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    • 1. 发明申请
    • Bearing Device
    • 轴承装置
    • US20090268996A1
    • 2009-10-29
    • US12227346
    • 2007-05-10
    • Hiroshi YamamotoMotohide SugiharaAtsushi Nagato
    • Hiroshi YamamotoMotohide SugiharaAtsushi Nagato
    • F16C33/10
    • F16C17/02F16C33/1065F16C2240/30F16C2240/90F16C2350/26
    • In a bush (10) which relatively-rotatably supports a journal shaft (1) around its central axis by housing the journal shaft (1) in a formed bearing hole (11), the bush 10 includes an oil supply groove (16) formed spirally to supply lube oil to an inner surface of the bearing hole (11) which contacts to the journal shaft (1) when the journal shaft relatively rotates. A ratio of an area of the oil supply groove (16) to the inner surface area of the bearing hole (11) is equal to or less than 30%. A product of a distance in the central axis direction and a distance in the circumferential direction of the journal shaft (1) between the oil supply groove (16) in next to each other on the inner surface of the bearing hole (11) is within 50 to 300 mm2 range.
    • 在通过将轴颈轴(1)容纳在形成的轴承孔(11)中而相对地可旋转地支撑轴颈轴(1)的衬套(10)中,衬套10包括形成的供油槽(16) 螺旋地将润滑油供给到当轴颈轴相对旋转时与轴颈轴(1)接触的轴承孔(11)的内表面。 供油槽(16)的面积与轴承孔(11)的内表面积的比例等于或小于30%。 在轴承孔(11)的内表面上彼此相邻的供油槽(16)之间的轴心方向上的距离和轴颈轴(1)的周向距离的乘积在内 50至300 mm2范围。
    • 2. 发明授权
    • Bearing device
    • 轴承装置
    • US08104966B2
    • 2012-01-31
    • US12227346
    • 2007-05-10
    • Hiroshi YamamotoMotohide SugiharaAtsushi Nagato
    • Hiroshi YamamotoMotohide SugiharaAtsushi Nagato
    • F16C33/10
    • F16C17/02F16C33/1065F16C2240/30F16C2240/90F16C2350/26
    • In a bush (10) which relatively-rotatably supports a journal shaft (1) around its central axis by housing the journal shaft (1) in a formed bearing hole (11), the bush 10 includes an oil supply groove (16) formed spirally to supply lube oil to an inner surface of the bearing hole (11) which contacts to the journal shaft (1) when the journal shaft relatively rotates. A ratio of an area of the oil supply groove (16) to the inner surface area of the bearing hole (11) is equal to or less than 30%. A product of a distance in the central axis direction and a distance in the circumferential direction of the journal shaft (1) between the oil supply groove (16) in next to each other on the inner surface of the bearing hole (11) is within 50 to 300 mm2 range.
    • 在通过将轴颈轴(1)容纳在形成的轴承孔(11)中而相对地可旋转地支撑轴颈轴(1)的衬套(10)中,衬套10包括形成的供油槽(16) 螺旋地将润滑油供给到当轴颈轴相对旋转时与轴颈轴(1)接触的轴承孔(11)的内表面。 供油槽(16)的面积与轴承孔(11)的内表面积的比例等于或小于30%。 在轴承孔(11)的内表面上彼此相邻的供油槽(16)之间的轴心方向上的距离和轴颈轴(1)的周向距离的乘积在内 50至300 mm2范围。
    • 3. 发明授权
    • Control unit for hydraulic impact wrench
    • 液压冲击扳手控制单元
    • US06334494B1
    • 2002-01-01
    • US09594373
    • 2000-06-15
    • Atsushi Nagato
    • Atsushi Nagato
    • B25D1500
    • B25B21/02B25B23/1453
    • A pressure leading path in a impact type tool is branched halfway through a bypass passage for connecting a high pressure chamber H with a low pressure chamber (L). The branch includes a first fixed aperture leading to the high pressure chamber (H). The branch also includes a second fixed aperture leading to the low pressure chamber (H). The pressure leading path is connected to a primary side of a relief valve. An automatic shutoff mechanism is operated by hydraulic operating fluid relieved from the secondary side of relief valve. The automatic shutoff mechanism cuts off the air supply to the air motor driving the tool, and thus automatically shuts off the tool, when the pressure in the pressure leading path exceeds a predetermined value. The present invention permits control of pulsed torque with high precision in a simple construction.
    • 冲击式工具中的压力引导路径通过用于将高压室H与低压室(L)连接的旁通通道中途分支。 分支包括通向高压室(H)的第一固定孔。 分支还包括通向低压室(H)的第二固定孔。 压力引导路径连接到安全阀的初级侧。 自动关闭机构由从安全阀次级侧释放的液压工作液体操作。 当压力引导路径中的压力超过预定值时,自动关闭机构切断驱动工具的气动马达的空气供应,从而自动关闭工具。 本发明允许以简单的结构高精度地控制脉冲扭矩。