JP2016036263A - Harvester - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a harvester enabled to suck ambient air from a relatively high position on a machine frame without inviting the complication of a structure or the hardness of performing a maintenance.SOLUTION: A suction case 8, into which cooling ambient air for a radiator 7 is introduced, comprises: a lower case part 8A adjacent to the radiator 7; and an upper case part 8B extending from the lower case part 8A, upward of the radiator 7. An ambient air introducing intake port 84 is formed in the upper case part 8B, and a width of the upper case part 8B in an axial direction view of a radiator cooling fan 70 is set narrower than the lower case part 8A.SELECTED DRAWING: Figure 9

Description

  The present invention relates to a harvesting machine including a radiator, a radiator cooling fan, and an intake case into which outside air for cooling to the radiator is introduced.

As a harvesting machine including a radiator, a radiator cooling fan, and an intake case into which outside air for cooling to the radiator is introduced, there is a structure shown in [1] below.
[1] A combine in which a driving part is provided below the driver's seat, an engine and a radiator are disposed outside the engine, and a dust net is disposed outside the radiator (see Patent Document 1).
[2] The engine is disposed on the lateral side of the fuselage, the radiator is disposed at a rear position away from the laterally outer side of the engine, and the lateral side of the engine is covered with a side cover. Combine (see Patent Document 2).

JP 2013-155719 A (paragraphs [0022, 0023, 0026,], FIG. 1, FIG. 2, FIG. 5, FIG. 6) JP 2014-14325 A (paragraphs [0059, 0060, 0076,], FIG. 1, FIG. 2, FIG. 14, FIG. 17)

In the structure described in Patent Document 1, since the radiator is disposed in a state of facing the lateral outer side of the engine, the transmission structure between the engine and the radiator can be easily miniaturized, and the radiator cooling fan This is useful in that the air can be used for cooling the gas around the engine.
However, in this structure, the engine is disposed below the driver's seat at a relatively pulling position. For this reason, it takes in the radiator side, but the outside air intake position is also relatively low, and it sucks in the outside air where a lot of dust etc. dances near the ground, so it is difficult to take in clean outside air to the radiator side. There was a problem.

In the structure described in Patent Document 2, the radiator is disposed at a position slightly higher than the ground height of the engine so that outside air is sucked from a relatively high position. However, even in this structure, the supply of outside air to the radiator is suction from the lateral outer side of the radiator, and is sucked from a height position equivalent to the height position where the radiator exists. Even if the mixing ratio of dust or the like is reduced to some extent, it does not change greatly.
In order to improve such a problem, it is conceivable to arrange the radiator itself at a higher position on the fuselage, but if configured in this way, a large support structure for arranging the radiator at a higher position is provided. There is room for improvement in that it may be necessary and the structure may be complicated, or the position of the radiator may be increased, making maintenance work difficult.

  The present invention is intended to enable the intake of clean outside air by allowing the outside air to be taken in from a relatively high position on the machine body without causing the complexity of the structure and the difficulty of maintenance in the harvester. It is.

[Solution 1]
The technical means of the harvesting machine according to the present invention taken to solve the above problems includes a radiator, a radiator cooling fan, and an intake case into which outside air for cooling to the radiator is introduced, and the intake case includes the radiator A lower case portion adjacent to the upper case portion, and an upper case portion extending from the lower case portion to the upper side of the radiator. An air inlet for introducing outside air is formed in the upper case portion, and the shaft of the radiator cooling fan is formed. The width of the upper case part when viewed from the center is set to be narrower than that of the lower case part.

[Operation and effect of invention according to Solution 1]
According to the configuration of the present invention according to the above solution 1,
Since the intake case is provided with a lower case part adjacent to the radiator and an upper case part extending upward from the radiator, outside air is introduced into the radiator from a position higher than the place where the radiator is present. Can do. Therefore, it is possible to take in relatively clean outside air from a high position while the radiator itself is installed at a low position on the airframe.
In addition, since the radiator itself that is likely to require various maintenance may remain in a low position, there is an advantage that maintenance work can be easily performed at a low position. Further, it is advantageous in that it does not require a large support structure for supporting the radiator at a highly lifted position, and it is easy to avoid an increase in the size of the structure.
Moreover, since the width of the upper case part in the axial view of the radiator cooling fan is set to be narrower than that of the lower case part, other devices etc. can be installed on the upper side of the lower case part without increasing the longitudinal length of the fuselage. It is also advantageous in that a surplus space that is easy to deploy can be formed.

[Solution 2]
Another technical means of the present invention taken to solve the above problem is that the intake port is formed on the surface of the upper case portion on the opposite side to the side where the radiator is present in the horizontal direction. That is.

[Operation and effect of invention according to Solution 2]
According to the configuration of the invention relating to the solving means 2, the outside air can be taken in from the side opposite to the side where the radiator is present in the horizontal direction.

[Solution 3]
Another technical means of the present invention taken in order to solve the above-mentioned problem is that the intake port is formed on the same surface as the side where the radiator is present in the horizontal direction in the upper case part. It is.

[Operation and effect of invention according to Solution 3]
According to the configuration of the invention relating to the solving means 3, the outside air can be taken in from the same side as the side where the radiator is present in the horizontal direction.

[Solution 4]
Another technical means of the present invention taken in order to solve the above-described problems is that the intake port has a surface on the same side as the side where the radiator is present in the horizontal direction in the upper case portion, and the radiator exists. That is, it is formed on the surface opposite to the side and on the surface of the portion existing over the surface.

[Operations and effects of invention according to Solution 4]
According to the configuration of the invention relating to the solution means 4 described above, the outside air is drawn from the periphery of the portion that exists across the surface on the same side as the side where the radiator is present in the horizontal direction and the surface opposite to the side where the radiator is present. Can be captured.

[Solution 5]
Another technical means of the present invention taken to solve the above-mentioned problems is that the upper case portion has a surface wider in the axial direction than the lower case portion, and the surface formed on the wider surface is the surface of the upper case portion. This means that an intake port is provided.

[Operation and effect of invention according to Solution 5]
According to the configuration of the invention relating to the solution means 5 described above, there is an advantage that external air intake from the outside can be performed easily in a state in which clogging is unlikely to occur by effectively using the wide surface of the upper case portion. .

[Solution 6]
Another technical means of the present invention taken to solve the above problem is that the upper case portion is provided in a state of being biased to one side with respect to the lower case portion in the horizontal direction.

[Operations and Effects of Invention According to Solution 6]
According to the configuration of the invention relating to the above solution 6, the space on the lower case portion on the side opposite to the side on which the upper case portion is biased is made as wide as possible so that it can be easily used as a space for disposing other devices. There are benefits that can be done.

[Solution 7]
Another technical means of the present invention taken in order to solve the above-described problem is that the lower case portion includes an opening portion that opens on the opposite side to the side facing the radiator, and a cover lid member that covers the opening portion. Is configured to be openable and closable.

[Operation and effect of invention according to Solution 7]
According to the configuration of the invention relating to the above solution 7, it is easy to perform maintenance in the intake case and the radiator from a relatively low position by using an opening that opens to the opposite side to the side facing the radiator. There are advantages.

[Solution 8]
Other technical means of the present invention taken in order to solve the above-mentioned problems include a threshing device mounted on a self-propelled aircraft body, and the radiator cooling fan is disposed on the lateral side of the threshing device, That is, the radiator is disposed on a lateral side of the radiator cooling fan, and the upper case portion is configured such that the intake port is located at a position higher than the radiator.

[Operation and effect of invention according to Solution 8]
According to the configuration of the invention relating to the above solution 8, the lateral space of the threshing device on the self-propelled machine body is effectively used, and the radiator itself remains installed at a low position on the machine body, relatively from a high position. It becomes possible to take in clean outside air.
Therefore, the radiator can be arranged compactly at a low position using the space on the side of the threshing device, and the radiator can be easily maintained, and the large-scale support that supports the radiator at a high lifted position. There is an advantage that it is easy to take in clean outside air at a high position while avoiding an increase in size of the structure without requiring a structure.

[Solution 9]
Another technical means of the present invention taken to solve the above-described problem is that a drainer part is provided at the rear of the threshing device, and the radiator is located near the rear part of the self-propelled aircraft body. It is located on the lateral side, and the upper case part extends to the upper side of the exhaust wall part.

[Solution 9: Functions and Effects of the Invention]
According to the configuration of the invention relating to the solving means 9 described above, the upper case portion extends to the upper side of the exhaust wall portion, so even when a large amount of dust is generated in the exhaust wall portion, the upper side is higher than that. In the upper case portion that sucks in the outside air, there is an advantage that it is easy to take in the outside air in a state where it is difficult to be affected by the dust generated in the exhaust wall portion.

[Solution 10]
Another technical means of the present invention taken in order to solve the above-described problem is that an engine is disposed in front of the radiator, and a blower mechanism that blows outside air toward the engine is provided outside the engine. It is that.

[Operations and Effects of Invention According to Solution 10]
According to the configuration of the invention relating to the solving means 10 described above, since the air blowing mechanism for blowing the outside air toward the engine is provided, the accumulated dust around the engine can be blown off by the outside air sent by the air blowing mechanism. There is an advantage that dust accumulation around can be suppressed.

[Solution 11]
Another technical means of the present invention taken in order to solve the above problems is that an engine is disposed in front of the radiator, and a working space is provided between the engine and the radiator. The side cover that covers the lateral outer side of the working space is provided at the lateral outer side of the work space, and the side cover is configured to be openable.

