RU2258350C2 - Discharge pipeline of root harvesting combine - Google Patents

Abstract

FIELD: agricultural engineering.

SUBSTANCE: pipeline has rotary upper part and immovable base. Rotary upper part is composed of two sections joined across detachment plane and connected with one another. Upper section is made hinged. Tubular insert is disposed within pipeline between base and rotary part. Upper base of insert is positioned higher than section detachment plane. Front and side walls of insert are arranged at acute angles with respect to walls of hinged section and facing movable plant mass.

EFFECT: provision for forming of ground mass into dense compact mass and reduced power consumption for transportation thereof.

5 cl, 3 dwg

Description

The invention relates to agricultural machinery, in particular to forage harvesters.

Known discharge pipe of the forage harvester (ed. Certificate of the USSR No. 1667693, IPC A 01 D 43/08) containing an inclined fixed base and a rotatable upper part, joined together along the plane of the connector, and the plane of the connector of the rotary part and the fixed base is located on the bisector the angle formed by the horizontal plane and the plane normal to the front wall of the base, while inside this angle in the front and rear walls of the base there are bends perpendicular to the plane of the connector. This design of the pipeline provides optimal dimensions for the height of the free end of the pipeline at all operating positions. However, the process of transporting the crushed mass is unstable due to the random collision of the mass flows reflected from the walls of the base and the rotary part of the pipeline. Such pipelines have not found practical application.

A discharge pipe is known (certificate for utility model No. 10989, IPC A 01 D 43/08), in which, in order to reduce the loss of speed of the crushed mass from friction against the pipe wall, the front wall of the deflector is made according to a certain curve. However, the proposed technical solution does not provide a reliable flow of the transportation process of the crushed mass, because its composition, size and weight characteristics, humidity, etc. have a large scatter.

Known discharge pipe of the forage harvester, comprising a housing with a flow accelerator installed therein (ed. Certificate of the USSR No. 1641216, IPC A 01 D 43/08). The flow accelerator significantly improves the transportation of the pulverized mass. The disadvantage of this pipeline is the increased energy intensity of product transportation due to the fact that the crushed mass is centrifugally pressed against the walls of the pipeline and additional energy is required to overcome the friction forces to move it.

Known discharge pipe of the forage harvester (ed. Certificate. USSR No. 1638823, IPC A 01 D 43/08), including a fixed base and a rotatable upper part, consisting of two articulated sections docked along the plane of the connector. The disadvantage of this discharge pipe is an unstable process of loading the crushed mass into the vehicle. When moving through the pipeline, the crushed mass, overcoming the friction of the material on its walls, quickly loses its original speed, until it stops and falls under the action of gravity, which creates a counterflow to the main direction of movement and leads to local or complete blockage of the pipeline, as well as to a sharp decrease the range of mass ejection from the deflector and, as a consequence, to losses when loading the vehicle.

The purpose of the invention is to reduce energy intensity and ensure the stability of the process of transporting the crushed mass through the pipeline, increasing its service life, as well as reducing weight loss when loading into a vehicle.

This goal is achieved by the fact that inside the well-known pipeline of the forage harvester containing a fixed base and a rotatable upper part, consisting of two sections pivotally joined together, the upper part of which is hinged, a tubular spacer is placed between the fixed base and the rotary part, the upper the base of which is located above the sectional plane of the sections, and the front and side walls are made in relation to the walls of the hinged section at sharp angles, towards the movement of the mass.

The front and side walls of the spacer are made in the form of a diverging flat wedge, and the rear wall is in the form of a tray.

The edge of the lower base of the spacer is made in the form of a circle.

The spacer is fixed on the lower section of the rotary part of the pipeline.

The spacer is fixed with the possibility of dismantling.

The angle between the walls of the spacer and the walls of the hinged section is 5 ... 8 °.

Figure 1 shows the discharge pipe, side view (section), figure 2 - view A in figure 1, figure 3 - view B in figure 2.

The discharge pipe includes a fixed base 1 and a rotatable upper part 2, which consists of two sections 3 and 4, while the upper section 3 is hinged. Sections 3 and 4 are connected by a hinge 5 and are joined along the plane of the connector 6. Inside the pipeline between the base 1 and the rotary part 2 there is a tubular spacer 7, the upper base 8 of which is located above the plane of the connector 6 of sections 3 and 4. The front wall 9 and the side walls 10 of the spacer 7 are made in the form of a diverging wedge 11, and the rear wall 12 is in the form of a tray 13. The angle α between the walls 9 and 10 of the spacer 7 and the corresponding walls of the hinged section 3 is within 5 ... 8 ° and is directed towards the movement of the mass 14. The spacer 7 secured to section 4 the rotary part 2 of the pipeline, and the edge of the lower base 15 of the spacer 7 is made in the form of a circle.

The device operates as follows.

The plant mass, crushed in a grinding apparatus (not shown), is fed through the channel of the fixed base 1 to the rotary part 2 of the pipeline, where it meets the walls of the spacer 7, which change the direction of movement of the mass, reducing the angle of the mass with the walls of the pipeline to 5 ... 8 °, and the rear wall 12 of the spacer 7, made in the form of a tray 13, contributes to the formation of crushed mass in a dense compact stream, which reduces the energy consumption of its transportation by reducing the loss of speed from friction against the walls of the pipe water. In addition, the wear of the walls of the pipeline is reduced, which leads to an increase in its service life. The high speed of the mass when exiting the pipeline reduces its loss when loading into vehicles, including from crosswinds. In addition, the overlapping by the upper base 8 of the spacer 7 of the connector plane 6 of sections 3 and 4 allows you to adjust the height of the unloading mass within 3 ... 4 m by lowering or lifting section 3 with a hydraulic cylinder (not shown), which also helps to reduce weight loss during its loading into vehicles of various heights.

Claims (5)

1. The discharge pipe of the forage harvester, including a fixed base and a rotatable upper part, consisting of two sections pivotally connected to each other, the upper part of which is hinged, characterized in that a tubular spacer is placed inside the pipeline between the fixed base and the rotary part, the upper base of which is located above the plane of the connector sections, and the front and side walls are made in relation to the walls of the hinged section at acute angles directed avstrechu movement mass. 2. The discharge pipe according to claim 1, characterized in that the front and side walls of the spacer are made in the form of a diverging flat wedge, and the rear wall is in the form of a tray. 3. The discharge pipe according to claim 1, characterized in that the edge of the lower base of the spacer is made in the form of a circle. 4. The discharge pipe according to any one of claims 1 to 3, characterized in that the spacer is fixed to the lower section of the rotary part of the pipeline. 5. The discharge pipe according to claim 1, characterized in that the angles between the walls of the spacer and the walls of the hinged section are 5 ... 8 ° C.

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