or ‘clear-box testing’ because in structural testing we are interested in what is happening ‘inside the system/application’. In structural testing the testers are required to have the knowledge of the internal implementations of the code.

Integrated circuit margin measurement for structural testing

Structural testing of a semiconductor integrated circuit (IC), including scanning test patterns or test conditions into internal circuits of the semiconductor IC, for example from a tester device. A timing margin may be measured during the structural test. The margin is measured based on a characteristic of a comparison between a test signal path of the semiconductor IC and a delayed signal path, the delayed signal path being a signal of the test signal path delayed by a variable delay time. An output of the margin measurement sensor may be scanned out, for instance to the tester device.
Owner:PROTEANTECS LTD

Multi-scale performance evaluation and optimization method and device for well cementation cement stone

The invention discloses a multi-scale performance evaluation and optimization method and device for well cementation cement stone, and relates to the technical field of oil exploitation, the well cementation cement stone is subjected to nanoindentation test and scanning electron microscope microstructure test, and a mechanical property-microstructure test result is obtained; performing electronic computer tomography and mercury injection test on the well cementation cement stone, and constructing a pore network three-dimensional model; performing triaxial mechanical property test, thermogravimetric analysis and thermal expansion test on the well cementation cement stone to obtain a thermal-mechanical coupling test result; performing X-ray diffraction and X-ray fluorescence spectrum analysis on the well cementation cement stone to obtain mineral phase information and element information of the cement stone; according to the method, a mechanical property-microstructure test result, topological parameters, a thermal-mechanical coupling test result, cement stone mineral phase information and element information are fused, an optimal design scheme for target well conditions is generated, multi-dimensional performance testing and characterization are achieved, and an accurate basis is provided for well cementation cement stone optimal design and quality control.
Owner:CHINA UNIV OF PETROLEUM (BEIJING)

Test pre-processing device, medical equipment and testing method

The present invention discloses a pre-test processing device, medical equipment and a detection method, wherein the pre-test processing device includes a tray having at least one limiting groove; a tray fixing fixture having a structure for installing and fixing the tray; a material supply mechanism having a structure for storing materials in batches and transferring the materials one by one to the tray; a test liquid storage mechanism having a group of containers; and an injection mechanism having a structure that can extend into any of the containers to absorb liquid and inject it into the groove of the material on the tray. This solution installs reagent strips by setting a tray, and stores batches of materials through a material supply mechanism and transfers the stored materials to the tray to meet the test needs. Combined with the injection mechanism, the test liquid in the container is automatically injected into the groove of the reagent strip on the tray, which can meet the needs of large-scale and multi-item testing, create equipment conditions for the automation of various tests, and help improve detection efficiency.
Owner:星童医疗技术(苏州)有限公司

Test loading device and method for simulating non-uniform distribution characteristic of ice load

The invention provides a test loading device and method for simulating an ice load non-uniform distribution characteristic, belongs to the technical field of structure tests, and is used for polar region equipment structure model test loading. According to the technical scheme, the test loading device comprises a counter-force constraint frame, a total pressure applying structure and a local high pressure applying structure. Wherein the counter-force constraint frame provides constraint counter-force for a test, and enough rigidity and strength are needed; the total pressure applying structure is fixed to the lower surface of the top of the counter-force constraint frame, total pressure is provided through a large jack, a total force measuring sensor measures the total pressure and is connected with a total pressure head and the large jack, and the space size of the total pressure head is designed according to the size of a high-pressure area. The local high-pressure applying structure is arranged in a total pressure head space, and loads and force are applied and measured through a small jack and a high-pressure area sensor. The device has the advantages of being convenient to install and easy and convenient to load, and the function of quantitatively applying non-uniform loads in the ice-resistant structure local model test can be achieved.
Owner:DALIAN UNIV OF TECH

Testing device for sandwich structure of composite material and I-type fracture toughness testing method

