Screen surface combined structure, cleaning screen and harvester

Abstract

The utility model relates to the technical field of grain cleaning, in particular to a screen surface combined structure, a cleaning screen and a harvester. The screen surface combined structure comprises upper connecting plates, lower connecting plates and a plurality of screen pieces, the screen pieces are arranged at intervals, the upper portions of the two sides of each screen piece are connected with the corresponding upper connecting plate, the lower portions of the two sides of each screen piece are connected with the corresponding lower connecting plate, and the screen surface combined structure further comprises a plurality of screen surface partition plates. The screen face partition plate is arranged on the at least two screen pieces, and the position of the screen face partition plate can be adjusted in the length direction of the screen pieces. A user can freely set a plurality of screen surface partition plates according to factors such as terrain, material types and material distribution conditions, so that the screen surface is divided into areas in different ranges, materials move in the expected direction and are prevented from being accumulated at part of positions, and the uniformity of the materials on the screen surface is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of grain cleaning, in particular to a screen surface combination structure, a cleaning screen and a harvester. Background Art

[0002] Most existing crawler harvesters utilize longitudinal axial flow mechanisms, with the drum and screen box arranged parallel to each other. This results in a distribution of material from the drum onto the cleaning screen, with more material falling onto the sides and less in the center. This reduces the efficiency of the cleaning screen, leading to reduced cleaning performance and significant cleaning losses. Furthermore, as feed rates and operating speeds increase, material flow is affected by special operating conditions such as turns and hills, which can easily result in a situation where one side of the cleaning screen is empty and the other side is overloaded, resulting in insufficient cleaning performance. Utility Model Content

[0003] The present application aims to improve the problem of uneven distribution of materials on the cleaning screen existing in the background technology, and provides a screen surface combination structure, a cleaning screen and a harvester.

[0004] In a first aspect, the present application provides a screen surface assembly structure comprising an upper connecting plate, a lower connecting plate, and a plurality of screen plates, wherein the plurality of screen plates are arranged at intervals, and the upper portions of both sides of the screen plates are respectively connected to one of the upper connecting plates, and the lower portions are respectively connected to one of the lower connecting plates;

[0005] It also includes a plurality of screen surface partitions; the screen surface partitions are arranged on at least two of the screen plates, and the positions of the screen surface partitions can be adjusted along the length direction of the screen plates.

[0006] In a preferred embodiment, a mounting portion is provided on the screen plate along the length direction, and the screen surface partition includes a spacing portion and a positioning portion; the positioning portion is cooperatively connected with the mounting portion so that the screen surface partition is relatively fixedly arranged on the screen plate; the spacing portion extends in a direction away from the positioning portion.

[0007] In a preferred embodiment, the cross-section of the mounting portion is trapezoidal, with one side protruding from the surface of the screen to form a strip-shaped protrusion, and the other side recessed in the surface of the screen to form a strip-shaped groove; the positioning portion includes an upper clamping block and a lower clamping plate, and a clamping gap is formed between the upper clamping block and the lower clamping plate, and the shape of the clamping gap matches the mounting portion, so that the upper clamping block and the lower clamping plate can clamp the screen.

[0008] In a preferred embodiment, the spacer is provided on a side of the upper clamping block facing away from the screen plate, and the upper clamping block is connected to the lower clamping plate via a connecting piece.

[0009] In a preferred embodiment, the screen surface partition is made of nylon.

[0010] In a preferred embodiment, the upper connecting plate and the lower connecting plate are both made of nylon; a number of mounting holes are respectively provided on the upper connecting plate and the lower connecting plate, and two bolts are respectively provided at both ends of the screen plate; the end bolts of the screen plate connect the screen plate, the upper connecting plate and the lower connecting plate into one through nuts and gaskets.

[0011] In a second aspect, the present application provides a cleaning screen, comprising a screen box and any one of the screen surface combination structures described, wherein the screen surface combination structure is fixedly connected to the screen box via the upper connecting plate and the lower connecting plate.

[0012] In a third aspect, the present application provides a harvester comprising the aforementioned cleaning screen.

[0013] Compared with the prior art, this application has the following beneficial effects:

[0014] During use, the user can freely set several screen partitions according to factors such as terrain, material type, material distribution, etc., so as to divide the screen surface into areas of different ranges, so that the material moves in the expected direction and prevents the material from piling up in some positions, thereby improving the uniformity of the material on the screen surface. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the following is a brief introduction to the drawings required for use in the embodiments. It should be understood that the following drawings only illustrate certain embodiments of the present invention and therefore should not be regarded as limiting the scope. For ordinary technicians in this field, other relevant drawings can be obtained based on these drawings without paying any creative work.

