JP7004612B2 - combine - Google Patents

Description

The present invention includes a threshing device for threshing a harvested grain harvester, a grain storage unit provided side by side with the threshing device to store the grains after the threshing process, and an exhaust purification device for purifying the exhaust of the engine. It relates to a combine provided with an exhaust pipe for discharging exhaust after purification treatment by an exhaust purification device.

As the above-mentioned combine, for example, the combine described in Patent Document 1 is already known. In Patent Document 1, a threshing device for threshing a harvested grain (“threshing device [19]” in the document) and a grain storage unit (“threshing device [19]” in the document) provided side by side with the threshing device to store the grains after the threshing process ( In the literature, "grain tank [20]"), an exhaust purification device ("exhaust treatment device [33]" in the literature) that purifies the exhaust of the engine ("diesel engine [15]" in the literature), and exhaust purification. A combine provided with an exhaust pipe (“connected exhaust pipe [61]” in the literature) for discharging exhaust gas after purification treatment by the apparatus is disclosed. The exhaust pipe is arranged between the left and right crawler traveling devices, and extends rearward from the exhaust purification device.

Japanese Unexamined Patent Publication No. 2014-97037

In the combine described in Patent Document 1, since the exhaust pipe is located at the lower part of the machine body, straw debris and the like are likely to accumulate on the exhaust pipe. In addition, due to the presence of hot air trapped in the lower part of the machine body, it is not possible to efficiently cool the exhaust gas in the exhaust pipe.

In view of the above situation, there is a demand for a combine that makes it difficult for straw debris and the like to accumulate in the exhaust pipe and that can efficiently cool the exhaust gas in the exhaust pipe.

The feature of the present invention is that it has a threshing device that has a threshing body that can rotate around the axis extending in the front-rear direction of the machine and threshing the harvested grain, and a threshing device that is provided side by side with the threshing device and threshed grains. The threshing device and the grain storage section are passed between the threshing device and the grain storage section in a plan view, the grain storage section for storing the engine, the exhaust purification device provided above the engine for purifying the exhaust of the engine, and the exhaust. An exhaust pipe for discharging the exhaust after the purification treatment by the purifying device is provided, and the exhaust pipe is provided back and forth between a position corresponding to the front part of the threshing device and a position corresponding to the rear part of the threshing device. It extends and is located above the axis over the position corresponding to the front part of the threshing device and the position corresponding to the rear part of the threshing device, and the front end portion of the exhaust pipe is viewed in plan. It is connected to the exhaust purification device in a state of overlapping with the exhaust purification device and the engine .

According to this feature configuration, the exhaust pipe extends back and forth between the position corresponding to the front part of the threshing device and the position corresponding to the rear part of the threshing device, and the position corresponding to the front part of the threshing device. It is located above the threshing device over a position corresponding to the rear of the threshing device. That is, the exhaust pipe is located at the upper part of the machine body. As a result, straw debris and the like are less likely to accumulate in the exhaust pipe. In addition, the cold outside air flowing in the upper part of the machine body can efficiently cool the exhaust gas in the exhaust pipe.

Further, in the present invention, an operating unit provided in front of the grain storage unit is provided, and the exhaust gas purification device is provided in front of the threshing device and the grain storage unit, below the operating unit. It is preferable that it is provided.

According to this feature configuration, the exhaust pipe extending from the exhaust port of the exhaust purification device is extended straight or substantially straight toward the rear, and it is easy to pass between the threshing device and the grain storage portion in a plan view.

Further, in the present invention, it is preferable that the left-right range of the threshing device and the left-right range of the exhaust gas purification device overlap.

According to this feature configuration, at least a part of the exhaust gas purification device is located in front of the threshing device. As a result, even a large exhaust gas purification device can be arranged by utilizing the space in front of the threshing device.

Further, in the present invention, a wall insert for blowing a sorting wind is provided in the front part of the threshing device, and the exhaust pipe is located above the threshing device at a position in front of the wall insert. Suitable.

According to this feature configuration, the exhaust pipe is positioned as high as possible from the position closer to the front side of the airframe. As a result, straw debris and the like are less likely to accumulate in the exhaust pipe, and the exhaust gas in the exhaust pipe can be cooled more efficiently.

Further, in the present invention, it is preferable that the exhaust pipe is located below the upper end of the grain storage portion.

According to this feature configuration, it is possible to prevent the height position of the exhaust pipe from becoming too high so that the exhaust pipe does not come into contact with the upper part of the barn when the combine is stored in the barn or the like.

Further, in the present invention, a grain discharging device is provided which is configured to be rotatable around an axis extending in the vertical direction and discharges grains in the grain storage portion to the outside, and the grain discharging device is the grain. It is configured to be able to be stored in a storage position located next to the threshing device side with respect to the grain storage portion, and the exhaust pipe is located below the lower end of the grain discharge device in the storage position. Is suitable.

According to this feature configuration, it is possible to ensure that the exhaust pipe does not come into contact with the upper part of the barn when the combine is stored in the barn or the like.

Further, in the present invention, it is preferable that the exhaust pipe extends upward from the exhaust port of the exhaust purification device and then extends rearward in a state of being inclined backward.

According to this feature configuration, the exhaust gas from the exhaust port of the exhaust purification device can be guided to a high height position at once, and then the exhaust gas can be smoothly discharged.

