harvester

Abstract

To provide a desired harvester whose radiator can be easily maintained.SOLUTION: The harvester is provided with: a first cooling device 21 arranged outside in a lateral direction of the harvester with respect to a radiator 20 and a first support frame 28 supporting the first cooling device 21. The first support frame 28 is configured to be able to openably and closably swing to a first closing position at which the first cooling device 21 is brought into in a use attitude and to a first opening position at which the first cooling device 21 is brought into an attitude opened to outside in the lateral direction of the harvester, around a first swinging shaft center Z2. The harvester is further provided with a first lock mechanism 35 that can be switched to a first lock state where the first support frame 28 is restricted from swinging from the first opening position to the first closing position and a first releasing state where the first support frame 28 is not restricted from swinging. When the first support frame 28 is at the first opening position, the first lock mechanism 35 is switched from the first releasing state to the first lock state.SELECTED DRAWING: Figure 5

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 in the document as "engine

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

[17] ") that is arranged outside the engine in the left-right direction of the machine body and cools the cooling water for the engine, a first cooling device (referred to in the document as "oil cooler

[60] ") that is arranged outside the radiator in the left-right direction of the machine body, and a first support frame (referred to in the document as "frames

[61] ,

[62] ") that supports the first cooling device. [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, when performing maintenance on the radiator, the first cooling device must be removed from the first support frame, and there is room for improvement in terms of making it easier to perform maintenance on the radiator.

[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] The present invention is characterized by comprising a water-cooled engine, a radiator disposed outside the engine in the left-right direction of the aircraft body and cooling coolant for the engine, a first cooling device disposed outside the radiator in the left-right direction of the aircraft body, and a first support frame supporting the first cooling device; a second cooling device disposed outside the first cooling device in the left-right direction of the aircraft body; and a second support frame 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 where the first cooling device is in an attitude during use and a first open position where the first cooling device is in an attitude opened outward in the left-right direction of the machine body, and is provided with a first locking mechanism switchable between a first locked state that restricts the first support frame from swinging from the first open position to the first closed position and a first released state that does not restrict the swinging of the first support frame, and the first locking mechanism is switched from the first released state to the first locked state when the first support frame is positioned at the first open position. 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 attitude during use and a second open position in which the second cooling device is in an attitude opened outward in the left-right direction of the machine body, and is provided with a fixing device that fixes the second support frame to the second closed position, and a fixed portion to which the fixing device is fixed when the second support frame is in the second closed position, and the fixed portion is provided on the first support frame. The reason is that.

[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, the outer side surface (lateral outer surface) of the radiator in the left-right direction of the machine body is released. 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] Furthermore, when the first support frame is positioned in the first open position, the first locking mechanism automatically switches from the first released state to the first locked state. This prevents the first support frame from accidentally swinging toward the first closed position when the first support frame is positioned in the first open position. Furthermore, the first locking mechanism can be easily switched from the first released state to the first locked state simply by performing the operation to position the first support frame in the first open position.

[0009] Furthermore, in the present invention, it is preferable that the first locking mechanism be provided in a portion of the first support frame that is located on the first swing axis side.

[0010] According to this characteristic configuration, the first locking mechanism restricts the first support frame from pivoting from the first open position to the first closed position at a portion of the first support frame located on the first pivot axis side, thereby reliably restricting the first support frame from pivoting from the first open position to the first closed position.

[0011] Furthermore, in the present invention, it is preferable that the first locking mechanism has a first locking pin that is movable in a direction along the first swing axis, and a first regulating portion that is provided on the first support frame and regulates movement of the first locking pin, and that as the first support frame swings toward the first open position, the regulation of the movement of the first locking pin by the first regulating portion is released, causing the first locking pin to move and regulate the swing of the first support frame from the first open position toward the first closed position.

[0012] According to this characteristic configuration, the first lock mechanism can be easily configured by the first lock pin and the first restricting portion.

