JP2016088377A - Engine device of combine-harvester - Google Patents

Abstract

PROBLEM TO BE SOLVED: To make it possible to reduce interference between an attachment component of an engine or the like and a first case or a second case, and to improve assembly workability and maintenance workability of the first case or the second case.SOLUTION: A combine-harvester equipped with: a reaping machine; a thresher; an engine 14 for driving the reaping machine and the thresher; a first case 61 which removes a particulate substance in exhaust gas of the engine 14; and a second case 62 which removes a nitrogen oxide substance in the exhaust gas of the engine 14. The combine-harvester has a structure equipped with an engine room 92 in which the engine 14 is provided, and is so configured that the first case 61 and the second case 62, which are concurrently connected to each other, are horizontally supported on an upper surface side of the engine room 92.SELECTED DRAWING: Figure 6

Description

  The present invention relates to an engine device such as a combine harvester that harvests cereals planted in a field and collects grains, or a feed combine that harvests cereals for feed and collects it as feed. The present invention relates to a combined engine apparatus including a first case for removing particulate matter in exhaust gas and a second case for removing nitrogen oxide substance in exhaust gas of the engine.

  2. Description of the Related Art Conventionally, a combine as a farm working machine for a farm includes a traveling machine body equipped with an engine, a pair of left and right traveling crawlers (traveling units) is installed on the traveling machine body, and a pair of left and right traveling crawlers are driven and controlled. While cutting the stock of uncut cereal planted in the field with a cutting blade device, transporting the cereal to a threshing device with a cereal conveying device, and threshing the cereal with a threshing device , Configured to collect grain. Conventionally, an exhaust gas purification device that purifies exhaust gas is disposed adjacent to the engine, and is configured to discharge exhaust gas from the engine toward the exhaust gas purification device (see, for example, Patent Document 1). . There is also a technique of providing a first case for removing particulate matter in engine exhaust gas and a second case for removing nitrogen oxide substance in engine exhaust gas (see, for example, Patent Document 2).

JP 2010-63417 A JP 2012-177233 A

  In the prior art, when an exhaust gas purifying device (first case, second case) is installed in an engine room where an engine or a radiator is arranged, an installation space for the exhaust gas purifying device is provided adjacent to the engine or the radiator. There is a structural problem such as that the cooling air passage structure of the engine or the exhaust gas purification case volume is limited.

  Accordingly, the present invention seeks to provide a combined engine device that has been improved by examining these current conditions.

  In order to achieve the above object, a first aspect of the invention according to claim 1 is a reaping device, a threshing device, an engine that drives the reaping device or the threshing device, and a particulate matter in the exhaust gas of the engine. A combine comprising a case and a second case for removing nitrogen oxides in the exhaust gas of the engine, wherein the combine is provided with an engine room in which the engine is installed, and in parallel with an upper surface side of the engine room. The connected first case and second case are configured to be horizontally supported.

  A second aspect of the present invention is the combine according to the first aspect, wherein a grain tank is disposed adjacent to the engine room, and the first and second surfaces of the engine room and the grain tank are arranged over the upper surfaces. One case and a second case are arranged.

  According to a third aspect of the present invention, in the combine according to the second aspect, the first case and the second case are configured as a unit, and the first case and the second case are provided on each upper surface side of the engine room and the grain tank. The case is arranged in the left-right direction.

  According to a fourth aspect of the present invention, in the combine according to the second aspect, the first case and the second case are configured as a unit, and the first case and the second case are provided on each upper surface side of the engine room and the grain tank. The case is arranged in the front-rear direction.

  The invention according to claim 5 is the combine according to claim 1, comprising a grain tank disposed adjacent to the engine room, a grain discharge conveyor for discharging the grains in the grain tank, and a storage position; The grain discharge conveyor is configured to be horizontally swivelable at the grain discharge position, and is parallel to the upper surface side of the upper side of the engine room outside the horizontal swivel movement range of the grain discharge conveyor. The first case and the second case are arranged.

  According to the first aspect of the present invention, a reaping device, a threshing device, an engine that drives the reaping device or the threshing device, a first case that removes particulate matter in the exhaust gas of the engine, and the engine In the combine provided with a second case for removing nitrogen oxides in the exhaust gas of the engine, the engine room is provided with the engine installed therein, and the first connected to the upper surface side of the engine room in parallel. Since the case and the second case are configured to be horizontally supported, the first case and the second case can be fixed to the engine room or the like with a simple case support structure, and the engine room or the like can be secured. By utilizing the frame, the case support strength of the first case and the second case can be easily secured, and the engine accessory and the first case or Can reduce interference with the second case, it can be improved and the assembling workability and maintenance workability of the first case or the second case.

