JPS58128890U - Hydraulic hammer hydraulic circuit - Google Patents
Hydraulic hammer hydraulic circuitInfo
- Publication number
- JPS58128890U JPS58128890U JP2580182U JP2580182U JPS58128890U JP S58128890 U JPS58128890 U JP S58128890U JP 2580182 U JP2580182 U JP 2580182U JP 2580182 U JP2580182 U JP 2580182U JP S58128890 U JPS58128890 U JP S58128890U
- Authority
- JP
- Japan
- Prior art keywords
- hydraulic
- side pipe
- suction side
- pump
- 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
Landscapes
- Fluid-Pressure Circuits (AREA)
- 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図は従来の油圧ハンマの油圧回路を示す図、第２図
は本考案の一実施例を示す油圧回路図である。
１・・・油圧ハンマ、２・・・メインポンプ、３・・・
切換弁、４・・・ブーストポンプ、５・・・リリーフ弁
、７・・・ラム、１１・・・吐出側管路、１２・・・吸
込側管路、１３．１４・・・管路、１７・・・チェック
弁、１８・・・アキュムレータ。FIG. 1 is a diagram showing a hydraulic circuit of a conventional hydraulic hammer, and FIG. 2 is a hydraulic circuit diagram showing an embodiment of the present invention. 1... Hydraulic hammer, 2... Main pump, 3...
Switching valve, 4... Boost pump, 5... Relief valve, 7... Ram, 11... Discharge side pipe line, 12... Suction side pipe line, 13.14... Pipe line, 17...Check valve, 18...Accumulator.
Claims (1)
のメインポンプと、２つの一次側ポートがそれぞれ前記
油圧ポンプの吐出側管路と吸込側管路に接続されると共
に、２つの二次側ポートがそれぞれ前記油圧シリンダの
ヘッド室とロンド室に管路により接続され、かつラムの
自由落下時ににはヘッド室とロンド室にそれぞれ接続さ
れる管路を短絡させる切換弁と、吐出側ポートを前記吸
込側管路に接続した前記メインポンプのキャビテーショ
ン防止用ブーストポンプと、該吸込側管路と油タンクと
の間に設けられたリリーフ弁とを備えた油圧ハンマの油
圧回線において、前記吸込側管路に前記ブーストポンプ
の吐出油が前記切換弁へ逆流することを防止するチェッ
ク弁を設けると共に、該チェック弁と前記メインポンプ
との間の管路にアキュムレータを設けたことを特徴とす
る油圧ハンマの油圧回路。A hydraulic cylinder for lifting a ram, a main pump for driving the hydraulic cylinder, two primary side ports connected to a discharge side pipe line and a suction side pipe line of the hydraulic pump, respectively, and two secondary side ports. are respectively connected to the head chamber and the rond chamber of the hydraulic cylinder by pipes, and a switching valve that short-circuits the ducts connected to the head chamber and the rond chamber, respectively, when the ram falls freely; In the hydraulic line of the hydraulic hammer, which includes a boost pump for preventing cavitation of the main pump connected to the suction side pipe, and a relief valve provided between the suction side pipe and the oil tank, the suction side pipe A hydraulic hammer characterized in that a check valve is provided in the passageway to prevent oil discharged from the boost pump from flowing back to the switching valve, and an accumulator is provided in the pipeline between the check valve and the main pump. hydraulic circuit.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2580182U JPS58128890U (en) | 1982-02-26 | 1982-02-26 | Hydraulic hammer hydraulic circuit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2580182U JPS58128890U (en) | 1982-02-26 | 1982-02-26 | Hydraulic hammer hydraulic circuit |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS58128890U true JPS58128890U (en) | 1983-08-31 |
Family
ID=30037764
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP2580182U Pending JPS58128890U (en) | 1982-02-26 | 1982-02-26 | Hydraulic hammer hydraulic circuit |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS58128890U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2010052777A1 (en) * | 2008-11-06 | 2010-05-14 | 三菱重工業株式会社 | Ship steering device |
-
1982
- 1982-02-26 JP JP2580182U patent/JPS58128890U/en active Pending
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2010052777A1 (en) * | 2008-11-06 | 2010-05-14 | 三菱重工業株式会社 | Ship steering device |
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