JPS644790Y2 - - Google Patents
Info
- Publication number
- JPS644790Y2 JPS644790Y2 JP504484U JP504484U JPS644790Y2 JP S644790 Y2 JPS644790 Y2 JP S644790Y2 JP 504484 U JP504484 U JP 504484U JP 504484 U JP504484 U JP 504484U JP S644790 Y2 JPS644790 Y2 JP S644790Y2
- Authority
- JP
- Japan
- Prior art keywords
- boom
- base
- tip
- pivotally supported
- shaft
- 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.)
- Expired
Links
- 238000005452 bending Methods 0.000 claims description 23
- 230000000694 effects Effects 0.000 description 1
Landscapes
- Jib Cranes (AREA)
Description
【考案の詳細な説明】
(a) 産業上の利用分野
本考案は、基部ブームと先部ブームとを連結用
シヤフトによつて屈折自在に接続した屈折ブーム
装置に関する。[Detailed Description of the Invention] (a) Field of Industrial Application The present invention relates to a bending boom device in which a base boom and a tip boom are bendably connected by a connecting shaft.
(b) 従来技術
従来の屈折式ブーム装置は第１図、第２図に示
すように０１は基部ブームで、この基部ブーム０
１の先部は、後述する先部ブーム０３との干渉を
避けるためにくの字形状に屈曲してあり、更に凹
形状０２にしてある。０３は先部ブームで、この
先部ブーム０３の基部も、基部ブーム０１との干
渉を避けるためにくの字形状に屈曲してある。(b) Prior art As shown in Fig. 1 and Fig. 2, the conventional refracting boom device has a base boom 01;
The tip of the boom 1 is bent into a dogleg shape to avoid interference with a tip boom 03, which will be described later, and is further formed into a concave shape 02. Reference numeral 03 denotes a tip boom, and the base of the tip boom 03 is also bent into a dogleg shape to avoid interference with the base boom 01.
前記先部ブーム０３の基部を基部ブーム０１の
凹形状０２部に挿入し、連結用シヤフト０４にて
接続することにより、先部ブーム０３と基部ブー
ム０１とは屈折自在となつている。 By inserting the base of the tip boom 03 into the concave portion 02 of the base boom 01 and connecting with the connecting shaft 04, the tip boom 03 and the base boom 01 are made bendable.
０５は油圧シリンダで、この油圧シリンダ０５
の基部は基部ブーム０１の略中央部に軸支し、油
圧シリンダ０５の先部は、先部ブーム０３の基部
に一端を軸支した第１連結杆０６の他端と、基部
ブーム０１の先部に一端を軸支した第２連結杆０
７の他端とに連着してある。 05 is a hydraulic cylinder, this hydraulic cylinder 05
The base of the hydraulic cylinder 05 is pivotally supported approximately at the center of the base boom 01, and the tip of the hydraulic cylinder 05 is connected to the other end of the first connecting rod 06, one end of which is pivotally supported at the base of the tip boom 03, and the tip of the base boom 01. A second connecting rod with one end pivoted on the
It is connected to the other end of 7.
前記油圧シリンダ０５を伸縮することにより第
１連結杆０６、第２連結杆０７を介して、基部ブ
ーム０１と先部ブーム０３とが屈折するようにな
つている。 By expanding and contracting the hydraulic cylinder 05, the base boom 01 and the tip boom 03 are bent via the first connecting rod 06 and the second connecting rod 07.
ところで、前記の屈折式ブーム装置において
は、基部ブーム０１の先部や、先部ブーム０３の
基部をくの字に屈曲したり、基部ブーム０１の先
部を凹形状０２にしているので、構造が複雑で集
中応力が発生しやすい。この集中応力をカバーす
るために各ブーム０１，０３を大きくする必要が
あり、重量が重くなり、高価になるという欠点が
あつた。 By the way, in the above-mentioned bending type boom device, the tip of the base boom 01 and the base of the tip boom 03 are bent in a dogleg shape, and the tip of the base boom 01 is made into a concave shape 02, so that the structure is is complex and tends to cause concentrated stress. In order to cover this concentrated stress, each of the booms 01 and 03 had to be made larger, which resulted in disadvantages of increased weight and cost.
