harvester

Abstract

To provide a desired harvester capable of effectively ventilating an engine room.SOLUTION: A harvester includes: a water-cooling engine E; a radiator 15 that cools cooling water for the engine E; a first fan 16 that is provided between the engine E and the radiator 15 and feeds cooling air to the radiator 15; an engine room 18 accommodating the engine E, the radiator 15, and the first fan 16; and a second fan 27 that ventilates the engine room 18.SELECTED DRAWING: Figure 5

Description

[Technical Field]

[0001] The present invention relates to a harvester. [Background technology]

[0002] A conventionally known harvester is, for example, the harvester described in Patent Document 1. The harvester described in Patent Document 1 includes a water-cooled engine, a radiator that cools the engine cooling water, a first fan that is provided between the engine and the radiator and supplies cooling air to the radiator, and an engine room that houses the engine, the radiator, and the first fan. [Prior art documents] [Patent documents]

[0003] [Patent Document 1] Japanese Patent Publication No. 2022-97218 Summary of the Invention [Problem to be solved by the invention]

[0004] In the harvester described in Patent Document 1, it is desirable to effectively ventilate the engine compartment.

[0005] In view of the above circumstances, there is a demand for a harvester that can effectively ventilate the engine compartment. [Means for solving the problem]

[0006] The present invention is characterized by comprising a water-cooled engine, a radiator for cooling engine coolant, a first fan provided between the engine and the radiator for supplying cooling air to the radiator, an engine compartment accommodating the engine, the radiator, and the first fan, and a ventilation system for ventilating the engine compartment. One A second fan is provided. The second fan is positioned forward in the longitudinal direction of the aircraft relative to the engine. The reason is that...

[0007] According to this characteristic configuration, the first fan supplies cooling air to the radiator, and the second fan ventilates the air cleaner compartment, thereby enabling the engine compartment to be ventilated effectively. Furthermore, with this characteristic configuration, the air flowing through the engine compartment toward the second fan is not obstructed by the engine.

[0008] Furthermore, in the present invention, it is preferable that the aircraft is provided with an aircraft body, and the first fan is arranged on one side of the aircraft body in the left-right direction relative to the engine, and the second fan is arranged on the other side of the aircraft body in the left-right direction relative to the engine.

[0009] According to this characteristic configuration, cooling air is supplied to the radiator by the first fan on one side of the engine in the transverse direction of the aircraft, and the engine compartment is ventilated by the second fan on the other side of the engine in the transverse direction of the aircraft. Therefore, the cooling air from the first fan flows through the engine compartment to the other side in the transverse direction of the aircraft, and the air in the engine compartment is exhausted to the outside of the engine compartment from the other side in the transverse direction of the aircraft by the second fan. This allows the engine compartment to be ventilated more effectively.

[0010] Furthermore, in the present invention, it is preferable that the engine room is formed at one side of the fuselage, either to the left or right, and that the first fan is arranged laterally outward from the engine, and that the second fan is arranged laterally inward from the engine.

[0011] According to this characteristic configuration, cooling air is supplied to the radiator by the first fan on the outer side of the machine body relative to the engine, and the engine compartment is ventilated by the second fan on the inner side of the machine body relative to the engine. Therefore, the cooling air from the first fan flows through the engine compartment toward the inner side of the machine body, and the air in the engine compartment is exhausted to the outside of the engine compartment by the second fan from the inner side of the engine compartment on the inner side of the machine body. This allows for more effective ventilation of the engine compartment. Furthermore, it is possible to prevent the air exhausted to the outside of the engine compartment from affecting the surroundings of the harvester.

[0012] Furthermore, in the present invention, it is preferable that the second fan overlaps with the engine compartment in a side view.

[0013] According to this characteristic configuration, when the second fan rotates, the air in the engine compartment flows toward the second fan, thereby enabling the air in the engine compartment to be smoothly discharged to the outside of the engine compartment.

[0014]

[0015]

[0016] Furthermore, in the present invention, the engine has an output section that outputs power from the other side of the engine in the left-right direction of the machine body, and is provided with a threshing device that is provided at the other side of the machine body in the left-right direction of the machine body and threshes the harvested straw, a transmission shaft that extends along the left-right direction of the machine body and transmits power from the engine to the threshing device, and a belt transmission mechanism that is provided between the output section and the transmission shaft and transmits power from the engine to the transmission shaft, and the belt transmission mechanism has a first pulley provided at the output section, a second pulley provided on the transmission shaft, and a belt wound around the first pulley and the second pulley, and it is preferable that the second fan is constituted by the second pulley.

