JP2014131508A - Combine harvester - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a combine harvester cleaning exhaust gas by disposing a DPF (Diesel Particulate Filter) at a position immediately back of an engine between a threshing part and a lower part of a tank inclined bottom wall of a grain tank and removing particulate matters in the exhaust gas by the DPF.SOLUTION: The combine harvester comprises: a threshing part and an operation part at the back of a pretreatment part in a left side and a right side of a traveling machine base respectively; an engine 11 surrounded by an engine cover; a grain lifting cylinder including a grain lifting spiral body that supplies a grain tank with grains threshed and selected by the threshing part; and the grain tank. When a DPF 26 for removing particulate matters contained in exhaust gas is disposed in a space part formed at an immediately back of the engine 11 between the threshing part and a lower part of a tank inclined bottom wall of the grain tank, an exhaust pipe 30 to be connected to the DPF 26 is inserted into a left inclined side wall constituting a cover body 27, and is bent and extended upward such that the exhaust pipe is positioned along the grain lifting cylinder, with it brought closer to or brought into contact with the outer periphery thereof, and an exhaust port of the exhaust pipe 30 is provided to be opened rearward near the upper part of the grain lifting cylinder.

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 has a threshing section (6) on the left side of the traveling machine base (4) behind the preprocessing section (5), and a driving section (7) and an engine cover (10 on the right side). The engine (11) and the combine (1) in which the grain culled and sorted by the threshing part (6) is arranged in the milling cylinder (12) and the grain tank (8) are arranged in the combine (1). 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) at a position immediately after (11), particulate matter contained in the exhaust gas is contained. In disposing the DPF (26) to be removed, the exhaust pipe (30) connected to the DPF (26) is bent or extended upward so as to approach or contact the outer periphery of the milling cylinder (12). The exhaust pipe ( An exhaust port of 0) rearward in the vicinity of an upper portion of the AgeKoku cylinder (12) is characterized by providing so as to open.

According to the invention of claim 1, the threshing part (6) is surrounded by the left side of the traveling machine base (4) behind the pre-processing part (5) and the driving part (7) and the engine cover (10) on the right side. In the combine (1) in which the milling cylinder (12) and the grain tank (8) are arranged, the engine (11) and the grain threshing and selecting grains by the threshing unit (6) are arranged in the engine (11). A DPF that removes particulate matter contained in the exhaust gas in the space (29) formed by the threshing part (6) and the lower part of the tank inclined bottom wall (20) of the Glen tank (8) at the position immediately after it. 26), when the exhaust pipe (30) connected to the DPF (26) is bent and extended upward, the outer periphery of the milling cylinder (12) is brought close to or in contact with the outer circumference. The exhaust port of the exhaust pipe (30) ) In the vicinity of the upper part of the upper part of the exhaust gas so that the high-temperature exhaust gas discharged from the engine is prevented from dissipating heat, and the particulate matter is combusted efficiently and efficiently at a high temperature by the DPF. Can be purified. 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. In addition, the heat of the DPF and the exhaust pipe is transmitted to the Glen tank through the tank inclined bottom wall, and the moisture content on the surface of the grain is promoted to facilitate smooth grain discharge, and the exhaust discharged from the exhaust pipe The gas temperature can be reduced.
Then, the air in the cover body is confined while being heated by the DPF, and the exhaust gas can be purified by maintaining the high temperature state in which the heat release of the DPF is suppressed and increasing the combustion efficiency of the particulate matter.

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) are connected to each other at the upper side to thereby make the cover body (27) airtight. By making the box body having the heat insulation property of the DPF room 28 formed in the cover body (27) can be enhanced.

In addition, since the cereal cylinder (12) is heated by the heat radiation of the long exhaust pipe (30), 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. Moreover, since heat dissipation of the exhaust pipe (30) is promoted, the exhaust gas can be discharged at a low exhaust temperature.

It is a right view of the combine to which this invention was applied. It is a right view which shows the structure in connection with embodiment of a DPF apparatus. It is a perspective view which shows the structure of a DPF apparatus.

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 tank having a square shape in plan view. The Glen tank 8 is formed in a funnel shape by the inclined bottom wall 20 on the back side (left side) of the machine body and the inclined tank bottom wall 20a on the right side. A grain transport auger 21 is mounted along the bottom. 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 side attached to the vertical auger 16 so as to be rotatable in the vertical axis. From the grain accommodation work position shown in FIG. In a state where the belt connection is released, the maintenance work position can be changed to the side where the vertical auger 16 is moved sideways and the right side of the threshing portion 6 is largely released. 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 has the DPF device 2 connected to the connecting pipe (exhaust pipe) 25 extending from the exhaust manifold of the engine 11, and the DPF 26 is accommodated in a box-shaped cover body 27 described later. In the state, it is arranged immediately after the engine room 10a. Further, in a state where the grain tank 8 is in the grain accommodating work position, a cover body 27 is provided in a space 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. It 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. A cover body 27 that accommodates and installs the DPF 26 in the space includes a bottom wall 27a having a shape in plan view, and a front wall 31 and a rear wall 32 that are erected in a substantially triangular shape before and after the bottom wall 27a. And the right inclined side wall 33 and the 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.
The front wall 31 and the rear wall 32 have a right oblique side substantially the same as the inclination of the tank inclined bottom wall 20 of the Glen tank 8 and a left inclined side steeply inclined from a position where it contacts the upper end corner portion of the tank inclined bottom wall 20. It is formed to be vertical.

  As a result, when the cover body 27 is installed on the traveling machine base 4 in the space, the right inclined side wall 33 can be brought into contact with the tank inclined bottom wall 20 and the upper end (the apex of the triangle) of the left inclined side wall 35 can be The tank 8 can be provided so as to be connected in the vertical direction without greatly protruding from the left vertical wall. 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. 3, the cover body 27 forms a flat ceiling wall 37 in which the apex portion of the triangle is one step lower on the engine 11 side, and the connecting pipe 25 is formed in a hole drilled 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.
In addition, by housing the DPF 26 in the airtight cover body 27, the DPF 26 traps 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.

Further, the exhaust pipe 30 of the DPF 26 is inserted into the left inclined side wall 35 of the cover body 27 and is bent and extended upward, so that the exhaust pipe 30 is brought close to or in contact with the outer periphery of the milling cylinder 12 and exhausted. The exhaust port of the pipe 30 is provided so as to open rearward in the vicinity of the upper part of the cereal 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 Preprocessing part 6 Threshing part 7 Driving | running 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 (1)

  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 threshing unit (6) surrounded by the driving unit (7) and the engine cover (10) on the right side. ) In the combine (1) in which the milled cylinder (12) and the grain tank (8) are arranged, the threshing part (6) is positioned immediately after the engine (11). When the DPF (26) for removing particulate matter contained in the exhaust gas is disposed in the space (29) formed below the inclined tank bottom wall (20) of the Glen tank (8), the DPF The exhaust pipe (30) connected to (26) is bent and extended upward, so that the exhaust pipe (30) is placed close to or in contact with the outer periphery of the cereal cylinder (12). After the exhaust vent in the vicinity of the top of the milling cylinder (12) Combine, characterized in that provided so as to open toward the.

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