Combine harvester

Abstract

Conventionally, there is a combine harvester provided with a fuel tank that penetrates a right side plate of a threshing device and is long in a left-right direction of a machine body. To increase the capacity of a fuel tank by forming the fuel tank long in the lateral direction of a machine body through the right side plate of a thresher in a conventional combine harvester. However, since the fuel tank is located in front of the rear end of the vehicle body, there is a problem in ease of fuel supply. In view of the above, the present invention provides a combine harvester equipped with a fuel tank having a large fuel tank capacity and facilitating fuel supply.SOLUTION: In a combine harvester in which a reaping device is provided in front of a chassis 2 provided with a traveling device 4 on the lower side and a threshing device 6 is provided on the chassis 2, a fuel tank 25 is arranged below the threshing device 6 on the rear part of the chassis 2, a right part 2a of the fuel tank 25 is extended to the outside of the right side plate 6R of the threshing device 6, and the right part 2a is projected toward the rear of the chassis 2 to provide an oil feeding port 28 on the upper surface.SELECTED DRAWING: Figure 4

Description

[Technical Field]

[0001] The present invention relates to a combine harvester equipped with a threshing device that threshes grain stalks harvested by a reaping device. [Background technology]

[0002] Conventionally, there is a combine harvester that has a long fuel tank that penetrates the right side panel of the threshing device and runs in the left-right direction of the machine body (see Patent Document 1). [Prior art documents] [Patent documents]

[0003] [Patent Document 1] Japanese Patent Application Publication No. 2022-099499 Summary of the Invention [Problem to be solved by the invention]

[0004] In conventional combine harvesters, the fuel tank is long in the left-right direction of the machine body, penetrating the right side panel of the threshing device, which allows for a large fuel tank capacity. However, the fuel tank is located forward of the rear end of the machine body, which makes it difficult to supply fuel.

[0005] Therefore, the present invention provides a combine harvester equipped with a fuel tank having a large capacity and allowing easy fuel supply. [Means for solving the problem]

[0006] The invention described in claim 1 is a combine harvester having a harvesting device 15 mounted in front of a chassis 2 with a running device 4 mounted on the underside, and a threshing device 6 mounted on the chassis 2, in which a fuel tank 25 is arranged below the threshing device 6 at the rear of the chassis 2, and the right part 25a of the fuel tank 25 extends to the right outside of the right side plate 6R of the threshing device 6, and the right part 25a protrudes toward the rear of the chassis 2 with a fuel filler port 28 provided on its upper surface.

[0007] According to the invention described in claim 1, a fuel tank 25 is arranged below the threshing device 6 at the rear of the chassis 2, and the right part 25a of the fuel tank 25 extends to the right outside of the right side plate 6R of the threshing device 6, and the right part 25a protrudes toward the rear of the chassis 2, thereby obtaining a large-capacity tank that is long in the left-right direction of the body.

[0008] Furthermore, since a fuel filler port 28 is provided on the upper surface of the right portion 25a that projects toward the rear of the chassis 2, fuel can be easily supplied from the rear of the machine body, providing good workability.

[0009] The invention described in claim 2 is a combine described in claim 1 in which a grain tank 7 is provided on the right side of the threshing device 6, an auger lower member 8b at the base of the threshing auger 8 that discharges grain is provided behind the grain tank 7, the right part 25a of the fuel tank 25 extends below the grain tank 7, and the rear end of the right part 25a is positioned forward of the rear end of the auger lower member 8b.

[0010] According to the invention as set forth in claim 2, the right portion 25a of the fuel tank 25 extends below the fuel tank 7, so that a large-capacity tank can be obtained.

[0011] Furthermore, since the rear end of right section 25a of fuel tank 25 is positioned forward of the rear end of auger lower member 8b, the length of the vehicle from front to rear can be shortened, resulting in a more compact vehicle size. Furthermore, even if the rear of the vehicle comes into contact with a wall or other object, auger lower member 8b functions as an interference protection member to prevent damage to fuel tank 25 and improve safety.

[0012] The invention described in claim 3 is a combine described in claim 1 in which the rear of the left and right frames 2L, 2R of the chassis 2 are connected by a rear frame 2B, and a fuel tank 25 is placed from above in the space between the left and right frames 2L, 2R and the rear frame 2B and fixed to the chassis 2 by a fixing member 26.

[0013] According to the invention as set forth in claim 3, the fuel tank 25 can be easily attached and detached from the rear of the machine body to the rear of the chassis 2, improving the efficiency of maintenance work such as inspection and servicing.

