JP7273465B2 - combine - Google Patents

Description

The present invention relates to a combine provided with an exhaust gas purification device.

In the combine disclosed in Patent Document 1, a precleaner is arranged on the rear right side of the cabin, and an exhaust gas purification device is arranged on the rear left side of the cabin. Therefore, when performing maintenance such as cleaning, it is difficult to access them at the same time.

JP 2015-123050 A

SUMMARY OF THE INVENTION The present invention has been made in view of the above circumstances, and an object of the present invention is to provide a combine harvester capable of improving maintainability in the rear portion of the cabin.

The combine according to the present invention includes a grain tank provided behind a cabin, a threshing device provided adjacent to the grain tank on one side in the left and right direction, and a threshing device arranged on the one side in the left and right direction behind the cabin. and an exhaust gas purification device provided between the grain tank and the threshing device and arranged below the precleaner. According to this configuration, both the precleaner and the exhaust gas purifying device are arranged at the rear of the cabin on one side in the left-right direction, and are also arranged above and below, so that they can be easily accessed at the same time. As a result, the work can be performed efficiently without changing the working posture, and the maintainability of the rear portion of the cabin is improved.

An outside air introduction port for introducing outside air into an air conditioner provided in the cabin, and a collection filter attached to the outside air introduction port, wherein the outside air introduction port is located on one side in the left and right direction of the cabin. It is preferably formed on the wall. According to such a configuration, in addition to the precleaner and the exhaust gas purifying device, the collection filter attached to the outside air inlet can be easily accessed, thereby further improving maintainability.

A cover member that covers the exhaust gas purification device is provided, and the cover member includes a first opening provided on the front side of the exhaust gas purification device and a first opening provided on one side in the left-right direction of the exhaust gas purification device. 2 openings, and the first opening is formed smaller than the second opening. By covering with the cover member provided with the opening, overheating of the exhaust gas purification device can be suppressed while protecting it from dust. A worker normally accesses the exhaust gas purifying device from the front side (that is, the cabin side) and does not access from one side in the left and right direction (that is, the threshing device side), so the first opening is accessed from the second opening. Both safety and breathability can be achieved by forming the air gap to be small.

A grain lifting device disposed between the grain tank and the threshing device is connected to the threshing device via a connecting member, and the tail guides out of the machine the exhaust gas that has passed through the exhaust gas purification device. It is preferable that the rear end of the pipe is supported by the connecting member. As a result, the vibration of the threshing device is not directly transmitted to the tail pipe, so the tail pipe can be firmly supported. Moreover, by supporting the tail pipe with a connecting member instead of directly supporting it with the grain lifting device, there is no concern that the fixture used for the support will interfere with the conveyor built in the grain lifting device.

A bulging portion that bulges toward one side in the left-right direction is formed in the rear portion of the grain tank, and the rear end of the tail pipe that guides the exhaust gas that has passed through the exhaust gas purification device to the outside of the aircraft is the above-mentioned It is preferable that the threshing device is arranged rearward of the rear end of the grain lifting device arranged between the grain tank and the threshing device, and is arranged forward of the most expanded portion of the expanded portion. This is convenient for preventing the exhaust gas that has passed through the exhaust gas purification device from being blown against the grain raising device while improving the capacity of the grain tank.

Left side view of a combine harvester right side view of combine harvester Top view of a combine harvester Right rear perspective view of cabin Longitudinal sectional view showing a threshing device and a sorting device Plan view showing the periphery of the precleaner and the exhaust gas purifier Perspective view showing the periphery of the precleaner and the exhaust gas purification device Left front perspective view of the exhaust gas purification device Right rear perspective view of exhaust gas purification device Left rear perspective view of the exhaust gas purification device Schematic diagram showing part of the transmission structure of a combine harvester Right front perspective view showing the area around the engine Right rear perspective view showing the area around the engine

An example of the combine according to the present invention will be described.

[Overall structure of combine harvester]
First, I will briefly explain the overall structure of the combine. 1-3 respectively show the left side, right side and top view of the combine 100 of this embodiment. In the drawing, arrows indicate the front-back direction, left-right direction, and up-down direction of the combine 100 . The combine 100 includes a travel device 1 , a reaping device 2 , a threshing device 3 , a sorting device 4 , a storage device 5 and a power device 6 .

