RU171292U1 - TWO-CHAMBER JAW CRUSHER - Google Patents

Abstract

The utility model relates to the field of mineral processing and can be used in mining, metallurgical, construction and other industries. The objective of the utility model is to reduce vibration loads on the bed by reducing the amplitude of the forced vibrations. This is achieved by the fact that the two-chamber jaw crusher consists of from a bed 1, two fixed cheeks 2, a movable cheek 3, driven by a crank mechanism 7, 8. In the proposed solution, one movable cheek 3 is provided with a counterweight 4 and is disposed between the fixed cheeks on the axis 6 so that its center of gravity coincides with the center of rotation.

Description

The utility model relates to the field of mineral processing and can be used in mining and processing, metallurgical, construction and other industries.

Known jaw crusher continuous with a simple swinging of the cheek (US Pat. RF invention No. 2246351, B02C 1/02), consisting of two pairs of fixed and movable cheeks located in the upper and lower tiers. The movable cheeks are suspended on the axles and articulated by means of spacer plates with a bed and connecting rods, driven by an eccentric shaft, and by means of a traction - with a spring providing idling.

The disadvantages of this design are large dimensions, unreliable idling, the use of a return spring.

Known two-chamber jaw crusher (US Pat. CN for utility model No. 203508075 U, B02C 1/02), consisting of two fixed and rigidly mounted on the frame of the cheeks, two pivotally connected to it movable cheeks, driven by a crank mechanism.

The disadvantages of this design are the presence of unbalanced oscillations of the system and two movable cheeks, which increases the intensity and dimensions of the machine.

The closest analogue is a two-chamber continuous jaw crusher (US Pat. Of the invention for invention No. 2246350, B02C 1/02), consisting of two fixed and two movable cheeks having upper and lower parts connected by spacer plates with a slide reciprocating along vertical mounted in guide rollers. The upper part of the movable cheek rests on the bottom, and the lower part of the movable cheek rests on the base, using a roller cage.

The disadvantages of this crusher are its complexity, increased metal consumption, the presence of significant forced vibrations, wear of the support and guide rollers.

The objective of the utility model is to reduce vibration loads on the bed by reducing the amplitude of the forced vibrations.

This is achieved by the fact that the two-chamber jaw crusher consists of a bed, two fixed cheeks, a movable cheek, driven by a crank mechanism. In the proposed solution, one movable cheek is equipped with a counterweight and is located between the fixed cheeks on the axis so that its center of gravity coincides with the center of its rotation.

The essence of the utility model is illustrated by graphic material, where in FIG. 1 shows a two-chamber jaw crusher.

The two-chamber jaw crusher (Fig. 1) consists of a bed 1 and two fixed cheeks 2, between which there is a movable cheek 3 with a counterweight 4. A movable cheek 3 mounted on two hinged-fixed supports 5, mounted on the frame 1 so that the axis of rotation 6 movable cheeks 3 passes through the center of gravity. In the upper part, the movable cheek 3 is connected to a connecting rod 7, which is articulated with a crank 8, rotated by an electric motor 9 by means of a gearbox 10 and V-belt drive 11. The fixed cheeks 2 are equipped with safety-adjusting devices 12. Two crushing chambers 13 are formed between the fixed and movable cheeks 13.

During operation of a two-chamber jaw crusher, the material to be ground, for example ferruginous quartzites, is fed into one of the crushing chambers 13, for example, the left one. The movable cheek 3, rigidly mounted on the frame 1 using a pivotally fixed support 5, under the action of a connecting rod 7, articulated with a crank 8, rotated by an electric motor 9 by means of a gearbox 10 and a V-belt transmission 11, swings from one fixed cheek 2 to another and back . During the reverse stroke of the movable cheek 3, the crushed material is fed into another crushing chamber 13, the right one, and the crushed material from the left crushing chamber 13 is unloaded by gravity into the space under the chamber. When the crushed material is continuously fed into both chambers of the crusher 13, crushing of the material will occur continuously, and the electric motor 9 will constantly work under the calculated (maximum) load. The presence of a counterweight 4 on the movable cheek 3 and the installation of its axis of rotation 6, taking into account the center of gravity of the movable cheek, reduces the amplitude of the forced vibrations of the jaw crusher, which leads to a reduction in vibration loads on the bed and the base of the structure.

The adjustment of the size of the crushed material can be carried out by changing the position of the fixed cheeks 2 using safety-adjusting devices 12.

The proposed utility model makes it possible to eliminate the idle running of the cheek, increase the productivity of the crusher, reduce its metal consumption, reduce the specific energy consumption for crushing, reduce the wear of the supports of the movable cheek, and make it possible to control the coarseness of the crushed material over a wide range.

Claims (1)

A two-chamber jaw crusher, consisting of a bed, two fixed cheeks, a movable cheek driven by a crank mechanism, characterized in that one movable cheek is equipped with a counterweight and is located between the fixed cheeks on the axis so that its center of gravity coincides with its center of rotation .

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