103 results about "Resistance test" patented technology

The invention relates to safety compliance evaluation, in particular to a safety compliance evaluation system and method based on a multi-modal large model, and a functional module cluster, which are used for managing each functional module in the system, supporting cross-modal consistency detection and comparing answer consistency under different modals. The self-developed security system is responsible for execution of an assessment task, including resistance test enhancement and built-in multi-granularity data variation strategy, improves assessment robustness by simulating a real attack scene, realizes end-to-end automation from data generation, tested model test to risk assessment, supports configurable parameters and reproducible results, and has the advantages of high reliability and high reliability. The self-iteration and version management of the evaluation model are realized, and the self-iteration mechanism is deeply combined with a compliance label system, so that the risk identification capability under legal, ethical and industrial specifications can be continuously optimized; according to the technical scheme provided by the invention, the limitation that evaluation can be carried out only under a single mode and a single rule in the prior art can be effectively overcome.

The invention discloses a testing machine for a new material compression resistance test, and relates to the technical field of compression resistance testing, the testing machine comprises a detection frame, a placing table is fixedly connected to the bottom end in the detection frame, a hydraulic telescopic rod is fixedly connected to the top of the placing table, and the testing machine further comprises a connecting plate arranged at the top end in the detection frame; the telescopic end of the hydraulic telescopic rod is fixedly connected with the connecting plate, a lower pressing plate is arranged at the bottom of the connecting plate, a plurality of connecting rods are fixedly connected between the lower pressing plate and the connecting plate, and the lower pressing plate and the connecting plate are rotationally connected with a lead screw; in order to adjust the size of the downward pressing surface of the new material during downward pressing detection, the sliding plate is pushed by the pushing piece to slide into different fixing frames and is connected and locked with a plurality of downward pressing rings according to needs, so that the size of the downward pressing surface is rapidly adjusted, and manual disassembly is avoided.

The compression resistance testing device for pillow production comprises a machine body, the top surface of the machine body is fixedly connected with a workbench, and the top surface of the workbench is fixedly connected with a portal frame; an inner plate body of the position adjusting mechanism can move in the horizontal direction, a carrying block can also move in the horizontal direction, in this way, a pressure applying testing assembly can move to different positions, different positions of a pillow can be conveniently detected, a power arc-shaped sliding block can move in a power arc-shaped sliding groove on an arc-shaped path, and the detection precision is improved. The position is adjusted by matching with the rotation of the through hole, so that the pressure applying angle of the pressure applying test assembly can be adjusted, the pressure applying condition of the cervical vertebra on the edge of the pillow can be simulated, the actual stress condition of the pillow can be simulated in the whole compression resistance detection, and the detection data is more accurate; when a rebound resilience test after compression, load unloading and return stroke of the output end of the pressure cylinder are carried out, the same square rod drives the pressure cylinder to move at the same time, so that the load can be rapidly unloaded.

The invention relates to the technical field of resistance test equipment, in particular to a portable loop resistance tester, which comprises a test and acquisition module used for acquiring current and voltage signal data of a tested product, analyzing a loop contact state and calculating a loop resistance value and impedance characteristic parameters; the control and output module is used for performing high-precision constant-current output and self-adaptive adjustment; the interaction and printing module is used for receiving a user operation instruction and displaying current and voltage signal data and a resistance value of a tested product, and meanwhile, printing is performed through a built-in thermal printer according to the user instruction; the power supply module is used for stably supplying power to equipment; and the intelligent diagnosis module is in butt joint with the cloud case library, automatically diagnoses related defect types influencing the loop resistance test, and generates a health assessment report. Therefore, the problems of small current output, insufficient sampling precision, single operation mode and the like in the prior art are solved.

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

The invention discloses a small-size hydrate sample forming and shear and compression resistance testing device and method.The device comprises a sample forming assembly, a humidity control unit and a testing assembly, and the sample forming assembly comprises a sample concave table, a hydrate synthesis kettle, a heat conduction block, a temperature control unit and a gas source; the hydrate synthesis kettle is flush with or higher than a groove opening of the concave sample table, the heat conduction block is arranged in the concave sample table and can move in the vertical direction relative to the concave sample table, the temperature control unit controls the environment temperature, and deionized water is injected into a throat of the hydrate synthesis kettle; the humidity control unit controls the environment humidity; the test assembly comprises a loading unit and a detection unit, the detection unit comprises a test probe, a mechanical sensor and a displacement sensor, the loading unit exerts pressure on the test probe in the horizontal direction and / or the vertical direction to act on the small-size hydrate sample, and the mechanical sensor and the displacement sensor detect pressurization load and displacement parameters; therefore, high-purity and small-size hydrate samples can be efficiently prepared and tested.

