31results about How to "Avoid Test Impact" patented technology

The invention relates to a test machine, in particular to a cloth wear resistance test machine. According to the technical scheme, a cloth wear resistance test machine is provided, which performs a test on the wear resistance of the cloth instead of manual work so as to avoid a hand ache from affecting the follow-up test and can be used for collecting and processing chips falling off during testing. The cloth wear resistance test machine comprises a frame body, supporting legs, a first bearing seat, a first rotating shaft, a driving motor, a roller and the like; the supporting legs are symmetrically and fixedly connected to the left side and the right side of the outer bottom of the frame body, and the first bearing seat is embedded in the middle of the top of the frame body and the middleof the bottom of the frame body. According to the test machine in the invention, the cloth is fixed in contact with an annular grinding piece through a fixing device, and the driving motor is startedso that the wear resistance of the cloth can be tested by the annular grinding piece without the need for people to manually test the cloth by tools, time and labor are saved, and subsequent tests can be prevented from being affected by the hand ache.

The invention discloses a multi-channel audio test device and a test method. The multi-channel audio test device comprises an equipment access module, a control module, an audio signal acquisition module, an audio output module, a storage module and a terminal access module; the audio signal acquisition module is used for acquiring a first audio signal when a to-be-tested device plays a first preset audio through the audio playing interface in a playing test stage; the audio output module is used for playing a second preset audio in an answering test stage, so that an audio acquisition interface of the to-be-tested device acquires a second audio signal; and the terminal access module is used for receiving a control instruction of the terminal to enter a playing test stage, an answering test stage or a reading stage, and in the reading stage, the content stored by the storage module is read and output to the terminal.

The invention relates to test equipment which comprises a test platform and at least one temperature sensing device. The test platform is used for bearing a circuit board and testing at least one encapsulation chip on the circuit board. The temperature sensing device is configured above the encapsulation chip and used for sensing infrared rays emitted by the encapsulation chip to estimate a temperature value of the encapsulation chip. A space is formed between the encapsulation chip and the temperature sensing device.

The invention provides a superconducting material current test device, and relates to the technical field of new materials, and the superconducting material current test device comprises a base, wherein a work box is fixedly connected to the top of the base, a motor box is fixedly connected to the left side of the work box and at the top of the base, a current meter is fixedly connected to the left side of the top of the work box, a height adjustment switch is provided in the front of the work box, an inlet is provided above the work box, and the bottom of the inlet penetrates the work box andextends to the inside of the work box. The superconducting material current test device is provided with the work box, in which the entire testing process is performed. An insulation pad is providedin the work box to effectively prevent leakage accidents and prevent the external environment from affecting the test. The superconducting material current test device, compared with the test in the air, is safer and more accurate, and solves the problem that the current test device is exposed in the air without any protective device and has a low safety factor.

The invention discloses a branch test connection device for high-speed data acquisition equipment. The connection device comprises an equipment main body, data lines and connectors. The connectors arearranged on the left portions of the data lines and connected with an interface in the right portion of the equipment main body; fixing frames are fixed to the front portion and the rear portion of the right end of the equipment main body through screws; U-shaped frames are arranged on the inner sides of the fixing frames; the left portions of the U-shaped frames are clamped in the fixing framesthrough installation blocks; and the U-shaped frames make contact with the right end of the equipment main body. According to the invention, through cooperation of the fixing frames, mounting blocks and fastening bolts, the U-shaped frames can be conveniently and quickly disassembled and assembled; through cooperation of the U-shaped frames, the mounting plate, a positioning plate, fixing blocks and a long bolt, a connector is conveniently positioned, poor contact is prevented from influencing the test; through first magnets, second magnets and an end cover, dust prevention is conveniently performed on the interface in the equipment main body; dust falling is prevented from influencing use; use is convenient; and connection stability is good.

The invention discloses a device and a method for measuring the adhesion strength of a gel type plugging material and a rock wall surface. The device comprises a rotating component and a measuring shell connected with the rotating component, a hollow rock core is arranged in the measuring shell, a T-shaped stop lever is arranged in the hollow rock core, and one end of the T-shaped stop lever penetrates out of one side of the measuring shell and is provided with a displacement measuring part for measuring the displacement of the T-shaped stop lever; and a sealing plate is arranged on the other side of the measuring shell. According to the invention, the hollow rock core is used as a container and is in direct contact with the to-be-tested gel type plugging material, the internal direct pressurization is carried out by injecting the oil liquid, so that the to-be-tested gel type plugging material obtains the pushing force, and when the to-be-tested gel type plugging material moves relative to the hollow core, the adhesion strength of the to-be-tested gel type plugging material and the rock wall surface can be calculated; the device and method are of great significance to clarify the plugging mechanism of gel plugging materials and solve the problem of well leakage.

