39results about "Material strength using steady torsional forces" patented technology

The application relates to a device and a method for testing the bonding strength between a casing and well cement by using rotary torque, and belongs to the technical field of drilling material detection. The device comprises a test sample, a slip, a joint and a load applying device. Power is generated by a power device of a rotary dynamic torque tester to form rotary output, which drives a wellbore simulation casing to rotate. The wellbore simulation casing and a cement sheath fixed on a cementing cylinder are relatively displaced to form rotary torque. A torsion meter reads and records the torsion value when the cementing interface is damaged in real time, and the maximum value of the torsion value is taken as an index for representing the cementing strength. The device disclosed by the application is simple and convenient to operate, simple in structure, low in cost and reusable, and can be widely applied to the measurement and evaluation of the cementing performance of casings and well cement of different wellbore sizes.

The application discloses a power telescopic cable assembly which comprises a cable and a telescopic clamping assembly matched and installed outside the cable, and a heating assembly is matched and installed in the center of the cable outside. The application provides a power telescopic cable assembly, through the setting of a front-end clamping mechanism, a fastening mechanism and a rear-end clamping rotating mechanism, the clamping and fixing of the cable are realized, through the setting of a detection assembly, the subsequent defect detection of the cable is realized; through the setting of a heating assembly, the high-temperature-resistant environment of the cable is constructed, and the setting of a temperature detector is used for intuitively obtaining the surface temperature of the cable, so that the high-temperature-resistant detection of the cable is facilitated; through the setting of two symmetrical L-shaped heating fixing plates, after the high-temperature-resistant detection is completed, the two L-shaped heating fixing plates can be separated from the outside of the cable, and the detection assembly is used to timely detect the defects of the cable. The setting is compact in structure, timely in detection and suitable for actual detection.

This application discloses an in-situ mechanical testing system and method for aero-engine turbine blade materials. The system includes: a multi-axis loading unit for simulating the multi-axis stress state of turbine blades under actual operating conditions; a high-temperature environment module for achieving localized rapid heating of the sample; an in-situ observation system integrating a long-working-distance high-temperature microscope and a high-speed camera for real-time observation and recording of the microscopic damage evolution of the turbine blade sample during high-temperature loading; and a control unit with a built-in temperature-stress decoupling control model and a microscopic defect identification model for real-time compensation of the thermal effects of plastic deformation and quantification of the damage factor D. This application achieves synchronous loading of centrifugal force through a three-axis servo actuator, accurately reproducing composite stress with small load errors, overcoming the limitation of traditional single-axis testing in simulating multi-source loads on blades. Simultaneously, this application reduces interference from plastic work-induced temperature rise, solving the technical problem of data distortion caused by temperature drift in high-temperature testing.

The application provides a bolt and nut torsion and tension test device, and belongs to the technical field of fastener test devices. The bolt and nut torsion and tension test device comprises a bolt clamp, a force bearing pad and a loading pad block. The bolt clamp and the force bearing pad are used for being installed on a sensor module. The loading pad block is installed on the force bearing pad. The bolt clamp, the loading pad block and the force bearing pad or the former two are provided with a bolt through hole for the rod part of the bolt to pass through. The bolt clamp is provided with a rotation stopping groove for cooperating with the head part of the bolt to stop rotation. The rotation stopping groove is a U-shaped groove. Two groove side walls of the U-shaped groove are used for cooperating with two mutually parallel side faces of the head part to stop. The rotation of the bolt is stopped. Compared with the existing hexagonal hole, the structure is greatly simplified, the processing difficulty is reduced, and the processing efficiency is improved.

This invention discloses an integrated torsion and tensile testing machine, comprising a support frame. A clamping and fixing head is installed on one side of the support frame, and a power clamping device is fixedly installed on the other side of the support frame. A power drive mechanism is installed on the other side of the power clamping device, driving the power clamping device to rotate. Two sets of clamping mechanisms are installed in the clamping cavity, and the two sets of clamping mechanisms are staggered and distributed in the clamping cavity, with different clamping points in the length direction. This invention integrates torsion and tensile testing structures into one, simplifying the structure, significantly reducing the size and weight of the equipment, improving mobility and applicability. Furthermore, the fixing points of the clamping mechanisms on the workpiece can be easily changed by simply adjusting the power drive mechanism. The operation is simple and requires no additional tools, eliminating the need for manual disassembly and assembly, greatly shortening the preparation and replacement time for the test, and making the testing process more efficient and smooth.

