A curved arm single-opening automatic pressurization sliding nozzle mechanism

Abstract

The invention relates to an efficient automatic pressurizing sliding nozzle mechanism achieving single crank arm opening. The mechanism comprises a fixed mold frame, a sliding mold frame and a switching mold frame. One side of the fixed mold frame is connected with the switching mold frame through a straight-face pressing rod rotary arm and a pin shaft. The sliding mold frame is mounted between the fixed mold frame and the switching mold frame. A first guide rail and a second guide rail are arranged on the opposite faces of the switching mold frame and the sliding mold frame. The sliding mold frame can slide in a reciprocating manner relative to the fixed mold frame through the first guide rail and the second guide rail. The other side of the sliding mold frame and the other side of the fixed mold frame are connected with shaft holes in the switching mold frame through crank-face pressing rod rotary arms. According to the switching mold frame, under the condition that the straight-face pressing rod rotary arm is started, the crank-face pressing rod rotary arms synchronously rotate around the shaft holes. According to the mechanism, the labor intensity is greatly lowered, an air impact wrench is used for locking in a high-temperature work environment, the requirement for the physical power of workers is high, and continuous operation is not suitable; and compared with a straight arm double-starting mechanism, only one side face arm is opened, and time is saved. Due to the fact that the guide rails suitable for sliding of the sliding mold frame are mounted on the side, close to the sliding mold frame, of the switching mold frame, the work stability of the sliding mold frame is guaranteed.

Description

technical field [0001] The invention relates to a sliding nozzle mechanism, in particular to a curved arm single-opening automatic pressurization sliding nozzle mechanism, which belongs to the technical field of metal casting. Background technique [0002] The ladle sliding nozzle is an important system to control the flow of molten steel in the ladle. If the system has a steel-piercing accident during use, it will lead to severe production accidents such as breaking the casting machine and burning out the equipment of the continuous casting machine, which restricts the stability of production. Going forward seriously threatens the safety of people and equipment. With the further acceleration of the steelmaking rhythm, higher requirements are put forward for speeding up the ladle turnover and reducing production accidents, and ensuring the safe operation of the sliding nozzle is a prerequisite. Generally, the number of times of steel leakage at the sliding nozzle of the sma...

AI Technical Summary

Problems solved by technology

Long operating time in high temperature environment, high labor intensity, low efficiency, and consumes a lot of spare parts

The domestic automatic pressurized sliding nozzle mechanism needs double opening arms to open the switch mold frame to replace the slide plate when replacing the slide plate. The operation is cumbersome and inefficient.

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