JPS61278362A - Inertia conical crusher - Google Patents

Abstract

(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

DETAILED DESCRIPTION OF THE INVENTION [Industrial Field of Application] The present invention relates to an apparatus for crushing materials into powder, and more particularly to an inertial cone crusher for use in ore processing plants in non-ferrous and ferrous metallurgy. This relates to equipment widely used in the ore preparation sector.

[Conventional technology]

The main assembly of an inertial cone crusher, which makes its construction and operation rather complex, is the assembly of the unbalanced leaf drive of this inertial cone. In this regard, simplifying the assembly described above is a trend in the improvement of inertial crushers.

an outer cone, an inner cone mounted concentrically with the outer cone, a spherical support of the inner cone, and a spherical support spindle connected to the drive pulley. a shaft of said inner cone carrying a bearing bushing of one unbalanced mass member;
An inertial cone crusher is known in the art (USSR Inventor's Certificate No. 632388), which comprises an intermediate shaft supported in bearings of the crank and a plate clutch. (see 1978 publication).

By providing the above-mentioned bearings and drive spindle, this crusher requires a large space in height, a large amount of metal for its construction, and has a complicated structure, which limits its industrial application. become something that In addition to this, the elastic support of the housing on the foundation reduces the efficiency of the grinding action (output and grinding fineness).

Furthermore, in this technical field, one housing and
one outer cone fixed within the housing;
an inner cone mounted concentrically with the outer cone on two spherical supports for rotation about its axis and pivoting movement about the axis of the outer cone; a cylindrical bearing bush carrying an unbalanced mass member and mounted on said shaft of the same inner cone and having one spherical end thrust bearing, cooperating with said end thrust bearing. An inertial conical crusher is known which comprises a spherical support of the bushing, which is rigidly connected to the drive shaft of a power motor with a carrier member cooperating with the unbalanced mass member.

(See Soviet inventor's certificate No. 481305, issued in 1975).

In this conventional inertial cone crusher, the drive member of the reservoir of unbalanced mass members is rotatably mounted on a crank and housed in a radial groove of one of the unbalanced mass members. A carrier member with a guide.

This conventional crusher is characterized by a complicated structure of the unbalanced mass member drive and its power reliability, due to the rapid wear of the frictional pairs of carrier member-unbalanced mass member grooves. . For such constructions, it is necessary to bring these members into alignment without accessing the unbalanced mass member groove and the carrier member to check their alignment during their assembly. So,
A significant problem arises in the assembly of this unbalanced mass mechanism. In addition, conventional crushers are mechanically unbalanced and require elastic isolation from the foundation to avoid vibratory loading of the foundation. At the same time, the flexure mechanism with the elastic WI shock absorber reduces the crushing force and thus the production factor of the crusher.

[Problem that the invention seeks to solve]

The present invention provides an inertial cone whose construction is simplified and which eliminates the mechanical unbalance caused by unbalanced mass members, thereby eliminating the need for elastic shock absorbers and ensuring an increase in the productivity of the crusher. Based on the problem of providing an improved construction of a crusher, the above problem is based on the problem of providing an improved construction of a crusher. an inner cone mounted on a shaped support concentrically with the outer cone for rotation about its axis and pivoting movement about the axis of the outer cone; and a shaft of the inner cone; a cylindrical bearing bushing carrying an unbalanced mass member mounted on the shaft of the inner cone and having a spherical end thrust bearing; one on the drive shaft of the power motor having a spherical support of the bushing cooperating with a bearing and rigidly connected to the drive shaft of the power motor, and one bearing member cooperating with the unbalanced mass member; an inertial cone crusher comprising two cranks, the carrier member comprising a weight fixed to the crank and unbalanced with respect to the axis of the drive shaft, the weight being by an inertial cone crusher having a mass and a position such that the moment of interest is approximately equal in value and opposite in direction to the static moment of said unbalanced mass member; It will be resolved.

The surface of the carrier member that engages the unbalanced mass member is preferably provided with a shock absorber.

The carrier member is preferably provided with a contact ring mounted concentrically with the axis of rotation of the unbalanced mass, which ring surrounds the unbalanced mass with a space defined with respect to its outer surface.

