WO2021020519A1

WO2021020519A1 - Working vehicle and combine

Info

Publication number: WO2021020519A1
Application number: PCT/JP2020/029280
Authority: WO
Inventors: 日野真和; 丹後芳史; 余先峰
Original assignee: 株式会社クボタ
Priority date: 2019-07-31
Filing date: 2020-07-30
Publication date: 2021-02-04
Also published as: CN114206095B; CN114206095A

Abstract

A working vehicle A comprises: an engine 6; an engine output shaft 35 which is the output shaft of the engine 6; a bearing case 44 that holds a bearing 45 and covers at least a portion of the engine output shaft 35; and an exhaust gas treatment device 33 that performs a cleaning treatment on exhaust gas discharged from the engine 6. The engine output shaft 35 is supported by the bearing case 44 via the bearing 45. An output rotating body 50 that integrally rotates with the engine output shaft 35 is attached to a portion of the engine output shaft 35, the portion being on the opposite side of the bearing 45 from the engine 6. The working vehicle A further comprises a device support part 7 supported by the bearing case 44. The exhaust gas treatment device 33 is supported by the device support part 7.

Description

Work vehicle and combine

The present invention relates to a work vehicle including an engine and an exhaust treatment device for purifying the exhaust gas discharged from the engine.

The present invention also relates to a combine equipped with an engine.

The present invention also relates to a combine.

[1] As the above-mentioned work vehicle, for example, the one described in Patent Document 1 is already known. This work vehicle (“combine” in Patent Document 1) includes a device support portion (“support member” in Patent Document 1) that supports an exhaust treatment device (“exhaust gas purification device” in Patent Document 1).

[2] As the above-mentioned combine, for example, the one described in Patent Document 2 is already known. This combine was threshed by a harvesting unit (“cutting and transporting unit” in Patent Document 2) for cutting the planted grain stalks in the field, a threshing device for threshing the harvested grain stalks cut by the cutting section, and a threshing device. It is equipped with a grain tank for storing grains.

In addition, this combine is equipped with a driving unit at the front right of the fuselage. And the engine is arranged below the driving part.

[3] For example, in the combine disclosed in Patent Document 3, an engine is provided above the threshing device, and a cooling device (“radiator” in the document) for cooling the engine is provided outside the body of the engine. ing.

[4] For example, in the combine disclosed in Patent Document 3, a cooling device (“radiator” in the document) for cooling the engine is provided on the lateral side of the machine body with respect to the threshing device. A deck (“workbench” in the literature) used for maintenance of the cooling device is provided, and the operator can easily perform maintenance work on the cooling device from the deck. Further, a fuel tank is provided on the side opposite to the side where the cooling device is located across the threshing device, and the operator can replenish fuel from a fuel filler port provided at the upper part of the fuel tank.

Japanese Patent Application Laid-Open No. 2019-79 Japanese Patent Application Laid-Open No. 2017-51168 Japanese Patent Application Laid-Open No. 2019-76034

[1] The issues corresponding to the background technology [1] are as follows.
In the work vehicle described in Patent Document 1, the engine and the device support portion are separately supported by the body frame. Then, the exhaust treatment device is supported by the device support portion in a state of being separated from the engine. Therefore, the space required for arranging the engine, the exhaust treatment device, and the device support portion tends to be relatively large.

An object of the present invention is to provide a work vehicle that can easily accommodate an engine, an exhaust treatment device, and a device support portion in a compact manner.

[2] Issues corresponding to the background technology [2] are as follows.
In this combine, it is conceivable to place the engine above the threshing device. As a result, the engine is stably supported by the threshing device.

Here, if the engine is exposed, it is assumed that dust will accumulate on the engine. Therefore, it is conceivable to provide a cover that covers the engine from the upper side, the front side, the rear side, the left side, and the right side.

However, in a configuration in which the engine is covered with such a cover, it is difficult for the operator to access the engine. Therefore, the maintenance work of the engine tends to require a relatively large amount of labor.

An object of the present invention is to provide a combine that facilitates engine maintenance work and prevents dust from accumulating on the engine.

[3] Issues corresponding to the background technology [3] are as follows.
By the way, in order to secure sufficient engine output, it is indispensable to improve the cooling performance of the cooling device. The cooling device tends to become larger as the cooling performance is improved, but it is not preferable that the entire body becomes larger as the cooling device becomes larger, and it is desirable that the body is made as compact as possible. In order to improve the cooling performance while avoiding the increase in size of the airframe as much as possible, it is necessary to devise the shape of the cooling device and the arrangement of the cooling device.

An object of the present invention is to provide a combine that improves engine cooling performance while avoiding an increase in the size of the entire airframe.

[4] The issues corresponding to the background technology [4] are as follows.
By the way, in the combine disclosed in Patent Document 3, since it is necessary for the operator to remove the side cover when refueling the fuel tank, the refueling work becomes troublesome. In order to eliminate such inconvenience, it is conceivable to provide a fuel filler port on the side cover, but since the fuel filler port must be located higher than the full tank level of the fuel tank, the operator can carry the fuel. It is possible that you may be forced to refuel while lifting the car high. In this case, it is conceivable to provide a deck for refueling in the vicinity of the fuel filler port, but if the deck is provided only for refueling, the structure becomes complicated and it is disadvantageous in terms of cost.

An object of the present invention is to provide a combine with a simple structure and improved workability.

[1] The solutions corresponding to the problem [1] are as follows.
The features of the present invention are the engine, the engine output shaft which is the output shaft of the engine, the bearing case which holds the bearing and covers at least a part of the engine output shaft, and purifies the exhaust discharged from the engine. An exhaust treatment device for processing is provided, and the engine output shaft is supported by the bearing case via the bearing, and the portion of the engine output shaft opposite to the engine with respect to the bearing. An output rotating body that rotates integrally with the engine output shaft is attached to the bearing case, and the device support portion supported by the bearing case is provided, and the exhaust treatment device is supported by the device support portion. ..

According to the present invention, the device support portion is supported by the bearing case. Further, the exhaust treatment device is supported by the bearing case via the device support portion. As a result, the exhaust treatment device and the device support portion are likely to be located in the vicinity of the engine. Therefore, the space required for arranging the engine, the exhaust treatment device, and the device support portion tends to be relatively small.

Therefore, according to the present invention, it is possible to realize a work vehicle in which the engine, the exhaust treatment device, and the device support portion can be easily housed in a compact manner.

Further, in the present invention, the flywheel attached to the part of the engine output shaft on the engine side with respect to the bearing is arranged between the engine and the bearing case, and the flywheel is mounted. It is preferable that the bearing case includes a flywheel housing for accommodating the flywheel housing and is supported by the flywheel housing.

According to this configuration, the exhaust treatment device is supported by the flywheel housing via the device support portion and the bearing case. Here, in general, the flywheel housing has a relatively high strength. Therefore, the exhaust treatment device is stably supported by the flywheel housing.

Further, in the present invention, the bearing case is located between the holding portion for holding the bearing and the holding portion and the flywheel housing in the extending direction of the engine output shaft, and at least one of the engine output shafts. It is preferable that the case portion covers the portion, the case portion has a shape that expands toward the side closer to the flywheel housing, and the device support portion is supported by the case portion. Is.

According to this configuration, the exhaust treatment device is likely to be arranged at a position biased toward the engine with respect to the bearing. Therefore, the exhaust treatment device is more likely to be closer to the engine than the configuration in which the exhaust treatment device is arranged at a position deviated from the bearing on the side opposite to the engine. Therefore, it is easy to compactly accommodate the engine and the exhaust treatment device.

Further, in the present invention, it is preferable that the device support portion is supported on the upper portion of the case portion.

When the engine is mounted and supported on the engine frame, the distance between the case and the engine frame in the vertical direction of the machine tends to be relatively narrow. Therefore, in a configuration in which the device support portion is supported at the lower part of the case portion, it tends to be necessary to take measures such as raising the support position of the engine so that the device support portion or the exhaust treatment device does not interfere with the engine frame. This increases the manufacturing cost.

Here, according to the above configuration, the device support portion is supported on the upper portion of the case portion. Therefore, even when the engine is mounted and supported on the engine frame, the device support portion or the exhaust treatment device does not interfere with the engine frame. Therefore, it is possible to avoid an increase in manufacturing cost as described above.

Further, in the present invention, the exhaust treatment device is arranged in a state in which the longitudinal direction of the exhaust treatment device intersects the extending direction of the engine output shaft in a plan view, and the device support portion is the first support. It has a portion and a second support portion different from the first support portion, and has a position of the first support portion and a position of the second support portion in the longitudinal direction of the exhaust treatment device. It is preferable that they are different.

According to this configuration, the first support portion and the second support portion are supported by the bearing case, so that the device support portion is supported by the bearing case at at least two positions in the longitudinal direction of the exhaust treatment device. Will be done. As a result, the device support is stably supported as compared with the configuration in which the device support is supported by the bearing case only at one position in the longitudinal direction of the exhaust treatment device.

Further, in the present invention, the endless rotating body wound around the output rotating body and a tension mechanism for applying tension to the endless rotating body are provided, and the tension mechanism is in contact with the endless rotating body. It has a ring and an arm that supports the tension wheel, and it is preferable that the arm is supported by the device support portion in a swingable state.

According to this configuration, the arm is supported by the device support. This eliminates the need to provide a dedicated member to support the arm. Therefore, the manufacturing cost tends to be lower than that in the case where a dedicated member is provided to support the arm.

Further, in the present invention, the first endless rotating body that is wound around the output rotating body and extends in a predetermined direction from the output rotating body, and the first endless rotating body that is wound around the output rotating body and that is wound around the output rotating body. A second endless rotating body that is arranged on the engine side and extends from the output rotating body in a direction different from the predetermined direction, and a second endless rotating body that extends along the second endless rotating body and the second endless rotating body. It is preferable that the regulating portion includes a regulating portion that regulates the displacement of the second endless rotating body in a direction orthogonal to the rotation direction, and the regulating portion is supported by the device supporting portion.

According to this configuration, the regulation part is supported by the device support part. This eliminates the need to provide a dedicated member to support the regulatory section. Therefore, the manufacturing cost tends to be lower than in the case where a dedicated member is provided to support the regulation portion.

[2] The solutions corresponding to the problem [2] are as follows.
The features of the present invention are a cutting unit for cutting the planted grain stalks in the field, a grain removal device for removing the harvested grain stalks cut by the cutting section, and a grain removal device located above the grain removal device and by the grain removal device. A grain tank for storing deciduous grains, an engine located above the grain removal device, an engine located behind the grain tank, and an engine located on one side and outside of the engine in the left-right direction. An exhaust treatment device that processes the exhaust discharged from the engine, an exhaust cover that covers the exhaust treatment device from one side in the left-right direction of the machine, a radiator located on the outside of the other side in the left-right direction of the engine, and the engine. It is located on the outside of the other side in the left-right direction of the aircraft, covers the cooling fan that cools the radiator, and covers the radiator and the cooling fan from the other side in the left-right direction of the aircraft, and prevents dust from entering the radiator and the cooling fan. A dustproof cover and a bonnet surrounding the engine are provided, the bonnet has a top plate located above the engine, and the grain tank and the engine are adjacent to each other in the front-rear direction. It is arranged, and a rear opening for communicating the inside and outside of the bonnet is provided at the rear end of the bonnet.

According to the present invention, the operator can access the engine through the rear opening. Therefore, engine maintenance work is easy.

Moreover, according to the present invention, the upper part of the engine is covered with a top plate. Also, the front of the engine is covered with a grain tank. The left and right sides of the engine are covered with an exhaust cover and a dustproof cover.

Also, when the combine is running, the dust floating in the air will move to the rear side relative to the engine. Therefore, it is difficult for dust to enter the bonnet through the rear opening.

Therefore, according to the present invention, dust is unlikely to accumulate on the engine.

That is, according to the present invention, it is possible to realize a combine that facilitates engine maintenance work and prevents dust from accumulating on the engine.

Further, in the present invention, the engine is located on the rear side of the engine and is provided with a deck that can be used as a scaffold by an operator, and the engine and the deck are arranged so as to be adjacent to each other in a plan view. It is preferable that the top plate is configured so that the state can be changed between an open state in which the upper part of the bonnet is opened and a closed state in which the upper part of the bonnet is closed.

According to this configuration, the worker can use the deck as a scaffold and stand stably near the bonnet. Moreover, according to this configuration, the operator can access the engine from the upper part of the bonnet by opening the top plate. Therefore, according to this configuration, the maintenance work of the engine becomes easy.

Further, in the present invention, the bonnet has a base portion for supporting the top plate, and the front end portion of the top plate can swing around the first swing axis along the left-right direction of the machine body. The top plate is supported by the base portion, and the top plate is configured so that the state can be changed between the open state and the closed state by swinging around the first swing axis. , It is preferable to provide a maintenance mechanism for maintaining the top plate in the open state.

According to this configuration, the state of the top plate can be easily changed between the open state and the closed state simply by swinging the top plate. Moreover, according to this configuration, the top plate can be maintained in an open state by the maintenance mechanism. Therefore, during engine maintenance work, the operator does not need to support the top plate with his / her own hands. This facilitates engine maintenance work.

Further, in the present invention, the bonnet has a frame body that supports the top plate and surrounds the engine, and the frame body is located at the rear end portion in the upper part of the frame body and is located on the left and right sides of the machine body. It includes a first frame extending in the direction, and it is preferable that the first frame is removable.

According to this configuration, the operator can easily access the engine by removing the first frame. This facilitates engine maintenance work.

Further, in the present invention, the bonnet has a frame body that supports the top plate and surrounds the engine, and the frame body includes a second frame located above the exhaust treatment device. It is preferable that the second frame is removable.

