JP2017136091A - Combine-harvester - Google Patents

Abstract

PROBLEM TO BE SOLVED: To prevent excessive heating of a DPF unit.SOLUTION: An engine (9) is disposed in an engine room (E) provided in front of a grain tank (6), a DPF unit (40) for cleaning exhaust gas of the engine (9) is disposed in a space (S) formed between a thresher (5) and the grain tank (6), the DPF unit (40) is connected via a connecting pipe (50) to an exhaust manifold (30B) of the engine (9), the DPF unit (40) is covered by a covering body (42) inclined in the horizontal direction, and an opening part (A) is formed on a lower side of the covering body (42). Further, the covering body (42) includes two covers (45A and 45B) inclined downward in the right side and downward in the left side, where the two covers (45A and 45B) are separably configured.SELECTED DRAWING: Figure 5

Description

  The present invention relates to a combine provided with an exhaust emission control device.

  Conventionally, the structure which arrange | positions the exhaust gas purification apparatus which purifies the unburned fuel and granulated substance contained in exhaust gas in the space formed between a threshing apparatus and a glen tank is proposed (refer patent document 1).

JP 2011-135846 A

  The combine described in Patent Document 1 has an exhaust purification device for purifying unburned fuel and granulated substances inside an airtight cover, so that the exhaust device is excessively heated and is in the vicinity of the exhaust device. There was a risk that the installed detector would malfunction.

  Further, since the notch portion of the cover is provided on the side of the grain tank, there is a problem that safety during maintenance / inspection work performed with the grain tank opened is low.

  Therefore, the main problem of the present invention is to eliminate such problems.

  In order to solve the above problems, the present invention takes the following technical means.

  The invention according to claim 1 is provided with a traveling device (3) on the lower side of the machine body (2), and a threshing device (5) for threshing cereals on the upper left side of the machine body (2). On the right side of 5), in the combine equipped with a grain tank (6) for storing the threshed grain, the engine (9) is arranged in the engine room (E) provided in front of the grain tank (6). The DPF unit (40) for purifying the exhaust gas of the engine (9) is disposed in the space (S) formed between the threshing device (5) and the Glen tank (6), and the exhaust of the engine (9) A DPF unit (40) is connected to the manifold (30B) via a connecting pipe (50), and the DPF unit (40) is covered with a cover body (42) inclined in the left-right direction, and a lower portion of the cover body (42). A converter characterized by having an opening formed in It is obtained by the emissions.

  According to a second aspect of the present invention, the cover (42) is provided with two covers (45A, 45B) inclined toward the lower right side and the lower left side, and the two covers (45A, 45B) can be separated. The combine according to claim 1, which is configured as described above.

  According to a third aspect of the present invention, the connection pipe (50) connecting the exhaust manifold (30B) of the engine (9) and the DPF unit (40) is connected to the first connection pipe (51) and the second connection pipe (52). ) And a third connection pipe (53), and the first connection pipe (51) is extended from the exhaust manifold (30B) toward the rear side, and is then formed in the intake port of the second connection pipe (52). After connecting and extending the second connecting pipe (52) toward the lower rear side, the second connecting pipe (52) is connected to the intake port of the third connecting pipe (53), and the third connecting pipe (53) is directed downward. Connected to the front upper intake port (40E) of the DPF unit (40), and the exhaust side connection pipe (54) connected to the lower rear exhaust port (40F) of the DPF unit (40) The exhaust side connection pipe (54) is extended downward from the exhaust port (40F). Is obtained by a combined according to claim 1 or claim 2 and extending to the rear side is curved toward the rear side to.

  According to the first aspect of the present invention, since the opening is formed in the lower portion of the cover body 42 that covers the DPF unit 40, excessive heating of the DPF unit 40 can be prevented.

  According to the invention described in claim 2, in addition to the effect of the invention described in claim 1, the cover 42 covering the DPF unit 40 is provided with the two covers 45A, 45B inclined toward the lower right side and the lower left side. Since the two covers 45A and 45B are separable, maintenance and inspection work of the DPF unit 40 is facilitated.

  According to the third aspect of the invention, in addition to the effects of the first or second aspect of the invention, the intake port 40E of the DPF unit 40 is disposed at a position lower than the exhaust port of the exhaust manifold 30B of the engine 9. Since the exhaust port of the exhaust side connecting pipe 54 is disposed at a position lower than the exhaust port 40F of the DPF unit 40, the water contained in the exhaust gas can be easily drained.

