990 results about "Tensile testing" patented technology

The invention discloses a scanning electrochemical microscope in-situ stress corrosion testing device and method, and belongs to the technical field of material stress corrosion testing, and the device comprises a base, a power transmission module, a clamping module, a corrosion module, a signal acquisition module and a scanning electrochemical microscope module. Slow strain rate stretching of a sample is achieved through a servo motor, a planetary gear speed reducer and a transmission mechanism, the clamping module is integrated with a force sensor to monitor loads in real time, the corrosion module provides a temperature-controllable corrosion environment, and the scanning electrochemical microscope module achieves electrochemical scanning of the surface of the sample. The device can synchronously obtain a load-deformation curve, corrosion morphology and microcell electrochemical information under stress-corrosion-temperature multi-field coupling, and provides an effective technical means for deeply researching a stress corrosion mechanism of a material. The method comprises the steps of sample installation, corrosion solution preparation, electrode arrangement, tensile test, electrochemical scanning and the like, and has the advantages of simplicity and convenience in operation, comprehensive data, high precision and the like.

The invention discloses a metal material biaxial load testing device and method, and relates to the field of metal sample tensile testing, the metal material biaxial load testing device comprises a cross fixed slide rail, a temperature control box, a metal sample, a fixed assembly, a tensile assembly and a transmission assembly; wherein the cross-shaped fixed sliding rail comprises two track plates, the temperature control box is arranged at the intersection of the two track plates, and avoiding openings are formed in the surfaces, in the vertical direction, of the temperature control box; the metal sample is arranged in the temperature control box, the ends of the metal sample extend out of the corresponding receding openings respectively, the fixing assembly is connected with the end, extending out of the receding openings, of the metal sample and slides on the cross-shaped fixing sliding rail, and the stretching assembly is connected with the side, away from the metal sample, of the fixing assembly and is arranged on the cross-shaped fixing sliding rail. The stretching assembly has sliding freedom in the length direction of the track plate, the transmission assembly comprises a pressure plate and a telescopic rod, one end of the telescopic rod is hinged to the face, away from the track plate, of the stretching assembly, and the other end of the telescopic rod is hinged to one face of the pressure plate. The scheme has the effect of reducing the biaxial loading cost.

The invention discloses a broken sample anti-adhesion and waste taking device and method under an automatic mode of a tensile testing machine, and relates to the technical field of tensile testing machines. The clamp comprises a clamp body, a horizontal pushing type driving mechanism, a clearance, a gas spring ejection mechanism, a manipulator and a control system. A gap (delta = 30mm) is reserved to form a manipulator operation window, so that the problem of failure in grabbing of the fractured sample is solved; the gas spring ejection mechanism pushes the ejection head to extend out by 3mm with the thrust of 20N, and the adhered sample is forcibly separated; the clamping force of the horizontal pushing type driving mechanism reaches 30 MPa, and the maximum opening stroke exceeds 100 mm. All the components are coordinated through a PLC, the processes of sample feeding, tensile sample breaking treatment and separation and recovery are completed, the clamping face state is detected in real time through a laser obstacle avoidance sensor, and operation safety is guaranteed. Manual intervention is eliminated, the automatic compatible defect is overcome, and the automatic testing efficiency of the tensile testing machine is improved.

The invention relates to the technical field of nickel-based superalloy grain segmentation and extraction, in particular to a nickel-based superalloy grain segmentation and extraction method based on a VGG and U-Net fusion model. The method comprises the following steps: preparing an Inconel 740H high-temperature alloy sample; carrying out an in-situ tensile experiment according to the manufactured sample, and observing the microstructure by using a scanning electron microscope in the experiment process; acquiring image data according to different stages of the experiment; performing data enhancement on the acquired image according to the brightness contrast; marking according to the characteristics of the crystal grains to be segmented; obtaining a reference image data set according to the annotation file; performing normalization processing according to the reference image data set to obtain a data set; designing a feature extraction module according to the VGG network model; designing a feature fusion module according to the U-Net network model; carrying out fusion according to the two designed modules to obtain a V-Unet fusion model; designing a loss function according to gray information and structural information of the grain boundary area of the reference image grain relative to other areas, and obtaining a loss function weight of the grain boundary area of the reference image grain; calculating according to the weight of the loss function to obtain model feedback; training according to the V-Unet fusion model to obtain a model; carrying out grain segmentation extraction on an Inconel 740H high-temperature alloy scanning electron microscope image according to the model; performing morphological post-processing according to a segmentation extraction result to obtain a grain image result; and performing statistics and data analysis according to a grain image result. The method can be used for segmenting, extracting and counting the same type of grains at different positions of the nickel-based superalloy and refining the grains to improve the mechanical property of the superalloy, and has great significance.

