JP2017104083A - Combine-harvester - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a combine-harvester for retaining an arrangement space for a urea water tank without enlarging the external dimensions of a combine-harvester.SOLUTION: A combine-harvester comprises: an engine as a power source mounted on a running airframe 1; an exhaust gas purification case for removing a nitrogen oxide substance from the inside of the exhaust gas of the engine; a urea water tank 174 for accommodating urea water fed to the exhaust gas purification case; and a grain tank 7 for accommodating harvested grain. The grain tank 7 is formed with a cavity 254 arranged with the urea water tank 174.SELECTED DRAWING: Figure 15

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 such as a harvester that harvests cereals for feed and collects it as feed. The present invention relates to a combine equipped with an exhaust gas purification device that removes particulate matter (soot, particulates) contained in the exhaust gas or nitrogen oxides (NOx) contained in the exhaust gas.

  Conventionally, a diesel particulate filter case (hereinafter referred to as a DPF case) and a selective catalytic reduction catalyst have been installed in the exhaust path of a diesel engine as an exhaust gas purification device (exhaust gas aftertreatment device). A technique is known in which a case (hereinafter referred to as an SCR case) is provided, exhaust gas is introduced into the DPF case and the SCR case, and the exhaust gas discharged from the diesel engine is purified (see, for example, Patent Documents 1 to 3). ).

JP 2009-74420 A JP 2012-21505 A JP 2012-177233 A

  When removing nitrogen oxides in exhaust gas using the selective catalytic reduction (SCR) method, it is necessary to supply a reducing agent (for example, urea). Therefore, when the SCR denitration apparatus is mounted on a combine, not only an SCR case but also a space for installing a reducing agent tank containing a reducing agent is required.

  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 according to the present invention includes an engine that is a power source mounted on a traveling machine body, an exhaust gas purification device that removes nitrogen oxides in the exhaust gas of the engine, and the exhaust gas purification device In the combine provided with a reducing agent tank for storing the reducing agent supplied to the tank and a grain tank for carrying the harvested grain, the grain tank is for a reducing agent tank in which the reducing agent tank is mounted in the middle of the side surface. A recess is provided.

  The combine of this invention WHEREIN: The said grain tank is comprised so that rotation to the traveling machine body outer side is possible, and you may make it the said recessed part for reducing agent tanks provided in the rotation fulcrum vicinity of the said grain tank.

  Further, in the combine of the present invention, for example, the traveling direction of the traveling machine body is the front-rear direction, the pivot point of the grain tank is provided at the rear of the grain tank, and the grain tank front is opened outward from the machine. The grain tank may be rotatable, and the reducing agent tank recess may be provided on a side surface of the grain tank close to the rotation fulcrum.

  Furthermore, in the combine according to the present invention, the engine is disposed on the front side of the grain tank, and is disposed on the lower side of the purifying device installation concave portion in which the front side of the grain tank is cut off from the traveling machine body. A purification device support frame is provided, and the exhaust gas purification device is installed on the purification device support frame, while the recess for the reducing agent tank is formed by notching a rear side of the grain tank. The reducing agent tank is installed at a position outside the traveling machine body with respect to the rotation fulcrum, and a reducing agent pipe for connecting the reducing agent tank and the exhaust gas purification device is arranged along the grain tank. You may do it.

  Further, in the combine according to the present invention, the reducing agent pipe is led from the reducing agent tank to the traveling machine body center side from the turning fulcrum, led to the front of the running machine body through the lower part of the grain tank, and the purification The exhaust gas purification device may be guided along the device support frame.

  In the combine according to the present invention, a reducing agent water supply device for supplying the reducing agent to the exhaust gas purification device is installed in the middle of the reducing agent pipe, and the reducing agent water supply device is supported by the purification device. You may make it fix to the support body for supply apparatuses provided in the frame for operation.

  In the combine according to the present invention, the grain tank is provided with a reducing agent tank recess in which the reducing agent tank is arranged, so that a space for arranging the reducing agent tank can be secured without increasing the outer dimensions of the combine.

  Further, the grain tank is configured to be pivotable to the outside of the traveling machine body with a support member as a pivot, and the reducing agent tank recess is provided on a side surface of the grain tank close to the pivot point. If it is made, the bending at the time of rotation of a grain tank can be made small regarding the reducing agent piping connected to a reducing agent tank.

  Further, the recess for the reducing agent tank is provided at a position on the outer side of the traveling machine body with respect to the rotation fulcrum, and the reducing agent pipe connected to the reducing agent tank is located on the traveling machine body center side from the reducing agent tank with respect to the rotation fulcrum. In this way, it is possible to prevent the reducing agent pipe from hindering the rotation of the grain tank.

  Furthermore, if the reducing agent pipe is guided to the exhaust gas purification device side through the lower part of the grain tank, the reducing agent pipe can be prevented from obstructing the rotation of the grain tank.

  If the traveling direction of the traveling machine body is the front-rear direction, the engine is disposed on the front side of the grain tank, and the reducing agent tank recess is provided on the rear side of the grain tank. Can be prevented from being affected by heat from the engine.

It is a left view of the 6-row harvesting combine which shows embodiment of this invention. It is the same top view. It is the same right view. It is a perspective view which shows the positional relationship of engine peripheral components, a grain tank, and a threshing machine. It is a front view which shows the structure of an exhaust-gas purification apparatus periphery. It is a back perspective view of an exhaust gas purification device attachment part. FIG. 7 is an enlarged explanatory view of FIG. 6. It is the same rear view. It is a perspective view which shows arrangement | positioning of an engine and an exhaust-gas purification apparatus. It is a perspective view which shows the support structure of an exhaust-gas purification apparatus. It is a back perspective view which shows the support structure of an exhaust-gas purification apparatus. It is a perspective view which shows the structure of an exhaust-gas purification apparatus and urea water supply apparatus periphery. It is a perspective view which shows the structure around an exhaust-gas purification apparatus attachment part. It is a perspective view which shows arrangement | positioning of piping. It is a back perspective view showing arrangement of a grain tank and a vertical take-out conveyor. It is a top view which shows the state which the back cover opened. It is a rear view which shows arrangement | positioning of a urea water tank. It is a right view which shows arrangement | positioning of a urea water tank. It is a top view which shows rotation of a grain tank. It is a top view which expands and shows rotation of a grain tank. It is a top view which shows the recessed part of a grain tank in a partial cross section. It is a schematic diagram for demonstrating urea water supply. It is a rear view which shows a supply stand and a urea water tank. It is a right view which shows a supply stand and a urea water tank.

<First Embodiment>
Below, 1st Embodiment which actualized this invention is described based on FIGS. With reference to FIGS. 1-4, the whole structure of the combine of embodiment mounted with the diesel engine 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 4, 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 (Glenn 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 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 8a, and the grains inside the grain tank 7 can be 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, a fuel tank 31 that contains fuel to be supplied to the engine 14 is disposed on the left rear portion of the traveling machine body 1, and diesel fuel is injected into the fuel tank 31 from the outside of the threshing device 5 on the left side. It is configured to be replenishable. That is, the fuel tank 31 is installed on the traveling machine body 1 at a position below the sewage cutter 65 at the rear of the threshing device 5, and the fuel filler port 32 is extended to the left side of the threshing device 5 to It is possible to refuel.