The travel device 1 is provided below the body frame 10 . The traveling device 1 has a transmission 11 and a pair of left and right crawler devices 12 . The transmission 11 transmits power of the power unit 6 mounted on the body frame 10 to the crawler device 12 . The crawler device 12 causes the combine harvester 100 to travel in the front-rear direction and the combine harvester 100 to turn in the left-right direction.

The harvesting device 2 is provided in front of the traveling device 1 . The harvesting device 2 has a reel 21 , a cutter (cutting blade) 22 , an auger (horizontal feed screw) 23 , and a transport conveyor 24 . The reel 21 guides the culms in the field to the cutter 22 by rotating. Cutter 22 cuts the culm guided by reel 21 . The auger 23 collects the culms cut by the cutter 22 at a predetermined position (the culm supply port of the conveyer 24). The transport conveyor 24 transports the culms collected by the auger 23 to the front rotor 33 (see FIG. 5) of the thresher 3 .

The threshing device 3 is arranged behind the harvesting device 2 and on one side in the left-right direction (the left side in this embodiment). The threshing device 3 has a threshing drum 31 and a receiving net 32 provided below the threshing drum 31 . The handling cylinder 31 is housed in a handling chamber 30 (see FIG. 5). The threshing drum 31 rotates to transport the culms rearward while threshing them. The receiving net 32 supports the grain culms conveyed by the threshing drum 31 and drops the threshed material to the sorting device 4 . Below the handling cylinder 31, a first conveyor 143 and a second conveyor 144 (see FIG. 5), which are screw conveyors for conveying grains, are provided. All of these convey the threshed material in the horizontal direction (horizontal direction).

The sorting device 4 is provided below the threshing device 3 . The sorting device 4 has an oscillating sorting device 41 that oscillates and sorts the threshed material leaked from the receiving net 32 by oscillating in the front-rear direction. The grains sorted by the swing sorting device 41 are conveyed by the first conveyor 143 , lifted upward by the bucket-type grain raising device 7 , and thrown into the inlet 153 of the grain tank 51 . The sorting device 4 also has a blower 42 that blows air toward the swing sorting device 41 . The air blower 42 blows off contaminants such as straw scraps contained in the threshed material. Contaminants such as straw scraps are discharged to the outside from a culm removal port 45 provided at the rear of the sorting device 4 .

The storage device 5 is arranged behind the harvesting device 2 and on the other side in the left-right direction (on the right side in this embodiment). The storage device 5 is provided adjacent to the threshing device 3 in the left-right direction. The storage device 5 includes a grain tank 51 for storing grains. The grain tank 51 stores grains transported from the sorting device 4 via the first conveyor 143 and the grain lifting device 7 . The grain raising device 7 is arranged between the threshing device 3 and the grain tank 51 . The grain tank 51 is rotatably supported with respect to the body frame 10 around a vertical axis 51p at its rear end. A discharge auger 52 is used to discharge the grains in the grain tank 51 . The discharge auger 52 is configured to be rotatable in the vertical and horizontal directions, and can discharge grains to an arbitrary location.

The power unit 6 is provided below the operation unit 13 and in front of the storage device 5 . The power plant 6 is composed of an engine 61 . The engine 61 of this embodiment is a diesel engine, and converts thermal energy obtained by burning fuel into kinetic energy. More specifically, the engine 61 converts thermal energy obtained by burning fuel into power for driving each part such as the traveling device 1 . The power unit 6 may include both an engine 61 and an electric motor that generates power by electricity.

The driving unit 13 is provided on the right front portion of the body frame 10 in front of the grain tank 51 . The operating section 13 is covered with a cabin 14, and a grain tank 51 is provided behind the cabin 14. - 特許庁Although not shown in the drawing, inside the cabin 14, a driver's seat in which an operator sits and a steering handle arranged in front of the driver's seat are installed. Various operating tools are arranged. As shown in FIG. 4 , an engine 61 is arranged below the operating section 13 .

