Harvester

Abstract

To provide a harvester capable of performing maintenance of a radiator easily.SOLUTION: A harvester includes: a cooling device (21,22,23) disposed outside in a machine body right-left direction with respect to a cooling fan; a tubular introduction member (29A,31A,33A) connected to the cooling device (21,22,23) for introducing a cooling object to the cooling device (21,22,23); and a tubular derivation member (29B,31B,33B) connected to the cooling device for deriving the cooling object from the cooling device. The cooling device (21,22,23) is configured so as to swingably open and close over a closed position which is in a posture when in use and an open position which is in a posture opened outside in the machine body right-left direction around a swinging shaft center. A connection spot of the cooling device (21,22,23) and the introduction member (29A,31A,33A), and a connection spot of the cooling device (21,22,23) and the derivation member (29B,31B,33B) are positioned on a swinging shaft center side in the cooling device (21,22,23).SELECTED DRAWING: Figure 3

Description

[Technical Field]

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

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

[16] " in the document), a radiator (referred to as "radiator

[17] " in the document) that is arranged on the outside of the engine in the left-right direction of the vehicle body and that cools the engine cooling water, a cooling fan (referred to as "cooling fan

[18] " in the document) that is arranged between the engine and the radiator in the left-right direction of the vehicle body and that supplies cooling air to the radiator, a first cooling device (referred to as "oil cooler

[60] " in the document) that is arranged on the outside of the radiator in the left-right direction of the vehicle body, and a second cooling device (referred to as "intercooler

[80] " in the document) that is arranged on the outside of the radiator in the left-right direction of the vehicle body. [Prior art documents] [Patent documents]

[0003] [Patent Document 1] Patent Publication No. 2021-65150 Summary of the Invention [Problem to be solved by the invention]

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

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

[0006] A feature of the present invention is a harvester comprising: a water-cooled engine; a radiator arranged outside the engine in the left-right direction of the machine body and cooling the cooling water for the engine; a cooling fan arranged between the engine and the radiator in the left-right direction of the machine body and supplying cooling air to the radiator; a first cooling device arranged outside the radiator in the left-right direction of the machine body; and a second cooling device arranged outside the radiator in the left-right direction of the machine body, wherein the harvester comprises a first support frame supporting the first cooling device and a second support frame supporting the second cooling device, wherein the first support frame is configured to be able to swing open and close about a first swing axis between a first closed position in which the first cooling device is in an orientation when in use and a first open position in which the first cooling device is open outward in the left-right direction of the machine body, and the second support frame is configured to be able to swing open and close about a second swing axis between a second closed position in which the second cooling device is in an orientation when in use and a second open position in which the second cooling device is open outward in the left-right direction of the machine body.

[0007] According to this characteristic configuration, when the first support frame is swung about the first swing axis to change its position to the first open position and the second support frame is swung about the second swing axis to change its position to the second open position, the outer side surface (lateral outer surface) of the radiator in the left-right direction of the machine body is opened. This allows easy access to the lateral outer surface of the radiator from the outside in the left-right direction of the machine body when performing maintenance on the radiator. In other words, a harvester that allows easy maintenance on the radiator can be realized.

[0008] In addition, the rear surfaces of the first cooling device and the second cooling device are also opened. This allows for easy maintenance of the first cooling device and the second cooling device.

[0009] Furthermore, in the present invention, it is preferable that the first cooling device and the second cooling device are arranged so that the second cooling device is located outside the first cooling device in the left-right direction of the aircraft and overlap each other in a side view, and that the first support frame can be repositioned to the first open position by repositioning the second support frame to the second open position.

[0010] This feature allows the first and second cooling devices to be arranged in a compact manner. By changing the position of the second support frame to the second open position, the first support frame can be changed to the first open position without the second cooling device interfering with the first cooling device.

[0011] Furthermore, in the present invention, it is preferable that the second support frame be configured to be positioned at the second closed position by contacting the first support frame.

[0012] According to this characteristic configuration, the second support frame can be reliably positioned in the second closed position by abutting the first support frame. In this case, by using the first support frame, the structure for positioning the second support frame in the second closed position can be configured simply.

[0013] Furthermore, in the present invention, it is preferable that the first oscillation axis and the second oscillation axis are axes extending along the up-down direction.

[0014] According to this characteristic configuration, the first support frame and the second support frame each swing open and closed horizontally. Therefore, there is no need to lift the first support frame and the second support frame when swinging them open and closed. This allows the first support frame and the second support frame to swing open and closed with little force.

[0015] Furthermore, in the present invention, it is preferable that the first swing axis and the second swing axis are disposed at different positions in the longitudinal direction of the aircraft body.

[0016] According to this characteristic configuration, the structure for supporting the first support frame so that it can be swingably opened and closed and the structure for supporting the second support frame so that it can be swingably opened and closed can be configured without interfering with each other.

[0017] Furthermore, in the present invention, it is preferable that a tubular first introduction member that introduces the object to be cooled into the first cooling device and a tubular first outlet member that outlets the object to be cooled from the first cooling device are connected to the first cooling device, the first oscillation axis is an axis extending along the vertical direction, a first support part that supports the first cooling device so that it can oscillate around the first oscillation axis is provided, and the first introduction member and the first outlet member extend along the first oscillation axis on the side of the first cooling device where the first support part is located.

[0018] According to this characteristic configuration, the first introduction member and the first outlet member are located on the same side (the side where the first support portion is located) of the first cooling device. This makes it possible to easily group the first introduction member and the first outlet member together. Furthermore, because the first introduction member and the first outlet member extend along the first swing axis, the first introduction member and the first outlet member are less likely to twist when the first support frame is swung open or closed.

