Header of corn harvester

Abstract

The utility model provides a header of a corn harvester. The header of the corn harvester comprises a rack, an ear picking box, an ear conveying groove and a front hob, wherein the ear picking box, the ear conveying groove and the front hob are arranged on the rack; the first transmission mechanism and the second transmission mechanism are arranged to drive the ear picking box, the ear conveying groove and the front hobbing cutter on the rack to work, and corn ear harvesting is achieved. The first transmission mechanism is connected with the engine and provides driving power for the ear picking box, the ear conveying groove and the front hob which are close to the side where the engine is located. The second transmission mechanism provides driving power for the ear picking box, the ear conveying groove and the front hob which are far away from the side where the engine is located. A first transmission shaft is arranged, the side, close to the engine, of the first transmission shaft is connected with a first transmission mechanism, the side, away from the engine, of the first transmission shaft is connected with a second transmission mechanism, and the first transmission mechanism transmits power to the second transmission mechanism through the first transmission shaft. According to the header of the corn harvester, driving on the two sides of the header is achieved, and the header has the advantages of being stable in work and high in reliability.

Description

Technical Field

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

[0002] Most of the headers on the market adopt a chain drive structure to drive each functional unit to work. However, the chain drive method has the following disadvantages: First, there are many drive sprockets. If the harvesting operation time is long, the drive chain and sprockets are easily blocked by dust and straw, affecting the transmission efficiency of the sprockets. Second, there is a common problem of overload in sprocket transmission. If abnormal jamming occurs in functional components such as the ear picking box and the front cutter, that is, when the torque exceeds the rated range, the sprockets driving the ear picking box and the front cutter are easily damaged, affecting the progress of the harvesting operation. Third, the headers on the market adopt a single-side drive structure, and there are often problems of uneven power distribution and inconsistent transmission progress on both sides of the header. Therefore, it is necessary to provide a header of a corn harvester with the advantages of stable operation and high reliability to overcome the above-mentioned defects. Content of the Utility Model

[0003] The purpose of the utility model is to provide a header of a corn harvester to solve the problems of too many drive sprockets, excessive torque between structures, and blockage during the corn harvesting process.

[0004] To solve the above technical problems, according to one aspect of the utility model, a header of a corn harvester is provided, including: a frame and an ear picking box, a cob conveying trough, and a front cutter disposed on the frame; the header further includes the following structures: a first transmission mechanism, the first transmission mechanism is connected to an engine, and the first transmission mechanism provides driving power to the ear picking box, the cob conveying trough, and the front cutter on the side close to the engine; a second transmission mechanism, the second transmission mechanism provides driving power to the ear picking box, the cob conveying trough, and the front cutter on the side far from the engine; a first transmission shaft, the first transmission shaft is connected to the first transmission mechanism on the side close to the engine and is connected to the second transmission mechanism on the side far from the engine, and the first transmission mechanism transmits power to the second transmission mechanism through the first transmission shaft.

[0005] The first transmission mechanism and the second transmission mechanism are symmetrically arranged at both ends of the first transmission shaft, and respectively provide driving forces to the ear picking boxes, cob conveying troughs, and front cutters on both sides. By adopting this structure, the power distribution on both sides of the first transmission shaft is uniform, and the transmission effects of the ear picking boxes, cob conveying troughs, and front cutters on both sides are the same. At the same time, if a transmission mechanism on one side of the header fails, the transmission mechanism on the other side can still work normally.

[0006] In this embodiment, the first transmission mechanism includes a first pulley, and the first pulley is arranged at one end of the first transmission shaft; the second transmission mechanism includes a second pulley, and the second pulley is arranged at the other end of the first transmission shaft.

[0007] In this embodiment, the first transmission mechanism includes a second transmission shaft. A third pulley is arranged at one end of the second transmission shaft close to the first pulley. The third pulley is in transmission connection with the first pulley to drive the second transmission shaft to rotate; the second transmission mechanism includes a third transmission shaft. A fourth pulley is arranged at one end of the third transmission shaft close to the second pulley. The fourth pulley is in transmission connection with the second pulley to drive the third transmission shaft to rotate.

[0008] In this embodiment, a first sprocket is sleeved on one side of the second transmission shaft close to the third pulley. The first sprocket is connected to the driving sprocket of the first conveying trough to drive the first conveying trough; a second sprocket is sleeved on one side of the third transmission shaft close to the fourth pulley. The second sprocket is connected to the driving sprocket of the second conveying trough to drive the second conveying trough.

