Harvesting machine

Abstract

To facilitate radiator maintenance. [Solution] The aircraft is equipped with a water-cooled engine, a radiator 20 positioned outside the aircraft in the left-right direction relative to the engine and cooling the engine's cooling water, a first cooling device 21 positioned outside the aircraft in the left-right direction relative to the radiator 20, and a second cooling device 22 positioned outside the aircraft in the left-right direction relative to the radiator 20. The first cooling device 21 is configured to swing open and closed around a first swing axis Z1, between a first closed position which is the orientation during use and a first open position which is an orientation that is opened further outwards in the left-right direction relative to the first closed position. The first swing axis Z1 is an axis that extends along the front-rear direction of the aircraft and is positioned above the first cooling device 21.

Description

Technical Field

[0001] The present invention relates to a harvester.

Background Art

[0002] Conventionally, as a harvester, for example, the harvester described in Patent Document 1 is known. The harvester described in Patent Document 1 includes a water-cooled engine (referred to as "engine

[16] " in the document), a radiator disposed on the outer side of the engine in the left-right direction of the machine body for cooling cooling water for the engine (referred to as "radiator

[17] " in the document), a cooling fan disposed between the engine and the radiator in the left-right direction of the machine body for supplying cooling air to the radiator (referred to as "cooling fan

[18] " in the document), a first cooling device disposed on the outer side of the radiator in the left-right direction of the machine body (referred to as "oil cooler

[60] " in the document), and a second cooling device disposed on the outer side of the radiator in the left-right direction of the machine body (referred to as "intercooler

[80] " in the document).

Prior Art Literature

Patent Document

[0003]

Patent Document 1

Summary of the Invention

Problems to be Solved by the Invention

[0004] In the harvester described in Patent Document 1, when performing maintenance on the radiator, the first cooling device and the second cooling device must be removed, and there is room for improvement in terms of facilitating the maintenance of the radiator.

[0005] In view of the above situation, there is a demand for a harvester that allows easy maintenance of the radiator.

Means for Solving the Problems

[0006] The harvesting machine of the present invention comprises a water-cooled engine, a radiator positioned outside the engine in the left-right direction of the machine body for cooling the engine's cooling water, a first cooling device positioned outside the radiator in the left-right direction of the machine body, and a second cooling device positioned outside the radiator in the left-right direction of the machine body, wherein the first cooling device is configured to swing open and closed around a first pivot axis between a first closed position, which is the orientation when the first cooling device is in use, and a first open position, which is the orientation when the first cooling device is open further outwards in the left-right direction of the machine body than the first closed position, wherein the second cooling device is configured to swing open and closed around a second pivot axis between a second closed position, which is the orientation when the second cooling device is in use, and a second open position, which is the orientation when the second cooling device is open further outwards in the left-right direction of the machine body than the second closed position, wherein the first pivot axis is an axis extending along the front-rear direction of the machine body and is positioned above the first cooling device. Furthermore, the harvesting machine of the present invention is equipped with a water-cooled engine, a radiator positioned outside the machine in the left-right direction relative to the engine and cooling the cooling water for the engine, a first cooling device positioned outside the machine in the left-right direction relative to the radiator, a second cooling device positioned outside the machine in the left-right direction relative to the radiator, and a holder capable of holding the first cooling device in an open state, wherein the first cooling device has a first closed position, which is the position when the first cooling device is in use, and a first cooling device that is opened further outward in the left-right direction relative to the machine than the first closed position, around a first pivot axis. The second cooling device is configured to swing open and closed over a first open position, which is the posture in which the second cooling device is used, and a second open position, which is the posture in which the second cooling device is opened outward in the left-right direction of the aircraft than the second closed position, and the first swing axis is an axis that extends along the front-rear direction of the aircraft and is located above the first cooling device, and the holder is configured to hold the first cooling device in the first open position when it is opened.

[0007] According to the present invention, for example, when an operator swings the first cooling device upward around the first pivot axis to change its position to the first open position, and swings the second cooling device around the second pivot axis to change its position to the second open position, the outer side portion of the radiator in the left-right direction of the machine (lateral outer side portion) is opened. This allows for easy access to the lateral outer side portion of the radiator from the outside in the left-right direction of the machine when performing maintenance on the radiator. In addition, the back surfaces of the first cooling device and the second cooling device are also opened. In particular, when the first cooling device swings upward to change its position to the first open position, dust and other debris attached to the back surface of the first cooling device are more easily removed. This makes it easier for operators to perform maintenance on the first and second cooling devices. In other words, a harvesting machine that allows for easy radiator maintenance can be realized. Furthermore, with this configuration, even if the first cooling device swings up and down to open and close, the first cooling device is held in the first open position by a holder. This prevents the first cooling device from returning to the first closed position due to its own weight.

[0008] In the present invention, it is preferable that the second pivot axis is an axis extending in the vertical direction and is located on one side of the aircraft body, either front or rear, with respect to the second cooling device.

[0009] In this configuration, the second cooling unit swings open and closed horizontally. Therefore, for example, when an operator swings the second cooling unit open and closed, there is no need to lift it. As a result, even if the second cooling unit is heavy, an operator can swing it open and closed with little force. Furthermore, the first and second cooling devices open and close by oscillating in different directions. This makes it possible to configure the system so that the first and second cooling devices do not interfere with each other when they oscillate open and closed.

[0010] In the present invention, it is preferable that the second pivot axis is located on the rear side of the machine body relative to the second cooling device.

