RU116009U1 - SCREW DISTRIBUTION TRANSPORTER OF A STAND-ALONE HOUSING MACHINE - Google Patents

Abstract

1. Auger distribution conveyor of an autonomous threshing device of a thresher of a combine harvester, containing an auger installed across the thresher and partially located in the housing of a threshing device fixed to a return elevator, the auger being installed parallel to the rotor of the threshing device with associated rotation to it, and a casing in which auger and which in the area between the sides of the thresher is equipped with a window facing the entrance to the thresher and formed by an upper straight edge and a lower edge made to ensure that the opening of the window increases in the direction of movement of the processed product, characterized in that on the screw shaft in the area where the window is located in its the casing is installed, between separate adjacent coils, strips so that the height of each subsequent strip in the direction of movement of the transported product is greater than the previous one, and the heights of the strips, for example, linearly depend on the distance of their location to the sidewall of the hammer or the closest to the autonomous threshing device. ! 2. The screw distribution conveyor according to claim 1, characterized in that the strips are flat and mounted on the screw shaft parallel to the shaft axis. ! 3. Auger distribution conveyor according to any one of claims 1 and 2, characterized in that some of the strips are made of trapezoidal shape, installed radially relative to the axis of rotation of the screw, and the upper edge of these strips is inclined to the axis of the screw in accordance with the linear dependence of the heights of the strips on their location along the length of the screw. ! 4. Screw distribution conveyor according to claim 1, characterized in that the strips on the shaft

Description

The inventive utility model relates to the field of agricultural engineering, mainly to the thresher of combine harvesters. The thresher of combine harvesters equipped with an autonomous domolachivym device and devices for distributing the product processed by the domolachivym product across the width of the grind in the area of wind-sieve cleaning are widely known. Moreover, as a rule, the throwing of the crushed product into the thresher body is carried out either by the rotor of the grinding machine itself, or by an additional thrower fed by conveyor devices of a screw or elevator type. For example, in CHALLENGER 654 and 658 combines (AGCO A / C Operator's Manual, publication date October 2007, Dronningborg All 2, DK-8900 Randers, publication No. RU D3160117M10, ed.1, p.227, Fig. 36 , 37) the threshing of the threshed product into the thresher of the combine harvester is carried out directly by the rotor of the moulder.

Threshing of the product in the harvesters of the 8000 series of the company; NEW HOLLAND is carried out by the rotor of an autonomous pounding device located at the bottom of the thresher, then the threshed product is fed by a screw conveyor to the thrower, which is installed in the casing at the end of the conveyor screw, and is thrown into the thresher by it (Operator's manual, CX 8030-8090, p.3 -8. - Print No. 84131026, 3rd edition, Russian 07/08, NEW HOLLAND AGRICULTURE, CNH BELGIUM, NV, Leon Claeystraadt 3A, B-8210 ZEDELGEM).

Designs of the pounding device and examples of throwing the threshed product into the thresher are also disclosed in US Patent (United States Patent No. 4b968b285 Nov, 6,1990).

A disadvantage of the known analogues is the significant uneven distribution of the product threshed in a stand-alone moulder over the width of the sieve cleaning, which leads to an increase in grain losses behind it. This unevenness is exacerbated by the difference in the properties of harvested crops and the state of the agricultural background.

Closest to the claimed utility model is a device used in threshers of domestic grain harvesters (A.F. Morozov. Combine harvesters. - M .: AGROPROMIZDAT, 1991. - S.78-80, 86-89). This device contains a stand-alone milling device with a rotor and deck mounted in its housing, mounted on the spike elevator of the combine thresher, and a screw distribution conveyor with a screw partially placed in the housing of the milling machine parallel to the axis of its rotor and with associated rotation to it, and part of the screw placed across the thresher inside it is equipped with a casing with a window facing the entrance to the thresher and formed by an upper rectilinear face and a lower face, made with ensuring arastaniya opening windows in the moving direction of the processed product. The disadvantage of this device is a noticeable displacement of the product along the auger conveyor casing towards the end of the conveyor with an increase in the friction coefficient of the product on the surface of the auger turns, for example, with an increase in the moisture content of the product, resulting in an increase in the unevenness of product flow through the window in the auger casing to the shaking board and, therefore to an increase in grain losses due to the harvester cleaning.

The objective of the claimed utility model is to improve the uniformity of the distribution of the product processed in an autonomous domolachivy device across the width of the grind by using an additional method of dispensing the spilling of this product into the window of the auger casing along its length in automatic mode when the coefficient of friction of the product changes, including depending from his moisture. The technical result consists in reducing grain losses due to wind-sieve cleaning of the thresher of a combine harvester by increasing the uniformity of the distribution across the width of cleaning of the product treated with an autonomous domolachi device when harvesting crops under changing conditions of the agricultural background.

