An automatic hanging tool for a vertical vacuum furnace

Abstract

The invention provides an automatic hoisting tool for a vertical vacuum furnace. The lower end of a hoisting hook body is located in a center hole of a hoisting disc. An operating handle is placed among four stand columns at the middle of the hoisting hook body, and a pair of limiting rods of the operating handle is made to be parallel to the four stand columns. A counterweight plate of a control bolt is located between the pair of limiting rods below a horizontal plate on the operating handle, and the counterweight plate of the control bolt intersects with the horizontal plate of the operating handle in a spatial cross-shaped manner. Two lifting claws are located above a lifting pull rod at the lower end of the operating handle, and the directions of the two lifting claws are opposite. According to the automatic hoisting tool for the vertical vacuum furnace, automatic installing clamping and separating of the hoisting hook body and the hoisting disc are achieved, and automatic hoisting and disassembling of a product and the tool are achieved. By means of multiple times of high-temperature tests, the tool is normally used at high temperature, key dimensions and appearance are free of obvious changes, and the hoisting and separating processes are conducted smoothly. The automatic hoisting tool is applied to the vacuum furnace, the multi-time vacuumizing problem caused by opening and closing a furnace door is effectively avoided, and the practical operation time is shortened by half.

Description

technical field [0001] The invention relates to a hanging tool which can realize automatic clamping and detachment from workpieces in a vertical vacuum furnace. Background technique [0002] The vacuum heat treatment environment has certain requirements on the degree of vacuum. The product is subjected to heat treatment processes such as quenching and tempering under a certain degree of vacuum, which avoids oxidation, decarburization, and hydrogen embrittlement of ordinary heat treatment, and can improve the comprehensive mechanical properties of the product. The vertical vacuum furnace can be used for vacuum heat treatment of slender workpieces. The workpieces need to be hoisted and unloaded before and after the heat treatment process. The current vacuum heat treatment slings often require manual work when hoisting and unloading workpieces, resulting in the lifting or unloading of workpieces. The process needs to be carried out outside the furnace. Frequent opening and clo...

AI Technical Summary

Problems solved by technology

The vertical vacuum furnace can be used for vacuum heat treatment of slender workpieces. The workpieces need to be hoisted and unloaded before and after the heat treatment process. The current vacuum heat treatment slings often require manual work when hoisting and unloading workpieces, resulting in the lifting or unloading of workpieces. The process needs to be carried out outside the furnace

Frequent opening and closing of the furnace door leads to constant changes in vacuum, which is not conducive to ensuring product quality and reducing energy consumption

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