KR20070035577A - Combine harvester - Google Patents

Abstract

It is a problem to prevent a small dust from being sucked in from the cooling wind suction unit. Therefore, in the present invention, an engine provided with the threshing unit for threshing the cut grain stem, a sorting unit for sorting grains threshed by the threshing unit, and a prime mover for driving these threshing units and the sorting unit, The exhaust of the exhaust gas is discharged through the exhaust flow path forming body, and in the combiner in which the muffler is provided in the middle portion of the exhaust flow path forming body, the cooling air suction unit is provided in the exhaust flow path forming body located downstream from the muffler. A free fan is provided in the sorting section, and the cooling wind suction section is disposed near the free fan. Therefore, the cooling wind suction part sucks in the cooling wind in the state in which the small dust was sucked in, and the exhaust air is cooled, and small dust is not inhaled.

Description

Combine {COMBINE HARVESTER}

The present invention relates to a combine.

Conventionally, as one type of combine, there is one in which exhaust of the engine installed in the prime mover is discharged through an exhaust passage forming body, and a muffler is provided in the middle portion of the exhaust passage forming body (for example, Japanese Patent Publication). See Publication No. 10-164959).

In the combine, the muffler is used to mute the sound, but there is a problem that high temperature exhaust is discharged out of the device as it is.

Therefore, it is also conceivable to provide a cooling wind suction unit in the middle portion of the exhaust flow path forming body to suck the cooling wind from the cooling air suction unit and to cool the exhaust air, but when small dust is sucked in from the cooling wind suction unit. In addition, small dust may be burned by the exhaust of high temperature, which may cause a fire.

Thus, in the present invention, there is provided a threshing portion for threshing the harvested grain stem, a sorting portion for sorting grains threshed by the threshing portion, and a thruster for driving these threshing portions and the sorting portion. The exhaust of the engine provided at the base is exhausted through the exhaust flow path forming body, and in the combiner provided with a muffler in the middle part of the exhaust flow path forming body, the cooling air is formed in the exhaust flow path forming body located downstream from the muffler. The suction part is provided, while a pre-fan is provided in the sorting part, and the said cooling wind suction part is arrange | positioned in the vicinity of the said free fan, The combine is provided.

1 is a side view of a combine according to the present invention.

2 is a side explanatory diagram showing a configuration of a functional part on a body frame of the combine;

3 is a side explanatory diagram of a threshing portion and a selection portion of the combine;

4 is an explanatory view of the side of a threshing part.

5 is a front view of the threshing part.

6 is an expanded plan view of the water net.

7 is a front explanatory diagram of a cut portion of the threshing portion.

Fig. 8 is a plan explanatory view of a cut out portion of the sorting body.

It is explanatory drawing which shows the top view (a) and side view (b) of a shield.

10 is a plan explanatory view of the prime mover and the separator.

It is a side explanatory drawing of an exhaust flow path formation body.

It is explanatory drawing which shows the top view (a) and side view (b) of a side divider.

It is explanatory drawing which shows the top view (a) and side view (b) of a fuel tank.

A shown in FIG. 1 and FIG. 2 is a combine which concerns on this invention, The said combine A provides the gas frame 2 on the left and right pair of crawler-type traveling parts 1 and 1, The harvesting section 4 and the conveying section 5 can be mounted on the left front end of the base frame 2 via a harvesting frame 3 so as to be liftable, and the grain stem conveying section 6 is located on the front left side of the base frame 2. ), Threshing part 7 and sorting part 8 are arranged, and straw discharge processing part 9 is arranged in the rear part, while driving part 10 is provided in the front part of the right side of gas frame 2, and Arrange | positioned, the prime mover part 11 is arrange | positioned under the said driving part 10, and also the dustproof part 12 is arrange | positioned at the right position (outer position) of the said driving part 10, and The intake section 13 is provided at the rear position of the driving section 10, and the grain storage section 14 is disposed at the rear position of the intake section 13.

