JP5971859B2 - Combine - Google Patents

Description

  The present invention relates to a combine such as a harvester that harvests cereals planted in a field and collects grains, or a combine that harvests cereals for feed and collects it as feed, and more specifically, the engine discharges. The present invention relates to a combine equipped with an exhaust gas purification device for purifying exhaust gas.

  Conventionally, a combine is provided with a traveling machine body on which an engine is mounted, and a pair of left and right traveling crawlers are mounted on the traveling machine body, and the pair of left and right traveling crawlers are driven and controlled to move in a farm field or the like. In addition, the combine cuts the stock of uncut cereal planted in the field with a cutting blade device, conveys the cereal to a threshing device with a cereal conveying device as a cereal conveying means, and The cereal is threshed and the grains are collected. Conventionally, an exhaust gas purification device that purifies exhaust gas is disposed in a lateral orientation on the upper surface side of the engine, and is configured to discharge exhaust gas from the engine toward the exhaust gas purification device (for example, Patent Document 1). reference).

JP 2010-209813 A

  In the prior art, since the engine and the exhaust gas purification device are installed close to each other in the engine room, it is necessary to secure an installation space for the exhaust gas purification device around the engine mounting portion. There is a problem that the volume of the gas purification device is limited. Further, in the structure in which the exhaust gas purifying device is supported by the engine, the mounting position of the exhaust gas purifying device is limited, the mounting structure of the exhaust gas purifying device cannot be simplified, and the support rigidity of the exhaust gas purifying device cannot be easily improved. There are problems such as. In addition, in a structure in which the exhaust gas purification device is installed in a traveling machine body located away from the engine, such as a lorry, the installation space of the exhaust gas purification device can be easily secured, but the exhaust gas temperature in the exhaust gas purification device However, there is a problem that the self-regeneration capability of the exhaust gas purifying device is likely to be reduced because the temperature is lowered below a predetermined temperature.

  Therefore, the present invention seeks to provide a combine that has been improved by examining these current conditions.

In order to achieve the above object, a combine of an invention according to claim 1 is provided with an exhaust gas purifying device for processing exhaust gas of an engine, and the engine is connected to the exhaust gas purifying device in an exhaust path of the engine. A tail pipe having a vertical position between the engine room and the grain tank and having one end communicated with the exhaust gas purification apparatus from the space between the engine room and the grain tank toward the threshing apparatus. The other end side is extended, and the upper part of the exhaust gas purifying device is arranged opposite to the air conditioning fan installed on the back of the cabin above the engine room.

  According to a second aspect of the present invention, in the combine according to the first aspect, an upper surface flange member protrudes laterally from the upper surface side of the exhaust gas purification device, and a pipe inlet side support body is set up on the upper surface flange member. And configured to support the exhaust gas inlet side of the tail pipe on the pipe inlet side support.

  According to a third aspect of the present invention, in the combine according to the first aspect, the combine is provided with an upper surface cover body provided at a joint portion between the upper surface of the exhaust gas purification device and the tail pipe, and the exhaust gas inlet side of the tail pipe An upper surface cover body is supported, and the upper surface of the exhaust gas purification device is covered with the upper surface cover body.

  According to a fourth aspect of the present invention, in the combine according to the second aspect, the upper surface of the threshing device and the lower surface of the grain discharge conveyor are provided via a pipe outlet side support that is erected upward from the upper surface of the threshing device. The exhaust gas outlet side of the tail pipe is extended between the two.

According to the first aspect of the present invention, in a combine that includes an exhaust gas purification device that processes exhaust gas of an engine and connects the exhaust gas purification device in an exhaust path of the engine, between the engine room and the grain tank. The exhaust gas purification device is provided in a vertical position, and the other end side of a tail pipe that is communicated at one end side to the exhaust gas purification device is extended from between the engine room and the grain tank toward the threshing device. Since the upper part of the exhaust gas purification device is disposed opposite to the air conditioning fan installed on the back of the cabin above the engine room, the exhaust gas purification is performed in comparison with the conventional horizontal orientation. The plane installation space of the device can be made narrow, and the exhaust gas purification device can be arranged compactly outside the engine room. The tail pipe is assembled in a horizontal posture across the upper surface side of the exhaust gas purification device and the upper surface side of the threshing device while being able to support the exhaust gas purification device with high rigidity close to the engine. The tailpipe can be compactly arranged along the side of the grain tank or the top surface of the threshing device.

  According to the second aspect of the present invention, an upper surface flange member protrudes laterally from the upper surface side of the exhaust gas purification device, and a pipe inlet side support body is erected on the upper surface flange member, and the pipe inlet side support body The exhaust pipe is configured to support the exhaust gas inlet side of the tail pipe, so that the support structure of the tail pipe can be easily configured by the upper surface flange member and the pipe inlet side support. The exhaust gas inlet side of the tail pipe can be connected with high accuracy to the exhaust gas outlet pipe of the exhaust gas purification device, and the exhaust gas outlet pipe on the upper surface of the exhaust gas purification device and the exhaust gas inlet side of the tail pipe; A gap for introducing outside air can be easily formed between them.

  According to the invention of claim 3, comprising an upper surface cover body provided at a joint between the upper surface of the exhaust gas purification device and the tail pipe, the upper surface cover body is supported on the exhaust gas inlet side of the tail pipe, Since the upper surface of the exhaust gas purification device is configured to be covered with the upper surface cover body, the amount of dust accumulated on the exhaust gas inlet side of the tail pipe can be reduced, and for example, the tail pipe and the upper surface cover can be reduced. The body can be integrally detached, and the maintenance workability on the upper surface side of the exhaust gas purification device can be improved. Further, without being limited by the mounting portion of the upper surface cover body, it is possible to easily form a gap for introducing outside air between the exhaust gas outlet on the upper surface of the exhaust gas purification device and the exhaust gas inlet of the tail pipe, A structure for introducing outside air from the exhaust gas inlet side of the tail pipe can be easily formed.

