JPH0312949U - - Google Patents
Info
- Publication number
- JPH0312949U JPH0312949U JP7223789U JP7223789U JPH0312949U JP H0312949 U JPH0312949 U JP H0312949U JP 7223789 U JP7223789 U JP 7223789U JP 7223789 U JP7223789 U JP 7223789U JP H0312949 U JPH0312949 U JP H0312949U
- Authority
- JP
- Japan
- Prior art keywords
- pilot
- operating
- ports
- rotary spool
- switching valve
- 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
- 238000011017 operating method Methods 0.000 claims 4
- 238000010586 diagram Methods 0.000 description 3
Landscapes
- Operation Control Of Excavators (AREA)
- Fluid-Pressure Circuits (AREA)
Description
第１図はこの考案にかかる操作装置を示す油圧
回路図、第２図はこの考案の切替弁内部を示すた
て断面図、第３図は油圧シヨベルの側面図、第４
図は第３図内運転室の内部を示す斜視図、第５図
は従来技術操作装置を示す油圧回路図、第６図は
従来技術の切替弁内部を示すたて断面図である。
６……旋回モータ、７……ブームシリンダ、８
……アームシリンダ、９……バケツトシリンダ、
１３，１４……左、右操作レバー、２３，〜，２
８……制御弁、６０，６４……切替弁、６１，６
５……ケーシング、６２，６６……ロータリスプ
ール。
Fig. 1 is a hydraulic circuit diagram showing the operating device according to this invention, Fig. 2 is a vertical sectional view showing the inside of the switching valve of this invention, Fig. 3 is a side view of the hydraulic excavator, and Fig. 4 is a hydraulic circuit diagram showing the operating device according to this invention.
The drawings are a perspective view showing the inside of the operator's cab in FIG. 3, FIG. 5 a hydraulic circuit diagram showing a conventional operating device, and FIG. 6 a vertical sectional view showing the inside of a conventional switching valve. 6...Swivel motor, 7...Boom cylinder, 8
...Arm cylinder, 9...Bucket cylinder,
13, 14...Left and right operating levers, 23, ~, 2
8... Control valve, 60, 64... Switching valve, 61, 6
5...Casing, 62, 66...Rotary spool.
Claims (1)
シリンダ、バケツトシリンダ、旋回モータの各作
業機用アクチユエータの作動を制御する所要数の
パイロツト式制御弁と、これら各制御弁のパイロ
ツトポートに対応する所要数のパイロツト弁と、
これらのパイロツト弁を操作する複数の操作レバ
ーと、上記各制御弁のパイロツトポートと各パイ
ロツト弁とを接続する１個の操作方式切替弁を具
備し、その切替弁用ケーシング内にロータリスプ
ールが所定の角度範囲で複数ポジシヨンに回転変
位自在に挿入されて構成され、上記ケーシングに
各パイロツト弁に別個に接続される所要数の入力
ポートと、上記各パイロツトポートに別個に接続
される所要数の出力ポートとが軸方向ならびに周
方向に所定の間隔で設けられ、ロータリスプール
には複数の径方向の穴と複数の軸方向の穴とを連
通させてなる複数の通路が各ポジシヨン毎に各入
力ポートと出力ポートの接続関係を変換する配置
で設定構成されている操作装置において、上記操
作方式切替弁のロータリスプールをさらに軸方向
に所定のストローク量だけ移動可能に形成し、上
記ロータリスプールを軸方向にストローク操作さ
せたときロータリスプール回転操作時の複数操作
方式と異なる別の操作方式を追加設定可能に構成
したことを特徴とする油圧シヨベルの操作装置。 A required number of pilot type control valves that control the operation of actuators for each work equipment such as a boom cylinder, arm cylinder, bucket cylinder, and swing motor in a hydraulic excavator, and a required number of pilot valves corresponding to the pilot ports of each of these control valves. and,
It is equipped with a plurality of operating levers for operating these pilot valves, and one operating method switching valve that connects the pilot ports of each of the control valves and each pilot valve, and a rotary spool is provided within the switching valve casing. The casing has a required number of input ports that are separately connected to each pilot valve, and a required number of output ports that are separately connected to each of the pilot ports. Ports are provided at predetermined intervals in the axial and circumferential directions, and the rotary spool has a plurality of passages that communicate with a plurality of radial holes and a plurality of axial holes for each input port at each position. In the operating device configured to change the connection relationship between the operating mode switching valve and the output port, the rotary spool of the operating method switching valve is formed to be movable by a predetermined stroke amount in the axial direction, and the rotary spool is moved in the axial direction. An operating device for a hydraulic excavator, characterized in that, when a stroke is operated, another operating method different from the multiple operating methods for rotating a rotary spool can be additionally set.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1989072237U JPH0748761Y2 (en) | 1989-06-19 | 1989-06-19 | Hydraulic excavator operating device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1989072237U JPH0748761Y2 (en) | 1989-06-19 | 1989-06-19 | Hydraulic excavator operating device |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH0312949U true JPH0312949U (en) | 1991-02-08 |
| JPH0748761Y2 JPH0748761Y2 (en) | 1995-11-08 |
Family
ID=31610000
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP1989072237U Expired - Fee Related JPH0748761Y2 (en) | 1989-06-19 | 1989-06-19 | Hydraulic excavator operating device |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0748761Y2 (en) |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS633586U (en) * | 1986-06-24 | 1988-01-11 | ||
| JPS63135004U (en) * | 1987-02-26 | 1988-09-05 |
-
1989
- 1989-06-19 JP JP1989072237U patent/JPH0748761Y2/en not_active Expired - Fee Related
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS633586U (en) * | 1986-06-24 | 1988-01-11 | ||
| JPS63135004U (en) * | 1987-02-26 | 1988-09-05 |
Also Published As
| Publication number | Publication date |
|---|---|
| JPH0748761Y2 (en) | 1995-11-08 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| LAPS | Cancellation because of no payment of annual fees |