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

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 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.

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 discloses a wind power locking disc test stand, which comprises a support frame, a shaft sleeve, a main shaft, an arm of force, a base, a key and a bolt and is characterized by also comprises a convex spherical base plate, a concave spherical top cover and a jack, wherein the main shaft is arranged in the support frame; the shaft sleeve is arranged at one end of the main shaft and is connected with the support frame through the key; the arm of force is arranged at the other end of the main shaft; the convex spherical base plate is arranged at the stress position of the arm of force; the concave spherical top cover is arranged on the jack; and the support frame and the jack are arranged on the base. The test stand enhances safety and reliability, lowers equipment cost and hasthe advantages of simple structure, short testing time, small testing site and the like.

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 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.