[0017] According to this characteristic configuration, the second pulley can be used as the second fan.

[0018] Furthermore, in the present invention, it is preferable that the engine room is formed at one side of the front of the threshing device in the left-right direction of the machine body, and that the transmission shaft is provided below and in front of the threshing device.

[0019] According to this characteristic configuration, the second pulley can be disposed near the engine compartment.

[0020] Furthermore, in the present invention, it is preferable that the outer diameter of the second pulley is larger than the outer diameter of the first pulley.

[0021] According to this characteristic configuration, the second pulley is configured to have a large diameter, which can improve the function of the second pulley as a fan.

[0022] Furthermore, in the present invention, the second pulley has a boss portion supported by the transmission shaft, an outer ring portion around which the belt is wound, and a connecting portion that spans the boss portion and the outer ring portion and connects the boss portion and the outer ring portion, and it is preferable that the connecting portion has one or more openings that open in the left-right direction of the aircraft body.

[0023] According to this characteristic configuration, the air inside the engine compartment can be discharged to the outside of the engine compartment through the opening.

[0024] Furthermore, in the present invention, it is preferable that the second pulley is provided in a portion of the connecting portion that is on the engine room side in the left-right direction of the aircraft body, and has one or more raised portions that rise toward the engine room side in the left-right direction of the aircraft body.

[0025] According to this characteristic configuration, the rising portion functions as a fan blade, thereby improving the function of the second pulley as a fan. [Brief explanation of the drawings]

[0026] [Figure 1] FIG. 2 is a right side view showing the combine harvester. [Figure 2] FIG. [Figure 3] FIG. 2 is a left side view showing the driving unit, the power unit, and their peripheral structures. [Figure 4] FIG. 2 is a front cross-sectional view showing the driving section, the motor section, and their surrounding structure. [Figure 5] FIG. 2 is a plan cross-sectional view showing a motor unit and its surrounding structure. [Figure 6] FIG. [Figure 7] This is a right side view showing the storage section. [Figure 8] 8 is a cross-sectional view taken along the line VIII-VIII in FIG. 7. DETAILED DESCRIPTION OF THE INVENTION

[0027] An embodiment of the present invention will be described with reference to the drawings. In the following, the direction of arrow F is defined as "forward of the aircraft body," the direction of arrow B is defined as "rearward of the aircraft body," the direction of arrow L is defined as "leftward of the aircraft body," the direction of arrow R is defined as "rightward of the aircraft body," the direction of arrow U is defined as "upward of the aircraft body," and the direction of arrow D is defined as "downward of the aircraft body."

[0028] [Overall configuration of the combine] 1 and 2 show a combine harvester (corresponding to the "harvester" according to the present invention). As shown in FIGS. 1 and 2, the combine harvester is a whole-culm input type combine harvester. The combine harvester is equipped with a machine body 1, a reaping unit 2, a feeder 3, a threshing device 4, a grain tank 5, a grain discharge device 6, a driving unit 7, a motor unit 8, and a transmission T.

[0029] The machine body 1 includes left and right crawler traveling devices 9 and a machine body frame 10. The machine body frame 10 is supported by the left and right crawler traveling devices 9. In this embodiment, one side of the machine body in the left-right direction is the "right side," the other side of the machine body in the left-right direction is the "left side," one side of the machine body in the fore-and-aft direction is the "front side," and the other side of the machine body in the fore-and-aft direction is the "rear side."

[0030] The reaping unit 2 is disposed in front of the machine body 1 and reaps the planted culms.

[0031] The feeder 3 transports the harvested stalks toward the threshing device 4. The feeder 3 is provided across the reaping unit 2 and the threshing device 4.

[0032] The threshing device 4 threshes the harvested stalks. The threshing device 4 is provided on the other side of the machine body 1 in the left-right direction of the machine body (on the left side in this embodiment).

[0033] The grain tank 5 stores grains. The grain tank 5 is disposed to the right of the threshing device 4. The grain discharge device 6 discharges the grains in the grain tank 5.

