combine

Abstract

To solve a problem that a combine in which an exhaust pipe can be easily provided has been desired.SOLUTION: A combine includes an exhaust pipe 29 passing between a thresher 3 and a grain storage part 4 for exhausting exhaust air of an engine E. An exhaust port 32a is formed in an exhaust downstream side end portion of the exhaust pipe 29. The exhaust pipe 29 extends to an upper side than the thresher 3 in between the thresher 3 and the grain storage part 4 in a further front side than a grain lifting device 19. The exhaust port 32a is located in a further front side than the grain lifting device 19.SELECTED DRAWING: Figure 3

Description

[Technical field]

[0001] The present invention relates to a combine harvester. [Background technology]

[0002] Conventionally, a known combine harvester is the one described in Patent Document 1. The combine harvester described in Patent Document 1 includes a threshing device (referred to as "threshing device [8]" in the document) having a threshing section for threshing harvested stalks and a sorting section arranged below the threshing section for sorting threshed stalks, a grain storage section arranged side by side with the threshing device for storing grains (referred to as "grain tank [9]" in the document), a lifting device (referred to as "lifting device

[10] " in the document) arranged between the threshing device and the grain storage section for lifting and transporting the first grain sorted by the sorting section to the grain storage section, an engine (referred to as "engine [5]" in the document) arranged forward of the threshing device and the grain storage section, and an exhaust pipe (referred to as "exhaust pipe

[14] " in the document) passing between the threshing device and the grain storage section for discharging engine exhaust. [Prior art documents] [Patent documents]

[0003] [Patent Document 1] JP 2019-135970 A Summary of the Invention [Problem to be solved by the invention]

[0004] In the combine harvester described in Patent Document 1, the exhaust pipe passes through a narrow gap between the threshing device and the lifting device, making it difficult to install an exhaust pipe.

[0005] In view of the above circumstances, there is a demand for a combine harvester in which an exhaust pipe can be easily installed. [Means for solving the problem]

[0006] The present invention is characterized by a threshing device having a threshing section for threshing harvested stalks and a sorting section arranged below the threshing section for sorting threshed stalks; a grain storage section arranged side by side with the threshing device for storing grains; and a grain lifting device arranged between the threshing device and the grain storage section for lifting and transporting the first grain sorted by the sorting section toward the grain storage section. The lifting device is located rearward of the center between the front end and the rear end of the threshing device in the front-rear direction of the machine body, The exhaust pipe is provided with an engine arranged forward of the threshing device and the grain storage section, and an exhaust pipe passing between the threshing device and the grain storage section and discharging exhaust gas from the engine, and an exhaust port is formed at an exhaust downstream end of the exhaust pipe, and the exhaust pipe is extended to a position above the threshing device between the threshing device and the grain storage section forward of the lifting device, and the exhaust port is located forward of the lifting device. and is located between the front end of the grain storage section and the lifting device in the machine body front-rear direction and closer to the lifting device. The point is...

[0007] According to this characteristic configuration, the exhaust port is located above the threshing device and in front of the lifting device. This allows the exhaust pipe to be discharged as high as possible and as far back as possible, without passing the exhaust pipe through the narrow gap between the threshing device and the lifting device, so that the exhaust gas discharged from the exhaust port is not affected by the exhaust gas discharged from the exhaust port. In other words, a combine harvester in which an exhaust pipe can be easily installed can be realized. According to this characteristic configuration, the exhaust gas discharged from the exhaust port can be discharged as far rearward as possible from the aircraft body.

[0008] Furthermore, in the present invention, it is preferable that the exhaust port is configured to face the threshing device in the left-right direction of the body.

[0009] According to this characteristic configuration, the exhaust gas discharged from the exhaust port is discharged above the threshing device in the left-right direction of the machine body toward the threshing device. This makes it possible to prevent the exhaust gas discharged from the exhaust port from reaching the grain storage section.

[0010] Furthermore, in the present invention, it is preferable that the exhaust outlet overlaps with the threshing device in a plan view.

[0011] According to this characteristic configuration, the exhaust gas discharged from the exhaust port can be guided by the portion of the exhaust port that overlaps with the threshing device in a planar view so that the exhaust gas flows above the threshing device toward the threshing device.

[0012] Furthermore, in the present invention, it is preferable that the exhaust downstream end of the exhaust pipe is bent in the left-right direction of the body toward the threshing device so that the exhaust outlet is located above the threshing device.

[0013] According to this characteristic configuration, the exhaust outlet can be easily configured to overlap with the threshing device in a plan view by simply bending the downstream end of the exhaust pipe in the left-right direction of the body toward the threshing device so that the exhaust outlet is located above the threshing device.

[0014]

[0015]

[0016] Furthermore, in the present invention, it is preferable that a second reduction device is provided which returns the second grains sorted by the sorting section to the sorting section, the front end of the second reduction device is located forward of the grain lifting device, and the exhaust pipe is configured to pass above the front upper end of the second reduction device.

[0017] According to this characteristic configuration, the exhaust pipe can be suitably arranged by utilizing the space above and in front of the front upper end portion of the second reduction device.

[0018] Furthermore, in the present invention, it is preferable that the exhaust pipe overlaps with a front end portion of the second reduction device in a plan view.

[0019] According to this characteristic configuration, the exhaust pipe can be effectively arranged by utilizing the space above the front end portion of the second reduction device.

[0020] Furthermore, in the present invention, it is preferable that the exhaust pipe overlaps with the grain lifting device when viewed from the front.

[0021] According to this characteristic configuration, the exhaust pipe can be efficiently positioned by utilizing the space in front of the grain lifting device.

[0022] Furthermore, in the present invention, it is preferable that the exhaust pipe is supported by the threshing device.

[0023] Here, the threshing device is made of a highly rigid member. According to this characteristic configuration, by using the threshing device as a member for supporting the exhaust pipe, the exhaust pipe can be firmly supported.

[0024] Furthermore, in the present invention, it is preferable that the machine is provided with an exhaust purification device for purifying the exhaust of the engine, the exhaust purification device being arranged above the engine in front of the threshing device, and the exhaust pipe being extended diagonally rearward from the exhaust purification device so that the rearward side is positioned on the grain storage section side in the left-right direction of the body, and being extended upward to the rear between the threshing device and the grain storage section.

