Harvesting machine

Abstract

To provide a harvesting machine that allows for easy maintenance of both the cooling system and the condenser. [Solution] The vehicle is equipped with an engine, an operating unit 6, a cabin 10 covering the operating unit 6, an air conditioning system for ventilating the inside of the cabin 10, a condenser for the air conditioning system, and an external unit 30 positioned outside the cabin, which has a cooling fan for blowing cooling air onto the condenser, an engine cooling system 20 for cooling the engine, and a dustproof case 16 that covers the engine cooling system 20 and removes dust contained in the cooling air introduced from the outside. The external unit 30 is positioned above the dustproof case 16.

Description

Technical Field

[0001] The present invention relates to a harvesting machine.

Background Art

[0002] Conventionally, as a harvesting machine, for example, a harvesting machine described in Patent Document 1 is known. The harvesting machine described in Patent Document 1 includes an engine (reference numeral

[16] in the document) and an engine cooling device (referred to as "radiator

[17] " in the document) for cooling the engine. The engine cooling device is covered by a dust-proof case (reference numeral

[22] in the document). Further, the operation unit (reference numeral [7] in the document) is covered by a cabin (reference numeral [8] in the document). A capacitor (reference numeral

[40] in the document) for an air conditioner that air-conditions the inside of the cabin is disposed between the engine cooling device and the dust-proof case.

Prior Art Documents

Patent Documents

[0003]

Patent Document 1

Summary of the Invention

Problems to be Solved by the Invention

[0004] In the harvesting machine described in Patent Document 1, the engine cooling device and the capacitor are disposed at overlapping positions in a side view, and the engine cooling device and the capacitor are collectively disposed inside the machine body laterally rather than the dust-proof case. In such a configuration, when an operator performs maintenance on the engine cooling device, the capacitor must be removed. Therefore, there is room for improvement in terms of easily performing maintenance on each of the cooling device and the capacitor.

[0005] In view of the above situation, there is a demand for a harvesting machine capable of easily performing maintenance on each of the cooling device and the capacitor.

Means for Solving the Problems

[0006] The harvesting machine of the present invention is characterized in that it comprises an engine, an operating section, a cabin covering the operating section, an air conditioning system for conditioned the interior of the cabin, a condenser for the air conditioning system, and a cooling fan for generating cooling air for the condenser, and is positioned outside the cabin, an engine cooling system for cooling the engine, and a dustproof case covering the engine cooling system and removing dust contained in the cooling air introduced from the outside, and the external unit is positioned above the dustproof case.

[0007] According to the present invention, an external unit having a condenser is positioned above a dustproof case covering the engine cooling system. This makes it possible to position the external unit above the engine cooling system. As a result, a harvesting machine is realized in which maintenance of both the cooling system and the condenser can be easily performed.

[0008] In the present invention, a driver's seat is provided in the driver's compartment, and it is preferable that the vertical range of the external unit and the vertical range of the driver's seat overlap.

[0009] With this configuration, the external unit is positioned at approximately the same height as the driver's seat. This ensures that, despite being located above the engine cooling system, the external unit is easily accessible to the operator.

[0010] In the present invention, an air cleaner is provided to remove dust contained in the internal combustion air drawn into the engine, and it is preferable that the external unit is configured to swing between a normal position in which it overlaps with the air cleaner in a side view of the aircraft and closes the air cleaner, and a maintenance position in which it exposes the air cleaner.

[0011] In this configuration, the external unit also serves as a cover that allows the air cleaner to be opened and closed.

[0012] In the present invention, it is preferable that a locking mechanism is provided that can switch between a fixed state in which the external unit is fixed in the normal position and an unfixed state in which the external unit is not fixed in the normal position.

[0013] In this configuration, when the locking mechanism is switched to the unlocked state, the external unit can swing from the normal position to the maintenance position. In other words, the external unit is held in place by the locking mechanism so that it is in the normal position.

