JP2008048704A - Combine harvester - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a combine harvester capable of drying wet materials by enabling to discharge heat of an exhaust gas outside so that the discharged heat is further supplied to a threshing part or the like. <P>SOLUTION: The combine harvester comprises a grain tank 17 storing unhulled rice after reaping, threshing and sorting, a discharge auger 21 set to be vertically and horizontally freely rotatable and discharging the unhulled rice from the grain tank 17, and an exhauster 41 whose one end is connected with an engine 34 mounted on the machine body and the other end is extended to between a threshing part 15 and the grain tank 17 and which comprises an exhaust gas silencer 42, a tail pipe 61 and the like, wherein the exhaust gas silencer 42 connected with an exhaust gas manifold 36 of the engine 34 at the upstream side of the exhauster 41 is internally installed in an engine room 32, and a tail pipe 61 connected with the exhaust gas silencer 42 is supported with supporters 82 and 83 set on the threshing part 15. <P>COPYRIGHT: (C)2008,JPO&INPIT

Description

  The present invention relates to a combine, and more particularly, to a technique for preventing interference between an exhaust device and a discharge auger piped on an upper part of a combine body.

  Conventionally, an exhaust device for a combine is piped from the engine to the rear side of the fuselage through the lower part of the fuselage, and exhaust gas generated by the engine is discharged behind the fuselage. The exhaust device includes an exhaust silencer that reduces exhaust noise, a tail pipe that exhausts exhaust gas, and the like (see, for example, Patent Document 1).

  However, when an exhaust device such as an exhaust silencer or a tail pipe is piped at the lower part of the machine body, mud or the like wound during traveling tends to be applied to the exhaust device. When mud or the like is applied to the exhaust device, mud or the like may be trapped and adhered to the exhaust silencer or the tail pipe, or mud or the like may enter the tail pipe. In particular, when the combine travels in a wet field, a large amount of mud or the like adheres to the exhaust device, and the intrusion of mud or the like into the exhaust device also increases, resulting in a decrease in the travel performance of the combine.

  For this reason, there is also a combine technology in which an exhaust device is piped on the upper part of the fuselage. As a combine equipped with such an exhaust device, for example, an exhaust silencer is provided in an engine room, and a tail pipe connected to the exhaust silencer. Is piped above the fuselage, and the rear part of the tail pipe is fixed to the upper part of the threshing part (see, for example, Patent Document 2). There is also a combine in which an exhaust pipe from the engine is piped above the fuselage, an exhaust silencer connected to the exhaust pipe is fixed to the upper part of the threshing portion, and a tail pipe is connected to the exhaust silencer.

According to the combine in which the exhaust device is piped on the upper part of the fuselage as described above, it is difficult for mud or the like wound up during traveling to get caught in the exhaust device, mud etc. Is prevented from entering. For this reason, it is possible to prevent a drop in the traveling performance of the combine due to the inclusion of mud or the like in the exhaust device or the intrusion of mud or the like.
JP 2005-261279 A Japanese Utility Model Publication No. 61-26130

However, in the conventional exhaust device, the surface temperature of the exhaust device becomes high due to the heat of the exhaust gas, so that the temperature around the engine room becomes high, and the warmed air is not easily discharged, so that it accumulates around the exhaust air. . On the other hand, in order to eliminate clogging due to wet materials, etc. with a whipped kernel, heat for drying the grain is required.
In view of such a problem, there is provided a combine that enables exhaust gas heat to be discharged to the outside, and further supplies the discharged heat to a threshing section or the like to allow drying of the wet material.

  The problems to be solved by the present invention are as described above. Next, means for solving the problems will be described.

  That is, in Claim 1, the Glen tank which stores the cuttings after cutting, threshing and sorting, the discharge auger which is arranged so as to be rotatable in the vertical and horizontal directions and discharges the baskets from the Glen tank, and one end An exhaust system composed of an exhaust silencer, a tail pipe, etc., connected to an engine mounted on the fuselage and having the other end extending between the threshing part and the glen tank. An exhaust silencer connected to the exhaust manifold of the engine on the upstream side of the exhaust device is built in the engine room, and a tail pipe connected to the exhaust silencer is supported by a support provided in the threshing portion.

  According to a second aspect of the present invention, the tail pipe extends upward from the engine room between the threshing portion and the grain tank, and the discharge port at the tip of the tail pipe is disposed in the vicinity of the upper end of the grain tank.

