Closed threshing and separating device and harvester

Abstract

The utility model relates to the technical field of agricultural machinery, in particular to a closed type threshing and separating device which comprises a closed type roller, a roller cover and a concave grid, the closed type roller comprises a roller body, a feeding body and a plurality of circles of spiral blades arranged on the roller body, the feeding body is arranged at the front end of the roller body, and the concave grid is arranged on the feeding body. A spiral part for feeding materials is arranged on the feeding body, the spiral number of the spiral blade is a, the screw pitch of the spiral blade is P1, the spiral number of the spiral part is b, and the screw pitch of the spiral part is P2; a is equal to b, and P1 is smaller than P2; or a = 1, b > = 1, and P1 < P2; the threshing effect can be improved, and it is guaranteed that crops are thoroughly threshed.

Description

Technical Field

[0001] The utility model relates to the technical field of agricultural machinery, in particular to a closed threshing and separation device and a harvester. Background Art

[0002] As an essential part of the combine harvester, the drum completes the threshing and separation process of crops by cooperating with the concave screen and the drum cover. At present, most of the drums are toothed rod drums.

[0003] The toothed roller mainly relies on the roller cover to guide the grass during threshing. When the threshing teeth are worn, the entire toothed roller needs to be replaced, which is very costly.

[0004] Prior art: For example, Jiangnan University provides a closed threshing and separation device for regenerated rice and a regenerated rice harvester with application number 202021099974.7.

[0005] Disadvantages of existing technology:

[0006] (1) There is no reinforcement between the spiral blades, which will cause serious deformation of the blades under impact during crop threshing;

[0007] (2) The threshing rod teeth are installed separately on the cylinder body, with no reinforcement around them, and will block the direction of the material when threshing;

[0008] (3) If the pitch of the spiral blade is greater than or equal to the pitch of the spiral feed head, the material will not be threshed cleanly. Utility Model Content

[0009] The purpose of the utility model is to provide a closed threshing and separation device, which can solve at least one technical problem in the background technology.

[0010] Another object of the present utility model is to provide a harvester that can solve at least one technical problem in the background technology.

[0011] The technical solution of the utility model is achieved in this way:

[0012] A closed threshing and separation device comprises a closed drum, a drum cover and a concave plate screen, wherein the closed drum comprises a drum body, a feeding body and a plurality of spiral blades arranged on the drum body, the feeding body is arranged at the front end of the drum body, a spiral part for feeding materials is arranged on the feeding body, the spiral number of the spiral blade is a, the pitch of the spiral blade is P1, the spiral number of the spiral part is b, and the pitch of the spiral part is P2;

[0013] It satisfies: a=b, P1<P2; or, a=1, b≥1, P1<P2.

[0014] Further, the spiral blade includes a single spiral blade, and blade reinforcing ribs are arranged between the spiral blades; or, the spiral blade includes at least two spiral blades arranged in parallel, and a plurality of blade reinforcing ribs are arranged between two adjacent spiral blades.

[0015] Furthermore, a plurality of the blade reinforcement ribs are arranged at intervals along the rotation direction of the spiral blade.

[0016] Furthermore, a plurality of plate tooth assemblies are arranged on the spiral blade, and the plurality of plate tooth assemblies are arranged at equal intervals along the rotation direction of the spiral blade;

[0017] The plate tooth assembly includes a plurality of plate teeth, the number of the plate teeth in the plate tooth assembly is x, the number of spiral blades in the spiral blade is a, and the following conditions are satisfied: x=a≥1;

[0018] The x plate teeth in the plate tooth assembly are respectively installed on a spiral blade of the spiral blade, and all the plate teeth in the plate tooth assembly are at the same installation height.

[0019] Further, x=a=1, the drum body forms a single spiral drum; or, x=a=2, the drum body 102 forms a double spiral drum; or, x=a≥3, the drum body forms a multi-spiral drum.

[0020] Furthermore, a plurality of mounting positions are arranged on the spiral sheet, each mounting position corresponds to one of the plate teeth, and each of the mounting positions has a plurality of mounting holes for mounting the plate teeth, and each of the plate teeth is correspondingly mounted in a plurality of the mounting holes of the mounting position through a plurality of bolt assemblies;

[0021] The number of the mounting holes in each mounting position is greater than the number of the bolt assemblies on each plate tooth, the spacings between the multiple mounting holes in the mounting position and the drum body are different, and the spacings between adjacent mounting holes in each mounting position are the same.

[0022] Furthermore, each of the plate teeth is correspondingly mounted on the mounting position on the spiral sheet through two of the bolt assemblies, and each of the mounting positions is provided with three mounting holes with the same spacing.

