Combine harvester

Abstract

To provide a combine harvester capable of adjusting the temperature in a cabin covering a steering part to a suitable temperature immediately before a worker gets on the steering part.SOLUTION: An outer periphery of a control section (5) is covered with a cabin (9), an air conditioner (40) for adjusting the temperature inside the cabin (9) is provided in the control section (5), a rear hatch (45) is provided on the upper wall of the cabin (9) and a window (46 L) is provided on the left wall, a remote control (60) is provided for remotely operating a controller (70) of the control section (5), and when a ventilation switch (65) of the remote control (60) is pressed, the air conditioner (40) operates for a preset time and the rear hatch (45) and the window (46 L) open for the preset time.SELECTED DRAWING: Figure 19

Description

[Technical Field]

[0001] The present invention relates to a combine harvester in which the control section is covered with a cabin. [Background technology]

[0002] To improve the working environment of the cockpit, a technique is known in which the cockpit is covered with a cabin and an air conditioning unit is installed above the cabin to prevent the temperature inside the cabin from rising (Patent Document 1).

[0003] Also, in order to facilitate harvesting work in the evening, a means is known in which a work light is provided on the upper front part of the cabin to illuminate the field (Patent Document 2). [Prior art documents] [Patent documents]

[0004] [Patent Document 1] Japanese Patent Application Laid-Open No. 2010-75112 [Patent Document 2] Japanese Patent Application Laid-Open No. 2011-223891 Summary of the Invention [Problem to be solved by the invention]

[0005] However, with the method described in Patent Document 1, the cooling device is stopped during breaks in harvesting work, so when harvesting work resumes, the worker has to board the control section, which is covered by a cabin with a high temperature, which could be harmful to his health.

[0006] Furthermore, with the solution of Patent Document 2, there is a risk that the cabin will shake significantly due to vibrations generated in the machine frame while traveling, causing the lighting direction of the work lights to fluctuate, reducing visibility.

[0007] Therefore, a main object of the present invention is to provide a combine harvester that can adjust the temperature inside the cabin that covers the control section to an appropriate temperature just before an operator gets into the control section.

[0008] Another object of the present invention is to provide a combine harvester in which the shaking of the cabin covering the control section is reduced. [Means for solving the problem]

[0009] The present invention, which has solved the above problems, is as follows. That is, the invention described in claim 1 is a combine harvester in which a traveling device (2) is provided below a machine frame (1) on which an engine (E) is mounted, a reaping device (3) for reaping stalks is provided in front of the machine frame (1), a threshing device (4) for threshing the stalks is provided on the rear left side of the reaping device (3), and a control unit (5) for an operator to ride on is provided on the rear right side of the reaping device (3), The combine harvester is characterized in that the outer periphery of the control section (5) is covered with a cabin (9), the control section (5) is provided with an air conditioning unit (40) for adjusting the temperature inside the cabin (9), a rear hatch (45) is provided on the upper wall of the cabin (9) and a window (46L) is provided on the left wall, a remote control (60) is provided for remotely operating a controller (70) of the control section (5), and when a ventilation switch (65) of the remote control (60) is pressed, the air conditioning unit (40) operates for a preset time period and the rear hatch (45) and the window (46L) are opened for the preset time period.

[0010] The invention described in claim 2 is a combine harvester described in claim 1, wherein the ventilation switch (65) is formed from a first switch (61) that exhausts cooled air into the cabin (9), a second switch (62) that exhausts room temperature air, and a third switch (63) that introduces outside air from outside the cabin (9) into the cabin (9).

[0011] The invention described in claim 3 is the combine described in claim 2, which increases or decreases the exhaust volume of the cooled air and room temperature air and the introduction volume of the cooled air and room temperature air based on the measurement value of a temperature sensor (9S) that measures the temperature inside the cabin (9).

[0012] The invention described in claim 4 is the combine harvester described in any one of claims 1 to 3, wherein, when the set time has elapsed, the operation of the air conditioning device (40) is stopped and the rear hatch (45) and the window (46L) are closed.

[0013] The invention described in claim 5 is the combine described in claim 4, in which, when the operation of the air conditioning device (40) is stopped and the rear hatch (45) and the window (46L) are closed, the internal air inside the cabin (9) is circulated into the cabin (9).

[0014] The invention of claim 6 is the combine harvester of claim 1, wherein when the ventilation switch (65) is pressed, a lower part of the step (50) used to raise and lower the operating section (5) moves upward.

[0015] The invention described in claim 7 is the combine harvester described in claim 6, in which a warning lamp (56) is provided on the upper part of the reaping device (3), and if the lower part of the step (50) moves downward within the set time, the warning lamp (56) is made to flash.

[0016] The invention described in claim 8 is a vehicle in which, in a plan view, the frame (10) of the cabin (9) is formed of a left frame (11) arranged on the left side, a right frame (12) arranged on the right side, a first connecting frame (13) connecting front parts of the left frame (11) and the right frame (12), and a second connecting frame (14) connecting rear parts of the left frame (11) and the right frame (12), and, in a side view, the left frame (11) is formed of a left vertical frame (15) extending in the vertical direction and a left front-rear frame (16) extending in the front-rear direction, and a first support part (30) provided on the aircraft frame (1) and the first connecting frame (13) are connected to a pair of second frames spaced a predetermined distance apart in the left-right direction. The combine harvester of claim 1 is configured such that the first and second support parts (35) provided on the body frame (1) and the left front and rear frame (16) are connected via a first vibration-isolating member (31), the second support part (35) provided on the body frame (1) and the left front and rear frame (16) are connected via a second vibration-isolating member (37), and the third support part (38) provided on the body frame (1) and the second connecting frame (14) are connected via a pair of left and right third vibration-isolating members (39) spaced a predetermined distance apart in the left-right direction, and in a plan view, the second vibration-isolating member (37) is positioned rearward of the first support part (30) and forward of the third vibration-isolating member (39) in the front-back direction, and the second vibration-isolating member (37) is positioned to the left of the first support part (30) and the third vibration-isolating member (39) in the left-right direction.

[0017] The invention described in claim 9 is a combine described in claim 8, in which, when viewed from the side, the second vibration-damping member (37) is positioned above the first vibration-damping member (31) and below the third vibration-damping member (39).

