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532results about How to "Reduce slip" patented technology

Prefabricated heat preservation wall body

The invention belongs to the technical field of civil engineering, and concretely relates to prefabricated heat preservation wall body. The prefabricated heat preservation wall body consists of a heat preservation layer, a concrete internal wall panel, a concrete external wall panel and an FRP connecting piece, the concrete internal wall panel is internally provided with longitudinally arranged steel bars and transversely arranged steel bars, the concrete external wall panel is internally provided with longitudinal arranged steel bars and transversely arranged steel bars, the FRP connecting piece is of a recumbent H structure and consists of a ventral shield and flange girths, two flange girths are provided in the invention and are respectively arranged at the two ends of the ventral shield; the heat preservation layer is arranged between the concrete internal wall panel and the concrete external wall panel and is internally provided with hole slots which are arranged in a crisscross way, and the FRP connecting piece is inserted in the hole slots; the end of the heat preservation wall body is provided with a splice bar which is of a U-shape structure, the two ends of the splice bar are respectively inserted into the concrete external wall panel and the concrete internal wall panel. The invention realizes a novel prefabricated heat preservation wall body with an integral structural function, has the advantages of low heat conductivity coefficient, good corrosive nature, simple and convenient construction and the like, and has relatively extensive application prospect in the field of constructional engineering.
Owner:TONGJI UNIV

Insert reinforced nylon pipe pliers and manufacturing method

The invention relates to a hand tool and a manufacturing method, in particular to pipe pliers and a manufacturing method. The pipe pliers comprise a movable jaw, a fixed jaw, an adjusting nut and a pliers handle. The pipe pliers are characterized in that: the pliers handle consists of glass fiber reinforced polyamide 66 and an insert embedded into the glass fiber reinforced polyamide 66; the insert is in a symmetric structure and is designed in transverse H-shaped variable section and equal strength along the axis of the pliers handle, the insert has reinforcing effect on the stress concentrated section of the pipe pliers, and the rigidity and the strength of the nylon pliers handle are reinforced; a web plate at the transverse H-shaped part of the insert is provided with multiple holes, and nylon is filled into the holes during injection molding, so that the bonding strength of the insert and the nylon can be reinforced and tearing is prevented during working; the insert can be conveniently positioned in a die during injection molding and machining; and the manufacturing method comprises the following steps of: insert casting or profile blanking, insert de-burring and filleting, surface treatment such as insert shot blasting and the like, insert coupling treatment, insert preheating, positioning and assembly of the insert in the die, injection molding, cooling, boiling, spraying, pipe pliers assembly and detection.
Owner:JIANGSU UNIV

Steel deck composite pavement structure laying grid type shear connectors

The invention discloses a steel deck composite pavement structure laying grid type shear connectors. The steel deck composite pavement structure comprises a steel deck plate, a lightweight concrete lower surface layer laid on the steel deck plate and an asphalt concrete upper surface layer laid on the lightweight concrete lower surface layer, wherein a waterproof bonding layer is arranged between the lightweight concrete lower surface layer and the asphalt concrete upper surface layer; the grid type shear connectors are laid in the lightweight concrete lower surface layer, the grid type shear connectors comprise multiple longitudinal connectors which are laid in the longitudinal direction of a bridge and multiple transverse connectors which are laid in the transverse direction of the bridge, and the multiple longitudinal connectors are connected into a whole through the multiple transverse connectors; the longitudinal connectors are of long strip-shaped steel plates fixed on the steel desk plate and the transverse connectors are of steel bar bundles; and a plurality of holes are formed at the middle parts of the long strip-shaped steel plates from the front to the back. The steel deck composite pavement structure disclosed by the invention has the advantages of simple structure, reasonable design, simplicity and convenience in construction and good stress performance, and can solve the problems that an asphalt surface layer of the existing steel desk pavement structure is prone to rutting, slippage delamination, upheaval and the like.
Owner:CHANGAN UNIV

System and method for controlling deformation of deep and large foundation pit through partition unloading

The invention relates to the field of construction of deep and large foundation pits, and in particular relates to a system and a method for controlling deformation of a deep and large foundation pit through partition unloading. The method for controlling deformation of the deep and large foundation pit through partition unloading comprises the following steps of: increasing a temporary partition wall, and dividing the deep and large foundation pit into a large foundation pit far away from a protection object and a narrow foundation pit close to the protection object for performing partition unloading in two areas, so that the deep and large foundation pit is relatively far away from the protection object; and digging the large foundation pit far away from the protection object, finishing pouring of a bottom plate of the large foundation pit through rapid construction, and controlling bulge inside the pit and settlement outside the pit due to the large pit unloading. Meanwhile, because the pit close to the protection object is the narrow foundation pit, and resilience in the pit and deep soil body slippage are small, the lateral deformation of the narrow foundation pit is controlled in an emphasized mode in the process of digging the narrow foundation pit, so that the protection object close to the narrow foundation pit is controlled and protected; and therefore, the aims of reducing and controlling the influence of excavation of the large and deep foundation pit on the deformation of the protection object are achieved.
Owner:TONGJI UNIV ARCHITECTURAL DESIGN INST GRP CO LTD

Small crawler multifunctional chassis for companion planting

The invention discloses a small crawler multifunctional chassis for companion planting. The chassis comprises an operator console, a frame, an engine, a crawler running gear, a hydrostatic system, a reduction gearbox and a suspension mechanism, wherein the operator console, the engine and the suspension mechanism are arranged on the frame; the crawler running gear is arranged below the frame and comprises a running crawler and a crawler driving wheel which drives the running crawler; the reduction gearbox is connected with a crawler driving wheel in the crawler running gear; and the hydrostatic system is arranged above the reduction gearbox and connected with an output driving wheel of the engine and the crawler running gear through a belt and the reduction gearbox respectively. The small crawler multifunctional chassis has the advantages of suitability for a companion planting way, flexible and convenient use, convenience for mounting various small agricultural instruments, time and labor saving, great reduction in the labor intensity of farmers, improvement on the production efficiency, small volume, light weight and capability of finishing multiple kinds of operation in companion planting fields and completely avoiding the phenomenon that the rear end of the conventional mini tiller lifts to hurt people in the process of moving backwards.
Owner:SICHUAN AGRI UNIV

Adhesive tape pasting and folding device for insulation paper and pasting and folding method thereof

The invention relates to an adhesive tape pasting and folding device for insulation paper. The device comprises a discharging mechanism, a pasting main body and a machine frame, wherein the discharging mechanism comprises an upper rotating shaft and a lower rotating shaft, the lower rotating shaft is sleeved with insulation paper, the upper rotating shaft is sleeved with two adhesive tapes, the two adhesive tapes are positioned above the two side edges of the insulation paper; the pasting main body comprises a pre-pressing rod and a counter-pressing roller, the lower ends of the two sides of the pre-pressing rod are fixed on the machine frame, the adhesive tapes and the insulation paper penetrate through the lower portion of the pre-pressing rod, so that the adhesive tapes are adhered to the insulation paper, the counter-pressing roller comprises an upper counter-pressing roller and a lower counter-pressing roller, the upper counter-pressing roller and the lower counter-pressing rollerare rotationally fixed on the machine frame through a mounting seat with adjustable pressure, the upper counter-pressing roller and the lower counter-pressing roller are driven by a driving device torotate and roll the insulation paper, then the insulation paper is discharged, a folding mechanism is arranged between the pre-pressing rod and the counter-pressing roller; a cutting mechanism used for cutting folded insulation paper is fixed on the machine frame.
Owner:福州鼎之诚机电设备有限公司
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