The invention provides an intelligent evaluation method for mechanical properties of a carbon fiber composite material, and relates to the technical field of material performance analysis, and the method comprises the following steps: evaluating the performance dispersion of a current batch of samples according to a fiber agglomeration area proportion and a carbon fiber monofilament diameter, and comparing the performance dispersion with a preset dispersion threshold, identifying a non-manufacturability discrete risk level; determining the tensile strength value of each sample through a tensile test, performing statistics to obtain a strength mean value and a strength standard deviation, performing matching analysis on the performance dispersion, the strength mean value and the strength standard deviation, and extracting the fiber reinforcement efficiency; performing weighted fusion processing on the fiber reinforcement efficiency and the fiber agglomeration area proportion to obtain a current batch fiber form comprehensive index, comparing the current batch fiber form comprehensive index with a historical batch, and identifying a fiber form change amplitude; and evaluating the quality consistency degree among the batches according to the strength deviation value and the dispersion difference among the batches, and identifying the non-manufacturability discrete source.

The invention discloses a quality detection device for a steel structure frame, and belongs to the technical field of quality detection, the quality detection device comprises a tension testing machine, and also comprises a support plate arranged on the tension testing machine; the feeding mechanism is arranged above the supporting plate and is used for feeding the sample; the moving mechanism is connected with the supporting plate, and a locking mechanism is connected to the moving mechanism; the moving mechanism is used for driving the locking mechanism and the sample to horizontally move, and the locking mechanism is used for clamping or loosening the sample under the moving cooperation of the moving mechanism; according to the scheme, only the sample needs to be placed in the feeding mechanism, the sample is automatically clamped and fixed and is subsequently released and unloaded in the process of driving the locking mechanism to move through the moving mechanism, the automation degree is high, manual active operation is not needed, the operation difficulty is reduced, a large amount of labor force and time are saved, and the working efficiency is improved. The detection efficiency is obviously improved, the subsequent detection work is facilitated, and the practicability is relatively high.

The invention discloses a tight-lock coupler intelligent tensile testing machine and a testing method thereof, and belongs to the technical field of tight-lock coupler test.The tight-lock coupler intelligent tensile testing machine comprises a mounting bottom plate and an electric control cabinet, and a support for supporting a tight-lock coupler to be detected is mounted on the surface of the mounting bottom plate; a tensile connecting frame for connecting the tight-lock coupler is mounted on the surface of the bottom plate on one side of the support, an integrated design of'tensile force detection and visual detection 'is innovatively adopted, mechanical parameter acquisition and visual deformation observation are combined, traditional mechanical data such as tensile force and displacement are obtained, and visual characteristics such as fine deformation and crack initiation are captured; precise synchronization of pulling force application, displacement collection and camera shooting is achieved through the synchronous controller, the real-time corresponding relation of pulling force-displacement-visual deformation is established, the problems that an existing device is single in detection dimension and poor in data relevance are solved, and the potential quality hazard checking capacity and the persuasion of a detection result are improved.

The invention discloses a belt conveyor belt detection device and a using method thereof, and relates to the technical field of belt detection.The belt conveyor belt detection device comprises a tensile testing machine body, a detection mechanism is arranged on the tensile testing machine body and comprises a detection control box, and the detection control box is fixedly connected to one side of the tensile testing machine body; the movable cross beam is located in the middle of the tensile testing machine body, the fixed cross beam is fixedly connected to the bottom of the tensile testing machine body, the bottom of the movable cross beam and the top of the fixed cross beam are both connected with driving assemblies, and tension sensors are arranged between the movable cross beam and the corresponding driving assemblies and between the fixed cross beam and the corresponding driving assemblies. The clamping mechanism is fixedly connected to one side of the driving assembly. According to the rotatable clamping assembly, a proper clamp assembly can be conveniently selected according to the outline of a belt, so that better clamping and fixing are facilitated, and meanwhile, the clamp assembly can be conveniently replaced after being abraded or damaged.

