40results about How to "Solve the size problem" patented technology

The invention provides a flexible hand function rehabilitation device based on rope driving. The flexible hand function rehabilitation device based on rope driving comprises four-finger exoskeleton mechanisms, a thumb exoskeleton mechanism and a soft rubber glove. An index finger exoskeleton mechanism comprises an index finger distal knuckle sleeve ring, an index finger middle knuckle sleeve ringand an index finger proximal knuckle sleeve ring; and each sleeve ring is connected together by a hinge structure. The thumb exoskeleton mechanism comprises a thumb proximal knuckle sleeve ring and athumb distal knuckle sleeve ring which are connected together by a hinge structure. A rope is fixed onto the hand function rehabilitation device through an aluminum sleeve, so that the effect that therope cannot slide down when the rope at the palm side and the hand back side pulls the fingers to bend / extend and outwards extend / inwards collect is ensured. The flexible hand function rehabilitationdevice based on rope driving solves the dimension problem of a traditional rigid exoskeleton. The wearing effect of a user is more compact; the comfortable degree is higher; the adaptation to the hand of the user is more easily to be realized; and a rope passage is arranged on the rehabilitation device, so that when the rope is driven to move by a driver, the hand of a patient is driven to move in a maximum functional region.

The invention discloses an easy-to-adjust mouth and lip opening device for stomatology, which comprises a mounting plate, wherein a surface of the mounting plate is fixedly provided with an observation port, an inner wall of the observation port and the surface of the mounting plate are both circular, the surface of the mounting plate is fixedly connected with supporting columns, four supporting columns are symmetrically distributed by taking an axis of the mounting plate as a center, one end of each supporting column is fixedly connected with a functional block, the surface of each functionalblock is fixedly provided with a rotating groove, the inner wall of each rotating groove is fixedly provided with an adjusting groove, and four adjusting grooves are distributed in an annular array by taking the axis of the rotating groove as the center of the array. By the adoption of the easy-to-adjust mouth and lip opening device for the stomatology, one end of a liquid storage pipe is in threaded connection with a connector, and the one end of the connector is fixedly communicated with a hose; when the device is used, the connector is in threaded connection with the liquid storage pipe, so that disassembly, cleaning and disinfection of the device are convenient in a later period, and a replacement of mouthwash in the liquid storage pipe, the hose and the functional pipe is facilitated.

The invention relates to the field of manufacturing vanadium cells, in particular to a method for manufacturing a high-conductivity conductive plastic bipolar plate for the vanadium cell. The method comprises the steps of: uniformly mixing a conductive plastic raw material in a high-speed mixing machine, mixing through a double-screw extruder to manufacture master batches, adding the manufactured master batches to a single-screw extruder, and carrying out extrusion molding through the single-screw extruder to manufacture a conductive high-molecular-material collector plate. According to a bipolar plate meeting technique requirements, temperature-resistant resin and a conductive filler are selected, pelletized by the double-screw extruder, and extruded by the single-screw extruder to manufacture a high-strength, anti-corrosion and high-temperature-resistant plastic bipolar plate; and the resistivity of the manufactured high-strength, anti-corrosion and high-temperature-resistant plastic bipolar plate can reach 0.1-0.5 omega per centimeter so as to meet an application index of the vanadium cell. The bipolar plate manufactured by the method disclosed by the invention can be rather thin, has the advantages of large area, good continuity and low cost, and also has the advantages of being capable of reducing the cost of the vanadium cell, ensuring stable operation in cells without releasing chemical groups, and maintaining stability and reliability of an electric pile of the vanadium cell.

The invention discloses a large-caliber reflection-type light guide machine and a working method thereof, belonging to the technical field of solar energy application. The large-caliber reflection-type light guide machine consists of an azimuth angle drive device, a height angle drive device, a focus lens group, a sun location system, a focusing device and an optical fiber beam. The focusing device is used for adjusting a receiving end surface of the optical fiber beam to a focal point of the focus lens group, and the focus lens group is driven by the azimuth angle drive device and the height angle drive device, so that the focus lens group can follow the sun, the infrared ray in the incidence light is eliminated by utilizing a filter lens of the focus lens group, and the uniformity of the intensity of the focus spot can be realized by virtue of a light homogenizing cavity of the focus lens group; the sun location system adopts a photosensitive element to provide a sun roughly location signal and utilizes a high temperature sensor to provide a precise position signal of the focus spot. By adopting the large-caliber reflection-type light guide machine, the infrared ray in the sun focus light is eliminated, the uniformity of the intensity of the focal spot can be realized, the service life of the optical fiber beam can be greatly prolonged, and the position detection reliability of the focus spot can be improved by utilizing the high temperature sensor.

