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269results about How to "High loading accuracy" patented technology
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High crustal stress genuine three-dimensional load model trial system
The invention relates to a true three-dimensional loading model experiment system for highland stress, comprising an intelligent hydraulic control system, a high-pressure loading system and a counterforce device system, wherein, the high-pressure loading system is arranged in the counterforce device system; an intelligent hydraulic control test bed of the intelligent hydraulic control system is connected with the high-pressure loading system through a high-pressure oil pipe; the high-pressure loading system comprises a jack and loading plates; one end of the jack is connected with the loading plates; the other end of the jack is connected with the counterforce device system; and six loading plates connected with the jack respectively cling to front, rear, left, right, upper, lower side surfaces of a trial model. The system has the advantages of synchronous and independent highland stress loading, high loading automation degree and loading accuracy, more loading functions, the realization of the axial loading opening of a cavity, high rigidity of the loading system, good integral stability, simple and convenient operation and so on. The system can be widely used in deep underground cavity model experiment and research in engineering fields such as hydroelectric power, transportation, energy, mine, national defense and so on.
Owner:SHANDONG UNIV
Comprehensive performance test bench for planetary roller screw
InactiveCN105890895AReal-time detection of rotation angleReal-time detection timesMachine gearing/transmission testingTest performanceGrating
The invention discloses a comprehensive performance test bench for a planetary roller screw. A driving assembly provides power for the planetary roller screw; a test assembly is used for mounting a planetary roller screw of a different model; a hydraulic loading assembly is adopted to carry out dynamic and static loading on a planetary roller screw nut, load borne by the planetary roller screw during actual work is simulated, and a force closed loop is adopted to ensure accuracy of the loading force. The test bench is provided with a torque sensor, an angle encoder, a circular magnetic grating, a grating ruler, a LVDT, and a force sensor. Measurement on torque, an angle, displacement and force is realized through the sensor. Through analyzing the test data, test on performance of the position precision, the speed, the acceleration, the transmission efficiency, the transmission clearance and the axial stiffness of the planetary roller screw of the different model in the load state can be completed. The test bench has the advantages of simple and flexible structure, thorough and accurate test performance parameters, high loading precision and strong test scalability.
Owner:NORTHWESTERN POLYTECHNICAL UNIV
Electronic control of vehicle air suspension
InactiveUS20060267296A1Prolong lifeReduce the amount requiredSpringsResilient suspensionsMotion detectorVehicle frame
A system is provided for use on large vehicles of the type wherein the vehicle frame is supported on vehicle axle assemblies through air bags, and each air bag has a lower end coupled to the lower end of an arm such as a swing arm whose upper end is pivotally mounted on the frame. The height of the air bag is sensed by a pair of tilt sensors, sensing tilt of its location with respect to gravity, and the difference in tilt indicates air bag height. The output of the tilt sensors may be filtered, and a motion detector allows rapid filling or dumping of air bags independent of filtering of tilt sensor signals. Control of the vehicle air suspension can also be based upon inputs from one or more air bag pressure sensors.
Owner:BARKSDALE
Load follow-up loading system for plane flap reliability test
ActiveCN104048874ARealize closed-loop controlReduce distanceMachine part testingStrength propertiesEngineeringAirplane
The invention relates to a load follow-up loading system for plane flap reliability tests. The system comprises a bearing wall. The system is characterized by further comprising a support component, a load loading adjusting unit and a load detection and adjusting unit, wherein a flap is mounted on a wing; the root of the wing is mounted on the bearing wall; the support component comprises two vertical columns and a transverse beam for supporting the load loading adjusting unit and the load detection and adjusting unit; the load loading unit comprises a moment motor and a steel rope; the moment motor is arranged on the support component and is used for exerting an action force on the flap; the steel rope is connected with the moment motor; the load detection and adjusting unit comprises an angle sensor, a sliding track component and a pulley component. A plurality of loading points are arranged on the surface of the flap, one loading point corresponds to one set of loading system, the size, the direction and an equivalent action point of real-time flap surface aerodynamic force can be simulated.
