136results about How to "Play a transitional role" patented technology

The invention discloses a gallium-nitride-based light emitting diode epitaxial wafer and a manufacturing method thereof, belonging to the technical field of semiconductors. The gallium-nitride-based light emitting diode epitaxial wafer comprises a superlattice buffer layer, wherein the superlattice buffer layer is of a superlattice structure comprising N periods, and the superlattice structure ofeach period comprises a first sublayer, a second sublayer and a third sublayer which are laminated on a substrate. Through doping Al into the first sub-layer, the lattice mismatch between the substrate and a GaN layer can be alleviated, the defect density can be reduced, and the crystal quality of the entire epitaxial layer can be improved, thereby improving the anti-static capability of an LED. Through doping Mg into the second sublayer, a transition between the first sublayer and the second sublayer can be achieved. Through doping In into the third sublayer, the lattice constant of the thirdsublayer can be increased, thereby accelerating a stress release speed of an N-type layer, reducing the stress polarization effect of a multi-quantum well layer, and increasing the luminous efficiency of the LED.

The invention provides a hafnium silicate environment barrier coating for a ceramic-based composite material matrix and a preparation method thereof. The preparation method comprises the following steps: (1) mixing HfO2 and SiO2, carrying out wet mixing and ball milling on a ball mill, drying, grinding, sieving, sintering, and carrying out a high-temperature solid-phase reaction; (2) after the high-temperature solid-phase reaction is finished, adding deionized water for slurry preparation, then performing ball milling, and performing spray granulation to obtain an HfSiO4 powder material; (3) firstly spraying a Si layer on the surface of a ceramic-based composite matrix as a priming coat, and then spraying the HfSiO4 powder material on the surface of the priming coat as a surface layer to form a multi-layer coating; and (4) carrying out a heat treatment on the multi-layer coating to obtain the environmental barrier coating. Due to the added heat treatment, the crystallinity of the HfSiO4 surface layer is improved, the binding force of each layer of the coating is better, the stability is higher, and the water and oxygen resistance of the environment barrier coating is greatly improved. The provided preparation method is simple and easy to control, and is easy for industrial production and application.

The invention discloses a tile conveying device for an automatic mahjong machine and the automatic mahjong machine, and belongs to the field of chess and card entertainment equipment. The defects thatexisting tile conveying devices are complicated in tile conveying mode and structure, high in cost and the like are overcome. The tile conveying device for the automatic mahjong machine comprises a tile conveying bracket, a tile sucking wheel and a tile blocking piece; the tile sucking wheel is installed on the tile conveying bracket and driven by a tile conveying motor to rotate, mahjong tiles are sucked to the tile sucking wheel and rotate along with the tile sucking wheel, the tile blocking piece is located on a rotation track of the mahjong tiles and used for blocking the mahjong tiles moving to the tile blocking piece so that the mahjong tiles moving to the tile blocking piece can be separated from the tile sucking wheel and conveyed out of the tile conveying bracket. By means of thetile conveying device, the existing tile conveying mode relying on a conveying belt is changed, the conveying belt and a tile discharging wheel are omitted, a tensioning mechanism of the conveying belt is also omitted, the length of the tile conveying bracket is shortened, the structure of the tile conveying device is greatly simplified, and the space occupied by the tile conveying device is reduced.

The invention discloses vibration diaphragm and a miniature sounder with the vibration diaphragm and relates to the technical field of an electroacoustic product. The vibration diaphragm comprises a vibration diaphragm body part and a vibration diaphragm center part which are combined together through injection molding. The vibration diaphragm center part, as an insert, is combined at the center position of the vibration diaphragm body part. The edge parts of the vibration diaphragm center part are at least partially wrapped in the vibration diaphragm body part along a thickness direction. Reinforcement elements which stretch transversely and exceed the side surface of the edge part are connected with or are integrally arranged on the wrapped edge parts. The reinforcement elements stretch into the vibration diaphragm body part. According to the vibration diaphragm and the miniature sounder with the vibration diaphragm, the technical problem that in the prior art, the vibration diaphragm is liable to crack is solved. The crack defect will not occur in the vibration diaphragm and the vibration diaphragm of the miniature sounder with the vibration diaphragm, so that the reliability and stability of the miniature sounder are high, and the service life is long.