  According to the invention which concerns on Claim 2, it is the structure which arrange | positions a grain tank adjacent to the said engine room, Comprising: The said 1st case and a 2nd case are extended over each upper surface side of the said engine room and a grain tank. Since it is arranged, a sufficient installation space for the first case and the second case can be secured, and each case can be easily attached and detached in maintenance work or repair work, and the first case and the second case. The mounting interval can be kept constant by a simple assembling operation, and the exhaust gas piping structure such as the urea mixing tube between the cases can be simplified.

  According to the invention which concerns on Claim 3, the said 1st case and the 2nd case are comprised as a unit, and the said 1st case and the 2nd case are turned to the left-right direction at each upper surface side of the said engine room and a grain tank. Since it is arranged, the first case and the second case are fixed to a base frame (case fixing body) to form a single component unit, and each case can be simplified in an assembly process near the end of the assembly process. In the case of providing a urea mixing tube that forms ammonia by hydrolysis of urea water, the urea water can be assembled without forming a long connection length between the first case and the second case. The length of the urea mixing tube can be formed to a length necessary for forming ammonia by hydrolysis, and the front-rear width and the left-right width of each case can be compactly formed.

  According to the invention which concerns on Claim 4, the said 1st case and 2nd case are comprised as a unit, and the said 1st case and 2nd case are orient | assigned to the front-back direction on each upper surface side of the said engine room and a grain tank. Since it is arranged, the first case and the second case are fixed to a base frame (case fixing body) to form a single component unit, and each case can be simplified in an assembly process near the end of the assembly process. In the case of providing a urea mixing tube that forms ammonia by hydrolysis of urea water, the urea water can be assembled without forming a long connection length between the first case and the second case. The length of the urea mixing tube can be formed to a length necessary for forming ammonia by hydrolysis, and the front-rear width and the left-right width of each case can be compactly formed.

  According to the invention which concerns on Claim 5, it is equipped with the grain tank arrange | positioned adjacent to the said engine room, and the grain discharge conveyor which discharges the grain in the said grain tank, The said grain is stored in a storage position and a grain discharge position. The grain discharge conveyor is configured to be capable of horizontally swiveling, wherein the first case and the first parallel to the upper side of the engine room outside the horizontal swivel movement range of the grain discharge conveyor Since two cases are arranged, the grain discharge conveyor can be horizontally swung without interfering with the first case or the second case, and the grain discharge workability in the grain tank can be improved.

It is a left view of the normal type combine of embodiment of this invention. It is the same top view. It is the perspective view which looked at the grain tank and the engine room part from the back side. It is the perspective view which looked at the engine part from the back side. It is front explanatory drawing of an engine room part. It is a plane explanatory view of the 1st case and the 2nd case installation part. It is a left view of the normal combine which shows 2nd Embodiment. It is the same top view. It is the perspective view which looked at the grain tank and the engine room part from the back side. It is the perspective view which looked at the engine part from the back side. It is front explanatory drawing of an engine room part. It is a plane explanatory view of the 1st case and the 2nd case installation part which show a 3rd embodiment. It is side surface explanatory drawing of an engine room part. It is a left view of the rear part of a normal type combine.

  DESCRIPTION OF EMBODIMENTS Embodiments embodying the present invention will be described below with reference to the drawings. With reference to FIG. 1, FIG. 2, the whole structure of a normal type combine is demonstrated. In the following description, the left side in the forward direction of the traveling machine body 1 is simply referred to as the left side, and the right side in the forward direction is also simply referred to as the right side. As shown in FIG. 1 and FIG. 2, a traveling machine body 1 supported by a pair of left and right traveling crawlers 2 as traveling portions is provided. At the front portion of the traveling machine body 1, a harvesting device 3 for harvesting the grain cocoon while being harvested is mounted by a single-acting lifting hydraulic cylinder 4 so as to be adjustable up and down around the harvesting rotation fulcrum shaft 4a. A threshing device 5 having a handling cylinder 6 and a grain tank 7 for storing grains taken out from the threshing device 5 are mounted on the traveling machine body 1 side by side. The threshing device 5 is disposed on the left side in the forward direction of the traveling machine body 1, and the grain tank 7 is disposed on the right side in the forward direction of the traveling machine body 1. A swivelable grain discharge conveyor 8 is provided at the rear part of the traveling machine body 1, and the throat throw 9 of the grain discharge conveyor 8 is moved up and down and left and right. It is configured to discharge from the spear throwing port 9 to a truck bed or container.

