JP2018068183A - combine - Google Patents

Abstract

PROBLEM TO BE SOLVED: To suppress reduction of exhaust emission purification action in an exhaust emission purification device by reducing distance between an engine and the exhaust emission purification device, suppress reduction of storage capacity of a grain tank, and facilitate supply of urea water to a urea water tank.SOLUTION: An exhaust emission purification device purifying exhaust emissions of an engine E is arranged in a portion between a threshing device and a grain tank. The exhaust emission purification device comprises a DPF 21 eliminating particle substances in the exhaust emissions and an SCR 22 purifying nitrogen oxide substances in the exhaust emissions by reducing the nitrogen oxide substances with ammonia generating from urea water. Longitudinal directions of the DPF and SCR face a machine body front/rear direction. The SCR is arranged side by side on a right side of the DPF. A recess 30 opening on front and left sides is formed in a portion on a front side with respect to a grain-lifting cylinder 18 in a left wall of a grain tank. The SCR enters into the recess. A urea water tank storing urea water to be supplied to the SCR is arranged in a lower part of a step part of an operation part. A water supply port of the urea water tank is arranged in a right lower part right side face of the step part.SELECTED DRAWING: Figure 6

Description

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

  In a conventional combine, a notch (recess) is formed in the upper left wall of the grain tank facing the upper right wall of the threshing device, and the exhaust gas purification device consisting of DPF and SCR that purifies the exhaust gas of the engine is cut. A technique is known in which a urea water tank that is disposed in a notch and stores urea water to be supplied to an exhaust purification device is disposed on the rear side of the engine. (Patent Document 1)

  In addition, a technology is known in which an exhaust purification device is disposed in a lower portion of a space formed between a threshing device and a glen tank, and a urea water tank is disposed below a step of a control unit. (Patent Document 2)

JP 2016-1558591 A Japanese Patent Laid-Open No. 2015-7397

  However, when the exhaust purification device is arranged in the notch in the upper left wall of the Glen tank as in the technique of Patent Document 1, the distance from the engine mounted on the fuselage frame becomes longer, and the exhaust head of the engine There is a problem that the temperature of the exhaust gas that has come out decreases until reaching the exhaust purification device, the activity of the catalyst in the exhaust purification device decreases, and the exhaust purification action decreases. Moreover, urea water cannot be easily supplied to the urea water tank.

  Moreover, in the technique of Patent Document 2, the exhaust pipe connected to the exhaust port of the exhaust gas purification apparatus is extended to the upper side of the Glen tank, so that there is a problem that the structure for fixing the exhaust pipe becomes complicated.

  Therefore, the main problem of the present invention is that the distance between the engine and the exhaust purification device is shortened to reduce the exhaust purification effect in the exhaust purification device, and the decrease in the storage capacity of the Glen tank is suppressed, An object of the present invention is to provide a combine that can easily supply urea water to a tank.

The present invention that has solved the above problems is as follows.
That is, the invention described in claim 1 is provided with a reaping device (3) for cutting cereals on the front side of the body frame (1), and threshing the cereals harvested on the rear left side of the reaping device (3). A threshing device (4) is provided, and a control unit (5) on which a driver rides is provided on the rear right side of the reaping device (3), and the threshing-sorted grains are arranged on the rear side of the control unit (5). A grain tank (7) for storing grains is provided, and the milling cylinder (18) for conveying the grain extends from the lower part of the right wall (4B) of the threshing device (4) to the upper part of the left wall (7A) of the grain tank (7). In the combine with
An exhaust purification device (20) for purifying the exhaust gas of the engine (E) is provided in a portion between the threshing device (4) and the Glen tank (7), and the exhaust purification device (20) The DPF (21) for removing particulate matter and the SCR (22) for reducing and purifying nitrogen oxides in the exhaust gas with ammonia generated from urea water, Each longitudinal direction is directed to the longitudinal direction of the machine body, the SCR (22) is juxtaposed on the right side of the DPF (21), and the front side of the milling cylinder (18) on the left wall (7A) of the Glen tank (7) A concave portion (30) having an open front side and a left side is formed in a portion of the above, and the urea water tank for storing the urea water to be supplied to the SCR (22) by allowing the SCR (22) to enter the concave portion (30) (28) is inserted into the steering part (5). Provided under the-up portion (5A), a combine, characterized in that disposed water inlet of the urine Motomi tank (28) and (29A) to the lower right right side surface of the step portion (5A).