[0025] According to this characteristic configuration, the exhaust purification device can be well positioned by utilizing the space above the engine in front of the threshing device. Here, if the exhaust purification device is positioned above the engine in front of the threshing device, the exhaust purification device will be positioned closer to the threshing device than between the threshing device and the grain storage section. According to this characteristic configuration, even if the exhaust purification device is positioned in this way, the exhaust pipe can be easily passed between the threshing device and the grain storage section by extending the exhaust pipe diagonally backward so that the exhaust pipe is positioned closer to the grain storage section in the left-right direction of the machine body as it is rearward from the exhaust purification device.

[0026] Furthermore, in the present invention, it is preferable that the exhaust pipe has a first pipe section connected to the exhaust downstream end of the tail pipe of the exhaust purification device, and a second pipe section supported by the threshing device and connected to the exhaust downstream end of the first pipe section.

[0027] According to this characteristic configuration, the shape of the exhaust pipe can be easily formed by changing the shape (e.g., bending shape) of the connection part between the first pipe part and the second pipe part. In addition, by using a threshing device as a member for supporting the second pipe part, the second pipe part can be firmly supported. 。

[0028] Furthermore, in the present invention, it is preferable that an exhaust downstream end of the first pipe section is inserted into an exhaust upstream end of the second pipe section with a radial gap therebetween.

[0029] According to this characteristic configuration, an outside air inlet section that introduces outside air into the exhaust pipe is formed between the exhaust downstream end of the first pipe section and the exhaust upstream end of the second pipe section. This allows the outside air to be introduced into the exhaust pipe by the outside air inlet section, thereby reducing the exhaust temperature.

[0030]

[0031]

[0032] The present invention is characterized by a threshing machine having a threshing section for threshing harvested stalks and a sorting section arranged below the threshing section for sorting threshed stalks, a grain storage section arranged side by side with the threshing machine for storing grains, a lifting machine arranged between the threshing machine and the grain storage section for lifting and transporting the first grain sorted by the sorting section toward the grain storage section, an engine arranged forward of the threshing machine and the grain storage section, and a transmission for transmitting the first grain sorted by the sorting section to the grain storage section, the engine being arranged forward of the threshing machine and the grain storage section, and the transmission being transmitted between the threshing machine and the grain storage section. and an exhaust pipe for discharging exhaust gas from the gin, the exhaust pipe having an exhaust port formed at an exhaust downstream end thereof, the exhaust pipe extending above the threshing device between the threshing device and the grain storage section forward of the lifting device, the exhaust port being located forward of the lifting device, the exhaust pipe having a first inclined pipe section inclined upward toward the rear, and a second inclined pipe section connected to the exhaust downstream end of the first inclined pipe section and inclined upward toward the rear at a steeper angle than the first inclined pipe section, A bulging portion that bulges toward the threshing device in the left-right direction of the machine body is formed in a portion of the threshing device side lateral wall portion of the grain storage section that is located forward of the first inclined pipe portion and the second inclined pipe portion, and the edge portion of the bulging portion on the first inclined pipe portion and the second inclined pipe portion side is formed in a shape that follows the bending shape of the first inclined pipe portion and the second inclined pipe portion in a side view. The point is...

[0033] According to this characteristic configuration, the exhaust port is located above the threshing device and in front of the lifting device. This allows the exhaust pipe to be discharged as high as possible and as far back as possible, without passing the exhaust pipe through the narrow gap between the threshing device and the lifting device, so that the exhaust gas discharged from the exhaust port is not affected by the exhaust gas discharged from the exhaust port. In other words, a combine harvester in which an exhaust pipe can be easily installed can be realized. According to this characteristic configuration, the exhaust gas in the exhaust pipe can be quickly guided upward and rearward by the first inclined pipe portion and the second inclined pipe portion. According to this characteristic configuration, the capacity of the grain storage section can be increased by the bulging section. Also, by expanding the range of the bulging section in a side view to a degree close to the first inclined pipe section and the second inclined pipe section, the capacity of the bulging section can be increased.

[0034] Furthermore, in the present invention, it is preferable that the first inclined pipe section is supported by the threshing device, and the second inclined pipe section is supported by the first inclined pipe section.

[0035] According to this characteristic configuration, the threshing device is used as a member supporting the first inclined pipe section, and the second inclined pipe section is also supported by the threshing device via the first inclined pipe section. This makes it possible to firmly support the first inclined pipe section and the second inclined pipe section.

[0036] The present invention is characterized by a threshing device having a threshing section for threshing harvested stalks and a sorting section arranged below the threshing section for sorting threshed material; a grain storage section arranged side by side with the threshing device for storing grains; a lifting device arranged between the threshing device and the grain storage section for lifting and transporting the first grain sorted by the sorting section to the grain storage section; an engine arranged forward of the threshing device and the grain storage section; and an exhaust pipe passing between the threshing device and the grain storage section for discharging exhaust from the engine, the exhaust pipe having an exhaust outlet formed at the exhaust downstream end, the exhaust pipe extending above the threshing device between the threshing device and the grain storage section forward of the lifting device, the exhaust outlet being located forward of the lifting device, The exhaust pipe is formed in a shape that is inclined upward toward the rear, and a first bulging portion that bulges toward the threshing device in the left-right direction of the machine body is formed in a portion of a lateral wall portion of the grain storage portion on the threshing device side that is located forward of the exhaust pipe. The point is...

[0037] According to this characteristic configuration, the exhaust port is located above the threshing device and in front of the lifting device. This allows the exhaust pipe to be discharged as high as possible and as far back as possible, without passing the exhaust pipe through the narrow gap between the threshing device and the lifting device, so that the exhaust gas discharged from the exhaust port is not affected by the exhaust gas discharged from the exhaust port. In other words, a combine harvester in which an exhaust pipe can be easily installed can be realized. According to this characteristic configuration, the capacity of the grain storage section can be increased by the first bulging section.

[0038] Furthermore, in the present invention, it is preferable that a second bulge portion which bulges toward the threshing device in the left-right direction of the body is formed in the portion of the lateral wall portion on the threshing device side of the grain storage section which is located between the exhaust pipe and the threshing device.

[0039] According to this characteristic configuration, the capacity of the grain storage section can be increased by the second bulging section.

[0040] Furthermore, in the present invention, it is preferable that the second bulging portion overlaps with the grain lifting device when viewed from the front.

[0041] According to this characteristic configuration, the capacity of the second bulging portion can be increased by expanding the range of the second bulging portion in a front view to the extent that it overlaps with the grain lifting device.

