JP2019140931A - Combine - Google Patents

Abstract

To provide a combine in which it is expected to easily scatter exhaust in air quickly and discharge the exhaust from an engine while enhancing a cooling effect of the exhaust.SOLUTION: A combine includes a threshing device 5, a grain tank 6, an engine 7 positioned in front side from the grain tank 6, and an exhaust pipe 20 for discharging the exhaust from the engine 7 to the outside from a discharging outlet 21 of the rear end. Bulging parts 6B, 6C bulging toward the side of the threshing device 5 at the side of the threshing device 5 side of the grain tank 6 are formed. The exhaust pipe 20 is extended from the front part of the grain tank 6 to the rear between the threshing device 5 and the grain tank 6, in a rear upward inclined posture and in a state to pass the lower side of the bulging parts 6B, 6C of the grain tank 6. The rear end of the exhaust pipe 20 is protruded into the upper side from the upper edge of the grain tank 6.SELECTED DRAWING: Figure 1

Description

  The present invention relates to a combine, and more particularly, to a combine in which an engine is provided below a driving unit at the front of the machine body, and a threshing device and a grain tank are arranged in the machine body lateral direction.

  Conventionally, in order to exhaust the exhaust gas (exhaust gas) from the engine to the outside of the machine body, an exhaust pipe extending rearward and inclined between the threshing device and the grain tank is provided, and the exhaust pipe is connected to the grain tank. There is one configured to extend upward from the upper end of the threshing device at an intermediate position in the front-rear direction and to discharge the exhaust outward from an exhaust port that opens to the threshing device side (for example, Patent Document 1). reference).

Japanese Patent Laid-Open No. 2006-168022

  In the above-described conventional configuration, the exhaust pipe is configured to exhaust at the intermediate position in the front-rear direction of the grain tank, and the exhaust port is located at a position lower than the upper end of the grain tank, so that the exhaust exhaust is difficult to diffuse into the atmosphere. There is a risk of staying in that place. Further, since the exhaust pipe has a short exhaust path, the exhaust temperature is hardly lowered while the high-temperature exhaust discharged from the engine is guided inside the exhaust pipe.

  Thus, it has been desired to exhaust the exhaust from the engine while facilitating the quick diffusion of the exhaust into the atmosphere and enhancing the cooling effect of the exhaust.

The characteristic configuration of the combine according to the present invention is as follows:
A threshing device for threshing the harvested cereal straw;
A grain tank for storing grains obtained by the threshing treatment, which is located in a state aligned with the threshing device and the machine body lateral direction;
An engine located in front of the grain tank;
An exhaust pipe for exhausting the exhaust from the engine to the outside through a discharge port at the rear end, and
A bulging portion bulging toward the threshing device side is formed on the side portion on the threshing device side of the grain tank,
The exhaust pipe is positioned in front of the grain tank in a rearwardly inclined posture between the threshing device and the grain tank and passing through the lower side of the bulging portion of the grain tank. Extending from the rear to the rear,
The rear end portion of the exhaust pipe protrudes above the upper end of the grain tank.

  According to the present invention, the exhaust from the engine flows through the exhaust pipe extending in the front-rear direction from the front to the rear of the grain tank, so that the inside of the exhaust pipe contacts the inner surface of the exhaust pipe. However, while flowing, heat is dissipated outward through the exhaust pipe, and the temperature of the exhaust gas tends to decrease.

  Since the exhaust pipe is provided long from the front part to the rear part of the grain tank, in the region through which the exhaust pipe passes, the grain tank is recessed to avoid the exhaust pipe, and the storage capacity is reduced. There is a fear. However, by forming a bulging part in the grain tank and making the exhaust pipe pass through the lower side of the bulging part, it compensates for the shortage of capacity and secures the necessary storage capacity for the whole grain tank can do. In addition, since the upper part of the exhaust pipe is covered with the bulging portion, there is an advantage that it is possible to prevent straw scraps from falling on the exhaust pipe.

  And since the rear-end part of an exhaust pipe protrudes above the upper end of a grain tank, there is no shielding around a discharge port, and exhausted exhaust gas can be quickly diffused in the air. .

