KR102135519B1 - combine - Google Patents

Abstract

The combine includes an engine as a power source mounted on the traveling gas, an exhaust gas purification case for removing nitrogen oxides from the engine's exhaust gas, an urea water tank for receiving urea water supplied to the exhaust gas purification case, and a grain for harvesting grain It is equipped with a tank. The grain tank has a recess in which the urea water tank is arranged.

Description

combine

The present invention relates to a combine such as a combine for harvesting grains placed in a package and collecting grains for feed or a feed combine for harvesting grains for feed as feed and more specifically, a diesel engine, etc. The present invention relates to a combine with an exhaust gas purifying device for removing particulate matter (ie, particles) contained in exhaust gas or nitrogen oxide (NOx) contained in exhaust gas.

Conventionally, as an exhaust gas purification device (exhaust gas post-processing device) in the exhaust path of a diesel engine, a case in which a diesel particulate filter is provided (hereinafter referred to as a DPF case) and a case in which a selective reduction catalyst is provided (hereinafter referred to as “a”) , Called the SCR case), introducing exhaust gas to the DPF case and the SCR case, and purifying the exhaust gas discharged from the diesel engine is known (for example, see Patent Documents 1 to 3).

Japanese Patent Publication 2009-74420 Japanese Patent Publication 2012-21505 Japanese Patent Publication 2012-177233

In the case of removing nitrogen oxides in exhaust gas using the selective catalytic reduction (SCR) method, the supply of a reducing agent (for example, urea) is required. Therefore, when the SCR denitration device is mounted on the combine, not only the SCR case but also the installation space of the reducing agent tank containing the reducing agent is required.

Therefore, the present invention is to provide a combine that has been improved by examining these phenomena.

In order to achieve the above object, the combine of the present invention includes an engine that is a power source mounted on a traveling gas, an exhaust gas purification device for removing nitrogen oxides from the exhaust gas of the engine, and a reducing agent supplied to the exhaust gas purification device. In the combine with the reducing agent tank accommodated and the grain tank which carries harvested grains, the said grain tank is equipped with the recess for the reducing agent tank in which the said reducing agent tank is mounted in the side center part.

In the combine of the present invention, the grain tank is configured to be rotatable outside the traveling gas, and the recess for the reducing agent tank may be formed near the rotation point of the grain tank.

In addition, in the combine of the present invention, for example, the traveling direction of the traveling gas is set in the front-rear direction, the rotation point of the grain tank is installed at the rear of the grain tank, and the front of the grain tank is opened to the outer side. The grain tank can be rotated, and the recess for the reducing agent tank may be provided on a side of the grain tank close to the rotation point.

In addition, in the combine of the present invention, the engine is disposed on the front side of the grain tank, and the purifying device installed upright from the traveling gas is located below the recess for installing the purifying device which notches the front side of the cabin of the grain tank. A support frame is installed, and the exhaust gas purifying device is installed on the purifying device support frame, while the concave portion for the reducing agent tank is formed by notching the rear side of the grain tank, and outside the traveling gas than the pivot point. The reducing agent tank is installed at the position of, and the reducing agent pipe connecting the reducing agent tank and the exhaust gas purification device may be disposed along the grain tank.

In addition, in the combine of the present invention, the reducing agent piping is guided from the reducing agent tank to the center of the traveling gas from the rotation point, passes below the grain tank and is guided to the front of the traveling gas, and supports the purifying device support frame. Accordingly, the exhaust gas purification device may be delivered.

In addition, in the combine of the present invention, a reducing agent water supply device for supplying the reducing agent to the exhaust gas purification device is provided in the middle of the reducing agent piping, and the reducing agent water supply device is for a supply device installed in the frame for supporting the purification device. It may be fixed to the support.

However, when the nitrogen oxidizing material in the exhaust gas is removed using the selective catalytic reduction (SCR) method, it is necessary to supply a reducing agent (for example, urea). Therefore, when the SCR denitrification device is mounted on the combine, it is necessary to mount the reducing agent tank containing the reducing agent as well as the SCR case, and manage the remaining amount of the reducing agent in the reducing agent tank.

Thus, in the combine of the present invention, the fuel tank for accommodating the fuel of the engine and the fuel remaining amount display according to the remaining amount of fuel in the fuel tank and the remaining amount of the reducing agent according to the remaining amount of the reducing agent in the reducing agent tank are displayed adjacent to the display screen. A display portion may be provided.

In the combine of the present invention, since the grain tank is provided with a concave portion for the reducing agent tank in which the reducing agent tank is disposed, the arrangement space of the reducing agent tank can be secured without increasing the outer dimensions of the combine.

In addition, the grain tank is configured to be rotatable on the outside of the traveling gas with the support member as a pivot point, and the recess for the reducing agent tank is provided on the side near the pivot point among the side of the grain tank, the reducing agent tank With respect to the reducing agent piping connected to, the warpage during the rotation of the grain tank can be reduced.

In addition, the concave portion for the reducing agent tank is formed at a position outside the traveling gas than the rotation point, and the reducing agent piping connected to the reducing agent tank is guided from the reducing agent tank to the center of the traveling gas from the rotating point, and the reducing agent piping of the grain tank It can be prevented from disturbing the rotation.

In addition, when the reducing agent piping passes through the lower portion of the grain tank and is guided to the exhaust gas purification device side, the reducing agent piping can be prevented from interfering with the rotation of the grain tank.

In addition, if the engine is disposed on the front side of the grain tank with the traveling direction of the traveling gas in the front-rear direction, and the recess for the reducing agent tank is provided on the rear side of the grain tank, the reducing agent tank will influence the heat from the engine. You can avoid receiving it.

In addition, in the combine of the present invention, if the display unit for displaying the remaining fuel amount display and the remaining amount of reducing agent display adjacent to the display screen is provided, the remaining fuel and reducing agent remaining amount display by the use of the combine can be displayed adjacently. Can. Thereby, the operator can confirm the remaining amount of both the fuel and the reducing agent without moving the gaze. Therefore, the visibility of the operator is improved as compared with the case where the remaining amount display is displayed at a remote location.

1 is a left side view of a six-row cutting combine showing an embodiment of the present invention.
2 is a plan view of the same.
Fig. 3 is a right side view.
4 is a perspective view showing the positional relationship between the engine peripheral parts and the grain tank and thresher.
5 is a front view showing a configuration around the exhaust gas purification device.
6 is a rear perspective view of the exhaust gas purification device attachment portion.
7 is an enlarged explanatory view of FIG. 6.
8 is the same rear view.
9 is a perspective view showing the arrangement of an engine and an exhaust gas purification device.
10 is a perspective view showing a supporting structure of an exhaust gas purification device.
11 is a rear perspective view showing a supporting structure of an exhaust gas purification device.
12 is a perspective view showing a configuration around the exhaust gas purification device and the urea water supply device.
13 is a perspective view showing a configuration around the exhaust gas purification device attachment portion.
14 is a perspective view showing the arrangement of the piping.
15 is a rear perspective view showing the arrangement of the grain tank and the vertical take-off conveyor.
16 is a plan view showing a state in which the rear cover is opened.
17 is a rear view showing the arrangement of the urea water tank.
18 is a right side view showing the arrangement of the urea water tank.
19 is a plan view showing the rotation of the grain tank.
20 is an enlarged plan view showing rotation of the grain tank.
It is a top view which shows the recessed part of a grain tank in partial cross section.
22 is a schematic view for explaining the supply of urea water.
23 is a rear view showing a supply table and a urea water tank.
24 is a right side view showing a supply table and a urea water tank.
25 is an explanatory cross-sectional view of a top perspective view of a driving cabin.
26 is an explanatory view of an example of a display screen showing information during cutting work.
27 is an explanatory diagram of an example of a display screen.
28 is an explanatory diagram of another example of a display screen showing information during cutting work.
29 is an explanatory diagram of another example of a display screen showing information during non-working.
30 is a flow chart showing the control operation of the full water warning of the urea water tank.
31 is a flow chart showing the control operation of the remaining amount warning of the urea water tank.

<First Embodiment>

The first embodiment embodying the present invention will be described below with reference to Figs. 1 to 20. The overall structure of the combine of the embodiment in which the diesel engine is mounted will be described with reference to FIGS. 1 to 4. In addition, in the following description, the left side is only called the left side toward the advancing direction of the traveling body 1, and similarly, the right side is only called the right side toward the advancing direction.

As shown in Figs. 1 to 4, a travel body 1 supported by a pair of left and right travel crawlers 2 as travel parts is provided. On the front part of the traveling body 1, a six-row harvesting cutting device 3 for harvesting crops while harvesting the grain stem is lifted and adjusted around the cutting pivot axis 4a by a single-acting hydraulic cylinder 4 for lifting. It is mounted as possible. In the traveling gas 1, a threshing apparatus 5 having a feed chain 6 and a grain tank (grain tank) 7 storing grains drawn from the threshing apparatus 5 are transversely arranged. It is mounted. Furthermore, the threshing apparatus 5 is arrange|positioned on the left side of the traveling body 1, and the grain tank 7 is arrange|positioned on the right side of the traveling body 1.

In addition, a grain discharging conveyor 8 that is rotatable through a vertical take-out conveyor 8a is installed at a rear portion of the traveling gas 1, and the grain inside the grain tank 7 is a rice outlet of the grain discharging conveyor 8 It is configured to be discharged from (9) to the truck's pallet or container. A driving cabin 10 is provided on the right side of the cutting device 3 and on the front side of the grain tank 7. Cabin rotation point shaft (10a) is installed on the front lower portion of the driving cabin (10), and the front lower portion of the driving cabin (10) is pivotally supported on the driving body (1) through the cabin rotation point shaft (10a). , It is configured to move the driving cabin 10 toward the front side of the cabin so as to be movable, and to rotate the driving cabin 10 to the front side around the cabin pivot point axis 10a.