The invention discloses a testing device for a sandwich structure of a composite material and an I-type fracture toughness testing method. The testing device comprises a guide slide rail; a test connection structure fixed relative to the guide slide rail; the guide sliding block is in sliding connection with the guide sliding rail; the sample connecting structure is detachably fixed with the sliding block; loading the connecting structure; provided is a crack detection device. The I-type fracture toughness testing method is suitable for any one of the testing devices for the sandwich structure of the composite material, and comprises the following steps: preparing a sample of the sandwich structure of the composite material; the composite material sandwich structure sample is installed on a testing device, and the composite material sandwich structure testing device is installed on a universal testing machine; adjusting a crack detection device; carrying out initial loading; carrying out secondary loading; recording a load value, a displacement value and an effective crack propagation value; after the test is finished, the chuck of the universal testing machine is loosened, the computer calculates the GIC value of the composite sandwich structure sample, a test result is derived, and a load displacement curve and an R curve are made.
Owner:WUHAN UNIV OF TECH

Device and method for testing torsional shear mechanical property of hollow cylinder structure

The invention discloses a torsional shear mechanical property testing device and method for a hollow cylinder structure, and belongs to the technical field of mechanical structure testing. The device comprises an axial driving mechanism, a radial driving mechanism and a fixed supporting mechanism. The axial driving mechanism is connected with the axial actuating pressure plate through an actuating main shaft; the radial driving mechanism comprises a radial driving mandrel of an inverted conical structure and a driving sliding plate matched with the radial driving mandrel, and axial movement of the main shaft is converted into radial expansion movement through conical face fit. The fixed supporting mechanism is a closed supporting system composed of an outer sleeve, an upper cover plate and a base. Through the unique inverted conical structure design, independent or synchronous application of axial compression, radial expansion and torsional shear loads can be achieved, and the complex stress working condition is effectively simulated. The device has the advantages of being stable in structure, high in testing precision, easy and convenient to operate and the like, meanwhile, equipment universality and maintenance convenience are remarkably improved through the replaceable design of the driving sliding plate, and the device is suitable for mechanical property testing of various hollow cylindrical structural parts.
Owner:POWERCHINA MUNICIPAL CONSTR GRP CO LTD +1

Explosion-proof robot 3R structure test platform and test method

The invention relates to the technical field of explosion-proof robot detection, in particular to an explosion-proof robot 3R structure test platform and test method.The test platform comprises a test PC, a control cabinet and a motor, a panel is arranged at the top end of the control cabinet, and a demonstrator is arranged at one end of the control cabinet; the panel is uniformly provided with a plurality of station bearing assemblies used for installing to-be-tested pieces, and the two ends of the panel are provided with protective supports fixed to the control cabinet. The test PC is arranged on the protective bracket close to one side of the to-be-tested workpiece mounting bracket; fault indicating lamps are arranged at the tops of the protective supports; the station bearing assembly is used for installing and carrying a to-be-tested piece, the motor is used for driving a J4 shaft of the to-be-tested piece to rotate, track data, fault codes and motor data generated by the demonstrator are automatically integrated through the testing PC, a visual report containing risk identification is generated, and therefore the problems that an explosion-proof robot depends on a traditional testing method, the testing period is long, and the testing efficiency is high are solved. Fault positioning is difficult, and maintenance is inconvenient.
Owner:BEIJING YANLING JIAYE INTELLIGENT TECH CO LTD

Method and system for testing split type safety link structure of high-voltage line mirror bracket

The invention relates to the technical field of high-voltage line mirror bracket safety testing, and discloses a high-voltage line mirror bracket split type safety link structure testing method and system. According to the method, plugging and bending tests are carried out on a high-voltage line mirror bracket split type link structure through a mechanical arm, and interface pressure and structure deformation image data are collected in real time. And analyzing interface wear and structural fatigue damage characteristics by using a pre-trained wear detection model, and outputting a real-time wear degree evaluation result. And after the test period is finished, integrating the multi-modal data and the evaluation result to generate a three-dimensional visual detection report, positioning a wear concentration position, marking an abnormal wear point and quantifying the structural safety level. According to the invention, the problems of incomplete test and inaccurate evaluation in the prior art are solved, and the product safety and reliability are improved.
Owner:WOYI HEALTH TECH CO LTD