[0016] Figure 1 This is a schematic structural diagram of the screen surface assembly structure provided in an embodiment of the present utility model when the screen surface partition is not installed;

[0017] Figure 2 This is a schematic diagram of the first arrangement of the screen surface assembly structure provided in an embodiment of the present utility model after the screen surface partition is installed;

[0018] Figure 3 This is a schematic diagram of the second arrangement of the screen surface combination structure provided in an embodiment of the present utility model after the screen surface partition is installed;

[0019] Figure 4 This is a schematic diagram of a screen surface partition provided in an embodiment of the present utility model from a first angle;

[0020] Figure 5 This is a second angle schematic diagram of the screen surface partition provided in an embodiment of the present utility model;

[0021] Numbers in the figure:

[0022] 1- sieve; 101- mounting portion;

[0023] 2-upper connecting plate; 3-lower connecting plate;

[0024] 4-screen surface partition; 401-spacer; 402-upper clamping block; 403-lower clamping plate; 404-connecting piece; 405-clamping gap. DETAILED DESCRIPTION

[0025] To make the objectives, technical solutions, and advantages of the embodiments of the present invention more clear, the technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the accompanying drawings of the embodiments of the present invention. Obviously, the described embodiments are only some of the embodiments of the present invention, not all of them. The components of the embodiments of the present invention generally described and labeled in the drawings can be arranged and designed in a variety of different configurations.

[0026] Therefore, the following detailed description of the embodiments of the present invention provided in the accompanying drawings is not intended to limit the scope of the claimed invention, but rather merely represents selected embodiments of the present invention. All other embodiments derived by persons of ordinary skill in the art based on the embodiments of the present invention without inventive effort are also within the scope of protection of the present invention.

[0027] It should be noted that similar reference numerals and letters denote similar items in the following drawings, and therefore, once an item is defined in one drawing, it does not need to be further defined or explained in subsequent drawings.

[0028] In the description of this utility model, it should be noted that the terms "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer" and the like, indicating orientations or positional relationships, are based on the orientations or positional relationships shown in the accompanying drawings, or are the orientations or positional relationships in which the utility model product is typically placed when in use. These terms are intended solely to facilitate the description of this utility model and to simplify the description, and are not intended to indicate or imply that the device or component referred to must have a specific orientation, be constructed, or operate in a specific orientation. Therefore, they should not be construed as limitations on this utility model. Furthermore, the terms "first," "second," and "third," etc., are used solely to distinguish descriptions and should not be construed as indicating or implying relative importance.

[0029] Furthermore, terms such as "horizontal," "vertical," and "overhanging" do not necessarily imply that a component must be absolutely horizontal or overhanging, but rather that it can be slightly tilted. For example, "horizontal" simply means that its direction is more horizontal than "vertical," and does not mean that the structure must be completely horizontal, but rather that it can be slightly tilted.

[0030] It should also be noted that, in the description of this utility model, unless otherwise expressly specified or limited, the terms "disposed," "installed," "connected," and "connected" should be understood in a broad sense. For example, they can refer to fixed connections, detachable connections, or integral connections; mechanical connections, electrical connections; direct connections, indirect connections through an intermediate medium, and internal connections between two components. Those skilled in the art will understand the specific meanings of the above terms in this utility model based on the specific circumstances.

[0031] The following embodiments of the present invention are described in detail with reference to the accompanying drawings. In the absence of conflict, the following embodiments and features in the embodiments may be combined with each other.

[0032] like Figures 1 to 3 As shown, the screen surface assembly structure provided in this embodiment includes an upper connecting plate 2, a lower connecting plate 3 and a plurality of screen plates 1. The plurality of screen plates 1 are arranged at intervals, and the upper parts of both sides of the screen plates 1 are respectively connected to an upper connecting plate 2, and the lower parts are respectively connected to a lower connecting plate 3;

[0033] It also includes a plurality of screen surface partitions 4 ; the screen surface partitions 4 are arranged on at least two screen plates 1 , and the positions of the screen surface partitions 4 can be adjusted along the length direction of the screen plates 1 .

[0034] Specifically, a mounting portion 101 is provided on the screen plate 1 along the length direction, and the screen surface partition 4 includes a spacer portion 401 and a positioning portion; the positioning portion is cooperatively connected with the mounting portion 101 so that the screen surface partition 4 is relatively fixedly provided on the screen plate 1; the spacer portion 401 extends in a direction away from the positioning portion, thereby dividing the space above the screen plate 1 into different areas.

[0035] The upper connecting plate 2 and the lower connecting plate 3 are both made of nylon; a number of mounting holes are respectively provided on the upper connecting plate 2 and the lower connecting plate 3, and two bolts are respectively provided at both ends of the screen plate 1; the end bolts of the screen plate 1 connect the screen plate 1, the upper connecting plate 2 and the lower connecting plate 3 into one body through nuts and gaskets.

[0036] like Figure 4 and Figure 5 As shown, in this embodiment, the cross-section of the mounting portion 101 is trapezoidal, one side protrudes from the surface of the screen plate 1 to form a strip-shaped protrusion, and the other side is recessed in the surface of the screen plate 1 to form a strip-shaped groove; the positioning portion includes an upper clamping block 402 and a lower clamping plate 403, and a clamping gap 405 is formed between the upper clamping block 402 and the lower clamping plate 403. The shape of the clamping gap 405 matches the mounting portion 101, so that the upper clamping block 402 and the lower clamping plate 403 can clamp the screen plate 1.

