24 results about "Shock testing" patented technology

Systems and methods are directed toward low temperature testing of motion, vibration, or force responses of test fixtures. For cryogenic shock testing, a test object can be secured on a test apparatus, such as a test fixture of a shock table. An elongated enclosure, such as a flexible tube, can be connected between the test fixture and a laser vibrometer, positioned orthogonal to a surface normal at a test region of the test fixture to enable light emitted by the vibrometer to be reflected from the test region back to the vibrometer. A flow of purge gas can be introduced into the tube, proximate the test fixture, to direct moisture away from the test fixture. The flow can prevent condensation or ice from forming on the surface of the test fixture at the cryogenic temperature. A shock event can be simulated, and the response of the test region measured by the laser vibrometer. The impact of the shock event on the test object can then be observed.

The invention discloses a half-sine impact waveform generator design method based on a bidirectional progressive structure, and relates to the technical field of impact waveform generators and impact tests.The half-sine impact waveform generator design method comprises the following steps that an initial unit cell structure is selected, and topological optimization is conducted on the initial unit cell structure through a bidirectional progressive structure optimization method; and according to the optimized unit cell structure, assembling the semi-sine shock waveform generator by using a genetic algorithm. The design method capable of shortening the model selection time of the half-sinusoidal waveform generator and improving the test efficiency is adopted, the waveform generator capable of generating specific impact response is designed, and the pulse width and the peak value can be adjusted within a larger range.

The present application relates to the field of impact test technology, and in particular to a mechanical impact test method, device, electronic device, and storage medium. The method includes: analyzing the acquired impact test result information to determine the impact test abnormal result information, where the impact test result information is the test result information summarized after the tests of multiple test objects in the same batch are completed; judging whether the impact test abnormal result information falls within a preset first test abnormal deviation range; if not, obtaining the first impact test information corresponding to the impact test abnormal result information and the second impact test information corresponding to other test objects in the same batch; determining the test compensation information corresponding to the impact test abnormal result information based on the first impact test information and the second impact test information, and correcting the impact test abnormal result information based on the test compensation information. The present application has the effect of improving the accuracy of mechanical impact testing.

1. The name of the design product: cold and hot impact testing machine (double head). 2. The use of the design product: the design product is used for cold and hot impact test of products. 3. The design points of the design product: in shape. 4. The picture or photo that best indicates the design points: perspective view.

The invention particularly relates to an anti-seismic test device and a test method thereof. The anti-seismic test device comprises a test base, a support frame, a simulated vibration test mechanism, a laminated slab mounting assembly and a vertical push-pull mechanism, a test piece comprises a laminated slab and a bracket which are fixedly connected, the test base comprises a base and a reaction wall, and the support frame comprises a reaction support beam fixedly connected with the reaction wall. The simulation vibration test mechanism comprises a clamping assembly, a vertical jack, a connecting plate and an actuator, the clamping assembly comprises a plurality of clamping units, each clamping unit comprises two clamping pieces, the two clamping pieces abut against the two side faces of the bracket respectively, and the two clamping pieces are fixedly connected; the vertical jack is fixedly connected with the counter-force supporting beam; the actuator is connected with the reaction wall; the movable end of the actuator is detachably and fixedly connected with the connecting plate, and the connecting plate is fixedly connected with all the clamping pieces on one side. The laminated slab mounting assembly comprises two mounting units, and each mounting unit comprises a gusset component abutting against the side face of the laminated slab.

The invention discloses a hot corrosion environment and fuel gas impact coupling test device, and belongs to the technical field of fuel gas impact tests. The device comprises a high-speed rotating mechanism, and a fuel gas injector and a piezoelectric atomization injector which are arranged on one side of the high-speed rotating mechanism, the device further comprises a central control system which is used for controlling the high-speed rotating mechanism, the fuel gas ejector and the piezoelectric atomization ejector to work cooperatively. According to the invention, through an oxygen-fuel oil proportion dynamic adjustment technology, cold / hot fuel gas alternate injection is realized, blade cold / hot boundary conditions are accurately simulated, and a high-fidelity and high-stability standardized experiment platform is provided for material failure mechanism research, life prediction and reliability design of aero-engine turbine blades.