This result is achieved by the fact that on the shaft of the screw part of the screw distribution conveyor located inside the combine thresher the straps are installed between separate adjacent turns of the screw screw so that the height of each subsequent strap in the direction of movement of the transported product is greater than the previous one, and the height of the straps depends on the distance of their location to the sidewalls of the thresher closest to the stand-alone moulder, for example, linearly.

The strips are flat and mounted on the screw shaft parallel to its axis.

Some of the strips are trapezoidal, mounted on the screw shaft radially relative to the rotation of its axis, and the upper face of these bars is inclined to the axis of the screw in accordance with the linear dependence of the height of the bars on their location along the length of the screw.

The slats on the auger shaft are angled to each other.

Separate planks are installed with the overlapping of their location along the length of the screw, provided that they are angularly displaced relative to each other.

The slats on the auger shaft are located along its length and at an angle to each other, while minimizing the static unbalance of the auger.

Planks and / or parts thereof are removable.

The claimed utility model is illustrated by the following drawings:

figure 1 is a side view of the thresher of a combine harvester,

figure 2 - remote element A in figure 1,

figure 3 is a view along arrow B in figure 2,

figure 4-section bb in figure 3.

The thresher of the combine harvester contains a frame 1 (Fig. 1), between the sides 2 of which there is a threshing drum 3 with a concave 4, at the end of which a finger grate 5, an intermediate beater 6, a tangential rotor 7 with deck 8 are installed, a finger grate is installed on the output part of the deck 9 (Figs. 1, 4), upper 10 (Fig. 4) and lower 11 baffle plates, bumper beater 12 (Fig. 1), straw walker 13, shaking board 14, cleaning with upper sieve 15 and pitched flap 16, lower sieve a mill including a lower sieve 17, a tray 18 for moving grain and a pallet 19 to move the product. Partially in the frame of the thresher placed grain 20 (figure 1) and spike 21 augers. The spike auger is connected via a neck to the lower receiving window of the spike scraper elevator 22 (FIGS. 1, 2) located outside the thresher frame. To the upper exhaust opening of this elevator is connected an autonomous domolachivay device 23 (Fig. 1, 2, 3), inside the housing 24 of which a rotor 25 (Fig. 1, 2) with blades 26 (Fig. 1, 2, 3) pivotally mounted on it is placed ) and tooth deck 27 (Fig.1,2). Partially in this housing there is a screw 28 (FIGS. 2, 3, 4) of the screw distribution conveyor 29 (FIGS. 1, 2, 3). This screw is installed across the thresher parallel to the axis of the rotor 25 and has a passing rotation with it. A cylindrical neck 30 (Fig. 3) is installed between the housing of the autonomous punching device 24 and the sidewall 2 of the threshing frame 1 (Fig. 3), inside which the screw 28 passes. Between the sides of the thresher 2 there is a screw casing 32 (Figs. 3, 4), which is docked with the neck 30 so that unimpeded movement of the product from the neck to the casing of the screw. The screw casing is not fully or partially closed with the formation along the axis of the screw of the window facing the entrance to the thresher. The window is formed by the upper rectilinear face 33 (Fig. 3) and the lower face 34, the lower face on the casing being positioned so that the opening of the window in the direction of product movement along the casing increases. With a cylindrical shape of the casing, the edge of the lower face forms a helical line on the casing. A flexible apron 36 (figures 1, 2, 4) is suspended from the auger housing across the thresher. On the shaft of the screw 31 (Figs. 3, 4) on the window location portion in its casing, strips 35 (Figs. 3, 4) are installed between separate adjacent adjacent turns of the screw of the screw, the height of the next in the direction of product movement along the casing of the screw of the bar is larger than the previous the heights of these strips, for example, linearly depend on the distance of their location to the sidewall 2 (Fig. 1) of the thresher frame located closer to the autonomous domolachivayuschey device 23 (Figs. 1, 2, 3).

The straps 35 (Fig.3, 4) are made flat, mounted on the screw shaft parallel to its axis and are located radially relative to its axis of rotation. With this design, some planks can have a trapezoidal shape, the upper face of which is inclined to the axis of the screw at an angle that provides a linear dependence of the height of the planks on their location along the length of the screw. In this case, the upper edges of the faces of the strips mounted on the screw shaft at an angle to each other will be located on an imaginary conical surface formed by a straight line that displays this linear dependence of the height of the strips on their location along the length of the screw.

Separate planks can be installed with overlapping their location on the screw shaft, but with a mandatory angular displacement relative to each other.

The slats on the auger shaft are located along its length and at an angle to each other to ensure the least possible static imbalance of the auger.

Some planks can be made removable, and when the planks are composite, their components can be made removable.

