JPWO2006011210A1 - Combine - Google Patents

Abstract

An object of the present invention is to prevent small dust from being sucked from the cooling air suction unit. Therefore, in the present invention, a threshing unit for threshing a cut grain culm, a sorting unit for sorting grains threshed in the threshing unit, and a prime mover unit for driving the threshing unit and the sorting unit are provided. The exhaust gas of the engine provided in the prime mover section is discharged through the exhaust flow passage forming body, and in the combine with the muffler provided in the middle portion of the exhaust flow passage forming body, the exhaust flow passage forming body located on the downstream side of the muffler. While the cooling air suction part is provided in the above, the pre-fan is provided in the selection part, and the cooling air suction part is arranged in the vicinity of the pre-fan. Therefore, the cooling air in the state where the small dust is sucked by the pre-fan can be sucked from the cooling air suction portion to cool the exhaust gas, and the small dust is not sucked.

Description

  The present invention relates to a combine.

  Conventionally, as one form of combine, there is one in which exhaust gas of an engine provided in a prime mover section is discharged through an exhaust flow passage forming body and a muffler is provided in a midway portion of the exhaust flow passage forming body (for example, a Japanese special feature). See Kaihei 10-164959).

  In the above-mentioned combine, although the muffler can muffle the noise, there is a problem that the high temperature exhaust gas is directly discharged to the outside of the machine.

  Therefore, it is conceivable to provide a cooling air intake part in the middle of the exhaust flow path forming body to suck the cooling air from the cooling air intake part to cool the exhaust gas, but it is smaller than the cooling air intake part. When the dust is inhaled, the dust may burn due to the exhaust gas having a high temperature to cause a fire.

  Therefore, in the present invention, a threshing unit for threshing the cut grain culm, a sorting unit for sorting the grains shredded in the threshing unit, and a prime mover unit for driving these threshing unit and the sorting unit, The exhaust gas of the engine installed in the engine part is discharged through the exhaust flow passage forming body, and in the combine with the muffler provided in the middle part of the exhaust flow passage forming body, the exhaust flow passage forming is located on the downstream side of the muffler. The present invention provides a combine characterized in that a cooling air intake part is provided in the body, a pre-fan is provided in the selection part, and the cooling air intake part is arranged in the vicinity of the pre-fan.

The side view of the combine concerning this invention. The side surface explanatory view showing the functional section composition on the machine frame of the combine. Side surface explanatory drawing of the threshing part and the selection part of the combine. Side view explanatory drawing of a threshing part. The front view of the threshing part. The development top view of a receiving net. The partial notch front explanatory drawing of the threshing part. FIG. 3 is a partially cutaway plan view of the sorting body. Explanatory drawing which shows the top view (a) and side view (b) of a shield. Plane|planar explanatory drawing of a motor|power_engine part and a selection part. The side view explanatory drawing of an exhaust flow path formation body. Explanatory drawing which shows the top view (a) and side view (b) of a side divider. Explanatory drawing which shows the top view (a) and side view (b) of a fuel tank.

  1 and 2 is a combine according to the present invention, in which the combine A is provided with a body frame 2 on a pair of left and right crawler type traveling portions 1, 1 and a left front end portion of the body frame 2 is provided. The mowing unit 4 and the transporting unit 5 are attached to the upper and lower parts via the mowing frame 3 so as to be able to move up and down, and the grain culm transferring unit 6, the threshing unit 7, and the sorting unit 8 are arranged on the left front part of the machine body frame 2. While the straw processing unit 9 is arranged in the rear part, the driving unit 10 is arranged in the front part on the right side of the machine body frame 2, and the prime mover unit 11 is arranged in the lower position of the driving unit 10. The dustproof part 12 is arranged at the right side position (outside position) of the operating part 10, the intake part 13 is provided at the rear position of the operating part 10, and the grain storage part 14 is provided at the rear position of the intake part 13. Are installed.

  In this way, the grain culm is cut by the reaping unit 4, the culled grain culm is conveyed by the conveying unit 5 to the grain culm transfer unit 6 located at the upper rear side, and the grain culm is transferred to the grain culm transfer unit 6 to transfer the same grain culm. The culm transfer section 6 sandwiches the grain culm roots, and the tip of the culm is transferred to the rear side while being inserted into the threshing section 7.

  At this time, the tips of the grain culms are threshed by the threshing unit 7, and the threshed grains are sorted by the sorting unit 8 so that only the clean grain is transported to and stored in the grain storage unit 14. There is.

  The threshed grain culms are conveyed as straw to the straw processing unit 9, and the straw processing unit 9 shreds and discharges the straw.

  Here, in the present embodiment, as shown in FIGS. 1 and 12(a) and (b), one side (the left side in the present embodiment) of the reaper 4 is connected to one side of the body frame 2 (the main side). (In the embodiment, the left side) The side divider 80 is bulged outward toward the rear end, and the side divider 80 guides the uncut grain culm backward while separating it from the machine body. The configuration of the side divider 80 will be described with reference to FIGS. 12A is a plan view of the side divider 80, and FIG. 12B is a side view of the side divider 80.

[Explanation of Side Divider 80]
That is, as shown in FIGS. 12(a) and 12(b), the side divider 80 includes the front divider forming body 81 arranged on one side (the left side in the present embodiment) of the reaper 4 and the body frame 2 A rear divider forming body 82 arranged on one side (left side in the present embodiment) of the intermediate portion, and an intermediate divider forming body 83 arranged between the front divider forming body 81 and the rear divider forming body 82. Therefore, the intermediate part divider forming body 83 relays the uncut culm guided along the front part divider forming body 81 to the rear part divider forming body 82.

