Punti di manutenzione per gru a portale in inverno

The essence of gantry crane component maintenance in winter:

1. Maintenance of motors and reducers

First of all, always check the temperature of the motor housing and bearing parts, and whether there are any abnormalities in the noise and vibration of the motor. In the case of frequent starts, due to the low rotation speed, reduced ventilation and cooling capacity, and large current, the motor temperature rise will quickly increase, so it should be noted that the motor temperature rise must not exceed the upper limit specified in its instruction manual. Adjust the brake according to the requirements of the motor instruction manual. For daily maintenance of the reducer, please refer to the manufacturer’s instruction manual. And the anchor bolts of the reducer should be checked frequently to ensure that the connection must not be loose.

2. Lubrication of traveling devices

Secondly, good ventilator lubrication should be remembered in crane component maintenance techniques. If used, the vent cap of the reducer should be opened first to ensure good ventilation and reduce internal pressure. Before work, check whether the lubricating oil level of the reducer meets the requirements. If it is lower than the normal oil level, add the same type of lubricating oil in time.

The bearings of each wheel of the traveling mechanism have been filled with sufficient grease (calcium-based grease) during assembly. Daily refueling is not required. Grease can be replenished every two months through the oil filling hole or opening the bearing cover. Disassemble, clean and replace grease once a year. Apply grease to each open gear mesh once a week.

3. Maintenance and maintenance of winch unit

Always observe the oil window of the crane reduction box to check whether the lubricating oil level is within the specified range. When it is lower than the specified oil level, the lubricating oil should be replenished in time. When the crane is not used very frequently and the sealing condition and operating environment are good, the lubricating oil in the reduction gearbox should be replaced every six months. When the operating environment is harsh, it should be replaced every quarter. When it is found that water has entered the gru a portale box or there is always foam on the oil surface and it is determined that the oil has deteriorated, the oil should be changed immediately. When changing the oil, the oil should be replaced strictly according to the oil products specified in the reduction gearbox instruction manual. Do not mix the oil products.

SEVENCRANE has specialized in the lifting industry for more than 30 years and has accumulated a large number of customers around the world. Our products are exported to more than 80 countries around the world. It is worth mentioning that our customers have all given good feedback after using our cranes. This is due to our factory’s strict control of product quality and strict control of each production line.