38 results about "Spring Test" patented technology

The utility model discloses arc spring load test equipment, and relates to the technical field of spring test equipment. The device comprises a test board, the top of the test board is fixedly connected with a fixing frame and a first tension hook, a second tension hook is arranged above the first tension hook, and a protection device and a test assembly are arranged on the test board; the protection device comprises a linear motor, the bottom of the linear motor is slidably and electrically connected with an electric telescopic rod, and the bottom of the electric telescopic rod is fixedly connected with an extrusion plate. The electric telescopic rod can drive an extrusion plate to extrude an air bag, the air bag can convey air in the air bag into an air pressure cabin through an air conveying pipe, an air pressure rod and a protective baffle are driven to effectively protect a worker, the situation that the spring breaks and flies out in the testing process is prevented, and practicability is high.

The invention belongs to the technical field of circuit board detection, and discloses a traceless spring test needle and a gold surface traceless test method. Comprising a needle tube, a needle head and a first spring, a first sliding groove is formed in the inner wall of the needle tube, a sliding assembly is arranged in the first sliding groove, and the sliding assembly is located between the needle head and the first spring; the spiral first sliding groove is formed in the inner wall of the needle tube, and the sliding assembly is embedded into the spiral first sliding groove, so that the sliding assembly obtains circumferential rotating force while axially moving, and the needle head is driven to synchronously rotate. The needle head is in erasing type rotary contact when being in contact with a gold surface, so that a surface oxide layer or insulating stains are effectively removed; compared with a traditional vertical press-in mode, the rotating mechanism can greatly reduce the contact pressure in unit area; damage to micro welding spots and routing structures is reduced, and structural damage caused by local stress concentration is avoided.

This invention relates to the field of disc spring testing technology, and provides a disc spring testing device and method, comprising a frame; a pressure platform mounted on the frame for placing the disc spring to be tested; a pressure member mounted on the frame, positioned above the pressure platform, for applying axial pressure to the disc spring, the pressure member having a mounting groove with an opening facing the pressure platform; and an inner support mechanism disposed within the mounting groove, extending beyond the pressure member, capable of penetrating the inner hole of the disc spring under the influence of the pressure member, for centering support within the inner hole of the disc spring. This invention achieves coaxial positioning of the disc spring and the pressure member through the coaxial arrangement of the inner support mechanism and the centering support of the inner support member on the disc spring, solving the technical problem of positioning deviation of the positioning cylinder due to wear after long-term use in the prior art where the positioning cylinder is used to position the spring.

The utility model relates to the technical field of spring detection, and discloses a precision spring length detection device comprising a spring testing machine, the spring testing machine comprises a machine body, the machine body is slidably provided with an electric sliding seat, and the electric sliding seat and the machine body are both provided with positioning assemblies; the positioning assembly comprises a positioning disc fixedly connected with the machine body or the electric sliding base. According to the precise spring length detection device, the positioning assemblies are arranged on the movable module and the fixed module of the spring testing machine respectively, the axes of the two positioning assemblies coincide, when the spring is placed, the stop strip is inserted into the end of the spring, then the end of the spring can be temporarily limited on the stop strip, and then the spring can be fixed through mutual matching of the screw and the threaded hole in the stop strip. When the spring is fixed, the spring can be fixed, so that the two ends of the spring can be aligned in the fixing process of the spring, the whole spring is kept in a vertical state, and the accuracy degree of a subsequent length detection result is ensured.

The utility model discloses nitrogen spring pressure testing equipment, which relates to the technical field of nitrogen spring testing and comprises a testing fixing mechanism, a spring testing fixing plate is fixedly arranged on one side of the testing fixing mechanism, lateral clamping pieces are arranged on two sides of the spring testing fixing plate in a clamping manner, and the lateral clamping pieces are arranged on the testing fixing mechanism. According to the nitrogen spring testing machine, the problems that the fixing efficiency is low and the testing efficiency is low due to the fact that an existing nitrogen spring testing machine is tedious to fix the nitrogen spring are solved, the spring testing fixing plate is arranged, the guide block provides clamping guide for the sliding block, guide insertion of the nitrogen spring is achieved, and the nitrogen spring testing efficiency is improved. Through the arrangement of the lateral clamping piece, when the round frame clamping block is opened under the control of the air cylinder assembly, the inserting rod rises, the sliding block can be detached at the moment, when the round frame clamping block achieves clamping under the control of the air cylinder assembly, the inserting rod descends to clamp the sliding block, synchronous fixing is achieved, the fixing efficiency is high, and it can be guaranteed that the round frame clamping block is fixed in the center.

