685 results about "Impact test" patented technology

The invention discloses a method for reducing an angle measurement error of a fiber-optic gyroscope under a launching load. The method comprises the following steps: establishing a full-gun finite element dynamic model; correcting dynamic model parameters based on the seat ring test acceleration data; establishing a fiber-optic gyroscope mounting platform angular acceleration response maximum pulse value and pulse width prediction model taking a firing angle as an input variable by adopting an approximate modeling technology, and predicting the fiber-optic gyroscope mounting platform angular acceleration response maximum pulse value and pulse width corresponding to firing data; establishing a three-axis fiber-optic gyroscope zero offset increment prediction model under a half-sine angular acceleration impact load by adopting an angular impact test platform calibration method, and predicting the fiber-optic gyroscope zero offset increment corresponding to the obtained maximum pulse value and pulse width; and compensating the zero offset error of the fiber-optic gyroscope according to a zero offset increment prediction result before emission. According to the invention, the angle measurement precision of the fiber-optic gyroscope in a launching impact environment is effectively improved.

The invention discloses an elevator performance detection method based on video analysis, and relates to the technical field of elevator detection.The method comprises the steps that elevator polyurethane buffer construction information is obtained, and multi-view-angle sensing equipment is configured; performing an impact test on the buffer, and collecting synchronous test video data; multi-dimensional characteristic values such as deformation, stress strain and dynamic response are extracted based on characteristic engineering; in combination with pre-marked test data, constructing a machine learning judgment model taking the three types of features as input; and inputting the characteristic values to the model to realize automatic and accurate judgment on the quality condition of the buffer, and outputting a detection result containing physical performance and qualification judgment. The technical effects of improving the inspection accuracy, enhancing the inspection precision and improving the inspection efficiency are achieved by constructing a set of complete inspection process from video acquisition, preprocessing, feature value extraction, judgment, result output and report generation.

The invention provides a three-axis six-direction impact test simulation method and system based on an F-DEM, and the method comprises the steps: building a full-size model frame, coupling the F-DEM, carrying out the dynamic solving of a model, and carrying out the post-processing of automatic data. The invention further provides a triaxial six-direction impact test simulation system based on the F-DEM, a three-dimensional full-scale numerical model is established based on 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. According to the method, efficient coupling modeling of the finite element waveguide rod and the discrete element rock sample is achieved, the method has good stress wave propagation precision, the dynamic response behavior of the rock sample under triaxial six-direction loading can be accurately simulated, and efficient and verifiable technical support is provided for impact response analysis and engineering application research of the rock mass in a complex stress environment.

The invention provides a bird body collecting device for engine bird impact test speed calibration, which comprises a mounting bottom plate and a buffer collector, and is characterized in that the collector comprises a collecting guide pipe, and the guide pipe comprises a vertical section, a bent section and a horizontal section which are communicated in sequence; a buffer assembly is arranged at the bottom of the vertical section and fixed to the bottom plate, and a bird body divider is arranged at an opening of the horizontal section. The front cabin is fixedly connected with the opening of the horizontal section, a speed monitor and an electromagnetic switch device are arranged in the front cabin, an anti-splashing cabin door is arranged at the inlet end of the front cabin, the electromagnetic switch device is connected with the anti-splashing cabin door, and the speed monitor is used for monitoring the flight speed of a bird body and is connected with the electromagnetic switch device; when the speed signal is monitored, the electromagnetic switch device is triggered to control the anti-splashing cabin door to be closed. The device has the advantages of miniaturization, automation, good buffering effect, easiness in operation and the like, and solves the problems of large bird impact, difficulty in residue collection and the like during bird speed calibration.

