摘要:
A hand-operated piston pump includes a drive shaft and a rotor mounted in a housing case, the rotor having axial compression chambers, a piston biased by an elastic member sliding in each compression chamber and having a projecting end that engages a cam track; a fluid reservoir in the housing case; a valve plate downstream of the rotor having conduits for a pressurized fluid that communicate with conduits in walls of the compression chambers, the valve plate being non-rotatably mounted below the housing case and communicating with conduits that carry the pressurized fluid to and from a consuming unit through an interposed check valve inserted in a corresponding valve body, the valve body having an upper flange with fluid supply and return channels communicating with the fluid conduits of the valve plate. The valve plate floats relative to the upper flange and is separated therefrom by a separating member.
摘要:
A servo-assisted steering device for vehicles includes a manual control member that is connected to a pump or the like manually driving it when the control member is rotated. The pump is connected at its delivery and suction side to one of the two chambers of one or more steering actuators through hydraulic pipes, feeding a pressurized fluid alternately to one or the other of the two chambers depending on moving direction, in particular the rotation of the control member. Assist control means for the steering actuators include a hydraulic fluid tank and automatic pumping means, which are driven and connected to the hydraulic pipes when the steering wheel is operated and which, by increasing the amount of pumped fluid, increase the pressure exerted by the pump to reduce resistance when steering the control member. The number of revolutions of the motor driving the automatic pumping means may be adjusted.
摘要:
A steering device for an outboard engine includes: a helm mechanism operable, in response to operation of a steering wheel, to steer the outboard engine and including a drive shaft parallel to an output shaft of the operation member; an electric assist mechanism for detecting steering torque, applied to the steering wheel, to assist operation of the helm mechanism on the basis of the detected steering torque; and a power transmission section for connecting the output shaft of the steering wheel and the helm mechanism to transmit rotation of the output shaft to the helm mechanism.
摘要:
A steering system for a marine propulsion device eliminates the need for two support pins and provides a hydraulic cylinder with a protuberance and an opening which cooperate with each other to allow a hydraulic cylinder's system to be supported by a single pin for rotation about a pivot axis. The single pin allows the hydraulic cylinder to be supported by an inner transom plate in a manner that allows it to rotate in conformance with movement of a steering arm of a marine propulsion device.
摘要:
One or more helm stations are provided to remotely control the engine, transmission and steering functions of a boat or ship. Multiple station remote helms, either portable or stationary, include electric switches that, when closed, energize solenoids and relays to control single or multiple engine throttles, transmissions, ignition, starting, stopping and steering functions of a boat or ship. These switch groups are placed in any location on the vessel or may be mounted on a hand held portable unit which is plugged into various locations where matching receptacles are placed. The throttle, transmission shifting and steering movement is provided by hydraulic cylinders, with fluid pressure supplied by electrically powered hydraulic pumps. The fluid supply to these cylinders is controlled by electric solenoid operated valves, which in turn are activated by the electric helm switches. The ignition and starting functions of the engines are energized by relays, which in turn are closed or opened by any of the multiple helm switches.
摘要:
A power steering system is actuated by a controller which includes a Bowden cable having a core and a sheath. The core is connected directly mechanically to a control mechanism and the sheath is connected hydraulically to the control mechanism by a control valve and an operating cylinder. To balance a reaction of the control mechanism on the core and thus undesired steering movements of the power steering system, a brake unit is disposed between the core and the sheath of the Bowden cable to prevent relative movement between the two by means of friction.
摘要:
A power steering system for a boat which is capable of accurately detecting steering torque of a steering wheel, to thereby generate appropriate assistance force corresponding to the steering torque. Rotation of the steering wheel causes pressure to be produced in one of cylinder chambers of a cylinder mechanism, so that steering torque of the steering wheel may be detected depending upon a difference in pressure between cylinder chambers, to thereby permit a drive motor to generate assistance force corresponding to the detected steering torque.
摘要:
A combined manual and automatic steering for a watercraft wherein there is provided an automatic steering control and a manual steering control that is operative to override the automatic control upon manual operator actuation.
摘要:
Disclosed herein is a hydraulic control unit for a marine installation comprising a helm station including a pump comprising first and second pump discharge ports, which pump is selectively and alternatively operable to deliver fluid under pressure from the first and second pump discharge ports, a plurality of steerable marine propulsion units, a plurality of corresponding hydraulic steering cylinders respectively connected to each of the propulsion units and including respective first ports which, when subject to fluid under pressure, tend to steer the propulsion units in one direction and including respective second ports which, when subject to fluid under pressure, tend to steer the propulsion units in the opposite direction, and a hydraulic tie line connecting the second port of each steering cylinder except the last steering cylinder with the first port of the following steering cylinder, which hydraulic control unit includes a hydraulic circuit adapted for communication between the first pump discharge port and the first steering cylinder first port and between the second pump discharge port and the last steering cylinder second port and with a tie line and operable, during the presence of fluid under pressure at one of the first and second discharge ports, and in response to the absence of fluid under pressure in the tie line, for preventing steering movement of the other of the first and last propulsion units, and operable, when the steerable propulsion units are in nonangularly aligned steering positions, for locating the steerable propulsion units in angularly aligned positions.
摘要:
Auxiliary control of fluid actuated steering apparatus for ships, boats and the like (hereinafter, "water vessels") includes isolating the existing steering control system from the steering apparatus and providing flow-communication between fluid under pressure and the steering apparatus through an auxiliary directional control sub-system enabling control of the steering apparatus independently of the main steering control system. According to a preferred embodiment, the source of the fluid includes a quantity of fluid stored under pressure and another quantity of fluid adapted to be provided under pressure. Isolation of the existing steering control system is carried out by coupling the source of fluid to a by-pass control sub-system preferably adapted both to isolate the main steering control system and to couple the auxiliary directional control sub-system to the steering apparatus. Initiation of the auxiliary steering control may be carried out by electrical, hydraulic or pneumatic actuation or, preferably, by a combination thereof.