JP6879714B2 - Harvester - Google Patents

Description

The present invention relates to a harvester such as a combine harvester or a corn harvester, which is equipped with an engine and performs harvesting work while traveling the traveling machine by the power of the engine.

Exhaust gas is generated as the engine operates, and in recent years, it has been desired to reduce nitrogen oxides contained in the exhaust gas. Therefore, some engines are equipped with an exhaust gas purification device for removing nitrogen oxides in the exhaust gas path of the engine. The exhaust gas purification device is configured to mix urea water with exhaust gas to generate ammonia and reduce nitrogen oxides (NOx) contained in the exhaust gas by the reducing action of ammonia.

Conventionally, in a combine harvester, which is an example of a harvester, an exhaust gas purification device is provided in a space between a threshing device located on the rear side of the machine and a grain tank, and a urea water tank for storing urea water is the body. Some were provided in the space above the front engine (see, for example, Patent Document 1).

Japanese Unexamined Patent Publication No. 2014-193120

In the above-mentioned conventional configuration, since the exhaust gas purification device is provided at a position separated from the engine, a long pipe is required to guide the high-temperature exhaust gas discharged from the engine to the exhaust gas purification device, and the long pipe is required. There is a disadvantage that the piping structure becomes complicated, such as applying heat insulation treatment.

Therefore, in providing the equipment necessary for exhaust gas treatment, it has been desired to simplify the configuration for exhaust gas treatment.

The characteristic configuration of the harvester according to the present invention is
The traveling machine body is provided with a driver unit having a driver's seat, an engine room having an engine located below the driver's seat, and an exhaust gas purification device for reducing nitrogen oxides contained in the exhaust gas of the engine.
Another exhaust gas purification device that reduces particulate matter contained in the exhaust gas of the engine is interposed between the engine and the exhaust gas purification device.
The exhaust gas purification device and the other exhaust gas purification device are provided in the engine room.
The exhaust gas purifying device is provided so as to be located on the side opposite to the side where the radiator cooling fan exists with respect to the engine.
The other exhaust gas purification device is provided at a position corresponding to the upper part of the engine.
The exhaust gas purification device includes an exhaust relay unit that mixes the exhaust gas discharged from the other exhaust gas purification device and urea water, and a device main body unit that reduces the exhaust gas discharged from the exhaust gas purification device.
The apparatus main body is provided on the upper side of the engine in a state of being located on the side opposite to the side where the radiator cooling fan exists with respect to the engine.
The exhaust relay unit is provided on the upper side of the other exhaust gas purification device and on the side opposite to the existing side of the radiator cooling fan with respect to the device main body unit.
The portion of the exhaust gas purification device on the left-right direction opposite to the radiator cooling fan protrudes outward from the end portion of the engine room on the left-right direction opposite to the radiator cooling fan.
The exhaust gas purifying device is provided with a cover that covers the upper, front, and lateral sides of the protruding portion that protrudes outward from the engine room.

According to the present invention, since the exhaust gas purification device is provided in the engine room located below the driver's seat, the engine and the exhaust gas purification device are provided in the engine room. Therefore, the engine and the exhaust gas purification device can be provided close to each other, the pipe for exhaust gas flow connecting them is shortened, and the pipe structure is simplified.
In addition, straw dust and fine dust generated during harvesting work may fall from the upper side or the side side with respect to the protruding portion of the exhaust gas purification device, or may fall from the front side as the aircraft travels. By covering this with a cover, it is possible to avoid adverse effects caused by dust falling on another exhaust gas purifying device or an exhaust relay portion.
Moreover, an exhaust gas purifying device for reducing nitrogen oxides contained in the exhaust gas and another exhaust gas purifying device for reducing particulate matter contained in the exhaust gas are provided in the engine room, respectively. The exhaust gas of the engine passes through another exhaust gas purification device to reduce particulate matter, and then passes through the exhaust gas purification device to reduce nitrogen oxides, further purifying the exhaust gas. Since the exhaust gas purification device and another exhaust gas purification device are provided in the engine room, they can be provided in a state close to the engine, the pipe for exhaust gas flow connecting them is shortened, and the piping structure is simplified.
In addition, another exhaust gas purifier is provided in a position corresponding to the upper part of the engine, so the space above the engine can be used to rationalize another exhaust gas purifier without affecting the placement of other devices. Can be deployed as a target. Further, the exhaust gas purification device is located on the side opposite to the side where the radiator cooling fan exists, the main body of the device is located on the upper side of the engine, and the exhaust relay part is on the upper side of another exhaust gas purification device. Is located in. Therefore, the exhaust gas purification device is provided on the downstream side of the cooling air from the radiator cooling fan, and the high-temperature air around the exhaust gas purification device, which tends to become hot, can be discharged to the outside as it is without passing through the engine room. Further, the exhaust gas purification device and another exhaust gas purification device can be compactly deployed on the upper part of the engine.
The characteristic configuration of the harvester according to the present invention is that the traveling machine is provided with a driver unit having a driver's seat, an engine room having an engine located below the driver's seat, and nitrogen oxide contained in the exhaust gas of the engine. An exhaust gas purification device for reducing and another exhaust gas purification device for reducing particulate matter contained in the exhaust gas of the engine are provided, the exhaust gas purification device is provided in the engine room, and the exhaust gas purification device is provided. The other exhaust gas purifying device is provided above the engine and on the side opposite to the side where the radiator cooling fan exists with respect to the engine, and the other exhaust gas purifying device is above the engine and. The exhaust gas purification device is provided on the side opposite to the existing side of the radiator cooling fan, and the exhaust gas purification device includes an exhaust relay unit that mixes exhaust gas discharged from the other exhaust gas purification device and urea water, and discharges from the exhaust gas relay unit. The device main body for reducing the exhaust gas is provided, and the exhaust relay section is above the other exhaust gas purification device and is on the side where the radiator cooling fan exists with respect to the device main body. Provided on the opposite side, each of the other exhaust gas purification device, the device main body, and the exhaust relay is provided in a posture along a direction intersecting the alignment direction of the engine and the radiator cooling fan. It is in the point that it is.
According to the present invention, since the exhaust gas purification device is provided in the engine room located below the driver's seat, the engine and the exhaust gas purification device are provided in the engine room. Therefore, the engine and the exhaust gas purification device can be provided close to each other, the pipe for exhaust gas flow connecting them is shortened, and the pipe structure is simplified. Further, the cooling air generated by the radiator cooling fan passes around the radiator and the engine, and further passes around another exhaust gas purification device, and is discharged to the outside. That is, another exhaust gas purification device is provided on the downstream side of the cooling air. Therefore, the high-temperature air around another exhaust gas purification device, which tends to become hot due to the passage of exhaust gas, can be discharged to the outside as it is without passing through the engine room. In addition, another exhaust gas purifier is provided in a position corresponding to the upper part of the engine, so the space above the engine can be used to rationalize another exhaust gas purifier without affecting the placement of other devices. Can be deployed as a target. Further, the exhaust gas purification device is located on the side opposite to the side where the radiator cooling fan exists, the main body of the device is located on the upper side of the engine, and the exhaust relay part is on the upper side of another exhaust gas purification device. Is located in. Therefore, the exhaust gas purification device is provided on the downstream side of the cooling air from the radiator cooling fan, and the high-temperature air around the exhaust gas purification device, which tends to become hot, can be discharged to the outside as it is without passing through the engine room. Further, the exhaust gas purification device and another exhaust gas purification device can be compactly deployed on the upper part of the engine.
The characteristic configuration of the harvester according to the present invention is that the traveling machine is provided with a driver unit having a driver's seat, an engine room having an engine located below the driver's seat, and nitrogen oxide contained in the exhaust gas of the engine. A threshing device provided with a reducing exhaust gas purification device, the exhaust gas purification device being provided in the engine room to thresh the harvested crop, a grain tank provided side by side with the threshing device, and the exhaust gas. An exhaust pipe connected to the rear side of the purifying device and discharging purified exhaust gas to the outside, and a lateral portion on the front side of the threshing tank and on the side of the threshing device. A threshing device for transporting grains discharged from the threshing device to the threshing tank is provided, and the rear part of the driving unit and the front part of the threshing device overlap each other in a side view of the machine. The driving unit is provided on one side of the traveling machine in the left-right direction, the threshing device is provided on the other side of the traveling machine in the left-right direction, and the exhaust pipe is provided at the rear portion of the driving unit and the front portion of the threshing device. It extends upward between the threshing devices and extends above the threshing device on the front side of the threshing device, and an exhaust port is formed at the upper end of the threshing device. It is at a point that opens toward the threshing device side above the device.
According to the present invention, since the exhaust gas purification device is provided in the engine room located below the driver's seat, the engine and the exhaust gas purification device are provided in the engine room. Therefore, the engine and the exhaust gas purification device can be provided close to each other, the pipe for exhaust gas flow connecting them is shortened, and the pipe structure is simplified. Further, the exhaust pipe can be provided without restricting the arrangement of other devices by utilizing the space between the rear part of the driving unit and the front part of the threshing device. Since the exhaust pipe discharges the exhaust gas from the upper side of the machine body, it is easy to dissipate the exhaust gas to the outside. Further, since the exhaust pipe extends above the grain raising device and the exhaust port at the upper end is open toward the threshing device side, the exhaust gas discharged from the exhaust port has grains inside. It does not directly fall on the existing grain tank or threshing device, and there is little risk of adversely affecting the grains.

In the present invention, it is preferable that the exhaust gas purification device is provided on the engine.

According to this configuration, the exhaust gas purification device can be rationally deployed by utilizing the space above the engine without affecting the arrangement of other devices.

In the present invention, it is preferable that the exhaust gas purification device is placed and supported on the upper part of the engine.

According to this configuration, the exhaust gas purification device can be supported in a stable state by utilizing the casing of the engine having high rigidity.

In the present invention
The engine is provided so as to be located behind the front vertical wall portion of the engine room.
In the side view of the machine body, it is preferable that the position of the front end portion of the exhaust gas purifying device in the front-rear direction of the machine body is the same as or substantially the same as the position of the front end portion of the engine in the front-rear direction of the machine body.

