JP7433207B2 - combine - Google Patents

Description

The present invention relates to a combine harvester.

A combine harvester includes a reaping section that is installed at the front of the traveling machine body to reap crops in the field, a threshing device that threshes the crops harvested by the reaping section, and a threshing device that is installed side by side with the threshing device. Some are equipped with a grain tank to store the harvested grain. In this type of combine harvester, for example, as shown in Patent Document 1, an exhaust pipe for discharging engine exhaust gas is provided, and the exhaust pipe extends rearward through a space between a threshing device and a grain tank. There is something.

Japanese Patent Application Publication No. 2015-128414

As mentioned above, in the case where the space between the thresher and the grain tank is utilized as the space for installing the exhaust pipe, if the exhaust pipe is exposed upward, dust such as straw waste may fall on the exhaust pipe. easy.

The present invention aims to prevent dust from falling on the exhaust pipe while utilizing the space between the threshing device and the grain tank as a space for installing the exhaust pipe, and to make it easier to open and close the grain tank. We provide a combine that makes it possible.

The combine according to the invention comprises:
A reaping section provided at the front of the traveling machine body to reap crops in the field; a threshing device for threshing the crops harvested by the reaping section; a grain tank for storing grains, an engine, an exhaust pipe for discharging exhaust gas from the engine, and an ejector section for introducing outside air from the exhaust pipe into the exhaust pipe; includes a rising part raised to a height corresponding to the upper part of the threshing device at the front part of the exhaust pipe, and extending rearward from the rising part through a space between the threshing device and the grain tank. a front cover that covers the rising portion; and an upper cover that covers the rearward extending portion from above; the front cover is provided separately from the upper cover; the upper cover is supported by the threshing device, the upper cover is divided into a front upper cover part and a rear upper cover part, the front upper cover part and the rear upper cover part are lined up in the front-rear direction, and the ejector part is located at a portion of the rearward extending part that is located below an intermediate part of the front upper cover part in the front- rear direction; A horizontal cover is connected to an end of the exhaust pipe on the threshing device side and covers a side of the exhaust pipe on the threshing device side .

According to this configuration, since the exhaust pipe is covered from above by the upper cover, the space between the threshing device and the grain tank can be used as a space for installing the exhaust pipe, and the upper cover prevents dust from falling on the exhaust pipe. This can be prevented by Since the upper cover is supported by the threshing device, when the grain tank is made openable and closable, the upper cover does not move along with the grain tank, making it easier to open and close the grain tank.
According to this configuration, the ejector section can be cleaned even if the rear upper cover section remains attached, making it easy to perform maintenance work on the ejector section.
According to this configuration, since the upper cover can prevent dust from falling into the ejector section, it is possible to prevent dust from being introduced into the exhaust pipe together with air by the ejector section. The horizontal cover can prevent dust from entering the exhaust pipe from the side of the threshing device.

In the present invention,
The threshing device includes a threshing main body and a top plate portion that covers the threshing main body from above, and the exhaust pipe is arranged between the threshing device and the grain tank at a position higher than the threshing main body. Preferably, it is passed through a space.

According to this configuration, the exhaust pipe passes through a position in the space between the threshing device and the grain tank where the heat radiated from the exhaust pipe can easily escape upward, so the exhaust pipe can be cooled easily .

In the present invention,
Preferably, the horizontal cover is inclined downward toward the side of the threshing device.

According to this configuration, the dust caught by the horizontal cover slides down to the threshing device side along the horizontal cover, so it is easy to prevent the dust from entering the exhaust pipe side.

In the present invention,
Preferably, a stay is provided that receives and supports the exhaust pipe from below, and the upper cover and the stay are supported separately by the threshing device.

According to this configuration, the upper cover can be attached and removed while the exhaust pipe remains supported by the threshing device via the stay, so even if the upper cover is removed, the exhaust pipe can remain supported, making maintenance work on the exhaust pipe easier. Easy to do.

In the present invention,
Preferably, a support member is provided that stands up from the threshing device, the upper cover is supported by the support member, and the stay is supported by the support member.

According to this configuration, the upper cover and the stay are easier to install than when the upper cover and the stay are directly supported on the threshing device, so it is easier to support and cover the exhaust pipe.

