Corn thresher

Abstract

The utility model provides a corn thresher capable of enabling corn cobs on the upper turning side of a threshing roller to move towards the lower turning side to enter the lower turning side so as to improve the threshing effect and efficiency of the thresher, and relates to the technical field of agricultural machinery. A corn thresher comprises a threshing bin and a main threshing roller installed in the threshing bin, the main threshing roller is provided with a threshing structure, one end of the threshing bin is provided with a feeding port, the other end of the threshing bin is provided with a corncob outlet, and the threshing bin is internally provided with a corn thresher which enables corn cobs on the upper rotating side of the main threshing roller to move towards the lower rotating side of the main threshing roller and enables the corn cobs to move towards the lower rotating side of the main threshing roller. The auxiliary structure is arranged on the lower turning side of the main threshing roller.

Description

Technical Field

[0001] The utility model relates to the technical field of agricultural machinery, in particular to a corn thresher. Background Art

[0002] As we all know, corn thresher is a widely used small agricultural machinery, which is a device that can separate corn kernels and corn cobs.

[0003] In order to improve the threshing efficiency and effect of the thresher, some threshers are now equipped with an auxiliary threshing roller on the downward rotating side of the main threshing roller in the threshing bin, i.e., the lower rotating side. Through the joint action of the main threshing roller and the auxiliary threshing roller, the purpose of improving the threshing efficiency and effect of the thresher is achieved. For example, a Chinese patent application with publication number CN207519185U discloses a double-roller single-bin corn thresher, in which a main threshing roller and an auxiliary threshing roller, both of which are fixed by a frame and have threshing ribs, are arranged in the threshing space; the radius of the main threshing roller is greater than the radius of the auxiliary threshing roller; when the main threshing roller and the auxiliary threshing roller both rotate counterclockwise, the auxiliary threshing roller is installed on the inner side of the left side plate; when the main threshing roller and the auxiliary threshing roller both rotate clockwise, the auxiliary threshing roller is installed on the inner side of the right side plate; a Chinese patent application with publication number CN207604231U discloses a four-roller double-bin corn thresher, in which a left main threshing roller and a left auxiliary threshing roller are installed in the left threshing space, the radius of the left main threshing roller is greater than the radius of the left auxiliary threshing roller, and a right main threshing roller and a right auxiliary threshing roller are installed in the right threshing space, the radius of the right main threshing roller is greater than the radius of the right auxiliary threshing roller.

[0004] In the actual threshing process, after the corn cobs enter the threshing bin (threshing space), they will fall into the lower rotating side space of the main threshing roller, and part of them will fall into the upper rotating side (upward rotating side) space of the main threshing roller. The working principle of the corn thresher allows the corn cobs to be better threshed when they are in the lower rotating side space of the threshing roller, while the corn cobs in the upper rotating side space are relatively less susceptible to the force of the threshing roller. Under the action of gravity, the corn cobs that enter the upper rotating side of the threshing roller are difficult to be moved to the lower rotating side of the main threshing roller by the force of the threshing roller. After entering the upper rotating side, the corn cobs can only stay on the upper rotating side and be subject to the smaller force of the threshing roller. Their moving speed is slow and the threshing effect is poor, which affects the threshing effect and efficiency of the thresher. Utility Model Content

[0005] The technical problem to be solved by the utility model is to provide a corn thresher which can enable the corn cobs on the upper rotating side of the threshing roller to move to the lower rotating side and enter the lower rotating side, so as to improve the threshing effect and efficiency of the thresher.

[0006] The technical solution adopted by the utility model to solve its technical problems is: a corn thresher, including a threshing bin and a main threshing roller installed in the threshing bin, the main threshing roller is provided with a threshing structure, one end of the threshing bin is provided with a feed port, the other end is provided with a corn cob outlet, the threshing bin is provided with an auxiliary structure for moving the corn cobs on the upper rotating side of the main threshing roller toward the lower rotating side of the main threshing roller and then entering the lower rotating side of the main threshing roller.

[0007] Furthermore, the auxiliary structure comprises an auxiliary roller installed in the threshing bin and having a diameter smaller than that of the main threshing roller, and the auxiliary roller is installed on the upper rotating side of the main threshing roller.

[0008] Furthermore, the auxiliary roller is arranged in parallel with the main threshing roller.