[0034] A driver sits in the driver's section 7. The driver's section 7 is provided on one side of the vehicle body 1 in the left-right direction (the right side in this embodiment). The driver's section 7 includes a driver's seat 11, a front panel 12, and a side panel 13. The driver sits in the driver's seat 11. The front panel 12 is located in front of the driver's seat 11. The side panel 13 is located to the left of the driver's seat 11.

[0035] The driving unit 8 includes an engine E, a muffler 14, a radiator 15, a first fan 16, an engine bonnet 17, an engine compartment 18, and a dust cover 19.

[0036] The transmission T changes the speed of power from the engine E and transmits it to the left and right crawler traveling devices 9. The transmission T is provided at the rear of the machine body 1.

[0037] [Motor unit] 3 to 5, the engine bonnet 17 forms an engine compartment 18. The driver's seat 11 is supported on an upper surface 17a of the engine bonnet 17.

[0038] The engine room 18 houses the engine E, the muffler 14, the radiator 15, and the first fan 16. The engine room 18 is formed below the driving section 7. That is, the engine room 18 is formed on one side of the machine body 1 in the left-right direction (the right side in this embodiment). In other words, the engine room 18 is formed on one side of the machine body 1 in the left-right direction (the right side in this embodiment) relative to the front of the threshing device 4.

[0039] The dust cover 19 allows ventilation and prevents dust from passing through. The dust cover 19 covers the engine compartment 18 from the outside in the left-right direction of the vehicle body (the right side in this embodiment).

[0040] The engine E is a water-cooled engine. The engine E is equipped with a flywheel 20 (corresponding to the "output section" according to the present invention). The flywheel 20 is provided on the left side of the engine E. The flywheel 20 is connected to an output shaft (crankshaft) not shown. The engine E outputs power from the output shaft through the flywheel 20. That is, the engine E is equipped with the flywheel 20 that outputs power from the other side of the engine E in the left-right direction of the aircraft (the left side in this embodiment). The power from the engine E is transmitted to the transmission T (see FIG. 1) by a belt transmission mechanism 21 or the like.

[0041] The muffler 14 is a muffler for the engine E. The muffler 14 is disposed on the upper left side of the engine E. An exhaust pipe 22 that discharges exhaust gas from the engine E is connected to the muffler 14.

[0042] The radiator 15 cools the coolant for the engine E. The radiator 15 is disposed to the right of the engine E.

[0043] The first fan 16 supplies cooling air to the radiator 15. The first fan 16 is configured to be switchable between a forward rotation state in which outside air flows into the engine compartment 18 through the dustproof cover 19 and a reverse rotation state in which air in the engine compartment 18 flows out to the outside of the engine compartment 18 through the dustproof cover 19.

[0044] The first fan 16 is provided between the engine E and the radiator 15. The first fan 16 is disposed on the right side of the engine E. In other words, the first fan 16 is disposed laterally outboard of the aircraft with respect to the engine E. That is, the first fan 16 is disposed on one side (the right side in this embodiment) of the engine E in the left-right direction of the aircraft. A shroud 23 is provided around the first fan 16.

[0045] [Power transmission structure] As shown in Figures 3 to 5, a transmission shaft 24 extending in the left-right direction of the machine body is provided below and in front of the threshing device 4. The transmission shaft 24 transmits power from the engine E to the reaping section 2, the feeder 3, and the threshing device 4. A belt transmission mechanism 25 that transmits power from the engine E to the transmission shaft 24 is provided between the flywheel 20 and the transmission shaft 24. The belt transmission mechanism 25 is arranged closer to the engine E (to the right in this embodiment) than the belt transmission mechanism 21 in the left-right direction of the machine body. The belt transmission mechanism 25 includes a first pulley 26, a second pulley 27 (corresponding to the "second fan" and "second pulley" according to the present invention), and a belt 28.

[0046] The first pulley 26 is provided on the flywheel 20. The first pulley 26 is fixed to the left side surface of the flywheel 20 so as to rotate integrally with the flywheel 20.

[0047] The second pulley 27 is provided on the transmission shaft 24. The second pulley 27 is fixed to the right end of the transmission shaft 24 so as to rotate integrally with the transmission shaft 24. The outer diameter of the second pulley 27 is larger than the outer diameter of the first pulley 26.

