JP2013202027A5 - - Google Patents

Description

Combine

The present invention relates to a combine equipped with a diesel particulate filter.

Conventionally, the structure which arrange | positions the exhaust-gas purification apparatus which purifies the granulated substance contained in exhaust gas in the space formed between a threshing apparatus and a glen tank is proposed (refer patent documents 1, 2).
In addition, a configuration has been proposed in which a tail pipe inclined upward after exhaust gas is exhausted is disposed in a space formed between the threshing device and the glen tank, and the tip of the tail pipe extends above the threshing device. (See Patent Document 3).

JP 2010-209813 A JP 2011-135846 A JP 2007-247472 A

In the combine described in Patent Documents 1 and 2, the tip of the tail pipe of the exhaust gas purification device is disposed below the air cleaner, so that the exhaust gas discharged from the tail pipe is supplied to the engine again, and the engine There was a possibility that combustion efficiency might fall.
Since the combine described in patent document 3 has arrange | positioned the tail pipe inclined back and raised between the side wall of a threshing apparatus, and the side wall of a Glen tank, it is necessary to narrow the width of the left and right direction of a Glen tank. There is a possibility that the storage capacity of the water will be reduced, and there is a possibility that rainwater entering from the exhaust port of the tape pipe may penetrate into the engine during harvesting work in rainy weather.

Then, the main subject of this invention is to propose the combine which can eliminate this problem.

The present invention that has solved the above problems is as follows.

That is, the invention described in claim 1 includes a threshing device (5) for threshing cereals on one side of the machine body, and storing the threshed grain on the other side of the machine body and a discharge auger (8). The first cerealing device (14) is provided with a grain tank (6) having a lower portion of the threshing device (5) and the upper portion of the grain tank (6). The threshing device (5) and the grain tank ( 6) In the combine disposed at a position between 6), an inclined wall (23B) inclined downward toward the left and right sides is formed at the lower part of the Glen tank (6), and the engine is located in front of the Glen tank (6). (9) is arranged, a pre-cleaner (32) is connected to the air cleaner (33) connected to the engine (9) , and a connection pipe (50) is connected to the exhaust manifold (30B) of the engine (9). To purify the exhaust gas of the engine (9) Connect the inlet of the DPF unit (40), the outlet of the DPF unit (40), connecting the tail pipe (6 1) for discharging the purified exhaust gas to the outside, the DPF unit (40 the), arranged in the central portion in the lateral direction of the inclined wall (23B) in a plan view, is disposed in the first recess (22B) formed in the base portion of the inclined wall (23B) of the tail pipe (6 1) Along with the inclined wall (23B), the tail pipe (61) is formed by a lower first tail pile (61A) and an upper second tail pipe (61B). The tail pipe (61B) is steeply inclined rearward and lower than the first tail pipe (61A), and the base of the first tail pipe (61A) is connected to the discharge port of the DPF unit (40). Pile (61A ) Is connected to the base of a second tail pipe (61B) having an inner diameter larger than the outer diameter of the outlet of the first tail pipe (61A), and the outlet of the first tail pipe (61A) is connected. A predetermined gap is provided between the outer peripheral surface of the outlet and the inner peripheral surface of the base of the second tail pipe (61B) to form a diffuser that draws outside air, and the upper end of the tail pipe (61) is connected to a glen tank (6 ) And a cover (62) having an opening (62A) facing the rear of the aircraft and preventing rainwater from entering the tail pipe (61) at the exhaust port at the upper end of the tail pipe (61). ), And an upper center portion of the tail pipe (61) is arranged such that the vertical center position of the opening (62A) of the cover (62) is higher than the intake port of the precleaner (32). Exhausted from A combine, wherein the exhaust gas is configured to be prevented from being sucked into the precleaner (32).

According to the second aspect of the present invention, a second recess (22A) for disposing the first cerealing device (14) is formed in the vertical wall (23A) on the threshing device (5) side of the Glen tank (6). The combine according to claim 1 , wherein an upper part of the tail pipe (61) is arranged at a position on the front side of the first cerealing device (14) in the second recess (22A) .

