combine

Abstract

Conventionally, because multiple hoisting devices are driven individually, even if some of the hoisting devices are not driven depending on the condition of the grain stalks in the field, the cutting blades and other equipment behind the undriven hoisting devices are still driven, resulting in a loss of energy efficiency. [Solution] A combine harvester having a harvesting device 4 in which a plurality of lifting devices 15 are arranged side by side in the left-right direction, and a cutting blade device 18 is provided behind the lifting devices 15 to cut the base of the grain stalks lifted by the lifting devices 15, wherein the plurality of lifting devices 15 are driven by an individual electric motor 25 for each of the lifting devices 15, and the cutting blade device 18 is divided in the left-right direction so that it can cut the grain stalks lifted by one or more lifting devices 15, and each divided cutting blade device 18 is driven by the motor 25 that drives the lifting devices 15.

Description

Technical Field

[0001] The present invention relates to a combine harvester having a cutting device provided with a plurality of pick-up devices.

Background Art

[0002] Conventionally, a cutting device configured to individually drive a plurality of pick-up devices arranged side by side in the left-right direction is known (Patent Document 1).

Prior Art Documents

Patent Documents

[0003]

Patent Document 1

Summary of the Invention

Problems to be Solved by the Invention

[0004] In the configuration of the known example, since it is simply a configuration in which a plurality of pick-up devices are individually driven, depending on the state of the crop straws in the field, even if some of the plurality of pick-up devices are not driven, the cutting blade device and the like behind the non-driven pick-up device are driven, resulting in a loss of energy efficiency. Also, in the configuration of the known example, although the pick-up speed of a plurality of pick-up devices can be individually changed, the working speed of the cutting blade and conveying device behind the pick-up device is constant, and there may be spillage of straws or conveyance disturbance due to the gap between the working speed of the pick-up device and the conveying speed. In addition, in order to ensure the driving force of the cutting device excluding the pick-up device, the engine serving as the drive source becomes large, and as a result, it is necessary to install an exhaust gas device (DPF), the size of the vehicle body also becomes large, and the price becomes high. The present application devises the configuration of the cutting device, realizes a cutting operation according to the crop straw situation in the field, aims to improve energy efficiency, and enables the installation of a small engine.

Means for Solving the Problems

[0005] The invention of claim 1 is a combine harvester having a harvesting device 4 in which a plurality of lifting devices 15 are arranged side by side in the left-right direction, and a cutting blade device 18 is provided behind the lifting devices 15 to cut the base of the grain stalks lifted by the lifting devices 15, wherein the plurality of lifting devices 15 are driven by an individual electric motor 25 for each of the lifting devices 15, and the cutting blade device 18 is divided in the left-right direction so that it can cut the grain stalks lifted by one or more lifting devices 15, and each divided cutting blade device 18 is driven by the motor 25 that drives the lifting devices 15. The invention of claim 2 is a combine harvester in which the harvesting device 4 has a lifting device 15, a cutting blade device 18, and a conveying device 19 for conveying the grain stalks cut by the cutting blade device 18, forming one lifting, harvesting, and conveying unit H, and at least a pair of left and right lifting, harvesting, and conveying units H are provided to enable lifting, harvesting, and conveying two rows of grain stalks, and a transfer conveying device 21 is connected to the left lifting, harvesting, and conveying unit H of the pair of lifting, harvesting, and conveying units H for transferring and conveying the grain stalks from the conveying device 19 to the feed chain 20. The invention of claim 3 is a combine harvester in which the motor 25 of the left lifting, harvesting, and conveying unit HL is made high-horsepower, out of the left and right lifting, harvesting, and conveying units HR and HL. The invention of claim 4 is a combine harvester in which the harvesting device 4 has one or more lifting devices 15, a cutting blade device 18, and a conveying device 19 for conveying the grain stalks cut by the cutting blade device 18 to constitute one lifting, harvesting, and conveying unit H, and multiple lifting, harvesting, and conveying units H are arranged side by side in the left-right direction, each lifting, harvesting, and conveying unit H is configured to be individually drivable by a motor 25 provided thereon, and the leftmost of the multiple lifting, harvesting, and conveying units H, the left lifting, harvesting, and conveying unit HL, is provided with a transfer and conveying device 21 for transferring and conveying the grain stalks to the feed chain 20, and the multiple lifting, harvesting, and conveying units H are configured to be selectively drivable, and at least the left lifting, harvesting, and conveying unit HL is configured to be constantly drivable. The invention of claim 5 is a combine harvester in which each motor 25 of the multiple lifting, harvesting, and conveying units H is driven by a secondary battery, which is a battery 30, and the left lifting, harvesting, and conveying unit HL, which has a transfer conveying device 21, is configured to be switchably driven by the battery 30 and the engine 24. The invention of claim 6 is a combine harvester in which each part of the combine harvester, excluding the harvesting device 4, is driven by an engine 24 mounted on the machine frame 1, and the engine 24 has an output configuration of 25 horsepower. The invention of claim 7 is a combine harvester having a plurality of lifting, harvesting, and conveying units H, wherein the motor 25 on the right side is stopped when the remaining charge of the battery 30 of the right lifting, harvesting, and conveying unit HR decreases. The invention of claim 8 is a combine harvester configured such that when the battery charge of each motor 25 of the multiple lifting, harvesting, and conveying units H decreases, it stops operating, and the left lifting, harvesting, and conveying unit HL, which has a transfer conveying device 21, is drivable by the driving force of the engine 24. [Effects of the Invention]

