JPH01164296U

JPH01164296U -

Info

Publication number: JPH01164296U
Application number: JP6021288U
Authority: JP
Priority date: 1988-05-06
Filing date: 1988-05-06
Publication date: 1989-11-16
Anticipated expiration: 2003-05-06
Also published as: JPH0649588Y2

Description

[Brief explanation of the drawing]

第１図は本考案の実施例の要部側面図、第２図
は第１図に示す下部フレームの要部平面図、第３
図は第２図における―線断面図、第４図、第
５図、第６図及び第７図は第１図に示す作業バス
ケツトの各々正面図、平面図、側面図及び背面図
、また第８図は第３図における―線拡大断面
図である。主要符号の説明、２……伸縮はしご、３……ジ
ヤツキアウトリガ装置、５……作業バスケツト、
６……下部フレーム、７……上部フエンス、１３
……支柱、１４……中間支柱、１７……調節ロツ
ド、２３……ロツク溝、４０……平衡油圧シリン
ダ、４２……駆動軸、４４……アーム、４６……
駆動アーム、４７……電気シリンダ、４９……筒
体、５０……スライダ、５１……スプリング、５
２……ストツパ、５５……カム、５６……カムロ
ツド、６０……カム駆動アーム。 Fig. 1 is a side view of the main part of the embodiment of the present invention, Fig. 2 is a plan view of the main part of the lower frame shown in Fig. 1, and Fig. 3 is a side view of the main part of the embodiment of the present invention.
The figure is a sectional view taken along the line -- in FIG. 2, and FIGS. 4, 5, 6, and 7 are front, top, side, and rear views of the work basket shown in FIG. FIG. 8 is an enlarged sectional view taken along the line - in FIG. 3. Explanation of main symbols, 2... Telescopic ladder, 3... Jacket outrigger device, 5... Work basket,
6...Lower frame, 7...Upper fence, 13
...Strut, 14...Intermediate support, 17...Adjustment rod, 23...Lock groove, 40...Balance hydraulic cylinder, 42...Drive shaft, 44...Arm, 46...
Drive arm, 47... Electric cylinder, 49... Cylindrical body, 50... Slider, 51... Spring, 5
2...stopper, 55...cam, 56...cam rod, 60...cam drive arm.

Claims

[Scope of Claim for Utility Model Registration] (1) In an aerial work vehicle for firefighting that has a work basket at the end of the boom, the work basket is pivoted to the end of the boom in a balanced manner, and the lower frame is capable of raising and lowering the work basket. What is claimed is: 1. An aerial work vehicle for fire fighting, comprising an upper fence that is pivotably connected to the lower frame, and a fence driving means for swinging the upper fence with respect to the lower frame. (2) The aerial firefighting work vehicle according to claim 1, wherein the fence driving means automatically raises the upper fence in conjunction with the extending operation of an outrigger device in the work vehicle. (3) The fence driving means is composed of a driving link whose base is pivotally connected to the lower frame, an intermediate link whose end is pivotally connected to the end of the driving link, and whose base is pivotally connected to the upper fence, and an upper fence. A claim comprising a four-bar link mechanism formed from a fixed link constituted by a driven link and a lower frame, and an actuator provided on the lower frame and swinging the driving link within the range in which the upper fence is raised and lowered. The firefighting aerial work vehicle described in 1 or 2. (4) The firefighting aerial work vehicle according to claim 1, further comprising a fence locking device that automatically locks the upper fence so that it cannot swing when the upper fence is erected. (5) The fence locking device includes a guide member fixed to the lower frame, a guide member that is movably guided in the axial direction, and is biased toward an end of the guide member via a spring, and an upper fence is attached to the end of the guide member. a slider having a stopper that can be engaged with the upper fence and a cam follower at the base; a cam that is in contact with the cam follower; cam driving means for displacing the guide member in the end direction or the base direction depending on whether the guide member is in the upright state or in the non-upright state, and disposing the stopper in a position where it engages with the upper fence or a position where it separates from the upper fence, respectively. , The aerial fire fighting vehicle according to claim 4.