  According to the invention which concerns on Claim 4, it is between the said threshing apparatus upper surface and the grain discharge conveyor lower surface via the pipe exit side support body standing up from the upper surface of the said threshing apparatus. Since the exhaust gas outlet side is extended, the tail pipe can be assembled in a horizontal posture across the upper surface side of the exhaust gas purification device and the upper surface side of the threshing device. The tail pipe can be compactly arranged outside the swivel operation range of the grain discharge conveyor along the side surface of the grain tank or the upper surface of the threshing apparatus.

It is a left view of the combine for 6-cutting which shows 1st Embodiment of this invention. It is the same top view. It is the same right view. It is a back perspective view of an exhaust gas purification device attachment part. It is the same front perspective view. It is the same plane explanatory drawing. FIG. 5 is an enlarged explanatory view of FIG. 4. It is a front perspective view of an engine and an exhaust gas purification device. It is a left view of an exhaust gas purification apparatus. FIG. It is upper surface side explanatory drawing of an exhaust-gas purification apparatus. It is explanatory drawing of the left side attachment part of an exhaust-gas purification apparatus. It is a left view of the combine for 6-cut mowing which shows 2nd Embodiment of this invention. It is the same top view. It is the same right view. FIG. 16 is an enlarged explanatory view of FIG. 15. It is the perspective view which looked at the exhaust-gas purification apparatus attachment part from the right side rear. It is expansion explanatory drawing of FIG. It is the perspective view which looked at the exhaust-gas purification apparatus attachment part from the left side rear.

  Below, 1st Embodiment which actualized this invention is described based on FIGS. With reference to FIGS. 1-3, the whole structure of the combine of 1st Embodiment by which the diesel engine was mounted 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 FIGS. 1 to 3, a traveling machine body 1 supported by a pair of left and right traveling crawlers 2 as a traveling unit is provided. At the front part of the traveling machine body 1, a 6-row mowing device 3 that takes in while harvesting cereals is mounted by a single-acting lifting hydraulic cylinder 4 so as to be movable up and down around the mowing pivot fulcrum shaft 4 a. The A threshing device 5 having a feed chain 6 and a grain tank 7 for storing the 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 of the traveling machine body 1, and the grain tank 7 is disposed on the right side of the traveling machine body 1.

  Further, a grain discharge conveyor 8 is provided at the rear part of the traveling machine body 1 and can be swung via a vertical take-out conveyor 8 a, and the grains inside the grain tank 7 are transferred from the culling spout 9 of the grain discharge conveyor 8 to a truck bed or It is configured to be discharged into a container or the like. 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. A cabin rotation fulcrum shaft 10a is provided in the lower front portion of the driving cabin 10, and the lower portion of the front surface of the operation cabin 10 is pivotally supported on the traveling machine body 1 via the cabin rotation fulcrum shaft 10a. Thus, the operation cabin 10 is movably installed, and the operation cabin 10 is configured to rotate forward about the cabin rotation fulcrum shaft 10a.

  In the driving cabin 10, the steering handle 11, the driving seat 12, the main transmission lever 15, the auxiliary transmission lever 16, the threshing clutch lever 17 for turning on and off the threshing clutch, and the cutting clutch lever for turning on and off the cutting clutch 18 are arranged. A diesel engine 14 as a power source is disposed in the traveling machine body 1 below the driver seat 12. The operation cabin 10 is provided with a step on which an operator gets on, a handle column provided with a steering handle 11, a lever column provided with the levers 15, 16, 17, 18 and the like.

  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 engine 14 to the traveling crawler 2, a tension roller 23 that maintains the tension of the traveling crawler 2, and a plurality of track rollers that hold the ground side of the traveling crawler 2 in a grounded state. 24 and an intermediate roller 25 that holds 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 cutting frame 51 connected to the cutting rotation fulcrum shaft 4 a of the cutting device 3 has a clipper type cutting blade device 52 that cuts the stock of uncut grain culm planted in the field. Is provided. In front of the reaping frame 51, a stalk raising apparatus 53 for 6 stalks that raises an uncut cereal cultivated in the field is arranged. Between the culm pulling device 53 and the front end (feed start side) of the feed chain 6, a culm transporting device 54 that transports the chopped culm harvested by the cutting blade device 52 is arranged. In addition, in front of the lower part of the cereal habit raising device 53, a weeding body 55 corresponding to 6 strips for weeding the uncut cereal cedar is provided. While moving in the field, the reaping device 3 is configured to continuously shave the uncut cereal grains planted in the field.

  Next, with reference to FIG.1 and FIG.2, the structure of the threshing apparatus 5 is demonstrated. As shown in FIG. 1 and FIG. 2, the threshing device 5 includes a handling cylinder 56 for threshing threshing, a rocking sorter 57 that sorts the cereals falling below the handling cylinder 56, and a tang fan 58. A processing cylinder 59 for reprocessing the threshing discharge taken out from the rear part of the cylinder 56 and a dust exhaust fan 60 for discharging dust at the rear part of the rocking sorter 57 are provided. In addition, the cereals conveyed by the culm conveying device 54 from the reaping device 3 are inherited by the feed chain 6, carried into the threshing device 5, and threshed by the handling cylinder 56.