In this way, the grain stem is cut off by the harvesting | reaping part 4, the harvested grain stem is conveyed to the grain stem conveyance part 6 of the back upper direction by the conveyance part 5, and the grain stem is conveyed to the said grain stem conveyance part 6, and is received. In addition, the base grain stem is gripped by the grain stem feeding section 6, and the tip of the grain stem is conveyed to the rear in the state where the tip of the grain stem is inserted into the threshing portion 7.

At this time, the tip of the grain stem is threshed by the threshing part 7, and the threshed grains are sorted by the sorting part 8 so that only the fresh grains are conveyed and stored in the grain storage part 14. Doing.

Furthermore, the threshed grain stem is conveyed to the straw discharge processing part 9 as discharge straw, and the straw discharge processing part 9 is made to cut | disconnect and discharge process.

Here, in this embodiment, as shown to FIG. 1 and FIG. 12 (a) (b), one side of the base frame 2 rather than the one side (left side in this embodiment) of the harvesting | reaping part 4 (this embodiment) In the form, the side divider 80 is protruded outwardly over the rear end of the left side, and the undivided grain stem is guided backward by the side divider 80 while being separated from the body. The structure of 80 is demonstrated, referring FIG. 12 (a) (b). 12A is a plan explanatory view of the side divider 80, and FIG. 12B is a side view of the side divider 80.

[Description of Side Divider 80]

That is, the side divider 80 and the front divider formation body 81 arrange | positioned at one side (left side in this embodiment) of the harvesting | reaping part 4, as shown to FIG. 12 (a) (b). Disposed between the rear divider forming body 82 and the front divider forming body 81 and the rear divider forming body 82 disposed on one side (left side in the present embodiment) of the base frame 2. A middle divider forming body 83 is provided, and the middle divider forming body 83 is a non-harvesting grain stem guided along the front divider forming body 81, and the rear divider forming body 82 is provided. To relay to.

And the front part divider formation body 81 is formed from the formation body main piece 84 and the support piece 85 which supports the copper formation body main piece 84, as shown to FIG. 12 (a) (b). It is.

The main body 84 of the formed body is formed by bending a rod-shaped piece extending in the front-rear direction to the outer side in a convex arc shape, and is formed in the front-rear direction through the front pivot piece 86 on the left front side of the mowing frame 3. The front end 84a is pivoted and connected by the front pivot pin 87 facing the axis, and the rear end 84b is disposed on the side of the front left side of the base frame 2.

The support piece 85 is formed by bending the rod-shaped piece extending in the front-rear direction to the outer side in a convex arc shape, and making the front-rear direction through the rear pivot piece 88 at the left middle part of the harvesting frame 3. The front end portion 85a is pivoted and connected by the rear pivot pin 89 facing the front portion, and is installed along the inner surface of the main body 84 of the formed body from the middle portion 85b to the rear end portion 85c. To integrate.

In this way, the front divider forming body 81 is positioned at the use position a which protrudes outward from the harvesting portion 4 and the storing position b which springs up along the side surface of the harvesting portion 4. It is made changeable.

In addition, as shown in FIG. 12 (a), (b), the rear part divider forming body 82 is formed in the front and rear portions of the main body 90 which extends in the front-rear direction, and the main body 90 of the same body. It is formed by the front and rear support pieces 91 and 92 to support.

The main body 90 of the formed body is formed by bending the front end portion 90a and the rear end portion 90b of the straight angled pipe piece extending in the front-rear direction, respectively. 90c is the middle part.

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

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

In this manner, the rear divider forming member 82 can move horizontally to the use position c protruding outward from the base frame 2 and the storage position d close to the base frame 2. It is possible to change the location.

In addition, the rear divider forming member 82 has a structure that is firm at the use position c so as to function as a step in which an operator can ride and work.

In addition, as shown in Fig. 12 (a), (b), the intermediate portion divider forming body 83 is formed in front and rear portions of the body main body 95 and the body main body 95 extending in the front-rear direction. It is formed by the front and rear support pieces 96 and 97 to support.