[0023] Furthermore, a grass guide assembly is arranged at the rear end of the drum body and along the extension line of the spiral blade.

[0024] Furthermore, the grass guide assembly includes a grass guide plate and grass guide reinforcement ribs, and the grass guide reinforcement ribs are located at the back side of the rotation direction of the grass guide plate.

[0025] A harvester comprises the closed threshing and separation device.

[0026] Compared with the prior art, the beneficial effects of the utility model are:

[0027] This application provides two solutions to solve the third technical problem in the prior art, specifically:

[0028] Solution 1: The number of spirals a of the spiral blades = the number of spirals b of the spiral part on the feeding body. This design ensures the smoothness of crop movement and the feeding amount. At the same time, the pitch P1 of the spiral blades is less than the pitch P2 of the spiral part on the feeding body, which improves and ensures the threshing effect of the crops.

[0029] Solution 2: The number of spirals a of the spiral blade is designed to be one, and the number of spirals b of the spiral part on the feeding body is designed to be at least one. Such a structural design especially ensures the threshing effect of difficult-to-thresh crops. At the same time, the pitch P1 of the spiral blade is less than the pitch P2 of the spiral part on the feeding body, which can improve and ensure the threshing effect of the crops. BRIEF DESCRIPTION OF THE DRAWINGS

[0030] In order to more clearly illustrate the technical solutions of the embodiments of the utility model, the drawings required for use in the embodiments will be briefly introduced below. It should be understood that the following drawings only show certain embodiments of the utility model 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 creative work.

[0031] Figure 1 This is an axonometric diagram of the closed separation device of the utility model when a single spiral drum is used;

[0032] Figure 2 For this utility model Figure 1 A front view of

[0033] Figure 3 For this utility model Figure 1 A front view of the closed drum;

[0034] Figure 4 This is an axonometric diagram of the closed separation device of the utility model when a double spiral drum is used;

[0035] Figure 5 For this utility model Figure 4 A front view of

[0036] Figure 6 For this utility model Figure 4 A front view of the closed drum;

[0037] Figure 7 It is a side view of the closed drum of the utility model;

[0038] Figure 8 For this utility model Figure 7 A partial enlarged view of the structure at point A in the middle.

[0039] In the figure:

[0040] 1-enclosed drum; 101-feeding body; 1011-spiral part; 102-drum body; 103-spiral blade; 104-blade reinforcement rib; 105-plate tooth; 106-grass guide assembly; 1061-grass guide plate;

[0041] 1062- grass guide reinforcement rib; 107- mounting hole; 108- bolt assembly;

[0042] 2-concave plate screen;

[0043] 3- Roller cover. DETAILED DESCRIPTION

[0044] In order to make the purpose, technical scheme and advantages of the embodiments of the utility model clearer, the technical scheme in the embodiments of the utility model will be clearly and completely described below in conjunction with the drawings in the embodiments of the utility model. Obviously, the described embodiments are part of the embodiments of the utility model, not all of the embodiments. Generally, the components of the embodiments of the utility model described and shown in the drawings here can be arranged and designed in various different configurations.

[0045] 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 present invention to be protected, but merely represents selected embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0046] 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, further definition and explanation thereof is not required in subsequent drawings.

[0047] In the description of the present utility model, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inside", "outside", etc. indicate the orientation or position relationship based on the orientation or position relationship shown in the accompanying drawings, or the orientation or position relationship in which the utility model product is usually placed when in use, which is only for the convenience of describing the utility model and simplifying the description, and does not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present utility model. In addition, the terms "first", "second", "third", etc. are only used to distinguish the description, and cannot be understood as indicating or implying relative importance.

[0048] In addition, the terms "horizontal", "vertical", "overhanging" and the like do not mean that the components are required to be absolutely horizontal or overhanging, but can be slightly tilted. For example, "horizontal" only means that its direction is more horizontal than "vertical", and does not mean that the structure must be completely horizontal, but can be slightly tilted.

[0049] In the description of the present invention, it is also necessary to explain that, unless otherwise clearly specified and limited, the terms "set", "install", "connect", and "connect" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0050] In conjunction with the accompanying drawings, some embodiments of the present invention are described in detail below. In the absence of conflict, the following embodiments and features in the embodiments can be combined with each other.

[0051] Example 1

[0052] Reference Figure 1-Figure 8 The present embodiment is a closed threshing and separation device, comprising a closed drum 1, a drum cover 3 and a concave screen 2. The closed drum 1 comprises a drum body 102, a feeding body 101 and a plurality of spiral blades 103 arranged on the drum body 102. The feeding body 101 is arranged at the front end of the drum body 102, and the feeding body 101 is provided with a spiral portion 1011 for feeding materials.