[Operations and Effects of Invention According to Solution 11]
According to the configuration of the invention relating to the above solution 11, there is an advantage that the space between the engine and the radiator can be effectively used as a work space.

[Solution 12]
Another technical means of the present invention taken in order to solve the above problem is that a Glen tank is disposed above the radiator, and the upper case portion is disposed adjacent to the Glen tank. It is.

[Operations and Effects of Invention According to Solution 12]
According to the configuration of the invention relating to the solving means 12, even if the Glen tank is located above the radiator, the upper case portion is present at a position adjacent to the Glen tank, so that the presence of the Glen tank is obstructed. There is an advantage that outside air can be introduced from a high position.

[Solution 13]
Another technical means of the present invention taken to solve the above problems is that the Glen tank is disposed so as to extend above the engine, the radiator, and the threshing device disposed in front of the radiator, The upper case part is provided behind the Glen tank.

[Operations and Effects of Invention According to Solution 13]
According to the configuration of the invention relating to the solving means 13, since the upper case portion is provided so as to be located behind the Glen tank, the Glen tank extends to the rear side so as to overlap the upper side of the lower case portion. It is also possible, and there is an advantage that it is easy to ensure a large capacity of the Glen tank.

[Solution 14]
Another technical means of the present invention taken in order to solve the above problem is that an operating part is provided on the front side of the Glen tank.

[Operations and Effects of Invention According to Solution 14]
According to the configuration of the invention relating to the solution means 14 described above, there is an advantage that it is easy to maintain a good front field of view without being hindered by the presence of the Glen tank.

[Solution 15]
Another technical means of the present invention taken to solve the above problems is that a fuel tank is disposed below the Glen tank and on the opposite side of the self-propelled aircraft from the side where the intake case is provided. It is that it has been.

[Operations and Effects of Invention According to Solution 15]
According to the configuration of the invention relating to the solving means 15 described above, the portion of the lower space of the Glen tank on the self-propelled aircraft body that is opposite to the side where the radiator and the intake case are disposed is also provided for disposing the fuel tank. It can be used effectively as a space. Therefore, there is an advantage that the lower space of the Glen tank can be effectively used with a good balance between left and right.

[Solution 16]
Another technical means of the present invention taken in order to solve the above-mentioned problems is that the Glen tank is provided with an unloader for discharging the stored matter, and the unloader is raised in a direction to lift the stored item from the front wall of the Glen tank. A vertical conveying cylinder, a horizontal conveying cylinder extending in a laterally falling direction from an upper end portion of the vertical conveying cylinder, and a discharge portion for discharging a stored substance from a tip portion of the horizontal conveying cylinder. It is configured to be able to change the posture to a storage discharge posture in which the transport cylinder is directed to the lateral outer side of the self-propelled aircraft and a storage posture in which the horizontal transport barrel is directed rearward along the self-propelled aircraft, and the unloader The discharge part is configured to be positioned rearward of the upper case part at an upper position of the discharge straw part provided at the rear of the threshing device in the retracted posture.

[Operations and Effects of Invention According to Solution 16]
According to the configuration of the invention relating to the solving means 16, in the harvester equipped with the unloader, the unloader discharging portion in the retracted position is configured to be positioned rearward of the upper case portion above the discharging wall portion. Therefore, there is an advantage that the space between the upper side of the draining wall part and the rear side of the upper case part can be used well to be easily stored in a compact manner.

It is a right view of a combine. It is a whole top view of a combine. It is a side view which shows the power transmission structure of an engine, a transmission, and a threshing apparatus. It is a top view which shows the power transmission structure of an engine, a transmission, and a threshing apparatus. It is a side view which shows the power transmission structure from an engine to a radiator cooling fan. It is a top view which shows the power transmission structure from an engine to a radiator cooling fan. It is a rear view which shows a ventilation mechanism. It is a diagram which shows a power transmission system. It is a side view which shows the intake case part to a radiator. It is a rear view which shows the intake case part to a radiator. The intake case part to a radiator is shown, (a) is a top view, (b) is a perspective view which shows the upper and lower connection location. It is a disassembled perspective view which shows a radiator, an intake case, and a radiator cooling fan. It is a top view in the section which meets a horizontal direction which shows a forward / reverse rotation selection mechanism. It is a rear view in the section which meets the up-and-down direction which shows a forward / reverse selection mechanism. It is a disassembled perspective view which shows the attachment structure of a forward / reverse rotation selection mechanism. It is a side view which shows the normal transmission state in a normal / reverse rotation selection mechanism. It is a side view which shows the reverse transmission state in a forward / reverse selection mechanism. It is an enlarged side view showing a forward / reverse selection mechanism. It is the XIX-XIX sectional view taken on the line in FIG. It is a side view showing a belt detachment stopper. It is a top view which shows a belt detachment stopper. It is explanatory drawing which shows the attachment state of the operation tool inside a driving | running cabin. It is a right view of the combine in another embodiment.

Hereinafter, embodiments of the present invention will be described with reference to the drawings.
〔overall structure〕
FIG.1 and FIG.2 has shown the whole straw input type | mold (normal type) combine which is an example of the harvester which concerns on this invention. FIG. 1 shows the right side of the entire aircraft, and FIG. 2 shows the plane.

As shown in these drawings, the full throw-in type combine described above has a pair of left and right front wheels 2F, 2F (corresponding to a front traveling device) and a pair of left and right rear wheels 2R, 2R ( A traveling device 2 is provided which corresponds to a rear traveling device.
A driving cabin 15 (corresponding to the driving part) is provided at the front part of the vehicle body frame 1, a threshing device 4 and a glen tank 5 are provided on the rear side, respectively, and an exhaust straw processing device 16 (corresponding to the exhaust wall part) Yes). Furthermore, a self-propelled machine body is configured with a cutting processing device 17 that moves up and down around a horizontal axis (not shown) along the left-right direction with respect to the vehicle body frame 1.
The engine 3 is mounted on the lateral side of the threshing device 4 at the front portion on the body frame 1, and the radiator 7 is disposed at a rear position away from the engine 3. A fuel tank 14 is mounted on the opposite side of the threshing device 4 from the engine 3 and the radiator 7. The power of the engine 3 is transmitted to the threshing device 4, the cutting processing device 17, the radiator cooling fan 70 that cools the radiator 7, and the like, in addition to the traveling device 2 described above.

Power is transmitted to the front wheels 2F of the traveling device 2 via a front wheel drive shaft 24 extending left and right from a transmission 20 mounted on the front portion of the vehicle body frame 1. In other words, from the front wheel drive shaft 24 via the speed reduction case 25 provided in a state of entering a recessed portion formed on the surface of the front wheel 2F facing the inward side of the body, and the front axle 2a supported by the speed reduction case 25 Power is transmitted to the front wheel 2F.
As a result, the front wheel 2F is mounted so that the power of the engine 3 is transmitted through the front axle 2a and is driven to rotate around the horizontal horizontal axis x1, both in the lateral width and diameter. However, it is comprised by the non-steering wheel which consists of a tire wheel larger than 2R of rear-wheels.

  As shown in FIGS. 1 and 2, the rear wheel 2 </ b> R is provided at the left and right ends of a rear wheel support frame 10 that is mounted on the rear portion of the vehicle body frame 1 so as to be swingable left and right around a longitudinal axis (not shown). It is provided on the side. Further, it is constituted by a steering wheel provided with a rear axle 2b that can be steered around the vertical swing axis y1. The rear wheel 2R is composed of a tire wheel whose left-right width and diameter are set smaller than those of the front wheel 2F, and rotates around a horizontal horizontal axis x2 of the rear axle 2b.

On the left and right lateral sides of the self-propelled aircraft, there is an exterior cover 9 (on the side cover) so as to cover the aircraft lateral sides located between the front wheels 2F and the rear wheels 2R below the Glen tank 5 Equivalent).
The exterior cover 9 is supported so as to be able to undulate and swing around a swing fulcrum z1 along the front-rear direction provided in the vicinity of the upper end side, the wide cover surface 9A is closed along the vertical direction, and the cover surface 9A is horizontal. It is configured such that the posture can be switched to an open posture along the direction.

[Reaping processing device]
As shown in FIG.1 and FIG.2, the cutting processing apparatus 17 which raises / lowers around the horizontal axis center along a left-right direction in the front side of the threshing apparatus 4 mounted in the vehicle body frame 1 is provided.
This cutting processing device 17 cuts the feeder 17A that feeds crops such as stalks that have been cut to the threshing device 4, the scraping reel 17B that scrapes the crop tips such as planted stalks, and the plant side. A mowing device 17C and a lateral feed auger 17D that collects the harvested crops at the center in the cutting width direction are provided, and the crops are harvested, fed into the feeder 17A, and supplied to the threshing device 4.
Although not shown, the feeder 17A is equipped with an endless belt-like carrier that rotates in the front-rear direction inside a rectangular tube-like case, and is configured to convey the fed harvested crops upward and rearward. ing. The crop conveyance direction by the feeder 17A is the front-rear direction along the handling cylinder rotation axis p0 (see FIG. 2) of the handling cylinder 40 in the threshing device 4, and the scraping reel 17B or the like along with the lifting operation of the feeder 17A portion. The reaping device 17C and the transverse feed auger 17D are also configured to be able to move up and down.

