99results about How to "Improve test stability" patented technology

The invention relates to the technical field of solar cells, and particularly discloses a back contact cell, a back contact cell string, a cell assembly and a photovoltaic system.The back contact cell comprises first grid lines and second grid lines which are alternately arranged in the first direction; the first Pad points and the second Pad points are alternately arranged in the second direction, the first Pad points are connected with the first grid lines, and the second Pad points are connected with the second grid lines; wherein the first grid line comprises a first grid line body and a third grid line, and the first grid line body and the third grid line are connected into an integrated structure; along the first direction, the third grid line is arranged at the corresponding first pad point, and the width of the third grid line is greater than that of the first grid line body. The problem of welding tension in the prior art can be solved, and the connection reliability between the welding strip and the fine grid is improved.

The invention, which relates to the technical field of reactor production, discloses an electric reactor automatic preassembling test platform comprising an automatic placement negative pressure suction structure which can drive an electrolyte electromagnetic elimination protection plate to perform angle rotation under the cooperation of a dynamic anti-interference assembly, so that an eddy current effect is generated in the rotation process of an electrolyte in the electrolyte electromagnetic elimination protection plate; external electromagnetic interference signals are absorbed and reflected, the influence on the reactor test process is reduced, and the adaptive filter is synchronously enabled to realize transverse displacement adjustment through the first transverse adjustment rail slidably connected to the bottom so as to adapt to the test requirements of reactors at different positions, so that the adaptive filter is enabled to cooperate with the dynamic anti-interference assembly, and the test efficiency is improved. The high-frequency signal is subjected to pure extraction and analysis, interference is reduced, the test stability is further improved, the accuracy and reliability of a test result are ensured, the influence of external factors on the test result is reduced, and the accuracy and reliability of the test result are further improved under the cooperation of the test assembly.

The invention relates to the technical field of solar cells, and particularly discloses a back contact cell, a back contact cell string, a cell assembly and a photovoltaic system. The back contact cell is provided with a first area and a second area along a second direction; the first area is internally provided with first grid lines and second grid lines which are alternately arranged in the second direction, and first Pad points and second Pad points which are alternately arranged in the first direction, and the second area is internally provided with third grid lines and fourth grid lines which are alternately arranged in the second direction, and fifth grid lines and sixth grid lines which are alternately arranged in the first direction. The fifth grid line and the sixth grid line extend in the second direction and have discontinuous areas, the fifth grid line is arranged on the extension line of the first main grid in the second direction, and the sixth grid line is arranged on the extension line of the second main grid in the second direction. When the back contact battery is tested, the test difficulty is reduced, and the test reliability and stability are improved.

The invention belongs to the technical field of airplane structure strength tests, and relates to a spar stability test device with a controllable eccentric torque. The device comprises a supporting bottom beam (1), a load applying system (5), a beam web loading clamping plate (6) and an eccentric torque controller (8), one end of the wing spar (2) is fixed on the supporting bottom beam (1), the other end of the wing spar (2) is clamped by a beam web loading clamping plate (6), the beam web loading clamping plate (6) is connected with a lateral adjustable loading joint (7) with an adjustable position, and the lateral adjustable loading joint (7) is connected with a load applying system (5). Two sets of eccentric torque controllers (8) are used for providing jacking force for the outer side faces of trapezoid loading clamping plates (11) of the beam web loading clamping plates (6), and force sensors (23) are arranged on the eccentric torque controllers (8). The loading force line can be close to the rigid center of the spar as much as possible, the adjustable dimension is increased, and the test stability is improved.

The invention relates to the technical field of material detection, and particularly discloses a rubber composite material color difference evaluation method, which is used for solving the problem of inconvenient detection in the prior art. Comprising the following steps: 1, sample preparation: selecting two or more different rubber composite materials, and preparing a sample with a flat and smooth cross section; step 2, chromaticity testing: using a precision colorimeter, using the test data of the standard plate as a reference, performing chromaticity testing on the cross sections of different rubber composite material samples, and recording the measured data values of the samples; and step 3, analyzing data: analyzing the chromaticity data of the test samples to obtain a color difference value E. According to the method, subjective factors of people are eliminated to a certain extent, and a judgment basis is provided by selecting a low-color-difference formula in the tire tread. In addition, the chromatic aberration of the same sample in different periods can be represented by using a precise colorimeter, and the influence of the precipitation process of small molecular substances in the rubber on the appearance of the rubber material can be observed.