Pulse excitation device for structure test

The invention discloses a pulse excitation device for structure testing, and relates to the technical field of bridge engineering detection, the pulse excitation device comprises a steel cylinder outer cladding layer, a flange plate and a damping cushion layer, the damping cushion layer is connected with the flange plate through a bolt, and the flange plate is welded with the steel cylinder outer cladding layer. According to the pulse excitation device for the structure test, the explosive is detonated through the blasting fuse, an ideal single pulse load is formed by instantaneous counter-acting force generated when high-pressure gas generated at the moment of explosion of the explosive ejects water at a high speed, and parameters such as the damping ratio, the dynamic impact effect, the natural vibration frequency and the dynamic response of a bridge structure are measured. The shock excitation device does not generate vibration except single impulse force on a bridge structure, the impulse energy is controlled by adjusting the explosive loading amount, the impulse force peak value and the impulse time are controlled by adjusting the water amount and the damping characteristics of the damping cushion layer, and the test accuracy is improved.
Owner:CCCC ROAD & BRIDGE SPECIAL ENG +1

Abrasion test device for reciprocating dynamic seal of actuator cylinder

The invention discloses a wear test device for reciprocating dynamic sealing of an actuator cylinder, and belongs to the technical field of actuator cylinder sealing wear test equipment.The wear test device comprises a main frame body and a test mechanism movably connected to the main frame body, a replaceable to-be-tested actuator cylinder structure is arranged on one side of the main frame body, and the test mechanism comprises a moving rod; the upper end and the lower end of the moving rod are provided with a limiting assembly and a counterweight assembly respectively, the moving rod is provided with a connecting piece, and the connecting piece is hinged to one end of a piston rod in the actuator cylinder structure to be tested. According to the method, the conventional motion of the output end of the actuator cylinder in a static state and the external non-axial acting force borne by the output end of the actuator cylinder in a dynamic state can be simulated, the reliability of the sealing ring in actual work can be comprehensively evaluated through combination of the two, verification is carried out from multiple dimensions, potential risks can be found, and the requirements of safety specifications in the fields of aviation, industry and the like are better met.
Owner:SHENYANG TUNAN INTELLIGENT MFG CO LTD

Building structure intelligent design system and method

The invention discloses an intelligent design system and method for a building structure. The method comprises the following steps: S1, constructing a building database and a rule database; s2, inputting a construction area and a construction target; s3, generating multiple groups of building designs; s4, generating a simulated building structure, and performing a simulated building structure test; s5, submitting an architectural design result passing the test to an expert group appraisal platform, and scoring by an expert group according to an assessment condition; and S6, outputting a final building design result. Model simulation and testing are carried out after the building scheme is generated according to the construction target, unqualified building design schemes can be filtered and processed through the testing step, the follow-up expert review data volume is reduced, scoring is carried out after expert review, and the efficiency is improved. And some basic qualified design schemes can be optimized according to suggestions of expert appraisal, so that the finally obtained design schemes can be enabled to be richer, and the efficiency of generating the construction design schemes of the scheme is further ensured.
Owner:SHANGHAI UNDERGROUND ARCHITECTURAL DESIGN & RESEARCH INSTITUTE

High-temperature fretting fatigue test device

The utility model discloses a high-temperature fretting fatigue testing device, which belongs to the technical field of tenon connection structure testing and comprises an upper clamp and a lower clamp which are used for fixing a tenon sample and applying acting force to the tenon sample, and a digital integrated circuit (DIC) camera used for observing material deformation and crack progress of the tenon sample, a micro-motion cushion block used for supporting a tenon sample is arranged in the upper clamp, the upper clamp is sleeved with an electromagnetic induction coil, the electromagnetic induction coil is located at the contact area of the tenon sample and the micro-motion cushion block, an observation window is arranged between every two adjacent turns of coils of the electromagnetic induction coil, and the DIC camera faces the observation window and is as high as the observation window; the observation window is reserved between the two turns of coils, and the material deformation and crack initiation progress of the tenon sample can be recorded in real time through the DIC camera; and the clamp is connected with the bearing seat through the joint bearing, so that self-centering of the tenon sample can be realized, deflection torque is prevented from being introduced, and the shape control precision of a friction surface of a contact area is improved.
Owner:ZHEJIANG NORMAL UNIV