Further, in the present invention, it is preferable that an exhaust pipe cover covering the exhaust pipe from above is provided, the exhaust pipe is supported by the threshing device, and the exhaust pipe cover is supported by the exhaust pipe. Is.

According to this characteristic configuration, since the exhaust pipe is covered from above by the exhaust pipe cover, it is difficult for straw debris and the like to accumulate on the exhaust pipe. In addition, with the exhaust pipe cover assembled to the exhaust pipe (the exhaust pipe and the exhaust pipe cover are unitized), the exhaust pipe can be assembled together with the exhaust pipe cover to the threshing device to facilitate the assembly work. It can be carried out.

Further, in the present invention, it is preferable that the exhaust pipe cover is provided with at least one of an inclined portion inclined downward toward the threshing device and an inclined portion inclined downward toward the grain storage portion.

According to this characteristic configuration, even if straw dust or the like falls on the exhaust pipe cover, it slides down along the inclined portion, so that it is more difficult for the straw dust or the like to accumulate on the exhaust pipe cover.

It is a right side view which shows a head-feeding combine. It is a top view which shows the head-feeding combine. It is a left side view which shows the driving part. It is a top view which shows the driving part. It is a right side view which shows the exhaust pipe and the exhaust pipe cover. It is a top view which shows the exhaust pipe and the exhaust pipe cover. It is a right side sectional view which shows the exhaust pipe and the exhaust pipe cover. It is a front sectional view which shows the exhaust pipe and the exhaust pipe cover. The right side showing the relationship between the position where the rear end of the first cover and the front end of the second cover overlap and the position where the rear end of the first exhaust pipe member and the front end of the second exhaust pipe member overlap. It is a cross-sectional view. It is a front view which shows the exhaust pipe and the exhaust pipe cover. It is a right side view which shows the relationship between a position holding mechanism and an exhaust pipe cover.

A mode for carrying out 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" (see FIGS. 1 and 2), the direction of the arrow B is the "rear side of the aircraft" (see FIGS. 1 and 2), and the direction of the arrow L is ". The direction of the arrow R is "the left side of the aircraft" (see FIG. 2), and the direction of the arrow R is "the right side of the aircraft" (see FIG. 2).

[Overall composition of combine harvester]
1 and 2 show a head-feeding combine. The combine is provided with an airframe frame 1 and a pair of left and right crawler traveling devices 2. In front of the traveling machine, a cutting section 3 for cutting the planted culm is provided. On the right side of the front part of the traveling machine, a driving unit 4 on which the driver is boarded is provided. An engine room ER for accommodating the engine E is provided below the driving unit 4. Behind the cutting unit 3, a threshing device 5 for threshing the cut grain culm is provided. A transport section 6 is provided across the harvesting section 3 and the threshing device 5 to transport the cut grain culms from the harvesting section 3 toward the threshing device 5. A grain storage tank 10 (grain storage section) for storing grains after the threshing process is provided side by side with the threshing device 5. The grain storage tank 10 can be swung open and closed around the axis Z1 extending in the vertical direction over the working position (closed position) and the maintenance position (open position).

A grain discharge device 11 (working device) for discharging grains in the grain storage tank 10 to the outside is provided. The grain discharging device 11 includes a vertical transport section 12 for transporting grains in the grain storage tank 10 upward, and a horizontal transport section 13 for transporting grains from the vertical transport section 12 toward the outside of the machine body. And are provided. The grain discharge device 11 is configured to be rotatable around an axial center (axis center of the vertical transport portion 12) Z1 extending in the vertical direction, and is laterally adjacent to the grain storage tank 10 on the threshing device 5 side (left). It is configured so that it can be stored in the storage position located next to it. The lower end of the vertical transport portion 12 is communicated with the bottom of the grain storage tank 10. The end of the horizontal transport section 13 on the vertical transport section 12 side is communicated with the upper end of the vertical transport section 12 and is supported so as to be swingable up and down.

As shown in FIG. 3, a transmission T for shifting the power from the engine E is provided. The transmission T is provided with a hydraulic continuously variable transmission (HST) 14 as a main transmission and a transmission case 15. The transmission case 15 houses a gear-type auxiliary transmission and the like.

[Driver]
As shown in FIGS. 3 and 4, the operation unit 4 is provided in front of the grain storage tank 10 on the side (right side) of the transport unit 6. The driver unit 4 is provided with a driver's seat 16, a front panel 17, and a side panel 18. Behind the driver's seat 16, an air cleaner 19 for the engine E and a pre-cleaner 20 for the engine E are provided. The air cleaner 19 is arranged diagonally in a plan view so as to be located on the front side toward the right end thereof.

The front panel 17 is provided with a steering lever 21, a meter panel 22, a combination switch 23, and a starter switch 24. The steering lever 21 controls the steering of the traveling machine, raises and lowers the cutting unit 3, and the like. The combination switch 23 is used to turn on / off the headlights, operate the horn, and the like. The starter switch 24 operates to start and stop the engine E.

The side panel 18 is provided on one side (left side) on which the transport unit 6 is located in the left-right direction of the machine with respect to the driver's seat 16. The side panel 18 is provided with an upper plate 25 constituting an upper surface portion and an exterior cover 26 that covers the upper plate 25 from above. The left-right range of the threshing device 5 and the left-right range of the side panel 18 overlap. The side panel 18 is provided with a main shift lever 27, an auxiliary shift lever 28, a clutch lever 29, an aircraft attitude operation switch 30 (aircraft attitude operation tool), and a grain discharge device operation switch 31 (work device attitude operation tool). There is. An inclined portion 18a that is inclined downward (downward to the right) toward the driver's seat 16 is formed in a portion of the side panel 18 adjacent to the driver's seat 16 so as not to interfere with the driver's seat 16.