[0018] The invention described in claim 10 is a combine described in claim 9, in which, when viewed from the side, the second vibration-damping member (37) is arranged on an imaginary line connecting the first vibration-damping member (31) and the third vibration-damping member (39).

[0019] The invention of claim 11 is the combine of claim 10, wherein the second vibration-isolating member (37) and the third vibration-isolating member (39) are larger than the first vibration-isolating member (31).

[0020] The invention of claim 12 is the combine harvester of claim 11, wherein the interval between the third vibration-isolating members (39) in the left-right direction is wider than the interval between the first vibration-isolating members (31) in the left-right direction.

[0021] The invention described in claim 13 is a combine described in any one of claims 8 to 12, in which a transmission (36) that increases or decreases the output rotation of the engine (E) is provided on the body frame (1), and the lower part of the second support part (35) is connected to the upper part of the transmission (36). [Effects of the Invention]

[0022] According to the invention of claim 1, the outer periphery of the control section (5) is covered with a cabin (9), the control section (5) is provided with an air conditioner (40) for adjusting the temperature inside the cabin (9), a rear hatch (45) is provided on the upper wall of the cabin (9) and a window (46L) is provided on the left wall, a remote control (60) is provided for remotely operating a controller (70) of the control section (5), and when a ventilation switch (65) of the remote control (60) is pressed, the air conditioner (40) operates for a preset set time and the rear hatch (45) and the window (46L) are opened for the set time, so that the temperature inside the cabin (9) can be made comfortable before an operator gets into the control section (5).

[0023] According to the invention of claim 2, in addition to the effect of the invention of claim 1, the ventilation switch (65) is formed by the first switch (61) for exhausting cooled air into the cabin (9), the second switch (62) for exhausting room temperature air, and the third switch (63) for introducing outside air from outside the cabin (9) into the cabin (9), so that the temperature inside the cabin (9) can be quickly made comfortable.

[0024] According to the invention of claim 3, in addition to the effect of the invention of claim 2, the exhaust amount and the introduction amount of cooled air and room temperature air are increased or decreased based on the measurement value of the temperature sensor (9S) that measures the temperature inside the cabin (9), so that the temperature inside the cabin (9) can be made comfortable more quickly.

[0025] According to the invention of claim 4, in addition to the effect of the invention of any one of claims 1 to 3, when a set time has elapsed, the air conditioner (40) stops operating and the rear hatch (45) and the window (46L) close, so that the temperature inside the cabin (9) can be maintained at a comfortable temperature.

[0026] According to the invention of claim 5, in addition to the effect of the invention of claim 4, when the driving of the air conditioner (40) is stopped and the rear hatch (45) and the window (46L) are closed, the inside air of the cabin (9) is circulated into the cabin (9), so that the temperature inside the cabin (9) can be made uniform.

[0027] According to the invention of claim 6, in addition to the effect of the invention of claim 1, when the ventilation switch (65) is pressed, the lower part of the step (50) used to raise and lower the control section (5) moves upward, thereby preventing suspicious persons without permission from the operator from boarding the control section (5).

[0028] According to the invention of claim 7, in addition to the effect of the invention of claim 6, a warning lamp (56) is provided on the upper part of the reaping device (3), and if the lower part of the step (50) moves downward within a set time, the warning lamp (56) flashes, thereby quickly notifying workers working around the combine of the presence of a suspicious person.

[0029] According to the invention of claim 8, in addition to the effect of the invention of claim 1, in plan view, the frame (10) of the cabin (9) is formed of a left frame (11) arranged on the left side, a right frame (12) arranged on the right side, a first connecting frame (13) connecting front parts of the left frame (11) and the right frame (12), and a second connecting frame (14) connecting rear parts of the left frame (11) and the right frame (12), and in side view, the left frame (11) is formed of a left vertical frame (15) extending in the vertical direction and a left front-rear frame (16) extending in the front-rear direction, and the first support part (30) provided on the aircraft frame (1) and the first connecting frame (13) are connected via a pair of first vibration-isolating members (31) spaced a predetermined distance apart in the left-right direction, and the aircraft frame The second support part (35) provided on the vehicle frame (1) and the left front and rear frame (16) are connected via the second vibration-isolating member (37), and the third support part (38) provided on the vehicle frame (1) and the second connecting frame (14) are connected via a pair of left and right third vibration-isolating members (39) spaced a predetermined distance apart in the left-right direction. In a plan view, the second vibration-isolating member (37) is arranged rearward of the first support part (30) and forward of the third vibration-isolating member (39) in the front-back direction, and the second vibration-isolating member (37) is arranged leftward of the first support part (30) and the third vibration-isolating member (39) in the left-right direction. Therefore, vibrations generated in the vehicle frame (1) during travel can be prevented from being transmitted to the frame (10) via the first to third support parts (30, 35, 38), thereby suppressing shaking of the cabin (9).

[0030] According to the invention of claim 9, in addition to the effect of the invention of claim 8, the second vibration-isolating member (37) is arranged above the first vibration-isolating member (31) and below the third vibration-isolating member (39) in side view, so that the shaking of the cabin (9) can be further suppressed.

[0031] According to the invention described in claim 10, in addition to the effect of the invention described in claim 9, when viewed from the side, the second vibration-damping member (37) is positioned on the imaginary line connecting the first vibration-damping member (31) and the third vibration-damping member (39), so that the shaking of the cabin (9) can be further suppressed and vibrations transmitted to the frame (10) can also be quickly damped.

[0032] According to the invention described in claim 11, in addition to the effect of the invention described in claim 10, the second vibration-damping member (37) and the third vibration-damping member (39) are made larger than the first vibration-damping member (31), so that vibrations of the left front and rear frame (16) and the second connecting frame (14), which have a larger amplitude than the first connecting frame (13), can be efficiently suppressed.

[0033] According to the invention described in claim 12, in addition to the effect of the invention described in claim 11, the left-right spacing of the third vibration-damping member (39) is wider than the left-right spacing of the first vibration-damping member (31), so that vibration of the second connecting frame (14) can be more efficiently suppressed.

