Novel threshing tooth structure of harvester

Abstract

The utility model relates to a novel harvester threshing tooth structure which comprises four faces which are a threshing tooth face A, a threshing tooth face B, a threshing tooth face C and a threshing tooth face D. The threshing tooth face A is opposite to the threshing tooth face C, and the threshing tooth face B is opposite to the threshing tooth face D. Friction lines are arranged on the threshing tooth faces A, the thickness of the threshing tooth faces B is smaller than that of the threshing tooth faces D, and the threshing tooth faces C are curved faces or inclined faces. According to the utility model, the threshing effect is good, the grass discharging effect can be effectively improved, the running efficiency of the roller is improved, meanwhile, additional centrifugal acting force is avoided, and the threshing device has great market application and popularization value.

Description

TECHNICAL FIELD

[0001] The utility model relates to a novel harvester threshing tooth structure and belongs to the technical field of harvester threshing tooth design. BACKGROUND

[0002] With the continuous development of agricultural mechanization, the power of the machinery is getting higher and higher, and the walking speed is getting faster and faster, and the yield per unit area of crops is also gradually increasing. The threshing effect of the harvester, the running efficiency of the harvester drum and other aspects have brought new challenges.

[0003] The threshing teeth of the existing harvester are divided into two types:

[0004] One is a round bar type, which is welded on the threshing drum. This kind of threshing tooth structure is simple and easy to produce, but the threshing effect is poor, the resistance is large, and the wear resistance is poor.

[0005] The other is a cuboid type, which is also welded and fixed on the threshing drum. Generally, the threshing teeth of the entire drum form a spiral distribution. This kind of threshing tooth improves the running efficiency of the harvester drum, but the negative effect is that because of its spiral distribution, centrifugal force is generated during operation. It causes additional load to the bearings and shaft of the drum, which is easy to damage.

[0006] In many years of production practice, with the increase of crop yield per mu and the increase of harvester power, the existing threshing teeth cannot meet the actual needs of the operation, and various problems have occurred in the annual cross-region operation.

[0007] Main problem 1: There is a problem of not timely discharging grass, and the drum makes abnormal noise. Many harvesters are damaged due to the blockage of the threshing drum and the concave screen due to the untimely discharge of grass.

[0008] Main problem 2: The problem of serious wear and tear, normal threshing teeth will cause serious wear and tear within a few hundred hours, affecting the harvesting.

[0009] Main problem 3: The problem of not clean threshing, the conventional threshing teeth have poor threshing effect when facing crops such as japonica rice, especially when the crops are slightly green and not fully mature. INVENTION CONTENTS

[0010] The utility model aims at the deficiencies of the prior art, and provides a novel harvester threshing tooth structure which has good threshing effect, can effectively improve the grass discharging effect, improve the running efficiency of the drum, and avoid generating additional centrifugal force.

[0011] In order to realize the above-mentioned utility model purposes, the utility model adopts the technical scheme as follows: a novel harvester threshing tooth structure, including four surfaces, the four surfaces are threshing tooth A surface, threshing tooth B surface, threshing tooth C surface and threshing tooth D surface, the threshing tooth A surface is opposite to the threshing tooth C surface, and the threshing tooth B surface and the threshing tooth D surface are opposite.

[0012] The thickness of the threshing tooth B surface is less than the thickness of the threshing tooth D surface, and the threshing tooth C surface is a curved surface or an inclined surface.

[0013] The threshing tooth A surface is provided with friction lines.

[0014] The threshing tooth B surface is provided with a groove, and wear-resistant material is embedded in the groove.

[0015] The width of the threshing tooth A surface is less than the width of the threshing tooth C surface.

[0016] The threshing tooth C surface is connected with the threshing tooth B surface on one side and connected with the threshing tooth D surface on the other side, and the threshing tooth C surface gradually inclines from the side connected with the threshing tooth B surface to the side connected with the threshing tooth D surface.

[0017] When in use, the plurality of harvester threshing teeth are installed on the harvester cylinder.

[0018] The utility model discloses simple structure, production and manufacture are easy, convenient to use, through the utility model, the overall structure of threshing tooth includes four surfaces, the threshing tooth A surface is the cylinder feeding direction, the threshing tooth B surface is threshing tooth front contact surface, and the main wear occurs in this surface, the threshing tooth C surface is the crop discharge direction, and it is prepared to send crops into the pulverizer, and the threshing tooth D surface is connected with the threshing tooth A surface and C surface.

[0019] The threshing tooth A surface is perpendicular to the cylinder axis, and additional friction lines are arranged.

[0020] The threshing tooth B surface is provided with a groove, and wear-resistant material such as hard alloy and silicon carbide is embedded in the groove by brazing or other means.

[0021] The threshing tooth C surface is a curved surface or an inclined surface.