The application discloses a temperature sensing resistance test system and a test method. The test system comprises a workbench and a control unit. A plurality of sockets and two test cavities are arranged on the workbench. The sockets are consistent in number with the plugs and one-to-one corresponding. The sockets are used for inserting and connecting the corresponding plugs. The control unit is electrically connected with all the sockets. The test cavities are respectively provided with through holes. The cold temperature sensing head and the high-temperature temperature sensing head can be respectively inserted into the two test cavities through the through holes. The application provides suitable working conditions for the cold temperature sensing head and the high-temperature temperature sensing head through the test cavities, so that the cold temperature sensing head, the high-temperature temperature sensing head and the normal-temperature temperature sensing head of the temperature sensing assembly can realize resistance detection under respective corresponding working conditions.

The utility model relates to the technical research field of resistance detection and recording and appearance detection of thermoelectric refrigeration devices, in particular to a device for automatically detecting and recording the resistance of a thermoelectric refrigeration device. The device comprises a computer, a displacement control system, a coordinate platform, a visual microscope and a resistance test system, the computer, the displacement control system, the visual microscope and the resistance test system are placed on the surface of the coordinate platform, and the computer is connected with the displacement control system and the resistance test system. And a displacement controller and a mechanical control part of the displacement control system, a fixed arm of the coordinate platform, a microscope fixing bracket of the visual microscope and a resistance tester of the resistance test system are respectively fixed on a platform mounting surface of the coordinate platform through bolts. According to the utility model, accurate positioning, resistance detection recording and appearance detection can be carried out on the thermoelectric device with the size from millimeter to submicron, and the device has the characteristics of high precision, high automation degree, high stability, easy popularization and the like.

The invention relates to the technical field of semiconductors, and discloses a resistance test structure and a resistance test method of a semiconductor device, and the resistance test structure comprises a first test unit and a second test unit. The first test unit comprises a first test area marked by a first deep trench isolation structure, a first current input port, a first grounding port and a plurality of first voltage test ports, and the first test area covers a central area and two edge areas of the buried layer; the second test unit comprises a second test area marked by a second deep trench isolation structure, a second current input port, a second grounding port and a plurality of second voltage test ports, and the second test area covers an edge area of the buried layer; the width of the edge area covered by the second test area is equal to that of the edge area covered by the first test area. According to the invention, the two test units are used together, so that the influence of resistance of a non-uniform part at the edge of the buried layer can be eliminated, and the accuracy of test results is improved.

The utility model discloses a device for testing the wear resistance of a rolling bearing, and relates to the technical field of bearing testing. The rolling bearing comprises a base, a supporting column is fixedly installed on the bottom face of the inner wall of the base and penetrates through the top face of the base, an inner ring supporting plate is fixedly installed on the top face of the supporting column, and a rolling bearing body is placed on the top face of the inner ring supporting plate. Under the action of the distance adjusting assembly, the inner ring and the outer ring of the rolling bearing body are extruded and fixed by transverse force applied by the inner supporting block and the outer clamping plate respectively, meanwhile, the inner ring is longitudinally extruded and fixed by the outer ring pressing assembly and the inner ring supporting plate in a matched mode, and the outer ring is longitudinally extruded and fixed by the outer ring supporting plate and the outer ring pressing assembly in a matched mode. The inner ring and the outer ring of the rolling bearing body are further extruded and fixed, fixation is more reliable and firmer, and the situation that the outer ring slides relative to the outer clamping plate due to increase of ball friction force of the rolling bearing body after multiple times of rotation, and the accuracy of a test result is affected is avoided.

This invention relates to a target plate penetration resistance testing device with unidirectional translation and bidirectional rotation, comprising a test frame, a target plate suspension mechanism, and a target plate rotation limiting mechanism. The target plate is suspended to the test frame by the target plate suspension mechanism, which is configured to allow the target plate to be in unidirectional translation and bidirectional rotation by suspension. At the same time, the center height of the target plate can be adjusted by adjusting the length of the suspension cable in the target plate suspension mechanism. The target plate rotation limiting mechanism is used to adjust the test angle of the target plate to conduct penetration resistance tests at different angles.