The invention particularly relates to a C-shaped spring axial friction force detection device and method, and belongs to the technical field of spring compression mechanical property detection. The device comprises a fixed base, the upper part of which is provided with a C-shaped spring test position; the fixed cladding tube is detachably arranged in the C-shaped spring test position and is used for accommodating the C-shaped spring and shrinking an opening of the C-shaped spring; and the upper pressing rod is used for being inserted into the fixed cladding tube and applying axial pressure to the C-shaped spring. According to the method, the device is used for detecting the axial friction force of the C-shaped spring. According to the invention, stable, reliable and effective fixation of the C-shaped spring is realized, and the C-shaped spring is ensured to be restrained to an approximately closed state at an opening position so as to simulate an actual working state of the C-shaped spring in a cladding tube, thereby realizing axial friction force detection of the C-shaped spring.

The invention discloses a spring buffer fixing structure and impact test equipment, and relates to the technical field of spring test.The spring buffer fixing structure comprises a base, a plurality of abutting parts, a synchronous part and a driving part, the abutting parts are arranged in the circumferential direction of the base at intervals, and the synchronous part is arranged on the base; each abutting part is provided with an inner end facing the middle of the base and an outer end opposite to the inner end, a clamping space is defined between the inner ends of the abutting parts and used for clamping the spring buffer, the abutting parts are linearly and movably installed on the base in the inward-outward direction, and at least one of the abutting parts is arranged to be a driving abutting part. According to the technical scheme, the linkage structure is adopted, and in the actual operation process, the good fixing effect on multiple different types of elevator volute spiral spring buffers can be achieved. And therefore, the convenience and the safety of fixing the volute spiral spring buffer of the elevator are improved to a certain extent.

The invention discloses a disc spring high-temperature compression fatigue testing device in the field of spring testing, and the device comprises a testing machine table which comprises a testing table and supporting legs arranged at the corners of the testing table; the heating box is fixedly arranged on the test bed; the test piece fixing assembly is arranged in the heating box; the compression assembly is arranged on the test bed and penetrates through the top of the heating box, the compression assembly achieves cyclic compression on the test piece fixing assembly through a motor and a gear shifting drum structure, and the gear shifting drum structure rotates one circle to compress the test piece fixing assembly at least twice; the invention also provides a test method. The disc spring compression fatigue test device has the beneficial effects that the drum body and the compression rod are arranged, the vertical reciprocating motion of the compression rod is achieved through the guide grooves in the circumferential surface of the drum body and the guide columns on the compression rod, then the compression fatigue test of the disc spring is achieved, and compared with cam or eccentric wheel structure pressing, the compression frequency is higher, and the compression stroke is longer at the same motor rotating speed; and the disc spring is more convenient to disassemble and assemble.

The utility model relates to the technical field of spring testing, in particular to spring tensile strength detection equipment which comprises a base, a controller and an air cylinder, the controller is arranged on one side of the base, the air cylinder is arranged above the base, and a protection mechanism comprises two protection shells rotationally connected to the base. A push rod connected with the air cylinder is arranged in the protective shell, and an adjusting rod is arranged between the push rod and the protective shell. By arranging the protective shell capable of being opened and closed, when the air cylinder drives the push rod to ascend to stretch the spring, the connecting block synchronously drives the adjusting rod to close the protective shell, and when the air cylinder drives the push rod to descend to compress or reset the spring, the protective shell is driven by the adjusting rod to unfold so that workers can conveniently and rapidly install the spring, and the working efficiency is improved; the tempered glass is arranged on the surface of the protective shell, so that when the protective shell is closed, a worker can still observe the change of the spring in the protective shell, and the worker can judge the strength of the spring conveniently.

