harvester

Abstract

To provide a harvester capable of improving the longitudinal balance of a machine body and performing proper traveling and harvesting work for solving the problems of the conventional combine harvesters mounted with a battery and an electric motor in addition to an engine as a power source in which since heavy objects such as a reaper, an engine and a battery are disposed on the front side of the machine body, the longitudinal balance of the machine body is poor, and it is difficult to perform appropriate traveling and harvesting work.SOLUTION: Provided is a harvesting machine including: a reaping and conveying part 7 in a front part of a traveling undercarriage 1 provided with crawler traveling devices 2L, 2R; and a thresher 6 and a grain tank 5 on the traveling undercarriage 1, wherein traveling actuators 13L, 13R and a battery 12 are installed in a rear part of the machine body, drive rotors 24L, 24R which receive driving force from run actuators 13L, 13R are installed in a body rear side of the crawler traveling devices 2L, 2R, and the ranging behavior rotating bodies 29L, 29R are installed on a body front side of the crawler units 2L, 2R.SELECTED DRAWING: Figure 1

Description

[Technical Field]

[0001] The present invention relates to a harvesting machine such as a combine harvester. [Background technology]

[0002] Conventionally, there is a combine harvester that is equipped with a battery and an electric motor in addition to an engine as a power source (see Patent Document 1). [Prior art documents] [Patent documents]

[0003] [Patent Document 1] Japanese Patent Application Laid-Open No. 2011-005905 Summary of the Invention [Problem to be solved by the invention]

[0004] Because the heavy parts such as the harvesting device, engine, and battery are located at the front of the machine, the machine is unbalanced from front to back, making it difficult to drive and harvest properly.

[0005] An object of the present invention is to provide a harvester that improves the fore-aft balance of the machine body and enables proper travel and harvesting operations. [Means for solving the problem]

[0006] The first aspect of the present invention is A harvester having a reaping and conveying section (7) at the front of a traveling chassis (1) equipped with crawler traveling devices (2L, 2R), and a threshing section (6) and a grain tank (5) on the traveling chassis (1), the harvester has traveling actuators (13L, 13R) and a battery (12) at the rear of the machine body, drive rotors (24L, 24R) that receive driving force from the traveling actuators (13L, 13R) at the rear of the machine body of the crawler traveling devices (2L, 2R), and free-floating rotors (29L, 29R) at the front of the machine body of the crawler traveling devices (2L, 2R), This harvester is characterized in that a traveling transmission case (15L, 15R) that transmits power from the traveling actuator (13L, 13R) to the crawler traveling device (2L, 2R) is arranged in a horizontal position on the traveling chassis (1), a battery (12) is arranged between the left and right sides of the threshing section (6) and the grain tank (5), and a winnower (9) is provided on the machine body forward of the front end of the battery (12). According to the first aspect of the present invention, the travel transmission cases 15L, 15R do not interfere with the threshing section 6, the grain tank 5, etc., making it easier to ensure maintenance space and allowing compact placement at the rear of the travel chassis 1. The second aspect of the present invention is A harvester having a reaping and conveying section (7) at the front of a traveling chassis (1) equipped with crawler traveling devices (2L, 2R), and a threshing section (6) and a grain tank (5) on the traveling chassis (1), the harvester has traveling actuators (13L, 13R) and a battery (12) at the rear of the machine body, drive rotors (24L, 24R) that receive driving force from the traveling actuators (13L, 13R) at the rear of the machine body of the crawler traveling devices (2L, 2R), and free-floating rotors (29L, 29R) at the front of the machine body of the crawler traveling devices (2L, 2R), This harvester is characterized in that a traveling transmission case (15L, 15R) that transmits power from the traveling actuator (13L, 13R) to the crawler traveling device (2L, 2R) is arranged in a horizontal position on the traveling chassis (1), a battery (12) is arranged on the left and right sides of the body, and a winnower (9) is provided on the body forward of the front end of the battery (12). According to the second aspect of the present invention, the travel transmission cases 15L, 15R do not interfere with the threshing section 6, the grain tank 5, etc., making it easier to ensure maintenance space and allowing compact placement at the rear of the travel chassis 1. The third aspect of the present invention is A harvester having a reaping and conveying section (7) at the front of a traveling chassis (1) equipped with crawler traveling devices (2L, 2R), and a threshing section (6) and a grain tank (5) on the traveling chassis (1), the harvester has traveling actuators (13L, 13R) and a battery (12) at the rear of the machine body, drive rotors (24L, 24R) that receive driving force from the traveling actuators (13L, 13R) at the rear of the machine body of the crawler traveling devices (2L, 2R), and free-floating rotors (29L, 29R) at the front of the machine body of the crawler traveling devices (2L, 2R), This harvester is characterized by having a work actuator (14) and a work transmission case (45) provided behind the threshing section (6), and a transmission mechanism for driving the reaping and conveying section (7) and the threshing section (6) provided in front of the threshing section (6). According to the third aspect of the present invention, the number of parts can be reduced, and the threshing section 6 and the reaping and conveying section 7 can be operated at the same speed, thereby improving threshing accuracy. First invention related to the present invention is a harvester having a reaping and conveying section 7 at the front of a running chassis 1 equipped with crawler running devices 2L, 2R, and a threshing section 6 and a grain tank 5 on the running chassis 1, and having running actuators 13L, 13R and a battery 12 at the rear of the machine body, driving rotors 24L, 24R that receive driving force from the running actuators 13L, 13R at the rear of the machine body of the crawler running devices 2L, 2R, and floating rotors 29L, 29R at the front of the machine body of the crawler running devices 2L, 2R.

