JPS627669Y2 - - Google Patents
Info
- Publication number
- JPS627669Y2 JPS627669Y2 JP15755081U JP15755081U JPS627669Y2 JP S627669 Y2 JPS627669 Y2 JP S627669Y2 JP 15755081 U JP15755081 U JP 15755081U JP 15755081 U JP15755081 U JP 15755081U JP S627669 Y2 JPS627669 Y2 JP S627669Y2
- Authority
- JP
- Japan
- Prior art keywords
- boom
- tip
- length
- distal end
- storage body
- 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
Landscapes
- Jib Cranes (AREA)
Description
【考案の詳細な説明】
本考案はブーム伸長長さを可及的に長くできる
よう構成したブーム装置に関するものである。[Detailed Description of the Invention] The present invention relates to a boom device configured to make the extension length of the boom as long as possible.
クレーン等に用いられるブーム装置は、格納時
においては短かく、伸長時においては長いことが
望ましい。これは、前者については、クレーンを
トラツク等の車両に塔載する場合のスペース上か
らの問題であり、後者については、クレーンの性
能上、即ち広い作業半径、高揚程等を得るために
必要であるからである。 It is desirable that boom devices used in cranes and the like be short when retracted and long when extended. For the former, this is a space issue when mounting the crane on a vehicle such as a truck, and for the latter, it is necessary for the crane's performance, that is, to obtain a wide working radius, high lift, etc. Because there is.
従来のブーム装置は第１図に示すように、基端
ブーム１内に先端ブーム２が摺動自在に嵌挿され
ている。３はブーム伸縮用テレシリンダである。
今、ブーム格納長さL0を一定とすると、フツク
（図示せず）を吊下するための先端ブーム２の先
端部にある滑車収納体４の長さは、滑車５の大き
さ等により一定長l0と決つているから、必然的に
ブーム１の長さL1が決定される。その結果、先
端ブーム２が伸長した場合の安全等（伸長時にお
ける基端ブーム１と先端ブーム２の重ね長さl2：
一定）を考慮して先端ブーム格納時におけるこれ
らのブームの重ね長さL2が決定される。即ちこ
の重ね長さL2が先端ブーム２の伸長長さを決定
することとなる。従つてこの重ね長さL2をでき
るだけ長くなるよう構成すればその分だけブーム
伸長長さを長くできることとなる。 In the conventional boom device, as shown in FIG. 1, a distal end boom 2 is slidably inserted into a base end boom 1. 3 is a telecylinder for expanding and retracting the boom.
Now, assuming that the boom storage length L 0 is constant, the length of the pulley storage body 4 at the tip of the tip boom 2 for suspending a hook (not shown) is constant depending on the size of the pulley 5, etc. Since the length l0 is determined, the length L1 of the boom 1 is inevitably determined. As a result, safety, etc. when the tip boom 2 is extended (overlapping length l 2 of the base boom 1 and the tip boom 2 when extended ) :
The overlapping length L 2 of these booms when the tip boom is retracted is determined by taking into account (constant). That is, this overlapping length L2 determines the extension length of the tip boom 2. Therefore, if this overlapping length L2 is configured to be as long as possible, the boom extension length can be increased by that amount.
第３図は本考案の構成を示すもので、基端ブー
ム１の先端部６を先端下方に向つて細長に構成す
ると共に、この先端部６の下方端が先端ブーム１
の先端部６に設けた滑車収納体４内に一部入り込
むようこの滑車収納体４の横巾を前記基端ブーム
１の先端部６の横巾より広く構成したものであ
る。 FIG. 3 shows the configuration of the present invention, in which the distal end 6 of the proximal boom 1 is configured to be elongated toward the bottom of the distal end, and the lower end of the distal end 6 is connected to the distal boom 1.
The width of the pulley storage body 4 is configured to be wider than the width of the front end portion 6 of the proximal end boom 1 so as to partially fit into the pulley storage body 4 provided at the distal end portion 6 of the base boom 1.
従つてブーム格納時においては、先端ブーム１
の先端部６の下方端が滑車収納体４の一部に入り
込み、滑車収納体４が先端ブーム１の先端部６の
下方端を一部囲繞する形になる。 Therefore, when the boom is retracted, the tip boom 1
The lower end of the distal end portion 6 of the boom 1 enters a part of the pulley housing 4, and the pulley housing 4 partially surrounds the lower end of the distal end portion 6 of the tip boom 1.
即ち、かかる構成にすることによりブーム格納
長さL0は従来のブーム装置と同じであるが、基
端ブーム１の長さL′1を従来のそれより長くする
ことができ、その結果重ね長さL′2が長くなり、
ブーム伸長長さを従来のものより長くできた。 That is, by adopting such a configuration, the boom retraction length L 0 is the same as that of the conventional boom device, but the length L' 1 of the base end boom 1 can be made longer than that of the conventional boom device, and as a result, the overlapping length can be increased. length L′ 2 becomes longer,
The boom extension length has been made longer than the conventional model.
本考案は以上のように、ブーム装置を、従来の
格納長さと同じでありながらその伸長長さを従来
のそれより長くできるので、クレーン性能を一段
と向上させることができ、この業界において資す
ること大である。 As described above, the present invention allows the boom device to have the same retracted length as the conventional one, but with a longer extended length than the conventional one, thereby further improving the crane performance and making a great contribution to this industry. It is.
第１図は従来のブーム装置、第２図は第１図の
Ａ−Ａ断面図、第３図は本考案に係るブーム装
置、第４図は第３図のＢ−Ｂ断面図である。
１……基端ブーム、２……先端ブーム、３……
シリンダ装置、４……滑車収納体、５……滑車。
1 is a conventional boom device, FIG. 2 is a sectional view taken along line AA in FIG. 1, FIG. 3 is a boom device according to the present invention, and FIG. 4 is a sectional view taken along line BB in FIG. 3. 1... Proximal boom, 2... Tip boom, 3...
Cylinder device, 4... Pulley storage body, 5... Pulley.
Claims (1)
具える先端ブームを基端ブーム内に摺動自在に嵌
挿したブーム装置において、基端ブームの先端部
を先端下方に向つて細長に構成すると共に、滑車
収納体の横巾を先端ブームの先端部の横巾より広
く構成して、これにより先端ブーム格納時に基端
ブームの先端部の下方端が滑車収納体内に一部入
り込むようにしたことを特徴とするブーム装置の
先端部構造。 In a boom device in which a distal boom equipped with a pulley storage body for suspending a hook at the distal end is slidably inserted into the proximal boom, the distal end of the proximal boom is configured to be elongated toward the bottom of the distal end. In addition, the width of the pulley storage body is configured to be wider than the width of the tip of the tip boom, so that the lower end of the tip of the proximal boom partially enters into the pulley storage body when the tip boom is stored. A tip structure of a boom device characterized by:
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP15755081U JPS5860687U (en) | 1981-10-21 | 1981-10-21 | Boom device tip structure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP15755081U JPS5860687U (en) | 1981-10-21 | 1981-10-21 | Boom device tip structure |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS5860687U JPS5860687U (en) | 1983-04-23 |
| JPS627669Y2 true JPS627669Y2 (en) | 1987-02-21 |
Family
ID=29950071
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP15755081U Granted JPS5860687U (en) | 1981-10-21 | 1981-10-21 | Boom device tip structure |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS5860687U (en) |
-
1981
- 1981-10-21 JP JP15755081U patent/JPS5860687U/en active Granted
Also Published As
| Publication number | Publication date |
|---|---|
| JPS5860687U (en) | 1983-04-23 |
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