[0013] Furthermore, in the present invention, the cooling system includes a second cooling device arranged outside the first cooling device in the left-right direction of the machine body, and a second support frame supporting the second cooling device, wherein the second support frame is configured to be able to swing open and close around a second swing axis between a second closed position in which the second cooling device is in an attitude when in use and a second open position in which the second cooling device is in an attitude opened outward in the left-right direction of the machine body, and includes a second locking mechanism switchable between a second locked state that restricts the second support frame from swinging from the second open position to the second closed position and a second released state that does not restrict the swinging of the second support frame, and preferably the second locking mechanism switches from the second released state to the second locked state when the second support frame is positioned at the second open position.

[0014] According to this characteristic configuration, when 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 first cooling device in the left-right direction of the aircraft is released. This allows easy access to the lateral outer surface of the first cooling device from outside in the left-right direction of the aircraft when performing maintenance on the first cooling device.

[0015] Furthermore, when the second support frame is positioned in the second open position, the second locking mechanism automatically switches from the second released state to the second locked state. This prevents the second support frame from unintentionally swinging toward the second closed position when the second support frame is positioned in the second open position. Furthermore, the second locking mechanism can be easily switched from the second released state to the second locked state simply by performing the operation to position the second support frame in the second open position.

[0016] Furthermore, in the present invention, it is preferable that the second locking mechanism be provided in a portion of the second support frame that is located on the second pivot axis side.

[0017] According to this characteristic configuration, the second locking mechanism restricts the second support frame from pivoting from the second open position to the second closed position at a portion of the second support frame located on the second pivot axis side, thereby reliably restricting the second support frame from pivoting from the second open position to the second closed position.

[0018] Furthermore, in the present invention, it is preferable that the second locking mechanism has a second locking pin that is movable in a direction along the second swing axis, and a second regulating portion that is provided on the second support frame and regulates the movement of the second locking pin, and that as the second support frame swings toward the second open position, the regulation of the movement of the second locking pin by the second regulating portion is released, causing the second locking pin to move and regulate the swing of the second support frame from the second open position toward the second closed position.

[0019] According to this characteristic configuration, the second lock mechanism can be easily configured by the second lock pin and the second restricting portion.

[0020] The features of the present invention are: , a water-cooled engine, a radiator arranged outside the engine in the left-right direction of the aircraft body and cooling coolant for the engine, a first cooling device arranged outside the radiator in the left-right direction of the aircraft body, a first support frame supporting the first cooling device, a second cooling device arranged outside the first cooling device in the left-right direction of the aircraft body, and a second support frame supporting the second cooling device; a third cooling device disposed outside the second cooling device in the left-right direction of the aircraft body; and a third support frame supporting the third cooling device; a first support frame 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 opened outward in the left-right direction of the machine body, and a first locking mechanism configured to be switchable between a first locked state that restricts the first support frame from swinging from the first open position to the first closed position and a first released state that does not restrict the swinging of the first support frame, and the first locking mechanism configured to be switchable from the first released state to the first locked state when the first support frame is positioned at the first open position 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 attitude during use and a second open position in which the second cooling device is in an attitude opened outward in the left-right direction of the machine body, and is provided with a second locking mechanism switchable between a second locked state that restricts the second support frame from swinging from the second open position to the second closed position and a second released state that does not restrict the swinging of the second support frame, and the second locking mechanism switches from the second released state to the second locked state when the second support frame is positioned at the second open position. 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 an attitude during use and a third open position in which the third cooling device is in an attitude opened outward in the left-right direction of the machine body, and is provided with a third locking mechanism that is switchable between a third locked state that restricts the third support frame from swinging from the third open position to the third closed position and a third released state that does not restrict the swinging of the third support frame, and the third locking mechanism switches from the third released state to the third locked state when the third support frame is positioned at the third open position. The thing is .

[0021] 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 second cooling device in the left-right direction of the aircraft is released. This allows easy access to the lateral outer surface of the second cooling device from outside in the left-right direction of the aircraft when performing maintenance on the second cooling device.