The main shift lever 27 shifts the HST 14. The main shift lever 27 is configured to be able to swing back and forth around the axis X1 extending in the left-right direction of the machine body. The auxiliary transmission lever 28 shifts the auxiliary transmission. The clutch lever 29 switches between a cutting clutch (not shown) and a threshing clutch (not shown).

The aircraft posture operation switch 30 operates the attitude of the aircraft in a horizontal (front-back direction, left-right direction) state. The machine body posture operation switch 30 is provided with an automatic operation switch 30a, a front / rear manual operation switch 30b, and a left / right manual operation switch 30c. The automatic operation switch 30a, the front / rear manual operation switch 30b, and the left / right manual operation switch 30c are provided in a state of being located in this order from the front side. The automatic operation switch 30a automatically operates the posture of the machine body in a horizontal state in the front-rear direction and the left-right direction. The front-rear manual operation switch 30b manually operates the posture of the machine body in a horizontal state in the front-rear direction. The left-right manual operation switch 30c manually operates the posture of the machine body in a horizontal state in the left-right direction.

The grain discharge device operation switch 31 includes a clutch switching operation unit that switches the grain discharge clutch (not shown) between an on state and an off state, a swivel operation unit that swivels the grain discharge device 11, and grains. An elevating operation unit for elevating and lowering the discharge device 11 is provided.

〔engine room〕
As shown in FIGS. 3 to 6, in the engine room ER, in addition to the engine E, an exhaust purification device 32 that purifies the exhaust gas of the engine E, a radiator 33 that dissipates heat from the engine cooling water, and a cooling that cools the radiator 33. The fan 34 is housed. The radiator 33 is provided on the lateral outer side (right side) of the body with respect to the engine E. A dustproof cover 35 is provided to cover the right side of the radiator 33 and the engine room ER from the right side in a state of allowing ventilation and blocking the passage of dust.

The exhaust gas purification device 32 purifies the exhaust gas of the engine E by a DPF (diesel particulate filter). The exhaust gas purification device 32 is provided in front of the threshing device 5 and the grain storage tank 10 and below the operating unit 4. The left-right range of the threshing device 5 and the left-right range of the exhaust gas purification device 32 overlap. The exhaust gas purification device 32 is provided above the engine E below the rear portion of the side panel 18 in a posture in which the longitudinal direction thereof is along the front-rear direction of the machine body. More specifically, in the exhaust gas purification device 32, on the front side of the threshing device 5, the left and right range of the exhaust gas purification device 32 overlaps with the left and right range of the portion of the threshing device 5 on the grain storage tank 10 side (right side). Moreover, the exhaust gas purification device 32 is provided in a state where the longitudinal direction is along the front-rear direction of the machine body. An exhaust port 32a is provided on the upper part of the outer circumference of the exhaust purification device 32. The exhaust port 32a of the exhaust purification device 32 extends diagonally upward (diagonally upward to the right) on the grain storage tank 10 side (right side) in the left-right direction of the machine body.

The exhaust gas purification device 32 is provided with harnesses and stays for various sensors. An opening is formed in a portion of the upper plate 25 of the side panel 18 located above the exhaust gas purification device 32 so as not to interfere with the stay, the stay, or the like, and a cover 96 covering the opening from above is provided. It is attached so as to protrude upward from the upper surface of the upper plate 25 of the side panel 18.

The exhaust gas purification device 32 is provided with a harness H for a temperature sensor. The harness H is arranged so that the route is the shortest route. In the present embodiment, the harness H extends from the upper part of the exhaust gas purification device 32, passes through the left side of the exhaust gas purification device 32 and extends downward, and is between the upper and lower parts of the exhaust gas purification device 32 and the engine E. It extends through to the right and extends downwards through the right side with respect to engine E.

An engine room forming body 37 forming an engine room ER is provided. The engine room forming body 37 is provided with a side panel 18 and an engine bonnet 38. In the engine room forming body 37, the engine bonnet 38 is located on the right side and the side panel 18 is located on the left side. That is, the engine bonnet 38 constitutes the right side portion of the engine room forming body 37, and the side panel 18 constitutes the left side portion of the engine room forming body 37. The engine bonnet 38 is provided with a top plate 39 on which the driver's seat 16 is placed and supported, and a front wall 40 extending from the front end portion of the top plate 39 to the floor portion of the driver unit 4.

[Threshing device]
As shown in FIGS. 5 and 6, the handling cylinder 41 is rotatably provided around the axis Y1 extending in the front-rear direction of the machine body on the upper part of the threshing device 5. A top plate 42 that covers the handling cylinder 41 from above is provided. A sorting unit 43 is provided at the bottom of the threshing device 5. The sorting unit 43 is configured to sort the sorted products and collect the first grain (single grain, etc.) and the second grain (grain with branch stem, etc.). .. A wall insert 44 that blows the sorting air is provided in the front part of the sorting unit 43. On the right side of the threshing device 5, a vertical transport device 45 for transporting the grain of the first grain upward toward the grain storage tank 10 is provided.