The invention discloses a method for completing a battery pack bottom test based on a linear motor ejection impact ball head, and the method comprises the steps: placing a to-be-tested battery pack on a battery pack bottom ball strike test bench, and enabling a power device of a bottom impact test device to drive the impact ball head of the battery pack bottom ball strike test to impact the battery pack from the bottom of the to-be-tested battery pack; the power device is a linear motor, the impact ball head is installed at the head of the linear motor, the impact ball head is driven by the linear motor, the battery pack is impacted from the bottom of the battery pack according to the impact force and the impact mode required by the bottom ball strike test of the battery pack, and the bottom ball strike test of the battery pack to be tested is carried out. According to the invention, an impact ball head driving mode of a battery pack bottom ball impact test is changed into a linear motor driving mode so as to determine the speed and the energy impact direction designated position, and compared with the existing spring, pneumatic and other emission modes in the industry, the energy control precision is higher, the repeatability is good, the adjustment and control are convenient, and the operation is simple.

The invention belongs to the technical field of optical glass, and discloses an impact test device for manufacturing optical glass, which comprises a bearing platform, a guide assembly mounted on the bearing platform, a support assembly arranged on the guide assembly, and an impact test assembly arranged on the support assembly, the protection assembly is mounted on the supporting assembly; a steel ball vertically falls to impact optical glass, two supporting assemblies are pushed to move oppositely in the falling process, a movable frame moves to the vertical end along a guide groove through a connecting piece, and at the moment, the movable frame and a supporting roller rod move oppositely along the lower end of the guide groove under the action of a second tension spring; the distance between the two supporting roller rods is shortened by rotating the two supporting roller rods, the two supporting roller rods move downwards and the distance between the two supporting roller rods is shortened in the rebounding process of the steel ball, the steel ball is supported through the two supporting roller rods, the situation that the steel ball rebounds and secondarily impacts optical glass is avoided, and therefore the accuracy of the optical glass impact test is guaranteed.

The utility model provides an automobile part impact test device, which comprises a base arranged right below a drop hammer, a plurality of uniformly arranged screw rods are arranged on the upper surface of the base, a plurality of vertical plates are sleeved on the screw rods, limiting nuts are arranged on two sides of a through hole along the length direction of the screw rods, the limiting nuts are in threaded connection with the screw rods, and the vertical plates are arranged on the vertical plates. A guide rail strip perpendicular to the screw rod is installed at the upper end of the vertical plate, a sliding block is installed in the guide rail strip in a sliding mode, a supporting column is installed on the upper surface of the sliding block, L-shaped plates are installed on the lower portions of the two parallel side faces of the supporting column, and a height-adjustable connecting piece used for being connected with automobile parts is installed on the supporting column. The beneficial effects of the utility model are that the positioning point can be adjusted according to the position of the part used for installing the connecting screw on the automobile part, the limiting device is suitable for the limiting requirements of different automobile parts in the impact test, and the application range is expanded.

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 relates to the technical field of spacecraft ground test equipment, in particular to a launching device for a spacecraft landing impact test based on push rod linkage, and is characterized in that one end of a sling is connected with a lower hanging ring, the lower hanging ring is arranged at the bottom of a shell, a driving mechanism is mounted in an upper cavity, and a releasing mechanism is mounted in a lower cavity; the output end of the driving mechanism penetrates through the partition plate to be in transmission connection with the releasing mechanism, the positioning disc is clamped to the bottom of the releasing mechanism, the spacecraft is connected to the bottom of the positioning disc, the lower hanging ring is hinged to the positioning disc, the upper hanging ring is installed on the top of the shell, and the other end of the hanging belt is connected with the upper hanging ring. The releasing operation is more convenient, it is ensured that the releasing device can be repeatedly used, meanwhile, the symmetrical structural design is adopted, the mass center is arranged in the center of the shell, and the unstable conditions such as overturning, shaking or rotating in the releasing process of the spacecraft are avoided.