  Invention of Claim 2 is a combine of Claim 1 which has arrange | positioned the said DPF (21) and SCR (22) in the position lower than the upper wall (4E) of a threshing device (4) by the body front view. .

  The invention according to claim 3 is the first wall (32) extending from the upper left side of the left wall (7A) of the Glen tank (7) toward the lower right side, and the first wall. A second wall (33) extending downward from the lower end of (32) and a third wall (34) extending downward from the lower end of the second wall (33) to the left; The combine according to claim 1 or 2, wherein the second wall (33) is arranged so as to be biased to the right side of the transport spiral (36) of the Glen tank (7) in a front view.

  According to a fourth aspect of the present invention, the first wall (32) is formed to be inclined 45 degrees downward to the right with respect to the upper surface of the body frame (1), and the third wall (34) is formed to the body frame (1). The combine according to claim 3, wherein the combine is formed to be inclined 30 degrees downward to the left with respect to the upper surface.

  The invention according to claim 5 is characterized in that the Glen tank (7) is provided so as to be rotatable in the vertical direction toward the outer side of the machine body, toward the upper right side of the threshing device (4) toward the upper side of the exhaust gas purification device (20). An extending stay (45) is provided, and a pin (46) extending in the front-rear direction is provided on the upper portion of the stay (45), and the left wall (7A) or the front wall (7C) of the Glen tank (7) is provided. The hook (51) engaged with the said pin (46) is provided in the upper part, The said stay (45) and the cereal grain (18) were connected with the reinforcement member (47) extended in the front-back direction. 4. The combine according to any one of 4 above.

  According to invention of Claim 1, the exhaust gas purification apparatus (20) which purifies the exhaust gas of an engine (E) is provided in the site | part between a threshing apparatus (4) and a Glen tank (7), and an exhaust gas purification apparatus ( 20) includes a DPF (21) that removes particulate matter in the exhaust gas and an SCR (22) that reduces and purifies the nitrogen oxides in the exhaust gas with ammonia generated from urea water. ) And SCR (22) are oriented in the longitudinal direction of the fuselage, and the SCR (22) is juxtaposed on the right side of the DPF (21). 18), a recess (30) whose front and left sides are open is formed in the front part, and the SCR (22) is inserted into the recess (30), and urea water supplied to the SCR (22) is stored. Connect the urea water tank (28) to the step of the control section (5). Since the water supply port (29A) of the urea water tank (28) is disposed on the right side surface of the lower right part of the step part (5A), it is provided at the lower part of the part (5A). The distance becomes relatively short, the exhaust purification effect of the exhaust purification device (20) can be reduced, and the reduction of the storage capacity of the Glen tank (7) is suppressed, and the cutting and threshing operation is continuously performed. Can do. Further, urea water can be easily supplied to the urea water tank (28).

  According to invention of Claim 2, in addition to the effect by invention of Claim 1, it is DPF (21) and SCR (22) more than the upper wall (4E) of a threshing device (4) by the body front view. Since it is arranged at a low position, the atmosphere temperature of the DPF (21) and the SCR (22) is unlikely to decrease due to the upper part of the right wall (4B) of the threshing device (4) and the recess (30) of the Glen tank (7). Thus, the reduction in the exhaust gas purification action can be reduced.

  According to the invention described in claim 3, in addition to the effect of the invention described in claim 1 or 2, the recess (30) is formed from the upper left side of the left wall (7A) of the Glen tank (7) toward the lower right side. The first wall (32) extending, the second wall (33) extending downward from the lower end of the first wall (32), and extending downward from the lower end of the second wall (33) to the left side. It is formed by the existing third wall (34), and the second wall (33) is displaced to the right of the conveying spiral (36) of the Glen tank (7) when viewed from the front of the machine body, so that the Glen tank (7) The grain conveyed inside flows down to the conveying spiral (36) without staying and is smoothly discharged.

  According to the invention described in claim 4, in addition to the effect of the invention described in claim 3, the first wall (32) is formed to be inclined 45 degrees downward to the right with respect to the upper surface of the body frame (1). Since the third wall (34) is formed to be inclined 30 degrees to the lower left with respect to the upper surface of the body frame (1), the transported spiral (36 ) To flow smoothly.

