JPS63154600U - - Google Patents
Info
- Publication number
- JPS63154600U JPS63154600U JP4888587U JP4888587U JPS63154600U JP S63154600 U JPS63154600 U JP S63154600U JP 4888587 U JP4888587 U JP 4888587U JP 4888587 U JP4888587 U JP 4888587U JP S63154600 U JPS63154600 U JP S63154600U
- Authority
- JP
- Japan
- Prior art keywords
- moment
- boom
- lower boom
- work vehicle
- aerial work
- 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
- 238000005452 bending Methods 0.000 claims description 7
- 230000008602 contraction Effects 0.000 claims 1
- 238000010586 diagram Methods 0.000 description 3
Landscapes
- Jib Cranes (AREA)
- Forklifts And Lifting Vehicles (AREA)
Description
第１図乃至第３図は本考案に係る屈伸型高所作
業車の安全装置の一実施例を示すもので、第１図
は屈伸型高所作業車の一例を示す説明図、第２図
は安全装置の構成を示すブロツク図、第３図ａ，
ｂは従来の屈伸高所作業車のブーム作動範囲を示
す概略図である。
１……屈伸型高所作業車、２……車体、３……
アウトリガ、４……ターンテーブル、５……ロア
ブーム、６……起伏シリンダー、７……アツパブ
ーム、８……屈伸シリンダー、９……作業台、１
０……アツパブーム長検出器、１１……屈伸角検
出器、１２……ロアブーム長検出器、１３……起
伏角検出器、１４……起伏軸力検出器、１５……
規制モーメント記憶回路、１６……モーメント方
向判別器、１７……規制手段、１８……規制手段
、１９……モーメント比較器。
Figures 1 to 3 show an embodiment of the safety device for a bending type aerial work vehicle according to the present invention, and Fig. 1 is an explanatory diagram showing an example of a bending type aerial work vehicle. is a block diagram showing the configuration of the safety device, Figure 3a,
b is a schematic diagram showing the boom operating range of a conventional bending/extending aerial work vehicle. 1...Bending type aerial work vehicle, 2...Vehicle body, 3...
Outrigger, 4...Turntable, 5...Lower boom, 6...Luffing cylinder, 7...Top boom, 8...Bending cylinder, 9...Workbench, 1
0... Upper boom length detector, 11... Bending angle detector, 12... Lower boom length detector, 13... Luffing angle detector, 14... Luffing axial force detector, 15...
Regulation moment storage circuit, 16... Moment direction discriminator, 17... Regulation means, 18... Regulation means, 19... Moment comparator.
Claims (1)
ムの先端に屈伸及び伸縮自在に枢支されたアツパ
ブームと、該アツパブームの先端に作業台を備え
、かつ前記ロアブームの起伏軸力及びブームの吊
り上げ荷重より実モーメントを求め、該実モーメ
ントと予め設定されている規制モーメントとを比
較して限界モーメントを出力するモーメントリミ
ツタを備えた屈伸型高所作業車に於いて、前記ロ
アブームの起伏軸力を次段のモーメント方向判別
器に入力し、該モーメント方向判別器で判別した
モーメント方向を示す出力が正の場合、前記ロア
ブームの起伏角の広げ、前記アツパブームの伸し
、前記ロアブームの縮めを規制し、前記モーメン
ト方向を示す出力が負の場合、前記ロアブームの
起伏角の狭め、前記ロアブームの伸し、前記アツ
パブームの縮めを規制すべく構成したことを特徴
とする屈伸型高所作業車の安全装置。 A lower boom that can be undulated and retracted, an atsupah boom that is pivotably supported at the tip of the lower boom so as to be able to bend and expand, and a work platform at the tip of the atsupah boom. In a bending type aerial work vehicle equipped with a moment limiter that outputs a limit moment by comparing the actual moment and a preset limit moment, the axial force of the lower boom is determined by If the moment direction discriminator inputs the moment direction and the output indicating the moment direction discriminated by the moment direction discriminator is positive, the expansion of the luffing angle of the lower boom, the extension of the upper boom, and the retraction of the lower boom are restricted, and the moment 1. A safety device for a bendable and extendable aerial work vehicle, characterized in that, when an output indicating a direction is negative, narrowing of the undulation angle of the lower boom, extension of the lower boom, and contraction of the upper boom are restricted.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1987048885U JP2537379Y2 (en) | 1987-03-31 | 1987-03-31 | Safety device for bending and aerial work vehicles |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1987048885U JP2537379Y2 (en) | 1987-03-31 | 1987-03-31 | Safety device for bending and aerial work vehicles |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS63154600U true JPS63154600U (en) | 1988-10-11 |
| JP2537379Y2 JP2537379Y2 (en) | 1997-05-28 |
Family
ID=30870837
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP1987048885U Expired - Lifetime JP2537379Y2 (en) | 1987-03-31 | 1987-03-31 | Safety device for bending and aerial work vehicles |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP2537379Y2 (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO1995013241A1 (en) * | 1993-11-08 | 1995-05-18 | Komatsu Ltd. | Lifting load and tipping moment detecting device for a mobile crane |
| FR2936237A1 (en) * | 2008-09-23 | 2010-03-26 | Andre Rene Dechambenoit | Crane for handling e.g. rotor of helicopter, has post including secondary arm mounted on primary arm, where post is designed to be deployed by pivoting of arms along opposed rotation directions respectively |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5680399U (en) * | 1979-11-27 | 1981-06-29 | ||
| JPS60148795U (en) * | 1984-03-09 | 1985-10-02 | 愛知車輌株式会社 | Fall prevention device for direct bending/extending aerial work vehicles |
-
1987
- 1987-03-31 JP JP1987048885U patent/JP2537379Y2/en not_active Expired - Lifetime
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5680399U (en) * | 1979-11-27 | 1981-06-29 | ||
| JPS60148795U (en) * | 1984-03-09 | 1985-10-02 | 愛知車輌株式会社 | Fall prevention device for direct bending/extending aerial work vehicles |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO1995013241A1 (en) * | 1993-11-08 | 1995-05-18 | Komatsu Ltd. | Lifting load and tipping moment detecting device for a mobile crane |
| US5711440A (en) * | 1993-11-08 | 1998-01-27 | Komatsu Ltd. | Suspension load and tipping moment detecting apparatus for a mobile crane |
| FR2936237A1 (en) * | 2008-09-23 | 2010-03-26 | Andre Rene Dechambenoit | Crane for handling e.g. rotor of helicopter, has post including secondary arm mounted on primary arm, where post is designed to be deployed by pivoting of arms along opposed rotation directions respectively |
Also Published As
| Publication number | Publication date |
|---|---|
| JP2537379Y2 (en) | 1997-05-28 |
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