JP7750751B2 - harvester - Google Patents

Description

The present invention relates to a harvester.

A conventional harvester is known, for example, from the harvester described in Patent Document 1. The harvester described in Patent Document 1 is equipped with 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 laterally outward from the engine and cools the engine's cooling water, a cooling fan (referred to as "cooling fan [18]" in the document) that is arranged laterally between the engine and the radiator and supplies cooling air to the radiator, a first cooling device (referred to as "oil cooler [60]" in the document) that is arranged laterally outward from the radiator, and a second cooling device (referred to as "intercooler [80]" in the document) that is arranged laterally outward from the radiator.

Japanese Patent Application Laid-Open No. 2021-65150

In the harvester described in Patent Document 1, the first and second cooling devices must be removed when performing radiator maintenance, leaving room for improvement in terms of making radiator maintenance easier.

In light of the above situation, there is a demand for a harvester that allows for easy radiator maintenance.

A feature of the present invention is a harvester including a water-cooled engine, a radiator that is arranged on the outside of the engine in the left-right direction of the machine body and cools cooling water for the engine, a cooling fan that is arranged between the engine and the radiator in the left-right direction of the machine body and supplies cooling air to the radiator, a first cooling device that is arranged on the outside of the radiator in the left-right direction of the machine body, and a second cooling device that is arranged on the outside of the radiator in the left-right direction of the machine body, wherein the harvester includes a first support frame that supports the first cooling device, a second support frame that supports the second cooling device, 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 in-use position 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 in-use position and a second open position in which the second cooling device is open outward in the left-right direction of the machine body , and all of the first swing axis and the second swing axis are axes that extend in the up-down direction .

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

Furthermore, the rear surfaces of the first cooling device and the second cooling device are also exposed, which allows for easy maintenance of the first cooling device and the second cooling device.
Furthermore, 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.
Furthermore, in the present invention, it is preferable that the first cooling device is configured to be able to swing forward around the first swing axis and change its position to the first open position, and the second cooling device is configured to be able to swing rearward around the second swing axis and change its position to the second open position.

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 outboard of 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.

This characteristic configuration allows the first and second cooling devices to be arranged compactly. Furthermore, 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.

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

With this characteristic configuration, the second support frame can be reliably positioned in the second closed position by abutting the first support frame. By utilizing the first support frame, the structure for positioning the second support frame in the second closed position can be simplified.

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 fore-and-aft direction of the aircraft.

This characteristic configuration allows the structure that supports the first support frame so that it can swing open and closed and the structure that supports the second support frame so that it can swing open and closed to be configured without interfering with each other.

Furthermore, in the present invention, 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 in the vertical direction, a first support part is provided that supports the first cooling device so that it can oscillate around the first oscillation axis, and the first introduction member and the first outlet member preferably extend along the first oscillation axis on the side of the first cooling device where the first support part is located.

This characteristic configuration positions the first introduction member and the first outlet member on the same side of the first cooling device (the side where the first support portion is located). This makes it easy to 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.

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 in the vertical direction, a second support part is provided that supports the second cooling device so that it can oscillate around the second oscillation axis, 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.

With this characteristic configuration, the second introduction member and the second outlet member are located on the same side of the second cooling device (the side where the second support portion is located). This makes it easy to bundle 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.

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 holding portion that holds the first support frame in the first open position.

With this characteristic configuration, the first fixing device is attached to the first holding portion, thereby reliably holding the first support frame in the first open position.

Here, while the first fixing device is attached to the first holding portion, the first support frame cannot be repositioned to the first closed position; in order to reposition the first support frame to the first closed position, the first fixing device must be removed from the first holding portion. This makes it clear to the worker that after removing the first fixing device from the first holding portion in order to reposition the first support frame to the first closed position, the first support frame should be fixed in the first closed position with the first fixing device.

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.

With this characteristic configuration, the second fixing device is attached to the second holding portion, thereby reliably holding the second support frame in the second open position.

Here, while the second fixing device is attached to the second holding portion, the second support frame cannot be repositioned to the second closed position; in order to reposition the second support frame to the second closed position, the second fixing device must be removed from the second holding portion. This makes it clear to the worker that after removing the second fixing device from the second holding portion 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.