The invention discloses an automobile electronic aging automatic test board, and relates to the technical field of automobile electronic testing. To solve efficiency problems; the device specifically comprises a stand column and a rotary table rotationally connected to the outer wall of the stand column, the top of the rotary table is provided with three sets of fixed clamping mechanisms arranged in a circular array, one side of the top of the stand column is in transmission connection with a heating temperature control mechanism through an electric sliding block, and the side, located at a test station, of the stand column is provided with a plug; the heating temperature control mechanism comprises an outer cover, a gas type heating assembly and a timing assembly, wherein the gas type heating assembly and the timing assembly are arranged on the top of the outer cover. According to the invention, the rotatable turntable is arranged and is matched with the plurality of groups of fixed clamping mechanisms, and station switching can be carried out by utilizing rotation of the turntable, so that the steps of feeding, testing and discharging can be synchronously carried out, and the testing efficiency is greatly improved during batch testing.

The present invention provides an industrial plastic barrel pressure test device, which relates to the technical field of pressure testing, and includes a test frame, a clamping assembly, a transmission mechanism and a boosting mechanism. Side baffles are welded on both sides of the test frame, and the clamping assembly includes a first clamping plate and a second clamping plate, and the bottoms of the first clamping plate and the second clamping plate are both integrally formed with sliders, and the surface of the second clamping plate is provided with a groove, and the interior of the groove is embedded with a transmission mechanism. The test device indirectly acts the pressure applied by the boosting mechanism on the top of the industrial plastic barrel to be tested through the transmission mechanism, so as to simulate a scenario where the pressure range and area are not fixed, and multiple test tasks with different pressure ranges and areas can be quickly switched, which improves the test efficiency, and can also perform boosting tests on the sides of the industrial plastic barrel, and simulate the pressure data that multiple industrial plastic barrels can withstand after being stacked after being horizontally laid down, so that the test is more comprehensive and more accurate.

The present invention proposes a shear strength test device and a test method for titanium alloy laser wire-filled lap joints, which belongs to the field of mechanical property testing of titanium alloy lap joints. The present invention solves the problem that there is no shear strength test for titanium alloy laser wire-filled lap joints. There are two adjustment positioning plates, which are respectively arranged on both sides of the lap joint. There are two jaws, which are respectively arranged at both ends of the lap joint and the adjustment positioning plate. The lap joint is clamped with the adjustment positioning plate. The jaws are arranged in the jaw seat. The jaws are connected to the clamping cylinder. The jaws are clamped by the clamping cylinder. The clamping cylinder passes through the jaw seat and is connected to the wire column. The outer sides of the two adjustment positioning plates are provided with left and right positioning plates, and the upper and lower positioning plates are provided on the upper and lower sides of the adjustment positioning plate. It is mainly used for shear strength testing of titanium alloy laser wire-filled lap joints.

This utility model discloses a resistive touchscreen pressure testing device, relating to the field of touchscreen technology. It includes a base with a sliding groove; a sliding block located within the sliding groove, a support seat fixed to the sliding block, a support block fixed to the bottom of the support seat, a positioning block fixed to the base, and an electric telescopic rod mounted on the positioning block, the distal end of which is fixed to the support block; and a testing component. This utility model, through its designed testing component, ensures that when the control motor starts, the output shaft of the control motor drives the rocker arm to rotate, causing the rotating rod to move with the rocker arm's rotation, thereby driving the guide post to perform linear reciprocating motion within the sliding hole. Unlike traditional pressure testing devices, this ensures that during the pressure testing process, regardless of the applied pressure or precise pressure adjustment, it can be monitored in real time by the pressure sensor, truly achieving accurate pressure testing of the resistive touchscreen and greatly improving the pressure testing effect.

The invention provides a full-automatic test system and method for unbalanced attenuation of a symmetric digital cable. Comprising control equipment, signal receiving and transmitting equipment and an unbalance attenuation full-automatic testing device, the control equipment is in communication connection with the unbalanced attenuation full-automatic test device so as to control the unbalanced attenuation full-automatic test device to switch the test ports; the control equipment is connected with the signal receiving and transmitting equipment so as to issue a test command to the signal receiving and transmitting equipment and receive test data sent by the signal receiving and transmitting equipment; the signal transceiving equipment is respectively connected with the unbalanced attenuation full-automatic testing device and the control equipment, one port of the signal transceiving equipment sends an excitation signal to the unbalanced attenuation full-automatic testing device, and the other port of the signal transceiving equipment receives test data output by the unbalanced attenuation full-automatic testing device and processes the test data; and the processed test data is transmitted to the control equipment. According to the invention, signal mode conversion and test channel switching can be automatically completed, and test data processing of the test machine can be automatically carried out on the to-be-detected cable.

