JPS62159282U - - Google Patents
Info
- Publication number
- JPS62159282U JPS62159282U JP4636686U JP4636686U JPS62159282U JP S62159282 U JPS62159282 U JP S62159282U JP 4636686 U JP4636686 U JP 4636686U JP 4636686 U JP4636686 U JP 4636686U JP S62159282 U JPS62159282 U JP S62159282U
- Authority
- JP
- Japan
- Prior art keywords
- cylinder
- hydraulic
- hydraulic oil
- impact tool
- chamber
- 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 description 5
- 239000010727 cylinder oil Substances 0.000 claims description 2
- 230000007423 decrease Effects 0.000 claims 1
- 239000003921 oil Substances 0.000 description 2
- 230000002159 abnormal effect Effects 0.000 description 1
- 238000007664 blowing Methods 0.000 description 1
- 238000001514 detection method Methods 0.000 description 1
Landscapes
- Percussive Tools And Related Accessories (AREA)
Description
第１図は本考案の一実施例による油圧打撃工具
の正常作動時の断面図、第２図は同工具の正常で
ない作動時の断面図である。
１……打撃工具本体、２……シリンダ、２ａ…
…シリンダ前室（作動室）、２ｂ……シリンダ後
室（作動室）、３……打撃ピストン、７……前室
用給油路、８……後室用給油路、９……作動用バ
ルブ、１４……シリンダ排油路、１６……アキユ
ムレータ、１７……ダイヤフラム、１８……第１
室（ガス室）、１９……第２室（作動油が流出入
する室）、２１……通路開閉バルブ（バルブ手段
）、２４……パイロツト圧力検知路。
FIG. 1 is a sectional view of a hydraulic impact tool according to an embodiment of the present invention in normal operation, and FIG. 2 is a sectional view of the same tool in abnormal operation. 1... Impact tool body, 2... Cylinder, 2a...
...Cylinder front chamber (working chamber), 2b...Cylinder rear chamber (working chamber), 3...Blowing piston, 7...Front chamber oil supply path, 8...Rear chamber oil supply path, 9...Operating valve , 14...Cylinder oil drain path, 16...Accumulator, 17...Diaphragm, 18...First
chamber (gas chamber), 19... second chamber (chamber where hydraulic oil flows in and out), 21... passage opening/closing valve (valve means), 24... pilot pressure detection passage.
Claims (1)
リンダ内に摺動自在に嵌合された打撃ピストンと
、上記シリンダの作動室に作動油を給排通路を介
して給排して上記打撃ピストンを前後動可能にす
る作動用バルブと、作動油の供給通路に設けられ
、ガス室と作動油が流入する室とにダイヤフラム
により区画されたアキユムレータとを有した油圧
打撃工具において、上記シリンダの作動室への作
動油の給排通路に上記アキユムレータのガス室の
圧力を検知して開閉するバルブ手段を設け、この
バルブ手段は上記ガス室の圧力が低下したときに
上記給排通路を閉じるようにしたことを特徴とす
る油圧打撃工具。 A cylinder formed in the impact tool body, a impact piston slidably fitted into the cylinder, and hydraulic oil supplied to and discharged from the working chamber of the cylinder through a supply and discharge passage to move the impact piston back and forth. In the hydraulic impact tool, the hydraulic impact tool has an operating valve that enables the cylinder to move, and an accumulator that is provided in the hydraulic oil supply passage and is partitioned by a diaphragm into a gas chamber and a chamber into which the hydraulic oil flows. A valve means is provided in the hydraulic oil supply and discharge passageway to open and close by detecting the pressure in the gas chamber of the accumulator, and the valve means closes the supply and discharge passage when the pressure in the gas chamber decreases. Hydraulic impact tool featuring:
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP4636686U JPS62159282U (en) | 1986-03-28 | 1986-03-28 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP4636686U JPS62159282U (en) | 1986-03-28 | 1986-03-28 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS62159282U true JPS62159282U (en) | 1987-10-09 |
Family
ID=30865963
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP4636686U Pending JPS62159282U (en) | 1986-03-28 | 1986-03-28 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS62159282U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0947293A2 (en) * | 1998-03-30 | 1999-10-06 | Sandvik Tamrock Oy | Hydraulically operated impact device |
-
1986
- 1986-03-28 JP JP4636686U patent/JPS62159282U/ja active Pending
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0947293A2 (en) * | 1998-03-30 | 1999-10-06 | Sandvik Tamrock Oy | Hydraulically operated impact device |
| EP0947293B1 (en) * | 1998-03-30 | 2004-10-27 | Sandvik Tamrock Oy | Hydraulically operated impact device |
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