In the driving cabin 10, the steering wheel 11, the driving seat 12, the peripheral speed lever 15, the sub-shift lever 16, and the threshing clutch lever 17 for turning the threshing clutch on and off. Wow, the harvesting clutch lever 18 which turns on and off the harvesting clutch is arrange|positioned. The diesel engine 14 as a power source is disposed in the traveling body 1 below the driving seat 12. In addition, a step in which the operator boards, a steering column provided with a steering wheel 11, a lever column provided with each of the levers 15, 16, 17, 18, and the like are disposed in the driving cabin 10.

1, left and right track frames 21 are arranged on the lower surface side of the traveling body 1. The track frame 21 includes a driving 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 traveling crawler 2 A plurality of track rollers 24 for holding the ground side of the ground and a middle roller 25 for holding the non-ground side of the traveling crawler 2 are provided. The front side of the traveling crawler 2 is supported by the driving sprocket 22, the rear side of the traveling crawler 2 is supported by the tension roller 23, and the ground side of the traveling crawler 2 is supported by the track roller 24. And the non-ground side of the traveling crawler 2 by the intermediate roller 25.

1 and 2, the fuel tank 31 containing the fuel supplied to the engine 14 is disposed on the left rear portion of the traveling body 1, and from the outside of the left side of the threshing apparatus 5. The fuel tank 31 is configured to be replenishable with diesel fuel. That is, the fuel tank 31 is on the traveling body 1 and is installed at a position below the hung cutter 65 at the rear of the threshing apparatus 5 and the threshing apparatus 32 is installed at the threshing apparatus 5. ) It is installed on the left side to allow refueling from the outside of the cabin.

1 and 2, the cutting frame 51 connected to the cutting axis 3a of the cutting device 3 is connected to the cutting frame 51 of the cutting device 3 and cuts the bottom of the uncut cropped grain placed on the package. 52) is installed. In front of the harvesting frame 51, a device for raising the grains of 6 trillion for raising the uncut grains placed on the packaging is disposed. Between the grain raising device 53 and the front end portion (transfer starting end side) of the feed chain 6, an intermission conveying device 54 for conveying the harvested grains cut by the cutting blade device 52 is disposed. In addition, in the lower front of the grain raising device 53, a six trillion minute mulch body 55 for distributing uncultivated grain stems protrudes. It is configured so that the uncrowed grain stems placed on the package by the harvesting apparatus 3 are continuously cut while moving inside the package.

Next, the structure of the threshing apparatus 5 is demonstrated with reference to FIGS. 1 and 2. 1 and 2, the threshing device 5 includes a threshing separator 56 for grain threshing, a swinging sorting panel 57 and a tuyere fan 58 for sorting grains falling below the thrust 56 ), a processing chamber 59 for reprocessing threshing discharged out from the rear portion of the quick-acting 56, and a exhaust fan 60 for discharging dust in the rear portion of the rocking sorting panel 57. In addition, the grain stem conveyed by the grain stem conveying apparatus 54 from the harvesting apparatus 3 is inherited by the feed chain 6, carried into the threshing apparatus 5, and threshed in the rapid 56.

As shown in FIG. 1, the conveyor No. 1 for taking out the grains (1st) selected from the swinging sorting panel 57 and the 2nd objects such as grains with a diameter are withdrawn on the lower side of the swinging sorting panel 57. The second conveyor 62 is installed. The rocking sorting board 57 is configured such that the threshed grains accumulated from the water net 67 installed under the rapid driving 56 are rocked by the feed pan 68 and the chaff sieve 69 (specific gravity sorting). The grain that has fallen from the rocking sorting panel 57 is removed by the sorting air from the fan 58, and the dust in the grain is dropped on the conveyor 61. The grains drawn out from the conveyor No. 61 are brought into the grain tank 7 through the grain lifting conveyor 63 and collected in the grain tank 7.

In addition, as shown in FIG. 1, the rocking|fluctuation sorting board 57 is comprised so that the 2nd object, such as grain with a diameter diameter, may fall from the chaff sieve 69 to the 2nd conveyor 62 by the rocking screening. And a sorting fan 71 for sorting the second water falling downward from the chaff sieve 69 with the wind. The second water falling from the chaff sieve 69 is removed by the sorting wind from the sorting fan 71 and dust and straw debris in the grain fall to the second conveyor 62. The end portion of the second conveyor 62 is connected to the upper surface side of the feed pan 68 through the reduction conveyor 66, and is configured to return the second product to the upper surface side of the swing sorting panel 67 for re-selection.

On the other hand, as shown in Figs. 1 and 2, a straw discharge chain 64 and a discharge straw cutter 65 are arranged on the rear end side (transfer end side) of the feed chain 6. On the rear end side of the feed chain 6, the discharge straw (straw where the grain is detached) inherited from the straw discharge chain 64 is discharged to the rear of the traveling body 1 in a long state, or the rear of the threshing apparatus 5 It is configured to be shortly cut to a suitable length by the discharge straw cutter 65 installed in the portion and then discharged to the rear lower side of the traveling body 1.

Subsequently, the first case 75 (diesel particle filter, DPF) and the second case 229 (selective catalytic reduction, SCR) as the exhaust gas purification device 74 and the diesel engine with reference to Figs. (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 for removing nitrogen oxides from exhaust gas of the diesel engine 14.

4 to 9, the exhaust gas purification device 74 is provided with a first case 75 of continuous regeneration type that introduces 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 in the front-rear direction, and has an inlet-side case 76 and an outlet-side case 77. Inside the inlet case 76 and the outlet case 77, a diesel oxidation catalyst 79 such as platinum to generate nitrogen dioxide (NO ₂ ) and the collected particulate matter (PM) are continuously oxidized at a relatively low temperature. The somatic filter 80 of the honeycomb structure to be removed is arranged in series in the direction of movement of the exhaust gas (front to rear).

Further, as shown in Figs. 4 to 9, the purifying inlet pipe 81 as an exhaust gas inlet pipe is welded to the inlet case 76 and purified as an exhaust gas outlet pipe in the outlet case 77. Bolt one end side of the outlet pipe 82. One end side of the urea mixing pipe 239 (exhaust pipe), which will be described later, is fixed to the other end side of the purification outlet pipe 82 by flange fastening, 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 passed from the purification outlet pipe 82 to the urea mixing pipe 239. It is configured to be discharged. In addition, the inlet-side case 76 and the outlet-side case 77 are detachably fastened by a plurality of sets of thick plate-shaped intermediate flange bodies 84 and a plurality of bolts.

With the above configuration, nitrogen dioxide (NO ₂ ) produced by the oxidation action of the diesel oxidation catalyst 79 is supplied from the soot filter 80 from one end face (introducing end face). The 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 (NO ₂ ). In addition to the removal of particulate matter (PM) in the exhaust gas of the diesel engine 14, the content of carbon monoxide (CO) or hydrocarbon (HC) in the exhaust gas of the diesel engine 14 is reduced.

Subsequently, as shown in FIGS. 4 to 9, as the exhaust gas purifying device 74 for purifying the exhaust gas discharged from each cylinder of the diesel engine 14, nitrogen oxidation in the exhaust gas of the diesel engine 14 And a second case 229 as a selective catalytic reduction (SCR) system for removing material. 4 and 7, as in the first case 75, the second case 229 is formed in a long cylindrical shape extending in the front-rear direction, and the second case 229 is an urea selection catalyst The reduction SCR catalyst 232 and the oxidation catalyst 233 are built in, and are configured to reduce nitrogen oxides (NOx). An SCR inlet pipe 236 for introducing exhaust gas and an SCR outlet pipe 237 for discharging exhaust gas are provided at the upper and lower ends of the second case 229 (one end side and the other end side of the exhaust gas movement direction).

7 and 8, the SCR outlet pipe 237 is installed through the outlet pipe bracket 150 at the rear end of the second case 229, and the pipe support 151 is provided on the outlet pipe bracket 150. Through the urea mixing pipe 239 through the fastening and fixing the urea injection portion 240 of the rear end, the first case 75 through the urea mixing pipe (through the flange 152 for fastening bolts to the purification outlet pipe 82 of the rear end ( 239) The rear end element injection part 240 is detachably connected. Meanwhile, the SCR inlet pipe 236 is connected to the front end side of the urea mixing pipe 239, and the SCR inlet pipe 236 is connected to the purification outlet pipe 82 through the urea mixing pipe 239, and the first The exhaust gas of the case 75 is configured to be introduced into the second case 229. In addition, the urea water (reducing agent) of the urea water tank 174 (reducing agent tank), which will be described later, is supplied into the urea mixing tube 239, and is contained in the exhaust gas from the first case 75 to the second case 229. It is structured such that the water is hydrolyzed and mixed as ammonia. It is also possible to use other reducing agents such as anhydrous ammonia or ammonia water in place of urea water. The exhaust gas of the diesel engine 14 is purified in the first case 75 and the second case 229 and is discharged out of the tail pipe 83 to the outside.