The application provides a method for determining the type of defects in a single crystal silicon wafer, comprising the following steps: measuring the particles in the As-Grown state silicon wafer by LST to obtain a first measurement result, and determining a V-rich region according to the first measurement result and a first preset density value; and performing heat treatment on the silicon wafer, and again measuring the particles in the silicon wafer by LST to obtain a second measurement result, and determining a Pv region, an I-rich region and a Pi region according to the second measurement result, a second preset density value and a third preset density value, so as to accurately and effectively distinguish the four region types of the V-rich region, the Pv region, the Pi region and the I-rich region in the single crystal silicon wafer by using the particle density, the test result is obviously distinguished, the test stability is high and the repeatability is high, and the requirement of the defect partition type on the silicon wafer is reduced.

The invention relates to a micro sample self-centering clamping device for a synchrotron radiation in-situ test. Comprising a sensor transition connector, a first back tightening nut, an upper loading connecting rod, an upper in-situ clamping block, an upper clamp, a lower clamp, a lower in-situ clamping block, an auxiliary positioning tool, a lower loading connecting rod, an aligning connecting rod, a second back tightening nut, a spherical centering upper cushion block, a spherical centering lower cushion block and an aligning nut. According to the invention, stable clamping and high-precision self-centering of a small sample in a synchrotron radiation in-situ test are met, and the requirement that the small sample is combined with synchrotron radiation light source tomography to carry out a low-cycle fatigue in-situ test at a service temperature is met.

The conductive light shield for a probe station of the present invention for cable connection pin clips includes a conductive shield body and a light-absorbing layer. The conductive shield body covers the outside of the pin clip on the probe station. The conductive shield body includes a top wall and side walls extending downwards from the edge of the top wall, with one end of the side wall away from the top wall contacting the probe station. The conductive shield body provides electrostatic shielding and optical protection, ensuring that the pin clip is protected from electrostatic discharge and stray light interference during testing, thereby improving testing accuracy and stability. Cable openings are provided on the side walls to accommodate the cable layout between the pin clip and the testing machine, ensuring that the cable can pass smoothly and maintain a normal connection with the testing system. The light-absorbing layer is disposed on the surface of the conductive shield body. The organic carbon black coating has good light absorption properties and can effectively absorb stray light from the environment, reducing interference from light reflection on the optical alignment system.

The utility model discloses a line loss detection clamp compatible with circuit boards of different specifications, and aims to provide the line loss detection clamp which improves the working efficiency, reduces the production cost, is convenient to operate and is compatible with the circuit boards of different specifications. The radio frequency needle moving device comprises a radio frequency needle moving module, a carrier plate and a base, the carrier plate is provided with a plurality of longitudinal stepped grooves, a plurality of transverse stepped grooves, a plurality of limiting blocks and a plurality of positioning blocks, and the limiting blocks are detachably fixed to the longitudinal stepped grooves. The plurality of positioning blocks are detachably fixed on the plurality of transverse stepped grooves, the radio frequency needle moving module comprises a radio frequency needle and an XY-axis transfer plate, the radio frequency needle is arranged at the movable end of the XY-axis transfer plate, the radio frequency needle moving module is arranged on the base in a floating manner, and the carrier plate is connected with the base in a sliding manner. The circuit board testing device is applied to the technical field of circuit board testing.

The invention relates to the technical field of on-line testing of light emitting diode production and manufacturing, and provides an LED testing circuit and a testing method thereof. The method comprises the following steps: providing a test power supply for a to-be-tested plate provided with a to-be-tested multicolor light emitting diode, and lightening light emitting diode lamps with different colors on the to-be-tested plate one by one according to a preset color; after a light emitting diode with a color to be detected is turned on every time, three paths of light sensing parameters of current light emitting are collected through a light sensing sensor, the three paths of light sensing parameters are compared, and the color actually emitted by the current light emitting diode is determined according to a preset color judgment logic and the size relation of the three paths of light sensing parameters; comparing the actually judged color with the currently-lightened preset color, if the color is consistent with the currently-lightened preset color, judging that the light-emitting diode works normally, and if the color is not consistent with the currently-lightened preset color, judging that the light-emitting diode works abnormally; and testing of all the to-be-detected color light emitting diodes is completed successively, and a final LED testing result is obtained.

