Paddle radial rotation angle measuring device

Abstract

The invention relates to a blade radial rotation angle measuring device, which is used for measuring and recording a rotation angle corresponding to the radial direction of a blade during blade torque measurement, and belongs to the field of geometric quantity measurement. According to the device, a fixed shaft is matched with a blade torque measuring device, a rotary drive plate is used for installing a circular grating ruler for angle measurement, a reading head is installed at the end of the fixed shaft, and the radial structural symmetry of a rotary part of the device is guaranteed. The rotating drive plate is used for positioning and clamping the blades, and a symmetrical structure is designed, so that additional torque brought to the device in the rotating process is avoided. The angle of the original position is controlled by using the rotating drive plate and a group of magnets with seats of the fixed shaft, so that the consistency of the initial measurement angles after different paddles are clamped is ensured, and the repeatability of angle measurement is ensured. The spring plunger is used for eliminating a gap needed by clamping and a tiny angle difference generated during forward and reverse rotation switching, and the accuracy of blade angle measurement is guaranteed.

Description

technical field [0001] The invention relates to a blade radial rotation angle measuring device, which belongs to the field of angle measurement in the field of geometric measurement. Background technique [0002] The propeller engine is composed of multiple blades. When assembling, it is necessary to select the blades with the axial and radial moment values ​​in the same range to ensure the performance of the engine. Due to the asymmetric special helical structure of the blade in the radial direction, the radial moment values ​​corresponding to different rotation angle directions are also different. Therefore, when measuring the radial moment of the blade, it is necessary to first determine the value of the corresponding rotation angle of the blade. [0003] At present, the angle measurement of the blade is mainly performed by an additional measuring device on the outside of the blade. There are angle measuring equipment such as rulers and bubble levels, which are directly...

AI Technical Summary

Problems solved by technology

[0004] Aiming at the problem that the existing blade angle measurement accuracy is low and the angle of blade rotation around its axis cannot be directly measured, the present invention discloses a blade radial rotation angle measurement device, the purpose of which is to provide A high-precision measuring device that can directly read the rotation angle of the propeller

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