Connected to the engine 61 are a precleaner 62 that filters the air supplied to the engine 61 and intakes the air, and an air cleaner 63 that removes impurities from the intake air. Both the precleaner 62 and the air cleaner 63 are located above the engine 61 . The precleaner 62 is arranged behind the cabin 14 and on one side in the left-right direction relative to the air cleaner 63 . Also, the air cleaner 63 is provided in a gap formed between the engine 61 and the rear portion of the cabin 14 so as to be biased toward the other side in the left-right direction. The precleaner 62 and the air cleaner 63 are connected via an intake pipe 69 . The upper end of the intake pipe 69 is connected to an opening provided in the lower portion of the precleaner 62, and the lower end of the intake pipe 69 is connected to an opening provided in the rear portion of the air cleaner 63 on one side in the left-right direction. .

[Threshing device]
Next, the threshing device 3 will be described. As shown in FIG. 5 , the threshing device 3 has a threshing chamber 30 , a threshing cylinder 31 , a receiving net 32 and a front rotor 33 . The handling room 30 is partitioned by a receiving net 32, a machine frame 300, and the like. The machine frame 300 includes an upper cover 301 arranged above the handling cylinder 31, a front wall member 302 arranged in front of the handling cylinder 31, and a rear wall member 303 arranged behind the handling cylinder 31. installed. The culms conveyed by the conveyer 24 are sent into the handling chamber 30 by the front rotor 33 . The front rotor 33 not only transports the culms, but also has the function of performing preliminary threshing (pre-threshing).

The handling cylinder 31 has a handling cylinder shaft 311 extending along the front-rear direction, a raking screw 312 , and a tooth bar (teeth supporting member) 313 . The handling cylinder 31 rotates around a handling cylinder shaft 311 . The handling cylinder shaft 311 is rotatably supported by the front wall member 302 and the rear wall member 303 . Rotational power from the engine 61 is transmitted to the handling cylinder shaft 311 . The handling cylinder shaft 311 is a structure formed in a straight line, and supports the raking screw 312 and the plurality of tooth bars 313 .

The raking screw 312 is arranged in the front part of the handling cylinder 31 . The rake screw 312 is a structure in which a spiral impeller (rake blade) 312b is detachably formed. The raking screw 312 rakes the culms sent by the front rotor 33 . That is, the raking screw 312 rotates to take in the culms sent by the front rotor 33 and send them backward. The raking screw 312 is not limited to the structure in which the helical impeller 312b is formed, and may have a structure in which a plurality of blades are formed.

A plurality of tooth bars 313 are arranged behind the scraping screw 312 with the scraping cylinder shaft 311 as the center. The tooth bar 313 is a structure in which a plurality of treatment teeth 313t are arranged in parallel with each other at predetermined intervals. The tooth bar 313 threshes the culms sent out by the raking screw 312 . In other words, the tooth bar 313 rotates to knead the culms sent out by the raking screw 312 and hit them to drop the threshed grains. The tooth bar 313 is not limited to a structure having a plurality of serrations 313t, and may have a structure having a helical blade. In this embodiment, the inner space of the handling cylinder 31 and the outer space of the handling cylinder 31 are separated by a plurality of tooth bars 313 and a plurality of plate members 314 provided between the tooth bars 313 to form a cylindrical shape as a whole. However, instead of this, a structure in which a plurality of handling teeth 313t are provided on a cylindrical rotating body may be employed.

The receiving net 32 is provided along the lower outer peripheral surface of the handling cylinder 31 and is formed in a substantially U shape when viewed from the front-rear direction. In this embodiment, the receiving net 32 is arranged so as to cover the lower part of the rotating body composed of the plurality of tooth bars 313 . The receiving net 32 supports the culms that are rubbed by the tooth bars 313 . The receiving net 32 is mainly composed of a net body 321 . The net body 321 is a structure in which wires are stretched in parallel at predetermined intervals. The receiving net 32 allows the threshed product threshed by the threshing drum 31 to leak through the gaps of the net body 321 . Grain culms that have not leaked from the receiving net 32 are discharged from the rear end portion of the receiving net 32 as waste culms.

The grain raising device 7 is arranged behind the cabin 14 and between the threshing device 3 and the grain tank 51 . That is, the grain lifting device 7 is arranged on the right side of the threshing device 3 and is arranged on the left side of the grain tank 51 . The grain raising device 7 conveys the threshed processed material (first processed material) processed by the threshing device 3 to the grain tank 51 . As shown in FIG. 1, the grain-lifting device 7 includes a bucket conveyor 71 and a grain-lifting case 72 that accommodates the bucket conveyor 71 therein. The bucket conveyor 71 has a pair of sprockets 711 and 712 spaced apart in the vertical direction, an endless chain 713 wound between them, and a plurality of buckets 714 attached to the chain 713. have.