According to a third aspect of the present invention , the cover (62) is attached to a frame (16) having both ends supported by an auger receiving frame (8C) for receiving the discharge auger (8) and a first cerealing device (14). The left lower end portion of the guard (63) covering from the left and right directions is supported, the cover (62) is straddled by the guard (63), and the right lower end portion of the guard (63) is the upper end of the first cerealing device (14). The combine according to claim 1 or 2, which is supported by the part .

According to the first aspect of the invention, to connect the tail pipe (6 1) at the outlet of the DPF unit (40), the upper side and along the base of the tail pipe (6 1) on the inclined wall (23B) It was extended, since the upper end portion of the tail pipe (6 1) are arranged above the grain tank (6), to enable the space formed between the threshing device (5) and grain tank (6) Ru can take advantage of.

Further, it is possible to prevent the exhaust gas discharged from the tail pipe (61 ) from being supplied to the engine again, and to prevent a decrease in engine combustion efficiency.

In addition , since the DPF unit (40) is disposed at the center in the left-right direction of the inclined wall (23B) in plan view, the DPF unit (40) is stored in the Glen tank (6) by heat radiation from the DPF unit (40). The drying of the grain is promoted, and the clogging of the grain inside the glen tank when the grain is discharged can be prevented.

In addition , a diffuser that draws outside air is formed by providing a predetermined gap between the outer peripheral surface of the discharge port of the first tail pile (61A) and the inner peripheral surface of the base portion of the second tail pipe (61B). Outside air is drawn from the gap, and the exhaust gas discharged to the second tail pipe (61B) can be further cooled, and rainwater or the like that has entered from the exhaust port at the tip of the second tail pipe (61B) can be removed from the DPF unit. (40) It can discharge | emit outside from the gap | interval formed distally.

Further, since the arranged openings facing fuselage behind the outlet of the upper portion of the tail pipe (6 1) (62A) cover (62) having a, during harvesting of rainy weather, such as rain water tailpipe Intrusion into (61 ) can be prevented.

Since the center position in the vertical direction of the opening (62A) of the cover (62) is positioned higher than the intake port of the precleaner (32), the exhaust gas discharged from the tail pipe (61) Inhalation into the precleaner (32) can be prevented.

According to invention of Claim 2, in addition to the effect of the invention of Claim 1, the space formed between the threshing device (5) and the Glen tank (6) can be effectively utilized.

According to the invention described in claim 3, in addition to the effect of the invention described in claim 1 or 2, it is possible to prevent the cover (62) from being damaged due to the collision between the discharge auger (8) and the cover (62). it can.

It is a front view of the combine of 1st Embodiment. It is the left view which cut the principal part of the combine of 1st Embodiment. It is the top view which carried out the cross section of the principal part of the combine of 1st Embodiment. It is the rear view which carried out the cross section of the principal part of the combine of 1st Embodiment. It is the left view which cut the principal part of the combine provided with the guard member. It is the top view which carried out the cross section of the principal part of the combine provided with the guard member. It is explanatory drawing of an exhaust pipe. It is explanatory drawing of another exhaust pipe. It is the left view which cut the principal part of the combine of 2nd Embodiment. It is the top view which carried out the cross section of the principal part of the combine of 2nd Embodiment. It is the rear view which carried out the cross section of the principal part of the combine of 2nd Embodiment. It is the left view which cut the principal part of the combine of 3rd Embodiment. It is the top view which cut the principal part of the combine of 3rd Embodiment. It is the rear view which carried out the cross section of the principal part of the combine of 3rd Embodiment.

