JP2020074777A - Combine-harvester - Google Patents

Abstract

To provide a combine-harvester capable of diminishing a space in which an oxidation catalyst and an SCR catalyst are disposed by integrating the oxidation catalyst and the SCR catalyst compactly.SOLUTION: A second support member for supporting an SCR catalyst 22 and extending in the longitudinal direction is provided on the lower side of the SCR catalyst. In plane view, a first support member 52 is so formed that a rear part of the first support member is provided at a rearward left side of the front part of the first support member at a prescribed inclination angle with respect to a virtual line extending in the longitudinal direction. The bottom of the first support member is fixed to a front-side left part on the upper face of the second support member to form an opening part 53 on the bottom of the first support member, and the front-side left part in the SCR catalyst is made to enter in the opening part.SELECTED DRAWING: Figure 6

Description

  The present invention relates to a combine equipped with an exhaust purification device.

  In a conventional combine, an exhaust purification device including an oxidation catalyst having a catalyst for oxidizing unburned gas in exhaust gas burned in an engine and an SCR catalyst for purifying nitrogen oxides in the exhaust gas after passing through the oxidation catalyst. There is known a technique for providing the. (Patent Document 1)

JP, 2017-38578, A

  However, in the technique of Patent Document 1, the oxidation catalyst is provided on the upper side of the engine in a posture in which the exhaust gas flow direction is along the front-rear direction, and the SCR catalyst is in the posture of the Glen tank in a posture in which the exhaust gas flow direction is along the vertical direction. Since it is provided on the lower side of the bottom wall, there is a problem in that a large space must be secured for disposing the oxidation catalyst and the SCR catalyst.

  Further, there is a problem that the work of attaching the oxidation catalyst and the SCR catalyst increases, and the work of arranging the connecting pipe connecting the oxidation catalyst and the SCR catalyst also increases.

  Therefore, a main object of the present invention is to provide a combine in which the oxidation catalyst and the SCR catalyst are compactly integrated and the space where the oxidation catalyst and the SCR catalyst are arranged can be reduced.

  MEANS TO SOLVE THE PROBLEM This invention which solved the said subject is as follows.

That is, in the invention according to claim 1, a threshing device (4) for threshing a grain culm is provided on the upper surface of a body frame (1) equipped with an engine (E), and threshing is performed on the right side of the threshing device (4). In a combine equipped with a grain tank (7) for storing grains,
An exhaust purification device (20) for purifying exhaust gas of the engine (E) is provided, and the exhaust purification device (20) oxidizes an unburned gas in the exhaust gas discharged from the engine (E). (21) and an SCR catalyst (22) for reducing and purifying nitrogen oxides in the exhaust gas after passing through the oxidation catalyst (21) with ammonia generated from urea water, and the threshing device (4) and the grain The oxidation catalyst (21) is provided between the tanks (7) in a posture in which the exhaust gas flow direction is along the vertical direction, and the SCR catalyst (22) is in a posture in which the exhaust gas flow direction is along the front-back direction. Provided on the right side of the oxidation catalyst (21) is a first support member (52) extending in the vertical direction for supporting the oxidation catalyst (21), and below the SCR catalyst (22), the SCR. A second support member (51) that extends in the front-rear direction that supports the catalyst (22) is provided, and in a plan view, the first support member (52) has a predetermined inclination with respect to an imaginary line that extends in the front-rear direction. The rear portion of the first support member (52) is provided at an angle rearward of the front portion of the first support member (52) at an angle, and the lower portion of the first support member (52) is disposed at the second support member. It is fixed to the front left part of the upper surface of (51), an opening (53) is formed in the lower part of the first support member (52), and the front left part of the SCR catalyst (22) is connected to the opening (53). ) Is a combine characterized by having been invaded.

  The invention according to claim 2 is such that, in a side view of the airframe, the lower end portion of the oxidation catalyst (21) is provided close to the central portion of the front portion of the SCR catalyst (22) in the vertical direction. It is a combine.

