JPH0218484U - - Google Patents
Info
- Publication number
- JPH0218484U JPH0218484U JP9777888U JP9777888U JPH0218484U JP H0218484 U JPH0218484 U JP H0218484U JP 9777888 U JP9777888 U JP 9777888U JP 9777888 U JP9777888 U JP 9777888U JP H0218484 U JPH0218484 U JP H0218484U
- Authority
- JP
- Japan
- Prior art keywords
- load
- boom
- detector
- detects
- length
- 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
Landscapes
- Control And Safety Of Cranes (AREA)
- Jib Cranes (AREA)
Description
第１図は本考案に係るクレーンの安全装置を装
備した高所作業車の一例を示す斜視図、第２図は
クレーンの安全装置の一例を示すブロツク図、第
３図は動作状態を説明するためのフローチヤート
である。
１…高所作業車、２…ブーム、７…起伏角度検
出器、７ａ…異常判定器、８…ブーム長さ検出器
、８ａ…異常判定器、９…荷重検出器、１０…演
算装置、１１…定格荷重演算器、１２…駆動停止
装置、１３，１４…比較器、１５…警報ブザー、
１６…最小定格荷重記憶器。
Fig. 1 is a perspective view showing an example of an aerial work vehicle equipped with a crane safety device according to the present invention, Fig. 2 is a block diagram showing an example of a crane safety device, and Fig. 3 explains the operating state. This is a flowchart for DESCRIPTION OF SYMBOLS 1... Aerial work vehicle, 2... Boom, 7... Lifting angle detector, 7a... Abnormality determination device, 8... Boom length detector, 8a... Abnormality determination device, 9... Load detector, 10... Arithmetic device, 11 ... Rated load calculator, 12... Drive stop device, 13, 14... Comparator, 15... Alarm buzzer,
16...Minimum rated load memory.
Claims (1)
ブームの起伏角度を検出する起伏角度検出器と、
ブームの吊り上げ荷重を検出する荷重検出器と、
これらの各検出器の検出エラーを判定する異常判
定器と、これらの異常判定器の判定信号に基づい
てブーム等の作動を制御する制御信号を出力する
演算器とを具備し、前記異常判定器における判定
でもつて前記長さ検出器及び起伏角度検出器の何
れか一方または双方の検出結果が異常と判定され
た場合で、かつ前記荷重検出器の検出結果が正常
の場合であつて、前記荷重検出器で検出した荷重
検出値が予め設定した荷重値以下ならばブーム等
の作動を停止せず、また異常を警報せず、前記荷
重検出器の検出値が予め設定した荷重値以上なら
ばブーム等の作動を停止し、また警報するように
したことを特徴とするクレーンの安全装置。 a boom length detector that detects the length of the boom;
a luffing angle detector that detects the luffing angle of the boom;
a load detector that detects the lifting load of the boom;
The abnormality determination device includes an abnormality determination device that determines a detection error of each of these detectors, and a calculation unit that outputs a control signal that controls the operation of a boom or the like based on the determination signals of these abnormality determination devices. In the case where the detection result of either or both of the length detector and the undulation angle detector is determined to be abnormal in the determination in , and the detection result of the load detector is normal, and the load If the load detection value detected by the load detector is less than or equal to the preset load value, the operation of the boom etc. will not be stopped or an abnormality alarm will be issued, and if the detection value of the load detector is greater than or equal to the preset load value, the boom will not be activated. A crane safety device characterized in that it stops the operation of cranes, etc., and also issues an alarm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1988097778U JPH075103Y2 (en) | 1988-07-23 | 1988-07-23 | Crane safety equipment |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1988097778U JPH075103Y2 (en) | 1988-07-23 | 1988-07-23 | Crane safety equipment |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH0218484U true JPH0218484U (en) | 1990-02-07 |
| JPH075103Y2 JPH075103Y2 (en) | 1995-02-08 |
Family
ID=31323478
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP1988097778U Expired - Lifetime JPH075103Y2 (en) | 1988-07-23 | 1988-07-23 | Crane safety equipment |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH075103Y2 (en) |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS59223693A (en) * | 1983-05-30 | 1984-12-15 | 新明和工業株式会社 | Safety control device for boom-equipped vehicles |
-
1988
- 1988-07-23 JP JP1988097778U patent/JPH075103Y2/en not_active Expired - Lifetime
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS59223693A (en) * | 1983-05-30 | 1984-12-15 | 新明和工業株式会社 | Safety control device for boom-equipped vehicles |
Also Published As
| Publication number | Publication date |
|---|---|
| JPH075103Y2 (en) | 1995-02-08 |
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