432 results about "Impact test" patented technology

The utility model discloses a material testing device under erosion and cavitation coupling action, which comprises a container, an ultrasonic transducer, an injector head and a circulating device, a placing table is arranged in the container, the ultrasonic transducer is used for being arranged above the placing table, the injector head is arranged at the lower end of the ultrasonic transducer, and the circulating device is arranged on the placing table. The circulating device comprises a booster pump, a liquid inlet of the booster pump is communicated with the container, and a liquid outlet of the booster pump is connected with the injector head through a pipeline; in the using state, the ultrasonic transducer is electrically connected with an ultrasonic power source through a wire. According to the utility model, the erosion medium is pumped into the injector head through the booster pump, and meanwhile, the ultrasonic transducer enables the erosion medium to generate a large number of bubbles in the injector head, so that the erosion medium with the bubbles impacts a test material at a high speed, and the test condition of the hydraulic mechanical material is met.

The invention discloses a marine equipment impact test platform, and relates to the technical field of marine equipment tests. The device comprises a test pool, the bottom of the test pool is fixedly provided with a plurality of water cannon pipes, the top ends of the plurality of water cannon pipes are fixedly provided with turning pipes, the test pool is internally provided with a test floating platform, the test floating platform is internally fixedly provided with a placing platform, and the placing platform is internally provided with equipment to be tested. By arranging the water cannon pipes, a high-pressure water source conveys high-pressure water flow into the test pool through the water cannon pipes, and meanwhile, the water flow is turned through the turning pipes, so that irregular undercurrent is formed in the test pool, large-scale waves appear on the water surface of the test pool, and the test floating platform shakes along with the waves; the wave amplitude can be controlled by controlling the water pressure, so that the stability of the to-be-tested equipment when the ship body is impacted by waves is tested, the scene that the ship body shakes in storm waves is simulated, and the test result is closer to the actual environment.

The invention relates to the technical field of numerical simulation of rock dynamics, in particular to a numerical simulation method and system for the whole process of ore rock fracture based on FDEM impact loads.The method comprises the steps that a continuous medium structure is discretized into a finite element network composed of triangular units through FDEM, and an ore rock impact test model is constructed; setting material parameters and impact speed boundary conditions according to the ore rock impact test model; a normal contact force calculation model and a tangential contact force calculation model are established according to material parameters and impact speed boundary conditions, and coordinates and speed updating results of triangular unit nodes are obtained in combination with the Newton second law and the calculation models; and performing visual analysis based on the coordinate and speed updating result, and outputting crack propagation, stress field and energy evolution results under the impact load. The method can accurately simulate the crack propagation, the fracture mode and the energy evolution law of the ore rock under the impact load, quantitatively researches the crushing characteristics and the energy evolution law of the ore rock, and provides a calculation method for the research of the crushing mechanism of the ore rock.

The invention discloses a testing method and device of a low-temperature pump, electronic equipment and a storage medium, and relates to the technical field of vacuum technology and vacuum pump performance tests.The testing method of the low-temperature pump comprises the steps that the first pressure of a first inflation chamber is obtained, and an air distribution mode is determined based on the first pressure; after gas distribution is completed based on the gas distribution mode, an impact test is started to introduce gas into the cryogenic pump; and acquiring temperature test data of the cryogenic pump, and determining the validity of the current test based on the temperature test data. According to the testing method of the low-temperature pump, the gas distribution process is more accurate through multiple gas distribution modes, the validity of the test data is judged through the temperature test data of the impact test, and the transition capacity parameter of the low-temperature pump is subjected to process inspection depending on experience; the method is converted into a standardized metering process which is high in reliability, high in efficiency and reproducible.

The invention discloses a battery impact test device, which relates to the technical field of battery test and comprises a base fixed on the ground; the supporting frame is connected to the base through a telescopic component, and a through channel is formed in the supporting frame; the impact module is rotationally arranged in the channel through a cavity rotating shaft and is provided with a plurality of mounting planes, and through holes communicated with the channel are formed in the mounting planes; the impact heads can be mounted on the mounting plane in multiple directions; and the driving part is arranged on one side of the supporting frame and used for driving the impact module to rotate on the supporting frame so as to switch the impact heads on different mounting planes of the impact module. By arranging the impact module with multiple mounting planes, a plurality of impact heads can be mounted on the impact module along different directions so as to simulate different impact obstacles and simulation impact tests at different angles in actual conditions; and the impact heads can be freely switched in different obstacle collision experiments.

