JP2018153111A - Combine harvester - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a combine harvester which enables sufficiently securing an arrangement space of an air cleaner, and an exhaust gas purification device above a diesel engine and a radiator, widening a housing space of a prime mover part F by simplifying a cover for partitioning an interval between an operation part A provided forward, and making the circumstance of the operation part A comfortable.SOLUTION: A housing space of a prime mover part F is widened by covering a diesel engine 23, a radiator 30, an air cleaner 36, and a machine body front side of exhaust emission control devices 27,28 with a lower cover 61 standing roughly vertically from the rear end of a floor 60 of an operation part A, and a rear cover 62 tilted rearward upwardly from the top edge of the lower cover.SELECTED DRAWING: Figure 4

Description

  The present invention relates to a self-removal type or general-purpose type combine, and more particularly, to a combine in which a control part is provided in front of a driving part constituted by a diesel engine, a radiator or the like.

  The combine which is an agricultural work vehicle has a diesel engine mounted on the body frame so that the crankshaft faces in the left-right direction, and serves as a power source for driving each part of the body such as a traveling device, a cutting unit, and a threshing unit. This engine also has a radiator in front of the cooling fan, and the radiator cools the engine coolant. Further, an air cleaner is provided above the engine, and the air cleaner supplies clean air to the engine.

  Diesel engines, on the other hand, reduce the generation of particulate matter such as nitrogen oxides generated by complete combustion and soot generated by incomplete combustion as exhaust gas regulations are tightened (common rail fuel injection system: Common Rail injection system), turbocharger (Turbo Charger), and exhaust gas recirculation (EGR) are adopted.

  Diesel engines are also equipped with diesel oxide catalyst (DOC) and diesel particulate filter (DPF), nitrogen selective catalyst reduction (SCR), etc. This is removed using an exhaust gas purification device.

  Therefore, it is necessary for the combiner to provide an exhaust gas purification device in addition to the prime mover composed of a conventional engine, radiator, etc., and on the fuselage frame under the constraint of ensuring the performance of this purification device. In addition, it is a design problem to find these arrangement spaces, and to avoid the increase in size of the aircraft as much as possible, and to pack the aircraft compactly.

  Therefore, a diesel engine and a radiator are provided in the left and right direction on the fuselage frame, an air cleaner and a first exhaust gas purification device are provided above the engine and the radiator, and a second exhaust gas purification device is disposed below the front part of the grain tank. It is known that it is provided in the recessed portion on one side (see Patent Document 1). Similarly, it is known that the first and second exhaust gas purifying devices are provided in a recess facing the engine room of the grain tank (see Patent Document 2).

JP 2006-168975 A JP 2006-1558591 A

  As described above, the combine is provided with an exhaust gas purifying device in addition to a driving part constituted by an engine, a radiator, and the like, and complies with exhaust gas regulations. However, as described in Patent Document 1 and Patent Document 2, it is not preferable to provide a recessed portion for disposing the exhaust gas purifying device in the grain tank because the amount of stored grain in the grain tank is reduced.

  Further, as described in Patent Document 1, when the first exhaust gas purifying device is disposed at the inner side in the body width direction in the upper part of the engine and provided below the side panel of the control unit, Due to the first exhaust gas purifying device, the atmospheric temperature of the control section becomes high, which is not preferable for the operator. Further, if a cover for covering the first exhaust gas purification device is provided below or on the side of the side panel, there is a risk that the cost of those members will increase.

  On the other hand, in front of the prime mover provided with such an exhaust gas purifying device, a control unit provided with a driver's seat, an operation panel and the like is provided. The control unit is provided with a cover for partitioning from the driving unit from the rear end of the floor to the rear of the driver's seat, and this cover blocks noise, hot air, or dust from entering the control unit from the driving unit. Prevents workers from contacting the engine.

  Specifically, as described in Patent Document 1, this cover is connected to the front plate portion positioned on the front side of the engine, the top plate portion positioned on the upper side of the engine, and the rear of the top plate portion. It is comprised by the cover etc. which cover the 1st exhaust-gas purification apparatus below the side panel, or the air supply chamber structure part formed behind a driver's seat. For this reason, these partition covers include a large number of plates and a frame member for mounting and supporting the plates, and are incorporated in the control unit, so that the manufacturing cost of the control unit may be deteriorated.

  Further, these partition covers are formed stepwise along the outer shape of the engine, air cleaner, etc., or in Patent Document 1, an independent air cleaner supply chamber is provided above the engine. There is a possibility that the housing space (engine room) of the engine becomes narrow as a whole and the heat balance of the engine is deteriorated.

  In addition, as described in Patent Document 1 and Patent Document 2, when the control unit is configured with a cabin and the cabin is rotated outward or forward, the engine or the like is exposed to perform maintenance. Excellent in that it can be done. However, in order to rotate the cabin, it is necessary to increase the rigidity of the frame, add a locking device to the fuselage frame, or release the connection with peripheral devices. It takes a lot of time to rotate the cabin, and it is actually difficult to handle.

