15results about How to "Simple requirements" patented technology

The invention discloses a novel bearing inner and outer ring pressing die, which relates to the technical field of bearing press fitting, and comprises a bearing body, an outer ring pressing die body for carrying out outer ring press fitting on the bearing body, and an inner ring pressing die body for carrying out inner ring press fitting on the bearing body, the anti-inclination assembly is arranged on the outer ring pressing die body and used for preventing inclination of the bearing body in the press-fitting process, the adjusting assembly is arranged on the inner ring pressing die body and used for adjusting the press-fitting state of the bearing body, and the anti-inclination assembly comprises a fixing ring fixedly connected to the inner wall of the outer ring pressing die body; the two through holes are slidably connected with anti-roll rods, and the ends, close to the bearing body, of the two anti-roll rods are rotationally connected with anti-roll balls. According to the novel bearing inner and outer ring pressing die, the outer ring pressing die body is used for providing straightening, limiting and guiding functions, the inner ring pressing die body is used for providing the limiting and guiding functions, and meanwhile, the bearing body can be effectively straightened under the matching action of the anti-inclination assembly.

The present invention relates to an expansion adhesive sheet comprising: a base material; two thermal expansion adhesive layers respectively disposed on both sides of the substrate; the expansion bonding sheet is characterized in that the expansion bonding sheet further comprises a release paper layer which is arranged on the surface of one thermal expansion bonding agent layer; and the release paper is double-sided release paper. The invention has the following beneficial effects: during winding, only one layer of release paper (the upper layer or the lower layer) is peeled off, so that the molding equipment is simplified, the winding can be carried out at a higher temperature without using measures for reducing the product performance, and the adhesion is avoided during winding; compared with a five-layer structure attached with non-woven fabric or sprayed with a release agent, the operation convenience is improved, and the requirements of instruments and equipment are simplified; according to the scheme, the degree of freedom of adhesive formula design can be improved at the same time, and the softening point of the expansion bonding layer can be reduced on the premise of ensuring that the expansion bonding layer is non-viscous at room temperature.

The invention relates to a silicon-based negative electrode material based on metal oxide coating and preparation and application thereof, and a preparation method of the material comprises the following steps: S1, putting a silicon-based material into a solvent for ultrasonic dispersion to obtain a uniform suspension; s2, adding a metal oxide precursor into the suspension obtained in S1, and carrying out hydrolysis or condensation reaction to generate a continuous metal oxide coating layer on the surface of the silicon-based material in situ; and S3, after the reaction is finished, centrifugally separating, washing and drying the obtained product to obtain the silicon-based negative electrode material, namely a target product. Compared with the prior art, the method provided by the invention is simple in process, low in cost and good in repeatability, and the obtained coated silicon material has excellent structural stability and electrochemical performance and has a wide application prospect in high-energy-density lithium ion batteries and all-solid-state batteries.

The invention discloses a semi-conductive high polymer material analysis method and device, and relates to the technical field of high polymer material analys.The method specifically comprises the steps that a charging roller and an OPC simulation roller in functional components of an imaging system are coaxially clamped, and a rotating mechanism is arranged for driving; carrying out resistance detection on the charging roller, and carrying out halation detection on the charging roller and the OPC simulation roller; reading a resistance value, observing and recording halation rays, and judging the type and dispersion performance of the conducting medium by a halation color judgment method; according to the analysis method provided by the invention, materials of various parts made of high-molecular polymers can be rapidly analyzed by measuring and observing corona wires through a simple test method, the requirements of analysis test equipment are simple, the test process is convenient and easy to implement, and analysis results can visually feed back material characteristics; a new analysis solution thought is provided for analysis of the high polymer material, and the convenience of analysis and test of the high polymer material in digital printing equipment is greatly improved.

The invention discloses a method for preparing an information storage material based on a photochromic effect, belonging to the technical field of inorganic photochromic functional luminescent materials. The information storage material based on a photochromic effect of the invention has the chemical formula: A2Ge4O9:xBi 3+ ; Wherein, A includes one or more of Li, Na, K and Rb; x is Bi 3+ The doping amount is 0≤x≤0.08. The surface color of the information storage material of the present invention changes from white to yellow under ultraviolet light, and the color can be reversibly changed, so that information can be written, stored and erased based on the photochromic effect.