According to this configuration, the exhaust gas purification device and the engine have the same or substantially the same position of the front end portion in the front-rear direction of the airframe in the side view of the airframe, so that the exhaust gas purification device is located on the front side of the airframe with respect to the engine. It does not protrude toward you.

If the exhaust gas purification device protrudes toward the front side of the engine, significant structural improvements such as changing the position of the front vertical wall part of the engine room are required, but according to this configuration, this The exhaust gas purification device can be installed without changing the arrangement structure of other devices in the engine room without requiring such structural improvement.

In the present invention
The driver's seat is provided above the engine.
A boarding / alighting gate for passengers to enter and exit is provided on the side of the driver's seat.
A side panel is provided on the side of the driver's seat on the side opposite to the entrance.
It is preferable that the exhaust gas purifying device is provided in the engine room on the lower side of the side panel in a state in which the longitudinal direction is along the front-rear direction of the machine body.

In the harvester, the side panel provided on the opposite side of the driver's seat from the entrance / exit is equipped with various operating tools, and the seat can be placed with the elbow of the driver seated in the driver's seat. It is often provided at a position higher than the support base and has a long shape in the front-rear direction.

Therefore, in this configuration, by providing an exhaust gas purification device on the lower side of the side panel in a state where the longitudinal direction is along the front-rear direction of the machine body, the space on the lower side of the side panel is effectively utilized to affect the arrangement of other devices. The exhaust gas purification device can be deployed without giving.

In the present invention
Another exhaust gas purification device that reduces particulate matter contained in the exhaust gas of the engine is interposed between the engine and the exhaust gas purification device.
It is preferable that the other exhaust gas purification device is provided in the engine room.

According to this configuration, an exhaust gas purifying device for reducing nitrogen oxides contained in exhaust gas and another exhaust gas purifying device for reducing particulate matter contained in exhaust gas are provided in the engine room, respectively. The exhaust gas of the engine passes through another exhaust gas purification device to reduce particulate matter, and then passes through the exhaust gas purification device to reduce nitrogen oxides, further purifying the exhaust gas. Since the exhaust gas purification device and another exhaust gas purification device are provided in the engine room, they can be provided in a state close to the engine, the pipe for exhaust gas flow connecting them is shortened, and the piping structure is simplified.

In the present invention, it is preferable that the other exhaust gas purification device is provided on the side opposite to the side where the radiator cooling fan exists in the engine.

According to this configuration, the cooling air generated by the radiator cooling fan passes around the radiator and the engine, and further passes around another exhaust gas purification device, and is discharged to the outside. That is, another exhaust gas purification device is provided on the downstream side of the cooling air. Therefore, the high-temperature air around another exhaust gas purification device, which tends to become hot due to the passage of exhaust gas, can be discharged to the outside as it is without passing through the engine room.

In the present invention, the portion of the other exhaust gas purification device in the left-right direction opposite to the radiator cooling fan is located in the engine room in the left-right direction from the end opposite to the radiator cooling fan. It is preferable that it protrudes to the outside of the room.

When installing another exhaust gas purification device near the engine in order to reduce particulate matter contained in the exhaust gas, the entire other exhaust gas purification device is housed inside the engine room, and the surrounding area is, for example, the engine bonnet. It is conceivable to enclose it with a member forming an engine room such as.

However, in such a configuration, the heat of another exhaust gas purifying device, which becomes hot due to the passage of exhaust gas, is trapped in the engine room, and the temperature in the engine room may rise. If the entire exhaust gas purification device, which is a large device, is housed in the engine room, the engine room may protrude upward and the space for the driver's section may be narrowed, which may adversely affect the area around the engine room. There is also.

On the other hand, according to this configuration, another exhaust gas purification device projects from the end opposite to the radiator cooling fan to the outside of the engine room, so that the high temperature air around the other exhaust gas purification device is released. It is easy to be discharged to the outside without being trapped in the engine room. Moreover, since it is not necessary to forcibly store the entire other exhaust gas purification device in the engine room surrounded by a partition wall, the influence on the surrounding area such as the space of the driving part is reduced. be able to.

In the present invention, it is preferable that the other exhaust gas purifying device is provided with a cover that covers the upper, front, and lateral sides of the purifying device projecting portion protruding outward from the engine room.

According to this configuration, straw dust and fine dust generated during the harvesting work fall on the protruding part of the purification device in another exhaust gas purification device from the upper side or the lateral side, or the aircraft travels. By covering the fact that the dust falls from the front side with a cover, it is possible to avoid the adverse effect of the dust falling on another exhaust gas purification device.

In the present invention, it is preferable that the lateral cover portion of the cover that covers the purifying device protruding portion from the lateral side is made of a porous member, and the rear portion of the purifying device protruding portion is open.

According to this configuration, the high-temperature air around another exhaust gas purification device can be discharged to the outside of the side through a large number of holes formed in the side cover portion, and the purification device is open. High-temperature air can also be discharged to the rear outside from the rear side of the protruding portion. As a result, it becomes easier to avoid heat buildup around another exhaust gas purification device and the temperature from rising excessively. In addition, since the cover is open at the rear of the protruding portion of the purification device, it is possible to prevent dust from falling on another exhaust gas purification device, but heat is released as compared with the case where it is discharged only from a large number of holes. The effect is enhanced.

In the present invention, it is preferable that the other exhaust gas purification device is supported by the engine.

According to this configuration, another exhaust gas purification device can be supported in a stable state by utilizing the casing of the engine having high rigidity.

In the present invention
The other exhaust gas purification device is provided at a position corresponding to the upper part of the engine.
The exhaust gas purification device includes an exhaust relay unit that mixes the exhaust gas discharged from the other exhaust gas purification device and urea water, and a device main body unit that reduces the exhaust gas discharged from the exhaust gas purification device.
The apparatus main body is provided on the upper side of the engine in a state of being located on the side opposite to the side where the radiator cooling fan exists with respect to the engine.
It is preferable that the exhaust relay portion is provided on the upper side of the other exhaust gas purification device and on the side opposite to the existing side of the radiator cooling fan with respect to the device main body portion.

According to this configuration, another flue gas purification device is provided at a position corresponding to the upper part of the engine, so that the space above the engine can be used without affecting the arrangement of the other flue gas. Purification equipment can be reasonably deployed. Further, the exhaust gas purification device is located on the side opposite to the side where the radiator cooling fan exists, the main body of the device is located on the upper side of the engine, and the exhaust relay part is on the upper side of another exhaust gas purification device. Is located in.

Therefore, the exhaust gas purification device is provided on the downstream side of the cooling air from the radiator cooling fan, and the high-temperature air around the exhaust gas purification device, which tends to become hot, can be discharged to the outside as it is without passing through the engine room. Further, the exhaust gas purification device and another exhaust gas purification device can be compactly deployed on the upper part of the engine.

In the present invention, the portion of the exhaust relay portion on the left-right direction opposite to the radiator cooling fan is located in the engine room from the end portion of the engine room on the left-right direction opposite to the radiator cooling fan. It is preferable that it protrudes outward.

According to this configuration, as in the case of another exhaust gas purification device as described above, the exhaust relay portion protrudes from the end opposite to the radiator cooling fan to the outside of the engine room. The high temperature air around it is easily exhausted to the outside without being trapped in the engine room. Moreover, since it is not necessary to forcibly store the entire exhaust relay unit in the engine room surrounded by a partition wall, it is possible to reduce the influence on the surrounding area such as narrowing the space of the operating unit. it can.

In the present invention, it is preferable that the exhaust relay portion is provided with a cover that covers the upper, front, and lateral sides of the relay portion protruding portion protruding outward from the engine room.

According to this configuration, straw dust and fine dust generated during the harvesting work fall on the protruding part of the purification device in another exhaust gas purification device from the upper side or the lateral side, or the aircraft travels. By covering the fact that the dust falls from the front side with a cover, it is possible to avoid the adverse effect of the dust falling on another exhaust gas purification device.

In the present invention, it is preferable that the lateral cover portion of the cover that covers the lateral side of the relay portion protruding portion is made of a porous member, and the rear portion of the relay portion protruding portion is open.

According to this configuration, the high-temperature air around another exhaust gas purification device can be discharged to the outside of the side through a large number of holes formed in the side cover portion, and the purification device is open. High-temperature air can also be discharged to the rear outside from the rear side of the protruding portion. As a result, it becomes easier to avoid heat buildup around another exhaust gas purification device and the temperature from rising excessively. In addition, since the cover is open at the rear of the protruding portion of the purification device, it is possible to prevent dust from falling on another exhaust gas purification device, but heat is released as compared with the case where it is discharged only from a large number of holes. The effect is enhanced.

In the present invention, the other exhaust gas purification device is provided below the exhaust relay portion.
The portion of the other exhaust gas purification device on the left-right direction opposite to the radiator cooling fan protrudes to the outside of the engine room from the end portion of the engine room on the left-right direction opposite to the radiator cooling fan. ,
The portion of the exhaust relay portion on the left-right direction opposite to the radiator cooling fan protrudes to the outside of the engine room from the end portion of the engine room on the left-right direction opposite to the radiator cooling fan. Is suitable.

According to this configuration, since each of the other exhaust gas purification device and the exhaust relay unit protrudes to the outside of the engine room, the high temperature air around the other exhaust gas purification device and the exhaust gas relay unit is trapped in the engine room. It is easy to be discharged to the outside. Moreover, since it is not necessary to forcibly store the entire exhaust gas purification device and the exhaust relay unit in the engine room surrounded by a partition wall, the space of the operating unit is narrowed, and the surrounding area is reduced. The impact can be reduced.

In the present invention, the purifying device protruding portion protruding outward from the engine room of the other exhaust gas purifying device, and the relay portion protruding portion protruding outward from the engine room of the exhaust relay portion are above. It is preferable that a cover is provided to cover the front and side surfaces.

According to this configuration, straw dust, fine dust, etc. generated during the harvesting work are on the upper side or sideways with respect to the protruding portion of the purifying device in another exhaust gas purifying device and the protruding portion of the relay portion in the exhaust relay portion. By covering the falling from the side or the falling from the front as the aircraft travels with a cover, it is possible to avoid the adverse effect of dust falling on another exhaust gas purification device or the exhaust relay portion.