One HH on this contact ring to vary the amount of space
A flattening means can be provided.

The inertial cone crusher of the invention is characterized by a simplified construction and high productivity. This high degree of productivity is obtained by mechanically balancing the inner cone mechanism by making the carrier member in the form of a counterweight of the unbalanced mass member. The shock absorption mechanism of this crusher housing is made very simple by almost completely eliminating vibrations in the housing. The reliability of the crusher of the present invention is achieved by eliminating the aforementioned friction pairs and by using shock absorbers on the surfaces interconnecting the drive members.
Improved ◇The manufacturing and assembly of this crusher is also simple.

〔Example〕

The inertial cone crusher shown in FIG.
, an outer cone 2 fixed in this housing 1 by a screw connection, and an outer cone 2 mounted concentrically with this outer cone on a spherical support 4 in this housing 1. It has an inner cone body 3. The inner cone 3 is mounted for rotation about its axis of symmetry and for pivoting movement about the axis of symmetry of the outer cone 2.

The cone 3 has a shaft 5 on which a cylindrical bearing bush 6 carries an unbalanced mass 7.
is provided. The bushing 6 has a spherical end thrust bearing 8 cooperating with a spherical support 9.
is rigidly connected to a drive shaft 10 of a power motor (not shown). Furthermore, the drive shaft 10 has a crank 11 to which a support member 12 is rigidly connected, which support member 12 is provided with a weight that is unbalanced with respect to the axis of the drive shaft 10 , and the drive shaft 10 is When rotated, this carrier element engages the unbalanced mass element 7 with its end face. The mass of the carrier member 12 and its position (unbalanced with respect to the axis of the shaft 10) are chosen such that the values of the respective static moments of the carrier member 12 and the unbalanced mass member 7 are approximately equal to each other.

In this embodiment of the crusher, the unbalanced mass members 7 and the carrier members 12 are each made in the form of a 175° sector so that a section 1 is formed between their vertical end faces.
The existence of two spaces ensures freedom of their radial and angular movement relative to each other. The carrier element 12 is the drive element for the unbalanced mass element 7.

A shock absorber 13 is provided on the vertical end face of the carrier member 12 that engages the unbalanced mass member 7 (FIG. 2), this ofI shock absorber is made of an elastic material such as rubber and is attached to the carrier member 1.
It extends vertically over a portion of the end of 2.

The embodiment of the inertial cone crusher shown in FIGS. 3 and 4 differs from the crusher shown in FIGS. 1 and 2 in that it is mounted concentrically with the axis of rotation of the unbalanced mass member 7 and A space 1 defined on the outer surface of the unbalanced mass member 7
5, one contact ring 14 is provided which encircles the unbalanced mass member 7. this ring 1
4 is a screw n to change the amount of this space 15! One section means 16 is provided.

This crusher operates as follows.

During the rotation of the drive shaft 10, the carrier member 12 pushes against the unbalanced mass member 7 and at the same time generates a centrifugal force which is applied to the housing IK. Unbalanced Jj rotating together with the drive shaft 10! The Ji member 7 also generates a centrifugal force equal to and directed in the opposite direction to the centrifugal force generated by the carrier member 12, which is applied to the inner cone 3, which in turn causes its spherical support 4 to Starts to make a rotating movement on the top. While the reduced gap between cones 2 and 3 is moving along one circumference, the material being processed in the space between these two cones is crushed. The unbalanced mass member 7 is movable radially and circumferentially on the spherical support 9 relative to the drive shaft 10 and the carrier member 12.

The deviation of the inner cone 3 from the narrow line of the housing 1 (as indicated by dotted lines in FIG. with a deviation of the area from the vertical. This results in extra tripping moments acting on the support member 12 and on the crank 11 with the shaft 10, which leads to a reduction in the reliability of the assembly.