  According to a third aspect of the present invention, a first cover support member (55) standing upright toward the upper left side is provided on the front right part of the upper surface of the second support member (51), and the second support member (51) is provided. ), A second cover support member (56) standing upright toward the upper left is provided on the rear right part of the upper surface of the above), and the first cover support member (55) and the second cover support member (56) are shielded from heat. The combine according to claim 1 or 2, wherein a cover (57) is installed.

  The invention according to claim 4 is the combine according to claim 3, wherein an upper portion of the first cover supporting member (55) is connected to an upper portion of the first supporting member (52).

  A fifth aspect of the present invention is any one of the first to fourth aspects, in which the oxidation catalyst (21) and the SCR catalyst (22) are made to face a bottom wall of the Glen tank (7) that is formed in a downward slope. The combine according to item 1.

  According to the invention described in claim 1, the oxidation catalyst (21) and the SCR catalyst (22) can be compactly integrated, and the space where the oxidation catalyst (21) and the SCR catalyst (22) are installed can be reduced. Further, the oxidation catalyst (21) and the SCR catalyst (22) can be easily assembled between the threshing device (4) and the Glen tank (7), and the oxidation catalyst (21) and the SCR catalyst (22) are connected. It is also possible to easily carry out the work of arranging connecting pipes and the like.

  According to the second aspect of the invention, in addition to the effect of the first aspect of the invention, the space where the oxidation catalyst (21) and the SCR catalyst (22) are installed can be made smaller.

  According to the invention of claim 3, in addition to the effect of the invention of claim 1 or 2, when the maintenance work of the threshing device (4) and the like is performed with the Glen tank (7) in an open state, a worker Can be prevented from coming into contact with the oxidation catalyst (21) and suffering burns or the like.

  According to the invention of claim 4, in addition to the effect of the invention of claim 3, the rigidity of the first supporting member (52) can be increased, and the deformation of the first supporting member (52) can be prevented. ..

  According to the invention of claim 5, in addition to the effect of the invention of any one of claims 1 to 4, straw debris is accumulated on the oxidation catalyst (21) and the SCR catalyst (22), and rainwater is accumulated. It is possible to suppress direct sunlight, high pressure water during car wash, and direct contact.

It is a left side view of a combine. It is a right view of a combine. It is a right side view explaining the arrangement position of the purification device. It is a top view explaining the arrangement position of a purification device. It is a top view of a purification device. It is a left side view of a purification device. It is a right side view of a purification device. It is a front view of a purification device. It is a rear view of a purification device. It is a rear view explaining the urea water tank of a purification device. It is a top view explaining the urea water tank of a purification device. It is a right side view explaining the urea water tank of a purification device. (A) of the protective cover of the fuel tank is a left side view and (b) is a plan view.

  As shown in FIGS. 1 and 2, the combine is provided with a traveling device 2 composed of a pair of left and right crawlers traveling on a soil surface below the machine body frame 1, and at the front side of the machine body frame 1 to harvest the grain culm in the field. A mowing device 3 is provided, a threshing device 4 for threshing / selecting the mowing culms is provided on the rear left side of the mowing device 3, and a control unit 5 on which a pilot is boarded is provided on the rear right side of the mowing device 3. ing.

  An engine room 6 in which the engine E is mounted is provided below the control unit 5, and a grain tank 7 that stores the grains that have undergone threshing / sorting processing is provided at the rear side of the control unit 5. A discharge auger 8 is provided on the rear side. The discharge auger 8A includes a fried grain portion 8A extending in the vertical direction for discharging grains to the outside and a horizontal discharge portion 8B extending in the front-rear direction.

  As shown in FIGS. 3 and 4, the lower part of the right wall of the threshing device 4 and the upper part of the left wall of the grain tank 7 are the first lifts for transporting the grains threshed and sorted by the threshing device 4 to the grain tank 7. They are communicated with each other by a grain tube 9. Further, on the rear side of the first fried grain barrel 9, a second fried grain barrel 10 for returning the second product such as the branch shoot attached grains to the threshing device 4 is provided.

