263 results about "Torsion test" patented technology

A performance testing apparatus and testing method for a data cable, belonging to the technical field of data cable performance testing. An arranged testing unit (2) can carry out three separate testing contents, namely a tensile strength test, a torsion test, and a wear resistance test on the basis of testing sequence requirements, and can also separately carry out pairwise combination tests or simultaneous testing of three items, so that a testing result is ensured to be more accurate while the testing contents are flexible. A positioning unit (3) comprises a fixture which consists of a set of a rubber pad one (340) and a rubber pad two (3710) that are oppositely arranged and which is in contact with the data cable. A rubber material is unlikely to damage the outer skin of a data cable, and the end surfaces of the rubber pad one (340) and the rubber pad two (3710) in contact with the data cable are arranged in a concave-convex shape, so that the data cable is better fixed and clamped, thereby preventing the two ends of the data cable from being loosened during testing and affecting testing progress and testing results.

The present invention relates to the technical field of cables, and specifically relates to a 35 kV torsion-resistant cable for a wind turbine, which is composed of a cable core and a ground wire. The cable core and the ground wire are covered and fixed by a torsion-resistant strengthening layer and an outer sheath layer; the torsion-resistant cable provided by the present invention has a perfect appearance after 10,000 times of 1080° forward and reverse torsion tests at normal temperature and 5,000 times of 1080° forward and reverse torsion tests at low temperature. After torsion, a voltage of AC 50 Hz 73.5 kV is applied for 60 minutes of voltage withstand, and no breakdown phenomenon occurs, having excellent anti-torsion performance.

The utility model relates to the technical field of battery testing, in particular to a tensile and torsion-resistant testing tool assembly, which comprises a connecting piece, a tensile tool assembly and a torsion-resistant tool assembly. The connecting piece is welded to the pole, and the stress part of the connecting piece protrudes out of the first side face. The tensile tool assembly comprises a first supporting plate provided with a first avoiding notch, the connecting piece is located at the first avoiding notch so that the stress part and the pole can be located on the two sides of the first supporting plate in the first direction, the tensile equipment can pull the stress part in the first direction, the pole can be indirectly subjected to tensile force, and the tensile test of the pole can be conducted. The torsion-resistant tool assembly comprises a second supporting plate and a third supporting plate, when the thrust equipment pushes the stress part in the second direction, the second side face abuts against the second supporting plate, the third side face abuts against the third supporting plate, and the second direction is parallel to the side edge, intersecting with the end face, of the first side face. And when the thrust equipment pushes the stress part along the second direction, the post terminal is subjected to a force in a direction tangent to the side wall of the post terminal, so that the torsion resistance test of the post terminal is carried out.

The invention discloses an automobile part testing device, which relates to the technical field of automobile part testing and comprises a base and a support, a driving mechanism is arranged in the base, a first clutch mechanism is connected between an output part of the driving mechanism and a lifting mechanism, and a transmission mechanism is arranged between a torsion shaft and the first clutch mechanism. A second clutch mechanism is arranged between the transmission mechanism and the torsion shaft, the clamp comprises a clamping seat, two symmetrically-distributed clamping blocks are slidably connected to the two sides of the interior of a clamping groove, a pressing mechanism is arranged in the clamping seat, and a tensioning buffering mechanism and a torsion tensioning mechanism are arranged on a connecting seat. According to the invention, both a tension test and a torsion test can be carried out, so that two test instruments do not need to be prepared, and the test cost can be reduced; and moreover, the clamping stability of the clamp can be improved, and relative sliding or rotation between the clamp and the workpiece is avoided, so that loosening between the clamp and the workpiece during a tension test or a torsion test is avoided, and normal proceeding of the tension test is ensured.

