2163 results about "Test bench" patented technology

The invention provides a vibration test bench, and relates to a vibration test device, and the vibration test bench comprises a pedestal, and a plurality of vibration frames which are arranged on the pedestal in parallel at intervals and are sequentially arranged on the pedestal from top to bottom; each sliding guide rail is arranged between every two adjacent vibration frames and between the vibration frame on the lowermost layer and the base, and the guide directions of the sliding guide rails are different from one another; each driving mechanism is fixedly connected to the vibration frame located on the lower layer or the base and drives the vibration frame located on the upper layer to do reciprocating rectilinear motion along the corresponding sliding guide rail. Each locking mechanism is arranged between every two adjacent vibrating frames and between the vibrating frames and the base, and each locking mechanism can selectively lock the reciprocating motion of the vibrating frame located on the upper layer; the control unit is in communication connection with all the driving mechanisms and independently controls operation of all the driving mechanisms. The vibration test bench can realize multi-degree-of-freedom movement, and has a broadband vibration frequency / amplitude adjusting function.

The invention belongs to the technical field of asphalt mixed material experiments, and particularly relates to test equipment for measuring the high-temperature stability performance of an asphalt mixed material, the test equipment comprises a test platform, an environment control module and a data acquisition module, the test platform comprises a test bracket, samples to be tested are uniformly arranged on an inclined adjusting plate on the test bracket, and the environment control module is connected with the data acquisition module; the data acquisition module comprises a laser displacement sensor, and the laser displacement sensor is arranged at the position, corresponding to the to-be-tested sample, of the adjusting plate; according to the invention, the laser displacement sensor located in the protection box is started at regular time, and the relative displacement change between the laser displacement sensor and the to-be-tested sample is calculated according to the change of the reflected laser, so that the actual deformation displacement of the to-be-tested sample is accurately measured and recorded and is transmitted to external computer equipment; and real-time and accurate data acquisition of the deformation degree of the to-be-tested sample is realized.

The invention discloses a hydraulic system sealing test bench and a sealing performance test method, and belongs to the technical field of sealing performance detection, the test bench comprises a vibration device, a pressure control system, a sealing element installation device, a flow adjusting system and a micro leakage detection unit; a to-be-tested sealing element is installed in the sealing element installation device to form a sealing cavity, and the sealing cavity is communicated with the pressure control system, the flow adjusting system and the hydraulic oil tank through pipelines to form a closed hydraulic loop. The vibration device is arranged on the outer side of the sealing element mounting device and used for applying vibration loads, the pressure control system is used for providing and adjusting hydraulic pressure in the sealing cavity, the flow adjusting system is used for controlling the flowing speed and flow of a hydraulic medium, and the micro-leakage detection unit is arranged below the sealing element mounting device and used for detecting leakage of the sealing cavity. The method has the advantages of being high in test condition controllability, high in leakage detection sensitivity, wide in adaptability and high in test result engineering guidance.

The invention belongs to the technical field of integrated circuit testing, and particularly relates to an FPGA software and hardware cooperation testing platform based on a BFM. The test platform is formed by connecting a BFM with a Testbench, an AXI bus, an off-chip DDR and a DUT. The test process comprises the steps that the Testbench issues parameters through a transaction function interface, the BFM reads an excitation vector from the off-chip DDR / on-chip BRAM through an Avalon main interface, adaptive transmission of a system bus clock domain and a DUT clock domain is completed through double asynchronous FIFO (SNDfifo / RECfifo), and signal level interaction with the DUT is achieved through a pin protocol interface; the state machine dynamically switches long and short simulation modes according to the vector length, and drives the output vector to be written back and stored; the error monitoring unit monitors data flow faults in the whole process and outputs seven types of error reporting codes. The simulation equivalent frequency reaches a 10 megahertz level, and the method is suitable for efficient verification of the digital IC.

The invention provides a vibration measurement device for motor equipment, and relates to the field of vibration measurement, and the device comprises a main body support frame, and the left and right sides of the top of the main body support frame are provided with self-locking worm gears A; a mounting angle adjusting shaft is rotationally mounted on the inner side of the main body supporting frame; self-locking worms A are arranged on the left side and the right side of the mounting angle adjusting shaft; the self-locking worm A is matched and connected with the self-locking worm gear A; guide pieces are arranged on the left side and the right side of the main body supporting frame. A mounting angle adjusting part is arranged in the middle of the mounting angle adjusting shaft; the vibration testing device can test vibration of motor equipment at different installation angles and output angles, the universality and accuracy of the vibration testing result of the device are improved, and the problem that the vibration amplitude of the motor equipment is affected to a certain extent due to installation modes at different angles is solved. And a vibration measurement result obtained by only testing plane installation does not have universality.

