JP7033053B2 - Combine DPF installation structure - Google Patents

Description

The present invention relates to a combine DPF installation structure.

Conventionally, a large combine harvester in which the threshing section is located on the rear left side of the traveling machine table equipped with the pretreatment section and the driver section and the engine and the Glen tank are arranged on the right side for multi-row cutting work is between the threshing section and the Glen tank. A DPF that purifies the exhaust gas discharged from the engine is installed in the space formed in the vehicle, and the outer circumference of the DPF is covered with a ventilation interval by a cover body supported from the traveling platform side. It is already known to configure a DPF device. (For example, Patent Document 1)
The cover body of the DPF device is assembled by assembling the cover body of the DPF device with a plurality of side wall covers attached to the outer periphery of the frame configured by frameworking a large number of support members arranged in the front-rear, left-right, and upper and lower parts. It is configured to surround the entire circumference with many members.

Japanese Patent No. 5360615

The DPF device shown in Patent Document 1 has an advantage that excessive heating of the DPF can be prevented by the cooling air flowing within the ventilation interval of the cover body covering the entire circumference of the DPF.
However, in the DPF installation structure of the above document, since the outer circumference thereof is surrounded by a plurality of covers using many support members, the structure of the cover unit is complicated and the right side cover on the maintenance work side is in the center in the front-rear direction. It is composed of a soft covering structure that does not support the part.
In this type of combine, the worker on the machine stand is in the upper part of the cover body or the central part of the right side cover during the maintenance work in which the grain tank is rotated and retracted outward to open the right side of the threshing part widely. If you put your foot on the cover and ride on it, the cover will be deformed by the load of the foot, narrowing the ventilation interval and hindering ventilation, and keeping heat inside the cover (hereinafter referred to simply as heat retention), such as DPF and cover. There is a drawback that it is accompanied by excessive heating and causes troubles such as stepping on the sensor and harnesses that detect the temperature installed on the outer periphery of the DPF due to the deformation of the cover.
In other words, in this type of DPF installation structure, since the upper part and the middle part of the right side cover attached to the front and rear support members are soft structures, it is not assumed that the operator will put them on their feet, or it is a prohibited measure. Therefore, in this combine, it is customary to display "Strictly prohibited footing" or the like on the DPF device in order to avoid footing troubles.
Therefore, when a worker who rotates and retracts the Glen tank outward during maintenance work and gets on the machine stand suddenly thinks of cleaning or inspecting the top plate located at a high place of the threshing part. However, the above cautionary note is easily overlooked, and it may be unavoidable for the operator to get on the cover body of the DPF device and perform maintenance work at a high place in a foot-mounted posture.
On the other hand, when performing maintenance work at a high place while strictly observing the above precautionary statements, the work is done while preparing a stepping stone of a predetermined height in advance, so be careful and take measures to avoid footrest troubles. There are also problems such as complicated and inefficient maintenance work.

In order to solve the above problems, the present invention firstly comprises a threshing section 6 on the rear left side of the traveling machine table 4 provided with the pretreatment section 5, an engine 11 surrounded by a driving section 7 and an engine cover 10 on the right side, and a grain tank. A DPF 25 for purifying engine exhaust gas is arranged in the front-rear direction in a space portion S formed between the threshing portion 6 and the grain tank 8 in which the 8 is arranged, and a ventilation interval is provided on the outer periphery of the DPF 25. In the combine DPF installation structure in which the cover body 27 for covering is provided.
A support member 31 for attaching a cover is erected on the right side of the DPF 25 from the traveling machine base 4, and the cover support arm 31a is cantilevered upward from the support member 31 and the tip thereof. By providing a cover receiving member 32 that comes into contact with the cover body 27 in the front-rear direction along the inner surface of the cover body 27, the load applied to the cover body 27 at the time of foot placement is shared and supported by the DPF 25 via the cover receiving member 32. It is supposed to be.
Second, the cover receiving member 32 is made into a strip-shaped plate, and a support gap H capable of insulating heat is formed between the lower side surface of the plate front-rear length of the cover receiving member 32 and the DPF 25, so that the cover support arm 31a has a support gap H. It is characterized by supporting.
Third, the front and rear portions of the DPF 25 are supported from the traveling machine base 4 side via a DPF mounting member 29 having a mounting interval in the front-rear direction, and support members 31 are erected on the front and rear DPF mounting members 29. The upper end of the cover support arm 31a is connected to each other by the cover receiving member 32.

