JPH0380159U

JPH0380159U -

Info

Publication number: JPH0380159U
Application number: JP14215889U
Authority: JP
Priority date: 1989-12-07
Filing date: 1989-12-07
Publication date: 1991-08-16

Description

[Brief explanation of the drawing]

第１Ａ図は本考案に係る履帯シールの一実施例
を示し、セツト前の状態の断面図、第１Ｂ図は同
セツト状態を示す断面図、第２Ａ図は履帯の概略
説明図、第２Ｂ図は第２Ａ図Ａ−Ａ断面で履帯連
結部における従来の履帯シールの一例を示す断面
図、第３図ａは従来にもとづくブツシユ反転前後
のシールリツプ当り面の説明図、ｂは従来技術に
もとづくブツシユ外周摩耗とシールリツプ当り面
の説明図、ｃは従来技術にもとづくブツシユ端面
摩耗状態図である。１Ｌ，１Ｒ……内側リンク、２……ブツシユ、
２ａ……ブツシユ端面、２ｂ……シールリツプの
当り面、３……軸ピン、３ａ……オイル封入孔、
４Ｌ，１Ｒ……外側リンク、５……摺動面、６…
…カウンタボア、Ｓ，Ｓ′……履帯シール、Ｓ_１……リンク側シールリングユニツト、Ｓ_２……ブ
ツシユ側シールリングユニツト、７……リンク側
シールリング、８……負荷リング、９……シール
面、１０……リング溝、１１ａ，１１ｂ……ゴム
リング、１２……ブツシユ側シールリング。 Fig. 1A shows an embodiment of the crawler track seal according to the present invention; Fig. 1B is a sectional view showing the same set state; Fig. 2A is a schematic explanatory diagram of the track; Fig. 2B 2A is a sectional view showing an example of a conventional crawler seal at a crawler linking portion, taken along the line A-A in FIG. 2A, FIG. An explanatory diagram of the outer circumferential wear and the contact surface of the seal lip, and c is a diagram of the state of wear on the bush end face based on the prior art. 1L, 1R...inner link, 2...butsuyu,
2a... Bush end surface, 2b... Seal lip contact surface, 3... Shaft pin, 3a... Oil filling hole,
4L, 1R...outer link, 5...sliding surface, 6...
...Counterbore, S, S'...Crawler seal, S ₁ ... Link side seal ring unit, S ₂ ... Bush side seal ring unit, 7 ... Link side seal ring, 8 ... Load ring, 9 ... Seal surface, 10 ... Ring groove, 11a, 11b ... Rubber Ring, 12...Button side seal ring.

Claims

[Scope of utility model registration request]

In the connecting part of the crawler track, which is composed of a large number of links that are pivotally connected in an endless manner through shaft pins and bushes, and track plates are attached to each of these links with bolts, one link is fixed to the end of the shaft pin. A seal ring with an L-shaped cross section is fitted with a load ring that applies a pressing force on the back of the counterbore, and a ring groove is drilled in the end face of a bushing whose end is fixed to the other link. A crawler track seal characterized in that a seal ring sandwiched between rubber materials is inserted into the seal ring, and the seal surfaces of both seal rings are brought into face-to-face contact to seal the relatively rotating connecting part while sliding. .