[0009] Furthermore, the outer periphery of the auxiliary roller is provided with pushing teeth or pushing ribs extending along the axial direction thereof.

[0010] Furthermore, the threshing structure includes threshing ribs which are arranged on the main threshing roller and extend spirally along the axis direction of the main threshing roller. The outer periphery of the auxiliary roller is provided with pushing ribs, which are spirally extended along the axis direction of the auxiliary roller and have the same rotation direction as the threshing ribs.

[0011] Furthermore, it also includes a rotation driving device, which is connected to the main threshing roller and the auxiliary roller in the same direction so as to drive the main threshing roller and the auxiliary roller to rotate in the same direction.

[0012] Furthermore, the auxiliary structure also includes a material guide plate arranged above the upper rotating side of the main threshing roller, and the material guide plate is gradually inclined toward the main threshing roller from the feed inlet of the threshing bin to the corn cob outlet.

[0013] The beneficial effect of the utility model is that the corn thresher of the utility model is provided with an auxiliary structure in the threshing bin, which enables the corn cobs on the upper rotating side of the main threshing roller to move toward the lower rotating side of the main threshing roller and then enter the lower rotating side of the main threshing roller. The corn cobs entering the upper rotating side space of the main threshing roller can be moved to the lower rotating side of the main threshing roller, thereby facilitating the corn cobs to be threshed and quickly discharged under the action of the threshing roller. Therefore, the threshing effect and threshing efficiency of the corn thresher can be improved. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 It is a structural schematic diagram of a corn thresher of the utility model;

[0015] Figure 2 yes Figure 1 A schematic diagram of a top view structure;

[0016] Figure 3It is another structural schematic diagram of the corn thresher of the utility model;

[0017] As shown in the figure: threshing bin 1, main threshing roller 2, auxiliary roller 3, threshing rotation direction 4, material guide plate 5, rotation drive device 6, feed inlet 11, corn cob outlet 12, threshing rib 21, and pushing rib 31. DETAILED DESCRIPTION

[0018] The utility model is further described below in conjunction with the accompanying drawings and embodiments.

[0019] like Figure 1 , Figure 2 As shown, a corn thresher of the utility model comprises a threshing bin 1 and a main threshing roller 2 rotatably installed in the threshing bin 1, the main threshing roller 2 may be one or more, a threshing structure is provided on the main threshing roller 2, a feed port 11 is provided at one end of the threshing bin 1, a corn cob outlet 12 is provided at the other end, and an auxiliary structure is provided in the threshing bin 1 for moving the corn cobs on the upper rotating side of the main threshing roller 2 toward the lower rotating side of the main threshing roller 2 and then entering the lower rotating side of the main threshing roller 2.

[0020] The threshing structure can be a threshing rib or a threshing tooth, etc.

[0021] In the present invention, the upper rotating side of the main threshing roller 2 specifically refers to the side of the main threshing roller 2 rotating upward, and the lower rotating side of the main threshing roller 2 specifically refers to the side of the main threshing roller 2 rotating downward. Specifically, when the main threshing roller 2 rotates clockwise, the upper rotating side of the main threshing roller 2 is the left side of the main threshing roller 2, and the lower rotating side of the main threshing roller 2 is the right side of the main threshing roller 2; when the main threshing roller 2 rotates counterclockwise, the upper rotating side of the main threshing roller 2 is the right side of the main threshing roller 2, and the lower rotating side of the main threshing roller 2 is the left side of the main threshing roller 2.

[0022] The working principle of the corn thresher is that the corn cobs can be better threshed when they are on the lower rotating side of the main threshing roller 2, while the corn cobs on the upper rotating side are relatively less susceptible to its force. Therefore, the corn cobs on the upper rotating side have the problems of unclean threshing and slow moving speed, which affects the threshing efficiency and threshing effect of the thresher. The corn thresher of the utility model is provided with an auxiliary structure in the threshing bin 1 for moving the corn cobs on the upper rotating side of the main threshing roller 2 toward the lower rotating side of the main threshing roller 2 and then entering the lower rotating side of the main threshing roller 2. The corn cobs entering the upper rotating side space of the main threshing roller 2 can be moved to the lower rotating side of the main threshing roller 2, so that they can be threshed by the force of the threshing roller and quickly discharged. Therefore, the threshing effect and threshing efficiency of the corn thresher can be improved.