  As shown in FIG. 1 and FIG. 2, a clipper-type cutting blade device 52 that cuts a stock of uncut grain culm planted on a farm field is provided on a cutting frame 51 connected to a cutting rotation fulcrum shaft 4 a of the cutting device 3. Is provided. In front of the cutting frame 51, a stalk raising apparatus 53 for 6 stalks that causes uncut cereals planted in the field is arranged. Between the culm pulling device 53 and the front end (feed start end side) of the feed chain 6, a culm transporting device 54 that transports the harvested 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 waste 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 drum 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 from the first 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 slag passed from the rear end side of the feed chain 6 to the slag chain 64 (the slag from which the grain has been threshed) is discharged to the rear of the traveling machine body 1 in a long state or at the rear part of the threshing device 5 After being cut to a suitable length by the provided waste cutter 65, it is configured to be discharged to the lower rear of the traveling machine body 1.

  Next, referring to FIGS. 4 to 13, a first case 75 (diesel particulate filter, DPF) and a second case 229 (selective catalyst reduction, SCR) as the exhaust gas purification device 74, the diesel engine 14, Will be described. The first case 75 removes particulate matter in the exhaust gas of the diesel engine 14. The second case 229 (exhaust gas purification case) constitutes an SCR system that removes nitrogen oxides in the exhaust gas of the diesel engine 1.

  As shown in FIGS. 4 to 9, the exhaust gas purification device 74 includes a continuous regeneration type first case 75 for introducing the exhaust gas of the diesel engine 14. The first case 75 as an exhaust gas purification case is formed in a long cylindrical shape extending long in the front-rear direction, and 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 such as platinum that generates nitrogen dioxide (NO2) and the collected particulate matter (PM) are continuously oxidized and removed at a relatively low temperature. The soot filter 80 having a honeycomb structure is arranged in series in the moving direction of the exhaust gas (from the front side to the rear side).

  4 to 9, a purification inlet pipe 81 as an exhaust gas inlet pipe is welded and fixed to the inlet side case 76, and one end side of a purification outlet pipe 82 as an exhaust gas outlet pipe is fixed to the outlet side case 77. Fasten the bolts. One end side of a urea mixing pipe 239 (exhaust pipe), which will be described later, is fixed to the other end side of the purification outlet pipe 82 with a flange, and the urea mixing pipe 239 is connected to the purification outlet pipe 82. The exhaust gas of the diesel engine 14 is introduced into the first case 75 from the purification inlet pipe 81, and the exhaust gas in the first case 75 is discharged from the purification outlet pipe 82 to the urea mixing pipe 239. . The inlet side case 76 and the outlet side case 77 are detachably fastened by a plurality of thick plate intermediate flange bodies 84 and a plurality of bolts.

  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 9, as an exhaust gas purification device 74 for purifying the exhaust gas discharged from each cylinder of the diesel engine 1, nitrogen oxide substances in the exhaust gas of the diesel engine 1 are removed. A second case 229 is provided as a selective catalytic reduction (SCR) system. As shown in FIGS. 4 and 7, like the first case 75, the second case 229 is formed in a long cylindrical shape extending long in the front-rear direction, and the second case 229 is used for urea selective catalyst reduction. An SCR catalyst 232 and an oxidation catalyst 233 are provided so as to reduce nitrogen oxide material (NOx). An SCR inlet pipe 236 for taking in the exhaust gas and an SCR outlet pipe 237 for discharging the exhaust gas are provided at the upper and lower ends of the second case 229 (one end side and the other end side in the exhaust gas movement direction).

As shown in FIGS. 7 and 8, an SCR outlet pipe 237 is provided at the rear end portion of the second case 229 via the outlet pipe bracket 150, and the rear end portion of the urea mixing pipe 239 is provided at the outlet pipe bracket 150 via the pipe support 151. The urea injection part 240 is fastened and fixed, and the urea injection part 240 at the rear end of the urea mixing pipe 239 is detachably connected to the purification outlet pipe 82 at the rear end of the first case 75 via the bolt fastening flange 152. ing. On the other hand, the SCR inlet pipe 236 is connected to the front end side of the urea mixing pipe 239. The SCR inlet pipe 236 is connected to the purification outlet pipe 82 via the urea mixing pipe 239, and the exhaust gas of the first case 75 is discharged. It is configured to be introduced into the second case 229. Note that urea water (reducing agent) in a urea water tank 174 (reducing agent tank), which will be described later, is supplied into the urea mixing pipe 239, and the urea water is added to the exhaust gas from the first case 75 to the second case 229. It is configured to be decomposed and mixed as ammonia. It is also possible to use other reducing agents such as anhydrous ammonia or aqueous ammonia instead of urea water. The exhaust gas of the diesel engine 14 is purified by the first case 75 and the second case 229 and is discharged from the tail pipe 83 to the outside of the machine.

  As shown in FIGS. 6 to 8, a tail pipe 83 is supported on the upper surface side of the threshing device 5. The pipe bracket 246 is bolted to the right side of the upper surface of the threshing device 5, and the pipe bracket 246 is erected on the upper surface of the threshing device 5 (the threshing upper surface frame at the upper right corner of the threshing machine housing). The lower end side of the rear pipe support 248 is bolted to the rear pipe support 248, the rear end side of the tail pipe 83 is fixed to the upper end side of the rear pipe support 248, and the exhaust gas outlet on the rear end side of the tail pipe 83 is directed to the rear of the machine body. Open. Also, as shown in FIGS. 8, 10 and 11, a pipe bracket 247 is provided on the upper surface of the lower bracket 245 which is welded and fixed to the rear end of a case supporting front and rear frame 250, which will be described later. The bottom end side of the tail pipe 83 is fastened to the top end side of the front pipe support 249, the front end side of the tail pipe 83 is connected to the SCR outlet pipe 237, and the exhaust gas of the second case 229 is exhausted. Is discharged from the tail pipe 83.

  With the above configuration, in the exhaust gas purification device 74, first, the oxidation catalyst 79 and the soot filter 80 in the DPF 75 reduce carbon monoxide (CO) and hydrocarbons (HC) in the exhaust gas of the diesel engine 14. Is done. Next, the urea water from the urea injection unit 240 is mixed with the exhaust gas from the diesel engine 14 inside the urea mixing pipe 239, and the urea water is converted into ammonia by the SCR catalyst 232 and the oxidation catalyst 233 in the second case 229. As a result, the nitrogen oxide substance (NOx) in the exhaust gas mixed as is reduced. Then, the exhaust gas purified in the second case 229 is discharged from the tail pipe 83 toward the upper surface side of the rear part of the threshing device 5. A gap is formed at the connecting portion between the SCR outlet pipe 237 on the small diameter side and the tail pipe 83 on the large diameter side. Outside air is sucked into the tail pipe 83 from the gap, and the exhaust gas from the SCR outlet pipe 237 is exhausted. The exhaust gas having a reduced exhaust temperature is discharged from the tail pipe 83 by mixing the outside air.

