JP2009153478A - Combine harvester - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a combine harvester capable of suppressing a noise by a suction sound of a pre-cleaner. <P>SOLUTION: The combine harvester includes a driving part arranged in the upper part of a prime mover part, a grain storage part arranged at the rear of the driving part, and a threshing part arranged in a lateral side of the grain storage part. In the combine harvester, since the suction starting end of a suction flow channel extending from the prime mover part is arranged between the grain storage part and the threshing part, the suction starting end to be a suction sound source offensive to the ear can be isolated from an operator sitting in the driving part, and the noise level can be reduced or eliminated. As a result, the working environment of the operator can be improved. <P>COPYRIGHT: (C)2009,JPO&INPIT

Description

  The present invention relates to a combine, and more particularly to the arrangement of an intake mechanism in a prime mover portion of the combine.

Conventionally, as one form of combine, an operation unit is disposed above the motor unit, a grain storage unit is disposed behind the operation unit, and a threshing unit is disposed on the side of the grain storage unit. There is what I did. In such a combine, the intake passage is extended from the prime mover into a space formed between the operation unit and the grain storage unit, and the pre-cleaner is placed at the top of the intake start end. It is provided above the storage part (see, for example, Patent Document 1).
JP 2002-70677 A

  However, in the above-described combine, a precleaner is arranged behind the worker seated in the driving section, and there is no shielding between the worker and the precleaner. The inhalation sound is annoying noise. Further, since the pre-cleaner is provided above the grain storage unit, the pre-cleaner is used when the grain carrying out auger connected to the grain storage unit is turned (rotated in a substantially horizontal plane). May be an obstacle.

  The present invention has been made to solve the above-described problem, and an object of the present invention is to provide a combine that can suppress noise due to the intake sound of a precleaner.

  According to the first aspect of the present invention, an operation unit is disposed above the motor unit, a grain storage unit is disposed behind the operation unit, and a threshing unit is disposed on the side of the grain storage unit. In the combine which is provided, the intake start end portion of the intake flow path extending from the prime mover portion is disposed between the grain storage portion and the threshing portion.

  In the invention according to claim 2, the intake start end portion of the intake flow path is located equal to or lower than the upper surface of the grain storage portion, and is positioned higher than the upper surface of the threshing portion. The combine according to claim 1.

  The invention described in claim 3 is characterized in that a silencer is provided in the middle of the intake passage, and the silencer is disposed between the operating part and the grain storage part. It is a combine.

  (1) In this invention of Claim 1, an operation part is arrange | positioned above a motor part, a grain storage part is arrange | positioned behind the operation part, and threshing is carried out to the side of the grain storage part. In the combine provided with the portion, the intake start end portion of the intake passage extending from the prime mover portion is disposed between the grain storage portion and the threshing portion.

  In this way, since the intake start end of the intake flow path is disposed between the grain storage unit and the threshing unit, the intake start end serving as an annoying intake sound source is separated from the worker seated in the driving unit. The noise level can be reduced or eliminated. As a result, the work environment of the worker can be improved.

  (2) In the present invention described in claim 2, the intake start end portion of the intake flow passage is positioned equal to or lower than the upper surface of the grain storage portion, and is positioned higher than the upper surface of the threshing portion. It is arranged.

  Thus, since the intake start end portion of the intake flow path is located at the same level as or lower than the upper surface of the grain storage unit, when turning the grain carrying out auger connected to the grain storage unit The intake start end is not hindered. Moreover, since the intake start end portion of the intake flow channel is located above the top surface of the threshing portion, even when the ceiling portion opening / closing body is provided in the threshing portion, This can prevent the opening / closing operation from being hindered.

  (3) In this invention of Claim 3, while providing a silencer in the middle part of an intake flow path, the silencer is arrange | positioned between the operation part and the grain storage part.

  In this way, the intake channel length between the silencer disposed between the operation unit and the grain storage unit and the intake start end of the intake channel disposed between the grain storage unit and the threshing unit is increased. Since it can be ensured, the silencing effect due to the intake flow path length can be improved.