[0037] The spacer 401 is arranged on the side of the upper clamping block 402 away from the screen 1, and the upper clamping block 402 is connected to the lower clamping plate 403 by a connecting piece 404. The connecting piece 404 can be stuck between the teeth of the screen 1, so that the screen surface partition 4 cannot move left and right.

[0038] The screen surface partition 4 is made of nylon and has a certain elasticity, which can increase the width of the clamping gap 405 to a certain extent, making it easier to install and remove the screen surface partition 4. At the same time, there is a large friction between the nylon screen surface partition 4 and the metal screen plate 1, so that the screen surface partition 4 can be relatively fixed.

[0039] During use, the user can select the number and installation position of the screen partitions 4 according to the actual distribution of the material.

[0040] Figure 2 This is a schematic diagram of the first arrangement of the screen surface assembly structure provided in an embodiment of the present invention after the screen surface partitions are installed. In this embodiment, two screen surface partitions 4 are installed on each screen plate 1, and the screen surface partitions 4 on each screen plate 1 are positioned identically, so that the screen surface partitions 4 are arranged in two relatively neat rows in the longitudinal direction, dividing the screen surface into three areas with relatively uniform widths along the longitudinal direction. This arrangement ensures that after the material falls, it remains in the initial falling area and moves longitudinally, thus ensuring relatively uniform material distribution within each area and improving screening efficiency.

[0041] Figure 3 The following is a schematic diagram of a second arrangement of the screen surface assembly structure provided in an embodiment of the present invention after the screen surface partitions are installed. In this embodiment, two screen surface partitions 4 are installed on each screen plate 1. The screen surface partitions 4 on each screen plate 1 are positioned gradually closer together from the sides to the center, longitudinally from front to back. This arrangement allows the more dispersed material in the center to gradually gather toward the center after the material falls, while the more heavily fallen material on the sides gradually disperses, thereby ensuring relatively uniform material distribution at the outlet of each area and improving the screening effect.

[0042] The above only gives two arrangements of screen partitions. Users can set the number of screen partitions and arrange the positions of screen partitions according to the actual distribution of materials.

[0043] This embodiment also provides a cleaning screen, including a screen box and the screen surface combination structure. The screen surface combination structure is fixedly connected to the screen box through the upper connecting plate 2 and the lower connecting plate 3 to form a cleaning screen.

[0044] This embodiment also provides a harvester, including the cleaning screen.

[0045] The cleaning screen and harvester have all the advantages of the screen surface combination structure, which will not be described in detail here.

[0046] The above are merely preferred embodiments of the present invention and are not intended to limit the present invention. Those skilled in the art will readily appreciate that the present invention is susceptible to various modifications and variations. Any modifications, equivalent substitutions, or improvements made within the spirit and principles of the present invention shall be included within the scope of protection of the present invention.

Claims

1. A screen surface assembly structure, comprising an upper connecting plate, a lower connecting plate and a plurality of screen plates, wherein the plurality of screen plates are arranged at intervals, and the upper portions of both sides of the screen plates are respectively connected to one of the upper connecting plates, and the lower portions are respectively connected to one of the lower connecting plates, characterized in that: It also includes a plurality of screen surface partitions; the screen surface partitions are arranged on at least two of the screen plates, and the positions of the screen surface partitions can be adjusted along the length direction of the screen plates.

2. The screen surface combination structure according to claim 1, characterized in that: A mounting portion is provided on the screen plate along the length direction, and the screen surface partition includes a spacing portion and a positioning portion; the positioning portion is cooperatively connected with the mounting portion so that the screen surface partition is relatively fixedly provided on the screen plate; the spacing portion extends in a direction away from the positioning portion.

3. The screen surface combination structure according to claim 2, characterized in that: The cross-section of the mounting portion is trapezoidal, with one side protruding from the surface of the screen to form a strip-shaped protrusion, and the other side recessed in the surface of the screen to form a strip-shaped groove; the positioning portion includes an upper clamping block and a lower clamping plate, and a clamping gap is formed between the upper clamping block and the lower clamping plate, and the shape of the clamping gap matches the mounting portion, so that the upper clamping block and the lower clamping plate can clamp the screen.

4. The screen surface combination structure according to claim 3, characterized in that: The spacer is arranged on a side of the upper clamping block away from the screen plate, and the upper clamping block is connected to the lower clamping plate via a connecting piece.

5. The screen surface combination structure according to claim 3, characterized in that: The screen surface partition is made of nylon.

6. The screen surface combination structure according to claim 1, characterized in that: The upper connecting plate and the lower connecting plate are both made of nylon; a number of mounting holes are respectively provided on the upper connecting plate and the lower connecting plate, and two bolts are respectively provided at both ends of the screen plate; the end bolts of the screen plate connect the screen plate, the upper connecting plate and the lower connecting plate into one through nuts and gaskets.

7. A cleaning screen, characterized in that: It comprises a screen box and the screen surface combination structure according to any one of claims 1 to 6, wherein the screen surface combination structure is fixedly connected to the screen box through the upper connecting plate and the lower connecting plate.

8. A harvester, characterized in that: Including the cleaning screen as described in claim 7.

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