[0006] In the invention of claim 1, the multiple lifting devices 15 are configured to be driven by an individual electric motor 25 for each of the lifting devices 15, and the cutting blade device 18 is configured to be divided in the left-right direction so that it can cut the grain stalks lifted by one or more lifting devices 15, and each divided cutting blade device 18 is configured to be driven by the motor 25 that drives the lifting devices 15. Therefore, the harvesting device 4 drives the motors 25 of the lifting devices 15 and cutting blade devices 18 corresponding to the rows of grain stalks in the field to perform the harvesting work, and by stopping the motors 25 of the lifting devices 15 and cutting blade devices 18 that move through the field without rows of grain stalks, unnecessary energy consumption can be avoided. Therefore, the motor 25 that drives the combine harvester body only needs to have the capacity to drive all parts of the combine harvester other than the harvesting device 4, and a smaller motor 25 can be installed than that of a combine harvester equipped with the same number of harvesting devices 4, thus eliminating the need to install a so-called exhaust gas control device (DPF). In the invention of claim 2, the harvesting device 4 comprises a lifting device 15, a cutting blade device 18, and a conveying device 19 for conveying the grain stalks cut by the cutting blade device 18, forming one lifting, harvesting, and conveying unit H. At least a pair of left and right lifting, harvesting, and conveying units H are provided to enable lifting, harvesting, and conveying of two rows of grain stalks. The left of the pair of lifting, harvesting, and conveying units H, the left lifting, harvesting, and conveying unit HL, is connected to a transfer conveying device 21 that transfers and conveys the grain stalks from the conveying device 19 to the feed chain 20, thus enabling the transfer and conveying of grain stalks in the field. Depending on the planting state, the motor 25 of the right lifting, harvesting, and conveying unit HR of the two lifting, harvesting, and conveying units H is stopped, and only the motor 25 of the left lifting, harvesting, and conveying unit HL is driven to drive the lifting device 15, the cutting blade device 18, the conveying device 19, and the transfer conveying device 21. This allows the grain stalks harvested by the harvesting device 4 to be conveyed to the feed chain 20 of the threshing device 3 for threshing. On the other hand, by stopping the motor 25 of some of the harvesting and conveying units H of the harvesting device 4, unnecessary energy consumption can be avoided. In the invention of claim 3, of the left and right lifting, harvesting, and conveying units HR and HL, the motor 25 of the left lifting, harvesting, and conveying unit HL is of high horsepower. Therefore, not only the lifting device 15 and the cutting blade device 18 but also the transfer conveying device 21 are driven by the high-horsepower motor 25, allowing for stable operation. In the invention of claim 4, the harvesting device 4 comprises one or more lifting devices 15, a cutting blade device 18, and a conveying device 19 for conveying the grain stalks cut by the cutting blade device 18, forming one lifting, harvesting, and conveying unit H, and multiple lifting, harvesting, and conveying units H are arranged in parallel, and a transfer conveying device 21 for transferring and conveying the grain stalks to the feed chain 20 is connected to the leftmost lifting, harvesting, and conveying unit HL of the multiple lifting, harvesting, and conveying units H are configured to be selectively driveable, and at least the left lifting, harvesting, and conveying unit HL is constantly driven. With this configuration, depending on the planting state of the grain stalks in the field, the motors 25 of the lifting, harvesting, and conveying units H other than the left lifting, harvesting, and conveying unit H HL are stopped, and the motor 25 of the left lifting, harvesting, and conveying unit H drives the transfer conveying device 21 connected to the left lifting, harvesting, and conveying unit H HL, thereby conveying the grain stalks harvested by the harvesting device 4 to the feed chain 20 of the threshing device 3 for threshing. By stopping the lifting, harvesting, and conveying units H other than the left lifting, harvesting, and conveying unit H of the harvesting device 4, unnecessary energy consumption can be avoided. In the invention of claim 5, each motor 25 of the multiple lifting, harvesting, and conveying units H is driven by a secondary battery 30, and the left lifting, harvesting, and conveying unit HL, which has a transfer conveying device 21, is configured to be switchably driven by the battery 30 and the engine 24. Therefore, even if the battery 30 in the electric harvesting device 4 runs out, the left lifting, harvesting, and conveying unit HL, which is driven by the driving force of the engine 24, can be driven to perform the harvesting work. In the invention of claim 6, all parts of the combine harvester except the harvesting device 4 are driven by an engine 24 mounted on the machine frame 1, and the engine 24 has an output configuration of 25 horsepower. This allows for a smaller engine 24 while ensuring the performance of the harvesting work, and in some cases, it may be possible to avoid being subject to exhaust gas regulations. In the invention of claim 7, in a harvesting device 4 having a plurality of lifting, harvesting, and conveying units H, the motor 25 on the right side is stopped when the remaining charge of the battery 30 of the right lifting, harvesting, and conveying unit HR decreases. Therefore, even if the right lifting, harvesting, and conveying unit HR is not driven, the work can be continued by driving only the left lifting, harvesting, and conveying unit HL. In the invention of claim 8, when the battery charge of each motor 25 of the multiple lifting, harvesting, and conveying units H decreases, the electric operation is stopped. Furthermore, the left lifting, harvesting, and conveying unit HL, which has a transfer conveying device 21, is configured to be drivable by the driving force of the engine 24. Therefore, the engine 24 can drive only the left lifting, harvesting, and conveying unit HL, allowing the work to continue. [Brief explanation of the drawing]

[0007] [Figure 1] Left side view of a combine harvester. [Figure 2] Plan view of a combine harvester. [Figure 3] A schematic diagram of the rotary transmission mechanism of a harvesting device. [Figure 4] A schematic diagram of another embodiment of the rotary transmission mechanism of a harvesting device. [Figure 5] A schematic diagram of another embodiment of the rotary transmission mechanism of a two-row harvesting device. [Figure 6] A schematic diagram of another embodiment of the rotary transmission mechanism of a three-row harvesting device. [Figure 7] A schematic diagram of another embodiment of the rotary transmission mechanism of a four-row harvesting device. [Figure 8] Block diagram. [Figure 9] A schematic side view of a part of the harvesting device. [Figure 10] Plan view of the combine harvester's control panel. [Modes for carrying out the invention]

[0008] The following describes one embodiment of the present invention in detail with reference to the attached drawings. Directions are indicated for ease of understanding, but these do not limit the configuration. As shown in FIGS. 1 and 2, the combine harvester is provided with a traveling device 2 consisting of a pair of left and right crawlers for traveling on the soil surface below the machine body frame 1. A threshing device 3 for threshing and sorting is provided on the upper left side of the machine body frame 1, and a cutting device 4 for harvesting the cereal straw in the field is provided in front of the threshing device 3. The grains threshed and sorted by the threshing device 3 are stored in a grain tank 5 provided on the right side of the threshing device 3, and an operator's seat 6 for the operator to board is provided on the upper right side of the machine body frame 1. The cutting device 4 has a cutting frame 10. The cutting frame 10 is attached to the cutting transmission case 11 horizontally arranged in the left-right direction at the tip of the cutting support frame 12, and the base of the cutting support frame 12 is attached to the machine body frame 1 side so as to be rotatable up and down (FIG. 9). <XXX><XXX>As shown in FIG. 9, the cutting device 4 is provided with a weeding body 13 for weeding the standing cereal straw provided at the lower front side. The weeding body 13 is attached to the front side position of a weeding rod 14 in the front-rear direction, and the rear part of the weeding rod 14 is attached to the cutting transmission case 11 side. A raising device 15 for raising the standing cereal straw in the field is provided behind the weeding body 13, and a cutting blade device 18 for cutting the base of the standing cereal straw is provided at the lower part behind the raising device 15. A conveying device 19 for conveying the cereal straw cut by the cutting blade device 18 is provided behind the raising device 15 and the cutting blade device 18, and a transfer conveying device 21 for taking over the cut cereal straw is provided at the end of the conveying device 19 to the feed chain 20 provided on one side of the threshing device 3. The configuration of the raising device 15 is a known one. A driving gear 15A and a roller are provided vertically on a raising frame (not shown), and a raising chain with raising lugs 15B attached to the driving gear 15A and the roller so as to be able to rise and fall is wound around. The conventional cutting device 4 is configured such that a plurality of weeding bodies 13 and raising devices 15 are arranged side by side in the left-right direction with respect to the machine body traveling direction according to the number of cutting rows, and the cutting blade device 18 is provided so as to be located behind the entire width raised by all the raising devices 15.

