JP5274971B2 - Vegetable harvesting machine - Google Patents

Description

  The present invention relates to a vegetable harvester equipped with a diesel engine.

2. Description of the Related Art Conventionally, a self-propelled vegetable harvester that harvests root vegetable vegetables such as radishes and carrots in a farm has been known (see, for example, Patent Document 1). In such a vegetable harvesting machine, a driving part is provided at the front part on the left and right sides of the machine body, and a working machine is provided on the other side of the left and right sides. In addition, a sorting unit is provided at the rear of the machine body, and a storage container can be installed. And after digging up root vegetables in the soil with the work machine and transporting them to the rear of the machine, after separating the root vegetables into the stem and leaf part and the root part, only the root part is sent to the sorting part, and after sorting in the sorting part It can be accumulated in the storage container.
JP 2005-280439 A

  In a conventional vegetable harvesting machine, a diesel engine is mounted on the body as a power source for a working machine or the like. Therefore, when an exhaust gas purifying means, for example, a diesel particulate filter that collects and reduces particulate matter contained in the exhaust gas is provided in the exhaust passage of the diesel engine, the diesel that incorporates the diesel particulate filter is incorporated. The problem is where the particulate filter case can be installed compactly around the diesel engine.

  Therefore, the present invention provides a vegetable harvester that can install a case containing the exhaust gas purification means compactly around the diesel engine when the exhaust gas purification means is provided in the exhaust passage of the diesel engine. For the purpose.

  The problem to be solved by the present invention is as described above. Next, means for solving the problem will be described.

In Claim 1, the harvesting working machine (16) provided on the left and right sides of the mounting machine base (2), and the diesel engine (6) provided on the left and right other sides of the mounting machine base (2), A substantially box-shaped bonnet (51) that covers an upper portion of the diesel engine (6) to form an engine room (5), and an operation unit (4) disposed in front of the diesel engine (6). In the vegetable harvester (1), in the engine room (5), a diesel engine is disposed between the first exhaust pipe (41) and the second exhaust pipe (42) constituting the exhaust passage of the diesel engine (6). A diesel particulate filter case (39) containing a particulate filter is arranged, and a NOx catalyst case containing a NOx catalyst between the second exhaust pipe (42) and the tail pipe (44). 43), and the diesel particulate filter case (39) is disposed horizontally between the diesel engine (6) and the operating unit (4) with the longitudinal direction as the left-right direction of travel, The NOx catalyst case (43) has a longitudinal direction between the diesel engine (6) and the harvesting work machine (16), with the longitudinal direction in the traveling direction on the rear downstream side of the diesel particulate filter case (39). A reducing agent tank (53) for storing the reducing agent of the NOx catalyst is placed and fixed on the outer upper surface of a bonnet (51) that constitutes the engine room (5), and is arranged horizontally in the front-rear direction. An exhaust passage from the tank (53) between the diesel particulate filter case (39) and the NOx catalyst case (43) is provided. To a second exhaust pipe for forming (42) is obtained by enabling supplying the reducing agent through the urea supply device.

  As effects of the present invention, the following effects can be obtained.

  In claim 1, when the diesel particulate filter is used as a means for purifying exhaust gas, the diesel particulate filter having the built-in diesel particulate filter by effectively utilizing the space between the diesel engine and the operating section. The case can be installed compactly in front of the diesel engine.

Further , when the NOx catalyst is used as a means for purifying exhaust gas, the space between the diesel engine and the harvesting work machine is effectively used, and the NOx catalyst case containing the NOx catalyst is placed on the side of the diesel engine. It can be installed compactly.

Further , the reducing agent tank for storing the reducing agent of the NOx catalyst can be easily installed in the vicinity of the NOx catalyst case by effectively utilizing the relatively wide space above the diesel engine.

  Therefore, the support structure of the reducing agent tank can be simplified, and the reducing agent tank can be installed compactly above the diesel engine.

