177results about "Material strength using steady bending forces" patented technology

An experimental self-anchored stress electrochemical corrosion device and experimental method, comprising a support mechanism, a test piece assembly arranged on the support mechanism, and an electrolysis mechanism arranged on the upper end of the test piece assembly; the support mechanism comprises two bases, and the upper ends of the two bases are respectively provided with support columns for supporting the test piece assembly; the test piece assembly comprises a first test piece arranged above the base and a second test piece arranged above the first test piece. The electrolytic cell is arranged on the upper end of the test piece, and a support is arranged between the test pieces, so that the test piece can be subjected to four-point bending loading, the upper surface of the pure bending section of the test piece reaches a predetermined tensile stress, the preloading is maintained for corrosion characteristic testing, different tensile stresses can be changed to realize the testing of the corrosion characteristics of the test piece under different tensile stresses, the flexibility is high, the testing effect is good, and the device is convenient to use.

This invention discloses a testing device and method for liquid crystal display modules, relating to the field of liquid crystal display module testing technology. The device includes a base, a flipping bracket, a housing, and a testing platform. The testing platform is equipped with a bidirectional clamping device driven by a first motor for automatically clamping the liquid crystal display module for bending resistance testing, and an auxiliary bending mechanism to ensure uniform force distribution. The housing also houses a click-resistance testing mechanism, including an electric hammer, a pressure sensor, and a displacement sensor, for testing the screen's resistance to click pressure. After testing, debris is automatically removed by a multi-stage cleaning mechanism including a scraper and a spray nozzle. When the testing platform flips, the spray nozzle moves closer to the testing platform to improve the cleaning effect. This invention features a high degree of automation, integrating bending resistance testing and click testing, providing accurate testing and thorough cleaning, effectively improving the efficiency and safety of liquid crystal display module mechanical performance testing.

The application discloses a kind of electric loading testing device for glass cold bending, including lower support on base, nut type elevator driven support mechanism, and pressure system of upper support.Support mechanism carries glass by T type carrier plate, and the edge of glass is adaptively locked by the edge pressing structure driven by worm and worm self-locking mechanism, and rubber strip at the bottom of pressing plate provides buffer protection;Pressure system rotates rough pressure direction by first motor driven rotating drum base, and second motor realizes lateral micro-positioning of pressing assembly by the cooperation of screw and gear rack, and adaptively fits glass curved surface by the cooperation of double pressure column and transverse block linkage.The device integrates electric drive components and pressure sensing components, and automatically controls glass positioning, pressure point adjustment and pressure testing throughout the process, solving the problems of low positioning accuracy, poor curved surface adaptability and insufficient test efficiency of traditional equipment.

The present application belongs to the technical field of concrete, and discloses a method for evaluating the degradation grade of concrete aggregate caused by sulphate attack. The method comprises the following steps: first, preparing fine aggregate samples from the sulphur-containing aggregate to be evaluated; then, mixing the samples with cement and water to prepare mortar expansion rate test pieces and mortar flexural strength test pieces; next, testing the 84d expansion rate of the mortar expansion rate test pieces and the 84d flexural strength retention rate of the mortar flexural strength test pieces; finally, evaluating the grade according to the test results: if the 84d expansion rate is greater than 0.2%, the sulphate attack is determined to be strong; if the 84d expansion rate is less than or equal to 0.2% and the flexural strength retention rate is less than 80%, the sulphate attack is determined to be moderate; if the 84d expansion rate is less than or equal to 0.2% and the flexural strength retention rate is greater than or equal to 80%, the sulphate attack is determined to be weak. The present application solves the problem of the lack of a unified test method standard for sulphate attack on concrete aggregate, provides a complete test method, establishes an evaluation system for the damage grade of sulphate attack, and promotes the use of aggregate with excessive sulphur content.

This invention relates to the field of glass production testing technology, specifically disclosing a glass cold bending ultimate failure test device and method. The device includes a worktable and four identical cold bending loading units. Each unit integrates a planar displacement structure with horizontal displacement capability, a liftable and directional adjustable support structure, and a pressure head connected by a ball joint. During testing, the planar displacement structure of each unit is first adjusted to accommodate glass specimens of different sizes. Then, the support structures of three units form an L-shaped support surface, and their pressure heads press against corresponding corner points on the upper part of the specimen to establish stable constraints. Finally, the pressure head of the fourth unit applies a concentrated load to the unconstrained corner points, while automatically monitoring the load and displacement until the specimen fails. This invention, through modular and automated design, achieves high versatility of the device, high testing accuracy, and high operational safety, effectively improving testing efficiency and data reliability.