The utility model discloses an automobile steel plate spring rigidity testing device, which relates to the technical field of steel plate spring testing and comprises a base, the top end of the base is fixedly connected with a detection mechanism, the detection mechanism comprises two groups of hydraulic rods, and the top ends of the two groups of hydraulic rods are respectively and fixedly connected with a group of pressure sensors. The top ends of the two groups of pressure sensors are respectively and fixedly connected with a group of cross beams, the tail ends of the two groups of cross beams are respectively and rotatably connected with a group of rotating shafts, a rotating seat is fixedly connected between the two groups of rotating shafts, and the outer wall of the rotating seat is slidably sleeved with a pressing block. According to the utility model, by turning over the cross beam and matching with the telescopic effect of the hydraulic rod, upward pushing or downward pulling force is applied to the steel plate spring, and the performance of the steel plate spring under the condition of different installation modes of a wheel bridge is simulated through different connection positions between the pressing block and the rotating seat; therefore, the detection process and the detection result better fit the state of the steel plate spring under the actual use condition, and the detection data are richer.

The invention relates to the technical field of spring fatigue testing machines, and discloses a multipurpose multi-station synchronous spring fatigue testing machine which comprises a front panel, a plurality of sliding grooves are formed in the front panel, a tension spring testing movable tool is arranged on one side of the front panel, a tension spring testing fixed tool is fixedly connected to one side of the front panel, and the tension spring testing movable tool is arranged on the other side of the front panel. One side of the front panel is provided with a pressure spring test movable tool, one side of the front panel is fixedly connected with a pressure spring test fixed tool, one side of the front panel is provided with a torsion spring test movable tool, and one side of the front panel is fixedly connected with a torsion spring test fixed tool. According to the invention, the motor drives the main sliding block, the tool sliding block and other structures to move, so that different testing movable tools slide, the effect that one device can test various springs at multiple stations at the same time is achieved, and the problems that most existing devices are used singly, one device can only test one type of springs, and the testing efficiency is low are solved. And equipment needs to be frequently replaced in the operation process.

A spring testing jig comprises a base, a fixing cover plate, a spring positioning pin, a spring positioning frame, a transmission swing piece, a reset piece and an angle ruler, the transmission swing piece comprises a pushing swing block which is directly opposite to a spring to be tested and presses the spring to be tested, a hinge hole position is arranged in the middle of the pushing swing block, and the spring positioning frame is arranged in the hinge hole position. A spring positioning pin penetrates through the hinge hole position to be fixed on the base, one end of the pushing swing block is driven by the transmission swing block, the other end of the pushing swing block is connected with a reset piece, and a bevel protractor for adjusting the initial angle of the pushing swing block is arranged on the side face of the pushing swing block. The spring test fixture is used for accurately positioning and clamping a spring to be tested, assembling the spring to a device of a power source, carrying out quantitative and fixed-frequency elastic fatigue limit life tests, and is accurate in positioning, convenient to adjust, convenient in auxiliary test, easy to assemble and high in reliability. Real and accurate data can be obtained, the operation process is simplified, and the working difficulty is reduced.

The invention discloses a torsion rod spring torsional fatigue life prediction method considering residual stress gradient evolution, and the method comprises the steps: carrying out the pre-torsion processing of a torsion rod spring test piece at different pre-torsion angles, and obtaining a torque-torsion angle curve at different pre-torsion angles; obtaining a relation curve of the torsion residual shear stress and the torsion angle; obtaining a relation curve of the torsion residual shear stress and the radius of the test piece based on a plane hypothesis theory; obtaining the magnitude and distribution curve of the residual stress after evolution of different fatigue cycles through analog simulation; fitting the evolved residual stress gradient curve to obtain a comprehensive parameter reflecting the residual stress gradient distribution; and establishing a fatigue life prediction model to predict the fatigue life of the test piece under different pre-torsion angles. According to the method, the residual stress evolution law of the pre-twisted torsion rod spring test piece is taken as a research object, the fatigue life of the torsion rod spring test piece under different pre-torsion angles can be predicted and evaluated, and the method has relatively good prediction precision.

