Combine harvester

Abstract

The combine harvester according to the present application is provided with: a front pillar (6c) that supports a steering handle (6b) in front of a driver's seat (6a); and a rear frame portion (65) that is provided upright from a chassis frame (10) behind the driver's seat (6a), the front pillar (6c) having a front pillar frame (61) to which a cab (7) is mountable, the rear frame portion (65) having: a plurality of longitudinal frames (66L, 66R) that are provided upright from the chassis frame (10); and an upper support frame (69) that is mounted to the longitudinal frames (66L, 66R) and to which the cab (7) is mountable.

Description

TECHNICAL FIELD

[0001] The present application relates to a combine harvester, and particularly to a cab of a combine harvester. BACKGROUND

[0002] With regard to a combine harvester, there are a model without a cab as shown in Patent Literature 1, and a model with a cab as shown in Patent Literature 2. However, a user needs to select either a model without a cab or a model with a cab at the time of purchase, and in the case where a model without a cab is selected at the time of purchase, a combine harvester of a model with a cab cannot be used unless the model with a cab is newly purchased.

[0003] PRIOR ART DOCUMENTS

[0004] PATENT LITERATURE

[0005] Patent Literature 1: Japanese Patent Application Laid-Open No. 2013-78275

[0006] Patent Literature 2: Japanese Patent Application Laid-Open No. 2008-28

[0007] Patent Literature 3: Japanese Patent Application Laid-Open No. Hei 6-15430 SUMMARY

[0008] The present application has been achieved in view of the above-described circumstances, and has an object to provide a combine harvester capable of changing a model without a cab to a model with a cab later.

[0009] The combine harvester according to the present application includes a front pillar that supports an operation member in front of a driver's seat, and a rear frame portion that is provided upright from a chassis frame behind the driver's seat, the front pillar having a first mounting portion to which a cab is mountable, and the rear frame portion having a plurality of longitudinal frames provided upright from the chassis frame, and a second mounting portion mounted to the longitudinal frames and to which the cab is mountable.

[0010] In the present application, the combine harvester can be configured such that the second mounting portion is linked to a threshing portion.

[0011] In the present application, the combine harvester can be configured such that an engine is provided below the driver's seat, the rear frame portion has a plurality of the longitudinal frames arranged behind the engine, a linking portion that links upper portions of the plurality of the longitudinal frames to each other, an inclined portion that extends upward in an inclined posture from a rear portion of the linking portion toward the front, and the second mounting portion is provided to an upper portion of the inclined portion, and the cab is mounted to the second mounting portion in a state where the cab is placed on an upper portion of the second mounting portion.

[0012] In the present application, a positioning portion that defines the position of the cab with respect to the rear frame portion can be provided on the rear frame portion and the cab.

[0013] In the present application, a protective cover that protects the front of the muffler can be provided on the second mounting portion.

[0014] According to the present application, a combine harvester of a cab-less specification can be subsequently changed to a cab-equipped specification. In addition, the front and rear, left and right sides of the cab can be securely supported by the front pillar and the plurality of longitudinal frames, so that vibration of the cab can be suppressed even when the cab is subsequently installed. BRIEF DESCRIPTION OF DRAWINGS

[0015] Figure 1 is a perspective view of a combine harvester.

[0016] Figure 2 is a perspective view of a combine harvester.

[0017] Figure 3 is a perspective view of a combine harvester of a cab-less specification.

[0018] Figure 4A is a perspective view of a cab.

[0019] Figure 4B is a perspective view of a cab.

[0020] Figure 5 is a perspective view of a cab.

[0021] Figure 6 is a perspective view of a cab.

[0022] Figure 7A is a perspective view showing details of a mounting portion of a left front portion.

[0023] Figure 7B is a perspective view showing details of a mounting portion of a right front portion.

[0024] Figure 7C is a perspective view showing details of a mounting portion of a left rear portion.

[0025] Figure 7D is a perspective view showing details of a mounting portion of a right rear portion.

[0026] Figure 7E is a perspective view showing details of a mounting portion of a right bottom portion.

[0027] Figure 8 is a view of a cab portion as viewed from the rear.

[0028] Figure 9is a plan view of the cab.