[Position holding mechanism]
As shown in FIGS. 10 and 11, a position holding mechanism 46 for holding the grain storage tank 10 in a closed position is provided. The position holding mechanism 46 includes a pin 47, a hook 48 that can be engaged with the pin 47, a spring 49, and an operation rod 50. The pin 47 is supported by a stay 51 fixed to the right wall of the threshing device 5. The hook 48 is swingably supported by a stay 52 fixed to the front surface of the grain storage tank 10. The spring 49 swings and urges the hook 48 to the side that engages with the pin 47. The operation rod 50 swings the hook 48 toward the disengagement side.

By engaging the hook 48 with the pin 47, the grain storage tank 10 is held in the closed position. By pulling the operation rod 50 from the lateral outer side (right side) of the machine body, the hook 48 swings to the disengagement side against the urging force of the spring 49. With the hook 48 disengaged from the pin 47, the grain storage tank 10 can be swung to the open position.

〔Exhaust pipe〕
As shown in FIGS. 5 to 11, an exhaust pipe 36 for exhausting the exhaust gas after the purification treatment by the exhaust purification device 32 is provided. The exhaust pipe 36 is passed between the threshing device 5 and the grain storage tank 10 in a plan view. The exhaust pipe 36 extends upward from the exhaust port 32a of the exhaust purification device 32, and then extends rearward in a state of being inclined backward. The exhaust pipe 36 extends back and forth between a position corresponding to the front part of the threshing device 5 and a position corresponding to the rear part of the threshing device 5, and a position corresponding to the front part of the threshing device 5 and the threshing device. It is located above the threshing device 5 over the position corresponding to the rear part of 5. The exhaust pipe 36 is located below the upper end of the grain storage tank 10 and below the lower end of the grain discharge device 11 (horizontal transport unit 13) at the storage position. The exhaust pipe 36 is supported by the right wall of the threshing device 5. The exhaust pipe 36 is located above the threshing device 5 at a position in front of the wall insert 44.

The exhaust pipe 36 includes a tail pipe 53 and an exhaust pipe main body 54. The exhaust pipe main body 54 is divided into a plurality of (three in this embodiment) exhaust pipe members in the exhaust flow direction. In the present embodiment, the exhaust pipe main body 54 is divided into a first exhaust pipe member 55, a second exhaust pipe member 56, and a third exhaust pipe member 57 in the exhaust flow direction from the exhaust upstream side. The exhaust pipe 36 is configured so that the diameter increases in the order of the tail pipe 53, the first exhaust pipe member 55, the second exhaust pipe member 56, and the third exhaust pipe member 57. The first exhaust pipe member 55, the second exhaust pipe member 56, and the third exhaust pipe member 57 extend rearward to a position above the threshing device 5. The inclination angle α1 of the second exhaust pipe member 56 with respect to the horizontal plane and the inclination angle α1 of the third exhaust pipe member 57 with respect to the horizontal plane are smaller than the inclination angle α2 of the first exhaust pipe member 55 with respect to the horizontal plane. In the present embodiment, the inclination angle α1 of the second exhaust pipe member 56 with respect to the horizontal plane and the inclination angle α1 of the third exhaust pipe member 57 with respect to the horizontal plane are the same.

[Tail tube]
The tail pipe 53 is bolted to the exhaust port 32a of the exhaust purification device 32. The tail pipe 53 extends diagonally upward (diagonally upward to the right) of the grain storage tank 10 side (right side) in the left-right direction of the machine from the upper part of the outer periphery of the exhaust purification device 32, and then bends to the rear side. In other words, the tail pipe 53 bends to the threshing device 5 side (left side) in the left-right direction of the machine body and is connected to the exhaust port 32a of the exhaust purification device 32. The tail pipe 53 has an upward extending portion 53a extending diagonally upward from the exhaust port 32a of the exhaust purification device 32 toward the grain storage tank 10 side (right side), and an upper end portion of the upward extending portion 53a. A rearward extending portion 53b that extends rearward is provided. The bent portion (connecting portion between the upward extending portion 53a and the backward extending portion 53b) in the tail pipe 53 is located above the upper plate 25 of the side panel 18.

An opening 18c through which the tail pipe 53 (upward extending portion 53a) is passed is formed in the rear portion of the upper plate 25 of the side panel 18. The tail tube 53 extends from the lower side to the upper side of the upper plate 25 of the side panel 18 through the opening 18c. The opening 18c is located behind the backrest of the driver's seat 16.

[First exhaust pipe member]
A diameter-expanded portion 55a having a larger diameter toward the front end is formed at the front end portion of the first exhaust pipe member 55. At the rear end of the first exhaust pipe member 55, a bent portion 55b that bends downward is formed so that the inclination angle with respect to the horizontal plane becomes small. The rear end portion of the tail pipe 53 and the front end portion of the first exhaust pipe member 55 overlap each other with a gap. In the present embodiment, the front end portion of the first exhaust pipe member 55 overlaps with the rear end portion of the tail pipe 53 with a gap from the outside.

The first exhaust pipe member 55 is supported on the right side wall of the threshing device 5 via the first support member 58 and the second support member 59. The first support member 58 is provided over the front portion of the first exhaust pipe member 55 and the right side wall of the threshing device 5. The first support member 58 includes a stay 63 fixed to the right wall of the threshing device 5, and a base 64 that supports the first exhaust pipe member 55. The base 64 is fixed to the first exhaust pipe member 55, and is bolted from the rear in a state of being abutted to the stay 63 from the rear side.