In the present invention, the purifying device protruding portion and the lateral cover portion covering the lateral side of the relay portion protruding portion of the cover are formed of a porous member.
It is preferable that the rear of the purifying device protruding portion and the relay portion protruding portion is open.

According to this configuration, the high-temperature air around another exhaust gas purification device can be discharged to the outside of the side through a large number of holes formed in the side cover portion, and the purification device is open. High-temperature air can also be discharged to the rear outside from the rear side of the protruding portion. As a result, it becomes easier to avoid heat buildup around another exhaust gas purification device and the temperature from rising excessively. Since the cover is open behind the protruding part of the purification device, it is possible to prevent dust from falling on another exhaust gas purification device, but it has a heat release effect compared to releasing it only from a large number of holes. Increase.

In the present invention, the cover includes a first cover portion that covers the upper side and the lateral side of the relay portion protruding portion, and a second cover portion that covers the lateral side of the purifying device protruding portion.
The purifying device protruding portion protrudes outward from the relay portion protruding portion,
The second cover portion is provided so as to project outward from the first cover portion to form a step in the left-right direction, and the first cover portion and the second cover portion are arranged vertically. Suitable.

Since another exhaust gas purification device, which generally tends to be larger than the exhaust relay section, is projected outward from the exhaust relay section, the entire other exhaust gas purification device and the exhaust relay section are surrounded by a partition wall. Since it is not necessary to forcibly store the engine in the enclosed engine room, it is possible to reduce the influence on the surrounding area, such as narrowing the space of the driving unit.

Further, as a cover, a first cover portion that covers the protruding portion of the relay portion and a second cover portion that covers the protruding portion of the purification device are provided in a vertically arranged state, and the second cover portion is outside the first cover portion. A step is formed in the left-right direction between the second cover portion and the first cover portion. With this configuration, the first cover section is brought closer to the exhaust relay section, and the second cover section is brought closer to another exhaust gas purification device, so that the cover does not protrude unnecessarily and is formed on the upper side of the step. The outer space can also be effectively used as a passage area for wiring, piping, and the like. Further, since the first cover portion and the second cover portion are separately formed, it is possible to easily perform maintenance work such as cleaning by removing only necessary parts without removing the entire cover.

In the present invention
The other exhaust gas purification device is provided with an exhaust inlet portion for receiving the exhaust gas from the engine on the front side and an exhaust outlet portion for discharging the exhaust gas after the purification treatment on the rear side.
The exhaust gas purification device is provided with an exhaust inlet portion on the front side for receiving exhaust gas supplied from the other exhaust gas purification device via the exhaust relay unit, and an exhaust outlet on the rear side for discharging the exhaust gas after purification treatment. It is preferable to have a part.

According to this configuration, another exhaust gas purification device receives the exhaust gas discharged from the engine from the exhaust inlet on the front side, executes the reduction treatment of particulate matter while flowing it to the rear side of the machine, and then the rear part. An exhaust flow path is formed inside the device so that the exhaust gas is discharged from the exhaust outlet on the side.

The exhaust gas purification device flows the exhaust gas discharged from another exhaust gas purification device to the front side of the machine while mixing it with urea water through the exhaust relay part, and then supplies it to the main body of the machine, and flows the inside of the main body to the rear side of the machine. An exhaust flow path is formed so that the exhaust gas is discharged from the exhaust outlet portion.

While the exhaust gas purification device and another exhaust gas purification device are compactly arranged on the upper part of the engine, the exhaust gas can be rationally flowed so that the exhaust gas flow path is as short as possible.

In the present invention
Equipped with a threshing device to thresh the harvested crops
The driving unit is provided on one side of the traveling machine in the left-right direction, and the threshing device is provided in the left-right direction of the traveling machine, with the rear part of the driving unit and the front part of the threshing device overlapping in a side view of the machine body. Provided on the other side
An exhaust pipe that discharges the purified exhaust gas to the outside is connected to a location on the rear side of the body of the exhaust gas purification device.
It is preferable that the exhaust pipe extends upward between the rear part of the driving part and the front part of the threshing device.

According to this configuration, the exhaust pipe can be provided without restricting the arrangement of other devices by utilizing the space between the rear part of the driving unit and the front part of the threshing device. Since the exhaust pipe discharges the exhaust gas from the upper side of the machine body, it is easy to dissipate the exhaust gas to the outside.

In the present invention
A grain tank is provided side by side with the threshing device.
A grain raising device for transporting grains discharged from the threshing device to the grain tank is provided on the front side of the machine body of the grain tank and on the lateral side of the threshing device side.
The exhaust pipe extends above the grain raising device on the front side of the grain raising device, and an exhaust port is formed at the upper end thereof.
It is preferable that the exhaust port is opened above the grain raising device toward the threshing device side.

According to this configuration, the exhaust pipe extends above the grain raising device, and the exhaust port at the upper end is open toward the threshing device side, so that the exhaust gas discharged from the exhaust port is inside. It does not directly fall on the grain tank or the threshing device where the grains are present, and there is little risk of adversely affecting the grains.

In the present invention
An airframe frame that supports the entire traveling airframe and a vertical frame that is erected from the airframe and supports the rear side of the driving unit are provided.
It is preferable that the vertical frame supports the auxiliary equipment of the exhaust gas purification device.

According to this configuration, by supporting the auxiliary equipment of the exhaust gas purification device by utilizing the vertical frame provided for supporting the driving unit, for example, the auxiliary equipment can be attached to the engine or a device provided integrally with the engine. Compared to the case where it is supported, stable operation can be performed with less vibration.

In the present invention, an engine bonnet for partitioning the engine room is provided.
The driver's seat is supported at a portion of the upper portion of the engine bonnet located above the engine.
A protrusion protruding upward is formed at a portion of the upper portion of the engine bonnet located on the side side of the driver's seat.
It is preferable that the exhaust gas purification device is arranged in the protruding portion forming region corresponding to the protruding portion in the engine room.

According to this configuration, the exhaust gas purification device can be compactly deployed by using a position avoiding the driver's seat and a place having a relatively large space.

It is the whole left side view of the combine. It is the whole plan view of the combine. It is the whole right side view of the combine. It is a rear view of the combine with the rear exterior cover removed. It is a rear view of a combine. It is a side view which shows the piping structure for exhaust gas purification. It is a vertical sectional rear view of the exhaust gas purification device installation part. It is a side view around the engine. It is a rear view which shows the support structure of a fuel tank and a urea water tank. It is a top view of the grain tank and the surroundings. It is a perspective view which shows the engine and the equipment for exhaust gas treatment. It is a side view which shows the engine and the equipment for exhaust gas treatment. It is a top view of the exhaust pipe arrangement part. It is an exploded perspective view which shows the support structure of the exhaust pipe cover. It is a partial perspective view of the airframe frame. It is a perspective view which shows the structure for pipe support.

Hereinafter, an embodiment of the combine, which is an example of the harvester according to the present invention, will be described with reference to the drawings. In this embodiment, when defining the front-rear direction of the aircraft, it is defined along the traveling direction of the aircraft in the working state, and when defining the left-right direction of the aircraft, the left and right are defined as viewed in the traveling direction of the aircraft. .. That is, the direction indicated by the reference numeral (F) in FIGS. 1, 2, and 3 is the front side of the aircraft, and the direction indicated by the reference numeral (B) in FIGS. 1, 2, and 3 is the rear side of the aircraft. The direction indicated by the reference numeral (L) in FIG. 2 is the left side of the aircraft, and the direction indicated by the reference numeral (R) in FIG. 2 is the right side of the aircraft.

〔overall structure〕
Figures 1, 2 and 3 show a conventional combine as a harvester according to the present invention. This combine can harvest crops such as rice, wheat, buckwheat, soybeans, and corn.

This combine includes a traveling machine body 1 and a cutting section 2 located on the front side of the traveling machine body 1 and serving as a harvesting section for harvesting crops as the vehicle travels. The traveling machine body 1 includes a pair of left and right crawler type traveling devices 3, and a body frame 4 supported by the traveling device 3. The cutting section 2 is connected to the front portion of the machine frame 4 so as to be able to move up and down. A driving unit 6 is provided on the right side of the front portion of the traveling machine body 1, and a driving unit 7 is provided below the driving unit 6. At the rear of the traveling machine 1, a threshing device 8 for threshing harvested crops and a grain tank 9 for storing grains obtained by the threshing process are provided in a state of being lined up in the left-right direction of the machine.

As shown in FIGS. 1 and 2, the driving unit 6 is provided on the right side of the machine as one side in the left-right direction of the traveling machine 1 in a state where the rear part of the driving part 6 and the front part of the threshing device 8 overlap each other in the side view of the machine. At the same time, the threshing device 8 is provided on the left side of the traveling machine 1 as the other side in the left-right direction.

The driver unit 6 is provided with a driver's seat 10, a meter panel 11, a side panel 12, a steering lever 13, and the like. The driver unit 6 is provided with a cabin 5 that covers the space above the driver's seat 10. On the right side of the cabin 5, an entrance / exit 14 for passengers to enter and exit is provided. The side panel 12 is provided on the left lateral side of the driver's seat 10 on the side opposite to the entrance / exit 14. The side panel 12 is provided with a working clutch lever 16 and the like in addition to the main speed change lever 15.

The cutting unit 2 includes a pair of left and right dividers 17 that divide the planted crop into a cutting target and a non-cutting target, a scraping reel 18 that scrapes the planted crop, and a clipper-type cutting device 19 that cuts the planted crop. The auger 20 for collecting the cut crops toward the center in the cutting width direction and the feeder 21 for transporting the cut crops to the threshing device 8 are provided.

In the cutting section 2, the planted crops to be cut separated by the pair of left and right dividers 17 are scraped by the scraping reel 18. Then, the planted crops scraped by the scraping reel 18 are cut off by the cutting device 19. All of the cut crops that have been cut are gathered toward the center in the left-right direction by the auger 20 and transported to the handling room of the threshing device 8 by the feeder 21.

The threshing device 8 executes the threshing process of the transported harvested crops by the handling cylinder 22 provided in the handling chamber and the receiving net (not shown) provided on the lower side thereof. The sorting unit 23 provided in the lower part of the handling chamber sorts the threshed product that has leaked the net into grains and waste straw waste. The rear part of the body of the threshing device 8 is provided with a waste straw shredding device 24 that shreds the waste straw waste and discharges it downward and outward.