According to the invention according to claim 1, a DPF for purifying engine exhaust gas is arranged in the front-rear direction in a space formed between a grain removal portion and a grain tank, and a ventilation interval is provided on the outer periphery of the DPF. In the DPF installation structure of the combine in which the cover body is provided to cover the DPF, a support member for mounting the cover is erected on the right side of the DPF from the traveling machine stand side, and the cover support arm is directed above the DPF on the upper part of the support member. By projecting in a cantilever shape and providing a cover receiving member at the tip thereof that abuts in the front-rear direction along the inner surface of the cover body.
The airflow that enters within the ventilation interval formed between the cover body and the DPF is rectified without being obstructed by the cover receiving member to promote discharge, and the load when the operator puts the foot on the cover body is covered. Since the receiving member is shared and supported by the DPF while preventing the cover body from being deformed, the DPF device can be made into a rigid body structure having a simple and inexpensive structure, and the reinforcing part can also be used as a stepping stone, so that the grain removal part can be used. Maintenance work at high places such as the above can be performed efficiently and easily.
According to the second aspect of the present invention, the cover receiving member is made into a strip-shaped plate, and a support gap capable of insulating heat is formed between the lower side surface of the plate front-rear length of the cover receiving member and the DPF to support the cover. By supporting it on the arm
The cover receiving member provided with a support gap with respect to the DPF regulates direct heat conduction to prevent excessive overheating of the cover body, and at the same time, when the foot is placed, the lower side surface of the cover receiving member is pressed through the cover body. It can be supported by contacting it with the DPF and sharing the load.
According to the third aspect of the present invention, the front and rear portions of the DPF are supported via a DPF mounting member having a mounting interval in the front-rear direction from the traveling machine base side, and support members are supported on the front and rear DPF mounting members. By standing upright and connecting the upper ends of the cover support arm with cover receiving members,
A piece for fastening the cover support arm of each support member with the support members standing on the right front and back attached with strength to the DPF mounting member that stably mounts and fixes the front, rear, left and right sides of the DPF to the traveling machine stand. Since the footrest load received by the holding cover receiving member is shared and supported by the DPF, the unit rigidity can be increased while the structure of the cover unit that stably supports the cover body is simple, lightweight and inexpensive, and maintenance is possible. It can also be used as a stepping stone during work.

It is a right side view of the combine. It is a rear view which shows the main part of the DPF installation structure of a combine. It is a rear perspective view which shows the whole structure of a DPF device. It is a rear perspective view which shows the structure of the DPF device which removed the cover body of FIG. It is a right side view of the DPF device. It is a left side view of the DPF device. It is a front view which shows the DPF device partially broken.

An embodiment of the present invention will be described with reference to the drawings. In FIGS. 1 and 2, reference numeral 1 is a combine having an installation structure (DPF installation structure) of the DPF device 2 according to the present invention.
In this combine 1, the pretreatment section 5 and the working sections such as the threshing section 6 are arranged in the front-rear direction on the traveling machine base 4 having the crawler type traveling device 3, and the working sections such as the pretreatment section 5 and the threshing section 6 are arranged in the front-rear direction on the right side of the threshing section 6. The driving unit 7 and the grain tank 8 are arranged. The driver's seat 9 of the driver's unit 7 is installed on the engine cover 10 formed in a box frame shape on the traveling machine table 4.

With this configuration, the DPF device 2 is installed behind the engine cover 10 in the space portion S formed between the threshing portion 6 and the grain tank 8 by the DPF installation structure described later.
The engine cover 10 is configured to form and surround the engine 11 mounted on the traveling machine base 4 by forming a cooling air passage, and the engine cover 10 thereby receives the cooling air taken in from the right side wall in the rear space portion S. It cools the engine while discharging toward.
Further, the cooling air sent from the engine cover 10 side and passing through the space S is discharged rearward after cooling the DPF device 2.

The combine 1 having the above configuration supplies the grain culms cut by the pretreatment section 5 to the threshing section 6, and the grains selected by the threshing section 6 are erected along the right side threshing section machine wall 6a. It is supplied and stored in the grain tank 8 from the upper part by the grain tube 8a.
Next, the grains contained in the grain tank 8 are discharged to the outside of the machine by the operation of the grain discharge auger 13, and a series of combine operations are performed.