[0022] Furthermore, when the third support frame is positioned in the third open position, the third locking mechanism automatically switches from the third released state to the third locked state. This prevents the third support frame from unintentionally swinging toward the third closed position when the third support frame is positioned in the third open position. Furthermore, the third locking mechanism can be easily switched from the third released state to the third locked state simply by performing the operation to position the third support frame in the third open position.

[0023] Furthermore, in the present invention, it is preferable that the third locking mechanism be provided in a portion of the third support frame that is located on the third swing axis side.

[0024] According to this characteristic configuration, the third locking mechanism restricts the third support frame from pivoting from the third open position to the third closed position at a portion of the third support frame located on the third pivot axis side, thereby reliably restricting the third support frame from pivoting from the third open position to the third closed position.

[0025] Furthermore, in the present invention, it is preferable that the third locking mechanism has a third locking pin that is movable in a direction along the third swing axis, and a third regulating portion that is provided on the third support frame and regulates the movement of the third locking pin, and that as the third support frame swings toward the third open position, the regulation of the movement of the third locking pin by the third regulating portion is released, causing the third locking pin to move and regulate the swing of the third support frame from the third open position toward the third closed position.

[0026] According to this characteristic configuration, the third lock mechanism can be easily configured by the third lock pin and the third restricting portion.

[0027] Furthermore, in the present invention, it is preferable that the first cooling device, the second cooling device, and the third cooling device are arranged so as to overlap one another in a side view, and that by changing the position of the third support frame to the third open position, the second support frame can be changed to the second open position, and that 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.

[0028] This characteristic configuration allows the first cooling device, the second cooling device, and the third cooling device to be arranged compactly. Furthermore, by changing the position of the third support frame to the third open position, the second support frame can be changed to the second open position without the second cooling device interfering with the third cooling device, and 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 first cooling device interfering with the second cooling device.

[0029] Furthermore, in the present invention, it is preferable that the second support frame and the third support frame are configured to swing in different directions to open and close, and that the first support frame is configured to swing in the same direction as the third support frame to open and close.

[0030] 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.

[0031] Furthermore, in the present invention, it is preferable that a spacing maintaining member is provided for maintaining a predetermined spacing between the first support frame and the third support frame.

[0032] According to this characteristic configuration, the distance between the first support frame and the third support frame is maintained at a predetermined distance by the distance maintaining member, thereby preventing the first cooling device and the third cooling device from coming into contact with each other. [Brief explanation of the drawings]

[0033] [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. [Figure 12] FIG. 10 is a plan view showing a distance maintaining member according to another embodiment. DETAILED DESCRIPTION OF THE INVENTION

[0034] 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."

[0035] [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.

[0036] 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.

[0037] 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.

[0038] 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.

[0039] 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.

[0040] 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.

[0041] 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.

[0042] 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.

[0043] 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.

[0044] [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.

[0045] 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.

[0046] 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.

[0047] 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.

[0048] 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.

[0049] 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.

[0050] 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.

[0051] 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.

[0052] 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.

[0053] 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.

[0054] [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.

[0055] The first support frame 28 is supported by the radiator frame 26 (front vertical frame 26B) via upper and lower first hinges 28a so as to be swingable about a first swing axis Z2 extending along the up-down direction. The first support frame 28 is configured to be swingable open and closed about the first swing axis Z2 between a closed position (see FIG. 6) in which the first oil cooler 21 is in an in-use orientation, and an open position (see FIG. 11) in which the first oil cooler 21 is open outward in the left-right direction of the aircraft. As will be described in detail later, a first locking mechanism 35 is provided which is switchable between a locked state in which the first support frame 28 is restricted from swinging from the open position to the closed position, and an unlocked state in which swing of the first support frame 28 is not restricted.

[0056] The first oil cooler 21 is detachably fixed to the first support frame 28 and the middle vertical frame 26C with bolts B1. 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). Upper and lower fixing portions 21a that are fixed to the first support frame 28 with the bolts B1 are provided at the front edge of the first oil cooler 21. Upper and lower fixing portions 21a that are fixed to the middle vertical frame 26C with the bolts B1 are provided at the rear edge of the first oil cooler 21.

