539 results about "Test group" patented technology

The invention discloses a curtain wall structural adhesive damage detection method and device based on modal difference and digital twinning, and belongs to the technical field of digital twinning structural adhesive damage detection and evaluation. The problem that in the prior art, a traditional glass curtain wall structural adhesive damage detection and evaluation method based on the first-order inherent frequency is not sensitive to local boundary adhesive failure, and consequently the specific damage position cannot be positioned is solved. The method comprises the following steps: acquiring vibration data of a group of hidden framing glass curtain walls to be detected and a group of hidden framing glass curtain walls in a lossless state to obtain normal acceleration time history data; primarily screening second-order and third-order inherent frequencies, and judging whether the structural adhesive is damaged or not according to a difference constraint condition; further positioning the damage by using the boundary relative curvature modal difference, and judging whether the current measuring point is a damage point or not; and constructing a digital twinborn model and damage early warning, and outputting a parameter report and a visual damage evaluation result. The method effectively improves the boundary damage positioning precision, and can be applied to glass curtain wall structural adhesive damage detection.

The invention relates to the technical field of concrete testing, in particular to a concrete testing method which comprises the following steps: manufacturing a plurality of groups of standard-size concrete test pieces according to a preset concrete mix proportion, and respectively placing the standard-size concrete test pieces under a simulated curing condition and a standard curing condition for curing in a preset curing period to form a first test group and a first control group; based on a plurality of detection points, carrying out a rebound test and an ultrasonic test on the concrete test pieces in the first test group, and determining a high-frequency ultrasonic section to determine an ultrasonic attenuation coefficient of a single concrete test piece, according to the ultrasonic propagation speed, the ultrasonic attenuation coefficient and the detection rebound value, constructing a concrete strength-based correction model to obtain the comprehensive compressive strength of the concrete test pieces in the first test group, and determining the standard compressive strength corresponding to the concrete test pieces in the first control group, and determining an initial influence coefficient of the simulated maintenance condition according to the comprehensive compressive strength and the standard compressive strength. The compressive strength of the concrete structure is effectively tested.

The invention discloses an energy-storage heat-conducting structural adhesive testing device and method, and belongs to the technical field of material thermal performance test.The energy-storage heat-conducting structural adhesive testing device comprises a bearing plate arranged on a pipeline stand column and a plurality of testing sets located on the bearing plate, and each testing set comprises a master control box, a pressure sensing assembly, a heating assembly and a guiding assembly; the pressure sensing assembly can perform intelligent pressure control on a to-be-tested sample, heat-conducting property deviation under different pressures is eliminated, the heating assembly adopts a graphene heating film to realize an automatic frequency modulation function, so that the heating temperature is uniform and constant, and the guiding assembly comprises a pressing plate, a guiding column, an electromagnet and a strong magnet which are located above the heating assembly. According to the invention, axial and planar heat conduction performance tests can be carried out on the to-be-tested sample, simultaneous multi-station tests are also realized, the accuracy of comparison tests under the same working condition is ensured, and the test precision and the working stability of the heat conduction performance of the to-be-tested sample are improved.

The application discloses a curtain wall structure adhesive damage detection method and device based on modal difference and digital twinning, and belongs to the technical field of digital twinning structure adhesive damage detection and evaluation. The application solves the problem that the traditional glass curtain wall structure adhesive damage detection and evaluation method based on the first-order natural frequency cannot locate the specific position of damage due to the insensitivity to local boundary delamination. The application collects vibration data of the test group of hidden frame glass curtain walls and the non-damage state group of hidden frame glass curtain walls to obtain normal acceleration time history data. The second-order and third-order natural frequencies are preliminarily screened, and whether the structure adhesive is damaged is judged through the difference constraint condition. The boundary relative curvature modal difference is used to further locate the damage, and whether the current test point is a damage point is judged. A digital twinning model and damage early warning are constructed, and a parameter report and a visual damage evaluation result are output. The application effectively improves the boundary damage positioning accuracy and can be applied to glass curtain wall structure adhesive damage detection.