It is a right view of a combine. It is a left view of a combine. It is a top view of a combine. It is a principal part rear view of this embodiment. It is a principal part enlarged rear view of this embodiment. It is a principal part right view of this embodiment. It is the state figure which removed the back inner side cover etc. of this embodiment. It is a principal part expansion right view of this embodiment. It is a right view of the cover of this embodiment. It is a principal part top view of this embodiment.

  Hereinafter, this embodiment of the present invention will be described in detail with reference to the accompanying drawings. In addition, in order to make an understanding easy, although it showed and demonstrated the direction for convenience, the structure is not limited by these.

  As shown in FIGS. 1 to 3, the combine 1 includes a traveling device 3 composed of a pair of left and right crawlers that travels across the field, a reaping device 4 that harvests cereals from the field at the front end position of the machine body, and cereals behind it. A threshing device 5 that performs threshing / selection of the threshing, and a Glen tank 6 that is juxtaposed on the right side of the threshing device 5 and stores the threshed and sorted grain, and faces the back of the reaping device 5 on the front side of the Glen tank 6. The site is provided with a control unit 7 on which an operator gets on board.

Further, the rear side of the Glen tank 6 is provided with a discharge auger 8 that discharges stored grains to the outside of the machine, and a diesel engine 9 is mounted in the engine room E on the lower rear side of the control unit 7.
(Threshing device)
The cereals harvested by the reaping device 4 are lifted and conveyed to the threshing device 5 and threshed and selected by the threshing device 5. The threshing device 5 includes a handling chamber for threshing the cereal at the upper part and a sorting room for selecting the grain at the lower part. As shown in FIGS. 4 and 6 and the like, a handling cylinder 10 having a plurality of teeth is supported on a handling cylinder shaft extending in the front-rear direction, and the sorting chamber includes a front portion of a swing sorting device. Air is sent to the first shelves 11 for blowing air to the transfer shelves, the first receptacle 12 for collecting the grains leaking from the rocking sorter, and the sheave at the rear of the rocking sorter A second karakomi (not shown) and a second receiving rod 13 for collecting the grain (second product) to which the branch raft leaked from the swing sorter is attached are installed in order from the front side.

  The grain recovered by the first receiving tray 12 is pumped to the glen tank 6 by the first cerealing device 14 installed on the right side of the threshing device 5. The first cerealing device 14 is composed of a first cereal cylinder made of a cylindrical steel material and a first cerealing helix spiraling the grain, and the base of the first cerealing device 14 is on the right side of the threshing device 5. The front part of the first cerealing device 14 communicates with the inlet of the glen tank 6 and communicates with the outlet formed in the lower part. Moreover, the 1st threshing apparatus 14 is installed in the space S pinched | interposed by the threshing apparatus 5 and the Glen tank 6 toward the upper part toward the upper part from the base, and is inclined and installed.

  The second thing collected by the second receiving basket 13 is transported to the second processing chamber 16 by the second cerealing device 15 installed on the right side of the threshing device 5. The second cerealing device 15 is composed of a second cerealing cylinder made of cylindrical steel and a second cerealing helix for feeding the second thing, and is located behind the base of the first cerealing device 14. The base part of the 2 cerealing device 15 communicates with an outlet formed at the lower right side of the threshing device 5, and the front part of the second cerealing device 15 communicates with the input port of the second processing chamber 16. In addition, the second cerealing device 15 is installed so as to incline forward from the base toward the top in the space S sandwiched between the threshing device 5 and the Glen tank 6.

A second processing cylinder having intermittent spiral blades on the outer peripheral surface is pivoted inside the second processing chamber 16 for processing and reducing the second product. The second product supplied to the second processing chamber 16 is conveyed forward by the rotating second processing cylinder, and the grains and branch branches are separated, and falls from the second processing product reducing port to the swing sorter. , Re-sorted by joining with the object to be processed from the handling room.
(Glentank)
The grain lifted by the first cerealing device 14 is stored in the glen tank 6. As shown in FIGS. 4 and 5, the Glen tank 6 includes a tank part 20 in which an inlet is formed and a funnel part 21 in which a discharge spiral for transferring the grains to the discharge auger 8 is provided.

