1742 results about "Strength testing" patented technology

The invention provides a solid waste filling material ratio optimization method of a magnesium slag-steel slag composite cementing material, and relates to the technical field of solid waste filling. The method comprises the following steps: mixing magnesium slag, steel slag, desulfurized gypsum and mineral slag to prepare a cementing material, and carrying out pretreatment and physicochemical property analysis on raw materials by taking tailings and waste rocks as filling aggregates; then designing a cementing material proportioning scheme and carrying out strength test to obtain an optimal ratio of the cementing material; then considering different slurry concentrations and plastic-to-bone ratios, and carrying out an all-solid waste filling slurry rheological test and an all-solid waste cementitious body strength test; and finally, according to the two test results, establishing a multi-objective optimization model taking the on-way resistance and the filling material cost as optimization objectives and taking the strengths of cementitious bodies at different ages as constraint conditions, and determining optimal parameters of the full-solid waste filling material. According to the invention, resource utilization of the metallurgical solid waste and the mine solid waste is realized, the bottlenecks of high carbon emission and high cost of a cement-based filling material are broken through, and a solution is provided for co-processing of the mine solid waste.

The invention discloses a multi-linkage combined load synchronous application strength testing device. The technical problems that in the prior art, the load applying mode is single, and the combined load cannot be synchronously applied are solved. The device comprises a connecting mechanism and a load applying mechanism, wherein the load applying mechanism comprises a torsional load applying structure, a load transmitting structure and a multi-linkage testing structure. The load transmission structure comprises a special-shaped stress plate and a torsional load transmission assembly, and the torsional load transmission assembly comprises a connecting chuck and a torque plug-in. By controlling the rotation of the torsion load transmission assembly, a pure torsion load applying mode or a conversion mode of converting torsion motion into radial load can be selectively realized, and multi-directional load detection is realized. The invention further provides a combined load synchronous applying function, the single driving source synchronously activates the torsion load path and the radial load path by adjusting the geometric positions of the torque plug-in and the load adjusting plate on the connecting chuck, and synchronous applying of the torsion load and the radial load is achieved.

The invention relates to the technical field of pipe bracket testing, in particular to a thermal insulation pipe bracket overall strength displacement overload testing device and method.The thermal insulation pipe bracket overall strength displacement overload testing device comprises a bearing base and further comprises a pipe bracket base arranged on the upper side of the bearing base, a connecting pipe bracket is installed at the upper end of the pipe bracket base, a clamping plate is clamped to the upper side of the bearing base, and a rotating shaft is arranged on the clamping plate in a penetrating mode; the bottom end of the rotating shaft is clamped and connected with a connecting gear, and an annular groove is formed in the edge of the upper side of the bearing base. According to the invention, the axial and radial strength of the pipe bracket can be tested in the displacement overload test process, the use limitation is low, the automation degree is high, the test efficiency of the heat insulation pipe bracket is obviously improved, the situation that the pipe bracket is broken to injure people due to broken objects in the displacement overload test process of the pipe bracket can be avoided, and the test efficiency is improved. The displacement overload test structure has a good safety protection function, is high in use safety, and also realizes a step-by-step disassembly function of the displacement overload test structure, so that barrier-free maintenance of the test structure is facilitated.

The invention provides an ultrasonic rebound comprehensive detection method and system for bridge pier column concrete strength, and relates to the technical field of structure nondestructive testing, and the method comprises the following steps: obtaining ultrasonic propagation velocity data of a to-be-detected part of a bridge pier column; obtaining springback value data of a to-be-detected part of the bridge pier column; performing coupling processing on the ultrasonic propagation speed data and the rebound value data, and determining the concrete strength of the to-be-detected part by combining the pouring bedding direction of the bridge pier column concrete and the strength increasing coefficient corresponding to the curing age. And the accuracy and the stability of bridge pier column concrete strength detection are obviously improved.