[0019] Furthermore, in the present invention, it is preferable that a tubular second introduction member that introduces the object to be cooled into the second cooling device and a tubular second outlet member that outlets the object to be cooled from the second cooling device are connected to the second cooling device, the second oscillation axis is an axis extending along the vertical direction, a second support part that supports the second cooling device so that it can oscillate around the second oscillation axis is provided, and the second introduction member and the second outlet member extend along the second oscillation axis on the side of the second cooling device where the second support part is located.

[0020] According to this characteristic configuration, the second introduction member and the second outlet member are located on the same side (the side where the second support portion is located) of the second cooling device. This makes it possible to easily group the second introduction member and the second outlet member together. Furthermore, because the second introduction member and the second outlet member extend along the second swing axis, the second introduction member and the second outlet member are less likely to twist when the second support frame is swung open or closed.

[0021] Furthermore, in the present invention, it is preferable that the first support frame is fixed by a removable first fixing device when positioned in the first closed position, and that the first fixing device is attached to a first retaining portion that holds the first support frame in the first open position.

[0022] According to this characteristic configuration, the first fixing device is attached to the first holding portion, so that the first support frame can be reliably held in the first open position.

[0023] Here, with the first fixing device attached to the first holding part, the first support frame cannot be repositioned to the first closed position, and in order to reposition the first support frame to the first closed position, the first fixing device needs to be removed from the first holding part. This makes it possible to make the worker aware that after removing the first fixing device from the first holding part to reposition the first support frame to the first closed position, the first support frame should be fixed to the first closed position with the first fixing device.

[0024] Furthermore, in the present invention, it is preferable that the second support frame is fixed by a removable second fixing device when positioned in the second closed position, and that the second fixing device is attached to a second holding portion that holds the second support frame in the second open position.

[0025] According to this characteristic configuration, the second fixing device is attached to the second holding portion, so that the second support frame can be reliably held in the second open position.

[0026] Here, with the second fixing device attached to the second holding part, the second support frame cannot be repositioned to the second closed position, and in order to reposition the second support frame to the second closed position, the second fixing device needs to be removed from the second holding part. This makes it possible to make the worker aware that after removing the second fixing device from the second holding part to reposition the second support frame to the second closed position, the second support frame should be fixed to the second closed position with the second fixing device.

[0027] Furthermore, in the present invention, it is preferable that the vehicle further comprises a third cooling device arranged outside the radiator in the left-right direction of the aircraft, and a third support frame supporting the third cooling device, and that the third support frame is configured to be able to swing open and closed around a third swing axis between a third closed position in which the third cooling device is in an orientation when in use, and a third open position in which the third cooling device is open outward in the left-right direction of the aircraft.

[0028] According to this characteristic configuration, when the third support frame is swung about the third swing axis to change its position to the third open position, the outer side surface (lateral outer surface) of the radiator in the left-right direction of the aircraft is opened, which allows easy access to the lateral outer surface of the radiator from outside in the left-right direction of the aircraft when performing maintenance on the radiator.

[0029] In addition, the rear surface of the third cooling device is also open, which makes it easier to perform maintenance on the third cooling device.

[0030] Furthermore, in the present invention, it is preferable that the first cooling device, the second cooling device, and the third cooling device are arranged in this order toward the outside in the left-right direction of the aircraft, the first support frame and the second support frame are configured to swing in different directions to open and close, and the third support frame is configured to swing in a direction different from that of the second support frame to open and close.

[0031] According to this characteristic configuration, the first support frame, the second support frame, and the third support frame that are adjacent in the left-right direction of the machine body swing in different directions to open and close, thereby preventing the first support frame, the second support frame, and the third support frame from interfering with each other when swinging open and closed.

[0032] Furthermore, in the present invention, it is preferable that the first oscillation axis, the second oscillation axis, and the third oscillation axis are axes extending along the up-down direction.

[0033] According to this characteristic configuration, the first support frame, the second support frame, and the third support frame each swing open and closed horizontally. Therefore, when swinging open and closed, there is no need to lift the first support frame, the second support frame, and the third support frame. This allows the first support frame, the second support frame, and the third support frame to swing open and closed with little force.

[0034] Furthermore, in the present invention, it is preferable that the first support frame is configured to swing forward about the first swing axis to be repositioned to the first open position, the second support frame is configured to swing rearward about the second swing axis to be repositioned to the second open position, and the third support frame is configured to swing forward about the third swing axis to be repositioned to the third open position.

[0035] According to this characteristic configuration, the first support frame, the second support frame, and the third support frame that are adjacent in the left-right direction of the machine body swing in different directions to open and close, thereby preventing the first support frame, the second support frame, and the third support frame from interfering with each other when swinging open and closed.

[0036] Furthermore, in the present invention, it is preferable that the first support frame is configured to swing rearward about the first swing axis to be repositioned to the first open position, the second support frame is configured to swing forward about the second swing axis to be repositioned to the second open position, and the third support frame is configured to swing rearward about the third swing axis to be repositioned to the third open position.

[0037] According to this characteristic configuration, the first support frame, the second support frame, and the third support frame that are adjacent in the left-right direction of the machine body swing in different directions to open and close, thereby preventing the first support frame, the second support frame, and the third support frame from interfering with each other when swinging open and closed.

