265results about How to "Large adjustment space" patented technology

A high-isolation 9-layer plastic film with 25-300 microns in thickness and high mechanical and optical performance has an external surface layer and a thermally sealed bottom layer and is prepared through extruding out 9 film layers, overlapping via a single die, and co-extruding out while blow moulding.

The invention relates to a gas oil base invert oil-emulsion drilling fluid and a preparation method, wherein the total volume of gas oil and calcium chloride aqueous solution is 100 parts: the volume ratio of oil phase to water phase is between 95:5 and 70:30, and the concentration of calcium chloride aqueous solution is 5%-saturation; the required gas oil, primary emulsion, auxiliary emulsion and wetting agent are added into a high speed mixing beaker, and are mixed at high speed for 2-5 minutes; the calcium chloride aqueous solution is added and mixed at high speed for 15 minutes; organic soil, calcium oxide and a fluid loss agent are added and mixed at high speed for 10 minutes; and the required amount of barite is added according to density, and is mixed at high speed for 25 minutes. The gas oil base invert oil-emulsion drilling fluid is used for overcoming the defects of the existing gas oil base drilling fluid and solving the problems of the salt resistance and temperature resistance of the gas oil base drilling fluid, and can resist the temperature above 200 DEG C.

The invention discloses a coating composition and an application of the coating composition to a metal base material. The solid content of the coating composition is 40-70%. The coating composition comprises the following components of, by weight, 5-60% of saturation polyester resins, 0-25% of crylic acid resins, 2-30% of crossing-link agents, 20-80% of polyvinyl chloride homopolymer, 0-15% of additives, 0-40% of pigments and the balance dilution solvents, wherein average molecular weight Mn of the saturation polyester resins is 3000-8000, the vitrification temperature of the saturation polyester resins is 10-20 DEG C, the acid value of the saturation polyester resins is 0-5, the hydroxyl value of the saturation polyester resins is 30-90, and the saturation polyester resins are free of neopentyl glycol. The coating composition is free of bisphenol-A diglycidyl glycerol ether (BADGE) and bisphenol A (BPA). According to the coating composition, the polyester resins which meet requirements can be easily obtained, improved space of resin performances is large, 40%-70% of the solid content of final products can be achieved, and a large quantity of organic solvents are saved.

The invention provides a combined clamp which comprises adjustable clamps and a positioning clamp; each adjustable clamp is composed of an X-direction track module, an Y-direction track module and a clamp module; each clamp module is installed on the corresponding Y-direction track module in a sliding manner; each Y-direction track module is installed on the corresponding X-direction track module in the sliding manner; connection devices are arranged at the head and the tail of each X-direction track module; and each X-direction track module has the function of extending a stroke. According to the combined clamp provided by the invention, the X-direction track modules can be mutually spliced, so that the stroke is extended, and the combined clamp can be used in different spaces; each Y-direction track module which walks on the corresponding X-direction track module can have a short-distance Y-direction track, so that after being installed on the corresponding Y-direction track module in the sliding manner, each clamp module can has a larger adjustment space in the X direction and the Y direction, and in this case, more workpieces with different sizes can be clamped; and in addition, after the workpieces are clamped, the combined clamp has the adjustment function.

The invention relates to a yielding type special-shaped beam anchor rope truss roadway support system. A metal net is laid on the surface of the roadway. A yielding type special-shaped beam anchor rope truss is arranged on the coal rock roof or roadside. The yielding type special-shaped beam anchor rope truss comprises special-shaped beams, a yielding device and anchor ropes or anchor rods, wherein each special-shaped beam is provided with a plurality of anchor ropes or anchor rods; the anchor ropes or anchor rods penetrate through the special-shaped beams and the metal net and are anchored into rock layers; and outer anchoring ends of the anchor ropes and anchor rods are provided with the yielding device and a tray for letting the end tips of the anchor ropes and anchor rods to be in contact with the special-shaped beams and exerting yielding action. The yielding type special-shaped beam anchor rope truss roadway support system has the advantages of large surface protecting area and high rigidity and is not easy to become unstable; steel is saved, cost is reduced, and efficiency is improved; strength is high, the performance adjustment space of an entire support is great; and the yielding device plays the action of effective yielding, and coupling yielding support ensures the stability and safety of the entire support system.

