193results about How to "No bending deformation" patented technology

The invention discloses a bionic caudal fin underwater propeller based on hydraulic artificial muscles. The bionic caudal fin underwater propeller comprises more than two swinging devices, a caudal fin and a hydraulic control unit, wherein each swinging device comprises a T-shaped bracket and two artificial muscles which are symmetrically arranged on the T-shaped bracket; each artificial muscle comprises a telescopic assembly; each telescopic assembly is provided with an elastic hydraulic cavity and a connector which is connected with the elastic hydraulic cavity and the hydraulic control unit, and can linearly stretch and shrink through the liquid filling and drainage of the elastic hydraulic cavity; the T-shaped brackets of all the swinging devices are hinged end to end in sequence; one end of each telescopic assembly is hinged to the corresponding T-shaped bracket, and the other end of each telescopic assembly is hinged to the T-shaped bracket of the next swinging device; when one of the artificial muscles of each swinging device is in a stretching state in the same movement period, the other artificial muscle is in a shrinkage state, and the caudal fin is connected with the last swinging device. The bionic caudal fin underwater propeller has the advantages of simple structure, low cost, high efficiency, easiness in modeling and control, and the like.

A method for diffusion welding a W-Ti alloy target material assembly for film coating, the method comprising: placing powdered raw material of W-Ti alloy target material and corresponding plate blank material to be welded and composited into a hot press mold and then into a hot press sintering furnace; synchronously conducting hot press sintering molding on the target blank and conducting diffusion welding on the target blank and plate blank to obtain a welded composite W-Ti alloy target material assembly; or utilizing the plate blank as a back plate or a transition layer to obtain the W-Ti alloy target material assembly or a composite three-layer structure of W-Ti alloy target material/ transition layer/ back plate. The method realizes synchronization between target blank hot press sintering molding and hot press diffusion welding of target blank and plate blank, with a welding tensile strength of greater than 50 MPa.

The invention discloses a rubberizing device, comprising a base, a pin base, a rubberizing pin on the pin base, a fixing mechanism and a pin protecting mechanism. In an embodiment of the invention, the fixing mechanism comprises a slide block and a clamp; wherein the slide block can be arranged on a guide rail of the base in a sliding way, and drives the pin base and the rubberizing pin to lift up and down to adjust the distance between the fixing mechanism and the pin protecting mechanism; the clamp is connected with the slide block to clamp the pin base. The pin protecting mechanism comprises a conical tube; the conical tube can be separately sheathed on the outside of the rubberizing pin. During the use and maintenance of the rubberizing device, when the distance between the fixing mechanism and the pin protecting mechanism is increased, the rubberizing pin can be moved out of the pin protecting mechanism thus realizing quick replacement and improving the operation efficiency.

The invention relates to a preparation method for an antistatic UV (Ultraviolet) coating and a film forming method of the same, wherein the preparation method for the antistatic UV coating comprises the following steps: firstly, adding an ether solvent into a polythiophene macro-molecular solution; after stirring for dispersing at a high speed, mixing with a UV prepolymer, an active diluent and a photoinitiator and stirring at a high speed till the mixture is uniformly dispersed; and finally adding a solvent. The film forming method of the antistatic UV coating comprises the following steps: coating an antistatic UV curing coating on a plastic thin film, and adopting a low-temperature vacuum drying or cooling, blowing and drying method to obtain a film which is 2-5 mu m thick; and then, firstly, curing for 2 seconds to 1 minute under the condition that the photocuring energy is 100-200mJ/cm<2> and then curing for 2 seconds to 1 minute under the condition that the photocuring energy is 600-1000mJ/cm<2>. The antistatic UV coating provided by the invention is good in stability and the prepared antistatic film further has the advantages of good antistatic property, high hardness, strong scratch resistance and the like.

The invention relates to home building materials, in particular to a method for producing a cabinet board by adopting flame-retardant composite urea resin. The cabinet board structurally comprises decorative paper, a cunninghamia lanceolata veneer, a shaving board and a back board from top to bottom, wherein the periphery of the cabinet board is edged with aluminium alloy; a flame-retardant composite urea resin adhesive is applied between the cunninghamia lanceolata veneer and the shaving board; a flame-retardant composite urea resin adhesive is applied between the shaving board and the back board; a flame-retardant composite urea resin adhesive is also adopted for the shaving board in the cabinet board. The cabinet board manufactured by the method has the advantages of strong water resistance, high bonding strength, low formaldehyde residue and a flame-retardant function. The shaving board in production of the cabinet board is made of waste materials and leftover materials which can not be utilized in the process of manufacturing a multilayered eucalyptus board after rotary cutting of eucalyptus boards, and the leftover materials are utilized, so that the woods can be saved and the production cost of an enterprise can be reduced.