In the present invention,
The threshing device includes a threshing main body and a top plate portion that covers the threshing main body from above, and the top cover and the exhaust pipe pass forward and backward through a position lower than the upper end of the top plate portion. Preferably, it extends.

According to this configuration, since the exhaust pipe passes back and forth through a portion of the space between the threshing device and the grain tank where the heat radiated from the exhaust pipe tends to escape upward, the exhaust pipe can be cooled easily.

It is a left side view showing the whole combine. It is a right side view showing the whole combine. It is a top view showing the whole combine. It is a rear view of a combine. FIG. 3 is a right side view showing the exhaust pipe and the cover. FIG. 3 is a right side view showing the support structure of the exhaust pipe. 6 is a cross-sectional view taken along line VII-VII in FIG. 5; FIG. FIG. 6 is a sectional view taken along line VIII-VIII in FIG. 5; FIG. 3 is a plan view showing an exhaust pipe and a cover. FIG. 3 is a left side view showing the support structure of the front cover, middle cover, and rear cover. FIG. 3 is a right side view showing the support structure of the middle cover and the rear cover. It is a perspective view which shows the 1st support member, the 2nd support member, the 3rd support member, the 1st stay, the 2nd stay, the 3rd stay, and the front cover, middle cover, and rear cover of a removed state. FIG. 3 is a perspective view showing the first support member, the second support member, the third support member, and the front cover, middle cover, and rear cover in a removed state.

EMBODIMENT OF THE INVENTION Hereinafter, embodiment which is an example of this invention is described based on drawing.
In the following explanation, regarding the traveling machine of the combine harvester, the direction of arrow F shown in Figs. 1, 2, and 3 will be referred to as "the front of the machine," and the direction of arrow B will be "rear of the machine," and the direction shown in Figs. The direction of arrow U shown in Figures 3 and 4 is referred to as ``upward fuselage'', the direction of arrow D as ``lower fuselage'', the direction of arrow L shown in Figures 3 and 4 as ``leftward'', and the direction of arrow R as ``rightward''. do.

[Overall configuration of combine harvester]
As shown in FIGS. 1, 2, 3, and 4, the combine includes a traveling body 2 supported by a pair of left and right crawler traveling devices 1. The traveling body 2 includes a body frame 3 configured by connecting a plurality of steel materials such as square pipe materials. The crawler traveling device 1 is provided at the lower part of the body frame 3. A driving section 4, a driving section 5, and a reaping conveyance section 6 are provided at the front of the traveling body 2. The driving section 4 and the driving section 5 are provided at a location on one lateral end side of the front part of the traveling machine body 2, and the reaping and conveying section 6 is provided at a location on the opposite side from the driving section side at the front part of the traveling machine body 2. ing. The driving section 4 is equipped with a driver's seat 7 and a sunshade 8 that covers the upper part of the boarding space. The driving unit 5 is equipped with an engine 9. The reaping transport section 6 includes a reaping section 6A provided at the front of the reaping transport section 6, and a feeder 10 extending rearward from the rear of the reaping section 6A. In the reaping section 6A, the tip side of crops such as rice and wheat in the field is raked backward by a rotating reel 11, and the roots of the raked crops are cut by a clipper-type reaping device 12 to harvest the crops. The harvested crops are transported laterally to a feeding point to the feeder 10 by a traversing auger 13. The feeder 10 receives crops from the transverse feed auger 13 and conveys the received crops rearward and upward. The feeder 10 is equipped with a dust evacuation device 10A that sucks and discharges dust such as cut straw mixed in the crops to be transported by using the blowing action of a rotating fan. The reaping and conveying section 6 is oscillated and raised and lowered between a lowering working state and an ascending non-working state by the telescopic operation of a lifting cylinder 14 connected to the lower part of the feeder 10. A threshing device 15 and a grain tank 16 are supported side by side at the rear of the body frame 3. The threshing device 15 is arranged behind the feeder 10. The grain tank 16 is arranged at the rear of the driving section 4. A threshing cover 17 is provided on the lateral outer side of the threshing device 15. The threshing cover 17 is configured to be divisible into a plurality of divided covers. A tank cover 18 is provided laterally and outwardly at the bottom of the grain tank 16. The threshing device 15 receives and threshes the crops from the feeder 10, and performs a sorting process to separate the grains obtained by the threshing process from dust such as cut straw. The threshing device 15 is configured as a whole-culm input type so that the entire harvested grain culm from the base to the tip is input into the handling chamber. The grain tank 16 collects and stores grains sorted by the threshing device 15. A grain discharge device 19 that discharges the grains stored in the grain tank 16 is connected to the rear part of the grain tank 16 . The grain tank 16 has an open position for maintenance in which it extends outward from the side of the traveling body 2 with the axis of the vertical conveyance part 19A provided in the grain discharge device 19 as a swinging fulcrum, and an open position for maintenance purposes. It is supported so that its posture can be changed between a closed position for working and a front-to-back position.