  Therefore, the exhaust from the engine can be discharged with the cooling effect of the exhaust enhanced while facilitating the quick diffusion of the exhaust into the atmosphere without sacrificing the storage capacity of the grain tank. .

In the present invention,
A conveyor for discharging the grains stored in the grain tank to the outside of the machine body is provided so as to be switchable between a storage state located above the grain tank and an overhanging state projecting laterally outward.
The transport conveyor is provided with a vertical transport unit that transports the grain upward from the lower part of the grain tank, and a horizontal transport unit that transports the grain laterally from the transport end of the vertical transport unit,
It is preferable that the upper end of the exhaust pipe is located below the lower end of the lateral transfer unit in the storage conveyor in the retracted state.

  According to this configuration, even when the horizontal conveyance section of the conveyance conveyor is switched to the retracted state, the exhaust pipe is positioned below the horizontal conveyance section, so that the horizontal conveyance section contacts the exhaust pipe. The risk of damaging them.

In the present invention,
An exhaust restriction plate that restricts exhaust from the engine from being blown to the lateral conveyance unit in a region below the lateral conveyance unit and extending along the exhaust direction from the exhaust port in the exhaust pipe. It is suitable if it is provided.

  According to this configuration, the exhaust discharged from the discharge port of the exhaust pipe is restricted by the exhaust restriction plate, and thus is not blown onto the transverse feed conveyor. As a result, it is possible to avoid the temperature increase of the transverse feed conveyor due to the heat of the exhaust.

  In the present invention, it is preferable that an inclined surface with a downwardly inclined posture is formed at a rear portion of the upper surface of the grain tank, and the exhaust pipe protrudes upward from the inclined surface of the grain tank.

  According to this configuration, since the exhaust pipe protrudes upward from the inclined surface of the grain tank, the exhaust pipe is positioned at the upper end position of the grain tank even if the exhaust pipe is projected so as to be opened. The protrusion amount protruding upward is not so large.

  As a result, there is little risk that dust such as straw scraps scattered from the upper side of the fuselage will be caught on the upper end of the exhaust pipe or the lateral feed conveyor etc. will come into contact with the exhaust pipe. In this case, the periphery of the upper end is opened and the exhaust is easily diffused into the atmosphere.

  In the present invention, a cerealing device is provided between the threshing device and the grain tank, and conveys the grain obtained by the threshing device upward toward the entrance of the grain tank, It is preferable that the exhaust pipe is passed between the threshing device and the threshing device.

  According to this configuration, the exhaust pipe can be provided in a compact manner by effectively using the space formed between the threshing device and the threshing device.

  In this invention, it is suitable when the said bulging part is formed in the side part by the side of the said threshing apparatus of the said grain tank in the back side of the said cerealing apparatus.

  In the combine, straw scraps and dust are discharged from the rear side of the machine body of the threshing device. Therefore, according to the present configuration, since the upper part of the exhaust pipe is covered with the bulging portion at the rear part of the machine body on the rear side of the cerealing device, the bulging is performed at a place where there is a high risk of falling straw etc. It is possible to effectively prevent the exhaust pipe from falling onto the exhaust pipe.

In the present invention,
The exhaust pipe includes a first exhaust pipe located on the engine side and a second exhaust pipe located on the exhaust port side,
The first exhaust pipe extends from a position corresponding to the exhaust outlet on the engine side in an upwardly inclined posture,
The second exhaust pipe is extended in a rearwardly inclined posture with a gentle slope smaller than the slope of the first exhaust pipe,
The first exhaust pipe and the second exhaust pipe are connected to each other at a position corresponding to the cerealing device in the front-rear direction, and air is introduced into a connection portion between the first exhaust pipe and the second exhaust pipe. It is preferable that the gap is formed.

  According to this configuration, the high-temperature exhaust gas tends to rise upward, but by passing through the inside of the first exhaust pipe in the rearward-upward inclined posture, it contacts the inner surface of the first exhaust pipe and moves rearward and upward. Since it is guided, the first exhaust pipe is deprived of heat and the temperature drops. And since the inclination gradient of the second exhaust pipe located on the exhaust port side is smaller than the inclination gradient of the first exhaust pipe, the temperature decreases at a larger change rate than when passing through the inside of the first exhaust pipe. Become.