According to this configuration, when assembling the exhaust treatment device to the engine, the assembling work can be performed with the second frame removed. Therefore, it is possible to avoid a situation in which the assembly work of the exhaust treatment device is hindered by the second frame.

Further, in the present invention, the engine output shaft includes an engine output shaft extending in the left-right direction of the machine body and a transmission mechanism for extracting power from the engine output shaft, and the engine output shaft is said to be from the engine. It extends toward the exhaust cover side, and at least a part of the transmission mechanism is arranged at a position sandwiched between the engine and the exhaust cover, and the exhaust cover is located below the exhaust cover. It has an opening / closing portion and a main body portion that supports the opening / closing portion, and the upper end portion of the opening / closing portion is in a state where it can swing around a second swing shaft core along the front-rear direction of the machine body. It is preferable that it is supported by the main body.

According to this configuration, the operator can easily access the transmission mechanism by swinging the opening / closing part in the direction away from the transmission mechanism. This facilitates the maintenance work of the transmission mechanism.

Further, in the present invention, an intake unit that is connected to the engine and supplies air to the engine is provided, the intake unit is arranged so as to pass through the rear opening, and the intake unit is the said. It is preferable to have an air cleaner located behind the bonnet.

According to this configuration, the air cleaner will be placed outside the bonnet. Therefore, it is easy to reduce the size of the bonnet as compared with the case where the air cleaner is arranged inside the bonnet. As a result, the airframe tends to be compact.

Further, in the present invention, it is preferable that the front end portion of the bonnet is provided with a front opening for communicating the inside and outside of the bonnet.

According to this configuration, the bonnet has a front opening and a rear opening. As a result, hot air is less likely to be trapped in the bonnet. As a result, the cooling performance of the engine is improved.

[3] The solutions corresponding to the problem [3] are as follows.
The combine according to the present invention includes a threshing device for threshing the harvested product, an engine provided above the threshing device, a cooling device provided on the lateral outer side of the body of the engine to cool the engine, and the cooling device. The cooling device case and the case for the cooling device are provided, and the cooling device and the case for the cooling device are extended below the upper end portion of the threshing device.

According to the present invention, cooling devices are provided across the engine and the threshing device on the lateral outer side of each of the engine and the threshing device. The configuration in which the cooling device is housed and supported in the cooling device case enables a configuration in which various devices and accessories related to the cooling device are collectively supported in the cooling device case. Further, by extending the cooling device and the case for the cooling device below the upper end of the threshing device, the size of the cooling device can be increased while avoiding interference with the threshing device. That is, a combine that improves the cooling performance of the engine while avoiding an increase in the size of the entire body is realized.

In the present invention, it is preferable that an engine bonnet covering the engine is provided, and the upper portion of the cooling device case is supported by the frame of the engine bonnet.

With this configuration, the frame of the engine bonnet is also used as a support member for the cooling device and the case for the cooling device. Therefore, the support structure of the cooling device and the cooling device case is simplified as compared with the configuration in which the cooling device and the dedicated support member for supporting the cooling device case are provided.

In the present invention, it is preferable that a first bracket extending laterally and outwardly from the upper part of the threshing device is provided, and the lower part of the cooling device case is supported by the first bracket.

In this configuration, the first bracket extends from the upper part of the threshing device to the lateral outside of the machine body, so that interference between the cooling device and the case for the cooling device and the threshing device can be easily avoided and the cooling performance can be achieved. Can be easily improved.

In the present invention, a fuel tank provided below the cooling device, a second bracket extending laterally outward from the grain removing device to support the fuel tank, and a lateral outside of the first bracket. It is preferable that a vertical frame for connecting the end portion and the lateral outer end portion of the second bracket is provided.

With this configuration, the fuel tank is located below the cooling device, so the space below the cooling device is usefully utilized. In other words, since the space above the fuel tank secures as much space as possible for the cooling device in the vertical direction, it is possible to increase the size of the cooling device while avoiding the increase in size of the entire airframe. Further, the support structure of the cooling device case and the fuel tank is integrally formed by the configuration in which the lateral outer end of the first bracket and the lateral outer end of the second bracket are connected by a vertical frame. .. As a result, the support structure becomes stronger as compared with the configuration in which the cooling device case is supported only by the first bracket and the fuel tank is supported only by the second bracket.

In the present invention, a reserve tank for storing the cooling water of the cooling device is provided, and the reserve tank is supported by the upper end portion of the cooling device case while being located above the cooling device case. Is suitable.

With this configuration, the reserve tank is supported by the upper end of the cooling device case, so the support structure of the reserve tank is simplified. Further, in this configuration, since the reserve tank is located above the cooling device, the cooling water is smoothly supplied from the reserve tank to the cooling device.

In the present invention, an air cleaner for removing dust from the combustion air supplied to the engine is provided, and the air cleaner is supported by the rear wall of the cooling device case while being located behind the cooling device case. It is preferable to have.

With this configuration, the cooling device case can also be used as a support member for the air cleaner. Therefore, the support structure of the air cleaner is simplified as compared with the configuration in which the support member dedicated to the air cleaner is provided.

[4] The solutions corresponding to the problem [4] are as follows.
The combine according to the present invention includes a dehulling device for degraining the harvested product, a cooling device provided on the lateral side of the machine for the dehulling device and cooling the engine, and the cooling device on the lateral side of the machine for the dehulling device. Below, a fuel tank provided vertically aligned with the cooling device, a first deck provided above the fuel tank and used for maintenance work on the cooling device, and ascending / descending from the ground to the first deck. A ladder for performing the above is provided, and a refueling pipe for refueling the fuel tank is extended toward the first deck, and the refueling port of the refueling pipe is described from the first deck. It is characterized in that it is configured so that it can be refueled.

According to the present invention, a first deck is provided above the rear of the fuel tank so that refueling is possible, and a ladder for raising and lowering is provided on the first deck. Therefore, the worker can climb the ladder with the fuel carrying can and refuel the fuel filler port with the carrying can placed on the first deck. As a result, the workability of refueling is improved as compared with the configuration of the fuel tank in the combine disclosed in Patent Document 3. Further, since the first deck is used for the maintenance work for the cooling device, the first deck is used for both the maintenance work for the cooling device and the refueling work. As a result, a combine with improved workability is realized with a simple configuration without providing a dedicated deck for refueling.

In the present invention, the engine is provided above the threshing device next to the inside of the body of the cooling device, is provided behind the engine, and is provided with a second deck used for maintenance work on the engine. It is preferable that the cooling device is extended below the lower end of the engine, and the first deck is arranged at a position lower than that of the second deck.

According to this configuration, since the second deck is provided behind the engine, the operator can perform maintenance work on the engine using the second deck. In addition, since the first deck is located lower than the second deck, the operator can cool the engine from the first deck in response to the cooling device extending below the lower end of the engine. Maintenance work on the lower part of the device can be easily performed.

In the present invention, it is preferable that an air cleaner that removes dust from the combustion air supplied to the engine is provided behind the upper part of the cooling device in a state where it overlaps with the first deck in a plan view.

This configuration makes it easier for workers to perform maintenance work on the air cleaner on the first deck.

In the present invention, it is preferable that the refueling pipe is extended to a position higher than the first deck through the range of the width of the fuel tank in the lateral direction of the cooling device.

According to this configuration, the cooling device and the fuel tank are arranged one above the other, and the refueling pipe does not deviate from the range of the width of the fuel tank in the lateral direction of the cooling device, and is more than the first deck. It is extended to a high position. Therefore, fuel can be replenished from the first deck to the refueling port of the refueling pipe without complicating the structure of the refueling pipe.

In the present invention, the operating unit, the cabin covering the operating unit, the air conditioner for air-conditioning the inside of the cabin, the condenser for the air conditioner, the case for the cooling device that houses and supports the cooling device, and the above. It is preferable that the cooling device case is covered from the lateral outside of the machine body and the cooling device case is provided with a dustproof cover that is supported so as to be openable and closable, and the dustproof cover is supported by the condenser.

With this configuration, the condenser is cooled together with the cooling device by the configuration in which the condenser is supported by the dustproof cover. Therefore, as compared with the configuration in which the cooling device and the condenser are cooled separately, it is not necessary to provide a fan or the like in the condenser, and the cooling configuration can be simplified and made compact. In addition, the configuration in which the condenser is provided on the lateral side of the fuselage with respect to the cooling device makes it possible to easily configure the condenser to be cooled by receiving outside air while avoiding hot air from the engine or the like, improving the air conditioning efficiency of the air conditioner. To do.

In the present invention, it is preferable that a third deck that can project laterally and outwardly from the fuel tank is provided at a position lower than the fuel tank.

With this configuration, the operator can easily perform maintenance work on the lateral outer part of the cooling device from the third deck.

In the present invention, it is preferable that an engine auxiliary machine is provided between the ladder and the fuel tank below the first deck.

With this configuration, the space below the first deck is effectively utilized. Further, since the engine auxiliary machine is provided behind the fuel tank, it is easy to route the fuel supply path between the fuel tank and the engine. Further, since the engine auxiliary equipment is arranged between the ladder and the fuel tank, the possibility of foreign matter coming into contact with the engine auxiliary equipment when turning the combine, for example, is reduced.

It is a figure which shows the 1st Embodiment (hereinafter, the same is true until FIG. 8), and is the left side view of the combine. It is a left side view which shows the structure of the power transmission system of a combine. It is a transmission system diagram which shows the power transmission of a combine. It is a left side view which shows the structure of the device support part and the like. It is a vertical sectional rear view which shows the structure of a bearing case and the like. It is an exploded perspective view which shows the structure of the device support part and the like. It is a top view which shows the structure around a bearing case. It is a front view which shows the structure of the regulation part and the like. It is a figure which shows the 2nd Embodiment (hereinafter, the same until FIG. 19), and is the left side view of the combine. It is a top view of the combine. It is a rear view which shows the structure of a bonnet and the like. It is a top view which shows the structure of a bonnet and the like. It is a vertical sectional rear view which shows the structure of an exhaust cover and the like. It is a left side view which shows the structure of an exhaust cover and the like. It is an exploded perspective view which shows the structure of a bonnet and the like. It is a perspective view which shows the structure of a bonnet and the like. It is a vertical right side view which shows the structure of the top plate and the like. It is a right side view which shows the structure of a bonnet and the like. It is a front view which shows the structure of a bonnet and the like. It is a figure which shows the 3rd Embodiment (hereinafter, the same applies to FIG. 28), and is the right side view of a combine. It is a top view of the combine. It is a rear view which shows the positional relationship of a cooling device and a fuel tank with respect to an engine and a threshing device. It is a top view which shows the positional relationship of a cooling device, a fuel tank, a 1st deck and a 2nd deck with respect to an engine and a threshing device. It is a right side view which shows the positional relationship of a cooling device, a fuel tank, a 1st deck and a 2nd deck. FIG. 4 is a sectional view taken along line XXV-XXV of FIG. 24 showing a cooling device. It is a side view which shows the cooling device from the lateral inside viewpoint of the machine body. It is the right side view of the combine which shows the state which the ladder was lowered. It is explanatory drawing of the side view which shows the state which the ladder is locked.

The embodiment for carrying out the present invention will be described with reference to the drawings. In the following description, unless otherwise specified, the direction of the arrow F shown in FIGS. 1, 2, 4, 6, and 7 is defined as “front” and the direction of arrow B is defined as “rear”. Let the direction of the arrow L shown in FIGS. 5 to 8 be "left" and the direction of the arrow R be "right". Further, the direction of the arrow U shown in FIGS. 2 and 4 is defined as “up”, and the direction of the arrow D is defined as “down”.

[Overall composition of combine harvester]
As shown in FIG. 1, a harvesting and transporting unit 1, a cabin 2, an operating unit 3, a threshing device 4, and a grain tank 5 are used in a normal combine harvester A (corresponding to a "working vehicle" according to the present invention). The engine 6, the left and right front wheels 8, and the left and right rear wheels 9 are provided.

The cutting and transporting unit 1 cuts the crops in the field and transports them backward. The crop is, for example, a planted culm such as rice, but may be soybean, corn, or the like. The driving unit 3 is covered with a cabin 2. The threshing device 4 threshes the harvested product cut by the cutting transport unit 1. The harvest is, for example, a harvested culm.

The grain tank 5 stores the grains obtained by the threshing process in the threshing device 4. The rear wheel 9 is configured to be steerable. The front wheels 8 are configured to be unsteerable and are rotationally driven by the power of the engine 6. A screw conveyor type grain discharge device 18 is provided on the left side of the grain tank 5. The grain discharge device 18 conveys the grains stored in the grain tank 5 to the outside of the machine body.

The cutting and transporting unit 1 includes a cutting unit 11 and a feeder 12. The cutting section 11 cuts the planted grain culms in the field and gathers the cut grain culms toward the central portion in the cutting width direction. The feeder 12 transports the culms that have been cut and gathered in the center toward the threshing device 4 at the rear of the machine body.

The threshing device 4 is located at the center position on the left and right sides of the machine. The grain tank 5 is located on the front side of the machine body above the threshing device 4. The engine 6 is located on the rear side of the machine body above the threshing device 4. That is, the threshing device 4 and the grain tank 5 are provided side by side, and the grain tank 5 and the engine 6 are provided side by side.

Further, the threshing device 4 has an engine frame EF (see FIG. 2). The engine frame EF is located above the threshing device 4. The engine 6 is supported by the engine frame EF. That is, the engine 6 is supported on the upper part of the threshing device 4.

The outer sides of the threshing device 4 on both the left and right sides are covered with the exterior cover 17. The grain tank 5 is formed in a downward constriction shape in a lateral view. A lateral feed discharge screw 5A is provided on the bottom of the grain tank 5 in a lateral direction of the machine body.

