According to the situation you described, the elevator produces friction sounds and shaking during operation, which may involve issues with multiple systems. The following are possible reasons and corresponding treatment suggestions based on reference materials:
Possible cause analysis
1. Issues with the guide rail system
a. Non verticality or wear of guide rail: Deviation in the verticality of the guide rail can cause uneven stress on the contact surface between the guide shoe and the guide rail, resulting in friction sound and car shaking
For example, for every 1 millimeter increase in the vertical deviation of the guide rail, the car shaking may increase threefold
b. Excessive clearance between guide rail joints or dirt on the guide rail surface: Excessive clearance between guide rail joints (standard should be ≤ 0.5mm) or dirt on the guide rail may cause abnormal noise and shaking
2. Guide shoe component malfunction
a. Wear or excessive clearance of guide shoe liner: When the remaining thickness of the guide shoe liner is less than 1mm or the dynamic clearance exceeds 3mm, it is necessary to replace or adjust the spring preload force
b. Dry friction between guide shoe and guide rail: If a sharp “hissing” sound is heard, it may be due to a lack of oil in the guide rail or severe wear of the guide shoe
3. Abnormal suspension system
a. Uneven tension of steel wire rope: When the force difference between each steel wire rope exceeds 5%, a tension meter is needed to detect and adjust it
b. Traction wheel rope groove wear: When the wear of the rope groove bottom diameter exceeds 10% of the nominal diameter, the traction wheel must be replaced
4. Loose or damaged mechanical components
a. Loose fixing of car components: If the bolts of the gantry crane beam and car frame are not tightened to the standard torque (usually 28-32N · m), it may cause shaking
b. Door wheel or bearing damage: When opening or closing the door, there is a “clunking” sound accompanied by door jumping, which may be due to damage to the door wheel bearing or welding of the door wheel axle
5. Electrical system issues
a. Poor contact of brake circuit: When the brake cannot be fully opened, it may cause startup shaking
b. Traction torque fluctuation: Poor torque adjustment during start-up (too small or too large) can cause the car to shake
–Suggested solution:
a. Stop immediately and report for repair: If the abnormal noise is a “clanging” impact sound or accompanied by obvious shaking, it may involve key components such as safety clamps and buffers, and should be stopped immediately and professional personnel should be contacted for maintenance
b. Regular maintenance and inspection: Focus on checking the verticality of the guide rail, the thickness of the guide shoe liner, the tension of the steel wire rope, and the wear of the traction wheel to ensure proper lubrication
c. Avoid self handling: Elevator malfunctions must be operated by certified personnel, and do not adjust or disassemble components without authorization
Summary: The friction sound and shaking of elevators are often caused by faults in guide rails, guide shoes, suspension systems, or mechanical components, and need to be judged based on specific sound and shaking characteristics. Safety first, it is recommended to promptly contact professional maintenance personnel for investigation