  Since a gap for air introduction is formed at the connection between the first exhaust pipe and the second exhaust pipe, when exhaust passes through this connection, the outside air is sucked and joined by the ejector action, so that the exhaust The temperature can be further reduced.

  Moreover, since a gap is formed between the threshing device and the threshing device at the position corresponding to the threshing device in the front-rear direction, a space is easily formed at this position. And since the 1st exhaust pipe and the 2nd exhaust pipe are connected in this position, it is easy to attract | suck the low temperature external air from the clearance gap for air introduction.

  As a result, the exhaust gas can be efficiently guided and discharged to the outside by the exhaust pipe having a rearward and inclined posture, and the temperature of the exhaust gas can be efficiently reduced.

It is a whole side view of a combine. It is a whole top view of a combine. It is a side view of an exhaust pipe arrangement | positioning part. It is a top view of an exhaust pipe arrangement | positioning part. It is a disassembled perspective view of an exhaust pipe arrangement | positioning part.

  Hereinafter, a case where an embodiment of the present invention is applied to a self-removing combine will be described with reference to the drawings.

〔overall structure〕
As shown in FIG.1 and FIG.2, the combine which concerns on this invention is provided with the cutting part 2 which reaps a planted cereal bud at the front part of the traveling body which drive | works with a pair of left and right crawler traveling apparatuses 1,1. A driving unit 4 whose periphery is covered with a cabin 3 is provided on the right side of the front part of the traveling machine body, and a threshing device 5 for threshing cereals harvested by the reaping part 2 and a threshing are provided at the rear part of the traveling machine body. The grain tank 6 which stores the grain obtained by the process is provided in a state of being aligned in the horizontal direction. An engine 7 is provided in a state located below the driving unit 4 of the traveling machine body. The traveling machine body is provided with a grain discharging device 8 as a conveyor for discharging the grains stored in the grain tank 6 to the outside of the machine.

  In this embodiment, when defining the front-rear direction of the aircraft, it is defined along the aircraft advancing direction in the working state, and when defining the left-right direction of the aircraft, the left-right direction is defined as viewed in the aircraft advancing direction. . That is, the direction indicated by reference numeral (F) in FIGS. 1 and 2 is the front side of the body, and the direction indicated by reference numeral (B) in FIGS. 1 and 2 is the rear side of the body. The direction indicated by reference sign (L) in FIG. 2 is the left side of the aircraft, and the direction indicated by reference sign (R) in FIG.

  The cutting unit 2 includes a weeding tool 9 for weeding a planted culm that is to be cut, a plurality of triggering devices 10 that cause the sown planted culm in a vertical position, A clipper-type reaping device 11 that cuts the root of the cereal culm, and a vertical conveying device that transports the reaped cereal cocoon to the threshing device 5 while changing the posture so as to gradually fall from the vertical posture. 12 etc.

  The threshing device 5 performs the threshing process by supplying the tip side to the handling room while sandwiching and transporting the stock source side of the supplied harvested cereal meal by the threshing feed chain 13. In the inside of the handling room, the tip side of the harvested cereal culm is treated by a handling cylinder and a receiving net (not shown) to perform a threshing process. Between the threshing device 5 and the grain tank 6, a screw conveyor type cerealing device 14 that feeds the grain from the lower part of the threshing device 5 toward the grain tank 6 is provided.

  The processed product after the threshing process is sorted into grains, straw scraps, and the like by a lower sorting unit (not shown). The grain is unloaded from the right lateral side of the threshing device 5 by a first object conveying screw (not shown), and then is lifted by the mashing device 14 and conveyed into the kernel tank 6. The grain tank 6 stores the grain fed from the threshing device 5. The grain stored in the grain tank 6 is carried out to the outside by the grain discharging device 8.