The invention provides a method for determining distributed process parameters of a laser peening forming complex curved surface. The method comprises the following steps: establishing a function relationship between a deflection curved surface and an intrinsic moment based on plate shell mechanics, and establishing an optimization model based on partial differential equation constraint by takinga distributed intrinsic moment function as a design variable; according to a curved surface parameter equation or a curved surface coordinate of the workpiece, dispersing a target curved surface, selecting an appropriate optimization algorithm to solve an optimization model, and calculating a distributed natural moment; dividing into a plurality of isoparametric areas convenient for process operation according to the size of the distributed natural moment, and determining a laser peening forming scanning scheme in each area; and establishing a process database corresponding to process parameters and inherent moments through experiments, determining the experiment process parameters, and determining the optimal distributed process parameters in combination with the requirements of residualstress. The method for determining the complex curved surface forming technological parameters is established on the basis of the elastic plate shell theory, and high efficiency and precision are achieved.

The invention provides an electric deposition nickel pottery plating solution and a preparing method thereof. The method is characterized by using electric deposition nickel or nickel-base alloy plating solution as base plating solution, and adding insoluble inorganic nonmetallic micron-grade particles pretreated by non-ionic potyoxyethylene ether surfactant in the base plating solution, so that nickel pottery coating is deposited on a metal matrix. The invention employing non-ionic activator can effectively increase decentrality, stability, evenness and suspension degree of particles, promote codeposition for particles, reduce particle content in the plating solution, improve conductivity of the plating solution, and greatly increase organization performance of the nickel-base composite coating. The invention has advantages of simple process and easy execution.

The invention provides a control method for starting an engine by using a clutch of a deep hybrid power automobile. The method comprises the steps that whether or not starting demands of the engine are met is judged by a starting demand judging module, if yes, the steps of oil filling of a first clutch, the dragging of an engine of the first clutch, oil spraying control of the engine, PI controlling and first clutch closing are sequentially conducted, and the starting of the engine is completed; during the oil filling process of the first clutch, starting process time tes of a current engine is judged, slipping work Q of a unit area of a current first clutch and the starting process time tes of the engine are judged in the steps of the dragging of the engine of the first clutch, the oil spraying control of the engine and the PI controlling, if judging results exceed limiting values, current steps are ceased, whether or not judging failing times are exceeded is judged, and judging stepsof the starting demands of the engine are executed again or a fault mode is entered according to judging results. The method is easy and achievable, and the smoothness of the starting process of theengine can be ensured to prevent the shaking of the automobile.

The invention discloses a hot forming punching device of an automobile energy absorbing structure. The hot forming punching device comprises an assembled female die, an assembled male die, a blank holder and a driving mechanism, wherein the assembled die comprises a plurality of female templates which are tightly and fixedly connected with one another; the assembled male die is arranged below the assembled female die and comprises a plurality of male templates which are tightly and fixedly connected with one another; the blank holder is arranged above the assembled female die and is used for pressing a steel plate to be punched; the driving mechanism is respectively connected with the assembled male die and the blank holder and drives the assembled male die and the blank holder to move downward to perform punching operation; cooling channels are formed in the female templates and/or the male templates. The invention further provides a hot forming punching method of the automobile energy absorbing structure. In the device, as each template is provided with an independent cooling channel, the adjusting space of cooling rate is great, and various strengths and optimal distribution of the strengths can be realized according to the requirements.

A degradable nontoxic seed coating agent comprises basic materials of water-soluble chitosan of 1.0-1.5wt%, gelatine of 0.05-0.1wt%, glycerol of 0.05-0.1wt%, PVA of 1.0-1.5wt% and plant extract of remainder, with the tensile strength of 18.7MPa, elongation of 10.1%, vapor transmission rate of 12.69g.mm/mm2.hr.mmHg, air permeability of (CO2)0.358*10-10ml.cm/cm2s.cmHg, air permeability of (O2)0.215*10-10ml.cm/cm2s.cmHg, hygroscopic rate of 47% and apparent viscosity of 290cp; uses water-soluble chitosan, PVA and plant extract to form seed coating film to not only meet performance requirement of conventional seed coating agents, but remarkably improve performance of film.