Furthermore, the present invention preferably includes a third cooling device disposed outside the radiator in the left-right direction of the aircraft, and a third support frame supporting the third cooling device, and the third support frame is configured to be able to swing open and close about a third swing axis between a third closed position in which the third cooling device is in use, and a third open position in which the third cooling device is open outward in the left-right direction of the aircraft.

According to this characteristic configuration, when the third support frame is swung around the third swing axis and repositioned to the third open position, the outer side (lateral outer side) of the radiator in the left-right direction of the aircraft is opened. This allows easy access to the lateral outer side of the radiator from the outside in the left-right direction of the aircraft when performing maintenance on the radiator.

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.
Furthermore, in the present invention, it is preferable that the first cooling device is configured to be able to swing forward around the first swing axis and change its position to the first open position, the second cooling device is configured to be able to swing rearward around the second swing axis and change its position to the second open position, and the third cooling device is configured to be able to swing forward around the third swing axis and change its position to the third open position.

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.

With this characteristic configuration, the first support frame, second support frame, and third support frame that are adjacent to each other in the left-right direction of the aircraft swing in different directions to open and close. This prevents the first support frame, second support frame, and third support frame from interfering with each other when swinging open and closed.

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 in the vertical direction.

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

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

With this characteristic configuration, the first support frame, second support frame, and third support frame that are adjacent to each other in the left-right direction of the aircraft swing in different directions to open and close. This prevents the first support frame, second support frame, and third support frame from interfering with each other when swinging open and closed.

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

With this characteristic configuration, the first support frame, second support frame, and third support frame that are adjacent to each other in the left-right direction of the aircraft swing in different directions to open and close. This prevents the first support frame, second support frame, and third support frame from interfering with each other when swinging open and closed.

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

With this characteristic configuration, the second support frame can be reliably positioned in the second closed position by abutting the first support frame. By utilizing the first support frame, the structure for positioning the second support frame in the second closed position can be simplified.

In addition, the third support frame can be reliably positioned in the third closed position by abutting the second support frame. By using the second support frame, the structure for positioning the third support frame in the third closed position can be simplified.

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.

This characteristic configuration creates a space between the first cooling device and the swing axis in the left-right direction of the machine body. Then, 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.

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 discharges 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 in the vertical direction, a third support part is provided that supports the third cooling device so that it can oscillate around the third oscillation axis, 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.

With this characteristic configuration, the third introduction member and the third outlet member are located on the same side of the third cooling device (the side where the third support part is located). This makes it easy to bundle 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.

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 holding portion that holds the third support frame in the third open position.

With this characteristic configuration, the third fixing device is attached to the third holding portion, thereby reliably holding the third support frame in the third open position.

Here, while the third fixing device is attached to the third holding portion, the third support frame cannot be repositioned to the third closed position; in order to reposition the third support frame to the third closed position, the third fixing device must be removed from the third holding portion. This makes it possible to remind the worker that after removing the third fixing device from the third holding portion in order 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.

FIG. 2 is a right side view showing the combine harvester. FIG. FIG. 4 is a right side view showing the inside of the engine compartment and the air cleaner compartment with the dustproof cover open. FIG. FIG. 2 is a right side view showing the cooling system unit. FIG. 10 is a right side view showing a state in which the first oil cooler is supported by the first support frame. 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. FIG. 10 is a right side view showing a state in which the second oil cooler is supported by the third support frame. FIG. 10 is a plan view showing a state in which the third support frame has been changed to an open position. 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. 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.

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

[Overall configuration of the combine]
1 and 2 show a head-feeding combine harvester (corresponding to the "harvester" of the present invention). The combine harvester 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.

The traveling machine body 1 comprises 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 located in front of the traveling machine body 1. The reaping unit 2 is configured to reap planted stalks.

The threshing device 3 is configured to thresh the harvested stalks. The grain storage tank 4 is arranged alongside the threshing device 3 (in this embodiment, adjacent to it on the right). The grain storage tank 4 is configured to store grain. The grain discharge device 5 is configured to discharge the grain from the grain storage tank 4.

The driver's cabin 6 is positioned offset to one of the left and right sides of the traveling vehicle body 1 (the right side in this embodiment). 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 interior of the driver's cabin 6 is provided. The air conditioning unit is housed, for example, in the roof section of the cabin section 12.