[0057] 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 first 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 first 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).

[0058] 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 so as to be swingable about a second swing axis Z3 extending in the up-down direction. The second support frame 30 is configured to be swingable open and closed about the second 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 orientation, 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 vehicle. As will be described in detail later, a second locking mechanism 36 is provided which can be switched between a locked state in which the second support frame 30 is restricted from swinging from the open position to the closed position, and an unlocked state in which the swinging of the second support frame 30 is not restricted.

[0059] 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.

[0060] 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. That is, when the second support frame 30 is in the closed position, it is fixed by the detachable bolt B4.

[0061] 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 second 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 second 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 second swing axis Z3 on the side of the fuel cooler 24 where the second hinges 30a are located (the rear side in this embodiment).

[0062] 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 so as to be swingable about a third swing axis Z4 extending along the up-down direction. The third support frame 32 is configured to be swingable open and closed about the third swing axis Z4 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. As will be described in detail later, a third locking mechanism 37 is provided which is switchable between a locked state in which the third support frame 32 is restricted from swinging from the open position to the closed position, and a released state in which swing of the third support frame 32 is not restricted.

[0063] The second oil cooler 23 is detachably fixed to the third support frame 32 and the second support frame 30 with bolts B5. That is, when the third support frame 32 is in the closed position, it is fixed with detachable bolts B5 (specifically, the bolts B5 that fix the second oil cooler 23 to the second support frame 30). 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.

[0064] 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 third swing axis Z4. 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 third swing axis Z4 on the side of the second oil cooler 23 where the third hinge 32a is located (the front side in this embodiment).

[0065] 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.

[0066] 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.

[0067] 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.

[0068] [First locking mechanism] 4 and 6, the first locking mechanism 35 is provided in a portion of the first support frame 28 that is located on the first swing axis Z2 side. The first locking mechanism 35 includes a first locking pin 38, a first spring 39, and a first restricting portion 40.

[0069] The first lock pin 38 is supported by the front vertical frame 26B via a first stay 41. The first lock pin 38 is supported by the first stay 41 so as to be movable in a direction along the first swing axis Z2. The first lock pin 38 is biased downward by a first spring 39.

[0070] The first restricting portion 40 is configured to restrict movement of the first lock pin 38. The first restricting portion 40 is provided at the upper end of a portion of the first support frame 28 that is located on the first swing axis Z2 side. When the first support frame 28 is in the closed position, the lower end of the first lock pin 38 abuts against the upper surface of the first restricting portion 40 from above. As a result, downward movement of the first lock pin 38 is restricted by the first restricting portion 40. In other words, the first locking mechanism 35 is in a released state.

[0071] [Second locking mechanism] 4 and 7, the second locking mechanism 36 is provided in a portion of the second support frame 30 that is located on the second swing axis Z3 side. The second locking mechanism 36 includes a second locking pin 42, a second spring 43, and a second restricting portion 44.

[0072] The second lock pin 42 is supported by the rear vertical frame 26D via a second stay 45. The second lock pin 42 is supported by the second stay 45 so as to be movable in a direction along the second swing axis Z3. The second lock pin 42 is biased downward by a second spring 43.

[0073] The second restricting portion 44 is configured to restrict movement of the second lock pin 42. The second restricting portion 44 is provided at the upper end of a portion of the second support frame 30 that is located on the second swing axis Z3 side. When the second support frame 30 is in the closed position, the lower end of the second lock pin 42 abuts against the upper surface of the second restricting portion 44 from above. As a result, downward movement of the second lock pin 42 is restricted by the second restricting portion 44. In other words, the second locking mechanism 36 is in a released state.

[0074] [Third locking mechanism] 4 and 8, the third locking mechanism 37 is provided in a portion of the third support frame 32 that is located on the third swing axis Z4 side. The third locking mechanism 37 includes a third locking pin 46, a third spring 47, and a third restricting portion 48.