  The combine according to the present embodiment has, as a basic structure, a driving unit disposed above the prime mover unit, a grain storage unit disposed behind the driving unit, and a threshing on the side of the grain storage unit. The part is arranged.

  And as a characteristic structure, the intake start part of the intake flow path extended from a motor part is arrange | positioned between the grain storage part and the threshing part.

  Below, the combine in this embodiment is demonstrated, referring drawings.

  A shown in FIG. 1 is a combine according to the present invention. The combine A has a body frame 2 mounted on a pair of left and right crawler-type traveling sections 1, and a cutting is performed at the front end of the body frame 2. The part 3 is attached, the threshing part 4 is arranged on the left front part on the body frame 2, and the sorting part 5 is arranged at a position directly below the threshing part 4, while the rear upper part of the sorting part, A waste disposal unit 6 is disposed immediately after the threshing unit 4. 31 is a cutting blade.

  As shown in FIG. 1, the combine A has a prime mover portion 7 disposed on the right front portion on the vehicle body frame 2, and an operation portion 8 is disposed immediately above the prime mover portion 7. The grain storage part 9 (Glenn tank 10) is arrange | positioned in the position immediately after 8. FIG.

  Next, the structure of each part of the combine A will be described with reference to FIGS.

  As shown in FIG. 1, the traveling unit 1 has a traveling frame 35 attached to the lower part of the vehicle body frame 2, and the driving wheel 21 is linked and connected to the front end of the traveling frame 35, while the traveling unit 35 is idled at the rear end of the traveling frame 35. A wheel 22 is rotatably supported, and a crawler belt 23 is wound between the drive wheel 21 and the idle wheel 22. In the figure, 24 is a rolling wheel.

  The reaping part 3 reaps the cereal vegetation vegetated in the field, and feeds the harvested cereal to the rear upper side by a cereal conveyance mechanism (not shown) provided in the reaping part. Have passed on.

  The threshing unit 4 is provided with a handling cylinder (not shown) in the handling chamber, and a crimp net (not shown) is stretched directly below the handling cylinder. Is provided with a processing cylinder.

  The sorting unit 5 arranges a sorting body (not shown) in a position below the handling cylinder and the processing cylinder provided in the threshing unit 4 so as to swing back and forth, and is threshed by the handling cylinder and the processing cylinder and supplied. The cereals to be collected are received by the sorting body, and sorted into the first item for collection and the second item for re-sorting.

  As shown in FIGS. 1 and 2, the waste disposal processing unit 6 receives the grain straw conveyed rearward by the grain waste transporting unit (not shown) as waste and transports it gradually toward the center. A body (not shown), and a waste cutter (not shown) that shreds the waste transported by the waste transport body.

  The grain storage part 9 has arrange | positioned the glen tank 10 behind the operation part 8 mentioned later. The Glen tank 10 stores the first grain selected by the sorting unit, and can appropriately carry out the stored first grain by a grain carrying-out unit 32 described later.

  The grain unloading part 32 lays a horizontal unloading screw conveyor body (not shown) extended to the lower part in the grain storing part 9 with the axis line in the front-rear direction, and the rear of the horizontal unloading screw conveyor. Grain unloading with a vertical conveying screw conveyor (not shown) with the lower end connected to the end in a vertical direction with the axis line oriented vertically, and the rear end connected to the upper end of the vertical conveying screw conveyor. The auger 33 is extended forward, and is rotatable and vertically rotatable around the rear end.

  The waste transporting body 11 has a start side located on the left side and a narrow side located opposite to the waste transport with the end side located in the center and extended in the transport direction below the waste transport chain. The narrow bar is elastically biased upward via an elastic body (not shown) by a pair of front and rear support pieces (not shown) extending in the vertical direction. Let me support you.

  The driving unit 8 is disposed at the right front portion of the vehicle body frame 2. As shown in FIG. 2, the driving unit 8 is provided with a steering handle 25 in the front operation column 26, a driver seat 20 is disposed at a rear position of the steering handle 25, and the driver seat 20 is positioned on the left side of the driver seat 20. A clutch lever 27 and the like are provided on the arranged side operation column 28.