[0022] The thickness of the threshing tooth B surface is less than the thickness of the threshing tooth D surface

[0023] The threshing tooth A surface is the cylinder input end, and the threshing tooth C surface is the cylinder discharge end.

[0024] To improve the efficiency of straw removal from the threshing drum and reduce abnormal noise and clogging, this invention designs the contact surface of the straw removal side of the threshing teeth as a curved or inclined structure (i.e., the C-surface of the threshing teeth). Through the guiding effect of the curved and inclined surfaces, after the operation of the more than one hundred threshing teeth of the entire drum, a turbine-like channel is formed inside the drum, which greatly improves the straw removal efficiency and prevents crops from ineffectively staying inside the drum and clogging it.

[0025] To improve the wear resistance of threshing teeth, reduce replacement frequency, and avoid wasting resources and manpower, this invention designs a groove on the easily worn front section of the threshing teeth (i.e., the B-side of the threshing teeth). High-hardness wear-resistant materials, such as hard alloy steel, corundum, or silicon carbide coating, are inlaid into the groove through brazing or other methods. This achieves excellent wear resistance and significantly improves the wear resistance of the threshing teeth.

[0026] To improve the threshing effect of the threshing teeth, we set friction textures on the input side of the threshing teeth (i.e., the A side of the threshing teeth). By increasing the friction with the crops, the threshing effect is enhanced. At the same time, due to the effect of the curved slope of the C side, the crops are subjected to lateral forces and are more easily dispersed, and the gaps can better contact and rub with the A side.

[0027] This invention achieves good threshing effect, effectively improves straw removal, enhances drum operating efficiency, and avoids generating additional centrifugal force, thus possessing significant market application and promotion value. Attached Figure Description

[0028] Figure 1 This is a top view of the structure of this utility model;

[0029] Figure 2 This is a schematic diagram of the overall design of this utility model;

[0030] In the diagram: 1. Surface A of the threshing tooth; 2. Surface B of the threshing tooth; 3. Surface C of the threshing tooth; 4. Surface D of the threshing tooth; 5. Friction pattern; 6. Groove. Detailed Implementation

[0031] The present invention will now be described in detail with reference to the accompanying drawings.

[0032] like Figure 1 , Figure 2 A novel threshing tooth structure for a harvester includes a threshing tooth A surface 1, a threshing tooth B surface 2, a threshing tooth C surface 3, and a threshing tooth D surface 4. The threshing tooth A surface 1 and the threshing tooth C surface 3 are opposite each other, and the threshing tooth B surface 2 and the threshing tooth D surface 4 are opposite each other. The thickness of the threshing tooth B surface 2 is less than the thickness of the threshing tooth D surface 4, and the threshing tooth C surface 3 is a curved surface or an inclined surface.

[0033] Further, the frictional lines 5 can be arranged on the A surface 1 of the threshing tooth, the thickness of the B surface 2 of the threshing tooth is less than the thickness of the D surface 4 of the threshing tooth, and the C surface 3 of the threshing tooth is a curved surface or an inclined surface.

[0034] Further, the B surface 2 of the threshing tooth is arranged with a groove 6, and the groove 6 is embedded with wear-resistant material. The width of the A surface 1 of the threshing tooth is less than the width of the C surface 3 of the threshing tooth. Meanwhile, the C surface 3 of the threshing tooth can be designed with frictional lines.

Claims

1. A new type of harvester threshing tooth structure, comprising four surfaces, namely a threshing tooth A surface (1), a threshing tooth B surface (2), a threshing tooth C surface (3), and a threshing tooth D surface (4), wherein the threshing tooth A surface (1) is opposite to the threshing tooth C surface (3), and the threshing tooth B surface (2) is opposite to the threshing tooth D surface (4). Characterized in that: The thickness of the threshing tooth B surface (2) is less than that of the threshing tooth D surface (4), and the threshing tooth C surface (3) is a curved surface or an inclined surface.

2. A novel threshing tooth structure for a harvester as claimed in claim 1, wherein: The threshing tooth A surface (1) is provided with friction lines (5).

3. A novel threshing tooth structure for a harvester as claimed in claim 1, wherein: The threshing tooth B surface (2) is provided with a groove (6) in which a wear-resistant material is embedded.

4. A novel threshing tooth structure for a harvester as claimed in claim 1, wherein: The width of the threshing tooth A surface (1) is less than that of the threshing tooth C surface (3).

5. A novel threshing tooth structure for a harvester as claimed in claim 1, wherein: The threshing tooth C surface (3) is connected to the threshing tooth B surface (2) on one side and to the threshing tooth D surface (4) on the other side, and gradually inclines from the side connected to the threshing tooth B surface (2) to the side connected to the threshing tooth D surface (4).

6. A novel threshing tooth structure for a harvester as claimed in claim 1, wherein: In use, a plurality of the harvester threshing tooth structures are installed on a harvester cylinder.

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