General purpose grain thresher

Abstract

A general-purpose threshing machine for grains according to the present invention comprises a general-purpose drum that is rotatable, a threshing chamber in which the general-purpose drum is disposed internally and an inlet and a chaff discharge port are spaced apart from each other along the rotational axis direction of the general-purpose drum, and a grain discharge port is spaced apart from the general-purpose drum in the rotational radius direction of the general-purpose drum, and a threshing mesh frame disposed at the grain discharge port and having a plurality of grain discharge holes formed therein. The general-purpose drum comprises a rotating body that rotates about a rotational axis extending in the rotational axis direction, and a plurality of threshing blades that are arranged along a spiral of a predetermined diameter on the outer circumference of the rotating body to form a plurality of screws. Each of the threshing blades comprises a first member disposed along the spiral and a second member bent from the rear end of the first member in the rotational axis direction toward the chaff discharge port side. As such, using the general-purpose grain threshing machine according to the present invention has the advantage of preventing excessive crushing, easily separating grains from chaff, and smoothly transporting and discharging the separated chaff, thereby reducing the amount of damaged grains and foreign substances mixed in.

Description

Technology Field

[0001] The present invention relates to a general-purpose grain threshing machine for threshing harvested grains such as beans, sorghum, and barley to separate the grain kernels from chaff and collect them. Background Technology

[0002] Korean Published Patent Application No. 10-2022-0064887 (Publication Date: May 19, 2022) discloses a 'sorting and discharge device for a combine harvester'. Upon examining this prior patent, when grain cut by a cutting unit is transported to a threshing device, chaff and paddy are separated and discharged by a conveying screw unit, a fixed cutting blade unit, a movable cutting blade unit, etc.

[0003] However, the aforementioned prior art is optimized for harvesting rice ears, and has the following problems when it comes to threshing grains such as beans, sorghum, and barley.

[0004] For example, grains such as beans, sorghum, and barley have a height of approximately 50 to 70 cm due to their characteristics, and the beans can only be separated when the pods surrounding the beans are opened by external physical stimulation. However, when grains such as beans, sorghum, and barley are threshed in the manner of the aforementioned prior art, the grains are crushed by the screw and indiscriminately cut during the process of separating the grains from the chaff, resulting in a large number of damaged grains. Additionally, chaff such as pods and stems are excessively crushed and discharged mixed with the grains rather than separated from them, leading to a heavy load on the sorting process for separating the grains from foreign substances after threshing. Prior art literature

[0005] Republic of Korea Published Patent Application No. 10-2022-0064887 (Date of publication: May 19, 2022) The problem to be solved

[0006] The present invention was devised to solve the above-mentioned problems, and aims to provide a general-purpose grain threshing machine that is adaptable to the characteristics of grains other than rice, such as beans, sorghum, and barley, so that damage to the grains is minimized during threshing and chaff can be smoothly separated from the grains and discharged. means of solving the problem

[0007] A general-purpose threshing machine for grains according to the present invention for realizing the above-mentioned objectives comprises a general-purpose drum that is rotatable, a threshing chamber in which the general-purpose drum is disposed internally, wherein an inlet and a chaff discharge port are provided spaced apart from each other along the rotational axis direction of the general-purpose drum, and a grain discharge port is provided spaced apart from the general-purpose drum in the rotational radius direction of the general-purpose drum, and a threshing mesh frame disposed at the grain discharge port and having a plurality of grain discharge holes formed therein. The general-purpose drum comprises a rotating body that rotates about a rotational axis extending in the rotational axis direction, and a plurality of threshing blades that are arranged along a spiral of a predetermined diameter on the outer circumference of the rotating body to form a plurality of screws. Each of the threshing blades comprises a first member arranged along the spiral and a second member that is bent from the rear end of the first member toward the chaff discharge port side in the rotational axis direction in the rotational direction of the rotating body.

[0008] The first member is formed such that the width corresponding to the spiral direction narrows as it extends radially outward from the general-purpose drum, and the front end of the first member is formed as a curved shape bent toward the rear end of the first member in the rotational direction of the rotating body, and the rear end of the first member may be formed as a straight shape perpendicular to the radial direction of the general-purpose drum.

[0009] The second member may include a first portion that widens in the radial direction from the inner end of the rotating body side toward the radially outer side to a predetermined position, and a second portion that extends radially outward from the first portion while maintaining a constant width.

[0010] The above-described rotating body includes a screw rotor that is positioned on the side of the inlet with respect to the plurality of threshing blades in the direction of the rotation axis and rotates together with the screw rotor, and the screw rotor is formed in a wedge shape in which the diameter expands as it moves toward the spiral conveying direction relative to the direction of the rotation axis, and the spiral of the threshing blade can be connected on the spiral extension line of the screw rotor.

[0011] The threshing net frame may be formed in a cylindrical shape surrounding the rotating body or in an arc shape curved in the circumferential direction of the rotating body, and may include a perforated plate having a plurality of perforations formed therein, and a plurality of ribs protruding in a ring shape or arc shape toward the rotating body from the inner surface of the perforated plate and spaced apart from each other at a predetermined distance along the rotational axis direction.