The invention belongs to the technical field of piezoelectric element testing, and particularly relates to a high-temperature piezoelectric sensitive element sensitivity calibration device which comprises a frame, a plurality of test benches vertically arranged in the height direction of the frame at equal intervals, a heating unit in the frame, a measuring circuit, a processing unit and prompt units on the test benches. Each test board is provided with a piezoelectric element fixing seat and a force applying device, the measuring circuit is connected with the fixing seat to collect output signals, the processing unit calculates sensitivity deviation and temperature deviation and obtains a reminding coefficient by establishing a unified reference and calibrating the measuring circuit, periodically collecting the output signals and temperature data, and when the coefficient meets a preset condition, the force applying device is started. And the control prompt unit gives an adjustment instruction, and after adjustment, resetting and data recording are performed. The device realizes multi-element synchronous calibration through parallel layout of multiple test benches and independent temperature control, combines temperature and attitude real-time compensation, not only improves calibration efficiency, but also guarantees calibration precision, and is suitable for sensitivity calibration of piezoelectric sensitive elements in a high-temperature environment.

The invention discloses a motor test bench system, which comprises a hardware system architecture and a software system architecture, wherein the hardware system architecture comprises a mechanical load and sensing unit, a centralized power supply and excitation unit, a data acquisition and control center and an upper computer system; the software system architecture comprises a unified data layer, an automatic control layer, a dynamic load regulation layer, a full-automatic test sequence layer, a man-machine interaction layer, a data analysis and report layer and a collaborative development interface; the problems that an existing test bench is single in signal collection, incomplete in information collection and poor in data synchronism; the load cannot be dynamically changed in real time; and high-order test data results are poor in visualization and cannot be directly converted into test reports.

The invention discloses a self-adaptive test system and method for a hydraulic power unit, and the system comprises a test bench which is provided with a fixing tool for fixing the tested hydraulic power unit; the oil tank unit is arranged in the test bed and is used for supplying oil to and pumping oil from the tested hydraulic power unit; and the counterweight test unit is arranged in the test bench, the counterweight test unit comprises a counterweight module, and the counterweight module is connected with a working oil port of a tested hydraulic power unit through a first oil path. The device is simple in structure, directly simulates the real gravity load borne by the hydraulic execution mechanism through the counterweight module, and can accurately test the lifting and descending dynamic performance and the pressure maintaining internal leakage characteristic of the power unit under the load condition. The problems that a traditional back pressure method cannot truly simulate the gravity load, and descending speed control and energy recovery performance are difficult to evaluate are effectively solved.

The invention discloses a variable-shaft-diameter rolling bearing testing device and testing method, and aims to solve the problems that an existing rolling bearing testing device is difficult to adapt to bearings with different shaft diameter specifications, and a main shaft needs to be replaced frequently. The device is composed of a testing platform, a lead screw driving mechanism, an axial loading mechanism, an inner diameter variable mechanism, an outer diameter variable mechanism, a main shaft, a bearing seat mechanism, a main shaft coupler, a main shaft motor and a supporting frame. The inner diameter variable mechanism adapts to the inner diameters of different rolling bearings through a plurality of ring petals and a chuck structure, the outer diameter variable mechanism can adjust the outer diameter and the radial applied force in real time according to the outer diameter of the rolling bearing, the axial loading mechanism can apply a preset axial load to the bearing, and besides conventional constant axial force, the axial loading mechanism can also apply axial torque in different directions. The device can adapt to the testing of rolling bearings with various shaft diameter specifications without replacing the whole set of main shaft, effectively shortens the testing preparation time, and improves the testing efficiency. And the universality and the applicability are high.

The invention provides a dynamic strength test system and method for a soft rock biaxial Hopins compression bar, and the system comprises an axial impact loading unit which is used for generating an axial impact load; the confining pressure loading unit is used for applying radial confining pressure to the sample; the high-pressure fluid injection unit is used for injecting high-pressure fluid into the sample and simulating different internal water pressure and water saturation conditions; the data acquisition unit is used for recording impact load, confining pressure, internal water pressure and sample dynamic response data in real time; the control system is used for coordinately controlling the axial impact speed, the confining pressure and the internal water pressure value; by integrating the axial impact loading unit, the hydraulic servo confining pressure loading unit and the high-pressure fluid injection unit, a test platform capable of truly simulating a complex stress-seepage coupling environment where the deep soft rock is located is formed; therefore, the synchronous, independent and accurate control of axial dynamic load, constant or dynamic confining pressure and internal pore water pressure is realized.