  As shown in FIGS. 3 to 5, the grain tank 7 has a purification device installation recess 7 a having a shape in which the front left side is cut out, a grain discharge conveyor installation recess 7 b in the front-rear groove shape on the upper left side, and a left side surface. A recessed portion 7c for setting up a cereal conveyor is provided in the center with a step along the vertical direction, and a recessed portion 254 for installing a urea water tank in a shape in which a corner on the outside of the traveling machine body 1 on the rear side is cut out. A space behind the engine 14 is provided in the purification device installation recess 7a on the front surface of the grain tank 7, and an exhaust gas purification device 74 is disposed. In the recess 7b for setting the grain discharge conveyor on the upper surface of the grain tank 7, the grain discharge conveyor 8 having its tip held in the conveyor support 90 is stored along the recess 7b for setting the grain discharge conveyor. Moreover, the cereal conveyor 63 is arrange | positioned at the recessed part 7c for the cereal conveyor installation on the left side surface of the grain tank 7, and the rice cake discharge port of the upper part of the cereal conveyor 63 was provided in the recessed part 7c for cereal conveyor installation. Connected to the socket. A urea water tank 174 described later is disposed in the urea water tank installation recess 254 at the outer corner of the traveling body 1 on the rear side of the grain tank 7.

As shown in FIGS. 1 to 5, 15, and 16, a transverse conveyor 8 b is disposed at the bottom of the grain tank 7 in the front-rear direction, and a lower end (base end) of the vertical take-out conveyor 8 a is disposed at the rear end of the transverse conveyor 8 b. ) Side is connected. Also, an outside bottom plate 7d and an inside bottom plate 7e are provided at the bottom of the grain tank 7, the outside bottom plate 7d and the inside bottom plate 7e are inclined toward the transverse feed conveyor 8b, and the grains inside the grain tank 7 are transversely fed. Flow down in the direction of 8b. The transverse feed conveyor 8b is extended along the front and rear of the bottom of the grain tank 7, and conveys the grains flowing down along the bottom plate of the grain tank 7 to the rear vertical take-out conveyor 8a.

  The vertical take-out conveyor 8a is connected to the lower end side transfer case 8c provided at the rear end of the transverse feed conveyor 8b protruding from the rear end surface of the grain tank 7, and is connected to the upper side of the grain tank 7 along the rear end surface of the grain tank 7. It is extended toward. The grain discharge conveyor 8 is connected to the upper end side transfer case 8d connected to the upper end of the vertical take-out conveyor 8a and the rear end, and extends forward. Therefore, the grain conveyed from the transverse feed conveyor 8b of the grain tank 7 is carried into the vertical take-out conveyor 8a via the lower end side transfer case 8c. Then, when the grain is conveyed upward in the vertical take-out conveyor 8a, it is carried into the grain discharge conveyor 8 via the upper end side transfer case 8d. Further, in the grain discharge conveyor 8, the grain is conveyed forward and discharged from the throat throwing hole 9.

  The lower end (base end) side of the vertical take-out conveyor 8a is connected to the grain tank 7 via a lower end side transfer case 8c. Further, the bottom of the lower end side transfer case 8c is fitted to a protrusion 40 provided on the traveling machine body 1, and the grain tank 7 to which the lower end side transfer case 8c is fixed is rotated with respect to the traveling machine body 1. It is pivotally supported. The vertical take-out conveyor 8a includes a lower cylindrical case 41 connected to the lower end side transfer case 8c and an upper cylindrical case 42 connected to the upper end side transfer case 8c. 42 is rotatably connected.

  The upper cylinder case 42 includes a turning gear 43 on the outer peripheral surface of the lower end, and the turning gear 43 meshes with a gear (not shown) provided on the rotating shaft of the turning motor (actuator) 44 to turn the turning motor. Based on the rotation from 44, it is configured to be rotatable. The upper cylindrical case 42 is gripped by a U-shaped support body 45 whose both ends are connected to the rear side surface of the grain tank 7, and the lower part thereof is a support frame 46 erected from the traveling machine body 1. It is gripped by a U-shaped support body 47 connected to the upper end. That is, the upper cylinder case 42 is pivotally supported by the support bodies 45 and 47 fixed to the grain tank 7 and the support frame 46. Accordingly, the upper cylinder case 42 is rotated by the turning motor 44, whereby the grain discharge conveyor 8 is turned with respect to the grain tank 7 (with the vertical take-out conveyor 8a as the rotation axis).

  The lower cylinder case 41 has a lower end (base end) side fixed to the grain tank 7 via a lower end side transfer case 8c, while an upper end side is fitted to the upper cylinder case 42, and the upper cylinder case 42 is on the lower side. The cylinder case 41 is rotatable. The turning motor 44 is mounted and fixed on a motor fixing bracket 48 provided on the side surface of the support 47, and a gear provided at the tip of the motor shaft of the turning motor 44 protruding from the bottom surface of the motor fixing bracket 48. Further, the turning gear 43 of the upper cylinder case 42 is engaged. A U-shaped support body 49 that holds the upper portion of the lower cylinder case 41 is fixed to the bottom surface of the motor fixing bracket 48. That is, the lower cylinder case 41 is fixed at the lower end side to the grain tank 7, and is supported at the upper end side by the support body 49 fixed to the support frame 46.

  As shown in FIGS. 5, 7, and 8, a lock pin 161 and a lock arm 162 for fixing and supporting the grain tank 7 are provided at the storage position of the traveling machine body 1, and the lock pin 161 is fixed to the upper right side of the threshing device 5. A lock arm 162 is attached to the left side of the front surface of the grain tank 7. A lock pin fixing frame 160 is provided on the right side of the upper surface of the threshing device 5, and the lock pin 161 is fixed to the tip of the lock pin fixing frame 160. Further, a lock release lever 164 is attached to the front surface of the grain tank 7, and the lock release lever is connected to the lock arm 162 via the linkage rod 163 so that the lock arm 162 can be detached from the lock pin 161 by operating the lock release lever. . The grain tank 7 can be rotated around the axis line of the vertical take-out conveyor 8a by the operation of releasing the lock arm 162 of the lock release lever.

  A wheel 167 that slides on the traveling machine body 1 is pivotally supported on the lower edge of the front end surface of the grain tank 7, and the wheel 167 moves in the left-right direction on the traveling machine body 1 so that the front of the grain tank 7 can be moved. The grain tank 7 can be opened and closed while being supported. A rail 168 for receiving the wheel 167 of the grain tank 7 is provided on the right side (outer side) of the traveling machine body 1. The rail 168 has a shape bent downward toward the outside of the machine (right side), and when the grain tank 7 opened to the outside of the machine (right side) is closed, the grain tank is placed on the traveling machine body 1. The wheel 167 is guided to the upper surface of the traveling machine body 1 so that 7 can be mounted. A positioning member 169 is provided on the lower edge of the front end surface of the grain tank 7. The positioning member 169 is composed of a plate member provided on the outer side (right side) of the wheel 167, and the lower side (right side) end of the positioning member 169 is bent downward in a shape matching the bending of the rail 168. Therefore, when the grain tank 7 is closed, the bent portion of the positioning member 169 comes into contact with the bent portion of the rail 168, so that the installation position of the grain tank 7 is fixed.