Owner:NORTHWESTERN POLYTECHNICAL UNIV
Contact-type reliability test bed capable of conducting mixed loading on electric main shaft
The invention discloses a contact-type reliability test bed capable of conducting mixed loading on an electric main shaft. The test bed is composed of the electric main shaft, a connecting shaft unit, a torque loading device, a radial force electromagnetic loading device, an axial force electromagnetic loading device and a swing arm device. The test bed can load an axial force, a radial force and a torque on the electric main shaft at the same time, control the magnitudes of the three forces in a coordinate mode to simulate cutting forces in different magnitudes and different directions, really and reliably simulate the cutting forces of the electric shaft in practical working conditions, and provide a test foundation for reliability acceleration tests of the electric shaft.
Owner:JILIN UNIV
Intelligent NC super high pressure true 3D uneven loading and unloading and pressure stabilizing model test system
ActiveCN108124460AHigh loading accuracyLong stabilization timeUnderground chambersMaterial strength using tensile/compressive forcesUltra high pressurePilot system
Owner:SHANDONG UNIV
Dynamic loading device for high-speed motorized spindle
ActiveCN102426097ARestoration of different types of stress situationsHigh vibration frequencyMachine gearing/transmission testingCouplingDynamometer
The invention discloses a dynamic loading device for a high-speed motorized spindle. The device comprises a supporting part and a loading part, wherein the supporting part comprises a spindle base, an axial loading bracket, a radial loading base plate and a dynamometer base. The spindle base comprises a spindle base plate, an adjusting base plate and a clamping mechanism. The loading part comprises a radial loading mechanism, an axial loading mechanism, a torque loading mechanism, a loading rod and a bearing unit. The torque loading mechanism comprises a power dynamometer and a high-speed spring tube coupling. The adjusting base plate and the clamping mechanism are overlapped on the spindle base plate and are fixedly connected with each other; the power dynamometer is fixed on the dynamometer base and is connected with the right end of the loading rod through the high-speed spring tube coupling; the left end of the loading rod is connected with the right end of a detected high-speed motorized spindle which is arranged in the clamping mechanism. The bearing unit is sleeved on the loading rod; the radial loading mechanism is arranged on the radial loading base plate and is positioned just below the bearing unit; and one end of the axial loading mechanism is arranged on the axial loading bracket, and the other end of the axial loading mechanism is in contact connection with the bearing unit.
Owner:JILIN UNIV
Piezoelectric film cantilever beam type micro-force sensor micro-force loading device
InactiveCN101059381AHigh loading accuracyControl preload forceForce measurement using piezo-resistive materialsElectricityMicrometer
The invention relates to a micro force load device of piezoelectric film suspension beam micro force sensor, belonging to sensor and test technical field, used for the static and quasi-static test and label of piezoelectric film suspension beam micro force sensor, wherein a micro force load device is composed of a one-dimension micro displacement table, a two-dimension micro displace table, a piezoelectric dual-crystal micro force generator, and a damping device. The one-dimension micro displacement table is composed of an X-axis micrometer element and a one-dimension micro displacement table base. The two-dimension micro displace table is composed of a Y-axis micrometer element, a Z-axis micrometer element, a two-dimension micro displacement table base, a support plate and a socket head cap screw. The piezoelectric dual-crystal micro force generator III is composed of a micro probe, a fixing block, two piezoelectric ceramic plates, an aluminum plate, a clamping plate and a socket head cap screw. The invention has simple and reliable structure, easy operation, and improved resolution of micro force loading system, to resolve the problems as instability and hard control of micro Newton force load.