An engine room 14 is formed below the driver's seat 13. The engine room 14 houses the motor 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.

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

The motor unit 7 includes a water-cooled engine E, an exhaust gas purification system 18, a cooling system unit U, and a cooling fan 19. The exhaust gas purification system 18 is configured to purify the exhaust gas from the engine E using a DPF (Diesel Particulate Filter). The cooling system unit U is located on the outside of 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 system" according to the present invention), a condenser 22 (corresponding to the "second cooling system" according to the present invention), a second oil cooler 23 (corresponding to the "third cooling system" according to the present invention), and a fuel cooler 24.

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 air from outside the aircraft flows into the engine compartment 14 through the dust cover 17, and a reverse rotation state in which air from the engine compartment 14 flows out of the aircraft through the dust cover 17.

The transmission unit 8 is located 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 the main transmission, a gear-type transmission mechanism as the sub-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.

[Cooling system unit]
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, which serves as a passage for the air circulated by the cooling fan 19, is supported on the right side of the radiator frame 26.

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. 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 the first support frame 28.

Connected to the first oil cooler 21 are a tubular first inlet 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. The first inlet member 29A and the first outlet member 29B are made of flexible tubular members. The first inlet member 29A is connected to the lower part of the front edge of the first oil cooler 21. The first outlet member 29B is connected to the upper part of the front edge of the first oil cooler 21.

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

Connected to the condenser 22 are a tubular second inlet 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. The second inlet member 31A and the second outlet member 31B are made of flexible tubular members. The second inlet member 31A is connected to the lower part of the rear edge of the condenser 22. The second outlet member 31B is connected to the upper part of the rear edge of the condenser 22.

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

Connected to the second oil cooler 23 are a tubular third inlet 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. The third inlet member 33A and the third outlet member 33B are made of flexible tubular members. The third inlet member 33A is connected to the lower part of the front edge of the second oil cooler 23. The third outlet member 33B is connected to the upper part of the front edge of the second oil cooler 23.

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

Connected to the fuel cooler 24 are 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. 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 of the upper edge of the fuel cooler 24. The fourth outlet member 34B is connected to the front of the upper edge of the fuel cooler 24.

The first oil cooler 21, condenser 22, and second oil cooler 23 are arranged in this order outward in the left-right direction of the aircraft so that they overlap each other in side view. The first oil cooler 21 and condenser 22 are arranged so that the condenser 22 is located outward in the left-right direction of the aircraft from the first oil cooler 21, and so that they overlap each other in side view. The condenser 22 and second oil cooler 23 are arranged so that the second oil cooler 23 is located outward in the left-right direction of the aircraft from the condenser 22, and so that they overlap each other in side view. The first oil cooler 21 and fuel cooler 24 are arranged so that the fuel cooler 24 is located outward in the left-right direction of the aircraft from the first oil cooler 21, and so that they overlap each other in side view.

[Support structure for cooling system unit]
6, the radiator frame 26 includes a frame-shaped main frame 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 26A.

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 able to swing about a swing axis Z2 (corresponding to the "first swing axis" or "swing axis" according to the present invention) extending in the vertical direction. The first support frame 28 is configured to be able to swing open and close about the swing axis Z2 between a closed position (see Figure 6) in which the first oil cooler 21 is in its in-use position, and an open position (see Figure 11) in which the first cooling device is open outward in the left-right direction of the aircraft.

The first oil cooler 21 is removably 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 removable 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 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 bolts B1.

The upper and lower first hinges 28a support the first oil cooler 21 via the first support frame 28 so that it 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).

As shown in FIG. 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 able to swing about a swing axis Z3 (corresponding to the "second swing axis" according to the present invention) extending in the vertical direction. The second support frame 30 is configured to be able to swing open and close about the swing axis Z3 between a closed position (see FIG. 7) in which the condenser 22 and fuel cooler 24 are in their in-use orientation, and an open position (see FIG. 10) in which the condenser 22 and fuel cooler 24 are open outward in the left-right direction of the aircraft.

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.

A fixing portion 30b is provided at the upper front edge of the second support frame 30, which is fixed to the first support frame 28 by a bolt B4 (corresponding to the "second fixing device" according to the present invention). In other words, when the second support frame 30 is in the closed position, it is fixed by the removable bolt B4.

