5 results about "Leveler" patented technology

A loading dock leveler having: a base having an inward end; a deck with a top platform, the deck having an inward end hingedly mounted to the inward end of the base for movement between an upper position and a lower position; an on-demand air compressor with an electrically powered motor, the compressor having inlet in communication with a source of ambient air and a compressed air outlet; a pneumatic deck lift actuator pivotally connected to the base and to the deck for rotary movement between a raised position and a lowered position, the lift actuator having a lift chamber, and an inlet port in direct communication with the compressor outlet through an electric powered lift valve to the lift chamber, and having a vent valve in communication with the lift chamber; and an electric user control interface having: an electric up/down switch in communication with the motor to conduct electric power to the motor and open the lift valve in an up position, and to prevent conduction of electric power to the motor and open the vent valve in a down position; wherein the compressor, motor, lift valve; vent valve and lift actuator are disposed between the base and the deck.

The invention relates to the technical field of constructional engineering, in particular to a slope sediment leveler. The slope sediment leveler comprises a frame body, a leveling shaft and a vehiclebody. The two ends of the leveling shaft are connected with the frame body correspondingly through bearings, a leveling knife is fixedly arranged on the leveling shaft, the leveling knife is a spiralblade around the leveling shaft, and a power machine is fixed to the frame body to be connected with the leveling shaft through a mechanical transmission device; one end of the frame body is fixedlyprovided with a guide rod, the guide rod is hinged to the vehicle body, and a dial indicating the rotating angle is arranged on the hinged position; and an arc-shaped plate arranged on the frame bodyis capable of fixing the frame body to the vehicle body after rotating, and a water tank arranged on the vehicle body is capable of spraying water in the leveling process. The slope sediment leveler is started to push the vehicle body, and the leveling knife which is oblique on the frame body can level out an inclined face with the specified angle. The slope sediment leveler can level out sediments on the oblique face, and the leveling effect is good.

The present invention relates to a continuous casting method for manufacturing a round billet with diameter being more than or equal to Phi 800 mm on a straight continuous casting machine, which includes the following manufacturing process: molten steel from the steel converter is poured into a ladle and rotated to the upper part of a tundish through a ladle turret, molten steel flows into a crystallizer, and covering slag on the surface of the crystallizer mainly comprises the following components by the weight percentages: 26-32 percent of SiO2, 14-18 percent of Al2O3, 24-28 percent of CaO, 16-20 percent of C and 2-4 percent of Li2O. When a billet shell at the outlet at the lower end of the crystallizer has a certain thickness, and a tension leveler and a crystallizer vibration device are turned on, the round billet with a liquid core is slowly pulled out downwards, 4-8 m length round billets are cut through a flame cutting machine, the excised round billets are horizontally positioned and pulled out, the length round billets over 600 DEG C surface temperature are hung to a slow cooling pit for slow-cooling over 24 hours, and the round billets after finishing slow cooling is hung to a shot blasting machine for shot blasting examination of the surface. The continuous casting method can compensate for the large shrinkage generated during casting and solidification and solve the stress problem generated during the cooling process.