54results about How to "Change structural properties" patented technology

The invention discloses a double-flexible-cantilever-beam vibration measurement and control device and method based on laser binocular vision. The device comprises two flexible cantilever beams connected in series. The flexible cantilever beams are provided with piezoelectric ceramic drivers, piezoelectric ceramic sensors and accelerometers. The device also comprises a line laser, an industrial camera, a servo motor and a planetary speed reducer. The line laser generates a laser light resource, and combined with the industrial camera, in a complete non-contact mode, the bending vibration of the cantilever beams is detected. The speed of the servo motor is reduced by the planetary speed reducer, and the servo motor is used for controlling the rotation of the cantilever beams, receiving a vibration suppression signal obtained by a vibration control algorithm and suppressing the vibration of the cantilever beams at the same time. The device can be used for the vibration measurement and control of a space flexible joint, laser is used as the light resource without the affection of sun light, thus the working stability is maintained, and a reference is provided for the vibration measurement and vibration suppression of a flexible aerospace structure.

The invention discloses a ceramic composite material for a high-flexibility artificial skeleton joint and a preparation method. Raw materials are formed by the following components by mass percentage:30-40% of hydroxyapatite, 30-40% of zirconia-toughened aluminum oxide powder or yttria-stabilized zirconia powder, 5-10% of ceramic whisker, 5-10% of nano titanium oxide, 0-10% of oyster shell powder, 0-10% of magnesium oxide, and 0-10% of calcium oxide; the zirconia-toughened aluminum oxide powder is prepared from 60-70wt% of aluminum oxide and 30-40wt% of zirconium oxide, and is prepared by preparing mixed gel through a coprecipitation method, and spray-drying; the yttria-stabilized zirconia powder is prepared from 97wt% of the zirconium oxide and 3wt% of yttrium oxide. The prepared artificial skeleton joint ceramic composite material has good biocompatibility and flexibility, good shock resistance, and good heat stability and corrosion resistance, wherein the bending strength can reach1250-1400 MPa, the breaking tenacity can reach 16.5-17.5 MPa/m<2>, and the compressive strength reaches 750-900 HV; the material can prepare an artificial skeleton or a joint instead of a metal or ceramic.

The invention relates to a method for manufacturing plasticized surfacing linings of bamboo and wood veneers and the application thereof. The method comprises the following steps: (1) moistening with alkali at the low temperature; (2) treating with phenmethyl; and (3) hot-pressing and shaping treatment: plasticized surfacing linings of bamboo and wood veneers are applied to the surface linings of structural veneers of various artificial slabs, such as container bottom plates, carriage bottom plates, cement templates and the like, so as to improve the surface wear resistance and static bending strength, and reduce the cost of surface materials. The invention has the advantages that the crystal structure of wooden fabric is locally or completely damaged through the moistening of the alkali at the low temperature, so as to fully expose the hydroxide radical of the crystallization region, enable a phenmethyl agent to be bonded with the hydroxide radical to the maximum extent, and introduce new radical, thereby changing the original microstructure and chemical properties of the wooden fabric; and in the hot-pressing and shaping period, the novel material which can preserve the advantages of wooden material is formed and is provided with the certain characteristics of plastics, such as hot melt processability, stable dimension with moist heat, high wear resistance, and the like.

The present invention discloses a multi-flexible plate vibration detection device and method. The device comprises 2N+1 flexible plates, a linear travel mechanism, a vibration detection mechanism anda control module, one of the flexible plates is located at the central position, the other flexible plates are symmetrically arranged at two sides of the one of the flexible plates, the flexible plates are perpendicular to a horizontal plane and hinged together through a hinge to form a flexible hinge plate, and the flexible hinge plate is arranged on the linear travel mechanism; the vibration detection mechanism comprises two slide projectors, two sets of binocular vision systems and 2N acceleration sensors, each slide projector is configured to project mark points on the flexible hinge plate, each set of the binocular vision systems is configured to detect the mark point area of the corresponding slide projector on the flexible hinge plate, and each acceleration sensor is arranged on thecorresponding flexible plate. The multi-flexible plate vibration detection device and method can reflect the global features of the flexible hinge plate and provide a condition for the active vibration control based on the multiple sensors.

