US2155393A - Crusher frame - Google Patents

Description

April 1939- w. A. BATTEY CRUSHER FRAME Filed June 16, 1933 5 Sheets-Sheet 1 1 "13127202: William A. Battey Atty;

April 25, 1939. A BATTEY 2,155,393

CRUSHER FRAME Filed June 16, 1933 3 Sheets-Sheet 2 nrvmr-zom William A.

W. A. BATTEY CRUSHER FRAME April 25, 1939' 3 Sheets-Sheet 3 Filed June 16, 1933 I l II I II I I I IEIf/IIII'LCR William I Battey Atty.

Patented Apr. 25, 1939 UNITED STATES ATENT OFFICE (JR-USHER FRAME New York Application June 16, 1933, Serial No. 676,138

1 Claim.

My invention relates to the construction of crushing machinery employed for the purpose of reducing mineral bodies such as coal, ore, limestone, gypsum rock, and the like, and more particularly to an improved frame construction for crushers of the roll type.

Heretofore frames for crushers of the abovedescribed type have been cast metal structures, usually made of a plurality of cast members held 10 in properly assembled relation by dowels, bolts, and like-fastenings. With a view of resisting the twisting or torsional stresses, caused by crushing strains, to which they are subject when in use,

these crushing'structures have been unnecessarily heavy and cumbersome. But weight alone does not insure the frame against breakage, and the principal object of my invention is to provide a frame of sufficient strength that will be much lighter than those heretofore made.

The feature of my invention is the provision of a one-piece frame, made up of a plurality of preformed parts welded together in proper relation and position. With such construction, not only is the weight of the frame materially reduced, but a frame is provided which is less likely to be damaged by reason of twisting stresses than the cast frames of roll Crushers heretofore known.

A further object of my invention is to provide a relatively light frame of maximum strength, properly reinforced throughout its extent and particularly adapted for resisting stresses incident to the use of crusher structures of the roll type.

An embodiment of my invention is illustrated in the accompanying drawings, in which:

Figure 1 is a side elevation of a frame for single roll crushers, embodying features forming the subject of my invention.

Fig. 2 is a longitudinal sectional view of the structure shown in Fig. 1, taken on the line IIII, Fig. 3.

Fig. 3 is an end elevation looking in the direction of the arrow at, Figs. 1 and 2.

5 Fig. 4 is a cross sectional view on the line IVIV, Fig. 1; certain of the parts of the crushing' mechanism being diagrammatically illustrated, and

Fig. 5 is a fragmentary view, illustrating a 50 modified construction of the side frames to facilitate mounting of the crusher roll and its shaft.

The crusher frame comprises a plurality of preformed metal sections, including side plates or members l6, H], of channel formation, and

55 cross members secured to and spacing said side members apart in proper position. The side members ID are preferably made from plates of the desired size, suitably bent substantially at right angles to their broad surfaces to form top 60 and bottom flanges it and NW, respectively.

The flanges lil may be reinforced for bolt connections by welding short plate sections In to the same. The side members l0, ID, are connected together and spaced apart by cross members disposed at their respective ends and indicated at H, i2, and it; such cross members being secured to the side members by Welding, electrically or otherwise, as indicated at :c.

The member H forms an end wall for the crushing chamber A, in which the roll B is mounted, and is provided with upper and lower flanges i l and l l preferably arranged in planes opposite the flanges W and of the side members Hi, l6, and to which they are welded. This end wall member It may be curved in the manner indicated in Fig. 2, in order that the driving shaft may lie outside such end wall. The crusher frame is substantially open at top and bottom, and such frame, consisting of a plurality of preformed elements welded together, may be described as a topless and bottomless rectangular structure of unit formation.

Each of the side members it, ill, may be provided with three circular openings, l4, l5, and it,

into which tubular sections ii, iii, and M! are insorted and welded in place; such sections forming, respectively, dead-eye bearing housings for a drive shaft, a roll shaft, and a rod or shaft from which a breaker plate is hung. By preference, these bearing housing sections are solid members-sections of rolled shafting, for instance-which are bored, after they have been welded in place, for the reception of bushings in which the respective shafts are mounted.

The drive shaft bearing housings I! and the roll shaft bearing housings E8 of the respective side members it may be interconnected at their peripheries by flange or rib elements welded to each of said bearing housings .and to said side members. Additionally, flange elements 20 extend from the bearing housings i! to the ends of the side members. Each of the bearing housings i? and i8 is supported by a rib or flange element, indicated at 2! and 22, respectively, and these elements are welded place against each side frame it and between the lower outer edge of each bearing housing and the lower'flange l of the channel members forming such side frames; the rib 2i abutting one of the bolt connection reinforces it. Reinforcing ribs or flangesv 23 and 2Q, extending radially from the upper edge of the roll shaft bearing housing it, are welded against the side frame liiand to the upper flange W of the same. Thus the bearing housings I? and it are rigidly interconnected and supported at their outer ends by reinforcing ribs or flanges welded thereto and to said side members "1..