[0014] In the present invention, the bottom surface of the external unit is provided with a downwardly projecting projection, the external unit is configured to swing around an up-and-down axis, a hole is drilled in a member located below the external unit that allows the projection to pass through, the projection penetrates the hole when the external unit is in the normal position, and the external unit is preferably able to swing from the normal position to the maintenance position when the locking mechanism is in the unfixed state and the projection has slid above the hole.

[0015] In this configuration, if the projection disengages from the hole, the external unit can swing from its normal position to a maintenance position. In other words, the projection holds the external unit in place so that it remains in its normal position.

[0016] In the present invention, the external unit is provided with a projection located below it and projecting upward, the external unit is configured to swing about an up-and-down axis, a hole is drilled in the bottom surface of the external unit to allow the projection to pass through, the projection passes through the hole when the external unit is in the normal position, and the external unit is preferably able to swing from the normal position to the maintenance position when the locking mechanism is in the unfixed state and the bottom surface is slid above the projection.

[0017] With this configuration, when the protrusion comes out of the hole in the bottom surface, the external unit can swing from the normal position to the maintenance position. That is, the external unit is held by the protrusion so as to be positioned at the normal position.

[0018] In the present invention, it is preferable that the external unit is configured such that the capacitor and the cooling fan can swing separately.

[0019] With this configuration, the maintainability for each of the capacitor and the cooling fan is improved.

Brief Description of the Drawings

[0020] [Figure 1] It is a right side view showing a conventional combine. [Figure 2] It is a right side view showing an engine cooling device and an air conditioning external unit. [Figure 3] It is a plan view showing the air conditioning external unit. [Figure 4] It is a bottom view showing the air conditioning external unit. [Figure 5] It is a rear view showing a lock mechanism and a protrusion. [Figure 6] It is a view showing a swing structure for exposing a capacitor in the air conditioning external unit. [Figure 7] It is a plan view showing the air conditioning external unit with the capacitor exposed. [Figure 8] It is a view showing a swing structure for exposing an air cleaner in the air conditioning external unit. [Figure 9] It is a plan view showing the air conditioning external unit with the air cleaner exposed.

Embodiments for Carrying Out the Invention

[0021] 〔Basic Configuration of the Harvester〕 An example of an embodiment of the present invention will be described based on a standard (whole-stem input type) combine harvester. In the following description, unless otherwise specified, the direction in which the harvesting machine moves forward is defined as "forward," and the direction in which it moves backward is defined as "rear." Hereafter, descriptions such as "front and rear," "left and right," "front," and "right" are based on the front and rear direction of the machine. In the figure, the direction of arrow F is "forward," the direction of arrow B is "rear," the direction of arrow L is "left," the direction of arrow R is "right," the direction of arrow U is "up," and the direction of arrow D is "down."

[0022] Figure 1 shows a standard combine harvester, which is an example of a harvesting machine. This combine harvester comprises a traveling body 1, a cutting unit 2, a threshing device 3, a grain storage tank 4, a grain discharge device 5, an operating unit 6, and an engine E.

[0023] The mobile unit 1 comprises left and right crawler tracks 7 and a mobile frame 8. The mobile frame 8 is supported by the left and right crawler tracks 7. A fuel tank (not shown) is provided at the rear of the mobile frame 8. The harvesting unit 2 is located in front of the mobile unit 1. The harvesting unit 2 is configured to harvest planted grain stalks.

[0024] The threshing device 3 is configured to thresh the harvested grain stalks. The grain storage tank 4 stores the grain threshed by the threshing device 3. The grain storage tank 4 is located to the right of the threshing device 3. That is, the threshing device 3 and the grain storage tank 4 are side by side. The grain discharge device 5 is configured to discharge the grain from the grain storage tank 4.

[0025] The driver's unit 6 is positioned offset to one side (the right side in this embodiment) of the traveling machine body 1. The driver's unit 6 includes a driver's seat 11 where the driver sits, a cabin 10 that covers the driver's unit 6, and a lifting door 12 that allows entry and exit to the cabin 10. A small window 13 is provided to the right of the driver's seat 11 and behind the lifting door 12. A pair of upper and lower hinges are provided at the front of the lifting door 12, and the lifting door 12 can swing back and forth around the front hinge as its axis. When the lifting door 12 is closed, the rear edge of the lifting door 12 abuts against the vertical frame 14. The vertical frame 14 is configured as part of the frame of the cabin 10. The hinge of the small window 13 is connected to the upper part of the vertical frame 14. Therefore, the small window 13 can swing back and forth around the front hinge supported by the vertical frame 14 as its axis.

