JPH0357898U - - Google Patents
Info
- Publication number
- JPH0357898U JPH0357898U JP11781089U JP11781089U JPH0357898U JP H0357898 U JPH0357898 U JP H0357898U JP 11781089 U JP11781089 U JP 11781089U JP 11781089 U JP11781089 U JP 11781089U JP H0357898 U JPH0357898 U JP H0357898U
- Authority
- JP
- Japan
- Prior art keywords
- detection switch
- self
- activated
- propelled crane
- boom
- 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
- 238000001514 detection method Methods 0.000 claims 4
- 238000004804 winding Methods 0.000 claims 1
- 238000010586 diagram Methods 0.000 description 2
Landscapes
- Arrangement Of Elements, Cooling, Sealing, Or The Like Of Lighting Devices (AREA)
- Circuit Arrangements For Discharge Lamps (AREA)
Description
第１図および第２図は、本考案の自走式クレー
ンの要部の説明図、第３図および第４図は従来の
自走式クレーンの説明図である。
FIGS. 1 and 2 are explanatory diagrams of essential parts of a self-propelled crane of the present invention, and FIGS. 3 and 4 are explanatory diagrams of a conventional self-propelled crane.
Claims (1)
した吊具を巻上げ巻下げ駆動自在に吊下してなる
自走式クレーン、特に、ブームの先端に、当該ブ
ーム先端部に対して吊具が所定値以上近づいたと
き作動する巻過検出スイツチを設け、この巻過検
出スイツチの作動時に警報を発するよう構成する
と共に、その走行移動時には前記吊具を巻過検出
スイツチの作動する前記所定値を超えて巻上げ、
この吊具をブームの先端部に直接又は間接的に衝
接定位せしめる如く構成してなる自走式クレーン
において、前記油圧駆動ウインチの油圧モータの
油圧駆動回路に、前記巻過検出スイツチの作動時
に機能する低圧リリーフ弁を取り付け、このリリ
ーフ弁により前記巻過検出スイツチの作動時に前
記油圧駆動ウインチの巻上力が低減する如く構成
してあることを特徴とする自走式クレーン。 A self-propelled crane in which a lifting device is suspended from the tip of a boom by a hydraulically driven winch and can be freely hoisted and lowered. An overwinding detection switch is provided which is activated when the overwinding detection switch is activated, and an alarm is issued when the overwinding detection switch is activated. winding,
In a self-propelled crane configured such that the hoist is positioned directly or indirectly in collision with the tip of the boom, the hydraulic drive circuit of the hydraulic motor of the hydraulic drive winch is connected to the A self-propelled crane, characterized in that it is equipped with a functioning low-pressure relief valve, and is configured such that the relief valve reduces the hoisting force of the hydraulically driven winch when the over-hoisting detection switch is actuated.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP11781089U JPH0357898U (en) | 1989-10-06 | 1989-10-06 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP11781089U JPH0357898U (en) | 1989-10-06 | 1989-10-06 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH0357898U true JPH0357898U (en) | 1991-06-04 |
Family
ID=31666010
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP11781089U Pending JPH0357898U (en) | 1989-10-06 | 1989-10-06 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0357898U (en) |
-
1989
- 1989-10-06 JP JP11781089U patent/JPH0357898U/ja active Pending
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