  Moreover, in the conventional combine, the engine maintenance can be performed by removing a cover at one place from among the partition covers provided between the driving unit and the control unit. However, with this device, the removed opening is narrow, or it is difficult to perform maintenance because it is blocked by a cover mounting frame or the like. Therefore, it is desirable to remove the partition cover widely without rotating the control unit or the cabin so that maintenance of the engine or the like can be easily performed.

  In view of the above-described problems, the present invention can secure a sufficient space for arranging the air cleaner and the exhaust gas purification device above the engine and the radiator, and partitions the control unit provided in front. It is an object of the present invention to provide a combine that can make the cover simple and thereby can widen the accommodating space of the prime mover and can make the environment of the control part comfortable.

  In order to solve the above-mentioned problems, the present invention firstly includes a diesel engine and a radiator provided in the left-right direction on the body frame, an air cleaner and an exhaust gas purification device provided above the engine and the radiator, and in front of them. In a combine provided with a control unit including a driver's seat, an operation panel, etc., a lower cover that rises substantially vertically from the rear end of the floor of the control unit and a front side of the engine, radiator, air cleaner, and exhaust purification device, It is characterized by being covered by a rear cover that slopes upward from the upper end.

  According to the present invention, secondly, the air cleaner and the exhaust gas purifying device have a longitudinal direction in the left-right direction which is the same direction as the crankshaft of the engine, and one air cleaner is located almost directly above the engine and the radiator. The other exhaust gas purification device is provided near the rear of the air cleaner.

  Thirdly, the present invention is characterized in that a recess facing the upper side of the engine is formed in the rear cover of the control unit, and the lower part of the back of the driver's seat is accommodated in the recess.

  Fourthly, the present invention is characterized in that one side of the attachment frame of the lower cover and the rear cover is provided by using an intermediate support column serving as a door receiving frame.

  Fifth, the present invention is characterized in that the rear cover of the control unit is detachable.

  According to the combine of the present invention, an air cleaner and an exhaust gas purification device are provided above the engine and the radiator, and a lower cover that rises substantially vertically from the rear end of the floor of the control unit, and a rear cover from the upper end of the lower cover. Since it covers with the rear cover that inclines upward, the cover that separates the driving part and the control part can be made simple by the lower cover and the rear cover, reducing the cover material cost, processing assembly cost, etc. be able to.

  In addition, when the cover for partitioning between the driving part and the control part is formed in a stepped manner as in the prior art, the space for accommodating the driving part is narrowed instead of generating an unnecessary space in the control part. However, if the rear cover is tilted rearward, an unnecessary space for the control unit can be allocated to the driving unit to widen the housing space of the driving unit, and thereby the heat balance of the engine can be made appropriate.

  In addition, the lower cover that rises substantially vertically and the rear cover that is tilted rearward can be formed of a flat plate that does not require bending. Since it can be attached without gaps, it is possible to ensure sound insulation and dust proofing from the prime mover. Moreover, since the shavings and the like that fall on the rear cover slide down toward the floor by the slope that rises thereafter, the control section can be kept clean.

  In addition, the air cleaner and the exhaust gas purification device have the longitudinal direction thereof set in the left-right direction that is the same as the crankshaft of the engine, and one air cleaner is located directly above the engine and the radiator, and the other exhaust gas purification device. If it is provided near the rear of the air cleaner, the exhaust gas purification device can be arranged without invading the arrangement space such as the grain tank, and the exhaust gas of the engine can be introduced into the exhaust gas purification device with little temperature drop, The purification action can be sufficiently exerted.

  If the air cleaner is provided almost directly above the engine and the radiator, the connection pipe between the air cleaner and the engine can be made shorter than that provided closer to the rear of the engine, and the intake resistance between them can be reduced. Also, in this case, if the air flow sensor provided for DPF regeneration is provided integrally with the air cleaner, there is no restriction on the length of the connecting pipe as in the case where the air flow sensor is provided in the middle of the connecting pipe, and the engine and the radiator are substantially true. An air cleaner can be provided on the top with a short connecting pipe.

  If the air cleaner is thus provided almost directly above the engine and the radiator and the exhaust gas purification device is provided near the rear of the air cleaner, the exhaust gas purification device that is at a high temperature can be operated even if both are provided on the same engine. It can arrange | position as far as possible from a part, and can reduce the thermal influence to the control part of an exhaust-gas purification apparatus, and can make it a comfortable control part.

  Furthermore, if a concave portion facing the engine is formed in the rear cover of the control unit, and the lower portion of the backrest of the driver's seat is accommodated in this concave portion, the accommodating space of the driving portion is slightly narrowed by this concave portion, but the driver's seat Can be placed in a position that is almost conventional, so that the driver's seat can be moved forward to increase the size of the control section, and the operation section can be compactly integrated without affecting the driving operation. it can.

  Moreover, if one side of the mounting frame for the lower cover and the rear cover is provided by using an intermediate column that serves as a door receiving frame, there is no need to separately provide a frame for providing the cover mounting frame, and one side of the lower cover is connected to the intermediate column. It is possible to attach one side of the rear cover to the vertical part near the lower part of the vehicle through the attachment frame to the middle inclined part, thereby reducing the material cost, processing assembly cost, etc. of the control part. .

