Title:
LOWERING SPEED CONTROLLER
Document Type and Number:
Japanese Patent JPH04358699
Kind Code:
A
Abstract:
PURPOSE: To prevent a shock due to a sudden lowering during the lowering of an elevation lift cylinder of a fork lift.
CONSTITUTION: The base end and the end of a hydraulic pipe line 16 are respectively provided with hydraulic sensors 17a, 17b. The difference of hydraulic pressure by the hydraulic sensors 17a, 17b is obtained so that flow rate Q is calculated and an electromagnetic proportional control valve is driven.
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Inventors:
AOKI KANJI
MIYAZAKI SHUICHI
MIDORIKAWA TOSHIYUKI
MIYAZAKI SHUICHI
MIDORIKAWA TOSHIYUKI
Application Number:
JP3533791A
Publication Date:
December 11, 1992
Filing Date:
February 05, 1991
Export Citation:
Assignee:
MITSUBISHI HEAVY IND LTD
MHI SAGAMI HIGHTEC KK
MHI SAGAMI HIGHTEC KK
International Classes:
B66F9/22; B66F9/24; F15B11/04; (IPC1-7): B66F9/22; B66F9/24; F15B11/04
Attorney, Agent or Firm:
Tadataka Mitsuishi (1 person outside)