JP2019062776A - Combine - Google Patents

Abstract

To provide a combine in which an exhaust side purifier including a first purifying part, a second purifying part, and a connection pipe for connecting the first purifying part and the second purifying part, and an intake side purifier including an air cleaner are efficiently arranged, and waste straws and the like accumulated in the reaping work are prevented from being heated by the heat of exhaust gas.SOLUTION: An exhaust side purifier 42 for purifying exhaust gas from an engine 29 installed in an engine room 31 formed below an operation part 21 includes a first purifying part 36, a second purifying part 37, and a connection pipe 39. An intake side purifier 43 for purifying air sucked in the engine 29 includes an air cleaner 34. The air cleaner 34, the first purifying part 36, and the second purifying part 37 are arranged laterally in the engine room 29, and the connection pipe 38 is arranged in the engine room 31 and its principal part is arranged in a lateral direction.SELECTED DRAWING: Figure 5

Description

  The present invention relates to a combine that purifies and discharges exhaust gas.

  An engine installed in an engine room formed below a steering unit on which an operator gets in, an exhaust side purification device for purifying exhaust gas from the engine, and an intake side purification device for purifying air drawn into the engine The exhaust side purification device includes a first purification unit for purifying exhaust gas exhausted from an engine, a second purification unit for further purifying the exhaust gas purified by the first purification unit, and A combine shown in Patent Document 1 has been known which has a connecting pipe for connecting exhaust gas purified by the first purification section so as to introduce the exhaust gas into the second purification section.

  According to the combine of the above document, the purification function is improved by the functions of the first purification unit and the second purification unit, and the first purification unit, the second purification unit, and the connecting pipe are utilized by utilizing the empty space around the glen tank. Can be arranged efficiently.

  However, in the combine according to the above configuration, chips and the like tend to be deposited around the gren tank during the reaping operation, and there is a possibility that the deposited chips may be heated by the exhaust side purification device heated to a high temperature by the exhaust gas. Further, the above document does not disclose or suggest the arrangement configuration of the air cleaner that constitutes at least a part of the intake side purification device.

Patent No. 57 61402 (FIG. 1-22)

  The present invention efficiently provides an exhaust side purification apparatus including a first purification unit and a second purification unit, and a connection pipe connecting the first purification unit and the second purification unit, and an intake side purification apparatus including an air cleaner. It is an object of the present invention to provide a combine that is arranged and prevents heating of chips and the like accumulated during reaping work by the heat of exhaust gas.

  In order to solve the above problems, it is a combine that purifies and discharges the exhaust gas, and purifies the exhaust gas from the engine installed in the engine room formed below the steering unit on which the operator gets in, and the engine An exhaust side purification device and an intake side purification device for purifying air taken into the engine, the exhaust side purification device comprising: a first purification unit for purifying exhaust gas exhausted from the engine; There is a second purification unit that further purifies the exhaust gas purified by the purification unit, and a connection pipe that connects the two so that the exhaust gas purified by the first purification unit is introduced to the second purification unit. The intake side purification device has an air cleaner, and the first purification unit, the second purification unit, the connection pipe, and the air cleaner are disposed in an engine room, and the air cleaner, Purifying unit and the second purification member is longitudinally oriented in the transverse direction is the width direction of the machine body, said connection tube is characterized in that the main part is a pipe so as to extend in the lateral direction.

  The air cleaner is disposed on the side of the engine and located immediately above the cooling fan for cooling the engine, and the first purification unit, the second purification unit, and the connection pipe are the cooling fan rather than the air cleaner. It is good also as what is arrange | positioned in the blowing direction downward position of this.

  The first purification unit may be disposed immediately behind the air cleaner at an interval, and the second purification unit may be disposed obliquely above the rear of the air cleaner.

  The first purification unit and the second purification unit are disposed above the engine in a state of being vertically arranged, and the second purification unit discharges exhaust gas purified by itself from above the engine room It may have a structure.

  The connection pipe may be piped in the vicinity of an openable rear wall in an engine room.