[0048] The belt 28 is wound around the first pulley 26 and the second pulley 27. The belt 28 is a V-belt.

[0049] The second pulley 27 is covered by a cover 29. The cover 29 covers the second pulley 27 from the radial outside. Specifically, the cover 29 covers the second pulley 27 from the front, above, and below.

[0050] A clutch mechanism 30 that connects and disconnects the power from the engine E to the transmission shaft 24 is provided in the power transmission path from the engine E to the transmission shaft 24. The clutch mechanism 30 is a belt tension clutch. The clutch mechanism 30 includes a belt transmission mechanism 25, a tension arm 31, a tension roller 32, and a return spring 33.

[0051] The tension arm 31 is configured to be swingable around the transmission shaft 24. The tension arm 31 has a front arm portion 31a located in front of the transmission shaft 24, and a rear arm portion 31b located in rear of the transmission shaft 24. A link mechanism 47 for swinging the tension arm 31 is connected to the front arm portion 31a. The tension roller 32 is rotatably supported by the rear arm portion 31b.

[0052] The return spring 33 biases the tension arm 31 to swing in the direction in which the tension roller 32 moves away from the belt 28. The return spring 33 is provided across the cover 29 and the rear arm portion 31b.

[0053] When the tension roller 32 is pressed against the belt 28, power from the engine E is transmitted to the transmission shaft 24 by the belt transmission mechanism 25. When the tension roller 32 moves away from the belt 28, the transmission of power from the engine E to the transmission shaft 24 by the belt transmission mechanism 25 is interrupted.

[0054] [Second pulley] As shown in Figures 3 to 5, the second pulley 27 ventilates the engine compartment 18. That is, the "second fan" according to the present invention is constituted by the second pulley 27. The second pulley 27 is arranged on the left side of the engine E. In other words, the second pulley 27 is arranged on the inner side of the machine body relative to the engine E. That is, the second pulley 27 is arranged on the other side of the machine body in the left-right direction (the left side in this embodiment) relative to the engine E. The second pulley 27 is arranged in the range between the engine E and the threshing device 4 in the left-right direction of the machine body.

[0055] The second pulley 27 is offset forward relative to the engine E. That is, the second pulley 27 is offset to one side (the front in this embodiment) in the fore-and-aft direction of the machine body relative to the engine E. The second pulley 27 overlaps with the engine room 18 in a side view, but does not overlap with the engine E or the threshing device 4.

[0056] 4 to 6, the second pulley 27 is a V-pulley. The second pulley 27 includes a boss portion 34 supported by the transmission shaft 24, an outer ring portion 35 around which the belt 28 is wound, a connecting portion 36 connecting the boss portion 34 and the outer ring portion 35, and a plurality of (three in this embodiment) raised portions 37. The outer ring portion 35 includes a plurality of (three in this embodiment) groove portions 35a into which the belt 28 fits.

[0057] The connecting portion 36 is provided across the boss portion 34 and the outer ring portion 35. The connecting portion 36 includes a plurality of (three in this embodiment) spoke portions 36a and a plurality of (three in this embodiment) openings 36b.

[0058] The spoke portions 36a extend radially from the boss portion 34 toward the outer ring portion 35. The openings 36b open in the left-right direction of the vehicle body. The openings 36b are formed in the connecting portion 36 between a pair of adjacent spoke portions 36a. In other words, the connecting portion 36 is formed with a plurality of openings 36b (three in this embodiment) that open in the left-right direction of the vehicle body.

[0059] The rising portion 37 is provided on a portion of the connecting portion 36 that is closer to the engine compartment 18 in the left-right direction of the aircraft (on the right side in this embodiment). Specifically, the rising portion 37 is formed on a portion of the spoke portion 36a that is closer to the engine compartment 18 in the left-right direction of the aircraft (on the right side in this embodiment). The rising portion 37 rises toward the engine compartment 18 in the left-right direction of the aircraft (on the right side in this embodiment). The rising portion 37 functions as a fan blade. The height (length in the left-right direction of the aircraft) of the rising portion 37 increases from the boss portion 34 side toward the outer ring portion 35 side. The rising portion 37 is connected to the boss portion 34, the outer ring portion 35, and the spoke portion 36a. In other words, the boss portion 34, the outer ring portion 35, the spoke portion 36a, and the rising portion 37 are integrally formed.

