What are the daily maintenance procedures for bridge cranes?

Key points for daily maintenance of bridge cranes:

I. Pre-shift/Daily Inspection (must be done before each use)
* Power and Electrical Components
* Check the sliding contact line and cables for damage, loosening, or signs of sparking.
* Check the control cabinet, buttons, and emergency stop switch for sensitivity and reliability.
* Check the indicator lights, limit switches, horn, and lighting for proper function.
* Metal Structure
* Check the main beam, end beams, and trolley frame for obvious deformation, cracks, or weld defects.
* Check the bolts, pins, and stops for looseness or missing parts.
* Check the rails for foreign objects and loose pressure plates.
* Hoisting Mechanism (Core)
* Check the wire rope for broken strands, loose strands, flattening, or corrosion. 1. Severe Wear: Check for cracks, deformation, or excessive opening in the hook; ensure the safety catch is intact. 2. Wear, rope jamming, or uneven wear on the drum and pulley grooves.
3. Running Mechanism: Check for rail wear, abnormal noise, or vibration on the trolley and crane wheels.
4. Brakes: Check for oil stains or excessive wear on the brake wheels and brake pads.
5. Gearbox: Check for abnormal noise, oil leaks, or abnormal temperature.
6. Safety Devices: Check the effectiveness of the lift limit switch, travel limit switch, and overload limiter.
7. Check the integrity of the buffer and stop devices.
8. Check the windproof rail clamps and anchoring devices (for outdoor cranes). Reliability?

II. Daily Lubrication and Maintenance
Add grease to wheel bearings, pulley shafts, couplings, pins, gear couplings, etc., as required.
Check the oil level in the reducer; replace it promptly if the oil is black, emulsified, or contains many impurities.
Regularly lubricate the brake pins and electromagnet push rods to ensure smooth operation.

III. In-Operation Monitoring
Check for abnormal noises, vibrations, odors, and overheating during lifting and traveling.
Check for smooth braking, without hook slippage, slippage, or one-sided braking.
Strictly prohibit oblique pulling and lifting, overloading, and standing under the load.
Identify any abnormalities. Immediately stop the machine; operation with defects is prohibited.

IV. Post-shift Maintenance
Raise the hook to a safe height and stop the trolley in the designated position.
Disconnect the main power supply and clean debris and dust from the rails.
For outdoor cranes, tighten the rail clamps and take windproof measures.
Fill out the inspection record; report any abnormalities to maintenance immediately.
V. Prohibited Actions
Overloading, tilting or lifting at an angle, and rapid reverse rotation are prohibited.
Using limit switches as parking switches is prohibited.
Operating with faulty brakes or brake pads contaminated with oil is prohibited.
Continuing to use wire ropes that are severely worn or have excessive broken wires is prohibited.