The invention discloses a testing device for a pipeline cathodic protection potential test piece and a preparation method of the testing device and belongs to the field of pipeline protection. The testing device comprises a metal test piece, test lead wires, a universal meter, a protective shell, an insulator and a switch, wherein the test lead wires comprise a first test lead wire, a second testlead wire and a third test lead wire; the insulator is arranged inside the protective shell; the metal test piece is externally coated with the insulator; the lower surface of the metal test piece isflush with the lower end face of the protective shell and is exposed; the first test lead wire, the switch, the second test lead wire, the metal test piece, the third test lead wire and the universalmeter are sequentially and electrically connected; besides, the connecting end part of the second test lead wire and the metal test piece and the connecting end part between the third test lead wire and the metal test piece are respectively and externally coated with the insulator. According to the testing device, the morphology of leakage points of a pipeline surface coating can be accurately simulated, the influence of shielding effect and edge effect of the metal test piece on testing is avoided, and a cathodic protection potential of a to-be-tested pipeline can be obtained by accurate testing; in addition, the testing device has the advantages of simplicity and easiness in operation and long service life.

The invention discloses a testing device for a pipeline cathodic protection potential test piece and a preparation method of the testing device and belongs to the field of pipeline protection. The testing device comprises a metal test piece, test lead wires, a universal meter, a protective shell, an insulator and a switch, wherein the test lead wires comprise a first test lead wire, a second testlead wire and a third test lead wire; the insulator is arranged inside the protective shell; the metal test piece is externally coated with the insulator; the lower surface of the metal test piece isflush with the lower end face of the protective shell and is exposed; the first test lead wire, the switch, the second test lead wire, the metal test piece, the third test lead wire and the universalmeter are sequentially and electrically connected; besides, the connecting end part of the second test lead wire and the metal test piece and the connecting end part between the third test lead wire and the metal test piece are respectively and externally coated with the insulator. According to the testing device, the morphology of leakage points of a pipeline surface coating can be accurately simulated, the influence of shielding effect and edge effect of the metal test piece on testing is avoided, and a cathodic protection potential of a to-be-tested pipeline can be obtained by accurate testing; in addition, the testing device has the advantages of simplicity and easiness in operation and long service life.

The invention provides a tooth cleaning product performance evaluation system and a tooth cleaning product performance evaluation method, the tooth cleaning product performance evaluation system and the tooth cleaning product performance evaluation method are used for evaluating the performance of a tooth cleaning product, the tooth cleaning product performance evaluation system and the tooth cleaning product performance evaluation method comprise a clamp device and a tooth simulation device, the clamp device is used for clamping a toothbrush. The tooth simulation device simulates a scene that a user holds a toothbrush, the tooth simulation device provides one or more tooth models, and the clamp device adjusts the position of the toothbrush until a brush head of the toothbrush is in contact with the tooth models, so that the toothbrush cleans the tooth models, simulates a real tooth brushing working condition and tests the performance of the toothbrush.

The invention discloses a test system and a test method for testing the performance of digital printing ink, belonging to the technical field of digital printing ink performance. The invention comprises an ink supply unit, a nozzle, an ink drop observer, a control unit and a droplet suction device; the ink supply unit is connected with the nozzle through an ink tube, and is used for supplying ink to the nozzle; the control unit is electrically connected with the nozzle, and is used for controlling The nozzle sprays ink; the control unit is electrically connected to the ink drop observer, which is used to control the ink drop observer to observe and record the shape of the ink droplets ejected from the nozzle, and transmit the recorded information to the control unit; the droplet suction device is located in the nozzle The bottom of the nozzle is used to collect ink droplets ejected from the nozzle and droplets generated during inkjet. The invention quantitatively evaluates the performance of the ink by testing the ejection speed, the shape of the ink drop, the volume of the ink drop and the ejection stability for a long time, the data is accurate and reliable, the cost is economical, and there is no waste of substrates and ink.

The invention relates to a testing machine, in particular to a cloth wear resistance testing machine. The technical problem of the present invention is to provide a cloth wear resistance testing machine that can replace manual testing of cloth wear resistance, avoid hand soreness from affecting subsequent tests, and can also collect and process cloth scraps that fall during testing. A cloth wear resistance testing machine, including a frame body, legs, a first bearing seat, a first rotating shaft, a driving motor, a roller, etc.; A first bearing seat is embedded in the middle of the middle and the bottom. In the present invention, the cloth is fixed in contact with the ring-shaped grinding plate through the fixing device, and the wear resistance of the cloth can be tested by the ring-shaped grinding plate by starting the overdrive motor. Soreness interferes with subsequent tests.