[0038] Furthermore, in the present invention, it is preferable that the second support frame is configured to be positioned in the second closed position when it contacts the first support frame, and the third support frame is configured to be positioned in the third closed position when it contacts the second support frame.

[0039] According to this characteristic configuration, the second support frame can be reliably positioned in the second closed position by abutting the first support frame. In this case, by using the first support frame, the structure for positioning the second support frame in the second closed position can be configured simply.

[0040] Furthermore, the third support frame abuts against the second support frame, thereby reliably positioning the third support frame in the third closed position. In this case, by using the second support frame, the structure for positioning the third support frame in the third closed position can be configured simply.

[0041] Furthermore, in the present invention, it is preferable that the second cooling device and the third cooling device are arranged outside the first cooling device in the left-right direction of the machine body, and either the second support frame or the third support frame and the first support frame are configured to swing open and close around a common swing axis extending in the up-down direction, and that the swing axis is arranged outside the first cooling device in the left-right direction of the machine body.

[0042] According to this characteristic configuration, a space is created between the first cooling device and the swing axis in the left-right direction of the machine body, and by inserting the second cooling device or the third cooling device into this space, the first cooling device, the second cooling device, and the third cooling device can be arranged compactly.

[0043] Furthermore, in the present invention, it is preferable that a tubular third introduction member that introduces the object to be cooled into the third cooling device and a tubular third outlet member that outlets the object to be cooled from the third cooling device are connected to the third cooling device, the third oscillation axis is an axis extending along the vertical direction, a third support part that supports the third cooling device so that it can oscillate around the third oscillation axis is provided, and the third introduction member and the third outlet member extend along the third oscillation axis on the side of the third cooling device where the third support part is located.

[0044] According to this characteristic configuration, the third introduction member and the third outlet member are located on the same side (the side where the third support portion is located) of the third cooling device. This makes it possible to easily group the third introduction member and the third outlet member together. Furthermore, because the third introduction member and the third outlet member extend along the third swing axis, the third introduction member and the third outlet member are less likely to twist when the third support frame is swung open or closed.

[0045] Furthermore, in the present invention, it is preferable that the third support frame is fixed by a removable third fixing device when positioned in the third closed position, and that the third fixing device is attached to a third retaining portion that holds the third support frame in the third open position.

[0046] According to this characteristic configuration, the third fixing device is attached to the third holding portion, so that the third support frame can be reliably held in the third open position.

[0047] Here, with the third fixing device attached to the third holding part, the third support frame cannot be repositioned to the third closed position, and in order to reposition the third support frame to the third closed position, the third fixing device needs to be removed from the third holding part. This makes it possible to make the worker aware that after removing the third fixing device from the third holding part to reposition the third support frame to the third closed position, the third support frame should be fixed to the third closed position with the third fixing device. [Brief explanation of the drawings]

[0048] [Figure 1] FIG. 2 is a right side view showing the combine harvester. [Figure 2] FIG. [Figure 3] FIG. 4 is a right side view showing the inside of the engine compartment and the air cleaner compartment with the dustproof cover open. [Figure 4] FIG. [Figure 5] FIG. 2 is a right side view showing the cooling system unit. [Figure 6] FIG. 10 is a right side view showing a state in which the first oil cooler is supported by the first support frame. [Figure 7] FIG. 10 is a right side view showing a state in which the condenser and the fuel cooler are supported by the second support frame. [Figure 8] FIG. 10 is a right side view showing a state in which the second oil cooler is supported by the third support frame. [Figure 9] FIG. 10 is a plan view showing a state in which the third support frame has been changed to an open position. [Figure 10] 10 is a plan view showing a state in which the second support frame and the third support frame are changed to an open position. FIG. [Figure 11]10 is a plan view showing a state in which the first support frame, the second support frame, and the third support frame are changed to an open position. FIG. DETAILED DESCRIPTION OF THE INVENTION

[0049] An embodiment of the present invention will be described with reference to the drawings. In the following description, the direction of arrow F is the "front side of the aircraft body," the direction of arrow B is the "rear side of the aircraft body," the direction of arrow L is the "left side of the aircraft body," and the direction of arrow R is the "right side of the aircraft body."

[0050] [Overall configuration of the combine] 1 and 2 show a head-feeding combine (corresponding to the "harvester" of the present invention). This combine includes a traveling body 1, a reaping unit 2, a threshing device 3, a grain storage tank 4, a grain discharge device 5, a driver's cabin 6, a motor unit 7, and a transmission unit 8.

[0051] The traveling machine body 1 is equipped with 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. A fuel tank (not shown) is provided at the rear of the machine body frame 10. The reaping unit 2 is disposed in front of the traveling machine body 1. The reaping unit 2 is configured to reap planted stalks.

[0052] The threshing device 3 is configured to thresh the harvested stalks. The grain storage tank 4 is arranged next to the threshing device 3 (in this embodiment, next to it on the right). The grain storage tank 4 is configured to store grains. The grain discharge device 5 is configured to discharge the grains in the grain storage tank 4.

[0053] The driver's cabin 6 is positioned offset to one of the left and right sides (in this embodiment, the right side) of the traveling vehicle 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 comprises a driver's seat 13. An air conditioning unit (not shown) that conditions the air inside the driver's cabin 6 is provided. The air conditioning unit is housed, for example, in the roof section of the cabin section 12.

[0054] An engine room 14 is formed below the driver's seat 13. The engine room 14 houses the driving unit 7. An air cleaner room 15 is formed behind the driver's seat 13. The air cleaner room 15 houses an air cleaner 16 for the engine E.