Hereinafter, a first 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 4, the combine 1 includes a traveling device 3 composed of a pair of left and right crawlers traveling in the field, a reaping device 4 that harvests cereals from the field at the front end position of the machine body, and a grain behind it. A threshing device 5 that performs threshing / sorting of straw and a Glen tank 6 that is juxtaposed on the right side of the threshing device 5 and stores the threshed / sorted grain are provided on the back side of the reaping device 5 on the front side of the Glen tank 6. A cabin 7 on which the operator is boarded is provided at the part facing the vehicle.
In addition, 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 an engine room E below the cabin 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 apparatus 5 includes a handling chamber for threshing cereals at the upper part and a sorting room for selecting cereals at the lower part. A handling cylinder having a plurality of tooth handling teeth in the front-rear direction is pivotally supported in the handling chamber, and the first receptacle for collecting the grains leaking from the swing sorting device and the branch bellflower adhere to the sorting chamber. A second receiving bowl is provided to collect the finished grains.

The grain recovered by the first receiving is pumped to the grain tank 6 by the first cerealing device 14 arranged on the right side of the threshing device 5. The base of the first cerealing device 14 communicates with an outlet formed at the lower right side of the threshing device 5, and the upper part of the first threshing device 14 communicates with the inlet of the glen tank 6.
Moreover, the 1st threshing apparatus 14 is installed in the space S pinched | interposed by the threshing apparatus 5 and the Glen tank 6 so that it may go up toward the front-end | tip part from the base, and may incline.

The cereal grains to which branch rafts and the like collected by the second receiving pad adhere are transferred to the second processing chamber (not shown) by the second cerealing device 15 installed on the right side of the threshing device 5. The base of the second cerealing device 15 located behind the base of the first cerealing device 14 communicates with an outlet formed in the lower right side of the threshing device 5, and the upper part of the second cerealing device 15 is It communicates with the inlet of the number processing chamber. In addition, the second cerealing device 15 is installed so as to incline forward from the base portion toward the tip portion in the space S sandwiched between the threshing device 5 and the grain tank 6.

(Glentank)
The grain lifted by the first cerealing device 14 is stored in the glen tank 6. The grain tank 6 is composed of front and rear walls in the front and rear direction, right and left walls in the left and right direction, left wall, and ceiling wall, and a grain inlet is formed in the upper part of the left wall. At the bottom of 6, a discharge spiral for transferring the grains to the discharge auger 8 is provided.
The upper part of the left wall of the Glen tank 6 is formed in a vertical wall 23A extending vertically in the vertical direction to store a large amount of grain, and the bottom part of the left wall efficiently stores the stored grain. In order to be well taken into the discharge spiral, it is formed on an inclined wall 23B inclined from the left side to the right side with a repose angle.

In order to effectively use the space S formed between the threshing device 5 and the Glen tank 6, the first cerealing device 14 and the second cerealing device 15 are arranged on the vertical wall 23A of the left wall. A concave portion (second concave portion) 22A is formed, and a concave portion (first concave portion) 22B in which an exhaust pipe 60 of a diesel particulate filter (DPF unit) 40 described later is disposed is formed on the inclined wall 23B on the left wall. Yes. In addition, by arrange | positioning the exhaust pipe 60 of the DPF unit 40 of a high temperature state in the recessed part 22B of the inclined wall 23B of a left wall, drying of the grain stored in the grain tank 6 is accelerated | stimulated, and conveyance of a grain is efficiently performed. Can be done.

(engine)
The engine 9 is attached to the fuselage frame 2 via an engine mount. The engine 9 is provided with a supercharger 30 having an intake turbine 30 </ b> A that supercharges air to the engine 9 and an exhaust manifold 30 </ b> B that exhausts exhaust gas from the engine 9.
An air cleaner 33 is connected to the intake turbine 30A to remove impurities in the air taken in through the connection pipe 35. A pre-cleaner 32 that takes in air while filtering outside air is connected to the air cleaner 33 through the connection pipe 34. The exhaust manifold 30 is connected to a DPF unit 40 that removes impurities in the exhaust gas via a connection pipe 50.

(DPF unit)
The DPF unit 40 includes an oxidation catalyst (DOC) 40 </ b> A on the intake port (inlet) side and a particulate filter (DPF) 40 </ b> B on the exhaust port (exhaust port) side, and exhaust gas discharged from the engine 9. The unburned fuel in the gas is oxidized by the DOC 40A, and the particulate matter in the exhaust gas is removed by the filtering action of the DPF 40B.