As shown in FIG. 1, the lower part of the fuselage is provided with left and right main frames 20 extending in the front-rear direction of the fuselage. The left and right front wheels 8 and the left and right rear wheels 9 are provided so as to be located on the outer side in the left-right direction of each of the left and right main frames 20. The left and right main frames 20 are supported by the left and right front wheels 8 and the left and right rear wheels 9.

Waste straw waste and the like are discharged to the rear of the machine body via the shredding processing device 23 located at the rear part of the machine body.

Further, as shown in FIGS. 1 and 2, the combine A includes a deck 10 and a ladder 14. Both the deck 10 and the ladder 14 are provided at the rear of the combine A.

Deck 10 is located behind the engine 6. The deck 10 can be used by the operator as a scaffold.

The ladder 14 extends up and down. The worker can climb the deck 10 by climbing the ladder 14.

Further, as shown in FIG. 2, the combine A includes an exhaust pipe 32 and an exhaust treatment device 33. The exhaust gas discharged from the engine 6 flows to the exhaust treatment device 33. Then, the exhaust gas treatment device 33 purifies the exhaust gas. More specifically, the exhaust treatment device 33 has a DPF (not shown). Then, the exhaust treatment device 33 reduces the particulate matter contained in the exhaust gas by the DPF. In addition, "DPF" is an abbreviation for a diesel particulate filter.

That is, the combine A includes an exhaust treatment device 33 that purifies the exhaust gas discharged from the engine 6.

The exhaust gas purified by the exhaust gas treatment device 33 passes through the exhaust pipe 32 and is discharged from the opening at the rear end of the exhaust pipe 32.

[About transmission structure]
As shown in FIGS. 2 and 3, the combine A includes an engine output shaft 35 and an output rotating body 50. The engine output shaft 35 is an output shaft of the engine 6. Further, the engine output shaft 35 extends in the left-right direction of the machine body. Then, the engine output shaft 35 projects from the engine 6 toward the left side of the machine body.

The output rotating body 50 is attached to the engine output shaft 35. Then, the output rotating body 50 rotates integrally with the engine output shaft 35. Further, the output rotating body 50 has a first rotating body 51 and a second rotating body 52.

As shown in FIGS. 4 and 5, the second rotating body 52 is located on the engine 6 side with respect to the first rotating body 51. Further, the first rotating body 51 and the second rotating body 52 are integrally formed.

As shown in FIGS. 2 and 3, the combine A includes a counter shaft 55, a first endless rotating body 63 (corresponding to the “endless rotating body” according to the present invention), and a second endless rotating body 64.

The counter shaft 55 is located in front of the engine output shaft 35. Further, the counter shaft 55 extends in the left-right direction of the machine body. That is, the counter shaft 55 extends parallel to the engine output shaft 35. The counter shaft 55 is provided so as to extend to the left portion of the machine body and the right side portion of the machine body.

The first endless rotating body 63 is wound around the first rotating body 51. That is, the first endless rotating body 63 is wound around the output rotating body 50. The first endless rotating body 63 extends forward and downward (corresponding to the "predetermined direction" according to the present invention) from the first rotating body 51. Further, the first endless rotating body 63 is configured to transmit the power from the first rotating body 51 to the counter shaft 55.

That is, the combine A includes a first endless rotating body 63 that is wound around the output rotating body 50 and extends in a predetermined direction from the output rotating body 50.

Further, as shown in FIG. 3, the combine A is provided with a transmission belt 56 for discharge. The discharge transmission belt 56 is configured to transmit the power from the counter shaft 55 to the lateral feed discharge screw 5A. Further, the lateral feed discharge screw 5A transmits the power received from the discharge transmission belt 56 to the grain discharge device 18.

Further, the combine A includes a third endless rotating body 59 and a speed change mechanism TM. The third endless rotating body 59 is configured to transmit the power from the counter shaft 55 to the transmission mechanism TM. The speed change mechanism TM shifts the power received from the third endless rotating body 59 and transmits it to the left and right front wheels 8.

With the above configuration, the power of the engine 6 is transmitted to the lateral feed discharge screw 5A and the grain via the engine output shaft 35, the first rotating body 51, the first endless rotating body 63, the counter shaft 55, and the discharge transmission belt 56. It is transmitted to the discharge device 18. As a result, the lateral feed discharge screw 5A and the grain discharge device 18 are driven.

Further, the power of the engine 6 is transmitted to the transmission mechanism TM via the engine output shaft 35, the first rotating body 51, the first endless rotating body 63, the counter shaft 55, and the third endless rotating body 59. As a result, the left and right front wheels 8 are driven.

Further, as shown in FIGS. 2 and 3, the combine A includes a handling cylinder drive shaft 36 and a handling cylinder transmission device 39.

The handling barrel drive shaft 36 is located below and behind the engine output shaft 35. Further, the handling barrel drive shaft 36 extends in the left-right direction of the machine body. That is, the handling barrel drive shaft 36 extends in parallel with the engine output shaft 35.

The handling cylinder transmission device 39 is supported on the back of the threshing device 4. Further, the handling cylinder drive shaft 36 is connected to the handling cylinder transmission device 39. Then, the handling cylinder transmission device 39 shifts the power received from the handling cylinder drive shaft 36 in two stages up and down, and transmits the power to the handling cylinder 21A in the threshing device 4.

Further, as shown in FIG. 4, the second endless rotating body 64 is wound around the second rotating body 52. That is, the second endless rotating body 64 is wound around the output rotating body 50. Then, the second endless rotating body 64 extends rearwardly and downwardly (corresponding to a "direction different from a predetermined direction" according to the present invention) from the second rotating body 52. Further, the second endless rotating body 64 is configured to transmit the power from the second rotating body 52 to the handling cylinder drive shaft 36. As shown in FIG. 7, the second endless rotating body 64 is arranged on the engine 6 side with respect to the first endless rotating body 63.

That is, the combine A is wound around the output rotating body 50, is arranged on the engine 6 side with respect to the first endless rotating body 63, and extends from the output rotating body 50 in a direction different from the predetermined direction. It has a moving body 64.

Further, as shown in FIGS. 2 and 3, the combine A is provided with a transmission mechanism 40 for shredding processing. The shredding processing transmission mechanism 40 is configured to transmit the power from the handling cylinder drive shaft 36 to the shredding processing device 23.

Further, the combine A is provided with a fourth endless rotating body 42. Further, the threshing device 4 has a swing sorting device (not shown) and a blower (not shown). Although detailed description is omitted, the fourth endless rotating body 42 is configured to transmit the power from the handling cylinder drive shaft 36 to the cutting unit 11, the feeder 12, the swing sorting device, the blower, and the like. ing.

With the above configuration, the power of the engine 6 is transmitted to the handling cylinder 21A via the engine output shaft 35, the second rotating body 52, the second endless rotating body 64, the handling cylinder drive shaft 36, and the handling cylinder transmission device 39. To. As a result, the handling cylinder 21A is driven.

Further, the power of the engine 6 is transmitted to the shredding processing device 23 via the engine output shaft 35, the second rotating body 52, the second endless rotating body 64, the handling cylinder drive shaft 36, and the shredding processing transmission mechanism 40. Will be done. As a result, the shredding processing device 23 is driven.

Further, the power of the engine 6 is transmitted to the cutting section 11, the feeder 12, and the shaking via the engine output shaft 35, the second rotating body 52, the second endless rotating body 64, the handling cylinder drive shaft 36, and the fourth endless rotating body 42. It is transmitted to the dynamic sorting device, the blower, etc. As a result, the cutting unit 11, the feeder 12, the swing sorting device, the blower, and the like are driven.

As shown in FIGS. 2 to 4, the combine A includes a tension mechanism 13 and a threshing clutch 62. The tension mechanism 13 applies tension to the first endless rotating body 63. The threshing clutch 62 can apply tension to the second endless rotating body 64.

The threshing clutch 62 is configured to be operable by a clutch operating mechanism (not shown). Then, the threshing clutch 62 turns on / off the power transmission via the second endless rotating body 64 by changing the tension of the second endless rotating body 64. As a result, the threshing clutch 62 turns on / off the power transmission from the engine 6 to the handling cylinder 21A, the shredding processing device 23, the cutting unit 11, the feeder 12, the swing sorting device, the blower, and the like.

[Structure related to bearing case]
As shown in FIGS. 5 to 7, the engine output shaft 35 has a first output shaft 24 and a second output shaft 25. The first output shaft 24 and the second output shaft 25 are arranged on the same axis. Further, the first output shaft 24 and the second output shaft 25 rotate integrally around the rotation shaft core P1.

Further, the first output shaft 24 protrudes to the left from the engine 6. Further, the second output shaft 25 extends in the left-right direction of the machine body and is located to the left of the first output shaft 24.

As shown in FIG. 5, the combine A includes a flywheel 26 and a damper 27. The flywheel 26 is attached to the left end of the first output shaft 24. Then, the flywheel 26 rotates integrally with the first output shaft 24.

The damper 27 is attached to the right end of the second output shaft 25. Then, the damper 27 rotates integrally with the second output shaft 25.

The flywheel 26 and the damper 27 are connected to each other. Further, the flywheel 26 and the damper 27 rotate integrally.

With the above configuration, the first output shaft 24, the flywheel 26, the damper 27, and the second output shaft 25 rotate integrally around the rotation shaft core P1. The damper 27 is configured to absorb the torque fluctuation of the first output shaft 24.

Further, as shown in FIG. 5, the combine A includes a flywheel housing 43, a bearing case 44, and a bearing 45. The flywheel housing 43 is arranged on the left side of the engine 6 and is supported by the engine 6. Further, the flywheel housing 43 accommodates the flywheel 26 and the damper 27.

The bearing case 44 is arranged on the left side of the flywheel housing 43. That is, the flywheel housing 43 is arranged between the engine 6 and the bearing case 44. The bearing case 44 is bolted to the left end of the flywheel housing 43. That is, the bearing case 44 is supported by the flywheel housing 43.

The bearing case 44 covers the middle portion of the second output shaft 25 in the left-right direction of the machine body. Further, the bearing case 44 holds the bearing 45.

That is, the combine A includes a bearing case 44 that holds the bearing 45 and covers at least a part of the engine output shaft 35.

More specifically, the bearing case 44 has a holding portion 44a and a case portion 44b. The holding portion 44a is located at the left end portion of the bearing case 44. Further, the holding portion 44a holds the bearing 45.

The case portion 44b is located between the holding portion 44a and the flywheel housing 43 in the extending direction of the engine output shaft 35. The case portion 44b covers the intermediate portion in the left-right direction of the machine body on the second output shaft 25.

That is, the bearing case 44 is located between the holding portion 44a that holds the bearing 45 and the holding portion 44a and the flywheel housing 43 in the extending direction of the engine output shaft 35, and covers at least a part of the engine output shaft 35. It has a case portion 44b and.

Then, as shown in FIG. 5, the case portion 44b has a shape that expands toward the side closer to the flywheel housing 43.

Further, the second output shaft 25 is inserted into the bearing 45. The second output shaft 25 is supported by the bearing case 44 via the bearing 45.

That is, the engine output shaft 35 is supported by the bearing case 44 via the bearing 45.

Further, the output rotating body 50 is attached to the left end portion of the engine output shaft 35. As a result, the output rotating body 50 is attached to the portion of the engine output shaft 35 on the left side of the bearing 45.

That is, the output rotating body 50 is attached to the portion of the engine output shaft 35 opposite to the engine 6 with respect to the bearing 45.

Further, the flywheel 26 is attached to the portion of the engine output shaft 35 on the right side of the bearing 45. That is, the flywheel 26 is attached to the portion of the engine output shaft 35 on the engine 6 side with respect to the bearing 45.

[Structure of device support]
As shown in FIG. 4, the combine A includes a device support portion 7. As shown in FIGS. 4 and 5, the device support portion 7 is supported by the bearing case 44. That is, the combine A includes a device support portion 7 supported by the bearing case 44.

Then, the exhaust treatment device 33 is supported by the device support portion 7.

The configuration of the device support portion 7 will be described in detail below. As shown in FIG. 4, the device support portion 7 has a first support portion 71, a second support portion 72, and a third support portion 73.

That is, the device support portion 7 has a first support portion 71 and a second support portion 72 different from the first support portion 71.

The first support portion 71 has a first pedestal 81, a first lower stay 82, and a first upper stay 83. The first pedestal 81 is integrally formed with the bearing case 44. Further, the first lower stay 82 and the first upper stay 83 are both formed in an L shape in a side view.

As shown in FIG. 6, a horizontal first support surface 81a is formed at the upper end of the first pedestal 81. The first lower stay 82 is bolted to the first support surface 81a. Then, as shown in FIG. 4, the first upper stay 83 is bolted to the upper part of the first lower stay 82.

The second support portion 72 has a second pedestal 91, a second lower stay 92, and a second upper stay 93. The second pedestal 91 is integrally formed with the bearing case 44. Further, both the second lower stay 92 and the second upper stay 93 are formed in an L shape in a side view. The second support portion 72 is located behind the first support portion 71.

As shown in FIG. 6, a horizontal second support surface 91a is formed at the upper end of the second pedestal 91. The second lower stay 92 is bolted to the second support surface 91a. Then, as shown in FIG. 4, the second upper stay 93 is bolted to the upper part of the second lower stay 92.

The third support portion 73 has a plate-shaped support portion 73a, a front side clamp 73b, and a rear side clamp 73c. The plate-shaped support portion 73a has a plate-like shape in a horizontal posture. Further, the plate-shaped support portion 73a is supported by the first upper stay 83 and the second upper stay 93. The front clamp 73b is supported at the front end of the plate-shaped support 73a. Further, the rear side clamp 73c is supported at the rear end portion of the plate-shaped support portion 73a.

