JPS6425504U - - Google Patents
Info
- Publication number
- JPS6425504U JPS6425504U JP12111887U JP12111887U JPS6425504U JP S6425504 U JPS6425504 U JP S6425504U JP 12111887 U JP12111887 U JP 12111887U JP 12111887 U JP12111887 U JP 12111887U JP S6425504 U JPS6425504 U JP S6425504U
- Authority
- JP
- Japan
- Prior art keywords
- valve
- utility
- model registration
- signal output
- signal
- 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
- 238000000605 extraction Methods 0.000 claims 1
- 238000010586 diagram Methods 0.000 description 4
Description
第１図は本願考案の第１の実施例を示す油圧回
路図、第２図は第２の実施例を示す油圧回路図、
第３図は切換弁の移動量と発生圧力の関係を説明
する図、第４図は第３の実施例を示す油圧回路図
、第５図は絞りを内蔵した開閉弁の断面概略図で
ある。
１，２……主ポンプ、３〜６……切換弁、７，
８……圧力発生部材、１３・１４……開閉弁、１
５……パイロツトポンプ、１６……信号取出し口
、１８……絞り。
FIG. 1 is a hydraulic circuit diagram showing a first embodiment of the present invention, FIG. 2 is a hydraulic circuit diagram showing a second embodiment,
Fig. 3 is a diagram explaining the relationship between the amount of movement of the switching valve and the generated pressure, Fig. 4 is a hydraulic circuit diagram showing a third embodiment, and Fig. 5 is a schematic cross-sectional view of an on-off valve with a built-in throttle. . 1, 2...Main pump, 3-6...Switching valve, 7,
8...Pressure generating member, 13/14...Opening/closing valve, 1
5... Pilot pump, 16... Signal outlet, 18... Throttle.
Claims (1)
型多連制御弁を介してアクチユエータを接続した
油圧回路において、パイロツトポンプと信号取出
し口の間を連通・遮断すべく介在しそれぞれの主
ポンプと対をなしてパラレルに接続され主ポンプ
の圧力に応じて連通する複数の開閉弁と、少くと
も該弁の遮断時には信号取出口をタンクへ接続す
る絞りとからなる信号取出し回路。 (2) センタバイパス型多連制御弁の下流に圧力
発生部材を有し、開閉弁が主ポンプと圧力発生部
材入口との圧力差に応じて連通することを特徴と
する実用新案登録請求の範囲第１項記載の信号取
出し回路。 (3) 信号取出口をタンクへ接続する絞りが開閉
弁のスプールに設けられ、スプールの移動に応じ
て遮断することを特徴とする実用新案登録第１項
または第２項記載の信号取出し回路。[Scope of Claim for Utility Model Registration] (1) In a hydraulic circuit in which an actuator is connected to a plurality of main pumps through center bypass type multiple control valves, an intervening device is provided to communicate and cut off the pilot pump and the signal output port. A signal output device consisting of a plurality of on-off valves connected in parallel in pairs with each main pump and communicated according to the pressure of the main pump, and a throttle that connects the signal output port to the tank at least when the valve is shut off. circuit. (2) The scope of the utility model registration claim, which is characterized in that a pressure generating member is provided downstream of the center bypass type multiple control valve, and the opening/closing valve communicates depending on the pressure difference between the main pump and the inlet of the pressure generating member. The signal extraction circuit described in item 1. (3) The signal take-out circuit according to paragraph 1 or 2 of the utility model registration, characterized in that a throttle connecting the signal take-out port to the tank is provided on the spool of the on-off valve and shuts off according to movement of the spool.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1987121118U JPH0636321Y2 (en) | 1987-08-07 | 1987-08-07 | Signal extraction circuit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1987121118U JPH0636321Y2 (en) | 1987-08-07 | 1987-08-07 | Signal extraction circuit |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS6425504U true JPS6425504U (en) | 1989-02-13 |
| JPH0636321Y2 JPH0636321Y2 (en) | 1994-09-21 |
Family
ID=31367835
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP1987121118U Expired - Lifetime JPH0636321Y2 (en) | 1987-08-07 | 1987-08-07 | Signal extraction circuit |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0636321Y2 (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2015206420A (en) * | 2014-04-21 | 2015-11-19 | 日立建機株式会社 | Hydraulic transmission of construction machine |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS599302A (en) * | 1982-07-05 | 1984-01-18 | Toshiba Mach Co Ltd | Hydraulic control device |
| JPS61181102U (en) * | 1985-04-30 | 1986-11-12 |
-
1987
- 1987-08-07 JP JP1987121118U patent/JPH0636321Y2/en not_active Expired - Lifetime
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS599302A (en) * | 1982-07-05 | 1984-01-18 | Toshiba Mach Co Ltd | Hydraulic control device |
| JPS61181102U (en) * | 1985-04-30 | 1986-11-12 |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2015206420A (en) * | 2014-04-21 | 2015-11-19 | 日立建機株式会社 | Hydraulic transmission of construction machine |
Also Published As
| Publication number | Publication date |
|---|---|
| JPH0636321Y2 (en) | 1994-09-21 |
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