The main body 95 is formed by bending a rod-shaped piece extending in the front-rear direction to an outer side in a convex arc shape, and is disposed close to the base frame to a position substantially equal to the rear divider forming body 82. The intermediate portion 95a includes the rear end portion 84b of the main body 84 of the front divider forming body 81 and the front end portion of the main body 90 of the forming body of the rear divider forming body 82. It is arranged above 90a), and is formed in a polymerization state in the vertical direction when viewed in a plane with these, and at least in a plan view, the main body 84, 90, of the divider forming bodies 81, 82, 83, 95 is continued in the front-rear direction, so that the uncollected grain stem guided along the front divider forming body 81 can be relayed to the rear divider forming body 82.

Further, both the front divider forming body 81 and the rear divider forming body 82 are at least planar, no matter what attitude they have between the use position (a) (c) and the storage position (b) (d). In view of this, the main body 84 of the front divider forming body 81 and the main body 95 of the middle divider forming body 83 partially polymerize, and the middle divider forming body ( The main body 95 of the formed body 83 and the main body 90 of the rear divider forming body 82 are partially polymerized.

The front support piece 96 is formed in the shape of a rod extending in the left and right direction, and the outer end portion 96a is continuously connected to the front part of the main body 95 of the formed body, and the front part of the base frame 2 is provided. The inner end 96b is fixed to the wall.

The rear support piece 97 is formed in a rod-like shape extending in the left and right direction, and the outer end portion 97a is continuously connected to the middle part of the main body 95 of the formed body, and the front part of the base frame 2 is provided. The inner end 97b is fixed to the wall.

In this way, the middle divider forming body 83 allows the uncollected grain stem guided along the front divider forming body 81 to be relayed to the rear divider forming body 82, so that the front portion The unharvested grain stem guided along the divider forming body 81 can be smoothly and reliably handed over to the rear divider forming body 82, so that the non-harvesting grain stem is smoothly turned over to the rear divider forming body 82. It is possible to reliably prevent the conventional problem of not being caught.

At this time, the intermediate part divider formation body 83 is arrange | positioned and fixed while being located close to the base frame 2 to the position substantially equal to the rear part divider formation body 82 arrange | positioned at the storage position d. Therefore, it is only necessary to change the front divider forming body 81 and the rear divider forming body 82 to the use position (a) (c) and the storage position (b) (d) as needed, respectively. The effort to operate with the side divider does not change, and the uncollected grain stem can be smoothly and reliably guided backwards.

Further, both the front divider forming body 81 and the rear divider forming body 82 are at least planar, no matter what attitude they have between the use position (a) (c) and the storage position (b) (d). In view, the main body 84 of the front divider forming body 81 and the main body 95 of the middle divider forming body 83 partially polymerize, and the middle divider forming body 83 Since the main body 95 of the body and the body main body 90 of the rear divider forming body 82 are disposed so as to partially polymerize, the uncollected grain stem is the body main body of the front divider forming body 81. (84) → Smoothly and reliably guided to the rear according to the order of the main body 95 of the body divider body 83 of the intermediate | middle part divider formation body 83 of the body main body 90 of the rear part divider body 82.

As a result, it is possible to reliably prevent the occurrence of the problem that the unobtained grain stem is caught by the take over portions of the main body portions 84, 90 and 95 and is not guided smoothly.

Hereinafter, each structure of the threshing part 7, the sorting part 8, the straw discharge processing part 9, the driving part 10, and the prime mover part 11 will be described in more detail.

[Description of Threshing Part 7]

That is, as the threshing part 7 arrange | positions the barrel 21 in the feeding chamber 20, as shown in FIG. 4 and FIG. 5, expands the water net 22 in the position just below the copper barrel 21. As shown in FIG. 7, the processing chamber 38 is provided adjacent to the right side of the processing chamber 20, and the processing body 23 is disposed in the processing chamber 38, and the processing body ( 23 is located at the right rear position of the barrel 21.

Then, the barrel 21 is provided so that a plurality of jets 25 protrude from the outer circumferential surface of the cylindrical barrel main body 24 facing the axis in the front-rear direction, and before and after the front and rear ends of the barrel main body 24, respectively. Single walls 26 and 27 are provided to penetrate the pivot support shaft 28 toward the axis in the front-rear direction at the center of the front and rear end walls 26 and 27, and the front and rear walls 29 of the processing chamber 20 It is hypothesized that rotational movement is possible between the 30 and 30 through the barrel support shaft 28.