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 invention belongs to the field of wheel road tests and bench tests, and particularly relates to a wheel bench impact test method and system equivalent to test field road impact. The method comprises the following steps: determining a road impact condition of a vehicle for road test; the road impact working condition is reproduced; in the reproduced road impact working condition, simulation prediction of rack impact test energy is carried out; and generating a bench impact test scheme based on a simulation prediction result. Compared with a traditional road test, the method has the same test effect, the test period can be greatly shortened, test resources and cost are saved, potential risks of the wheel road test are found in advance, and a necessary rapid test verification means is provided for wheel design and verification. The assessment of the road test on the wheel is equivalent to the bench test, the reliability of the road test on the wheel is verified before the whole vehicle road test, the risk of failure of the wheel in the whole vehicle road test stage is reduced, and the method is wide in application range, simple, reliable and low in cost.

The utility model belongs to the technical field of test devices, and particularly relates to a detachable vibration impact test clamp which comprises a bottom plate, a pair of side edge supporting plates are symmetrically arranged on the two sides of the bottom plate, a lifting plate is detachably arranged above the side edge supporting plates, a lifting column and a positioner are arranged on the bottom face of the lifting plate, and the lifting column and the positioner are arranged on the bottom face of the lifting plate. Hoisting holes are formed in the lower ends of the hoisting columns, and the bottom plate is fixed to a vibration test bed through fasteners. The test fixture provided by the utility model not only can simulate the actual installation state of the casing, but also is convenient to install and operate.

The invention discloses a battery pack fire simulation test device, and relates to the technical field of test devices. The positioning part is arranged in the test bed and is used for fixing a battery pack to be tested; the mechanism simulation component is used for simulating the condition of external impact on the battery pack; the loading component is used for storing potential energy for the mechanism simulation component; the water tank is filled with water and is used for extinguishing the on-fire battery pack after the test is completed; and a release member. The mechanism simulation component is arranged to impact the battery pack, so that the bottom impact test requirement newly added in the new national standard is met, the specific implementation of the test is not beneficial to direct driving of a hydraulic system, and under the condition that the battery pack is fixed by the positioning component, the loading component is firstly utilized to store energy for the mechanism simulation component; and when the double-shaft moving module sends the mechanism simulation part to an impact position, potential energy is released for impact, the spring structure has higher corrosion resistance, and meanwhile, the maintenance cost is reduced.

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 invention relates to an FIB sample for characterizing a fracture characteristic area of a steel sample by adopting TEM and TKD and a preparation method of the FIB sample. The method comprises the following steps: obtaining the steel sample containing fracture characteristics through an impact test; observing the surface morphology of the fracture in the FIB, finding out an interested fracture morphology feature region, and marking with an ion beam; packaging a marked range and an area containing a target position; cutting the sample in the direction parallel to the marking position, dividing the sample into two parts, and grinding and polishing the formed cutting surface to the target position; the target position is observed from the side face of the fracture in FIB, the target position is plated with a protective layer, ion cutting and thinning are conducted, and then the sample for TEM and TKD observation is obtained. The TEM and TKD characterization sample with the fracture specific area is prepared through the method, and deep analysis of sample fracture characteristics and fracture mechanisms is facilitated.

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.

This invention relates to the field of water droplet impact experiment technology, and particularly to a method, apparatus, and impact experiment method / system for forming large supercooled and supercooled water droplets. The method for forming large supercooled and supercooled water droplets includes: forming large water droplets; controlling the large water droplets to be in a suspended state; lowering the temperature of the large water droplets; and obtaining a first temperature of the large water droplets, wherein a large supercooled and supercooled water droplet is considered to be a large supercooled and supercooled water droplet when the first temperature is less than -10°C. The impact experiment method for large supercooled and supercooled water droplets includes: forming supercooled water droplets according to the method; controlling the free fall of the supercooled water droplets to impact a substrate; obtaining images of the dynamic phenomena of the supercooled water droplets impacting the substrate; and obtaining the mathematical model required for the experiment based on the images. This invention can achieve accurate and efficient control of the temperature of the supercooled water droplets, while accurately observing the phase transformation and nucleation phenomena during the impact experiment, facilitating the more realistic formation of the mathematical model required for the experiment.

