32results about How to "Save test site" patented technology

The invention is concerned with test method for large windlass before leaving factory. It adopts two windlasses to carry the draw loading test and it will carry all tests according to the provision, such as static load, dynamic load, rating speed and braking capability. Put one tested windlass and one load windlass face to face and connect the two roll canisters of windlass with steel wire. The pull of steel wire is the internal force of windlass while the windlass does not need to be fixed with the ground. Add middle hydraulic pressure oil jar support equipment between the two tested windlasses to adjust the pull of two steel wires. The invention only uses the drive system of windlass without adding expert test equipment and solves the loading course test problem to large and heavy windlass to save lot of investment and test field. The type and test method of large windlass fit for test to double uniting roll canister, single roll canister and all kinds of roll canister.

The invention relates to a high-speed train-tunnel aerodynamic characteristic movable model experiment system which comprises an air cannon launching device (6), a train model (1), a tunnel model (2) and a guide rail (3) in the tunnel model (2); the section of the cannon tube (4) of the air cannon launching device (6) is in the shape of a gate arch, the shape of the bottom (3') thereof is the same with the shape of the guide rail (3) in the tunnel model (2), and the bottom (3') and the guide rail (3) in the tunnel model (2) are connected into an integrated structure; and the section of the guide rail (3) is in an I-shaped structure, the middle at the bottom of the train model (1) is matched with the I-shaped structure of the guide rail (3), and the train model (1) is embedded on the guide rail (3) in a sliding mode. Through the system, the train model stably runs on the guide rail, the train model has large size and is more approximate to the real state of train running, and the aerodynamic characteristic of a train running in a tunnel can be better simulated and researched.

The invention relates to a measuring device and particularly a device for determining collapsibility coefficient of collapsible loess in the field. The device is characterized in that a top plate and a bottom plate are integrally connected through a rib plate, the top plate and the bottom plate are in parallel with each other and holes for marking points are evenly distributed on the bottom plate. When the technical scheme is used for conducting a simulated immersion test in the field to be test, the device has the advantages of small test field, short test cycle, convenience in use and the like. The test result can really reflect the collapsibility coefficient of the collapsible loess in the tested field. The engineering cost and the test expense can be saved.

The invention discloses a method for testing mechanical parameters of stone by using a center anchored bearing plate. The bearing plate is different from common bearing plates for an anchor rope or rod is pre-arranged in the stone soil in the center of the bearing plate. In test, a pressure needed by the test is applied onto the bearing plate by a hollow jack or prestressed tensioning equipment. According to research, when the length of the non-anchored section of the anchor rope or rod is more than two times greater than the diameter of the bearing plate, the mechanical effect exerted by the anchored section of the bearing plate on the bearing plate cannot neglected, so the bearing plate is equal to common bearing plates. Compared with common bearing plate method, the method has the advantages of compact test system, small land occupation, simplicity in test equipment, convenience in installation, low cost and short construction period.

The invention belongs to the aviation and airspace engine test technology field and especially relates to an airspace-engine test-bed long-range exhaust system. The system comprises a water vapor generator, an alcohol supply system, a liquid oxygen supply system, a softened water supply system, a plasma igniter, a gas distribution system and a steam ejector system. The water vapor generator comprises a straight tube and four medium pipelines installed on the straight tube. The four medium pipelines comprise an alcohol pipeline, a liquid oxygen pipeline and two softened water pipelines. A top center of the straight tube is provided with the plasma igniter. The alcohol pipeline of the four medium pipelines is connected to the alcohol supply system. The liquid oxygen pipeline is connected to the liquid oxygen supply system. The two softened water pipelines are connected to the softened water supply system. A lower end of the straight tube is connected to the steam ejector system. The gas distribution system is used for providing a nitrogen gas source for the alcohol supply system, the liquid oxygen supply system, the plasma igniter and the steam ejector system. By using the system, a test requirement can be satisfied and the test is safe and reliable.

