JPH0255692U - - Google Patents
Info
- Publication number
- JPH0255692U JPH0255692U JP13341688U JP13341688U JPH0255692U JP H0255692 U JPH0255692 U JP H0255692U JP 13341688 U JP13341688 U JP 13341688U JP 13341688 U JP13341688 U JP 13341688U JP H0255692 U JPH0255692 U JP H0255692U
- Authority
- JP
- Japan
- Prior art keywords
- control cylinder
- boom
- rope
- displacement
- cylinder
- 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.)
- Granted
Links
- 238000006073 displacement reaction Methods 0.000 claims description 6
- 230000008602 contraction Effects 0.000 claims 1
- 238000001514 detection method Methods 0.000 claims 1
- 238000010586 diagram Methods 0.000 description 2
Landscapes
- Control And Safety Of Cranes (AREA)
- Jib Cranes (AREA)
Description
第１図は本考案のフツクの位置調節機能付クレ
ーンの制御部を示すブロツク図、第２図はこの制
御部の作用を示すフローチヤート、第３図は本考
案の対象となるクレーンの１例を示す略側面図、
第４図はクレーンの油圧制御回路の１例を示す油
圧回路図である。
１：支柱、２：ブーム、３，４：油圧シリンダ
、５：ドラム、６：プーリ、７：ケーブル、８：
動滑車、９：フツク、１０：油圧回路切換弁、１
１：スプール、１２：切換シリンダ、１３，１４
：電磁弁、１５：変位計、１６：制御盤、１７：
制御器、１８：伸縮制御部、１９：フツク上下制
御部、２０：起伏制御部、２１：旋回制御部、２
２：アクセル制御部、２３：切換スプール、２４
：サーボシリンダ、２５，２６：電磁弁、２７：
アクセルシリンダ、２８：変位計。
Fig. 1 is a block diagram showing the control section of the crane with a hook position adjustment function of the present invention, Fig. 2 is a flowchart showing the operation of this control section, and Fig. 3 is an example of the crane to which the present invention is applied. A schematic side view showing
FIG. 4 is a hydraulic circuit diagram showing an example of a hydraulic control circuit for a crane. 1: Strut, 2: Boom, 3, 4: Hydraulic cylinder, 5: Drum, 6: Pulley, 7: Cable, 8:
Moving pulley, 9: Hook, 10: Hydraulic circuit switching valve, 1
1: Spool, 12: Switching cylinder, 13, 14
: Solenoid valve, 15: Displacement meter, 16: Control panel, 17:
Controller, 18: Extension control section, 19: Hook up/down control section, 20: Luffing control section, 21: Turning control section, 2
2: Accelerator control section, 23: Switching spool, 24
: Servo cylinder, 25, 26: Solenoid valve, 27:
Accelerator cylinder, 28: displacement meter.
Claims (1)
ブームの先端に設けたプーリに掛け渡したロープ
に吊り下げられたフツクと、上記ロープを巻き掛
けたドラムを回転駆動する油圧モータと、上記油
圧シリンダへの圧油の給排を制御する第一の制御
シリンダと、この第一の制御シリンダの変位を、
直接又は第一の制御シリンダの制御信号から間接
的に検出する検出手段と、上記油圧モータへの圧
油の給排を制御する第二の制御シリンダと、上記
検出手段から送り込まれる、第一の制御シリンダ
の変位を表わす信号に基づいて第二の制御シリン
ダを変位させる制御器とから成り、この制御器は
、ブームが伸長する場合に、第一の制御シリンダ
の変位により求められる伸長速度に応じてロープ
を送り出し、ブームが収縮する場合に、第一の制
御シリンダの変位により求められる収縮速度に応
じてロープを巻き取る、フツクの位置調節機能付
クレーン。 A boom that is extendable and retractable by a hydraulic cylinder, a hook that is suspended from a rope that is wrapped around a pulley provided at the tip of this boom, a hydraulic motor that rotates and drives a drum around which the rope is wound, and a hydraulic motor that rotates and drives a drum that is wrapped around the rope, and a The first control cylinder that controls the supply and discharge of pressure oil, and the displacement of this first control cylinder,
a detection means that directly or indirectly detects from the control signal of the first control cylinder; a second control cylinder that controls the supply and discharge of pressure oil to the hydraulic motor; a controller for displacing a second control cylinder based on a signal representative of the displacement of the control cylinder, the controller displacing the second control cylinder in accordance with the extension rate determined by the displacement of the first control cylinder when the boom is extended. A crane with a hook position adjustment function that sends out a rope using the boom and retracts the rope according to the contraction speed determined by the displacement of the first control cylinder when the boom retracts.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP13341688U JPH0641984Y2 (en) | 1988-10-14 | 1988-10-14 | Crane with hook position adjustment function |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP13341688U JPH0641984Y2 (en) | 1988-10-14 | 1988-10-14 | Crane with hook position adjustment function |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH0255692U true JPH0255692U (en) | 1990-04-23 |
| JPH0641984Y2 JPH0641984Y2 (en) | 1994-11-02 |
Family
ID=31391254
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP13341688U Expired - Lifetime JPH0641984Y2 (en) | 1988-10-14 | 1988-10-14 | Crane with hook position adjustment function |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0641984Y2 (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0465290U (en) * | 1990-10-16 | 1992-06-05 | ||
| JP2001151463A (en) * | 1999-11-30 | 2001-06-05 | Furukawa Co Ltd | Device for holding hook suspension length |
-
1988
- 1988-10-14 JP JP13341688U patent/JPH0641984Y2/en not_active Expired - Lifetime
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0465290U (en) * | 1990-10-16 | 1992-06-05 | ||
| JP2001151463A (en) * | 1999-11-30 | 2001-06-05 | Furukawa Co Ltd | Device for holding hook suspension length |
Also Published As
| Publication number | Publication date |
|---|---|
| JPH0641984Y2 (en) | 1994-11-02 |
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