[0042] Furthermore, in the present invention, it is preferable that a third bulge portion which bulges toward the threshing device in the left-right direction of the body is formed in a portion of the lateral wall portion on the threshing device side of the grain storage section which is located above the exhaust downstream end of the exhaust pipe in a side view.

[0043] According to this characteristic configuration, the capacity of the grain storage section can be increased by the third bulging section.

[0044] Furthermore, in the present invention, it is preferable that the third bulging portion overlaps with an exhaust downstream end portion of the exhaust pipe in a plan view.

[0045] According to this characteristic configuration, the volume of the third bulging portion can be increased by expanding the range of the third bulging portion in a plan view to the extent that it overlaps with the exhaust downstream end of the exhaust pipe.

[0046] Furthermore, in the present invention, it is preferable that, in a side view, the exhaust downstream end portion of the exhaust pipe is surrounded from the front, rear and above by the first bulge portion, the second bulge portion and the third bulge portion.

[0047] According to this characteristic configuration, the first bulging portion, the second bulging portion, and the third bulging portion can be formed so as not to interfere with the exhaust downstream end portion of the exhaust pipe.

[0048] Furthermore, in the present invention, the first bulge portion and the second bulge portion form a recessed portion in the lateral wall portion on the threshing device side of the grain storage section, which recesses on the opposite side to the threshing device in the left-right direction of the body, the exhaust pipe is arranged so that it enters the recessed portion, the recessed portion is formed in a shape such that its length in the fore-and-aft direction of the body becomes narrower toward the upper side, and the upper end of the recessed portion is preferably open to the threshing device side in the left-right direction of the body, above the threshing device.

[0049] According to this characteristic configuration, the exhaust pipe can be well positioned by utilizing the recess. Also, the hot air around the exhaust pipe trapped in the recess can be easily flowed toward the upper end of the recess, and can be easily discharged from the upper end of the recess in the left-right direction of the machine body toward the threshing device.

[0050] Furthermore, in the present invention, it is preferable that a cover member is provided to cover the portion of the recessed portion located above the threshing device from the threshing device side in the left-right direction of the body, and that the exhaust pipe is passed between the cover member and the recessed portion.

[0051] According to this characteristic configuration, the cover member can prevent dust from entering the portion of the recess that is located above the threshing device, and from getting onto the portion of the exhaust pipe that is located above the threshing device.

[0052] Furthermore, in the present invention, it is preferable that the exhaust port is configured to face the threshing device in the left-right direction of the body, and that the opening end of the exhaust port and the lateral side of the cover member facing the threshing device are configured to be flush or approximately flush.

[0053] According to this characteristic configuration, the recessed portion can be reliably covered by the cover member while preventing the cover member from interfering with the exhaust port.

[0054] Furthermore, in the present invention, it is preferable that a space is formed inside the recess behind an upper end of the exhaust pipe, and that the space is open to the outside of the recess.

[0055] According to this characteristic configuration, the hot air around the exhaust pipe trapped in the recess is discharged from the rear of the upper end of the exhaust pipe to the outside of the recess through the space, so that the hot air around the exhaust pipe trapped in the recess can be easily discharged toward the rear of the aircraft.

[0056] Furthermore, in the present invention, it is preferable that a cover member is provided on the lateral side of the threshing device with respect to the portion of the exhaust pipe that is located above the threshing device, and that covers the portion of the recess that is located above the threshing device from the threshing device side in the left-right direction of the body.

[0057] According to this characteristic configuration, the cover member can prevent dust from entering the portion of the recess that is located above the threshing device, and from getting onto the portion of the exhaust pipe that is located above the threshing device.

[0058] Furthermore, in the present invention, it is preferable that a heat insulating member is provided between the exhaust pipe and the side wall portion of the grain storage section on the threshing device side.

[0059] According to this characteristic configuration, the thermal effect of the exhaust pipe on the side wall portion of the grain storage section on the threshing device side can be prevented by the heat-shielding member. [Brief description of the drawings]

[0060] [Figure 1] FIG. [Diagram 2] FIG. [Diagram 3] FIG. 2 is a left side view showing the grain storage tank, the grain lifting device, the exhaust pipe, and the second reduction device. [Figure 4] A cross-sectional plan view showing the threshing device, grain storage tank, lifting device, exhaust pipe and second reduction device. [Diagram 5] 4 is a cross-sectional view of FIG. 3 . [Figure 6] 6 is a cross-sectional view taken along line VI-VI in FIG. [Figure 7] 7 is a cross-sectional view taken along line VII-VII in FIG. [Figure 8] FIG. 4 is a left side view showing the grain storage tank. [Figure 9] 4 is a rear cross-sectional view showing the exhaust downstream end portion of the exhaust pipe and its surroundings. FIG. DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS

[0061] An embodiment of the present invention will be described with reference to the drawings. In the following description, the direction of the arrow F is the "front side of the aircraft body," the direction of the arrow B is the "rear side of the aircraft body," the direction of the arrow L is the "left side of the aircraft body," and the direction of the arrow R is the "right side of the aircraft body."

[0062] [Overall configuration of the combine] 1 and 2 show a head-feeding combine (corresponding to the "combine" of the present invention). This combine is equipped with a traveling body 1, a reaping section 2, a threshing device 3, a grain storage tank 4 (corresponding to the "grain storage section" of the present invention), a grain discharge device 5, a driver's cabin 6, and a motor section 7.

[0063] The traveling machine body 1 includes left and right crawler traveling devices 8 and a machine body frame 9. The machine body frame 9 is supported by the left and right crawler traveling devices 8. The reaping unit 2 is disposed in front of the traveling machine body 1. The reaping unit 2 is configured to reap planted culms.

[0064] The grain storage tank 4 is arranged next to (to the right of) the threshing device 3. The grain storage tank 4 is configured to store grains. The grain discharge device 5 is configured to discharge the grains in the grain storage tank 4.

[0065] The driver's cabin 6 is disposed in a position biased to one of the left and right sides (the right side in this embodiment) of the traveling vehicle body 1. The driver's cabin 6 comprises a driver's section 10 in which the driver sits, and a cabin section 11 that covers the driver's section 10. The driver's section 10 comprises a driver's seat 10a. An air conditioning unit (not shown) that conditions the interior of the driver's cabin 6 is provided. The air conditioning unit is housed, for example, in the roof section of the cabin section 11.