6 to 8, the tail pipe 83 is supported on the upper surface side of the threshing apparatus 5. The pipe bracket 246 is bolted to the right side of the upper surface of the threshing apparatus 5, and the pipe bracket 246 is erected and installed on the upper surface of the threshing apparatus 5 (the threshing top frame of the upper right corner of the threshing machine case). , Bolt the lower side of the rear pipe support 248 to the upper side of the pipe bracket 246, fix the rear end side of the tail pipe 83 to the upper side of the rear pipe support 248, and the tail pipe 83 ) The exhaust gas outlet on the rear end side is opened toward the rear of the gas. 8, 10 and 11, a pipe bracket 247 is installed on the upper surface of the lower bracket 245 welded and fixed to the rear end of the frame 250 before and after the case support, which will be described later, and the pipe bracket ( Bolt the lower side of the front pipe support 249 to 247), fix the front end of the tail pipe 83 to the upper side of the front pipe support 249, and the tail pipe 83 to the SCR outlet pipe 237 ) Is connected so that the exhaust gas of the second case 229 is discharged from the tail pipe 83 by connecting the front end side.

With the above-described configuration, in the exhaust gas purification device 74, first, the carbon monoxide (CO) in the exhaust gas of the diesel engine 14 or the oxidation catalyst 79 in the DPF 75 and the soot filter 80 are used. Hydrocarbon (HC) is reduced. Subsequently, inside the urea mixing tube 239, the exhaust gas from the diesel engine 14 is mixed with the urea water from the urea injection unit 240, the SCR catalyst 232 in the second case 229, the oxidation catalyst By 233, nitrogen oxidizing material (NOx) in the exhaust gas in which urea water is mixed as ammonia 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 portion of the threshing apparatus 5. In addition, a gap is formed in the connection portion between the SCR outlet pipe 237 on the small diameter side and the tail pipe 83 on the large diameter side, and the outside air is sucked into the tail pipe 83 from the gap, from the SCR outlet pipe 237. It is configured such that the outside air is mixed with the exhaust gas of and the exhaust gas whose exhaust temperature has decreased is discharged from the tail pipe 83.

As shown in Figs. 3 to 5, the grain tank 7 has a recess 7a for purifying device installation in a notched shape on the front left side, and a recess for mounting a grain discharge conveyor by a groove shape in the front-rear direction on the upper left side. (7b), a concave portion (7c) for the grain conveyor installation by a shape in which a step is formed along the vertical direction in the center of the left side, and a urea water tank by a shape in which a corner portion outside the traveling body (1) on the rear side is notched. It is provided with a recess 254 for installation. A space is formed in the rear of the engine 14 in the recess 7a for installing a purification device in front of the grain tank 7, and an exhaust gas purification device 74 is disposed. In the recess 7b for installing the grain discharge conveyor on the upper surface of the grain tank 7, the grain discharge conveyor 8 having the leading end of the conveyor support 90 is accommodated along the recess 7b for installing the grain discharge conveyor. In addition, a grain conveyor 63 is disposed in the recess 7c for installing a grain conveyor on the left side of the grain tank 7, and a rice outlet at the top of the grain conveyor 63 is installed in the recess 7c for the grain conveyor installation. It is connected to the inlet. In addition, the urea water tank 174 to be described later is disposed in the recess 254 for installing the urea water tank at the outer corner of the traveling gas 1 on the rear side of the grain tank 7.

1 to 5, 15 and 16, the horizontal transfer conveyor 8b is disposed at the bottom of the grain tank 7 in the front-rear direction, and vertically drawn out at the rear end of the horizontal transfer conveyor 8b. The lower end (base end) side of the conveyor 8a is connected. In addition, the outer bottom plate 7d and the inner bottom plate 7e are installed at the bottom of the grain tank 7, and the outer bottom plate 7d and the inner bottom plate 7e are inclined toward the horizontal conveying conveyor 8b. , Grain inside the grain tank 7 is lowered in the direction of the horizontal transport conveyor (8b). The horizontal conveying conveyor 8b is extended along the front and rear of the bottom of the grain tank 7, and conveys grains flowing along the bottom plate of the grain tank 7 to the rear vertical take-off conveyor 8a.

The vertical take-off conveyor 8a is connected to the lower side succession case 8c installed at the rear end of the horizontal conveying conveyor 8b protruding from the rear end face of the grain tank 7, and along the rear end face of the grain tank 7 The tank 7 is extended upwardly. The grain discharging conveyor 8 is connected to the upper-side succession case 8d connected to the upper end of the vertical drawing-out conveyor 8a and the rear end, and is extended toward the front. Therefore, the grain conveyed from the horizontal transport conveyor 8b of the grain tank 7 is carried into the vertical take-off conveyor 8a through the lower-side inheritance case 8c. Then, in the vertical take-off conveyor 8a, when the grain is conveyed upward, it is carried into the grain discharging conveyor 8 through the upper side succession case 8d. In addition, in the grain discharging conveyor 8, the grain is conveyed to the front and discharged from the rice outlet 9.

The lower end (base end) side of the vertical take-off conveyor 8a is connected to the grain tank 7 through the lower side succession case 8c. In addition, the bottom of the inheritance case 8c on the lower side is fitted to the protrusion 40 provided on the traveling body 1, and the grain tank 7 to which the lower inheritance case 8c is fixed is attached to the traveling body 1 It is axially supported so that it can rotate. The vertical take-off conveyor 8a includes a lower barrel case 41 connected to the lower side inheritance case 8c and an upper barrel case 42 connected to the upper side inheritance case 8c, and the lower barrel case ( With respect to 41), the upper cylinder case 42 is rotatably connected.

The upper cylinder case 42 is provided with a turning gear 43 on the lower outer circumferential surface, and the turning gear 43 fits a gear (not shown) installed on the rotating shaft of the turning motor (actuator) 44. It has a configuration that can be rotated and rotated based on rotation from the turning motor 44. The upper barrel case 42 is gripped by a U-shaped support 45 having both ends connected to the rear side of the grain tank 7 and the lower portion is installed upright from the traveling body 1 It is held by a U-shaped support 47 connected to the top of one support frame 46. That is, the upper barrel case 42 is pivotally supported by the support tanks 45 and 47 fixed to the grain tank 7 and the support frame 46. Thereby, the upper cylinder case 42 is rotated by the turning motor 44, so that the grain discharge conveyor 8 rotates with respect to the grain tank 7 (vertical take-off conveyor 8a as a rotating shaft). .

The lower barrel case 41 has the lower (base) side fixed to the grain tank 7 through the lower side succession case 8c, while the upper side is fitted with the upper barrel case 42, and the upper barrel case ( 42) is rotatable with respect to the lower cylinder case 41. The turning motor 44 is loaded and fixed on the motor fixing bracket 48 installed on the side of the support 47, and is attached to the motor shaft end of the turning motor 44 protruding from the bottom surface of the motor fixing bracket 48. The gear 43 for turning of the upper cylinder case 42 is meshed with the installed gear. A U-shaped support body 49 for holding 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 side of the barrel case 41 is fixed to the grain tank 7, while the upper side is pivotally supported by the support 49 fixed to the support frame 46.

5, 7 and 8, a lock pin 161 and a lock arm 162 for fixing and supporting the grain tank 7 at a storage position of the traveling body 1 are provided, and the threshing apparatus 5 is provided. ), the lock pin 161 is fixed to the upper right side, and the lock arm 162 is attached to the left side of the front surface of the grain tank 7. The lock pin fixing frame 160 is provided on the right side of the upper surface of the threshing apparatus 5, and the lock pin 161 is fixed to the front end of the lock pin fixing frame 160. In addition, the lock release lever 164 is attached to the front of the grain tank 7, the lock release lever is connected to the lock arm 162 through the linkage rod 163, and the lock release lever operation is used to lock the lock release lever 164 from the lock pin 161. The lock arm 162 is configured to be detachable. The grain tank 7 is configured to be able to rotate around the axial center line of the vertical take-off conveyor 8a by the operation of removing the lock arm 162 of the lock release lever.

On the lower edge of the front end surface of the grain tank 7, a wheel 167 sliding on the traveling gas 1 is supported, and the wheel 167 moves the phase of the traveling gas 1 in the left and right directions, thereby the grain tank 7 ) While supporting the front side, the grain tank 7 can be opened and closed. In addition, a rail 168 that receives the wheel 167 of the grain tank 7 is provided in the right side (outer side) of the traveling body 1. The rail 168 has a shape that is bent downward toward the outside (right), and when the grain tank 7 opened up to the outside (right) is closed, the grain tank 7 on the traveling body 1 The wheel 167 is guided to the upper surface of the traveling body 1 so as to be mounted. In addition, 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) from the wheel 167, and the outer side (right) end portion is bent downward in a shape according to the bending of the rail 168. Therefore, when the grain tank 7 is closed, the installation position of the grain tank 7 is fixed by contacting the curved portion of the positioning member 169 with the curved portion of the rail 168.

The vertical take-off conveyor 8a is fixed to the grain tank 7 so as to stand upright along the rear end surface of the grain tank 7 and is rotatably supported by the projections 40 and supports 45, 47, and 49. . In addition, the front end surface of the grain tank 7 is supported by a wheel 167 sliding on the traveling gas 1. Therefore, the grain tank 7 is rotatable toward the outside of the vertical take-off conveyor 8a around the axial center line, and the right side of the threshing apparatus 5 and the rear side of the engine room 97 described later are configured to be openable. In addition, a rear cover 30 covering the periphery of the vertical take-off conveyor 8a is provided behind the grain tank 7 so as to be opened and closed. In addition, the bottom cover body 165 is detachably installed on the outer surface of the outer bottom plate 7d of the grain tank 7.

