Slewing support is a new type of mechanical parts developed gradually in recent 40 years, which has been widely used all over the world. Slewing support is mainly composed of inner and outer rings and rolling bodies. At present, the slewing bearings produced in our country are advanced in technology and of high quality, but the maintenance of slewing bearings in peacetime, especially the slewing bearings in tower cranes, should be paid attention to. How to maintain the slewing bearing in the tower crane? Here is a detailed introduction for you.
Slewing bearings in the installation of bearings should pay special attention to, the bearings must have enough rigidity, and the surface should be kept flat. When assembling slewing support, stress treatment should be carried out, so as to reduce the deformation of slewing support, and pay attention to cleaning the contact surface. When using, we should also pay attention to the change of noise and rotary resistance moment. If there are problems, we should check them in time.
Slewing bearing can not be lifted or stored vertically. It must be operated horizontally to avoid deformation of slewing bearing. When installing the slewing support, the bolts should be tightened and the meshing of the checked gears should be checked, because the meshing should conform to the installation accuracy of the gears. In order to ensure the normal operation of the bolt, it is necessary to avoid the insufficient pre-tightening force of the bolt, and check the pre-tightening torque of the bolt in time after the slewing support works for 100 or 500 hours.
When tightening nuts, it is necessary to add lubricating oil, and use torque wrench to tighten the nuts symmetrically and evenly in the circumferential direction for many times. If the revolving bearing is idling loudly, it may be that the golden teeth in the tower crane are broken, so it should be repaired in time.