The utility model relates to the technical field of spring detection, and discloses a protection device for spring manufacturing, which comprises a testboard, a guide mechanism arranged on the testboard, support legs fixedly arranged at four corners of the lower end of the testboard, a protection mechanism arranged on the testboard, the guide mechanism comprising a support column and a guide plate, the number of the supporting columns is multiple, the multiple supporting columns are fixed to the four corners of the upper end of the testing table, guide rods are fixedly arranged at the upper ends of the multiple supporting columns, the guide plate slides up and down at the upper end of the testing table, and a top plate is fixedly arranged at the upper ends of the multiple guide rods. According to the utility model, the device is simple in operation and accurate in positioning, can rapidly switch the spring test mode to ensure the later use effect of the spring, and has the protection test performance to ensure the safety of an operator, thereby improving the practicability and safety of the device.

The utility model discloses a high-voltage cable accessory spring pressure test tool at different temperatures, which belongs to the field of spring test tools and comprises a support, a force measurement assembly and an adjusting assembly, the support comprises a base and a beam which are arranged at intervals, the force measurement assembly is mounted on the base and provided with a pressure bearing portion for placing one end of a spring, and the adjusting assembly is mounted on the base. The force measuring assembly is used for displaying pressure borne by the pressure bearing part at different temperatures, the adjusting assembly comprises an adjusting screw rod and a first adjusting nut, the adjusting screw rod is installed on the cross beam, one end of the adjusting screw rod is close to the pressure bearing part and used for being sleeved with a spring, and the first adjusting nut is in threaded connection with the adjusting screw rod; when the first adjusting nut rotates relative to the adjusting screw rod, the distance between the first adjusting nut and the force measuring assembly can be changed so as to adjust the compression amount of the spring. The elastic force of different spring compression amounts can be measured, the change condition of the elastic force of the spring can be observed at different temperatures, the overall structure is simple, disassembly and assembly are convenient, and the cost is low.

The application belongs to the technical field of circuit board detection, and discloses a traceless spring test needle and a gold surface traceless test method. The traceless spring test needle comprises a needle tube, a needle head and a first spring. A first sliding groove is formed in the inner wall of the needle tube. A sliding assembly is arranged in the first sliding groove. The sliding assembly is located between the needle head and the first spring. A helical first sliding groove is arranged on the inner wall of the needle tube. The sliding assembly is embedded in the first sliding groove. The sliding assembly obtains circumferential rotation force while moving in the axial direction, and drives the needle head to rotate synchronously. The needle head rotates in a "erasing" mode when contacting the gold surface, effectively removing the surface oxidation layer or insulating stains. Compared with the traditional vertical pressing mode, the rotation mechanism can greatly reduce the contact pressure on the unit area, reduce the damage to the small welding points and wire bonding structure, and avoid the structural damage caused by local stress concentration.

The present invention discloses a spring impact test device and a spring remaining life analysis method. The spring impact test device includes a base, a top plate, a guide rod, a pressure block and a positioning plate. The top plate is located above the base. The guide rod and the positioning plate are connected between the top plate and the base. The spring test piece is sleeved on the guide rod and falls on the base. The pressure block is sleeved on the guide rod and has the freedom to move along the length of the guide rod so that the pressure block can fall freely to impact the spring test piece. The positioning plate is provided with a switch mechanism for fixing the pressure block at a set position on the guide rod. The positioning plate is provided with an anti-rebound mechanism to avoid secondary impact on the spring test piece during the pressure block falling process. The present invention is applied to the field of spring impact test analysis and can effectively avoid secondary impact on the spring during the impact test, reproduce the impact damage to the spring to the greatest extent, and improve the accuracy of the spring remaining life analysis.

