JP2011135846A - Combine harvester - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a combine harvester capable of suppressing heat radiation of a high temperature discharge gas discharged from an engine and thermally efficiently removing with DPF the particulate in the discharge gas to clean the discharge gas by disposing the DPF on the lower side of a threshing portion and a tank inclination bottom wall of a grain tank and immediately rear the engine. <P>SOLUTION: The combine harvester includes on the rear side of a pretreatment part, a threshing portion on the left side of a travelling body 4, and a driving part, an engine 11 covered with an engine cover and a grain tank 8 on the right side, wherein a DPF 26 for removing particulate contained in the discharge gas is set in a space 29 at a position immediately behind the engine 11 and formed with the threshing portion and the lower side of a tank inclining bottom wall 20 of the grain tank 8. <P>COPYRIGHT: (C)2011,JPO&INPIT

Description

  The present invention relates to a combine provided with a DPF for removing particulate matter in exhaust gas between a threshing portion and a Glen tank.

Generally, the combine arrange | positions the threshing part, the engine enclosed by a driving | running part and an engine cover, and a glen tank on the right and left on the traveling machine stand behind the pre-processing part.
In such a combine, it is known that an engine muffler is connected to a connecting pipe extending from an exhaust manifold and disposed in a space formed between a threshing portion and a tank inclined bottom wall of a Glen tank. (For example, patent document 1).

In trucks, buses, tractors, etc., DPF (particulate matter removal equipment) that purifies the exhaust gas of the mounted engine is replaced with a conventional muffler connected to the connecting pipe, and particulate matter contained in the exhaust gas is connected. The exhaust gas is purified by being burned while being attached to the filter.
A truck or the like having a DPF device as described above generally includes a regeneration mode switch for forced regeneration mode switching for operating the engine in a high rotation range in order to effectively operate the DPF. If necessary, the engine can be rotated at a high speed to increase the exhaust gas temperature, and particulate matter adhering to the filter is completely burned and removed to prevent clogging of the filter and prevent DPF over a long period of time. Enables playback use.

JP 2005-287332 A

In a combine as shown in Patent Document 1, when exhaust gas purification is performed using a DPF used for a truck or the like, the muffler is removed at a position where the muffler is connected to a connecting pipe. It can be used in place of DPF.
In addition, since the combine generally has the maximum rotation range set to the rated rotation during the combine operation, the DPF to be mounted can be effectively heated at all times during the operation to purify the exhaust gas, and the regeneration mode switch is operated. And the operation can be omitted.
However, if the DPF is connected to a long connecting pipe for mounting the muffler, it will be installed at the rear of the aircraft, which is far away from the engine, and the heat loss between them will increase, preventing the DPF from becoming hot and burning particulate matter. There is a problem that efficiency decreases.
Since the DPF is larger than the muffler and heated at a high temperature, if it is installed at the rear position of the fuselage like a conventional muffler, the length of the exhaust pipe connected to the rear of the DPF is limited. However, there is a problem that exhaust gas at a high temperature is released without sufficient heat dissipation.

In order to solve the problem, the combine according to the present invention firstly includes an engine 11 surrounded by a threshing unit 6 on the left side of the traveling machine base 4 and a driving unit 7 and an engine cover 10 on the right side behind the preprocessing unit 5. Further, in the combine 1 in which the Glen tank 8 is arranged, the particulate matter contained in the exhaust gas is formed in the space 29 formed by the threshing portion 6 and the lower portion of the tank inclined bottom wall 20 of the Glen tank 8 immediately after the engine 11. The DPF 26 that removes the substance is arranged.

  Secondly, the exhaust pipe 30 connected to the DPF 26 is characterized by being arranged rearward along the outside of the tank inclined bottom wall 20 in which the grain transport auger 21 of the Glen tank 8 is installed.

  Third, the DPF 26 is housed and covered in a box-shaped cover body 27, and one side of the cover body 27 is switched between the grain storage work position and the side, and the grain of the Glen tank 8 installed to be openable. It is characterized by being installed in contact with the grain storage work position.