[0007] First invention related to the present invention According to the above, traveling actuators 13L, 13R and a battery 12 are provided at the rear of the machine body, driving rotors 24L, 24R that receive driving force from the traveling actuators 13L, 13R are provided at the rear of the machine body of the crawler traveling devices 2L, 2R, and floating rotors 29L, 29R are provided at the front of the machine body of the crawler traveling devices 2L, 2R.This eliminates the front balance caused by the harvesting and conveying unit 7 provided at the front of the traveling chassis 1, improves the front-to-rear balance of the machine body, reduces mud push by the left and right crawler traveling devices 2L, 2R, and improves traveling performance in wet fields.

[0008] Second invention related to the present invention The travel transmission cases 15L, 15R that transmit power from the travel actuators 13L, 13R to the crawler travel devices 2L, 2R are arranged horizontally on the travel chassis 1, the battery 12 is arranged between the left and right sides of the threshing unit 6 and the grain tank 5, and the winnower 9 is provided on the front side of the machine body from the front end of the battery 12. First invention related to the present invention It is a harvesting machine.

[0009] According to the second invention related to the present invention, the first invention related to the present invention In addition to the effect of this, the traveling transmission cases 15L, 15R that transmit power from the traveling actuators 13L, 13R to the crawler traveling devices 2L, 2R are arranged in a horizontal position on the traveling chassis 1, so that the traveling transmission cases 15L, 15R do not interfere with the threshing section 6, grain tank 5, etc., making it easier to secure maintenance space and allowing them to be arranged compactly at the rear of the traveling chassis 1.

[0010] In addition, since the battery 12 is positioned between the left and right sides of the threshing section 6 and the grain tank 5, the weight balance is shifted to the rear of the machine body without causing any imbalance in the weight balance in the left-right direction, thereby stabilizing the working posture.

[0011] In addition, since the winnower 9 is provided further forward on the machine body than the front end of the battery 12, part of the transport air generated rearward can be directed at the battery 12 and used for cooling, preventing overheating of the battery 12 and extending the operating time and life of the battery 12.

[0012] Third invention related to the present invention The travel transmission cases 15L, 15R that transmit power from the travel actuators 13L, 13R to the crawler travel devices 2L, 2R are arranged horizontally on the travel chassis 1, the battery 12 is arranged in the left and right directions of the machine body, and a winnower 9 is provided on the machine body front side from the front end of the battery 12. First invention related to the present invention It is a harvesting machine.

