42results about How to "Guaranteed loading accuracy" patented technology

The invention provides an experimental device for testing adsorption/desorption amounts of gas on carbonaceous shale and adsorption/desorption curves. The device is mainly composed of real triaxial core clamping and compression system, a system pressure sensor, a system temperature sensor, an inlet end high-grade pressure gauge, an inlet end high-precision gas mass flow meter, an outlet high-precision gas mass flow meter, a vacuum pump, a high pressure helium tank, a high pressure to-be-measured gas cylinder, a thermostat, a corresponding pipeline and a valve. A carbonaceous shale test piece is placed in the real triaxial core clamping and compression system. An initial measuring condition of the test piece is set according to a real formation condition. After free pore volume is set, an adsorption/desorption test of the test piece is performed. According to a gas cumulative discharge value and a balanced system pressure value which are measured and recorded by the inlet end high-precision gas mass flow meter or the outlet end high-precision gas mass flow meter end and the system pressure sensor, adsorbed gas volume is calculated so that the isothermal adsorption/desorption curve of the carbonaceous shale test piece is drawn.

The invention belongs to an aircraft strength testing technology and relates to a structural strength test loading device for an aircraft wing-mounted engine. The structural strength test loading device comprises side front loading actuating cylinders, side rear loading actuating cylinders, front actuating cylinders and lower actuating cylinders, and is characterized in that the loading device comprises the two side front loading actuating cylinders, the two side rear loading actuating cylinders, the two front actuating cylinders and the lower actuating cylinders. According to the loading device disclosed by the invention, a course load of the engine is applied through a pair of the actuating cylinders which mutually form the angle, so that the loading device can ensure that the course load can be always positioned along the direction of the axial line of the engine under the condition that the deformation of airfoils occurs during testing; a lateral load of the engine can be applied through the pair of the actuating cylinders which mutually form the angle, so that the loading device can ensure that the lateral load can be always positioned in the horizontal direction under the condition that the deformation of the airfoils occurs; and a hanging lateral load of the engine is applied by the pair of the actuating cylinders which mutually form the angle, so that the loading device can ensure that the lateral load can be always positioned in the horizontal direction under the condition that the deformation of the airfoils occurs. The loading device can ensure the loading precision of the loads of the wing-mounted engine under the condition that the deformation of the airfoils occurs so as to enable a testing check result to be more accurate and reliable.

The invention discloses an indoor available comprehensive tubing string mechanics experiment platform to solve the problem of unable accurate synchronous application of pulling, pressing, bending, twisting and other loads of present indoor experiment devices. The platform integrates loading and test mechanisms of pulling, pressing, bending, twisting and other different loads, and eliminates mutual influences of pulling and twisting combination load in a bearing isolation manner, and a test terminal collects and processes a pulling and twisting load signal in a double-sensor merging output mode. The platform can realize synchronous loading and testing of pulling, bending, twisting and other loads, and allows the real deformation of an oilfield tubing string under a given load condition to be obtained through scaling all parts of the oilfield tubing string in the practical use process.

The invention relates to the field of a biological and chemical machine, and particularly discloses a high-viscosity liquid precise subpackaging device which comprises an electronic control system, an electrical system, a mechanical transmission system and a piston pump, wherein the electronic control system comprises a programmable logic controller (PLC) and a touch control screen; the electrical system comprises a piston servo motor and a rotary valve servo motor; the mechanical transmission system comprises a rolling shaft screw rod, a screw rod sliding block and a concentric shaft; the piston pump is provided with a liquid outlet pipe and a liquid inlet pipe; and a pipe orifice of the liquid outlet pipe is provided with a liquid outlet needle. The high-viscosity liquid precise subpackaging device can be automatically controlled to run by the PLC, can manually change various parameters, and is simple and convenient in operation and high in degree of mechanization. The servo motors are accurate in location and high in accuracy, so that the accuracy is high and the performance is stable when subpackaging is carried out on the liquid. The liquid outlet needle is arranged at a liquid outlet hole, so that the pressure in a pipeline can be reduced; and due to the small-hole design of the needle, the charging and measuring accuracy can be guaranteed. The high-viscosity liquid precise subpackaging device can be used for subpackaging in a laboratory and large-scale industrial charging, and is low in cost and suitable for large-scale popularization.

