JP2018134048A - Combine - Google Patents

Abstract

An object of the present invention is to increase the support rigidity of an exhaust gas purification device. A combine according to an embodiment includes an engine on a fuselage frame, an exhaust gas purification device that purifies the exhaust gas of the engine on the fuselage frame, and a rear side of the engine, on the upper left and right sides of the fuselage frame. A combiner provided with a threshing device for threshing cereals on one side and a grain tank for storing threshed grain on the upper left and right sides of the body frame, constituting a part of the exhaust gas purification device, engine A urea SCR catalyst that reduces and purifies the exhaust gas from the urea water by using ammonia generated from the urea water is provided behind the engine on the fuselage frame and between the threshing device and the glen tank. A support member for hanging and supporting the urea SCR catalyst is provided by fixing at least one of the side surfaces facing the outside of the machine body. [Selection] Figure 4

Description

  The present invention relates to a combine.

  In a conventional combine, a diesel engine as a drive source is provided on a body frame. In addition, some of such combines are provided with an exhaust gas purifying device for purifying exhaust gas of a diesel engine on the body frame in order to adapt to exhaust gas regulations that have been strengthened in recent years.

  Further, the exhaust gas purification device includes a urea SCR (Selective Catalytic Reduction) catalyst that purifies the ammonia produced from an aqueous urea solution (hereinafter referred to as “urea water”) by reacting with nitrogen oxides in the exhaust gas. There is something. The urea SCR catalyst is housed in, for example, a cylindrical case (hereinafter referred to as “urea SCR catalyst” including the case).

  As the urea SCR catalyst, for example, there is a urea SCR catalyst that is fixed on a lower body frame and connected to a DPF (Diesel Particulate Filter) that constitutes an exhaust gas purification device together with a urea SCR catalyst through a pipe (for example, , See Patent Document 1).

JP, 2006-50498, A

  However, since the urea SCR catalyst that constitutes a part of the exhaust gas purifying apparatus in the conventional combine as described above is supported on the body frame only by fixing the lower part, the support rigidity is low. The conventional combine as described above has room for improvement in terms of increasing the support rigidity of the urea SCR catalyst, that is, the support rigidity of the exhaust gas purification device.

  This invention is made | formed in view of the above, Comprising: It aims at providing the combine which can raise the support rigidity of an exhaust-gas purification apparatus.

In order to solve the above-described problems and achieve the object, the present invention takes the following technical means.
According to a first aspect of the present invention, an engine is provided on the fuselage frame, an exhaust gas purification device for purifying exhaust gas of the engine is provided on the fuselage frame, and the rear of the engine, In a combine provided with a threshing device for threshing cereals on the upper left and right sides and a grain tank for storing threshed grains on the upper left and right other sides of the body frame, a part of the exhaust gas purification device is The urea SCR catalyst configured to reduce and purify the exhaust gas of the engine using ammonia generated from urea water is disposed behind the engine on the fuselage frame between the threshing device and the Glen tank. The urea SCR catalyst is fixed by fixing at least one of the left and right side surfaces of the urea SCR catalyst facing the outside of the fuselage. Ri lowered to combine the support member is provided for supporting.

  According to a second aspect of the present invention, there is provided the combine according to the first aspect, wherein the support member has a long body shape, and both end portions of the support member are fixed directly or indirectly to the body frame.

  According to a third aspect of the present invention, one end of the both ends of the support member is fixed to an outer wall of an engine room housing the engine on the body frame, and the other end of the support member is The combine according to claim 1 or 2, wherein a traveling device that projects upward from the body frame and that is provided below the body frame is fixed to a mounting portion of a pitching cylinder that performs pitching driving.

  According to a fourth aspect of the present invention, the exhaust gas purifying device includes a DPF that removes particulate matter in the exhaust gas, the DPF is disposed below, and the urea SCR catalyst is disposed above to dispose the DPF. The combine according to any one of claims 1 to 3, wherein a left and right side surface and a left and right side surface of the urea SCR catalyst are connected by a connecting member.

  According to the first aspect of the present invention, the urea SCR catalyst is suspended and supported by fixing the upper part of the urea SCR catalyst that is a part of the exhaust gas purifying device, so that the vibration of the urea SCR catalyst (particularly the urea SCR) is supported. Vibration of the upper part of the catalyst) can be suppressed. As a result, the support rigidity of the urea SCR catalyst is increased, and the support rigidity of the exhaust gas purification device including the urea SCR catalyst can be increased.

  According to the invention described in claim 2, in addition to the effect of the invention described in claim 1, the support member and the machine frame are substantially integrated by fixing both ends of the support member to the machine frame. Can be made. As a result, the support rigidity of the urea SCR catalyst is further increased, and the support rigidity of the exhaust gas purification device including the urea SCR catalyst can be further increased.

  According to the invention described in claim 3, in addition to the effect of the invention described in claim 1 or 2, the both ends of the support member are firmly installed on the body frame as compared with other parts. By fixing to the engine room and the mounting portion of the pitching cylinder, the support member and the body frame can be substantially integrated, and the support member can be disposed at a high position on the body frame. Thereby, the suspension support of the exhaust gas purification device (urea SCR catalyst) can be performed.