[0034] According to the invention of claim 13, in addition to the effect of the invention of any one of claims 8 to 12, a transmission (36) that increases or decreases the output rotation of the engine (E) is provided on the body frame (1), and the lower part of the second support part (35) is connected to the upper part of the transmission (36), so that the rigidity of the second support part (35) can be increased and deformation of the second support part (35) can be prevented. [Brief explanation of the drawings]

[0035] [Figure 1] FIG. [Figure 2] FIG. [Figure 3] This is an oblique view of the cabin frame covering the control panel, viewed from the front right. [Figure 4] FIG. 10 is a left side view of the cabin frame. [Figure 5] FIG. 10 is a right side view of the cabin frame. [Figure 6] FIG. 2 is a front view of the cabin frame. [Figure 7] FIG. 2 is a plan view of the cabin taken in cross section in the left-right direction. [Figure 8] FIG. [Figure 9] FIG. [Figure 10] FIG. [Figure 11] FIG. 2 is a longitudinal cross-sectional view of the steering section in the front-to-rear direction. [Figure 12] FIG. 2 is a cross-sectional view of the steering section taken in the longitudinal direction. [Figure 13] This is a perspective view of the cabin with the rear hatch open, viewed from the right rear. [Figure 14] FIG. 10 is a perspective view of the step in use, seen from the right rear. [Figure 15] FIG. 10 is a perspective view of the step in the stored state as seen from the right rear. [Figure 16] FIG. 1 is a perspective view of a combine harvester having a warning lamp provided on the top of the harvesting device, viewed from the left front. [Figure 17] FIG. 2 is a plan view of the operation surface of a remote controller for remote operation. [Figure 18] FIG. 2 is a connection diagram of a controller. [Figure 19] This is a method of ventilation for the cockpit, which is covered by a cabin. [Figure 20] FIG. 2 is an explanatory diagram of an operating lever and a transmission. [Figure 21] FIG. 2 is a longitudinal cross-sectional view of the transmission in the left-right direction. [Figure 22] FIG. 2 is an explanatory diagram of a parking brake and a transmission. [Figure 23] FIG. 2 is a perspective view of the exhaust purification device as seen from the right rear. [Figure 24] FIG. 2 is a plan view illustrating an exhaust pipe connected to the exhaust purification device. [Figure 25] FIG. 4 is a rear view illustrating the urea tank. [Figure 26] FIG. 4 is a right side view illustrating the urea tank. DETAILED DESCRIPTION OF THE INVENTION

[0036] As shown in Figures 1 and 2, a combine harvester has a traveling device 2 consisting of a pair of left and right crawlers that travels on the soil surface mounted on the underside of a body frame 1, a reaping device 3 that harvests stalks in the field mounted on the front side of the body frame 1, a threshing device 4 that threshers and sorts the harvested stalks mounted on the rear left side of the reaping device 3, and a control unit 5 on which an operator rides mounted on the rear right side of the reaping device 3.

[0037] An engine room 6 that houses an engine E is provided below the control unit 5, a grain tank 7 that stores threshed and sorted grain is provided behind the control unit 5, and a discharge auger 8 that discharges grain to the outside and is made up of a vertical discharge section 8A that extends vertically and a horizontal discharge section 8B that extends longitudinally. The control unit 5 is also covered by a cabin 9 that has a light on top for illumination.

[0038] As shown in Figure 3, the frame 10 that forms the cabin 9 is made up of a left frame 11, a right frame 12, a rectangular connecting frame (referred to as the "first connecting frame" in the claims) 13 that connects the front parts of the left frame 11 and the right frame 12, and a plurality of connecting frames (referred to as the "second connecting frames" in the claims) 14 that extend in the left-right direction and connect the rear parts of the left frame 11 and the right frame 12.

[0039] 4, the left frame 11 is formed of left upper and lower frames 15A to 15D extending in the up-down direction and left front and rear frames 16A to 16E extending in the front-rear direction. In this specification, the left upper and lower frames 15A to 15D are collectively referred to as left upper and lower frames 15, and the left front and rear frames 16A to 16E are collectively referred to as left front and rear frames 16.

[0040] The left front-rear frame 16A is connected to the upper portions of the left vertical frame 15A and the left vertical frame 15D, and its front portion extends forward beyond the left vertical frame 15A. The left front-rear frame 16B is connected to the upper portions of the left vertical frame 15A and the left vertical frame 15C. The left front-rear frame 16C is connected to the middle portion of the left vertical frame 15A and the lower portions of the left vertical frame 15C and the left vertical frame 15D. The left front-rear frame 16D is connected to the middle portion of the lower portion of the left vertical frame 15A and the middle portion of the left vertical frame 15B, and extends rearward beyond the left vertical frame 15B. The left front-rear frame 16E is connected to the lower portions of the left vertical frame 15A and the left vertical frame 15B, and its front portion extends forward beyond the left vertical frame 15A and its rear portion extends rearward beyond the left vertical frame 15B. This increases the rigidity of the left frame 11, thereby suppressing deformation of the left frame 11.

[0041] 5, the right frame 12 is formed from upper right and lower frames 17A to 17C extending in the up-down direction, right front and rear frames 18A, 18B extending in the front-rear direction, and a right curved frame 19 connecting the lower part of the upper right and lower frame 17C to the rear part of the right front and rear frame 18B. In this specification, the upper right and lower frames 17A to 17C are collectively referred to as the upper right and lower frame 17, and the right front and rear frames 18A, 18B are collectively referred to as the right front and rear frame 18.

[0042] The right front and rear frame 18A is connected to the upper right and lower frame 17A, the upper right and lower frame 17B, and the upper part of the upper right and lower frame, and its front part extends further forward than the upper right and lower frame 17A. The right front and rear frame 18B is connected to the lower part of the upper right and lower frame 17A and the right curved frame 19. In addition, the upper right and lower frame 17B is connected to the front part of the rear side of the right front and rear frame 18A and the right curved frame 19. This increases the rigidity of the right frame 12, making it possible to suppress deformation of the right frame 12.