[0029] Figure 10 is a perspective view of the combine harvester.

[0030] Figure 11 is a perspective view of the combine harvester.

[0031] Figure 12 is a perspective view of the combine harvester in a state where the cab is detached.

[0032] Figure 13A is a perspective view of the cab.

[0033] Figure 13B is a perspective view of the cab.

[0034] Figure 14A is a front view inside the cab.

[0035] Figure 14B is a perspective view showing a part of the cab in an enlarged manner.

[0036] Figure 15 is a view of the cab observed from the rear.

[0037] Figure 16 is a perspective view of the cab frame.

[0038] Figure 17 is a perspective view showing a lower part of the interior assembly side of the left window in an enlarged manner.

[0039] Figure 18 is a perspective view showing an upper part of the exterior assembly side of the right window in an enlarged manner.

[0040] Figure 19 is a plan view of the cab.

[0041] Figure 20 is a sectional view of the roof.

[0042] Figure 21 is a perspective view of the cab in a state where the outer roof is detached.

[0043] Figure 22 is an exploded perspective view of the air conditioning exterior air introduction portion.

[0044] Figure 23 is an exploded perspective view of the condenser exterior air introduction portion. DETAILED DESCRIPTION

[0045] <1st Embodiment>

[0046] An example of a combine harvester to which the present application is applied will be described.

[0047] [Overall Configuration of Combine Harvester]

[0048] Figure 1 and Figure 2 are a perspective view from the front left of the combine harvester 100 of the present embodiment, and a perspective view from the front right, respectively. In the figures, the front-rear direction, the left-right direction, and the up-down direction of the combine harvester 100 are indicated by arrows.

[0049] The combine harvester 100 is configured to mainly include a traveling device 1, a cutting device 2, a threshing device 3, a separating device 4, and a storage device 5.

[0050] The traveling device 1 is provided below the chassis frame 10. The traveling device 1 is provided with a transmission (not shown) and track devices 11 provided in left and right pairs. The transmission transmits power of an engine 90 (see FIG. 1) to the track devices 11. The track devices 11 cause the combine harvester 100 to travel in the front-rear direction or to turn in the left-right direction. Figure 8

[0051] The cutting device 2 is provided in front of the traveling device 1. The cutting device 2 is provided with a reel 21, a cutter (reel knife) 22, a feeder (cross feed screw) 23, and a feeding section 24. The reel 21 rotates to guide the stalks of the field toward the cutter 22. The cutter 22 cuts the stalks guided by the reel 21. The feeder 23 causes the stalks cut by the cutter 22 to be gathered at a prescribed position. The feeding section 24 feeds the stalks cut by the cutting device 2 to the threshing device 3 with the aid of a feeding chamber 25. A conveyor in which the feeder 23 is built is provided in the feeding chamber 25.

[0052] The threshing device 3 is provided behind the cutting device 2. The threshing device 3 is provided with a threshing cylinder, a receiving screen, and a front rotor. The threshing cylinder rotates to thresh the stalks. In addition, the threshing cylinder rotates to convey the stalks. The receiving screen supports the stalks conveyed by the threshing cylinder and causes the threshed material to drop toward the separating device 4. The front rotor feeds the stalks conveyed from the feeding section 24 to the threshing device 3. In addition, the front rotor not only conveys the stalks but also has a function of performing preliminary threshing (pre-threshing).

[0053] The separating device 4 is provided below the threshing device 3. The separating device 4 is provided with a shaking device and an air-blowing device (grain elevator). The shaking device performs a sifting operation on the threshed material to separate the grains. The grains separated by the shaking device are conveyed by a grain conveying device and fed to a grain tank 51 via a feeding inlet. The air-blowing device blows away the chaff and the like contained in the threshed material to assist in the separation of the grains. The chaff and the like are discharged to the outside from a chaff discharge port (not shown) provided behind the separating device 4.

[0054] ​The storage device 5 is located to the right of the threshing device 3 and the screening device 4. Therefore, the threshing device 3, the screening device 4, and the storage device 5 are arranged in a left-right configuration above the chassis frame 10. The storage device 5 includes a grain bin 51. The grain bin 51 stores the grains conveyed from the screening device 4. A discharge auger 52 is used to discharge the grains from the grain bin 51. The discharge auger 52 is configured to rotate in the up-down and left-right directions during the grain discharge operation, thereby enabling the grains to be discharged to any location.

