Novel shaftless propeller

Abstract

The invention discloses a novel shaftless propeller. The novel shaftless propeller comprises at least three thrust units, a hub with an eccentric circular structure, a propeller, a rotary oil distribution valve and a compression spring, wherein the thrust units are uniformly distributed on a shell to push the eccentric circle to do planar motion and then drives the propeller to do rotary motion. According to the novel shaftless propeller, a hydraulic oil is adopted as a power source, the oil is supplied to each thrust unit through the rotary oil distribution valve, and the rotation speed of the propeller can be controlled by changing the oil supply frequency of the rotary oil distribution valve; and compared with an existing shaft propeller, a complex transmission mechanism and a speed reducing mechanism are omitted, the size is reduced, stepless speed regulation can be realized, the speed regulation range is large, the operation performance is good, the generated torque is large, andthe heat dissipation effect is good.

Description

technical field [0001] The invention belongs to the technical field of propellers, in particular to a shaftless propeller. Background technique [0002] At present, most of the propellers adopt the arrangement form in which the output shaft of the motor drives the rotation of the propeller blades, that is, the shaft propeller. The principle of a shafted propeller is relatively simple. Taking a marine propeller as an example, a power cabin is usually installed on the ship, and an internal combustion engine is installed in the power cabin. The power of the internal combustion engine is connected to the propeller through the main shaft, and finally the main shaft drives the propeller to rotate to generate thrust. Shafted propulsion systems have several significant disadvantages: (1) the shafting used to transmit power to the propeller can prevent fluid from passing through the propeller, allowing materials such as algae or similar to entangle the propeller; With the increase o...

AI Technical Summary

Problems solved by technology

Shafted propulsion systems have several significant disadvantages: (1) the shafting used to transmit power to the propeller can prevent fluid from passing through the propeller, allowing materials such as algae or similar to entangle the propeller; With the increase of the power of the main engine, the volume of the propulsion shaft system will become larger, the structure will be extremely complex, and the heat dissipation requirements will gradually increase; (3) The increase in the length of the propulsion shaft system and the existence of the sealing system make the propulsion system The loss increases during the process, the transmission efficiency decreases, and the use cost is increased

However, it is only suitable for occasions with relatively small power. Once the power demand is large, there are still defects such as large volume, difficult heat dissipation, large energy loss, high cost and difficult maintenance.

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