Patent EA-002649-B1 (EA)
Title: An engaging element of combing device
IPC: A01D41/06
Filed: 1999-07-21
Abstract: 1. An engaging element of a combing device, comprising a belt conveyor with brackets fastened thereon and combing teeth attached to said brackets, characterized in that recesses are provided on the upper teeth surfaces at their base portion and protrusions at their distal end, wherein the tangent to any point of the teeth upper surface facing the conveyor, normal in plane to the belt surface, has an angle of inclination to a straight line connecting this point with an axis of rotation of the conveyor upper shaft lesser than the friction angle between grain masses a tooth material, the lower surface of each tooth is formed of two inclined concave, convex or rectangular surfaces crossing in the direction from the tooth base to its distal end. 2. An engaging element of a combing device, comprising a drum with brackets fastened thereon and combing teeth attached to said brackets, characterized in that recesses are provided on the upper teeth surfaces at their base portion and protrusions at their distal end, wherein the tangent to any point of the teeth upper surface facing the conveyor, normal in plane to the belt surface, has an angle of inclination to a straight line connecting this point with an axis of rotation of the conveyor upper shaft lesser than the friction angle between grain masses a tooth material, the lower surface of each tooth is formed of two inclined concave, convex or rectangular surfaces crossing in the direction from the tooth base to its distal end. 3. An engaging element of a combing device according to claim 1, characterized in that protrusions are provided perpendicular to the movement direction from the belt backside opposite the upper portion of each bracket. 4. An engaging element of a combing device according to claims 1 to 3, characterized in that each tooth is mounted with a turn relative to its longitudinal axis so that its upper surface is inclined to the middle of the combing device. 5. An engaging element of a combing device according to claims 1 to 4, characterized in that the angle of inclination of the upper surface increases from the middle of the combing device to its edges. 6. An engaging element of a combing device according to claims 1 to 5, characterized in that the lower surface of each tooth is non-symmetrical and teeth are arranged so that the tooth side the lower surface of which has a lesser inclination angle to the horizontal surface faces the middle of the combing device. 7. An engaging element of a combing device according to claims 1 to 6, characterized in that grooves are provided on the upper tooth surface directed from its base to the distal end. 8. An engaging element of a combing device according to claims 1 to 7, characterized in that the tooth thickness in the recess zone greater in the middle of tooth than at its edges. 9. An engaging element of a combing device according to claims 1 to 8, characterized in that a resilient figured protrusion is provided in the upper teeth portion and the teeth are attached to the brackets of the conveyor belt so that the upper tooth surface is smoothly conjugate with the outer belt surface not forming counter protrusions. 10. An engaging element of a combing device according to claims 1 to 9, characterized in that a resilient figured protrusion is provided in the upper teeth portion and the teeth are attached to the brackets of the drum so that the upper tooth surface is smoothly conjugate with the outer belt surface not forming counter protrusions. 11. An engaging element of a combing device according to claims 1 to 10, characterized in that thrusts are provided in the teeth bottom portion and arranged at the bottom part of brackets. 12. An engaging element of a combing device according to claims 1 to 11, characterized in that recesses are provided on a tooth surface abutting a bracket and corresponding protrusions are provided in a bracket surface. 13. An engaging element of a combing device according to claims 1 to 12, characterized in that a pressure plate made of hard material is arranged beneath teeth, wherein the plate shape is configured so that its front edge repeats teeth contours at their base.