Full circle swinging propeller hydraulic distance-adjusting mechanism

Abstract

The invention discloses a full circle swinging propeller hydraulic distance-adjusting mechanism. The back end of a piston rod of a hydraulic oil cylinder is coaxially and fixedly connected with the front end of a push-pull rod in series, and the push-pull rod coaxially penetrates through a central through hole of a transmission shaft. The back end of the transmission shaft is matched with a flange hub through a taper, the flange hub is fixedly connected with a propeller hub, and a middle segment of the transmission shaft is fixedly sleeved with a big bevel gear in coaxial mode. The big bevel gear is mutually meshed with a small bevel gear. The push-pull rod is of a ladder shaft structure, and the big end of a ladder shaft is positioned between two thrust self-aligning bearings which are coaxial, and is fixedly matched with inner rings of the two thrust self-aligning bearings. Guide motion blocks are sleeved on the push-pull rod in clearance mode, and simultaneously and fixedly in sleeved connection with outer rings of the two thrust self-aligning bearings, and rotating of the guide motion blocks does not affect the push-pull rod. When the hydraulic oil cylinder does not rotate, stress of the transmission shaft is balanced, and reliability, stability and maintenanceability are improved, promoting efficiency is improved, and sealing difficulty of a hydraulic oil path is reduced.

Description

technical field [0001] The invention relates to a pitch-adjusting mechanism for ship propellers, in particular to a pitch-adjusting mechanism for full-turn propellers. Background technique [0002] On low-power ships, manual mechanical operation is generally used to change the pitch of the propeller. For medium-sized and large ships, hydraulic control is widely used. The propeller hydraulic pitch control mechanism is a kind of movement that can convert the pressure signal transmitted by the hydraulic system into a mechanism, and convert the pressure energy into mechanical energy through the hydraulic cylinder, so as to achieve the purpose of adjusting the pitch of the rotating blade, so that the ship or platform can operate under any sailing conditions. It can make full use of the full power of the main engine. It is characterized by large output, flexible maneuverability and easy remote control, making the operation of the ship or platform faster, safer and more reliable, w...

AI Technical Summary

Problems solved by technology

The disadvantages of this hydraulic cylinder front mechanism are:

[0009] 3. It is necessary to install a hollow coupling and an oil distribution ring, which occupy the axial space and affect the structural layout of the lower gear box, resulting in a very long lower gear box and increased volume, which affects its hydrodynamic performance and the propulsion of the propeller. Efficiency, which ultimately increases fuel consumption while running, affecting propeller economy

[0010] 4. Increase the weight of the propeller and increase the cost of manufacturing

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