160results about How to "Strong economic applicability" patented technology

The invention discloses a hydraulic support plunger outer surface laser cladding repairing method. The hydraulic support plunger outer surface laser cladding repairing method comprises the following steps that firstly, turning is carried out on the outer surface of a hydraulic support plunger to be repaired to remove a fatigue layer and an electroplated layer on the outer surface of the hydraulicsupport plunger, and the outer surface of the hydraulic support plunger is washed; secondly, iron-base alloy powder for laser cladding is put into laser cladding equipment, the laser cladding equipment is used for carrying out laser cladding on the outer surface of the hydraulic support plunger, and a laser cladding layer is formed; thirdly, rough turning is carried out on the hydraulic support plunger which is subjected to laser cladding; fourthly, abrasive machining and polishing treatment are carried out on the hydraulic support plunger which is subjected to rough turning, and the roughnessRa of the outer surface of the polished hydraulic support plunger is smaller than or equal to 0.4; and fifthly, checking and flaw detection are carried out on the outer surface of the polished hydraulic support plunger, and laser cladding repairing of the outer surface of the hydraulic support plunger is completed after it is ensured that no defect exists. The laser cladding layer formed throughthe repairing method is high in hardness, large in thickness and high in corrosion resistance and longer in service life.

The invention relates to a thermoplastic elastomer toughened epoxy resin, its preparation and its application, which belongs to the technical field of changing the physical index of epoxy resin. The raw materials possess the following weight proportion: 1) 100 parts of epoxy resin, 2) 15-40 parts of curing agent, 3) 2-20 parts of thermoplastic elastomer, 4) 5-100 parts of compatilizer and 0.5-5 parts of auxiliary agent; the compatilizer employs one or more selected from rosin and modified rosin, petroleum resin, coumarone indene resin, aromatic oil, naphthenic oil and solvent oil, the auxiliary agent employs one or more selected from calcium stearate, zine stearate and EBS. The method of the invention solves the compatibility of the thermoplastic elastomer and epoxy resin, and effectively improves the brittleness of epoxy resin, the property of a solidified substrate is capable of adjusting, and the manufacturability is capable of adjusting; the product of the invention has the advantages of environmental protection, good security and good economic applicability.

The invention provides a method for repairing and remanufacturing the surface of a piston rod of a hydraulic cylinder or the outer surface of an intermediate cylinder for coal mines. Aiming at remanufacturing after the surface of the piston rod of the hydraulic cylinder or the outer surface of the intermediate cylinder for the coal mines is damaged and fails, the long-term practice is combined, a metal wire adopting the specific metal powder proportion is creatively designed to serve as a powder core wire, and namely the metal wire is formed by wrapping the metal powder with Cr, Ni and Fe as the main ingredients through a stainless steel foil layer; based on the arc thermal spraying process method, the surface is repaired and remanufactured creatively, and on the premise that the corrosion resistance and the hardness of the repaired layer of the surface are equal to those of the surface treated through the surface laser cladding technology, consideration is given to the good economic applicability and the good practical production efficiency; an existing electroplating technology can be completely replaced, and the method has the wide application and popularization prospects in repairing of the piston rod of the hydraulic support oil cylinder and the intermediate cylinder for the coal mines.

The invention discloses a sludge anaerobic-digestion method based on combined pretreatment of thermal hydrolysis and chemical tempering. The sludge anaerobic-digestion method comprises the following steps: (1) adding water into sludge to dilute or concentrate, adding an alkaline substance, stirring, adjusting pH value to be alkaline and then standing; (2) carrying out thermal hydrolysis reaction on the sludge obtained in the step (1), adding a first acid substance after hydrothermal reaction, stirring, adjusting the pH value to be neutral, then adding a second acid substance, stirring, adjusting the pH value to be acid, finally adding the alkaline substance, stirring and adjusting the pH value to be neutral; and (3) carrying out anaerobic-digestion treatment on the sludge obtained in the step (2). The sludge anaerobic-digestion method disclosed by the invention has the advantages that the gas producing rate of anaerobic digestion of the sludge can be obviously increased, the gas producing amount and the produced-methane content of anaerobic digestion of the sludge are increased, sludge stabilization and the system stability condition are good, the energy consumption is low, the economic applicability is strong, the application bottleneck of anaerobic digestion of the sludge is broken through, and the sludge anaerobic-digestion method can better realize harmless, recycling and reducing treatment for the sludge when being used for treating municipal sludge.

