48results about How to "Increased flexural section modulus" patented technology

The invention discloses a reinforced riser pipe combined structure and a construction method thereof, and the reinforced riser pipe combined structure comprises an inner-layer sleeve and a riser pipe, wherein a T-like beam structure is welded on the outer surface of the inner-layer sleeve; and the inner-layer sleeve which is of the T-like beam structure is arranged at a position which is 5-10m below a mud line and 3-10m above the sea level, and an annular space part between the riser pipe and the inner-layer sleeve is poured and consolidated through cement. The T-like beam structure is welded on the outer surface of the inner-layer sleeve and simultaneously set along with the inner-layer sleeve, thereby facilitating the construction. By adopting the reinforced riser pipe combined structure and the construction method thereof, the size of the riser pipe can be reduced while the safe construction of well drilling is ensured, the use amount of steel can be greatly reduced while the same mechanical properties of the large-size riser pipe are ensured, and the engineering cost can be greatly saved on the premise of not affecting the construction period of well drilling.

The invention discloses a ball valve comprising a locking part and a positioning boss, wherein the locking part is arranged on a valve rod, and the positioning boss is arranged on the valve body; the extending part of the locking part is matched with the positioning boss so as to limit the full-open position and the full-closed position of the ball valve; the anti-bending section of the locking part is rectangular, and the height-breadth ratio h/b of the rectangle anti-bending section satisfies the condition that h/b is less than 6 and is more than 1; the ball valve has better anti-bending property. Preferably, the positioning boss is provided with a first positioning surface and a second positioning surface, the deflection angle for the locking part to extend between the first positioning surface and the second positioning surface is 180 degrees; when the extending part rotates to the middle position between two positioning surfaces, the ball valve is in the full-open position and the full-closed position; when the extending part rotates to the position on which the side end surface is abutted with the first positioning surface or the position on which the other end surface is abutted with the second positioning surface, the ball valve is in the full-open position and the full-closed position. Thus, the valve rod can rotate within the range of 180 degrees so as to greatly improve the adaptability and the maneuverability of the ball valve.

The invention relates to an embossed flattened rigidity-reinforced electrolytic electrode plate and a preparation method thereof, the electrolytic electrode plate comprises an electrode plate, an embossed groove is arranged on the surface of the electrode plate, and forms a concave convex pattern to improve the electrode plate surface strength and bending resistant ability. The embossed groove is composed of a plurality of transverse embossed grooves and oblique embossed grooves to form a structure shaped like a Chinese character mi, and raised structure composed of an upper triangular convex block and a lower triangular convex block is formed on the electrode plate. The beneficial effects of the embossed flattened rigidity-reinforced electrolytic electrode plate are that: aiming at the electrode plates of different types, reinforced stripes with different specifications and different shapes are designed, through embossing and shaping of the reinforced stripes, the electrode plate rigidity is greatly enhanced, the internal stress is eliminated, the objective of improving the electrode plate surface flatness, reducing the bending deformation, and enhancing the electrode plate bending resistant ability can be achieved, anode and cathode short circuit phenomenon in the process of electrolysis due to deformation can be avoided, the power consumption in the electrolysis or plating process can be effectively reduced, at the same time, cathode product quality is improved, the labor intensity is reduced, and production efficiency is improved.

The invention discloses a method for manufacturing novel, energy-saving and environmental-friendly bicycle pipe support components through bamboo skin coiled materials. The method comprises the following steps that firstly, moso bamboo is selected and steamed; secondly, the bamboo is flattened, pressure maintaining and rolling-in are carried out on the bamboo, and the bamboo is processed in a planing mode; thirdly, drying is carried out, and gluing and machining are carried out; fourthly, assembling and hot-pressing are carried out, and bamboo skin coils are pressed into the bamboo skin coiled materials; fifthly, the components (some components can be made of bamboo pressing sheets according to the practical application) needed by all pipe supports are made of the bamboo skin coiled materials, and component assembling is carried out. By the adoption of the technical scheme, a bicycle is better in stability, the weight of the bicycle can be reduced, and meanwhile the overall strength of the bicycle is further improved; the bicycle is firmer, so that guarantee is provided for safe use; the bicycle and the manufacturing method are economical and practical, economic benefits and social benefits are obvious, and therefore the method can be popularized and applied conveniently.

