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95results about How to "Reliable quality" patented technology

Construction method of underground deep foundation concrete by reverse formworks

InactiveCN102817372APrevent quicksand and soil collapseReliable qualityExcavationsRebarCushion
A construction method of underground deep foundation concrete by reverse formworks is characterized by including the following steps of firstly, constructing supporting piles; and secondly, excavating foundation pits to set up reverse formworks; thirdly, pouring concrete of the reverse formworks; and fourthly constructing concrete foundation. The step of excavating the foundation pits to set up the foundation formworks includes the following steps of firstly, excavating the foundation pits when the supporting piles reach preservation strength; secondly, excavating to the bottom elevation of the foundation pits to make cushion; thirdly, accurately locating for foundation marking on the cushion; and fourthly, setting up reverse formworks according to the marking. The step four includes: when buried depth of the foundation is larger than -5meters, formworks and walls of the foundation pits are welded by 6- 12mm corner residual steel bars and colligated into steel bar meshes, wool forms for making the reverse formworks are more than seven layers of sandwiched plates, and formwork setting height is equal to height of foundation concrete. The construction method of the underground deep foundation concrete has the advantages that novel deep foundation is additionally built between adjacent buildings, and displacement and destroy of adjacent buildings are avoided during excavation and construction.
Owner:MCC5 GROUP CORP SHANGHAI

Prefabricated wall, prefabricated wallboard, construction method of prefabricated wall and production method of prefabricated wallboard

The invention relates to a prefabricated wall, a prefabricated wallboard, a construction method of the prefabricated wall and a production method of the prefabricated wallboard, belonging to the technical field of building walls. The prefabricated wall comprises steel reinforcement cages arranged at floors, wherein each steel reinforcement cage comprises longitudinal main reinforcements and reinforcement stirrups fixedly arranged on the main reinforcement; the outer surface of each steel reinforcement cage is fixedly provided with two first dismounting-free heat insulation template; each steel reinforcement cage is internally provided with a limiting ring and a locating steel tube extending along the length direction of the main reinforcement; the locating steel tubes are arranged in the limiting rings; the locating steel tubes in the steel reinforcement cages at an upper floor are connected with the adjacent locating steel tubes in the steel reinforcement cages at a lower floor through locating tube sleeves; the mutually-abutted main reinforcements of the steel reinforcement cages at the upper floor and at the lower floor are welded together fixedly; and cast-in-place concrete is solidified in the steel reinforcement cages and holes of the locating steel tubes. The prefabricated wall, the prefabricated wallboard, the construction method of the prefabricated wall and the production method of the prefabricated wallboard have the advantages that the structure is reasonable and rapid construction and installation are conveniently realized.
Owner:史世英

Production method for chemical fiber and polyester composite yarns

The invention relates to a production method for chemical fiber and polyester composite yarns, in particular to a method for producing chemical fiber and polyester composite yarns of partially oriented yarns (POY) and fully drawn yarns (FDY) by one kind of equipment through a one-step method. The POY and the FDY are subjected to composite spinning on the same winding frame, and the spinning process can simultaneously meet process flows required by producing the two kinds of yarns; the FDY and the POY enter a draft area from the same side of a first pair of drawing rollers, wherein the FDY pass through the first pair of drawing rollers consisting of a large-diameter heat roller and a large-diameter heat roller, and, together with the POY, pass through a yarn guide roller below the first pair of drawing rollers, and the FDY and the POY are combined and compounded into a bundle of yarns on the yarn guide roller; and the composite yarn bundle passes through a second pair of drawing rollers consisting of a large-diameter heat roller and a non-heating small-diameter separator roller to form the composite yarns. The effects of saving a production space and saving energy are obvious, the processed fiber composite yarns are reliable in quality, stable in process and high in cohesiveness and the dying property is superior to that of the conventional product.
Owner:北京德厚朴化工技术股份有限公司

Deep chemical milling method of TA12 and TA15 titanium-alloy large-scale structural components

The invention relates to the field of deep chemical milling of titanium-alloy large-scale cylindrical parts, in particular to a deep chemical milling method of TA12 and TA15 titanium-alloy large-scale structural components. The deep chemical milling method comprises the following technological lines: degreasing, washing, pickling, washing, coating with a protecting adhesive, marking, removing a protecting adhesive film on a to-be-milled surface, chemically milling and conducting vibrating finishing. The method comprises the following steps: a titanium-alloy cylindrical part is processed into a thin-walled grid rib by adopting a deep chemical milling technology, and the thin-walled grid rib is primarily marked and chemically milled to obtain a chemical milling machine case shell with all mounting bases. The manufacturing of integral, thin-walled and grid-shaped titanium-alloy large-scale cylindrical structural components is completed by adopting the titanium-alloy deep chemical milling technology, and the requirement that the large-scale cylindrical parts are chemically milled to form the grid-shaped structure is met; and deformation, caused by machining, is avoided fundamentally, the problem of low strength caused by welding is solved, the overall rigidity of the component is improved, and besides, the production cycle is shortened, and the structural weight is reduced.
Owner:SHENYANG LIMING AERO-ENGINE GROUP CORPORATION