[0043] 3 to 5, the left connecting frame 13L extending in the front-rear direction of the connecting frame 13 is connected to the lower parts of the left upper and lower frames 15A and 15B. The right connecting frame 13R extending in the front-rear direction of the connecting frame 13 is connected to the lower parts of the right lower and right frame 17A and the right curved frame 19. In addition, the connecting frame 14 is connected to the rear of the left front-rear frame 16C and the right curved frame 19. This firmly connects the left frame 11 and the right frame 12, increasing the rigidity of the frame 10 and making it possible to suppress deformation of the frame 10.

[0044] The top of a rectangular parallelepiped storage box 20 with an open top is fixed to the inner periphery of the connecting frame 13. A battery 20A, a pump 20B, etc. are stored in the storage space of the storage box 20, and an opening formed in the right wall of the storage box 20 is fitted with a staircase-like step (not shown) that workers can use when ascending and descending.

[0045] A partition member 21 that separates the cockpit 5 from the engine room 6 is provided at the rear of the frame 10. A support member 22 that supports the cockpit used by the operator is provided at the front of the partition member 21, and a convex portion 23 is formed at the left side of the partition member 21 by bending the partition member 21 upward and opening the left side and bottom. This allows the front portion of an exhaust purification device (DPF) that purifies impurities contained in the exhaust gas emitted from the engine E to be inserted into the convex portion 23.

[0046] The partition member 21 is formed of a portion 21A extending upward from its lower end portion detachably fixed to the rear portion of the connecting frame 13, a portion 21B extending upward and rearward from the upper end portion of portion 21A, a portion 21C extending gently upward and rearward from the upper end portion of portion 21B, a portion 21D extending upward from the upper end portion of portion 21C, and a portion 21E extending upward and rearward from the upper end portion of portion 21D. The rear end portion of portion 21E is detachably fixed to the connecting frame 14.

[0047] As shown in Figure 6, the left upper and lower frame 15A extends upward from its lower end connected to the connecting frame 13, then curves upward to the left, then curves upward again, and then extends upward again. Similarly, the left upper and lower frame 15B extends upward from its lower end, then curves upward to the left, then curves upward again, and then extends upward again. This allows a large space to be created to the left of the pilot's seat of the control unit 5, reducing stress on the operator caused by a small space. In addition, the right upper and lower frame 17A extends upward from its lower end connected to the connecting frame 13.

[0048] The left frame 11 is provided with a plate-shaped left wall 25, which is formed from a portion 25A extending downward along the left frame 11, a portion 25B extending downward to the right from the lower end of portion 25A, and a portion 25C extending downward from the lower end of portion 25B.

[0049] A left window (referred to as a "window" in claims) 46L is provided in a rectangular opening formed in the upper part of the portion 25A, and the lower end of the portion 25C abuts against the connecting frame 13. In addition, a plate-shaped cover member 26 extending upward and leftward from the upper surface of the connecting frame 13 is provided at the lower part of the portion 25A, the portion 25B, and the portion opposite the portion 25C.

[0050] The right frame 12 is provided with a plate-shaped right wall 27, and a rectangular opening formed in the upper part of the right wall 27 is provided with a right window 46R.

[0051] 7 to 10, a support portion (referred to as a "first support portion" in the claims) 30 provided at the front of the vehicle frame 1 is provided below the front connecting frame 13A of the connecting frame 13. The support portion 30 is made up of left and right support members 30A extending in the left-right direction and located below the front connecting frame 13A, left upper and lower support members 30L extending from the left portions of the left and right support members 30A to the vehicle frame 1, and right and lower support members 30R extending from the right portions of the left and right support members 30A to the vehicle frame 1. The support portion 30 is provided forward of the output shaft 36A of the transmission 36.

[0052] The lower surface of the front connecting frame 13A and the upper surfaces of the left and right support members 30A are connected via a pair of left and right vibration-isolating members 31, such as vibration-isolating rubber or shock absorbers, which are provided at a predetermined interval in the left-right direction ("first anti-glare members" in the claims). This makes it possible to suppress vibrations generated in the vehicle frame 1 during travel, etc., from being transmitted to the front connecting frame 13A via the left and right support members 30A, thereby suppressing shaking of the cabin 9.

[0053] Additionally, an oil filter 33 is attached to the middle portion of the lower surface of the left and right support members 30A to remove impurities from the oil supplied to the hydraulic continuously variable transmission 32 that increases or decreases the output rotation of the engine E. This makes it easy to arrange a flexible hose that connects the continuously variable transmission 32 and the oil filter 33.

[0054] A support portion (a "second support portion" in the claims) 35 is provided on the front of the vehicle frame 1 below the left front-rear frame 16D. The support portion 35 is formed of a front-rear support member 35A that is disposed on the lower side of the left front-rear frame 16D and extends in the front-rear direction, a front vertical support member 35F that extends from the front of the front-rear support member 35A to a transmission 36 that increases or decreases the output rotation of the continuously variable transmission 32 that is disposed on the front of the vehicle frame 1, and a rear vertical support member 35B that extends from the rear of the front-rear support member 35A to the transmission 36. This shortens the lengths of the front vertical support member 35F and the rear vertical support member 35B, thereby increasing the rigidity of the support portion 35 and preventing deformation of the support portion 35.

[0055] The lower surface of the left front-rear frame 16D and the upper surface of the front-rear support member 35A are connected via a vibration-isolating member such as a vibration-isolating rubber or a shock absorber (referred to as a "second vibration-isolating member" in the claims) 37. This prevents vibrations generated in the vehicle frame 1 during travel, etc., from being transmitted to the left front-rear frame 16D via the front-rear support member 35A, thereby suppressing shaking of the cabin 9.

[0056] A support portion (referred to as a "third support portion" in the claims) 38 is provided below the connecting frame 14, at the rear of the front side of the vehicle frame 1. The support portion 38 is formed of left and right support members 38A extending in the left-right direction and arranged below the connecting frame 14, a left upper and lower support member 38L extending from the left portion of the left and right support member 38A to the vehicle frame 1, and a right and lower support member 38R extending from the right portion of the left and right support member 38A to the vehicle frame 1. Furthermore, left and right reinforcing members 38D extending in the left-right direction are provided at the lower portions of the upper sides of the left upper and lower support member 38L and the right and lower support member 38R. This increases the rigidity of the support portion 38, making it possible to prevent deformation of the support portion 38.

