US1886908A

US1886908A - Crushing mill concave holding means

Info

Publication number: US1886908A
Application number: US311346A
Authority: US
Inventors: Harvey H Rumpel
Original assignee: SMITH ENGINEERING WORKS
Current assignee: SMITH ENGINEERING WORKS
Priority date: 1928-10-09
Filing date: 1928-10-09
Publication date: 1932-11-08
Anticipated expiration: 1949-11-08

Description

Nov. 8 1932. H. H. RUMPEL GRUSHING MILL CONCAVE HOLDING MEANS Filed Oct. 9. 1928 m m m ATTORNEYS.

Patented Nov. 8, 1932 Lasers HARVEY In. numrnngor M LwAuKE-n, Wisconsin, nssrenon T0 SMITH ENGINEERING WORKS, or MILW'AUKEE, wrsoonsru, A conronnraon or WISCONSIN cnusrrine Minn concern HOLDING MEANS V 7 Application filed October '9, 1928. Serial 'No. 311,346.

This invention relates to improvements in crushing mill concave holding means.

It'is'one of the objects of the present invention to provide a crushing mill concave holding means in which the concave member is connected to its support in a manner to firmly hold the concave member in position and to permit its easy removal in case of breakage orrepa'ir.

A further object of the invention is to provide a. crushing mill concave member having means for yieldingly holding the concave member in working position. i

A further object of the invention is to provide a crushing millconcav'e holding means which is of simple construction, is strong and durable, and is well adapted for the purpose described; 1 v I With the above and other objects in view theinvention consists ofthe improved crushing mill conc-aveliolding means and its parts and combinations asset forth in the claims, and all equivalents thereof.

ln the accompanying drawing in which the same reference characters indicate the same parts inall of the views: 7 Fig. 1 is-a vertical central sectional view'of the upper portion of acrushing mill provided with the improved concave holding means;

Fig. 2 is a'transverse sectional detail view thereof taken on line 22 of Fig. 1; and

Fig. 3 isa top view of the concave grinding i'member removed from the mill.

Referring to the drawing, the reference jnumeralc indicates a lower frame or casing jwhich'is of cylindrical form and is provided "with an "upper and outwardly extending flang'e '6. A crusher shaft *8 'eccentrically journaled in a sleeve shaft 9is provided with a crushe'rhead '10 at its upper end. A-cap 11 holds the head in position on the shaft 8.

Anfupper housing or frame 12 is formed with an annular rounded flange l8 whichextends over and engages the upper rounded 'fla'nge'6 ofthemain frame. Bolts l kextend downwardly through both flanges 6 and 13 and are encircled by coiled springs 15 which iyieldingly hold the upper housing in posi- "tion. Pins 16andsprings 15 also assist in parts, and transversebolts 18 extend through radial lugs 18 formed on the split portions to draw the two parts into clam ingen ageinent withtlie upper or concave frame inember 19 around which it extends. The portion of the concave member surrounded by the I housing is of cylindrical form, and is provided with an inwardly extending annular flange 20 for receiving segmental shims which are placed at spaced intervals around the flange and between the flange and the housing to net the height of the concave member with relation to the ;crusher head 10. Bolts 22 a'dj'u-sta-bly support the weight of the concave fframe member 19, and pins 28 serve as guides to hold the partsin engagemen't. Said bolts and pins are positioned in the space between the end portions of the shims.-

An outer or concave crushing member '24 surrounds the crusher head 10 in spaced relationand is secured toithe inner concave porformed in the concave member portion 19. Thecontacting face portionsofth'e parts 19 and 2e are ground or machined to space the lugs 26 from the walls o'fth'e recesses and said spaces are filled with flat pieces of wood 28 or other easily compressible material, as wood,

to permit-'dra wing th'e bolts tight in the event that the zinc packing material 29, which is poured between the concave' meniber r and the irame' while in a molten "state, should give way.

The lower'por tijon of the concave member '19 is provided'with an apron 30 having a yielding packingring 3 1 mounted-on its out er side which bearsfaga inst the inner wall ofi the casing 5 to slidinglysealither connection 'tliereb'etween. The upper inner portion of the concave flange member 20 is provided with an upstanding collar 32 against which ighe inner upper edges of the concave housing ear.