  According to the invention described in claim 4, in addition to the effect of the invention described in any one of claims 1 to 3, the exhaust gas purification device is configured by the DPF and the urea SCR catalyst. The engine exhaust gas can be effectively purified. Further, by arranging the DPF and the urea SCR catalyst vertically, the exhaust gas purification device can be made compact on the body frame.

It is a right view of the combine which concerns on embodiment. It is a left view of the combine which concerns on embodiment. It is a schematic plan view for explanation showing the arrangement of the exhaust gas purification device. It is a right side view for explanation showing a support structure of an exhaust gas purification device. It is an expansion right side view for explanation showing a support structure of an exhaust gas purification device. It is an explanatory top view which shows the support structure of an exhaust-gas purification apparatus. It is a front view for description which shows arrangement | positioning of each part in an engine room. It is a right side view for explanation which shows arrangement of each part in an engine room. It is a top view for description which shows arrangement | positioning of each part in an engine room. It is an explanatory front view which shows arrangement | positioning of a hydraulic valve. It is a left view for description which shows arrangement | positioning of a hydraulic valve. It is an explanatory top view which shows arrangement | positioning of a hydraulic valve. It is a top view (the 1) for explanation which shows a cabin open structure. It is a top view (the 2) for explanation which shows a cabin open structure. It is an explanatory top view which shows arrangement | positioning of a compressor. (A) is the explanatory left view which shows a traveling apparatus (the 1), (b) is the explanatory left side view which shows a traveling apparatus (the 2). (A) is the explanatory left view which shows the modification of a traveling device (the 1), (b) is the explanatory left view which shows the modification of a traveling device (the 2). It is front sectional drawing for description which shows the structure of the rolling arm of a traveling apparatus. It is a front view for description which shows the floor step in a cabin. It is a top view for description which shows the floor step in a cabin.

  An embodiment of a combine according to the present invention will be described in detail with reference to the drawings. In addition, this invention is not limited by this embodiment, In the range which does not deviate from the main point of this invention, it can implement in various deformation | transformation. Furthermore, constituent elements in the following embodiments include those that can be easily replaced by those skilled in the art, or those that are substantially the same, that is, so-called equivalent ranges.

  1 and 2 are left and right side views of the combine 1 according to the embodiment. In the following description, the front-rear direction, the left-right direction, and the up-down direction in the normal usage mode of the combine 1 will be described as the respective front-rear direction, left-right direction, and up-down direction in each part.

  Among these, the “front” direction is the traveling direction of the combine 1 during the cutting operation, the “left” direction is the left-hand direction toward the front, and the “lower” direction is the direction in which gravity acts. In addition, these directions are defined for convenience in order to make the explanation easy to understand, and the present invention is not limited by these directions. Hereinafter, the combine 1 may be referred to as “airframe”.

<Overall configuration of combine 1>
First, the overall configuration of the combine 1 will be briefly described. As shown in FIGS. 1 and 2, the combine 1 includes a body frame 2, a traveling device 3 provided below the body frame 2, and various operations provided above the body frame 2 and in front of the body frame 2. The apparatus includes a control unit (hereinafter referred to as “cabin”) 7, which will be described later, provided on the upper front side of the body frame 2. The cabin 7 is provided with various operation levers and instruments.

  The traveling device 3 includes a pair of left and right crawler belts 3a that circulates when power is transmitted from the engine 11 installed on the body frame 2. The traveling device 3 causes the aircraft to travel as the crawler belt 3a goes around. The crawler belt 3a is formed endlessly by an elastic body such as rubber. The traveling device 3 includes drive wheels 3b that rotate the crawler belt 3a and tension wheels 3c that apply tension to the crawler belt 3a in the longitudinal direction of the machine body. In addition, the more detailed structure of the traveling apparatus 3 is later mentioned using FIGS.

  For example, the working device is provided on the left side of the upper part of the body frame 2, the harvesting device 4 provided in front of the body frame 2, the grain feeder 5 provided on the left side of the cabin 7 on the body frame 2. A threshing device 6, a grain tank 8 provided on the upper right side of the machine body frame 2, and a grain discharge auger (vertical auger 9 a and horizontal auger 9 b) disposed above the threshing device 6 and the grain tank 8 are provided.

  In the working device, the cereals harvested by the reaping device 4 are transported toward the threshing device 6 by the cereal transporting device 5, and the grains threshed and selected by the threshing device 6 are stored in the Glen tank 8. The stored grain is discharged to the outside of the machine body by a grain discharge auger (vertical auger 9a and horizontal auger 9b). The Glen tank 8 is configured to be rotatable from a work position on the machine body frame 2 to a maintenance position on the outer side of the machine frame 2 around a vertical axis provided on the rear side of the Glen tank 8.

  As described above, the cabin 7 provided on the upper front side of the body frame 2 functions as a control unit. The cabin 7 is provided with a pilot seat (not shown), various control levers, instruments and an operation panel, and a monitor capable of displaying various information. The cabin 7 has a so-called cabin open structure that is provided to be rotatable toward the outer side of the machine body. The cabin open structure will be described later with reference to FIGS. 13 and 14.