This application relates to the field of online testing technology for LED manufacturing, and provides an LED testing circuit and its testing method. The method includes: providing a test power supply to a test board on which multi-color LEDs are mounted; sequentially illuminating LEDs of different colors on the test board according to preset colors; after illuminating each LED of a specific color, collecting three photosensitive parameters of the current emission through a photosensitive sensor, comparing the magnitudes of the three photosensitive parameters, and determining the actual color emitted by the LED based on the relationship between the magnitudes of the three photosensitive parameters according to a preset color determination logic; comparing the actual determined color with the currently illuminated preset color; if they match, the LED is determined to be working normally; if they do not match, it is determined to be malfunctioning; and sequentially completing the testing of all LEDs of the colors to be tested to obtain the final LED test result.

The utility model discloses a small-sized vacuumizing unit for a wind tunnel test, and relates to the technical field of vacuumizing. The device comprises a workbench, the top end of the workbench is fixedly provided with a test box, the outer side of the test box is fixedly connected with symmetrically-distributed rectifier bodies, one side of the top end of the workbench is fixedly provided with a mist outlet device body, one end of one rectifier body is fixedly connected with the output end of the mist outlet device body, and the other end of the other rectifier body is fixedly connected with the output end of the mist outlet device body. A vacuum pump body is fixedly installed at the top end of the workbench. A suction pipe is installed at the output end of the vacuum pump body. The clamping ring is fixed through the T-shaped block, the T-shaped groove, the drawing pipe, the clamping ring, the convex plate, the concave plate, the bolt and the connecting plate so that the drawing pipe can be clamped and fixed, the convex plate is pulled out of the concave plate after the dismounting bolt is taken down, then the clamping ring slides to be away from the drawing pipe, the drawing pipe can be dismounted conveniently, and therefore convenient mounting and dismounting of the drawing pipe are achieved. The vacuum-pumping effect is prevented from being reduced due to aging of the suction pipe, replacement is facilitated, and the vacuum-pumping efficiency is guaranteed.

The invention discloses a server board card testing system which is applied to the field of hardware testing. The system comprises an automatic test device, a controller and a cloud server. The automatic test equipment comprises a test board, a probe system and a signal acquisition and analysis system, and the probe system determines the board card position information of each test point according to the test point position information in the test case and automatically moves a probe to the board card position information. And the signal acquisition and analysis system acquires test signals and calls an automatic test instruction to perform waveform analysis on the test signals of the test points. And the controller automatically generates a test case from the test data and sends the test case to the automatic test equipment. And the cloud server performs corresponding test analysis on the waveform image information according to the test case and generates a test report. According to the method and the device, the problems of aging hysteresis, quality instability and uncontrollability of board card testing in related technologies can be solved, and the server board card testing efficiency and testing precision can be effectively improved.

The present application provides a program control box circuit switch synchronization test device, which belongs to the technical field of program control boxes, and specifically includes an equipment bracket for providing support; a drive component for providing power; a rotating shaft component connected to the drive component and rotated by the power provided by the drive component; an installation fixture, in which a program control box is arranged, and the program control box is connected to the rotating shaft component, and the program control box circuit is controlled by the rotation of the rotating shaft component; the drive component, the rotating shaft component and the product installation fixture are sequentially arranged on the equipment bracket. Through the processing scheme of the present application, the pulling speed is stable and controllable, which can ensure the consistency of multiple test results of the same product, solve the problem of unsatisfactory results and low product qualification rate caused by uncontrollable manual test speed, and improve the product test stability and test result reliability.

The invention discloses a phase noise measurement method and system based on a frequency spectrograph, and relates to the technical field of communication measurement instruments and meters, and the method comprises the steps: obtaining ADC data, carrying out the digital down-conversion and decimation filtering of the ADC data, obtaining IQ baseband data, carrying out the digital phase demodulation of the IQ baseband data, and obtaining phase change data; performing frequency difference estimation on the phase change data to obtain a frequency difference estimation result, and performing frequency difference compensation on the phase change data to obtain compensated phase change data; extracting the compensated phase change data to obtain phase fluctuation data, and performing FFT (Fast Fourier Transform) operation to obtain phase noise original data; carrying out self frequency mixing operation on the IQ baseband data to obtain amplitude modulation noise original data; and performing spectrum estimation processing on the phase noise original data and the amplitude modulation noise original data, and then performing stray elimination and smoothing processing to obtain a final phase noise measurement value and an amplitude modulation noise measurement value.