As shown in FIG. 7, the exhaust treatment device 33 is arranged so that the longitudinal direction of the exhaust treatment device 33 is along the front-rear direction of the machine body. That is, the exhaust treatment device 33 is arranged in a state in which the longitudinal direction of the exhaust treatment device 33 intersects the extending direction of the engine output shaft 35 in a plan view.

Then, as shown in FIGS. 4 and 5, the front portion of the exhaust treatment device 33 is supported by the front side clamp 73b. Further, the rear portion of the exhaust treatment device 33 is supported by the rear side clamp 73c.

Further, as described above, the second support portion 72 is located behind the first support portion 71. That is, in the longitudinal direction of the exhaust treatment device 33, the position of the first support portion 71 and the position of the second support portion 72 are different.

Further, as shown in FIGS. 4 and 6, the first pedestal 81 is supported by the front portion in the upper part of the case portion 44b. Further, the second pedestal 91 is supported by a rear portion in the upper portion of the case portion 44b.

That is, the device support portion 7 is supported by the case portion 44b. More specifically, the device support portion 7 is supported on the upper portion of the case portion 44b.

[Structure of tension mechanism]
As shown in FIGS. 2 and 4, the tension mechanism 13 has a tension ring 65, an arm 66, and a pulling portion 67. The tension wheel 65 abuts on the first endless rotating body 63. Further, the arm 66 is provided in a state of being inclined downward in the front. The tension wheel 65 is supported by the front end portion of the arm 66.

That is, the tension mechanism 13 has a tension ring 65 that contacts the first endless rotating body 63 and an arm 66 that supports the tension ring 65.

As shown in FIGS. 4, 6 and 7, the first pedestal 81 has an arm support portion 81b. The arm support portion 81b projects to the left. Further, the arm 66 has a tubular portion 66a. The tubular portion 66a is located at the rear end of the arm 66. The arm support portion 81b is inserted into the tubular portion 66a.

As a result, the tubular portion 66a is supported by the arm support portion 81b in a state in which it can swing around the swing shaft core P2 along the left-right direction of the machine body. That is, the arm 66 is supported by the device support portion 7 in a swingable state.

The pulling portion 67 is provided so as to extend over the engine frame EF and the arm 66. The lower end of the pulling portion 67 is supported by the engine frame EF. Further, the upper portion of the pulling portion 67 is connected to the arm 66.

Then, the pulling portion 67 is configured to pull the arm 66 backward and downward. As a result, the arm 66 is pulled in the counterclockwise direction in FIG. As a result, the tension wheel 65 is pressed against the first endless rotating body 63. As a result, tension is applied to the first endless rotating body 63.

[Structure of Regulatory Department]
As shown in FIGS. 4, 7, and 8, the combine A includes a regulation unit 28. The regulation unit 28 is located in front of the second rotating body 52. Further, the regulating portion 28 extends along a portion of the second endless rotating body 64 that is in contact with the second rotating body 52.

Then, the regulating unit 28 regulates the displacement of the second endless rotating body 64 in the direction orthogonal to the rotating direction of the second endless rotating body 64. More specifically, the regulating unit 28 regulates that the portion of the second endless rotating body 64 in contact with the second rotating body 52 is displaced toward the outer peripheral side of the second rotating body 52.

As shown in FIGS. 6 to 8, the first pedestal 81 has an upper mounting portion 81c. Then, the upper mounting stay 29 is attached to the upper mounting portion 81c from the left side.

Further, a protruding portion 31 is provided below the first pedestal 81. The protruding portion 31 is connected to the front portion at the lower portion of the case portion 44b. Further, the protruding portion 31 protrudes to the front side.

A lower mounting portion 31a is formed at the front end portion of the protruding portion 31. Then, the lower mounting stay 30 is attached to the lower mounting portion 31a from the left side.

And the upper part of the regulation part 28 is fixed to the upper mounting stay 29. Further, the lower portion of the regulating portion 28 is fixed to the lower mounting stay 30. As a result, the regulating portion 28 is supported by the first pedestal 81 via the upper mounting stay 29. That is, the regulation unit 28 is supported by the device support unit 7. Further, the regulating portion 28 is supported by the protruding portion 31 via the lower mounting stay 30.

According to the configuration described above, the device support portion 7 is supported by the bearing case 44. Further, the exhaust treatment device 33 is supported by the bearing case 44 via the device support portion 7. As a result, the exhaust treatment device 33 and the device support portion 7 are likely to be located in the vicinity of the engine 6. Therefore, the space required for arranging the engine 6, the exhaust treatment device 33, and the device support portion 7 tends to be relatively small.

Therefore, with the configuration described above, it is possible to realize a combine A that makes it easy to compactly accommodate the engine 6, the exhaust treatment device 33, and the device support portion 7.

Note that the above-described embodiment is only an example, and the present invention is not limited to this, and can be changed as appropriate.

[Another Embodiment of the First Embodiment]
(1) The bearing case 44 or the case portion 44b may cover the entire engine output shaft 35.

(2) A processing device for purifying the exhaust gas discharged from the engine 6 using SCR (Selective Catalytic Reduction) (selective catalytic reduction) may be provided, and this processing device may be supported by the device support portion 7. .. In this case, this treatment device corresponds to the "exhaust treatment device" according to the present invention.

(3) The arrangement of some or all of the members may be reversed in the left-right direction.

(4) The engine output shaft 35 may be composed of a single member.

(5) The bearing case 44 may be supported by the engine 6 without going through the flywheel housing 43. That is, the bearing case 44 does not have to be supported by the flywheel housing 43.

(6) The case portion 44b does not have to have a shape that expands toward the side closer to the flywheel housing 43. For example, the case portion 44b may have a cylindrical shape with the rotating shaft core P1 as the central axis.

(7) The device support portion 7 does not have to be supported by the case portion 44b. In this case, the device support portion 7 may be supported by the holding portion 44a.

(8) The first output shaft 24 does not have to be included in the engine output shaft 35.

[Second Embodiment]
Hereinafter, the second embodiment of the present invention will be described with reference to FIGS. 9 to 19. In the following description, unless otherwise specified, the direction of the arrow F shown in FIGS. 9, 10, 12, 14 to 18 is defined as “front” and the direction of arrow B is defined as “rear”. 10 to 13, the direction of the arrow L shown in FIGS. 13, 15, 16 and 19 is "left", and the direction of the arrow R is "right". Further, the direction of the arrow U shown in FIGS. 9, 11, 13 to 19 is defined as “up”, and the direction of the arrow D is defined as “down”.

[Overall composition of combine harvester]
As shown in FIGS. 9 and 10, in the ordinary combine harvester A1, the cutting and transporting unit 101, the cabin 102, the operating unit 103, the threshing device 104, the grain tank 105, the engine 106, and the left and right fronts. The wheels 108 and the left and right rear wheels 109 are provided.

The cutting and transporting unit 101 cuts the crops in the field and transports them backward. The crop is, for example, a planted culm such as rice, but may be soybean, corn, or the like. The driving unit 103 is covered with the cabin 102. The threshing device 104 threshes the harvested product cut by the cutting transport unit 101. The harvest is, for example, a harvested culm.

The grain tank 105 stores the grains that have been threshed by the threshing device 104. The rear wheel 109 is configured to be steerable. The front wheels 108 are configured to be unsteerable and are rotationally driven by the power of the engine 106. A screw conveyor type grain discharge device 118 is provided on the left side of the machine body of the grain tank 105, and the grain discharge device 118 transports the grains stored in the grain tank 105 to the outside of the machine body.

The cutting and transporting unit 101 includes a cutting unit 111 and a feeder 112. The cutting section 111 cuts the planted grain culms in the field and gathers the cut grain culms toward the central portion in the cutting width direction. The feeder 112 transports the culms that have been cut and gathered in the center toward the threshing device 104 at the rear of the machine body. Then, the threshing device 104 threshes the harvested culms transported by the feeder 112. That is, the threshing device 104 threshes the cut grain culms cut by the cutting unit 111.

The threshing device 104 is located at the center position on the left and right sides of the machine. The grain tank 105 is located on the front side of the machine body above the threshing device 104. The engine 106 is located on the rear side of the machine body above the threshing device 104. That is, the threshing device 104 and the grain tank 105 are provided side by side, and the grain tank 105 and the engine 106 are provided side by side.

That is, both the grain tank 105 and the engine 106 are located above the threshing device 104. Further, the engine 106 is located behind the grain tank 105. Further, the grain tank 105 and the engine 106 are arranged so as to be adjacent to each other in the front-rear direction.

Further, the threshing device 104 has an engine frame EF (see FIG. 14). The engine frame EF is located above the threshing device 104. The engine 106 is supported by the engine frame EF. That is, the engine 106 is supported on the upper part of the threshing device 104.

The outer sides of the threshing device 104 on both the left and right sides are covered with the exterior cover 117. The grain tank 105 is formed in a downward constriction shape in a lateral view.

As shown in FIG. 9, the lower part of the fuselage is provided with left and right main frames 120 extending in the front-rear direction of the fuselage. The left and right front wheels 108 and the left and right rear wheels 109 are provided so as to be located on the outer side in the left-right direction of each of the left and right main frames 120. The left and right main frames 120 are supported by the left and right front wheels 108 and the left and right rear wheels 109.

Further, as shown in FIGS. 9 and 10, the combine A1 includes a deck 110, a ladder 113, and a lower deck 180. The deck 110, the ladder 113, and the lower deck 180 are all provided at the rear of the combine A1.

The deck 110 is located behind the engine 106. Further, as shown in FIG. 10, the engine 106 and the deck 110 are arranged so as to be adjacent to each other in the front-rear direction in a plan view. The deck 110 can be used by the operator as a scaffold.

Further, the lower deck 180 is provided on the right side of the deck 110. Further, the lower deck 180 is adjacent to the deck 110 in a plan view. The lower deck 180 is provided at a position lower than the deck 110 (see FIG. 15). Further, the lower deck 180 can be used by the operator as a scaffold.

As shown in FIGS. 9 and 10, the ladder 113 extends vertically. The worker can climb the lower deck 180 by climbing the ladder 113. In addition, the worker can climb the deck 110 from the lower deck 180.

Further, as shown in FIG. 12, the deck 110 has a handrail 110a. The handrail 110a is provided over the rear end portion and the left end portion of the deck 110. The worker can grasp the handrail 110a and stabilize the posture of the body when ascending and descending to the deck 110.

Further, the lower deck 180 has a lower handrail 180a. The lower handrail 180a is provided at the right end of the lower deck 180. When ascending and descending to the lower deck 180, the operator can grasp the lower handrail 180a and stabilize the posture of the body.

Further, as shown in FIGS. 11 and 12, the combine A1 is provided with four brackets 114 and four anti-vibration supports 115. Each bracket 114 is attached to a right front portion, a left front portion, a right rear portion, and a left rear portion in the lower part of the engine 106, respectively. Each bracket 114 is supported by the engine frame EF via each anti-vibration support 115.

That is, the engine 106 is supported by the engine frame EF via each bracket 114 and each anti-vibration support 115.

[Exhaust section configuration]
As shown in FIGS. 11 and 12, the engine 106 includes an exhaust unit 130. The exhaust unit 130 is connected to the engine 106. Then, the exhaust unit 130 processes and discharges the exhaust gas discharged from the engine 106.

More specifically, the exhaust unit 130 includes a first exhaust pipe 131, a second exhaust pipe 132, and an exhaust treatment device 133. As shown in FIG. 12, the first exhaust pipe 131 extends in the left-right direction of the airframe. Further, the exhaust treatment device 133 is arranged so that the longitudinal direction of the exhaust treatment device 133 is along the front-rear direction of the airframe. Further, the exhaust treatment device 133 is located outside the engine 106 on one side in the left-right direction of the engine. More specifically, the exhaust treatment device 133 is located on the left outer side of the engine 106.

And the right end of the first exhaust pipe 131 is connected to the engine 106. Further, the left end portion of the first exhaust pipe 131 is connected to the rear end portion of the exhaust treatment device 133.

Further, the right end portion of the second exhaust pipe 132 is connected to the front end portion of the exhaust treatment device 133. Then, the second exhaust pipe 132 extends from the front end portion of the exhaust treatment device 133 toward the rear side.

The exhaust gas discharged from the engine 106 reaches the exhaust gas treatment device 133 through the first exhaust pipe 131. Then, the exhaust treatment device 133 treats the exhaust gas. More specifically, the exhaust treatment device 133 has a DPF (not shown). Then, the exhaust treatment device 133 reduces the particulate matter contained in the exhaust gas by the DPF. In addition, "DPF" is an abbreviation for a diesel particulate filter.

As described above, the combine A1 is located on the left side of the engine 106 and is provided with an exhaust treatment device 133 that processes the exhaust gas discharged from the engine 106.

The exhaust gas treated by the exhaust gas treatment device 133 passes through the second exhaust pipe 132 and is discharged from the opening at the rear end of the second exhaust pipe 132.

[Configuration related to engine output shaft]
As shown in FIGS. 13 and 14, the combine A1 includes an engine output shaft 135 and a transmission mechanism G. The engine output shaft 135 is an output shaft of the engine 106. Further, the engine output shaft 135 extends in the left-right direction of the airframe. Further, the engine output shaft 135 projects from the engine 106 toward the left side of the airframe.

The transmission mechanism G has a first rotating body 121, a second rotating body 122, a first endless rotating body 123, and a second endless rotating body 124.