Although not shown, the waste straw shredding device 24 includes a rotary blade that rotates around the horizontal axis and a fixed blade that fixes the position, and shreds the waste straw waste discharged from the rear part of the threshing device 8. And discharge to the outside. Further, it is provided with a guide cover 24a for discharging the shredded processed material downward and outward. As shown in FIG. 2, the guide cover 24a is provided with the left side surface in a state along the front-rear direction and the right side surface in an oblique posture located on the right side toward the rear side of the machine body. With this configuration, the shredded processed material is guided to the center side in the lateral direction of the machine body.

As shown in FIGS. 1 and 2, the grains collected at the lower part of the threshing device 8 are placed on the upper part of the grain tank 9 on the front side of the machine body of the grain tank 9 and on the right lateral side of the threshing device 8. A bucket conveyor type threshing device 25 for carrying is provided. The grains obtained by the sorting process by the sorting unit 23 are transported to the outside on the right lateral side of the threshing device 8 by the first product transport screw 27, and then transported upward by the threshing device 25 to produce grains. It is supplied to the grain tank 9.

As shown in FIGS. 1 and 6, a second product reducing device 26 for reducing the second product such as paddy with branches collected at the lower part of the threshing device 8 to the front portion of the threshing device 8 is provided. The second product reducing device 26 is located between the threshing device 8 and the grain tank 9, and is provided on the right side of the threshing device 8 in a state of being lined up with the threshing device 25 in the left-right direction. The second product such as paddy with branches generated in the sorting unit 23 is transported to the outside on the right side of the threshing device 8 by the second product transport screw 28, and then the second product reducing device 26 transfers the second product to the sorting unit 23. It is reduced to the upper part of.

The rear part of the grain tank 9 is provided with a grain discharge device 29 for discharging the grains stored in the tank 9 to the outside. The grain discharge device 29 includes a vertical screw conveyor 29A that conveys grains upward, and a horizontal screw conveyor 29B that horizontally conveys grains from the upper end of the vertical screw conveyor 29A and discharges the grains from the discharge port at the tip. It has.

As shown in FIG. 4, the lower portion of the grain tank 9 is provided with a downwardly constricted inclined surface 30 when viewed in the front-rear direction of the machine body. At the lower end of the inclined surface 30 inside the grain tank 9, a bottom screw 32 for transporting stored grains to the transport start end of the vertical screw conveyor 29A in the grain discharge device 29 in the front-rear direction is provided. (See Fig. 3). Then, as shown in FIG. 4, the bottom screw 32 and the transport screw (not shown) of the vertical screw conveyor 29A are interlocked and connected via the belt transmission mechanism 31, and the grains are passed through the grain passage in the corner case 33. Grains can be transferred from the tank 9 to the vertical screw conveyor 29A.

The vertical screw conveyor 29A, together with the horizontal screw conveyor 29B, is rotatably supported by the machine frame 4 around the vertical axis core Y (rotary axis of the vertical screw conveyor 29A). As shown in FIG. 4, a rear side vertical frame 79 made of a square tubular material is provided on the left horizontal side of the vertical screw conveyor 29A. The lower end of the rear vertical frame 79 is fixed to the airframe frame 4. The lower end of the vertical screw conveyor 29A is rotatably supported by the corner case 33 around the vertical axis core Y, and the upper and lower middle portions are rotated on the upper portion of the square tubular rear side vertical frame 79 via the support bracket 35. It is supported freely. The lower end of the vertical screw conveyor 29A receives and is supported by the machine frame 4 via the corner case 33 and the rotating boss portion 36.

The grain tank 9 is rotatably supported by the machine frame 4 around the vertical axis core Y (rotary axis of the vertical screw conveyor 29A). The rear lower portion of the grain tank 9 is rotatably supported around the vertical axis core Y with respect to the rotating boss portion 36 via the corner case 33. The rear upper portion of the grain tank 9 is rotatably supported by the vertical screw conveyor 29A around the vertical axis core Y via the support bracket 37.

As shown in FIGS. 4 and 10, a drive mechanism 38 for rotating the grain discharge device 29 around the vertical axis core Y is provided on the outer peripheral portion of the corner case 33. The drive mechanism 38 engages a small-diameter gear (not shown) driven by the electric motor 39 with a large-diameter gear 40 provided on the outer peripheral portion of the vertical screw conveyor 29A to interlock the grain discharge device 29 with the vertical axis core. Rotate around Y.

A large load is applied to the rear vertical frame 79 to rotatably support the grain tank 9. Therefore, the rear side vertical frame 79 is supported by the reinforcing frame 41 extending laterally from the side wall 8a of the threshing device 8. As shown in FIG. 10, the reinforcing frame 41 is formed by bending a square tubular member into a substantially L shape in a plan view. Although not shown, the front-rear portion 41A of the reinforcing frame 41 is connected to the side wall 8a of the threshing device 8, and the lateral portion 41B of the reinforcement frame 41 is connected to the rear vertical frame 79. The reinforcing frame 41 is reinforced by connecting wide plate-shaped ribs 41C over the front-rear facing portion 41A and the laterally facing portion 41B.

As shown in FIGS. 6 and 7, an engine room 43 is formed in the driving portion 7 in a state of being partitioned by the engine bonnet 42. The engine bonnet 42 includes an upper surface 42a and a front vertical wall portion 42b, and the engine room 43 and the driving space are separated by the engine bonnet 42. The driver's seat 10 is supported above the upper surface 42a of the engine bonnet 42. As shown in FIG. 7, the protruding portion 42t protruding upward from the upper portion of the engine bonnet 42 located on the left lateral side of the driver's seat 10 is located below the side panel 12 and is located on the side panel 12 Makes up the frame of.

[Exhaust gas purification device]
As shown in FIG. 7, in the engine room 43, a diesel engine 44 (hereinafter, abbreviated as an engine), a radiator 45 for cooling the engine, and a radiator cooling fan 46 for generating cooling air supplied to the radiator 45 are provided. The first exhaust gas purification device 47 as another exhaust gas purification device that reduces particulate matter (PM) (Particulate Meter) contained in the exhaust gas of the engine 44, and the nitrogen oxide (NOx) contained in the exhaust gas of the engine 44. It is provided with a second exhaust gas purifying device 48 as an exhaust gas purifying device for reducing the amount of waste. The engine 44 is provided in a state of being located on the rear side of the front vertical wall portion 33b of the engine bonnet 42. The second exhaust gas purification device 48 is arranged in the protruding portion forming region corresponding to the protruding portion 42t of the engine bonnet 42 in the engine room 43.

The first exhaust gas purification device 47 includes a diesel particulate filter (DPF) (Diesel Particulate Filter) (not shown), which is a known technique for collecting diesel particulates contained in exhaust gas, and the diesel particulate filter (not shown). The particulate matter (PM) is reduced by passing the exhaust gas through the DPF).

The second exhaust gas purification device 48 uses SCR (Selective Catalytic Reduction) (selective catalytic reduction) to reduce nitrogen oxides (NOx) contained in the exhaust gas. To add an explanation, urea water, which is an example of a reducing agent, is injected into exhaust gas and hydrolyzed to generate ammonia, and the ammonia ( NH ₃ ) and nitrogen oxides (NOx) contained in the exhaust gas are chemically reacted. The nitrogen oxides contained in the exhaust gas are reduced by reducing the nitrogen ( N ₂ ) and water (H _{2 O).}

As shown in FIG. 8, the first exhaust gas purification device (DPF) 47 and the second exhaust gas purification device (SCR) 48 are supported on the upper portion of the engine 44 in a state of being integrally fixed with the engine 44.

As shown in FIG. 7, the first exhaust gas purification device 47 is provided at a position corresponding to the upper part of the engine 44 on the side of the engine 44 opposite to the side where the radiator cooling fan 46 exists, that is, on the left side of the machine body. There is.

As shown in FIG. 8, the second exhaust gas purification device 48 includes a large-diameter cylindrical device main body 48A extending in the front-rear direction and a small-diameter cylindrical exhaust relay portion 48B extending in the front-rear direction alongside the device main body 48A. I have. The apparatus main body 48A is provided on the upper side of the engine 44 and on the side of the first exhaust gas purification device 47, that is, on the left side of the machine body. That is, the device main body 48A of the second exhaust gas purification device 48 is located diagonally upward on the right side of the machine body with respect to the first exhaust gas purification device 47, and is located on the lower side of the side panel 12 in the engine room 43. It is provided with the longitudinal direction along the front-rear direction of the aircraft. The exhaust relay portion 48B of the second exhaust gas purification device 48 is located on the left side of the main body 48A and above the first exhaust gas purification device 47.

As shown in FIGS. 3 and 8, the position of the front end of the second exhaust gas purification device 48 in the front-rear direction of the machine is the same as or substantially the same as the position of the front end of the engine 44 in the front-rear direction of the machine in the side view of the machine. Is. Similar to the second exhaust gas purification device 48, the position of the front end portion of the first exhaust gas purification device 47 in the front-rear direction of the machine body is the front-rear position of the front end portion of the engine 44 in the side view of the machine body of the first exhaust gas purification device 47. It is provided at the same position as or substantially the same as the position in the direction. In both the first exhaust gas purification device 47 and the second exhaust gas purification device 48, the front-rear width along the front-rear direction of the machine body is substantially the same as the front-rear width of the engine 44.

As shown in FIG. 8, the first exhaust gas purification device 47 is provided with an exhaust inlet portion 49 for receiving exhaust gas from the engine 44 on the front side, and an exhaust outlet portion for discharging exhaust gas after purification treatment on the rear side. 50 is provided. The first exhaust gas purification device 47 receives the exhaust gas discharged from the exhaust gas portion provided on the upper front side of the machine body of the engine 44 from the exhaust inlet portion 49 on the front side, and causes the particulate matter to flow to the rear side of the machine body. An exhaust flow path is formed inside the apparatus so that the exhaust gas is discharged from the rear side after the reduction process of the above is executed.

