JPH03108064U

JPH03108064U -

Info

Publication number: JPH03108064U
Application number: JP1656390U
Authority: JP
Priority date: 1990-02-20
Filing date: 1990-02-20
Publication date: 1991-11-07
Anticipated expiration: 2005-02-20
Also published as: JP2501437Y2

Description

[Brief explanation of drawings]

図面は本考案の実施例を示し、第１図は側面図
、第２図は要部拡大側面図、第３図は４節リンク
機構の説明図、第４図は作業部本体の俯仰角度表
示装置の斜視図、第５図は第２図の−視断面
図、第６図は第５図と同じ方向から見た作用説明
図である。１……走行機体、３，３……ブーム、４……バ
ケツト、７……作業部シリンダ、６……駆動用４
節リンク機構、８……中間リンク、９，２１……
連杆、２０……表示用４節リンク機構、１０，１
１，１２，１３，１８，２２，２３……連結点、
２４……ブームシリンダ、１４……支持体、１５
……連結部、１６……前表示部、１７……後表示
部、１９……調節ねじ、３２……水平マーカ、２
８，２９……平行リンク。 The drawings show an embodiment of the present invention; Fig. 1 is a side view, Fig. 2 is an enlarged side view of the main parts, Fig. 3 is an explanatory diagram of the four-bar link mechanism, and Fig. 4 is an elevation angle display of the main body of the working part. FIG. 5 is a perspective view of the apparatus, FIG. 5 is a cross-sectional view taken from - in FIG. 2, and FIG. 6 is an explanatory diagram of the operation seen from the same direction as FIG. 1... Traveling body, 3, 3... Boom, 4... Bucket, 7... Working part cylinder, 6... Drive 4
Knot link mechanism, 8... intermediate link, 9, 21...
Link, 20...Four-bar link mechanism for display, 10,1
1, 12, 13, 18, 22, 23... connection point,
24...Boom cylinder, 14...Support, 15
... Connecting section, 16 ... Front display section, 17 ... Rear display section, 19 ... Adjustment screw, 32 ... Horizontal marker, 2
8,29...Parallel link.

Claims

[Scope of utility model registration request]

A boom that can be raised and lowered is attached to the traveling aircraft, and a working part body such as a bucket is attached to the tip of the boom.
In a shovel type excavator configured to be driven vertically by a joint link mechanism and a working part cylinder, an intermediate link in the four-part driving link mechanism is pivotally connected to the boom, and the length of the intermediate link is set to the working part. The driving four-bar link mechanism is formed in an isosceles trapezoid shape so that it is longer than the length of the vertical link on the main body side, and the length of the horizontal link connecting the intermediate link and the vertical link is equal. The proximal end of a support for displaying the elevation angle of the working part main body is pivotally connected to the boom, and the length of the horizontal link connecting the support and the midway part of the intermediate link is equal; Configuring a four-bar display link mechanism in an isosceles trapezoid shape in which the length of the vertical link on the body side is shorter than the length of the vertical link corresponding to the midway part of the intermediate link,
The length of the equal-length horizontal links in the display four-bar linkage mechanism is formed to be longer than the equal-length horizontal links in the drive four-bar linkage mechanism, so that the elevation angle of the working part main body and the elevation angle of the support body are adjusted. 1. An elevation angle display device for a working part main body in a shovel type excavator, characterized in that the angles of elevation and elevation of a working part main body of a shovel type excavator are configured so that the angles are substantially equal to each other.