137 results about "Shock test" patented technology

The invention discloses an underwater explosion impact equivalent loading test device and method, and belongs to the technical field of dynamic impact test mechanics, the underwater explosion impact equivalent loading test device comprises a light gas gun system, a combined water shock tube system and a measurement control system, the light gas gun system is a shock wave load loading system of a water shock tube, and the combined water shock tube system is connected with the measurement control system. Comprising a piston, a working table support, a steel pipe, a pressure sensor, a connecting flange, a connecting assembly, a transparent pipe, a double-thread screw assembly, a front panel, a test sample, a rear panel, a working table fixing support and a working table top, and a measurement control system comprises a light gas gun pressurization and emission controller, a high-speed acquisition instrument, a first high-speed camera and a second high-speed camera. The underwater explosion impact equivalent loading test device and the underwater explosion impact equivalent loading test method are compact in structure, convenient to use and suitable for researching underwater dynamic impact protection performance and fluid-solid coupling mechanism of materials or structures in laboratories.

The invention relates to the technical field of self-priming pump detection, and discloses a self-priming pump body and a pressure resistance testing machine thereof.The self-priming pump body comprises a base, a driving motor is fixed to the base, a shell is fixed to the base, a driving cover is fixed to one side of the shell, a transmission rod is rotationally arranged in the driving cover, and the output end of the driving motor is connected with an impeller in the shell through the transmission rod; a water inlet is fixed to one side of the shell, a water outlet is fixed to the shell, the pressure resistance testing machine comprises a machine table, a material conveying table is fixed to the machine table, two testing tables are fixed to one side of the material conveying table, material conveying rollers are rotationally arranged on the material conveying table in an array mode, two discharging ports are formed in one side of the material conveying table, a first air cylinder is fixed to one end of each testing table, and a circular plate is fixedly arranged at the output end of the first air cylinder. The first test piece is used for testing the interior of the self-priming pump, impact of sundries in conveyed liquid on the interior of the pump body of the self-priming pump can be simulated, the second test piece is used for detecting the exterior of the self-priming pump, the compressive strength of the pump body of the self-priming pump is tested, and the detection precision is high.

The invention discloses a cold and hot impact test device and method for an automobile electronic component, and belongs to the technical field of cold and hot impact test equipment.The cold and hot impact test device for the automobile electronic component comprises an experiment box, a mounting column is rotationally arranged in the experiment box, and six partition plates are evenly distributed on the mounting column in the circumferential direction; the ends, away from the mounting columns, of the partition plates make movable contact with the inner wall of the experiment box, the six partition plates divide the inner space of the experiment box into a thermal shock test area, a first buffer area, a second buffer area, a cold shock test area, a third buffer area and a fourth buffer area, a thermal shock assembly is arranged on the experiment box, and a cold shock assembly is arranged on the experiment box. An intermittent rotating assembly connected with the mounting column is arranged at the bottom of the experiment box, a placement assembly is arranged between every two adjacent partition plates, a clamping assembly used for fixing an electronic component body is arranged on each placement assembly, and the rapid thermal shock cycle test device has the advantages of being effective in placement, stable in clamping, rapid in thermal shock cycle test, stable in structure and convenient and fast to operate.

A shock testing machine including: a test platform for holding an item to be shock tested; a carriage for carrying the test platform and being movable relative to the test platform in a testing direction, the testing direction being a direction of movement of the carriage; one or more rails movably supporting one of the test platform and the carriage; a stop configured to stop the carriage from moving in the testing direction at a predetermined location while allowing the test platform to continue moving in the testing direction past the predetermined location; and a brake configured to decelerate the test platform after the carriage has been stopped by the stop.

The utility model relates to the technical field of test boxes, and discloses a temperature shock test box which comprises a cold and hot box body, universal positioning wheels are fixedly connected to the outer surface of the lower end of the cold and hot box body, a control chamber is fixedly connected to the outer surface of one side of the cold and hot box body, and a case is fixedly connected to the outer surface of the upper end of the cold and hot box body. And an observation window is formed in the outer surface of the front end of the cold and hot box body, when the cold and hot box is used, a second handle can be stretched outwards through an arranged conveying device, and moving wheels at the bottoms of side plates can compress limiting buckles arranged on sliding groove plates downwards, so that the moving wheels can slide out to drive a surface plate to move to the outside; a worker can take out a test article in the placement plate at the upper end of the surface plate from the outside, and does not need to enter the equipment manually to take out the test article, so that the human body is prevented from being in contact with high-temperature and low-temperature environments in the equipment, the human body safety is protected, the equipment use safety is improved, and potential safety hazards caused by human misoperation are avoided.