  The reaping device 4 includes a weed stalk 4a for weeding the cereals in the field, a pulling device 4b for causing the weed cereals, and a cutting blade for cutting the roots of the caused cereals. In the reaping device 4, the cereals to be planted in the field are weeded with the weed stalk 4a, the sown cereals are caused by the pulling device 4b, and the caused cereals are harvested by the cutting blade. In addition, the harvested corn straw is conveyed toward the threshing apparatus 6 by the corn flour conveying apparatus 5.

  In the threshing device 6, the grains selected by the selection unit after threshing are fed into the glen tank 8 by the cerealing device. In the grain tank 8, the stored grain is fed into a vertical auger 9a which is a grain discharge auger provided behind the grain tank 8 (back of the machine body frame 2). In the vertical auger 9a, the fed grain is fed into the horizontal auger 9b which is a grain discharge auger. In the grain discharge auger 9b, the fed grain is discharged from a discharge tube 9c provided at the tip of the horizontal auger 9b.

  As shown in FIG. 1, an engine room 10 is provided below the cabin 7 on the body frame 2. In the engine room 10, a radiator 12 (see FIG. 7) for cooling the engine 11 is accommodated in addition to an engine (diesel engine) 11 that is a power source. In addition, arrangement | positioning of each parts, such as the radiator 12 accommodated in the engine room 10, is later mentioned using FIGS.

<Configuration of exhaust gas purification device 20>
Next, the configuration of the exhaust gas purification device 20 will be described with reference to FIGS. FIG. 3 is a schematic plan view for explanation showing the arrangement of the exhaust gas purification device 20. FIG. 4 is a right side view for explanation showing the support structure of the exhaust gas purifying device 20. FIG. 5 is an enlarged right side view for explanation showing the support structure of the exhaust gas purifying device 20. FIG. 6 is an explanatory plan view showing a support structure of the exhaust gas purification device 20.

  As described above, the engine room 10 that houses the engine 11 (see FIG. 1) is provided below the cabin 7 on the body frame 2 (in front of the Glen tank 8 on the body frame 2). Further, an exhaust gas purification device 20 that purifies exhaust gas of the engine 11 is provided behind the engine 11 on the body frame 2. As shown in FIG. 3, a threshing device 6 is provided behind the engine 11 on the upper left side of the body frame 2, and a glen tank 8 is provided on the upper right side of the body frame 2 so as to face the threshing device 6.

  As shown in FIG. 3, the exhaust gas purification device 20 is provided behind the engine 11 on the body frame 2 and between the threshing device 6 and the glen tank 8. Further, as shown in the figure, the exhaust gas purification device 20 may be provided so that a part thereof is accommodated in a recess 8 a formed on a side surface (left side surface) of the grain tank 8 facing the threshing device 6. .

  As shown in FIGS. 4, 5, and 6, the exhaust gas purification device 20 is connected to an exhaust pipe 112 connected to an exhaust manifold 111 of the engine 11. The exhaust gas purification device 20 is disposed behind the engine 11 as described above. By disposing the exhaust gas purification device 20 behind the engine 11, the exhaust gas purification device 20 becomes less susceptible to vibrations from vibration sources such as the engine 11 and the traveling device 3.

  The exhaust gas purification device 20 performs purification by selective catalytic reduction using a DPF (Diesel Particulate Filter) 21 that removes particulate matter in the exhaust gas and urea water, that is, nitrogen in the exhaust gas after passing through the DPF 21. A urea SCR catalyst 22 which reacts ammonia generated by hydrolysis of urea water with oxide and converts it into harmless nitrogen is provided. Each of the DPF 21 and the urea SCR catalyst 22 is housed in a cylindrical case. In addition, the code | symbol in a figure is provided to each of these cases.

  The DPF 21 supports a catalyst (Pt) on a honeycomb carrier, oxidizes SOF and NOx components, and collects particulate matter by filtration. For example, the DPF 21 includes a honeycomb carrier and a plurality of partition walls. It is formed of a honeycomb cell structure having a plurality of through-holes having a square cross section and an outer wall surrounding the cell structure.

  The exhaust gas purification device 20 has a function of a DOC (Diesel Oxidation Catalyst) that efficiently oxidizes nitric oxide in the DPF 21, and the urea SCR catalyst 22 performs selective catalytic reduction using ammonia generated from urea water. It has a function.

In the DPF 21, the exhaust gas purification device 20 converts nitrogen monoxide in the exhaust gas into nitrogen dioxide, and injects urea water into the nitrogen dioxide in a pipe connecting the outlet of the DPF 21 and the inlet of the urea SCR catalyst 22. Nitrogen dioxide is converted into water and nitrogen gas to remove nitrogen oxide (NO _x ) in the exhaust gas. The purified exhaust gas flows through the exhaust pipe and is discharged to the outside.

  Here, another device provided as a peripheral device of the exhaust gas purification device 20 on the body frame 2 will be briefly described. On the machine body frame 2, as peripheral devices of the exhaust gas purification device 20, for example, a dosing module (hereinafter abbreviated as “DM”), a supply module (hereinafter abbreviated as “SM”), a urea water tank 23 (see FIG. 4).