[0012] Preferably, the threshing net frame is formed in the shape of an arc, and one threshing net frame is arranged along the circumferential direction of the rotating body or two or more threshing net frames are connected along the circumferential direction of the rotating body, and one threshing net frame is arranged along the rotational axis direction or two or more threshing net frames are connected along the rotational axis direction.

[0013] Meanwhile, the rotating body may include a rotating shaft; first and second covers spaced apart from the rotating shaft in the direction of the rotating shaft; a plurality of supports each spaced apart from the rotating shaft between the first and second covers and spaced apart along the circumferential direction of the rotating body with respect to the rotating shaft, to which the threshing blade is attached; a bracket each attached to the rotating shaft to support the plurality of supports; and a plurality of third covers shielding the space between the supports in the circumferential direction of the rotating body.

[0014] The above bracket may include a plurality of driving brackets each coupled to the rotation axis and spaced apart in the direction of the rotation axis; and a plurality of first driven brackets joined to one surface of the driving bracket in the direction of the rotation axis and supporting the support member.

[0015] The first drive bracket may include a polygonal center formed with a center hole that is fitted onto the rotation axis and connected to the drive bracket; a plurality of extensions protruding from each side of the center in the radial direction of the rotating body; and a plurality of connecting parts protruding from the ends of each extension in the radial direction of the rotating body and connected to the support.

[0016] The extension of the first driver bracket may have a shape that narrows in a triangular form toward the coupling portion of the first driver bracket.

[0017] The support member may include a central portion forming an insertion opening into which a connecting portion of the first driven bracket is inserted, and a pair of wing portions extending from both ends of the central portion of the support member in the circumferential direction of the rotating body to form an insertion opening into which an extension portion of the first driven bracket is inserted.

[0018] The above third cover may include first and second cover parts that are connected in a 'v' shape and are connected to the wing part of the support, respectively, in a state in contact with the outer surface of the wing part of the support.

[0019] It may further include a chaff guide disposed at the end of the outer surface of the rotating body facing the chaff discharge port of the threshing chamber in the radial direction of the rotating body, for guiding the chaff to the chaff discharge port of the threshing chamber.

[0020] The above-mentioned debris guide may include a plurality of guide blades arranged in a row along the rotational axis direction and a plurality of guide units spaced apart along the circumferential direction of the rotating body.

[0021] The guide blades of each of the above guide units may be arranged in a line along the circumferential direction of the rotating body and may each be in a shape that protrudes vertically in the radial direction of the rotating body.

[0022] Each of the above guide units may further include first and second guide plates that are arranged together with the guide blade or interchangeably depending on the type of grain.

[0023] The first and second guide plates may each include a guide portion positioned behind the plurality of guide blades in the direction of rotation of the rotating body, and a support portion interposed between the plurality of guide blades and the rotating body.

[0024] The second guide plate may further be provided with a guide extension that extends radially from the outer end of the guide portion in the radial direction of the rotating body, is bent at a predetermined angle in the rotational direction of the rotating body with respect to the guide portion and arranged in an inclined shape, and is formed in a wavy shape along the rotational axis direction. Effects of the invention

[0025] The general-purpose grain threshing machine according to the present invention allows grains to be threshed in a threshing manner by means of a plurality of threshing blades when the rotating body rotates, resulting in excellent threshing efficiency with a low amount of damaged grains and foreign matter contamination.

[0026] In addition, the present invention can form a flow or momentum that allows chaff separated from grains to be blown outward in a radial direction and smoothly transported toward a chaff discharge port due to the structural features of a plurality of threshing blades.

[0027] In addition, the present invention provides a threshing net frame made of a perforated plate at the chaff discharge port, so that chaff can be discharged smoothly without getting caught in the threshing net frame.

[0028] In addition, by forming ribs on the perforated plate, grains can be smoothly discharged through the perforations of the perforated plate.

[0029] In addition, the present invention has a plurality of threshing blades spaced apart in the direction of the rotation axis within a spacing corresponding to one pitch of the screw based on one rotation of a general-purpose drum, so that threshing efficiency is excellent, threshing and chaff conveying can be carried out smoothly regardless of the direction in which grains are introduced before threshing, and the conveying speed of chaff can be faster than that of a general screw, so that grains and chaff can be separated more reliably.

[0030] In addition, the present invention allows the threshing blade to be positioned in a state inclined in the spiral direction relative to the circumferential direction of the rotating body, thereby securing a large threshing area, excellent threshing efficiency, and smoother discharge of chaff.

[0031] In addition, the present invention allows for the replacement of some of the plurality of threshing blades, making maintenance easy.

[0032] In addition, the present invention has a rotating body in the shape of a hexagonal star, and a concave groove is formed on the outer surface of the rotating body in the radial direction so that a large amount of debris can be smoothly transported and the rotating body can rotate stably without structural shaking. Brief explanation of the drawing

[0033] FIG. 1 is a drawing showing a combine harvester to which a general-purpose grain threshing machine according to one embodiment of the present invention is applied. Figure 2 is a partially exploded perspective view of a general-purpose grain threshing machine shown in Figure 1. Figure 3 is a partial side cross-sectional view of the general-purpose grain threshing machine shown in Figure 1. Figure 4 is a side view showing the universal drum of the universal grain threshing machine shown in Figure 1. Figure 5 is a cross-sectional view along line AA of Figure 3. FIG. 6 is an exploded perspective view showing a part of the general-purpose grain threshing machine illustrated in FIG. 1. Figure 7 is an unfolded view showing the arrangement of the threshing blades by unfolding a part of the general-purpose grain threshing machine illustrated in Figure 1. Figure 8 is a cross-sectional view along line BB of Figure 3. FIG. 9 is a perspective view showing a chaff guide equipped with a first guide plate to facilitate the discharge of chaff generated during threshing of sorghum and similar grains in the general-purpose grain threshing machine shown in FIG. 1. FIG. 10 is a front view of the first guide plate shown in FIG. 9. FIG. 11 is a perspective view showing a chaff guide equipped with a second guide plate to facilitate the discharge of chaff generated during the threshing of barley and similar grains in the general-purpose grain threshing machine shown in FIG. 1. FIG. 12 is a front view of the second guide plate shown in FIG. 11. Specific details for implementing the invention

[0034] A preferred embodiment of the present invention is described as follows with reference to the attached drawings.

[0035] The general-purpose threshing machine for grains according to the present invention may be installed as part of a combine harvester, or may be configured as a standalone machine dedicated to threshing. As illustrated in FIG. 1, a combine harvester to which the general-purpose threshing machine for grains according to the present invention is applied includes a mower (A) provided at the front for harvesting grains such as beans, sorghum, and barley, a threshing machine (B) for threshing grains such as beans, sorghum, and barley harvested by the mower (A), a grain collection unit (C) for collecting grains threshed by the threshing machine (B), and a grain storage unit (D) for transporting and storing grains collected in the grain collection unit (C).

[0036] The threshing chamber (1) forming the threshing machine (B) may be formed in the shape of a hollow cylinder that is long in the front-rear direction of the combine. On one side of the threshing chamber (1), an inlet (1a) may be provided, which is connected to a mower (A) and into which grains such as beans, sorghum, and barley harvested by the mower (A) before threshing are introduced. On the other side of the threshing chamber (1), a chaff discharge port (1c) may be provided for discharging chaff separated from the grains. The inlet (1a) and the chaff discharge port (1c) of the threshing chamber (1) may be provided spaced apart from each other along the rotational axis direction of the general-purpose drum to be described later. That is, corresponding to the threshing chamber (1) which is long in the front-rear direction, the rotation axis (10) of the general-purpose drum is arranged long in the front-rear direction, and the inlet (1a) and the chaff discharge port (1c) of the threshing chamber (1) are spaced apart from each other in the front-rear direction, but more preferably, the inlet (1a) may be provided at the front of the threshing chamber (1) and the chaff discharge port (1c) may be provided at the rear of the threshing chamber (1). The chaff discharge port (1c) of the threshing chamber (1) may be in the form of an opening in the radial direction of the rotating body (2) to be described later on the bottom or side of the threshing chamber (1), and may be provided as a shoot structure. In addition, the threshing chamber (1) may be provided with a grain discharge port (1b) for discharging threshed grain at a position spaced apart from the general-purpose drum in the rotational radius direction of the general-purpose drum. The grain discharge port (1b) of the threshing chamber (1) can be positioned at the bottom of the threshing chamber (1) relative to the rotation axis (10) of the general-purpose drum so that only the threshed grain can be separated from chaff and discharged. Additionally, the grain discharge port (1b) of the threshing chamber (1) can be formed to be long in the direction of the rotation axis, that is, in the front-rear direction.

[0037] A threshing net frame (300) with a mesh structure is placed at the grain discharge port (1b) of the threshing room (1).

[0038] The threshing net frame (300) can be any type of net structure. However, in the case of the conventional (iron) net made of woven horizontal and vertical lines, the intersections of the horizontal and vertical lines protrude, and chaff gets stuck in these areas and is often not discharged. Additionally, a ring rod is attached to the (iron) net to restrict the threshed grain from being transported along the rotational axis direction and to guide it to be discharged through the net. However, attaching the ring rod to the (iron) net is a difficult process, and due to these manufacturing difficulties, there is a limit to reducing the diameter of the ring rod. Consequently, chaff gets caught on the ring rod, and it is pointed out that the thin (iron) net has difficulty supporting the ring rod.

[0039] To solve the above-mentioned problems, the threshing net frame (300) of the present invention is characterized by being composed of a perforated plate (310) having a plurality of perforations (311) formed therein. That is, a plurality of holes are drilled in a perforated plate (310) made of a surface to form a plurality of perforations (311). Since there are no protruding parts such as the intersections of the (iron) net, chaff does not get stuck in the perforated plate (310) and can be smoothly transported to the detection discharge port (1c).

[0040] Additionally, the threshing net frame (300) may further include a plurality of ribs (320) that protrude radially from the inner surface of the perforated plate (310) toward the rotating body () for a predetermined length and are spaced apart from each other along the rotation axis direction (arrow T). Accordingly, the perforated plate (310) and the plurality of ribs (320) can be easily manufactured as a single unit, the protruding length of the ribs (320) can be easily adjusted so as not to hinder the transport of chaff, the protruding length of the ribs (320) can be easily adjusted according to the type of grain, etc., and the ribs (320) can be firmly supported, which is an advantage. A rib (330) may be formed protruding from the outer surface of the perforated plate (310) for the purpose of reinforcement, etc.

