SU1226722A1 - Vibration exciter - Google Patents

Description

The invention relates to a vibration technique, namely, debapans and bacterial stimuli, and can be used in various sectors of a national household.

The aim of the invention is to increase the durability of the bearings of the vibration exciter by reducing the bending moment acting on them, as well as providing adjustment of the disturbing forces.

Figure 1 shows the proposed exciter, a longitudinal section j in figure 2 - section aa in figure 1; on fig.Z - section bb in figure 1.

In the housing 1 of the vibration exciter, an axle 2 of ferromagnetic material is fixedly fixed to the floor, at the ends of which, through the bearings 3, the unbalances 4 are installed. flanges 7. On unbalances 4 by means of flanges 7 and covers 8 are fixed symmetrically with respect to each bearing 3 permanent magnets 9, the center of mass of each of which is located in the plane of symmetry of the corresponding debala NSA and is shifted towards the center of mass of the unbalance, and the poles are facing the hollow axis 2.

Bibroseater works as follows.

LA

Between the hollow axis 2 of ferromagnetic material and the permanent magnets 9, an attractive force RDD arises, acting on the hollow axis 2 and through

unbalances 4 on the bearings 3. When the drive shaft 5 rotates with unbalances 4, the resulting centering forces Rc act on the bearings 3, are balanced by the forces of attraction magnetrpQB rl the bearings 3 become tT

laden with radial forces, the unbalanced forces of attraction of the magnets RDD acting on the hollow axis 2 are transmitted to the housing 1.

If it is necessary to change the disturbing force of the vibration exciter, the unbalances 4 are reversed relative to each other by disconnecting the flanges 7 from the unbalances 4, axial movement of the flanges 7, their subsequent rotation around the axis of the drive shaft 5 and connecting with the balances 4 with locking screws 6.

In the manufacture of unbalances 4 from a ferromagnetic material, and the flanges 7 and covers 8 from a non-ferromagnetic material, the force of attraction acting on the hollow axis 2 increases and

 ,

unbalance 4 ..

The symmetrical arrangement of the magnets with respect to each bearing eliminates the possibility of bending moments acting on the bearings when the unbalances are rotated and increases those. most of their durability.

Bb

FIG 2

vniipi

Order 1909 / -2 Edition 438

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Random polygons pr-tie, Uzhgorod, st. Project, 4

Fig.Z

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Claims (2)

1. VIBRATIVE exciter, comprising a housing, a drive shaft located in it in bearings, unbalances mounted on it and a bearing unloading unit, characterized in that, in order to increase durability by reducing the effect of bending moment on the bearings, it is equipped with a housing fixed and coaxially located to the drive shaft with a hollow axis of ferromagnetic material and flanges mounted at its ends through bearings, connected to the drive shaft and fixed to unbalances, the bearing unloading unit Full as embodied symmetrically relative to the unbalance · each bearing permanent magnets facing the hollow spindle poles, and the center of mass of each magnet is located in the plane of symmetry of the respective unbalance and is displaced in the direction of its center of mass. 2. The vibration exciter according to claim 1, characterized in that, in order to ensure adjustment of the disturbing forces, the flanges on the drive shaft are mounted with the possibility of axial movement and fixation. Fig!