The driving unit 7 is connected to a front driving panel unit 7b that is erected laterally on the front side of the driving unit floor 7a and the front driving panel unit 7b, and is connected to the front driving panel unit 7b in the front-rear direction on the left side of the driving unit floor 7a and the driver's seat 9. The side operation panel unit 7c erected in the above is configured in an L shape in a plan view, and the discharge auger operation unit 15 for operating the grain discharge auger 13 and the like is arranged behind the driver's seat 9. ..

The grain discharge auger 13 is connected to a vertical auger 16 erected on a running machine stand 4 having a substantially grain tank height at the rear of the grain tank 8 and to the upper part of the vertical auger 16 via a swivel tilting mechanism 17. It consists of a horizontal auger 19.
Then, the lateral auger 19 can be swiveled and tilted via the swivel tilting mechanism 17 based on the operation of the discharge auger operation unit 15, and the grain discharge at a desired position is performed by the rotation of each internal spiral body. Can be done.

The grain tank 8 is a box-shaped tank having a plan view shape, and a funnel-shaped gutter portion is focused and formed by the inclined bottom wall 20 (see FIG. 2) on the back side (left side) of the machine body and the inclined bottom wall 20a on the right side. , The grain transport auger 21 is mounted along the inside of the gutter. The grain transport auger 21 has a shaft rear end connected to the base of the vertical auger 16, and a driven pulley (not shown) provided at the shaft front end can be transmitted and switched by a belt transmission device provided with a tension clutch or the like.

Further, the grain tank 8 has the rear wall 8b side rotatably attached to the vertical auger 16 on the vertical axis, and the vertical auger 16 is centered from the grain storage work position in a state where the belt connection with the belt transmission device is released. By rotating and retracting to the side (right side), the posture can be changed to the maintenance work position where the right side of the threshing unit 6 is largely released.
That is, when the Glen tank 8 is put into the maintenance work posture, the space portion S and the upper part of the traveling machine stand 4 are greatly opened apart from the threshing section 6 and the engine cover 10, so that the right side of the threshing section machine wall 6a and various transmission mechanisms are used. 6b and the DPF device 2 can be exposed to form a sufficient work space for maintenance work such as inspection and repair and cleaning thereof.

Next, in the configuration of the combine 1 shown in FIGS. 1 and 2, the installation structure of the DPF device 2 installed on the traveling machine base 6 of the space portion S will be described with reference to FIGS. 3 to 7.
The DPF device 2 is arranged in the space portion S at a position approximately intermediate between the front and rear lengths of the threshing portion 6 in a side view so that maintenance work in the vicinity can be easily performed, and can also be used as a stepping stone during high-altitude maintenance work. Configured to be available.

First, the DPF 25 adopted in the present embodiment is a horizontally long cylindrical body having a filter structure similar to that of a diesel particle removing device used in trucks, tractors, etc., and is extended from the left side to the rear at the upper part of the engine 11. It is connected to the exhaust manifold 24 and burns while adhering particulate matter contained in the exhaust gas to the internal filter, and can be discharged from the rear as clean exhaust gas.
In addition, the DPF 25 is a state in which sensors such as a front position sensor 25s, a middle position sensor 25s, and a rear position sensor 25s for detecting the internal temperature and a pressure sensor for detecting the internal pressure of the main body case are integrated on the right side surface of the cylindrical main body case. Harnesses such as the plurality of sensors 25s and the pressure sensor are gathered together in the wiring portion 25h installed on the outside of the right side case where maintenance work is easy, and are connected to the control device of the control unit from here.

The sensors are protected by the installation structure of the cover unit 30 according to the present invention, which will be described later.
The combine 1 has a reproduction mode switch (not shown) for forcibly rotating the engine 11 at a high speed by operating the engine 11 at any time in the control unit on the driving unit 7 side, and when the engine 11 is idling, Since the engine 11 is controlled to the rated rotation by operating the reproduction mode switch, the temperature inside the DPF 25 is raised by the high temperature exhaust gas to burn particulate matter adhering to the filter at any time to prevent clogging of the filter and exhaust gas. It is trying to maintain the purification treatment performance of.

Further, the DPF 25 is connected to the exhaust manifold 24 of the engine 11 via the intake pipe 24a and covers the exhaust pipe 26 connected to the exhaust port 26a of the DPF 25 and the main body of the DPF 25, similarly to the conventional one. It is composed of a roof box-shaped cover body 27, a cover frame 28 that mounts and supports the cover body 27 from the traveling machine base 4, and a DPF mounting member 29 that mounts and supports the front and rear portions of the DPF 25 on the traveling machine base 6. There is.

