L48A1 Mast Section it is necessary to run an empty car and check the following five points to prevent the problem
1, the walking part and the connection parts of the tower body are solid-because the tower part of the tower is made up of a section of members(individual walking parts consisting of tracks and rollers), The reliability of the connecting parts is closely related to the overall safety factor. Once the connecting parts, parts become loose due to corrosion, aging, and strain。
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2, whether the amount of lubricating oil in the transmission part is sufficient, whether the sound is normal-the role of lubricating oil in the tower crane is mainly to protect the parts, reduce the friction coefficient, absorb friction and heat generation, etc., but in the long-term use, there is often a large amount of consumption.
Therefore, when the empty car before each tower crane is used, the steering gear and the crane are turned on and the contact surface is determined by monitoring the friction sound of the relevant mechanism to determine whether there is sufficient lubricant.
Generally speaking, the sound of friction and smooth, gentle, no discomfort, worry means that the amount of lube oil is sufficient, while the sound is sharp, high, harsh is to tell people that lube oil is insufficient, need to pay attention. It is worth mentioning that in the extreme lack of lubricants, the tower crane parts will also appear sparks or even black smoke due to friction and heat.
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