The invention discloses an H-shaped steel production process. The production process includes the following steps that (1) feeding is performed, specifically, coiled materials are put in an uncoiler through a feeding trolley; (2) material guiding is performed; (3) flattening is performed, specifically, strip steel is flattened and delivered to the next procedure through a clamping delivery flattening machine; (4) shearing and butt welding are performed, specifically, the tail of the former coil of strip steel and the head of the latter coil of strip steel are parallelly shorn firstly, and then the two sections of strip steel are welded together; (5) a loop material storage machine is provided; (6) clamping delivery is performed; (7) web S tackling is performed, specifically, the strip steel coming out of a clamping delivery device is rotated by 90 degrees from the horizontal position to form a vertical plate; (8) combined clamping delivery is performed; (9) welding fixing is performed, specifically, a welding fixing device is composed of a wing plate guiding device, a web upsetting device, a welding pressure device, a web limiting roller device and a bending correcting device; (10) welding is performed; (11) cooling is performed; (12) correcting is performed; (13) a pull-out rack is provided; and (14) flying sawing is performed. The H-shaped steel production process has the beneficial effects and advantages that the production efficiency is high, and the product quality is also high.

An aluminum alloy brazing sheet which can be used for brazing in an inert gas atmosphere without using any flux, said aluminum alloy brazing sheet being characterized by comprising an aluminum alloy core material and an aluminum alloy brazing material, wherein one surface or both surfaces of the aluminum alloy core material is/are cladded with the aluminum alloy brazing material, the aluminum alloy core material contains 0.8 to 1.8% by mass of Mn, 0.05 to 0.20% by mass of Mg and a remainder made up by aluminum and unavoidable impurities, the aluminum alloy brazing material contains 6 to 13% bymass of Si and a remainder made up by aluminum and unavoidable impurities, the thickness of the brazing sheet is 0.12 mm or less, and the thickness of the brazing material is 0.012 mm or less. According to the present invention, an aluminum alloy brazing sheet for fluxless brazing use can be provided, which does not undergo the problem of the buckling deformation of a tip part of a fin or the problem of a defect in the formation of a fillet during brazing by heating despite the sheet thickness of as small as 0.12 mm or less of the brazing sheet.

The invention discloses a method for producing total-eucalyptus plywood by adopting moisture-proof composite urea resin. The method comprises the following steps: rotatably cutting wood boards; drying each board; gluing; performing cold pressing for three times; stewing and conditioning; performing hot pressing for three times; cooling and conditioning; determining the thickness of a board blank and sanding the board blank. The key points of the production method disclosed by the invention are that melamine modified urea resin is adopted as a main material of an adhesive and is added with oxidized starch to form a viscous compound, polyvinyl alcohol is taken as a toughening agent, magnesium oxide is taken as an antiaging agent, hexamine and triglycidyl isocyanurate are taken as a curing agent, isobutyl triethoxy silane is taken as a bridging agent, phenolated lignin is taken as a formaldehyde catcher and aliphatic polyurethane acrylate is taken as a moisture-proof agent to prepare the composite urea resin; the composite urea resin has the advantages of being low in formaldehyde residual volume, good in water resistance and good in moisture resistance; therefore, the produced total-eucalyptus plywood is low in formaldehyde residual volume, hard to expand after absorbing water and hard to arch and deform, and a wear-resistant layer is hard to damage.

