37results about How to "Meet different test needs" patented technology

The invention discloses a method for rapidly identifying and screening anti-blight banana seedling. The method comprises the steps of establishment of banana seedling hydroponic system, inoculum preparation and inoculation, daily management of banana seedling, disease situation investigation and grading. Banana seedling stage inoculation and hydroponic identification method can effectively control interference due to differences in soil structure, nutrition, microorganism, etc., during banana seedling stage inoculation identification process, rapidly and accurately identify anti-blight bananaseedling, continuously identify large amount of tissue-cultured banana seedlings in small area, perform multiple times of identification in one year, improve test result reliability, shorten identification period, and save land occupation and test cost.

The invention discloses a single-phase programmable current source device and a control method thereof. Voltage of a power grid sequentially passes through a circuit breaker, a three-phase input reactor and a three-phase alternating current contactor and then is accessed into a rectifying unit, the rectified voltage is accessed into a three-phase inverter assembly, a double-DSP (digital signal processor) control unit is used for receiving the current waveform parameters sent by a touch display screen or a remote monitoring platform, and adopts a continuous output method, the double-DSP control unit is also used for generating instruction current to drive three groups of inverter assemblies to generate current waveform, the inverter assemblies are used for outputting Hall detection signals and current transformer detection signals and feeding back into DSP controllers, and the input parameters of a current source generation unit are corrected. The single-phase programmable current source device has the advantages that the digital and intelligent functions are realized, and the single-phase programmable current source device is used for performing heat tolerance test on the devices, such as low-voltage switches, circuit breakers, alternating current contactors and fuses.

The invention relates to a high and low temperature transverse vibration tester for a fastener. The tester comprises a frame and a support, a clamp is arranged on the support, a first force measuring sensor is arranged on the clamp, the tester further comprises a base and a control box having the internal temperature controllable, a drive assembly is arranged in the frame, a second force measuring sensor is arranged on the drive assembly, and a displacement sensor is arranged on the support. The tester has the advantages that the clamp is sealed in a workroom of the control box, and the temperature of the workroom is controlled and adjusted according to the demand of test, so that the workroom can realize a low temperature environment or a high temperature environment; then the drive assembly drives the clamp to move up and down on the support, the second force measuring sensor detects the change of axial pre-tightening force, the first force measuring sensor detects the change of transverse pre-tightening force, the displacement sensor detects the change of transverse displacement, and the anti-loosening characteristic of the fastener is judged, so that the tester can meet self-locking performance test of the fastener in the low temperature or high temperature environment and simultaneously meet the test requirements of various different standards.

The invention discloses a housing construction steel beam flexural strength testing machine which comprises a buffer base, a testing platform, test heads and reinforcing ribs. Universal wheels are arranged on all of four corners at the bottom of the buffer base, an operation station is fixed at the central position at the top of the buffer base by a supporting frame, and a storage cabinet is fixedat the central position of the supporting frame; a control panel is arranged at one side of the operation station, and supporting pillars are arranged at both ends of the top of the operation station; the testing platform is arranged at the central position at the top of the operation station; a testing device is fixed at the bottom end of a lifting seat, and the test heads are fixed at both endsof the bottom of the testing device by first fixed bolts; and carbon steel reinforcing layers are arranged inside the side walls of the test heads. By mounting the buffer base, the universal wheels and damping springs, the housing construction steel beam flexural strength testing machine is convenient to move, meanwhile, stability is ensured in the moving and using process, damping and shockproofeffects are taken, and shaking is avoided.

The invention discloses large-size reinforced soil shear strength testing equipment, and a testing method. The large-size reinforced soil shear strength testing equipment comprises a control unit, a pressure loading unit and a shear box assembly; the control unit comprises an industrial computer A, a normal force motor, a horizontal force motor, a microcomputer control system, a normal force loading driving device, a horizontal force loading driving device, a normal force motor driving device and a horizontal force motor driving device; the pressure loading unit comprises a base, a slide way,a normal force loading shaft rod and a horizontal force loading shaft rod, and an outer blocking piece is arranged on the slide way; and the shearing box assembly is arranged in the outer blocking piece. In addition, the invention also provides a testing method adopting the equipment. The equipment can realize a large-size direct shear test of reinforced soil and obtain a comprehensive evaluationresult of a large-size soil sample shear strength test, has the advantages of reasonable evaluation parameters, high accuracy and high efficiency, and can meet the requirements of a multi-parameter complex test scheme.

