JP2018121572A - combine - Google Patents

Abstract

PROBLEM TO BE SOLVED: To satisfy such a demand of minimizing possibility of damage to an exhaust pipe while facilitating emission of an exhaust gas from an engine to the atmosphere.SOLUTION: A combine includes: an engine 20; a threshing device 5 for threshing a harvested grain culm; a grain tank 6 positioned while being aligned in a machine body transverse direction to the threshing device 5 and storing the grain acquired through a threshing process; an exhaust pipe 26 extending in a vertical direction between the threshing device 5 and the grain tank 6 and discharging exhaust gas from the engine 20 to the outside; and a protective member 44 for protecting an upper end part of the exhaust pipe 26. The protective member 44 is supported by a portion at a side of the grain tank in the threshing device 5.SELECTED DRAWING: Figure 1

Description

  The present invention relates to a combine in which an engine is mounted and a threshing device and a grain tank are arranged in a state in which the machine is arranged in the horizontal direction.

  Conventionally, an operating part is provided in the front part of the machine body, an engine is provided below the operating part, and an exhaust pipe for exhausting the exhaust from the engine to the outside of the machine faces upward between the threshing device and the grain tank. There was one provided in a state extending to (see, for example, Patent Document 1).

JP 2016-21968 A

  In the above configuration, the exhaust pipe extends upward, so that, for example, the exhaust from the engine can be easily dissipated into the atmosphere without any disadvantages such as spreading over a narrow space below the fuselage. However, in the above-described conventional configuration, the exhaust pipe is exposed outward from above the fuselage, and therefore, if an obstacle approaches from the outside and contacts the exhaust pipe, the exhaust pipe may be damaged early.

  If it demonstrates, in the said conventional structure, the grain discharge auger for discharging | emitting the grain stored by the grain tank outside is provided in the state located in an upper part of a body. Basically, the vertical position and turning position of the grain discharge auger are detected by the position sensor, and the contact of the grain discharge auger with the exhaust pipe is avoided.

  However, if the grain discharge auger is lowered while the grain discharge auger is positioned on the upper side of the exhaust pipe, the grain discharge auger contacts the exhaust pipe due to the accuracy of the position sensor. There is a risk. In addition to the grain discharge auger, there is a possibility that a tree branch or the like may come into contact with the exhaust pipe while the aircraft is running. Although it is conceivable to provide a protective member so that the exhaust pipe can be prevented from being damaged even if it comes into contact with the protective member, a large load is applied to the protective member, so that the cost increases when a dedicated support member is provided. There are disadvantages.

  Therefore, it has been desired to firmly support a protective member that protects the exhaust pipe without increasing the cost, while making the exhaust from the engine easy to dissipate into the atmosphere.

The characteristic configuration of the combine according to the present invention is as follows:
Engine,
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 exhaust pipe extending vertically between the threshing device and the grain tank and exhausting exhaust from the engine to the outside;
A protective member for protecting the upper end of the exhaust pipe,
The said protection member exists in the point currently supported by the said grain tank side part in the said threshing apparatus.

  According to the present invention, the exhaust pipe extends in the vertical direction between the threshing device and the grain tank, and exhausts the exhaust gas from the upper end that is largely open on the outer side, so that it can be easily diffused into the atmosphere. It will be a thing. And when an obstruction approaches the upper end part of an exhaust pipe, an exhaust pipe is protected by a protection member and it can avoid that an obstruction contacts an exhaust pipe.

  The threshing device has a strong support structure because various devices for threshing are provided inside. On the other hand, the grain tank often has a simple support structure as compared with the threshing device in order to make the structure movable to a posture of projecting outward, for example, for maintenance work of the machine body. And since a protection member is supported by the grain tank side part of a threshing apparatus, it can support stably using the threshing apparatus which has a firm support structure. Furthermore, even when the posture of the grain tank is changed, the protective member remains on the threshing apparatus side, so that it is not necessary to remove the protective member and the operation can be performed without trouble.

  Therefore, it is possible to firmly support the protective member that protects the exhaust pipe without increasing the cost while making the exhaust from the engine easy to dissipate into the atmosphere.

  In this invention, when the said protection member is supported by the side wall of the said threshing apparatus, it is suitable.

  According to this structure, since a protection member is supported by the side wall of the threshing apparatus which has a firm support structure, a protection member can be supported in the more stable state.