  DM is a urea water injection unit of the urea SCR catalyst 22. For example, the DM is provided close to a pipe connecting the outlet of the DPF 21 and the inlet of the urea SCR catalyst 22. SM sends urea water to the urea SCR catalyst 22. The SM is preferably provided, for example, at a position away from the body frame 2 upward. The SM is preferably provided at a position away from the DPF 21 and the urea SCR catalyst 22 as well.

  Thus, by arranging the SM away from the body frame 2, it is possible to suppress the vibration from the vibration source being transmitted to the SM, and to suppress the breakage of the SM. Further, by arranging the SM apart from the DPF 21 and the urea SCR catalyst 22, the SM is less susceptible to the heat generated from the DPF 21 and the urea SCR catalyst 22.

  The urea water tank 23 stores urea water supplied to the urea SCR catalyst 22. The urea water tank 23 is preferably provided away from the engine 11. By disposing the urea water tank 23 away from the engine 11, the urea water tank 23 becomes less susceptible to the heat (exhaust heat) from the engine 11, and deterioration of the urea water can be suppressed.

  Further, the urea water tank 23 is preferably provided, for example, such that the urea water supply port 23 a faces the outside of the body frame 2. Since the water supply port 23a of the urea water tank 23 faces outward, the cap can be manually removed from the water supply port 23a to supply water from the carrying tank. That is, the water supply work to the urea water tank 23 can be facilitated.

  As shown in FIGS. 4 and 5, the DPF 21 and the urea SCR catalyst 22, which are the exhaust gas purifying device 20, have their cylindrical case shafts oriented sideways and each cylindrical case. Are arranged side by side along the front-rear direction. In this case, the DPF 21 is disposed below and the urea SCR catalyst 22 is disposed above. Further, the DPF 21 and the urea SCR catalyst 22 are connected by a connecting member 24.

  As shown in FIGS. 4 to 6, the connecting member 24 is provided on each of the left and right side surfaces of the DPF 21 and the urea SCR catalyst 22, and connects between the left and right side surfaces of the DPF 21 and the left and right side surfaces of the urea SCR catalyst 22. doing. Note that the connecting member 24 is, for example, a plate material made of aluminum die cast, and is thinned by forming a hole 24a. Thereby, weight reduction can be achieved.

  According to such a configuration, the exhaust gas purification device 20 is configured by the DPF 21 and the urea SCR catalyst 22, whereby the exhaust gas of the engine 11 can be effectively purified. Further, by arranging the DPF 21 and the urea SCR catalyst 22 vertically, the exhaust gas purification device 20 can be made compact on the machine body frame 2.

  Further, a support member 25 that fixes the upper part of at least one side surface (for example, the left side surface) of the left and right side surfaces of the urea SCR catalyst 22 is provided on the body frame 2. The support member 25 may be provided so that the left and right side surfaces of the urea SCR catalyst 22 are fixed and the urea SCR catalyst 22 is sandwiched between the two support members 25 and 25. The support member 25 is, for example, a metal long body having a cross-sectional shape in a cross-sectional line L (see FIG. 5) formed in a U-shape (also referred to as a C-shape).

  Both ends 25 a and 25 b of the support member 25 are fixed directly or indirectly to the body frame 2. Specifically, one end (front end) 25 a of both ends of the support member 25 is fixed via a fixing portion 10 a protruding rearward from the engine room 10 on the body frame 2. Of the both ends of the support member 25, the other end (rear end) 25 b is fixed to a mounting portion 45 a of a pitching cylinder 45, which will be described later, projecting upward from the body frame 2.

  In this manner, the support member 25 is indirectly fixed to the body frame 2 by fixing the both end portions 25 a and 25 b to the engine room 10 and the mounting portion 45 a of the pitching cylinder 45. The state in which the support member 25 is directly fixed to the body frame 2 refers to a state in which both end portions 25a and 25b are directly fixed to the body frame 2, respectively. In this case, it is preferable that the support member 25 has a gate shape in which, for example, a horizontal intermediate portion is provided between two legs extending upward.

  The support member 25 is supported by hanging the urea SCR catalyst 22 by being fixed to the upper part of the side surface of the urea SCR catalyst 22. Since the urea SCR catalyst 22 and the DPF 21 are connected up and down by a connecting member 24, the support member 25 supports the exhaust gas purification device 20 in a suspended manner.

  According to such a configuration, the upper portion of the urea SCR catalyst 22 that is a part of the exhaust gas purification device 20 is fixed and supported by suspending the urea SCR catalyst 22, thereby vibrating the urea SCR catalyst 22 (particularly the urea SCR catalyst). 22) can be suppressed. Thereby, the support rigidity of the urea SCR catalyst 22 is increased, and the support rigidity of the exhaust gas purification device 20 including the urea SCR catalyst 22 and the DPF 21 can be increased. Further, since the vibration of the upper portion of the urea SCR catalyst 22 is suppressed, the injection of urea water by DM becomes stable.

  Further, by fixing the both end portions 25 a and 25 b of the support member 25 to the body frame 2, the support member 25 and the body frame 2 can be substantially integrated. Thereby, the support rigidity of the urea SCR catalyst 22 is further increased, and the support rigidity of the exhaust gas purification device 20 including the urea SCR catalyst 22 and the DPF 21 can be further increased.