The second support member 59 is provided over the rear portion of the first exhaust pipe member 55 and the right side wall of the threshing device 5. The second support member 59 has a stay 65 fixed to the right side wall of the threshing device 5 and horizontally projecting from the right side wall of the threshing device 5, and is erected on the stay 65 to support the first exhaust pipe member 55. The base 66 and the base 66 are provided. The base 66 is fixed to the first exhaust pipe member 55, and is bolted from below in a state of being erected on the stay 65.

[Second exhaust pipe member]
The second exhaust pipe member 56 is composed of a straight pipe. The rear end portion of the first exhaust pipe member 55 and the front end portion of the second exhaust pipe member 56 overlap each other with a gap. In the present embodiment, the front end portion of the second exhaust pipe member 56 overlaps with the rear end portion of the first exhaust pipe member 55 with a gap from the outside.

The second exhaust pipe member 56 is supported on the right side wall of the threshing device 5 via the third support member 60 and the fourth support member 61. The third support member 60 is provided over the front portion of the second exhaust pipe member 56 and the right side wall of the threshing device 5. The third support member 60 has a stay 67 fixed to the right side wall of the threshing device 5 and horizontally projecting from the right side wall of the threshing device 5, and is erected on the stay 67 to support the second exhaust pipe member 56. The base 68 and the base 68 are provided. The base 68 is fixed to the second exhaust pipe member 56, and is bolted from below in a state of being erected on the stay 67.

The fourth support member 61 is provided over the rear portion of the second exhaust pipe member 56 and the right side wall of the threshing device 5. The fourth support member 61 has a stay 69 fixed to the right wall of the threshing device 5 and projecting horizontally from the right wall of the threshing device 5, and a stay 69 erected on the stay 69 to support the second exhaust pipe member 56. The base 70 and the base 70 are provided. The base 70 is fixed to the second exhaust pipe member 56, and is bolted from below in a state of being erected on the stay 69.

[Third exhaust pipe member]
The third exhaust pipe member 57 is composed of a straight pipe. The rear end portion of the second exhaust pipe member 56 and the front end portion of the third exhaust pipe member 57 overlap each other with a gap. In the present embodiment, the front end portion of the third exhaust pipe member 57 overlaps with the rear end portion of the second exhaust pipe member 56 with a gap from the outside. The third exhaust pipe member 57 is provided with a wind direction plate 71 for setting the wind direction of the exhaust in a state of being inclined backward.

The third exhaust pipe member 57 is supported on the right side wall of the threshing device 5 via the fifth support member 62. The fifth support member 62 is provided over the rear portion of the third exhaust pipe member 57 and the right side wall of the threshing device 5. The fifth support member 62 has a stay 72 that is fixed to the right side wall of the threshing device 5 and projects horizontally from the right side wall of the threshing device 5, and is erected on the stay 72 to support the third exhaust pipe member 57. The base 73 and the base 73 are provided. The base 73 is fixed to the third exhaust pipe member 57, and is bolted from above in a state of being erected on the stay 72.

[Exhaust pipe cover]
As shown in FIGS. 5 to 8, an exhaust pipe cover 74 that covers the exhaust pipe main body 54 from above is provided. The exhaust pipe cover 74 is located below the upper end of the grain storage tank 10 and below the lower end of the grain discharge device 11 (horizontal transport portion 13) at the storage position. The exhaust pipe cover 74 is supported by the exhaust pipe 36. A gap S is provided between the exhaust pipe cover 74 and the right side wall of the threshing device 5 over the entire front and rear of the exhaust pipe cover 74. As a result, straw debris and the like can be dropped from the gap S.

The exhaust pipe cover 74 is divided into a plurality of (three in this embodiment) cover bodies in the exhaust flow direction corresponding to the plurality of exhaust pipe members. In the present embodiment, the exhaust pipe cover 74 is divided into a first cover body 75, a second cover body 76, and a third cover body 77 in the exhaust flow direction from the exhaust upstream side. The first cover body 75, the second cover body 76, and the third cover body 77 extend rearward to a position above the threshing device 5.

[First cover body]
The first cover body 75 is a portion of the exhaust pipe cover 74 corresponding to the first exhaust pipe member 55. The pin 47 is covered by the first cover body 75. The first cover body 75 is formed in a shape that opens downward in a cross-sectional view. The first cover body 75 is provided with a first left half portion 78, a first right half portion 79, and a side plate 80. The first right half 79 covers the first left half 78 from above. An inclined portion 78a inclined toward the threshing device 5 side downward (leftward downward) is formed on the upper portion of the first left half portion 78. At the upper part of the first right half portion 79, an inclined portion 79a that is inclined downward toward the grain storage tank 10 side (downward to the right side) is formed. An opening 79b that opens downward is formed on the right side of the first right half portion 79 (see FIG. 11).

The side plate 80 is bolted from the right to the right side surface of the first right half portion 79 so as to cover the opening 79b. An opening 80a that opens downward is formed in a portion of the side plate 80 that corresponds to the position holding mechanism 46. As a result, the hook 48 enters the opening 80a and can be engaged with the pin 47.