The device main body 48A of the second exhaust gas purification device 48 is provided with an exhaust inlet portion 51 for receiving the exhaust gas on the front side and an exhaust outlet portion 52 for discharging the exhaust gas after the purification treatment on the rear side.

One end of the exhaust relay portion 48B of the second exhaust gas purification device 48 is communicated with the exhaust outlet portion 50 of the first exhaust gas purification device 47, and the other end is communicated with the exhaust inlet portion 51 of the device main body 48A. .. An injection nozzle 53 for ejecting urea water into the exhaust relay portion 48B is provided at the rear portion of the exhaust relay portion 48B.

The second exhaust gas purification device 48 flows the exhaust gas discharged from the first exhaust gas purification device 47 to the front side of the machine while mixing it with urea water through the exhaust relay unit 48B, and then supplies the exhaust gas to the device main body 48A. An exhaust flow path is formed so that the inside is flowed to the rear side of the machine body and then exhausted from the exhaust outlet portion 52.

As shown in FIG. 7, the first exhaust gas purification device 47 is provided below the exhaust relay unit 48B. The end of the first exhaust gas purification device 47 on the left-right direction opposite to the radiator cooling fan 46 protrudes to the outside of the engine room 43 from the end E on the left-right direction of the engine room 43 opposite to the radiator cooling fan 46. ing. Further, the end of the exhaust relay portion 48B on the left-right direction opposite to the radiator cooling fan 46 protrudes to the outside of the engine room 43 from the end E on the side opposite to the radiator cooling fan 46 in the left-right direction of the engine room 43. ing.

[Cover of exhaust gas purification device]
As shown in FIGS. 7 and 11, the purification device projecting portion 47t of the first exhaust gas purification device 47 projecting outward from the engine room 43, and the relay of the exhaust relay unit 48B projecting outward from the engine room 43. An outward protruding portion cover 54 (hereinafter, referred to as a protruding portion cover) that covers the upper side, the front side, and the lateral side of the portion protruding portion 48Bt is provided.

The projecting portion cover 54 includes a first cover portion 55 that covers the upper, front, and lateral sides of the relay portion projecting portion 48Bt, and a second cover that covers the upper, front, and lateral sides of the purifying device projecting portion 47t. It is provided with a part 56. The purifying device protruding portion 47t protrudes outward from the relay portion protruding portion 48Bt. The second cover portion 56 is provided so as to project outward from the first cover portion 55 to form a step in the left-right direction, and the first cover portion 55 and the second cover portion 56 are arranged vertically. The first cover portion 55 and the second cover portion 56 are formed separately.

As shown in FIG. 11, the first cover portion 55 includes a plate-shaped upper portion 55a that covers the upper part of the relay portion protruding portion 48Bt, a plate-shaped front side portion 55b that covers the front of the relay portion protruding portion 48Bt, and a relay portion. It is provided with a lateral portion 55c as a lateral cover portion that covers the lateral side of the protruding portion 48Bt. The upper portion 55a, the front portion 55b, and the lateral portion 55c are integrally connected. The lateral portion 55c is made of a punching metal 57 as a porous member.

The second cover portion 56 covers the step portion 58 in the left-right direction between the first cover portion 55 and the plate-shaped upper portion 56a that covers the upper part of the purifying device protruding portion 47t, and the front of the purifying device protruding portion 47t. It is provided with a plate-shaped front side portion 56b that covers the surface, and a lateral portion 56c as a lateral cover portion that covers the lateral side of the purifying device projecting portion 47t. The upper portion 56a, the front portion 56b, and the lateral portion 56c are integrally connected. The lateral portion 56c is made of a punching metal 57 as a perforated member.

The protrusion cover 54 is supported by a cabin support frame 59 fixed to the airframe frame 4. As shown in FIGS. 11 and 12, a cabin support frame 59 that is long in the vertical direction is provided to support the front-rear center portion of the left side surface of the cabin 5 from below, and the lower end portion of the cabin support frame 59 is connected to the airframe frame 4. Is supported. The front side portions 55b and 56b of the first cover portion 55 and the second cover portion 56 are bolted to the cabin support frame 59 via a support bracket (not shown). The upper portion 56a of the second cover portion 56 and the lower portion of the lateral portion 55c of the first cover portion 55 are bolted at a plurality of locations, and the first cover portion 55 and the second cover portion 56 are integrally connected. There is.

The rear side of each of the purifying device protruding portion 47t and the relay portion protruding portion 48 Bt is open. With this configuration, the high-temperature air around the exhaust relay portion 48B of the second exhaust gas purification device 48 and the first exhaust gas purification device 47 can be collected in a large number of holes formed in the lateral portions 55c and 56c and on the rear side. It can be discharged to the outside from the open area.

As described above, the injection nozzle 53 is provided at the rear of the exhaust relay portion 48B, that is, at the exhaust gas flow start end side. Urea water is injected from the injection nozzle 53 toward the inside of the exhaust relay portion 48B in which the exhaust gas is flowing. When urea water is injected into the exhaust gas, the urea water is hydrolyzed to produce ammonia. In the apparatus main body 48A, the ammonia (NH ₃ ) and the nitrogen oxide (NOx) contained in the exhaust gas chemically react and are reduced to _{nitrogen (N 2} ) and water (H _{2 O).} This reduces nitrogen oxides (NOx) in the exhaust gas. The urea water supplied to the second exhaust gas purification device 48 is stored in the urea water tank 60. The urea water tank 60 will be described later.

〔Exhaust pipe〕
As shown in FIGS. 6 and 7, an exhaust pipe 61 for discharging the purified exhaust gas to the outside is connected to a portion on the rear side of the machine body of the second exhaust gas purification device 48. As shown in FIG. 13, the exhaust pipe 61 is located behind the driver's seat 10 at the rear portion of the driver unit 6, the central portion in the front portion of the threshing device 8 in the left-right direction, and the front portion of the grain tank 9. The space surrounded by the central part in the left-right direction is extended upward.

As shown in FIGS. 6, 7 and 12, the exhaust pipe 61 includes a base end side pipe portion 61A connected to the upper side of the rear portion of the main body 48A of the second exhaust gas purification device 48 and a base end side pipe portion 61A. It is composed of an upper side pipe portion 61C connected to the outside air intake port 61B in a state of being formed.

As shown in FIG. 7, the exhaust pipe 61 extends from the front upper part of the grain raising device 25 to the upper side of the grain raising device 25, and an exhaust port 62 is formed at the upper end portion. The exhaust port 62 opens above the grain raising device 25 toward the threshing device 8. The exhaust pipe 61 is formed to be curved in a substantially S shape so as to avoid the ceiling portion of the cabin 5, and extends rearward and upward from a portion connected to the device main body 48A of the second exhaust gas purification device 48. Specifically, as shown in FIG. 7, the exhaust pipe 61 is bent toward the side of the machine body at the lower portion. Further, as shown in FIG. 6, the upper portion near the exhaust port 62 is bent toward the rear side of the machine body. That is, the exhaust pipe 61 is formed with bent portions k at each of the lower portion and the upper portion.

As shown in FIG. 13, a square recessed portion 65 formed by the front-rear surface 63 and the lateral surface 64 is formed at the left rear side portion of the cabin 5 so as to enter in a stepped shape in a plan view. .. On the upper side of the recessed portion 65 of the cabin 5, a reinforcing member 66 extending in an oblique direction across the front-rear surface 63 and the lateral surface 64 is provided. The engine bonnet 42 has a portion corresponding to the recessed portion 65 opened in the vertical direction in a plan view, and the exhaust pipe 61 faces upward through the open portion of the engine bonnet 42 and the space formed by the recessed portion 65. It is provided in a stretched state.

As shown in FIG. 12, the exhaust pipe 61 is supported by the rear side surface 68 of the cabin 5 as the rear portion of the driving unit 6 via the connecting bracket 67 at each of the lower side portion and the upper side portion. The connecting bracket 67 is formed by bending a strip-shaped steel material into a substantially U-shape, and the bent portion is formed in an arc shape along the outer peripheral surface of the exhaust pipe 61, and both end portions of an extension portion extending outward. A mounting portion 69 is formed on the surface. The connecting bracket 67 is integrally connected to the exhaust pipe 61 with the arcuate portion along the outer peripheral surface of the exhaust pipe 61, and the mounting portion 69 is bolted to the rear side surface 68 of the cabin 5. ..

The connecting bracket 67 located at the lower portion is bolted to the front-rear facing surface 63 of the recessed portion 65 of the rear side surface 68 of the cabin 5. The connecting bracket 67 located at the upper portion is bolted to the support member 70 extending from the reinforcing member 66 in an oblique posture.

The upper end portion 61C1 of the exhaust pipe 61 is formed in a hexagonal cylinder shape, and a half-split guide portion 61C2 obtained by dividing the hexagonal cylinder into two is provided at the tip end portion where the upper end portion 61C1 is open. The orientation of the guide portion 61C2 is set so as to open toward the threshing device 8.

[Exhaust pipe cover]
An exhaust pipe cover 71 that covers the outer side of the exhaust pipe 61 is provided from the lower part to the upper part of the exhaust pipe 61. As shown in FIGS. 7 and 12, the exhaust pipe cover 71 includes a lower cover 72 that covers the outer side of the lower part of the exhaust pipe 61, and an upper cover 73 that covers the outer side of the upper part of the exhaust pipe 61. .. In FIG. 6, the lower cover 72 is omitted in order to make it easier to understand the configuration of the exhaust pipe 61.

As shown in FIG. 14, the lower cover 72 has a left vertical wall portion 72a that covers the left side portion of the exhaust pipe 61 and a rear side that covers the rear side portion of the exhaust pipe 61 as vertical wall portions that surround the exhaust pipe 61. Dust enters the engine room 43 below from the periphery of the exhaust pipe 61 as an upper covering portion that includes the vertical wall portions 72b and closes the gap between the upper portions of the vertical wall portions 72a and 72b and the outer periphery of the exhaust pipe 61. The inclined covering portion 72c for preventing the above-mentioned is provided. The right side portion of the exhaust pipe 61 is covered by the lateral surface 64 of the cabin 5, and the front side portion of the exhaust pipe 61 is covered by the front-rear surface 63 of the cabin 5. That is, the lateral surface 64 and the front-rear surface 63 form a wall portion that surrounds the right side portion and the front side portion that are not covered by the lower cover 72 around the exhaust pipe 61.