The invention provides a data service system comprising a server end and a plurality of client ends, and the server end is used for managing data sent by the client ends; the server end comprises a data receiving module used for receiving data sent by the client ends, a data verifying module used for receiving data sent by the data receiving module and verifying the received data, a data assessment module used for receiving verified data sent by the data verifying module and assessing the verified data, a data pricing module used for pricing assess data based on an assessment result given by the data assessment module, a data issuing module used for issuing data priced by the data pricing module, a data storage module and a data management module; the data storage module is used for storing data in the data receiving module, the data verifying module, the data assessment module and the data pricing module; the data management module is used for managing the data. The data service system can be used for effectively managing data of the client ends.

The invention relates to a leaf blow suction machine with wind pipes which can be sheathed and wheels which can be dismounted. The leaf blow suction machine comprises thee parts, i.e. a machine body, the wind pipes and the wheels, wherein the wind pipes comprise an upper wind pipe and a lower wind pipe, the upper wind pipe and the lower wind pipe can be connected together in a dismountable way, the upper wind pipe is provided with a passage in which the lower wind pipe can be inserted, and the lower wind pipe which is dismounted can be inserted in the passage of the upper wins pipe, thereby sheathing together the upper wind pipe and the lower wind pipe; and the machine body is a single whole, the upper wind pipe is connected and fixed with the machine body in a buckling way, and a control switch is installed on the handle of the machine body; and the wheel assembly can be installed on the lower wind pipe dismountably. The blow and suction machine not only can greatly reduce the packing size and lower the transportation cost, but also has convenient disassembly and assembly, shapely appearance, high working efficiency and economic serviceability, and can adapt to the new assessment criteria more effectively.

Disclosed is a morphology controllable nanometer CeO2 preparation method. Hexahydrate cerous nitrate and a citric acid are mixed to obtain a mixture, the mixture is stirred in a magnetic force heating stirrer, the potential of hydrogen (pH) of the mixture is adjusted to 2.0 to 2.5 by aqueous ammonia, the mixture is placed in water bath to be reacted and dried in an air-blowing drying oven, then the dried mixture is placed in a muffle furnace to be calcined at different temperatures from 200 DEG C to 700 DEG C to obtain a product, and the calcined product is ground in a agate mortar to obtain a faint yellow CeO2 powder. According to the method, grain growth kinetics and sol-gel method principles are utilized, the different calcination temperatures are controlled in the process of forming the material, so that the material can be synthesized at low temperature, the energy is saved, the agglomeration during material synthesizing is reduced, the production process is simplified, and the average particle diameter of the formed nanometer oxide ceric oxide particle is smaller with the increasing of the calcination temperature.

The invention provides a polymer surface charge and trap level characteristic measuring device and method and relates to the technical field of surface charge measurement of solid insulating materials. The measuring device comprises a high-voltage power source, a protection resistor, a low-voltage power source, a sealed air chamber, a high-voltage charging device and a potential measuring device.The measuring method comprises the steps: firstly, the high-voltage power source is connected with a needle electrode through the protection resistor, a gate electrode is connected with the low-voltage power source, charges are injected into a test sample slice of the insulating material, a power supply is cut off after charging finishes, a probe moving guiding rod is utilized to move a probe to be above a test sample, rotation of a rotary connection guiding rod is matched to drive the test sample to achieve full-plane potential measurement on the test sample, a change curve of the potential along with resolution time is drawn, and a mathematic formula is utilized to calculate and analyze charge trap level distribution of a gas-solid interface. The measuring device and method disclosed bythe invention can be suitable for surface charge measurement and trap level distribution researches of gas-solid interfaces under different voltage form types, different solid insulating materials anddifferent insulating gases; a measuring range is wide.