  Further, by fixing the both end portions 25a and 25b of the support member 25 to the engine room 10 and the mounting portion 45a of the pitching cylinder 45 which are firmly installed on the body frame 2 as compared with other portions, the support member 25 is fixed. And the body frame 2 can be substantially integrated, and the support member 25 can be arranged at a high position on the body frame 2. Thereby, the suspension support of the exhaust gas purification device 20 (urea SCR catalyst 22) can be performed.

  As shown in FIG. 5, the lower part of the exhaust gas purification device 20, that is, the lower part of the DPF 21 is fixed to the upper part of the body frame 2 via a fixing member 26. Since the DPF 21 which is a part of the exhaust gas purification device 20 is fixed to the upper part of the body frame 2 by the fixing member 26, the support rigidity of the exhaust gas purification device 20 (DPF 21) is increased. As described above, the exhaust gas purification device 20 is supported by being suspended by the support member 25 and is fixed to the upper portion of the body frame 2 by the fixing member 26, so that the exhaust gas purification device 20 is supported on the body frame 2. The rigidity can be further increased.

<Arrangement configuration of each part in engine room 10>
Next, the arrangement configuration of each part in the engine room 10 will be described with reference to FIGS. FIG. 7 is an explanatory front view showing the arrangement of each part in the engine room 10. FIG. 8 is a right side view for explanation showing the arrangement of each part in the engine room 10. FIG. 9 is an explanatory plan view showing the arrangement of each part in the engine room 10.

  As shown in FIGS. 7, 8, and 9, the radiator 12, the condenser 13, the oil cooler 14, and the intercooler 15 are disposed on the outer side of the body in the engine room 10 (the left side of the body or the cover 10 b side of the engine room 10). A reserve tank 16 and a fuel cooler 17 are accommodated. The radiator 12 cools the engine 11 (see FIG. 1) as described above by flowing antifreeze water such as ethylene glycol.

  The condenser 13 cools the air conditioner by flowing a chlorofluorocarbon refrigerant or the like. The oil cooler 14 cools the hydraulic oil of the hydraulic system. The intercooler 15 cools the intake air of the engine 11. The reserve tank 16 stores non-freezing water supplied to the radiator 12. The fuel cooler 17 cools the heat exchanger of the engine 11.

  Here, as shown in FIG. 8, the space S between the radiator 12 and the cover 10 b in the engine room 10 is vertically divided by the vertically dividing plate 30. Of the space S in the engine room 10, a condenser 13, an oil cooler 14, a reserve tank 16, and the like are disposed in the upper space S <b> 1. Of the space S in the engine room 10, an oil cooler 14, a fuel cooler 17, and the like are disposed in the lower space S <b> 2.

  Further, the space S in the engine room 10 is further divided into front and rear by a horizontal division plate 31. Among these, the reserve tank 16, the fuel cooler 17, etc. are arrange | positioned in front side space S11, S12. As shown in FIGS. 7 and 8, the reserve tank 16 and the fuel cooler 17 are attached to the horizontal division plate 31. Further, a condenser 13, an oil cooler 14, an intercooler 15 and the like are disposed in the rear spaces S21 and S22.

  According to such a configuration, the space S between the radiator 12 and the cover 10b in the engine room 10 can be effectively utilized by dividing the space S between the top and bottom and the front and back. In addition, the cooling effect is enhanced by arranging the condenser 13, the oil cooler 14, the intercooler 15, the reserve tank 16, the fuel cooler 17, and the like in the space S on the outer side of the machine body. Moreover, since the reserve tank 16 and the fuel cooler 17 are attached to the horizontal division plate 31, the number of parts for installing the reserve tank 16 and the fuel cooler 17 can be reduced.

  Moreover, it is preferable that the reserve tank 16 is arrange | positioned in the space (in this case front side space S11) used as the side near the water supply port 12a of the radiator 12. FIG. According to such an arrangement, the water supply port 12a of the radiator 12 and the reserve tank 16 are close to each other, so that the piping connecting them can be shortened, and maintenance is facilitated.

<Configuration of hydraulic valves 40 and 41>
Next, an arrangement configuration of the hydraulic valves 40 and 41 provided for each function will be described with reference to FIGS. FIG. 10 is an explanatory front view showing the arrangement of the hydraulic valve 40. FIG. 11 is an explanatory left side view showing the arrangement of the hydraulic valves 40 and 41. FIG. 12 is a plan view for explaining the arrangement of the hydraulic valves 40 and 41.

  The hydraulic valve 40 controls the amount of hydraulic oil supplied to drive and control at least a lifting cylinder that lifts and lowers the power steering and the reaping device 4 (see FIG. 1). As shown in FIGS. 10, 11, and 12, the hydraulic valve 40 is disposed above a transmission case 42 and a traveling HST (Hydro Static Transmission) 43 provided on the body frame 2. It is preferable to arrange in a space.

