Backhoe swing mechanism

Details Backhoe swing mechanism Backhoe swing mechanism

E - Fixed Constructions

02

F

214/27

E02F 3/32 (2006.01) E02F 3/38 (2006.01) E02F 3/42 (2006.01) F15B 15/04 (2006.01) F15B 15/06 (2006.01)

Patent

CA 1185569

ABSTRACT An improved hydraulic control system is disclosed for operating the swing tower and boom of a backhoe. The system includes a pair of hydraulic motors interconnected between the backhoe frame and swing tower. A sequencing valve is hydraulically associated with respective ends of the hydraulic motors and operates to direct the flow of pressurized hydraulic fluid to the motors for improved performance as they rotate the swing tower and boom. A hydraulic cushioning circuit associated with the sequencing valve provides an improved arrangement for cushioning of the swing mechanism as the swing tower and boom are moved toward either of their travel stops without the use of conventional cushioning devices.

413203

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