[0010] It should be noted that there are some tags like

[0009] , , ,

[0010] , in the original text which seem to be incomplete or have incorrect tags in the given context. I have translated the text as accurately as possible based on the available information. If there are specific requirements or corrections for these tags, please let me know.Therefore, depending on the state of the crop straw in the field, some of the plurality of lifting devices 15 may be driven but not performing the lifting operation. Similarly, a situation may occur where a part of the cutting blade device 18 behind the lifting device 15 that is not performing the lifting operation is also not performing the cutting operation, resulting in energy efficiency loss. In addition, in order to ensure the driving force of the cutting device 4 capable of cutting multiple rows of crop straw, the engine 24 serving as the drive source becomes large, which leads to the need to install an exhaust gas device (DPF), an increase in the size of the vehicle body, and a problem of higher cost. Therefore, in a combine harvester having a cutting device 4 provided with a plurality of lifting devices 15 arranged side by side in the left - right direction and a cutting blade device 18 for cutting the base side of the crop straw lifted by the lifting device 15 behind the lifting device 15, the plurality of lifting devices 15 are configured to be driven by individual electric motors 25 for each one or more lifting devices 15, and the cutting blade device 18 is configured to be divided in the left - right direction so as to be able to cut the crop straw lifted by one or more lifting devices 15, and each of the divided cutting blade devices 18 is configured to be driven by the motor 25 that drives the lifting device 15.

[0011] Therefore, since a plurality of lifting - cutting - conveying units H each composed of a set of lifting device 15 and cutting blade device 18 are arranged in parallel in the left - right direction as the cutting device 4, depending on the standing state of the crop straw in the field, the motors 25 of the lifting device 15 and the cutting blade device 18 corresponding to the crop straw row can be driven to perform the cutting operation. Thus, the motors 25 of the lifting device 15 and the cutting blade device 18 moving in a field without a crop straw row can be stopped, avoiding wasteful energy consumption. Therefore, the engine 24 that drives the combine harvester body only needs to have the ability to drive each part of the combine other than the cutting device 4, and a smaller engine 24 than that of a combine harvester equipped with a cutting device 4 capable of cutting the same number of rows can be installed, and in some cases, it may be possible to eliminate the need to install a so - called exhaust gas countermeasure device (DPF). The harvesting device 4 comprises a lifting device 15, a cutting blade device 18, and a conveying device 19 for transporting the harvested grain stalks, forming a single lifting, harvesting, and transporting unit H. At least a pair of left and right lifting, harvesting, and transporting units H are provided to enable lifting, harvesting, and transporting two rows of grain stalks. A transfer conveying device 21 is connected to the left of the pair of lifting, harvesting, and transporting units H, which is the left lifting, harvesting, and transporting unit HL, to transfer the grain stalks from the conveying device 19 to the feed chain 20 (Figure 5).

[0012] Therefore, depending on the planting state of the grain stalks in the field, the motor 25 of the right lifting, harvesting, and conveying unit HR of the two lifting, harvesting, and conveying units H can be stopped, and only the motor 25 of the left lifting, harvesting, and conveying unit HL can be driven to drive the lifting device 15, the cutting blade device 18, the conveying device 19, and the transfer conveying device 21. This allows the grain stalks harvested by the harvesting device 4 to be conveyed to the feed chain 20 of the threshing device 3 for threshing. On the other hand, by stopping the motor 25 of the right lifting, harvesting, and conveying unit HR of the harvesting device 4, unnecessary energy consumption can be avoided. Of the left and right lifting, harvesting, and conveying units, the motor 25 of the left lifting, harvesting, and conveying unit HL may be of higher horsepower. Therefore, since not only the lifting device 15 and the cutting blade device 18 but also the transfer and conveying device 21 are driven by the high-horsepower motor 25, stable operation can be achieved.

[0013] The harvesting device 4 comprises one or more lifting devices 15, a cutting blade device 18, and a conveying device 19 for conveying the grain stalks cut by the cutting blade device 18, forming one lifting, harvesting, and conveying unit H. Multiple lifting, harvesting, and conveying units H are arranged side by side in the left-right direction, and each lifting, harvesting, and conveying unit H is configured to be individually drivable by a motor 25 provided for it. The leftmost of the multiple lifting, harvesting, and conveying units H, the left lifting, harvesting, and conveying unit HL, is provided with a transfer and conveying device 21 for transferring and conveying the grain stalks to the feed chain 20. Multiple lifting, harvesting, and conveying units H are configured to be selectively drivable, and at least the left lifting, harvesting, and conveying unit HL is configured to be constantly drivable. Therefore, depending on the planting state of the grain stalks in the field, the motors 25 of the lifting, harvesting, and conveying units H other than the left lifting, harvesting, and conveying unit HL can be stopped, and the motor 25 of the left lifting, harvesting, and conveying unit HL drives the transfer conveying device 21 connected to the left lifting, harvesting, and conveying unit HL, thereby conveying the grain stalks harvested by the harvesting device 4 to the feed chain 20 of the threshing device 3 for threshing. By stopping the lifting, harvesting, and conveying units H other than the left lifting, harvesting, and conveying unit HL of the harvesting device 4, unnecessary energy consumption can be avoided.

[0014] In other words, for example, in a 3-row harvester equipped with 3 sets of lifting, harvesting, and conveying units H (Figure 6), it becomes possible to harvest not only 3 rows but also 1 or 2 rows; in a 4-row harvester equipped with 4 sets of lifting, harvesting, and conveying units H (Figure 7), it becomes possible to harvest not only 4 rows but also 1 to 3 rows; in a 5-row harvester equipped with 5 sets of lifting, harvesting, and conveying units H, it becomes possible to harvest not only 5 rows but also 1 to 4 rows; and in a 6-row harvester equipped with 6 sets of lifting, harvesting, and conveying units H, it becomes possible to harvest not only 6 rows but also 1 to 5 rows. In this case, the diagram of the transmission configuration for multi-row harvesting with four or more rows is omitted, but this can be achieved by increasing the number of intermediate lifting, harvesting, and conveying units HC in Figure 7. Furthermore, it is preferable to configure the system to reduce the number of harvested rows by stopping the motors 25 of the rightmost of the multiple lifting, harvesting, and conveying units H in order.