  Next, embodiments of the invention will be described.

  FIG. 1 is a side view showing the overall configuration of a vegetable harvester according to an embodiment of the present invention, and FIG. 2 is a plan view of the same. 3 is a front view showing details of the vicinity of the diesel engine, FIG. 4 is a side view, FIG. 5 is an enlarged side view of FIG. 4, and FIG. 6 is a plan view.

  First, the whole structure of the vegetable harvester 1 which harvests root vegetable vegetables, such as a radish and a carrot of a farm field, is demonstrated.

  As shown in FIGS. 1 and 2, in the vegetable harvesting machine 1, the mounting machine base 2 is arranged horizontally, and a pair of left and right crawler type traveling devices 3 are provided in the lower part of the mounting machine base 2. A harvesting work machine 16 is provided on the left side of the mounting machine base 2, and a sorting unit 32 is provided on the rear side of the mounting machine base 2. In addition, a diesel engine 6 and an operation unit 4 are provided on the right side of the mounting machine base 2.

  The harvesting work machine 16 is extended in the front-rear direction from the left front of the mounting machine base 2 to the vicinity of the left rear end, and is disposed in an inclined shape with a front low and a high rear. The harvesting work machine 16 includes a pulling device 21, a digging device 24, a pulling conveyor device 22, a cutting device 26, a shooter 27, and the like.

  The pulling device 21 is provided at the front end of the harvesting work machine 16. The pulling device 21 has tines 28 and 28 that oppose each other in the left-right direction, and is configured so that the stems and leaves of root vegetable vegetables in the soil can be raised by the tines 28 and 28.

  The excavating device 24 is provided in the front part of the harvesting work machine 16. The digging device 24 has a gauge foil 23, a digging blade 31 and the like. The root vegetable in the soil is lifted from the root by the digging blade 31 and floated. The depth of penetration into the soil can be adjusted by the gauge wheel 23.

  The drawing conveyor device 22 is provided between the front portion and the rear portion of the harvesting work machine 16. The drawing conveyor device 22 has conveying belts 25 and 25 facing in the left-right direction, and root vegetables are sandwiched between the foliage portions by the conveying belts 25 and 25 and pulled out from the soil, from the front of the harvesting work machine 16. It is comprised so that it can convey toward a rear part.

  The cutting device 26 is provided in the middle part before and after the harvesting work machine 16. The cutting device 26 has a cutting blade and the like, and is configured to be able to separate the root and leaf portion from the root vegetable by cutting the root vegetable vegetable being conveyed by the drawing conveyor device 22 with the cutting blade.

  The shooter 27 is provided at the rear end of the harvesting work machine 16. The shooter 27 extends from the pulling conveyor device 22 toward the rear of the mounting machine base 2 and is configured so that the stem and leaf portion of the root vegetable separated by the cutting device 26 can be inherited and discharged from the pulling conveyor device 22. The

  The sorting unit 32 extends in the left-right direction from the left side of the mounting machine base 2 to the vicinity of the middle of the left and right sides, and is arranged on the right side of the rear part of the harvesting work machine 16. The sorting unit 32 includes the transport conveyor 10, the work table 33, and the like. The root part of the root vegetables separated by the cutting device 26 is transported from the harvesting work machine 16 side to the right side by the transport conveyor 10, It is configured so that an auxiliary worker who is on the workbench 33 can select the root part being transported.

  A storage container can be installed on the right side of the sorting unit 32. The storage container is supported by the mounting machine base 2 and the like, and is configured so that the root parts of the root vegetables after sorting can be accumulated.

  The diesel engine 6 is disposed on the right side of the middle part before and after the harvesting work machine 16 and in front of the right side of the sorting unit 32. The diesel engine 6 is configured such that power can be supplied to devices of each part using the diesel engine 6 as a drive source via an appropriate power transmission mechanism, and the devices can be driven.