  As shown in FIGS. 12A and 12B, the front divider forming body 81 is formed of a forming body piece 84 and a supporting piece 85 that supports the forming body piece 84.

  The forming body piece 84 is formed by bending a rod-shaped piece extending in the front-rear direction outwardly in a convex arc shape, and an axial line in the front-rear direction via the front pivot support piece 86 at the left front part of the mowing frame 3. The front end portion 84a is pivotally connected to the front end portion 84a by means of the front pivot pin 87, and the rear end portion 84b is arranged laterally of the left front portion of the body frame 2.

  The support piece 85 is formed by bending a rod-shaped piece extending in the front-rear direction outwardly in a convex arc shape, and is directed to the middle part on the left side of the mowing frame 3 via the rear pivot support piece 88 in the rear part. The front end portion 85a is pivotally supported and connected by the support pin 89, and the front end portion 85a and the rear end portion 85c are continuously provided along the inner side surface of the forming body main piece 84 to be integrated.

  In this way, the front divider forming body 81 is located at the use position (a) protruding outward from the mowing part 4 and the storage position (b) that is flipped up along the side surface of the mowing part 4. It is said that it can be changed.

  Further, as shown in FIGS. 12(a) and 12(b), the rear divider forming body 82 supports the forming body piece 90 extending in the front-rear direction and the front and rear portions of the forming body piece 90. It is formed of rear support pieces 91 and 92.

  The formed body piece 90 is formed by bending inward a front end portion 90a and a rear end portion 90b of a straight rectangular pipe piece extending in the front-rear direction. 90c is halfway.

  The front support piece 91 is formed in a rod shape extending in the left-right direction, and the outer end portion 91a is continuously connected to the front end portion 90a of the forming body main piece 90, while the cylinder provided in the left front portion of the machine body frame 2. The inner end portion 91b is slidably inserted into the front sliding guide body 93 in the shape of a circle.

  The rear support piece 92 is formed in a rod shape extending in the left-right direction, and the outer end portion 92a is connected to the midway portion 90c of the forming body main piece 90, while the rear support piece 92 has a cylindrical shape provided on the left rear portion of the machine body frame 2. The inner end portion 92b is slidably inserted into the rear sliding guide body 94.

  In this way, the rear divider forming body 82 laterally slides (sideways slides) between the use position (c) projecting outward from the machine body frame 2 and the storage position (d) close to the machine body frame 2. It can be moved freely and its position can be changed.

  Moreover, the rear divider forming body 82 has a strong structure so as to function also as a step on which an operator can ride and work at the use position (c).

  In addition, as shown in FIGS. 12(a) and 12(b), the intermediate portion divider forming body 83 includes a forming body piece 95 extending in the front-rear direction and a front/rear portion supporting the front/rear portion of the forming body piece 95. It is formed of rear support pieces 96 and 97.

  The forming body main piece 95 is formed by bending a rod-shaped piece extending in the front-rear direction outwardly in a convex arc shape, and is arranged close to the body frame to approximately the same position as the rear divider forming body 82. The intermediate portion 95a is disposed above the rear end portion 84b of the forming body piece 84 of the front divider forming body 81 and the front end portion 90a of the forming body book piece 90 of the rear divider forming body 82, and is flat with these. As seen in a vertical state in a superposed state, at least in a plan view, the forming body pieces 84, 90, 95 of the respective divider forming bodies 81, 82, 83 are continuous in the front-rear direction, and the front divider. The uncut culm that is guided along the forming body 81 can be relayed to the rear divider forming body 82.

  Moreover, both of the front divider forming body 81 and the rear divider forming body 82 take any posture between the use position (a) (c) and the storage position (b) (d), at least in a plan view. The forming body piece 84 of the front divider forming body 81 and the forming body piece 95 of the middle divider forming body 83 are partially polymerized, and the forming body piece 95 of the middle divider forming body 83 and the rear divider formation are formed. The formed body pieces 90 of the body 82 are arranged so as to partially overlap with each other.

  The front support piece 96 is formed in a rod shape extending in the left-right direction, and the outer end portion 96a is connected to the front portion of the forming body main piece 95 and the inner end portion 96b is fixed to the front portion of the machine body frame 2. It is set up.

  The rear support piece 97 is formed in a rod shape extending in the left-right direction, and has an outer end portion 97a continuously connected to a middle portion of the forming body main piece 95 and an inner end portion 97b fixed to a front portion of the machine body frame 2. is doing.

  In this way, the intermediate divider forming body 83 can relay the uncut grain culm guided along the front divider forming body 81 to the rear divider forming body 82. The uncut grass culm guided along the divider forming body 81 can be smoothly and reliably taken over by the rear divider forming body 82, and the uncut culm can be caught without being smoothly taken over by the rear divider forming body 82. It is possible to reliably prevent such a conventional problem.

  At this time, since the intermediate portion divider forming body 83 is arranged close to the body frame 2 and fixed to the same position as the rear divider forming body 82 arranged at the storage position (d), the middle portion divider forming body 83 is fixed. It is only necessary to change the positions of the body 81 and the rear divider forming body 82 to the use position (a)(c) and the storage position (b)(d), respectively, as required, and it is easy to operate with the conventional side divider. In addition to being unchanged, the uncut culm can be smoothly and reliably guided backward.