As shown in FIGS. 2 and 4, the lower portion of the grain tank 16 is provided with a lower narrowed portion whose width becomes narrower toward the bottom. A tool box 26 is provided in a space between the lower narrowed portion on the outer side of the fuselage and the tank cover 18. The tool box 26 is supported on the right inclined wall of the grain tank 16.

[Configuration of grain discharge device]
As shown in FIGS. 2 and 3, the grain discharging device 19 includes a vertical conveyance section 19A that is provided behind the grain tank 16 and extends in the vertical direction of the machine body, and a vertical conveyance section 19A that swings vertically from the upper end of the vertical conveyance section 19A. It has a movably extended horizontal conveyance section 19B. The lower part of the vertical conveyance section 19A and the rear lower part of the grain tank 16 are connected via a connection case 20. The vertical transport section 19A receives grains discharged from the grain tank 16 to the connection case 20, and transports the received grains. Ejection of grain from the grain tank 16 is effected by a bottom screw (not shown) provided in the bottom of the grain tank 16. The horizontal transport section 19B receives the grains lifted by the vertical transport section 19A, transports the received grains horizontally, and discharges them from the discharge tube 22 provided at the extending end of the horizontal transport section 19B.

As shown in FIGS. 1, 2, and 4, a turning drive mechanism 23 is connected to a midway point of the vertical conveyance section 19A. The swing drive mechanism 23 is covered by a cover 24. The horizontal conveyance section 19B is rotated about the axis of the vertical conveyance section 19A by rotating the vertical conveyance section 19A with respect to the connection case 20 by the rotation drive mechanism 23. As shown in FIGS. 2 and 3, a undulation cylinder 25 is connected to the base of the lateral conveyance section 19B. The horizontal conveyance section 19B is swung up and down relative to the vertical conveyance section 19A by the expansion and contraction operation of the undulation cylinder 25.

[Configuration of threshing device]
As shown in FIGS. 4 and 5, the threshing device 15 includes a threshing main body 15A and a top plate portion 15B that covers the threshing main body 15A from above. The threshing main body 15A includes a threshing frame constituted by left and right side walls 30 and the like. The threshing main body 15A is configured such that the upper end of the side wall 30 becomes the upper end T1 of the threshing main body 15A. As shown in FIGS. 3, 4, and 7, the top plate portion 15B includes a top plate main body 36 that is arc-shaped when viewed in the front-rear direction, a front wall plate 37 connected to the front end of the top plate main body 36, and a top plate main body 36. and a rear wall plate 38 connected to the rear end portion of 36.

The threshing device 15 includes a threshing section 31 formed across a threshing main body 15A and a top plate section 15B, and a sorting section 35 formed below the threshing section 31.

As shown in FIG. 7, the threshing section 31 includes a handling chamber 32, a handling cylinder 33 rotatably provided in the handling chamber 32, and a receiving net 34 provided below the handling cylinder 33. The handling chamber 32 is formed by left and right side walls 30, a top plate portion 15B, a receiving net 34, and the like. The handling chamber 32 and the handling cylinder 33 are not included in the threshing main body 15A.

The sorting section 35 is provided below the receiving net 34 so as to be movable by driving, and includes an oscillating sorting device (not shown) that receives and sieves the material leaked from the receiving net 34, and a oscillating sorting device (not shown) in front of the oscillating sorting device. A winnow (not shown) that is provided below and supplies sorting air to the oscillating sorting device, and a grain tank of the threshing device 15 that is provided below the oscillating sorting device and carries the No. 1 processed material obtained through the sorting process. A No. 1 screw 39 (see Fig. 5) is installed on the rear side of the No. 1 screw 39 to transport the No. 2 processed material obtained by the sorting process to the side of the grain tank side of the threshing device 15. It is equipped with a No. 2 screw 40 (see FIG. 5) that conveys the material to the outside.

