53results about How to "Reduce design thickness" patented technology

The invention discloses a steel-ultra-high performance concrete combined bridge deck structure with a shearing resisting structure and a construction method thereof. The structure comprises a steel bridge deck layer and an ultra-high performance concrete layer, wherein a shearing-resisting reinforcing mesh structure is fixedly connected with the steel bridge deck layer; and the shearing-resisting reinforcing mesh structure is embedded in the ultra-high performance concrete layer. The construction method comprises the following steps of: firstly, erecting a steel beam so as to obtain the steel bridge deck layer; secondly, constructing and welding a reinforcing mesh, wherein the reinforcing mesh can adopt the mode that a lower longitudinal rib distributed layer is combined with an upper transverse rib distributed layer, or a mode that a lower transverse spacing rib distributed layer, a longitudinal rib distributed layer and the upper transverse rib distributed layer are combined, and longitudinal reinforcing ribs and transverse reinforcing ribs can be arranged among shearing-resisting longitudinal ribs and shearing-resisting transverse ribs; subsequently casting the ultra-high performance concrete layer so as to embed the shearing-resisting reinforcing mesh structure into the ultra-high performance concrete layer; and finally paving a wearing layer so as to accomplish the construction. The steel-ultra-high performance concrete combined bridge deck structure has the advantages of being small in building height, large in partial rigid, reliable in shearing-resisting connection between combined layers, good in fatigue resistance, convenient to construct and the like.

The invention discloses a large-scale liquid-cooled pipe network and a welding method thereof, belonging to the technical field of large-scale liquid-cooled pipe network welding, including a liquid-cooled shell and a stepped cover plate, and the stepped cover plate includes a welded stepped cover plate and a reinforced stepped cover The reinforced stepped cover plate includes a plurality of steps corresponding to the pipelines at various levels, and each step is integrally formed with the welded stepped cover plate. In the present invention, the cover plate is designed as a stepped cover plate, and a design model based on bearing capacity is established. On the premise of ensuring that the pressure bearing capacity of the cover plate does not decrease, the thickness of the cover plate required for welding is greatly reduced, so that the welding process can be used Smaller stirring tools greatly reduce welding heat input and welding deformation; the welding thickness of the designed stepped cover plate is greatly reduced, which causes changes in the physical space design on both sides of the weld, because the width of one side of the weld is equal to the welding thickness, so the weld The physical space on both sides of the seam is greatly reduced, which improves the integration of large liquid cooling pipe networks and reduces the weight of the system.

The invention discloses the technical field of rail transit facilities, and in particular relates to a rail transit evacuation platform that can resist high wind pressure. The rail transit evacuation platform includes a support pier and a platform plate installed on the support pier. It is a concrete composite material, the platform slab includes a standard block and an adjustment block, and the standard block and the adjustment block are spliced ​​to form a platform slab, and both the standard block and the adjustment block are connected to the pier through a wind pressure resistant bolt assembly The detachable connection, the evacuation platform is made of concrete composite material, which reduces the workload of maintenance, maintenance and replacement in the later operation process, and reduces the maintenance cost. In the technology, the heavy weight of the monolithic platform slab leads to the difficulty of installation. Both the standard block and the adjustment block are detachably connected to the pier through wind-resistant bolt components, which solves the problem that cannot be solved in the prior art. Solve or only rely on increasing the thickness of the platform slab to resist high wind pressure, which will increase the load of the pier and affect the bearing performance.

The invention discloses a reinforcing rib for the lower casing of the battery pack, a battery pack and a vehicle. The reinforcing rib is suitable for being fixed on the lower casing body of the lower casing of the battery pack. The reinforcing rib includes a top wall and a first side wall. and the second side wall, the first side wall and the second side wall extend downwards from the two side edges of the top wall respectively, the lower end of the first side wall and the lower end of the second side wall are respectively provided with a first side wall flanging and a The second side wall flanging, the first side wall flanging and the second side wall flanging respectively extend in a direction away from each other, and a filling space is defined between the first side wall, the second side wall and the top wall, and the filling space Filled with thermosetting resin. According to the reinforcing rib of the embodiment of the present invention, the design thickness of the lower case of the battery pack can be reduced while ensuring high strength of the lower case of the battery pack, thereby reducing the weight of the battery pack and further reducing the weight of the entire vehicle.