  Moreover, both the front divider forming body 81 and the rear divider forming body 82 are at least in plan view regardless of the postures between the use positions (a) and (c) and the storage positions (b) and (d). In the above, the forming body piece 84 of the front divider forming body 81 and the forming body piece 95 of the middle divider forming body 83 are partially polymerized, and the forming body piece 95 of the middle divider forming body 83 and the rear divider are formed. Since the uncut grass culm is arranged such that the formed body pieces 90 of the formed body 82 partially overlap with each other, the uncut grain culms are formed body pieces 84 of the front divider formation body 81 → formation of the intermediate divider formation body 83. The body book piece 95 is smoothly and reliably guided rearward along the body book piece 90 of the rear divider body 82.

  As a result, it is possible to reliably prevent the occurrence of the problem that the uncut grain culms are caught at the joint portions of the formed body pieces 84, 90, 95 and are not smoothly guided.

  Below, each structure of the threshing part 7, the selection part 8, the straw processing part 9, the operation part 10, and the motor|power_engine part 11 which were mentioned above is demonstrated more concretely.

[Explanation of threshing section 7]
That is, in the threshing unit 7, as shown in FIG. 4 and FIG. 5, the handling cylinder 21 is arranged in the handling chamber 20, and the receiving net 22 is stretched just below the handling cylinder 21. As shown in FIG. 7, a treatment chamber 38 is provided adjacent to the right side of the treatment chamber 20, and a treatment cylinder 23 is disposed in the treatment chamber 38. It is located at the right rear position.

  The handling body 21 has a large number of handling teeth 25 projecting from the outer peripheral surface of a cylindrical handling body 24 whose axis is oriented in the front-rear direction, and front and rear ends of the handling body 24 at the front and rear ends, respectively. The walls 26 and 27 are provided, and the handling barrel support shaft 28 whose axis is oriented in the front-rear direction is passed through the center of the front and rear end walls 26 and 27, and the front and rear walls 29 and 30 of the handling room 20 are provided. It is rotatably installed between the handling body support shafts 28.

  Further, the receiving net 22 is stretched just below the handling barrel main body 24 via a receiving net support frame 31 formed in a semi-circular shape in a front view, and as shown in FIG. The mesh boundary line portion 32 is formed at two half positions, and the size of the mesh 34 of the rear net-receiving forming body 33 located rearward of the mesh boundary line portion 32 is set to the front of the mesh boundary line portion 32. It is formed to be larger than the size of the mesh 36 of the positioned front net-receiving forming body 35. Reference numeral 37 is a cutout portion that communicates with the processing cylinder 23.

  That is, the horizontal width W1a of the mesh 34 of the rear net-forming member 33 is formed to be substantially the same as the horizontal width W2a of the mesh 36 of the front net-forming member 35, and the front and rear of the mesh 34 of the rear net-forming member 33. The width W1b is 1.2 to 1.5 times larger than the front-rear width W2b of the mesh 36 of the front net-receiving forming member 35.

  Here, the mesh boundary line portion 32 is arranged in front of the starting end portion of the chaff sheave 54 provided in the sorting body 50, which will be described later, as shown by the chain line P in FIG. The front and rear feed pans 52 and 53 provided in the sorting body 50 receive the leaking grains, and the front and rear feed pans 52 and 53 perform specific gravity sorting, and the rear net formation body The grains leaking through 33 are wind-sorted by the sorting wind from the second Karako 57 as a pre-fan that flows upward from below the chaff sheave 54.

  In this way, single grains are allowed to leak onto the front/rear feed pans 52, 53 by the front receiving net forming body 35, and the single grains are sorted by specific gravity by the front/rear feed pans 52, 53. The rear net-forming body 33 allows the sorting particles to be wind-sorted by the sorting wind from the second Karako 57 that flows upward from below the chaff sheave 54, so that the sorting efficiency can be improved. it can.

  In addition, as shown in FIGS. 3, 7 and 8, between the handling drum 21 provided in the threshing unit 7 and the sorting body 50 provided in the sorting unit 8 which will be described below immediately below the handling barrel 21. A grain flow guide 40 is provided.

  That is, as shown in FIGS. 3, 7, and 8, the grain flow-down guide body 40 includes a guide body main piece 41 formed in a rectangular plate shape extending in the front-rear direction, and an upper edge of the guide body main piece 41. And the mounting edge portion 42 formed in the section.

  Then, the mounting edge portion 42 is attached to the lower portion of the right side wall 20a of the handling chamber 20 by the mounting bolts 43, and the guide body main piece 41 is slanted downward toward the inside, and the lower end of the guide body main piece 41 is attached. The edge portion 41a is arranged above the right side portion of the sorting body 50 described later, the grain flow-down guide surface 41b is formed on the upper surface of the guide body main piece 41, and along the grain flow-down guide surface 41b, the treatment is performed. The grains that have been threshed by the barrel 21 and leaked are guided so as to flow down toward the center of the sorting body 50.

  Moreover, the rear end edge portion 41c of the main guide body piece 41 is located near the rear end portion of the rear feed pan 53 or near the front end portion of the chaff sheave 54.

  Further, the front and rear edge portions of the guide body piece 41 are folded back at a substantially right angle to form reinforcing/connecting pieces 41c, 41c, and the reinforcing/connecting piece 41c at the front part is the front wall 29 of the handling chamber 20. Connected to.

  In this way, the grain flow-down guide surface 41b of the grain flow-down guide body 40 arranged between the handling cylinder 21 and the sorting body 50 sorts the grains that are threshed by the handling cylinder 21 and leak out. Since it can be guided to flow down toward the center of the body 50, the sorting efficiency by the sorting body 50 can be secured well even when the amount of grains is large.

  At this time, the grain flow-down guide body 40 is formed in a plate shape extending in the front-rear direction, the grain flow-down guide surface 41b is formed on the upper surface, and the grain flow-down guide surface 41b is located at the central portion side of the sorting body 50. Since the grain flow-down guide body 40 is configured to be compact and has a down-sloping inclined surface, it is possible to increase the degree of freedom in the arrangement position of the grain flow-down guide body 40. Thus, it can be easily arranged at a required position.