  In order to facilitate inspection / maintenance work in the Glen tank 6, the tank portion 20 has a joining structure in which the right side wall 20A and the left side wall 20B are joined by a fastening member such as a bolt. The right side wall 20A integrally forms a front wall, a rear wall, a right side wall, and a ceiling wall by pressing, and bolts inserted through the left side wall 20B on the outer periphery of the right side wall 20A. A fastening portion such as a nut for fixing the nut is provided. Further, an insertion hole through which the bolt is inserted is opened in the peripheral portion of the left side wall 20B.

The funnel portion 21 includes a front wall, a rear wall, a right wall, and a left wall 21D that is inclined from the left side to the right side from the upper end portion toward the lower end portion, and is formed in a substantially triangular prism shape with the upper side open. Yes. A discharge spiral for conveying the grains stored in the glen tank 6 to the discharge auger 8 is disposed at a lower portion of the funnel portion 21 so as to be shifted to the right side of the funnel portion 21. In addition, the inclined wall 21 </ b> D has an angle of repose in order to efficiently discharge the grains stored in the Glen tank 6.
(engine)
The engine 9 disposed in the engine room E below the control unit 7 is attached to the body 2 via a vibration isolation mount in order to suppress vibration of the engine 9. On the upper surface of the engine 9, as shown in FIG. 10, a supercharger 30 having an intake turbine 30 </ b> A that supplies air to the engine 9 and an exhaust manifold 30 </ b> B that discharges exhaust gas, and a part of the exhaust gas to the engine 9. An exhaust gas recirculation device (EGR) 31 to be mixed is provided side by side.
(DPF unit)
In order to remove impurities contained in the exhaust gas discharged from the engine 9, a DPF unit 40 is connected to the exhaust manifold 30B of the engine 9 via a connecting pipe 50 as shown in FIG. The DPF unit 40 includes an intake side oxidation catalyst (DOC) and an exhaust side particulate filter (DPF). Unburned fuel contained in the exhaust gas is oxidized by the DOC and contained in the exhaust gas. The granulated material is removed by the DPF.

  Further, the front case 40C and the rear case D of the DPF unit 40 have a split structure, and a flange standing at the rear end portion of the front case 40C and a flange standing at the front end portion of the rear case D are bolts. Etc. are concluded. At the time of maintenance / inspection work such as replacement of the DPF, the rear case 40D can be removed from the front case 40C as shown in FIG.

  The DPF unit 40 is supported by a cover 42 made of a steel material attached to the machine body 2 as shown in FIGS. The cover 42 is provided on the outer periphery of the front and rear two lower support members 43 and 43, the upper support members 44 and 44, and the upper support members 44 and 44 that sandwich and support the rear portion of the front case 40A of the DPF unit 40 from above and below. In order to suppress the temperature rise inside the cover body 42, it is comprised by the attached inner cover 45 and the outer cover (heat shield plate) 46 attached to the outer periphery of the inner cover 45. An opening A is formed in the lower part of the cover body 42 facing the tang 11.

  In order to prevent the interference between the cover 42 of the DPF unit 40 and the mounting arm 58 of the pitching cylinder (cylinder) 57 and to arrange the DPF unit 40 downward, the traveling device 3 is disposed behind the cover 42 of the DPF unit 40. A pitching cylinder 57 for adjusting the tilt angle in the front-rear direction is arranged. That is, when viewed from the side, the base of the pitching cylinder 57 is rotatably attached to the airframe 2 via the support member below the second receiving rod 13, and the tip of the pitching cylinder 57 is arranged at the center of the first receiving rod 12. The front end portion and the intermediate portion of the traveling device 3 provided below the machine body 2 are connected by an attachment arm 58 that connects the intermediate portion.

  Further, by disposing the DPF unit 40 and the cover body 42 below, it is not necessary to provide a recess in the left wall 21D of the funnel portion 21 of the Glen tank 6, the Glen tank 6 can be manufactured at low cost, and a large storage capacity is provided. Can also be secured.

  In order to facilitate the maintenance and inspection work of the rolling cylinder 59 that opens the Glen tank 3 and adjusts the tilt angle in the left-right direction of the traveling device 3, as shown in FIG. Is arranged on the Glen tank 6 side and a rolling cylinder 59 is arranged.