[0026] The vertical frame 14 extends in a straight line (or nearly straight line) in the vertical direction. As a result, the rear edge of the lifting door 12 abuts against the vertical frame 14 without any gaps, making it easier to ensure airtightness at the rear edge of the lifting door 12. Also, the front edge of the small window 13 abuts against the vertical frame 14 without any gaps, making it easier to ensure airtightness at the front edge of the small window 13.

[0027] The front ends of the front and rear frames 25 and 26 are connected to the vertical frame 14 by welding. Each of the front and rear frames 25 and 26 extends in the front-rear direction and constitutes part of the cabin frame. Handrails 27 are fixed to the front ends of each of the front and rear frames 25 and 26. The handrails 27 are adjacent to the knob portion 12A of the lifting door 12. The lower edge of the small window 13 abuts against the front and rear frame 25 without any gaps, making it easier to ensure airtightness at the lower edge of the small window 13.

[0028] An air conditioning unit (not shown) is provided to ventilate the interior of the driver's compartment 6. This air conditioning unit is housed, for example, in the roof section of the cabin 10.

[0029] Below the driver's seat 11, there is an engine compartment. A water-cooled engine E is housed in the engine compartment. Behind the driver's seat 11, there is an air cleaner 15 for the engine E. The air cleaner 15 removes dust and debris contained in the internal combustion air drawn into the engine E.

[0030] Power from engine E is transmitted to the left and right crawler tracks 7 and the harvesting unit 2 via a transmission unit (not shown) (including a hydrostatic continuously variable transmission and a gear-type transmission mechanism). This transmission unit is located between the front of the left crawler track 7 and the front of the right crawler track 7.

[0031] A dustproof case 16 is provided on the right side of the mobile body 1. The dustproof case 16 covers the engine E and the engine cooling system 20 from the outside in the left-right direction of the mobile body (in this embodiment, the right side; the same applies hereinafter). The dustproof case 16 is configured to cover the engine E and the engine cooling system 20 from the outside in the left-right direction of the mobile body while allowing ventilation and preventing the passage of dust. The dustproof case 16 is configured to swing open and closed around a pivot axis Y1 that extends along the vertical direction of the mobile body.

[0032] The engine cooling system 20 is positioned on the outside of the aircraft in the left-right direction relative to the engine E. The engine cooling system 20 comprises a radiator 21, an intercooler 22, and an oil cooler 23. Thus, the engine cooling system 20 is configured to cool the engine E.

[0033] The radiator 21 cools the coolant of the engine E with cooling air generated by a cooling fan (not shown). The intake air for the engine E is compressed by a supercharger (not shown), and this compressed air is cooled by the intercooler 22. The oil cooler 23 cools the oil (hydraulic fluid) for the HST (hydrostatic continuously variable transmission) (not shown). In addition, the engine cooling system 20 has a fuel cooler (not shown) that cools the fuel supplied to the engine E. Furthermore, the dustproof case 16 covers the engine cooling system 20 and removes dust contained in the cooling air introduced from the outside.

[0034] [Configuration of the external air conditioning unit] As shown in Figures 1 and 2, an external air conditioning unit 30 ("external unit") is provided above the engine cooling system 20 and the dustproof case 16. As shown in Figure 3, a receiver 28 and an air cleaner 15 are located on the side of the external air conditioning unit 30, inside the aircraft body.

[0035] The external air conditioning unit 30 is positioned on the outside of the cabin 10. The external air conditioning unit 30 is located to the right rear of the driver's seat 11. The vertical range of the external air conditioning unit 30 overlaps with the vertical range of the driver's seat 11.