The utility model discloses a double-station spring testing machine, and belongs to the technical field of spring tension and compression testing. Comprising a base, a frame body is arranged on the base, two tension and pressure sensors with different measuring ranges are connected to the frame body in a sliding mode, pressure test modules are arranged between the two tension and pressure sensors and the base, tension test modules are arranged between the two tension and pressure sensors and the top of the frame body, and the tension test modules are connected with the frame body in a sliding mode. The frame body is further provided with a driving mechanism used for driving the pull pressure sensor to slide. Through the arrangement of the two tension and pressure sensors with different measuring ranges, four springs can be tested at the same time, and a worker can freely select the tension and pressure sensors with different measuring ranges according to the physical properties of the tested springs, so that the spring test range is expanded, and the test efficiency is improved. And more springs can be tested in the same working space, so that the space occupied by equipment is saved, and the working efficiency is improved.

The utility model discloses wave spring fatigue performance testing equipment, which relates to the technical field of wave spring fatigue performance testing and comprises a bottom box body, two longitudinal driving assemblies are symmetrically and fixedly mounted at the upper end of the bottom box body, and a transverse supporting plate is fixedly mounted at the upper ends of the two longitudinal driving assemblies. A transverse supporting plate is installed on the two longitudinal driving assemblies, a moving plate is installed on the two longitudinal driving assemblies and located below the transverse supporting plate, two connecting assemblies are installed on the transverse supporting plate in a sliding mode, and each connecting assembly is composed of an installation base plate, a first L-shaped connecting rod and a fixed magnet. According to the wave spring testing device, the tested wave spring can be blocked and protected, so that the wave spring can be prevented from being touched by an external object or sundries are prevented from falling into a gap of the wave spring when the wave spring is tested, the probability that the wave spring is accidentally influenced in the testing process is further reduced, and finally the accuracy of a wave spring testing result can be guaranteed.

The utility model relates to the technical field of spring production test, and discloses spring tension and compression test equipment which comprises a box body, a workbench is fixedly connected in the box body, one side of the top of the workbench is fixedly connected with a sleeve box, and the other side of the top of the workbench is fixedly connected with a sliding rod. A rack is fixedly connected to the inner wall of the sleeve box, a fixing groove is formed in one side of the rack, a connecting sliding block is slidably connected to the inner wall of the fixing groove, a connecting block is fixedly connected to the other end of the connecting sliding block, a motor is fixedly connected to the interior of the connecting block, and a gear is fixedly connected to the output end of the motor. According to the utility model, the lifting block descends to extrude the protective cover, so that the protective cover descends synchronously along with the descending of the lifting block under the action of the second spring at the bottom of the protective cover, the top of the protective cover can be attached to the bottom of the lifting block, and effective external protection can be realized in the spring test process.

The utility model relates to the technical field of spring testing, and discloses a spring fatigue testing device which comprises a working box, an observation box is arranged at the top of the working box, and a testing mechanism is arranged in the working box. According to the spring fatigue testing device, by arranging the testing mechanism, when a spring fatigue test needs to be carried out, a cover plate is unscrewed through threads, a spring is placed outside a square limiting rod, and the bottom end of the spring is rotated by several circles to enter two fixing rings, so that the bottom of the spring is fixedly mounted on the two fixing rings; then a cover plate is screwed into the top of a square limiting rod, the top of the spring is clamped into a groove in the top of a clamping plate, the top of the spring is clamped by rotating a small threaded rod, then a servo motor is started, repeated rotation is conducted through a set program, and the spring can be tested; and the maximum compression times of the spring can be tested.

The utility model relates to the technical field of spring tests, and discloses an electric large spring press-fitting testing machine which comprises a base, limiting grooves are formed in the front side and the rear side of the upper portion of the base, sliding grooves are formed in the upper portions of the limiting grooves, and protection assemblies are arranged in the limiting grooves and used for protecting a press-fitting test. A mounting frame is fixedly connected to the upper middle of the base, a display panel is fixedly connected to the front side of the upper portion of the mounting frame, a mounting block is slidably connected to the inner side of the middle of the mounting frame, mounting shafts are fixedly connected to the opposite sides of the upper portion of the mounting block, and hooks are fixedly connected to the opposite sides of the mounting shafts. An adjusting assembly is arranged at the upper middle part of the mounting frame and is used for adjusting the test tension. According to the utility model, through cooperation of the electric telescopic rod, the protective cover, the slide block, the limiting block and other structures, protection can be realized when the press-fitting testing machine carries out a press-fitting test on an electric power large spring, and the electric power large spring is prevented from being broken in the test and hurting a tester.