The simulation method for the mechanical impact test of the battery comprises the following steps: respectively carrying out tensile test on a sample piece of a preset positive plate, a sample piece of a preset negative plate, a sample piece of a preset diaphragm and a sample piece of a preset shell to obtain corresponding mechanical data; and / or respectively carrying out compression test on the components to obtain corresponding mechanical data; according to the material parameters and the mechanical data corresponding to the preset positive plate, the preset negative plate, the preset diaphragm and the preset shell, constructing a battery model; an impact process model is constructed according to the preset impact condition, an impact simulation test is conducted on a battery model corresponding to the preset battery through the impact process model, a simulation test result is obtained, and the simulation test result comprises energy data corresponding to the preset positive plate, the preset negative plate, the preset diaphragm and the preset shell. And performing an impact simulation test on the battery model by using the impact process model, so that the energy change of the preset positive and negative plates, the diaphragm and the shell in the impact process can be quantified.

A test assembly and method for performing a shock test of an article includes a pneumatic gun assembly, a Hopkinson bar assembly, a magnetic catch, and a support assembly. The support assembly suspends the article in alignment with the magnetic catch. The magnetic catch retains the article against the Hopkinson bar assembly. The pneumatic gun assembly includes a striker for propagating a shock through the Hopkinson bar assembly into the article.

The invention relates to the technical field of laser ablation tests, in particular to a laser ablation damage tolerance test method and device for a ceramic matrix composite. The invention discloses a laser ablation damage tolerance test method for a ceramic matrix composite material. The method comprises the following steps: preparing a test device; performing a laser shock test; analyzing a test result; performing finite element simulation on the laser shock test; and comparing # imgabs0 # and # imgabs1 # obtained by the test with # imgabs2 # and # imgabs3 # obtained by simulation, and adjusting simulation parameters in COMSOL software to enable a test result to be matched with a simulation result, so as to form a simulation method capable of accurately predicting the ablation resistance of the ceramic matrix composite material. According to the finite element simulation method for the laser ablation damage tolerance of the ceramic matrix composite, the high-temperature-resistant damage tolerance values under various working conditions can be simulated and predicted, the test cost is saved, finite element simulation parameters are adjusted based on actual test results, and the simulation accuracy is ensured.

A shock testing machine including: a carriage for holding a component to be tested, the carriage being configured to be movable in a linear direction along one or more elongated rails; a drum rotatable on a shaft, the drum having a circumferential surface; a cable having one end connected to the carriage and an other end connected to the drum; a motor having an output connected to the shaft to rotate the drum under the motive power of the motor to wind the cable on the circumferential surface of the drum; and a clutch disposed in a power train operatively connecting the motor to the drum, the clutch having a disengaged state and an engaged state. Where the motor is controlled to disengage the clutch while the motor reaches a predetermined rotational speed or predetermined rotational torque and to engage the clutch when the motor reaches the predetermined rotational speed or predetermined rotational torque to accelerate the carriage and component to be tested in the linear direction.

The utility model discloses a hot and cold shock test box which comprises a hot and cold shock test box main body, the bottom of the hot and cold shock test box main body is fixedly connected with a heating box, the top of the hot and cold shock test box main body is fixedly connected with a refrigerating box, and the outer walls of the two sides of the hot and cold shock test box main body are fixedly connected with mounting boxes. A second ventilation pipe is installed on the inner side of the installation box in a penetrating mode, a second electric valve is arranged on the outer wall of the second ventilation pipe, an exhaust fan is fixedly connected to the interior of the installation box, and a supporting frame is fixedly connected to the inner side wall of the cold and hot impact test box body. According to the utility model, by starting the second electric valve and the exhaust fan, hot air and cold air in the cold and hot shock test box main body can be exhausted through the second ventilation pipe when the exhaust fan runs, so that the cold air and the hot air in the cold and hot shock test box main body are difficult to replace quickly; the experiment effect of the cold and hot impact test box on an experiment sample is improved.

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.