[0055] A dustproof cover 17 is provided to cover the engine room 14 and the air cleaner room 15 from the outside in the left-right direction of the vehicle body (the right side in this embodiment; the same applies below). The dustproof 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 vehicle body while allowing ventilation and preventing the passage of dust. The dustproof cover 17 is configured to be swingable open and closed about a swing axis Z1 that extends in the up-down direction.

[0056] The motor section 7 includes 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 is configured to purify the exhaust gas from the engine E using a DPF (Diesel Particulate Filter). The cooling system unit U is disposed outside the engine E in the left-right direction of the aircraft. The cooling system unit U includes a radiator 20, a first oil cooler 21 (corresponding to the "first cooling device" according to the present invention), a condenser 22 (corresponding to the "second cooling device" according to the present invention), a second oil cooler 23 (corresponding to the "third cooling device" according to the present invention), and a fuel cooler 24.

[0057] The cooling fan 19 is disposed between the engine E and the radiator 20 in the left-right direction of the aircraft body. 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 air outside the aircraft flows into the engine compartment 14 through the dustproof cover 17, and a reverse rotation state in which air inside the engine compartment 14 flows out of the aircraft through the dustproof cover 17.

[0058] The transmission unit 8 is disposed between the front of the left crawler traveling device 9 and the front of the right crawler traveling device 9. The transmission unit 8 is configured to change the speed of power from the engine E and transmit it to the left and right crawler traveling devices 9 and the reaping unit 2. The transmission unit 8 is equipped with an HST (Hydro Static Transmission, a hydrostatic continuously variable transmission) as a main transmission, a gear-type transmission mechanism as an auxiliary transmission, and a transmission case that houses the gear-type transmission mechanism. The reaping unit 2 is configured to receive power after being shifted by the HST. The left and right crawler traveling devices 9 are configured to receive power after being shifted by the HST and the gear-type transmission mechanism.

[0059] [Cooling system unit] As shown in Figures 3 to 5, the radiator 20 is configured to cool the coolant for the engine E. The radiator 20 is disposed outside the engine E in the left-right direction of the aircraft. A shroud 25 that covers the cooling fan 19 is supported on the left side of the radiator 20. The radiator 20 is supported by a radiator frame 26. A radiator duct 27 that serves as a passage for the air circulated by the cooling fan 19 is supported on the right side of the radiator frame 26.

[0060] The first oil cooler 21 is configured to cool the oil (hydraulic oil) for the HST. The first oil cooler 21 is arranged outside the radiator 20 in the left-right direction of the aircraft body. Specifically, the first oil cooler 21 is arranged immediately to the right of the radiator 20. The first oil cooler 21 is arranged inside the radiator duct 27. The first oil cooler 21 is supported by a first support frame 28.

[0061] A tubular first introduction member 29A that introduces the hydraulic oil into the first oil cooler 21 and a tubular first outlet member 29B that discharges the hydraulic oil from the first oil cooler 21 are connected to the first oil cooler 21. The first introduction member 29A and the first outlet member 29B are made of flexible tubular members. The first introduction member 29A is connected to a lower part of a front edge portion of the first oil cooler 21. The first outlet member 29B is connected to an upper part of a front edge portion of the first oil cooler 21.

[0062] The condenser 22 is configured to cool the refrigerant for the air conditioning unit. The condenser 22 is disposed outside the radiator 20 in the left-right direction of the vehicle body. Specifically, the condenser 22 is disposed immediately to the right of the first oil cooler 21. The condenser 22 is disposed inside the radiator duct 27. The condenser 22 is supported by the second support frame 30.

[0063] A tubular second introduction member 31A that introduces the refrigerant into the condenser 22 and a tubular second outlet member 31B that discharges the refrigerant from the condenser 22 are connected to the condenser 22. The second introduction member 31A and the second outlet member 31B are made of flexible tubular members. The second introduction member 31A is connected to a lower part of the rear edge of the condenser 22. The second outlet member 31B is connected to an upper part of the rear edge of the condenser 22.

[0064] The second oil cooler 23 is configured to cool oil (lubricating oil) for the transmission case. The second oil cooler 23 is disposed outside the radiator 20 in the left-right direction of the aircraft. Specifically, the second oil cooler 23 is disposed immediately to the right of the condenser 22. The second oil cooler 23 is disposed outside the radiator duct 27. The second oil cooler 23 is supported by the third support frame 32.

[0065] A tubular third introduction member 33A that introduces the lubricating oil into the second oil cooler 23 and a tubular third outlet member 33B that discharges the lubricating oil from the second oil cooler 23 are connected to the second oil cooler 23. The third introduction member 33A and the third outlet member 33B are made of flexible tubular members. The third introduction member 33A is connected to a lower part of a front edge portion of the second oil cooler 23. The third outlet member 33B is connected to an upper part of a front edge portion of the second oil cooler 23.

[0066] The fuel cooler 24 is configured to cool fuel. The fuel cooler 24 is disposed outside the radiator 20 in the left-right direction of the aircraft. Specifically, the fuel cooler 24 is disposed to the right of and below the condenser 22. In other words, the fuel cooler 24 is disposed below the second oil cooler 23 so as to overlap with the second oil cooler 23 in a plan view. The fuel cooler 24 is disposed outside the radiator duct 27. The fuel cooler 24 is supported by the second support frame 30.