The mounting portion 72a1 at the lower end of the left vertical wall portion 72a is bolted to the upper surface of the first cover portion 55 of the protruding portion cover 54. The mounting portion 72b1 at the right end of the rear vertical wall portion 72b is bolted to the lateral surface 64 of the recessed portion 65 of the rear side surface 68 of the cabin 5. The right end of the inclined covering portion 72c is bolted to the lateral surface 64, and the left and right intermediate portions of the inclined covering portion 72c are bolted to the connecting bracket 67. The inclined covering portion 72c is divided into a left side portion 72c1 covering the left side of the exhaust pipe 61 and a right side portion 72c2 covering the right side of the exhaust pipe 61 so that the inclined covering portion 72c can be easily attached from both the left and right sides of the exhaust pipe 61. ing. The left side portion 72c1 and the right side portion 72c2 are bolted at the right end portion.

As shown in FIGS. 11, 12, and 13, the upper cover 73 is made of a plate material having a substantially U-shaped cross section so as to cover the left side portion, the rear side portion, and the right side portion in the upper part of the exhaust pipe 61. The upper cover 73 has a shape that is bent in a substantially L shape in a side view so as to follow the bent shape of the exhaust pipe 61 toward the rear side of the machine body. The upper cover 73 is supported by the exhaust pipe 61. That is, the upper and lower intermediate portions of the upper cover 73 are bolted to the attached portion 74 provided on the outer peripheral portion of the exhaust pipe 61, and the upper portion of the upper cover 73 is bolted to the connecting bracket 67 located on the upper side. ..

[Tank support structure]
As shown in FIGS. 4, 6 and 9, a fuel tank 75 is provided between the threshing device 8 and the grain tank 9 at the rear end of the traveling machine 1. That is, the fuel tank 75 is provided in the space formed on the left outer side of the inclined surface 30 on the left side of the grain tank 9 between the threshing device 8 and the grain tank 9. The upper right side of the fuel tank 75 is provided in an inclined posture along the inclined surface 30 of the grain tank 9, and the narrow space between the threshing device 8 and the grain tank 9 is widely used in the vertical direction. Further, the fuel tank 75 extends long in the front-rear direction to a position as close as possible to the second product reduction device 26, in order to increase the capacity.

The fuel tank 75 is supported by the airframe frame 4 in a state where the lower end portion thereof enters below the upper surface 4a of the airframe frame 4. As shown in FIGS. 9 and 15, the airframe frame 4 is configured by connecting a plurality of front-rear frame bodies 4A and a plurality of lateral frame bodies 4B in a grid pattern. At the center of the rear end of the machine frame 4 in the left-right direction, a square saucer-shaped frame body 76 connected to the lateral frame bodies 4B on both front and rear sides, in other words, a box-shaped plate-shaped frame body 76 with an open upper portion is provided. There is. The bottom portion 76a of the plate-shaped frame body 76 is provided in a state of being dropped downward from the upper surface 4a of the machine body frame 4. The fuel tank 75 is supported by the plate-shaped frame body 76 in a state where the lower end thereof enters below the upper surface 4a of the body frame 4. The fuel tank 75 is pressed from above by the band 77 while being supported by the plate-shaped frame body 76 to prevent the fuel tank 75 from floating. By the way, the bottom portion 76a of the plate-shaped frame body 76 is located below the upper surface 4a of the body frame 4, but the ground clearance is secured so as not to come into contact with the ground even in a wet field.

As shown in FIGS. 4, 6 and 9, the urea water tank 60 is provided so as to be vertically adjacent to the fuel tank 75. Therefore, the urea water tank 60 is provided on the right side (an example of one side in the left-right direction) of the threshing device 8. A support frame 78 extending upward while passing by the side of the fuel tank 75 is provided. The support frame 78 includes a rear vertical frame 79, front and rear columns 80 extending in the vertical direction on each of the front and rear sides of the fuel tank 75, and a mounting table 81 extending over them. That is, the side of the fuel tank 75 corresponds to the front side and the rear side of the fuel tank 75. The urea water tank 60 is supported by the support frame 78 in a state of being located above the fuel tank 75.

To add an explanation, the mounting table 81 is composed of a rectangular plate that is wide in the front-rear direction and narrow in the left-right direction. A support column 80 on the front side from the machine frame 4 is provided at a position located at the center in the left-right direction of the mounting table 81 on the front side of the fuel tank 75. The upper end of the support column 80 on the front side is bolted to the mounting table 81.

On the left side of the mounting table 81 on the rear side of the fuel tank 75, a support column 80 on the rear side from the fuselage frame 4 is erected. Further, a rear vertical frame 79 is located on the right side of the mounting table 81 on the rear side of the fuel tank 75. The rear support column 80 and the rear side vertical frame 79 are provided so as to be distributed to the left and right sides so as to avoid the fuel filler port 82 of the fuel tank 75. The rear support column 80 is located on the lower left side of the mounting table 81, and the upper end thereof is bolted to the lower surface of the mounting table 81. The rear vertical frame 79 is provided so as to pass through a portion on the right lateral side of the mounting table 81 and extend long in the vertical direction. Then, the mounting base 81 is bolted to the brackets 83 attached to both the front and rear sides of the support column 80.

The urea water tank 60 is placed on the upper side of the mounting table 81 and pressed by the fastener 84 to prevent it from coming off. In this way, the mounting table 81 on which the urea water tank 60 is mounted and supported is stably supported by the body frame 4 by the rear vertical frame 79 and the two columns 80.

An electric urea water pump 85 that sends the urea water stored in the urea water tank 60 to the consumption point is provided. The urea water pump 85 sends the urea water in the urea water tank 60 to the injection nozzle 53 provided in the exhaust relay portion 48B of the second exhaust gas purification device 48.

The urea water tank 60 is supported on the rear side of the support frame 78, and the urea water pump 85 is supported on the front side of the support frame 78. Specifically, as shown in FIG. 6, a support plate 86 in a vertical orientation is provided on the front side of the mounting table 81 in a fixed state, and a urea water pump 85 is attached to the support plate 86. The urea water tank 60 is mounted and supported on the rear side of the mounting table 81.

As shown in FIG. 6, a pipe 87 for connecting the urea water tank 60 and the second exhaust gas purification device 48 is provided while passing along the side wall 8A on the right side of the threshing device 8. The pipe 87 is a feed pipe 88 that sends from the urea water tank 60 to the injection nozzle 53 via the urea water pump 85, and the urea water sent by the urea water pump 85 that is not consumed by the injection nozzle 53. It is provided with a return pipe 89 for returning the urea water to the urea water tank 60. The pipe 87 is provided with another type of pipe, for example, a pipe for supplying an antifreeze agent for preventing freezing of urea water, in addition to the feed pipe 88 and the return pipe 89. You may.

As shown in FIG. 6, a support member 90 for supporting the pipe 87 is provided on the side wall 8A on the right side of the threshing device 8. The pipe 87 is provided so as to pass along the upper part of the side wall 8A on the right side of the threshing device 8 and is supported by the support member 90. The pipe 87 is arranged so as to pass over a high position so as to pass above the second product reduction device 26.

As shown in FIG. 16, the support member 90 includes a mounting plate 91 that is long in the front-rear direction and a pipe support portion 92 that is provided in the front-rear direction. The mounting plate 91 is provided with connecting portions 93 at a plurality of locations spaced back and forth. The support member 90 is fixed to the side wall 8A on the right side of the threshing device 8 by bolting a plurality of connecting portions 93. The front end portion of the mounting plate 91 is fixed to the front side vertical frame 94 erected from the machine body frame 4.

The pipe 87 extending in the front-rear direction of the machine body is supported by a pipe support portion 92 as a pipe support member by a plurality of fasteners 95 provided at appropriate intervals. As shown in FIG. 16, the pipe support portions 92 are provided at two front and rear positions to support a plurality of holders 96 formed in a substantially triangular shape in the front-rear direction and a plurality of holders 96 arranged vertically. It is equipped with a tool 97. The support tool 97 in the pipe support portion 92 on the rear side is extended upward to form a horizontal posture mounting portion 98.

As described above, the grain tank 9 is provided so as to be swingable around the vertical axis Y at the rear. The grain tank 9 is provided with a hook-engagement type locking mechanism (not shown) for holding the front side in the normal working position (position shown in FIG. 2) retired toward the inside of the machine. .. As shown in FIGS. 6 and 16, a fixed-side engaging portion 99 with which the lock mechanism is engaged is provided on the upper portion of the front-side vertical frame 94. Although not shown, the locking mechanism can engage the fixed-side engaging portion 99 to hold the grain tank 9 in position when the grain tank 9 is in the normal working position. The lock mechanism is configured so that it can be unlocked from the outside on the lateral side. The front side vertical frame 94 has a large supporting strength for holding the grain tank 9 in the normal working position.

As shown in FIG. 6, the position where the urea water pump 85 is provided and the position where the second exhaust gas purification device 48 is provided are set so that the heights in the vertical direction are substantially the same. The pipe 87 is provided in a state of extending substantially linearly along the front-rear direction. The front side portion of the pipe 87 is provided so as to pass above the connecting portion between the front side vertical frame 94 and the threshing device 8. With this configuration, even if the fastener 95 may come off due to long-term vibration of the machine body, there is a disadvantage that the pipe 87 hangs down and comes into contact with the second reduction device 26. I try not to cause it.

The fuel filler port 82 of the fuel tank 75 is provided on the rear side of the fuel tank 75, and the water supply port 100 of the urea water tank 60 is provided on the rear side of the urea water tank 60. That is, as shown in FIG. 6, the fuel filler port 82 of the fuel tank 75 projects obliquely from the upper portion of the rear wall portion 75a of the fuel tank 75 toward the rear upper part of the airframe. An inclined surface 60b in a rear-down posture is formed on the upper portion of the rear wall portion 60a of the urea water tank 60 so as to be located downward toward the rear side. The water supply port 100 projects in a direction orthogonal to the inclined surface 60b, that is, toward the rear and upper directions. The refueling port 82 and the water supply port 100 are each closed by lids 101 and 102 that can be opened and closed manually.

