Hydraulic drive device

In order to suppress the occurrence of a peak pressure inside a motor case (M) without compromising the cooling effect of a hydraulic motor (12), a hydraulic drive device includes, the hydraulic motor (12) which is operated by an oil being circulated through a main oil path (13A) and a main oil path...

Full description

Saved in:
Bibliographic Details
Main Authors NAITOU SHINOBU, MIYATA TAKUYA
Format Patent
LanguageChinese
English
Published 02.03.2016
Subjects
BLASTING
ENGINEERING ELEMENTS AND UNITS
GEARING
GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVEFUNCTIONING OF MACHINES OR INSTALLATIONS
HEATING
LIGHTING
MACHINES OR ENGINES FOR LIQUIDS
MECHANICAL ENGINEERING
OR A REACTIVE PROPULSIVE THRUST, NOT OTHERWISE PROVIDED FOR
POSITIVE DISPLACEMENT MACHINES FOR LIQUIDS
POSITIVE-DISPLACEMENT ENGINES DRIVEN BY LIQUIDS
PRODUCING MECHANICAL POWER
PUMPS
PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
THERMAL INSULATION IN GENERAL
WEAPONS
WIND, SPRING WEIGHT AND MISCELLANEOUS MOTORS
Online AccessGet full text

Cover

More Information
Summary:In order to suppress the occurrence of a peak pressure inside a motor case (M) without compromising the cooling effect of a hydraulic motor (12), a hydraulic drive device includes, the hydraulic motor (12) which is operated by an oil being circulated through a main oil path (13A) and a main oil path (13B) which are connected to the motor case (M), a low-pressure selection valve (31) which is operated depending on a differential pressure between the main oil path (13A) and the main oil path (13B) so as to discharge the oil in the main oil path (13B) into the motor case (M), and a tank oil path (33) connecting the inside of the motor case (M) to an oil tank (T), wherein a choke aperture (100) by annular gap flow is interposed in the low-pressure selection valve (31).
Bibliography:Application Number: CN201480000886