As shown in FIGS. 4 and 5, a No. 2 reducing device 42 connected to a No. 2 screw 40 is provided between the threshing device 15 and the grain tank 16. The No. 2 reducing device 42 extends from the terminal end of the No. 2 screw 40 in an upwardly tilted posture, and the conveying terminal end of the No. 2 reducing device 42 opens toward the swing sorting device at the front of the threshing device 15. has been done. The No. 2 processed material discharged from the No. 2 screw 40 is returned by the No. 2 reducing device 42 to the front part of the swinging sorting device in the sorting section 35, and is reprocessed by the swinging sorting device so as to be made into single grains.

[Exhaust pipe configuration]
As shown in FIGS. 2 and 5, the engine 9 is provided in front of the grain tank 16. An exhaust muffler 45 connected to the exhaust section of the engine 9 is provided on the left side of the engine 9, and an exhaust pipe 46 is connected to a discharge pipe 45a provided at the rear of the exhaust muffler 45. Exhaust gas discharged from the engine 9 is introduced into an exhaust muffler 45 and subjected to noise reduction processing, and the treated exhaust gas is discharged to an exhaust pipe 46 and discharged to the outside of the traveling aircraft 2 through the exhaust pipe 46.

As shown in FIGS. 5, 6, and 9, the exhaust pipe 46 extends in the front-rear direction through the space between the threshing device 15 and the grain tank 16. In this embodiment, the exhaust pipe 46 extends in the front-rear direction through a position lower than the top plate portion 15B in the space between the threshing device 15 and the grain tank 16. Specifically, the exhaust pipe 46 has a height position corresponding to between the upper end T1 of the threshing body 15A and the upper end T2 of the top plate portion 15B in the space between the threshing device 15 and the grain tank 16. It extends in the front-back direction.

To be more specific, the exhaust pipe 46 is divided in the longitudinal direction into three parts: a first divided exhaust pipe 47, a second divided exhaust pipe 48, and a third divided exhaust pipe 49, as shown in FIGS.

As shown in FIGS. 5 and 6, the exhaust pipe 46 includes a rising part 50 rising from the discharge tube 45a at the front part of the exhaust pipe 46, and a rearward extending part 51 extending rearward from the rising part 50. It is equipped with.

The rising portion 50 is raised up to the top of the threshing device 15, as shown in FIGS. 5 and 6. In this embodiment, the rising portion 50 is raised to a higher position than the threshing body 15A in the threshing device 15. Specifically, the threshing main body 15A is configured such that the upper end of the side wall 30 becomes the upper end T1 of the threshing main body 15A. The rising portion 50 is raised to a position higher than the upper end T1. As shown in FIGS. 5, 6, and 8, the rising portion 50 is raised on the front side of the second reducing device 42, and overlaps with the second reducing device 42 when viewed in the longitudinal direction of the aircraft.

As shown in FIGS. 5, 6, 7, and 8, the rearward extending portion 51 connects the threshing device 15 to the grain at a height position corresponding to between the upper end T1 of the threshing main body 15A and the upper end T2 of the top plate portion 15B. It passes backward through the space between it and the grain tank 16.

As shown in FIGS. 7 and 9, a side wall 16a of the grain tank 16 on the side of the threshing device is provided with a bulging portion 52 that bulges toward the threshing device, thereby increasing the capacity of the grain tank 16. There is. The rearward extending portion 51 is passed above the bulging portion 52.

As shown in FIGS. 5 and 6, the upper end of the rising portion 50 is provided with a bent portion 50a bent backward, and the rising portion 50 is connected to the rearward extending portion 51 by the bent portion 50a. The rearward extending portion 51 includes a rearwardly rising inclined portion 51k extending rearward in a rearwardly rising inclined position from the bent portion 50a of the rising portion 50, and a horizontal portion 51s extending rearwardly in a horizontal position from the rearwardly rising inclined portion 51k. There is.