  According to the above configuration, since the first purification unit, the second purification unit, the connecting pipe connecting the two, and the air cleaner are arranged horizontally in the engine room in a compact manner, the efficient arrangement is maintained. Also, it is prevented that the chips and the like deposited during the reaping operation are heated by the exhaust gas.

  The air cleaner is disposed on the side of the engine and located immediately above the cooling fan for cooling the engine, and the first purification unit, the second purification unit, and the connection pipe are the cooling fan rather than the air cleaner. Since the air cleaner is efficiently cooled by the cooling fan according to the device disposed at the lower position in the air blowing direction, space saving can be achieved while preventing the air cleaner from being damaged by the heat of the exhaust gas. It will be possible.

  The first purification unit is disposed immediately behind the air cleaner at an interval, and the second purification unit is disposed obliquely above the rear of the air cleaner to form a space above the air cleaner. It is possible to improve the flow of the cooling air from the cooling fan and to prevent the heat cleaner from damaging the air cleaner more efficiently.

  The first purification unit and the second purification unit are arranged above the engine in a state of being vertically arranged, and the second purification unit is configured to discharge the gas purified by itself from the upper side of the engine room According to the engine, it is possible to open the side of the engine, improve the maintainability, and efficiently exhaust the exhaust gas upward.

  According to the connection pipe, which is installed near the openable rear wall in the engine room, access to the connection pipe is facilitated, and maintenance is improved.

FIG. 1 is a right side view of a self-removing combine according to the present invention. FIG. 1 is a left side view of a self-removing combine according to the present invention. FIG. 1 is a plan view of a self-removing combine according to the present invention. It is a left sectional view of a cabin and its circumference. It is a rear view of a cabin and its circumference. It is a principal part perspective view which shows the structure of another embodiment of a combine. It is a back sectional view showing a support structure of an extension exhaust pipe. It is a top view which shows the structure of the extension exhaust pipe which concerns on another embodiment. It is a principal part perspective view which shows the structure of a lock release lever.

  1 to 3 are a right side view, a left side view and a plan view of a self-relief combine according to the present invention. The combine shown includes a traveling body (airframe) 2 having a pair of left and right crawler type traveling devices 1L and 1R, and a pretreatment unit 3 connected to the front of the traveling body 2 so as to be able to move up and down.

  The traveling body 2 is provided with a body frame (chassis) 2a supported by the left and right crawler type traveling devices 1L and 1R. On the body frame 2a, a cabin 4 in which an operator gets in, a grain tank 6 for storing grains, and a threshing device 7 are installed. The threshing device 7 is disposed on the left side of the traveling body 2, the grain tank 6 is disposed on the right side of the traveling body 2, and the cabin 4 is disposed in front of the grain tank 6.

  The above pre-processing unit 3 reaps the grain gravel of the field with a reciprocating cutting blade 8 reciprocatingly operated to the left and right during forward traveling of the traveling machine body 2 and transfers the cut grain gravel to the threshing device 7 side by the conveyance mechanism 9 It is configured to be transported backward.

  The above-mentioned threshing device 7 receives the cereal gravel transported backward by the transport mechanism 9 of the pretreatment unit 3 and performs threshing and sorting processing. The crushed grains which have been shredded and discarded are conveyed by the reject conveyance body 11 to the post-processing unit 12 disposed at the rear end portion of the traveling machine body 2 and discharged out of the machine as it is or It is cut off by the processing unit 12 and discharged out of the machine. The processed material that has been crushed from the grain cane is sorted into wastes such as scale and grains such as cane. The waste is discharged to the outside of the machine, while the grain is transported from the threshing device 7 into the gren tank 6 and stored.

  The grain tank 6 can store grains inside, and can discharge grains accumulated inside by the auger 13 extended from the rear end of the traveling airframe 2 to the outside of the machine . The auger 13 has a vertical cylinder 14 in the vertical direction, and a discharge cylinder 16 having the upper end side of the vertical cylinder 14 as a base end and extending linearly from the base end toward the tip. ing.

  At the tip of the discharge cylinder 16, a discharge part 16a for discharging the grain from the grain tank 6 downward is provided. The discharge cylinder 16 can be swung up and down (up and down) as a whole with the base end side as a fulcrum, and the whole can be swung left and right around the axis of the vertical cylinder 14 (right and left rotation). The plane position and height of the discharge part 16a are adjusted by this raising and lowering and left-right turning, and the discharge place of the grain is appropriately changed and adjusted.