  The vertical take-out conveyor 8a is fixed to the grain tank 7 so as to stand along the rear end surface of the grain tank 7, and is rotatably supported by the protrusion 40 and the support bodies 45, 47, and 49. The front end surface of the grain tank 7 is supported by wheels 167 that slide on the traveling machine body 1. Accordingly, the grain tank 7 can be turned around the longitudinal center of the vertical conveyor 8a toward the outside of the machine, and the right side surface of the threshing device 5 and the rear surface of the engine room 97 described later can be opened. A rear cover 30 covering the periphery of the vertical take-out conveyor 8a is provided at the rear of the grain tank 7 so as to be openable and closable. A bottom cover body 165 is detachably provided on the outer surface of the machine-side bottom plate 7d of the grain tank 7.

  Next, as shown in FIGS. 9 to 11, the 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 has a square pipe-shaped left column 92 disposed on the left, an inverted U-shaped right column 93 disposed on the right, and left and right columns 92, 93a. A horizontal frame 94 in the form of a square pipe fixed to the frame. One end of the horizontal frame 94 is connected to the upper end of the left column body 92, while the other end is connected and fixed to a rectangular pipe-shaped vertical frame 93 a that is fixed to the upper portion of the right column body 93. In addition, as shown in FIG. 1, the conveyor support body 90 is provided in the upper end side of the left support | pillar body 92, and the grain discharge conveyor 8 is supported in a storage position via the conveyor support body 90. As shown in FIG.

  Further, a rubber pressure contact leg (not shown) provided at the rear bottom of the driving cabin 10 is brought into contact with the upper surfaces of the left and right cradles 96 of the horizontal frame 94 from above to press the horizontal pressure frame at the bottom of the driving cabin 10. The rear part of the driving cabin 10 is supported on each of the cradles 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, an air cleaner 123 that supplies outside air to the diesel engine 14 and a pre-cleaner 124 that takes in outside air into the air cleaner 123 are provided. An air cleaner 123 is disposed on the right side of the exhaust gas purification device 74 in the upper surface of the engine room 97, and a precleaner 124 is disposed on the right front side of the grain tank 7 and above the engine room 97. The air cleaner 123 is connected via Combustion air is taken into the compressor case 118 a of the supercharger 118 of the diesel engine 14 from the precleaner 124 through the air cleaner 123. The air cleaner 123 is positioned on the front right side of the exhaust gas purification device 74 by being fixed on the right side of the rear surface of the horizontal frame 94 of the engine room frame 91.

As shown in FIGS. 4 and 9, a supercharger 118 that forcibly sends air to the diesel engine 14 is disposed at an exhaust gas outlet (exhaust manifold 115) of the diesel engine 14. The supercharger 118 is installed on the upper front side of the diesel engine 14, and a compressor case 118a incorporating a blower wheel is provided on the right side thereof, and a turbine case 118b incorporating a turbine foil is provided on the left side. The intake intake side provided at the right end of the compressor 118 a communicates with the intake discharge side of the air cleaner 123 via the air supply pipe 120. On the other hand, an exhaust outlet pipe 99 installed at the left end of the turbine case 118b is connected to an exhaust gas inlet (DPF inlet pipe 81) of an exhaust gas purifying device 74 as a post-treatment device via a bendable bellows-like exhaust introduction pipe 98. It connects with the exhaust connection pipe | tube 119 connected to.

  As shown in FIGS. 3, 4, and 9, the exhaust gas purification device 74 including the first case 75 and the second case 229, the air cleaner 123, and the precleaner 124 are located on the back of the engine room frame 91 with respect to the engine 14. They are arranged to the left and right. That is, the air cleaner 123 and the pre-cleaner 124 serving as the intake system are disposed on the right compressor case 118a side with respect to the turbocharger 118 on the front surface of the engine 14, while the exhaust gas purification serving as the exhaust system is disposed on the left turbine case 118b side. A device 74 is arranged. As described above, since the intake path and the exhaust path of the engine 14 including the supercharger 118 are arranged to the left and right, the intake path and the exhaust path can be configured with short paths, and the exhaust path through which high-temperature exhaust gas passes can be provided. On the other hand, the intake path can be spaced apart.

  Next, with reference to FIGS. 4 to 13, a mounting structure and a support structure of the exhaust gas purification device 74 will be described. As a sandwiching body for arranging the first case 75 and the second case 229 in parallel, a pair of front case fixing body 100 and rear case fixing body 101 and four fastening bands 85 are provided. The first case 75 is fixed to the left mounting portions of the front case fixing body 100 and the rear case fixing body 101 by the front and rear fastening bands 85, and the right mounting portions of the front case fixing body 100 and the rear case fixing body 101 are fixed to the right mounting portions. The second case 229 is fixed by the front and rear fastening bands 85. Two fastening bands 85 are respectively attached to the upper surfaces of the first case 75 and the second case 229 in a semi-winding manner, and the lower ends of the fastening bands 85 are bolted to the case fixing bodies 100 and 101, respectively. . Thereby, the cylindrical first case 75 and second case 229 which are long in the front-rear direction are respectively disposed horizontally.

  A pair of right support frame body 102 and left support frame body 103 made of sheet metal having an end face L shape are bolted to the left and right ends of front case fixed body 100 and rear case fixed body 101 so that the mounting position (support posture) can be adjusted. The case fixing bodies 100 and 101 and the support frame bodies 102 and 103 are connected in a square frame shape, and the first case 75 and the second case 229 are fixed to each other via the fastening band 85 to purify the exhaust gas as an exhaust purification unit. The apparatus 74 is comprised. It should be noted that the inner diameter dimension of the bolt through holes of the support frame bodies 102, 103 is formed larger than the outer diameter dimension of the bolts connecting the case fixing bodies 100, 101 and the support frame bodies 102, 103, The bolts are loosely inserted into the bolt through holes 103, and when the case fixing bodies 100, 101 and the support frame bodies 102, 103 are fixed, the connecting frame bodies 102, 103 are connected to the case fixing bodies 100, 101. Are supported in a predetermined posture, and bolts are screwed onto the case fixing bodies 100 and 101, and the support frame bodies 102 and 103 are bolted to the case fixing bodies 100 and 101.

  By fixing the right support frame body 102 to the case support front and rear frame 250 and the case support bracket 253, the exhaust gas purification device 74 is supported on the traveling machine body 1. The case support front / rear frame 250 supports the right support frame body 102 via brackets 250a and 250b. The case support bracket 253 supports the left support frame body 103.

As shown in FIGS. 4 and 8 to 12, the case support front / rear frame 250 is arranged on the right side of the threshing device 5 so that the longitudinal direction is substantially the front / rear direction, and the front left side of the grain tank 7 (the threshing device 5 side). ) Is provided below the recess 7a for purifying device installation. The front end portion of the case support front / rear frame 250 is disposed on the left side of the rear end portion, and the longitudinal direction of the case support front / rear frame 250 is inclined with respect to the front / rear direction.