[0036] The external air conditioning unit 30 comprises an inner frame 31, an outer frame 32, a dust cover 33, a condenser 34, and an air conditioning cooling fan 35. The condenser 34 has a rectangular shape, and the rectangular edges of the condenser 34 are supported by the inner frame 31. The outer frame 32 has a shape that overlaps with the inner frame 31 in a side view and is adjacent to the inner frame 31 on the outer side of the unit. The air conditioning cooling fan 35 is housed inside the outer frame 32. The air conditioning cooling fan 35 has an electric motor and generates cooling air for the condenser 34. The outer side portion of the outer frame 32 is covered by the dust cover 33. The dust cover 33 covers the condenser 34 and the air conditioning cooling fan 35 from the outer side of the unit and removes dust contained in the cooling air introduced from the outside.

[0037] The condenser 34 is configured to cool the refrigerant used in the aforementioned air conditioning system (for the air conditioner). The condenser 34 is connected to a flexible introduction hose (not shown) for introducing the refrigerant into the condenser 34 and a flexible discharge hose (not shown) for discharging the refrigerant from the condenser 34. The introduction hose is connected to the upper part of the rear edge of the condenser 34. The discharge hose is connected to the lower part of the rear edge of the condenser 34 and is connected to the receiver 28.

[0038] The receiver 28 receives the refrigerant cooled by the condenser 34 from the outlet hose. At this time, the refrigerant contains a mixture of gas and liquid. Therefore, the receiver 28 separates the gas and liquid in the refrigerant. The air conditioning system (not shown) that air-conditions the inside of the operating unit 6 has a known evaporator (not shown), etc. The receiver 28 sends the liquid refrigerant to the expansion valve, the evaporator, etc.

[0039] The external air conditioning unit 30 is supported by the front and rear frames 25 and 26, respectively. In each of the front and rear frames 25 and 26, a axial hole for supporting the external air conditioning unit 30 is drilled in the portion that intersects with the pivot axis Y2.

[0040] An upper projection rod portion 36 is connected to the upper surface of the outer frame 32, and the upper projection rod portion 36 extends upward from the upper surface of the outer frame 32. In addition, a lower projection rod portion 37 is connected to the bottom surface of the outer frame 32, and the lower projection rod portion 37 extends downward from the bottom surface of the outer frame 32.

[0041] The upper projection rod portion 36 is inserted through the axial center hole of the front and rear frames 25, and the lower projection rod portion 37 is inserted through the axial center hole of the front and rear frames 26. In this state, the respective axial center holes of the front and rear frames 25 and 26, the upper projection rod portion 36, and the lower projection rod portion 37 are aligned along the vertical pivot axis Y2. As a result, the entire air conditioning external unit 30 is configured to pivot around the vertical pivot axis Y2. Therefore, the air conditioning external unit 30 is configured to pivot between a normal position in which it overlaps with the air cleaner 15 in a side view of the unit and closes the air cleaner 15, and a maintenance position in which it exposes the air cleaner 15.

[0042] The capacitor 34 is also configured to swing around the pivot axis Y2. Therefore, even when the capacitor 34 is in the maintenance position, the inlet and outlet hoses connected to the capacitor 34 are long enough to slacken without being pulled.

[0043] As shown in Figure 3, an upper base support plate 31A is provided on the upper part of the pivot base end of the inner frame 31. Also, as shown in Figure 4, a lower base support plate 31B is provided on the upper part of the pivot base end of the inner frame 31. An insertion hole is drilled in the upper base support plate 31A, and the upper projection rod portion 36 passes through the insertion hole in the upper base support plate 31A. The lower projection rod portion 37 also passes through the insertion hole in the lower base support plate 31B.

[0044] Two snap locks 38 are attached to the rear edges of the inner frame 31 and the outer frame 32, respectively. The two snap locks 38 are arranged vertically. The snap locks 38 are configured to be switchable between a connected state, which connects the rear edges of the inner frame 31 and the outer frame 32, and an unconnected state, which releases the connection between the rear edges of the inner frame 31 and the outer frame 32.

