Propeller and blade static balance detection device
A detection device and static balancing technology, which is applied in the field of variable pitch propellers, can solve problems such as propeller static unbalance, blade shape inconsistency, assembly error, etc., and achieve low failure rate and simple and reliable structure
Pending Publication Date: 2022-03-29
CHINA ACAD OF AEROSPACE AERODYNAMICS
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Problems solved by technology
[0002] In the actual production process of the propeller, due to the inconsistency in the shape of the production blades and assembly errors, the center of mass of the propeller will not be on its axis of rotation, resulting in static unbalance of the propeller
Or collide with air or other foreign objects during long-term operation, causing the blades to bend, curl, and deform, causing the propeller to lose balance. After the balance is lost, abnormal phenomena will appear in the shafting, main engine and body, and the vibration will increase. It is difficult to adjust its flight direction and attitude, and it will cause the plane to crash in severe cases
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[0024] The technical solutions of the present invention will be clearly and completely described below in conjunction with the embodiments. Obviously, the described embodiments are part of the embodiments of the present invention, but not all of them. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without making creative efforts belong to the protection scope of the present invention.
[0025] In describing the present invention, it is to be understood that the terms "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", " Back", "Left", "Right", "Vertical", "Horizontal", "Top", "Bottom", "Inner", "Outer", "Clockwise", "Counterclockwise", etc. or The positional relationship is based on the orientation or positional relationship shown in the drawings, which is only for the convenience of describing the present invention and simplifying the description, rather t...
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The invention provides a propeller and blade static balance detection device. The propeller and blade static balance detection device comprises a connecting seat; the small shaft horizontally penetrates through the connecting seat and is rotationally connected with the connecting seat, one end of the small shaft is connected with a measured body, and the other end of the small shaft is connected with a counterweight disc. Whether the tested body meets the static balance requirement or not is judged by rotating the tested body to observe the stop position of the tested body, the structure is simple and reliable, and the failure rate is low.
Description
technical field [0001] The invention relates to the technical field of variable-pitch propellers, in particular to a static balance detection device for propellers and blades. Background technique [0002] In the actual production process of the propeller, due to the inconsistency in the shape of the production blades and assembly errors, the center of mass of the propeller will not be on its axis of rotation, resulting in static imbalance of the propeller. Or collide with air or other foreign objects during long-term operation, causing the blades to bend, curl, and deform, causing the propeller to lose balance. After the balance is lost, abnormal phenomena will appear in the shafting, main engine and body, and the vibration will increase. It is difficult to adjust its flight direction and attitude, and it will cause the plane to crash in severe cases. Therefore, the propeller must be statically balanced to achieve the allowable balance accuracy, or the mechanical vibration...
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IPC IPC(8): G01M1/12
CPCG01M1/12G01M1/125
Inventor 刘兵兵于靖波张子俊杨子盟康国剑张辉刘培元
Owner CHINA ACAD OF AEROSPACE AERODYNAMICS