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 invention provides a vertical double-wave impact test bench. Comprising a bottom plate, a supporting table arranged above the bottom plate and provided with an impact window, a moving table top connected to the upper portion of the supporting table, an impact air cylinder arranged on the bottom plate and vertically arranged, a negative wave generator connected with the moving table top and located below the supporting table, and a positive wave generator connected to the impact air cylinder and located below the impact window. The negative wave generator and the supporting table are arranged in a spaced mode, the spacing distance is adjustable, a cylinder body of the speed adjusting air cylinder is connected with the supporting table, the end of an air cylinder rod is connected with the moving table top, and when the impact air cylinder acts, the positive wave generator moves upwards to impact the bottom of the moving table top; the negative wave generator is driven to move upwards to impact the bottom of the supporting table to generate negative pulse waves, so that the positive waveform and the negative waveform do not coincide on a time axis, and the waveforms are ensured to be accurate and reliable; and the force of the next shock wave can be adjusted to meet the test requirements.

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 utility model relates to metal detection sample processing equipment technical field, concretely is a kind of metal plate impact sample special machining center machine tool, it includes: workbench, processing assembly and clamping tooling.The utility model, through the cooperation of lifting oil cylinder and action oil cylinder, the collaborative action of clamping tooling and broach can be realized: when lifting, clamping tooling automatically retreats, and it is automatically reset and tightens sample when falling, can avoid hitting knife;When action oil cylinder drives clamping tooling to move, it will first drive clamping block to move, to realize the clamping and release of sample, cooperate the action of lifting oil cylinder, the automatic clamping and automatic material of sample can be completed in the process of lifting and falling, reduce the processing step, save processing time.

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 embodiment of the utility model provides an impact test composite tool which comprises a calibration device and a sample device. A sample piece mounting surface is arranged at the top of a calibration block, and a V-shaped groove is formed in the bottom of the calibration block; the sharp corner part of the V-shaped groove faces the top of the calibration block; the two anvil block abutting pieces are installed on the side face of the calibration block and symmetrically distributed with the center line of the V-shaped groove as the symmetry axis. When calibration is carried out, the posture is adjusted to enable the V-shaped groove to be horizontally arranged, then the anvil block is adjusted to enable the anvil block to abut against the abutting piece to complete calibration, and adjustment after measurement is not needed. When a sample test is carried out, the impact sample piece is connected with the calibration block through the sample piece mounting surface, so that the V-shaped groove is vertically formed, the calibration block after calibration and centering is adopted for fixing the impact sample piece, the calibration block is directly propped against the anvil block again, centering adjustment is not needed, the adjustment time is shortened, and the test efficiency is improved. The calibration block can be repeatedly used under different working conditions and is suitable for different sample pieces, and the efficiency is improved.

The invention relates to a drop hammer impact equivalent test device capable of reproducing an ultra-high-speed chipping damage effect. The problem that a low-cost test device for chipping damage effect and protection technology research is lacked at present is solved. Comprising an impact test platform, an overall frame, a guide rail, a multifunctional drop hammer, a heating device, a hammer grabbing and disengaging device and a lifting device, the overall frame is fixed to the impact test platform, the guide rail is vertically installed on the overall frame, the lifting device is installed on the top of the overall frame, and the multifunctional drop hammer is detachably connected to the lower portion of the lifting device and matched with the guide rail. The heating device is mounted on the multifunctional drop hammer, the multifunctional drop hammer is provided with a positive impact test hammer head and an inclined impact test hammer head, the slide rail sample is fixed on the impact test platform during a positive impact test, and the slide rail sample is obliquely fixed between the impact test platform and the integral frame during an inclined impact test. According to the method, the chipping damage effect can be effectively reproduced, and the method has important engineering value for material damage mechanism and protection technology research.

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.