As shown in FIG. 2 and the like, the DPF unit 40 is attached to the fuselage frame 2 via a mount in the same manner as the engine 9 in order to simplify the mounting structure, and reduces the temperature of exhaust gas discharged from the engine 9. In order to prevent this, the DPF unit 40 is disposed between the back surface of the engine 9 and the base of the first cerealing device 14, and more specifically, to promote drying of the grains stored in the grain tank 6. The front end portion is arranged at substantially the same position as the front wall of the Glen tank 6.

As shown in FIGS. 3 and 4, the DPF unit 40 has a lower side of a substantially central portion in the left-right direction of the grain tank 6 in order to dry the grains stored in the grain tank 6 by heat radiation from the DPF unit 40. In the plan view, the outlet of the DPF unit 40 is disposed below the silhouette portion of the inclined wall 23B of the left wall of the Glen tank 6.

As shown in FIG. 7, the intake port of the DPF unit 40 is connected to the exhaust manifold 30B via a connecting pipe 50, and exhaust gas from which impurities and the like have been removed is connected to the exhaust port (exhaust port) of the DPF unit 40. An exhaust pipe 60 for discharging to the outside is connected.

The connection pipe 50 includes a first connection pipe 51 made of a steel pipe, a flexible tube 52 made of a flexible stainless pipe that reduces the propagation of vibration of the engine 9, and a second connection pipe 53 made of a steel pipe. Yes.

In the side view, the first connection pipe 51 extends from the exhaust manifold 30 substantially downward, and the flexible tube 52 extends from the tip of the first connection pipe 51 substantially downward, The two connection pipes 53 are bent approximately 90 degrees from the distal end portion of the flexible tube 52, and then extend rearward and are connected to the intake port of the DPF unit 40.

In the rear view, the first connecting pipe 51 is bent approximately 90 degrees from the exhaust manifold 30 and then extends substantially downward, and the flexible tube 52 extends from the distal end portion of the first connecting pipe 51 substantially downward. The second connection pipe 53 extends from the distal end portion of the flexible tube 52 toward the substantially lower side, and then bends approximately 90 degrees toward the rear to be connected to the intake port of the DPF unit 40.

The exhaust pipe 60 is configured by an exhaust pipe (tape pipe) 61 made of a steel pipe and a cover 62 formed in a curved shape for preventing rainwater and the like from entering the exhaust pipe 61.

In a side view, the base portion of the exhaust pipe 61 extends upward from the exhaust port of the DPF unit 40, and then extends obliquely toward the front upper side. The cover 62 extends at a steep slope from the front end of the base toward the front upper side, and the cover 62 is attached to the exhaust port formed at the top end of the exhaust pipe 61 with the opening 62A facing rearward. .
In order to effectively use the space S formed between the threshing device 5 and the grain tank 6, the upper part of the exhaust pipe 61 is formed on the vertical wall 23A of the grain tank 6 in which the first threshing device 14 is disposed. It is arrange | positioned ahead of the 1st grain raising apparatus 14 in the recessed part 22A in parallel with the 1st grain raising apparatus 14. FIG. In addition, by arrange | positioning the upper part of the exhaust pipe 60 of a high temperature state to the recessed part 22A of the vertical wall 23A of the Glen tank 6, drying of the grain stored in the Glen tank 6 is accelerated | stimulated, and conveyance of a grain is performed efficiently. be able to.

The cover 62 prevents the exhaust gas discharged out of the machine from the discharge pipe 61 from being sucked by the precleaner 32, and the center of the opening 62 </ b> A of the cover 62 in the vertical direction from the intake port of the precleaner 32. Is also placed at a high position. It is more preferable to arrange the exhaust port formed at the top end of the exhaust pipe 61 at a position higher than the intake port of the precleaner 32.
Further, in order to efficiently exhaust the exhaust gas to the outside of the machine, the front-rear direction of the cover 62 is attached substantially parallel to the lateral feed tube (lateral feed cylinder) 8B of the exhaust auger 8 in the housed state. In addition, the discharge auger 8 is connected to the rear side of the Glen tank 6 so that the vertical axis can be freely rotated, and to the upper end portion of the flouring tube 8A, the horizontal axis can be freely rotated. The transverse feed tube 8B.

