US3645459A - Rotor for a roll crusher - Google Patents

Rotor for a roll crusher Download PDF

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Publication number
US3645459A
US3645459A US15630A US3645459DA US3645459A US 3645459 A US3645459 A US 3645459A US 15630 A US15630 A US 15630A US 3645459D A US3645459D A US 3645459DA US 3645459 A US3645459 A US 3645459A
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US
United States
Prior art keywords
face
rotor
groove
wall
crushing
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Expired - Lifetime
Application number
US15630A
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English (en)
Inventor
Robert Lucas
Jean-Pierre Millier
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Fives Lille Cail
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Fives Lille Cail
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Filing date
Publication date
Application filed by Fives Lille Cail filed Critical Fives Lille Cail
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Publication of US3645459A publication Critical patent/US3645459A/en
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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B02—CRUSHING, PULVERISING, OR DISINTEGRATING; PREPARATORY TREATMENT OF GRAIN FOR MILLING
    • B02C—CRUSHING, PULVERISING, OR DISINTEGRATING IN GENERAL; MILLING GRAIN
    • B02C13/00—Disintegrating by mills having rotary beater elements ; Hammer mills
    • B02C13/26—Details
    • B02C13/28—Shape or construction of beater elements
    • B02C13/2804—Shape or construction of beater elements the beater elements being rigidly connected to the rotor