The invention discloses a simulated grounding test system and method for a grounding material. The system comprises a simulated groove, a ground net and a power supply; the ground net is arranged in the simulated groove in a preset buried depth, the simulated groove is filled with sandy soil, and the power supply is connected to the ground net via a lead; and the simulated groove is formed by excavation in the flat ground. On the basis of an electromagnetic field theory and a principle of similitude, proportional relations among different related quantities during simulated test are derived, and large test is converted into small simulated test equivalently. The system and method can be used to carry out a series of simulated tests including grounding resistance measurement, new grounding material test, resistance reducing agent test and grounding characteristic research on the large ground net in a limited area directly, it can be ensured that a test effect is consistent with that of a real test; and a test place is small, the soil resistivity can be changed flexibly, various types of test can be completed, and the system and method can be applied to power frequency grounding simulated test, impact grounding simulated test, grounding body long-acting corrosion resistance test and the like.

The invention provides a concrete component for load-solution erosion long-term coupling action. A bracket is arranged at each of the two ends of the lower end face of the concrete component; the width of the bracket is equal to the width of the concrete component; a reserved duct is arranged on each bracket; the two reserved ducts are symmetrically arranged; the hole centers of the ducts are located on a same straight line; a container used for containing a corrosive solution is arranged on the upper end face of the concrete component; the container is free from bottom, so that the solution in the container can be in direct contact with the upper end face of the concrete component. The test method for the simple reinforced concrete under long-term load-solution erosion coupling action can be performed, so that the defects of easiness in corrosion and large occupation of the loading instrument in the traditional test method are overcome.

The invention discloses a test platform for a steel-rail milling and grinding machine. The test platform comprises a test platform frame, wherein the bottom of the test platform frame is mounted on the test platform by a first adjusting device which can adjust the inclination of the test platform frame; the steel-rail milling and grinding machine is arranged on a cross beam of the test platform frame; a guide rail is arranged on the test platform below the steel-rail milling and grinding machine; a guide rail vehicle driven by a low-voltage power supply is mounted on the guide rail; and a steel-rail test piece is arranged on the guide rail vehicle opposite to the working end face of the steel-rail milling and grinding machine by a second adjusting device which can adjust the rail distance of the steel-rail test piece. The test platform provided by the invention is complete in function, simple in structure and low in cost, and provides a powerful test technical support for the equipment debugging and study of the steel-rail milling and grinding machine.

The invention relates to an automatic driving vehicle backlight test field and a test method. The test method comprises the steps of performing scene arrangement on the test field and responding to ato-be-tested vehicle. The scene arrangement is as follows: the test field comprises a road, a tunnel, a controller and a backlight emitting device. The tunnel is erected above a road; the two ends ofthe tunnel are set as a tunnel entrance and a tunnel exit respectively; the backlight emitting device is fixed in the tunnel and emits backlight towards the tunnel entrance; the controller controls the backlight emitting device to be turned on and turned off; and a backlight scene is formed when the backlight emitting device is turned on. The response of the to-be-tested vehicle is that the to-be-tested vehicle normally drives into the tunnel forming the backlight scene, finally safe driving in the tunnel provided with the backlight scene is completed, and it is ensured that the driving track,the driving speed and the lane of the to-be-tested vehicle are all kept within a set safety range. When the backlight test field is used for backlight test, a target vehicle does not need to consumetest field resources, the backlight test can be performed at any time, and the test cost is low.

The invention relates to an animal fragment injury device, and belongs to the technical field of animal test devices. The animal fragment injury device comprises a base, a compression chamber, a fragment generator, a supercharger and a protective cover, wherein the compression chamber is a closed shell, and openings are formed in the two ends of the shell; the fragment generator comprises an energy accumulation pipe and a fragment generation mechanism, and the fragment generation mechanism comprises a cover body, a sheet and a plurality of fragments; the supercharger is a high-pressure air compressor; the sheet is provided with cracks; and the protective cover at least comprises a framework layer, a heat absorption layer stacked outside the framework layer and an energy absorption layer arranged outside the heat absorption layer in a sealed mode, and the energy absorption layer is a membrane made of elastic materials. According to the animal fragment injury device, the air pressure mode is used for replacing a traditional mode that fragments are generated by means of shell explosion, safety is remarkably improved, cost is remarkably reduced, pressure is released at the moment whenworking pressure is reached, namely that high pressure and release are completed at the same time, and the requirement for equipment is lowered.