The present invention belongs to the technical field of batteries, and particularly relates to an instrument and method for evaluating the expansion of a battery pack, which includes the following steps: Step 1, place the gas probe of the miniaturized gas pressure and temperature sensor into the internal gas cavity of the battery pack and connect it to an external gas pressure and temperature recorder; Step 2, obtain the pressure and temperature of the gas in the voids inside the battery pack and the single battery cells through the gas pressure and temperature sensor, and use the gas pressure and temperature recorder to collect and store the changes in gas pressure and temperature; Step 3, construct a multi-environment coupling test system, including a charge and discharge module, a temperature control box, a vibration table, and a shock testing machine; Step 4, establish a pressure-temperature-deformation coupling model and separate the environmental interference signals based on wavelet transform. The present invention can accurately collect the changes in the internal cavity pressure and temperature of the battery pack under various environments, and use the changes in pressure and temperature to obtain the battery expansion characteristics, so as to give early warning and protection to the state of the battery pack.

The utility model discloses a shock filtering testing device, which comprises a base (1), at least one mounting seat (2) is arranged on the base (1), a shock absorbing and buffering assembly is connected between the mounting seat (2) and the base (1), a flexible positioning block (3) is embedded in the mounting seat (2), a mounting groove (301) for placing a product is arranged in the flexible positioning block (3), the mounting seat (2) is further connected with a power supply connecting wire (4), and the power supply connecting wire (4) is connected with the base (1). A trigger mechanism is arranged on one side of the mounting base (2), a mobile detection mechanism is further arranged on the other side of the mounting base (2), the mobile detection mechanism comprises a mobile platform (6), and detection assemblies in one-to-one correspondence with the mounting base (2) are arranged on the mobile platform (6). According to the scheme, the damping and buffering assembly and the base (1) form an elastic decoupling system, so that cross interference during multi-station testing is eliminated, meanwhile, the buffering performance is improved through the flexible positioning block (3), and product damage is avoided.

The invention relates to the technical field of electric vehicle shock absorber testing, and particularly discloses a front fork shock absorption testing device which comprises a rotating mechanism, a rotating table is arranged on the rotating mechanism, the rotating mechanism is used for driving the rotating table to rotate, a first lifting groove is formed in the rotating table, and a first screw rotationally connected with the rotating table is arranged in the first lifting groove; a disc in threaded connection with the first screw is arranged in the first lifting groove, a plurality of conical openings are formed in the disc, second lifting grooves are formed in the positions, corresponding to the conical openings, of the rotary table, and slidable conical blocks are arranged in the second lifting grooves. A lifting mechanism used for driving each conical block to ascend and descend in the corresponding second lifting groove is arranged below the corresponding conical block, a fixing mechanism is arranged on one side of the rotary table and used for fixing a front fork damper, and tires capable of making contact with the discs or the conical blocks are installed on the front fork dampers. The technical problem that an existing damping testing device cannot effectively simulate real and complex road surface working conditions due to the single excitation form is solved.

This invention discloses a temperature shock test chamber for electrical and electronic products, relating to the technical field of temperature shock testing equipment. Addressing the problem of poor isolation between the high and low temperature chambers in existing temperature shock test chambers, the following solution is proposed: a test chamber body with an experimental cavity on its inner wall, the inner wall of which has two air ducts; a basket located inside the experimental cavity, with two symmetrical sealing plates fixedly connected to its exterior; and an isolation frame located inside the experimental cavity, with a crossbeam on its exterior. This invention ensures effective isolation between the high and low temperature chambers during use, significantly reducing cross-current during basket switching between the two chambers, lowering the energy consumption of the temperature control system, improving temperature control accuracy, and enhancing the precision of test results.

