Device and method for measuring tooth thickness of slewing bearing gear of wind power generating set

Abstract

The invention discloses a wind turbine generator system pivoting support gear tooth thickness measuring device which is used for measuring with a feeler gauge. The measuring device comprises a horizontal substrate. A protruding measurement calibrator is arranged at the middle part of the horizontal substrate. When measurement is carried out, the horizontal substrate is fixedly set the tooth top surface of two adjacent gear teeth, and the measurement calibrator stretches into the tooth pitch between two adjacent gear teeth. One side of the measurement calibrator contacts the tooth surface of one gear tooth. A measurement pitch is formed between the other side of the measurement calibrator and the tooth surface of the other gear tooth, so that the feeler gauge is inserted into the measurement pitch for measurement. The invention further discloses a measuring method based on the measuring device. The measuring device provided by the invention has the advantages of simple and compact structure, easy manufacture, convenient and fast operation, high measuring precision, and greatly improved measuring efficiency.

Description

technical field [0001] The invention mainly relates to the technical field of wind power, in particular to a device for measuring tooth thickness of a slewing bearing gear of a wind power generating set and a measuring method. Background technique [0002] Electric meshing transmission is one of the mainstream pitch / yaw methods of wind turbines at present. Its working principle is: the motor drives the reduction box, and through the meshing between the reduction box and the slewing ring gear, the rotation drives the nacelle / Blades, so as to realize the pitch / yaw function of the wind turbine. Gear meshing will lead to wear of slewing ring gears. How to effectively detect the tooth thickness wear of slewing ring gears is the key to optimizing the control strategy of key components of wind turbines, optimizing the lubrication strategy and reducing the cost of key maintenance and replacement. [0003] There are mainly two detection methods for the gear tooth thickness of the s...

AI Technical Summary

Problems solved by technology

[0005] 1. The number of profiles is large and difficult to operate: Take a wind farm with 25 2MW wind turbines as an example, if it is necessary to determine the tooth thickness of 4 slewing ring gears (3 pitches + 1 yaw) of a wind turbine The data is thoroughly investigated, and only 2% of the gears are profiling, so each wind turbine needs at least 14 gear profiling, and the number of profiling for a single wind farm will reach 350;

[0006] 2. The test results cannot be obtained directly: manufacturers of wind farms or wind turbines generally do not have special analysis instruments for gear profiling, and the profiling must be mailed to the slewing bearing manufacturer for analysis and processing

[0007] 3. High cost: Plastic materials such as clay, oil sludge, and cement are used to solidify under certain conditions or after a certain period of time to obtain the outer profile of the gear. The required materials, manpower, identification analysis, and time costs are all high, and it is not suitable for wind farm rotation. Fundamental measurement of tooth thickness and wear of supporting gears

[0009] 1. The accuracy of the measurement data is greatly affected by human operation: use the tooth thickness vernier caliper to measure the tooth thickness of the slewing ring gear, and at the same time ensure that the tooth height ruler is perpendicular to the top surface of the tooth and the tooth thickness ruler is parallel to the installation surface of the slewing ring Complete the "focus" and reading of the tooth thickness gauge oil scale; the slight angle deviation and reading deviation have a great influence on the measurement results

According to engineering measurement experience, affected by the spatial structure of the fan, visibility, measurer's operation standardization, proficiency, etc., different measurers measure the tooth thickness of the same gear, and the reading results have large deviations; and if the same measurer is used to measure, the measurement results will will not be able to effectively compare

[0010] 2. High time cost

Take the measurement of pitch slewing ring gear tooth thickness of wind turbine as an example (such as figure 1 As shown), due to the influence of the space structure of the impeller of the wind turbine, the measurement personnel can effectively carry out the standard operation of gear tooth thickness measurement only at the vertical pitch slewing bearing (blade A), and the accuracy of the measurement data is relatively high; the other two Because there is no good measuring fulcrum for the side blades (blade B, blade C), it is difficult for the measurement personnel to complete the "focusing" of the tooth thickness ruler oil level under the condition that the tooth height ruler is perpendicular to the tooth top surface and the tooth thickness ruler is parallel to the slewing bearing installation surface. " and readings; therefore, in order to ensure the accuracy of the measurement data, the measurement personnel must repeatedly evacuate the wind wheel → open the wind wheel lock → turn the wind wheel → lock the wind wheel → enter the wind wheel → measure the tooth thickness of the slewing ring gear (vertical side) Actions, many irrelevant actions, and affected by the wind resource of the wind farm, time-consuming uncontrollable, low efficiency

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