  Moreover, since the rear end edge portion 41c of the guide body main piece 41 is located near the rear end portion of the rear feed pan 53 or near the front end portion of the chaff sheave 54, the front feed pan 52 and the rear feed pan 52 are disposed. The grain can be flowed down and guided by the grain flow-down guide surface 41b over the entire width of 53.

  Further, in the middle of the guide body piece 41, there is formed a notch 44 for communication which is formed by notching in a trapezoidal shape upward from the lower end, and the notch 44 for communication is the handling chamber 20. The second reducing port 45 formed in the lower part of the right side wall 20a of the No. 2 is communicated in the left-right direction, and the second grain is returned from the No. 2 reducing port 45 through the communication notch 44 to the sorting body 50. I have to.

[Explanation of the selection unit 8]
That is, as shown in FIGS. 3, 4 and 8, the sorting unit 8 arranges the sorting body 50 below the handling cylinder 21 and the processing cylinder 23 provided in the threshing unit 7 so as to swing back and forth. The sorting body 50 receives the threshed grains that are threshed and supplied by the handling cylinder 21 and the processing drum 23, and collects the first grain (first grain) and the second grain for re-sorting (second grain). (Grain).

  Further, the sorting body 50 has a front feed pan 52 and a rear feed pan 53 arranged at the front part of the sorting frame body 51 with a step, and a chaff sheave 54 is arranged at the rear position of the rear feed pan 53. The straw rack 55 is arranged at the rear position of the chaff sheave 54, while the grain sheave (not shown) is arranged at the lower position.

  In addition, a second Karano 57 as a pre-fan is arranged below the front feed pan 52, and the second Karaku 57 acts as a sorting wind between the steps h of the front and rear feed pans 52, 53. The first Karasu 58 as a main fan is arranged below the rear feed pan 53 so that the sorting wind is applied to the rear part of the sorting body 50 located behind the rear feed pan 53. ..

  In addition, below the chaff sheave 54, the first object receiving gutter 59 that extends in the left-right direction and receives the first object is arranged. The material is collected by a material collecting body (not shown) and conveyed to the threshing storage unit 14.

  Further, a second object receiving trough 60 extending in the left-right direction to receive the second object is disposed below the Straw rack 55, and the second object in the second object receiving trough 60 is , A second reduction product (not shown) collects the product, reduces it on the front feed pan 52, and re-sorts it by the sorting body 50.

  That is, the tip portion of the second reducing body is connected to the second reducing port 45 opened on the right side wall 20a of the handling chamber 20 as described above, and is connected to the second feed port 52 through the second reducing port 45 on the front feed pan 52. I try to release and drop the number to return. In FIG. 8, reference numeral 62 denotes a guide piece, and the second item returned by the guide piece 62 is transferred and guided to the center side.

  In this way, since the second product is reduced and re-sorted on the front feed pan 52, the grains and dust that are the second product are dispersed on the front feed pan 52, Furthermore, when these are dropped onto the rear feed pan 53, the sorting air from the second Kara 57 is applied between the steps h of the front and rear feed pans 52, 53 to remove the grains and dust. It is possible to surely sort and improve the sorting performance. As a result, the recovery rate of the first product can be improved.

  In addition, as shown in FIG. 9, the above-mentioned chaff sheave 54 is laterally spaced between the left and right side walls 51a, 51a of the selection frame body 51 at a distance in the front-rear direction and is swingable in the front-rear direction. Thus, the distance between the chaff sheaves 54, 54 adjacent to each other in the front-rear direction can be adjusted.

  That is, as shown in FIG. 9( b ), the chaff sheave 54 pivotally supports the left and right side walls 51 a, 51 a of the sorting frame body 51 with upper side ends by pivot shafts 54 a, 54 a whose left and right axes are oriented. A connecting pin 54b is provided at a lower portion of the left side end, and a left connecting shaft 54a of each chaf sheave 54 is connected by an upper connecting body 63 extending in the front-rear direction, while a lower connecting body extending the connecting pin 54b of each chaf sheave 54 in the front-rear direction. 64, the interval adjusting lever 66 is interlockingly connected to the connecting body 64 via the interlocking body 65, and the lower connecting body 64 is moved forward and backward with respect to the upper connecting body 63 by the spacing adjusting lever 66, The intervals between the chaff sheaves 54, 54 can be integrally adjusted in a plurality of stages (five stages in the present embodiment).

  Moreover, the distance adjusting lever 66 is arranged on the outer side of the side wall 67 through the opening 67a formed in the side wall 67 of the sorting unit 8 so that the distance adjusting lever 66 can be manually operated from the outside. ing. Reference numeral 68 is a transparent closing member that closes the opening 67a, and 69 is an interval adjusting guide member.

  Here, as shown in FIG. 9A, a lower part 161 of the shield 160 extending in the front-rear direction is attached to the front part of the lower connector 64, and an upper part 162 of the shield 160 is connected to the upper connector. It is arranged so as to be in an inner and outer overlapping state on the side of 63, and the upper part 162 always shields the gap S generated between the upper connecting body 63 and the lower connecting body 64 from the left side when they are separated from each other. I am able to Reference numeral 163 is a front interference avoiding recess, and 164 is a rear interference avoiding recess.

  In this way, by constantly shielding the gap S by the upper portion 162 of the shield 160, it is possible to prevent the grains from being discharged to the outside on the left side of the sorting body 50 through the gap S and further to the outside through the opening 67a. To prevent.