The utility model relates to the field of pile foundations, in particular to a foundation pile frictional resistance testing device. The testing device comprises an upper fixed plate (1) and a lower fixed plate (2), the upper fixed plate (1) and the lower fixed plate (2) pass through a piston rod (6), and a lower movable plate (4) is arranged below a cylinder barrel (5); the middle parts of the upper fixing plate (1) and the lower fixing plate (2) are also connected through a central hole (12), the central hole (12) is cylindrical, and an inner sleeve (7) is arranged on the wall of the central hole (12); the space below the lower movable plate (4) and above the lower fixed plate (2) is a cavity (9); the test pile section is arranged between the upper movable plate (3) and the lower movable plate (4); the lower end of the displacement wire (11) is fixed on the upper movable plate (3) and penetrates through the upper fixed plate (1); and the high-pressure oil pipe (10) leads to the interior of the cylinder barrel (5) and can push the cylinder barrel (5) to move downwards.

This invention relates to the field of wire testing, and provides a 5G communication equipment anti-loosening fastener wire, its preparation method, and preparation system. The system includes a workbench and a testing disc, with the testing disc rotatably connected to the workbench. A clamping assembly is connected to the testing disc, and a frame is fixed to the workbench. A driving assembly and an abrasion resistance testing assembly are connected to the frame. The testing disc and the abrasion resistance testing assembly are respectively connected to the driving assembly, and a metal clamping component is placed on the workbench. This invention, by setting the testing disc, driving assembly, and abrasion resistance testing assembly on the workbench, periodically bends and continuously rubs the wire sample, thereby completing simultaneous bending and abrasion resistance testing under a single power source. Simultaneously, the clamping assembly on the testing disc and the metal clamping component enable rapid clamping of the wire sample, allowing the metal clamping component, acting as a weight, to be connected without knotting, significantly simplifying the process and improving testing efficiency.

The utility model discloses a clamping mechanism and a resistance testing device, the resistance testing device comprises the clamping mechanism and a resistance tester, and a resistance testing pin is connected with the resistance tester. The clamping mechanism comprises a clamping support, a resistance measuring needle and a clamping assembly, the resistance measuring needle is arranged on the clamping support, the resistance measuring needle can move in the preset first direction to adjust the position, and the resistance measuring needle can rotate along the central axis in the length direction of the resistance measuring needle to adjust the position; the clamping assembly is arranged on the clamping support and used for clamping a resistance value test object. The position of the resistance measuring needle can be adjusted so as to contact different positions of a resistance value test object and further test the resistance value from different parts. And the distance between the resistance testing needle and the clamping mechanism can be adjusted through movement of the resistance testing needle, so that the resistance testing device is adaptive to resistance testing objects with different sizes. The method can be widely applied to the technical field of resistance detection.

The invention relates to the technical field of fluid mechanics testing equipment, and discloses a flow resistance testing device which comprises a box body, a length adjusting assembly is arranged in the box body, a fixing block and a supporting seat are sequentially and fixedly connected to the interior of the box body from left to right, a fixing seat is fixedly connected to the side, close to the supporting seat, of the fixing block, and the fixing seat is fixedly connected to the side, close to the supporting seat, of the fixing block. Round rods are uniformly and fixedly connected between the fixed block and the supporting seat, the outer walls of the round rods are slidably connected with a moving seat, inner cavities are formed in the fixed block and the moving seat, a water tank is fixedly connected in the box body, and a first water pump is mounted in the water tank; the output end of the first water pump is fixedly connected with a water inlet pipe, and a butt joint hose is installed in the inner cavity. Through the cooperation of the bolt, the gasket, the first pressure pad, the second pressure pad, the spring and other structures, the butt joint is sealed quickly, the test preparation efficiency is improved, and a guarantee is provided for the flow velocity test efficiency.

The application discloses a kind of detection equipment applied to buoy inflator device measurement, including box, detection area is opened in the side of box, the detection area is equipped with feeding and discharging platform, the bottom of the feeding and discharging platform is fixedly connected with box by rotating mechanism, the feeding and discharging platform is equipped with the fixture for fixing the buoy inflator device of measured object, the left and right sides of the detection area are equipped with image acquisition mechanism and lever jacking mechanism respectively, the top of the detection area is equipped with resistance test probe assembly in cooperation with the resistance test point of the buoy inflator device, the rear of the detection area is equipped with ranging device in cooperation with the buoy inflator device, the rotating mechanism, image acquisition mechanism, lever jacking mechanism, resistance test probe assembly are all through a controller and PC end host computer cooperation.

