US1607649A - Gyratory crusher - Google Patents

Description

Nov. 23 1926.

J. M. SHQLg.

GIRATORY C'RUSHER Filed June 20. 1923 2 o/A M W 5 a F Patented Nov. 23, 1926.

UNITED TA 1,607,649 rarest orrics.

JACOB M. SI-IOLL, F MILVTAUKEE, WISCONSIN. AESIGNOR, BY MESNE ASSIGNMENTS, TO ALLIS-CI-IALMERS MANUFACTURING COMPANY, OF MILW'AUKEE, WISCONSIN, A

CORPORATION OF DELAWARE.

GYRATORY CBUSHER.

Application filed June 20, 1923. Serial No. 646,606.

This invention relates to improvements in gyratory crushers.

It is the aim of the present inventionto provide an improved frame construction for crushers of this general type, whereby fracture of the eccentric bearing supporting members or ribs located between such bearingsand the outer shell may be avoided. Fracture of such ribs is sometimes caused byshrinkage stresses alone following the casting operation, and it also may happen that where such ribs are formed in the casting operation and shrinkage stresses of themselves are not suflicien't to cause actual fracture of these ribs, such stresses will remain and predispose the ribs to breakage under the addedpressure of operating conditions. Briefly stated, the invention resides in making each of the ribs now commonly employed for supporting the eccen tric bearing in two parts, one part of each rib being formed on the eccentric bearing and the other on the inner wall of the outer shell, with the two parts of each rib in longitudinal alinement 'and'with their ends adjacent each other, and also in providing a novel form of member for insertion between the adjacent ends of each rib, whereby the stresses imposed thereon in operation of the device will be transmitted to and efficiently supported by the outer shell.

In the accompanying drawings forming a part of this specification, there is shown a gyratory crusher of a well-known type embodying all the features in their preferred form, and this construction will now be described in detail, and the features forming the invention then specifically pointed out in the claims.

In the drawings Figure 1 is a vertical central section of the crusher;

Figure 2 is a horizontal section on the line 22of Fig. 1;

Figure 3 is a section on the line 33 of Fig. 1, showing a portion of one of the bearing supporting ribs or members, and

Figure 41 is a view partly in elevation and vertical section of a portion of one of said members.

Referring now to the drawings, and particularly to Fig. 1, the crusher to which the invention is shown as applied is generally the same as the crusher-s shown in any of Letters Patent Nos. 960,281, May 31, 1910;

1,038,794, September 17, 1912, and 1,145,967, July 13, 1915. In the construction here shown, there are provided separately cast upper and lower outer shell portions A, B, respectively. The upper shell portion A has the usual spider located thereon, in which is suspended crushing shaft C carrying crushing head D, and the crushing shaft is operated in the usual manner by the eccentric F housed in the hub G which forms the eccentric bearing. The shaft C is driven by gear I meshing with gear K mounted on counter shaft L. It will be understood that, while this particular type of crusher is preferred, the present invention may be applied also with advantage to gyratory crushers of other forms.

The hub G for supporting the eccentric bearing F in prior constructions has in many instances been supported by radial ribs formed integrally therewith and with the outer shell. In order to avoid stresses on such ribs caused by shrinkage in the casting operation, which may of themselves cause fracture of one or more of such ribs, or at least produce stresses which will cause breakage when combined with the lateral pressures imposed thereon under operating conditions, these ribs, according to the present invention, are formed in two parts with their ends adjacent, and separate members are provided between the ends of such rib parts. While only three such ribs, 10, 11 and 12, have been shown, and which may be arranged approximately as shown, thatis, with the ribs 10, 11 on the same horizontal plane on a level with ornear the top of the eccentric bearing housin and with the 1 member or rib 12 positioned below the diaphragm M, it will be understood that any desired number and arrangement of such supporting ribs may be employed. The ribs or members 10, 11 and 12 preferably are positioned radially as shown in Fig. 2. According to the preferred construction shown, each of the members 10, 11 and 12 comprises two parts a, 6 formed, respectively, on the inner wall of the lower shell portion B and the outer wall of the eccentric bearing hub G, such portions being so arranged that they will be in alinement and with their ends separated. By thus forming the members, the stresses incident to the casting operation will be avoided, and by filling the gap between the adjacent ends of the two portions of each rib the lateral thrusts on the hub will be transmitted by such members to and efficiently supported by the outer shell B. In order to properly fill the gap between the adjacent ends of the parts 11, b of each of the members 10, 11 and 12, such ends are provided with a groove of arcuate or other cross-sectional form extending vertically from top to bottom there of. In the present case, the grooves 1 are segments of a circle and preferably diminish in size toward the bottom of the ribs so as to form tapered recesses into which tapered pins 2 are arranged to fit snugly throughout their length when driven in, and thus support, the ends of each of the .pore tions a, b when lateral thrusts are imposed thereon, such pins taking the stresses in compression. Preferably, and as shown, the groovesl and taper pins 2 are so proportioned that when the latter are inserted they extend substantially throughout the length of the grooves 1. The pins 2 also may be threaded to receive nuts 4-, to prevent displacement. Preferably, also, a liner plate 5 of suitable width is secured to lugs 6 cast on the inner wall of the shell B and the outer surface of the hub G, such plate protecting the ribs from the crushed ore. This plate also prevents displacement of the ca pered pins should the nuts for any reason drop off or become loosened.

