JPS59122401U - Protection circuit of hydraulic cylinder cushioning device - Google Patents
Protection circuit of hydraulic cylinder cushioning deviceInfo
- Publication number
- JPS59122401U JPS59122401U JP1582383U JP1582383U JPS59122401U JP S59122401 U JPS59122401 U JP S59122401U JP 1582383 U JP1582383 U JP 1582383U JP 1582383 U JP1582383 U JP 1582383U JP S59122401 U JPS59122401 U JP S59122401U
- Authority
- JP
- Japan
- Prior art keywords
- hydraulic cylinder
- hydraulic
- circuit
- cushioning device
- protection circuit
- 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) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.
Description
第１図はクッション装置を有する油圧シリンダの縦断面
図、第２図は第１図の部分拡大縦断面図、第３図はこの
考案の油圧シリンダのクッション装置の保護回路の油圧
回路図、第４図はこの考案の油圧シリンダのクッション
装置の保護回路におけるクッションバルブの一実施例の
縦断面図、第５図はこの考案の油圧シリンダのクッショ
ン装置の保護回路におけるクッションバルブの他の実施
例の縦断面図をそれぞれ示す。
２・・・油圧シリンダ、３．１０・・・シリンダ室、４
・・・ピストン、６．１１・・・油日、１２．１３・・
・油圧回Ｌ１７・・・クッションバルブ、１７ｂ、１７
Ｃ・・・切換位置、１８・・・油圧バイパス回路。
２
孕 ６ ／
フFIG. 1 is a vertical sectional view of a hydraulic cylinder having a cushion device, FIG. 2 is a partially enlarged vertical sectional view of FIG. Fig. 4 is a longitudinal sectional view of one embodiment of the cushion valve in the protection circuit of the cushion device of the hydraulic cylinder of this invention, and Fig. 5 is a longitudinal sectional view of another embodiment of the cushion valve in the protection circuit of the cushion device of the hydraulic cylinder of this invention. A vertical cross-sectional view is shown in each case. 2... Hydraulic cylinder, 3.10... Cylinder chamber, 4
... Piston, 6.11... Oil day, 12.13...
・Hydraulic circuit L17...Cushion valve, 17b, 17
C...Switching position, 18...Hydraulic bypass circuit. 2 pregnant 6 / fu
Claims (1)
ークの最終端に達するまでの間、ピストンの移動方向側
のシリンダ室内から油日へ排出する油の流量を制限する
ことにより、ピストンにクッション作用を与えるように
したクッション装置を有する油圧シリンダにおいて、ク
ッション作用時に圧油を供給する側の油圧回路と油を排
出する側の油圧回路との間を、クッション装置を設けた
側のシリンダ室内の油圧をパイロット圧力とするクッシ
ョンバルブを設けたバイパス回路で接続し、このクッシ
ョンバルブを、パイロット圧力が設定値以下の場合には
バイパス回路を遮断する切換位置及びパイロット圧力が
設定値を超えるとバイパス回路を連通ずる切換位置を備
えた構成とした油圧シリンダのクッション装置の保護回
路。When the piston reaches near the end of its stroke, until it reaches the final end of its stroke, it provides a cushioning effect to the piston by restricting the flow rate of oil discharged from the cylinder chamber on the side in the direction of piston movement. In a hydraulic cylinder having a cushioning device, the hydraulic pressure in the cylinder chamber on the side where the cushioning device is provided is set to pilot pressure between the hydraulic circuit on the side that supplies pressure oil and the hydraulic circuit on the side that discharges oil during the cushioning action. The cushion valve is connected to a bypass circuit equipped with a cushion valve, and this cushion valve is set to a switching position that cuts off the bypass circuit when the pilot pressure is below a set value, and a switching position that opens the bypass circuit when the pilot pressure exceeds the set value. A protection circuit for a cushion device of a hydraulic cylinder configured with a position.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1582383U JPS59122401U (en) | 1983-02-04 | 1983-02-04 | Protection circuit of hydraulic cylinder cushioning device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1582383U JPS59122401U (en) | 1983-02-04 | 1983-02-04 | Protection circuit of hydraulic cylinder cushioning device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS59122401U true JPS59122401U (en) | 1984-08-17 |
Family
ID=30147133
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP1582383U Pending JPS59122401U (en) | 1983-02-04 | 1983-02-04 | Protection circuit of hydraulic cylinder cushioning device |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS59122401U (en) |
-
1983
- 1983-02-04 JP JP1582383U patent/JPS59122401U/en active Pending
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