JP6270485B2 - Combine - Google Patents

Description

  The present invention relates to a combine equipped with a diesel engine, and more particularly to a combine that purifies exhaust gas discharged from the diesel engine with a diesel particulate filter.

  In general, exhaust gas discharged from a diesel engine contains particulate matter mainly composed of black smoke, and a diesel particulate filter (hereinafter referred to as DPF) that removes the particulate matter from the exhaust gas is known. ing. Conventionally, there has been proposed a combine in which an engine and a radiator are disposed on the right side of the combine, a DPF is disposed at a lower rear position of the radiator, and a front and rear and an upper side of the engine, the radiator and the DPF are covered with a driving box (patent) Reference 1).

JP 2011-230522 A

  The thing of the said patent document 1 forms the bulging part in the rear lower part of a drive box in order to cover DPF, and covers an engine, a radiator, and DPF by one drive box. In order to create the prime mover box, it is necessary to recreate a mold such as a mold, and the mold itself becomes large, which requires a large cost. In addition, the driving box is open on the left and right and below, and the swarf of the threshing device placed on the left side of the machine enters from the left side of the opened driving box, accumulates in the DPF, and there is a problem with the DPF. May occur.

  Therefore, an object of the present invention is to provide a combine that solves the above-described problems by reducing costs while preventing soot and the like from accumulating in the particulate matter removing device (DPF).

The present invention includes an engine room (11) in which an engine (E) is stored, and a particulate matter removing device (27) that removes particulate matter contained in exhaust gas discharged from the engine (E). In the prepared combine (1),
A rear engine cover (36) covering the rear side of the engine room (11);
A DPF cover (43) that covers a portion (27b) of the particulate matter removing device (27) that protrudes in the left-right direction from the rear engine cover (36);
A cooling fan (25) for sucking cooling air in the left-right direction of the airframe in the engine room (11) ,
The particulate matter removing device (27) is disposed in front of the rear engine cover (36),
The rear side surface (43b) of the DPF cover is formed to be continuous with the rear engine cover (36) ,
The cooling air passes through the DPF cover (43) and above the DPF cover (43),
The DPF cover (43) covers the front side, the rear side, and the left and right sides of the particulate matter removing device (27) with predetermined gaps (d, e, f), and the particulate matter removing device. Covering the upper side of (27) with a gap (g) larger than the predetermined gap (d, e, f);
Various sensors (45) are arranged in the vicinity of the upper surface (43c) of the DPF cover (43),
The cooling air that has entered the DPF cover (43) from the other left and right sides of the DPF cover (43) is guided toward the lower side of the particulate matter removing device (27).
It is characterized by that.

For example, as shown in FIG. 6, a tang fan (52) for raising a sorting wind for wind-sorting the selected item is provided.
Forming a hole (47) in the rear side surface (43b) of the DPF cover (43);
A part of the cooling air is sucked into the tang fan (52) through the hole (47).

  In addition, although the code | symbol in the said parenthesis is for contrast with drawing, it does not limit the structure of this invention at all.

According to the first aspect of the present invention, the part of the particulate matter removing device that protrudes in the left-right direction from the rear engine cover is covered with the DPF cover, and the part other than the part covered with the DPF cover is removed from the rear engine cover. Since it is shared as the cover of the apparatus, it is possible to reduce the cost while preventing soot and the like from accumulating in the particulate matter removing apparatus. Moreover, since the cooling air passes above the DPF cover, the heat balance in the engine room can be kept good. In addition, various sensors are arranged on the DPF cover that is arranged with a gap from the particulate matter removing device, and the cooling air that has entered the DPF cover escapes below the particulate matter removing device. It is possible to prevent problems caused by the hot air of the particulate matter removing device.

In the present invention according to claim 2 , since a part of the cooling air in the DPF cover is sucked by the tang fan, the cooling air that becomes hot air hits the wetting material or the like in the threshing portion, and the threshing performance can be improved. .

The whole side view which shows the combine which concerns on embodiment of this invention. The top view which shows a body frame and an engine room. The side view which shows an engine room and a Chinese fan. The left perspective view which shows an engine room and DPF. The left perspective view which covered the engine room and DPF with the cover, respectively. The right perspective view which covered the left end part of DPF with the DPF cover. The bottom view which shows the space | gap of DPF and a DPF cover. The right view which shows DPF, a DPF cover, and a connection pipe. The right view which shows the state which removed the connection pipe from DPF.

