JPS60107405U - Switching operation circuit for cargo handling control valve in forklift - Google Patents
Switching operation circuit for cargo handling control valve in forkliftInfo
- Publication number
- JPS60107405U JPS60107405U JP20138283U JP20138283U JPS60107405U JP S60107405 U JPS60107405 U JP S60107405U JP 20138283 U JP20138283 U JP 20138283U JP 20138283 U JP20138283 U JP 20138283U JP S60107405 U JPS60107405 U JP S60107405U
- Authority
- JP
- Japan
- Prior art keywords
- pilot
- control valve
- forklift
- cargo handling
- switching operation
- 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
Abstract
(57)【要約】本公報は電子出願前の出願データであるた
め要約のデータは記録されません。(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.
Description
図面は本考案の実施例を示し、第１図は実施例１を示す
油圧回路図、第２図は電磁開閉弁の駆動信号とパイロッ
ト圧油の流量との関係を示すグラフ、第３図は実施例２
を示す油圧回路図、第４図は実施例３を示す油圧回路図
、第５図は実施例４を示す油圧回路図である。
２…コントロールバルブ、８・・・油室、９…パイロツ
トピストン、１０・参〇スプール、１２φφ会パイロツ
ト流入管路、１４・・・電磁開閉弁、１５・・・パイロ
ットドレン管路、１６・・・絞り弁、１７・・・操作部
、１８・・・ソレノイド回路。The drawings show an embodiment of the present invention; Fig. 1 is a hydraulic circuit diagram showing Embodiment 1, Fig. 2 is a graph showing the relationship between the drive signal of the electromagnetic on-off valve and the flow rate of pilot pressure oil, and Fig. 3 is a graph showing the relationship between the drive signal of the electromagnetic on-off valve and the flow rate of pilot pressure oil. Example 2
FIG. 4 is a hydraulic circuit diagram showing the third embodiment, and FIG. 5 is a hydraulic circuit diagram showing the fourth embodiment. 2...Control valve, 8...Oil chamber, 9...Pilot piston, 10. Spool, 12φφ pilot inflow pipe, 14...Solenoid shut-off valve, 15...Pilot drain pipe, 16... - Throttle valve, 17... Operating unit, 18... Solenoid circuit.
Claims (1)
ントロールバルブのスプールにパイロットピストンを設
けるとともに、該パイロットピストンの両側にパイロッ
ト圧油を導入する２本のパイロット流入管路と、これに
対応して設けられたパイロット圧油導出用の２本のパイ
ロットドレン管路との、いずれか一方には制御装置から
の電気信号に基いて開閉作動される電磁開閉弁をそ−れ
ぞれ設け、他方には流量規制用の絞り弁をそれぞれ設け
たことを特徴とするフォークリフトにおける荷役用コン
トロールバルブの切換操作回路。A pilot piston is provided on the spool of a spring center type control valve that controls a hydraulic actuator, and two pilot inflow pipes are provided on both sides of the pilot piston to introduce pilot pressure oil, and a corresponding pilot is provided. One of the two pilot drain pipes for deriving pressure oil is equipped with an electromagnetic on-off valve that is operated to open and close based on an electrical signal from the control device, and the other is used to regulate the flow rate. A switching operation circuit for a control valve for cargo handling in a forklift, characterized in that each throttle valve is provided with a control valve for cargo handling in a forklift.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP20138283U JPS60107405U (en) | 1983-12-24 | 1983-12-24 | Switching operation circuit for cargo handling control valve in forklift |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP20138283U JPS60107405U (en) | 1983-12-24 | 1983-12-24 | Switching operation circuit for cargo handling control valve in forklift |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS60107405U true JPS60107405U (en) | 1985-07-22 |
Family
ID=30763120
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP20138283U Pending JPS60107405U (en) | 1983-12-24 | 1983-12-24 | Switching operation circuit for cargo handling control valve in forklift |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS60107405U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH04303394A (en) * | 1991-04-01 | 1992-10-27 | Mitsubishi Heavy Ind Ltd | Control device for fork lift |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5189081A (en) * | 1974-12-20 | 1976-08-04 | ||
| JPS5545023B2 (en) * | 1976-05-31 | 1980-11-15 | ||
| JPS5697604A (en) * | 1980-01-09 | 1981-08-06 | Kayaba Ind Co Ltd | Controller for oil-hydraulic cylinder |
| JPS5748681A (en) * | 1980-06-04 | 1982-03-20 | Suisse Horlogerie | Electronic watch |
| JPS57173604A (en) * | 1981-04-17 | 1982-10-26 | Kayaba Ind Co Ltd | Proportional control solenoid valve |
| JPS58152906A (en) * | 1982-03-05 | 1983-09-10 | Komatsu Ltd | Driving method of oil hydraulic equipment by solenoid valve |
-
1983
- 1983-12-24 JP JP20138283U patent/JPS60107405U/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5189081A (en) * | 1974-12-20 | 1976-08-04 | ||
| JPS5545023B2 (en) * | 1976-05-31 | 1980-11-15 | ||
| JPS5697604A (en) * | 1980-01-09 | 1981-08-06 | Kayaba Ind Co Ltd | Controller for oil-hydraulic cylinder |
| JPS5748681A (en) * | 1980-06-04 | 1982-03-20 | Suisse Horlogerie | Electronic watch |
| JPS57173604A (en) * | 1981-04-17 | 1982-10-26 | Kayaba Ind Co Ltd | Proportional control solenoid valve |
| JPS58152906A (en) * | 1982-03-05 | 1983-09-10 | Komatsu Ltd | Driving method of oil hydraulic equipment by solenoid valve |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH04303394A (en) * | 1991-04-01 | 1992-10-27 | Mitsubishi Heavy Ind Ltd | Control device for fork lift |
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