Secondary pendulum chaotic vibration motor

Abstract

The invention discloses a secondary pendulum chaotic vibration motor, relates to a vibration motor with special inertial vibration exciting capability, in particular to a chaotic vibration motor with a secondary pendulum structure, and belongs to the technical field of vibration utilization engineering. The secondary pendulum chaotic vibration motor comprises a motor part and secondary pendulum assemblies; the motor part comprises a stator, a shell, bearing seats, a bearing I, a rotor shaft and a gland; the secondary pendulum assemblies are symmetrically distributed at the left and right ends of the rotor shaft; each secondary pendulum assembly comprises a fixed pendulum, a primary pendulum, a secondary pendulum, a shaft and a bearing; the secondary pendulum assembly is arranged at the shaft end part of the rotor shaft, and the fixed pendulum is fixedly connected on the rotor shaft through a flat key; a shaft sleeve is arranged between the primary pendulum and the secondary pendulum, the primary pendulum is hinged with the rotor shaft through a bearing II, and the lower part of the primary pendulum is provided with a secondary swing shaft; and the secondary pendulum is hinged with the secondary swing shaft through a bearing III. The mass ratio of the fixed pendulum, the primary pendulum and the secondary pendulum is generally 5: 3.5: 1.5. A pendulum assembly cover is arranged on the bearing seats at two ends of the shell respectively.

Description

technical field [0001] The invention relates to a vibration motor with special inertial vibration excitation capability, in particular to a chaotic vibration motor with a two-stage swing structure, which belongs to the technical field of vibration utilization engineering. Background technique [0002] A vibration motor is an excitation device that uses the principle of vibration to drive a vibrating machine to work. Both an ordinary vibration motor and an ordinary motor have a stator and rotor structure, but they are very different in principle, function and other structures. [0003] Ordinary vibration motors are equipped with two sets of eccentric pendulum blocks (referred to as pendulum blocks) at both ends of the rotor shaft, which can adjust the relative angle to form the excitation source, and the excitation force is generated during rotation. The base drives the vibrating mechanical system to vibrate; due to the centrifugal effect of the pendulum, the rotor shaft can ...

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Problems solved by technology

[0004] The pendulum block of ordinary vibration motor is fixed on the rotor shaft. Once the maximum exciting force is set, it will be a constant value during operation. However, when the vibration frequency is close to the natural frequency of the system during startup and shutdown, The amplitude will increase rapidly to generate resonance, which will not only make the system lose stability, but also easily cause damage to the structure of the vibration machine including the vibration motor itself; in addition, in many cases, the vibration machine requires the system to have a wide power spectrum curve and certain motion trajectories. Irregular performance, to complete some special operations, such as the low penetration rate of the vibrating screen machine, the occurrence of stuck sieve and other problems, the non-refinement and easy agglomeration of fine powder in the vibrating mill, etc., the ordinary vibrating motor can solve these problems It is almost impossible to solve

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