A self-priming pump body and a pressure resistance testing machine therefor. The self-priming pump body comprises a base, a drive electric motor being fixed on the base, a shell being fixed on the base, a drive cover being fixed on one side of the shell, a transmission rod being rotatably arranged in the drive cover, the output end of the drive electric motor being connected to an impeller in the shell by means of the transmission rod, a water inlet being fixed on one side of the shell, and a water outlet being fixed on the shell. The pressure resistance testing machine comprises a machine table, a material-conveying table being fixed on the machine table, two testing tables being fixed on one side of the material-conveying table, material conveying rollers being rotatably arranged in an array on the material-conveying table, two material discharge ports being provided on one side of the material-conveying table, a first cylinder being fixed on one end of each test table, and a circular plate being fixedly arranged at an output end of each first cylinder. In the present invention, the interior of a self-priming pump is tested by means of a first testing piece, which can simulate the impact of impurities in conveyed liquid on the interior of the self-priming pump body; and the exterior of the self-priming pump is tested by means of a second testing piece, which tests the compressive strength of the self-priming pump body, thereby achieving a high test accuracy.

The present invention discloses a periodic hammer impact rock vibration destruction testing machine and testing method, which belongs to the field of rock mechanical property testing. The testing machine includes: a periodic vibration impact testing system, which is used to subject the rock sample to be tested to confining pressure and axial pre-static load, and then subject the rock sample to be tested to axial dynamic impact according to a set vibration impact frequency; a data acquisition system, which is used to record the damage behavior characteristics of the rock sample to be tested during the vibration impact process; a frequency control system, which is used to provide the vibration impact frequency and vibration impact mode for the periodic vibration impact testing system, and the frequency control system is connected to the computer and the periodic vibration impact device. The present invention applies periodic longitudinal impact to the test sample under the condition of applying confining pressure and axial pre-static load to the test sample, thereby simulating the vibration destruction process caused by dynamic disturbance of the rock mass under the conditions of blasting, ore mining, ground stress changes, etc.

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.

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.

The utility model discloses a transmission main shaft impact resistance testing device which comprises an impact resistance testing device body, the impact resistance testing device body comprises a testing machine base, a base is fixed to the middle of the upper surface of the testing machine base, and a portal frame is fixed to the end of the upper surface of the testing machine base. An impact cylinder is fixed in the middle of the top end of the portal frame; by designing a downward-pressing fixing mechanism, the angle of a downward-pressing clamping plate can be adjusted according to the type of an impact-resistant transmission main shaft, a threaded rod is held by hand to enable the end of the threaded rod to rotate in an internal thread of a connecting plate, a movable adjusting plate is driven to move downwards when the threaded rod is screwed in, and the downward-pressing clamping plate is driven to generate a certain angle and stably support when the movable adjusting plate moves downwards; and then when the downward pressing air cylinder moves to drive the connecting plate and the downward pressing clamping plate to move downwards, the transmission main shaft is fixed, and the transmission main shafts of different models can be clamped and fixed conveniently.

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

A test assembly and method for performing a shock test of an article includes a pneumatic gun assembly, a Hopkinson bar assembly, a magnetic catch, and a support assembly. The support assembly suspends the article in alignment with the magnetic catch. The magnetic catch retains the article against the Hopkinson bar assembly. The pneumatic gun assembly includes a striker for propagating a shock through the Hopkinson bar assembly into the article.

The utility model discloses a temperature control device for a rapid cold and hot impact test, which comprises a base, and water storage tanks are respectively arranged on two sides of the top of the base; by starting the motor, the power output end of the motor drives the rotating shaft to rotate, the rotating shaft drives the stirring blades to rotate while rotating, and the stirring blades stir and melt original water in the first cavity and subsequent water injected into the third pipe body while rotating, so that the temperature of the water is kept uniform, and the subsequent temperature adjusting effect is improved; the pump is started, water in the water heater and the water cooler is conveyed into the first pipe body through the pump, then the water enters the second cavity through the first pipe body to be stored for standby application, and by arranging the third pipe body, the water after heat exchange can enter the first cavity in the water storage tank again through the third pipe body. Therefore, the purpose of circulating heat exchange is achieved.

The utility model discloses a temperature shock test box, particularly relates to the technical field of temperature test, and comprises a temperature shock test box body, the middle part of the upper end of the temperature shock test box body is provided with a first electric telescopic rod, and the upper end of the temperature shock test box body is provided with a second electric telescopic rod on the outer side of the first electric telescopic rod; a supporting partition plate is arranged in the middle of the inner end face of the temperature impact test box body, a circular adaptive groove is formed in the middle of the supporting partition plate, and a sealing isolation pad is arranged on the inner side end face of the circular adaptive groove. In actual use, the sealing performance between the hot cavity and the cold cavity can be effectively improved through the corresponding arrangement state of the supporting partition plate, the supporting sliding sleeve, the sealing isolation pad, the second sealing sliding plate and the sealing sliding pad, so that the influence on the test effect caused by series flow of heat between the two cavities when a test article moves is avoided, and the test efficiency is improved. And meanwhile, when the height of the first sealing sliding plate and the height of the supporting sliding sleeve are adjusted, the moving stability is improved.

