RU2382542C1 - Device of prior threshing of grain mainly for seeds - Google Patents

Abstract

FIELD: agriculture.

SUBSTANCE: device of prior threshing of grain is located between a header and an oblique chamber of the combine harvester. Device of prior threshing contains a body, beater with a pin mechanism and its drive. On the beater surface between groups of pins there are working elements positioned with equal pitch and demountable. Each of the working elements is manufactured from rubberised material of trapezoid section. The rib of each working element is positioned in diametral plane of the beater.

EFFECT: reduction in seed damanging.

2 cl, 5 dwg

Description

The invention relates to agricultural machinery, namely to machines for harvesting grain crops.

The closest technical solution is a combine harvester, which includes a header, an inclined chamber, a device for pre-threshing grain with a sieve located below it, a screw, an elevator, a threshing machine, a straw walker, a stacker, a cleaning sieve and silos for receiving grain, respectively, from the device for preliminary threshing and threshing apparatus, moreover, a device for preliminary threshing of grain is installed between the header and the inclined chamber and is made in the form of two vertices arranged in two tiers hnikh and two lower rollers (RU No. 2202165, IPC A01D 41/00, 2003).

However, this device for pre-threshing grain has low technological reliability due to the winding of the grain mass on the rollers.

The essence of the claimed invention.

The problem to which the invention is directed is to improve the quality of threshed grain.

The technical result is the reduction of trauma to the grain.

The specified technical result is achieved by the fact that in a known combine harvester, including a header, an inclined chamber, a device for pre-threshing grain with a sieve located below it, a screw, an elevator, a thresher, a keyboard straw walker, a stacker, a cleaning sieve and silos for receiving grain, respectively, from the device for pre-threshing and threshing apparatus, according to the invention, a device for pre-threshing grain is installed between the header and the inclined chamber, which represents the th case, a beater with a finger mechanism and its drive, and working elements placed on the surface of the beater with equal steps between the groups of fingers with the possibility of dismantling, each of which is made of rubberized material of trapezoidal cross section, with the edge of each working element being placed in the diametrical plane of the beater, in addition, each working element by means of fastening is fixed on the bracket with an L-shaped profile.

Due to the fact that the device for preliminary threshing of grain is installed between the header and the inclined chamber and is made in the form of working rubberized elements placed on the surface of the beater, as well as with the possibility of deformation and movement of the grain mass between the beater and the bottom of the spacer, the above technical result is achieved.

The invention is illustrated by drawings.

Figure 1 shows a device for pre-threshing grain located between the header and the inclined chamber of the combine harvester, side view.

In Fig.2 - view A in Fig.1, a longitudinally-vertical section of a device for pre-threshing grain.

Figure 3 is a view In figure 2, a view of the device for pre-threshing grain from the side of the supply of bread mass.

In Fig.4 is a cross-section GG in Fig.3, a transverse vertical section of the beater spacers with a finger mechanism and the working elements of the device for pre-threshing grain.

In Fig.5 - place D in Fig.4, the pairing of the fastening of the working element for pre-threshing grain with the casing of the beater spacers.

The combine harvester (see Fig. 1) includes a header 1, an inclined chamber 2, a device for pre-threshing grain 3 with a sieve 4 located under it, a screw 5, an elevator 6, a threshing device 7, a key straw walker 8, a stacker 9, a cleaning sieve 10 and hoppers for receiving grain 11, 12, respectively, from the device for preliminary threshing and threshing apparatus.

A device for pre-threshing grain 3 is made in the form of a beater with a finger mechanism and its drive, and placed on the surface of the beater with equal pitch between the groups of fingers of the working elements (figure 2).

A device for pre-threshing grain 3 is installed between the header 1 and the inclined chamber 2. Under it there is a screw 5 for feeding untrained grains into the hopper 11 (Fig. 3).

A beater with a finger mechanism with working elements placed on its surface with the possibility of dismantling, each of which is made of rubberized material of trapezoidal cross section, while the edge of each working element is placed in the diametrical plane of the beater (Fig. 4).

Each working element by means of fastening is fixed on the bracket with an L-shaped profile (figure 5).

A device for pre-threshing grain works as follows.

When harvesting on the root, the stems of the plants are cut by the header 1 (see Fig. 1) and fed to the device for preliminary threshing of grain 3, which is installed between the header 1 and the inclined chamber 2.

When moving the grain mass between the beater and the sieve, due to the impact of the working elements placed on the beater, the connection between the grain and the spike is broken. In this case, partial threshing takes place and the most ripe and valuable grains are released, which, waking up through the sieve 4, are fed by a screw 5 and an elevator 6 into the hopper for collecting non-injured grain 11.

Bread mass by the working elements of the device for pre-threshing grain 3 and the fingers of the beater is fed into the inclined chamber 2 and then to the main threshing apparatus 7. Part of the threshed grain passes through the deck of the main threshing apparatus 7 and goes to the cleaning sieves 10, part together with straw is sent to keyboard straw walker 8. The grain and small heap separated on the straw walker are fed to the cleaning sieves 10. Grain after cleaning is fed to the hopper 12. Unmilled ears are fed to the hammer to an autonomous domolachivaya device. The straw from the straw walker and the floor are fed to the stacker 9. When filled, the stacker is unloaded.

A device for pre-threshing grain allows you to select uninjured grain from a common heap and collect it in a separate hopper for use in the future as seed.

Claims (2)

1. A device for pre-threshing grain, mainly for seed purposes, located between the header and the inclined chamber of the combine harvester and containing a housing, a beater with a finger mechanism and its drive, characterized in that on the surface of the beater with equal pitch between groups of fingers workers are placed with the possibility of dismantling elements, each of which is made of rubberized material of a trapezoidal section, with the rib of each working element being placed in the diametrical plane of the beater. 2. The device according to claim 1, characterized in that each working element by means of fastening is fixed on a bracket with an L-shaped profile.

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