  The operation unit 4 is arranged on the right side of the front part of the harvesting work machine 16 and in front of the diesel engine 6. The driving unit 4 includes a driver's seat 9 and operating tools including a steering handle 8, a shift lever 11, a sub-shift lever 12, and work clutch levers 13 and 13, and an operator is seated on the driver's seat 9, An operator can operate each device with operation tools.

  In this way, the vegetable harvesting machine 1 supplies power to each device from the diesel engine 6 by operating the operation tools in the operation unit 4, and digs up the root vegetable vegetables in the soil with the harvesting work machine 16. Then, after the root vegetables are separated into the stem and leaf part and the root part, only the root part is sent to the sorting part 32 and sorted by the sorting part 32 so that it can be accumulated in the storage container. Composed.

  Next, the configuration around the diesel engine 6 mounted on the airframe will be described.

  As shown in FIGS. 3 to 6, the diesel engine 6 is supported by the right front part of the mounting machine base 2 and covered with a bonnet 51. The bonnet 51 has a substantially box shape, and its front plate 51a is close to the operation unit 4 disposed in front of the diesel engine 6, and the upper plate 51c is bent and gradually rises rearward in a side view. It is comprised so that. An engine room 5 is formed inside the bonnet 51.

  In the engine room 5, a radiator 52 is provided to the right of the diesel engine 6 and the cooling fan 14 is provided between the diesel engine 6 and the radiator 52. The cooling fan 14 is supported by an output shaft 6 a that protrudes rightward from the diesel engine 6, and can be driven to rotate by the diesel engine 6.

  An engine cover 15 is provided on the right side of the radiator 52. An opening is formed in the engine cover 15, and this opening communicates with the opening 51 b formed in the right side plate 51 e of the bonnet 51. A dust removing screen 17 having a plurality of holes in a mesh shape is stretched at the opening of the engine cover 15.

  Thus, when the cooling fan 14 is rotated in the engine room 5, the outside air for cooling the engine is drawn by the suction force through the screen 17 of the engine cover 15 as indicated by the arrow a shown in FIGS. 2 and 6. 51 is taken into the engine room 5 from the opening 51b of the right side plate 51e, sent to the diesel engine 6 as cooling air, and then discharged from the opening 51f of the left side plate 51d toward the harvesting work machine 16 side. It is possible.

  Further, in the engine room 5, a turbocharger 35, an air cleaner 46, and a diesel particulate filter (hereinafter, referred to as exhaust gas purification means) are disposed in the vicinity of the cylinder head 34 fixed on the cylinder block of the diesel engine 6. A DPF case 39 having a built-in DPF), a NOx catalyst case 43 having a NOx catalyst as exhaust gas purification means, and the like are provided.

  The supercharger 35 is provided on the front side of the cylinder head 34. The supercharger 35 includes a compressor case 37 having a blower wheel and a turbine case 36 having a turbine wheel. The compressor case 37 is located on the right side and the turbine case 36 is located on the left side with respect to the cylinder head 34. Are arranged as follows.

  The air cleaner 46 is disposed above the right rear portion of the cylinder head 34, and is supported on the rear portion of the upper plate 51 c of the bonnet 51 via a support member 54. The air cleaner 46 is connected to the upstream side (intake air intake side) of the compressor case 37 on the downstream side (intake exhaust side) via the first intake pipe 45, and is connected to the engine cover 15 via the intake duct 47 on the upstream side. The

  A compressor case 37 connected to the air cleaner 46 is connected via a second intake pipe 50 to an intake manifold 49 provided on the rear side of the cylinder head 34 on the downstream side. Thus, an intake passage of the diesel engine 6 is formed by the intake duct 47, the first intake pipe 45, the second intake pipe 50, and the like on the upstream side of the intake manifold 49.