[0009] In this embodiment, a fifth pulley is sleeved on the other end of the second transmission shaft. The fifth pulley is connected to the driving pulley of the first front cutter to drive the first front cutter; a sixth pulley is sleeved on the other end of the third transmission shaft. The sixth pulley is connected to the driving pulley of the second front cutter to drive the second front cutter.

[0010] In this embodiment, a seventh pulley is sleeved on one side of the second transmission shaft close to the driving pulley of the first front cutter. The seventh pulley is connected to the driving pulley of the first ear picking box to drive the first ear picking box; an eighth pulley is sleeved on one side of the third transmission shaft close to the driving pulley of the second front cutter. The eighth pulley is connected to the driving pulley of the second ear picking box to drive the second ear picking box.

[0011] Preferably, a fifth pulley is sleeved on the other end of the second transmission shaft. The fifth pulley is a double-row pulley. The fifth pulley is connected to the driving pulley of the first front cutter and the driving pulley of the first ear picking box to drive the first front cutter and the first ear picking box; a sixth pulley is sleeved on the other end of the third transmission shaft. The sixth pulley is a double-row pulley. The sixth pulley is connected to the driving pulley of the second front cutter and the driving pulley of the second ear picking box to drive the second front cutter and the second ear picking box. By selecting double-row pulleys, the driving force can be provided to the ear picking box and the front cutter at the same time, and the transmission effects of the ear picking box and the front cutter are consistent to keep synchronous operation.

[0012] Preferably, the cutting table includes a first tensioning device and a second tensioning device arranged on the frame; the first tensioning device is connected to the first transmission mechanism; the second tensioning device is connected to the second transmission mechanism.

[0013] Further, a main pulley is sleeved on the first transmission shaft, and the main pulley is connected to the engine.

[0014] Further, the first ear picking box driving pulley drives at least one ear picking box, and the ear picking boxes are connected by couplings.

[0015] A corn harvester cutting table provided by the utility model adopts a form of belt drive of a main drive structure, reduces a sprocket transmission structure, avoids blockage of internal parts of the cutting table caused by dust and straws, and avoids the situation of transmission overload; meanwhile, adopting a form of two-side drive can improve the reliability of the cutting table and ensure the high efficiency and stability of the corn harvesting process. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] The present utility model will be further described in detail below with reference to the drawings and specific embodiments:

[0017] Figure 1 It is a three-dimensional view of a corn harvester cutting table provided by the present utility model.

[0018] Figure 2 It is a schematic structural view of a corn harvesting cutting table provided by the present utility model Figure 1 .

[0019] Figure 3 It is a schematic structural view of a corn harvesting cutting table provided by the present utility model Figure 2 .

[0020] Figure 4 It is a schematic structural view of a corn harvesting cutting table provided by the present utility model Figure 3 .

[0021] Explanation of the reference numerals in the drawings:

[0022] 100-cutting table; 10-first transmission mechanism; 101-first pulley; 102-second transmission shaft; 103-third pulley; 104-first sprocket; 105-fifth pulley; 106-first front hob drive pulley; 107-seventh pulley; 108-first ear picking box drive pulley; 109-first tensioning device; 1091-first tensioning wheel; 1092-second tensioning wheel; 1093-third tensioning wheel; 1094-fourth tensioning wheel; 20-second transmission mechanism; 20 1-the second pulley; 202-the third transmission shaft; 203-the fourth pulley; 204-the second sprocket; 205-the sixth pulley; 206-the second front roller drive pulley; 207-the eighth pulley; 208-the second ear picking box drive pulley; 209-the second tensioning device; 2091-the fifth tensioning wheel; 2092-the sixth tensioning wheel; 2093-the seventh tensioning wheel; 2094-the eighth tensioning wheel; 30-the first transmission shaft; 301-the main pulley; 40-the coupling; 50-the frame. DETAILED DESCRIPTION

[0023] In order to more clearly illustrate the embodiments of the utility model or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0024] In order to simplify the drawings, only the parts related to the utility model are schematically shown in each figure, and they do not represent the actual structure of the product. In addition, in order to simplify the drawings and facilitate understanding, in some figures, only one of the parts with the same structure or function is schematically drawn or marked. In this article, "one" not only means "only one", but also means "more than one".

[0025] It should be further understood that the term “and / or” used in the specification and appended claims refers to any combination and all possible combinations of one or more of the associated listed items, and includes these combinations.

