Screw jacks, also known as screw jacks, are widely used in machinery. Construction, chemical, medical and other health various industries. It can accurately control and adjust the height of lifting or advancing according to a certain program, and can be directly driven by electric motor or other power, or manually. The internal structure is worm gear + screw nut, using electric drive to realize the lifting function. The following is an introduction to the problems and solutions in the use of over the screw jacks, to help users and friends quickly out of trouble.
Worm gears wear quickly, and worm gears are generally made of tin bronze. Screw jacks wear very slowly in normal operation, some screw jacks can be used for more than 10 years. If the wear rate is too fast, we have to consider whether the initial selection is correct, whether overload operation, worm gear worm material, assembly quality and use of the environment and other reasons. Worm gear bearing damage, failure occurs, even if the gearbox is well sealed, still often found in the screw jack gear oil is emulsified, bearing rust, corrosion, damage. This is because the screw jacks run for a period of time, the gear oil temperature rises and cools the condensate produced after mixing with the oil. Of course, it is also closely related to the bearing quality and assembly process.
Can buy or make some special tools, disassembly and installation of screw jack parts, try to avoid using hammers and other tools to knock, replacement of gears, worm gears, try to use the original parts and pairs of replacement, assembly of the output shaft, pay attention to the tolerance with the use of anti-sticking agent or reddish oil to protect the hollow shaft, to prevent the wear and tear of the rust or with the surface area of the scale, the maintenance of the difficult to dismantle.