JPS59146388U - Crane overload prevention device - Google Patents
Crane overload prevention deviceInfo
- Publication number
- JPS59146388U JPS59146388U JP3744283U JP3744283U JPS59146388U JP S59146388 U JPS59146388 U JP S59146388U JP 3744283 U JP3744283 U JP 3744283U JP 3744283 U JP3744283 U JP 3744283U JP S59146388 U JPS59146388 U JP S59146388U
- Authority
- JP
- Japan
- Prior art keywords
- boom
- hoisting
- prevention device
- overload prevention
- tension 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.)
- Pending
Links
Landscapes
- Jib Cranes (AREA)
Abstract
(57)【要約】本公報は電子出願前の出願データであるた
め要約のデータは記録されません。(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.
Description
第１図は本考案の適用対象の一例であるクレーンの概略
図、第２図は従来の巻上ロープ２本掛けの一例図、第３
図は同じ〈従来の４本掛けの一例図、第４図Ａは従来の
ブーム先端部の構造を示す断面図、同ＢはＡのＥ−Ｅ断
面図、第５図は従来の過負荷防止装置の一例を示す回路
構成図、第６図は本考案による張力検出器の一例を示す
図、第７図は該張力検出器の２本掛は時における取付状
態図、第８図は本考案における２本掛は時のブーム先端
部の構造の一例を示す一部切断図、第９図は本考案の前
記張力検出器を用いたブーム先端部のシーブハンガの取
付状態図、第１０図は同じく４本掛は時の巻上ロープの
ブームへの連結状態を示す図である。
５・・・ブーム、５ａ・・・ブラケット、８・・・巻上
ロープ、１１ａ〜ＩＩＣ・・・ブームポイントシーブ、
１３・・・ロープソケット、１４′・・・シーブハンガ
、１５・・・ハンガ、１６，１７，３８．３９・・・ビ
ン、３２・・・張力検出器、３３〜３６・・・ピン穴。Figure 1 is a schematic diagram of a crane that is an example of the application of the present invention, Figure 2 is an example of a conventional hoisting rope with two ropes, and Figure 3
The figures are the same (an example of a conventional 4-barrel system, Figure 4A is a sectional view showing the structure of the conventional boom tip, Figure 4B is a sectional view taken along line E-E of A, and Figure 5 is a conventional overload prevention system). FIG. 6 is a diagram showing an example of a tension detector according to the present invention; FIG. 7 is a diagram showing how the tension detector is installed with two wires; FIG. 8 is a diagram showing an example of the tension detector according to the present invention. 9 is a partially cutaway diagram showing an example of the structure of the boom tip, FIG. 9 is a diagram showing how the sheave hanger at the boom tip is installed using the tension detector of the present invention, and FIG. 10 is the same. 4 is a diagram showing how the hoisting rope is connected to the boom. 5... Boom, 5a... Bracket, 8... Hoisting rope, 11a-IIC... Boom point sheave,
13... Rope socket, 14'... Sheave hanger, 15... Hanger, 16, 17, 38. 39... Bin, 32... Tension detector, 33-36... Pin hole.
Claims (1)
ことにより、巻上ロープ掛数を２尿から４本に変更し得
る構造を有し、かつ巻上ロープの張力を検出する張力検
出器を有するクレーンの過負荷防止装置において、張力
検出器が、巻上ローブ２本掛けの場合にブームに設けた
ブラケットと巻上ロープ端との間に介装される取付構造
を有すると共に、４本掛けの場合にブーム先端部に追加
されるブームポイントシーブは前記張力検出器を介装し
なければ取付けることができない構造としたことを特徴
とするクレーンの過負荷防止装置。A crane that has a structure that can change the number of hoisting ropes from two to four by adding a boom point sheave to the tip of the hoisting boom, and has a tension detector that detects the tension of the hoisting rope. In this overload prevention device, the tension detector has a mounting structure that is interposed between a bracket provided on the boom and the end of the hoisting rope when two hoisting lobes are attached, and when the tension detector is attached to four hoisting lobes. An overload prevention device for a crane, characterized in that a boom point sheave added to the tip of the boom cannot be attached unless the tension detector is interposed therein.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP3744283U JPS59146388U (en) | 1983-03-17 | 1983-03-17 | Crane overload prevention device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP3744283U JPS59146388U (en) | 1983-03-17 | 1983-03-17 | Crane overload prevention device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS59146388U true JPS59146388U (en) | 1984-09-29 |
Family
ID=30168127
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP3744283U Pending JPS59146388U (en) | 1983-03-17 | 1983-03-17 | Crane overload prevention device |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS59146388U (en) |
-
1983
- 1983-03-17 JP JP3744283U patent/JPS59146388U/en active Pending
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