A flexible micro-motion threshing device

Abstract

The present invention is applicable to the technical field of agricultural production equipment and provides a flexible micro-motion threshing device, comprising a drum shaft and a drum, and further comprising: a flexible threshing module, wherein the flexible threshing module comprises a plurality of flexible threshing units mounted in a circular arrangement on the drum, each flexible threshing unit comprising a plurality of flexible threshing mechanisms mounted on the drum equidistantly along the axial direction of the drum shaft; the flexible threshing mechanism comprising a fixed base, on which an elastic hinge is mounted, wherein the elastic hinge comprises a lower plate, on which an upper plate is mounted via a latch, wherein a torsion spring is further provided on the latch, wherein a threshing element is mounted on the upper plate, and a conical spring is further provided between the fixed base and the upper plate. The device can be applied to different crops, has a wide range of applications, and can reduce the possibility of grain breakage caused by structural rigidity during the threshing process.

Description

Technical Field

[0001] The invention belongs to the technical field of agricultural production equipment, and in particular relates to a flexible micro-motion threshing device. Background Art

[0002] Crop harvesting relies primarily on mechanized harvester operations, with threshing being a critical step in the harvesting process. The quality of the threshed material is crucial for evaluating harvester performance. A thresher is a machine that separates crop grains from the ear and plant. Thresher performance is typically measured in terms of threshing efficiency and grain breakage rate.

[0003] The threshing drum, a key structure in the threshing process, is equipped with a threshing mechanism. Existing threshing mechanisms are typically made of a rigid, integrally cast material or a rigid material coated with a flexible material like rubber. These mechanisms are unable to adapt to different crops during the threshing process, applying flexible micro-dynamics to increase threshing efficiency and reduce grain breakage.

[0004] Therefore, designing a threshing device with adaptive flexible micro-motion effect is an urgent problem to be solved in the field of agricultural mechanization operations. Summary of the Invention

[0005] The purpose of the embodiments of the present invention is to provide a flexible micro-motion threshing device, aiming to solve the problems raised in the above background technology.

[0006] The embodiment of the present invention is implemented as follows: a flexible micro-motion threshing device includes a drum shaft and a drum, wherein the drum is mounted on the drum shaft through a supporting web; and further includes:

[0007] A flexible threshing module, comprising a plurality of flexible threshing units mounted in a circular arrangement on a drum, each flexible threshing unit comprising a plurality of flexible threshing mechanisms mounted on the drum at equal distances along the axial direction of the drum axis;

[0008] The flexible threshing mechanism includes a fixed base installed on the drum, an elastic hinge installed on the fixed base, the elastic hinge including a lower page plate installed on the fixed base, a latch installed on the lower page plate, and an upper page plate rotatably installed on the latch, a torsion spring is also provided on the latch, and the two ends of the torsion spring are respectively connected to the upper page plate and the lower page plate, a threshing element is installed on the upper page plate, a conical spring is also installed on the fixed base, and the end of the conical spring away from the fixed base is connected to the upper page plate.

[0009] According to a further technical solution, four groups of flexible threshing units are provided.

[0010] According to a further technical solution, the fixed base is mounted on the drum by screws, which enables convenient assembly and disassembly of the fixed base, and an inner lining fixing plate is further provided at the connection between the screws and the drum.

[0011] According to a further technical solution, a copper pad is also installed on the latch, and the copper pad is arranged at the contact position between the upper page plate and the lower page plate.

[0012] According to a further technical solution, the conical spring is located in a circular groove provided on the fixed base, and its position is fixed by a positioning pin and a stop block.

[0013] Another object of an embodiment of the present invention is to provide a flexible micro-motion thresher, based on the above-mentioned flexible micro-motion thresher device, including the flexible micro-motion thresher device, and further comprising:

[0014] A concave screen is arranged below the drum, and a conveying unit is used to convey the material to be removed.

[0015] According to a further technical solution, the conveying unit adopts a belt conveying mechanism, which specifically includes a drive roller and a conveying belt.

