Precautions for maintenance of European cranes
What are the precautions for European crane maintenance? Today, the staff of European crane manufacturer will introduce to you
1. Maintenance and repair of the transmission mechanism: check whether the fixing device of the wire rope meets the requirements, and check whether it has corrosion, broken wires, loose strands, broken strands, bending, kinking, abrasion, flattening, etc., if it exceeds the relevant regulations It must be replaced immediately; check whether the hook has defects such as section wear, peeling, cracks, torsion deformation, increased opening degree, and whether the related pin shaft and sleeve are severely worn; check whether the pulley is equipped with an anti-drop rope groove device, pulley Whether the rotation is flexible, whether the pulley rope groove, wheel flange has broken edges, wear, cracks and other conditions.
2. Maintenance and repair of European crane brake device: check whether the mechanism is noisy during operation and whether the heat dissipation is good; check and adjust the gap between the brake shoe and the brake wheel; check whether the brake spring and pull rod are fatigued, deformed or cracked Other defects; check the lubrication of the gearbox, reduction box, external gear, etc. and whether the hydraulic oil leaks; often check whether the oil filter is blocked, and whether the adjustment value of the safety valve changes after use; the friction of the brakes of each mechanism There should be no dirt on the surface. If there is dirt, it must be washed off with gasoline or thinner; check whether the tread and axle of the wheel have fatigue cracks, whether the wear of the wheel tread and axle exceeds the standard, and whether there is track gnawing during operation.
3. Maintenance and repair of metal structure: During use, the main stressed components must be regularly checked for overall or partial fatigue deformation, looseness, instability, severe corrosion, cracks, damage, etc., and try to prevent them during European crane transportation. Component deformation and collision damage; check the connecting bolts or riveting, especially whether the vibration parts are loose or defective; check the structural connections and welds for obvious deformation and cracking.
4. Maintenance and repair of the electrical system: clean the dust and dirt on the electrical equipment in time to ensure the cleanliness of the distribution boxes, control boxes, brushes and contact surfaces of each part; always check all cables and wires for damage If the damaged part is found, it should be bandaged or replaced in time; ensure that the contacts of each safety device travel switch are reliably opened and closed, and the contact craters should be polished in time; check whether the European crane power supply and each mechanism are equipped with short-circuit protection, loss-of-voltage protection, and zero Bit protection, over-current protection and over-speed and loss-of-excitation protection for special European cranes.
5. Maintenance and repair of safety protection devices: check whether the installation of European crane's overload protection device, buffer, torque limiter, limit position limiter, anti-rollover device, wind-proof device and protective device meets the design requirements. These devices Is the operation sensitive and reliable, if it exceeds the specification, can an alarm signal be issued in time, and can the power source running in a dangerous direction be automatically cut off.