The invention relates to a hoisting system capable of implementing high hoisting of a reach truck. The hoisting system comprises a three-stage hoisting gantry, a side shifter, a front hoisting oil cylinder, two rear hoisting oil cylinders and a hydraulic pipeline system, wherein the three-stage hoisting gantry comprises an outer gantry, an intermediate gantry and an inner gantry; the width A of the outer gantry is 730 mm; the total width B of three gate posts on one side of the width direction after assembling of the three-stage hoisting gantry is 149 mm, and the total thickness C is not greater than 175 mm; the gantry structure is high in strength, can implement high hoisting of 12.5 m, is provided with the side shifter with the inclining and side shifting dual functions to implement separate inclination of the cargo while the gantry is vertical; the radial direction of a front cylinder chain wheel at the top of the front hoisting oil cylinder is inclined with the plane of the three-stage hoisting gantry; four rubber tubes at the cylinder head are crossly arranged with the front cylinder chain; the four rubber tubes are forward lapped with the front hoisting oil cylinder to form a wider space in the inner gantry above the front hoisting oil cylinder, so as to maximally enlarge the view field of a driver.

The invention provides a method for manufacturing a nano-composite tower capable of resisting strong breeze whose speed is greater than 60 m/s. The method comprises 1. preparing composite material, 2. preparing composite rods of a transmission tower, 3. preparing flange hoops, 4. assembling the composite rods and the flange hoops, and 5. sequentially connecting a plurality of composite rods provided with flange hoops to obtain a composite tower capable of resisting strong breeze, wherein flange hoops between ends of two adjacent composite rods are connected through bolts. In the method for manufacturing a nano-composite tower capable of resisting strong breeze whose speed is greater than 60 m/s, nano material and reinforcing material are added in a resin, and the content of glass fiber in composite material is controlled, the mechanical properties of the composite material can be improved, the tensile strength of the manufactured composite rod is 0.6 GPa to 1.0 GPa, and the bending strength is 1.0 GPa to 1.5 GPa. The composite tower manufactured by the method is hydrophobic, anti ultraviolet, acid and alkali resistant, and heat and cold resistant, the service life can be as long as 40 years, so the nano-composite tower can be used as a 110 KV to 220 kV power transmission tower.

The invention discloses a lower side beam structure of a side-opening container. The lower side beam structure of the side-opening container aims at being simple in structure, convenient to manufacture and high in strength and rigidity. The lower side beam structure of the side-opening container comprises I-shaped steel which is formed by welding an upper wing plate, a lower wing plate and a web plate between the upper wing plate and the lower wing plate, wherein the cross section of the I-shaped steel is in an I shape. The lower side beam structure is characterized in that a strengthening plate parallel to the web plate is welded to the outer side end between the upper wing plate and the lower wing plate; the length and the height of the strengthening plate are the same with those of the web plate; and the upper wing plate, the lower wing plate, the web and the strengthening plate are flat steel. According to the lower side beam structure of the side-opening container, due to the fact that the strengthening plate parallel to the web is added on the bases of the original I-shaped steel, the modulus of a bending resistance section of the lower side beam is effectively increased, a whole lower side beam becomes a closed frame type structure, strength and rigidity of the lower side beam are improved, and the requirement for mechanical performance for the side-opening container lower side beam bearing heavy cargoes can be met.

A plastic and stainless steel combined flag pole includes an enhanced fiber plastic inner pole and a stainless steel outer pole. The inner and outer poles are fixed together.

The invention discloses a machine base of a lightweight and high-rigidity gantry machining center. The rib is an inverted W shape, the triangular-shaped tips on both sides of the upper end of the reinforcing rib pass through the top base plate, and the top of the triangular-shaped tip of the reinforcing rib is provided with a top slide rail, and the three ends of the lower end of the reinforcing rib It is connected and fixed with the base plate on the lower side. In the present invention, the double guide rails of the base are supported by inverted W-shaped reinforcing ribs, so that the weight of the moving part workbench and the workpiece processed on the guide rails is dispersed through the reinforcing ribs, and the supporting area and range are reduced from small to small. To the maximum, the inside of the base is like multiple triangular supports, which minimizes the casting stress of the casting. At the same time, through annealing and other artificial aging methods, the residual stress of the casting is eliminated, and the stability of the machine tool is greatly improved; at the same time, the material cost is saved. At the same time increase the rigidity.