[0011] With this configuration, the second cooling device can be moved to the second open position by swinging it backward by an operator. Therefore, for example, when an operator swings the second cooling device to open or close it, the second cooling device can be easily operated from the front of the machine.

[0012] In the present invention, the first cooling device is preferably a condenser for cooling a refrigerant for an air conditioner, and is provided with a receiver for the condenser, and the condenser and the receiver are configured to swing integrally around the first pivot axis.

[0013] In this configuration, the condenser and receiver are positioned next to each other and oscillate as a single unit. This allows for a configuration where the piping between the condenser and receiver is robust, less prone to refrigerant leakage, and is also short.

[0014] In the present invention, the first cooling device is a condenser for cooling a refrigerant for an air conditioner, wherein the condenser is connected to a tubular first introduction member for introducing the refrigerant into the condenser and a first discharge member for discharging the refrigerant from the condenser, and at least one of the first introduction member and the first discharge member is connected to the portion of the condenser on the side where the first pivot axis is located.

[0015] In this configuration, at least one of the first introduction member and the first outlet member is located on the side of the first pivot axis. This allows for a compact arrangement of components that handle the refrigerant for the air conditioner.

[0016] In the present invention, it is preferable that at least one of the first introduction member and the first exit member extends along the first pivot axis.

[0017] With this configuration, since at least one of the first introduction member and the first outlet member extends along the first pivot axis, it is possible to prevent twisting of at least one of the first introduction member and the first outlet member when an operator swings the first cooling device open and closed.

[0018] In the present invention, a third cooling device is provided which is located outside the radiator in the left-right direction of the aircraft body, and the third cooling device is configured to swing open and closed between a third closed position, which is the orientation when the third cooling device is in use, and a third open position, which is the orientation when the third cooling device is opened further outward in the left-right direction of the aircraft body than the third closed position, around the second pivot axis, and it is preferable that the second cooling device and the third cooling device are configured to swing integrally around the second pivot axis.

[0019] In this configuration, when an operator or other person swings the third cooling unit around the second pivot axis to change its position to the third open position, the outer side of the radiator in the left-right direction of the machine (lateral outer side) is opened. This allows operators or other people to easily access the lateral outer side of the radiator from the outside in the left-right direction of the machine when performing maintenance on the radiator. The back of the third cooling unit is also opened. This allows operators or other people to easily perform maintenance on the third cooling unit. Furthermore, operators or other people can open and close the second and third cooling units with a single operation.

[0020] In the present invention, it is preferable that the second cooling device is connected to a tubular second introduction member for introducing the object to be cooled into the second cooling device and a second exit member for exiting the object to be cooled from the second cooling device, and that the third cooling device is connected to a tubular third introduction member for introducing the object to be cooled into the third cooling device and a third exit member for exiting the object to be cooled from the third cooling device, and that the second introduction member and the second exit member are arranged on the side of the second cooling device where the second pivot axis is located, and that the third introduction member and the third exit member are arranged on the side of the third cooling device where the second pivot axis is located.

[0021] According to this configuration, the second introduction member and the second discharge member are located on the same side of the second cooling device (the side where the second swing axis is located). Thereby, the second introduction member and the second discharge member can be easily grouped together. Further, the third introduction member and the third discharge member are located on the same side of the third cooling device (the side where the second swing axis is located). Thereby, the third introduction member and the third discharge member can be easily grouped together.

[0022] In the present invention, it is preferable that each of the second introduction member, the second discharge member, the third introduction member, and the third discharge member is constituted by a member at least a part of which is elastically deformable.

[0023] With this configuration, even when the second cooling device and the third cooling device swing to open and close, and the second introduction member, the second discharge member, the third introduction member, and the third discharge member are twisted, the twist is absorbed by the elastic deformation of the relevant members.

[0024] In the present invention, it is preferable that at least one of the second introduction member, the second discharge member, the third introduction member, and the third discharge member extends along the second swing axis.

[0025] When the second introduction member and the second discharge member are configured to extend along the second swing axis, the second introduction member and the second discharge member can be made less likely to be twisted when the second support frame is swung to open and close. Further, when the third introduction member and the third discharge member are configured to extend along the third swing axis, the third introduction member and the third discharge member can be made less likely to be twisted when the third support frame is swung to open and close.

[0026] In the present invention, it is preferable that the second cooling device is an oil cooler that cools hydraulic working oil, and the third cooling device is a fuel cooler that cools fuel to be supplied to the engine.

[0027] With this configuration, an operator or the like can open and close the oil cooler and the fuel cooler in a single operation.

[0028] In the present invention, it is preferable that the first cooling device is lighter than the second cooling device.

[0029] This configuration allows operators to open and close the first cooling device with as little force as possible.

[0030] In the present invention, a dust cover is provided on the outside of the first cooling device and the second cooling device in the left-right direction of the machine body, and it is preferable that the dust cover is provided at the lower part of the dust cover and is configured to swing open and closed around a pivot axis that extends along the front-rear direction of the machine body.

[0031] In this configuration, dust covers are positioned on the outside of the radiator, first cooling unit, and second cooling unit in the left-right direction of the aircraft. This reduces the risk of dust accumulating on the radiator, first cooling unit, and second cooling unit. Furthermore, the dust cover swings around a pivot axis located at the bottom of the dust cover. As a result, the first cooling unit and the dust cover swing in different directions to open and close. This makes it possible to configure the system so that the first cooling unit and the dust cover do not interfere with each other when swinging open and closed.