The invention discloses a method for testing the connection strength of a bolt fastener, and relates to the technical field of fastening mechanical analysis. The bolt fastener connection strength testing method comprises the following steps: acquiring bolt data through a built-in sensor in an electric wrench, analyzing, classifying and transmitting the bolt data to a relay station to obtain corresponding response bolt data, then sequencing the response bolt data according to priorities, and uploading the response bolt data to a cloud platform according to network conditions; prompting operation is carried out through the cloud platform and is fed back to the relay station; the effect of improving the accuracy of the connection strength test of the bolt fastener is achieved, and the problem that the accuracy of the connection strength test of the bolt fastener is low due to discontinuous signals in the prior art is solved.

A hydraulic mechanical component strength testing apparatus and a testing method, relating to the technical field of mechanical component strength testing, for use in performing strength testing on mechanical components with different temperatures. The testing apparatus comprises a frame and a clamping assembly; the clamping assembly comprises two clamping plates and a clamping drive mechanism; a vertically-arranged hydraulic rod is arranged at the top of the frame; a placement platform fixedly connected to the bottom of the frame is arranged below the hydraulic rod; the two clamping plates are located above the placement platform; a placement seat for supporting a mechanical component is arranged between the two clamping plates; a hydraulic sensor for measuring the pressure borne by the placement seat is arranged between the placement seat and the placement platform; the placement platform is further provided with a display in signal connection with the hydraulic sensor; and the clamping plates are each provided with a heating assembly used for heating the mechanical component. The present invention can perform strength testing on mechanical components with different temperatures.

The application relates to the field of concrete testing, in particular to a concrete seamless floor strength testing device and an operating method thereof. The concrete seamless floor strength testing device comprises a mounting frame, a moving driving part one, a connecting table one and a dynamic rebound apparatus; the upper end of the mounting frame is provided with the moving driving part one; the driving end of the moving driving part one is provided with the connecting table one, and the moving driving part one controls the up-down movement of the connecting table one; three dynamic rebound apparatuses are arranged on the connecting table one; the device further comprises a moving driving part two, a connecting table two and a cylinder; the connecting table one is provided with the moving driving part two; the driving end of the moving driving part two is provided with the connecting table two; three cylinders are arranged on the connecting table two; three groups of concrete seamless floor strength data are collected by the three dynamic rebound apparatuses for parallel comparison, so that the error is reduced, and the test area of the dynamic rebound apparatus is protected by the cylinder.

The invention relates to the technical field of pipe strength detection, and particularly provides a PEXA pipe strength detection table which comprises a base, a constant temperature box, a water injection detection mechanism, a supporting plate and an adjusting simulation mechanism. The end, connected with the moving plate, of the pipe is adjusted through cooperation of the rotary locking part, the telescopic part and the plugging locking part, the bending angle of the pipe is adjusted, the bending angle of the pipe is simulated through cooperation with the water injection detection mechanism, and different bending angles are adjusted. Therefore, the hydrostatic strength detection of the pipe in the bending state and the hydrostatic strength detection of the pipe in different bending states are realized, the hydrostatic strength of the pipe is comprehensively evaluated, the strength detection of the pipe is more comprehensive, accurate and reliable, and the problem that the detection is qualified in the linear state but fails in actual bending use is avoided.

The invention relates to the technical field of wood strength detection, in particular to a strength testing device for a wood composite board and a detection method.The strength testing device comprises a base table and a driving base fixed to the base table, and is characterized by further comprising symmetrical supporting mechanisms; a driving mechanism is arranged in the driving base so as to drive the two sets of supporting frames to be close to or away from each other. A centering roller and first pressure sensor cooperation mechanism of the transverse centering mechanism is adopted, a roller driving mechanism is combined to drive a driving roller to rotate, a plate is driven to transversely move through friction force, two sets of first pressure sensors detect the pressure bearing value of the roller in real time, and rotation is stopped when the numerical values on the two sides are equal; the transverse center of the plate is aligned with the axis of the driving roller, and personal errors are eliminated.