  Further, the case supporting front and rear frame 250 is arranged so that its longitudinal direction is substantially horizontal. The front end portion of the case support front / rear frame 250 is connected to a midway portion at a substantially central position in the longitudinal direction (left / right direction) of the horizontal frame 94. The frames 94 and 250 are connected to each other by bolting a case support bracket 94a provided from the upper surface to the rear surface of the frame 94 and a front end bracket 250d provided on the front end surface of the frame 251.

  Further, the rear end side of the case support front and rear frame 250 is supported by a case support column frame 251 erected on the traveling machine body 1. The frames 250 and 251 are bolted to an upper end bracket 251a provided on the upper end surface of the frame 251 and a lower surface bracket 250c provided on the lower surface of the rear end side middle portion of the frame 250 so as to be separated from the rear end surface of the frame 250. Are linked together. In addition, a lower bracket 250a projecting to the right is welded and fixed to the middle part of the case supporting front and rear frame 250 in front of the lower surface bracket 250c.

  The lower bracket 250a is disposed behind the center position in the longitudinal direction of the frame 250 (between the center position and the lower surface bracket 250c). An upper bracket 250b is fixed to the upper surface of the lower bracket 250a by welding. The lower surface of the right support frame body 102 is detachably fixed to the upper surface of the upper bracket 250b with bolts. The height position of the upper surface of the upper bracket 250b is higher than the height positions of the upper surface of the horizontal frame 94 and the upper surface of the case supporting front and rear frame 250.

  As shown in FIGS. 4, 5, and 8, the left support frame body 103 is supported on the upper surface side of the threshing device 5. The case support bracket 253 is bolted to the right side of the upper surface of the threshing device 5, and the lower surface of the left support frame body 103 is bolted to the upper surface of the case support bracket 253. The case support bracket 253 is bolted to a case support reinforcing member 228 attached to the threshing right upper frame 227 of the threshing device 5 with the threshing device 5 housing sandwiched therebetween. The case support reinforcing member 228 includes a plurality of ribs provided perpendicularly to the contact surface with the threshing device 5 housing of the case support bracket 253 mounting position. Further, the case support bracket 253 is arranged on the upper surface of the threshing device 5 so that the contact surface between the bracket 253 and the left support frame body 103 and the contact surface between the upper bracket 250b and the right support frame body 102 are approximately at the same height. It is attached. In this way, as shown in FIGS. 4 and 5, the first case 75 and the second case 229 are supported at an upper position in the recess 7 a of the grain tank 7.

  As shown in FIGS. 4, 7, and 9, the case support front / rear frame 250 extends from the case support column frame 251 toward the horizontal frame 94 at a position between the air cleaner 123 and the purification inlet pipe 81. Yes. Thereby, not only can a space for connection between the bellows-like exhaust introduction pipe 98 disposed below the horizontal frame 94 and the purification inlet pipe 81 of the first case 75 be secured, but also buffering with the air cleaner 123 can be prevented. Furthermore, since the case support front and rear frame 250 is disposed at a position between the intake path including the air cleaner 123 and the exhaust path connected to the first case 75, the influence of exhaust heat from the exhaust path on the air cleaner 123. Can be reduced.

As shown in FIGS. 4 and 5, an exhaust gas purification device 74 having a first case 75 and a second case 229 is disposed in a recess 7 a of the grain tank 7 provided on the surface facing the engine room 97 of the grain tank 7. Has been. Thus, the exhaust gas purification device 74 can be disposed between the grain tank 7 and the engine room 97 at a position close to the engine 14, but the operator can be prevented from coming into contact with the exhaust gas purification device 74 that reaches a high temperature. . Further, since the exhaust heat from the engine room 97 can be guided to the exhaust gas purification device 74, the exhaust gas purification device 74 can be disposed in a high temperature environment necessary for purification of the exhaust gas. The purification effect can be maintained.

  Further, the first case 75 and the second case 229 of the exhaust gas purification device 74 are arranged side by side with the longitudinal direction as the front-rear direction. And the 1st case 75 is arrange | positioned with respect to the 2nd case 229 at the threshing apparatus 5 side. As a result, the first case 75 can be disposed at a position close to the exhaust port of the engine 14, and the exhaust path from the engine 14 to the first case 75 is configured with a short path, so that the regeneration processing in the first case 75 can be performed with high performance. Can be maintained. Further, since the second case 229 and the urea mixing pipe 239 are covered with the grain tank 7, the second case 229 and the urea mixing pipe 239 can be arranged in a high temperature environment surrounded by the grain tank 7 behind the engine room 97. In addition, the purification ability of the second case 229 can be maintained at a high level while preventing the urea water from freezing.

  Further, the first case 75 and the second case 229 are supported horizontally and arranged in parallel across the recess 7 a of the grain tank 7 from the threshing device 5. By supporting the first case 75 and the second case 229 horizontally, the exhaust gas purification device 74 can be compactly arranged at a position higher than the engine 14, and high-temperature exhaust gas from the engine 14 is sent to the exhaust gas purification device 74. A structure that is easy to guide can be realized. Further, by disposing the exhaust gas purification device 74 at a position higher than the engine 14, it is possible to prevent water generated due to condensation due to a temperature drop when the engine 14 is stopped from accumulating in the exhaust gas purification device 74.

  Further, the urea mixing pipe 239 connected between the purification outlet pipe 82 of the first case 75 and the SCR inlet pipe 236 of the second case 229 is disposed in parallel with the longitudinal directions of the first case 75 and the second case 229. ing. Thereby, the 1st case 75, the 2nd case 229, and the urea mixing pipe | tube 239 are comprised by integral unit structure, and the exhaust gas purification apparatus 74 can be installed compactly inside the recessed part 7a of the grain tank 7 front surface. Therefore, while the space for installing the exhaust gas purification device 74 can be easily secured, the recessed portion 7a of the grain tank 7 can be made narrow so that the grain storage capacity of the grain tank 7 can be secured.

  Moreover, as shown in FIG. 13, the purification apparatus cover body 261 used as a heat-shielding member is provided in the right side part of the threshing apparatus 5 upper surface. The purifier cover body 261 is bolted to the lock pin fixing frame 160 at the front side and fixed to a rod-like member that is erected on the upper right side of the threshing device 5 housing. It is arranged on the left side. The left side (the threshing device 5 side) of the exhaust gas purification device 74 is covered with the purification device cover body 261. Thereby, the exhaust gas purification device 74 can be disposed in a high temperature environment, and the influence on the peripheral components due to heat radiation from the exhaust gas purification device 74 can be reduced.

  Next, as shown in FIGS. 14 to 22, a urea water supply device that supplies urea water to the urea water tank 174 that stores urea water (urea aqueous solution for selective catalyst reduction) and the urea water injection unit 240 of the urea mixing pipe 239. 175. The urea water supply device 175 supplies the urea water in the urea water tank 174 to the urea water injection unit 240 of the urea mixing pipe 239, so that the urea water is supplied from the urea water injection valve 178 (dosing module) of the urea water injection unit 240. Spray into the urea mixing tube 239.