Owner:DALIAN UNIV OF TECH
Testing system of cutting force and torque loading reliability of numerical control turret power knife rest
The invention discloses a testing system of cutting force and torque loading reliability of a numerical control turret power knife rest, which comprises a supporting part and a loading part. The supporting part comprises a numerical control turret power knife rest supporting part, a cutting force loading supporting part and a torque loading supporting part. The numerical control turret power knife rest supporting part is fixed at left side below a floor iron, and the torque loading supporting part is located at the right side below the floor iron. The loading part comprises a dynamic cutting force loading part, a cutting torque loading part and a loading bar. The dynamic cutting force loading part is connected with a rotating plate in the cutting force loading supporting part through a 2# sliding plate. The cutting torque loading part comprises an eddy current dynamometer and an elastic coupler. The eddy current dynamometer is installed on a 3# pedestal, the output end of the eddy current dynamometer is connected with the elastic coupler, the elastic coupler is connected with a right end key of the loading bar sleeved with a bearing loading unit, and the left end of the loading bar is fixedly connected with the right end of a power knife seat on the measured numerical control turret power knife rest.
Owner:JILIN UNIV
Loading system and method for airplane structure test
The invention belongs to an airplane testing technology and relates to a loading system and method for an airplane structure test. The loading system for the airplane structure test comprises a loading force-bearing system, a loading cross beam, a guide fixed pulley, a movable pulley set, a loading connecting member, a first force sensor, a second force sensor and a loading actuating cylinder, wherein the loading cross beam is arranged on the loading force-bearing system, the guide fixed pulley is fixed on the loading cross beam, the movable pulley set is arranged on the top end of the loading actuating cylinder, the loading actuating cylinder is fixed on a force-carrying terrace, and the loading connecting member surrounds the movable pulley set and the guide fixed pulley. According to the invention, a large-deformation part of a structure in an airplane structure static and fatigue test is loaded; by using a method for increasing a load by the actuating cylinder by the small-travel actuating cylinder, the retracting travel of a loading device is reduced; and under the condition of large deformation of the structure, the accuracy of deflection angle loading is ensured.
Owner:CHINA AIRPLANT STRENGTH RES INST
Elastic element creep testing method and tester thereof
InactiveCN1553162AReliable loadingHigh loading accuracyMaterial strength using tensile/compressive forcesHinge angleTest sample
In the present invention, a hinging point of lever is set on framework, one end of lever crossbeam is connected to hinging point and its loading crossbeam can be swung upwards and downwards around framework hinge, another end of lever is hinged with loading weight which is hinged on lever crossbeam through a movable block set and wirerope, movable block set can be two set, another loading application point between hinging point and weight hinged point is on lever crossbeam, adjustable guide bar is connected to loading application point and loading force from weight loading is applied to test sample through adjustable guide bar.
Owner:ZHUZHOU TIMES NEW MATERIALS TECH
Stiffened wall plate compression stability test support fixture and end support coefficient test method
ActiveCN102288483AShorten the test cycleHigh loading accuracyMaterial strength using tensile/compressive forcesJet aeroplaneEngineering
The invention belongs to the strength testing techniques of airplanes, and relates to a testing method for a supporting coefficient of a loading end in a compression stabilization experiment of a wallboard. A supporting clamp for the compression stabilization experiment of a reinforced wallboard comprises a hinged support clamp with a supporting coefficient of 1, a simple support clamp with a supporting coefficient between 1 and 4, and a fixed support clamp with a supporting coefficient of 4; a rectangular groove is processed on one side of the plane of an articulation block; and the end socket of a test piece is directly embedded in the rectangular groove. In the invention, the design of the test piece is given first; then a foil gauge is arranged, and the test piece and the clamps are mounted; a compression load is loaded hierarchically, and the load-stress is tracked and measured; when a curve knee point is discovered, the load is unloaded, and the load at the knee point is recorded; the load at the knee point is led in a theoretical formula to obtain the supporting coefficient; and finally, through increasing H or increasing clamping force, the supporting coefficient is adjusted. The method has the characteristics of simple operation, high loading precision and low cost.