[0055] The driver's unit 6 is located in front of the grain bin 51 and on the right front side of the machine body. The driver's unit 6 includes: a driver's seat 6a for the operator; a steering wheel 6b positioned in front of the driver's seat 6a; and a front pillar 6c positioned in front of the steering wheel support that supports the steering shaft of the steering wheel 6b. Various operating components such as a gearshift lever, clutch lever, and switches are arranged around these components. (See the driver's seat 6a, steering wheel 6b, front pillar 6c, etc. of the driver's unit 6.) Figure 3 It is covered by the driver's cab 7.

[0056] The driver's unit 6 is equipped with such Figure 5 The driver's side frame 60 is shown. The driver's side frame 60 is mounted on the chassis frame 10. The driver's side frame 60 includes: a front pillar frame 61; left and right pedal frames 62L and 62R extending rearward from the front pillar frame 61; a floor frame 63 erected from the rear end of the pedal frames 62L and 62R; a back panel 64 erected from the floor frame 63; and a rear frame portion 65 supporting the rear end of the back panel 64.

[0057] The front pillar frame 61 forms the skeleton of the front pillar 6c and appears as a rectangular frame when viewed from the front. The front pillar frame 61 is configured to include an upper front pillar frame 611, a lower front pillar frame 612, a left front pillar frame 613L, and a right front pillar frame 613R. The upper front pillar frame 611 and the lower front pillar frame 612 extend in the left-right direction. The left front pillar frame 613L and the right front pillar frame 613R connect the two ends of the upper front pillar frame 611 and the lower front pillar frame 612, respectively. The left front pillar frame 613L and the right front pillar frame 613R are approximately trapezoidal plate components when viewed from the side. The front pillar frame 61 corresponds to a first mounting section that can be installed in the driver's cab 7.

[0058] The left and right pedal frames 62L and 62R extend in the front-to-back direction. A floor (not shown) is horizontally supported between the left and right pedal frames 62L and 62R. A lifting pedal 621 is installed on the right pedal frame 62R.

[0059] The floor frame 63 includes: a first upright surface 63a extending upward from the rear end of the left and right pedal frames 62L and 62R and the floor; a first horizontal surface 63b extending rearward from the upper end of the first upright surface 63a; a second upright surface 63c extending upward from the rear end of the first horizontal surface 63b; and a second horizontal surface 63d extending rearward from the upper end of the second upright surface 63c. The driver's seat 6a is mounted on the upper part of the floor frame 63, more specifically, on the upper part of the first horizontal surface 63b. Additionally, an engine 90 (see reference) is disposed below the floor frame 63. Figure 8 ).

[0060] The back panel 64 is erected from the upper end of the second upright surface 63c of the floor frame 63. The rear end of the back panel 64 is connected to the upper end of the rear frame portion 65 in a manner that slopes backward as it rises upward. An air filter 91 for the engine 90 is housed in the space enclosed by the back panel 64 and the second horizontal surface 63d of the floor frame 63 (see reference). Figure 8 ).

[0061] Also refer to Figure 8 The rear frame portion 65 includes: left and right longitudinal frames 66L and 66R disposed at the rear of the engine 90; a connecting frame 67 (equivalent to a connecting portion) connecting the upper parts of the left and right longitudinal frames 66L and 66R to each other; a pair of inclined frames 68 and 68 (equivalent to inclined portions) extending upward in an inclined position from the rear of the connecting frame 67 towards the front; and an upper support frame 69 (equivalent to a second mounting portion) disposed on the upper part of the inclined frame 68. The left and right longitudinal frames 66L and 66R, the connecting frame 67, the pair of inclined frames 68 and 68, and the upper support frame 69 are welded together to form a single unit.

[0062] The left and right longitudinal frames 66L and 66R are arranged side by side and erected from the chassis frame 10. The connecting frame 67 is rectangular in shape when viewed from above, and its rear end is supported by the longitudinal frames 66L and 66R. The front end of the connecting frame 67 is connected to the rear end of the floor frame 63. The inclined frame 68 extends obliquely from the rear of the connecting frame 67 toward the rear end of the back panel 64.