[Sorting device]
Next, the sorting device 4 will be described. As shown in FIG. 5 , the sorting device 4 includes a swing sorting device 41 and an air blower 42 . The swing sorting device 41 sorts the grains by sieving the threshed material. The blower 42 sorts out the grains by blowing off contaminants such as straw scraps contained in the threshed material.

The swing sorting device 41 has a feed pan 411 , a chaff sieve 412 and a straw rack 413 . A chaff sieve 412 is arranged at the lower rear portion of the feed pan 411 , and a straw rack 413 is arranged behind the chaff sieve 412 . The feed pan 411 is a wide, flattened structure. The feed pan 411 receives the threshed material dropped from the receiving net 32 . The feed pan 411 swings back and forth to move the threshed material on the feed pan 411 backward while leveling it. At this time, the threshed material is spread evenly in the left-right direction by the obliquely attached fins 411f.

The chaff sieve 412 has a plurality of sieve plates 412p arranged parallel to each other with a predetermined interval. The plurality of sheave plates 412p are arranged side by side in the front-rear direction while extending in the left-right direction. The angle of the sieve plate 412p can be adjusted according to the amount of threshed material. The chaff sieve 412 oscillates back and forth to sift the threshed material sent from the feed pan 411, lift up foreign matters mixed therein, and separate them from the grains. The threshed material selected by the chaff sieve 412 (the "most processed material" containing only grains) passes through the sieve net 416, is guided by the first grain plate 431, and falls into the first gutter 43. , is sent to the first conveyor 143 . The threshed material remaining on the chaff sieve 412 moves backward and is sent to the straw rack 413 .

The straw rack 413 has a plurality of rack plates 413p arranged parallel to each other with a predetermined interval. The straw rack 413 swings back and forth to sieve the threshed material sent from the chaff sieve 412, support relatively large contaminants mixed therein, and separate them from the grains. The threshed material selected by the straw rack 413 ("second processed material" consisting of grains and a small number of small impurities) is guided by the second grain plate 441 and falls into the second gutter 44. It is sent by the second conveyor 144 and returned to the front end side of the sorting device 4, where it is subjected to the sorting process again. The threshed material remaining on the straw rack 413 moves backward and is discharged to the outside.

The blower 42 is arranged below the front portion of the swing sorting device 41 and supplies sorting air toward the swing sorting device 41 . The blower 42 has a fan 421 and a fan case 422 . In this embodiment, a fan 421 is arranged below the feed pan 411 and a fan case 422 is arranged to cover the fan 421 . Fan 421 has a plurality of fan plates 421p attached at a predetermined angle. The fan 421 rotates and blows air to blow away the contaminants placed on the chaff sieve 412 and the straw rack 413 and the contaminants dropped from them. Fan case 422 is a structure formed by bending a plate material. The fan case 422 covers the fan 421 and guides the wind sent out by the fan 421 in a predetermined direction.

[Back part of the cabin]
As described above, the combine 100 of this embodiment includes the grain tank 51 provided behind the cabin 14, and the threshing provided adjacent to the grain tank 51 on one side in the left-right direction (left side in this embodiment). A device 3 and a precleaner 62 arranged behind the cabin 14 and on one side in the left-right direction. 6 and 7, the combine 100 is provided between the grain tank 51 and the threshing device 3 and provided with an exhaust gas cleaning device 9 arranged below the precleaner 62. As shown in FIGS. The exhaust gas purification device 9 is a filter that removes particulate matter in the exhaust gas discharged from the engine 61, and is also called DPF (Diesel Particulate Filter). It should be noted that the exhaust gas purifying device 9 may be configured to include an SCR (Selective Catalytic Reduction) instead of or in addition to the DPF. When both the DPF and the SCR are included in the exhaust gas purifying device 9, they can be arranged side by side with both directed in the front-rear direction, or arranged in parallel vertically, or arranged in series in the front-rear direction. can.