  In addition, when the rear cover of the control unit is detachable, the engine and the exhaust gas purification device can be accessed from the wide opening from which the rear cover is removed, and these maintenances can be easily performed from the opening. In addition, since the rear cover can be attached and detached in much less time than when the control unit (cabin) is rotated for maintenance, inspection and the like can be performed quickly.

It is a right view of a combine. It is a left view of a combine. It is a top view of a combine. It is a right view of a drive part. It is a left view of a drive part. It is a rear view of a drive part. It is a perspective view which shows the frame | skeleton of a cabin. It is a perspective view which shows the frame | skeleton of the back side of a cabin without the support | pillar etc. of the front part side. It is a perspective view which removes a driver's seat and shows the skeleton of the back side of a cabin. It is a perspective view which removes a rear cover and shows the skeleton of the back side of a cabin. It is the perspective view seen from the front side of a rear cover. It is the perspective view seen from the back side of a rear cover. It is a side view of a driver's seat. It is a front view of a driver's seat.

  Embodiments of the present invention will be described with reference to the drawings. As shown in FIGS. 1 to 3, the combine 1 that threshs rice and wheat while reaping rice is provided with a traveling device 3 at a lower portion of a rectangular body frame 2, and the traveling device 3 is attached to the left and right traveling frames 4 on the crawler 5. The crawler type traveling device is driven by the transmission 6. Further, a steering part A constituted by the cabin 7 is provided at the right front part of the body frame 2 when viewed from the forward direction of the body. Further, a cutting part B is provided by a hydraulic cylinder 8 so as to be movable up and down from the left front part of the body frame 2 to the front of the control part A.

  Moreover, while providing the threshing part C in the left side of the body frame 2 behind the cutting part B, and the right side of the threshing part C, the grain collection part D comprised from the glen tank 9, and the grain stored in this grain collection part D A discharge auger 10 is provided to discharge the air to the outside of the machine. Then, behind the threshing section C and the harvesting section D, a waste disposal apparatus E configured by the cutter 11 is provided. Furthermore, between the control part A and the harvesting part D, the driving | operation comprised from the diesel engine etc. which drive the traveling apparatus 3, the cutting part B, the threshing part C, the harvesting part D, the waste disposal apparatus E, etc. Part F is provided.

  Then, the cutting part B divides the napped grains in the field into the harvested grains and uncut grains by the weeding board 12 and the narrow guide 13 provided at the lower part of the front end. The harvested cereal mash that has entered is pulled up by the nail of the pulling device 14, and then the stock of the cereal mash is cut by the cutting blade 16 while being scraped by the scraping device 15. Furthermore, the culm that has been scraped backward by the scoring device 15 is merged by the left and right and central scoring transport chains and the tip transport chain constituting the lifting and transporting device 17, and the combined culm is treated deeply. It is conveyed to the threshing part C while adjusting the handling depth by the conveying chain 18.

  Further, the threshing section C forms a handling chamber at the upper part of a machine frame including a cylinder cover 19 and the like covering the front and rear walls, the left and right side walls, the bottom plate, and the upper part. A threshing feed chain 20 for sandwiching and transporting the cereal grains along the handle and a holding rail 21 provided on the cylinder cover 19, a first handling cylinder provided with a plurality of teeth arranged around the circumference, and a receiving net are provided. In addition, a processing chamber for processing sawdust mixed with grains that could not be shattered in the processing chamber is provided in parallel from the rear end tip side of the first processing barrel toward the rear of the machine body. Is provided with a second handling cylinder and a receiving net. Further, below the first and second handling cylinders, there is provided a sorting chamber composed of a rocking sorter for sorting grains and the like leaked from the receiving net and a sorting air passage.

  The grain that has been threshed and selected by the threshing section C is transferred to the grain tank 9 that constitutes the harvesting section D. The grain tank 9 temporarily stores the grain, and then the discharge auger 10. To release to containers outside the machine. The Glen tank 9 is configured to be rotatable about the longitudinal spiral cylinder 10a on the base side of the discharge auger 10 with the front side facing the outer side of the machine body. Further, the discharge auger 10 has a vertical spiral cylinder 10a on the base side that can be turned by a hydraulic motor, and a vertical helical cylinder 10b on the front end side that can be swung up and down by a hydraulic cylinder 22 so that the machine body can be moved from the body storage posture. It can be changed to the rear discharge posture.

  In addition, dusts, such as swarf and dust which generate | occur | produce in the threshing part C, are attracted | sucked by the dust exhaust fan provided in the selection chamber, and are discharged | emitted behind the threshing part C from the dust exhaust port. Further, the waste discharged from the handling chamber after completing the threshing process is transported toward the waste processing device E by the waste transporting device, and the disk cutter 11 constituting the waste processing device E is The waste that has been transported by the waste transporting device is shredded and released as cuttings to the cutting area.

  Next, the driving part F that drives each part of the airframe will be described. As shown in FIGS. 4 to 6, the driving part F includes a vertical water-cooled four-stroke diesel engine 23. The engine 23 has its crankshaft 23a placed on the left and right sides of the fuselage so that the output pulley 24 that drives each part of the combine 1 is on the center side of the fuselage frame 2 and the cooling fan 25 is on the right side of the fuselage frame 2. It is mounted on the body frame 2 through the anti-vibration rubber 26 in the direction.

