RU216132U1 - DEVICE FOR INTENSIFICATION OF GRAIN SEPARATION FROM A ROUGH HEAP - Google Patents

Abstract

The utility model relates to agricultural engineering and is intended for use in combine harvesters, including a straw walker for separating grain from a coarse heap. The device contains a straw walker, consisting of keys fixed on the driven and driving crankshafts, rotating in ball bearings, and an apron hinged on the sidewalls of the frame, consisting of a tape made of rubberized fabric, a shield and a plate made of sheet metal. At the same time, the tape, the shield and the plate are interconnected by a riveted connection, the supports installed on the inner surfaces of the sidewalls of the frame are introduced, and the lever fixing the apron in the supports, while the axis installed in the upper part of the apron shield is rigidly attached to the shield and pivotally mounted on supports, and the supports are rigidly fixed on the inner sidewalls of the frame and are mirrored relative to each other. One of the supports is made in the form of a cylindrical bushing, and the second one is in the form of a bent profile with a cylindrical cutout. One end of the apron axis with its outer surface is aligned with the inner hole in the support, and the other end of the apron axis rests with the outer surface on a cylindrical cutout in the support. The lever is made of sheet metal bent to form two support surfaces located in mutually perpendicular planes, wherein one of the support surfaces is used to fix the apron axis on the support with a cylindrical cutout, and the other support surface is to fix the lever on the frame. The device provides an increase in the productivity of the combine harvester, an increase in the main working time by reducing the time for mounting and dismantling the apron. 5 ill.

Description

The claimed utility model relates to agricultural engineering and is intended for use in combine harvesters, including a straw walker for separating grain from a coarse heap.

A device is known for intensifying the separation of grain from a coarse heap in the John Deere T670 combine harvester [website: https://partscatalog.deere.com/jdrc/sidebyside/equipment/141928/referrer/navigation/pgId/568147807 (accessed 01.04 .2022)], which includes a straw walker, consisting of keys mounted on the front and rear crankshafts, rotating on ball bearings, and an apron hinged on the sidewalls of the frame. When harvesting some crops under certain conditions, the apron is dismantled. To dismantle the apron, it is necessary to unlock it from both sides of the frame by unscrewing the bolted connection from the pipe on each side, and pass the apron through the pipe.

A device is known for intensifying the separation of grain from a coarse heap in a New Holland CX 8.80 combine harvester [website: https://www.mycnhistore.com/us/en/newhollandag/harvesting-equipment/conventional-combines/nabj21con309cxcombines/combine-track -tier-5-nafta/separation/straw-walker-rubber-canvas/cn/F013559E-4535-4ABA-9006-BA2B23E8CC53?modelCode=76A0AF4D-90F0-4B75-B93E-2F899C3FBFD0 (accessed 04/01/2022)], includes a straw walker, consisting of keys mounted on the front and rear crankshafts, rotating in ball bearings, and an apron hinged to the roof of the frame. To replace the apron, it is necessary to unlock the pipe fastening clamps on both sides by unscrewing the bolted connections on each side.

Известно устройство для интенсификации сепарации зерна из грубого вороха в зерноуборочном комбайне «CLAAS TUCANO 450» [сайт: http://partsdoc-public.claas.com/ipp/jsp/main.jsp?sig=30F27B4596F388D4E3F8CC0729F1170543CDE0B153C6EF7 ECDEBD585B65A84F06C3D1CE015E707BC004D7CFE9B4AD076F879B2576E0F6358F99C797E 186E5E76&doAction=catalogAssy&k_vari=&k_ver= &image=-2&k_lfdnr=&nodeId=43 (date of access - 04/01/2022)], which includes a straw walker, consisting of keys mounted on the front and rear crankshafts, rotating in ball bearings, an apron hinged on the sidewalls of the frame, and a mechanism for changing the position of the apron when harvesting various crops. When converting to harvesting corn and rice, the apron for harvesting grain crops is dismantled, and the apron for harvesting corn and rice is installed. To replace the apron, it is necessary to unlock the mechanism for changing the position of the apron on both sides by unscrewing the bolted connections on each side.

The disadvantage of the above devices is the high complexity of replacing the apron on the combine, depending on the crops being harvested, which leads to long downtime of the combine harvester, a reduction in the main working time, quantitative and qualitative losses and, as a result, to a decrease in the productivity of the combine harvester.

Closest to the claimed utility model is a device for intensifying the separation of grain from a coarse heap in a combine harvester "ACROS" [Combine harvester self-propelled PCM-142 "ACROS". Manual. - Rostov-on-Don: OOO KZ Rostselmash. - 2016], which includes a straw walker, consisting of keys mounted on the driven and driving crankshafts, rotating in ball bearings, and an apron hinged on the sidewalls of the frame and consisting of a tape made of rubberized fabric, a shield and a plate made from sheet metal, while the tape, shield and plate are interconnected by a riveted joint. When converting to harvesting corn, the apron for harvesting grain crops is dismantled, and the apron for harvesting corn is installed. To replace the apron, it is necessary to unfasten the axis of the apron fastening on the sidewalls of the frame by unscrewing the nuts on one side and pass the apron through the axis.