(c) 考案の目的
本考案は上述の問題点を解決するためになされ
てもので、構造が簡単で重量が軽く、安価な屈折
式ブーム装置を提供することにある。(c) Purpose of the invention The present invention was made to solve the above-mentioned problems, and the object is to provide a refracting boom device that is simple in structure, light in weight, and inexpensive.
(d) 考案の構成
本考案の特徴とするところは、ブームとブーム
とを連結用シヤフトによつて屈折自在に接続した
屈折ブーム装置において、前記連結用シヤフトの
中央に空間部を設けるように、連結用シヤフトの
一端側には、一方のブームを軸支し、他端側には
他方のブームを軸支し、屈曲リンクを連結用シヤ
フトに近接した一方のブームと他方のブームとの
間の空間部に配置し、この屈曲リンクの一端を一
方のブームより内側に突出したリンク用シヤフト
に軸支し、屈曲リンクの他端を、他方のブームよ
り内側に突出した杆支持用シヤフトに一端を軸支
した連結杆の他端に連着させ、油圧シリンダの基
部を一方のブームの略中央部より内側に突出した
シリンダ支持用シヤフトに軸支し、油圧シリンダ
の先部を屈曲リンクの略中央部に軸支してなる屈
折式ブーム装置としたことである。(d) Structure of the invention The feature of the invention is that in a bending boom device in which two booms are refractably connected by a connecting shaft, a space is provided in the center of the connecting shaft. One boom is pivotally supported on one end of the connecting shaft, the other boom is pivotally supported on the other end, and a bending link is provided between one boom and the other boom close to the connecting shaft. The bending link is placed in the space, one end of the bending link is pivotally supported on a link shaft that protrudes inward from one boom, and the other end of the bending link is supported on a rod support shaft that protrudes inward from the other boom. The base of the hydraulic cylinder is connected to the other end of the pivotally supported connecting rod, and the base of the hydraulic cylinder is pivotally supported to a cylinder support shaft that protrudes inward from approximately the center of one boom, and the tip of the hydraulic cylinder is connected approximately to the center of the bending link. This is a retractable boom device that is pivotally supported at the center.
(e) 実施例
以下、本考案の実施例に基づいて説明すると１
は基部ブームであり、２は先部ブームである。(e) Example The following is an explanation based on an example of the present invention.
is the base boom and 2 is the tip boom.
３は前記基部ブーム１と先部ブーム２とを連結
する連結用シヤフトで、この連結用シヤフト３の
中央に空間部を設けるように、連結用シヤフト３
の一端側には基部ブーム１の先部を溶着してあ
り、他端側には先部ブーム２の先部を軸支してあ
る。 3 is a connecting shaft that connects the base boom 1 and the tip boom 2, and the connecting shaft 3 is connected so that a space is provided in the center of the connecting shaft 3.
The tip of a base boom 1 is welded to one end, and the tip of a tip boom 2 is pivotally supported to the other end.
４，４は三日月形状の左右一対の屈曲リンクで
前記連結用シヤフト３に近接した位置で、基部ブ
ーム１と先部ブーム２との間の空間部に配置して
ある。 Reference numerals 4 and 4 denote a pair of crescent-shaped left and right bending links, which are arranged in a space between the base boom 1 and the tip boom 2 at positions close to the connecting shaft 3.
屈曲リンク４，４の一端は基部ブーム１の先部
より内側に突出したリンク用シヤフト５に軸支し
てあり、屈曲リンク４，４の他端は、先部ブーム
２の基部より内側に突出した杆支持用シヤフト６
に一端を軸支した連結杆７の他端を挟持して連着
してある。 One end of the bending links 4, 4 is pivotally supported on a link shaft 5 that projects inward from the tip of the base boom 1, and the other end of the bending links 4, 4 projects inward from the base of the tip boom 2. Shaft 6 for supporting rods
One end of the connecting rod 7 is pivotally supported, and the other end of the connecting rod 7 is sandwiched and connected to the connecting rod 7.