Owner:CHINA AIRPLANT STRENGTH RES INST
Load simulator based on series-parallel mechanism
InactiveCN102175441AImprove general performanceHigh loading accuracyMachine part testingMechanical engineeringInstrumentation
The invention discloses a load simulator based on a series-parallel mechanism, which consists of an in-series assembly (1), an in-parallel branched-chain assembly A (2), an in-parallel branched-chain assembly B (3), an in-parallel branched-chain assembly C (4) and a static platform assembly (5). Connecting rods at the upper ends of the in-parallel branched-chain assembly A (2), the in-parallel branched-chain assembly B (3), the in-parallel branched-chain assembly C (4) are installed on the static platform assembly (5); elastic plates at the lower ends of the in-parallel branched-chain assembly A (2), the in-parallel branched-chain assembly B (3), the in-parallel branched-chain assembly C (4) are installed on the sleeve of the in-series assembly (1); the motor base of the in-series assembly (1) is installed on the static platform assembly (5); and the sleeve of the in-series assembly (1) is respectively connected with the elastic plates of the in-parallel branched-chain assembly A (2), the in-parallel branched-chain assembly B (3), the in-parallel branched-chain assembly C (4). The load simulator is used for performance test for instruments and equipment; in addition, the load simulator has the ability of combined loading of loads in various directions, and the simulator is realized by the series-parallel connection of in-series mechanisms and in-parallel mechanisms.
Owner:BEIHANG UNIV
Multifunctional road detection device and test method for tires
InactiveCN104729863ARealize online detectionSolve environmental problemsVehicle tyre testingRoad surfaceMechanical property
The invention relates to a multifunctional road detection device and a test method for tires. Two suspension systems and two tire steering mechanisms of the multifunctional road detection device are arranged on a frame and are respectively independently connected with the tested tires on two sides of the multifunctional road detection device, so that the tires can be independently steered and can be adjusted in internally gathered or externally scattered states, and lateral inclination angles of the tires can be adjusted. The multifunctional road detection device and the test method have the advantages that data of rotation angles, lateral force, longitudinal acceleration, lateral acceleration and the like of the tires can be acquired by various relevant sensors during driving, so that mechanical properties of the tires under on-site road conditions can be detected; the problem of difficulty in simulating actual service road surfaces by existing indoor detection devices for tires and problems of unbalanced force under lateral deviation and lateral rolling working conditions and single detection working conditions of existing outdoor detection devices for the tires can be solved; the multifunctional road detection device is simple in structure and easy to control and adjust.
Owner:JILIN UNIV
Visual physical experimental system and method for rock hydraulic fracturing plane problem
ActiveCN111223376AMonitor stressMonitoring FeaturesGeothermal energy generationEducational modelsFracturing fluidHydraulic fracturing
The invention discloses a visual physical experimental system and a visual physical experimental method for a rock hydraulic fracturing plane problem. The visual physical experimental system comprisesa crustal stress loading and control system, a hydraulic servo pump pressure system, a crack surface observation system, and an internal deformation and stress monitoring system, wherein the crustalstress loading and control system is used for applying confining pressure to s sample to simulate reservoir crustal stress; the hydraulic servo pumping system is used for pumping fracturing fluid intothe sample; the crack surface observation system is used for monitoring and recording a crack dynamic evolution process in the fracturing process and analyzing and processing the crack evolution process; and the internal deformation and stress monitoring system is used for monitoring an induced stress evolution rule and sample deformation characteristics in the sample in the hydraulic fracture propagation process. The visual physical experimental system and the visual physical experimental method can solve the problems existing in the rock hydraulic fracturing physical experiment, and play anirreplaceable important role in discovering a new multi-cluster fracturing phenomenon and revealing the inter-fracture rock mechanical response and competition mechanism.
Owner:SHANDONG UNIV
Friction torque measurement apparatus of horizontal bearing
InactiveCN102519639AAvoid eccentric load vibration problemsAppropriate to the actual working conditionsWork measurementTorque measurementFriction torqueElectric machine
The invention relates to a friction torque measurement apparatus of a horizontal bearing. A velocity sensor is arranged on a main shaft and a rotating speed is read by a digital indicator. An input terminal of a data collection card is connected with a force transducer by a strain gauge; the data collection card is installed in a main board of a PC machine; and the main board is connected with a display. The main shaft is arranged horizontally; one end of the main shaft is provided with a bearing replacing sleeve; and the other end of the main shaft is connected with a motor main shaft. A tested bearing is arranged in the bearing replacing sleeve; and an inner ring is provided with a force transmission rotary table that is connected with the force transducer by a dowel bar. A load output bulb of an axial loading apparatus is contacted with a vertical point of a table surface of the force transmission rotary table; and a load output terminal of a radial loading apparatus and an outer peripheral surface of the bearing replacing sleeve are mutually compacted and rolled. According to the invention, the apparatus employs a horizontal structure; and loading at two directions can be realized simultaneously. Therefore, an actual working condition of a bearing can be simulated approximately; and a problem of main shaft offset load vibration due to a belt drive mode of the main shaft can be solved. Besides, the apparatus has advantages of simple structure and strong practicality.
