Petrol engine power surfboard with improved structure

Abstract

The invention discloses a petrol engine power surfboard with an improved structure. Surfboard advancing direction serves as the reference; the inner part of a surfboard body forms a hollow cavity which is provided with an opening on the surfboard body; a power unit is contained in the hollow cavity; a front cover plate is detachably and fixedly covered on the hollow cavity; the core part of the power unit is a petrol engine; the core part of a boost unit is a boost pump comprising a propeller and a transmission shaft; the power output end of the power unit is connected with the transmission shaft of the boost pump; a control unit controls power unit output power and surfboard advancing direction; the propeller is fixedly sheathed on the transmission shaft; and a guide plate is fixed in the rear end of the pump case. The embodiment can jet flow in a straight line, thus improving thrust; the invention only needs to bear resistance borne by the surfboard body in water so as to improve navigational speed, so that the surfboard not only ensures that a sporter can enjoy surfing on calm water, but also has beautiful appearance.

Description

Technical field [0001] The invention relates to a surfboard, in particular to a surfboard driven by a gasoline engine and improved propeller structure. Background technique [0002] Surfing is deeply loved by people because of its thrills and exercise. Ordinary surfboards can only be used with the help of the thrust of wind and waves. Only when the wind and waves are strong, ordinary surfboards can make the surfing show its unique charm. When the wind and waves are small, using ordinary surfboards cannot enjoy the fun of surfing. It is normal on calm waters. The surfboard loses its function. So someone invented a surfboard with a drive device. This type of surfboard is generally driven by a motor to drive an underwater propeller, and then the propeller pushes the surfboard forward, but generally the existing underwater propellers use water Spiral jet, the force generated by the spiral jet of water can be divided into forward thrust and rotation component force, and the effectiv...

AI Technical Summary

Problems solved by technology

Ordinary surfboards can only be used with the help of the thrust of wind and waves. Only when the wind and waves are strong, ordinary surfboards can make surfing show its unique charm. When the wind and waves are small, you cannot enjoy the fun of surfing. surfboard is useless

So some people in the industry have invented surfboards with driving devices. This type of surfboard generally drives an underwater propeller through a motor, and then the propeller pushes the surfboard forward. Spiral ejection, the force generated by the spiral ejection of water flow can be divided into forward thrust and component force in the direction of rotation, and the effective force to propel the hull or surfboard forward is forward thrust, so the water flow The force generated by spraying in a spiral shape cannot be fully converted into forward propulsion power, which reduces the effective work

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