JPS62174885U - - Google Patents
Info
- Publication number
- JPS62174885U JPS62174885U JP6168986U JP6168986U JPS62174885U JP S62174885 U JPS62174885 U JP S62174885U JP 6168986 U JP6168986 U JP 6168986U JP 6168986 U JP6168986 U JP 6168986U JP S62174885 U JPS62174885 U JP S62174885U
- Authority
- JP
- Japan
- Prior art keywords
- hydraulic oil
- valve
- cylinder
- chamber
- supplies
- 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
- 239000010720 hydraulic oil Substances 0.000 claims 5
Landscapes
- Percussive Tools And Related Accessories (AREA)
Description
第１図は本考案に係る油圧打撃工具におけるバ
ルブが開いてピストンが後退した状態を示す断面
図、第２図は第１図の状態からピストンが前進し
バルブが閉じた状態を示す断面図である。
１…シリンダー、２…ピストン、３…チゼル、
４…ピストン前室、５…バルブ切換えパイロツト
室、６…バルブリターン室、７…ピストン後室、
８…バルブ、９…バルブ切換室、１８…スプール
弁。
FIG. 1 is a cross-sectional view showing a state in which the valve is open and the piston is retracted in the hydraulic impact tool according to the present invention, and FIG. 2 is a cross-sectional view showing the state in which the piston advances from the state shown in FIG. 1 and the valve is closed. be. 1...Cylinder, 2...Piston, 3...Chisel,
4...Piston front chamber, 5...Valve switching pilot chamber, 6...Valve return chamber, 7...Piston rear chamber,
8... Valve, 9... Valve switching chamber, 18... Spool valve.
Claims (1)
ンダ内に摺動自在に収容された打撃ピストンと、
該シリンダの作動室に作動油を給排して該打撃ピ
ストンを前後動可能にするバルブと、該バルブを
介して該作動室へ作動油を供給する作動油供給系
と、該バルブが該作動室を閉じた時に生じる該作
動油供給系の圧力上昇を検知して作動油をバルブ
室内のバルブ閉鎖駆動側へ供給するように切換え
る制御弁とを備えてなることを特徴とする油圧打
撃工具。 a cylinder provided in the impact tool body; an impact piston slidably housed within the cylinder;
a valve that supplies and discharges hydraulic oil to and from the working chamber of the cylinder to enable the striking piston to move back and forth; a hydraulic oil supply system that supplies hydraulic oil to the working chamber via the valve; A hydraulic impact tool comprising: a control valve that detects a pressure increase in the hydraulic oil supply system that occurs when the chamber is closed and switches to supply hydraulic oil to the valve closing drive side in the valve chamber.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP6168986U JPS62174885U (en) | 1986-04-25 | 1986-04-25 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP6168986U JPS62174885U (en) | 1986-04-25 | 1986-04-25 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS62174885U true JPS62174885U (en) | 1987-11-06 |
Family
ID=30895262
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP6168986U Pending JPS62174885U (en) | 1986-04-25 | 1986-04-25 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS62174885U (en) |
-
1986
- 1986-04-25 JP JP6168986U patent/JPS62174885U/ja active Pending
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