This invention discloses a multidimensional mechanical fatigue testing system based on high-temperature environments, specifically relating to the field of testing machine technology. The system includes: a torsional fatigue testing module, a tensile-compressive fatigue testing module, a high-temperature environment control module, a servo-hydraulic control module, and a temperature influence correction unit. This multidimensional mechanical fatigue testing system based on high-temperature environments integrates torsional fatigue testing and tensile-compressive fatigue testing modules, enabling the simultaneous application of multidimensional alternating loads such as torsion and tension / compression. Simultaneously, the high-temperature environment control module dynamically adjusts the temperature, and combined with the temperature influence correction unit and a series of accuracy correction formulas, effectively eliminates the interference of high temperatures on material properties and sensor accuracy. It avoids data distortion caused by the lack of a systematic temperature correction mechanism, making the test results closer to actual service conditions and providing more reliable performance data for engineering applications.

The utility model discloses a table type material testing machine in the technical field of table type material testing machines, which comprises a base, and two hollow pipes are arranged above the base. According to the utility model, the two hollow pipes are arranged above the base, and the same sliding plate is inserted into the inner walls of the two hollow pipes in a sliding manner, so that during use, a user needs to clamp the two ends of an object through the clamping unit, then drives the rotating disc to rotate through the second driving unit, and further drives one end of the object to be detected to rotate; the detection unit can be used for detecting the resistance change in the rotating process of the rotating disc, so that the torsion is detected, a user can control the space height of the sliding plate through the first driving unit to adapt to different object lengths before the torsion is detected, the user can take down the two hollow pipes for transportation through the mounting unit in the transportation process, and the transportation efficiency is improved. Therefore, part of transportation space is saved.

The application discloses a kind of knitted fabric elasticity testing device, it is related to knitted fabric test technical field.The application includes: frame body, top is equipped with clamp;Rotary testing mechanism.The application reconstructs linear tensile path as rotary winding path, and the fabric is stretched by testing main body rotation, and it is automatically coated with profiled surface, simultaneously, by the friction between profiled surface and fabric, the real friction effect of fabric and human skin is simulated, to measure the deformation behavior and recovery performance of fabric in actual use, cooperate humidity simulation mechanism, can simulate the double influence of sweat on friction behavior and fiber mechanics performance when fabric is stretched, the application adopts the synergistic mechanism of rotary winding, profiled surface and dynamic wetting, simulates the stretching of fabric in joint position in the process of human movement, breaks through the limitation that traditional elasticity test only pays attention to axial performance, and test data is closer to actual wearing experience, and it is matched with actual elasticity performance of fabric.

This utility model relates to a bidirectional torque plate for an impact testing bench, comprising a torque plate body detachably mounted on a torque limiter under test. The torque plate body has lever arms extending radially to both sides, with each lever arm's end forming a torque-acting end mechanically connected to a force sensor. When the torque limiter under test is subjected to an impact load, the torque plate body tends to rotate clockwise or counterclockwise. When one lever arm applies pressure to the corresponding force sensor through its torque-acting end, the other lever arm applies tension to the corresponding force sensor through its torque-acting end, thus achieving bidirectional measurement of tensile and compressive forces. This utility model improves detection accuracy by canceling out the self-weight of symmetrical torque couples, effectively achieving precise control of the torque transmission path under impact load, thereby enhancing the stability and reliability of torque measurement data.

The application provides a drill strength comprehensive detection device, and mainly relates to the field of quality detection. The drill strength comprehensive detection device comprises a frame body, a containing cavity in the frame body, adjustment tracks arranged on both sides of the containing cavity, a stretching unit and a pressure unit slidingly arranged on the adjustment tracks, a torsion unit arranged at one end of the containing cavity, and an impact unit arranged at the rear side of the torsion unit. The torsion unit comprises a torsion clamp and a torsion motor arranged in rotation, the stretching unit comprises a stretching frame, a plurality of stretching sleeves are arranged on a mounting plate, a stretching clamp is fixedly arranged on the front side of a stretching plate, a stretching cylinder is arranged at the rear side of the stretching frame, the pressure unit comprises an adjustment frame, at least one middle clamp is arranged on the adjustment frame, and a plurality of middle oil cylinders are arranged between the adjustment frame and the middle clamp. The drill strength test under multiple load loads is realized by the application, drill strength data more in line with actual environment is obtained, and reference is provided for the use of the drill.

