a balance block

Abstract

The invention discloses a counterbalance. The counterbalance comprises a counterbalance body which is of a pyramid structure provided with a cavity, wherein the counterbalance body comprises an upper surface, a left side face, a right side face and a rear side face; through holes and limit grooves are formed in the upper surface, and the limit grooves are formed in the four corners of the upper surface. By means of the mode, the counterbalance is simple in structure and convenient to use, the counterbalance can be fastened in a rotor balance groove, then the numerical value of dynamic balance of a rotor can be adjusted effectively, and the problem that the rotor vibrates and is damaged under the high-speed rotation is solved.

Description

technical field [0001] The invention relates to the field of CNC machine tools, in particular to a balance weight. Background technique [0002] In engineering machinery such as forklifts, excavators, loaders, road rollers, rotary drilling piling machines, cranes, machine tool bases, large-scale mechanical equipment bed, bases, oil fields, elevators and other construction machinery, the weight of the balance block is required to ensure stable operation and safe use. performance. [0003] Due to various reasons, such as weight differences of various parts, uneven materials, casting defects such as sand inclusions and looseness in castings, the weight of the rotor is unbalanced, and the eccentric moment will be generated when the rotor is running. Vibration, noise, and damage to bearings and other parts are generated; therefore, for high-speed rotors, it is especially necessary to do a dynamic balance test to detect that the force balance and torque balance of each part of th...

AI Technical Summary

Problems solved by technology

[0004] The current motor rotor dynamic balance block is a metal block with a bolt hole in the middle. Its disadvantages are: first, the dynamic balance block needs to be pushed in forcefully when it is installed in the balance groove, but due to the difference in processing accuracy, some processing errors are large. It is difficult to install the dynamic balance weight into the balance tank; secondly, after installation, the contact area between the balance weight and the inner wall of the balance tank is small, and the dynamic balance weight is affected by ultra-high temperature after long-term operation of the rotor, and it is easy to be damaged under thermal expansion and contraction, which eventually leads to The balance weight is loose or falls off

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