The cover unit 30 that can be placed on the foot as a stepping stone (scaffolding) is configured by assembling a cover body 27 composed of a right side cover 27a and a left side cover 27b to the cover frame 28. The right side cover 27a of the cover body 27 is made larger than the slope length of the left side cover 27b so as to be a stepping stone surface having a front-rear width and left and right slope lengths on which the foot can be placed, and the entire upper side of the DPF 25 is a roof box body described later. Depending on the structure, it has strength and covers it.

Next, the installation structure and assembly of the DPF 25, the DPF mounting member 29, and the cover unit 30 will be described.
First, in the DPF 25 of the illustrated example, a plurality of outer peripheral frames (reinforcing frames) 25a are projected from the cylindrical case body in a fitted state with a mounting interval in the front-rear direction.
The DPF mounting member 29 is a plate-shaped member having a reverse trapezoidal shape as shown in FIGS. A case mounting portion that allows the outer peripheral frame 25a to be bolted can be fixed on the upper side, and a mounting portion 29a that detachably mounts the cover unit 30 on the left and right sides. (Fig. 7)

As a result, the DPF mounting member 29 has a base function of fastening the front and rear outer peripheral frames 25a to stably position and fix the DPF 25 in a state of being erected on the machine base frame 4a in pairs in the front and rear, and left and right mounting portions. By configuring the 29a to play the support member 31 of the cover unit 30 and the support column function for mounting and supporting the left side cover 27b as described later, the configuration of the DPF device 2 and the installation work can be simplified. ing.

The cover frame 28 of the cover unit 30 is provided with a support member (leg support) 31 erected on the right side mounting portion 29a of each DPF mounting member 29, and is provided on the upper portion thereof in a tangential direction toward the upper periphery of the DPF 25. It is composed of a cover support arm 31a that is extended to support the right side cover 27a, and a cover receiving member 32 that connects the free end sides of the front and rear cover support arms 31a in the front-rear direction.

The cover frame 28 of the illustrated example is provided with mounting holes for bolt insertion at the lower and upper portions of the leg strut portion having an L-shaped cross section, which is the leg portion of the support member 31, and the cover support arm 31a formed on the upper portion of the leg strut. By attaching a cover receiving member 32 made of a strip-shaped plate or a pipe material having a length in the front-rear direction of the cover to the attachment portion formed at the end of the cover so as to face the DPF side, the cover is viewed in a plan view as a whole. It is configured to be a frame of shape.

The cover receiving member 32 in the illustrated example is formed into a strip-shaped plate that is long in the front-rear direction, and is located near the upper side of each sensor 25s that is centrally arranged on the upper left and right sides of the right outer peripheral surface (maintenance work front side) of the DPF 25. As such, they are installed in a vertical posture in the radial direction (direction extending radially from the central axis of the DPF 25) via the cover support arm 31a of the front and rear support members 31. As a result, the cover receiving member 32 temporarily receives the downward fall of dust entering the ventilation interval (air passage) formed between the cover body 27 and the DPF 25 by the vertical plate surface, and regulates the fall while controlling the air flow. It is possible to promote backward movement discharge by (wind) and effectively prevent dust from adhering to the sensors 25s.

In this configuration, the rear cover support arm 31a approaches the rear position sensor 25s from the rear, and the front cover support arm 31a approaches the middle position sensor 25s from the rear, whereby the cover receiving member 32 and each cover support arm 31a Each sensor 25s is positioned so as to be protective in each corner formed by.
Further, the front portion of the cover receiving member 32 is extended and brought closer to the front position sensor 25s disposed in the vicinity of the intake pipe 24a, separated forward from the front cover support arm 31a, by the extension portion. I try to protect the sensor.
As a result, the cover unit 30 includes the cover receiving member 32 and the cover of the portion forming the corner portion when the cover body 27 is recessed and deformed due to, for example, an excessive stepping load, a footrest load, or a falling load of an instrument. The support arm 31a minimizes deformation in the vicinity thereof to ensure protection of each sensor 25s, and the front position sensor 25s is protected by preventing the cover deformation by the extension portion of the cover receiving member 32.

