MT 326-1993 U-shaped steel retractable roadway bracket clamp
1 Subject content and application scope
This standard specifies the terms, classification, technical requirements, test methods, inspection rules, as well as marking, packaging and storage of U-shaped steel retractable roadway bracket clamp (hereinafter referred to as "clamp").
It is applicable to all kinds of clamp used for U-shaped steel retractable roadway bracket
2 Terms
2.1 U-shaped steel retractable roadway bracket
roadway bracket realizing the section shrinkage by the relative sliding of two sections of U-shaped steel in the U-shaped steel overlapped section under the action of external force For example: trapezoidal U-shaped steel retractable bracket, arched U-shaped steel retractable bracket, etc.
2.2 clamp
connecting and locking device for two sections of U-shaped steel in the U-shaped steel retractable roadway bracket
2.3 test piece
linear test component with two sections of U-shaped steel overlapped together, connected and locked with clamp to realize relative slip under the axial pressure generated by pressure machine
2.4 joint resistance
friction force that must be overcome when pushing two sections of U-shaped steel to generate relative sliding
2.5 maximum working resistance
maximum joint resistance of the test piece when the clamp is under a certain nut torque or knocking force
1 Subject content and application scope
2 Terms
4 Technical requirements
5 Test methods
6 Inspection rules
7 Marking, packaging and storage of products
Additional explanation