[0066] A receiver 12 for the air conditioning unit is disposed between the driver's cabin 6 and the grain storage tank 4. A sight glass (not shown) is provided on the upper surface of the receiver 12 to check the amount of refrigerant in the receiver 12. The sight glass can be seen from inside the driver's cabin 6 by opening the rear glass 11a of the cabin section 11.

[0067] [Threshing device] As shown in Figures 1 and 2, the threshing device 3 includes a threshing section 13 and a sorting section 14. The threshing section 13 is configured to thresh the harvested stalks. The threshing section 13 includes a threshing drum 15. The threshing drum 15 is configured to be rotatable around a rotation axis Y1 extending along the front-rear direction of the machine body.

[0068] The sorting section 14 is disposed below the threshing section 13. The sorting section 14 is configured to sort the threshed material into first grain (single grain), second grain (grains with stalks), straw waste, etc. The sorting section 14 includes a oscillating sorting device 16, a first grain recovery section 17, and a second grain recovery section 18. The oscillating sorting device 16 is configured to oscillate and sort the threshed material. The first grain recovery section 17 is configured to recover single grain grains as the first grain. The second grain recovery section 18 is configured to recover grains with stalks as the second grain.

[0069] A lifting device 19 and a second reduction device 20 are arranged between the threshing device 3 and the grain storage tank 4. The lifting device 19 is configured to lift and transport the first grains selected by the sorting section 14 towards the grain storage tank 4. A grain inlet 4a is formed in the upper part of the side wall section (in this embodiment, the left wall section) on the threshing device 3 side of the grain storage tank 4. The lifting device 19 is provided across the first collection section 17 and the grain inlet 4a. The first grains collected by the first collection section 17 are transported upward by the lifting device 19 and then released into the grain storage tank 4 from the grain inlet 4a.

[0070] The second returning device 20 is configured to return the second grains sorted by the sorting section 14 to the sorting section 14. The second returning device 20 includes a conveying section 21 and a guide member 22. The conveying section 21 is disposed rearward of the lifting device 19. The conveying section 21 is configured to convey the second grains collected by the second collecting section 18 upward. The guide member 22 is configured to guide the second grains from the conveying section 21 toward the oscillating sorting device 16. The right side surface of the guide member 22 is formed in a shape that is inclined so as to approach the right wall portion of the threshing section 13 toward the front side in a plan view. The rear end portion of the guide member 22 is connected to the upper end portion of the conveying section 21. The front end portion of the guide member 22 is located forward of the lifting device 19. The second grains collected by the second collecting section 18 are conveyed upward by the conveying section 21, and then guided toward the front portion of the oscillating sorting device 16 by the guide member 22.

[0071] A left top plate 23 and a right top plate 24 are provided above the handling drum 15 so as to cover the handling drum 15 from above. The left top plate 23 is configured to be swingable open and closed about a swing axis Y2 extending along the fore-aft direction of the machine body. The right top plate 24 is configured to be swingable open and closed about a swing axis Y3 extending along the fore-aft direction of the machine body.

[0072] The handling drum 15 is supported by front and rear side plates 25 so as to be rotatable about a rotation axis Y1. The front and rear side plates 25 are configured to be swingable about a swing axis Y4 extending along the fore-aft direction of the machine body. The front and rear side plates 25 swing upward together with the handling drum 15 about the swing axis Y4, causing the handling drum 15 to open upward (see Figures 5 to 7).

[0073] [Motor unit] As shown in Fig. 2 to Fig. 4, the motor unit 7 is disposed below the driver's seat 10a. The motor unit 7 includes an engine E and an exhaust purification device 26. The engine E is disposed forward of the threshing device 3 and the grain storage tank 4. The engine E is disposed below the driver's seat 10a so as to overlap with the driver's seat 10a in a plan view.

[0074] The exhaust purification device 26 is disposed in front of the threshing device 3 and above the engine E. The exhaust purification device 26 is disposed within the lateral width of the threshing device 3. The exhaust purification device 26 is configured to purify the exhaust of the engine E by a DPF (Diesel Particulate Filter). The exhaust purification device 26 includes a main body 27 that houses the DPF, and a tail pipe 28 connected to the main body 27.

[0075] An exhaust section 27a is provided at the rear lower part of the main body 27. The exhaust section 27a protrudes downward from the rear lower part of the main body 27. A tail pipe 28 is connected to the exhaust section 27a from below. The tail pipe 28 has an inclined portion 28a that extends diagonally rearward so as to be located on the grain storage tank 4 side (right side in this embodiment) in the left-right direction of the machine body toward the rear.

[0076] [Exhaust pipe] 3 to 6, an exhaust pipe 29 that discharges the exhaust of the engine E after the exhaust purification device 26 has been purified is connected to the exhaust purification device 26. The exhaust pipe 29 passes between the threshing device 3 and the grain storage tank 4. The exhaust pipe 29 is extended to above the threshing device 3, between the threshing device 3 and the grain storage tank 4, on the front side of the lifting device 19.

[0077] The exhaust pipe 29 is formed in a shape that is inclined upward toward the rear. Specifically, the exhaust pipe 29 extends diagonally backward from the tail pipe 28 so as to be located on the grain storage tank 4 side (on the right side in this embodiment) in the left-right direction of the machine body toward the rear, and extends upward toward the rear between the threshing device 3 and the grain storage tank 4. The exhaust pipe 29 includes a first pipe section 30, a second pipe section 31, and a third pipe section 32. That is, the exhaust pipe 29 is configured by being divided into three pipe sections.

[0078] The first pipe section 30 is connected to the exhaust downstream end (the oblique portion 28a) of the tail pipe 28. The first pipe section 30 includes a first oblique portion 30a and a second oblique portion 30b. The first oblique portion 30a extends obliquely rearward from the tail pipe 28 so as to be located to the right as it approaches the rear. The second oblique portion 30b extends rearward and upward from the exhaust downstream end of the first oblique portion 30a. The oblique portion 28a is inserted into the exhaust upstream end (the first oblique portion 30a) of the first pipe section 30 with a radial gap therebetween. That is, a first outside air introduction section I1 that introduces outside air into the inside of the exhaust pipe 29 is formed between the oblique portion 28a and the first oblique portion 30a.