The upper and lower second hinges 30a support the condenser 22 and 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 discharge member 31B extend along the swing axis Z3 on the side of the condenser 22 where the second hinge 30a is located (the rear side in this embodiment). The fourth introduction member 34A and the fourth discharge member 34B extend along the swing axis Z3 on the side of the fuel cooler 24 where the second hinge 30a is located (the rear side in this embodiment).

As shown in FIG. 8, the third support frame 32 is supported on the radiator frame 26 (front vertical frame 26B) via a third hinge 32a (corresponding to the "third support portion" according to the present invention) so as to be swingable about a swing axis Z2 extending in 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 its 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.

The second oil cooler 23 is removably 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, when the third support frame 32 is in the closed position, it is fixed with removable bolts B5 (specifically, bolts B5 that fix the second oil cooler 23 to the second support frame 30). The front edge of the second oil cooler 23 is provided with a fixing portion 23a that is fixed to the third support frame 32 with bolts B5. The rear edge of the second oil cooler 23 is provided with a fixing portion 23a that is fixed to the second support frame 30 with bolts B5.

The third hinge 32a supports the second oil cooler 23 via the third support frame 32 so that it can swing about the swing axis Z2. The third hinge 32a is fixed with bolts to a portion of the front vertical frame 26B located between the upper first hinge 28a and the lower first hinge 28a. The third inlet member 33A and the third outlet 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).

As shown in Figure 4, the rear fixing portion 21a abuts the middle vertical frame 26C from the right side, positioning the first support frame 28 in the closed position. In other words, the first support frame 28 is configured to be positioned in the closed position by abutting the radiator frame 26.

The second support frame 30 is positioned in the closed position when the fixing portion 30b abuts the first support frame 28 from the right side. In other words, the second support frame 30 is configured to be positioned in the closed position when it abuts the first support frame 28.

The third support frame 32 is positioned in the closed position when the rear fixing portion 23a abuts the second support frame 30 from the right side. In other words, the third support frame 32 is configured to be positioned in the closed position when it abuts the second support frame 30.

The oscillation axis Z2 is located adjacent to the front vertical frame 26B. The oscillation axis Z2 is located outside the first oil cooler 21 in the left-right direction of the aircraft. In other words, the oscillation axis Z2 is located outside the position P of the right end of the first oil cooler 21 in the left-right direction of the aircraft. Specifically, the oscillation axis Z2 is located within a range W that spans the left end of the first oil cooler 21 and the right end of the condenser 22 in the left-right direction of the aircraft.

The swing axis Z3 is located adjacent to the rear vertical frame 26D. That is, the swing axis Z2 and the swing axis Z3 are located at different positions in the fore-and-aft direction of the vehicle. The swing axis Z3 is located outboard of the first oil cooler 21 in the left-right direction of the vehicle. That is, the swing axis Z3 is located outboard of the position P of the right end of the first oil cooler 21 in the left-right direction of the vehicle. Specifically, the swing axis Z3 is located within a range W that spans the left end of the first oil cooler 21 and the right end of the condenser 22 in the left-right direction of the vehicle. That is, the swing axis Z2 and the swing axis Z3 are located at the same position in the left-right direction of the vehicle.

[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.

First, as shown in FIG. 9 , the bolt B5 that secures the second oil cooler 23 (rear fixing portion 23a) to the second support frame 30 is removed from the second support frame 30. This releases the third support frame 32 from its 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. In other words, the third support frame 32 is configured to swing forward about the swing axis Z2 and be repositioned to the open position.

Here, the front vertical frame 26B is provided with a retaining portion 26Ba (corresponding to the "third retaining portion" according to the present invention). The retaining portion 26Ba is configured to hold the third support frame 32 in the open position by attaching the bolt B5 that secured 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 repositioned 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, preventing the swing.

Next, as shown in FIG. 10, the bolt B4 that secures the second support frame 30 (fixing portion 30b) to the first support frame 28 is removed from the first support frame 28. This releases the second support frame 30 from its 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. In other words, the second support frame 30 is configured to be repositioned to the open position by swinging rearward about the swing axis Z3.

