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 device for determining the adhesive property of a steel bar and concrete in an extruding manner. The device comprises a loading framework, a concrete test piece, the steel bar, PVC (Polyvinyl Chloride) pipes, a displacement meter, a force sensor, a hydraulic jack, an oil pump, a static signal testing and analysis system and a computer, wherein the loading framework is composed of an upper steel plate, a lower steel plate and a high-intensity bolt; the steel bar is arranged in the middle of a concrete test piece; the upper end of the steel bar penetrates through a round hole formed in the middle of the upper steel plate; the displacement meter and the force sensor are arranged at the upper end and lower end of the steel bar respectively; the hydraulic jack is arranged below the force sensor; the displacement meter and the force sensor are connected with the static signal testing and analysis system; the static signal testing and analysis system is connected with the computer; the PVC pipes sleeves the two ends of the part, located in the concrete test piece, of the steel bar. The device disclosed by the invention has a simple structure and is convenient to detach; a few of materials and instruments are needed; the device is not only suitable for scientific researches, but also suitable for testing the adhesive property of the steel bar and the concrete at a construction site.

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 belongs to the technical field of ramjet test, and specifically relates to an apparatus for injecting the tail gas and inflow hot air in a vacuum cabin of a ramjet. The apparatus comprises a receiving chamber, a vacuum pipeline, a vacuum butterfly valve, an injection nozzle and a throttle pipeline, wherein the injection nozzle is of a De-Laval nozzle structure and is inserted in the receiving chamber, the inlet of the injection nozzle is exposed outside the receiving chamber for receiving external high-temperature steam, the outlet of the injection nozzle is positioned in the receiving chamber and communicates with the inlet of the throttle pipeline, and the vacuum pipeline is installed on the side surface of the receiving chamber and connected with the vacuum cabin of the ramjet through the vacuum butterfly valve. The apparatus can satisfy long-time test and stably retain pressure in the vacuum cabin.

The invention discloses a supporting load detecting device for a winch. The supporting load detecting device comprises a reel and a belt type brake used for braking the reel and further comprises an extension plate, an anti-shearing block, a jacking hydraulic oil cylinder, a jacking hinge seat and a bottom plate used for bearing the fixed winch. The front side edge of the extension plate is connected with the reel wall of the reel. The lower end of the extension plate is connected with the upper end of the jacking hinge seat. The lower end of the jacking hinge seat abuts against the upper endof the jacking hydraulic oil cylinder. The lower end of the jacking hydraulic oil cylinder is connected with the bottom plate. The anti-shearing block is further connected with the reel wall of the reel and arranged above the extension plate. The invention further discloses a method for winch supporting load detecting. According to the supporting load detecting device, a lot of tedious early-stagepreparation works can be omitted, and supporting load detecting is conducted on the winch efficiently and simply.

The invention provides an adjustable supporting device for equipment mounting frame. The adjustable supporting device for the equipment mounting frame comprises two groups of supporting mechanisms which are arranged in a mirror symmetry manner, wherein each supporting mechanism is composed of a chassis; an upright column is eccentrically welded on each chassis; two ribbed slabs are welded on each side wall of each upright column; a supporting square tube is welded to one side wall of the upper end of each upright column and is horizontally arranged; a supporting plate is welded to the upper top surface of each supporting square tube; one side of each supporting plate extends out of the upper top surface of the corresponding supporting square tube and hangs in the air; and a plurality of mounting holes are formed in one side, extending out of the corresponding supporting square tube, of each supporting plate. According to the adjustable supporting device for the equipment mounting frame, the mounting conditions of equipment mounting frames in different machine types can be met; four through grooves are formed in each chassis to be matched with four ground screws of each fixing bottom plate, so that the mounting length can be adjusted; the ribbed slabs on the corresponding upright columns ensure the hoisting safety; the mounting holes formed in the corresponding supporting plates meet the requirements for widths of the equipment mounting frames in different machine types; and in the premise of meeting the using function, a test site is saved, and the maximum test capability of a limited test site can be exerted during test in a large scale.

The invention discloses a method for detecting the corrosion performance of a direct-current grounding electrode, and belongs to the field of high-voltage tests. The method comprises the steps of: serving an electrode A of a direct-current grounding electrode as a flow injection electrode, serving an electrode B as a backflow electrode, performing pretreatment according to the material standard, and sealing the connecting position of a drainage wire and the electrodes through an insulation sleeve; buring the electrode A in an actual soil environment, determining a potential compensation point of the electrode A, and measuring the grounding resistance of the electrode A; buring the electrode B in an actual soil environment which is two times away from the potential compensation point of the electrode A; connecting the electrode A as an anode and the electrode B as a cathode with a direct-current power supply, and injecting current into the electrode A and the electrode B within a preset time; and cleaning according to a preset cleaning method after the through-flow is finished, removing corrosion products, drying and measuring the mass of the electrode, determining the corrosion rate of the electrode A and the electrode B by combining the surface area of the electrode, the through-flow time and the material density, and determining the corrosion performance of the direct-current grounding electrode through the corrosion rate.

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 discloses a thermal property testing device and a thermal property testing method of a sintering heat-preservation hollow block and an external heat-preservation plate. The device comprises a constant-temperature box body, a heater, a sealing cover plate, a first movable type side plate and a second movable type side plate, wherein a space formed by encirclingby a bottom plate of the constant-temperature box body, the first movable type side plate and the second movable type side plate is a testing cavity for putting the sintering heat-preservation hollow block and the external heat-preservation plate; the top of the testing cavity is detachably connected with a movable cover plate; the heater is arranged inside the constant-temperature box body; a temperature controller, an thermal infrared imager and a thermometer are arranged outside the constant-temperature box body. The method comprises the steps ofassembling the testing device; measuring and recording temperature data; and calculating equivalent heat conductivity coefficients. The thermal property testing device and the thermal property testing method can be conveniently realized, a testing site can be greatly saved, the use and the operation are convenient, the testing expense is low, the requirement on the thermal property test can be met well, and a test result with a relatively high reference value can be obtained,the practicability is high,and popularization and application are convenient.

