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    • 5. 发明公开
    • SKEW PLATE-TYPE HYDRAULIC ROTARY MACHINE
    • HYDRAULISCHESCHRÄGPLATTEN-ROTATIONSMASCHINE
    • EP2650538A1
    • 2013-10-16
    • EP10860466.1
    • 2010-12-07
    • Kawasaki Jukogyo Kabushiki Kaisha
    • OHNO, TakeshiSUZUKI, TakahisaWADA, HisaoOHNO, Mariko
    • F04B1/22F03C1/22
    • F01B3/108F03C1/0639F04B1/126F04B1/2078F04B1/2085F04B1/22F04B27/0882F04B27/0886
    • A swash plate type hydraulic rotating machine (10) includes: a rotating shaft (3); a valve plate (4); a swash plate (15); a cylinder block (9) fitted to the outside of the rotating shaft (3), such that the cylinder block (9) is slidingly in contact with the valve plate (4); cylinders (11) provided in the cylinder block (9); pistons (13) inserted in the respective cylinders (11), such that the pistons (13) are movable in an axial direction (L) in a reciprocating manner; shoes (14) each fitted to the distal end of a respective one of the pistons (13); an annular keep plate (17) provided between the swash plate (15) and the cylinder block (9), the keep plate (17) supporting the shoes (14); a plain bearing (80) inserted within the inner periphery of the keep plate (17), the plain bearing (80) supporting the keep plate (17) in a manner to push the keep plate (17) toward the swash plate (15) side; and set springs (20) biasing the plain bearing (80) and the cylinder block (9) toward the opposite sides in the axial direction L. The swash plate type hydraulic rotating machine (10) is configured such that, when in an assembled state, a gap in the axial direction (L) between the cylinder block (9) and the plain bearing (80) is 0 or a fine gap.
    • 旋转斜盘式液压旋转机(10)包括:旋转轴(3); 阀板(4); 斜盘(15); 安装在所述旋转轴(3)的外侧的气缸体(9),使得所述气缸体(9)与所述阀板(4)滑动接触; 设置在气缸体(9)中的气缸(11) 活塞(13)插入到各个气缸(11)中,使得活塞(13)能够以往复方式沿轴向方向(L)移动; 每个活塞(13)的前端各自配置的鞋(14); 设置在旋转斜盘(15)和气缸体(9)之间的环形保持板(17),保持板(17)支撑鞋(14); 插入保持板(17)的内周内的滑动轴承(80),以保持板(17)朝向斜盘(15)的方式支撑保持板(17)的滑动轴承(80) 侧; 以及将滑动轴承(80)和气缸体(9)朝向轴向方向L的相对侧设定的弹簧(20)。斜盘式液压旋转机械(10)构成为,在组装状态 气缸体(9)和滑动轴承(80)之间的轴向(L)的间隙为0或微细间隙。
    • 8. 发明公开
    • FILL PLUG FOR HYDRAULIC DEVICE
    • 嘴液压装置
    • EP2581630A1
    • 2013-04-17
    • EP11792116.3
    • 2011-06-01
    • Kawasaki Jukogyo Kabushiki Kaisha
    • SAKAI, RyujiWADA, HisaoIMAI, Tatsuya
    • F16J13/12F16B35/00
    • F16J13/12F16B33/004F16B35/00F16J15/04F16L55/1108
    • High-performance sealing of a through hole in which pressure is high can be realized by tightening a filler plug with respect to an internal thread portion formed in an oil passage of a hydraulic device at a high tightening torque. In addition, the hydraulic device can be reduced in size and cost by realizing a small height of a head portion of the filler plug.
      The filler plug is configured such that: a head portion (16) is formed on an upper end portion of an external thread portion (15); a sealing portion (18) formed at the head portion (16) can be caused to strongly contact a funnel-shaped inclined inner peripheral surface (19) formed at one end of an internal thread portion (14) formed in an oil passage (13) of the hydraulic device (12) by tightening the external thread portion (15) with respect to the internal thread portion (14); an upper peripheral surface portion of the sealing portion (18) is formed as a tapered portion (22); a circular constricted portion (21) is formed between the sealing portion (18) and the upper end portion of the external thread portion (15); and a dimensionless value of a head portion height H1 from an upper end surface of the head portion (16) to the sealing portion (18), that is, a dimensionless value obtained by dividing the head portion height H1 by a nominal designation value of the external thread portion (15) ranges from 0.4 to 0.7.