[0045] In this manner, with the two upper and lower snap locks 38 unlocked, the inner frame 31 and the outer frame 32 are each configured to swing independently around the pivot axis Y2.

[0046] [Locking mechanism] As shown in Figures 2, 4, and 5, a locking mechanism 40 is provided at the bottom of the outer frame 32. The locking mechanism 40 is adjacent to the rear end of the front and rear frames 26. The locking mechanism 40 is configured to be switchable between a fixed state in which the air conditioning external unit 30 is fixed in its normal position and an unfixed state in which the air conditioning external unit 30 is not fixed in its normal position.

[0047] The locking mechanism 40 is equipped with a U-shaped member 41, an L-shaped part 42, a coil spring 43, a washer 44, and a snap pin 45.

[0048] The U-shaped member 41 is fixed to the lower surface portion of the bottom of the outer frame 32 by welding. The U-shaped member 41 has a front side and a rear side, and holes are drilled in both the front side and the rear side. The L-shaped portion 42 is inserted through the holes in the front side and the rear side of the U-shaped member 41.

[0049] Of the L-shaped portion 42, the front portion on the side where the front and rear frames 26 are located extends along the longitudinal direction of the aircraft. A hole 26h is drilled in the rear end of the front and rear frames 26, and the front portion of the L-shaped portion 42 is inserted through the hole 26h. Of the L-shaped portion 42, the rear portion opposite to the side where the front and rear frames 26 are located is bent into an L shape.

[0050] The coil spring 43 and washer 44 are fitted onto the L-shaped portion 42 and are positioned between the front and rear portions of the U-shaped member 41. A through-hole for the snap pin 45 is formed in the front portion of the L-shaped portion 42. The snap pin 45 is inserted into the through-hole with the coil spring 43 and washer 44 fitted onto the L-shaped portion 42. The washer 44 is always positioned further rear than the snap pin 45. The coil spring 43 is compressed between the washer 44 and the rear portion of the U-shaped member 41. The coil spring 43 presses against the rear portion of the washer 44. As a result, the coil spring 43 exerts a biasing force on the L-shaped portion 42, causing it to displace towards the front of the machine.

[0051] When the external air conditioning unit 30 is in its normal position and the front part of the L-shaped portion 42 passes through the hole 26h, the locking mechanism 40 enters a fixed state that secures the external air conditioning unit 30 in its normal position. This state is maintained by the biasing force of the coil spring 43.

[0052] To change the locking mechanism 40 from this state to the unfixed state, the worker pulls the L-shaped part 42 backward against the biasing force of the coil spring 43. This causes the front part of the L-shaped part 42 to come out of the hole 26h in the front and rear frame 26. As a result, the locking mechanism 40 is in an unfixed state, which does not fix the air conditioning external unit 30 in its normal position.

[0053] Furthermore, when the worker releases the L-shaped part 42 from their hand, the L-shaped part 42 is displaced forward by the biasing force of the coil spring 43. When the front part of the L-shaped part 42 passes through the hole 26h, the locking mechanism 40 becomes fixed.

[0054] [Protrusion] As described above, the rectangular edge portion of the condenser 34 is supported by the inner frame 31. As shown in Figures 4 and 5, a projection 39 is attached to the bottom surface portion of the inner frame 31. That is, the bottom surface portion of the inner frame 31 of the air conditioning external unit 30 is provided with a downward-projecting projection 39.

[0055] The right end of the left and right frames 50 is welded to the front and rear central portion of the front and rear frames 26. The left and right frames 50 are configured as part of the cabin frame. An L-shaped member 51 is connected to the left and right frames 50 at a location adjacent to the connection portion with the front and rear frames 26. A hole 51h is drilled in the upper portion of the L-shaped member 51. That is, a hole 51h is drilled in the L-shaped member 51 located below the air conditioning external unit 30. The hole 51h allows the projection 39 to pass through.

[0056] When the external air conditioning unit 30 is in its normal position, the projection 39 penetrates the hole 51h vertically. In this state, at least the condenser 34 and the inner frame 31 are held in their normal positions. That is, the projection 39 penetrates the hole 51h when at least the condenser 34 and the inner frame 31 are in their normal positions.

