JPS5817631Y2 - Unbalance unit of inertial cone crusher - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates generally to a cone crusher for fine and intermediate crushing of various materials, and more particularly to an unbalanced unit (out-of-the-box) of an inertial cone crusher.
balance unit).

The invention can be most advantageously used in the construction industry, mining industry and processing industry.

Prior art inertial cone crushers consist of a crushing bowl housing a crushing head with a crushing chamber defined by a crushing surface.

The crushing head is supported on a spherical support mounted similarly to the crushing bowl on the crusher table.

The drive of the crushing cone comprises an unbalanced oscillator formed as a bearing bushing supported on the axis of the crushing cone, the outer surface of the bushing supporting an unbalanced unit with a weight unbalanced with respect to the bushing axis. It has become.

The centrifugal force exerted by the unbalanced rotary weight is one of the main parameters that determines the reduction rat (io) and capacity of the crusher.

The mutual arrangement of the bearing bush and the plane on which this centrifugal force acts determines the service life of the bearing of the unbalanced unit.

An unbalanced unit of an inertial cone crusher known from the prior art has a crushing bowl and a crushing head housed therein, the crushing head being mounted on a bush connected to a drive. (see Soviet Union Inventor's Certificate No. 4192).
No. 40, classification BO2C2104).

This construction is known to have a weight fixed on a bushing suspended from the crushing head shaft by a foot bar.

In this case, the foot bar serves as a support member, and the bearing bush is driven via a ball spindle.

However, the poor design of the support member complicates the arrangement of its separate parts with respect to each other, and its common center of gravity is placed in a horizontal plane passing through the center of the bearing part of the bushing, which increases the service life. It is necessary for

Moreover, the above-mentioned complicated design makes it difficult to remove the unbalance unit and its crusher, thus requiring effort to replace one weight with various other weights.

For this reason, the prior art units allow the crushing ratio and capacity of the crusher to be adjusted only by changing the revolutions per minute of the unbalanced unit, thereby increasing the output of the crusher t-3 crushing Decreasing the ratio and conversely decreasing the output of the crusher increases the grinding ratio.

An unbalanced unit of an inertial cone crusher known from the prior art has a crushing bowl and a crushing head arranged thereon and rests on a bearing bush connected to a drive. This unit consists of a weight supported on the outer surface of the bushing (see U.S. Pat.
No. 073,446, classification BO2C2104).

In this unit, the ball spindle serves as drive and support member, thus considerably simplifying the construction of the unit.

Nevertheless, an unbalanced unit like the one above
It is not possible to adjust the crusher for the required grinding ratio and capacity without sacrificing the other.

An unbalanced unit of an inertial cone crusher known in the prior art has a crushing bowl and a crushing head housed therein, the head having a shaft mounted on a bushing connected to a drive. The unit consists of a set of fixed and adjustable weights supported on the outer surface of the bushing (see Soviet Union Inventor's Certificate No. 497,049, Classification B).
O2C2104).

In this known construction, the adjustable weight is suspended from the bushing by an attached hinge and is fixed to the outer surface of the bushing.

Changing the revolutions per minute of the bushing causes the adjustable weight to change its position relative to the bushing, thus changing the static moment, which is the product of the shortest distance from the center of gravity to the axis of rotation or bushing axis and the mass of the weight.

This allows rapid passage of the crusher through the resonant frequencies during start and stop of the crusher, thus reducing sway and dynamic loads acting on the foundation.

However, the unbalanced unit does not allow adjustment of the crusher without sacrificing the required grinding ratio and capacity one for the other.

Furthermore, in an operating crusher, changing the distance of the center of gravity of the weight from the bush axis leads to a displacement of the line of action of the centrifugal force along the bush height.

This causes misalignment of the bushing with respect to the axis of the crushing head and shortens its life.

The main object of the present invention is to provide an unbalanced unit for an inertial cone crusher in which one set of fixed weights and one set of adjustable weights are arranged to ensure proper adjustment of capacity and crushing ratio. It is.

For this main purpose, the invention has a crushing track and a crushing head accommodated therein, and a shaft resting on a bushing connected to a drive, the outer surface of the bushing being An unbalanced unit for a crusher comprising a set of fixed sources and a set of adjustable weights supported by the bushing, the adjustable weights being pivotably mounted to the bushing and fixable in the pivoting position. The following will be provided.

The advantage of this unit is that the rotation of the adjustable weight relative to the bushing and fixed source reduces the total static moment of the weight 11 due to the displacement of their common center of gravity to and from the bushing.
7) Become a change.