Flexible test instruction set architecture

Techniques for the testing of devices are disclosed. A testing environment is accessed. The testing environment includes an instruction RAM, an instruction fetch and decode unit (FAD), a code exerciser, a command interface, and a trace RAM. A device under test (DUT) is accessible by the command interface. The testing environment includes a test instruction set architecture (TISA). A test sequence is programmed by a user. The test sequence includes one or more instructions from within the TISA. The test sequence is stored in the instruction RAM. A first instruction is fetched by the FAD. The fetching includes decoding the first instruction. The first instruction is translated by the code exerciser. The translating produces a first packetized communication, which is sent to the DUT. A first packetized response is received by the command interface from the DUT and is reported to the user.
Owner:SIGNATURE IP CORP

System and method for testing dynamic performance of bistable structure

The invention discloses a dynamic performance testing system and method for a bistable structure, and belongs to the technical field of structure testing. The system comprises a workbench, a linear adjustment module, a clamping and angle adjustment module, a torque detection module, a stress detection module and a displacement detection module. The linear adjustment module is arranged on the workbench and is used for adjusting the boundary constraint of the tested structure; one end of the clamping and angle adjusting module is connected with the linear adjusting module, and the other end is fixed at the top of the torque detection module; the stress detection module is used for measuring steady state switching critical force, and the displacement detection module is used for detecting critical displacement. According to the invention, multi-parameter synchronous testing of the bistable structure under different boundary conditions is realized through modular design, dynamic response data of displacement, force and torque can be accurately obtained, and an effective testing means is provided for performance research of the bistable structure.
Owner:JILIN UNIVERSITY

Industrial display screen testing device with special-shaped clamping and limiting functions

The utility model discloses an industrial display screen testing device with a special-shaped clamping and limiting function, which comprises a testing automatic loading and unloading structure, the testing automatic loading and unloading structure is connected with a clamping and limiting structure and a rotation limiting structure in a sliding manner, the rotation limiting structure is positioned between the clamping and limiting structures, the testing automatic loading and unloading structure comprises a bottom box, and the bottom box is connected with the clamping and limiting structure. A testing box is fixed to the upper side of the bottom box, a tester is slidably connected to the testing box, a first supporting plate is fixed to the upper side of the bottom box, a first moving assembly is slidably connected into the first supporting plate and the testing box, an automatic feeding and discharging assembly is fixed to the first moving assembly, the first moving assembly comprises a first motor box, and a motor in the first motor box drives a screw to rotate. The screw rotates to drive the sliding block to slide in the first supporting plate and the test box. According to the industrial display screen testing device with the special-shaped clamping and limiting functions, under the auxiliary action of the vacuum machine, the suction cups are driven to adsorb an industrial display screen, and under the auxiliary action of the first moving assembly and the mechanical arm, the industrial display screen is automatically loaded and unloaded.
Owner:XUZHOU FANGCHENG AUTOMATION TECH CO LTD

Connector-based locking structure test method and system

The present application relates to the field of connector testing, in particular to a connector-based locking structure testing method and system, comprising the following steps: building a multi-physical field coupling test environment to output a composite environmental stress; based on the actual application scenario of the to-be-tested locking structure, obtaining assembly deviation data, and obtaining an assembly deviation state through a preset multi-degree-of-freedom adjustable clamp; based on the physical data of the to-be-tested locking structure, constructing a three-dimensional model of the locking structure, giving real material mechanics parameters, inputting the composite environmental stress and the assembly deviation data into a finite element software for simulation testing, and outputting a simulation test data set; performing physical testing through the multi-physical field coupling test environment, and outputting a physical test data set; comparing and analyzing the simulation test data set and the physical test data set, and outputting a test report. The present application builds a multi-physical field coupling test environment, and combines a multi-degree-of-freedom adjustable clamp to make the test scenario closer to the real application working condition of the connector.
Owner:YUEQING HONGXING ELECTRICAL CO LTD

A hardness tester for testing the structure of a screw extruder

The utility model discloses a hardness tester for testing the structure of a screw extruder, which is applied in the field of screw extruders. The utility model rotates a worm by rotating a crank, and the rotation of the worm drives the rotation of a worm wheel, and the rotation of the worm wheel drives the rotation of a tooth column, and the rotation of the tooth column drives the rotation of a tooth ring, and the rotation of the tooth ring drives other tooth columns to rotate, so that the tooth rod moves, and the movement of the tooth rod drives the movement of a clamping plate, so that the distance between the clamping plates is changed, and the purpose of fixing samples of different sizes is achieved, the cost of detection is reduced, and the applicability is improved. The utility model drives the rotation of a reciprocating screw by the rotation of a motor, and the rotation of the reciprocating screw drives the reciprocating movement of a guide block, and the reciprocating movement of the guide block drives the reciprocating movement of a sliding block, and the reciprocating movement of the sliding block drives the reciprocating movement of a brush, and the method of cleaning the objective lens can achieve the purpose of having a cleaning function, ensure the imaging effect, and reduce the maintenance amount.
Owner:南京力迅螺杆有限公司