The invention discloses a shield lining local segment and joint implosion resistance testing device and a testing method.The shield lining local segment and joint implosion resistance testing device comprises a portal frame, a test piece supporting body, a jack, a lining test piece and a concrete foundation, the portal frame and the test piece supporting body are both fixed to the concrete foundation, and a semicircular groove is formed in the concrete foundation; a lining test piece is fixed on the test piece supporting body, the inner arc surface of the lining test piece is opposite to the semicircular groove, and a plurality of jacks are fixed on the portal frame and apply loads in the horizontal and vertical directions to the test piece supporting body. According to the invention, experimental research and verification can be carried out on the internal resistance of the shield lining segment and the joint, and experimental research and verification can also be carried out on the mechanical properties of the segment and the joint under the action of static load.

The invention is suitable for the technical field of test monitoring, and provides a test control method and system based on polyolefin pipe anti-chlorine equipment, and the method comprises the steps: firstly obtaining real-time monitoring parameter set information and target experiment parameter set information of target anti-chlorine equipment, and then generating and executing parameter adjustment instruction information based on the real-time monitoring parameter set information and the target experiment parameter set information. According to the system, a systematic linkage control system of experimental parameters and online monitoring of multiple core parameters can be realized, so that testers can accurately master a specific test state, the residual chlorine amount, the PH value, the ORP value and the pipeline pressure value can be stabilized in a preset reasonable range, the test error of the anti-chlorine test aging degree is remarkably reduced, and the test efficiency is improved. The reliability and consistency of test results are greatly improved, experimental data can be collected at certain intervals according to set parameters, traceable files are formed, subsequent data analysis and quality tracking are facilitated, and solid technical support and data support are provided for evaluation of the chlorine resistance of the polyolefin pipe.

The utility model relates to the technical field of concrete anti-permeability test piece equipment, in particular to a concrete anti-permeability test piece mold entering and demolding all-in-one machine which comprises a machine body, a mold entering block and a mold demolding block, two sliding rails are installed on the top of the machine body, base plates are connected to the left sides of the sliding rails on the front side and the rear side in a sliding mode, and vertical plates are installed on the left side and the right side of the top of each base plate; the device has the beneficial effects that extra tools are not needed during mold entering by shifting the shifting rod I and starting the electric push rod I, the electric push rod I pushes the mold entering block to compact concrete to the inner wall of a test mold, and during mold stripping, the mold stripping block is pushed to move downwards by shifting the shifting rod II and starting the electric push rod II, so that a concrete test piece in the test mold is gradually extruded; by means of the integrated arrangement, an operator can complete the mold entering and demolding processes of the concrete test piece without an additional auxiliary tool, and therefore the operation convenience and the testing efficiency are improved.

Disclosed in the present invention is an uplift resistance test method for a rock-socketed pile, comprising a test model preparation process and a test process. The test model preparation process comprises: step 1, manufacturing a test model preparation apparatus comprising a rock mass preparation mold and a hoisting frame; step 2, hoisting the rock mass preparation mold to a pouring site by means of the hoisting frame, removing the hoisting frame, mounting a rock-socketed hole mold, and pouring a rock mass model; step 3, removing the rock-socketed hole mold, forming a rock-socketed hole, mounting a pile body mold, placing a reinforcement cage in the rock-socketed hole and the pile body mold, pouring a pile body model, and forming a test model; and step 4, first removing the pile body mold and side formworks of the rock mass preparation mold, and then remounting two groups of side formwork support steels and the hoisting frame. The test process sequentially comprises: assembling a test apparatus on a test model, carrying out a test, removing the test apparatus, and transporting the test model to a storage site for subsequent crushing. The present invention can satisfy the preparation, transportation and test requirements of a test model.

The utility model provides a dynamic resistance tester chuck, and belongs to the field of resistance testing. The chuck comprises an upper pressing plate, a lower pressing plate, a rotating bolt, a top plate and a bottom plate, wherein the top plate and the bottom plate are arranged in parallel. The side portions of the top plate and the bottom plate are connected through a supporting beam. The rotating bolt penetrates through the top plate and is rotationally connected with the upper pressing plate; the bottom plate is connected with the base through a connecting beam, and the upper pressing plate and the lower pressing plate are provided with a first clamping plate and a second clamping plate respectively, the first clamping plate and the second clamping plate are clamped on the upper pressing plate and the lower pressing plate respectively, and the fastening bolt transversely penetrates through the horizontal base surfaces of the first clamping plate and the second clamping plate to fasten the first clamping plate and the second clamping plate; the first clamping plate and the second clamping plate are made of insulating materials; a first conducting strip is arranged on the surface of a first clamping plate on the lower pressing plate, and the first conducting strip is provided with a lug for clamping a meter pen of a universal meter; a second conducting strip is arranged on the surface of the first clamping plate on the upper pressing plate. According to the utility model, the convenience and accuracy of resistance testing can be improved.

