JPS5911902U - hydraulic closed circuit - Google Patents
hydraulic closed circuitInfo
- Publication number
- JPS5911902U JPS5911902U JP10559082U JP10559082U JPS5911902U JP S5911902 U JPS5911902 U JP S5911902U JP 10559082 U JP10559082 U JP 10559082U JP 10559082 U JP10559082 U JP 10559082U JP S5911902 U JPS5911902 U JP S5911902U
- Authority
- JP
- Japan
- Prior art keywords
- circuit
- pressure circuit
- low pressure
- closed circuit
- high pressure
- 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
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) [Abstract] This bulletin contains application data before electronic filing, so abstract data is not recorded.
Description
第１図は従来の油圧閉回路の一例を示す回路図、第２図
及び第３図はそれぞれ第１図に示す従来の油Ｗ閉回路に
おける可変容量油圧ポイズとアクチュエータと舎連絡す
る管路の起動時、゛停止時の圧力特性を示す説明図、第
４図は本考案の油圧閉回路の一実施例を示す回路図、第
５図及び第６図はそれぞれ第４図に示す本考案の一実施
例における可変容量油圧ポンプとアクチュエータとを連
絡する管路の起動時、停止時の圧力特性を示す説明図
゛である。
１・・・可変容量油圧ポンプ、２・・・油圧シリンダ（
アクチュエータ）、３．４・・・Ｗ路、７．１２・・・
逆止弁、８・・・チャージポンプ、９・・・低圧回路、
１０・・・リリーフ弁、１１・・・タンク、１３・・・
高圧回路、１４・・・切換弁、１５・・・アキュムレー
タ（圧力貯留手段）、１６・・・衝撃緩衝装置。Fig. 1 is a circuit diagram showing an example of a conventional hydraulic closed circuit, and Figs. 2 and 3 show the variable capacity hydraulic poise and actuator in the conventional oil W closed circuit shown in Fig. FIG. 4 is a circuit diagram showing an embodiment of the hydraulic closed circuit of the present invention, and FIGS. 5 and 6 are diagrams showing the pressure characteristics at startup and stop. An explanatory diagram showing pressure characteristics when starting and stopping a pipe line connecting a variable displacement hydraulic pump and an actuator in one embodiment
It is. 1... Variable displacement hydraulic pump, 2... Hydraulic cylinder (
actuator), 3.4...W path, 7.12...
Check valve, 8...Charge pump, 9...Low pressure circuit,
10... Relief valve, 11... Tank, 13...
High pressure circuit, 14... switching valve, 15... accumulator (pressure storage means), 16... impact buffer device.
Claims (1)
可変容量油圧ポンプと、これらのアクチュエータと可変
容量油圧ポンプとを連絡する管路とによって閉回路を構
成するとともに、上記管路に逆止弁を介して連絡した低
圧回路と、この低圧回路に圧油を伏込するチャージポン
プとを備えた油圧閉回路において、上記管路に逆止弁を
介して連絡した高圧回路と、この高圧回路及び上記低圧
回路に選択的に接続される衝撃緩衝装置とを備え、上記
管路の圧力の大きさに相応して、上記高圧回路及び低圧
回路のいずれか一方が衝撃緩衝装置に連絡されることを
特徴とする油圧閉回路。 ２ 衝撃緩衝装置は、高圧回路及び低圧回路に接続され
る切換弁と、この切換弁に接続される圧力貯留手段とを
備え、上記切換弁の切換えによって高圧回路及び低圧回
路のいずれか一方が圧力貯留手段に連絡されることを特
徴とする実用新案登録請求の範囲第１項記載の油圧閉回
路。[Claims for Utility Model Registration] 1. A closed circuit is constituted by an actuator, a variable displacement hydraulic pump that drives the actuator, and a pipe connecting these actuators and the variable displacement hydraulic pump, and In a hydraulic closed circuit comprising a low pressure circuit connected via a check valve and a charge pump supplying pressure oil to the low pressure circuit, the high pressure circuit connected to the above pipe via the check valve, and the a shock absorber selectively connected to the high pressure circuit and the low pressure circuit; either one of the high pressure circuit or the low pressure circuit is connected to the shock absorber depending on the magnitude of the pressure in the pipeline; A hydraulic closed circuit characterized by: 2. The shock absorber is equipped with a switching valve connected to a high pressure circuit and a low pressure circuit, and a pressure storage means connected to the switching valve, and when the switching valve is switched, either the high pressure circuit or the low pressure circuit becomes under pressure. The hydraulic closed circuit according to claim 1, which is connected to a storage means.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP10559082U JPS5911902U (en) | 1982-07-14 | 1982-07-14 | hydraulic closed circuit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP10559082U JPS5911902U (en) | 1982-07-14 | 1982-07-14 | hydraulic closed circuit |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS5911902U true JPS5911902U (en) | 1984-01-25 |
Family
ID=30247426
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP10559082U Pending JPS5911902U (en) | 1982-07-14 | 1982-07-14 | hydraulic closed circuit |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS5911902U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US8204655B2 (en) | 2006-10-19 | 2012-06-19 | Hitachi Construction Machinery Co., Ltd. | Construction machine |
-
1982
- 1982-07-14 JP JP10559082U patent/JPS5911902U/en active Pending
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US8204655B2 (en) | 2006-10-19 | 2012-06-19 | Hitachi Construction Machinery Co., Ltd. | Construction machine |
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