This invention relates to the field of material performance testing technology and discloses a radar temperature shock testing device, including a temperature shock testing chamber and a testing cavity formed on the side of the chamber. The chamber is used for testing the physical and electrical properties of radar materials and components under temperature shock. An air outlet is provided on the inner side of the testing cavity, and an air guide assembly is provided on the inner wall to prevent high and low temperature airflows from directly blowing onto the radar under test. In this invention, a portion of the airflow enters the exhaust hood through the connecting shell, driving the fan blades to rotate and then being evenly discharged from three exhaust hoods in multiple directions. Another portion of the airflow causes the air guide cloths of different lengths to oscillate irregularly, further dispersing the airflow. This dual airflow guidance avoids the direct and forceful blowing of high and low temperature airflows onto the radar components, eliminating the influence of airflow interference on material performance testing, ensuring the authenticity and repeatability of sample test data under temperature shock, and is suitable for the testing and analysis of the thermal stability, fatigue characteristics, and electrical properties of radar materials.

The invention discloses a shock absorption performance testing device for a shock absorber, and belongs to the technical field of shock absorption testing, the shock absorption performance testing device comprises a testing mechanism used for testing the shock resistance and shock resistance of the shock absorber, and the testing mechanism is provided with a mounting mechanism used for mounting the shock absorber and a recording mechanism used for recording the shock condition of the shock absorber; in a vibration test, continuous and irregular bumping excitation on a real road surface is simulated through irregular and staggered bulges on the vibration wheel, and in an impact test, an instant and high-energy impact load is simulated through cooperation of a semi-eccentric wheel and a strong spring. The two excitation modes can more truly reflect the mechanical environment faced by the shock absorber in actual use, in addition, the shock absorber is simulated into an actual installation state in a test, namely the bottom is jacked up, the top is fixed, and the stress form of the shock absorber is consistent with the working state, so that the effectiveness and the reliability of test data are ensured.

The utility model relates to the technical field of electronics and communication, in particular to an adjustable transmitter vibration impact testing device. The utility model provides an adjustable transmitter vibration impact test device which can automatically carry out vibration resistance and impact resistance tests on a transmitter, improve the test efficiency and improve the accuracy of test results. An adjustable transmitter vibration impact testing device comprises a base, sliding frames and the like, and the left portion and the right portion of the base are connected with the sliding frames in a sliding mode. According to the utility model, after the transmitter is clamped and fixed between the limiting blocks, the shaking frame is started to enable the limiting blocks to vibrate back and forth and carry out an anti-vibration test on the limiting blocks, or the second motor is started to enable the buffer frame to downwards carry out intermittent impact on the transmitter and carry out an anti-impact test on the limiting blocks; the effects of automatically carrying out anti-vibration and anti-impact tests on the transmitter, improving the test efficiency and improving the accuracy of the test result are achieved.

The utility model relates to the technical field of impact testing machine buffering, and provides an impact testing machine buffering assembly which is characterized in that a driving assembly is arranged on the outer side of a tower-shaped seat and is positioned on a side frame, and when an impact testing machine body is supported above a supporting plate, a frame plate can be driven by the driving assembly to ascend to the waist part of the impact testing machine body; then screwing handles are sequentially screwed to drive a middle rod to be pushed in a threaded pipe, at the moment, inserting rods located on the two sides of a yoke plate can be synchronously pushed in a socket until the screwing handles abut against the impact testing machine body, and third buffer springs in three directions are matched with second buffer springs to horizontally limit the impact testing machine body; meanwhile, when the impact testing machine body shakes horizontally, a second buffer spring and a third buffer spring which are in contact with the impact testing machine body can play a buffer role in the horizontal direction, and compared with a comparison file, the impact testing machine effectively prevents the impact testing machine body from toppling and rollover in the impact testing process.

The invention discloses an extra-high voltage insulator aging experiment device which mainly comprises an environment simulation bin and a matched environment simulation system, the environment simulation bin is provided with a test assembly and comprises a feeding and discharging mechanism, a conductive mechanism and an impact mechanism, the feeding and discharging mechanism is located at an inlet and an outlet in the bin, and a linearly moving bearing material table of the feeding and discharging mechanism is used for placing an insulator to be tested; the conductive mechanism is composed of two lifting modules which are provided with a high-voltage electrode and a grounding electrode respectively, the conductive mechanism is matched with the feeding and discharging mechanism through a linkage structure, when the insulator reaches a test position, the electrodes automatically make contact with hardware fittings at the two ends of the insulator, and the impact mechanism is used for conducting impact test on the insulator. According to the device, automatic feeding, electrical connection and mechanical shock testing of the insulator are realized through integrated design, and an efficient and controllable experimental environment is provided for aging performance evaluation of the extra-high voltage insulator.