[0016] Embodiments of the present invention provide a flexible micro-motion threshing device. This device uses a torsion spring to limit the rotation range of the upper plate. A conical spring also provides a flexible micro-motion effect for the upper plate. As the drum shaft drives the drum to rotate, the material to be threshed is flexibly threshed. This device is applicable to a wide range of crops and can reduce grain breakage caused by structural rigidity during the threshing process. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 An axial cross-sectional view of a flexible micro-motion threshing device provided by an embodiment of the present invention;

[0018] Figure 2 A front view of a flexible micro-motion threshing device provided by an embodiment of the present invention;

[0019] Figure 3 A schematic structural diagram of a flexible threshing mechanism in a flexible micro-motion threshing device provided in an embodiment of the present invention;

[0020] Figure 4 A schematic structural diagram of a hinge in a flexible micro-motion threshing device provided by an embodiment of the present invention;

[0021] Figure 5 A schematic diagram of the installation positions of a torsion spring, a latch and a lower plate in a flexible micro-motion threshing device provided in an embodiment of the present invention;

[0022] Figure 6 A schematic structural diagram of a flexible micro-motion thresher provided by an embodiment of the present invention;

[0023] Figure 7 The results of wheat threshing test and simulation are shown;

[0024] Figure 8 The percentage of unthreshed grains on wheat ears;

[0025] Figure 9 is the grain yield rate;

[0026] Figure 10 is the collision force on wheat kernels during threshing;

[0027] Figure 11 is the frequency of grain collision.

[0028] In the accompanying drawings: threshing element 1; conical spring 2; drum shaft 3; elastic hinge 4; upper page plate 41; torsion spring 42; copper pad 43; latch 44; lower page plate 45; positioning pin 5; lining fixing plate 6; screw 7; drum 8; fixed base 9; block 10; supporting width disc 11; conveyor belt 12; transmission roller 13; concave plate screen 14. DETAILED DESCRIPTION

[0029] In order to make the purpose, technical solutions and advantages of the present invention more clearly understood, the present invention will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present invention and are not intended to limit the present invention.

[0030] The specific implementation of the present invention is described in detail below with reference to specific embodiments.

[0031] like Figure 1-Figure 5 As shown, a flexible micro-motion threshing device provided by one embodiment of the present invention includes a drum shaft 3 and a drum 8, wherein the drum 8 is mounted on the drum shaft 3 via a supporting web 11; and further includes:

[0032] A flexible threshing module, comprising a plurality of flexible threshing units mounted in a circular arrangement on a drum 8, wherein each flexible threshing unit comprises a plurality of flexible threshing mechanisms equidistantly mounted on the drum 8 along the axial direction of the drum shaft 3;

[0033] The flexible threshing mechanism includes a fixed base 9 mounted on the drum 8, an elastic hinge 4 is installed on the fixed base 9, the elastic hinge 4 includes a lower page plate 45 mounted on the fixed base 9, a latch 44 is installed on the lower page plate 45, and an upper page plate 41 is rotatably mounted on the latch 44, a torsion spring 42 is also provided on the latch 44, and the two ends of the torsion spring 42 are respectively connected to the upper page plate 41 and the lower page plate 45, a threshing element 1 is installed on the upper page plate 41, and a conical spring 2 is also installed on the fixed base 9, and the end of the conical spring 2 away from the fixed base 9 is connected to the upper page plate 41.

[0034] In an embodiment of the present invention, the flexible threshing unit is provided with an even number of groups, which are symmetrically installed, preferably four groups, that is, the flexible threshing units are arranged at 90° intervals along the circumference of the drum 8, which is conducive to achieving dynamic balance of the drum 8. During specific use, the threshing element 1 can replace the material or structure according to the working conditions, so as to be suitable for different crops. The torsion spring 42 is used to limit the rotation range of the upper page plate 41 within a certain angle range, and the torsion spring 42 with different angles or elastic forces can be selected according to the actual working conditions. During use, the rotation range of the upper page plate 41 is limited by the torsion spring 42, and at the same time, the conical spring 2 can provide the upper page plate 41 with a flexible micro-motion effect. As the drum shaft 3 drives the drum 8 to rotate, the material to be threshed can be flexibly threshed.

[0035] like Figure 3 As shown, as a preferred embodiment of the present invention, the fixed base 9 is installed on the drum 8 by screws 7, which can realize convenient disassembly and assembly of the fixed base 9, and an inner lining fixing plate 6 is also provided at the connection between the screws 7 and the drum 8, thereby increasing the stability of the connection.

[0036] like Figure 3 and Figure 4 As shown, as a preferred embodiment of the present invention, a copper pad 43 is also installed on the pin 44, and the copper pad 43 is arranged at the contact position between the upper page plate 41 and the lower page plate 45, which is used to ensure that the upper page plate 41 and the lower page plate 45 are not too tight and stuck, thereby improving the use effect of the lifting device.

