JPH034184U

JPH034184U -

Info

Publication number: JPH034184U
Application number: JP6306189U
Authority: JP
Priority date: 1989-05-31
Filing date: 1989-05-31
Publication date: 1991-01-16

Description

[Brief explanation of drawings]

第１図は本考案に係るクレーン車のフツク格納
装置を搭載したクレーン車の説明図、第２図ａ，
ｂはそれぞれ本考案のフツク掛起伏検出器の動作
状態の説明図である。同図・ｃは本考案のフツク
過巻防止装置に用いる回路図の一例である。第３
図ａ，ｂはそれぞれ従来例のクレーン車の説明図
、フツク過巻防止装置に用いる回路図の一例であ
る。第４図ａ，ｂはそれぞれ本考案及び従来例に
おいて用いられるブームヘツド側面に設けられた
フツク上限検出器の動作状態の説明図である。１……クレーン車、１ａ……車台、１ｂ……タ
ーンテーブル、２……ブーム、２ａ……ブームヘ
ツド、３……ウインチ、３ａ……ワイヤー、４…
…フツク、５……フツク過巻防止装置、５ａ……
フツク上限検出器、５ｂ……重り、５ｃ……接点
、５ｄ……警報器、６……フツク掛、７……フツ
ク掛起伏検出器、７ａ……接触部、７ｂ……接点
。 Figure 1 is an explanatory diagram of a crane truck equipped with a crane truck hook storage device according to the present invention, Figure 2a,
b is an explanatory diagram of the operating state of the hook-hanging undulation detector of the present invention; Figure c is an example of a circuit diagram used in the hook overwinding prevention device of the present invention. Third
Figures a and b are an explanatory view of a conventional crane truck and an example of a circuit diagram used in a hook overwinding prevention device, respectively. FIGS. 4a and 4b are explanatory views of the operating state of the hook upper limit detector provided on the side surface of the boom head used in the present invention and the conventional example, respectively. 1... Crane truck, 1a... Chassis, 1b... Turntable, 2... Boom, 2a... Boom head, 3... Winch, 3a... Wire, 4...
...Hook, 5...Hook overwinding prevention device, 5a...
Hook upper limit detector, 5b... Weight, 5c... Contact, 5d... Alarm, 6... Hook hook, 7... Hook hook up and down detector, 7a... Contact portion, 7b... Contact.

Claims

[Scope of utility model registration request]

Equipped with a hook suspended from the tip of the boom by a winch wire that is wound up and fed out by a winch, and equipped with a hook on the undercarriage to which the hook is hung when the hook is stored, and the hook is fixed relative to the tip of the boom. A crane truck is equipped with a hook upper limit detector that detects when the user has approached a distance of ON due to the condition of the hook
- A hook storage device for a crane truck, characterized in that it is provided with an OFF switch, and the switch is configured to interrupt a circuit of an alarm device activated by a signal from the hook upper limit detector.