The first cover body 75 is supported by the first exhaust pipe member 55 via the upper stay 81, the horizontal stay 82, the front lower stay 83, and the rear lower stay 84. The first cover body 75 is bolted to the upper stay 81, the horizontal stay 82, the front lower stay 83, and the rear lower stay 84. The upper stay 81 is fixed to the upper part of the first exhaust pipe member 55. The left lateral stay 82 is fixed to the left side portion of the first exhaust pipe member 55. The right side stay 82 is fixed to the right side of the first exhaust pipe member 55. The front lower stay 83 is fixed to the base 64 (first support member 58). The rear lower stay 84 is fixed to the base 66 (second support member 59).

[Second cover body]
The second cover body 76 is a portion of the exhaust pipe cover 74 corresponding to the second exhaust pipe member 56. The second cover body 76 is formed in a shape that opens downward in a cross-sectional view. The second cover body 76 is provided with a second left half portion 85 and a second right half portion 86. The second right half 86 covers the second left half 85 from above. An inclined portion 85a inclined toward the threshing device 5 side downward (leftward downward) is formed on the upper portion of the second left half portion 85. At the upper part of the second right half portion 86, an inclined portion 86a that is inclined downward toward the grain storage tank 10 side (downward to the right side) is formed. The rear end portion of the first cover body 75 and the front end portion of the second cover body 76 overlap each other with a gap. In the present embodiment, the front end portion of the second cover body 76 overlaps with the rear end portion of the first cover body 75 with a gap from the outside. The position where the rear end portion of the first cover body 75 and the front end portion of the second cover body 76 overlap each other and the rear of the first exhaust pipe member 55 so that straw debris and the like are hard to enter and hot air is hard to leak to the outside. The labyrinth structure is formed by shifting the position where the end portion and the front end portion of the second exhaust pipe member 56 overlap each other back and forth.

The second cover body 76 is supported by the second exhaust pipe member 56 via the upper stay 87, the horizontal stay 88, the front lower stay 89, and the rear lower stay 90. The second cover body 76 is bolted to the upper stay 87, the horizontal stay 88, the front lower stay 89, and the rear lower stay 90. The upper stay 87 is fixed to the upper part of the second exhaust pipe member 56. The left lateral stay 88 is fixed to the left side portion of the second exhaust pipe member 56. The horizontal stay 88 on the right side is fixed to the right side portion of the second exhaust pipe member 56. The front lower stay 89 is fixed to the base 68 (third support member 60). The rear lower stay 90 is fixed to the base 70 (fourth support member 61).

[Third cover body]
The third cover body 77 is a portion of the exhaust pipe cover 74 corresponding to the third exhaust pipe member 57. The third cover body 77 is formed in a shape that opens downward in a cross-sectional view. The third cover body 77 is provided with a third left half portion 91 and a third right half portion 92. The third right half portion 92 covers the third left half portion 91 from above. At the upper part of the third left half portion 91, an inclined portion 91a that is inclined toward the threshing device 5 side downward (leftward downward) is formed. At the upper part of the third right half portion 92, an inclined portion 92a that is inclined downward toward the grain storage tank 10 side (downward to the right side) is formed. The rear end portion of the second cover body 76 and the front end portion of the third cover body 77 overlap each other with a gap. In the present embodiment, the front end portion of the third cover body 77 overlaps with the rear end portion of the second cover body 76 with a gap from the outside. The position where the rear end portion of the second cover body 76 and the front end portion of the third cover body 77 overlap each other and the rear of the second exhaust pipe member 56 so that straw dust and the like do not easily enter and hot air does not easily leak to the outside. The labyrinth structure is formed by shifting the position where the end portion and the front end portion of the third exhaust pipe member 57 overlap each other back and forth.

The third cover body 77 is supported by the third exhaust pipe member 57 via the upper stay 93 and the horizontal stay 94. The third cover body 77 is bolted to the upper stay 93 and the horizontal stay 94, and is bolted to both left and right sides of the base 73 (fifth support member 62). The upper stay 93 is fixed to the upper part of the third exhaust pipe member 57. The left lateral stay 94 is fixed to the left side portion of the third exhaust pipe member 57. The horizontal stay 94 on the right side is fixed to the right side portion of the third exhaust pipe member 57.

〔cover〕
A cover 95 is provided that covers the tail pipe 53, the front portion of the first exhaust pipe member 55, and the opening 18c from above. The cover 95 is bolted to the upper plate 25 or the like of the side panel 18. The front end portion of the first cover body 75 is inserted into the inside of the cover 95 from the rear.

[How to assemble the exhaust pipe unit]
A unit (hereinafter referred to as "first exhaust pipe unit") is configured with the first cover body 75 assembled to the first exhaust pipe member 55, and the second cover body 76 is assembled to the second exhaust pipe member 56. The unit (hereinafter referred to as "second exhaust pipe unit") is configured in this state, and the unit (hereinafter referred to as "third exhaust pipe unit") is in a state where the third cover body 77 is assembled to the third exhaust pipe member 57. ) Will be configured. In the present embodiment, the first exhaust pipe unit, the second exhaust pipe unit, and the third exhaust pipe unit are assembled to the right wall of the threshing device 5 by the following procedure.

More specifically, first, the third exhaust pipe unit is assembled to the right wall of the threshing device 5 via the fifth support member 62. Next, the second exhaust pipe unit is assembled to the right side wall of the threshing device 5 via the third support member 60 and the fourth support member 61. At that time, the rear end portion of the second cover body 76 is inserted into the front end portion of the third cover body 77, and the rear end portion of the second exhaust pipe member 56 is inserted into the front end portion of the third exhaust pipe member 57. do.