[Threshing equipment]
As described above, the threshing device 4 is disposed on the body frame 1 so that the barrel rotation axis p0 is along the front-rear direction. This threshing device 4 is arranged in the front-rear direction interval between the front wheel 2F and the rear wheel 2R in the front-rear direction, and is also arranged in a state of being located within the interval width between the left and right front wheels 2F and the rear wheel 2R in the left-right direction. Yes.
Further, as shown in FIG. 1, the threshing device 4 has a lower surface slightly lower than the front axle 2a of the front wheel 2F that is a non-steering wheel and slightly higher than the rear axle 2b of the rear wheel 2R that is a steering wheel. In position. That is, the front axle 2a of the front wheel 2F that is a non-steering wheel or the rear axle 2b of the rear wheel 2R that is a steering wheel is disposed at substantially the same height.
The threshing device 4 arranged in this way is arranged in a state where the barrel rotation axis p0 of the threshing device 4 is biased to the left side with respect to the center line CL in the left-right direction of the machine body. Since the center line in the left-right direction of the threshing device 4 is present at the same position as the front and rear barrel rotation axis p0 of the barrel 40 disposed inside, the entire threshing device 4 is also It is arranged in a state of being deviated to the left with respect to the center line CL in the left-right direction of the airframe.

The feeder 17A for supplying the harvested crop to the threshing device 4 is arranged in a state of being deviated to the left side with respect to the center line CL in the left-right direction of the machine body as in the threshing device 4, as shown in FIG. In addition, the transmission 20 that is biased to the right with respect to the center line CL in the left-right direction of the machine body is disposed at a position that partially overlaps in plan view.
The waste straw processing device 16 is integrally attached to the rear portion of the threshing device 4, and is configured to cut the waste straw after the threshing treatment and discharge it to the outside.

The threshing device 4 is formed in a rectangular box shape that is long in the longitudinal direction of the machine body, and includes a tang 41 at the front end thereof (see FIG. 8). The chopping shaft 41a provided with the blower blades of the tang ridge 41 is extended to the right lateral outer side of the threshing case 4A, and the threshing for receiving the power transmitted from the engine 3 to the threshing device 4 at the extending portion of the threshing shaft 41a. An input pulley 41b is attached.
The threshing device 4 is not provided with a secondary tang and is configured to blow air to the selected portion using only the tang 41.

  Inside the threshing device 4, a handling cylinder 40 for threshing the harvested crop fed from the feeder 17A side is arranged so as to be driven to rotate around a handling cylinder axis 40a in the front-rear direction. In addition to the handling barrel 40, a sorting processing device 42 that swings and sorts the harvested crop that has been threshed by the handling barrel 40 and the like are provided along with the air blowing action of the Karatsu 41.

[Glen tank]
As shown in FIGS. 1 and 2, the Glen tank 5 is located on the rear side of the operation cabin 15, on the right side of the body frame 1, and on the left side of the tank support 13. Is provided across the upper side of the threshing device 4.
The Glen tank 5 is mounted with a box-shaped tank body 51 having a width in the left-right direction over almost the entire width in the left-right direction of the fuselage on the upper side of a bottom frame 50 formed in a lattice shape by assembling various steel materials such as square pipes. It is.
The bottom frame 50 and the tank body 51 are integrally connected, and supported by a swing support shaft 52 provided at the upper end of the tank support 13 so as to be swingable around a swing axis z2 in the front-rear direction. Has been.

The tank support 13 is disposed on the vehicle body frame 1 between the front wheel 2F and the rear wheel 2R at the right lateral side portion of the threshing device 4, as shown in FIGS. Has been. The tank support 13 includes an outer support 13 </ b> A disposed on the side farther from the threshing device 4 and an inner support 13 </ b> B disposed on the side closer to the threshing device 4 than that. The lower end portion of the outer support column 13A and the lower end portion of the inner support column 13B are fixed to the vehicle body frame 1, and the upper end portions of the outer support column 13A and the inner support column 13B are connected to the upper frame 13C. An end of the grain discharge port 5A corresponding to one end of the grain tank 5 in the left-right direction is connected to and supported by the upper frame 13C so as to swing up and down around the swing axis z2 in the front-rear direction. .
A hydraulically driven dump cylinder 53 is interposed between the inner column 13 </ b> B of the tank support 13 and the bottom frame 50 of the Glen tank 5. The expansion and contraction of the dump cylinder 53 causes the Glen tank 5 to swing up and down around the swing axis z2 between a storage posture in which the bottom surface of the tank body 51 is horizontal or substantially horizontal and a discharge posture in which the bottom surface is raised. The posture can be changed by moving it.

On the vehicle body frame 1 provided with the tank support 13, as shown in FIGS. 5 and 6, on the rear side of the engine 3, the equipment mounting base 26, maintenance, etc. using the lower space of the tank support 13. A work space s1 that is easy to use for this work is provided.
A compressor 3C, which will be described later, is installed on the device mounting base 26, and a valve unit 27 is provided in a state of being located on the inner side of the compressor 3C. The compressor 3C and the rear side of the valve unit 27 The battery 28 is mounted in the position. The work space s1 is formed between the rear end of the equipment mounting base 26 and the front end of the radiator 7 and closer to the body side than the lateral outer end of the body frame 1, and an operator standing on the ground enters the work space s1. In this state, it is possible to perform maintenance on the equipment on the equipment mounting base 26 on the front side and the periphery of the radiator 7 on the rear side.
The device mounting table 26 and the work space s1 are covered by the outer cover 9 located outside thereof when the outer cover 9 is in the closed position, and the outer side is covered when the outer cover 9 is switched to the open position. Is released.

[Driving cabin]
As shown in FIGS. 1, 2, and 22, the driving cabin 15 is mounted and installed on the driving unit frame 11 that is erected on the vehicle body frame 1.
Thus, the driving cabin 15 is supported by the vehicle body frame 1 via the driving unit frame 11 at a position higher than the upper edge of the outer diameter of the front wheel 2F and at a position ahead of the rear edge of the front wheel 2F. .

In the driving cabin 15, a steering handle 15a for steering operation, a driving seat 15b, and the like are arranged, and the rear wheel 2R is steered by operation of the steering handle 15a. In this driving cabin 15, as shown in FIG. 22, between the right side portion of the driving seat 15 b indicated by the phantom line and the side panel 105 existing on the right side thereof, the cutting processing device 17 (to be described later) A part reverse rotation operation tool 106 and a fan reverse rotation operation tool 107 of the radiator cooling fan 70 are provided.
The reaping portion reverse operation tool 106 is linked to the forward rotation clutch 19A and the reverse rotation clutch 19B of the reaping portion via a linkage mechanism (not shown) having an operation rod 106a, and the fan reverse rotation operation tool 107 is connected to the operation wire 107a. The radiator cooling fan 70 is linked to an operation arm 62 (described later) of the radiator cooling fan 70 via a linkage mechanism (not shown). In association with the pulling operation of the operation tools 106 and 107, the operation tools 106 and 107 are linked so as to be in the reverse rotation state only during the pulling operation.

[Power transmission structure]
Next, a power transmission structure that transmits the power of the engine 3 to the threshing device 4, the radiator cooling fan 70, and the like will be described.
As shown in FIGS. 2, 4, 7, and 8, the engine 3 is disposed at a position on the right outer side on the vehicle body frame 1 with a crankshaft (not shown) along the left-right direction of the body. .
An output pulley 30 (corresponding to an engine output rotator) as a first output unit together with the flywheel 3A is provided on one end side (the inward side of the body) of the engine 3 in the state where the axial direction is along the left and right direction of the body. ) Is provided. An output shaft 31 as a second output portion protrudes from the other end side in the left-right direction (outside the machine body). The output shaft 31 has a second output pulley 31a, a third output pulley 31b, and a fourth output. A pulley 31c is attached.

[Power transmission structure by the first output unit]
As shown in FIGS. 3 and 4, the transmission 20 to which the driving force is transmitted from the output pulley 30 that is the first output portion of the engine 3 is on the front side of the engine 3 and on the side closer to the body side than the engine 3 (right and left sides). On the left in the direction).
The transmission 20 is provided with an input shaft 21 that protrudes outward from the machine body (right side in the left-right direction). An input / output pulley 22 is mounted on the input shaft 21 so as to rotate integrally therewith. It is. The three first transmission belts 32 </ b> A are wound between the input / output pulley 22 and the output pulley 30, and engine power is input from the output pulley 30 to the transmission 20.

The input / output pulley 22 includes a first rotating body portion 22A having three belt grooves for winding the three V belts of the first transmission belt 32A, and a second transmission belt 32B described later. A second rotating body portion 22B having two belt grooves for winding is provided.
The first rotator portion 22A and the second rotator portion 22B are constituted by a multiple pulley integrally molded, the first rotator portion 22A side is located on the outer side of the machine body where the engine 3 is present with a large diameter, The rotating body portion 22B has a small diameter, and is located closer to the body side where the threshing device 4 exists.
The transmission 20 is provided with a continuously variable transmission 23 for shifting the power input from the input shaft 21 and transmitting it to the traveling device 2 on the side opposite to the side where the input / output pulley 22 is provided. The power shifted by the continuously variable transmission 23 is configured to be output from the front wheel drive shaft 24 via a transmission mechanism (not shown) provided inside the transmission 20.

A second transmission belt 32 </ b> B configured by a set of two V belts, which is an example of an endless rotation belt, is wound around the second rotating body portion 22 </ b> B of the input / output pulley 22.
The second transmission belt 32B is wound around the threshing input pulley 41b provided on the tang shaft 41a of the threshing device 4, and the engine power is transmitted from the second rotating body portion 22B through the second transmission belt 32B. It is comprised so that it may input.
The threshing input pulley 41b on the side of the tang shaft 41a is formed to have a larger diameter than the second rotating body portion 22B and the output pulley 30, and is configured so that the engine speed is reduced and transmitted to the tang shaft 41a. ing.