The first rotating body 121 and the second rotating body 122 are attached to the engine output shaft 135. The first rotating body 121 is arranged on the engine 106 side with respect to the second rotating body 122. Then, the first rotating body 121 and the second rotating body 122 rotate integrally with the engine output shaft 135.

The first endless rotating body 123 is wound around the first rotating body 121. Further, the first endless rotating body 123 is configured to transmit the power received from the first rotating body 121 to the threshing device 104.

With this configuration, the power from the engine 106 is transmitted to the threshing device 104 via the engine output shaft 135, the first rotating body 121, and the first endless rotating body 123. As a result, the threshing device 104 is driven.

Further, the second endless rotating body 124 is wound around the second rotating body 122. Further, the second endless rotating body 124 is configured to transmit the power received from the second rotating body 122 to the front wheels 108.

With this configuration, the power from the engine 106 is transmitted to the front wheels 108 via the engine output shaft 135, the second rotating body 122, and the second endless rotating body 124. As a result, the front wheels 108 are driven.

That is, the transmission mechanism G extracts power from the engine output shaft 135.

[Structure related to exhaust cover]
As shown in FIGS. 11, 13, and 14, the combine A1 includes an exhaust cover 140. The exhaust cover 140 covers the exhaust treatment device 133 from one side in the left-right direction of the machine body. More specifically, the exhaust cover 140 covers the exhaust treatment device 133 from the left side.

The exhaust cover 140 is arranged on one side and the outside of the engine 106 in the left-right direction. More specifically, the exhaust cover 140 is arranged on the left outer side of the engine 106.

Further, the engine output shaft 135 extends from the engine 106 toward the exhaust cover 140 side.

Further, at least a part of the transmission mechanism G is arranged at a position sandwiched between the engine 106 and the exhaust cover 140. More specifically, the first rotating body 121 and the second rotating body 122 are arranged at positions sandwiched between the engine 106 and the exhaust cover 140. Further, the portion of the first endless rotating body 123 in contact with the first rotating body 121 is arranged at a position sandwiched between the engine 106 and the exhaust cover 140. Further, the portion of the second endless rotating body 124 that is in contact with the second rotating body 122 is arranged at a position sandwiched between the engine 106 and the exhaust cover 140.

[Structure related to dustproof cover]
As shown in FIGS. 11 and 12, the combine A1 includes a cooling device 136 (corresponding to the “radiator” according to the present invention), a cooling fan 137, and a dustproof cover 138.

Both the cooling device 136 and the cooling fan 137 are located on the outside of the engine 106 in the left-right direction on the other side. More specifically, the cooling device 136 and the cooling fan 137 are both located on the outer right side of the engine 106. The cooling device 136 is arranged on the right side of the cooling fan 137.

Further, the dustproof cover 138 covers the cooling device 136 and the cooling fan 137 from the other side in the left-right direction of the machine body. More specifically, the dustproof cover 138 covers the cooling device 136 and the cooling fan 137 from the right side.

The dustproof cover 138 is arranged on the outside of the engine 106 in the left-right direction on the other side. More specifically, the dustproof cover 138 is arranged on the outer right side of the engine 106.

Further, the cooling path (not shown) through which the cooling water of the engine 106 flows is configured to pass through the cooling device 136. Then, the cooling fan 137 cools the cooling device 136 by the cooling air. As a result, the cooling water of the engine 106 is cooled in the cooling device 136.

To elaborate on the cooling air, the cooling fan 137 is driven so as to generate cooling air from the outside to the inside in the left-right direction of the machine body. That is, the cooling air generated by the cooling fan 137 flows from the right side to the left side.

Here, the dustproof cover 138 is configured to allow this cooling air to pass through and to prevent dust from entering by a filter. That is, the dustproof cover 138 prevents dust from entering the cooling device 136 and the cooling fan 137.

With this configuration, when the cooling fan 137 is driven, the air outside the dustproof cover 138 is sucked into the inside of the dustproof cover 138. Then, the sucked air passes through the cooling device 136 as cooling air. As a result, the cooling device 136 is cooled.

[Bonnet configuration]
As shown in FIGS. 11, 12, 15, and 16, the combine A1 includes a bonnet 150. The bonnet 150 has a frame body 151 (corresponding to the "base" according to the present invention) and a top plate 152.

The frame body 151 supports the top plate 152 and surrounds the engine 106. That is, the bonnet 150 surrounds the engine 106.

As shown in FIGS. 11, 16 and 17, the top plate 152 is located above the engine 106. Further, the front end portion of the top plate 152 is supported by the frame body 151 in a state where it can swing around the first swing shaft core P11 along the left-right direction of the machine body. The top plate 152 is configured so that the state can be changed between the open state and the closed state by swinging around the first swing shaft core P11.

The open state is a state in which the upper part of the bonnet 150 is opened. The closed state is a state in which the upper part of the bonnet 150 is closed.

In FIG. 16, the top plate 152 in the open state is shown. Further, in FIG. 17, the top plate 152 in the open state is shown by a virtual line. Further, in FIG. 17, the closed top plate 152 is shown by a solid line.

As shown in FIGS. 16 and 17, the top plate 152 in the open state is inclined backward. Further, the top plate 152 in the closed state is in a horizontal posture.

Further, the bonnet 150 has a maintenance mechanism 153. The maintenance mechanism 153 includes a support rod 153a and an engagement hole 153b.

One end of the support rod 153a is connected to the top plate 152 in a swingable state. Further, the engagement hole 153b is formed in the frame body 151. The other end of the support rod 153a is configured to be engageable with the engagement hole 153b.

When the operator engages the other end of the support rod 153a with the engagement hole 153b while the top plate 152 is in the open state, the top plate 152 is in a state of being supported by the support rod 153a. As a result, the top plate 152 is maintained in the open state.

That is, the maintenance mechanism 153 maintains the top plate 152 in an open state.

Further, when the operator removes the other end of the support rod 153a from the engagement hole 153b, the top plate 152 is not supported by the support rod 153a. Then, by swinging the top plate 152 downward, the top plate 152 is closed.

The support rod 153a is configured so that it can be stored in a posture along the top plate 152.

Further, as shown in FIGS. 11 and 17, the rear end portion of the top plate 152 is fastened to the frame body 151 by a plurality of wing bolts b3. When the operator removes each wing bolt b3, the top plate 152 is in a state where it can swing around the first swing shaft core P11.

As shown in FIGS. 11, 12, 15, and 16, the frame body 151 includes the first frame 101f, the second frame 102f, the third frame 103f, the fourth frame 104f, the fifth frame 105f, and the sixth frame 106f. , 7th frame 107f, 8th frame 108f, 9th frame 109f, 10th frame 110f, 11th frame 111f, 12th frame 112f.

The first frame 101f is located at the rear end portion in the upper part of the frame body 151. Further, the first frame 101f extends in the left-right direction of the machine body.

The third frame 103f is located at the front end portion in the upper part of the frame body 151. Further, the third frame 103f extends in the left-right direction of the machine body.

The second frame 102f is located at the left end portion in the upper part of the frame body 151. Further, the second frame 102f is located above the exhaust treatment device 133. Further, the second frame 102f extends in the front-rear direction of the machine body. The second frame 102f is provided so as to extend over the left end portion of the first frame 101f and the left end portion of the third frame 103f.

The fourth frame 104f is located at the right end of the upper part of the frame body 151. Further, the fourth frame 104f extends in the front-rear direction of the airframe. The fourth frame 104f is provided so as to extend over the right end portion of the first frame 101f and the right end portion of the third frame 103f.

The fifth frame 105f is located at the left end portion in the rear portion of the frame body 151. Further, the fifth frame 105f extends in the vertical direction of the machine body. The lower end of the fifth frame 105f is fixed to the deck 110.

The sixth frame 106f and the tenth frame 110f are located at the front portion of the frame body 151. Further, the sixth frame 106f extends in the vertical direction of the machine body. Further, the 10th frame 110f extends in the left-right direction of the machine body and is located below the 3rd frame 103f. Further, the tenth frame 110f is located above the engine frame EF. The sixth frame 106f is provided over the third frame 103f and the tenth frame 110f.

The seventh frame 107f is located at the lower part in the front part of the frame body 151. Further, the seventh frame 107f extends in the vertical direction of the machine body. The lower end of the seventh frame 107f is fixed to the engine frame EF. The seventh frame 107f is provided over the engine frame EF and the tenth frame 110f.

The 7th frame 107f is located on the left side of the 6th frame 106f.

The eighth frame 108f is located at the right end portion in the front portion of the frame body 151. Further, the eighth frame 108f extends in the vertical direction of the machine body and is located to the right of the sixth frame 106f and the seventh frame 107f. The lower end of the eighth frame 108f is fixed to the engine frame EF. The eighth frame 108f is provided over the engine frame EF and the third frame 103f.

The ninth frame 109f is located at the right end of the rear portion of the frame body 151. Further, the ninth frame 109f extends in the vertical direction of the airframe and is located behind the eighth frame 108f. The lower end of the ninth frame 109f is fixed to the engine frame EF.

The right end of the 10th frame 110f is connected to the 8th frame 108f. Further, the left end portion of the 10th frame 110f is connected to the front end portion of the 11th frame 111f.

The eleventh frame 111f is located at the left end of the frame body 151. Further, the 11th frame 111f extends in the front-rear direction of the airframe and is located on the left side of the 7th frame 107f and the 5th frame 105f. The rear end of the 11th frame 111f is connected to the left end of the 12th frame 112f.

The twelfth frame 112f is located at the rear of the frame body 151. Further, the 12th frame 112f extends in the left-right direction of the machine body. The right end of the 12th frame 112f is connected to the 5th frame 105f. The 12th frame 112f is provided over the 5th frame 105f and the 11th frame 111f.

As shown in FIG. 15, the first mounting portion 161 is fixed to the upper end portion of the fifth frame 105f. Further, a second mounting portion 162 is fixed to the upper end portion of the ninth frame 109f. The first frame 101f is fastened to the first mounting portion 161 and the second mounting portion 162 by a plurality of bolts b1. Further, the first frame 101f can be removed by removing the plurality of bolts b1.

That is, the first frame 101f is removable.

Further, the second frame 102f is fastened to the first mounting portion 161 and the third frame 103f by a plurality of bolts b2. Further, the second frame 102f can be removed by removing the plurality of bolts b2.

That is, the second frame 102f is removable.

Further, as shown in FIGS. 11 and 16, a rear opening 151a is provided at the rear end of the bonnet 150. The rear opening 151a is formed by the first frame 101f, the fifth frame 105f, and the ninth frame 109f. Then, the rear opening 151a communicates the inside and outside of the bonnet 150.

Further, as shown in FIGS. 16 and 19, the front upper opening 151b (corresponding to the "front opening" according to the present invention) and the front lower opening 151c (corresponding to the present invention) are located at the front end of the bonnet 150. (Equivalent to the "front opening") is provided.

The front upper opening 151b is formed by the third frame 103f, the sixth frame 106f, the eighth frame 108f, and the tenth frame 110f. Then, the front upper opening 151b communicates the inside and outside of the bonnet 150.

Further, the front lower opening 151c is formed by the 7th frame 107f, the 8th frame 108f, and the 10th frame 110f. Then, the front lower opening 151c communicates the inside and outside of the bonnet 150.

As shown in FIGS. 12, 15, and 16, the engagement hole 153b is formed in the fourth frame 104f.

[Detailed configuration of exhaust cover]
As shown in FIGS. 11 to 14, the exhaust cover 140 has a main body portion 141, a hinge 142, and an opening / closing portion 143. The main body portion 141 includes a front wall portion 141a, a side wall portion 141b, a rear wall portion 141c, and an upper wall portion 141d.

The front wall portion 141a is located at the front end portion of the main body portion 141. Further, the rear wall portion 141c is located at the rear end portion of the main body portion 141. The front wall portion 141a and the rear wall portion 141c are both plate-shaped in a vertical posture and face each other.

The side wall portion 141b is located at the left end portion of the main body portion 141. Further, the side wall portion 141b has a plate shape in a vertical posture, and is provided so as to extend over the left end of the front wall portion 141a and the left end of the rear wall portion 141c.

The upper wall portion 141d is located at the upper end portion of the main body portion 141. Further, the upper wall portion 141d has a horizontal plate shape, and is provided so as to extend over the upper end of the front wall portion 141a and the upper end of the rear wall portion 141c.

The opening / closing part 143 is located at the lower part of the exhaust cover 140. The upper end of the opening / closing portion 143 is supported by the lower end of the side wall portion 141b via the hinge 142. That is, the opening / closing portion 143 is supported by the main body portion 141.

Then, the opening / closing portion 143 can be swung around the second swing shaft core P21 along the front-rear direction of the machine body by the hinge 142. That is, the upper end portion of the opening / closing portion 143 is supported by the main body portion 141 in a state where it can swing around the second swing shaft core P21 along the front-rear direction of the machine body.

With this configuration, as shown in FIG. 13, the opening / closing portion 143 can change its posture between the open posture and the closed posture. The opening / closing portion 143 in the closed posture is inclined downward to the right. Further, the opening / closing portion 143 in the open posture is in a vertical posture.

In FIG. 13, the opening / closing portion 143 in the closed posture is shown by a solid line. Further, the opening / closing portion 143 in the open posture is shown by a virtual line.

As shown in FIG. 14, the second swing shaft core P21 is inclined backward and upward. As described above, the phrase "along the front-rear direction of the airframe" according to the present invention includes not only a state in which the axial core direction exactly coincides with the front-rear direction of the airframe, but also the axial core direction substantially coincides with the front-rear direction of the airframe. The state of being is also included.