The invention relates to the technical field of material physical property testing, and discloses an injectable hydrogel wound dressing tensile strength testing method, which comprises: establishing a correlation model of the mass and the maximum fracture load of a standard sample at different temperatures, and the correlation model of the initial rigidity and the temperature; measuring the mass and the actual maximum fracture load of the to-be-measured sample, and determining the actual initial rigidity of the to-be-measured sample; according to the method, the actual initial stiffness is calculated, the equivalent temperature of the test is converted by utilizing the actual initial stiffness, the standard theoretical maximum fracture load is calculated in combination with the sample mass and the corresponding model, and the performance is judged by comparing the two, so that the measurement of the geometric dimension of an irregular sample is avoided by constructing the correlation between the mass and the mechanical performance; the quality control problem of an in-situ forming material is solved, and the reliability of a judgment result in an industrial environment is further ensured by utilizing mechanical response data of the same test through an integrated temperature self-adaptive calibration mechanism.

The present invention relates to the technical field of testing equipment, and specifically discloses a prestressed steel strand performance testing device, comprising a machine body and an adjustable test bench mounted on the top of the machine body via an inclination adjustment unit. The top of the adjustable test bench is also provided with a continuous impact unit, a guide unit, and two left-right symmetrical multi-stage clamping units, wherein the multi-stage clamping units include a primary bending clamping assembly, a bending control assembly, and a secondary circumferential clamping assembly. The present invention can perform tensile strength testing and fatigue strength performance testing on the steel strand in a horizontal state, and can also perform tensile strength testing and fatigue strength performance testing on the steel strand in an inclined state; the present invention performs multi-stage clamping and fixing of the steel strand by cooperating with the primary bending clamping assembly and the secondary circumferential clamping assembly, thereby achieving multi-point and multi-directional clamping, ensuring that the steel strand is subjected to uniform clamping force in multiple directions, and preventing the steel strand from sliding during the tensile strength test.

The utility model provides a cable tensile strength testing device, and relates to the technical field of deep shale gas horizontal well fracturing. The first clamping and fixing mechanism is used for clamping and fixing a ferrule structure of the tested cable, and the ferrule structure is formed by bending one end of the cable into an arc-shaped closed loop; the rope sleeving column is transversely connected to the base in a sliding mode, and the loop structure can be connected to the rope sleeving column in a sleeving mode; the tension detection mechanism comprises a tension detector, one end of the tension detector is connected with the rope sleeving column, and the other end of the tension detector is connected with the base; the winding mechanism comprises a winding roller and a driving motor which are in transmission connection, the winding roller is installed on the base, and a containing groove is formed in the side wall of the winding roller; and the second clamping mechanism is arranged in the accommodating groove and is used for clamping and fixing the other end of the cable. And through the arrangement of the winding roller, the cable can be pulled, and the device can adapt to cables with different lengths.

The invention belongs to the technical field of electrics, and particularly relates to a cable tensile strength testing device which comprises a testing platform; the cable testing device comprises a testing platform, two groups of inner side clamping mechanisms are symmetrically distributed above the testing platform and used for clamping and fixing a cable from the inner side of the cable, each inner side clamping mechanism comprises a supporting disc, the center position of each supporting disc is rotatably connected with a first lead screw, and each first lead screw is in threaded connection with a movable sleeve. The detection reliability is improved through internal and external cooperative clamping, the inner side clamping mechanism drives multiple sets of clamping plates to synchronously contract centripetally through a first lead screw, the outer side clamping mechanism adjusts the clamping force through the magnetic field intensity by means of the rheological characteristic of magnetorheological fluid, the outer side clamping mechanism flexibly wraps the outer wall of a cable, the clamping force is guaranteed, skin damage is avoided, and the detection efficiency is improved. The stress of the cable in the stretching process is more uniform, and the detection data is closer to the real tensile strength.

The invention provides a method and a system for testing the bonding strength of a laser cladding layer. According to the method, mechanical change data and energy release data at the crack tip are collected through a laser measurement device and a sound signal detection device, and a map is generated after alignment according to time. A laser distance measuring device is arranged to adjust the measuring frequency, and the multi-angle image shooting and three-dimensional scanning technologies are combined to record the three-dimensional path and the three-dimensional shape change. And calculating a minimum energy value based on the atlas and the three-dimensional path, inputting the minimum energy value and the position information into an intelligent decision model, and outputting a loading direction adjustment angle and a pressure change amplitude. And then the moving path of the bending test head is corrected, the output force of the hydraulic device is regulated and controlled, and the reliability reduction index is calculated in combination with three-dimensional data. According to the invention, accurate evaluation of the reliability of the laser cladding layer material and efficient control of crack propagation are realized.

