JPH0165923U

JPH0165923U -

Info

Publication number: JPH0165923U
Application number: JP1987161072U
Authority: JP
Priority date: 1987-10-20
Filing date: 1987-10-20
Publication date: 1989-04-27

Description

[Brief explanation of the drawing]

第１図はこの考案にかかる旋回軸受を装備した
旋回装置の要部断面図、第２図は第１図のＡ部詳
細図、第３図は油圧シヨベルの側面図、第４図は
従来技術旋回軸受を装備した旋回装置の要部断面
図である。３，１５……旋回装置、５，１４……旋回軸受
、６，１６……内輪、８，１７……外輪、１８…
…つば部、１９……凹溝、２０……上面側リング
、２１……下面側リング、２２……リング状大径
カラー。 Fig. 1 is a sectional view of the main parts of a swing device equipped with a swing bearing according to this invention, Fig. 2 is a detailed view of part A in Fig. 1, Fig. 3 is a side view of a hydraulic excavator, and Fig. 4 is a conventional technology. FIG. 2 is a sectional view of a main part of a swing device equipped with a swing bearing. 3,15...Swivel device, 5,14...Swivel bearing, 6,16...Inner ring, 8,17...Outer ring, 18...
...Brim portion, 19...Concave groove, 20...Top side ring, 21...Bottom side ring, 22...Ring-shaped large diameter collar.

Claims

[Scope of utility model registration request]

An inner ring equipped with an internal gear is fixed to the lower traveling body, an outer ring is fixed to the upper rotating body, and a pinion of a speed reducer for the swing motor installed on the upper rotating body and the internal gear on the lower traveling body are connected. In a rotating device having a structure in which the upper rotating body is rotated by the rotational force of the pinion, a collar is provided on the outer periphery of the inner ring so as to protrude over the entire circumference, and the outer ring is divided into upper and lower parts so that the collar can be held. It is a split type, and a U-shaped groove is provided on the inner periphery of the outer ring to support the collar, and an upper ring and a lower ring are arranged on the upper and lower sides of the collar, respectively. A ring-shaped large diameter collar is fitted into the concave groove fixed surface portion of the circumferential portion, and the inner ring and the outer ring are configured to be able to pivot and slide via the upper surface side ring, the lower surface side ring, and the ring-shaped large diameter collar. A swing bearing for construction machinery featuring: