A split type knife tooth rod for a thresher

Abstract

The utility model discloses a kind of split type cutter tooth rods for thresher, the split type cutter tooth rod for thresher is set to the split type structure by installation part and cutter tooth plate, so that when different kinds of crops threshing need to be carried out, only cutter tooth plate on mounting plate needs to be replaced, without cutter tooth plate and installation part overall dismounting, it is convenient for user to replace quickly, reduce the difficulty of installation and dismounting when cutter tooth rod faces different crops and needs to be replaced.In addition, for the threshing needs of different crops, only cutter tooth plate with different specifications of cutter tooth needs to be prepared, without preparing multiple complete cutter tooth rods, effectively reduce the equipment investment when different crops are threshed, to reduce the actual use cost of thresher.

Description

Technical Field

[0001] This utility model relates to the field of agricultural machinery, specifically to a split-type blade rod for a thresher. Background Technology

[0002] Threshing machines are very common agricultural machinery and are widely used in the harvesting of various crops such as beans, rice, sorghum, wheat, and rapeseed.

[0003] The basic working principle of existing threshing machines is that the cutting rod rotates at high speed in the threshing chamber, and the cutting rod beats the crop pods to thresh them. The crop stalks are cut and crushed, and then the threshed crop grains are screened out through the screen and fall into the collection bin below the screen to complete the initial threshing process.

[0004] In this process, the threshing rod serves as both a threshing component and a rotating component. Furthermore, the threshing rod and the blades are an integral structure, meaning the size, distribution, and type of the blades are all fixed parameters. When the threshing rod needs to be replaced for different crops, the top cover of the threshing machine must be opened, the threshing rod removed from the drive unit, and a new threshing rod installed. This entire installation and disassembly process is extremely cumbersome. Moreover, existing threshing rods are generally connected using bolts during installation and disassembly. However, these bolts are usually located on the side of the threshing rod end, making them easily obstructed by the inner wall of the threshing chamber, further hindering installation and disassembly.

[0005] To address this issue, a split-type blade rod for threshers is proposed. Utility Model Content

[0006] This invention provides a split-type blade rod for a threshing machine to solve the problem of difficult installation and disassembly of blade rods in the prior art.

[0007] Specifically, this utility model is: a split-type blade rod for a threshing machine, wherein the threshing machine includes a threshing chamber, and the split-type blade rod includes a mounting part and a blade plate; the mounting part includes: a mounting rod, a mounting plate, and a rotating shaft;

[0008] There are two mounting plates, which are arranged in parallel and opposite to each other. The mounting plates are circular plate structures.

[0009] There are multiple mounting rods, which are arranged around the axis of the mounting plate between the two mounting plates. The two ends of the mounting rods are connected to the two mounting plates respectively. The cross-sectional shape of the mounting rod is square, and the side of the mounting rod away from the axis of the mounting plate is the mounting surface.

[0010] There are two rotating shafts, which are respectively set on the opposite sides of two mounting plates, and the axis of the rotating shafts coincides with the axis of the mounting plates. The mounting part is rotatably set in the threshing chamber through the two rotating shafts.

[0011] The blade is detachably mounted on the mounting surface and is used to strike crops for threshing and to cut crop straw.

[0012] Specifically, the cutting edge plate includes a first cutting edge plate and a second cutting edge plate;

[0013] The upper surface of the first blade plate is provided with multiple teeth for striking crops, and the lower surface of the first blade plate is provided with a first opening; the first blade plate is secured to the mounting rod through the first opening.

[0014] The upper surface of the second blade plate is provided with multiple blades for cutting crop stems, and the lower surface of the second blade plate is provided with a second opening; the second blade plate is secured to the mounting rod through the second opening;

[0015] Mounting holes are provided on the mounting surface; multiple bolt holes are provided on both the first and second cutter teeth plates, and connecting bolts pass through the bolt holes and are screwed into the mounting holes to connect the first cutter teeth plate and / or the second cutter teeth plate to the mounting rod.

[0016] Specifically, the spacing between adjacent toothed bars gradually increases along the axial direction of the mounting rod; the spacing between adjacent blades also gradually increases along the axial direction of the mounting rod.

[0017] Specifically, the toothed bar is U-shaped, with its opening facing the first cutting tooth plate. Both ends of the toothed bar are fixed to the two sides of the first cutting tooth plate, and the two ends of the toothed bar are not in the same vertical plane.

[0018] Specifically, the blade has cutting edges on both sides corresponding to the second cutting tooth plate, and the long axis of the second cutting tooth plate forms an angle with the plane on which the blade is located.

[0019] Specifically, the distribution of the toothed rods on the first toothed plate is the same as the distribution of the blades on the second toothed plate; it also includes an auxiliary plate disposed on the inner wall of the threshing chamber, the auxiliary plate being provided with a plurality of secondary blades that respectively cooperate with the toothed rods and the blades.

[0020] Compared with the prior art, this utility model has the following advantages and beneficial effects:

[0021] This invention features a modular design for the threshing bar, consisting of a mounting section and a serrated plate. This allows for easy replacement of only the serrated plate on the mounting plate when threshing different types of crops, eliminating the need to disassemble the entire threshing bar and mounting section. This simplifies installation and disassembly, reducing the difficulty of changing the threshing bar for different crops. Furthermore, only multiple serrated plates with different serrated tooth specifications are needed to meet the threshing requirements of different crops, eliminating the need for multiple complete threshing bars. This effectively reduces equipment investment for threshing different crops, thereby lowering the actual operating cost of the threshing machine. Attached Figure Description

[0022] Figure 1 This is a schematic diagram of the device structure of this utility model.

[0023] The labels in the diagram are as follows: Aggregate bin—1;

[0024] Threshing bin—2; Screen—201;

[0025] Mounting rod—301; Mounting plate—302; Rotary shaft—303;

[0026] First cutter tooth plate—401; Tooth bar—402;

[0027] Second blade plate—501; Blade plate—502;

[0028] Auxiliary plate—601; Sub-blade plate—602. Detailed Implementation

[0029] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present utility model, so as to provide a better understanding of the concept of the present utility model, the technical problem solved, the technical features constituting the technical solution and the technical effects brought about.

[0030] like Figure 1 As shown, a split-type blade rod for a threshing machine is disclosed. The threshing machine includes a threshing chamber 2, and the split-type blade rod includes a mounting part and a blade plate. The mounting part includes:

[0031] There are two mounting plates 302, which are arranged in parallel and opposite to each other. The mounting plates 302 are circular plate structures.

[0032] There are multiple mounting rods 301, which are arranged around the axis of the mounting plate 302 between the two mounting plates 302. The two ends of the mounting rods 301 are respectively connected to the two mounting plates 302. The cross-sectional shape of the mounting rods 301 is square, and the side of the mounting rods 301 that is away from the axis of the mounting plate 302 is the mounting surface.

[0033] There are two rotating shafts 303, which are respectively set on the opposite sides of the two mounting plates 302, and the axis of the rotating shaft 303 coincides with the axis of the mounting plate 302. The mounting part is rotatably set in the threshing chamber 2 through the two rotating shafts 303.

[0034] The blade is detachably mounted on the mounting surface and is used to strike crops for threshing and to cut crop straw.

[0035] In this invention, the threshing chamber 2 is detachably installed in the collection chamber 1. A screen 201 is installed at the bottom of the threshing chamber 2. One end of the rotating shaft 303 passes through the threshing chamber 2 and the collection chamber 1 in sequence and extends outward. The mounting part is rotatably installed in the threshing chamber 2 via two rotating shafts 303. The drive motor is connected to the rotating shafts 303 to drive the mounting part to rotate inside the threshing chamber 2. The drive motor is usually located outside the collection chamber 1 and is connected to the rotating shafts 303 via gears or belts. When the drive motor is connected to the rotating shafts 303 via gears, the driving end of the drive motor and the rotating shaft 303 are respectively provided with meshing gears. When the drive motor is connected to the rotating shafts 303 via belts, the driving end of the drive motor and the rotating shaft 303 are respectively provided with pulleys, and the belt is wrapped around the two pulleys to achieve the transmission connection between the drive motor and the rotating shaft 303. Of course, the drive motor can also be located between the collection chamber 1 and the threshing chamber 2. The blade plate is detachably mounted on the mounting rod 301. When the blade rod needs to be replaced, only the blade plate needs to be replaced, without replacing the entire blade rod. This simplifies the replacement process and effectively reduces the cost of the device and its operation, resulting in high economic benefits. It should be noted that the blade plate is available in various specifications to meet the requirements of different crops.

[0036] As a preferred embodiment, such as Figure 1 As shown, the cutting tooth plate includes a first cutting tooth plate 401 and a second cutting tooth plate 501;

[0037] The upper surface of the first blade plate 401 is provided with a plurality of toothed rods 402 for striking crops, and the lower surface of the first blade plate 401 is provided with a first opening; the first blade plate 401 is engaged with the mounting rod 301 through the first opening.

[0038] The upper surface of the second blade plate 501 is provided with a plurality of blades 502 for cutting crop stems, and the lower surface of the second blade plate 501 is provided with a second opening; the second blade plate 501 is engaged with the mounting rod 301 through the second opening.

[0039] The mounting surface is provided with mounting holes; the first cutter plate 401 and the second cutter plate 501 are each provided with multiple bolt holes, and the connecting bolts pass through the bolt holes and are screwed into the mounting holes to realize the connection between the first cutter plate 401 and / or the second cutter plate 501 and the mounting rod (301).

[0040] In this embodiment, a specific toothed plate structure is provided, wherein the first toothed plate 401 is provided with a toothed bar 402, which is mainly used to strike crops to achieve threshing, and the second toothed plate 501 is provided with a blade 502, which is mainly used to cut crop stems;

[0041] During installation and disassembly, the downward-bent portions on both sides of the first and second cutter plates 401 and 501 (both sides of the first and second openings) can be used for quick positioning, facilitating rapid adjustment of the positions of the first and second cutter plates 401 and 501, alignment of bolt holes and mounting holes, and also protecting the mounting rod 301 to prevent deformation of the mounting rod 301 due to long-term use.

[0042] By using connecting bolts to mount the first cutter plate 401 and the second cutter plate 501 onto the mounting surfaces of different mounting rods 301, the difficulty of replacing the cutter plates can be effectively reduced. Furthermore, bolt installation and removal on the mounting surface effectively avoids various obstructions at the cutter rod mounting positions in existing technologies, further facilitating the installation and removal of the cutter plates and reducing installation and removal difficulty. Alternatively, positioning screws can be installed on the mounting surface to quickly position the first cutter plate 401 and the second cutter plate 501. Locking nuts are then screwed into the positioning screws to lock the first cutter plate 401 and the second cutter plate 501. This installation method is not affected by various obstructions at the cutter rod mounting positions in existing technologies, making the mounting of the cutter plates even more convenient.

[0043] As a further embodiment, such as Figure 1 As shown, the spacing between adjacent toothed bars 402 gradually increases along the axial direction of the long mounting rod 301 of the first cutter plate 401; the spacing between adjacent cutter plates 502 gradually increases along the axial direction of the mounting rod 301.

[0044] In this embodiment, by optimizing the spacing between the toothed bar 402 and the toothed plate 502, the distribution of the toothed bar 402 and the blade 502 during the threshing of crops by the first blade 401 and the second blade 501 is made more reasonable. When the crops enter the threshing chamber 2 intact, since the plants are intact, they enter from the end with the larger spacing, undergo initial cutting, and are then cut by the blades 502 with the smaller spacing; the striking process of the toothed bar 402 is similar.

[0045] As a further embodiment, such as Figure 1As shown, the toothed bar 402 is U-shaped, with its opening facing the first cutting tooth plate 401. The two ends of the toothed bar 402 are respectively fixed to the two sides of the first cutting tooth plate 401, and the two ends of the toothed bar 402 are not in the same vertical plane.

[0046] In this embodiment, by setting the toothed bar 402 as a U-shape with its opening facing downwards, and the width of the end of the toothed bar 402 away from the first toothed plate 401 is smaller than the width of the end of the toothed bar 402 close to the first toothed plate 401, that is, the width of the open end of the toothed bar 402 is greater than the width of the closed end of the toothed bar 402, the two sides of the toothed bar 402 become inclined bars, and a "V" shape with a larger top and a smaller bottom is formed between the two toothed bars 402, which makes it easier for crops to fall between the two toothed bars 402, thereby increasing the contact area between the toothed bar 402 and the crops, and achieving the purpose of speeding up the threshing process. By setting the two ends of the toothed bar 402 to be not in the same vertical plane, the vertical projection of the toothed bar 402 on the first toothed plate 401 onto the mounting rod 301 is not perpendicular to the axis of the mounting rod 301, but rather has an inclined angle. This facilitates the application of a pushing force along the axis of the mounting rod 301 to the crop during the striking process, allowing the crop to move at any time within the threshing chamber 2, making it easier for the toothed bar 402 to strike the crop comprehensively and achieve more thorough threshing. When the inclined angle is 0°, the striking function of the toothed bar 402 can still be performed normally, but it cannot apply a pushing force along the axis of the mounting rod 301 to the crop. Therefore, the installation scheme of the toothed bar 402 when the inclined angle is not 0° is preferred.

[0047] As a further embodiment, such as Figure 1 As shown, the blade 502 has cutting edges on both sides corresponding to the second blade plate 501, and the major axis of the second blade plate 501 forms an angle with the plane where the blade 502 is located.

[0048] In this embodiment, the blade 502 has cutting edges on both sides, allowing the rotating shaft 303 to rotate in both forward and reverse directions. In actual use, the rotation direction can be periodically switched by the drive motor, resulting in a more thorough cut of crop straw. The arrangement of the blade 502, with one side fixed to the front of the second blade 501 along the axial direction and the other side fixed to the rear of the second blade 501 along the axial direction, applies a pushing force along the axial direction of the mounting rod 301 to the crop during cutting. This causes the crop to move within the threshing chamber 2 at any time, facilitating a more comprehensive and thorough cut of the crop straw by the blade 502.

[0049] As a further embodiment, such as Figure 1As shown, the toothed rod 402 is distributed on the first toothed plate 401 and the blade 502 is distributed on the second toothed plate 501 in the same way; it also includes an auxiliary plate 601 disposed on the inner wall of the threshing chamber 2, and the auxiliary plate 601 is provided with a plurality of secondary blades 602 that respectively cooperate with the toothed rod 402 and the blade 502.

[0050] In this embodiment, by setting an auxiliary plate 601 inside the threshing chamber 2, and setting a secondary blade 602 on the auxiliary plate 601 to cooperate with the toothed rod 402 and the blade 502, when the toothed rod 402 and the blade 502 cut crop straw, the secondary blade 602 can be used as the force-bearing position inside the threshing chamber 2. The toothed rod 402 drives the straw to strike the secondary blade 602, and the secondary blade 602 is used for cutting. At the same time, the blade 502 also applies force, so that the straw impacts the secondary blade 602 for cutting. This achieves the purpose of cutting the straw at the same time by the secondary blade 602 and the blade 502, effectively improving the cutting efficiency. The same principle applies when the rotating shaft 303 rotates in the opposite direction. During the process of the toothed rod 402 striking the crop, the secondary blade 602 can also serve as a structure to provide support for the crop, thereby effectively improving the threshing effect.

[0051] The terms "connection" and "fixing" appearing in this utility model description can refer to fixed connection, processing and forming, welding, or mechanical connection. The specific meaning of the above terms in this utility model should be understood according to the specific circumstances.

[0052] In the description of this utility model, the terms "center", "upper", "lower", "horizontal", "inner", "outer", etc., are used only to indicate the orientation or positional relationship for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or component referred to must have a specific orientation, and therefore should not be construed as a limitation of this utility model.

[0053] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of this utility model, and not to limit it; although the utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some or all of the technical features; and these modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of this utility model.

Claims

1. A split-type blade for a threshing machine, the threshing machine comprising a threshing chamber (2), characterized in that, The split-type cutter bar includes a mounting part and a cutter plate; the mounting part includes: a mounting rod (301), a mounting plate (302), and a rotating shaft (303). There are two mounting plates (302), which are arranged in parallel and opposite directions. The mounting plates (302) are circular plate structures. There are multiple mounting rods (301). Multiple mounting rods (301) are arranged around the axis of the mounting plate (302) between the two mounting plates (302). The two ends of the mounting rods (301) are connected to the two mounting plates (302) respectively. The cross-sectional shape of the mounting rods (301) is square. The side of the mounting rod (301) that is away from the axis of the mounting plate (302) is the mounting surface. There are two rotating shafts (303). The two rotating shafts (303) are respectively set on the opposite sides of the two mounting plates (302), and the axis of the rotating shaft (303) coincides with the axis of the mounting plate (302). The mounting part is rotatably set in the threshing chamber (2) through the two rotating shafts (303). The blade is detachably mounted on the mounting surface and is used to strike crops for threshing and to cut crop straw.

2. The split-type knife bar for a thresher as described in claim 1, characterized in that, The blade plate includes a first blade plate (401) and a second blade plate (501). The upper surface of the first blade plate (401) is provided with a plurality of toothed rods (402) for striking crops, and the lower surface of the first blade plate (401) is provided with a first opening; the first blade plate (401) is engaged with the mounting rod (301) through the first opening; The upper surface of the second blade plate (501) is provided with multiple blades (502) for cutting crop stems, and the lower surface of the second blade plate (501) is provided with a second opening; the second blade plate (501) is secured to the mounting rod (301) through the second opening; Mounting holes are provided on the mounting surface; multiple bolt holes are provided on both the first cutter plate (401) and the second cutter plate (501). The connecting bolts pass through the bolt holes and are screwed into the mounting holes to connect the first cutter plate (401) and / or the second cutter plate (501) with the mounting rod (301).

3. The split-type knife bar for a thresher as described in claim 2, characterized in that, The spacing between adjacent toothed bars (402) gradually increases along the axial direction of the mounting rod (301); the spacing between adjacent blades (502) gradually increases along the axial direction of the mounting rod (301).

4. A split-type knife bar for a thresher as described in claim 2, characterized in that, The toothed bar (402) is U-shaped, with its opening facing the first cutting tooth plate (401). The two ends of the toothed bar (402) are respectively fixed to the two sides of the first cutting tooth plate (401), and the two ends of the toothed bar (402) are not in the same vertical plane.

5. A split-type knife bar for a thresher as described in claim 2, characterized in that, The blade (502) has cutting edges on both sides corresponding to the second blade (501), and the long axis of the second blade (501) has an angle with the plane where the blade (502) is located.

6. A split-type knife bar for a thresher as described in claim 2, characterized in that, The distribution of the toothed rod (402) on the first toothed plate (401) is the same as the distribution of the blade (502) on the second toothed plate (501); it also includes an auxiliary plate (601) disposed on the inner wall of the threshing chamber (2), and the auxiliary plate (601) is provided with a plurality of secondary blades (602) that cooperate with the toothed rod (402) and the blade (502) respectively.

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