[0060] As shown in FIG. 5, when the first fan 16 rotates in the normal direction, outside air flows into the engine compartment 18 via the dust cover 19 (see air flow A1 in FIG. 5). When the second pulley 27 rotates, air in the engine compartment 18 flows toward the second pulley 27 (see air flow A2 in FIG. 5). Ultimately, the air in the engine compartment 18 flows out of the engine compartment 18 through the opening 36b (see air flow A3 in FIG. 5). In other words, the second pulley 27 is a fan (exhaust fan) that exhausts air from the engine compartment 18 to the outside of the engine compartment 18. In FIG. 2, the air flow is indicated by an outline arrow (bold dotted line).

[0061] A passage 38 is formed in the engine compartment 18, through which air in the engine compartment 18 flows toward the second pulley 27. The passage 38 is formed around the engine E, particularly between the front portion of the engine E and the front surface 17b of the engine bonnet 17.

[0062] [Storage section] As shown in Figures 7 and 8, a lower narrowed portion 5a is formed at the bottom of the grain tank 5. A storage section 39 is provided on the right side of the lower narrowed portion 5a. The storage section 39 is used as a storage space for small items (for example, a tool storage space). The storage section 39 is formed integrally with the lower narrowed portion 5a.

[0063] The storage section 39 includes a main body section 40 and a lid section 41. An opening 40a is formed in the main body section 40. The lid section 41 covers the opening 40a. The lower edge of the lid section 41 is supported by the main body section 40 via front and rear hinges 42 so that the lid section can swing open and closed.

[0064] The lid portion 41 is configured to be able to be fixed in a position where it closes the opening 40a (closed position) by a locking mechanism 43. The locking mechanism 43 includes a pin 44 and a stopper 45. The pin 44 is provided in a portion of the main body 40 above the opening 40a. A notch 41a is formed in the upper edge of the lid 41, into which the pin 44 fits. A stopper 45 is provided in the upper edge of the lid 41. The stopper 45 is a leaf spring. The front of the stopper 45 is fixed to the upper edge of the lid 41 by front and rear bolts 46. The rear end of the stopper 45 is formed with a hole 45a into which the pin 44 is inserted.

[0065] When lid 41 is closed, pin 44 fits into notch 41a. When pin 44 is inserted into hole 45a, stopper 45 catches on pin 44, preventing lid 41 from opening. In other words, lid 41 is fixed in the closed position by locking mechanism 43.

[0066] Then, stopper 45 is bent around bolt 46 as a fulcrum so that pin 44 comes out of hole 45a, thereby releasing lid 41 from being fixed in the closed position by locking mechanism 43. This causes lid 41 to swing downward around front and rear hinges 42 as fulcrums, allowing lid 41 to be opened.

[0067] [Other Embodiments] (1) In the above embodiment, the second pulley 27 is disposed on the left side of the engine E. However, the second pulley 27 may be disposed on the right side of the engine E.

[0068] (2) In the above embodiment, the second pulley 27 is disposed laterally inside the aircraft body relative to the engine E. However, the second pulley 27 may be disposed laterally outside the aircraft body relative to the engine E.

[0069] (3) In the above embodiment, the second pulley 27 overlaps with the engine compartment 18 in a side view. However, the second pulley 27 does not have to overlap with the engine compartment 18 in a side view.

[0070] (4) In the above embodiment, the second pulley 27 is offset forward with respect to the engine E. That is, the second pulley 27 is offset to one side in the longitudinal direction of the aircraft with respect to the engine E. However, the second pulley 27 may be offset rearward with respect to the engine E. That is, the second pulley 27 may be offset to the other side in the fore-and-aft direction of the aircraft relative to the engine E. Alternatively, the second pulley 27 may not be offset in the fore-and-aft direction of the aircraft relative to the engine E. That is, the second pulley 27 may overlap with the engine E in a side view.

[0071] (5) In the above embodiment, the "second fan" according to the present invention is configured by the second pulley 27. However, the "second fan" according to the present invention does not have to be configured by the second pulley 27. That is, the "second fan" according to the present invention may be configured separately from the second pulley 27. For example, the "second fan" according to the present invention, separate from the second pulley 27, may be provided on the transmission shaft 24. Furthermore, when the "second fan" according to the present invention is configured separately from the second pulley 27, the "second fan" according to the present invention may be configured to be rotationally driven by a dedicated actuator (for example, a hydraulic motor, an electric motor, etc.).