  In this invention, it is suitable when the supporting member which supports the said exhaust pipe is supported by the said grain tank side part, and the said protection member is supported by the said supporting member.

  According to this configuration, it is possible to support the protection member by effectively using the support member for supporting the exhaust pipe, compared to a configuration in which a member for supporting the exhaust pipe and the protection member is provided separately, Simplification of the support structure can be achieved by sharing the members.

In the present invention, between the threshing device and the grain tank, a cerealing device that pumps the grain from the lower part of the threshing device toward the inlet of the grain tank is provided,
It is preferable that the upper end portion of the cerealing device is supported by the support member in a state of being aligned with the exhaust pipe in the horizontal direction.

  According to this structure, the whipping apparatus for conveying the grain obtained by the threshing process in the threshing apparatus toward the grain tank is provided between the threshing apparatus and the grain tank. The upper end of the cerealing device and the exhaust pipe are arranged in the horizontal direction of the machine body, and the upper end of the cerealing device and the exhaust pipe are supported by the support members, respectively.

  Therefore, not only the exhaust pipe and the protection member but also the cerealing device is supported by the same support member, so that the support structure can be further simplified by sharing the members.

In the present invention, a grain discharging device for discharging the grain stored in the grain tank to the outside is provided,
The grain discharging device is provided with a vertical conveying section extending upward from a lower rear portion of the grain tank, and a horizontal conveying section extending laterally from the upper end of the vertical conveying section,
The horizontal transport unit can be swung around the vertical axis, and can swing up and down around the horizontal axis so that the grain outlet provided in the tip portion moves in the vertical direction,
The exhaust pipe protrudes above the upper end of the threshing device,
It is preferable that the protective member is positioned below the upper end portion of the lateral conveyance unit stored in the home position on the in-body side.

  According to this structure, since the exhaust pipe protrudes above the upper end part of the threshing apparatus, the area | region by the side of the threshing apparatus in an exhaust pipe is the space open | released largely outward. As a result, the exhaust gas discharged from the exhaust outlet at the upper end of the exhaust pipe can be easily diffused into the atmosphere.

  When the discharging operation is not being performed, the horizontal conveyance unit is stored at the home position on the inner side of the machine body. When the discharging operation is performed, the horizontal transport unit is lifted from the home position and then turned to a position suitable for discharging. At that time, when the horizontal conveyance unit descends at a position where the upper end portion of the exhaust pipe exists, the horizontal conveyance unit contacts the protective member to protect the exhaust pipe. When the horizontal conveyance unit is at the home position, the protective member is located below the upper end of the horizontal conveyance unit, so the protective member does not protrude upward from the horizontal conveyance unit. There are no disadvantages such as tree branches caught on the protective member.

In the present invention, the upper end portion of the exhaust pipe is bent so that the exhaust outlet opens toward the threshing device side,
It is preferable that the protective member is provided in a state extending upward from a portion supported by the grain tank side portion, and the upper portion of the upper and lower intermediate portions is bent toward the threshing device side. is there.

  According to this configuration, the engine exhaust is discharged outward from the exhaust outlet. Since the exhaust outlet opens toward the threshing device side, the exhaust is discharged in a state of flowing toward the threshing device side. That is, it can be avoided that the high-temperature exhaust flows to the grain tank side and the grains stored in the grain tank are heated by the high-temperature exhaust.

  And the lower part of the protective member extends upward from the part supported by the grain tank side part, and upwards at a position lower than the part bent toward the threshing device side in the exhaust pipe. The extending part can be protected effectively. Since the upper part from the upper and lower intermediate part of the protection member is bent toward the threshing apparatus side, the part bent so that the exhaust pipe faces the threshing apparatus side can be effectively protected.

  Therefore, by making the shape of the protective member conform to the shape of the exhaust pipe while avoiding that the grain stored in the grain tank is heated by the high-temperature exhaust, the periphery of the exhaust pipe The exhaust pipe can be effectively protected even with a protective member having a relatively simple shape such as a bent shape of the rod, instead of a complicated configuration surrounding the entire area.