[0063] The upper support frame 69 is configured to be horizontally mounted on top of a pair of inclined frames 68, 68. The upper support frame 69 is located further forward than the left and right longitudinal frames 66L, 66R. The upper support frame 69 is connected to the rear end of the back panel 64. At the left end of the upper support frame 69, a protective cover 69a is provided to protect the front of the muffler 92 (see reference). Figure 8 Additionally, the protective cover 69a is connected to the threshing device 3. By connecting the protective cover 69a to the threshing device 3, the driver's frame 60 is strengthened.

[0064] The driving portion frame 60 is configured in the above-described manner, so that the cab 7 can be firmly supported while the engine 90 is arranged below the driving portion 6, and the grain tank 51 can be made large.

[0065] The cab 7 is provided with a cab frame 70 as shown in Figure 6 . The cab frame 70 is provided with left and right side bottom cab frames 71, 72, left and right side front cab frames 73, 74, left and right side rear cab frames 75, 75, a door support frame 76, and a roof frame 77.

[0066] A windshield 7a (see Figure 4A ) is provided on the front surface of the cab frame 70. In addition, a side panel 7b (see Figure 4B ) including a left window is provided on the left side surface of the cab frame 70. In addition, a cab door 7c (see Figure 4A ) including a right window is provided on the right side surface of the cab frame 70. In addition, a roof 7d (see Figure 4A ) is provided on the upper surface of the cab frame 70.

[0067] In addition, when the cab 7 is attached to and detached from the driving portion 6, the cab 7 is suspended from above. The cab 7 is suspended by a suspension metal piece 7e (see Figure 4B ) provided on the left rear portion of the cab frame 70, and a handrail 7f (see Figure 4A ) provided on the right front portion of the cab frame 70 for boarding and alighting. The suspension metal piece 7e is provided on the upper portion of the left rear cab frame 75 of the cab frame 70 in a manner protruding toward the left side. The handrail 7f is provided on the right front cab frame 74 of the cab frame 70.

[0068] The left bottom cab frame 71 constitutes the left side bottom of the cab 7. The left bottom cab frame 71 extends horizontally from the front portion of the cab 7 toward the rear, and then extends obliquely upward. The front end of the left bottom cab frame 71 is joined to the lower end of the left front cab frame 73. The rear end of the left bottom cab frame 71 is joined to the lower portion of the left rear cab frame 75.

[0069] The right bottom cab frame 72 constitutes the right side bottom of the cab 7. The right bottom cab frame 72 is in the form of a plate extending horizontally in the front-rear direction. The front end of the right bottom cab frame 72 is joined to the lower end of the right front cab frame 74. The rear end of the right bottom cab frame 72 is joined to the lower end of the door support frame 76. In a state in which the cab 7 is attached to the driving portion 6, the right bottom cab frame 72 is located above the right pedal frame 62R.

[0070] The left front cab frame 73 and the right front cab frame 74 extend vertically and are respectively positioned on the left and right sides of the front of the cab 7. The upper ends of the left front cab frame 73 and the right front cab frame 74 are connected to the roof frame 77. The bottom right side of the cab 7 is positioned lower than the bottom left side. Therefore, the right front cab frame 74 is longer below the left front cab frame 73. The left front cab frame 73 and the right front cab frame 74 are connected by a front connecting frame 78. The front connecting frame 78 includes: left and right protrusions 78a and 78b that protrude further forward than the left front cab frame 73 and the right front cab frame 74; and a curved portion 78c that connects the front ends of the left and right protrusions 78a and 78b and curves forward. When the cab 7 is mounted on the driver's seat 6, the front connecting frame 78 is located in front of the upper front pillar frame 611.

[0071] The left and right rear cab frames 75 extend vertically and are respectively positioned on the left and right rear sides of the cab 7. The upper end of the rear cab frame 75 is connected to the rear of the roof frame 77. The lower ends of the left and right rear cab frames 75 are connected by a rear connecting frame 79. When the cab 7 is installed in the driver's compartment 6, the rear connecting frame 79 is located above the upper support frame 69.

