Static balancing method of whole propeller combination of adjustable pitch propellers

A technology of static balance and controllable pitch propellers, which is applied in the field of static balance of controllable pitch propellers and marine adjustable pitch propellers. It can solve the problems of narrow application range and difficult operation, and achieve convenient operation , Improve production efficiency, save judgment time

Inactive Publication Date: 2010-05-12
WUHAN MARINE MACHINERY PLANT
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The purpose of the present invention is to overcome the defects and problems of difficult operation and narrow application range in

Method used

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  • Static balancing method of whole propeller combination of adjustable pitch propellers
  • Static balancing method of whole propeller combination of adjustable pitch propellers
  • Static balancing method of whole propeller combination of adjustable pitch propellers

Examples

Experimental program
Comparison scheme
Effect test

Example Embodiment

[0028] Example 1:

[0029] In the following, a five-blade propeller is taken as an example to further illustrate a method of static balance of the entire propeller combination of a controllable pitch propeller.

[0030] The weight of the entire propeller of the propeller: 12635kg, propeller diameter: 4.1m, speed: 208r / min, manufacturing accuracy: IS0484, class I, the unbalanced moment Mp of the entire propeller is 7301.1kgmm

[0031] First, the unbalance value M1 of the hub assembly 1 is 1825.3kgmm measured according to the above method.

[0032] Then measure the unbalance value M2 of the blade group, the steps are as follows:

[0033] The static balance test data of each blade is as follows:

[0034] Numbering

[0035] See image 3 , P is the weight of each blade, Y is the distance from the center of gravity of the blade to the centerline d of the controllable pitch propeller, and Z is the distance from the center of gravity of the blade to the centerline c of the blade. For the fiv...

Example Embodiment

[0082] Example 2:

[0083] In the following, a four-blade propeller is taken as an example to further illustrate a method of static balance of the entire propeller combination of a controllable pitch propeller.

[0084] The weight of the entire propeller of the four-blade propeller: 11530kg, propeller diameter: 4.2m, speed: 179.3r / min, manufacturing accuracy: IS0484, class I. The unbalanced moment Mp of the whole propeller: 8966.3kgmm.

[0085] First, the unbalance value M1 of the hub assembly 1 is 2241.6kgmm measured according to the above method.

[0086] Then measure the unbalance value M2 of the blade group, the steps are as follows:

[0087] The static balance test data of each blade is as follows:

[0088] Numbering

[0089] See image 3 , P is the weight of each blade, Y is the distance from the center of gravity of the blade to the centerline d of the propeller, and Z is the distance from the center of gravity of the blade to the centerline c of the blade. For a four-blade p...

Example Embodiment

[0115] Example 3:

[0116] In the following, a three-blade propeller is taken as an example to further illustrate a method of static balance of the entire propeller combination of a controllable pitch propeller.

[0117] The weight of the entire propeller of the three-blade propeller: 9630kg, propeller diameter: 4.1m, speed: 208r / min, manufacturing accuracy: IS0484, class I, and the unbalanced moment Mp of the entire propeller: 5564.7kgmm.

[0118] First, the unbalance value M1 of the hub assembly 1 is 1391.2kgmm measured according to the above method.

[0119] Then measure the unbalance value M2 of the blade group, the steps are as follows:

[0120] The static balance test data of each blade is as follows:

[0121] Numbering

[0122] See image 3 , P is the weight of each blade, Y is the distance from the center of gravity of the blade to the centerline d of the controllable pitch propeller, and Z is the distance from the center of gravity of the blade to the centerline c of the blad...

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Abstract

The invention relates to a static balancing method of a whole propeller combination of adjustable pitch propellers. The method comprises the following steps: firstly, the unbalanced value M1 of a propeller hub component is measured, and then the unbalanced value M2 of a blade group is calculated, and if M1 plus M2 is equal to or smaller than Mp, the static balancing of the adjustable pitch propeller is qualified. The measuring of the unbalanced value M1 of the propeller hub component means that the propeller hub component is assembled firstly, a front supporting shaft and a rear supporting shaft are respectively installed on two lateral ends of the propeller hub component, simultaneously, hold-down strips are installed on two longitudinal ends of the propeller hub component, then the front supporting shaft and the rear supporting shaft are laid on a roller pin, below which a bracket is arranged, and then the unbalanced value M1 of the propeller hub component is measured. The calculating of the unbalanced value M2 of the blade group means that all the blades are numbered in sequence, then all the blade groups are listed in sequence according to the permutation and combination of the numbers, and then the unbalanced value M2 of each blade group is calculated. The method has the advantages that not only the requirement on measuring tools is reduced, and the cost is saved, but also the operation is convenient, time is saved, and the production efficiency is improved..

Description

technical field [0001] The invention relates to a static balancing method of a propeller, in particular to a static balancing method of a pitch control propeller, and is particularly applicable to a static balancing method of a marine adjustable pitch propeller. Background technique [0002] The ISO 484 / 1 specification clearly stipulates that the propeller device must meet the requirements of static balance, and its indicator is that the hanging weight of the blade tip should not be greater than the allowable unbalance value. The controllable pitch propeller device belongs to the category of propeller devices. At present, the Static balance methods all adopt the method of measuring the hanging weight of its blade tip, see figure 1 , the point of the downward arrow in the figure is the point where the leaf tip hangs heavy. The specific method is to assemble the blade and the hub assembly, put them on two horizontal cylindrical guide rails, and then hang weight on the tip of ...

Claims

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Application Information

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IPC IPC(8): G01M1/12
Inventor 邱晓峰刘丽飞李磊程涛
Owner WUHAN MARINE MACHINERY PLANT
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