The present invention belongs to the field of chip testing technology, and discloses a chip testing device. The chip testing device includes a test seat, a pressure cover, a pressure head mechanism and a cleaning mechanism. The test seat has a clamping groove, and the clamping groove is used to install the tested chip; the pressure cover is rotatably connected to the test seat; the pressure head mechanism is rotatably arranged on the pressure cover, and the pressure head mechanism can abut against the top surface of the tested chip. The pressure head mechanism is rotated, and the pressure head mechanism can squeeze the tested chip so that the probe on the test seat pierces the solder ball on the tested chip; the cleaning mechanism is arranged on the test seat, and the cleaning mechanism can clean the probe. The chip testing device provided by the present invention is provided with a cleaning mechanism, and the cleaning mechanism cleans the probe to prevent excessive tin slag from adhering to the probe, making the impedance of the probe too large, thereby improving the test stability.

The application is suitable for the technical field of back contact battery, and provides a back contact battery, a battery assembly and a photovoltaic system. In the back contact battery, a first test part and a second test part for contacting probes of different polarities of a testing device are arranged on a silicon substrate. The first test part is in communication with at least part of the second fine grid through a first bus grid line, and the second test part is in communication with at least part of the first fine grid through a second bus grid line. The area of at least one first test part is smaller than the area of a first pad, and the area of at least one second test part is also smaller than the area of the first pad. Thus, due to the arrangement of the first test part and the second test part, the positive and negative probes of the testing device can form stable contact with the first test part and the second test part, respectively.

The utility model provides a pressure testing mechanism for a touch screen, which comprises a working table, a left supporting seat and a right supporting seat are connected on the working table in a sliding manner, a tool plate is connected between the left supporting seat and the right supporting seat in a sliding manner, a positioning groove for placing the touch screen is formed in the tool plate, a pressing plate is arranged above the tool plate, and the pressing plate is connected with the left supporting seat and the right supporting seat in a sliding manner. The pressing plate is connected to the lower side face of the hydraulic cylinder, the hydraulic cylinder is fixedly installed on the support, the support is fixedly installed on the rear side of the workbench, the pressure detection sensor is installed in the middle of the lower side face of the pressing plate and connected with the controller through a wire, the controller is connected with the display screen through a wire, and the controller is arranged in the display screen. The display screen is fixedly installed at the front end of the support. According to the utility model, the touch screens of different specifications can be stably placed, so that the pressure test can be carried out on the touch screens of different specifications, and the test stability is high.

The invention relates to the field of civil aviation, and discloses an emergency slide lifeboat gas cylinder function test filling platform which comprises a first support, a fence net is fixedly connected to the inner side of the first support, a self-adaptive mechanism is arranged on the inner side of the first support, and the self-adaptive mechanism is used for fixing gas tanks of different sizes. An automatic mechanism is arranged on the outer side of the fence net and used for automatically transporting the gas tank. Stable support is provided through the triangular frame, a rotating roller guides a steel belt to stably transmit power, a fixed block positioning air cylinder connected to the steel belt, the air cylinder drives an inner plate to vertically move, sliding fit of an outer plate and the inner plate is combined with guiding of a rail plate, horizontal displacement of the air cylinder is achieved, and finally two moving clamps are matched with a buffer spring to cooperatively act. When the gas tank is clamped and transferred, the impact load is effectively absorbed, the gas tank is protected against damage, and automatic carrying of the gas tank is achieved.

The utility model discloses a testing device under test (DUT) board based on a turret-type sorting machine in the technical field of semiconductor testing, and aims to solve the problems that in the prior art, a testing DUT board is usually connected with a testing piece in a wired mode, so that a testing item is easy to be unstable, and the testing precision is poor. The testing device comprises a PCB, a testing piece is arranged on one side of the front face of the PCB, the testing piece is connected with the PCB through a contact point, a relay is arranged on the other side of the front face of the PCB, pin header holes are formed in the portion, between the testing piece and the relay, of the front face of the PCB, a socket is arranged on the portion, on one side of the relay, of the front face of the PCB, and a plurality of reserved holes used for containing electronic elements are formed in the front face of the PCB. According to the utility model, the test piece and the electronic component are integrated on the PCB, so that the use of connecting wires and adapters is reduced, the impedance in the test process is effectively reduced, the test precision and the test stability are improved, and further, the relay is placed on the PCB, the patch cord is reduced, and the test stability is improved.

