9results about How to "Reduce section size" patented technology

The application discloses a heat dissipation structure of an outdoor device and a centralized inverter integrated machine. The copper bar connected between an inverter and a transformer is connected with an internal cavity of an alternating current side of the inverter, heat generated by the copper bar is discharged to the inverter, and the heat exchanger in the inverter is used to discharge waste heat to the external environment. The heat dissipation problem of the copper bar connected between the inverter and the transformer and the connecting cavity is solved, and the cross-sectional size of the copper bar is reduced. The temperature of the copper bar connected between the inverter and the transformer and the connecting cavity is reduced, and the service life of internal devices is prolonged.

The utility model belongs to the technical field of cooling unit, concretely relates to a double -sided air -intaking circulating cooling unit for nuclear power station, including unit base and unit box, the unit box is barrel -shaped structure, and the opening side of unit box is connected with unit base buckle, and unit base is provided with the through -hole and forms the air outlet, the opposite sides wall of unit box is provided with the air inlet symmetrically, and the air inlet is covered with air -intaking treatment subassembly, the utility model discloses the design of unit box double -sided air -intaking makes filter, cooler two -sided air -intaking, can reduce the cross -sectional dimension of circulating cooling unit under the condition that total air -intaking area is invariable, thereby making circulating cooling unit can be arranged in the annular corridor of inside safety shell.

This utility model belongs to the field of photovoltaic (PV) brackets, and discloses a column structure and a PV bracket. The column structure includes a column body and a reinforcing member. The reinforcing member is disposed on at least one side of the column body and extends along the height direction of the column body. At least a portion of the cross-section perpendicular to the height direction of the column body is a closed cross-section. This utility model, by providing a closed-section reinforcing member on at least one side of the column body, improves the overall bending, torsional, shear, and tensile strength compared to open-section or flat components. It also increases the contact area with the soil, further enhancing its tensile and bending strength. Furthermore, by improving the overall performance of the column body through the reinforcing member, there is no need to increase the cross-section of the column body, saving materials.

The utility model discloses a string beam photovoltaic support structure suitable for offshore large-span integrated installation, including pile foundation, string beam structure and purline, string beam structure includes support crossbeam, upper chord beam, lower chord cable, support rod, connecting ball, support crossbeam is arranged in parallel, and pile foundation is located below support crossbeam and is fixed with support crossbeam, a plurality of upper chord beams are arched and straddle on support crossbeam, and lower chord cable is axially tensioned along upper chord beam, and a plurality of vertical support rods are arranged between upper chord beam and lower chord cable, and the upper portion of support rod is fixed with the lower portion of upper chord beam, and the lower portion is connected with lower chord cable through connecting ball, and purline is arranged above upper chord beam and is perpendicular to upper chord beam. The utility model has low production cost, compared with traditional offshore photovoltaic support structure, utilizes cable structure to replace steel truss structure, gives full play to the load bearing characteristics of material, reduces the cross section size of component, reduces the steel consumption, adopts large-span string beam photovoltaic support structure simultaneously, and reduces the pile foundation usage amount.

The invention relates to the field of arm supports, and discloses an arm joint, an arm support and engineering machinery, the arm joint comprises a plate-shaped upper-layer frame, a plate-shaped lower-layer frame and a plurality of web member structures, the arm joint is arranged to be switched between a use state and a transportation state, in the use state, the upper-layer frame and the lower-layer frame are spaced in the height direction, and in the transportation state, the upper-layer frame and the lower-layer frame are separated in the height direction. The two ends of the web member structure are connected to the upper-layer frame and the lower-layer frame correspondingly, in the transportation state, the two ends of the web member structure are separated from the upper-layer frame and the lower-layer frame correspondingly, and the upper-layer frame and the lower-layer frame are stacked in the height direction. And the sizes of the upper-layer frame and the lower-layer frame in the height direction are smaller than those of the upper-layer frame and the lower-layer frame in the use state in the height direction. According to the technical scheme, the web member structure is detachably connected with the upper-layer frame and the lower-layer frame, so that the web member structure is allowed to be detached in the transportation process, the section size of the cantilever crane is reduced, and the transportation difficulty and the transportation cost are reduced.

