16results about "Propulsive transmission" patented technology

A computer implemented diagnostics system for a marine propeller drive unit is provided. The diagnostics system comprising processing circuitry connected to a speed sensor system and to a control unit associated with the electric machine. The speed sensor system is arranged in connection to the differential arrangement to provide propeller speed data to the processing circuitry indicative of a speed of rotation of at least one of the propeller axles of the self-balancing propeller drive unit. The control unit is arranged to provide motor current data to the processing circuitry indicative of a motor current drawn by the electric machine. The processing circuitry is arranged to monitor the motor current data from the control unit, and the propeller speed data from the speed sensor system, and to classify a state of the self-balancing propeller drive unit into a pre-determined number of states comprising one or more fault states, based on the motor current data and on the propeller speed data. The processing circuitry is arranged to trigger an action by the diagnostics system in case the state of the self-balancing propeller drive unit is classified as a fault state.

A marine propulsion device includes an electric motor; a motor controller; a case to house the motor controller; a steering mechanism to integrally rotate a propeller, the electric motor, and the case in a right-left direction; and two power lines including first ends connected to the motor controller, and positive and negative lines to supply driving electric power to the motor controller. The two power lines are twisted together so as to absorb twisting of the two power lines during rotation by the steering mechanism.

The present application relates to the water surface unmanned ship hybrid power series propulsion system and switching control method, the propulsion system includes propulsion device and propulsion monitoring system, the propulsion device adopts series arrangement to realize transmission connection, including diesel engine, gear box, motor, thrust bearing, shafting and propeller which are arranged in the order from bow to stern; the propulsion monitoring system includes central monitoring station, control box, power management system. The propulsion system makes the unmanned ship meet the high and low speed requirements, realizes the diesel engine as the power source propulsion in high speed working condition, and realizes the motor as the power source propulsion in low speed working condition, which meets the requirement of long time low speed sailing; the propulsion monitoring system automatically controls the diesel engine, propulsion motor and gear box, realizes the switching of propulsion mode, simplifies the complexity of remote control console control, avoids the adverse effect of communication delay on propulsion mode switching, and improves the efficiency of unmanned ship propulsion mode state switching.

The application discloses a method for preventing stern tube from water entry during ship launching, which comprises the following steps: installing a first pipeline at the lower oil inlet of the stern tube and a second pipeline at the upper oil outlet, when the ship is launched, a certain pressure gas is introduced into the stern tube through the first pipeline, so that the III sealing ring is tightly pressed on the stern shaft, even if the seawater enters the second chamber during the launching of the ship, the seawater will not enter the stern tube through the III sealing ring, and the third pipeline is connected with the lower port of the second chamber between the II sealing ring and the III sealing ring at the rear of the stern tube, and the fourth pipeline is connected with the upper port, during the launching of the ship, whether the seawater flows out from the end of the third pipeline can be observed to judge the sealing performance of the I sealing ring and the II sealing ring at the rear of the stern tube, so that the purpose of preventing the seawater from entering the stern tube during the launching of the ship is achieved, and the sealing performance of the stern sealing is also detected.

A marine propulsion system includes a first marine propulsion device and a second marine propulsion device. The first marine propulsion device includes an engine, a first propeller shaft to receive a driving force from the engine, and a first controller configured or programmed to control the engine. The second marine propulsion device includes an electric motor, a second propeller shaft to receive a driving force from the electric motor, an electric circuit connected to the electric motor to drive the electric motor, and a second controller configured or programmed to control the electric motor. The first controller is configured or programmed to put a limitation on an output of the engine when the electric motor is not being driven.

A boat and a propeller assembly for a boat. The propeller assembly includes a propeller and a thrust bearing, and the thrust bearing is made of a harder material than the propeller. The boat may also include a hull, a drive shaft, and a motor. The motor may be positioned within the hull and configured to rotate the drive shaft. The drive shaft may extend through a hull bottom of the hull and the propeller assembly may be positioned forward of a transom of the hull and beneath the hull bottom. The propeller may include a central hub having a hole capable of having the drive shaft inserted therethrough. The thrust bearing may be located in the hole of the central hub and secured to the propeller such that the thrust bearing and the propeller form a unified assembly.