[0013] According to the third invention related to the present invention, the first invention related to the present invention In addition to the effect of the above, the traveling transmission cases 15L, 15R that transmit power from the traveling actuators 13L, 13R to the crawler traveling devices 2L, 2R are arranged in a horizontal position on the traveling chassis 1, and the battery 12 is arranged on the left and right sides of the body, so that the traveling transmission cases 15L, 15R do not interfere with the threshing section 6, grain tank 5, etc., making it easier to secure maintenance space and allowing them to be arranged compactly at the rear of the traveling chassis 1.

[0014] In addition, since the winnower 9 is provided further forward on the machine body than the front end of the battery 12, part of the transport air generated rearward can be directed at the battery 12 and used for cooling, preventing overheating of the battery 12 and extending the operating time and life of the battery 12.

[0015] The fourth invention related to the present invention The work actuator 14 and the work transmission case 45 are provided on the rear side of the threshing unit 6, and a transmission mechanism for driving the reaping and conveying unit 7 and the threshing unit 6 is provided on the front side of the threshing unit 6. First invention related to the present invention It is a harvesting machine.

[0016] According to the fourth invention related to the present invention, the first invention related to the present inventionIn addition to the effect of this, an operation actuator 14 and an operation transmission case 45 are provided behind the threshing unit 6, and a transmission mechanism for driving the reaping and conveying unit 7 and the threshing unit 6 is provided in front of the threshing unit 6, thereby reducing the number of parts and allowing the threshing unit 6 and the reaping and conveying unit 7 to operate at the same speed, thereby improving threshing accuracy.

[0017] Fifth Invention Related to the Present Invention The battery 12 is housed in a cylindrical battery case 12a and is detachably attached to the vehicle body. The battery case 12a is made of a material with high thermal conductivity and has slits. Any of the first to fourth inventions related to the present invention It is a harvesting machine.

[0018] According to a fifth aspect of the present invention, any one of the first to fourth aspects of the present invention is In addition to the effect of the above, the battery 12 is housed in a cylindrical battery case 12a and is detachably attached to the vehicle body, which prevents excessive heat generation due to contact with straw, earth, sand, and other impurities from coming into contact with the battery 12, and prevents impurities from coming into contact with the terminals and interfering with current flow, thereby extending the life of the battery 12. Furthermore, the battery 12 can be detached from the vehicle body together with the battery case 12a, which improves the efficiency of replacement work.

[0019] Furthermore, since the battery case 12a is made of a material with high thermal conductivity, the battery 12 can be cooled efficiently, preventing overheating that would cause power to stop and interrupt work, and preventing a decrease in work efficiency.

[0020] Furthermore, since the battery case 12a is provided with slits, the battery 12 can be cooled efficiently while preventing the entry of foreign matter.

[0021] The sixth invention related to the present invention The control unit 3 on which the operator sits is provided on either the left or right side at the front of the running chassis 1, and a control board 61 is provided inside an extension 60a provided inside the body of the vehicle of the front cover 60 of the control unit 3. Any of the first to fourth inventions related to the present invention It is a harvesting machine.

[0022] According to a sixth aspect of the present invention, any one of the first to fourth aspects of the present invention isIn addition to the effect of the above, the control section 3 on which the operator sits is provided on either the left or right side at the front of the running chassis 1, and the control board 61 is provided inside the extension section 60a provided inside the fuselage of the front cover 60 of the control section 3, so that the front-to-rear width of the front cover 60 can be narrowed and the operating space for the operator seated in the seat can be widened. [Brief explanation of the drawings]

[0023] [Figure 1] 1 is a side view of a general-purpose combine harvester according to an embodiment of the present invention. [Figure 2] FIG. [Figure 3] 2 is a schematic diagram of a drive transmission unit using left and right traveling electric motors of the same general-purpose combine. FIG. [Figure 4] FIG. 2 is a front view for explaining the grain tank of the general-purpose combine harvester. [Figure 5] FIG. 10 is a schematic plan view illustrating another example of battery placement in the general-purpose combine harvester. [Figure 6] FIG. 2 is a side view showing another example of the same general-purpose combine harvester. [Figure 7] FIG. 2 is a side view showing another example of the same general-purpose combine harvester. [Figure 8] FIG. 2 is a schematic perspective view showing another example of the general-purpose control unit. [Figure 9] FIG. 10 is a schematic plan view showing another example of the steering section of the general-purpose combine harvester. [Figure 10] FIG. 10 is a schematic front view showing another example of the steering section of the general-purpose combine harvester. DETAILED DESCRIPTION OF THE INVENTION