  As shown in FIGS. 1 and 2, the prime mover unit 7 has an engine E disposed in an engine room R formed below the driver's seat 20, and an intake port 17 of the engine E as shown in FIG. From the start end of the intake flow path, outside air is taken in from the upper end of the intake path and used for combustion in the engine E, while the exhaust path 18 ( The tail pipe 30) is extended so that the exhaust gas is discharged from the end of the exhaust flow path.

  In the configuration as described above, the gist of the present invention is that the intake start end portion (precleaner 12) of the intake flow path extending from the prime mover portion 7 is disposed between the glen tank 10 and the threshing portion 4. .

  Specifically, as shown in FIGS. 3 and 4, an engine room R is provided below the driver's seat 20, and an engine E is disposed in the engine room R. The engine E includes an intake port portion 17 for sucking air into the combustion chamber, and an exhaust port portion 18 for exhausting air burned in the combustion chamber.

  An air cleaner 15 is disposed above the engine E, and an intake pipe 16 is connected to the air cleaner 15 from the intake port 17 of the engine E. Further, the intake connecting pipe 14 is extended upward from the air cleaner 15, and an intake resonator 13 as a silencer is connected to the upper end portion of the intake connecting pipe 14.

  The intake resonator 13 is disposed between the operating unit 8 and the Glen tank 10. The intake resonator 13 is formed in a box shape that is narrow in the front-rear direction and wide in the left-right direction. The intake resonator 13 functions as a silencer to mute intake sound from a precleaner 12 described later.

  Further, on the engine room R, a guard body arrangement space Q is formed between the operation unit 8 and the grain storage unit 9 (Glen tank 10). That is, the grain storage part 9 (Glenn tank 10) is arrange | positioned spaced apart from the driving | operation part 8 with a predetermined space | interval, and the space which has the predetermined space | interval is made into the guard body arrangement | positioning space Q. And in the guard body arrangement | positioning space Q, the shielding body 40 which shields between the middle part of the tail pipe 30 (exhaust flow path) mentioned later and the operation part 8 is provided.

  That is, as shown in FIG. 3 to FIG. 5, the shield 40 has a width that is wider than the left and right widths of the intake resonator 13, and rises up from the front portion of the upper surface of the intake resonator 13. A wall 40a, an inclined wall 40b extending obliquely from the upper edge of the rising wall 40a to the rear upper side, and an upper right side portion of the intake resonator 13 (outside air introduction pipe) connected to both walls 40a and 40b. 29, and a side wall 40c erected in a straight shape from the left side adjoining position), and is attached to the intake resonator 13 so as to protrude to the left side. Here, the tip edge portion (upper edge portion) of the inclined wall 40 b is located on the lower side of the pre-cleaner 12 and is disposed close to the upper front portion of the grain storage unit 9. Reference numeral 36 denotes a stay protruding from the left side wall of the intake resonator 13, and the stay 36 supports the left-side protruding portion of the shield 40. Reference numeral 37 denotes a reinforcing rib provided in the middle of the inner surface of the shield 40.

  Thus, since the shield 40 is supported and fastened to the intake resonator 13, it can be easily and reliably disposed in the guard body disposition space Q.

  The shielding body 40 is disposed in the guard body placement space Q, and the shielding body 40 shields the vertical direction of the guard body placement space Q above the intake resonator 13. Therefore, it is possible to prevent noise generated from the engine E provided in the prime mover unit 7 from being released to the rear upper side of the operating unit 8 through the guard body installation space Q, and to achieve a soundproofing effect. . At the same time, the shield 40 performs a heat shielding function for preventing heat released from the engine E from being released to the rear upper part of the operating unit 8 through the guard body arrangement space Q, and thus a heat shielding effect can be achieved. it can.