[0023] Specifically, Figure 1 , Figure 2As shown, the auxiliary structure includes an auxiliary roller 3 installed in the threshing bin 1 and having a diameter smaller than that of the main threshing roller 2; the auxiliary roller 3 is installed on the upper rotating side of the main threshing roller 2. Figure 1 In the embodiment, the threshing rotation direction 4 of the main threshing roller 2 is counterclockwise, and the upper rotating side of the main threshing roller 2 is the right side of the main threshing roller 2, that is, the auxiliary roller 3 is installed on the right side of the main threshing roller 2.

[0024] Specifically, the auxiliary roller 3 can be arranged in parallel with the main threshing roller 2, and of course, can also be inclined at a certain angle relative to the main threshing roller 2, and the inclination can be inclined in all directions. In the present utility model, in order to facilitate transmission and push the corn cob to the main threshing roller 2, it is best that the auxiliary roller 3 is arranged in parallel with the main threshing roller 2.

[0025] When the corn thresher of the utility model is working, the auxiliary roller 3 is driven in the threshing rotation direction 4 of the main threshing roller 2, that is, when the threshing rotation direction of the main threshing roller 2 is counterclockwise, the rotation direction of the auxiliary roller 3 is also counterclockwise, and when the threshing rotation direction of the main threshing roller 2 is clockwise, the rotation direction of the auxiliary roller 3 is also clockwise. The corn cobs enter from the feed port 11 of the threshing bin 1, and the corn cobs are discharged from the corn cob outlet 12 at the other end of the threshing bin 1 after threshing, and the corn kernels are discharged from the bottom of the main threshing roller. The corn thresher of the utility model is provided with an auxiliary roller 3 on the upper rotating side of the main threshing roller 2. Under the rotation action of the auxiliary roller 3, the corn cobs entering the upper rotating side of the main threshing roller 2 can be pushed to the lower rotating side direction of the main threshing roller 2, so that they can be affected by the main threshing roller 2 and move to the lower rotating side, thereby entering the lower rotating side space of the main threshing roller 2, thereby facilitating their threshing and timely discharge from the thresher. In addition, under the action of the auxiliary roller 3, the corn cobs on the upper side of the main threshing roller 2 can also be more easily threshed by the main threshing roller 2.

[0026] In order to further improve the threshing effect, an auxiliary threshing roller can be arranged on the lower rotating side of the main threshing roller 2.

[0027] The auxiliary roller 3 can be arranged at the same horizontal plane as the main threshing roller 2 (the axes of the two are at the same horizontal plane), and of course, can also be arranged higher than the main threshing roller 2, specifically so as to facilitate the movement of the corn cob on the upper rotating side of the main threshing roller 2 to the lower rotating side of the main threshing roller 2. It can be understood that in order to prevent the corn cob from passing through the gap between the main threshing roller 2 and the auxiliary roller 3 and between the auxiliary roller 3 and the side plate of the threshing bin 1, the gap between the main threshing roller 2 and the auxiliary roller 3 and between the auxiliary roller 3 and the threshing bin 1 should not be too large, and should be smaller than the minimum diameter of the corn cob.

[0028] In order to facilitate the auxiliary roller to push the corn cob to the lower rotating side of the main threshing roller 2, preferably lower, the outer periphery of the auxiliary roller 3 is provided with a pushing tooth or a pushing rib 31 extending along its axial direction. The pushing rib 31 can be a linear rib or a spiral rib.

[0029] In the embodiment of the utility model, the threshing structure adopts the existing method, which is a threshing rib 21 arranged on the main threshing roller 2 and extending spirally along the axis direction of the main threshing roller 2. The spiral direction of the threshing rib 21 is specifically set according to the threshing rotation direction of the main threshing roller 2, so as to push the corn cob or core toward the corn cob outlet 12. For example: Figure 2 In the embodiment, the threshing rotation direction 4 of the main threshing roller 2 is counterclockwise, and the rotation direction of the threshing rib 21 should be right-handed, so that the corn cob or core can be pushed toward the corn cob outlet 12 when the main threshing roller 2 rotates counterclockwise.