[Explanation of Straw Processing Unit 9]
That is, as shown in FIG. 1 and FIG. 2, the straw processing unit 9 receives the grain culm conveyed backward by the grain culm transporting unit 6 as straw and gradually transfers it to the center. And a straw cutter 71 for shredding the straw transferred by the straw transfer body 70.

[Explanation of the driving unit 10]
That is, as shown in FIG. 1, the driving unit 10 has a steering lever 73 installed upright on the front operation column 72, a driver seat 74 disposed behind the steering lever 73, and A side operation column 75 is arranged at the left side position.

[Explanation of the motor unit 11]
That is, as shown in FIGS. 1, 2 and 10, the prime mover section 11 arranges the engine E in an engine room 76 formed below the driver's seat 74, and an intake port section (not shown) of the engine E. (3) is connected to the intake part 13 so that the outside air taken in through the intake part 13 is used for combustion in the engine E, while the exhaust path forming body 78 is connected to the exhaust port part 77 of the engine E. The exhaust gas is discharged through the exhaust path forming body 78 by being connected.

  As shown in FIG. 2, FIG. 10 and FIG. 11, the exhaust passage forming member 78 connects the lower end of the exhaust short pipe 79 to the exhaust port 77 of the engine E, and connects the muffler 100 to the upper end of the exhaust short pipe 79. Is formed by connecting the exhaust muffler 100 to the base end part (front end part) of the exhaust long pipe 101, and the muffler 100 is arranged immediately above the engine E, and the exhaust long pipe 101 is formed at the tip. The portion (rear end portion) is opened so as to project downward from the portion of the machine body frame 2 located between the grain storage portion 14 and the sorting portion 8.

  As shown in FIGS. 10 and 11, the exhaust long pipe 101 includes a long pipe front half 102 and a long pipe rear half 103, and a front end (rear end) 105 of the same long pipe front half 102. A first cooling air suction part 104 is provided between the rear half part 103 of the long tube and a base end part (front end part) 106. The first cooling air suction part 104 serves as a pre-fan provided in the selection part 8. It is located near the second Kara 57.

  Here, as shown in FIG. 11, the first cooling air intake part 104 has an umbrella-shaped first cooling air intake guide body 107 attached to the tip part 105 of the long tube front half part 102, and the first half part of the long pipe. The proximal end portion 106 of the long tube rear half portion 103 is fitted to the outer peripheral surface of the distal end portion 105 of the 102, and the proximal end portion of the long pipe rear half portion 103 is arranged inside the first cooling air intake guide body 107.

  Then, between the inner peripheral surface of the first cooling air intake guide body 107 and the outer peripheral surface of the base end portion 106 of the long tube rear half portion 103, and between the inner peripheral surface of the base end portion 106 of the long pipe rear half portion 103 and the long surface. A first cooling air intake passage 108 is formed which communicates with the outer peripheral surface of the tip portion 105 of the pipe front half portion 102. Reference numeral 114 is a long pipe front half stay, and 115 is a long pipe rear half stay.

  In this way, the first cooling air intake passage 108 is decompressed by the exhaust gas pumped from the front end portion 105 of the long pipe first half portion 102 into the proximal end portion 106 of the long pipe rear portion 103, and the first cooling air intake passage 108 is sucked. The outside air is sucked into the latter half 103 of the long pipe through the passage 108.

  At this time, since the first cooling air suction part 104 is arranged in the vicinity of the second sardines 57 serving as the pre-fan, the second cooling stakes passage 108 of the first cooling air suction part 104 is connected to the second sardines. By 57, the cooling air in the state in which the small dust is sucked is sucked to cool the exhaust gas, and the small dust is not sucked.

  Therefore, it is possible to reliably prevent the problem that a small dust is burned by the exhaust gas having a high temperature to cause a fire.

  Further, a heat insulating pipe 109 is fitted on the outer peripheral surface of the long pipe latter half portion 103, and the second cooling air intake is provided between the base end portion 110 of the heat insulating pipe 109 and the base end portion 106 of the long pipe latter half portion 103. The portion 111 is provided, and the second cooling air suction portion 111 is arranged in the vicinity of the second Karako 57 as a pre-fan provided in the sorting portion 8.

  Here, as shown in FIG. 11, the second cooling air intake part 111 is provided with a second cooling air intake guide body 112 formed in an umbrella shape at the tip end part 106 of the long tube rear half part 103, and at the same time, as shown in FIG. The base end is arranged in the second cooling air intake guide body 112.

  Then, between the inner peripheral surface of the second cooling air suction guide body 112 and the outer peripheral surface of the base end portion 110 of the heat insulating pipe 109, and between the inner peripheral surface of the base end portion 110 of the heat insulating pipe 109 and the rear half portion 103 of the long pipe. A second cooling air intake passage 113 is formed so as to communicate with the outer peripheral surface of the base end portion 106. Reference numeral 116 is a guide body retaining ring, 117 is a heat insulating pipe stay, and 118, 119 and 120 are fixing brackets.

  In this way, the second cooling air intake passage 113 is decompressed by the exhaust air discharged from the tip end opening 121 of the long tube rear half portion 103, and the outside air is drawn into the heat insulating pipe 109 through the second cooling air intake passage 113. I am trying to do it.

  At this time, since the second cooling air intake portion 111 is arranged in the vicinity of the second Karako (57) serving as a pre-fan, the second cooling air intake passage 113 of the second cooling air intake portion 111 is connected to the second Karako By 57, the cooling air in the state where the small dust is sucked in is sucked, so that the exhaust gas can be cooled and the small dust is not sucked in.

