JP2017216886A - combine - Google Patents

Abstract

PROBLEM TO BE SOLVED: To form an air cleaner, a particulate material removing device, and a nitrogen oxide removing device into an assembly beforehand, and improve assemblability.SOLUTION: A combine includes an engine 14, an air cleaner 19 for purifying intake air of the engine 14, a frame member 30 to which the air cleaner 19 is attached, a particulate material removing device 22 for removing a particulate material in exhaust gas discharged from the engine 14, and a nitrogen oxide removing device 23 for removing a nitrogen oxide in the exhaust gas discharged from the engine 14. The particulate material removing device 22 and the nitrogen oxide removing device 23 are attached to the frame member 30 together with the air cleaner 19.SELECTED DRAWING: Figure 4

Description

  The present invention relates to a combine equipped with a particulate matter removing device and a nitrogen oxide purification device.

  Particulate matter removal device (DPF: Diesel Particulate Filter) that removes particulate matter in exhaust gas for the purpose of purifying exhaust gas exhausted from engine, and nitrogen oxide that purifies nitrogen oxide in exhaust gas A combine equipped with a purification device (SCR: Selective Catalytic Reduction) is known. For example, Patent Document 1 discloses a combine in which a particulate matter removing device is disposed in the vicinity of the rear of an engine, and exhaust gas purified by the particulate matter removing device is discharged from the bottom of the machine body to the outside of the machine.

JP2015-128374A

  However, a combine equipped with a particulate matter removal device and a nitrogen oxide purification device not only complicates the assembly around the engine, but also depends on the arrangement of the particulate matter removal device and the nitrogen oxide purification device. There was a possibility that it might fall.

The present invention was created in view of the above circumstances and has been created for the purpose of solving these problems. The invention of claim 1 is directed to an engine, an air cleaner for purifying intake air of the engine, and the air cleaner. A frame member to which the engine is attached, a particulate matter removing device for removing particulate matter in exhaust gas discharged from the engine, and nitrogen oxide purification for purifying nitrogen oxide in exhaust gas discharged from the engine The particulate matter removing device and the nitrogen oxide purification device are attached to the frame member together with the air cleaner.
The invention according to claim 2 is the combine according to claim 1, wherein the frame member includes a horizontal frame connecting the left and right support frames, and the particulate matter removing device and the nitrogen oxide purifying device. Is mounted in a horizontal direction along the horizontal frame.
The invention according to claim 3 is the combine according to claim 1 or 2, further comprising a pretreatment lift frame that supports a pretreatment unit that reaps the stems so as to be movable up and down, and the frame member includes the pretreatment. A urea water tank connected to a lift frame and supplying urea water to the nitrogen oxide purification device is disposed in the vicinity of the pretreatment lift frame.

According to the first aspect of the present invention, since the air cleaner, the particulate matter removing device, and the nitrogen oxide purifying device are attached to the same frame member, the air cleaner, the particulate matter removing device, and the nitrogen oxide purifying device are assembled in advance. Not only can the assembly be improved, but also the mutual gap management becomes easier. Further, the maintainability of the engine can be improved as compared with the case where the particulate matter removing device or the nitrogen oxide purification device is directly attached to the engine.
According to the second aspect of the present invention, since the particulate matter removing device and the nitrogen oxide purification device are attached horizontally along the horizontal frame of the frame member, the particulate matter removing device and the nitrogen are attached to the frame member. Not only can the oxide purification device be mounted compactly, but also the rigidity of the frame member can be increased by the particulate matter removal device and the nitrogen oxide purification device.
According to the invention of claim 3, since the frame member is connected to the strong pretreatment lift frame, the rigidity of the frame member can be further increased. Moreover, since the urea water tank for supplying urea water to the nitrogen oxide purification device is disposed in the vicinity of the pretreatment lift frame, piping from the urea water tank to the nitrogen oxide purification device is facilitated.

It is a right view of the combine which concerns on embodiment of this invention. It is a top view of the combine which concerns on embodiment of this invention. It is a principal part right view of the combine which concerns on embodiment of this invention. It is a principal part front view of the combine which concerns on embodiment of this invention. (A) is a principal part schematic right side view which shows the arrangement configuration of the combine which concerns on embodiment of this invention, (B) is a principal part schematic right side view which shows another example. It is a perspective view which shows the frame member of the combine which concerns on embodiment of this invention.

