Title:
WHEEL SHOVEL HAVING SUSPENSION DEVICE
Document Type and Number:
Japanese Patent JP3623384
Kind Code:
B2
Abstract:
PROBLEM TO BE SOLVED: To make suspension performance easily changeable.
SOLUTION: A variable throttle is provided in a passage C1 communicating with a bottom chamber 2b and a rod chamber 2c of a suspension hydraulic cylinder 2. Here, a pair of pilot check valves 17A, 17B and a block 1B housing the variable throttle VD are integrally mounted in the suspension hydraulic cylinder 2. An opening area of the variable throttle is changed to change suspension performance particularly damping performance.
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Inventors:
Kazuhiro Ichimura
Hiroshi Tsukui
Toshihiro Tateno
Hiroshi Tsukui
Toshihiro Tateno
Application Number:
JP3604899A
Publication Date:
February 23, 2005
Filing Date:
February 15, 1999
Export Citation:
Assignee:
Hitachi Construction Machinery Co., Ltd.
International Classes:
B60G17/005; B60G17/056; E02F9/06; E02F9/22; (IPC1-7): B60G17/056; E02F9/06
Domestic Patent References:
| JP9030229A | ||||
| JP60113709A | ||||
| JP2068203U | ||||
| JP7223419A | ||||
| JP5221212A | ||||
| JP7223419A | ||||
| JP7242114A | ||||
| JP9323522A | ||||
| JP62174908U |
Attorney, Agent or Firm:
Fuyuki Nagai
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