Title:
LOAD HANDLING REGENERATION METHOD AND LOAD HANDLING REGENERATION SYSTEM OF BATTERY TYPE INDUSTRIAL VEHICLE
Document Type and Number:
WIPO Patent Application WO/2006/090655
Kind Code:
A1
Abstract:
A load handling regeneration system in the lift device of a battery type industrial vehicle capable of supplying a hydraulic pressure oil to the other hydraulic actuators during regenerating operation by a simple structure, preventing the pressure oil from being fluctuated, and providing excellent regenerating efficiency. The load handling regeneration system comprises a lift cylinder (1) lifting a fork (F), an electric motor (4) operated by a battery power supply (5), a hydraulic pump (3) supplying the pressure oil to the lift cylinder (1), and a control valve (14) interposed in a pressure oil supply passage (23). Also, the load handling regeneration system comprises a controller (17) controlling the opening of the control valve (14) controlling the returned amount of the pressure oil to the hydraulic pump (3) when the fork (F) is lowered and the rotational speed of the motor (4) when a power is recovered by the battery power supply (5) by functioning the motor (4) as a generator by motor action produced when the pressure oil is returned to the hydraulic pump (3) by a load applied to the lift cylinder (1) when the fork (F) is lowered.
Inventors:
FUTAHASHI KENSUKE (JP)
SATOU HIROSHI (JP)
KAWAGUCHI MASATAKA (JP)
AKAGI TOMOHIRO (JP)
EGUCHI FUJIO (JP)
OGINO KEIZO (JP)
YUGUCHI SHINGO (JP)
KAWASHIMA KAZUSHI (JP)
AKAO MICHIO (JP)
SATOU HIROSHI (JP)
KAWAGUCHI MASATAKA (JP)
AKAGI TOMOHIRO (JP)
EGUCHI FUJIO (JP)
OGINO KEIZO (JP)
YUGUCHI SHINGO (JP)
KAWASHIMA KAZUSHI (JP)
AKAO MICHIO (JP)
Application Number:
PCT/JP2006/302899
Publication Date:
August 31, 2006
Filing Date:
February 13, 2006
Export Citation:
Assignee:
MITSUBISHI HEAVY IND LTD (JP)
FUTAHASHI KENSUKE (JP)
SATOU HIROSHI (JP)
KAWAGUCHI MASATAKA (JP)
AKAGI TOMOHIRO (JP)
EGUCHI FUJIO (JP)
OGINO KEIZO (JP)
YUGUCHI SHINGO (JP)
KAWASHIMA KAZUSHI (JP)
AKAO MICHIO (JP)
FUTAHASHI KENSUKE (JP)
SATOU HIROSHI (JP)
KAWAGUCHI MASATAKA (JP)
AKAGI TOMOHIRO (JP)
EGUCHI FUJIO (JP)
OGINO KEIZO (JP)
YUGUCHI SHINGO (JP)
KAWASHIMA KAZUSHI (JP)
AKAO MICHIO (JP)
International Classes:
B66F9/22; B66F9/24
Foreign References:
| JPH11165995A | 1999-06-22 | |||
| JPS55155503A | 1980-12-03 | |||
| JP2004084470A | 2004-03-18 | |||
| JP2000351574A | 2000-12-19 | |||
| JPH0228499A | 1990-01-30 | |||
| JPS5281856A | 1977-07-08 | |||
| JPS5770975A | 1982-05-01 | |||
| JP2539648Y2 | 1997-06-25 | |||
| JPH04347381A | 1992-12-02 | |||
| JPH04179698A | 1992-06-26 |
Other References:
See also references of EP 1852387A4
Attorney, Agent or Firm:
Takahashi, Masahisa (Ambassador Roppongi Buildings 16-13, Roppongi 3-chom, Minato-ku Tokyo 32, JP)
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