  An operation cabin 10 is provided on the right side of the cutting device 3 and on the front side of the grain tank 7. In the driving cabin 10, there are disposed a steering handle 11, a driving seat 12, a main transmission lever 43, a sub transmission lever 44, and a work clutch lever 45 for turning on and off the threshing clutch and the cutting clutch. The operation cabin 10 is provided with a step on which an operator gets on, a handle column 46 provided with the steering handle 11, and a lever column 47 provided with the levers 43, 44, 45. A diesel engine 14 as a power source is disposed on the traveling machine body 1 behind the grain tank 7.

  As shown in FIG. 1, left and right track frames 21 are arranged on the lower surface side of the traveling machine body 1. The track frame 21 includes a drive sprocket 22 that transmits the power of the diesel engine 14 to the traveling crawler 2, a tension roller 23 that maintains the tension of the traveling crawler 2, and a plurality of tracks that hold the grounding side of the traveling crawler 2 in a grounded state. A roller 24 and front and rear intermediate rollers 25 that hold the non-grounded side of the traveling crawler 2 are provided. The driving sprocket 22 supports the front side of the traveling crawler 2, the tension roller 23 supports the rear side of the traveling crawler 2, the track roller 24 supports the grounding side of the traveling crawler 2, and the intermediate roller 25 supports the non-traveling crawler 2. Support the ground side.

  As shown in FIGS. 1 and 2, the reaping device 3 includes a feeder house 51 that communicates with the handling port 5 a at the front portion of the threshing device 5, and a horizontally long bucket-shaped grain header 52 that is continuously provided at the front end of the feeder house 51. Prepare. A scraping auger 53 is rotatably supported in the grain header 52. A take-up reel 54 with a tine bar is arranged above the front portion of the take-up auger 53. A clipper-shaped cutting blade 55 is disposed in front of the grain header 52. Left and right weed bodies 56 are provided on the left and right sides of the front part of the grain header 52. In addition, a supply conveyor 57 is provided in the feeder house 51. In addition, the lower surface part of the feeder house 51 and the front end part of the traveling machine body 1 are connected via the lifting hydraulic cylinder 4, and the cutting rotation fulcrum shaft 4a (the supply conveyor 57 shaft serving as the cutting input shaft) is used as the lifting fulcrum. The reaping device 3 moves up and down by a lifting hydraulic cylinder 4.

  With the above-described configuration, the tip side of the uncut grain culm between the left and right weeds 56 is picked up by the take-up reel 54, and the heel side of the uncut cereal meal is cut by the cutting blade 55, and the rotation of the pick-up auger 53. By driving, the harvested cereal grains are collected near the entrance of the feeder house 51 near the center of the left and right width of the grain header 52. The whole amount of the harvested cereal meal of the grain header 52 is conveyed by the supply conveyor 57 and is put into the handling port 5a of the threshing device 5.

  Further, as shown in FIGS. 1 and 2, a grain header 52 is connected to the front portion of the feeder house 51 via a left / right tilt adjustment fulcrum shaft 58 so as to be adjustable in the left / right tilt. There is a hydraulic rolling cylinder 59 for adjusting the horizontal tilt that rotates the grain header 52 around the horizontal tilt adjustment fulcrum shaft 58. The horizontal tilt angle of the grain header 52 is adjusted by the rolling cylinder 59, and the grain header 52, the cutting The blade 55 and the take-up reel 54 are supported horizontally with respect to the field scene.

  Moreover, as shown in FIG. 1, FIG. 2, the handling cylinder 6 is rotatably provided in the handling chamber of the threshing apparatus 5. FIG. The handling cylinder 6 is pivotally supported on a handling cylinder shaft 71 extended in the front-rear direction of the traveling machine body 1. On the lower side of the barrel 6, a receiving net 74 that allows grains to leak is stretched. In addition, a spiral screw blade-shaped intake blade is projected outward in the radial direction on the outer peripheral surface of the front portion of the barrel 6.

  With the above-described configuration, the harvested cereal mash introduced from the handling port 5 a is kneaded between the handling cylinder 6 and the receiving net 74 while being conveyed toward the rear of the traveling machine body 1 by the rotation of the handling cylinder 6. And threshing. The threshing of grains and the like smaller than the mesh of the receiving net 74 leaks from the receiving net 74. The sawdust or the like that does not leak from the receiving net 74 is discharged from the dust outlet 73 at the rear of the threshing device 5 to the field by the conveying action of the handling cylinder 6.

  In addition, a plurality of dust feeding valves (not shown) that adjust the conveying speed of shed grains in the handling chamber are pivotally mounted on the upper side of the handling cylinder 6 so as to be rotatable. By adjusting the angle of the dust feed valve, the conveying speed (residence time) of threshing in the handling chamber can be adjusted according to the variety and properties of the harvested cereal. On the other hand, as the grain sorting mechanism 75 disposed below the threshing device 5, a rocking sorter 76 for specific gravity sorting having a grain pan, a chaff sheave, a grain sheave, and a stroll rack is provided.

