Title:
HYDRAULIC MOTOR EQUIPPED WITH REDUCTION GEAR
Document Type and Number:
WIPO Patent Application WO/1990/012970
Kind Code:
A1
Abstract:
A hydraulic motor equipped with a reduction gear wherein the lubricating oil in the gear case is cooled to improving the lives of the sealant and the bearing. Said motor is provided with a pair of supply/discharge ports (18, 17) for circulating the lubricating oil that extend from two opposite spots in the radial direction on the edge surface of one side of the circumferential wall of a motor case (1) in the circumferential wall in parallel with the axial direction of the motor case (1), and open their tips inside a reduction gear case (6). Thus, at the same time when the cooled lubricating oil is supplied to the inside of the gear case from the outside, the lubricating oil at a high temperature is discharged outside, thus maintaining the lubricating oil in the gear case at a low temperature.
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Inventors:
INAGAWA MAKOTO (JP)
Application Number:
PCT/JP1990/000530
Publication Date:
November 01, 1990
Filing Date:
April 24, 1990
Export Citation:
Assignee:
KOMATSU MFG CO LTD (JP)
International Classes:
B60K17/04; F03C1/00; E02F9/22; F03C1/06; F03C1/253; F03C1/26; F16H1/28; (IPC1-7): F03C1/00; F16H57/04
Foreign References:
| JPS607131B2 | 1985-02-22 | |||
| JPS57131658U | 1982-08-17 | |||
| JPS62141362A | 1987-06-24 | |||
| JPS53123346U | 1978-09-30 |
Other References:
See also references of EP 0420995A4
Attorney, Agent or Firm:
Yonehara, Masaaki (5-16 Toranomon 1-chom, Minato-ku Tokyo 105, JP)
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