In the rear view, the base portion of the exhaust pipe 61 extends upward from the exhaust port of the DPF unit 40 and then inclines toward the upper left side. The cover 62 extends upward from the distal end of the base, and the cover 62 is attached to an exhaust port formed at the distal end of the upper portion of the exhaust pipe 61 with the opening 62A facing rearward.
In order to effectively use the space S formed between the threshing device 5 and the Glen tank 6, the base of the exhaust pipe 61 is disposed in the concave portion 22B of the inclined wall 23B of the Glen tank 6, and the upper part of the exhaust pipe 61 is The first cerealing device 14 is arranged in parallel to the front side of the first cerealing device 14 in the recess 22A of the vertical wall 23A of the Glen tank 6.

The expanded inner diameter of the base portion of the exhaust pipe 61 is formed larger than the outer diameter of the exhaust port of the DPF unit 40. As a result, the diffuser effect is obtained, and the exhaust gas discharged from the DPF unit 40 to the exhaust pipe 61 causes the air to be drawn in from the gap between the bases of the DPF unit 40 and the exhaust pipe 61 to lower the temperature of the exhaust gas in the exhaust pipe 61. In addition, rainwater or the like that has entered from the opening 62A of the cover 62 can be drained out of the machine through the gap. In order to prevent impurities such as waste from entering the exhaust pipe 60, it is preferable that a net is stretched in the gap between the base portions of the DPF unit 40 and the exhaust pipe 61.

In order to prevent the cover 62 from being damaged due to the collision between the discharge auger 8 and the cover 62 due to inertial force, the left and right directions of the cover 62 are covered with a guard 63 made of steel as shown in FIGS. The lower left end of the guard 63 is supported by the auger receiving frame 8C of the discharge auger 8 and the frame 16 supported at both ends by the first cerealing device 14, and the lower right end is the upper end of the first cerealing device 14. The guard 63 is inclined toward the upper right side from the lower left end portion, then extends to the right side and straddles the cover 62, and then is inclined toward the lower right side to reach the lower right end portion.

(Other exhaust pipes)
As shown in FIG. 8, another exhaust pipe 60 of the first embodiment includes an exhaust pipe (first tape pipe) 61A in which the exhaust pipe 61 described above is a steel pipe, and a steel pipe having a diameter larger than that of the exhaust pipe 61A. The difference is that the exhaust pipe (second tape pipe) 61B is configured.

In a side view, the exhaust pipe 61A extends upward from the exhaust port of the DPF unit 40, and then inclines toward the upper front side. The exhaust pipe 61B extends forward from the tip of the exhaust pipe 61A. A cover 62 is attached to an exhaust port that extends at a higher slope than the exhaust pipe 61A and is formed at the top end of the exhaust pipe 61B.
In order to effectively utilize the space S formed between the threshing device 5 and the grain tank 6, the exhaust pipe 61B is a recess 22A formed in the vertical wall 23A of the grain tank 6 in which the first threshing device 14 is disposed. In addition, the first cerealing device 14 is arranged in front of the first cerealing device 14.

The cover 62 has an intake port 32A of the precleaner 32 centered in the vertical direction of the opening 62A of the cover 62 in order to prevent the exhaust gas discharged from the exhaust pipe 61B from being taken out by the precleaner 32. It is arranged at a higher position. Further, in order to efficiently exhaust the exhaust gas outside the machine, the front-rear direction of the cover 62 is attached substantially parallel to the lateral feed tube 8B of the discharge auger 8 in the housed state.