As shown in FIGS. 5 and 6, a first ejector section 53 is provided at the lower part of the rising section 50, through which air outside the exhaust pipe 46 is introduced into the inside of the exhaust pipe 46. Specifically, as shown in FIG. 6, the first ejector 53 includes a connecting portion 54 at the bottom of the rising portion 50 that fits externally and connects to the discharge tube 45a of the exhaust muffler 45. A gap is provided between the exhaust pipe 46 and the discharge pipe 45a to allow air to flow from the outside to the inside of the exhaust pipe 46.

As shown in FIGS. 5 and 6, outside air from the exhaust pipe 46 is introduced into the exhaust pipe 46 at a portion of the exhaust pipe 46 located on the rear side of the front cover 71 that covers the rising portion 50. 2 ejector sections 55 are provided. As shown in FIG. 6, the second ejector portion 55 is provided at the rearwardly rising inclined portion 51k of the backwardly extending portion 51. Specifically, the rear upwardly inclined portion 51k is formed across the first divided exhaust pipe 47 and the second divided exhaust pipe 48.
The second ejector part 55 includes a connecting part 56 at the upstream end of the second divided exhaust pipe 48 that fits externally and connects to the end of the first divided exhaust pipe 47 on the opposite side from the exhaust muffler side. , a gap is provided between the connecting portion 56 and the end of the first divided exhaust pipe 47 to allow air to flow from the outside to the inside of the exhaust pipe 46.

As shown in FIGS. 5 and 6, the rear end portion 57 of the exhaust pipe 46 is bent upward, and an exhaust port 58 located higher than the top plate portion 15B is opened at the rear end portion 57. Specifically, the rear end portion 57 is configured such that the upper portion of the exhaust port 58 is located at a higher position than the upper end T2 of the top plate portion 15B. The exhaust port 58 is opened rearward and upward. The exhaust port 58 is located on the rear side of the rear end of the threshing device 15 and the rear end of the grain tank 16.

[Exhaust pipe support]
As shown in FIGS. 5 and 6, the exhaust pipe 46 includes a first stay 61 that supports one location of the rising portion 50, a second stay 62 that supports two locations on the front and back of the rear rising inclined portion 51k, and a horizontal portion. It is configured to be supported by the threshing device 15 via a third stay 63 that supports three locations at the front and rear of 51s.

Specifically, the first stay 61 is configured to be connected to the rear portion of the rising portion 50, as shown in FIG. The first stay 61 is configured to be directly connected to the right side wall 30 of the threshing device 15. The first stay 61 is connected to the exhaust pipe 46 by welding. The first stay 61 is connected to the side wall 30 by a connecting bolt.

As shown in FIGS. 5 and 6, the second stays 62 at two locations and the third stays 63 at three locations are connected to the lower part of the exhaust pipe 46 so as to receive and support the exhaust pipe 46 from below. It is configured. Connection of each second stay 62 and each third stay 63 to the exhaust pipe 46 is performed by welding.

The front second stay 62 of the two second stays 62 is configured to be directly connected to the right side wall 30 of the threshing device 15, as shown in FIGS. 5 and 6. The rear second stay 62 of the two second stays 62 and the frontmost third stay 63 of the three third stays 63 are located at the front and rear sides of the upper part 30a of the right side wall 30 of the threshing device 15. It is connected to the front first support member 64 of the first support members 64 erected at the location, and is configured to be connected to the right side wall 30 via the first support member 64. The second and third third stays 63 from the front among the three third stays 63 are connected to the rear first support member 64 of the two first support members 64 in the front and rear, and It is configured to be supported by the right side wall 30 via 64. The front second stay 62 is connected to the side wall 30 by a connecting bolt. The latter second stay 62 and three third stays 63 are connected to the first support member 64 by a connection bolt on the exhaust pipe side side 64a of the first support member 64.

[Configuration of exhaust pipe cover]
As shown in FIGS. 5 and 9, a cover 70 is provided to cover the exhaust pipe 46, and the cover 70 prevents dust such as straw waste from falling onto the exhaust pipe 46.

More specifically, as shown in FIGS. 5, 9, and 10, the cover 70 includes a front cover 71 that covers the rising portion 50 of the exhaust pipe 46, and a middle cover that covers the front portion of the rearwardly extending portion 51 of the exhaust pipe 46. 72, and a rear cover 73 that covers the rearward extending portion 51 on the rear side of the middle cover 72.

