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Patent Searching and Data


Title:
HYDRAULIC MOTOR WITH REDUCTION GEAR
Document Type and Number:
Japanese Patent JPH02283866
Kind Code:
A
Abstract:

PURPOSE: To effect accurate positioning through rotation of a cylinder body with the aid of a hydraulic motor by a method wherein a cylinder body is rotatably supported to the outer periphery of the housing of the hydraulic motor, and the rotary shafts of the cylinder body and the hydraulic motor are intercoupled through a ball reduction gear.

CONSTITUTION: A cylinder body 19 is rotatably supported to the outer periphery of a housing 10 of a hydraulic motor A through a bearing 20, and a cover body 21 is mounted to the end part of the cylinder body 19 by means of a bolt 22. By rotational drive of a rotary shaft 12 of the hydraulic motor A, a reduction gear shaft 24 is rotated and an eccentric disc 31 is eccentrically rotated around an intermediate eccentric part 27 to rotate a rotary disc 32 in a reduced state. This constitution rotates the cylinder body 19 through a cover body 21. In this case, since the eccentric disc 31 is coupled to a stationary disc 29 and the rotary disc 32 through large and small balls 37 and 38, no backlash is provided, and the cylinder body 19 can be rotated for accurate positioning.


Inventors:
AKIYAMA TERUO
HAYASHI MORITA
Application Number:
JP10024089A
Publication Date:
November 21, 1990
Filing Date:
April 21, 1989
Export Citation:
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Assignee:
KOMATSU MFG CO LTD
International Classes:
F03C1/00; F03C1/253; F03C1/26; F16H25/06; (IPC1-7): F03C1/00; F16H25/06