[0037] like Figure 3 As shown, as a preferred embodiment of the present invention, the conical spring 2 is located in a circular groove provided on the fixed base 9, and its position is fixed by a positioning pin 5 and a stopper 10, so that it is stably fixed on the fixed base 9.

[0038] like Figure 6 As shown, a flexible micro-motion thresher provided by an embodiment of the present invention is based on the above-mentioned flexible micro-motion thresher device, including the flexible micro-motion thresher device, and further comprising:

[0039] A concave screen 14 is provided below the drum 8, and a conveying unit for conveying the material to be removed.

[0040] In an embodiment of the present invention, when in use, the material to be threshed is fed by the conveying unit, and the drum 8 rotates at a certain speed, driving the flexible threshing module to thresh the material to be threshed. Under the impact and kneading action of the flexible threshing mechanism, the grains can be threshed from the material to be threshed, and the threshed grains are then sorted by the concave screen 14. The position of the concave screen 14 can be adjusted according to different materials.

[0041] like Figure 6 As shown, as a preferred embodiment of the present invention, the conveying unit adopts a belt conveying mechanism, specifically including a driving roller 13 and a conveying belt 12.

[0042] A threshing experiment was carried out using wheat plants as the material. Figure 7 These are the test and simulation threshing results of the device under the conditions of a drum speed of 888 rpm and a threshing gap of 30 mm in a wheat threshing test.

[0043] Subsequent simulations were conducted at a speed of 888 rpm, a threshing gap of 30 mm, and a wheat plant mass of 0.35 kg. Figure 8 and Figure 9 It can be seen that the flexible micro-motion device finally does not disconnect the grains on the wheat ears, resulting in fewer unthreshed grains, a high grain harvest rate, a large slope of the curve, and a fast threshing speed. Figure 10 The collision force on wheat kernels during threshing is shown. It can be seen that both the maximum and average collision forces are reduced, which is beneficial to reducing the stress on the kernels during threshing. Figure 11 It can be seen that the frequency of grain collisions with the flexible micro-motion device increases when the collision force is reduced, which makes the connection between the grain and the wheat ear more prone to fatigue fracture due to repeated stress, thereby improving the threshing efficiency.

[0044] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present invention should be included in the scope of protection of the present invention.

Claims

1. A flexible micro-motion threshing device, comprising a drum shaft and a drum, wherein the drum is mounted on the drum shaft via a supporting web, characterized in that: Also includes: A flexible threshing module, comprising a plurality of flexible threshing units mounted in a circular arrangement on a drum, each flexible threshing unit comprising a plurality of flexible threshing mechanisms mounted on the drum at equal distances along the axial direction of the drum axis; The flexible threshing mechanism includes a fixed base installed on the drum, an elastic hinge installed on the fixed base, the elastic hinge including a lower page plate installed on the fixed base, a latch installed on the lower page plate, and an upper page plate rotatably installed on the latch, a torsion spring is also provided on the latch, and the two ends of the torsion spring are respectively connected to the upper page plate and the lower page plate, a threshing element is installed on the upper page plate, a conical spring is also installed on the fixed base, and the end of the conical spring away from the fixed base is connected to the upper page plate.

2. The flexible micro-motion threshing device according to claim 1, characterized in that: The flexible threshing units are provided in four groups.

3. The flexible micro-motion threshing device according to claim 1, characterized in that: The fixing base is mounted on the drum by screws, and a lining fixing plate is provided at the connection between the screws and the drum.

4. The flexible micro-motion threshing device according to claim 1, characterized in that: A copper pad is also installed on the latch, and the copper pad is arranged at the contact position between the upper page plate and the lower page plate.

5. The flexible micro-motion threshing device according to claim 1, characterized in that: The conical spring is located in a circular groove provided on the fixed base, and its position is fixed by a positioning pin and a stop block.

6. A flexible micro-motion thresher, based on the flexible micro-motion thresher device according to any one of claims 1 to 5, characterized in that: The flexible micro-motion threshing device further comprises: A concave screen is arranged below the drum, and a conveying unit is used to convey the material to be removed.

7. The flexible micro-motion thresher according to claim 6, characterized in that: The conveying unit adopts a belt conveying mechanism, which specifically includes a transmission roller and a conveying belt.

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