[0041] Meanwhile, the threshing net frame (300) may be formed in a cylindrical shape surrounding the rotating body () or in an arc shape curved in the circumferential direction (arrow F) of the rotating body (), that is, in a shape corresponding to a part of a circle. Preferably, the threshing net frame (300) is formed in an arc shape and, if necessary, may be provided in an expanded form by assembling multiple frames in the circumferential direction (arrow F) and the rotation axis direction (arrow T). For example, as shown in the illustration, the threshing net frame (300) may be made in an arc shape corresponding to a quarter arc, a pair of threshing net frames (300) may be connected in a semicircular shape in the circumferential direction (arrow F), and two threshing net frames (300) may be connected along the rotation axis direction (arrow T).

[0042] In order to securely assemble multiple perforated mesh frames (300) in this manner, side flanges (312) that are bent outward in the radial direction are provided at each side end of the perforated frame (300) in the circumferential direction (arrow F), so that the side flanges (312) of adjacent perforated frames (300) connected in the circumferential direction (arrow F) can be joined by welding or bolt fastening while in contact with each other. Additionally, end flanges (313) that can be in contact with each other along the rotational axis direction (arrow T) are provided at each end of the perforated frame (300) in the rotational axis direction (arrow T), similar to the ribs (320) described above, so that the end flanges (313) of adjacent perforated frames (300) connected in the rotational axis direction (arrow T) can be joined by welding or bolt fastening while in contact with each other.

[0043] A general-purpose drum can be rotatably placed inside the threshing room (1).

[0044] Specifically, the general-purpose drum includes a rotating body (2) that rotates based on a rotating shaft (10) that extends in the rotational axis direction (arrow T) corresponding to the front and rear directions of the combine, and a plurality of threshing blades (3) that form screws arranged along spirals (S1, S2, S3) of a predetermined diameter on the outer surface of the rotating body (2). Accordingly, when the rotating body (2) rotates, grains such as beans, sorghum, and barley are threshed by the threshing blades (3) before threshing, and light chaff can be blown along the rotational axis direction (arrow T) to the chaff discharge port (1c) by the blowing force generated by the screw action formed by the threshing blades (3), so that the grains can be separated from the chaff without being excessively crushed, and the chaff can be smoothly transported to the chaff discharge port (1c) of the threshing chamber (1) by the threshing blades (3).

[0045] The threshing blade (3) may be formed in the shape of a panel that protrudes vertically for a predetermined length in the radial direction of the rotating body (2), is thin in the rotational axis direction (arrow T), and is wide in the circumferential direction (arrow F) of the rotating body (2). In particular, the threshing blade (3) is formed by a first member (3a) that extends along a predetermined spiral (S1, S2, S3) and extends in the circumferential direction (arrow F) of the rotating body (2), and a second member (3b) that extends from the first member (3b) in the circumferential direction (arrow F) of the rotating body (2).

[0046] More preferably, the first member (3a) has a width (L1) corresponding to the spiral direction that narrows as it extends radially outward from the rotating body (2), and the front end (E1) of the first member (3a) is formed as a curved shape bent with a predetermined curvature toward the rear end (E2) of the first member (3a) in the rotational direction of the rotating body (2), and the rear end (E2) of the first member (3a) can be formed as a straight shape perpendicular to the radial direction of the rotating body (2).

[0047] Therefore, after the first member (3a) is threshed, the light chaff separated from the grain is struck toward the chaff discharge port (1c), and a flow or blowing force is formed so that the chaff is discharged to the chaff discharge port (1c), and also pushed outward in the radial direction, so the chaff can be transported more smoothly toward the chaff discharge port (1c).

[0048] The second member (3b) is formed with a predetermined width (L2, L3) and extends from the rear end (E2) of the first member (3a) toward the direction opposite to the rotation of the rotation axis (10) with respect to the rotational direction of the rotating body (2), and can be extended in a state bent at a predetermined angle toward the chaff discharge port (1c) of the threshing chamber (1) in the direction of the rotational axis (arrow T). Accordingly, a flow can be formed by the second member (3b) so that chaff can be discharged more smoothly toward the chaff discharge port (1c).

[0049] Additionally, the second member (3b) may be composed of a first part (3c) and a second part (3d) in the radial direction. The first part (3c) may be in a shape that widens in the radial direction from the inner end (E3) on the side of the rotating body (2) to a predetermined position in the radial direction outward. Preferably, in the rotational direction of the rotating body (2), the rear end (E4) of the first part (3c) may be formed as a curved shape bent with a predetermined curvature. The second part (3d) may be in a shape that extends radially outward from the first part (3c) while maintaining a constant width. Accordingly, the second member (3b) is in a shape where the inner part on the side of the rotating body (2) in the radial direction is relatively removed, so that chaff is struck outward in the radial direction by the second member (3b) and can be smoothly discharged without getting caught on the threshing blade (3).

[0050] The above-mentioned threshing blade (3) is tilted at a predetermined angle with respect to the circumferential direction (arrow F) of the rotating body (2) so that a large threshing area can be secured, allowing grains and chaff to be easily separated, and a flow or fluid force can be formed so that chaff can be smoothly transported in the direction of the rotation axis (arrow T), thereby improving threshing efficiency and reducing the amount of foreign matter mixed with the grains, so that the sorting load can be reduced.

[0051] Meanwhile, the threshing blades (3) may be arranged along a plurality of spirals (S1, S2, S3). For example, the threshing blades (3) may be arranged along the first to third spirals (S1, S2, S3) and may be classified into first to third groups according to the arranged spirals (S1, S2, S3). The threshing blades (3) of the first to third groups may be arranged along the rotational axis direction (arrow T) at intervals smaller than the pitch of the screw corresponding to one rotation of the rotating body (2). For example, one threshing blade (3) of each of the first to third groups may be arranged within an interval corresponding to the pitch of the screw in the rotational axis direction (arrow T). Therefore, threshing efficiency can be improved, and threshing and chaff conveying can be carried out smoothly regardless of which direction the grains before threshing are introduced in the circumferential direction (arrow F) of the rotating body (2), and the conveying speed of chaff can be faster than that of a general screw, so that grains and chaff can be separated more reliably.

[0052] Meanwhile, a plurality of threshing blades (3) arranged in a row in the direction of the rotation axis (arrow T) can be integrally joined by welding or the like onto a support (4) that is arranged lengthwise in the direction of the rotation axis (arrow T) to form a single threshing blade unit. As an example, a connecting projection (3c) is formed protruding from the end of the threshing blade (3) on the side of the support (4), and a connecting hole (4b) into which the connecting projection (3c) of the threshing blade (3) is fitted is formed in the support (4), so that the threshing blade (3) can be more firmly fixed in a state where it is fitted and joined with the support (4).

[0053] A plurality of bases (4) are provided corresponding to a plurality of supports (13) and can be detachably coupled to the supports (13) in a one-to-one manner. Each base (4) can be formed in the shape of a 'C'-shaped panel that is long in the direction of the rotation axis (arrow T) like the supports (13) and has an insertion opening (4a) formed on the bottom surface into which the supports (13) are inserted. A fastening hole (4b) that penetrates the radial direction of the rotating body (2) can be formed in each base (4) to allow for detachability from the supports (13). Therefore, if some blades (3) are damaged due to wear, corrosion, etc., only one threshing blade unit in which the damaged blade (3) is located can be replaced, making maintenance easy.

[0054] The rotation axis (10) of the rotating body (2) is rotatably supported at both ends by bearings, etc. in the threshing chamber (1), and one end is connected to a driving part such as a motor so as to rotate counterclockwise.

[0055] The rotating body (2) includes first and second covers (11, 12) spaced apart at both ends of the rotation axis (10) in the rotation axis direction (arrow T).

[0056] The first and second covers (11, 12) are formed in the shape of discs corresponding to the diameter of the rotating body (2) and are coupled to the rotation axis (10) so as to be rotated integrally.

[0057] The rotating body (2) further includes a plurality of supports (13) to which the threshing blade (3) is attached.

[0058] A plurality of supports (13) are evenly spaced apart along a virtual circle corresponding to the diameter of the rotating body (2) with respect to the rotation axis (10) in the circumferential direction (arrow F) of the rotating body (2), and each support (13) is extended in the rotation axis direction (arrow T) between the first and second covers (11, 12) and is arranged parallel to the rotation axis (10).

[0059] The support member (13) includes a central part (13-1) positioned between the first and second driven brackets (16, 17), which will be described later, and the base (4), which is integrated with the threshing blade (3), in the radial direction of the rotating body (2). The central part (13-1) of the support member (13) can be formed in the shape of a 'C'-shaped panel, which is inserted into the insertion opening (4a) of the base (4) and has an inner surface that is open, into which the connecting part (16-3, 17-3) of the first and second driven brackets (16, 17), which will be described later, is inserted. A plurality of first fastening parts (13b) can be formed in the central part (13-1) of the support member (13) so that it can be attached to and detached from the base (4) by means of fastening members such as bolts. The first fastening member (13b) of the support member (13) can penetrate radially and communicate with the insertion opening (13a) of the support member (13). Multiple first fastening members (13b) of the support member (13) may be formed at predetermined intervals along the rotational axis direction (arrow T).

[0060] Additionally, the support member (13) may further include a pair of panel-shaped wing portions (13-2) extending to both sides of the center (13-1) of the support member (13) in the circumferential direction (arrow F) of the rotating body (2). The center (13-1) of the support member (13) is positioned in the radial direction of the rotating body (2), and the pair of wing portions (13-2) of the support member (13) are extended in a bent state relative to the center (13-1) of the support member (13) to form a triangular insertion opening (13c) into which the extension portions (16-2, 17-2) of the first and second driven brackets (16, 17) to be described later are inserted. A second fastening member (13d) may be formed on each wing portion (13-2) of the support member (13) so as to be detachably attached to the third cover (14) to be described later. The second fastening member (13d) of the support (13) can be formed in multiple numbers at predetermined intervals along the rotational axis direction (arrow T).