The invention relates to a calibrating device of a field calibration rainfall sensor. The calibrating device comprises an outer casing and a combined funnel, a counter and two water outlet pipes arranged inside the outer casing, wherein the top surface of the outer casing is provided with a great/small rain intensity water injection hole capable of simulating rain water flow speed, a reset button inlaid with a counter liquid crystal display screen and the counter as well as a conducting wire plug jack; the upper opening edge of the combined funnel is fixedly connected with the inner side circumference of the top surface of the outer casing; the inside of the combined funnel is provided with a middle clapboard; the upper end of the middle clapboard is propped on the inner side of the top surface of the outer casing, while the lower end is positioned on the bottom of the combined funnel; the middle clapboard and the combined funnel are formed into an integrated structure; and the bottom of the combined funnel is respectively provided with two water outlet pipes simulating great/small rain intensity flow speed, and the two water outlet pipes simulating the rain intensity flow speed and the combined funnel are formed into an integrated structure. The calibrating device has the advantages that the device has scientific design, compact structure and stable and reliable technical performance and can carry out field calibration of an ombrometer. Therefore, the calibrating device can be widely used in nation-wide observatories, hydrological stations, armies and scientific research institutions to carry out the field calibration of the rainfall sensors.

The invention provides a roof parapet flashing place structure and a construction method of the roof parapet flashing place structure. The structure is arranged below a dripping eave of a parapet and a connecting part between the parapet and a roof finished surface. The structure comprises a separation joint on a roof finished face which is 200-300mm far away from the parapet, sealant embedded in the separation joint, a C20 fine stone concrete filleted corner arranged between the sealant and the parapet, a zinc-plated steel wire net which is fully hung and fixed on a circular-arc-shaped surface of the C20 fine stone concrete filleted corner through a heat-preservation nail, a waterproof mortar layer brushed on the zinc-plated steel wire net, and a felt and two types of oil are paved on the waterproof mortar layer. According to the roof parapet flashing place structure and the construction method of the roof parapet flashing place structure, the quality problem that a roof parapet flashing place easily cracks is solved; and the roof parapet flashing place structure has an anti-cracking function, not only has good whole vertical face effect and good quality, but also has the characteristics of high construction speed and capability of shortening an engineering total work period.

The invention discloses a frequency-domain dielectric spectrum experimental system for a vehicle cable terminal under different temperature conditions. The frequency-domain dielectric spectrum experimental system is composed of a high-temperature heating simulation system, a low-temperature environment simulation system, a temperature control system and a frequency-domain dielectric spectrum test system; and the high-temperature heating simulation system is arranged in a cavity of the low-temperature environment simulation system, and the temperature control system and the frequency-domain dielectric spectrum test system are arranged outside the cavity of the low-temperature environment simulation system. On the basis of the experimental system, a provided experimental method can be used to simulate temperature change in a relatively wide range of the vehicle cable terminal and further conduct frequency-domain dielectric spectrum experiments of the vehicle cable terminal under the different temperature conditions, the economical and applicable performances are higher, and the system and method have significance in detecting and evaluating the insulation aging state of the vehicle cable terminal.

The present invention relates to a ceramic/metal composite material wear-resistant lining plate and a preparation method thereof, and belongs to the technical field of materials. The ceramic/metal composite material wear-resistant lining plate comprises bainite-martensite complex-phase steel inlays, a porous ceramic/metal wear-resistant layer and a fixed base steel plate, wherein the porous ceramic/metal wear-resistant layer is provided with embedding holes, the bainite-martensite complex-phase steel inlays are fixedly embedded into the intermittent holes of the porous ceramic/metal wear-resistant layer, and the porous ceramic/metal wear-resistant layer is fixedly connected to the base steel plate. According to the present invention, the ceramic/metal composite material wear-resistant lining plate has advantages of good impact resistance, good wear resistance, long service life, convenient maintenance, simple production process and cost saving, can be adapted to different impact loads such as the high impact load, the medium impact load and the low impact load, and can effectively reduce the problems of the incapable provision of the characteristics of the material due to the inapparent high-manganese steel processing hardening effect and the great defect generated by the base body material due to the too high stress of the processed and hardened structure.