  According to the invention of claim 1, by disposing the DPF at the position immediately after the engine below the threshing portion and the tank inclined bottom wall of the Glen tank, the heat dissipation of the high-temperature exhaust gas discharged from the engine is suppressed, and the DPF is used for the thermal efficiency. It is possible to purify exhaust gas by efficiently burning particulate matter at high temperature. Further, since the DPF is surrounded by the operating part and the threshing part below the tank inclined bottom wall, it is possible to prevent adhesion of dust and the like that falls into the gap between the threshing part and the grain tank.

  According to the invention of claim 2, the exhaust pipe connected to the DPF is arranged along the outside of the bottom of the grain tank, so that the heat of the DPF and the exhaust pipe is transferred into the grain tank through the tank inclined bottom wall. In addition, it is possible to promote a smooth grain discharge by promoting the reduction of the moisture content on the grain surface, and to reduce the exhaust gas temperature discharged from the exhaust pipe.

According to the invention of claim 3, by storing the DPF in the cover body, the air in the cover body is confined while being heated by the DPF, and the high temperature state in which the heat release of the DPF is suppressed is maintained and the combustion efficiency of the particulate matter is increased. The exhaust gas can be purified.
The cover body is close to the tank inclined bottom wall when the grain tank installed at the side of the threshing portion so as to be switchable between the grain accommodation work position and the maintenance work position is in the grain accommodation work position. The DPF can be installed in the space through the cover body, and the tank inclined bottom wall can be efficiently heated. Further, when performing maintenance work such as filter replacement of the DPF, the glen tank can be moved to the maintenance work position and the cover body can be exposed, so that maintenance work such as filter replacement can be facilitated.

It is a right view of the combine to which this invention was applied. It is an enlarged side view which shows the structure of the principal part of FIG. It is a side view which shows the state which moved the Glen tank from the grain accommodation work position to the maintenance work position. It is a rear view which shows the arrangement configuration of a Glen tank and a DPF device. It is a rear view which shows the state which moved the Glen tank to the maintenance operation position. It is a perspective view which shows the structure of a DPF apparatus. It is a right view which shows the structure in connection with 2nd Embodiment of a DPF apparatus. It is a perspective view which shows the structure of the DPF apparatus of 2nd Embodiment. It is a right view which shows the structure in connection with 3rd Embodiment of a DPF apparatus. It is a perspective view which shows the structure of the DPF apparatus of 3rd Embodiment.

Embodiments of the present invention will be described with reference to the drawings. 1 and 2, reference numeral 1 denotes a combine equipped with a DPF device 2 according to the present invention, and a pre-processing unit 5 and a threshing unit are added to a traveling machine stand 4 having a crawler type traveling device 3 in the same manner as a conventional one. 6 and the like are arranged in the front-rear direction, and the operation unit 7 and the Glen tank 8 are arranged on the right side of the threshing unit 6 behind the pretreatment unit 5. The driver 7 supports a driver's seat 9 on a traveling machine base 4 on an engine cover 10 configured in a box frame shape. The engine cover 10 is installed in an engine room 10a that forms a cooling air passage. An engine 11 mounted on the base 4 is accommodated.

The combine 1 having the above-described configuration supplies the cereals harvested by the pretreatment unit 5 to the threshing unit 6 through the handling depth transport unit, and the grain that has been threshed and sorted by the threshing unit 6 is housed in the lifting helix. It is supplied into the glen tank 8 from above by the grain cylinder 12 and filled and accommodated. Subsequently, the grain accommodated in the Glen tank 8 can be discharged out of the machine by operating the grain discharge auger 13 to perform a series of combine operations.
The driving section 7 of the combine 1 includes a front driving panel section 7b erected laterally on the front side of the driving section floor 7a, and a left side of the driving section floor 7a and the driving seat 9 connected to the front driving panel section 7b. The side operation panel portion 7c erected in the front-rear direction is configured in an L shape in plan view. And the discharge auger operation part 15 which operates the grain discharge auger 13 grade | etc., Behind the driver's seat 9 is arrange | positioned.

  The grain discharge auger 3 has a vertical auger 16 standing on the traveling machine base 4 at the rear part of the grain tank 8 and a horizontal auger 16 connected to the upper part of the vertical auger 16 via a turning and tilting mechanism 17. It consists of an auger 19. Then, the horizontal auger 19 can be swung and tilted via the swivel tilt mechanism 17 based on the operation of the discharge auger operation section 15, and the grain discharge at a desired position is performed by the rotation of the spirals incorporated in each.