[0024] A general-purpose combine harvester, which is one embodiment of the harvester of the present invention, will be described below with reference to the accompanying drawings. For ease of understanding, the forward direction will be described as the front side, the rear side as the rear side, the right side as the right side, and the left side as the left side, as viewed from the operator, for convenience, but the configuration is not limited to these.

[0025] As shown in Figures 1 to 3, the general-purpose combine has left and right crawler running devices 2L, 2R arranged below the running chassis 1, and a control unit 3 with a seat arranged at the front right side of the running chassis 1, an engine 4 arranged below and behind the control unit 3, and a grain tank 5 for storing grain arranged behind the engine 4.

[0026] A threshing unit 6 is mounted on the left side of the running chassis 1, a reaping and conveying unit 7 is provided at the front of the running chassis 1 so that it can be raised and lowered, and a rice bran disposal device 8 is provided behind the threshing unit 6 and the grain tank 5.

[0027] The engine 4 is, for example, a gasoline engine, which drives a generator. The electricity generated by the generator is stored in a battery 12 and supplied to left and right electric travel motors 13L, 13R as travel actuators, a work electric motor 14 as a work actuator, etc.

[0028] The left and right traveling electric motors 13L, 13R drive the left and right crawler traveling devices 2L, 2R via left and right traveling transmission cases 15L, 15R, respectively.

[0029] The left and right traveling electric motors 13L, 13R and the left and right traveling transmission cases 15L, 15R are provided at the rear of the traveling chassis 1, which is the rear of the machine body.

[0030] Reduction gear mechanisms 10L and 10R are provided inside the left and right traveling transmission cases 15L and 15R, respectively, and the driving force of the left and right traveling electric motors 13L and 13R is transmitted via the reduction gear mechanisms 10L and 10R to the left and right axles 23L and 23R and the left and right driving sprockets 24L and 24R as driving rotors to drive the left and right crawler traveling devices 2L and 2R.

[0031] The left and right travel transmission cases 15L, 15R are mounted in a horizontal position on the traveling chassis 1 at a position below the rear of the threshing unit 6, facing in the front-to-rear direction.

[0032] Therefore, by arranging the left and right traveling transmission cases 15L, 15R in a horizontal position, the left and right traveling electric motors 13L, 13R and the left and right traveling transmission cases 15L, 15R do not interfere with the threshing section 6 or the vertical auger 50a of the discharge auger 50, making it easier to secure maintenance space and allowing them to be arranged compactly at the rear of the traveling chassis 1.

[0033] The left and right traveling electric motors 13L and 13R are provided with left and right motor drive devices 11L and 11R, respectively.

[0034] The battery 12 is housed in a cylindrical battery case 12a, and is provided laterally at the rear of the chassis 1, which is the rear of the vehicle body, and can be attached and detached while still housed in the battery case 12a.

[0035] The battery 12 is cooled by receiving the winnowing wind from the winnower 9 of the threshing section 6 provided in front of the battery 12 through the air guide duct 9a.

[0036] The battery case 12a is made of a material with high thermal conductivity, and has slits formed in the portions through which cooling air can enter.

[0037] Therefore, by storing the battery 12 in a cylindrical battery case 12a, it is possible to prevent impurities such as straw chips and earth and sand from coming into contact with the battery 12 and causing excessive heat generation, or impurities from coming into contact with the terminals and interfering with current flow, thereby extending the life of the battery 12.

[0038] Furthermore, by making the battery case 12a highly heat conductive, the battery 12 can be cooled by blowing cooling air or the like onto it, so that the power supply is not stopped due to overheating, and work is not interrupted, preventing a decrease in work efficiency.

