Title:
ELEVATING DEVICE
Document Type and Number:
Japanese Patent JP3635739
Kind Code:
B2
Abstract:
PROBLEM TO BE SOLVED: To relieve the pulsation of an oil pressure generated when the work device installed on a travelling body is risen by a valve PWM controlled.
SOLUTION: The work device is installed on a running car body elevatingly by a hydraulic cylinder 17 and when the oil discharged from a pump 20 is sent to the hydraulic cylinder 17 by a valve 35 PWM controlled, the work device is risen and also when the oil in the hydraulic cylinder 17 is returned to a tank 21, the work device is lowered. A check valve 40 for streaming the oil to only the hydraulic cylinder 17 side is installed in the oil passage between the valve 35 and the hydraulic cylinder 17.
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| JPS58134400 | 【考案の名称】油圧ジヤツキの荷重表示装置 |
Inventors:
Fumio Shigematsu
Shiro Katsuno
Shiro Katsuno
Application Number:
JP25043595A
Publication Date:
April 06, 2005
Filing Date:
September 28, 1995
Export Citation:
Assignee:
Iseki Agricultural Machinery Co., Ltd.
International Classes:
B66F17/00; B66F9/22; F15B11/028; F15B13/044; F16K21/00; (IPC1-7): B66F9/22; B66F17/00; F15B11/028; F15B13/044; F16K21/00
Domestic Patent References:
| JP5103504A |
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