The invention belongs to the technical field of cosmetic testing, and discloses a method for testing untoward effects of cosmetics, which comprises the following specific steps: step 1, sample analysis: selecting a target cosmetic to be tested, performing component analysis on the target cosmetic, screening out suspicious components, recording and separating, and determining a sample to be detected; and preparing the separated target cosmetic suspicious components into paste with the same concentration as a test sample, and numbering the test sample. According to the method, four test groups are arranged, suspicious components of a to-be-measured target cosmetic are analyzed and extracted and then made into patches, and then different patches are divided into the four test groups to be subjected to a spot patch test and a light spot patch test at the same time; and finally, evaluating according to the analysis result to determine the adverse reaction caused by the suspicious components of the target cosmetic, so that the test efficiency of the to-be-tested target cosmetic can be improved, and the adverse reaction caused by the suspicious components of the to-be-tested target cosmetic can be analyzed more accurately.

The invention discloses a composite limit test control method and device for a source table. The method comprises the following steps: firstly, responding to a digital trigger signal to initialize a source table test system, and setting test working parameters and limit test group parameters; then, the currently obtained measurement data is sequentially compared with each limiting test group parameter to obtain a comparison result; executing a limiting test comparison process according to the enabling starting state identified by the obtained comparison result; and finally, outputting a test result signal corresponding to each limiting test group parameter. Due to the fact that the source meter is changed from a single measuring instrument to an intelligent testing and control node on a production line, real-time data analysis and decision making are achieved through composite limitation, seamless linkage with the production line is achieved through output testing result signals, and finally full-automatic, high-efficiency and high-reliability production testing and sorting are achieved.

The embodiment of the invention provides a method and system for evaluating the health state of power equipment, and belongs to the technical field of artificial intelligence. The method comprises the following steps: acquiring an inspection record of each component of the power equipment; performing quantitative scoring on each inspection record to obtain an inspection record matrix of the power equipment; obtaining a maintenance record of the power equipment; performing quantitative scoring on the maintenance records to obtain a maintenance matrix of the power equipment; matching and comparing the inspection record matrix and the maintenance matrix to obtain a minimum health state assessment period; dividing the inspection record matrix and the maintenance matrix according to the minimum health state evaluation period to obtain associated data of inspection records and health states; randomly splitting a data set formed by the associated data to obtain an iteration group and a test group; generating a weight sequence according to the iteration group by adopting a preset weight iteration algorithm; and testing the weight sequence by adopting the test group to determine whether the weight sequence is qualified or not.

The invention discloses a motor testing device for a robot, and relates to the technical field of motor testing for robots, and the motor testing device comprises a control cabinet, a testing platform, a locking device, a torque rotating speed sensor, a shaking simulation part, a load testing group and an adjusting part. Efficient detection of the motor for the robot with the body is achieved through cooperation of the shaking simulation component, the load testing assembly and the adjusting component, the shaking simulation component drives the motor to shake, the amplitude is changed under the action of the adjusting component, the stability of the motor is detected by simulating the bumping state, and the load testing assembly applies variable friction resistance. Loads are increased or decreased through the adjusting part, the actual use condition is flexibly simulated, the adjusting part can synchronously or separately adjust the shaking amplitude and the resistance application size, the complex environment is accurately simulated, shaking and load testing are fused, the testing convenience and accuracy are improved, the motor quality is efficiently controlled, and potential safety hazards of the motor for the robot are found in advance.