[0015] Furthermore, a transfer and conveying device 21 is provided on the left side of the left-lifting and harvesting conveying section HL to transfer and convey the grain stalks to the feed chain 20, and the transfer and conveying device 21 is driven by a motor 25. However, the transfer and conveying device 21 may also be configured to receive the drive rotation of the engine 24 that constantly transmits power to the feed chain 20. In other words, the energy consumed by the transfer and conveying device 21 alone is small, and since the transfer and conveying device 21 is located at the rear of the harvesting device 4, engine drive may be chosen over motor drive if it is more rational. The transfer conveying device (handling depth adjustment device) 21 is a known device and is configured to have a base-side conveying device 21A and a tip-side conveying device 21B. The base of the base-side conveying device 21A is rotatably attached to the fixed side, and the tip of the base-side conveying device 21A is rotatable, so that the gripping position of the grain stalk conveyed from the conveying device 19 is changed in the direction of the stalk to adjust the handling depth. Furthermore, although the configuration of the cutting blade device 18 is arbitrary, as an example, although not shown in the illustration, a fixed blade and a movable blade are stacked vertically, the fixed blade is formed to be the same as the cutting width in the left-right direction and attached to the cutting blade frame, the movable blade is mounted on the cutting blade frame so as to be movable in the left-right direction, this movable blade is divided into left and right sections, and the rotation of the lower drive shaft 40 provided in the cutting transmission case 11 is transmitted to each movable blade to drive them.

[0016] Each of the motors 25 in the multiple lifting, harvesting, and conveying units H is powered by a secondary battery 30, and the left lifting, harvesting, and conveying unit HL, which has a transfer conveying device 21, may be configured to be switchably powered by the battery 30 and the engine 24. Therefore, even if the battery 30 in the electric harvesting device 4 runs out, the left-hand lifting harvesting conveying unit HL, which is driven by the engine 24, can be driven to perform the harvesting work. All parts of the combine harvester, excluding the harvesting device 4, are driven by an engine 24 mounted on the machine frame 1, and the engine 24 has an output configuration of 25 horsepower. Therefore, while ensuring the performance of the harvesting operation, the engine 24 can be made smaller, and in some cases, it may be possible to avoid being subject to exhaust gas regulations. In a harvesting device 4 having multiple lifting, harvesting, and conveying units H, the motor 25 on the right side is stopped when the remaining charge of the battery 30 of the right lifting, harvesting, and conveying unit HR decreases. Therefore, even if the right lifting, harvesting, and conveying unit HR is not driven, the lifting, harvesting, and conveying operation can be continued by driving only the left lifting, harvesting, and conveying unit HL.

[0017] The drive configuration of the multiple lifting, harvesting, and conveying units H is arbitrary, but for example, when the battery 30 of the left lifting, harvesting, and conveying unit HL is low, and the battery 30 of the right lifting, harvesting, and conveying unit HR still has remaining charge, the right lifting, harvesting, and conveying unit HR can be electrically driven by the motor 25 until the battery 30 of the right lifting, harvesting, and conveying unit HR is low, while the left lifting, harvesting, and conveying unit HL, whose battery 30 is low, can be driven by the engine 24. Furthermore, when the battery level of each motor 25 of the multiple lifting, harvesting, and conveying units H decreases, they are stopped from operating. The left lifting, harvesting, and conveying unit HL, which has a transfer conveying device 21, may also be configured to be driven by the driving force of the engine 24. Therefore, the engine 24 can drive only the left-side lifting, harvesting, and conveying unit HL, allowing the work to continue.

[0018] The drive for each part of the harvesting device 4 is electrified, and the other parts of the combine harvester, excluding the harvesting device 4, are driven by the engine 24, which has an output of 25 horsepower. In other words, the small 2- to 6-row class harvester is equipped with a motor 25 capable of outputting an output equivalent to 5 horsepower. Therefore, the motor 25 that drives the combine harvester body only needs to have the capacity to drive all parts of the combine harvester other than the harvesting device 4, and it may be possible to install a smaller engine 24 than that of a combine harvester equipped with the same number of harvesting devices 4, thus eliminating the need to install a so-called exhaust gas control device (DPF). Motors 25 are installed one on each side of the harvesting device 4. Therefore, the mounted motor 25 can be made smaller. In addition, by stopping the power supply from any of the motors 25, partial drive of the harvesting device 4 can be enabled, contributing to energy saving.

[0019] Furthermore, in the harvesting device 4 of the present invention, by electrifying the driving force of the lifting device 15 and the cutting blade device 18, which are driven by the motor 25, to the equivalent of 5 horsepower, and by using the engine 24 to power each part of the combine harvester to 25 horsepower, the overall output performance of the combine harvester can be made equivalent to that of a normal 30 horsepower. Figure 3 shows an example of a schematic diagram of the transmission configuration of the harvesting device 4. The lower transmission shaft 40 is connected to the output shaft 35 of the motor 25 of the right lifting harvesting conveying unit HR via a bevel gear B, and the drive rotation of the lower transmission shaft 40 is transmitted to the cutting blade device 18. Furthermore, the right transmission shaft 51 is connected to the output shaft 35 via a bevel gear B, and a bevel gear B is provided in the middle of the right transmission shaft 51 to branch and transmit the rotation to the star wheel 36 of the conveying device 19, the stalk conveying device 37, and the ear conveying device 38. The rotation is then transmitted to the lifting device 15 via a bevel gear B provided at the top of the right transmission shaft 51.

[0020] Furthermore, the transmission configuration of the left lifting and harvesting conveying section HL to the lifting device 15 is as follows: the lower transmission shaft 40 is connected to the output shaft 35 of the motor 25 via a bevel gear B, and the drive rotation of the lower transmission shaft 40 is transmitted to the cutting blade device 18. In addition, the left transmission shaft 50 is connected to the output shaft 35 via a bevel gear B, and a bevel gear B is provided in the middle of the left transmission shaft 50 to branch and transmit the rotation to the star wheel 36 of the conveying device 19, the base conveying device 37, and the tip conveying device 38. A bevel gear B is provided at the top of the left transmission shaft 50. The bevel gear B transmits rotation to the lifting device 15, and one side of the intermediate shaft 41 is configured to transmit rotation to a pair of lifting devices 15, while the other side of the intermediate shaft 41 is configured to transmit rotation to the transfer and conveying device 21 via the bevel gear B. Furthermore, the other side of the intermediate shaft 41 is configured to transmit rotation to a rotating shaft 42 via the bevel gear B, and a pulley 45 is attached to the rotating shaft 42 via a clutch (unidirectional rotation clutch) 44, and the pulley 45 is driven by the engine 24.