[0039] Furthermore, by forming a slit in the portion of the battery case 12a where the cooling air enters, the battery 12 can be efficiently cooled by the cooling air while blocking the entry of foreign matter, thereby preventing interruptions to work due to overheating.

[0040] The left and right crawler traveling devices 2L, 2R are configured by supporting left and right drive sprockets 24L, 24R provided on the rear side of the left and right crawler traveling frames 26L, 26R, left and right floating sprockets 29L, 29R as floating rotating bodies provided on the front side, and multiple lower left and right rollers 30L, 30R, around which left and right crawlers 31L, 31R are wound.

[0041] Therefore, by installing the left and right traveling electric motors 13L, 13R, the left and right traveling transmission cases 15L, 15R, and the battery 12 at the rear of the running chassis 1, which is the rear of the machine body, the front balance caused by the freely raising and lowering harvesting and conveying unit 7 installed at the front of the running chassis 1 is eliminated, the front and rear balance of the machine body is improved, the mud push by the left and right crawler running devices 2L, 2R is alleviated, and traveling performance in wet fields is improved.

[0042] Furthermore, the left and right traveling electric motors 13L, 13R, the left and right traveling transmission cases 15L, 15R, and the battery 12 can be arranged without obstructing the space behind the swing shelf of the threshing section 6.

[0043] When replacing the battery 12, the battery 12 can be attached and detached to the rear of the aircraft while still housed in the battery case 12a, making the replacement work easy and less time-consuming.

[0044] As shown in FIG. 4, a paddy sensor 40 is provided at the center of the grain tank 5 from top to bottom, and detects when the grain tank 5 is filled with about half of the grains.

[0045] Since the grain tank 5 is located on the right side of the machine body, if the grain tank 5 is filled with more than half of grain, the center of gravity will shift significantly to the right side of the machine body, making it difficult for the machine body to turn left properly.

[0046] Therefore, when the control device detects that more than half of the grains have accumulated in the grain tank 5 while the left and right electric motors 13L, 13R are rotating forward to travel forward, the control device operates the steering lever on the control unit 3 to turn left, and then slowly reverses the left electric motor 13L to slowly reverse the left crawler traveling device 2L, assisting the left turn, preventing slippage and damage to the field, and enabling appropriate left turns.

[0047] The working electric motor 14 is equipped with a motor drive device and is provided at the rear side of the threshing section 6.

[0048] The work electric motor 14 then drives the threshing drum shaft 46a of the threshing drum 46 to rotate from the rear via a transmission mechanism in the work transmission case 45.

[0049] The front part of the threshing body shaft 46a drives other members such as the winnower 9 of the threshing section 6 via a transmission mechanism, and also drives the reaping and conveying section 7.

[0050] Therefore, the working electric motor 14 and working transmission case 45 that drive the threshing section 6 and the reaping and conveying section 7 are provided at the rear of the threshing section 6, which is the rear of the machine body.In addition to the configuration in which the left and right running electric motors 13L, 13R, the left and right running transmission cases 15L, 15R and the battery 12 are provided at the rear of the running chassis 1, which is the rear of the machine body, as described above, the front balance of the freely raising and lowering reaping and conveying section 7 provided at the front side of the running chassis 1 is eliminated, improving the front-to-rear balance of the machine body, reducing mud push by the left and right crawler running devices 2L, 2R and improving running performance in wet fields.

[0051] In addition, by driving the threshing unit 6 and the reaping and conveying unit 7 with the working electric motor 14, the number of parts can be reduced and the threshing unit 6 and the reaping and conveying unit 7 can be operated at the same speed, thereby improving threshing accuracy.

[0052] The battery 12 may be provided at the left end of the rear of the chassis 1, which is the rear of the vehicle body.

[0053] FIG. 5 shows an example in which the battery 12 is arranged between the right frame of the threshing section 6 at the rear of the machine body and the vertical auger 50a of the discharge auger 50 that discharges grain from the grain tank 5 to the outside of the machine.