The invention provides constructional engineering reinforcing steel bar quality detection equipment, and relates to the technical field of reinforcing steel bar quality detection.The constructional engineering reinforcing steel bar quality detection equipment comprises a detection table, clamping assemblies are arranged at the two ends of the top of the detection table, each clamping assembly comprises a vertical plate, the vertical plates are fixed to the two ends of the top of the detection table, and shaft rods are rotationally installed on the inner side surfaces of the vertical plates through bearings; a driving motor is fixed to the outer end of a vertical plate on one side of the detection table, the output end of the driving motor is fixedly connected with the shaft rod, two limiting assemblies are symmetrically arranged on the surface of the middle of the detection table, each limiting assembly comprises a base, and the bases are fixed to the detection table. Two steel bars of the same specification can be fixed at the same time through the clamping assembly and the limiting assembly on the detection table and are used for bending resistance detection and tensile test respectively, independent tests of the two steel bars do not affect each other, the time for replacing the steel bars is saved, and the quality detection efficiency of the steel bars of the same specification is higher.

The utility model belongs to the technical field of wire harness testing devices, and discloses an automobile wire harness stretching testing tool which comprises a rack, a fixing seat is fixedly installed at the lower end of the rack, and a clamping mechanism is fixedly installed on the upper surface of the fixing seat. The automobile wire harness stretching test tool comprises a machine frame, a first air cylinder fixedly installed at the top of the machine frame, a movable plate fixedly installed at the end of an output shaft of the first air cylinder, and a second air cylinder fixedly installed on the left side and the right side of the middle of the machine frame. In the one-way test process, the middle of the wire harness is stretched towards the two sides through simultaneous contraction of the two second air cylinders, the wire harness cable part is fixed through the clamping mechanism, the moving plate is driven to move upwards through contraction of the first air cylinders, the wire harness is stretched through the mounting block in the process, and therefore the stretching test of the wire harness is achieved; therefore, a multi-direction tensile test is performed on the wire harness, and the test accuracy of the wire harness is improved.

The application provides a kind of automobile fastener wire material tension testing device, it is related to tension testing device field, comprising: indicating component, the indicating component is by conversion mechanism and displacement sensor composition, test component can realize the tension testing of automobile fastener wire material, material is in the tension testing simultaneously, indicating component can real-time monitoring the deformation degree of material, test data is comprehensive and efficient, and indicating component can automatically control the opening and closing of deformation monitoring function according to test state, solve the single test effect of the tension testing device of existing automobile fastener wire material, since automobile fastener wire material has ductility, existing tension testing device can not record monitoring the deformation of material when testing, test data is not comprehensive enough.

The invention provides a stress and temperature detection method based on a multi-angle Lamb wave acoustic elastic effect, and belongs to the technical field of nondestructive detection.The method comprises the steps that a Lamb wave group velocity variation approximate model is built based on the influence of loading stress and temperature on the sample size; based on the acoustic elastic effect, a Lamb wave group velocity variation detection model is constructed; the method comprises the following steps: arranging a preset multi-angle piezoelectric patch based on a preset experimental sample, fixing the experimental sample on a tensile testing machine to obtain a stress experimental system, combining a Lamb wave group velocity variation approximation model to obtain a parameter change condition, verifying a detection model, and performing formula parameter inversion to obtain a stress test result. Solving unknown stress and temperature by using a verified Lamb wave group velocity variation detection model; the method solves the problems that the detection result of the existing stress detection method is greatly fluctuated along with the temperature change, the precision is low, the influence of the stress direction is difficult to accurately calculate, and the temperature influence is neglected.

This invention discloses a tensile strength testing device for leather production, belonging to the field of tensile testing technology. The device includes a testing platform with a base plate fixedly mounted on it. A hollow column and a component box are fixedly mounted on the base plate. A guide movement mechanism is installed inside the hollow column. The device also includes at least one pair of clamps. One side of the hollow column has a long groove and a short groove, and a support member is slidably installed in both the long and short grooves. The clamps are mounted on the support members. The support member in the long groove is mounted on the guide movement mechanism, and a tension spring is fixedly connected between the support member in the short groove and the bottom surface of the groove. Contact points and microswitches are respectively installed on the support member and the bottom surface of the short groove. The two clamps are synchronously stretched by the same guide movement mechanism. When either sample breaks, the microswitch of the broken sample is triggered, the fracture information is recorded, and tension continues to be applied to the other sample until it breaks.