  Hereinafter, embodiments of the present invention will be described with reference to the drawings. 1 and 2, reference numeral 1 denotes a combine. The combine 1 is connected to a traveling machine body 4 having a crawler type traveling unit 3 below a machine body frame 2 and a front part of the traveling machine body 4 so as to be movable up and down. And a threshing unit 6 that is arranged on the left side of the traveling machine body 4 and that threshs and sorts the grains from the stems that the preprocessing unit 5 cuts, and a threshing part that is arranged on the right side of the traveling machine body 4. A grain tank 7 for storing the grain selected by 6, a discharge auger 8 for discharging the grain in the grain tank 7 to the outside of the machine, and a front side of the grain tank 7 on the right side of the traveling machine body 4. The operation part 9 to be provided.

  The grain tank 7 of the present embodiment is configured to be rotatable outwardly of the machine body with the vertical pipe 8a of the discharge auger 8 as a fulcrum, and when the grain tank 7 is rotated outwardly of the machine body, the threshing unit 6 is provided. The right side of the head is exposed, and maintenance of the exposed portion (for example, a threshing transmission mechanism) is facilitated.

  The driving unit 9 of the present embodiment includes a cabin 10 that covers the driving space. In the driving space that is covered with the cabin 10, a driving seat 11 on which an operator sits and various operation tools are arranged. The cabin 10 that covers the driving space includes a sliding door 12 that opens and closes the entrance and a window that can be opened and closed. For example, on the rear upper end side of the cabin 10, there is provided an outwardly opening rear window 13 that can be opened and closed by turning about the upper end portion (see FIG. 5B).

  As shown in FIGS. 3 and 4, an engine room 15 that houses the engine 14 is configured in the lower rear of the driver seat 11 and in front of the grain tank 7. A radiator 16 and a cooling fan 17 are disposed in the vicinity of the right side of the engine 14, and engine cooling air is introduced into the engine room 15 from the right side of the machine body via the dust net 15 a according to the driving of the cooling fan 17. . Since the engine room 15 is covered at the front and rear and is open on the left side, the engine cooling air introduced into the engine room 15 passes through the radiator 16 and then passes mainly around the engine 14 to the engine. It is discharged to the left side of the room 15.

  The engine 14 is connected to an intake path for introducing the intake air from the outside of the machine and an exhaust path for discharging the exhaust gas to the outside of the machine. A pre-cleaner 18 and an air cleaner 19 are provided in the intake path, and outside air purified by the pre-cleaner 18 is connected via an intake connection pipe 20 that connects the intake outlet of the pre-cleaner 18 and the intake inlet of the air cleaner 19. While being sucked into the air cleaner 19, the air purified by the air cleaner 19 is sucked into the engine 14 via an intake pipe 21 that connects the intake outlet of the air cleaner 19 and the intake port of the engine 14.

  A particulate matter removing device 22 and a nitrogen oxide purifying device 23 are provided in the exhaust path, and the exhaust gas of the engine 14 connects the exhaust port of the engine 14 and the exhaust inlet of the particulate matter removing device 22. The exhaust gas discharged to the particulate matter removing device 22 through the exhaust pipe 24 and purified by the particulate matter removing device 22 is exhausted from the exhaust outlet of the particulate matter removing device 22 and the nitrogen oxide purifying device 23. The exhaust gas is discharged to the nitrogen oxide purifying device 23 through an exhaust connection pipe 25 connecting the inlet. The exhaust gas purified by the nitrogen oxide purification device 23 is discharged outside the machine through a tail pipe 26 having one end connected to the exhaust outlet of the nitrogen oxide purification device 23 and the other end having an exhaust outlet 26a. Is done.

  Incidentally, the pre-cleaner 18 is a device that generates a vortex by the force of the intake air and separates large dust in the intake air, and the air cleaner 19 is a device that filters the intake air by a replaceable element. The particulate matter removing device 22 is a device that removes particulate matter in the exhaust gas, and removes the collected particulate matter by combustion or the like in order to eliminate clogging caused by the collected particulate matter. Reproducing means is provided. The nitrogen oxide purifying device 23 is a device that purifies nitrogen oxide in exhaust gas. Specifically, urea water is injected into the exhaust gas, and nitrogen oxide contained in the exhaust gas is converted into nitrogen, water vapor, or the like. To be rendered harmless.