  Therefore, it is possible to reliably prevent the problem that a small dust is burned by the exhaust gas having a high temperature to cause a fire.

  13A is a plan view of the fuel tank 125, and FIG. 13B is a rear view of the fuel tank 125. The mounting structure of the fuel tank 125 will be described below.

[Explanation of fuel tank 125]
That is, the fuel tank 125 is formed by connecting the main tank 126 and the sub tank 127 via the communication pipe 128. 129 is an oil supply port, 130 is an oil supply pipe, and 131 is a filter.

  The tank support portion 132 is provided at a part of the machine body frame 2 formed by laterally extending the left and right extension frame forming pieces 135 extending in the left and right directions at the rear portions of the pair of left and right extension extension frame forming pieces 133 and 134 extending in the front and rear direction. Is detachably attached, and the fuel tank 125 is detachably attached to the tank support portion 132.

  Here, the tank support portion 132 detachably mounts a detachable frame forming piece 136 that extends in the left-right direction between the rear end portions of the front-rear extending frame forming pieces 133, 134, and extends in the front-rear direction between both frame forming pieces 135, 136. A plurality of (four in the present embodiment) front and rear extension pieces 137 to be extended are formed by laterally removably laying them at intervals in the left-right direction.

  Then, the detachable frame forming piece 136 is provided with connecting pieces 138, 139 on the left and right side end portions, and each connecting piece 138, 139 is brought into contact with the rear end surface portions 140, 141 of the front-rear extension frame forming pieces 133, 134 in a superposed state from behind, and in the front-back direction. The connecting bolts 142 and 143 with their axes directed are detachably connected.

  Further, each front-rear extension piece 137 forms a connecting piece 144 by raising the front end portion upwardly, and abutting the same connecting piece 144 on the rear surface of the left-right extension frame forming piece 135 from the rear side in the overlapping state, and in the front-back direction. A connecting bolt 145 having an axis directed to is detachably connected.

  Moreover, in each of the front and rear extension pieces 137, the rear end portion 146 is brought into contact with the lower surface of the attachment/detachment frame forming piece 136 in a superposed state from below, and is detachably connected by the connection bolt 147 having the axis line vertically. .

  Further, the rear end portion of the central front-rear extension frame forming piece 151, which extends in the front-rear direction and forms a part of the machine body frame 2, is extended to the vicinity of the midway portion of the detachable frame forming piece 136, and the rear end portion is formed. The connecting piece 152 provided and the connecting piece 153 provided in the middle of the detachable frame forming piece 136 are brought into contact with each other in the overlapping state in the left-right direction, and are detachably connected by the connecting bolt 154 with the axis lined in the left-right direction. ing.

  Further, two sets of front/rear belt connecting pieces 148, 148, 149, 149 facing each other in the front-rear direction are provided on the left and right extension frame forming pieces 135 and the detachable frame forming piece 136, and extend in the front-rear direction between the front and rear belt connecting pieces 148, 148, 149, 149. By straddling the fixing belts 150, 150, the main tank 126 is fixed from above by the both fixing belts 150, 150.

  Then, belt connecting pieces 155 and 156 are respectively provided so as to be opposed to each other in the left-right direction in the middle part of the central part front and rear extension frame forming piece 151 and the middle part of the right side front and rear extension frame forming piece 134, and the belt connecting pieces 155 and 156 are connected to each other. A fixing belt 157 extending in the left-right direction is detachably attached to the sub-tank 127 so that the sub-tank 127 can be fixed from above by the fixing belt 157. 158 is a belt connecting bolt.

  In this way, when the fuel tank 125 is removed from the machine body frame 2 for maintenance or the like, the tank support portion 132 is removed according to the following procedure.

  (1) Remove the fixing belts 150, 150, 157 beforehand.

  (2) Next, the connecting pieces 138, 139 of the detachable frame forming piece 136 are removed from the rear end surface portions 140, 141 of the front-rear extension frame forming pieces 133, 134, and the connecting piece 153 of the detachable frame forming piece 136 is removed at the center portion. Remove from the connecting piece 152 of 151.

  (3) Remove the connecting piece 144 of each front and rear extension piece 137 from the rear surface of the left and right extension frame forming piece 135.

  In this way, the tank support portion 132 can be easily removed rearward and downward from the body frame 2, and maintenance can be easily performed by appropriately removing the main tank 126 and the sub tank 127 from the tank support portion 132, respectively. be able to.

  In the present invention, a threshing unit for threshing cut culms, a sorting unit for sorting grains shredded by the threshing unit, and a prime mover unit for driving the threshing unit and the sorting unit. Exhaust of the engine provided in the section is exhausted through the exhaust passage forming body, and in the combine with the muffler provided in the middle portion of the exhaust passage forming body, the exhaust passage forming body located on the downstream side of the muffler. While providing the cooling air intake part, a pre-fan is provided in the selection part, and the cooling air intake part is arranged in the vicinity of the pre-fan.

  In this way, since the cooling air suction part is arranged near the pre-fan, the cooling air in the state where small dust is sucked by the pre-fan is sucked from the cooling air suction part to cool the exhaust gas. It is possible to reduce the amount of dust and small dust is not inhaled.

Therefore, there is no possibility that a small dust is burned by the exhaust gas having a high temperature to cause a fire.