Then, the cover unit 30 is a simple, lightweight and inexpensive cover frame 28 having a simple structure in which the cover support arms 31a of the support members 31 erected from the front and rear DPF mounting members 29 are connected by the cover receiving member 32. In addition to being able to do so, there are advantages such as being able to reliably avoid damage to the sensor 25s.
It is desirable that the length of the cover receiving member 32 is longer from the support position by the cover support arm 31a on the front side toward the front. In this case, the engine cooling air exhausted rearward is provided in front of the DPF 25. It is possible to sort the DPF 25 to the left and right according to the position of the part, guide it to the rectified state by the strip surface, efficiently cool the DPF 25, and smooth the rear discharge without heat buildup.

As shown in FIGS. 4 and 7, when the support members 31 are erected on the DPF mounting member 29 by bolting, the cover support arm 31a provides a ventilation interval in the outer peripheral tangential direction of the DPF 25. The lower side surface of the cover receiving member 32 is separated from the upper surface of the outer peripheral frame 25a by several millimeters as a distance that can be contacted with the outer peripheral frame 25a as described later when the foot is placed. It is supported in a cantilevered state in which a support gap H is formed.
That is, the cover unit 30 is directly separated from the DPF 25 because the cover receiving member 32 has the support gap H and is separated upward from the outer peripheral frame 25a in the normal use state in which the cover frame 28 is attached. As a result of the regulation of heat conduction, excessive overheating of the cover body 27 can be efficiently prevented by a simple configuration.

Then, when the operator puts his foot on the cover body 27 and rides on it, the cantilevered cover support arm 31a via the cover body 27 and the cover receiving member 32 due to the load applied from above at that time. Since the support gap H is elastically flexed to the position where it abuts on the frame 25a and the footrest load is shared and supported by the direct contact between the cover receiving member 32 and the outer peripheral frame 25a of the DPF 25, the support member 31 and the left side cover It is possible to reduce an excessive load on the 27b side.

Therefore, the rigidity of the cover unit 30 can be increased while the structure of the cover unit 30 is simple, lightweight, and inexpensive, and the function of the stepping stone during maintenance work is sufficiently exerted. It makes it possible to perform maintenance work efficiently while eliminating the trouble of preparing another step.
Further, when the cover receiving member 32 is manufactured of a thin iron plate, it is desirable to form the lower end portion of the strip-shaped plate in an L-shape or a U-shape. The outer peripheral frame 25a can be contacted and stably supported without stress concentration.

On the other hand, in the cover body 27, the lower end of the right side cover 27a is bolted to the upper part of the leg strut of the support member 31, and the lower end of the left side cover 27b is bolted to the left side mounting portion 29a of the DPF mounting member 29. The cover connecting portion 27c is formed by fastening the connecting pieces formed to be bent on the upper end and the front side of both of them with a plurality of bolts 33 in a state where the connecting pieces are butted against each other.
When the cover body 27 is assembled to the cover frame 28, the cover body 27 can have a rigid structure having a chevron roof shape in a front view in which the right side cover 27a and the left side cover 27b are joined to each other to support each other.

The right side cover 27a and the left side cover 27b have substantially the same angle of repose, can promote the sliding of dust and prevent the adhesion of straw dust and the like to the roof surface, and the left and right and the lower side of the DPF 25 are open. Since the state is reached, heat retention due to heat stagnation in the cover unit 30 of the DPF device 2 can be prevented by a simple configuration.

In addition, when a worker steps on the substantially center of the roof width during maintenance work, even if the area of the right side cover 27a is small, the cover connection portion 27c on the top is stepped on by the toe side of the shoe with at least one foot. Then, the worker can efficiently perform the desired maintenance work of the upper part by, for example, putting the upper body in a stable posture leaning against the threshing part 6 side.

That is, this DPF device 2 is deformed into a treading portion of the cover body 27 because the cover connecting portion 27c protrudes like a rib to form a rigid structure and the cover receiving member 32 in the vicinity shares and supports most of the load. The cover connection part 27c is in contact with the toe side of the shoe sole as a linear protrusion to prevent slipping, so that it can withstand a large load without causing an angle of repose, so it demonstrates the stepping function without hindrance even though it is a slope with an angle of repose. There are features such as

Next, the usage mode and operation of the DPF installation structure configured as described above will be described.
In this DPF device 2, a support member 31 is erected on the right side of the DPF mounting member 29 for mounting the DPF 25 installed in the space S, and a cover support that projects cantilevered in the outer peripheral tangential direction of the DPF 25 at the upper portion thereof. A cover receiving member 32 is provided at the tip of the arm 31a, and the cover frame structure is formed in which the inner surface of the cover body 27 is supported from the DPF25 side in the front-rear direction by the cover receiving member 32, so that the cooling air sent from the engine 11 can be received. It prevents heat buildup while smoothly passing through the ventilation interval, prevents excessive overheating of the DPF 25 and the cover body 27, and makes it possible to use the DPF installation structure as a stepping stone while making it a simple and inexpensive rigid structure. ..

