JPH0376958U

JPH0376958U -

Info

Publication number: JPH0376958U
Application number: JP13138289U
Authority: JP
Priority date: 1989-11-10
Filing date: 1989-11-10
Publication date: 1991-08-01
Anticipated expiration: 2004-11-10
Also published as: JPH0741756Y2

Description

[Brief explanation of drawings]

第１図は、従来の高所作業車の説明図、第２図
および第３図はこの考案の高所作業車の要部の説
明図であつて、第２図は、側面図、第３図は、第
２図の平面図である。車両；１、旋回台；２、ブーム支持ブラケツト
；３，３、バケツト；４、ブーム；５、起伏支点
ピン；６、起伏シリンダー；７、上部レベリング
シリンダー；８、下部レベリングシリンダー；９
、延出ブラケツト；１０。 FIG. 1 is an explanatory diagram of a conventional aerial work vehicle, FIGS. 2 and 3 are explanatory diagrams of the main parts of the aerial work vehicle of this invention, and FIG. 2 is a side view, and FIG. The figure is a plan view of FIG. 2. Vehicle; 1. Swivel platform; 2. Boom support bracket; 3, 3. Bucket; 4. Boom; 5. Lifting fulcrum pin; 6. Lifting cylinder; 7. Upper leveling cylinder;
, extension bracket; 10.

Claims

[Scope of utility model registration request]

A pair of left and right boom support brackets are erected on a swivel base that is attached to the vehicle so that it can be rotated freely.
With the proximal end of the boom, to which a bucket is attached to the tip of the boom, positioned between the pair of left and right boom support brackets, the base end of the boom is movably attached to the pair of left and right boom support brackets. The boom is pivotally connected by a hoisting fulcrum pin, and the boom can be driven up and down by a hoisting cylinder. Furthermore, an upper leveling cylinder is connected between the tip of the boom and a suitable position of the bucket, and an upper leveling cylinder is connected between the boom support bracket and the proximal end of the boom. A lower leveling cylinder is disposed between the appropriate positions with both ends thereof being pivotally connected, and the upper and lower leveling cylinders are hydraulically interlocked so that the bucket is always kept in a horizontal state regardless of whether the boom is driven to raise or lower. An aerial work vehicle configured to maintain the boom, the base being attached to the base end of the boom in a position that does not interfere with the boom support bracket over the entire range of the boom, and the tip of the boom being An extension bracket is provided that extends toward the hoisting fulcrum pin so as to be positioned outwardly of the boom support bracket over at least a portion of the entire hoisting range of the boom, and the lower leveling cylinder is pivotably mounted to the boom side. An aerial work vehicle characterized in that the connection is made at the tip of the extending bracket.