Secured to the lower right hand end plate or cross member, indicated at [2 (Fig. 2), is a tubular section 33 through which may pass a rod or bolt, adapted to hold the breaker plate C in proper position and forming adjusting mechanism therefor. A bottom plate l2 extends between the side members l; being welded thereto and to the lower edge of the cross member [2, and internally of this portion of the structure vertically disposed knee plates or partitions I2 are welded to the end plate l2 and. the bottom plate I2 Reinforcing flanges or ribs 35 welded to the side members Ill, l0, and to the roll shaft bearing housings I5 carried thereby, extend diagonally from the latter and pass around the end member I2 of the crusher frame and are welded to such end member and to said tubular section 33. By means of such flanges or ribs 35, the roll shaft bearing housings are rigidly connected to the lower end member l2 of the frame and to the section 33 through which the adjusting rod passes. Additionally, the ribs or flanges 35 may be supported intermediate their length by reinforcing ribs or flanges 35 which abut the bolt connection reinforces The end member l3 may be made of a plate bent to the cross-sectional form shown in Fig. 2, with the flanged portions [3 and I3 the lateral edges of said member I3 being welded to the inner wall surfaces of the side frame members 10. This arrangement provides a fixed heel (which may have a wear member as indicated by dotted lines) for crushing, above the mounting for the breaker plate C; the latter being adjustable without constricting the opening of the crushing chamber and permitting the handling of large crushing.

As is well known, the stresses imparted to the roll shaft vary continuously and as a result, the bearing housings carrying this shaft are subject to continuously changing stresses. Likewise, the drive shaft is subject to continuously varying stresses due to variations in the quantity and/or character of the material being crushed. Consequently, it is necessary to provide means not only to suitably support the shafts but to eliminate bending stresses which would otherwise cause fatigue and early breaking down of the frame. To this end, more reinforcing ribs or flanges than are necessary to support the bearing housings are provided. For instance, either of the ribs or flanges 23 or 24 might be eliminated without materially affecting the support given to the bearing housings l8, but the elimination of either would undesirably increase or, more properly expressed perhaps, fail to decrease sufficiently the amount of unsupported frame surface which, without such reinforcing ribs or flanges, would tend to weave or bend. In addition to the flanges or ribs 20, 23, 24, and 35, carried by the side frames ill, I may provide the ribs or flanges 25 and 26; the former connecting the bearing housings l8 and I9, and the latter lying between the bearing housing l9 and the upper flange l0 of the side member ID.

The several flanges carried by and welded to the side plates l0, among which may be mentioned those indicated at 20, 25, and 35, which intimately connect together, and to said plates Hi, the drive-shaft bearing housing l1; the rollshaft bearing housing I8; the breaker-plate supporting rod bearing housing l9, and the section 33 through which the breaker-plate adjusting rod passes, are of a weight and disposition suflicient to take all of the stresses to which the structure may be subjected; such arrangement producing a rigid frame wherein such side plates I0, largely functioning as walls defining the crushing chamher, are relieved of all stress.

While the end member I! does not carry side flanges, it is rendered rigid by the welding of its lateral edges to the inner surface of the side frame member It, Hi, taken in conjunction with its curved shape. By making the bend in this member in the manner indicated and sufficiently deep, the drive shaft may be located outside of the crushing chamber and at the same time liberal space is preserved within the frame for reception of material undergoing crushing.

In the embodiment of my invention illustrated in Fig. 5, I have shown a split bearing housing comprising the sections 5%, 50 to serve as a support for the roll shaft; the lower part 50 of which bearing housing is welded to the side plate 53, and to the ribs or flanges 2t, 22, and 35. In the development of a structure involving this construction, substantially wedge-shaped recesses or openings are cut in the side members l0, and ribs or flanges indicated at El and 5H may be welded to the side members at the lateral edges of these openings. In the space between these flanges 5! and 5N, a plate segment 52, flanged at 52 to overlie the flanges Ill of the side members !!l, may be fitted. This segment overlies the upper half 58 of the bearing housing and is provided with side flanges or ribs 53, 53 abutting the flanges 5i and 5H. It may be secured in place in any suitable manner; by bolts 54 and 55, for instance, or by a through bolt as indicated at 56, in lieu of the bolts 55. The upper bearing housing section 59 may be secured to the ribs or flanges 25 and by bolts 51.

Various departures may be made from the above-described and illustrated embodiments of my invention without departing from the spirit and scope thereof as set forth in the appended claim.

I claim:

A unit frame for roll crushers comprising vertical side walls in parallel relation and each of said Walls having a plurality of openings of which some are larger than others; said openings being in transverse alignment, bearing housings mounted in. said larger openings and welded to said walls; said walls consisting of integral rolled plate members with outturned top and bottom flanges horizontally disposed, reinforcing ribs welded to the outer surface of said walls between the bearing housings and between the bearing housings and said flanges of the side walls for reinforcing said side walls and supporting said bearing housings, a cross member of channel form transversely disposed between the vertical side walls at one end of the frame and extending from top to bottom of the same, a cross member at the opposite end of the frame transversely disposed above one set of the bearing housings; said cross-members defining the longitudinal dimensions of the crushing chamber and being welded at their end edges to said side walls, a base plate disposed between said side walis at one end of the frame and having its end edges welded to said side walls, and a vertical end plate connected to said base plate and the side walls; one pair of said reinforcing ribs extending from the outer surface of said vertical side walls around said end plate.

WILLIAM A. BAT'I'EY.

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