As shown in FIGS. 5, 9, 10, 12, and 13, the front cover 71 includes a front cover part 71a that covers the rising part 50 from the front, a left lateral cover part 71b that covers the rising part 50 from the left lateral side, and a rising part 71b. A right lateral cover part 71c that covers the part 50 from the right lateral side is provided. As shown in FIGS. 5 and 10, the lower part of the front cover part 71a is in a vertical position, and the upper part of the front cover part 71a is in an inclined position so that the upper side is located further back. The vertical length of the right horizontal cover portion 71c is longer than the vertical length of the left horizontal cover portion 71b.

The front cover 71 is configured to be supported by the threshing device 15. Specifically, as shown in FIGS. 12 and 13, the front cover 71 includes a first mounting part 71d formed at the upper part of the front cover part 71a, and a second mounting part 71d formed at the lower left side of the front cover part 71a. A mounting portion 71e is provided. As shown in FIGS. 12 and 13, a second support member 74 is erected from the upper part 30a of the right side wall 30 of the threshing device 15 on the front side of the first support members 64 at two locations, front and rear. As shown in FIGS. 9 and 10, the first attachment part 71d is configured to be placed on a front receiving part 74a formed on the upper part of the second support member 74 and connected with a connecting bolt. It is supported by the threshing device 15 via the support member 74. The second attachment portion 71e is configured to be directly connected to the right side wall 30 of the threshing device 15 with a connecting bolt. The front cover 71 is supported by the threshing device 15.

As shown in FIGS. 5, 12, and 13, the middle cover 72 and the rear cover 73 include an upper cover portion 75 that covers the backward extending portion 51 of the exhaust pipe 46 from above, and a portion of the upper cover portion 75 on the threshing device side. A left side cover part 76 is connected to the end of the exhaust pipe 46 and covers the side of the rearward extending part 51 on the threshing machine side, and a left side cover part 76 is connected to the end of the upper cover part 75 on the side opposite to the threshing machine side. , a right lateral cover part 77 that covers the side of the rearward extending part 51 of the exhaust pipe 46 on the grain tank side.

As shown in FIGS. 7 and 9, the left lateral cover portion 76 of the middle cover 72 and the left lateral cover portion 76 of the rear cover 73 are configured to be inclined downward toward the side of the threshing device.

The front-to-back length of the right lateral cover portion 77 in the middle cover 72 is shorter than the front-to-back length of the upper cover portion 75 (front upper cover portion) in the middle cover 72 . A right lateral cover portion 77 of the middle cover 72 extends downward from the front portion of the upper cover portion 75 . As shown in FIGS. 5, 9, and 10, the middle cover 72 covers the second ejector section 55 from above with an upper cover section 75, and covers the second ejector section 55 with a left lateral cover section 76 and a right lateral cover section 77. It is configured to cover from both sides. The middle cover 72 is configured to be located at a lower position than the upper end T2 of the top plate portion 15B.

The front-to-back length of the right lateral cover portion 77 of the rear cover 73 is shorter than the front-to-back length of the upper cover portion 75 (rear upper cover portion) of the rear cover 73. A right lateral cover portion 77 of the rear cover 73 extends downward from the rear portion of the upper cover portion 75. As shown in FIGS. 5, 9, and 10, the rear cover 73 covers the rear end 57 of the exhaust pipe 46 from above with an upper cover part 75, and covers the exhaust pipe 46 with a left lateral cover part 76 and a right lateral cover part 77. It is configured to cover the rear end portion 57 of the rear end portion 57 from both sides. Specifically, as shown in FIG. 5, the rear end 75a of the upper cover portion 75 of the rear cover 73 is bent upward along the rear end 57 of the exhaust pipe 46. The rear cover 73 is configured to be located at a lower position than the upper end T2 of the top plate portion 15B at a portion located in front of a portion covering the rear end portion 57 of the exhaust pipe 46.

The upper cover part 75, left lateral cover part 76, and right lateral cover part 77 of the middle cover 72 and the rear cover 73 are each configured to be supported by the threshing device 15. The upper cover part 75, the left lateral cover part 76, and the right lateral cover part 77 in the middle cover 72, and the second stay 62 and the third stay 63 that support the part of the exhaust pipe 46 covered by the middle cover 72. are configured to be supported by the threshing device 15 separately. Each of the upper cover part 75, left lateral cover part 76, and right lateral cover part 77 of the rear cover 73, and the third stay 63 that supports the part of the exhaust pipe 46 covered by the rear cover 73 are each provided with a separate threshing device. 15.