The utility model provides a diaphragm water pressure resistance test device. The diaphragm water pressure resistance test device comprises a base, a pressure cavity, an upper pressing plate and a sealing system, the pressure cavity is fixed to the base through base connecting bolts, and the upper pressing plate is installed on the top of the pressure cavity through fastening bolts. The sample clamping surface of the pressure cavity is provided with a convex V-shaped groove, the sample clamping surface of the upper pressing plate is provided with a concave V-shaped groove, and the convex V-shaped groove and the concave V-shaped groove form a concave-convex combined clamping structure with a gap of 0.3-0.6 mm; a through test hole is formed in the center of the upper end of the pressure cavity, and a through hole correspondingly communicated with the test hole is formed in the upper pressing plate; and a liquid inlet and a liquid outlet are formed in the pressure cavity. According to the device disclosed by the utility model, the direct measurement of the compression strength data of the nuclear-grade diaphragm is realized by accurately matching the clamping gap, optimizing the fluid channel and strengthening the sealing, the test deviation rate is less than or equal to 5 percent, and the safety detection requirement under the high-pressure working condition of 30-50MPa is met.

The utility model discloses a pressing and fixing type friction resistance testing component for a film coating sample, which comprises a supporting seat, the supporting seat is movably connected with a height adjusting device, a supporting rod is arranged at the upper end of the supporting seat, a working rod is arranged at the lower end of the supporting rod, a friction head is arranged at the lower end part of the working rod, and the friction head is pressed on the film coating sample during working. The coating sample reciprocates left and right, and the friction head is used for carrying out friction resistance test on the coating sample; an outer thread is further arranged on the outer diameter of a rod body of the working rod, a corresponding threaded sleeve is sleeved on the outer thread, a lifting sleeve is further sleeved on the working rod, and the lifting sleeve is correspondingly driven to move up and down on the working rod by screwing the threaded sleeve. According to the device, the lifting sleeve is arranged on the working rod, the spring rod is arranged between the lifting sleeve and the supporting seat, and the working rod is pressed and fixed through the spring rod, so that the position of the working rod is fixed, position deviation is avoided during testing, and the testing precision and accuracy are effectively improved.

The utility model relates to the technical field of rubber alcohol friction resistance testing machines for glue tests, and particularly discloses a clamping mechanism which comprises a testing machine workbench and a plurality of threaded holes, the threaded holes are formed in the upper surface of the testing machine workbench, a plurality of clamping devices are arranged on the testing machine workbench, and the clamping devices are arranged on the upper surface of the testing machine workbench. Each clamping device comprises a first pressing plate, a first threaded bolt and a lifting support, the first pressing plate is arranged on the upper surface of the testing machine workbench, the lifting support is fixedly installed on the upper surface of one end of the first pressing plate, a first sliding groove is formed in the first pressing plate, the first threaded bolt penetrates through the first sliding groove and is in sliding connection with the first sliding groove, and the first threaded bolt penetrates through the first sliding groove. A second sliding groove is formed in the lifting support, a lifting pressing plate is slidably connected into the second sliding groove, and the clamping device has the beneficial effects that the lifting support and the lifting pressing plate are additionally arranged on the first pressing plate, so that the clamping device can effectively fix various thicker objects.

The present invention relates to the technical field of testing devices, and discloses a plastic corrosion resistance testing device, comprising a test box, wherein the inner wall of the test box is slidably connected to a test platform, a plurality of test chambers are fixedly connected to the surface of the test platform, a discharge assembly is installed above the test chamber, the discharge assembly is used to add corrosive liquid into the test chamber, a supporting orifice plate is provided inside the test chamber, the upper end of the spring telescopic pull rod is fixedly connected to the inner wall of the test chamber, a first electric push rod is fixedly connected to the inner wall of the test chamber, a test adjustment assembly is provided on the surface of the supporting orifice plate. By controlling the drain port to open or close through a sealing plug, when the drain port is open, a drip test can be performed on the plastic, and when the drain port is closed, the corrosive liquid stays in the test chamber to perform an immersion test on the plastic, thereby providing two testing methods and improving the flexibility and comprehensiveness of the plastic corrosion resistance test.