８は油圧シリンダで、この油圧シリンダ８の基
部は基部ブーム１の略中央部より内側に突出した
シリンダ用シヤフト９に軸支してあり油圧シリン
ダ８の先部は左右一対の屈曲リンク４，４の略中
央部に挟持されて軸支してある。次に先部ブーム
２の基部と連結用シヤフト３との軸支部を第５図
に基づいて詳細に説明すると、１０は連結用シヤ
フト３に溶着したストツパーリング、１１は先部
ブーム２の基部に溶着したボス、１２は前記ボ１
１を連結用シヤフト３の回りに回転自在にするプ
レーンベアリングであり、止めナツト１３により
先部ブーム２は連結用シヤフト３に接続されてい
る。 Reference numeral 8 denotes a hydraulic cylinder, and the base of the hydraulic cylinder 8 is pivotally supported by a cylinder shaft 9 that protrudes inward from the approximate center of the base boom 1. The tip of the hydraulic cylinder 8 is connected to a pair of left and right bending links 4, 4. It is clamped and pivoted approximately at the center of the. Next, the shaft support between the base of the tip boom 2 and the connecting shaft 3 will be explained in detail based on FIG. The boss 12 is welded to the boss 1.
1 is a plain bearing that allows rotation around the connecting shaft 3, and the tip boom 2 is connected to the connecting shaft 3 by a locking nut 13.
以上の構成により、油圧シリンダ８を伸ばすと
第３図の実線の位置に、油圧シリンダを縮めると
一点鎖線の位置へと順次作動していく。 With the above configuration, when the hydraulic cylinder 8 is extended, it operates sequentially to the position shown by the solid line in FIG. 3, and when the hydraulic cylinder 8 is retracted, it operates sequentially to the position shown by the dashed-dotted line.
(f) 考案の効果
本考案は以上詳細に説明したように、ブームと
ブームとを連結用シヤフトによつて屈折自在に接
続した屈折ブーム装置において、前記連結用シヤ
フトの中央に空間部を設けるように、連結用シヤ
フトの一端側には、一方のブームを軸支し、他端
側には他方のブームを軸支し、屈曲リンクを連結
用シヤフトに近接した一方のブームと他方のブー
ムとの間の空間部に配置し、この屈曲リンクの一
端を一方のブームより内側に突出したリンク用シ
ヤフトに軸支し、屈曲リンクの他端を、他方のブ
ームより内側に突出した杆支持用シヤフトに一端
を軸支した連結杆の他端に連着させ、油圧シリン
ダの基部を一方のブームの略中央部より内側に突
出したシリンダ支持用シヤフトに軸支し、油圧シ
リンダの先部を屈曲リンクの略中央部に軸支した
ことにより、構造が簡単で、重量が軽く、安価な
屈折式ブーム装置ができる。(f) Effects of the invention As explained in detail above, the present invention provides a bending boom device in which booms are bendably connected by a connecting shaft, in which a space is provided in the center of the connecting shaft. One boom is pivotally supported on one end of the connecting shaft, the other boom is pivotally supported on the other end, and a bending link is connected between one boom and the other boom close to the connecting shaft. one end of this bending link is pivotally supported on a link shaft that protrudes inward from one boom, and the other end of the bending link is attached to a rod support shaft that protrudes inwardly from the other boom. One end is connected to the other end of the connecting rod which is pivoted, the base of the hydraulic cylinder is pivoted to a cylinder support shaft that protrudes inward from the approximate center of one boom, and the tip of the hydraulic cylinder is connected to the bending link. By supporting the boom approximately in the center, a retractable boom device with a simple structure, light weight, and low cost can be obtained.
第１図、第２図は従来の屈折式ブーム装置の正
面図と右側面図、第３図、第４図は本考案の屈折
式ブーム装置の正面図と右側面図、第５図は第４
図の先部ブームと連結用シヤフトとの軸支部の詳
細断面図である。
１は基部ブーム、２は先部ブーム、３は連結用
シヤフト、４は屈曲リンク、５はリンク用シヤフ
ト、６は杆支持用シヤフト、７は連結杆、８は油
圧シリンダ、９はシリンダ支持用シヤフトであ
る。
1 and 2 are a front view and a right side view of a conventional retractable boom device, FIGS. 3 and 4 are a front view and a right side view of a retractable boom device of the present invention, and FIG. 5 is a front view and a right side view of a conventional retractable boom device. 4
FIG. 3 is a detailed cross-sectional view of the shaft support between the front boom and the connecting shaft shown in the figure. 1 is a base boom, 2 is a tip boom, 3 is a connecting shaft, 4 is a bending link, 5 is a link shaft, 6 is a rod support shaft, 7 is a connecting rod, 8 is a hydraulic cylinder, 9 is for cylinder support It's a shaft.