The present invention discloses a cam type shock test device, including a foundation, a base on the foundation, a cam type shock device and a vibration table, the cam type shock device includes a mounting base, a reduction motor, a reduction motor bracket, a cam shaft system component and a roller shaft system component mounted on the cam shaft system component, the cam shaft system component includes a camshaft and a bearing end cover, a bearing seat, a bearing spacer, a snail cam and a deep groove ball bearing on the camshaft, the roller shaft system component includes a roller shaft and a T-block on the roller shaft, a support seat is arranged on the top of the T-block, a waveform generator and a work surface are arranged in sequence from bottom to top above the support seat, the extension table includes a support frame and an extension disk above the support frame, the bottom of the extension disk extends from the lower middle part of the support frame and is connected to the top of the work surface. The present invention can be widely used in shock test assessments of various large-size and heavy-weight specimens.

The utility model discloses a cold and hot shock test box with an operation screen protection structure, which comprises a test box, a low-temperature box and a high-temperature box are arranged on the inner wall of the test box, the low-temperature box is communicated with the high-temperature box, a lifting frame is jointly arranged in the inner cavity of the high-temperature box and the inner cavity of the low-temperature box, a touch screen is arranged on the surface of the test box, and the touch screen is connected with the operation screen protection structure. And a carrier block is fixedly mounted on the surface of the test box through a bolt. According to the touch screen protection device, the clamping block is shifted to be separated from the second gear, the protection curtain is held and pulled to be unwound at the moment, then the protection curtain drives the rotating rod and the second shaft rod to rotate, the second shaft rod drives the second gear and the first shaft rod to rotate through the first gear, then the first shaft rod drives the coil spring to deform, and meanwhile the protection curtain shields the outer side of the touch screen; therefore, the electronic touch screen on the surface of the test box body can be shielded and protected, the situation that the electronic touch screen is damaged due to collision of foreign objects is avoided, and the purpose of protecting the electronic touch screen is improved.

The embodiment of the invention provides a plate-type fuel assembly anti-seismic test bench and method, and relates to the technical field of nuclear reactor safety tests. The invention aims to solve the problems that a plate-type fuel assembly test device is easy to cause distortion of measured data due to self-vibration interference under earthquake excitation and cannot provide an effective verification reference for a numerical model. According to the plate type fuel assembly anti-seismic test bed, through the design of the main body structure of the bottom plate and the water tank, the first-order inherent frequency of the test bed in the no-load state and the full-load state is larger than 60 Hz, and the transverse static rigidity of the test bed is larger than 20 kN / mm. The plate-type fuel assembly anti-seismic test method is implemented by adopting the rack. The test bench has inherent frequency which is far higher than the frequency of a tested piece and the frequency of earthquake excitation, and enough static rigidity and dynamic rigidity, thereby fundamentally eliminating the interference of the vibration of the bench itself on the result of an anti-seismic test, and ensuring the accuracy and reliability of measured data.

The present invention discloses a constant temperature and humidity test chamber. The technical solution thereof mainly comprises a chamber body with a hot chamber and a cold chamber, wherein a storage box is slidably arranged between the hot chamber and the cold chamber. By changing the chamber in which the storage box is located, the ambient temperature of the material can be changed, thereby realizing a hot and cold shock test. At the same time, by changing the structure of the storage box and the setting of the program, a constant temperature and humidity test can also be realized. Thus, multiple functions can be integrated into one device, allowing a device to be used for multiple purposes, thereby increasing the scope of use of the device.