Moreover, the water net 22 is extended and installed just below the barrel main body 24 via the water support frame 31 formed in the shape of a semi-circle as viewed from the front, and as shown in FIG. The mesh eye boundary part 32 is formed in the 2/3 position, and the magnitude | size of the mesh eye 34 of the rear part mesh forming body 33 located behind the said eye mesh boundary part 32 is made into the mesh eye boundary part ( It is formed larger than the size of the mesh eye 36 of the front receiving mesh forming body 35 positioned in front of the front part 32). 37 is a notch part which communicates with the process trunk 23.

That is, the left and right widths W1a of the meshes 34 of the rear meshing form 33 are substantially the same as the left and right widths W2a of the meshes 36 of the front meshing form 35, The front and rear widths W1b of the meshes 34 of the rear meshing form 33 are formed to be 1.2 to 1.5 times the size of the front and rear widths W2b of the meshes 36 of the front meshing form 35. It is.

Here, as shown by the dashed-dotted line P in FIG. 4, the man-eye boundary part 32 is arrange | positioned ahead of the start end of the chaff sieve 54 provided in the sorting body 50 mentioned later, and is located in front of it. Grains exiting through the water network forming body 35 are received by the front and rear feed pans 52 and 53 installed in the sorting body 50, and the specific gravity is sorted by the front and rear feed pans 52 and 53. In addition, the grain exiting through the rear receiving mesh forming body 33 is blown by the sorting wind from the second air outlet 57 as a free fan flowing upward from the bottom of the chave sieve 54. We are trying to screen.

In this manner, the front grain receiving body 35 causes the grain to be drawn out on the front and rear feed pans 52 and 53, and the grain is divided by the front and rear feed pans 52 and 53. In addition to the sorting box, the grains caught by the rear receiving net forming body 33 can be sorted by the sorting wind from the second tuyere 57 flowing upward from below the chave sieve 54. Therefore, the sorting efficiency can be improved.

3, 7 and 8, the sorting provided in the barrel 21 provided in the threshing part 7 and the sorting part 8 mentioned later just under the barrel 21 is described later. Between the sieves 50, the grain dripping guide 40 is arrange | positioned.

That is, as shown in FIG.3, FIG.7 and FIG.8, the grain dripping guide 40 is the guide main body 41 formed in the rectangular plate shape extended in the front-back direction, and the guide body main body 41. It is formed by the installation edge part 42 formed in the upper edge part of the.

And the attachment edge part 42 is attached to the lower part of the right side wall 20a of the processing chamber 20 with the installation bolt 43, and the guide body 41 is hanged in the shape inclined toward the inner side downward, and In addition, the lower edge portion 41a of the guide body 41 is disposed above the right side of the sorting body 50 to be described later, and the grain-floating guide surface 41b is disposed on the top surface of the guide body 41. It forms so that the grain which threshed and escaped by the said barrel 21 may flow along the same grain falling guide surface 41b to the vicinity of the center part of the selection | selection body 50.

The rear end 41c of the guide main body 41 is positioned near the rear end of the rear feed fan 53 or near the front end of the chaff sieve 54.

In addition, the front and rear edge portions of the guide body main piece 41 are folded at approximately right angles to form reinforcing and connecting pieces 41c and 41c, and the reinforcing and connecting pieces 41c of the front part are the front walls 29 of the processing chamber 20. )

In this way, the grains which are threshed by the barrel 21 and escape | extract by the grain dripping guide surface 41b of the grain dripping guide body 40 arrange | positioned between the barrel 21 and the sorting body 50 are separated into the sorting body ( Since it can be guided to flow to the vicinity of the center part of 50), even when the quantity of grain is large, the sorting efficiency by the sorting body 50 can be ensured favorably.

At this time, the grain falling guide body 40 is formed in the plate shape extended in the front-back direction, forms the grain falling guide surface 41b in the upper surface, and selects the same grain falling guide surface 41b in the sorting body 50. Since the grain falling guide 40 is simplified in structure and compactly configured, the degree of freedom of the arrangement position of the grain falling guide 40 can be increased. It can be easily placed at the position of.

