This standard specifies the types and dimensions of chainless traction rail seats for mining (hereinafter referred to as rail seats). This standard applies to chain-type chainless traction soft seats for coal mining machines traveling on underground working faces in coal mines. MT/T 909-2002 Chainless traction chain rail Part 2: Types and dimensions of chainless traction rail seats MT/T909-2002 Standard download decompression password: www.bzxz.net

[CS 73. 100. 40
Customer Case No.: 10321-—2002
People's Republic of China Coal Industry Standard
MIT/T909—2002
Chainless haulage chain rail
Part 2: type and size of rack support for chainless haulage systemRaek for chainless haulage systemPart 2: type and size of rack support for chainless haulage system2002-04-08 Issued
China Economic and Trade Commission
2002-09-01 Implementation
MT/T:99—2502
This standard specifies the type and size of chainless guide rails, thereby determining the type and size of the front guide parts of the shearer travel mechanism. ... This standard is under the jurisdiction of the Special Equipment Standardization Technical Committee of Coal Mine Baking Industry. The main drafting unit of this standard is Zhang Huijin. The main drafting unit of this standard is Zhangkou Coal Mine Machinery Co., Ltd. This standard is entrusted to the Special Equipment Standardization Technical Committee of Coal Mine Baking Industry to the Branch of Plate Transportation of the People's Republic of China Coal Industry Standard
Chainless traction chain rail
Part 2; Type and size of rack support for chainless haulage system Rack forehaulage system Part 2; Type and size of rack support for rhaialess hanlage spstesa1 Standard
This standard specifies the type and size of chainless traction rail seats for mining (hereinafter referred to as rail seats). This standard is used in coal mines and uses chain-type non-efficient rail seats for traveling. 2 Types and sizes
The type and cross-sectional dimensions of rail seats are shown in Figure 1.
3 The technical requirements for temporary seats are shown in Appendix A (Standard Appendix). Approved by the Economic and Trade Commission on April 8, 2002 MT/T909-2002
Unit:
Implementation on September 1, 2002
A1 Technical requirements
MT/T 9092C02
Record A
(Appendix to the standard)
Technical requirements for track densitywww.bzxz.net
A1.1 The rail stock shall comply with this standard and be manufactured in accordance with the drawings and technical documents approved in the prescribed process. 1.2 The rail seat shall be formed by the chain track and the materials used shall be selected with good anti-falling performance and high comprehensive mechanical properties. A1.3 The rail seat surface should not have defects such as sand adhesion, corrosion, oxide scale, and internal defects. A1.4 The rail seat should not have internal defects such as pores, box holes, cavities, and patterns. A1.5 The rail parts must be treated as necessary. A1.6 The missing parts of the rail seat are allowed to have slight casting defects that do not affect the use. The rail seat castings can be repaired quickly without affecting the use and appearance quality and reducing the mechanical properties. A1.7
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