The invention provides a force loading method used for a vehicle chassis test. One of two opposite action points of a first linear driver is connected onto a force-applying point of a chassis to be detected, and the other action point is connected onto a fixing component. Force bore on the force-applying point is increased by controlling extension of the first linear driver. According to the method, the first linear driver is adopted to act as a force-applying part to be connected with the chassis of the tested vehicle. Size of a load (i.e. action force) loaded on the chassis can be conveniently controlled via controlling extension of the first linear driver so that operation is relatively simple. Besides, compared with the mode of loading heavy counterweights for acting load in the prior art, the heavy counterweights are saved and space for placing the heavy counterweights is not needed correspondingly by adopting the aforementioned method so that test place is saved and place utilization rate is enhanced.

The invention relates to a universal animal accurate injury platform for multiple conditions and multiple simulation environments. The platform comprises a fragment component convenient for realizinganimal fragment injury, a shock wave component convenient for realizing animal shock wave injury, a low-temperature component capable of providing a low-temperature environment after animal injury, alow-pressure component capable of providing the low-temperature environment after the animal injury, a burning component used for carrying out injury on animal burns, a seawater dipping component usedfor carrying out seawater dipping on an injured animal, and a camera component used for carrying out high-speed camera shooting. The platform also comprises a lacing component used for fixing the animal during fragment injury, shock wave injury, burn injury and seawater dipping. The invention can provide various optional injury ways and natural environments, is favorable for enlarging an applicable range, reducing a workload, improving working efficiency and reducing experiment cost, provides help for improving human body injury research quality and levels, and improves experiment accuracy through a high-speed camera shooting function.

The invention discloses a detachable multifunctional drop hammer impact test device, which is arranged on a reaction wall and a reaction bearing platform which are perpendicular to each other, and comprises an impact hammer, a rigid guide rod, a detacher, a fixed bracket, a first bracket, a second bracket and a structural test piece, the fixed bracket, the first bracket and the second bracket are sequentially fixed on a reaction wall from top to bottom; the upper and lower ends of the rigid guide rod are fixedly connected with the first bracket and the second bracket through bolts respectively; the impact hammer comprises a balance weight and an impact head arranged below the balance weight. The impact hammer is suspended right above the structural test piece and can vertically slide along the rigid guide rod; the lower end of the detacher is connected with the impact hammer, and the upper end of the detacher is connected with a winch arranged on the fixed support through a sling. The device is low in cost, is suitable for impact tests of most components such as beams, plates and columns in engineering structures, can be conveniently mounted and dismounted, and is worthy of popularization.

The invention creatively provides a quick disassembly and assembly type acoustic power sensor installation device. The device comprises a plurality of arc-shaped connecting rods arranged at intervals,the top connecting end of each arc-shaped connecting rod is detachably connected with the same top connecting disc, and the bottom connecting end of each arc-shaped connecting rod is detachably connected with the corresponding bottom positioning disc. The plurality of bottom positioning discs are detachably connected through bottom positioning rods. According to the quick disassembly and assemblytype acoustic power sensor installation device, all components are detachably connected, rapid assembly can be achieved according to requirements when a test is started, rapid disassembly and assembly can be achieved after the test is finished, the installation precision of the installation device can be guaranteed, the installation time is remarkably shortened, the test accuracy is improved, andthe product test period is shortened; and meanwhile, the device is convenient to store and transport, and the test field is saved.

The invention discloses a rapid detection device and method for a horizontal winching machine, and the device comprises a first pedestal and a second pedestal which are mutually vertically fixed, the first pedestal is used for fixing a to-be-detected winching machine, and the second pedestal is used for fixing a hydraulic control device, an oil cylinder, and an oil rod. The oil rod is positioned in the oil cylinder and is movably connected with the oil cylinder; the hydraulic control device is located at one end of the second base away from the first base; the hydraulic control device is connected with the oil cylinder and controls the oil rod to move, and the oil rod moves in the axial direction of the oil cylinder; one end located on the outer side of the oil rod is used for being connected with the head of a winching machine twisted rope, and the tail of the winching machine twisted rope is fixed to the second base through a tail rope automatic winding and unwinding device; and the hydraulic control device is connected with a pressure gauge and used for measuring the load value of the winching machine. The hydraulic oil cylinder is used for simulating the balancing weight, so that the load of the winching machine can be tested more conveniently, safely and accurately, movement is convenient, the occupied area of a site and the number of personnel are reduced, the safety coefficient is high, the structure is compact, transmission is stable, and noise is low.