Finally, the first exhaust pipe unit is assembled to the right wall of the threshing device 5 via the first support member 58 and the second support member 59. At that time, the rear end portion of the first cover body 75 is inserted into the front end portion of the second cover body 76, and the rear end portion of the first exhaust pipe member 55 is inserted into the front end portion of the second exhaust pipe member 56. do.

Here, it is preferable to assemble the first exhaust pipe unit in a state where the side plate 80 is not attached. This makes it easy to visually recognize the positions of the centers of the pipes when the first exhaust pipe member 55 is inserted into the second exhaust pipe member 56.

[Another Embodiment]
(1) In the above embodiment, the exhaust pipe 36 is located on the front side of the wall insert 44 and on the upper side of the threshing device 5. However, the exhaust pipe 36 does not have to be located above the threshing device 5 at a position in front of the wall insert 44. In this case, the exhaust pipe 36 may be located above the threshing device 5 at a position behind the wall insert 44. Alternatively, the exhaust pipe 36 may be located above the threshing device 5 in the front-rear position corresponding to the wall insert 44.

(2) In the above embodiment, the exhaust pipe 36 is located below the upper end of the grain storage tank 10. However, the exhaust pipe 36 may be located above the upper end of the grain storage tank 10.

(3) In the above embodiment, the exhaust pipe 36 is located below the lower end of the grain discharge device 11 (horizontal transport unit 13) at the storage position. However, the exhaust pipe 36 may be located above the lower end of the grain discharge device 11 (horizontal transport portion 13) at the storage position.

(4) In the above embodiment, the exhaust pipe 36 extends upward from the exhaust port 32a of the exhaust purification device 32, and then extends rearward in a state of being inclined backward. However, the exhaust pipe 36 may extend rearward from the exhaust port 32a of the exhaust purification device 32 in a state of being inclined backward.

(5) In the above embodiment, the exhaust pipe cover 74 is supported by the exhaust pipe 36. However, the exhaust pipe cover 74 may be supported by the threshing device 5 in addition to the exhaust pipe 36.

(6) In the above embodiment, the exhaust pipe cover 74 has inclined portions 78a, 85a, 91a that incline toward the threshing device 5 side down (left side down) and inclined portions that incline toward the grain storage tank 10 side down (right side down). 79a, 86a, 92a are provided. However, the exhaust pipe cover 74 may be provided with only the inclined portions 78a, 85a, 91a that incline toward the threshing device 5 side downward (leftward downward). Alternatively, the exhaust pipe cover 74 may be provided with only the inclined portions 79a, 86a, 92a that incline toward the grain storage tank 10 side downward (downward to the right side).

(7) In the above embodiment, the exhaust pipe main body 54 is divided into a first exhaust pipe member 55, a second exhaust pipe member 56, and a third exhaust pipe member 57 in the exhaust flow direction. However, the exhaust pipe main body 54 may be divided into two or four or more exhaust pipe members in the exhaust flow direction. Alternatively, the exhaust pipe body 54 may not be divided.

(8) In the above embodiment, the exhaust pipe cover 74 is divided into a first cover body 75, a second cover body 76, and a third cover body 77 in the exhaust flow direction corresponding to a plurality of exhaust pipe members. However, the exhaust pipe cover 74 may be divided into two or four or more exhaust pipe members in the exhaust flow direction corresponding to the plurality of exhaust pipe members. Alternatively, the exhaust pipe cover 74 may be divided into a plurality of covers different from the plurality of exhaust pipe members in the exhaust flow direction. Alternatively, the exhaust pipe cover 74 may not be divided.

(9) In the above embodiment, the front end portion of the second exhaust pipe member 56 overlaps with the rear end portion of the first exhaust pipe member 55 with a gap from the outside, and the front end portion of the third exhaust pipe member 57. Are overlapped with each other with a gap from the outside with respect to the rear end portion of the second exhaust pipe member 56. However, the rear end portion of the first exhaust pipe member 55 may overlap with the front end portion of the second exhaust pipe member 56 with a gap from the outside, and the rear end portion of the second exhaust pipe member 56 may overlap. (3) The exhaust pipe member 57 may overlap with each other with a gap from the outside with respect to the front end portion.

(10) In the above embodiment, the front end portion of the second cover body 76 overlaps with the rear end portion of the first cover body 75 with a gap from the outside, and the front end portion of the third cover body 77 is the second. It overlaps with the rear end portion of the cover body 76 with a gap from the outside. However, the rear end portion of the first cover body 75 may overlap with the front end portion of the second cover body 76 with a gap from the outside, and the rear end portion of the second cover body 76 may overlap with the front end portion of the second cover body 76. It may overlap with the front end portion of 77 with a gap from the outside.

(11) In the above embodiment, the inclination angle α1 of the second exhaust pipe member 56 with respect to the horizontal plane and the inclination angle α1 of the third exhaust pipe member 57 with respect to the horizontal plane are smaller than the inclination angle α2 of the first exhaust pipe member 55 with respect to the horizontal plane. Moreover, the inclination angle α1 of the second exhaust pipe member 56 with respect to the horizontal plane and the inclination angle α1 of the third exhaust pipe member 57 with respect to the horizontal plane are the same. However, the inclination angle of the third exhaust pipe member 57 with respect to the horizontal plane may be smaller than the inclination angle of the second exhaust pipe member 56 with respect to the horizontal plane. That is, among the first exhaust pipe member 55, the second exhaust pipe member 56, and the third exhaust pipe member 57, the third exhaust pipe member 57 located on the exhaust downstream side may have a smaller inclination angle with respect to the horizontal plane. Alternatively, the inclination angle of the first exhaust pipe member 55 with respect to the horizontal plane, the inclination angle of the second exhaust pipe member 56 with respect to the horizontal plane, and the inclination angle of the third exhaust pipe member 57 with respect to the horizontal plane may be the same.

