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Patent Searching and Data


Title:
HYDRAULIC MOTOR EQUIPPED WITH BRAKE DEVICE
Document Type and Number:
WIPO Patent Application WO/1996/011336
Kind Code:
A1
Abstract:
A hydraulic motor including a motor housing (22) formed by coupling a motor case (20) and an end cover (21), a cylinder block (23) rotatably fitted into the motor housing (22) through a shaft (24), a plurality of cylinder holes (25) formed in parallel with the shaft (24) in the cylinder block (23) and in a spaced-apart relation in a circumferential direction, a piston (26) slidably fitted into each cylinder hole (25), and a swash plate (28) for guiding the piston in the circumferential direction when the piston (26) is caused to slide, which motor is further equipped with a brake device which comprises a ring-like brake member (31) on a stationary side so disposed on the inner peripheral surface of the motor case (20) as to be movable in the axial direction, a ring-like brake member (36) on a rotation side so disposed on the outer peripheral surface of the cylinder block (23) as to be movable in the axial direction, a spring member (38) for bringing both ring-like brake members (31, 36) into pressure contact with the inner surface (21a) of the end cover (21), a brake piston (42) movably fitted into the cylinder hole (25) of the end cover (21) in the axial direction to thereby define an oil chamber (42), and moved by a pressure oil supplied to the oil chamber (42) to thereby compress the spring member (38) and to release the pressure contact of both ring-like brake members (31, 36), and an oil path so defined in the end cover (21) as to communicate with the oil chamber.

Inventors:
Hayashi
Seita, Arai
Mitsuru, Nunotani
Sadao
Application Number:
PCT/JP1995/002068
Publication Date:
April 18, 1996
Filing Date:
October 09, 1995
Export Citation:
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Assignee:
KOMATSU LTD
Hayashi, Seita Arai Mitsuru Nunotani Sadao
International Classes:
F03C1/22; F03C1/26; F04B49/02; F16D55/40; F16D59/02; F16D65/18; F16D55/00; (IPC1-7): F03C1/22
Foreign References:
JPS6348974U
JPS60194182U
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