This utility model relates to the field of temperature shock testing technology and discloses a multifunctional temperature shock test chamber with a protective structure. The chamber includes a main body, a lifting assembly fixedly connected to the top surface of the main body, and a basket fixedly connected to the bottom end of the lifting assembly. Several limiting strips are provided on both sides of the inner wall of the basket. This multifunctional temperature shock test chamber with a protective structure, through the arrangement of the basket, limiting strips, and placement assembly, allows for the placement of test samples according to their size on the placement rack during use. The adjusting rod is turned to fix the test sample in place by the limiting components, and the placement rack is inserted into the limiting strips to limit the position of the test sample. This prevents the sample from changing position or falling during multiple tests or comparisons of multiple samples under thermal shock, thus maintaining the stability of the sample.

The application discloses an impact test device based on electromagnetic loading. The device comprises a power supply system, an impact gun, a sensor data acquisition system and a clamp and bracket system. The impact gun converts the electric energy of the power supply system into electromagnetic force impact force to act on the to-be-impacted test piece fixed on the clamp and bracket system in the form of impact load. Before the test starts, the impact gun is in zero-distance contact with the to-be-impacted test piece, and the impact load is horizontally loaded in parallel to the ground. During the test, the sensor data acquisition system records the data of the impact force and deformation displacement of the test piece changing with time. After the test ends, the reaction force between the impact gun and the to-be-impacted test piece is consumed in the form of friction and temperature rise through the buffer system of the impact gun, so that the secondary impact on the to-be-impacted test piece is avoided. The energy storage capacitor and the charging voltage in the power supply system are variable. The application can solve the problems of complicated operation and single impact wave form of the current impact test equipment.

The utility model provides a kind of for the fixed clamp of electronic water pump impact test, including the base of installation on impact test platform, first fixed part and second fixed part for installing electronic water pump to be measured, the first fixed part is along longitudinal fixed on the base, the second fixed part is adjustably set on the first fixed part, and the second fixed part and the electronic water pump mounting surface on the first fixed part are perpendicular to each other.The utility model can realize present to electronic water pump all-around impact test, simple and compact structure, low manufacturing cost, low processing difficulty.

The present invention relates to the technical field of battery packs, and in particular to a method for assembling a battery pack, including: installing a plurality of battery modules on a base, fastening a connecting piece between the electrodes of adjacent battery modules using bolts, connecting a wiring harness to the battery modules and the BMS respectively, and performing performance debugging on the BMS; laying a cooling pipe around the battery modules, fixing a housing on the base using a buckle to complete the assembly of the battery pack, and sequentially performing electrical performance testing, safety performance testing, environmental adaptability testing, and vibration and shock testing on the battery pack; determining the stability of the battery pack assembly based on the average difference in the torques of adjacent bolts of the connecting piece; if the stability of the battery pack assembly does not meet the requirements, adjusting the fastening duration of the connecting piece; if the assembly reliability of the battery pack does not meet the requirements, adjusting the circulation rate of the coolant. The present invention improves the stability of the battery pack assembly.

A method and system for valve vibration and shock testing based on digital twins belong to the field of industrial equipment testing and evaluation technology. The method includes: First, deploying a multi-source sensor network to construct the physical entity layer for valve vibration and shock testing, acquiring and preprocessing various physical monitoring data, and constructing a digital twin layer. Second, based on the various physical monitoring data and the digital twin layer, real-time data assimilation with the physical test bench is achieved through parameter calibration and updating of the digital twin model. Finally, virtual vibration and shock testing is performed, and the global response and key component information of the physical entity are predicted and evaluated based on the test results, ultimately achieving interaction and performance prediction. The method for valve vibration and shock testing is implemented through a valve vibration and shock testing system. This invention can significantly improve fault diagnosis capabilities, early damage identification capabilities, and valve condition prediction and evaluation capabilities, overcoming the shortcomings of insufficient on-site monitoring information.