While all of the members 10, 11 and 12 may be formed as above described, it has been found in practice that the member 12 may as well be formed without tapering the grooves 1 making them of uniform depth to receive a straight pin, thus avoiding the diificulty and cost of reaming this rib 12, due to its position, being reinforced by the rib 13 formed by the upper part of the diaphragm M and cast with the shell and bearing, the latter being thus fixed in proper position for insertion of the pins 2 as above described. The straight pin preferably is provided with a head 3 and the tapered pins may be similarly formed, if desired.

It will be understood that the invention is not to be limited to the particular con struction shown, but that various modifications may be made therein while still retaining the invention defined by the claims.

What is claimed is:

l. A crusher frame comprising, a shell men'iber, a bearing member formed integral with and located within said shell member, a rib formed integral with one of said members and extending toward the other, and a separate member closing the gap between the end of said rib and said other member where by lateral thrusts in said bearing member will be transmitted to said shell member.

'2. A frame for gyratory crushers, comprising an outer shell, a fixed bearing located entirely within said shell, two-part members formed respectively on said bearing and said outer shell, and a separate member arranged to close the gap between the adjacent ends of said members, wherebv lateral thrusts on the hearing will be transmitted to and supported by said outer shell.

A frame for gyratory crushers, comprising an outer shell, an eccentric bearing formed within said shell, a two-part member formed respectively on said shell and hearing, said member parts being arranged in alinement and with their ends adjacent, and mean; for filling the gap between the ends of said member parts, whereby lateral thrusts on said eccentric bearing will be transmitted to and supported by the outer shell.

4. A frame for gyratory crushers, comprising an outer shell, an eccentric bearing formed within said shell, a plurality of twopart members formed on said shell and bearing and having end grooves, the parts of each of said members being formed integral respectively with said bearing and said shell and arranged in alinement with their grooved ends separated, and pins in said grooves filling the gaps between said parts whereby lateral thrusts on said eccentric hearing will be transmitted by said member to the outer shell.

5. A frame for gyratory crushers, comprising an outer shell, an eccentric bearing formed within said shell, a plurality of twopart members formed on said shell and hear ing and having tapered end grooves, the parts of each of said members being formed respectively on said bearing and said shell and arranged in alinement with their grooved ends separated, and tapered pins arranged to fit in said grooves, whereby lateral thrusts on said eccentric bearing will be transmitted to and supported by said outer shell.

6. A frame for gyratory crushers, comprising an outer shell, an eccentric bearing within said shell, a plurality of two-part members formed on said shell and bearing and having end grooves, the parts of said members being arranged in alinement and with their ends separated, a separate member between the grooved ends of said member parts, and means for preventing dis placement of said separate member, Whereby lateral thrusts on said eccentric hearing will be transmitted to and supported by said outer shell.

7. A frame for gyratory crushers, comprising an outer shell, a bearing within said shell, twopart members formed respectively on said bearing and said outer shell, and separate members arranged to close the gaps between the adjacent ends of each of said two-part members, a plurality of said twopart members being arranged between the outer shell and said bearing at the upper portions thereof, and at least one of said two-part members being arranged on the opposite counter shaft side of said bearing and below the diaphragm of the crusher.

8. A frame for gyratory Crushers, comprising an outer shell, an eccentric bearing formed integral with and located entirely within said shell, and means between said shell and bearing including a member separate from the shell and bearing for transmitting to said shell lateral thrusts imposed on said bearing.

9. A frame for gyratory crushers, comprising an outer shell, an eccentric bearing formed integral with and extending upwardly into said shell, and means between said shell and bearing including a plurality of members separate from the shell and bearing for transmitting to said shell lateral thrusts imposed on said bearing in different directions.

10. A frame for gyratory crushers, comprising an outer shell, an eccentric bearing formed integral with and! extending upwardly into said shell, and means between said shell and bearing including projections thereon and a member disposed between said projections for transmitting to said shell lateral thrusts imposed on said bearing.

In testimony whereof, I have hereunto set my hand.

JACOB M. SHOLL.

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