  The Glen tank 8 is a box-shaped tank having a square shape in plan view, and is formed in a funnel shape by an inclined bottom wall 20 (see FIG. 4) on the rear side (left side) of the machine body and an inclined bottom wall 20a on the right side. The grain conveying auger 21 is mounted along the bottom of the Glen tank 8. The grain conveying auger 21 has a shaft rear end connected to the base of the vertical auger 16, and a driven pulley provided at the shaft front end is connected to be able to switch transmission by a belt transmission device provided with a tension clutch or the like.

  Further, the Glen tank 8 has a rear wall 23 side attached to the vertical auger 16 so that the vertical axis can be rotated, and the belt can be moved from the grain accommodating work position shown in FIGS. As shown in FIGS. 3 and 5 in a state in which the belt connection with the transmission device is released, it is possible to change the maintenance work position to the side where the vertical auger 16 is laterally opened and the right side of the threshing portion 6 is largely released. it can. In this maintenance work position, the front side of the Glen tank 8 pivots around the vertical auger 16 and moves away from the threshing portion 6 and the engine cover 10, so that the threshing portion 6 and various transmission mechanisms are adjusted, inspected, repaired, and cleaned. A work space sufficient for maintenance work such as the above can be formed, and the DPF device 2 can be exposed.

  In the above configuration, the combine 1 connects the DPF 26 shown in FIG. 6 to a connecting pipe (exhaust pipe) 25 extending from the exhaust manifold of the engine 11 as shown in FIGS. The DPF 26 is disposed immediately after the engine room 10a in a state where the DPF 26 is accommodated in a box-shaped cover body 27 described later. Further, in the state where the grain tank 8 is in the grain accommodation work position, the cover body 27 is formed in the space 29 formed between the tank inclined bottom wall 20 of the grain tank 8, the right side wall of the threshing part 6 and the traveling machine base 4. Is placed in contact with the tank inclined bottom wall 20. The exhaust pipe 30 extending from the DPF 26 is provided long along the lower part of the traveling machine base 4 so as to reach the vicinity of the rear part of the traveling device 3, thereby promoting heat radiation and exhausting at a low temperature.

The DPF 26 used in the present embodiment is a filter device similar to a commercially available diesel particulate removal device used in trucks, tractors, etc., and can be installed in place of a conventional engine muffler and included in the exhaust gas. The particulate matter can be burned while adhering to the internal filter, and clean exhaust gas can be discharged.
The steering unit 6 of the combine 1 is provided with a regeneration mode switch (not shown) that forcibly rotates the engine 11 at any time by an operation. As a result, when the engine 11 is idling, the combine 1 controls the engine 11 to the rated speed by operating the regeneration mode switch. Therefore, the combine 1 increases the temperature in the DPF 26 with high-temperature exhaust gas and adheres to the filter. The particulate matter that burns is burned at any time to prevent clogging of the filter and maintain the exhaust gas purification treatment performance.

Next, the DPF device 2 and the cover body 27 will be described with reference to FIGS. The cover body 27 that houses and installs the DPF 26 in the space 29 includes a bottom wall 27a that is rectangular in plan view, a front wall 31 that is erected in a substantially triangular shape before and after the bottom wall 27a, and a rear wall. The wall 32 is composed of a right inclined side wall 33 and a left inclined side wall 35 formed so as to connect the right and left oblique sides of the front wall 31 and the rear wall 32, respectively.
As shown in FIG. 4, the front wall 31 and the rear wall 32 have the right oblique side substantially the same as the inclination of the tank inclined bottom wall 20 of the Glen tank 8 and the left oblique side contacted with the upper end corner portion of the tank inclined bottom wall 20. It is formed so as to be steeply inclined or vertical from the position to be.

  As a result, when the cover body 27 is installed on the traveling machine base 4 in the space 29, the right inclined side wall 33 can be brought into contact with the tank inclined bottom wall 20, and the upper end of the left inclined side wall 35 (the apex of the triangle) Can be provided continuously in the vertical direction without projecting greatly from the left vertical wall 36 of the Glen tank 8. Therefore, the cover body 27 can be installed in a housed state by effectively using the space below the tank inclined bottom wall 20 while housing the DPF 26 that is larger than the conventional muffler, and falls from above. Sediment and dust can be quickly slid down by a steeply inclined surface to prevent adhesion and accumulation.