The claimed utility model described above as an embodiment of its device works as follows: the product entering the thresher of the combine harvester from the adapters located in front of the thresher is fed to the threshing drum 3 (Fig. 1) and pulled along the drum 4 by grinding the grains from spikelets and partially separating them through the concave, together with unfrozen spikelets and their parts. The product processed by the drum is removed from it by the intermediate beater 6 and sent along the finger grate 5 to the tangential rotor 7, which pulls the product along deck 8, further grinding the grain from spikelets not threshed by the drum and their further separation of grain and unfrozen spikelets and their parts through deck 8. This pile is removed from the tangential rotor 7 by a bumper beater 12 and sent to the straw walker 13 (figure 1, 4) along the finger grate 9 (figure 1), where there is a further separation of grain, not threshed ov and their parts from the heap with their subsequent transportation and dumping on the shaking board 14, on the working surface of which grains, unfrozen spikelets and their parts that have passed through the concave 4 (Fig. 1), deck 8 and finger lattices 5 (Fig. 1) and 8 (figures 1, 4). At the same time, the upper reflective shield 10 (Fig. 4) does not allow the grains flying out of the deck holes in the direction of the straw walker to fly far above the straw walker, otherwise the grain loss behind it will increase, since the path length of such grains along the separating surface of the straw walker will be reduced. Similarly, the apron 36 affects the grains, which are directly or as a result of reflection from the shaking board sent to the side of cleaning the thresher. From the shaking board 14 (Fig. 1), this heap enters the upper sieve 15 for cleaning, where it is subjected to further processing, as a result of which the grains, part of small unfinished spikelets and their parts fall onto the lower sieve 17, and larger ones pass through the upper sieve at the end it, due to the appropriate adjustment of the upper sieve, and enter the opening between the lower sieve 18 and the pallet 20 and the pitched flap 16, which they are sent to the same opening. Small spikelets and their parts are transported along the lower sieve and also fall into the opening between this sieve and the pallet. All the product received in the pallet, due to its oscillatory movement together with the lower sieve mill, moves to the spike screw 21, which in turn feeds this product into the receiving window of the spike elevator 22 (Figs. 1, 2). The grain from the lower sieve enters the pallet 18 oscillating together with the lower sieve mill (Fig. 1), which directs it to the grain auger 20 for its further entry into the grain hopper. The spike elevator 22 (FIGS. 1, 2) transports with its scrapers a pile coming from the spike auger to the discharge window, through which it is thrown from above into the housing 24 (FIGS. 1, 2, 3) of an autonomous tacking device directly onto the blade rotor 25 (FIG. 12). Due to the fact that the linear speed of the rotor is higher than the linear speed of the elevator scrapers, the incoming heap is stretched by the rotor into a thin layer, which is then pulled along the tooth deck with the rotor blades 26 (1, 2, 3) of the rotor with a gap to it, providing the necessary grinding of the remaining grain in spikelets and their parts. These blades, due to their hinge mounting on the rotor with the provision of a given moment of their breaking, when stones or other foreign objects get in, deviate from their working position, letting them through, and automatically return to their working position, which significantly increases the survivability of this device. The grinded product enters the plot of the screw 28 (Fig. 2, 3, 4) of the screw distribution conveyor 29 (Fig. 1, 2, 3) located in the housing 24 (Fig. 1, 2, 3) of the grinding machine and rotating along with the rotor 25 (figure 1, 2), tangentially to it, which increases the reliability of the transfer of the product from the rotor to the screw. Next, the product is transported by a screw through the neck 30 (Fig.2, 3) to the casing of the screw 32 (Fig.3, 4) located inside the combine thresher. Since the cylindrical casing of the auger has a window directed towards the entrance to the thresher, and the edge of the lower edge of this window is made along a helix that ensures uniform opening of the window along the movement of the product with the screw, and the screw itself rotates so that its lower part moves away from the window, then the product rises along the back wall of the casing due to friction between the turns of the screw and the product and moves along it in this position, circulating in the moving layer due to the shedding of the particles of this layer located on top. At the same time, part of the layer moving in front of the turn gradually and continuously wakes up through the window of the screw casing due to its gradual opening in the lower part of the casing. With an increase in the coefficient of friction between the surfaces of the screw turns and the product, for example, by increasing the moisture content of the product, the product rises higher on the back wall and therefore wakes up less intensively through the window and, therefore, moves in a larger volume along the casing, i.e. with a larger layer thickness and at a farther distance, due to which the uniformity of the distribution of the product across the width of the thresher deteriorates. To reduce the negative effect of increasing the coefficient of friction of the product on the uniform distribution of this product across the width of the grinder, which leads to an increase in grain loss during cleaning, strips are installed on the screw shaft between separate adjacent turns, the height of which, for example, linearly depends on the distance of their location to the sidewall of the grind frame closest to the standalone punching device. A specific design and arrangement of the strips in combination with the intensity of the opening of the window in the screw casing is possible only with the practical selection of such a combination depending on the design of the screw distribution conveyor, the grinding machine and the properties of the processed product .. Change the process of moving and spilling the product into the window of the screw casing due to changes in the device consists in the additional selection of the strips of the excessively accumulated part of the THE PRODUCT, and throwing it over the screw shaft in its housing window. When transporting a dry product, the friction coefficient of which along the turns of the screw is less than that of the raw one, the product rises along the back wall to a lower height, the rate of spilling of the product into the casing window increases, the layer thickness before the turn of the screw decreases and the slats no longer reach this layer and therefore their influence on the ongoing process is virtually eliminated. However, with a very significant supply of dry product from the pounding device, when the product moves with a thick layer along the casing and therefore the circulation of the product particles in this layer changes, due to which the product rises higher along the wall of the casing, then the strips again come into contact with the product being moved and equalize its distribution along the width of the grind. Thus, the device can automatically maintain the level of distribution of the product across the width of the grinder, depending both on the coefficient of friction against the turns of the screw, which depends also on the moisture content of this product, and if a certain level of product supply to this device is exceeded.