Owner:HENAN UNIV OF SCI & TECH
Large-scale missile engine six-component dynamometry and calibrating device
ActiveCN104111138AMeasuring range can be changedReduce volumeMeasurement of force componentsForce/torque/work measurement apparatus calibration/testingFixed frameEngineering
A large-scale missile engine six-component dynamometry and calibrating device. Four force transmission assemblies are vertically mounted between a fixed frame and a floating frame and are arranged in a square shape. The other four force transmission assemblies are respectively fixed to the floating frame and the fixed frame though upper and lower support frames. Axes of the four force transmission assemblies are installed horizontally relative to the floating frame, and the installation positions are parallel to four edges of the above square shape. Four force generators are vertically installed on the fixed frame and the floating frame, the other four force generators are respectively horizontally fixed between the floating frame and the fixed frame through the support frames, and the installation positions are respectively parallel to four edges of the above square shape. During calibration, force generated by the force generators is transferred to a working force sensor through the floating frame, and calibration is realized according to information measured by the working force sensor. During dynamometry, the force generators do not work, measured force is transferred to the working force sensor through the floating frame, and force and moment which need to be measured are obtained according to information measured by the working force sensor.
Owner:CHINA ACAD OF AEROSPACE AERODYNAMICS
Concrete test loading device and test method under load and multifactor coupling
InactiveCN102778389ASimple structureEasy to operateMaterial strength using repeated/pulsating forcesCouplingEngineering
The invention aims to provide a concrete test loading device and a test method under load and multifactor coupling. The concrete test loading device comprises a press machine, a fixture, a sensor component and a test piece box, wherein a concrete test piece and the sensor component are mounted in the fixture; the fixture is mounted in the press machine; and the test piece box is sleeved on the exterior of the press machine. According to the concrete test loading device and the test method, the structure is simple, the operation is convenient, real working conditions of a concrete member under the combined action of stress and chemical erosion, drying and watering cycle or freezing and thawing cycle in an actual project can be simulated, so that data measured in a laboratory is enabled to have high value of reference on projects.
Owner:三亚哈尔滨工程大学南海创新发展基地
Method and system for transporting and loading bulk materials in storage yard
ActiveCN101786553ANo splashHigh measurement accuracyWeighing apparatus for continuous material flowLoading/unloadingTransport systemUnderground tunnel
The invention particularly relates to a method and a system for transporting and loading bulk materials in a storage yard, which are suitable for bulk material accurate loading of railways, public roads and ships. The invention comprises a storage yard transporting system, a belt transport system and an accurate and rapid quantitative loading system. The invention provides an economical and effective transporting and loading system for bulk materials in a storage yard, which has the following advantages: 1) the storage yard transport system combing a disc vibrating feeder with a low clearance flow control gate is adopted, thus greatly lowering the upper height of an underground tunnel and improving the capability of transporting the materials in the storage yard; 2) the accurate and rapid quantitative loading system is adopted, thus having the characteristics of rapid loading speed, high loading precision and high automation degree; and 3) a four-roller belt weigher is adopted, thus realizing the linkage of the storage yard transport system, the belt transport system and the accurate and rapid quantitative loading system effectively and greatly improving the operation efficiency of the system.
