US2822138A

US2822138A - olive

Info

Publication number: US2822138A
Authority: US
Publication date: 1958-02-04
Anticipated expiration: 1975-02-04

Description

Feb. 4, 1958 r P. c. OLIVE 2,822,138

IMPACT CRUSHERS Filed June 9, 1954 s Sheets-Sheet 2 a"! mum FEG.3.

INVENTOR PAUL C. OLIVE MwmPM ATTORNEYS Feb. 4, 1958 P. c. OLIVE 2,822,138

IMPACT CRUS'HERS Filed June 9, 1954 s Sheets-Sheet a FIG.8.

INVENTOR PAUL C. OLIVE ATTORNEYS tion Industn'elle des. Combustibles, Fontainebleau,

France Application June 9, 1954, Serial No. 435,538

Claims priority, application France June 10,1953

Claims. (Cl. 241-194) This invention relates to impact crushers and has more particular reference to impact: crushers: of the hammer type.

One object of the present invention is to provide-a novel.

and improved impactcrusher of theihammer type..

Another object of. the present inventionis to provide a novel and improved impact crusher, as characterized above, provided with a plurality. ofzpivotally mounted hammers adapted to be held intheir impact position by centrifugal force.

Another object of the presentinvention is to provide a novel impact crusher, as characterized above, wherein the hammers have symmetrical shapes permittingthem to be turned over when the'impact face or facesare worn out.

Another object of the present invention isto provide an improved impact crusher, as characterized above, wherein each of the hammers is mounted so that its. center of mass is spaced from the radius of the rotor passing through the pivotal axis of the hammer; thereby creating;

a centrifugal torque actingto hold the hammer: in working position when the rotor is rotating;

Another object of the invention; is to provide an improved impact crusher, as characterized above, having a concave impact plate, a plurality of laterally adjustably spaced impact bars and a plurality of laterallyadjustably spaced bars forming a covering for theevacuation outlet for the crushed products.

A further object of the. present invention is to provide a novel and improved impact crusher whichis'simplein construction, inexpensive to manufacture, and eificientin operation.

Other objects and advantages of the invention will appear in the specification when considered in connection with the accompanying drawings, wherein:

Fig. 1 is a transverse sectional view of an impact crusher constructed in accordance with the presentinvention;

Fig. 2 is a sectional view taken on the-line 2-2 of Fig. 1;

Fig. 3 is a plan view of the apparatusshown in Fig 1;

Fig. 4 is a perspectivelview of one of the impact hammers shown in Figs. 1 and 2;

Fig. 5 is a view similar to that shown in. Fig. 4, but showing a modified form. of hammer adapted to be mounted in the apparatus shown in Fig. 1;

Fig. 6 is a view similar to that. shown in Fig. 2, but showing a modified form of rotor with. amodified form of hammer mounted thereon;

Fig. 7 is a perspective view showingthe details of the modified form of hammer shown in Fig. 6;

Fig. 8 is a view similar to that shown in Fig.2, but showing a modified form of rotor having a modified form of hammer mounted thereon; and V Fig. 9 is a perspective view showing the details of one of the hammers shown in Fig. 8.

In general, the present invention provides. a noveland improved impact crusher comprisinga. ho us ing;, a rotor.

assembly mounted for rotation therein-andcarrying, a plurality of peripherally spaced pivotally mounted zhammers,v with each hammer having'a plurality of impact faces or ICC edges so positioned that when one impact face is'worn out the hammer can be changed on its pivotal mounting to The invention further contemplates the provision of-a.

concave impact plate mounted in the top portion of the housing; a plurality of removably adjustably mounted impact bars positioned in the bottom of the housingbelow theimpact plate; and a plurality of adjustable laterally spaced grate bars extending across the evacuation opening in the housing.