  In addition, the gren tank 6 is supported on the side of the body frame 2a so as to be able to turn left and right around a vertical axis (not shown) on the rear end side, and has an open posture for opening the rear side of the cabin 4; It is configured to be switchable from the accommodation posture accommodated on the rear side of the four sides. The gren tank 6 is switched to the accommodation posture at the time of reaping work and other normal times, and is switched to the opening posture at the time of maintenance.

  4 and 5 are a left side sectional view and a rear view of the cabin and its surroundings. The cabin 4 covers the upper side of the control unit 21 installed on the airframe frame 2a by the roof 19 and surrounds the four sides of the control unit 21 by transparent panels. More specifically, an entrance is formed on the right side surface of the cabin 4, and an open / close door 22 is provided at the entrance so as to be freely opened and closed.

  The control unit 21 is disposed further forward than the seat 24 on which the operator sits, a floor step (floor surface) 21 a formed at a lower position in front of the seat 24, and the floor 21 a in plan view of the seat 24. The multi-lever 26 has a touch panel 27 for performing various settings and the like, and a shift lever 28 disposed on the side of the seat 24.

  The operator who has turned to the front performs forward / backward switching and shift during forward travel or reverse travel by rocking operation with the shift lever 28 while being attached to or detached from the seat 24 or standing on the floor step 21a. The swing operation of the multi lever 26 in the left and right direction makes left and right turn during forward travel or reverse travel, and the pretreatment unit 3 is raised and lowered by the swing operation of the multi lever 26 in the front and back direction.

  The operator can also perform operations such as left / right turning and raising / lowering of the auger 13 and switching of the presence or absence of grain discharge by the auger 13.

  Below the steering unit 21 (cabin 4) of the above configuration (more specifically, obliquely below the rear of the seat 24), an engine 29 for generating power to drive each part is installed. More specifically, this engine 29 is a diesel engine, and the motive power of this engine 29 is that of the left and right crawler type traveling devices 1L. It is transmitted to the respective units such as the 1R, the pretreatment unit 3 and the threshing device 7 to drive the respective units. Further, air intake to the engine 29 and exhaust of exhaust gas from the engine 29 are performed using the space on the back side of the cabin 4.

  Next, the engine 29 and the configuration around it will be described based on FIGS. 1 to 5.

  An engine room 31 is formed obliquely below the seat 24 (below the steering unit 21), and an engine 29 is installed on the airframe frame 2a in the engine room 31 via an antivibration device 32. On the rear side of the engine 29 in the engine compartment 31, a support frame 33 integrally formed to project upward from the body frame 2a is disposed, and the lateral side of the engine compartment 31 (specifically, the right side) Is removably covered by a removable engine cover 30.

  An air cleaner 34 is disposed in the vicinity of the upper side of the engine 29 in a state in which the longitudinal direction is directed in the lateral direction which is the width direction of the traveling airframe 2 (horizontally placed state). A particulate matter removing device (first cleaning) in a state (longitudinal state) in which the longitudinal direction is oriented in the lateral direction with a predetermined interval at a position immediately behind the air cleaner 34 above the engine 29 Part 36 is arranged. A nitrogen oxide in a state in which the longitudinal direction is directed in the lateral direction (horizontally placed state) with a predetermined interval at an upper rear of the air cleaner 34 and an upper front of the particulate matter removing device 36. A purification device (second purification unit) 37 is disposed.

  Incidentally, the air cleaner 34, and the particulate matter removing device 36 and the nitrogen oxide purification device 37 which are disposed in line up and down are supported by the support frame 33 so as to be accommodated in the engine room 29.

  The particulate matter removing device 36 is configured by DPF (registered trademark). The DPF has a supplementary filter that supplements particulate matter (PM) such as soot contained in the exhaust gas. Usually, DPF integrates DOC and capture filter. DOC is a three-way catalyst that purifies harmful substances (specifically, hydrocarbons, carbon monoxide, nitrogen oxides) contained in the exhaust gas discharged from the engine 29 by an oxidation / reduction reaction. It is configured. The DPF, in which the DOC and the capture filter are integrated, is configured to capture PM in the exhaust gas purified by the three-way catalyst oxidation / reduction reaction by the capture filter.