Subsequently, as shown in FIGS. 9 to 11, the engine room frame 91 is erected and installed on the traveling body 1, and the rear side of the diesel engine 14 mounted on the traveling body 1 upper side is an engine. Surrounded by a room frame (91). The engine room frame 91 is provided to the left post body 92 of each pipe shape disposed on the left, the right post body 93 of an inverted U shape disposed to the right, and the left and right post bodies 92, 93a. It has a lateral frame 94 in the shape of a square pipe with both ends fixed integrally. The transverse frame 94 is fixed by being connected to the vertical frame 93a in the shape of an angle pipe having one end connected to the upper end of the left strut body 92 and the other end fixed to the upper portion of the right strut body 93. In addition, as shown in FIG. 1, the conveyor support 90 is provided on the upper end side of the left support body 92, and the grain discharge conveyor 8 is supported in the storage position through the conveyor support 90.

Further, a rubber pressure contact leg (not shown) provided on the rear part of the bottom surface of the driving cabin 10 is pressed on the upper surface of the left and right pedestals 96 of the lateral frame 94 from the upper side to press the bottom of the driving cabin 10. The legs are brought into contact with each other, and the rear portion of the driving cabin 10 is supported on each pedestal 96 of the transverse frame 94 in a vertically downward direction. The diesel engine 14 is provided inside the engine room 97 formed from the bottom surface of the driving cabin 10 and the engine room frame 91.

In addition, an air cleaner 123 for supplying the outside air to the diesel engine 14 and a pre-cleaner 124 for introducing the outside air into the air cleaner 123 are provided. In addition to arranging the air cleaner 123 on the right side of the exhaust gas purifying device 74 among the upper surfaces of the engine room 97, the free cleaner 124 is disposed on the front right side of the grain tank 7 and above the engine room 97. Then, the air cleaner 123 is connected to the pre-cleaner 124 through the air supply pipe 125. It is configured to introduce combustion air from the pre-cleaner 124 to the compressor case 118a of the turbocharger 118 of the diesel engine 14 through the air cleaner 123. The air cleaner 123 is located on the front right side of the exhaust gas purification device 74 by being fixed on the rear right side of the transverse frame 94 of the engine room frame 91.

4 and 9, a supercharger 118 for forcibly blowing 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 front side of the diesel engine 14, and a compressor case 118a having a blower foil is installed on the right side, while a turbine case 118b having a turbine foil on the left side is installed. Doing. Then, the intake air introduction side provided at the right end of the compressor case 118a communicates with the intake discharge side of the air cleaner 123 through the air supply pipe 120. On the other hand, the exhaust gas inlet (DPF inlet pipe) of the exhaust gas purifying device 74 which is a post-processing device through the corrugated box-shaped exhaust inlet pipe 98 in which the exhaust outlet pipe 99 installed at the left end of the turbine case 118b is bendable (81)) is connected to the exhaust connection pipe (119).

3, 4 and 9, the exhaust gas purifying device 74 including the first case 75 and the second case 229, the air cleaner 123 and the pre-cleaner 124 are On the rear surface of the engine room frame 91, the engine 14 is divided left and right. That is, with respect to the supercharger 118 on the front of the engine 14, an air cleaner 123 and a pre-cleaner 124 serving as an intake system are disposed on the compressor case 118a on the right, while the turbine case 118b on the left. On the side of ), an exhaust gas purification device 74 serving as an exhaust system is disposed. As described above, since the intake path and the exhaust path of the engine 14 provided with the supercharger 118 are divided left and right, the intake path and the exhaust path can be configured as short paths, and high-temperature exhaust gas passes. The intake path can be spaced apart from the exhaust path.

Next, the attachment structure and the supporting structure of the exhaust gas purification device 74 will be described with reference to FIGS. 4 to 13. As a holding body for arranging the first case 75 and the second case 229 in parallel, a pair of front case fixing bodies 100 and a rear case fixing body 101 and four fastening bands 85 are provided. . The first case 75 is fixed by the front and rear fastening bands 85 to the left side of the front case fixing body 100 and the rear case fixing body 101, and the front case fixing body 100 and the rear side are fixed. The second case 229 is fixed to the right side loading part of the case fixing body 101 by fastening bands 85 before and after. Each of the two fastening bands 85 on the upper surface side of the first case 75 and the second case 229 is respectively mounted in a semi-wound shape, and each fastening band 85 is attached to each of the case fixtures 100 and 101 ), the lower side is bolted. Thereby, the 1st case 75 and the 2nd case 229 of the cylindrical shape extended in the front-back direction are each horizontally arrange|positioned.

At the left and right ends of the front case fixing body 100 and the rear case fixing body 101, a pair of L-shaped sheet metal right supporting frame bodies 102 and left supporting frame bodies 103 are attached to the left and right ends (supporting posture). The bolts are adjustable to be fastened, and the case fixing bodies 100 and 101 and the supporting frame bodies 102 and 103 are connected to a square frame shape, and the first case 75 and the second through the fastening band 85 are connected to them. The case 229 is fixed, and the exhaust gas purification device 74 as an exhaust purification unit is configured. In addition, the inner diameter dimension of the bolt through hole of the support frame bodies 102 and 103 is formed larger than that of the bolts connecting the case fixing bodies 100 and 101 and the support frame bodies 102 and 103, and the support frame When the bolts are inserted into the bolt through holes of the sieve 102, 103, and the case fixing bodies 100, 101 and the supporting frame bodies 102, 103 are fixed, the case fixing bodies 100, While supporting the connection posture of the support frame bodies 102 and 103 to 101 in a predetermined posture, screws are attached to the case fixtures 100 and 101 and the support frame bodies 102 are attached to the case fixtures 100 and 101. , 103).

The exhaust gas purifying device 74 is supported on the traveling gas 1 by fixing the right support frame body 102 to the case front and back frame 250 and the case support bracket 253. The frame 250 before and after the case supports the right support frame body 102 through the brackets 250a and 250b. The case support bracket 253 supports the left support frame body 103.

4 and 8 to 12, the case support front and rear frame 250 is disposed on the right side of the threshing apparatus 5 so that the longitudinal direction is approximately the front and rear direction, and the front left side of the grain tank 7 ( It is arrange|positioned under the recessed part 7a for purification apparatus installation provided in the threshing apparatus 5 side). The front end portion of the case support front and rear frame 250 is disposed on the left side of the rear end portion, and the longitudinal direction of the case support front and rear frame 250 is inclined with respect to the front and rear direction.

In addition, the frame 250 before and after the case is disposed so that its longitudinal direction is approximately horizontal. The front end portion of the case 250 before and after the case is connected to the middle portion of the center of the horizontal frame 94 in the longitudinal direction (left and right direction). The frames 94 and 250 are connected by a case in which the case support bracket 94a installed from the upper surface of the frame 94 over the rear surface and the shear bracket 250d installed on the front surface of the frame 251 are bolted.

In addition, the rear end side of the frame 250 before and after the case is supported by the case support strut frame 251 installed upright on the traveling body 1. The frames 250 and 251 have a lower bracket 250c installed apart from the rear end surface of the frame 250 on the lower surface of the middle part of the rear end side of the upper end bracket 251a installed on the upper surface of the frame 251. It is connected by bolting. Further, the lower bracket 250a protruding to the right side of the middle portion of the frame 250 before and after the case support is welded and fixed from the front side of the lower surface bracket 250c.

The lower bracket 250a is disposed rearward (between the central position and the lower surface bracket 250c) than the center position in the longitudinal direction of the frame 250. The upper bracket 250b is welded and fixed to the upper surface of the lower bracket 250a. The lower surface of the right supporting frame body 102 is fixed to the upper surface of the upper bracket 250b so as to be detachable by a bolt. The height position of the upper surface of the upper bracket 250b is higher than that of the upper surface of the horizontal frame 94 and the upper surface of the frame 250 before and after the case support.

4, 5, and 8, the left support frame body 103 is supported on the upper surface side of the threshing apparatus 5. The case support bracket 253 is bolted to the right side of the upper surface of the threshing apparatus 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 by inserting the case of the threshing apparatus 5 into the case support reinforcement member 228 attached to the threshing right upper frame 227 of the threshing apparatus 5. The case support reinforcing member 228 is provided with a plurality of ribs vertically installed with respect to the contact surface with the case of the threshing apparatus 5 at the position where the case support bracket 253 is attached. In addition, the case support bracket 253 is a threshing device (5) so that the contact surface of the bracket 253 and the left support frame body 103 and the contact surface of the upper bracket 250b and the right support frame body 102 are generally at the same height. ) It is attached to the top surface. 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 7a of the grain tank 7.

4, 7 and 9, the case support front and rear frame 250 is transverse from the case support strut frame 251 side at a position between the air cleaner 123 and the purification inlet pipe 81. It extends toward the frame 94. As a result, it is possible not only to secure a space for connecting the corrugated box-shaped exhaust inlet pipe 98 disposed under the transverse frame 94 to the purification inlet pipe 81 of the first case 75, but also air Buffering with the cleaner 123 can also be prevented. In addition, since the case 250 is disposed before and after the case support at a position between the intake path including the air cleaner 123 and the exhaust path connected to the first case 75, the air cleaner 123 The influence of heat discharge from the exhaust path can be reduced.