  Further, the grain sorting mechanism 75 includes a wind sorting fan 77 for supplying sorting wind to the swing sorter 76 and the like. The threshing that has been threshed by the handling cylinder 6 and leaked from the receiving net 74 is caused by the specific gravity sorting action of the swing sorter 76 and the wind sorting action of the Kara fan 77, and the grain (the most important thing such as a refined grain). In addition, it is configured so as to be selected and extracted into a mixture of grain and straw (second product such as grain with branch stems), and sawdust.

  A first conveyor mechanism 78 and a second conveyor mechanism 79 are provided on the lower side of the swing sorter 76 as the grain sorting mechanism 75. The grain (first thing) dropped from the swing sorter 76 by the sorting of the swing sorter 76 and the tang fan 77 is collected in the grain tank 7 by the first conveyor mechanism 78 and the cereal conveyor 80. The mixture of grain and straw (second product) is returned to the threshing start end side of the handling cylinder 6 through the second conveyor mechanism 79 and the second reduction conveyor 81 and is threshed by the handling cylinder 6 again. The sawdust and the like are configured to be discharged from the dust outlet 73 at the rear of the traveling machine body 1 to the field.

  Next, referring to FIGS. 3 to 6, the diesel engine 14, a first case 61 (diesel particulate filter, DPF) as an exhaust gas purification device, a second case 62 (selective catalyst reduction, SCR) and its The mounting structure will be described. A first case 61 as a diesel particulate filter (DPF) that removes particulate matter in the exhaust gas of the diesel engine 14 and urea selective catalytic reduction (SCR) that removes nitrogen oxides in the exhaust gas of the diesel engine 1 A second case 62 as a system is provided. As shown in FIG. 6, an oxidation catalyst 65 and a soot filter 66 are provided in the first case 61. In the second case 62, an SCR catalyst 68 for reducing urea selective catalyst and an oxidation catalyst 69 are provided.

  The first case 61 has an inlet side case 63 and an outlet side case 64. A diesel oxidation catalyst 65 such as platinum that generates nitrogen dioxide (NO 2) is disposed inside the inlet side case 63. A honeycomb-structured soot filter 66 that continuously oxidizes and removes the collected particulate matter (PM) at a relatively low temperature is disposed inside the inlet side case 63 and the outlet side case 64. In addition to removing particulate matter (PM) in the exhaust gas of the diesel engine 14 by the diesel oxidation catalyst 65 and the soot filter 66 arranged in series in the movement direction of the exhaust gas in the inlet side case 63 and the outlet side case 64, Reduce carbon monoxide (CO) and hydrocarbons (HC) in exhaust gas. On the other hand, an SCR catalyst 68 and an oxidation catalyst 69 are arranged in series in the movement direction of the exhaust gas in the second case 62. The SCR catalyst 68 and the oxidation catalyst 69 in the second case 62 are configured to reduce nitrogen oxides (NOx).

  Further, as shown in FIGS. 3 to 6, the first case 61 and the second case 62 are formed in a long cylindrical shape extending long in the left-right direction of the machine body. A DPF inlet pipe 34 for taking in the exhaust gas and a DPF outlet pipe 35 for discharging the exhaust gas are provided on both sides of the first case 61 (one end side and the other end side in the exhaust gas movement direction). Similarly, an SCR inlet pipe 36 that takes in exhaust gas and an SCR outlet pipe 37 that discharges exhaust gas are provided on both sides of the second case 29 (one end side and the other end side in the exhaust gas movement direction).

  Further, as shown in FIGS. 3 to 5, a supercharger 38 that forcibly sends air to the diesel engine 1 is disposed at an exhaust gas outlet (exhaust manifold) of the diesel engine 14. The DPF inlet pipe 34 is connected to the exhaust gas outlet side of the supercharger 38 via the exhaust connecting pipe 40 to introduce the exhaust gas of the diesel engine 1 into the first case 61, while the SCR inlet pipe is connected to the DPF outlet pipe 35. A urea mixing pipe 39 to which 36 is connected is provided, and exhaust gas is introduced from the first case 28 into the second case 29 through the urea mixing pipe 39. In addition, the exhaust gas outlet side of the supercharger 38 and the exhaust connection pipe 40 are connected by a bellows-like connection pipe 41 that can be bent and expanded, and the vibration of the engine 14 on the supercharger 38 side is connected to the exhaust connection pipe 40 side. It is constituted so that it is not transmitted to.