  The exhaust gas burned by the engine E is exhausted to the outside after the impurities in the exhaust gas are purified by the exhaust purification device 20. The exhaust gas purification device 20 includes a DOC (“oxidation catalyst” in the claims) 21 that oxidizes harmful components in exhaust gas with a catalyst, and a nitrogen oxide substance in the exhaust gas exhausted from the DOC 21 with an aqueous urea solution (hereinafter, urea water). SCR (“SCR oxidation” in the claims) 22 that reduces and purifies with ammonia generated from the above. Further, in the present embodiment, a dosing module 23 that injects urea water to the SCR 22, a supply module 24 that pressure-feeds urea water to the dosing module 23, and a urea water tank 25 that stores urea water that is supplied to the supply module 24 are provided. Has been.

  As shown in FIGS. 5 to 9, the DOC 21 having the exhaust gas flowing in the vertical direction and the SCR 22 having the exhaust gas flowing in the front-rear direction are fixed to the support member 50. The support member 50 includes a horizontal support member (a “second support member” in the claims) 51 that has a predetermined width in the left-right direction and that is detachably fixed to the machine body frame 1 and extends in the front-rear direction. The vertical support member 52 has a predetermined width and extends in the vertical direction.

  The DOC 21 is fixed to the left surface of the vertical support member (“first support member” in the claims) 52 with a pair of upper and lower metal bands 21A, and the SCR 22 is fixed to the upper surface of the horizontal support member 51 with a pair of front and rear metal bands 22A. ing.

  The lower portion of the vertical support member 52 is fixed to the front left portion of the horizontal support member 51. In a plan view, the vertical support member 52 is fixed so as to incline to the left as it goes from the front portion to the rear portion of the vertical support member 52, and in the present embodiment, an angle on an acute angle side that intersects an imaginary line extending in the front-rear direction. Is set to 30 degrees. Further, in a front view of the machine body, a slot-like opening 53 having a long axis in the up-down direction is formed in a portion of the vertical support member 52 facing the left portion of the SCR 22. As a result, the front left part of the SCR 22 can be caused to enter the opening 53, and the DOC 21 and the SCR 22 can be fixed to the support member 50 in close proximity, that is, by suppressing an excess space.

  In the present embodiment, the lower portion of the DOC 21 is provided at the center of the opening 53 in the vertical direction, and the center of the SCR 22 in the vertical direction is located at the center of the opening 53 in the vertical direction in a side view of the machine body. It is provided. As a result, the DOC 21 and the SCR 22 can be fixed closer to the support member 50 in a more compact manner by suppressing an excess space. Further, a fuel hose 67 for transferring the fuel to be supplied to the engine E is arranged in the space formed below the DOC 21. Thereby, the space formed under the DOC 21 can be utilized actively.

  The exhaust port of the engine E and the intake port formed in the lower portion of the DOC 21 are connected by a flexible connecting pipe 11. In plan view, the connecting pipe 11 extends leftward from the exhaust port of the engine E, then curves rearward, and extends rearward above the flywheel of the engine E. After that, it curves toward the right side and extends toward the right side to reach the intake port of the DOC 21. Further, when viewed from the side of the machine body, the connecting pipe 11 extends from the exhaust port of the engine E to the rear side above the flywheel of the engine E, and then extends rearward to reach the intake port of the DOC 21. ..

  The exhaust port formed in the upper part of the DOC 21 and the intake port formed in the rear part of the SCR 22 are connected by a non-flexible connecting pipe 12, and a dosing module 23 is provided at a portion upstream of the connecting pipe 12. ing. An exhaust pipe 13 that guides exhaust gas to the outside is connected to an exhaust port formed in the front portion of the SCR 22.

  In a side view of the machine body, the horizontal support member 51 has a first cover support member 55 located on the front side and a rear side that is detachably fixed to a heat shield cover 57 that covers the right part of the SCR 22 and the right part of the exhaust pipe 13. A second cover support member 56 is provided. As a result, it is possible to prevent an operator who performs maintenance work on the threshing device 4 with the Glen tank 7 in an open state from contacting the high temperature SCR 22 and suffering a burn or the like.