Referring now to thedrawings, there is illustrated in Figs. 1, 2 and 3, one embodiment of the impact crusher constructed according with the present invention. As there shown, the crusher comprises a housing 10; a shaft 11 extending horizontally through. the end. walls of the housing with its projecting ends journaled in suitable bearings 12 mounted on brackets fixedly attached to the housing, with one end of the shaft carrying means for rotation thereof; a rotor assembly, indicated generally at 13, fixedly, mounted on the shaft 11 for rotation therewith and carrying a plurality. of hammers 14 pivotally mounted thereon; a concave impact plate 15 attached to the upper portion of the housing; a plurality of impact bars 16 extending longitudinally of the housing with their ends removably.

supported by the end walls of the housing; and a plurality of laterally spaced grate bars 17 extending longitudinally of the housing with their ends removably supported by the end walls of the housing.

The housing 10 may be of any suitable shape. It is shown as having a concave top wall, indicated at 18,

vertical side walls

19, 20 and vertical endwalls 21, 22. The. housing is mounted on a suitable support or base, indicated at 23, and is provided with an inlet conduit 24 for the entrance of the products to be treated.

The rotor assembly comprises a plurality of disc-like members 25 axially spaced along the. shaft 11.

shown, may have. a common hub 26 and be formed integral therewith. The disc-like members 25 are identical:

in construction with. each having a contour as shown. in Fig. 1, and. with each having a plurality of circumferentially spaced. radially extending support members. or

wings 27. Each of the support members 27 has an open-.

ing 28. extending therethrough and has a hook-shaped recess formed in one end portion to provide. an abutment or stop29.

As shown, the discs 25 are formed integral with thehub.

form an axle on which the hammers are pivotally mounted (see Figs. 1 and 2).

The hammers. 14 are identical in construction and are of theshape shown in Fig. 4. Each hammer isprovided with an opening or, bore 31 so that it may be pivotally mounted on one of the rods 30 between an adjacent pair.

of wings or support members 27. Each hammer, as shown in Fig. 4, is provided withstops, 32, one oneach. side wall, in position to engage, when the hammer is in.-

impact. position, with the abutment 29 on the adjacent wing member. In this particular modification, each ofv the hammers is shown as beingsymmetricalwith respect to a vertical plane passing, through its pivotal, axis. and. has two similar impact faces or edges, 33., 34 formed. on;

opposite sides of its free end. This permits the hammers Patented. Feb. 4,1958

The disclike members 25 may have separate hubs, or, and as.

with oppositely disposed stop members 64 on its side walls.

Each of the hammers 14", as shown in Fig. 9, is symmetrical with respect to a vertical plane passing through its pivotal axis and may be turned around on its pivotal axis when one impact face is worn out to bring its other impact face into working position.

Each hammer 14" is pivotally mounted between aligned pairs of wing members 27" with the axles or rods between the wing members passing through the opening 63 in one of the legs 61, 62.

The abutments on the wing members 27" and the stops on the legs 61, 62 are so positioned relative to the axles 57 that the center of gravity of the hammer, when in its working position, is spaced from a radius of the shaft 11 passing through the pivotal axis of the hammer, when the rotor assembly rotates, thereby creating a constant centrifugal torque holding the hammer against the abutments on the wing members.

From the foregoing, it readily will be seen that there has been provided a novel and improved impact crusher comprising a rotor assembly having a plurality of hammers pivotally mounted thereon so as to be held in their working position by centrifugal force and with each hammer having its center of gravity spaced from a radius of the rotor passing through the pivotal axis of the hammer to provide an increased and constant torque and with each hammer being made of a symmetrical shape so that it may be turned over when one impact face is worn out to present a new impact face, or reversed end for end to present additional new impact faces; a curved impact plate portion to receive material thrown thereagainst by the hammers; impact bars mounted below the impact plate to act as anvils for the hammers; and grate bars forming a grating for the evacuation outlet.

Obviously, the invention is not restricted to the embodiments thereof herein shown and described.