[0032] In the present invention, it is preferable that the first cooling device is positioned outside the left-right direction of the machine body relative to the second cooling device, the first cooling device is repositionable from the first closed position to the first open position with the dust cover open, and the second cooling device is repositionable from the second closed position to the second open position with the first cooling device in the first open position.

[0033] With this configuration, workers can easily maintain the radiator, the back of the dust cover, the back of the first cooling unit, and the back of the second cooling unit by first opening the dust cover, then the first cooling unit, and then the second cooling unit.

[0034] In the present invention, it is preferable that a holder is provided for holding the first cooling device in the first open position.

[0035] In this configuration, even if the first cooling device swings up and down to open and close, the first cooling device is held in the first open position by the holder. This prevents the first cooling device from returning to the first closed position due to its own weight. [Brief explanation of the drawing]

[0036] [Figure 1] This is a right side view of a combine harvester. [Figure 2] This is a plan view of a combine harvester. [Figure 3] This is a right side view showing the cooling system unit. [Figure 4] This is a plan view showing the cooling system unit. [Figure 5] This is a rear view showing the cooling system unit with the dust cover closed. [Figure 6] This is a rear view showing the cooling system unit with the dust cover open. [Figure 7] This is a rear view showing the cooling system unit with the dust cover open and the first cooling device in the first open position. [Figure 8] This is a plan view showing the cooling system unit with the dust cover open, the first cooling device in the first open position, and the second cooling device in the second open position. [Modes for carrying out the invention]

[0037] Embodiments for carrying out the present invention will be described based on the drawings. In the following description, the direction of arrow "F" is the "front side of the aircraft", the direction of arrow "B" is the "rear side of the aircraft", the direction of arrow "L" is the "left side of the aircraft", the direction of arrow "R" is the "right side of the aircraft", the direction of arrow "U" is the "upper side of the aircraft", and the direction of arrow "D" is the "lower side of the aircraft".

[0038] [Overall configuration of the combine harvester] Figures 1 and 2 show a self-propelled combine harvester (corresponding to the "harvesting machine" according to the present invention). 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, a driver's cabin 6, and a drive unit 7.

[0039] The mobile unit 1 comprises left and right crawler tracks 9 and a mobile frame 10. The mobile frame 10 is supported by the left and right crawler tracks 9. A fuel tank (not shown) is provided at the rear of the mobile frame 10. The harvesting unit 2 is located in front of the mobile unit 1. The harvesting unit 2 is configured to harvest planted grain stalks.

[0040] The threshing device 3 is configured to thresh the harvested grain stalks. The grain storage tank 4 is located next to the threshing device 3 (to the right in this embodiment). The grain storage tank 4 is configured to store the grain. The grain discharge device 5 is configured to discharge the grain from the grain storage tank 4.

[0041] The driver's cabin 6 is positioned off-center to one side (the right side in this embodiment) of the traveling machine body 1. The driver's cabin 6 comprises a driver's section 11 in which the driver sits, and a cabin section 12 that covers the driver's section 11. The driver's section 11 is equipped with a driver's seat 13. An air conditioning unit (not shown) is provided to provide air conditioning inside the driver's cabin 6. This air conditioning unit is housed, for example, in the roof section of the cabin 12.

[0042] Below the driver's seat 13, an engine room 14 is formed. The engine room 14 houses the drive unit 7. Behind the driver's seat 13, an air cleaner room 15 is formed. The air cleaner room 15 houses the air cleaner 16 for engine E.

[0043] A dust cover 17 is provided on the right side of the mobile body 1. The dust cover 17 covers the engine room 14 and the air cleaner room 15 from the outside in the left-right direction of the mobile body (in this embodiment, the right side; the same applies hereinafter). The dust cover 17 is configured to cover the engine room 14 and the air cleaner room 15 from the outside in the left-right direction of the mobile body while allowing ventilation and preventing the passage of dust. The dust cover 17 is configured to swing open and closed around a pivot axis Z3 that extends along the front-rear direction of the mobile body. The pivot axis Z3 is provided at the bottom of the dust cover 17.

[0044] The driving unit 7 comprises a water-cooled engine E, an exhaust purification device 18, a cooling system unit U, and a cooling fan 19. The exhaust purification device 18 has a DPF (diesel particulate filter) and is configured to purify the exhaust from engine E. The cooling system unit U is located on the outside of the aircraft in the left-right direction relative to engine E. The cooling system unit U comprises a radiator 20, a condenser 21 (the "first cooling device" as described in the claims), an oil cooler 22 (the "second cooling device" as described in the claims), and a fuel cooler 23 (the "third cooling device" as described in the claims).

[0045] The power from engine E is transmitted to the left and right crawler tracks 9 and the harvesting unit 2 via a transmission unit (not shown) (including a hydrostatic continuously variable transmission and a gear-type transmission mechanism). The gear shifting unit is located between the front of the left crawler track 9 and the front of the right crawler track 9.

[0046] The cooling fan 19 is positioned between the engine E and the radiator 20 in the left-right direction of the aircraft. The cooling fan 19 is configured to supply cooling air to the cooling system unit U. The cooling fan 19 is configured to be switchable between a forward rotation state in which outside air flows into the engine compartment 14 through the dust cover 17, and a reverse rotation state in which air from inside the engine compartment 14 flows out of the aircraft through the dust cover 17.