[0021] In other words, the left-hand lifting, harvesting, and conveying unit HL is configured to be driveable by either the motor 25 or the engine 24. Therefore, even if the power supply from the battery 30 is stopped (or becomes impossible), at least the left lifting, harvesting, and conveying unit HL can be driven using the engine 24 as a power source, allowing the harvesting work to continue. Specifically, a clutch (not shown) is provided in the transmission path between the pulley 45 and the engine 24. While the left lifting, harvesting, and conveying unit HL is driven by the motor 25, only the rotating shaft 42 rotates due to the clutch 44, and the rotation of the pulley 45 is stopped. When the left lifting, harvesting, and conveying unit HL is driven by the engine 24, the pulley 45 is driven to rotate, and the various parts of the left lifting, harvesting, and conveying unit HL are driven via the rotating shaft 42.

[0022] As shown above, the harvesting device 4 in Figure 3 is configured to harvest and transport grain stalks using four lifting devices 15 and two cutting blade devices 18, resulting in a four-row harvesting configuration. Figure 4 shows the transmission configuration of another embodiment of the harvesting device 4. The drive rotation of the motor 25 of the right lifting harvesting conveying unit HR is branched and transmitted to the cutting blade device 18 via a bevel gear B and a lower transmission shaft 40 from the output shaft 35. Furthermore, the right transmission shaft 51 is connected to the output shaft 35 via a bevel gear B, and a bevel gear B is provided in the middle of the right transmission shaft 51 to branch and transmit the rotation to the star wheel 36 of the conveying device 19, the stalk conveying device 37, and the ear conveying device 38. The rotation is then transmitted to the lifting device 15 via a bevel gear B provided at the top of the right transmission shaft 51. The lower transmission shaft 40, which is branched and transmitted to the cutting blade device 18, is configured to transmit rotation to a separately provided lifting device 15.

[0023] Therefore, the right-hand lifting, harvesting, and conveying unit HR lifts, harvests, and conveys two rows of grain stalks. Furthermore, the left transmission shaft 50 is connected to the output shaft 35 of the motor 25 of the left lifting, harvesting, and conveying unit HL via a bevel gear B. The drive rotation is branched and transmitted to the cutting blade device 18 via a bevel gear B in the middle of the left transmission shaft 50. The rotation is branched and transmitted to the star wheel 36 of the conveying device 19, the stalk conveying device 37, and the ear-tip conveying device 38 via a bevel gear B in the middle of the left transmission shaft 50. The rotation is transmitted to the right lifting device 15 via a bevel gear B in the upper part of the left transmission shaft 50. In addition, the rotation is transmitted to the lower transmission shaft 40 that transmits rotation to the cutting blade device 18 via a bevel gear B via another intermediate shaft 41. The intermediate shaft 41 transmits rotation to a lifting device 15 separately provided on one side of the branch, and the rotation is transmitted to the transfer conveying device 21 via a bevel gear B on the other side of the intermediate shaft 41 (Figure 4).

[0024] In this configuration, the other side of the intermediate shaft 41 is configured to transmit rotation to a rotating shaft 42 via a bevel gear B, a pulley 45 is attached to the rotating shaft 42 via a clutch 44, and the pulley 45 is driven by the engine 24 (Figure 4). Figure 5 shows the transmission configuration of another embodiment of the harvesting device 4, in which the right lifting harvesting conveying section HR and the left lifting harvesting conveying section HL are each independently driven by separate motors 25, and the left lifting harvesting conveying section HL is provided with a transfer conveying device 21 driven by a motor 25 that transfers and conveys the grain stalks to the feed chain 20. Figure 6 shows the transmission configuration of another embodiment of the harvesting device 4, in which an intermediate lifting and harvesting and conveying section HC is provided between the right lifting and harvesting and conveying section HR and the left lifting and harvesting and conveying section HL, and a transfer and conveying device 21 is provided in the left lifting and harvesting and conveying section HL for transferring and conveying the grain stalks to the feed chain 20.

[0025] Figure 7 shows the transmission configuration of another embodiment of the harvesting device 4, in which multiple (2) intermediate lifting, harvesting, and conveying units HC are provided between the right lifting, harvesting, and conveying unit HR and the left lifting, harvesting, and conveying unit HL, and a transfer and conveying device 21 is provided in the left lifting, harvesting, and conveying unit HLC for transferring and conveying the grain stalks to the feed chain 20, and each lifting, harvesting, and conveying unit H is driven by an individual motor 25. A left-side transmission shaft 50 is provided to the right of the left motor 25, and the left motor 25 is positioned to the left (outside) of the left-side transmission shaft 50. In this embodiment, the harvesting device 4 is a small 4-row class, and the power required to drive this harvesting device 4 is about 5 horsepower. Therefore, it is configured to be equipped with two motors 25 that together provide 5 horsepower. One motor 25 is installed on each side of the harvesting device 4, and the left motor shaft 50 is positioned to the right (inside) of the left motor. The right-side transmission shaft 51 is positioned to the left of the right motor. The upper surfaces of the left and right motors 25 are positioned above the lower transmission shaft 40. Therefore, this prevents the motor 25 from coming into contact with the field surface.

[0026] The drive of the harvesting device 4 is electrified, and the driving force equivalent to 25 horsepower of the engine 24 is consumed by the travel device 2 and the threshing device 3. Since the driving force required for the small 4-row harvesting device 4 is about 5 horsepower, a motor-25 with a capacity equivalent to 5 horsepower is installed. One motor 25 for driving the harvesting mechanism is installed on each side of the harvesting device 4. The right side of the left motor 25 is positioned to the left of the left transmission shaft. The left side of the right motor is positioned to the right of the right transmission shaft 51. The upper surfaces of the left and right motors 25 are positioned above the lower transmission shaft 40. The transfer conveying device 21 is driven by the left-side motor 25. Therefore, the transmission path from the left motor 25 to the handover conveying device 21 can be made shorter.

[0027] The left motor 25 is made to have a larger capacity (power) than the right motor 25 (for example, the left motor 25 is equivalent to 3 horsepower and the right motor 25 is equivalent to 2 horsepower). Therefore, the left lifting, harvesting, and conveying unit HL consumes more power than the right lifting, harvesting, and conveying unit HR because it is equipped with a transfer conveying device 21, but the left battery 30 can supply sufficient power. Rotation is transmitted between each motor 25 and the lifting device 15, cutting blade device 18, conveying device 19, and transfer conveying device 21 of the lifting, cutting, and conveying unit H via shafts and gears (bevel gears B) mounted on the shafts. Therefore, a portion of the bevel gear B, which is a rotational transmission component, can be housed inside the harvesting transmission case 11, thereby suppressing interference with the conveyed grain stalks. In other words, although not shown in the diagram, a lower transmission shaft 40 is mounted inside the harvesting transmission case 11, and rotation is transmitted from the lower transmission shaft 40 to the lifting device 15, the cutting blade device 18, the conveying device 19, and the handover conveying device 21 via a bevel gear B.