  The lower part of the first cover support member 55 is fixed to the front right part of the horizontal support member 51, and the upper part of the first cover support member 55 is fixed to the upper part of the vertical support member 52. As a result, the rigidity of the vertical support member 52 is increased, and the deformation of the vertical support member 52 can be further prevented. Further, the first cover support member 55 is formed in a substantially dogleg shape when viewed from the front of the machine body.

  The lower part of the second cover support member 56 is fixed to the rear right part of the horizontal support member 51, and the upper part of the second cover support member 56 is located on the rear side of the upper part of the exhaust pipe 13. Further, the second cover support member 56 is formed in a substantially V shape when viewed from the front of the machine body.

  In a side view of the machine body, the DOC 21 and the SCR 22 are provided between the front wall of the grain tank 7 and the first fried grain cylinder 9. Further, in plan view, the DOC 21 and the SCR 22 are provided so as to face the lower side of the bottom wall of the Glen tank 7 which is formed in a downward slope, that is, the recess formed in the bottom wall. As a result, it is possible to prevent the DOC 21 and the SCR 22 from being directly hit by rainwater, direct sunlight, or high-pressure water during car wash.

  The water supply port of the dosing module 23 and the water supply port of the supply module 24 are connected by a flexible connection pipe 14. Further, a connection pipe 15 for transferring the cooling water heated by the engine E to the radiator is provided close to the connection pipe 14. This can prevent the urea water transferred through the connecting pipe 14 from freezing. The front portion of the connecting pipe 15 is routed in a space formed above the DOC 21, and the rear portion of the connecting pipe 15 is provided along a support member 18 provided above the supply module 24 and extending in the front-rear direction. Have been planned.

  When viewed from the side of the machine, the supply module 24 is provided near the lower side portion of the second fried food container 10. As a result, the first fried food container 9 can be bypassed and the connecting pipe 14 can be easily arranged on the right side of the first fried food container 9.

  When seen in a plan view, the supply module 24 is provided so as to face the lower side of the bottom wall of the Glen tank 7 that is formed in a downward slope to the right. In addition, an opening 71 is formed in a plate-shaped frame 70 that is provided so as to bridge the machine body frame 1 that is adjacent to the supply module 24 in the left-right direction. As a result, it is possible to prevent rainwater, direct sunlight, and high-pressure water during car washing from directly hitting the supply module 24, and the urea water remaining in the supply module 24 can be easily discharged to the outside. It should be noted that normally, the opening of the frame 70 is covered with a detachable cover 72.

  The support member 75 that supports the supply module 24, the fuel filter 64 that removes foreign matters in the fuel stored in the fuel tank 60, and the support member 66 that supports the fuel pump 65 that transfers the fuel to the engine E are the fuselage claim 1 It is fixed to a fixing member 76 made of round steel.

  The fixing member 76 extends from the upper surface of the machine body frame 1 toward the upper right side, and then curves rearward and extends rearward. As a result, in a plan view, the supply module 24 can be provided on the right side of the machine body frame 1 to which the fixing member 76 is fixed and can be arranged above the opening 71 in the frame 70.

  The water supply port of the supply module 24 and the water supply port of the urea water tank 25 are connected by a flexible connection pipe 16. An opening / closing valve is provided in an internal pipe between the water supply port and the water supply port of the supply module 24, and a harness 17 for operating the opening / closing valve is connected to the opening / closing valve. Thus, when the urea water stored in the urea water tank 25 becomes lower or higher than the predetermined temperature, the opening / closing valve is closed to stop the supply of the urea water from the urea water tank 25 to the supply module 24. be able to.

When viewed from the side of the machine, the cleaning opening 9A formed in the lower portion of the first fried food container 9 is disposed between the SCR 22 and the supply module 24, and the cleaning opening 10A formed in the lower portion of the second fried food container 10.
Are arranged between the supply module 24 and the fuel pump 65. As a result, the grain tank 7 can be opened to easily remove straw and the like accumulated in the first fried food container 9 and the second fried food container 10.

