Yaw brake block and preparation method thereof

A technology of brake pads and yaw, which is applied in the field of yaw brake pads and its preparation, can solve the problems of dual aggressiveness, easy-to-rust linings, windmill accidents, etc., and achieve excellent flexibility and flexure, high resistance Compression and shear strength, reducing aggressiveness
CN101769353AActive Publication Date: 2010-07-07HENGSHUI ZHONGCHENG FRICTION MATERIAL
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Patent Information

Authority / Receiving Office
CN Β· China
Patent Type
Applications(China)
Current Assignee / Owner
HENGSHUI ZHONGCHENG FRICTION MATERIAL
Publication Date
2010-07-07

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Abstract

The invention belongs to the technical field of friction material used for mechanical brake and particularly discloses a yaw brake block, which adopts the main technical scheme that the yaw brake block consists of binder, reinforcing material, friction performance modifier and lubricating anti-friction material; and the yaw brake block is prepared through procedures of proportioning, mixing, rolling, heat treatment and grinding. As the friction performance modifier of the yaw brake block adopts precipitated barium sulfate, cashew nut shell oil, potassium titanate spar and barite and does not contain any metal component, thereby leading the rigidity of the prepared yaw brake block to be greatly reduced; as the binder is formed by mixing NBR modified phenolic resin and polyvinyl butyral, thereby leading the yaw brake block to have higher compressive strength and shearing strength compared with the yaw brake block prepared by only using phenolic resin as the binder.
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Description

technical field

[0001] The invention belongs to the technical field of friction materials for mechanical braking, and in particular relates to a yaw brake pad used on a wind power generator and a preparation method thereof. Background technique

[0002] Yaw brake pads are the main accessories used in wind turbines to control their rotation direction and speed. Traditional yaw brake pads are metal powder sintered type. For example, Chinese patent application number 200810068968.2 and publication number CN101413559A disclose a yaw brake pad. The main materials constituting the brake pad include as It consists of iron powder, copper powder as filler, quartz sand and silicon carbide as reinforcement material, and tin powder as binder. This yaw brake pad product has the following defects: one, since the fillers constituting the yaw brake pad are 50-75% iron powder and 5-18% copper powder, its specific gravity and thermal conductivity are significantly increased, and the use of ...

Claims

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