The invention relates to a metal bipolar plate and a preparation method thereof and a fuel cell, and relates to the technical field of fuel cells. The main adopted technical scheme is that the metal bipolar plate comprises a metal substrate, a Cu nano layer, a graphene layer and an amorphous carbon film. The Cu nano layer is deposited on the metal substrate, the graphene layer is prepared on the Cu nano layer and the amorphous carbon film is deposited on the graphene layer. The fuel cell includes the metal bipolar plate. The metal bipolar plate is mainly used for improving the corrosion resistance and the electrical conductivity of the metal bipolar plate and improving the bonding force between the coating and the metal substrate, thus prolonging the service life of the metal bipolar plateand the fuel cell.

The invention discloses a bionic bone joint based on curved surface 3D printing and a preparation method thereof. The multilayer bionic joint is formed by an inner layer, a middle layer and an outer layer which are in close contact in sequence, wherein the inner layer is a porous tantalum metal support, the middle layer is a solid biological ceramic support, the outer layer is a solid gelatin/ sodium alginate composite hydrogel support, the inner layer, the middle layer and the outer layer are all of an arc-shaped shell structure, the radian of the arc-shaped shell is 120-240 degrees, and a cell loading cavity formed by continuous or discontinuous edges formed by protruding outwards from the surface of the outer layer and grooves formed between the edges is formed in the surface of the outer layer. The multilayer bionic joint is large in arc surface radian and suitable for repairing large-area osteochondral joint defects, and the repairing area can be larger than 1/2 of the area of thewhole joint. Cells are inoculated into the cell loading cavity, so that the adhesion rate of the cells is increased, and the problem that the surface of the outer layer of the bionic joint is smooth,so that the inoculated cells are not prone to adhesion is solved.

The invention relates to an anti-reflective electrically-driven 3D liquid crystal lens. The anti-reflective electrically-driven 3D liquid crystal lens comprises a first substrate, a second substrate, a first alignment layer, a first electrode, a second alignment layer and a second electrode, wherein the first alignment layer and the first electrode are arranged on the inner side of the first substrate, and the second alignment layer and the second electrode are arranged on the inner side of the second substrate. A liquid crystal layer is arranged between the first substrate and the second substrate. The first electrode is a whole-face continuous electrode, and the second electrode is composed of a plurality of side-by-side linear electrodes. A first anti-reflective layer is arranged between the first electrode and the first substrate and is a transparent insulating film layer. The overall refractive rate of the first anti-reflective layer is larger than the refractive rate of the first substrate and smaller than the refractive rate of the first electrode. By arranging the first anti-reflective layer between the first electrode and the first substrate, reflection of the film layer between the first electrode and the first substrate is reduced, and therefore the reflective rate of the 3D liquid crystal lens is greatly decreased, and an image displayed under the bright environment is made to have high contrast.

The invention relates to a traditional Chinese medicinal composition for treating children's nephropathy which comprises the following raw materials: dried rehmannia root 12g,anemarrhena rhizome 9g, yellow-corktree bark 6g,root bark of tree peony 9g, astragalus root 15g,pseudostellaria root 9g, poria cocos wolf 12g, Chinese yam 12g and oldenlandia 15g.

The invention relates to polyester heat-resistant canvas and a preparation method thereof. The preparation method comprises the steps that after modified polyester industrial yarn weaving cloth is padded with RFL impregnation liquid, a rubber layer is calendered on the surface of the modified polyester industrial yarn weaving cloth, then vulcanizing is conducted, and thus the polyester heat-resistant canvas is prepared; the modified polyester industrial yarn is prepared from a modified polyester melt through solid-phase polycondensation viscosity increasing, melting, metering, extruding, cooling, oiling, stretching, thermal shaping and winding; and a preparation method of modified polyester before solid-phase polycondensation viscosity increasing comprises the steps that terephthalic acid,ethylene glycol, dihydric alcohol with a trimethylsilyl pendant group, and dihydric alcohol with a tert-butyl pendant group are mixed evenly and then subjected to esterification reaction and polycondensation reaction successively; and the peeling grade of a prepared product is five, the use temperature range is minus 50 DEG C to plus 150 DEG C, the tear strength is greater than or equal to 7.0 N/mm, and the bonding strength is greater than or equal to 7.0 N/mm. The preparation method is simple in technology and low in cost; and the prepared product is high in bonding strength and good in application prospect.

