55results about How to "No post-maintenance" patented technology

The invention discloses a vehicle window for quick escape. The upper part of the vehicle window is fixed and can be rotated, and the lower part can be opened. Under the normal condition, a clip on the lower part of the vehicle window is used to fix the vehicle window on a vehicle window frame; and under an emergency, the passenger pushes the clip outward to unlock the vehicle window and opens the vehicle window to escape.

The invention provides a wallboard for a building, which comprises at least one wallboard, wherein each wallboard is provided with a frame which is formed by upper, lower, left and right four metal section bars; an inner decorative plate is connected with one side of the frame; an outer decorative plate is connected with the other side of the frame; a heat-insulating material is filled between the inner decorative plate and the outer decorative plate; the cross sections of the four metal section bars all have the shape of irregularly shaped bulges or irregularly shaped slots; or one of the four metal section bars has the shape of irregularly shaped bulge while the other has the shape of irregularly shaped slot; when a plurality of wallboards are connected, the irregularly shaped bulges are matched with the irregularly shaped slots; an outwards raised top tray is arranged on the cross section of each of the irregularly shaped bulges, two ends of the top tray are respectively connected with the upper ends of vertical plates and all the plates form a cavity; an inwards raised top panel is arranged on the cross section of each of the irregularly shaped slots, the two ends of the top panel are respectively connected with the upper ends of a panel and all the plates form one cavity; the top panel, a first vertical panel and a second vertical panel form one slot; and the slot is located on the exterior of the cavity. The invention can solve the problem of the prior art.

The invention relates to the technical field of structural damping, in particular to an eddy current tuned mass damper for a cableway bridge, and meanwhile discloses a design method of the eddy current tuned mass damper for the cableway bridge. The eddy current tuned mass damper for the cableway bridge comprises a frame and a damping element, a plurality of guide rails are vertically arranged on the frame, the lower ends of the guide rails are fixedly connected with a bottom plate of the frame, and the upper ends of the guide rails are arranged on a top plate of the frame in a penetrating modeand connected with the top plate of the frame in a matched mode. The damping element can be assembled on the guide rails in a vertical moving mode, and a plurality of compression springs are arrangedbetween the two ends of the damping element, the top plate, and the bottom plate. Conductor plates are arranged on the upper and lower end faces of the damping element, and permanent magnet arrays are arranged on the top plate and the bottom plate. The eddy current tuned mass damper for the cableway bridge is reasonable in structure, and when the relative distance between permanent magnets and the conductor plates changes, damping force hindering relative motion is generated between the permanent magnets and the conductor plates; and energy is finally dissipated in the form of thermal energyin the conductor plates, vibration of the cableway bridge can be effectively reduced, and the advantages that damping is easy to adjust, post-maintenance is not required, the durability is good, and assembly is easy are achieved.

The invention relates to a revetment structure composed of plastic steel plate piles and concrete. The revetment structure comprises plastic steel plate piles and a concrete coping, wherein the plastic steel plate piles are connected through a connector having two mutually matched ends; the concrete coping is preformed and can be stably buckled with the upper ends of the plate piles. The revetment structure can be used for revetments of rivers or lakes, is safe and stable, high in construction speed, low in construction cost, environment-friendly and pollution-free, less in influence on the surrounding environment, and long in durability, can be further used for resisting the seepage of embankments and dike bodies of rivers and protecting dams.

The invention relates to automatic correcting error control on converter tilting angle. Included is a PLC (Programmable Logic Controller) control, a rotary encoder and a master controller. The master controller is provide with four master controller control points; a first master controller control point is arranged in an area, which forms by the converter rotating clockwise 0-30 DEG towards a direction in front of the furnace; a second master controller control point is arranged in an area, which forms by the converter rotating 30-50 DEG anticlockwise towards a direction behind the furnace; a third master controller control point is arranged in an area, which forms by the converter rotating 340-360 DEG anticlockwise towards a direction behind the furnace; and a fourth master controller control point is arranged in an area, which forms by the converter rotating 270-300 DEG clockwise from furnace back to front. According to a technical scheme of the invention, control point can be arranged easily near each master controller control point angle, and are corrected by signal level and a rotary encoder of each master controller control point to eliminate deviation, so as to ensure needs of production technology and omit subsequent maintenance after debug.