The utility model relates to the technical field of drop hammer impact experiments, in particular to a drop hammer impact experiment device for pipeline detection, which comprises a pipeline storage box, an impact drop hammer structure is arranged above the pipeline storage box, and a repeated springback prevention structure is mounted on the upper surface of the pipeline storage box. And the repeated springback prevention structure comprises a fixing block, a first electric telescopic rod, a bulletproof baffle, an infrared transmitter and an infrared receiver, a pipeline clamping structure is arranged in the pipeline storage box, and a groove to be hammered and punched is formed in the upper surface of the pipeline storage box. According to the utility model, the falling impact hammer can be prevented from repeatedly and continuously impacting the pipeline to be detected by the falling impact hammer through fixing and clamping after the falling impact hammer is impacted by the repeated springback prevention structure, so that the impact detection result is prevented from being influenced, and the accurate detection value of the pipeline cannot be obtained.

The utility model relates to a kind of multi-plate friction clutch impact test device, the utility model aims at providing a kind of multi-plate friction clutch impact test device, for solving the problem of above-mentioned friction clutch impact test, multi-plate friction clutch is installed in clutch box, four laser emission assemblies are respectively arranged in front, rear, left side and right side of clutch box, laser emission assembly is set towards clutch box, first pinion is fixedly installed on the input shaft of multi-plate friction clutch, two impact components are fixedly connected with the input shaft of multi-plate friction clutch, first driver is fixedly connected with first gear wheel, the output shaft of multi-plate friction clutch is fixedly connected with another two impact components, second pinion is fixedly installed on the output shaft of multi-plate friction clutch, second driver is fixedly connected with second gear wheel.The utility model belongs to the field of friction clutch impact test.

The invention relates to the technical field of clamps, in particular to a multifunctional universal mechanical test clamp which comprises a pitching adjusting mechanism, a mounting platform, at least two first sliding rails and a plurality of second sliding rails. The mounting platform is connected with the pitching adjusting mechanism, and the pitching adjusting mechanism is used for adjusting the pitching angle of the mounting platform; the first sliding rail is arranged on the mounting platform, the plurality of second sliding rails are arranged on the first sliding rail in a sliding manner, the second sliding rails and the first sliding rail are fixed through a first fixing assembly, the second sliding rails are perpendicular to the first sliding rail, the second sliding rails are used for mounting a test piece, and the test piece is arranged on the mounting platform. The test piece is fixed at any position of the second slide rail through the second fixing assembly. The clamp has various functions and can be suitable for vibration tests, impact tests and acceleration tests.

The utility model provides a pendulum bob impact device, and belongs to the technical field of pendulum bob impact tests. A pendulum bob impact device comprises a pendulum bob, bases and an abutting piece, a rotating shaft is connected to the pendulum bob, and the bases are arranged on the two sides of the pendulum bob and symmetrically arranged. A containing space capable of containing a tool is formed in the middle of the pendulum bob, and an impact cutting edge is connected into the containing space. The base is connected with an abutting piece, the abutting piece is in an L shape, a first through hole is formed in one side of the abutting piece, and the abutting piece is connected to the base through threads. A protrusion is connected to the side, close to the pendulum bob, of each abutting piece, and a tool can be placed between the two abutting pieces. The utility model has the advantage of high precision.

The application belongs to the field of bird impact test and is a bird impact test device simulating a real engine, comprising an air cannon, a first ejection plate, a second ejection plate, a first fixed support, an air intake casing and a second fixed support; the first ejection plate and the second ejection plate are arranged in front and back, and the first fixed support and the air intake casing are both located behind the second ejection plate; the air intake casing is installed on the first fixed support; the second fixed support is fixed with a fan casing; the first ejection plate, the second ejection plate, the first fixed support, the air intake casing and the second fixed support are arranged to simulate the impact of the bird on the fan casing and the component unit after the first simulated fan blade is impacted by the bird, to realize the ejection impact of the air intake on the bird body, to simulate the process of the bird body impacting the air intake support plate, to effectively simulate the change of the bird body motion trajectory and the cutting and deceleration of the air intake support plate on the bird body in the case of limited space, and to realize the accurate evaluation of the ability of the engine to withstand the bird body impact.

