36results about How to "Reduce lashing" patented technology

The invention relates to a corrugated steel plate aseismic shear wall which comprises two corrugated steel plates, wherein the two corrugated steel plates are oppositely arranged, the corrugation difference of 180 degrees is realized, a plurality of protrudent steel members are distributed on the inner sides of the two corrugated steel plates, the two corrugated steel plates are connected together by pouring concrete, and the edges of the two corrugated steel plates are connected with an edge framework. The corrugated steel plate aseismic shear wall is high in bearing performance, strong in energy dissipation capacity and convenient to construct.

A differential assembly includes a differential housing including a substantially spherically shaped chamber. A pair of spherically shaped side gears are rotatably positioned in the chamber in driving communication with a pair of spherically shaped pinion gears. A pair of springs are positioned in engagement with the end faces of the side gears to minimize gear lash between the side gears and the pinion gears.

A vehicle power steering assembly comprises a steering member having a screw portion. The screw portion has an external screw thread convolution with a first lead spacing. A ball nut is operatively connected to the screw portion. A bushing is operatively connected to the screw portion. The bushing has a bushing screw thread convolution with a second lead spacing. The second lead spacing is different than the first lead spacing. The bushing biases the ball nut against the screw portion.

The invention discloses a duplex channel steel and recycled concrete combination beam, comprising first channel steel and second channel steel riveted to the first channel steel. Shear-resistant connectors are disposed at the bottom of the first channel steel. The first channel steel is filled with recycled aggregate concrete. The second channel steel is fixedly connected through rivets. The thickness of a web of the second channel steel is greater than that of a web of the first channel steel. A replacement rate of recycled aggregate in the recycled aggregate concrete is 50%. In the combination beam, the lower channel steel is provided for bearing tension, the concrete in the upper channel steel is provided for bearing pressure, respective performances of the upper and lower channel steel can be given to full play, and bending resistance of the combination beam is higher; under same performances, the combination beam is lighter in weight and the seismic capacity is favorably improved; braces and form boards for use in a construction phase can be reduced, and construction is greatly facilitated; the lower channel steel gives full play to the tensile strength, the building structure is simplified, fewer rebars are tied, and construction efficiency is improved.

The invention discloses a duplex channel steel and recycled concrete combination beam, comprising first channel steel and second channel steel riveted to the first channel steel. Shear-resistant connectors are disposed at the bottom of the first channel steel. The first channel steel is filled with recycled aggregate concrete. The second channel steel is fixedly connected through rivets. The thickness of a web of the second channel steel is greater than that of a web of the first channel steel. A replacement rate of recycled aggregate in the recycled aggregate concrete is 50%. In the combination beam, the lower channel steel is provided for bearing tension, the concrete in the upper channel steel is provided for bearing pressure, respective performances of the upper and lower channel steel can be given to full play, and bending resistance of the combination beam is higher; under same performances, the combination beam is lighter in weight and the seismic capacity is favorably improved; braces and form boards for use in a construction phase can be reduced, and construction is greatly facilitated; the lower channel steel gives full play to the tensile strength, the building structure is simplified, fewer rebars are tied, and construction efficiency is improved.

A selector apparatus comprises a shift lever operably supported on a base for movement between gear positions, and a feel positioner mechanism with offset detent members, where a first detent engages first undulations for biasing the shift lever toward a center of a selected gear position from a first direction, and a second detent engages second undulations for biasing the selector lever toward the center of the selected gear position from a different second direction to the common center point. By the arrangement, the first and second undulations define opposing angled slopes toward the common center point. This allows the undulations to be designed to provide any desired level of biasing force toward the center point without the limitations of a single undulation defining the center point.

The invention is a novel double steel pipe concrete anti-seismic column with built-in rubber compound. Including circle in circle, square in square, circle in square, square in circle, and rectangle in rectangular cross-section, it is composed of outer steel pipe, inner steel pipe, interlayer concrete and rubber mixture. The concrete is placed between the double steel pipes, the rubber compound is filled in the inner steel pipes, and the sandwich concrete is self-compacting concrete. The rubber compound is located inside the inner steel pipe, which has a good energy dissipation and shock absorption effect, can effectively absorb earthquake energy, and can also effectively prevent fires; the double steel pipe concrete anti-seismic column with built-in rubber compound has a relatively low self-weight. The invention is the main component of the frame structure in high-rise and long-span buildings, and has the characteristics of high bearing capacity, light weight, good plasticity and toughness, good impact resistance and fatigue resistance, good earthquake resistance, good durability and the like.