In addition, since the rear end edge 41c of the guide main body 41 is located near the rear end of the rear feed fan 53, or near the front end of the chaff sieve 54, the front side feed The grains can be dropped and guided by the grain flow guide surface 41b over the entire width of the fan 52 and the rear feed pan 53.

Moreover, the notch part 44 for communication formed by cutting out in the trapezoid shape upward from the lower end part is formed in the intermediate part of the guide body main piece 41, The notch part 44 for this communication is the right side of the processing chamber 20. It communicates with the 2nd reduction opening 45 formed in the lower part of the wall 20a to the left-right direction, and the 2nd grain is selected from the 2nd reduction opening 45 through the notch 44 for communication. To reduce the phase.

[Explanation of the selection section 8]

That is, as shown in FIG. 3, FIG. 4, and FIG. 8, the sorting part 8 is the sorting body 50 in the lower position of the barrel 21 and the processing trunk 23 provided in the said threshing part 7. To be able to swing back and forth, the threshing material supplied by threshing by the said barrel 21 and the processing body 23 is received by the sorting body 50, and the 1st material for collection (1st grain) and reselection I am going to sort it by the second article (the second grain).

And the sorting body 50 arrange | positions the front side feed pan 52 and the rear side feed pan 53 to the front part of the sorting frame 51 with the step | step, and of the said rear side feed pan 53 The chaff sieve 54 is disposed at the rear position, the straw rack 55 is disposed at the rear position of the chaff sieve 54, while the grain sieve (not shown) is disposed at the lower position. have.

Further, the second air vent 57 as a free fan is disposed below the front feed fan 52, and the step h of the front and rear feed fans 52 and 53 is defined by the second air vent 57. The sorting wind is acted on between the two), and the first blowing port 58 as the main fan is disposed below the rear feed fan 53, and the sorting body is located behind the rear feed fan 53. The sorting wind is made to act on the rear part of the 50.

Further, a first water container 59 is disposed at a lower position of the chaff sieve 54 to accommodate the first water extending in the left and right direction, and the first water in the first water container 59 is 1. It is collect | recovered by a lump collecting body (not shown), and it is made to convey to the threshing storage part 14.

Further, in the downward position of the straw rack 55, a second water container 60 is disposed extending in the horizontal direction and accommodating the second water, and the second water in the second water container 60 is a second water. It collect | recovers by a reducing body (not shown), is reduced on the front feed pan 52, and is reselected by the sorting body 50.

That is, the front end of the reducing agent 2 is connected to the reducing outlet 45 opened in the right wall 20a of the feeding chamber 20 as described above, and is forwarded through the reducing outlet 45 of the same. The second object is discharged and dropped on the side feed pan 52 so as to be reduced. In Fig. 8, 62 is a guide piece, and the second article reduced by the guide piece 62 is conveyed and guided to the center side.

In this way, since the second article is reduced on the front feed pan 52 to be reselected, grains and dust which are the second article on the front feed pan 52 are dispersed, and these are fed to the rear feed. When dropping onto the fan 53, the sorting wind from the second air vent 57 is acted between the steps h of the front and rear feed fans 52 and 53 to reliably sort out the grain and the dust. Can 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 chaff sieve 54 is provided between the left and right sidewalls 51a and 51a of the sorting frame 51 at intervals in the front-rear direction, and is installed horizontally. It is made possible to swing in the direction, and it is possible to adjust the space | interval of the chaff sieves 54 and 54 which adjoin the front-back direction.

That is, as shown in Fig. 9 (b), the chaff sieve 54 has axis axes 54a and 54a in the left and right sidewalls 51a and 51a of the sorting frame 51 that are directed toward the axis in the left and right direction. And a connecting pin 54b at the lower left end, and connected by an upper connecting member 63 extending the axis 54a on the left side of each chave 54 in the front-rear direction. Meanwhile, the connecting pins 54b of each chave sieve 54 are connected by the lower connecting member 64 extending in the front and rear directions, and the gap adjusting lever is connected to the connecting member 64 through the linking body 65. (66) by interlocking, the lower linkage 64 is moved forward and backward with respect to the upper linkage 63 by the same gap adjusting lever 66, the gap between each chave sieve (54, 54) integrally It is possible to adjust to multiple stages (5 stages in this embodiment).

