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Main shaft brake lining of wind-driven generator and preparation method thereof

A technology of wind turbines and liners, which is applied in the direction of mechanical equipment, friction linings, gear transmission mechanisms, etc., can solve the problems of yaw nodding instability in the main engine cabin, only 1890 hours, and affect the normal power generation of wind turbines, and achieve dual wear The effect of small size, long service life and stable friction coefficient

Active Publication Date: 2016-03-23
JIANGXI HUAWU BRAKE
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The reliability of large-scale wind power equipment is a huge challenge in the design, manufacture and service of wind power equipment! Many technical problems have emerged in the process of assimilating foreign advanced wind power equipment manufacturing technology and localized matching in China, such as yaw friction and vibration noise, engine room brake spontaneous combustion, yaw friction couple severe scratches, self-excited vibration alarm shutdown and Equipment failures such as yaw nodding instability in the main engine room have seriously affected the normal power generation of wind turbines, making the annual average utilization hours of wind power equipment in my country only 1890 hours, far below the requirement of 2500 hours

Method used

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  • Main shaft brake lining of wind-driven generator and preparation method thereof
  • Main shaft brake lining of wind-driven generator and preparation method thereof
  • Main shaft brake lining of wind-driven generator and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0025] Wind turbine main shaft brake pad, the brake pad formula is:

[0026]

[0027]

[0028] The particle size of electrolytic copper powder is 200 mesh, the particle size of atomized tin powder is 300 mesh, the particle size of reduced iron powder is 100 mesh, the particle size of flake graphite is 80 mesh, the particle size of granular graphite is 40 mesh, and the particle size of aluminum hydroxide is 80 mesh, the particle size of chromium powder is 200 mesh.

[0029] The purity of copper powder in electrolytic copper powder is ≥99.8%, and the purity of tin powder in atomized tin powder is ≥98%.

[0030] The preparation method of the brake liner of the main shaft of the wind power generator comprises the following steps:

[0031] (1) Ingredients: Weigh each component material according to the ratio: electrolytic copper powder, atomized tin powder, reduced iron powder, flake graphite, aluminum hydroxide and chromium powder;

[0032] (2) Mixing: Put the weighed mate...

Embodiment 2

[0037] Wind turbine main shaft brake pad, the brake pad formula is:

[0038]

[0039] The particle size of electrolytic copper powder is 250 mesh, the particle size of atomized tin powder is 250 mesh, the particle size of reduced iron powder is 90 mesh, the particle size of flake graphite is 9 mesh, the particle size of granular graphite is 50 mesh, and the particle size of aluminum hydroxide is 90 mesh, the particle size of chromium powder is 250 mesh.

[0040] The purity of copper powder in electrolytic copper powder is ≥99.8%, and the purity of tin powder in atomized tin powder is ≥98%.

[0041] The preparation method of the brake liner of the main shaft of the wind power generator comprises the following steps:

[0042] (1) Ingredients: Weigh each component material according to the ratio: electrolytic copper powder, atomized tin powder, reduced iron powder, flake graphite, aluminum hydroxide and chromium powder;

[0043] (2) Mixing: Put the weighed materials into a d...

Embodiment 3

[0048] Wind turbine main shaft brake pad, the brake pad formula is:

[0049]

[0050] The particle size of electrolytic copper powder is 300 mesh, the particle size of atomized tin powder is 300 mesh, the particle size of reduced iron powder is 100 mesh, the particle size of flake graphite is 100 mesh, the particle size of granular graphite is 60 mesh, and the particle size of aluminum hydroxide is 100 mesh, the particle size of chromium powder is 300 mesh.

[0051] The purity of copper powder in electrolytic copper powder is ≥99.8%, and the purity of tin powder in atomized tin powder is ≥98%.

[0052] The preparation method of the brake liner of the main shaft of the wind power generator comprises the following steps:

[0053] (1) Ingredients: Weigh each component material according to the ratio: electrolytic copper powder, atomized tin powder, reduced iron powder, flake graphite, aluminum hydroxide and chromium powder;

[0054] (2) Mixing: Put the weighed materials into a...

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Abstract

The invention discloses a main shaft brake lining of a wind-driven generator. The brake lining is composed of, by weight, electrolytic copper powder of 55-65%, atomization tin powder of 1-8%, reduced iron powder of 5-15%, flake graphite of 5-12%, granular graphite of 5-10%, aluminum hydroxide of 5-15% and chromium powder of 8-15%. The invention further discloses a preparation method of the main shaft brake lining of the wind-driven generator. The brake lining is obtained through the steps of material proportioning, material mixing, cold blank compression forming, high temperature sintering in an elevator furnace, furnace cooling and final machining. The brake lining manufactured through the method is stable in friction coefficient, high in wear resistance, free of sparks in braking, long in service life and small in wear to mating plates, and can fully meet the braking requirement of a main shaft of the wind-driven generator.

Description

technical field [0001] The invention relates to a brake pad for a main shaft of a wind power generator. [0002] The invention also relates to a preparation method of the brake lining of the main shaft of the wind power generator. The invention belongs to the technical field of wind power generation braking system. Background technique [0003] The main shaft brake system is one of the essential components of the horizontal axis wind turbine, and plays a very important role in the wind turbine. When wind power is used for power generation, the main shaft needs to be braked to stop its rotation in case of an emergency or maintenance. Generally, fans are equipped with 1 to 4 shaft brakes. They work together on one brake disc. The brake brakes by hydraulic pressure or spring force. There are two brake pads on each axle brake. When braking, the brake pad presses the brake disc symmetrically in two stages up and down under the pressure of the piston. The braking force of t...

Claims

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Application Information

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IPC IPC(8): F16D69/02
CPCF16D69/027F16D2069/002F16D2200/0026F16D2200/0052F16D2200/0069F16D2200/0082F16D2250/0038
Inventor 杨鹤清聂鑫磊涂苏波
Owner JIANGXI HUAWU BRAKE
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