907results about "Shock testing" patented technology

The utility model discloses intelligent mowing robot test equipment, which comprises a workbench, a button test assembly, two sets of collision test assemblies and a three-axis electrical parameter module, the workbench is provided with a test base, a mowing robot is placed on the test base, the button test assembly is arranged on one side of the test base, and the two sets of collision test assemblies are connected with the three-axis electrical parameter module. The collision testing assemblies are arranged at the front end and the rear end of the testing base respectively, the three-axis electrical parameter module is arranged on the testing base, the button testing assembly is used for testing whether a button of the mowing robot can be normally started or not, and the collision testing assemblies are used for testing the collision function of the mowing robot. The three-axis electrical parameter module is used for testing information of a wheel set and a cutter head of the mowing robot. According to the scheme, the mowing robot is tested in sequence through the button testing assembly, the two collision testing assemblies and the three-axis electrical parameter module, so that the testing efficiency of the mowing robot is effectively improved, and the testing process of the mowing robot is simplified.

The invention provides a bumper assembly low-speed collision test system and method, and the system comprises a mobile barrier trolley, a universal rapid installation clamp, a multi-sensor integrated measurement module, and a data collection and processing system, and can adapt to different bumper assemblies to be tested through the universal rapid installation clamp, simulates the real collision process, and improves the test precision. In the process that the traction system drives the movable barrier trolley to move along the track to conduct the collision test, the multi-sensor integrated measurement module can collect collision data and draw a data curve, and the accuracy of the collision test result is improved. And then the data acquisition and processing system scores the maintenance economy, the energy absorption efficiency, the passenger protectiveness and the structural integrity according to the collision data and the data curve, grades the collision test result according to the scoring result, and finally can output a depth test report containing rating and improvement suggestions. The method is used for supporting and improving the design and optimization capability of the bumper assembly.

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 present application relates to the technical field of wheel hub detection, and discloses a wheel hub bearing device and an impact testing machine, the rotation of the first angle adjusting plate is controlled by the hydraulic cylinder, the angle is adjusted with the rotating column as the shaft, the arc-shaped seat and the concave arc surface of the bearing table always keep the state of close contact, which ensures that the impact force generated by the drop hammer mechanism impacting the wheel hub is offset by the bearing table at any angle of the first angle adjusting plate within the preset range, so that the angle control of the first angle adjusting plate will not produce adjustment error due to multiple impact tests, and the bearing table effectively offsets the impact force of the drop hammer mechanism by lifting the arc-shaped seat, avoiding loosening of the triangular structure due to frequent impact. The existing bearing device of the wheel hub outer edge inclined impact testing machine is prone to loosening of the triangular structure composed of the bottom plate, the angle adjusting plate and the hydraulic cylinder during frequent impact tests, which leads to the decline of the inclination angle adjustment precision of the angle adjusting plate and the failure of the hydraulic cylinder, affecting the accuracy of the test and the reliability of the equipment.

The invention discloses a non-contact measurement system and method for full-field deformation of a fuselage in an airplane crash test, and belongs to the technical field of airplane structure strength testing, and the method comprises the steps: making a high-quality speckle pattern on the surface of the fuselage, and laying cooperation mark points; a binocular camera flexible self-calibration method is used for completing calibration of the stereo measurement system; unification of global coordinates of multiple systems is assisted through unmanned aerial vehicle photogrammetry; a synchronous controller is adopted to trigger multiple sets of systems to synchronously collect images in the falling and collision process; obtaining the motion trail and speed of the key measuring point based on a mark point positioning tracking and stereoscopic vision principle; acquiring a full-field three-dimensional displacement field and a strain field based on a digital image correlation method guided by a control point and a stereoscopic vision principle; and deformation visualization representation is realized through image splicing and data fusion. According to the invention, non-contact, high-precision and full-field dynamic measurement of the three-dimensional deformation field in the falling and collision process of the whole large aircraft is realized, and technical support is provided for analysis and evaluation of falling adaptability of the aircraft structure and verification of anti-falling and anti-collision design.