The utility model belongs to the oil cylinder tube detection technical field, concretely relates to an oil cylinder tube anti-bending detection equipment, this oil cylinder tube anti-bending detection equipment, including base, the upper surface fixed connection of base has support frame, the front surface fixed connection of support frame has box body, the front surface fixed connection of box body has touch -control display screen. This oil cylinder tube anti-bending detection equipment cooperates through second U -shaped board, support station, rectangle tube, first hollow block, spring, connecting block, steel wire, round hole, first cylinder, second cylinder and torus, so that the detection personnel can make the two rectangle tubes on support station move to support station center synchronously through the downward torus, and the center of oil cylinder tube can be accurately pushed to the just below of pressing head through the rectangle tube of moving, so that the overhaul personnel can quickly and accurately align the center of oil cylinder tube with pressing head, and further make the oil cylinder tube anti-bending detection equipment more convenient to use in overhaul.

The application provides a stability test method and system of flexible optoelectronic display material, relates to the technical field of stability evaluation, and the method comprises the following steps: collecting a working condition application data sequence and a measured performance degradation time curve in real time; inputting a degradation confidence prediction network for prediction; obtaining a comprehensive confidence score; when the spatial confidence does not meet the preset requirement, extracting the working condition application data sequence corresponding to the minimum value of the comprehensive confidence score as a target point, generating a plurality of candidate continuous working condition change paths; and optimizing the test process by automatically adjusting the test path and conditions until the preset confidence requirement is met to obtain a stability test evaluation result. The application solves the technical problem that in the prior art, due to the fixed test working condition and the disconnection with the real scene, there is a large amount of information blind test and resource waste in the test process, thereby affecting the stability test efficiency, so that the most comprehensive degradation data is obtained in the least test period, and the stability test efficiency is improved.

The utility model relates to cement detection technical field especially relates to a cement detection electric bending testing machine, including operation platform, the operation platform top fixedly connected with mounting seat, the operation platform top mounting seat both sides position fixedly connected with mounting bracket, the mounting bracket top is equipped with hydraulic pressure rod, the hydraulic pressure rod bottom fixedly connected with the pressing block, the mounting seat top installation place in the pressing block bottom position is developed and provided with the upper clamp, the upper clamp bottom is developed and provided with the loading roller, the loading roller with upper clamp junction is developed and provided with mounting assembly, the lower clamp is provided with below the upper clamp, be provided with lifting assembly between the lower clamp and mounting bracket. The utility model not only can make loading roller can carry out quick installation and disassembly to improve the replacement efficiency when loading roller appears damage, and can make test piece can be adjusted to be closely combined with loading roller after being placed well to make test data more accurate.

This invention discloses a method and apparatus for testing the bending fatigue of a steel wire rope in a smart vehicle drum. The apparatus includes a container plate, a steel wire rope clamping assembly mounted on the container plate, and a camera assembly mounted on the opposite side of the container plate. The steel wire rope clamping assembly holds the center point of the steel wire rope to keep it constant. The back plate of the container plate has steel wire rope bending drive assemblies above and below the steel wire rope clamping assembly. These drive assemblies fix the upper and lower ends of the steel wire rope and drive them to swing around the center point. The camera assembly captures an image of the center point of the steel wire rope while the upper and lower ends swing around the center point. The camera assembly is connected to a processing system that tests the bending fatigue of the steel wire rope based on the image changes of its center point. This invention can quickly and accurately identify image changes in the center point of the steel wire rope.