The invention provides an impact test device and method for a brake disc of a high-speed train, and relates to the technical field of impact test equipment, the impact test device comprises a base, a brake disc to be detected is placed on a placement table, an impact seat falls under the action of gravity to impact the brake disc to be detected above the placement table, and a base plate is arranged below the base. A mounting base plate is mounted at the bottom end of the base plate, the base plate is fixedly mounted on the ground by means of the mounting base plate, a buffer unit is arranged between the base and the base plate, and when the impact seat impacts the placement table under the action of gravity, impact force can be removed by means of the buffer unit; the arc-shaped elastic piece, the damping part and the buffering rubber ball are matched with a multi-stage buffering structure of self-adaptive pressurization of the air cylinder, and graded unloading and energy dissipation can be carried out on instantaneous strong loads after impact.

This application proposes a small-scale universal modal testing device for rockets, comprising a suspension mechanism for suspending the rocket body and a testing mechanism with an impact end, wherein the impact end can impact the rocket body around a first axis. It also includes a drive mechanism for driving the impact end to impact the rocket body, and a testing platform for mounting the suspension mechanism and the testing mechanism. In use, the impact end is rotated around the rocket body with the first axis as the center and stopped at a suitable position. At this point, the drive mechanism drives the impact end to impact the rocket body. Compared to existing technologies that only include four impact points (left, right, top, and bottom), the impact end that can surround the rocket body has more impact positions, allowing for more flexible adjustment and facilitating the simulation of multi-position impact tests.

The utility model discloses a comprehensive alarm performance testing device, which belongs to the field of alarm testing and comprises a base station. The base station is provided with an impact sensitivity testing mechanism used for adjusting the simulation impact strength and testing the sensitivity of the impact alarm. An impact material replacing mechanism for automatically replacing an impact material is mounted on the base station; the collision sensitivity testing mechanism comprises a collision simulation assembly, a force storage assembly, a rotating rod limiting assembly and a collision force adjusting assembly; the base table, the force storage assembly, the rotating rod limiting assembly and the collision force adjusting assembly are all connected with the collision simulation assembly; the force storage assembly and the rotating rod limiting assembly are both connected with the base table. Through the above mode, different forces can be rapidly adjusted to simulate the reliability of the collision alarm, and the time consumed by manual mounting and dismounting of the loading block is reduced.

The invention discloses a horizontal continuous impact test device and method, and particularly relates to the technical field of mechanical environment tests.The horizontal continuous impact test device comprises a test base, a force bearing seat and a workpiece assembly seat are installed at the top of the test base, and a through installation frame is installed in the middle of the force bearing seat; an impact test rod directly facing the workpiece assembly seat is slidably connected to the mounting rack, and a transmission block is mounted in the middle of the impact test rod. A motor supporting frame is mounted on the outer side of the mounting frame, a first servo motor is mounted on the outer side of the motor supporting frame, an output shaft of the first servo motor penetrates through the mounting frame to be provided with an adjusting shaft, a linkage shaft is mounted at the end of the adjusting shaft, a driving ring is hinged to the middle of the linkage shaft, and a first annular groove is formed in the middle of the outer side of the driving ring. The transmission block is slidably connected into the first annular groove, and an adjusting mechanism used for adjusting the inclination angle of the driving ring is installed in the force bearing base. Through rotation of the inclined driving ring, a continuous horizontal impact test is realized.

The invention relates to a test system and method for characterization of a sympathetic detonation multi-physical coupling effect field, belongs to the technical field of near-field explosion impact tests, and solves the problem of inaccurate characterization of a charging sympathetic detonation effect field in the prior art. The device comprises a to-be-tested charging module, a fragment group size and quantity analysis module, a fragment group speed measurement module, an explosive shock wave overpressure test module and a sympathetic detonation visual characterization module, the fragment group size quantity analysis module is used for acquiring the load penetration perforation quantity and perforation area of the near-field fragment group; the explosion shock wave overpressure test module is used for testing a near-field explosion shock wave overpressure parameter; the fragment group speed measurement module is used for measuring near-field dense fragment group speed parameters; and the sympathetic detonation visualization characterization module is used for measuring the dynamic response process of the sympathetic detonation test. According to the invention, the test of the multi-physical coupling effect field in the charge sympathetic detonation process is realized.