At least one of the fuel tank 75 and the urea water tank 60 is provided with an identification mark for distinguishing between the two. Specifically, the lid 101 of the fuel filler port 82 is made of a black member, the lid 102 of the water supply port 100 is made of a blue member, and the target (fuel, urea water) to be supplied is the lid body. It is displayed by embossing as character information directly represented on the surfaces of 101 and 102. In this way, the refueling port 82 and the water supply port 100 can be distinguished. That is, different colors of the lids 101 and 102 and representing character information correspond to the identification marks, respectively.

As shown in FIGS. 2, 5 and 10, a rear exterior cover 103 that covers the grain tank 9, the fuel tank 75, and the urea water tank 60 from the rear side is provided. The rear exterior cover 103 includes a right side cover portion 103A located on the right side of the machine body and a left side cover part 103B located on the left side of the machine body. The right side cover portion 103A is formed in a substantially L shape in a plan view, and is provided in a state of covering the rear and lateral sides in the right rear space of the grain tank 9 and in a fixed position state.

The right end of the left cover 103B is swingably opened and closed around the upper and lower shaft cores with respect to the right cover 103A via a hinge 104. A pair of upper and lower position holding mechanisms 105 that can hold the position in the closed state and can be held and released by a manual opening operation are provided on the left side (swinging end side) of the left side cover portion 103B.

Although not shown, the position holding mechanism 105 engages with the engaged member 106 on the fixed side by an elastic force to hold the position, and manually engages the locking member against the elastic force. It is an elastic engagement type locking mechanism with a well-known structure that can release the engagement and release the position holding state. As shown in FIG. 10, the fixed-side engaged member 106 with which the position-holding mechanism 105 engages is provided on the rear-side vertical frame 79.
In FIGS. 4 and 6, the description of the rear exterior cover 103 is omitted in order to make it easier to understand the internal configuration.

The injection nozzle 53 provided in the exhaust relay portion 48B of the second exhaust gas purification device 48 is controlled by a control device (not shown) so as to change and adjust the injection amount of urea water. That is, a NOx measuring device 107 (an example of an auxiliary device of the exhaust gas purification device) for measuring the concentration of nitrogen oxides (NOx) contained in the exhaust gas is provided, and the control device is based on the measurement information of the NOx measuring device 107. , The injection nozzle 53 is controlled so that the amount of urea water ejected becomes an appropriate amount.

As shown in FIG. 7, the NOx measuring device 107 is located in the flow path of the exhaust gas, and outputs detection information corresponding to the concentration of nitrogen oxides (NOx), and information from the detection unit 107a. It is composed of a control circuit unit 107b that calculates the concentration of nitrogen oxides (NOx) based on. The detection unit 107a is arranged so as to face the exhaust flow path in the exhaust relay unit 48B. Although not described in detail, the control circuit unit 107b has various electronic components mounted on the wiring board, and is liable to cause a problem when strong vibration is continuously applied. Therefore, the control circuit unit 107b is provided at a location where there is little vibration.

That is, it is located on the rear side of the machine body of the engine 44, is erected from the body frame 4, and is provided with a vertical frame 108 that supports the rear side of the driving unit 6. A support bracket 109 is fixed to the upper and lower intermediate portions of the vertical frame 108, and a control circuit portion 107b is attached to the support bracket 109.
The support bracket 109 may support an auxiliary device of the second exhaust gas purification device 48, which is different from the NOx measuring device 107.

As shown in FIGS. 4, 6, 10 and 16, a work table 110 is provided above the pipe 87 between the threshing device 8 and the grain tank 9. The left end of the workbench 110 is mounted and supported by a support member 111 fixed to the side wall 8a of the threshing device 8, and the right end is mounted and supported by the mounting portion 98 of the rear pipe support 92. It is connected with bolts. The workbench 110 is for a worker to get on top of the workbench 110 during maintenance work such as cleaning the inside of the threshing device 8.

[Another Embodiment]
(1) In the above embodiment, the second exhaust gas purifying device 48 is located on the lower side of the side panel 12 and in a state in which the longitudinal direction is along the front-rear direction of the machine body, on the side opposite to the existing side of the radiator cooling fan 46. Although the configuration is mounted and supported on the upper part of the engine 44, various configurations as described in the following (1-1) to (1-4) can be adopted instead of this configuration.
(1-1) A configuration in which the second exhaust gas purification device 48 is supported on the engine 44 by a separate frame.
(1-2) The second exhaust gas purification device 48 may be provided on the lower side of the driver's seat 10.
(1-3) The second exhaust gas purification device 48 may be provided on the existing side of the radiator cooling fan 46.
(1-4) The second exhaust gas purification device 48 may be provided in a posture in which the longitudinal direction faces up and down.
In short, the second exhaust gas purification device 48 may be provided in the engine room 43, and the arrangement configuration may be variously changed.
Further, in the above embodiment, the exhaust relay portion 48B of the second exhaust gas purification device 48 is provided in a state where the exhaust relay portion 48B of the second exhaust gas purification device 48 is partially detached from the lower side portion of the side panel 12 to the side on the left side of the machine body. The exhaust relay portion 48B of the above may be provided on the lower side of the side panel 12.

(2) In the above embodiment, the entire second exhaust gas purification device 48 is provided in the engine room 43, but only a part of the second exhaust gas purification device 48 is housed in the engine room 43. It may be configured to be.

(3) In the above embodiment, the exhaust pipe 61 extends upward between the rear part of the operating unit 6 and the front part of the threshing device 8, and the exhaust port 62 is provided in a state of opening toward the threshing device 8 side. However, instead of this configuration, the direction of the exhaust port 62 may be changed, such as a form in which the exhaust port 62 opens rearward or a form in which the exhaust port 62 opens toward the front. Further, the exhaust pipe 61 extends rearward on the lower side of the traveling machine body 1, or the exhaust pipe 61 extends rearward along a high position between the threshing device 8 and the grain tank 9. May be good.

(4) In the above embodiment, the purifying device projecting portion 47t and the relay portion projecting portion 48Bt are each provided with a projecting portion cover 54 covering the upper side, the front side, and the lateral outer side. Instead of, the configuration as described in the following <4-1> to <4-3> may be used.
<4-1> Only the first exhaust gas purification device 47 protrudes outward from the engine room 43, the exhaust relay portion 48B is housed in the engine room 43, and the protruding portion cover 54 protrudes from the purification device 47 of the first exhaust gas purification device 47. A configuration that covers the portion 47t.
<4-2> Only the exhaust relay portion 48B protrudes outward from the engine room 43, the first exhaust gas purification device 47 is housed in the engine room 43, and the protruding portion cover 54 is the relay portion protruding portion 48Bt of the exhaust relay portion 48B. The configuration that covers.
<4-3> The first exhaust gas purification device 47 and the exhaust relay portion 48B both project outward from the engine room 43, and the protruding portion cover 54 is not provided.

(5) In the above embodiment, the lateral portions 55c and 56c of the projecting portion cover 54 are shown to be composed of the punching metal 57 as a porous member, but the porous member includes a net-like member and a lattice-like shape. It can be carried out in various forms such as members. Further, instead of the one made of such a perforated member, the one made of a plate-shaped member in which the lateral portions 55c and 56c are closed may be used.

(6) In the above embodiment, the rear side of each of the purifying device protruding portion 47t and the relay portion protruding portion 48Bt is open, but each of the purifying device protruding portion 47t and the relay portion protruding portion 48Bt, or any one of them. One rear side may be covered with a protrusion cover 54.

(7) In the above embodiment, the projecting portion cover 54 is configured to include the first cover portion 55 and the second cover portion 56, and the second cover portion 56 projects outward from the first cover portion 55 in the left-right direction. In the state where the steps are formed in the above, the structure is provided so that they are lined up one above the other.
<7-1> The first cover portion 55 and the second cover portion 56 are arranged one above the other without having a step.
<7-2> A configuration in which the protrusion cover 54 is formed as a whole without being divided.

(8) In the above embodiment, the left end of the first exhaust gas purification device 47 partially protrudes from the left end of the engine room 43 to the outside of the engine room 43, but instead of this configuration. The first exhaust gas purifying device 47 may be provided so as to be housed in the engine room 43.

(9) In the above embodiment, the urea water tank 60 is provided at the rear end of the machine body, but various configurations such as a structure in which the urea water tank 60 is provided in the front part of the machine body and a structure in which the front and rear middle parts are provided are adopted. be able to.

(10) In the above embodiment, as an identification mark for distinguishing both the fuel tank 75 and the urea water tank 60, the colors of the lids 101 and 102 are different, and the identification mark is represented by character information. However, the present invention is not limited to this, and various changes can be made. For example, the colors of the lids 101 and 102 may be different, or character information may be represented. Further, the lids 101 and 102 may be distinguished by the shape, material, size and the like. As the character information, instead of embossing, it may be simply printed, or a label may be attached. The character information may be provided on either one of the lids 101 and 102, or may be provided on both.

(11) In the above embodiment, the first exhaust gas purification device 47 is provided in the vicinity of the engine 44, but the present invention is not limited to this configuration, and the installation position can be appropriately changed and arranged. For example, it may be provided between the threshing device 8 and the grain tank 9, or may be provided below the grain tank.

The present invention can be applied to various harvesters such as a self-removing combine harvester, a corn harvester, a carrot harvester, and a radish harvester, in addition to a conventional combine harvester.