  In addition, in order to comply with exhaust gas regulations, this diesel engine 23 stores fuel that has been made high pressure by a supply pump in a rail (accumulation chamber) 23b, and is suitable for each cylinder from an injector at a timely timing under ECU control. Adopts a common rail system that injects a quantity of fuel, thereby making the fuel finer by high fuel injection pressure, reducing the amount of unburned fuel and suppressing the generation of particulate matter.

  In addition, a turbocharger that forcibly feeds high-density air and an air-cooled intercooler will be installed to increase engine output, improve fuel efficiency, and reduce emissions of carbon dioxide and particulate matter. In addition, an EGR system that recirculates a part of the exhaust gas to the engine 23 by an EGR (Exhaust Gas Recirculation) valve, a throttle valve, a water-cooled EGR cooler that lowers the temperature of exhaust gas that becomes high temperature, etc. is adopted. The generation of nitrogen oxides is suppressed by lowering the combustion temperature.

  As exhaust gas regulations are further strengthened, particulate matter contained in exhaust gas is captured by a filter, and DPF system that regenerates DPF for combustion and disposal, and urea is sprayed to obtain ammonia by hydrolysis reaction. Thus, an exhaust gas purifying device (post-treatment device) that employs a urea SCR system that reacts ammonia and nitrogen oxides of the reducing agent to reduce them to nitrogen and water is employed.

  The DPF system and the urea SCR system incorporate a DPF case 27 containing a diesel oxidation catalyst (DOC) and a diesel particulate filter (DPF), a diesel oxidation catalyst (DOC), and a urea selective catalytic reduction (SCR). An SCR case 28 and a urea water tank are provided. Among these, the DPF case 27 and the SCR case 28 are attached to a portal-like auxiliary equipment mounting frame 29 provided near the rear portion of the engine 23 via a bracket, and each is provided above the engine 23. Further, the urea water tank is provided, for example, in an empty space of the body frame 2 behind the Glen tank 9.

  On the other hand, a radiator 30 that cools the cooling water of the engine 23 is provided in front of the cooling fan 25 of the engine 23. The radiator 30 is attached to a radiator bracket 31 erected from the machine body frame 2 through a grommet on the upper, lower, left and right sides. In addition, a fan shroud is provided on the back surface of the radiator 30, and the air sucked by the cooling fan 25 cools the cooling water of the engine 23 while passing between the fins of the radiator 30. Cool by exhaust air.

  Further, heat exchangers such as an oil cooler 32 and an intercooler 33 are provided on the front side of the radiator 30, and these heat exchangers also cool each medium by the air sucked by the cooling fan 25, similarly to the radiator 30. Can do. The cooling fan 25 of the engine 23 is provided with a forward / reverse mechanism that is driven by switching its rotation between forward and reverse by a forward rotation pulley and a reverse rotation pulley that are switched by an electric motor (not shown).

  Further, a dust-proof net is provided on the front surface of the radiator 30 and the heat exchangers 32 and 33, and a side cover 35 is provided in which the ventilation opening is closed with a porous plate 34 (see FIG. 1). The rear portion of the side cover 35 is pivotally supported by a cover mounting frame (not shown) that is erected from the body frame 2 so as to cover the right side of the driving portion F at all times, and to clean the dust-proof net, etc. When performing, the maintenance can be performed by opening it outward.

  Further, an air cleaner 36 is attached to the auxiliary equipment mounting frame 29 so that the longitudinal direction thereof is in the left-right direction, almost directly above the radiator 30 and the engine 23. The air cleaner 36 takes in the air preliminarily purified by the precleaner 37 provided on the upper side of the intake air, filters the dust with an element accommodated in the cylindrical case, and supplies clean air to the engine 23. The air cleaner 36 is integrally provided with an air flow sensor provided for DPF regeneration or the like.

  Next, a description will be given of the cabin 7 that constitutes a control unit including a driver's seat and an operation panel. As shown in FIGS. 1 to 3, 6, and 7, the cabin 7 is fitted into a cabin frame 38 that forms a skeleton thereof, a roof 39 provided on the upper portion of the cabin frame 38, and a front opening of the cabin frame 38. A windshield 40 to be included, a left side panel 41 that forms the left side surface of the cabin 7, a left side glass 42 that is openable and closable at an opening of the left side panel 41, a back panel 43 that forms the back side of the cabin 7, and a back surface A rear glass 44 provided at the opening of the panel 43 so as to be freely opened and closed, a right side glass 45 fitted into the right side near the rear part of the cabin frame 38, and a door 46 provided at the entrance and exit formed on the right side near the front part of the cabin frame 38. .

  As shown in FIG. 7, the cabin frame 38 includes a ceiling frame 38 a that forms a rectangular shape, a right front column 38 b and a right intermediate column 38 c that serve as a door frame for an entrance, and a left front portion that is provided on the left front of the cabin 7. The support post 38d, the left rear support post 38e provided at the left rear part of the cabin 7, the right rear support post 38f provided at the right rear part of the cabin 7, and the vertical middle part of the right front support post 38b and the left front support post 38d of the door frame are connected. A U-shaped front connection frame 38g, a rear connection frame 38h for connecting the lower part of the right rear column 38f and the left rear column 38e, and a right connection frame 38i for connecting the lower part of the right rear column 38f and the right intermediate column 38c. Etc.