The invention belongs to the technical field of ramjet engine tests, and in particular relates to a vacuumizing system and a vacuumizing method for a vacuum cabin of a ramjet engine. The system comprises a vapor source, a vapor distributer, a first-stage ejection device, a second-stage ejection device, a muffling tower and a switch valve, wherein the first-stage ejection device and the second-stage ejection device are connected in series; a vapor inlet of the first-stage ejection device communicates with the vapor distributor through the switch valve; a vapor inlet of the second-stage ejection device communicates with the vapor distributor; a vapor outlet of the second-stage ejection device communicates with the external environment through the muffling tower; a vacuumizing inlet of the first-stage ejection device communicates with the vacuum cabin to be vacuumized; and the vapor distributor is connected with the vapor source. The system and the method, provided by the invention, have the advantages of large working range and high vacuumizing ability.

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.

A large movable lateral uplifting composite lading slope physical model test apparatus comprises a test framework, a bottom uplifting mechanism, a rear portion loading mechanism and a water level elevating simulation mechanism; the bottom of the front portion of the test frame is hinged to the test site ground surface, the test frame is formed by mutually splicing a front panel at the front portion, at least two vertically-arranged guard boards and a frame baseboard at the bottom portion, and the spacing between adjacent guard boards is adjustable; the bottom uplifting mechanism is arranged below the test frame and is used for driving the rotation of the test frame around the hinge pint at the front portion; and the rear portion loading mechanism comprises a loading steel board, an electro-hydraulic servo loading machine and a counterforce wall, the counterforce wall is arranged behind the test frame, the rear end of the electro-hydraulic servo loading machine is hinged to the counterforce wall, the front end of the electro-hydraulic servo loading machine is connected with the loading steel board, and the rear portion loading mechanism is used for applying action force to a slope physical model in the test frame from the rear end of the test frame. The apparatus is suitable for large-size slope physical models, and can realize the establishment of three-dimensional models better satisfying geometric similarity conditions than real slopes.

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 discloses a power cable insulation closed terminal and a closing method of a cable end. The power cable insulation closed terminal structurally comprises an outer shielding layer, an insulating layer and an inner shielding layer, wherein the outer shielding layer, the insulating layer and the inner shielding layer are sequentially arranged from outside to inside to form a semi-closed structure with an opening at one end; and the inner shielding layer, the insulating layer and the outer shielding layer are integrally prefabricated together, the electric field distribution is uniform, and the performance is reliable. The power cable insulation closed terminal can be conveniently sleeved into the end part of a cable, plays a role in sealing a high-voltage electric field, ensures that a withstand voltage test is smoothly carried out, and ensures the safety of personnel at the end part of the cable. When in use, the inner shielding layer is sleeved on a cable conductor, the closed end of the inner shielding layer is in contact with the cable conductor, and the opening end of the inner shielding layer is in insulation lap joint with the cable; the opening end of the outer shielding layer is in lap joint with the outer shielding layer of the cable, and the insulating layer is arranged between the outer shielding layer and the inner shielding layer and is attached to the cable in an insulating mode; and finally, the outer shielding layer is grounded.

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 discloses a thermal property testing device and a thermal property testing method of a sintering heat-preservation hollow block and an external heat-preservation plate. The device comprises a constant-temperature box body, a heater, a sealing cover plate, a first movable type side plate and a second movable type side plate, wherein a space formed by encirclingby a bottom plate of the constant-temperature box body, the first movable type side plate and the second movable type side plate is a testing cavity for putting the sintering heat-preservation hollow block and the external heat-preservation plate; the top of the testing cavity is detachably connected with a movable cover plate; the heater is arranged inside the constant-temperature box body; a temperature controller, an thermal infrared imager and a thermometer are arranged outside the constant-temperature box body. The method comprises the steps ofassembling the testing device; measuring and recording temperature data; and calculating equivalent heat conductivity coefficients. The thermal property testing device and the thermal property testing method can be conveniently realized, a testing site can be greatly saved, the use and the operation are convenient, the testing expense is low, the requirement on the thermal property test can be met well, and a test result with a relatively high reference value can be obtained,the practicability is high,and popularization and application are convenient.

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 relates to an automatic driving vehicle backlight test field and a test method. The test method includes scene layout on the test field and response of the vehicle to be tested. The scene layout is as follows: the test field includes roads, tunnels, controllers and backlight emitting devices. The tunnel is erected above the road, and the two ends of the tunnel are set to be the tunnel entrance and the tunnel exit respectively. The backlight emitting device is fixed in the tunnel and emits backlight toward the tunnel entrance. The controller controls the backlight emitting device to be turned on and off. When the backlight emitting device is turned on, a backlight is formed. Scenes. The response of the vehicle to be tested is: the vehicle to be tested normally enters the tunnel with the backlight scene, and finally completes the safe driving in the tunnel with the backlight scene, ensuring that the vehicle’s trajectory, speed and lane keeping are all set within the safe range. Using the backlight test field of the present invention to carry out the backlight test does not require the target vehicle to consume the resources of the test field, and the backlight test can be performed at any time, and the test cost is low.

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.