| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide a tank of construction machinery capable of suppressing the generation of rust caused by remains of washing liquids inside of the tank. <P>SOLUTION: A hydraulic oil tank 11 is composed of a cylindrical body 12 formed in a cylindrical shape extending in a vertical direction by curving a flat plate 13 to join both ends 13A, 13B thereof, a bottom plate 17 blocking a lower end part of the cylindrical body 12, and an upper plate 19 blocking an upper end part of the cylindrical body 12. A bent part 14 is provided in the one end part 13A of the flat plate 13 forming the cylindrical body 12, which forms a clearance S in an overlapping portion 12A where the one end part 13A overlaps the other end part 13B when the cylindrical body 12 is formed by curving the flat plate 13. Capillary phenomenon in the overlapping portion 12A is suppressed by the clearance S, and thereby the generation of rust due to remains of washing liquids in the overlapping portion 12A can be suppressed. <P>COPYRIGHT: (C)2012,JPO&INPIT |