[0072] The door support frame 76 extends upward from the bottom right side of the cab 7, then extends backward while tilting, and then extends upward again. The upper end of the door support frame 76 is connected to the rear of the roof frame 77. The cab door 7c is supported on the door support frame 76 in a rotatable manner.

[0073] The roof frame 77 forms the roof of the cab 7. When viewed from above, the roof frame 77 appears as a rectangular frame. The front of the roof frame 77 protrudes further forward than the left and right front cab frames 73 and 74. The roof frame 77 is covered by the roof 7d.

[0074] Next, details of the mounting structure for installing the cab 7 onto the driver's compartment 6 will be explained. The cab 7 is mounted using five mounting sections 81 to 85 located at the left front, right front, left rear, right rear, and right bottom.

[0075] The mounting portion 81 at the left front is located at the left front of the cab frame 70, specifically at the left end of the front connecting frame 78. The mounting portion 81 includes: an upper bracket 811, which is disposed at the lower end of the front connecting frame 78 of the cab frame 70; and a lower bracket 812, which is disposed on the side of the left front pillar frame 613L of the cab frame 60.

[0076] The upper bracket 811 is fixed to the lower portion of the left tab portion 78a of the front connecting frame 78. The upper bracket 811 is a member having two faces (a side face 811a and a lower face 811b) perpendicular to each other and formed in an L shape in a front view. The upper end of the side face 811a of the upper bracket 811 is connected to the lower portion of the left tab portion 78a. Two through holes are formed in the lower face 811b of the upper bracket 811.

[0077] The lower bracket 812 is fixed to the left side face of the left front pillar frame 613L. The lower bracket 812 has a first bracket member 812a fastened to the left side face of the left front pillar frame 613L by a bolt and a second bracket member 812b welded to the upper portion of the first bracket member 812a. The first bracket member 812a is in an L shape in a plan view and supports the second bracket member 812b from below. The second bracket member 812b is in an L shape in a side view and has two through holes formed in the upper face. The bolt 813 is inserted into the two through holes of the second bracket member 812b and the two through holes of the lower face 811b of the upper bracket 811 and fastened by the nut 814, whereby the upper bracket 811 is mounted to the lower bracket 812. Thus, the front connecting frame 78 of the cab frame 70 is mounted to the left front pillar frame 613L of the driver's room frame 60.

[0078] Further, a rectangular plate member 815 is arranged above the lower face 811b of the upper bracket 811. A plate-shaped rubber for vibration isolation is arranged between the plate member 815 and the lower face 811b of the upper bracket 811. Thus, the vibration of the lower bracket 812 is prevented from being transmitted to the upper bracket 811 through the bolt 813. Similarly, a plate-shaped rubber for vibration isolation is arranged between the lower face 811b of the upper bracket 811 and the upper face of the second bracket member 812b. Thus, the vibration of the lower bracket 812 is prevented from being directly transmitted to the upper bracket 811. Although detailed description is omitted, the same vibration isolation support structure can be employed for the right front, left rear, right rear and right bottom mounting portions 82 to 85.

[0079] In addition, a bolt 816 provided at the left front portion of the second bracket member 812b of the lower bracket 812 is used to mount a work lamp for irradiating the intake port of the supply portion 24.

[0080] The mounting portion 82 at the right front is located at the right front of the cab frame 70, specifically at the right end of the front connecting frame 78. The mounting portion 82 includes a mounting plate 821. The mounting plate 821 is a plate that is approximately Z-shaped when viewed from above. The front surface 821a of the Z-shaped mounting plate 821 is fixed to the left side of the right front pillar frame 613R of the cab frame 60 by means of two bolts 822. More specifically, the front surface 821a of the mounting plate 821 is fixed to a mounting plate 824 that protrudes to the left from the left side of the right front pillar frame 613R. On the other hand, the rear surface 821b of the Z-shaped mounting plate 821 is fixed to the left side of the right front cab frame 74 of the cab frame 70 by means of two bolts 823. More specifically, the rear surface 821b of the mounting plate 821 is fixed to a mounting plate 825 that protrudes to the left from the left side of the right front cab frame 74. The right front cab frame 74 of the cab frame 70 can be mounted to the right front pillar frame 613R of the cab frame 60 by means of mounting bracket 821.