[0061] The rotating body (2) further includes a bracket that is connected to each rotation axis (10) and supports a plurality of supports (13).

[0062] The bracket includes a driving bracket (15) that is coupled to a rotation axis (10) and rotates as a whole, and a first driven bracket (16) that is joined to one side of the driving bracket (15) in the direction of the rotation axis (arrow T) and is coupled to a support member (13) to support the support member (13).

[0063] Multiple drive brackets (15) can be spaced apart in the direction of rotation axis (arrow T).

[0064] The drive bracket (15) may be formed in the shape of a triangular panel, and a fastener (15a) may be formed at each vertex of the triangle to be joined to the first drive bracket (16) by means of a bolt, etc.

[0065] The first driving bracket (16) may be provided in multiple numbers corresponding to the multiple driving brackets (15).

[0066] The first type bracket (16) can be formed in the shape of a panel.

[0067] The first driving bracket (16) may include a polygonal center (16-1) formed larger than the rotation axis (10) and having a center hole (16a) that is fitted into the rotation axis (10) and connected to the driving bracket (15), a plurality of extension parts (16-2) protruding from each side of the center (16-1) in the radial direction of the rotating body (2), and a plurality of connecting parts (16-3) protruding from the ends of each extension part (16-2) in the radial direction of the rotating body (2) and connected to the support (13).

[0068] The center (16-1) of the first drive bracket (16) may be formed in a hexagon as illustrated, but is not necessarily limited thereto. As the number of polygonal sides of the center (16-1) of the first drive bracket (16) increases, the spacing between the threshing blades (3) in the spiral direction (S1, S2, S3) becomes narrower, but the overall number of components and weight also increase. Therefore, the polygon of the center (16-1) of the first drive bracket (16) can be determined by considering the size of the rotating body (2) and preventing shaking during rotation.

[0069] The center hole (16a) of the first driving bracket (16) can be formed in an approximately inverted triangle shape with respect to the triangular driving bracket (15).

[0070] The extension (16-2) of the first driven bracket (16) is formed in a triangular shape that narrows toward the coupling part (16-3) of the first driven bracket (16) in the radial direction of the rotating body (2) like a star shape, so that it can be inserted into the insertion opening (13c) formed by a pair of wing parts (13-2) of the support (13).

[0071] The connecting portion (16-3) of the first type bracket (16) is provided in the shape of a square projection corresponding to the insertion opening of the center (13-1) of the support (13) and is inserted into the insertion opening (13a) formed by the center (13-1) of the support (13), but is formed shorter than the insertion opening (13a) formed by the center (13-1) of the support (13) in the radial direction of the rotating body (2), so that a space can be secured in which the support (13) and the base (4) can be fastened by a fastening member (100) such as a bolt as described above.

[0072] The rotating body (2) further includes a plurality of third covers (14) that shield between the supports (13) and the supports (13) in the circumferential direction (arrow F) of the rotating body (2).

[0073] The third cover (14) may be formed as a 'V'-shaped panel corresponding to the shape between the extension (16-2) of the first driven bracket (16) adjacent in the circumferential direction (arrow F) of the rotating body (2). That is, the third cover (14) may include first and second cover parts (14-1, 14-2) that are connected to each other in a 'V' shape and are connected to the outer surface of the wing part (13-2) of the support (13) by means of fastening members such as bolts. Accordingly, the rotating body (2) may be formed in a star shape corresponding to the shape of the first driven bracket (16), and a concave groove (2a) may be formed in the radial direction of the rotating body (2), so that a large amount of debris can be smoothly transported.

[0074] Additionally, the bracket may further include a second driven bracket (17) that supports a support member (13) by being joined in the direction of rotation (arrow T) to a second cover (12) corresponding to the end of the rotating body (2).

[0075] The center hole (17a) of the second driven bracket (17) can be formed to be larger than the rotation axis (10) and large enough to allow the driving bracket (15) to pass through. The center hole (17a) of the second driven bracket (17) can be formed in an uneven shape along the circumferential direction (arrow F).

[0076] The rotating body (2) may further include a screw rotor (18) that is positioned between the first cover and the support (13) in the rotational axis direction (arrow T) and rotates together. The screw rotor (18) may consist of a body (18-1) coupled to the rotational axis (10) and a screw blade (18-2) formed on the outer surface of the body (18-1). The body (18-1) of the screw rotor (18) is formed in a wedge shape such that its diameter expands in the spiral direction relative to the rotational axis direction (arrow T), so that grains such as beans, sorghum, and barley introduced into the threshing chamber (1) before threshing can be smoothly transported toward the threshing blade (3). The rear end of the screw rotor (18) in the rotational axis direction (arrow T) may be joined to a drive bracket (15) in the rotational axis direction (arrow T) and secured by a fastening member.

[0077] The screw blades (18-2) may also be provided in multiple rows arranged along multiple spirals. For example, the screw blades (18-2) may be provided in three rows of screw blades (18-2) arranged along three spirals. In particular, by connecting multiple spirals (S1, S2, S3) of the threshing blades (3) to the extension of the multiple spirals (S4, S5, S6) of the screw rotor (18) described above, the grains before threshing can be smoothly transferred from the screw rotor (18) to a general-purpose drum.

