CN1073477C

CN1073477C - Space self-alignment type high-rigidity rolling mill

Info

Publication number: CN1073477C
Application number: CN97101305A
Authority: CN
Inventors: 申光宪; 黄孟魁; 束学道; 叶海潮; 肖宏; 陈占福; 黄庆学; 鄂长林
Original assignee: SOUTH BRANCH OF DONGBEI HEAVY MACHINERY COLLEGE
Current assignee: SOUTH BRANCH OF DONGBEI HEAVY MACHINERY COLLEGE
Priority date: 1997-01-06
Filing date: 1997-01-06
Publication date: 2001-10-24
Anticipated expiration: 2017-01-06
Also published as: CN1187393A

Abstract

The present invention relates to a space self-alignment type high-rigidity rolling mill of which a bearing seat of an upper roller and a lower roller are installed on an upright post 5 provided with right screw threads and left screw threads through a convex spherical gear pad 4, wherein the convex spherical gear pad is engaged with an adjustable internal gear block in a borehole of the bearing seat to form a single-freedom lever system using the bearing seat of the rollers as an active unit, so that under the condition of simultaneously bearing the rolling force and the horizontal force, the rolling mill has good and reliable performances of space self-alignment and high rigidity in the axial direction. Ensuring the designed service life of a bearing of the rolling mill, the present invention has the advantages of raised dimensional precision of rolled products and raised rate of negative allowance, so that the obvious economic effect can be obtained.

Description

Space self-alignment type high-rigidity rolling mill

The invention belongs to shaped steel and wire tandem rolling and multiple double Rolling Production stiff mill.

In recent years along with the development of precision rolling production technology, red circle formula " POMINI news-30; January; 1993 " at home and abroad appears in succession, chuck mode " DANIELI message-No. 108; 1988-11 ", three-hinged tension rod square column type type " Shen Guangxian etc.; patent No. ZL9110932.7 ", GY type " Zhong Tingzhen etc.; the characteristics of GY-1 type short stress path rolling mill and the initial analysis of relevant mechanical property; Beijing College of Iron and Steel Technology's journal; No.2; 1983.6 " and SY type stiff mills such as " Li Jian; SY type stiff mill and the application in steel rolling technology is transformed thereof, iron and steel, international steel rolling meeting special edition in 1989 ", in some factories of the shaped steel of iron and steel enterprise and wire rod, be applied and promote, be subjected to the attention and the favorable comment of industry circle.

The roll bearing of above-mentioned stiff mill all adopts four row short cylindrical roller shaft to hold.Under stationary state, guarantee that four row short cylindrical roller shaft holds the characteristic that every row all carry and is defined as milling train self-alignment performance at mill load and roll mandrel.GY type and SY type stiff mill do not have the self-alignment performance.The self-alignment ability that red circle formula, chuck mode and three-hinged tension rod square column type type stiff mill only have the roll-force action direction is a plane self-alignment performance, thereby is not suitable on bigger double duo mill of horizontal force and the tandem mill (horizontal mill or level-vertical mill).

The objective of the invention is the space self-alignment type high-rigidity rolling mill that is applicable to double duo mill and tandem mill in order to provide.According to the stiff mill with space self-aligning mechanism of heavy mechanism leverage feature and elastic theory design, guarantee space self-aligning (roll-force and the horizontal force direction) performance of roll chock and the projected life of roll bearing.The axial string momentum of roll is controlled in the play of thrust bearing, improves the precision and the negative common difference rate of rolled product.

Space self-alignment type high-rigidity rolling mill is made up of parts such as roll, bearing, bearing block, the radial and axial regulating system of roll, base, universal-joint spindle, transmission system and motors.Its main points are: the bearing block 2 of upper and lower two rolls is assemblied on the column 5 that has the right side, left-hand thread by protruding Hindley worm gear pad 4 and nut 3, internal gear piece 6 in protruding Hindley worm gear pad and the bearing block bore hole is meshed, and becoming with the roll chock is two hinges one sliding secondary mechanisms of driving link.When roll bears roll-force and horizontal force occasion simultaneously, bearing block is the inclination respective angles with roll flexural deformation, and each row of multiple row roller bearing are all carried.When roll unloaded, bearing block is reposition with the elastic recovery of roll.The relative bearing block of internal gear piece can be adjusted by pressing plate and screw, with the meshing backlass of elimination with protruding Hindley worm gear pad.The transmission point of roll axial force is positioned on the roll axis, to eliminate the additional moment that two fulcrums cause, has improved the milling train axial rigidity.

Drawings and Examples:

Fig. 1 is the space self-alignment type high-rigidity rolling mill sketch

Fig. 2 is the A-A cutaway view of space self-alignment type high-rigidity rolling mill

Fig. 3 is mechanism's leverage for the roller of space self-alignment type high-rigidity rolling mill

Fig. 1 is an embodiment disclosed by the invention.In Fig. 1, Fig. 2,1-roll, 2-bearing block, 3-nut, the protruding Hindley worm gear pad of 4-, 5-column, 6-internal gear piece.As long as the roller gap regulating system of change GY type, SY type and three-hinged tension rod square column type type stiff mill and tripod or square column attachment system and the individual part of changing the roller gap regulating system of red circle formula and chuck mode stiff mill just are transformed into space self-alignment type high-rigidity rolling mill with above-mentioned stiff mill.The roll of above-mentioned stiff mill, bearing, bearing block, roller gap regulating system, roll mandrel continue to continue to employ to regulating system, universal-joint spindle, base, transmission system and motor.Therefore, technology of the present invention is used to transform existing all kinds of stiff mill, can improves the product precision and save a large amount of scrap build expenses, have important techniques and economic worth.

Claims

1. space self-alignment type high-rigidity rolling mill, by roller is that device, base, universal coupling, transmission system and motor are formed, and it is characterized in that: be assemblied in the bearing block (2) of upper and lower two rolls on the column (5) that has the right side, left-hand thread by protruding Hindley worm gear pad (4) and nut (3); Internal gear piece (6) in protruding Hindley worm gear pad and the bearing block bore hole is meshed, and becoming with the roll chock is two hinges one sliding secondary mechanisms of driving link.

2. stiff mill according to claim 1 is characterized in that: internal gear piece (6) can be adjusted by pressing plate and screw, with the meshing backlass of elimination with protruding Hindley worm gear pad; The transmission point of roll axial force is positioned on the roll axis, improves axial rigidity.