[0057] Furthermore, when the L-shaped portion 42 is hooked into the hole 26h of the front and rear frame 26 by the biasing force of the coil spring 43, the entire air conditioning external unit 30 becomes unable to slide vertically. As a result, the projection 39 cannot be dislodged from the hole 51h. This prevents the air conditioning external unit 30 from suddenly swinging from its normal position to the maintenance position due to unexpected vertical vibrations or the like.

[0058] [Oscillating configuration of external air conditioning unit] The external air conditioning unit 30 in this embodiment has a swing configuration for cleaning the outer surface of the condenser 34, and a swing configuration for cleaning the outer surface of the condenser 34 and the air cleaner 15. The external air conditioning unit 30 is configured such that the inner frame 31 that supports the condenser 34 and the outer frame 32 that supports the air conditioning cooling fan 35 can each swing separately and around the same swing axis Y2.

[0059] Based on Figures 6 and 7, the swinging configuration for maintaining the outer surface of the condenser 34 will be explained. As shown in Figure 6, the operator unlocks the two upper and lower snap locks 38 (step #01) and pulls the L-shaped part 42 backward against the biasing force of the coil spring 43 (step #02), causing the L-shaped part 42 to detach from the holes 26h of the front and rear frames 26. In this state, the outer frame 32 becomes swingable outward to the side of the machine. When the operator swings the outer frame 32 outward to the side of the machine (step #03), as shown in Figure 7, the outer frame 32, dust cover 33, air conditioning cooling fan 35, and locking mechanism 40 swing together to the maintenance position outward to the side of the machine. At this time, the projection 39 is inserted through the hole 51h of the L-shaped member 51. As a result, the inner frame 31 and the condenser 34 are fixed to the L-shaped member 51 by the projection 39. As a result, the inner frame 31 and the capacitor 34 are held in their normal positions.

[0060] Based on Figures 8 and 9, the swinging configuration for maintaining the outer surface of the condenser 34 and the air cleaner 15 will be explained. As shown in Figure 8, when the worker pulls the L-shaped part 42 backward against the biasing force of the coil spring 43 (step #11), the L-shaped part 42 disengages from the hole 26h of the front and rear frame 26. In this state, the entire air conditioning external unit 30 becomes slidable in the vertical direction. Then, when the worker slides the entire air conditioning external unit 30 upward while the snap lock 38 is locked (step #12), the entire air conditioning external unit 30 becomes swivelable outward to the side of the machine. That is, when the locking mechanism 40 is not fixed and the projection 39 is slid above the hole 51h, the air conditioning external unit 30 can swing integrally from the normal position to the maintenance position.

[0061] At this time, the inner frame 31 and the outer frame 32 are fastened together by two snap locks 38, one above and one below, preventing them from swinging independently. When the worker swings the entire air conditioning external unit 30 outward to the side of the machine (step #13), the entire air conditioning external unit 30 swings together to the maintenance position outward to the side of the machine, as shown in Figure 9.

[0062] [Another embodiment] The present invention is not limited to the configurations exemplified in the embodiments described above, and other representative embodiments of the present invention are described below.

[0063] (1) The pivot axis Y2 is located at the front of the external air conditioning unit 30. The embodiment is not limited to this one, and the pivot axis Y2 may be located at the front of the external air conditioning unit 30.

[0064] (2) In the above embodiment, L-shaped members 51 are connected to the left and right frames 50 at locations adjacent to the connection portions with the front and rear frames 26. A hole 51h is drilled in the upper surface portion of the L-shaped member 51. The embodiment is not limited to this one, and the hole may be drilled directly into the left and right frames 50.