A left window 15 of the cabin 14 is supported to be vertically rotatable via a hinge 15a. By opening the left window 15 and leaning backward from the operation section 13, the operator can perform maintenance such as cleaning on the rear portion of the cabin 14. - 特許庁Both the precleaner 62 and the exhaust gas purifying device 9 are arranged behind the cabin 14 on one side in the left-right direction (that is, on the left side), and are also arranged above and below, so that they can be easily accessed at the same time. . Therefore, the work can be performed efficiently without changing the working posture, and the maintainability of the rear part of the cabin 14 is improved. In this embodiment, as shown in FIG. 6, the exhaust gas purifying device 9 is arranged immediately below the precleaner 62, and since they overlap each other in plan view, the effect of improving maintainability is large.

The combine 100 of the present embodiment includes an outside air introduction port 16w for introducing outside air into the air conditioner 16 provided in the cabin 14, and a collection filter 16f attached to the outside air introduction port 16w (see FIG. 7). ). The outside air introduction port 16w is formed in a wall portion 14L on one side in the left-right direction of the cabin 14, and is formed in an inclined surface 14a forming a rear portion of the wall portion 14L. Since the outside air introduction port 16w is provided on the same left side as the precleaner 62 and the exhaust gas purification device 9, the collection filter 16f attached to the outside air introduction port 16w can be easily accessed, further improving maintainability. . In this embodiment, since the precleaner 62 is arranged facing the outside air introduction port 16w, the effect of improving maintainability is large.

The air conditioner 16 is installed below an outer roof 14r that forms the upper outer surface of the cabin 14 . The collection filter 16f is a mesh member for collecting dust contained in the outside air introduced through the outside air introduction port 16w, and is made of punching metal, for example. The outside air introduction port 16w is covered with an introduction control plate 16p as shown in FIG. 4 (FIG. 7 shows a state in which the introduction control plate 16p is removed). The introduction amount control plate 16p is attached to (the inclined surface 14a of) the wall portion 14L so that a gap is provided above and below. Therefore, outside air can flow in through the upper and lower gaps, and clogging of the collection filter 16f can be suppressed while increasing the area of the outside air introduction port 16w.

As shown in FIG. 8, the exhaust gas purification device 9 is covered with a cover member 90 to protect the exhaust gas purification device 9 from dust. However, on the other hand, since there is concern about overheating of the exhaust gas purification device 9, an opening is provided on the side of the cover member 90 to ensure ventilation. In this embodiment, the cover member 90 includes a first opening 91 provided on the front side of the exhaust gas purification device 9 (that is, the cabin 14 side), and one side in the left and right direction of the exhaust gas purification device 9 (that is, the threshing device). 3 side), the former being smaller than the latter. A worker normally accesses the exhaust gas purifying device 9 from the cabin 14 side and does not access it from the threshing device 3 side, so that both safety and ventilation can be achieved.

The cover member 90 has an upper surface portion 90u arranged above the exhaust gas purification device 9, a front side surface portion 90f arranged in front, and a right side surface portion 90r (see FIG. 6) arranged on the right side. A large number of first openings 91 are formed in the front side portion 90f. Although the first opening 91 is formed only in a partial area of the front side surface portion 90f in FIG. 8, it is actually formed in substantially the entire area of the front side surface portion 90f. The first opening 91 is preferably a small hole having a size that does not allow a person's hand or finger to enter.

Further, as shown in FIG. 9, the cover member 90 has a third opening 93 provided on the other side in the left-right direction of the exhaust gas purifier 9 (that is, on the grain tank 51 side). The third opening 93 is formed smaller than the second opening 92 . Thereby, the grain tank 51 is turned laterally outward and rotated around the vertical axis 51p, and the safety in performing maintenance work by opening the right side of the threshing device 3 is enhanced. A large number of third openings 93 are formed in the right side surface portion 90 r of the cover member 90 . In FIG. 9, the third opening 93 is formed only in a partial area of the right side surface portion 90r, but in reality it is formed in substantially the entire area of the right side surface portion 90r. The third opening 93 is preferably a small hole having a size that does not allow a person's hand or finger to enter.