[0026] In this article, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "connected", and "connected" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in this utility model can be understood according to specific circumstances.

[0027] In addition, in the description of the present application, terms such as "first" and "second" are only used for differential description and should not be construed as indicating or implying relative importance.

[0028] To more clearly illustrate the technical solutions in the embodiments of the present utility model or the prior art, the following will describe the specific embodiments of the present utility model with reference to the accompanying drawings. Obviously, the accompanying drawings in the following description are only some embodiments of the present utility model. For those of ordinary skill in the art, without creative efforts, other drawings can be obtained based on these drawings, and other embodiments can also be obtained.

[0029] See Figure 1 , this embodiment provides a corn harvester header. A front cutter roller disposed on the frame 50 cuts corn straws. A picker box disposed on the frame 50 drives a reel chain and a stalk puller roller to pick ears. A cob conveyor chute disposed on the frame 50 conveys corn cobs to the rear of the header. See Figure 2 , the header is provided with a first transmission shaft 30. The first transmission shaft 30 is connected to the engine of the corn harvester and provides driving power for the front cutter roller, picker box, and cob conveyor chute on the frame 50. To drive the front cutter roller, picker box, and cob conveyor chute to work, a first transmission mechanism 10 and a second transmission mechanism 20 are provided to drive the front cutter roller, picker box, and cob conveyor chute. The first transmission mechanism 10 and the second transmission mechanism 20 respectively drive a set of front cutter roller, picker box, and cob conveyor chute to work. The first transmission mechanism 10 and the second transmission mechanism 20 are symmetrically arranged on both sides of the header frame 50. Among them, the first transmission mechanism 10 is arranged on the side close to the engine to provide driving power for the front cutter roller, picker box, and cob conveyor chute on the side close to the engine; the second transmission mechanism 20 is arranged on the side far from the engine to provide driving power for the front cutter roller, picker box, and cob conveyor chute on the side far from the engine. The power provided by the engine is transmitted from the side where the first transmission mechanism 10 is located, through the first transmission shaft 30, to the second transmission mechanism 20. The setting of the first transmission shaft 30 realizes the synchronous transmission of the first transmission mechanism 10 and the second transmission mechanism 20, and the power of the engine is evenly distributed to the first transmission mechanism 10 and the second transmission mechanism 20 on both sides of the header. By adopting such a symmetric setting of the two-side transmission mechanisms, the transmission stability of the header can be improved, and the working reliability of the front cutter roller, picker box, and cob conveyor chute arranged on the header can be ensured. The power on both sides of the first transmission shaft 30 is evenly distributed, and the transmission effects of the picker boxes, cob conveyor chutes, and front cutter rollers on both sides are the same. In the case of a failure in the power transmission on one side, the front cutter roller, picker box, and cob conveyor chute on the other side can still work normally, reducing the impact caused by the failure.

[0030] See Figure 3, the first transmission mechanism 10 is connected to the first transmission shaft 30. The first transmission mechanism 10 is provided with a first pulley 101, and the first pulley 101 is sleeved on one end of the first transmission shaft 30. The second transmission mechanism 20 is provided with a second pulley 201, and the second pulley 201 is sleeved on the other end of the first transmission shaft 30. A main pulley 301 connected to the engine is sleeved on the first transmission shaft 30. The main pulley 301 is arranged on the side close to the first pulley 101. The main pulley 301 is connected to the engine output end. When the main pulley 301 rotates, it drives the first transmission shaft 30 to rotate. Further, the first pulley 101 and the second pulley 201 arranged on the first transmission shaft 30 rotate. When the first pulley 101 rotates, it provides driving force to the first transmission mechanism 10. When the second pulley 201 rotates, it provides driving force to the second transmission mechanism 20.

[0031] To transmit power to the ear picking box, the ear conveyor trough, and the front hob, a second transmission shaft 102 is arranged in the first transmission mechanism 10. The second transmission shaft 102 distributes power to the ear picking box, the ear conveyor trough, and the front hob. The second transmission mechanism 20 is provided with a third transmission shaft 202. The third transmission shaft 202 distributes power to the ear picking box, the ear conveyor trough, and the front hob. Specifically, both the second transmission shaft 102 and the third transmission shaft 202 are parallel to the setting direction of the first transmission shaft 30. On the side of the second transmission shaft 102 close to the first pulley 101, a third pulley 103 is arranged. The first pulley 101 is in transmission connection with the third pulley 103. When the first pulley 101 rotates, it drives the third pulley 103 to rotate. Further, power is transmitted to the second transmission shaft 102 to drive the ear picking box, the ear conveyor trough, and the front hob arranged on the second transmission shaft 102 to work. Similarly, a fourth pulley 203 is arranged on the side of the third transmission shaft 202 close to the second pulley 201. When the second pulley 201 rotates, it drives the fourth pulley 203 to rotate. The fourth pulley 203 arranged at one end of the third transmission shaft 202 drives the third transmission shaft 202 to rotate, transmits power to the third transmission shaft 202, and drives the ear picking box, the ear conveyor trough, and the front hob arranged on the third transmission shaft 202 to work.