[0078] A chaff guide (19) is disposed on the outer surface of the rotating body (2) and is positioned at the end of the outer surface of the rotating body (2) opposite the chaff discharge port of the threshing chamber (1) in the radial direction of the rotating body (2), and guides the chaff transported to the end of the rotating body (2) along the rotational axis direction (arrow T) to the chaff discharge port of the threshing chamber (1).

[0079] The dry guide (19) includes a guide unit (19') composed of a plurality of guide blades (19-1) arranged in a line along the rotational axis direction (arrow T).

[0080] A plurality of guide units (19') may be arranged in a line at predetermined intervals along the circumferential direction (arrow F) of the rotating body (2). For example, as illustrated, when six supports (13) are arranged along the circumferential direction (arrow F) of the rotating body (2), each guide unit (19') may also be composed of six and arranged on each support (13).

[0081] The guide blade (19-1) of each guide unit (19') may be formed in the shape of a rod that protrudes vertically for a predetermined length in the radial direction of the rotating body (2), unlike the threshing blade (3) described above, so that chaff can be smoothly discharged through a chaff discharge port opened in the radial direction of the rotating body (2). Each guide blade (19-1) is detachably coupled to a fastening hole formed in each support (13) like a bolt fastening, so that the chaff guide (19) can be easily replaced in an optimized form according to the type of grain as described below, and thus the threshing rotating body of the present invention can be universally used for various types of grains.

[0082] The chaff guide (19) shown in the above-mentioned FIGS. 1 to 8 is optimal for discharging chaff from beans.

[0083] Referring to FIGS. 9 and 10, in the case of sorghum, each guide unit of the chaff guide further includes a first guide plate (19-2), so that chaff remaining after sorghum threshing can be discharged more easily.

[0084] The first guide plate (19-2) may include a guide portion (101) positioned in front of a plurality of guide blades (19-1) in the rotational direction of the rotating body (2), and a support portion (102) interposed between the plurality of guide blades (19-1) and the rotating body (2), i.e., the support (13).

[0085] The guide section (101) may be formed of a flat panel that is long in the rotational axis direction (arrow T), perpendicular to the radial direction of the rotating body (2), and has both inner and outer surfaces flat in the circumferential direction (arrow F) of the rotating body (2), corresponding to a plurality of guide blades (19-1) arranged in the rotational axis direction (arrow T).

[0086] The support member (102) is formed long in the direction of rotation (arrow T) so as to support a plurality of guide blades (19-1) arranged in the direction of rotation (arrow T), and a fastening hole (not shown) may be formed so that each guide blade (19-1) can pass through the support member (102) and be detachably fastened to the support member (13).

[0087] Additionally, the first guide plate (19-2) may further include a partition wall (103) positioned behind the guide portion (101) in the rotational direction of the rotating body (2) and positioned between guide blades (19-1) spaced apart in the rotational axis direction (arrow T). The width of the partition wall (103) in the circumferential direction (arrow F) of the rotating body (2) may be constant in the case of the support portion (102) side in the radial direction of the rotating body (2), and gradually decrease in the shape of the remaining portion as it goes outward in the radial direction of the rotating body (2).

[0088] Referring to FIGS. 11 and 12, in the case of barley, each guide unit (19') of the chaff guide (19) further includes a second guide plate (19-3), and each second guide plate (19-3) includes a guide portion (111), a support portion (112), and a partition wall portion (113), as in the first guide plate described above, and may further include a guide extension portion (114).

[0089] The guide extension (114) extends radially from the outer end of the guide portion (111) in the radial direction of the rotating body (2), is bent at a predetermined angle in the direction opposite to the rotation of the rotating body (2) relative to the guide portion (111) and arranged in an inclined shape, and can be formed in a wavy shape along the rotation axis direction (arrow T).

[0090] The chaff remaining after barley threshing can be discharged more easily by the guide extension part (114) described above.

[0091] The technical concepts described in the embodiments of the present invention as described above may be implemented independently or in combination with one another. Furthermore, although the present invention has been described through embodiments described in the drawings and the detailed description of the invention, this is merely illustrative, and various modifications and equivalent alternative embodiments are possible therefrom for those skilled in the art to which the present invention pertains. Accordingly, the technical scope of protection of the present invention should be determined by the appended claims. Explanation of the symbols

[0092] 1; Threshing room 2; Rotating body 3; Threshing blade 4; Support 10; rotation axis 11; first cover 12; Second cover 13; Support 13-1; Center 13-2; Wing 14; 3rd cover 15; drive bracket 16; First driven bracket 17; Second driven bracket 18; Screw rotor 19; Debris guide