[0067] A tubular fourth introduction member 34A that introduces fuel into the fuel cooler 24 and a tubular fourth outlet member 34B that discharges fuel from the fuel cooler 24 are connected to the fuel cooler 24. The fourth introduction member 34A and the fourth outlet member 34B are made of flexible tubular members. The fourth introduction member 34A is connected to the rear portion of the upper edge of the fuel cooler 24. The fourth outlet member 34B is connected to the front portion of the upper edge of the fuel cooler 24.

[0068] The first oil cooler 21, the condenser 22, and the second oil cooler 23 are arranged in this order toward the outside in the left-right direction of the aircraft so as to overlap one another in a side view. The first oil cooler 21 and the condenser 22 are arranged so that the condenser 22 is located outward from the first oil cooler 21 in the left-right direction of the aircraft, and so as to overlap one another in a side view. The condenser 22 and the second oil cooler 23 are arranged so that the second oil cooler 23 is located outward from the condenser 22 in the left-right direction of the aircraft, and so as to overlap one another in a side view. The first oil cooler 21 and the fuel cooler 24 are arranged so that the fuel cooler 24 is located outward from the first oil cooler 21 in the left-right direction of the aircraft, and so as to overlap one another in a side view.

[0069] [Support structure for cooling system unit] 6, the radiator frame 26 includes a frame-shaped main frame body 26A, a front vertical frame 26B, a middle vertical frame 26C, and a rear vertical frame 26D. The front vertical frame 26B, the middle vertical frame 26C, and the rear vertical frame 26D are each provided across the upper and lower portions of the main frame body 26A.

[0070] The first support frame 28 is supported by the radiator frame 26 (front vertical frame 26B) via upper and lower first hinges 28a (corresponding to the "first support portion" according to the present invention) so as to be swingable about an oscillation axis Z2 (corresponding to the "first oscillation axis" and "oscillation axis" according to the present invention) extending along the up-down direction. The first support frame 28 is configured to be swingable open and closed about the oscillation axis Z2 between a closed position (see FIG. 6) in which the first oil cooler 21 is in an in-use position, and an open position (see FIG. 11) in which the first cooling device is open outward in the left-right direction of the aircraft body.

[0071] The first oil cooler 21 is detachably fixed to the first support frame 28 and the middle vertical frame 26C with bolts B1 (corresponding to the "first fixing device" according to the present invention). That is, when the first support frame 28 is in the closed position, it is fixed with detachable bolts B1 (specifically, the bolts B1 that fix the first oil cooler 21 to the middle vertical frame 26C). The front edge of the first oil cooler 21 is provided with upper and lower fixing portions 21a that are fixed to the first support frame 28 with the bolts B1. The rear edge of the first oil cooler 21 is provided with upper and lower fixing portions 21a that are fixed to the middle vertical frame 26C with the bolts B1.

[0072] The upper and lower first hinges 28a support the first oil cooler 21 via the first support frame 28 so that the first oil cooler 21 can swing about the swing axis Z2. The first hinges 28a are fixed to the front vertical frame 26B with bolts. The first outlet member 29B extends along the swing axis Z2 on the side of the first oil cooler 21 where the first hinges 28a are located (the front side in this embodiment).

[0073] 7, the second support frame 30 is supported by the radiator frame 26 (rear vertical frame 26D) via upper and lower second hinges 30a (corresponding to the "second support portion" according to the present invention) so as to be swingable about a swing axis Z3 (corresponding to the "second swing axis" according to the present invention) extending along the vertical direction. The second support frame 30 is configured to be swingable open and closed about the swing axis Z3 between a closed position (see FIG. 7) in which the condenser 22 and the fuel cooler 24 are in an in-use position, and an open position (see FIG. 10) in which the condenser 22 and the fuel cooler 24 are open outward in the left-right direction of the aircraft.

[0074] The condenser 22 is detachably fixed to the second support frame 30 with bolts B2. The fuel cooler 24 is detachably fixed to the second support frame 30 with bolts B3. The front edge of the condenser 22 is provided with upper and lower fixing portions 22a that are fixed to the second support frame 30 with bolts B2. The rear edge of the condenser 22 is provided with upper and lower fixing portions 22a that are fixed to the second support frame 30 with bolts B2. The upper edge of the fuel cooler 24 is provided with front and rear fixing portions 24a that are fixed to the second support frame 30 with bolts B3. The lower edge of the fuel cooler 24 is provided with front and rear fixing portions 24a that are fixed to the second support frame 30 with bolts B3.

[0075] A fixing portion 30b is provided on the upper front edge of the second support frame 30 and is fixed to the first support frame 28 by a bolt B4 (corresponding to the "second fixing device" according to the present invention). That is, the second support frame 30 is fixed by the detachable bolt B4 when it is in the closed position.

[0076] The upper and lower second hinges 30a support the condenser 22 and the fuel cooler 24 via the second support frame 30 so that they can swing about the swing axis Z3. The second hinges 30a are fixed to the rear vertical frame 26D with bolts. The second introduction member 31A and the second outlet member 31B extend along the swing axis Z3 on the side of the condenser 22 where the second hinges 30a are located (the rear side in this embodiment). The fourth introduction member 34A and the fourth outlet member 34B extend along the swing axis Z3 on the side of the fuel cooler 24 where the second hinges 30a are located (the rear side in this embodiment).

[0077] As shown in Fig. 8, the third support frame 32 is supported by the radiator frame 26 (front vertical frame 26B) via third hinges 32a (corresponding to the "third support portion" according to the present invention) so as to be swingable about a swing axis Z2 extending along the up-down direction. The third support frame 32 is configured to be swingable open and closed about the swing axis Z2 between a closed position (see Fig. 8) in which the second oil cooler 23 is in an in-use orientation, and an open position (see Fig. 9) in which the second oil cooler 23 is open outward in the left-right direction of the aircraft. In other words, the third support frame 32 and the first support frame 28 are configured to swing open and closed about the common swing axis Z2.

