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Title:
HYDRAULIC DRIVE USING HYDRAULIC MOTOR, AND HYDRAULIC MOTOR
Document Type and Number:
Japanese Patent JP2001221316
Kind Code:
A
Abstract:

To provide a hydraulic drive whose field area is reduced and structure is simplified by positioning the hydraulic motor closely to a directional control valve and integrating the directional control valve and an unloading valve.

A suction valve 13 is arranged upstream from a directional control valve 12 for guiding pressure oil only to a pump discharge pipeline 7. Because the suction valve 13 can be arranged upstream from the directional control valve 12, the auxiliary machinery (a relief valve 4) other than the suction valve 13 can be simultaneously arranged upstream of the directional control valve 12. Each auxiliary machinery which is conventionally arranged downstream from the directional control valve 12 can be arranged upstream from the directional control valve 12, so that a hydraulic motor 1 and the directional control valve 12 can be arranged closely.


Inventors:
MARUTA KAZUHIRO
YOSHIDA NOBUSANE
Application Number:
JP2000033806A
Publication Date:
August 17, 2001
Filing Date:
February 10, 2000
Export Citation:
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Assignee:
KOMATSU MFG CO LTD
International Classes:
F16H39/06; (IPC1-7): F16H39/06
Domestic Patent References:
JPH11247965A1999-09-14
JPS6088270A1985-05-18
JPH09150641A1997-06-10
JPH0542807U1993-06-11
JPH09302728A1997-11-25
JPH10299706A1998-11-10
JPH09177964A1997-07-11
JPS60173701U1985-11-18
JPH09317879A1997-12-12
JPS5874946A1983-05-06
Attorney, Agent or Firm:
Takahisa Kimura (1 outside)



 
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