The utility model discloses a novel pole piece flexibility detection mechanism can simplify operation, improve detection precision, and it includes work table, pressure sensor, displacement sensor, fixed base, sliding seat, drive arrangement, first clamping seat, second clamping seat and guide assembly, pressure sensor, displacement sensor all are installed on work table, fixed base is installed on pressure sensor stress end, sliding seat is slid on work table and is driven to realize relative movement with fixed base by drive arrangement, and displacement sensor detects the moving distance of sliding seat, first clamping seat holds pole piece one end, and one end is hinged on fixed base, and the other end side is equipped with first guide shaft, second clamping seat holds pole piece other end, and one end is hinged on sliding seat, and the other end side is equipped with second guide shaft, and guide assembly has two path grooves for first, second guide shaft sliding cooperation respectively, under the common effect of drive arrangement and path groove, first, second clamping seat synchronous overturns and switches between both coplanar and parallel state.

Provided is a cable bending fatigue test system, comprising: a hollow main body portion through which at least one cable passes; a pair of main gears respectively located at both ends of the main body portion, the pair of main gears being connected by a transmission shaft and being rotatable by a first motor only driving the transmission shaft; and at least one pair of secondary gears, each of the at least one pair of secondary gears being engaged with a pair of main gears and being rotatable by the engaged main gears, wherein both ends of the cable are fixed to the gear center of a pair of secondary gears among the at least one pair of secondary gears, and wherein the main body portion is such that the cable is in a bent state when both ends of the cable are fixed to the gear center of a pair of secondary gears.

The utility model relates to the technical field of mechanical property test, and disclose a kind of pull rod mechanical property testing device, test table, the clamping mechanism is fixed in the top side both ends of test table;The clamping mechanism includes the lower clamping plate of symmetry installation in the top side both ends of test table, the lower clamping plate top side one end is fixed with fixed plate symmetrically, the fixed plate top side is fixed with the limit rod, the limit rod is slidably installed with upper clamping plate, the lower clamping plate and upper clamping plate side are fixed with connecting seat, the connecting seat is respectively rotatably installed with connecting rod, the connecting rod one end rotatably installed with rotating seat, the rotating seat inboard rotatably inserts with screw rod, the screw rod both ends are fixed with disc, the disc top side edge position is fixed with handle.The utility model is through the structure of clamping mechanism, by screw rod cooperation drives both sides clamping plate to merge, to realize the function of clamping fixed material to be tested, this structure can be used for pull rod and other tubular materials, also can be used for other shape materials, more widely applicable.

The application belongs to the technical field of graphite electrode strength detection, and provides a kind of graphite product's anti-bending strength detection device, including base, mobile assembly is installed on the base, the top of mobile assembly both sides are equipped with end fixing mechanism, two end fixing mechanisms are symmetrically distributed, the end fixing mechanism includes electrode connector, the electrode connector can be screwed with the thread groove of graphite electrode end portion.The application, through two end fixing mechanisms, fixes the two ends of graphite electrode, when extrusion mechanism extrudes the middle part of graphite electrode, the two ends of graphite electrode are stressed, when the anti-bending strength of the two ends of graphite electrode is insufficient, it will break, at this time, record the maximum pressure generated by extrusion mechanism to graphite electrode, the pressure is the compressive strength of the thread groove of graphite electrode end portion, the application can detect the anti-bending strength of the thread groove of graphite electrode end portion, so that the detection data of graphite electrode is more accurate.

This utility model relates to the field of polycrystalline steel blade strength testing technology, and discloses a device for testing the strength of quenched steel polycrystalline steel blades, including a base, a compressive strength testing base, a bending strength testing instrument, a rotating seat, a gripping component, a placement frame, a polycrystalline steel blade, and a compressive strength testing component. This device, by including the base, compressive strength testing base, compressive strength testing component, and bending strength testing instrument, can perform compressive strength and bending strength tests on polycrystalline steel blades respectively. The base, compressive strength testing base, and bending strength testing instrument are connected by locking blocks and slots. Users can replace the testing units as needed, for example, replacing the bending strength testing instrument with a hardness testing instrument, further demonstrating the device's high adjustability and applicability. The gripping component allows the polycrystalline steel blade to be tested to be placed at the testing point, eliminating the need for manual placement by the user and improving the device's convenience.