Further, the right inclined side wall 33 and the left inclined side wall 35 that connect the front wall 31, the rear wall 32, and the bottom wall 27a can connect the upper sides of each other to make the cover body 27 an airtight box. In addition, the heat insulation of the DPF room 28 formed in the cover body 27 can be enhanced.
In addition, the cover body 27 can apply and apply a heat insulating material to each wall surface, and in this case, the heat insulating property and the sound absorbing property can be further improved.

Further, as shown in FIG. 6, the cover body 27 forms a flat ceiling wall 37 in which the engine 11 side of the triangular apex portion is lowered one step, and the connecting pipe 25 is formed in a hole formed in the flat surface of the ceiling wall 37. Is inserted and connected to the DPF 26.
The right inclined side wall 33 forms a maintenance opening 39 by notching or drilling a position facing the tank inclined bottom wall 20 of the grain tank 8, and the grain tank 8 accommodates the grain in the opening 39. When in the working position, it is closed and closed by the tank inclined bottom wall 20.

  As a result, the cover body 27 can also be used so that the tank inclined bottom wall 20 serves as a lid for the opening 39, and the structure of the cover body 27 can be made inexpensive, and the glen tank 8 can be brought into the maintenance work position. At this time, the tank inclined bottom wall 20 releases and closes the opening 39, so that maintenance work such as inspection and attachment / detachment of the DPF 26 can be easily and quickly performed from the opening 39. Further, when the grain tank 8 is in the grain accommodation work position, the heat in the cover body 27 can be directly transmitted to the tank sloped bottom wall 20 through the opening 39 and the right sloped side wall 33. The tank inclined bottom wall 20 can be efficiently heated.

The combine 1 provided with the DPF device 2 configured as described above performs the combine operation by simultaneously cutting and threshing the engine 11 at the rated rotation in the high rotation range.
At this time, the combine 1 disposes the exhaust gas exhausted from the engine 11 through the connecting pipe 25 by disposing the DPF 26 immediately below the engine 11 below the threshing portion 6 and the tank inclined bottom wall 20 of the Glen tank 8. Then, after the soot-like particulate matter adhering to the filter in the DPF 26 is subjected to combustion treatment, the treated exhaust gas is discharged from the exhaust pipe 30 toward the rear of the machine body.

The DPF 26 is installed immediately after the engine 11 and can be connected by the short connecting pipe 25. Therefore, the heat release of the exhaust gas can be suppressed and the DPF 26 can be efficiently sent to the DPF 26, and the particulate matter can be efficiently burned at a high temperature. And exhaust gas can be purified.
Also, by housing the DPF 26 in the airtight cover body 27, the DPF 26 confines the air in the cover body 27 while overheating, so that the high-temperature state in which the heat release of the DPF 26 is suppressed is maintained and the combustion efficiency of the particulate matter is increased. The exhaust gas can be purified by purifying the exhaust gas, and the silencing effect can be enhanced by the airtight structure of the cover body 27.

Further, the DPF device 2 is installed on the side of the threshing unit 6 so as to be close to the lower part of the inclined tank bottom wall 20 of the Glen tank 8 that is installed so as to be able to swing and rotate between the grain storage work position and the maintenance work position. Therefore, the tank inclined bottom wall 20 can be heated to promote the reduction of the grain moisture content inside. Moreover, since the DPF device 2 is surrounded by the operation unit 7 and the threshing unit 6 below the tank inclined bottom wall 20, the sawdust that falls into the gap between the threshing unit 6 and the grain tank 8 and the operation unit 7 and the grain tank 8 etc. And falling objects such as dust can be prevented.
Further, when performing maintenance work such as filter replacement of the DPF 26, when the Glen tank 8 is moved to the maintenance work position with the vertical auger 16 as a fulcrum, the entire cover body 27 is exposed when the right side of the threshing portion 6 is largely released. It is possible to facilitate maintenance work. At this time, the cover body 27 can fully open the opening 39, and operations such as inspection and maintenance of the DPF 26 and filter replacement can be efficiently performed from the opening 39.

Next, another embodiment of the DPF device 2 will be described with reference to FIGS. In addition, description is abbreviate | omitted about the structure and effect | action similar to the said embodiment.
First, the DPF device 2 according to the second embodiment shown in FIG. 7 and FIG. 8 is a pipe that accommodates the base side of the exhaust pipe 30 at the right rear side of the DPF room 28 of the cover body 27 similar to that of the above embodiment. The room 28a is integrally extended and provided along the lower side of the tank inclined bottom wall 20 from the DPF room 28 toward the rear.