  As shown in FIG. 1, on the lower side of the rocking sorter 57, there are a first conveyor 61 for taking out the grain (the first thing) sorted by the rocking sorter 57 and two branches such as a grain with branches and branches. A second conveyor 62 for taking out the articles is provided. The rocking sorter 57 is configured such that the cereal grains leaked from the receiving net 67 stretched below the handling cylinder 56 are rocked and sorted (specific gravity sorting) by the feed pan 68 and the chaff sheave 69. . Grains that fall from the swing sorter 57 are removed by the sorting air from the tang fan 58 and fall to the conveyor 61 first. The grain taken out first from the conveyor 61 is carried into the grain tank 7 via the cereal conveyor 63 and collected in the grain tank 7.

  Further, as shown in FIG. 1, the swing sorter 57 is configured to drop a second thing such as a grain with a branch stem from the chaff sheave 69 onto the second conveyor 62 by the swing sorting. A sorting fan 71 for wind-selecting the second object that falls below the chaff sheave 69 is provided. As for the second thing that has fallen from the chaff sheave 69, the dust and swarf in the grain are removed by the sorting air from the sorting fan 71 and dropped onto the second conveyor 62. The terminal end of the second conveyor 62 is connected to the upper surface side of the feed pan 68 via the reduction conveyor 66, and is configured to return the second product to the upper surface side of the swing sorting plate 67 and re-sort. Yes.

  On the other hand, as shown in FIGS. 1 and 2, an exhaust chain 64 and an exhaust cutter 65 are arranged on the rear end side (feed end side) of the feed chain 6. The waste passed through the feed chain 6 from the rear end side of the feed chain 6 (the straw from which the grain has been threshed) is discharged to the rear of the traveling machine body 1 in a long state, or the rear part of the threshing device 5 After being cut to a suitable length by a waste cutter 65 provided at the top, the waste cutter 65 is discharged to the lower rear of the traveling machine body 1.

  Next, an exhaust gas purification case 75 as a continuously regenerative exhaust gas purification device 74 (diesel particulate filter) and its mounting structure will be described with reference to FIGS. As shown in FIGS. 4 to 8, the exhaust gas purification device 74 includes a continuously regenerative exhaust gas purification case 75 for introducing the exhaust gas of the diesel engine 14. The exhaust gas purification case 75 has an inlet side case 76 and an outlet side case 77. Inside the inlet side case 76 and the outlet side case 77, a diesel oxidation catalyst 79 (gas purifier) such as platinum that generates nitrogen dioxide (NO2) and the collected particulate matter (PM) are continuously provided at a relatively low temperature. The soot filter 80 (gas purifier) having a honeycomb structure to be oxidized and removed is arranged in series in the exhaust gas movement direction (from the lower side to the upper side in FIG. 7). In addition to the removal of particulate matter (PM) in the exhaust gas of the diesel engine 1 by the diesel oxidation catalyst 79 and the soot filter 80 in the inlet side case 76 and the outlet side case 77, carbon monoxide (CO) in the exhaust gas. And hydrocarbons (HC) are reduced.

  4 to 8, a purification inlet pipe 81 as an exhaust gas inlet pipe is welded and fixed to the inlet case 76, and one end side of a purification outlet pipe 82 as an exhaust gas outlet pipe is fixed to the outlet case 77. Fasten the bolts. One end of a tail pipe 83 as an exhaust pipe is fitted into the other end side of the purification outlet pipe 82 in a loose fit, and outside air is sucked from a loose fitting gap between the other end of the purification outlet pipe 82 and one end of the tail pipe 83. As shown, a tail pipe 83 is connected to the purification outlet pipe 82. The exhaust gas of the diesel engine 14 is introduced into the exhaust gas purification case 75 from the purification inlet pipe 81, and the exhaust gas in the exhaust gas purification case 75 is discharged from the purification outlet pipe 82 to the tail pipe 83. After gas temperature falls, it is comprised so that it may discharge | release outside the apparatus. The inlet side case 76 and the outlet side case 77 are detachably fastened by a plurality of sets of thick plate intermediate flange bodies 84 and a plurality of bolts 85.

  With the above configuration, the nitrogen dioxide (NO 2) generated by the oxidation action of the diesel oxidation catalyst 79 is supplied into the soot filter 80 from one end face (intake end face). Particulate matter (PM) contained in the exhaust gas of the diesel engine 14 is collected by the soot filter 80 and continuously oxidized and removed by nitrogen dioxide (NO2). 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, as shown in FIGS. 4 to 11, an engine room frame 91 is erected on the traveling machine body 1, and the rear surface side of the diesel engine 14 placed on the upper surface side of the traveling machine body 1 is surrounded by the engine room frame 91. The engine room frame 91 includes a left square pipe-shaped column body 92, a right square pipe-shaped column body 93, and a square pipe-shaped horizontal frame 94 that is integrally welded to both left and right column bodies 92, 93. Have. Further, a rubber pressure contact leg 95 is provided at the rear rear portion of the driving cabin 10, and the pressure contact legs 95 at the bottom of the driving cabin 10 are brought into contact with the upper surfaces of the left and right cradles 96 of the horizontal frame 94 from the upper side. The rear part of the driving cabin 10 is supported on each cradle 96 so as to be able to contact and separate in the vertical direction. The diesel engine 14 is installed in the engine room 97 formed by the bottom surface side of the operating cabin 10 and the engine room frame 91.