  Next, the arrangement of the particulate matter removing device 22, the nitrogen oxide purifying device 23, the tail pipe 26 (exhaust outlet 26a), the precleaner 18 and the air cleaner 19 will be described with reference to FIGS.

  The particulate matter removing device 22 and the nitrogen oxide purifying device 23 are disposed above the engine 14 and in a space S between the driver's seat 11 and the grain tank 7. In this way, while avoiding the length of piping for connecting the particulate matter removing device 22 and the nitrogen oxide purifying device 23 to the engine 14, the sides of the engine 14 (the front side of the engine 14 and the fuselage). A maintenance space can be secured in the rear (including the rear side), and the maintainability of the engine 14 can be improved. Further, according to such an arrangement, the particulate matter removing device 22 and the nitrogen oxide purifying device 23 can be separated from the threshing unit 6, so that the sawdust generated from the threshing unit 6 is removed from the particulate matter removing device 22. In addition, it is possible to suppress the deposits on the nitrogen oxide purifying device 23 and to reduce the possibility that the sawdust is heated by the heat of the particulate matter removing device 22 and the nitrogen oxide purifying device 23.

  The space S in which the particulate matter removing device 22 and the nitrogen oxide purifying device 23 are arranged communicates with the engine room 15 that houses the engine 14. If it does in this way, ambient temperature of particulate matter removal device 22 and nitrogen oxide purification device 23 can be lowered using engine cooling wind introduced into engine room 15 by cooling fan 17. In the present embodiment, as shown in FIG. 4, the engine cooling air introduced by the cooling fan 17 is arranged by disposing the particulate matter removing device 22 and the nitrogen oxide purifying device 23 inside the airframe from the cooling fan 17. The cooling effect of the particulate matter removing device 22 and the nitrogen oxide purifying device 23 is enhanced.

  Further, the particulate matter removing device 22 and the nitrogen oxide purifying device 23 have a substantially cylindrical outer shape, and are arranged in a lateral direction along the vehicle width direction and in a vertically parallel manner. If it does in this way, the particulate matter removal apparatus 22 and the nitrogen oxide purification apparatus 23 will be arrange | positioned compactly, and the space S between the driver's seat 11 and the grain tank 7 can be used effectively. In the present embodiment, when the particulate matter removal device 22 and the nitrogen oxide purification device 23 are arranged in parallel vertically, the particulate matter removal device 22 is arranged on the lower side and the nitrogen oxide purification device 23 is placed on the upper side. However, the particulate matter removing device 22 may be disposed on the upper side, and the nitrogen oxide purifying device 23 may be disposed on the lower side.

  In the present embodiment, not only the particulate matter removing device 22 and the nitrogen oxide purifying device 23 but also the air cleaner 19 are arranged in the space S between the driver seat 11 and the grain tank 7. . The air cleaner 19 of the present embodiment has a substantially cylindrical outer shape, similar to the particulate matter removing device 22 and the nitrogen oxide purifying device 23, and is in a horizontal direction along the vehicle width direction, and the particulate matter removing device 22. Moreover, the space S between the driver's seat 11 and the grain tank 7 can be used more effectively by arranging in parallel with the nitrogen oxide purification device 23.