[0014] The invention described in claim 4 is the combine described in claim 1, in which a fuel gauge 29 is provided on the right part 25a of the fuel tank 25 that extends outward to the right of the right side plate 6R of the threshing device 6.

[0015] According to the invention as set forth in claim 4, the harness routing of the fuel gauge 29 can be simplified, and the ease of maintenance is improved.

[0016] The invention described in claim 5 is a combine described in claim 1 in which the fuel supply port 28 is positioned between the threshing device 6 and the auger lower member 8b of the threshing auger 8 when viewed from the rear, and is located at a lower position than the swinging shaft 36a of the swinging sorting shelf 36 of the threshing device 6.

[0017] The invention described in claim 6 is a combine described in claim 1, in which the fuel tank 25 is arranged rearward of the body of the threshing device 6's swinging sorting shelf 36 and the second conveying right outer end member 30.

[0018] The invention described in claim 7 is a combine described in claim 1, in which a fuel suction nozzle 31 that sucks fuel from the fuel tank 25 and sends it to the engine E is located in a position that does not protrude from the front end surface of the fuel tank 25 when viewed in plan in front of the downward bulge portion 25b of the fuel tank 25.

[0019] The invention described in claim 8 is a combine described in claim 1, in which a fuel return nozzle 32 that returns fuel returned from the engine E to the fuel tank 25 is provided in front of the fuel tank 25 and above the top surface of the chassis 2. [Brief explanation of the drawings]

[0020] [Figure 1] FIG. 1 is a left side view of a combine harvester according to an embodiment of the present invention. [Figure 2] FIG. 2 is a plan view of the main parts of the combine harvester. [Figure 3] FIG. 2 is a rear view of the main parts of the combine harvester. [Figure 4] FIG. 2 is a perspective view of a main part of the combine harvester. [Figure 5] FIG. 2 is a side view of a main part of the combine harvester. DETAILED DESCRIPTION OF THE INVENTION

[0021] A combine harvester 1 according to one embodiment of the present invention will be described below with reference to the accompanying drawings. To facilitate understanding, the directions are described by referring to the front as the front side, the rear as the rear side, the right side as the right side, and the left side as the left side, as seen from the operator, but the configuration is not limited to these directions.

[0022] As shown in Figure 1, a combine harvester 1 has a traveling device 4 mounted on the lower side of a chassis 2, with a pair of left and right traveling crawlers 3 that travel on the soil surface. On the left and right sides of the chassis 2, a threshing device 6 that threshes and sorts the stalks that are held and transported by a feed chain 5, a grain tank 7 that temporarily stores the grains, and a threshing auger 8 that discharges the grain stored in the grain tank 7 outside the machine are mounted. A straw disposal device 9 is mounted on the rear end of the threshing device 6. The threshing auger 8 raises and lowers by operating an auger lifting cylinder when discharging grain.

[0023] In front of the threshing device 6, a harvesting device 15 is suspended from the front end of the chassis 2 so as to be able to be raised and lowered freely relative to the soil surface by a harvesting lifting cylinder, and the harvesting device 15 has a dividing body 11 that divides unharvested stalks from the front end, a raising section 12 that raises the divided stalks, a cutting blade section 13 that cuts the raised stalks, and a supply adjustment conveying section that rakes in the harvested stalks and adjusts the handling depth during transport and hands it over to the feed chain 5.

[0024] An operating device for controlling the operation of the combine 1 and an operating seat 17 where the operator sits are provided at the upper rear of the reaping device 15, an engine E is mounted below this operating seat 17, the grain tank 7 is positioned at the rear, and a cabin 18 is provided to cover the operating device and operating seat 17, and these traveling devices 4, threshing device 6, reaping device 15, operating device, engine E, cabin 18, etc. are attached to the chassis 2 of the combine.

[0025] The operating device is equipped with various operating tools such as a main speed change lever that is operated forward and backward by the operator seated in the operating seat 17 to operate a speed change actuator that switches between forward and backward travel and stopping and switches the main speed, a left and right traveling actuator that is operated by tilting left and right to operate the left and right side clutches and left and right side brakes of the left and right traveling crawlers 3, 3, allowing left and right steering when traveling straight and turning in various turning modes, a steering lever that is operated forward and backward to operate the reaping lifting cylinder to raise and lower the reaping device 15, a reaping / threshing lever that operates the reaping / threshing clutch actuator to turn the drive of the reaping device 15 and the threshing device 6 on and off, an auger operating lever that moves the threshing auger 8 up and down by operating the auger lifting cylinder and moves it left and right by operating the left and right turning actuator, and an auger drive switch lever that operates the auger drive electromagnetic clutch that turns the drive of the threshing auger 8 on and off, thereby discharging the grain in the grain tank 7 out of the machine.