[0075] The third lock pin 46 is supported by the front vertical frame 26B via a third stay 49. The third lock pin 46 is supported by the third stay 49 so as to be movable in a direction along the third swing axis Z4. The third lock pin 46 is biased downward by a third spring 47.

[0076] The third restricting portion 48 is configured to restrict movement of the third lock pin 46. The third restricting portion 48 is provided at the upper end of a portion of the third support frame 32 that is located on the third swing axis Z4 side. When the third support frame 32 is located in the closed position, the lower end of the third lock pin 46 abuts against the upper surface of the third restricting portion 48 from above. As a result, downward movement of the third lock pin 46 is restricted by the third restricting portion 48. In other words, the third lock mechanism 37 is in a released state.

[0077] [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.

[0078] 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 third swing axis Z4, 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 third swing axis Z4.

[0079] Here, as the third support frame 32 swings toward the open position, the restriction on the movement of the third lock pin 46 by the third restricting portion 48 is released. That is, as the third support frame 32 swings toward the open position, the lower end of the third lock pin 46 disengages from the upper surface of the third restricting portion 48. Then, when the third support frame 32 is positioned in the open position, the restriction on the movement of the third lock pin 46 by the third restricting portion 48 is released, and the third lock pin 46 moves downward. That is, when the third support frame 32 is positioned in the open position, the third lock mechanism 37 switches from the released state to the locked state. As a result, even if the third support frame 32 attempts to swing toward the closed position around the third swing axis Z4, the third support frame 32 comes into contact with the third lock pin 46, preventing the swing. In this way, as the third support frame 32 swings toward the open position, the restriction on the downward movement of the third lock pin 46 by the third regulating portion 48 is released, causing the third lock pin 46 to move downward and restrict the swing of the third support frame 32 from the open position toward the closed position.

[0080] 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 second 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 second swing axis Z3.

[0081] In this way, the second support frame 30 can be moved to the open position by moving the third support frame 32 to the open position. The second support frame 30 and the third support frame 32 are configured to swing in different directions to open and close.

[0082] Here, as the second support frame 30 pivots toward the open position, the restriction on movement of the second lock pin 42 by the second restricting portion 44 is released. That is, as the second support frame 30 pivots toward the open position, the lower end of the second lock pin 42 disengages from the upper surface of the second restricting portion 44. Then, when the second support frame 30 is positioned in the open position, the restriction on movement of the second lock pin 42 by the second restricting portion 44 is released, and the second lock pin 42 moves downward. That is, when the second support frame 30 is positioned in the open position, the second lock mechanism 36 switches from the released state to the locked state. As a result, even if the second support frame 30 attempts to pivot toward the closed position around the second pivot axis Z3, the second restricting portion 44 comes into contact with the second lock pin 42, preventing the pivoting movement. In this way, as the second support frame 30 swings toward the open position, the restriction on the downward movement of the second lock pin 42 by the second regulating portion 44 is released, causing the second lock pin 42 to move downward and restrict the swing of the second support frame 30 from the open position toward the closed position.

[0083] 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 first 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 first swing axis Z2.

[0084] 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 is configured to swing in the same direction as the third support frame 32 to open and close.

[0085] Here, as the first support frame 28 pivots toward the open position, the restriction on movement of the first lock pin 38 by the first restricting portion 40 is released. That is, as the first support frame 28 pivots toward the open position, the lower end of the first lock pin 38 disengages from the upper surface of the first restricting portion 40. Then, when the first support frame 28 is positioned in the open position, the restriction on movement of the first lock pin 38 by the first restricting portion 40 is released, and the first lock pin 38 moves downward. That is, when the first support frame 28 is positioned in the open position, the first lock mechanism 35 switches from the released state to the locked state. As a result, even if the first support frame 28 attempts to pivot toward the closed position around the first pivot axis Z2, the first restricting portion 40 comes into contact with the first lock pin 38, preventing the pivoting movement. In this way, as the first support frame 28 swings toward the open position, the restriction on the downward movement of the first lock pin 38 by the first regulating part 40 is released, causing the first lock pin 38 to move downward and restrict the swing of the first support frame 28 from the open position toward the closed position.