[0011]
The exhaust muffler 100 is formed by connecting the exhaust muffler 100 to a base end (front end) of the exhaust muffler 100. The muffler 100 is arranged immediately above the engine E, and the exhaust muffler 101 has a tip ( The rear end portion) is opened so as to project downward from the portion of the machine body frame 2 located between the grain storage portion 14 and the sorting portion 8.
[0064] As shown in Figs. 10 and 11, the exhaust long pipe 101 includes a long pipe front half portion 102 and a long pipe rear half portion 103, and the front end portion (rear end portion) of the same long pipe front half portion 102 is provided. ) 105 and a proximal end (front end) 106 of the rear half 103 of the long pipe, a first cooling air suction part 104 is provided, and the first cooling air suction part 104 is provided in the preselection part 8. It is placed in the vicinity of the second Karoh 57 as a fan.
[0065] Here, as shown in Fig. 11, the first cooling air intake part 104 is attached with the first cooling air intake guide body 107 formed in the shape of an umbrella at the tip portion 105 of the first half 102 of the long pipe, and The base end portion 106 of the long tube rear half portion 103 is fitted to the outer peripheral surface of the tip end portion 105 of the pipe front half portion 102, and the base end of the same pipe rear half portion 103 is arranged in the first cooling air intake guide body 107. ing.
[0066] Then, between the inner peripheral surface of the first cooling air intake guide body 107 and the outer peripheral surface of the base end portion 106 of the long tube rear half portion 103, and the inner circumference of the base end portion 106 of the long pipe rear half portion 103. A first cooling air intake passage 108 is formed which connects the surface and the outer peripheral surface of the tip portion 105 of the first half 102 of the long pipe. Reference numeral 114 is a long pipe front half stay, and 115 is a long pipe rear half stay.
[0067] In this way, the first cooling air suction passage 108 is decompressed by the exhaust gas pumped from the front end portion 105 of the long pipe front half portion 102 into the base end portion 106 of the long pipe rear half portion 103, and the first cooling air suction passage 108 is depressurized. The outside air is sucked into the long tube rear half portion 103 through the cooling air suction passage 108.
[0068] At this time, since the first cooling air intake section 104 is arranged in the vicinity of the second Karako 57 as a pre-fan, the first cooling air intake path 108 of the first cooling air intake section 104 is The cooling air in a state where small dust is sucked by the second Karako 57 is sucked in to cool the exhaust gas, and the small dust is not sucked in.
[0069] Therefore, it is possible to reliably prevent the problem that the small dust sucked into the exhaust path forming member 78 is carbonized by the exhaust gas having a high temperature and is discharged together with the exhaust gas.
[0070] Further, a heat insulating pipe 109 is fitted on the outer peripheral surface of the long pipe rear half portion 103, and a second end is provided between the base end portion 110 of the heat insulating pipe 109 and the base end portion 106 of the long pipe rear half portion 103. A cooling air suction unit 111 is provided, and the second cooling air suction unit 111 is arranged near the second Karako 57 as a pre-fan provided in the sorting unit 8.

[0012]
It is location.
[0071] Here, as shown in FIG. 11, the second cooling air intake part 111 is provided with a second cooling air intake guide body 112 formed in an umbrella shape at the tip end portion 106 of the long tube rear part 103, and at the same time, heat insulation is performed. The base end of the tube 109 is arranged in the second cooling air intake guide body 112.
[0072] Then, between the inner peripheral surface of the second cooling air intake guide body 112 and the outer peripheral surface of the base end portion 110 of the heat insulating pipe 109, and between the inner peripheral surface of the base end portion 110 of the heat insulating pipe 109 and the long pipe. A second cooling air suction passage 113 is formed to communicate with the outer peripheral surface of the base end portion 106 of the latter half portion 103. Reference numeral 116 is a guide body retaining ring, 117 is a heat insulating pipe stay, and 118, 119 and 120 are fixing brackets.
[0073] In this way, the second cooling air intake passage 113 is decompressed by the exhaust air discharged from the tip end opening 121 of the long tube rear half portion 103, and the outside air is passed through the second cooling air intake passage 113 through the adiabatic pipe 109. It is designed to be inhaled inside.
[0074] At this time, since the second cooling air intake section 111 is arranged in the vicinity of the second Karako 57 as a pre-fan, the second cooling air intake path 113 of the second cooling air intake section 111 is The cooling air in a state where small dust is sucked by the second Karako 57 is sucked in to cool the exhaust gas, and the small dust is not sucked in.
Therefore, it is possible to reliably prevent the problem that the small dust sucked into the exhaust passage forming member 78 is carbonized by the exhaust gas having a high temperature and is discharged together with the exhaust gas.
[0076] Fig. 13(a) is a plan view of the fuel tank 125, and Fig. 13(b) is a rear view of the fuel tank 125. The mounting structure of the fuel tank 125 will be described below.
[0077] [Explanation of Fuel Tank 125]
That is, the fuel tank 125 is formed by connecting the main tank 126 and the sub tank 127 via the communication pipe 128. Reference numeral 129 is an oil supply port, 130 is an oil supply pipe, and 131 is a filter.
[0078] Then, at the rear of the pair of left and right extension frame forming pieces 133, 134 extending in the front-rear direction, on the rear part of the left and right extension frame forming pieces 135 extending in the left-right direction, a part of the machine body frame 2 formed The tank support portion 132 is detachably attached, and the fuel tank 125 is detachably attached to the tank support portion 132.
[0079] Here, in the tank supporting portion 132, a detachable frame forming piece 136 extending in the left-right direction is detachably mounted horizontally between the rear end portions of the front and rear extending frame forming pieces 133 and 134, and both frame forming pieces are formed.