The utility model discloses resistance testing equipment, which relates to the technical field of testing equipment and comprises an equipment rack, and a resistance conveying mechanism and a resistance detecting mechanism are fixedly mounted on the inner side of the equipment rack respectively. The resistor detection mechanism is arranged on the rear side of the resistor conveying mechanism; according to the resistor feeding device, in the resistor conveying mechanism, the lifting linear module drives the push rod to achieve stable resistor feeding, and position deviation caused by manual feeding is avoided; the fixture linear module is matched with a driving cylinder, and a positioning adjusting wheel I and a positioning adjusting wheel II controlled by a cylinder rod, so that the positioning parameters of the carrier base can be flexibly adjusted according to resistors with different packaging specifications; after manual carrying is replaced by automatic conveying, the conveying time of a single resistor is greatly shortened, the conveying efficiency and compatibility are improved, and the large-scale production requirement is met.

The invention relates to the technical field of new energy vehicles, and discloses new energy vehicle BDU resistance test equipment, which comprises a working box, a detection tray, a detection frame and a speed chain conveying bearing platform, a vertical position adjusting assembly is installed at the top of the detection frame, a tray jacking assembly is installed on the speed chain conveying bearing platform, the detection frame is located in the working box, and the detection tray is located in the working box. The bottom of the vertical position adjusting assembly penetrates through the top plate of the detection frame and is provided with a connecting plate. According to the resistance test equipment and method for the new energy vehicle BDU, a vertical position adjusting assembly, a first detection module and a second detection module are arranged, a telescopic electric cylinder of the vertical position adjusting assembly is controlled to drive the first detection module to descend, and a plurality of first probes on the first detection module make contact with BDU test points; and the lower tool jacking cylinder jacks the mounting plate to rise to drive a plurality of second probes on the second detection module to be in contact with the BDU test points, so that the resistor can be rapidly detected, and the operation is convenient.

This invention belongs to the technical field of testing equipment and provides a tensile testing device for polyethylene pressure pipe and fitting connections. The device includes a testing equipment box, a constant temperature testing chamber fixedly mounted on the testing equipment box, and a tensile testing assembly. The tensile testing assembly includes a motor unit housed within the testing equipment box, a ball screw rotatably mounted within the constant temperature testing chamber and connected to the motor unit, a top lifting frame movably sleeved around the ball screw, and a bottom clamping frame fixedly mounted on the bottom wall of the constant temperature testing chamber. The top lifting frame is equipped with a top clamping unit for holding the sample pipe end, and the bottom clamping frame is equipped with a bottom clamping unit for holding the sample pipe end. The tensile testing device for polyethylene pressure pipe and fitting connections provided by this invention has a high degree of automation, improves the efficiency of the tensile testing, avoids testing errors caused by improper manual operation, and improves the accuracy of the test results.

The utility model belongs to the technical field of medical instruments, and particularly discloses a catheter clamping structure which comprises a first clamp and a second clamp. The pipe inserting clamp is mounted on the first clamp; the adjusting piece is arranged on the intubation clamp and used for adjusting the radial size of the intubation clamp and clamping or loosening the catheter. When the catheter is clamped, the clamping stability of the catheter is improved, and the risk that the catheter falls off from the clamping structure is reduced. Meanwhile, the utility model further discloses a guide pipe torsion resistance testing device, two ends of the guide pipe torsion resistance testing device are provided with the lining cores, concentricity of two ends of the guide pipe can be kept, the guide pipe is supported, measurement accuracy is improved, and the risk that the guide pipe falls off is reduced.

The utility model discloses a sole fold resistance testing machine, relates to test equipment technical field, including base, fixed frame and placing plate, the both ends of base top surface both sides are equipped with fixed frame, a plurality of fixed frame internal sliding is equipped with support block, the top of a plurality of support block is all fixedly equipped with fixed plate, and the fixed plate is equipped with the fixed plate. A rotating shaft is rotatably arranged between the opposite ends of the two fixing plates on one side, fixing rings are fixedly installed on the surfaces of the two rotating shafts, placing plates are fixedly installed on the surfaces of the two fixing rings, a supporting plate is fixedly installed at one end of the base, and a top plate is fixedly installed on the surface of one end of the supporting plate. According to the shoe sole detection device, shoe soles with different sizes and different thicknesses can be conveniently clamped, meanwhile, the shoe soles can be stably fixed, the shoe soles are prevented from sliding off during detection, the two faces of each shoe sole can be detected at the same time, the detection efficiency is improved, and the practicability of the device is improved.