Blade bolt for controllable-pitch propeller

A technology of pitch-adjustable propellers and blades, applied in the directions of bolts, screws, nuts, etc., can solve the problem of insufficient assembly of blade bolts, and achieve the effect of increasing friction and increasing friction.

Inactive Publication Date: 2020-04-24
WUHAN MARINE MACHINERY PLANT
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

As a result, a large external force is required to screw the blade bolts. If the external force is not enough, the assembly of the blade bolts will not be in place.

Method used

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  • Blade bolt for controllable-pitch propeller
  • Blade bolt for controllable-pitch propeller

Examples

Experimental program
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Embodiment Construction

[0023] In order to make the object, technical solution and advantages of the present invention clearer, the implementation manner of the present invention will be further described in detail below in conjunction with the accompanying drawings.

[0024] An embodiment of the present invention provides a blade bolt for a controllable pitch propeller, figure 1 It is a schematic diagram of the use of the blade bolt provided by the embodiment of the present invention, and the blade bolt 100 is used for assembly between the crank pin plate 200 and the blade 300 . see figure 1 , the crank pin plate 200 is installed on the hub 400 , and the blade 300 is fixed on the crank pin plate 200 through the blade bolt 100 .

[0025] figure 2 It is a cross-sectional view of a blade bolt used for a controllable pitch propeller provided by an embodiment of the present invention, as shown in figure 2 As shown, the blade bolt 100 includes a main bolt 1 and a plurality of push pieces 2, the main ...

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PUM

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Abstract

The invention discloses a blade bolt for a controllable-pitch propeller, and belongs to the field of ships. Wherein the paddle bolt comprises a main bolt and a plurality of pushing pieces, the main bolt comprises a screw rod and a screw cap, a plurality of screw holes are formed in the screw cap, and one pushing piece is inserted into each screw hole. According to the invention, the plurality of pushing pieces abut against the blades, and under the action of the pushing pieces, the blades can be tightly attached to the crankpin disc, so that the friction force between the blades and the crankpin disc is increased, the looseness prevention is realized, and the connection and fixation of the blades and the crankpin disc are realized in a labor-saving manner.

Description

technical field [0001] The invention belongs to the field of ships, in particular to a blade bolt used for a controllable pitch propeller. Background technique [0002] The controllable pitch propeller is an important part of the propulsion device of the ship. Its structure mainly includes the blade, the crank pin disc and the propeller hub. The propeller blade is connected with the crank pin disc and fixedly installed on the propeller hub. [0003] The blade and the crank pin are connected by blade bolts, and the blade bolts are screwed by external force to realize the connection between the blade and the crank pin. [0004] However, as the specification of the controllable pitch propeller increases, the blade and the crank pin disk also increase accordingly. In order to securely connect the blade and the crank pin disk, the size of the blade bolts also increases together. As a result, a large external force is required to screw the blade bolts. If the external force is no...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F16B39/02F16B39/30F16B37/14F16B43/00F16B35/00B63H3/00
CPCB63H3/00B63H2003/004F16B35/00F16B37/14F16B39/02F16B39/30F16B43/00F16B43/001
Inventor 陈程关超程术潇王锦伟汪政
Owner WUHAN MARINE MACHINERY PLANT
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