The invention relates to the technical field of composite film strength detection, and discloses a composite film peel strength testing device which comprises a testing platform, two pulling sliding plates slidably mounted in the two extending parts respectively and capable of being synchronously and mutually close to or away from each other for adjustment, and the two pulling sliding plates are arranged on the testing platform. The opposite ends of the two pulling sliding plates are each provided with a clamp used for clamping a single-layer film of a composite film separation section. The clamping assembly is arranged in the test platform and is used for clamping and limiting the fitting section of the composite membrane and enabling the separation section and the fitting section of the composite membrane to form a Y-shaped state; and two groups of test assemblies. Through the Y-shaped constant-angle stripping design, the stripping surface of the composite film is uniquely locked, the stripping angle is kept unchanged in the whole testing process, and the effects that stripping cracks are stably limited to a specified unique interface, crack initiation is controllable and deviation is avoided are achieved.

The invention is suitable for the technical field of traveling block hook testing, and provides a testing device for a traveling block hook and a testing method thereof.The testing device comprises a mounting assembly used for providing rigid support for the whole device and a testing assembly arranged on the mounting assembly, the test assembly is used for applying a simulation load to the hook assembly of the traveling block, the detection assembly is arranged on the mounting assembly and is used for carrying out image acquisition on the hook assembly of the traveling block, and the test assembly comprises a clamping unit and a load simulation unit which are oppositely arranged from top to bottom. The clamping unit comprises a suspension oil cylinder, a first hinge structure and a fixing seat, the load simulation unit comprises a load oil cylinder and a second hinge structure, a friction effect equivalent load is introduced through an equivalent load model, the defect that the friction force of a drilling tool is neglected in an existing test is overcome, the test load better fits the actual drilling working condition, and the test efficiency is improved. The accuracy of a detection result is improved.

The invention provides a double-station radio frequency chip high-low temperature high-speed test sorting machine which comprises a test assembly, and the test assembly comprises a shell, a workbench, a preprocessor, a first air inlet pipe, a first exhaust pipe, a placing device and a detection table; the inner side wall of the shell is fixedly connected with a workbench, two preprocessors are symmetrically installed on the top of the workbench, the outer side walls of the preprocessors communicate with an air inlet pipe and an exhaust pipe, and the top of the workbench is symmetrically and fixedly connected with two detection tables. The chip is preprocessed through the preprocessor, it is ensured that the chip reaches the required test temperature before entering the detection table, and therefore the overall test time is shortened. The test cover slidably connected to the test bench facilitates rapid replacement of the test chip, and further improves the test speed. By adding the double testing stations, testing can be carried out alternately, two groups of chips can be tested at the same time, the waiting time is shortened, and the testing efficiency is improved.

The present invention discloses a test method for ultrasonic rolling processing of metal material surface strengthening, including: Step 10, determining test factors and levels of each test factor according to the metal material to be surface-strengthened; Step 20, referring to the orthogonal table, designing an orthogonal test table according to the determined test factors and levels of each test factor; Step 30, calculating the equivalent energy factor G of each test according to the levels of each test factor in each test in the orthogonal test table; Step 40, determining a similar test group including tests with similar equivalent energy factor G, deleting at least one test and retaining at least one test in the similar test group; Step 50, updating the orthogonal test table and conducting tests according to the updated orthogonal test table. Applying this test method can optimize and reduce the number of tests.

The invention belongs to the technical field of non-metallic material nondestructive testing, and particularly relates to a method for evaluating the defect detection capability of a coplanar capacitive sensor. According to the defect detection capability evaluation method, defects under different buried depths and sizes are scanned, the distortion rate of a detection signal is calculated, and a preset threshold value is given to judge whether the defects are detected or not; and then a visual chart is drawn, and evaluation of the defect detection limit capability of the coplanar capacitive sensor is realized. The invention discloses a coplanar capacitive sensor defect detection capability evaluation method. The method comprises the following steps: determining a positive sensitivity region, a negative sensitivity region and a zero sensitivity region of a coplanar capacitive sensor; constructing to obtain a non-metallic material defect test group; establishing an electrostatic field simulation model; solving a distortion rate D of the detection signal; drawing a relation curve of detection signal distortion rates D under different burial depth positions and different defect sizes; giving a preset threshold value A, and recording a comparison result; and drawing a comparison result in a visual chart.