Although illustration is omitted, in the rear view, the exhaust pipe 61A extends upward from the exhaust port of the DPF unit 40 and then inclines toward the upper left side, and the exhaust pipe 61B is an exhaust pipe. A cover 62 is attached to an exhaust port that extends upward from the tip of 61A and is formed at the tip of the upper portion of the exhaust pipe 61B.
In order to effectively use the space S formed between the threshing device 5 and the grain tank 6, the exhaust pipe 61A is disposed in the recess 22B of the inclined wall 23B of the grain tank 6, and the exhaust pipe 61B is It arrange | positions in parallel with the 1st cerealing apparatus 14 at the recessed part 22A of the vertical wall 23A of the grain tank 6 in which the grain apparatus 14 is arrange | positioned.

The expanded inner diameter of the exhaust pipe 61A is larger than the outer diameter of the exhaust port of the DPF unit 40. As a result, a diffuser effect is obtained, and the exhaust gas discharged from the DPF unit 40 to the exhaust pipe 61A flows out of the gap between the DPF unit 40 and the exhaust pipe 61A to reduce the temperature of the exhaust gas in the exhaust pipe 61A. In addition, rainwater or the like that has entered from the opening 62A of the cover 62 can be drained out of the apparatus through the gap. In order to prevent the entry of impurities such as waste into the exhaust pipe 61A, it is preferable that a net is provided in the gap between the DPF unit 40 and the exhaust pipe 61A.

The inner diameter of the exhaust pipe 61B is larger than the outer diameter of the exhaust port of the exhaust pipe 61A. Thereby, the outflow of the exhaust gas discharged from the exhaust pipe 61A to the exhaust pipe 61B can draw air from the gap between the exhaust pipe 61A and the exhaust pipe 61B to reduce the temperature of the exhaust gas in the exhaust pipe 61B. Rainwater or the like that has entered from the opening 62A of the cover 62 can be drained out of the machine through the gap. In order to prevent impurities such as waste from entering the exhaust pipe 61B, it is preferable that a net is stretched in the gap between the exhaust pipe 61A and the exhaust pipe 61B.

(Second Embodiment)
Next, a second embodiment of the present invention will be described in detail with reference to the accompanying drawings. In addition, the same code | symbol is attached | subjected to the same member and description is abbreviate | omitted.

As shown in FIGS. 9 to 11, the DPF unit 40 according to the second embodiment includes a DOC 40 </ b> A on the intake port side, a Patiki DPF 40 </ b> B on the center, and a urea SCR 40 </ b> C on the exhaust port side. The unburned fuel in the exhaust gas is oxidized by the DOC 40A, the particulate matter in the exhaust gas is removed by the DPF 40B, and the nitrogen oxide in the exhaust gas is purified by the urea SCR 40C.

An intake port of the DPF unit 40 is connected to the exhaust manifold 30B via a connection pipe 50, and an exhaust pipe 60 for discharging exhaust gas from which impurities and the like are removed to the outside is connected to the exhaust port of the DPF unit 40. Yes.

The connection pipe 50 includes a first connection pipe 51 made of a steel pipe, a flexible tube 52 made of a flexible stainless pipe that reduces the propagation of vibration of the engine 9, and a second connection pipe 53 made of a steel pipe. Yes.

The exhaust pipe 60 includes an exhaust pipe (tape pipe) 71 made of a steel pipe and a cover 62 formed in a curved shape that prevents intrusion of rainwater or the like into the exhaust pipe 71.

In a side view, the base portion of the exhaust pipe 71 extends upward from the exhaust port of the DPF unit 40, and then inclines toward the front upper side. The cover 62 extends with a steep slope from the front end of the base toward the front upper side, and the cover 62 is attached to an exhaust port formed at the top end of the exhaust pipe 71 with the opening 62A facing rearward.
In order to effectively utilize the space S formed between the threshing device 5 and the grain tank 6, the upper part of the exhaust pipe 71 is a Glen tank in which the second cerealing device 15 installed on the right side of the threshing device 5 is arranged. 6 is arranged behind the second cerealing device 15 in the recess 22C formed in the vertical wall 23A.