Mixed soil extruded and cured precast pile for soft foundation treatment as well as construction method

The invention discloses a mixed soil extruded and cured precast pile for soft foundation treatment as well as a construction method. Foundation soil is connected with drill holes which are connected with mixed soil extruded and cured precast pile bodies, the mixed soil extruded and cured precast pile bodies are connected with cement mortar through a central hole, and the cement mortar is connected with a seamless steel pipe which is connected with a grouting pipe. The construction method comprises the following steps: A, a vibrating pipe-sunk pile machine is adopted for hole forming; B, the mixed soil extruded and cured precast pile bodies are placed; C, the seamless steel pipe is placed, and a vibrating sunk pipe is pulled out; D, grouting is performed: the a seamless steel pipe is connected with the grouting pipe, pressure cement mortar is grouted into the seamless steel pipe, and the seamless steel pipe and the precast pile bodies form the integral mixed soil extruded and cured precast pile after mortar curing; E, integral construction is performed. The mixed soil pile is precast by waste construction waste and common clay, the manufacture is convenient and fast, the quality is reliable, the transport cost is reduced, modular piling construction is efficient and convenient, and the integral bearing capacity of a foundation is improved effectively.
Owner:WUHAN ZHONGLI GEOTECHN ENG

Intelligent self-elevating retention wall

The intelligent self-elevating retention wall which is arranged on a river levee and in single-section or multi-section arrangement comprises a concrete preformed groove, a retention wall body, a buoyant box, a limiting cover plate, a water inlet grate, a drainage channel and a water stopper. The concrete preformed groove is a rectangular longitudinal groove excavated in the river levee; the retention wall body is in an interlayer structure formed by two rectangular steel plates, and the buoyant box is in a premade empty box structure and capable of moving up and down along the side wall of the concrete preformed groove; the water inlet grate is fixed to a water side of the top end of the concrete preformed groove, the drainage channel is positioned on a water side of the bottom of the concrete preformed groove, and the tail end of the drainage channel is provided with the water stopper; the limiting cover plate is fixed to a backwater side of the top end of the concrete preformed groove, and the retention wall body moves up and down between the limiting cover plate and the water inlet grate. The intelligent self-elevating retention wall has the advantages that the retention wall is reliable in quality and simple in construction, the retention wall ascends to give play to wave walls in occurrence of flood and automatically descends to hide in a dam body after flood, and accordingly safety discharging can be guaranteed, and overall intelligence, avoidance of energy consumption and high economy are realized.
Owner:THE FRONTIER TECH RES INST OF TIANJIN UNIV

Variable diameter stirring type anchor rod and construction method thereof

The invention provides a variable diameter stirring type anchor rod and a construction method thereof, and belongs to the technical field of the building construction equipment. According to the invention, the technical problem that pulling resistance generated by the traditional anchor rod on a cemented soil enlarging body is not big enough is solved. The anchor rod comprises an anchor rod body, wherein the front end of the anchor rod body is provided with at least one slurry discharging tube and is also fixedly provided with at least one stirring body; the stirring body comprises a first stirring vane which is fixedly connected with the tube wall of the anchor rod body and is vertical to the center line of the anchor rod body; the stirring body also comprises a second stirring vane; the first stirring vane is hinged to one end of the second stirring vane; the second stirring vane can swing in a plane on which the vane surface of the first stirring vane is positioned along a hinged point; a spacing assembly which enables an included angle between the first stirring vane and the second stirring vane to be smaller than 180 degrees is arranged between the second stirring vane and the first stirring vane. The construction method comprises the following steps of: putting the anchor rod, drilling holes and grouting. The invention has the advantages that the constructed cemented soil enlarging body has bigger pulling resistance and the like.
Owner:FANGYUAN CONSTR GRP REAL ESTATE DEVT CO LTD

Using method of medicament used for chemically oxidizing and restoring pesticide contaminated soil