The invention discloses a textile fabric tensile strength detection device, and belongs to the field of textile fabric detection.The textile fabric tensile strength detection device comprises a fixed base, a connecting plate is fixedly mounted on the fixed base, a clamping structure is mounted on the side wall of the connecting plate, and a fixed frame is slidably connected to the side wall of the connecting plate; a detection clamping plate is mounted on the fixed frame through an adjusting structure, and a force sensor is fixedly mounted on the detection clamping plate; and the smoothing structure comprises a moving plate which is connected to the inner wall of the fixed frame in a sliding mode, the side wall of the moving plate is fixedly connected with a sliding block, and the inner wall of the fixed frame is provided with a sliding groove corresponding to the sliding block. According to the cloth flattening device, cloth is flattened before detection, the cloth is kept flat, wrinkles on the cloth are avoided, therefore, during detection, detection data are more accurate, detection errors are reduced, meanwhile, the flattening roller is rotated in the moving process, and the flattening effect of the flattening roller is improved.

The invention belongs to the technical field of concrete testing, and particularly provides mechanical property testing equipment and a detection method for recycled aggregate concrete. The mechanical property testing equipment for the recycled aggregate concrete comprises a machine body, a reversing unit, a pressure testing unit and two tension testing units, the pressure testing unit is arranged in the vertical direction, and the two tension testing units are arranged in the horizontal direction and do not interfere with each other in spatial position. The reversing unit can clamp a test piece and drive the test piece to move between the vertical direction and the horizontal direction, the placement state of the recycled aggregate concrete test piece is switched and changed in real time, and the flexibility of the equipment during mechanical property testing is improved; the recycled aggregate concrete test piece can meet the requirements of two different test items of compressive strength test and tensile strength test.

The invention discloses a material tensile strength testing device suitable for a high-humidity and high-salt environment, the material tensile strength testing device comprises a box body, two connecting plates are fixedly connected to the rear side, close to the top, of an inner cavity of the box body, the two connecting plates are arranged in a bilateral symmetry mode, and two concentric-square-shaped frames are jointly and fixedly connected between the two connecting plates; through mutual cooperation of a driving gear, a concave mounting plate, an A-shaped mounting plate, a driving motor, a cleaning gear, an inner gear ring and the like, the outer surface of a reinforcing steel bar can be pretreated, and the situation that a test result is affected by corrosion of the surface of the reinforcing steel bar is prevented; through mutual cooperation of a component moving motor, a connecting plate, a double-thread lead screw, a moving block, a salt spray test box, a linkage rod, absorption cotton and other components, when a steel bar is tested in a continuous salt spray environment, salt spray liquid drops are attached to the outer surface of the steel bar, so that the surface of a sample is condensed; a local electrolyte membrane can be prevented from being formed on the surface of the steel bar to accelerate pitting corrosion or galvanic corrosion.

The invention discloses cement strength detection equipment for railway engineering detection based on an intelligent sensor, and relates to the technical field of cement strength detection. The cement strength detection equipment for railway engineering detection based on the intelligent sensor comprises a base, the top of the base is fixedly connected with a table board, and the top of the table board is fixedly connected with an electric hydraulic cylinder; an L-shaped rotating block; the bottom of the electric hydraulic cylinder is rotationally connected with an L-shaped rotating block through a first rotating shaft, a first fixing block is fixedly connected to the right face of the front side of the L-shaped rotating block, the bottom of the first fixing block is movably connected with a first hydraulic block through a first pushing block, and the top of the first hydraulic block is fixedly connected with the side face of the electric hydraulic cylinder through a second fixing block. The first hydraulic block is fixedly connected with a second hydraulic block through a first hose, and the top of the second hydraulic block is movably connected with a lifting block through a second push block. According to the cement strength detection equipment for railway engineering detection based on the intelligent sensor, when the equipment is used, the L-shaped rotating block is rotated to drive the lifting block to ascend, so that manual operation is reduced when a detection mode is changed.