As shown in FIGS. 2 to 4, the threshing device 4 is mounted on the vehicle body frame 1 on the rear side of the transmission 20, and the tang shaft 41 a is arranged in the front-rear direction of the engine 3 than the input shaft 21 of the transmission 20. The position is close to the axis x3 of the output pulley 30 and the output shaft 31. Specifically, as shown in FIG. 3, when viewed in the direction of the axial center x3 of the output pulley 30 and the output shaft 31 of the engine 3, the tang shaft 41 a is in a position overlapping the output pulley 30.
Therefore, the output pulley 30 and the threshing input pulley 41b overlap each other, and the first transmission belt 32A and the second transmission belt 32B are also arranged in a positional relationship that overlap each other.

In plan view, as shown in FIGS. 2 and 4, the output pulley 30, the input / output pulley 22, and the threshing input pulley 41 b are also disposed between the engine 3, the transmission 20, and the threshing device 4. . The input / output pulley 22 is arranged such that the first rotating body portion 22A is close to the engine 3 side and the second rotating body portion 22B is close to the transmission 20 and the threshing device 4.
Therefore, as a matter of course, the first transmission belt 32 </ b> A and the second transmission belt 32 </ b> B are also disposed between the engine 3, the transmission 20, and the threshing device 4.

A first tension wheel 35 is provided on the first transmission belt 32A wound around the output pulley 30 of the engine 3 and the first rotating body portion 22A of the transmission 20.
The second transmission belt 32B wound around the second rotating body portion 22B of the transmission 20 and the threshing input pulley 41b of the threshing device 4 is provided so that the second tension ring 36 acts on the second transmission belt 32B.

As shown in FIGS. 3 and 4, the first tension ring 35 has one end side of the support shaft 35a extended in one direction long, and the extended portion is connected to the free end side of the swingable first arm member 35b. The biasing mechanism 37 is supported on the free end side.
As shown in FIG. 3, the first arm member 35 b is an L-shaped support frame that is lifted to a position higher than the transmission 20 so as to serve as a mounting base for the driving unit frame 11 in the vehicle body frame 1. 12 is pivotally supported on the base end side. The base end side of the urging mechanism 37 is pivotally supported by a bracket 1 a fixed to the vehicle body frame 1 on the side close to the engine 3.
The urging mechanism 37 is equipped with a compression spring 37 a that urges the urging mechanism 37 in a direction that shortens the distance between the support shaft 35 a and the pivotally supported portion on the proximal end side of the urging mechanism 37. A biasing force is applied to the first tension wheel 35 so that the first transmission belt 32A is always biased to the tension side by the biasing force of the compression spring 37a.

The second tension ring 36 is attached to a second arm member 36b whose pivot 36a is pivotally supported on the upper side of the transmission 20 and configured to be swingable. An operation member 36c having a coil spring is connected to the middle position in the length direction of the second arm member 36b, and an operation cabin such as an operation lever that can be swung is connected to the operation member 36c. A threshing clutch operating tool (not shown) provided in 15 is configured to be switchable between a threshing clutch engaged state and a disconnected state.
As a result, the threshing clutch is engaged so that the engine power is transmitted to the threshing device 4 by swinging the second tension wheel 36 to the lifting side and switching to the side where the second transmission belt 32B is tensioned. By releasing the lifting of the second tension wheel 36 and switching to the side where the second transmission belt 32B is relaxed, the threshing clutch disengaged state in which the transmission of the engine power to the threshing device 4 is cut off.

As shown in FIG. 8, the engine power input to the rod shaft 41a is treated with a handling cylinder side drive mechanism 43 for driving the handling cylinder 40 and a harvesting side drive that transmits the power to the harvesting processing device 17 including the feeder 17A. The mechanism 44 and the sorting side driving mechanism 45 for driving the sorting processing device 42 and the like are distributed and supplied. Each of the handling cylinder side drive mechanism 43, the cutting side drive mechanism 44, and the sorting side drive mechanism 45 includes a transmission belt. The power is also transmitted from the lower transmission side of the sorting-side drive mechanism 45 to the waste straw processing device 16 via the transmission belt 46.
The sorting-side drive mechanism 45 includes a transmission belt 45a that transmits power to the first screw 42a and the lifting device 47, a transmission belt 45b that transmits power to the second screw 42b and the second reduction device 48, and a swing sorting plate. And a transmission belt 45c for transmitting power to 42c.

Of the engine power input to the carp shaft 41a, the power distributed and supplied to the cutting side drive mechanism 44 is input to the forward rotation pulley 18a of the cutting drive shaft 18 of the cutting processing device 17 via the transmission belt. Yes. Further, the power distributed and supplied to the handling cylinder side drive mechanism 43 is output from the reverse rotation output pulley 49b as the reverse rotation power through the reverse rotation mechanism 49a built in the handling cylinder drive case 49. The reverse rotation power is transmitted to the cutting drive shaft 18 via a transmission belt that is stretched over the reverse rotation output pulley 49b and the reverse rotation pulley 18b of the cutting drive shaft 18.
As shown in FIG. 8, the forward rotation clutch 19A that can operate the transmission belt that transmits power to the forward rotation pulley 18a in a tensioned state and a relaxed state, and the transmission belt that transmits power to the reverse rotation pulley 18b are in a tensioned state and a relaxed state. And a reverse clutch 19B operable.

The forward rotation clutch 19A and the reverse rotation clutch 19B are configured so as to transmit power in a state where the transmission belt is in tension, and not transmit power in a state in which the transmission belt is relaxed, and when one is in tension, the other is It is configured to switch between a tensioned state and a relaxed state in a contradictory manner so as to be in a relaxed state.
The forward rotation clutch 19A is in a state of tensioning the transmission belt, and the reverse rotation clutch 19B is normally biased to be in the forward rotation driving state so as to be in a relaxed state.
From this state, by pulling a reaping portion reverse operation tool 106 in the operation cabin 15 described later, the reverse rotation clutch 19B is tensioned, and the forward rotation clutch 19A is relaxed and switched to the reverse drive state. When the pulling operation of the mowing unit reverse rotation operating tool 106 is released, the original normal rotation driving state is restored.
The reversing mechanism 49a built in the barrel driving case 49, the transmission belt 49b spanned between the reversing output pulley 49b and the reversing pulley 18b of the cutting drive shaft 18, and the reversing clutch 19B serve as a working unit. A first reversing mechanism for reversing the mowing unit drive system of the mowing processing device 17 is configured.

[Power transmission structure by the second output unit]
An output shaft 31 as a second output portion projects from the other end side (outside the fuselage) of the engine 3, and power transmission in the second output portion is performed as follows.
As shown in FIGS. 3 and 5 to 8, the second output pulley 31 a, the third output pulley 31 b, and the fourth output pulley 31 c are integrally rotated on the output shaft 31 in order from the side closer to the engine 3. It is installed to do.

An alternator 3B is driven on the other end side (outer side of the machine body) of the engine 3 so as to rotate about a horizontal axis parallel to the axis x3 of the output shaft 31 as the second output unit. A power generation drive pulley 33 and a blower drive pulley 34 for driving a blower fan 102 of the blower mechanism 100 described later are provided.
Then, as shown in FIG. 6, the second output pulley 31a (corresponding to an output rotating body to the blower fan 102 of the blower mechanism 100), the power generation drive pulley 33, and the blower drive pulley 34 are endlessly rotated. A third transmission belt 38A composed of a single V-belt, which is an example of a moving belt, is wound, and the alternator 3B and the blower fan 102 are rotationally driven with the rotation of the second output pulley 31a. Has been.

Of the third output pulley 31b and the fourth output pulley 31c attached to the output shaft 31, the fourth output pulley 31c farthest from the engine 3 has a smaller diameter than the third output pulley 31b. .
A fifth transmission belt 38C is wound around the fourth output pulley 31c so as to transmit the driving force to the compressor 3C provided on the rear side of the engine 3.

[Transmission to radiator cooling fan]
As shown in FIGS. 5, 6, and 8, the power transmission to the radiator cooling fan 70 includes the fourth transmission belt 38 </ b> B wound around the third output pulley 31 b attached to the output shaft 31, and the engine 3. The power of the engine 3 is extracted as the driving force of the radiator cooling fan 70 via the relay shaft 55 provided at the upper rear part away from the motor and the forward / reverse rotation selection mechanism 6 described later.

The relay shaft 55 includes a relay input pulley 55a (corresponding to a driving rotary body) at an end portion on the outer side of the machine body (right end part in the left-right direction), and an end part on the inner side of the machine body (left side in the left-right direction). A pair of relay output pulleys 55b and 55c (corresponding to a drive rotator) are provided at the end). The fourth transmission belt 38B is wound around the relay input pulley 55a and the third output pulley 31b, and the rotational power of the output shaft 31 is transmitted to the relay shaft 55.
As described above, by using the relay shaft 55, the fourth transmission belt 38B is provided between the engine 3 located in the front and the radiator 7 located in the rear so that the upper part of the device mounting base 26 and the work space s1 is located. The work space s1 is arranged in a detoured state so that it can be used as a space that is easy to use for work such as maintenance.