[0026] A support frame 19 is provided on the upper right side (or upper left side) of the reaping device 15, and work lights 20 made up of LED lights are attached to the support frame 19 to illuminate the front and right side (or the front and left and right sides) of the reaping device 15, improving nighttime visibility. Side mirrors 21 are also attached to the support frame 19.

[0027] As shown in FIGS. 2 to 5, a fuel tank 25 is disposed on the chassis 2 at the rear of the vehicle body, extending in the left-right direction of the vehicle body.

[0028] That is, the rear ends of the left and right frames 2L, 2R of the chassis 2 are connected by the rear frame 2B, and a fuel tank 25 is placed from above in the space between the left and right frames 2L, 2R and the rear frame 2B and fixed to the chassis 2 with fixing bolts using two fixing members 26 made of strip steel.

[0029] Therefore, the fuel tank 25 can be easily attached and detached to the rear end of the chassis 2 from the rear of the machine body, improving the ease of maintenance work such as inspection and servicing.

[0030] The fixing member 26 is wrapped around the fuel tank 25 and fixed at two locations: inside the left and right side plates 6L, 6R of the threshing device 6 and on the right outer side of the right side plate 6R. The cross-sectional shapes of the locations where the fixing member 26 is wrapped around the fuel tank 25 are the same at both locations.

[0031] Therefore, the number of parts can be reduced and assembly can be made easier.

[0032] Furthermore, when manufacturing the combine harvester 1, first the fuel tank 25 is attached and fixed to the chassis 2, and then the threshing device 6 is mounted, which makes assembly easy and improves production efficiency.

[0033] The fuel tank 25 extends from a position below the rear of the threshing device 6 to a position below the grain tank 7, with its right part 25a extending to the right outside of the right side plate 6R of the threshing device 6.

[0034] The right part 25a protrudes rearward from the rear end of the right side plate 6R and rearward from the rear frame 2B of the chassis 2, and is located forward from the rear end of the auger lower member 8b (which constitutes a horizontal spiral tube that discharges grains from the bottom of the grain tank 7 and transports them to the vertical spiral tube 8a) that rotatably supports the vertical spiral tube 8a of the grain discharge auger 8, and is located at a lower position than the swinging shaft 36a of the swinging sorting shelf 36 of the threshing device 6.

[0035] In addition, the bottom surface of the fuel tank 25 bulges downward to form a downward bulge portion 25b, which is fitted into the space formed by the left and right frames 2L, 2R and the rear frame 2B of the chassis 2.

[0036] Therefore, the right part 25a of the fuel tank 25 is long from side to side, extending further to the right and outward than the right side plate 6R of the threshing device 6 and reaching a position below the grain tank 7, and protrudes rearward from the rear end of the right side plate 6R and rearward from the rear frame 2B of the chassis 2, and further has a downward bulge part 25b, so that a large-capacity tank can be obtained.

[0037] In addition, since the right part 25a of the fuel tank 25 protruding rearward of the machine body is positioned forward of the rear end of the auger lower member 8b of the grain discharge auger 8, the length of the machine body from front to rear can be shortened, making the machine body size more compact. Also, even if the rear part of the machine body comes into contact with a wall or other object, the auger lower member 8b functions as an interference protection member, preventing damage to the fuel tank 25 and improving safety.

[0038] A lidded fuel filler port 28 is provided on the upper surface of the right part 25a, which extends further right and outward than the right side plate 6R and protrudes rearward, and a fuel gauge 29 is provided right and outward than the right side plate 6R of the threshing device 6 and rearward of the machine body from the swinging shaft 36a of the swinging sorting shelf 36.

[0039] In addition, the fuel supply port 28 is arranged between the threshing device 6 and the vertical spiral tube 8a and auger lower member 8b of the grain discharge auger 8 when viewed from behind, and is provided at a position lower than the swinging shaft 36a of the swinging sorting shelf 36.

[0040] Therefore, a fuel supply port 28 is provided on the upper surface of the right part 25a protruding rearward of the machine body, and the fuel supply port 28 is provided at a position lower than the swinging shaft 36a of the swinging sorting shelf 36, so that fuel can be easily supplied from the rear of the machine body, making the work easier.

[0041] In addition, the fuel gauge 29 is provided on the right side of the right side plate 6R of the threshing device 6 and rearward of the swinging shaft 36a of the swinging sorting shelf 36, which simplifies the harness routing for the fuel gauge 29 and improves maintainability.

[0042] The fuel tank 25 is disposed on the rear side of the machine body relative to the second conveying right outer end member 30 of the threshing device 6 (the portion provided on the outside of the right side plate 6R of the second helix).

