I. Causes of Failure and Targeted Prevention
Manufacturing Defects: Choose reputable suppliers to ensure material and machining precision.
Improper Installation:
Torque Control: Use a torque wrench to avoid overtightening or loosening.
Correct Installation of Anti-Loosening Devices: Ensure cotter pins, locking washers, etc., are properly installed.
Mismatched Operating Conditions:
Vibration and Load: Select friction anti-loosening devices (e.g., double nuts) or mechanical anti-loosening devices (e.g., cotter pins + slotted nuts) based on vibration intensity.
Environmental Factors: In corrosive environments, use stainless steel or surface-treated (e.g., galvanized) nuts.
Insufficient Maintenance: Establish a regular inspection system to check anti-loosening markings, cotter pin condition, and torque values.
II. Key Points for Implementing Preventive Measures
Matching Selection: Select the anti-loosening type based on vibration intensity, disassembly requirements, and environment.
Proper Installation: Follow torque specifications and install anti-loosening devices correctly.
Regular Maintenance: Develop an inspection plan, focusing on connections in vibrating environments. Environmental adaptability: In special environments, corrosion-resistant and high-temperature-resistant materials are selected.