Specifically, as shown in FIGS. 12 and 13, the middle cover 72 has a first attachment part 78 formed at the front part of the upper cover part 75 and a second attachment part 78 formed at the rear part of the upper cover part 75. part 79, a third attachment part 80 formed between the first attachment part 78 and the second attachment part 79, a fourth attachment part 81 formed at the front lower part of the left lateral cover part 76, and a left lateral cover part 76. A fifth attachment part 82 is formed at the rear lower part, and a sixth attachment part 83 is formed between the fourth attachment part 81 and the fifth attachment part 82.

As shown in FIGS. 12 and 13, the rear cover 73 includes a first attachment portion 85 formed at the front of the upper cover portion 75, and a first attachment portion 85 formed on the upper cover portion 75 on the rear side of the first attachment portion 85. A second attachment part 86 , a third attachment part 87 formed on the front lower part of the left lateral cover part 76 , a fourth attachment part 88 formed in the left lateral cover part 76 on the rear side of the third attachment part 87 , a third attachment part 87 formed on the front lower part of the left lateral cover part 76 A fifth attachment part 89 is provided at the lower part of the left lateral cover part 76 on the rear side of the fourth attachment part 88 .

As shown in FIGS. 12 and 13, on the rear side of the second support member 74, a third support member 90 is erected from two places in the front and back of the upper part 30a of the right side wall 30 of the threshing device 15. The front third support member 90 of the two front and rear third support members 90 is located on the lateral side of the front first support member 64 of the two front and rear first support members 64. The rear third support member 90 of the two front and rear third support members 90 is located on the lateral side of the rear first support member 64 of the two front and rear first support members 64.

As shown in FIGS. 5, 8, 9, 10, and 11, in the inner cover 72, the first mounting part 78 is mounted on a rear receiving part 74b formed on the upper part of the second support member 74, and the connecting bolt is mounted on the rear receiving part 74b. The second attachment part 79 is configured to be connected to the first attachment part 85 of the rear cover 73 from above by a connecting bolt, and the third attachment part 80 is configured to be connected to the first attachment part 85 on the rear cover 73 by a connecting bolt. The fourth attachment part 81 is configured to be stacked on top of the upper part of the front third support member 90 of the support members 90 and connected with a connecting bolt, and the fourth attachment part 81 is attached to the right side on the front side than the front first support member 64. The fifth attachment part 82 is configured to be placed on the upper part 30a of the side wall 30 and connected to the upper part 30a of the right side wall 30 by a connecting bolt between the front and rear first support members 64. The sixth attachment portion 83 is configured to be connected to the threshing device side side portion 64b of the front first support member 64 of the front and rear first support members 64 by a connecting bolt.

As shown in FIGS. 5, 8, 9, 10, and 11, in the rear cover 73, the second attachment part 86 is attached to the upper part of the rear third support member 90 of the front and rear third support members 90 from above. The third mounting portion 87 is configured to overlap and connect to the upper part 30a of the right side wall 30 from above between the front and rear first support members 64 using a connecting bolt. , the fourth attachment part 88 is configured to be connected to the side part 64b of the rear first support member 64 on the threshing device side by a connecting bolt, and the fifth attachment part 89 is , and is configured to be connected to the upper part 30a of the right side wall 30 by a connecting bolt on the rear side of the rear first support member 64.

[Another embodiment]
(1) In the embodiment described above, an example was shown in which the exhaust pipe 46 was composed of three divided exhaust pipes 47, 48, and 49, but the present invention is not limited to this. For example, it may be constructed of one undivided exhaust pipe, two, or four or more divided exhaust pipes.

(2) In the above-described embodiment, the cover for the rearward extending portion 51 is configured to be separable into the middle cover 72 and the rear cover 73, and the upper cover for the backward extending portion 51 is arranged so that the upper cover portion 75 of the middle cover 72 and an upper cover part 75 of the rear cover 73, and the lateral cover for the rearward extending part 51 is divided into a left lateral cover part 76 of the middle cover 72 and a left lateral cover part 76 of the rear cover 73. Although an example is shown in which the inner cover 72 and the rear cover 73 are configured as an integrated cover, the upper cover and the side cover are configured as an integrated upper cover and side cover that are not divided into front and rear parts. It may be something that has been done.