  Further, the air cleaner 19 is disposed closer to the driver seat 11 than the particulate matter removing device 22 and the nitrogen oxide purifying device 23 in the space S between the driver seat 11 and the grain tank 7. If it does in this way, the particulate matter removal apparatus 22 and the nitrogen oxide purification apparatus 23 will be separated from the driver's seat 11, and the fall of the working environment by the heat | fever of the particulate matter removal apparatus 22 and the nitrogen oxide purification apparatus 23 can be suppressed. Further, the air cleaner 19 is disposed so as to be displaced from the particulate matter removing device 22 and the nitrogen oxide purifying device 23 in the vehicle width direction. Specifically, by disposing the air cleaner 19 on the outer side of the airframe than the particulate matter removing device 22 and the nitrogen oxide purifying device 23, not only the replacement of the elements becomes easy, but also the particulate matter removing device 22 and the nitrogen oxidation device. Since a gap can be ensured between the material purification device 23 and the air cleaner 19, the influence of the heat that the air cleaner 19 receives from the particulate matter removal device 22 and the nitrogen oxide purification device 23 can be reduced, or the air cleaner 19 and the particulate matter removal. The piping of the pipes connected to the device 22 and the nitrogen oxide purification device 23 is facilitated. In particular, when the air cleaner 19 is disposed outside the airframe from the particulate matter removing device 22 and the nitrogen oxide purifying device 23, the air cleaner 19 is upstream of the particulate matter removing device 22 and the nitrogen oxide purifying device 23 in the engine cooling air flow path. Therefore, it is possible to further reduce the influence of the heat that the air cleaner 19 receives from the particulate matter removing device 22 and the nitrogen oxide purifying device 23.

  An exhaust outlet 26 a of the tail pipe 26 is disposed above the grain tank 7. For example, the tail pipe 26 of the present embodiment extends obliquely upward and rearward from the exhaust outlet of the nitrogen oxide purification device 23 disposed in front of the grain tank 7, and the tip side is along the upper surface of the grain tank 7. The exhaust outlet 26a at the tip is arranged above the grain tank 7 by facing backward. In this way, since the tail pipe 26 is separated from the threshing portion 6, the waste generated from the threshing portion 6 is accumulated on the tail pipe 26, or the accumulated waste can be heated by the heat of the tail pipe 26. Can be reduced. Further, since the tail pipe 26 is disposed at a high position, mud does not adhere to the tail pipe 26 and clogging occurs even in fields such as wet fields where the crawler sinks.

  Further, the exhaust outlet 26 a of the tail pipe 26 is disposed on the outer side of the machine body from the center position in the vehicle width direction of the grain tank 7. For example, the exhaust outlet 26 a of this embodiment is disposed above the right end of the grain tank 7. In this way, since the exhaust outlet 26a can be reliably separated from the threshing portion 6 disposed adjacent to the inside of the machine body of the grain tank 7, it is possible not only to more reliably prevent accumulation of swarf on the tail pipe 26, When the threshing unit 6 is maintained, the possibility that the tail pipe 26 becomes an obstacle can be reduced. Further, according to the arrangement configuration of the exhaust outlet 26a, not only can the opening and closing of the rear window 13 be prevented by the tail pipe 26, but also the rear view from the rear window 13 can be prevented from being blocked by the tail pipe 26. It can be avoided that the exhaust gas discharged from the exhaust outlet 26 a is discharged toward the gear case 8 b of the discharge auger 8.

  Moreover, although the exhaust outlet 26a of this embodiment may be circular, as shown to FIG. 5 (B), it is good also as a crushed shape where width is wide compared with height. In this way, it is possible not only to promote the diffusion of exhaust heat, but also to prevent the entry of small animals.

  The precleaner 18 is disposed on the rear upper side of the air cleaner 19. This position is lower than the exhaust outlet 26a of the tail pipe 26, and the possibility that exhaust gas discharged from the exhaust outlet 26a of the tail pipe 26 is sucked into the precleaner 18 can be reduced.

  The precleaner 18 is disposed at a position lower than the rear window 13. If it does in this way, possibility that opening and closing of back window 13 will be prevented by precleaner 18 can be reduced.

  By the way, in the combine 1 of this embodiment, in order to eliminate the clogging of the dust-proof net 18, the cooling fan 17 is periodically reversed to have a function of blowing off dust and dust adhering to the dust-proof net 18. When the reverse rotation control of the cooling fan 17 is executed with the door 12 opened, the hot air discharged from the engine room 15 may bounce off the inner surface of the door 12 and be sucked into the precleaner 18. Therefore, the pre-cleaner 18 of this embodiment is arrange | positioned in the rearmost position in the front space of the grain tank 7 so that it may not overlap with the open door 12 as much as possible in side view.

  Next, the cover member 27 will be described with reference to FIGS.

  The combine 1 includes a cover member 27 that covers the tail pipe 26. According to such a cover member 27, it is possible to reduce the possibility of contact with the tail pipe 26 that becomes high temperature, and it is possible to protect the tail pipe 26 with the cover member 27.