The invention relates to the technical field of material mechanical property testing, and provides an ultralow-temperature slow strain mechanical tensile test platform which comprises a vacuum Dewar unit, a liquid helium temperature control unit, a slow strain tensile unit, a measuring unit and a control unit, the vacuum Dewar unit comprises a vacuum Dewar body and is used for providing a closed low-temperature test environment; the liquid helium temperature control unit comprises a direct injection module and a recovery module, the direct injection module is used for directly injecting liquid helium to the gauge length section of the sample for cooling, and the recovery module is used for recovering and recycling unevaporated liquid helium; the slow strain stretching unit is used for stretching a sample arranged in the vacuum Dewar body at a low strain rate; the measuring unit is arranged in the vacuum Dewar body and is used for monitoring the temperature, the force value and the strain data of the sample in real time. Liquid helium is used as a cold source, the liquid helium is directly aligned to the gauge length section of the sample through the direct injection module, and compared with a traditional liquid helium steam natural convection heat exchange mode, the heat exchange coefficient is increased, and automatic precise temperature control is achieved.

The invention belongs to the technical field of hydrogen sulfide stress corrosion resistance detection of oil well pipes, and particularly relates to a method for testing the influence of anodic dissolution in saturated hydrogen sulfide on stress corrosion fracture of an oil well pipe, which comprises the following steps: respectively carrying out slow strain rate tensile tests in a saturated hydrogen sulfide environment and a nitrogen environment to obtain a stress-strain curve of an oil well pipe sample; measuring a hydrogen permeation curve of the oil well pipe sample in the saturated hydrogen sulfide environment; carrying out fast and slow sweep potential polarization curve test and hydrogen permeation curve test on the oil well pipe, and carrying out hydrogen charging-slow stretching test on the oil well pipe under the cathode hydrogen charging potential corresponding to the steady-state hydrogen permeation current density; and according to the damage degree of the saturated hydrogen sulfide environment to the mechanical properties of the oil well pipe, the minimum influence degree of hydrogen in the saturated hydrogen sulfide environment to the stress corrosion fracture of the oil well pipe is determined by combining the damage degree of hydrogen separated out from the cathode reaction to the mechanical properties of the oil well pipe. The device has the advantages of simplicity in operation and accurate measurement result.

The invention provides a stretching and bending performance testing mechanism for wire harness production and a testing method thereof, and relates to the field of wire harness stretching and bending performance testing. According to the stretching and bending performance testing mechanism for wire harness production and the testing method thereof, the stretching and bending performance testing mechanism comprises a testing table, and a supporting frame is fixedly installed at the top of the testing table. According to the invention, the displacement mechanism is driven to move by cooperating with the first driving device, so that one group of fixing mechanisms can flexibly move to adjust the supporting distance with the initial fixing end of the existing wire harness, and the lifting device is matched with the bending test device to be connected to provide driving force for the bending test device; the second driving device is connected and matched with the tensile testing device, so that the two groups of testing devices are both connected to the testing table, tensile testing and bending testing are integrated, tensile testing and bending testing operations are provided for the wire harness in different directions, and the wire harness is relatively flexible and convenient to fix; the supporting distance and the supporting tension can be adjusted according to the specification of the wire harness.

The invention relates to a geosynthetic material tensile test device, and belongs to the technical field of geosynthetic material test equipment. Comprising a plurality of clamping mechanisms, a plurality of pressure adjusting mechanisms, a plurality of thrust adjusting mechanisms, a plurality of displacement mechanisms and a control mechanism. The multiple sets of clamping mechanisms sequentially clamp the two sides of the geosynthetics in the width direction in the length direction of the geosynthetics, the pressure adjusting mechanisms penetrate through the clamping mechanisms, the clamping mechanisms are slidably installed on the displacement mechanism, and the multiple thrust adjusting mechanisms are connected with the multiple sets of clamping mechanisms in a one-to-one correspondence mode. The two ends of the geosynthetics in the length direction are connected with tension equipment, a first pressure sensor is arranged between the geosynthetics and the clamping mechanism, and a second pressure sensor is arranged between the thrust adjusting mechanism and the clamping mechanism. According to the invention, the quantitative relation among the longitudinal tensile strength, the normal load and the transverse tensile strength of the geosynthetic material in the soil can be explored at a relatively low test cost.