The device comprises a screw rod assembly, a rotating shaft assembly, a connecting rod, a lifting handle and a hook claw, the connecting rod is horizontally arranged, a through hole is formed in the center of the connecting rod, and through grooves are formed in the two sides of the through hole; a through hole is formed in the center of the lifting handle, and through grooves are formed in the two sides of the through hole; the screw assembly is vertically arranged and sequentially penetrates through the connecting rod through hole and the through hole of the lifting handle. The two hook claws are oppositely arranged and penetrate through the through grooves of the lifting handle correspondingly, the top ends of the two hook claws are connected to the two through grooves of the connecting rod through rotating shaft assemblies correspondingly, and clamping parts are arranged at the bottom ends of the two hook claws. The device is suitable for separation connectors of any model, the working efficiency is improved through the quick locking and quick dismounting design, the device can be kept in a downward pressing state through the self-locking function, the connector is fixed, the testing stability is improved, single-person operation can be achieved, and the cost is reduced.

This invention discloses a multi-position independently controllable device and method for testing the lifespan of buttons in household appliances. The device includes a movable base, a dual-rotation support mechanism, a lifting adjustment unit, and a multi-cylinder independent testing unit. The dual-rotation structure allows for 180° forward / backward and 90° left / right posture adjustment, with a lifting stroke of 75mm~530mm. Each cylinder is independently equipped with a pressure regulating valve, a solenoid valve, and a counting unit, allowing for individual adjustment of force, frequency, and counting. The power supply system is independently isolated. The method employs upright product clamping, multi-position alignment, and parallel testing of multiple buttons; a single button failure does not affect the overall operation. This invention eliminates the need for inverting the product, realistically simulates usage posture, has a wide range of applications, allows for rapid product changeover, and offers high testing accuracy and efficiency, making it suitable for button lifespan testing in various household appliances.

The utility model provides a test fixing device and a module power supply tester, the test fixing device comprises a probe fixing plate, a test product track plate, a top cover plate and a press-down driving assembly, the test product track plate is arranged between the probe fixing plate and the top cover plate and can move back and forth; the probe fixing plate and the test product track plate are connected through a plurality of elastic assemblies, and the telescoping direction of the elastic assemblies is the same as the motion direction of the test product track plate. The probe fixing plate is provided with a test probe group, the test product track plate is provided with a product test position, the bottom of the product test position is provided with probe through holes, and the probe through holes are arranged opposite to probes in the test probe group; the pressing-down driving assembly is installed on the top cover plate, the driving end of the pressing-down driving assembly faces the product testing position, and the pressing-down driving assembly drives the testing product track plate to move in the direction of the probe fixing plate. By applying the test fixing device provided by the utility model, the equipment test stability is improved.

This application relates to the field of insulation testing and discloses an insulation testing connection device and an insulation testing system. The insulation testing connection device includes a housing, a switch assembly, a control assembly, and a power supply assembly. The housing includes a wall and a first chamber and a second chamber formed by the wall. The wall includes terminals for the device under test and terminals for the testing instrument. The switch assembly is located in the second chamber and connected between the terminals for the device under test and the testing instrument, used to control the on / off state of the terminals for the device under test and the testing instrument. The control assembly is located in the first chamber and connected to the switch assembly. This solution addresses the problems of complex operation and susceptibility to errors. By setting the control assembly to control the on / off state of the switch assembly, and thus controlling the on / off state of the terminals for the device under test and the testing instrument, selective testing between the device under test and the testing instrument is performed without the need for repeated plugging and unplugging, simplifying operation.

The application relates to the technical field of metal strength testing, and discloses a novel elastic metal sheet strength testing device which comprises a base, a vertical rod is fixed on the base, a liftable machine seat is fixed at the top end of the vertical rod, a motor is installed in the machine seat, a supporting plate is fixed on the vertical rod, the top surface of the supporting plate is fixed with a placing table, the placing table is hollow, a plurality of negative pressure suction ports are formed in the top surface of the placing table, a first mounting bracket is fixed on the output shaft of the motor, a second mounting bracket is fixed at the bottom end of the first mounting bracket, a polishing assembly, an adjusting assembly and a positioning assembly are arranged on the second mounting bracket, and a rotating assembly is arranged on the first mounting bracket. The novel elastic metal sheet strength testing device is provided with a plurality of groups of polishing plates with different mesh numbers, forms a friction structure with multiple friction coefficients, can adapt to the testing requirements of different types of components, makes up for the defect that the friction condition of the traditional equipment is single, and improves the fitting property and accuracy of the test data.