Detail of QC/T 1020-2023

Introduction of QC/T 1020-2023

Drive shaft assembly for automobiles 1 Scope This standard specifies the terms and definitions, symbols, technical requirements and test methods for the drive shaft assembly for automobiles. This document is applicable to the drive shaft assembly for automobiles. 2 Normative references There are no normative references in this document. 3 Terms and definitions For the purposes of this document, the following terms and definitions apply. 3.1 drive shaft assembly combination of universal joints, intermediate shafts and parts mounted between the differential or end reduction gear and the hub for transmitting torque and speed 3.2 universal joint joint mechanism that transmits torque and speed from one end to the other when the angle between the two axes is constant or changed 3.3 fixing joint universal joint that changes the working angle only 3.4 plunging joint universal joint that can change the working angle and conduct axial plunging motion 3.5 interconnecting shaft shaft that connects the differential or the universal joint on end reduction gear side to the universal joint on hub side 3.6 boot sealing part fixed to the universal joint housing and interconnecting shaft for storing grease and preventing leakage of grease or invasion by foreign objects 3.7 displacement travel of the plunging joint expansion and plunging 3.8 bending angle supplementary angle of the input end axis and the output end axis of the universal joint 4 Symbols For the purposes of this document, the following symbols apply. K: torsional stiffness, in Newton meters per degree [N·m/(°)]; Ta: damage torque, in Newton meters (N·m); TIi: input torque at the i operating point, in Newton meters (N·m); 5 Technical requirements 5.1 Bending angle of fixing joint The bending angle of fixing joint shall meet the technical requirements of the product. 5.2 Displacement and bending angle of plunging joint The displacement and bending angle of plunging joint shall meet the technical requirements of the product. 5.3 Rotational backlash The rotational backlash of drive shaft assembly shall not be greater than 60. 5.4 Axial clearance The axial clearance of fixing joint shall not be greater than 0.6mm. 5.5 Bending torque The bending torque of fixing joint with a boot shall not be greater than 20N·m: the bending torque of fixing joint without a boot shall not be greater than 8N·m. 5.6 Rotational torque The rotational torque of fixing joint with a boot shall not be greater than 10N·m: the rotational torque of fixing joint without a boot shall not be greater than 5N·m. 5.7 Static plunging resistance The static plunging resistance shall meet the technical requirements of the product. 5.8 Generated axial force The generated axial force shall meet the technical requirements of the product.

Contents of QC/T 1020-2023

Contents Foreword 1 Scope 2 Normative references 3 Terms and definitions 4 Symbols 5 Technical requirements 6 Test methods