The invention relates to a contact type heating high-temperature tensile test system suitable for plates in the technical field of material high-temperature mechanical property testing, and the system comprises a loading module which is used for being connected with a testing machine and cooperating with a clamping module to apply an acting force to a sample so as to realize a tensile process; a heating block of the heating module is controlled by an air cylinder with a free stroke to move so as to be tightly attached to the sample for heating, and a window for observing the sample is formed in the external heat preservation box; according to the device, a contact type heating mode is adopted to achieve heating of a sample piece, the heating speed is high, the sample is heated evenly, the sample can rotate by 90 degrees, heating and strain measurement are achieved respectively, laser temperature measurement and the heating rod are coupled through the temperature controller, accurate control over the temperature is achieved, and the device is simple in structure, convenient to operate and high in practicability. The high-temperature area and the normal-temperature area are separated by a thermal insulation material, and the high-temperature area adopts clearance fit to ensure sufficient thermal expansion space of the pin, so that high-temperature adhesion is prevented.

The invention provides a tensile testing device for a protective film, and relates to the technical field of tensile detection.The tensile testing device comprises a base, a conveying assembly is arranged at the top of the front end of the base, the conveying assembly comprises a conveying table, limiting plates are arranged on the two sides of the top of the conveying table, a testing assembly is arranged at the top of the middle of the base, and the testing assembly comprises a first sliding rail; the testing assembly comprises two sets of first sliding rails, a vertical plate is slidably installed at the bottoms of the first sliding rails, a side plate is fixed to the bottom of the vertical plate, an upper clamping plate is slidably installed at the upper end of the inner side of the side plate, and a lower clamping plate is rotatably installed at the lower end of the inner side of the side plate. When the protective film is broken, the upper clamping plate and the lower clamping plate on the two sides withdraw outwards along with the elastic force of the spring telescopic rods and are separated from the bidirectional cylinder for testing, the moving distance of the current cylinder can be measured, the bidirectional cylinder is prevented from further stretching out, and the accuracy of the tensile test of the protective film is improved.

The invention relates to the technical field of material testing, and particularly discloses railway pre-buried channel tensile test equipment which comprises a testing machine body, a movable cross beam is slidably connected to the inner wall of the testing machine body, a clamp assembly is fixedly installed on the outer surface of the testing machine body, and a channel test piece is arranged in an inner cavity of the clamp assembly. The test piece can be quickly disassembled and assembled through the clamp assembly, meanwhile, the double-fixing effect is achieved, the stability of the clamp is improved compared with a traditional clamp, the initial inclination of the test piece can be detected during stretching, meanwhile, sliding can be prevented in the stretching process, an alarm can be given out in time when sliding is generated, and the work efficiency is improved. The material performance is accurately judged, the test equipment can have a certain buffering effect through the buffering assembly when the test piece is fractured, the influence of vibration of fracture vibration on the equipment is reduced, and fatigue damage, caused by vibration, of the equipment can be effectively reduced.

The invention provides a wire harness joint connection strength testing device, and relates to the technical field of wire harness detection, and the wire harness joint connection strength testing device comprises a strength detection table, a servo motor is fixedly connected to the middle of the strength detection table, a rotating table is fixedly connected to the upper end of a rotating shaft of the servo motor, and an outer lock disc is fixedly connected to the center of the upper surface of the rotating table; the inner lock disc is tightly and slidably connected into the outer lock disc, and six joint outer sockets are formed in the upper edge of the outer lock disc, so that parallel processing of a'test flow 'and a'sample loading and unloading flow' is realized, the turnover time of a test unit is shortened, idle personnel and equipment caused by procedure waiting is eliminated, and the test efficiency is improved by optimizing the full cycle of a production harness test. The problems that if wire harnesses are tested in batches, a tension test machine needs to be used for carrying out tension test on a plurality of wire harnesses in sequence, single-time manual clamping, tension and manual wire harness disassembly are carried out in sequence, the operation is tedious, the test efficiency is low, and the test work is not suitable for the test work of large-batch wire harness samples are solved.