The invention relates to a wind power tower bending shear torsion test loading anti-interference decoupling switching integrated device, which comprises a reaction wall, a support, a reaction column, a reaction longitudinal beam, a reaction cross beam and four actuators, and is characterized in that the top end of a fixed tower on the support is connected with a loading beam through a switching device; the first actuator applies axial load to the tower drum through the loading beam and the switching device, the second actuator and the third actuator apply bending moment to the end of the tower drum through the loading beam and the switching device, the fourth actuator is matched with the connecting piece, the rectangular steel plate is connected with the switching device to apply horizontal shearing force and torque to the end of the tower drum, and application and decoupling of various types of loads are achieved. The test precision is ensured; the device can truly simulate the load condition of the tower drum section, can also be matched with the loading beam to transmit the axial force, the bending moment, the shearing force and the torque to the wind power tower drum, and effectively solves the influence of horizontal displacement and torsional deformation on loading in the horizontal and vertical load coupling loading process in the wind power tower drum composite load simulation test.

The invention relates to the technical field of fatigue detection, and discloses a microcomputer-controlled fatigue test device which comprises a workbench, a turntable and a limiting mechanism are installed on the workbench, the turntable is driven to rotate, the limiting mechanism is fixedly connected to the workbench and located in a hole in the center of the turntable, and a swing mechanism is installed on the turntable. The swing mechanism is installed at the eccentric position of the rotating disc, a first installation block capable of swinging is arranged on the swing mechanism, the first installation block extends to the position over the limiting mechanism, one end of a cable to be detected is installed on the first installation block, and the other end of the cable to be detected is installed on the limiting mechanism; through cooperation of the swing mechanism and the rotating disc, the cable is initially vertically arranged, and the swing mechanism and the rotating disc can drive the vertically arranged cable to carry out torsion test, bending test and bending and torsion superposition test, so that the detection of the cable can better fit the use environment of the cable; and the accuracy of data testing is improved.

The utility model discloses a cable torsion resistance test device, which comprises a worm and gear reducer, a dynamic torque sensor, a torsion transmission shaft, a bearing seat, a cable fixing clamp, a screw rod sliding table, a linear guide rail sliding group, a counterweight and a servo motor, the servo motor is connected with the worm and gear speed reducer; the output end of the worm and gear speed reducer is connected with a dynamic torque sensor; one side of the dynamic torque sensor is connected with a torsion shaft; the torsion shaft is supported by a bearing seat; one side of the torsion shaft is connected with one end; the two ends of the cable are fixed through cable fixing clamps. The cable fixing clamp located on one side of the torsion shaft fixes the connecting end of the cable and the torsion shaft. The cable fixing clamp on the other side is arranged on the screw rod sliding table; the lead screw sliding table is installed on the linear guide rail sliding set. The other end of the cable is connected with the counterweight through a connecting piece. The device has the advantages of simple structure, low cost and the like, and the torsion resistance of different cables can be confirmed by comparing and measuring the measurement results of the different cables under the same test condition.

The invention belongs to the field of fatigue testing devices, and provides a microcomputer-controlled high-low temperature vertical torsional fatigue testing machine which comprises a machine base, vertical frames installed on the upper surface of the machine base, upper cross beams installed on the top walls of the two vertical frames, lifting cross beams slidably installed on the inner walls of the vertical frames, a first motor installed in an inner cavity of the machine base, and a speed reducer installed at the output end of the first motor. The clamping assembly comprises a torsion clamp and an upper clamp; the first lifting assembly controls the lifting cross beam to ascend and descend; a high-low temperature box; a high-temperature furnace; by arranging the clamping assembly, the first lifting assembly, the second lifting assembly, the high-low temperature box and the high-temperature furnace, the temperature of the torsion test covers a wide temperature range from extreme high temperature to deep cooling, and the thermal-mechanical coupling fatigue characteristics of a material in multiple scenes such as high-temperature creep and cold and hot impact can be accurately simulated.