[0086] [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. In other words, the “first cooling device” according to the present invention may be a cooling device other than the first oil cooler 21.

[0087] (2) In the above embodiment, the first locking mechanism 35 includes the first locking pin 38, the first spring 39, and the first restricting portion 40. However, the first locking mechanism 35 is not limited to the configuration described in the above embodiment. For example, the first locking mechanism 35 does not necessarily have to include the first spring 39.

[0088] (3) 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. In other words, the “second cooling device” according to the present invention may be a cooling device other than the condenser 22.

[0089] (4) In the above embodiment, the second locking mechanism 36 includes the second locking pin 42, the second spring 43, and the second restricting portion 44. However, the second locking mechanism 36 is not limited to the configuration described in the above embodiment. For example, the second locking mechanism 36 does not necessarily have to include the second spring 43.

[0090] (5) 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. In other words, the "third cooling device" according to the present invention may be a cooling device other than the second oil cooler 23.

[0091] (6) In the above embodiment, the third locking mechanism 37 includes the third locking pin 46, the third spring 47, and the third restricting portion 48. However, the third locking mechanism 37 is not limited to the configuration described in the above embodiment. For example, the third locking mechanism 37 does not necessarily have to include the third spring 47.

[0092] (7) In the above embodiment, the first swing axis Z2, the second swing axis Z3, and the third swing axis Z4 are axes extending in the up-down direction. However, the first swing axis Z2, the second swing axis Z3, and the third swing axis Z4 may be axes extending in the fore-and-aft direction of the aircraft body.

[0093] (8) In the above embodiment, the second support frame 30 and the third support frame 32 are configured to swing in different directions to open and close. However, the second support frame 30 and the third support frame 32 may be configured to swing in the same direction to open and close.

[0094] (9) In the above embodiment, the first support frame 28 is configured to swing open and close in the same direction as the third support frame 32. However, the first support frame 28 may be configured to swing open and close in a direction different from that of the third support frame 32.

[0095] (10) As shown in Fig. 12, in the above embodiment, a distance maintaining member 50 may be provided to maintain a predetermined distance between the first support frame 28 and the third support frame 32. The distance maintaining member 50 is provided on the first support frame 28. However, the distance maintaining member 50 may also be provided on the third support frame 32. When the first support frame 28 is swung from the closed position toward the open position, the distance maintaining member 50 presses the third support frame 32, thereby maintaining the predetermined distance between the first support frame 28 and the third support frame 32. [Industrial Applicability]

[0096] 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]

[0097] 20 Radiator 21 First oil cooler (first cooling device) 22 Condenser (secondary cooling device) 23 Second oil cooler (third cooling device) 28 First support frame 30 Second support frame 32 Third support frame 35 First locking mechanism 36 Second locking mechanism 37 Third locking mechanism 38 First lock pin 40 First Regulatory Department 42 Second lock pin 44 Second Regulatory Department 46 Third lock pin 48 Third Regulatory Department 50 Spacing maintaining member E-Engine Z2 First swing axis center Z3 Second swing axis Z4 Third swing axis

Claims

1. 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 first cooling device disposed outside the radiator in the left-right direction of the aircraft; a first support frame supporting the first cooling device; a second cooling device disposed outside the first cooling device in the left-right direction of the aircraft body; a second support frame 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, a first locking mechanism switchable between a first locking state that restricts the first support frame from swinging from the first open position toward the first closed position and a first release state that does not restrict the swinging of the first support frame, the first locking mechanism switches from the first release state to the first locking state when the first support frame is positioned at the first open position; 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 fixing device that fixes the second support frame to the second closed position; and a fixed portion to which the fixing device is fixed when the second support frame is in the second closed position, The fixed portion is provided on the first support frame of the harvester.