Here, a contact portion 30c is provided on the edge of the second support frame 30 on the side of the swing axis Z3. The contact portion 30c contacts the rear vertical frame 26D, preventing the second support frame 30 from swinging rearward around the swing axis Z3 when in the open position.

In this way, the second support frame 30 can be repositioned to the open position by repositioning the third support frame 32 to the open position. The second support frame 30 is configured to swing open and close in a different direction from the third support frame 32. In other words, the third support frame 32 is configured to swing open and close in a different direction from the second support frame 30.

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 secured 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 repositioned 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, preventing the swing.

Next, as shown in FIG. 11, the two bolts B1 that secure the first oil cooler 21 (the rear upper and lower 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 its 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. In other words, the first support frame 28 is configured to be repositioned to the open position by swinging forward about the swing axis Z2.

In this way, the first support frame 28 can be repositioned to the open position by repositioning 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.

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 the bolt B1 that secured 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 repositioned to the open position, even if the first support frame 28 attempts to swing toward the closed position around the swing axis Z2, the first support frame 28 comes into contact with the bolt B1, preventing the swing.

Furthermore, by performing the steps reversing those described above, the first support frame 28, second support frame 30, and 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, the second support frame 30 can be repositioned to the closed position after releasing the position held by the holding portion 26Da, and the third support frame 32 can be repositioned to the closed position after releasing the position held by the holding portion 26Ba.

[Another embodiment]
(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.

(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.

(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.

(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 also be axes extending in the fore-and-aft direction of the aircraft body.

(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.

(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.

(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.

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

(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.

(10) In the above embodiment, the first support frame 28 is configured to swing forward about the swing axis Z2 to change its position to the open position, the second support frame 30 is configured to swing rearward about the swing axis Z3 to change its position to the open position, and the third support frame 32 is configured to swing forward about the swing axis Z2 to change its position to the open position. However, the present invention is not limited to such a configuration.

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.

Alternatively, the first support frame 28 may be configured to swing upward to be repositioned in the open position, the second support frame 30 may be configured to swing downward to be repositioned in the open position, and the third support frame 32 may be configured to swing upward to be repositioned in the open position.

Alternatively, the first support frame 28 may be configured to swing downward to be repositioned in the open position, the second support frame 30 may be configured to swing upward to be repositioned in the open position, and the third support frame 32 may be configured to swing downward to be repositioned in the open position.

This invention can be used not only for head-feeding combine harvesters, but also for whole-culm feed combine harvesters and corn harvesters.

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 portion)
29A First introduction member 29B First extraction member 30 Second support frame 30a Second hinge (second support portion)
31A: Second introduction member 31B: Second extraction member 32: Third support frame 32a: Third hinge (third support portion)
33A Third introduction member 33B Third extraction member B1 Bolt (first fixing device)
B4 bolt (secondary fixing device)
B5 Bolt (third fixing device)
E Engine Z2 Oscillating shaft center (first oscillating shaft center, oscillating shaft center)
Z3 Swing axis (second swing axis)

Claims (19)

