Major maintenance for scissor lifts is typically performed every 1000 working hours or annually, whichever comes first. For frequently used equipment, it is recommended to prioritize working hours; if used less frequently, a comprehensive overhaul should be performed at least annually to ensure all systems are in good condition.
Why 1000 Hours/Year?
High-Intensity Operation Scenarios: Such as factory assembly lines and construction sites, the equipment operates for long periods daily, leading to faster wear and tear on mechanical and hydraulic systems. A 1000-hour interval is more scientifically sound.
Low-Frequency Use or Storage: Even with infrequent use, hydraulic oil may deteriorate due to oxidation, and metal parts may develop slight corrosion. Therefore, an annual comprehensive inspection is essential.
Core Contents of Major Maintenance Include:
Structural Component Inspection: Inspect or disassemble the scissor arm welds, pins, and rollers to check for fatigue cracks or excessive wear.
Hydraulic System Overhaul: Replace all hydraulic oil and filters, clean the oil tank, and check cylinder seals and pipe aging.
Electrical System Deep Maintenance: Inspect motor insulation performance and brush wear, calibrate control module parameters, and check for potential wiring aging.
Safety Device Verification: Test the responsiveness of limit switches, overload protection, and emergency descent functions; replace key sensors if necessary.
Overall Performance Debugging: Adjust brake clearance and chain tension, calibrate platform level, and ensure smooth, vibration-free lifting.