The utility model discloses a hanging basket connecting structure for a hot and cold shock test box, which comprises a test box body, a hot chamber and a cold chamber are arranged in an inner cavity of the test box body, the inner wall of the test box body is fixedly connected with a lifting cylinder through a bolt, the inner cavity of the hot chamber and the inner cavity of the cold chamber are jointly provided with a hanging basket frame, and the lifting cylinder is fixedly connected with the lifting cylinder through a bolt. And the top of the hanging basket frame is fixedly connected with a cylindrical box. The sliding rod is pressed to drive the cylindrical block to move backwards, meanwhile, the sliding rod drives the spring to be compressed through the circular plate, then the hanging basket frame is arranged on the surface of the lifting air cylinder in a sleeving mode, the L-shaped plate penetrates to the position above the hanging basket frame at the moment, then the sliding rod is loosened, and resilience force of the spring drives the cylindrical block to enter an inner cavity of the circular hole through the circular plate and the sliding rod. And then the L-shaped plate and the hanging basket frame are locked, so that the hanging basket and the lifting air cylinder can be quickly disassembled and assembled, the hanging basket can be conveniently maintained and replaced subsequently, and the purpose of improving the convenience of subsequent use and maintenance is achieved.

The subject disclosure relates to a system and method for testing units-under-test (UUT) with a thermal shock. The thermal shock testing system can include a chamber having an inlet and an outlet, the chamber being configured to provide a thermal shock to a unit-under-test (UUT), a pump configured to fluidly connect to the inlet of the chamber and direct a temperature controlled liquid through a channel embedded in the chamber, and a boiler and a chiller fluidly connected to the pump, the temperature of the liquid being controlled by at least one valve configured to alternatively direct hot or cold fluid to the inlet of the chamber.

The invention relates to the technical field of equipment testing, in particular to shock test equipment and method for a buffer. Comprising a supporting body, a first spring and a telescopic piece are installed at the top of the supporting body, and a pressure sensor is installed at the joint of the top of the supporting body and the first spring; a positioning mechanism is fixedly mounted at the telescopic end of the telescopic piece; a lifting mechanism is installed at the top of the supporting body, the free end of the lifting mechanism is connected with an impact part, and the lifting mechanism is used for pulling the impact part to the designated height. The positioning mechanism is used for positioning and adjusting the initial position of the impact part, and the first spring is located over the impact part; buffers are placed at the bottom of the supporting body. The shock test equipment for the buffer can adjust the impact speed and the impact acceleration of the impact part by changing the external force applied to the impact part and the mass of the impact part, so that extreme working conditions such as high-speed impact and multiple impacts are simulated, and the performance redundancy of the buffer in a limit state is verified.

The invention relates to a distributed underwater explosion impact test device. The device comprises a water tank, a distributed mounting rack, a detonation assembly, a sample fixing assembly and a counterweight assembly, the distributed mounting frame is arranged in the water pool and is provided with a plurality of connecting ends which are circumferentially arranged along the central axis of the distributed mounting frame, and each connecting end can move in the direction close to or away from the central axis of the distributed mounting frame; the detonating assembly is arranged in the middle of the multiple connecting ends, and the detonating assembly is connected with the bottom of the distributed mounting frame; the sample fixing assembly is provided with a plurality of sample fixing ends for fixing samples, and the plurality of sample fixing ends are connected with the plurality of connecting ends of the distributed mounting rack; the counterweight assembly is detachably arranged on the distributed mounting frame; compared with a traditional single-station and multi-time detonation test mode, the explosion pool starting frequency and explosive consumption are remarkably reduced, the test efficiency is improved, and the comprehensive test cost is reduced.

The invention belongs to the technical field of automobiles, and particularly relates to a method for evaluating and testing cold and hot impact resistance of a three-way catalyst of a passenger car. Comprising the following steps that 1, thermal shock racks are connected, and the airflow direction is set; 2, preheating a liner in the three-way catalyst before the test; 3, setting working conditions and test parameters, and carrying out a thermal shock test on the thermal shock rack; and 4, performing failure judgment on the carrier, the shell and the liner of the three-way catalyst, thereby evaluating the performance. According to the method, the cold and hot impact resistance of the part is quickly verified by simulating the working conditions of extreme high temperature and low environment temperature of the engine through the simple rack, and compared with a traditional method, the period is greatly shortened, the required equipment and site are simple, the verification cost is greatly saved, the influence of the extreme environment can be simulated, and the verification result is accurate.

The invention discloses a hardware handle which is manufactured through the steps that a plastic inner support is provided, the plastic inner support is placed in an injection mold to be subjected to injection molding, and the hardware handle is obtained after cooling. According to the invention, the plastic inner bracket is adopted, so that the yield of the product is improved from 30% to about 80% when the product is subjected to a high-low temperature impact test, the appearance quality of the surface of the product is also improved, the injection molding cooling time is shortened, the product cost is also reduced, and materials are also conveniently recycled for defective products.