The lower reflective shield 11 (Fig. 4) of the deck 8 (Fig. 1) prevents grain from entering the window of the casing 32 (Fig. 3, 4) of the screw 28 (Fig. 2, 3, 4), which reduces the circulation of grain in cleaning, in As a result of which the size of the grain flows in it and, consequently, the load on its sieve, resulting in a reduction in losses due to cleaning, are reduced.

Making the strips installed on the screw shaft flat and placing them on the shaft parallel to the shaft axis not only greatly simplifies the design of the device, but also allows you to reliably, without jamming the product, transfer it through the screw shaft and dump it into the local location necessary for alignment of distribution awesome blackboard.

The execution of the trapezoidal strips and their installation radially relative to the axis of rotation of the screw with an inclination to this axis in accordance with the linear dependence of the height of the strips on their location along the length of the screw allows to slightly improve the uniformity of product distribution over the width of the bar.

The installation of the slats on the screw shaft at an angle to each other allows you to more accurately coordinate the place where the product is discharged by the screw with the necessary local zone, which is deficient on the shaker board.

The installation of individual slats with the overlapping of their location along the length of the screw with their mandatory angular displacement relative to each other allows intensified discharge of the product into the window of the auger casing in places with a significant deficit of the product on the width of the shaker board.

The execution of the strips removable and / or parts thereof (with the composite design of the strips) allows you to change these strips to those of a set designed for cleaning various crops using special ones. attachments or adapters aggregated with a combine harvester.

Since it is possible to distribute the strips not only along the length of the screw, but also according to the angle of their installation on the screw, in order to simplify the achievement of the necessary static balance of the screw, the bars must be placed on the screw taking into account their mass and angle of placement.

Claims (7)

1. A screw distribution conveyor of an autonomous treshing device of a threshing machine of a combine harvester, comprising a screw mounted across the thresher and partially placed in a housing of the tilling device mounted on a spike elevator, the screw being installed parallel to the rotor of the tacking device with associated rotation to it, and a casing in which is placed a screw and which in the area between the sides of the thresher is equipped with a window facing the entrance to the thresher and formed by the upper rectilinear face and bottom face, made to ensure that the opening of the window increases in the direction of movement of the processed product, characterized in that on the shaft of the screw at the location of the window in its casing are installed, between separate adjacent turns located, strips so that the height of each subsequent strip in the direction of movement of the transported product more than the previous one, and the heights of the slats, for example, linearly depend on the distance of their location to the side of the thresher closest to the autonomous domolachayuschim device. 2. The screw distribution conveyor according to claim 1, characterized in that the strips are flat and mounted on the screw shaft parallel to the axis of the shaft. 3. The screw distribution conveyor according to any one of claims 1 and 2, characterized in that some of the slats are trapezoidal in shape, mounted radially relative to the axis of rotation of the screw, and the upper face of these slats is inclined to the axis of the screw in accordance with the linear dependence of the heights of the slats on their location along the length of the screw. 4. The screw distribution conveyor according to claim 1, characterized in that the strips on the screw shaft are arranged at an angle to each other. 5. The screw distribution conveyor according to any one of claims 1 and 4, characterized in that the individual slats are installed with overlapping their location along the length of the screw under the condition of angular displacement relative to each other. 6. The screw distribution conveyor according to any one of claims 1 and 4, characterized in that the slats on the screw shaft are located along its length and at an angle to each other to minimize the static unbalance of the screw. 7. The screw distribution conveyor according to claim 1, characterized in that the bars on the screw and / or parts thereof are removable.