(12) In the above embodiment, the exhaust pipe cover 74 is located below the upper end of the grain storage tank 10. However, the exhaust pipe cover 74 may be located above the upper end of the grain storage tank 10.

(13) In the above embodiment, the exhaust pipe cover 74 is located below the lower end of the grain discharge device 11 (horizontal transport portion 13) at the storage position. However, the exhaust pipe cover 74 may be located above the lower end of the grain discharge device 11 (horizontal transport portion 13) at the storage position.

(14) In the above embodiment, the opening 18c is formed at the rear portion of the upper plate 25 of the side panel 18. However, the opening 18c may be formed at the rear portion of the top plate 39 of the engine bonnet 38.

(15) In the above embodiment, the air cleaner 19 is arranged diagonally in a plan view so as to be located on the front side toward the right end thereof. However, the air cleaner 19 may be arranged diagonally in a plan view so as to be located on the front side toward the left end portion thereof. Alternatively, the air cleaner 19 may be arranged laterally in a plan view.

(16) In the above embodiment, the front end portion of the first cover body 75 is inserted into the inside of the cover 95 from the rear. However, the rear end portion of the cover 95 may be inserted inside the first cover body 75.

(17) In the above embodiment, the left-right range of the threshing device 5 and the left-right range of the side panel 18 overlap. However, the left-right range of the threshing device 5 and the left-right range of the side panel 18 do not have to overlap.

(18) In the above embodiment, the tail pipe 53 extends diagonally upward (diagonally upward to the right) on the grain storage tank 10 side (right side) in the left-right direction of the machine from the upper part of the outer circumference of the exhaust purification device 32. It is bent to the back side. However, the tail pipe 53 may extend from the upper part of the outer circumference of the exhaust gas purification device 32 toward the side of the grain storage tank 10 side (right side) in the left-right direction of the machine, and then bend to the rear side.

(19) In the above embodiment, the exhaust gas purification device 32 is provided below the side panel 18. However, the exhaust purification device 32 may be provided below the engine bonnet 38 (top plate 39).

The present invention can be used not only for head-feeding combine harvesters but also for ordinary-type combine harvesters.

4 Operation unit 5 Threshing device 10 Grain storage tank (grain storage unit)
11 Grain discharge device 32 Exhaust purification device 32a Exhaust port 36 Exhaust pipe 44 Wall insert 74 Exhaust pipe cover 78a Inclined part 79a Inclined part 85a Inclined part 86a Inclined part 91a Inclined part 92a Inclined part E engine
Y1 axis
Z1 axis

Claims (9)

A threshing device that has a threshing machine that can rotate around the axis extending in the front-rear direction of the machine and threshs the harvested culm.
A grain storage unit provided side by side with the threshing device to store the grains after the threshing process,
An exhaust purification device installed above the engine that purifies the exhaust of the engine,
An exhaust pipe that is passed between the threshing device and the grain storage portion in a plan view and exhausts the exhaust gas after the purification treatment by the exhaust purification device is provided.
The exhaust pipe extends back and forth between a position corresponding to the front part of the threshing device and a position corresponding to the rear part of the threshing device, and a position corresponding to the front part of the threshing device and the threshing device. Located above the axis over the position corresponding to the rear of the device ,
The front end portion of the exhaust pipe is a combine that is connected to the exhaust purification device in a state of overlapping with the exhaust purification device and the engine in a plan view . An operation unit provided in front of the grain storage unit is provided.
The combine according to claim 1, wherein the exhaust purifying device is provided in front of the threshing device and the grain storage section and below the operating section. The combine according to claim 2, wherein the left-right range of the threshing device and the left-right range of the exhaust purification device overlap. A wall insert for blowing a sorting wind is provided at the front of the threshing device.
The combine according to any one of claims 1 to 3, wherein the exhaust pipe is located above the threshing device at a position in front of the wall insert. The combine according to any one of claims 1 to 4, wherein the exhaust pipe is located below the upper end of the grain storage portion. It is configured to be swivelable around an axis extending in the vertical direction, and is equipped with a grain discharge device that discharges grains in the grain storage section to the outside.
The grain discharging device is configured to be able to be stored in a storage position located next to the threshing device side with respect to the grain storage unit.
The combine according to claim 5, wherein the exhaust pipe is located below the lower end of the grain discharging device at the storage position. The combine according to any one of claims 1 to 6, wherein the exhaust pipe extends upward from the exhaust port of the exhaust purification device and then extends rearward in a state of being inclined backward. .. An exhaust pipe cover that covers the exhaust pipe from above is provided.
The combine according to any one of claims 1 to 7, wherein the exhaust pipe is supported by the threshing device, and the exhaust pipe cover is supported by the exhaust pipe. The combine according to claim 8, wherein the exhaust pipe cover is provided with at least one of an inclined portion inclined downward toward the threshing device and an inclined portion inclined downward toward the grain storage portion.

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