This application relates to the field of flexible plate testing technology, and in particular to a flexible plate testing device, including a fixed plate, a sliding plate, a follower plate, and a driving mechanism. The top surface of the fixed plate is suitable for connection to one end of the flexible plate. The top surface of the follower plate, at the end away from the sliding plate, is suitable for connection to the other end of the flexible plate. The driving mechanism is connected to the sliding plate and is used to drive the sliding plate to perform linear reciprocating motion, thereby driving the follower plate to perform linear reciprocating motion. During this process, the position of the crease in the middle of the flexible plate continuously changes. The fixed plate, sliding plate, and follower plate cooperate with each other to realistically simulate the bending and stretching states of the flexible plate in actual use. The gap between the top surface of the fixed plate and the bottom surface of the follower plate can be adjusted according to the thickness and bending radius of the flexible plate being measured to meet the testing requirements of various working conditions, greatly improving versatility.

The application discloses a kind of (C 20 H 20 P)2MnBr4 In material stress visualization and fracture prediction application, belongs to stress visualization and fracture prediction technical field.It includes the following steps: (1) preparation sensing workpiece: liquid (C 20 H 20 P)2MnBr4 Plastic into the three-dimensional entity consistent with target workpiece geometry;(2) load and collect light signal: under the condition of preset load, load is applied to the sensing workpiece, and the dynamic light image sequence generated under the action of load is synchronously collected;(3) analysis light signal and mapping mechanics behavior.The application realizes the direct physical visualization of stress and fracture process: the application is converted into intuitive, global, real-time optical image by (C 20 H 20 P)2MnBr4 Emission characteristics, abstract simulation calculation cloud picture and discrete measurement data.Stress concentration, crack initiation and expansion and other key mechanical behavior "at a glance", greatly reduce the analysis threshold and interpretation difficulty.

A method for predicting delayed fracture in a press formed part according to the present invention includes: calculating a stress distribution and a strain distribution in a press formed part (S1); calculating a stress gradient in a direction of crack propagation due to delayed fracture at a delayed fracture portion-of-concern in the press formed part (S3); setting a hydrogen concentration distribution corresponding to the strain distribution in the press formed part (S5); performing hydrogen diffusion analysis on the press formed part based on the stress distribution and the hydrogen concentration distribution to calculate a hydrogen concentration distribution after hydrogen diffusion (S7); and predicting whether delayed fracture will occur at the delayed fracture portion-of-concern based on delayed fracture determination conditions based on stress, strain, and hydrogen concentration at the stress gradient, and stress, strain, and hydrogen concentration at the delayed fracture portion-of-concern (S9).

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 present application relates to cable performance detection technical field, especially a kind of wind power aluminum alloy cable bending test method, the precision of calibration height adjustable optical ranging probe is used before test, the height of height adjustable optical ranging probe is adjusted;The 1m midpoint of sample is aligned with the top of supporting cylinder and is gently placed, and the counterweight is hung by synchronous weight device and is placed for ≥30s to stable;The outer arc length of 1m midpoint after 30s, 30min, 1h, 2h of automatic acquisition of intelligent data acquisition terminal after loading;After test, the sheath microcrack is detected by nondestructive testing instrument.The environmental control of the present application is more accurate: through the double parameter limitation of temperature and humidity, the interference of environmental factors on the deformation of cable material is eliminated, and the test consistency and repeatability are significantly improved;New stress-free pretreatment step is added, and the residual stress of cable winding is eliminated, and the test result accurately reflects the inherent flexibility of cable, and the sample state is more real.

The utility model belongs to mechanical analysis equipment technical field provides a kind of engineering component internal force analysis appearance, the engineering component internal force analysis appearance includes mandrel and multiple component module;Multiple component module is successively sleeved on mandrel and mutually abuts and forms engineering component model, and component module is slidably engaged with mandrel;At least the outer peripheral surface or axial end surface of two adjacent component modules is respectively provided with angle scale stripe and pointer stripe;The outer peripheral surface of each component module is provided with grid stripe.The engineering component internal force analysis appearance provided by the utility model, the position of angle scale stripe is pointed to by pointer stripe, and torsion angle is directly and intuitively shown, and then torsion strain is directly and intuitively shown;When simulating the bending condition of engineering component, component module will turn over outward, and the outer side portion is mutually far away, and then bending strain is directly and intuitively shown.

