Interference fit composite cylinder sleeve disassembling furnace

Abstract

The invention belongs to the field of remanufacturing disassembling equipment, and relates to an interference fit composite cylinder sleeve disassembling furnace which is used for disassembling a workpiece outer sleeve and a workpiece inner container and comprises a furnace lining, a furnace cover is arranged at the top of the furnace lining, a hearth is defined by the furnace cover and the furnace lining, and the workpiece outer sleeve and the workpiece inner container are arranged in the hearth; a heating element is arranged on the inner wall of the furnace lining, an upper reducing brick and a lower reducing brick are arranged in the hearth, the upper reducing brick is arranged between the workpiece outer sleeve and the furnace cover, the lower reducing brick is arranged below the workpiece outer sleeve, and the inner diameter of the lower reducing brick is larger than the outer diameter of the workpiece inner container; the furnace cover is provided with an air inlet, and the lowerwall of the furnace lining is provided with an air outlet; the air inlet and the air outlet are right opposite to an inner cavity of the workpiece inner container, and a ventilation mechanism is arranged below the furnace lining and comprises a draught fan. The workpiece outer sleeve is heated to expand by a heating method, the workpiece inner container naturally falls off, the workpiece is not easy to damage and can be reused, the remanufacturing cost is reduced, and the safety is high.

Description

technical field [0001] The invention relates to an interference fit composite cylinder liner dismantling furnace, which belongs to the field of remanufacturing and dismantling equipment. Background technique [0002] At present, my country's construction machinery products have entered the peak period of decommissioning. Many mechanical parts are multi-layer composite products assembled by interference fit. Technology adopts mechanical dismantling and liquid nitrogen to cool the workpiece inner cavity for this interference-fit workpiece jacket and workpiece inner tank. Mechanical disassembly relies on external large mechanical force to overcome the gap between the workpiece jacket and workpiece inner tank The friction force generated by the contact pressure between them, this dismantling method will cause great damage to the interference fit workpiece jacket and workpiece inner tank, especially in the case of damaged and deformed workpieces, the disassembled workpiece jacket a...

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Problems solved by technology

[0002] At present, my country's construction machinery products have entered the peak period of decommissioning. Many mechanical parts are multi-layer composite products assembled by interference fit. Technology adopts mechanical dismantling and liquid nitrogen to cool the workpiece inner cavity for this interference-fit workpiece jacket and workpiece inner tank. Mechanical disassembly relies on external large mechanical force to overcome the gap between the workpiece jacket and workpiece inner tank The friction force generated by the contact pressure between them, this dismantling method will cause great damage to the interference fit workpiece jacket and workpiece inner tank, especially in the case of damaged and deformed workpieces, the disassembled workpiece jacket and workpiece inner tank It is generally discarded, not energy-saving and environmentally friendly, with high economic costs and poor social benefits; liquid nitrogen is used to cool the inner cavity of the workpiece inner cavity and dismantle it, and use liquid nitrogen to cool the inner cavity of the workpiece inner cavity, so that the inner cavity of the workpiece shrinks and falls off. The method of dismantling the workpiece is not easy to be damaged, but the cost of this method is too high, the requirements for the sealing of the equipment are high, and the liquid nitrogen is easy to cause personal injury

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