JPH041724U

JPH041724U -

Info

Publication number: JPH041724U
Application number: JP1990042264U
Authority: JP
Priority date: 1990-04-19
Filing date: 1990-04-19
Publication date: 1992-01-08

Description

[Brief explanation of the drawing]

第１図は請求項第１項のシール装置をそなえた
旋回軸受の要部たて断面図、第２図は第１図のＢ
部詳細図、第３図はこの考案にかかる請求項第２
項のシール装置を示す要部たて断面図、第４図は
従来技術のシールをそなえた旋回装置のたて断面
図、第５図は第４図のＡ部詳細図である。１，１′……旋回軸受、２，２′，２５……内
輪、４，４′，２６……外輪、１３，１３′，３
４……グリース溜り部、１４，１７……上側シー
ル、１５，１８……下側シール、１６，２４……
シール装置、１９，２３……シール嵌着用凹溝、
２０，２１……グリース保持リツプ、２２……リ
ツプ摺動用凹溝、２７……軸受シール嵌着用凹溝
、２８……ダストシール嵌着用凹溝、２９……軸
受シール、３０……角形リング、３２……ダスト
シール。 FIG. 1 is a vertical cross-sectional view of a main part of a swing bearing equipped with a sealing device according to claim 1, and FIG.
Detailed view of the part, FIG. 3 shows claim 2 of this invention.
FIG. 4 is a vertical sectional view of the main part of the sealing device in the above section, FIG. 4 is a vertical sectional view of a rotating device equipped with a conventional seal, and FIG. 5 is a detailed view of section A in FIG. 4. 1, 1'... Swivel bearing, 2, 2', 25... Inner ring, 4, 4', 26... Outer ring, 13, 13', 3
4... Grease reservoir portion, 14, 17... Upper seal, 15, 18... Lower seal, 16, 24...
Seal device, 19, 23... Concave groove for seal fitting,
20, 21... Grease retaining lip, 22... Lip sliding groove, 27... Bearing seal fitting groove, 28... Dust seal fitting groove, 29... Bearing seal, 30... Square ring, 32 ...Dust seal.

Claims

[Claims for Utility Model Registration] (1) A seal fitting groove is formed around the entire circumference of the outer circumferential surface of the inner ring and the inner circumferential surface of the outer ring, and the seal is fitted into the groove and the seal is inserted into the groove. In a seal device whose tip is brought into contact with the mating outer ring or inner ring to prevent leakage of the grease filled in the swing bearing, the outer ring or inner ring that faces the seal fitting groove of the inner ring or outer ring. A concave groove for sliding the grip is formed along the entire circumference of the grip at the corresponding position, and a grease retaining lip and a dust lip are formed on the seal that are divided into two in the vertical direction, allowing the seal to be fitted into the seal. When fitting into the concave groove, position the grease retaining lip on the side facing the grease reservoir, and also place the lip tip of the grease retaining lip on one side of the sliding surface of the concave groove for the lip sliding surface, and the lip tip of the dust lip. A sealing device for a swing bearing, characterized in that the lip sliding surface concave grooves are in contact with each other along the other sliding surface of the lip sliding surface groove. (2) A seal fitting groove is formed around the entire circumference of the outer circumferential surface of the inner ring and the inner circumferential surface of the outer ring, and the seal is fitted into the groove, and the tip of the seal is inserted into the mating outer ring, In a seal device that is brought into contact with an inner ring to prevent leakage of grease filled in a swing bearing, a bearing seal having a rectangular ring is fitted into the seal fitting groove,
The sliding surface of the bearing seal is brought into contact with the entire circumferential sliding surface of the opposing outer ring or inner ring, and a dust strip is provided at an outer position that is not on the grease reservoir side with respect to the bearing seal fitting position. A sealing device for a swing bearing, characterized in that a dust seal is provided on an inner ring and an outer ring.