  With such a configuration, in the intake system of the diesel engine 6, outside air sucked into the air cleaner 46 through the opening of the engine cover 15 is purified by the air cleaner 46, and then passes through the intake manifold 49 from the compressor case 37. Thus, it can be supplied to each cylinder of the diesel engine 6.

  The DPF case 39 is provided on the front side of the cylinder head 34 and is disposed on the left side of the supercharger 35 (turbine case 36). The DPF case 39 extends horizontally with its longitudinal direction as the left-right direction, and is detachably fastened to an exhaust manifold 38 or a cylinder block disposed below the DPF case 39 via bolts or the like. The DPF case 39 is connected to the downstream side (exhaust exhaust side) of the turbine case 36 via the first exhaust pipe 41 on the upstream side (exhaust intake side).

  Thereby, the DPF built in the DPF case 39 is provided in the exhaust passage formed by the first exhaust pipe 41 and the like. The DPF collects and reduces particulate matter contained in the exhaust of the diesel engine 6. Although not shown in detail, the DPF is a substantially cylindrical filter case built in the DPF case 39 made of a heat-resistant metal material. For example, an oxidation catalyst such as platinum and a honeycomb structure filter body are arranged in series and accommodated.

  Here, when the DPF case 39 is not provided, a dead space is formed in a part between the diesel engine 6 and the operation unit 4. Between the diesel engine 6 and the driving unit 4, it is arranged inside the hood 51, that is, in the engine room 5. The DPF case 39 is also configured to serve as a muffler.

  A second exhaust pipe 42 is connected to the downstream side of the DPF case 39, and extends horizontally from the connecting portion to the rear. The second exhaust pipe 42 extends to the rear side of the diesel engine 6 on the left side surface of the cylinder head 34, and then passes to the left side so as to pass through the left side plate 51 d of the bonnet 51 and reach the outside of the engine room 5. It is bent toward and extends between the diesel engine 6 and the harvesting work machine 16.

  A tail pipe 44 is connected to the second exhaust pipe 42 and slightly extends from the connecting portion toward the left side. Thereafter, the tail pipe 44 is bent upward between the diesel engine 6 and the harvesting work machine 16, and extends to above the harvesting work machine 16. The downstream end of the tail pipe 44 is provided with an opening as an exhaust port, and opens toward the left side at a position higher than the upper surface of the harvesting work machine 16.

  In addition, the NOx catalyst case 43 is provided on the left side of the cylinder head 34 and is disposed behind the left side of the DPF case 39 and on the left side of the second intake pipe 50. The NOx catalyst case 43 is horizontally extended with its longitudinal direction as the front-rear direction, and is provided in the front-rear midway part where the second exhaust pipe 42 is horizontal in the vicinity of the left side surface of the cylinder head 34.

  Thereby, the NOx catalyst built in the NOx catalyst case 43 is provided downstream of the DPF in the exhaust passage formed by the second exhaust pipe 42 and the like. The NOx catalyst is for reducing NOx (nitrogen oxides) in the exhaust gas and detoxifying it. In this embodiment, the NOx catalyst is a selective catalytic reduction catalyst using urea water as a reducing agent.

  Here, since the NOx catalyst case 43 is not provided with the NOx catalyst case 43, a dead space is formed in a part between the diesel engine 6 and the harvesting work machine 16. , The diesel engine 6 and the harvesting work machine 16 are disposed inside the bonnet 51, that is, in the engine room 5.

  Further, a urea tank 53 as a reducing agent tank that stores urea water that is a reducing agent of the NOx catalyst is disposed above the diesel engine 6. The urea tank 53 is disposed outside the engine room 5 above the air cleaner 46 and supported by the rear portion of the upper plate 51 c of the bonnet 51. As a result, the urea tank 53 serving as a large capacity tank can be installed in the vicinity of the NOx catalyst case 43.