[0057] The lower surface of the connecting frame 14 and the upper surfaces of the left and right support members 38A are connected via a pair of left and right vibration-isolating members 39, such as vibration-isolating rubber or shock absorbers, which are provided at a predetermined interval in the left-right direction (the "third vibration-isolating members" in the claims). This makes it possible to suppress vibrations generated in the aircraft frame 1 during travel, etc., from being transmitted to the connecting frame 14 via the left and right support members 38A, thereby suppressing shaking of the cabin 9.

[0058] In a plan view, vibration-isolating member 31, vibration-isolating member 37, and vibration-isolating member 39 are provided in this order from the front. Vibration-isolating member 37 is provided to the left of vibration-isolating members 31 and 39, and is located in the center of the transmission 36 in the left-right direction. Vibration-isolating member 39 is offset to the left of vibration-isolating member 31, i.e., the left-side vibration-isolating member 39 is provided to the left of the left-side vibration-isolating member 31, and the right-side vibration-isolating member 39 is provided to the left of the right-side vibration-isolating member 31. In addition, the distance between the left-side vibration-isolating member 39 and the right-side vibration-isolating member 39 is wider than the distance between the left-side vibration-isolating member 31 and the right-side vibration-isolating member 31.

[0059] It is preferable that vibration-isolating members 37 and 39 use vibration-isolating rubber that is larger than that of vibration-isolating member 31. This makes it possible to suppress vibrations of left front / rear frame 16D and connecting frame 14, which have larger amplitudes due to vibrations in the front / rear and left / right directions than the front connecting frame 13A.

[0060] In a side view, vibration-isolating member 31 is provided above transmission 36, vibration-isolating member 37 is provided above vibration-isolating member 31, and vibration-isolating member 39 is provided above vibration-isolating member 37. Vibration-isolating member 37 is preferably provided so as to be positioned on an imaginary line connecting vibration-isolating member 31 and vibration-isolating member 39. This makes it possible to further suppress vibrations generated in vehicle frame 1 during travel, etc., from being transmitted to frame 10 via left and right support members 30A, front and rear support members 35A, and left and right support members 38A, thereby further suppressing shaking of cabin 9 and also enabling vibrations transmitted to frame 10 to be quickly damped.

[0061] 11 and 12, an air conditioner 40 is mounted on the underside of the upper wall 28 of the cabin 9. Cooling air discharged from the air conditioner 40 passes through a front duct 41A and is then blown into the cabin 9 from an exhaust port provided in the front duct 41A. This allows the interior of the cabin 9 to be cooled efficiently. In addition, the cooling air discharged from the air conditioner 40 passes through a rear duct 41B and is then blown into a refrigerator 43 provided on the left rear side of the cockpit 42 for storing cooled drinking water and the like.

[0062] The air conditioner 40 is formed by an evaporator through which refrigerant atomized by an expansion valve 40A circulates, and a blower fan 40B that exhausts the air cooled by the evaporator to a front duct 41A or the like.

[0063] When the A / C switch 61 on the remote control 60 for remote operation, which will be described later, is pressed, the expansion valve 40A and the blower fan 40B are driven and cooled cooling air is exhausted into the front duct 41A, etc., and when the A / C switch 61 is released, the expansion valve 40A and the blower fan 40B are stopped from being driven and the exhaust of cooled air into the front duct 41A, etc. is stopped.

[0064] When the blower switch 62 on the remote control 60 is pressed, the expansion valve 40A is not driven and only the blower fan 40B is driven to exhaust room temperature air to the front duct 41A, etc., and when the blower switch 62 is released, the blower fan 40B stops driving and the exhaust of room temperature air to the front duct 41A, etc. is stopped.

[0065] 13, a rear hatch 45 is provided at the rear of the upper wall 28 of the cabin 9. The front part of the rear hatch 45 is rotatably fixed to a support shaft extending in the left-right direction and the rear part of the rear hatch 45 is vertically movable. A left window 46L is provided at the top of the left wall 25 of the cabin 9. The upper part of the left wall 25 of the cabin 9 is rotatably fixed to a support shaft extending in the front-rear direction and the lower part of the rear hatch 45 is horizontally movable. A right window 46R is provided at the top of the right wall 27 of the cabin 9 and is movable in the front-rear direction.

[0066] When the left window opening / closing switch 66 on the remote control 60 is pressed, an opening / closing device 66A such as a motor is driven to rotate the lower part of the left window 46L upward, thereby opening the left window 46L, and when the left window opening / closing switch 66 is released, the opening / closing device 66A is driven to rotate the lower part of the left window 46L downward, thereby closing the left window 46L.

[0067] When the rear hatch opening / closing switch 67 on the remote control 60 is pressed, an opening / closing device 67A such as a motor is driven to rotate the lower part of the rear hatch 45 upward, thereby opening the rear hatch 45, and when the rear hatch opening / closing switch 67 is released, the opening / closing device 67A is driven to rotate the lower part of the rear hatch 45 downward, thereby closing the rear hatch 45.

[0068] An outside air intake port (not shown) is formed on the front lower side of the windshield of the cabin 9 to introduce outside air from outside the cabin 9 into the cabin 9, and an inside air intake port (not shown) is formed on the rear lower side of the windshield to circulate inside air from inside the cabin 9 into the cabin 9. In addition, an exhaust port (not shown) is formed on the underside of the rear hatch 45 of the rear wall 29 of the cabin 9 to exhaust cooling air and the like blown into the cabin 9 via the front duct 46A or the like to the outside of the cabin 9.

[0069] When the outside air introduction switch 63 on the remote control 60 is pressed, an opening device 63A such as a motor is driven to open the outside air intake port and introduce outside air into the cabin 9, and when the outside air introduction switch 63 is released, the opening device 63A is driven to close the outside air intake port and stop the introduction of outside air into the cabin 9.

[0070] When the inside air circulation switch 64 on the remote control 60 is pressed, an opening device 64A such as a motor is driven to open the inside air intake port and circulate the inside air inside the cabin 9, and when the inside air circulation switch 64 is released, the opening device 64A is driven to close the inside air intake port and stop the circulation of the inside air inside the cabin 9.