[0054] By placing the battery 12 between the left and right sides of the threshing section 6 and the vertical auger 50a of the discharge auger 50, the weight balance is shifted to the rear of the machine body without causing any imbalance in the weight balance in the left-right direction, thereby stabilizing the working posture.

[0055] Furthermore, if a partition is provided between the threshing unit 6 and the battery 12 to completely separate them, it would be even better to prevent straw chips and the like from entering the battery 12.

[0056] In addition, the battery 12 is configured to be cooled by receiving the winnowing wind from the winnower 9 of the threshing section 6 located in front of it through the air guide duct 9a, so as in the above embodiment, overheating of the battery 12 is prevented, the operating time and lifespan of the battery 12 are extended, and work stoppages are reduced.

[0057] FIG. 6 shows an example in which the battery 12 and the left and right travel transmission cases 15L, 15R are provided in the longitudinal direction (vertically) at the rear of the vehicle body.

[0058] FIG. 7 shows an example in which the left and right traveling electric motors 13L, 13R, the left and right traveling transmission cases 15L, 15R, and the left and right driving sprockets 24L, 24R are arranged horizontally on the inner periphery of the rear of the left and right crawler traveling devices 2L, 2R.

[0059] The left and right traveling electric motors 13L, 13R and the left and right traveling transmission cases 15L, 15R may be disposed at the rear of the machine body, and the battery 12 may be provided on the traveling chassis 1 in front of the threshing section 6 in the left and right directions.

[0060] In summary, by electrifying the left and right crawler traveling devices 2L and 2R using the left and right traveling electric motors 13L and 13R, and driving the working parts such as the threshing unit 6 and the reaping and conveying unit 7 using the working electric motor 14, it is possible to reduce fuel consumption and exhaust gas emissions, thereby improving the environment.

[0061] In addition, the reduction in vibration and noise due to electrification helps reduce fatigue during long hours of work.

[0062] Furthermore, the left and right crawler traveling devices 2L, 2R are driven by the left and right traveling electric motors 13L, 13R, which facilitates speed control, forward / reverse rotation control, and stop control.

[0063] Furthermore, by using electric motors, the number of transmission gears, hydraulic parts, and hydraulic hoses can be reduced, making assembly easier and reducing costs.

[0064] Furthermore, the left and right running electric motors 13L, 13R, the left and right running transmission cases 15L, 15R, the work electric motor 14 that drives the threshing section 6 and the reaping and conveying section 7, the work transmission case 45, and the battery 12 are located at the rear of the running chassis 1, which is the rear of the machine body.This eliminates the front balance of the reaping and conveying section 7, which can be raised and lowered and is located at the front of the running chassis 1, improving the front-to-rear balance of the machine body, reducing mud push by the left and right crawler running devices 2L, 2R, and improving running performance in wet fields.

[0065] <Other embodiments> 8 to 10, the detailed configuration of the control unit 3 of the harvester in which the engine 4 drives the left and right crawler traveling devices 2L, 2R, the threshing unit 6, the reaping and transport unit 7, and other working units will be described.

[0066] The front cover 60 of the control unit 3 is extended to the center of the aircraft body toward the left side of the aircraft body, and a control board 61 for the control device is provided within the extended portion 60a.

[0067] The control board 61 of the control device is provided in an extension 60a formed by extending the front cover 60 of the control section 3 to the center of the machine body toward the left side of the machine body, so that the foot space 62 of the operator seated in the seat can be increased (the control space can be increased), and the front-to-rear width of the front cover 60 can be narrowed, which allows for weight reduction and improved front-to-rear balance, thereby stabilizing the machine body attitude, improving fuel efficiency, and improving driving performance in wet fields.

[0068] A front panel (main monitor) 63 is provided on the upper surface of the central part of the front cover 60, and a sub-monitor 64 that displays the status of the DPF and information on the SCR is provided on the upper surface of the extension part 60a.

[0069] Further, left and right work lights 65 for illuminating the reaping and conveying section 7 are provided on the front right side of the front cover 60 and the front left side of the extension section 60a.