[0047] [Cooling System Unit] The radiator 20 is configured to cool the coolant for engine E. As shown in Figures 2 to 8, the radiator 20 is positioned on the outside of the aircraft in the left-right direction relative to engine E. A shroud 25 covering the cooling fan 19 is supported on the left side (inside the aircraft) of the radiator 20. The radiator 20 is supported by a frame-shaped radiator frame 26.

[0048] As shown in Figures 3 to 6, the condenser 21, oil cooler 22, fuel cooler 23, and receiver 24 are supported on the right side (outside of the aircraft body) of the radiator frame 26. The radiator duct, which serves as a passage for air flowing through the cooling fan 19, is formed by a dust cover 17. The dust cover 17 is supported by the aircraft frame 10. The condenser 21, oil cooler 22, fuel cooler 23, and receiver 24 are located inside the radiator duct.

[0049] The condenser 21 is configured to cool the refrigerant for the air conditioning unit (for the air conditioner) as described above. The condenser 21 is positioned outside the radiator 20 in the left-right direction of the unit, and also outside the oil cooler 22 and fuel cooler 23 in the left-right direction of the unit. Specifically, the condenser 21 is positioned to the right of the oil cooler 22 and fuel cooler 23. The condenser 21 is supported by the first bracket 31. Specifically, connecting portions 21A are formed at two locations, above and below, on the front edge and rear edge of the condenser 21. The four connecting portions 21A are connected to the first bracket 31 by bolts 31a.

[0050] The first bracket 31 is supported by the radiator frame 26 via a pair of front and rear first hinges 34. Therefore, the first bracket 31 is configured to pivot around a first pivot axis Z1. The first pivot axis Z1 is an axis extending along the longitudinal direction of the machine body and is located above the condenser 21. In other words, the condenser 21 is configured to pivot around the first pivot axis Z1. In this embodiment, the first pivot axis Z1 and the pivot axis Z3 are parallel to each other.

[0051] The condenser 21 is connected to a tubular first introduction member 28A for introducing refrigerant into the condenser 21 and a tubular first discharge member 28B for discharging the refrigerant from the condenser 21. The first introduction member 28A is made of a flexible tubular member. The first introduction member 28A also penetrates the radiator frame 26 in front of the condenser 21. The first lead member 28B is made of a metal tubular member and is connected to the receiver 24 for the capacitor 21. The first introduction member 28A is connected to the upper part of the leading edge of the capacitor 21. The first lead member 28B is connected to the lower part of the leading edge of the capacitor 21. The first introduction member 28A is connected to the portion of the capacitor 21 on the side where the first pivot axis Z1 is located.

[0052] The oil cooler 22 is configured to cool the oil for the HST (hydraulic fluid). The oil cooler 22 is located on the outside of the radiator 20 in the left-right direction of the vehicle. Specifically, the oil cooler 22 is located to the right of the radiator 20. The oil cooler 22 may also be configured to cool, for example, the oil (lubricating oil) for the transmission case.

[0053] The oil cooler 22 is connected to a tubular second introduction member 29A that introduces the hydraulic fluid to be cooled into the oil cooler 22, and a tubular second outlet member 29B that discharges the hydraulic fluid to be cooled from the oil cooler 22. The second introduction member 29A and the second outlet member 29B are made of flexible tubular members. In other words, the second introduction member 29A and the second outlet member 29B are each made of a member that is elastically deformable in at least a portion thereof. The second introduction member 29A and the second outlet member 29B penetrate the radiator frame 26 at the rear of the oil cooler 22.

[0054] The second inlet member 29A and the second outlet member 29B are positioned on the side of the oil cooler 22 where the second pivot axis Z2 is located. The second inlet member 29A is connected to the upper part of the trailing edge of the oil cooler 22. The second outlet member 29B is connected to the lower part of the trailing edge of the oil cooler 22.

[0055] The fuel cooler 23 is configured to cool the fuel supplied to the engine E. The fuel cooler 23 is located outward in the lateral direction relative to the radiator 20. The fuel cooler 23 is supported by a second bracket 32. Specifically, the trailing edge of the fuel cooler 23 is connected to the second bracket 32.

[0056] An oil cooler 22 is connected to the front edge of the fuel cooler 23, on the side opposite to the side connected to the second bracket 32, via a third bracket 33. The oil cooler 22 and the fuel cooler 23 are arranged front to back inside the radiator duct. The oil cooler 22 is located in front of the fuel cooler 23.

[0057] The second bracket 32 ​​is supported by the radiator frame 26 via a pair of upper and lower second hinges 35. Therefore, the second bracket 32 ​​is configured to pivot around the second pivot axis Z2. The second pivot axis Z2 is an axis extending along the vertical direction of the machine body and is located rearward relative to the oil cooler 22 and fuel cooler 23. In other words, the oil cooler 22 and fuel cooler 23 are configured to pivot around the second pivot axis Z2.

[0058] The oil cooler 22 is longer vertically than the fuel cooler 23. Therefore, the upper edge of the oil cooler 22 is located above the upper edge of the fuel cooler 23, and the lower edge of the oil cooler 22 is located below the lower edge of the fuel cooler 23. In the closed position, the condenser 21 and the oil cooler 22 overlap each other in a side view. Also, in the closed position, the condenser 21 and the fuel cooler 23 overlap each other in a side view. Furthermore, in the closed position, the oil cooler 22 and the fuel cooler 23 overlap each other in a front view and a rear view.