  According to a third aspect of the present invention, an outer air introduction portion is formed by externally connecting a base end portion on the tail pipe side having a larger outer diameter to the distal end of a muffler pipe communicating with the discharge side of the exhaust silencer. In which the base end portion on the tail pipe side is opened obliquely.

  As effects of the present invention, the following effects can be obtained.

  In claim 1, the surface temperature of the tail pipe is lowered by introducing the exhaust air from the radiator. It also prevents dust accumulation on the muffler pipe. Moreover, since it supports in the threshing part with few vibrations, durability of a tail pipe improves and assembly property improves. Further, since the durability of the tail pipe is improved, it is possible to use a light material.

  According to the second aspect of the present invention, the tip of the tail pipe does not get caught when stored in the garage. Further, by arranging the tail pipe upward, mud clogging of the tail pipe is prevented. Further, dust accumulation on the tail pipe is suppressed, and visual confirmation is facilitated even when dust accumulates.

  According to the third aspect, the amount of outside air introduced is increased to reduce the surface temperature of the tail pipe. In addition, the length of the surface facing the exhaust air from the radiator can be increased, the amount of outside air introduced is increased, and the surface temperature of the tail pipe is reduced. Moreover, it becomes possible to form a guide without adding a new member.

  Next, embodiments of the present invention will be described with reference to the drawings.

  The combine 11 according to the present invention will be described with reference to the drawings. 1 is an overall side view of the combine 11, FIG. 2 is a front view of the combine 11, FIG. 3 is a plan view of the combine 11, FIG. 4 is a simplified side view of the exhaust device 41, FIG. 5 is a simplified front view of the exhaust device 41, 6 is a simplified plan view of the exhaust device 41, FIG. 7 is a simplified side view of a connecting portion between the longitudinal feed auger 22 and the lateral feed auger 23, FIG. 8 is a view taken along the arrow P of the guard plate 90 in FIG. 10 is a plan view of the guard plate 90, FIG. 11 is a cross-sectional view of the guard plate 90, and FIG. 12 is (a) a plan view of a conventional outside air introduction portion 71 (b) an upstream end 62. FIG. 13 is a perspective view of the outside air introducing portion 71 when the upstream end portion 62 is notched in a stepped manner, and FIG. 14A is an upstream end portion 62. FIG. 15B is a side view of the outside air introduction portion when the V is opened in a V-shape, FIG. 15 is a front view of FIG. It is a perspective view of such an exhaust device 41 as viewed Ri.

  First, the overall configuration of the combine 11 will be described. As shown in FIGS. 1 to 3, the combine 11 is provided with a machine body (chassis) 13 on a crawler traveling device 12 that supports left and right crawlers, and an engine 34 on the front right side of the machine body 13. Is installed. A transmission case 31 for shifting the driving force of the engine 34 and transmitting it to the crawler traveling device 12 is disposed in front of the airframe 13. The transmission case axle is provided on the transmission case 31. Yes. Further, a cutting part 14 is provided at the front of the machine 13, and a sorting unit 16 is provided on the left side of the traveling direction in the upper part of the machine 13, and a threshing unit including a handling cylinder, a feed chain 15 a, and the like above the sorting unit 16. 15 is provided. A seat 19 and a cabin 18 are provided at the right front part of the upper part of the airframe 13, and a Glen tank 17 is provided at the right rear part of the airframe 13. A discharge conveyor 26 is disposed in the front-rear direction at the bottom of the Glen tank 17, and a discharge auger 21 is erected at the rear of the Glen tank 17. The grains stored in the grain tank 17 are conveyed rearward by a discharge conveyor 26, and discharged to a truck or the like from a discharge port 24 at the tip of the horizontal feed auger 23 via a vertical feed auger 22 and a horizontal feed auger 23 of the discharge auger 21. Is done. A guard member 81 that prevents interference between the tail pipe 61 and the discharge auger 21 is provided above the machine body 13. A guard plate 90 is attached to the lateral feed auger 23 of the discharge auger 21 at a location approaching the downstream end 63 of the tail pipe 61.

  As shown in FIG. 3, the engine 34 is mounted below the cabin 18 in front of the fuselage 13 of the combine 11, and the engine 34 is accommodated in an engine room 32. The engine room 32 includes an engine room cover (not shown) that covers the upper surface, front surface, and left and right side surfaces, and the rear surface includes an engine room rear frame 33. The engine room 32 is provided with an open portion (not shown) for taking in outside air for cooling on the right side, and an intake path in which an air cleaner, an intake silencer, and the like are arranged from the rear lower part of the cabin 18 to the engine 34. (Not shown) is formed.