Moreover, the space | interval adjustment lever 66 is arrange | positioned on the outer side of the side wall 67 through the opening part 67a formed in the side wall 67 of the sorting part 8, and manually sets the space | interval adjustment lever 66 from the outside. I can operate it. 68 is a transparent closing body which closes the opening 67a, and 69 is a space adjusting guide body.

Here, the lower part 161 of the shielding body 160 extending in the front-back direction is attached to the front part of the lower connecting body 64, and the same as that of the shielding body 160 is shown. The upper portion 162 is disposed on the side of the upper connecting portion 63 so as to be inward and outwardly polymerized so that the upper connecting portion 162 is spaced apart from the upper connecting portion 63 by the upper upper portion 162. The clearance gap S created can be always shielded from the left side. 163 is a front interference avoidance recess, and 164 is a rear interference avoidance recess.

In this way, the gap S is always shielded by the upper portion 162 of the shielding body 160, so that the grains pass through the left outer side of the sorting body 50 through the gaps S, or through the openings 67a. It is prevented from being released to the outside.

[Description of straw discharge processing part 9]

That is, the straw discharge processing part 9 receives the grain stem conveyed back by the grain stem conveying part 6 as discharge straw, and discharges it to the center vicinity gradually, as shown to FIG. 1 and FIG. ), And a discharge straw cutter 71 for cutting the discharge straw conveyed by the discharge straw transfer member 70.

[Description of the Driving Unit 10]

That is, as shown in FIG. 1, the driving part 10 stands up and installs the steering lever 73 in the front part operation column 72, and arrange | positions the driver's seat 74 in the rear position of the same steering lever 73. FIG. And the side operation column 75 is arrange | positioned in the left position of the said driver's seat 74. As shown in FIG.

[Description of the prime mover 11]

That is, as shown in FIG. 1, FIG. 2, and FIG. 10, the prime mover part 11 arrange | positions the engine E in the engine room 76 formed below the said driver's seat 74, and the engine E The intake portion 13 is connected to an intake port portion (not shown) of (), and the outside air received through the intake portion 13 is used for combustion in the engine E, while the The exhaust path forming body 78 is connected to the exhaust port 77 so as to exhaust the exhaust gas through the exhaust path forming body 78.

As shown in FIG. 2, FIG. 10, and FIG. 11, the exhaust path formation body 78 connects the lower end part of the exhaust short pipe 79 to the exhaust port part 77 of the engine E, and exhausts the same. The muffler 100 is connected to the upper end of the short pipe 79, and the base end (front end) of the exhaust pipe 101 is connected to the muffler 100 to form the muffler 100. In addition to disposing at the position immediately above (E), the exhaust gas outlet 101 has a leading end (rear end) below the portion of the gas frame 2 positioned between the grain storage 14 and the sorting part 8. It protrudes and opens.

And as shown in FIG.10 and FIG.11, the exhaust_gas | exhaustion_outhole 101 is equipped with the front part of the front part 102 and the back part of the intestine 103, and the front end part (rear end part) 105 of the front part of the said intestine part 102 and A first cooling wind suction part 104 is provided between the proximal end (front end) 106 of the long intestine late part 103, and the first cooling wind suction part 104 is provided in the sorting part 8. It is arrange | positioned in the vicinity of the 2nd air vent 57 as a free fan.

Here, as shown in FIG. 11, the 1st cooling wind suction part 104 attaches the 1st cooling wind suction guide body 107 formed in an umbrella shape to the front-end | tip part 105 of the front half part 102, and In addition, the proximal end 106 of the latter half of the intestinal tract 103 is fitted to the outer circumferential surface of the distal end 105 of the first half of the intestine 102, and the proximal end of the latter half of the intestine 103 is disposed in the first cooling wind suction guide body 107. Doing.