Fatigue test equipment and method for overhead rigid suspension expansion joint

The invention relates to the technical field of structure testing, in particular to an overhead rigid suspension expansion joint fatigue test device and method, and the device comprises a fatigue host module which provides reciprocating vertical vibration power for an expansion joint; the comprehensive platform module is used for providing reciprocating horizontal vibration power for the fatigue host module; the control system module comprises a strain data processing unit which is used for constructing a three-dimensional strain field model and calculating stress distribution based on the strain data; the phase compensation generation unit dynamically generates lag compensation time of the horizontal vibration relative to the vertical vibration; and the driving control unit is used for adjusting the phase of the horizontal vibration in real time based on the lag compensation time, so that the horizontal vibration reaches the maximum displacement value at the vertical vibration peak moment. According to the invention, the authenticity, accuracy and reliability of the fatigue test of the expansion joint can be effectively improved, the phase and displacement synchronization of horizontal vibration and vertical vibration can be dynamically adjusted through a linkage control mechanism, and the spatial multidirectional composite fatigue load in actual operation can be reproduced.
Owner:CHINA RAILWAY CONSTR ELECTRIFICATION BUREAU GRP RALL TRANSIT EQUIP CO LTD +1

Experimental device for detecting locomotive plug pin

The utility model discloses an experimental device for detecting locomotive plug pins, which relates to the technical field of locomotive detection equipment and comprises a support plate, a first support block and a second support block are respectively fixed on two sides of the upper end face of the support plate, and a test assembly is connected between the first support block and the second support block. The upper ends of the first supporting block and the second supporting block are connected with a cooling assembly, a U-shaped frame is fixed to the lower end face of the supporting plate, an elastic supporting structure is connected to the U-shaped frame, the testing assembly comprises a sub-plug fixed to the middle of the first supporting block, a female plug fixed to the middle of the second supporting block, and a testing wire is connected between the sub-plug and the female plug. The middle of the test wire is serially connected with a test bulb. According to the utility model, through cooperative use of the test assembly, the cooling assembly, the U-shaped frame, the elastic supporting structure and the vibration motor, the connection stability of the plug and the pin under the vibration condition can be tested, thereby ensuring the accuracy of detection data.
Owner:TAIYUAN HONGSHENG MOTORCYCLE & VEHICLE PARTS CO LTD

A structural strength testing device and method for aluminum alloy windows using photovoltaic glass

The present invention relates to a structural strength testing device and method for aluminum alloy windows using photovoltaic glass, and belongs to the technical field of aluminum alloy window testing; the testing device comprises a base, a test box is fixedly arranged on the upper end of the base, a supporting assembly is arranged on the lower side of the inside of the test box, the supporting assembly comprises a row of supporting rods on all sides and a supporting plate in the middle; the test box is provided with a positioning assembly at the upper end of the positioning frame, the positioning assembly comprises four push plates, and the four push plates are respectively slidably arranged inside the side walls of the test box; a testing assembly is arranged on the upper side of the inside of the test box, and the testing assembly comprises a horizontally movable column, a connecting plate is rotatably arranged at the lower end of the column, a hydraulic cylinder and an air cylinder are arranged at the lower end of the connecting plate, a pressure sensor is fixedly arranged at the telescopic end of the hydraulic cylinder, and a punch is fixedly arranged at the telescopic end of the cylinder; the problem that the testing means of the current aluminum alloy window structure testing device are relatively single is solved.
Owner:SHANXI CONSTR ENG CO LTD