[0032] In the embodiment, a first sprocket 104 is arranged on the second transmission shaft 102. The first sprocket 104 is connected to the first conveying trough driving sprocket. The first sprocket 104 is sleeved on one side of the second transmission shaft 102 close to the third pulley 103 and rotates coaxially with the second transmission shaft 102, thereby transmitting power to the first conveying trough sprocket to drive the first conveying trough to work. Similarly, a second sprocket 204 is arranged on the third transmission shaft 202. The second sprocket 204 is arranged on one side of the third transmission shaft 202 close to the fourth pulley 203 and rotates coaxially with the third transmission shaft 202, transmitting power to the second conveying trough sprocket to drive the second conveying trough to work. It should be noted that during the process of driving the ear conveying trough chain harrow to lift, since the ear conveying trough is generally arranged at the inner side of the middle position of the cutting table, when the power is distributed from the first transmission shaft 30 to the second transmission shaft 102 and the third transmission shaft 202, the first sprocket 104 and the second sprocket 204 are arranged first to provide power to the first ear conveying trough and the second ear conveying trough. There must be a height difference between the ear conveying trough and the cutting table surface to form the structure of the trough. Therefore, in the first transmission mechanism 10 and the second transmission mechanism 20, only the ear conveying trough adopts the form of sprocket transmission to save space. Also because the ear conveying trough must be arranged inside the cutting table, in the form of sprocket transmission, the chain is easier to replace than in the form of pulley transmission.

[0033] The other end of the second transmission shaft 102 is sleeved with a fifth pulley 105. The fifth pulley 105 is connected to the first front cutter bar driving pulley 106 to provide driving power to the first front cutter bar. Correspondingly, the other end of the third transmission shaft 202 is sleeved with a sixth pulley 205. The sixth pulley 205 is connected to the second front cutter bar driving pulley 206 to provide driving power to the second front cutter bar.

[0034] A seventh pulley 107 is further sleeved on one side of the second transmission shaft 102 close to the first front cutter bar driving pulley 106. The seventh pulley 107 is connected to the first ear box driving pulley 108 to drive the first ear box to work; similarly, an eighth pulley 207 is sleeved on one side of the third transmission shaft 202 close to the second front cutter bar driving pulley 206. The eighth pulley 207 is connected to the second ear box driving pulley 208 to drive the second ear box to work, thereby realizing the work of the pulling roller and the reel chain.

[0035] Preferably, the fifth pulley 105 sleeved on the other end of the second transmission shaft 102 and the sixth pulley 205 sleeved on the third transmission shaft 202 are double-row pulleys. The fifth pulley 105 can be connected to the first front cutter driving pulley 106 and the first ear box driving pulley 108 at the same time; the sixth pulley 205 can be connected to the second front cutter driving pulley 206 and the first ear box driving pulley 108 at the same time, so that the first front cutter and the first ear box, and the second front cutter and the second ear box work synchronously. Since during the corn harvesting process, the cutting of corn stalks by the front cutter, the pulling of the ears on the stalks by the pulling roller, and the feeding of the stalks by the reel chain are synchronous, the use of double-row pulleys can ensure the synchronous transmission of the ear box and the front cutter. The form of double-row pulleys is selected, which not only ensures the synchronous drive of the front cutter and the ear box, but also ensures the reliability of power transmission and prevents idling.

[0036] Preferably, the cutting table is further provided with a first tensioning device 109 and a second tensioning device 209. The first tensioning device 109 is connected to the first transmission mechanism 10, and the second tensioning device 209 is connected to the second transmission mechanism 20; the first tensioning device 109 is respectively provided with a first tensioning wheel 1091, a second tensioning wheel 1092, a third tensioning wheel 1093, and a fourth tensioning wheel 1094, which are respectively used to tension the drive belt between the first pulley 101 and the third pulley 103, the first ear conveyor chain, the first front cutter drive belt, and the first ear box drive belt. Correspondingly, the second tensioning device 209 is respectively provided with a fifth tensioning wheel 2091, a sixth tensioning wheel 2092, a seventh tensioning wheel 2093, and an eighth tensioning wheel 2094, which are respectively used to tension the drive belt between the second pulley 201 and the fourth pulley 203, the second ear conveyor chain, the second front cutter drive belt, and the second ear box drive belt.

