3results about How to "Well oriented" patented technology

The application provides a prefabricated pier column assembly structure for a high pier of a bridge, which comprises a pouring pedestal, a mounting groove is arranged in the middle of the top end of the pouring pedestal, and a plurality of reinforcing ribs are arranged on the bottom of the inner cavity of the mounting groove; a pier column body is arranged in the mounting groove, a plurality of plug-in holes matched with the reinforcing ribs are arranged on the bottom of the pier column body; a connecting seat is arranged above the pouring pedestal, and a slot with the same size as the mounting groove is arranged in the middle of the top end of the connecting seat. The straight-angle trapezoidal limiting block, the ball on the inclined surface of the straight-angle trapezoidal limiting block and the rotating roller close to the side of the slot play a good guiding and friction-reducing role in the installation process of the pier column body, the pier column body is conveniently positioned in the mounting groove, the requirement for the operation technology of the crane driver is reduced, the construction efficiency is improved, and the limiting assembly can flexibly limit pier column bodies with different heights.

The utility model discloses a filter cloth production pressing mechanism which comprises a base, a pair of supporting plates are arranged on the upper wall of the base, a lower roller shaft is rotationally installed between the supporting plates, an upper roller shaft is arranged above the lower roller shaft, and pressing rollers are installed on the lower roller shaft and the upper roller shaft. The telescopic end of an electric push rod in the adjusting assembly is fixedly connected with a connecting frame of the sliding box, the vertical position of the sliding box can be accurately adjusted by controlling stretching and retracting of the electric push rod, then an upper roller shaft is driven to move vertically, the distance between the upper roller shaft and a lower roller shaft is adjusted, and use of filter cloth with different thicknesses is met; a transmission shaft in a main shaft in the driving assembly is meshed with a second transmission gear of the upper roll shaft through a second driving gear, power is transmitted to the upper roll shaft, the transmission mode ensures that the upper roll shaft and the lower roll shaft can still rotate relatively after the distance is adjusted, the stability of power transmission is ensured, the pressing effect is improved, and the production quality is ensured.

The utility model discloses a self-sealing civil defense gate valve in the field of civil defense gate valves, which comprises a valve body, a gate and a hand wheel mechanism used for driving the gate to open or close, the valve body comprises a valve casing, a front pipeline and a rear pipeline, and a channel for the gate to move is arranged in the valve casing. The front pipeline and the rear pipeline are oppositely arranged at the bottom of the valve shell and communicate with the channel, connecting flanges are arranged at the outward ends of the front pipeline and the rear pipeline correspondingly, annular bosses are arranged at the inward ends of the front pipeline and the rear pipeline correspondingly, stepped grooves are formed in the end faces of the annular bosses, and the two oppositely-arranged stepped grooves form a first sealing groove capable of containing the edge of the inserting plate. An annular groove is formed in the side, facing the inserting plate, of the annular boss, an I-shaped sealing gasket is arranged in the annular groove, the top of the inserting plate is fixedly connected with the hand wheel mechanism and detachably connected with the valve shell through a sealing seat, and a second sealing groove is formed in the position, corresponding to the sealing seat, of the top of the valve shell. The pressure-resistant shock-wave-resistant valve has good pressure-resistant capacity and shock-wave-resistant capacity.