[0071] As shown in Figure 14, a step 50 is provided on the right side of the control unit 5, which is used by an operator when getting on and off the control unit 5. The step 50 is made up of, from the bottom up, a lower step 50A, a middle step 50B, and an upper step 50C.

[0072] The front and rear portions of the upper step 50C are fixed to vertical support members 51, which extend downward and have their upper portions fixed at a predetermined distance in the front-to-rear direction to the right front-to-rear frame 18B that forms the cabin 9. In addition, the lower portions of the vertical support members 51 are connected to front-to-rear connecting members 52 in the front-to-rear direction.

[0073] The front and rear portions of the intermediate step 50B are fixed to vertical support members 53, which extend downward and have their upper portions fixed to vertical connecting members 52 at a predetermined distance in the front-rear direction.

[0074] The front and rear portions of the lower step 50A are rotatably fixed to pins 53A extending in the front-rear direction and provided at the bottom of the upper and lower support members 53. In addition, a rod 54 extending in the up-down direction is provided at the front portion of the lower step 50A.

[0075] As shown in Figure 15, when the step up / down switch 68 on the remote control 60 is pressed, a lifting device 68A such as a motor is driven to move the rod 54 upward, causing the lower part of the lower step 50A to rotate upward, and when the step up / down switch 68 is released, the lifting device 68A is driven to move the rod 54 downward, causing the lower part of the lower step 50A to rotate downward.

[0076] In this specification, the A / C switch 61, the air blower switch 62, and the outside air intake switch 63 are collectively referred to as the ventilation switch 65. When the ventilation switch 65 is pressed, for a predetermined time after the switch is pressed, the left window opening / closing switch 66, the rear hatch opening / closing switch 67, and the step lifting / lowering switch 68 are operated, regardless of whether they are pressed, to drive the opening / closing device 66A to open the left window 46L, the opening / closing device 67A to open the rear hatch 45, and the lifting / lowering device 68A to rotate the lower part of the lower step 50A upward via the rod 54.

[0077] As shown in Figure 16, warning lamps 56 are provided on the top of the reaping device 3 to alert the operator to abnormalities. Warning lamps 56 are made up of left warning lamp 56A provided on the top left of the reaping device 3, left front warning lamp 56B provided on the top left of the front of the reaping device 3, right front warning lamp 56C provided on the top right of the front of the reaping device 3, and right warning lamp 56D provided on the top right of the reaping device 3.

[0078] If there is an abnormality in the combine harvester, for example, if the lower part of the lower step 50A rotates downward even though the A / C switch 61 on the remote control 60 is pressed, the warning lamp 56 flashes. This prevents suspicious people from getting into the combine harvester's control unit 5 in the gap where the operator leaves the combine harvester to lower the temperature inside the cabin 9 before getting into the control unit 5.

[0079] 17, the left part of the operation surface of the remote control 60 is provided with an A / C switch 61 for exhausting cooled air into the cabin 9, an air blower switch 62 for exhausting room-temperature air into the cabin 9, an outside air intake switch 63 for introducing outside air from outside the cabin 9 into the cabin 9, and an inside air circulation switch 64 for circulating inside air inside the cabin 9 within the cabin 9. In addition, the right part of the operation surface is provided with a left window opening / closing switch 66 for opening the left window 46L, a rear hatch opening / closing switch 67 for opening the rear hatch 45, and a step up / down switch 68 for rotating the lower part of the lower step 50A of the step 50 upward.

[0080] As shown in FIG. 18, the combine controller 70 is composed of a processing unit 71 including a CPU or the like, a storage unit 72 including a ROM, a RAM, a hard disk drive, a flash memory, or the like, a timer 73 for measuring processing time, and a communication unit 74 for transmitting and receiving signals to and from the remote control 60.

[0081] The input side of the controller 70 is connected via a predetermined input interface circuit to a temperature sensor 9S that measures the temperature inside the cabin 9, an angle sensor 45S that measures the rotation of the rear hatch 45, an angle sensor 46S that measures the rotation of the left window 46L, an angle sensor 50S that measures the rotation of the lower step 50A, and a remote control 60 for remote operation.

[0082] The output side of the controller 70 is connected via a predetermined output interface circuit to an expansion valve 40A that atomizes the refrigerant of the air conditioning unit 40, a blower fan 40B that exhausts the cooled air cooled by the evaporator into the front duct 41A, etc., a warning lamp 56 that prevents suspicious persons from boarding the combine, an opening device 63A that opens the air intake for outside air, an opening device 64A that opens the air intake for inside air, an opening / closing device 66A that opens the left window 46L, an opening / closing device 67A that opens the rear hatch 45, and a lifting device 68A that rotates the lower part of the lower step 50A upward.

[0083] 19, in step S1, the processing unit 71 of the controller 70 determines whether or not the ventilation switch 65 of the remote control 60, that is, the A / C switch (the "first switch" in the claims) 61, the air blower switch (the "second switch" in the claims) 62, and the outside air introduction switch (the "third switch" in the claims) 63, have been pressed. If it is determined that the ventilation switch 65 has been pressed, the process proceeds to step S2, and if it is determined that the ventilation switch 65 has not been pressed, step S1 is repeated.

[0084] In step S2, the processing unit 71 drives the opening / closing device 67A to open the rear hatch 45, drives the opening / closing device 66A to open the left window 46L, and then proceeds to step S3.

[0085] In step S3, if the processing unit 71 determines that the A / C switch 61 is pressed, it drives the expansion valve 40A and blower fan 40B of the air conditioner 40 to blow cooled air into the cabin 9; if the processing unit 71 determines that the blower switch 62 is pressed, it drives only the blower fan 40B of the air conditioner 40 to blow room-temperature air into the cabin 9; and if the processing unit 71 determines that the outside air introduction switch 63 is pressed, it drives the opening device 63A to introduce outside air into the cabin 9, and then proceeds to step S4. Note that the processing unit 71 can individually blow cooled air, blow room-temperature air, and introduce outside air, but it can also simultaneously blow cooled air and introduce outside air, or simultaneously blow room-temperature air and introduce outside air. This allows the operator to lower the temperature inside the cabin 9 before boarding the control unit 5.

