JPH0365767U

JPH0365767U -

Info

Publication number: JPH0365767U
Application number: JP12479889U
Authority: JP
Priority date: 1989-10-24
Filing date: 1989-10-24
Publication date: 1991-06-26
Anticipated expiration: 2004-03-30
Also published as: JPH0612064Y2

Description

[Brief explanation of drawings]

第１図は使用状態を示す概略側面図、第２図は
移動式カウンターウエイト装置を示す側面図、第
３図は同平面図、第４図は同一部切り欠き正面図
、第５図はカウンターウエイトを前位置に移動さ
せた状態での縦断側面図、第６図はカウンターウ
エイトを前位置に移動させると共にガイドレール
を折り畳んだ状態での一部切り欠き平面図、第７
図は固定手段の縦断側面図、第８図は固定手段と
ガイドレールとを示す縦断正面図である。４……旋回台（車体）、６……移動式カウンタ
ーウエイト装置、７……カウンターウエイト、８
……ガイドレール、９……固定レール部分、１０
……可動レール部分、１２……可動レール部分軸
支用垂直支軸、１７，１８……角棒状レール材、
１９……スライドシユー、２１……固定手段、３
２……駆動手段、３３……第一中折れ２連リンク
、３４……流体圧シリンダー、４１……第二中折
れ２連リンク。 Fig. 1 is a schematic side view showing the state of use, Fig. 2 is a side view showing the mobile counterweight device, Fig. 3 is a plan view of the same, Fig. 4 is a partially cutaway front view of the same, Fig. 5 is a counter weight device. Fig. 6 is a longitudinal side view with the weight moved to the front position; Fig. 6 is a partially cutaway plan view with the counterweight moved to the front position and the guide rail folded; Fig. 7
The figure is a longitudinal side view of the fixing means, and FIG. 8 is a longitudinal front view showing the fixing means and the guide rail. 4... Swivel base (vehicle body), 6... Mobile counterweight device, 7... Counterweight, 8
... Guide rail, 9 ... Fixed rail part, 10
...Movable rail part, 12...Vertical support shaft for supporting the movable rail part, 17, 18...Square bar-shaped rail material,
19...Slide show, 21...Fixing means, 3
2... Drive means, 33... First double folded link, 34... Fluid pressure cylinder, 41... Second double folded link.

Claims

[Scope of utility model registration request]

a guide rail connected from the vehicle body; a counterweight supported by the guide rail so as to be movable between a front position close to the vehicle body and a rear position away from the vehicle body; and a driving means for moving the counterweight, and the driving means includes a double center-fold link connecting the vehicle body side and the counterweight, and a center-fold double link that connects the vehicle body side and the counterweight.
and a cylinder that pushes and pulls the counterweight by opening and closing the link, and when the center-fold double link is closed and the counterweight is moved to the front position, the center-fold double link is moved to the front position. A movable counterweight device comprising a recessed portion into which substantially the entire portion of the counterweight is inserted, in a rear side portion of the counterweight.