Claims
- 1. A comminuting machine, particularly a roll crusher, comprising a housing; two rotors mounted in said housing for rotation about substantially horizontal axes and having axially staggered circumferentially extending annuli of external teeth, the annuli of external teeth of one of said rotors alternating with the annuli of external teeth of the other of said rotors in the axial direction of said rotors, said rotors defining a nip and being arranged to rotate in opposite directions so that their teeth move from above toward, through and downwardly beyond said nip; a substantially flat grate having two sets of teeth, the teeth of one of said sets alternating with said annuli of teeth of one of said rotors and the teeth of the other of said sets alternating with the annuli of teeth of the other of said rotors; and mounting means provided on said housing and defining for said grate a pivot axis located at a level below one of said rotors, said grate being turnable in its entirely about said pivot axis between an operative position in which said sets of teeth extend from below between the annuli of teeth of the neighboring rotors in the region from said nip to the undersides of both rotors and an inoperative position in which said grate extends vertically downwardly from said pivot axis.
- 2. The machine of claim 1, wherein each of said rows sets of teeth has an end portion adjacent said mounting means.
- 3. The machine of claim 1, wherein said pivot axis is at least substantially parallel to the horizontal axis of said one rotor.
- 4. The machine of claim 1, wherein said housing has an opening and means for selectively closing and exposing said opening, said grate having first and second sides respectively facing toward and away from said opening in the inoperative position of said grate.
- 5. The machine of claim 4, wherein said teeth are located at the general level of said opening in the inoperative position of said grate.
- 6. The machine of claim 1, wherein said grate further comprises a pair of spaced-apart cheeks and crossbeams extending between and connecting said cheeks to each other, said teeth being disposed intermediate said cheeks and being carried by said crossbeams.
- 7. The machine of claim 6, wherein at least one of said cheeks is secured to said mounting means and said crossbeams are at least substantially parallel to said pivot axis, said teeth being disposed in substantially vertical planes.
- 8. The machine of claim 6, further comprising means for releasably holding said grate in said operative position.
- 9. The machine of claim 8, wherein said holding means comprises a pair of shafts supporting said cheeks in the operative position of said grate and extending from said housing, reinforcing means externally adjacent to said housing, and bearing sleeves connecting said reinforcing means with said housing and surrounding said shafts.
- 10. The machine of claim 8, further comprising manipulating means for moving said shafts axially in the respective bearing sleeves.
- 11. The machine of claim 6, wherein each of said sets has several rows of teeth and said grate further comprises a discrete carrier for each of said rows of teeth, said crossbeams having sockets removably receiving portions of said carriers.
- 12. The machine of claim 1, wherein each of said sets has several rows of teeth and each of said rows of teeth comprises a series of several teeth.
- 13. The machine of claim 1, wherein each of said sets has several rows of teeth and said grate further comprises a carrier for each of said rows of teeth, said carriers having lateral projections contacting the neighboring carriers.
- 14. The machine of claim 1, further comprising means for moving said grate between said operative and inoperative positions.
- 15. The machine of claim 14, wherein said housing has a pair of sidewalls disposed at the opposite axial ends of said rotor and said moving means comprises fluid operated motors mounted in the regions of said sidewalls and connected with said grate.
- 16. The machine of claim 1, wherein the annuli of teeth on said one rotor are staggered with reference to the annuli of teeth on the other of said rotors, as considered in the axial direction of said one rotor.
- 17. A comminuting machine, particularly a roll crusher, comprising a housing; two rotors mounted insaid housing for rotation about substantially horizontal axes and having axially staggered circumferentially extending annuli of external teeth, said rotors defining a nip and being arranged to rotate in opposite directions so that their teeth move from above toward, through and downwardly beyond said nip; a grate having two sets of several rows of teeth each, the rows of teeth of each of said sets alternating with said annuli of a different one of said rotors, said grate further having a frame including a pair of spaced-apart cheeks and crossbeams extending between and connecting said cheeks to one another, said crossbeams including a mediam crossbeam and two outer crossbeams, the rows of teeth of one of said sets being supported by said mediam crossbeam and one of said outer crossbeams, beams, and the rows of teeth of the other of said sets being supported by said median crossbeam and the other of said outer crossbeams; and mounting means provided on said housing and defining for said grate a pivot axis located at a level below one of said rotors, said grate being movable about said pivot axis between an operative position in which said rows of teeth extend at least from below between the neighboring annuli of teeth and an inoperative position in which said rows of teeth are located beneath and extend downwardly from said pivot axis, each of said rotors overlying said grate when the latter assumes said operative position and the annuli of teeth on said one rotor being staggered with reference to the annuli of teeth on the other of said rotors, as considered in the axial direction of said one rotor.
Priority Claims (1)
Number |
Date |
Country |
Kind |
3203328 |
Feb 1982 |
DEX |
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Parent Case Info
This application is a continuation of application Ser. No. 462,381 filed Jan. 31, 1983, now abandoned.
US Referenced Citations (4)
Continuations (1)
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Number |
Date |
Country |
Parent |
462381 |
Jan 1983 |
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