SU385617A1 - Jaw vibrator crusher - Google Patents

Description

one

According to the main author. St. No. 362635 is known for the jaw vibration crusher, which includes a support frame, movable cheeks elastically connected with it, an electromagnetic drive made in the form of koreas attached to each of the base cheeks interacting with stators having electromagnetic windings.

In order to ensure a change in the frequency and amplitude of movement of the movable cheeks in the proposed crusher, each measles is made with windings electrically connected with a network frequency converter on thyristors.

FIG. 1 shows the scheme of the proposed jaw crusher with one movable cheek; in fig. 2 is a section along the AL in FIG. one; in fig. 3 is a diagram of a jaw crusher with two moving cheeks; pas figs. 4 is a view along arrow B in FIG. 3

The jaw vibrating crusher 1 is acidified and includes electromagnets 1, direct current windings 2, diode rectifier 3, electromagnets core 4, non-ferromagnetic gasket 5, winding 6, joint 7 (guide), fixed cheek 8, movable cheeks 9, resilient system 10, thyristor 11, thyristor control device 12, controlled rectifier 13, housing 14, master oscillator 15, diode 16.

A constant voltage to the thyristor // is supplied from the controlled rectifier 13, the DC windings are fed from the rectifier on the diodes 3 and a constant magnetic flux F. is created in the magnetic circuit of the electromagnet.

The master oscillator 15 through the control device 12 delivers pulses of a given frequency (depending on the technological requirements of the crushing process of the material entering the jaw of the jaw crusher) to the thyristor 11, the output of which pulsating voltage is removed to the windings 6, resulting in movement the cheeks around the hinge (or along the guide device 7 rigidly connected with the body M of the jaw crusher).

The elastic system 10, the hinge 7 (the guiding device) makes a kinematic connection between the movable cheek 9, the core 4 (made of ferromagnetic material) and the body 14.

Gaskets 5 of a non-ferromagnetic material serve to direct the magnetic flux F. Diode 16 serves to conduct a current in one direction.

The movement of the core 4 is caused by

electromagnetic force arising from

the interaction of its flow through the windings 6

pulsating current with a magnetic flux f,

created by the DC windings in the electromagnet.

With a pulsating current flowing around the windings 6, the electromagnetic motor operates according to a single-stroke scheme: the return stroke of the core 4 (and the movable cheek 5) is carried out by the elastic system 10. At this, the ampl and the movement distance of the core 4 (at a given frequency) is determined by the time between unlocking and locking the thyristor}} and the supply voltage to the windings 6 of the excitation from the controlled rectifier; m, it is 13.

Dynamic equilibrium required, for example, when using jaw

crushers in the front crushing plants of the mechanical system of the jaw crusher is achieved by stretch movements of the movable cheeks 9.

Subject invention

Shchekov vibration crusher according to ed. St. No. 362635, characterized in that, in order to ensure a change in the frequency and amplitude of movement of the movable cheeks, each measles is made with excitation windings electrically connected to a network frequency converter on the thyristors.

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