The utility model relates to the technical field of constructional engineering, in particular to an outer wall waist line waterproof structure which comprises an outer wall body and a waist line arranged on the outer side of the outer wall body, the waist line is of a one-stage or multi-stage step downward structure, an arc-shaped chamfer is arranged at the connecting position of the first-stage step structure and the outer wall body, and the outer wall waist line waterproof structure further comprises a waterproof roll layer. The waterproof roll layer covers the outer wall body located on the upper portion of the waist line of the step structure, the arc-shaped chamfer, the top face of the first-stage step structure of the waist line and the step faces of the other step structures of the waist line. Compared with the prior art, the waterproof structure has the advantages that the waist line has no strict gradient limitation, the step structures can be designed into any number, and the width of the upper step structure is larger than that of the lower step structure, so that the waterproof structure is more flexible in design, simple in requirement and wider in application range.

The application provides a content extraction method based on cell membrane capacitance change, and belongs to the field of cell-level micromanipulation technology, and comprises the following steps: S1, a change relationship between cell membrane capacitance and cell membrane surface area is established; S2, a change relationship between cell membrane surface area and volume is approximately established; S3, high-resistance sealing and membrane rupture of cells are completed, constant voltage cell content extraction operation is performed, and cell membrane capacitance values in the extraction process are obtained in real time through capacitance fitting; S4, content extraction amount is estimated; S5, actual cytoplasm extraction amount is calculated based on a rotary L-shaped electrode, the relationship model established in S2 is corrected, and finally, quantitative extraction of cell contents is realized. The application utilizes an electrical model of cell membrane capacitance, realizes real-time feedback of cell content extraction amount, realizes quantitative control of content extraction, can realize a cytoplasm extraction success rate of 62.5% in the case of a whole cell patch clamp structure, and the average cytoplasm extraction amount control error is less than 6% of the total cell volume.

The application discloses a kind of high-strength plastic β titanium alloy strip and whole-process preparation method, the β titanium alloy strip is composed of the following mass percentage components: Cr 7.7%~8.3%, Mo 4.9%~5.5%, V 4.9%~5.5%, Al 2.7%~3.3%, Fe≤0.20%, C≤0.03%, N≤0.02%, H≤0.010%, O≤0.10%, and the rest is Ti;The preparation method comprises: one, forging;Two, hot rolling;Three, cold rolling;Four, heat treatment.The β titanium alloy strip and whole-process preparation method of the application are overall planning from component design to final heat treatment whole-process procedure, improve production efficiency, shorten preparation time, and the β titanium alloy strip solid solution state microstructure is equiaxed β fine grain structure, strength-plasticity matching is high, horizontal longitudinal organization performance is uniform, with excellent comprehensive mechanical properties, applicable to metal processing field.

The application discloses a kind of preparation methods of toughening traffic 6016 aluminum alloy, belong to metal material preparation technical field;Including the following steps: alloy uses the aluminum ingot with purity more than 99.9%, intermediate alloy Al-20Si, Al-10Mg, Al-50Cu, Al-10Mn, Al-20Cr, Al-20Zn, Al-20Er, Al-5Ti-B, according to the proportioning of element mass ratio Si:Mg:Cu:Mn:Fe:Cr:Zn:Ti:Er=(1.0~1.5):(0.25~0.6):(<0.20):(<0.50):(<0.10):(<0.20):(<0.15):(0.15,0.30,0.45) smelting, the cast ingot that smelts is homogenized annealing, rolling is obtained The plate material with the thickness of 1mm, then after heat treatment obtains the aluminum alloy plate of T4P state.The application adds rare earth element Er, heat treatment toughening traffic 6016 aluminum alloy, so that aluminum alloy has preferable plasticity under the premise of maintaining high hardness and high strength, is expected to improve the strength and plasticity of 6016 aluminum alloy in practical application, conducive to the wide application of 6016 aluminum alloy.

The utility model discloses a non-visual automatic protection frame device, and belongs to the technical field of protection technologies in the debugging and running process of a robot. The robot comprises a frame, the frame comprises an upper layer and a lower layer, the upper layer is provided with a driver, a controller and a power source, the lower layer is used as a robot activity space, and a movement mechanism is arranged at the bottom of the frame; the top of the protection mechanism is connected with the top of the frame, and the bottom of the protection mechanism penetrates through the upper layer of the frame to be connected with a robot; the controller, the driver, the protection mechanism and the movement mechanism are in communication connection; according to the utility model, the tension sensor and the horizontal sensor are ingeniously combined, so that the spatial position of the robot relative to the protective frame can be accurately sensed. By means of the innovative design, the position of the protection frame can be automatically adjusted, it is guaranteed that the robot is located in a safety protection center area all the time, and the protection effect is greatly improved.