  As shown in FIG. 5 and the like, the lower support member 43 includes a lower left support member 43A and a lower right support member 43B.

  The lower left support member 43A includes a base portion attached to the airframe 2 and a front portion formed with a substantially semicircular arc-shaped notch facing the lower portion of the rear portion of the front case 40A of the DPF unit 40. The base part extends substantially straight upward from the airframe 2, the left front part of the front part extends substantially straight upward from the base part, and the right front part of the front part extends from the base part toward the right side. After that, it extends toward the upper right side. Further, in order to facilitate the attaching / detaching operation of the DPF unit 40, the left front end portion of the front portion extends to the direction of about 10 o'clock, and the right front end portion of the front portion extends to the direction of about 3 o'clock. .

  The lower right support member 43B is composed of a base attached to the airframe 2 and a front part fixed to the lower part of the right front part of the lower left support member 43A by welding or the like, and the above-described rolling cylinder 59 is connected to the DPF unit 40. In order to arrange it downward, in the rear view, the base portion extends from the body 2 toward the upper left side, and the tip portion extends from the terminal end portion of the base portion to the lower left side along the lower portion of the right tip portion of the lower left support member 43A. It extends towards.

  As shown in FIG. 5 and the like, the upper support member 44 is formed with a substantially semicircular notch portion facing the upper portion of the rear portion of the front case 40A of the DPF unit 40 on the inner peripheral portion. Extend gently from the end toward the upper right side, then slowly extend to the lower right side, then continue to extend to the lower right side, and then extend downward to reach the right end. . Further, the left end portion of the upper support member 44 is fastened to the left end portion of the lower left support member 43A by a bolt or the like, and the right end portion of the upper support member 44 is connected to the right end portion of the lower left support member 43A by a bolt or the like. It is concluded to. A substantially L-shaped attachment piece 44 </ b> A for attaching an inner cover 45 and a support member 47, which will be described later, is erected on the outer peripheral portion of the upper support member 44.

  In order to reduce the size of the cover 42, the right outer periphery and lower right outer periphery of the lower support member 43 and the outer periphery of the upper support member 44 are erected on the front and rear cases 40C and 40D of the DPF unit 40, respectively. It extends substantially parallel to each piece of the flange.

  In order to facilitate the attachment / detachment work of the sensor 47D for measuring the temperature, pressure, etc. of the DPF unit 40, the attachment portion 47A of the support member 47 to which the sensor 47D is attached is provided on the cover 42 as shown in FIGS. Place outside.

  The support member 47 includes a mounting portion 47A for mounting the sensor 47D, and front and rear side leg portions 47B and 47C fastened to the mounting piece 44A of the upper support member 44 of the cover 42 by bolts or the like. The rigidity of the support member 47 is increased. In order to increase, the rear leg 47B is fastened to the attachment piece 44A of the upper support member 44 disposed on the rear side, and the front leg 47C is fastened to the attachment piece 44A of the upper support member 44 disposed on the front side. Yes. Further, in order to open the glen tank 6 and facilitate maintenance and inspection work of the sensor 47D, the sensor 47D is detachably attached to the glen tank 6 side of the mounting portion 47A. In addition, in order to prevent malfunction of the sensor 47D due to temperature rise due to heat radiation of the DPF unit 40, an outer cover 46 described later having a function as a heat shield is provided below the sensor 47D.

  In order to facilitate maintenance and inspection work such as replacement of the DPF of the DPF unit 40, the inner cover 45 is divided into a front inner cover 45A and a rear inner cover 45B as shown in FIG. The front end portion of the rear inner cover 45B that covers the rear case 40D is fastened to the rear end portion of the front inner cover 45A that covers the front case 40C with bolts or the like. At the time of maintenance / inspection work such as replacement of the DPF, as shown in FIG. 7, the rear inner cover 45B can be removed from the front inner cover 45A and the replacement work can be easily performed.

  The front inner cover 45A includes a left inner cover 45C and a right inner cover 45D as shown in FIG.

  The left inner cover 45C has a first piece extending from the lower left starting end toward the upper bent portion in the rear view, and is bent at approximately 135 degrees at the bent portion toward the upper right end portion. And the second piece is fastened to the attachment piece 44A of the upper support member 44 by a bolt or the like, and the starting end extends to a position corresponding to the center of the DPF unit 40 in the vertical direction. It is installed.