  The urea tank 53 is connected to a portion of the second exhaust pipe 42 between the DPF case 39 and the NOx catalyst case 43 via a urea supply device, and the urea water in the urea tank 53 is second exhausted by the urea supply device. The NOx catalyst case 43 of the pipe 42 can also be supplied to the inside thereof on the upstream side. That is, the urea water in the urea tank 53 can be supplied between the DPF and the NOx catalyst in the exhaust passage, in other words, downstream of the DPF and upstream of the NOx catalyst.

  The turbine case 36 connected to the DPF case 39 is connected to an exhaust manifold 38 provided on the front side of the cylinder head 34 on the upstream side. Thus, an exhaust passage of the diesel engine 6 is formed on the downstream side of the exhaust manifold 38 by the first exhaust pipe 41, the second exhaust pipe 42, the tail pipe 44, and the like.

  With such a configuration, in the exhaust system of the diesel engine 6, the exhaust gas discharged from each cylinder of the diesel engine 6 to the exhaust manifold 38 is purified by the DPF case 39 via the turbine case 36, and the NOx catalyst. After further purification, the tail pipe 44 can be discharged to the outside.

  Depending on the model of the engine, the NOx catalyst may not be provided in the exhaust passage, and only the DPF case 39 may be provided. In this case, the first exhaust pipe 41 is extended, and the NOx catalyst case in the present embodiment. It is also possible to arrange the DPF case 39 at 43 arrangement locations.

  As described above, the vegetable harvesting machine 1 according to an embodiment of the present invention is provided on the left and right sides of the mounting machine base 2 and the harvesting work machine 16 provided on the left and right side of the mounting machine base 2. A diesel engine 6 and an operation unit 4 provided on the left and right other sides of the mounting machine base 2 and disposed in front of the diesel engine 6 are provided in the exhaust passage of the diesel engine 6 as exhaust gas purification means. The DPF case 39 containing the DPF is disposed between the diesel engine 6 and the operating unit 4.

  As a result, when the DPF is used as a means for purifying exhaust gas, the space between the diesel engine 6 and the operation unit 4 is effectively used, and the DPF case 39 containing the DPF is compactly placed in front of the diesel engine 6. Can be installed. Furthermore, the DPF case 39 can be supported by highly rigid parts such as the cylinder block of the diesel engine 6 and the exhaust manifold 38, and the support rigidity of the DPF case 39 can be increased.

  Further, the vegetable harvesting machine 1 arranges the DPF case 39 on the left side of the supercharger 35. In other words, the DPF case 39 and the supercharger 35 are juxtaposed in the left-right direction with respect to the diesel engine 6, and The feeder 35 is arranged on the side of the cooling fan 14 attached to the left and right side (right side) of the diesel engine 6.

  As a result, the supercharger 35 is disposed between the DPF case 39 and the cooling fan 14. Therefore, the cooling air from the cooling fan 14 is less likely to directly hit the DPF case 39, and the DPF case 39 is less susceptible to the cooling air from the cooling fan 14.

  Therefore, the heating means for the combustion treatment of the unburned matter collected by the DPF built in the DPF case 39 is unnecessary, the support structure of the DPF case 39 is simplified, and the DPF case 39 is replaced with the diesel engine 6. It can be installed compactly in front of. In addition, the temperature management of the DPF case 39 can be simplified.

  Further, the vegetable harvester 1 is provided with a NOx catalyst as a purification means for exhaust gas downstream of the DPF in the exhaust passage, and from the DPF case 39 between the diesel engine 6 and the harvesting work machine 16. Also, a NOx catalyst case 43 containing the NOx catalyst is disposed behind.

  Thus, when the NOx catalyst is used as the exhaust gas purification means, the space between the diesel engine 6 and the harvesting work machine 16 is effectively used, and the NOx catalyst case 43 containing the NOx catalyst is used as the diesel engine. 6 can be installed compactly on the left and right sides (left side).