The invention discloses a protective film tensile strength automatic detection device and a detection method thereof, and relates to the technical field of film tensile strength detection.The protective film tensile strength automatic detection device comprises a tensile testing machine, the tensile testing machine comprises a rigid rack, a movable cross beam and a bidirectional clamp, and further comprises an air permeability detection mechanism; the air permeability detection mechanism comprises an air blowing assembly and an airflow detection assembly which are symmetrically arranged on the two sides of the membrane material sample and is used for synchronously detecting the air permeability in a stretching state. The problems that in the prior art, a waterproof breathable film meets the requirements for dynamic tensile stress and breathability at the same time in actual application, and due to the fact that traditional independent testing cannot quantify the relation between tensile deformation and breathability, static data overestimate the real performance of a material under the actual working condition, and the risk of structural failure is caused are solved. The device has the advantages that synchronous dynamic detection of the air permeability of the protective film in the stretching process is achieved through integrated design, and the material performance attenuation rule under the actual working condition is quantified.

The invention relates to the technical field of data line performance testing, in particular to a data line tensile property testing device and method. The data line tensile property testing device comprises a base, a static clamp, a linear guide rail, a driving mechanism, a sliding platform, a force value sensor, a dynamic clamp, a displacement sensor and a visual inspection mechanism. The device is used for continuously recording the whole stretching test process, real-time visual recording of the apparent deformation and damage process of the data line is achieved, the defect that process monitoring is incomplete is overcome, meanwhile, after the test is finished, the height of the annular mounting frame is adjusted through the position adjusting assembly, and the measurement accuracy is improved. According to the method, the high-resolution area-array camera is close to the failure part of the data line, so that a high-definition image is obtained, a data basis is provided for three-dimensional reconstruction by adopting a photogrammetry or stereoscopic vision algorithm, high-precision three-dimensional shape analysis of the failure part of the data line is realized, and the problem of inaccurate analysis is solved.

The invention discloses a tensile property detection device and method for cable processing, and relates to the technical field of performance detection.The tensile property detection device comprises a tensile testing machine, two mounting seats which are distributed up and down are fixedly mounted on the tensile testing machine, wire winding frames are mounted in the mounting seats, and each wire winding frame comprises a fixed mounting seat, a winding rod and a clamping mounting seat; the fixed mounting seat is located on one side of the clamping mounting seat, the rolling rod is fixedly connected between the fixed mounting seat and the rolling rod, a fixing mechanism is mounted in the fixed mounting seat, and a clamping mechanism is mounted in the clamping mounting seat; the cable is wound on the winding rod on the winding frame by two or more layers, mutual friction limitation is achieved through the contact faces between the outer surfaces of the cable winding parts for fixing, the cable is clamped and fixed through a larger stress face, the problem that the cable is broken at the stress point position of the clamping and fixing position is solved, and the cable winding efficiency is improved. And the final tensile property detection data of the cable is more accurate.

The invention discloses a method for testing the peel strength of a battery cell pole piece, which comprises the following steps of: attaching a pole piece sample on a substrate adhered with a double-sided adhesive tape, wherein the area of a sample testing area is less than or equal to 100mm, an active layer is adhered towards the substrate, and a clamp connecting area is a single-layer foil; and performing a surface peeling test through a tensile machine, and calculating the peeling strength P (N / cm) according to the ratio of the maximum tensile force value to the area of the test area. According to the method, a test unit is reduced from a traditional strip sample to a small-area sample, and the method can be used for evaluating the bonding strength of small-scale test samples, leftover materials and micro-areas; and a surface stripping mode is adopted, so that the bonding force is intensively reflected, and the measurement precision and sensitivity are improved. And meanwhile, multi-point sampling is supported, and the coating uniformity of the pole piece can be counted and analyzed.

The utility model relates to the technical field of calibration tools, and discloses a calibration tool suitable for a tensile torsion test platform, the tensile torsion test platform comprises a tensile testing machine and a torsion testing machine, and the calibration tool comprises a tensile calibration tool and a torsion calibration tool. The tensile calibration tool comprises a tension bar, a tensile sensor, a first connecting flange and a second connecting flange, the torsion calibration tool comprises a torsion bar, a torque sensor, a third connecting flange and a fourth connecting flange, and the two ends of the tensile calibration tool or the two ends of the torsion calibration tool are connected with the driving end of the tensile testing machine and the driving end of the torsion testing machine respectively. Preset loads are loaded through the tensile testing machine and the torsion testing machine, detection values obtained by the tensile sensor and the torque sensor are compared with load values loaded by the tensile testing machine and the torsion testing machine, and finally the preset load value loaded by the tensile and torsion testing platform is calibrated. The method has the characteristics of accurate calibration result and convenience in operation.