[0043] Therefore, since the fuel tank 25 is positioned further rearward on the machine body than the second conveying right outer end member 30 of the threshing device 6, the assembly work of mounting the threshing device 6 after attaching and fixing the fuel tank 25 to the chassis 2 is easy and production efficiency is good.

[0044] The fuel suction nozzle 31, which sucks out fuel from the fuel tank 25 and sends it to the engine E, is provided in front of the downward bulge 25b of the fuel tank 25, and is located in a position that does not protrude beyond the front end surface of the fuel tank 25 in a plan view.

[0045] Therefore, since the suction nozzle 31 is provided in the downward bulging portion 25b of the fuel tank 25, it is possible to prevent air from being mixed into the fuel.

[0046] Furthermore, since the suction nozzle 31 is provided at a position that does not protrude from the front end face of the fuel tank 25 in a plan view, it is possible to avoid the suction nozzle 31 interfering with and damaging surrounding members when the fuel tank 25 is mounted on the chassis 2.

[0047] A fuel return nozzle 32 for returning fuel from the engine E into the fuel tank 25 is provided in front of the fuel tank 25 and positioned above the upper surface of the chassis 2.

[0048] Therefore, since the return nozzle 32 is provided in front of the fuel tank 25 and above the upper surface of the chassis 2, the return fuel hose 33 can be shortened, and the high-temperature fuel returning from the engine E returns to a position above and away from the suction position where the suction nozzle 31 is located, thereby preventing the suction nozzle 31 from suctioning the high-temperature fuel. [Explanation of symbols]

[0049] 2 chassis 2B rear frame 2L, 2R left and right frames 4 Running gear 6. Threshing equipment 6R right side plate 7. Glentank 8 Grazing Auger 8b Ogarois member 15 Reaping device 25 fuel tank 25a Right side 25b Lower bulge 26 Fixing member 28 Fuel filler 29 Fuel Gauge 30 No. 2 conveying right outer end member 31 Suction nozzle 32 Return nozzle 36 Swinging sorting shelf 36a Swing axis E-Engine

Claims

1. A combine harvester having a reaping device (15) provided in front of a chassis (2) having a running device (4) provided on the underside thereof and a threshing device (6) provided on the chassis (2), characterized in that a fuel tank (25) is disposed below the threshing device (6) at the rear of the chassis (2), the right part (25a) of the fuel tank (25) extends outward to the right of the right side plate (6R) of the threshing device (6), the right part (25a) protrudes toward the rear of the chassis (2) and a fuel filler port (28) is provided on the upper surface thereof.

2. A combine harvester as described in claim 1, characterized in that a grain tank (7) is provided on the right side of the threshing device (6), an auger lower member (8b) at the base of a grain discharge auger (8) that discharges grain is provided behind the grain tank (7), the right part (25a) of the fuel tank (25) extends below the grain tank (7), and the rear end of the right part (25a) is positioned forward of the rear end of the auger lower member (8b).

3. The combine harvester according to claim 1, characterized in that the rear portions of the left and right frames (2L, 2R) of the chassis (2) are connected by a rear frame (2B), and a fuel tank (25) is placed from above in the space between the left and right frames (2L, 2R) and the rear frame (2B) and fixed to the chassis (2) with a fixing member (26).

4. 2. A combine harvester according to claim 1, characterized in that a fuel gauge (29) is provided on the right part (25a) of a fuel tank (25) extending rightward and outward beyond the right side plate (6R) of the threshing device (6).

5. A combine harvester as described in claim 1, characterized in that the fuel supply port (28) is arranged between the threshing device (6) and the auger lower member (8b) of the threshing auger (8) when viewed from behind, and is provided at a position lower than the swinging shaft (36a) of the swinging sorting shelf (36) of the threshing device (6).

6. A combine harvester as described in claim 1, characterized in that the fuel tank (25) is arranged rearward of the body of the threshing device (6)'s swing shaft (36a) of the swinging sorting shelf (36) and the second conveying right outer end member (30).

7. 2. The combine harvester according to claim 1, wherein a fuel suction nozzle (31) for sucking fuel from the fuel tank (25) and sending it to the engine (E) is provided at a position in front of the downward bulge portion (25b) of the fuel tank (25) so as not to protrude beyond the front end surface of the fuel tank (25) in a plan view.

8. 2. The combine harvester according to claim 1, wherein a fuel return nozzle (32) for returning fuel from the engine (E) to the fuel tank (25) is provided in front of the fuel tank (25) and above the upper surface of the chassis (2).

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