  On the other hand, the DPF outlet pipe 35 and the urea water injection part 39a of the urea mixing pipe 39 are detachably bolted by a pipe flange 42. The inlet side case 63 and the outlet side case 64 are detachably connected by bolt fastening of a plurality of thick plate-like intermediate flange bodies 88, and the outlet side case 64 can be separated to perform disassembly maintenance of the soot filter 66. It is composed. Further, a tail pipe 87 is connected to the SCR outlet pipe 37 to open an exhaust gas outlet of the tail pipe 87 toward the upper side of the machine body, and the exhaust gas of the diesel engine 14 (each cylinder) is supplied to the turbocharger. 38 is introduced into the first case 61, moved from the first case 61 to the urea mixing pipe 39, and urea water in a urea water tank 131 described later is mixed with the exhaust gas, and then the exhaust gas becomes the second case. It is configured to be introduced into 62 and discharged from the tail pipe 87 to the outside of the machine.

  With the above configuration, the particulate matter (PM) contained in the exhaust gas of the diesel engine 14 is collected by the soot filter 66 in the first case 61 and continuously oxidized and removed by nitrogen dioxide (NO2). Is done. In addition to the removal of particulate matter (PM) in the exhaust gas of the diesel engine 14, the content of carbon monoxide (CO) and hydrocarbon (HC) in the exhaust gas of the diesel engine 14 is reduced. Next, urea water is injected from the urea water injection nozzle body of the urea water injection section 39a into the exhaust gas from the diesel engine 14 inside the urea mixing pipe 39, and ammonia generated by hydrolysis is mixed. The exhaust gas in the two cases 62 is reduced in the content of nitrogen oxides (NOx) by the SCR catalyst 68 and the oxidation catalyst 69 for urea selective catalyst reduction. The exhaust gas of the diesel engine 14 is purified by the first case 61 and the second case 62 and discharged from the tail pipe 87 to the outside of the machine.

  Next, as shown in FIGS. 3 to 5, an engine room frame 91 as a body frame is erected on the traveling machine body 1 behind the grain tank 7, and an engine room 92 is formed by the engine room frame 91. The diesel engine 14 is placed on the upper surface side of the traveling machine body 1, the diesel engine 14 is installed on the lower side in the engine room 92, and the water cooling radiator 93 and the cooling are disposed on the upper side of the diesel engine 14 in the engine room 92. Cooling components such as a fan 94 are installed inside. That is, the diesel engine 14 and cooling components such as the water cooling radiator 93 of the diesel engine 14 are arranged in a vertically long engine room 92 in an upper and lower two-stage structure. The cooling fan 94 draws outside air from the outside right side of the combiner body toward the cooling parts such as the radiator 43, while the cooling fan 94 discharges warm air from the cooling parts such as the radiator 43 toward the threshing device 5 side. It is configured to make it.

  Further, the right side, the back side, and the top side of the diesel engine 14 and the cooling parts are surrounded by the engine room frame 91, and the right side of the engine room frame 91 is surrounded by the cooling fan 15 of the diesel engine 14 and the cooling fan 94 such as the radiator 43. While the outside air for cooling is taken into the engine room 92 from the outside, the warm air after cooling the diesel engine 14 and the radiator 43 is the right side of the threshing device 5 as a working part adjacent to the engine room frame 91 (engine room 92). It is configured to be discharged toward

  As shown in FIGS. 3 and 4, a urea water tank 131 for supplying a urea aqueous solution into the exhaust gas inside the urea mixing pipe 39 is provided, and an engine room frame 91 on the rear left side of the engine room 92 (near the threshing device 5 on the right side). The tank support 132 is attached to the tank support 132, and the urea water tank 131 is placed on the tank support 132. The urea water injection pump (not shown) that pumps the urea aqueous solution in the urea water tank 131, and the urea water injection A urea water injection valve body (provided in the urea water injection section 39a) is provided with an aqueous solution in the urea water tank 131 to the urea water injection section 39a of the urea mixing pipe 39. The urea aqueous solution is sprayed into the urea mixing tube 39 from (not shown). Ammonia is generated by hydrolysis of the urea water supplied into the urea mixing pipe 39, and is mixed into the exhaust gas from the first case 61 to the second case 62.