  According to invention of Claim 5, in addition to the effect by the invention of any one of Claims 1-4, a Glen tank (7) is provided so that a vertical axis | shaft can be freely rotated to a machine body outer side, Threshing apparatus A stay (45) extending toward the upper side of the exhaust emission control device (20) is provided on the upper right side of (4), and a pin (46) extending in the front-rear direction is provided on the upper portion of the stay (45). A hook (51) that engages with the pin (46) is provided on the upper part of the left wall (7A) or the front wall (7C) of the tank (7), and the stay (45) and the milling cylinder (18) are moved in the front-rear direction. Since it is connected by the extending reinforcing member (47), the support rigidity of the pin (46) is increased, and the Glen tank (7) is reliably brought into the cutting and threshing work position by the engagement of the pin (46) and the hook (51). Can be held.

It is a left view of a combine. It is a top view of a combine. It is a left view explaining an engine and a purification device. It is a right view explaining an engine and a purification device. It is a top view explaining an engine and a purification device. It is a front view explaining the purification | cleaning apparatus provided between the threshing apparatus and the Glen tank. It is a top view explaining the purification | cleaning apparatus provided in the notch part of the Glen tank. It is a left view explaining a urea tank. It is a top view explaining a urea tank. It is a top view explaining the engagement state of a hook etc. and a pin. It is a left view explaining the engagement state of a hook etc. and a pin. It is a front view explaining the hook provided in the front wall of a Glen tank. It is a front view explaining the up-and-down position control member provided in the left wall of the Glen tank.

  The present invention will be described with reference to the drawings. From the viewpoint of the pilot, the front side is the front side, the rear side is the rear side, the right hand side is the right side, and the left hand side is the left side.

  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 the soil surface on the lower side of the machine frame 1, and harvests grain culm on the front side of the machine frame 1. A mowing device 3 is provided, a threshing device 4 for threshing / sorting the harvested cereals on the rear left side of the mowing device 3 is provided, and a maneuvering unit 5 on which a pilot rides on the rear right side of the mowing device 3 is provided. Is provided.

  An engine room 6 on which the engine E is mounted is provided on the lower side of the control unit 5, and a Glen tank 7 is provided on the rear side of the control unit 5 for storing grain that has been threshed and sorted, and the rear side of the Glen tank 7. A discharge auger 8 comprising a vertical discharge auger extending in the vertical direction for discharging the grains to the outside and a horizontal discharge auger extending in the front-rear direction is provided.

  As shown in FIGS. 3 to 5, an intake pipe (not shown) for supplying purified air is connected to the intake port of the engine E, and the exhaust gas burned by the engine E is connected to the exhaust port of the engine E. Is connected to the exhaust pipe 10.

  An exhaust gas purification device 20 that purifies impurities in the exhaust gas is connected to the exhaust pipe 10. The exhaust purification device 20 includes a DPF 21 that removes particulate matter in the exhaust gas, and an SCR 22 that reduces and purifies nitrogen oxides (NOx) in the exhaust gas exhausted from the DPF 21 with ammonia generated from urea water. Has been.

  An injection device 24, which is a valve for injecting urea water into the SCR 22, is connected to the rear portion of the flexible connection pipe 23 that connects the exhaust port of the DPF 21 and the intake port of the SCR. Is connected to a supply device 26 which is a pump for pumping urea water through a flexible connection pipe 25, and further, urea water is stored in the supply device 26 via a flexible connection pipe 27. A urea water tank 28 is connected.

  The exhaust port of the engine E and the intake port of the DPF 21 are connected by a flexible exhaust pipe 11, and the exhaust pipe 12 for discharging the purified exhaust gas to the outside is connected to the exhaust port of the SCR 22.

  As shown in FIGS. 6 and 7, the DPF 21 and the SCR 22 of the exhaust purification device 20 are provided between the threshing device 4 and the Glen tank 7 with the longitudinal direction thereof being along the longitudinal direction of the body, and are fixed to the body frame 1. It is supported on a horizontal frame 16 fixed to the upper ends of a plurality of vertical frames 15 extending in the direction. In addition, DPF21 is provided in the left side which is the threshing apparatus 4 side, and SCR22 is provided in the right side which is the Glen tank 7 side.