[0078] The second oil cooler 23 is detachably fixed to the third support frame 32 and the second support frame 30 with bolts B5 (corresponding to the "third fixing device" according to the present invention). That is, the third support frame 32 is fixed with detachable bolts B5 (specifically, the bolts B5 that fix the second oil cooler 23 to the second support frame 30) when it is in the closed position. A fixing portion 23a that is fixed to the third support frame 32 with the bolts B5 is provided at the front edge of the second oil cooler 23. A fixing portion 23a that is fixed to the second support frame 30 with the bolts B5 is provided at the rear edge of the second oil cooler 23.

[0079] The third hinge 32a supports the second oil cooler 23 via the third support frame 32 so that the second oil cooler 23 can swing about the swing axis Z2. The third hinge 32a is fixed with a bolt to a portion of the front vertical frame 26B that is located between the upper first hinge 28a and the lower first hinge 28a. The third introduction member 33A and the third discharge member 33B extend along the swing axis Z2 on the side of the second oil cooler 23 where the third hinge 32a is located (the front side in this embodiment).

[0080] 4, the rear fixing portion 21a abuts against the middle vertical frame 26C from the right side, positioning the first support frame 28 in the closed position. That is, the first support frame 28 is configured to be positioned in the closed position by abutting against the radiator frame 26.

[0081] The second support frame 30 is positioned at the closed position by the fixing portion 30b abutting against the first support frame 28 from the right side. In other words, the second support frame 30 is configured to be positioned at the closed position by abutting against the first support frame 28.

[0082] The third support frame 32 is positioned at the closed position by the rear fixing portion 23a abutting against the second support frame 30 from the right side. In other words, the third support frame 32 is configured to be positioned at the closed position by abutting against the second support frame 30.

[0083] The oscillation axis Z2 is disposed at a position adjacent to the front vertical frame 26B. The oscillation axis Z2 is disposed outward in the left-right direction of the aircraft body with respect to the first oil cooler 21. In other words, the oscillation axis Z2 is disposed outward in the left-right direction of the aircraft body with respect to a position P of the right end of the first oil cooler 21. Specifically, the oscillation axis Z2 is disposed within a range W spanning from the left end of the first oil cooler 21 to the right end of the condenser 22 in the left-right direction of the aircraft body.

[0084] The oscillation axis Z3 is disposed at a position adjacent to the rear vertical frame 26D. That is, the oscillation axis Z2 and the oscillation axis Z3 are disposed at different positions in the fore-and-aft direction of the vehicle body. The oscillation axis Z3 is disposed outward in the left-right direction of the vehicle body relative to the first oil cooler 21. That is, the oscillation axis Z3 is disposed outward in the left-right direction of the vehicle body relative to a position P of the right end of the first oil cooler 21. Specifically, the oscillation axis Z3 is disposed within a range W spanning from the left end of the first oil cooler 21 to the right end of the condenser 22 in the left-right direction of the vehicle body. That is, the oscillation axis Z2 and the oscillation axis Z3 are disposed at the same position in the left-right direction of the vehicle body.

[0085] [Method of opening and closing the first support frame, second support frame, and third support frame] Next, a method for opening and closing the first support frame 28, the second support frame 30, and the third support frame 32 will be described with reference to FIGS.

[0086] First, as shown in FIG. 9 , the bolts B5 that secure the second oil cooler 23 (rear fixing portion 23a) to the second support frame 30 are removed from the second support frame 30. This releases the third support frame 32 from being fixed in the closed position. Then, by swinging the third support frame 32 forward about the swing axis Z2, the third support frame 32 can be repositioned to the open position. That is, the third support frame 32 is configured to be repositioned to the open position by swinging forward about the swing axis Z2.

[0087] Here, a retaining portion 26Ba (corresponding to the "third retaining portion" according to the present invention) is provided on the front vertical frame 26B. The retaining portion 26Ba is configured to hold the third support frame 32 in the open position by attaching a bolt B5 that fixed the rear fixing portion 23a to the second support frame 30. By attaching the above-mentioned bolt B5 to the retaining portion 26Ba when the third support frame 32 is changed to the open position, even if the third support frame 32 attempts to swing around the swing axis Z2 toward the closed position, the third support frame 32 comes into contact with the bolt B5 and the swing is prevented.

[0088] Next, as shown in FIG. 10, the bolts B4 that secure the second support frame 30 (fixing portions 30b) to the first support frame 28 are removed from the first support frame 28. This releases the second support frame 30 from being fixed in the closed position. Then, by swinging the second support frame 30 rearward about the swing axis Z3, the second support frame 30 can be repositioned to the open position. That is, the second support frame 30 is configured to be repositioned to the open position by swinging rearward about the swing axis Z3.

[0089] Here, a contact portion 30c is provided on the edge portion on the swing axis Z3 side of the second support frame 30. The contact portion 30c comes into contact with the rear vertical frame 26D, so that the second support frame 30 does not swing rearward about the swing axis Z3 when in the open position.

[0090] In this way, the second support frame 30 can be changed to the open position by changing the position of the third support frame 32 to the open position. The second support frame 30 is configured to swing open and close in a direction different from that of the third support frame 32. In other words, the third support frame 32 is configured to swing open and close in a direction different from that of the second support frame 30.