[0079] The second pipe section 31 is connected to the exhaust downstream end (second oblique portion 30b) of the first pipe section 30. The second pipe section 31 includes a first oblique portion 31a and a second oblique portion 31b. The first oblique portion 31a extends upward toward the rear from the first pipe section 30. The first oblique portion 31a is configured to pass above the front upper end of the front upper end of the guide member 22. The second oblique portion 31b extends upward toward the rear from the first oblique portion 31a at a steeper angle than the first oblique portion 31a. The second oblique portion 30b is inserted into the exhaust upstream end (first oblique portion 31a) of the second pipe section 31 with a radial gap therebetween. That is, a second outside air introduction section I2 that introduces outside air into the inside of the exhaust pipe 29 is formed between the second oblique portion 30b and the first oblique portion 31a.

[0080] The third pipe section 32 is connected to the exhaust downstream end (second oblique portion 31b) of the second pipe section 31. The third pipe section 32 overlaps with the front end of the guide member 22 in a plan view. The third pipe section 32 overlaps with the grain lifting device 19 in a front view. The second oblique portion 31b is inserted into the exhaust upstream end of the third pipe section 32 with a radial gap therebetween. In other words, a third outside air introduction section I3 that introduces outside air into the inside of the exhaust pipe 29 is formed between the second oblique portion 31b and the exhaust upstream end of the third pipe section 32.

[0081] The third pipe section 32 extends upward and rearward from the second oblique portion 31b. The third pipe section 32 extends above the upper surface 3a of the threshing device 3 (specifically, the upper surfaces of the left top plate 23 and the right top plate 24). The upper end of the third pipe section 32 is located below the upper end of the grain storage tank 4 and below the upper end of the lifting device 19. In other words, the exhaust pipe 29 extends above the upper surface 3a of the threshing device 3, but does not extend above the upper end of the lifting device 19 and the upper end of the grain storage tank 4.

[0082] An exhaust outlet 32a is formed at the exhaust downstream end of the third pipe section 32. The exhaust outlet 32a is configured to face the threshing device 3 side (left side in this embodiment) in the left-right direction of the machine body. The exhaust outlet 32a overlaps with the threshing device 3 in a plan view. Specifically, the exhaust outlet 32a overlaps with the right edge of the right top plate 24 in a plan view. The exhaust downstream end of the third pipe section 32 is bent toward the left side so that the exhaust outlet 32a is located above the threshing device 3 (right edge of the right top plate 24). The exhaust outlet 32a is located forward of the grain lifting device 19. Specifically, the exhaust outlet 32a is located at a position closer to the grain lifting device 19 side (rear side in this embodiment) between the front end of the grain storage tank 4 and the grain lifting device 19 in the front-rear direction of the machine body.

[0083] The second inclined portion 30b and the first inclined portion 31a form a first inclined pipe section T1 that is inclined upward toward the rear. The second inclined portion 31b and the third pipe section 32 form a second inclined pipe section T2 that is connected to the exhaust downstream end of the first inclined pipe section T1 and is inclined upward toward the rear at a steeper angle than the first inclined pipe section T1. That is, the exhaust pipe 29 includes the first inclined pipe section T1 and the second inclined pipe section T2. ​​In FIG. 3, the inclination angle (first inclination angle) of the first inclined pipe section T1 is indicated by α1, and the inclination angle (second inclination angle) of the second inclined pipe section T2 is indicated by α2. The second inclination angle α2 is greater than the first inclination angle α1.

[0084] The exhaust pipe 29 is supported by the support 34 via a first stay 33, and is supported by the right wall of the threshing device 3 via a second stay 35 and a third stay 36. The first stay 33 is attached to the first pipe section 30. That is, the first pipe section 30 is supported by the support 34 via the first stay 33. A first mounting section 37 is provided on the first diagonal section 30a. The first stay 33 is bolted to the first mounting section 37 and is bolted to the support 34. The support 34 supports the rear of the driver's section 10. The support 34 is erected on the machine frame 9.

[0085] The second stay 35 is attached to the second pipe portion 31. That is, the second pipe portion 31 is supported on the right wall portion of the threshing device 3 via the second stay 35. A second mounting portion 38 is provided on the lower portion of the first diagonal portion 31a. The second stay 35 is bolted to the second mounting portion 38 and is also bolted to the right wall portion of the threshing device 3.

[0086] The third stay 36 is attached to the second pipe portion 31. That is, the second pipe portion 31 is supported on the right wall portion of the threshing device 3 via the third stay 36. A third mounting portion 39 is provided on the upper portion of the first diagonal portion 31a. The third stay 36 is bolted to the third mounting portion 39 and is also bolted to the right wall portion of the threshing device 3.

[0087] The third pipe portion 32 is supported by the second pipe portion 31 via a plurality of (four in this embodiment) fourth stays 40. The fourth stays 40 are fixed to the third pipe portion 32 by bolts, and are also fixed to the second diagonal portion 31b by welding.

[0088] The first inclined portion 31a included in the first inclined pipe portion T1 is supported on the right wall portion of the threshing device 3 via the second stay 35 and the third stay 36. The second inclined pipe portion T2, which is composed of the third pipe portion 32 and the second inclined portion 31b, is supported on the first inclined pipe portion T1 (specifically, the first inclined portion 31a).

[0089] [Grain storage tank] As shown in FIG. 3 and FIG. 4, a first bulging portion 41 (corresponding to the "bulging portion" and "first bulging portion" according to the present invention), a second bulging portion 42, and a third bulging portion 43 bulging to the left are formed on the left wall of the grain storage tank 4. In other words, the first bulging portion 41, the second bulging portion 42, and the third bulging portion 43 form a front recessed portion 44 (corresponding to the "recessed portion" according to the present invention) that is recessed on the opposite side to the threshing device 3 in the left-right direction of the machine body (the right side in this embodiment) on the left wall of the grain storage tank 4. That is, the first bulging portion 41, the second bulging portion 42, and the third bulging portion 43 bulge to the left with respect to the bottom surface 44a of the front recessed portion 44. A rear recessed portion 45 that is recessed to the right is formed on a portion of the left wall of the grain storage tank 4 that corresponds to the lifting device 19. The lifting device 19 is arranged in a state where it enters the rear recessed portion 45.

