SU419240A1 - CONE INERTIAL CRUSHER - Google Patents

Description

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A cone inertial crusher is known, comprising a housing, an outer cone, an inner crusher cone, a spherical support of a crusher cone, an imbalance mounted on the tail of the crusher cone and an unbalance drive with a support. In small crushers of similar design, the unbalance drive works quite reliably at low specific pressures. However, in crushers of large industrial dimensions of the same design, increased wear of the unbalance drive bearing may occur due to the large vertical component of the centrifugal unbalance force and oil pressure in the cavity between the end of the cone shaft and the bottom of the unbalance, which leads to a decrease in the service life of the drive.

The aim of the invention is to increase the efficiency of the crusher drive.

To do this, in the proposed crusher, the unbalance support is made in the form of a rod passing inside the shaft of the crushing cone and fixed with its upper end in the upper part of the crushing cone.

FIG. 1 shows the proposed crusher with unbalance; in fig. 2 - imbalance.

The crusher consists of a housing 1 in which an outer cone assembly 2 is attached, a spherical support assembly of a crusher cone 3 on which a crusher cone 4 with a shaft 5 pressed into it rests. On the shaft end there is an unbalance 6, having freedom of rotation relative to the shaft and resting on rod 7 holding debalance on

shank shaft.

The rod is fixed with the upper end in the grinding cone 4. The rod is pulled in by the head 8 up to the stop with a conical surface into the shaft (see Fig. 1). From turning the rod keep the slots in the shaft. Thus, the imbalance has freedom of rotation relative to the rod. But the imbalance can also be attached to the rod 7 (see Fig. 2). In this case, the rod together with the debalance will have freedom of rotation relative to the shaft. The rod is fixed by the upper end in the crushing cone with 4 nuts 9 to the support ring 10. The support ring holds key 11 against rotation of the rod relative to the rod. The unbalance is connected to

unbalance actuator 12 allowing unbalance to have a radial and angular displacement in a vertical plane relative to the crusher axis. FIG. 1 and 2, the unbalance drive is shown, for example, in the form of a ball spindle. The unbalance drive is coupled to the motor 13.

Crusher works as follows. The motor 13 causes the rotation of the drive 12 unbalance, which

rotates unbalance 6. Debalance, deviate from

the vertical axis of the crusher under the action of centrifugal force, causes the crushing cone 4 to perform a fatty motion, as a result of which the material is crushed. When the unbalance deviates from the vertical axis of the crusher, a vertical component of the centrifugal unbalance force arises, which is perceived by the rod 7. In addition, under the pressure of the oil in the bearing cavity of the unbalance, a force acting along the axis of the shaft 5 on the unbalance occurs, which is also perceived core. Since the sterles are fixed by the upper end in the crushing cone 4, therefore, the forces acting on the shaft axis ultimately close in the crushing cone 4 and are not transmitted to the unbalance drive.

Subject invention

A cone inertial crusher comprising a body, an outer cone, an inner crusher cone, a spherical support for a crusher cone, an imbalance mounted on the crusher cone shank, and an unbalance drive with a support that, in order to improve the drive operability, made in the form of a rod passing inside the shaft of the grinding cone and secured with the upper end in the upper part of the grinding cone.

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