The fourth transmission belt 38B is provided with a slack removing tension mechanism 54 on the slack side belt portion. The tension mechanism 54 includes a fixed pulley 54b pivotally supported by a support shaft 54a provided on a part of the outer support 13A of the tank support base 13. Then, a swing arm 54c that can swing around the support shaft 54a of the fixed pulley 54b is provided, and a floating pulley 54e that rotates around a support shaft 54d attached to the free end side of the swing arm 54c. ing. Further, a coil spring 54f that pulls and urges the swing arm 54c toward the slack eliminating side (upper right side in FIG. 5) is provided.
By providing the fixed pulley 54b, the swing arm 54c, the idle pulley 54e, and the coil spring 54f, a slack eliminating tension mechanism 54 that constantly urges the fourth transmission belt 38B toward the tight side is configured. Has been.

The forward transmission belt 56 (endless of the forward rotation system power transmission mechanism) spans a pair of relay output pulleys 55b and 55c on the relay shaft 55 side and a fan input pulley 72 (corresponding to an input rotator) on the radiator cooling fan 70 side. And a reverse transmission belt 57 (corresponding to an endless rotation belt of the reverse power transmission mechanism).
Of the forward transmission belt 56 and the reverse transmission belt 57, the forward transmission belt 56 is wound so that the inner peripheral surface thereof is in contact with the outer peripheral surface of the fan input pulley 72. The outer peripheral surface of the fan input pulley 72 is wound so as to be in contact with the outer peripheral surface.
The forward transmission belt 56 and the reverse transmission belt 57 arranged in this way constitute a forward / reverse selection mechanism 6 together with a pair of tension ring bodies 63 and 64. The forward / reverse selection mechanism 6 will be described later.

The forward transmission belt 56 and the reverse transmission belt 57 arranged in this way constitute a forward / reverse selection mechanism 6 (corresponding to a second reverse mechanism) together with a pair of tension wheels 63 and 64. The pair of tension ring bodies 63 and 64 can be selectively switched so that either one of the forward transmission belt 56 and the reverse transmission belt 57 is in a tension state and the other is in a slack state. It is configured.
The pair of tension ring bodies 63 and 64 are linked to a fan reverse rotation operating tool 107 provided in the operation cabin 15 via an operation wire 107a. The operation of the fan reverse operation tool 107 can be switched between a normal transmission state in which the normal transmission belt 56 is tensioned and a reverse transmission state in which the reverse transmission belt 57 is tensioned.

[Blower mechanism]
The air blowing mechanism 100 is configured as follows.
As shown in FIGS. 1, 5, and 7, exterior covers 9 are provided on both lateral sides of the self-propelled aircraft. Of the exterior cover 9, the exterior cover 9 provided on the right side of the machine body will be described.
The right exterior cover 9 is disposed so as to be located laterally outside the threshing device 4 and the engine 3, and is configured to be swingable and openable around the swing axis z1 in the front-rear direction. An upper cover part 90 and a lower cover part 91 disposed on the lateral outer side of the threshing device 4 and the engine 3 below the lower edge of the upper cover part 90 in the closed posture. ing.
The lower cover portion 91 is not swingably opened / closed around the swing axis z <b> 1 like the upper cover portion 90, but for placing and supporting the glen tank 5 so as to cover the lower side of the engine 3. The tank support 13 provided is configured to be detachable through an appropriate fitting.
Therefore, the posture can be changed between a closed posture in which the lower cover portion 91 is attached to the tank support base 13 to cover the right side portion of the airframe and an open posture removed from the tank support base 13.

As shown in FIG. 7, an air supply unit 101 including a large number of ventilation holes 101 a is formed below the front portion of the upper cover unit 90. The ventilation hole 101a is set to have a hole size and the like so as to allow ventilation while restricting the entry of dust from the outside of the upper cover 90 toward the inside of the machine body. The air hole 101 a is formed at a position facing the rotation range of the blower fan 102 of the blower mechanism 100 and has an area substantially the same as the rotation range of the blower fan 102.
A fan shroud 103 is provided on the surface of the upper cover 90 where the air supply unit 101 is formed so as to be located slightly outside the rotation radius of the blower fan 102. .
The fan shroud 103 is formed in a partial arc shape along the rotation trajectory of the blower fan 102 so as to cover the upper half side of the blower fan 102 from the upper side, and is provided in a range covering almost half of the circumference of the blower fan 102. .

The air blowing mechanism 100 is configured by combining the air supply unit 101, the air blowing fan 102, and the fan shroud 103. The air blowing mechanism 100 allows the air blowing mechanism 100 from outside the apparatus regardless of the presence of the exterior cover 9. Outside air can be sucked and blown to the engine 3 side.
This makes it possible to blow off fine dust that tends to accumulate around the engine 3, and it is easy to reduce the maintenance frequency for removing dust accumulated around the engine 3.
In addition, since the air supply unit 101 and the fan shroud 103 are provided in the upper cover unit 90, when the maintenance around the engine 3 is performed, the air supply unit can be simply changed to an open posture. 101 and the fan shroud 103 can be moved away from the engine 3. Therefore, it is advantageous in that the engine 3 can be opened widely and the number of steps for removing and attaching the air supply unit 101 and the fan shroud 103 can be omitted.

[Radiator intake case]
A radiator cooling fan 70 is provided on the inward side of the radiator 7 provided at the rear of the self-propelled airframe, and an intake case 8 is provided on the outer side of the airframe. The radiator 7 is disposed at a position on the right side of the self-propelled aircraft body, and sucks air to the outward ventilation surface 7a opposite to the side where the radiator cooling fan 70 with the fan shroud 70a is provided. Outside air is introduced from the case 8 side. A drainage drain pipe 7b used for discharging cooling water is provided at the lower part of the radiator 7.
The intake case 8 is configured by combining a lower case portion 8A disposed so as to face the outer side of the radiator 7 and an upper case portion 8B disposed so as to be positioned above the lower case portion 8A.

As shown in FIGS. 9 to 12, the lower case portion 8 </ b> A includes a portion (referred to as an inside open surface for convenience) corresponding to the surface of the radiator 7 facing the outward ventilation surface 7 a, and the opposite side. A portion corresponding to the surface (referred to as an outer open surface for convenience) is opened to form an open portion. And the circumference | surroundings of the opening part of inner and outer both sides have the surrounding surface comprised by the four surfaces which follow the outer periphery of the rectangular radiator 7, and it is formed in the substantially rectangular sideways short cylinder shape, and comprises the case main body 80. Yes.
The cover body 81 includes a cover lid member 81 facing the outer surface in a closed position so that the outer open surface of the case body 80 can be opened and closed. The combination of the case body 80 and the cover lid member 81 allows the lower case portion 8A to be opened. It is configured.
The cover lid member 81 has a non-porous plate surface 81a formed in a flat shape so as to cover the entire outer open surface of the case main body 80 and the lower portion of the upper case portion 8B, and the periphery thereof toward the body side. And an inward end edge portion 81b that is folded back. The cover lid member 81 is configured to be able to swing open and close around the vertical axis y2 by a hinge 82 attached to a side surface 80a on the front end side of the peripheral surface of the case body 80.
The inward end edge portion 81 b on the rear end side of the cover lid member 81 and the side surface 80 b portion on the rear end side of the peripheral surface of the case body 80 are connected and fixed by a buckle-type stopper 83.

An upper case portion 8B is mounted on the upper surface 80c portion of the four peripheral surfaces of the case body 80.
The upper case portion 8B has a substantially rectangular box shape as a whole, but the shape differs between the direction view along the axial direction of the radiator cooling fan 70 and the direction view intersecting with the axial direction of the radiator cooling fan 70. ing. That is, as shown in FIG. 9, the whole is formed narrower than the lower case portion 8 </ b> A in a side view (a direction view along the axis of the radiator cooling fan 70). Furthermore, it is formed in a deformed trapezoidal shape that is vertically long with the upper side being narrower than the lower side, and the rear side is inclined rearwardly downward.
Further, in the rear view (in a direction intersecting with the axis of the radiator cooling fan 70), as shown in FIG. 10, the lower side is formed to have the same width as the horizontal width of the lower case portion 8A, and the upper side is the lower side. It is formed in a wide shape projecting toward the airframe side with respect to the side, and has a lateral width greater than the lateral width of the lower case portion 8A.

The upper case portion 8B has air inlets 84 for introducing outside air on the front, rear, left and right surfaces.
That is, in the intake case 8 disposed adjacent to the radiator 7, the lateral outer surface 8Ba of the upper case portion 8B on the side opposite to the side where the radiator 7 exists in the horizontal direction is configured by punching metal or mesh. An air inlet 84 for ventilation is formed. A similar intake port 84 is also formed on the lateral inner side surface 8Bb facing the inward side of the aircraft body, which is the same side as the side where the radiator 7 exists in the horizontal direction, on the opposite side to the lateral outer side surface 8Ba. .
In addition, punching metal is similarly applied to each of the front side surface 8Bc facing the front side of the body and the rear side surface 8Bd facing the rear side of the body, which is located between the lateral outer surface 8Ba and the lateral inner side surface 8Bb. Or the ventilation inlet 84 comprised with a mesh is formed.

  The upper case portion 8B is arranged at a position higher than the waste wall treatment apparatus 16 provided at the rear end portion of the self-propelled aircraft body. Further, in the upper case portion 8B, a portion corresponding to the vicinity of the lower portion is formed in the non-porous cylindrical portion 85, and the intake port 84 is formed at a position higher than the non-porous cylindrical portion 85. ing. And the lower end edge of the air inlet 84 is set to the same height as the upper end edge of the rear cover 4B provided on the rear side of the threshing device 4 and the upper end edge of the cover lid member 81 of the lower case portion 8A. . The height of the upper end portion of the upper case portion 8B is set to be approximately equal to or less than the height of the upper end edge in the non-tilting state of the Glen tank 5 existing on the front side thereof.