Then, between the inner circumferential surface of the first cooling wind suction guide body 107 and the outer circumferential surface of the proximal end 106 of the intestinal late part 103, and the inner circumferential surface of the proximal end 106 of the intestinal late part 103 and the front intestine part 102. A first cooling wind suction path 108 is formed in communication between the outer circumferential surfaces of the tip portion 105. 114 is the first half stay and 115 is the second half stay.

In this way, the first cooling wind suction path 108 is depressurized by the exhaust gas that is pumped from the distal end portion 105 of the front half portion 102 to the base end portion 106 of the rear half portion 103. The outside air is allowed to be sucked into the intestinal tract 103 through the furnace 108.

At this time, since the first cooling wind suction unit 104 is disposed in the vicinity of the second air vent 57 as a free fan, the first cooling wind suction unit 108 of the first cooling wind suction unit 104 is removed. The cooling air in a state where small dust is attracted by the second air vent 57 is sucked in, and the exhaust air is cooled, and 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 at a high temperature and a fire occurs.

In addition, a heat insulating tube 109 is fitted to the outer circumferential surface of the second intestinal part 103, and a second cooling wind suction part between the proximal end 110 of the heat insulating tube 109 and the proximal end 106 of the latter half part 103 is formed. 111 is provided, and the 2nd cooling wind suction part 111 is arrange | positioned in the vicinity of the 2nd air vent 57 as a free fan provided in the sorting part 8. As shown in FIG.

Here, as shown in FIG. 11, the 2nd cooling wind suction part 111 attaches the 2nd cooling wind suction guide body 112 formed in the umbrella shape to the front-end | tip part 106 of the intestinal latter part 103, and In addition, the base end of the heat insulation pipe 109 is arrange | positioned in the 2nd cooling wind suction guide body 112. As shown in FIG.

And between the inner circumferential surface of the 2nd cooling wind suction guide body 112 and the outer circumferential surface of the base end part 110 of the heat insulation pipe 109, and the inner circumferential surface of the base end part 110 of the heat insulation pipe 109, and the latter half part 103 of A second cooling wind suction passage 113 communicating with the outer circumferential surface of the base end 106 is formed. 116 is a guide retaining ring, 117 is an insulated tube stay, and 118, 119 and 120 are fixing brackets.

In this way, the second cooling wind suction path 113 is depressurized by the exhaust discharged from the front end opening 121 of the rear end portion 103, so that the outside air is insulated through the second cooling wind suction path 113. 109 is to be sucked in.

At this time, since the second cooling wind suction unit 111 is disposed in the vicinity of the second air vent 57 as the free fan, the second cooling wind suction unit 113 of the second cooling wind suction unit 111 is used. The cooling air in a state where small dust is attracted by the second air vent 57 is sucked in, and the exhaust air is cooled, and 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 at a high temperature and a fire occurs.

FIG. 13A is a plan explanatory view of the fuel tank 125, and FIG. 13B is a back explanatory view of the fuel tank 125. Hereinafter, an installation structure of the fuel tank 125 will be described. Explain.

[Description of Fuel Tank 125]

In other words, the fuel tank 125 is formed by connecting the main tank 126 and the sub tank 127 through the communication pipe 128. 129 is an oil supply port part, 130 is an oil supply piping, and 131 is a filter.

A portion of the base frame 2 formed by horizontally installing the left and right extension frame forming pieces 135 extending in the left and right directions on the rear portions of the left and right pairs of the front and rear extension frame forming pieces 133 and 134 extending in the front and rear directions. The tank support 132 is detachably attached to the tank support 132, and the fuel tank 125 is detachably attached to the tank support 132.

Here, the tank support part 132 horizontally installs the detachable frame forming piece 136 extended in the left-right direction between the rear ends of the front and rear extension frame forming pieces 133 and 134 so that both frame forming pieces 135 and 136 are detachable. A plurality of front and rear extension pieces 137 extending in the front-rear direction in between are formed by being horizontally detachably provided at intervals in the left-right direction.

The detachable frame forming pieces 136 are provided with connecting pieces 138 and 139 at the left and right ends thereof, and the connecting pieces 138 and 139 are in contact with the rear end surfaces 140 and 141 of the front and rear extension frame forming pieces 133 and 134 in a polymerized state from the rear side. In addition, it is detachably connected by connecting bolts 142 and 143 facing the axis in the front-rear direction.

