TYW Foot Operated Hydraulic Drum Brake

Range
This standard specifies the technical contents such as terms and definitions, technical requirements, test methods and inspection rules of electro-hydraulic drum brakes (hereinafter referred to as brakes).
This standard is applicable to drum brakes driven by electro-hydraulic thrusters (hereinafter referred to as thrusters).

2 normative reference documents
The following documents are essential for the application of this document. For dated reference documents, only dated version is applicable to this document. For undated reference documents, the latest version (including all amendments) is applicable to this document. GB 755 Quota and Performance of Rotating Electrical Machines
Technical requirements for cold-rolled cylindrical helical springs Part 2: Compression springs
Nodular iron castings

Technical requirements for hot-rolled cylindrical helical springs
Design and calculation of cylindrical spiral spring
GB/T 6461 rating of samples and specimens after corrosion test of metal and other inorganic coatings on metal substrates
GB/T 8923.1 visual evaluation of surface cleanliness of steel surface treatment before coating-part 1: corrosion grade and treatment grade of uncoated steel surface and steel surface after completely removing original coating.

Corrosion grade and treatment grade of the surface of the material and the surface of the steel after the original coating is completely removed.
GB/T 9286
GB/T 9439
Paints and varnishes-scratch test of paint films
Gray cast iron castings
GB/T 10125 artificial atmosphere corrosion test salt spray test
Friction plates for industrial and agricultural machinery
Classification of corrosivity of atmospheric environment
Paints and varnishes-Determination of film thickness
GB/T 26665 brake terminology
JB/T 5939 General specification for steel castings of construction machinery

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