  Next, the exhaust device 41 will be described. As shown in FIG. 4, the exhaust device 41 is connected to an exhaust manifold 36 of the engine 34, and exhausts exhaust gas after combustion to reduce exhaust sound accompanying combustion. The exhaust device 41 includes an exhaust silencer 42, a tail pipe 61, and an outside air introduction portion 71.

  The exhaust silencer 42 will be described. The exhaust silencer 42 is connected to the exhaust manifold 36 of the engine 34 to reduce exhaust noise. As shown in FIG. 4, the exhaust silencer 42 is a cylindrical body having a substantially elliptical cross section, and a silencer outlet pipe 43, which is an exhaust gas outlet, is provided near one side. The exhaust silencer 42 is disposed in the engine room 32 and is provided above the engine 34 at a position where the exhaust air from the cooling fan 35 hits. Since the exhaust silencer 42 is provided at a position where the exhaust air from the cooling fan 35 hits, the exhaust silencer 42 can be cooled and dust can be prevented from accumulating. Further, as shown in FIG. 5, the exhaust silencer 42 is disposed with its longitudinal direction facing the left-right direction of the fuselage 13 and offset to the left side of the fuselage 13 with respect to the exhaust manifold 36, and the silencer outlet pipe 43. Are connected to the left side in the direction of travel of the airframe 13.

Next, the tail pipe 61 will be described. The tail pipe 61 is connected to the downstream side of the exhaust silencer 42 and discharges exhaust gas from the engine 34. As shown in FIGS. 4 to 6, the overall shape of the tail pipe 61 extends from the upstream end 62, which is a portion connected to the silencer outlet pipe 43 of the exhaust silencer 42, toward the rear of the machine body 13, Next, it is bent toward the upper side of the fuselage 13 behind the penetration part of the engine room rear frame 33 and extends toward the left side of the fuselage 13, and then reaches between the grain tank 17 and the threshing part 15. By the way, the downstream end 63 of the tail pipe 61 is disposed in the vicinity of the front and rear of the machine 13 (the threshing part 15 or the Glen tank 17) in the horizontal direction toward the back of the machine body 13 and extending backward. The downstream end portion 63 bends at an angle β (FIG. 4) obliquely upward with respect to the horizontal plane in a side view, and has an angle α (see FIG. 6) obliquely left rearward (feed chain side) with respect to the front-rear direction in a plan view. ) It is bent. That is, the exhaust gas is piped so as to be exhausted from the downstream end 63 (exhaust port) to the upper left side of the machine body 13 and obliquely to the rear left side on the opposite side to the lateral feed auger 23.
Further, as shown in FIG. 15, the tail pipe 61 is provided such that the upper end of the discharge port of the downstream end 63 located at the highest position is lower than the lower end of the discharge auger 21. With this configuration, even if the rain protection sheet 100 is put on the entire body immediately after the end of the work (engine stop), the rain protection sheet 100 does not come into contact with the tail pipe 61, and the rain protection sheet 100 is provided. It will not burn you.

  As shown in FIG. 4, the tail pipe 61 includes an outer tube 64 and an inner tube 65. The inner pipe 65 is connected to the silencer outlet pipe 43 of the exhaust silencer 42 and is a part through which exhaust gas passes, and the outer pipe 64 is a part that forms a heat insulating layer between the inner pipe 65 and the inner pipe 65. The inner tube 65 and the outer tube 64 are each composed of a metal straight tube and an elbow, and the inner tube 65 is inserted into the outer tube 64. The inner tube 65 inserted into the outer tube 64 is fixed by fixing the inner tube fixing member to the outer surface of the inner tube 65 and the inner surface of the outer tube 64 by welding means or the like, and between the inner tube 65 and the outer tube 64. A predetermined gap is secured and fixed. A gap portion between the inner tube 65 and the outer tube 64 serves as a heat insulating layer. The gap communicates from the upstream end 62 to the downstream end 63 of the tail pipe 61. In this embodiment, the tail pipe 61 is a double pipe composed of the outer pipe 64 and the inner pipe 65, but it may be a single pipe consisting of only the inner pipe 65, or a pipe is provided on the outer side. Or more than triple tubes.