The invention provides a sealed liquid differential pressure layered settlement gauge and an embedding and measuring method thereof. The settlement gauge comprises a settlement plate, a top hydraulic sensor, a middle hydraulic sensor group and a bottom hydraulic sensor. The top hydraulic sensor is fixedly installed below a settlement plate through a flange and comprises a liquid tube with a sealed tube opening. The middle hydraulic sensor group comprises at least one hydraulic sensor and anchor flukes fixed on the hydraulic sensor. A liquid tube of the first hydraulic sensor in the middle hydraulic sensor group is communicated with a liquid tube of the top hydraulic sensor through a liquid three-way tube. The bottom hydraulic sensor is fixedly installed on a hole bottom fixing device, and a liquid tube of the bottom hydraulic sensor is communicated with a liquid tube of the last hydraulic sensor in the middle hydraulic sensor group through a liquid three-way tube. The liquid differential pressure is used as the tested physical quantity, the liquid tubes of the sensors are sealed and isolated from the outside, and adaptive capacity is strong. The sealed liquid differential pressure layered settlement gauge is a testing structure with flexible connection in the vertical direction and avoids test influence caused by lateral bending.

The present invention discloses a magnetorheological damper high-speed heavy punch test system. The system comprises a guide rail, a heavy punch, a damper installation base, an ejection mechanism andan adjustable damping mechanism. The guide rail is obliquely arranged, the heavy punch and the damper installation base are slidingly installed at the guide rail in an unidirection mode, the ejectionmechanism is arranged at the upper side of the guide rail and gives initial kinetic energy with adjustable size to the heavy punch, the adjustable damping mechanism is arranged at the lower side of the guide rail and gives adjustable damping force to the damper, the inclination angle of the guide rail in a free state can be arranged in a mode of force balance in an inclination direction; and the magnetorheological damper high-speed slug test system further comprises a speed sensor configured to detect an initial speed corresponding to the initial kinetic energy of the heavy punch. The magnetorheological damper high-speed heavy punch test system is simple in structure, flexible and convenient in test data and easy to obtain accurate and real energy absorption rate in the collision process and provides reliable basis for the test of later optimization of the buffer performance of a magnetorheological bumper.

The invention relates to a hardness tester, in particular to a granular tablet hardness tester. The technical problem to be solved is how to design a granular tablet hardness tester that can clean up the residual medicine powder after the last test to ensure the test effect. A granular tablet hardness tester, including a base, a mounting plate, a first slider, a disc sliding sleeve, a disc sliding rod, etc.; the top of the base is connected with a mounting plate, and the front side of the mounting plate is provided with a right-angled triangular groove and a chute. The chute is located above the right-angled triangular groove, the first slider is slidably connected to the chute, the first slider is connected to the disc sliding sleeve, the disc sliding sleeve is slidably connected to the disc slider, and the disc slider The top runs through the disc sliding sleeve. In the present invention, the tablet is placed on the loading plate, and after the tablet is placed, the awl head can be driven by the driving assembly to knock the tablet, so that the hardness test of the drug can be performed.

The invention discloses an acid-resisting test system used for fracturing propping agents. The acid-resisting test system comprises an acid preheater, a tester, a press, an acid storage tank, an acid metering pump and a cooler. An open material containing cavity is formed in a shell of the tester, and a liquid inlet and a liquid outlet are formed in the shell and communicated with the material containing cavity. The tester further comprises a gland suitable for being inserted into the material containing cavity, the gland is matched with the bottom and the inner wall of the material containing cavity to form a space containing the fracturing propping agents, and a material clamping plate is arranged between the gland and the bottom of the material containing cavity. The press is suitable for exerting pressure on the fracturing propping agents through the gland. Acid liquor of the acid storage tank is pumped into the acid preheater through the acid metering pump for being heated, after being heated, the acid liquor enters the material containing cavity through the liquid inlet to be used for acid-resisting tests. The used acid liquor returns to the acid storage tank for being used in a recycled mode after cooled by the cooler. The system can be used for the acid-resisting tests of the fracturing propping agents in a simulated high-temperature high-pressure acid environment of underground strata.

The invention discloses an air suspension reversing frame of a static balancing machine and an air suspension type static balancing machine. The air suspension reversing frame of the static balancing machine is adopted to support a test frame; the space between a reversing shaft and an air suspension shaft sleeve is filled with air with certain pressure, so that the reversing shaft and the air suspension shaft sleeve are separated, an air suspension structure is integrally formed; a flexible connecting mechanism is adopted, a double-range sensor is arranged, so that the installation of a tested body is completed at one time on the same test bench, the high-precision measurement of the static unbalance of the tested body is realized under the condition that the installation reference of the tested body is not changed; and a damping mechanism is arranged, so that the vertical vibration of the test frame generated after the rotating mechanism rotates is effectively reduced. The air suspension reversing frame is good in structural stability and high in adjustment and measurement precision.