The open-cut underground building structure assembly construction method of the present invention does not need to erect a temporary support system, and the temporary support system in the existing construction method is replaced by each floor plate in the permanent structure station, including the top plate, the floor plate and the bottom plate, Eliminate support removal, save a lot of waste of temporary materials, avoid structural instability caused by the change of structural force system caused by support removal and replacement, change the longitudinal beam system of the existing station structure to vertical and horizontal integrated force, and the structure is completed at one time , simple and clear, safe and reliable.

The invention discloses a ductile composite bridge deck composed of cold-formed Z-shaped steel, which comprises cold-formed and curled Z-shaped steel, transverse steel bars and ultra-high toughness concrete. The cold-formed Z-shaped steel is continuously placed laterally along the bridge deck and welded by fillet welds to form the steel skeleton of the bridge deck. The lower flange of the cold-formed Z-shaped steel is longer, which plays the role of external reinforcement of the plate surface; the upper flange is shorter and has a row of round holes on it, and the transverse steel bars pass through each cold-formed Z-shaped steel flange through the round holes. The ultra-high toughness concrete is poured on the steel skeleton of the bridge deck to protect the steel skeleton of the bridge deck. In the composite bridge deck system proposed by the present invention, the ultra-high toughness concrete can ensure that no or only tiny cracks below 100 microns will be generated, and the toughness and durability of the structure will be improved; The anti-shear and pull-out effects of the studs are improved, and the out-of-plane stability of the bridge deck is improved, the material cost and construction complexity are significantly reduced, and the fatigue performance is superior.

Disclosed are an assembly-type mixed coupled wall system and a construction method thereof. The assembly-type mixed coupled wall system comprises wall units which are connected in the horizontal direction and the vertical direction respectively, a floor slab is arranged between the wall units connected in the vertical direction, the left wall unit and the right wall unit in the horizontal direction are connected through an energy-dissipating beam, anti-shear studs are fixed onto the energy-dissipating beam, the two ends of the energy-dissipating beam are fixedly connected with non-energy-dissipating short beams of the two wall units respectively, the upper wall unit and the lower wall unit in the vertical direction are correspondingly and fixedly connected through steel columns and a steel bar framework, and the steel columns between the upper wall unit and the lower wall unit are fixed in a butt-joint mode and poured in the floor slab. The construction method of the assembly-type mixed coupled wall system is simpler, faster and more efficient and comprises the procedures of prefabrication and on-site assembly, the two procedures can be conducted at the same time, the concrete on-site wet construction quantity is reduced, the construction speed is increased, generation of construction waste is reduced and the construction method can be applied to construction of coupled walls in constructional engineering.

The invention belongs to the nuclear power technique of high temperature gas cooled reactors, and particularly relates to a nuclear power station steam generator cabin module for a high temperature gas cooled reactor. The nuclear power station steam generator cabin module comprises a wall structure, a bottom structure, a shielding cooling water system, an evaporator supporting embedded part and a penetrating part which is installed on the wall structure in a penetrating mode. The wall structure comprises an outer wall body and an inner wall body. The inner wall of the outer wall body and the inner wall of the inner wall body are provided with pieces of supporting angel steel. A shielding cooling water pipe is arranged on the inner wall body. Shearing resistance pins are longitudinally and transversely fixed to the inner walls. A plurality of parallel supporting cross beams are arranged between the inner wall body and the inner wall body in the direction which is perpendicular to the pieces of supporting angel steel. The wall structure is composed of the outer wall body and the inner wall body and made of Q345-C steel plates, and meanwhile, the amount of tied steel arranged between the inner wall body and the outer wall body is effectively decreased through the steel structure which is composed of the pieces of supporting angel steel, the shearing resistance pins and the supporting cross beams; accordingly, the cost is reduced, and more importantly, the stability is good. The supporting embedded part is of a box body structure, internally provided with rib plates and independently and integrally machined, cross construction between the supporting embedded part and a water pipe rebar is avoided, the construction difficulty is reduced, and the construction precision is improved.

The invention relates to a solderless assembly type steel pipe concrete beam column node, which comprises a steel pipe concrete column, wherein an annular sleeve is arranged outside the steel pipe concrete column; a plurality of reinforced concrete beams are annularly arranged at the circumferential side of the annular sleeve. The invention also relates to a construction method of the solderless assembly type steel pipe concrete beam column node. The solderless assembly type steel pipe concrete beam column node and the construction method have the advantages that the structure design is simple, compact and reasonable; all mechanical properties of the node are met; the structure assembly is realized; the assembling speed of components is accelerated; the requirements and the characteristics of an assembly type system are fully met.