The utility model relates to a lock cylinder offset angle torsion plugging test device, comprising a bottom plate, two sides of the bottom plate are respectively provided with a servo screw module and a fixed pedestal, a sliding table of the servo screw module is fixedly connected with a motor seat, the motor seat is fixedly connected with a servo driving assembly, and the servo driving assembly is fixedly connected with a servo motor. A rotating shaft of the servo driving assembly is fixedly connected with a tension-torsion combined type sensor, the detection end of the tension-torsion combined type sensor is fixedly connected with a key seat, the fixed base is provided with a longitudinal lead screw adjusting module, a movable table of the longitudinal lead screw adjusting module is fixedly connected with a lifting seat, and the two ends of the lifting seat are fixedly connected with bearing seats. Each bearing seat is rotationally connected with a fixing seat support, a transverse lead screw adjusting module is arranged between the two fixing seat supports, and a jig fixing seat is fixedly connected to a moving table of the transverse lead screw adjusting module. The beneficial effects of the utility model are that the plug-pull and torsion test of the lock cylinder can be carried out synchronously, and different test requirements of the automobile lock cylinder can be satisfied.

The invention relates to the technical field of conductive wire rod detection, and discloses a conductive wire rod bending life testing device applied to a new energy automobile, which comprises a testing machine main body and two support frames, and further comprises a rotating frame rotationally mounted between the two support frames, and a plurality of rotating seats are rotationally connected to the rotating frame; the lower portion of the rotating seat is provided with a through hole for a conductive wire to penetrate through, the bottom of the rotating seat is fixedly connected with a wire bunching ring, and a torsion mechanism is jointly installed between the rotating frame and one of the supporting frames and used for driving the rotating seat to rotate. The driving assembly and the driving assembly cooperate with each other, and in the synchronous process that the rotating frame drives the conductive wire to complete a bending test, the precise cooperation of the driving disc and the guide wheel can drive the connecting rod to do reciprocating motion in the horizontal direction, so that the rotating seat is driven to rotate around the axial direction of the rotating seat, and the torsion test of the conductive wire is achieved. The complex stress state of the conductive wire of the new energy automobile in the actual working condition can be truly simulated through the composite motion mode.

The invention relates to the technical field of cable preparation, in particular to an ABS composite cable for an automobile and a preparation method thereof, and the method comprises the steps: twisting a plurality of copper wires according to a preset twisting pitch to obtain a conductor, and carrying out the torsion test of the conductor; acquiring position information of copper wires of the conductor before and after the torsion test; determining the fastening degree of the conductor after the torsion test based on the position deviation of the base point copper wire in the conductor before and after the torsion test; based on the fastening degree of the conductor after the torsion test, the preset twisting pitch is determined to be adjusted or the conductor is determined to be coated with an insulating layer according to different coating tracks to obtain an insulated conductor; and determining further preparation of the composite cable based on the coating uniformity degree of the insulated conductor and the coating track or adjusting the coating process of the insulating layer based on the distribution uniformity degree of pores. According to the invention, the insulation performance of the ABS composite cable is improved by improving the control accuracy of the coating process of the insulating layer.

The invention relates to the technical field of torsion tests, and discloses a high-speed transmission shaft torsion fatigue strength detection device which comprises a workbench, a torsion machine base and a detection machine base arranged on the top of the workbench, and an overload disconnection protection mechanism. The output end of the torsion machine base is in butt joint with a transmission shaft a through an overload disconnection protection mechanism, and the overload disconnection protection mechanism is used for judging the state of the transmission shaft a and disconnecting torsion output when the transmission shaft a is in a torsion bending state to prevent the transmission shaft a from being broken. The overload disconnection protection mechanism is arranged on the basis of traditional detection equipment, state detection is carried out on the transmission shaft a in torsional fatigue strength detection, whether the transmission shaft a of the detection part has a breaking risk or not is predicted, and meanwhile torsion output of the equipment can be rapidly interrupted when it is judged that the transmission shaft a is in an abnormal state; and the torsion applied to the transmission shaft a is released, so that the transmission shaft a in an abnormal state is prevented from being broken due to continuous stress.