Claims (1)
折自在に接続した屈折ブーム装置において、前記
連結用シヤフトの中央に空間部を設けるように、
連結用シヤフトの一端側には、一方のブームを軸
支し、他端側には他方のブームを軸支し、屈曲リ
ンクを連結用シヤフトに近接した一方のブームと
他方のブームとの間の空間部に配置し、この屈曲
リンクの一端を一方のブームより内側に突出した
リンク用シヤフトに軸支し、屈曲リンクの他端
を、他方のブームより内側に突出した杆支持用シ
ヤフトに一端を軸支した連結杆の他端に連着さ
せ、油圧シリンダの基部を一方のブームの略中央
部より内側に突出したシリンダ支持用シヤフトに
軸支し、油圧シリンダの先部を屈曲リンクの略中
央部に軸支してなる屈折式ブーム装置。 In a refracting boom device in which booms are refractably connected by a connecting shaft, a space is provided in the center of the connecting shaft,
One boom is pivotally supported on one end of the connecting shaft, the other boom is pivotally supported on the other end, and a bending link is provided between one boom and the other boom close to the connecting shaft. The bending link is placed in the space, one end of the bending link is pivotally supported on a link shaft that protrudes inward from one boom, and the other end of the bending link is supported on a rod support shaft that protrudes inward from the other boom. The base of the hydraulic cylinder is connected to the other end of the pivotally supported connecting rod, and the base of the hydraulic cylinder is pivotally supported to a cylinder support shaft that protrudes inward from approximately the center of one boom, and the tip of the hydraulic cylinder is connected approximately to the center of the bending link. A refracting boom device that is pivoted on the
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP504484U JPS60117388U (en) | 1984-01-17 | 1984-01-17 | Refractive boom device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP504484U JPS60117388U (en) | 1984-01-17 | 1984-01-17 | Refractive boom device |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS60117388U JPS60117388U (en) | 1985-08-08 |
| JPS644790Y2 true JPS644790Y2 (en) | 1989-02-07 |
Family
ID=30481195
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP504484U Granted JPS60117388U (en) | 1984-01-17 | 1984-01-17 | Refractive boom device |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS60117388U (en) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP6924669B6 (en) * | 2017-10-16 | 2021-09-29 | 古河ユニック株式会社 | Outrigger device |
| JP6924668B6 (en) * | 2017-10-16 | 2021-09-29 | 古河ユニック株式会社 | Outrigger device |
-
1984
- 1984-01-17 JP JP504484U patent/JPS60117388U/en active Granted
Also Published As
| Publication number | Publication date |
|---|---|
| JPS60117388U (en) | 1985-08-08 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| JPS644790Y2 (en) | ||
| JPH0416052U (en) | ||
| JPH0320364Y2 (en) | ||
| JPS6423383U (en) | ||
| JPS6129797Y2 (en) | ||
| JPS61188651U (en) | ||
| JPS61102920A (en) | Arm device for working machine such as power shovel | |
| JPS6126316Y2 (en) | ||
| JPS6026072Y2 (en) | link work jack | |
| JPH03102587U (en) | ||
| JPS5841762Y2 (en) | Tractor lift arm drive structure | |
| JPH0144550Y2 (en) | ||
| JPS63141285U (en) | ||
| JPH0226657U (en) | ||
| JPS62197691U (en) | ||
| JPS63166583U (en) | ||
| JPH0211892U (en) | ||
| JPS61165991U (en) | ||
| JPS6356749U (en) | ||
| JPH0412494U (en) | ||
| JPS6414251U (en) | ||
| JPS6432891U (en) | ||
| JPS6289286U (en) | ||
| JPS5818313B2 (en) | The new crane boom | |
| JPH0453850U (en) |