35results about How to "Strong resistance to twisting" patented technology

The invention discloses a connection rod mechanism of a mold clamping apparatus. Two same sets of connection rods are arranged symmetrically up and down. Each set of connection rods comprises a first small connection rod, a second small connection rod, a first rear connection rod, a second rear connection rod, a middle rear connection rod, a first front connection rod, and a second front connection rod. The middle rear connection rod is positioned between the first rear connection rod and the second rear connection rod. The rear ends of the three connection rods are hinged to a first connection rod support. The rear end of the first front connection rod is clamped between the front ends of the first rear connection rod and the middle rear connection rod, and is hinged therewith. The second front connection rod is arranged between the front ends of the middle rear connection rod and the second rear connection rod, and is hinged therewith. The front ends of the two connection rods are respectively hinged with a second connection rod support. The first small connection rod is parallel to the second small connection rod. One end of the small connection rods is hinged with the middle rear connection rod, and the other end is hinged to a crosshead. The connection rod mechanism provided by the invention is advantaged in stable structure and good twisting force resistance. Therefore, a technical difficulty of complicated mold adjusting of prior arts is solved.

The invention discloses an equilateral triangle prismatic reinforcing bar section consisting of an inner base, transverse bars and longitudinal bars. The equilateral triangle prismatic reinforcing bar section is characterized in that the section of the inner base is in an equilateral triangle prismatic shape; the equilateral triangle prism is a polygonal surface formed by inwards concaving each side of an equilateral triangle; three sides of the equilateral triangle prism are respectively inverted V-shaped; three angles of the equilateral triangle prism are connected with the three sides of the equilateral triangle prism into a whole and are connected with square longitudinal bars; three inverted V-shaped surfaces of the equilateral triangle prism are connected with the equilateral triangle prism into a whole; and a plurality of crescent, inverted V-shaped or angular, herringbone or twisted strip transverse bars are arranged on the three inverted V-shaped surfaces. The invention has the advantages that the perimeter of the section of the reinforcing bar section is longer; the three surfaces of the equilateral triangle prim have large surface friction force, so that the bond stress, the tensile strength and the vibration resistant capability of reinforcing bars in the concrete can be remarkably improved; meanwhile, the compression resistant, bending resistant, bending resistant and twisting resistant forces are stronger than those of the traditional reinforcing bar section. The reinforcing bar section is suitable for large-sized piers, dams, upright posts of expressway bridges, building top columns, tunnels and the like and is an ideal equilateral triangle prismatic reinforcing bar section.

The invention provides a low-voltage draw-out intelligent distribution switch cabinet, comprising a cabinet frame, a cabinet shell and a cabinet door (22), wherein columns of the cabinet frame are C-shaped colums (18) with modulus holes (17) and reinforcing ribs (16); and the cabinet frame is internally provided with an assembly room with functional unit assemblies, a busbar room with busbars anddistribution busbars, a cable room with incoming and outgoing cables, a horizontally-arranged assembly room, connection bars for guard lines and neutral lines which are horizontally arranged below the assembly room and the cable room and vertically arranged in the cable room as well as control line routing slots at the upper part inside the cabinet frame. The switch cabinet has the advantages that: 1, the structure is simple and few parts are used; 2, the buckling resistance and the distortion resistance of the low-voltage draw-out intelligent distribution switch cabinet are higher; 3, the electrical safety is higher; and 4, all the parts are standard mechanical parts which are convenient to replace and dismount.

The invention relates to a composite sheet consisting of a thermoplastic resin and a fiber and a manufacturing method thereof. The manufacturing method comprises the following steps of: performing surface modification on an ultra-high molecular weight polyethylene fiber and preparing a base material; preparing a preimpregnated base material, coating solution of the thermoplastic resin on the basematerial, and performing heat drying on the base material; preparing a prefabricated sheet, and coating thermoplastic resin powder on two sides of the base material, wherein the resin is the same as that used by the prefabricated sheet; and performing hot press molding. The composite sheet, consisting of the thermoplastic resin and the fiber, prepared by the method uses the ultra-high molecular weight polyethylene fiber as an enhanced framework fiber phase and uses the thermoplastic resin as a resin phase. The composite sheet consisting of the thermoplastic resin and the fiber and the manufacturing method thereof adopt an original process to ensure that a product is light in weight and low in forming temperature, has high mechanical properties in particular outstanding impact resistance and distortion resistance, has excellent chemical properties and is easy to process.