  Further, a pair of left and right purification case supports 111 are integrally fixed to the horizontal frame 94 by welding. A front support bracket 114 is integrally welded and fixed to the outer surface of the inlet side case 76 in the exhaust gas purification case 75. A front support bracket 114 is disposed at the middle portion of the exhaust gas purification case 75 in the vertical direction (above the purification inlet pipe 81). The front part of the front support bracket 114 is fitted between the pair of left and right purification case supports 111 from the rear side, and screwed to the left and right sides of the pair of left and right purification case supports 111 and the front support bracket 114 from the left and right directions. The front support bracket 114 is detachably fastened to the purification case support 111 by the upper bolt 116a and the lower bolt 116b.

  As shown in FIGS. 7 and 9, the upper bolt 116 a is removably engaged with the engagement notch 111 a of the purification case support 111, and the lower bolt 116 b is attached to the long hole 111 b for position adjustment of the purification case support 111. To penetrate. That is, when assembling the exhaust gas purification device 74, the upper bolt 116a is temporarily fastened and fastened to the front support bracket 114, the exhaust gas purification device 74 is brought close to the attachment position of the purification case support 111, and the purification case support 111 is attached. The upper bolt 116a is engaged with the engaging notch 111a, and the exhaust gas purification case 75 is temporarily supported by the purification case support 111. Thereafter, the lower bolt 116b is passed through the position adjusting long hole 111b of the purification case support 111, the lower bolt 116b is fastened to the front support bracket 114, and the upper bolt 116a is also fastened to the front support bracket 114. 116b, the front support bracket 114 is detachably fixed to the purification case support 111, and the exhaust gas purification device 74 is mounted on the back side of the engine room 97 via the horizontal frame 94. As shown in FIG. 10, a top plate body 114a and a bottom plate body 114b are welded and fixed to the upper end side and the lower end side of the U-shaped front support bracket 114 in plan view, so that the front support bracket 114 has a rectangular box-like high-rigidity structure. Is formed.

  That is, an engine room 97 is formed on the lower side of the cabin 10, the cabin 10 is movably installed toward the front upper side (outer side of the aircraft), the cradle 96 that supports the cabin 10, and the exhaust The purification case support 111 that supports the gas purification case 75 is disposed in the same part (the horizontal frame 94) of the engine room frame 91, and the cabin 10 can be connected to and separated from the exhaust gas purification case 75. .

  Further, as shown in FIGS. 4 to 8 and 12, a side support bracket 141 is integrally welded to the left outer peripheral surface of the inlet side case 76 in the exhaust gas purification case 75. The front support bracket 114 and the side support bracket 141 are arranged radially (in the cross direction) on the same circumference of the outer surface of the entrance side case 76. A bolt 143 is fastened to the side support bracket 141 so that the position of one end of the assembly adjustment plate 142 can be adjusted, and the other end of the assembly adjustment plate 142 is fastened to the right side surface of the machine frame 144 of the threshing device 5. The side support bracket 141 and the machine frame 144 are connected and fixed so that the position can be adjusted via the assembly adjustment plate 142. The side surface of the purification case support 111 and the right side of the threshing device 5 are detachably connected via a side surface support bracket 141. In other words, the front surface of the inlet side case 76 is fastened and fixed to the engine room 97 side (horizontal frame 94), while the left side surface of the inlet side case 76 is fastened and fixed to the threshing device 5 side (machine casing frame 144).

  That is, as shown in FIGS. 4 to 8, the intermediate portion of the exhaust gas purification case 75 is fixed to the engine room frame 91 through the inlet side case 76 in the vertical position. In addition, a purification inlet pipe 81 is provided in a forward-facing posture on the front side surface of the exhaust gas purification case 75 in the exhaust gas supply side at the lower end side of the exhaust gas purification case 75, and the purification inlet pipe is directed toward the upper surface of the engine 14 (front of the fuselage). 81 is extended. An exhaust manifold 117 and a supercharger 118 are arranged at the upper part on the front side of the engine 14 mounted on the traveling machine body 1 with the output shaft 112 directed in the left-right direction. One end side of the exhaust connection pipe 119 is connected to the purification inlet pipe 81 via a bendable bellows-like exhaust introduction pipe 98, while the other end side of the exhaust connection pipe 119 is connected to the exhaust outlet pipe 99 of the supercharger 118. To do. An exhaust gas purification case 75 is connected to the exhaust manifold 117 via a supercharger 118 and an exhaust connection pipe 119.

  As shown in FIG. 4, on the right side of the threshing device 5, an exhaust gas having a cylindrical shape (vertical posture) that is long in the vertical direction is formed in a space formed between the front surface of the grain tank 7 and the rear surface of the cabin 10. A purification case 75 is disposed, and the exhaust gas of the engine 14 is introduced into the exhaust gas purification case 75 via the exhaust manifold 117, the supercharger 118, and the exhaust connection pipe 119. Further, exhaust gas is discharged from the tail pipe 83 toward the rear side on the upper surface side between the threshing device 5 and the grain tank 7.

  On the other hand, as shown in FIGS. 4 to 7, 10, and 11, a pipe inlet-side support 151 and a pipe outlet-side support 152 that are fixed to the exhaust inlet side and the exhaust outlet side of the tail pipe 83 are provided. The left end of the thick plate-like upper end flange body 86 on the upper surface of the exhaust gas purification case 75 is projected in the direction of the threshing device 5, and one end side of the exhaust support base 153 is fastened to the left end of the upper end flange body 86. The other end side of the exhaust support base 153 protrudes from the left end of the body 86 toward the threshing device 5. The lower end side of the inlet side bracket 154 is fastened to the other end side of the exhaust support base 153, the inlet side bracket 154 is erected on the exhaust support base 153, and the lower end side of the pipe inlet side support body 151 is positioned on the upper end side of the inlet side bracket 154. Conclude.