The application provides a method and system for measuring the contact strength of an adjustable diameter bolt. The test method involves installing a cone sleeve assembly into a test fixture, then fixing and installing it into a torsion testing machine. A rotating torque is applied by the torsion testing machine. The contact surface parameters, including the contact surface strength, are measured and calculated by combining the locking torque and the test complex structure parameters. By controlling a variable, the correlation between the contact surface strength and the variable is analyzed, thereby avoiding the influence of other factors and improving the accuracy of the test. The system involves a test sleeve, a locking nut, an adjusting ring, a guide rod and other simple tools and tooling. The contact surface parameters of the cone sleeve assembly are measured, and the correlation between the contact surface parameters and other factors is analyzed. Standard tools and equipment are used for installation and testing, and the method can be used for comparative testing of various specifications, diameters and different parameters.

This utility model discloses a refractory brick torsion detection device, relating to the field of refractory brick testing technology. It includes: a base plate, with multiple support rods arranged on its upper surface, and a first support plate at the top of the support rods; a hydraulic cylinder, disposed on the upper surface of the base plate, with its telescopic end connected to a second support plate, and multiple sliding rods arranged on the top of the second support plate, the sliding rods penetrating and slidably mounted on the first support plate, and a top plate at the top of the sliding rods. This utility model uses the hydraulic cylinder to adjust the vertical height of a dial indicator and a first servo motor to adjust the horizontal position of the dial indicator, thereby enabling the dial indicator to detect multiple refractory bricks on the upper surface of the first support plate. This eliminates the need for manual inspection of each brick individually, resulting in high efficiency, standardized testing, and minimal error.

The application provides a kind of steel gate accelerated degradation test bench of simultaneous action of corrosion and fatigue and the method for evaluating operating state after degradation, it includes corrosion test device, fatigue test device, data acquisition device and control system;The corrosion test device includes corrosion box, temperature control device, waste liquid collecting device, liquid supplementing device, electrochemical test device and air humidity control device, through liquid level sensor, thermometer and air humidity sensor, realize the accelerated corrosion test of control console to sample;The fatigue test device includes torsional stress loading device and tensile stress loading device, through constant mechanical load loading device, constant force loading and torsional load loading in horizontal direction are carried out to sample;The data acquisition device includes parallel light source, industrial camera, camera fixing frame, plane mirror, control console, remote ultrasonic thickness gauge and stress strain sensor, and the degradation information of sample surface is collected by industrial camera.

The present disclosure relates to a method of detecting that a tightening tool should be subjected to maintenance, and a device performing the method. The method enables computing a measure indicating total rotation angle that can be applied by a fully functioning tool before tool maintenance is required. The computed measure enables subsequent computation of a tool wear metric for an individual tool to determine that maintenance is required for said individual tool.

This application relates to the field of rivet testing fixture technology, specifically disclosing a testing fixture for measuring the torsional strength of rivets, including a nut clamp and a flat clamp. The nut clamp has a hexagonal hole that mates with a drive nut. The center of the nut clamp is hollowed out to observe the riveting process during the test. The hollowed-out part of the nut clamp is a through rectangular hole, the length of which is greater than the length of the threaded pull rivet sleeve. The hexagonal hole has a clearance fit with the drive nut. The flat clamp has a groove that mates with the flat end of the threaded pull rivet core. The groove is set along the diameter of the flat clamp and extends through both sides. The groove has a clearance fit with the flat end on the threaded pull rivet core. The nut clamp and the flat clamp are cylindrical in shape. The changes of the threaded pull rivet can be observed during the test, and the test results are reliable and intuitive. This testing fixture has a simple structure, low manufacturing cost, and simple operation.