The invention discloses a hyporheic exchange sand tank model capable of adjusting the water supply mode. The characteristics lie in that the hyporheic exchange sand tank model comprises a sand tank main body, a constant water head device, a water pump and a water pipe connecting portion, and is characterized in that the sand tank main body is mainly composed of a main sand box located at the middle, an upstream water box and a downstream water box at two sides and a lower water box, the main sand box is internally loaded with sand for testing, and the main sand box is separated from the upstream water box, the downstream water box and the lower water box by organic glass plates with filtering holes; and the constant water head device comprises an upstream constant water head device and a downstream constant water head device. The advantages are that the hyporheic exchange sand tank model not only can realize constant-water-head water supply, but also can realize constant-flow water supply through the water pump; setting of the constant water head device enables a water head to become a quantifiable controllable factor; the design of the water pump enables the water flow to realize constant-flow circulation; different water supply modes meet different test requirements, the device is simple to operate, economic and affordable, has important significance for studying a hyporheic exchange mechanism and also provides a good idea for physical model building of a hyporheic zone.

The invention discloses a test device for the conduit burst pressure under static conditions and a working method thereof and belongs to the technical field of medical apparatus detection. The test device includes a body, wherein the body is internally provided with a pressure device container, one end of the pressure device container is in sliding connection with a liquid push device, the other end of the pressure device container is provided with a liquid inlet and a liquid outlet, the liquid outlet is communicated with a conduit interface, a ball screw transmission mechanism is formed between the liquid push device and a driving device, one end opposite to the driving device is provided with a constant temperature water bath tank and a water pipeline, a liquid outlet pipe is internallyprovided with a pressure sensor, the driving device is provided with a controller, and the pressure sensor is connected with a controller of the driving device. The invention further discloses the working method of the test device. The test device is advantaged in that the fluid with the stable rate is supplied into the conduit, the conduit is guaranteed to be in the constant temperature environment, and test requirement in accord with the industrial standards is met.

The invention discloses an air inlet passage dynamic pressure acquisition and tail cone control device, which comprises a microprocessor, an actuator, a display circuit, a keyboard circuit, a JTAG interface debugging circuit, a data storage circuit, a keyboard display driving chip, a progress storage circuit, a displacement signal acquisition circuit, a serial port communication circuit, two proximity switches, a power source, a motor driving circuit and a data acquisition module, and wherein the actuator is formed by fixedly connecting a stepping motor with a conical piston through a lead screw. The air inlet passage dynamic pressure acquisition and tail cone control device is low in cost and high in precision.

The invention discloses a test mold device for pouring a hollow cylindrical mortar test piece. The test mode device comprises a test mold base, an outer test mold cover and an inner test mold liner. The test mode base is a circular iron plate engraved with a plurality of concentric circular-ring-shaped grooves. The outer test mold cover consists of a bottom outer cover, a standard layer outer cover, and a top outer cover. The inner test mold liner is a long hollow cylinder. The outer test mold cover is assembled; the assembled outer test mold cover and the inner test mold liner are arranged onthe test mold base to form hollow cylindrical pouring space. According to the invention, hollow cylindrical mortar test pieces with different specifications are poured by adjusting the dimensions ofthe outer test mold cover and the inner test mold liner. An effective test data support can be provided for water and earth pressure study of the underwater tunnel and the assistance is provided for the theoretical analysis.

The invention relates to the technical field of mechanical tests, in particular to a universal mechanical testing machine which comprises a driving part, a tension-compression transmission part, a side-compression transmission part, a clamping part and a rack, and the driving part is connected to the middle of the bottom of the rack in a matched mode; the driving part is in transmission connection with the tension-compression transmission part or the side-compression transmission part; the tension-compression transmission part is in transmission connection with the two clamping parts which are in relative sliding fit with the rack; the two ends of the side-compression transmission part are arranged on the rack in a sliding fit mode, and the two ends of the side-compression transmission part are arranged between the two clamping parts in a matched mode so as to carry out side part jacking and pressing on the to-be-tested piece clamped and fixed between the two clamping parts. The tension-compression transmission part and the side-compression transmission part are arranged in the device so that a material can be stretched or compressed, a top pressure test can be carried out on the material from the side part of the material, multiple test modes are provided, and different test requirements can be conveniently met.

