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An anti-frozen processing apparatus and method

A technology for processing equipment and processing methods, which is applied in the direction of mechanical equipment, metal processing equipment, shrinkage connections, etc., can solve problems such as corrosion, shafts cannot be inserted into bushings, and ice layer thickening, so as to reduce costs and reduce nitrogen consumption. Effect

Inactive Publication Date: 2015-09-23
LINDE AG
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Ice thickens over time, so this can create problems with "thickened" shafts not being able to fit in the bushings, especially the last few bushings side by side
Also, ice that remains in a mating position for long periods of time can introduce some quality issues, similar to corrosion
[0005] In some cases the parts can be heated to remove the ice after mating which helps a little but doesn't solve the underlying problem

Method used

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  • An anti-frozen processing apparatus and method
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  • An anti-frozen processing apparatus and method

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Embodiment Construction

[0035] see now figure 1 , figure 1 The antifreeze treatment device used in the shrink fit of the inner part and the outer part is shown. Taking the shrink fit of a shaft and its bushing as an example, the antifreeze treatment device is used to prevent the formation of an ice layer on the surface of the shaft during the shrink fit of the shaft and its bushing. In the figures, the handling device is indicated generally by reference numeral 1 and comprises a robot arm 2 and a plunger 6 .

[0036] The robot arm 2 can be used to pick up the shaft 8 (internal components) from a conveyor (not shown), immerse the shaft in liquid nitrogen in an insulated container 7 filled with liquid nitrogen at -196°C for a predetermined time, and then remove the shaft from the container 7 And place the shaft on the assembly table 5. Although in figure 2 The shaft 8 is shown to be manipulated using the robot arm 2, but any other suitable manipulation means may be used to manipulate the shaft 8. ...

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Abstract

An anti-frozen processing apparatus used in a shrink fitting process, which comprising: an operating device for picking the inner component from the conveyor, sending the inner component in a container which is full of liquid nitrogen for pre-defined time, the taking the inner component out of the container and leaving the inner component at the position on an assembly table; and conveying device for conveying the inner component into engagement with an outer component which are aligned with the inner component characterized in that, further comprising a nozzle device for blowing nitrogen to the inner component during the movement from the container to the assembly table and for continually providing the nitrogen to the inner component at least before the fitting of the inner component and the outer component takes place, so as to prevent the icy layer generation. The anti-frozen processing method is also provided.

Description

technical field [0001] The present invention relates to a deicing treatment device and a deicing method, in particular to a deicing treatment device and a deicing method for shrink-fitting inner and outer parts. Background technique [0002] Shrink fitting is a technique in which the phenomenon of thermal expansion is used to heat or cool the components of a structure to create a connection. For many typical applications, the fit is performed by an external part or press fit. Recently, a new method of liquid nitrogen shrink fitting offers a better alternative to fitting. With liquid nitrogen shrink fit, the necessary clearance is achieved by shrinking the inner part rather than expanding the outer part. This is achieved by submerging the internal components in a bath of liquid nitrogen at a temperature of -196C. After assembly, the internal components are allowed to heat up, expanding to form a tight, distortion-free interference fit. [0003] In a typical liquid nitroge...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B23P11/02
CPCB23P11/025B23P11/02B23P2700/02F16B4/006
Inventor 冯涛
Owner LINDE AG