[0091] Here, the rear vertical frame 26D is provided with a retaining portion 26Da (corresponding to the "second retaining portion" according to the present invention). The retaining portion 26Da is configured to hold the second support frame 30 in the open position by attaching the bolt B4 that fixed the fixing portion 30b to the first support frame 28. By attaching the above-mentioned bolt B4 to the retaining portion 26Da when the second support frame 30 is changed to the open position, even if the second support frame 30 attempts to swing around the swing axis Z3 toward the closed position, the second support frame 30 comes into contact with the bolt B4 and the swing is prevented.

[0092] Next, as shown in FIG. 11 , the two bolts B1 that secure the first oil cooler 21 (the upper and lower rear fixing portions 21a) to the middle vertical frame 26C are removed from the middle vertical frame 26C. This releases the first support frame 28 from being fixed in the closed position. Then, by swinging the first support frame 28 forward about the swing axis Z2, the first support frame 28 can be repositioned to the open position. That is, the first support frame 28 is configured to be repositioned to the open position by swinging forward about the swing axis Z2.

[0093] In this way, the first support frame 28 can be moved to the open position by moving the second support frame 30 to the open position. The first support frame 28 and the second support frame 30 are configured to swing in different directions to open and close.

[0094] Here, the front vertical frame 26B is provided with a retaining portion 26Bb (corresponding to the "first retaining portion" according to the present invention). The retaining portion 26Bb is configured to hold the first support frame 28 in the open position by attaching a bolt B1 that fixed the rear fixing portion 21a to the middle vertical frame 26C. By attaching the above-mentioned bolt B1 to the retaining portion 26Bb when the first support frame 28 is changed to the open position, even if the first support frame 28 attempts to swing around the swing axis Z2 toward the closed position, the first support frame 28 comes into contact with the bolt B1 and the swing is prevented.

[0095] Furthermore, by performing the steps in reverse of those described above, the first support frame 28, the second support frame 30, and the third support frame 32 can each be repositioned to the closed position. Specifically, the first support frame 28 can be repositioned to the closed position after releasing the position held by the holding portion 26Bb, then the second support frame 30 can be repositioned to the closed position after releasing the position held by the holding portion 26Da, and then the third support frame 32 can be repositioned to the closed position after releasing the position held by the holding portion 26Ba.

[0096] [Other Embodiments] (1) In the above embodiment, the “first cooling device” according to the present invention is the first oil cooler 21. However, the “first cooling device” according to the present invention is not limited to the first oil cooler 21.

[0097] (2) In the above embodiment, the “second cooling device” according to the present invention is the condenser 22. However, the “second cooling device” according to the present invention is not limited to the condenser 22.

[0098] (3) In the above embodiment, the “third cooling device” according to the present invention is the second oil cooler 23. However, the “third cooling device” according to the present invention is not limited to the device related to the second oil cooler 23.

[0099] (4) In the above embodiment, the swing axis Z2 and the swing axis Z3 are axes extending in the up-down direction. However, the swing axis Z2 and the swing axis Z3 may be axes extending in the fore-and-aft direction of the aircraft body.

[0100] (5) In the above embodiment, the "first oscillation axis" according to the present invention and the "third oscillation axis" according to the present invention are configured by the same oscillation axis Z2. However, the "first oscillation axis" according to the present invention and the "third oscillation axis" according to the present invention may be configured by different oscillation axes.

[0101] (6) In the above embodiment, the radiator frame 26 is not configured to be swingable open and closed. However, the radiator frame 26 may be configured to be swingable open and closed.

[0102] (7) In the above embodiment, the first support frame 28, the second support frame 30, and the third support frame 32 are supported by the radiator frame 26. However, at least one of the first support frame 28, the second support frame 30, and the third support frame 32 may be supported by a member other than the radiator frame 26.

[0103] (8) In the above embodiment, the first outlet member 29B extends along the oscillation axis Z2 on the side where the first hinge 28a is located relative to the first oil cooler 21. However, the first introduction member 29A may also extend along the oscillation axis Z2 on the side where the first hinge 28a is located relative to the first oil cooler 21.

[0104] (9) In the above embodiment, the first oil cooler 21, the condenser 22, and the second oil cooler 23 are arranged in this order toward the outside in the left-right direction of the aircraft. However, the first oil cooler 21, the condenser 22, and the second oil cooler 23 do not have to be arranged in this order toward the outside in the left-right direction of the aircraft.

[0105] (10) In the above embodiment, the first support frame 28 is configured to be pivoted forward about the swing axis Z2 to be repositioned to the open position, the second support frame 30 is configured to be pivoted rearward about the swing axis Z3 to be repositioned to the open position, and the third support frame 32 is configured to be pivoted forward about the swing axis Z2 to be repositioned to the open position. However, the present invention is not limited to such configurations.

[0106] For example, the first support frame 28 may be configured to swing rearward about the "first swing axis" of the present invention and be repositioned to the open position, the second support frame 30 may be configured to swing forward about the "second swing axis" of the present invention and be repositioned to the open position, and the third support frame 32 may be configured to swing rearward about the "third swing axis" of the present invention and be repositioned to the open position.

[0107] Alternatively, the first support frame 28 may be configured to be repositioned in the open position by swinging upward, the second support frame 30 may be configured to be repositioned in the open position by swinging downward, and the third support frame 32 may be configured to be repositioned in the open position by swinging upward.