The invention relates to the technical field of low-temperature testing, in particular to module power supply low-temperature testing equipment which comprises a machine body, a mechanical arm feeding set, a testing set, a first translation power mechanism and an air inlet mechanism are installed on the machine body, a plurality of testing bins which are separated in a sealed mode are arranged on the testing set, and at least one testing jig is arranged in each testing bin. The test fixture is arranged to position and place a to-be-tested product, the to-be-tested product is placed on the test fixture through the manipulator feeding group, and the test fixture is electrically connected with the positioned and placed to-be-tested product; the modular splitting of the bin cover, the test group main body and the air inlet mechanism is realized, namely the modular splitting of a sealing function, a positioning test function and a low-temperature air supply function is realized; when a test fixture or a circuit needs to be replaced, only the main body part of the test group needs to be replaced, and the bin cover and the air inlet mechanism do not need to be changed; similarly, the bin cover and the air inlet mechanism can be independently replaced or maintained, so that the operation and maintenance flexibility and convenience of the equipment are improved.

The invention provides a chip verification system, verification method, device and medium, the system comprises a verification device and a to-be-tested chip, and the verification device comprises a test component, a verification model and a verification file; the test component is used for obtaining a reference test case and a to-be-input picture according to the identifier of the to-be-tested module; according to the dependency relationship of the to-be-tested module, determining an associated module having the dependency relationship with the to-be-tested module and obtaining an associated test case, and sequentially splicing the reference test case and the associated test case to obtain a first test linked list; obtaining a target test case, and sequentially splicing the reference test case, the associated test case and the target test case to obtain a second test linked list; and inputting the to-be-input picture and the first test linked list into the verification model, inputting the to-be-input picture and the second test linked list into the to-be-tested chip, and comparing output results of the to-be-input picture and the second test linked list to obtain a verification result. According to the scheme, the chip verification is accurate and reliable.

The invention discloses a gas film flow field pressure testing device, and particularly relates to the technical field of gas bearing detection, the gas film flow field pressure testing device comprises a rack, a testing assembly is arranged on the rack, the testing assembly comprises a testing table arranged on the rack, and two bases are arranged at the bottom of an inner cavity of the testing table; and two ends of each base are respectively provided with a pressurizing block for testing a test piece. According to the invention, the deflection angle of the articulation piece is adjusted through the screw rod, and the arc-shaped constraint groove and the self-weight resetting structure of the pressurizing block are matched, so that gas bearing test pieces with different outer diameters and different groove type parameters can be flexibly adapted; the adaptability depends on standardized test logic formed by collaborative research and development, and on the contrary, the test capability of accurate data and panoramic working conditions covers more application scenes, so that an accurate, comprehensive, efficient and practical closed-loop advantage is formed, and the industrial application value of the device is remarkably improved.

The invention relates to an adjustable experimental device for thrust testing, and belongs to the technical field of detection experimental equipment. Comprising a positioning base provided with a first positioning hole, a second positioning hole and a third positioning hole; the test fixing seat is detachably mounted on the positioning base through the first positioning hole, and the test fixing seat is provided with an accommodating space for accommodating a test workpiece; the supporting assembly is mounted on the positioning base through the second positioning hole; the first driving seat is provided with an adjusting part in a first preset direction and an adjusting part in a second preset direction; and the testing assembly is mounted in the adjusting part and the accommodating space. The method is used for solving the technical problem that in the prior art, an error is caused by a movable gap in a method that a driving positioning rod drives a driven rod to conduct clamping and positioning.

