SWASH PLATE-TYPE HYDRAULIC ROTARY MACHINE

PROBLEM TO BE SOLVED: To provide a swash plate-type hydraulic rotary machine in which uneven wear of a sliding surface of a shoe can be suppressed and which therefore can have high reliability.SOLUTION: Each shoe 41 of a swash plate-type hydraulic rotary machine 101 according to the present inventio...

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Bibliographic Details
Main Authors SUZUKI MOTOJI, SUZUKI KENTA, SAKURAI SHIGEYUKI, FUJIMOTO TAKASHI
Format Patent
LanguageEnglish
Japanese
Published 04.10.2018
Subjects
BLASTING
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
WEAPONS
WIND, SPRING WEIGHT AND MISCELLANEOUS MOTORS
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Summary:PROBLEM TO BE SOLVED: To provide a swash plate-type hydraulic rotary machine in which uneven wear of a sliding surface of a shoe can be suppressed and which therefore can have high reliability.SOLUTION: Each shoe 41 of a swash plate-type hydraulic rotary machine 101 according to the present invention includes: an annular seal land portion 52 for sealing, between the seal land portion 52 and a swash plate 34, oil liquid for lubrication supplied from a supply hole 41D; an annular outer land portion 53 which is disposed at a radial outer side of the seal land portion 52 while separating from the seal land portion 52, and which generates hydraulic reaction force by the oil liquid for lubrication between a sliding surface of the swash plate 34 and each shoe 41 to thereby release a contact pressure of the seal land portion 52; an annular groove 54 which is composed of a recessed portion formed at an inner peripheral side of the outer land portion 53 and into which the oil liquid for lubrication flows; and a first communication hole 55 drilled inside the shoe 41 and communicating the annular groove 54 with a housing space of a cylinder block 23 in a casing 21.SELECTED DRAWING: Figure 4 【課題】シューの摺動面の偏摩耗を抑制でき、高い信頼性を得ることができる斜板式液圧回転機械の提供。【解決手段】本発明に係る斜板式液圧回転機械１０１の各シュー４１は、供給孔４１Ｄから供給された潤滑用の油液を斜板３４との間でシールする円環状のシールランド部５２と、シールランド部５２の径方向外側に当該シールランド部５２と離隔して設けられ、斜板３４の摺動面と各シュー４１との間に潤滑用の油液による油圧反力を発生させてシールランド部５２の面圧を緩和する円環状の外側ランド部５３と、外側ランド部５３の内周側に形成された凹部から成り、潤滑用の油液が流入する環状溝５４と、シュー４１の内部に穿設され、環状溝５４とケーシング２１内のシリンダブロック２３の収容空間とを連通する第１の連通孔５５とを含む。【選択図】図４
Bibliography:Application Number: JP20170051768