  Further, an outlet side bracket 155 is erected on the right side of the upper surface of the threshing device 5, and the lower end side of the pipe outlet side support body 152 is fastened to the upper end side of the outlet side bracket 155. Over the upper surface of the exhaust gas purification case 75 and the upper surface of the threshing device 5 via the pipe inlet side support 151 and the pipe outlet side support 152 that are erected on each upper surface side of the threshing device 5 and the exhaust gas purification case 75, The tail pipe 83 is extended. A tail pipe 83 is supported on each upper surface side of the threshing device 5 and the exhaust gas purification case 75. The inner diameter of the tail pipe 83 is formed to be larger than the outer diameter of the purification outlet pipe 82, and a gap is formed at the connecting portion between the purification outlet pipe 82 on the small diameter side and the tail pipe 83 on the large diameter side. The exhaust gas moving from the purification outlet pipe 82 into the tail pipe 83 is mixed with the outside air sucked into the tail pipe 83 through the gap so that the temperature of the exhaust gas discharged from the tail pipe 83 is lowered. It is configured.

  As shown in FIGS. 9 to 11, an umbrella-shaped upper surface cover body 156 that covers the upper surface side of the exhaust gas purification case 75 is provided. Cover support brackets 157 are radially fixed to the outer peripheral surface of the tail pipe 83 on the exhaust gas inlet side (connecting portion with the purification outlet pipe 82). A top cover body 156 is detachably fastened to the cover support bracket 157 with a bolt 158. The upper surface cover body 156 is configured to prevent dust and soot from accumulating on the upper surface of the exhaust gas purification case 75. In addition, the outlet side cover body 78 is detachably fastened and fixed to the outlet side case 77 of the exhaust gas purification case 75 via a plurality of thick plate upper end flange bodies 86. An outlet pipe flange body 87 is fixed by welding to the lower end side of the purification outlet pipe 82, and the purification outlet pipe 82 is supported by the outlet side case 77 via an outlet side lid body 78.

  On the other hand, as shown in FIGS. 6 and 7, a pair of hanging engagement holes 134 are provided on the upper end side of the outer surface of the exhaust gas purification case 75 (exhaust gas purification device 74). The pair of hanging engagement holes 134 are formed integrally with the front end and the rear end of the upper end flange body 86 by projecting the front end edge and the rear end edge of the thick plate upper end flange body 86 in the radial direction. ing. Accordingly, in the assembly factory of the combine, for example, a hook of a cargo handling suspension device such as a chain block or a hoist is locked to the suspension engagement hole 134, and the suspension engagement hole 134 (upper end) The exhaust gas purification case 75 is suspended via the flange body 86), and the heavy exhaust gas purification case 75 is transported and moved. Operations such as assembly or removal of the exhaust gas purification case 75 can be easily performed, and the detachability workability of the exhaust gas purification device 74 can be improved.

  Further, the sensor bracket 121 is bolted to a thick plate-like upper end flange body 86 projecting radially in the right direction of the outlet side case 77, and the sensor bracket 121 is disposed on the right side of the upper end side of the exhaust gas purification case 75. A differential pressure sensor 122 integrally provided with an electrical wiring connector is attached to a flat upper surface of a sensor bracket 121 projecting laterally from the exhaust gas purification case 75. The differential pressure sensor 122 is connected to one end side of an upstream sensor pipe 123 and a downstream sensor pipe 124 (not shown). The upstream and downstream sensor piping boss bodies 125 and 126 disposed in the exhaust gas purification case 75 so as to sandwich the soot filter 80 in the exhaust gas purification case 75 are connected to the upstream and downstream sensor pipings. The other end sides of 123 and 124 are connected to each other.

  With the above configuration, the difference between the exhaust gas pressure on the inflow side of the soot filter 80 and the exhaust gas pressure on the outflow side of the soot filter 80 (exhaust gas differential pressure) is detected via the differential pressure sensor 122. Since the residual amount of particulate matter in the exhaust gas collected by the soot filter 80 is proportional to the differential pressure of the exhaust gas, the difference occurs when the amount of particulate matter remaining in the soot filter 80 increases more than a predetermined amount. Based on the detection result of the pressure sensor 122, regeneration control for reducing the amount of particulate matter in the soot filter 80 (for example, control for increasing the exhaust temperature) is executed. When the residual amount of particulate matter further increases beyond the regeneration controllable range, the maintenance work for removing the particulate matter artificially by removing and disassembling the exhaust gas purification case 75, cleaning the soot filter 80, and so on. Is done.

  In addition, an electrical wiring connector is integrally provided on the outer case portion of the differential pressure sensor 122 for electrical wiring, and an upstream gas temperature sensor 128 for detecting the exhaust temperature on the exhaust gas intake side of the diesel oxidation catalyst 76, and diesel oxidation. A downstream gas temperature sensor 130 for detecting the exhaust gas temperature on the exhaust gas discharge side of the catalyst 76 is provided. The electrical wiring connector 129 of the upstream gas temperature sensor 128 and the electrical wiring connector 131 of the downstream gas temperature sensor 130 are fixed to the sensor bracket 121.