The invention belongs to the technical field of material conveying devices, and particularly relates to a motorcycle parts conveying device which comprises a rack. A drilling mechanism is slidably connected onto the rack; a conveying mechanism is further fixedly arranged on the rack; the drilling mechanism comprises a slide plate and a rotary rod; the rotary rod is rotatably connected with the slide plate; an air inlet chamber is rotatably connected onto the rotary rod; a first exhaust pipe is arranged on the air inlet chamber; a blade is arranged on the rotary rod in an air inlet pipe; a slide hole is formed in the rotary rod; a wind wheel is rotatably connected into the first exhaust pipe and is coaxially provided with a negative pressure blade; the negative pressure blade is located inthe slide hole; two sliding chutes are formed in the rotary rod; cutting blades are slidably connected into the two sliding chutes; check blocks are fixedly arranged on the cutting blades; a pressingblock is arranged in the slide hole; a drill bit is arranged on the rotary rod; an air hole is formed in the drill bit; and a dull polish ball is further arranged on the rotary rod. The motorcycle parts conveying device provided by the invention can be adopted for punching, grinding and polishing a workpiece, so that an operation process is simplified; and the motorcycle parts conveying device isusually used for punching motorcycle parts.

The invention discloses a material guiding device for stamping parts, and relates to the technical field of the stamping parts. The material guiding device for the stamping parts aims to solve the existing problem of being time-consuming and labor-intensive due to the fact that manual feeding and collection of the stamping parts are required in the stamping process. A first material guiding mechanism is arranged on one side of a press machine, and a second material guiding mechanism is arranged on the other side of the press machine. The first material guiding mechanism includes a material storage box, and a bottom box is installed at the lower end of the material storage box. A steel plate placing table is installed in the material storage box, and a plurality of steel plate bodies are placed at the upper end of the steel plate placing table. A guiding rod is installed on one side in the steel plate placing table, and a screw rod is installed on the other side in the steel plate placing table. A stepper motor is installed at the lower end of the screw rod, and the upper end of the screw rod is connected with the material storage box through a bearing. The stepper motor is locatedin the bottom box, and the bottom box is connected with the stepper motor through a screw. A fixing plate is installed above one side of the outer part of the material storage box.

The invention discloses an efficient revolving furnace gas rotational flow dewatering device and a dewatering method thereof and belongs to the technical field of steel dust removal. The efficient revolving furnace gas rotational flow dewatering device comprises an outer barrel wall, a gas guiding pillar, an overflow plate, a contracting pipe and a cyclone. The overflow plate is arranged at the bottom of the outer barrel wall. The gas guiding pillar is arranged on the upper portion of the overflow plate and located at the central axis of the outer barrel wall. The gas guiding pillar extends toan inlet of the cyclone in the height direction. The bottom end of the cyclone is connected with the contracting pipe. An inner barrel wall is arranged outside the cyclone in a sleeving manner and fixed to the outer barrel wall. The overflow plate is provided with an annular overflow gap. By means of the efficient revolving furnace gas rotational flow dewatering device and the dewatering method thereof, under the conditions that the structure of an outer barrel body is not changed and the resistance is not increased obviously, structural optimization is conducted on a rotational flow dewaterer; dewatering efficiency can be improved, thus, the gas recycling quality is improved, and the gas recycling rate is increased; the application effect of a fan is improved, and the cleaning cycle of the fan is prolonged; and the problem that the inner side of the outer barrel body is corroded can be solved.

The invention discloses an apple floating and feeding device. The device comprises a feeding water tank, a conveying belt and a fruit dividing plate, the feeding water tank comprises a draining tank and a fruit pouring tank, the draining tank is communicated with the fruit pouring tank, a first annular groove and a second annular groove are arranged in the inner wall of the fruit pouring box; theposition of the first annular groove and the position of the second annular groove are oppositely arranged; a first chain is arranged in the first annular groove, and a second chain is arranged in thesecond annular groove, the two ends of the fruit dividing plate are respectively connected with the first chain and the second chain; a first motor is arranged on the outer side of the draining box,the first motor is connected with the second chain; a conveying belt is obliquely arranged in the draining box, the lower end of the conveying belt is arranged below the first annular groove and the second annular groove; anti-rolling blocking strips are uniformly arranged on the conveying belt, a second motor is arranged on the outer side of the draining box, and the second motor is connected with the conveying belt.

The invention discloses a tool special for wire drawing installation of an electric transmission line guyed tower and a wire drawing method. The tool structurally comprises a clamping plate part, two lug plates and two fasteners. The clamping plate part is formed by buckling two clamping plates of the same structure. Each clamping plate is provided with a channel used for clamping a wire drawing hardware fitting. The portions, on the two sides of the channels, of the clamping plates are provided with grooves. The two lug plates of the same structure are installed in the grooves respectively. Bolt holes used for being fixedly connected with the clamping plates are formed in the lower portions of the lug plates. Reamed holes are formed in the upper portions of the lug plates. The two fasteners are located on the upper sides of the clamping plates. In a forest or a tower place with the complex terrain, large-tonnage autocranes cannot enter the place due to road and geological conditions, and the construction way of guyed tower erection through subsection hoisting is achieved by using the tool special for wire drawing installation, and environment damage caused by deforestation and the like is reduced.