The disadvantage of this device is the high complexity of replacing (dismantling) the apron on the combine and its subsequent installation, depending on the crops being harvested, which leads to a reduction in the main working time, quantitative and qualitative losses, to long downtime of the combine harvester and, as a result, to a decrease in productivity. grain harvester.

The objective of the claimed utility model is to increase the productivity of the combine harvester, increase the main working time by reducing the time for mounting and dismantling the apron.

To achieve the specified technical result in the claimed utility model, containing a straw walker, consisting of keys mounted on the driven and driving crankshafts rotating in ball bearings, and an apron hinged on the sidewalls of the frame, consisting of a tape made of rubberized fabric, a shield and plates made of sheet metal, while the tape, the shield and the plate are interconnected by a riveted connection, the supports installed on the inner surfaces of the sidewalls of the frame are introduced, and the lever fixing the apron in the supports, while the axis installed in the upper part of the apron shield, rigidly attached to the shield and pivotally mounted on the supports, the supports being rigidly fixed on the inner sidewalls of the frame and mirrored to each other, while one of the supports is made in the form of a cylindrical sleeve, and the second is in the form of a bent profile with a cylindrical cutout. One end of the apron axis with its outer surface is aligned with the inner hole in the support, and the other end of the apron axis rests on the cylindrical cutout in the support with its outer surface. The lever is made of sheet metal bent to form two support surfaces located in mutually perpendicular planes, while one of the support surfaces serves to fix the apron axis on a support with a cylindrical cutout, and the other support surface - to fix the lever on the frame. On the supporting surface of the lever for fixing on the support, a cylindrical cutout is made, the diameter being equal to the diameter of the outer surface of the axis. On the support surface of the lever for fixing on the frame, a rectangular groove is made parallel to the fold line, which allows the lever to be moved in the direction of fixing the axis of the apron. The lever is fixed on the frame with a bolted connection.

Thanks to these innovations, an increase in the main working time is achieved by reducing the time for mounting and dismantling the apron and, as a result, increasing the productivity of the combine harvester.

The claimed device is illustrated by drawings:

- fig. 1 - general view of a straw walker with an apron, in section;

- fig. 2 - general view of a straw walker with an apron, in isometry (right side);

- fig. 3 - general view of a straw walker with an apron, in isometry (left side);

- fig. 4 - design of the mechanism for fixing the lever;

- fig. 5 - lever design.

The claimed utility model contains the following structural elements (see Fig. 1 - 5): 1 - frame; 2 - straw walker; 3 - keys; 4 - driven crankshaft; 5 - leading crankshaft; 6 - apron; 7 - axis; 8 - shield; 9 - plate; 10 - tape; 11 - rivets; 12, 13 - supports; 14 - lever; 15 - bolt; 16 - nut; 17 - washer, - at the same time, the straw walker 2 is a prefabricated structure pivotally mounted on the sidewalls of the frame 1, and includes keys 3 fixed on the driven and driving crankshafts 4, 5. The apron 6 is pivotally suspended on supports 12, 13, rigidly welded to the inner sidewalls of the frame 1, and fixed by a lever 14 using a bolt 15, a nut 16 and a washer 17. The apron 6 includes a shield 8, rigidly welded to the axis 7, a plate 9 and a tape 10, fixed on the shield 8 with the help of exhaust rivets 11.

The inventive device operates as follows (see Fig. 1-5). To replace the apron 6, it is necessary to dismantle the lever 14 through the provided technological window in the frame 1, having previously unscrewed the bolt 15, remove the apron 6 in turn from the supports 12, 13 located on the inner sidewalls of the frame 1 and install another apron 6 in reverse order (when converting to cleaning corn).

The technical result consists in increasing the main working time by reducing the time for mounting and dismantling the apron and, as a result, in increasing the productivity of the combine harvester.

Claims (1)

A device for intensifying the separation of grain from a coarse heap, containing a straw walker, consisting of keys mounted on the driven and driving crankshafts, rotating in ball bearings, and an apron hinged on the sidewalls of the frame, consisting of a tape made of rubberized fabric, a shield and plates made of sheet metal, while the tape, the shield and the plate are interconnected by a riveted joint, characterized in that it contains supports installed on the inner surfaces of the sidewalls of the frame, and a lever that fixes the apron in the supports, while the axis is installed in the upper part of the apron shield, is rigidly attached to the shield and pivotally mounted on supports, and the supports are rigidly fixed on the inner sidewalls of the frame and are mirrored relative to each other, one of the supports is made in the form of a cylindrical sleeve, and the second is in the form of a bent profile with a cylindrical cutout, one end of the axis of the apron is aligned with the inner surface of the outer surface hole in the support, and the other end of the axis of the apron rests on the outer surface of the cylindrical cutout in the support, the lever is made of sheet metal bent, with the formation of two support surfaces located in mutually perpendicular planes, while one of the support surfaces serves to fix the axis of the apron on the support with a cylindrical cutout, and another supporting surface for fixing the lever on the frame.

Images