  The shape of the downstream end 63 of the tail pipe 61 is such that the end of the inner pipe 65 is positioned upstream of the end of the outer pipe 64, and the outer pipe is located at the downstream end 63 of the tail pipe 61. A difference is provided between the end positions of 64 and the inner pipe 65. Further, the end portion of the outer pipe 64 is obliquely cut and protruded so that the upper side becomes longer, so that rainwater or the like does not easily enter the tail pipe 61. Since there is a difference between the end positions of the outer pipe 64 and the inner pipe 65 at the downstream end 63 of the tail pipe 61, when the engine 34 is operated and exhaust gas is discharged from the downstream end of the inner pipe 65, A negative pressure is generated between the rear end of the inner tube 65 and the outer tube 64 due to the flow of the exhaust gas, and air is sucked from between the front end of the outer tube 64 and the front portion of the inner tube 65, A downstream air flow is generated in the gap with the outer tube 64. When the air flows, the inside of the gap is ventilated, the temperature rise of the air inside the gap is suppressed low, and the heat insulating effect between the inner pipe 65 and the outer pipe 64 is increased. For this reason, the rise in the surface temperature of the outer tube 64 can be suppressed to a low level, and even if a harness or the like is installed close to the tail pipe 61, the thermal influence on the harness or the like can be prevented. Further, it is possible to make it difficult for rainwater or the like to enter the tail pipe 61.

  The shape at the upstream end 62 of the tail pipe 61 on the engine room 32 side is such that the end of the inner pipe 65 protrudes upstream of the end of the outer pipe 64, and the upstream end of the tail pipe 61. In the portion 62, a difference is provided between the end positions of the outer tube 64 and the inner tube 65. Since the gap between the inner pipe 65 and the outer pipe 64 communicates with the outside air at the upstream end 62 of the tail pipe 61, rainwater or the like has entered from the downstream end 63 of the tail pipe 61. Even in this case, water is discharged from the upstream end 62. Therefore, it is possible to prevent rainwater or the like from entering the exhaust silencer 42 or the engine 34 through the gap between the inner pipe 65 and the outer pipe 64.

  Here, as shown in FIG. 3 and FIG. 6, in plan view, the tail pipe 61 has an angle α above the handling chamber cover of the threshing unit 15 near the center of the machine and to the left rear with respect to the moving direction of the machine. It is shaped so as to be discharged in the discharge direction (hereinafter referred to as discharge direction α), and the downstream end 63 of the tail pipe 61 is located near the center of the machine. That is, the tail pipe 61 is discharged in the discharge direction α from the downstream end 63 near the center of the machine. Further, as shown in FIG. 5, piping is performed so as to discharge at an angle γ (hereinafter referred to as a discharge direction γ) that is higher than the height when the handling chamber cover is pivoted upward and opened. It has a shape.

  Therefore, in order to discharge from the downstream end 63 near the center of the machine, as shown in FIG. 3, the dimension A to the machine periphery (here, the vicinity of the left rear corner of the machine) can be made long, and Since it is discharged in the discharge direction α, the exhaust gas can be discharged far from the operator, and the influence of the exhaust gas on the operator (specifically, exhaust gas is blown or soot adheres) can be reduced. The influence of the exhaust gas on the discharge auger and grain tank located on the right side of the machine can be reduced. In addition, since the exhaust gas is discharged above the height when the handling chamber cover is most opened, the handling chamber cover is not exposed to exhaust gas and can be prevented from being contaminated. The angle α in the discharge direction to the left side of the machine is preferably 30 degrees or less.

  Further, the outlet of the tail pipe is provided at a position lower than the discharge auger. By configuring in this way, as shown in FIG. 15, even when a cover for preventing rain is applied to this machine, the cover does not directly contact the tailpipe, so that the cover can be prevented from being damaged.

  Next, the outside air introduction part 71 will be described. The outside air introduction unit 71 introduces outside air into the inner pipe 65 of the tail pipe 61 and reduces the temperature of the exhaust gas by outside air. A silencer outlet pipe 43 of the exhaust silencer 42 is connected to the upstream end 62 of the tail pipe 61, and an outside air introduction portion 71 is formed at a connection portion between the exhaust silencer 42 and the tail pipe 61. When the exhaust gas passes through the inner pipe 65 when the engine 34 is operating, a negative pressure is generated in the outside air introduction part 71 due to the flow of the exhaust gas, and the outside air is sucked into the inner pipe 65 from the opening of the outside air introduction part 71.