The invention relates to a method for producing full-eucalyptus plywood with flame-retardant composite urea-formaldehyde resin, comprising the steps of wood board peeling->veneer drying -> gluing -> three times of cold pressing -> standing for curing->three times of hot pressing ->heat dissipation for curing->slab calibrating and sanding. The method is characterized in that the melamine modified urea-formaldehyde resin is used as the main ingredient in the adhesive; the oxidized starch as adhesive compound, the polyving akohol as toughening agent, the hydrogenated rosin as antioxidant, the polyisocyanate as curing agent, i-butyltriethoxanesilane as bridging agent, phenolic lignin as formaldehyde scavenger and flame retardant agent are added together to produce the flame-retardant composite urea-formaldehyde resin. The flame-retardant composite urea-formaldehyde resin has such advantages as littleformaldehyde residue, perfect flame resistance and lowering combustion temperature by internal endothermic reaction so that the full-eucalyptus parquet contains little formaldehyde residue and has good flame-retardant effectin case of fire disasters.

The invention discloses a micro angular swing control reflecting mirror followed by flexible auxiliary arms with superhigh angular sensitivity and high frequency response and belongs to a light beam control device. The micro angular swing control reflecting mirror comprises a mirror frame assembly, a flexible auxiliary arm followed deflection mechanism, a driving mechanism and a control system, wherein the mirror frame assembly is fixedly arranged on a rigid cross beam of the flexible auxiliary arm followed deflection mechanism; an incident light beam is emerged through a reflecting mirror inthe mirror frame assembly; the control system is used for controlling the driving mechanism to push the rigid cross beam, so that an angle of the reflecting mirror is deflected and the control over the direction of an emergent light beam is realized; a displacement sensor is used for feeding back corner information of the reflecting mirror to the control system; the flexible auxiliary arms are additionally arranged at the positions close to a piezoelectric ceramic driving point and are connected with the rigid cross beam through a pivot hinge; the pivot hinge is used for ensuring no deformityof the cross beam during deflection so as to realize the superhigh angular sensitivity; and the flexible auxiliary arms are used for providing a large auxiliary restoring force for the rigid cross beam during deflection to improve the dynamic response speed. The micro angular swing control reflecting mirror has the characteristics of high angular sensitivity and high dynamic track response speed.

The invention discloses a fabricated structural system of steel plate reinforced concrete shear walls. The fabricated structural system comprises a beam member, the steel plate reinforced concrete shear walls, a floor and a sleeve connecting piece. Each steel plate reinforced concrete shear wall comprises vertical steel plates and continuous spiral stirrups. The structural system is high in assembling rate. The invention further discloses a construction method of the fabricated structural system of the steel plate reinforced concrete shear walls. The construction method comprises the steps that firstly, one prefabricated steel plate reinforced concrete shear wall is manufactured; secondly, the steel plate reinforced concrete shear wall on the lower layer is assembled; thirdly, the sleeve connecting piece is assembled on the steel plate reinforced concrete shear wall on the lower layer; fourthly, the beam member is assembled, and the floor is installed; fifthly, the floor and the beam member as well as the floor and the steel plate reinforced concrete shear wall on the lower layer are connected by pouring concrete, and concrete is poured to the junction of the beam member and the steel plate reinforced concrete shear wall on the lower layer; and sixthly, the steel plate reinforced concrete shear wall on the upper layer is hoisted, and finally concrete is poured to the junction of the steel plate reinforced concrete shear walls on the upper layer and the lower layer in situ. By adoption of the fabricated structural system of steel plate reinforced concrete shear walls and the construction method of the fabricated structural system, construction can be completed with the high assembling rate.

Disclosed is an aerodynamic driver, comprising a left end cover and a right end cover, wherein an inflation hole is arranged on the left end cover and the two ends of a rubber tube are respectively in sealed connection with the left end cover and the right end cover. The invention is characterized in that the outer side of the right end cover is fixedly connected with a rigid inner neck bush, which is nested on the outside of the rubber tube and can be clung glidingly on the outer wall of the rubble tube; the outer side of the left end cover is fixedly connected with a rigid outer neck bush, which is nested on the outside of the inner neck bush and can be clung glidingly on the outer wall of the inner neck bush.

The invention discloses a device for batching a gray fabric of a loom. The device is characterized in that the device includes a machine base (2) arranged outside the loom, a batching mechanism arranged on the machine base (2) and a transmission mechanism for connecting the loom (1) with a batching mechanism, the transmission mechanism is a multi-stage chain transmission mechanism, and the transmission mechanism is connected with an original loom batching taker (7) on the loom. The device for batching the gray fabric of the loom has the advantages of simple structure, convenient, safe and reliable operation, low equipment failure rate and low cost; a driving shaft is capable of producing a batch, thereby reducing the number of fittings during the post processing of finished products.