  According to such an arrangement, maintenance is facilitated by arranging the hydraulic valve 40 using the space above the mission case 42. Until now, the hydraulic valve 40 has been disposed in the space below the floor step 7a (see FIG. 19) of the cabin 7, but the urea water tank 23 (see FIG. 4), SM, etc. are located in the space below the floor step 7a. It came to be placed and was pressing space. By disposing the hydraulic valve 40 above the mission case 42, the space below the floor step 7a is arranged, and maintenance of the urea water tank 23 and the like is facilitated. Moreover, since the hydraulic valve 40 is close to the transmission case 42 and the cutting device 4 (the lifting cylinder of the cutting device 4), the pipes connected to these can be shortened.

  The hydraulic valve 41 controls the amount of hydraulic oil supplied to drive and control the rolling cylinder 44 and the pitching cylinder 45 that perform horizontal control (rolling control and pitching control) of the airframe (also referred to as “vehicle body”). As shown in FIGS. 11 and 12, a hydraulic valve (also referred to as “vehicle body horizontal valve”) 41 is provided above a transmission gear case 46 that transmits power to the grain discharge augers 9 a and 9 b provided on the body frame 2. Preferably they are arranged.

  According to such an arrangement, the distance between the hydraulic valve 41 and each cylinder (the rolling cylinder 44 and the pitching cylinder 45) is shorter than before, which has been arranged at the rear portion of the machine body frame 2, and the cylinders 44, 45 are arranged. The piping connected to can be shortened and the size can be reduced. Further, as shown in FIG. 12, since the hydraulic valve 41 is located near the right side of the machine body, it is easy for the operator to reach, for example, manual operation of the hydraulic valve 41 in an emergency can be easily performed.

<Arrangement Configuration of Compressor 50 for Driving Reversing Fan HST51>
Next, the arrangement of the compressor 50 for driving the reverse rotation fan HST 51 will be described with reference to FIGS. 13 and 14 are plan views for explaining the cabin open structure. FIG. 15 is a plan view for explaining the arrangement of the compressor 50. Here, the cabin open structure of the combine 1 will be briefly described. The combine 1 has a so-called cabin open structure in which a cabin 7 in which a cockpit 7b and various operation devices are provided is provided so as to be rotatable about an axis in the vertical direction toward the outside of the machine body.

  As shown in FIGS. 13 and 14, the cabin 7 has a closed position located in front of the Glen tank 8 (see FIG. 1), and a part or all of the cabin 7 protrudes outward (right outside) from the body frame 2. The link mechanism 60 is configured to be movable between the open positions. The link mechanism 60 includes, for example, an inner arm 61 and an outer arm 62. The base ends 61a and 62a of the inner arm 61 and the outer arm 62 are rotatably provided at arbitrary positions on the body frame 2 behind the engine 11 (see FIG. 1).

  Further, the distal end portions 61b and 62b of the inner arm 61 and the outer arm 62 are rotatably provided at positions ahead of the cockpit 7b. For this reason, the cabin is provided by the link mechanism 60 having four rotation fulcrums of the base end portions 61a and 62a of the inner arm 61 and the outer arm 62 and the distal end portions 61b and 62b of the inner arm 61 and the outer arm 62, respectively. 7 rotates. As a result, the cabin 7 is rotated to the rear of the engine 11 and the periphery of the engine 11 is opened, so that maintenance work and the like are facilitated.

  The compressor 50 that drives the reverse fan HST 51 from the drive unit is provided on the left side of the base end part 61 a and the front end part 61 b that serve as a pivot point of the inner arm 61 of the link mechanism 60 on the body frame 2. According to this arrangement configuration, the compressor 50 is disposed close to the reverse rotation fan HST 51 and behind the reverse rotation fan HST 51, so that the transmission configuration by the compressor 50 can be made compact. Further, since the compressor 50 is on the opposite side to the direction of rotation of the inner arm 61 when the cabin 7 is rotated, interference between the compressor 50 and the inner arm 61 can be prevented. Compatibility with the cabin open structure is possible.

<Detailed configuration of traveling device 3>
Next, a more detailed configuration of the traveling device 3 will be described with reference to FIGS. FIG. 16 is an explanatory left side view showing the traveling device 3. FIG. 16A shows the forward leaning posture of the traveling device 3, and FIG. 16B shows the backward leaning posture of the traveling device 3. As shown in FIG. 16, the traveling device 3 includes a pair of left and right track roller frames 70 disposed on the left and right below the body frame 2. A plurality of rolling wheels 71 are provided on the track roller frame 70 so as to abut on the ground contact surface of the crawler belt 3a from the inside.

  Further, the combine 1 (see FIG. 1) includes a rolling mechanism (including a rolling cylinder 44) that moves the traveling device 3 including the crawler mechanism up and down independently of the body frame 2, and a traveling device 3 including the crawler mechanism. And a pitching mechanism (including a pitching cylinder 45 and a pitching frame 45b connected to and driven by the pitching cylinder 45).

  As shown in FIG. 16, above the track roller frame 70, front and rear upper rollers (front wheels 72 and rear wheels 73) are provided. The front wheel 72 and the rear wheel 73 are each attached to the pitching frame 45b and support the upper part of the crawler belt 3a. Further, the rear wheel 73 is provided in front of the pitching frame 45b.

