JPH0460994U - - Google Patents
Info
- Publication number
- JPH0460994U JPH0460994U JP10268690U JP10268690U JPH0460994U JP H0460994 U JPH0460994 U JP H0460994U JP 10268690 U JP10268690 U JP 10268690U JP 10268690 U JP10268690 U JP 10268690U JP H0460994 U JPH0460994 U JP H0460994U
- Authority
- JP
- Japan
- Prior art keywords
- boom
- pin
- telescoping
- adjustment member
- distal end
- 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
- 230000008602 contraction Effects 0.000 claims 2
- 238000004804 winding Methods 0.000 description 1
Landscapes
- Jib Cranes (AREA)
Description
第１図は本考案に係る同時伸縮式ブームの全体
構成を示す断面図、第２図は伸長用ワイヤ及び縮
退用ワイヤの巻回状態を示す説明図、第３図は緊
張装置の構成を示す平面図、第４図は第３図にお
ける−断面図である。
１……同時伸縮式ブーム、２……基端ブーム（
ブーム本体）、３……第１中間ブーム、５……第
２中間ブーム、６……先端ブーム、１１……長孔
、１２……ピン、１３……伸長用シーブ、１５…
…調整部材、１６……ボルト。
Fig. 1 is a sectional view showing the overall configuration of the simultaneous telescopic boom according to the present invention, Fig. 2 is an explanatory view showing the winding state of the extension wire and the retraction wire, and Fig. 3 shows the structure of the tensioning device. The plan view and FIG. 4 are cross-sectional views taken in FIG. 3. 1...Simultaneous telescoping boom, 2...Proximal boom (
boom body), 3...first intermediate boom, 5...second intermediate boom, 6...tip boom, 11...long hole, 12...pin, 13...extension sheave, 15...
...Adjustment member, 16...bolt.
Claims (1)
挿された少なくとも３個の伸縮ブームとからなり
、これら伸縮ブームのうち最先端に位置する先端
ブームが内部にシーブを介して張設されたワイヤ
により最先端から２番目の伸縮ブームの伸縮動作
に伴つて同時に伸縮するように構成された同時伸
縮式ブームにおいて、 前記先端ブームの先端部内側に配設されたシー
ブを回転自在に支持するピンがブームの伸縮方向
に長く形成された長孔に摺動自在に嵌入支持され
、上記ピンには調整部材の一端部が固着されると
ともに、調整部材の他端部にボルトが螺入され、
ボルトの回動により調整部材を介してピンをブー
ムの伸縮方向に摺動可能に構成されたことを特徴
とする同時伸縮式ブームにおけるワイヤ緊張装置
。[Claim for Utility Model Registration] Consisting of a boom body and at least three telescopic booms telescopically inserted into the boom main body, the leading end boom of these telescopic booms has a sheave inside. In a simultaneous telescoping boom configured to simultaneously expand and contract with the telescoping operation of the second telescoping boom from the most distal end by a wire stretched through the sheave disposed inside the distal end portion of the distal end boom; A pin that rotatably supports the boom is slidably fitted into a long hole formed in the direction of expansion and contraction of the boom, and one end of the adjustment member is fixed to the pin, and the other end of the adjustment member is fixed to the pin. The bolt is screwed in,
1. A wire tensioning device for a simultaneous telescoping boom, characterized in that a pin can be slid in the direction of expansion and contraction of the boom via an adjustment member by rotation of a bolt.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1990102686U JP2501141Y2 (en) | 1990-09-28 | 1990-09-28 | Wire tension device for simultaneous telescopic boom |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1990102686U JP2501141Y2 (en) | 1990-09-28 | 1990-09-28 | Wire tension device for simultaneous telescopic boom |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH0460994U true JPH0460994U (en) | 1992-05-26 |
| JP2501141Y2 JP2501141Y2 (en) | 1996-06-12 |
Family
ID=31847141
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP1990102686U Expired - Lifetime JP2501141Y2 (en) | 1990-09-28 | 1990-09-28 | Wire tension device for simultaneous telescopic boom |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP2501141Y2 (en) |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS6023194U (en) * | 1983-07-22 | 1985-02-16 | 株式会社 南星 | Boom extension device for cranes |
| JPS6481797A (en) * | 1987-09-19 | 1989-03-28 | Tadano Tekkosho Kk | Four-stage simultaneous expansion boom section |
-
1990
- 1990-09-28 JP JP1990102686U patent/JP2501141Y2/en not_active Expired - Lifetime
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS6023194U (en) * | 1983-07-22 | 1985-02-16 | 株式会社 南星 | Boom extension device for cranes |
| JPS6481797A (en) * | 1987-09-19 | 1989-03-28 | Tadano Tekkosho Kk | Four-stage simultaneous expansion boom section |
Also Published As
| Publication number | Publication date |
|---|---|
| JP2501141Y2 (en) | 1996-06-12 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| EXPY | Cancellation because of completion of term |