Short-stress-path rolling mill and elimination method for threaded clearance of short-stress-path rolling mill

A technology of short stress lines and thread gaps, applied in metal rolling stands, metal rolling mill stands, metal rolling, etc., can solve the problems of eliminating the effect of gaps, affecting rolling precision of rolling mills, troublesome installation and replacement, etc. , to prolong the service life, improve the elimination effect, and solve the effect of fatigue failure

Inactive Publication Date: 2017-09-08
马鞍山市银鼎机械制造股份有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] However, due to the relatively poor stability of the existing gap elimination device for rolling mills, and it is prone to uneven force, the effect of eliminating gaps is affected, which in turn affects the rolling accuracy of the rolling mill. device, the disc spring is prone to fatigue failure after long-term use, and its service life is relatively short. Since each disc spring group is usually composed of multiple disc springs, it is very troublesome to install and replace the existing mechanism in actual use.

Method used

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  • Short-stress-path rolling mill and elimination method for threaded clearance of short-stress-path rolling mill
  • Short-stress-path rolling mill and elimination method for threaded clearance of short-stress-path rolling mill
  • Short-stress-path rolling mill and elimination method for threaded clearance of short-stress-path rolling mill

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Embodiment 1

[0044] Such as figure 1 , image 3 As shown, a short stress line rolling mill in this embodiment includes a frame 13, a tie rod assembly 11, a roll assembly 12, a guide beam assembly 14 and a roll gap adjustment device 9, wherein the frame 13 is fixed on the mobile base, the pull rod assembly 11 is fixed on the frame 13 through the guide sleeve 23, and the bearing housing 18 of the roller assembly 12 is connected to the symmetrically arranged pull rods 22. The upper and lower roll chocks 18 of the roll assembly 12 are all processed with assembly holes for the passage of the pull rod 22, and the copper nut 20 and the auxiliary nut 21 threaded with the pull rod 22 are installed in the assembly hole, and the copper nut 20 is connected with the pull rod 22. The auxiliary nut 21 is fixedly connected by a pin; the pull rod 22 is also provided with an end cover 5, the end cover 5 is fixedly connected with the bearing seat 18, and a balance device for eliminating thread gap is instal...

Embodiment 3

[0059] to combine Figure 1-Figure 3 , a short stress line rolling mill of this embodiment, its structure is basically the same as that of Embodiment 2, the difference is that a spherical pad 19 is provided between the copper nut 20 and the bearing seat 18 . The roll gap adjusting device 9 of the present embodiment comprises a hydraulic motor 10, a worm 8, a worm wheel 15, a gear shaft I 16 and a gear shaft II 17, wherein the worm 8 is meshed with the worm wheel 15, and the worm 8 is driven by the hydraulic motor 10 Connected, the gear shaft I16 is installed on the worm wheel 15, the gear shaft I16 and the gear shaft II17 are connected through matching gear transmission, and the gear shaft II17 and the pull rod 22 are connected by a key. The hydraulic motor 10 is used as power to drive the worm 8 to rotate, and the worm 8 drives the worm gear 15 to rotate, and the worm gear 15 drives the gear shaft II 17 to rotate through the gear shaft I 16 and the mating gear. The inner hol...

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Abstract

The invention discloses a short stress line rolling mill and a method for eliminating thread gaps thereof, belonging to the technical field of steel rolling systems in the metallurgical industry. The short stress line rolling mill of the present invention comprises a frame, a pull rod assembly, a roll train assembly, a guide beam assembly, and a roll gap adjustment device. A balance device for eliminating thread gaps is installed in the pull rod assembly, and the balance device includes a cage, a nut, A disc spring, a support member and a retaining sleeve. The two ends of the support member are respectively equipped with retaining sleeves and nuts. The disc spring is set on the surface of the supporting member and is limited by the retaining sleeve and the nut to form a balance assembly. The above-mentioned balance assembly is installed in the cage, and is installed in the tie rod assembly through the cage. The present invention installs a gap elimination balance device in the assembly of the pull rods of the rolling mill, and optimizes the structure of the balance device so that it can be installed in the form of components, thereby effectively improving the effect of eliminating thread gaps in the rolling mill, thereby ensuring that the rolling mill rolling precision.

Description

technical field [0001] The invention belongs to the technical field of steel rolling systems in the metallurgical industry, and more specifically relates to a short stress line rolling mill and a method for eliminating thread gaps thereof. Background technique [0002] Rolling mills are usually used in the steel rolling process. Among them, short stress line rolling mills are widely used in hot-rolled long product production lines because of their high rigidity and quick replacement. Invention of the rolling mill. The short stress line rolling mill core is generally composed of four parts: roll gap adjustment device, tie rod assembly, roll assembly and guide beam assembly. [0003] Among them, the pull rod assembly uses four tension rods to connect the bearing seat, pressing device, seal, support, balance device, etc. into one body to form a radial main body. The pull rod mainly adjusts the upper and lower roll gaps through the threaded transmission mechanism. The specific...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B21B28/00B21B31/24
CPCB21B28/00B21B31/24
Inventor 夏明星
Owner 马鞍山市银鼎机械制造股份有限公司
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