It is a whole side view of a combine. It is a whole top view of a combine. It is a vertical side view around an engine. It is a perspective view of the upper part of an exhaust pipe. It is a disassembled perspective view which shows the connection structure of the upper part of a grain raising conveyor. It is a cross-sectional top view which shows the connection structure of the upper part of a cereal conveyor. It is a left view which shows the support structure of the upper part of an exhaust pipe. It is a right view which shows the support structure of the upper part of an exhaust pipe. It is a cross-sectional top view which shows the support structure of the upper part of an exhaust pipe. It is a front view which shows the positional relationship of the upper part of an exhaust pipe, and another apparatus.

  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 grain cocoon in the front part of the traveling body which self-propels by the 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. A driving unit 8 is provided in a state of being positioned below the driver seat 7 in the driving unit 4 of the traveling machine body, and an unloader 9 is provided as a grain discharging device that discharges the grain stored in the grain tank 6 to the outside of the machine. It has been.

  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 10 for weeding a planted grain culm stock to be harvested, a plurality of trigger devices 11 for causing the weeded planted culm in a vertical position, and a planting caused A clipper type reaping device 12 for cutting the root of the cereal culm, and a vertical conveying device for transporting the reaped cereal to the threshing device 5 while changing the posture so as to gradually fall from the vertical posture. 13 etc.

  The threshing device 5 feeds the tip side to the handling chamber 14 for threshing processing while holding the stock source side of the supplied harvested cereal meal by the threshing feed chain 53 and the holding rail 54 and transporting it backward in the machine body. . As shown in FIG. 2, a handling cylinder 15 that is driven to rotate around the front and rear axis, a circular receiving net (not shown) and the like in the front-rear direction along the outer periphery on the lower side, etc. In addition, the head side of the harvested cereal culm is handled and processed by the handling cylinder 15 and the receiving net. Between the threshing device 5 and the grain tank 6, a cereal conveyor 16 is provided as a cerealing device that feeds the grain from the lower part of the threshing device 5 toward the inlet 6 a of the grain tank 6. .

  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 lifting conveyor 16 and transferred into the grain 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 unloader 9.

  As shown in FIGS. 1 and 2, the unloader 9 vertically feeds and conveys the grain conveyed by a bottom screw (not shown) provided in a front-back orientation at the bottom of the grain tank 6. A vertical feed screw conveyor 9A as a vertical conveyance unit and a horizontal feed screw conveyor as a horizontal conveyance unit that is connected to the upper part of the vertical feed screw conveyor 9A and laterally conveys the grains to the grain outlet 17 at the tip. 9B.

  The transverse feed screw conveyor 9B is provided so as to be capable of swiveling over the entire circumferential direction (360 degrees) around the longitudinal rotation axis Y1 of the longitudinal feed screw conveyor 9A. The grain discharging operation can be performed at an arbitrary position by performing a turning movement operation by an operation of an electric motor with a reduction mechanism (not shown).

  The lateral feed screw conveyor 9B is provided so as to be swingable up and down around the lateral axis X set at the connection point with the longitudinal longitudinal screw conveyor 9A so that the grain discharge port 17 moves in the vertical direction. ing. By moving the hydraulic cylinder 18 (see FIG. 2) in an up-and-down direction, the position of the grain outlet 17 can be adjusted up and down.

  In a state where the discharging operation is not performed, the transverse feed screw conveyor 9B is stored and supported at a home position (position indicated by a solid line in FIG. 2) set at the upper part of the machine body. At the home position, the transverse feed screw conveyor 9B is received and held by the receiving device 19. The receiving tool 19 includes a substantially U-shaped recessed portion into which the lateral feed screw conveyor 9B enters, and receives and supports the lateral feed screw conveyor 9B being received so as not to move in the lateral direction.

  Although not shown, the vertical position for detecting the vertical swing position around the lateral axis X of the lateral feed screw conveyor 9B and the turning position about the rotational axis Y1 of the lateral feed screw conveyor 9B, respectively. A sensor and a turning position sensor are provided. A control device is provided for controlling the operation of the electric motor for turning and the hydraulic cylinder 18 so as to move to the commanded position based on an operation command of a manual operation unit provided separately. Since the control configuration for these operations is a conventionally well-known configuration, a detailed description thereof will be omitted.