The utility model provides a torsion test device for a damper spring of a clutch driven plate. The device specifically comprises a first rack, a second rack, a torsion loading mechanism, a transmission mechanism and a clamping mechanism. The first rack and the second rack are oppositely arranged; the torsion loading mechanism is connected with the first rack; one end of the transmission mechanism is connected with the torsion loading mechanism, and the other end of the transmission mechanism is connected with a driven disc to be detected; the clamping mechanism is connected with the second rack, a clamping space is formed in the side, facing the transmission mechanism, of the clamping mechanism and used for clamping the driven disc, and the transmission mechanism is provided with a clamping position which moves towards the side of the clamping mechanism so as to clamp the driven disc; when the transmission mechanism is located at the clamping position, the torsion loading mechanism applies torque to the driven disc through the transmission mechanism to rotate so as to carry out reliability test on the driven disc and the damper spring located on the driven disc. The problem that the reliability of the clutch driven disc, especially the pre-damping spring, is not verified in the prior art is solved.

A torsion testing machine of a metering box belongs to the technical field of metering box testing. Which comprises a case (14) and is characterized in that the upper surface of the case (14) is provided with a fixing and clamping assembly used for fixing the bottom of the metering box, the upper portion of the case (14) is provided with a lifting frame (3) in a liftable mode, a torque arm (6) is arranged below the lifting frame (3), and the two ends of the torque arm (6) are provided with measuring and clamping assemblies used for clamping the top of the metering box. And the upper part of the lifting frame (3) is also provided with a driving mechanism which is used for driving the torsion arm (6) to rotate and applying torsion to the metering box. In the torsion testing machine of the metering box, the bottom of the metering box is fixed through the fixed clamping assembly, and the top of the metering box is clamped and torsion is applied through the measurement clamping assembly, so that the torsion test of the metering box is realized. The lifting hand wheel simultaneously achieves synchronous lifting of the lifting rods at the four corners through the lifting wheel shaft, the main transmission shaft, the auxiliary transmission shaft and the reverser.

The invention discloses an insulator quality detection device with an intelligent clamping function, and relates to the technical field of electric power equipment detection.The insulator quality detection device comprises a detection box, a driving unit, an anti-movement unit, an intelligent clamping unit and a composite insulator, and the detection box is used for installing and fixing the driving unit, the anti-movement unit, the intelligent clamping unit and the composite insulator; the driving unit is used for providing torsional force, the anti-movement unit is used for preventing axial movement of the composite insulator in the test process, the intelligent clamping unit is used for clamping the composite insulator, and after the composite insulator is clamped and fixed through the intelligent clamping unit, the torsional force is provided through the driving unit for torsion test. Through the anti-play unit, the composite insulator is prevented from axial play in the rotation process, and the situation that the axial play introduces extra friction force and changes the stress state, and consequently the measured torque value is not pure, and the test result is not accurate is avoided.

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.

A comprehensive mechanical property test board for a hinged bogie of a trackless carry-scraper relates to the technical field of mechanical property test and comprises an integrated platform which is respectively provided with a tensile compression test assembly and a torsion test assembly; the tension and compression test assembly comprises a supporting rack, a mounting side plate is fixed on the upper surface of the supporting rack, and a tension and compression loading module is telescopically arranged on the mounting side plate; the tension and compression loading module comprises a compression jacking head, and a pressure sensor is arranged on the side end face of the compression jacking head; a stretching chuck is fixed to the peripheral wall, close to the tail end, of the compression jacking head, four stretching clamping jaws are arranged on the stretching chuck in a sliding and telescopic mode, and tension sensors are arranged on the stretching clamping jaws. The test board solves the problems of dispersed test, low efficiency, manual dependence, insufficient precision, unstable platform, poor universality and the like when comprehensive mechanical property test is carried out on the hinged bogie of the trackless carry-scraper in the prior art.

