JPH01113039U

JPH01113039U -

Info

Publication number: JPH01113039U
Application number: JP806788U
Authority: JP
Priority date: 1988-01-27
Filing date: 1988-01-27
Publication date: 1989-07-28

Description

[Brief explanation of the drawing]

第１図〜第４図は本考案の実施例を示し、第１
図は正面図、第２図は乗降時の動作説明図、第３
図は第２図の部拡大図、第４図はシリンダーの
回路図、第５図、第６図及び第７図、第８図はそ
れぞれ異なる従来例の正面図及び前面図である。１０は運転室、１１は車体、１３はラダー、１
８は第１インク、１９は第２リンク。 1 to 4 show embodiments of the present invention.
The figure is a front view, the second figure is an explanatory diagram of the operation when getting on and off, and the third figure is a front view.
The figure is an enlarged view of a portion of FIG. 2, FIG. 4 is a circuit diagram of a cylinder, and FIGS. 5, 6, 7, and 8 are a front view and a front view of different conventional examples, respectively. 10 is the driver's cabin, 11 is the vehicle body, 13 is the rudder, 1
8 is the first ink, 19 is the second link.

Claims

[Scope of utility model registration request]

A first link 18 and a second link support an upper part of a rudder 13 in a vertically movable manner at the front upper part of a vehicle body 11 provided with a driver's cab 10, and are connected to the rudder 13 and the vehicle body 11 so as to be flexible. The link 20 is attached so that the ladder 13 can rotate between a substantially vertical position and a forwardly protruding position, and the ladder 13 is attached between the second link 20 and the ladder 13.
1. A lifting ladder device for a large dump truck for construction machinery, characterized in that a biasing mechanism for holding the truck in the substantially vertical position is attached.