As shown in FIGS. 10 to 12, the urea water tank 25 is provided on the right side of the fried grain portion 8A, that is, outside the machine body, with the longitudinal direction along the front-rear direction. When viewed from the side of the machine, the front portion of the urea water tank 25 is disposed on the rear side of the rear wall of the Glen tank 7, and the rear portion of the urea water tank 25 is a support frame that supports the fried portion 8A so as to be vertically rotatable. It is provided at a position overlapping 40.
In addition, a water supply port 25 </ b> A is provided so as to project obliquely rearward and upward on an inclined wall that is formed on the upper rear side of the urea water tank 25 and that is inclined rearward and downward. As a result, the water supply port 25A is arranged rearward of the fried grain portion 8A toward the rear of the machine body, and the urea water can be easily replenished from the water supply port 25A of the urea water tank 25. Further, the urea water tank 25 is provided between the right wall of the Glen tank 7 and the fried grain portion 8A in the rear view of the machine body. This makes it possible to effectively utilize the space formed behind the rear wall of the Glen tank 7.

A sensor 25B for measuring the temperature of the urea water is provided on the upper wall of the urea water tank 25, and a sensor 25C for measuring the concentration of the urea water is provided in a recess formed in the front part of the bottom wall of the urea water tank 25.
Is provided.

  The urea water tank 25 is placed on the upper surface of a plate-shaped support table 30. A support member 31 is supported on the front right portion of the support base 30. The support member 31 is formed of a first extending portion extending upward from the support base 30 and a second extending portion curving at an upper portion of the first extending portion and extending rearward. There is. This prevents the urea tank 25 from dropping from the support base 30, and when removing the urea tank 25 from the support base 30, the support member 31 is removed from the support base 30 and the urea tank 25 is easily removed. be able to.

  At the rear part of the second extending portion of the supporting member 31, there is provided a fixing member 32 extending in the up-down direction with a predetermined space in the left-right direction. An opening is formed in the fixing member 32 for inserting a plate-shaped support stand 33 on which a container such as a vinyl bag or a box containing the vinyl bag in which the urea water for replenishment is stored is inserted when the urea water is replenished. Has been done. Further, in the present embodiment, the support base 33 is housed between the urea tank 25 and the support member 31 when the urea water is not replenished. Thus, the support base 33 can be quickly attached to the back surface of the fixing member 32 when replenishing the urea water.

  The support base 30 is supported by a rotating frame 36 via two leg portions 35 provided at a predetermined interval in the front-rear direction. The rotating frame 36 is provided below the support frame 40 so that it can be connected and disconnected. Further, the rotating frame 36 extends rightward from the position where it is connected to the lower portion of the support frame 40, and then extends frontward to form the upper and lower portions formed on the rear right portion of the machine body frame 1. It is rotatably supported by a support shaft 37 extending in the direction. The left portion of the fixing member 32 is also provided at the intermediate portion of the support frame 40 via the connecting member 34 so as to be connectable and disconnectable. Accordingly, the rotating frame 36 can be rotated around the support shaft 37, and the urea water tank 25 can be rotated together with the support base 30 supported by the rotating frame 36 toward the outside of the machine body. The work of attaching / detaching 8A and the maintenance of the urea water tank 25 can be easily performed.

  The upper portion of the support frame 40 extends toward the front side and rotatably supports the upper portion of the fried grain portion 8A via the rotation support member 41. The lower portion of the support frame 40 extends toward the front side and is connected to the rear portion of the machine body frame 1.

  The conveying spiral provided at the bottom of the Glen tank 7 and the lower part of the fried portion 8A are connected via an auger metal 45. In this embodiment, the lower front side of the auger metal 45 is fixed to the rear end of the machine body frame 1. That is, the auger metal 45 extends rearward from the rear end portion of the machine body frame 1, and the machine body frame 1 is not provided below the auger metal 45. As a result, the storage capacity of the Glen tank 7 can be increased. A cleaning port 45A is formed in the lower part of the auger metal 45. This makes it possible to easily remove straw and the like accumulated in the fried grain portion 8A and the auger metal 45.