2. The harvester according to claim 1 , wherein the first locking mechanism is provided in a portion of the first support frame that is located on the first swing axis side.

3. the first locking mechanism includes a first locking pin that is movable in a direction along the first swing axis, and a first restricting portion that is provided on the first support frame and restricts movement of the first locking pin, A harvester as described in claim 2, wherein as the first support frame swings toward the first open position, the restriction on the movement of the first lock pin by the first regulating part is released, causing the first lock pin to move and restrict the swinging of the first support frame from the first open position toward the first closed position.

4. A second locking mechanism is provided which can be switched between a second locking state which restricts the second support frame from swinging from the second open position toward the second closed position, and a second release state which does not restrict the swinging of the second support frame, The harvester according to any one of claims 1 to 3, wherein the second locking mechanism switches from the second release state to the second locking state when the second support frame is positioned in the second open position.

5. The harvester according to claim 4, wherein the second locking mechanism is provided in a portion of the second support frame that is located on the second swing axis side.

6. the second lock mechanism includes a second lock pin that is movable in a direction along the second swing axis, and a second restriction portion that is provided on the second support frame and restricts movement of the second lock pin, A harvester as described in claim 5, wherein as the second support frame swings toward the second open position, the restriction on the movement of the second lock pin by the second regulating part is released, causing the second lock pin to move and restrict the swinging of the second support frame from the second open position toward the second closed position.

7. A water-cooled engine; a radiator disposed outside the engine in the left-right direction of the aircraft body and cooling cooling water for the engine; a first cooling device disposed outside the radiator in the left-right direction of the aircraft; a first support frame supporting the first cooling device; a second cooling device disposed outside the first cooling device in the left-right direction of the aircraft body; a second support frame for supporting the second cooling device; a third cooling device disposed outside the second cooling device in the left-right direction of the aircraft body; a third support frame for supporting the third 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, a first locking mechanism switchable between a first locking state that restricts the first support frame from swinging from the first open position toward the first closed position and a first release state that does not restrict the swinging of the first support frame, the first locking mechanism switches from the first release state to the first locking state when the first support frame is positioned at the first open position; 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 second locking mechanism switchable between a second locking state in which the second support frame is restricted from swinging from the second open position toward the second closed position and a second release state in which the swinging of the second support frame is not restricted, the second locking mechanism switches from the second release state to the second locking state when the second support frame is positioned at the second open position; 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 an attitude during use and a third open position in which the third cooling device is in an attitude opened outward in the left-right direction of the machine body, a third lock mechanism switchable between a third lock state in which the third support frame is restricted from swinging from the third open position toward the third closed position and a third release state in which the swing of the third support frame is not restricted, A harvester in which the third locking mechanism switches from the third release state to the third lock state when the third support frame is positioned in the third open position.

8. The harvester according to claim 7 , wherein the third locking mechanism is provided in a portion of the third support frame that is located on the third swing axis side.

9. the third lock mechanism includes a third lock pin that is movable in a direction along the third swing axis, and a third restriction portion that is provided on the third support frame and restricts movement of the third lock pin, A harvester as described in claim 8, wherein as the third support frame swings toward the third open position, the restriction on the movement of the third lock pin by the third regulating part is released, causing the third lock pin to move and restrict the swing of the third support frame from the third open position toward the third closed position.

10. the first cooling device, the second cooling device, and the third cooling device are arranged to overlap each other in a side view, 8. The harvester of claim 7, wherein the second support frame can be repositioned to the second open position by repositioning the third support frame to the third open position, and the first support frame can be repositioned to the first open position by repositioning the second support frame to the second open position.

11. the second support frame and the third support frame are configured to swing in different directions to open and close, The harvester according to claim 10, wherein the first support frame is configured to swing open and close in the same direction as the third support frame.

12. The harvester according to claim 11, further comprising a spacing maintaining member that maintains a predetermined spacing between the first support frame and the third support frame.

Images