  Hereinafter, embodiments of the present invention will be described with reference to the drawings. As shown in FIG. 1, the combine 1 has a machine body 3 supported by a traveling apparatus 2 that is a pair of left and right crawler-type traveling apparatuses. A pre-processing unit 5 is provided to be movable up and down. A cabin 6 on which a worker performs driving operations is provided on one side forward of the machine body 3 (right side of the machine body), and is cut and transported by the pre-processing unit 5 on the other side (left side of the machine body). A threshing unit 7 (see FIG. 2) is provided for threshing and sorting the cereal grains. A grain tank 9 for storing the grains threshed and sorted by the threshing unit 7 is disposed behind the cabin 6, and stored in the grain tank 9 behind the grain tank 9. A discharge auger 10 is provided for discharging the grain out of the machine.

  An engine room 11 in which an engine E (see FIG. 2) made of a diesel engine is stored is disposed below the driver seat (not shown) in the cabin 6, and above the engine room 11. An air cleaner room 12 in which an air cleaner (not shown) is accommodated is provided. The engine room 11 and the air cleaner room 12 are separated by a partition wall 13 so that cooling air described later does not travel between the engine room 11 and the air cleaner room 12. .

  In the engine room 11, an intake port 16 is opened on the right side surface of the airframe 3 where the door 15 of the cabin 6 is provided. The intake port 16 has an engine having a dustproof net formed in a net shape. A room door 17 is attached to be freely opened and closed. Similarly, in the air cleaner room 12, an air inlet 19 is opened on the right side surface, and an air cleaner room door 20 having a dustproof net formed in a net shape is attached to the air inlet 19 so as to be freely opened and closed. The engine room door 17 and the air cleaner room door 20 are configured so that foreign matter such as sawdust is prevented from entering the engine room 11 and the air cleaner room 12 and cooling air can be sucked into the interior thereof.

  On the other hand, as shown in FIGS. 2 and 3, the threshing unit 7 is configured by being divided into an upper handling chamber (not shown) and a lower sorting chamber 50. Then, the sorted matter threshed by a handling cylinder (not shown) that is supported by rotation leaks into the sorting chamber 50. In the sorting chamber 50, the sorted product is subjected to swing sorting and wind-sorted by a tang fan 52 that generates a sorting wind. The power transmission to the threshing unit 7 is first transmitted from the engine E to the rotary shaft 53 of the tang fan 52. A drive pulley 55 fixed to the right end of the rotary shaft 53 and a driven pulley 57 fixed to the intermediate shaft 56 are wound around a transmission belt 60 that is in tension by a tension pulley 59. The rotation is transmitted from the rotation shaft 53 to the intermediate shaft 56. The rotation of the intermediate shaft 56 is transmitted to the shaft 51 of the handling cylinder through a transmission mechanism 61 including a shaft, a pulley, a belt, and a bevel gear.

  The engine E is mounted on the body frame 21 via a vibration isolating rubber 22 and an engine mount 23, and a radiator 24 that cools the engine E is provided on the opposite side of the threshing portion 7 of the engine E. A cooling fan 25 that sucks cooling air into the engine room 11 and cools the radiator 24, and the like are disposed. The cooling fan 25 can be stopped without stopping driving to an alternator or a water pump (not shown) by a fan driving stop mechanism 26 comprising a belt and a tension pulley, and the dust attached to the engine room door 17 can be removed. It can be done.

  A particulate matter removing device 27 (hereinafter referred to as DPF) is disposed behind the engine E and on the body frame 21, and the DPF 27 is connected to the engine E by a connection pipe 29, and from the engine E. The particulate matter contained in the exhaust gas discharged is collected and further burned to remove the particulate matter. As shown in FIG. 2, the DPF 27 is disposed so as to overlap the engine room 11 in which the engine E is stored and the threshing unit 7 in a plan view. The said threshing part 7 is comprised from all the parts for performing threshing, and naturally the rotating shaft 53, the drive pulley 55, the transmission belt 60, the driven pulley 57, and the intermediate shaft 56 of the said Kara fan 52 are also included. More specifically, the DPF 27 is disposed below the transmission belt 60 so as to partially overlap the transmission belt 60 in plan view. The rear end of the engine room 11 is partitioned by a rear engine cover 36 described later. Since the DPF 27 is arranged in this way, the DPF 27 can be arranged in a compact manner by utilizing the empty space in the engine room 11 and the threshing portion 7, particularly the empty space below the transmission belt 60. In addition, since the DPF 27 is disposed at a predetermined distance from the engine room door 17, it is possible to prevent the operator from touching the DPF that becomes high temperature accidentally and improve safety.