[0108] Alternatively, the first support frame 28 may be configured to be repositioned in the open position by swinging downward, the second support frame 30 may be configured to be repositioned in the open position by swinging upward, and the third support frame 32 may be configured to be repositioned in the open position by swinging downward. [Industrial Applicability]

[0109] The present invention can be used not only for head-feeding combine harvesters, but also for whole-culm feed combine harvesters and corn harvesters. [Explanation of symbols]

[0110] 19 Cooling fan 20 Radiator 21 First oil cooler (first cooling device) 22 Condenser (secondary cooling device) 23 Second oil cooler (third cooling device) 26Ba holding part (third holding part) 26Bb Holding part (first holding part) 26Da holding part (second holding part) 28 First support frame 28a First hinge (first support part) 29A First introduction member 29B First lead-out member 30 Second support frame 30a Second hinge (second support part) 31A Second introduction member 31B Second lead-out member 32 Third support frame 32a Third hinge (third support part) 33A Third introduction member 33B Third lead-out member B1 Bolt (first fixing device) B4 bolt (secondary fixing device) B5 bolt (third fixing) E-Engine Z2 Oscillating axis (first oscillating axis, oscillating axis) Z3 Swing axis (second swing axis)

Claims

1. A water-cooled engine and a cooling fan disposed outside the engine in the left-right direction of the aircraft and supplying cooling air; a cooling device disposed outside the cooling fan in the left-right direction of the aircraft; a tubular introduction member connected to the cooling device and introducing an object to be cooled into the cooling device; a tubular outlet member connected to the cooling device and configured to outlet the cooling target from the cooling device, the cooling device is configured to be swingable open and closed around a swing axis between a closed position in which it is in use and an open position in which it is open outward in the left-right direction of the machine body, A harvester in which the connection point between the cooling device and the introduction member and the connection point between the cooling device and the discharge member are located on the side of the swing axis of the cooling device.

2. The harvester according to claim 1 , wherein the inlet member and the outlet member extend along the swing axis on a side of the cooling device on which the swing axis is located.

3. The harvester according to claim 1 or 2, wherein the swing axis is an axis extending vertically.

4. The harvester according to any one of claims 1 to 3, further comprising a radiator that is arranged outside the engine in the left-right direction of the machine body and cools cooling water for the engine.

5. a support frame for supporting the cooling device; The harvester according to any one of claims 1 to 4, wherein the support frame is configured to be able to swing open and close about the swing axis between the open position and the closed position.

6. the support frame is fixed by a detachable fastener when in the closed position; The harvester according to claim 5, further comprising a holding portion to which the fastener is attached, thereby holding the support frame in the open position.

7. the cooling device includes a first cooling device and a second cooling device that are arranged outside the cooling fan in the left-right direction of the aircraft body, A harvester described in any one of claims 1 to 6, wherein the first cooling device is configured to be able to swing forward around a first swing axis, which is the swing axis of the first cooling device, and to be repositioned to a first open position, which is the open position, and the second cooling device is configured to be able to swing rearward around a second swing axis, which is the swing axis of the second cooling device, and to be repositioned to a second open position, which is the open position.

8. The harvester according to claim 7 , wherein the first swing axis and the second swing axis are disposed at different positions in the fore-and-aft direction of the machine body.

9. the introduction member includes a first introduction member that introduces the object to be cooled into the first cooling device and a second introduction member that introduces the object to be cooled into the second cooling device; the outlet member includes a first outlet member that outputs the cooling target from the first cooling device and a second outlet member that outputs the cooling target from the second cooling device, A harvester as described in claim 7 or 8, wherein the connection point between the first cooling device and the first introduction member and the connection point between the first cooling device and the first discharge member are located on the first oscillating axis side relative to the first cooling device.

10. A harvester as described in claim 9, wherein the first introduction member and the first discharge member extend along the first swing axis on the side where the first swing axis is located relative to the first cooling device, and the second introduction member and the second discharge member extend along the second swing axis on the side where the second swing axis is located relative to the second cooling device.

11. the cooling device includes a third cooling device disposed outside the cooling fan in the left-right direction of the aircraft body, A harvester described in any one of claims 7 to 10, wherein the third cooling device is configured to be swingable open and closed between a third closed position, which is the posture when in use, and a third open position, which is a posture open outward in the left-right direction of the machine body.

12. the introduction members include a first introduction member that introduces the object to be cooled into the first cooling device, a second introduction member that introduces the object to be cooled into the second cooling device, and a third introduction member that introduces the object to be cooled into the third cooling device; the outlet members include a first outlet member that outputs the cooling target from the first cooling device, a second outlet member that outputs the cooling target from the second cooling device, and a third outlet member that outputs the cooling target from the third cooling device; A harvester as described in claim 11, wherein the first introduction member and the first discharge member extend along the first swing axis on the side where the first swing axis is located relative to the first cooling device, the second introduction member and the second discharge member extend along the second swing axis on the side where the second swing axis is located relative to the second cooling device, and the third introduction member and the third discharge member extend along the third swing axis on the side where the third swing axis, which is the swing axis of the third cooling device, is located relative to the third cooling device.

13. 13. The harvester of claim 12, wherein the first cooling device is configured to be repositionable to the first open position by swinging forward about the first swing axis, the second cooling device is configured to be repositionable to the second open position by swinging rearward about the second swing axis, and the third cooling device is configured to be repositionable to the third open position by swinging forward about the third swing axis.

14. The harvester according to claim 12 or 13, wherein the first swing axis, the second swing axis, and the third swing axis are axes extending in the up-down direction.

Images