公开(公告)号：WO1981000547A1

公开(公告)日：1981-03-05

申请号：PCT/US1980001101

申请日：1980-08-25

Applicant: ELTRA CORP

Inventor： ELTRA CORP ,  KERN C ,  ZEPP L

IPC: B63H05/12

CPC classification number: F15B3/00 ,  B63H20/10

Abstract: A hydraulic system for trimming a marine outboard drive (49), and wherein a single actuator (11) for moving the propulsion unit (49) is used for both trim and tilt. The actuator (11) is connected to a hydraulic pump (3). An amplifier (5) for amplifying the pump pressure is connected to the actuator (11). The amplifier (5) has first and second ports (7, 9) connected to the actuator (11) and to the hydraulic pump (3). The amplifier (5) includes a switch (29) for bypassing the amplifier (5) to pass the hydraulic fluid from the pump (3) to the actuator (11) without amplification. The switch (29) is operable for by passing the amplifier (5) for rapidly tilting the propulsion unit (49) and operable for connecting the amplifier (5) within the hydraulic circuit to develop increased pressure for trimming the propulsion unit (49). The hydraulic amplifier (5) includes a piston (13) movable within a cylinder (21). Movement of the hydraulic amplifier piston (13) to one end of the hydraulic amplifier cylinder (21) actuates the switch (29) to bypass the amplifier (5) and movement in the other direction away from that end, switches the amplifier (5) to its amplification mode, the amplifier (5) continuing in its amplification mode until the amplifier piston (13) reaches a limit switch member (35) placed in its path to bypass the amplifier hydraulic circuit.

Abstract translation: 一种用于修整船用舷外驱动器（49）的液压系统，并且其中用于移动推进单元（49）的单个致动器（11）用于修整和倾斜。 致动器（11）连接到液压泵（3）。 用于放大泵压力的放大器（5）连接到致动器（11）。 放大器（5）具有连接到致动器（11）和液压泵（3）的第一和第二端口（7,9）。 放大器（5）包括用于旁路放大器（5）以将液压流体从泵（3）传递到致动器（11）而不进行放大的开关（29）。 开关（29）可操作用于使放大器（5）通过用于使推进单元（49）快速倾斜并且可操作以连接液压回路内的放大器（5），以产生用于修整推进单元（49）的增加的压力。 液压放大器（5）包括可在气缸（21）内移动的活塞（13）。 液压放大器活塞（13）到液压放大器气缸（21）的一端的运动致动开关（29）以旁路放大器（5）并沿着远离该端的另一个方向移动，将放大器（5） 在其放大模式下，放大器（5）继续处于其放大模式，直到放大器活塞（13）到达放置在其旁路放大器液压回路的路径中的限位开关构件（35）。