Oil leakage prevention device for deep part of oil duct of casting box body with complex structure

The utility model discloses an oil leakage prevention device for the deep position of an oil duct of a casting box with a complex structure, which comprises an aluminum pipe arranged in the oil duct, a plurality of O-shaped ring grooves are arranged on the outer circle of the aluminum pipe, O-shaped sealing rings are arranged in the O-shaped ring grooves, the outer diameter of the aluminum pipe is 0.2-0.3 mm smaller than the inner diameter of the expanded oil duct, the number of the O-shaped ring grooves on the outer circle of the aluminum pipe is 2-5, the depth of the O-shaped ring grooves is 1-1.5 mm, and the width of the O-shaped ring grooves is 1-2mm. The utility model has a simple structure, can effectively solve the problems of oil seepage and oil leakage of the oil duct of the box body, reduces the scrap quantity of the box body, and saves the production cost. 本实用新型公开了一种复杂结构铸造箱体油道深处防渗漏油装置，包括设置于油道内的铝管，在铝管外圆设有数道O型圈槽，O型圈槽内设有O型密封圈，铝管的外径比扩孔后的油道内径小0.2～0.3mm，铝管外圆上的O型圈槽数量为2～5条、深度为1～1.5mm，宽度为1～2mm。本实用新型结构简单，能有效