As shown in FIGS. 4 and 5, the first case 75 and the second case (in the recess 7a) of the grain tank 7 provided on the surface facing the engine room 97 of the grain tank 7 ( An exhaust gas purification device 74 having 229) is disposed. This allows the exhaust gas purification device 74 to be disposed at a position close to the engine 14 between the grain tank 7 and the engine room 97, while the exhaust gas purification device 74 becomes hot. To prevent the worker from contacting. Further, since the arrangement from the engine room 97 can be guided to the exhaust gas purification device 74, the exhaust gas purification device 74 can be disposed under a high temperature environment required for purification of the exhaust gas, , High purification effect can be maintained in the exhaust gas purification device 74.

Moreover, the 1st case 75 and the 2nd case 229 of the exhaust gas purification apparatus 74 are juxtaposed to the left and right with the longitudinal direction as the front-rear direction. And the 1st case 75 is arrange|positioned with respect to the 2nd case 229 on the threshing apparatus 5 side. Thereby, the 1st case 75 can be arrange|positioned at the position close to the exhaust port of the engine 14, and the exhaust path from the engine 14 to the 1st case 75 is comprised in a short path, and is 1st. The regeneration process in the case 75 can be maintained at high performance. In addition, since the second case 229 and the urea mixing tube 239 are covered with the grain tank 7, the second case 229 and the urea mixing tube 239 are placed in the grain tank at the rear of the engine room 97 ( It can be disposed under a high-temperature environment surrounded by 7) to prevent freezing of urea water, and at the same time, to maintain a high purification capacity of the second case 229.

Moreover, the 1st case 75 and the 2nd case 229 are horizontally supported from the threshing apparatus 5 over the recessed part 7a of the grain tank 7, and are arrange|positioned in parallel. By horizontally supporting the first case 75 and the second case 229, the exhaust gas purification device 74 can be arranged compactly at a position higher than the engine 14, and hot exhaust from the engine 14 A structure in which gas is easily guided to the exhaust gas purification device 74 can be realized. In addition, 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. have.

In addition, 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 includes the first case 75 and the second case. It is arranged parallel to the longitudinal direction of (229). Thereby, the 1st case 75, the 2nd case 229, and the urea mixing tube 239 are comprised in an integral unit structure, and purify exhaust gas inside the recess 7a in front of the grain tank 7 The device 74 can be installed compactly. Therefore, while being able to easily secure the installation space of the exhaust gas purification device 74, the concave portion 7a of the grain tank 7 is narrowly configured, and the grain storage capacity of the grain tank 7 is secured. can do.

Moreover, as shown in FIG. 13, the purification apparatus cover body 261 which becomes a heat shield member is provided in the right side part of the upper surface of the threshing apparatus 5. The purification device cover body 261 is bolted to the lock pin fixing frame 160 on the front side, and fixed to the rod-shaped member installed on the upper right side of the casing of the threshing device 5, thereby exhaust gas purification device 74 ). The left side (side of threshing apparatus 5) of the exhaust gas purification apparatus 74 is covered by the purification apparatus cover body 261. Thereby, the exhaust gas purifying device 74 can be arrange|positioned under a high temperature environment, and the influence by the heat radiation from the exhaust gas purifying device 74 to peripheral components can be reduced.

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

As shown in FIGS. 14-18, the urea water tank 174 has a longitudinal length shape and is disposed in the recess 254 provided in the grain tank 7. 17 shows a state in which the bottom cover body 165 and the right cover body 166 constituting the right side of the grain tank 7 are separated from the upper side of the bottom cover body 165, and grains in the grain tank 7 The receiving portion 260 is visible. The concave portion 254 is provided in a corner portion outside the traveling body 1 on the rear side of the grain tank 7. The concave portion 254 has a bottom portion 254a on which the urea water tank 174 is mounted. In addition, the tank mounting table 255 is disposed at the bottom 254a of the concave portion 254. The urea water tank 174 is mounted on the tank mount 255. Since the grain tank 7 is provided with the recessed part 254 in which the urea water tank 174 is arranged, the arrangement space of the urea water tank 174 is secured without increasing the outer dimension of the combine. In addition, since the concave portion 254 has a bottom portion 254a on which the urea water tank 174 is mounted, a member for mounting the urea water tank 174 is not required. Therefore, the cost can be reduced compared to the case where the member for mounting the urea water tank 174 is separately installed. Further, since the recessed portion 254 is provided on the rear side of the grain tank 7, the urea water tank 174 is not affected by 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 arranged and attached in the vertical direction. The material of the band 256 is, for example, a material having elasticity, and here is rubber. An annular bracket 257 is provided at both ends of each band 256, respectively. In addition, the system is located in two places on the left side than the concave portion 254 on the rear surface of the grain tank 7 and two places on the inner surface 254b on the front side of the traveling body 1 of the concave portion 254. Two hook brackets 258 are welded and fixed. The band 256 is attached to the grain tank 7 by attaching an annular bracket 257 to the hook bracket 258. In addition, a fall prevention stay 259 is provided in the grain tank 7 to prevent the fall of the urea water tank 174. One end of the fall prevention stay 259 is fixed to the rear side 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 the inner surface of the recess 254 It is fixed to (254b).

17, 18 and 22, the urea water tank sensor part 271 is detachably attached to the upper surface opening of the urea water tank 174. The urea water tank sensor part 271 includes a sensor part main body 272 and a urea water supply pipe 179 (reducing agent piping), and an urea water return pipe that are encapsulated in the sensor part body 272 functioning as a lid of the opening 5 ( 180) (reduction pipe), cooling water transfer pipe 273, cooling water return pipe 274, temperature sensor 183, liquid level sensor 184, urea water quality sensor 186 (for example, concentration sensor) and sensor And a control unit 187. 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 transfer pipe 273 and the cooling water return pipe 274 are connected in the urea water tank 174. The cooling of the urea water is prevented by sending the engine cooling water heated by the engine 14 from the cooling water transfer pipe 273 to the cooling water return pipe 274 to pass through the urea water tank 174.

22, the urea water supply device 175 includes an urea water pump 171 for feeding urea water in the urea water tank 174 and an electric motor for supplying urea water for driving the urea water pump 171 ( 172). The urea water supply pipe 179 and the urea water return pipe 180 are connected between the urea water tank 174 and the urea water supply device 175. In addition, an engine controller 181 for performing fuel injection control or the like of the diesel engine 14 and an urea injection controller 182 for controlling the operation of the urea water supply device 175 or the urea water injection valve 178 are provided. Doing.

12 and 14, the urea water supply device 175 is welded to the left side and the front side of the case support strut frame 251 supporting the exhaust gas purification device 74 (second case 229). It is fixed by being bolted to the fixed pump support (support for supply device) 185. The urea water supply device 175 is attached to the upper left side of the pump support 185. The urea water supply device 175 and the pump support 185 are arranged 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 of the controller support 189 attached to the left side of the case support strut frame 251. The controller support 189 is bolted to the controller bracket 251b welded to the left side surface of the case support strut frame 251.

14 and 22, an urea water injection pipe 177 for connecting 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 inside the urea mixing tube 239 do. The number of urea supplied to the urea mixing tube 239 is configured to be mixed as ammonia in exhaust gas from the first case 75 to the second case 229. Further, a cooling water transfer pipe 275 and a cooling water return pipe 276 are connected between the urea water injection valve 178 and the engine 14. The end portions of the cooling water transfer pipe 275 and the cooling water return pipe 276 on the urea water injection valve 178 side are respectively connected to a pipe connection provided in the urea water injection valve 178. Further, the cooling water transfer pipe 275 and the cooling water return pipe 276 are connected in the urea water injection valve 178. The engine cooling water heated by the engine 14 is sent from the cooling water transfer pipe 275 through the urea water injection valve 178 to the cooling water return pipe 276, thereby reducing the urea water in the urea water injection valve 178. Freeze is prevented.

As shown in FIG. 14, one end of the urea water injection pipe 177 is connected to a pipe connection portion provided at the rear portion of the urea water injection valve 178, and after being guided to the left side from the connection position, it is guided downward. Also, it is led to the urea water supply device 175 through the purification outlet pipe 82, the urea injection portion 249, and the second case 229. In addition, the cooling water transfer pipe 275 and the cooling water return pipe 276 roughly follow the urea water injection pipe 177 from the connection portion with the urea water injection valve 178 and are led downwardly of the second case 229, and It is guided forward along the frame 250 through the vicinity of the lower side of the center portion of the frame 250 in the longitudinal direction of the case support front and rear, and is guided downward from the midway portion of the front side of the frame 250 to the engine 14 have. 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.

Further, 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. In addition, the temperature sensor 183, the upstream NOx sensor 188, and the downstream NOx sensor 189 are also electrically connected to the urea injection controller 182. 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 injection of urea water according to the detection signals of the temperature sensors 183 and NOx sensors 188 and 189.

Further, the engine controller 181 and the urea injection controller 182 are electrically connected. In this way, the urea water is configured to be supplied to the urea mixing tube 239 at an appropriate time depending on the operation situation of the diesel engine 14 and the like. In addition, the supply of engine cooling water to the cooling water transfer pipe 273 and the cooling water return pipe 274 is performed by opening and closing the valve 277 installed in the cooling water transfer pipe 273 by the control of the urea water injection controller 182. Is done. In this way, the urea water in the urea water tank 174 is configured to be heated at an appropriate time in accordance with the urea water temperature situation in the urea water tank 174.