A cylindrical support and feed spout 83 is connected to the upper portion of the concave frame member 19 and the collar 32 and extends upwardly therefrom to direct the material into the space between the concave 24 and the crusher head 10. All spaces between parts where dust or crushed material may gather are filled with Zinc rubber or other packing material 34 to protect said parts.

As the concave crushing member is completelybacked'and reinforced bythe concave frame member, a comparatively thin concave member may be used. Furthermore, the bolted suspension of the concave member permits easy removal and replacement of the concave member when worn. And still further the yielding connection between the concave frame member and the lower frame eliminates undue strain being borne by the concave member. The extension of the lugs of the concave member into the recesses holds the concave members in position and relieves the holding bolts of any turning strain which might be present. From the foregoing description it will be seen that the crushing mill concave holding means is of very simple construction and is well adapted for the purpose described.

That I claim as my invention is:

1. In a crusher mill having a gyratory crusher head, a concave holding means therefor, comprising a support extending around the crusherhead and having a concave portion provided with recesses and openings, a concave crushing member extending around the head and intimately engaging the support and having projecting portions which extend into the recesses and adjacent the openings, and bolts connected to the projecting portions and extending through the openings for firmly attaching the concave member to the projecting lugs which extend into the recesses and adjacent the side openings, and bolts extending through the lugs and the openings for firmly attaching the concave member to the frame, the extension of the lugs into the recesses relieving the bolts of rotary strain of the concave member. I

3. A crusher, comprising a frame having a concave portion provided with'recesses in its sides which have openings extending therethrough, a gyratory crusher head extending into the concave portion, a concave crushing member extending around the crusher head and engaging the concave portion of the frame and having horizontally projecting lugs which extend into the recesses, said lugs having openings which are in register with the openings of the frame, and bolts extending vertically through the openings of the lugs and the recessed portions of the frame for firmly attaching the concave member to the concave portion of the supporting frame, said lugs relieving the, bolts of rotary strain of the concave member.

4. A crusher, comprising a frame having a concave portion provided with recesses in its sides which have openings extending therethrough, a gyratory crusher head extending into the concave portion, a concave crushing member extending around the crusher head and having outwardly projecting lugs which extend into the recesses, said lugs having openings which are in register with the openings of the frame, pieces of yielding material interposed between the lugs and the lower surfaces of the recessed portions of the frame, and bolts extending through the openings of the lugs and the recessed portions and through the interposed pieces of material for attaching the concave member to the concave portion of the supporting frame. 7

5. A crusher, comprising a lower frame having an upper rounded edge, an upper frame having an annular groove in its lower edge portion into which the rounded edge of the lower frame extends, means yieldingly holding the two frames together, an inner frame extending into the upper frame and having a concave inner portion provided with recesses in its sides, a gyratory crusher member extending into the concave portion, a concave crushing member extending around the crusher head and having outwardly projecting lugs which extend into the recesses,

said lugs having openings which are in register with the openings of the frame, pieces of yielding material interposed between the lugs and the lower surfaces of the recessed portions of the frame, bolts extending through the openings of the lugs and the recessed portions of the inner frame, and a binding metal interposed in a fluid state between the concave member and the concave portion of the inner frame.

6. A crusher, comprising a frame having a concave portion provided with recesses in its sides which have openings extending therethrough, a gyratory crusher head ex tending into the concave portion, a concave,

crushing member extending around the crusher head and having outwardly projecting lugs which extend into the recesses, said lugs having openings which are in register with the openings of the frame, pieces of yielding material interposed between the lugs and the lower surfaces of the recessed portions of the frame, bolts extending through the openings of the lugs and the recessed portions and through the interposed pieces of material for attaching the concave member to the concave portion of the supporting frame, and a binding metal interposed in a fluid state between the concave member and the concave portion of the inner frame.

7. In a crusher, a frame, a concave supported by said frame andhaving recesses in its side portions and openings communicating with said recesses, a gyratory crusher head extending into said concave, a concave liner interposed between said head and said concave and having direct engagement with the lower portion of said concave, said liner having outwardly proj ecting lugs extending into said recesses, bolts passing through said openings and said lugs for firmly holding said liner within said concave, and filler metal interposed between said liner and said concave and between said lugs and the walls of said recesses, saidimetal providing a backing for said liner against said concave remote from said direct engagement for relieving said holding bolts from rotary strain.

In testimony whereof, I afiix my signature,

HARVEY H. RUMPEL-