The cover member 90 does not have a side surface arranged on the left side of the exhaust gas purification device 9 , and the left side of the exhaust gas purification device 9 is entirely open through the second opening 92 . This allows for maximum ventilation and efficient heat dissipation. For the same reason, the cover member 90 does not have a side surface arranged behind the exhaust gas purifier 9, and the rear of the exhaust gas purifier 9 is entirely open (see FIGS. 9 and 10). ). However, it is not limited to this, and for example, it is also possible to arrange a side surface of the cover member 90 on the left side of the exhaust gas purification device 9 and form a second opening larger than the first opening 91 in that side surface.

The exhaust gas purification device 9 has a tail pipe 94 that guides the exhaust gas that has passed through the exhaust gas purification device 9 to the outside of the machine. As shown in FIG. 10 , the rear end portion 94 b of the tail pipe 94 is supported in a posture inclined to the left and configured to guide the exhaust gas upward of the threshing device 3 . Thereby, exhaust gas can be prevented from blowing to the grain raising device 7 while securing a vertical interval with the discharge auger 52 . The grain lifting device 7 arranged between the grain tank 51 and the threshing device 3 is connected to the threshing device 3 via a connecting member 78, and the rear end portion 94b of the tail pipe 94 is supported by the connecting member 78. ing. Furthermore, the rear end portion 94b of the tail pipe 94 is supported by the connecting member 78 via the support member 95.

The connecting member 78 is fixed to the threshing device 3 on one side in the left-right direction (that is, the left side) with a bolt 78b, and is welded to the grain-lifting case 72 on the other side in the left-right direction (that is, the right side). Since the rear end portion 94b of the tail pipe 94 is supported by the connecting member 78, the large vibration of the threshing device 3 caused by the rotation of the threshing cylinder 31 is not directly transmitted to the tail pipe 94, and the tail pipe 94 is strongly supported. Supportable. Moreover, by supporting the tail pipe 94 with the connecting member 78 instead of directly supporting it with the grain raising device 7 , the fixture (for example, bolt or nut) used for the support can be fixed to the bucket inside the grain raising case 72 . There is no fear of interfering with the conveyor 71.

As shown in FIG. 6, the rear portion of the grain tank 51 is formed with a bulging portion 51s that bulges toward one side in the left-right direction. For convenience of illustration, FIG. 10 shows the bulging portion 51s through. 51 s of bulging parts are arrange|positioned behind the grain lifting apparatus 7. As shown in FIG. Further, the rear end 94e of the tail pipe 94 is arranged behind the rear end 7e of the grain lifting device 7 and further forward than the most expanded portion 51e of the expanded portion 51s. This configuration is convenient for preventing the exhaust gas that has passed through the exhaust gas purification device 9 from being blown against the grain raising device 7 while improving the capacity of the grain tank 51 .

[Power transmission mechanism]
As shown in FIGS. 11 to 13, the combine 100 includes a power transmission mechanism 170 that transmits rotational power from the engine 61 to the drive shaft 17a of the compressor 17 of the air conditioner 16. As shown in FIGS. The power transmission mechanism 170 is a belt transmission mechanism that transmits rotational power via a transmission belt 170b. The transmission belt 170b is stretched over the output shaft 61a of the engine 61 and the drive shaft 17a of the compressor 17 . The tension roller 171 maintains the tension of the transmission belt 170b. A cooling fan 64 to which rotational power is transmitted via a belt 64b is arranged above the output shaft 61a.

The combine 100 further includes a power transmission mechanism 510 that transmits rotational power from the engine 61 to the lower conveyor shaft 53 of the grain tank 51 . The power transmission mechanism 510 is a belt transmission mechanism that transmits rotational power via a transmission belt 510b. The transmission belt 510b is stretched across the output shaft 61a of the engine 61 and the grain input shaft 511. As shown in FIG. Rotational power from the engine 61 is transmitted from the output shaft 61 a to the grain input shaft 511 via the transmission belt 510 b and then transmitted to the lower conveyor shaft 53 via the bevel gear mechanism 512 . The lower conveyor shaft 53 is a drive shaft of a transverse auger 57 that horizontally conveys grains in the grain tank 51 .