Moreover, a silencing space B is formed between the inner surface side (lower surface side) of the shield 40 and the intake resonator 13. In particular, the shielding body 40 is provided with an inclined wall 40b so that a large silencing space B can be secured. Further, a relatively narrow narrow space C is formed between the intake resonator 13 and the Glen tank 10 in the guard body arrangement space Q. The engine sound generated from the engine E passes through the narrow space C and propagates to the muffling space B which is a wide space.
Thus, by propagating from the narrow space C to the wide silencing space B, the frequency of the engine sound wave is effectively attenuated and silenced in the silencing space B which is an expanded wide space. The

  Furthermore, the engine sound, which is an unpleasant sound for an operator who sits on the driving unit 8 and is annoying, is shielded and reflected / diffused by the shield 40, and the volume is reduced to reduce the degree of harshness. Therefore, the worker's habitability can be improved and the work efficiency can be improved.

  Further, a sound absorbing material is stretched on the inner surface of the shield 40 (Y side shown in FIG. 3). Therefore, the engine sound propagated to the sound deadening space B can be absorbed by the sound absorbing material, and the sound deadening effect can be enhanced. Examples of the sound absorbing material include porous materials such as flexible urethane foam and glass wool. Moreover, by making the inner surface of the shield 40 into a semi-cylindrical shape, the area of the sound-absorbing material stretched on the inner surface can be expanded, and the silencing effect can be improved.

  The engine sound generated from the engine E reaches the muffling space B through the narrow space C in the guard body installation space Q. Then, the engine sound that reaches the silencing space B is absorbed by the sound absorbing material stretched on the lower surface of the shield 40. Thereby, the volume of the engine E can be significantly reduced. Therefore, the comfortability of the operator can be further improved, and the work efficiency can be improved.

  In such a configuration, the combine A in the present embodiment has the pre-cleaner 12 disposed in the glen tank 10, the threshing unit 4, and the space. That is, a narrow space P is formed in the left-right direction between the grain tank 10 and the threshing unit 4. In the space P, the outside air introduction pipe 29 is extended rearward at a predetermined distance from the left side of the intake resonator 13. A pre-cleaner 12 is provided in communication with the tip of the outside air introduction pipe 29.

  The precleaner 12 purifies the external air as a pretreatment before introducing the outside air into the air cleaner 15. In this way, outside air is taken from the pre-cleaner 12, dust and dirt in the outside air are removed by the pre-cleaner 12, and then sent to the air cleaner 15 while being silenced by the intake resonator 13. Then, the outside air is taken into the combustion chamber in the engine E as purified air by removing finer dust and the like in the air cleaner 15 and used for combustion.

  Further, the precleaner 12 serves as a sound source of noise when the outside air is taken in. The precleaner 12 serving as the sound source is arranged behind the operator of the operation unit 8 with a predetermined distance. Thereby, the intake sound of the precleaner 12 which becomes an annoying intake sound source can be separated from the worker sitting on the driving unit 8, and the noise level can be reduced or eliminated. As a result, the work environment of the worker can be improved.

  Further, when the precleaner 12 is positioned above the upper surface of the grain tank 10, when the grain carrying out auger 33 is swung, the precleaner 12 collides with the grain carrying out auger 33, and the grain carrying out auger 33. Will not be able to swivel.

  Therefore, the combine A in the present embodiment is configured such that the precleaner 12 is located at the same level as or below the upper surface of the Glen tank 10 as shown in FIG. Moreover, it was made to be located above the upper surface of the threshing part 4.

  As described above, the precleaner 12 is positioned at the same level as or below the upper surface of the grain tank 10, so that when the grain carrying out auger 33 connected to the grain tank 10 is swung, There will be no hindrance. Moreover, since the pre-cleaner 12 is positioned above the top surface of the threshing portion 4, the outer rim portion (left side edge portion) is provided on the threshing portion 4 with the inner edge portion (right edge portion) as a fulcrum. Even when the ceiling opening / closing body 43 that can be opened and closed in the vertical direction is provided, it is possible to prevent the ceiling opening / closing body 43 from being hindered. Reference numeral 44 denotes an interference prevention guard that regulates the descent of the grain carrying out auger 33 and prevents interference with the precleaner 12.

  Further, the pre-cleaner 12 is disposed between the threshing unit 4 and the Glen tank 10, and the intake resonator 13 is disposed between the operation unit 8 and the Glen tank 10. Therefore, the outside air introduction pipe 29 interposed between the intake resonator 13 disposed between the operation unit 8 and the Glen tank 10 and the precleaner 12 disposed between the Glen tank 10 and the threshing unit 4. Therefore, the silencing effect can be improved also by the intake flow path length.