The utility model relates to the technical field of spring tension and compression testing machine fixtures, in particular to a spring tension and compression testing machine fixture structure convenient for fixture replacement, which comprises a spring testing machine and a test bed, the test bed is fixedly mounted in the spring testing machine, and a plurality of fixtures are arranged in the spring testing machine; the replacement detection mechanism is used for conveniently replacing the clamp and detecting the installation stability of the clamp after installation, and the replacement detection mechanism is arranged on the outer side of the clamp; wherein the replacement detection mechanism comprises a mounting frame arranged on the outer side of the clamp; when the clamp is used, the clamp can be conveniently and rapidly mounted and dismounted through the dismounting and mounting assembly, so that the clamp is very convenient to replace, the stability between the clamp and the mounting frame can be monitored in real time through the detection assembly when the clamp is mounted and used each time, and it is ensured that the clamp is not loosened or dislocated in the using process; and the test deviation or error caused by the instability of the clamp is avoided.

The invention discloses a disc spring high-temperature compression test device and a use method thereof.The disc spring high-temperature compression test device comprises a fixing mechanism and a heating mechanism, and the fixing mechanism is used for fixing a disc spring; and the heating mechanism sleeves the outer side of the fixing mechanism and provides a high-temperature environment for the fixing mechanism and the disc spring. The fixing mechanism comprises a base, a shaft rod and a top cover which are coaxially arranged; the bottom of the base is connected with a tension tester, an accommodating space is formed in the base, and an opening is formed in the top of the accommodating space; the shaft rod is placed in the accommodating space; the top cover is sleeved on the shaft rod, and the top end of the shaft rod protrudes out of the top cover and is connected with a tension tester; the top cover is detachably connected with the top of the base. Wherein the shaft rod comprises an extension rod, a plurality of disc springs, a plurality of disc springs and a plurality of disc springs, and the extension rod extends in the axial direction of the extension rod and is inserted into the disc springs; a plurality of first grooves are formed in the side wall of the extension rod so that the contact area between the extension rod and the disc spring can be reduced. The device provided by the invention is beneficial to improving the accuracy of disc spring test data.

The utility model relates to the technical field of plate spring testing equipment, and discloses a testing device for testing the fatigue of a plate spring, which comprises a bottom box, a shell fixedly mounted at the top of the bottom box, a testing mechanism arranged on the shell, two fixed seats fixedly mounted at the top of the bottom box, a sliding seat slidably mounted on the fixed seats, two U-shaped grooves and two grooves formed in the top of the sliding seat, and a clamping mechanism arranged on the U-shaped grooves, the groove is located between the two U-shaped grooves, a plate spring is arranged in the groove, and a connecting mechanism is arranged between the plate spring and the U-shaped grooves; a protection mechanism is arranged on the bottom box, and two rotating shafts are rotationally installed on the inner wall of the rear side of the bottom box. Compared with the prior art, the device has the following advantages and effects that by arranging the protection mechanism, when the stamping head descends to conduct fatigue inspection on the plate spring, the protection plate can be driven to extend upwards from the plate hole, the blocking effect can be achieved through the protection plate, and the purposes that fragments generated by fatigue fracture of the plate spring are prevented from splashing to injure people, and the safety of operators is guaranteed can be achieved.