As shown in FIG. 14, the urea water supply pipe 179 and the urea water return pipe 180 are once introduced upwards from the urea water supply device 175 and then bent toward the rear side to rear the rear side of the pump support 185. It is guided to the rear side of the case support strut frame 251, and is also guided to the side of the traveling body 1 along the rear side of the case support strut frame 251, and passes through the lower portion of the grain tank 7 so that the urea water tank 174 ) Side. In addition, the cooling water transfer pipes 273 and 275 and the cooling water return pipes 274 and 276 are guided from the engine 14 to the front midway portion of the lower surface of the frame 250 before and after the case support, and also along the frame 250 to the rear. It is guided to the rear side of the case support strut frame 251. In addition, the cooling water transfer pipe 273 and the cooling water return pipe 274 along the urea water supply pipe 179 and the urea water return pipe 180, along the rear side of the case support strut frame 251, to the traveling body 1 side. It is delivered and passes under the grain tank 7 and is delivered to the urea water tank 174 side. In addition, the cooling water transfer pipe 275 and the cooling water return pipe 276 are led to the urea water injection valve 178 from the rear side of the case support strut frame 251. With the above piping configuration, a compact piping configuration can be realized. In addition, the mountability of the urea water supply device 175 or piping is improved. In addition, the pipes (179, 180, 273 to 276) are the traveling body (1), the rear of the grain tank (7), the case support frame before and after the frame 250, the case support strut frame 251, etc. Clamp for piping (not shown Position).

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, after the urea water injection is stopped, the urea water supply device 175 ) And the difference between the urea water injection valve 178 has an effect of flowing urea water remaining in the urea water injection valve 178 or in the urea water injection pipe 177 to the urea water supply device 175 side.

Subsequently, as shown in FIGS. 15 to 20, the grain tank 7 uses the vertical take-off conveyor 8a (support member) provided on the rear side of the travel gas 1 of the grain tank 7 as a rotation point as a travel gas ( 1) It is installed to be able to rotate outside. In the grain tank 7, the recess 254 is provided on the side (rear) of the grain tank 7 close to the vertical take-off conveyor 8a (rotation point). Thereby, the urea water tank 174 can be arrange|positioned in the vicinity of a rotation point. In addition, with respect to the urea water supply pipe 179, the urea water return pipe 180, the cooling water transfer pipe 273, and the cooling water return pipe 274, the warpage during rotation of the grain tank 7 can be reduced. . In addition, by rotating the grain tank 7 to the outside of the traveling gas 1, the right side of the threshing apparatus 5 and the rear side of the engine room 97 can be opened, so that the operator can supply the exhaust gas purification apparatus 74 or urea water. Various operations such as maintenance of (175) are simply performed.

15 to 20, the concave portion 254 is formed at a position outside the traveling body 1 rather than the vertical take-off conveyor 8a (rotation point). In addition, the urea water supply pipe 179 connected to the urea water tank 174, the urea water return pipe 180, the cooling water transfer pipe 273 and the cooling water return pipe 274, opposite to the rear side of the grain tank 7 In the left-right direction of the traveling gas 1, the part to be said is led from the urea water tank 174 to the center side of the traveling gas 1 rather than the vertical take-off conveyor 8a. Thereby, it is possible to prevent the tubes 179, 180, 274 and 275 from interfering with the rotation of the grain tank 7. Further, the pipes 179, 180, 274, and 275 are passed from the position of the center of the traveling gas 1 to the exhaust gas purification apparatus 74 side from the position of the center of the traveling gas 1 rather than the vertical take-off conveyor 8a. have. This configuration also prevents the tubes 179, 180, 274 and 275 from interfering with the rotation of the grain tank 7.

2, 3, 15 and 19-21, the rear cover 30 is provided in each part of the grain tank 7 outside the traveling body 1, but also on the rear part side. The rear cover 30 is supported by the grain tank 7 so as to be able to rotate outside the traveling body 1 through two hinges 192 attached to the corner portion of the grain tank 7. With the rear cover 30 closed, the rear cover 30 covers the urea water tank 174. This can reduce the exposure of the urea water tank 174 to direct sunlight.

In addition, the water supply port 174a of the urea water tank 174 is not visible from the side of the combined gas when the rear cover 30 is closed. That is, when performing the water supply operation to the urea water tank 174, the operation of opening the rear cover 30 is required. On the other hand, as described above, the oil supply port 32 of the fuel tank 31 is extended to the left side of the threshing apparatus 5 and is exposed outside. In addition, following the operation of opening the rear cover 30 during the water supply operation to the urea water tank 174 prevents the mistake of inputting fuel and urea water. In addition, since the refueling port 32 of the fuel tank 31 and the water supply port 174a of the urea water tank 174 are disposed on the left and right sides of the traveling gas 1, they are arranged on the left and right sides of the traveling gas 1, so that the fuel and Mistake of urea water can be prevented.

<Second Embodiment>

23 and 24 are explanatory views of a modified example in which a supply stand capable of mounting a container 263 for supplying urea water is installed in the vicinity of the urea water tank 174. The water supply port 174a of the urea water tank 174 is installed at a position higher than the waist position of the worker, for example, and there is a problem in that it is difficult to supply water because the height position is high. Thus, as shown in Figs. 23 and 24, the supply table 280 attached to the vertical drawing-out conveyor 8a disposed on the rear side of the urea water tank 174 may be provided.

The feeder table 280 surrounds the periphery of the drawer conveyor 8a and is attached to the drawer conveyor 8a by a pair of feeder bands 281 and 281 attached to the drawer conveyor 8a and a feeder support member 283. Attached. The band 281 has a shape in which the U-shaped shape is roughly divided into two curved portions. One end side of the band 281 (the above-mentioned U-shaped curved portion) is connected by an attachment position adjusting bolt 284. The other end portion of the band 281 (the above-mentioned U-shaped tip end portion) is bolted to the supply table support member 283, for example. The supply table support member 283 is provided with a rod member 285 serving as a pivot point of the supply table 280. The replenishment table 280 is provided so as to be able to rotate the rod member 285 as a pivot point, from an approximately horizontal direction to an upward direction between an approximately horizontal direction and an approximately vertical direction.

As shown in FIG. 24, when supplying water to the urea water tank 174, the supply table 280 is disposed in a substantially horizontal direction so that the water supply container 263 can be disposed on the supply table 280, and the supply table 280 When not using ), the distal end of the replenishing table 280 is disposed on the side of the vertical take-off conveyor 8a to fold the replenishing table 280. By disposing the supply stand 280 in such a manner that it can be folded, the supply stand 280 can be stored compactly when not in use. In addition, since the replenishing table 280 is attached to the vertical drawing-out conveyor 8a to rotate together with the vertical drawing-out conveyor 8a, it can be used at any time. In addition, the end of the band 281 opposite to the supply table support member 283 is connected by a bolt 284, and by fastening the bolt 284, depending on the usage of the supply table 280, the supply table 280 The height position and the installation angle can be adjusted.

The combines in the first and second embodiments include an engine 14 which is a power source mounted on the traveling gas 1, and an exhaust gas purification device 74 for removing nitrogen oxides from the exhaust gas of the engine 14 , A reducing agent tank 174 for receiving a reducing agent supplied to the exhaust gas purification device 74, and a grain tank 7 for bringing in harvested grains. Then, the grain tank 7 is provided with a concave portion 254 for the reducing agent tank, on which the reducing agent tank 174 is mounted in the side center part.

In the combine, the grain tank 7 is configured to be rotatable outside the traveling gas 1, and a recess 254 for the reducing agent tank is formed near the rotation point of the grain tank 7. The grain tank 7 is set so that the traveling direction of the traveling body 1 is in the front-rear direction, and the rotation point of the grain tank 7 is installed at the rear of the grain tank 7 to open the front of the grain tank 7 toward the outside of the cabin. It is possible to rotate. The concave portion 254 for the reducing agent tank is formed on the side 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 is installed upright from the traveling body 1 below the recess 7a for the purification device installation notched in the front of the inboard side of the grain tank 7. A purification device support frame 251 is installed, and an exhaust gas purification device 74 is installed on the purification device support frame 251. The reducing agent tank concave portion 254 is formed by notching the rear side of the grain tank 7 so that the reducing agent tank 174 is installed at a position outside the traveling gas from the rotation point. The reducing agent pipes 179 and 180 connecting the reducing agent tank 174 and the exhaust gas purification device 74 are disposed along the grain tank 7.

The reducing agent pipings 179 and 180 are guided from the reducing agent tank 174 to the center of the traveling gas from the rotation point and passed through the lower portion of the grain tank 7 to the front of the traveling gas 1, and the purifying device support frame 251 ) To the exhaust gas purification device 74. A reducing agent water supply device 175 for supplying a reducing agent to the exhaust gas purification device 74 is provided during the reducing agent piping 177, 179, 180. The reducing agent water supply device 175 is fixed to the support 185 for the supply device installed in the frame 251 for supporting the purification device.

Since the combine tank 7 has a concave portion 254 for a reducing agent tank in which the reducing agent tank 174 is disposed, the batch space of the reducing agent tank 174 can be secured without increasing the outer size of the combine. Can. In addition, the grain tank 7 is configured to be rotatable on the outside of the traveling gas 1, and the recess 254 for the reducing agent tank is a pivot point of the grain tank 7 among the side surfaces of the grain tank 7 When provided on the side close to, the curvature at the time of rotation of the grain tank 7 can be reduced with respect to the reducing agent pipings 179 and 180 connected to the reducing agent tank 174.