  The right inner cover 45D includes a third piece extending from the upper left starting end portion toward the upper right bent portion in the rear view, and a bent portion on the lower right side that is bent at approximately 135 degrees at the bent portion. A fourth piece extending toward the bent portion, a fifth piece bent at approximately 135 degrees at the bent portion and extending toward the bent portion on the lower right side, and a bent portion at approximately 135 degrees. And a sixth piece extending toward the lower bent portion and a seventh piece bent at approximately 135 degrees at the bent portion and extending toward the lower left end portion, The 3 to 5 pieces are fastened to the mounting piece 44A of the upper support member 44 by bolts or the like, and the seventh piece is provided to reinforce the fastening portion between the lower right support member 43B and the upper support member 44 by bolts or the like. The third piece of the right inner cover 45D is fastened to the reinforcing piece 44B and the second piece of the left inner cover 45C is Even without being arranged by laminating a part of the upper, end of the seventh piece of the right inner cover 45D is extended to a position corresponding to the center portion in the lateral direction of the DPF unit 40. Also, a front plate 45E formed in an octagonal shape substantially the same as the flange standing on the front and rear cases 40C and 40D of the DPF unit 40 is attached to the tip of the third to seventh pieces of the right inner cover 45D. ing.

  In order to reduce the size of the cover 42, the first and second pieces of the left inner cover 45C and the third to seventh pieces of the right inner cover 45D are flanges provided upright on the front and rear cases 40C and 40D of the DPF unit 40, respectively. In order to prevent the temperature inside the cover body 42 from rising and to improve the safety of inspection and maintenance work of the DPF unit 40 and the like performed by opening the glen tank 6, the cover body 42 An opening A formed by the start end of the first piece of the left inner cover 45C and the end of the seventh piece of the right inner cover 45D is provided on the side of the lower threshing device 3 facing the first tang 11. It has been. The starting end of the first piece of the left inner cover 45C extends to the center in the vertical direction of the DPF unit 40 on the left side of the DPF unit 40 in the rear view, and the end of the seventh piece of the right inner cover 45D is In the rear view, it extends below the DPF unit 40 to the center in the left-right direction of the DPF unit 40.

  Further, a substantially L-shaped attachment piece 45G for attaching a front outer cover 46A described later is provided on the outer periphery of the third to sixth pieces of the right inner cover 45D, and two lower right and left lower parts are provided on the seventh piece. A slit is provided to loosely insert the side support member 47B.

  The rear inner cover 45B is integrally formed in substantially the same shape as the front inner cover 45A in a rear view, and is a first piece of the front inner cover 45A extending from the lower left starting end portion toward the upper bent portion. A second piece facing the second and third pieces of the front inner cover 45A that is bent at approximately 135 degrees at the bent portion and extends toward the bent portion on the upper right side, A third piece facing the fourth piece of the front inner cover 45A which is bent at approximately 135 degrees at the bent portion and extends toward the bent portion on the lower right side, and is bent at approximately 135 degrees at the bent portion. A fourth piece facing the fifth piece of the front inner cover 45A extending toward the lower right bent portion and the bent portion being bent at approximately 135 degrees and extending toward the lower bent portion. Folded at approximately 135 degrees at the fifth piece facing the sixth piece of the front inner cover 45A and the bent part The front end cover 40 </ b> A extends from the front end cover 45 </ b> A and is opposed to the seventh end of the front inner cover 45 </ b> A. A rear plate 45F formed in an octagonal shape substantially the same as the flange standing on 40D is attached.

  In order to reduce the size of the cover 42, the first to sixth pieces of the rear inner cover 45B are extended substantially in parallel with the flange pieces standing on the front and rear cases 40C and 40D of the DPF unit 40, respectively. Yes. Moreover, in order to prevent the temperature rise in the cover body 42, on the side facing the threshing device 3 below the cover body 42, the first end of the first piece of the rear inner cover 45B continuous to the opening A and the sixth An opening formed at the end of the piece can also be provided. Further, a substantially L-shaped mounting piece 45H for attaching a rear outer cover 46B described later is erected on the outer periphery of the second to fifth pieces of the rear inner cover 45B.