In the DPF device 2 having the above configuration, the cover receiving member 32 is used as a strip-shaped plate, and the cover supporting arm is held so as to hold a support gap H of about several millimeters capable of insulating the lower side surface of the plate front-rear length from the outer periphery of the DPF 25. By supporting the 31a, the DPF device 2 thereby restricts direct heat conduction by the air flow in the support gap H, so that excessive overheating of the cover body 27 can be reliably prevented.

Further, the cover receiving member 32 made of a strip-shaped plate divides the airflow entering within the ventilation interval between the right side cover 27a and the DPF 25 in the vertical direction to facilitate the rectification state, and allows the invading dust to flow along the vertical plate surface. While receiving it, it is possible to promote the induced discharge to the rear to ensure the prevention of dust adhesion, and to promote the cooling of the outer periphery of the DPF 25 and the cover body 27.
At this time, dust such as straw dust that falls on the cover body 27 and is about to accumulate is discharged toward the rearward fall due to the angle of repose and the wind flow.

Then, when the maintenance work performed on the traveling machine table 4 in which the Glen tank 8 is rotated and retracted requires the maintenance work at a high position such as the threshing section 6, the operator is a stepping stone as in the conventional one. By immediately using the DPF device 2 as a stepping stone and putting one foot or both feet on the right side cover 27a side without preparing the DPF device 2, maintenance work at a desired high position can be efficiently performed by using the stepping stone of the DPF device 2. ..

Further, in the stepping platform use work, the cover receiving member 32 that is cantilevered from the support member 31 makes the support gap H zero by the footrest load applied to the right side cover 27a, and the load of this portion is supported by the rigid structure. Since it is directly transmitted to the DPF 25 and shared and supported as a reinforcing portion, it is possible to efficiently perform the desired maintenance work with a stable working posture while preventing deformation of the cover body 27.

The cover receiving member 32 in the illustrated example is made of an iron plate in order to reduce the weight, but the cover receiving member 32 may be formed of a pipe member or the like without limitation. Further, the cover receiving member 32 may be bolted to the outer peripheral frame 25a side if necessary, and in this case, it is preferable to interpose a heat insulating member between the inner surface side of the right side cover 27a and the cover receiving member 32. Is.

1 Combine 2 DPF device 4 Traveling machine stand 5 Pretreatment section 6 Threshing section 7 Driving section 8 Glen tank 10 Engine cover 11 Engine 25 DPF
27 Cover body 29 DPF mounting member 31 Support member 31a Cover support arm 32 Cover receiving member H Support gap S Space

Claims (3)

The threshing section (6) is on the rear left side of the traveling machine table (4) provided with the pretreatment section (5), and the engine (11) and the Glen tank (8) surrounded by the driving section (7) and the engine cover (10) on the right side. ) Is arranged, and the DPF (25) for purifying the engine exhaust gas is arranged in the front-rear direction in the space portion (S) formed between the threshing portion (6) and the Glen tank (8). In the DPF installation structure of the combine in which the cover body (27) covering the outer periphery of the DPF (25) with a ventilation interval is provided.
A support member (31) for mounting a cover is erected on the right side of the DPF (25) from the traveling machine base (4) side, and a cover support arm (31a) is placed on the upper part of the support member (31) on the DPF (25). By providing a cover receiving member (32) that abuts in the front-rear direction along the inner surface of the cover body (27) at the tip of the cover body (27), the cover body (27) is provided at the tip of the cover body (27). ) Is shared and supported by the DPF (25) via the cover receiving member (32). The cover receiving member (32) is made into a strip-shaped plate, and a heat-insulating support gap (H) is formed between the lower side surface of the plate front-rear length of the cover receiving member (32) and the DPF (25). The combine DPF installation structure according to claim 1, which is supported on the cover support arm (31a). The front and rear portions of the DPF (25) are supported from the traveling machine base (4) side via a DPF mounting member (29) having a mounting interval in the front-rear direction, and a support member is supported by the front and rear DPF mounting members (29). The DPF installation structure of the combine according to claim 1 or 2, wherein each (31) is erected, and the upper end of the cover support arm (31a) is connected to each other by a cover receiving member (32).

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