The application discloses a bidirectional hydraulic feedback type tension-torsion static pressure bearing mechanism, relates to the tension-torsion test technical field, and oil is supplied to two symmetrical static pressure oil cavities through a bidirectional hydraulic feedback type throttler; during work, oil flows to the liquid inlet of two liquid inlet guide columns, and part of oil from one liquid inlet guide column flows to the oil cavity through a liquid inlet throttling hole to form pressure oil, and the other part of oil flows to the oil cavity through a liquid outlet gap to release pressure; when the bearing rotating shaft approaches a certain static pressure oil cavity, the oil pressure of the corresponding oil cavity rises, the elastic diaphragm is pushed up to the other side to be elastically deformed, the distance between the elastic diaphragm and the other liquid inlet guide column is reduced, more oil flows to the liquid inlet throttling hole, the oil pressure of the other oil cavity is raised, the elastic diaphragm is reversely pushed back, and then the bearing rotating shaft is reversely pushed back, so that the bearing rotating shaft is in a balanced state, the deviation correction operation can be automatically completed, friction is reduced, the real modal response of the measured object can be truly reflected, and the service life is prolonged.

The application discloses an industrial cable surface defect detection device, which comprises an industrial cable and a torsion detection support matched and installed outside the industrial cable, and cable storage racks are matched and placed at the left and right ends of the torsion detection support; the torsion detection support comprises a rectangular frame and a first rotating assembly fixedly installed outside the rectangular frame. The application provides an industrial cable surface defect detection device, through the arrangement of a cable surface detection assembly, after the torsion test of the industrial cable, the wear condition of the industrial cable surface can be detected through the cable surface detection assembly, and the wear condition of the industrial cable surface can be fed back in time; through the arrangement of the cable surface detection assembly, the industrial cable surface defects can also be detected, and since two detectors and the first rotating assembly are arranged, the industrial cable surface can be detected in all directions, and the industrial cable surface defect detection device is suitable for use.

The invention discloses a gear shaft static torsion test device and method, and belongs to the technical field of torque test equipment, and the gear shaft static torsion test device comprises a mounting part and a loading part; a mounting space is arranged on the mounting part and is used for mounting an accessory transmission casing; a loading disc is arranged on the loading part and is in transmission connection with a gear shaft of the accessory transmission casing; the loading part is also provided with a first pull rope and a second pull rope; one end of the first pull rope is wound on the loading disc in the circumferential direction of the loading disc, and the other end of the first pull rope extends towards one side of the loading disc in the horizontal direction; one end of the second pull rope is wound on the loading disc in the circumferential direction of the loading disc, and the other end of the first pull rope extends towards the other side of the loading disc in the horizontal direction. The gear shaft of the accessory transmission casing can be prevented from generating additional shearing force, the accuracy and reliability of the examination result of the static torsion test are ensured, and the torque loading range during the examination of the static torsion test is expanded.

The utility model discloses a steering wheel rim torsion test fixture which comprises a support frame and at least two clamping structures, the clamping structures are arranged in a central symmetry mode, one end of each clamping structure is detachably installed on the support frame, and the other end of each clamping structure can abut against a steering wheel rim and is used for clamping and fixing the steering wheel rim. The connecting structure is mounted on one of the clamping structures and is used for being connected with an external force application device so as to test the torsional strength of the steering wheel rim; through the clamping structure, the steering wheel rim is efficiently and stably clamped and fixed, the overall universality and adaptability of the clamp are improved, the working efficiency is high, the adaptability is high, and the connecting structure provides a stable and reliable torque transmission path for the torsional strength test of the steering wheel rim; the accuracy and consistency of torque application in the test process are ensured, and the accuracy and repeatability of test data can be improved.