The invention relates to a preparation method of a material and / or color gradient mobile phone shell. The preparation method comprises the following steps: S1, preparation of various feeds for 3D printing according to a 3D printing model; S2, mobile phone shell blank printing: dividing the mobile phone shell blank into a plurality of printing areas according to the distribution of materials in the3D printing model, and carrying out continuous printing on the plurality of printing areas to obtain a mobile phone shell blank; S3, degreasing: degreasing the green body to obtain a degreased part;and S4, sintering: sintering the degreased part to form a final product. According to the invention, multiple material printing technologies and indirect printing are combined to realize integrated molding of the mobile phone shell, and the size problem caused by assembly is avoided.

The invention discloses a partial discharge detection system for transformer slot leak electromagnetic waves and method. The system is composed of a signal source generation device arranged inside thetransformer for generating electromagnetic waves, an electromagnetic wave receiving device arranged in the slot of the transformer for receiving the electromagnetic waves, and a data acquisition device connected with the electromagnetic wave receiving device for acquiring electromagnetic wave signals received by the electromagnetic wave receiving device. In the method, a PD pulse source is adjusted through a control device to output PD pulse signals, electromagnetic wave signals in or inside the power transformer slot are acquired through an antenna sensor and an oscilloscope, and thus, detection on the transformer slot leak electromagnetic waves is completed. The power transformer slot leak PD electromagnetic wave signals can be effectively detected, and a strong support is provided forresearch on an electromagnetic wave distribution law in (inside) the transformer slot.

The invention discloses a driving unit modularization stick-slip driving positioning platform which comprises a movement output micro-positioning platform, a platform base and a driving unit module arranged inside the platform base. The driving unit module comprises a module frame, a driving source and a guiding driving element, wherein the driving source is arranged inside the module frame, and the guiding driving element is connected with the driving source and is a flexible hinge. The guiding driving element is perpendicular to the movement output micro-positioning platform. The top of the guiding driving element makes direct contact with the movement output micro-positioning platform. The stick-slip effect is generated between the guiding driving element and the movement output micro-positioning platform, displacement is directly output, the precision is high, and the response speed is high; due to the modularized design, the platform base and the friction adjusting mechanism are greatly simplified, and the machining and manufacturing requirement of the whole positioning platform is lowered.

The invention provides a preparation method of polycrystalline zinc selenide. The preparation method comprises the following steps that the surface of a polycrystalline zinc selenide sheet with the thickness of 30-50mm is treated to obtain a zinc selenide polished wafer with the roughness being less than Ra20, the zinc selenide polished wafer is cleaned with plasma, and the cleaned zinc selenide polished wafer is put on a graphite substrate; step 2, the zinc material is installed in a crucible; step 3, a graphite substrate depositor is mounted on a graphite crucible and then put in a chemical vapor deposition vacuum furnace; step 4, argon is introduced into the chemical vapor deposition vacuum furnace at room temperature; step 5, the crucible is heated, and the graphite substrate depositor is heated; step 6, the zinc starts to evaporate, hydrogen selenide gas carried by the argon is introduced into the graphite substrate depositor, and argon is introduced into the crucible; and step 7, after zinc evaporation is finished, introducing of the hydrogen selenide gas is stopped, the crucible is cooled, the graphite substrate depositor is cooled, and the final polycrystalline zinc selenide with the overall thickness of 60-100mm is obtained after being discharged from the furnace. According to the invention, the thick polycrystalline zinc selenide material can be prepared.

The invention discloses a continuous Teflon press for a thermoplastic composite material. The press includes a frame, a group of a driving roller and a tensioning roller which are arranged up and downand a Teflon conveying belt coating the driving roller and the tensioning roller are respectively arranged on the frame, a transmission device for driving the Teflon conveying belt to rotate is arranged between the driving roller and the tensioning roller, the transmission device is connected with the Teflon conveying belt through an elastic part, a heating area for heating a thermoplastic composite material and a cooling area for cooling the thermoplastic composite material are respectively arranged in the frame, and a thickness determining device for determining the thickness value of the thermoplastic composite material is arranged between the heating area and the cooling area.

The invention discloses a packaging structure of a high-power radio frequency device, which comprises a plurality of radio frequency power chips connected in parallel and a packaging flange. The plurality of radio frequency power chips are obliquely arranged in a packaging inner cavity of the packaging flange, so that the number of input leads of the radio frequency power chips is reduced, and the input leads and output leads are not overlapped in space. The plurality of chips are obliquely arranged on the packaging flange, so that the utilization rate of the packaging space is remarkably improved, and the purpose of higher power output is achieved. By slightly reducing the number of the input leads of the intermediate radio-frequency power chip, the output leads cannot be reduced, the reliability of a high-power application process can be ensured, large-area overlapping of the input leads and the output leads in space is avoided, mutual inductance is reduced, and oscillation of the radio-frequency power device is effectively avoided.