Definitions

  • This invention relates to crushing equipment, and particularly to an improved fastening arrangement for fastening the teeth or crushing elements of a roll crusher to the rotor of the crusher.
  • An object of this invention is the provision of a rotor arrangement in acrusher of the type described in which the crushing elements are secured to the rotor in such a manner that there is no relative movement of the elements and the rotor during normal Crusher operation, yet the elements may be released without otherwise disassembling the rotor.
  • the invention provides the rotor with a plurality of axially elongated grooves which are open in a radially outward direction.
  • the crushing ele ments are elongated and partly received in respective grooves.
  • a wedge element is provided in each groove for securing an associated crushing element against movement relative to the roller.
  • several pins are spaced along the length of the element and are elongated transversely of the direction of elongation of the associated element, and substantially tangentially relative to the rotor axis. They hold a radially extending face of the element in abutting engagement with a radially extending wall of the associated groove.
  • FIG. ll shows the rotor arrangement of a Crusher of the invention in radial section
  • FIG. 2 illustrates a modified rotor arrangement in fragmentary radial section
  • FIG. 3 shows the rotor of FIG. 1 and ⁇ 2 without its crushing elements in a perspective view
  • FIG. l shows one of the crushing elements of the rotor of i FIGS. l and 3 in a perspective view, partly in radial section, and on a scale larger than that of FIG. 3.
  • each groove l2 extends in a chordal plane of the rotor, and the flat trailing wall of the groove is perpendicular to the bottom.
  • the flat leading wall is inclined toward the trailing wall at anangle of about l0.l5 so that the groove tapers ina radially outward direction, i.e., it is of dovetailed cross section.
  • a crushing element I4 is partly receivedin each groove and projects more beyond the leading wall of the groove l2 than beyond the trailing wall.
  • the crushing element has the overall shape of an elongated, rectangular bar, as is also seenin FIG. 4.
  • the element In the illustrated operative position of FIG. I ⁇ , the element is radially offset from the groove bottomi in an out-ward direction and held in position by a prismatic wedge I6 of trapezoidal cross section which is as long as the element 14 andcon ⁇ formingly fills thetspace between the leading wall of the groove l2 and the leading faceof the element I4.
  • a key i8 whichis a round rod ofmild steel simultaneously received in semicylindrical grooves of the abuttingly engaged faces of the wedge and ofthe crushing element.
  • the cmshing element 14 is formed .with as many radially elongatedslots 22 of T-shaped crosssection as there are pins or bolts 20, only two slots 22 being visible in FIG. 4.
  • the flange part of the slot that is, that part of the slot which forms theflange of the T in the cross section of the slot is axial or practicallyparallel to the trailing face ofthe crushing element 14 and to the trailing face of the groove l2 which abuttingly engages the corresponding face of the element in area contact.
  • the web part of the slot 22 extends in a chordal plane and is perpendicular to the trailing face of the crushing element. It partly receives the stem of the bolt 20 whereasthe square head of the bolt is received in the flange part of the slot 22, the dimension of the slot longitudinally ofthe element I4 being g only slightly greater than one side of the bolt head to prevent rotation ofthe bolt.
  • the rotor 10 is formed with open slots 23 which communicate with groove l2 in the trailing wall ofthe latter and receive the remainder of the stem portion of a respective bolt 20.
  • An enlarged portion of each slot 23 receives the free end of the associated bolt 20 and a nut 21 on the bolt.
  • the tightened nuts 2li normally hold the trailing face of the crushing element 14 in fixed engagement with the trail' ingwall of the groove ⁇ l2.
  • the restraint of the bolts 20 is sufficient to prevent the crushing element lllfrom moving away from thegroove wall.
  • the wedge ⁇ It carrying the key 18 is placed on thebottom of the groove ⁇ ll2'against the leading wall.
  • the bolts 20 are slipped into ⁇ the slots 22, ⁇ and the element 14 is inserted into the groove l2 while theA stems of the bolts enter the slots 23.
  • the widthof the groove at the ⁇ bottom is sufficient so that the element 114i may clear the key ll which projects from the wedge I6.
  • the wedge 16 and element lld are then moved toward each other until the key I8 engages the semicylindrical groove in theleading face of the crushing element, and the wedge and crushing element are thereafter moved jointly in a radially outward direction into the position seen in FIG. ⁇ ll in which they are temporarily held by a wedge or by shims, not shown.
  • centrifugal forces drive the connected .i wedge .and crushing element outwardly of the groove 1l2 until they are firmly clamped between the opposite walls of the groove.
  • the nuts 2l are thereafter placed on the free ends of the bolts 20 and tightened.
  • the temporary shms or wedges may -be removed.
  • the crushing elements 20 have the same external contigurationas the elements 20 described above, and are mounted on a rotor 10 identical with that shown in FIGS. lland.
  • Awedge I6 and an associated key hold each element in position in its groove.
  • the element 20' has as many tangential bores as ⁇ .there are bolts 20', and the orifices of the boresl in the leading face of the crushing element are slightly enlarged to receive the flat heads of the bolts 20' otherwise similar to the ⁇ aforedescribed bolts 20.
  • the orifices of the bores and the bolt heads recessed therein are protected by the wedge 16 which largely covers the orifice.
  • the rotor arrangement shown in FlG. 2 is assembled in a manner obvious from the above description of FIGS. 1, 2, and 4.
  • a crusher comprising a rotor mounted for rotation about an axis, a plurality of crushing elements projecting outwardly of theperiphery of the rotor and disposed in axially elongated grooves extending lengthwise in the rotor periphery, each of the grooves being of dovetailed cross section having one elongated wall extending in a chordal plane of the rotor and another elongated wall tapering in an outward direction, each crushing element having a first face in abutting engagement with the one elongated wall of the groove wherein it is disposed and a second face opposite and substantially parallel thereto, a plurality of pin members fastening each of said crushing elements to the rotor, the pin members holding the first face of each crushing element in the abutting engagement with the one elongated wall of the groove wherein it is disposed, and wedge means interposed between the opposite face of each crushing element and the tapering wall of the groove wherein it is disposed, the improvement of each wedge means comprising
  • a crusher as set forth in claim 1 said element being formed with a radially elongated slot substantially T-shaped in cross section and open in a radially inward direction, said slot having a web part open toward said face and a flange part substantially parallel to said face, one of said pin members having a head portion received in said flange part and a stem portion partly received in said web part.
  • said rotor being formed with a radially open slot, said stem portion being partly received in said slot, and securing means securing said pin member against longitudinal movement in said slot of the rotOi'.
  • the key means being mounted in cooperating grooves in the second wall of the crushing element and one ofthe opposite walls of the wedge member.
  • the crushing element being formed with a plurality of bores receiving the pin members, each bore having an enlarged orificeremote from the first face of the crushing element and at least partly covered by the wedge member, and each pin member having a head portion received in the orifice and a stem portion extending from the head portion through the first face and into the one wall of the groove.