The present application relates to the technical field of torsion test, in particular to a torsion test device and a test method thereof, the torsion test device comprises a base, two mounting seats are arranged on the base, a clamping mechanism is arranged on each mounting seat, the clamping mechanism comprises a first sleeve, a second sleeve is threadedly sleeved on the first sleeve, a clamping sleeve is inserted and arranged in the second sleeve, the clamping sleeve can move with the second sleeve and can expand and contract in the circumferential direction, and the clamping sleeve is used for clamping shaft workpieces; a guide sleeve is inserted and arranged between the clamping sleeve and the second sleeve, the guide sleeve and the clamping sleeve form a guide fit, so that the clamping sleeve can contract and clamp the shaft workpieces; one of the first sleeves can rotate around its own axis, and the rotating direction is opposite to the tightening direction of the second sleeve. Therefore, when the shaft workpieces are clamped, the appropriate clamping force is ensured, and when the torsion test is carried out, the clamping force can continuously increase with the torsional moment borne by the shaft workpieces, so that the clamping stability is ensured.

The utility model relates to the technical field of torsion testing, in particular to a torsion testing machine for parts, which comprises a workbench, a loading box is fixedly arranged on one side of the top of the workbench, a sliding table is slidably mounted on one side, far away from the loading box, of the top of the workbench, a screw rod is rotatably mounted at a position, corresponding to the sliding table, of the workbench, and the screw rod is movably mounted on the workbench. One end of the screw rod is provided with a moving motor, and the sliding table is fixedly provided with a force measuring box. By arranging the lifting assembly, the bearing assembly and the driving assembly, a sample shaft is fixed and supported through the supporting rollers, the height of the sample shaft is adjusted through the lifting assembly, the installation process is easier, the position of the sample shaft is conveniently adjusted in a rolling mode during clamping through the arrangement of rolling supporting of the supporting rollers, and the installation efficiency is greatly improved; meanwhile, when the height of the sample shaft is adjusted, the scales on the ruler plate can assist in adjustment, the accuracy of the position of the sample shaft is ensured, and a reliable basis is provided for subsequent torsion tests.

A stress-strain relationship estimation method according to the present invention comprises: a step (S1) for performing a torsion test on a first round bar test piece (10) to obtain a relationship between a torsion torque and a torsion angle; a step (S3) in which a torsion test is performed on a second round bar test piece (10) having a parallel section (11) having a smaller radius than the first round bar test piece (10), and the relationship between the torsion torque and the torsion angle is obtained; a step (S5) in which the relationship between the shear stress and the surface shear strain is obtained on the basis of the relationship between the torsion torque and the torsion angle obtained by the respective torsion tests of the first round bar test piece (10) and the second round bar test piece (10); and a step (S7) in which the shear stress and the surface shear strain are converted into uniaxial tensile stress and strain, and the relationship between the stress and the strain is estimated.

The present application relates to the technical field of torsion test, and discloses a camshaft torsion test device, which comprises an exhaust cam, an intake cam, a fixing base, a camshaft segment, an adapter, a first limiting piece, a second limiting piece, a connecting bolt and a nut, the camshaft segment comprises a body and a sleeve protruding from one end of the body, the exhaust cam and the intake cam are sleeved on the sleeve, the adapter is installed on the other end of the camshaft segment, the first limiting piece is used for limiting the rotation of the exhaust cam relative to the body, and the second limiting piece is used for limiting the rotation of the intake cam relative to the fixing base; the connecting bolt is threaded through the fixing base and the sleeve and is screwed with the body; the nut is screwed with the connecting bolt and is used for giving the fixing base a pre-tightening force, so that the fixing base, the intake cam, the exhaust cam and the body are tightly abutted in sequence, the adapter is connected with a torque wrench to provide a set torque value, and whether the exhaust cam and the intake cam have relatively rotated is observed to determine whether there is a use risk after installation.

The utility model relates to a clamping device for a box-shaped piece torsion test, the clamping device comprises a first clamp body, a second clamp body and a base, the first clamp body is jointed to the base at the top of the base, the first clamp body is provided with a first accommodating groove, and the second clamp body is provided with a second accommodating groove. By means of the first clamp body and the second clamp body, the two ends of the box-shaped piece to be tested can be detachably clamped in the first containing groove and the second containing groove respectively, so that the box-shaped piece can be stably and firmly fixed, the accuracy of test data of a torsion test is guaranteed, and the test efficiency is improved. And such a configuration of the clamping device contributes to rapid installation and removal of the box.