[0028] Although not shown in the diagram, the power transmission between each motor 25 and each part of the lifting, harvesting, and conveying unit H may also be performed by belts and pulleys. Therefore, it can be constructed at a lower cost than using gears. The drive of the lifting device 15 and the cutting blade device 18 is divided into left and right sections, and the lifting, cutting, and conveying section H of the rightmost lifting device 15 and cutting blade device 18 of the cutting device 4 is configured to be separate from the other lifting, cutting, and conveying sections H. In other words, in Figure 3, only the rightmost lifting device 15 and the rightmost cutting blade device 18 are separated to form the lifting, cutting, and transporting unit H. This configuration allows the cutting operation of the left-side lifting, cutting, and transporting unit H to continue using the engine 24 even if the battery 30 runs out and electric drive becomes impossible. The drive of the lifting device 15, the cutting blade device 18, and the conveying device 19 is divided into left and right sections, each designated as a lifting, cutting, and conveying section H, with only the two lifting devices 15 on the right side and the cutting blade device 18 on the right side being separated (Figure 4).

[0029] In other words, as shown in Figure 3, the lifting device 15 and the right cutting blade device 18 of the rightmost right lifting, harvesting, and conveying unit HR are configured to be separate from the other lifting, harvesting, and conveying units H of the harvesting unit 4. When the right battery 30 runs out and the right lifting, harvesting, and conveying unit HR can no longer be electrically driven, the two lifting devices 15 of the left lifting, harvesting, and conveying unit HL are driven by the engine 24. Therefore, the two lifting devices 15 of the left lifting and harvesting conveying unit HL allow the harvesting work on the two rows on the left side to be continued by driving the engine 24. The rotation of the cutting blade device 18 of each lifting and harvesting conveying unit H is sensed with one pulse per rotation, and the left and right pulses are controlled to match. Therefore, the lifting and harvesting operations of multiple lifting and harvesting transport units H can be driven in synchronous order, suppressing variations in work speed. This allows for regular and coordinated control of the movement of each part of each lifting and harvesting transport unit H, thereby suppressing vibration.

[0030] Furthermore, when transporting harvested grain stalks, the transported grain stalk layer can be kept stable in a consistent state, preventing clogging. Of the multiple lifting, harvesting, and conveying units H, at least the motor 25 of the right-hand lifting, harvesting, and conveying unit H is configured to be stoppable. Therefore, depending on the planting conditions of the grain stalks in the field, the drive of some of the lifting, harvesting, and conveying units H can be stopped, thereby reducing the consumption of the battery 30 and suppressing the generation of noise and vibration. If three lifting, harvesting, and conveying units H are installed, the motor 25 of only the right-hand lifting, harvesting, and conveying unit H may be stopped, or the motor 25 of the right-hand and middle lifting, harvesting, and conveying unit H may be selected to be stopped depending on the remaining charge of the battery 30.

[0031] If the number of harvesting rows decreases due to field conditions (working conditions), the motors 25 will be stopped sequentially, starting with the rightmost of the multiple lifting, harvesting, and conveying units H. Therefore, depending on the planting conditions of the grain stalks in the field, the drive of some of the multiple lifting, harvesting, and conveying units H can be stopped, thereby reducing the consumption of the battery 30 and suppressing the generation of noise and vibration. When the battery level of the 30 drops, the motor on the right side will stop. In a harvesting device 4 having a pair of left and right lifting and harvesting conveying units H, the right-side motor 25 is configured to stop when the remaining charge of the battery 30 decreases. Furthermore, in a harvesting device 4 having multiple lifting, harvesting, and conveying units H, a battery 30 can be provided for each lifting, harvesting, and conveying unit H, and the capacity of the battery 30 of the left lifting, harvesting, and conveying unit HL can be configured to be larger than that of the battery 30 of the right lifting, harvesting, and conveying unit HR.

[0032] The multiple motors 25 are configured to be able to be stopped individually. If the number of harvesting rows decreases or the battery level of the battery 30 drops, the motor on the right side 25 is stopped. A switch 55A for stopping the motor on the right side 25 is provided on the left control panel 56. The system is designed to allow for flexible adjustment of the harvesting speed. In this configuration, the cutting speed can be freely changed by adjusting the speed (rotational speed) of the motor 25 through control by a controller (not shown in the diagram). Therefore, in conventional small harvesting models, changing the speed of the entire harvesting device required changing the gears in the transmission (not shown), and changing the gears in the transmission required stopping the machine each time. However, in the present invention, the rotation speed of the lifting harvesting conveying unit H can be changed with the motor-25, so it is not necessary to stop the machine as in the conventional method.

[0033] In this case, the working speed of the harvesting device 4 is configured to increase or decrease in accordance with the vehicle speed. In other words, although not shown in the diagram, the rotation of the engine 24 is changed by a transmission (HST) and transmitted to the running gear 2 to change the running speed, thereby changing the amount of power supplied to the motor 25. This configuration synchronizes the rotation of the motor 25 with the running speed. Therefore, the harvesting speed of the harvesting device 4 and the working speed of the threshing device 3, etc., are matched, enabling smooth operation and improving work efficiency. Furthermore, although not shown in the diagram, the tilt speed gear that was previously located inside the transmission case can be eliminated, resulting in a smaller and lighter transmission case. Furthermore, the configuration is such that the rotation speed of motor 25 is increased when the vehicle is in the tilted-over mode. Therefore, even if the grain stalks in the field have fallen over, harvesting can be carried out reliably and smoothly.

[0034] In this case, a tilting switch 55 for the tilting mode is provided on the left control panel 55B of the control unit 6. In Figure 10, 46 is the front panel, 47 is a touch-panel monitor, 48 is a power steering lever for controlling the machine's direction of travel and the up-and-down movement of the harvesting device 4, 49 is the discharge lever, and 59 is the auxiliary transmission lever. A lodging switch 55 for the lodging mode is provided on the left control panel 56. In this case, when the pulley 45 is driving the lifting, harvesting, and conveying unit H with the driving force of the engine 24, and the machine is in lodging mode due to the lodging switch 55, if the machine detects that it is traveling at a speed exceeding the specified speed, the lodging mode is automatically canceled.

[0035] In other words, during lodging operations, the working rotation of the harvesting device 4 needs to be faster than the normal harvesting speed. Attempting to rotate the harvesting device 4 faster than the standard speed while the vehicle speed is at the standard speed may lead to damage to the harvesting device 4. Therefore, if travel exceeding the specified vehicle speed (e.g., 0.6 m / s) is detected, the lodging mode is deactivated and the working speed of the harvesting device 4 is synchronized with the vehicle speed. Therefore, when the harvesting device 4 is operated by the engine 24 using the pulley 45, if the machine detects that it is traveling at a speed exceeding the specified speed, the lodging mode is automatically canceled to prevent the harvesting device 4 from rotating too much. A speed change switch 57 is provided that allows the speed of the left and right motors 25 to be changed individually. Therefore, depending on the planting conditions of the grain stalks in the field, the rotation speed of each motor 25 of the multiple rows of the lifting, harvesting, and conveying unit H can be individually changed by the speed change switch 57, depending on the presence of lodged grain stalks in only some areas or when the amount of straw on the grain stalks is small. This allows for partial stopping depending on the planting conditions of the grain stalks, suppressing the consumption of the battery 30 and preventing noise.