An apparatus for testing a bottom protective board of a battery pack includes a base and a testing mechanism.SOLUTION: The base 100 is configured to support the bottom protective plate 300, the base 100 is provided with a measurement groove, a pressure sensor and a plastic deformation member are provided in the measurement groove, the base 100 is provided with a spacer block, and the bottom protective plate 300 and the base 100 are spaced apart by the spacer block to form an impact chamber; The test groove is located in the impact chamber, the test mechanism 200 includes a test stand 210 and an impact component 220, the test stand 210 and the impact component 220 are disposed on one side of the base 100, and the impact component 220 is suspended on the test stand 210 and located right above the base 100.SELECTED DRAWING: Figure 1

The invention belongs to the technical field of vehicle tests, particularly relates to a damping durability detection device for a plug-in hybrid drive vehicle, and aims to solve the problems that a detection device can only simulate vertical jolt, is single in test working condition and is seriously inconsistent with complex multi-dimensional loads in actual driving, results are distorted, dampers need to be disassembled and assembled repeatedly during batch detection, and the test efficiency is low. In order to solve the problem of low efficiency, the invention provides the following scheme: a test tool cabinet is provided. The device for detecting the damping durability of the plug-in hybrid drive vehicle has the advantages that a combined load under a real road condition can be simulated through the multi-dimensional impact module, vertical impact can be performed, and intermittent impact in deflection, inclination and horizontal directions can also be realized; according to the utility model, complex working conditions of a vehicle during bumping, turning or lateral stress are comprehensively restored, and the module supports one-key rapid clamping and dismounting, is suitable for batch continuous detection of different types of shock absorbers, and remarkably improves the test efficiency and the result reliability.

The invention provides a new energy automobile power lithium battery performance detection method and system, and relates to the technical field of lithium battery detection.The method comprises the steps that physical impact and voltage change data of a lithium battery during a new energy automobile collision test are obtained, and a potential damage area is predicted through simulation analysis; releasing a special marker in the area, and identifying the position of the marker by a detection part to determine the actual damage position in the battery; then, an electrochemical model is constructed by combining the potential damage area and the actual damage position, so that the electrical characteristics of the damage position are represented; and finally, through a low-current charging and discharging test, current activity and electric field abnormal change of a damage position are calculated based on the model, a battery overheating runaway risk assessment result is generated, and damage positioning after lithium battery collision and accurate assessment of the overheating runaway risk can be realized.

The present invention concerns an apparatus (100) for non-destructive inspection of structural elements (10) having a wing profile, comprising a base (20), a positioning module (300) associated with the base (20) in correspondence with its own first end portion (310) and a detection module (400) associated with a second end portion (320) of the positioning module (300) and comprising a support frame to which at least one impulse hammer (43) and at least one first microphone (44') of the piezoelectric type are connected. The support frame comprises at least a first arm (41) to which a first regulation unit (45) is associated, adapted to support the impulse hammer (43) and to regulate a movement thereof along the first arm (41) itself and a second arm (42) to which a second regulation unit (46) is associated, adapted to support the first microphone (44') and to regulate a movement thereof along the second arm (42) itself. The first arm (41) and the second arm (42) are arranged facing each other and spaced apart, so as to define a working volume suitable for accommodating a structural element (10) having a wing profile, said first arm (41) and second arm (42) being connected to each other by means of a connecting element (47) which allows their reciprocal movement.

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.

The invention belongs to the technical field of detection devices, and particularly relates to an elevator landing door strength detection device, which comprises a support mechanism, an impact mechanism, a fixing mechanism and a test mechanism, and is characterized in that the impact mechanism performs self-adaptive strength impact on the surface of a door plate body according to test requirements during working; when the impact mechanism works, the fixing mechanism is automatically driven to work, the two sides of the door plate body are clamped and fixed, and meanwhile the clamping strength of the door plate body is adjusted in a self-adaptive mode according to the impact strength of the impact mechanism. When the fixing mechanism starts to work, the testing mechanism is automatically driven to work, the door plate body to be impacted is preprocessed, data of the maximum deformation quantity generated after the door plate body is impacted is marked in real time, the elevator landing door strength detection device replaces a traditional elevator landing door strength testing mode, and the detection efficiency is improved. The problem that the test accuracy is affected due to the fact that the deformation quantity in the impact test process is not accurate enough is solved.

The application belongs to the technical field of battery accessory testing, and particularly relates to a power impact testing system for new energy vehicles, which comprises a bottom plate, a fixing mechanism for fixing the position of a power supply is arranged on the upper surface of the bottom plate, two supporting plates are fixedly connected to the bottom plate, a guide groove is arranged in the supporting plate, a top plate is fixedly connected to the two supporting plates, a hydraulic cylinder is fixedly installed on the top plate, a driving pressing plate is fixedly connected to the output end of the hydraulic cylinder, and a sliding block is slidably connected to the guide groove. The impact force of an impact head on the power supply can be changed by adjusting the hydraulic pressure of the hydraulic cylinder, the value of the impact force can be accurately measured and read by a pressure measuring plate, the power supply is limited and fixed by the fixing mechanism, so that the power supply is prevented from shaking and deviating when being impacted by the impact head, and the power supply surface can be sprayed with fire extinguishing agent by the fire extinguishing mechanism, so that the power supply is prevented from being deformed and damaged due to fire.