In addition, each front and rear extension piece 137 raises the front end portion upward to form the connection piece 144, and contacts the connection piece 144 to the rear surface of the left and right extension frame formation pieces 135 in a polymerized state from the rear. It is detachably connected by the connecting bolt 145 which axially faces in the front-back direction.

In addition, each front and rear extension piece 137 contacts the rear end 146 to the lower surface of the detachable frame forming piece 136 from the lower side in a polymerization state, and to the connecting bolt 147 facing the axis in the vertical direction. It is detachably connected by the.

Further, the rear end portion of the central portion front and rear extension frame forming piece 151 extending in the front-rear direction to form a part of the base frame 2 is extended to the vicinity of the middle portion of the detachable frame forming piece 136, and provided at the rear end portion thereof. The connecting piece 152 and the connecting piece 153 provided in the intermediate portion of the detachable frame forming piece 136 are in contact with each other in a polymerized state in the left and right direction, and detachable by a connecting bolt 154 facing the axis in the left and right direction. Is connected.

In addition, two sets of front and rear belt connecting pieces 148, 148, 149, and 149 are provided on the left and right extension frame forming pieces 135 and the detachable frame forming pieces 136, respectively, facing each other in the front and rear directions, and the front and rear belt connecting pieces 148, 148, 149, and 149 respectively. The main tank 126 is fixed from above by the fixing belts 150 and 150 extending in the front-rear direction between the two sides.

Then, the belt connecting pieces 155 and 156 are disposed so as to face each other in the middle part of the center part front and rear extension frame forming pieces 151 and the middle part of the right front and back extension frame forming pieces 134 so as to protrude and to be provided. By attaching and detaching the fixing belt 157 extending in the left-right direction between the connecting pieces 155 and 156, the sub tank 127 can be fixed by the fixing belt 157 from above. 158 is a belt connecting bolt.

In this way, when the fuel tank 125 is detached from the base frame 2 to perform maintenance and the like, the tank support part 132 is removed in the following procedure.

(1) The fixing belts 150, 150, and 157 are removed in advance.

(2) Next, the connecting pieces 138 and 139 of the detachable frame forming pieces 136 are removed from the rear end surfaces 140 and 141 of the front and rear extension frame forming pieces 133 and 134, and the connecting pieces of the detachable frame forming pieces 136 are provided. 153 is removed from the connecting piece 152 of the front and rear extension frame forming pieces 151.

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

In this way, the tank support 132 can be easily detached from the base frame 2 toward the rear and downward, and the main tank 126 and the sub tank 127 are simply detached from the tank support 132 appropriately, respectively. Maintenance management can be performed.

According to the present invention, there is provided a threshing unit for threshing a cut grain stem, a sorting part for sorting grains threshed by the threshing part, and a thruster for driving these threshing parts and the sorting part, The exhaust is discharged through the exhaust flow path forming body, and in the combiner provided with a muffler in the middle portion of the exhaust flow path forming body, a cooling air suction unit is provided in the exhaust flow path forming body located downstream from the muffler, A free fan is provided in the sorting section, and the cooling wind suction unit is disposed near the free pan.

Thus, since the cooling wind suction part is arrange | positioned in the vicinity of a free fan, the cooling wind of the state in which little dust was attracted by the free fan is sucked in from this cooling wind suction part, and exhaust gas is cooled, and a small dust Is not inhaled.

Therefore, there is no possibility that a small dust is burned by the exhaust gas at a high temperature and a fire occurs.

Claims (1)

The threshing part which threshes the grain stem cut | disconnected, the sorting part which sorts out the grain threshed by the said threshing part, and the prime mover which drives these threshing parts and the sorting part, The exhaust gas of the engine provided in the said prime mover is exhausted, In the combine which is discharged | emitted through the flow path formation body and provided with the muffler in the middle part of the said exhaust flow path formation body, A combine, characterized in that a cooling fan suction unit is provided in the exhaust flow path forming body located downstream from the muffler, a free fan is provided in the sorting unit, and the cooling fan suction unit is arranged near the free fan.

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