[0059] The fuel cooler 23 is connected to a tubular third introduction member 30A that introduces the fuel to be cooled into the fuel cooler 23, and a tubular third outlet member 30B that discharges the fuel to be cooled from the fuel cooler 23. The third introduction member 30A and the third outlet member 30B are made of flexible tubular members. In other words, the third introduction member 30A and the third outlet member 30B are each made of a member that is elastically deformable in at least a portion. The third introduction member 30A and the third outlet member 30B extend along the second pivot axis Z2. The third introduction member 30A and the third outlet member 30B penetrate the radiator frame 26 behind the fuel cooler 23.

[0060] The third inlet member 30A and the third outlet member 30B are positioned on the side of the fuel cooler 23 where the second pivot axis Z2 is located. The third inlet member 30A is connected to the upper part of the rear edge of the fuel cooler 23. The third outlet member 30B is connected to the lower part of the rear edge of the fuel cooler 23.

[0061] The connection portion of the second inlet member 29A to the oil cooler 22 is located above and in front of the connection portion of the third inlet member 30A to the fuel cooler 23. Furthermore, the connection portion of the second outlet member 29B to the oil cooler 22 is located below and in front of the connection portion of the third outlet member 30B to the fuel cooler 23.

[0062] The receiver 24 is connected to the first outlet member 28B and the liquid outlet member 37. The receiver 24 receives the refrigerant cooled by the condenser 21 from the first outlet member 28B. At this time, the refrigerant contains a mixture of gas and liquid. Therefore, the receiver 24 separates the gas and liquid in the refrigerant. The liquid outlet member 37 penetrates the radiator frame 26 behind the condenser 21 and is connected to a known expansion valve (not shown), a known evaporator (not shown), etc. The receiver 24 then sends the liquid refrigerant to the liquid outlet member 37 and supplies it to the expansion valve, evaporator, etc.

[0063] [Support structure for cooling system unit] As shown in Figures 3 to 8, the radiator frame 26 is equipped with a frame-shaped frame body.

[0064] The first bracket 31 is supported on the radiator frame 26 via a pair of front and rear first hinges 34 so as to be able to swing around the first pivot axis Z1. The condenser 21 is configured to swing open and closed between a closed position (the "first closed position" as described in the claims) in which the condenser 21 is in its operating position and an open position (the "first open position" as described in the claims) in which the condenser 21 is opened outward in the left-right direction of the machine than the closed position, around the first pivot axis Z1.

[0065] The receiver 24 is supported at the front of the first bracket 31. Therefore, the capacitor 21 and the receiver 24 are configured to swing integrally around the first pivot axis Z1.

[0066] As shown in Figures 3, 5, and 6, the free end of the first bracket 31 is detachably fixed to the radiator frame 26 by a bolt 31b. That is, the first bracket 31 is fixed by a detachable bolt 31b when it is in the closed position. The free end of the first bracket 31 is provided with a pair of front and rear fixing parts 31c. The pair of front and rear fixing parts 31c are fixed to the radiator frame 26 by bolts 31b.

[0067] The front and rear first hinges 34 support the condenser 21 and receiver 24 via the first bracket 31 so that they can pivot around the first pivot axis Z1. As shown in Figures 3 to 7, the front and rear beam sections 26B are provided on the upper part of the radiator frame 26. The front and rear beam sections 26B protrude outward to the side of the aircraft and extend along the front-rear direction of the aircraft. The first hinges 34 are bolted to the front and rear beam sections 26B.

[0068] As shown in Figures 3 to 8, the second bracket 32 ​​is supported at the rear of the radiator frame 26 via upper and lower second hinges 35 so as to be able to swing around a second pivot axis Z2 that extends in the vertical direction. The oil cooler 22 is configured to swing open and closed between a closed position (the "second closed position" in the claims) where the oil cooler 22 is in its operating position and an open position (the "second open position" in the claims) where the oil cooler 22 is in a position that is open outward in the left-right direction of the aircraft than the closed position. The fuel cooler 23 is also configured to swing open and closed between a closed position (the "third closed position" in the claims) where the fuel cooler 23 is in its operating position and an open position (the "third open position" in the claims) where the fuel cooler 23 is in a position that is open outward in the left-right direction of the aircraft than the closed position. At this time, the oil cooler 22 and the fuel cooler 23 are configured to swing integrally around the second oscillation axis Z2.

[0069] The oil cooler 22 is detachably fixed to the radiator frame 26 by bolts 22a. Upper and lower fixing parts 22b are provided on the front edge of the oil cooler 22. The upper and lower fixing parts 22b are fixed to the radiator frame 26 by bolts 22a. Upper and lower fixing parts 22c are provided on the rear edge of the oil cooler 22. The upper and lower fixing parts 22c are fixed to the third bracket 33 by bolts 33b.

[0070] The fuel cooler 23 is detachably fixed to the second bracket 32 ​​by bolts 32b. Upper and lower fixing parts 23a are provided on the rear edge of the fuel cooler 23. The upper and lower fixing parts 23a are fixed to the second bracket 32 ​​by bolts 32b. The fuel cooler 23 is detachably fixed to the third bracket 33 by bolts 33a. Upper and lower fixing parts 23b are provided on the front edge of the fuel cooler 23. The upper and lower fixing parts 23b are fixed to the third bracket 33 by bolts 33a.

