Blade swing control mechanism of cycloid propeller
A cycloidal propeller and blade technology, which is applied to rotary propellers, mechanical gear transmissions, etc., can solve the problems of difficult maintenance, slow response, and short service life.
Active Publication Date: 2021-06-25
JILIN UNIV
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Problems solved by technology
However, both of the above two methods have shortcomings. The hydraulic control type has low precision, slow response, and difficult maintenance, while the connecting rod slider type has problems such as serious wear and short service life.
Method used
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Embodiment Construction
[0035] Such as Figure 1 to Figure 3 , Figure 10 to Figure 11 As shown, the blade swing control mechanism of the present invention includes a rotary box, an eccentric control rod, a multi-linkage mechanism for controlling blade swing, a blade, a blade shaft, and a synchronous linkage mechanism to ensure that the blade shaft and the connecting rod shaft are at the same speed. Each group of blade swing control mechanisms controls the movement of one blade, and the number of blade swing control mechanisms in the propeller is determined by the number of blades; wherein, the rotary box 1 is composed of a box body 11 and a top cover 12, and the box body 11 is cylindrical. Hollow; there are stepped holes 111 on the outer edge of the inner chassis of the box body 11, the number of which is consistent with the number of blades, and circular grooves I112 and II113 are formed on the radial direction of the chassis. When the number of blades is not more than 4, the circular grooves I112 ...
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A blade control mechanism of a cycloid propeller is provided, belonging to the technical field of marine mechanical propulsion devices. The swing rule of blades is controlled by means of a multi-connecting-rod mechanism which can be split into a crank rocker mechanism and a double-rocker mechanism with a connecting rod of the crank rocker mechanism as a driving rod. The driving rod and a driven connecting rod of the double-rocker mechanism are always crossed with each other. The lengths and spatial distribution of the rods and the shafts are reasonably set according to the number of the blades, the radius of a rotation box and the required blade swinging rule. According to the blade control mechanism, rotation of the eccentric control rod relative to the rotation shaft of the rotation box is converted into blade swing which can provide efficient thrust and has a specific rule through the multi-connecting-rod mechanism, so that the cycloid propeller equipped with the blade control mechanism can provide thrust in any direction and in a large change range, and the blade control mechanism has the advantages of being flexible, efficient and easy to operate.
Description
technical field [0001] The invention belongs to the technical field of marine machinery propulsion devices, and in particular relates to a swing control mechanism for cycloid propeller blades. Background technique [0002] The cycloidal thruster is an underwater thruster whose rotary axis is perpendicular to the forward direction of the ship, and the magnitude and direction of the thrust of the thruster can be changed by changing the position of its internal eccentric control point. Compared with other ship propellers, cycloidal propellers have the characteristics of high flexibility and high propulsion efficiency, and are widely used in some large ships and other marine engineering equipment. [0003] In addition to the cycloidal propeller produced by Voith Group in Germany, most of the cycloidal propellers independently designed at home and abroad currently use hydraulic devices or connecting rod slider mechanisms to control the swing of the blades. The device controls th...
Claims
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Login to View More IPC IPC(8): B63H1/10B63H23/04
CPCB63H1/10B63H23/04
Inventor 张志君朱宝康朱明昊邹节志刘集善侯振华许堂虹王皋李天歌张士强
Owner JILIN UNIV