[0036] The location of the speed change switch 57 is arbitrary, but as an example, the speed change switch 57 is installed on the main gear shift lever 58 located on the left control panel 56. Therefore, by providing a speed change switch 57 on the main gear lever 58 used to change the driving speed, operability can be improved. The speed change switch 57 is located on the main gear shift lever 58 on the left control panel 56. Furthermore, although not shown in the diagram, the speed change switch 57 may be provided in two units on the left control panel 56, one for each of the left and right motors 25, and arranged side by side. Therefore, by operating the speed change switch 57, the working speed of the lifting, harvesting, and conveying unit H can be increased to accommodate situations such as lodging in only a portion of the field or when the amount of straw is small. The speed change switch 57 in this embodiment is configured to increase the speed of the motor 25 on the side on which the speed change switch 57 is pressed.

[0037] For example, the speed change switch 57 may be configured so that the rotation speed of the motor 25 increases only when it is pressed. Therefore, when the operation of the speed change switch 57 is stopped, the rotation of the motor 25 returns to its original speed, preventing the user from forgetting to perform the reset operation and improving the operability of changing the working speed of the lifting, harvesting, and conveying unit H. Furthermore, the method of operating the speed change switch 57 is arbitrary. It is also possible to configure the motor 2 to increase its rotation speed not only when the speed change switch 57 is operated, but also between the ON operation and the OFF operation, or to automatically return to the original rotation speed after a predetermined time has elapsed since the ON operation. In this embodiment, operating the speed change switch 57 increases the working speed by approximately 10%.

[0038] Alternatively, the configuration may be such that when both speed change switches 57 are pressed, the speed of both motors 25 increases. Therefore, usability can be improved. The load on the harvesting device 4 is calculated from the rotational speed and voltage of the motor 25, and if the load increases, the motor 25's rotational speed is increased. In other words, the control unit 60 constantly detects the load state of the motor 25 using a tachometer 61 and a voltmeter 62 installed on the motor 25, and when it determines that the workload of each lifting, harvesting, and conveying unit H has increased, it automatically increases the rotational speed of the motor 25. Therefore, by operating each of the multiple lifting, harvesting, and conveying units H in an optimal state, lifting stagnation and conveying blockages in the conveying device 19 can be prevented, thereby improving work efficiency.

[0039] Similarly, the control unit 60 calculates the load on the lifting, harvesting, and conveying unit H from the rotational speed and voltage using the tachometer 61 and voltmeter 62, and controls the motor 25 to reduce its rotational speed if the load decreases. Therefore, by operating each of the multiple lifting, harvesting, and conveying units H in an optimal state, it is possible to prevent lifting failures and conveying failures of the conveying device 19, thereby improving work efficiency. Therefore, by slowing down the rotation of the lifting, harvesting, and conveying unit H, the layer of grain stalks is made thicker, preventing stalk spillage. The automatic control based on load detection by the tachometer 61 and voltmeter 62 of the control unit 60 is applied when the harvesting device 4 is operating at a standard speed. In other words, the harvesting speed in lodging mode is faster than the harvesting speed synchronized with the vehicle speed, and since the motor 25 is already under load, the automatic control based on load detection is applied when the harvesting device 4 is operating at the standard speed.

[0040] The load detection by the tachometer 61 and voltmeter 62 of this control unit 60 is performed on the left motor 25 (left side), which has the larger capacity among the multiple motors 25. In other words, if the capacity of the battery 30 decreases, the motor 25R of the right-side lifting, harvesting, and conveying unit H is stopped, and the left-side lifting, harvesting, and conveying unit H performs the lifting, harvesting, and conveying. Therefore, the load detection of the left motor 25 of the left-side lifting, harvesting, and conveying unit H is performed because it is used more frequently and is prone to heavy loads. If some or all of the motors 25 detect an abnormal overload, the drive of the harvesting device 4 is stopped. Therefore, damage to each part of the harvesting device 4 can be prevented. If some or all of the motors 25 detect an abnormal overload, the engine 24 is shut down.

[0041] Therefore, since the drive of the entire combine harvester, including not only the harvesting device 4 but also the threshing device 3, is stopped, malfunctions of the entire combine harvester can be prevented. The battery 30 can be installed at any location, but as an example, it is configured to be installed in the harvesting device 4. Therefore, the connection between the motor 25 and the battery 30 is made easier, and the wiring between the motor 25 and the battery 30 can be prevented from interfering with the conveyed grain stalks. For example, it may be installed above the mounting portion between the harvesting transmission case 11 and the grass divider 14. Alternatively, the lifting device 15 may be mounted on the rear side of the lifting device 15, on the grass-dividing rod 14 which is off the grain stalk transport path, straddling both the grass-dividing rod 14 and the lifting device 15.

[0042] Alternatively, the battery 30 may be installed on the front part of the aircraft frame 1. Therefore, the weight of the harvesting device 4 can be reduced, and the weight load on each part of the harvesting device 4 can be decreased. In this embodiment, the battery 30 may be installed between the control unit 6 and the transmission case. In other words, conventionally, the driving force of the engine 24 was transmitted to the harvesting device 4 from the transmission case by a belt (pulley) transmission. However, in the present invention, the harvesting device 4 is driven by a battery 30 and a motor 25, so there is no longer space for the conventional belt transmission mechanism, and the battery 30 can be placed in the space where the conventional belt transmission mechanism would have been installed. This allows for effective use of the space on the aircraft frame 1 and also reduces the weight of the harvesting device 4.

[0043] In this case, the battery 30 is installed in a location accessible from the control unit 6. Therefore, battery replacement can be done smoothly. When the battery 30 is installed on the aircraft frame 1, the wiring route from the battery 30 to the motor 25 is routed along the mission case 65 to the motor 25. Therefore, it becomes easier to secure the wiring, and damage to the wiring (breakage) is prevented. A drive switch 67 for motor operation is provided around the motor 25. Therefore, the motor 25 can be easily driven using the drive switch 67 during maintenance, making maintenance work easier. This drive switch 67 drives the motor 25 only when the switch is operated. In this case, for example, the drive switch 67 is normally powered on when operated, and the power is turned off when the operation is stopped. However, the method of operating the drive switch 67 is arbitrary, and the power can be turned off by operating the switch again, or a separate off switch may be provided.