The invention discloses a size-adjustable anchor rod pull-out test platform, and belongs to the field of mine engineering. The platform comprises a platform main body, and supporting legs and universal wheels are arranged at a bottom of the platform main body; multi-specification similar geologic body forming boxes are arranged on the platform main body; lengths and widths of box bodies of the multi-specification similar geologic body forming boxes can be adjusted according to test requirements so as to pour a similar model; the multi-specification similar geologic body forming boxes are driven by a worm and a worm gear, and a test body is conveyed out of the box bodies of the multi-specification similar geologic body forming boxes; and an anchor rod pull-out test box and a model cleaningdevice are included. The platform belongs to non-electric control equipment and is low in cost; a pure mechanical structure design is adopted, and operation is simple and safe; and anchor rod pull-outtests with different anchorage lengths can be performed by forming similar geologic body blocks with different specifications, and the test body can be conveniently and quickly taken out for the nexttest.

The invention relates to the technical field of corrosion resistance test equipment, and discloses a flowing mixed gas corrosion test device which comprises a machine body, a test cavity is formed inthe top of the front surface of the machine body, and a mixing box is fixedly mounted on the back surface of the machine body. According to the flowing mixed gas corrosion test device, a heating sleeve, a first heating plate and a second heating plate are arranged; due to design of the first heating plate, mixed gas in the mixing cavity can be preliminarily heated; due to design of the heating sleeve, mixed gas with humidity is subjected to secondary heating and heat preservation; condensed water is prevented from being generated in a pipeline; due to the design of the second heating plate, heating and heat preservation of the internal environment of the test cavity can be achieved, condensate water is prevented from being generated in the test cavity, meanwhile, due to cooperation of theheating sleeve, the first heating plate and the second heating plate, the temperature of mixed gas can be changed so as to meet different test requirements, and therefore the practicability of the device is improved.

The invention relates to a combined type steel structure reaction frame comprising four identical door type reaction frames, an annular beam, a slide block and a top part combination member, wherein the four identical door type reaction frames are arranged in such a way that a center of a door type reaction frame top part cross beam is used a circle point, and an included angle of 45 degrees is formed; each door type reaction frame comprises a stand column and a crossbeam, the middle part of the cross beam of each door type reaction frame is broken at a certain distance, the top part combination member is inserted into the broken part of which the center is the circle point, the annular beam is connected with each cross beam via steel plates fixed on bottom parts of all cross beams, and the slide block is arranged on the annular beam.

The invention discloses a local seepage tunnel lining pouring test mold. The mold comprises a rest mold base, a test mold outer cover, a test mold inner container and a separation piece. The test moldbase is a circular iron plate caved with multiple concentric ring-shaped grooves. The test mold outer cover comprises a bottom layer outer cover, a standard layer outer cover and a top layer outer cover. The test mold inner container is a long hollow cylinder. The separation pieces are four long-strip-shaped thin iron sheets. By assembling the test mold outer cover, the test mold outer cover andthe test mold inner container and the separation pieces are arranged on the test mold base to form four independent fan-shaped pouring spaces. Accordingly, by adjusting the sizes of the test mold outer cover and test mold inner container, local seepage hollow cylinder mortar test pieces with different specifications are poured. Effective test data support can be provided for research of underwatertunnel water-earth pressure, and help is provided for theoretical analysis.

The invention relates to a transverse vibration test device for a fastener. The device comprises an installation platform, a sealing cover and a semiconductor refrigeration piece, wherein the installation platform is provided with a vertical plate, a driving assembly is disposed on the installation platform, the semiconductor refrigeration piece comprises an absorption part and a release part, theabsorption part is attached to the driving assembly, the release part is tightly attached to the bottom of the installation platform, and the installation platform is also provided with a refrigeration device. The device is advantaged in that: a measured fastener is sealed on the vertical plate of the installation platform through the sealing cover, the heat of the driving assembly is absorbed through the semiconductor refrigerating piece and heat release is carried out, temperature heating in the sealing cover is realized, cooling treatment is carried out on the sealing cover by the refrigerating device, the temperature in the sealing cover can be quickly reduced, different tests in high and low temperature environments are met, the heat generated by the driving assembly in the test process is absorbed through the semiconductor refrigerating piece, heat recycling can be realized, heat emission of the driving assembly is reduced, and energy conservation and emission reduction of energy sources are realized.