The invention provides an automatic slag removal structure of a biomass particle fireplace. The automatic slag removal structure comprises a combustion pool, a slag removal ventilation device and a power mechanism, wherein a plurality of rows of groove-shaped air vents are formed in the bottom of the combustion pool; the slag removal ventilation device comprises a rotary shaft as well as slag removal tooth sheets and ventilation tooth sheets which are installed on the rotary shaft at intervals, and retaining rings are arranged between the slag removal tooth sheets and the ventilation tooth sheets in a cushioning manner so that the slag removal tooth sheets and the ventilation tooth sheets are inserted in the groove-shaped air vents at intervals and in a staggered manner; a speed reduction motor drives the rotary shaft to carry out reciprocating swing motion through a crank-link mechanism; and included angles are arranged between the slag removal tooth sheets and the ventilation tooth sheets in a manner of corresponding to the groove-shaped air vents, and the swing range of the slag removal tooth sheets and the swing range of the ventilation tooth sheets cover the length of the whole groove-shaped air vents during a swing process. The speed reduction motor drives the rotary shaft to rotate to drive the slag removal tooth sheets to swing, slags are crushed and discharged from the groove-shaped air vents, the groove-shaped air vents are dredged, and the ventilation tooth sheets are mainly used for dredging the groove-shaped air vents which the slag removal tooth sheets cannot arrive at, so that the purposes of slag removal and ventilation in a combustion chamber are achieved.

The invention discloses special material and preparation method for injection molding level halogen-free flame retardation wire plug. The special material adopts elastic body and polyolefin resin as base material with expansion type flame retardant, flame retarding synergist, compatilizer, antioxidant and processing agent added. After intensive mixing, the special material is obtained through extrusion and pelleting by a BUSS mixing roll with autoweighing blanking device. The method has good mixing effect, stable compounding formula and high processing efficiency and the particles prepared via the method have even size and bright appearance. The flame retardation rating of produces prepared via the method reaches UL94V-0 level, the tiptop fusion index reaches 55g/10min, and Shore hardness is from 65A to 95A in case of qualified flame retardation level and high fusion index. The composite material provided by the invention is environmental-friendly material which completely meets current international environmental requirements on halogen-free material. The material which not only has good flame retardation performance and flowing property but also enables smooth surface and good felt of products is suitable for manufacturing various injection molding level wire plugs with high flame retardation requirements.

The invention discloses a movable fixture for casting a sand box. The movable fixture comprises a base plate, a clamping plate, a first screw rod, a first nut, a second screw rod and a second nut, wherein the first screw rod and the second screw rod are fixedly arranged at a fixed end of the base plate; the first screw rod is near a clamping end of the base plate; the second screw rod is far from the clamping end of the base plate; the first screw rod and the second screw rod penetrate through screw holes in the clamping plate for coating the clamping plate on the first screw rod and the second screw rod; and the first nut is screwed on the first screw rod above the clamping plate, and the second nut is screwed on the second screw rod below the clamping plate for limiting the clamping plate between the first nut and the second nut. Through a mode of matching two screw rods with the nuts, the fixture has larger adjusting space of a clamping range, and is wider in the application range compared with a U-shaped fixture; and meanwhile, the movable fixture uses the base plate and the clamping plate for clamping the sand box to solve the problem of incapability of inserting in the screw rods for fastening due to disalignment of upper and lower boxes.

