JPH01162867U - - Google Patents
Info
- Publication number
- JPH01162867U JPH01162867U JP6023388U JP6023388U JPH01162867U JP H01162867 U JPH01162867 U JP H01162867U JP 6023388 U JP6023388 U JP 6023388U JP 6023388 U JP6023388 U JP 6023388U JP H01162867 U JPH01162867 U JP H01162867U
- Authority
- JP
- Japan
- Prior art keywords
- steering
- valve
- pilot
- electromagnetic
- flow rate
- 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
- 230000035945 sensitivity Effects 0.000 claims description 2
- 238000010586 diagram Methods 0.000 description 2
Description
第１図はこの考案にかかるステアリング操作感
度の切換装置を示す回路図、第２図はホイールロ
ーダの側面図、第３図はホイールローダの従来技
術ステアリング回路図である。
３……ハンドル、５……ステアリングユニツト
、１３……ステアリングバルブ、１４，１５，２
４，２５……パイロツト圧受圧部、１６Ｌ，１６
Ｒ……ステアリングシリンダ、２１……電磁開閉
弁、２２……ソレノイド、２３……パイロツト切
換弁、２６……可変絞り部、２７……スイツチ。
FIG. 1 is a circuit diagram showing a steering operation sensitivity switching device according to this invention, FIG. 2 is a side view of a wheel loader, and FIG. 3 is a conventional steering circuit diagram of a wheel loader. 3... Handle, 5... Steering unit, 13... Steering valve, 14, 15, 2
4, 25...Pilot pressure receiving part, 16L, 16
R...Steering cylinder, 21...Solenoid on-off valve, 22...Solenoid, 23...Pilot switching valve, 26...Variable throttle section, 27...Switch.
Claims (1)
比例したパイロツト流量をステアリングバルブへ
導出するステアリングユニツトを使用し、ステア
リングポンプ、スイツチポンプからの圧油をステ
アリングバルブを介してステアリングシリンダに
供給するようにしたステアリング回路において、
上記ステアリングユニツトと、ステアリングバル
ブの左右パイロツト圧受圧部とを連通するそれぞ
れパイロツト油路を電磁開閉弁および可変絞り部
付パイロツト切換弁を介して連結し、上記ステア
リングバルブの左右パイロツト圧受圧部間を連通
可能なバイパス回路を形成し、上記電磁開閉弁の
ソレノイドを通電せしめかつハンドルをステアリ
ング操作するとき上記パイロツト切換弁を可変絞
り部付油路位置に切換作動可能とするとともに、
ステアリングバルブへ作用するパイロツト圧油流
量を調整可能に設定して構成したことを特徴とす
るステアリング操作感度の切換装置。 Using a steering unit that is directly connected to the steering wheel and driven to direct a pilot flow rate proportional to its rotational speed to the steering valve, pressure oil from the steering pump and switch pump is supplied to the steering cylinder via the steering valve. In the steering circuit,
Pilot oil passages communicating between the steering unit and the left and right pilot pressure receiving parts of the steering valve are connected via an electromagnetic on-off valve and a pilot switching valve with a variable throttle part, so that the left and right pilot pressure receiving parts of the steering valve are connected. forming a communicatable bypass circuit, energizing the solenoid of the electromagnetic on-off valve, and enabling the pilot switching valve to be switched to the oil path position with the variable throttle portion when the steering wheel is operated;
A steering operation sensitivity switching device characterized in that the flow rate of pilot pressure oil acting on a steering valve is configured to be adjustable.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP6023388U JPH01162867U (en) | 1988-05-06 | 1988-05-06 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP6023388U JPH01162867U (en) | 1988-05-06 | 1988-05-06 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH01162867U true JPH01162867U (en) | 1989-11-13 |
Family
ID=31285949
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP6023388U Pending JPH01162867U (en) | 1988-05-06 | 1988-05-06 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH01162867U (en) |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS6261877A (en) * | 1985-09-11 | 1987-03-18 | Kubota Ltd | Reaction switching device for power steering |
-
1988
- 1988-05-06 JP JP6023388U patent/JPH01162867U/ja active Pending
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS6261877A (en) * | 1985-09-11 | 1987-03-18 | Kubota Ltd | Reaction switching device for power steering |