JPH0444281U - - Google Patents
Info
- Publication number
- JPH0444281U JPH0444281U JP8548890U JP8548890U JPH0444281U JP H0444281 U JPH0444281 U JP H0444281U JP 8548890 U JP8548890 U JP 8548890U JP 8548890 U JP8548890 U JP 8548890U JP H0444281 U JPH0444281 U JP H0444281U
- Authority
- JP
- Japan
- Prior art keywords
- boom
- sheave
- rope
- vehicle body
- respect
- 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
- 238000010586 diagram Methods 0.000 description 1
Description
第１図はこの考案による伸長用シーブ装置の一
実施例の要部説明用斜視図、第２図は従来の移動
式クレーン車の外観側面図、第３図及び第４図は
従来の３段の伸縮式ブーム装置の作動説明図であ
る。
１……第１ブーム、２……第２ブーム、２１，
２２……第２ブーム側面板の穴、３……第３ブー
ム、４……伸長用ワイヤ、５……シーブＡ、６…
…イコライザシーブ、７……シーブＢ。
Fig. 1 is a perspective view for explaining the essential parts of an embodiment of an extension sheave device according to this invention, Fig. 2 is an external side view of a conventional mobile crane, and Figs. 3 and 4 are a conventional three-stage sheave device. FIG. 2 is an explanatory diagram of the operation of the telescoping boom device. 1...first boom, 2...second boom, 2 1 ,
2 2 ... Hole in the second boom side plate, 3... Third boom, 4... Extension wire, 5... Sheave A, 6...
...Equalizer sheave, 7...Sheave B.
Claims (1)
装置において、ロープの両端は車体に対し３段ブ
ームの場合第１ブームに固定し、第２ブームに設
けられた２箇のシーブと、第３ブームに設けられ
たイコライザシーブを介しているブーム伸縮装置
であつて、上記第２ブームに設けられた２箇のシ
ーブは互いに段違いに水平、かつ該中心軸線が互
いに異なる垂直線であるように配設され、上記第
３ブームに設けられたイコライザシーブは、水平
面に対して斜めに配設されていることを特徴とす
るブーム伸縮装置におけるシーブ装置。 In a boom extension device with three or more stages that extends and retracts using a rope, both ends of the rope are fixed to the first boom in the case of a three-stage boom with respect to the vehicle body, and two sheaves provided on the second boom and the third boom are fixed to the vehicle body. A boom extension/retraction device via an equalizer sheave provided on the second boom, wherein the two sheaves provided on the second boom are arranged horizontally at different levels from each other and their center axes are vertical lines different from each other. A sheave device in a boom telescoping device, wherein the equalizer sheave provided on the third boom is disposed diagonally with respect to a horizontal plane.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP8548890U JPH0752151Y2 (en) | 1990-08-14 | 1990-08-14 | Sheave device in boom extender |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP8548890U JPH0752151Y2 (en) | 1990-08-14 | 1990-08-14 | Sheave device in boom extender |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH0444281U true JPH0444281U (en) | 1992-04-15 |
| JPH0752151Y2 JPH0752151Y2 (en) | 1995-11-29 |
Family
ID=31816790
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP8548890U Expired - Lifetime JPH0752151Y2 (en) | 1990-08-14 | 1990-08-14 | Sheave device in boom extender |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0752151Y2 (en) |
-
1990
- 1990-08-14 JP JP8548890U patent/JPH0752151Y2/en not_active Expired - Lifetime
Also Published As
| Publication number | Publication date |
|---|---|
| JPH0752151Y2 (en) | 1995-11-29 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| EXPY | Cancellation because of completion of term |