  When performing the turning movement operation of the transverse feed screw conveyor 9B by manual operation, as shown in FIG. 2, a first turning region H1 corresponding to the upper portion of the operating unit 4 and a second portion corresponding to the upper portion of the exhaust pipe 26 described later. In the turning area H2, the vertical movement range of the transverse feed screw conveyor 9B is restricted. As shown in FIG. 1, in the first turning area H <b> 1, in order to avoid contact with the cabin 3, the lateral feed screw conveyor 9 </ b> B is set to be turnable only at the maximum ascending position T <b> 1. That is, the lowering operation is restricted in this region. In the second turning area H2, an intermediate position T2 lower than the maximum ascending position T1 is set. In the second turning area H2, the turning is set only at a position higher than the intermediate position T2. Such a vertical movement restriction is such that the control device controls the operation of the hydraulic cylinder 18 based on the detection information of the vertical position sensor and the turning position sensor. When the transverse feed conveyor 9B is lowered in the second turning area H2, the speed is set so as to fall at a lower speed than the speed of the lowering action performed in the other areas.

[Configuration around the engine]
As shown in FIGS. 1, 2, and 3, an engine 20 is provided in the driving unit 8. As shown in FIG. 3, the engine 20 is supported by a body frame 22 via a rubber mount mechanism 21 as an elastic support body in a mounting posture in which the crankshaft direction is the lateral direction of the body.

  A first exhaust gas treatment device 23 that reduces particulate matter contained in the exhaust gas of the engine 20, and a second exhaust gas that reduces nitrogen oxides contained in the exhaust gas after being treated by the first exhaust gas treatment device 23 And a processing device 24.

  The first exhaust gas treatment device 23 includes a diesel particulate collection 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 24 purifies the exhaust gas 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 20 is subjected to purification treatment for reducing diesel particulates in the first exhaust gas treatment device 23, and then purified to reduce nitrogen oxides contained in the exhaust gas in the second exhaust gas treatment device 24. The exhaust gas that has been subjected to the treatment and has undergone the purification treatment is discharged to the outside of the machine body through the exhaust pipe 26.

〔Exhaust pipe〕
As shown in FIG. 3, an exhaust pipe 26 that exhausts the exhaust gas discharged from the second exhaust gas processing device 24 to the outside is provided. The exhaust pipe 26 protrudes above the upper end portion of the threshing device 5. The exhaust pipe 26 rises rearward from the exhaust gas outlet portion 25 of the second exhaust gas treatment device 24 so that the exhaust outlet 27 is located above the upper end of the threshing device 5 between the threshing device 5 and the grain tank 6. It extends to the upper end side location of the threshing device 5 in an inclined posture. As shown in FIGS. 2, 4, and 10, an exhaust outlet 27 is formed at the upper end of the exhaust pipe 26, and the upper end of the exhaust pipe 26 extends in a state of bending toward the threshing device 5 side.

  The exhaust pipe 26 extends to a position as high as possible, so that the exhaust can be easily diffused into the atmosphere. As described above, in the operation control of the lateral feed screw conveyor 9B, the vertical movement range of the lateral feed screw conveyor 9B is restricted in the second turning region H2 corresponding to the upper side of the exhaust pipe 26. In the state, the transverse feed screw conveyor 9B does not come into contact with the exhaust pipe 26.

  The exhaust pipe 26 is an upper exhaust pipe 28 extending from the exhaust gas outlet of the second exhaust gas treatment device 24, an intermediate exhaust pipe 29 connected to the upper exhaust pipe 28, and an upper end connected to the intermediate exhaust pipe 29. The lower exhaust pipe 30 is formed. The intermediate exhaust pipe 29 extends from the outlet portion of the upper exhaust pipe 28 to a position corresponding to the upper end portion of the threshing device 5 in a rear-upward inclined posture. The lower exhaust pipe 30 extends toward the threshing device 5 in a state of being curved with respect to the intermediate exhaust pipe 29.

  The intermediate exhaust pipe 29 is covered with a cover member 31 having a substantially U-shaped cross section. As shown in FIG. 5, the cover member 31 is bolted to a mounting bracket 32 fixed to the outer peripheral surface of the intermediate exhaust pipe 29. The lower exhaust pipe 30 is provided with a larger diameter than the intermediate exhaust pipe 29, and is positioned in a state where the starting end side of the lower exhaust pipe 30 covers the end portion of the intermediate exhaust pipe 29, and is connected and connected via a bracket (not shown). Has been. A gap is formed between the lower-side exhaust pipe 30 and the intermediate exhaust pipe 29, and the exhaust gas can be cooled by sucking outside air into the inside by the ejector action accompanying the flow of the exhaust gas.