The invention relates to the technical field of cable testing equipment, and discloses a cable protection tube axial tensile strength testing device and a testing method.The cable protection tube axial tensile strength testing device comprises a mounting base, the top of the mounting base is fixedly connected with a rack, the inner side of the rack is provided with a movable cross beam, the movable cross beam can move on the inner side of the rack, and the movable cross beam can move on the inner side of the rack. Mounting and fixing mechanisms are arranged on one side of the mounting base and one side of the movable cross beam, a flexible clamping mechanism is arranged on one side of each mounting and fixing mechanism, the mounting and fixing mechanisms facilitate replacement of the flexible clamping mechanisms, and the flexible clamping mechanisms are used for flexibly clamping a cable protection pipe. Air pressure is provided through the air pressure supply mechanism, flexible clamping is achieved through the flexible clamping mechanism, the clamping end is prevented from being damaged, clamping stability can be improved through the air pressure supply mechanism by means of internal and external extrusion air bags, slippage of a cable protection tube sample is avoided, meanwhile, the end of a cable protection tube is protected against damage, and therefore an accurate numerical value can be tested; the test precision is improved.

The invention provides a blended knitted fabric tensile strength testing device, and relates to the field of fabric testing devices.The blended knitted fabric tensile strength testing device comprises a workbench, winding rollers are symmetrically connected to the left end and the right end of the workbench, two shaft rods are arranged above the workbench in a sliding fit mode, and the shaft rods can move left and right; the end of the shaft rod is sequentially connected with an adsorption touch hand assembly and a corner reinforcing assembly. The tensile strength testing device for the blended knitted fabric is provided with an adsorption tentacle assembly, the adsorption tentacle assembly is composed of a hollow pipe, a tension band, a sliding rod, a sliding piece, a small spring, a pressure-sensitive sensing unit, a steel wire and an elastic rubber cushion block, whether pulling force is larger than adsorption force or not is judged by judging whether the sliding piece makes contact with the pressure-sensitive sensing unit or not, and the tensile strength of the blended knitted fabric is tested in a gradual air exhaust mode. The negative pressure in the hollow pipe is increased, so that the adsorption force is always greater than the judgment force. And the effect of automatically adjusting the adsorption force is achieved, and the situation that the clamping position is slightly loosened after being subjected to large tension is avoided.

The utility model discloses a film tensile strength detection stationary fixture, relates to film stationary fixture technical field, including tensile testing machine, moving plate and clamping subassembly, the clamping subassembly includes crossbeam and two chuck, the opposite side of two chuck is equipped with the groove, the bottom end center of crossbeam is fixedly equipped with the magnet block A, the magnet block A is equipped with the magnet block B, and the magnet block B is equipped with the magnet block B; a magnetic attraction block B is attracted to the bottom end of the magnetic attraction block A through magnetic force, and the bottom end of the magnetic attraction block B is fixedly connected with a fixing frame. The clamping positions of the upper end and the lower end of the thin film are fixed and aligned, the accuracy and repeatability of tensile strength detection are improved, the next thin film is rapidly fixed when multiple groups of thin films are tested, the operation convenience is improved, and the time for replacing thin film samples when the multiple groups of thin films are tested is shortened. The problems that the centering performance is poor when the thin film samples are clamped, and the accuracy and repeatability of sample inspection are poor due to the fact that clamping positions possibly have deviation when multiple thin film samples are detected are solved.

The invention discloses a performance detection method and system for ultra-high performance concrete, particularly relates to the technical field of building material performance detection, and aims to solve the problem of strength test discreteness caused by neglecting of an aging effect after high-temperature maintenance in an existing detection method. The method comprises the following steps: recording a first time point when a test piece is cooled at room temperature and a second time point when a press machine is loaded, and generating a comprehensive aging factor in combination with double quantitative analysis of a fiber pull-out fragment proportion and a crack fractal dimension in a damage process image; matching a strength correction coefficient from a preset table according to the aging factor, and dynamically calibrating a first compressive strength test result; accurate association between the aging damage mechanism and the macroscopic strength is achieved, and the reliability evaluation precision of the ultra-high performance concrete in major engineering is remarkably improved.