[0081] The mounting section 83 is located at the left rear of the cab frame 70, specifically at the left end of the rear connecting frame 79. The mounting section 83 includes a left bracket 831 (see reference). Figure 5 The left bracket 831 is located at the left end of the upper support frame 69 of the cab frame 60. The left bracket 831 protrudes rearward from the upper support frame 69 and has two bolt holes formed on its upper surface. Conversely, two through holes are formed at the left end of the rear connecting frame 79. Bolts 832 are inserted into the two through holes of the rear connecting frame 79 and tightened in the bolt holes of the left bracket 831, thereby allowing the rear connecting frame 79 to be mounted on the left bracket 831. Accordingly, the rear connecting frame 79 of the cab frame 70 can be mounted on the upper support frame 69 of the cab frame 60.

[0082] The mounting section 84 is located at the right rear of the cab frame 70, specifically at the right end of the rear connecting frame 79. The mounting section 84 includes a right bracket 841 (see reference). Figure 5 The right bracket 841 is located at the right end of the upper support frame 69 of the cab frame 60. The right bracket 841 protrudes rearward from the upper support frame 69 and has two bolt holes formed on its upper surface. Conversely, two through holes are provided at the right end of the rear connecting frame 79. Bolts 842 are inserted into the two through holes of the rear connecting frame 79 and tightened in the bolt holes of the right bracket 841, thereby allowing the rear connecting frame 79 to be mounted on the right bracket 841. Accordingly, the rear connecting frame 79 of the cab frame 70 can be mounted on the upper support frame 69 of the cab frame 60.

[0083] In addition, such as Figure 5 As shown, a locating pin 843 protruding upwards is provided on the upper surface of the right bracket 841. The locating pin 843 is positioned behind the two bolt holes formed in the right bracket 841 and, when viewed from the rear, between the two bolt holes. On the other hand, as... Figure 6 As shown, a positioning hole 844 corresponding to the positioning pin 843 is formed at the right end of the rear connecting frame 79. By providing a positioning part configured to include the positioning pin 843 and the positioning hole 844, the various mounting parts can be formally fixed after initial positioning, thereby preventing the cab 7 from shifting relative to the driver's compartment 6. In addition, by positioning the positioning pin 843 between the two bolt holes, the alignment of the two bolt holes with the two through holes formed in the rear connecting frame 79 can be easily achieved.

[0084] The mounting portion 85 at the bottom right is located on the bottom right cab frame 72 of the cab frame 70. Two through holes are formed in the bottom right cab frame 72 along the longitudinal direction. Conversely, two bolt holes are formed in the right pedal frame 62R of the cab frame 60 along the longitudinal direction. Bolts 851 are inserted into the two through holes in the bottom right cab frame 72 and tightened in the bolt holes in the right pedal frame 62R, thereby allowing the bottom right cab frame 72 of the cab frame 70 to be mounted on the right pedal frame 62R of the cab frame 60.

[0085] The cab frame 70 can be reliably mounted to the cab frame 60 using the mounting parts 81 to 85. The front pillar frame 61 and the rear frame part 65 can be used to firmly support the front, rear, left and right sides of the cab 7, thereby suppressing the vibration of the cab 7 even when the cab 7 is subsequently mounted to the cab 6.

[0086] like Figure 9 As shown, with the cab 7 installed on the driver's unit 6, a sponge 6d is sandwiched between the front pillar 6c of the driver's unit 6 and the front connecting frame 78 of the cab frame 70. The sponge 6d is continuously disposed on the front surface and both sides of the front pillar 6c. A portion of the sponge 6d is flattened from above by the front connecting frame 78. By disposing of the sponge 6d, the gap between the outer surface of the front pillar 6c and the inner surface of the front connecting frame 78 can be filled.

[0087] Although an example of a conventional combine harvester is shown in this embodiment, the invention is not limited thereto; the invention may also be a self-tapping combine harvester.

[0088] The present invention does not limit the above embodiments in any way, and various improvements and modifications can be made without departing from the spirit of the present invention.