  An exhaust outlet 27 for discharging exhaust gas into the air is formed at the end face of the distal end portion of the lower exhaust pipe 30. The lower-side exhaust pipe 30 is configured by a cylindrical body having a substantially circular cross section, and toward the threshing device 5 as it goes upward in the longitudinal direction of the body so that the exhaust outlet 27 opens toward the threshing device 5 side. It is bent towards.

Next, the support structure at the rear side portion of the intermediate exhaust pipe 29 will be described.
As shown in FIGS. 4 and 6, the upper part of the whipping conveyor 16 is supported by the right side wall 5 </ b> A of the threshing device 5 via the connecting brackets 33 and 34 on both the front and rear sides. Of the front and rear connection brackets 33, 34, the rear connection bracket 33 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 33 is integrally connected to the outer peripheral surface of the whipping conveyor 16 by welding or the like, and the other end of the connection bracket 33 is connected to the right side wall 5A of the threshing device 5 by bolts.

  As shown in FIGS. 5 and 6, the front connection bracket 34 of the front and rear connection brackets 33, 34 is a first component on the conveyor side integrally connected to the outer peripheral surface of the cereal conveyor 16 by welding or the like. 35, provided on the side of the threshing device 5 that is bolted to the side wall 5A of the threshing device 5, the first configuration body 35 and the second configuration body 36. It consists of three members, the intermediate third structure 37, which is bolted.

  The first structure 35 is a plate-like body whose width in the vertical direction and in the front-rear direction is narrower than that of the rear connection bracket 33, and is higher than the rear connection bracket 33. It is connected to the outer peripheral surface.

  The second structure 36 is a first vertical surface 36A that is bolted to the side wall 5A of the threshing device 5, a second vertical surface 36B that extends outward from the end of the first vertical surface 36A, and A horizontal surface 36C extending in a direction orthogonal to the first vertical surface 36A and the second vertical surface 36B is integrally provided.

  The third structural body 37 includes a vertical surface portion 37A extending from the first structural body 35 to the second structural body 36, and a horizontal surface extending from the lower end portion on the second structural body 36 side of the vertical surface portion 37A toward the front side of the body. The portion 37B is constituted by a plate-like body integrally formed.

  The outer end portion of the first structure 35 and the one end portion of the vertical surface portion 37 </ b> A of the third structure 37 are bolted at two locations. The other end of the vertical surface portion 37A of the third structural body 37 and the first vertical surface 36A of the second structural body 36 are bolted at two locations, and the horizontal surface portion 37B of the third structural body 37 and the second structural body 36 are connected. The horizontal plane 36C is bolted.

  A mounting bracket 38 that is integrally fixed to the outer peripheral surface of the intermediate exhaust pipe 29 is bolted to an intermediate portion between the connection portion of the third structure 37 to the first structure 35 and the connection portion to the second structure 36. It is connected.

  As shown in FIG. 6, the first component 35 and the second component 36 are separated by a distance larger than the outer diameter of the intermediate exhaust pipe 29, and the third component 37 is not attached. In some cases, the exhaust pipe 26 can pass between the first structure 35 and the second structure 36.

  Accordingly, the front connection bracket 34 corresponds to a support member that supports the exhaust pipe 26. The front connection bracket 34 is supported by the right side wall 5 </ b> A as a grain tank side portion of the threshing device 5.

  As described above, when the front connection bracket 34 is divided, the exhaust pipe 26 can be easily attached when the exhaust pipe 26 is mounted between the side wall 5A of the threshing device 5 and the cereal conveyor 16. become. For example, in the case where the front connection bracket 34 is formed in series over the cereal conveyor 16 and the side wall 5A of the threshing device 5, the rear upper side portion of the exhaust pipe 26 is used as the front connection bracket 34. It is necessary to work through the lower side between the front side connection bracket 34 and the rear side connection bracket 33, which makes the work troublesome. On the other hand, in the divided configuration as described above, the exhaust pipe 26 is placed on the front side of the front connection bracket 34 using the space between the first structure 35 and the second structure 36. After the movement, it is sufficient to attach the third structure 37, and the work can be easily performed.