  The outer cover 46 includes a front outer cover 46A provided outside the front inner cover 45A and a rear outer cover 46B provided outside the rear inner cover 45B. As shown in FIGS. 5 and 9, etc., the front outer cover 46A is fastened to a mounting piece 45G standing on the outer periphery of the third to sixth pieces of the front inner cover 45A by bolts, etc. The inner cover 45B is fastened to a mounting piece 45H erected on the outer periphery of the third to sixth pieces with bolts or the like.

  As shown in FIG. 9 and the like, the front outer cover 46A is provided below the sensor 47D attached to the support member 47 in order to prevent malfunction of the sensor 47D due to temperature rise due to heat radiation of the DPF unit 40. The outer cover 46A is formed with slits through which the front and rear leg portions 47B and 47C of the support member 47 pass. Further, the rear outer cover 46 </ b> B extends rearward from the rear side of the support member 47.

  The front and rear outer covers 46A and 46B have a first piece extending from the upper left starting end portion toward the upper right bent portion in the rear view and the lower bent portion on the lower right side by being bent at approximately 135 degrees at the bent portion. A second piece extending toward the bent portion, a third piece bent at approximately 135 degrees at the bent portion and extending toward the bent portion on the lower right side, and approximately 135 degrees at the bent portion It is composed of a fourth piece that is bent and extends toward the lower bent portion, and the first to fourth pieces are respectively installed on the third to sixth pieces of the right inner cover 45D by bolts or the like. It is fastened to the piece 45G by a bolt or the like.

  In order to reduce the size of the cover 42, the first to fourth pieces of the front and rear outer covers 46A and 46B extend substantially parallel to the flange pieces standing on the front and rear cases 40C and 40D of the DPF unit 40, respectively. The front inner cover 45 </ b> A extends substantially parallel to the third to sixth pieces. The front outer cover 46A needs to be provided at least in the sensor 47D in order to prevent malfunction of the sensor 47D due to temperature rise. However, extending the front end of the front inner cover 45A improves safety. It is suitable.

  An intake side connection pipe 50 connecting the exhaust port of the exhaust manifold 30B of the engine 9 and the intake port 40E of the DPF unit 40 is a connection pipe ("first connection pipe" in the claims) 51 made of steel pipe, In order to reduce the propagation of vibrations, a flexible connecting pipe ("second connecting pipe" in the claims) 52 made of a stainless steel pipe and a connecting pipe ("third connecting pipe" in the claims) 53 made of steel pipe are used. It is composed of

  As shown in FIG. 8 and the like, the connection pipe 51 extends from the exhaust port of the exhaust manifold 30B toward the lower rear side in a side view, and from the exhaust port of the exhaust manifold 30B in a plan view as shown in FIG. It extends toward the left side, and then curves toward the rear side by approximately 90 degrees and is connected to the intake port of the connection pipe 52.

  As shown in FIG. 8 and the like, the connecting pipe 52 extends downward from the inlet of the connecting pipe 52 in the side view, and extends from the inlet of the connecting pipe 52 in the plan view as shown in FIG. It extends toward the rear side and is connected to the intake port of the connection pipe 53.

  As shown in FIG. 8 and the like, the connection pipe 53 extends from the exhaust port of the connection pipe 52 by bending approximately 90 degrees downward as viewed from the side, and is connected to the intake port 40E of the DPF unit 40.

  The exhaust port 40F of the DPF unit 40 is connected to an exhaust side connection pipe (exhaust side connection pipe) made of a steel pipe that discharges the unburned fuel and the exhaust gas from which the particulate matter in the exhaust gas has been removed by the DPF unit 40 to the outside. 54 is connected.

  In order to prevent the temperature of the connection pipe 54 from rising due to exhaust of high-temperature exhaust gas, the inner diameter of the connection pipe 54 is formed larger than the outer diameter of the exhaust port 40F of the DPF unit 40. Therefore, the exhaust air flowing into the connection pipe 54 from the exhaust port 40F of the DPF unit 40 draws outside air from the gap between the DPF unit 40 side end of the connection pipe 54 and the exhaust port 40E, so that the inside of the connection pipe 54 The exhaust temperature decreases.

