JPS55155503A - Control unit for loading/unloading dc shunt motor in storage battery type fork lift truck - Google Patents
Control unit for loading/unloading dc shunt motor in storage battery type fork lift truckInfo
- Publication number
- JPS55155503A JPS55155503A JP6417479A JP6417479A JPS55155503A JP S55155503 A JPS55155503 A JP S55155503A JP 6417479 A JP6417479 A JP 6417479A JP 6417479 A JP6417479 A JP 6417479A JP S55155503 A JPS55155503 A JP S55155503A
- Authority
- JP
- Japan
- Prior art keywords
- lifting
- speed
- motor
- loading
- lever
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
Landscapes
- Forklifts And Lifting Vehicles (AREA)
- Control Of Direct Current Motors (AREA)
Abstract
PURPOSE: To control the speed of the loading/unloading motor to an optimum value responsive to the loads of high and low power actuators by employing one motor to be switched for both lifting and tilting operations upon switching of a control circuit therefor.
CONSTITUTION: The loading/unloading motor is constructed to actuate both lifting and tilting operations of forks in the storage battery type fork lift truck. The motor control circuit 1 has a lifting speed instruction circuit (speed instruction circuit for high power actuator) and a tilting speed instruction circuit. When an operator slightly moves a lifting lever 9 or a tilting lever 15, a lift instruction circuit or a tilt instruction circuit is operated by a limit switch 14, 20 or 21. When the lever is further moved, hydraulic oil is flowed from a hydraulic pump to a lifting or titling cylinder to telescope the piston in the cylinder at a speed responsive to the opening of a control valve 10 or 16. When the control valve is fully opened, the motor speed is instructed in response to the moved amount of the lever.
COPYRIGHT: (C)1980,JPO&Japio
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP6417479A JPS55155503A (en) | 1979-05-24 | 1979-05-24 | Control unit for loading/unloading dc shunt motor in storage battery type fork lift truck |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP6417479A JPS55155503A (en) | 1979-05-24 | 1979-05-24 | Control unit for loading/unloading dc shunt motor in storage battery type fork lift truck |
Publications (1)
Publication Number | Publication Date |
---|---|
JPS55155503A true JPS55155503A (en) | 1980-12-03 |
Family
ID=13250429
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP6417479A Pending JPS55155503A (en) | 1979-05-24 | 1979-05-24 | Control unit for loading/unloading dc shunt motor in storage battery type fork lift truck |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS55155503A (en) |
Cited By (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS5822299A (en) * | 1981-07-29 | 1983-02-09 | 日産自動車株式会社 | Forklift |
JPS58196400U (en) * | 1982-06-23 | 1983-12-27 | 小松フオ−クリフト株式会社 | Rotation speed control device for hydraulic motor of battery forklift truck |
JPS6040400A (en) * | 1984-03-29 | 1985-03-02 | 新明和工業株式会社 | Feeder for control signal of service car |
JPH0651557B2 (en) * | 1983-05-26 | 1994-07-06 | キャタピラー インダストリアル インコーポレーテッド | Automatic hydraulic speed controller |
WO2006090655A1 (en) * | 2005-02-25 | 2006-08-31 | Mitsubishi Heavy Industries, Ltd. | Load handling regeneration method and load handling regeneration system of battery type industrial vehicle |
Citations (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS5172047A (en) * | 1974-12-20 | 1976-06-22 | Komatsu Mfg Co Ltd | BATSUTERIFUOOKURIFUTONI OKERU SAGYOKINO SEIGYOSOCHI |
-
1979
- 1979-05-24 JP JP6417479A patent/JPS55155503A/en active Pending
Patent Citations (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS5172047A (en) * | 1974-12-20 | 1976-06-22 | Komatsu Mfg Co Ltd | BATSUTERIFUOOKURIFUTONI OKERU SAGYOKINO SEIGYOSOCHI |
Cited By (9)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS5822299A (en) * | 1981-07-29 | 1983-02-09 | 日産自動車株式会社 | Forklift |
JPS58196400U (en) * | 1982-06-23 | 1983-12-27 | 小松フオ−クリフト株式会社 | Rotation speed control device for hydraulic motor of battery forklift truck |
JPH0651557B2 (en) * | 1983-05-26 | 1994-07-06 | キャタピラー インダストリアル インコーポレーテッド | Automatic hydraulic speed controller |
JPS6040400A (en) * | 1984-03-29 | 1985-03-02 | 新明和工業株式会社 | Feeder for control signal of service car |
JPH0536359B2 (en) * | 1984-03-29 | 1993-05-28 | Shin Meiwa Ind Co Ltd | |
WO2006090655A1 (en) * | 2005-02-25 | 2006-08-31 | Mitsubishi Heavy Industries, Ltd. | Load handling regeneration method and load handling regeneration system of battery type industrial vehicle |
JPWO2006090655A1 (en) * | 2005-02-25 | 2008-07-24 | 三菱重工業株式会社 | Cargo handling and regeneration method for battery-powered industrial vehicles and cargo handling and regeneration system |
US7770697B2 (en) | 2005-02-25 | 2010-08-10 | Mitsubishi Heavy Industries, Ltd. | Energy recovering method and system in hydraulic lift device of battery operated industrial trucks |
JP4727653B2 (en) * | 2005-02-25 | 2011-07-20 | 三菱重工業株式会社 | Cargo handling and regeneration method for battery-powered industrial vehicles and cargo handling and regeneration system |
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