[0070] Therefore, left and right work lights 65 that illuminate the reaping and conveying section 7 are provided on the front right end of the front cover 60 and the front left end of the extension section 60a, so that the operator at the control section 3 can easily adjust the angle of the left and right work lights 65, and by providing the left and right work lights 65 on the sturdy front cover 60, damage to the light bulbs of the left and right work lights 65 due to vibration can be prevented.

[0071] A removable cover 66 is provided on the rear surface of the front cover 60, including the extension portion 60a, to protect the control board 61 of the control device, the front panel (main monitor) 63, the sub-monitor 64, the support portion of the steering lever 67, etc.

[0072] A side cover 68 is provided from the extension 60a of the front cover 60 toward the rear of the vehicle body.

[0073] On the upper surface of the side cover 68, a main speed change lever (HST lever) 69, an auxiliary speed change lever 70, a side monitor 71, and the like are provided.

[0074] The main speed change lever (HST lever) 69 is operated back and forth along a crank-shaped guide groove 90, and is neutral when operated to the crank portion 90a at the center of the guide groove 90, and the forward speed increases as the lever is operated forward from the crank portion 90a to the front front groove 90b, and the reverse speed increases as the lever is operated backward from the crank portion 90a to the rear rear groove 90c.

[0075] The sub-speed change lever 70 is operated back and forth along a linear guide groove 91 to change the speed between a high travel speed and a low working speed.

[0076] The guide groove 91 of the auxiliary speed change lever 70 is provided on the side of and in parallel with the front groove 90b of the guide groove 90 of the main speed change lever (HST lever) 69.

[0077] In addition, the sub-transmission lever 70 is bent so as to approach the main transmission lever (HST lever) 69, and the grip portion of the sub-transmission lever 70 is positioned close to the grip portion of the main transmission lever (HST lever) 69.

[0078] Therefore, the guide groove 91 of the sub-transmission lever 70 is arranged parallel to the side of the front groove 90b of the guide groove 90 of the main transmission lever (HST lever) 69, the sub-transmission lever 70 is configured to be bent so as to approach the main transmission lever (HST lever) 69, and the grip portion of the sub-transmission lever 70 is positioned close to the grip portion of the main transmission lever (HST lever) 69, so that the operator can easily grip the main transmission lever (HST lever) 69 and the sub-transmission lever 70, resulting in good operability.

[0079] The side monitor 71 displays the status of the DPF and information on the SCR.

[0080] A handrail 72 is provided, which is made of a stainless steel round pipe whose left end base is fixed to the connecting part between the front cover 60 and the side cover 68, extends along the upper surface and right side surface of the front cover 60, and whose lower right end is fixed to a step frame 74 that forms the right side of the step floor 73.

[0081] Therefore, the handrail 72 serves as a strength member connecting the front cover 60 and the step floor 73, improving rigidity.

[0082] In addition, the left end base of the handrail 72, which is fixed to the connection between the front cover 60 and the side cover 68, is located between the front panel (main monitor) 63 and the sub-monitor 64, and is positioned so as not to obstruct the view of both monitors 63, 64.

[0083] The front panel of the step frame 74 at the lower front of the front cover 60 is enlarged to facilitate separation and detachment, and the built-in battery and oil tank can be detached from the front as well, making maintenance easier.

[0084] An opening 74a is provided on the right side of the step frame 74, and the upper end of a boarding / exiting step 75 is rotatably supported on the lower side of the opening 74a by a pivot shaft 76 in the front-rear direction.

[0085] The boarding / alighting step 75 has a first lower step 75a at the lower end and a second upper step 75b at the pivot shaft 76 at the upper end.

[0086] Therefore, the boarding / alighting step 75 can be rotated around the pivot shaft 76 to be changed between a use state in which it protrudes downward on the right side of the machine body and a storage state in which it is stored in the upper inside of the machine body.

[0087] In addition, when the vehicle is in the usable state with the step 75b projecting downward to the right side of the vehicle, the second upper step 75b is located at the lower edge of the opening 74a on the right side of the step frame 74, so when the operator gets on or off the vehicle, the operator's feet placed on the second upper step 75b will fit inside the opening 74a, making it easy to get on or off the vehicle.

