JPS62176185U

JPS62176185U -

Info

Publication number: JPS62176185U
Application number: JP6538786U
Authority: JP
Priority date: 1986-04-30
Filing date: 1986-04-30
Publication date: 1987-11-09

Description

[Brief explanation of the drawing]

第１図乃至第４図は本考案をリーダの旋回装置
に適用した一実施例を示すもので、第１図は断面
正面図、第２図は正面図、第３図は断面平面図、
第４図は第１図の―断面図、第５図は上部旋
回体の旋回装置に適用した別の実施例を示す断面
正面図、第６図は従来のラツク＆ピニオン方式の
旋回装置の平面図、第７図はその断面図である。１０……下部リーダ、１１……旋回装置、１３
，４１……アクチユエータケース、１４……上部
リーダ、１５，４３……ターンテーブルベアリン
グ、１６，４４……ピニオン、１７，１８，４５
，４６……ラツク、１９，２０，２１，２２……
ピストン、２４，２５，２６，２７……シリンダ
、２８，２９……配管、４０……下部走行体。 1 to 4 show an embodiment in which the present invention is applied to a rotation device of a leader, in which FIG. 1 is a sectional front view, FIG. 2 is a front view, FIG. 3 is a sectional plan view,
FIG. 4 is a cross-sectional view of FIG. 1, FIG. 5 is a cross-sectional front view showing another embodiment applied to a revolving device for an upper revolving structure, and FIG. 6 is a plan view of a conventional rack-and-pinion revolving device. 7 are sectional views thereof. 10...Lower leader, 11...Swivel device, 13
, 41... Actuator case, 14... Upper leader, 15, 43... Turntable bearing, 16, 44... Pinion, 17, 18, 45
, 46...Lack, 19, 20, 21, 22...
Piston, 24, 25, 26, 27... Cylinder, 28, 29... Piping, 40... Lower running body.

Claims

[Scope of utility model registration request]

A pinion is couple-fitted to the center of rotation of a rotating body rotatably supported via a turntable bearing, and a pair of racks meshing with the pinion are arranged symmetrically on both sides of the pinion,
A turning device for construction machinery, comprising a cylinder for moving the pair of racks.