  The particulate matter removing device 36 is connected to the engine 29 by an exhaust side engine connection pipe 38.

  Specifically, the particulate matter removing device 36 and the air cleaner 34 disposed in front of the particulate matter removing device 36 are offset so that the positions in the lateral direction are offset from each other in rear view. In other words, the air cleaner 34 is offset from the particulate matter removing device 36 to the left and right outer sides (specifically, the right side) of the airframe which is one side (offset side) in the lateral direction in rear view.

  According to the arrangement configuration, a piping space S1 in which the particulate matter removing device 36 does not exist is formed directly behind the offset side portion of the air cleaner 34 (the left and right outer portions of the traveling machine body 2; right side in the illustrated example). A piping space where the air cleaner 34 does not exist in front of a portion (non-offset side) opposite to the offset side of the particulate matter removing device 36 (a left and right inner portion of the traveling airframe 2 and left in the example shown) S2 is formed.

  An inlet 36 a for introducing exhaust gas from the engine 29 is formed on the front side of the particulate matter removing device 36 in contact with the piping space S 2. On the other hand, the exhaust gas purified by the particulate matter removing device 36 is led to the offset side portion (the left and right outer portions of the traveling machine body 2 and the right side in the illustrated example) on the upper surface of the particulate matter removing device 36 The lead-out portion 36 b is formed.

  The exhaust side engine connection pipe 38 is the non-offset side portion at the upper and front portions of the engine 29 (the left and right inner portions of the traveling body 2 in the illustrated example) using the piping space S2. It is piped between the exhaust manifold (exhaust part) 29 a formed in the above and the introduction part 36 a of the particulate matter removing device 36 to connect both parts. As described above, the exhaust-side engine connection pipe 38 in which at least a part (most part in the illustrated example) is piped to the pipe space S2 extends obliquely upward toward the rear.

  Incidentally, the particulate matter removing device 36 exhausts high-temperature exhaust gas from the engine 29 when the trapping filter is clogged and the function of capturing the particulate matter is reduced, and the high-temperature exhaust gas supplements the high-temperature exhaust gas. It is possible to burn the deposit adhering to the filter and perform a filter regeneration process to regenerate the function of the supplementary filter. This process may be automatically performed by a microcomputer such as an ECU when clogging is recognized by detection of a pressure difference between the downstream side and the upstream side of the supplementary filter or more.

  The nitrogen oxide purification device 37 is a urea SCR (Selective Catalytic Reduction), and the lateral position substantially coincides with the particulate matter removal device 36. The nitrogen oxide purifier 37 focuses on the fact that ammonia reduces nitrogen oxides to nitrogen gas and water, and injects the urea stored in the urea tank 35a (see FIG. 1) into the exhaust gas to make the ammonia A gas is generated, and the nitrogen oxide is reduced and purified by oxidation with this ammonia gas. Incidentally, the urea tank 35a is disposed on the side of the grain tank 6 on the machine frame 2a.

  The nitrogen oxide purification device 37 is connected to the particulate matter removal device 36 in the engine room 31 by a connection pipe 39 which is disposed immediately behind the nitrogen oxide purification device 37.

  The exhaust gas purified by the particulate matter removing device 36 is introduced into the non-offset side portion (the left and right inner portion of the traveling airframe 2 in the illustrated example, the left portion) on the back surface of the nitrogen oxide purification device 37 A longitudinal introduction portion 37a is formed. On the other hand, in the offset side portion (the left and right outer portions of the traveling machine body 2 and the right side portion in the illustrated example) on the upper surface of the nitrogen oxide purification device 37, the vertically extending outlet portion 37b for extracting exhaust gas purified by itself. Is formed.