Owner:BIRTLEY TIANJIN IND EQUIP
Mask loading technology
ActiveCN101067727AReduce mistakesHigh loading accuracySemiconductor/solid-state device manufacturingPhotomechanical exposure apparatusProduction rateEngineering
The invention discloses a mask plate loading technology. It includes the following steps: taking plate from the bank; rough pre-aiming; mask plate connecting; fine pre-aiming. The precision of invention can reach that x direction minus or plus 1um, y direction minus or plus 1um, rz direction minus or plus 0.05mrad. Meanwhile, the fine pre-aiming can be reduced from traditional 3-5 times to 1 time, which can greatly increase pre-aiming efficiency and production rate.
Owner:SHANGHAI MICRO ELECTRONICS EQUIP (GRP) CO LTD
Wafer polishing device and method
InactiveUS8210905B2Reduce loadLower areaEdge grinding machinesPolishing machinesEngineeringMechanical engineering
Disclosed herein is a wafer polishing device including: an abrasive member driving device adapted to run a belt-like abrasive member in a direction crossing an outer circumferential end-edge of a wafer which is a wafer to be polished while bringing a belt-like abrasive member into contact with outer circumferential end-edge of the wafer, the abrasive member having non-abrasive sections disposed on both sides of an abrasive grain section; and a guide member having two guide surfaces shaped to conform to the outer circumferential end-edge of the wafer, the two guide surface being adapted to press, from rear sides of the non-abrasive sections, the respective non-abrasive sections of the abrasive member run by the abrasive member driving device.
Owner:SONY CORP
Reciprocating type micro-friction abrasion testing machine
ActiveCN103308407ALarge amplitudeIncrease amplitudeInvestigating abrasion/wear resistanceSignal conditioningDesign testing
The invention discloses a reciprocating type micro-friction abrasion testing machine and belongs to a micro-friction and abrasion testing device. The testing machine comprises a bottom plate, and a bracket, a driving device, a loading device, a positioning and clamping device and a signal conditioning and data acquisition device which are arranged on the bottom plate, wherein the bracket at least consists of two side plates which are longitudinally fixed on the bottom plate; a lower sliding rail seat and a top cylinder seat are at least arranged between the two side plates. An exciter serves as a power source, the equipment is small in size and has high driving force and wide amplitude and frequency variation range, the signal is provided by a signal generation card, multiple driving signals are provided, the frequency and the amplitude are convenient to adjust, and the testing machine is easily controlled by a computer program; meanwhile, a clamp system for a fixation test is simple in structure, reliable in clamping and convenient to mount, and tests in multiple friction pair contact forms can be realized by replacing the clamp. The designed testing machine is high in precision and convenient to operate and provides a reliable experimental instrument for research of micro abrasion.
Owner:NANJING BIO INSPIRED INTELLIGENT TECH
Rudder load simulator not generating surplus torque
ActiveCN105632276AHigh loading accuracyHigh accuracy of moment loadingCosmonautic condition simulationsSimulatorsDrive motorTorque sensor
The invention discloses a rudder load simulator not generating surplus torque, which belongs to the technical field of aerodynamic load simulation of an aircraft. The simulator comprises a sliding block driving motor fixed on a working table surface via a supporting table, a screw rod guide rail, a sliding block moving on the screw rod guide rail after a driving instruction of the sliding block driving motor is received, a torsion spring, an inertia disk, a speed reducer, a torque sensor, a lower computer controlling the sliding block driving motor, and an upper computer communicating with the lower computer, wherein the torsion spring is in rigid connection with the output shaft of a rudder engine room; and the torque sensor is in rigid connection with the output shaft of the rudder engine room. A loading instruction is tracked in a mode of changing the torsional rigidity of the torsion spring, and thus the surplus torque caused when the output shaft of the rudder engine room and the output shaft of a loading motor are coupled due to active rudder motion can be eliminated from the principle.