  Further, the vegetable harvester 1 arranges the NOx catalyst case 43 on the left side of the second intake pipe 50, in other words, the NOx catalyst case 43 and the first intake pipe 45 that forms the intake passage of the diesel engine 6 together with the first intake pipe 45. The two intake pipes 50 are juxtaposed in the left-right direction with respect to the diesel engine 6, and the first intake pipe 45 is arranged on the cooling fan 14 attached to the left and right sides of the diesel engine 6.

  As a result, the second intake pipe 50 is disposed between the NOx catalyst case 43 and the cooling fan 14. Therefore, the cooling air from the cooling fan 14 is less likely to directly hit the DPF case 39, and the NOx catalyst case 43 is less susceptible to the cooling air from the cooling fan 14. Therefore, the temperature management of the NOx catalyst case 43 can be simplified.

  In this embodiment, since the NOx catalyst case 43 is provided in the horizontal portion of the second exhaust pipe 42 that forms a part of the exhaust passage, the support structure of the NOx catalyst case 43 is simplified, and the DPF case 39 can also be installed compactly in front of the diesel engine 6.

  The vegetable harvester 1 also has a urea tank (reducing agent tank) 53 for storing urea water as a reducing agent for the NOx catalyst above the diesel engine 6 and outside the engine room 5 that houses the diesel engine 6. And the urea water can be supplied from the urea tank 53 between the DPF and the NOx catalyst in the exhaust passage.

  Thereby, the urea tank 53 can be easily installed in the vicinity of the NOx catalyst case 43 by effectively utilizing the relatively wide space above the diesel engine 6. Therefore, the support structure of the urea tank 53 can be simplified, and the urea tank 53 can be installed compactly above the diesel engine 6. In addition, urea can be easily replenished to the urea tank 53, and its maintainability can be improved.

  In the present embodiment, since the air cleaner 46 is disposed above the diesel engine 6 and inside the engine room 5 so as to be positioned in the vicinity of the urea tank 53, the air cleaner 46 can be easily cleaned, The maintenance can be improved.

The side view which showed the whole structure of the vegetable harvester which concerns on one Example of this invention. FIG. The front view which showed the detail of the diesel engine vicinity. Similarly side view. The enlarged side view of FIG. 4 similarly. FIG.

DESCRIPTION OF SYMBOLS 1 Vegetable harvester 2 Mounted machine stand 4 Operation part 5 Engine room 6 Diesel engine 16 Harvester work machine 39 DPF case 43 NOx catalyst case 53 Urea tank (reducing agent tank)

Claims (1)

The harvesting work machine (16) provided on the left and right sides of the mounting machine base (2), the diesel engine (6) provided on the left and right other sides of the mounting machine base (2), and the diesel engine (6 ) A vegetable harvester (1) comprising a substantially box-shaped bonnet (51) that covers the top of the engine room (5) and an operating part (4) disposed in front of the diesel engine (6). In the engine room (5), a diesel particulate filter is built in between the first exhaust pipe (41) and the second exhaust pipe (42) constituting the exhaust passage of the diesel engine (6). A diesel particulate filter case (39) is disposed, and a NOx catalyst case (43) containing a NOx catalyst is disposed between the second exhaust pipe (42) and the tail pipe (44). The diesel particulate filter case (39) is disposed horizontally between the diesel engine (6) and the operating unit (4) with the longitudinal direction as the left-right direction of travel, and the NOx catalyst case (43) Between the diesel engine (6) and the harvesting working machine (16), a longitudinal direction is horizontally arranged behind the diesel particulate filter case (39) with the longitudinal direction as the front-rear direction of the traveling direction. The reducing agent tank (53) for storing the reducing agent of the NOx catalyst is placed and fixed on the outer upper surface of the bonnet (51) constituting the engine room (5), and the reducing agent tank (53) A second exhaust pipe constituting an exhaust passage between the diesel particulate filter case (39) and the NOx catalyst case (43) ( To 2), toppers, characterized in that to enable supplying the reducing agent through the urea supply device.

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