JPS6226386U - - Google Patents
Info
- Publication number
- JPS6226386U JPS6226386U JP11741785U JP11741785U JPS6226386U JP S6226386 U JPS6226386 U JP S6226386U JP 11741785 U JP11741785 U JP 11741785U JP 11741785 U JP11741785 U JP 11741785U JP S6226386 U JPS6226386 U JP S6226386U
- Authority
- JP
- Japan
- Prior art keywords
- boom
- detecting
- working radius
- length
- angle
- 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 6
- 230000002265 prevention Effects 0.000 claims 1
- 238000010586 diagram Methods 0.000 description 2
Landscapes
- Jib Cranes (AREA)
Description
第１図はこの考案の一実施例の構成を示すブロ
ツク図、第２図は同実施例の動作を説明するため
のフローチヤート、第３図は本考案が適用される
トラツククレーンの構成を示す概略図、第４図は
第３図に示すトラツククレーンの限界荷重曲線を
示すグラフである。
３……ブーム、４……ブーム俯仰シリンダ、１
２……ブーム長さ検出器、１４……ブーム角度検
出器、１５……圧力検出器、２６……ＲＯＭ、３
１……リレードライブ回路、３２……リレー、３
３……ブザー。
Fig. 1 is a block diagram showing the configuration of an embodiment of this invention, Fig. 2 is a flowchart for explaining the operation of the same embodiment, and Fig. 3 shows the structure of a truck crane to which the invention is applied. The schematic diagram, FIG. 4, is a graph showing the limit load curve of the truck crane shown in FIG. 3...Boom, 4...Boom elevation cylinder, 1
2...Boom length detector, 14...Boom angle detector, 15...Pressure detector, 26...ROM, 3
1... Relay drive circuit, 32... Relay, 3
3...Buzzer.
Claims (1)
する角度を設定するブーム俯仰シリンダとを有し
、前記ブームの長さを設定し、前記ブームの先端
部に導かれたワイヤロープによつて重量物を吊り
上げるクレーンにおいて、前記ブームの長さを検
出するブーム長さ検出手段と、前記ブームの角度
を検出するブーム角度検出手段と、吊上荷重に対
応して前記ブーム俯仰シリンダに作用する圧力を
検出する圧力検出手段と、各吊上荷重毎に許容作
業半径が各々記憶された記憶手段と、前記圧力検
出手段の検出結果に基づいて実際の吊上荷重を算
出し、この算出結果に基づいて前記記憶手段から
許容作業半径を読み出すと共に、前記ブーム長さ
検出手段及び前記ブーム角度検出手段の検出結果
に基づいて実際の作業半径を算出して、この作業
半径が前記許容作業半径を逸脱したか否かを判別
する演算手段と、前記演算手段の判別結果に基づ
いて警報又は停止信号を発する手段とを具備する
ことを特徴とするクレーン用過負荷防止装置。 It has a telescopic boom and a boom elevation cylinder that sets the angle of this boom with respect to a horizontal plane, sets the length of the boom, and lifts a heavy object by a wire rope guided to the tip of the boom. In the crane, a boom length detection means for detecting the length of the boom, a boom angle detection means for detecting the angle of the boom, and a pressure for detecting pressure acting on the boom elevation cylinder in response to a lifting load. a detection means, a storage means in which an allowable working radius is stored for each lifting load, and an actual lifting load calculated based on the detection result of the pressure detection means, and the storage means based on the calculation result. reads the allowable working radius from the above, calculates the actual working radius based on the detection results of the boom length detecting means and the boom angle detecting means, and determines whether or not this working radius deviates from the allowable working radius. 1. An overload prevention device for a crane, comprising: a calculation means for making a determination; and a means for issuing an alarm or a stop signal based on the determination result of the calculation means.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP11741785U JPS6226386U (en) | 1985-07-31 | 1985-07-31 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP11741785U JPS6226386U (en) | 1985-07-31 | 1985-07-31 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS6226386U true JPS6226386U (en) | 1987-02-18 |
Family
ID=31002907
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP11741785U Pending JPS6226386U (en) | 1985-07-31 | 1985-07-31 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS6226386U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0577191U (en) * | 1992-03-31 | 1993-10-19 | 株式会社タダノ | Working radius limiting device for working machine with boom |
-
1985
- 1985-07-31 JP JP11741785U patent/JPS6226386U/ja active Pending
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0577191U (en) * | 1992-03-31 | 1993-10-19 | 株式会社タダノ | Working radius limiting device for working machine with boom |
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