JPS59183375U - Hydraulic breaker dry firing prevention mechanism - Google Patents

Hydraulic breaker dry firing prevention mechanism

Info

Publication number
JPS59183375U
JPS59183375U JP7242983U JP7242983U JPS59183375U JP S59183375 U JPS59183375 U JP S59183375U JP 7242983 U JP7242983 U JP 7242983U JP 7242983 U JP7242983 U JP 7242983U JP S59183375 U JPS59183375 U JP S59183375U
Authority
JP
Japan
Prior art keywords
hydraulic breaker
prevention mechanism
dry firing
firing prevention
hydraulic oil
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
Application number
JP7242983U
Other languages
Japanese (ja)
Inventor
宇「野」　正晃
Original Assignee
日立建機株式会社
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by 日立建機株式会社 filed Critical 日立建機株式会社
Priority to JP7242983U priority Critical patent/JPS59183375U/en
Publication of JPS59183375U publication Critical patent/JPS59183375U/en
Pending legal-status Critical Current

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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

【図面の簡単な説明】[Brief explanation of drawings]

第１図は従来の油圧ブレーカをピストン上昇工程につい
て示す構成図、第２図は同じく打撃工程について示す構
成図、第３図および第４図はそれぞれ本考案の一実施例
を第１、第２図に対応して描いた構成図である。　　　
　− １・・・油圧ブレーカ、１ａ・・・本体、３・・・ピス
トン、４・・・ピストン下室、１４・・・チゼル、１８
・・・リンク、１９・・・絞り弁、２０・・・ばね。 ゛　　　　　１　ト１４ ハｌ　　＋” １／ＸFig. 1 is a block diagram showing a conventional hydraulic breaker in the piston raising process, Fig. 2 is a block diagram showing the same in the striking process, and Figs. 3 and 4 show the first and second embodiments of the present invention, respectively. It is a block diagram drawn corresponding to the figure.
- 1... Hydraulic breaker, 1a... Main body, 3... Piston, 4... Piston lower chamber, 14... Chisel, 18
...link, 19...throttle valve, 20...spring.゛ 1 t14 ha +” 1/X

Claims (1)

【実用新案登録請求の範囲】[Scope of utility model registration request] 打撃工程時にピストン下室より作動油を排出す□　　　
　る回路に、チゼルが下降した位置にある時に該回路を
絞を弁、または排出される作動油の流れを止める止弁を
設けてなる油圧ブレーカの空打ち防止機構。Drain hydraulic oil from the lower chamber of the piston during the impact process□
A mechanism for preventing dry firing of a hydraulic breaker, which is provided with a stop valve that throttles the circuit or stops the flow of discharged hydraulic oil when the chisel is in the lowered position.
JP7242983U 1983-05-17 1983-05-17 Hydraulic breaker dry firing prevention mechanism Pending JPS59183375U (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP7242983U JPS59183375U (en) 1983-05-17 1983-05-17 Hydraulic breaker dry firing prevention mechanism

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP7242983U JPS59183375U (en) 1983-05-17 1983-05-17 Hydraulic breaker dry firing prevention mechanism

Publications (1)

Publication Number Publication Date
JPS59183375U true JPS59183375U (en) 1984-12-06

Family

ID=30202568

Family Applications (1)

Application Number Title Priority Date Filing Date
JP7242983U Pending JPS59183375U (en) 1983-05-17 1983-05-17 Hydraulic breaker dry firing prevention mechanism

Country Status (1)

Country Link
JP (1) JPS59183375U (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2014195845A (en) * 2013-03-29 2014-10-16 日立工機株式会社 Impact tool

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2014195845A (en) * 2013-03-29 2014-10-16 日立工機株式会社 Impact tool

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