  As shown in FIGS. 1 and 2, the grain discharging device 8 is configured so that the grain conveyed by a bottom screw (not shown) provided in a front-back orientation at the bottom of the grain tank 6 is directed upward. It is provided with a screw conveyor type vertical conveying unit 8A for feeding and conveying, and a horizontal conveying unit 8B connected to the upper portion of the vertical conveying unit 8A and for horizontally feeding and conveying the grains to the grain outlet 15 at the tip. .

  The horizontal transport unit 8B is provided so as to be capable of swiveling around the vertical rotation axis Y1 of the vertical transport unit 8A by the operation of an electric motor (not shown). In a state in which the discharging operation is not performed, the horizontal conveyance unit 8B is stored and supported at the home position (position shown in FIG. 2) set on the upper part of the machine body (this state corresponds to the stored state). At the home position, the lateral conveyance unit 8B is received and held by the receiving tool 16. The receiving tool 16 is provided with a substantially U-shaped recessed portion into which the horizontal conveyance portion 8B enters, and receives and supports the horizontal conveyance portion 8B being received so as not to move in the horizontal direction.

  The grain discharging operation can be performed at an arbitrary position by performing a turning movement operation so as to turn the horizontal transport unit 8B to switch to a projecting state projecting laterally outward. Accordingly, the lateral conveyance unit 8B is provided so as to be switchable between a retracted state located above the grain tank 6 and an overhanging state projecting laterally outward.

  The horizontal conveyance unit 8B is provided so as to be able to swing up and down around a horizontal axis X set at a connection point with the vertical vertical conveyance unit 8A so that the grain discharge port 15 moves in the vertical direction. . By moving the hydraulic cylinder 17 (see FIG. 2) in an up-and-down direction, the position of the grain outlet 15 can be adjusted to move up and down.

  As shown in FIGS. 1, 2, and 3, an engine 7 is provided below the operation unit 4. A first exhaust gas treatment device 18 that reduces particulate matter contained in the exhaust gas (exhaust gas) from the engine 7 and a nitrogen oxide contained in the exhaust gas that has been treated by the first exhaust gas treatment device 18. A second exhaust gas treatment device 19 is provided.

  The first exhaust gas treatment device 18 includes a diesel particulate filter (DPF) (not shown), which is a known technique for collecting diesel particulates contained in the exhaust gas, and reduces diesel particulates when the exhaust gas passes through.

The second exhaust gas treatment device 19 performs exhaust gas purification processing using selective catalyst reduction (SCR), which is a known technique. Specifically, urea water, which is an example of a reducing agent, is injected into the exhaust gas to be hydrolyzed to generate ammonia, and the ammonia (NH ₃ ) and nitrogen oxide (NOx) contained in the exhaust gas are chemically reacted. The nitrogen oxides contained in the exhaust gas are reduced by reducing to nitrogen (N ₂ ) and water (H ₂ O).

  The exhaust gas discharged from the engine 7 is subjected to purification treatment for reducing diesel particulates in the first exhaust gas treatment device 18 and then purified to reduce nitrogen oxides contained in the exhaust gas in the second exhaust gas treatment device 19. The exhaust gas that has been subjected to the treatment and finished the purification treatment is discharged to the outside of the machine body through the exhaust pipe 20.

〔Exhaust pipe〕
As shown in FIG. 1, a cylindrical exhaust pipe 20 that exhausts exhaust exhausted from the engine 7 and exhausted from the first exhaust gas treatment device 18 and the second exhaust gas treatment device 19 is provided. The exhaust pipe 20 extends between the threshing device 5 and the grain tank 6 from the front part to the rear part of the grain tank 6 in a rearward rising posture.

  As shown in FIGS. 1 and 2, a discharge port 21 is formed at the rear end of the exhaust pipe 20. The exhaust pipe 20 extends to a position as high as possible, so that the exhaust can be easily diffused into the atmosphere. The exhaust pipe 20 includes a first exhaust pipe 23 on the engine side that receives exhaust gas discharged from an exhaust gas discharge pipe 22 extending from a gas outlet of the second exhaust gas treatment device 19, and a second located on the exhaust port 21 side. And an exhaust pipe 24.