The utility model discloses a kind of fixed clamps of torsion test, including base, connecting plate and clamping assembly, the base is set in connecting plate bottom, chute is set on base, the clamping assembly is set in connecting plate top, the connecting plate is connected with base by bolt, gasket is set on the bolt.The utility model is through the setting of first clamping piece, second clamping piece and third clamping piece, without other locking operation can be to automobile circuit fuse box fast clamping fixed, and then to fuse box torsion test is carried out.By the setting of base, the fixture can be quickly disassembled on test bench.The parts of the fixture can be disassembled and replaced, which is easy to maintain, and also has the advantages of simple structure, low production cost and the like.

This invention provides a test device and method for the overall torsional stiffness of tunnel segments and strata considering the grout solidification process. The test device includes a grout loading system, an overall torsional stiffness testing device for tunnel segments and strata, a torque loading system, and a grouting device. The overall torsional stiffness testing device is connected to both the torque loading system and the grouting device, and the grouting device is connected to the grout loading system. The test device includes a model box, tunnel segments, partitions, multiple displacement sensors, and a data acquisition instrument. The tunnel segments and partitions are installed inside the model box. The partitions are installed between the inner wall of the model box and the tunnel segments. The space between the outer surface of the partitions and the inner wall of the model box is a sand zone, and the space between the inner surface of the partitions and the outer surface of the tunnel segments is a grout zone. The beneficial effect of this invention is that the overall torsional stiffness testing device for tunnel segments simulates torsional deformation of the test segments through the torque loading system.

The utility model relates to tear duct support test technical field discloses a kind of multi-size tear duct support testing device, including bottom plate, the upper surface of the bottom plate is fixedly connected with test bench, the upper surface of the test bench is fixedly connected with limit box, the upper surface of the limit box is fixedly connected with motor, the output end of the motor is fixedly provided with screw rod, the outer wall of the screw rod is threadedly connected with sliding block, the outer wall of the sliding block is fixedly connected with limit frame, the inside of the limit frame is slidably connected with slide post, the outer wall of the slide post is fixedly connected with fixed plate, the upper surface of the bottom plate is provided with limit assembly. In the utility model, the effect that torque test is carried out to tear duct support is achieved by starting motor to drive screw rod rotation, by limit plate, sliding block, limit frame, slide post, fixed plate, bolt, test bench and limit box, so as to test the deformation resistance of support, more comprehensively test the performance of support.

The application discloses a DC charging cable torsion tensile property test method and system, relates to the torsion tensile property test technical field, and the specific implementation scheme is: first, the measured DC charging cable is clamped and fixed on the target device, and the test configuration of the target device is initialized, on the basis, the torsion tensile property test process is started, in the test process, the running state of the constant monitoring current is determined on line, once the abnormal state of the current is identified, the abnormal type is immediately located through feature analysis, if no abnormality is detected, the current working condition is maintained to continuously monitor the torsion tensile property test process, so that the test severity and monitoring continuity are ensured; after the predetermined test is completed, the torsion tensile property test result of the DC charging cable is collected and corrected, so that the problems of insufficient torsion tensile property evaluation accuracy and poor comparability of results between different devices are reduced.

This invention belongs to the field of automotive parts processing technology, specifically a torque measuring device for automotive driveshafts. It includes a worktable, a main unit mounted on one side of the top of the worktable, an output end fixed to the end of the main unit's rotating shaft, a movable stage slidably connected to the other side of the top of the worktable, a test end fixed to the end of the movable stage's output shaft, a mounting plate fixed to the middle of the top of the worktable, a telescopic cylinder mounted on the top of the mounting plate, a lifting frame fixed to the end of the telescopic cylinder's output shaft, a first protective shell fixed to one side of the bottom of the lifting frame, a second protective shell on the other side of the bottom of the lifting frame, and multiple sets of third protective shells arranged between the first and second protective shells. These first, second, and multiple third protective shells form a complete protective cover. When the driveshaft is being tested, the protective cover covers the outside of the driveshaft, preventing broken driveshaft fragments from flying outwards and causing damage to workers and equipment.

The application belongs to the technical field of corrosion test devices, and discloses a test device and method for simulating the operation of a ship stern shaft and application. The test device for simulating the operation of a ship stern shaft comprises a machine body for testing test pieces of different diameters through a three-jaw chuck clamp, and an experimental box body for enabling the bearing support of the machine body to move forward and backward through a slide rail and be fixed at any position to determine the test piece. The test piece is convenient to disassemble and assemble, can be disassembled and assembled through the opening in the upper part of the box body, and is independently sealed by a box cover, so that the service life is not shortened due to frequent disassembly and assembly of the workpiece. The connection mode of the bearings of the device is mostly coupling and key connection, which can effectively transmit torque. The size of the test piece is adjustable, and the clamp of the device adopts a three-jaw chuck clamp, so that the diameter of the test piece can be adjusted.

