SUSPENSION CONTROL DEVICE FOR VEHICULAR CONSTRUCTION MACHINE

Title:

SUSPENSION CONTROL DEVICE FOR VEHICULAR CONSTRUCTION MACHINE

Document Type and Number:

Japanese Patent JPH06286446

Kind Code:

A

Abstract:

PURPOSE: To improve the comfortableness during the front work by effectively damping the pitching vibration caused by the operation of a front work device.

CONSTITUTION: A suspension control device is provided with a pressure switch 25 opened or closed by the pilot pressure of a pilot valve 20 operating a front work device FW. When it is detected that the pressure switch 25 is opened by the pilot pressure and the front work device is in operation, solenoid valves 8L, 8R are closed, accumulators 4L, 4R and suspension cylinders 3L, 3R are cut off, and a suspension is locked. When it is detected that the operation of the front work device FW is stopped, the solenoid valves 8L, 8R are opened, the accumulators 4L, 4R and the suspension cylinders 3L, 3R are communicated, and the lock of the suspension is released.

Inventors:

IIJIMA TAKESHI

Application Number:

JP7193993A

Publication Date:

October 11, 1994

Filing Date:

March 30, 1993

Export Citation:

Click for automatic bibliography generation Help

Assignee:

HITACHI CONSTRUCTION MACHINERY

International Classes:

B60G17/005; B60G17/015; E02F9/02; E02F9/16; E02F9/22; (IPC1-7): B60G17/005; E02F9/02; E02F9/16; E02F9/22

Attorney, Agent or Firm:

Fuyuki Nagai

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