[0088] Furthermore, since an opening 74a is provided on the right side of the step frame 74, the cooling effect of the battery and oil tank arranged inside the step frame 74 is improved.

[0089] An ECU 78 and a radiator reserve tank 79 are provided at the upper rear position inside an engine cover 77 that is provided on the right rear side of the control unit 3 and can be opened and closed with a knob bolt, and maintenance can be easily performed by opening the engine cover 77.

[0090] The base of an air cleaner stay 81 is fixed to and integrated with a seat support frame 80 at the rear of the control unit 3, and an air cleaner 82 is provided on the upper part of the air cleaner stay 81.

[0091] Therefore, since the air cleaner 82 is provided on the air cleaner stay 81 integrated with the seat support frame 80, weight reduction is achieved and the position of the air cleaner 82 can be stably supported.

[0092] The configuration of the control unit 3 may be applied to the electric general-purpose combine shown in FIGS. [Explanation of symbols]

[0093] 1 Running chassis 2L, 2R crawler travel device 3 Control Unit 5. Glentank 6. Threshing Department 7. Harvesting and transport section 9 Karawinoo 12 Battery 12a battery case 13L, 13R Travel actuator (left and right travel electric motor) 14 Work actuator (work electric motor) 15L, 15R Travel transmission case 24L, 24R drive rotor (left and right drive sprockets) 29L, 29R floating rotor (left and right floating sprocket) 45 Work transmission case 60 Front cover 60a Extension 61 Control board

Claims

1. A harvesting machine having a reaping and conveying section (7) at the front of a running chassis (1) equipped with crawler running devices (2L, 2R), and a threshing section (6) and a grain tank (5) on the running chassis (1), wherein running actuators (13L, 13R) and a battery (12) are provided at the rear of the machine body, driving rotors (24L, 24R) that receive driving force from the running actuators (13L, 13R) are provided at the rear of the machine body of the crawler running devices (2L, 2R), and floating rotors (29L, 29R) are provided at the front of the machine body of the crawler running devices (2L, 2R), A harvester characterized in that a traveling transmission case (15L, 15R) that transmits power from a traveling actuator (13L, 13R) to a crawler traveling device (2L, 2R) is arranged in a horizontal position on a traveling chassis (1), a battery (12) is arranged between the left and right sides of a threshing section (6) and a grain tank (5), and a winnower (9) is provided on the machine body forward of the front end of the battery (12).

2. A harvester having a reaping and conveying section (7) at the front of a running chassis (1) equipped with crawler running devices (2L, 2R), and a threshing section (6) and a grain tank (5) on the running chassis (1), wherein running actuators (13L, 13R) and a battery (12) are provided at the rear of the machine body, driving rotors (24L, 24R) that receive driving force from the running actuators (13L, 13R) are provided at the rear of the machine body of the crawler running devices (2L, 2R), and floating rotors (29L, 29R) are provided at the front of the machine body of the crawler running devices (2L, 2R), This harvester is characterized in that a traveling transmission case (15L, 15R) that transmits power from traveling actuators (13L, 13R) to crawler traveling devices (2L, 2R) is arranged in a horizontal position on a traveling chassis (1), a battery (12) is arranged in the left-right direction of the machine body, and a winnower (9) is provided on the machine body forward of the front end of the battery (12).

3. A harvesting machine having a reaping and conveying section (7) at the front of a running chassis (1) equipped with crawler running devices (2L, 2R), and a threshing section (6) and a grain tank (5) on the running chassis (1), wherein running actuators (13L, 13R) and a battery (12) are provided at the rear of the machine body, driving rotors (24L, 24R) that receive driving force from the running actuators (13L, 13R) are provided at the rear of the machine body of the crawler running devices (2L, 2R), and floating rotors (29L, 29R) are provided at the front of the machine body of the crawler running devices (2L, 2R), A harvester characterized in that a work actuator (14) and a work transmission case (45) are provided behind the threshing section (6), and a transmission mechanism for driving the reaping and conveying section (7) and the threshing section (6) is provided in front of the threshing section (6).

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