SU1726014A1 - Conical inertial crusher - Google Patents

Abstract

Use: processing of feed in the feed industry. SUMMARY OF THE INVENTION: The crusher comprises a housing 1 with an outer cone 2 and an internal crusher cone 3, the shaft 4 of which is made with an articulated support 5 and a sleeve 6 carrying unbalance weight 8. The center of the body weight of the unbalanced load is defined depending on the distance from the center of the hinged support of the shaft of the crushing cone to the plane, perpendicular to the shaft axis and passing through the center of the forming surface of the crushing cone, as well as from the diameter of the crushing cone 3 in the middle of the generator surface and angles forming the working surface of the outer cone 2 to the vertical axis of the crusher body and to the axis of inclination angles crushed present yaw cone crusher housing. 2 Il.

Description

The invention relates to fine crushing, primarily feed processing, and can be used in the feed industry.

The purpose of the invention is to increase operational reliability by reducing the radial dynamic loads of the NC support units.

FIG. 1 shows a cone inertial feed crusher, longitudinal section; in fig. 2 is a diagram of the forces acting on the internal crushing cone,

The crusher includes a housing 1, an outer cone 2, an inner crushing cone 3, forming a working chamber with the outer cone.

The crushing cone 3 has a shaft 4 with a pivot bearing 5 and a sleeve 6 on which pulley 7 and unbalance weight 8 are mounted.

The rotational drive of the unbalanced load is driven from the electric motor 9. placed on the base plate of the crusher body 1, via a V-belt transmission 10. To reduce vibration, the crusher body is isolated from the base plate of the system-elastic shock absorbers 11.

During operation of the crusher, the internal crushing cone 3 under the action of centrifugal force resulting from the rotation of the unbalance 8, rolls around the external cone 2, turning at the same time around its axis.

The raw material, moving down the working chamber, is subjected to a complex force of a cyclical nature, as a result of which it is crushed to the required size and removed from the body through a special opening.

Since the surface of the outer contour of the crusher is inclined to the vertical under the angle JM and (Fig. 2), the resultant R interaction of the cones is directed at an angle a to the horizontal plane, this causes the axial E and radial T forces to appear in the hinge support of the grinding cone. The radial load T in the hinge support A from the force R can be significantly reduced by placing the unbalanced load on the shaft so that its centrifugal force balances the torques applied to the crushing cone.

The resultant force R of the interaction of the cones is determined from the equation of the moments of forces applied to the splitting cone relative to the center of the hinge A.

 -y tg (“+ /) cos (“ + /) Рц h cos ft.

where R is the resultant force of the interaction of the cones;

H is the distance from the hinge center

crusher cone shaft supports to the plane.

perpendicular to the axis of the shaft and passing

through the middle of the generator surface

shot cone;

D is the diameter of the grinding cone in the middle of its surface; a - the angle of inclination of the generator

the surface of the outer cone to the vertical axis of the crusher body;

/ 3 - the angle of inclination of the crusher cone axis relative to the vertical axis of the crusher body:

Rc is the centrifugal force of the unbalanced load;

h is the distance from the center of the hinge bearing of the crushing cone shaft to the point of intersection of the shaft axis with the horizontal plane passing through the center of gravity of the unbalanced load.

The radial load T in the hinge support is determined from the equation of torques relative to point O.

D

 -h ("+ /)

 ("+ /)

The magnitude of the radial load T can

be equal to zero only in case of equality

zero expression

 -h (r / + /)

But since the centrifugal force always has a certain value that is not equal to zero, it is possible to determine the value of h. wherein the radial load in the pivot bearing will tend to zero.

  ("+ /)

Reducing the radial load in the crushing cone support reduces the tilting moment acting on the body

crushers, and hence the amplitude of its vibrations. This allows us to conclude that with the use of the invention, the operational reliability of the bearing assemblies of the proposed crusher will increase.

Claims (1)

Invention Formula A cone crusher, preferably for processing feed, comprising a housing with an outer cone, an internal crusher cone, the shaft of which made with a hinge bearing and a bushing that carries unbalance load, differs in that, in order to increase operational reliability by reducing the radial dynamic loads on the support assemblies, the center of gravity of the unbalance load is located above the center of the hinge support at a distance determined by from the ratio h H-Јtg (a + / S), where h is the distance from the center of the hinge bearing of the crushing cone shaft to the point of intersection of the shaft axis with the horizontal plane passing through the center of gravity of the unbalanced load; H is the distance from the center of the hinge bearing of the crusher cone shaft to the plane, 0 perpendicular axis of the shaft and passing through the middle of the generatrix of the crushing cone; D is the diameter of the grinding cone in the middle of its surface; a is the angle of inclination of the generatrix of the working surface of the outer cone to the vertical axis of the crusher body and ft is the angle of inclination of the crusher cone axis relative to the vertical axis of the crusher body.