As shown in FIGS. 14 to 18, the urea water tank 174 has a vertically long shape and is disposed in a recess 254 provided in the grain tank 7. FIG. 17 shows a state in which the bottom cover body 165 and the right cover body 166 constituting the right side surface of the grain tank 7 above the bottom cover body 165 are removed, and the inside of the grain storage unit 260 in the grain tank 7 Is visible. The recesses 254 are provided at the corners outside the traveling machine body 1 on the rear side of the grain tank 7. The recess 254 has a bottom 254a on which the urea water tank 174 is mounted. In addition, a tank mounting base 255 is disposed on the bottom 254 a of the recess 254. A urea water tank 174 is mounted on the tank mounting base 255. Since the grain tank 7 includes the recess 254 in which the urea water tank 174 is disposed, the space for arranging the urea water tank 174 is ensured without increasing the outer dimensions of the combine. Moreover, since the recessed part 254 has the bottom part 254a in which the urea water tank 174 is mounted, a member for mounting the urea water tank 174 is not required separately. Therefore, the cost can be reduced as compared with the case where a member for mounting the urea water tank 174 is separately provided. Further, since the recess 254 is provided on the rear side surface of the grain tank 7, the urea water tank 174 is not affected by the heat from the engine 14.

  As shown in FIGS. 17 and 18, the urea water tank 174 is detachably fixed in the recess 254 by two bands 256 that are mounted side by side in the vertical direction. The material of the band 256 is, for example, a material having elasticity, and here is rubber. Ring metal fittings 257 are respectively provided at both ends of each band 256. In addition, a total of four hook fittings 258 are welded and fixed to two places on the rear surface of the grain tank 7 on the left side of the concave portion 254 and two locations on the inner surface 254b of the concave portion 254 on the front side of the traveling machine body 1. . The band 256 is attached to the grain tank 7 by attaching the ring fitting 257 to the hook fitting 258. The grain tank 7 is provided with a fall prevention stay 259 that prevents the urea water tank 174 from falling. One end of the fall prevention stay 259 is fixed to the rear surface of the grain tank 7 at a position on the left side of the recess 25 on the rear surface of the grain tank 7, and the other end is fixed to the inner side surface 254 b of the recess 254.

  As shown in FIGS. 17, 18, and 22, a urea water tank sensor unit 271 is detachably attached to the upper surface opening of the urea water tank 174. The urea water tank sensor unit 271 includes a sensor unit main body 272 that functions as a lid for the opening 5, a urea water supply pipe 179 (reducing agent pipe) penetrating the sensor unit main body 272, and a urea water return pipe 180 (reducing agent). Piping), a cooling water feed pipe 273, a cooling water return pipe 274, a temperature sensor 183, a liquid level sensor 184, a urea water quality sensor 186 (for example, a concentration sensor), a sensor control unit 187, and the like. The urea water supply pipe 179 supplies urea water to the urea water supply device 175. The urea water return pipe 180 returns urea water from the urea water supply device 175 to the urea water tank 174. The sensor control unit 187 controls the operation of each sensor 183, 184, 186. The cooling water feed pipe 273 and the cooling water return pipe 274 are connected in the urea water tank 174. By sending the engine cooling water heated by the engine 14 from the cooling water feed pipe 273 to the cooling water return pipe 274 and passing through the urea water tank 174, the urea water is prevented from freezing.

  As shown in FIG. 22, the urea water supply device 175 includes a urea water pump 171 that pumps the urea water in the urea water tank 174 and a urea water supply electric motor 172 that drives the urea water pump 171. A urea water supply pipe 179 and a urea water return pipe 180 are connected between the urea water tank 174 and the urea water supply device 175. Further, an engine controller 181 that executes fuel injection control of the diesel engine 14 and the like, and a urea injection controller 182 that controls operations of the urea water supply device 175 and the urea water injection valve 178 are provided.

As shown in FIGS. 12 and 14, the urea water supply device 175 has a pump support (supply) that is welded and fixed to the left side surface and the front side surface of the case support column frame 251 that supports the exhaust gas purification device 74 (second case 229). Bolts are fastened to a support 185 for the device) and fixed. The urea water supply device 175 is attached to the left side surface on the upper end side of the pump support 185. The urea water supply device 175 and the pump support 185 are disposed at a height position between the height position of the exhaust gas purification device 74 and the height position of the urea water tank 174. 4 to 8, the urea injection controller 182 is attached to the rear side surface of the controller support 189 attached to the left side surface of the case support column frame 251. The controller support 189 is bolted to a controller bracket 251b welded to the left side surface of the case support column frame 251.

  As shown in FIGS. 14 and 22, a urea water injection pipe 177 that connects the urea water supply device 175 and the urea water injection valve 178 is provided. The urea injection controller 182 controls the operation of the urea water supply device 175 and the urea water injection valve 178, and sprays urea water from the urea water injection valve 178 into the urea mixing pipe 239. The urea water supplied into the urea mixing pipe 239 is configured to be mixed as ammonia in the exhaust gas from the first case 75 to the second case 229. A cooling water feed pipe 275 and a cooling water return pipe 276 are connected between the urea water injection valve 178 and the engine 14. The ends of the cooling water feed pipe 275 and the cooling water return pipe 276 on the urea water injection valve 178 side are connected to pipe connection portions provided on the urea water injection valve 178, respectively. The cooling water feed pipe 275 and the cooling water return pipe 276 are connected within the urea water injection valve 178. Engine cooling water heated by the engine 14 is sent from the cooling water feed pipe 275 to the cooling water return pipe 276 through the urea water injection valve 178, thereby preventing the urea water from freezing in the urea water injection valve 178. Is done.

  As shown in FIG. 14, one end of the urea water injection pipe 177 is connected to a pipe connecting portion provided at the rear part of the urea water injection valve 178, and is led to the left side from the connection position, and is then led downward. Further, the water is guided to the urea water supply device 175 through the purification outlet pipe 82, the urea injection unit 249, and the second case 229. Further, the cooling water feed pipe 275 and the cooling water return pipe 276 are guided from the connecting portion of the urea water injection valve 178 along the urea water injection pipe 177 to the lower side of the second case 229, and further the case supporting front and rear frame 250. Is guided forward along the frame 250 through the vicinity of the lower side of the substantially central portion of the longitudinal direction, and is guided downward to the engine 14 in the middle of the front side of the frame 250. With the above piping configuration, a compact piping configuration can be realized while reducing the influence of heat from the exhaust gas purification device 74 and the tail pipe 83.

  Note that the temperature sensor 183, the liquid level sensor 184, and the urea quality sensor 186 of the urea water tank sensor unit 271 are electrically connected to the urea injection controller 182. The urea injection controller 182 is also electrically connected with a temperature sensor 183, an upstream NOx sensor 188, and a downstream NOx sensor 189. The temperature sensor 183 detects the exhaust gas temperature in the urea water injection unit 249. The upstream NOx sensor 188 detects NOx in the exhaust gas that has passed through the diesel oxidation catalyst 79 and the soot filter 80 in the first case 75. The downstream NOx sensor 189 detects NOx in the exhaust gas that has passed through the SCR catalyst 232 and the oxidation catalyst 233 in the second case 229. The urea injection controller 182 controls the injection of urea water according to the detection signals of the temperature sensor 183 and the NOx sensors 188 and 189.