The invention relates to the technical field of tire testing, in particular to a military tire explosion impact test bed which comprises a supporting mechanism. The device further comprises a detection mechanism and an impact mechanism, the supporting mechanism is installed in the impact mechanism, and the detection mechanism is installed on the supporting mechanism. The supporting mechanism is used for adjusting the height of a tire, the impact mechanism is used for performing explosion impact on the tire, and the detection mechanism is used for performing static balance detection on the tire; a tire is installed on the detection mechanism, the height of the tire is adjusted through the supporting mechanism, so that the tire is located above the impact mechanism, static balance detection is carried out on the tire before testing, then the tire is moved into the impact mechanism through the supporting mechanism, explosion impact is carried out on the tire through the impact mechanism, and after impact is finished, the tire is taken out. And the tire is moved to the position above the impact mechanism again, static balance detection is conducted again, and according to detection before and after impact, workers can conveniently evaluate the performance of the military tire, so that the practicability of the equipment is improved.

The invention relates to the technical field of pedestrian protection head type CAE simulation and calibration of automobile active engine hoods, in particular to an active engine hood pedestrian protection head type simulation analysis method and device, a vehicle and equipment, and the method comprises the steps: firstly obtaining a plurality of pedestrian protection head type point locations on an active engine hood, and dividing the pedestrian protection head type point locations into at least one point location group; on the same active engine hood, head type impact tests are carried out on the point locations in each group in sequence, test damage is reserved, and test data of each point location are recorded; and finally, according to the grouped test data and the test sequence of each point location, aiming at the head type simulation model, completing model calibration on parts corresponding to each pedestrian protection head type point location in the calibration model. Therefore, the problems of low pedestrian protection head shape calibration efficiency, insufficient precision and the like in related technologies are solved.

The invention relates to the technical field of cable branch boxes, in particular to a cable branch box and production test equipment thereof.The cable branch box comprises a cabinet body, a hole channel communicated with an inner cavity of the cabinet body is formed in the bottom end of the cabinet body, and a base plate is fixedly arranged on the peripheral side face of the cabinet body and can be matched with special test equipment for diversified detection; the production test equipment comprises a rack, an intermittent impact mechanism and a lifting transposition mechanism are installed at the two ends of the rack respectively, a linkage assembly is installed at the bottom of the rack, the intermittent impact mechanism is composed of a rotation part and an impact part, and the linkage assembly is used for driving the rotation part and the lifting transposition mechanism to rotate periodically. According to the cabinet body impact test device, impact tests can be sequentially carried out on four side surfaces of the cabinet body at different heights, and the change of the pressure state in the cabinet body can be controlled according to the change of the descending height, so that impact tests can be sequentially carried out on the cabinet body under the conditions of normal pressure, high pressure and negative pressure, the purpose of one machine with multiple purposes is achieved, and the applicability of the equipment is improved.

To provide an impact energy absorption structure member having excellent impact energy absorption performance relative to an oblique impact.SOLUTION: An impact energy absorption structure member includes an aluminum extrusion material and has a shape in which an extrusion material cross section with a specific shape extends in an extrusion direction that is a vertical direction to the extrusion material cross section. The extrusion material cross section includes a shape in which two or more sections surrounded by a wall part comprising the aluminum extrusion material are aligned adjacent to each other in one direction. In an impact test, before a section 1 that receives an impact first is crushed completely, a boundary of a section 2 that receives the impact secondarily with the section 1 is deformed in an inner direction of the section 2, and a wall part that does not come into contact with a section other than the section 2 is deformed in an outer direction of the section 2 on the extrusion material cross section.SELECTED DRAWING: Figure 1

The utility model discloses energy-saving cold and hot impact test equipment which comprises a cold and hot impact equipment main body, a refrigeration mechanism, a heating mechanism, a driving mechanism, a track mechanism, an experiment table mechanism and an air curtain mechanism, a partition is arranged in the middle section of the interior of the cold and hot impact equipment main body, and an air curtain air channel is formed in the partition; the air curtain mechanism is fixedly installed on the side wall of the cold and hot impact equipment, an air opening of the air curtain mechanism right faces the air curtain air channel, the rail mechanism is arranged in the cold and hot impact equipment body, part of the rail mechanism penetrates through the top wall of the cold and hot impact equipment to be connected with the driving mechanism, and the driving mechanism is fixedly installed at the top of the cold and hot impact equipment body. The experiment table mechanism moves up and down along the track mechanism, the refrigerating mechanism and the heating mechanism are both fixedly installed on the side wall in the cold and hot impact device, and the device has the advantages that energy is saved, and cold and hot cavities can be replaced more quickly.