  Further, the cabin frame 38 is provided with a rectangular floor frame 38j below the right front column 38b and the right intermediate column 38c, and a long square between the left front column 38d and the left rear column 38e and the floor frame 38j. The left operation frame 38k is provided using a pipe or the like. Further, a cover mounting frame 38l is provided from the rear part of the floor frame 38j to the rear connection frame 38h using a plate, an angle material or the like. Then, the floor frame 38j of the cabin frame 38 is attached to the operation frame 47 provided at the right front portion of the airframe frame 2, and the rear portion of the cabin frame 38 is attached and supported to the auxiliary equipment attachment frame 29 standing from the airframe frame 2. Then, the cabin 7 is mounted on the fuselage frame 2.

  The right front column 38 of the entrance / exit is erected substantially vertically from the front end of the floor frame 38j, while the right intermediate column 38c is formed from the lower side a that rises substantially vertically from the rear part of the floor frame 38j and the lower side a. It has a middle side b that inclines upward after about 60 degrees, and an upper side c that rises substantially perpendicularly from the middle side b. Therefore, the entrance has a wider upper side than the lower side. In addition, a door 46 configured by attaching a transparent plate such as glass to a pipe frame is provided at the entrance.

  And the door 46 provided in the said entrance / exit is made to support the upper side roller provided in the front upper side on the upper rail of the cabin 7. As shown in FIG. Further, the intermediate rail provided at the upper and lower intermediate positions of the door 46 is supported by the intermediate roller provided in the cabin 7. Further, a lower roller provided on the front lower side of the door 46 via an auxiliary rail is supported by the lower rail provided on the cabin 7, whereby the door 46 slides along the outer surface of the cabin 7 or the side cover 35. The entrance / exit can be opened and closed.

  On the other hand, the interior relation of the cabin 7 will be briefly described. The windshield 40 is formed on the front part of the ceiling frame 38a that projects in a bowl shape, the right front support column 38b and the left front support column 38d, and the front connection frame 38g. The front opening to be formed is fitted so that the upper side protrudes forward from the lower side, for example, so that the operator can visually recognize the front and lower weed boards 12 and the like in a standing posture. Further, the front panel 48 provided below the windshield 40 bulges forward from the right front column 38b and the left front column 38d to secure an operator's knee and foot arrangement space (see FIG. 1).

  Furthermore, a stay in the left-right direction is provided behind the front panel 48, and a multi-steering lever 49 and an armrest 50 for steering the aircraft and raising and lowering the cutting part B are provided on the right side of the stay. An ignition key for starting and stopping the engine is provided below the multi-steer lever 49, and an ECU (Electronic Control Unit) for controlling the liquid crystal monitor is provided on the left side of the ignition key. In addition, a control panel (operation panel) 52 for mounting a liquid crystal monitor 51 for displaying the engine speed and the working state on the center is provided at the upper part. Further, a rear panel is provided below the control panel 52 and covers the back side thereof (see FIG. 3).

  Further, the left operation frame 38k of the cabin frame 38 includes a side plate 53 having an inspection port, a lever guide plate 55 having a lever insertion hole and a switch case 54, and a rear plate 56 which is inclined rearward and also has a lever insertion hole. And the lower side of the left side panel 41 is covered with these plates (see FIGS. 3 and 7).

  The left end of the control panel 52 is placed on the front side of the lever guide plate (operation panel) 55. On the left end side of the control panel 52, switches and operation tool groups that are frequently used during work are placed. A main transmission lever 58 and a sub-transmission lever 59 for operating the traveling HST and the sub-transmission device of the transmission are provided behind the front 57. The switch case 54 on the rear side is provided with a switch or dial related to steering, threshing, DPF or the like that is not frequently used.

  Further, a lever guide is attached to the lever insertion hole of the rear plate 56 to provide a cutter / drainer switching lever (not shown). The right end of the rear plate 56 constitutes a part of the cover mounting frame 38l as described later. The inspection ports provided on the side plate 53 and the lever guide plate 55 are provided with detachable lids 53a and 55a, and the lever linkage mechanism and the like can be maintained from these inspection ports.

  On the other hand, a rectangular plate 60 is attached to the floor frame 38j of the cabin 7, and a mat is laid thereon to constitute a floor. Further, the lower cover 61 formed of a rectangular plate is vertically fixed to the cover mounting frame 38l closer to the rear of the floor by welding the periphery thereof. The right end of the cover mounting frame 38l is provided by welding to the lower side a which is the vertical direction of the right intermediate column 38c. Further, a rear cover 62 is detachably provided on the upper rear side of the lower cover 61.

  That is, the cover attachment frame 38l for attaching the rear cover 62 includes a right side d extending from the middle side b of the right intermediate column 38c to the rear horizontal frame 38h, a left side e provided at the right end of the rear plate 56, and the front surface of the rear horizontal frame frame 38h. Are formed by a rectangular frame including an upper side f provided on the lower cover 61 and a lower side g provided on the upper rear side of the lower cover 61. Therefore, a large maintenance opening is formed inside the frame. Then, the opening can be closed if the rear cover 62, which has a rectangular outer shape, is tightly supported on each side of the mounting frame 38l and fastened with bolts 63.