The invention belongs to the technical field of closed water connection, and particularly relates to an FRD double-sealed immediate detection closed water socket-and-spigot joint. The problems that inthe prior art, a spigot and a socket possibly make contact with each other and are sealed, the positions which make contact with each other and are sealed are prone to causing connectivity of the interior of a annular space to be interrupted, accordingly, sealing performance detection of a double-sealed socket-and-spigot joint is uncompleted are solved. According to the technical scheme, the FRDdouble-sealed immediate detection closed water socket-and-spigot joint comprises a spigot and a socket, the spigot is a joint part of an inserting-in end, and the socket is a joint part of a socket end; the outer wall of the spigot is provided with an annular pressure test groove, the two sides of the pressure test groove are provided with annular sealing ring installation grooves correspondingly,and sealing rings are installed in the sealing ring installation grooves; and the socket is provided with pressure test holes which correspond to the pressure test grooves. In addition, baffles are arranged in the pressure test grooves. The FRD double-sealed immediate detection closed water socket-and-spigot joint is suitable for connection of drainage pipelines.

The invention relates to a mining anti-explosion trackless rubber tire vehicle chassis, belonging to the technical field of coal mine trackless auxiliary transport devices; the mining anti-explosion trackless rubber tire vehicle chassis comprises an anti-explosion engine arranged above a front axle, a gearbox connected with the anti-explosion engine, a main transmission shaft, a power divider arranged on the middle-rear part between the front axle and the rear axle, a rear axle planetary differential arranged on the front end of the rear axle, the rear axle, a rear service brake connected with the rear end of the rear axle through a rear brake shaft, a front axle planetary differential arranged on the rear end of the front axle, the front axle, and a front service brake connected with the front end of the front axle through a front brake shaft; and the mining anti-explosion trackless rubber tire vehicle chassis is characterized by realizing convertible all-wheel drive and rear wheel drive, non-differential and differential conversion of rear wheels, backbone beam type structure, flexible front and rear axles, and independent suspension device.

The invention belongs to the technical field of drainage pipes, and specifically relates to a polyolefin drainage pipe with FRD double seal for instant detection of a closed water bell and socket joint. The polyolefin drainage pipe aims at the problem that in the prior art, a socket and a bellmouth may be contacted and sealed, and the contacted and sealed parts may lead to the interruption of theinternal connectivity of an annulus, and then the incomplete detection of the sealing inspection of the double-sealed bell and socket joint may exist. According to the technical scheme, the polyolefindrainage pipe comprises a pipeline, two ends of the pipeline are separately provided with the socket and the bellmouth through an integral forming mode, an annular pressure test groove is arranged onthe outer wall of the socket, and annular sealing ring installation grooves are arranged on both sides of the pressure test groove; and a pressure test hole is formed in the bellmouth, the distance between the pressure test hole and a bellmouth opening is equal to the distance between the middle of the pressure test groove and a socket opening, and in addition, a baffle can be arranged in the pressure test groove. The polyolefin drainage pipe with the FRD double seal for instant detection of the closed water bell and socket joint is applicable to the connection of the drainage pipeline.

The invention belongs to the field of cables, in particular to a modified polypropylene insulated cable with high ampacity and the modified polypropylene insulating material used therein. The cable includes: a conductor, a modified insulation layer, an armor layer and an outer sheath arranged sequentially from the inside to the outside; the outer sheath is a flame-retardant outer sheath; the modified insulation layer is a modified polypropylene Insulating layer, modified polypropylene insulating layer is prepared from modified polypropylene insulating material. The modified polypropylene insulating material is made of polypropylene block copolymerized vinyl monomer; the content of the vinyl monomer is 2-3 wt% of the polypropylene. In the present invention, the cross-linked polyethylene is replaced by the modified polypropylene, which reduces the cost and improves the quality of the insulating layer; the carrying capacity and the actual withstand working temperature of the cable are significantly improved; the modified polypropylene can be recycled and reused, and is more environmentally friendly.

