Pinhole inserted yaw brake of wind electricity generator

A wind turbine and yaw braking technology, which is applied in the control of wind turbines, wind turbines, wind power generation, etc., can solve the problems of brake disc deformation, difficulty in adopting fail-safe, difficult springs, etc., to achieve reliable braking, The effect of simple structure and small operation force

Inactive Publication Date: 2006-11-15
TSINGHUA UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Due to the harsh natural environment and the leakage of hydraulic oil, lubricating oil, etc. that cannot be completely avoided, the friction coefficient will be greatly reduced and the reliability of the brake will be reduced.
③The brake disc may be deformed, causing additional friction when braking is not required, and increasing the resistance of the yaw drive
④The system structure is more complex and the cost is higher
⑤ Difficult to adopt "fail-safe" design
A considerable amount of friction is required between the pads and the disc, and it is quite difficult to use springs to generate such a high pressure

Method used

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  • Pinhole inserted yaw brake of wind electricity generator
  • Pinhole inserted yaw brake of wind electricity generator
  • Pinhole inserted yaw brake of wind electricity generator

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Embodiment Construction

[0020] The specific structure of the present invention will be further described below in conjunction with the accompanying drawings.

[0021] figure 1 It is a schematic diagram of straight-line development of radial or axial boreholes set on the bearing ring. A series of conical holes are arranged at equal intervals in the axial or radial direction along the same circumference. According to the requirements of yaw accuracy, the hole center distance of these holes can be greater than the diameter of the hole, equal to the diameter of the hole or smaller than the diameter of the hole. figure 2 It is a structural schematic diagram of a conical pin, which can be a single-taper conical pin, a double-taper conical pin, or a conical pin with a spherical upper end. The inner and outer bearing rings of the yaw slewing ring are static and dynamic. The stationary bearing ring is fixed to the tower, and the rotating bearing ring is connected to the base of the nacelle. The conical ho...

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Abstract

In the invention, a conical pin and its driving device are mounted in the fixing and rotating parts of the rotary supporting mechanism of wind-mill generators with the drill hole or there is a drill hole on the brake. The conical pin and its driving device are mounted at the proper position of the rotary chassis.

Description

technical field [0001] The invention relates to a yaw braking device of a wind power generator, in particular to a plug-in yaw braking device of a wind power generator, which belongs to the technical field of wind power generation equipment. Background technique [0002] Existing yaw braking adopts hydraulic brakes, and the friction plates of the brakes are pressed against the brake discs under oil pressure, and the braking force is provided by the friction between the two. The main disadvantages of this type of brake are: 1. High oil pressure is required: 14-16MPa, so a special high-pressure hydraulic system is required. ②The brake disc must be kept clean. Due to the harsh natural environment and the leakage of hydraulic oil, lubricating oil, etc. that cannot be completely avoided, the friction coefficient will be greatly reduced and the reliability of braking will be reduced. ③The brake disc may be deformed, causing additional friction when braking is not required, and i...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F03D7/00F03D80/70
CPCY02E10/72
Inventor 索沂生张志军叶柏生
Owner TSINGHUA UNIV
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