CN202958234U - Knife roll assembly for straw cutter - Google Patents

Abstract

The utility model relates to a component of equipment for cutting and smashing plant stems, in particular to a knife roll assembly for a straw cutter. The knife roll assembly for the straw cutter comprises a rotatable knife roll and fly knives mounted on the knife roll, wherein a plurality of longitudinal counter knife faces are distributed at the periphery of the knife roll; included angles among the counter knife faces and a generatrix of a cylinder of the knife roll are 2-4 degrees; the fly knives are mounted on the counter knife faces; each fly knife on each counter knife face consists of two independent sections; and radial positions of knife edge straight lines of every two fly knife sections can be adjusted independently. According to the knife roll assembly, the fly knives longitudinally penetrating through the knife roll in the traditional structure are broken up into two shorter fly knife sections, and the two shorter fly knife sections can be adjusted independently, so that a variation range of a matching gap of the fly knives and a knife edge of a dead knife can be reduced greatly in a length direction of the whole knife roll, and a better cutting effect is obtained.

Description

Chaffcutter rotor assembly

Technical field

The utility model relates to a kind of for plant stem being sheared the part of appliance of pulverizing, specifically a kind of chaffcutter rotor assembly.

Background technology

The knife roller type chaffcutter is traditional product, is used for the enterprises in pulp and paper industry material papering section and cuts off various grass as raw material.Its rotor assembly includes rotor and evenly is arranged in many fly cuttves that pass through rotor on the rotor circumference, coordinates with the bed plate that is fixed on rotor one side with the fly cutter of rotor High Rotation Speed, and the grass as raw material that enters the share zone is cut off.Cut off the impact of careless class for reducing fly cutter and bed plate shear action; usually can be with fly cutter in the rotor installation that tilts; be about to the fly cutter straight line edge and become 2-4 ° of angle with rotor cylinder bus, fly cutter is not to contact simultaneously with the straight line edge of bed plate, but cross-shear gradually from one end to the other side.Bed plate and fly cutter cutting edge are seen from length direction and are straight line, but because fly cutter tilts to install, the fly cutter straight line edge is not cylinder with the formation of rotor rotational trajectory, when fly cutter cutting edge straight line two ends are adjusted to the bed plate gap hour, the fly cutter straight line edge is to be umbilicate rotary body with the rotor rotational trajectory, bed plate cutting edge total length can not be coincide fully with it, causes knife edge clearance small in ends, and is broad in the middle.For cutting off the fragility raw material such as wheat straw, inhomogeneous knife edge clearance impact is little, but affects greatlyr on cutting off the stronger raw materials of toughness such as straw, Chinese alpine rush, causes the gap larger part to can't cut or cut off second-rate, can not satisfy the requirement of follow-up workshop section.

Summary of the invention

Technical problem to be solved in the utility model is, a kind of change in size scope that can reduce fit clearance between fly cutter and bed plate is provided, and improves whole vertically upper fly cutter and coordinates inhomogeneity chaffcutter rotor assembly with the bed plate edge of a knife.

Chaffcutter rotor assembly of the present utility model includes rotatable rotor and the fly cutter that is arranged on rotor, is distributed with many heavy knife faces longitudinally on the circumference of described rotor, and heavy knife face becomes 2-4 ° of angle with rotor cylinder bus, and fly cutter is arranged on heavy knife face; Fly cutter on each heavy knife face by separately independently two sections form, the radial position of the cutting edge straight line of two sections fly cuttves can independently be regulated separately.

The utility model will pass through the fly cutter of rotor in traditional structure, be decomposed into the shorter fly cutter of two segment length, the independent adjusting separately by two sections short fly cuttves, the gap fluctuation range that can on whole rotor length direction, fly cutter be coordinated with the bed plate edge of a knife reduces greatly, thereby obtains better shear effect.

Description of drawings

Fig. 1 is the cross-sectional structure schematic diagram that rotor assembly of the present utility model coordinates with bed plate;

Fig. 2 is that the A of Fig. 1 is to structural representation.

Embodiment

As shown in the figure, this chaffcutter rotor assembly includes rotatable rotor 1 and the fly cutter 2 that is arranged on rotor, be distributed with many heavy knife faces 3 longitudinally on the circumference of rotor 1, heavy knife face 3 is 2-4 ° with the angle α of rotor cylinder bus, and fly cutter 2 is arranged on heavy knife face 3; Fly cutter 2 on each heavy knife face by separately independently two sections form, the radial position of the cutting edge straight line of two sections fly cuttves 2 can independently be regulated separately, thereby can regulate respectively the fit clearance of itself and bed plate 4.

Claims (1)

1. chaffcutter rotor assembly, include rotatable rotor (1) and be arranged on fly cutter (2) on rotor, be distributed with many heavy knife faces (3) longitudinally on the circumference of described rotor, heavy knife face becomes 2-4 ° of angle with rotor cylinder bus, and fly cutter 2 is arranged on heavy knife face; It is characterized in that: the fly cutter (2) on each heavy knife face by separately independently two sections form, the radial position of the cutting edge straight line of two sections fly cuttves can independently be regulated separately.

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