1 traveling aircraft 4 aircraft frame
6 Driving unit 8 Threshing device 9 Grain tank 10 Driver's seat 12 Side panel 14 Entrance / exit 25 Grain raising device 42 Engine bonnet
42t protruding part 43 engine room 44 engine 46 radiator cooling fan 47 another exhaust gas purification device 47t purification device protruding part 48 exhaust gas purification device 48A device body 48B exhaust relay part 48Bt relay part protruding part 49 exhaust inlet part 50 exhaust outlet part 51 exhaust Inlet 52 Exhaust outlet 54 Dust-proof cover 55c Horizontal cover 56c Horizontal cover 61 Exhaust pipe 62 Exhaust port 107 Auxiliary equipment 108 Vertical frame E Engine room end

Claims (26)

The traveling machine body is provided with a driver unit having a driver's seat, an engine room having an engine located below the driver's seat, and an exhaust gas purification device for reducing nitrogen oxides contained in the exhaust gas of the engine.
Another exhaust gas purification device that reduces particulate matter contained in the exhaust gas of the engine is interposed between the engine and the exhaust gas purification device.
The exhaust gas purification device and the other exhaust gas purification device are provided in the engine room.
The exhaust gas purifying device is provided so as to be located on the side opposite to the side where the radiator cooling fan exists with respect to the engine.
The other exhaust gas purification device is provided at a position corresponding to the upper part of the engine.
The exhaust gas purification device includes an exhaust relay unit that mixes the exhaust gas discharged from the other exhaust gas purification device and urea water, and a device main body unit that reduces the exhaust gas discharged from the exhaust gas purification device.
The apparatus main body is provided on the upper side of the engine in a state of being located on the side opposite to the side where the radiator cooling fan exists with respect to the engine.
The exhaust relay unit is provided on the upper side of the other exhaust gas purification device and on the side opposite to the existing side of the radiator cooling fan with respect to the device main body unit.
The portion of the exhaust gas purification device on the left-right direction opposite to the radiator cooling fan protrudes outward from the end portion of the engine room on the left-right direction opposite to the radiator cooling fan.
A harvester provided with a cover covering the upper, front, and lateral sides of the protruding portion of the exhaust gas purifying device that protrudes outward from the engine room. The traveling machine has a driver unit having a driver's seat, an engine room having an engine located below the driver's seat, an exhaust gas purification device for reducing nitrogen oxides contained in the exhaust gas of the engine, and exhaust gas of the engine. It is equipped with another exhaust gas purification device that reduces the particulate matter contained in the engine.
The exhaust gas purification device is provided in the engine room,
The exhaust gas purifying device is provided on the upper side of the engine and on the side opposite to the side where the radiator cooling fan exists with respect to the engine.
The other exhaust gas purification device is provided above the engine and on the side opposite to the side where the radiator cooling fan exists.
The exhaust gas purification device includes an exhaust relay unit that mixes the exhaust gas discharged from the other exhaust gas purification device and urea water, and a device main body unit that reduces the exhaust gas discharged from the exhaust gas purification device.
The exhaust relay portion is provided above the other exhaust gas purification device and on the side opposite to the side where the radiator cooling fan exists with respect to the device main body portion.
A harvester in which each of the other exhaust gas purification device, the device main body, and the exhaust relay is provided in a posture that intersects the alignment direction of the engine and the radiator cooling fan. The traveling machine body is provided with a driver unit having a driver's seat, an engine room having an engine located below the driver's seat, and an exhaust gas purification device for reducing nitrogen oxides contained in the exhaust gas of the engine.
The exhaust gas purification device is provided in the engine room,
A threshing device that threshes the harvested crops, a grain tank that is provided side by side with the threshing device, and an exhaust that is connected to a location on the rear side of the machine body of the exhaust gas purification device to discharge purified exhaust gas to the outside. The tube and the grain-raising device located on the front side of the machine body of the grain tank and on the lateral side of the threshing device side and transport the grains discharged from the threshing device to the grain tank. Be prepared,
The driving unit is provided on one side of the traveling machine in the left-right direction, and the threshing device is provided in the left-right direction of the traveling machine, with the rear part of the driving unit and the front part of the threshing device overlapping in a side view of the machine body. Provided on the other side
The exhaust pipe extends upward between the rear part of the driving unit and the front part of the threshing device, and extends above the grain raising device on the front side of the threshing device. , An exhaust port is formed at the upper end,
The exhaust port is a harvester that opens above the grain raising device toward the threshing device side. The harvester according to any one of claims 1 to 3, wherein the exhaust gas purification device is provided on the engine. The harvester according to claim 4, wherein the exhaust gas purification device is mounted and supported on the upper part of the engine. The engine is provided so as to be located behind the front vertical wall portion of the engine room.
Any one of claims 1 to 5 in which the position of the front end of the exhaust gas purifying device in the front-rear direction of the machine is the same as or substantially the same as the position of the front end of the engine in the front-rear direction of the machine. Harvester described in section. The driver's seat is provided above the engine.
A boarding / alighting gate for passengers to enter and exit is provided on the side of the driver's seat.
A side panel is provided on the side of the driver's seat on the side opposite to the entrance.
The harvester according to any one of claims 1 to 6, wherein the exhaust gas purifying device is provided in a portion of the engine room on the lower side of the side panel in a state in which the longitudinal direction is along the front-rear direction of the machine body. .. Another exhaust gas purification device that reduces particulate matter contained in the exhaust gas of the engine is interposed between the engine and the exhaust gas purification device.
The harvester according to any one of claims 1 to 7, wherein the other exhaust gas purification device is provided in the engine room. The harvester according to claim 8, wherein the other exhaust gas purifying device is provided on the side of the engine opposite to the side where the radiator cooling fan exists. The portion of the other exhaust gas purification device on the left-right direction opposite to the radiator cooling fan protrudes to the outside of the engine room from the end portion of the engine room on the left-right direction opposite to the radiator cooling fan. The harvester according to claim 9. The harvester according to claim 10, further comprising a cover covering the upper, front, and lateral sides of the purifying device projecting portion protruding outward from the engine room among the other exhaust gas purifying devices. Of the cover, the lateral cover portion that covers the purifying device protruding portion from the lateral side is composed of a porous member.
The harvester according to claim 11, wherein the rear of the protruding portion of the purification device is open. The harvester according to any one of claims 9 to 12, wherein the other exhaust gas purification device is supported by the engine. The other exhaust gas purification device is provided at a position corresponding to the upper part of the engine.
The exhaust gas purification device includes an exhaust relay unit that mixes the exhaust gas discharged from the other exhaust gas purification device and urea water, and a device main body unit that reduces the exhaust gas discharged from the exhaust gas purification device.
The apparatus main body is provided on the upper side of the engine in a state of being located on the side opposite to the side where the radiator cooling fan exists with respect to the engine.
Claims 9 to 13 are provided such that the exhaust relay portion is located on the upper side of the other exhaust gas purification device and on the side opposite to the existing side of the radiator cooling fan with respect to the device main body portion. The harvester according to any one of the above items. The portion of the exhaust relay portion on the left-right direction opposite to the radiator cooling fan protrudes to the outside of the engine room from the end portion of the engine room on the left-right direction opposite to the radiator cooling fan. The harvester according to claim 14. The harvester according to claim 15, further comprising a cover that covers the upper, front, and lateral sides of the relay portion protruding portion of the exhaust relay portion that protrudes outward from the engine room. Of the cover, the lateral cover portion that covers the lateral side of the relay portion protruding portion is composed of a porous member.
The harvester according to claim 16, wherein the rear of the relay portion protruding portion is open. The other exhaust gas purification device is provided below the exhaust relay unit.
The portion of the other exhaust gas purification device on the left-right direction opposite to the radiator cooling fan protrudes to the outside of the engine room from the end portion of the engine room on the left-right direction opposite to the radiator cooling fan. ,
The portion of the exhaust relay portion on the left-right direction opposite to the radiator cooling fan protrudes to the outside of the engine room from the end portion of the engine room on the left-right direction opposite to the radiator cooling fan. The harvester according to any one of claims 14 to 17. Of the other exhaust gas purification devices, the purifying device projecting portion protruding outward from the engine room, and the exhaust relay section above, forward, and above the relay section projecting portion protruding outward from the engine room, and The harvester according to claim 18, which is provided with a cover that covers laterally. Of the cover, the protruding portion of the purification device and the lateral cover portion covering the lateral side of the protruding portion of the relay portion are made of a porous member.
The harvester according to claim 19, wherein the rear of the relay portion protruding portion is open. The cover includes a first cover portion that covers the upper side and the lateral side of the relay portion protruding portion, and a second cover portion that covers the lateral side of the purifying device protruding portion.
The purifying device protruding portion protrudes outward from the relay portion protruding portion,
A claim in which the first cover portion and the second cover portion are arranged vertically in a state in which the second cover portion projects outward from the first cover portion to form a step in the left-right direction. Item 19. The harvester according to item 19 or 20. The other exhaust gas purification device is provided with an exhaust inlet portion for receiving the exhaust gas from the engine on the front side and an exhaust outlet for discharging the exhaust gas after the purification treatment on the rear side.
The exhaust gas purification device is provided with an exhaust inlet portion on the front side for receiving exhaust gas supplied from the other exhaust gas purification device via the exhaust relay unit, and an exhaust outlet on the rear side for discharging the exhaust gas after purification treatment. The harvester according to any one of claims 14 to 20, wherein the harvester comprises. Equipped with a threshing device to thresh the harvested crops
The driving unit is provided on one side of the traveling machine in the left-right direction, and the threshing device is provided in the left-right direction of the traveling machine, with the rear part of the driving unit and the front part of the threshing device overlapping in a side view of the machine body. Provided on the other side
An exhaust pipe that discharges the purified exhaust gas to the outside is connected to a location on the rear side of the body of the exhaust gas purification device.
The harvester according to any one of claims 1 to 22, wherein the exhaust pipe extends upward between the rear part of the driving part and the front part of the threshing device. A grain tank is provided side by side with the threshing device.
A grain raising device for transporting grains discharged from the threshing device to the grain tank is provided on the front side of the machine body of the grain tank and on the lateral side of the threshing device side.
The exhaust pipe extends above the grain raising device on the front side of the grain raising device, and an exhaust port is formed at the upper end thereof.
The harvester according to claim 23, wherein the exhaust port is open above the grain raising device toward the threshing device side. An airframe frame that supports the entire traveling airframe and a vertical frame that is erected from the airframe and supports the rear side of the driving unit are provided.
The harvester according to any one of claims 1 to 24, wherein an auxiliary machine of the exhaust gas purification device is supported on the vertical frame. An engine bonnet for partitioning the engine room is provided.
The driver's seat is supported at a portion of the upper portion of the engine bonnet located above the engine.
A protrusion protruding upward is formed at a portion of the upper portion of the engine bonnet located on the side side of the driver's seat.
The harvester according to any one of claims 1 to 25, wherein the exhaust gas purifying device is arranged in a protruding portion forming region corresponding to the protruding portion in the engine room.

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