JPS58140293U - drifter - Google Patents
drifterInfo
- Publication number
- JPS58140293U JPS58140293U JP3201482U JP3201482U JPS58140293U JP S58140293 U JPS58140293 U JP S58140293U JP 3201482 U JP3201482 U JP 3201482U JP 3201482 U JP3201482 U JP 3201482U JP S58140293 U JPS58140293 U JP S58140293U
- Authority
- JP
- Japan
- Prior art keywords
- plunger
- drifter
- switching
- cylinder
- small diameter
- 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
Landscapes
- Earth Drilling (AREA)
- Drilling And Exploitation, And Mining Machines And Methods (AREA)
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図は従来の切換えバルブの説明図、第２図はこの考
案の一実施例を示すドリフタの断面図、第３図は切換え
バノーブ部分の断面図である。
１はシリンダ、２は打撃ピストン、２ｂは小径部、３は
シャンクロッド、４はブツシュ、４□ないし４３はポー
ト、５はピストン前室、６はピストン後室、７は切換え
バルブ、７ｅはダンパ室、８はプランジャ、８Ｃはダン
パ部、９及び１０はプラグ。FIG. 1 is an explanatory diagram of a conventional switching valve, FIG. 2 is a sectional view of a drifter showing an embodiment of this invention, and FIG. 3 is a sectional view of a switching vanobe portion. 1 is a cylinder, 2 is a striking piston, 2b is a small diameter part, 3 is a shank rod, 4 is a bush, 4□ to 43 are ports, 5 is a piston front chamber, 6 is a piston rear chamber, 7 is a switching valve, 7e is a damper 8 is a plunger, 8C is a damper part, 9 and 10 are plugs.
Claims (1)
ート４１ないし４３を切換えて作動圧を得、この作動圧
により液圧ポンプとシリンダ１のピストン前後室５．６
の間に介在させた切換えバルブ７のプランジャ８を切換
え動作することにより、上記打撃ピストン２を往復動さ
せて、シリンダ１先端のシャンクロッド３を打撃するも
のにおいて、上記切換えバルブ７を単一のプランジャ８
と、該プランジャ８の両端に形成した受圧面積の異なる
小径部８□、８３を摺動自在に収容したプラグ９゜１０
により構成すると共に、上記プランジャ８の一端側に、
ダイパ室７ｅ内へ油を封止することによりプランジャ８
を緩速停止するダンパ部８Ｃを設けてなるドリフタ。The small diameter portion 2b provided on the striking piston 2 switches the ports 41 to 43 of the bushing to obtain operating pressure, and this operating pressure causes the hydraulic pump and the piston front and rear chambers 5,6 of the cylinder 1 to be connected.
In a device that reciprocates the striking piston 2 and strikes the shank rod 3 at the tip of the cylinder 1 by switching the plunger 8 of the switching valve 7 interposed between the switching valves 7 and 7, the switching valve 7 is Plunger 8
and a plug 9゜10 which slidably accommodates small diameter portions 8□ and 83 having different pressure receiving areas formed at both ends of the plunger 8.
At the same time, on one end side of the plunger 8,
By sealing oil into the dipper chamber 7e, the plunger 8
A drifter provided with a damper section 8C that slowly stops the drifter.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP3201482U JPS58140293U (en) | 1982-03-09 | 1982-03-09 | drifter |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP3201482U JPS58140293U (en) | 1982-03-09 | 1982-03-09 | drifter |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS58140293U true JPS58140293U (en) | 1983-09-21 |
Family
ID=30043651
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP3201482U Pending JPS58140293U (en) | 1982-03-09 | 1982-03-09 | drifter |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS58140293U (en) |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS50144968A (en) * | 1974-04-25 | 1975-11-21 | ||
| JPS5123402A (en) * | 1974-03-19 | 1976-02-25 | Kiirabaito Haidoroorikusu Ltd |
-
1982
- 1982-03-09 JP JP3201482U patent/JPS58140293U/en active Pending
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5123402A (en) * | 1974-03-19 | 1976-02-25 | Kiirabaito Haidoroorikusu Ltd | |
| JPS50144968A (en) * | 1974-04-25 | 1975-11-21 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| JPS59175615U (en) | Hydraulic lifter for variable cylinders | |
| JPS58140293U (en) | drifter | |
| JPS58185688U (en) | Crawler drill drifter device | |
| JPS6021007U (en) | Hydraulic cylinder stroke end shock absorber | |
| JPS6123389U (en) | Variable stroke mechanism of hydraulic impact device | |
| JPS60103737U (en) | Liquid lock type shock absorber | |
| JPS5853976U (en) | Solenoid valve for hydraulic circuit switching | |
| JPS5917304U (en) | hydraulic locking device | |
| JPS6397473U (en) | ||
| JPS5897332U (en) | Hydraulic shock absorber damping force adjustment mechanism | |
| JPS58123938U (en) | Hydraulic shock absorber damping force adjustment mechanism | |
| JPS60130293U (en) | hydraulic jack | |
| JPS5832003U (en) | Stroke sensitive shock absorber | |
| JPS58144040U (en) | Compression ratio variable device for internal combustion engines | |
| JPS5986467U (en) | cylinder device | |
| JPS59124077U (en) | Hydraulic striking device with dry striking prevention mechanism | |
| JPS5915802U (en) | Double-acting hydraulic cylinder with built-in pressure control valve | |
| JPH01132833U (en) | ||
| JPS614004U (en) | double acting hand pump | |
| JPS60134905U (en) | Abnormal surge pressure prevention valve | |
| JPS58125752U (en) | Hydraulic shock absorber with temperature compensation function | |
| JPS5892537U (en) | Damping force adjustable hydraulic shock absorber | |
| JPS60173678U (en) | Manual pump for charging and exhausting | |
| JPS6022282U (en) | air hammer | |
| JPS5924491U (en) | striking device |