The upstream end 62 of the tail pipe 61 may be configured to open obliquely as shown in FIG. Conventionally, as shown in FIG. 12A, the cross section of the upstream end 62 is provided parallel to the exhaust air from the radiator (perpendicular to the axis of the outlet pipe 43 and the tail pipe 61). Therefore, the efficiency of introducing the exhaust air from the radiator was poor. However, as shown in FIG. 12 (b), the exhaust air can be exhausted by opening the upstream end 62 obliquely with respect to the exhaust air from the radiator. It is possible to efficiently blow air into the tail pipe.
In addition, as shown in FIG. 13, the upstream end 62 is notched in a stepped manner, the overlapping portion of the upstream end 62 and the outlet pipe 43 is formed in a semi-cylindrical shape, and the opening side is directed toward the radiator fan side. And more cooling air can be guided into the tail pipe 61.
Moreover, it can also comprise as shown in FIG. That is, it is also possible to adopt a configuration in which an overlapping portion between the upstream end 62 and the outlet pipe 43 is opened in a substantially V shape toward the radiator fan side. With this configuration, it becomes possible to guide more cooling air into the tail pipe 61.

  As shown in FIG. 6, the outside air introduction portion 71 is provided in the engine room 32 close to the exhaust silencer 42 and is provided at a position where exhaust air from the cooling fan 35 is hit. Since the exhaust air from the cooling fan 35 always hits the outside air introduction unit 71, it is possible to introduce low-temperature air from the outside air introduction unit 71 and to prevent dust from collecting in the outside air introduction unit 71.

  As shown in FIG. 6, the direction in which the tail pipe 61 and the silencer outlet pipe 43 are connected is the front-rear direction of the body 13. By inserting the silencer outlet pipe 43 in a direction along the vibration direction of the engine 34, the vibration of the silencer outlet pipe 43 due to the vibration of the engine 34 matches the insertion direction, so that it contacts the inner pipe 65 of the tail pipe 61. It becomes difficult. In order to prevent interference between the silencer outlet pipe 43 and the tail pipe 61, the insertion direction of the silencer outlet pipe 43 is preferably a direction along a direction in which the vibration of the engine 34 is large.

  Further, since the outside air introduction part 71 is configured such that the silencer outlet pipe 43 provided in the exhaust silencer 42 is inserted into the tail pipe 61, and a gap is secured between the silencer outlet pipe 43 and the tail pipe 61. A flange for connecting the exhaust silencer 42 and the tail pipe 61 becomes unnecessary. Since the mass of the exhaust silencer 42 that is a vibrating body can be reduced by eliminating the need for a flange, and the vibration of the exhaust silencer 42 can be reduced, noise due to vibration can be reduced.

Next, support of the exhaust device 41 will be described. As shown in FIGS. 4 to 6, the tail pipe 61 is supported by the threshing portion 15 via support members 82 and 83. As described above, when the exhaust device 41 is piped and supported above the fuselage 13, soot and the like are hardly accumulated in the exhaust device 41. Moreover, in the support part in the threshing part 15 of the tail pipe 61, the space | interval of the tail pipe 61 and the threshing part 15 is ensured enough, and even if a harness, an oiling hose, etc. are arrange | positioned under the tail pipe 61, it is due to heat. I try to prevent the impact.
The support member 82 supports a vertical portion 61a extending in the vertical direction of the tail pipe. On the other hand, the support member 83 supports a lateral portion 61b extending in the horizontal direction of the tail pipe. By supporting in multiple places, it will be supported by the threshing part 15 more firmly. In the present embodiment, the support member supports the two places, but the structure may be supported at three or more places.

  Next, the discharge auger 21 will be described. As shown in FIG. 1, the discharge auger 21 has a longitudinal feed auger 22 and a lateral feed auger 23. As shown in FIG. 7, the base side of the lateral feed auger 23 is connected to the upper part of the vertical feed auger 22 so as to be rotatable in the vertical direction. A bracket 55 projects from the side of the vertical feed auger 22, and a bracket 56 projects from the side of the lateral feed auger 23. One end of a cylinder 51 as a vertical driving means is rotatably attached to the bracket 55, and the other end of the cylinder 51 is rotatably attached to the bracket 56. Due to the expansion and contraction of the cylinder 51, the discharge auger 21 is lifted up and down. Further, the transverse feed auger 23 is provided with a rotary potentiometer 53 as a vertical angle detection means, and the rotary potentiometer 53 detects the vertical angle of the discharge auger 21.

