JPH0249985U - - Google Patents
Info
- Publication number
- JPH0249985U JPH0249985U JP12908888U JP12908888U JPH0249985U JP H0249985 U JPH0249985 U JP H0249985U JP 12908888 U JP12908888 U JP 12908888U JP 12908888 U JP12908888 U JP 12908888U JP H0249985 U JPH0249985 U JP H0249985U
- Authority
- JP
- Japan
- Prior art keywords
- jib
- sheave
- head
- rope
- crane
- 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
- 239000000725 suspension Substances 0.000 claims description 2
- 238000010586 diagram Methods 0.000 description 4
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
Landscapes
- Jib Cranes (AREA)
Description
第１図は本考案になる第一実施例のジブ張出し
状態構成説明図、第２図は第１図の矢視図、第
３図は本考案になる第二実施例のジブ張出し状態
構成説明図、第４図は第３図の矢視図、第５図
は第二実施例の変形例を示すジブ張出し状態構成
説明図、第６図は従来のジブ張出し状態構成説明
図、第７図は従来のジブ先端部側面図、第８図は
従来のジブ先端部平面図である。
１……ブーム、１ａ……ブーム頭部、２……シ
ーブ、３……ジブ、４……ジブポイントシーブ、
６……ジブ起伏シリンダ、７ａ……イコライザシ
ーブ、８……ガイケーブル、８ａ……サスペンシ
ヨンロツド、９，１０……インナジブ用ガイドロ
ーラ、１２……摺動枠体、Ｗ……ジブロープ。
Fig. 1 is an explanatory diagram of the configuration of the jib in the extended state of the first embodiment of the present invention, Fig. 2 is a view taken in the direction of the arrow in Fig. 1, and Fig. 3 is an explanatory diagram of the configuration of the jib in the extended state of the second embodiment of the present invention. 4 is a view in the direction of the arrow in FIG. 3, FIG. 5 is an explanatory diagram of the configuration of the jib in an extended state showing a modification of the second embodiment, FIG. 6 is an explanatory diagram of the configuration of the conventional jib in the extended state, and FIG. 8 is a side view of a conventional jib tip, and FIG. 8 is a plan view of a conventional jib tip. 1...Boom, 1a...Boom head, 2...Sheave, 3...Jib, 4...Jib point sheave,
6... Jib hoisting cylinder, 7a... Equalizer sheave, 8... Guy cable, 8a... Suspension rod, 9, 10... Guide roller for inner jib, 12... Sliding frame, W... Jib rope.
Claims (1)
れるジブ先端側に該ジブ先端のジブポイントシー
ブに掛装されるジブロープの径方向にづれた位置
の一方の側に一端が枢着されるジブ起伏シリンダ
と、前記ロープが掛装されるブーム頭部に設けら
れたシーブの径方向にずれた位置に該ジブの揺動
方向に揺動自在に支持されるイコライザシーブと
、前記シリンダの他端に一端が連結されると共に
、該シーブに掛装して折り返された他端が前記シ
リンダ枢着位置に対応する他方の側に連結される
ガイケーブルとを備えてなることを特徴とするク
レーンのジブ起伏装置。 (2) クレーンのブームの頭部に揺動自在に支持
されるジブ先端側に該ジブの長手方向に摺動自在
に外嵌される摺動枠体と、該枠体に一端が、該枠
体よりも該ジブの揺動支持側寄りに他端が各々枢
着されるジブ起伏シリンダと、該ジブ先端のジブ
ポイントシーブに掛装されるジブロープの径方向
にづれた前記枠体の面における左右位置に一端が
、また該ロープが掛装されるブームの頭部に設け
られたシーブの径方向にずれた該頭部における左
右位置に他端が各々連結される一対のサスペンシ
ヨンロツドとを備えてなることを特徴とするクレ
ーンのジブ起伏装置。[Scope of Claim for Utility Model Registration] (1) One side of the jib rope that is radially offset from the jib point sheave at the jib end, which is swingably supported on the boom head of the crane. a jib hoisting cylinder, one end of which is pivotally attached to the side of the jib, and a sheave provided at the boom head on which the rope is hung, and the sheave is supported at a position offset in the radial direction so as to be swingable in the swinging direction of the jib. an equalizer sheave; and a guy cable whose one end is connected to the other end of the cylinder and whose other end, which is hung over the sheave and folded back, is connected to the other side corresponding to the cylinder pivot position. A crane jib hoisting device characterized by comprising: (2) A sliding frame body that is slidably fitted in the longitudinal direction of the jib on the front end side of the jib that is swingably supported by the head of the boom of the crane; A jib hoisting cylinder whose other end is pivoted closer to the rocking support side of the jib than the jib body, and a jib rope hung on a jib point sheave at the tip of the jib, on the surface of the frame body offset in the radial direction. a pair of suspension rods, one end of which is connected to the left and right positions, and the other end of which is connected to the right and left positions of the head, which is offset in the radial direction of a sheave provided at the head of the boom on which the rope is hung; A crane jib hoisting device comprising:
Priority Applications (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP12908888U JPH0249985U (en) | 1988-09-30 | 1988-09-30 | |
| US07/372,454 US4967917A (en) | 1988-08-03 | 1989-06-28 | Jib derricking gear for a crane |
| KR2019890011300U KR920003797Y1 (en) | 1988-08-03 | 1989-07-31 | Jib derricking gear for a crane |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP12908888U JPH0249985U (en) | 1988-09-30 | 1988-09-30 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH0249985U true JPH0249985U (en) | 1990-04-06 |
Family
ID=31383039
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP12908888U Pending JPH0249985U (en) | 1988-08-03 | 1988-09-30 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0249985U (en) |
-
1988
- 1988-09-30 JP JP12908888U patent/JPH0249985U/ja active Pending
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