JPS6036995U - 2-speed motor switching hydraulic circuit - Google Patents
2-speed motor switching hydraulic circuitInfo
- Publication number
- JPS6036995U JPS6036995U JP12902883U JP12902883U JPS6036995U JP S6036995 U JPS6036995 U JP S6036995U JP 12902883 U JP12902883 U JP 12902883U JP 12902883 U JP12902883 U JP 12902883U JP S6036995 U JPS6036995 U JP S6036995U
- Authority
- JP
- Japan
- Prior art keywords
- switching
- oil
- cylinder
- pilot
- 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
Landscapes
- Fluid-Pressure Circuits (AREA)
Abstract
(57)【要約】本公報は電子出願前の出願データであるた
め要約のデータは記録されません。(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.
Description
第1図は従来の、第2図は本考案に係る2速モータの切
換油圧回路である。
3〜8・・・油路切換弁、10・・・センターバイパス
通路、11・・・平行圧力通路、12・・・排油通路、
14・・・油圧モータ、15・・・油圧モータ高低速切
換部材、16・・・スプリング、17・・・シリンダ、
19・・・シーケンス弁、20・・・チェック弁、22
・・・アキュームレータ、23.28・・・切換弁、2
4・・・パイロットオペレーテイドチェック弁、25・
・・給排管路、27・・・パイロット管路。FIG. 1 shows a conventional switching hydraulic circuit, and FIG. 2 shows a switching hydraulic circuit for a two-speed motor according to the present invention. 3-8... Oil passage switching valve, 10... Center bypass passage, 11... Parallel pressure passage, 12... Oil drain passage,
14... Hydraulic motor, 15... Hydraulic motor high/low speed switching member, 16... Spring, 17... Cylinder,
19...Sequence valve, 20...Check valve, 22
...Accumulator, 23.28...Switching valve, 2
4... Pilot operated check valve, 25.
... Supply and discharge pipe line, 27... Pilot pipe line.
Claims (1)
タ14の高低速切換用の切換部材15、圧油が作用した
際に前記スプリング16に抗して前記切換部材15を作
動させるシリンダ17、このシリンダ17への油の流れ
は許容しその逆流は阻止するもパイロット圧により作動
してその逆流を許容するよう構成されるパイロットオペ
レーテイドチェック弁24、シリンダ17とパイロット
オペレーテイドチェック弁24とを接続する管路26、
前記パイロットオペレーテイドチェック弁28に接続さ
れる給排管路25及びパイロット管路27とを有し、こ
の給排管路25及びパイロット管路27を切換弁28に
より給油側及び排油側又はこの逆に切換えて前記シリン
ダ17への圧油を給排し、これにより前記切換部材15
を作動させるよう構成した2速モータの切換油圧回路で
あって、前記切換弁28の給油ポート28bは、中立位
置にてセンターバイパスしてポンプからの圧油をタンク
側に戻すよう構成される油路切換弁3・・・8を並列に
接続した切換弁集合体の平行圧力通路11に接続されて
おり、かつこの切換弁は前記油路切換弁3・・・8から
センターバイパスされる圧油を常にタンク側に戻すよう
接続されていることを特徴とする2速モータの切換油圧
回路。A switching member 15 for switching between high and low speeds of the hydraulic motor 14 that is always biased in one direction by a spring 16, a cylinder 17 that operates the switching member 15 against the spring 16 when pressure oil is applied, and this cylinder. A pilot operated check valve 24 is configured to allow the flow of oil into the cylinder 17 and prevent its reverse flow, but is actuated by pilot pressure to allow the reverse flow, and connects the cylinder 17 and the pilot operated check valve 24. conduit 26,
It has a supply/discharge pipe 25 and a pilot pipe 27 that are connected to the pilot operated check valve 28, and the supply/discharge pipe 25 and the pilot pipe 27 are connected to the oil supply side, oil discharge side, or this side by a switching valve 28. Conversely, the pressure oil is supplied to and discharged from the cylinder 17 by switching the switching member 15.
The oil supply port 28b of the switching valve 28 is configured to bypass the center at a neutral position and return pressure oil from the pump to the tank side. The switching valve is connected to the parallel pressure passage 11 of the switching valve assembly in which the switching valves 3...8 are connected in parallel, and this switching valve receives pressure oil that is bypassed in the center from the switching valves 3...8. A switching hydraulic circuit for a two-speed motor, characterized in that the circuit is connected so as to always return the motor to the tank side.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP12902883U JPS6036995U (en) | 1983-08-20 | 1983-08-20 | 2-speed motor switching hydraulic circuit |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP12902883U JPS6036995U (en) | 1983-08-20 | 1983-08-20 | 2-speed motor switching hydraulic circuit |
Publications (2)
Publication Number | Publication Date |
---|---|
JPS6036995U true JPS6036995U (en) | 1985-03-14 |
JPS6326395Y2 JPS6326395Y2 (en) | 1988-07-18 |
Family
ID=30292495
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP12902883U Granted JPS6036995U (en) | 1983-08-20 | 1983-08-20 | 2-speed motor switching hydraulic circuit |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS6036995U (en) |
-
1983
- 1983-08-20 JP JP12902883U patent/JPS6036995U/en active Granted
Also Published As
Publication number | Publication date |
---|---|
JPS6326395Y2 (en) | 1988-07-18 |
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