The utility model relates to the technical field of clamps, and particularly discloses a clamping mechanism for a tension tester, which comprises a screw rod and a clamping unit, the clamping unit comprises a clamping bin, two groups of mounting components, a clamping piece component, a vertical plate, studs and nuts, the two groups of mounting components are respectively and fixedly connected with the clamping bin, each group of studs is respectively and fixedly connected with the clamping bin, and the vertical plate is fixedly connected with the clamping bin. The vertical plate is arranged on one side of the clamping bin, the multiple sets of nuts are arranged, each set of nuts is in threaded connection with the corresponding stud and arranged on the outer surface wall of the corresponding stud in a sleeving mode, the two sets of clamping piece assemblies are embedded in the clamping bin, and the two sets of screws are in threaded connection with the vertical plate. According to the clamping device, a test sample can be stably clamped, and the clamping force can be continuously improved in the process of continuously applying tension, so that the clamping device cannot loosen in the clamping process, the accuracy and the stability of tension test data are improved, and the tension detection error is reduced.

The utility model relates to the technical field of rubber sealing rings, and discloses an O-shaped rubber sealing ring tension testing device which comprises a base, a mounting groove is formed in the right side of the top of the base, the surface of a lead screw is in threaded connection with a threaded block, and the left end of the top of the threaded block is fixedly connected with a first drag hook. A baffle is fixedly connected to the left side of the top of the base, a tension meter is arranged on the left side of the baffle, a second pull hook is arranged at the right end of the tension meter, a mounting block is fixedly connected to the left side of the top of the base, a threaded rod is in threaded connection with the interior of the mounting block, and a limiting block is fixedly connected to the inner side of the threaded rod. The installation block, the threaded rod and the like are arranged to be matched with the baffle for use, the threaded rod is rotated to drive the limiting block to be separated from the tension meter, locking of the tension meter is relieved, at the moment, a worker can replace the tension meter, operation is easy and convenient, the whole testing device does not need to be replaced, the use cost is reduced, and the worker can use the device conveniently.

The invention relates to the field of electronic device drawing test equipment, in particular to drawing test equipment which comprises a carrier plate, a pressing assembly, a pulling assembly and an adjusting assembly. The adjusting assembly comprises a first adjusting air cylinder and a second adjusting air cylinder, the output end of the first adjusting air cylinder is connected with the downward-pressing air cylinder, and the output end of the second adjusting air cylinder is connected with the upward-pulling air cylinder. Through the arrangement of the adjusting assembly, when the part locking position and the pulling force applying position deviate due to the size change of the panel, the first adjusting air cylinder and the second adjusting air cylinder are matched, so that the position change of the part is caused by the size change of the panel; the positions of the downward pressing air cylinder and the upward pulling air cylinder can change according to the size of the panel, so that the position of the downward pressing air cylinder and the position of the upward pulling air cylinder always correspond to the position of a part on the panel, panels of different sizes are adapted, the influence of size change on a test result is reduced, and the accuracy of the test result is improved.

The utility model relates to the technical field of copper alloy stretching detection, and particularly discloses a high-strength and high-conductivity copper alloy stretching detection device which comprises a supporting frame, two groups of front baffles are mounted at the front end of the supporting frame through hinges, glass panels are arranged in the middles of the front baffles, magnets are arranged between the front baffles and the supporting frame, and the front baffles are arranged on the supporting frame. The magnet is fixed to the upper side of the front end of the supporting frame, an iron sheet matched with the magnet in position is fixedly installed on the inner surface of the front baffle, and a trigger assembly is installed on one side of the magnet. The trigger assembly comprises an insertion rod penetrating through the interior of the supporting frame, an electric contact installed in the supporting frame is arranged at the rear end of the insertion rod, a limiting plate is fixedly arranged at the front end of the insertion rod, and the surface of the insertion rod is sleeved with a reset spring. According to the utility model, the front baffle plate is matched with the trigger assembly, and when the front baffle plate is closed, the movable electrical contact and the fixed electrical contact on the insertion rod can be propped against each other, so that the circuit access of the stretching cylinder is realized, and a stretching test can be carried out.