  As shown in FIG. 7, a spur gear 57 is fitted and fixed to the middle part of the longitudinal feed auger 22. An actuator 52 serving as a horizontal direction driving unit is provided on the machine body 13 side, and a spur gear 58 is provided on the rotation shaft of the actuator 52. The spur gear 57 and the spur gear 58 are engaged with each other, and when the actuator 52 is operated, the longitudinal feed auger 22 and the lateral feed auger 23 are integrally rotated in the horizontal direction. A rotary potentiometer 54 as a horizontal angle detecting means is provided coaxially with the spur gear 58. The horizontal angle of the discharge auger 21 is detected by the rotary potentiometer 54. The vertical angle detecting means and the horizontal angle detecting means can use rotational angle detecting means such as a resolver and a rotary encoder in addition to a rotary potentiometer.

  Next, the guard member 81 will be described. As shown in FIGS. 1 to 6 and 8, a guard member 81 is provided above the fuselage 13 of the combine 11. The guard member 81 is a member that prevents interference between the tail pipe 61 and the discharge auger 21 without the discharge auger 21 coming into contact with the tail pipe 61 when the discharge auger 21 approaches the tail pipe 61. As for the mounting position and shape of the guard member 81, the vertical and horizontal angles of the discharge auger 21 corresponding to the position where there is a possibility of interference with the tail pipe 61 are obtained. Before entering, the lateral feed auger 23 is in a position and a shape where it abuts against the guard member 81 before the tail pipe 61.

  Specifically, the guard member 81 is configured by bending a metal pipe, a rod-like member, or a strip plate-like member into a substantially inverted U shape. As shown in FIG. 4, one end of the pipe is at a position below the rear end of the tail pipe 61, and as shown in FIG. 6, at a position away from the rear end of the tail pipe 61 by a predetermined length so that exhaust is not directly applied. The frame is fixed to a frame between the grain tank 17 and the threshing portion 15 and extends vertically from the frame toward the upper side of the machine body 13. Then, as shown in FIG. 5, the lateral guard member 81 a is bent from a position substantially the same height as the rear end of the tail pipe 61 and bent toward the left rear side of the machine body 13. Forming. Next, when the rear part of the horizontal guard member 81a reaches substantially the same height as the upper end of the Glen tank 17, it bends downward and extends in the vertical direction to form a vertical guard member 81b. If the vertical guard member 81b is extended downward as it is, it hits the threshing portion 15. Therefore, the vertical guard member 81b is bent into a substantially crank shape in a front view and is extended downward as a substantially straight shape in a plan view. The lower end is fixed to the provided mounting base.

  Thus, the guard member 81 is disposed on the right rear side of the exhaust device 41, and the lateral guard member 81a is disposed at a position higher than the upper end of the downstream end portion 63 of the tail pipe 61. Here, as shown in FIGS. 4 and 8, the tail pipe 61 has a shape that is piped so as to be discharged at an angle β (hereinafter, referred to as a discharge direction β) upward in the horizontal direction of the machine body in a side view. The guard member 81 is disposed in parallel with the discharge direction β of the tail pipe 61. Specifically, the longitudinal axis direction of the lateral guard member 81a of the guard member 81 and the discharge direction β of the tail pipe 61 are arranged in parallel. Further, as shown in FIG. 6, the dimension B is separated from the downstream end 63 of the tail pipe 61 to the guard member 81 (vertical guard member 81b) in the discharge direction β in plan view.

  Therefore, as shown in FIG. 8, the exhaust gas is discharged from the downstream end 63 of the tail pipe 61 in the discharge direction β, but this exhaust gas does not directly reach the guard member 81. On the other hand, when the lateral auger 23 of the discharge auger 21 is rotated, the lateral auger 23 is brought closest to the guard member 81, that is, the lateral auger 23 is moved to the auger storage position (the solid line shown in FIG. 8). ) To the upper left along the horizontal guard member 81a, the horizontal feed auger 23 moves in parallel with the discharge direction β, and even if it is the closest contact position between the horizontal guard member 81a and the vertical guard member 81b. The lateral feed auger 23 is at a position separated by a dimension B or more. (The two-dot difference line shown in FIG. 8).