According to the differential wheel limiting detection device and method, the rotating direction and the rotating speed of a wheel set can be limited in advance before the differential wheel moves in two directions and collides with a hard limit, so that the control performance of a vehicle is improved, the situation that an oil cylinder and the like fall off due to collision with the hard limit when the speed is high is avoided, and the problem that a traditional differential wheel set is poor in safety is solved. The system has the advantages of quick response, high safety, simple structure and the like, and is suitable for differential wheel control systems of equipment such as AGVs (Automatic Guided Vehicles) and mobile robots.

The invention discloses a vertical tunnel loading resistance performance test device and method, and relates to the technical field of test of resistance performance of protective equipment such as doors under specific loading. The device comprises a retaining wall arranged in an underground tunnel, a plurality of door front pressure boxes are arranged on the retaining wall, protective equipment is arranged on the front side of the retaining wall, a fixing rod is arranged on the rear side of the protective equipment, a plurality of door rear pressure boxes are arranged on the fixing rod in the height direction, and a sensor connecting rod is vertically connected to the fixing rod. A displacement sensor is arranged at one end of the sensor connecting rod close to the protective equipment. The method comprises the following steps of test protection equipment installation, test point arrangement, cable arrangement, connection test, loading device arrangement, tunnel sealing, detonation and post-detonation inspection. According to the invention, safe, controllable, repeatable and comparable resistance performance evaluation can be carried out on the whole door or door frame-wall body composite structure under the real boundary constraint and vertical installation state.

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 application provides a crash dummy, and relates to the technical field of crash dummies, and can improve the reliability of crash test data. A chest segment spine structure of the crash dummy comprises at least two first rigid thoracic vertebra pieces and at least two flexible thoracic vertebra pieces, the first rigid thoracic vertebra pieces and the flexible thoracic vertebra pieces are alternately arranged along the extension direction of the chest segment spine structure and sequentially connected in a head-to-tail mode, a rib piece is fixedly connected with the first rigid thoracic vertebra piece, the rib piece is arranged in one-to-one correspondence with the first rigid thoracic vertebra piece, and the at least two rib pieces are all slidably connected with a sternum piece along the extension direction of the chest segment spine structure. The compression and expansion of the flexible thoracic vertebra piece enable the chest segment spine structure to produce bending, stretching and lateral bending movements, the crash dummy can produce forward bending, backward bending and lateral turning responses, the injury condition of the crash dummy in a crash is consistent with the injury condition of a real human body, and the reliability of crash test data can be improved.

The utility model discloses a kind of unhooking system automation testing device, it is related to testing device technical field.The utility model includes: test frame;Unhooking device;Towing device, towing device is installed in the top of test frame, and the traction end of towing device is fixedly connected with unhooking device;Impact device, impact device is slidably fitted in test frame, and impact device is matched with unhooking device;Protective device, protective device includes telescopic baffle and restraint component;Wherein, restraint component includes shell, shell is installed in the side of test frame, and baffle lever is slidably fitted in shell.The utility model is rolled up traction rope by the motor drive winding roller of towing device, realizes the automation of unhooking device and impact device lifting.Compared with artificial lifting, the lifting height of this structure can be controlled Impact device, make the initial condition of multiple tests consistent, improve the repeatability of test data;While reducing labor cost, improve test efficiency.

Impact testing apparatuses are disclosed which simulate and measure various impact-related events associated with the operation of a drug delivery device. The impact testing apparatus may include an imapctor configured to simulate a plunger rod of the drug delivery device, and a guide sleeve configured to receive a syringe corresponding to the drug delivery device. The syringe may have a proximal end, a distal end defining an outlet, and an interior chamber extending between the proximal and distal ends and carrying a plunger. Additionally, the impact testing apparatus may include an energy source configured to reduce a distance between the imapctor and the plunger so that the imapctor strikes the plunger. Various sensors may be included to measure characteristics of one or more impacts caused by the impactor. Methods of impact testing a syringe filled with a fluid and carrying a plunger are also disclosed.