The invention relates to a sheet leveler, which comprises a main body mechanism, a flat plate mechanism and a driving mechanism, wherein a lathe bed is provided with a front bracket and a rear bracket, a driving roller is positioned on the upper part of a lower gear bracket and is arranged in parallel with a plurality of driven rollers, the driving gear of the driving roller is meshed with the gear of a lower idle wheel, the gear of the lower idle wheel is meshed with adjacent driven rollers, the main gear of the driving roller is meshed with the driven gear of a driving leveling roller, the middle gear of the driving leveling roller is meshed with the gear of an upper idle wheel, and the gear of the upper idle wheel is meshed with an adjacent driven leveling roller. The positions corresponding to one side of the front and rear brackets are provided with a throat shaft roller which is positioned between two adjacent driven rollers and is in the same plane with upper tangent planes of the driven rollers, and the line of the centers of the throat shaft roller and the corresponding driven leveling roller positioned on the upside is vertical to the upper tangent plane of the throat shaft roller. The sheet leveler has the advantages of scientific design, compact structure, stable and reliable performance, and good flat plate effect and applicability to the production and the remodeling of the leveler.

The invention provides a wind driven generator which not only can protect a circuit but also can reduce cost. The wind driven generator comprises a strut, a rotating shaft and a wind wheel assembly, wherein the strut is fixed on the ground, the rotating shaft is fixed on the strut, and the wind wheel assembly rotates around the rotating shaft in the horizontal plane. The wind wheel assembly comprises at least two rotating components. Each rotating component comprises blades and at least one length-adjustable rod, wherein one end of each rod is fixed on the rotating shaft and the other end of each rod is fixed on each blade. When a typhoon comes, the rods in the wind wheel assembly stretch out and draw back in an adjusted mode to reduce the swept area of wind wheels, so that force application is reduced, total output power is lowered, the circuit can be protected, premature overload is avoided, and the effect that the wind driven generator runs safely under poor working conditions such as the typhoon and a violent typhoon is guaranteed; after the typhoon, the rods stretch out and draw back in the adjusted mode to return situ, therefore, the effect that the wind driven generator runs normally and safely again after the typhoon is achieved, the maximum utilization rate of the wind machine is effectively achieved while the mode of thickening the strut is got rid of, cost is reduced, and the wind driven generator has strong economic applicability.

The invention relates to a stainless steel structure and a preparation method thereof, and in particular relates to a corrosion-resistant high-strength 316L stainless steel and a preparation method thereof. The corrosion-resistant high-strength 316L stainless steel comprises solid solution treatment, low-temperature rolling deformation, cryogenic treatment and aging treatment, the novel microstructure is prepared by the method, the nano twin crystal, nanocrystalline and superfine crystal composite structure is prepared, the average grain size is less than or equal to 200 nm, the hardness is 450 -500 HV, and the tensile strength reaches 1200 -1400 Mpa. The corrosion potential E0 of 316L stainless steel prepared by the method is lager than -0. 4V, good corrosion resistance is still kept whenthe 316L stainless steel pitting potential e0 is soaked in 5% nacl solution for 60 days, the novel structure 316L stainless steel has excellent mechanical properties and relatively good corrosion resistance, and can be widely applied to complex application environments such as pressure vessels, ship engineering, nuclear power equipment and the like.

The invention discloses a vortex-induced vibration testing system suitable for multi-oscillator coupled vibration research, and relates to the field of fluid mechanics and experimental facilities. The vortex-induced vibration testing system is formed by three parts of a fixed supporting module, a slidable supporting module and a sliding system; the slidable support module can freely slide on the fixed supporting module, and meanwhile the sliding system can do vertical linear reciprocating motion on the slidable supporting module through a tension spring. The vortex-induced vibration testing system is not only suitable for a single-oscillator vortex-induced vibration test, but also suitable for a two/more-oscillator vortex-induced vibration test under the condition of various arrays. Meanwhile, the system can achieve various configuration forms such as series connection, parallel connection, inclined configuration and series-parallel coupling configuration among multiple oscillators, expands the research range of vortex-induced vibration, and supplies good testing conditions to multi-oscillator coupled wake galloping research.