  The upper wall 4E of the threshing device 4 is positioned below the upper wall 7E of the grain tank 7, and the right front portion of the upper wall 4E is inclined downward toward the Glen tank 7 and extends in the front-rear direction. Part 4G is formed. Further, in the front view, the upper end portions of the DPF 21 and the SCR 22 are provided so as to be biased downward from the upper wall 7E. Thereby, on the upper side of the DPF 21 and the SCR 22, the pin 46 laid on the stay 45 extending to the upper right side from the inclined portion 4 </ b> G of the threshing device 4, and the stay 55 extending to the left side from the left wall 7 </ b> A of the Glen tank 7. A fixed vertical position restricting member 56 is provided, and the vertical position restricting member 56 engages with the pin 46 to restrict the vertical position of the glen tank 7, thereby smoothly engaging the hook 51 and the pin 46 described later. It shall be possible.

  The Glen tank 7 is formed of a left wall 7A, a right wall 7B, a front wall 7C, a rear wall 7D, an upper wall 7E, and a bottom wall 7F. A notch portion (“recessed portion” in the claims) 30 having an open front side and a left side is formed in a portion located on the front side. In front view, the SCR 22 enters the notch 30, and the DPF 21 is disposed outside the notch 30. Thereby, DPF21 and SCR22 can be provided in parallel in the left-right direction between the threshing apparatus 4 and the grain tank 7, and the notch part 30 is made small and the reduction | decrease in the storage capacity of the grain tank 7 is suppressed. be able to.

  Since the exhaust purification device 20 having the DPF 21 and the SCR 22 is disposed at a relatively low position, the distance from the engine E to the exhaust purification device 20 is shortened, and the reduction in the exhaust purification action of the exhaust purification device 20 may be reduced. it can. Further, the presence of the upper portion of the right wall 4B of the threshing device 4 and the recess 30 of the glen tank 7 makes it difficult for the atmospheric temperature of the DPF 21 and the SCR 22 to decrease, and the decrease in the exhaust gas purification action can be reduced.

  The whipping cylinder 18 is an apparatus that conveys the grains threshed and selected by the threshing apparatus 4 to the glen tank 7, and the lower part of the whipping cylinder 18 is fixed to the lower part of the right wall 4B of the threshing apparatus 4, The upper part of the whipping cylinder 18 is fixed to the upper part of the left wall 7 </ b> A of the Glen tank 7.

  When viewed from the front, the front side portion of the left wall 7A includes an upper left wall 31 extending downward from the left end of the upper wall 7E, and an upper inclined wall extending downward from the lower end of the upper left wall 31 to the right side ( "First wall") 32 in the claims, an inner left wall ("second wall" in the claims) 33 extending downward from the lower end of the upper inclined wall 32, and a left side from the lower end of the inner left wall 33 It is formed by a lower inclined wall (“third wall” in the claims) 34 extending downward and a lower left wall 35 extending downward from the lower end of the lower inclined wall 34. Moreover, the lower end part of the lower left wall 35 extends to the left end of the bottom wall 7F of the glen tank 7, and the bottom part of the bottom wall 7F extends in the front-rear direction to transfer the grains to the vertical discharge auger. A spiral 36 is provided.

  The downward inclination angle of the upper inclined wall 32 is formed by inclining 45 degrees to the right with respect to the horizontal plane, that is, the upper surface of the body frame 1, and the inner left wall 33 is on the right side of the upper side of the conveying spiral 36. The downward inclination angle of the lower inclined wall 34 is formed so as to be inclined 30 degrees to the lower left with respect to the horizontal plane, that is, with respect to the upper surface of the body frame 1. Thereby, the grain conveyed to the grain tank 7 by the whipping cylinder 18 can be efficiently dropped onto the conveying spiral 36.

  The connecting pipe 23 is provided in the upper part between the DPF 21 and the SCR 22 so as to extend substantially linearly in the front-rear direction, and an injection device 24 is connected to the rear side of the connecting pipe 23. The injection device 24 is fixed to a support member (not shown) provided at the rear portion of the SCR 22. As a result, urea water can be efficiently injected from the injection device 24 to the SCR 22 via the connection pipe 23.

  As shown in FIGS. 4 and 5, the supply device 26 is fixed to a reinforcing plate 17 connected between the front and rear vertical frames 15 that support the horizontal frame 16 that fixes the DPF 21 and the SCR 22. Further, in plan view, the supply device 26 is located below the intermediate portion in the front-rear direction between the DPF 21 and the SCR 22. Thereby, the length of the connecting pipe 25 connecting the injection device 24 and the supply device 26 can be shortened, and urea water can be efficiently supplied from the supply device 26 to the injection device 24. Further, the urea water tank 28 can be fixed to the machine body frame 1 positioned below the supply device 26. Thereby, the space below the supply device 26 can be used effectively.