There are locations where the lower case portion 8A and the upper case portion 8B configured as described above are opposed to each other, that is, where the upper surface 80c of the four peripheral surfaces of the case body 80 is opposed to the lower surface of the upper case portion 8B. In each case, a ventilation opening 86 having substantially the same rectangular shape and substantially the same size is formed.
As shown in FIGS. 9 to 12, an L-shaped mounting bracket 87 attached to the outer side of the lower end portion of the lateral outer surface 8 </ b> Ba of the upper case portion 8 </ b> B is provided at the periphery of the ventilation opening 86. It is fixed to the outside by welding. A connecting hole 87a with a fixing nut facing the connecting hole formed on the downward surface side of the mounting bracket 87 is formed at the right lateral outer end of the upper surface 80c of the case body 80, and can be connected and fixed by a connecting bolt 87b. Has been.
On the rear side of the ventilation opening 86, an upright protruding piece 88 having an L-shaped cross section is welded and fixed to the upper surface 80c of the case body 80 so as to face the inside of the lower end portion of the rear side surface 8Bd of the upper case portion 8B. A connecting hole 88a with a fixing nut facing the connecting hole formed in the upright projecting piece 88 is formed in the cylindrical portion 85 of the rear side surface 8Bd, and can be connected and fixed by a connecting bolt 88b.
Accordingly, the inner surface of the lower end portion of the rear side surface 8Bd of the upper case portion 8B is applied to the outer side of the upright protruding piece 88 so as to face the connecting hole 88a of the rear side surface 8Bd, and the mounting bracket 87 outside the lower end portion of the lateral outer side surface 8Ba is attached to the case. The upper case part 8B is fixed in a state of being erected on the upper side of the lower case part 8A by being placed so as to face the connection hole 87a on the upper surface 80c of the main body 80 and connected by connection bolts 87b and 88b. be able to.

  On the front side surface 8Bc of the upper case portion 8B, a connection bracket 89 that can be connected and fixed to the support member 5B that supports the swing support shaft 52 having the swing shaft center z2 of the Glen tank 5 is provided on the cylindrical portion 85. It is connected from the outside forward. By connecting the connection bracket 89 to the support member 5B, it is possible to connect and fix the middle part of the upper case portion 8B in the vertical direction, and it is easy to support it stably.

  Of the case main body 80 of the lower case portion 8A, the bottom surface 80d is provided with an opening 80e so as to open a part of the bottom surface 80d, and an openable / closable lid 80f for closing the opening 80e is also provided. It is. As a result, when there is a need for maintenance such as accumulation of dust and dust inside the case main body 80 of the lower case portion 8A, the cover lid member 81 is opened to get inside the case main body 80. Thus, it is easy to easily perform operations such as opening the lid 80f and dropping and removing straw scraps and dust inside the case body 80.

In the intake case 8, the lower part of the front end side of the lower case part 8 </ b> A is supported by a support bracket 13 </ b> Aa extending rearward from the outer support 13 </ b> A on the rear side of the tank support 13. The rear lower portion of the lower case portion 8A is supported by a case support leg 10a that is erected from a rear wheel support frame 10 for supporting the rear wheel 2R at the rear end portion of the body frame 1. The lower portion of the radiator 7 is also connected and fixed to the case support leg 10a (see FIG. 10).
The upper side of the lower case portion 8A is attached to the upper frame 13C of the tank support base 13, and the lower case portion 8A and the radiator 7 are connected to each other with a sealing material 7c interposed around the ventilation surface 7a. It is connected.

[Forward / reverse selection mechanism]
The transmission system of the radiator cooling fan 70 for cooling the radiator 7 is interposed with a forward / reverse selection mechanism 6 configured as follows.
As shown in FIGS. 16 to 18, the forward / reverse selection mechanism 6 has a forward transmission belt 56 and a reverse transmission belt with respect to a fan input pulley 72 around which the forward transmission belt 56 and the reverse transmission belt 57 are wound. The transmission state is selected so that either one of the powers 57 and 57 is not transmitted. Thus, by transmitting the power of either the forward transmission belt 56 or the reverse transmission belt 57, the rotation direction of the fan input pulley 72 is switched between the forward rotation direction and the reverse rotation direction. belongs to.
The forward rotation direction of the fan input pulley 72 is a direction in which the air blowing direction by the radiator cooling fan 70 is directed from the lateral side outward to the inward side and the suction action by the radiator cooling fan 70 acts on the radiator 7. The reverse rotation direction is a direction in which the air blowing direction by the radiator cooling fan 70 is directed in the opposite direction. In this reverse direction, the air blowing direction by the radiator cooling fan 70 is directed from the body side to the outside side, and dust attached to the ventilation surface 7a existing on the lateral side outside the body of the radiator 7 can be blown to the outside. .

As shown in FIGS. 9 to 15, the fan input pulley 72 installed closer to the body side than the radiator 7 is supported by a fan mounting base 74 erected on the vehicle body frame 1.
The fan mounting base 74 is a post 74A attached along the side of the rear wheel support frame 10 provided at the rear end of the vehicle body frame 1 on the inward side of the vehicle body, and a flat plate shape provided at the upper end of the post 74A. The seat plate 74B is provided. The board 75 mounted on the upper surface side of the seat plate 74B, the rectangular tube-shaped member 76 disposed along the front-rear direction on the upper side of the substrate 75, and the plate surface on the upper surface side of the rectangular tube-shaped member 76 A mounting plate 77 standing up along the front-rear direction is fixed by welding. The seat plate 74B and the substrate 75 are connected and fixed so as to be detachable with connecting bolts with their plate surfaces abutting each other.

As shown in FIGS. 13 to 18, a support shaft 71 for pivotally supporting the fan input pulley 72 is fixed to the mounting plate 77 while penetrating the plate surface of the mounting plate 77. That is, a connecting plate 73 having a hook-shaped contact surface facing the mounting plate 77 is welded and fixed to the support shaft 71, and the connecting plate 73 is bolted to the mounting plate 77 with the connecting plate 73 in contact therewith. It is.
A swing plate 60 is attached to a portion of the support plate 71 that is bolt-connected to the mounting plate 77 and protrudes outward from the machine body of the mounting plate 77. The swing plate 60 includes arm portions 60A and 60B extending in two directions away from the axis p2 of the support shaft 71. One arm portion 60A is provided with a support shaft 63a of a first tension ring body 63 acting on the forward transmission belt 56, and the other arm portion 60B is provided with a second tension ring body acting on the reverse transmission belt 57. 64 support shafts 64a are provided.
An operating arm 62 for swinging the swing plate 60 about the axis p2 of the support shaft 71 is connected and fixed to one arm portion 60A.

The swing plate 60 is formed with a projecting pin 61 projecting toward the mounting plate 77 side. The head of the connecting pin 61 can be fitted on the mounting plate 77 side, and A long hole 77a is formed in a predetermined range along the arc locus of the linking pin 61 around the axis p2.
Therefore, when the linking pin 61 of the swing plate 60 is fitted into the long hole 77a of the mounting plate 77, the swing plate 60 is moved within the predetermined range of the long hole 77a as the operating arm 62 swings. Thus, it can be swung around the axis p2 of the support shaft 71.

As shown in FIG. 8, in the swing plate 60, the arm portion 60A to which the first tension ring body 63 is attached is more attached than the arm portion 60B to which the second tension ring body 64 is attached. It is located away from the plate 77 and on the outer side of the fuselage.
Further, as shown in FIGS. 15 to 18, the arm portion 60A to which the first tension ring body 63 is attached is turned to the side (in the clockwise direction in FIG. 7) on which the forward transmission belt 56 is tensioned. A locking piece 66a for locking the coil spring 66 (corresponding to the biasing mechanism) to be biased is provided. The other end side of the coil spring 66 is connected to the support post 74A of the fan mounting base 74, and is stretched so that a biasing force to the side that always tensions the normal transmission belt 56 acts on the swing plate 60. is there.

The reverse transmission belt 57 is provided so as to be wound around the third tension ring body 65 in addition to the second tension ring body 64.
The third tension ring body 65 is pivotally supported by a support shaft 65 a provided on the mounting plate 77, and is not changed in position by the swinging operation of the operating arm 62, but is fixed on the mounting plate 77. It is provided.
As shown in FIGS. 16 and 17, the second tension ring body 64 and the third tension ring body 65 include a shaft center p <b> 1 of the relay output pulleys 55 b and 55 c that are drive rotating bodies and a fan that is an input rotating body. The input pulley 72 is arranged in a state of being distributed on both sides of an imaginary line segment L1 that connects the axis p2 of the support shaft 71 that is the rotation center of the input pulley 72.