  Further, an exhaust gas differential pressure sensor 122 and electrical wiring connectors 129 and 131 as exhaust temperature sensor connectors are disposed above the exhaust gas purification case 75 via a sensor bracket 121. The electrical wiring connector of the differential pressure sensor 122, the electrical wiring connector 129 of the upstream gas temperature sensor 128, and the electrical wiring connector 131 of the downstream gas temperature sensor 130 are arranged in a posture in which the connection directions are directed in the same direction. 129 and 131 are supported. Further, an upper portion of the exhaust gas purification case 75 is disposed so as to face the air discharge portion of the air conditioning fan 115 installed on the back surface of the cabin 10. Therefore, the exhaust of the air conditioning fan 115 can cool the differential pressure sensor 122 or the wirings of the connectors 129 and 131. The exhaust heat on the exhaust gas purification case 75 side can prevent them from burning out and improve their durability.

  On the other hand, as shown in FIGS. 1, 7, and 9 to 11, the rear part of the grain tank 7 is supported by the vertical take-out conveyor 8a that supports the discharge auger 8, and the front side of the grain tank 7 is rotated horizontally around the take-out conveyor 8a. The grain tank 7 is movably provided toward the outside of the machine. A plurality of cover support bases 136 are welded and fixed to the rear surface side of the exhaust gas purification case 75 facing the grain tank 7, and the rear cover body 137 is detachably fastened to each cover support base 136. That is, the exhaust gas purification case 75 is disposed between the engine room 97 (engine room frame 91) and the grain tank 7, and the rear cover body 137 is disposed between the grain tank 7 and the exhaust gas purification case 75. When the grain tank 7 is moved toward the outside of the machine and the rear side of the engine room 97 is opened to perform maintenance work or the like, the operator touches the exhaust gas purification case 75 on the rear cover body 137. It is configured to prevent it.

  Next, with reference to FIGS. 13 to 19, a mounting structure of the exhaust gas purification device 74 of the second embodiment will be described. The combine shown in FIGS. 13 to 19 is equipped with a light-shielding sun visor 160 for covering the upper part of the driving operation unit 159 in which the driving seat 12 and the like are arranged instead of the driving cabin 10 of the first embodiment. Yes. A gate-shaped back frame 161 is provided to stand on the rear side of the driver seat 12. The lower end side of the rear frame 161 is fixed to a horizontal frame 94 as the engine room frame 91. A fulcrum bracket 162 is provided on the upper end side of the rear frame 161, and one end side of the left and right swing arms 163 is rotatably connected to the fulcrum bracket 162 via an adjustment support shaft 164. A sun visor 160 is attached to the end side. The adjustment knob 165 is grasped, the adjustment support shaft 164 is loosened, the support angle of the left and right swing arms 163 is changed, and the sun visor 160 is moved up and down or rotated to an arbitrary position.

  That is, the sun visor 160 and the exhaust gas purification device 74 are supported by the horizontal frame 94 on the rear side of the engine room 97 with high rigidity. In addition, a cooling air intake cover 166 is provided on the outer surface of the right side of the engine room 97, and an air cleaner 167 for intake air of the engine 14 is disposed between the inner surface of the cooling air intake cover 166 and the exhaust gas purification device 74, and the rear frame 161. A steel pipe intake pipe 169 is fixed to the pipe via a pipe bracket 168, and the precleaner 170 is supported on the upper end side of the intake pipe 169. The precleaner 170 is connected to the air cleaner 167 via the intake pipe 169, and fresh air is introduced into the intake manifold of the engine 14 via the precleaner 170 and the air cleaner 167. The rear plate 171 is fixed to the rear frame 161, and the portion where the exhaust gas purification device 74 is installed and the driver's seat 12 are partitioned by the rear plate 171 and exhausted from the engine 14 or the exhaust gas purification device 74 side toward the driver's seat 12. The hot air is prevented from moving.

  As shown in FIGS. 1 and 4 to 12, in a combine that includes an exhaust gas purification device 74 that processes exhaust gas of the diesel engine 14 and connects the exhaust gas purification device 74 in the exhaust path of the diesel engine 14, 97 and the threshing device 5 are opposed to each other, and the exhaust gas purification device 74 is provided in a vertical posture, and a front support bracket 114 and a side support bracket 141 as a plurality of support bracket bodies are radially provided on the outer surface of the exhaust gas purification device 74. Projecting. Therefore, the plane installation space of the exhaust gas purifying device 74 can be made narrower than in the conventional horizontal orientation. The exhaust gas purification device 74 can be compactly arranged at a position close to the engine room 97 and higher than the exhaust pipe (exhaust outlet pipe 99) of the diesel engine 14. Further, by connecting an exhaust gas purification device 74 to the engine room 97 and the threshing device via a front support bracket 114 and a side support bracket 141, an exhaust gas purification device against mechanical vibrations in the left-right direction or the front-rear direction. The support rigidity of 74 can be easily improved.

  As shown in FIGS. 4 to 12, a purification inlet pipe 81 as an exhaust gas intake port is arranged on the lower end side of the exhaust gas purification device 74, and a purification outlet pipe as an exhaust gas discharge port on the upper end side of the exhaust gas purification device 74. 82 of the support bracket body (front support bracket 114, side support bracket 141) on the outer surface of the exhaust gas purification device 74, and the engine room 97 side through the front support bracket 114 on the purification inlet pipe 81 side. The exhaust gas purification device 74 is configured to be supported. Therefore, after the diesel engine 14 or the threshing device 5 is assembled at a predetermined position, the exhaust gas purification device 74 is assembled or removed from the horizontal frame 94 of the engine room 97 or the machine housing (machine housing frame 144) of the threshing device 5. Work (such as bolt fastening operation) can be performed easily. For example, one front support bracket 114 protrudes forward, the other side support bracket 141 protrudes laterally, and the exhaust gas purification device 74 is installed in the corner space where the engine room 97 and the threshing device 5 face each other. Can be installed with high rigidity.

