JPH0453787U - - Google Patents
Info
- Publication number
- JPH0453787U JPH0453787U JP9708490U JP9708490U JPH0453787U JP H0453787 U JPH0453787 U JP H0453787U JP 9708490 U JP9708490 U JP 9708490U JP 9708490 U JP9708490 U JP 9708490U JP H0453787 U JPH0453787 U JP H0453787U
- Authority
- JP
- Japan
- Prior art keywords
- jib
- attached
- connecting pin
- limit switch
- boom
- 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
Landscapes
- Jib Cranes (AREA)
Description
第１図は、移動式クレーンの全体図を示し、同
図ａはその平面図、同図ｂはその側面図である。
第２図は本考案の実施例である電気回路を示し、
同図ａはクレーが動作できない回路状態を示す図
、同図ｂはクレーンが動作できる回路状態を示す
図、第３図及び第４図はリミツトスイツチを取付
けた実施例を示す図で、第３図ａはジブ回動前の
状態、同図ｂはジブを張出し位置とした図、第４
図ａは連結ピン締付け前のリミツトスイツチと連
結ピンとの関係図、同図ｂは連結ピン締付け後の
リミツトスイツチと連結ピンとの関係図、第５図
はリミツトスイツチを取付けない従来例の連結ピ
ン周りを示す図で、同図ａは連結ピン締め付け前
、同図ｂは締め付け後を示す図である。
１，２……リミツトスイツチ、１０……ブーム
、１１……ジブ、１２……支点ピン、１３……連
結ピン。
FIG. 1 shows an overall view of a mobile crane, with FIG. 1A being a plan view thereof and FIG. 1B being a side view thereof.
FIG. 2 shows an electric circuit which is an embodiment of the present invention,
Figure a shows a circuit state in which the crane cannot operate, Figure b shows a circuit state in which the crane can operate, Figures 3 and 4 show an example in which a limit switch is installed, and Figure 3 shows a circuit state in which the crane cannot operate. Figure a shows the state before the jib is rotated, figure b shows the jib in the extended position, and figure 4
Figure a is a relationship diagram between the limit switch and the connection pin before the connection pin is tightened, Figure b is a relationship diagram between the limit switch and the connection pin after the connection pin is tightened, and Figure 5 is a diagram showing the area around the connection pin in a conventional example without the limit switch attached. Figure a shows the connection pin before it is tightened, and figure b shows it after it is tightened. 1, 2... Limit switch, 10... Boom, 11... Jib, 12... Fulcrum pin, 13... Connection pin.
Claims (1)
たり支点ピンが装着されたとき、または支点ピン
が装着されてジブが張出し位置になつたときに作
動するリミツトスイツチと、連結ピンが確実にブ
ームとジブとを連結するごとく装着されたときに
作動するリミツトスイツチとを具えるとともに前
記両リミツトスイツチが作動したときのみ前記ク
レーンを作業可能状態とする電気回路を設けたこ
とを特徴とする連結ピン装着確認装置。 A limit switch that operates when a fulcrum pin is attached when assembling a jib to a mobile crane's boom, or when a fulcrum pin is attached and the jib is in the extended position, and a connecting pin that securely connects the boom and jib. A connecting pin attachment confirmation device comprising: a limit switch that is activated when the connecting pin is properly attached; and an electric circuit that enables the crane to operate only when both of the limit switches are activated.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP9708490U JP2520412Y2 (en) | 1990-09-14 | 1990-09-14 | Connection pin attachment confirmation device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP9708490U JP2520412Y2 (en) | 1990-09-14 | 1990-09-14 | Connection pin attachment confirmation device |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH0453787U true JPH0453787U (en) | 1992-05-08 |
| JP2520412Y2 JP2520412Y2 (en) | 1996-12-18 |
Family
ID=31837154
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP9708490U Expired - Fee Related JP2520412Y2 (en) | 1990-09-14 | 1990-09-14 | Connection pin attachment confirmation device |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP2520412Y2 (en) |
-
1990
- 1990-09-14 JP JP9708490U patent/JP2520412Y2/en not_active Expired - Fee Related
Also Published As
| Publication number | Publication date |
|---|---|
| JP2520412Y2 (en) | 1996-12-18 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| R250 | Receipt of annual fees |
Free format text: JAPANESE INTERMEDIATE CODE: R250 |
|
| LAPS | Cancellation because of no payment of annual fees |