Further, as shown in FIG. 14, the opening / closing portion 143 is fastened to the front wall portion 141a and the rear wall portion 141c by a plurality of bolts b4. At this time, the opening / closing portion 143 is in the closed posture.

Then, when the operator removes the plurality of bolts b4, the opening / closing portion 143 hangs down according to gravity. As a result, the opening / closing portion 143 is in the open posture.

[Structure of intake unit]
As shown in FIGS. 12 and 18, the combine A1 includes an intake unit 170. The intake unit 170 connects to the engine 106 and supplies air to the engine 106.

More specifically, the intake unit 170 includes a first intake pipe 171, a second intake pipe 172, a third intake pipe 173, and a cleaning device 174 (corresponding to the "air cleaner" according to the present invention).

The cleaning device 174 is located behind the bonnet 150. Further, as shown in FIGS. 11, 12, and 18, one end of the first intake pipe 171 is connected to the engine 106. Further, the other end of the first intake pipe 171 is connected to the cleaning device 174.

One end of the second intake pipe 172 is connected to the engine 106. Further, the other end of the second intake pipe 172 is connected to the lower end of the cooling device 136.

One end of the third intake pipe 173 is connected to the upper end of the cooling device 136. The other end of the third intake pipe 173 is connected to the engine 106.

The cleaning device 174 in this embodiment is an air cleaner integrated with a pre-cleaner. Then, the purifying device 174 purifies the sucked air.

The air purified by the cleaning device 174 reaches the engine 106 through the first intake pipe 171 and is compressed in the supercharger. The compressed air reaches the cooling device 136 through the second intake pipe 172 and is cooled in the cooling device 136. The cooled air is supplied to the engine 106 through the third intake pipe 173.

Further, as shown in FIG. 12, the combine A1 includes a pair of support stays 181 and a plate-shaped device support portion 182. The pair of support stays 181 are supported by the dustproof cover 138. Further, the pair of support stays 181 extend to the left rear from the dustproof cover 138.

The device support portion 182 is supported by a pair of support stays 181. The cleaning device 174 is supported by the device support portion 182.

As shown in FIGS. 10 and 12, the cleaning device 174 overlaps with the lower deck 180 in a plan view.

Further, as shown in FIGS. 12 and 18, the first intake pipe 171 passes between the fifth frame 105f and the ninth frame 109f. Further, the first intake pipe 171 passes below the first frame 101f. That is, the first intake pipe 171 passes through the rear opening 151a.

In this way, the intake unit 170 is arranged so as to pass through the rear opening 151a.

According to the configuration described above, the operator can access the engine 106 through the rear opening 151a. Therefore, the maintenance work of the engine 106 is easy.

Moreover, in the configuration described above, the upper part of the engine 106 is covered with the top plate 152. Further, the front of the engine 106 is covered with a grain tank 105. Further, the left side and the right side of the engine 106 are covered with the exhaust cover 140 and the dustproof cover 138.

Also, when the combine A1 is running, the dust floating in the air will move to the rear side relative to the engine 106. Therefore, dust does not easily enter the bonnet 150 through the rear opening 151a.

Therefore, with the configuration described above, dust is unlikely to accumulate on the engine 106.

That is, with the configuration described above, it is possible to realize the combine A1 in which the maintenance work of the engine 106 is easy and the dust is less likely to accumulate on the engine 106.

[Another Embodiment of the Second Embodiment]
(1) The top plate 152 may be configured to be removable. In this case, the upper portion of the bonnet 150 is opened by removing the top plate 152. That is, when the top plate 152 is removed, it becomes a state corresponding to the "open state" according to the present invention.

(2) Instead of the frame body 151, a cover having a front wall, a left wall, and a right wall may be provided. In this case, the cover corresponds to the "base" according to the present invention.

(3) The top plate 152 may be configured so that the state cannot be changed to the open state.

(4) The left end or right end of the top plate 152 may be supported by the frame body 151 in a state where it can swing around the swing axis along the front-rear direction of the machine body.

(5) The arrangement of some or all of the members may be reversed in the left-right direction.

[Third Embodiment]
Hereinafter, a third embodiment of the present invention will be described with reference to FIGS. 20 to 28.

Hereinafter, a description will be given of a case where the embodiment of the combine according to the present invention is applied to the conventional combine shown in FIGS. 20 to 22 based on 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. Define. That is, the direction indicated by reference numeral (F) in FIGS. 20 and 21 is the front side of the machine body, and the direction indicated by reference numeral (B) in FIGS. 20 and 21 is the rear side of the machine body. The direction indicated by the reference numeral (L) in FIGS. 21 and 22 is the left side of the aircraft, and the direction indicated by the reference numeral (R) in FIGS. 21 and 22 is the right side of the aircraft.

〔overall structure〕
As shown in FIGS. 20 to 22, the combine has a harvesting and transporting unit 201, a cabin 202, an operating unit 203, a threshing device 204, a grain tank 205, an engine 206 as a power source, and straw. A shredding device 207, a pair of left and right

front wheels

208, 208, and a pair of left and right

rear wheels

209, 209 are provided. The harvesting and transporting unit 201 cuts the planted culms in the field and transports the harvested culms (harvested products) to the rear. The driving unit 203 is covered with the cabin 202. The threshing device 204 is provided at the center of the left and right sides of the machine body, and threshs the cut grain culms cut by the harvesting and transporting unit 201. The grain tank 205 stores the grains obtained by the threshing process of the threshing device 204. The grain tank 205 is provided above the threshing device 204, and the threshing device 204 and the grain tank 205 are provided vertically side by side. Behind the threshing device 204, a straw shredding device 207 for shredding the straw after the threshing process is provided.

The rear wheel 209 is configured to be steerable. The front wheels 208 are configured to be unsteerable and are rotationally driven based on the power of the engine 206. A screw conveyor type grain discharge device 218 is provided on the left side of the grain tank 205. The grain discharge device 218 transports the grains stored in the grain tank 205 to the outside of the machine body.

The harvesting and transporting unit 201 is supported by an elevating cylinder (not shown) at the front of the machine body so as to be able to move up and down. The harvest transport unit 201 is provided with a harvest header 211 and a feeder 212. The harvest header 211 cuts the crops to be planted and gathers the cut crops in the central portion in the cutting width direction. The feeder 212 transports the harvested and centrally collected crops toward the threshing device 204 at the rear of the machine.

The harvest header 211 is provided with a rotary reel 213, a cutting blade 214, and a lateral feed auger 215. The rotary reel 213 scrapes the tip side of the crop to be harvested toward the rear. The cutting blade 214 is formed in a clipper shape, and the root of the crop is cut and cut. The lateral feed auger 215 gathers the harvested crops at the center of the harvest header 211 in the cutting width direction.

Although not described in detail, a pair of left and right endless rotating chains are wound around the front and rear wheels inside the tubular case of the feeder 212, and a plurality of locking conveyors are erected over each endless rotating chain. A conveyor 216 is provided. The transport conveyor 216 is configured to transport the crops delivered from the harvest header 211 toward the rear and upper directions.

The threshing device 204 is located at a low position at the center of the left and right sides of the machine, and the grain tank 205 is located on the front side of the machine above the threshing device 204. Further, an engine 206 is provided behind the grain tank 205. The engine 206 is arranged behind the grain tank 205, and the grain tank 205 and the engine 206 are arranged in the front-rear direction. The outer sides of the left and right sides of the threshing device 204 are covered with the exterior cover 217.

Grains are obtained by the threshing process by the threshing device 204, and the grains are transported to the grain tank 205 by the threshing device 219. Further, for example, the second product such as a culm with branches is transported to the entrance of the threshing device 204 by the second product reducing device 220 and threshed again.

As shown in FIGS. 20 to 22, the engine 206 is located behind the grain tank 205 and above the threshing device 204. The engine 206 is covered by the engine bonnet 221. The engine bonnet 221 has a frame 221F that supports a top plate or the like. As shown in FIG. 23, an engine 206, a supercharger 222, and an exhaust treatment device 223 are provided inside the engine bonnet 221. Further, an air cleaner 224 and a cooling device 225 are provided on the right side of the machine body with respect to the engine bonnet 221. The engine 206 is provided above the threshing device 204 and next to the inside of the cooling device 225.

The combustion air taken into the engine 206 first passes through the air cleaner 224. Then, dust and the like contained in the combustion air are removed by the air cleaner 224. That is, the air cleaner 224 removes dust from the combustion air supplied to the engine 206. The air that has passed through the air cleaner 224 is supplied to the combustion chamber of the engine 206 via compression by the supercharger 222 and cooling by the intercooler 225A (see FIG. 24). Exhaust gas, which is the air after being used for combustion, is purified by the exhaust treatment device 223 and then released into the atmosphere. The exhaust treatment device 223 has a diesel particulate filter (DPF) and purifies the exhaust gas from the engine 206 by reducing particulate matter (PM) such as diesel particulates contained in the exhaust gas.

The cooling device 225 is provided on the lateral outer side of the engine 206. The cooling device 225 is for cooling the engine 206, and a cooling fan 225F that generates cooling air is provided in the laterally inward direction of the cooling device 225. Although the details will be described later, the cooling device 225 is provided with an intercooler 225A, a radiator 225B, and an oil cooler 225C (see FIG. 24). The cooling device 225 is housed and supported in the cooling device case 231. The cooling device 225 and the cooling device case 231 extend below the lower end of the engine 206. Further, the cooling device 225 and the cooling device case 231 extend below the upper end of the threshing device 204.

As shown in FIGS. 23 and 24, the first deck 226 is provided behind the cooling device 225, and the arrangement height of the first deck 226 corresponds to the lower part of the cooling device 225 in the vertical direction. The first deck 226 is a scaffold on which an operator can perform maintenance work such as a cooling device 225 and an air cleaner 224. Workers can use the ladder 228 to climb the first deck 226. The ladder 228 is for ascending and descending from the ground to the first deck 226.

The support portion 226A is welded and fixed to the rear end of the first deck 226. The support portion 226A extends rearward from the rear end portion of the first deck 226. A recess 226h (see FIG. 28) for hooking the step of the ladder 228 is formed at the tip of the support portion 226A. A second deck 227 is provided behind the engine 206. The second deck 227 is provided at a position at the lower end of the engine 206 in the vertical direction. The second deck 227 is a scaffold on which the operator can perform maintenance work on the engine 206 and the like above the threshing device 204. The first deck 226 is located lower than the second deck 227.

As shown in FIGS. 24 and 25, a fuel tank 230 is provided directly below the cooling device 225 and to the right of the threshing device 204. The fuel tank 230 stores the fuel of the engine 206. The fuel tank 230 is provided at a position lower than the grain tank 205 and the engine 206. Further, the fuel tank 230 is provided behind the grain raising device 219, and interference between the fuel tank 230 and the second product reducing device 220 is avoided. The fuel tank 230 has a shape that is narrow in the left-right direction of the airframe and wide in the front-rear direction of the airframe and the up-down direction of the airframe. Therefore, the narrow area between the threshing device 204 and the exterior cover 217 is effectively utilized, and the fuel storage capacity of the fuel tank 230 is secured to be large. The first deck 226 is provided above the rear of the fuel tank 230.

In FIG. 22, the exterior cover 217, the air cleaner 224, and the ladder 228 are omitted in order to clearly show the positional relationship between the cooling device 225 and the fuel tank 230 with respect to the engine 206 and the threshing device 204.

[About the support structure of the cooling device and fuel tank]
As shown in FIGS. 24 to 26, the cooling device 225 is supported by the cooling device case 231. The cooling device 225 is provided on the lateral side of the body of the engine 206 in a state of being supported by the cooling device case 231. The cooling device case 231 is formed in a quadrangular shape by combining an upper frame 231U and a lower frame 231D arranged vertically along the horizontal direction, and a front frame 231F and a rear frame 231R arranged vertically in the front-rear direction. Has been done. One ends of two connecting

stays

232 and 232 are bolted to the upper frame 231U. The other ends of the two connecting

stays

232 and 232 are bolted to the frame 221F of the engine bonnet 221. As a result, the upper portion of the cooling device case 231 is supported by the frame 221F of the engine bonnet 221 via the two connecting

stays

232 and 232. Each of the connecting stays 232 and 232 is tilted so as to be located on the upper side toward the inside of the fuselage.

A support frame 233 is provided on the right wall of the threshing device 204. The support frame 233 extends in the front-rear direction of the machine body. The left ends of the two

first brackets

234 and 234 are bolted to the support frame 233. Each of the

first brackets

234 and 234 extends from the support frame 233 to the lateral outside of the machine body (to the right side of the machine body), and the lower frame 231D of the cooling device case 231 is attached to each of the extending tips of the

first brackets

234 and 234. It is placed and supported. That is, the

first brackets

234 and 234 extending laterally and outwardly from the upper part of the threshing device 204 are provided, and the lower part of the cooling device case 231 is supported by the

first brackets

234 and 234.

As shown in FIGS. 25 and 26, two

upper mount portions

235 and 235 are bolted to the upper frame 231U of the cooling device case 231. Each of the

upper mount portions

235 and 235 is a plate member formed in an L shape, and the horizontal surface portion of the upper mount portion 235 projects laterally and inward from the upper frame 231U. Then, the upper end portion of the cooling device 225 is fixed to the

upper mount portions

235 and 235 via the mount rubber. Two

lower mount portions

236 and 236 are welded and fixed to the lower frame 231D of the cooling device case 231. Each of the

lower mount portions

236 and 236 is formed in a U shape. Each of the

lower mount portions

236 and 236 projects laterally inward from the lower frame 231D, and the lower end portion of the cooling device 225 is fixed to the

lower mount portions

236 and 236 via the mount rubber.