A water-cooled engine and
a radiator disposed outside the engine in the left-right direction of the aircraft body and cooling cooling water for the engine;
a cooling fan disposed between the engine and the radiator in the left-right direction of the aircraft body and configured to supply cooling air to the radiator;
a first cooling device disposed outside the radiator in the left-right direction of the aircraft;
A harvester comprising: a second cooling device arranged outside the radiator in the left-right direction of the machine body;
a first support frame supporting the first cooling device;
a second support frame for supporting the second cooling device;
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 attitude during use and a first open position in which the first cooling device is in an attitude open outward in the left-right direction of the machine body,
the second support frame is configured to be swingable open and closed around a second swing axis between a second closed position in which the second cooling device is in an attitude during use and a second open position in which the second cooling device is in an attitude open outward in the left-right direction of the machine body ,
A harvester in which the first swing axis and the second swing axis are all axes extending along the vertical direction . 2. The harvester of claim 1, wherein the first cooling device is configured to be able to swing forward about the first swing axis and change its position to the first open position, and the second cooling device is configured to be able to swing rearward about the second swing axis and change its position to the second open position. the first cooling device and the second cooling device are arranged so that the second cooling device is located outward in the left-right direction of the aircraft with respect to the first cooling device and overlaps with each other in a side view,
The harvester according to claim 1 or 2 , wherein the first support frame can be repositioned to the first open position by repositioning the second support frame to the second open position. 4. A harvester according to claim 1, wherein the second support frame is configured to be positioned in the second closed position against the first support frame. The harvester according to any one of claims 1 to 4 , 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. a tubular first introduction member that introduces an object to be cooled into the first cooling device and a tubular first discharge member that discharges 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 up-down direction,
a first support portion that supports the first cooling device so that the first cooling device can swing around the first swing axis;
A harvester described in any one of claims 1 to 5, wherein the first introduction member and the first discharge member extend along the first swing axis on the side where the first support portion is located relative to the first cooling device. a tubular second introduction member that introduces the object to be cooled into the second cooling device and a tubular second discharge member that discharges 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 up-down direction,
a second support portion that supports the second cooling device so that the second cooling device can swing around the second swing axis;
A harvester as described in any one of claims 1 to 6, wherein the second inlet member and the second outlet member extend along the second swing axis on the side where the second support portion is located relative to the second cooling device. the first support frame is fixed by a detachable first fixing device when the first support frame is located at the first closed position;
The harvester according to any one of claims 1 to 7, further comprising a first holding portion to which the first fixing device is attached, thereby holding the first support frame in the first open position. the second support frame is fixed by a detachable second fastener when positioned at the second closed position;
The harvester according to any one of claims 1 to 8, further comprising a second holding portion to which the second fixing device is attached, thereby holding the second support frame in the second open position. a third cooling device disposed outside the radiator in the left-right direction of the aircraft;
a third support frame for supporting the third cooling device;
A harvester described in any one of claims 1 to 9, wherein 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 in-use position, and a third open position in which the third cooling device is in an open position outward in the left-right direction of the body of the harvester. The harvester of claim 10, wherein the first cooling device is configured to be able to swing forward about the first swing axis and change its position to the first open position, the second cooling device is configured to be able to swing rearward about the second swing axis and change its position to the second open position, and the third cooling device is configured to be able to swing forward about the third swing axis and change its position to the third open position. 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 body,
the first support frame and the second support frame are configured to swing in different directions to open and close,
The harvester according to claim 10 or 11 , wherein the third support frame is configured to swing open and close in a direction different from that of the second support frame. The harvester according to claim 12 , wherein the first swing axis, the second swing axis, and the third swing axis are axes extending in the up-down direction. the first support frame is configured to be pivoted forward about the first pivot axis to be repositioned to the first open position,
the second support frame is configured to be pivoted rearward about the second pivot axis to be repositioned to the second open position,
The harvester according to claim 13 , wherein the third support frame is configured to be pivoted forward about the third pivot axis to be repositioned to the third open position. the first support frame is configured to be pivoted rearward about the first pivot axis to be repositioned to the first open position,
the second support frame is configured to be pivoted forward about the second pivot axis to be repositioned to the second open position,
The harvester according to claim 13 , wherein the third support frame is configured to be pivoted rearward about the third pivot axis to be repositioned to the third open position. the second support frame is configured to be positioned in the second closed position against the first support frame;
16. A harvester according to any one of claims 10 to 15 , wherein the third support frame is configured to be positioned in the third closed position against the second support frame. the second cooling device and the third cooling device are disposed outside the first cooling device in the left-right direction of the aircraft body,
the first support frame and either the second support frame or the third support frame are configured to swing about a common swing axis extending along the up-down direction to open and close,
The harvester according to any one of claims 10 to 16 , wherein the swing axis is disposed outside the first cooling device in the left-right direction of the machine body. a tubular third introduction member that introduces the object to be cooled into the third cooling device and a tubular third discharge member that discharges 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 up-down direction,
a third support portion that supports the third cooling device so that the third cooling device can swing around the third swing axis;
A harvester described in any one of claims 10 to 17 , wherein the third inlet member and the third outlet member extend along the third swing axis on the side where the third support portion is located relative to the third cooling device. the third support frame is fixed by a detachable third fastener when positioned at the third closed position;
19. The harvester according to any one of claims 10 to 18 , further comprising a third holding portion to which the third fixing device is attached, thereby holding the third support frame in the third open position.