The invention discloses a gas turbine overall impact environment model test device, a test method and an optimization method, and belongs to the technical field of gas turbine testing. The invention aims to reduce the impact test cost of the gas turbine and improve the impact resistance of the gas turbine. Comprising a mounting plate and a scaling test assembly arranged on the mounting plate; the size shrinkage ratio of the prototype gas turbine to the test assembly is lambda; the first-order inherent frequency of the test assembly is lambda times of the first-order inherent frequency of the prototype gas turbine; the mass center position of the test assembly is the same as that of the prototype gas turbine; the total mass of the test assembly is 1 / lambda3 times of the total mass of the prototype gas turbine; the gas turbine impact environment model device is formed by adopting the simulation model structure, and the impact resistance optimization method of the gas turbine impact environment model device is formed in cooperation with an impact test.

The invention relates to the technical field of test equipment design and manufacturing, in particular to an underwater vehicle head section product environment test clamp. The underwater vehicle head section product environment test clamp comprises a base and a mounting frame, the base comprises a bottom plate, side plates and reinforcing ribs, the bottom plate is fixedly connected with the side plates, and the reinforcing ribs are fixedly connected between the bottom plate and the side plates; the bottom plate is provided with a mounting hole used for being connected with a vibration test bed, an impact test bed or a constant acceleration test bed; the mounting frame comprises a base plate, a connecting plate and a rubber gasket, the base plate is provided with a mounting structure for mounting a product, the rubber gasket is arranged on the mounting surface of the base plate, and the connecting plate is fixedly connected with the base plate; wherein the mounting frame is detachably and fixedly connected with the side plates of the base through the connecting plates.

The application discloses a new energy automobile powder metallurgy transmission shaft torsion impact test bench, which comprises a bottom plate, a rack, a traction mechanism, an impact hammer and a torque testing device, the traction mechanism is fixedly installed on the bottom plate and the rack, the impact hammer is slidably arranged in the interior of the rack, and the torque testing device is fixedly connected to the right side of the top of the bottom plate, and the application relates to the technical field of mechanical property testing. The new energy automobile powder metallurgy transmission shaft torsion impact test bench connects the pull rope and the impact hammer by the mode that the clamping block clamps the hook block, so that the pull rope and the impact hammer can be quickly separated, and then the impact hammer is not affected by the resistance of the motor output shaft rotation when falling, the impact force of the impact hammer is easier to measure, errors are not prone to occur, and the clamping block is matched with the triangular block, the pull rope pulls the impact hammer to the top, the triangular block pushes the clamping block to the two sides after pushing away the clamping block, and the release of the impact hammer can be automatically realized, and an electric grabbing release structure is not needed, so that the cost is low.

The utility model discloses a feeding device based on a rotary swing type impact sample, and belongs to the technical field of impact test auxiliary equipment. The feeding device comprises a first support, a second support, a third support, a fourth support, a fifth support, two sixth supports, two linear bearings, a bottom plate, two rotating rods, two rolling bearings, eight first screws and twenty second screws. The device can realize the purpose of feeding a plurality of impact samples one by one, and has the characteristics of low manufacturing cost, simplicity in operation and good use effect.

The application provides a triaxial six-direction impact test simulation method and system based on F-DEM, the triaxial six-direction impact test simulation method based on F-DEM comprises a full-size model frame establishing step, an F-DEM coupling step, a model dynamic solving step and an automatic data post-processing step, and the application also provides a triaxial six-direction impact test simulation system based on F-DEM, a three-dimensional full-scale numerical model is established based on the basic parameters of a waveguide rod and a rock sample in a TEHB test system, and the three-dimensional full-scale numerical model comprises a discrete element rock sample model and a finite element waveguide rod model. The application realizes efficient coupling modeling of the finite element waveguide rod and the discrete element rock sample, has good stress wave propagation accuracy, can accurately simulate the dynamic response behavior of the rock sample under triaxial six-direction loading, and provides efficient and verifiable technical support for impact response analysis and engineering application research of rock mass in a complex stress environment.

