RU2259034C1 - Active self-cleaning crop lifter - Google Patents

Abstract

FIELD: agriculture, in particular, crop lifting devices used in harvesters for cereal and leguminous crops.

SUBSTANCE: crop lifter has screws-crop lifters arranged in row forward of header. Each screw-crop lifter comprises conical part and cylindrical part. Cutting knives are positioned on cylindrical part of screw-crop lifter for radial reciprocation relative to its axis.

EFFECT: increased efficiency by grinding of cut plant mass accumulated on body of screw-crop lifter and improved mowing conditions in the process of harvesting.

2 cl, 1 dwg

Description

The invention relates to stem-lifting devices of reapers for harvesting grain and leguminous crops and can be used in agriculture.

A device is known for pulling and feeding stalks of grain crops in a combine harvester (Japanese application No. 09082291, class A 01 D 57/22 of 1999). It contains chain-finger conveyors enclosed in casings, which are mounted in a row in front of the cutting apparatus of the header with some inclination back from the frontal plane. The fingers of the working branches of these conveyors, the movement of which is directed up and back, are located outside the casings and are oriented to the right or left. These fingers lift the stems of drooping and lodged plants, and also support the stems during the cut. When moving down and forward, the fingers are inside the housings, where they are removed using a pull mechanism and guide tracks of the housings. The device is equipped with additional casings with chain-finger conveyors, the fingers of which, when moving upward, go beyond the casings forward. These fingers extend the entangled stems, arranging them before cutting.

Such a stem lifter is structurally complex, metal-intensive, requires very precise manufacturing, has a high cost and does not provide reliable operation in the presence of creeping climbing plants.

A device is known that serves as an active divider in a sugar cane harvesting machine, which is closest to the claimed one and adopted as a prototype (Japanese application No. 50-39008, class A 01 D 45/10 from 1975). It contains divisors, stodlopodemniki, made in the form of screws installed in a row in front of the cutting apparatus with some inclination back from the frontal plane. These screws separate plants that are intertwined during growth, and also raise the stems of drooping and lodged plants, tilted to the right and left.

Such a device has a simpler design. At the same time, when working with plants of lower height, such as cereals and leguminous crops, it poorly raises and holds plants tilted forward, because in the space between two adjacent screws these plants do not rise, and the presence of long creeping creeping plants further worsens the process of mowing grain and leguminous crops and leads to increased grain losses.

The technical task of the invention is to prevent winding of the mowed mass of plants on the screws, which will reduce grain loss behind the header and reduce the number of stops of the harvesting equipment to clean the rotating organs of the header from the mass of plants that has accumulated on them.

The problem is solved in that in the known active self-cleaning auger-stem lifter containing augers arranged in a row in front of the header, according to the invention they are equipped with cutting knives that make it possible to grind the crop mass that has accumulated on the auger body and prevent further winding it on the rotating nodes of the header.

The presented drawing schematically shows a header with an active self-cleaning auger-stem lifter - longitudinal section.

The header includes a housing 1, a cutting apparatus 2, a cross auger 3, augers-stem lifters 4, radial cutting knives 5, an axial cutting knife 6, a drive mechanism 7, an axis of the drive mechanism 8, a cutting part of a knife 9, a cutting edge 10, a rotary matrix 11.

Active self-cleaning auger-stem lifter works as follows.

When the combine harvester moves across the field, the augers 4 are brought into rotation from the transmission of the header. In this case, the augers-stem lifters 4 raise the stems of the harvested plants, support them and bring them to the cutting apparatus 2. Cut plants are transported by the transverse screw 3 to the receiving chamber of the header. Due to the presence of a fixed axis 8 of the drive mechanism 7, the radial cutting knives 5 make a reciprocating motion in the radial direction relative to the axis of the auger-stem lifter while rotating the auger-stem lifter, and the axial cutting knife 6 receives a reciprocating motion in the axial direction relative to the axis of the auger-lifter when the auger-stem lifter 4 rotates, the cut plants that accumulate on the conical and cylindrical parts of the auger-stem lifter 4 are captured and chopped when cutting parts of the knife 9 through the corresponding cutting edges 10 and the rotary matrix 11.

The use of this active self-cleaning stalk lifter allows you to completely exclude the winding of creeping climbing long plants when harvesting dead grain and leguminous crops.

Claims (2)

1. An active self-cleaning stem lifter containing screw stem lifters installed in a row in front of the header, characterized in that the screw stem lifter consists of a cone and cylindrical parts, while on the cylindrical part of the screw stem lifter mounted with the possibility of reciprocating motion in the radial direction relative to the axis of the screw-stem lifter radial cutting knives for grinding accumulated on the cylindrical part of the screw-stem lifter plant mass. 2. The active self-cleaning stem lifter according to claim 1, characterized in that on the top of the conical part of the screw-stem lifter is mounted with the possibility of reciprocating movement in the axial direction relative to the axis of the screw-stem lifter axial cutting knife for grinding accumulated at the top of the conical part of the screw-stem lifter masses.