  The engine controller 181 and the urea injection controller 182 are electrically connected. Thereby, according to the operating condition etc. of the diesel engine 14, it is comprised so that urea water may be supplied in the urea mixing pipe | tube 239 at an appropriate time. The engine coolant is supplied to the coolant feed pipe 273 and the coolant return pipe 274 by opening and closing a valve 277 provided in the coolant feed pipe 273 under the control of the urea water injection controller 182. . Accordingly, the urea water in the urea water tank 174 is heated at an appropriate time according to the temperature of the urea water in the urea water tank 174 and the like.

As shown in FIG. 14, the urea water supply pipe 179 and the urea water return pipe 180 are once guided upward from the urea water supply device 175, then bent backward and passed through the rear rear of the pump support 185. It is guided to the rear side surface of the support column frame 251, further guided to the traveling machine body 1 side along the rear side surface of the case support column frame 251, and guided to the urea water tank 174 side through the lower part of the grain tank 7. Further, the cooling water feed pipes 273 and 275 and the cooling water return pipes 274 and 276 are led from the engine 14 to the front middle part of the lower side surface of the case supporting front and rear frame 250 and further led rearward along the frame 250. The support column frame 251 is guided to the rear side surface. Further, the cooling water feed pipe 273 and the cooling water return pipe 274 are guided to the traveling machine body 1 side along the rear side surface of the case support column frame 251 along the urea water supply pipe 179 and the urea water return pipe 180, and are used as a grain tank. 7 is led to the urea water tank 174 side. The cooling water feed pipe 275 and the cooling water return pipe 276 are guided from the rear surface side of the case support column frame 251 to the urea water injection valve 178. With the above piping configuration, a compact piping configuration can be realized. Moreover, the assembly | attachment property of the urea water supply apparatus 175 and piping improves. The pipes 179, 180, 273 to 276 are positioned by pipe clamps (not shown) attached to the traveling machine body 1, the rear surface of the grain tank 7, the case support front / rear frame 250, the case support post frame 251 and the like. .

  In addition, the urea water supply device 175 is disposed at a position higher than the urea water tank 174 and lower than the urea water injection valve 178. This is because the urea water supply device 175 and the urea are disposed after the urea water injection is stopped. Due to the height difference of the water injection valve 178, the urea water remaining in the urea water injection valve 178, the urea water injection pipe 177, or the like has an effect of flowing to the urea water supply device 175 side.

  Next, as shown in FIGS. 15 to 20, the grain tank 7 can be rotated to the outside of the traveling machine body 1 with a vertical take-out conveyor 8 a (supporting member) provided on the rear side of the traveling machine body 1 of the grain tank 7 as a rotation fulcrum. Is provided. In the grain tank 7, the recess 254 is provided on the side surface (rear surface) close to the vertical take-out conveyor 8 a (rotation fulcrum) among the side surfaces of the grain tank 7. Thereby, the urea water tank 174 can be arrange | positioned in the vicinity of a rotation fulcrum. Further, with respect to the urea water supply pipe 179, the urea water return pipe 180, the cooling water feed pipe 273, and the cooling water return pipe 274, the bending of the grain tank 7 during rotation can be reduced. Further, by rotating the grain tank 7 to the outside of the traveling machine body 1, the right side surface of the threshing device 5 and the rear surface of the engine room 97 can be opened, so that the operator can perform various maintenance operations such as exhaust gas purification device 74 and urea water supply device 175. Work can be done easily.

  As shown in FIGS. 15-20, the recessed part 254 is provided in the position of the traveling body 1 outer side rather than the vertical take-out conveyor 8a (rotation fulcrum). Further, a portion of the urea water supply pipe 179 connected to the urea water tank 174, the urea water return pipe 180, the cooling water feed pipe 273, and the cooling water return pipe 274 that faces the rear side of the grain tank 7 is the traveling machine body 1. In the left-right direction, it is led from the urea water tank 174 to the center side of the traveling machine body 1 from the vertical take-out conveyor 8a. Thereby, it is possible to prevent the pipes 179, 180, 274 and 275 from hindering the rotation of the grain tank 7. Further, the pipes 179, 180, 274 and 275 are guided from the position on the traveling machine body 1 center side to the exhaust gas purification device 74 side through the lower part of the grain tank 7 from the vertical take-out conveyor 8a. This configuration also prevents the tubes 179, 180, 274 and 275 from hindering the rotation of the grain tank 7.

  As shown in FIGS. 2, 3, 15, and 19 to 21, a rear cover 30 is provided on the corner portion of the grain tank 7 on the outer side and the rear side of the traveling machine body 1. The rear cover 30 is supported by the grain tank 7 through two hinges 192 attached to the corner portion of the grain tank 7 so as to be rotatable to the outside of the traveling machine body 1. The rear cover 30 covers the urea water tank 174 in a state where the rear cover 30 is closed. Thereby, it can reduce that the urea water tank 174 is exposed to direct sunlight.

Further, the water supply port 174a of the urea water tank 174 is not visible from the side of the combine machine body with the rear cover 30 closed. That is, when the water supply operation to the urea water tank 174 is performed, an operation of opening the rear cover 30 is necessary. On the other hand, as described above, the fuel filler port 32 of the fuel tank 31 extends to the left side of the threshing device 5 and is exposed outside the machine. In addition, the operation of opening the rear cover 30 during the water supply operation to the urea water tank 174 prevents a mistake in putting fuel and urea water. Further, since the fuel supply port 32 of the fuel tank 31 and the water supply port 174a of the urea water tank 174 are separately arranged on the left and right sides of the traveling machine body 1 on the left and right sides of the traveling machine body 1, it is possible to prevent mistakes in the fuel and urea water.

<Second Embodiment>
FIGS. 23 and 24 are explanatory views of a modified example in which a replenishment table capable of mounting a urea water supply container 263 is provided in the vicinity of the urea water tank 174. For example, the water supply port 174a of the urea water tank 174 is provided at a position higher than the position of the operator's waist, and there is a problem that it is difficult to perform the water supply work because the height position is high. Therefore, as shown in FIGS. 23 and 24, a replenishment table 280 attached to the vertical take-out conveyor 8a disposed on the rear side of the urea water tank 174 may be provided.

  The replenishment base 280 is attached to the vertical take-out conveyor 8a by a pair of replenishment base bands 281 and 281 and a replenishment base support member 283 that are attached to the vertical take-out conveyor 8a so as to surround the vertical take-out conveyor 8a. The band 281 has a shape in which a substantially U-shaped shape is divided into two by the curved portion of the shape. One end side (the substantially U-shaped curved portion) of the band 281 is connected by a mounting position adjusting bolt 284. The other end of the band 281 (the substantially U-shaped tip) is fastened to the supply base support member 283 with, for example, a bolt. The supply table support member 283 includes a bar member 285 that serves as a pivot for the supply table 280. The replenishment base 280 is provided so as to be pivotable from the substantially horizontal direction to the upper side between the substantially horizontal direction and the substantially vertical direction with the rod member 285 as a pivot point.

