35results about How to "Improve section strength" patented technology

A dual cell rear corner pillar for the operator's compartment of a pick-up truck is formed with longitudinally oriented front and rear tubular members. The dual cell tubular construction increases section strength for the rear corner pillar while maintaining packaging constraints for the rear pillar design. The front tubular member is nested against the rear tubular member to provide support therefor longitudinally and vertically. The forward tubular member is welded to the door opening panel seal flange, while the rearward tubular member is welded to the window flange and the back panel flange. The forward and rearward tubular members are also welded to one another to form a strong pillar structure. The dual cell configuration resists buckling and shares loading. The rear tubular member wraps around the front tubular member and transitions into the roof rail area, shortening the unsupported moment arm of the rear tubular member.

A construction method of the locking steel pipe pile cofferdam can be carried out according to the following procedures: first is the processing of the steel pipe pile: a female thread and a male thread are fabricated on the spiral pipe; second is that steel pipe piles are connected mutually into an integrated steel pipe pile along the surrounding of the pile cap from beginning to end, all of which are lifted to the place and settled to the designed location by machine; third is grouting of the locking: the locking place of the female thread and the male thread is lined with a clothe bag and the slurry is poured into the bag; fourth is that a support in a cofferdam is arranged; final is that the concrete pouring of a sealing bottom is carried out. The invention has the advantages and the positive effects as follows: 1. flexible connection and being suitable for the assembly of various cofferdams; 2. large section strength and stiffness, and simple and convenient support; 3. simple processing and no need of the large-scale machinery and equipment, no requirement of large-scale floating facilities, and synchronized installation with the pile foundation work; 4. convenient operation and no limitation of the deepwater and the sludge; 5. sufficient rigidness which meet the settlement stiffness and strength with machinery; 6. strong leak tightness.

A fishing reel handle assembly has a handle arm, a knob shaft, and a handle knob. The handle arm is relatively non-rotatably attached to a distal end of the handle shaft. The knob shaft is fixed to an end of the handle arm and extends in parallel to the handle shaft. The handle knob is supported by the knob shaft to be rotatable relative to the handle arm. The handle arm includes a main body and a convexo-concave portion. The main body extends substantially perpendicular to an axial direction of the handle shaft, and is formed by laminating sheets of prepreg. The convexo-concave portion is convexly or concavely formed on at least either a front surface of the main body or a back surface of the main body. The front surface allows the handle knob to be attached thereto, the back surface disposed opposite to the front surface.

The invention discloses a rectangular cross-section steel wire for a radial tire and a method for manufacturing a steel wire ring thereof. The rectangular cross-section steel wire is manufactured by adopting a round cross-section high-carbon steel wire in a roller-drawing mode and undergoes surface galvanization and tempering treatment, and m rectangular steel wires are twined side by side in n layers and are bundled by straps for forming the steel wire ring. The steel wire ring serves as a tire bead core of the radial tire and is small in cross section area; surface contact is adopted between the steel wires, and therefore the geometrical shape stability is good; the contact stress between the steel wires is small, the cross section strength between the steel wires is high, and therefore the wear resistance and the tearing resistance of a tire bead can be improved, and the manufacturing cost of the tire can be reduced.

Provided are a half steel frame reinforcing type adapting type composite pipe and a manufacture process thereof. The manufacture process includes manufacturing a frame by adopting casting or stamping process, and respectively manufacturing a socket-and-spigot main pipe and a socket-and-spigot auxiliary pipe in injection molding and spraying mode and assembling the pipes. A frame outer layer is characterized in that an outer wall of the socket-and-spigot main pipe is formed by a large conical wall on the front portion, a cylindrical wall on the back portion and a middle small conical wall, the inner wall of the socket-and-spigot main pipe is composed of a socket-and-spigot cavity and an overflow cavity, a socket-and-spigot composite pipe is composed of the adapting main pipe and the adapting auxiliary pipe in adaptive fit mode, a group of grooves are arranged on a front end opening of the frame, and a sealing ring is arranged in the grooves respectively in fit mode. The half steel frame reinforcing type adapting type composite pipe overcomes the shortcoming that a polyethylene resin plastic composite pipe / polyethylene (PE) pipe is easy to separate due to the fact that expansion coefficient is different in connection installation, non-roundness at the abutting connection position is increased, the welding position generates quick stress cracking and causes the fact that the connection system of the cracking portion leaks water, gas and liquid, a cast-iron pipe and the PE pipe cannot be interchanged, old project modification is affected and the like. The composite type and the manufacture process are suitable for connection pipes of various water delivery and gas delivery projects and are especially suitable for interchangeable connection of plastic pipes such as PE, PVC-U and PVC-M and nodular cast iron pipes.

The present application relates to a method for assembling an assembled steel structure beam-column joint, which includes the following steps: S1 prefabricating a steel structure column and a steel structure beam: opening a first connection hole on the steel structure column, and opening a second connection hole on the steel structure beam Connection hole; S2 fixed steel structure column; S3 hoisted steel structure beam; S4 pre-positioned steel structure beam: place the first connecting plate in the steel structure beam, and place the fixed plate on both sides of the steel structure column and the steel structure connection node, One end of the fixing plate is inserted into the steel structure beam and abuts with the first connecting plate, the end of the fixing plate close to the steel structure column extends to the side of the steel structure column far from the steel structure beam, and the fixing plate is provided with a third connection hole ; S5 fixed steel structure beam: the first connecting piece is inserted into the first connecting hole, the second connecting piece is inserted into the second connecting hole, and the third connecting piece is inserted into the third connecting hole. The present application has the effect of reducing the number of openings on the steel structure beam and the steel structure column, and at the same time ensuring the strength of the connection node between the steel structure beam and the steel structure column.

The invention provides a steel framework enhanced plug type composite pipe, which comprises a main framework semi-product and an auxiliary framework semi-product which are respectively manufactured through a casting or stamping process, and a socket welding main pipe semi-product and a socket welding auxiliary pipe semi-product are respectively manufactured through an injection molding process and a plastic spraying process and are connected to form the product at the end of the two frameworks. In the main framework, the socket welding main pipe outer wall is formed by a large tapered wall, a small tapered wall and a cylinder wall, an inner layer front part of the main framework is the framework body and forms the front inner wall of the socket welding main pipe, and the socket welding cavity wall and an overflow cavity wall form the socket welding main pipe rear inner wall. A front end of the main framework is an inner cone V trumpet shape, and the rear end of the main framework forms a groove and a sealing ring adapted to the groove. The steel framework enhanced plug type composite pipe overcomes the defects such as polyethylene resin composite pipes and cast iron pipes, cast steel pipes, steel pipes, PE pipes, PVC pipes, PPR pipes and plastic pipes can not be exchanged, separation is caused by thermal expansion difference during connection, non-roundness increases at a joint position, it is easy to crack during welding and water leakage, gas leakage and pollution to the environment due to the breakage connection beyond the half section length.