  At that time, the rear cover 62 is attached to the upper end of the lower cover 61 so as to incline rearward upward by about 60 degrees, like the middle side b of the right intermediate column 38c. Further, since the rear plate 56 provided on the left side is also provided at the same inclination angle, a sufficient installation space for the air cleaner 36 and the exhaust purification devices 27 and 28 can be provided on the rear side of the rear cover 62 and the rear plate 56. Furthermore, the rear cover 62 can be removed, and maintenance of the engine 23 and the exhaust emission control devices 27 and 28 can be performed from the opening of the cover mounting frame 38l.

  As shown in FIGS. 11 and 12, the rear cover 62 is integrally formed with a concave portion 62a that is recessed on the back surface so as to face the upper side of the engine 23, and the right and left side surfaces of the concave portion 62a. Is closed with the side plate 62b to which is attached. Further, the reinforcing members 64 and 65 are fixed to the rear surface of the rear cover 62 on the left and right sides and below the concave portion 62a. Further, a fitting side 66 protruding from the back surface of the rear cover 62 is provided to circulate.

  Therefore, when the rear cover 62 is attached to the cover attachment frame 38l, the fitting side 66 is fitted into the cover attachment frame 38l so that the rear cover 62 is positioned, and the rigidity of the rear cover 62 is determined by the recess 62a and the reinforcing members 64 and 65. Thus, the rear cover 62 can be attached to the cover mounting frame 38l with a small gap.

  A rectangular inspection port 62 c is provided near the lower portion of the rear cover 62. The inspection port 62c is normally closed with a lid 66, and when the engine oil storage amount is confirmed or the engine oil is replenished, the lid 66 is removed with a bolt 63a with a knob, and the inspection port 62c is operated. It can be performed.

  Furthermore, as shown in FIGS. 13 and 14, the driver's seat 67 on which an operator sits and operates is attached to the cabin 7 via a height adjusting device and a front / rear adjusting mechanism. The front / rear adjustment mechanism includes a lower rail, an upper rail, a front / rear adjustment lever, and the like. The lower rail 68a is fixed to the left and right sides of the seat mounting plate 68 in the front-rear direction, and the upper rail 69a is fixed to the left and right sides of the seat bracket 69. The lower rail 68a is slidably fitted back and forth. A plurality of notches 68b are provided on the side surface of the lower rail 68a on the right side with a predetermined interval. The front / rear adjustment lever 70 is rotated to slide the driver's seat 67 back and forth. If the notch 70a provided at one end is engaged with any one of the notches 68b, the front-rear position of the driver's seat 67 can be adjusted.

  Further, the height adjusting device includes a gas cylinder 72 provided with an elevation adjusting lever 71 and a cylinder bracket 73 for holding the gas cylinder 72, and the upper portion of the gas cylinder 72 is fitted to the lower surface of the seat mounting plate 68, The seat mounting plate 68 and the stay 73 a of the cylinder bracket 73 are connected by a non-rotating link 74. As shown in FIG. 8, when the cylinder bracket 73 is bolted to the lower cover 61 and the stay 73a is bolted to the rear cover 62, the driver's seat 67 can be installed in the cabin 7, and the operator can perform this driving. When the lift adjustment lever 71 is operated while sitting on the seat 67, the height of the driver seat 67 can be adjusted by the gas cylinder 72.

  The driver's seat 67 includes a seat cushion (seat surface) 67a that is rotatably attached to the front end of the seat bracket 69, and a seat back (backrest) 67c that adjusts an inclination angle via a reclining adjuster 67b. From the normal state in which the rear portion of 67a is placed on the seat bracket 69 via the elastic body 67d, the driver's seat 67 is turned forward around a turning fulcrum provided at the front end, or the seat back 67c is moved as a reclining lever. It is also possible to fold the seat cushion 67a by operating the 67e.

  Further, when the cylinder bracket 73 of the height adjusting device is attached to the lower cover 61 and the rear cover 62 and the driver's seat 67 is lowered and moved backward, the rear portion of the seat bracket 69 and the lower portion of the seat back 67c are reclining. The rear portion of the adjuster 67 b or the seat cushion 67 a is accommodated in the recess 62 a of the rear cover 62. Therefore, even if the cover that is conventionally provided rearward from the driver's seat 67 is transferred to the front to form the rear cover 62 that is inclined, the driver's seat 67 can be disposed at a position that is not different from the conventional one by the recess 62a. it can.

  Accordingly, it is possible to operate the front multi-steering lever 49 with ease while sitting on the driver's seat 67, and to appropriately view the display content of the liquid crystal monitor 51. In addition, it is possible to avoid deterioration of comfort and operability that occur when the driver's seat 67 is moved forward while avoiding interference with the rear cover 62. Alternatively, the cabin 7 and the aircraft can be compactly assembled without particularly increasing the size of the control section A.