This therefore results in a change in the centrifugal force developed by the rotating weight and in the amplitude of the crushing head, which allows the crushing ratio and capacity of the crusher to be adjusted.

such that the center of gravity of the adjustable weight and the center of gravity of the fixed source are each equidistant from the plane of symmetry of this pair, and the total static moment of the fixed source is equal to the total static moment of the adjustable weight,
It is convenient to place these weights.

Placing the unbalanced units in parallel avoids displacement of the common center of gravity of the weights beyond the limits of the plane of symmetry of the set of weights, which is due to the misalignment of the bushings with respect to the axis of the crushing head = l(i , contributes to extending the life of the bushing.

The invention will be further described by the following detailed description of preferred embodiments with reference to the accompanying drawings.

Referring to FIG. 1, an unbalanced unit of an inertial cone crusher having a crushing track 1 containing a crushing head 2 having an axis 3 is shown.

A shaft 3 is mounted on a bushing 5 connected to a drive device 4 .

Supported on the outer surface 6 of the bushing 5 are a set of fixed sources 7 (FIG. 2) and a set of adjustable weights 8, which are disposed disproportionately to the axis 9 of the bushing 5. .

The adjustable weight is pivoted to the axis 9 of the bushing 5 and can be fixed at the pivoted position.

The weights I and 8 are supported on the bush by split rings 10 (FIG. 3) with ears 11.

Hole 12 (FIG. 2) in ear 11 receives a tightening bolt 13.

The center of gravity 14 of the adjustable weight 80 and the center of gravity 15 of the fixed source 7 are:
The total static moment of the fixed source I is equal to the total static moment of the adjustable weight 8, each being equidistant from the weight 7 and the 80 sets of symmetry planes 16.

The static moment of each weight is the product of its mass and the shortest distance from its center of gravity to the axis 9 of the bushing 5.

The unbalance unit of the inertial cone crusher according to the present invention operates as follows.

In order to increase the capacity of the crusher or its crushing ratio, the bolts 13 (Fig. 2) of the adjustable weight 8 are loosened and the bushing 5 is moved towards the fixed source 7 by a value corresponding to the change in operating conditions. rotated around an axis.

The rotation angle of the adjustable weight is selected by experience.

At the required position, the weight 8 is fixed by tightening the bolt 13.

At the new position, the common center of gravity of weights I and 8 is the weight 7
and 80 pairs of symmetry planes 16 as described above.

To reduce the capacity or grinding ratio of the crusher, the bolts 13 of the adjustable weight 8 are loosened and rotated in the opposite direction.

The displacement of the weight 8 moves the common center of gravity of the set of weights T and 8 away from or near the axis 9 of the bushing 5.

As a result, the total static moment of the weights 7 and 80 is changed, and the value of the centrifugal force is also changed.

As a result, the swing amplitude of the crushing head 2 also changes,
Reduce crusher capacity and grinding ratio.

The center of gravity 14 of the adjustable weight 8 and the center of gravity 15 of the fixed source 7 are
The adjustable weight 8 is equidistant from the weight 7 and the 80 pairs of symmetry planes 16, respectively, and the total static moment of the fixed source 7 is
Any displacement of the adjustable weight will not result in a displacement of the lines of centrifugal force resting in the plane 16 passing through the middle of the bearing part of the bushing 5, as long as the total static moment is equal to (.

Therefore, no moments are developed that would cause the bushing 5 to become misaligned.

The unbalance unit of the inertial cone crusher according to the invention is designed to ensure proper adjustment of the crusher for optimal operating conditions of capacity and crushing ratio and when the physical and mechanical characteristics of the material to be crushed change. , making it possible to stabilize the operating data of the crusher and to extend the life of the unbalanced unit bearing bush.

The invention is not limited to the embodiments disclosed in the specification.

Various changes in the shape of the bushing and weight are possible, if desired, without departing from the spirit and scope of the present invention.

[Brief explanation of the drawing]

FIG. 1 is a longitudinal sectional view of an inertial cone crusher having an unbalanced unit made according to the present invention, FIG. 2 is a cross-sectional view of the unbalanced unit according to the present invention, and FIG.
FIG. 3 is a perspective view of an unbalance unit with an adjustable weight pivoted to the bushing axis according to the present invention; 5...Bush, 7...Fixed weight, 8...
...Adjustable weight, 9...Bush axis, 14
・・・・・・Center of gravity of adjustable weight, 15 ・・・・・・Weight of fixed weight) 6

Claims (1)

[Scope of utility model registration request] An unbalanced unit of an inertial cone crusher having a crushing track containing a crushing head having a shaft mounted on a bush connected to a drive, the unit comprising: a set of crushing heads supported on the outer surface of said bush; An unbalance unit consisting of a fixed weight and a set of adjustable weights, wherein the adjustable weight 8 is pivotally attached to the bush 5 and can be fixed at the pivoted position.