JPH0262951U

JPH0262951U -

Info

Publication number: JPH0262951U
Application number: JP14138288U
Authority: JP
Priority date: 1988-10-28
Filing date: 1988-10-28
Publication date: 1990-05-10

Description

[Brief explanation of drawings]

第１図はこの考案にシール構造をそなえた旋回
装置の要部断面図、第２図は第１図のＢ部詳細図
、第３図はアタツチメント先端部に破砕機を装着
した油圧シヨベルの側面図、第４図は従来技術旋
回装置の要部断面図、第５図は第４図のＡ部詳細
図である。４……アタツチメント、５……ブラケツト体、
６，２４……旋回装置、７……破砕機（作業工具
）、８……基板、９……主板、１０……旋回軸受
、１９，２６……円板体、２３，２５……グリー
スバス、２７……円筒体、２８……Ｏリング。 Figure 1 is a sectional view of the main parts of a swing device equipped with a seal structure based on this invention, Figure 2 is a detailed view of part B in Figure 1, and Figure 3 is a side view of a hydraulic excavator with a crusher attached to the tip of the attachment. 4 is a sectional view of a main part of a conventional turning device, and FIG. 5 is a detailed view of section A in FIG. 4. 4...Attachment, 5...Bracket body,
6, 24...Swivel device, 7...Crusher (work tool), 8...Substrate, 9...Main plate, 10...Swivel bearing, 19,26...Disc body, 23, 25...Grease bath , 27...Cylindrical body, 28...O ring.

Claims

[Scope of utility model registration request]

An attachment is rotatably attached to the front part of the upper revolving body, a bracket body is pivotally attached to the tip of the attachment, and a work tool can be attached to the bracket body via a swing device, and the main plate of the work tool An inner ring with an internal gear of the slewing bearing in the swivel device is fixed, and an outer ring of the slewing bearing is fixed to the base plate of the bracket body, and a cylindrical body is attached to the central part of the main plate of the power tool surrounded by the inner ring. is fixed upright, the inner ring, the cylindrical body and the main plate of the working tool form a grease bath, the pinion for the swing motor is meshed with the internal gear of the inner ring inside the grease bath, and the upper edge of the cylindrical body is Department and
In the sealing structure in which a sealing member is provided between the lower surface of the bracket body substrate, the upper end of the cylindrical body fixed upright on the main plate of the power tool is provided with a step for fitting an O-ring over the entire circumference of the inner circumference. Established a department,
On the other hand, a disc body is fixedly provided at the center portion of the lower surface of the bracket body board, and a step for inserting an O-ring that can be inserted into the inner peripheral part of the O-ring over the entire circumference of the outer peripheral part of the lower end of the disc body is provided. When the power tool is attached to the bracket body via a rotating device, the O-ring fitting stepped part of the cylindrical body and the O-ring fitting part of the disc body are formed.
A seal structure for a grease bath, characterized in that an O-ring can be installed between the stepped part for inserting a ring.