In the rear view, the base of the exhaust pipe 71 extends upward from the exhaust port of the DPF unit 40 and then inclines toward the upper left side. The cover 62 extends upward from the distal end of the base, and the cover 62 is attached to an exhaust port formed at the upper distal end of the exhaust pipe 71 with the opening 62A facing rearward.
In order to effectively utilize the space S formed between the threshing device 5 and the Glen tank 6, the base of the exhaust pipe 71 is disposed in the recess 22D of the inclined wall 23B of the Glen tank 6, and the upper part of the exhaust pipe 71 is The second cerealing device 15 is disposed in parallel with the rear side of the second cerealing device 15 in the recess 22C of the vertical wall 23A of the Glen tank 6 where the second cerealing device 15 is disposed.

The expanded inner diameter of the base portion of the exhaust pipe 71 is larger than the outer diameter of the exhaust port of the DPF unit 40. As a result, a diffuser effect is obtained, and the exhaust gas exhausted from the DPF unit 40 to the exhaust pipe 71 flows out air from the gap between the bases of the DPF unit 40 and the exhaust pipe 71 to lower the temperature of the exhaust gas in the exhaust pipe 71. In addition, rainwater or the like that has entered from the opening 62A of the cover 62 can be discharged out of the machine through the gap.

(Third embodiment)
Next, a third embodiment of the present invention will be described in detail with reference to the accompanying drawings. In addition, the same code | symbol is attached | subjected to the same member and description is abbreviate | omitted.
As shown in FIGS. 12 to 14, the DPF unit 40 of the third embodiment is provided with an intake port side DOC 40 </ b> A, a central part of a Dachki DPF 40 </ b> B, and an exhaust port side urea SCR 40 </ b> C. The unburned fuel in the exhaust gas is oxidized by the DOC 40A, the particulate matter in the exhaust gas is removed by the DPF 40B, and the nitrogen oxide in the exhaust gas is purified by the urea SCR 40C.

An intake port of the DPF unit 40 is connected to the exhaust manifold 30B via a connection pipe 50, and an exhaust pipe 60 for discharging exhaust gas from which impurities and the like are removed to the outside is connected to the exhaust port of the DPF unit 40. Yes.

The connection pipe 50 includes a first connection pipe 51 made of a steel pipe, a flexible tube 52 made of a flexible stainless pipe that reduces the propagation of vibration of the engine 9, and a second connection pipe 53 made of a steel pipe. Yes.

The exhaust pipe 60 includes an exhaust pipe (tape pipe) 81 made of a steel pipe and a cover 62 formed in a curved shape that prevents intrusion of rainwater or the like into the exhaust pipe 81.

In side view, the exhaust pipe 81 extends upward from the exhaust port of the DPF unit 40, and the cover 62 is attached to the exhaust port formed at the tip of the exhaust pipe 81 with the opening 62 </ b> A facing rearward. It has been. Moreover, in order to suppress the temperature rise in the cabin 7 on which the operator is boarded by radiating heat from the exhaust pipe 81, the exhaust pipe 81 is disposed at the right rear part of the threshing device 5 behind the second cerealing device 15. .

In the rear view, the base of the exhaust pipe 81 extends upward from the exhaust port of the DPF unit 40, and then inclines toward the upper left and faces the right side of the threshing device 5. The upper portion of the exhaust pipe 81 extends upward from the distal end portion of the base portion of the exhaust pipe 81, and the cover 62 faces the opening 62 </ b> A rearward at an exhaust port formed at the distal end portion of the upper portion of the exhaust pipe 81. Installed.
In order to effectively utilize the space S formed between the threshing device 5 and the grain tank 6, the base of the exhaust pipe 81 is disposed in the concave portion 22D of the inclined wall 23B of the grain tank 6, and the exhaust pipe is viewed in plan view. A base portion 81 extends to the right side of the threshing device 5 beyond the transverse feed tube 8 </ b> B of the discharge auger 8. Further, the upper portion of the exhaust pipe 81 is arranged on the right side of the threshing device 5 in order to suppress the temperature rise in the cabin 7 on which the operator is boarded by heat radiation from the exhaust pipe 81.