The invention relates to the technical field of signal testing, and provides a Web-based PCIe signal testing method, device, system, equipment and medium, and the method comprises the steps: receiving a structured test task file uploaded by a user based on a Web front end, analyzing and extracting a to-be-tested combination parameter, and generating a test task queue; for each test task in the test task queue, calculating a target pulse count value required by PCIe preset parameter switching of the to-be-tested device, controlling the signal generator to output a corresponding target pulse signal, and triggering the to-be-tested device to be switched to a target state; for each test task, configuring oscilloscope parameters, loading a matched link loss simulation file, and controlling an oscilloscope to automatically collect and standardly store waveform data; automatically analyzing the waveform data, and extracting key index data; and filling the key index data into the test report template to generate a target test report. Through the technical scheme, the test efficiency is improved, and the accuracy and consistency of the test are ensured.

The utility model provides a drawing test tool, which belongs to the technical field of energy storage battery manufacturing and testing equipment.The drawing test tool comprises a test bench, a clamping assembly, a gantry support, a first locking assembly, a drawing test assembly and a second locking assembly, the clamping assembly is arranged on the test bench, the gantry support is arranged on the gantry support, and the second locking assembly is arranged on the gantry support. The object to be tested only needs to be clamped and positioned on the test rack through the clamping assembly, the gantry support is slidably arranged on the test rack in the first direction, and the drawing test assembly is slidably arranged on the gantry support in the second direction, so that the drawing test assembly can perform two-dimensional movement on the plane parallel to the test plane of the object to be tested; therefore, the drawing test assemblies can be moved to different test positions on the same surface of the to-be-tested object respectively without moving and adjusting the position of the to-be-tested object on the test bench or reloading the to-be-tested object, and the tensile mechanical properties of the to-be-tested object at different test positions can be tested quickly, accurately and efficiently.

The utility model discloses a loudspeaker double-test-position sorting machine which comprises a positioning assembly, the positioning assembly comprises a positioning table, a positioning detection piece and a positioning table driving piece, the positioning table is provided with at least two positioning carrying tables and at least two positioning carrying table driving pieces, and the two positioning carrying tables are both rotatably installed on the positioning table; the at least two positioning carrying tables are arranged at intervals in the Y-axis direction; the positioning detection piece is used for detecting the positioning angle of the positioning carrying table; the testing assembly comprises a testing table, a testing mechanism and a testing driving part, the testing table is provided with at least two testing grooves, and the at least two testing grooves are arranged at intervals in the Y-axis direction; the test mechanism is arranged above the test bench; a feeding assembly; a transfer assembly; and a discharging assembly. According to the utility model, the at least two positioning carrying tables on the positioning table successively rotate and position the at least two loudspeakers, and then the loudspeakers are transferred to the at least two test grooves of the test table for synchronous test, so that the test efficiency is improved.

The utility model belongs to the technical field of detection equipment, and particularly relates to an adhesive tape retention testing machine which comprises a mounting plate and one or more groups of testing assemblies arranged on the mounting plate side by side, and each testing assembly comprises a force sensor mounted on the mounting plate; the upper end of the experiment board is connected with the force sensor and used for being adhered to a to-be-tested product; the balancing weight is used for being adhered to the lower end of the to-be-tested product to provide weight; the industrial computer is integrated with a microcontroller and a display; the microcontroller is respectively connected with the sensor and the display; and the plurality of operation buttons are respectively connected with the microcontroller. According to the utility model, effective holding force testing can be realized on products to be tested, such as adhesive tapes with relatively light weight, through the counterweight of the counterweight block.

The invention discloses an accurate measurement device and method based on water tunnel flow field resistance, and relates to the technical field of flow field medium measurement. Comprising a working section and a test board. The working section is internally provided with a testing assembly for testing the flow field medium resistance of the testing plate; the test assembly comprises a fixed plate; sensor fixing seats are symmetrically and fixedly connected to the fixing plate, force sensors are fixedly connected to the sensor fixing seats, and the force sensors are used for detecting the force values of a flow field medium in the working section acting on the X-axis direction and the Y-axis direction of the testing plate; the force sensors are fixedly connected with connecting plates. An adjusting assembly used for adjusting the height of the testing plate is arranged between the testing plate and the connecting plates. The force measuring directions of the Y-axis directions of the adjacent force sensors are opposite, and the force value output by the S-shaped force sensor is the resultant force of the X-axis direction and the Y-axis direction; the horizontal resistance of a flow field medium borne by the test plate can be accurately measured, meanwhile, the pressure difference interference force in the vertical direction is effectively counteracted, and the resistance test precision and stability are improved.