The invention provides an automobile central control panel strength test device made of a new material, and relates to the technical field of workpiece detection equipment, the automobile central control panel strength test device comprises a mounting plate, when a first group of detected panels are broken, a measuring plate is pushed to a corresponding height to be fixed, and in the subsequent measurement process, the first group of detected panels are fixed; only by observing whether the measuring plate is driven to move again at the moment of panel fracture, the anti-fracture strength difference of the automobile central control panel compared with the previous several groups of samples can be conveniently judged, and the automobile central control panel of which material has the optimal anti-fracture performance can be quickly discriminated in a visual manner; the problems that an existing detection process excessively depends on press equipment with high manufacturing cost to complete basic data acquisition, the detection process and result of a traditional data acquisition and processing mode are not visual and clear enough, and the strength performance of the central control panel cannot be judged at the first time are solved; the problem that the detection efficiency is undoubtedly reduced due to the fact that data needs to be summarized, integrated, compared and analyzed subsequently is solved.

The invention belongs to the technical field of sheath-core wire detection equipment, and discloses a sheath-core wire tension strength detection device which is technically characterized by comprising a workbench, fixing plates are fixedly mounted on the surface of the workbench, a transverse plate is slidably mounted between the two fixing plates, and a bearing column is rotatably mounted between the two fixing plates; a winding roller is arranged on the surface of the bearing column, a sheath core wire body is wound on the surface of the winding roller, a driving assembly is arranged on the surface of the fixing plate, a detection mechanism is arranged on the surface of the transverse plate, and the detection mechanism comprises a clamping assembly and an extrusion assembly. Through mutual cooperation of the clamping assembly, the extrusion assembly and the driving assembly, the winding process and the detection process of the sheath-core wire body can be conveniently switched, in the winding process, the tensile strength of the sheath-core wire body can be randomly and repeatedly detected, the sheath-core wire body does not need to be cut off during detection, and the detection efficiency is improved. And the detection efficiency and the detection precision are effectively improved.

The invention provides a dynamic strength test system and method for a soft rock biaxial Hopins compression bar, and the system comprises an axial impact loading unit which is used for generating an axial impact load; the confining pressure loading unit is used for applying radial confining pressure to the sample; the high-pressure fluid injection unit is used for injecting high-pressure fluid into the sample and simulating different internal water pressure and water saturation conditions; the data acquisition unit is used for recording impact load, confining pressure, internal water pressure and sample dynamic response data in real time; the control system is used for coordinately controlling the axial impact speed, the confining pressure and the internal water pressure value; by integrating the axial impact loading unit, the hydraulic servo confining pressure loading unit and the high-pressure fluid injection unit, a test platform capable of truly simulating a complex stress-seepage coupling environment where the deep soft rock is located is formed; therefore, the synchronous, independent and accurate control of axial dynamic load, constant or dynamic confining pressure and internal pore water pressure is realized.

The invention relates to a four-degree-of-freedom icing adhesion strength testing device and a testing method. The testing device comprises a fixed platform, and a refrigerating and freezing module and a four-degree-of-freedom motion testing module which are arranged on the fixed platform. The fixed platform comprises a flat plate and a height-adjustable telescopic rod. The refrigerating and freezing module comprises a refrigerating platform, a refrigerating plate inclination angle assembly and at least one ice making mold. The four-degree-of-freedom motion test module comprises a Z-axis moving sliding table, a Y-axis rotating inclination angle assembly, an X-axis moving sliding table, a Y-axis moving sliding table, a pull and push dynamometer clamp and a pull and push dynamometer; the pull and push dynamometer can drive ice blocks in the ice making mold to be separated from a test sample under the driving of the Z-axis moving sliding table, the Y-axis rotating dip angle assembly, the X-axis moving sliding table and the Y-axis moving sliding table. Compared with the prior art, the device has the advantages of high experiment efficiency, wide measurement range, adjustable experiment parameters, diversified measurement modes and the like.

