JPS6313994U - - Google Patents
Info
- Publication number
- JPS6313994U JPS6313994U JP10296787U JP10296787U JPS6313994U JP S6313994 U JPS6313994 U JP S6313994U JP 10296787 U JP10296787 U JP 10296787U JP 10296787 U JP10296787 U JP 10296787U JP S6313994 U JPS6313994 U JP S6313994U
- Authority
- JP
- Japan
- Prior art keywords
- pair
- bottom plate
- edge
- boom
- side plates
- 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
- 238000005452 bending Methods 0.000 claims 1
- 230000003014 reinforcing effect Effects 0.000 claims 1
- 238000010586 diagram Methods 0.000 description 2
- 230000002787 reinforcement Effects 0.000 description 1
Landscapes
- Jib Cranes (AREA)
Description
第１図は本考案の１実施例を示す外側ブームの
説明図、第２図は内側ブームの説明図である。
１；外側ブーム、２；内側ブーム、３；先端補
強板、４；スライドプレート。
FIG. 1 is an explanatory diagram of an outer boom showing one embodiment of the present invention, and FIG. 2 is an explanatory diagram of an inner boom. 1; Outer boom, 2; Inner boom, 3; Tip reinforcement plate, 4; Slide plate.
Claims (1)
方向に沿う上下端部を内方に折曲げそこに縁部ｃ
′，ｃ′を形成した左右一対の縦長の側板ｃ，ｃ
からなり前記左右一対の側板ｃ，ｃをその縁部ｃ
′，ｃ′が互に対向するよう配置した上で当該左
右一対の側板ｃ，ｃの上端部の縁部ｃ′の折曲げ
陵線部および下端部の縁部ｃ′の折曲げ陵線部を
夫々前記天板ａおよび底板ｂの左右側端部に溶接
して、全体として筒状に構成した外側ブームの先
端構造であつて前記外側ブームの先端部において
前記左右一対の側板の外側に面接して天板および
底板間に配置された左右一対の先端補強板を少な
くとも対応する側板および底板の側端部に溶接固
着すると共に、外側ブームの先端部における前記
両側板の下側の縁部ｃ′，ｃ′を、当該縁部の折
曲げ陵線近傍まで切欠き、外側ブームに伸縮自在
に嵌挿される内側ブームを伸縮自在に支承する左
右一対のスライドプレートを前記切欠き部に位置
する底板上に配置してあることを特徴とする伸縮
ブームにおける外側ブームの先端構造。 The vertically long top plate a, the vertically long bottom plate b, and the upper and lower ends along the longitudinal direction are bent inward and an edge c is formed there.
A pair of left and right vertically long side plates c, c forming ', c'
The pair of left and right side plates c and c are formed by an edge c.
', c' are arranged so as to face each other, and the bent ridge line part of the upper edge c' of the left and right pair of side plates c, c and the bent ridge line part of the lower edge part c' are welded to the left and right ends of the top plate a and the bottom plate b, respectively, to form a cylindrical shape as a whole. A pair of left and right tip reinforcing plates arranged between the top plate and the bottom plate are welded and fixed to at least the side edges of the corresponding side plate and bottom plate, and the lower edges c of the side plates at the tip of the outer boom are fixed. ', c' are notched to the vicinity of the bending ridge line of the edge, and a pair of left and right slide plates that telescopically support an inner boom that is telescopically inserted into the outer boom are located in the notched parts of the bottom plate. A tip structure of an outer boom in a telescopic boom, characterized in that the outer boom is disposed on the top of the telescopic boom.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP10296787U JPS6313994U (en) | 1987-07-03 | 1987-07-03 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP10296787U JPS6313994U (en) | 1987-07-03 | 1987-07-03 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS6313994U true JPS6313994U (en) | 1988-01-29 |
Family
ID=30975094
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP10296787U Pending JPS6313994U (en) | 1987-07-03 | 1987-07-03 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS6313994U (en) |
-
1987
- 1987-07-03 JP JP10296787U patent/JPS6313994U/ja active Pending
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