Travel vibration suppressing device for working vehicle

Details Travel vibration suppressing device for working vehicle Travel vibration suppressing device for working vehicle

2004-10-07

2009-11-24

Lopez, F. Daniel (Department: 3745)

Power plants

Pressure fluid source and motor

Having means controlling or attenuating shock vibration,...

Reexamination Certificate

active

07621124

ABSTRACT:
A travel vibration suppressing device20is structured such that a directional control valve30for a bucket, a directional control valve29for a boom, a ride control valve31and a boom speed increasing valve33are integrally arranged in a laminated manner by an internal piping. The ride control valve31communicates or cuts off a bottom chamber11aof a boom cylinder11and an accumulator27. The boom speed increasing valve33supplies a discharge pressure of a hydraulic pump21to the bottom chamber11aor a head chamber11bor connects the to the bottom chamber11aor the head chamber11bto a tank23.

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