JPS6168171U - - Google Patents
Info
- Publication number
- JPS6168171U JPS6168171U JP15173684U JP15173684U JPS6168171U JP S6168171 U JPS6168171 U JP S6168171U JP 15173684 U JP15173684 U JP 15173684U JP 15173684 U JP15173684 U JP 15173684U JP S6168171 U JPS6168171 U JP S6168171U
- Authority
- JP
- Japan
- Prior art keywords
- hydraulic pressure
- swing motor
- motor
- swing
- control valves
- 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
- 238000010586 diagram Methods 0.000 description 2
Landscapes
- Operation Control Of Excavators (AREA)
- Fluid-Pressure Circuits (AREA)
- Control Of Fluid Gearings (AREA)
Description
図面はこの考案の一実施例を示し、第１図は基
本油圧回路の回路図、第２図は制御系の回路図、
第３図は制御弁の詳細図、第４図イ，ロは作用説
明図、第５図は従来の説明図である。
１は可変ポンプ、４は旋回モータ、５は上部旋
回体、１２は操作レバー、１４は第１制御弁、１
５は第２制御弁、１９は固定ポンプ、２５はアキ
ユムレータ。
The drawings show one embodiment of this invention; Fig. 1 is a circuit diagram of the basic hydraulic circuit, Fig. 2 is a circuit diagram of the control system,
FIG. 3 is a detailed view of the control valve, FIGS. 4A and 4B are action explanatory views, and FIG. 5 is a conventional explanatory view. 1 is a variable pump, 4 is a swing motor, 5 is an upper rotating body, 12 is an operating lever, 14 is a first control valve, 1
5 is a second control valve, 19 is a fixed pump, and 25 is an accumulator.
Claims (1)
よりなる旋回モータ４へ供給して、該旋回モータ
４により上部旋回体５を旋回駆動すると共に、可
変ポンプ１及び旋回モータ４を接続する主回路の
途中に車体慣性エネルギを油圧として回収するア
キユムレータ２５を設けたものにおいて、上部旋
回体５の旋回を制御する操作レバ１２の操作量を
油圧に変換して、この油圧を第１、第２制御弁１
４，１５へパイロツト圧として導入し、また上記
旋回モータ４には、該モータ４の回転に比例した
油圧を吐出する固定ポンプ１９を連動させて、こ
の固定ポンプ１９より吐出された油圧を上記各制
御弁１４，１５へパイロツト圧として導入して、
このパイロツト圧と上記操作レバ１２からのパイ
ロツト圧により上記第１、第２制御弁１４，１５
を切換え制御すると共に、これら第１、第２制御
弁１４，１５より出力される油圧により旋回モー
タ４の斜板角を制御してなるパワーシヨベルにお
ける旋回モータの斜板制御装置。 The hydraulic pressure discharged from the variable pump 1 is supplied to the swing motor 4 made up of a variable motor, and the swing motor 4 drives the upper swing structure 5 to swing, and the main circuit connecting the variable pump 1 and the swing motor 4 is is equipped with an accumulator 25 that recovers vehicle body inertia energy as hydraulic pressure, converts the amount of operation of the operating lever 12 that controls the rotation of the upper rotating body 5 into hydraulic pressure, and applies this hydraulic pressure to the first and second control valves 1.
4 and 15 as pilot pressure, and the swing motor 4 is linked with a fixed pump 19 that discharges hydraulic pressure proportional to the rotation of the motor 4, and the hydraulic pressure discharged from the fixed pump 19 is introduced into each of the above Introducing it as pilot pressure to the control valves 14 and 15,
The first and second control valves 14 and 15 are controlled by this pilot pressure and the pilot pressure from the operating lever 12.
A swash plate control device for a swing motor in a power shovel, which switches and controls the angle of the swash plate of the swing motor 4 using hydraulic pressure output from the first and second control valves 14 and 15.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP15173684U JPS6168171U (en) | 1984-10-09 | 1984-10-09 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP15173684U JPS6168171U (en) | 1984-10-09 | 1984-10-09 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS6168171U true JPS6168171U (en) | 1986-05-10 |
Family
ID=30709834
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP15173684U Pending JPS6168171U (en) | 1984-10-09 | 1984-10-09 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS6168171U (en) |
-
1984
- 1984-10-09 JP JP15173684U patent/JPS6168171U/ja active Pending