This invention belongs to the field of aviation propulsion system technology and discloses a method for operating a hybrid lift and thrust system for a low-altitude vertical takeoff and landing aircraft. The system includes a low-pressure compressor, a starter / generator, a high-pressure compressor, a gas turbine, an adjustable thrust nozzle, a PEM fuel cell, an electric motor, and a lift propeller. The low-pressure compressor, starter / generator, high-pressure compressor, and gas turbine are coaxial. The compressed air from the low-pressure compressor is divided into two paths. One path of compressed air enters the high-pressure compressor for further pressurization and then enters the main combustion chamber, which is connected to the gas turbine at the rear end. The other path of compressed air from the low-pressure compressor enters the cathode inlet of the PEM fuel cell and the adjustable thrust nozzle. The PEM fuel cell supplies power to the electrical busbar, and the reaction end of the PEM fuel cell is connected to a mixer. The exhaust port of the gas turbine is connected to the mixer, which mixes the exhaust gas from the gas turbine and the exhaust gas from the PEM fuel cell before supplying it to the adjustable thrust nozzle at the rear end to provide thrust. The starter / generator is connected to the electrical busbar, which is connected to the electric motor, and the motor shaft drives the lift propeller. This invention can be used in manned and unmanned aircraft that employ rotor takeoff and landing and thrust cruise, reducing the number of shafts used, simplifying the system structure, reducing the demand for H2, and increasing system operating time.

The invention discloses a method for preparing p-cymene, which belongs to the field of cymene preparation. The method for preparing p-cymene comprises the following steps: loading a prepared activated carbon-loaded ZnSO4 / NiSO4 catalyst into a reactor, heating the reactor, and continuously passing a mixed olefin whitening liquid into the reactor using an inert gas, and collecting the liquid after the reaction from the upper outlet of the reactor to obtain p-cymene. The method for preparing p-cymene of the invention does not use precious metals, and the catalyst is cheap; the catalyst has good selectivity, and the selectivity of p-cymene reaches more than 99%; the requirements for raw materials are simple, and the mixed olefin whitening liquid of the factory can be used as the raw material, thereby improving the utilization rate of the raw materials and reducing the cost.

The invention discloses an offline payment on-site proving method and system and a storage medium, relates to the technical field of block chain payment, and can solve the payment security problems of modern payment, money laundering, disputes and the like caused by the fact that a payment behavior cannot be strongly bound with physical on-site in an existing scanning payment process. According to the scheme, the method comprises the following steps: a terminal generates a two-dimensional code containing a session identifier and a Bluetooth connection parameter; the user side scans the two-dimensional code to obtain the session identifier and the Bluetooth connection parameter, and establishes a Bluetooth communication link with the terminal based on the Bluetooth connection parameter; the terminal and the user side carry out bidirectional challenge-response verification based on the Bluetooth communication link, and after the verification is passed, the user side generates a shared session key based on the session identifier, the exchanged challenge value and the feature information of the Bluetooth communication link; and after the user side uses the session key to carry out cryptographic calculation on the binding field of the session identifier, generating an on-site proof, and carrying out a transaction service after the on-site proof is verified to be valid.

The invention belongs to the technical field of helicopter rotor system digital testing, and relates to a helicopter composite blade root thickness and extension digital detection method. The method comprises the following steps: determining a measurement area of a paddle root or a span; according to different measurement areas, a helicopter composite blade digital comprehensive detection system is adopted to measure the corresponding blade root thickness or blade extension length; the digital comprehensive detection system for the helicopter composite blade comprises a special positioning tool, a movable ground rail, a linear laser measuring instrument, a measuring system and a robot auxiliary device.

The present invention relates to a soft magnetic AC magnetic property measuring device and method, comprising a host computer, a control unit, an excitation mechanism and a flat high-temperature atmosphere furnace, wherein the control unit is wirelessly connected to the host computer, the control output end of the control unit is connected to the control input end of the excitation mechanism, a magnetic parameter sample is arranged in the excitation mechanism, the excitation mechanism and the magnetic parameter sample are arranged in a shell, and the flat high-temperature atmosphere furnace is connected to the shell to prevent the magnetic parameter sample from being oxidized under high temperature conditions. The present invention obtains a more real and accurate magnetic field condition by obtaining the magnetic flux lost in the open circuit part through RCP coil compensation, and the measuring device has the characteristics of convenient operation and accurate results, thereby realizing automation.