[0071] The oil cooler 22 and the fuel cooler 23 are connected front to back via a third bracket 33. The oil cooler 22, fuel cooler 23, second bracket 32, and third bracket 33 are fixed together by removable bolts 22a when in the closed position.

[0072] The upper and lower second hinges 35 support the oil cooler 22 and fuel cooler 23 via the second bracket 32 ​​so that they can pivot around the second pivot axis Z2. The second hinges 35 are bolted to the rear of the radiator frame 26. The second inlet member 29A and the second outlet member 29B extend relative to the oil cooler 22 on the side where the second hinges 35 are located. The third introduction member 30A and the third outlet member 30B extend along the second pivot axis Z2 on the side of the fuel cooler 23 where the second hinge 35 is located.

[0073] The first oscillation axis Z1 is located adjacent to the front and rear beam sections 26B at the top of the radiator frame 26. The first oscillation axis Z1 is positioned outward in the lateral direction of the aircraft relative to the oil cooler 22 and fuel cooler 23. That is, the first oscillation axis Z1 is positioned outward in the lateral direction of the aircraft beyond the right end of the oil cooler 22 and fuel cooler 23. Specifically, the first oscillation axis Z1 is positioned within a range W that spans the lateral outer end of the condenser 21 and the lateral inner ends of the oil cooler 22 and fuel cooler 23 in the lateral direction of the aircraft.

[0074] The second oscillation axis Z2 is located adjacent to the rear of the radiator frame 26. The second oscillation axis Z2 is located outward in the lateral direction of the aircraft relative to the oil cooler 22 and the fuel cooler 23. That is, the second oscillation axis Z2 is located outward in the lateral direction of the aircraft beyond the left end of the oil cooler 22 and the fuel cooler 23. Specifically, the second oscillation axis Z2 is located within a range W that spans the lateral outer end of the condenser 21 and the lateral inner ends of the oil cooler 22 and the fuel cooler 23 in the lateral direction of the aircraft.

[0075] [Method for opening and closing the condenser, oil cooler, and fuel cooler] Next, the methods for opening and closing the condenser 21, oil cooler 22, and fuel cooler 23 will be explained based on Figures 6 to 8.

[0076] The dust cover 17 is positioned on the outside of the machine in the left-right direction relative to the condenser 21, oil cooler 22, and fuel cooler 23. First, as shown in Figure 6, the worker opens the dust cover 17. The first bracket 31 is fixed to the radiator frame 26 by bolts 31b. The worker removes the bolts 31b from the radiator frame 26. This releases the condenser 21 and receiver 24 from their closed positions.

[0077] As shown in Figure 7, the capacitor 21, receiver 24, and first bracket 31 are repositioned to the open position by the operator swinging upward around the first pivot axis Z1. In other words, the capacitor 21 and receiver 24 are configured to be repositioned to the open position by swinging upward around the first pivot axis Z1.

[0078] When the capacitor 21 and receiver 24 are repositioned to the open position, the first introduction member 28A undergoes elastic deformation. At this time, the portion of the first introduction member 28A that is bent in front of the radiator 20 is displaced laterally outward from the aircraft body. The first introduction member 28A is connected to the capacitor 21 near the first pivot axis Z1. Therefore, when the capacitor 21 is repositioned from the closed position to the open position, the amount of displacement of the first introduction member 28A is suppressed.

[0079] Furthermore, the liquid outlet member 37 extends along the first oscillation axis Z1 below the first oscillation axis Z1. Therefore, when the capacitor 21 and receiver 24 are repositioned to the open position, the liquid outlet member 37 twists mainly in the circumferential direction. This reduces the risk of the liquid outlet member 37 being significantly displaced or twisted.

[0080] As shown in Figures 3 and 7, a support rod 36 is provided in front of the capacitor 21 and on the inside of the side of the machine body. The support rod 36 corresponds to the "holding device" described in the claims. As shown in Figure 7, the support rod 36 is configured to hold the capacitor 21 and receiver 24 in the open position. With the capacitor 21 and receiver 24 in the open position, the operator hooks the support rod 36 onto the first bracket 31. In this state, the capacitor 21, receiver 24, and first bracket 31 are supported by the support rod 36. As a result, the capacitor 21, receiver 24, and first bracket 31 will not swing to the closed position due to their own weight.

[0081] The oil cooler 22 is fixed to the radiator frame 26 by bolts 22a (see Figures 3 and 4). Workers remove the bolts 22a from the radiator frame 26. This releases the oil cooler 22 and fuel cooler 23 from their closed positions.

[0082] As shown in Figure 8, the oil cooler 22, fuel cooler 23, second bracket 32, and third bracket 33 are repositioned to the open position by an operator swinging them backward around the second pivot axis Z2. In other words, the oil cooler 22 and fuel cooler 23 are configured to be repositioned to the open position by swinging backward around the second pivot axis Z2.

[0083] When the oil cooler 22 and fuel cooler 23 are repositioned to the open position, the second inlet member 29A, the second outlet member 29B, the third inlet member 30A, and the third outlet member 30B undergo elastic deformation. At this time, the portion of the second inlet member 29A and the second outlet member 29B that is bent behind the radiator 20 is displaced laterally inward of the aircraft. The second inlet member 29A and the second outlet member 29B are connected to the oil cooler 22 near the second pivot axis Z2. Therefore, when the oil cooler 22 is repositioned from the closed position to the open position, the amount of displacement of the second inlet member 29A and the second outlet member 29B is suppressed.