The invention provides a conveying device of a roller hearth furnace. A furnace inner roller and a furnace outer roller are arranged at the bottom of the roller bottom furnace. The conveying device ofthe roller hearth furnace comprises a bracket, a guide rail, a supporting roller, and a driving roller, wherein the bracket is arranged outside the furnace of the roller hearth furnace. The guide rail is vertically arranged on the bracket, the supporting roller is arranged outside the furnace of the roller hearth furnace and is disposed between an inner furnace roller and an outer furnace roller,the supporting roller can move up and down on the guide rail, the supporting roller is provided with a rotating shaft, the axial direction of the rotating shaft is disposed in the horizontal direction, and the axial direction of the rotating shaft is perpendicular to the moving direction of workpieces, and the workpieces are output from the roller bottom furnace. The driving device is connected with and drives the carrier roller. The device is novel in structure and ultra-high in cost performance, and overcomes the defects of a former roller hearth furnace and has extremely high market popularization value.

The invention relates to a novel composite board. The novel composite board is characterized by comprising a metal layer and an anti-corrosion and heat-preservation layer which is arranged at the outer side of the metal layer. The composite board disclosed by the invention is good in binding force, has good strength and mechanical property, further can achieve the effects of preserving the temperature, preventing corrosion and resisting impact, and is suitable for various ships such as business ships, yachts, tourist ships, working ships, steam ships and the like.

The invention relates to the technical field of bridge erecting, and particularly relates to a bridge erecting machine beam falling deviation monitoring system. The bridge erecting machine beam falling deviation monitoring system comprises a first measuring mark, a second measuring mark, a third measuring mark, an industrial camera and a processor, wherein the processor is used for collecting testdata of the industrial camera, establishing a first space rectangular coordinate system through the first measuring mark and establishing a second space rectangular coordinate system through the second measuring mark according to the test data, converting initial three-dimensional coordinates of the third measuring mark in the second space rectangular coordinate system into final three-dimensional coordinates of the third measuring mark in the first space rectangular coordinate system, and comparing the final three-dimensional coordinates with a design value to obtain a deviation value. According to the bridge erecting machine beam falling deviation monitoring system, the second measuring mark is arranged and can play a transition role when the first measuring mark is shielded by a to-be-erected beam sheet, the three-dimensional coordinates of the third measuring mark in the first space rectangular coordinate system are obtained, meanwhile, the deviation rectifying effect is achieved,the measuring error caused by deviation of the industrial camera can be effectively eliminated, and therefore accurate beam falling is achieved.

The invention provides an incoming mechanism of a feeding unit and belongs to the technical field of machinery. The incoming mechanism comprises a frame, an incoming passage and an ejection component disposed at an outlet of the incoming passage. The incoming passage is provided over the frame and used for conveying workpieces horizontally placed. The ejection mechanism comprises a receiving plate, at least one retaining plate and a first driver; the receiving plate horizontally arranged is used for receiving the workpieces from the incoming passage, the retaining plates are fixedly connected to the receiving plate and the first driver is disposed below the receiving plate; the first driver can drive the receiving plate and the retaining plates to slide up and down along the vertical direction in the same time; when the first driver drives the retaining plates to move up, the retaining plates seal the outlet of the incoming passage and stop the workpieces from continually entering the receiving plate. The incoming mechanism has the advantages of reasonableness in layout and high automation level.

The invention relates to the field of washing powder equipment, in particular to a steam-pipe rotatory dryer. The steam-pipe rotatory dryer comprises an end plate which is connected with a middle circle heat exchange pipe. The lower side face of the middle circle heat exchange pipe is connected with a connecting pipe which is connected with a ring pipe. The ring pipe is connected with an arc-shaped pipe which is connected with an inner circle heat exchange pipe. The inner circle heat exchange pipe is connected with the arc-shaped pipe, and the ring pipe plays a transition role, so that cracks caused by gas expansion are prevented; furthermore, the inner circle heat exchange pipe is gathered through the connecting pipe to be connected to the middle circle heat exchange pipe, and therefore fatigue damage to the connecting part of a non-condensable gas exhaust part and the middle circle heat exchange pipe is avoided, and in the operation process of the dryer, stress of a welding line part connected with the middle circle heat exchange pipe is reduced.