JPH0243781U

JPH0243781U -

Info

Publication number: JPH0243781U
Application number: JP12387988U
Authority: JP
Priority date: 1988-09-20
Filing date: 1988-09-20
Publication date: 1990-03-26

Description

[Brief explanation of drawings]

第１図はこの考案にかかるアイドラのたて断面
図、第２図はクローラ式下部走行体を示す側面図
、第３図は第２図のＡ−Ａより見た図、第４図は
従来技術のアイドラのたて断面図である。１……下部走行体、２……トラツクフレーム、
３，２０……アイドラ、１９，２１……デイスク
部材、２２……穴部、２３……プラグ部材、２４
……発泡体。 Fig. 1 is a vertical sectional view of the idler according to this invention, Fig. 2 is a side view showing the crawler type undercarriage, Fig. 3 is a view taken from A-A in Fig. 2, and Fig. 4 is a conventional one. FIG. 3 is a vertical cross-sectional view of the idler of the technology. 1... lower running body, 2... truck frame,
3, 20... Idler, 19, 21... Disk member, 22... Hole, 23... Plug member, 24
...foam.

Claims

[Scope of utility model registration request]

An idler that is rotatably supported on a slide block shaft at the front end of a truck frame, and is assembled by combining a rim member forming the outer periphery of the idler and a center boss member with a pair of disk members. In this step, a hole for injecting a fluid material is formed in a part of the idler to communicate between the outside and the inside of the idler, and a viscous sound-absorbing foam base material is injected into the idler from the outside of the idler through the hole. and the sound-absorbing foam base material is foamed and expanded inside the idler, and the sound-absorbing foam base material is configured as a foam that can attenuate noise and vibration and is loaded inside the idler. Idler structure.