[0030] In the embodiment of the utility model, the outer periphery of the auxiliary roller 3 is preferably provided with a pusher rib 31, which is a spiral structure extending in a spiral direction along the axis of the auxiliary roller 3 and having the same rotation direction as the threshing rib 21. The above structure can push the corn cob toward the main threshing roller 2 and also push the corn cob toward the corn cob outlet 12, which can further improve the threshing efficiency.

[0031] In the utility model, the corn thresher is further provided with a rotation drive device 6, which is connected to the main threshing roller 2 and the auxiliary roller 3 in the same direction to drive the main threshing roller 2 and the auxiliary roller 3 to rotate in the same direction. The transmission connection can be realized by belt transmission, gear transmission, etc. The rotation drive device 6 generally adopts a motor.

[0032] like Figure 1 , Figure 2 As shown, in the utility model, the auxiliary structure also includes a guide plate 5 arranged above the upper rotating side of the main threshing roller 2, and the guide plate 5 is gradually inclined toward the main threshing roller 2 from the feed inlet 11 of the threshing bin 1 to the corn cob outlet 12. The guide plate 5 generally extends to the top of the main threshing roller 2. In some embodiments, as Figure 3 As shown, the auxiliary structure also only adopts a material guide plate 5 disposed above the upper rotating side of the main threshing roller 2, and the material guide plate 5 is gradually inclined toward the direction close to the main threshing roller 2 from the feed inlet 11 of the threshing bin 1 to the corn cob outlet 12. Under the action of the material guide plate 5, the corn cobs on the upper rotating side can move along the material guide plate 5 and move toward the lower rotating side of the main threshing roller 2 in the process of moving from the feed inlet 11 to the corn cob outlet 12, and then enter the lower rotating side of the main threshing roller 2. Compared with the structure in which the auxiliary structure simply adopts the material guide plate 5, the auxiliary structure adopts the structure of the material guide plate 5 and the auxiliary roller 3. The material guide plate 5 and the auxiliary roller 3 both have the function of moving the corn cobs in the upper rotating side space of the main threshing roller 2 to the lower rotating side of the main threshing roller 2, which has the best effect on improving the threshing effect and efficiency of the thresher, and is conducive to reducing the force on the material guide plate 5 and preventing its deformation.

Claims

1. A corn thresher, comprising a threshing bin (1) and a main threshing roller (2) installed in the threshing bin (1), the main threshing roller (2) being provided with a threshing structure, one end of the threshing bin (1) being provided with a feed inlet (11), and the other end being provided with a corn cob outlet (12), characterized in that: The threshing bin (1) is provided with an auxiliary structure for moving the corn cobs on the upper rotating side of the main threshing roller (2) toward the lower rotating side of the main threshing roller (2) and then entering the lower rotating side of the main threshing roller (2); The auxiliary structure comprises an auxiliary roller (3) installed in the threshing bin (1) and having a diameter smaller than that of the main threshing roller (2); the auxiliary roller (3) is installed on the upper rotating side of the main threshing roller (2).

2. A corn thresher as claimed in claim 1, characterized in that: The auxiliary roller (3) is arranged parallel to the main threshing roller (2).

3. A corn thresher as claimed in claim 1, characterized in that: The outer periphery of the auxiliary roller (3) is provided with pushing teeth or pushing ribs (31) extending along the axial direction thereof.

4. A corn thresher as claimed in claim 3, characterized in that: The threshing structure comprises a threshing rib (21) which is arranged on a main threshing roller (2) and spirally extends along the axis direction of the main threshing roller (2); a pushing rib (31) is arranged on the outer periphery of the auxiliary roller (3); the pushing rib (31) is a spiral structure which spirally extends along the axis direction of the auxiliary roller (3) and has the same rotation direction as the threshing rib (21).

5. A corn thresher as claimed in claim 1, characterized in that: The invention also comprises a rotation driving device (6), wherein the rotation driving device (6) is connected to the main threshing roller (2) and the auxiliary roller (3) in the same direction so as to drive the main threshing roller (2) and the auxiliary roller (3) to rotate in the same direction.

6. A corn thresher according to any one of claims 1 to 5, characterized in that: The auxiliary structure also includes a material guide plate (5) arranged above the upper rotating side of the main threshing roller (2), and the material guide plate (5) is gradually inclined in the direction from the feed inlet (11) of the threshing bin (1) to the corn cob outlet (12) to the main threshing roller (2).

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