  The first exhaust pipe 23 is extended in a rearwardly inclined posture from a location corresponding to the outlet of the exhaust gas exhaust pipe 22 corresponding to the exhaust outlet on the engine side. The second exhaust pipe 24 is extended in a rearwardly inclined posture with a gentle slope smaller than the slope of the first exhaust pipe 23. A discharge port 21 for discharging the exhaust gas into the air is formed at the end face of the distal end portion of the second exhaust pipe 24.

  The first exhaust pipe 23 is covered with a cover member 25 having a substantially U-shaped cross section. As shown in FIGS. 3 and 4, the cover member 25 is bolted to a mounting bracket 26 fixed to the outer peripheral surface of the first exhaust pipe 23. The second exhaust pipe 24 is provided with a diameter larger than that of the first exhaust pipe 23, and the second exhaust pipe 24 is positioned in a state where the start end of the second exhaust pipe 24 covers the terminal end of the first exhaust pipe 23. ing. A gap S for introducing air is formed at the connection between the first exhaust pipe 23 and the second exhaust pipe 24. The exhaust gas can be cooled by sucking outside air through the gap S by the ejector action accompanying the flow of the exhaust gas. As shown in FIG. 3, the first exhaust pipe 23 and the second exhaust pipe 24 are connected to the cerealing device 14 at a position overlapping in the lateral direction.

  The front side portion of the first exhaust pipe 23 is fixed to the right side wall 5a of the threshing device 5 via a bracket 27 (see FIG. 4). The machine body rear side location of the first exhaust pipe 23 is supported by the threshing device 5 via a connecting portion for the cerealing device 14.

  As shown in FIGS. 2 and 4, the exhaust pipe 20 (the first exhaust pipe 23 and the second exhaust pipe 24) is passed between the threshing device 14 and the threshing device 5 while extending in the front-rear direction. . As shown in FIGS. 4 and 5, the upper portion of the threshing device 14 is supported on the right side wall 5 a of the threshing device 5 via the connecting brackets 28 and 29 on both the front and rear sides. The rear connection bracket 29 of the front and rear connection brackets 29, 29 is formed of a plate-like member having a wide width in the vertical direction and the front-rear direction. One end of the connection bracket 29 is integrally connected to the outer peripheral surface of the cerealing device 14 by welding or the like, and the other end of the connection bracket 28 is connected to the right side wall 5a of the threshing device 5 by bolts.

  The front connection bracket 28 of the front and rear connection brackets 28 and 29 is not illustrated in detail, but the first structure on the conveyor side integrally connected to the outer peripheral surface of the cerealing device 14 by welding or the like. 30, the 2nd structure 31 by the side of the threshing device 5 bolted to the side wall 5a of the threshing device 5, and the 1st structure 30 and the 2nd structure 31 are provided, and each structure 30, It consists of an intermediate third structure 32 that is bolted to 31.

  A mounting bracket 33 that is integrally fixed to the outer peripheral surface of the first exhaust pipe 23 is bolted to the third structural body 32. With the third structural body 32 connected to the first exhaust pipe 23, the third structural body 32 is bolted to the first structural body 30 and the second structural body 31, respectively, thereby connecting the second exhaust pipe 24 (exhaust gas). The tube 20) can be connected to and supported by the threshing device 5.

  As described above, the start end of the second exhaust pipe 24 is connected to the terminal end of the first exhaust pipe 23. Further, the rear portion of the second exhaust pipe 24 is connected to the side wall 5 a of the threshing device 5 through the connection bracket 36. Therefore, the second exhaust pipe 24 is supported by a connection portion between the connection portion with the first exhaust pipe 23 and the connection bracket 36 on the rear side.

Next, the configuration near the discharge port 21 of the second exhaust pipe 24 will be described.
As shown in FIG. 1, an inclined surface 6 </ b> A is formed at the rear portion of the upper surface of the grain tank 6 in a downwardly inclined posture. The rear end portion of the second exhaust pipe 24 protrudes upward from the inclined surface 6 </ b> A of the grain tank 6. That is, the exhaust pipe 20 protrudes above the upper end of the grain tank 6. The rear end portion of the second exhaust pipe 24, which is a cylindrical cylindrical body, has a shape obtained by cutting the cylindrical body along a plane substantially orthogonal to the axial direction, and the substantially circular discharge port 21 faces upward and rearward. It is formed in an open state.