The invention discloses a preparation method of a foamed aluminum sandwich panel based on friction stir welding connection. The preparation method comprises the following steps that (1) two foamed aluminum sandwich panel preforms are prepared; (2) surface treatment is carried out; (3) the end faces, perpendicular to the horizontal plane, of the two surface-treated preforms are in butt joint; (4) friction stir welding is carried out, the rotating speed of a stirring needle is 400-1200 rpm, and the welding speed is 100-200 mm / min; and (5) the welded preforms are put in a heating furnace to be foamed. The method can be used for preparing the foamed aluminum sandwich panel welding preforms with high panel bonding strength and can be used for preparing the foamed aluminum sandwich panel large in size, high in overall expansion rate, good in panel flatness and good in sandwich foam hole continuity; and the method is simple in process route and can be used for large-scale production.

The invention discloses a spraying-free POM composite material with low warpage and high dimensional stability and a preparation method of the spraying-free POM composite material. The spraying-free POM composite material with low warpage and high dimensional stability specifically comprises the following raw materials in parts by weight: 40-80 parts of POM resin, 1-5 parts of a dispersing agent,2-5 parts of an anti-aging auxiliary agent and 8-25 parts of functionalized masterbatches. The functionalized masterbatches comprise the following components in percentages by weight: 3-15 parts of anelastic ionomer, 2-10 parts of graphene oxide and 3-8 parts of metal toner. Through high-efficiency masterbatch predispersion of the elastic ionomer with high impact resistance modification effect, agraphene oxide sheet layer and the metal toner, the obtained POM composite material has a good surface spraying-free effect, on that basis, the problem of dimensional stability of POM with large forming shrinkage and easiness in warpage is obviously solved, the warpage of prepared sample plates with different wall thicknesses is reduced to be about 1 / 4-1 / 5 of that of a conventional material in ahigh-temperature and long-period testing environment, and moreover, by the high-efficiency composite masterbatch modification mode, the negative influence of the addition of the an elastomer toughening agent on the rigidity and heat resistance of the material can be effectively compensated.

The invention provides a flight control simulator tensile and compressive load testing system field calibration device which comprises a structural framework, a loading mechanism, a standard measurement unit, an upper computer and a fine adjustment mechanism. The loading mechanism, the standard measurement unit and a calibrated force sensor are sequentially connected and then installed on the structural framework. The fine adjustment mechanism supports the loading mechanism, and through fine adjustment of the position of the loading mechanism, the loading mechanism, the standard measurement unit and the calibrated force sensor are located on the same straight line. The standard measurement unit and the upper computer are wirelessly connected. The calibrated force sensor and a flight control simulator are connected.

The invention provides a grooved rail grinding device and method utilizing a curved surface grinding machine, relates to the technical field of rail grinding maintenance, and solves technical problemsthat existing grinding equipment cannot effectively grind a grooved rail, and maintenance and repair purposes are difficult to achieve. The grinding device comprises a curved surface grinding machine, and the curved surface grinding machine makes contact with a profile surface of the grooved rail through a circumferential surface of a grinding wheel and can carry out forward and reverse bidirectional grinding. The curved surface grinding machine comprises a first grinding unit, a second grinding unit, a third grinding unit and a fourth grinding unit. The first grinding unit, the second grinding unit, the third grinding unit and the fourth grinding unit are connected in sequence and can grind different positions of the profile surface of the grooved rail, and complete envelope grinding canbe performed on the profile surface of the grooved rail after combination. Grinding quality and efficiency are ensured through combination of the multiple grinding units, the maintenance and repair purposes are achieved, and a problem that a large grinding machine cannot carry out grinding due to a size reason is solved.

The invention discloses a large-caliber reflection-type light guide machine and a working method thereof, belonging to the technical field of solar energy application. The large-caliber reflection-type light guide machine consists of an azimuth angle drive device, a height angle drive device, a focus lens group, a sun location system, a focusing device and an optical fiber beam. The focusing device is used for adjusting a receiving end surface of the optical fiber beam to a focal point of the focus lens group, and the focus lens group is driven by the azimuth angle drive device and the height angle drive device, so that the focus lens group can follow the sun, the infrared ray in the incidence light is eliminated by utilizing a filter lens of the focus lens group, and the uniformity of the intensity of the focus spot can be realized by virtue of a light homogenizing cavity of the focus lens group; the sun location system adopts a photosensitive element to provide a sun roughly location signal and utilizes a high temperature sensor to provide a precise position signal of the focus spot. By adopting the large-caliber reflection-type light guide machine, the infrared ray in the sun focus light is eliminated, the uniformity of the intensity of the focal spot can be realized, the service life of the optical fiber beam can be greatly prolonged, and the position detection reliability of the focus spot can be improved by utilizing the high temperature sensor.