  As shown in FIG. 8 and the like, the connecting pipe 54 extends downward from the exhaust port 40F of the DPF unit 40 in a side view, and then curves substantially 90 degrees toward the rear side, as shown in FIG. As described above, the space between the airframes 2 is extended toward the rear side in the plan view. In this embodiment, the connection pipe 54 is connected to the exhaust port 40F provided in the lower part of the DPF unit 40, but the connection pipe 54 is connected to the exhaust port 40F provided in the upper part of the DPF unit 40. In this case, in order to use the space S efficiently, it is preferable to arrange the connection pipe 54 in parallel with the first cerealing device 14 on the front side of the first cerealing device 14 in a side view.

Further, in order to facilitate drainage of water contained in the exhaust gas, the intake port 40E of the DPF unit 40 is disposed at a position lower than the exhaust port of the exhaust manifold 30B of the engine 9 as shown in FIG. The exhaust port of the connection pipe 54 is disposed at a position lower than the exhaust port 40F of the DPF unit 40.
(Disposition position of DPF unit)
As shown in FIGS. 8 and 10, the DPF unit 40 supported by the cover body 42 is longer than the movable range of the mounting arm 58 of the pitching cylinder 57 between the rear surface of the engine 9 and the first cerealing device 14 in the front-rear direction. It is arranged in the front. Further, the DPF unit 40 is biased to the front side of the grain tank 6 in order to promote drying of the grains stored in the grain tank 6.

  As shown in FIGS. 5, 8, etc., the DPF unit 40 is arranged at a position that is lower than the center of the cooling fan 28 provided in the engine room E and higher than the center of the fan of the first tang 11 in the vertical direction. Further, it is arranged at a position higher than the rolling pitching cylinder 58. Further, the upper portion of the DPF unit 40 is arranged at a position lower than the funnel portion 21 of the Glen tank 6 in order to promote drying of the grains stored in the Glen tank 6.

  As shown in FIGS. 5 and 10, the DPF unit 40 is arranged between the threshing device 3 and the grain tank 6 in the left-right direction, and promotes drying of the grains stored in the grain tank 6. The upper right side of 40 faces the inclined wall 21 </ b> D of the funnel portion 21 of the Glen tank 6. Further, the center of the DPF unit 40 is biased to the grain tank 6 in order to promote drying of the grains stored in the grain tank 6.

2 Airframe 3 Traveling device 5 Threshing device 6 Glen tank 9 Engine 30B Exhaust manifold 40 DPF unit 40E Intake port 40F Exhaust port 42 Cover body 45A Front inner cover (cover)
45B Rear inner cover (cover)
50 Connection pipe 51 Connection pipe (first connection pipe)
52 Connection pipe (second connection pipe)
53 Connection pipe (third connection pipe)
54 Connection pipe (exhaust side connection pipe)
E Engine room S Space

Claims (3)

  A traveling device (3) is provided on the lower side of the machine body (2), a threshing device (5) for threshing the cereals on the upper left side of the machine body (2), and threshing is performed on the right side of the threshing device (5). In a combine equipped with a grain tank (6) for storing grain, an engine (9) is arranged in an engine room (E) provided in front of the grain tank (6), and the threshing device (5) and the grain A DPF unit (40) for purifying exhaust gas of the engine (9) is disposed in a space (S) formed between the tanks (6), and a connection pipe (50) is connected to the exhaust manifold (30B) of the engine (9). ), The DPF unit (40) is connected to the DPF unit (40), the DPF unit (40) is covered with a cover (42) inclined in the left-right direction, and an opening is formed in the lower part of the cover (42). Combine with.   The cover (42) is provided with two covers (45A, 45B) inclined toward a lower right side and a lower left side, and the two covers (45A, 45B) are configured to be separable. Combine.   The connection pipe (50) connecting the exhaust manifold (30B) of the engine (9) and the DPF unit (40) is connected to the first connection pipe (51), the second connection pipe (52), and the third connection pipe (53). The first connection pipe (51) extends from the exhaust manifold (30B) toward the rear side, and then is connected to the intake port of the second connection pipe (52), and the second connection pipe ( 52) is extended toward the lower rear side and then connected to the intake port of the third connecting pipe (53), and the third connecting pipe (53) is bent downward so that the DPF unit (40 ) Is connected to the front upper intake port (40E), and the exhaust side connection pipe (54) is connected to the lower rear exhaust port (40F) of the DPF unit (40). ) Extended downward from the exhaust port (40F) and then bent toward the rear side Combine of claim 1 or claim 2 and extends rearward.

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