The invention relates to a planar two-degree-of-freedom high-frequency loading device and testing platform for a ball screw pair. The planar two-degree-of-freedom high-frequency loading device for a ball screw pair comprises a flexible hinge parallel mechanism basic body, a first driving branched chain, and a second driving branched chain. The center of the flexible hinge parallel mechanism basic body is equipped with a rigid moving platform. A first flexible branched chain and a second flexible branched chain are disposed along two vertical directions through the center of the rigid moving platform, and are symmetrically and fixedly connected with the rigid moving platform. A first installing groove and a second installing groove which reach side end faces are disposed on the flexible hinge parallel mechanism basic body along the extending line of the first flexible branched chain and the extending line of the second flexible branched chain, respectively. The first driving branched chain comprises a first driver connector, a first piezoelectric ceramic brake, and a first tension and pressure sensor which are installed in the first installing groove. The second driving branched chain comprises a second driver connector, a second piezoelectric ceramic brake, and a second tension and pressure sensor which are installed in the second installing groove.

The invention, which belongs to the field of aircraft designs, relates to a finite element load application method. The finite element load application method is characterized by comprehensively taking the affection of the simplification or distribution of various loads on calculation results and the difficulty level of loading implementation into consideration, the finite element load application method divides aircraft loads into concentrated loads and distributed loads and divides the distributed loads into subareas; nodes to be loaded are chosen from a finite element model and divided into subareas according to the pattern of the distributed load subareas; the concentrated loads and the distributed loads are respectively applied. When the method is adopted to carry out finite element model loading, the precision of engineering calculation can be met, and moreover, computers can be conveniently used for batch processing.

The invention belongs to the technical field of aircraft strength test loading, and discloses an asymmetric load buffer and a parameter determination method, and the asymmetric load buffer comprises aforce transmission end cover, a locking large nut, an outer cylinder, a locking small nut, a sliding bearing bracket, a locking small nut, a sliding bearing, a large spring, a small spring, a loadingmandrel, a sliding bearing, a sliding bearing bracket and an end cover. Through the application of the invention, the rigidity of the loading system can be reduced, a lag recovery area of the servo loading system is avoided, the loading command curve and the feedback command curve are highly superposed, the loading precision is ensured, and meanwhile, the reversing impact on the loading of a testpiece is avoided. The stroke requirements of actuators of different load levels can be met by adjusting the compression amount of the spring.

The invention provides a loading test device for a rigid main propeller hub connecting piece. The loading test device comprises a propeller hub fake piece, a variable-pitch pull rod loading joint, a propeller blade fake piece, a steel cable, a propeller hub mounting bracket, a waving loading mechanism, a shimmy loading mechanism, a centrifugal force loading mechanism and a variable-pitch pull rod force loading mechanism. According to the fatigue test device and method for the rigid main propeller hub connecting piece, the blade false piece is designed, and the four loading actuators are adopted to apply test loads in four directions, so that the real boundary condition and the loaded state of the rigid main propeller hub connecting piece are simulated, and a real and accurate fatigue test assessment environment for the rigid main propeller hub connecting piece is provided; therefore, the fatigue dangerous part and the corresponding damage mode of the rigid main propeller hub connecting piece can be accurately determined, the fatigue characteristic of the rigid main propeller hub connecting piece is obtained, and an effective test basis is provided for the service life of the rigid main propeller hub connecting piece.

The invention discloses a sliding type loading mechanism applied to an automatic pipettor tip loader, which solves the technical problem of low loading efficiency due to the fact that the whole process of single material feeding, delivery and blanking of a loading mechanism in an automatic pipettor tip loader in the prior art is carried out by loading units alternately. The invention adopts the technical scheme that the sliding type loading mechanism comprises a bottom plate, a stationary block, a slide block, an incoming material position sensor, a first blanking position sensor and a second blanking position sensor, wherein the stationary block is arranged on the bottom plate; the slide block is arranged on the bottom plate in a sliding manner; the stationary block is parallel to the slide block; a feed groove is formed in the stationary block; the incoming material position sensor is arranged above the feed groove in the stationary block; a first blanking groove and a second blanking groove are formed in the stationary block; the first blanking position sensor is arranged above the first blanking groove in the stationary block; and the second blanking position sensor is arranged above the second blanking groove in the stationary block. The mechanism has the advantages that two materials are loaded alternately, gapless acquisition of tips and drippage of the tips are achieved; and the loading efficiency is improved.

