Automatic production type heat treatment pit furnace and accessory device

Abstract

An automatic production type heat treatment pit furnace comprises a pit furnace lid automatic lifting and rotating device, a pit furnace lifting material disk movable shield locking device, a program control crane automatic hanging device and a crane advancing accurate braking device. The pit furnace lid automatic lifting and rotating device enables a furnace lid to automatically ascend and rotate and enables a lid lock to be automatically released, when the furnace lid returns to the original position, the lid lock is made to be automatically locked, and therefore the furnace lid is accurately covered. The pit furnace lifting material disk movable shield locking device effectively eliminates shake generated when a steel wire rope lifting disk walks, and a shield can prevent cooling and oxidation. According to the program control crane automatic hanging device, when a lifting hook is locked in one direction, the lifting hook is made to be automatically hung on a lifting ring, automatic unhooking can also be achieved, unsafe factors existing during manual hanging are eliminated, the hanging speed is improved, and workers are prevented from being roasted by high-temperature furnace fire. A chain accurately brakes in the advancing process of a crane, and errors caused by the inertia of the crane are avoided. The automatic production type heat treatment pit furnace saves labor, material resources and financial resources and improves the product quality and the production efficiency.

Description

technical field [0001] The invention relates to the technical field of heat treatment, in particular to the automatic production of a well-type furnace for heat treatment and a supporting device. Background technique [0002] Well-type furnaces are still widely used due to their good sealing, large capacity, small space occupation, simple manufacture, and small workpiece deformation. But so far, the structure of the well-type furnace is still the same, and it only stays in manual operation, and has not been able to realize automatic production. It mainly includes: The furnace cover of the pit type furnace can only be raised by pressing the button but cannot be turned and opened automatically. Every time the furnace cover is turned, it must be pulled vigorously with a long furnace hook; To cover it, because the fire sprayed from the furnace mouth is afraid to approach, it is often difficult to find the position and it is difficult to cover it. It has to be switched on and o...

AI Technical Summary

Problems solved by technology

But so far, the structure of the well-type furnace is still the same, and it only stays in manual operation, and has not been able to realize automatic production. It mainly includes: The furnace cover of the pit type furnace can only be raised by pressing the button but cannot be turned and opened automatically. Every time the furnace cover is turned, it must be pulled vigorously with a long furnace hook; To cover it, because the fire sprayed from the furnace mouth is afraid to approach, it is often difficult to find the position and it is difficult to cover it. It has to be switched on and off several times a day, and each time it takes 2-3 people

In this way, manpower is wasted, time is wasted, energy is wasted, and it is not safe

The hoisting tray moves, because the lifting rope is soft, the hoisting tray will shake and sway continuously during the traveling process, it is difficult to stabilize manually, and it is difficult to enter the heating furnace or isothermal tank in a short time, wasting time, furnace cooling, Cooling of the workpiece, etc.; the shaking of the material tray can easily cause the workpiece to scatter or hit the furnace mouth, furnace wall, quenching tank, heater, etc., causing damage; When the crane is hoisting goods, it goes up, down, forward, and backward. If the speed is too fast, under the action of gravity or inertia, it may cause phenomena such as hitting the top, bottoming, and crashing. It is difficult to control only by the friction brake of the wheels

However, it is difficult for manual control to meet the standard requirements of quenching process in terms of time, speed, and accuracy.

Unstable quality and high scrap rate are difficult problems that have been entangled in the heat treatment industry for many years

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