A disc hydraulic brake of a wind turbine and its processing method

Abstract

The invention provides a disk type hydraulic brake of a wind turbine generator set and a processing method thereof. The disk type hydraulic brake comprises a brake caliper, wherein an oil inlet and an oil feeding channel are formed in and arranged on a brake caliper housing; the brake caliper further comprises a cylinder body which is independent from the housing; a groove provided with inner threads is formed in a position, corresponding to a piston, on the housing; the groove communicates with the oil feeding channel; the cylinder body is provided with outer threads which are in match with the inner threads of the groove; the cylinder body is mounted on the housing through thread fitting with the groove; the piston is positioned in the cylinder body and is matched with the cylinder body; a sealing part is arranged between the piston and the cylinder body. According to the disk type hydraulic brake, an independent piston cylinder body is mounted on the brake caliper housing and can be independent from the brake caliper housing to processed; the cylinder body is a main part in match with the piston and can be individually processed through a high-precision lathe, thus the processing precision and finish of the cylinder body can be improved, and as a result, the sealing performance of the brake can be improved; in addition, the cylinder body is independently arranged, so that the convenience of repair and maintenance is ensured, and the production efficiency can be improved.

Description

technical field [0001] The invention relates to a structural improvement of a disc hydraulic brake of a wind power generating set and an improvement of a corresponding processing method. Background technique [0002] At present, disc hydraulic brakes are widely used in large wind turbines. In the prior art, the structure of the wind turbine disc hydraulic brake is as follows: figure 1 As shown, it includes two symmetrically arranged brake calipers 10, and each brake caliper 10 includes a housing 11, a piston 12, a friction plate (or brake pad) 13, a sealing guide belt 14, a pressure sealing ring 15 and a dustproof Sealing ring 16. The casing 11 is grooved to form a cylinder portion 113, the piston 12 is fitted in the cylinder portion 111, the cylinder portion 111 communicates with the oil inlet 111 through the oil inlet passage 112 on the casing 11, and the cylinder portion 113 is It is integrally processed and formed with the housing 11. [0003] Due to the large size o...

AI Technical Summary

Problems solved by technology

[0003] Due to the large size of the brake caliper of the disc hydraulic brake of the wind power generating set, the piston cylinder and the housing are usually integrally formed by a large lathe. Processing with a horizontal lathe requires special tooling and fixtures, and needs to find a balance, and the linear speed cannot be increased during processing; 2. Each brake caliper generally has 2-3 cylinder parts, which are processed integrally with a horizontal lathe , Every time a cylinder is processed, it needs to be re-clamped. Multiple positioning will bring about accumulative errors in clamping, which will lead to low precision and poor surface finish of the processed cylinder, which will easily cause seal failure and oil leakage. Affecting the brake failure of the wind turbine, which has a major impact on the wind turbine; 3. This integrated processing method is inefficient and high in cost; 4. When repairing and maintaining the brake cylinder, it is necessary to remove the housing as a whole and operate very inconvenient

Images