This invention relates to a waveform generation device and method for simulating landing impact. The device includes a base plate with a test frame mounted on it. An electromagnetic release hook and a laser displacement sensor are mounted on the top of the test frame. A housing is mounted on the top of the base plate, with a first inflation port at the bottom of the housing connected to an inflation solenoid valve. A rupture diaphragm or a sealing bottom cover is mounted on the bottom of the housing. A pressure sensor is housed inside the housing, with a sealing top cover at its top. A piston rod is slidably fitted onto the sealing top cover. A piston is located inside the housing and slidably fitted onto the inner wall of the housing at the bottom of the piston rod. A collision buffer layer abuts against an impact platform at the top of the piston rod. An overload sensor is mounted on the impact platform and slidably fitted onto the test frame. A support platform, flush with the lowest point of the impact platform's descent, is also mounted on the top of the base plate. The electromagnetic release hook, laser displacement sensor, inflation solenoid valve, pressure sensor, and overload sensor are all communicatively connected to a timing control system. This invention enables simulated landing impact tests on large-mass test products.

The invention belongs to the technical field of pendulum bob tests, and particularly relates to a pendulum bob type lateral impact test device capable of adjusting the impact direction in multiple degrees of freedom, which comprises a base, a mechanical arm mounted on the base, a small arm fixedly mounted at the movable end of the mechanical arm, and a U-shaped frame fixedly arranged at the other end of the small arm, a U-shaped frame is arranged on the upper portion of the arc-shaped track, a chain wheel is rotationally installed in the U-shaped frame, a chain is connected to the chain wheel in a meshed mode, the lower end of the chain is fixedly connected with a pendulum bob, the other end of the chain is wound on a roller of a first winch, and the first winch is fixedly installed on the small arm. The azimuth angle and the pitch angle of the pendulum bob can be quickly and accurately adjusted, so that the pendulum bob can realize repeatable impact loading under different incident angles, different transverse offsets and different spatial orientations, and the target energy level hit rate and the test repeatability are remarkably improved.

The application relates to the technical field of safety helmets, in particular to an impact device for safety helmet testing, which aims to solve the problem that it is inconvenient to switch the impact head during testing, and comprises a base, two vertical plates fixedly installed on the upper surface of the base, a sliding rod fixedly installed on the upper surface of the base, a folding assembly arranged above the base, an impact assembly arranged above the base, and a positioning assembly arranged outside the impact assembly. Through cooperation of a motor, a rotating wheel and a steel wire rope, the impact assembly can move downwards, the impact head can move downwards, the safety helmet can be impacted, the clamping ring can be rotated through the spring, the arc-shaped plate and the positioning block, the clamping ring can drive the rotating shaft and the triangular plate to rotate, the triangular plate can drive the pressure sensor, the conical head, the circular head and the square head to switch, so that the device can simulate different falling objects when the safety helmet is tested, and the precision of the safety helmet impact test is improved.

The application belongs to the technical field of sensors and particularly relates to a water jet impact sensor and a use method thereof. An LED lamp indication area is arranged on a target plate surface, a pressure sensing unit with a fence type grid node is adopted, cylindrical weights with different masses and different round bottom areas are used to drop and impact the target plate from different heights, the water jet impact target plate is simulated under different pressures, the node pressure information, the node response coordinates and the drop height data of the drop from different heights are used as training data input values, the impact pressure is theoretically calculated, the theoretical calculation impact area is used as an output value, a multi-objective fast non-dominant sorting genetic algorithm model is trained, a database is established for predicting the jet area and the effective jet pressure mean value generated by the impact, prediction values are provided for water jet impact tests at different distances, wavelet threshold processing data in a real test process is checked, and the impact area and the impact pressure mean value in different areas are given.

The application belongs to the technical field of safety belt impact test, and particularly relates to a test device for safety belt detection and a use method thereof, which comprises a double-track accelerating assembly, a telescopic impact assembly, a speed adjusting assembly, a rotary driving assembly, an impact limiting assembly, an impact resetting assembly and a track mounting frame, the double-track accelerating assembly is arranged on the track mounting frame, and the telescopic impact assembly is arranged on the rotary driving assembly. The application proposes an accelerating scheme of extruding an annular track, and prolongs the accelerating path of the load through a circulating track; in order to simplify the mechanism of triggering the impact, the application does not use a sensor to monitor the speed or kinetic energy, and does not design a gear shifting motor, but controls the track switching of the load through the centrifugal force affected by the speed, and when the kinetic energy is accumulated to a certain degree, the load is automatically moved outward to impact the seat and simulate the working condition.