  As shown in FIGS. 4, 7, 8, and 9, the lower-side exhaust pipe 30 is covered with cover members 39 and 40 on both left and right sides. As shown in FIG. 9, the right cover member 39 located on the right side (the grain tank side) has a substantially U-shaped cross section, and flange portions 41 are formed at both ends of the front and rear sides. As shown in FIG. 4, the left cover member 40 located on the left side (threshing device side) is formed in a substantially U-shaped cross section and extends in the vertical direction so as to cover the lower region on the left side in the lower side exhaust pipe 30. A vertically extending portion 40a and an obliquely extending portion 40b extending in an oblique direction so as to cover the upper region on the upper end side of the lower side exhaust pipe 30 are provided. Flange portions 42 are formed at the ends on both the front and rear sides of the vertically extending portion 40a.

  As shown in FIG. 9, the right cover member 39 is positioned on the right side of the lower exhaust pipe 30, and the left cover member 40 is positioned on the left side of the lower exhaust pipe 30. The mounting bracket 43 fixed to the outer peripheral surface of the lower-side exhaust pipe 30 is sandwiched and fastened, and is supported by the mounting bracket 43 by fastening bolts at two locations, upper and lower.

[Protective member]
When the detection accuracy of the vertical position of the horizontal feed screw conveyor 9B is low, such as when the detection accuracy of the vertical position sensor is low, for example, the horizontal feed screw conveyor 9B is temporarily raised from the home position for a while. In the case of lowering after only turning, there is a risk that the lateral feed screw conveyor 9B contacts the upper end of the exhaust pipe 26. Therefore, a protection member 44 that protects the upper end portion of the exhaust pipe 26 is provided.

  As shown in FIGS. 3, 4, 7, 8, and 9, the protection member 44 has a shape obtained by bending a round bar-like body into a substantially portal shape in a side view. The protection member 44 is supported by the right side wall 5 </ b> A of the threshing device 5 as a grain tank side portion in the threshing device 5. In other words, the lower end of the rear side of the protection member 44 is formed in a bifurcated shape and includes two rear divided leg portions 45 and 46. The two rear divided leg portions 45 and 46 are bolted to the rear connecting bracket 33, respectively.

  Similarly, the lower end portion on the front side of the protection member 44 is also formed in a bifurcated shape and includes two front divided leg portions 47 and 48. Of the two front split legs 47 and 48, the front split leg 47 on the threshing device side is bolt-connected to the third structural body 37 of the front connection bracket 34 at the lower end. Of the two front split legs 47 and 48, the other front split leg 48 is formed in a plate shape, and is bolted to the front connection bracket 34 (third structure 37) via a relay linking member 49. Has been.

  As shown in FIG. 9, the relay linking member 49 has a shape obtained by bending a plate material into an L shape in plan view, the lateral plate portion 49 a is bolted to the front connection bracket 34, and the front and rear plate portion 49 b is the other side. The front split leg 48 is bolted. The front-rear facing plate portion 49b is bolted together with the front flange portions 41 and 42 of the left and right cover members 39 and 40 and the mounting bracket 43 at two locations in a co-tightened state.

  As described above, the connecting brackets 33 and 34 on both the front and rear sides are connected to and supported by the right side wall 5A of the threshing device 5, so that the protection member 44 is connected via the connecting brackets 33 and 34 on the front and rear sides. It is the structure supported by the threshing apparatus 5. The front connection bracket 34 is configured to support the protective member 44 in addition to the cereal conveyor 16 and the exhaust pipe 26. With this configuration, the support structure is simplified by using the members also.

  The protection member 44 is provided in a state of extending upward from the place connected and supported by the connection brackets 33 and 34, and as shown in FIGS. It is bent towards the side. If description is added, it will be located in the threshing apparatus 5 side among the front side division leg parts 47 located in the threshing apparatus 5 side among the front side division leg parts 47 and 48 in the protection member 44 and the rear side division leg parts 45 and 46. The rear side split leg portion 45 extends upward from the connecting portion, and the upper side of the upper end portion thereof is bent toward the threshing device 5 side.

  As shown in FIG. 10, the protection member 44 is bent toward the threshing device 5 so as to bypass the upper side of the uppermost end portion of the exhaust pipe 26, and extends obliquely upward in the longitudinal direction of the body. . As shown in FIGS. 1, 7, 8, and 10, the protection member 44 is positioned below the upper end of the transverse feed screw conveyor 9 </ b> B stored in the home position.