The present invention provides a fuel bundle two-phase flow fluid-solid coupling test circuit, comprising a fuel bundle two-phase flow fluid-solid coupling test bench, a check valve, a flow meter, a first control valve, a circulation pump, an open water tank, Second control valve, solenoid valve, pressure gauge, pressure reducing valve, air tank, dryer, air compressor, first pipeline, second pipeline and third pipeline; one end of the first pipeline is connected to an open water tank , one end of the second pipeline is connected to the open water tank, one end of the third pipeline is connected to the air compressor, and the other ends of the first pipeline, the second pipeline and the third pipeline are all connected to the fuel rod bundle two-phase fluid-solid Coupling test bench; the first pipeline is equipped with a second control valve; the second pipeline is equipped with a circulation pump, the first control valve, and a flow meter; the third pipeline is equipped with a dryer, an air tank, a pressure reducing valve, and a pressure gauge , solenoid valve, check valve. The invention can test the fluid force and vibration state of the fuel rod bundle while testing the flow state between the passages of the fuel rod bundle.

An automatic detection press-down device for PCBA test mainly comprises a driver, driver mounting bases at the two sides, a memory bar, a DIMM slot and toggle switches; the toggle switches are positioned at the two ends of the DIMM slot respectively and can rotate partially relative to the bottoms of the two ends of the DIMM slot; and the driver comprises a main drive unit in the middle and side push drive units at the two sides. The two sides of the automatic detection press-down device are provided with DIMM slot buckle mounts respectively, the main driver is used to push the memory bar to rise and fall, the side push drive units is used to control running of the DIMM slot buckle mounts and further to control automatic locking and unlocking of the toggle switches, it is not required to control the toggle switches manually, machine test is more convenient, the condition that labor force output has to be adjusted manually is changed, machine operation is automatic, and the labor cost of enterprises is reduced.

The invention belongs to the technical field of microwave testing, and in particular relates to a testing device for ultra-low temperature complex electromagnetic parameters of microwave dielectric materials by waveguide method. The test section waveguide with a rectangular cross section is set horizontally, the microwave dielectric material to be tested that can transmit microwaves is placed in the middle of the test section waveguide cavity, and the test section waveguide cavity is separated from the middle, and the two ends of the test section waveguide are respectively set There is a section of temperature-isolated waveguides of the same size: temperature-isolated waveguide 1 and temperature-isolated waveguide 2, the outer end of temperature-isolated waveguide 1 is provided with waveguide-coaxial converter 1, and the outer end of temperature-isolated waveguide 2 is provided with waveguide-coaxial converter 2 A liquid nitrogen refrigeration chamber is arranged around the outer side of the test section waveguide, a vacuum heat insulation chamber is arranged around the outer side of the liquid nitrogen refrigeration chamber, and an insulation layer is arranged outside the vacuum heat insulation chamber. The invention adopts the testing principle of the rectangular waveguide method, and can realize complex electromagnetic parameter testing of dielectric materials from room temperature to ultra-low temperature -165°C and below.

The invention discloses a device and method for measuring the adhesion strength of gel-type leakage plugging materials and rock walls. The device includes a rotating part and a measuring housing connected with the rotating part; A T-shaped blocking rod is provided, and one end of the T-shaped blocking rod passes through one side of the measuring housing and a displacement measuring part for measuring the displacement of the T-shaped blocking rod is provided; the other side of the measuring housing is provided with a sealing plate. In the present invention, the hollow rock core is used as a container to directly contact the gel plugging material to be tested, and the internal pressure is directly injected by injecting oil, so that the gel plugging material to be tested can obtain driving force, and when the gel plugging material to be tested When the lost circulation material moves relative to the hollow core, the adhesion strength between the gel-based plugging material to be tested and the rock wall can be calculated, which is of great significance for clarifying the plugging mechanism of the gel-based plugging material and solving the problem of lost circulation.

The invention discloses a branch test connection device for high-speed data acquisition equipment. The connection device comprises an equipment main body, data lines and connectors. The connectors arearranged on the left portions of the data lines and connected with an interface in the right portion of the equipment main body; fixing frames are fixed to the front portion and the rear portion of the right end of the equipment main body through screws; U-shaped frames are arranged on the inner sides of the fixing frames; the left portions of the U-shaped frames are clamped in the fixing framesthrough installation blocks; and the U-shaped frames make contact with the right end of the equipment main body. According to the invention, through cooperation of the fixing frames, mounting blocks and fastening bolts, the U-shaped frames can be conveniently and quickly disassembled and assembled; through cooperation of the U-shaped frames, the mounting plate, a positioning plate, fixing blocks and a long bolt, a connector is conveniently positioned, poor contact is prevented from influencing the test; through first magnets, second magnets and an end cover, dust prevention is conveniently performed on the interface in the equipment main body; dust falling is prevented from influencing use; use is convenient; and connection stability is good.