[0090] The exhaust pipe 29 is arranged so as to enter the front recess 44. The front recess 44 is formed in a shape in which the length in the front-rear direction of the machine body becomes narrower toward the upper side. In FIG. 3, the length in the front-rear direction of the machine body of the upper end of the front recess 44 is indicated by L. The front recess 44 extends above the upper surface 3a of the threshing device 3. In other words, the upper end of the front recess 44 is open to the left side above the threshing device 3.

[0091] Inside the front recess 44, a space S is formed around the upper end of the third pipe 32. Inside the front recess 44, the space S is formed above, to the right, in front, and behind the upper end of the third pipe 32. The space S is open to the outside of the front recess 44.

[0092] 3 to 8, the first bulging portion 41, the second bulging portion 42, and the third bulging portion 43 are formed in a portion of the left wall portion of the grain storage tank 4 that is forward of the lifting device 19. In a side view, the exhaust downstream end portion (exhaust port 32a) of the third pipe portion 32 is surrounded from the front, rear, and above by the first bulging portion 41, the second bulging portion 42, and the third bulging portion 43.

[0093] The first bulging portion 41 is formed in a portion of the left wall of the grain storage tank 4 that is located forward of the exhaust pipe 29 so as to bulge to the left. That is, the first bulging portion 41 is formed in a portion of the left wall of the grain storage tank 4 that is located forward of the first inclined pipe portion T1 and the second inclined pipe portion T2.

[0094] The second bulging portion 42 is formed in a portion of the left wall of the grain storage tank 4 that is located between the exhaust pipe 29 and the grain lifting device 19 so as to bulge to the left. The second bulging portion 42 overlaps with the grain lifting device 19 in a front view. The second bulging portion 42 has an upper bulging portion 42A, a middle bulging portion 42b, and a lower bulging portion 42C. The amount of bulging to the left relative to the bottom surface 44a of the front recess 44 is greatest for the upper bulging portion 42A, the middle bulging portion 42B, and the lower bulging portion 42C, in that order. The middle bulging portion 42B is formed in a shape that slopes downward to the right.

[0095] The third bulging portion 43 is formed in a portion of the left wall of the grain storage tank 4 that is located above the exhaust downstream end of the third pipe portion 32 in a side view so as to bulge to the left. The third bulging portion 43 overlaps with the exhaust downstream end of the third pipe portion 32 in a plan view.

[0096] In Figure 8, the boundary between the first bulge portion 41 and the third bulge portion 43 is indicated as B1, the boundary between the second bulge portion 42 and the third bulge portion 43 is indicated as B2, and the boundaries between the first bulge portion 41, the second bulge portion 42 and the third bulge portion 43 and the bottom surface 44a of the front recess portion 44 (i.e., the respective edges of the first bulge portion 41, the second bulge portion 42 and the third bulge portion 43) are indicated as B3, B4, B5 and B6.

[0097] Edges B3 and B4 of the first bulging portion 41 are formed in a shape that inclines upward toward the rear. Edge B4 of the first bulging portion 41 is formed in a shape that inclines upward toward the rear at a steeper angle than edge B3 of the first bulging portion 41. In other words, edges B3 and B4 of the first bulging portion 41 on the first inclined pipe portion T1 and second inclined pipe portion T2 side are formed in a shape that follows the bending shape of the first inclined pipe portion T1 and second inclined pipe portion T2 in a side view.

[0098] Of the first bulging portion 41, surfaces 41a, 41b on the side of the bottom surface 44a of the front recessed portion 44 are configured as inclined surfaces that slope downward toward the bottom surface 44a of the front recessed portion 44. Of the second bulging portion 42, surface 42a on the side of the bottom surface 44a of the front recessed portion 44 is configured as an inclined surface that slopes downward toward the bottom surface 44a of the front recessed portion 44. Of the third bulging portion 43, surface 43a on the side of the bottom surface 44a of the front recessed portion 44 is configured as an inclined surface that slopes downward toward the bottom surface 44a of the front recessed portion 44.

[0099] [Heat shielding member] 3 to 6, an upper heat insulating member 46 (corresponding to the "heat insulating member" according to the present invention) and a lower heat insulating member 47 (corresponding to the "heat insulating member" according to the present invention) are provided between the exhaust pipe 29 and the left wall of the grain storage tank 4. The upper heat insulating member 46 and the lower heat insulating member 47 are provided in a state in which they fit into the front recess 44.

[0100] The upper heat shield 46 is provided at a position above the connection portion between the first inclined pipe section T1 and the second inclined pipe section T2. ​​In other words, the upper heat shield 46 is provided at a position corresponding to the second inclined pipe section T2. ​​The upper heat shield 46 is supported by the third pipe section 32. The upper heat shield 46 is fixed to the third pipe section 32 by a plurality of bolts 49 (four in this embodiment).

[0101] The lower heat shield 47 is provided at a position lower than the connection portion between the first inclined pipe portion T1 and the second inclined pipe portion T2. ​​That is, the lower heat shield 47 is provided at a position corresponding to the first inclined pipe portion T1. The lower heat shield 47 is supported by the second pipe portion 31.

[0102] [Cover member] As shown in Figures 3 and 9, a cover member 50 is provided to cover from the left side the portion of the front recess 44 that is located above the threshing device 3. The cover member 50 is provided laterally (in this embodiment, to the left) on the threshing device 3 side of the portion of the third pipe section 32 that is located above the threshing device 3. The cover member 50 is supported by the third pipe section 32 via a stay 51. The stay 51 is fastened together with the upper heat shield member 46 to the third pipe section 32 (fixed by bolts 49).

[0103] The third pipe portion 32 is passed between the cover member 50 and the front recess 44. The cover member 50 is configured not to block the exhaust port 32a. The cover member 50 is formed with an opening for exposing the exhaust port 32a entirely in a side view. The open end of the exhaust port 32a and the lateral side surface of the cover member 50 on the threshing device 3 side (the left side surface in this embodiment) are configured to be flush or approximately flush with each other.

[0104] [Another embodiment] (1) In the above embodiment, the exhaust pipe 29 is extended upward toward the rear between the threshing device 3 and the grain storage tank 4 to a position above the threshing device 3. However, the exhaust pipe 29 may be extended vertically upward between the threshing device 3 and the grain storage tank 4 to a position above the threshing device 3.

[0105] (2) In the above embodiment, the exhaust port 32a is configured to face the threshing device 3 side (the left side in the above embodiment) in the left-right direction of the machine body. However, the exhaust port 32a may be configured to face the rear side.