The invention provides a thermal shock test device and a test method, and belongs to the technical field of aero-engine hot end component detection. The test device comprises a test rack body, a heating assembly, a displacement control assembly and a cooling assembly, the test rack body is provided with a placing space for the heating assembly, the displacement control assembly and the cooling assembly; the heating assembly is provided with a channel opening; the displacement control assembly is arranged on the test rack body and is used for moving a test piece into the heating assembly through the channel opening or moving the test piece out of the heating assembly; and the cooling assembly is arranged on the test rack body and is used for cooling the test piece pulled out of the heating assembly. The test device can be used for carrying out thermal shock test on a test piece.

A fibre-reinforced polymer composite component 2 formed from a polymer matrix material containing fibre reinforcement. The component 2 comprises a main portion 4 and at least one raised feature 6 extending from a surface plane s of said main portion 4. The at least one raised feature 6 is arranged to incur visually perceptible damage when the component 2 is subject to an impact with an energy above a predetermined impact energy threshold and to resist an impact with an energy below the predetermined impact energy threshold.

The application discloses a kind of experimental measurement methods of non-spherical particle energy recovery coefficient, it is characterized in that, including the following steps: 1) establish the flat plate model of particle-wall collision working condition;2) establish non-spherical particle model and carry out DEM simulation;3) according to the motion parameter of non-spherical particle after collision, combined with free fall motion, the landing point of particle is calculated, and the random landing point distribution of non-spherical particle after collision with wall is quantified using probability density function;4) design several non-spherical particle models to carry out the above simulation and calculation, obtain the energy recovery coefficient and random landing point distribution of several different non-spherical particles;5) build artificial neural network training model, use Python tool to establish the nonlinear fitting relationship between random landing point distribution and energy recovery coefficient by artificial neural network, construct non-spherical particle energy recovery coefficient prediction model;The application has important significance to the research of particle-wall collision field.

The invention discloses a railway vehicle impact positioning method, device and equipment and a medium, and relates to the technical field of computers, and the method comprises the steps: obtaining a guided wave signal outputted by each piezoelectric sensor when a to-be-detected composite material of a railway vehicle is impacted; the piezoelectric sensor is arranged on the surface of the composite material to be detected; constructing a positioning model based on the installation position of each piezoelectric sensor and the flight time of the guided wave signal, and determining an error function of the positioning model; the function is used for quantifying the deviation between the theoretical distance and the actual distance; the theoretical distance is obtained based on the assumed coordinate of the potential impact point and the mounting position of the piezoelectric sensor, and the actual distance is obtained based on the flight time and the propagation speed of the guided wave signal; and outputting the optimal coordinate estimation of the potential impact point and the optimal propagation speed estimation of the guided wave signal by minimizing the error function. According to the invention, the inherent error caused by the constant wave velocity is avoided; the engineering implementation cost is reduced; the positioning precision is obviously improved; and the real-time performance of impact positioning is ensured.

The application relates to the field of impact dynamics tests, and particularly discloses an electronic instrument high-g-value impact characteristic test evaluation device and method. The device comprises an adapting section, a pulse shaper, and a base. The adapting section is coaxially connected with the tail of a high-speed gas gun launch tube to form a radially constrained loading channel and is movably connected with an impact mass. The pulse shaper is arranged in the adapting section. The base is slidably connected in the adapting section and located behind the pulse shaper, and is used for bearing the load transmitted by the impact mass when the impact mass hits the pulse shaper. The base has a front cavity and a rear cavity, and the rear cavity contains a measuring body. A diaphragm pressure gauge is arranged on the front end impact surface of the base, a base accelerometer is arranged in the front cavity, and a multi-parameter sensor is arranged in the measuring body. The device can accurately obtain an excitation load, realize distributed synchronous measurement of multiple physical quantities, has reliable signal line protection and kinetic energy absorption mechanism, and improves the accuracy and reliability of performance evaluation of electronic instruments and protective components of the electronic instruments under a high-g-value impact environment.