  As shown in FIGS. 4 to 6, support columns 31, 32, 33 are provided upright from the body frame 21 so as to surround the engine room 11, and these support columns 31, 32, 33 are provided in the air cleaner room. 12, an air cleaner room cover 35 that covers surfaces other than the surfaces on the air cleaner room door 20 side and the partition wall 13 side is supported. Further, the support column 33 supports a rear engine cover 36 that covers the rear side of the engine room 11. The DPF 27 is placed horizontally so that the longitudinal direction thereof is the left-right direction of the machine body, and is disposed in front of the rear engine cover 36 and behind the engine E and the support column 32. The support column 32 is disposed between the engine E and the DPF 27 and is disposed close to the DPF 27.

  The connection portion 34 to which the connection pipe 29 and the DPF 27 are connected is disposed on the opposite side of the DPF 27 from the threshing portion 7, that is, on the right side end portion 27 a in the left-right direction of the machine body and on the rear side of the cooling fan 25. Thus, by arranging the connection part 34 remotely from the threshing part 7, it prevents that the sawdust which generate | occur | produces in the threshing part 7 accumulates in the connection part 34, and prevents the malfunction of DPF27 by a sawdust. be able to. Further, since the connecting portion 34 is disposed behind the cooling fan 25, the cooling air generated by the cooling fan 25 blows to the vicinity of the connecting portion 34 to reliably prevent soot accumulation. Can do.

  The connection pipe 29 is divided into a front pipe 29a and a rear pipe 29b behind the engine E. The front side pipe 29a and the rear side pipe 29b are configured to be able to contact and separate by a flange portion 29c including a flange and a bolt. As shown in FIG. 4, the front pipe 29 a includes a rear extension 37 extending from the upper left part of the engine E to the rear of the fuselage, and a side opposite to the engine E with respect to the column 32 in the vicinity of the column 32. A bent portion 39 bent through the bent portion 39, and a downward extending portion 40 inclined downward from the bent portion 39 and extending to the flange portion 29c. The front pipe 29a having the rear extension part 37, the bent part 39, and the lower extension part 40, and the rear pipe 29b constituting the connection pipe 29 are stored in the engine room 11, The exhaust gas in the connection pipe 29 is kept at a high temperature. Thereby, deterioration of the performance of DPF27 can be prevented.

  A left end 27b (protruding portion) of the DPF 27 in the left-right direction of the body projects from the rear engine cover 36 to the left in the left-right direction of the body, and a tail pipe 41 extends from the rear end surface. The tail pipe 41 extends below the fuselage frame 21 and is connected to a diffuser 42 that reduces exhaust noise. The left end 27b of the DPF 27 includes a front cover 43a (see FIGS. 8 and 9), a rear cover 43b (rear side), and an upper cover 43c on the front side, rear side, upper side, and left side (left and right sides), respectively. The front cover 43a, the rear cover 43b, the upper cover 43c, and the left cover 43d constitute a DPF cover 43. That is, the DPF cover 43 is configured such that the right side and the lower side of the body are opened.

  As shown in FIG. 7, the front cover 43a, the rear cover 43b, and the left cover 43d are disposed with narrow spaces d, e, and f (predetermined spaces) with respect to the DPF 27, respectively, As shown in FIGS. 8 and 9, the upper cover 43 c is provided with a gap g larger than the gaps d, e, and f with respect to the DPF 27. In the vicinity of the upper cover 43c, a sensor group 45 including a differential pressure sensor that detects the amount of particulate matter collected in the DPF 27, a temperature sensor that detects the temperature in the DPF 27, and the like is disposed. . Since the DPF 27 and the support column 32 are arranged close to each other, for example, by clamping the wiring to the support column 32, the support column 32 can be used for routing the sensor group 45, and convenience is improved. Can do.

  The rear cover 43b is formed continuously with the rear engine cover 36 so as to be flush with the rear engine cover 36. The tail pipe cover 46 covers the connection portion of the tail pipe 41 with the DPF 27, and the tail pipe cover 46. And a rectangular hole 47 provided above is formed. The rear side of the DPF 27 is covered with a rear cover 43b at the left end 27b and covered with the rear engine cover 36 at portions other than the left end 27b. Since the cover 36 is shared as the cover of the DPF 27, the cost can be reduced. Further, since the DPF cover 43 is also covered with the left cover 43d on the left side surface on the threshing portion 7 side, and is formed flush with the rear engine cover 36, soot generated in the threshing portion 7 is accumulated on the DPF 27. Can be prevented. The tail pipe cover 46 is formed such that the upper surface thereof is inclined rearward so that sawdust and the like do not enter the DPF cover 43.