[0044] The charging line for battery 30 will be located to the right of the center of the harvesting area. In other words, the battery 30 is installed to the right of the center of the harvesting device 4 in the direction of travel. Therefore, access from the control unit 6 is improved, making it easier to confirm the operation of the harvesting device 4. Furthermore, the battery 30 is charged from an external source (for example, a rice harvesting vehicle parked in the field). The wiring for driving the motor 25 allows for charging of the battery 30. In other words, a charging connector (not shown) is provided in the wiring from the battery 30 to the motor 25, and a charging cable (not shown) is connected to this connector to charge the battery 30.

[0045] Therefore, the wiring for the motor 25 extends to the tip of the harvesting device 4, allowing the battery 30 to be charged via this wiring, thus facilitating the charging process. For example, the tip of the harvesting device 4 is brought close to the edge of the ridge, and the battery is charged from the rice hulling vehicle parked on the ridge. Therefore, the distance to the rice hulling wheel can be reduced, the charging cable can be shortened, and the charging process can be made easier. In a configuration that allows the motor 25 and engine 24 to be driven together, the pulley 45 enables the harvesting device 4 to be driven by the engine 24's driving force. With the lifting harvesting conveying unit H operated by the engine 24, the motor 25 is rotated by the rotation of the engine 24, and the battery 30 can be charged by the regenerative energy generated when the motor 25 rotates.

[0046] When the engine 24 drives each lifting, harvesting, and conveying section H of the harvesting device 4, the battery 30 can be charged using regenerative energy. When the remaining charge of the battery 30 falls below a specified value, the system automatically switches from electric drive of the battery 30 and motor 25 to power drive of the engine 24. Therefore, the operator can continue the lifting, harvesting, and transporting operation without having to switch the drive source of the harvesting device 4 each time, improving operability and work efficiency. The harvesting cylinder 70 that moves the harvesting device 4 up and down is a mini-motion package and is configured to receive current from the motor 25. The cylinder in the so-called mini-motion package is a motor-driven hydraulic cylinder. In conventional machines, the hydraulic equipment cannot operate unless the engine is running. However, by using the harvesting up and down cylinder 70 of the mini-motion package, even when the engine 24 is stopped, the motor 25 can be operated using the power from the battery 30, allowing the harvesting device 4 to move up and down. [Explanation of symbols]

[0047] 1...Machine frame, 2...Traction mechanism, 3...Threshing mechanism, 4...Cutting mechanism, 5...Grain tank, 6...Control unit, 10...Cutting frame, 11...Cutting transmission case, 12...Cutting support frame, 13...Separator, 14...Separator rod, 15...Lifting device, 18...Cutting blade device, 19...Conveying device, 20...Feed chain, 21...Transfer conveying device, 24...Engine, 25...Motor, 30...Battery, 35...Output shaft, 36...Star wheel, 37 ...Stem base conveying device, 38...Ear tip conveying device, 40...Lower transmission shaft, 41...Intermediate shaft, 42...Rotating shaft, 44...Clutch, 45...Pulley, 50...Left electric shaft, 51...Right transmission shaft, 53...Case, 55...Lodging switch, 56...Left control panel, 57...Speed ​​change switch, 58...Main shift lever, 60...Control unit, 61...Tachometer, 62...Voltmeter, 65...Transmission case, 67...Drive switch, 70...Harvesting upper and lower cylinder.

Claims

1. A combine harvester having a harvesting device (4) in which a plurality of lifting devices (15) are arranged side by side in the left-right direction, and a cutting blade device (18) is provided behind the lifting devices (15) to cut the base of the grain stalks lifted by the lifting devices (15), wherein the plurality of lifting devices (15) are driven by an individual electric motor (25) for each of the lifting devices (15), and the cutting blade device (18) is divided in the left-right direction so that it can cut the grain stalks lifted by one or more lifting devices (15), and each divided cutting blade device (18) is driven by the motor (25) that drives the lifting devices (15).

2. The harvesting device (4) in claim 1 comprises a lifting device (15), a cutting blade device (18), and a conveying device (19) for conveying the grain stalks cut by the cutting blade device (18), forming a single lifting, harvesting, and conveying unit (H), and at least a pair of left and right lifting, harvesting, and conveying units (H) are provided to enable lifting, harvesting, and conveying two rows of grain stalks, and a transfer conveying device (21) is connected to the left lifting, harvesting, and conveying unit (H) of the pair of lifting, harvesting, and conveying units (H) for transferring and conveying the grain stalks from the conveying device (19) to the feed chain (20), thereby forming a combine harvester.

3. The combine harvester according to claim 2, wherein the motor (25) of the left lifting, harvesting, and conveying unit (HL) is of high horsepower, compared to the right lifting, harvesting, and conveying unit (HR) and the left lifting, harvesting, and conveying unit (HL).

4. The harvesting device (4) according to claim 1 comprises one or more lifting devices (15), a cutting blade device (18), and a conveying device (19) for conveying the grain stalks cut by the cutting blade device (18), forming one lifting, harvesting, and conveying unit (H), and a plurality of lifting, harvesting, and conveying units (H) arranged side by side in the left-right direction, each lifting, harvesting, and conveying unit (H) being individually drivable by a motor (25) provided thereon, and a transfer conveying device (21) for transferring and conveying the grain stalks to a feed chain (20) is provided in the leftmost lifting, harvesting, and conveying unit (HL) of the plurality of lifting, harvesting, and conveying units (H), and the plurality of lifting, harvesting, and conveying units (H) are configured to be selectively drivable, and at least the left lifting, harvesting, and conveying unit (HL) is configured to be constantly drivable.

5. The combine harvester according to claims 2 to 4, wherein each motor (25) of a plurality of lifting, harvesting, and conveying units (H) is driven by a battery (30) which is a secondary battery, and the left lifting, harvesting, and conveying unit (HL) having a transfer conveying device (21) is configured to be switchably driven by the battery (30) and the engine (24).

6. The combine harvester according to claims 2 to 4, wherein each part of the combine harvester, excluding the harvesting device (4), is driven by an engine (24) mounted on the machine frame (1), and the engine (24) has an output configuration of 25 horsepower.

7. A combine harvester according to claims 2 to 4, having a plurality of lifting, harvesting, and conveying units (H), wherein the motor (25) on the right side is stopped when the remaining charge of the battery (30) of the right lifting, harvesting, and conveying unit (HR) decreases.

8. A combine harvester according to claims 2 to 4, wherein when the battery charge of each motor (25) of a plurality of lifting, harvesting, and conveying units (H) decreases, the operation is stopped, and the left lifting, harvesting, and conveying unit (HL) having a transfer conveying device (21) is configured to be drivable by the driving force of the engine (24).

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