The utility model provides a slope impact testing machine. The slope impact testing machine is characterized in that a base is arranged on one side of the bottom of an impact table; the first bearing seat is connected to the top end of the side, away from the impact table, of the base through bolts. The impact track frame is arranged over the base, second bearing seats are clamped on the front side and the rear side, close to the impact table, of the impact track frame, the bottoms of the second bearing seats are connected with the impact table, a lifting module is arranged in the center of the side, close to the impact table, of the impact track frame, and the bottom of the lifting module is clamped in the center of the first bearing seat; the loading trolley is arranged at the top of the impact track frame; the center of the trolley positioning and stopping module is arranged at the bottom of the loading trolley, and the left side and the right side of the trolley positioning and stopping module are arranged on the left side and the right side of the bottom of the impact track frame. Technicians judge whether the package design is qualified or not by judging whether the outer package of the household appliance has large deformation and fracture or not.

This utility model belongs to the technical field of drive shaft impact testing benches, specifically an automotive drive shaft impact testing bench, including a body and a base at its upper end. A sliding seat and a fixed seat are respectively installed at both ends of the base. A rotating seat is installed inside the fixed seat, and a transfer ball is fixed to the front end of the rotating seat. A three-jaw chuck is installed inside the front end of the fixed seat via the transfer ball. A ring frame is slidably installed inside the fixed seat, located outside the three-jaw chuck. A conical platform is fixed to the inner side of the front end of the ring frame. This utility model allows drive shafts to be installed in an inclined state, making it easier for a single person to operate long and heavy drive shafts. It also simulates different bumpy conditions during vehicle operation, making the test results closer to reality.

This invention provides a track elevation adjustment device, comprising: an adjustment bracket; a track clamp vertically disposed inside the adjustment bracket in a position-adjustable manner; and a drive unit with a power output end connected to the track clamp. This invention supports the track clamp and drive unit through the adjustment bracket, clamps the track to be adjusted through the track clamp, and drives the track clamp to adjust its vertical position through the drive unit, thereby vertically lifting the track to be adjusted and adjusting the adjusting shims at the bottom of the track. After adjustment, the drive unit drives the track clamp to lower its vertical position so that the track falls onto the adjusted shims, completing the elevation adjustment. The device allows for one-time elevation adjustment, precise adjustment of the track's height, and convenient adjustment.

The utility model discloses a test device for simulating impact durability of a vehicle door. The test device comprises a fixed support and a door plate. The fixing support comprises a base and an impact plate, the impact plate is fixedly arranged on the base, the impact plate is provided with a door frame matched with the door plate, and a plurality of rubber strips are arranged on the edge of the door frame; one side of the impact plate is provided with a hinge part, and the door plate is hinged to the impact plate based on the hinge part. According to the utility model, through arranging the rubber strip, repeated collision between the door plate and the door frame after collision between the door plate and the collision plate is avoided, thereby facilitating reduction of damage of impact and vibration to the test device, and prolonging the service life of the test device.

The invention relates to the technical field of simulation testing, and discloses a probe collision detection method, device and equipment and a medium, and the method comprises the steps: inputting all to-be-measured points into a simulation test model; marking all points to be measured on the workpiece model; calling an initial probe model from the probe database, and controlling the initial probe model to perform collision test on the to-be-measured point on the workpiece model through the measuring rod model to obtain initial collision test results corresponding to each initial measurement angle of the initial probe model; and when the initial collision test results corresponding to all the initial measurement angles of the initial probe model are the first test results, replacing the next probe model and retesting until a second test result is obtained or the initial collision test results corresponding to all the probe models are the first test results. According to the invention, through the simulation collision test, the collision between the measuring rod and other objects and the collision between the measuring needle and the workpiece are avoided, and the cost and risk of actual operation are reduced.

The invention relates to the technical field of vehicle assembly vibration fatigue tests, in particular to a road load spectrum-based accelerated random vibration spectrum determination method, which comprises the following steps of: selecting i-circle data of each characteristic road surface under full-load, half-load and no-load working conditions as original data of accelerated random vibration spectrum calculation; calculating an impact response spectrum and a fatigue damage spectrum of the i-circle data of each characteristic pavement; respectively accumulating the fatigue damage spectrum statistical values of the three working conditions; packaging the maximum values of the impact response spectrums under the three working conditions; according to a fatigue damage accumulation theory, calculating a fatigue damage spectrum of the total target mileage according to the number of cycles of three working conditions; packaging the maximum value of the impact response spectrum of the whole circle of characteristic pavement under the three working conditions to obtain the maximum value of the overall target mileage impact response spectrum; synthesizing an accelerated random vibration spectrum by using the fatigue damage spectrum of the total target mileage according to a damage equivalence principle; and finally, carrying out ERS calculation on the generated accelerated random vibration spectrum, and checking the correctness and rationality of the accelerated random vibration spectrum.