The utility model discloses a wire vibration test bench, and belongs to the technical field of wire harness test equipment. The device mainly comprises a test board; the at least two groups of fixing assemblies comprise two groups of connecting frames, and clamping joints are arranged on the connecting frames; the loading part comprises a ribbon, a hanging ring is fixedly mounted on the outer side of the ribbon, the center of the hanging ring is arranged in a penetrating manner, and a weight is hung on the hanging ring; the swing assembly is arranged between the two fixing assemblies and comprises a mounting plate, a rotating motor is fixedly mounted on the outer side of the mounting plate, a swing part is arranged at the output end of the rotating motor, a push plate is arranged in the swing part, and the push plate is suitable for being driven by the swing assembly to reciprocate between the two fixing assemblies. According to the wire vibration test bench, the load part is arranged, the test environment of the wire harnesses is increased, meanwhile, the swing assembly is arranged, the push plate can collide two sets of wire harnesses in a reciprocating mode at the same time, and the test efficiency of the device is improved.

The utility model discloses a mechanical shock testing device, which relates to mechanical shock testing and comprises a frame body, a placement box is fixedly arranged at the top of the frame body, a take-up roller is rotatably arranged in the placement box, a first pull rope is wound on the take-up roller, one end of the take-up roller is fixedly connected with the first pull rope, and the other end of the take-up roller is fixedly connected with the second pull rope. The other end of the first pull rope is fixedly connected with a metal ball, a rotating disc is movably arranged in the frame body, a driving assembly and a limiting assembly are fixedly arranged on one side of the containing box, and the driving assembly is connected with the take-up roller. According to the utility model, the first motor is started, the driving end of the first motor drives the take-up roller to rotate so that the first motor is closed when the metal ball reaches the to-be-tested height, and because the pawl abuts against one grid of the ratchet wheel, when the first motor stops and the driving end of the first motor is rotated anticlockwise due to inertia, the pawl and the ratchet wheel are clamped and cannot rotate; therefore, the problem of reverse rotation of the driving end of the first motor in the stop state of the first motor is prevented.

This utility model discloses a temperature shock testing system, including a first temperature chamber and a second temperature chamber arranged opposite to each other; a flatbed transport vehicle is placed between the first and second temperature chambers; a test specimen is placed on the flatbed transport vehicle; a second connecting ring and a first connecting ring are respectively set at the left and right ends of the flatbed transport vehicle; the first connecting ring is connected to one end of a first steel wire rope through a first steel wire rope wedge joint; the second connecting ring is connected to one end of a second steel wire rope through a second steel wire rope wedge joint; the other end of the first steel wire rope passes through a first pulley and a second pulley and then connects to a first electric winch; the other end of the second steel wire rope passes through a fourth pulley and a third pulley and then connects to a second electric winch; the left and right ends of the flatbed transport vehicle track are respectively placed inside the second and first temperature chambers; the flatbed transport vehicle is movably mounted on top of the flatbed transport vehicle track. This utility model can quickly and reliably achieve the position transfer of the product between different temperature chambers when conducting temperature shock tests on the product.

The present invention discloses a method for testing the reliability and security of multi-form password products. The password products to be tested are subjected to initial testing and multi-component item testing in a preset order. The initial testing includes: running testing, random number comparison detection, and security detection; the multi-component item testing includes: constant pressure high and low temperature testing, variable temperature testing, constant humidity and heat testing, low air pressure testing, shock testing, light testing, vibration testing, drop testing, and aging testing; if any one of the initial testing and multi-component item testing fails, the reliability and security detection of the password product fails; the beneficial effects achieved by the present invention are: applicable to various forms of password products, and can systematically detect the comprehensive detection of the operation correctness, performance stability, random number generation compliance, and product security of the password product, so as to overall form a detection method for the reliability of the password product, ensure the reliability and security of the password product, and ensure the network security and data security of the products and network information systems using the password product through this detection.