[0084] Furthermore, the portion of the third inlet member 30A and the third outlet member 30B facing the connection port of the fuel cooler 23 extends horizontally. The portion of the third inlet member 30A and the third outlet member 30B that is away from the connection port of the fuel cooler 23 is curved and oriented vertically. The third inlet member 30A and the third outlet member 30B extend along the second pivot axis Z2 in front of the second pivot axis Z2. Therefore, when the fuel cooler 23 is moved to the open position, the third inlet member 30A and the third outlet member 30B twist mainly in the circumferential direction. This reduces the risk of the third inlet member 30A and the third outlet member 30B being significantly displaced or twisted.

[0085] In this way, the condenser 21 and receiver 24 can be moved from the closed position to the open position with the dust cover 17 open. Also, the oil cooler 22 and fuel cooler 23 can be moved from the closed position to the open position with the condenser 21 and receiver 24 in the open position. At this time, the oil cooler 22 and fuel cooler 23 are configured to swing open and closed in a different direction from the condenser 21 and receiver 24.

[0086] Furthermore, by performing the reverse procedure described above, the condenser 21, oil cooler 22, and fuel cooler 23 are repositioned to the closed position. Specifically, the workers reposition the oil cooler 22 and fuel cooler 23 to the closed position and secure them to the radiator frame 26 with bolts 22a. Next, the workers release the support rod 36 and reposition the condenser 21 and receiver 24 to the closed position, securing them to the radiator frame 26 with bolts 31b.

[0087] The condenser 21 is made to be at least lighter than the oil cooler 22. Therefore, compared to a configuration in which the oil cooler 22 swings up and down, workers will feel less burden when swinging the condenser 21 upwards to change its position from the closed position to the open position. Furthermore, the condenser 21 may be made to be lighter than the fuel cooler 23.

[0088] [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.

[0089] (1) The capacitor 21 described above corresponds to the "first cooling device" as described in the claims. The embodiment is not limited to this, and for example, the first cooling device may be an oil cooler 22 or a fuel cooler 23. In this case, the first cooling device does not have to be lighter than the second cooling device.

[0090] (2) The oil cooler 22 described above corresponds to the "second cooling device" described in the claims, and the fuel cooler 23 described above corresponds to the "third cooling device" described in the claims. The embodiment is not limited to this, and the oil cooler 22 may correspond to the "third cooling device" described in the claims, and the fuel cooler 23 may correspond to the "second cooling device" described in the claims.

[0091] (3) The second oscillation axis Z2 described above may be located on the front side of the aircraft relative to the oil cooler 22. In other words, the second oscillation axis Z2 may be located on either the front or rear side of the aircraft relative to the second cooling system.

[0092] (4) In the above-described embodiment, the capacitor 21 and the receiver 24 are supported by the first bracket 31. The embodiment is not limited to this one, and there may be a configuration in which only the capacitor 21 is supported by the first bracket 31 and the receiver 24 is not supported by the first bracket 31. In this case, the capacitor 21 and the receiver 24 may not be configured to swing integrally around the first pivot axis Z1. Also in this case, the first lead member 28B may be made of a flexible tubular member instead of a metal tubular member. Furthermore, the first lead member 28B may be connected to the part (upper part) of the capacitor 21 on the side where the first pivot axis Z1 is located. In other words, at least one of the first introduction member 28A and the first lead member 28B may be connected to the part of the capacitor 21 on the side where the first pivot axis Z1 is located. Moreover, the first lead member 28B may extend along the first pivot axis Z1. In other words, at least one of the first introduction member 28A and the first lead member 28B may extend along the first pivot axis Z1.

[0093] (5) In the above-described embodiment, the oil cooler 22 and the fuel cooler 23 are configured to oscillate integrally around the second oscillation axis Z2. The embodiment is not limited to this one, and the fuel cooler 23 may be configured to oscillate independently of the oil cooler 22. In this case, the oil cooler 22 and the fuel cooler 23 may oscillate around a common second oscillation axis Z2, or they may oscillate around different axes. Furthermore, the oscillation angles between the closed position (second closed position) and the open position (second open position) of the oil cooler 22 and the oscillation angles between the closed position (third closed position) and the open position (third open position) of the fuel cooler 23 may be different.

[0094] (6) The second introduction member 29A and the second outlet member 29B described above extend horizontally from the rear of the radiator 20 to the connection port to the oil cooler 22. Not limited to this embodiment, the second introduction member 29A and the second outlet member 29B may each have at least a portion extending along the second pivot axis Z2. In other words, at least one of the second introduction member 29A and the second outlet member 29B may be configured to extend along the second pivot axis Z2.

[0095] (7) The third introduction member 30A and the third exit member 30B described above partially extend along the second pivot axis Z2. The embodiment is not limited to this one, and the third introduction member 30A and the third exit member 30B may be configured not to extend along the second pivot axis Z2. In other words, at least one of the second introduction member 29A, the second exit member 29B, the third introduction member 30A, and the third exit member 30B may be configured to extend along the second pivot axis Z2.

[0096] (8) The pivot axis Z3 described above is provided at the lower part of the dust cover 17, and the dust cover 17 is configured to pivot and open and close around the pivot axis Z3 which extends along the front-rear direction of the aircraft. The embodiment is not limited to this, and the pivot axis Z3 may be an up-and-down axis provided at the front or rear of the dust cover 17.