A dustproof cover 244 is connected to the lateral outer portion of the cooling device case 231 via a hinge 245 (see FIGS. 23 and 26). The hinge 245 is fixed to the front end portion on the lateral outer side of the machine body in the cooling device case 231, and the dustproof cover 244 is configured to swing around the vertical axis center of the front end portion of the cooling device case 231.

A pair of upper and

lower snap locks

244A and 244A are provided at the ends of the dustproof cover 244 and the cooling device case 231 on the side opposite to the side where the hinge 245 is located. With the snap locks 244A and 244A locked, the dustproof cover 244 closes the lateral outer portion of the cooling device case 231. In this state, the dustproof cover 244 covers the entire lateral outer portion of the cooling device case 231 from the lateral outer side of the fuselage. That is, the cooling device case 231 has a dustproof cover 244 that can be opened and closed and swung via a hinge 245 provided at the front end of the cooling device case 231. The dustproof cover 244 is arranged on the outside of the engine 206 on the other side in the left-right direction. More specifically, the dustproof cover 244 is arranged on the outer right side of the engine 206.

The cooling fan 225F is driven so as to generate cooling air from the outside to the inside in the left-right direction of the machine. That is, the cooling air generated by the cooling fan 225F flows from the right side to the left side.

The dustproof cover 244 has a mesh-like net, and the area of the mesh-like net corresponds to the area of the cooling device case 231 in the side view of the machine body. The dust-proof cover 244 is configured to allow the cooling air to pass through and to prevent dust from entering by the mesh-like net. That is, the dustproof cover 244 prevents dust from entering the cooling device 225.

With this configuration, when the cooling fan 225F is driven, the air outside the fuselage rather than the dustproof cover 244 is sucked into the fuselage inside the dustproof cover 244. Then, the sucked air passes through the cooling device 225 as cooling air.

The cooling device 225 is a unit in which the intercooler 225A, the radiator 225B, and the oil cooler 225C are integrally integrated. The cooling device 225 is provided with an intercooler 225A, a radiator 225B, and an oil cooler 225C side by side in order from the rear side in the front-rear direction. The combustion air compressed and heated by the supercharger 222 is cooled while flowing from the lower side to the upper side inside the intercooler 225A, and is supplied to the engine 206. A cooling path (not shown) through which coolant (cooling water) for cooling the engine 206 flows is configured to pass through the cooling device 225. The coolant for cooling the engine 206 is cooled while flowing from the upper side to the lower side inside the radiator 225B. Further, the lubricating oil path (not shown) of the engine 206 is configured to pass through the cooling device 225. The lubricating oil of the engine 206 is cooled while flowing from the upper side to the lower side inside the oil cooler 225C.

A condenser 246 and a fuel cooler 251 are supported on the dustproof cover 244. Although not shown, the cabin 202 is provided with an indoor unit of an air conditioner. An evaporator is attached to this indoor unit. The condenser 246 is a part of the air conditioner, and the air conditioner air-conditions the internal boarding space in the cabin 202. In this way, the dustproof cover 244 supports the air-conditioning condenser 246 of the cabin 202 on which the driver is boarding. The refrigerant of the air conditioner is compressed by a compressor (not shown) and becomes a high temperature and high pressure state. When the refrigerant passes through the condenser 246 in this state, the refrigerant is cooled and liquefied by the wind from the cooling fan 225F.

In addition to the cooling fan 225F, radiator 225B, and oil cooler 225C, the first reserve tank 247 and the second reserve tank 248 are fixed to the upper frame 231U of the cooling device case 231 as equipment for cooling the engine 206. ing. The first reserve tank 247 and the second reserve tank 248 are the "reserve tanks" of the present invention. Each of the first reserve tank 247 and the second reserve tank 248 stores the coolant (cooling water) of the radiator 225B. Each of the first reserve tank 247 and the second reserve tank 248 is supported by the upper end portion of the cooling device case 231 in a state of being located above the cooling device case 231. The insides of the first reserve tank 247 and the second reserve tank 248 are communicated with each other. Since each of the first reserve tank 247 and the second reserve tank 248 is located above the radiator 225B, the radiator 225B is not provided with a pressure cap, and the pressure cap 247A is provided at the upper end of the first reserve tank 247. Has been done. Although not described in detail, the lower part of the first reserve tank 247 and the lower part of the engine 206 are connected by a supply pipe, and the lower part of the first reserve tank 247 and the lower part of the radiator 225B are connected by a supply pipe. Has been done. Therefore, the coolant stored in the first reserve tank 247 is smoothly supplied to the engine 206 and the radiator 225B from the lower part of the first reserve tank 247. The coolant return line from the engine 206 and the coolant return line from the radiator 225B are each connected to the top of the first reserve tank 247. The pressure cap 247A is located above the engine 206 and the radiator 225B, and is also used as an air bleeding vent for the coolant in the engine 206 and the radiator 225B.

The stay 231S is welded and fixed to the upper region of the rear frame 231R, and the stay 231S projects rearward from the rear frame 231R. The air cleaner 224 is placed and supported on the stay 231S. That is, the air cleaner 224 is supported by the rear wall of the cooling device case 231 in a state of being located behind the cooling device case 231. The air cleaner 224 is provided at a position overlapping the first deck 226 in a plan view behind the upper part of the cooling device 225.

As shown in FIGS. 22, 24 to 26, the fuel tank 230 is supported by the second bracket 237. The fuel tank 230 is provided side by side with the cooling device 225 on the lateral side of the body of the threshing device 204 and below the cooling device 225. Specifically, in the threshing device 204, the left end of the second bracket 237 is bolted to the rear part of the machine frame 238 along the front-rear direction of the machine, and the second bracket 237 is laterally outside the machine from the machine frame 238 (body). Extend to the right). That is, the second bracket 237 extends from the threshing device 204 laterally and outwardly of the machine body to mount and support the fuel tank 230. In this way, the fuel tank 230 is provided below the cooling device 225, and the fuel tank 230 is placed and supported on the second bracket 237 extending laterally outward of the machine body of the threshing device 204.

Two

vertical frames

239 and 239 are connected to the extension tip of the second bracket 237. Each of the

vertical frames

239 and 239 is extended upward from the extending tip of the second bracket 237. Then, the upper end portions of the

vertical frames

239 and 239 are connected to the lateral outer end portions of the

first brackets

234 and 234, respectively. That is, the

vertical frames

239 and 239 connect the lateral outer ends of the

first brackets

234 and 234 to the lateral outer ends of the second bracket 237.

The fuel filter 240, the fuel separator 241 and the fuel pump 242 shown in FIGS. 22, 24 and 26 are auxiliary machines for supplying fuel to the engine 206, respectively, and are described in the "engine auxiliary machine" of the present invention. is there. A fuel filter 240, a fuel separator 241 and a fuel pump 242 are supported at the rear of the second bracket 237. Each of the fuel filter 240, the fuel separator 241 and the fuel pump 242 is provided below the first deck 226 between the ladder 228 and the fuel tank 230. Each of the fuel filter 240, the fuel separator 241 and the fuel pump 242 is provided in the middle of a fuel supply pipe (not shown) provided across the fuel tank 230 and the engine 206. The fuel pump 242 is provided on the downstream side of the fuel supply pipe with respect to the fuel filter 240 and the fuel separator 241. The fuel filter 240 removes solid impurities contained in the fuel. The fuel separator 241 removes water and the like contained in the fuel. Then, with impurities and water removed from the fuel, the fuel is pumped to the downstream side of the fuel supply pipe by the fuel pump 242 and sent to the engine 206 via the fuel cooler 251.

A refueling pipe 249 is connected to the upper part of the fuel tank 230. The refueling pipe 249 extends rearward and upward from the fuel filter 240. A refueling port 249A is provided at the extending tip of the refueling pipe 249. The refueling port 249A is located in the area of the front end of the first deck 226. The fuel filler port 249A and the inside of the fuel tank 230 are communicated with each other by a fuel pipe 249. In this way, the refueling pipe 249 for refueling the fuel tank 230 is extended from the upper end of the fuel tank 230 to the first deck 226, and the refueling pipe 249 is extended to a position higher than the first deck 226. Has been done.

The third deck 250 is installed at a position lower than the fuel tank 230. The third deck 250 is supported by the second bracket 237. As shown in FIG. 25, the third deck 250 is configured to be slidable with respect to the second bracket 237 in the lateral direction of the airframe, and projects outward from the lateral outer end of the fuel tank 230. A pipe member along the front-rear direction of the machine body is provided at the right end of the body of the third deck 250. The front end portion of the pipe member inclines laterally inward toward the front side in a plan view. Further, the rear end portion of the pipe member is inclined laterally and inwardly toward the rear side in a plan view. In the third deck 250, when the operator slides the pipe member along the lateral direction of the machine body, the pipe member is moved closer to the second bracket 237 and the pipe member is moved to the outside of the machine body than the storage position. It is configured so that the overhanging position and the overhanging position can be changed. With the third deck 250 located at the overhanging position, the operator can lock or unlock the pair of upper and

lower snap locks

244A and 244A, for example, by riding on the third deck 250. The third deck 250 shown in FIG. 22 is located in the storage position. The third deck 250 shown in FIG. 23 is located at the overhang position.

As shown in FIGS. 24 and 26, both ends of a pair of left and right connecting

rods

252 and 252 are connected to the rear portion of the second bracket 237 and the first deck 226, respectively. The connecting

rods

252 and 252 extend in the vertical direction over the rear portion of the second bracket 237 and the first deck 226. A locking frame 253 is welded and fixed to the lower part of the connecting

rods

252 and 252.

As shown in FIG. 28, a locking portion 253A capable of locking the steps of the ladder 228 from above and below is provided at the rear end portion of the locking frame 253. The locking portion 253A is formed in a U shape in a side view, and the U-shaped locking portion 253A sandwiches the step of the ladder 228 from above and below. A pair of upper and

lower holes

253h and 253h are formed at the rear end of the locking portion 253A, and a locking pin 254 is inserted into the pair of upper and

lower holes

253h and 253h. As a result, the step of the ladder 228 is locked so as not to come off from the locking portion 253A. From this, the ladder 228 is locked at two upper and lower positions, the recess 226h of the support portion 226A and the locking portion 253A of the locking frame 253. The steps indicated by

reference numerals

228A and 228B in FIG. 28 are shown as a part of a plurality of steps provided on the ladder 228. The step indicated by reference numeral 228A is a step located higher than the step indicated by reference numeral 228B.

When climbing the first deck 226, the worker touches the lower end of the ladder 228 to the ground or brings it closer to the ground. The operator hooks the upper step of the ladder 228 (the step indicated by reference numeral 228A in FIG. 28) into the recess 226h of the support portion 226A and the step in the upper and lower central region of the ladder 228 (indicated by reference numeral 228B in FIG. 28). Step) is locked to the locking portion 253A. At this time, the lower end of the ladder 228 is grounded or is located, for example, at a height within 20 cm from the ground. The position of the ladder 228 at this time is the used position, and the ladder 228 at the used position is shown in FIG. 27. Also, when harvesting is done, the ladder 228 is tidied up away from the ground. In this case, the operator hooks the step in the upper and lower central region of the ladder 228 (the step indicated by reference numeral 228A in FIG. 28) to the recess 226h of the support portion 226A and the step below the ladder 228 (at reference numeral 228B in FIG. 28). The indicated step) is locked to the locking portion 253A. As a result, the ladder 228 is separated from the ground and located above the used position. The position of the ladder 228 at this time is the storage position. In this way, the ladder 228 is configured so that the vertical position can be changed between the use position and the storage position.

[Another Embodiment of the Third Embodiment]
The present invention is not limited to the configurations exemplified in the above-described embodiments, and the following, typical alternative embodiments of the present invention will be exemplified.

(1) In the above-described embodiment, the cooling device 225 is a unit in which the intercooler 225A, the radiator 225B, and the oil cooler 225C are integrally integrated, but is not limited to this embodiment. For example, the intercooler 225A, the radiator 225B, and the oil cooler 225C may be separately configured. Further, the cooling device 225 may be a unit in which the intercooler 225A, the radiator 225B, and the oil cooler 225C are integrally integrated.

(2) The upper portion of the cooling device case 231 is supported by the frame 221F of the engine bonnet 221, but the present invention is not limited to this embodiment. For example, the upper portion of the cooling device case 231 may be supported by the threshing device 204 or the grain tank 205.

(3) In the above-described embodiment, the first bracket 234 may be extended from the upper part of the threshing device 204 to the laterally outer side of the machine body, but the first bracket 234 may not be provided. In this case, the lower portion of the cooling device case 231 may be supported by the second bracket 237 or the fuel tank 230.

(4) In the above-described embodiment, the fuel tank 230 is provided below the cooling device 225, but the fuel tank 230 is not provided below the cooling device 225 but is provided at another location. Is also good. In this case, the lower end of the cooling device 225 may be extended to the height position of the airframe frame 238.

(5) In the above-described embodiment, the vertical frame 239 connects the horizontal outer end of the first bracket 234 and the horizontal outer end of the second bracket 237, but the vertical frame 239 is not provided. There may be.

(6) In the above-described embodiment, the first reserve tank 247 and the second reserve tank 248 are fixed to the upper frame 231U of the cooling device case 231, but the present invention is not limited to this embodiment. For example, the first reserve tank 247 and the second reserve tank 248 may be supported on the upper part of the front frame 231F or may be supported on the upper part of the rear frame 231R. Further, the first reserve tank 247 and the second reserve tank 248 may be supported in a place other than the cooling device case 231. In addition, the first reserve tank 247 and the second reserve tank 248 may be supported by being divided into any two of the upper frame 231U, the front frame 231F, and the rear frame 231R.