[0065] (3) In the above embodiment, the bottom surface of the external air conditioning unit 30 is provided with a projection 39 that protrudes downward. The embodiment is not limited to this, and the projection 39 may be configured to protrude upward from, for example, the left and right frames 50 or the L-shaped member 51. That is, the external air conditioning unit 30 may be configured to have a projection 39 that is located below it and protrudes upward. In this case, a hole may be drilled in the bottom of the inner frame 31, and the projection 39 may penetrate the hole from below. Furthermore, the external air conditioning unit 30 may be configured to swing from the normal position to the maintenance position when the locking mechanism 40 is not fixed and the bottom surface of the inner frame 31 is slid above the projection 39.

[0066] (4) The air cleaner 15 may not be provided on the side of the air conditioning external unit 30.

[0067] (5) The receiver 28, which is positioned laterally and inward of the air conditioning external unit 30, is adjacent to the rear of the air conditioning external unit 30. The embodiment is not limited to this, and the receiver 28 may be configured to be adjacent to the front of the air conditioning external unit 30.

[0068] Furthermore, the configurations disclosed in the above-described embodiments (including other embodiments, the same applies hereinafter) can be applied in combination with configurations disclosed in other embodiments, as long as no inconsistencies arise. In addition, the embodiments disclosed herein are illustrative, and the embodiments of the present invention are not limited thereto, and can be modified as appropriate without departing from the object of the present invention. [Industrial applicability]

[0069] The present invention is applicable to harvesting machines equipped with an air conditioning system for conditioned the interior of the cabin. Therefore, in addition to the conventional combine harvester exemplified in the above embodiments, the present invention is applicable to various harvesting machines such as self-propelled combine harvesters, corn harvesters, sugarcane harvesters, soybean harvesters, and root vegetable harvesters. [Explanation of Symbols]

[0070] 6: Driver's Unit 10: Cabin 11: Driver's seat 15: Air cleaner 16: Dustproof case 20: Engine cooling system 30: Air conditioning external unit (external unit) 34: Capacitor 39:Protrusion 40: Locking mechanism 51h: Hole E: Engine

Claims

1. The engine and The driver's compartment and, The cabin covering the aforementioned driver's section, An air conditioning system for conditioned the interior of the cabin, An external unit having a condenser for the air conditioning system and a cooling fan for generating cooling air for the condenser, and positioned outside the cabin, An engine cooling system for cooling the aforementioned engine, The engine cooling system is provided with a dustproof case that covers it and removes dust contained in the cooling air introduced from the outside, The aforementioned external unit is a harvesting machine positioned above the dustproof case.

2. The aforementioned driver's compartment is equipped with a driver's seat in which the driver sits, The harvesting machine according to claim 1, wherein the vertical range of the external unit and the vertical range of the driver's seat overlap.

3. The engine is equipped with an air cleaner that removes dust and debris contained in the internal combustion air drawn into the engine. The harvesting machine according to claim 1, wherein the external unit is configured to swing between a normal position in which it overlaps with the air cleaner in a side view of the machine and closes the air cleaner, and a maintenance position in which it exposes the air cleaner.

4. The harvesting machine according to claim 3, further comprising a locking mechanism that can switch between a fixed state in which the external unit is fixed in the normal position and an unfixed state in which the external unit is not fixed in the normal position.

5. The bottom surface of the aforementioned external unit is provided with a projection that protrudes downward, The external unit is configured to swing around an axis in the vertical direction, A hole is drilled in the member located below the external unit, which allows the projection to pass through. The projection penetrates the hole when the external unit is in the normal position. The harvesting machine according to claim 4, wherein the external unit is swingable from the normal position to the maintenance position when the locking mechanism is in the unfixed state and the projection is slid above the hole.

6. A projection is provided located below the aforementioned external unit and projecting upward, The external unit is configured to swing around an axis in the vertical direction, A hole is drilled in the bottom surface of the external unit to allow the insertion of the projection. The projection penetrates the hole when the external unit is in the normal position. The harvesting machine according to claim 4, wherein the external unit is swingable from the normal position to the maintenance position when the locking mechanism is in the unfixed state and the bottom surface is slid above the projection.

7. The harvesting machine according to any one of claims 1 to 6, wherein the external unit is configured such that the condenser and the cooling fan can each be oscillated independently.

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