Oil cylinder and water jet propulsion device for water jet propulsion device

Abstract

The invention discloses an oil cylinder for a water spray propelling device. The oil cylinder for the water spray propelling device comprises a cylinder barrel, a piston rod, a first end cover, a second end cover and a locking mechanism, and the cylinder barrel is provided with an oil liquid flow channel extending from the end surface of one end of the cylinder barrel to the end surface of the other end of the cylinder barrel. The piston rod is inserted into the cylinder barrel, one end of the piston rod extrudes out of the end surface of the end of the cylinder barrel, a piston of the pistonrod divides the internal space of the cylinder barrel into a first oil cavity and a second oil cavity, and the first oil cavity communicates with the oil liquid flow channel. The first end cover sleeves one end of the piston rod and is in press fit on the end surface of one end of the cylinder barrel. The second end cover is located at the other end of the cylinder barrel and is in press fit on the end surface of the other end of the cylinder barrel, and a first oil opening used for communicating with the oil liquid flow channel and a second oil opening used for communicating with the second oil cavity are formed in the end surface of the second end cover. The locking mechanism is used for fixing the cylinder barrel and the second end cover to a stern plate of the water spray propelling device. The oil cylinder for the water spray propelling device can simplify the arrangement of pipelines conveying oil liquid, and reduce the risk of oil liquid leakage.

Description

technical field [0001] The invention relates to the technical field of water jet propulsion, in particular to an oil cylinder used for a water jet propulsion device and the water jet propulsion device. Background technique [0002] The water jet propulsion device is a kind of ship propeller. It drives the ship through the reaction force generated by the jet water flow. When turning, the steering cover installed on the nozzle changes the jet direction of the water flow to realize the turning of the ship. The steering hood of the waterjet propulsion device is usually driven by an oil cylinder to control its changing angle. At present, the oil cylinder that drives the steering cover is installed outside the cabin, and the base of the oil cylinder is hinged with the bracket outside the cabin, the piston rod of the oil cylinder is hinged with the adjustment lug of the steering cover, and the oil used for the operation of the oil cylinder passes through the oil tank in the cabin. ...

AI Technical Summary

Problems solved by technology

[0003] However, since the existing oil cylinder is installed outside the cabin, and the oil needs to be led from the cabin to the outside through the pipeline during use, the pipeline is more complicated and the risk of oil leakage is increased

At the same time, because the oil cylinder is hinged with the bracket, the oil cylinder will also swing up and down when the oil cylinder controls the steering of the steering cover, which will also cause the pipeline to swing together, thereby increasing the risk of pipeline damage and oil leakage

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