What is claimed is:

1. In an impact crusher, a housing, a rotor assembly mounted for rotation therein, said rotor assembly including a plurality of peripherally spaced abutments; a plurality of peripherally spaced pivotally and removably mounted impact hammers carried by said rotor assembly, each of said hammers being symmetrical with respect to its longitudinal axis and provided with stop means positioned to engage at least one of said abutments when the hammer is in working position and opposed impact faces on its free end portion so that when one impact face he comes worn the hammer may be removed and replaced on its pivotal axis to bring the other impact face into position to be used, said stop means on each hammer and the abutment engaged thereby, when the hammer is in working position, being so positioned relative to each other and the pivotal axis of the hammer that the radius of the rotor assembly passing through the center of gravity of the hammer will be angularly displaced, in a direction opposite the direction of rotation of the rotor assembly, from the radius of the rotor assembly passing through the pivotal axis of the hammer, thereby creating a constant centrifugal torque holding the hammer in working position when the rotor assembly is rotating; means for rotating said rotor assembly; and means for feeding a stream of the product to be crushed into the path of movement of said impact hammers.

2. Apparatus as set forth in claim 1, wherein each of said hammers is symmetrical with respect to its median transverse axis and has opposed impact faces on each of its ends and is provided with pivoted mounting means adjacent each end, the construction and arrangement being such that the hammer may be pivotally mounted by either of its ends so that any one of its four impact faces may be brought into working position.

3. Apparatus as set forth in claim 1, wherein said rotor assembly is mounted for rotation about a horizontal axis and includes a hub member carrying a plurality of longitudinally extending circumferentially spaced rows of fiat radially extending laterally spaced support members each having an abutment formed thereon, and a plurality of axles, one extending through all of the support members in each of said rows, and wherein said impact ham.- mers are pivotally and removably mounted on said axles, one between each adjacent pair of support members in each of said rows; and wherein each of said hammers is provided with opposed laterally extending stop members positioned to engage the abutments carried by the pair of support members between which it is mounted when in working position.

4. Apparatus as set forth in claim 1, wherein said rotor assembly is mounted for rotation about a horizontal axis and includes a hub member having two circumferential rows of radially extending circumferentially spaced flat support members formed thereon, one on each end, with each support member in one row horizontally aligned with a corresponding support member in the other row and with each support member having an abutment formed thereon; and a plurality of axles, one extending between each corresponding pair of support members; wherein each of said impact hammers is in the form of an elongated rectangular frame formed by a spaced parallel pair of impact bars connected together at their ends by leg members, each of said bars having opposed impact faces and each of said leg members having a pair of spaced openings horizontally aligned with the corresponding openings in the other leg and with each leg carrying stop members positioned to engage the abutments on the support members between which the hammer is mounted when in Working position, the construction and arrangement being such that each hammer may be pivotally mounted to bring any one of its four impact faces into working position.

5. Apparatus as set forth in claim 1, wherein said rotor assembly is mounted for rotation about a horizontal axis and comprises a shaft having an axially spaced pair of hub members mounted thereon for rotation therewith, each of said hub members having two axially spaced circumferential rows of radially extending circumferentially spaced fiat support members formed thereon with each support member in one row horizontally aligned with a corresponding support members in the other row and with each support member having an abutment formed thereon; a plurality of axles, one extending between each corresponding pair of support members carried by each of said hub members; wherein each of said hammers comprises an elongated bar having longitudinally extending impact faces formed on each side and carrying a pair of laterally extend-ing legs, one on each end, provided with horizontally aligned openings and horizontally aligned stop members, and wherein each hammer is mounted on the rotor assembly with its legs pivotally mounted on the axles extending between corresponding pairs of support members and with the stops on its legs positioned to engage the abutmients on the support members between which it is mounted when the hammer is in working position.

References Cited in the file of this patent UNITED STATES PATENTS Re. 14,926 Plaisted July 27, 1920 845,171 Gardner Feb. 26, 1907 1,354,855 Simpson Oct. 5, 1920 1,757,452 Dellinger May 6, 1930 1,761,083 Liggett June 3, 1930 1,841,355 Bowen Jan. 19, 1932 1,947,783 Levin Feb. 20, 1934 2,045,688 Armstrong June 30, 1936 2,563,958 Pollitz Aug. 14, 1951 FOREIGN PATENTS 167,239 Switzerland Feb. 15, 1934 Feb. 4, 1958 .SARKA COIL HANDLINGMECHANISM 4 Sheets-Sheet 1 Filed June 25, 1956 INVENTOR Albert J Sorku