  As shown in FIG. 1, the upper end of the second exhaust pipe 24 is positioned lower than the lower end of the horizontal conveying portion 8 </ b> B in the storage state in the grain discharging device 8. The exhaust from the engine 7 is restricted from being blown to the lateral transport unit 8B in a region below the lateral transport unit 8B and extending from the discharge port 21 in the second exhaust pipe 24 along the exhaust direction. An exhaust restriction plate 35 is provided.

  The exhaust restriction plate 35 is configured by a rectangular plate body in plan view. The exhaust restriction plate 35 is integrally connected to the upper edge of the discharge port 21 and is provided in a state extending in a substantially horizontal posture toward the rear of the machine body. The exhaust restriction plate 35 is provided in a shape in which the central portion is high and the left and right side portions are gently inclined downward in a front view so that the exhaust is guided as far back as possible.

  By providing the exhaust restriction plate 35, the exhaust pipe 20 is simplified, and the exhaust gas discharged from the discharge port 21 is received and guided to flow backward to prevent it from being blown to the lateral conveyance unit 8B. Can do.

(Grain tank)
The grain tank 6 will be described.
The grain tank 6 is formed in a constricted shape as viewed in the longitudinal direction of the machine body. As shown in FIGS. 4 and 5, a first recessed portion Q <b> 1 for entering the second exhaust gas treatment device 19 is formed on the left side of the machine body front portion in the grain tank 6. A second recessed portion Q2 through which the exhaust pipe 20 passes is formed on the left side of the grain tank 6 on the machine body rear side of the second exhaust gas treatment device 19 and on the machine body front side of the cerealing device 14. Yes.

  As shown in FIG. 2, a front side bulging portion 6B that bulges toward the threshing device 5 side is formed on the upper side of the second recessed portion Q2. The front side bulging portion 6B bulges above the threshing device 5 so as to overlap the threshing device 5 in plan view. By forming the front side bulging portion 6B in this way, the amount of stored grains can be increased. The front-side bulging portion 6B is provided so as to cover the upper side of the first exhaust pipe 23, and dust such as straw scraps that is generated during the harvesting operation and floats on the upper side is provided above the first exhaust pipe 23. Can be prevented from falling on and depositing.

  As shown in FIGS. 4 and 5, a third recessed portion Q <b> 3 is formed at the left portion of the front and rear intermediate portion of the grain tank 6 so as to extend along the vertical direction. The third recessed portion Q3 is formed in the right side portion of the grain tank 6 so as to be long in the vertical direction from the bottom portion to the upper end portion of the tank and recessed into the tank inner side (right side of the machine body). In the third recessed portion Q3, the whipping device 14 is deployed.

  On the rear side of the third recessed portion Q3 and on the rear side of the machined portion of the cerealing device 14, a fourth recessed portion Q4 is formed at the left side of the grain tank 6 and extends in the front-rear direction for the exhaust pipe 20 to pass through. Has been. As shown in FIGS. 2 and 4, on the side of the grain tank 6 on the side of the threshing device 5, the rear side bulging portion that bulges toward the threshing device 5 side, as shown in FIGS. 6C is formed. By forming the rear side bulging portion 6C in this manner, the amount of stored grains can be further increased, and the rear side bulging portion 6C is provided so as to cover the upper side of the second exhaust pipe 24. It is possible to prevent dust such as straw scraps generated along with the harvesting operation and floating upward from falling on the second exhaust pipe 24 and accumulating.

[Another embodiment]
(1) In the above-described embodiment, the first exhaust pipe 23 and the second exhaust pipe 24 are provided, and the second exhaust pipe 24 extends in a back-up inclined posture with a gentle slope smaller than the slope of the first exhaust pipe 23. However, instead of this configuration, the first exhaust pipe 23 and the second exhaust pipe 24 may be configured to extend with the same inclination gradient, and one exhaust pipe is provided without being divided. It may be composed of a pipe member.