The invention relates to the field of cable descending rope strength testing equipment, in particular to an ultrahigh molecular weight polyethylene fiber high-altitude cable descending rope strength detection device which comprises a plurality of strength testing assemblies, a climate simulation assembly, an environment simulation assembly and a stress simulation assembly. The strength testing assembly is used for testing the strength of the rope descending rope; the climate simulation assembly is used for simulating climate factors of the rope descending rope in the testing process; the environment simulation assembly is used for simulating environment factors of the rope descending rope in the testing process; the stress simulation assembly is used for simulating stress factors of the cable descending rope in the testing process, the conditions of stress, abrasion, lateral stress direction deflection, rope body deflection and the like of the cable descending rope in the actual falling process can be simulated, and the testing scene is made to be highly attached to the actual use scene of high-altitude mountain cable descending; therefore, more real and reliable strength performance data can be obtained.

The invention relates to the technical field of frame strength testing, in particular to an electric bicycle frame strength testing device which comprises two sets of driving teeth, the upper ends of one set of driving teeth are fixedly connected with a driving source through a rotating shaft, the surfaces of the driving teeth are in meshed connection with matching teeth, and the lower ends of the matching teeth are fixedly connected with a rotating cylinder. A plurality of sets of force application grooves are formed in the inner wall of the rotating cylinder at equal intervals, a lifting cylinder is arranged in the force application grooves, two sets of symmetrically-arranged vertical rods are elastically inserted into the lifting cylinder, the lower ends of the vertical rods are rotationally connected with detachable contact pieces, and two sets of telescopic heads are symmetrically inserted into the lifting cylinder; and a magnetic suction rod is inserted into the telescopic head. According to the invention, through cooperative use of all parts, multi-directional force application detection can be carried out on the electric bicycle frame, a bumping phenomenon can be simulated in a force application detection process, all-directional detection is realized, the accuracy of a detection result is ensured, and the detection efficiency is improved.

The invention discloses a storage battery electrode plate strength test system, and relates to the field of electrode plate strength test.The storage battery electrode plate strength test system comprises a multi-angle tool device and an array type impact test device.The multi-angle tool device comprises a base, a first tool platform, a second tool platform and a tool side plate, the first tool platform is rotationally installed on the base, and the second tool platform is rotationally installed on the tool side plate; the second tool platform is rotationally installed on the first tool platform, the rotation axis of the first tool platform is perpendicular to the rotation axis of the second tool platform on the horizontal plane, the array type impact testing device comprises an impact bottom plate, a lifting driving plate and impact rods, the impact rods are arranged on the impact bottom plate in a sliding and penetrating mode, and the impact rods are arranged in a rectangular array mode. The lifting driving plate is arranged above the impact bottom plate, a plurality of driving columns are arranged on the lifting driving plate in a rectangular array mode, each driving column is provided with an impact rod, the driving columns are detachably connected with the impact rods, simulation is conducted by accurately adjusting the tool angle, and it is ensured that a test scene is highly matched with the actual working condition.

To provide an adhesive strength testing device capable of testing a tensile adhesive strength in the thickness direction of an expansive adhesive with higher accuracy than before.SOLUTION: Provided is an adhesive strength testing device for testing a tensile adhesive strength of an expandable adhesive with respect to a predetermined material, the testing device including: a pair of test pieces made of the material; a spacer; a holding member that presses the test pieces facing each other via the spacer and holds the test pieces such that a space is formed between facing surfaces of the test pieces; and a tensile member that has a first attachment portion attached to a tensile force generator that generates a tensile force and a second attachment portion attached to each of the test pieces from which the holding structure has been removed, the facing surfaces being bonded to each other by the expandable adhesive disposed in the space, and that transmits the tensile force generated by the tensile force generator to each of the test pieces to pull the test pieces in a direction in which the facing surfaces are separated from each other.SELECTED DRAWING: Figure 8