[0086] Furthermore, it is preferable to increase or decrease the amount of cooling air blown, the amount of room temperature air blown, and the amount of outside air introduced depending on the temperature difference between the temperature inside the cabin 9 measured by the temperature sensor 9S and a preset set temperature. In other words, it is preferable to increase the amount of cooling air blown when the temperature difference between the temperature inside the cabin 9 and the set temperature is large, and decrease the amount of cooling air blown when the temperature difference between the temperature inside the cabin 9 and the set temperature is small. This allows the temperature inside the cabin 9 to be cooled quickly.

[0087] In step S4, the processing unit 71 drives the lifting device 68A to rotate the lower part of the lower step 50A of the step 50 upward, and then proceeds to step S5. This inhibits boarding the control unit 5 using the step 50, and makes it possible to prevent suspicious persons who have not been given boarding permission by the operator from boarding the control unit 5.

[0088] In step S5, the processing unit 71 determines whether or not a suspicious person is using the step 50 to board the control unit 5 based on the measurement value of the angle sensor 50S. If it determines that a suspicious person is using the step 50, the processing unit 71 proceeds to step S6, and if it determines that a suspicious person is not using the step 50, the processing unit 71 proceeds to step S7. Note that in this embodiment, the angle sensor 50S that measures the rotation of the lower step 50A is used, but this can also be replaced with a human presence sensor or the like.

[0089] In step S6, the processing unit 71 causes the warning lamp 56 provided on the top of the reaping device 3 to flash, and then proceeds to step S7. This allows the operator to be promptly notified that a suspicious person is attempting to board the control unit 5. Note that the warning lamp 56 is made up of a left warning lamp 56A, a left front warning lamp 56B, a right front warning lamp 56C, and a right warning lamp 56D so that operators around the combine can easily recognize it.

[0090] In step S7, the processing unit 71 determines whether the drive time of the expansion valve 40A, etc. measured by the timer 73 is longer than a preset time. If it is determined that the drive time of the expansion valve 40A, etc. is longer than the set time, the process proceeds to step S8, and if it is determined that the drive time of the expansion valve 40A, etc. is not longer than the set time, the process returns to step S2.

[0091] In step S8, the processing unit 71 stops the driving of the opening / closing device 67A to close the rear hatch 45, stops the driving of the opening / closing device 66A to close the left window 46L, and then proceeds to step S9.

[0092] In step S9, if the A / C switch 61 is pressed, the processing unit 71 stops the operation of the expansion valve 40A and the blower fan 40B of the air conditioner 40 to stop the blowing of cooled air into the cabin 9, if it determines that the blower switch 62 is pressed, the processing unit 71 stops the operation of the blower fan 40B of the air conditioner 40 to stop the blowing of room temperature air into the cabin 9, and if the outside air introduction switch 63 is pressed, the processing unit 71 stops the operation of the opening device 63A to stop the introduction of outside air into the cabin 9, and then proceeds to step S10. This makes it possible to prevent the inside of the cabin 9 from being excessively cooled.

[0093] In step S10, the processing unit 71 stops driving the lifting device 68A, rotates the lower part of the lower step 50A of the step 50 downward, and proceeds to step S11. This allows the operator to easily board the control unit 5 using the step 50.

[0094] In step S11, the processing unit 71 drives the opening device 64A to circulate the inside air in the cabin 9 inside the cabin 9. This suppresses deviations in the temperature rise inside the cabin 9, and makes it possible to suppress a sudden rise in the temperature inside the cabin 9.

[0095] As shown in Figures 20 to 22, the operating position of an operating lever 80 provided on the right side of the front panel in front of the cockpit 42 of the control unit 5 is measured by an angle sensor 80S attached to the base of the operating lever 80.

[0096] An oil supply valve 82 that moves a piston 36B of the transmission 36 in the left-right direction is provided on the right side of the transmission 36, which is provided between the continuously variable transmission 32 that increases or decreases the output rotation of the engine E and the transmission path of the traveling device 2, and the piston 36B and the oil supply valve 82 are connected by a pipe 83.

[0097] The oil feed valve 82 is actuated in accordance with the operating position of the operating lever 80. For example, when the upper part of the operating lever 80 is moved leftward, oil is fed from the oil feed valve 82 to the piston 36B, causing the piston 36B to move leftward, disengaging the left clutch in the transmission 36, and then the left brake is activated. This allows the traveling device 2 to make a sharp turn to the left. On the other hand, when the upper part of the operating lever 80 is moved rightward, oil is fed from the piston 36B to the oil feed valve 82, causing the piston 36B to move rightward, disengaging the right clutch in the transmission 36, and then the right brake is activated. This allows the traveling device 2 to make a sharp turn to the right.

[0098] A parking brake 85 provided on the floor of the control unit 5 is connected to the brake shaft 36C of the transmission 36 via a rod 86. When the parking brake 85 is depressed, the rod 86 moves upward, causing the brake shaft 36C to rotate and activate the left and right brakes in the transmission 36. This allows the traveling device 2 to stop traveling.

[0099] As shown in FIGS. 23 and 24, an exhaust purification device 90 for purifying impurities in the exhaust gas combusted by the engine E is provided in the upper part of the engine compartment 6.

[0100] The exhaust purification device 90 is composed of a DOC 90A, which is a catalyst that oxidizes harmful components in the exhaust gas emitted from the engine E, and an SCR 90B, which purifies the exhaust gas by reducing nitrogen oxides in the exhaust gas with ammonia generated from a urea aqueous solution.

[0101] Exhaust gas discharged from the engine E passes through the DOC 90A, then the SCR 90B, and then passes through an exhaust pipe 91 whose front portion is connected to the SCR 90B, before being discharged to the outside.

[0102] The exhaust pipe 91 extends rearward from the front end and then curves toward the left rear, extending leftward in front of the first grain lifting duct 92 that transports grain threshed by the threshing device 4 to the grain tank 7, and then extending toward the left rear. The exhaust port of the exhaust pipe 91 is located behind the auger support 8C that carries the lateral discharge portion 8B of the discharge auger 8, and to the left of the second grain lifting duct 93 that transports the second grain to the threshing device 4. This allows the exhaust gas to be discharged to a position away from the cabin 9, making it possible to prevent the temperature inside the cabin 9 from rising due to the exhaust gas.

