HYDRAULIC SYSTEM AND WORK MACHINE

摘要

A hydraulic system includes a motor. A brake is to be actuated by an operation fluid to brake the motor when a hydraulic pressure is relieved and to release the braking when the hydraulic pressure is applied. A switch valve is to be switched to a first position and to a second position, the first position being provided for relieving the hydraulic pressure from the brake, the second position being provided for applying the hydraulic pressure to the brake. A first fluid tube is to connect the switch valve and the brake. A second fluid tube is connected to the first fluid tube at a connecting portion and communicated with a tank A first throttle is disposed on the second fluid tube. A second throttle is disposed on the first fluid tube and on an upstream side between the connecting portion and the switch valve.

主权项

1. A hydraulic system comprising:
a motor; a brake to be actuated by an operation fluid to brake the motor when a hydraulic pressure is relieved and to release the braking when the hydraulic pressure is applied; a switch valve to be switched to a first position and to a second position, the first position being provided for relieving the hydraulic pressure from the brake, the second position being provided for applying the hydraulic pressure to the brake; a first fluid tube to connect the switch valve and the brake; a second fluid tube connected to the first fluid tube at a connecting portion and communicated with a tank; a first throttle disposed on the second fluid tube; and a second throttle disposed on the first fluid tube and on an upstream side between the connecting portion and the switch valve.