  Moreover, the guard member 81 is arrange | positioned in parallel with the discharge direction (alpha) of the tail pipe 61, as shown in FIG. That is, as described above, the guard member 81 has a shape that is substantially one letter in plan view, and the guard member 81 is disposed in parallel with the discharge direction α of the tail pipe 61 in plan view. For this reason, the guard member 81 can be arrange | positioned compactly on the body 13, and the space on the body 13 can be used effectively.

  Next, the guard plate 90 will be described. As shown in FIGS. 8 and 11, the guard plate 90 has a shape in which a rectangular metal plate is bent and a cross-sectional shape is formed in a substantially C shape so as to cover a substantially lower half surface of the lateral feed auger 23. is there. The guard plate 90 may be configured in a cylindrical shape so as to cover the entire outer periphery of the lateral feed auger 23. The guard plate 90 is coated with black heat-resistant coating so that dirt on the surface of the guard plate 90 is not noticeable even if soot contained in the exhaust gas adheres to the guard plate 90. Note that not only the guard plate 90 but also the entire outer surface of the lateral feed auger 23, or the color in the vicinity of the downstream end 63 of the tail pipe 61 when the lateral feed auger 23 is housed is black or a color close to a heel. Thus, the dirt on the surface of the guard plate 90 can be made less noticeable.

  The guard plate 90 is attached to the lateral feed auger 23 of the discharge auger 21. Specifically, the guard plate 90 is a location near the downstream end 63 of the tail pipe 61 of the lateral feed auger 23 at the position where the lateral feed auger 23 is housed (above the downstream end 63). The guard plate 90 is positioned between the lateral feed auger 23 and the guard member 81 so that the bottom surface of the guard plate 90 faces the downstream end 63 of the tail pipe 61. The shape of the guard plate 90 is not limited to the present embodiment, and it is sufficient if the vicinity of the downstream end 63 of the tail pipe 61 can be covered.

  Here, as shown in FIG. 8, there are a plurality of (six in this embodiment) high nuts (or six in this embodiment) at the mounting position of the guard plate 90 of the transverse feed auger 23 at a predetermined angle (approximately 90 degrees) in the radial direction. Bolts) 91, 91... Are fixed by welding or the like. Similarly, bolt holes are opened at positions facing the high nuts 91, 91... Of the guard plate 90. That is, six high nuts 91, 91,... Are fixed to the lateral feed auger 23 by welding or the like at positions facing the front end portion and the rear end portion of the guard plate 90. On the other hand, bolt holes are formed in the guard plate 90 at positions corresponding to the high nuts 91, 91,. The bolt holes of the guard plate 90 and the high nuts 91, 91,... Of the lateral feed auger 23 are aligned with each other, and the bolts 92, 92,. It is done. The method of attaching the guard plate 90 is not limited to the present embodiment, and it is sufficient that the guard plate 90 can be fixed to the lateral guard member 81a.

  By attaching in this way, as shown in FIG. 11, the guard plate 90 is attached to the outer peripheral surface of the lateral feed auger 23 while being separated by the length of the high nut 91, and the guard plate 90 and the lateral feed auger 23 are attached. A gap 93 is formed between the two. For this reason, a gap 93 is formed between the guard plate 90 and the lateral feed auger 23 and can be insulated from both, and heat conduction from the guard plate 90 to the lateral feed auger 23 is reduced. A heat insulating material is interposed between the guard plate 90 and the outer peripheral surface of the lateral feed auger 23, or a heat insulating material that also serves as a heat-resistant buffer member is directly attached to the outer peripheral surface of the lateral feed auger 23. It may be a configuration.

  8 and 10, the lateral feed auger 23 of the discharge auger 21 may approach the guard member 81 depending on the operation. In other words, the lateral feed auger 23 can approach the upper side of the horizontal guard member 81a and the side of the vertical guard member 81b. Here, from the downstream end 63 of the tail pipe 61, as shown in FIGS. When the exhaust gas is discharged in the direction of the arrow, it is possible to prevent the exhaust gas from being blocked by the guard plate 90 and being applied to the lateral feed auger 23 of the discharge auger 21. Further, since the guard plate 90 is mounted so as to be positioned between the lateral feed auger 23 and the guard member 81, the guard plate 90 hits the guard member 81, and the lateral feed auger 23 of the discharge auger 21 is deformed. Is prevented.