The invention discloses electrical safety performance detection equipment for rail transit and a detection method. The electrical safety performance detection equipment comprises a bracket, a vibration mechanism, a rotating mechanism, a clamping seat, a tension and compression test mechanism and a camera, the vibration mechanism is used for carrying out vibration simulation in the vertical direction, the horizontal transverse direction and the horizontal longitudinal direction; the rotating mechanism is used for rotating the connector clamped by the clamping seat; the tension and compression testing mechanism is used for performing tension and compression detection on the connector; the camera is used for shooting the connector; the operation table is in signal connection with a visual identification module and a tension and compression analysis module; the visual identification module is used for identifying and analyzing the condition of the connector; and the tension and compression analysis module is used for acquiring and analyzing the pressure conditions of the male head and the female head of the connector during connection and separation before detection and the pressure conditions of the male head and the female head during connection and separation after detection. According to the invention, electrical safety performance detection can be carried out on the rail transit connector in multiple modes, and good connection of the rail transit connector is ensured.

The application discloses a loading device for applying a torsional load, which is characterized in that a first limiting part is arranged on a base to fix a first driving wheel of an escalator step in a first direction and a second direction, so that the first driving wheel is in a fixed state and the position of the first driving wheel is ensured not to move. A second limiting part is arranged to limit two driven wheels in the second direction, so that the two driven wheels can only be dragged in the first direction and cannot jump in the second direction, thereby avoiding the whole escalator from jumping off the loading device and simulating the state of a real escalator running along a track during operation. A first loading part is arranged to apply a pulling force in the first direction to a second driving wheel, so that the second driving wheel is twisted along the pulling force, the step is deformed, a displacement sensor is arranged to measure the deformation in the vertical direction, and the strength of the step is evaluated.

The utility model discloses a kind of strength testing devices of sports rehabilitation equipment parts, including operation platform, clamping assembly, push rod assembly, driving device and detection element;Clamping assembly is installed on the tabletop of operation platform, for clamping the part to be tested;Pushing assembly includes a U-shaped frame with opening upward and two ejector rods, and two ejector rods are fixedly arranged on the two inner side surfaces of U-shaped frame symmetrically;Pushing assembly is driven by driving device to move linearly on operation platform;When pushing assembly moves unidirectionally, it is used to apply load to the part to be tested clamped on clamping assembly unidirectionally, and detection element is used to test the maximum stress intensity of part;When pushing assembly reciprocates, it is used to apply load to the part to be tested clamped on clamping assembly bidirectionally, and detection element is used to test the fatigue strength of part.The present application can be adapted to different sizes and shapes of part testing, and can test parts in a larger size range.

This invention relates to the field of textile material performance evaluation technology, specifically disclosing a method and system for evaluating the wrinkle resistance of a mulberry silk-integrated technical fabric. The method includes: acquiring initial state information of mulberry silk fabrics under multiple humidity environments; acquiring crease recovery information and torsion recovery information of each mulberry silk fabric under the same preset compression conditions based on the initial state information; acquiring fabric recovery information based on the crease recovery information and torsion recovery information; and flattening and stretching each crease-covered mulberry silk fabric under the same preset conditions. This invention simulates the complete mechanical process of fabric undergoing compression, torsion, and flattening and stretching under multiple controlled humidity environments, and simultaneously collects dynamic contours of crease recovery, torsion recovery trajectories, temporal data of stretching creep, and three-dimensional morphology and texture features of residual creases, thereby obtaining a multimodal dataset containing geometric, mechanical, and energy information.