Owner:南京夸特机电科技有限公司
Testing device for implementing main torque and vibrating torque to high speed rotary main shaft
ActiveCN101368874AMeet the requirements of torque fatigue testSignificant technological progressMachine bearings testingDamping torqueMobile end
The invention discloses an intensity test device which enables the main torque and the vibration torque of a high-speed rotary spindle to be loaded; the test device mainly structurally comprises a device rack, a main torsion beam and a reverse torsion beam which are fixedly connected with the rotary spindle arranged on the rack, at least a pair of main torsional actuating cylinder mechanisms with the bearing end fixed on the device rack and the action force of the mobile end twisted with the torsion beams forming the main torsional couple, at least a pair of vibration actuating cylinder mechanisms with the action force forming the vibration torsional couple, at least a pair of elastic reverse torsional actuating mechanisms with the reverse action force forming the reverse torsional couple, as well as a hydraulic servo system which controls the movement of the actuating cylinder mechanisms. The invention breaks through the torque load mode of the high-speed rotary spindle test device in the prior art and can completely and really simulate the main torque and vibration torque load borne by the high-speed rotary spindle during the running process so as to solve the problem of difficult composite load of the main torque and the vibration torque. The invention also has the advantages of high load accuracy, low manufacturing cost, small maintenance workload and long service life.
Owner:CHENGDU ENGINE GROUP
Mechanical high temperature creep testing machine capable of realizing automatic precise loading
InactiveCN109211684ATest creep limitHigh loading accuracyMaterial strength using tensile/compressive forcesMaterial strength using repeated/pulsating forcesManufacturing technologyLeveling mechanism
The invention discloses a mechanical high temperature creep testing machine capable of realizing automatic precise loading, belongs to the field of instruments of material science and machine manufacturing technologies and aims at solving the problems that when the existing mechanical creep testing machine employs a manual weight loading mode, cyclic load loading cannot be realized in the manual loading mode, when load is relatively high, the loading is relatively slow, labor intensity is relatively high, moreover, the load cannot be loaded continuously, and precision is relatively low. The mechanical high temperature creep testing machine is composed of a rack, a lever and connection mechanism, a weight automatic loading device, a rider precise fine-adjustment device, a lever self-leveling mechanism, a clamp and deformation measurement mechanism and a heating temperature control mechanism. Under the control of a control system, weight automatic loading and rider precise fine-adjustment can be realized, self-leveling can be carried out by a lever, and the problems that the existing manual loading mode is slow in loading and the cyclic load loading cannot be realized are solved; andmoreover, according to the mechanical high temperature creep testing machine, in a weight and rider combined loading mode, the continuous loading can be realized, so precision is relatively high.
Owner:JILIN UNIV
Improved skip weight-fixed loading equipment
ActiveCN102910459AReduce distractionsAvoid frequent replacementLoading/unloadingElectricityHydraulic pump
The invention discloses improved skip weight-fixed loading equipment, which belongs to the technical field of weighing. A sector gate is mounted at an discharge port of a weight-fixing hopper; a weighing sensor is mounted at the bottom of the weight-fixing hopper; an sector gate oil cylinder is welded on the side wall of the weight-fixing hopper; the sector gate is connected with the sector gate oil cylinder; a coal level meter is mounted in a surge bunker; the discharge port of the surge bunker is positioned at the bottom of the bunker; a flat gate is mounted at the discharge port and is connected with a flat gate oil cylinder; the surge bunker is positioned right above the weight-fixing hopper; counterweight lifting oil cylinders are mounted below the two side walls of the weight-fixing hopper respectively; the oil paths of the flat gate oil cylinder, the counterweight lifting oil cylinders and the sector gate oil cylinder are connected with a hydraulic pump station; the coal lever meter, the weighing sensor, a belt conveyor and the hydraulic pump station are electrically connected with a controller in a lifting control chamber. The improved skip weight-fixed loading equipment has the advantages of high coal loading precision, strong reliability, avoidance of frequent exchange of the weighing sensor and reduction in maintenance cost.
Owner:XUZHOU WUYANG TECH
Elastic load application device for steering engine
ActiveCN104048840ALarge loading rangeHigh loading accuracyStructural/machines measurementControl engineeringTorque sensor
The invention discloses an elastic load application device for a steering engine. The elastic load application device for the steering engine comprises a table-type stage installation platform formed by a support combination, uprights and an installation board. A guide board is fixed to the installation board through a plurality of screws. An installation frame, an installation disc and a support are sequentially clamped to the installation board through screws along the guide board. The steering engine is fixedly assembled on the installation frame. One end of a torsion bar is clamped to a clamping groove in the top end of the support. A pressing board is symmetrically arranged on the support through two screws at the upper end of the clamping groove, an output shaft of a torque sensor is clamped to the other end of the clamping groove, and effective clamping is achieved. The elastic loading torque of the elastic load application device for the steering engine is adjustable, the elastic load application device for the steering engine can be used for elastic load application of various steering engines with different output torques, and the elastic load application device for the steering engine has the advantages of being high in loading accuracy, large in load range, simple and effective in the clamping process, convenient to use, high in loading speed, high in reliability and the like.