The invention discloses a method for producing total-eucalyptus plywood by adopting weather-resistant composite urea resin. The method comprises the following steps: rotatably cutting wood boards; drying each board; gluing; performing cold pressing for three times; stewing and conditioning; performing hot pressing for three times; cooling and conditioning; determining the thickness of a board blank and sanding the board blank. The key points of the production method disclosed by the invention are that melamine modified urea resin is adopted as a main material of an adhesive and is added with oxidized starch to form a viscous compound, polyvinyl alcohol is taken as a toughening agent, polyisocyanate is taken as a curing agent, isobutyl triethoxy silane is taken as a bridging agent, phenolated lignin is taken as a formaldehyde catcher, and moreover an antioxidant and an ultraviolet absorbent are also added to prepare the weather-resistant composite urea resin; the composite urea resin has the advantages of low formaldehyde residual volume and good weather resistance. The total-eucalyptus plywood produced by the method disclosed by the invention is excellent in weather resistance and is relatively high in environmental disruption tolerance.

The invention relates to a compressor crankshaft fitting assembling and thrust surface grinding production line. The production line is characterized by involving the following components of a machineframe, wherein a rotating disc is arranged on the machine frame through a rotating mechanism, a plurality of crankshaft positioning seats are distributed in a circumferential array on the rotating disc, and a compressor oil liquid sheet automatic assembly manipulator, a spring oil plug automatic assembly manipulator and a thrust surface grinding manipulator, corresponding to the positions of thecrankshaft positioning seats, are sequentially arranged on the machine frame. The production line has the beneficial effects that an oil liquid sheet is installed in a crankshaft by an oil liquid sheet feeding manipulator, and the installation parameters of the oil liquid sheet can be set through a system, so that installation of each oil liquid sheet is guaranteed to be standard and unified, andthe quality is guaranteed to be stable; and automatic operation in the whole process is realized, no manual intervention is needed, the production efficiency is high, and the quality is stable.

The invention discloses a hydraulic steel reinforcement cage unloading device for a steel bar framework seam welder. The hydraulic steel reinforcement cage unloading device comprises guide rails, stayarms, a rotating plate, a connecting rod, a hydraulic cylinder, a first hinge shaft, a second hinge shaft, a platform plate and supporting baffles, wherein the number of the guide rails is two, moreover, the two guide rails are arranged in parallel, the two ends of each stay arm are correspondingly connected with the inner walls of the guide rails through bolts, and the stay arms are connected with the ground through bolts; first hinge seats are arranged on the stay arms, one side of the lower end of the platform plate is provided with second hinge seats, and the other side of the lower end of the platform plate is provided with third hinge seats; the lower end of the rotating plate is hinged to the first hinge seats, and the upper end of the rotating plate is hinged to the second hinge seats; the lower end of the connecting rod is hinged to the guide rails through the first hinge shaft, and the upper end of the connecting rod is hinged to the third hinge seats; and the cylinder barrel end of the hydraulic cylinder is hinged to the first hinge shaft, the piston rod end of the hydraulic cylinder is hinged to the middle of the rotating plate through the second hinge shaft, and the supporting baffles are connected with the platform plate. Therefore, bending deformation of a welded steel reinforcement cage during unloading cannot be caused.

The invention relates to a rotation body type composite material component forming method. The forming method comprises the following steps that the surface of a forming tool is coated with a demoulding material; secondly, manual pavement and pasting of prepreg are conducted on the surface of the forming tool coated with the demoulding material, in the pavement and pasting process, pavement and pasting positioning is conducted, and a vacuum bag pressing method is used for conducting pre-compaction on the paved and pasted prepreg; thirdly, after pavement and pasting are finished, the paved andpasted prepreg is overturned, and rotation type prepreg is formed through overturning; and fourthly, an inflated cylindrical vacuum bag or air bag is used for packaging the rotation type prepreg, thencuring is conducted, and a rotation body type composite material component is obtained. According to the rotation body type composite material component forming method, fiber winding equipment is notneeded, and the production cost is reduced; and material sheet paving and pasting of a rigidity core die are not needed, and fiber wrinkling and deformation caused by the too long rigidity core die are avoided.