The forward transmission belt 56 is wound around the relay output pulley 55b on the outer side of the machine body, the fan input pulley 72, and the first tension ring body 63 among the relay output pulleys 55b and 55c that are drive rotating bodies. Yes. The relay output pulley 55 b, the fan input pulley 72, and the first tension ring body 63 are all disposed so as to be in contact with the inner peripheral side of the normal rotation transmission belt 56.
Therefore, as shown in FIG. 16, when the operating arm 62 is operated to the “forward rotation” position indicated by the solid line, the swing plate 60 swings clockwise, and the forward drive belt 56 is tensioned. The first tension ring body 63 is moved. The position of the first tension ring body 63 is maintained so as to be in the forward transmission state even when the operation with respect to the operation arm 62 is released by the urging force of the coil spring 66 acting.
At this time, the arm portion 60 </ b> B of the swing plate 60 that supports the second tension ring body 64 swings (swings clockwise) to loosen the reverse transmission belt 57, and power is transmitted by the reverse transmission belt 57. Is in a state that is not performed.

The reverse transmission belt 57 includes a relay output pulley 55c, a fan input pulley 72, a second tension ring body 64, and a third tension ring body among the relay output pulleys 55b and 55c that are driving rotary bodies. It is wound over 65.
Among these, the relay output pulley 55c, the second tension ring body 64, and the third tension ring body 65 are in contact with the inner peripheral side of the reverse transmission belt 57, and the fan input pulley 72 is in contact with the outer peripheral side of the reverse transmission belt 57. Thus, the reverse transmission belt 57 is wound.
Accordingly, as shown in FIG. 17, when the operating arm 62 is operated to the “reverse rotation” position, the swing plate 60 swings counterclockwise against the biasing force of the coil spring 66 and the reverse transmission belt 57 is moved. The second tension ring body 64 is moved to the tension side. The reverse transmission belt 57 that is tensioned in this state is in the reverse transmission state.
At this time, the arm portion 60 </ b> A of the swinging plate 60 that supports the first tension ring body 63 swings (swings counterclockwise) to the side that loosens the normal transmission belt 56, and the normal transmission belt 56. The power transmission by is not performed.

As described above, the forward output power transmission mechanism is configured by including the relay output pulley 55b, the fan input pulley 72, the first tension ring body 63, and the normal transmission belt 56, and the relay output pulley 55c and the fan input pulley 72 are configured. The reverse tension power transmission mechanism includes the second tension ring body 64, the third tension ring body 65, and the reverse rotation transmission belt 57.
The forward / reverse selection mechanism 6 causes the forward drive belt 56 of the forward drive power transmission mechanism and the reverse drive belt 57 of the reverse drive power transmission mechanism to swing the swing plate 60 by operating the operation arm 62, It is constituted by a tension clutch capable of intermittently motive power by selectively selecting and tensioning or relaxing.
The swing operation of the swing plate 60 by the operation of the operation arm 62 is continued even when the operation force by the operation arm 62 is released by the biasing force of the coil spring 66 while the switching state to the forward rotation side is maintained. The operation to the reverse side is continued only while the swinging plate 60 is swung by the operation of the operation arm 62. When the operation by the operation arm 62 is released, the forward rotation is performed by the biasing force of the coil spring 66. The drive is automatically restored.

  A reference numeral 67 shown in FIGS. 13 to 18 is a rod-shaped anti-slip guide provided integrally with the swing plate 60, and a reference numeral 68 is a plate-like anti-skid guide bent into an L shape. Reference numeral 77 b denotes a rod-shaped detachment prevention guide provided on the mounting plate 77. These are all for preventing the forward transmission belt 56 or the reverse transmission belt 57 from coming off.

For the forward transmission belt 56 and the reverse transmission belt 57 stretched across the pair of relay output pulleys 55b, 55c on the relay shaft 55 side and the fan input pulley 72 on the radiator cooling fan 70 side, the forward transmission A belt guide 69 for guiding the belt 56 and the reverse transmission belt 57 is provided.
The belt guide 69 does not come into contact with the forward transmission belt 56 or the reverse transmission belt 57 in a state of being tensioned in the driving state with respect to the forward transmission belt 56 and the reverse transmission belt 57, and is not less than a predetermined amount. When slack occurs, it is configured to support it from below. By doing so, it is possible to avoid a state in which the slack reverse rotation transmission belt 57 or the normal rotation transmission belt 56 droops greatly and comes into contact with the forward rotation transmission belt 56 or the reverse rotation transmission belt 57 that is being driven. It is. As a result, it is possible to reduce the possibility that the slack reverse rotation transmission belt 57 or the normal rotation transmission belt 56 contacts the driving normal rotation transmission belt 56 or the reverse rotation transmission belt 57 and wears each other.

  Specifically, as shown in FIGS. 16, 17, and 19, the belt guide 69 does not contact as indicated by the phantom line during the driving of the reverse transmission belt 57, and the forward transmission belt 56 is driven. When the reverse transmission belt 57 is in a non-driven state, the slack side and the tension side of the reverse transmission belt 57 are supported as indicated by the solid line on the lower side when a predetermined amount of slack occurs. The 1st support part 69a and the 2nd support part 69b for carrying out are provided. On the reverse transmission belt 57 side, the side in contact with the fan input pulley 72 on the outer peripheral side of the reverse transmission belt 57 is the tension side, and the side in contact with the third tension ring body 65 on the inner peripheral side is the loose side.

Further, the belt guide 69 allows the slack side of the normal transmission belt 56 to be seen from below when a slack of a predetermined amount or more occurs on the slack side of the normal transmission belt 56 with respect to the normal transmission belt 56 side. A third support portion 69c is provided for support as indicated by the phantom line.
Since the first support portion 69a, the second support portion 69b, and the third support portion 69c are provided in this manner, either the forward transmission belt 56 or the reverse transmission belt 57 is loosened when switching between forward and reverse rotation. When this occurs, the slack forward rotation transmission belt 56 or the reverse rotation transmission belt 57 is prevented from drooping more than necessary.

As shown in FIGS. 16 and 17, an adjustment ring body 79 for removing slack is provided on the tension side of the forward transmission belt 56, as shown in FIGS. 16 and 17.
The adjustment wheel body 79 can be vertically changed with respect to the support member 78 erected from the front end portion of the rectangular tubular member 76 fixed to the fan mounting base 74 toward the upper frame 13C of the tank support base 13. It is attached.
The adjusting ring body 79 is positioned below the tension side of the normal transmission belt 56 so that when the normal transmission belt 56 is loosened, drooping due to the slack of the normal transmission belt 56 can be limited. Just place it. The adjusting wheel 79 does not need to be in particular contact with the forward transmission belt 56 in a tension state, but when the longer forward transmission belt 56 is used, or when the forward transmission belt 56 is extended. In the case of loosening, the position for bringing the forward transmission belt 56 into a tension state may be adjusted in order to remove the slack.

The relay shaft 55 is attached to the upper frame 13C of the tank support 13 in a suspended state via an attachment bracket 13D.
A pair of relay output pulleys 55b and 55c provided on the relay shaft 55 is provided with a detachment prevention guide 58 as shown in FIGS.
The detachment prevention guide 58 faces the outer periphery of the relay output pulleys 55b and 55c, and is provided along the outer periphery of the relay output pulleys 55b and 55c on the front side of the machine body in a side view. The shape of the anti-separation guide 58 in a side view is formed so as to be along substantially half of the outer circumference of the relay output pulleys 55b and 55c while refracting the plate material into a polygonal shape.

The polygonal locking guide 58 is bolted to the mounting bracket 13D via a pair of mounting pieces 58a, 58a provided on both sides of the corner of the upper end.
Further, as shown in FIG. 21, the upper end portion and the lower end portion of the polygonal locking guide 58 are connected by relay output pulleys 55b and 55c and a U-shaped bent bar 58b that bypasses the relay shaft 55. Therefore, the strength of the detachment prevention guide 58 is increased.

[Other Embodiment 1]
In the above-described embodiment, the Glen tank 5 disposed above the threshing device 4 is configured to be tiltable around the swing axis z2 provided on one end side in the left-right direction, and the swing axis. Although the grain discharge port 5A that can be opened and closed is provided on the side where z2 is provided and the grain is discharged in the tilted posture, the structure is not limited to this.
For example, as shown in FIG. 23, the storage tank may be discharged by providing an unloader 5 </ b> C for discharging the storage without providing the grain discharge port 5 </ b> A that can be opened and closed in the Glen tank 5.
If comprised in this way, it is possible to discharge | emit a grain, without providing the grain discharge port 5A which can be opened and closed in the glen tank 5, or providing the dump cylinder 53 for tilting the glen tank 5. .
However, in the Glen tank 5 provided with the unloader 5C, the dump cylinder 53 may be provided so as to smoothly collect the storage existing at the bottom of the tank body 51 to the side where the unloader 5C exists.

The unloader 5C includes a vertical transfer cylinder 110 raised in the direction of lifting the storage from the front wall portion of the Glen tank 5, and a horizontal transfer cylinder extended from the upper end of the vertical transfer cylinder 110 in a laterally falling direction. 111 and a discharge portion 112 that discharges the stored material from the front end portion of the horizontal conveyance cylinder 111.
The horizontal conveying cylinder 111 has its longitudinal direction directed to the lateral outer side of the self-propelled machine body, and the storage unit discharge posture in which the discharge unit 112 is located laterally away from the self-propelled machine body and the longitudinal direction of the horizontal conveying cylinder 111 are As shown in FIG. 23, it is configured such that the posture can be changed to the retracted posture directed toward the rear side along the self-propelled aircraft.
When the horizontal conveying cylinder 111 is in the retracted position in this way, the discharge unit 112 passes over the upper case portion 8B of the intake case 8 and is behind the upper case portion 8B and above the discharge wall processing device 16. Configured to be located. At this time, since the upper case portion 8B is narrower than the lower case portion 8A and the rear surface side of the upper case portion 8B is formed in a deformed trapezoidal shape, the length of the horizontal conveying cylinder 111 in the front-rear direction Can be set as short as possible, which is effective in achieving compactness.
Other configurations may be the same as those in the above-described embodiment.

