RU199946U1 - DEVICE FOR MONITORING THE MASS OF GRAIN INTO THE HOPPER OF THE GRAIN COMBINE - Google Patents

Abstract

The invention relates to agricultural engineering and can be used to monitor the yield when harvesting grain crops by combine harvesters with scraper conveyors. The technical result of the claimed invention is the development of a device with increased discreteness of determining the mass of grain entering the hopper of the combine. The device contains a weighing platform 4 with a strain gauge 5, an electronic information processing unit 6 and a power source located in a single housing 1, which is attached to the chain 2 of the scraper conveyor of the combine harvester. The device provides the ability to improve the accuracy and detail of mapping the yield in different parts of the field. 1 wp f-ly, 3 dwg

Description

The invention relates to agricultural engineering and can be used to monitor the yield when harvesting grain crops by combine harvesters with scraper conveyors of the grain elevator.

A device for monitoring the filling level of a hopper for an agricultural product is known. The monitoring system includes a level sensor connected to the bunker to determine a specific reference level of an agricultural product in the bunker and generate a calibration indicator (see RF patent No. 2499381, IPC A01F 12/60, publ. 27.11.2013).

This device provides high accuracy of indications of the level of filling of the bunker, however, there is no possibility of determining the mass of the loaded grain. In addition, the device has a hard-to-reach installation location, which makes it difficult to maintain.

It is also known a device for information support of the grain harvesting process by a combine, which determines the dynamics of loading grain into the bunker of the combine on the basis of comparing the mass of incoming grain into the bunker with respect to two preset values, using strain gauges (see RF patent No. 2394418, IPC A01F 12/60, publ. 03.08 .2009).

The advantage of this device lies in the possibility of providing information to the driver of the vehicle about the completion of the process of loading the combine bunker with grain, as well as about the time until the end of loading.

The main disadvantages when using this device is that it has low accuracy, due to the fact that the load cells are installed in such a way that they cannot cover the entire surface on which the load is located.

Closest to the claimed device is a device for determining the mass of grain in the bunker of a combine harvester (see RF patent No. 2670945, IPC A01F 12/60, publ. 10/25/2018). The device contains a strain gauge, a device for determining the density of grain, made in the form of a pick-up equipped with a displacement drive. The movement drive is made in the form of an electric winch, on the cable of which a strain gauge is located. In addition, fill level sensors are placed on the grain tank frame.

The disadvantage of this device is the low discreteness of measuring the mass of grain, because the device allows to measure only the total mass of grain in the filled bunker, which does not provide the possibility of accurate mapping of the yield in different parts of the field.

The object of the invention is to provide the possibility of increasing the accuracy and detail of mapping the yield in different parts of the field.

The technical result of the claimed invention is the development of a device with increased discreteness of determining the mass of grain entering the hopper of the combine.

The specified technical result is achieved by the fact that the device for determining the mass of grain entering the bunker of a combine harvester, containing a strain gauge and an electronic data processing unit with a power supply, according to the claimed invention, the device is equipped with a weighing platform with a strain gauge installed on it, and the weighing platform with a strain gauge and an electronic data processing unit with a power supply are enclosed in a single housing, fixed on the chain of the scraper conveyor of the combine harvester.

The power source of the information processing unit contains a coil with a magnet installed in it for free movement.

The essence of the technical solution is illustrated by a drawing, where in FIG. 1 is a diagram of a device mounted on a scraper conveyor chain (front view);

in fig. 2 is a side view;

in fig. 3 is a schematic perspective view of a combine harvester.

A device for determining the mass of grain entering the bunker of a combine harvester contains a housing 1 mounted on a chain 2 of a scraper conveyor 3. In housing 1 there is a weighing platform 4 with a strain gauge 5, an electronic information processing unit 6 with a power source containing a coil 7 and installed with the possibility of free movement in it magnet 8.

The grain elevator scraper conveyor is designed to move the grain harvested by the machine from the auger to the harvester hopper. The principle of operation of scraper conveyors is the dragging of grain material along the chute by scrapers connected to a moving chain. Chain 2 of the scraper conveyor has special links on which the scrapers are attached with a certain pitch. It is proposed to install this device on at least one of such links.

The device operates as follows.

When passing the device for determining the mass of grain entering the bunker of the combine harvester, the lower part of the grain elevator of the combine, another portion of grain falls on it (as on all conveyor scrapers). The weighing platform 4 transfers the weight load of the grain on it to the strain gauge 5. For each revolution of the scraper conveyor, the device (like all conveyor scrapers) makes two turns by 180 °. After each flip of the device by 180 °, the magnet 8, which was previously in the lower part of the coil 7, is at the top. Under the action of gravity, the magnet 8 falls down, and, passing through the coil 7, generates electricity in it, which feeds the electronic unit 6 for processing information received from the strain gauge 5. This design of the power supply has the following advantages: autonomy and no need for periodic battery replacement.

The electronic unit 6 for processing information determines the mass of the grain on the weighing platform 4. Taking into account the total number of scrapers of the grain elevator conveyor of the combine, the electronic information processing unit 6 generates and transmits data on the total weight of the grain that entered the bunker of the combine harvester for each cycle of the conveyor. Information from the electronic unit 6 then enters the on-board computer of the combine harvester equipped with a satellite receiver of geographic coordinates, which allows creating detailed maps of the yield of individual sections of the field.

The technical and economic efficiency of the device consists in increasing the discreteness of measuring the mass of grain entering the bunker of the combine harvester during its operation, which makes it possible to increase the accuracy and information content of the yield maps compiled on the basis of these data. The use of yield maps in agricultural production allows you to identify the unevenness of the yield within the field and accurately determine the weak areas of the field, as well as investigate the reasons for the decline in yield.

Claims (2)

1. A device for determining the mass of grain entering the bunker of a combine harvester, containing a strain gauge and an information processing unit with a power source, characterized in that the device is equipped with a weighing platform with a strain gauge installed on it, and the weighing platform with a strain gauge and the information processing unit are enclosed in a single a body attached to the chain of the scraper conveyor of a combine harvester. 2. The device according to claim. 1, characterized in that the power source contains a coil with a magnet installed therein with the possibility of free movement.

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