  Then, the combine 1 configured as described above operates the ignition key to start the engine 23, and operates the main transmission lever 58 and the multi-steer lever 49 to perform traveling and cutting. In this case, the engine 23 is preliminarily purified by a precleaner 37 provided in the upper part of the machine body, and clean air obtained by filtering dust by the air cleaner 36 is sucked into the cylinder and the fuel that has been pressurized by the common rail system through the injector. It is injected and burned to obtain rotational power.

  Further, exhaust gas discharged from the engine 23 is led to the DPF case 27 and the SCR case 28 through the connection pipe, particulate matter such as soot is collected by the DPF, and nitrogen oxides are converted into harmless nitrogen by the SCR. It is converted and finally discharged from the exhaust port 76 of the tail pipe 75 connected to the SCR case 28 toward the rear of the machine body above the Glen tank 9.

  In the present invention, in particular, the air cleaner 36 is provided almost directly above the radiator 30 and the engine 23 (on the center line of the crankshaft 23a) so that the longitudinal direction thereof is the left-right direction. Therefore, the connection pipe 77 between the air cleaner 36 and the engine 23 can be made shorter than that in which the air cleaner 36 is provided closer to the rear of the engine 23, and the intake resistance during this time can be reduced. Further, when the air flow sensor provided for DPF regeneration is provided integrally with the air cleaner 36, the length of the connection pipe is not limited as in the case where the air flow sensor is provided in the middle of the connection pipe, and the air cleaner is positioned almost directly above the engine 23. 36 can be provided by shortening the connecting pipe 77.

  Also, the DPF case 27 and the SCR case 28 are provided near the rear of the air cleaner 36 above the engine 23 so that the longitudinal direction thereof is the left-right direction. Therefore, the connection pipes 78 and 79 that lead the exhaust gas from the engine 23 to these cases are shortened and introduced into the DPF and the SCR without lowering the exhaust temperature as much as possible, thereby effectively exerting these purification actions. Can be made. In addition, if the SCR case 28 is provided above the air cleaner 36 and the DPF case 27, the exhaust gas purifying device can be compactly integrated and arranged above the engine 23, and the arrangement space of the Glen tank 9 and the like can be invaded. Nor.

  Moreover, if the DPF case 27 and the SCR case 28 that are at a high temperature are provided closer to the lower part of the machine body, there is a risk that sawdust generated during the cutting operation may come into contact with them and ignite, and it is necessary to provide a cover or the like that covers them. is there. However, if it is provided at a relatively high position above the engine 23, the chance of contact with sawdust and the like is reduced, and these are blown away by the exhaust air of the cooling fan 25 described later, and the ambient temperature of the case can be lowered. Thus, it is possible to eliminate the risk of ignition without providing a special cover. Further, when the exhaust port 76 of the tail pipe 75 connected to the SCR case 28 is provided in the upper part of the fuselage to eliminate the possibility of ignition, if the SCR case 28 is provided at a high position, the length of the tail pipe 75 is shortened. It can be advantageous.

  On the other hand, the cabin 7 constituting the control unit A includes a lower cover 61 that rises substantially vertically from the rear end of the floor 60 and a rear cover 62 that tilts rearward from the upper end of the lower cover 61 to control the control unit A and the driving unit F. These covers 61 and 62 block noise, hot air, or dust that tends to enter the control section A from the driving section F. Moreover, it plays the role of the guard which prevents an operator's contact with the engine 23 grade | etc., Which becomes high temperature.

  The lower cover 61 and the rear cover 62 serve as engine covers that cover the front side of the engine 23, the radiator 30, the air cleaner 36, and the exhaust purification devices 27 and 28 when viewed from the driving part F. Therefore, the noise outside the vehicle is reduced by blocking the sound and vibration of the engine 23. Further, the air flowing in from the side cover 35 by the cooling fan 25 is guided to the driving part F without being released, thereby cooling the driving part F and preventing overheating of the engine 23.

  Accordingly, when the cover surrounding the driving portion F is examined again, a side cover 35 that takes in outside air is provided on the front surface of the radiator 30 and the air cleaner 36 that cool the cooling water of the engine 23 by the suction air of the cooling fan 25. The right side of the part F is covered. Further, the rear side of the prime mover F is covered with a front wall of the Glen tank 9 or an engine cover provided separately. The front and upper sides of the driving portion F are covered with a lower cover 61 and a rear cover 62 that divide the cabin 7 from the inside and outside.

  Therefore, the exhaust air from the cooling fan 25 passes through the periphery of the engine 23, the DPF case 27, or the SCR case 28, and is finally discharged from the opened body side or the lower side of the body. Heat is taken from the engine 23 main body, the DPF case 27, or the SCR case 28 and cooled to prevent overheating. However, in this case, if there is little space for exhaust air to pass through, the cooling fan 25 may be overloaded, and the heat taken away may be trapped in the driving part F to increase the ambient temperature or increase the internal pressure.

  Therefore, it is preferable that the accommodating space of the driving part F surrounded by the above-described cover is a well-balanced space having an appropriate size, and when the exhaust gas purifying devices 27 and 28 are provided in the driving part F, Naturally, it is desirable to widen the accommodating space of the driving part F. Therefore, in the present invention, the rear cover 62 that covers the front side of the body of the engine 23, the radiator 30, the air cleaner 36, and the exhaust purification devices 27, 28 is inclined rearward so that a space that is not particularly necessary for the control unit A is provided. Allocating to the driving part F, thereby widening the accommodating space of the driving part F without changing the layout of each part of the machine body, and making the heat balance and internal pressure of the engine appropriate.