The invention discloses high-entropy carbide ceramic nano-powder as well as a preparation method and application thereof. The high-entropy carbide ceramic nano-powder is prepared by pre-pressing metal oxide powder, carbon powder, magnesium powder and NaF into sheets, sintering, washing with water and pickling, wherein the metal oxide powder is prepared from at least four of ZrO2, TiO2, Ta2O5, Nb2O5 and Cr2O3 according to an equal molar ratio. The high-entropy carbide ceramic nano-powder is small in particle size, uniform in metal element distribution and low in oxygen impurity content, and the preparation method of the high-entropy carbide ceramic nano-powder has the advantages of being easy to operate, low in operation temperature, short in reaction time, low in equipment requirement and the like, and is suitable for large-scale industrial production.

The invention relates to a double-lever stretching creep device with a continuously adjustable load and a test method thereof. The device comprises a fixed steel frame, a main load bearing lever, a main load bearing support, an auxiliary load bearing lever, an auxiliary support, a protection device, a constant-load balance weight device, a slidable balance weight device, an adjustable connecting device, a concrete test piece device and a load sensor. The lower ends of the main load bearing support and the auxiliary support are fixedly connected to the fixed steel frame. The main load bearing lever is connected with the main load bearing support by a main bearing; and the auxiliary load bearing lever is connected with the auxiliary support by the main bearing. One end of the main load bearing lever is connected with the fixed steel frame by the concrete test piece device; and the other end of the main load bearing lever is connected with the auxiliary load bearing lever by the adjustable connecting device. According to the r stretching creep device, the gravity load is increased by the double levers and the load amplification factor not lower than a ratio of 10 to 1 can be realized.The whole stretching creep device and scheme are simple and are easy to operate; and the safety and reliability are high.

The invention discloses a large-size and thickness-changing revolved body precast body. The wall thicknesses of the large-size and thickness-changing revolved body precast body change continuously inthe axial direction, the thickness-changing revolved body precast body is formed by winding multiple layers of a thickness-changing precast body which is three-dimensional laminated structural fabric,and the weft direction of the thickness-changing precast body and the central axis of the thickness-changing revolved body precast body are located in the same plane. The invention further disclosesa manufacturing method of the revolved body precast body. The method comprises the steps of 1, determining size parameters of the thickness-changing revolved body precast body to be produced; 2, determining even layering number of the thickness-changing revolved body precast body to be produced, and determining size parameters of the thickness-changing precast body according to the size parametersof the thickness-changing revolved body precast body; 3, weaving the thickness-changing precast body on a weaving machine and completing weaving; 4, winding the thickness-changing precast body on a revolved body core mould continuously to obtain the thickness-changing revolved body precast body. The large-size and thickness-changing revolved body precast body and the manufacturing method thereofhave the advantages that manufacturing is continuous, efficiency is high, and the diameter of the thickness-changing revolved body is not limited.

The invention discloses a crawler belt tensioning mechanism of a crawler belt tractor. The mechanism includes a drive wheel and a driven wheel, the outer parts of the drive wheel and the driven wheelare sleeved with crawler belts, a plurality of thrust wheels are arranged between the drive wheel and the driven wheel, the two sides of the drive wheel and the two sides of the driven wheel are fixedly connected through two blocking plates, and the two ends of one side of each blocking plate are symmetrically provided with pairs of bolt holes. Through guide wheels arranged on a first rotating shaft in a sleeving mode, when the crawler belt needs to be tensioned, the height of a switch regulating electric hydraulic rod is controlled through an electric hydraulic rod arranged on the control panel, the tensioning degree of the crawler belt is thus adjusted, and it is convenient for people to operate the mechanism. The two guide wheels are arranged, when one of the two guide wheels is damaged, the other one of the two guide wheels can continuously tension the crawler belt, through the bolt holes formed in the different positions on the blocking plates, the height of a first fixing block can be adjusted, the regulation space of the electric hydraulic rod is thus increased, and the tensioning operation is easily conducted.

