Hot leveler roll cassettes where backup rolls can be mounted individually and directly

Abstract

Disclosed is a hot straightener roller box with a supporting roller capable of being independently and directly installed. The roller box is used for heavy-load hot straightener in steel industry. Each supporting roller set I of an upper roller box I is directly installed on an upper base I with a groove spigot; a plurality of lower supporting bases with groove spigots are installed in the lower roller box I; the lower supporting bases fall on a lower base I freely; a plurality of supporting roller sets I are installed on each lower supporting base; a plurality of lubricating oil pipes, which are communicated with the oil inlets and outlets of the supporting rollers, are arranged between adjacent supporting roller sets in the upper roller box I and the lower roller box I. In the invention, a solid supporting roller is changed to a bearing supporting roller, which rotates flexibly and has big bearing force and low fault rate; a group formed by a plurality of supporting rollers and unitary bearing bases installed on the roller box of the supporting roller set is changed to a group formed by single supporting roller and two supporting plates, so that the supporting roller set is conveniently replaced, mounted and dismounted; the height of the supporting roller center is conveniently adjusted and compensated, so that the assembling precision of the roller box is ensured.

Description

technical field [0001] The invention relates to the technical field of iron and steel and non-ferrous metal industries, in particular to a roll box for a thermal straightening machine in which backup rolls can be separately and directly installed. Background technique [0002] The hot-rolled straightening machine is a heavy-duty metallurgical equipment used to straighten hot-rolled sheets on the hot-rolled production line. board quality. The working principle of the hot straightening machine is: when the high-temperature hot-rolled plate enters the running straightening machine, it is subjected to the force of different directions of the upper and lower straightening rollers (the canine teeth are arranged in parallel and rotates) and is repeatedly bent forward and reverse to make waves. After the shape passes through the straightening machine, due to the large amount of reduction at the entrance (that is, high pressure) and the small amount of reduction at the exit, the pla...

AI Technical Summary

Problems solved by technology

[0003] Figure 8-14 It is the representative structure of the roller box in the prior art, and it has the following problems: ①The rigidity of the upper base 25 and the lower base 26 is poor, the work is subjected to heavy straightening force, high temperature environment and long-term storage and other factors, which will cause the roll The assembly accuracy of the box is reduced, which directly affects the straightening quality of the plate; ②Each backup roller group 20 is composed of a plurality of backup rollers 21, and the bearing housing 23 shared by the plurality of backup rollers 21 is a precision part, which is limited by the space. The limitation is relatively weak in terms of size and is prone to deformation; ③ the support roller 21 is a solid structure, and the two ends are supported by tapered roller bearings 22. In actual work, the tapered roller bearings 22 are easy to be burned or broken, and multiple rollers need to be disassembled when replacing. The bearing seat 23 shared by the backup roller 2 21 is difficult to maintain; ④ The backup roller group 2 20 of the upper roller box 18 opposite to the lower roller box 2 17 is connected by the screw 3 19 from the bottom surface of the installation, and it is inconvenient to disassemble; ⑤ Assembly accuracy After the loss, adjustment and compensation cannot be obtained, and the center heights of several supporting rollers 21 in the same row have large deviations, and the straightening roller 24 and the supporting roller 21 cannot maintain good contact, and the assembly accuracy is premature due to changes in the stress state fail

Images