JPH0444294U

JPH0444294U -

Info

Publication number: JPH0444294U
Application number: JP8618190U
Authority: JP
Priority date: 1990-08-16
Filing date: 1990-08-16
Publication date: 1992-04-15

Description

[Brief explanation of the drawing]

第１図は、本考案に係るプラツトフオーム昇降
用マストの側面断面図、第２図は、上記プラツト
フオーム昇降用マストの下端部を示した側面図（
第３図における−線断面図）、第３図は、第
２図における−線断面図、第４図は、上記プ
ラツトフオーム昇降用マストを備えた自走式高所
作業車の斜視図、第５図は、従来のプラツトフオ
ーム昇降用マストの概略図（側面図）である。３，２０３……プラツトフオーム昇降用マスト
、４，２０４……プラツトフオーム、３１，２３
１……第１マスト部材、３２，２３２……第２マ
スト部材、３３，２３３……第３マスト部材、３
４，２３４……プラツトフオーム取付けマスト部
材、４０，２４０……伸縮シリンダ、５１，２５
１……チエーン、５２，２５２……スプロケツト
、５３……巻掛け長調節棒、６１，２６１……ガ
イドローラ、６２……回転軸部材。 FIG. 1 is a side cross-sectional view of a platform lifting mast according to the present invention, and FIG. 2 is a side view showing the lower end of the platform lifting mast (
3 is a sectional view taken along the line - in FIG. 2, FIG. 4 is a perspective view of a self-propelled aerial work vehicle equipped with the platform lifting mast, FIG. 5 is a schematic diagram (side view) of a conventional platform lifting mast. 3,203... Platform lifting mast, 4,204... Platform, 31,23
1...First mast member, 32,232...Second mast member, 33,233...Third mast member, 3
4,234... Platform mounting mast member, 40,240... Telescopic cylinder, 51,25
1... Chain, 52, 252... Sprocket, 53... Winding length adjustment rod, 61, 261... Guide roller, 62... Rotating shaft member.

Claims

[Claims for Utility Model Registration] A first mast member, a second mast member that is vertically movable with respect to the first mast member, and a second mast member that is vertically movable with respect to the first mast member. a third mast member that is vertically movable with respect to the second mast member, one end of which is on the first mast member side and the other end of which is on the third mast member side;
attached to the mast member side and said second
The third mast member is wound around a winding wheel attached to a mast member, and the third mast member is moved relative to the second mast member in accordance with the vertical movement of the second mast member relative to the first mast member by the vertical movement driving means. and a guide roller that guides the third mast member in the vertical direction with respect to the second mast member. A mast for raising and lowering a platform according to the movement of the platform, wherein a rotating shaft member rotatably supporting the guide roller is attached to the third mast member, and the rotating shaft member is attached to the rotating shaft member. A platform lifting mast characterized in that the other end of the hanging member is attached.