(3) In the above-described embodiment, an example was shown in which the rising portion 50 and the second reduction device 42 overlap when viewed in the longitudinal direction of the aircraft. .

(4) In the above-described embodiment, an example was shown in which the second ejector section 55 was provided, but the second ejector section 55 may not be provided.

(5) In the above-described embodiment, an example was shown in which the exhaust port 58 was provided at the upwardly bent rear end portion 57 of the exhaust pipe 46, but this is not a limitation. For example, the rear end portion 57 of the exhaust pipe 46 may be configured to be positioned in a horizontal position, and the exhaust port may open rearward at the rear end portion in the horizontal position.

(6) In the embodiment described above, an example was shown in which the bulging portion 52 was provided, but the bulging portion 52 may not be provided.

(7) In the embodiment described above, the exhaust pipe 46 is located at a height corresponding to the space between the threshing device 15 and the grain tank 16, between the upper end T1 of the threshing body 15A and the upper end T2 of the top plate portion 15B. Although an example of passing through a portion at a position is shown, the present invention is not limited to this. It may be passed through a position lower than the upper end T1 of the threshing body 15A.

(8) In the above-described embodiment, the left lateral cover part 76 is slanted downward from the threshing device, but it may not be slanted and may be in a vertical position.

(9) In the embodiment described above, an example was shown in which the support member 64 was provided, but the stays 62, 63 and cover 24 may be directly supported on the threshing device 15 without providing the support member 64. .

The present invention can be applied to a combine harvester that includes a reaping section provided at the front of a traveling machine, a threshing device and a grain tank provided side by side, and an engine.

2 Traveling machine body 6A Reaping section 9 Engine 15 Threshing device 15A Threshing body 15B Top plate section 16 Grain tank 46 Exhaust pipe 50 Rising section 51 Rearward extending section 55 Ejector section (second ejector)
62 Stay (2nd stay)
63 Stay (3rd stay)
64 Support member (first support member)
71 Front cover 76 Side cover (side cover part)

Claims (6)

a reaping section that is provided at the front of the traveling machine and reaps crops in the field;
a threshing device that threshes the crops harvested by the harvesting section;
a grain tank that is provided side by side with the threshing device and stores grains obtained by the threshing device;
engine and
an exhaust pipe for discharging exhaust gas from the engine;
an ejector unit that introduces outside air of the exhaust pipe into the inside of the exhaust pipe,
The exhaust pipe includes a rising part raised to a height corresponding to the upper part of the threshing device at the front part of the exhaust pipe, and a space between the threshing equipment and the grain tank from the rising part. and a rearwardly extending portion extending rearwardly;
A front cover that covers the rising portion and an upper cover that covers the rearward extending portion from above,
The front cover is provided separately from the upper cover,
The upper cover is supported by the threshing device,
The upper cover is divided into a front upper cover part and a rear upper cover part, and the front upper cover part and the rear upper cover part are lined up in the front-rear direction,
The ejector portion is located at a portion of the rearward extending portion that is located below an intermediate portion of the front upper cover portion in the front- rear direction ,
The combine harvester is provided with a horizontal cover connected to an end of the upper cover on the threshing device side and covering a side of the exhaust pipe on the threshing device side . The threshing device includes a threshing body and a top plate portion that covers the threshing body from above,
The combine harvester according to claim 1, wherein the exhaust pipe passes through a space between the threshing device and the grain tank at a position higher than the threshing body. The combine harvester according to claim 1 , wherein the horizontal cover is inclined downward toward the threshing device. A stay is provided that receives and supports the exhaust pipe from below,
The combine harvester according to any one of claims 1 to 3, wherein the upper cover and the stay are each supported by the threshing device. A support member erected from the threshing device is provided,
the upper cover is supported by the support member,
The combine harvester according to claim 4, wherein the stay is supported by the support member. The threshing device includes a threshing body and a top plate portion that covers the threshing body from above,
The combine harvester according to any one of claims 1 to 5, wherein the upper cover and the exhaust pipe extend back and forth through a position lower than the upper end of the top plate part.

Images