[0037] See Figure 4 As shown in

[0038] It will be apparent to those skilled in the art that various modifications and variations can be made to the above-described exemplary embodiments of the present utility model without departing from the spirit and scope of the present utility model. Therefore, it is intended that the present utility model cover modifications and variations of the present utility model falling within the scope of the appended claims and their equivalent technical solutions.

Claims

1. A corn harvester header, characterized in that: include: frame; An ear picking box, an ear conveying trough, and a front hob, wherein the ear picking box, the ear conveying trough, and the front hob are arranged on the frame; a first transmission mechanism, the first transmission mechanism being connected to the engine, and providing driving power to the ear picking box, the ear conveying trough and the front hob on the side close to the engine; a second transmission mechanism, which provides driving power to the ear picking box, the ear conveying trough and the front hob on the side away from the engine; A first transmission shaft, wherein the first transmission shaft is connected to the first transmission mechanism on a side close to the engine and is connected to the second transmission mechanism on a side away from the engine, and the first transmission mechanism transmits power to the second transmission mechanism through the first transmission shaft.

2. A corn harvester header as claimed in claim 1, characterized in that: The first transmission mechanism includes a first pulley, which is arranged at one end of the first transmission shaft; the second transmission mechanism includes a second pulley, which is arranged at the other end of the first transmission shaft.

3. A corn harvester header as claimed in claim 2, characterized in that: The first transmission mechanism includes a second transmission shaft, a third pulley is arranged at one end of the second transmission shaft close to the first pulley, and the third pulley is connected to the first pulley for driving the second transmission shaft to rotate; the second transmission mechanism includes a third transmission shaft, a fourth pulley is arranged at one end of the third transmission shaft close to the second pulley, and the fourth pulley is connected to the second pulley for driving the third transmission shaft to rotate.

4. A corn harvester header as claimed in claim 3, characterized in that: A first sprocket is sleeved on the side of the second transmission shaft close to the third pulley, and the first sprocket is connected to the first conveying groove driving sprocket to drive the first conveying groove; a second sprocket is sleeved on the side of the third transmission shaft close to the fourth pulley, and the second sprocket is connected to the second conveying groove driving sprocket to drive the second conveying groove.

5. A corn harvester header as claimed in claim 4, characterized in that: The other end of the second transmission shaft is provided with a fifth pulley, which is connected to the first front cutter driving pulley to drive the first front cutter; the other end of the third transmission shaft is provided with a sixth pulley, which is connected to the second front cutter driving pulley to drive the second front cutter.

6. A corn harvester header as claimed in claim 5, characterized in that: A seventh pulley is mounted on a side of the second transmission shaft close to the first front hob drive pulley, and the seventh pulley is connected to the first ear picking box drive pulley to drive the first ear picking box; an eighth pulley is mounted on a side of the third transmission shaft close to the second front hob drive pulley, and the eighth pulley is connected to the second ear picking box drive pulley to drive the second ear picking box.

7. A corn harvester header as claimed in claim 6, characterized in that: The other end of the second transmission shaft is provided with a fifth pulley, which is a double-row pulley and is connected to the first front hob driving pulley and the first ear picking box driving pulley to drive the first front hob and the first ear picking box; the other end of the third transmission shaft is provided with a sixth pulley, which is a double-row pulley and is connected to the second front hob driving pulley and the second ear picking box driving pulley to drive the second front hob and the second ear picking box.

8. A corn harvester header as claimed in claim 6 or claim 7, characterized in that: The header comprises a first tensioning device and a second tensioning device which are arranged on a frame; the first tensioning device is connected to a first transmission mechanism; and the second tensioning device is connected to a second transmission mechanism.

9. A corn harvester header as claimed in claim 1, characterized in that: The first transmission shaft is sleeved with a main pulley, and the main pulley is connected to the engine.

10. A corn harvester header as claimed in claim 6, characterized in that: The first ear picking box driving pulley drives at least one ear picking box, and the ear picking boxes are connected via a coupling.

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