[Second embodiment]
In the above-described embodiment, the intake case 8 has a structure in which the upper case portion 8B and the lower case portion 8A are configured separately, but is not limited thereto. For example, the upper case portion 8B and the lower case portion 8A may be configured as an integral case.
Further, the shape of the upper case portion 8B and the lower case portion 8A is not limited to a rectangular box shape, and for example, an appropriate shape such as a triangular cylindrical shape, a polygonal cylindrical shape, or a cylindrical shape can be adopted. It is.
Other configurations may be the same as those in the above-described embodiment.

[3 of another embodiment]
In the above-described embodiment, the upper case portion 8B has a vertically long shape in which the upper side is narrower than the lower side in a direction view along the axial center of the radiator cooling fan 70, but is not limited thereto. Absent. For example, the lower side and the upper side may have the same width, or conversely, the upper side may be wider than the lower side.
Other configurations may be the same as those in the above-described embodiment.

[4 of another embodiment]
In the above-described embodiment, the intake port 84 of the upper case portion 8B has a structure formed on all the front, rear, left and right surfaces, but is not limited to this. For example, the intake port 84 may be provided only on a part of the front, rear, left, and right surfaces.
Other configurations may be the same as those in the above-described embodiment.

[5 of another embodiment]
In the above embodiment, the reaping portion reverse rotation operation tool 106 and the fan reverse rotation operation tool 107 are structured so as to be operated in the reverse rotation state only during the pulling operation and to return to the normal rotation state when the pulling operation is released. Although shown, it is not limited to this.
For example, although not shown, the reverse rotation state and the normal rotation state may be alternately switched each time a pulling operation is performed.
Other configurations may be the same as those in the above-described embodiment.

[6 of another embodiment]
In the above-described embodiment, the traveling device 2 is configured such that the front wheel 2F is configured by a non-steering wheel and the rear wheel 2R is configured by a steering wheel. However, the present invention is not limited thereto, and for example, the front wheel 2F is steered. The rear wheel 2R may be a non-steering wheel. Moreover, you may comprise both the front wheel 2F and the rear wheel 2R with a steering wheel.
Other configurations may be the same as those in the above-described embodiment.

[7 of another embodiment]
In the above embodiment, the traveling device 2 has a structure in which the front wheel 2F is a driving wheel constituted by non-steering wheels and the rear wheel 2R is constituted by steering wheels that are not driven. It is not limited.
For example, the front wheels 2F are steered wheels that are not driven, the rear wheels 2R are non-steered drive wheels, or both the front wheels 2F and the rear wheels 2R are steered wheels, The rear wheel 2R may be configured to be driven together.
Other configurations may be the same as those in the above-described embodiment.

[8 of another embodiment]
In the above embodiment, the front traveling unit is configured with the front wheel 2F including non-steering wheels, and the rear traveling unit is configured with the rear wheel 2R including steering wheels. The front traveling unit may be configured by a semi-crawler type crawler traveling device, and the rear traveling unit may be configured by a rear wheel 2R including steering wheels. Conversely, the front traveling unit may be configured by a front wheel 2F made of steered wheels, and the rear traveling unit may be configured by a semi-crawler type crawler traveling device.
In this case, the semi-crawler type crawler traveling device is driven, and the rear wheel 2R or the front wheel 2F constituted by the steering wheels may be non-driven, or the semi-crawler type crawler traveling device and the steering The rear wheel 2R or the front wheel 2F constituted by wheels may be driven together.
Other configurations may be the same as those in the above-described embodiment.

[9 of another embodiment]
In the above embodiment, the structure having the driving cabin 15 as the driving portion is exemplified in the above embodiment, but the present invention is not limited to this, and the driving portion is not provided with the driving cabin 15 and is simply provided. It may be provided only with the steering handle 15a and the driver's seat 15b.
Other configurations may be the same as those in the above-described embodiment.

[10 of another embodiment]
In said embodiment, the thing of the structure using the output pulley 30 as an engine output rotary body, the input-output pulley 22 as an input rotary body and an output rotary body, and the threshing input pulley 41b as a threshing side rotary body was shown. However, the output or input rotating body is not limited to a pulley, and may be a sprocket, for example. In that case, a transmission chain may be used in place of the transmission belts 32A and 32B in the transmission endless rotation band. Similarly, in a transmission structure using an endless rotation band in other places such as the threshing device 4, a transmission chain may be employed instead of the transmission belt.
Other configurations may be the same as those in the above-described embodiment.

[11 of another embodiment]
In the above-described embodiment, the waste straw processing apparatus 16 including the waste straw chopper capable of shredding the waste straw is shown as the waste straw portion, but the invention is not limited thereto. For example, a cutting device different from the waste straw chopper may be provided, a device for dropping and discharging may be provided, or a waste outlet outlet for simply discharging the waste straw may be provided.

  The harvesting machine shown in the present invention is not limited to a combine that harvests grains such as rice, wheat, and corn, but can also be applied to harvesting beans such as soybeans and flower varieties such as rapeseed. Moreover, not only a normal type combine but a self-removal type combine may be sufficient.

DESCRIPTION OF SYMBOLS 3 Engine 4 Threshing apparatus 5 Glen tank 5C Unloader 7 Radiator 8 Intake case 8A Lower case part 8B Upper case part 9 Side cover 14 Fuel tank 15 Operation part 16 Exhaust part 70 Radiator cooling fan 81 Cover cover member 84 Inlet 100 Air blower Mechanism 102 Blower fan 110 Vertical conveyance cylinder 111 Horizontal conveyance cylinder 112 Discharge part s1 Work space

Claims (16)

With radiator,
A radiator cooling fan,
An intake case into which outside air for cooling with respect to the radiator is introduced;
The intake case includes a lower case portion adjacent to the radiator, and an upper case portion extending from the lower case portion to the upper side of the radiator,
A harvesting machine in which an air inlet for introducing outside air is formed in the upper case part, and the width of the upper case part as viewed in the axial direction of the radiator cooling fan is set narrower than that of the lower case part.   The harvester according to claim 1, wherein the intake port is formed on a surface of the upper case portion opposite to a side where the radiator is present in the horizontal direction.   The harvesting machine according to claim 1 or 2, wherein the intake port is formed on a surface of the upper case portion on the same side as the side where the radiator is present in the horizontal direction.   In the upper case portion, the intake port is formed on a surface that is located across the surface on the same side as the side where the radiator is present in the horizontal direction and the surface opposite to the side where the radiator is present. The harvesting machine according to any one of claims 1 to 3.   The upper case part is provided with a surface wider in the axial direction than the lower case part, and the intake port is provided on the surface formed wider. Harvesting machine.   The said upper case part is a harvester as described in any one of Claims 1-5 provided in the state biased to the one side with respect to the said lower case part in the horizontal direction.   The lower case part is provided with an opening that opens on the side opposite to the side facing the radiator, and a cover lid member that covers the opening is configured to be openable and closable. The harvesting machine described. A threshing device mounted on a self-propelled machine body, the radiator cooling fan is disposed on the lateral side of the threshing device, and the radiator is disposed on the lateral side of the radiator cooling fan,
The harvester according to any one of claims 1 to 7, wherein the upper case portion is configured such that the intake port is positioned at a position above the radiator.   An exhaust wall is provided at the rear of the threshing device, and the radiator is positioned laterally of the exhaust wall at a location near the rear of the self-propelled aircraft body, and the upper case is above the exhaust wall. The harvesting machine according to claim 8, which is extended to   The harvesting machine according to claim 8 or 9, wherein an engine is disposed in front of the radiator, and an air blowing mechanism that blows outside air toward the engine is provided at an outer portion of the engine. An engine is disposed in front of the radiator, and a working space is provided between the engine and the radiator. A side cover that covers a lateral outer side of the working space at a lateral outer side of the working space. The harvesting machine according to claim 8, wherein the side cover is configured to be openable.   The harvester according to any one of claims 8 to 11, wherein a grain tank is disposed above the radiator, and the upper case portion is disposed at a position adjacent to the grain tank.   The Glen tank is disposed so as to extend over an engine disposed in front of the radiator, the radiator, and the threshing device, and the upper case portion is disposed at the rear of the Glen tank. 12. Harvesting machine according to 12.   The harvester according to claim 12 or 13, wherein an operation unit is provided on the front side of the Glen tank.   The harvester according to any one of claims 12 to 14, wherein a fuel tank is disposed below the Glen tank and on a side opposite to the side where the intake case is provided. The Glen tank is provided with an unloader for discharging stored matter,
The unloader includes a vertical transfer cylinder raised in a direction to lift the storage from the front wall of the Glen tank, a horizontal transfer cylinder extending in a laterally falling direction from an upper end portion of the vertical transfer cylinder, and the horizontal transfer A discharge portion for discharging the stored matter from the tip of the cylinder, and a storage discharge posture in which the horizontal conveyance cylinder is directed to the lateral outer side of the self-propelled aircraft, and the horizontal conveyance cylinder is rearward along the self-propelled aircraft It is configured so that the posture can be changed to the retracted posture toward the side,
The said discharge part of the said unloader is comprised so that it may be located in the back position rather than the said upper case part in the upper position of the waste wall part provided in the back of the said threshing apparatus in the said storing attitude | position. The harvester according to any one of the above.

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