The invention discloses a multi-flexible-hinged-plate rotating vibration detection device and method, and the device comprises two flexible hinged plates, a rotating mechanism, a vibration detection mechanism and a control assembly. The two flexible hinged plates are symmetrically disposed on the rotating mechanism, and each flexible hinged plate comprises 2N+1 flexible plates which are hinged together, wherein each flexible plate is provided with a plurality of mark points through pasting. The vibration detection mechanism comprises two groups of binocular vision systems and two groups of acceleration sensors, wherein the two groups of binocular vision systems, the two groups of acceleration sensors and the two flexible hinged plates are corresponding in a one-to-one manner. Each binocular vision system is used for detecting a mark point region on the corresponding flexible hinged plate, and each acceleration sensor is disposed on the corresponding flexible hinged plate. The control assembly is connected with the rotating mechanism, the binocular vision systems and the acceleration sensors. The device effectively eliminates the impact on a vibration control effect from other uncontrollable factors, and provides conditions for the research of the control of the active vibration based on multiple sensors.

The invention discloses a pneumatic hydraulic corrugated pipe annular combination type wear-resisting ball valve, and belongs to inventions and creations in the aspect of special ball valves. The novel valve is developed to solve the prominent problems that a lock hopper valve and a lock slag valve used in an existing coal chemical industry device and a silicon powder valve of a polycrystalline silicon device are unstable in operation, short in service life and the like. According to the pneumatic hydraulic corrugated pipe annular combination type wear-resisting ball valve, each of an inner cavity of a left valve body and an inner cavity of a right valve body is provided with an annular multi-corrugated-pipe combined hydraulic pusher and a hydraulic sealing valve seat, each valve seat is designed to be a movable contact spherical surface and controls sealing through hydraulic pressure, in the rotation process of a ball body, friction is not generated between valve seat sealing rings and the spherical surfaces, only when the valve is closed, the sealing rings and the spherical surfaces are closed to form reliable sealing, and therefore, the service life of the valve is reliably guaranteed, and the valve opening and closing torque is small, so that operation is time-saving and labor-saving.

A fiber processing device comprises a cavity body, a screw mechanism, a crimp mechanism, a material blocking plate and a power source. The cavity body is provided with a feed port for fiber entering and a discharge calve for discharging the fiber, and a preset pressure value is set on the discharge valve. When the pressure inside the cavity body is larger than the preset pressure value, the discharge valve is opened to discharge the fiber. The screw mechanism is used for pushing the fiber entered from the feed port into a chamber. The crimp mechanism is used for kneading and squeezing the fiber pushed by the screw mechanism to produce crimps. The material blocking plate is used for blocking curved fiber so as to enable the pressure in the chamber to rise. The power source is used for providing motive power needed by the screw mechanism and the crimp mechanism. After the fiber is preprocessed by the fiber processing device, the structural properties of natural fiber can be effectively changed, and bulk and water absorption capability of paper products made of the fiber are greatly improved.

The invention relates to a method for producing benzyl bamboo engineering materials, which is characterized by comprising the following process steps: 1. preparing raw materials; 2. swelling raw materials at low temperature by alkaline solution; 3. performing benzylation treatment; and 4. performing hot press shaping treatment. The method has the following advantages that the crystal structure of bamboo fiber is damaged partially or completely through swelling at low temperature by the alkaline solution, then hydroxyl in a crystal zone is exposed completely to enable a benzylation agent to combine with the hydroxyl to a maximum extent to introduce a new group, so the prior microstructure and chemical features of the bamboo fiber are changed and bamboo has the hot melt processing property. Under the condition of not adding any adhesive, bamboo materials recombine to form a new material which keeps the advantages of the bamboo materials and has certain characteristics of plastic during hot press shaping, such as hot melt production, hygrothermal dimensional stability, high wear resistance and insect and corrosion preventing performance.