[0097] (9) The tension rod 36 described above corresponds to the "holding device" described in the claims. The embodiment is not limited to this one, and for example, the holding device may be a dead-point mechanism having a biasing member such as a coil spring, which holds the capacitor 21 in the closed position (first closed position) and the open position (first open position) with a dead point between the closed position (first closed position) and the open position (first open position) of the capacitor 21.

[0098] 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. Furthermore, 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]

[0099] The present invention is applicable to harvesting machines. Therefore, it is not limited to the self-propelled combine harvester exemplified in the above embodiments, but is applicable to general-purpose combine harvesters and various harvesting machines (for example, corn harvesters, sugarcane harvesters, potato harvesters, beet harvesters, carrot harvesters, etc.). [Explanation of Symbols]

[0100] 17: Dust cover 20: Radiator 21: Capacitor (First Cooling Device) 22: Oil cooler (second cooling system) 23: Fuel cooler (third cooling system) 24: Receiver 28A: First introduction member 28B: First lead member 29A: Second introduction member 29B: Second lead-out member 30A: Third introduction member 30B:Third lead-out member 36: Tension rod (holding device) E: Engine Z1: First swing axis Z2: Second swing axis Z3: Oscillating axis

Claims

1. A water-cooled engine, A radiator is positioned on the outside of the aircraft in the left-right direction relative to the engine, and cools the cooling water for the engine. A first cooling device is positioned on the outside of the aircraft in the left-right direction relative to the radiator, A second cooling device is positioned on the outside of the aircraft in the left-right direction relative to the radiator, The first cooling device is provided with a holder capable of holding it in the open position, The first cooling device is configured to swing open and closed around a first pivot axis, between a first closed position, which is the orientation when the first cooling device is in use, and a first open position, which is the orientation when the first cooling device is opened further outward in the left-right direction of the machine than the first closed position. The second cooling device is configured to swing open and closed around the second pivot axis, between a second closed position, which is the orientation when the second cooling device is in use, and a second open position, which is the orientation when the second cooling device is open to the left and right of the aircraft body more than the second closed position. The first pivot axis is an axis that extends along the longitudinal direction of the aircraft body and is located above the first cooling device. The holder is configured to hold the first cooling device, which is opened to the first open position, in the first open position in the harvesting machine.

2. The harvesting machine according to claim 1, wherein the second pivot axis is an axis extending in the vertical direction and is located on one side of the machine body relative to the second cooling device.

3. The harvesting machine according to claim 2, wherein the second oscillating axis is located on the rear side of the machine body relative to the second cooling device.

4. The first cooling device is a condenser for cooling the refrigerant for an air conditioner, A receiver for the aforementioned capacitor is provided, The harvesting machine according to claim 1, wherein the capacitor and the receiver are configured to swing integrally around the first pivot axis.

5. The first cooling device is a condenser for cooling the refrigerant for an air conditioner, The capacitor is connected to a tubular first introduction member for introducing the refrigerant into the capacitor and a first discharge member for discharging the refrigerant from the capacitor. The harvesting machine according to claim 1, wherein at least one of the first introduction member and the first output member is connected to the portion of the capacitor on the side where the first pivot axis is located.

6. The harvesting machine according to claim 5, wherein at least one of the first introduction member and the first output member extends along the first pivot axis.

7. A third cooling device is provided, positioned on the outside of the aircraft in the left-right direction relative to the aforementioned radiator. The third cooling device is configured to swing open and closed around the second pivot axis, between a third closed position, which is the orientation when the third cooling device is in use, and a third open position, which is the orientation when the third cooling device is opened further outward in the left-right direction of the machine than the third closed position. The harvesting machine according to any one of claims 1 to 6, wherein the second cooling device and the third cooling device are configured to swing integrally around the second pivot axis.

8. The second cooling device is connected to a tubular second introduction member for introducing the object to be cooled into the second cooling device, and a second exit member for exiting the object to be cooled from the second cooling device. The third cooling device is connected to a tubular third introduction member for introducing the object to be cooled into the third cooling device, and a third exit member for exiting the object to be cooled from the third cooling device. The second introduction member and the second outlet member are arranged on the side of the second cooling device where the second pivot axis is located. The harvesting machine according to claim 7, wherein the third introduction member and the third output member are arranged on the side of the third cooling device where the second oscillating axis is located.

9. The harvesting machine according to claim 8, wherein the second introduction member, the second output member, the third introduction member, and the third output member are each composed of a material that is elastically deformable in at least a portion thereof.

10. The harvesting machine according to claim 8, wherein at least one of the second introduction member, the second output member, the third introduction member, and the third output member extends along the second pivot axis.

11. The second cooling device is an oil cooler for cooling hydraulic fluid, The harvesting machine according to claim 7, wherein the third cooling device is a fuel cooler for cooling the fuel supplied to the engine.

12. The harvesting machine according to any one of claims 1 to 6, wherein the first cooling device is configured to be lighter than the second cooling device.

13. The first cooling device and the second cooling device are provided with dust covers positioned on the outside of the aircraft in the left-right direction. The harvesting machine according to any one of claims 1 to 6, wherein the dust cover is provided at the lower part of the dust cover and is configured to swing open and closed about a pivot axis extending along the front-rear direction of the machine body.

14. The first cooling device is positioned on the outside of the aircraft in the left-right direction relative to the second cooling device. The first cooling device can be moved from the first closed position to the first open position with the dust cover open. The harvesting machine according to claim 13, wherein the second cooling device can be moved from the second closed position to the second open position while the first cooling device is in the first open position.

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