34results about How to "Small expansion deformation" patented technology

The invention discloses a halogen-free environmentally-friendly power cable material for wind power generation, and its preparation method. The cable material comprises the following raw materials, by weight, 90-110 parts of a polyolefin elastomer (POE) 8450/American DuPont, 50-60 parts of PVC resin powder, 40-60 parts of wollastonite powder, 60-80 parts of nanometer attapulgite, 50-80 parts of ethylene-propylene-diene terpolymer rubber, 40-50 parts of nitrile butadiene rubber, 20-30 parts of nanometer pottery clay, 30-40 parts of aluminum hydroxide, 1-4 parts of precipitated white carbon black, 60-80 parts of light calcium carbonate, 3-5 parts of insoluble sulfur, 1-4 parts of triallyl isocyanurate, 3-5 parts of an antiager TPPD, 4-6 parts of dicumyl peroxide (DCP), 3-8 parts of dibasic lead phosphite, 5-7 parts of an antioxidant 1010, 2-5 parts of monoglycerin stearate and 50-70 parts of antimony trioxide. The cable material has the advantages of simple preparation method, excellent electrical property, good heat, ageing and wear resistances, small swelling deformation at a high temperature, secondary vulcanizing processing benefiting, low smoke and fire resistance, and environmental protection and safety.

The invention relates to a tunnel structure for an expansible stratum. The tunnel structure comprises a steel rack sprayed concrete primary support brace, a reinforced concrete arc wall lining, an inverted arch and inverted arch filling, wherein a reinforcing steel bar grating truss is disposed in the inverted arch filling over the inverted arch; and a central seepage trench is arranged under the inverted arch. A tunnel structure is adjusted, and tunnel inverted arch curvature is enlarged; a central water trench is replaced by the reinforcing steel bar grating truss is placed in the inverted arch filling, so bearing performance of a base structure is improved; with the arrangements of the side trench and the central seepage trench, underwater in the stratum around the tunnel and the base can be discharged; and stratum expansion deformation and damages to a tunnel lining structure by the expansion and deformation can be reduced.

The present invention relates to an egg-wrapper moon cake with decorative pattern and its making method. Said making method includes the following steps: using 30-50 portions of flour, 15-25 portions of egg, 15-30 portions of sugar and 15-25 portions of vegetable oil, mixing them and making them into cake wrapper material, wrapping stuffing, placing it into mould, embossing, baking in baking oven, after the cake is cooked, taking out from mould and cooling so as to obtain the invented moon cake.

A method for manufacturing a three-dimensional molded product capable of performing support at high accuracy using a support material having sufficient hardness and rigidity, capable of removing the support material efficiently after molding, and requiring no finishing step in manufacturing a three-dimensional molded product by an inkjet optical molding method, and a three-dimensional molded product manufactured by this method. A roughly molded product formed from a model material forming a molded product and a support material supporting the shape of the model material during molding is immersed in a washing liquid. The support material swells at a swelling ratio of 10% or more, and is thereby peeled from an interface with the model material having a swelling ratio of 1% or less. Then, the support material is easily and completely removed without applying an external force. Furthermore, a three-dimensional molded product can be manufactured with high accuracy and high efficiency.

The invention relates to the technical field of silicone rubber materials, in particular to a fireproof silicone rubber material and a preparation method thereof. Raw materials of the fireproof silicone rubber material may comprise a component A and a component B. The component A comprises first silicone rubber, white carbon black, aluminum hydroxide, wollastonite, silicone oil and a silane coupling agent; and the component B comprises second silicone rubber, magnesium oxide and boric acid. The fireproof silicone rubber material can quickly undergo a decomposition reaction when meeting high temperature or flames of 400 DEG C or above so as to release gas for oxygen isolation and flame retardance, and residues quickly form a hard shell, so expansion deformation is small, good fireproof performance, oxygen isolation performance and flame retardance are achieved, self-extinguishing can be achieved when the material is separated from a fire, and good processability and low cost are achieved; and the material can function as a fireproof layer and an oxygen barrier layer simultaneously when applied to wire and cable structures.

