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Key-connection combined vertical roll

A technology of vertical rolls and connecting parts, which is applied in the direction of rolls, metal processing equipment, metal rolling, etc., can solve the problems of large energy consumption, reduced production costs, and large assembly stress, and achieve the effect of reducing production costs

Inactive Publication Date: 2017-05-24
SINOSTEEL XINGTAI MACHINERY & MILL ROLL
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0002] The difference between the roll body and the roll neck diameter of the vertical roll for hot strip steel is large. If the overall casting gross-to-net ratio is large, the blank production cost will be high, and the production cost will be greatly reduced by using the combined nesting method. Small vertical rollers put forward higher requirements for the combined nesting method
The interference connection has a simple structure, good centering, high load-bearing capacity, can withstand impact loads, and has little weakening of the strength of the shaft, but requires high precision of matching dimensions and high machining accuracy. In many cases, the roller shaft and the roller sleeve Matching needs to be carried out. After the inner hole size of the roller sleeve is processed, the assembly outer circle of the roller shaft is processed, which increases the processing waiting time and lowers the processing efficiency. In addition, the roller sleeve needs to be heated during assembly, and the roller needs to be adjusted after hot-fitting. Insulation of sleeves, energy consumption is large, and assembly cycle is long; at the same time, the interference of interference connection is generally large, resulting in large assembly stress and high risk of bursting

Method used

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  • Key-connection combined vertical roll
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Examples

Experimental program
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Effect test

Embodiment 1

[0024] like figure 1 , 2 As shown in , 3, a key connection combination vertical roll, including a roll shaft 1 and a roll sleeve 2, the roll shaft 1 includes the roll neck at both ends and the connecting portion of the middle section, the diameter of the connecting portion is greater than the diameter of the roll neck at both ends, and the roll shaft The connecting part of the middle section of 1 and the roller sleeve 2 are interference fit, and the interference fit of the interference fit is relatively small, which is 0.05-0.15mm. The roller sleeve 2 is fitted and connected on the outer circumference of the connection part of the middle section of the roller shaft 1 through a key 3, and the key 3 is an ordinary flat key. Through the double connection of key 3 connection and interference fit, it overcomes the problems that the traditional only applicable interference connection method has a large amount of interference and high precision requirements for dimensional matching....

Embodiment 2

[0028] like figure 1 , 2 As shown in , 4 and 5, a keyed joint combination vertical roll includes a roll shaft 1 and a roll sleeve 2, the roll shaft 1 includes a roll neck at both ends and a connecting portion in the middle, and the diameter of the connecting portion is greater than the diameter of the roll neck at both ends, The connecting portion of the middle section of the roller shaft 1 and the roller sleeve 2 are interference fit, and the interference fit of the interference fit is relatively small, being 0.05-0.15mm. The roller sleeve 2 is fitted and connected to the outer circumference of the connecting part of the middle section of the roller shaft 1 through the key 3 . Through the double connection of key 3 connection and interference fit, it overcomes the problems that the traditional only applicable interference connection method has a large amount of interference and high precision requirements for dimensional matching. The problem of high production cost caused ...

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Abstract

The invention discloses a key-connection combined vertical roll and belongs to the technical field of rolls. The key-connection combined vertical roll comprises a roll shaft and a roll sleeve. The roll sleeve is connected to the outer circumference of the middle of the roll shaft through a key in a matched mode. By adoption of the key-connection combined vertical roll, the problem that the difference between the diameter of a roll body and the diameter of a roll neck of the vertical roll is large, the overall casting gross-to-net ratio is large, and consequentially the production cost is high is solved, the production cost is greatly lowered, the centring performance is good, and the bearing capacity is high.

Description

technical field [0001] The invention relates to the technical field of rolls, in particular to a combined vertical roll. Background technique [0002] The difference between the roll body and the roll neck diameter of the vertical roll for hot strip steel is large. If the overall casting gross-to-net ratio is large, the blank production cost will be high, and the production cost will be greatly reduced by using the combined inserting method. The small vertical roller puts forward higher requirements for the combined nesting method. The interference connection has a simple structure, good centering, high load-bearing capacity, can withstand impact loads, and has little weakening of the strength of the shaft, but requires high precision in matching dimensions and high machining accuracy. In many cases, the roller shaft and the roller sleeve Matching needs to be carried out. After the inner hole size of the roller sleeve is processed, the assembly outer circle of the roller sh...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B21B27/02
CPCB21B27/02
Inventor 何彦杰王庆军任晓光
Owner SINOSTEEL XINGTAI MACHINERY & MILL ROLL
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