Bending roll-shifting device of rolling mill
A technology for shifting rolls and rolling mills, applied in the field of rolling mills, can solve the problems of weakening the stiffness of the arch and complicated means, and achieve the effects of reducing leakage and control links, avoiding pipeline leakage, and simplifying system control.
Active Publication Date: 2013-06-05
CHINA ERZHONG GRP DEYANG HEAVY IND
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Problems solved by technology
[0004] However, the means adopted in Reference 1 to overcome the problem of unbalanced load on the work roll chocks are complicated
Moreover, since the upper roll bending hydraulic cylinder and the lower bending roll hydraulic cylinder on the same side of the roll center line are respectively fixed on the archway, when the piston in the upper bending roll hydraulic cylinder and the piston in the lower bending roll hydraulic cylinder respectively act on When there are two upper and lower bearing seats, the bending force transmitted to the archway by the cylinder body of the upper bending roll hydraulic cylinder and the bending force transmitted to the archway by the cylinder body of the lower bending roll hydraulic cylinder act on the archway respectively. Stress concentration occurs at the joints of the archway, which will eventually weaken the stiffness of the archway
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[0025] The present invention will be further described below in conjunction with the accompanying drawings.
[0026] Such as Figure 1 ~ Figure 3 As shown, the roll bending device of the rolling mill includes an upper roll 401, a lower roll 402, an upper roll operation side bearing seat 3A01, a lower roll operation side bearing seat 3A02, an upper roll drive side bearing seat 3B01, a lower roll drive side bearing seat 3B02, The operation side archway 1A and the drive side archway 1B are respectively fixedly installed on both sides of the roll center line 5 on the operation side archway 1A, which can act synchronously on the upper roll operation side bearing seat 3A01 and the lower roll operation side bearing seat 3A02 and The operation side bending hydraulic cylinder 2A that makes the two bearing housings bear up and down in the opposite direction and has the same force; on the drive side archway 1B, there are respectively fixed installations on both sides of the center line 5...
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The invention discloses a bending roll-shifting device of a rolling mill, which can effectively solve the problem of unbalance loading of a working roll bearing block. The bending roll-shifting device is characterized in that cross sections of ejection ends of each operating side bending roll hydraulic cylinder and each transmission side bending roll hydraulic cylinder are designed into prolate shapes with length directions consistent with the direction of a center line of a roll. The stress area of the roll in the direction of the center line of the roll between the ejection ends and the bearing block can be increased due to the prolate structure design of the cross section of the ejection ends, the unbalanced loading of the ejection ends acting on the bearing block is reduced, and the service life of a working roll bearing is avoided from being reduced.
Description
technical field [0001] The invention relates to a rolling mill, in particular to a roll bending and shifting device of the rolling mill. Background technique [0002] The patent application document with the publication number CN101185942A (hereinafter referred to as reference document 1) discloses a roll bending and shifting device for a rolling mill, and specifically discloses: a. On the operation side archway, two sides are fixedly installed on both sides of the roll center line respectively. The upper roll bending hydraulic cylinder on the operating side of the platform and the two lower bending hydraulic cylinders on the operating side are fixedly installed on both sides of the center line of the roll on the transmission side archway. Bending hydraulic cylinder; b. In the direction of the center line of the roll, the upper bending hydraulic cylinder on the operation side and the lower bending hydraulic cylinder on the operating side are respectively connected with the b...
Claims
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IPC IPC(8): B21B31/16B21B29/00
Inventor 崔建芳陈建平谢金良
Owner CHINA ERZHONG GRP DEYANG HEAVY IND