  The connection pipe 39 is connected between the outlet 36 b of the particulate matter removing device 36 and the inlet 37 a of the nitrogen oxide purification device 37 to connect the two parts. The connecting pipe 39 has a vertical pipe (vertical part) 39a extending upward from the lead-out part 36b, and a horizontal pipe (horizontal part) 39b extending to the non-offset side in the horizontal direction from the upper end of the vertical pipe 39a. ing.

  The non-offset side end of the horizontal pipe 39b is connected to the introduction section 37a, and the offset side of the horizontal pipe 39b is an end of a urea pipe 35b for introducing urea from the urea tank 35a into the connection pipe 39. Is connected. That is, urea is mixed in the exhaust gas before being introduced into the nitrogen oxide purification device 37.

  A tail pipe (exhaust pipe) 41 extends upward and rearward from the outlet portion 37 b of the nitrogen oxide purification device 37. At an upper end portion which is an extension side end portion of the tail pipe 41, an exhaust port 41a for exhausting exhaust gas cleansed by the completion of purification of nitrogen oxides by the nitrogen oxide purification device 37 to the outside, An opening is formed in a state where the discharge direction is directed rearward and obliquely upward. The exhaust port 41 a is disposed immediately above the glen tank 6 at the rear of the cabin 4. In other words, the tail pipe 41 is formed to project rearward to a position overlapping with the glen tank 6 in plan view.

  Further, the tail pipe 41 is inclined rearward and laterally outward (rightward) from the nitrogen oxide purification device 37 side upward from the nitrogen oxide purification device 37 side, and further, the extension side end portion is lateral to the inclined portion. It is bent inward and downward to face the rear and obliquely upward to constitute an exhaust port 41a. The exhaust port 41a is located on the left and right outside (specifically, the right) end of the cabin 4 in a rear view.

  The exhaust side engine connection pipe 38, the particulate matter removal device 36, the connection pipe 39, the nitrogen oxide purification device 37 and the tail pipe 41 described above constitute an exhaust side purification device 42 for purifying the exhaust gas.

  On the other hand, the intake side purification device 43 for purifying the air taken into the engine 29 is disposed adjacent to the exhaust port 41a on the left and right and is a precleaner 44 serving as an air intake portion of the air; An intake pipe 46 connecting the air cleaner 34 and the precleaner 44, and an intake side engine connection pipe 47 connecting the air cleaner 34 and the engine 29 are provided.

  The precleaner 44 is disposed in proximity to the left and right inner sides (specifically, the left side) of the traveling body 2 with respect to the exhaust port 41a. The precleaner 44 has a structure for separating large foreign substances contained in the air by the vortex-like air flow formed in the air when the air from the outside is taken in.

  The intake pipe 46 has a vertical portion 46a extending downward from the precleaner 44, and an inclined portion 46b extending obliquely downward and forward and leftward (leftward) from the lower end side of the vertical portion 46a; A vertical portion 46c extending downward from the lower end side of the inclined portion 46b and a horizontal portion 46d extending from the lower end side of the vertical portion 46c toward the non-offset side in the horizontal direction are integrally formed.

  The vertical portion 46a and the inclined portion 46b of the intake pipe 46 are piped to the rear of the tail pipe 41 and cross the tail pipe 41 in a rear view.

  According to the above-described arrangement, the air cleaner 34 is partially wrapped with the particulate matter removing device 36 in a rear view in the rear view. An introduction portion 34a for introducing the sucked air is formed on the back side of the portion of the air cleaner 34 which is to be lapped with the particulate matter removing device 36 in a rear view. On the other hand, on the non-offset side of the air cleaner 34, a lead-out portion 34b for leading out the air cleaned by itself is formed.

  Further, the air cleaner 34 is configured to remove foreign matter in the air introduced from the intake pipe 46 by the filtering action of an element such as a replaceable filter. The foreign matter removed by the air cleaner 34 is smaller in size than the foreign matter removed by the precleaner 44.

  Incidentally, the air cleaner 34 is disposed just above the radiator 48 which cools the cooling water of the engine 29 and the cooling fan 49 which passes the radiator 48 side and takes in the air to the engine 29 side. In the cooling fan 49, the offset side in the lateral direction is the air flow direction upper side, and the non-offset side is the air flow direction lower side.