[0106] (3) In the above embodiment, the exhaust port 32a overlaps with the threshing device 3 in a plan view. However, the exhaust port 32a does not have to overlap with the threshing device 3 in a plan view.

[0107] (4) In the above embodiment, the exhaust port 32a is located near the lifting device 19 (rear side in the above embodiment) between the front end of the grain storage tank 4 and the lifting device 19 in the fore-aft direction of the machine body. However, the exhaust port 32a may be located near the front end of the grain storage tank 4 between the front end of the grain storage tank 4 and the lifting device 19 in the fore-aft direction of the machine body. Alternatively, the exhaust port 32a may be located in the center between the front end of the grain storage tank 4 and the lifting device 19 in the fore-aft direction of the machine body.

[0108] (5) In the above embodiment, the third pipe portion 32 overlaps with the front end portion of the guide member 22 in a plan view. However, the exhaust pipe 29 does not have to overlap with the front end portion of the second reduction device 20 in a plan view.

[0109] (6) In the above embodiment, the third pipe portion 32 overlaps with the lifting device 19 in a front view. However, the exhaust pipe 29 does not have to overlap with the lifting device 19 in a front view.

[0110] (7) In the above embodiment, the exhaust pipe 29 is supported by the threshing device 3. However, the exhaust pipe 29 does not have to be supported by the threshing device 3.

[0111] (8) In the above embodiment, the motor unit 7 is equipped with the DPF type exhaust purification device 26. However, the motor unit 7 may be equipped with a urea SCR (Selective Catalytic Reduction) type exhaust purification device in addition to the DPF type exhaust purification device 26. Alternatively, the motor unit 7 may not be equipped with either the DPF type exhaust purification device 26 or the urea SCR type exhaust purification device.

[0112] (9) In the above embodiment, the first pipe section 30 (first oblique portion 30a) extends obliquely rearward from the tail pipe 28 so as to be located to the right as it approaches the rear. However, the exhaust pipe 29 may extend linearly rearward from the exhaust purification device 26 in a plan view.

[0113] (10) In the above embodiment, the exhaust pipe 29 includes a first pipe section 30, a second pipe section 31, and a third pipe section 32. That is, the exhaust pipe 29 is configured to be divided into three pipe sections. However, the exhaust pipe 29 may be configured to be divided into two pipe sections, or may be configured to be divided into four or more pipe sections. Alternatively, the exhaust pipe 29 does not have to be configured to be divided into a plurality of pipe sections.

[0114] (11) In the above embodiment, the second inclined pipe section T2 is inclined upward toward the rear at a steeper angle than the first inclined pipe section T1. However, the first inclined pipe section T1 may be inclined upward toward the rear at a steeper angle than the second inclined pipe section T2. ​​Alternatively, the inclination angle of the first inclined pipe section T1 and the inclination angle of the second inclined pipe section T2 may be the same.

[0115] (12) In the above embodiment, the edge portions B3 and B4 of the first bulging portion 41 on the side of the first inclined pipe portion T1 and the second inclined pipe portion T2 are formed into a shape that follows the bending shape of the first inclined pipe portion T1 and the second inclined pipe portion T2 in side view. However, the edge portions B3 and B4 of the first bulging portion 41 on the side of the first inclined pipe portion T1 and the second inclined pipe portion T2 do not have to be formed into a shape that follows the bending shape of the first inclined pipe portion T1 and the second inclined pipe portion T2 in side view.

[0116] (13) In the above embodiment, the first bulging portion 41, the second bulging portion 42, and the third bulging portion 43 are formed on the left wall portion of the grain storage tank 4. However, in addition to the first bulging portion 41, the second bulging portion 42, and the third bulging portion 43, one or more bulging portions other than these may be formed on the left wall portion of the grain storage tank 4. Alternatively, at least any of the first bulging portion 41, the second bulging portion 42, and the third bulging portion 43 may not be formed on the left wall portion of the grain storage tank 4.

[0117] (14) In the above embodiment, the "grain storage unit" according to the present invention is configured by a tank-type grain storage unit (grain storage tank 4). However, the "grain storage unit" according to the present invention may be configured by a hopper-type grain storage unit. [Industrial Applicability]

[0118] The present invention can be used not only in head-feeding combine harvesters but also in whole-culm-injection combine harvesters. [Explanation of symbols]

[0119] 3. Threshing equipment 4 Grain storage tank (grain storage section) 13 Threshing Department 14 Sorting Department 19 Grain frying equipment 20 Second reduction device 26 Exhaust purification device 28 Tail pipe 29 Exhaust pipe 30 First pipe section 31 Second pipe section 32a Exhaust port 41 First bulge (bulge, first bulge) 42 Second bulge 43 Third bulge 44 Recessed 46 Upper heat shielding member (heat shielding member) 47 Lower heat shielding member (heat shielding member) 50 Cover member B3 Edge B4 Edge E-Engine S space T1 First inclined pipe section T2 Second inclined pipe section

Claims

1. A threshing device having a threshing section that threshes reaped stalks and a sorting section that is arranged below the threshing section and sorts the threshed material; A grain storage section arranged side by side with the threshing device and storing grains; A lifting device is provided between the threshing device and the grain storage section, and lifts and conveys the first grain selected by the sorting section toward the grain storage section. The lifting device is located rearward of the center between the front end and the rear end of the threshing device in the front-rear direction of the machine body, An engine disposed forward of the threshing device and the grain storage unit; An exhaust pipe that passes between the threshing device and the grain storage section and discharges exhaust gas from the engine; An exhaust port is formed at an exhaust downstream end of the exhaust pipe, The exhaust pipe is extended above the threshing device between the threshing device and the grain storage section in front of the lifting device, A combine harvester in which the exhaust outlet is located forward of the grain lifting device and, in the fore-and-aft direction of the machine body, at a position closer to the grain lifting device between the front end of the grain storage section and the grain lifting device.

2. The combine harvester according to claim 1 , wherein the exhaust port is configured to face the threshing device in the left-right direction of the machine body.

3. The combine harvester according to claim 1 or 2, wherein the exhaust port overlaps with the threshing device in a plan view.

4. A combine harvester as described in claim 3, wherein the exhaust downstream end of the exhaust pipe is bent in the left-right direction of the body toward the threshing device so that the exhaust outlet is located above the threshing device.