(2) In the said embodiment, although the exhaust pipe 20 showed what passed between the threshing apparatus 14 and the threshing apparatus 5, it replaced with this structure and the threshing apparatus 14 is close to the threshing apparatus 5. If it is the structure provided in a position, it is good also as a structure by which the exhaust pipe 20 is passed between the cerealing apparatus 14 and the grain tank 6. FIG.

(3) In the above-described embodiment, the upper end of the exhaust pipe 20 is positioned below the lower end of the stored horizontal transfer unit 8B. Instead of this configuration, the stored horizontal transfer unit 8B, As a configuration in which the pipe 20 is displaced in the horizontal direction, the upper end of the exhaust pipe 20 may be positioned higher than the lower end of the stored horizontal transport unit 8B.

  The present invention can be applied not only to a self-removing combine but also to an ordinary combine.

DESCRIPTION OF SYMBOLS 5 Threshing apparatus 6 Grain tank 6A Inclined surface 6B, 6C Expansion part 7 Engine 8 Conveyor 8A Vertical conveyance part 8B Horizontal conveyance part 14 Graining device 20 Exhaust pipe 23 1st exhaust pipe 24 2nd exhaust pipe S Crevice

Claims (7)

A threshing device for threshing the harvested cereal straw;
A grain tank for storing grains obtained by the threshing treatment, which is located in a state aligned with the threshing device and the machine body lateral direction;
An engine located in front of the grain tank;
An exhaust pipe for exhausting the exhaust from the engine to the outside through a discharge port at the rear end, and
A bulging portion bulging toward the threshing device side is formed on the side portion on the threshing device side of the grain tank,
The exhaust pipe is positioned in front of the grain tank in a rearwardly inclined posture between the threshing device and the grain tank and passing through the lower side of the bulging portion of the grain tank. Extending from the rear to the rear,
A combine in which a rear end portion of the exhaust pipe protrudes above an upper end of the grain tank. A conveyor for discharging the grains stored in the grain tank to the outside of the machine body is provided so as to be switchable between a storage state located above the grain tank and an overhanging state projecting laterally outward.
The transport conveyor is provided with a vertical transport unit that transports the grain upward from the lower part of the grain tank, and a horizontal transport unit that transports the grain laterally from the transport end of the vertical transport unit,
The combine according to claim 1, wherein an upper end of the exhaust pipe is positioned below a lower end of the lateral conveyance unit in the conveyance conveyor in the retracted state.   An exhaust restriction plate that restricts exhaust from the engine from being blown to the lateral conveyance unit in a region below the lateral conveyance unit and extending along the exhaust direction from the exhaust port in the exhaust pipe. The combine according to claim 2 provided. An inclined surface having a downwardly inclined posture is formed at the rear of the upper surface of the grain tank,
The combine according to any one of claims 1 to 3, wherein the exhaust pipe projects upward from the inclined surface of the grain tank. Between the threshing device and the grain tank, a cerealing device is provided that conveys the grain obtained by the threshing device upward toward the inlet of the grain tank,
The combine according to any one of claims 1 to 4, wherein the exhaust pipe is passed between the threshing device and the threshing device.   The combine according to claim 5, wherein the bulging portion is formed on a side portion of the grain tank on the threshing device side on the rear side of the cerealing device. The exhaust pipe includes a first exhaust pipe located on the engine side and a second exhaust pipe located on the exhaust port side,
The first exhaust pipe extends from a position corresponding to the exhaust outlet on the engine side in an upwardly inclined posture,
The second exhaust pipe is extended in a rearwardly inclined posture with a gentle slope smaller than the slope of the first exhaust pipe,
The first exhaust pipe and the second exhaust pipe are connected to each other at a position corresponding to the cerealing device in the front-rear direction, and air is introduced into a connection portion between the first exhaust pipe and the second exhaust pipe. The combine according to claim 5 or 6, wherein a gap is formed.

Images