Claims

Claim 1 A universal drum that is rotatable; a threshing chamber in which the universal drum is disposed internally, and inlet and chaff discharge outlet are provided spaced apart from each other along the rotational axis direction of the universal drum, and grain discharge outlet is provided spaced apart from the universal drum in the rotational radius direction of the universal drum; a rotating body comprising a threshing mesh frame disposed at the grain discharge outlet and having a plurality of grain discharge holes formed therein, wherein the universal drum is rotated about a rotational axis extending in the rotational axis direction; and a first member comprising a plurality of threshing blades arranged along a spiral of a predetermined diameter on the outer surface of the rotating body to form a plurality of screws, wherein each threshing blade is arranged along the spiral and has a width corresponding to the spiral direction that narrows as it extends radially outward from the universal drum, wherein the front end is formed as a curved shape bent toward the rear end in the rotational direction of the rotating body, and the rear end is formed as a straight shape perpendicular to the radial direction of the universal drum. A general-purpose grain threshing machine comprising a second member that is bent in the rotational direction of the rotating body from the rear end of the first member toward the chaff discharge port in the rotational axis direction, and has a first part that widens in the radial direction from the inner end of the rotating body side toward the radially outer side to a predetermined position, and a second part that extends radially outer from the first part while maintaining a constant width. Claim 2 delete Claim 3 delete Claim 4 A general-purpose grain threshing machine according to claim 1, wherein the rotating body includes a screw rotor that is arranged on the inlet side with respect to the plurality of threshing blades in the direction of the rotation axis and rotates together, the screw rotor is formed in a wedge shape in which the diameter expands as it moves toward the spiral conveying direction with respect to the direction of the rotation axis, and the spiral of the threshing blade is connected on the spiral extension line of the screw rotor. Claim 5 A general-purpose grain threshing machine according to claim 1 or claim 4, wherein the threshing net frame is formed in a cylindrical shape surrounding the rotating body or in an arc shape curved in the circumferential direction of the rotating body, and has a plurality of perforations formed therein; and a plurality of ribs protruding in a ring shape or arc shape toward the rotating body from the inner surface of the perforated plate and spaced apart from each other along the rotational axis direction at a predetermined interval, wherein the threshing net frame is divided into a plurality of pieces and can be assembled, the perforated plate further includes side flanges bent radially outward at both circumferential ends to form a circumferential connection, and the perforated plate further includes end flanges that contact each other along the rotational axis direction at both ends to form a rotational axis connection. Claim 6 A general-purpose grain threshing machine according to claim 5, wherein the threshing net frame is formed in the shape of an arc, and one threshing net frame is arranged along the circumferential direction of the rotating body or two or more threshing net frames are connected along the circumferential direction of the rotating body, and one threshing net frame is arranged along the rotational axis direction or two or more threshing net frames are connected along the rotational axis direction. Claim 7 In claim 1, the rotating body comprises: a rotating shaft; first and second covers spaced apart from the rotating shaft in the direction of the rotating shaft; a plurality of supports each spaced apart from the rotating shaft between the first and second covers and spaced apart along the circumferential direction of the rotating body with respect to the rotating shaft, to which the threshing blade is coupled; a bracket each coupled to the rotating shaft and supporting the plurality of supports; and a plurality of third covers shielding between the supports in the circumferential direction of the rotating body, wherein the bracket each comprises a plurality of driving brackets spaced apart in the direction of the rotating shaft and coupled to the rotating shaft; and a plurality of first driven brackets joined to one surface of the driving bracket in the direction of the rotating shaft and supporting the supports, wherein the first driven bracket has a center hole formed therein that is fitted into the rotating shaft and a polygonal center that is fastened to the driving bracket; and a plurality of extensions protruding from each side of the center in the radial direction of the rotating body. A general-purpose grain threshing machine comprising a plurality of connecting parts that protrude from the ends of each of the extensions in the radial direction of the rotating body and are coupled to the support, wherein the extension of the first driven bracket has a shape that narrows in a triangular form toward the connecting part of the first driven bracket, and the support includes a central part that forms an insertion opening into which the connecting part of the first driven bracket is inserted, and a pair of wing parts that extend from both ends of the central part of the support in the circumferential direction of the rotating body and form an insertion opening into which the extension of the first driven bracket is inserted, and the third cover is connected in a 'V' shape and includes first and second cover parts that are connected to the wing part of the support in a state in contact with the outer surface of the wing part of the support. Claim 8 In claim 1, the apparatus further comprises a chaff guide disposed at the end of the outer surface of the rotating body facing the chaff discharge port of the threshing chamber in the radial direction of the rotating body to guide chaff to the chaff discharge port of the threshing chamber, wherein the chaff guide comprises a plurality of guide blades arranged in a row along the rotational axis direction and a plurality of guide units spaced apart along the circumferential direction of the rotating body, wherein the guide blades of each guide unit are arranged in a row along the circumferential direction of the rotating body and each is in a form that protrudes vertically in the radial direction of the rotating body, and each guide unit further comprises first and second guide plates that are disposed together with the guide blades or interchangeably depending on the type of grain, wherein the first and second guide plates each comprise a guide portion disposed behind the plurality of guide blades in the rotational direction of the rotating body and a support portion interposed between the plurality of guide blades and the rotating body, and the second guide plate extends from the outer end of the guide portion in the radial direction of the rotating body to the radial direction of the rotating body A general-purpose grain threshing machine characterized by further comprising a guide extension portion that is extended, is bent at a predetermined angle in the rotational direction of the rotating body with respect to the guide portion and arranged in an inclined shape, and is formed in a wavy shape along the rotational axis direction.

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