A vertical stack package chip comprises: a first substrate, a second substrate, ..., and an nth substrate, wherein n>1; and a plurality of connectors interconnecting the adjacent substrates, the connectors being connection pins or flexible boards, the hollow space between the adjacent substrates being adjusted by controlling the depth of the connectors placed in the substrates, or the height of the connectors. The vertical stack package chip solves the technical problem of space limitation of the original chip structure, fully utilizes the three-dimensional space of the substrate, achieves interconnection communication among multiple layers of substrates and improves the flexibility of the chip structure.

The invention relates to a method for producing a single-crystal film of AlN material, comprising the transfer of a single-crystal seed layer of SiC-6H onto a support substrate of silicon material, followed by the epitaxial growth of the single-crystal film of AlN material.

The invention relates to scissors, in particular to further improvement of scissors. The scissors comprise scissor blades, a rivet and scissor handles. The scissor blades and the scissor handles are connected through the rivet, and scale marks are arranged on the scissor blades. The scissors are convenient and simple to use and convenient to carry, and is mainly used for clipping occasions where specific dimensions are needed.

The invention relates to a method for manufacturing a monocrystalline layer of GaAs material comprising the transfer of a monocrystalline seed of SrTiO3 material onto a support substrate of silicon material followed by epitaxial growth of a monocrystalline layer of GaAs material.

The invention discloses a soft claw mandrel adjuster. The soft claw mandrel adjuster comprises a supporting adjuster, a locking screw (1), a supporting rod (2) and a barrel body (3), one end of the barrel body (3) is closed, the other end of the barrel body (3) is provided with a cylindrical cavity (4), the closed end of the barrel body (3) is provided with a through hole (5) communicating with the cylindrical cavity (4), the cylindrical surface of the barrel body (3) is uniformly provided with three guide holes (6) communicating with the cylindrical cavity (4) in the circumferential directionof the cylindrical surface, the cylindrical surface of the barrel body (3) is further provided with a threaded hole (7) communicating with the cylindrical cavity (4), the supporting adjuster comprises a rotating shaft (8), an impeller (9) and a guide wheel (10), and the impeller (9) is composed of three blades which are in an equilateral triangle and fixedly arranged on one end face of the guidewheel (10). The soft claw mandrel adjuster has the beneficial effects that the structure is compact, the use is convenient, the size can be adjusted, the production preparation time can be shortened,and customized management can be facilitated.

The invention relates to a cutting and separation head for manual ceramic cutters, comprising: a body (3) that carries a grip handle (5) and a cutting tool (6), is mounted on movable supports (2) on longitudinal guides of the cutter (C), and is able to rotate with respect to a first transverse rotary shaft (4); a separator provided with a foot (7), a class 1 lever (8), and a first coupling element (10) in the separator that is couplable to a second coupling element (12) in the body (3) of the head (1); and a cam (13) for releasing the first and second coupling elements (10, 12), the cam being mounted on the body (3) and relatively rotatable between a first position and a second position.

The invention relates to a method for simultaneously using a cold wax block and a ceramic core for wax mold pressing. According to the method for simultaneously using the cold wax block and the ceramic core for the wax mold pressing, the cold wax block is divided into an upper mold cold wax block body and a lower mold cold wax block body so that the complex structure of the whole mold design of the cold wax block can be avoided, the manufacturing cost can be reduced, and the size and the shape of the cold wax block can be controlled conveniently; the upper mold cold wax block body and the lower mold cold wax block body play a role in protecting the ceramic core so that problems that the ceramic core is deviated and broken due to direct strong impact of liquid wax in the wax pressing process can be avoided, and meanwhile, the upper mold cold wax block body and the lower die cold wax block body are used so as to protect the ceramic core against breakage caused by the cooling shrinkage of the liquid wax; the ceramic core is placed between the upper mold cold wax block body and the lower mold cold wax block body so that the ceramic core can be placed and positioned in a wax mold conveniently; and meanwhile, an inner cavity of a required part can be obtained, and the size problem of the thicker and larger part of the wax mold caused by large shrinkage quantity of the liquid wax can be solved.

The invention discloses a manner for beveling a silicon block of the small size. The manner comprises the following steps: firstly, the silicon block required to be beveled is selected, and the side length of the small side of the silicon block is measured and recorded; secondly, according to the side length of the small side of the silicon block, the bonding opposite position of a crystal holder and a glass plate is calculated; thirdly, according to data obtained by calculation, a crystal holder border line is drawn on the glass plate, and according to the crystal holder border line, the crystal holder is bonded on the glass plate; fourthly, the silicon block is bonded on the glass plate; and fifthly, the silicon block is fixed, and then can be cut, wherein the cutting line is parallel to the short side of the crystal holder. According to the manner, through beveling, the size problem of the small silicon block can be effectively solved; the rejection rate of the silicon block of the small size can be reduced to the greatest extent, and the cyclic utilization rate of the silicon block is improved; and the production cost is reduced.