(7) In the above-described embodiment, the stay 231S projects rearward from the rear frame 231R, and the air cleaner 224 is mounted and supported on the upper portion of the stay 231S, but the present invention is not limited to this embodiment. The air cleaner 224 may be supported by the upper frame 231U or may be supported by the front frame 231F. Further, the air cleaner 224 may be supported in a place other than the cooling device case 231. Further, the air cleaner 224 may be provided so as not to overlap with the first deck 226 in a plan view.

(8) In the above-described embodiment, the cooling device 225 and the fuel tank 230 are provided on the right side of the machine body with respect to the engine 206 and the grain removal device 204, but the cooling device 225 and the fuel tank 230 are the engine 206 and the grain removal device. It may be provided on the left side of the machine with respect to 204.

(9) The arrangement height of the first deck 226 and the arrangement height of the second deck 227 described above may be the same or substantially the same. In this case, the cooling device 225 may be configured not to extend below the lower end of the engine 206.

(10) The first deck 226 and the second deck 227 described above may be integrally configured. That is, the first deck 226 may be configured to be used during maintenance work on the cooling device 225 and also during maintenance work on the engine 206.

(11) In the above-described embodiment, the refueling pipe 249 passes through the range of the width of the fuel tank 230 in the lateral direction of the cooling device 225, but is not limited to this embodiment. The refueling pipe 249 may be out of the range of the airframe width of the fuel tank 230. Further, the refueling pipe 249 is extended to a position higher than the first deck 226, but if the configuration allows refueling from the first deck 226 to the refueling port 249A of the refueling pipe 249, the refueling port The 249A may be lower than the first deck 226.

(12) In the above-described embodiment, the capacitor 246 is supported by the dust-proof cover 244, but the present invention is not limited to this embodiment. For example, the condenser 246 may be supported by the cooling device case 231. Further, the condenser 246 may be incorporated as a part of the cooling device 225. Further, the unit may be a unit in which the condenser 246 and the fuel cooler 251 are integrally configured.

(13) In the above-described embodiment, the third deck 250 is provided at a position lower than the fuel tank 230 so as to project to the lateral side of the machine body from the fuel tank 230. The third deck 250 is provided with the fuel tank 230. It may be configured so as not to project to the lateral outside of the aircraft. Further, the third deck 250 may not be provided.

(14) In the above-described embodiment, a fuel filter 240, a fuel separator 241 and a fuel pump 242 are provided as engine auxiliary equipment between the ladder 228 and the fuel tank 230 below the first deck 226. , Not limited to this embodiment. These engine accessories may be configured to be provided in another region other than below the first deck 226 (for example, the region between the fuel tank 230 and the threshing device 204).

Note that the configurations disclosed in each of the above embodiments (including other embodiments, the same shall apply hereinafter) can be applied in combination with the configurations disclosed in other embodiments as long as there is no contradiction. Further, the embodiments disclosed in the present specification are examples, and the embodiments of the present invention are not limited to these, and can be appropriately modified without departing from the object of the present invention.

The present invention can be used not only for ordinary combine harvesters but also for various work vehicles such as head-feeding combine harvesters, corn harvesters, rice transplanters, tractors, and construction work vehicles. Further, the present invention can be applied not only to a wheel type work vehicle but also to a crawler type or semi-crawler type work vehicle.

Further, the present invention can be used not only for wheel type combine harvesters but also for crawler type or semi-crawler type combine harvesters.

(First Embodiment)
6 Engine 7 Device support 13 Tension mechanism 26 Flywheel 28 Regulator 33 Exhaust processing device 35 Engine output shaft 43 Flywheel housing 44 Bearing case 44a Holding 44b Case 45 Bearing 50 Output rotating body 63 First endless rotating body (endless) Rotating body)
64 Second endless rotating body 65 Tension wheel 66 Arm 71 First support part 72 Second support part A combine (work vehicle)

(Second Embodiment)
101f 1st frame 102f 2nd frame 104 Threshing device 105 Grain tank 106 Engine 110 Deck 111 Cutting unit 133 Exhaust treatment device 135 Engine output shaft 136 Cooling device (radiator)
137 Cooling fan 138 Dustproof cover 140 Exhaust cover 141 Main body 143 Opening and closing 150 Bonnet 151 Frame body (base)
151a Rear opening 151b Front upper opening (front opening)
151c Lower front opening (front opening)
152 Top plate 153 Maintenance mechanism 170 Intake unit 174 Cleaner (air cleaner)
A1 combine G transmission mechanism P11 1st swing shaft core P21 2nd swing shaft core

(Third Embodiment)
202 Cabin 203 Driving part 204 Grain removal device 206 Engine 221 Engine bonnet 221F Frame 224 Air cleaner 225 Cooling device 226 First deck 227 Second deck 228 Ladder 230 Fuel tank 231 Cooling device case 234 First bracket 237 Second bracket 239 Vertical frame 240 Fuel filter (engine auxiliary equipment)
241 Fuel separator (engine auxiliary equipment)
242 Fuel pump (engine auxiliary equipment)
244 Dustproof cover 246 Condenser 247 First reserve tank (reserve tank)
248 Second reserve tank (reserve tank)
249 Refueling pipe 249A Refueling port 250 Third deck

Claims

With the engine
The engine output shaft, which is the output shaft of the engine,
A bearing case that holds the bearing and covers at least a part of the engine output shaft.
An exhaust treatment device for purifying the exhaust gas discharged from the engine is provided.
The engine output shaft is supported by the bearing case via the bearing.
An output rotating body that rotates integrally with the engine output shaft is attached to a portion of the engine output shaft that is opposite to the engine with respect to the bearing.
A device support portion supported by the bearing case is provided.
The exhaust treatment device is a work vehicle supported by the device support portion.
A flywheel attached to a portion of the engine output shaft on the engine side with respect to the bearing,
A flywheel housing, which is arranged between the engine and the bearing case and accommodates the flywheel, is provided.
The work vehicle according to claim 1, wherein the bearing case is supported by the flywheel housing.
The bearing case includes a holding portion that holds the bearing and a case portion that is located between the holding portion and the flywheel housing in the extending direction of the engine output shaft and covers at least a part of the engine output shaft. Have,
The case portion has a shape that expands toward the side closer to the flywheel housing.
The work vehicle according to claim 2, wherein the device support portion is supported by the case portion.
The work vehicle according to claim 3, wherein the device support portion is supported on the upper portion of the case portion.
The exhaust treatment device is arranged so that the longitudinal direction of the exhaust treatment device intersects the extending direction of the engine output shaft in a plan view.
The device support portion has a first support portion and a second support portion different from the first support portion.
The work vehicle according to any one of claims 1 to 4, wherein the position of the first support portion and the position of the second support portion are different in the longitudinal direction of the exhaust treatment device.
An endless rotating body wound around the output rotating body and
A tension mechanism for applying tension to the endless rotating body is provided.
The tension mechanism has a tension ring that contacts the endless rotating body and an arm that supports the tension ring.
The work vehicle according to any one of claims 1 to 5, wherein the arm is supported by the device support portion in a swingable state.
A first endless rotating body that is wound around the output rotating body and extends in a predetermined direction from the output rotating body, and
A second endless rotating body that is wound around the output rotating body, is arranged on the engine side with respect to the first endless rotating body, and extends from the output rotating body in a direction different from the predetermined direction.
It is provided with a regulating portion that extends along the second endless rotating body and regulates the displacement of the second endless rotating body in a direction orthogonal to the rotation direction of the second endless rotating body.
The work vehicle according to any one of claims 1 to 6, wherein the regulation unit is supported by the device support unit.
A cutting section that cuts the planted culm in the field,
A threshing device that threshes the cut grain culms cut by the cutting section, and
A grain tank located above the threshing device and storing grains that have been threshed by the threshing device.
An engine located above the threshing device and behind the grain tank,
An exhaust treatment device that is located on one side and outside of the engine in the left-right direction and that processes the exhaust gas discharged from the engine.
An exhaust cover that covers the exhaust treatment device from one side in the left-right direction of the aircraft,
A radiator located on the other side of the engine in the left-right direction and outside
A cooling fan located on the other side of the engine in the left-right direction and cooling the radiator.
A dustproof cover that covers the radiator and the cooling fan from the other side in the left-right direction of the machine and prevents dust from entering the radiator and the cooling fan.
With a bonnet surrounding the engine,
The bonnet has a top plate located above the engine.
The grain tank and the engine are arranged so as to be adjacent to each other in the front-rear direction.
A combine in which a rear opening for communicating the inside and outside of the bonnet is provided at the rear end of the bonnet.
It is located behind the engine and has a deck that workers can use as a scaffold.
The engine and the deck are arranged so as to be adjacent to each other in a plan view.
The combine according to claim 8, wherein the top plate is configured so that the state can be changed between an open state in which the upper part of the bonnet is opened and a closed state in which the upper part of the bonnet is closed.
The bonnet has a base that supports the top plate.
The front end portion of the top plate is supported by the base portion in a state where it can swing around the first swing axis along the left-right direction of the machine body.
The top plate is configured so that the state can be changed between the open state and the closed state by swinging around the first swing shaft core.
The combine according to claim 9, further comprising a maintenance mechanism for maintaining the top plate in the open state.
The bonnet has a frame body that supports the top plate and surrounds the engine.
The frame body is located at the rear end portion in the upper part of the frame body, and includes a first frame extending in the left-right direction of the machine body.
The combine according to any one of claims 8 to 10, wherein the first frame is removable.
The bonnet has a frame body that supports the top plate and surrounds the engine.
The frame body includes a second frame located above the exhaust treatment device.
The combine according to any one of claims 8 to 11, wherein the second frame is removable.
In addition to the output shaft of the engine, the engine output shaft extending in the left-right direction of the aircraft and
A transmission mechanism for extracting power from the engine output shaft is provided.
The engine output shaft extends from the engine toward the exhaust cover side.
At least a part of the transmission mechanism is arranged at a position sandwiched between the engine and the exhaust cover.
The exhaust cover has an opening / closing portion located at a lower portion of the exhaust cover and a main body portion that supports the opening / closing portion.
The combine according to any one of claims 8 to 12, wherein the upper end portion of the opening / closing portion is supported by the main body portion in a state in which the upper end portion can swing around the second swing shaft core along the front-rear direction of the machine body. ..
It is provided with an intake unit that connects to the engine and supplies air to the engine.
The intake portion is arranged so as to pass through the rear opening.
The combine according to any one of claims 8 to 13, wherein the intake unit has an air cleaner located on the rear side of the bonnet.
The combine according to any one of claims 8 to 14, wherein a front opening for communicating the inside and outside of the bonnet is provided at the front end of the bonnet.
A threshing device that threshes the harvest
An engine installed above the threshing device and
A cooling device provided on the lateral outer side of the engine to cool the engine,
A cooling device case for storing and supporting the cooling device is provided.
The cooling device and the case for the cooling device are a combine that extends below the upper end of the threshing device.
An engine bonnet covering the engine is provided.
The combine according to claim 16, wherein the upper portion of the cooling device case is supported by a frame of the engine bonnet.
A first bracket extending laterally and outwardly from the top of the threshing device is provided.
The combine according to claim 16 or 17, wherein the lower portion of the cooling device case is supported by the first bracket.
A fuel tank provided below the cooling device and
A second bracket that extends from the threshing device to the outside of the machine and mounts and supports the fuel tank.
The combine according to claim 18, further comprising a vertical frame connecting the lateral outer end of the first bracket and the lateral outer end of the second bracket.
A reserve tank for storing the cooling water of the cooling device is provided.
The combine according to any one of claims 16 to 19, wherein the reserve tank is located above the cooling device case and is supported on the upper end of the cooling device case.
It is equipped with an air cleaner that removes dust from the combustion air supplied to the engine.
The combine according to any one of claims 16 to 20, wherein the air cleaner is located behind the cooling device case and is supported on the rear wall of the cooling device case.
A threshing device that threshes the harvest
A cooling device provided on the lateral side of the machine with respect to the threshing device and cooling the engine,
A fuel tank provided above and below the cooling device on the lateral outer side of the machine with respect to the threshing device,
A first deck provided above the rear of the fuel tank and used for maintenance work on the cooling device,
A ladder for ascending and descending from the ground to the first deck is provided.
A combine that is configured such that a refueling pipe for refueling the fuel tank is extended toward the first deck, and the refueling port of the refueling pipe can be replenished from the first deck. ..
The engine is provided above the threshing device and next to the inside of the body of the cooling device.
A second deck provided behind the engine and used during maintenance work on the engine is provided.
The cooling device extends below the lower end of the engine.
The combine according to claim 22, wherein the first deck is arranged at a position lower than that of the second deck.
The combine according to claim 23, which is provided with an air cleaner that removes dust from the combustion air supplied to the engine in a state of overlapping the first deck in a plan view behind the upper part of the cooling device.
Any one of claims 22 to 24, wherein the refueling pipe passes through the range of the body width of the fuel tank in the side of the body of the cooling device and extends to a position higher than the first deck. The combine described in.
With the driver
The cabin that covers the driving unit and
An air conditioner that air-conditions the inside of the cabin,
The condenser for the air conditioner and
A cooling device case that houses and supports the cooling device,
A dustproof cover that covers the cooling device case from the lateral side of the machine body and is supported by the cooling device case so as to be openable and closable is provided.
The combine according to any one of claims 22 to 25, wherein the capacitor is supported on the dust-proof cover.
The combine according to any one of claims 22 to 26, wherein a third deck is provided at a position lower than the fuel tank so as to extend to the laterally outward side of the fuselage from the fuel tank.
The combine according to any one of claims 22 to 27, wherein an engine auxiliary machine is provided between the ladder and the fuel tank below the first deck.