JPH0165360U - - Google Patents
Info
- Publication number
- JPH0165360U JPH0165360U JP1987159429U JP15942987U JPH0165360U JP H0165360 U JPH0165360 U JP H0165360U JP 1987159429 U JP1987159429 U JP 1987159429U JP 15942987 U JP15942987 U JP 15942987U JP H0165360 U JPH0165360 U JP H0165360U
- Authority
- JP
- Japan
- Prior art keywords
- pressure
- display device
- control circuit
- operating
- hydraulic excavator
- 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 description 2
- 238000010586 diagram Methods 0.000 description 3
Landscapes
- Component Parts Of Construction Machinery (AREA)
Description
第１図は本考案の油圧シヨベルの旋回警報装置
の一実施例を示す回路図、第２図は本考案の油圧
シヨベルの旋回警報装置を備えた油圧シヨベルを
示す側面図、第３図はレバーの操作量とパイロツ
ト弁の２次側圧力との関係を示す特性線図、第４
図はパイロツト弁の２次側圧力と旋回用方向切換
弁の開口面積との関係を示す特性線図である。
１……走行体、２……旋回体、３……表示装置
、５……旋回用方向切換弁、６……パイロツト弁
、７，７′……パイロツト回路、８，８′……圧
力検出装置、１２……制御回路装置。
Fig. 1 is a circuit diagram showing an embodiment of the turning alarm device for a hydraulic excavator of the present invention, Fig. 2 is a side view showing a hydraulic excavator equipped with the turning alarm device for a hydraulic excavator of the present invention, and Fig. 3 is a lever Characteristic diagram showing the relationship between the manipulated variable and the secondary pressure of the pilot valve, No. 4
The figure is a characteristic diagram showing the relationship between the secondary side pressure of the pilot valve and the opening area of the swing directional control valve. 1... Traveling body, 2... Swinging body, 3... Display device, 5... Turning directional control valve, 6... Pilot valve, 7, 7'... Pilot circuit, 8, 8'... Pressure detection Device, 12...control circuit device.
Claims (1)
回体と、該旋回体に設けた旋回状態を表示する表
示装置と、該表示装置を作動する制御回路装置と
、該制御回路装置に信号を送る圧力検出装置と、
旋回用方向切換弁とそのパイロツト弁との間に圧
力検出装置を組み込んだパイロツト回路とを備え
た油圧シヨベルの旋回警報装置において、前記制
御回路装置の表示装置を作動させるための圧力設
定値を、前記パイロツト弁の２次側圧力における
第１次変曲点より低く設定したことを特徴とする
油圧シヨベルの旋回警報装置。 A traveling body, a rotating body rotatably mounted on the traveling body, a display device provided on the rotating body for displaying a turning state, a control circuit device for operating the display device, and a control circuit device for operating the display device. a pressure sensing device that sends a signal;
In a swing warning device for a hydraulic excavator, which includes a swing direction switching valve and a pilot circuit incorporating a pressure detection device between the pilot valve, a pressure setting value for operating a display device of the control circuit device, A swing warning device for a hydraulic excavator, characterized in that the pressure is set lower than the first inflection point in the secondary side pressure of the pilot valve.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP15942987U JPH052699Y2 (en) | 1987-10-20 | 1987-10-20 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP15942987U JPH052699Y2 (en) | 1987-10-20 | 1987-10-20 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH0165360U true JPH0165360U (en) | 1989-04-26 |
| JPH052699Y2 JPH052699Y2 (en) | 1993-01-22 |
Family
ID=31440636
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP15942987U Expired - Lifetime JPH052699Y2 (en) | 1987-10-20 | 1987-10-20 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH052699Y2 (en) |
-
1987
- 1987-10-20 JP JP15942987U patent/JPH052699Y2/ja not_active Expired - Lifetime
Also Published As
| Publication number | Publication date |
|---|---|
| JPH052699Y2 (en) | 1993-01-22 |