The invention discloses a fire clay for a silica brick building body of an industrial kiln stove. The fire clay contains powder materials composed of a main raw material and an auxiliary raw material and an additive, wherein fused quartz aggregate SiO2 occupying equal to or larger than 99.5% is adopted as the main raw material, silicon fume SiO2 occupying equal to or larger than 94% is adopted as the auxiliary raw material, and the additive is phosphoric acid or aluminium dihydrogen phosphate solid. The fire clay has the advantages of being very small in thermal expansion coefficient and capable of reducing expansion and deformation of the silica building body in the temperature rising process of the stove and enabling the stove to be simple to operate and safe and reliable. The fire-resisting degree of the fire clay reaches above 1730 DEG C, is high in SiO2 content and free of CaO, accordingly is high in high-temperature alkali-resistant corrodibility, and the combustion condition at the reducing atmosphere is met. The fire clay is small in granularity, high in viscosity and simple in masonry construction, can meet the requirement that the masonry mortar joint is smaller than 1.5mm, ensures masonry quality and can prolong service life of the kiln stove.

The invention belongs to the technical field of auto parts, and discloses a small-diameter high-speed wheel device of an unmanned system test platform fake car. The device comprises a metal hub, a rubber tire encapsulating the metal hub and an axle; the metal hub is of an integrated structure and comprises a rim, a center plate, a bearing block, a brake disc and radiating rib plates; the rim and the bearing block are fixedly connected through the center plate and a plurality of the radiating rib plates; the brake disc is located at one end of the bearing block; a pair of oppositely-arranged tapered roller bearings is arranged in the bearing block; the center plate is in the shape of a circular ring, and a plurality of air duct holes are evenly distributed in the circumferential direction;and the axle is fixed to the metal hub through a shaft shoulder and locknuts. According to the device, the overall outer diameter of a wheel can be smaller than 110 mm, and the device has the good heat dissipation capability and can run at the high speed higher than or equal to 50 km/h under the heavy load.

The invention discloses an expanding and blocking preventing device used for radial hole forming of a pipeline, and belongs to the technical field of oil and gas storage and transportation safe operation. The expanding and blocking preventing device comprises parallel reinforcing ribs, a parallel double-arch rib plate, an inclined rib plate and a center positioning plate, and is characterized in that the parallel reinforcing ribs are composed of two parallel edges; the center positioning plate is round inside and square outside; the two ends of the center positioning plate and the two edges of the parallel reinforcing ribs are fixed; the parallel double-arch rib plate comprises two side faces of the same structure; the lower portions of the side faces are each of an arch-shaped structure; the radian of each arch-shaped structure is consistent with the radian of the outer diameter of the pipeline where a hole is about to be formed; the upper portions of the two side faces and the two edges of the parallel reinforcing ribs are fixed respectively; and the lower plane of the center positioning plate is tangent to the arc tops of the arch-shaped structures. The expanding and blocking preventing device is used in radial hole forming operation of the oil and gas pipeline under pressure; due to the fact that the expanding and blocking preventing device is pre-welded before hole forming, the problem that a saddle-shaped arc plate is deformed because of internal stress release in the hole forming cutting and separating process, and consequently a cylindrical cutter is expanded and blocked is solved; and the hole forming success rate is increased.

The invention discloses a multi-mining-type high-saturability steel wire-chinlon composite body OTR radial tire. The multi-mining-type high-saturability steel wire-chinlon composite body OTR radial tire comprises a crown, a tire shoulder, a belted layer, tire body cord fabric, sidewall rubber and a tire bead. Shoulder pad compound is arranged at the joint part of the belted layer and the tire shoulder. Rubber cores and steel wire rings are arranged on the tire bead part. The belted layer comprises a steel wire cord fabric layer I, an insulating rubber plate and a steel wire cord fabric layer II. The insulating rubber plate is located between the steel wire cord fabric layer I and the steel wire cord fabric layer II. The rubber cores are formed by splicing upper triangular rubber core bodies and lower triangular rubber core bodies. The abrasion resistance of the OTR radial tire is about 20% higher than that of bias OTR tires, the oil saving performance of the OTR radial tire is about 13% higher than that of the bias OTR tires, the comprehensive service life of the OTR radial tire is about 50% longer than that of the bias OTR tires, and the OTR radial tire has high cost performance.