The concave portion 254 for the reducing agent tank is formed at a position outside the traveling gas than the rotation point, and the reducing agent pipings 179 and 180 connected to the reducing agent tank 174 are provided from the reducing agent tank 174 to the grain tank 7 If it is to be guided toward the center of the traveling gas 1 rather than the rotation point of, the reducing agent pipings 179 and 180 can be prevented from interfering with the rotation of the grain tank 7. Further, when the reducing agent pipes 179 and 180 pass through the lower portion of the grain tank 7 and are guided to the exhaust gas purification device 74 side, the reducing agent pipes 179 and 180 prevent the rotation of the grain tank 7. Can be prevented.

In addition, the engine 14 is disposed on the front side of the grain tank 7 with the traveling direction of the traveling gas 1 in the front-rear direction, and the concave portion 254 for the reducing agent tank is provided in the grain tank 7. If it is formed on the rear side, the reducing agent tank 174 can be prevented from being affected by heat from the engine 14.

Next, with reference to the drawings, a display screen for displaying various information at the time of harvesting of combines and at the time of non-cutting will be described. First, the structure in the driving cabin 10 will be described with reference to FIG. 25. As described above, the driving cabin 10 is provided with a steering wheel 11 for changing and manipulating the traveling (turning) direction of the traveling body 1 or a driving seat 12 to which an operator is seated. A peripheral speed lever 15 that performs a shift operation of the traveling body 1 is disposed in the side column 210 arranged in the left side of the driver's seat 12. Although not shown in detail, the sub-shift lever 16, threshing clutch lever 17, and harvesting clutch lever 18 are also arranged in the side column 210.

A display device 211 (display unit) capable of displaying various types of information, such as letters, symbols, and images, is disposed inside the handle foil 215 of the steering wheel 11. The display device 211 includes a liquid crystal monitor 212 and an outer case 213 accommodating the same. The display device 211 is fixed to the front column 216 side supporting the steering handle 11 and is not connected to the steering handle 11. For this reason, even if the steering handle 11 is rotated, the display device 211 does not function, and the screen is always easy to see from the operator. A display switching switch 214 which is an example of a display switching member is provided on the outer circumferential side of the liquid crystal monitor 212 in the outer case 213. The indication switching switch 214 is a non-lock type push switch that emits one ON pulse signal under one push.

22, a display controller 351 as a separate ECU (Electronic Control Unit) is provided inside the display device 211. As shown in FIG. The liquid crystal monitor 212 and the display switching switch 214 are electrically connected to the display controller 351, and are electrically connected to an alarm buzzer 328 that is activated to alert the operator. Further, the engine controller 181 is electrically connected to the fuel sensor 221. The fuel sensor 221 detects the remaining amount of fuel in the fuel tank 31 (see FIG. 1 and the like).

In addition, the combine controller 224 provided with a plurality of ECUs is electrically connected to the display controller 351. The combine controller 224 includes a harvesting ECU that controls the driving of the harvesting device 3, a pre-traveling ECU that controls the driving of the traveling unit, such as speed control of intermission by the feed chain 6, and a traveling body 1 After the driving to control the driving of the driving unit, such as the stability control of the posture, and the threshing device 5, including the lifting and lowering control of the discharge auger 8, the opening and closing control of the chaff sheave of the swing sorting panel 57, and the like. It is provided with an ECU before threshing that controls driving, and an ECU after threshing that controls driving of threshing apparatus 5 including turning control of discharge auger 8 and the like.

The parking controller 224, the auger clutch sensor 325, the harvesting clutch sensor 326, the threshing clutch sensor 327, and the rice sensor 225 are electrically connected to the combine controller 224, respectively. The parking brake sensor 324 detects an on-off state (whether or not it is a braking state) of a parking brake pedal (not shown) that maintains and operates the left and right traveling crawlers 2 in the braking state. The auger clutch sensor 325 detects the on-off state of the auger clutch for blocking power connection to the grain discharge conveyor 8. The cutting clutch sensor 326 detects the on-off state of the cutting clutch for cutting off the power connection to the cutting device 3. The cutting clutch sensor 326 detects the on-off state of the cutting clutch for cutting off the power connection to the threshing apparatus 5. The rice sensor 225 is composed of, for example, a plurality of sensors arranged at different height positions in the grain tank 7, and the combine controller 224 for detecting the storage amount of grain in the grain tank 7 is an engine controller It is electrically connected to (181). The engine controller 181, the urea water injection controller 182, the combine controller 224, and the display controller 351 are connected so that they can communicate with each other.

Next, display control of the liquid crystal monitor 212 will be described with reference to FIGS. 26 and 27. As shown in Fig. 26, during the normal operation control during harvesting of the combine, the speedometer indicating the traveling speed (vehicle speed) of the traveling body 1 as the information 360 during harvesting on the liquid crystal monitor 212 ( 361), a load monitor 362 indicating the engine load, an urea water balance meter 363 indicating the urea water remaining amount in the urea water tank 174, a fuel residual quantity meter 364 showing the fuel remaining amount in the fuel tank 31, A sub-shift monitor 365 showing the setting state of the sub-shift lever 16, a cutting shift monitor 366 showing the setting state of the driving speed in the harvesting device 3, and a grain storage amount in the grain tank 7 Grain tank monitor 367, rapid loss monitor 368 for monitoring the loss from the rapid 56, swinging loss monitor 369 for monitoring the loss from the swing sorting panel 57, indicating the flow rate of crops during cutting A harvest flow rate monitor 370, a crop moisture monitor 371 indicating the moisture of the crop during harvesting, and a headlight lighting display 372 that is displayed or non-displayed according to whether the headlight is turned on or off are displayed. The urea water level meter 363 and the fuel level meter 364 are displayed adjacent to the left side of the liquid crystal monitor 212 (the side of the liquid crystal monitor 212 on the left side of the paper in FIG. 26). Also, the grain tank monitor 367 is displayed near the right side of the liquid crystal monitor 212.

In addition, the urea water remaining amount indicator 363 displays an urea water remaining amount display 363a (reducing agent remaining amount display) according to the urea water remaining amount. The display area of the urea water remaining amount display 363a is, for example, a substantially rectangular shape, and increases or decreases in the vertical direction of the liquid crystal monitor 212 (up and down the paper in FIG. 26) according to the urea water remaining amount. Similarly, the fuel remaining amount display 364a in which the display area increases or decreases in the vertical direction is displayed on the fuel remaining amount meter 364. In addition, the grain tank monitor 367 displays a grain storage amount display 367a according to the grain storage amount. The display area of the grain storage amount display 367a is, for example, divided into four in the vertical direction, and increases or decreases in the vertical direction according to the grain storage amount. Remaining urea number display 363a (for example, blue color) and remaining fuel level display 364a (for example, white color) and grain storage amount display 367a (for example, orange or red color) Colors) are displayed in different colors.

The urea water mark 363b adjacent to the urea water balance meter 363 is displayed on the liquid crystal monitor 212. In addition, a fuel mark 364b is displayed adjacent to the fuel level meter 364. The urea water mark 363b and the fuel mark 364b have different shapes. For example, the urea water mark 363b is displayed at the upper position of the urea water residual quantity meter 363, and the fuel mark 364b is displayed at the information position of the fuel residual quantity meter 364.

In addition, the length of the increase/decrease direction of the display area of the urea water remaining amount display 363a displayed by the urea water system 363 on the liquid crystal monitor 212 (top and bottom direction in FIG. 26) is the maximum display area of the urea water remaining amount display 363a. The urea water warning lamp 363c (alarm light display) lights up at a position near the upper side of the urea water level meter 363 with the urea water mark 363b interposed therebetween, for example, when it is 10% or less with respect to the length of the increase/decrease direction. do. Similarly, when the length of the increase/decrease direction of the display area of the fuel remaining amount display 364a is 10% or less with respect to the length of the increase/decrease direction of the display maximum area, the fuel residual quantity meter 364 is interposed between the fuel marks 364b. The fuel warning lamp 364c (alarm indicator) is lit in the upper vicinity position. The urea warning lamp 363c (for example, a red color) and the fuel warning lamp 364c (for example, an orange color) are displayed in different colors. In Fig. 26, the length of the increase/decrease direction of the display area of the urea number remaining amount display 363a and the fuel residual amount display 364a is greater than 10% with respect to the length of the increase/decrease direction of the maximum display area, respectively, for convenience. An alarm lamp 363c and a fuel alarm lamp 364c are shown.

Next, as shown in Fig. 26, during the normal operation control during the combine harvesting operation, the load monitor displayed on the liquid crystal monitor 212 as the non-working information 380 and the cutting operation information 360 (362), the sudden loss monitor (368), the oscillation loss monitor (369) and the harvest flow monitor (370) are changed to turn on (flashing) states such as the rotation meter 381 indicating the number of revolutions of the engine 14 and the direction indication. A direction indicator light 382 indicating it is displayed. Other indications in the non-working information 380 are the same as those in the harvesting work information 360. The rotator 381 is displayed near the center of the liquid crystal monitor 212. The turn indicator display 382 is displayed near the upper left corner and the upper right corner of the liquid crystal monitor 212, respectively.

26 and 27, on the liquid crystal monitor 212, the urea water remaining amount display 363a and the fuel remaining amount display 364a which are reduced by the use of the combine are displayed adjacently. Therefore, the operator can check the remaining amount of both fuel and urea water without moving the gaze. Therefore, the visibility of the operator is improved as compared with the case where the remaining amount display is displayed at a remote location. In addition, since the urea water remaining amount display 363a and the fuel remaining amount display 364a are displayed in different colors, the operator can easily identify the urea water remaining amount display 363a and the fuel remaining amount display 364a, and the fuel remaining amount It is possible to prevent the misidentification of the residual amount of excess urea.