[0053] The number of spirals of the spiral blade 103 is a, the pitch of the spiral blade 103 is P1, the number of spirals of the spiral portion 1011 is b, and the pitch of the spiral portion 1011 is P2. It satisfies: a=b, P1<P2. It should be noted that the spiral portion 1011 on the feeding body 101 is essentially a spiral structure, but the spiral pitch is different from that of the spiral blade 103.

[0054] In this embodiment, the number of spirals a of the spiral blade 103 is equal to the number of spirals b of the spiral portion 1011 on the feeding body 101. This design ensures the smoothness of crop advancement and the feeding amount. At the same time, the pitch P1 of the spiral blade 103 is less than the pitch P2 of the spiral portion 1011 on the feeding body 101, thereby improving and ensuring the threshing effect of the crop.

[0055] The spiral blade 103 includes at least one spiral sheet, and a plurality of blade reinforcing ribs 104 are arranged between the spiral sheets, and the plurality of blade reinforcing ribs 104 are arranged at intervals along the rotation direction of the spiral blade 103 .

[0056] A plurality of plate tooth assemblies are arranged on the spiral blade 103, and the plurality of plate tooth assemblies are arranged at equal intervals along the rotation direction of the spiral sheet; the plate tooth assembly includes a plurality of plate teeth, the number of plate teeth 105 in the plate tooth assembly is x, the number of spiral sheets in the spiral blade 103 is a, and the following satisfies: x=a≥1; the x plate teeth 105 in the plate tooth assembly are respectively installed on a spiral sheets of the spiral blade 103, and all the plate teeth 105 in the plate tooth assembly are at the same installation height.

[0057] Since x=a≥1, when x=a=1, the drum body 102 forms a single-spiral drum, when x=a=2, the drum body 102 forms a double-spiral drum, and when x=a≥3, the drum body 102 forms a multi-spiral drum. For example, when x=a=3, the drum body 102 forms a triple-spiral drum, and when x=a=4, the drum body 102 forms a quadruple-spiral drum.

[0058] The following is a specific description of the case where the number of spiral blades in the spiral blade 103 is single or two (the structure of the multi-spiral drum is not repeated here, and is sequentially superimposed on the basis of the double-spiral drum):

[0059] When the spiral blade 103 includes a single spiral blade, as Figure 1-Figure 3 , x=a=1, the drum body 102 forms a single spiral drum; at this time, a spiral gap is formed between the spiral blades, and the blade reinforcement ribs 104 are arranged in sequence from the front end to the rear end of the spiral blade 103 (or arranged at equal intervals). In this way, blade reinforcement ribs 104 are respectively arranged on the inner and outer sides of each spiral blade. The blade reinforcement ribs 104 not only connect and fix the two adjacent spiral blades, but also are welded and fixed to the outer side wall of the drum body 102. Through the design of multiple blade reinforcement ribs 104, the structural strength is improved to ensure that there is no deformation during operation. Since x=a=1, the number of plate teeth 105 in the plate tooth assembly is also one, so the multiple plate teeth 105 are arranged at equal intervals according to the rotation direction of a single spiral blade.

[0060] When the spiral blade 103 includes two spiral blades arranged in parallel, Figure 4-Figure 6, x=a=2, the drum body 102 forms a double spiral drum. At least a plurality of blade reinforcing ribs 104 need to be arranged between the two spirals (i.e., the inner sides of the two spirals), and on this basis, a plurality of blade reinforcing ribs 104 can also be arranged at equal distances between the upper spiral of the spiral blade 103 and the lower spiral (i.e., the outer sides of the spiral), so that the spiral gaps between all the spirals are provided with blade reinforcing ribs 104, and similarly, all blade reinforcing ribs 104 not only connect and fix the two adjacent spirals, but also are welded and fixed to the outer side wall of the drum body 102, so as to improve the structural strength and ensure that the blade reinforcing ribs 104 are not deformed during operation, and the blade reinforcing ribs 104 are thin in thickness, so that the material will not be blocked during threshing or the obstruction to the material will be reduced compared with the prior art. Since x=a=2, the number of plate teeth 105 in the plate tooth assembly is also two, so the two plate teeth 105 in each group of plate tooth assemblies are respectively arranged on the two spirals and their installation heights are the same.