  On the other hand, as shown in FIG. 3, the exhaust outlet pipe 34 extends upward from the exhaust port portion 18 of the engine E and communicates with an exhaust silencer 19 disposed above the engine E. A tail pipe 30 that is an exhaust pipe is extended rearward and upward from the exhaust silencer 19.

  As shown in FIGS. 3 to 5, the tail pipe 30 rises upward from the exhaust silencer 19 to the left side position of the intake resonator 13 as viewed from the side. Is extended rearward at a position higher than the threshing portion 4 and lower than the grain tank 10.

  And the termination | terminus opening part (exhaust port) 39 of the tail pipe 30 is arrange | positioned above the front part upper part of the threshing part 4, and it is opened toward back upper direction. Reference numeral 38 denotes a fixture such as a bracket that fixes a required portion of the tail pipe 30 to the threshing portion 4. In this way, the exhaust from the engine E is discharged from the end opening 39 of the tail pipe 30 rearward and upward through the exhaust silencer 19.

  In such a configuration, the shield 40 has a left end 41 (inner end) extending leftward (inward). That is, as shown in FIGS. 4 and 5, the shield 40 has a left end 41 that protrudes leftward from the left side wall 42 of the intake resonator 13, and the left end 41 is connected to the engine E side. Near the middle of the tail pipe 30.

  Thereby, the shield 40 partially shields the middle part of the tail pipe 30 close to the engine E side, and shields a part of the tail pipe 30 close to the operating part 8 from directly above. Furthermore, the tail pipe 30 extends between the threshing portion 4 and the Glen tank 10 from the middle portion thereof at a higher position than the threshing portion 4 and at a lower position than the Glen tank 10. For this reason, the end opening (exhaust port) of the tail pipe 30 is arranged in a direction away from the worker seated on the operating unit 8, thereby reducing the adverse effects of exhaust noise and exhaust heat on the worker. be able to.

  In this way, the inner end portion of the shielding body 40 extending inwardly shields the portion directly above the portion of the tail pipe 30 adjacent to the operating portion 8, so that the portion of the tail pipe 30 that is in a high temperature state is shielded. An operator's hand etc. can be prevented from touching accidentally. Therefore, the shield 40 can also function as a safety cover.

  And the sound-absorbing material is affixed on the back surface (Y side shown in FIG. 3) of the shielding body 40 which the pre cleaner 12 faces. The sound absorbing material absorbs engine sound generated from the engine as described above, and absorbs intake sound generated by the precleaner 12. In this way, the sound absorption material on the back surface of the shield 40 (Y side shown in FIG. 3) can mute the intake sound of the precleaner 12 that enters the operator's ear of the operation unit 8.

It is a side view which shows the whole structure of the combine in embodiment of this invention. It is a top view which shows the whole structure of the combine in embodiment of this invention. It is a side view which shows the intake mechanism and exhaust mechanism of a combine in embodiment of this invention. It is a top view which shows the intake mechanism and exhaust mechanism of a combine in embodiment of this invention. It is a rear view which shows the intake mechanism and exhaust mechanism of a combine in embodiment of this invention.

Explanation of symbols

A Combine,
4 Threshing department,
7 Motor Department,
8 Driving Department,
9 Kernel storage part,
10 Glentank,
12 Precleaner,
13 Intake resonator 40 Shield.

Claims (3)

In the combine in which the driving unit is disposed above the prime mover unit, the grain storage unit is disposed behind the driving unit, and the threshing unit is disposed on the side of the grain storage unit,
The combine characterized by arrange | positioning the inhalation | air-intake start end part of the inhalation flow path extended from a motor part between the grain storage part and the threshing part.   The intake start end portion of the intake flow path is arranged to be equal to or below the upper surface of the grain storage portion and positioned above the upper surface of the threshing portion. Combine.   The combiner according to claim 1 or 2, wherein a silencer is provided in a midway portion of the intake flow path, and the silencer is disposed between the operation part and the grain storage part.

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