  The cover member 27 of the present embodiment includes an upper surface cover portion 27a that covers the top of the tail pipe 26, a front cover portion 27b that covers the front of the tail pipe 26 and the nitrogen oxide purification device 23, and the tail pipe 26 and the nitrogen oxide purification. A left side cover portion 27c covering the left side of the device 23 and a right side cover portion 27d covering the right side of the tail pipe 26 and the nitrogen oxide purifying device 23 are integrally provided.

  The lower portion of the cover member 27 communicates with the engine room 15, while the upper portion of the cover member 27 is formed with an opening 27 e that exposes the exhaust outlet 26 a of the tail pipe 26. Thereby, the cover member 27 guides the engine cooling air introduced into the engine room 15 by the cooling fan 17 to the nitrogen oxide purification device 23 and the tail pipe 26 to cool the nitrogen oxide purification device 23 and the tail pipe 26. The engine cooling air after cooling can be discharged from the opening 27e.

  As shown in FIG. 4, the right side cover portion 27 d of the cover member 27 is provided so as to partition the tail pipe 26 and the precleaner 18 and cover the top of the precleaner 18. If it does in this way, not only can the temperature rise of the intake air by the heat of the tail pipe 26 be avoided, but also the possibility that the sawdust generated from the threshing part 6 is sucked into the precleaner 18 can be reduced.

  The front cover portion 27b of the cover member 27 is preferably arranged so as not to contact the tip portion of the rear window 13 when the rear window 13 is opened and closed. For example, the front cover portion 27b having the shape shown in FIG. 5A comes into contact with the front end portion of the rear window 13 during opening and closing, and obstructs the opening and closing of the rear window 13, but the front cover shown in FIG. If the shape follows the tip turning locus of the rear window 13 as in the portion 27b, contact with the tip of the rear window 13 during opening and closing can be avoided. In the embodiment shown in FIG. 5B, a heat shield plate 28 that covers the periphery of the air cleaner 19 is provided. According to such a heat shield plate 28, the particulate matter removing device 22 and the nitrogen oxidation device are provided. It is possible to suppress the temperature of the intake air in the air cleaner 19 from rising due to the heat of the material purification device 23.

  Next, the frame member 30 will be described with reference to FIGS.

  A frame member 30 is erected in the engine room 15. The frame member 30 includes left and right column frames 30a and 30b that are erected with a predetermined interval in the vehicle width direction, upper and lower horizontal frames 30c and 30d that connect the left and right column frames 30a and 30b, and a left column. An extension frame 30e that extends forward and downward from a connecting portion between the frame 30a and the lower lateral frame 30d is integrally provided.

  A pre-cleaner support portion 31 to which the pre-cleaner 18 can be attached is provided at the upper end portion of the right column frame 30a, and an air cleaner support portion 32 to which the air cleaner 19 can be attached to the upper lateral frame 30c, and a nitrogen oxide purification device. 23 is provided with a nitrogen oxide purification device support portion 33 to which 23 can be attached, and further, a particulate matter removal device support portion 34 to which the particulate matter removal device 22 can be attached is provided on the lower lateral frame 30d. Yes. According to such a frame member 30, the pre-cleaner 18, the air cleaner 19, the particulate matter removing device 22 and the nitrogen oxide purifying device 23 are assembled in advance, and these can be integrally attached to the traveling machine body 4. As compared with the case where the air cleaner 19, the particulate matter removing device 22 and the nitrogen oxide purifying device 23 are individually attached to the traveling machine body 4, not only the assembling property can be improved, but also the mutual clearance management becomes easy. Further, as compared with the case where the particulate matter removing device 22 and the nitrogen oxide purification device 23 are directly attached to the engine 14, a maintenance space can be secured around the engine 14 and the maintainability of the engine 14 can be improved.

  The air cleaner 19, the particulate matter removing device 22, and the nitrogen oxide purification device 23 are attached sideways along the horizontal frames 30 c and 30 d of the frame member 30. In this way, not only the air cleaner 19, the particulate matter removing device 22 and the nitrogen oxide purifying device 23 can be compactly attached to the frame member 30 but also the particulate matter removing device 22 and the nitrogen oxide purifying device 23. The rigidity of the frame member 30 can be increased.