  As shown in FIG. 3, the grain discharge conveyor 8 has a transverse feed conveyor 8a in which the throat throwing hole 9 is arranged on the distal end side, and a longitudinal feed conveyor 8b that connects the base end side of the transverse feed conveyor 8a. Using the engine room frame 91, the vertical feed conveyor 8 b is erected outside the rear surface of the engine room 92. Further, a battery 16 for starting the engine 14 is mounted on the upper surface of the traveling machine body 1 outside the rear surface of the engine room 92. A urea water tank 131 is disposed above the battery 16 via a tank support 132 on the side of the lower end side of the vertical feed conveyor 8b. Therefore, the tank support body 132 can be supported with high rigidity by the engine room frame 91, and the support strength of the urea water tank 131 can be easily secured. The urea water tank 131 is heated by the engine cooling air in the engine room 92, and the urea water temperature in the urea water tank 131 can be easily maintained. The urea water tank 131 can be disposed on the upper surface of the rearmost portion of the traveling machine body 1, and urea water supply to the urea water tank 131 or maintenance work can be performed by opening and closing a cover surrounding the engine room 92.

  Next, as shown in FIGS. 1 and 4 to 6, a purification device installation recess 7 a is formed on the rear upper surface of the grain tank 7 adjacent to the threshing device 5, and the purification device installation recess 7 a is formed from the upper front side of the engine room frame 91. The mounting base frame body 95 is extended toward the head. That is, the mounting frame 95 is disposed between the upper surface side of the engine room 92 and the upper surface side of the grain tank 7 adjacent thereto. Further, the first case 28 and the second case 29 as exhaust gas purifying devices are fixed to the case fixing body 96 with the fastening band 97, and the first case 61, the second case 62, and the urea mixing pipe 39 are connected to the case fixing body 96. The exhaust gas purification unit body 99 is fixed and supported in parallel. The first case 61 and the second case 62 connected in parallel by the case fixing body 96 are supported in the front-rear direction, and the urea mixing tube 39 is disposed above the first case 61 and the second case 62. Between the first case 61 and the second case 62 that are long on the left and right, a cylindrical urea mixing tube 39 that is long on the left and right is extended in parallel to the upper side of each case 61 and 62. doing.

  With the above configuration, the mounting base frame 95 is disposed at a high position on the upper surface side of the engine room 92, and the installation space for the exhaust gas purification devices (the first case 61 and the second case 62) can be easily secured. The 92 volume or the first case 61 (second case 62) volume is not limited. The exhaust gas purification unit body 99 is provided with a differential pressure sensor 111 so that the differential pressure sensor 111 detects the clogging state of the soot filter 66.

  Further, the upper surface height of the exhaust gas purifying apparatus including the first case 61, the second case 62, and the urea mixing pipe 39 is formed lower than the upper surface height of the grain tank 7 and is lower than the movement trajectory of the grain discharge conveyor 8. The exhaust gas purification unit body 99 including the first case 61 and the second case 62 is disposed at the position via the mounting frame 95, and the exhaust gas supplied to the first case 61 and the second case 62 Within the range where the temperature does not decrease (the self-regeneration capability does not decrease), the installation portions of the first case 61 and the second case 62 can be formed at positions separated from the diesel engine 14.

  In addition, the upper side of the mounting base frame 95 can be largely opened, and the first case 61 or the second case 62 that is a heavy part can be suspended and assembled to a cargo handling device such as a chain block or a hoist. Operations such as attachment or detachment of the exhaust gas purification unit body 99 (such as the first case 61 or the second case 62) configured as a part can be easily performed. Further, when the diesel engine 14 is stopped, the temperature of the first case 61 and the second case 62 can be quickly lowered. That is, since the side or upper side of the exhaust gas purification unit body 99 such as the first case 61 and the second case 62 can be largely opened toward the outside of the machine, when the diesel engine 14 is stopped, the first case 61 or The surrounding air can be prevented from becoming hot due to the heat radiation action of the second case 62 and the like, and adverse effects such as damage to low heat resistant components (harness etc.) can be reduced.

  Further, as shown in FIGS. 3, 4, and 6, an air cleaner 123 that supplies outside air to the diesel engine 14 and a pre-cleaner 124 that takes outside air into the air cleaner 123 are provided. A pre-cleaner 124 is disposed on the upper surface of the engine room 92 on the rear side of the exhaust gas purification unit body 99, and an air cleaner 123 is disposed on the upper left side of the engine room 92. The air cleaner 123 is connected. Combustion air is taken into the intake manifold of the diesel engine 14 from the precleaner 124 via the air cleaner 123.

  An exhaust gas purification device (first case 61 or second case 62) and the precleaner 124 can be compactly supported in the upper surface side space of the engine room 92, and an exhaust gas purification unit body 99 such as the first case 61 or the second case 62 is supported. Can be easily maintained at a predetermined temperature, and the air cleaner 123 can be prevented from becoming inappropriately hot due to exhaust air from the cooling fan 94.