  As shown in FIGS. 4 and 5, the urea water tank 28 is fixed to the body frame 1 located below the step portion 5 </ b> A of the control portion 5. As shown in FIGS. 8 and 9, a flexible water supply pipe 29 is connected to the oil supply port of the urea water tank 28, and the water supply port 29 </ b> A provided at the tip of the water supply pipe 29 is a step part 5 </ b> A of the control unit 5. Is disposed in an opening (not shown) formed in the lower right wall 5B. That is, the water supply port 29A is disposed on the lower right side of the step portion 5A. As a result, the space formed below the step portion 5A can be used effectively, and the urea water can be efficiently replenished from the urea water replenishment tank to the urea water tank 28. In this case, the elevating step 5C may be pulled out to temporarily place the replenishment tank. As a result, the replenishment work can be further reduced. In addition, when the main gearshift lever that adjusts the traveling speed of the traveling device 2 is operated to the forward movement position when the cutting and scraping pedal for stopping the driving of the harvesting device 3 provided in the step unit 5A of the control unit 5 is depressed. Are programmed to drive the reaping device 3.

  As shown in FIGS. 3 to 5, the exhaust pipe 12 extends rearward from the exhaust port of the SCR 22, bends approximately 90 degrees toward the left side on the rear side of the injection device 24, and extends to the left side. Bends approximately 90 degrees toward the upper side on the rear side and extends upward, and then extends toward the diagonally left rear side on the upper wall 4E of the threshing device 4 to the rear side of the milling cylinder 18 It is extended. Thereby, the handling cylinder cover 40 can be easily opened and closed around the support shaft 41 provided in the left-side part of the upper wall 4E and extending in the front-rear direction.

  As shown in FIGS. 10 and 11, a support shaft 38 extending in the vertical direction is arranged above the front side of the communication portion 37 that mounts the lower portion of the vertical discharge auger, and the support shaft 38 is the rear wall of the Glen tank 7. It is fixed to the rear end of the stay 38A extending from 7D toward the rear side. The support shaft 38 is rotatably fitted to a boss on a support frame (not shown) that is erected on the body frame 1. When maintenance work such as filter replacement of the DPF 21 is performed, the Glen tank 7 is rotated in the vertical axis about the support shaft 38 to move the front side portion of the Glen tank 7 to the right outer side (outside the machine body). On the other hand, when the cutting operation is performed, the Glen tank 7 is vertically rotated about the support shaft 38 in the reverse direction to move the front side portion of the Glen tank 7 to the left inner side, and is positioned on the body frame 1. In this specification, for convenience, the state where the front side portion of the Glen tank 7 is moved to the right outer side is referred to as an open state, and the state where the front side portion of the Glen tank 7 is moved to the left inner side is referred to as a storage state. say. In this stored state, cutting and threshing work is performed. Further, a bulging portion 39 that bulges to the left side is formed in a portion of the left wall 7A of the Glen tank 7 that is located on the rear side of the cereal cylinder 18 in order to increase the storage capacity of the Glen tank 7. Yes.

  As shown in FIG. 12, a rod 50 is provided along the front wall 7 </ b> C of the Glen tank 7. A lower portion of the rod 50 is rotatably supported by a support shaft (not shown) extending in the front-rear direction of the front wall 7C, and a base portion of a hook 51 whose left lower portion is opened is connected to the upper portion of the rod 50. Yes. The intermediate portion of the hook 51 is pivotally supported by the upper portion of the left wall 7A or the upper portion of the front wall 7C of the Glen tank 7C so as to be rotatable up and down. In the housed state, the rod 50 stands on the right side of the notch 30 so as not to overlap the notch 30, and the hook 51 engages with the pin 46 extending in the front-rear direction. In the case of turning from the stored state to the opened state, after releasing the engagement between the hook 51 and the pin 46, the Glen tank 7 is turned rightward about the support shaft 38.