  A welding nut 50 and a reinforcing member 51 made of a substantially U-shaped plate are integrally connected to the side of the third connecting body 37 of the front connecting bracket 34 opposite to the side to which the mounting bracket 38 is connected. It is prepared in the state to be done. In addition, the front and rear connecting brackets 33 and 34 are connected to each other by a belt-like reinforcing plate 52 in a state of being positioned on the right side (threshing device side) of the whipping conveyor 16. In this way, the support strength by the front connection bracket 34 is increased.

[Another embodiment]
(1) In the said embodiment, although it was set as the structure which supports the whipping conveyor 16, the exhaust pipe 26, and the protection member 44 by the connection bracket 34, respectively, the structure in which the connection bracket 34 supports only the whipping conveyor 16 may be sufficient, The connection bracket 34 may support the cereal conveyor 16 and the exhaust pipe 26.

(2) In the above embodiment, the protection member 44 is supported by the connection bracket 34 (support member) that supports the exhaust pipe 26. However, a support member different from the connection bracket 34 is provided, and the support member is provided. The protective member 44 may be supported on the base.

(3) In the above embodiment, the protective member 44 is configured to be supported by the side wall 5A of the threshing device 5 as a grain tank side portion of the threshing device, but instead of this configuration, the protection member 44 is positioned on the threshing device side. The supporting member may be supported by a fixing member fixed to the machine body frame 22, and the supporting structure may be changed as appropriate.

(4) In the above embodiment, the protective member 44 is positioned below the upper end of the lateral feed screw conveyor 9B stored in the home position on the inward side of the machine body. Not limited to this, the protective member 44 may be configured to protrude upward from the upper end portion of the lateral feed screw conveyor 9B.

(5) In the above embodiment, the exhaust outlet 27 of the exhaust pipe 26 is bent so as to open toward the threshing device 5 side, and the protective member 44 is configured such that the upper side portion is bent toward the threshing device 5 side. However, the exhaust outlet 27 may be opened in the longitudinal direction of the fuselage, and the protection member 44 may be configured to extend straight upward. The protective member 44 may have a shape that covers the entire circumference of the exhaust pipe 26.

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

5 Threshing device 5A Side wall (grain tank side part)
6 Grain tank 6a Inlet part 9 Grain discharging device 9A Vertical conveying part 9B Horizontal conveying part 20 Engine 26 Exhaust pipe 27 Exhaust outlet 34 Support member 44 Protection member X Horizontal axis Y1 Vertical axis

Claims (6)

Engine,
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 exhaust pipe extending vertically between the threshing device and the grain tank and exhausting exhaust from the engine to the outside;
A protective member for protecting the upper end of the exhaust pipe,
The said protection member is the combine currently supported by the said grain tank side part in the said threshing apparatus.   The combine according to claim 1, wherein the protective member is supported on a side wall of the threshing apparatus. A support member for supporting the exhaust pipe is supported by the grain tank side portion;
The combine according to claim 1 or 2, wherein the protection member is supported by the support member. Between the threshing device and the grain tank, a cerealing device is provided that lifts the grain from the lower part of the threshing device toward the inlet of the grain tank,
The combine according to claim 3, wherein an upper end portion of the cerealing device is supported by the support member in a state of being aligned with the exhaust pipe in the lateral direction of the machine body. A grain discharging device for discharging the grains stored in the grain tank to the outside is provided,
The grain discharging device is provided with a vertical conveying section extending upward from a lower rear portion of the grain tank, and a horizontal conveying section extending laterally from the upper end of the vertical conveying section,
The horizontal transport unit can be swung around the vertical axis, and can swing up and down around the horizontal axis so that the grain outlet provided in the tip portion moves in the vertical direction,
The exhaust pipe protrudes above the upper end of the threshing device,
The combine according to any one of claims 1 to 4, wherein the protection member is positioned below an upper end portion of the lateral conveyance unit that is stored at a home position on the inner side of the machine body. The upper end of the exhaust pipe is bent so that the exhaust outlet opens toward the threshing device side,
The said protection member is provided in the state extended upwards from the location currently supported by the said grain tank side part, and the location above the upper and lower intermediate part is bent toward the said threshing device side. The combine of any one of 5 to 5.

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