In accordance with a technique of parallelized computer system testing, a processor develops, on a representative computer system, a plurality of groups of system tests based on test-ordering constraints, where the system tests in each of the plurality of groups are executable in a temporally overlapping manner. The processor applies a test suite including a sequence of multiple of the plurality of groups of system tests to a production computer system. Applying the test suite includes performing the system tests in each of multiple of the plurality of tests groups in a temporally overlapping manner, such that testing efficiency is improved.

The invention provides a thermal resistance model construction method of an LDMOS (Laterally Diffused Metal Oxide Semiconductor) device, which is characterized in that a plurality of N-type doped isolation layers are formed on a substrate, an LDMOS structure is formed on each N-type doped isolation layer, all LDMOS structures are divided into different test groups according to different key sizes, and the key sizes at least comprise a total channel width and a cross index; measuring the thermal resistance of the LDMOS structure in each test group so as to respectively extract a thermal resistance value array of each group, and performing data fitting on the thermal resistance value array of each group so as to obtain a thermal resistance model of the relationship between the thermal resistance value of the LDMOS structure and the critical dimension; according to the method, the thermal resistance model of the full-size LDMOS device can be constructed by only utilizing a limited number of LDMOS structures in a primary tape, so that the thermal resistance of the LDMOS devices with different sizes can be predicted, the self-heating effect of the device can be accurately evaluated in the design stage, the device design is optimized, the development cost of the device is reduced, and the research and development period is shortened.

The utility model relates to the technical field of lipase detection devices, and discloses a cat pancreas lipase detection device which comprises a kit, a placing frame is fixed in the kit, and three groups of first placing grooves and second placing grooves are sequentially formed in the top surface of the placing frame from front to back in the width direction; each group comprises a first placing groove and three second placing grooves, and the fixing assembly comprises a fixed clamping plate arranged in the first placing groove and a movable clamping plate arranged in the second placing groove. According to the kit, the three groups of detection reagents and detection tools are respectively clamped and fixed by adopting the three groups of fixed clamping plates and movable clamping plates, and when one group of detection reagents and detection tools is unfastened, the detection reagents and detection tools of other groups are still in a clamped and fixed state, so that the stability of the reagents during transportation of the kit is improved; meanwhile, the situation that when a group of cat pancreatic lipase blood samples are detected, a worker mistakenly takes reagents and detection tools of other test groups, and detection work is affected is prevented.

The invention provides a test model of a soil slope rain wash protection device and a design method, and belongs to the technical field of engineering simulation tests. The test model comprises a test soil slope; each protection test group comprises at least one protection unit, the protection units of different protection test groups are different in at least one of size, number and spacing, each protection unit comprises a protection structure, the protection structure comprises a gabion mesh cage and broken stones located in the gabion mesh cage, and the broken stones are arranged in the gabion mesh cage. The two opposite sides of the protection unit in the width direction are a back plane and a step surface respectively; the pressure sensor group is arranged at the target position of each protection unit; the deformation sensors are arranged on the step surfaces of the protection units; the dust and sand box is arranged on the ground in front of the slope surface of the test soil slope and is used for collecting the amount of muddy water falling from the test soil slope; and the rainfall model is used for simulating a rainfall scene. The slope protection structure meeting the stress requirement can be designed according to a specific soil slope.