  According to such a configuration, variations in the method for adjusting the circumference of the crawler belt 3a increase. If the variation of the adjustment method of the circumference of the crawler belt 3a increases, the pitching amount by the pitching mechanism can be increased.

  FIG. 17 is an explanatory left side view showing a modified example (traveling device 3A) of the traveling device. FIG. 17A shows the forward tilting posture of the traveling device 3A, and FIG. 17B shows the backward tilting posture of the traveling device 3A. In addition, in the modification shown in FIG. 17, the same code | symbol is attached | subjected to the same or equivalent location as the above-mentioned traveling apparatus 3, and the description is abbreviate | omitted. As shown in FIG. 17, the front wheel 72 </ b> A and the rear wheel 73 </ b> A, which are upper wheels, are respectively connected to the rolling cylinder 44 and attached to a rolling arm 44 b that is driven by the rolling cylinder 44.

  Further, as shown in FIG. 17, the front side wheel 72A is formed to have a larger diameter than the rear side wheel 73A. That is, the magnitude relationship between the diameters α1 and α2 of the front and rear wheels 72A and 73A is α1> α2. In the past, there was a gap between the front wheel 72A and the crawler belt 3a, but according to such a configuration, the front wheel 72A is formed with a larger diameter than the rear wheel 73A. The crawler belt 3a can be supported from below by the front side wheel 72A and the rear side wheel 73A in all postures by pitching. As a result, flapping of the crawler belt 3a can be prevented, and interference between the crawler belt 3a and the body frame 2 can also be prevented.

  FIG. 18 is an explanatory front sectional view showing the structure of the rolling arm 44 b of the traveling device 3. FIG. 18 shows a partial cross section of the rolling arm 44b. As shown in FIG. 18, the traveling device 3 includes a vertical arm 44 c to which the rolling cylinder 44 is assembled and a lower arm 74 that connects the track roller frame 70. In the vertical frame 44c, the rolling cylinder 44 is assembled to the crawler belt 3a (see FIGS. 16 and 17) side of the fulcrum of the rolling arm 44b of the pitching frame 45b (see FIGS. 16 and 17).

  As shown in FIG. 18, the rolling arm 44 b is integrally formed with the lower arm 74. According to such a configuration, the rolling arm 44 b and the lower arm 74 are integrated, so that the thrust by the pitching cylinder 45 is directly transmitted to the track roller frame 70. For this reason, power transmission loss is reduced, and the power required for driving the pitching cylinder 45 can be reduced. Thereby, size reduction of the pitching cylinder 45 and simplification of the link structure for transmitting the motive power from the pitching cylinder 45 can be achieved.

  Further, since the rolling arm 44b and the lower arm 74 are integrated, the phase alignment of the splines at the time of assembling the vertical frame 44c and the lower arm 74 is not necessary, and assembly and adjustment are facilitated. Further, since there is no variation in the phase tolerance of the spline, the assembly accuracy is increased.

<Configuration of floor step 7a in cabin 7>
Next, the floor step 7a in the cabin 7 will be described with reference to FIGS. FIG. 19 is an explanatory front view showing the floor step 7 a in the cabin 7. FIG. 20 is a plan view for explaining the floor step 7 a in the cabin 7. In FIG. 19, the parking brake pedal 80 is shown expanded. The parking brake pedal 80 extends upward in the figure, but actually protrudes from the back to the front in the figure.

  As shown in FIGS. 19 and 20, a parking brake pedal 80 for stopping the airframe is provided on the left side on the floor step 7 a in the cabin 7. The parking brake pedal 80 is provided at the tip of a brake arm 81 that extends from the left side surface (hereinafter referred to as “left panel”) 85 of the floor step 7a so as to be rotatable in the vertical direction. The left panel 85 enters the left side of the aircraft on the floor step 7a. Therefore, a space (hereinafter referred to as “left space”) is formed on the floor step 7a. The parking brake pedal 80 and the brake arm 81 are disposed in the left space.

  According to such a configuration, the parking brake pedal 80 and the brake arm 81 are arranged in the left space formed by the left panel 85, so that the left side of the floor step 7a is retracted, and the width of the floor step 7a in the left-right direction is increased. It can be used effectively. Moreover, the habitability of the operator in the cabin 7 can be improved. In addition, for example, when the HST is electronically controlled, parts such as a rod and a link are not necessary, so that the left space can be used effectively. Further, by forming the brake arm 81 in a shape close to the left side, the left side space can be used more effectively.

  Further effects and modifications can be easily derived by those skilled in the art. Thus, the broader aspects of the present invention are not limited to the specific details and representative embodiments shown and described above. Accordingly, various modifications can be made without departing from the spirit or scope of the general inventive concept as defined by the appended claims and their equivalents.

