SU419241A1 - CONE CRUSHER - Google Patents

Description

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The invention relates to equipment for the mining industry, in particular for the crushing of minerals.

A cone crusher is known, which contains a boot device with a throat, upper and lower cones, adjustment and air rings, elastic elements, an electric motor drive and a safety device made in the form of pneumatic jacks mounted on the outer perimeter of the support ring.

A disadvantage of the known crushers is the susceptibility of their parts to significant dynamic loads, with instantaneous stopping of the crusher due to contact with unbreakable metal objects between its cones.

The aim of the invention is to increase the reliability and durability of cone crushers.

To do this, in the proposed crusher, the pneumatic jacks are made with an drive from the charge of chemical weighing and igniter, and а and the motor shaft is also braked with a drive in the form of a pneumatic cylinder with a charge of a metal detector mounted on the throat boot device.

The drawing shows the proposed crusher with a safety device.

The crusher consists of a boot device with a throat 1, a fixed 2 and a movable 3 cones, an adjusting 4 and supporting 5 bends, elastic elements 6, a drive 7. The safety device of a cone crusher when metal objects hit 8 is a sensor 8 of a high-frequency autogenerator metal detector 9 mounted on the outer side of the neck 1. High-speed levmodomkraty 10 installed on the outer perimeter of the crusher and mounted on the support ring 5.

The pneumatic jacks 10 consist of a cylinder 11, a piston with a rod 12, chemical charge 13 and an electric igniter 14. On the motor shaft there is a shoe brake 15, driven by a pneumatic cylinder 16 with a charge 13 of chemical damage with an electric igniter l4. When hit together with ore. Pieces of metal crusher experiencing overload, and a movable cone through a metal object into the crusher presses on a stationary cone.

The safety device works as follows.

When hit by a metal object

17c Maccoit ore in the neck 1, the signal from the sensor 8 of the high-frequency generator 9 is fed through an amplifier into the executive relay, which simultaneously closes the contact of the electrical target for igniting the chemical charge and disconnects the electric motor supply circuit. Under the action of electric current entering the chemical charge of a chemical substance ignites, and high-pressure gases, acting on the pistons of 12 pneumatic jacks 10, raise the upper part of the crusher by the maximum gap, determined by maximum preload of the elastic elements 6. At the same time, the drive motor turns off the brake 15 under the action of the charge gas 13 of the pneumatic cylinder 16. In the resulting maximum gap between the upper 2 and lower 3 cones of the crusher, the metal is outside object or provalivaets or if its dimensions are larger than the resulting gap, stuck between the lining of the cones. In both of these cases, the crusher is stopped. In the first case, the metal object can then be found on the subsequent path of its movement. In the second, the very same

In this case, a metal object may cause some minor damage to the surfaces of the lining plates, however, it will not be able to jam and sharply stop the crusher.

Subject invention

A cone crusher, containing a loading device with a throat, upper and lower cones, adjusting and support rings, elastic elements, an electric motor drive and a safety device, made in the form of pressure plates mounted on the outer perimeter of the support ring reliability and durability of the crusher, pneumatic jacks are made with a drive from the charge of a chemical substance and an igniter, and on the motor shaft there is a brake also with a drive in the form of a nnemocil indra with charge of a chemical electrically connected to the sensor

metal detector installed on the mouth of the boot device.

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