The invention relates to a pile swinger for self-righting cast-in-situ piles, which comprises a pile array composed of several positioning pile sleeves and several standard pile sleeves; the positioning pile sleeves and the standard pile sleeves are connected through a support frame, and the periphery of the support frame is connected with a pin assembly. Ground connection; the top of the standard pile sleeve is connected with a plug-in rod; the top of the positioning pile sleeve is provided with a pile connection hole; the support frame includes an end connecting sleeve sleeved at both ends of the standard pile sleeve and the positioning pile sleeve; The positioning pile sleeve and the standard pile sleeve are connected by a fixed connector. The fixed connector includes two connection platforms A for fixed connection with the end connection sleeve. The connection platforms A are connected by a telescopic mechanism A; the support frame also It includes a number of peripheral connecting columns, which are connected to the positioning pile sleeves and standard pile sleeves on the periphery of the pile array through adjustment connectors. The adjustment connectors include universal connectors and telescopic mechanisms B; Peripheral connection posts.

The invention discloses a high-flame-retardancy nylon composite material resistant to high temperature and a preparing method thereof. The composite material comprises, by weight, 50-85% of polyamide, 6-45% of flame retardant, 0.1-2% of stabilizer and 0.1-12% of other auxiliaries, wherein the flame retardant is hexachloro cyclotriphosphazene graft modified expanded graphite. Nitrogen, phosphorus, chlorine and organic carbon are combined, the synergistic flame retardant capacity can be remarkably improved, the phosphonitrile flame retardant is fixed to the surface of expanded graphite through chemical bonds, dispersity and compatibility of the expanded graphite in a resin matrix are improved, and the problem that small molecular flame retardant in the using process migrates outwards easily is solved.

The invention belongs to the field of cables, in particular to a modified polypropylene insulated multi-core cable with high ampacity. It includes: a core wire group, the core wire group is composed of at least two core wires to realize power transmission; an outer sheath is wrapped outside the armor layer to protect the core wire group and the armor layer; wherein: the The core wire includes a conductor and a modified insulating layer covering the conductor; the modified insulating layer is a modified polypropylene insulating layer, and the modified polypropylene insulating layer is prepared from a modified polypropylene insulating material. The present invention replaces cross-linked polyethylene with modified polypropylene, which reduces the cost and improves the quality of the insulating layer; the current carrying capacity and the actual withstand working temperature of the cable are significantly improved; the modified polypropylene can be recycled and reused, making it more environmentally friendly; The structural stability of the overall cable is higher, and the ability to resist twisting is stronger; the cable has good heat conduction and heat dissipation performance after doping Si‑C‑Al.

The invention relates to accurate automatic filling pile centralizing equipment and an application method thereof. The accurate automatic filling pile centralizing equipment comprises supporting legs,a connecting frame, a connecting pile, a pile filler and other components, wherein the connecting frame comprises a connecting plate, and the lower portion of the connecting plate is connected with aguide frame; the connecting pile is connected to the connecting plate and the guide frame; the supporting legs are connected to the edge of the connecting plate through connecting rods; the pile filler is connected to the bottom of the guide frame; the middle of the connecting plate is provided with an embedment hole; the inner wall of the embedment hole is provided with a connecting pile squeezer; the connecting pile squeezer is internally connected with the connecting pile; the connecting plate and the supporting legs are connected through the connecting rods; gyroscope sensors are arrangedat the joints of the connecting plate and the connecting rods; supporting leg supporting plates, floating plates and supporting airbags are arranged in an annular cavity between the floating plates and the supporting plates in an arrayed mode. The application method comprises the steps of conducting filling on a standard pile through the pile filler, pushing the connecting rods through the supporting airbags, accordingly, righting the connecting plate and then righting the connecting pile.

The invention relates to an environmentally friendly and energy-saving interior decoration new material plate, including a base plate, the base plate is provided with an installation cavity penetrating through the front and rear sides, and a hollow cylinder extending in the same direction as the installation cavity is provided in the installation cavity. The base plate includes an upper plate and a lower plate, the upper plate and the lower plate are bonded by an adhesive, and a part of the hollow cylinder is located in the upper plate, and another part of the hollow cylinder is located in the lower plate In addition, the outer surfaces of the upper board and the lower board are bonded with inorganic flame-retardant glass magnesium boards, which is an environmentally friendly and energy-saving interior decoration new material board, which not only has a fireproof function, but also has a channel for wiring.