The application belongs to the technical field of cable test, and particularly relates to a cable torsion test device, which comprises a machine body, a door plate symmetrically connected to the outer wall of the machine body, a fixed lock box one and a fixed lock box two oppositely arranged in the machine body, an ultrasonic detector fixedly installed on the inner wall of the machine body, the ultrasonic detector arranged on one side of the fixed lock box one and the fixed lock box two, and a shaft block arranged between the fixed lock box one and the fixed lock box two. One end of the cable is inserted into the fixed lock box one through the block, the blocks in the groove box are pushed and extruded to move on the limited slide rod, when the one end of the cable is fixed in the fixed lock box one, the blocks are always adhered to the outer wall of the cable through the elastic pushing of the reset spring, then the shaft block is pushed to move to the fixed lock box two outside the cable, the blocks in the shaft block are elastically pushed to perform the smoothing operation on the surface of the cable, so that the surface of the cable is smoothed.

The present invention discloses a bending and torsion test method for a multifunctional valve test bench, which relates to the field of valve testing technology. The method comprises: obtaining the working environment information of the shut-off valve to be tested, the working environment information including the working environment pressure and the working environment temperature, obtaining the target pressure item and the target temperature item; obtaining the pressure range based on the target pressure item, obtaining the pressure range value, and obtaining the temperature extreme value based on the target temperature item. The present invention introduces a gas circulation module to add gas and adjust the pressure inside the shut-off valve to be tested, simulating the circulation process of gas inside the valve. During the test, the gas circulation module is combined with the test bending moment sub-item and the test torque sub-item respectively to test the valve. By comparing the first state item and the second state item corresponding to the first test item and the second test item, the impact of gas leakage and restart after leakage on the shut-off valve can be clearly understood.

The utility model discloses a sheet metal cover mounting production line of a linear motor stator, which is characterized by comprising a material basket lifting assembly, a feeding device, a torsion test device, a wiping device, a dispensing device, a sheet metal mounting device, a height detection device and a discharging device, the feeding device, the torsion testing device, the wiping device, the dispensing device, the sheet metal pasting device, the height detecting device and the discharging device are sequentially arranged in the first direction, and the bottoms of the devices are each provided with a machine table. The torsion test equipment, the wiping equipment, the dispensing equipment, the sheet metal pasting equipment and the height detection equipment are all provided with corresponding assembly lines and are used for transferring magnetic plates; a plurality of procedures such as feeding, torsion testing, wiping, dispensing, mounting, height detecting and discharging are integrated into a whole, a complete automatic production line is formed, manual intervention is reduced due to the integrated design, the production efficiency and the stability of product quality are improved, and the problems of errors and low efficiency caused by manual operation are solved.

The utility model relates to the technical field of equipment testing, and especially relates to a laser ranging telescope eyepiece adjusting torsion test tool comprising a housing, the top of which is provided with a through hole for accommodating a laser ranging telescope eyepiece; the test fixture is arranged on the through hole in the top of the shell and is provided with an inner wall matched with a lens cone of the laser ranging telescope so as to fix the lens cone of the laser ranging telescope; the torsion testing device is arranged in the shell, the eyepiece end of the laser ranging telescope can be clamped and rotated by the torsion testing device in the shell through the testing clamp, the PLC is arranged in the shell and used for controlling the torsion testing device, and the PLC is electrically connected with the torsion testing device. According to the utility model, the lens cone of the laser ranging telescope is fixed on the test fixture, the eyepiece end is clamped and rotated by the torsion test device, and the PLC controller controls the torsion test device to rotate, detects the actual torsion value, and compares the actual torsion value with a preset value so as to judge whether the laser ranging telescope is qualified or not.