  Between the rear wall of the Glen tank 7 and the fried portion 8A, the connection pipe 16 and the harness 17 connected to the upper side of the auger metal 45 and connected to the supply module 24 and the urea water tank 25, and the horizontal discharge portion 8B. A hydraulic hose (not shown) that supplies oil to a lifting cylinder that lifts and lowers the front portion is provided. As a result, the space formed above the auger metal 45 can be effectively used.

  As shown in FIG. 13, a protective cover 61 formed by bending an iron plate is provided at the lower portion of the fuel tank 60 provided on the left rear side of the machine body frame 1. As a result, it is possible to prevent the fuel tank 60 from being damaged by a collision such as a ridge.

  The protective cover 61 is formed of a front wall, a rear wall, a bottom wall, and left and right side walls, and an openable / closable door 62 is provided on the bottom wall. As a result, dust such as straw dust accumulated in the protective cover 61 can be easily discharged to the outside.

1 Airframe frame 4 Threshing device 7 Glen tank 20 Exhaust gas purification device 21 DOC (oxidation catalyst)
22 SCR (SCR catalyst)
51 Horizontal Support Member (Second Support Member)
52 Vertical Support Member (First Support Member)
53 Opening 55 First Cover Support Member 56 Second Cover Support Member 57 Thermal Barrier Cover E Engine

Claims (5)

A threshing device (4) for threshing culms is provided on the upper surface of a machine frame (1) equipped with an engine (E), and a grain tank (7) for storing threshed grains is provided on the right side of the threshing device (4). In the combine with
An exhaust gas purification device (20) for purifying exhaust gas of the engine (E) is provided,
The exhaust purification device (20) includes an oxidation catalyst (21) for oxidizing unburned gas in the exhaust gas discharged from the engine (E), and a nitrogen oxidation in the exhaust gas after passing through the oxidation catalyst (21). Equipped with an SCR catalyst (22) for reducing and purifying substances with ammonia generated from urea water,
The oxidation catalyst (21) is provided between the threshing device (4) and the Glen tank (7) in a posture in which the exhaust gas flow direction is vertically aligned, and the SCR catalyst (22) is provided in the exhaust gas flow direction. Provided in a posture that follows the front-back direction,
On the right side of the oxidation catalyst (21), a first support member (52) that extends in the up-down direction and supports the oxidation catalyst (21) is provided,
Provided below the SCR catalyst (22) is a second support member (51) extending in the front-rear direction that supports the SCR catalyst (22),
When seen in a plan view, the rear portion of the first support member (52) is provided with the first support member (52) at a predetermined inclination angle with respect to an imaginary line extending in the front-rear direction. Provided on the left side behind the front part of
The lower portion of the first support member (52) is fixed to the front left portion of the upper surface of the second support member (51),
Forming an opening (53) in a lower portion of the first support member (52),
The combine characterized in that the front left part of the SCR catalyst (22) is inserted into the opening (53).   The combine harvester according to claim 1, wherein a lower end portion of the oxidation catalyst (21) is provided close to a vertical center portion of a front portion of the SCR catalyst (22) in a side view of the airframe. A first cover support member (55) standing upright to the upper left is provided on the front right part on the upper surface of the second support member (51), and a rear right part on the upper surface of the second support member (51). A second cover support member (56) standing upright to the left,
The combine according to claim 1 or 2, wherein a heat shield cover (57) is provided over the first cover support member (55) and the second cover support member (56).   The combine according to claim 3, wherein an upper portion of the first cover support member (55) is connected to an upper portion of the first support member (52).   The combine according to any one of claims 1 to 4, wherein the oxidation catalyst (21) and the SCR catalyst (22) are made to face a bottom wall of the Glen tank (7) that is formed in a downward slope.

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