JPS61145784U - - Google Patents
Info
- Publication number
- JPS61145784U JPS61145784U JP3005185U JP3005185U JPS61145784U JP S61145784 U JPS61145784 U JP S61145784U JP 3005185 U JP3005185 U JP 3005185U JP 3005185 U JP3005185 U JP 3005185U JP S61145784 U JPS61145784 U JP S61145784U
- Authority
- JP
- Japan
- Prior art keywords
- signal
- boom
- crane
- abnormal operation
- operation detector
- 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
- 230000002159 abnormal effect Effects 0.000 claims description 5
- 238000010586 diagram Methods 0.000 description 3
Landscapes
- Jib Cranes (AREA)
- Control And Safety Of Cranes (AREA)
Description
第1図は、本考案の1実施例の説明図、第2図
は本考案の他の実施例の説明図、第3図は従来例
の説明図である。
1;ブーム、9;異常作動検出器、8,18;
シヤツトオフ弁(起仰停止手段)。
FIG. 1 is an explanatory diagram of one embodiment of the present invention, FIG. 2 is an explanatory diagram of another embodiment of the present invention, and FIG. 3 is an explanatory diagram of a conventional example. 1; Boom, 9; Abnormal operation detector, 8, 18;
Shutoff valve (lifting stop means).
Claims (1)
し、前記ブームの作業姿勢に対応してあらかじめ
記憶した限界値と実際値を比較して実際値が限界
値に達すると信号を出力する異常作動検出器を備
え、当該異常作動検出器が前記信号を出力したと
きには前記ブームの倒伏方向の動きを停止させる
ようにしたクレーンにおいて、 前記実際値が前記限界値を超えた一定値に達す
ると前記異常作動検出器から信号を出力させると
共に、当該信号に応答して前記ブームの起仰方向
の動きを停止させる起仰停止手段を備えたことを
特徴とするクレーンの安全装置。[Claims for Utility Model Registration] The boom is controlled to raise and lower through a hydraulic actuator, and the actual value is compared with a pre-stored limit value corresponding to the working posture of the boom, and when the actual value reaches the limit value, a signal is issued. In the crane, the crane is equipped with an abnormal operation detector that outputs the signal, and the movement of the boom in the direction of collapse is stopped when the abnormal operation detector outputs the signal, wherein the actual value reaches a certain value exceeding the limit value. A safety device for a crane, characterized in that the crane is equipped with a lifting stop means that causes the abnormal operation detector to output a signal when the abnormal operation detector reaches the peak position, and stops the movement of the boom in the lifting direction in response to the signal.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP1985030051U JPH0350154Y2 (en) | 1985-03-01 | 1985-03-01 |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP1985030051U JPH0350154Y2 (en) | 1985-03-01 | 1985-03-01 |
Publications (2)
Publication Number | Publication Date |
---|---|
JPS61145784U true JPS61145784U (en) | 1986-09-08 |
JPH0350154Y2 JPH0350154Y2 (en) | 1991-10-25 |
Family
ID=30529399
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP1985030051U Expired JPH0350154Y2 (en) | 1985-03-01 | 1985-03-01 |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPH0350154Y2 (en) |
Citations (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS5158239A (en) * | 1974-11-19 | 1976-05-21 | Tadano Tekkosho Kk | Shinshukubuumu ojusuru idoshikikureenno shinshukubuumukigyoseigenshingohatsuseisochi |
-
1985
- 1985-03-01 JP JP1985030051U patent/JPH0350154Y2/ja not_active Expired
Patent Citations (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS5158239A (en) * | 1974-11-19 | 1976-05-21 | Tadano Tekkosho Kk | Shinshukubuumu ojusuru idoshikikureenno shinshukubuumukigyoseigenshingohatsuseisochi |
Also Published As
Publication number | Publication date |
---|---|
JPH0350154Y2 (en) | 1991-10-25 |