DESCRIPTION OF SYMBOLS 1 Combine 2 Airframe frame 3 Traveling device 3a Crawler belt 3b Drive wheel 3c Tension wheel 4 Mowing device 4a Weeding shear 4b Pulling device 5 Grain feeding device 6 Threshing device 7 Control part (cabin)
7a Floor step 7b Pilot seat 8 Glen tank 8a Recess 9a Grain discharge auger (vertical auger)
9b Grain discharge auger (horizontal auger)
9c Exhaust cylinder 10 Engine room 10a Fixed part 11 Engine 111 Exhaust manifold 112 Exhaust pipe 12 Radiator 13 Condenser 14 Oil cooler 15 Intercooler 16 Reserve tank 17 Fuel cooler 20 Exhaust gas purification device 21 DPF
22 Urea SCR catalyst 23 Urea water tank 23a Water supply port 24 Connecting member 24a Hole 25 Support member 25a One end (front end)
25b The other end (rear end)
26 Fixed member 30 Vertical division plate 31 Horizontal division plate 40 Hydraulic valve 41 Hydraulic valve (vehicle body horizontal valve)
42 Transmission Case 44 Rolling Cylinder 45 Pitching Cylinder 45a Mounting Portion 46 Transmission Gear Case 50 Compressor 51 HST for Reverse Fan
60 Link Mechanism 61 Inner Arm 62 Outer Arm 70 Track Roller Frame 72 Upper Roller (Front Roller)
73 Upper wheel (rear wheel)
80 Parking brake pedal 81 Brake arm 85 Left side of floor step (left panel)

In order to solve the above-described problems and achieve the object, the present invention takes the following technical means.
According to a first aspect of the present invention, an engine is provided on the fuselage frame, an exhaust gas purification device for purifying exhaust gas of the engine is provided on the fuselage frame, and the rear of the engine, In a combine provided with a threshing device for threshing cereals on the upper left and right sides and a grain tank for storing threshed grains on the upper left and right other sides of the body frame, a part of the exhaust gas purification device is The urea SCR catalyst configured to reduce and purify the exhaust gas of the engine using ammonia generated from urea water is disposed behind the engine on the fuselage frame between the threshing device and the Glen tank. The urea SCR catalyst is fixed by fixing at least one of the left and right side surfaces of the urea SCR catalyst facing the outside of the fuselage. Ri support supporting member is provided down, out of both end portions of the support member, whereas the end portion is fixed to the outer wall of the engine room that accommodates the engine on the machine frame, the other end portion of said support member A traveling device that protrudes upward from the body frame and is provided below the body frame is a combine fixed to a mounting portion of a pitching cylinder that performs pitching driving .

According to a second aspect of the present invention, the exhaust gas purifying device includes a DPF that removes particulate matter in the exhaust gas, the DPF is disposed below, and the urea SCR catalyst is disposed upward, so that the DPF The combine according to claim 1, wherein the left and right side surfaces and the left and right side surfaces of the urea SCR catalyst are connected by a connecting member.

According to the first aspect of the present invention, the urea SCR catalyst is suspended and supported by fixing the upper part of the urea SCR catalyst that is a part of the exhaust gas purifying device, so that the vibration of the urea SCR catalyst (particularly the urea SCR) is supported. Vibration of the upper part of the catalyst) can be suppressed. As a result, the support rigidity of the urea SCR catalyst is increased, and the support rigidity of the exhaust gas purification device including the urea SCR catalyst can be increased. Further, the support member and the fuselage frame are substantially integrated by fixing both ends of the support member to the engine room and the mounting portion of the pitching cylinder that are firmly installed on the fuselage frame compared to other parts. And the support member can be arranged at a high position on the fuselage frame. Thereby, the suspension support of the exhaust gas purification device (urea SCR catalyst) can be performed.

According to the invention described in claim 2 , in addition to the effect of the invention described in claim 1 , the exhaust gas purification device is configured by the DPF and the urea SCR catalyst, thereby effectively purifying the exhaust gas of the engine. be able to. Further, by arranging the DPF and the urea SCR catalyst vertically, the exhaust gas purification device can be made compact on the body frame.

Claims (4)

An engine is provided on the fuselage frame, an exhaust gas purification device for purifying the exhaust gas of the engine is provided on the fuselage frame, and the cereals are threshed on the left and right sides of the upper part of the fuselage frame at the rear of the engine In the combine provided with a grain tank for storing the threshed grain on the upper left and right other sides of the body frame,
A urea SCR catalyst that constitutes a part of the exhaust gas purification device and reduces and purifies the exhaust gas of the engine using ammonia generated from urea water is disposed behind the engine on the fuselage frame. Provided between the threshing device and the Glen tank,
A combine comprising a support member for supporting at least one of the left and right side surfaces of the urea SCR catalyst facing the outer side of the urea SCR catalyst so as to suspend and support the urea SCR catalyst.   The combine according to claim 1, wherein the support member has a long body shape, and both end portions of the support member are fixed directly or indirectly to the body frame.   One end of the both ends of the support member is fixed to the outer wall of the engine room housing the engine on the body frame, and the other end of the support member projects upward from the body frame. The combine according to claim 1 or 2, wherein a traveling device provided below the machine body frame is fixed to a mounting portion of a pitching cylinder for driving the pitching.   The exhaust gas purification device includes a DPF that removes particulate matter in the exhaust gas, the DPF is disposed below and the urea SCR catalyst is disposed above, and left and right side surfaces of the DPF and the urea SCR catalyst The combine according to any one of claims 1 to 3, wherein the left and right side surfaces are connected by a connecting member.