JPS6175494U - - Google Patents
Info
- Publication number
- JPS6175494U JPS6175494U JP16028684U JP16028684U JPS6175494U JP S6175494 U JPS6175494 U JP S6175494U JP 16028684 U JP16028684 U JP 16028684U JP 16028684 U JP16028684 U JP 16028684U JP S6175494 U JPS6175494 U JP S6175494U
- Authority
- JP
- Japan
- Prior art keywords
- jib
- sheave
- bridle
- crane
- sheaves
- 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
- 210000001364 upper extremity Anatomy 0.000 claims description 2
- 238000004804 winding Methods 0.000 claims 1
- 238000010586 diagram Methods 0.000 description 1
Landscapes
- Jib Cranes (AREA)
Description
第１図は本考案のジブ起伏装置を備えたタワー
クレーンの側面図、第２図は本考案のジブ起伏装
置の要部を拡大して示す側面図、第３図は第２図
の矢視図である。第４図は従来のジブ起伏装置
を備えたタワークレーンの側面図、第５図は作業
姿勢及び非作業姿勢を示すタワークレーンの側面
図、第６図は第４図の−矢視図である。
１…クレーン本体、２…タワーブーム、３…ジ
ブ、７…Ａフレームの前脚、１０…スイングレバ
ー、１５…ウインチ、２１…第１ペンダントロー
プ、２２…第２ペンダントロープ、２３…ブライ
ドル、２４…ハンガー、２６…起伏ロープ、２９
…第１シーブ、３０…第２シーブ。
Fig. 1 is a side view of a tower crane equipped with the jib hoisting device of the present invention, Fig. 2 is an enlarged side view showing the main parts of the jib hoisting device of the present invention, and Fig. 3 is a view taken in the direction of the arrow in Fig. 2. It is a diagram. Fig. 4 is a side view of a tower crane equipped with a conventional jib hoisting device, Fig. 5 is a side view of the tower crane showing a working position and a non-working position, and Fig. 6 is a view taken in the direction of - arrow in Fig. 4. . DESCRIPTION OF SYMBOLS 1... Crane body, 2... Tower boom, 3... Jib, 7... Front leg of A frame, 10... Swing lever, 15... Winch, 21... First pendant rope, 22... Second pendant rope, 23... Bridle, 24... Hanger, 26...Luffing rope, 29
...first sheave, 30...second sheave.
Claims (1)
ジブが起伏可能に取付けられたタワークレーンに
おいて、一端をジブの先端部に、他端をタワーブ
ーム頂部に枢着したスイングレバーにそれぞれ係
止させた第１ペンダントロープと、一端をスイン
グレバーに係止させた第２ペンダントロープと、
複数個のシーブを有し、かつ第２ペンダントロー
プの他端を係止させたプライドルと、該ブライド
ルのシーブと対応する複数個のシーブを有し、か
つクレーン本体側に連結させたハンガーと、クレ
ーン本体に装着したＡフレームの頂部に設けた第
１シーブ及び該Ａフレームの前脚の下部側に設け
た第２シーブとを備え、クレーン本体内に設置し
たウインチから繰り出された起伏ロープを前記第
１シーブ及び前記第２シーブにて順次案内させた
後ブライドル側に導いて該ブライドル及びハンガ
ーの各シーブに順次掛け回わし、前記起伏ロープ
の巻き取り、繰り出しによりジブを起伏させるよ
うに構成したことを特徴とするタワークレーンの
ジブ起伏装置。 In a tower crane in which a jib is attached to the top of a tower boom attached to the crane body so as to be able to raise and lower, a first end is fixed to the tip of the jib and the other end is fixed to a swing lever pivoted to the top of the tower boom. a pendant rope; a second pendant rope having one end locked to a swing lever;
A bridle having a plurality of sheaves and having the other end of the second pendant rope locked; a hanger having a plurality of sheaves corresponding to the sheaves of the bridle and connected to the crane main body; A first sheave is provided at the top of the A-frame attached to the crane body, and a second sheave is provided at the lower part of the front leg of the A-frame. The jib is configured such that the jib is sequentially guided by the first sheave and the second sheave, and then guided to the bridle side and sequentially wrapped around each sheave of the bridle and hanger, and the jib is undulated by winding and letting out the undulating rope. A tower crane jib hoisting device featuring:
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP16028684U JPS6175494U (en) | 1984-10-25 | 1984-10-25 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP16028684U JPS6175494U (en) | 1984-10-25 | 1984-10-25 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS6175494U true JPS6175494U (en) | 1986-05-21 |
Family
ID=30718209
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP16028684U Pending JPS6175494U (en) | 1984-10-25 | 1984-10-25 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS6175494U (en) |
-
1984
- 1984-10-25 JP JP16028684U patent/JPS6175494U/ja active Pending
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