The rear end of the lower conveyor shaft 53 is interlocked with the lower end of the vertical conveyor shaft 54 via a bevel gear mechanism 513 . The upper end of the vertical conveyor shaft 54 is interlocked with the rear end of the horizontal conveyor shaft 55 via a chain transmission mechanism 514 , a bevel gear mechanism 515 , a chain transmission mechanism 516 and a bevel gear mechanism 517 . The vertical conveyor shaft 54 is the drive shaft of the vertical feed auger 58 that conveys the grains in the grain tank 51 upward, and the horizontal conveyor shaft 55 is the drive shaft of the discharge auger 52 .

As shown in FIGS. 12 and 13, the compressor 17 is supported behind the engine 61 by an engine lateral frame 65 extending in the left-right direction. The compressor 17 is supported by its upper and lower parts, the upper part of the compressor 17 is fixed to an upper fixing member 66 welded to the engine lateral frame 65, and the lower part of the compressor 17 is welded to the engine lateral frame 65. It is fixed to the lower fixing member 67 . A rear end portion 172a of the arm 172 supporting the tension roller 171 is supported by the upper fixed member 66 via a spring 173 and a bracket 174, and a pivot point 172b of the arm 172 is supported by the lower fixed member 67. .

A grain clutch 56 is provided between the output shaft 61 a of the engine 61 and the grain input shaft 511 . The operation unit 13 is provided with a grain clutch lever 18 for switching the grain clutch 56 (see FIG. 3). The grain clutch 56 has a tension pulley 561 acting on the transmission belt 510 b and an arm 562 supporting the tension pulley 561 . A wire 18 w connected to the grain clutch lever 18 is connected to the rear end portion 562 a of the arm 562 via a spring 563 . A pivot point 562 b of the arm 562 is supported by an engine vertical frame 68 that extends vertically on the right rear side of the engine 61 .

The power transmission mechanism 170 and the power transmission mechanism 510 take out rotational power from the same output shaft 61a, and the pulley 170p over which the transmission belt 170b is stretched is outside the pulley 510p over which the transmission belt 510b is stretched (i.e. right). Therefore, even if trouble such as breakage of the transmission belt 510b occurs when the discharge auger 52 is driven to discharge the grains in the grain tank 51, the belt parts can be easily replaced. .

Although the example of the common combine was shown in this embodiment, it is not restricted to this, The present invention may be a self-threshing combine.

The present invention is by no means limited to the above-described embodiments, and various improvements and modifications are possible without departing from the scope of the present invention.

3 Threshing device 7 Grain raising device 9 Exhaust gas purifying device 13 Operation part 14 Cabin 16 Air conditioner 16f Collection filter 16w Outside air introduction port 51 Glen tank 51e Most expanded part 51s Expanded part 61 Engine 62 Precleaner 78 Connecting member 90 Cover Member 91 First opening 92 Second opening 93 Third opening 94 Tail pipe 94b Rear end 100 Combine

Claims (5)

a precleaner arranged behind the cabin and on one side in the left-right direction;
an outside air inlet for introducing outside air into an air conditioner provided in the cabin;
a grain tank provided behind the cabin;
A threshing device provided adjacent to the grain tank and one side in the left-right direction;
an exhaust gas purification device provided between the grain tank and the threshing device and arranged at a position overlapping with the precleaner in plan view;
with
A combine harvester in which the outside air inlet is formed in a wall portion of the cabin on the same left-right direction side as the precleaner. The combine according to claim 1, further comprising a collection filter attached to the outside air inlet. A cover member that covers the exhaust gas purification device,
The cover member has a first opening provided on the front side of the exhaust gas purification device and a second opening provided on one side in the left-right direction of the exhaust gas purification device, the first opening being the The combine according to claim 1 or 2 formed smaller than the 2nd opening. A grain lifting device disposed between the grain tank and the threshing device is connected to the threshing device via a connecting member,
A combine harvester according to any one of claims 1 to 3 , wherein a rear end portion of a tail pipe that guides the exhaust gas that has passed through the exhaust gas purifier out of the machine is supported by the connecting member. A bulging portion that bulges toward one side in the left-right direction is formed in the rear portion of the grain tank,
The rear end of the tail pipe that guides the exhaust gas that has passed through the exhaust gas purifying device to the outside of the machine is arranged behind the rear end of the grain lifting device arranged between the grain tank and the threshing device, 5. The combine according to any one of claims 1 to 4 , wherein the bulging portion is arranged forward of the most bulging portion.

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