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  • Engineering & Computer Science (AREA)
  • Food Science & Technology (AREA)
  • Crushing And Pulverization Processes (AREA)
US15630A 1969-02-28 1970-03-02 Rotor for a roll crusher Expired - Lifetime US3645459A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR6905246A FR2033578A5 (xx) 1969-02-28 1969-02-28

Publications (1)

Publication Number Publication Date
US3645459A true US3645459A (en) 1972-02-29

Family

ID=9029760

Family Applications (1)

Application Number Title Priority Date Filing Date
US15630A Expired - Lifetime US3645459A (en) 1969-02-28 1970-03-02 Rotor for a roll crusher

Country Status (10)

Country Link
US (1) US3645459A (xx)
BE (1) BE746467A (xx)
CH (1) CH509829A (xx)
DE (1) DE2009405A1 (xx)
DK (1) DK126760B (xx)
FR (1) FR2033578A5 (xx)
GB (1) GB1245725A (xx)
LU (1) LU60427A1 (xx)
NL (1) NL7002888A (xx)
SE (1) SE356224B (xx)

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3784117A (en) * 1971-09-30 1974-01-08 Hazemag Hartzerkleinerung Rotor for use in impact crushers
US4352774A (en) * 1980-03-13 1982-10-05 The Frog, Switch & Manufacturing Company Method and arrangement for support of contact elements of hammermills and the like
US4925114A (en) * 1988-04-15 1990-05-15 Cedarapids, Inc. Impeller bar installation and repositioning means for impact crushers having "open" type rotors
AU615281B2 (en) * 1988-04-15 1991-09-26 Cedarapids, Inc Impeller bar installation and repositioning means for impact crushers having "open" type rotors
US5833153A (en) * 1996-03-06 1998-11-10 W. S. Tyler, Incorporated Rotor assembly for horizontal impact crusher
WO2002057018A1 (en) * 2001-01-16 2002-07-25 Sprout-Matador A/S Rotor for hammer- or chopper mill

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2635817A (en) * 1950-08-21 1953-04-21 Leo H Long Impact breaker bar mechanism
US3146961A (en) * 1962-08-23 1964-09-01 Fuller Co Impact hammer
US3295773A (en) * 1963-08-26 1967-01-03 Missouri Rogers Corp Crusher
US3455517A (en) * 1966-02-04 1969-07-15 Portec Inc Rotary impact crusher

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2635817A (en) * 1950-08-21 1953-04-21 Leo H Long Impact breaker bar mechanism
US3146961A (en) * 1962-08-23 1964-09-01 Fuller Co Impact hammer
US3295773A (en) * 1963-08-26 1967-01-03 Missouri Rogers Corp Crusher
US3455517A (en) * 1966-02-04 1969-07-15 Portec Inc Rotary impact crusher

Cited By (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3784117A (en) * 1971-09-30 1974-01-08 Hazemag Hartzerkleinerung Rotor for use in impact crushers
US4352774A (en) * 1980-03-13 1982-10-05 The Frog, Switch & Manufacturing Company Method and arrangement for support of contact elements of hammermills and the like
US4925114A (en) * 1988-04-15 1990-05-15 Cedarapids, Inc. Impeller bar installation and repositioning means for impact crushers having "open" type rotors
AU615281B2 (en) * 1988-04-15 1991-09-26 Cedarapids, Inc Impeller bar installation and repositioning means for impact crushers having "open" type rotors
US5833153A (en) * 1996-03-06 1998-11-10 W. S. Tyler, Incorporated Rotor assembly for horizontal impact crusher
WO2002057018A1 (en) * 2001-01-16 2002-07-25 Sprout-Matador A/S Rotor for hammer- or chopper mill
US20040113001A1 (en) * 2001-01-16 2004-06-17 Jorgensen Henning S. Rotor for hammer-or chopper mill
US7040560B2 (en) 2001-01-16 2006-05-09 Sprout-Matador A/S Rotor for hammer-or chopper mill

Also Published As

Publication number Publication date
GB1245725A (en) 1971-09-08
CH509829A (fr) 1971-07-15
FR2033578A5 (xx) 1970-12-04
DE2009405A1 (de) 1970-09-10
NL7002888A (xx) 1970-09-01
LU60427A1 (xx) 1970-04-28
SE356224B (xx) 1973-05-21
DK126760B (da) 1973-08-20
BE746467A (fr) 1970-07-31

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