[0014]
In this case, the tank support 132 is removed according to the following procedure.
[0087] (1) Remove the fixing belts 150, 150, 157 in advance.
(2) Next, the connecting pieces 138, 139 of the detachable frame forming piece 136 are removed from the rear end face portions 140, 141 of the front-rear extension frame forming pieces 133, 134, and the connecting piece 153 of the detachable frame forming piece 136 is removed. Is removed from the connecting piece 152 of the central front-rear extension frame forming piece 151.
(3) Remove the connecting piece 144 of each of the front and rear extension pieces 137 from the rear surface of the left and right extension frame forming pieces 135.
[0090] In this way, the tank support 132 can be easily removed rearward and downward from the body frame 2, and maintenance can be easily performed by removing the main tank 126 and the sub tank 127 from the tank support 132, respectively. And so on.
[Industrial availability]
[0091] The present invention comprises a threshing unit for threshing cut culms, a sorting unit for sorting grains shredded by the threshing unit, and a motor unit for driving these threshing units and sorting units. The exhaust gas of the engine provided in the engine part is discharged through the exhaust flow passage forming body, and in the combine with the muffler provided in the middle part of the exhaust flow passage forming body, the exhaust flow passage located on the downstream side of the muffler. The forming body is provided with a cooling air suction part, while the selecting part is provided with a pre-fan, and the cooling air suction part is arranged in the vicinity of the pre-fan.
[0092] In this way, since the cooling air intake section is arranged near the pre-fan, the cooling air in the state where small dust is sucked by the pre-fan is sucked from the cooling air intake section, The exhaust gas can be cooled, and small dust is not inhaled.
Therefore, it is possible to reliably prevent the problem that the small dust sucked into the exhaust path forming body 78 is carbonized by the exhaust gas having a high temperature and is discharged together with the exhaust gas.

[Title of Invention] Combine

[0001]
【Technical field】
[0001] The present invention relates to a combine.
[Background technology]
[0002] Conventionally, as one form of a combine, there is one in which exhaust gas of an engine provided in a prime mover section is discharged through an exhaust flow passage forming body and a muffler is provided in a midway portion of the exhaust flow passage forming body (for example, , JP-A-10-164959).
DISCLOSURE OF THE INVENTION
[0003] In the above-mentioned combine, although the muffler can muffle the noise, there is a problem that the high temperature exhaust gas is directly discharged to the outside of the machine.
[0004] Therefore, it is conceivable to provide a cooling air intake part in the midway of the exhaust flow path forming body to suck the cooling air from the cooling air intake part to cool the exhaust gas. When small dust is sucked in from the portion, the small dust may be carbonized by the exhaust gas having a high temperature and may be discharged together with the exhaust gas.
Therefore, in the present invention, a threshing unit for threshing cut culms, a sorting unit located below the threshing unit for sorting the threshed grains in the threshing unit, and the threshing unit and the sorting unit. And a drive unit for driving the engine, the exhaust gas of the engine provided in the drive unit is discharged through the exhaust flow passage forming body, and a muffler is provided in a combiner provided with a muffler in the middle of the exhaust flow passage forming body. A cooling air intake part is provided in the exhaust flow passage forming body located on the downstream side of the threshing part, and the first kato (main fan), which is the main fan, is arranged in the sorting part below the threshing part, and the pre-fan is provided on the front side of the first kato. The present invention provides a combine characterized in that the cooling air suction section is arranged in the vicinity of the pre-fan.
Further, in the present invention, a threshing unit for threshing the cut grain culm, a sorting unit for sorting grains threshed in the threshing unit, and a prime mover unit for driving the threshing unit and the sorting unit, The exhaust gas of the engine installed in the engine part is discharged through the exhaust flow passage forming body, and a muffler is provided in the middle of the exhaust flow passage forming body, and the exhaust long pipe located on the downstream side of the muffler is a long pipe. In a combine consisting of the first half and the second half of the long pipe, a first fan, which is the main fan, and a pre-fan on the front side of the combine are arranged in the sorting section, and the first half of the exhaust long pipe on the downstream side of the muffler is arranged. A first cooling air suction part for sucking cooling air while sucking small dust from the pre-fan in the vicinity of the pre-fan, and exhaust gas located further downstream from the position of the first cooling air suction part. The second cooling air suction part is arranged in the latter half of the long pipe, and the first cooling air suction part is provided between the front end of the first half of the long pipe and the base end of the latter half of the long pipe. Also provided is a combiner characterized in that the cooling air suction part is provided between the base end part of the latter half of the long pipe and the base end of the heat insulating pipe fitted to the outer peripheral surface of the latter half of the same pipe.
Furthermore, the present invention is also characterized by the following configurations.
(1) The sorting unit includes a sorting body provided with a feed pan, and the feed pan is composed of a front feed pan and a rear feed pan, and the first Karako is located below the rear feed pan. The pre-fan is located below the front feed pan.
(2) The exhaust flow path forming member includes a first cooling air intake part and a second cooling air intake part arranged near the pre-fan.
[Brief description of drawings]
[0006] [FIG. 1] A side view of a combine according to the present invention.
[FIG. 2] An explanatory side view showing a configuration of functional units on a body frame of the combine.
[FIG. 3] A side explanatory view of a threshing section and a sorting section of the combine.
[FIG. 4] Side explanatory drawing of a threshing part.


1/1

Claims (1)

The threshing section for threshing the cut grain culm, the sorting section for sorting the threshed grains in the threshing section, and the prime mover section for driving the threshing section and the sorting section were provided in the prime mover section. The exhaust of the engine is discharged through the exhaust flow passage forming body, and in the combine with the muffler provided in the middle of the exhaust flow passage forming body,
A combine characterized in that the cooling air intake part is provided in the exhaust flow passage forming body located on the downstream side of the muffler, the pre-fan is provided in the selection part, and the cooling air intake part is arranged in the vicinity of the pre-fan. .

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