  As described above, the combine 11 according to the present embodiment includes the Glen tank 17 that stores the soot, the discharge auger 21 that is disposed so as to be rotatable in the vertical and horizontal directions, and discharges the soot from the Glen tank 17, An exhaust device 41 composed of an exhaust silencer 42, a tail pipe 61, and the like, one end of which is connected to the engine 34 mounted on the airframe and the other end is extended between the threshing unit 15 and the glen tank 17. The exhaust silencer 42 connected to the exhaust manifold 36 of the engine 34 on the upstream side of the exhaust device 41 is built in the engine room 32, and the tail pipe 61 connected to the exhaust silencer 42 is threshed. It is supported by support tools 82 and 83 provided in the section 15. By comprising in this way, the surface temperature of a tail pipe is reduced by introducing the exhaust air from a radiator. It also prevents dust accumulation on the muffler pipe. Moreover, since it supports in the threshing part with few vibrations, durability of a tail pipe improves and assembly property improves. Further, since the durability of the tail pipe is improved, it is possible to use a light material.

  The tail pipe 61 extends from the engine room 32 upward between the threshing portion 15 and the grain tank 17, and a discharge port at the tip of the tail pipe 61 is arranged in the vicinity of the upper end of the grain tank 17. is there. By configuring in this way, the tip of the tail pipe is not caught when stored in the garage. Further, by arranging the tail pipe upward, mud clogging of the tail pipe is prevented. Further, dust accumulation on the tail pipe is suppressed, and visual confirmation is facilitated even when dust accumulates.

  Further, a base end portion 62 on the tail pipe 61 side having a large outer diameter is externally connected to a tip end of a muffler pipe 43 communicating with the exhaust side of the exhaust silencer 42 to form an external air introduction portion 71. The base end portion 62 on the tail pipe 61 side in the portion 71 is opened obliquely. With this configuration, the amount of outside air introduced is increased and the surface temperature of the tail pipe is reduced. In addition, the length of the surface facing the exhaust air from the radiator can be increased, the amount of outside air introduced is increased, and the surface temperature of the tail pipe is reduced. Moreover, it becomes possible to form a guide without adding a new member.

The whole side view of the combine 11. FIG. The front view of the combine 11. FIG. The top view of the combine 11. FIG. FIG. 6 is a simplified side view of the exhaust device 41. The front simplified view of the exhaust device 41. FIG. FIG. 3 is a simplified plan view of the exhaust device 41. The side surface simplification figure of the connection part of the vertical feed auger 22 and the horizontal feed auger 23. FIG. The arrow P figure of the guard board 90 in FIG. The side view of the guard board 90. FIG. The top view of the guard board 90. FIG. Sectional drawing of the guard board 90. FIG. (A) Plan view of conventional outside air introduction section 71 (b) Plan view of outside air introduction section 71 when the upstream end 62 is opened obliquely. The perspective view of the external air introduction part 71 at the time of notching the upstream edge part 62 to a step. (A) Side view (b) Front view of the outside air introduction part when the upstream end 62 is opened in a V shape. The perspective view of the exhaust apparatus 41 grade | etc., Seen from the P direction of FIG.

Explanation of symbols

DESCRIPTION OF SYMBOLS 11 Combine 13 Airframe 15 Threshing part 17 Glen tank 21 Discharge auger 34 Engine 41 Exhaust device 61 Tail pipe 63 Downstream side end 90 Guard plate 93 Crevice

Claims (3)

Glen tanks that store the harvested, threshed, and sorted straw,
A discharge auger disposed so as to be rotatable in a vertical direction and a horizontal direction, and discharging the soot from the Glen tank;
An exhaust system composed of an exhaust silencer, a tail pipe, etc., with one end connected to the engine mounted on the fuselage and the other end extending between the threshing section and the Glen tank. And
An exhaust silencer connected to the exhaust manifold of the engine upstream of the exhaust device is provided in the engine room, and a tail pipe connected to the exhaust silencer is supported by a support provided in the threshing portion. .   The tail pipe extends from the engine room upward between the threshing portion and the Glen tank, and a discharge port at the tip of the tail pipe is disposed in the vicinity of the upper end of the Glen tank. Combine. A base end portion on the tail pipe side having a large outer diameter is externally connected to the tip end of the muffler pipe communicating with the exhaust side of the exhaust silencer to form an outside air introduction portion, and a base on the tail pipe side in the outside air introduction portion is formed. The combine according to claim 1, wherein the end portion is opened obliquely.

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