  Fixing portions 30f, 30g, and 30h for fastening and fixing to the traveling machine body 4 are integrally provided at lower ends of the left column frame 30a, the right column frame 30b, and the extension frame 30e, respectively. The first fixing portion 30f provided at the lower end portion of the left column frame 30a and the second fixing portion 30g provided at the lower end portion of the right column frame 30b are fastened and fixed to the strong aircraft frame 2 that supports the traveling vehicle body 4, The third fixing portion 30h provided at the lower end of the extension frame 30e is fastened and fixed to a strong pretreatment lift frame 35 that supports the pretreatment portion 5 so as to be movable up and down.

  The pretreatment lift frame 35 is erected on the left front end portion of the machine body frame 2, and the left and right shaft support portions 35 a and 35 b provided on the upper end portion thereof rotate the support shaft (not shown) of the pretreatment portion 5. Is rotatably supported. In the vicinity of the pretreatment lift frame 35, a urea water tank 36 for supplying urea water to the nitrogen oxide purification device 23 is disposed. According to such an arrangement configuration of the urea water tank 36, when the piping for supplying urea water from the urea water tank 36 to the nitrogen oxide purification device 23 is routed, the piping is connected to the extension frame 30e, the left column. It can be easily routed along the frame 30a and the upper lateral frame 30c.

According to the present embodiment configured as described, the air cleaner 19, the particulate matter removing device 22 and the nitrogen oxide purifying device 23 are attached to the same frame member 30, so that the air cleaner 19, the particulate matter removing device 22 and The nitrogen oxide purification device 23 can be assembled in advance to improve assemblability, and mutual gap management is facilitated. Further, the maintainability of the engine 14 can be improved as compared with the case where the particulate matter removing device 22 and the nitrogen oxide purifying device 23 are directly attached to the engine 14.

  Further, since the particulate matter removing device 22 and the nitrogen oxide purifying device 23 are attached sideways along the horizontal frames 30c and 30d of the frame member 30, the particulate matter removing device 22 and the nitrogen oxidation device are attached to the frame member 30. Not only can the material purification device 23 be attached in a compact manner, but also the rigidity of the frame member 30 can be increased by the particulate matter removal device 22 and the nitrogen oxide purification device 23.

  Further, since the frame member 30 is coupled to the strong pretreatment lift frame 35, the rigidity of the frame member 30 can be further increased. Further, since the urea water tank 36 for supplying urea water to the nitrogen oxide purification device 23 is disposed in the vicinity of the pretreatment lift frame 35, piping from the urea water tank 36 to the nitrogen oxide purification device 23 is easy. Become.

DESCRIPTION OF SYMBOLS 1 Combine 5 Pretreatment part 6 Threshing part 7 Grain tank 11 Driver's seat 14 Engine 15 Engine room 18 Precleaner 19 Air cleaner 22 Particulate matter removal apparatus 23 Nitrogen oxide purification apparatus 26 Tail pipe 26a Exhaust outlet 27 Cover member 30 Frame member 30a, 30b Prop frame 30c, 30d Horizontal frame 35 Pretreatment lift frame 36 Urea water tank S Space

Claims (3)

Engine,
An air cleaner for purifying the intake air of the engine;
A frame member to which the air cleaner is attached;
A particulate matter removing device for removing particulate matter in exhaust gas discharged from the engine;
A nitrogen oxide purification device for purifying nitrogen oxide in exhaust gas discharged from the engine,
The combine, wherein the particulate matter removing device and the nitrogen oxide purification device are attached to the frame member together with the air cleaner. The frame member includes a horizontal frame connecting the left and right support frames;
The combine according to claim 1, wherein the particulate matter removing device and the nitrogen oxide purification device are attached horizontally along the horizontal frame. It has a pre-treatment lift frame that supports the pre-treatment part that reaps pedicles so that it can be raised and lowered,
The frame member is coupled to the pretreatment lift frame;
The combine according to claim 1 or 2, wherein a urea water tank for supplying urea water to the nitrogen oxide purification device is disposed in the vicinity of the pretreatment lift frame.

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