  As shown in FIG. 24, when water is supplied to the urea water tank 174, the replenishment base 280 is disposed in a substantially horizontal direction so that the water supply container 263 can be disposed on the replenishment base 280. When the replenishment base 280 is not used, the replenishment base 280 is provided. Is placed on the side of the vertical take-out conveyor 8a, and the supply table 280 is folded. By arranging the supply table 280 in a foldable manner in this way, the supply table 280 can be stored compactly when not in use. Further, since the supply table 280 is attached to the vertical take-out conveyor 8a so as to rotate together with the vertical take-out conveyor 8a, it can be used at any time. Further, the end of the band 281 opposite to the supply stand support member 283 is connected by a bolt 284, and the height position and mounting angle of the supply stand 280 are determined according to how the supply stand 280 is used by fastening the bolt 284. Is adjustable.

  The combine in 1st and 2nd embodiment is the engine 14 which is the motive power source mounted in the traveling body 1, the exhaust gas purification apparatus 74 which removes the nitrogen oxides in the exhaust gas of the engine 14, and exhaust gas purification A reducing agent tank 174 for containing the reducing agent supplied to the device 74 and a grain tank 7 for carrying harvested grains are provided. The grain tank 7 includes a reducing agent tank recess 254 in which the reducing agent tank 174 is mounted in the middle of the side surface.

  The combine is configured such that the grain tank 7 is rotatable to the outside of the traveling machine body 1, and a reducing agent tank recess 254 is provided in the vicinity of the pivot point of the grain tank 7. The traveling direction of the traveling machine body 1 is the front-rear direction, the rotation fulcrum of the grain tank 7 is provided at the rear of the grain tank 7, and the grain tank 7 can be rotated so that the front of the grain tank 7 opens outward from the machine. Yes. The reducing agent tank recess 254 is provided on the side surface of the grain tank 7 close to the support member.

The engine 14 is disposed on the front side of the grain tank 7, and the purification device support frame 251 that is erected from the traveling machine body 1 below the purification device installation recess 7 a in which the front side of the grain tank 7 is cut out. The exhaust gas purification device 74 is installed on the purification device support frame 251. The reducing agent tank recess 254 is formed by cutting out the rear side of the grain tank 7, and the reducing agent tank 174 is installed at a position on the outer side of the traveling machine body with respect to the rotation fulcrum. Reducing agent pipes 179 and 180 connecting the reducing agent tank 174 and the exhaust gas purification device 74 are provided.
Arranged along the grain tank 7.

  The reducing agent pipes 179 and 180 are guided from the reducing agent tank 174 to the traveling machine body center side with respect to the rotation fulcrum, led to the front of the running machine body 1 through the lower part of the grain tank 7, and along the purification device support frame 251. The exhaust gas purification device 74 is then led. A reducing agent water supply device 175 for supplying the reducing agent to the exhaust gas purification device 74 is installed in the middle of the reducing agent pipes 177, 179 and 180. The reducing agent water supply device 175 is fixed to a supply device support 185 provided on the purification device support frame 251.

  In the above combine, the grain tank 7 includes the reducing agent tank recess 254 in which the reducing agent tank 174 is disposed, so that the space for arranging the reducing agent tank 174 can be ensured without increasing the outer dimensions of the combine. The grain tank 7 is configured to be rotatable on the outer side of the traveling machine body 1, and the reducing agent tank recess 254 is located on the side surface of the grain tank 7 near the pivot point of the grain tank 7. If provided, the bending of the grain tank 7 during the rotation of the reducing agent pipes 179 and 180 connected to the reducing agent tank 174 can be reduced.

  The reducing agent tank recess 254 is provided at a position on the outer side of the traveling machine body relative to the rotation fulcrum, and the reducing agent pipes 179 and 180 connected to the reducing agent tank 174 are rotated from the reducing agent tank 174 to the grain tank 7. If guided toward the center side of the traveling machine body 1 from the fulcrum, the reducing agent pipes 179 and 180 can be prevented from hindering the rotation of the grain tank 7. Further, if the reducing agent pipes 179 and 180 are guided to the exhaust gas purification device 74 side through the lower part of the grain tank 7, the reducing agent pipes 179 and 180 prevent the grain tank 7 from rotating. Can be prevented.

  Further, the traveling direction of the traveling machine body 1 is set to the front-rear direction, the engine 14 is disposed on the front side of the grain tank 7, and the reducing agent tank recess 254 is provided on the rear side of the grain tank 7. For example, the reducing agent tank 174 can be prevented from being affected by the heat from the engine 14.

  In addition, the structure of each part in this invention is not limited to embodiment of illustration, A various change is possible in the range which does not deviate from the meaning of this invention.

DESCRIPTION OF SYMBOLS 1 Traveling machine body 5 Threshing apparatus 7 Grain tank 8a Vertical take-out conveyor (support member)
14 Engine 174 Urea water tank (reducing agent tank)
179 Urea water supply pipe (reducing agent pipe)
180 Urea water return pipe (reducing agent pipe)
229 Second case (exhaust gas purification case)
254 Recess 254a Bottom of recess

Claims (6)

An engine that is a power source mounted on the traveling machine body, an exhaust gas purification device that removes nitrogen oxides in the exhaust gas of the engine, and a reducing agent tank that contains a reducing agent supplied to the exhaust gas purification device; In a combine with a grain tank for carrying harvested grain,
The said grain tank is provided with the recessed part for reducing agent tanks in which the said reducing agent tank is mounted in the side surface middle part.   2. The combine according to claim 1, wherein the grain tank is configured to be rotatable to the outside of the traveling machine body, and the reducing agent tank recess is provided in the vicinity of a rotation fulcrum of the grain tank. The traveling direction of the traveling machine body is the front-rear direction, and the rotation fulcrum of the grain tank is provided at the rear of the grain tank so that the grain tank can be rotated so that the front of the grain tank is opened outwardly. And
3. The combine according to claim 2, wherein the reducing agent tank recess is provided on a side surface of the grain tank close to the pivot point. The engine is disposed on the front side of the grain tank, and a purification device support frame is provided on the lower side of the purification device installation recess formed by cutting out the front side of the grain tank in the machine. The exhaust gas purification device is installed on the purification device support frame,
The reducing agent tank recess is formed by notching the rear side of the grain tank, and the reducing agent tank is installed at a position outside the traveling machine body with respect to the rotation fulcrum.
The combine according to claim 3, wherein a reducing agent pipe connecting the reducing agent tank and the exhaust gas purifying device is disposed along the grain tank.   The reducing agent pipe is led from the reducing agent tank to the traveling machine center side from the rotation fulcrum, led under the grain tank to the front of the running machine body, and along the purification device supporting frame. The combine according to claim 4, wherein the combine is guided to an exhaust gas purification device.   A reducing agent water supply device for supplying the reducing agent to the exhaust gas purification device is installed in the middle of the reducing agent pipe, and the reducing agent water supply device is provided in the purification device support frame. The combine according to claim 5, wherein the combine is fixed to a support.

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