The invention discloses a fiber pretreatment device, which comprises a cavity, a screw mechanism, a curling mechanism, a stop plate, a transmission shaft and a power source. The cavity is provided with a feeding hole and a discharge valve; a preset pressure value is set for the discharge valve; when the pressure in the cavity is greater than the preset pressure value, the discharge valve is opened so as to discharge fibers. The screw mechanism is sheathed onto the transmission shaft and is used for pushing the fibers entering from the feeding hole into the cavity. The curling mechanism is provided with a plurality of first cutters, and the first cutters are fixedly sheathed onto the transmission shaft in the manner of not being vertical to the transmission shaft so as to knead, extrude and curl the fibers pushed by the screw mechanism, and meanwhile, the fibers are pushed for the second time. The stop plate is used for stopping the curled fibers, so that the pressure in the cavity rises. The power source is used for providing power required by the screw mechanism and the curling mechanism. After the fibers are pretreated by the fiber pretreatment device disclosed by the invention, the structural characteristics of the natural fibers can be effectively changed, so that paper products made of the fibers are greatly improved in bulk and water absorbency.

The invention relates to the technical field of brake pad machining, in particular to an automobile brake pad steel back grinding device. The automobile brake pad steel back grinding device comprisesa box body, a box door is clamped on the box body through two sets of clamping mechanisms, two sets of sliding mechanisms are arranged in the parts, on the two sides of the lower end of a water inlet,of the box body, a shaft seat is fixedly arranged at the middle end of one side inside the box body, a through hole penetrating through the box body is formed in the middle end of the other side inside the box body, a turnover mechanism is arranged between the through hole and the shaft seat, the turnover mechanism is connected with a U-shaped box through a connecting rod, a brake pad main body is arranged in the U-shaped box, the brake pad main body is limited through a plurality of pre-tightening bolts in position, a square groove is formed in the bottom of the box body, a disc is fixedly welded at the tail end of a transmission shaft of a transmission motor above a motor box, a steel brush is arranged at the upper end of the disc, and the upper end of the steel brush is in contact withthe lower surface of the brake pad main body. The grinding device is stable in structure, convenient to assemble and disassemble and good in polishing effect on a brake pad.

The invention relates to a straw organic liquid and particularly relates to a preparation method of the straw organic liquid specially used for crops. The preparation method includes the steps of: 1) pre-treating crop straws and separating the crop straws to obtain hemi-cellulose liquid, cellulose and lignin, wherein a less amount of waste liquid and membrane treatment supernatant are generated during the separation; 2) mixing the hemi-cellulose liquid with the waste liquid, filtering, flocculating and precipitating the mixed liquid, adding nitrogen and phosphorus and performing membrane treatment to obtain a fourth liquid phase, and performing anaerobic fermentation and vacuum pressure reduced concentration, and adding a strong activator and a plant nutritional growth promoter to produce the straw organic liquid specially used for crops. The straw organic liquid specially used for crops has comprehensive and balanced nutrients, is quick in effect and can increase germination ratio of crop seeds and seedling quality, is short in production period and is low in production cost and high in yield, can solve the problems of long production period, high production cost and low yield of a liquid fertilizer in the prior art.

The invention provides novel rubber powder composite modified asphalt and a preparation method thereof. The novel rubber powder composite modified asphalt is prepared from the following components bymass percentage: 12%-18% of waste tire rubber powder, 2%-5% of nano-material modifier and 80%-86% of matrix asphalt; by compounding the nano material with the rubber powder modified asphalt, the structural characteristics of the raw materials can be changed on the nanoscale, so that the macroscopic properties of the material are greatly optimized, the high-temperature rutting resistance of the rubber powder modified asphalt can be improved, and the storage stability of the rubber powder modified asphalt is improved.

The invention discloses a method for improving the pretreatment effect of acid catalysis ionic liquid with an organic solvent-aqueous solution. The method comprises the following steps: (1) smashing a fiber raw material; (2) adding the raw material into an ionic liquid-acid system for pretreatment and catalysis; (3) regenerating with an organic solvent-aqueous solution in an amount which is 2 to 5 times the volume of the raw material; (4) continually stirring; (5) centrifuging to obtain a coarse regenerated fiber raw material; (6) washing the coarse regenerated fiber raw material with a corresponding organic solvent-aqueous solution by 4 to 6 times, and drying to obtain a regenerated fiber raw material. By adopting the method disclosed by the invention, the structural characteristic of the fiber raw material is changed. The dense cell wall structure of fibers is broken, the prepared regenerated fiber raw material is porous on the surface, is less in sediment, and is lower in lignin content, and the problem of adhesion of a large amount of lignin sediment to the surface of a conventional regenerated fiber raw material and the problem of inhibition of enzymatic saccharification are solved.