The application relates to an aluminum alloy profile manufacturing strength test device, which comprises a workbench, n-shaped seats symmetrically arranged on the top of the workbench, two n-shaped seats used for supporting two ends of a profile body, an inverted L-shaped mounting frame arranged on the rear side of the top of the workbench, a pressing assembly installed on the inverted L-shaped mounting frame and used for pressing on the profile body to test the compression strength and the bending strength, a liftable clamping assembly arranged on the top of the n-shaped seat and used for limiting or releasing the profile body, vertical L-shaped frames symmetrically arranged between the n-shaped seats, horizontal L-shaped frames fixedly arranged between the vertical L-shaped frames and a lifting frame slidingly arranged between the two vertical L-shaped frames. Through linkage design of the clamping assembly, the extruding block and the sliding frame, synchronous control of the plug-in or separation of the sliding frame and the horizontal L-shaped frame is realized by using the electric screw rod to drive the lifting action of the clamping block, and quick and automatic switching between the compression strength test and the bending strength test is realized.

This invention provides a bending fatigue testing fixture, belonging to the field of testing fixture technology. It includes a supporting beam, a sample holder, a locking plate, a fixing member, and an upper pressure head. Two sample holders are provided and mounted on the supporting beam. The locking plate is slidably mounted on the sample holder, and the fixing member is mounted on the sample holder. The fixing member is used to lock the plate, pressing the sample against the sample holder and fixing the locking plate to the sample holder. The upper pressure head slides towards the supporting beam to press down on the sample. The sample holder includes a reference holder and a reference sliding holder. The reference holder is slidably mounted on the supporting beam, and the reference sliding holder is located within and slidably mounted on the reference holder. The locking plate is mounted on the reference sliding holder. This invention has the advantage of improving the accuracy of test results.

The application provides a novel high-strength ceramic material testing device and method, relates to the technical field of ceramic material testing, and comprises a control assembly, the control assembly is composed of a moving mechanism, a monitoring mechanism, a linkage mechanism and a clamping seat mechanism, the control assembly has a self-adaptive driving control mode, can realize quick positioning of the use position of the control assembly, thereby improving ceramic material mounting and dismounting and testing efficiency, the driving control mode of the control assembly and the use state of the clamping seat mechanism are interlinked, can adapt to quick mounting and dismounting testing use of ceramic materials with different lengths, and solves the problem that the force applying mechanism of the existing strength testing device adopts a one-way driving control mode, the movement of the moving end can only be driven to move through an electric control or hydraulic system, the movement adjusting speed is slow, and the positioning position cannot be directly intervened and adjusted by manual operation throughout the whole process.

This utility model discloses a bending moment locking device and a pure bending fatigue tester for a pure bending fatigue specimen, relating to the field of mechanical testing technology. It includes: multiple limiting rods, a first positioning baffle, a second positioning baffle, and multiple first limiting blocks, with each limiting rod arranged in parallel. The first positioning baffle is connected to one end of a limiting rod and can be positioned along the length of the limiting rod. The second positioning baffle is arranged parallel to the first positioning baffle and is slidably connected to the limiting rod, maintaining its slidable position. The first limiting block is fixedly connected to the end of the limiting member away from the first positioning baffle and is located on the side of the second limiting baffle away from the first limiting baffle. The distance between the two opposite sides of the first and second positioning baffles when the second positioning baffle and the first limiting block are pressed together is the standard lever arm length. The structure is simple, easy to use, and effectively ensures the accuracy of the test data.

The utility model relates to engineering detection technical field, concretely is a kind of reinforcing bar bending test equipment, including stand, roof and base, stand, roof and base fixed connection, the below of roof is equipped with hydraulic rod, the lower end of hydraulic rod is connected with pressure head, and two support seats are equipped on base, and rotating piece is connected on support seat, and rotating piece is equipped with slot, and slot swing joint has insert, and insert is equipped with jack, and the jack of two inserts is connected with test reinforcing bar, and test reinforcing bar is below pressure head. When the bending resistance of reinforcing bar needs to be tested by staff, the reinforcing bar is fixed by being inserted through the jack on two rotating pieces, the reinforcing bar is extruded downward by pressure head, and the both ends of reinforcing bar are fixed by jack, so that the safety of reinforcing bar bending test is ensured.