A method for testing the performance of a vehicle tire

The application provides a kind of automobile tire performance detection test device and method, it is related to vehicle tire detection technical field, the device includes base, base is equipped with working condition simulation area and mounting bracket, working condition simulation area is equipped with replaceable test board;Test drive assembly includes test hub and test drive structure that is drivingly connected with test hub, test drive structure is set on mounting bracket;Test hub is located above working condition simulation area;Load simulation component includes load pneumatic structure that is set on mounting bracket and load execution structure that is set on test drive structure, pre-polishing component is set on test drive structure and is slidably connected with load execution structure, pre-polishing component is used to execute pre-polishing operation to test tire before test;Control component and test drive assembly, load simulation component, pre-polishing component are communicatively connected;The application truly reflects tire dynamic antiskid performance, and structure is composed of modular layout design, and it is convenient for on-site detection.
Owner:CHENGDU CELIS TECH CO LTD

Application test method, device and electronic equipment

ActiveCN115688121BTest efficiencyTest script
The application discloses an application testing method and device and electronic equipment, and relates to the field of data security. The method comprises the following steps: testing predetermined code based on a static demand rule to obtain a static demand test result; when the static demand test result is passed, testing the predetermined code based on a structure test rule to obtain a structure test result; when the structure test result is passed, matching the predetermined code based on a predetermined vulnerability library to obtain a vulnerability test result; when the vulnerability test result is passed, performing smoke testing on the predetermined code based on a smoke testing script to obtain a smoke test result; when the smoke test result is passed, testing the predetermined code based on a black-box test script to obtain a black-box test result; and determining a target test result of the predetermined application according to the black-box test result. The application solves the technical problem of low test efficiency in the prior art, in which the steps are complicated and mixed before the application is put online.
Owner:INDUSTRIAL AND COMMERCIAL BANK OF CHINA

Moisture absorption testing device, testing method and application thereof

This invention belongs to the field of textile material testing, and relates to a moisture absorption testing device, specifically a moisture absorption testing device, its testing method, and its application. It includes a lifting platform, on which a testing device and a columnar material fixing tube are mounted. The testing device includes a testing plate and a core structure located at the center of the testing plate. The core structure is situated below the columnar material fixing tube and connected to a liquid reservoir via a liquid guide tube. The liquid reservoir is located above an electronic balance; the electronic balance is connected to a data acquisition unit. The dynamic moisture absorption process of the columnar material is recorded and characterized through the testing plate with its upper and lower perforations. This enables performance testing and characterization of upright columnar materials.
Owner:HENAN YEESAIN HEALTH TECH CO LTD

Multi-point intelligent loading device for arch structure system

The application discloses a kind of arch structure system multipoint intelligent loading devices, relate to arch structure load test technical field, it includes two parallelly arranged arch structures, the lower portion of the arch structure is provided with loading assembly, the loading assembly includes motor, the output end of the motor is fixedly connected with carousel, and motor is used to drive carousel reciprocating rotation, and the circumferential direction of the carousel is fixedly connected with electric telescopic rod.By setting two parallel arch structures, and using electric telescopic rod to drive beam and roller to reciprocating rolling pressure on the top of arch structure, load test is carried out to two arch structures simultaneously, compared with prior art, only single arch structure test can be carried out once, can more truly simulate the situation that multiple arch structures in tunnel are stressed simultaneously, effectively solve the data deviation problem caused by single-point test, so as to more accurately screen out unqualified arch structure, improve the safety and stability of tunnel arch structure system.
Owner:NANJING TECH UNIV

Self-adapting pure axial force measurement system for high-temperature structural test and measurement method

PendingCN122360761APull forceAxial compression
This invention belongs to the field of structural axial force measurement systems, and discloses an adaptive pure axial force measurement system and method for high-temperature structural testing. By adaptively rotating the connecting threaded rod, this invention allows the direction of the force transmitted from the test piece to the spoke-type tension / compression sensor to be adjusted according to the deformation state of the test piece. This reduces the influence of additional bending moments, eccentric loads, and non-axial components on the measurement results, thereby improving the stability and accuracy of axial force measurement in high-temperature structural testing. This invention uses a spoke-type tension / compression sensor as the force measuring element. When the test piece undergoes axial tension, a tensile force is applied to the spoke-type tension / compression sensor; when the test piece undergoes axial compression, a compressive force is applied to the spoke-type tension / compression sensor. Therefore, it can meet the measurement needs of both tensile and compressive conditions in high-temperature structural testing.
Owner:XI'AN UNIVERSITY OF ARCHITECTURE AND TECHNOLOGY