[0103] 25 and 26, the urea solution tank 95 that stores the urea solution to be supplied to the SCR 90B is placed on a tank support 96 provided behind the vertical discharge section 8A of the discharge auger 8, with the water supply port 95A of the urea solution tank 95 facing to the right. This allows the urea solution to be easily supplied to the urea solution tank 95, and also makes it possible to effectively utilize the space formed behind the vertical discharge section 8A.

[0104] The tank support base 96 is connected to the lower part of the vertical discharge section 8A via a connecting member 97 extending in the fore-and-aft direction, and the lower wall of the tank support base 96 is supported by an auger metal 8D that connects the lower rear part of the grain tank 7 to the vertical discharge section 8A via a connecting member 98. [Explanation of symbols]

[0105] 1 Aircraft frame 2 Running gear 3 Reaping device 4. Threshing equipment 5 Control Unit 9 Cabin 9S Temperature Sensor 10 frames 11 Left Frame 12 Right Frame 13 Connecting frame (first connecting frame) 14 Connecting frame (second connecting frame) 15 Left upper and lower frames 16 Left front and rear frame 30 Support part (1st support part) 31 vibration-isolating member (first vibration-isolating member) 35 Support part (second support part) 36 Transmission 37 Vibration-isolating member (second vibration-isolating member) 38 Support part (3rd support part) 39 Vibration-isolating member (third vibration-isolating member) 40 Air conditioner 45 rear hatch 46L left window (window) 56 Warning lamp 60 Remote Control 61 A / C switch (first switch) 62 Fan switch (second switch) 63 Outside air intake switch (third switch) 65 Ventilation switch 70 Controller E-Engine

Claims

1. A combine harvester having a traveling device (2) provided below a machine frame (1) on which an engine (E) is mounted, a reaping device (3) for reaping stalks provided in front of the machine frame (1), a threshing device (4) for threshing the stalks provided on the rear left side of the reaping device (3), and a control section (5) for an operator to ride on provided on the rear right side of the reaping device (3), The outer periphery of the control section (5) is covered with a cabin (9), The control section (5) is provided with an air conditioning device (40) for adjusting the temperature inside the cabin (9); A rear hatch (45) is provided on the upper wall of the cabin (9) and a window (46L) is provided on the left wall. a remote controller (60) for remotely operating the controller (70) of the operation unit (5); When a ventilation switch (65) of the remote control (60) is pressed, the air conditioner (40) operates for a preset time period, and the rear hatch (45) and the window (46L) are opened for the preset time period.

2. The combine harvester according to claim 1, wherein the ventilation switch (65) is formed from a first switch (61) that exhausts cooled air into the cabin (9), a second switch (62) that exhausts room temperature air, and a third switch (63) that introduces outside air from outside the cabin (9) into the cabin (9).

3. 3. A combine harvester according to claim 2, wherein the exhaust volume of the cooled air and the room temperature air and the introduction volume of the cooled air and the room temperature air are increased or decreased based on the measurement value of a temperature sensor (9S) that measures the temperature inside the cabin (9).

4. The combine harvester according to any one of claims 1 to 3, wherein, when the set time has elapsed, the air conditioning device (40) stops operating and the rear hatch (45) and the window (46L) close.

5. A combine harvester as described in claim 4, wherein when the operation of the air conditioning device (40) is stopped and the rear hatch (45) and the window (46L) are closed, the inside air of the cabin (9) is circulated into the cabin (9).

6. 2. The combine harvester according to claim 1, wherein when the ventilation switch (65) is pressed, a lower portion of a step (50) used when raising and lowering the control section (5) moves upward.

7. A warning lamp (56) is provided on the top of the reaping device (3), 7. A combine harvester according to claim 6, wherein the warning lamp (56) flashes when the lower part of the step (50) moves downward within the set time.

8. In a plan view, the frame (10) of the cabin (9) is formed of a left frame (11) disposed on the left side, a right frame (12) disposed on the right side, a first connecting frame (13) connecting front portions of the left frame (11) and the right frame (12), and a second connecting frame (14) connecting rear portions of the left frame (11) and the right frame (12), When viewed from the side, the left frame (11) is formed of a left upper and lower frame (15) extending in the up and down direction and a left front and rear frame (16) extending in the front and rear direction, A first support portion (30) provided on the body frame (1) and a first connecting frame (13) are connected via a pair of first vibration-isolating members (31) spaced a predetermined distance apart in the left-right direction, a second support portion (35) provided on the body frame (1) and a left front-rear frame (16) are connected via a second vibration-isolating member (37), and a third support portion (38) provided on the body frame (1) and a second connecting frame (14) are connected via a pair of left and right third vibration-isolating members (39) spaced a predetermined distance apart in the left-right direction, A combine harvester as described in claim 1, wherein, in a plan view, the second vibration-damping member (37) is positioned rearward of the first support portion (30) and forward of the third vibration-damping member (39) in the fore-and-aft direction, and the second vibration-damping member (37) is positioned to the left of the first support portion (30) and the third vibration-damping member (39) in the left-and-right direction.

9. A combine harvester according to claim 8, wherein, in a side view, the second vibration-isolating member (37) is positioned above the first vibration-isolating member (31) and below the third vibration-isolating member (39).

10. 10. The combine harvester according to claim 9, wherein, in a side view, the second vibration-isolating member (37) is disposed on an imaginary line connecting the first vibration-isolating member (31) and the third vibration-isolating member (39).

11. 11. A combine harvester according to claim 10, wherein the second vibration-isolating member (37) and the third vibration-isolating member (39) are larger than the first vibration-isolating member (31).

12. 12. A combine harvester according to claim 11, wherein the spacing between the third vibration-isolating members (39) in the left-right direction is wider than the spacing between the first vibration-isolating members (31) in the left-right direction.

13. a transmission (36) for increasing or decreasing the output rotation of the engine (E) is provided on the aircraft frame (1); The combine according to any one of claims 8 to 12, wherein a lower portion of the second support portion (35) is connected to an upper portion of the transmission (36).

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