The invention discloses a safe self-controlled temperature type heat tracing cable which comprises a PTC core belt, an insulating layer, a metal shielding layer and a wear-resistant sheath layer, wherein the insulating layer, the metal shielding layer and the wear-resistant sheath layer covers the PTC core belt in sequence; the PTC core belt consists of two heating leads arranged in parallel and a PTC material layer covering each heating lead; diatomite is modified through cationic polyacrylamide so as to be positively charged and have good compatibility, electrical conductivity and mechanical property of improving a matrix material. The cable prepared by the invention is excellent in electrical property, good in heat resistance, aging resistance and wear resistance, small in swelling deformation, low in smoke, retardant in flame, environmentally friendly, safe and worthy of being popularized.

The invention provides an electrode plate and a battery. The electrode plate comprises a current collector, the current collector comprises a first surface and a second surface which are oppositely arranged, at least one surface of the first surface and the second surface is provided with an active material layer, the side, far away from the current collector, of the active material layer is provided with a protruding point layer, the thickness of the protruding point layer decreases progressively from a first end of the current collector to a second end of the current collector, and the first end of the current collector and the second end of the current collector are two opposite ends of the current collector. According to the embodiment of the invention, the problem that a coiled electrode plate is relatively small in expansion space, so that a battery cell is easy to deform in a circulating process and the liquid storage capacity of the battery cell is relatively low can be solved.

The invention relates to a multifunctional rubber dipping machine for preparing a chinlon 6 cord fabric. The multifunctional rubber dipping machine is characterized in that the multifunctional rubberdipping machine comprises a system rack, the system rack sequentially comprises an unwinding device, a front traction device, a slow storage cloth device, a middle traction device, a dipping host, a front drying room, a rear drying room, a first roller set, a stretching drying room, a second roller set, a shaping device, a third roller set, and a winding device along the cord fabric from front toback. The multifunctional rubber dipping machine for preparing the chinlon 6 cord fabric has the advantages of high production efficiency, high energy utilization rate, and low product dry-heat shrinkage rate.

The invention relates to an air static pressure high-speed motorized spindle based on a titanium-aluminum alloy mandrel. The air static pressure high-speed motorized spindle comprises a base, a shell, the mandrel, an axial air bearing, a supporting assembly, a cooling assembly and a wedge-shaped motor assembly. The mandrel is made of titanium-aluminum alloy, and the axial air bearing is connected to the mandrel in a sleeved mode. The supporting assembly is arranged in the shell to support the mandrel, and the cooling assembly is arranged on the outer side of the supporting assembly. The wedge-shaped motor assembly comprises a stator assembly and a rotor assembly, the stator assembly is fixedly connected with the supporting assembly, and the core shaft is sleeved with the rotor assembly. The wedge-shaped motor assembly generates magnetic pulling force perpendicular to the surface of the rotor assembly under the electrified condition, and the resultant force of the magnetic pulling force is parallel to the direction where the mandrel is located. After the wedge-shaped motor assembly is powered on, magnetic pulling force perpendicular to the surface of the rotor can be generated, part of axial force fluctuation, caused by external force, of the mandrel is offset, and the bearing capacity of the axial load of the electric spindle is improved. And the heating value of the thrust plate in the rotating process can be reduced through the magnetic pulling force, and deformation of the motorized spindle is reduced.

The invention relates to a stator assembly and a motor having the stator assembly. The stator assembly comprises a stator iron core (100, 500) and a stator support (200, 600) for supporting the statoriron core (100, 500). The stator assembly further comprises an airflow conveying device, wherein the airflow conveying device is configured to convey a first cold airflow to the radial side surfaces,opposite to the air gap side, of the stator iron core (100, 500) in the radial direction of the stator iron core (100, 500). The other side, opposite to the air gap, of the stator can be cooled in the operation process of a motor, so that the radial two sides of the stator are cooled at the same time, expansion deformation of the stator core is reduced, and the air gap is prevented from narrowing; and high-temperature baking of a magnetic pole of the stator is prevented, so that the magnetic pole is protected, and the service life of the motor is prolonged.