This invention relates to the field of automotive wiring harness testing equipment technology, specifically a multi-functional testing device for the reliability of wiring harnesses in new energy vehicles. It includes a base plate, an active plate, a driven plate, and a drive structure. The drive structure includes a cylinder fixedly connected to the base plate. The cylinder's output end is fixedly connected to a connecting plate. A strip-shaped groove is formed on the upper surface of the base plate, and one end of the connecting plate passes through the groove and is fixed to the active plate. A rotating shaft is fixedly connected to the lower surface of the driven plate, and one end of the rotating shaft extends through the base plate to a position below it. This invention achieves three-dimensional composite stress simulation: through the linkage design of the rack, gear ring, and guide rail, while the cylinder drives the driven plate to swing horizontally, kinetic energy is cleverly converted into the rotational motion of the fixed tube, realizing synchronous testing of swing and torsion, and more realistically reproducing the stress state of the wiring harness under complex conditions such as door opening and closing.

The utility model discloses a wind power blade torsional fatigue test device, include: upper fixed plate, lower fixed plate and wind power blade, the upper fixed plate with lower fixed plate number all are provided with two groups, wherein, for the same side's one group upper fixed plate and lower fixed plate inside all are provided with movable slot, movable slot one end fixedly connects with limit stop, the inboard fixedly connected with damping telescopic link of limit stop, the damping telescopic link outside sleeve has the spring, the utility model has the following beneficial effect: rely on the unique adjustable structure, can according to the wind power blade of different size quick adjustment. Through movable slot, damping telescopic link, spring and L shape movable rod etc. The parts cooperation operation, no matter how the blade width changes, can adjust upper fixed plate and lower fixed plate to the appropriate spacing in short time, steady clamping blade, widen the blade range that can test, provide the test basis for the research and development of novel, efficient wind power blade of wind power enterprise, promote wind power technology iteration.

The utility model provides a kind of test device of radiofrequency ablation instrument, it is related to radiofrequency ablation instrument test device technical field, including push mechanism box and test box, push mechanism box is translation slidingly equipped with push plate, fixed shaft rotation is equipped with ablation pipe chuck on the push plate, the ablation pipe chuck is used to connect fixed radiofrequency ablation electrode tube, adjustable flexible sheath tube for guiding radiofrequency ablation electrode tube bending is installed in the test box, fixed shaft rotation movement in the reciprocating movement of ablation pipe chuck drives radiofrequency ablation electrode tube to carry out telescopic rotary motion in adjustable flexible sheath tube.The utility model installs radiofrequency ablation electrode tube on the ablation pipe chuck of fixed shaft rotation and reciprocating translation motion, to carry out the bending fatigue degree detection of radiofrequency ablation electrode tube by test mechanism instead of artificial, the consistency of experiment process can be guaranteed, and then quantitative analysis can be carried out to test structure, while greatly reduce the work intensity of test personnel.

The invention relates to the technical field of high-strength bolt detection equipment, and discloses intelligent integrated high-strength bolt detection equipment which comprises an equipment bin, a driving bin is mounted at the top of the equipment bin, and a driving head is mounted on the outer wall of the driving bin. According to the intelligent integrated high-strength bolt detection equipment, when the driving sleeve is used for carrying out a torsion test on a torsional shear type high-strength bolt, an electric torque wrench does not need to be additionally used for driving a nut, the nut can be driven under the action of the driving sleeve, and a wabbler of the bolt can be twisted off under the action of a twist-off barrel; when a torsion test is carried out on a conventional high-strength bolt, the driving sleeve does not need to be replaced, so that the driving sleeve can be used for carrying out the torsion test on the torsional shear type high-strength bolt and the conventional high-strength bolt of the same model, and after the wabbler of the bolt is twisted off, the driving sleeve can be replaced; and the bolt wabbler which is broken off in the inner cavity of the twist-off barrel can be pushed out under the action of the push rod.

The application belongs to the technical field of fatigue test, and provides a steel wire rope pull bending and torsion fatigue test method and equipment considering vibration and damage characteristics, which realizes simulation of vibration state on the basis of not increasing the vibrator by continuously changing the sliding platform in the preset range, determines the adjustment strategy of setting the running speed of the sliding platform according to the ratio of the diameter of the pulley to the diameter of the steel wire rope, realizes simulation of the external wear damage characteristics of the steel wire rope on the basis of reducing the frequency of replacing the pulley, can simulate the effect of the vibration affecting the extrusion contact state between the steel wire rope and the pulley in the mine hoisting process, reduces the error between the fatigue test result and the actual situation, and guarantees the promotion of the test equipment.