Described herein are examples of stiffening shafts, which in some cases are adapted to couple to a marine vessel. An exemplary stiffening shaft can be used to extend a motor from the marine vessel or be used as a shallow water stick anchor. The exemplary stiffening shafts can include a plurality of linked vertebrae (300) stacked to form a column and at least one inelastic tension element (314) threaded longitudinally through the plurality of vertebrae. The shaft can have a flexible configuration when the at least one tension element is released and a stiffened linear configuration when the tension element is tensed to react to torque and bending moments. Alternatively, the stiffening shaft can be used as a shallow water stick anchor for a marine vessel by piercing the bottom of a marine environment (e.g., a sea bed, a lake bed, a river bed, etc.).

The propulsion unit including a casing having an inner curved surface and an outer curved surface, at least one tire disposed within the casing within a duct defined by the inner curved surface and the outer curved surface, a first propeller and a second propeller having a plurality of blades extending from within the casing toward a center axis of the casing, and one or more motors housed within the casing, the one or motor being configured to operate the at least one tire, the first propeller, and the second propeller independently of one another. There is also provided a vehicle with one or more propulsion units of the present disclosure.

The application discloses a flexible tail fin propeller driven by a connecting rod mechanism, which comprises a mounting plate, a tail fin oscillating mechanism, two oscillating parts and flexible tail fins, a power transmission mechanism, a direction adjusting mechanism and the like.

The present disclosure relates to an electric POD marine drive unit, comprising an electric machine being submersible, the electric machine has a rotor and a stator, the rotor is rotatable within the stator, the stator has an inner face arranged opposite the rotor and an outer face, wherein the outer face of the stator functions as an outer housing of a part of the drive unit.

To provide a seal device with simple pressure control. A seal device 1 includes a tubular body 10 through which a rotating shaft 2 extends, and a seal ring 25 attached to the tubular body 10 and sealing between the tubular body 10 and the rotating shaft 2, the seal device having at least two seal spaces S5, S6 with the seal ring 25 interposed therebetween. A sealing fluid OL3 is introduced into a seal space S5 from outside, and the seal space S5 and a seal space S6 are in communication with each other via a flow passage 6. The seal device 1 further includes a pressure regulator 30 disposed in the flow passage 6 and configured to regulate pressure of the sealing fluid introduced into the seal space S5 and introduce the sealing fluid into the seal space S6.

The present invention relates to a pod drive that can improve the cooling performance of a built-in motor. An embodiment comprises a motor that is disposed inside a pod and provided with a stator and a rotor in order to provide rotational force to a drive shaft. The stator includes: a stator core that is fixed inside the pod and surrounds the drive shaft; a coil that is wound around the stator core; a plurality of stator channels through which a refrigerant flows and which are arranged along the axial direction of the stator core and extend in a circumferential direction inside the stator core; and a plurality of stator guides which extend radially and are arranged, spaced a certain distance from each other along the circumferential direction of the stator, in each of the stator channels. At least some of the plurality of stator guides may include a curved portion formed by curving radial outer ends.

A marine vessel has a hull, an electric motor configured to operate a propulsor for generating a propulsive force for propelling the marine vessel in water, port and starboard rear ballast cavities being configured to take on ballast water for modifying a wake produced by the marine vessel in the water, and port and starboard battery banks which provide battery power to the electric motor. The port and starboard battery banks are located above the port and starboard rear ballast cavities, respectively. A driveshaft assembly comprises a driveshaft which is caused to rotate by operation of the electric motor and an oil-filled driveshaft housing on the driveshaft. A propulsor mounted on the driveshaft generates a propulsive force in the water. A method of installing the port and starboard battery banks into the marine vessel is also provided.

A power transmission device configured to transmit power of an engine provided in a vehicle traveling on at least one of water and in water to a propeller of the vehicle, the power transmission device including: an input shaft configured to input the power from the engine; an output shaft configured to output the power to the propeller; and a magnetic gear rotary machine magnetically coupling the input shaft and the output shaft. The magnetic gear rotary machine includes: a magnet rotor coupled to the input shaft; a pole piece rotor coupled to the output shaft; and a stator having a stator core extending in a circumferential direction at an outer side in a radial direction from the pole piece rotor and a stator coil disposed at the stator core.