RU194260U1 - Combine harvester sieve - Google Patents

Abstract

The technical solution relates to elements of combine harvesters designed for threshing and separation of grain, in particular to sieves for combine harvesters. In a sieve of a combine harvester containing parts including a rectangular-shaped frame and dividers installed in the frame parallel to one of the sides of the frame, made with the possibility of fastening the louvered plates, according to the claimed solution, the sieve parts are interconnected using a lock connection. The locking joint can be, in particular, a tongue-and-groove, mortise-groove or mortise-notch connection. The technical result is to increase the productivity and strength of the connections of the parts together in the manufacture of sieves.

Description

The technical solution relates to elements of combine harvesters designed for threshing and separation of grain, in particular, to sieves for combine harvesters.

The sieves of combine harvesters are widely known in the prior art, they have different designs and, as a rule, are made of metal by welding, as well as bolted or riveted joints.

In particular, such sieves are known from the RF patent for invention No. 2604559 “LATTICE FOR COMBINE CLEANING DEVICE” (IPC A01F 12/44, published December 10, 2016), Ukrainian patent UA28460 “Louvre sieve” (published October 10-12, 2007), patent EP1849351 “Sieve adjustment mechanism for an agricultural combine” (IPC A01F 12/44, published 31-10-2007).

As the closest analogue, the “BLINDING LATTICE” was selected according to the patent of the Russian Federation for invention No. 2176869 (IPC A01F 12/44, published on December 20, 2001). The louvre sieve contains a frame, dividers and comb louvers fixed on the rotary axes, the rotary axes of which pass through the holes of the dividers and fit into the grooves of wooden blocks installed in the frame. The frame contains two side strips made of a U-shaped profile.

A sieve of known design during operation has a large load, including leading to bending and twisting, for example, when the combine is moving on an inclined surface. Such loads lead to the gradual destruction of the joints of parts made in the form of welds, bolts or rivets, and the failure of the sieves.

The objective of the proposed solution is to increase the accuracy and strength of assembly of the details of the sieve of the combine harvester, the strength of their connection to each other, to increase productivity and reduce time costs in the production of sieves. The technical result is to increase the productivity and strength of the connections of the parts together in the manufacture of sieves.

The claimed technical result is achieved by the fact that in the sieve of the combine harvester containing parts including a rectangular-shaped frame and dividers installed in the frame parallel to one of the sides of the frame, made with the possibility of fastening the louvered plates, according to the claimed solution, the details of the sieve are interconnected using a lock connection . The locking joint can be, in particular, a tongue-and-groove, mortise-groove or mortise-notch connection.

In order to understand the claimed technical solution, a lock connection refers to such connections between parts that form, in particular, as a result of the introduction or placement of a protruding part (in the form of a protrusion, collar, thickening, cam or spike) of one of the connected parts into the cavity (in the form of an opening , groove, recesses, recesses, recesses) or beyond the protrusion of another part, as well as the cavity on one of the parts to be joined, into the cavity on the other. In the general case, the formation of the connection between the parts during the locking connection occurs precisely due to the peculiarities of the shape of the mating sections of these parts, in which the parts of the mating parts are combined, preventing their relative movement, providing fixation of the position of one part relative to another.

Due to the fact that the mating parts of the sieve of the combine harvester are made with locking joints, they have high accuracy in positioning the parts relative to each other. The difference along the diagonals of the product does not exceed 1 mm, with different dimensions of the sieves. Even in the case when the final fixation of the assembly is carried out by welding, bolt or riveting, the locking connection of parts allows you to remove the load on the weld, bolt or rivet connection, which helps to increase the strength properties of the product.

Assembly of the sieve, as well as its components takes less time and labor, compared with other methods. The mating parts are fixed relative to each other at once in several planes, without the use of any technological equipment or tool.

The technical solution is explained below using the figures.

Figure 1 presents a General view of the sieve of the combine harvester in one of the possible options for its execution.

FIG. 2 - connection of the separator and the rotary axis for installing the louvre plates in one of the options of the sieve.

In FIG. Figures 3-8 show castle joints of various types at the junctions of various mating parts of the sieve.

FIG. 3 - connection of a thorn groove of a separator and a frame.

FIG. 4 - connection of a thorn groove of a separator and a frame.

FIG. 5 - connection of a thorn-groove of a plate of fastening, bracket and frame.

FIG. 6 - connection of the separator and the frame using the locking element.

FIG. 7a and 7b are a joint groove-groove separator and frame.

FIG. 8a and 8b show a groove-to-groove connection with a hook of a separator and a frame.

Further, the design of the sieve of the combine harvester is described in detail using the example of a louvre sieve with rotary axes, with reference to the figures, which are marked with numbers: 1 - sieve, 2 - frame, 3 - spacer, 4 - rotary axis, 5 - bracket, 6 - mounting plate , 7 - castle element.

The sieve of the combine harvester shown in the figures is a rectangular frame, preferably a closed loop, made, for example, of sheet material molded from sheet material of a profile or pipe of various configurations. The most commonly used materials when assembling sieves for combine harvesters: sheet material from 0.6 mm to 20 mm, a circle with a diameter of 6 mm to 60 mm, a wire from 1 mm to 8 mm, a rectangular pipe with a cross-section from 15x10 mm to 40x60 mm, a square pipe with a cross-sectional view from 10x10 mm to 30x30 mm. In most cases, the design of such sieves represents blinds of various configurations of the rotary plates with the possibility of changing the gap between the latter. This design requires the presence of dividers and rotary axes for mounting plates (combs or lamellas). One possible embodiment of such sieves is shown in FIG. one.

