JPS58176887U - Crane work equipment hydraulic circuit - Google Patents
Crane work equipment hydraulic circuitInfo
- Publication number
- JPS58176887U JPS58176887U JP7266882U JP7266882U JPS58176887U JP S58176887 U JPS58176887 U JP S58176887U JP 7266882 U JP7266882 U JP 7266882U JP 7266882 U JP7266882 U JP 7266882U JP S58176887 U JPS58176887 U JP S58176887U
- Authority
- JP
- Japan
- Prior art keywords
- switching valve
- circuit
- hoisting
- overload prevention
- hydraulic
- 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
- 230000002265 prevention Effects 0.000 claims description 5
- 238000011144 upstream manufacturing Methods 0.000 claims 1
- 238000010586 diagram Methods 0.000 description 1
Landscapes
- Jib Cranes (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図は伸縮ブームをそなえたクレーン作業機の一例を
示す側面図、第２図は第１図のクレーン作業機における
従来の油圧回路を示す系統図、第３図はこの考案による
油圧回路を示す系統図である。
２・・・・・・巻上用ウィンチ、３・・・・・・起伏シ
リンダ、３ａ・・・・・・ヘッド室、４・・・・・・ブ
ーム、７・・・・・・油圧ポンプ、８・・・・・・油タ
ンク、９・・・・・・リリーフ弁、１０・・・・・・起
伏シリンダ操作用切替弁、１２・・・・・・油圧モ。
−タ操作用切替弁、１３・・・・・・油圧モータ、１６
・・・・・・カウンタバランス弁、１７・・・・・・巻
上がわ回路、１８・・・・・・巻下がわ回路、１９・・
・・・・過負荷防止用切替弁、２０・・・・・・ばね、
２１・・・・・・管路、２２・−′・・・・パイロット
チェック弁、２３・・・・・・パイロット管路、２４・
・・・・・パイロット管路。Fig. 1 is a side view showing an example of a crane working machine equipped with a telescopic boom, Fig. 2 is a system diagram showing a conventional hydraulic circuit in the crane working machine shown in Fig. 1, and Fig. 3 is a hydraulic circuit according to this invention. FIG. 2...Hoisting winch, 3...Huffing cylinder, 3a...Head chamber, 4...Boom, 7...Hydraulic pump , 8...Oil tank, 9...Relief valve, 10...Luffing cylinder operation switching valve, 12...Hydraulic motor. - Hydraulic motor, 16
...Counter balance valve, 17...Hoisting side circuit, 18...Lowing side circuit, 19...
...overload prevention switching valve, 20...spring,
21... Pipe line, 22... Pilot check valve, 23... Pilot pipe line, 24...
...Pilot conduit.
Claims (1)
る起伏シリンダとをそれぞれ操作用切替弁を介して油圧
ポンプの吐出がわにつらねたクレーン作業機の油圧回路
において、油圧モータの巻がわ回路の操作用切替弁と吊
荷落下防止用カウンタバランス弁との間に、起伏シリン
ダのヘッド室がわの設定するべき圧力に対応するばねを
そなえた過負荷防止用切替弁を設け、起伏シリンダのヘ
ッダ室と過負荷防止用切替弁とをつらねた管路に、油圧
モータの巻上がわ回路の過負荷防止用切替弁より上流が
わにパイロット管路をつらねたパイロットチェック弁を
取付け、過負荷防止用切替弁をパイロット管路により油
圧モータの巻上げがわ回路につらねたこと番特徴とする
油圧回路。In the hydraulic circuit of a crane working machine, the hydraulic motor j that drives the hoisting winch and the hoisting cylinder that hoists the boom are connected to the discharge of the hydraulic pump via operation switching valves. An overload prevention switching valve equipped with a spring corresponding to the pressure to be set on the head chamber of the hoisting cylinder is installed between the circuit operation switching valve and the counterbalance valve for preventing suspended loads from falling. Install a pilot check valve with a pilot pipe connected upstream of the overload prevention switching valve in the hoisting circuit of the hydraulic motor to the pipe connecting the header chamber and the overload prevention switching valve. A hydraulic circuit characterized in that an overload prevention switching valve is connected to the hoisting circuit of the hydraulic motor via a pilot pipe.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP7266882U JPS58176887U (en) | 1982-05-18 | 1982-05-18 | Crane work equipment hydraulic circuit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP7266882U JPS58176887U (en) | 1982-05-18 | 1982-05-18 | Crane work equipment hydraulic circuit |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS58176887U true JPS58176887U (en) | 1983-11-26 |
Family
ID=30082226
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP7266882U Pending JPS58176887U (en) | 1982-05-18 | 1982-05-18 | Crane work equipment hydraulic circuit |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS58176887U (en) |
-
1982
- 1982-05-18 JP JP7266882U patent/JPS58176887U/en active Pending
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| US3815478A (en) | Pipelayer hydraulic drawworks with free-fall | |
| JPS58176887U (en) | Crane work equipment hydraulic circuit | |
| JPS58184489U (en) | Hydraulic circuit of crane work equipment | |
| JPS58176888U (en) | Crane work equipment hydraulic circuit | |
| JPS6096472U (en) | Front loader hydraulic control device | |
| JPS5938538Y2 (en) | Hydraulic circuit of backhoe with crane function | |
| JPS5848684U (en) | Hydraulic truck crane with tag line | |
| JPS5860691U (en) | Clutch device for hoisting winch of crane etc. | |
| JPS58120179U (en) | Hydraulic control system for multi-rope bucket crane | |
| JPS5899286U (en) | Hydraulic winch with free fall device | |
| SU867864A1 (en) | Hydraulic drive of load winch of self propelled boom crane | |
| JPS5834886U (en) | Control circuit for boom hoisting cylinder | |
| JPS641348Y2 (en) | ||
| JPS6053790U (en) | crane hanging equipment | |
| JPS59123075U (en) | Load resting device for jib cranes, etc. | |
| SU1464968A1 (en) | Timber loading control system | |
| JPS6110366U (en) | Front loader hydraulic circuit | |
| JPH0338893U (en) | ||
| JPS6123352U (en) | Hydraulic circuit of a hydraulic shovel that also serves as a crane | |
| JPS60100397U (en) | Crane overload prevention device | |
| JPS60148364U (en) | Crane device installed on power shovel | |
| JPS58170392U (en) | Winding barrel device for mooring work boats, etc. | |
| JPS61175602U (en) | ||
| JPS62189386U (en) | ||
| JPS5899287U (en) | Hydraulic winch with free fall device |