[0072] (6) In the above embodiment, the transmission shaft 24 is provided in front of and below the threshing device 4. However, the transmission shaft 24 may be provided in a location other than in front of and below the threshing device 4.

[0073] (7) In the above embodiment, the outer diameter of the second pulley 27 is larger than the outer diameter of the first pulley 26. However, the outer diameter of the second pulley 27 may be smaller than the outer diameter of the first pulley 26. Alternatively, the outer diameter of the second pulley 27 may be the same as the outer diameter of the first pulley 26.

[0074] (8) In the above embodiment, three openings 36b are formed in the connecting portion 36. However, one, two, or four or more openings 36b may be formed in the connecting portion 36.

[0075] (9) In the above embodiment, the second pulley 27 has three raised portions 37. However, the second pulley 27 may have one, two, or four or more raised portions 37.

[0076] (10) In the above embodiment, the second pulley 27 is a fan (exhaust fan) that exhausts air from within the engine compartment 18 to the outside of the engine compartment 18. However, the second pulley 27 may be a fan (blower fan) that blows outside air into the engine compartment 18 as long as the second pulley 27 can ventilate the engine compartment 18. [Industrial Applicability]

[0077] The present invention can be used not only for whole-culm-injection combine harvesters, but also for head-feeding combine harvesters, corn harvesters, and vegetable harvesters. [Explanation of symbols]

[0078] 1 aircraft 4. Threshing equipment 15 Radiator 16 First Fan 18 Engine Room 20 Flywheel (output section) 24 Transmission shaft 25 Belt transmission mechanism 26 First pulley 27 Second pulley (second fan, second pulley) 28 Belt 34 Boss section 35 Outer ring 36 Connecting part 36b aperture 37 Rising section E-Engine

Claims

1. A water-cooled engine and a radiator that cools the engine cooling water; a first fan provided between the engine and the radiator and configured to supply cooling air to the radiator; an engine compartment that accommodates the engine, the radiator, and the first fan; a second fan for ventilating the engine compartment; The second fan is positioned forward in the fore-and-aft direction of the harvester body relative to the engine.

2. Equipped with aircraft, the first fan is disposed on one side of the engine in the left-right direction of the aircraft, The harvester according to claim 1 , wherein the second fan is disposed on the other side of the engine in the left-right direction of the machine body.

3. The engine room is formed at one of the left and right sides of the aircraft body, the first fan is disposed laterally outboard of the airframe relative to the engine; The harvester according to claim 2 , wherein the second fan is disposed laterally inward of the engine.

4. The harvester according to any one of claims 1 to 3, wherein the second fan overlaps with the engine compartment in a side view.

5. the engine has an output section that outputs power from a side section of the engine on the other side in the left-right direction of the aircraft, A threshing device provided on the other side of the machine body in the left-right direction of the machine body and threshing the harvested stalks; A transmission shaft extending along the left-right direction of the machine body and transmitting power from the engine to the threshing device; a belt transmission mechanism provided between the output portion and the transmission shaft to transmit power from the engine to the transmission shaft, the belt transmission mechanism includes a first pulley provided on the output portion, a second pulley provided on the transmission shaft, and a belt wound around the first pulley and the second pulley, The harvester according to claim 3, wherein the second fan is formed by the second pulley.

6. The engine room is formed on one side of the front of the threshing device in the left-right direction of the machine body, The harvester according to claim 5, wherein the transmission shaft is provided in front of and below the threshing device.

7. The harvester according to claim 5 or 6, wherein the outer diameter of the second pulley is larger than the outer diameter of the first pulley.

8. the second pulley has a boss portion supported by the transmission shaft, an outer ring portion around which the belt is wound, and a connecting portion provided across the boss portion and the outer ring portion and connecting the boss portion and the outer ring portion, The harvester according to claim 5 or 6, wherein the connecting portion is formed with one or more openings that open in the left-right direction of the machine body.

9. A harvester as described in claim 8, wherein the second pulley is provided in the part of the connecting portion that is on the engine room side in the left-right direction of the body, and has one or more raised portions that rise toward the engine room side in the left-right direction of the body.

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