A ball-holding structure test stand

This invention provides a ball-holding structure test socket. The connecting terminal is Y-shaped, with its upper end forked to form two elastic fastening tabs. The opposing upper surfaces of the elastic fastening tabs are arc-shaped. An array of limiting holes is provided on the upper cover corresponding to the elastic fastening tabs. The elastic fastening tabs pass through these limiting holes. During pressing down or springing up, the upper cover drives the two arc-shaped structures of the connecting terminal to separate or engage through the limiting holes. The two arc-shaped structures are tightly attached to and electrically connected to the solder balls of the chip under test. This overcomes the technical problem in the prior art where the connecting terminal easily fatigues during long-term repeated pressing, and insufficient elasticity leads to failure to form electrical contact with the solder balls.
Owner:SHENZHEN YUANRONGDA MICROELECTRONICS TECH CO LTD

Vehicle mechanical performance testing device

The invention provides a vehicle mechanical performance testing device, which relates to the technical field of testing devices and comprises a testing piece, the testing piece is mounted at the bottom of a main body, an outer piece is arranged at the outer end of a connecting plate, a round hole is formed in the outer piece, a pull rod is mounted in the round hole and is of a T-shaped shaft structure, a push plate is arranged at the inner end of each pull rod, and the push plate is connected with the main body. The pushing plate is of an inverted-L-shaped plate-shaped structure, and the top end of the pushing plate is of an inclined structure. When the test piece moves downwards, the insertion head is driven to move downwards together, so that the insertion head can be stressed and displaced in the stress groove, the contact surface of the insertion head and the stress groove is of an inclined structure, the moving piece can transversely displace, the insertion piece is inserted above the pressing plate, the pressing plate is continuously pressed, and the device can avoid loosening by utilizing moving force; the service life is prolonged, and the problem that an existing mechanical property strength testing device lacks a structure for avoiding loosening by utilizing moving force is solved.
Owner:CHANGZHOU HEZHIRUI VEHICLE IND CO LTD

A mechanical life test device for molded case circuit breaker

This invention provides a mechanical life testing device for molded case circuit breakers applied in the field of structural testing. The device includes a frame with a clamp for holding the circuit breaker. A static testing mechanism is also provided on the frame, comprising a static testing bracket fixed to the frame and a static rotary cylinder fixed to the bracket. A testing ring is fixed to the output end of the static rotary cylinder. The bottom of the testing ring has two symmetrically arranged passage notches, and two sets of rotationally symmetrical claws are fixed inside the testing ring. This invention, through a clamp with a connecting joint and a frame with an energized testing mechanism, a static testing mechanism, a dynamic testing mechanism, and loading / unloading stations, can comprehensively test the opening and closing mechanical life and energized life of the circuit breaker under both static and dynamic conditions. This effectively improves testing safety and efficiency, has market potential, and is suitable for widespread application.
Owner:ZHENJIANG PROD QUALITY SUPERVISION & INSPECTION CENT

Comprehensive device for investigating aging of marine steel structure under environmental influence of atmospheric area

The utility model provides a comprehensive device for investigating aging of a marine steel structure under the environmental influence of an atmospheric area, which relates to the technical field of aging test of marine steel structures and comprises a test box, the front surface of the test box is fixedly connected with a first motor, and the output end of the first motor rotatably penetrates through the front surface of the test box. When the device is used, the threaded rod is driven by the first motor to rotate, the movable plate can drive the electrified xenon lamp to be close to or far away from the steel structure test piece to be tested in rotation, the irradiation degree of light rays emitted by the xenon lamp to the steel structure test piece can be adjusted, saline water in the water tank is pumped through the pump body, and when the saline water is pumped into the atomization spray head, the atomization spray head can spray water to the steel structure test piece. When the xenon lamp is close to the steel structure test piece and the pump body increases the pumping speed, the aging speed of the steel structure test piece can be accelerated, and personnel can comprehensively inspect and test the aging of the steel structure in the atmospheric area.
Owner:LIAONING PROVINCIAL INSPECTION & TESTING CERTIFICATION CENT