  A nitrogen oxide purification device 37 is disposed obliquely above the rear of the air cleaner 34, and a connection pipe 39 and a particulate matter removing device 36 are further disposed behind the nitrogen cleaner 37. At least a part of the air cleaner 34 is opened just above it. Therefore, the cooling air flowing by the cooling fan 49 passes through the air cleaner 34 and flows immediately above, thereby efficiently cooling the air cleaner 34. Further, the air cleaner 34 is positioned on the upper side in the air blowing direction with respect to the particulate matter removing device 36, the nitrogen oxide purification device 37 and the connection pipe 39, and the cooling air is efficiently blown.

  Further, the cooling air by the cooling fan 49 described above is a particulate matter removing device 36 disposed in the engine room 31 at a distance substantially right behind the air cleaner 34 at a substantially same height, an air cleaner 34 and particulates. In order to flow between the nitrogen oxide purifier 37 disposed at a distance just above the space between the substance removing device 36 and the air cleaner 34 and flow upward, in combination with the air cleaner 34, The particulate matter removing device 36 and the nitrogen oxide purification device 37 can also be efficiently cooled. Incidentally, the particulate matter removing device 36 and the nitrogen oxide purification device 37 are positioned on the side away from the engine 29 in the engine room 31 by the arrangement configuration.

  Such a cooling structure also prevents various sensors installed on the air cleaner 34, the particulate matter removing device 36, and the nitrogen oxide purification device 37 from being damaged by the heat of the exhaust gas.

  The offset side end of the horizontal portion 46 d of the intake pipe 46 is connected and fixed to the introduction portion 34 a of the air cleaner 34. At least a part of the intake pipe 46 (part of the vertical portion 46c and the horizontal portion 46d) is piped so as to pass through the above-described piping space S1.

  The intake-side engine connection pipe 47 is piped between the lead-out portion 34 b of the air cleaner 34 and the intake portion 29 b formed at the central portion in the lateral direction on the upper surface of the engine 29 to connect both portions. The intake side engine connection pipe 47 is piped such that at least a portion thereof passes through the above-described piping space S2. Incidentally, the exhaust side engine connection pipe 38 is piped on the non-offset side of the intake side engine connection pipe 47.

  According to the piping structure as described above, outside air is taken in from the precleaner 44 disposed above the air cleaner 34, and the air cleaned by the precleaner 44 is transferred to the air cleaner 34 through the intake pipe 46. be introduced. Air cleaned by the air cleaner 34 is introduced into the engine 29 from the air intake portion 29 b via the air intake side engine connection pipe 47.

  In addition, the air cleaner 34, the particulate matter removing device 36 and the nitrogen oxide purification device 37, which are placed horizontally, and the connecting tube 39, the main part of which the horizontal tube 39b faces in the lateral direction, make the engine compartment 31 compact. Housed inside.

  Further, the exhaust side engine connection pipe 38 and the intake side engine connection pipe 47 are also efficiently piped into the engine room 31 using the piping space S2.

  Furthermore, the tail pipe 41, the precleaner 44, the intake pipe 46, and the vertical pipe 39a of the connecting pipe 39 (the connection portion of the connecting pipe 39 with the particulate matter removing device 36) Since it is intensively arrange | positioned on the offset side (The right and left outer side of the traveling body 3 and the right side in the example shown in figure) which is one side of this, efficient arrangement | positioning is attained.

  The tail pipe 41 and the intake pipe 46 also have a structure in which most of the lower side is piped into the engine room 31 and performs intake of air from the upper side of the engine room 31 and exhaust of exhaust gas.

  Further, in the vicinity immediately behind the particulate matter removing device 36 and in the vicinity immediately behind the connecting pipe 39, a part of the rear wall of the engine room 31 is formed and on the side of the airframe frame 2a (supporting frame 31). The cover bodies 51 and 52 which can be attached detachably are arrange | positioned, respectively.

  These cover bodies 51 and 52 have a plurality of (multiple) vent holes or are formed in a mesh shape to ensure air permeability, and the temperature of the particulate matter removing device 36 and the connecting pipe 39 The rise is suppressed. And if these cover bodies 51 and 52 are removed, access to the particulate matter removing device 36 and the connecting pipe 39 becomes possible, and the maintainability is improved.