5. A second return device is provided for returning the second item sorted by the sorting unit to the sorting unit, The front end of the second reduction device is located forward of the lifting device, The combine harvester according to any one of claims 1 to 4, wherein the exhaust pipe is configured to pass above a front upper end portion of the second reduction device.

6. The combine harvester according to claim 5 , wherein the exhaust pipe overlaps with a front end portion of the second reduction device in a plan view.

7. The combine harvester according to any one of claims 1 to 6, wherein the exhaust pipe overlaps with the grain lifting device in a front view.

8. The combine harvester according to any one of claims 1 to 7, wherein the exhaust pipe is supported by the threshing device.

9. an exhaust purification device that purifies exhaust gas from the engine; The exhaust purification device is disposed in front of the threshing device and above the engine, A combine harvester as described in any one of claims 1 to 8, wherein the exhaust pipe extends diagonally rearward from the exhaust purification device so as to be located toward the grain storage section in the left-right direction of the body toward the rear, and extends upward toward the rear between the threshing device and the grain storage section.

10. The combine harvester of claim 9, wherein the exhaust pipe has a first pipe section connected to the exhaust downstream end of the tail pipe of the exhaust purification device, and a second pipe section supported by the threshing device and connected to the exhaust downstream end of the first pipe section.

11. The combine harvester according to claim 10, wherein the exhaust downstream end of the first pipe section is inserted into the exhaust upstream end of the second pipe section with a radial gap therebetween.

12. A threshing device having a threshing section that threshes reaped stalks and a sorting section that is arranged below the threshing section and sorts the threshed material; A grain storage section arranged side by side with the threshing device and storing grains; A lifting device is arranged between the threshing device and the grain storage section and lifts and conveys the first grain selected by the sorting section toward the grain storage section; An engine disposed forward of the threshing device and the grain storage unit; An exhaust pipe that passes between the threshing device and the grain storage section and discharges exhaust gas from the engine; An exhaust port is formed at an exhaust downstream end of the exhaust pipe, The exhaust pipe is extended above the threshing device between the threshing device and the grain storage section in front of the lifting device, The exhaust port is located forward of the lifting device, the exhaust pipe has a first inclined pipe section inclined upward toward the rear, and a second inclined pipe section connected to an exhaust downstream end of the first inclined pipe section and inclined upward toward the rear at a steeper angle than the first inclined pipe section, A bulging portion that bulges toward the threshing device in the left-right direction of the machine body is formed in a portion of the threshing device side lateral wall portion of the grain storage section that is located forward of the first inclined pipe portion and the second inclined pipe portion, A combine harvester in which the edge portion of the bulging portion on the side of the first inclined pipe portion and the second inclined pipe portion is formed into a shape that follows the bending shape of the first inclined pipe portion and the second inclined pipe portion when viewed from the side.

13. The combine harvester according to claim 12, wherein the first inclined pipe section is supported by the threshing device, and the second inclined pipe section is supported by the first inclined pipe section.

14. A threshing device having a threshing section that threshes reaped stalks and a sorting section that is arranged below the threshing section and sorts the threshed material; A grain storage section arranged side by side with the threshing device and storing grains; A lifting device is arranged between the threshing device and the grain storage section and lifts and conveys the first grain selected by the sorting section toward the grain storage section; An engine disposed forward of the threshing device and the grain storage unit; An exhaust pipe that passes between the threshing device and the grain storage section and discharges exhaust gas from the engine; An exhaust port is formed at an exhaust downstream end of the exhaust pipe, The exhaust pipe is extended above the threshing device between the threshing device and the grain storage section in front of the lifting device, The exhaust port is located forward of the lifting device, The exhaust pipe is formed in a shape that is inclined upward toward the rear, A combine harvester in which a first bulge portion that bulges toward the threshing device in the left-right direction of the body is formed on a portion of the lateral wall portion of the grain storage section on the threshing device side that is located forward of the exhaust pipe.

15. A combine as described in claim 14, wherein a second bulge portion that bulges toward the threshing device in the left-right direction of the body is formed in a portion of the lateral wall portion of the grain storage section on the threshing device side that is located between the exhaust pipe and the lifting device.

16. The combine harvester according to claim 15, wherein the second bulging portion overlaps with the grain lifting device in a front view.

17. A combine harvester as described in claim 15 or 16, wherein a third bulge portion that bulges toward the threshing device in the left-right direction of the body is formed in a portion of the lateral wall portion of the grain storage section on the threshing device side that is located above the exhaust downstream end of the exhaust pipe in a side view.

18. The combine harvester according to claim 17 , wherein the third bulge portion overlaps with an exhaust downstream end portion of the exhaust pipe in a plan view.

19. The combine harvester according to claim 17 or 18, wherein, in a side view, the exhaust downstream end of the exhaust pipe is surrounded from the front, rear and above by the first bulge portion, the second bulge portion and the third bulge portion.

20. The first bulging portion and the second bulging portion form a recessed portion that recesses into the side wall portion of the grain storage portion on the side of the threshing device in the left-right direction of the machine body opposite the threshing device, The exhaust pipe is disposed in a state where it enters the recessed portion, The recessed portion is formed in a shape in which the length in the longitudinal direction of the aircraft becomes narrower toward the upper side, A combine harvester as described in any one of claims 15 to 19, wherein the upper end of the recessed portion is open toward the threshing device in the left-right direction of the body, above the threshing device.

21. A cover member is provided to cover a portion of the recess located above the threshing device from the threshing device side in the left-right direction of the machine body, The combine harvester according to claim 20, wherein the exhaust pipe is passed between the cover member and the recessed portion.

22. The exhaust port is configured to face the threshing device in the left-right direction of the machine body, The combine harvester according to claim 21, wherein the open end of the exhaust port and the lateral side surface of the cover member facing the threshing device are configured to be flush or approximately flush with each other.

23. A space is formed inside the recess behind an upper end of the exhaust pipe, The combine harvester according to any one of claims 20 to 22, wherein the space is open to the outside of the recessed portion.

24. A combine harvester as described in any one of claims 20 to 23, wherein a cover member is provided on the lateral side of the threshing device with respect to a portion of the exhaust pipe that is located above the threshing device, covering a portion of the recess that is located above the threshing device from the threshing device side in the left-right direction of the body.

25. A combine harvester as described in any one of claims 1 to 24, wherein a heat insulating member is provided between the exhaust pipe and a side wall portion of the grain storage section on the side of the threshing device.

Images