Owner:HUBEI SANJIANG AEROSPACE HONGFENG CONTROL
High-temperature high-stress true triaxial test device and method
PendingCN111426575AEvenly heatedEasy to put inMaterial strength using tensile/compressive forcesPrincipal stressWorking temperature
The invention relates to the technical field of rock mechanics and engineering, in particular to a high-temperature high-stress true triaxial test device and method. The high-temperature high-stress true triaxial test device comprises a heating box, a loading bin, a clamping device, a cooling assembly, a pressure head assembly, a hydraulic lifting rod, a first large main stress actuator, a secondlarge main stress actuator, a first middle main stress actuator and a second middle main stress actuator. According to the high-temperature high-stress true triaxial test device, a rock mechanical test of true triaxial test equipment under a high-temperature condition is realized; the heating box is arranged in the clamping device, the real condition of the rock test piece at high temperature canbe simulated, the rock test piece can be uniformly heated, the clamping device can move up and down relative to the loading bin, the test piece bearing through hole is formed in the horizontal direction so that the rock test piece can be conveniently placed into the heating box, the working temperature of the actuator can be reduced by arranging the cooling assembly, the loading precision is improved, and then the authenticity and accuracy of test data are improved.
Owner:NORTHEASTERN UNIV LIAONING
Servo feeding system reliability testing device and method
ActiveCN107728606AHigh or low reliabilityReliable test resultsProgramme controlComputer controlNumerical controlProximity sensor
The invention discloses a servo feeding system reliability testing device and method. The problem that a reliability testing device and method do not have the simulation numerical control machine tooldouble screw synchronous drive servo feeding system loading function is solved. The device comprises a double screw synchronous drive servo feeding system, a loading system, a detection system and acontrol system; the double screw synchronous drive servo feeding system is installed on a foundation through a tool body platform, the loading system is installed on the tool body platform through a servo manifold block support and a servo oil cylinder support, the loading system is connected with a working table installed on the tool body platform through a floating connector, and a first displacement sensor, a second displacement sensor, two pressure sensors, a first proximity sensor, a second proximity sensor and a laser interferometer in the detection system are installed on the tool bodyplatform and the foundation at the left side of the tool body platform; the control system is installed on the foundation at the upper right of the tool body platform through an operation desk. The invention further provides the testing method.
Owner:JILIN UNIV
Large six-component measurement and angle-variable support device
ActiveCN103983393AQuick responseFlexible control methodEngine testingMeasurement of force componentsIn situ calibrationElectrical and Electronics engineering
A large six-component measurement and angle-variable support device comprises a base, a six-component measurement and in-situ calibration device, an angle-variable device and locking devices. The six-component measurement and in-situ calibration device is arranged on the base. The angle-variable device is arranged on the six-component measurement and in-situ calibration device. The locking devices are located on the two sides of the angle-variable device. Before test, an engine is arranged on the angle-variable device, and initial calibration is conducted through the six-component and in-situ calibration device; after calibration is completed, the locking devices and an upper platform of the angle-variable device are locked and fixed, and impact loads borne by the engine when a high altitude flow field is established in the initial stage of the test are transmitted outward so that the six-component measurement and in-situ calibration device can be protected against damage; after the flow field is stabilized, rapid unlocking is achieved between the locking devices and the angle-variable device, the angle-variable device is rotated by different angles according to the requirements of the test, and force and torque of the engine at different angles are tested through the six-component measurement and in-situ calibration device.
Owner:CHINA ACAD OF AEROSPACE AERODYNAMICS
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