The invention discloses a tractor dynamic load reliability coupling test system and method, and belongs to the technical field of non-road vehicle testing. The system comprises a multi-dimensional data management platform, a tractor dynamic load reliability coupling test bench, a performance analysis platform and a data server. The multi-dimensional data management platform collects field working condition data and test data, the test bench integrates a plurality of loading systems and simulation systems such as direct-drive type driving wheels, and a plurality of functional parts of the tractor can be dynamically coupled, loaded and tested at the same time in a simulated field environment; and the performance analysis platform is connected with the data server, and evaluates the comprehensive performance and reliability of the whole tractor and the functional parts thereof through a quantitative formula. According to the invention, indoor reproduction of a field operation scene is realized, test efficiency and reliability evaluation comprehensiveness are improved, and the method is suitable for whole tractor performance test.

The embodiment of the invention relates to the technical field of rotary joint testing, one embodiment of the invention provides a rotary joint test board used for testing a rotary joint, the rotary joint is provided with a first joint part and a second joint part which rotate relatively, and the rotary joint test board comprises a frame body; the seat body is arranged on the frame body and used for being connected with the first connector part; one end of the rotating part is provided with a free end, and the other end of the rotating part is used for being connected with the second connector part; the swing driving assembly is arranged on the frame body, connected with the rotating part and used for driving the rotating part to rotate; and the free end is rotationally arranged relative to the bending moment assembly, and the bending moment assembly acts on the free end in the radial direction of the rotating piece and is used for providing torque for deflection of the center shaft of the second connector part relative to the center shaft of the second connector part. Through the technical scheme, the technical problem that a rotary joint test device in the prior art is difficult to meet the performance test requirement of the rotary joint is solved.

The invention discloses a multi-attitude test platform for a quadruped robot, and relates to the technical field of intelligent robot testing, and the test platform comprises a main pedal, a lifting mechanism assembly, a driving mechanism assembly, a driven mechanism assembly and a pressure sensor assembly. A mounting hole is formed in the surface of the main pedal; the lifting mechanism assembly comprises a lead screw servo motor, a lead screw, a guide rail, a sliding plate, a transmission belt and the like. The lead screw servo motor drives the lead screw to be matched with the driven mechanism to achieve pitching motion of the main pedal. The driving mechanism assembly comprises a servo motor, a worm and gear reduction gearbox, a fixing shaft, a right lifting plate and the like. The servo motor drives the worm and gear reduction gearbox to achieve inclined rotation movement of a main pedal. The driven mechanism assembly comprises a guide rail, a sliding table, a driven shaft, a left lifting plate and the like. And the pressure sensor assembly comprises a small top plate, a spring and a pressure sensor and is arranged in the mounting hole. The test platform can simulate slope environments of different angles according to needs, is used for multi-posture static test of the tested quadruped robot, collects change parameter data of standing postures of the quadruped robot in the slope environments of different gradients through devices such as the pressure sensor and a built-in sensor of the robot, and performs multi-posture static test on the quadruped robot according to the change parameter data. Test preparation is made for optimizing and adjusting the standing posture of the quadruped robot in the later period, so that the stable performance of the robot is guaranteed, and the purpose of testing the multiple postures of the quadruped robot is achieved.

The utility model belongs to the field of hypersonic propulsion, particularly relates to a preheated liquid fuel single droplet generation system under a high-speed incoming flow condition, and aims to solve the problem that in the prior art, a system capable of illustrating different broken forms of preheated liquid fuel single droplets and a droplet breaking kinetic model under the high-speed incoming flow condition is lacked. The kerosene instillation test bench comprises a test bench, a high-speed incoming flow generation system and a kerosene instillation controller, the high-speed incoming flow generation system and the kerosene instillation controller are both fixedly arranged on the test bench, and the input end of the high-speed incoming flow generation system is communicated with the output end of the kerosene instillation controller. According to the method, different broken forms of a single droplet of the preheated liquid fuel and a droplet breaking kinetic model under the high-speed incoming flow condition are clarified, the understanding of the physical process of secondary atomization of transverse injection of different preheated liquid fuels under the high-speed incoming flow condition can be deepened, and meanwhile, a reference is provided for engineering application of an engine injection scheme.

