JPH0228899U - - Google Patents
Info
- Publication number
- JPH0228899U JPH0228899U JP10775288U JP10775288U JPH0228899U JP H0228899 U JPH0228899 U JP H0228899U JP 10775288 U JP10775288 U JP 10775288U JP 10775288 U JP10775288 U JP 10775288U JP H0228899 U JPH0228899 U JP H0228899U
- Authority
- JP
- Japan
- Prior art keywords
- lift
- weight
- control
- joystick
- outputs
- 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.)
- Granted
Links
- 238000001514 detection method Methods 0.000 claims 3
- 238000010586 diagram Methods 0.000 description 7
Landscapes
- Forklifts And Lifting Vehicles (AREA)
Description
第１図はこの考案の一実施例によるバツテリフ
オークリフトの油圧制御装置における油圧回路の
構成を示すブロツク図、第２図はジヨイステイツ
ク９の一例を示す図、第３図は第１図の油圧回路
に対応した電気回路の構成の一例を示すブロツク
図、第４図はチヨツパ制御回路１３から出力され
るチヨツパ制御電圧の可変抵抗器１４１および１
４２の制御電圧Ｖａ１およびＶａ２に対する特性
図、第５図は制御回路１０から出力される電磁バ
ルブ制御電圧の可変抵抗器１４１および１４２の
制御電圧Ｖａ１およびＶａ２に対する特性図、第
６図は制御回路１０から出力される電磁バルブ１
１２の最大制御電圧のリフト上の荷物の重量に対
する特性図、第７図は第３図の電気回路の動作を
示すタイミングチヤート、第８図はリフトの昇降
および前後傾と電磁バルブ１１１〜１１６の開閉
との関係を示す図、第９図は従来のバツテリフオ
ークリフトの油圧制御装置における油圧回路の構
成例を示すブロツク図、第１０図は第９図のコン
トロールバルブ３の動作図である。
９…ジヨイステイツク、１０…制御回路、１３
…重量検出器、１５１，１５２…可変抵抗器。
FIG. 1 is a block diagram showing the configuration of a hydraulic circuit in a hydraulic control system for a battery fork lift according to an embodiment of this invention, FIG. 2 is a diagram showing an example of the joystick 9, and FIG. 3 is the hydraulic circuit of FIG. 1. FIG. 4 is a block diagram showing an example of the configuration of an electric circuit corresponding to the chopper control circuit 13 .
5 is a characteristic diagram of the electromagnetic valve control voltage output from the control circuit 10 with respect to the control voltages Va 1 and Va 2 of the variable resistors 14 1 and 14 2 , Figure 6 shows the electromagnetic valve 1 output from the control circuit 10.
1 2 is a characteristic diagram of the maximum control voltage of the load on the lift, FIG. 7 is a timing chart showing the operation of the electric circuit of FIG. 3, and FIG . Fig . 9 is a block diagram showing an example of the configuration of a hydraulic circuit in a conventional battery lift hydraulic control system; Fig. 10 is an operation diagram of the control valve 3 in Fig. 9; be. 9... Joystick, 10... Control circuit, 13
...Weight detector, 15 1 , 15 2 ... Variable resistor.
Claims (1)
出し、該オイルをリフトを昇降させるリフトシリ
ンダおよび前記リフトを前後傾させるチルトシリ
ンダへバルブの開閉により流入させ、前記リフト
を昇降および前後傾させるバツテリフオークリフ
トの油圧制御装置において、ジヨイステイツクと
、該ジヨイステイツクの操作に応じて制御電圧を
発生する可変抵抗器と、前記リフト上の荷物の重
量を検出して重量検出信号を出力する重量検出器
と、前記制御電圧を処理して、前記ジヨイステイ
ツクの急激な操作に対して、前記バルブを緩やか
に開閉し、かつ、前記リフト下降時には、前記重
量検出信号に応じて前記リフトシリンダから流れ
出る前記オイルの量を制御する制御信号を出力す
る制御回路とを具備することを特徴とするバツテ
リフオークリフトの油圧制御装置。 Hydraulic pressure of a vertical lift truck that uses a pump to draw oil from an oil tank, and causes the oil to flow into a lift cylinder that raises and lowers the lift and a tilt cylinder that tilts the lift back and forth by opening and closing valves, and raises and lowers the lift and tilts it back and forth. The control device includes a joystick, a variable resistor that generates a control voltage according to the operation of the joystick, a weight detector that detects the weight of the load on the lift and outputs a weight detection signal, and a weight detector that outputs a weight detection signal by detecting the weight of the load on the lift. a control signal that is processed to slowly open and close the valve in response to a sudden operation of the joystick, and to control the amount of oil flowing out of the lift cylinder in response to the weight detection signal when the lift is lowered; A hydraulic control device for a battery lift truck, characterized by comprising a control circuit that outputs.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP10775288U JP2557935Y2 (en) | 1988-08-16 | 1988-08-16 | Hydraulic control device for battery forklift |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP10775288U JP2557935Y2 (en) | 1988-08-16 | 1988-08-16 | Hydraulic control device for battery forklift |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH0228899U true JPH0228899U (en) | 1990-02-23 |
| JP2557935Y2 JP2557935Y2 (en) | 1997-12-17 |
Family
ID=31342449
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP10775288U Expired - Lifetime JP2557935Y2 (en) | 1988-08-16 | 1988-08-16 | Hydraulic control device for battery forklift |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP2557935Y2 (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH09173193A (en) * | 1995-12-27 | 1997-07-08 | Nao Shingu Kk | pillow |
| CN112141962A (en) * | 2020-10-20 | 2020-12-29 | 安徽合力股份有限公司 | Hydraulic control system and control method for electric forklift |
-
1988
- 1988-08-16 JP JP10775288U patent/JP2557935Y2/en not_active Expired - Lifetime
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH09173193A (en) * | 1995-12-27 | 1997-07-08 | Nao Shingu Kk | pillow |
| CN112141962A (en) * | 2020-10-20 | 2020-12-29 | 安徽合力股份有限公司 | Hydraulic control system and control method for electric forklift |
Also Published As
| Publication number | Publication date |
|---|---|
| JP2557935Y2 (en) | 1997-12-17 |
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