  Note that, instead of the particulate matter removing device 36 configured by the DPF, only the DOC described above may be provided as the first purification unit.

  Further, the vertical portion 46c of the intake pipe 46 is constituted by an intake hose whose diameter is smaller than that of the other portion of the intake pipe 46, and the vertical portion 46c and the particulate matter removing device 36 which easily becomes hot by exhaust gas. And the nitrogen oxide purifier 37 may be separated. In this case, the connecting portion between the vertical portion 46c and the inclined portion 46b is formed in a shape in which the diameter gradually decreases toward the vertical portion 46c, and the connecting portion between the vertical portion 46c and the horizontal portion 46d is directed toward the horizontal portion 46d. It is molded into a shape in which the diameter gradually increases.

  Moreover, both may be piped so that the intake pipe 46 and the exhaust pipe 41 do not cross in a rear view. In this case, the arrangement order of the precleaner 44 and the exhaust port 41a arranged side by side on the left and right outside of the traveling body 2 is reversed, and the precleaner 44 is disposed on the left and right outside of the exhaust port 41a.

  Next, based on FIG.6 and FIG.7, a different embodiment from the above-mentioned form is demonstrated about another embodiment of a combine.

  FIG. 6 is a main part perspective view showing the configuration of another embodiment of the combine. In this embodiment, the exhaust pipe 41 is piped so that the exhaust port 41a is directed to the rear side on the upper surface side of the grain tank 6, and an extension exhaust pipe extending in the front-rear direction extending rearward from the exhaust port 41a side portion of the exhaust pipe 41 The piping is 53.

  The extension exhaust pipe 53 is formed such that the front and rear ends thereof are open and the diameter of the extension exhaust pipe 53 is larger than the diameter of the exhaust pipe 41. The end of the exhaust pipe 41 on the exhaust port 41a side is fitted and inserted into the opening of the front end of the extension exhaust pipe 53, while the exhaust gas from the exhaust pipe 41 is from the opening of the rear end Will be exhausted.

  FIG. 7 is a back sectional view showing the support structure of the extension exhaust pipe. The extended exhaust pipe 53 is supported and fixed in the vicinity of the upper surface side of the glen tank 6 by a pair of left and right fixing tools 54, 54 as a set, and two or more sets (two in the illustrated example) of fixing tools 54, 54. It is done. Each fixing tool 54 is formed in an L shape in a rear view in contact with the upper surface of the grain tank 6 and the circumferential surface of the extension exhaust pipe 53, respectively.

  Incidentally, a space is formed between the extension exhaust pipe 53 and the upper surface of the grain tank 6 for preventing heat from being transmitted from the extension exhaust pipe 53 to the grain tank 6 side.

  Further, the upper end portion of the side wall 56 on the outer side of the grain tank 6 is extended upward to form a cover portion 56a. The cover portion 56a is such that the middle portion and the upper portion incline upward and downward to the left and right, and covers the outer side and the upper side of the extension exhaust pipe 53 to prevent scraps and the like from coming into contact with the extension exhaust pipe 53. There is.

  According to the combine of this configuration, the space in which the exhaust gas is discharged to the outside is disposed at a large distance rearward from the intake side purification device 43, so the influence of the exhaust gas can be further reduced.

  Next, another embodiment of the combine will be described based on FIGS.

  FIG. 8 is a plan view showing the configuration of an extension exhaust pipe according to another embodiment. In the present embodiment, the extension exhaust pipe 53 is constituted by a fixed cylinder 57 and a movable cylinder 58 disposed in front of the fixed cylinder 57 and movable in the axial direction of itself.

  The fixed cylinder 57 and the movable cylinder 58 are formed in a straight line in the front-rear direction, and both front and rear end sides are open. The diameter of the fixed cylinder 57 is set larger than that of the movable cylinder 58 so that the rear end portion of the movable cylinder 58 can be fitted and inserted. The movable cylinder 53 has a diameter larger than that of the exhaust pipe 41 so that the end on the exhaust port 41 a side of the above-mentioned exhaust pipe 41 can be fitted and inserted into the open front end of the movable cylinder 53. It is formed.