  As shown in FIGS. 1 to 6, the first case 61 and the second case 62 are configured as a unit, and the first case 61 and the second case 62 are arranged in the left-right direction on the upper surfaces of the engine room 92 and the grain tank 7. It is arranged toward. Therefore, the first case 61 and the second case 62 are fixed to the base frame (case fixing body 96) to form a single component unit, and the cases 61 and 62 are simplified in the assembly process near the final stage in the assembly process. In the case where the urea mixing tube 39 that forms ammonia by hydrolysis of urea water is provided, the connecting length between the first case 61 and the second case 62 is not formed long, and urea is formed. The length of the urea mixing tube 39 can be formed to a length necessary for forming ammonia by hydrolysis of water, and the front and rear widths and the left and right widths of the cases 61 and 62 can be made compact.

  As shown in FIG. 2, a grain tank 7 disposed adjacent to the engine room 92 and a grain discharge conveyor 8 for discharging grains in the grain tank 7 are provided, and the grain discharge conveyor is provided at the storage position and the grain discharge position. 8 is configured to be horizontally swivelable, and on the upper surface side of the engine room 92 outside the horizontal swirl movement range of the grain discharge conveyor 8, the parallel first case 61 and second case are arranged. 62 is arranged. That is, the grain discharge conveyor 8 is swung horizontally between the storage position indicated by the solid line on the upper surface of the threshing device 5 and the grain discharge position (maximum turning angle position) indicated by the virtual line outside the grain tank 7 machine. The grain discharging conveyor 8 is used to execute a grain discharging operation for discharging the grains in the grain tank 7 and excludes a storage position indicated by a solid line and a grain discharging position (maximum turning angle position) indicated by a virtual line. The first case 61 and the second case 62 are installed outside the horizontal turning movement range. Therefore, the grain discharge conveyor 8 is horizontally swung between the storage position indicated by the solid line and the grain discharge position indicated by the phantom line without causing the grain discharge conveyor 8 to interfere with the first case 61 or the second case 62. The grain discharge workability in the grain tank 7 can be improved.

  7-11 is explanatory drawing of the exhaust-gas purification apparatus (1st case 61 or 2nd case 62) attachment part which shows 2nd Embodiment. In the first embodiment shown in FIG. 3 and the like, the long cylindrical first case 61, the second case 62, and the urea mixing pipe 39 are supported in the left-right direction, but the first case shown in FIGS. In the second embodiment, the first case 61 and the second case 62 connected in parallel by the case fixing body 96 are supported on the left and right sides, and the urea mixing tube is disposed above the first case 61 and the second case 62. 39 is disposed between the first case 61 and the second case 62 that are long in the front and back, and on the upper side of the cases 61 and 62, the cylindrical urea mixing tube 39 that is long in the front and rear. Are extended in parallel.

  As shown in FIGS. 7 to 11, an exhaust gas outlet of the tail pipe 87 is opened toward the rear side of the upper surface of the engine room 92, and an air supply pipe 125 extends from the upper surface of the engine room 92 toward the upper surface of the threshing device 5. The precleaner 124 is supported at the inlet end portion of the air supply pipe 125 extending in the upper surface direction of the threshing device 5. That is, the exhaust gas purification unit body 99 is disposed on the upper surface side of the engine room 92 with the grain discharge conveyor 8 supported at the storage position interposed therebetween, and the precleaner 124 is disposed on the upper surface side of the threshing device 5. In addition, by utilizing the upper space such as the engine room 92, the exhaust gas purification unit body 99 and the precleaner 124 can be compactly installed around the grain discharge conveyor 8.

  FIGS. 12-14 is explanatory drawing of the exhaust-gas purification apparatus (1st case 61 or 2nd case 62) attachment part which shows 3rd Embodiment. In the first embodiment shown in FIG. 6 and the like, the first case 61, the second case 62, the urea mixing pipe 39, and the precleaner 124 are supported on the upper surface side of the engine room 92. Moreover, in 2nd Embodiment shown in FIG. 8 etc., the 1st case 61, the 2nd case 62, and the urea mixing pipe | tube 39 are supported on the engine room 92 upper surface side, and the precleaner 124 is supported on the threshing apparatus 5 upper surface side. Structure. On the other hand, in 3rd Embodiment shown in FIGS. 12-14, it forms between the threshing apparatus 5 upper surface, the engine room 92 left side surface, and the grain discharge conveyor 8 lower surface of a storage position (harvesting work attitude | position). The precleaner 124 is disposed in the space where the exhaust gas purification unit body 99 (the first case 61 and the second case is disposed on the upper surface of the engine room 92 near the base of the grain discharge conveyor 8 at the storage position). 62) is attached.

