Gear drive type blade pitch regulating mechanism and blade pitch regulating method

A technology of pitch adjustment and gear transmission, which is applied in ship propulsion, ship parts, ships, etc., can solve the problems of difficult adjustment of rotation angle, poor data reproducibility, and low accuracy, achieving no axial displacement, good stability, Adjust the effect of turning lightly

Active Publication Date: 2011-10-05
SHANGHAI ZHUGUANG MACHINERY +1
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  • Abstract
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  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0010] At present, in the actual test / experimental link, the common / known method of adjusting the pitch of the model adjustable propeller (actually adjusting the angle of rotation of the propeller blade relative to a certain reference plane) is to use manual pitch / angle adjustment method, which uses a combination of scales, reticles and magnifying glasses for alignment and positioning, and its rotation angle is difficult to adjust, with low accuracy, laborious, time-consuming, low efficiency, and poor data reproducibility

Method used

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  • Gear drive type blade pitch regulating mechanism and blade pitch regulating method
  • Gear drive type blade pitch regulating mechanism and blade pitch regulating method
  • Gear drive type blade pitch regulating mechanism and blade pitch regulating method

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Embodiment Construction

[0027] The present invention will be further described below in conjunction with the drawings.

[0028] figure 1 In the above, the gear transmission type blade pitch adjustment mechanism includes a hub and a blade 4-1. The root of the blade is provided with a root shaft 4-2 extending into the hub, and the hub passes through the root of the blade. The shaft is connected to the blades. The hub includes a first half hub 1 and a second half hub 6. The first and second half hubs are of Hafu type structure; the first and second half hubs are arranged The hub fixing screw 8 consolidates the split first and second half hubs that are buckled in opposite directions into one body; the invention lies in that a gear drive is provided on the blade root shaft and the first half hub Type blade pitch adjustment assembly; at the end of the blade root shaft, a positioning retaining ring 10-1 is provided, and a positioning groove 10-2 is correspondingly provided on the first and second half hubs.

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Abstract

A gear driving style blade pitch adjusting mechanism and a corresponding blade pitch adjusting method belong to the watercraft propulsion apparatus field. The blade pitch adjusting mechanism comprises a propeller hub and blades; a root shaft is arranged at the root of blade; the propeller hub appears as a pair-style structure formed by a first sub propeller hub and a second sub propeller hub; a propeller hub fastening screw is respectively arranged onto the first and second sub propeller hubs; a gear driving style blade pitch adjusting component is arranged onto the blade root shaft and the first sub propeller hub; a locating ring is arranged at the end of the blade root shaft; and a locating groove is correspondingly arranged on the first and second sub propeller hubs. The invention also provides a blade pitch adjusting method for the mechanism. The technical proposal of the invention is provided with the simple structure, convenient operation process, stable and reliable performance, high blade pitch locating precision and high blade pitch adjusting efficiency. The invention can be widely used for the designing, developing and testing fields of adjustable propellers of various models.

Description

Technical field [0001] The invention belongs to the field of ship propulsion devices or steering devices, and in particular relates to a propeller blade pitch adjustment device used for the design, development and testing of model adjustable propellers. Background technique [0002] Ship propulsion devices play a decisive role in the economics of ship operation. The most important parameters when choosing a ship's propulsion system are investment costs, space requirements, propulsion efficiency or the corresponding fuel consumption rate, reliability, and effective utilization of the propulsion system during ship operation. [0003] In the design of ship propulsion device, the interaction between engine, propeller and ship hydrodynamic characteristics is of special significance; only when their combination is considered and the overall system configuration is optimal, the ship propulsion system can be regarded as cost reasonable. [0004] Reducing ship resistance, improving the hydr...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B63H3/12B63B9/00
Inventor 金文达吴俊谢永忠
Owner SHANGHAI ZHUGUANG MACHINERY
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