  As shown in FIGS. 4 to 12, the structure is provided with the driving cabin 10 for the operator to board, and the front side of the frame 91 of the engine room 97 on the lateral frame 94 on the back side for supporting the driving cabin 10. The exhaust gas purification device 74 is supported via the support bracket 114. Therefore, the exhaust gas purifying device 74 can be provided close to the diesel engine 14 and can be supported with high rigidity. Can be placed.

  As shown in FIGS. 13 to 19, the sun visor 160 is provided above the driver's seat 12 for an operator to board, and the back side for supporting the sun visor 160 in the frame 91 of the engine room 97 is provided. The exhaust gas purification device 74 is supported on the horizontal frame 94 via the front support bracket 114. Therefore, the exhaust gas purifying device 74 can be provided close to the diesel engine 14 and can be supported with high rigidity. Can be placed.

  As shown in FIGS. 1 and 4 to 12, in a combine that includes an exhaust gas purification device 74 that processes exhaust gas of the diesel engine 14 and connects the exhaust gas purification device 74 in the exhaust path of the diesel engine 14, The exhaust gas purification device 74 is provided in a vertical position between the engine 97 and the grain tank 7, and one end side is communicated with the exhaust gas purification device 75 from between the engine room 97 and the grain tank 7 toward the threshing device 5. The other end side of the tail pipe 83 is extended. Therefore, compared with the conventional horizontal orientation, the plane installation space of the exhaust gas purification device 74 can be made narrower, and the exhaust gas purification device 74 can be arranged compactly outside the engine room 97. Although the exhaust gas purification device 74 can be supported with high rigidity in the vicinity of the diesel engine 14, the tail pipe 83 is assembled in a horizontal posture across the upper surface side of the exhaust gas purification device 74 and the upper surface side of the threshing device 5. The tail pipe 83 can be compactly arranged along the side surface of the grain tank 7 or the upper surface of the threshing device 5.

  As shown in FIGS. 4 to 12, an upper end flange body 86 as an upper surface flange member protrudes laterally from the upper surface side of the exhaust gas purification device 74, and a pipe inlet side support body 151 is erected on the upper end flange body 86. The pipe inlet side support 151 is configured to support the exhaust gas inlet side of the tail pipe 83. Therefore, the support structure of the tail pipe 83 can be easily configured by the upper end flange body 86 and the pipe inlet side support body 151, but the exhaust gas outlet pipe (purification outlet pipe 82) of the exhaust gas purification device 74. Thus, the exhaust gas inlet side of the tail pipe 83 can be connected with high precision, and the outside gas introduction side is provided between the exhaust gas outlet pipe (purification outlet pipe 82) on the upper surface of the exhaust gas purification device 74 and the exhaust gas inlet side of the tail pipe 83. A gap can be easily formed.

  As shown in FIGS. 4 to 12 and FIGS. 17 to 19, an upper surface cover body 156 provided at the joint between the upper surface of the exhaust gas purification device 74 and the tail pipe 83 is provided, and the upper surface cover body is provided on the exhaust gas inlet side of the tail pipe 83. 156 is supported, and the upper surface of the exhaust gas purification device 74 is covered with an upper surface cover body 156. Accordingly, the amount of dust accumulated on the exhaust gas inlet side of the tail pipe 83 can be reduced, and for example, the tail pipe 83 and the upper surface cover body 156 can be integrally detached, and the maintenance workability on the upper surface side of the exhaust gas purification device 74 is improved. it can. Further, without being limited by the attachment portion of the top cover body 156, a gap for introducing outside air can be easily formed between the exhaust gas outlet on the top surface of the exhaust gas purification device 74 and the exhaust gas inlet of the tail pipe 83, A structure for introducing outside air from the exhaust gas inlet side of the tail pipe 83 can be easily formed.

  As shown in FIGS. 4 to 12 and FIGS. 17 to 19, the upper surface of the threshing device 5 and the lower surface of the grain discharge conveyor 8 are disposed via a pipe outlet side support 152 erected upward from the upper surface of the threshing device 5. In the middle, the exhaust gas outlet side of the tail pipe 83 is extended. Therefore, the tail pipe 83 can be assembled in a horizontal posture across the upper surface side of the exhaust gas purification device 74 and the upper surface side of the threshing device 5. The tail pipe 83 can be compactly arranged outside the swivel operation range of the grain discharge conveyor 8 along the side surface of the grain tank 7 or the upper surface of the threshing device 5.

  As shown in FIGS. 1 and 4 to 12, in a combine that includes an exhaust gas purification device 74 that processes exhaust gas of the engine 14 and connects the exhaust gas purification device 74 in the exhaust path of the engine 14, The exhaust gas purifying device 74 is disposed in a vertical posture on the side surfaces of the engine room 97 facing each other, and a suspension engagement hole 134 as a pair of suspension support portions is provided on the upper surface side of the exhaust gas purifying device 74, A pair of hanging engagement holes 134 are arranged in a row in a direction in which the exhaust gas purification device 74 is attached to and detached from 97. Therefore, the plane installation space of the exhaust gas purifying device 74 can be made narrower than in the conventional horizontal orientation. Although the exhaust gas purification device 74 can be compactly arranged outside the engine room 97, the exhaust gas purification device 74 can be supported with high rigidity in the vicinity of the engine 14. For example, in an assembly factory, the exhaust gas purifying device 74 is suspended in a vertically long posture (assembled posture) on a chain block or the like via a pair of hanging engagement holes 134 to stabilize the exhaust gas purifying device 74. Can be transported in a posture. In particular, since the pair of hanging engagement holes 134 are arranged in a line in the direction in which the exhaust gas purification device 74 is attached and detached, the exhaust gas purification device 74 is mounted when the exhaust gas purification device 74 is suspended and transported. It is possible to easily prevent the inertia swing other than the place, and to improve the workability of assembling the heavy exhaust gas purification device 74.