This invention discloses an active energy-dissipating debris flow grid dam and its construction method. The grid dam includes columns, beams, and U-shaped connectors. The columns and beams are connected by the U-shaped connectors to form a reliable and stable protection system. The U-shaped connectors consist of a U-shaped connecting pipe, two sealing plates, two push plates, two push rods, air, absorbent material, two baffles, and an air valve. The U-shaped connecting pipes connect the upper and lower beams. The beams transmit force to the other push rod and beam through compressed air via a push rod, achieving the purpose of dissipating debris flow. In this invention, the structural system itself does not consume energy, the cross-sectional dimensions of the structural components are greatly reduced, saving costs. The U-shaped connectors clearly transmit force, achieving active energy dissipation of debris flow, increasing the overall impact resistance of the structure, and ensuring structural safety and reliability.

The application discloses a large-span light-weight self-balancing glass curtain wall and relates to the technical field of building curtain walls.The large-span light-weight self-balancing glass curtain wall comprises a curtain wall body, the curtain wall body comprises a steel truss and glass panels fixedly installed on the steel truss, exquisite steel support rods, a plurality of groups of the exquisite steel support rods are distributed in a vertical direction, each group of the exquisite steel support rods comprises two exquisite steel support rods symmetrically fixed on left and right sides of the steel truss, a circular hole is formed in an end of each exquisite steel support rod away from the steel truss, and an adjusting pull rod is arranged in the circular hole, and a plurality of stainless steel pull rods are symmetrically distributed on the two sides of the steel truss.The exquisite steel support rods and the stainless steel pull rods are symmetrically arranged, the conical tensioner and the adjusting pull rod are matched, a stable self-balancing tension system is formed, horizontal external forces, such as wind loads and earthquake actions, borne by the building during service can be effectively offset, and a significant out-of-plane bending moment of the glass panel can be avoided.

The utility model relates to the technical field of clothes sorting, in particular to a steel belt type clothes conveying device which comprises a machine frame, a steel belt type conveying belt and a conveying power mechanism. The steel belt type conveying belt comprises a steel belt guide rail, a steel belt main body and a steel belt guide wheel assembly which are arranged on the rack, the steel belt main body is arranged on the steel belt guide rail through the steel belt guide wheel assembly, and a meshing transmission part matched with the driving transmission gear or the driven transmission gear and a hanging part used for hanging a clothes hanger are formed on the steel belt main body; the steel belt guide rail, the steel belt body, the steel belt guide wheel assembly and the conveying power mechanism are matched to replace a traditional chain type conveying line, the structure is simpler and more reasonable, the section size of the conveying guide rail can be reduced, the overall manufacturing cost can be reduced, turning is smoother, noise is low, and the conveying efficiency is improved. The automatic conveying device can be better suitable for automatic conveying of clothes.

This invention discloses a lightweight modular FRP lifting device and its control method. The lifting device includes an expandable lifting frame body assembled from several basic structural units. Each basic structural unit adopts a steel-FRP composite structure, with an inner layer of I-beams and an outer layer of FRP fiber-reinforced fabric. A multi-degree-of-freedom adjustment mechanism is installed at the bottom of each basic structural unit. This mechanism includes a linear module and a winch. The linear module is set and fixed along the length of the basic structural unit, and the winch is fixed below the slider of the linear module. The winch's wire rope is connected to the lifting point of the building module to be lifted. The control method uses center-of-gravity calculation and a PID algorithm for real-time feedback control. This invention effectively solves the problems of heavy weight, difficult balance adjustment, and low level of intelligence in traditional lifting devices, achieving automatic leveling and precise positioning of the lifted building module, significantly improving lifting efficiency and safety.