  Since the present embodiment is configured as described above, when the operator starts the engine E, the cooling fan 25 starts to be driven. The cooling air generated by the cooling fan 25 is blown from the right side of the airframe to the left side of the airframe while cooling the radiator 24 and the engine E. At this time, since the rear portion of the engine room 11 is covered with the rear engine cover 36, the cooling air is not dispersed behind the engine room 11. Then, the cooling air is guided along the rear side and the rear engine cover 36 of the engine E, and passes through the upper cooling air A and the DPF cover 43 above the DPF cover 43 by the upper cover 43c of the DPF cover 43. Is divided into lower cooling air B passing through (see FIG. 6).

  The upper cooling air A can discharge the hot air in the engine room 11 to the left side of the machine body and maintain a good heat balance in the engine room 11. The lower cooling air B enters the DPF cover 43 from the right side of the airframe (the other side of the left and right sides of the airframe). Is done. Due to the exhaust cooling air C, the ambient temperature in the DPF cover 43 does not become too high, and the sensor group 45 is disposed in the vicinity of the upper cover 43c disposed high with a gap g from the DPF 27. In combination with this, the sensor group 45 can be prevented from malfunctioning with hot air from the DPF 27.

  A part of the discharged cooling air C passes through the hole 47 provided in the rear cover 43 b and proceeds to the outside of the DPF cover 43 as the hot air cooling air D. The hot air cooling air D is sucked by the hot air fan 52. To the sorting room of the threshing unit 7. Here, the tang cooling air D absorbs heat from the radiator 24, the engine E, the DPF 27, the connection pipe 29, etc., and becomes hot air or warm air. And the Kara cooling air D guided to the sorting room can dry the sorting in the sorting room and improve the sorting performance of the threshing unit 7. In particular, when the sorted material is a wetting material, the moisture of the wetting material can be removed and the sorting can be performed with high accuracy.

  In the present embodiment, the rear engine cover 36 and the DPF cover 43 are configured as separate bodies. However, these may be integrated to form a single cover.

  In FIG. 6, the cooling air is named as the upper cooling air A, the lower cooling air B, the discharge cooling air C, or the tang cooling air D for convenience, but the cooling air generated by the cooling fan 25 is The direction of the cooling air which exists in addition to these cooling airs and is indicated by the above-described upper cooling air A, lower cooling air B, exhaust cooling air C or tang cooling air D is merely an example.

  In addition, the combine 1 is provided with a vehicle body horizontal control device that raises and lowers the crawler height according to the unevenness of the field, and when the DPF 27 is regenerated, the control is performed to maximize the crawler height. The DPF that becomes high temperature may be remoted.

1 Combine 11 Engine room 25 Cooling fan 27 DPF (Particulate matter removal device)
27b Left end (protruded part)
36 Rear engine cover 43 DPF cover 43b Rear cover (rear side)
43c Upper cover (upper side)
45 Sensor group (various sensors)
47 hole 52 Chinese fan d, e, f Predetermined gap g Clearance E Engine

Claims (2)

In a combine provided with an engine room in which an engine is stored and a particulate matter removing device that removes particulate matter contained in exhaust gas discharged from the engine,
A rear engine cover covering the rear side of the engine room;
A DPF cover that covers a portion of the particulate matter removing device that protrudes in the left-right direction of the aircraft from the rear engine cover;
A cooling fan that sucks cooling air in the left-right direction of the fuselage in the engine room ,
The particulate matter removing device is disposed in front of the rear engine cover,
The rear side surface of the DPF cover is formed to be continuous with the rear engine cover ,
The cooling air passes through the DPF cover and above the DPF cover,
The DPF cover covers the front side, the rear side, and the left and right sides of the particulate matter removing apparatus with a predetermined gap, and has a gap larger than the predetermined gap on the upper side of the particulate matter removing apparatus. Cover
Various sensors are arranged near the upper surface of the DPF cover,
The cooling air that has entered the DPF cover from the other left and right sides of the DPF cover is guided downward of the particulate matter removing device.
Combine that is characterized by that. Equipped with a Kara fan that raises the sorting wind to sort the selected items.
Forming a hole in the rear side of the DPF cover;
Part of the cooling air is sucked into the tang fan through the hole,
The combine according to claim 1 .

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