The present invention proposes a voice coil motor, including a base, a casing, a lower elastic piece, a lens holder, a coil, a magnet, an upper elastic piece, an upper cover pressing plate and pins, the lower elastic piece, the lens holder, the coil, and the magnet , the upper elastic piece and the upper cover pressing plate are sequentially arranged between the base and the shell, the stitches are arranged on the base, the lens holder and the coil are integrally formed, and the coil is wound around on the outer side of the lens holder. The invention also proposes a manufacturing method of the voice coil motor.

The invention relates to a hydrogen fluoride heater. The technical proposal is as follows: a sealing end of an inner cylinder is connected with a cylinder body of the inner cylinder, the cylinder body of the inner cylinder is connected with a flat cover, a fixed stiffened plate is arranged in the sealing end of the inner cylinder, a condensate outlet pipe is extended out of the inner cylinder, a steam inlet is arranged on the flat cover, and a supporting stiffened plate, a strengthening stiffened plate and a grid are arranged out of the cylinder body of the inner cylinder; the sealing end of a container is connected with the cylinder body of the container, the cylinder body of the container is connected by a flange, and the cylinder body of the container is connected with an annular plate; the sealing end is provided with a hydrofluoric acid outlet, and the cylinder body of the container is provided with a temperature measuring port, a hand hole, a liquid inlet and a hydrogen fluoride gas outlet; the inner cylinder and the container are connected with the supporting stiffened plate by the annular plate; the supporting stiffened plate is arranged in the cylinder body of the container, a packing supporting ring is arranged on the supporting stiffened plate, a packing Raschig ring is filled between the cylinder body of the container and the cylinder body of the inner cylinder on the packing supporting ring, and a distributor is arranged on the inner wall of the cylinder body of the container; the sealing end of a jacket is connected with the cylinder body of the jacket, the cylinder body of the jacket is connected with the cylinder of the container, and the steam inlet and a steam outlet are arranged on the cylinder body of the jacket. The hydrogen fluoride heater has low cost and good heat exchange effect.

The invention relates to a composite pipe concrete composite structure which is characterized in that the structure comprises internal concrete (1), a steel pipe (2), transverse pre-stressed steel wires (3), and a fiber-reinforced plastic material (4). According to the invention, through applying pre-stress to the steel wires, the pre-stressed steel wires (3) are transversally continuously and uniformly wound on the outer wall of the steel pipe (2). The fiber-reinforced plastic material (4) is adhered to the outer surface of the transverse pre-stressed steel wires (3) on the outer layer. The internal concrete (1) is filled in the steel pipe (2). The winding pitches between the transverse pre-stressed steel wires (3) are no larger than 40mm. With the structure provided by the invention, defects of commonly known steel pipe concrete and FRP-steel composite pipe concrete structures are overcome, and advantages such as high yield load, large bearing capacity storage, good ductility, moderate failure mode, good durability, and the like are provided. Especially, the structure has stable and continuous decline stage and low cost. The structure provide by the invention is suitable to be used in piles, columns, bridge piers, and arch ribs in newly built structures, and can be used in reinforcement of mainly compressed members in existing reinforced concrete structures and steel pipe concrete structures.

The invention discloses a prestress anchor cable buttress-type parapet suitable for a rock substrate, comprising a parapet base, a parapet panel and a buttress plate, wherein the parapet panel and the buttress plate are arranged on the parapet base; the buttress plate is arranged on the inner side of the parapet panel; an inclined duct is arranged in the buttress plate; the steel strand of the prestress anchor cable passes through a PVC (Polyvinyl Chloride) pipe in the inclined duct; an included angle between the inclined duct and a horizontal plane is 15-45 degrees; one end of the steel strand is connected with the anchor head of the prestress anchor cable on the outer side of the parapet panel; the anchor head is fixed on the outer side of the parapet panel by an anchor head mad pillar; and the other end of an anchor cable steel strand extends into a rock foundation drilling hole below the rear side of a parapet heel slab. In the prestress anchor cable buttress-type parapet, the prestress anchor cable is effectively combined with the buttress-type parapet, and the prestress anchor cable built in the buttress plate can be used for increasing the strength of the buttress plate. In addition, the parapet base, the parapet panel, the parapet plate and the rock substrate are tightly combined, and the limit skidding resistance force and topple resistance performance of the buttress-type parapet are improved.