[0061] It should be noted that: the spiral blade 103 itself forms a spiral path due to its rotation direction, and the multiple blade reinforcement ribs 104 are arranged at intervals along the spiral path or rotation direction of the spiral blade 103, the blade reinforcement ribs 104 are located between two spiral pieces, and the multiple blade reinforcement ribs 104 are laid in sequence from the front end to the rear end of the spiral blade 103. Through the arrangement of the blade reinforcement ribs 104, it is ensured that the spiral blade 103 is not easily deformed when it is impacted during crop threshing.

[0062] In this embodiment, a plurality of mounting positions are provided on each spiral sheet, and the mounting positions are positions for mounting the plate teeth 105, each mounting position corresponds to a plate tooth 105, and each mounting position has a plurality of mounting holes 107 for mounting the plate teeth 105, and each of the plate teeth 105 is correspondingly mounted in a plurality of the mounting holes 107 of the mounting position through a plurality of bolt assemblies 108;

[0063] The number of the mounting holes 107 in each mounting position is greater than the number of the bolt assemblies 108 on each plate tooth 105, the spacings between the multiple mounting holes 107 in the mounting position and the drum body 102 are all different, and the multiple mounting holes 107 in each mounting position form a row and the spacings between adjacent mounting holes 107 are the same.

[0064] In this embodiment, a preferred implementation method is preferred. Figure 7 and Figure 8, two bolt holes are arranged on each plate tooth 105 and two bolt assemblies 108 are arranged correspondingly, that is, each plate tooth 105 can be correspondingly installed on the installation position on the spiral sheet through two bolt assemblies 108, and the number of installation holes 107 opened in each installation position is three. Each installation position has three installation holes 107, and only two adjacent installation holes 107 are used when the plate tooth 105 is installed. By selecting the installation holes 107 of the plate tooth 105, that is, by selecting the bolt assemblies 108 on the plate tooth 105 to be installed in any two adjacent installation holes 107 in the installation position, the plate tooth 105 is fixedly installed, thereby adjusting the gap between the closed drum 1 and the concave plate screen 2.

[0065] In this embodiment, if Figure 3 As shown, a grass guide assembly 106 is provided at the rear end of the drum body 102 and along the extension line of the spiral blade 103 .

[0066] Specifically, the grass guide assembly 106 includes a grass guide plate 1061 and a grass guide reinforcement rib 1062, and the grass guide reinforcement rib 1062 is located on the back side of the rotation direction of the grass guide plate 1061. The grass guide assembly 106 is located on the spiral extension line of the spiral blade 103 to ensure the smooth advancement of the crop.

[0067] The present application can increase the guiding effect of the material in the drum. By designing the blade reinforcement ribs 104, the strength of the spiral blades 103 can be increased. The number of spiral blades 103 equal to the number of spirals of the feeding body 101 can make the material transfer smoothly. Multiple spiral blades 103 can shorten the material residence time and increase the feeding amount.

[0068] Example 2

[0069] This embodiment is a closed threshing and separation device, which is different from the embodiment 1 in that:

[0070] In this embodiment, the number of spirals a of the spiral blade 103 is designed to be one, and the number of spirals b of the spiral portion 1011 on the feeding body 101 is designed to be at least one. Such a structural design can especially ensure the threshing effect of difficult-to-thresh crops. At the same time, the pitch P1 of the spiral blade 103 is less than the pitch P2 of the spiral portion 1011 on the feeding body 101, which can improve and ensure the threshing effect of the crops.

[0071] Example 3

[0072] A harvester comprises the closed threshing and separation device.

[0073] The beneficial effects of the technical solution of the utility model are:

[0074] (1) Blade reinforcement ribs 104 are added between the spiral blades 103 for reinforcement, which reduces blade deformation under impact during crop threshing. The spacing of each group of reinforcement ribs helps to reduce weight, and when the spiral blade 103 is single, the single spiral blade 103 can increase the material threshing time and make the difficult-to-thresh materials threshed cleanly.

[0075] (2) The pitch of the spiral blade 103 is smaller than the pitch of the spiral feeding body 101, thereby improving the threshing effect of the material;

[0076] (3) During threshing, the forward direction of the material is guided, and there are multiple gears (i.e., by selecting multiple mounting holes 107 to install the plate teeth 105) to adjust the gap between the closed drum 1 and the concave screen 2. The gap between the closed drum 1 and the concave screen 2 can be adjusted to achieve different separation gap requirements for different crops.

[0077] (4) Since the plate teeth 105 are individually provided, when wear occurs, only a single plate tooth 105 needs to be replaced.

[0078] (5) The pitch of the screw can be adjusted to fully thresh and separate the crops.