The resistance to displacement of the inner cone 3 on the outer cone during the crushing action varies over time so that the center of gravity of the unbalanced mass member 7 precedes the vertical plane of contact between the cones 2 and 3. or be delayed. The provision of a space between the respective working end faces of the unbalanced mass member 7 and the carrier member 12 makes it possible to compensate to a large extent the detrimental effects of said moments. At the same time, the provision of shock absorbers 13 on the end faces of the carrier members 12 ensures the absorption of the highest forces during fluctuations in the position of the interengaging members and the compensation of the deviations of these faces from the vertical plane. brought about. For that purpose,
The length of the shock absorbers 13 is selected to be just a fraction of the height of the end face of the carrier member 12, thereby making them act like a pivoting joint and substantially reducing the value of the dripping moment. let

The respective static moments of the unbalanced mass member 7 and the carrier member 12 are approximately equal to each other.

This means that it is impossible to completely balance the crusher so that the amplitude of the vibrations of the inner cone 3 is not constant and the centrifugal force in the inner cone 3-unbalanced mass member 7 mechanism is not constant. This is explained by the fact that it is possible. For a more complete balance of the grinder, the support elements 12
(its mass and position) are determined so that its static moment is slightly larger than the static moment of the unbalanced g-position member 7, taking into account the average centrifugal force of the inner cone 3. , is selected. But this is the crusher housing 1
This will cause an increase in the dripping moment acting on the It is therefore considered the most reasonable solution that the respective static moments of the carrier member 12 and the unbalanced mass member 7 are approximately equal.

A contact ring 14 mounted concentrically on the carrier member 12 makes it possible to limit the width of the deviation of the inner cone 3 from the vertical. The unbalanced mass member 7 is such that its outer circumferential surface rests against the ring 14, so that any further radial deflection of the inner cone 3 is prevented.

This convenience makes it possible to avoid contact rolling of the inner cone 3 on the outer cone.

This ring 14 is dangerous because in the event of uncontrollable wear of its lining or in the absence of the ring 14, this inner cone 3, together with its shaft 5 or unbalanced member 7, will give tJ9J to the spherical support 4 or the housing 1. Eliminate the possibility of functional blockage occurring.

This contact ring 14 also allows the mill to be adjusted for the required product fineness and output. By using means 16 for adjusting the space 15 between the unbalanced member 7 and the ring 14, materials with different physico-mechanical properties can be produced to the fineness required for the production process. Since it can be sectioned for grinding, the production capacity of the grinder is substantially increased.

Adjustment of the amount of space 15 makes it possible to vary the size of the discharge opening "h#" between cones 2 and 3, respectively.

[Brief explanation of drawings]

FIG. 1 is a sectional view of the inertial cone crusher of the present invention, and FIG. 2 is the line ■-■ in FIG. FIG. 3 is a view similar to FIG. 1 with contact ring and space adjustment means; FIG. 4 is a view similar to FIG. If in Fig. 3 showing the bushing
It is a sectional view along the /-IV line.

Claims (1)

[Claims] 1. A housing (1), an outer cone (2) fixed within the housing (1), and a spherical support (4) mounted concentrically with the outer cone. an inner cone (3) adapted to rotate about its axis and to have a pivoting movement about the axis of said outer cone (2); a shaft (5) of the inner cone (3); and an unbalanced mass member. (7), a cylindrical bearing bush (6) carrying a
provided on the shaft (5) of the inner cone (3) and having an end thrust bearing (8), with which a spherical support (9) of the bush (6) cooperates; The spherical support (9) is rigidly connected to the drive shaft (10) of the power motor, on which the crank (11) cooperates with the unbalanced mass member (7) the carrying member ( 12) in an inertial cone crusher having:
The carrier member (12) comprises a weight fixed to the crank (11) and unbalanced with respect to the axis of the drive shaft (10), the weight having a value of its static moment. Inertial cone crusher, characterized in that it has a mass and a position such that the static moment of the unbalanced mass member (7) is approximately equal and opposite in its direction. 2. a carrier member (1) engaging said unbalanced mass member (7);
2) An inertial cone crusher according to claim 1, characterized in that each face of the inertial cone crusher (13) is provided with a shock absorber (13). 3. The carrier member (12) has the unbalanced mass member (7)
) is mounted concentrically with the axis of rotation of the contact ring (14
), the ring encircling the unbalanced mass with a space (15) delimited with respect to its outer surface. body crusher. 4. Inertial cone crusher according to claim 3, characterized in that the contact ring (14) has adjustment means (16) for varying the amount of space (15).