The invention relates to polysubstituted tetrahydrofuran derivatives and a chemical synthesis method thereof. The chemical synthesis method comprises the following steps: carrying out one-step reaction on raw materials (a diazo compound and a 3-hydroxyl-carbonyl flavone compound) in an organic solvent in the presence of a metal catalyst and an additive which is a molecular sieve shown in the specification; and carrying out column chromatography purification to obtain the target product. The chemical synthesis method of the polysubstituted tetrahydrofuran derivatives has the advantages of environmental benefit, step economy, atom economy, diastereoselectivity and high yield; in addition, the reaction conditions are mild, the applicability of the substrate range is wide and the operation is simple and safe. The invention discloses that the polysubstituted tetrahydrofuran derivatives with multiple chiral centers have PTPlB inhibiting effect; and therefore, the polysubstituted tetrahydrofuran derivatives are important chemical engineering, chemical and medical intermediates and have a wide prospect in the field of pharmaceutical chemicals.

The invention discloses biomass methanol diesel oil. The biomass methanol diesel oil comprises the following components by weight: 100 parts of diesel oil, 40-60 parts of fatty acid methyl ester, 15-40 parts of methanol, and 2-20 parts of composite cosolvent. The biomass methanol diesel oil comprises the following steps: adding 100 parts by weight of diesel oil in a reactor with a stirring apparatus, a heating device, a thermometer and a constant pressure funnel, at 25-500 DEG C, adding 2-20 parts by weight of composite cosolvent, stirring the solution uniformly, gradually adding 40-60 parts by weight of fatty acid methyl ester and 15-40 parts of methanol based in the constant pressure funnel, stirring the mixture uniformly to form the homogeneous biomass methanol diesel oil which is thermodynamically stable. The biomass methanol diesel oil is wide in resource, relatively cheap, high in point of flammability, high in cetane number, and good in water resistance, environmental protection, high safety and renewability, and can be used to directly substitute the common diesel oil in fields.

The invention discloses a method for manufacturing a GaAs-based MHEMT device with grid length of 200nm, which comprises the following steps: preparing source and drain electrodes on an epitaxial structure of an MHEMT material; corroding and isolating an active area on the epitaxial structure of the MHEMT material with the prepared source and drain electrodes to form an isolated table top; adopting a thee-layer gluing process and manufacturing a T-shaped grid of 200nm by using electron beam lithography technology, adopting citric acid solution to corrode a grid groove, and evaporating Ti/Pt/Au as grid metal; and photoetching wiring, evaporating the wiring metal Ti/Pt/Au, and carrying out acetone soaking and peeling to finish the manufacture of the GaAs-based MHEMT device with the grid length of 200nm. The method manufactures the GaAs-based MHEMT device with the T-shaped grid structure, obtains superior direct current, high frequency and power performances, and lays a foundation for further researching the high-performance GaAs-based MHEMT device.

The inventio relates to the field of production equipment, in particular to an automatic riveter for a GU lamp cup. The automatic riveter for the GU lamp cup comprises a rack, a conveying device and alamp cup positioning fixture, wherein the rack is sequentially provided with a loading station, a rotary positioning station, a nail loading station, a detecting station, a riveting station and an unloading station along the conveying direction of the conveying device; a rotary positioning device is arranged on the rotary positioning station; an automatic nail loading device is arranged on the nail loading station; an automatic detecting device is arranged on the detecting station; an automatic riveting device is arranged on the riveting station; and an unloading device is arranged on the unloading station. The automatic riveter further comprises a control device connected with the conveying device, the rotary positioning station, the automatic nail loading device, the automatic detectingdevice, the automatic riveting device and the unloading device. The automatic riveter for the GU lamp cup provided by the invention can replace manpower for operation so as to realize automation, andhas the advantages of high production efficiency, less number of employees, safety and reliability in operation, and the like.

The invention relates to a pavement structure for a traffic road. The pavement structure for the traffic road comprises a steel-concrete combined pavement, an asphalt concrete pavement and a base layer arranged on the steel-concrete combined pavement and the asphalt concrete pavement. The steel-concrete combined pavement and the asphalt concrete pavement are laid on the base layer. A road parting line arranged in the extending direction of the road is arranged between the steel-concrete combined pavement and the asphalt concrete pavement. A road shoulder is arranged on the edge of the outer side of the steel-concrete combined pavement. By the adoption of the pavement structure for the traffic road, the passage capacity of the road is improved, and the service life of the road is prolonged.