[0079] Finally, it should be noted that the above embodiments are only used to illustrate the technical solution of the utility model, rather than to limit it. Although the utility model has been described in detail with reference to the aforementioned embodiments, ordinary technicians in this field should understand that they can still modify the technical solutions recorded in the aforementioned embodiments, or replace some or all of the technical features therein with equivalents. However, these modifications or replacements do not make the essence of the corresponding technical solution deviate from the scope of the technical solution of the embodiments of the utility model.

[0080] In addition, those skilled in the art will appreciate that, although some embodiments herein include certain features included in other embodiments but not other features, the combination of features of different embodiments is meant to be within the scope of the present invention and form different embodiments. For example, in the above claims, any one of the claimed embodiments may be used in any combination. The information disclosed in this background technology section is intended only to deepen the understanding of the overall background technology of the present invention and should not be regarded as an admission or in any form of implication that the information constitutes prior art known to those skilled in the art.

[0081] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

[0082] The above description is only the preferred embodiment of the utility model, and is not intended to limit the utility model. For those skilled in the art, the utility model can have various modifications and changes. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the utility model shall be included in the protection scope of the utility model.

Claims

1. A closed threshing and separation device, comprising a closed drum (1), a drum cover (3) and a concave screen (2), wherein the closed drum (1) comprises a drum body (102), a feeding body (101) and a plurality of spiral blades (103) arranged on the drum body (102), the feeding body (101) being arranged at the front end of the drum body (102), and a spiral portion (1011) for feeding materials being arranged on the feeding body (101), characterized in that: The number of spiral blades of the spiral blade (103) is a, the pitch of the spiral blade (103) is P1, the number of spirals of the spiral portion (1011) is b, and the pitch of the spiral portion (1011) is P2; It satisfies: a=b, P1<P2; or, a=1, b≥1, P1<P2.

2. The closed threshing and separation device according to claim 1, characterized in that: The spiral blade (103) comprises a single spiral blade, and blade reinforcing ribs (104) are arranged between the spiral blades; or, the spiral blade (103) comprises at least two spiral blades arranged in parallel, and a plurality of blade reinforcing ribs (104) are arranged between two adjacent spiral blades.

3. The closed threshing and separation device according to claim 2, characterized in that: The plurality of blade reinforcing ribs (104) are arranged at equal intervals along the rotation direction of the spiral blade (103).

4. The closed threshing and separation device according to claim 2, characterized in that: A plurality of plate tooth assemblies are arranged on the spiral blade (103), and the plurality of plate tooth assemblies are arranged at equal intervals along the rotation direction of the spiral blade; The plate tooth assembly comprises a plurality of plate teeth (105), the number of the plate teeth (105) in the plate tooth assembly is x, the number of spiral blades in the spiral blade (103) is a, and the following condition is satisfied: x=a≥1; The x plate teeth (105) in the plate tooth assembly are respectively mounted on a spiral blade of the spiral blade (103), and all the plate teeth (105) in the plate tooth assembly are at the same installation height.

5. The closed threshing and separation device according to claim 4, characterized in that: When x=a=1, the drum body (102) forms a single spiral drum; or, when x=a=2, the drum body (102) forms a double spiral drum; or, when x=a≥3, the drum body (102) forms a multi-spiral drum.

6. The closed threshing and separation device according to claim 4, characterized in that: A plurality of mounting positions are arranged on the spiral sheet, each mounting position corresponds to one of the plate teeth (105), and each of the mounting positions has a plurality of mounting holes (107) for mounting the plate teeth (105), and each of the plate teeth (105) is correspondingly mounted in a plurality of the mounting holes (107) of the mounting position through a plurality of bolt assemblies (108); The number of the mounting holes (107) in each mounting position is greater than the number of the bolt assemblies (108) on each plate tooth (105), the spacings between the plurality of mounting holes (107) in the mounting position and the drum body (102) are all different, and the spacings between adjacent mounting holes (107) in each mounting position are the same.

7. The closed threshing and separation device according to claim 6, characterized in that: Each of the plate teeth (105) is correspondingly mounted on the mounting position on the spiral sheet via two of the bolt assemblies (108), and each of the mounting positions is provided with three mounting holes (107).

8. The closed threshing and separation device according to claim 1, characterized in that: A grass guide assembly (106) is arranged at the rear end of the drum body (102) and along the extension line of the spiral blade (103).

9. The closed threshing and separation device according to claim 8, characterized in that: The grass guide assembly (106) comprises a grass guide plate (1061) and a grass guide reinforcement rib (1062), wherein the grass guide reinforcement rib (1062) is located at the back side of the rotation direction of the grass guide plate (1061).

10. A harvester, characterized in that: The invention comprises the closed threshing and separation device according to any one of claims 1 to 9.

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