  As shown in FIG. 13, a stay 55 extending toward the left side is provided on the rear side of the hook 51 in the upper left wall 31 that is the upper part of the left wall 7 </ b> A of the Glen tank 7. The vertical position restricting member 56 opened on the left side is fixed. In the retracted state, the vertical position restricting member 56 engages with the pin 46, and the engagement between the vertical position restricting member 56 and the pin 46 is released when rotating from the retracted state to the open state.

  As shown in FIG. 6, the pin 46 is installed on the upper part of the pair of front and rear stays 45 extending from the inclined part 4G of the threshing device 4 toward the upper right side. Further, in order to increase the rigidity of the stay 45 and prevent deformation, the stay 45 is fixed to the front portion of the cereal cylinder 18 by a reinforcing member 47 extending in the front-rear direction.

  Thereby, the threshing apparatus 4 and the glen tank 7 can be firmly connected to the storage state of the glen tank 7 through the hook 51 and the vertical position regulating member 56.

DESCRIPTION OF SYMBOLS 1 Airframe frame 3 Cutting device 4 Threshing device 4B Right wall 4E Upper wall 5 Steering part 5A Step part 5B Right wall 7 Glen tank 7A Left wall 7C Front wall 18 Flour cylinder 20 Exhaust gas purification device 21 DPF
22 SCR
28 Urea water tank 29A Water supply port 30 Notch (recess)
32 Upper inclined wall (first wall)
33 Inner left wall (second wall)
34 Lower inclined wall (third wall)
36 Conveying spiral 45 Stay 46 Pin 47 Reinforcing member 51 Hook E Engine

Claims (5)

A trimming device (3) for trimming cereals is provided on the front side of the body frame (1), and a threshing device (4) for threshing and sorting the harvested stalks is provided on the rear left side of the trimming device (3), A steering part (5) on which the operator gets on the rear right side of the reaping device (3) is provided, and a grain tank (7) for storing the grain that has been threshed is provided on the rear side of the steering part (5), In a combine provided with a cereal cylinder (18) for conveying the grain from the lower part of the right wall (4B) of the threshing device (4) to the upper part of the left wall (7A) of the Glen tank (7),
An exhaust purification device (20) for purifying exhaust gas of the engine (E) is provided at a site between the threshing device (4) and the Glen tank (7),
The exhaust purification device (20) includes a DPF (21) that removes particulate matter in the exhaust gas and an SCR (22) that reduces and purifies the nitrogen oxides in the exhaust gas with ammonia generated from urea water. Prepared,
The longitudinal direction of each of the DPF (21) and the SCR (22) is directed in the longitudinal direction of the body, and the SCR (22) is juxtaposed on the right side of the DPF (21),
Forming a recess (30) whose front and left sides are open on the front side of the grain mill (18) on the left wall (7A) of the Glen tank (7),
Allowing the SCR (22) to enter the recess (30);
A urea water tank (28) for storing urea water to be supplied to the SCR (22) is provided below the step portion (5A) of the control unit (5), and a water supply port (29A) of the urea water tank (28) is provided. Is arranged on the right side of the lower right part of the step part (5A).   The combine of Claim 1 which has arrange | positioned the said DPF (21) and SCR (22) in the position lower than the upper wall (4E) of a threshing apparatus (4) by the body front view.   A first wall (32) extending from the upper left side of the left wall (7A) of the Glen tank (7) toward the lower right side and a lower end of the first wall (32) downward from the lower end of the first wall (32). The second wall (33) extending toward the left side and the third wall (34) extending toward the lower left side from the lower end of the second wall (33). The combine according to claim 1 or 2, wherein 33) is arranged so as to be biased to the right of the conveying helix (36) of the Glen tank (7).   The first wall (32) is inclined 45 degrees downward to the right with respect to the upper surface of the fuselage frame (1), and the third wall (34) is inclined to the left with respect to the upper surface of the fuselage frame (1). The combine according to claim 3, wherein the combine is formed with an inclination of 30 degrees.   The Glen tank (7) is provided on the outer side of the machine body so that the vertical axis can freely rotate. A stay (45) extending toward the upper side of the exhaust gas purification device (20) is provided on the upper right side of the threshing device (4). A pin (46) extending in the front-rear direction is provided on the upper portion of the stay (45), and the pin (46) is provided on the left wall (7A) or the front wall (7C) of the Glen tank (7). 5. The hook according to claim 1, wherein a hook (51) that engages with the stay (45) and the cereal cylinder (18) are connected by a reinforcing member (47) extending in the front-rear direction. Combine.

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