The invention relates to the field of food, gel jelly and high-fiber crisp biscuits are combined and fused into a biscuit baking process, and gel core type crisp leisure biscuits which are good in palatability, nutritional and safe are researched. Step-by-step baking is combined with a gel core injection process, and natural plant extracts such as bamboo leaves are added, so that generation of harmful substances in the high-temperature baking process of the biscuits is reduced; esterified starch is used for replacing low-gluten flour, so that the digestion and energy supply characteristics and structural characteristics of the biscuits are changed; the erythritol and the momordica grosvenori sugar are used for replacing traditional cane sugar, so that the consumption requirements of people who lose weight are met; on the basis of crisp biscuits, bamboo leaf flavonoid elements are added to improve the nutritional structure, and more diversified and more novel edible functions are embodied; jelly and biscuits are combined, so that the defects that the biscuits are difficult to swallow in the eating process, dry in taste and the like are effectively overcome. The technological method is simple, economical and convenient, and the produced gel jelly core-injected crisp biscuits are good in palatability, attractive in appearance, good in efficacy, low in fat and sugar and unique in flavor.

The invention discloses antibacterial domestic ceramics, and relates to the technical field of ceramics. The antibacterial domestic ceramics contains zirconium phosphate/ sodium alginate modified attapulgite compound silver-carrying antibacterial agent of which the mass is 6-8%. The prepared antibacterial domestic ceramics not only has excellent thermal shock resistance and impact resistance strength, but also has a significant antibacterial effect and long germicidal duration time.

The invention discloses biological fermentation feed for lactating sows, and a preparation method of the biological fermentation feed, and aims to solve the technical problems of low feed intake of the lactating sows and low weaning litter weight of piglets in the prior art. The fermentation feed is mainly prepared by mixed fermentation of a fermentation substrate, a compound enzyme, a culture medium, a strain solution, molasses and the like. By reasonable setting of a raw material fermentation technology, the physical structure and the chemical characteristics of each main raw material are changed, so that the nutritional value of the feed raw materials is improved, the utilization rate of the feed by lactating sows can be improved, and the parturition performance of the sows is comprehensively improved. The raw materials are in synergetic cooperation, so that the feed intake of the lactating sows can be remarkably increased, and the weaning litter weight of the piglets is increased.

The invention discloses a production method of degreased peanut protein meat, which comprises the following steps of: by taking degreased peanut protein powder as a raw material, producing the degreased peanut protein meat through processes such as mixing, blending, feeding, extruded systematism, shaping, drying and the like; adding a proper amount of salt and water in the degreased peanut protein powder in the producing and processing process; and producing the degreased peanut protein meat by adopting gradient heating and single-screw extrusion. The peanut protein textured product produced by using the method has the advantages of bright color and luster, better elasticity, rehydration characteristics, high texture degree, good sensuous quality and long quality guarantee period; and according to the production method, the process operation is simple, used equipment has lower cost and the small-sized industrial production is easily realized.

The invention relates to a composite retarder braking orbit for eliminating the high frequency noise generated by the friction of a retarder braking orbit; wherein, the composite retarder braking orbit comprises a noise reduction board and a base rail, the noise reduction board is right angle type containing a right-angled clamped edge and a brake edge, through-holes are arranged on the clamped edge and the base rail, and a bolt penetrates the through-holes so that the noise reduction board can be fixed on the base rail and the brake edge is closely attached to the base rail.

The invention relates to a novel composite retarder braking orbit for eliminating the high frequency noise generated by the friction of wheel sets for humping cars and a retarder braking orbit, and reducing environmental pollution of noise; wherein, the invention comprises a noise reduction board and a base rail, the noise reduction board is right angle type containing a right-angled clamped edge and a brake edge, through-holes are arranged on the clamped edge and the base rail, and a bolt penetrates the through-holes so that the noise reduction board can be fixed on the base rail and the brake edge is closely attached to the base rail. Besides, novel composite material is adopted in the noise reduction board to greatly reduce the noise.