The invention discloses a polyvinyl chloride floorboard substrate and a preparation method thereof, belonging to the technical field of polyvinyl chloride boards. The polyvinyl chloride floorboard substrate solves the problems of high cost and poor quality in the existing product. The polyvinyl chloride floorboard substrate is prepared from 80-100 parts of polyvinyl chloride SG8 resin, 100-120 parts of heavy calcium carbonate, 50 parts of floorboard substrate moldboard reclaimed material, 7-8 parts of foaming regulator 903, 2-3 parts of foaming regulator 902, 2.8-4.9 parts of composite stabilizer, 0.6-1.2 parts of internal lubricant ZB-60, 0.35-0.7 part of polyethylene (PE) wax, 0.2-0.5 part of AP, 0.5-0.8 part of plasticizer OA3, 0.3-0.4 part of heat-release AC (azodicarbonamide) foaming agent, 1.4-1.6 parts of heat-absorption Zhongkai c-2 foaming agent, 2-5 parts of ferrite yellow powder and 2-4 parts of CPE (chlorinated polyethylene). The preparation method comprises the following steps: mixing, plastifying and foaming, and extruding to obtain the finished product. The product can be widely used in office buildings, shopping malls, schools, gymnasia, hospitals and other locations.

The invention provides a wind power sea water desalination integrated system for an isolated grid. The wind power sea water desalination integrated system comprises a power system, a control integrated system and a sea water desalination system. The power system supplies power to sea water desalination devices by optimized dispatching of the control integrated system. The control integrated system is used for controlling the power system. The power system comprises wind turbine generators, at least one energy storage system and diesel generators. The control integrated system is used for controlling the power system. The sea water desalination system comprises the sea water desalination devices. The wind turbine generators, the energy storage systems, the generators and the sea water desalination devices are connected to the micro-grid in parallel. The system solves the problem that energy consumption of traditional sea water desalination industry is high, and the technical problems that an existing sea water desalination device adopting wind power energy needs to use a large number of storage batteries, electricity energy loss is high, maintenance is difficult and cost is high.

The invention provides a method for improving the rolling stability of high-strength IF steel. Five F1-F5 cold rollings are adopted. Before rolling, rolling reduction allocation is adjusted to ensurethat the absolute reduction rate of an F2 rack is 80-85% of that of an F1 rack, and the absolute reduction rate of an F3 rack is 50-55% of that of an F1 rack. Working rollers of the F1-F3 racks are working rollers with convexity. Intermediate rollers have the roller shifting values that secondary set values are increased by 5-10%. The working rollers and the intermediate rollers have the roller bending values that are 10-30% of the secondary set values. Small-bending-force control is realized in a rolling process. The roller bending parameter can be adjusted within a wider space. After wave generation among the racks in the rolling process, plate shape adjustment can be rapidly performed. Stable rolling of strip steel is guaranteed. The operation is convenient. Rolling burst of strip steelor pulling scratch of the rollers are greatly reduced.

The invention discloses a retractable mud dredging system based on a spiral working manner. The system is mainly composed of a rotary mechanism which is arranged on a ship body, close to a ship bottom part, of a midship position, and is used for providing power for rotating a mud digging arm, a hydraulic regulation and control mechanism which is used for regulating and controlling a working state of the mud digging arm, and a reamer mechanism mounted at a tail end of the mud digging arm. A circular disc rotates to drive the mud digging arm to rotate, and the length of the mud digging arm and an angle between the mud digging arm and a plane of a ship bottom base are regulated through utilizing a hydraulic system, so that a reamer moves along a spiral line track; and a mud digging working radius is continuously changed, and the mud digging work of a round surface region is finally realized. Based on the realization of the functions, the design can enlarge the area of single-time working of a mud digging ship, and frequent movement of a ship body of the mud digging ship is reduced, so that the power consumption is reduced and the mud digging efficiency is improved.

The invention discloses a display panel, a manufacturing method and a display device. The display panel comprises a first substrate, a first metal layer formed on the first substrate, a second metal layer as well as a black color resistance layer formed between the first metal layer and the second metal layer. According to the scheme, the black color resistance layer is added between the first metal layer and the second metal layer, and the black color resistance layer has a certain thickness, so that a distance between the first metal layer and the second metal layer is increased, coupling capacitance between the first metal layer and the second metal layer is reduced, then circuit loads of the first metal layer and the second metal layer are reduced, and quality of the display panel is guaranteed.