In addition to the one shown in FIG. 1 versions of the sieve, other options are possible. In particular, the louvre plates can be fixed without using pivoting axes extending along the entire length of the plates. In this case, the louvre plates are made with cavities on their side parts, into which pins are mounted to fix the plates in the sieve, in particular to the frame and dividers.

The dimensions of the sieve can vary in width from 250 mm to 1800 mm, in length from 150 mm to 2500 mm. The specific sieve size depends on the model of the combine harvester. Separators are designed for mounting plates, and the number of separators installed depends on the size of the sieve and the model of the combine harvester, as a rule, 1 to 7 dividers are installed in the sieve, and a large number of dividers are possible depending on the design features of the combine harvester.

In FIG. 2 shows the connection of the separator (3) and the rotary axis (4) for installing the louvre plates in one of the sieve variants. In this case, the rotary axis (4) is placed in the bore of the separator (3), providing a fixation of the position of the axis (4) in the plane of the separator (3) during its rotation, which sets a high linear shape that eliminates excesses.

FIG. 3 represents a thorn-groove connection of a separator (3) and a frame (2). The separator (3) is made with a protrusion (spike) at one of its end, which is placed in the hole (groove) made in the frame (2).

FIG. 4 is another embodiment of a spike-groove connection of a spacer (3) and a frame (2). The separator (3) is made with a protrusion (spike) at one of its ends, which are placed in the recess (groove) of the frame (2).

FIG. 5 represents a thorn-groove connection of a bracket (5), a mounting plate (6) and a frame (2). The fastening bracket (5) is made in such a form that at its ends it contains protrusions (spikes) corresponding in shape and size to the holes (grooves) in the frame (2). The mounting plate (6) also contains a protrusion (spike) on one of its sides, corresponding to a recess (groove) on the frame (2).

FIG. 6 represents the connection of the separator (3) and the frame (2) using a locking element (7). The locking element (7) has such a shape that provides reliable fixation and immobility of the separator (3) and the frame (2) relative to each other.

FIG. 7a and 7b represent the groove-to-groove connection of the separator (3) and the frame (2). The separator (3) is made with a recess (groove) at one of its ends, which is placed in the recess (groove) of the frame (2), in shape and size corresponding to the recess on the separator (3).

FIG. 8a and 8b represent a groove-to-groove joint with a hook of a separator (3) and a frame (2). The separator (3) is made with a recess (groove) at one of its ends, which is placed in the recess (groove) of the frame (2), in shape and size corresponding to the recess on the separator (3). Moreover, the part of the separator (3), which forms a recess located on the outside of the recess, has a hook in the form of a beveled edge with a protrusion. And on the frame (2) an additional hole is made, which is located so that when combining the notches of the separator (3) and the frame (2), the hook of the separator (3) is placed in the hole of the frame (2), being fixed with the help of the protrusion of the hook. With this type of locking connection, it becomes possible to transfer, rotate and rotate the sieve structure without changing the location of the parts.

The dimensions of the protrusions and recesses are selected in such a way as to reliably prevent the relative movement of parts relative to each other. In a preferred embodiment, the depth of the recess is selected from 0.5 mm to 50 mm, the length (height) of the protrusion from 0.5 mm to 50 mm. The width of the recesses and protrusions is preferably equal to the thickness of the metal from which the sieve is made, or the thickness of one of the mating parts. Execution with a deviation of the size in the specified range is possible, both up and down, depending on the technical conditions of assembly of the product. When the locking groove-groove connection with the hook, the length of the hook depends on the material and the size of the mating parts.

To increase productivity and eliminate erroneous connection of parts between each other, the protruding parts and cavities of the parts to be joined are preferably made in such a way that during assembly each part can be installed in only one way, for example, it has no installation options in different places of the sieve or in a different direction, position etc.

Combine harvester sieves containing parts connected using lock joints, along with high performance, accuracy and strength of the frame assembly, are characterized by a high degree of linearity in the installation of lamellar elements of the louvre sieve. The rotary axis (4), mounted as shown in FIG. 2, have a high linear shape, eliminating kinks, and, therefore, require less effort during rotation.

Lock joints, in which there is an exact combination of parts of the mating parts, preventing their relative movement, ensure the fixation of the position of one part relative to another in one or more planes, increasing productivity in the manufacture of sieves and the strength of the connection of the parts together.

The specialist in this field it is obvious that the above examples of the sieve and locking joints for interfacing the details of the sieve do not limit the scope of the claimed technical solution presented types of locking joints and sieves. It is possible that both the use of other types of locking joints for interfacing the parts presented, and the use of the presented types of locking joints for interfacing other sieve parts.

Claims (4)

1. Sieve of a combine harvester containing parts including a rectangular-shaped frame and dividers installed in the frame parallel to one of the sides of the frame, made with the possibility of attaching louvered plates, characterized in that the details of the sieve are interconnected by means of a lock connection. 2. The sieve of the combine harvester according to claim 1, characterized in that the locking connection is a thorn-groove connection. 3. The sieve of the combine harvester according to claim 1, characterized in that the locking connection is a groove-groove connection. 4. The sieve of the combine harvester according to claim 1, characterized in that the locking connection is a groove-groove connection with a hook.

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