The utility model relates to a rain test box convenient to maintain, which comprises a test box and a test bench fixedly arranged at the bottom of the inner cavity of the test box, a spray head assembly is arranged in the test box, the spray head assembly comprises rotating shafts rotationally arranged at the left side and the right side of the inner cavity of the test box, and a semicircular pipe is fixedly arranged between the two rotating shafts. And a plurality of external thread connecting pipes penetrating into the semicircular pipe are fixedly mounted at the bottom of the semicircular pipe. According to the rain test box convenient to maintain, after a product is placed at the top of the test bed, a water pump sucks water through an extraction pipe, the water enters a filter box through a drainage pipe and is purified by a filter assembly, and the water flows into a semicircular pipe through a hard pipe and a folding pipe, is sprayed out from a nozzle of an external thread connecting pipe and is concentrated at the top of the test bed for a waterproof test; the driving unit drives the semicircular pipe to rotate, multi-directional spraying of the product is achieved, the nozzle blocking risk is reduced through the filtering assembly, and the nozzle can be easily rotated, detached and cleaned when blocked.

The invention provides a test bench for acceleration cavity testing. The test bench for accelerating cavity testing comprises a base body, a fixed clamp, a movable clamp and a driving assembly. Wherein the fixed clamp is arranged on the base body, the fixed clamp is provided with a first limiting space matched with the first reference acceleration cavity, and the fixed clamp is used for detachably fixing the first reference acceleration cavity in the first limiting space; the movable clamp is movably arranged on the base body, the movable clamp is provided with a second limiting space matched with the second reference acceleration cavity, and the movable clamp is used for detachably fixing the second reference acceleration cavity in the second limiting space; the driving assembly is arranged on the base body and is in transmission connection with the movable clamp, and the driving assembly is used for driving the movable clamp to drive the second reference acceleration cavity to move relative to the first reference acceleration cavity located on the fixed clamp so as to fix the acceleration cavity to be tested between the first reference acceleration cavity and the second reference acceleration cavity. According to the test bench for the acceleration cavity test, the acceleration cavity test efficiency can be improved.

The invention discloses an automobile transmission shaft bending endurance test device, and belongs to the technical field of automobile part processing, the automobile transmission shaft bending endurance test device comprises a test bench, and the top of the test bench is provided with a horizontally arranged test transmission mechanism; an up-and-down lifting adjusting mechanism, an adjusting driving mechanism, a large-amplitude adjusting mechanism and a small-amplitude adjusting mechanism are arranged in the test bed, the up-and-down lifting adjusting mechanism is located on the inner side of the test bed and located below the test transmission mechanism, and the adjusting driving mechanism is arranged on the up-and-down lifting adjusting mechanism; the large-amplitude adjusting mechanism is arranged on the adjusting driving mechanism, and the small-amplitude adjusting mechanism is arranged on the large-amplitude adjusting mechanism. Through dual-mode adjustment of synchronous stretching and non-synchronous stretching and combined loading of rotation and vertical jumping, full-scene working conditions such as symmetric violent bumping (such as a sandstone road) and asymmetric irregular bumping (such as single-side potholes and steering avoidance) in the automobile running process can be accurately reproduced.

The invention discloses a vibration seeding monomer test bed and a test method. Wherein a rack mounting frame of the seeding single body is fixed with a vibration cross beam, and two ends of a vertical sliding beam are respectively connected with two upright posts of a base frame through a cross beam sliding device; one end of the cross beam electric push rod is connected with the vertical sliding beam, and the other end is fixed with the base frame; one end of the buried electric push rod is fixed with the buried connecting piece of the seeding single body, and the other end of the buried electric push rod is fixed with the base frame; one end of the hanging type electric push rod is fixed with an upper beam of the base frame, and the other end of the hanging type electric push rod is fixedly connected with a soil covering wheel, a limiting wheel and other devices of the seeding single bodies through hanging type steel wires; the soil covering wheels and the limiting wheels of the seeding single bodies are in contact with the conveying belt; the conveying belt is installed on the rack through a belt wheel set and a driving wheel, and the driving wheel is connected with a conveying belt motor. And a vibration sensor is mounted on the seeding single body. The device is used for simulating the field operation environment of the seeding monomer, and further simulating the vibration influence of the field environment and machine motion on the seeding device.