The application relates to a disc spring life detection clamp, which comprises a counterweight base, a mounting seat is arranged on the counterweight base, a driving mechanism and a fixing seat are mounted on the mounting seat, the output end of the driving mechanism faces the fixing seat, a gland is fixedly connected to the output end, a penetrating rod mechanism for penetrating a disc spring is detachably connected to the fixing seat, one end of the penetrating rod mechanism penetrates through the fixing seat and extends into the gland, so that a detection station for accommodating and positioning a disc spring test piece is formed. The driving mechanism is used for driving the gland to perform high-frequency reciprocating motion, manual pressing is replaced, unattended continuous operation can be realized, the detection efficiency is greatly improved, and the labor intensity is reduced; mechanical driving ensures that the stroke, speed and position precision of each compression are highly consistent, human factor interference is eliminated, the test result has excellent repeatability and comparability; mechanical positioning and clamping are adopted, the process is standardized, accidental damage caused by manual operation is avoided, and the integrity of the test piece before the test and the fairness of the test are ensured.

The utility model relates to the technical field of steel plate springs, and discloses a steel plate spring testing device which comprises a detection box, a protective door is movably installed at the front end of the detection box, supporting legs are installed at the positions, close to the two sides, in the detection box, and a steel plate spring body is arranged at the top ends of the supporting legs. Pressure sensors are arranged at the joints of the supporting legs and the steel plate spring body, electric push rods are installed in the middles of the two sides of the detection box, and push rods of the two electric push rods penetrate through the detection box and are fixedly connected with limiting blocks. The detection temperature in the detection box can be adjusted as required through a hydraulic push rod and a heating pipe, and the pressure is gradually increased until the steel plate spring body is damaged, so that the ultimate strength of the steel plate spring body is conveniently measured, the steel plate spring body is prevented from being broken and splashed in the testing process, and injury to personnel is avoided; and the hydraulic push rod can be adjusted to different positions of the steel plate spring body to apply force.

The utility model discloses a spring elasticity testing tool, and belongs to the technical field of spring testing. A spring elasticity testing tool comprises a base with a support installed on the top, and further comprises a transverse plate installed on the support, a tension assembly used for stretching a spring is arranged on the transverse plate, and a lifting piece used for driving the transverse plate to do lifting motion is arranged on the support; the two protection plates are installed on the base in a sliding mode, and a driving part is arranged on the base; according to the utility model, through the cooperation of the electric telescopic rod, the transverse plate and the elastic band, the two protection plates can be synchronously driven to define a tubular space for wrapping the spring when the spring is stretched, so that the safety of the spring testing process can be greatly improved, and the damage to surrounding people and objects caused by the fracture of the spring can be avoided; and safe production of enterprises is facilitated.

The present application belongs to the technical field of detection fixture, and specifically discloses a detection fixture for spring parts, which comprises a top rod, a pressing rod arranged above the top rod and matched with the top rod in a gap, an arc clamping piece I connected with the top rod, and an arc clamping piece II connected with the pressing rod. The present application has the characteristics of effective constraint and positioning, reliability, convenient loading and unloading, quick and accurate replacement of test bodies, etc. The present application effectively improves the test reliability by effectively constraining the spring joint surface and the outer cylindrical surface for testing springs of various specifications, and by designing the temperature control section and the limiting section together. As a positioning detection fixture, the present application can quickly position the outer circle, reference surface and radial displacement of the parts, and after quick and convenient testing and replacement of the test body, the subsequent test can be directly performed without complex positioning, thereby effectively reducing the test period and improving the test accuracy and efficiency.

The utility model discloses a spiral steel spring test bed with a protective net, and belongs to the technical field of spring test beds. Comprising a test bench, and a protective net is arranged on the periphery of the test bench. The protective net comprises a connecting fixing frame arranged on the periphery of the test bed, and a net-shaped cover body is fixed to the connecting fixing frame and used for protecting impact force generated when the spiral steel spring on the test bed cracks. And a locking door is arranged on the net-shaped cover body on the front surface of the test bed. The net-shaped cover body is made of a high-strength material, has good toughness and impact resistance, and can effectively prevent impact force generated by cracking. The arrangement of the locking door is convenient for an operator to set or take away the spring, the sealing performance of the protective net in the test process is ensured, and the operation is safer and more convenient. Due to the existence of the protective net, interruption caused by safety problems in the test process is reduced, and the continuity and efficiency of the test are improved.