  That is, in the third embodiment, most of the exhaust gas purification unit body 99 is arranged on the upper surface side of the engine room 92, and the exhaust gas purification unit body 99 protruding from the upper surface side of the engine room 92 to the grain tank 7 side is projected. Since the dimensions can be reduced as much as possible, it is not necessary to form the purification device installation recess 7a on the rear upper surface side of the grain tank 7 as in the first embodiment or the second embodiment. Therefore, compared with 1st Embodiment or 2nd Embodiment, in 3rd Embodiment, the grain storage volume of the grain tank 7 can be formed largely. Moreover, since the upper surface height of the precleaner 124 is formed lower than the lower surface height of the grain discharge conveyor 8 at the storage position, the grain discharge conveyor 8 is moved to either the storage position or the grain discharge position on the outer side of the machine. However, the grain discharge conveyor 8 does not collide with the pre-cleaner 124, and the grain discharge conveyor 8 can be easily swung inside and outside the machine body in the grain discharge operation of the grain tank 7.

  As shown in FIGS. 1 to 14, the reaping device 3, the threshing device 5, the diesel engine 14 that drives the reaping device 3 or the threshing device 5, and the first that removes particulate matter in the exhaust gas of the diesel engine 14. A combine including a case 61 and a second case 62 for removing nitrogen oxides in the exhaust gas of the diesel engine 14 includes an engine room 92 in which the diesel engine 14 is installed. Further, the first case 61 and the second case 62 connected in parallel are configured to be supported horizontally. Therefore, the first case 61 and the second case 62 can be fixed to the engine room 92 or the like with a simple case support structure, and the first case 61 and the second case 62 can be secured using the machine frame such as the engine room 92. Case support strength can be easily secured, interference between the attached parts of the diesel engine 14 and the first case 61 or the second case 62 can be reduced, and assembly workability and maintenance workability of the first case 61 or the second case 62 can be reduced. Etc. can be improved.

  As shown in FIGS. 1 to 11, the grain tank 7 is disposed adjacent to the engine room 92, and the first case 61 and the second case extend over the upper surfaces of the engine room 92 and the grain tank 7. 62 is arranged. Therefore, a sufficient installation space for the first case 61 and the second case 62 can be secured, and the cases 61 and 62 can be easily attached and detached in maintenance work or repair work, and the first case 61 and the second case 62 are also provided. Can be kept constant by a simple assembling operation, and the exhaust gas piping structure such as the urea mixing pipe 39 between the cases 61 and 62 can be simplified.

  As shown in FIGS. 7 to 11, the first case 61 and the second case 62 are configured as a unit, and the first case 61 and the second case 62 are arranged in the front-rear direction on the upper surfaces of the engine room 92 and the grain tank 7. It is arranged toward the. Therefore, the first case 61 and the second case 62 are fixed to the base frame (case fixing body 96) to form a single component unit, and the cases 61 and 62 are simplified in the assembly process near the final stage in the assembly process. In the case where the urea mixing tube 39 that forms ammonia by hydrolysis of urea water is provided, the connecting length between the first case 61 and the second case 62 is not formed long, and urea is formed. The length of the urea mixing tube 39 can be formed to a length necessary for forming ammonia by hydrolysis of water, and the front and rear widths and the left and right widths of the cases 61 and 62 can be made compact.

3 Harvesting device 5 Threshing device 7 Grain tank 8 Grain discharge conveyor 14 Diesel engine 61 First case 62 Second case 92 Engine room

Claims (5)

A mowing device, a threshing device, an engine for driving the mowing device or the threshing device, a first case for removing particulate matter in the exhaust gas of the engine, and a nitrogen oxide substance in the exhaust gas of the engine are removed. In the combine including the second case,
A structure including an engine room in which the engine is installed, wherein the first case and the second case connected in parallel are horizontally supported on an upper surface side of the engine room. Combine engine device.   2. A structure in which a grain tank is disposed adjacent to the engine room, wherein the first case and the second case are disposed across the upper surfaces of the engine room and the grain tank. The engine device of the combine described in 1.   3. The first case and the second case are configured as a unit, and the first case and the second case are arranged in the left-right direction on each upper surface side of the engine room and the grain tank. The engine device of the combine described in 1.   3. The first case and the second case are configured as a unit, and the first case and the second case are disposed in the front-rear direction on each upper surface side of the engine room and the grain tank. The engine device of the combine described in 1.   A grain tank disposed adjacent to the engine room, and a grain discharge conveyor for discharging the grains in the grain tank, and configured so that the grain discharge conveyor can be horizontally swung between the storage position and the grain discharge position. In the upper surface side of the engine room, the first case and the second case in parallel are arranged on the upper surface side outside the horizontal swivel movement range of the grain discharge conveyor. The combine engine device according to claim 1.

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