  That is, the cover body 27 has an extension wall 32a that extends by bending the rear wall 32 in a crank shape in plan view with respect to an extension wall that extends the right side of the bottom wall 27a, and a lower side of the right inclined side wall 33. By connecting the extended wall 33a, an elongated box body and a pipe room 28a having an opening 39a formed in the upper part are provided. The exhaust pipe 30 connected to the DPF 26 is inserted into the through hole of the extension wall 32a and protrudes outside the machine with the base side disposed in the pipe room 28a.

In the DPF device 2 configured as described above, when the cover body 27 is set in the space 29 as in the above-described embodiment, the openings 39 and 39a of the cover body 27 are closed with the tank inclined bottom wall 20. Can be.
Thereby, the DPF device 2 can arrange the exhaust pipe 30 along the outer surface of the bottom of the Glen tank in which the grain conveying auger 21 is housed in a state where the DPF 26 is close to the tank inclined bottom wall 20.

Therefore, the heat of the DPF 26 and the exhaust pipe 30 can be efficiently transferred into the glen tank 8 through the tank inclined bottom wall 20, promoting the smooth drainage of the grain by promoting the reduction of the grain moisture amount, Since heat dissipation is promoted in the pipe room 28a through the long exhaust pipe 30, the exhaust temperature discharged from the exhaust pipe 30 can be reduced.
Further, since the exhaust pipe 30 is covered with the inclined tank bottom wall 20 with the base side accommodated in the pipe room 28a, the intrusion and accumulation of dust and the like on the high temperature exhaust pipe 30 base side is prevented and safety is improved. Can be increased.

The DPF device 2 according to the third embodiment shown in FIG. 9 and FIG. 10 inserts the exhaust pipe 30 of the DPF 26 into the left inclined side wall 35 of the cover body 27 and bends and extends upward, thereby raising the cereal cylinder. 12, the exhaust port of the exhaust pipe 30 is provided so as to open toward the rear in the vicinity of the upper part of the milling cylinder 12.
Moreover, the exhaust pipe 30 is configured to efficiently transfer the heat of the exhaust pipe 30 to the cereal cylinder 12 by covering the portion along the cereal cylinder 12 with a heat shield cover 40 having a U-shaped cross section from the outside. .

  According to the DPF device 2, the cereal cylinder 12 is also used as a mounting member for the exhaust pipe 30, so that the exhaust gas can be discharged to the upper side of the machine body by an inexpensive configuration. Further, since the cereal cylinder 12 is heated by the long exhaust pipe 30 covered with the heat shield cover 40, the amount of water on the cereal surface can be reduced by the stirring action by the rotation of the cereal helix, so Can be smooth. Further, since the heat radiation of the exhaust pipe 30 is promoted, the exhaust gas can be discharged at a low exhaust temperature.

DESCRIPTION OF SYMBOLS 1 Combine 2 DPF apparatus 4 Traveling machine stand 5 Pretreatment part 6 Threshing part 7 Operation part 8 Glen tank 10 Engine cover 11 Engine 20 Tank inclination bottom wall 21 Grain conveyance auger 26 DPF
27 Cover body 30 Exhaust pipe

Claims (3)

  Behind the pre-processing unit (5), the threshing unit (6) is placed on the left side of the traveling machine base (4), and the engine (11) and the Glen tank (8 In the space (29) formed by the threshing part (6) and the lower part of the inclined tank bottom wall (20) of the Glen tank (8) immediately after the engine (11). And a DPF (26) for removing particulate matter contained in the exhaust gas.   The exhaust pipe (30) connected to the DPF (26) is arranged rearward along the outside of the tank inclined bottom wall (20) in which the grain transfer auger (21) of the Glen tank (8) is installed. The combine according to claim 1. A Glen tank installed in such a manner that the DPF (26) is housed and covered in a box-shaped cover body (27), and one side of the cover body (27) is switched between the grain housing work position and the side to be opened. The combine according to claim 1 or 2, wherein the combine is installed in contact with the inclined tank bottom wall (20) at the grain storage work position according to (8).