  During the longitudinal movement of the movable cylinder 58, the rear end of the movable cylinder 58 is always fitted in and inserted into the opening of the front end of the fixed cylinder 57. On the other hand, the end on the exhaust port 41 a side of the exhaust pipe 41 is switched to the disconnected state in which it is released from the opening on the front end side of the movable cylinder 58 by the movement of the movable cylinder 58 to the rear position. By the movement of the movable cylinder 58, the connection state in which it is fitted and inserted into the opening on the front end side of the movable cylinder 58 is switched.

  Incidentally, the movable tube 58 is supported movably in its axial direction by a support 59 fixed on the upper surface side of the grain tank 6. The support 59 includes a fixed portion 61 fixed to the upper surface of the gren tank 6 and a plurality of (two in the illustrated example) arranged so as to insert the movable tube 58 slidably in the axial direction. And the annular support portions 62, 63).

  On the side of the support 59, an elastic member 64 such as a tension spring which elastically biases the movable cylinder 58 to the front side, which is the switching side to the connection state, is disposed.

  By switching between the non-connected state and the connected state as described above, it is also possible to switch the above-described accommodation posture of the glen tank 6 to the open posture. Incidentally, with the switching of the gren tank 6 from the open position to the storage position, a lock mechanism (not shown) is automatically switched to the locked state, and the gren tank 6 is locked in the storage position. A lock release lever (lock release operating tool) 66 for releasing the locked state is provided on the front upper surface side of the glen tank 6 (see FIG. 9). By the swing operation of the lock release lever 66, the lock mechanism is switched to the release state where the lock is released.

  The interlock mechanism 67 mechanically couples the lock release lever 66 and the movable cylinder 58 so that switching from the connected state to the non-connected state is performed interlockingly with the switching from the locked state to the released state. It is also good. In the illustrated example, the linkage mechanism 67 is formed of a wire, and the end of the wire 67 is attached to the mounting seat 58a of the movable cylinder 58, and the adjustment mechanism 68 of the wire 67 is attached to the one support 62 described above. It is provided.

2 Running aircraft (airframe)
21 Control (driver's seat)
31 engine room 29 engine 42 exhaust side purification device 43 intake side purification device 36 particulate matter removal device (first purification unit, DPF)
37 Nitrogen oxide purification system (2nd purification unit, urea SCR)
39 connection pipe 34 air cleaner 49 cooling fan

Claims (5)

It is a combine that purifies and discharges the exhaust gas,
An engine installed in an engine room formed below a control unit on which an operator gets in;
An exhaust side purification device for purifying exhaust gas from an engine;
And an intake side purification device that purifies air taken into the engine;
The exhaust side purification apparatus includes a first purification unit that purifies exhaust gas exhausted from an engine, a second purification unit that purifies the exhaust gas purified by the first purification unit, and the first purification unit. And a connecting pipe connecting the two so that the exhaust gas purified by the exhaust gas is introduced to the second purification unit,
The intake side purification device has an air cleaner,
The first purification unit, the second purification unit, the connection pipe, and the air cleaner are disposed in an engine room,
The air cleaner, the first purification unit, and the second purification unit are directed in the lateral direction, the longitudinal direction of which is the width direction of the airframe,
The combine pipe is characterized in that the main part is piped so as to extend in the lateral direction. The air cleaner is disposed on the engine side and directly above a cooling fan that cools the engine.
2. The combine according to claim 1, wherein the first purification unit, the second purification unit, and the connection pipe are disposed at a position downstream of the air cleaner in the blowing direction of the cooling fan. The first purification unit is disposed at an interval directly behind the air cleaner,
The combine according to claim 2 in which said 2nd purification part is arranged in the back slanting upper part of said air cleaner. The first purification unit and the second purification unit are disposed above the engine in a state of being vertically arranged.
The combine according to any one of claims 1 to 3, wherein the second purification unit has a structure for discharging the exhaust gas purified by itself from the upper side of the engine room. The combine according to any one of claims 1 to 4, wherein the connection pipe is piped in the vicinity of an openable rear wall in an engine room.

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