The invention discloses a liquid-cooled cabinet and a liquid-cooled cabinet testing method, which are applied to the technical field of electronic equipment testing, and the liquid-cooled cabinet comprises a testing assembly which comprises a testing box body with a testing cavity, and the testing cavity extends in the transverse direction so that electronic equipment can be installed from the transverse first side of the testing cavity to the transverse second side of the testing cavity, the second side of the test box body is provided with a power grid box body joint; the power grid box body joint is used for being connected with a power grid equipment joint of the electronic equipment; the liquid supply assembly is used for conveying the cooling liquid into the test cavity and recycling the cooling liquid from the test cavity; the electric control assembly is connected with the testing assembly and the liquid supply assembly, and the electric control assembly is used for obtaining height information of the electronic equipment in the testing cavity and determining the liquid supply amount of the liquid supply assembly according to the height information. According to the liquid cooling cabinet provided by the invention, the mounting position of the electronic equipment can be automatically obtained, so that the liquid supply amount of the liquid supply assembly is automatically determined, and the electronic equipment is convenient to disassemble and assemble.

The application discloses a kind of based on orthogonal test optimization coriolis flowmeter and its structural design method.The optimization design solves the deficiency of many structure optimization experiment numbers and low optimization efficiency caused by the optimal selection of the structure of measuring tube under the condition of limited installation space.The design method comprises the following steps: 1) determining the total length of measuring tube;2) selecting the optimization variable of measuring tube;3) establishing the orthogonal test combination with interaction;4) screening the established orthogonal test combination with interaction, merging repeated test groups and calculating the actual size of each optimization variable;5) constructing fluid-structure coupling numerical model based on orthogonal test group, solving the flow coefficient of each test group;6) analyzing the results of orthogonal test, obtaining the optimal measuring tube type.The optimization design structure of the coriolis flowmeter disclosed in the application enables the measuring tube to have a larger flow coefficient under the condition of fixed length, improves the measurement accuracy and sensitivity of the coriolis flowmeter, and provides an efficient and convenient optimization design process for the structure optimization of the measuring tube of the coriolis flowmeter.

The invention provides a large-scale load test device and test method for a crane, and relates to the technical field of nuclear power hoisting equipment, and the device comprises a cross beam, a shoulder beam, a supporting leg group, a pedestal, a pressure test assembly, a cushion block, and a tested piece. The supporting leg group is connected with the base and the shoulder beam to form a supporting frame; the pressure testing assembly is arranged on the upper plane of the shoulder beam. The cushion blocks are placed on the shoulder beam and located on the two sides of the hydraulic cylinder. And the cross beam is arranged above the shoulder beam and is positioned through a guide structure. During testing, the cross beam is jacked through the pressure testing assembly, and a load is applied to a tested piece connected between the cross beam and the base. According to the invention, hydraulic loading is used for replacing the traditional mode of'lifting equipment + balancing weight ', the device has the advantages of simple structure, simplified process flow, high load applying precision, safe and reliable operation and the like, and the problems of large occupied area, long period and high cost of the traditional test method are effectively solved.

The utility model discloses equipment for testing the tensile stress-strain performance of a rubber combined narrow V-shaped belt, and relates to the technical field of rubber testing, the equipment comprises a bottom plate, and the top end of the bottom plate is respectively provided with a testing assembly and a protection assembly; the protection assembly comprises a protection shell, and a transparent observation plate is slidably arranged on one side of the outer wall of the protection shell. The testing assembly comprises an electric sliding rail and two movable sliding blocks, a C-shaped plate and a machine shell are fixedly installed at the top ends of the movable sliding blocks respectively, a first screw rod is rotatably installed on the inner wall of the machine shell, the top end of the first screw rod penetrates through the top end of the machine shell, and a first bevel gear is fixedly installed at the top end of the first screw rod. According to the V-belt stretching test device, the V-belt fixing and clamping efficiency is improved, the stretching test speed of the V-belt is effectively improved, the automatic opening and closing design of the transparent observation plate facilitates preparation work before the test, the protection effect is ensured in the test process, and the safety of the test process is improved.