The invention discloses a using method of a medicament used for chemically oxidizing and restoring pesticide contaminated soil. The medicament comprises a component A and a component B. The component A comprises sodium sulfate, and the component B comprises sodium dodecyl sulfate and calcium hydroxide. The method comprises the steps that 1, the adding ratio of the component A is calculated; 2, the using amount and matching ratio of the component B are calculated, and the component B is prepared; 3, soil is pretreated; 4, the component B is added into the contaminated soil, and the mixture is stirred and mixed to be uniform; 5, the component A is added into the soil into which the component B is added, and the mixture is stirred and mixed to be uniform; 6, the moisture content of the soil into which the component A and the component B are added is adjusted, and maintenance is carried out for 3-7 days; and 7, the soil pH is detected and analyzed in the maintenance period to ensure that the soil pH reaches 10.0 after the mixture is mixed to be uniform. By means of the using method of the medicament used for chemically oxidizing and restoring pesticide contaminated soil, pesticide matter difficult to degrade in soil can be rapidly and efficiently oxidized, decomposed and removed.
Owner:SHANGHAI GREENMENT ENVIRONMENTAL TECH CO L

Rear sealing head heat-insulation layer structure for solid rocket engine and forming method of rear sealing head heat-insulation layer structure

The invention discloses a rear sealing head heat-insulation layer structure for a solid rocket engine and a forming method of the rear sealing head heat-insulation layer structure, and belongs to thefield of design and manufacturing of heat insulation layers of heat protection structures for solid rocket engines. At present, a rear sealing head heat-insulation layer structure difficulty meets theuse requirements for light weight, ablation resistance, scouring resistance, high-efficiency manufacturing and low cost simultaneously. According to the rear sealing head heat-insulation layer structure, a heat-insulation body serves as a structural support, pre-formed light rubber heat-insulation materials are arranged and distributed at a large convergence end, pre-formed curing resin heat-insulation materials are arranged and distributed at a narrow convergence channel, the connection positions are in transition butting and lapping through stair-type steps, and overall one-time heat-curingforming is conducted to form an integrated structure through a forming mold tool. Practice proves that all interfaces of the rear sealing head heat-insulation layer structure prepared through the forming method are bonded reliably, the forming efficiency is high, comprehensive performance of a product is good, and the comprehensive use requirements of the rear sealing head heat-insulation structure for the engine can be simultaneously met well.
Owner:HUBEI INST OF AEROSPACE CHEMOTECH

Oil bottom case oil discharge plug seat welding device

The invention relates to an oil bottom case oil discharge plug seat welding device, which consists of a speed regulation motor, a bracket, position limiting blocks, a rotating mold, a compression mandrel, a welding gun, an angle regulator, an ascending and descending regulator, a left and right regulator, a support frame, a protection plate, an electric control box, a welding machine and the like, wherein the speed regulating motor drives the bracket to do horizontal rotation, a plurality of position limiting blocks are arranged on the bracket, the rotating mold is arranged on the position limiting blocks, a workpiece is fixedly arranged on the rotating mold through the compression mandrel, in addition, a welding hole of the workpiece is concentric with the rotating mold, the upper end of the workpiece is provided with the welding gun, the welding gun is arranged on the angle regulator, the angle regulator, the ascending and descending regulator and the left and right regulator form a whole and are fixedly arranged on the support frame, one side of the protection plate is provided with the electric control box, and the welding machine is placed at one side of the electric control box. The oil bottom case oil discharge plug seat welding device has the advantages that the automatic welding is realized, the quality is reliable, the safety performance is good, the production efficiency is high, and the like.
Owner:乳山市黄海汽车配件有限公司

Production technology of wall cloth

The invention discloses a production technology of a piece of wall cloth, which is characterized in that the production technology comprises following steps: producing a piece of under layer cloth: the piece of under layer cloth is acquired by adopting a wide textile machine to produce, nano space cotton to knit and shaping and sorting the nano space cotton; manufacturing a composite layer: the composite layer is acquired by adopting the textile machine to knit cloth material and cotton, shaping, sorting and decorating the knitted cloth material and cotton and then post-processing the knitted cloth material and cotton; processing a decorative layer: the decorative layer is acquired by dyeing, shaping sorting, decorating and post-processing the surface of the decorative layer; compositing the piece of wall cloth: the piece of the wall cloth is acquired by combining together the under layer, the decorative layer and the composite layer with a composite machine; integrating the piece of wall cloth: the wall cloth and plant glue past are composited by the composite machine under the condition of 50 DEG C; sticking the wall cloth and a wall surface: the wall surface is flattened and moisture prevention of the wall surface is processed; and ripping out the plant glue paste and combining the wall cloth and wall surface to make the wall cloth and the wall surface stick.
Owner:JIANGSU FULIYA NEW MATERIAL TECH CO LTD
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