The invention relates to a load loading system for a hatch lock reliability testing device and a butterfly-shaped spring assembly selecting method of the load loading system, belongs to load loading technologies of a hatch lock, and aims at solving the problems that a load born by a lock ring changes widely when a load loading spring of a present hatch lock reliability testing device is stretched or compressed. An intermediate joint of a first guide rail is fixedly connected to the middle of the first guide rail, two first slide blocks are arranged at the two sides of the intermediate joint of the first guide rail respectively, and first connecting rods are connected to the slide blocks and a lock ring; a second guide rail is vertical to the first guide rail, and a second slide block, a butterfly-shaped sprig assembly and a load adjusting block sleeve the second guide rail successively; and a load adjusting rod is positioned over the second guide rail. The butterfly-shaped spring assembly is determined by determining an initial elastic coefficient of the spring assembly, establishing an initial function relation between FTH and VHK2, determining a correcting elastic coefficient of the butterfly-shaped spring assembly, and determining the number of spring leaves. The system and method are used for load loading in hatch lock reliability test.

The embodiment of the invention discloses a reagent loading control method and device, computer equipment and a storage medium, and the method comprises the steps: when reagent card swiping operation is detected, obtaining to-be-loaded reagent reference information of a reagent card, and the to-be-loaded reagent reference information at least comprising reagent identification information of at least one bottle of first reagent and a loadable area of the first reagent; the reagent identification information indicating the reagent type and the size of the reagent container; acquiring actual combination information which is input by a user on a preset terminal interface and comprises a first reagent position selected by the user and reagent identification information of a to-be-loaded second reagent input by the user; and determining whether the second reagent is loaded to the first reagent position or not according to the reference information of the to-be-loaded reagent and the actual combination information. By means of the method, whether the second reagent is loaded to the first reagent position or not can be comprehensively judged based on the reference information of the reagent to be loaded and the actual combination information, manual subjective judgment is reduced, reagent loading accuracy is guaranteed, and reagent loading efficiency is improved.

The invention relates to an automobile hub bearing tester. The automobile hub bearing tester comprises a machine body, a main shaft device, an axial loading device and radial loading devices, wherein a main shaft of the main shaft device is horizontally arranged, the two ends in the axial direction are both rigidly connected with test shaft devices, the rotating center line of the main shaft of the main shaft device and the rotating center lines of the test shaft devices coincide, the two test shaft devices are each provided with one radial loading device and a loading body connected with an outer ring of a hub bearing, the loading bodies are provided with loading arms stretching away from the test shaft devices in the radial direction, the center lines of the radial loading devices are perpendicular to the center lines of the test shaft devices, the loading ends of the radial loading devices are connected with the loading bodies, the axial loading device is parallel to the main shaft of the main shaft device and is located between the two radial loading devices, and the two loading ends of the axial loading device are correspondingly connected to the loading arms of the loading bodies. By means of the structure, the automobile hub bearing tester has the advantages that structural design is reasonable, the stress state and size of the hub bearing can be simulated realistically, and detection is accurate and reliable.

The application relates to a hydraulic loading system. The hydraulic loading system comprises a loading platform and at least two hydraulic loading components used for exerting pressure onto the loading platform, as well as a control component, wherein the control component adjusts the pressure output by each hydraulic loading component based on the corresponding relationship between the pressure output by the hydraulic loading components and displacement of the position, at which the hydraulic loading components on the loading platform exert pressure on the loading platform and a predetermined point. By adoption of the hydraulic loading system, the hydraulic loading components are prevented from action of a lateral force, and accordingly, abrasion of the hydraulic loading components is avoided.