Cold pilger mill crankshaft-dual eccentric center quality level balance method

Abstract

The invention belongs to a metallurgical equipment, in particular to a crankshaft-double eccentric quality level balance method of a cold-rolling pipe mill, which characterized in that an output shaft of a device motor (7) adopted by the method is connected with a small gear (8) and joggled with a large gear (9) of a crankshaft by the small gear (8); the large gear (9) on the crankshaft is axially connected with the crankshaft (3) to drive the crankshaft (3) to rotate; the crankshaft (3) is connected with a fan-shaped block (5) of alternative distribution on the crankshaft; the crankshaft (3) is connected with a frame (1) by a connecting rod (2) which arranged on the fan-shaped block (5) on the crankshaft; the crankshaft (3) drives the frame (1) to move reciprocating by the connecting rod (2); the large gear (9) of the crankshaft is joggled with the large gear (10) of the balance shaft which is connected with the balance shaft (4); the balance shaft (4) is connected with the fan-shaped block (6) of the balance shaft to drive the balance shaft (4) to make the same period rotation. The metallurgical equipment has the advantages of simple structure, convenient installation and maintenance and low maintenance cost.

Description

technical field [0001] The invention belongs to metallurgical equipment, and relates to a horizontal balance method adopted by an eccentric mass balance device, in particular to a horizontal balance method using a balance mechanism of a periodical cold-rolled pipe mill frame movement, specifically a cold-rolled pipe mill Crankshaft - double eccentric mass horizontal balancing method. Background technique [0002] The working stroke of the current cold-rolled pipe mill frame is mostly completed by the crank-slider mechanism in which the crankshaft rotates and drives the connecting rod to complete the reciprocating motion of the frame. The crankshaft, connecting rod and rack produce periodically changing inertial force and moment of inertia during high-speed motion, causing periodic impact on the rolling mill, which makes it difficult to greatly increase the rolling speed, and directly affects the output and quality of the final product pipe. Therefore usually always add bala...

AI Technical Summary

Problems solved by technology

The technical measures currently used are: (1) Simply add eccentric mass to the crankshaft, or directly use eccentric gears instead of the crankshaft; this method is often not ideal for balance

(2) In addition to adding eccentric mass to the crankshaft, a vertical connecting rod is used to drive another set of sliders in the vertical direction to balance; this type of equipment needs to build a deep pit, which is difficult for civil engineering. The balancing system is located underground and is expensive to repair

(3) Use one or more planetary mechanisms to balance, the balance effect is very good, but the structure is complicated and the installation is difficult

Its structure is more complex

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