In addition, the grain storage amount display 367a according to the grain storage amount in the grain tank 7 sandwiches the central portion of the display monitor 212 between the display positions of the urea water remaining amount display 363a and the fuel remaining amount display 364a (display monitor) It is displayed at a position opposite the left side of (212) (near the right side of display monitor 212). In this way, since the urea water and fuel remaining amount indications 363a and 364a and the grain storage amount indication 367a are displayed at positions separated from each other, the operator increases the remaining amount of fuel and reducing agent by the use of the combine and increases. By dividing and judging fine grain storage, you can grasp the phenomenon in an instant. Therefore, the visibility and discriminability of the operator are improved on the display monitor 212 as compared to the case where the urea water and fuel remaining amount displays 363a and 364a and the grain storage amount display 367a are displayed at close locations. In addition, misidentification of the urea water remaining amount display 363a and the fuel remaining amount display 364a and the grain storage amount display 367a by the operator is prevented. In addition, since the urea water remaining amount display 363a, the fuel remaining amount display 364a, and the grain storage amount display 367a are displayed in different colors, the visibility and identification of the operator are further improved.

In addition, in the display monitor 212, the urea water mark 363b displayed adjacent to the urea water level meter 363 and the fuel mark 364b displayed adjacent to the fuel level meter 364 have different shapes. Therefore, the operator can easily discriminate the urea water residual quantity meter 363 (urea water remaining quantity display 363a) and the fuel residual quantity meter 364 (fuel remaining quantity display 364a). Thereby, the visibility and discriminability of an operator can be improved regarding the residual amount of urea water and the residual amount of fuel.

Further, on the display monitor 212, an urea water warning lamp 363c is displayed at an upper position of the urea water remaining amount display 363a, and a fuel alarm lamp 364c is positioned at an upper position of the fuel remaining amount display 364a. Since it is displayed, there is no need to separately install a warning light member for the remaining fuel amount and the residual amount of the reducing agent, so it is effective in reducing manufacturing cost and deployment space. In addition, the urea water alarm lamp 363c and the fuel alarm lamp 364c displayed in different colors at the upper positions of the urea water level meter 363 and the fuel level meter 364 are urea water level alarm and fuel by the operator. It is possible to improve the discrimination of the residual amount warning, and it is possible to prevent misrecognition of the remaining amount of fuel and the remaining amount of urea water.

Next, with reference to FIGS. 28 and 29, description will be given of a modified example of the display screen of the information 360 during cutting and non-working information 380. 28 and 29, the maximum display area of the urea water remaining amount display 363a and the fuel remaining amount display 364a is a triangle, respectively. The display area of the remaining amount display 363a, 364a is, for example, a right-angled triangle, an acute angle of one of the two acute angles is arranged on the lower side (a decreasing direction of the increase/decrease direction), and the acute angle and the right angle of the other are on the upper side ( It is arranged in the increasing direction). The lower acute angle (one acute angle) has a smaller angle than the upper acute angle (the other acute angle). That is, the length of the neighboring side between the right angle and the lower acute angle is longer than the length of the neighboring side between the right angle and the upper acute angle. The neighboring sides between the right angle and the lower acute angle are arranged along the increase/decrease direction (up/down direction) of the remaining amount display 363a, 364a. The display positions of the urea water remaining amount display 363a and the fuel remaining amount display 364a are arranged such that neighboring sides between the right angle and the lower acute angle face each other.

In addition, a multi-remaining amount mark 385 and a small residual amount 386 are disposed between the urea water residual amount meter 363 and the fuel residual amount meter 364. The multi-remaining mark 385 is disposed near a right angle (top) of the display maximum area of the remaining amount display 363a, 364a. The small residual amount mark 385 is disposed near the acute angle (lower side) below the maximum display area of the remaining amount displays 363a and 364a. Since the maximum display area of the remaining amount displays 363a and 364a is a right-angled triangle in which the lower acute angle is smaller than the upper acute angle, the display dimensions in the left-right direction (direction orthogonal to the increasing direction) are smaller than when the maximum display area is rectangular. Even if it is the same, the display area of the remaining amount display 363a, 364a can be made small, ensuring the visibility of an operator. In particular, it is possible to secure a space capable of displaying another image in the vicinity of the acute angle below the remaining amount display 363a and 364a. Thereby, for example, the display space of the remaining amount mark 385 and the small remaining amount mark 386 on the liquid crystal monitor 212 can be secured. In addition, the display position of the load monitor 362 can be brought closer to the left, or the display size of the load monitor 362 can be increased.

The combine of the present embodiment notifies the operator that the urea water tank 174 has expired when water is supplied to the urea water tank 174 by performing control by the flow shown in FIG. 30. As shown in Fig. 30, when a key switch (not shown) is operated and power is supplied to each of the controllers 181, 182, 224, and 351, the liquid level sensor (residual sensor) of the urea water tank 174 When the increase in the urea water amount is confirmed by the signal from 184, it is determined that the urea water is supplied. Then, the residual amount of urea water in the urea water tank 174 is recognized based on the signal from the liquid level sensor 184, and the residual amount of urea water exceeds the first predetermined amount (for example, 80% of the tank capacity). In the case, it is determined that the urea water tank 174 has expired. When it is determined that the urea water tank 174 has expired, the operator is notified of the full water warning. As the full water warning, for example, by flashing the alarm buzzer 328 or the brake light 329 (see Fig. 15) near the urea water tank 174 installation position, the urea water tank is supplied to the operator during the water supply operation. It can be said that 174 is full.

The combine of the present embodiment notifies the operator that the remaining amount of urea water in the urea water tank 174 is low by executing control by the flow shown in FIG. 31. As shown in FIG. 31, when a key switch (not shown) is operated and power is supplied to each of the controllers 181, 182, 224, and 351, the liquid level sensor (residual sensor) of the urea water tank 174 The residual amount of urea water in the urea water tank 174 is confirmed by the signal from 184. In order to report that the urea water remaining amount is detectable and the urea water remaining amount is less than the second predetermined amount (for example, 10%), the urea water remaining amount alarm is issued. At this time, the urea water warning lamp 363c is lit on the liquid crystal monitor 212, and a display is promoted in the center of the liquid crystal monitor 212 to promote the supply of urea water.

In addition, when it is impossible to detect the remaining amount of urea water, and when urea water is supplied to the urea water injection valve 178 by the urea water supply device 175, it is stopped such as cutting, threshing, and grain discharge. The first operation limiting alarm that promotes is displayed in the center of the liquid crystal monitor 211. Then, by confirming that the work machine clutch is cut by the signal from the work clutch sensors 325 to 327, the fuel injection amount to the diesel engine 14 is lowered, and the output of the diesel engine 14 is lowered. Order.

In addition, when the supply of urea water to the urea water injection valve 178 is not possible by the urea water supply device 175, the second for promoting stopping of cutting, threshing and grain discharge work, and parking of the combine. The operation limit alarm is displayed in the center of the liquid crystal monitor 211. Then, by the signals from the parking brake sensors 324 and the respective work clutch sensors 325 to 327, when it is confirmed that the combine is a parking lot after each work machine clutch is cut, the diesel engine 14 is low idle. ) Operate at rotation speed.

In addition, the structure of each part in this invention is not limited to embodiment of illustration, Various changes are possible within the range which does not deviate from the meaning of this invention.

DESCRIPTION OF SYMBOLS 1 Running body 5 Threshing apparatus
7: Grain tank 8a: Vertical take-off conveyor (support member)
14: engine 31: fuel tank
74: exhaust gas purification device 174: urea water tank (reduction agent tank)
179: Urea water supply pipe (reduction pipe) 180: Urea water return pipe (reduction pipe)
211: display device (display unit) 212: liquid crystal monitor (display screen)
254: recessed portion 254a: bottom of the recessed portion
363a: Display of the remaining amount of urea (remaining amount of reducing agent)
364a: Fuel level display

Claims (7)

An engine that is a power source mounted on the traveling gas, an exhaust gas purifying device for removing nitrogen oxides from the exhaust gas of the engine, a reducing agent tank containing a reducing agent supplied to the exhaust gas purifying device, and harvested grains In the combine with the grain tank,
The traveling direction of the traveling gas is set to the front-rear direction, the rotation point of the grain tank is installed at the rear of the grain tank, and the grain tank is rotatable so as to open the front of the grain tank toward the outside of the cabin
While the exhaust gas purifying device is installed in front of the inboard side of the grain tank, the reducing agent tank is provided in the recess for the reducing agent tank formed by notching the position on the rear side of the grain tank and outside the traveling gas from the rotation point. Installed,
A combine characterized in that a reducing agent pipe connecting the reducing agent tank and the exhaust gas purification device is disposed along the grain tank. According to claim 1,
The reducing agent piping is guided from the reducing agent tank to the center of the traveling gas from the pivot point, passes through the lower portion of the grain tank and is directed to the traveling gas, and a frame for supporting a purification device installed upright from the traveling gas is installed, The combine characterized in that it is led to the exhaust gas purifying device along the frame for supporting the purifying device. According to claim 2,
A combine, characterized in that 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 piping, and the reducing agent water supply device is fixed to a support for a supply device installed in a frame for supporting the purification device. . According to claim 1,
A fuel tank accommodating fuel of the engine;
A combine having a display unit for displaying a fuel remaining amount display according to the remaining amount of fuel in the fuel tank and a residual amount of reducing agent according to the remaining amount of reducing agent in the reducing agent tank adjacent to a display screen. delete delete delete

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