The invention relates to the technical field of fuel nozzle performance testing, in particular to an integrated high-precision fuel flow testing method and detection method.The testing method comprises the steps that a spraying test bed or a nozzle test bed is correspondingly selected based on whether a to-be-tested workpiece tests the spraying angle or not; after the integrated high-precision fuel oil flow testing device is in a reset state, a corresponding motor rotating speed is input to a digital control system based on the calibrated flow of the workpiece to be tested, a plunger pump of a high-pressure oil supply system is started, and oil liquid in an oil tank system is pumped to a corresponding spray test bed or nozzle test bed to run; the actual pressure difference of the workpiece to be measured is collected and transmitted to the digital control system, the actual pressure difference and the target pressure difference are compared, and the actual pressure difference is adjusted; when the preliminarily obtained actual oil flow is larger than a detection threshold value, the actual oil flow corresponding to the current flowmeter is defined as corresponding detection data; and when the preliminarily obtained actual oil flow is smaller than or equal to the detection threshold value, a weighing method is adopted for flow detection.

The application discloses a kind of electric vehicle water-cooled plate performance test platform and data processing method, the test platform includes two circuits of cooling liquid circuit and refrigerant circuit, including heat pump air conditioning system, low-temperature radiator cooling system, data acquisition and control system and water-cooled plate test bench, heat pump air conditioning system includes compressor, condensing / evaporating radiator, four-way valve, electronic expansion valve and plate heat exchanger, and heating and refrigeration are realized by four-way valve Switching;Low-temperature radiator cooling system includes water-cooled radiator, three-way valve and liquid storage tank, water-cooled radiator, three-way valve and liquid storage tank are connected to form cooling liquid circuit and refrigerant circuit is exchanged with cooling liquid circuit by plate heat exchanger, and the performance experiment of low-temperature radiator to water-cooled plate test platform can be realized.This application can simulate the actual operating performance of water-cooled plate on real electric vehicle, can test the heat dissipation and heating capacity of water-cooled plate, and can determine the pressure drop or flow resistance under different flow and different temperature.

This invention relates to the field of research on the operational characteristics of overpressure relief devices, and particularly to an experimental device for measuring the operational characteristics of overpressure relief devices under water hammer conditions. The device includes: a high-pressure air compressor, a frame, a piston accumulator, a quick-opening device, a high-pressure test assembly, and a high-frequency dynamic pressure sensor. This invention enables the measurement of operational characteristics under different pressure rise rate loads caused by water hammer phenomena on a test bench, providing an experimental platform for the research on the operational characteristics of overpressure relief devices under high pressure rise rates. The overall device is simple, quick, and stable. It effectively solves the problem of applying high pressure rise rate loads in current overpressure relief device operational characteristic measurement tests, overcomes the danger of using combustible gas explosions as pressure sources in existing operational characteristic measurement tests, and overcomes the shortcomings of existing test methods, such as long testing times, the need to calculate gas explosion pressure, and the difficulty in accurately controlling the pressure rise rate.

1. The name of the design product: intelligent manufacturing equipment test bench. 2. The use of the design product: intelligent manufacturing equipment test bench for detection. 3. The design points of the design product: in shape. 4. The picture or photo that best indicates the design points: perspective view 1.

The invention relates to a dynamic balancing machine test bench, and relates to the technical field of balancing machines, the dynamic balancing machine test bench comprises a dynamic balancing machine body and a console used for controlling the dynamic balancing machine body, one side of the dynamic balancing machine body is provided with an air pump, the upper end of the air pump is communicated with an air pipe, the air pump is electrically connected with the console, the air pipe is communicated with a flow divider, the flow divider is communicated with a flow dividing pipe, and the flow dividing pipe is electrically connected with the console. A mounting table is arranged on one side of the dynamic balancing machine body, a height adjusting assembly used for changing the height of the mounting table is arranged on the lower portion of the mounting table, an annular rail is fixedly connected to the mounting table, an arc-shaped sliding rail is slidably connected to the annular rail, and a positioning pipe and a fixing assembly used for fixing the positioning pipe to the arc-shaped sliding rail are arranged on the arc-shaped sliding rail. The flow dividing pipe is fixedly connected and communicated with the positioning pipe, and an adjusting assembly used for adjusting the position of the arc-shaped sliding rail is arranged on the mounting table. The method has the effect of improving the detection precision of the dynamic balancing machine.