  As shown in FIGS. 4 to 12, one hanging engagement hole 134 is provided at the front part of the upper surface of the exhaust gas purification device 74, and the other hanging engagement hole body 134 is provided at the rear part of the upper surface of the exhaust gas purification device 74. The exhaust gas purification device 74 is made to approach the engine room 97 from the rear of the engine room 97, and the exhaust gas purification device 74 is attached to the rear side of the engine room 97. Therefore, when the exhaust gas purifying device 74 is suspended and conveyed in a vertically long posture, the back-and-forth movement of the exhaust gas purifying device 74 can be reduced compared to supporting the left and right side portions of the exhaust gas purifying device 74, and the engine A collision between the rear surface of the room 97 and the exhaust gas purification device 74 can be prevented in advance. The connection operability of the exhaust gas purification device 74 to the mounting location on the rear surface of the engine room 97 can be improved.

  As shown in FIGS. 4 to 12 and 18, an exhaust support base 153 as a tail pipe support is disposed on the upper surface of the exhaust gas purification device 74 facing the threshing device 5, and the threshing device 5 is disposed from the upper surface of the exhaust gas purification device 74. The tail pipe 83 extending toward the exhaust is supported by the exhaust support base 153 and is supported by the upper surface of the exhaust gas purification device 74 facing the air passage of the air conditioning fan 115 (blower fan) provided in the operation cabin 10. A sensor bracket 121 as a unit is disposed, and a differential pressure sensor 122 (exhaust gas sensor) or wiring connectors 129 and 131 are supported via the sensor bracket 121 in the air passage of the air conditioning fan 115. Therefore, while the tail pipe 83 can be connected to the exhaust gas purification device 74 via the exhaust support base 153 with high accuracy, the exhaust support base 153 can be formed at low cost. Moreover, it is possible to prevent the temperature of the differential pressure sensor 122 or the wiring connectors 129 and 131 from excessively rising by blowing air from the air-conditioning fan 115, such as wiring of the differential pressure sensor 122 or the wiring connectors 129 and 131. However, it is possible to prevent deterioration or burnout due to exhaust heat of the exhaust gas purification device 74, and to improve durability thereof.

  As shown in FIGS. 4 to 12, the exhaust gas purification device 74 is attached to the rear side portion of the engine room 97, and is provided at the front and rear portions of the upper end flange body 86 as the upper surface flange member of the exhaust gas purification device 74. A pair of suspension engagement holes 134 (suspending support portions) is provided, while an exhaust support base 153 (tail pipe support portion) for attaching the tail pipe 83 is provided on the left side of the upper end flange body 86, and the upper end flange body 86 is provided. A sensor bracket 121 (sensor support part) for attaching the differential pressure sensor 122 is provided on the right side of the sensor. Therefore, the pair of hanging engagement holes 134, the exhaust support base 153, and the sensor bracket 121 can be arranged in a cross direction. For example, a hook engagement / disengagement operation to / from the pair of suspension engagement holes 134, a tail pipe 83 attachment / detachment operation to the exhaust support base 153, or attachment of the differential pressure sensor 122 or the wiring connectors 129, 131 to the sensor bracket 121, etc. It is possible to secure a sufficient work space for operations and wiring operations, and to improve assembly workability or maintenance workability.

5 Thresher 7 Grain Tank 8 Grain Discharge Conveyor 14 Diesel Engine 74 Exhaust Gas Purifier 83 Tail Pipe 86 Thick Plate Top Flange (Upper Flange Member)
97 Engine room 151 Pipe inlet side support body 152 Pipe outlet side support body 156 Upper surface cover body

Claims (4)

In a combine that includes an exhaust gas purification device that processes exhaust gas of an engine, and that connects the exhaust gas purification device in an exhaust path of the engine,
A tail pipe in which the exhaust gas purification device is provided in a vertical position between the engine room and the grain tank, and one end side is communicated with the exhaust gas purification device from the space between the engine room and the grain tank toward the threshing device. The other end side of the
The combine is characterized in that an upper part of the exhaust gas purifying device is arranged facing an air conditioning fan installed on the back of the cabin above the engine room.   An upper surface flange member protrudes laterally from the upper surface side of the exhaust gas purification device, a pipe inlet side support body is erected on the upper surface flange member, and an exhaust gas inlet side of the tail pipe is disposed on the pipe inlet side support body. The combine according to claim 1, wherein the combine is configured to be supported.   An upper surface cover body provided at a joint between the upper surface of the exhaust gas purification device and the tail pipe is provided, the upper surface cover body is supported on the exhaust gas inlet side of the tail pipe, and the upper surface of the exhaust gas purification device is disposed on the upper surface cover. The combine according to claim 1, wherein the combine is configured to cover the body.   The exhaust gas outlet side of the tail pipe is extended between the upper surface of the threshing device and the lower surface of the grain discharge conveyor via a pipe outlet side support that is erected upward from the upper surface of the threshing device. The combine according to claim 2.

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