The improved CD frame comprises at three vertical stainless-steel tubular elements with horizontal connection members connected. Wherein, it arranges reinforced fiber plastic tube in every stainless steel tube connected together. This invention has simple structure, light weight, and pretty view fit to corrosion prevention.

The invention discloses a multifunctional towing winch and a towing ship with the multifunctional towing winch, which comprises a frame, a cylinder, ropes and a brake apparatus arranged on the cylinder, a motor, a speed reducing apparatus and a clutch, wherein a basement for installing tow hooks is arranged on one side of the towing winch frame near the stern, the tow hooks are arranged at the upper end of the clutch. As integrating various independent functions of equipments of the prior arts to a towing winch, the multifunctional towing winch not only saves production cost, but also resolvesthe technical problem of narrow space of the towing ship and increases the economic beneficial.

A fence element is composed by at least three connecting tubes which are made by an enhanced fiber plastic inner tube and a stainless steel outer tube fixed together. The three connecting tubes are linked in line by a thin wall stainless steel connecting parts.

The invention relates to a high-rigidity semitrailer axle body and belongs to the field of automobile axles. The high-rigidity semitrailer axle body comprises a plate spring seat assembling plane, a perpendicular plane and a lower plane, wherein the perpendicular plane is adjacent to the plate spring seat assembling plane and the lower plane is opposite to the plate spring seat assembling plane. The high-rigidity semitrailer axle body is characterized in that a specially-shaped structure is formed by combining the perpendicular plane with the lower plane. Through changes of the shape of the cross section of the axle body, the section modulus in bending of the axle body is improved, and therefore the rigidity of the axle body is improved, but the height of a whole semitrailer will not be changed along with the changes of the shape. Existing parts can serve as most connection parts needed by assembling of a suspension system and an axle. The high-rigidity semitrailer axle body is easy to machine and produce.

An improved structure of table is composed of at least three tubular members and a table top arranged on the tops of said tubular members. Each tubular member consists of a stainless steel tube and a fiber reinforced plastic tube fixed tightly in said stainless steel tube.

The invention belongs to a crossover applied to two intersecting contact wires in an electrified railway contact system, which is characterized in that aluminum alloy plates (9) are embedded at two ends of a groove-shaped crossover body (1) and riveted together by rivets (7). The crossover has light weight and large anti-bending section modulus, low possibility of bending and deformation under force and no resistance against contact wire movement, and the phenomena like pantograph scratch and pantograph drilling which influence transportation safety are avoided.

An improved hanger for hanging a bath curtain between two opposite wall in bathroom is composed of a first tubular member with a rubber pad at its one end and consisting of an external stainless steel tube and an external reinforcing plastic tube with internal spiral threads, and a second tubular member with internal spiral threads for coupling with said reinforcing plastic tube and a rubber pad at its another end.

The sunshade structure has at least one tubular member, and the tubular member comprises composite tubes, each of which consists of a stainless steel tube and a fiber reinforced plastic tube fixed inside the stainless steel tube. The present invention has simple structure, light weight, great strength, good appearance and high corrosion resistance.

A bumper of car is composed of at least curved tubular member made of the stainless steel tube reinforced by the fiber-plastic tube fixed in said stainless steel tube. Its advantages are high strength, light weight and beautiful appearance.

A tea table with composite stainless steel-plastic tubes is composed of at least three tubular members and a table top arranged on the tops of said tubular members. Each tubular member consists of a stainless steel tube and a fiber reinforced plastic tube fixed tightly in said stainless steel tube.

A TV antenna structure comprises more than one tube like components, which are connected together in a securing state. Wherein each said tube is made of stainless steel, and inside each said tube there is a fiber-reinforced plastic pipe having a diameter matching the diameter of said stainless steel tube. Said stainless steel tube and the said fiber-reinforced plastic pip are jointed together in a securing state.