The expanded inner diameter of the base portion of the exhaust pipe 81 is larger than the outer diameter of the exhaust port of the DPF unit 40. As a result, a diffuser effect is obtained, and the exhaust gas exhausted from the DPF unit 40 to the exhaust pipe 81 draws air from the gap between the bases of the DPF unit 40 and the exhaust pipe 81 to lower the temperature of the exhaust gas in the exhaust pipe 81. In addition, rainwater or the like that has entered from the opening 62A of the cover 62 can be discharged out of the machine through the gap.

5 Threshing device 6 Glen tank
8 discharge auger
8C auger receiving frame 9 engine 14 first cerealing device
16 frames
22A recess (second recess)
22B recess (first recess)
23A vertical wall 23B inclined wall 30B exhaust manifold
32 precleaner
33 Air cleaner 40 DPF unit 50 Connection pipe 61 Exhaust pipe (tape pipe)
61A Exhaust pipe (first tape pipe)
61B Exhaust pipe (second tape pipe)
62 Cover 62A Opening
63 guard

Claims (3)

A threshing device (5) for threshing cereals is provided on one side of the machine body, and a grain tank (6) having a drainage auger (8) is provided on the other side of the machine body for storing threshed grains. The combine which arrange | positioned the 1st threshing apparatus (14) which connects the lower part of the said threshing apparatus (5), and the upper part of a grain tank (6) in the site | part between this threshing apparatus (5) and a grain tank (6) In the lower part of the Glen tank (6), an inclined wall (23B) that is inclined downward toward the left and right sides is formed, and an engine (9) is disposed in front of the Glen tank (6). The precleaner (32) is connected to the air cleaner (33) connected to 9) , and the exhaust gas of the engine (9) is supplied to the exhaust manifold (30B) of the engine (9) via the connection pipe (50). Inlet of DPF unit (40) to be purified Connected, said the outlet of the DPF unit (40), the purified exhaust gas is connected to the tail pipe (6 1) for discharging to the outside of the apparatus, the DPF unit (40), the inclined walls in a plan view It was placed in the middle portion of the left and right direction (23B), along the said inclined wall as well as positioned in the first concave portion (22B) formed in the base portion of the inclined wall (23B) of the tail pipe (6 1) (23B) The tail pipe (61) is formed by a lower first tail pile (61A) and an upper second tail pipe (61B), and the second tail pipe (61B) is formed as a first tail. The base of the first tail pipe (61A) is connected to the discharge port of the DPF unit (40), and the base of the first tail pile (61A) is connected to the discharge port of the DPF unit (40). The first tail pie The base of the second tail pipe (61B) having an inner diameter larger than the outer diameter of the outlet of the pipe (61A) is connected, and the outer peripheral surface of the outlet of the first tail pipe (61A) and the second tail pipe (61B) ) Is provided with a predetermined gap between the inner peripheral surface of the base portion and a diffuser that draws in outside air is formed, and the upper end portion of the tail pipe (61) is disposed above the Glen tank (6) , the tail pipe A cover (62) having an opening (62A) facing the rear of the fuselage and preventing rainwater from entering the tail pipe (61) is disposed at the exhaust port at the upper end of (61). The central position of the opening (62A) in the vertical direction is arranged at a position higher than the intake of the pre-cleaner (32), and the exhaust gas discharged from the exhaust at the upper end of the tail pipe (61) is pre-treated. Cleaner (32) Combine, characterized in that it has a structure to prevent from being sucked. A second recess (22A) in which the first threshing device (14) is arranged is formed in the vertical wall (23A) on the threshing device (5) side of the Glen tank (6), and the second recess (22A). The combine of Claim 1 which has arrange | positioned the upper part of the said tail pipe (61) in the position of the front side of the 1st cerealing apparatus (14) in . A guard (63) that covers the cover (62) from the left and right directions on a frame (16) that supports both ends of the auger receiving frame (8C) that receives the discharge auger (8) and the first cerealing device (14). The left lower end portion of the first cerealing device (14) is supported by the guard (63), the right lower end portion of the guard (63) is supported by the upper end portion of the first cerealing device (14). The combine according to claim 2.