  In addition, if the cover for partitioning the driving part F and the control part A is formed like a conventional step, the number of plates increases due to the combination of the vertical plate and the horizontal plate, or the plate needs to be bent. Processing and assembly costs increase. Further, when the bent cover is attached to the attachment portion, there is a considerable gap between them, and dust enters the control portion A from the driving portion F through this gap, which is not preferable. However, since the lower cover 61 and the rear cover 62 are formed of two flat plates and can be attached to the cover mounting frame 38l with close contact with each other without a gap, sound insulation and dust proofing from the driving portion F are ensured. be able to.

  Moreover, since the sawdust and the like that fall on the rear cover 62 slide down toward the floor 60 by the slope that rises thereafter, the control section A can be kept clean. Since the air cleaner 36 is provided almost directly above the engine 23 and the exhaust gas purification devices 27 and 28 are provided near the rear of the air cleaner 23, the exhaust gas purification devices 27 and 28 that are at a high temperature are connected to the rear cover 62 of the control unit A. Therefore, it is possible to reduce the influence of the heat on the control section A of the exhaust gas purifying devices 27 and 28 and to make a comfortable control section A.

  Further, when a recess 62a facing the engine 23 is formed in the rear cover 62, and the lower part of the back 67c of the driver's seat 67 is accommodated in the recess 62a, the accommodating space of the driving part F is slightly increased by the recess 62a. Although it becomes narrower, the driver's seat 67 can be arranged at a position that is almost the same as the conventional one. Therefore, the driver's seat 67 is moved to the front to increase the size of the control section A, and the driver's operation is not affected. The part A can be configured compactly as a whole.

  In addition, one side of the cover attachment frame 38l for attaching the lower cover 61 and the rear cover 62 is provided along the right intermediate column 38c serving as a door receiving frame and welded thereto. Therefore, the cabin 7 can be manufactured at a lower cost than the case where the frame for the cover mounting frame 38l is welded separately from the right intermediate column 38c or the like, and the occurrence of welding distortion is reduced, and the accuracy of the cabin 7 is improved. Can be raised.

  In maintenance of the engine 23, for example, when checking engine oil or radiator cooling water, or replacing an EGR cooler hose or exhaust manifold, etc., the bolts for attaching the cylinder bracket 73 are removed and the driver's seat 97 is removed. When the rear cover 62 is removed, a wide opening that faces the front side of the airframe of the engine 23 and the exhaust emission control devices 27 and 28 appears, so that maintenance can be performed from this opening.

  Further, when the side cover 35 of the engine 23 is opened, the air cleaner 36 and the intake portion of the radiator 30 can be cleaned and replaced. Further, the glen tank 9 is rotated to secure a working space, and the engine 23 By removing the engine cover and the like covering the rear, it is possible to replace the engine oil filter, check and adjust the cooling fan belt, and replace the DPF differential pressure sensor hose pipe and the EGR system piping.

  In the embodiment, the control unit A is configured by the cabin 7. However, the control unit A may not be provided with a roof in the upper part, and the control unit A may be an airframe as described in Prior Art Document 1. The engine 23 and the like may be maintained by rotating outward. Furthermore, the lower cover 61 may also be provided with an inspection port covered with a lid, and the present invention is not limited to the above embodiment.

1 Combine 2 Airframe 7 Cabin 23 Diesel Engine 27 DPF Case (First Exhaust Gas Purifier)
28 SCR case (second exhaust gas purification device)
30 Radiator 36 Air cleaner 52 Control panel (operation panel)
55 Lever guide plate (control panel)
60 plates (floor)
61 Lower cover 62 Rear cover 67 Driver's seat A Maneuvering part B Mowing part C Threshing part D Grain collection part E Excretion processing device F Driving part

Claims (5)

  In a combine in which a diesel engine and a radiator are provided in the left and right direction on the fuselage frame, an air cleaner and an exhaust gas purifying device are provided above the engine and the radiator, and a control unit including a driver's seat and an operation panel is provided in front of them. The engine, the radiator, the air cleaner, and the exhaust purification device are covered with a lower cover that rises substantially vertically from the rear end of the floor of the control unit, and a rear cover that is inclined upward from the upper end of the lower cover. A featured combine.   The longitudinal direction of the air cleaner and the exhaust gas purification device is the left-right direction that is the same direction as the crankshaft of the engine, and one air cleaner is substantially directly above the engine and the radiator, and the other exhaust gas purification device is The combine according to claim 1, wherein the combine is provided near the rear of the air cleaner.   The combine according to claim 1 or 2, wherein a recess facing the upper side of the engine is formed in a rear cover of the control unit, and the lower part of the backrest of the driver's seat is accommodated in the recess.   The combine according to any one of claims 1 to 3, wherein one side of the attachment frame of the lower cover and the rear cover is provided by using an intermediate support post serving as a door receiving frame.   The combine according to any one of claims 1 to 4, wherein a rear cover of the control unit is detachable.

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