JPS6022284U - Hydraulic breaker dry firing prevention device - Google Patents
Hydraulic breaker dry firing prevention deviceInfo
- Publication number
- JPS6022284U JPS6022284U JP11426783U JP11426783U JPS6022284U JP S6022284 U JPS6022284 U JP S6022284U JP 11426783 U JP11426783 U JP 11426783U JP 11426783 U JP11426783 U JP 11426783U JP S6022284 U JPS6022284 U JP S6022284U
- Authority
- JP
- Japan
- Prior art keywords
- hydraulic breaker
- dry firing
- prevention device
- piston
- firing prevention
- 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
- Percussive Tools And Related Accessories (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図は従来の油圧ブレーカの構成図、第２図ないし第
７図は本考案の一実施例であり、第２図は油圧ショベル
のアームに油圧ブレーカを装着した状態を示す側面図、
第３図はその正面図、第４図は斜め打ちの説明図、第５
図、第６図はそれぞれチゼルが上昇位置、下降位置にあ
る状態を示すブレーカの断面図、第７図は油圧回路図で
ある。
１′・・・油圧ブレーカ、３・・・ピストン、５・・・
チゼル、２０・・・ピストン下室、２１・・・ピストン
上室、２８・・・揺動形アクチュエータ、３２・・・空
打ち防止−回路、３４・・・パイロット回路、３５・・
・操作弁、３６．３７・・・作動油給排管路、３８・・
・切換弁、３９・・・可変絞り弁。Fig. 1 is a configuration diagram of a conventional hydraulic breaker, Figs. 2 to 7 are an embodiment of the present invention, and Fig. 2 is a side view showing the state in which the hydraulic breaker is attached to the arm of a hydraulic excavator.
Figure 3 is the front view, Figure 4 is an explanatory diagram of diagonal striking, and Figure 5 is the front view.
Figures 6 and 6 are cross-sectional views of the breaker showing the chisel in the raised position and lowered position, respectively, and Figure 7 is a hydraulic circuit diagram. 1'... Hydraulic breaker, 3... Piston, 5...
Chisel, 20... Piston lower chamber, 21... Piston upper chamber, 28... Rocking type actuator, 32... Dry firing prevention circuit, 34... Pilot circuit, 35...
・Operation valve, 36. 37... Hydraulic oil supply and discharge pipe, 38...
・Switching valve, 39...variable throttle valve.
Claims (1)
持する構造を有すると共に、チゼルが下降した位置にあ
る場合にピストンの下降によりピストン下室とピストン
上室とを連通させて空打ちを防止する回路を有し、かつ
チゼルが下降位置にあるときに前記揺動形アクチュエー
タの保持力を低下させる弁装置を有する管路を前記揺動
形アクチュエータとその操作弁との間の２本の作動油給
排管路間に設けたことを特徴とする油圧ブレーカの空打
ち防止装置。。It has a structure that swingably supports the hydraulic breaker by a swinging actuator, and also has a circuit that prevents dry firing by communicating the piston lower chamber and the piston upper chamber by lowering the piston when the chisel is in the lowered position. and a pipe line having a valve device that reduces the holding force of the swinging actuator when the chisel is in the lowered position is connected to two hydraulic oil supply and drain lines between the swinging actuator and its operating valve. A hydraulic breaker dry firing prevention device characterized by being installed between pipes. .
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP11426783U JPS6022284U (en) | 1983-07-25 | 1983-07-25 | Hydraulic breaker dry firing prevention device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP11426783U JPS6022284U (en) | 1983-07-25 | 1983-07-25 | Hydraulic breaker dry firing prevention device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS6022284U true JPS6022284U (en) | 1985-02-15 |
Family
ID=30264201
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP11426783U Pending JPS6022284U (en) | 1983-07-25 | 1983-07-25 | Hydraulic breaker dry firing prevention device |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS6022284U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2019127796A (en) * | 2018-01-26 | 2019-08-01 | 株式会社小松製作所 | Work machine and method for controlling work machine |
-
1983
- 1983-07-25 JP JP11426783U patent/JPS6022284U/en active Pending
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2019127796A (en) * | 2018-01-26 | 2019-08-01 | 株式会社小松製作所 | Work machine and method for controlling work machine |
| WO2019146570A1 (en) * | 2018-01-26 | 2019-08-01 | 株式会社小松製作所 | Work machine and method for controlling same |
| US11453997B2 (en) | 2018-01-26 | 2022-09-27 | Komatsu Ltd. | Work machine and method for controlling the same |
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