[0089] <2nd Embodiment>

[0090] As shown in Patent Literature 3, a work vehicle such as a combine harvester provided with a cab is known. However, a window is sometimes provided in a rear wall of the cab, but in a case where an air conditioning unit is arranged in the rear of the cab as in Patent Literature 3, rearward visibility is deteriorated due to the positional relationship between the window and the air conditioning unit.

[0091] The 2nd embodiment is completed in view of the above situation, and aims to provide a combine harvester in which a window and an air conditioning unit are arranged in the rear of a cab without deteriorating visibility.

[0092] The combine harvester according to the 2nd embodiment is provided with a cab in which a driver's seat is arranged, a rear window provided in a rear wall of the cab that covers the driver's seat, and an air conditioning unit arranged in the rear of an inner roof, in which an upper end position of the rear window is set to a position higher than a lower end position of the rear of the inner roof when viewed in a lateral direction.

[0093] According to the 2nd embodiment, since the upper end position of the rear window is high, visibility is not deteriorated even though the air conditioning unit is arranged in the rear of the cab.

[0094] In the 2nd embodiment, an air conditioning fan of the air conditioning unit and an air conditioning external air introduction port through which external air is introduced toward the air conditioning fan can be arranged on one side in the left-right direction of the cab.

[0095] Air introduced from the air conditioning external air introduction port can be immediately supplied to the air conditioning fan and the air conditioning.

[0096] In the 2nd embodiment, a pre-cleaner can be arranged on a side of the air conditioning external air introduction port.

[0097] According to this structure, external air containing large dust can be sucked in by the pre-cleaner and external air not containing large dust can be taken into the air conditioning.

[0098] In the 2nd embodiment, a condenser external air introduction port through which external air is introduced toward a condenser fan of the air conditioning can be arranged on the other side in the left-right direction of the cab.

[0099] According to this structure, sufficient external air can be introduced toward the air conditioning from one side of the cab, and sufficient external air can be introduced toward the condenser fan from the other side of the cab.

[0100] An example of the combine harvester according to the 2nd embodiment will be described.

[0101] [Overall configuration of combine harvester]

[0102] Figure 10 and Figure 11 are a perspective view from the front left and a perspective view from the front right, respectively, of the combine harvester 1100 of the present embodiment. In the figures, the front-rear direction, the left-right direction, and the up-down direction of the combine harvester 1100 are indicated by arrows.

[0103] The combine harvester 1100 is configured to mainly include a traveling device 1001, a cutting device 1002, a threshing device 1003, a screening device 1004, and a storage device 1005.

[0104] The traveling device 1001 is provided below a chassis frame 1010. The traveling device 1001 is provided with a transmission (not shown) and a track device 1011 provided in left and right pairs. The transmission transmits power of an engine 1090 (see Figure 23 ) to the track device 1011. The track device 1011 causes the combine harvester 1100 to travel in the front-rear direction or causes the combine harvester 1100 to turn in the left-right direction.

[0105] The cutting device 1002 is provided in front of the traveling device 1001. The cutting device 1002 is provided with a reel 1021, a cutter (reel knife) 1022, a feed screw (cross feed screw) 1023, and a feeding section 1024. The reel 1021 rotates to guide the stalks of the field toward the cutter 1022. The cutter 1022 cuts the stalks guided by the reel 1021. The feed screw 1023 causes the stalks cut by the cutter 1022 to be gathered at a prescribed position. The feeding section 1024 feeds the stalks cut by the cutting device 1002 to the threshing device 1003 with the aid of a feeding chamber 1025. A conveyor that conveys the stalks gathered with the aid of the feed screw 1023 is built into the feeding chamber 1025.

[0106] The threshing device 1003 is provided behind the cutting device 1002. The threshing device 1003 is provided with a threshing cylinder, a receiving screen, and a front rotor. The threshing cylinder rotates to thresh the stalks. In addition, the threshing cylinder rotates to convey the stalks. The receiving screen supports the stalks conveyed by the threshing cylinder and causes the threshed material to drop toward the screening device 1004. The front rotor feeds the stalks conveyed from the feeding section 1024 to the threshing device 1003. In addition, the front rotor not only conveys the stalks but also has a function of performing preliminary threshing (pre-threshing).

[0107] A screening device 1004 is located below the threshing device 1003. The screening device 1004 includes a oscillating device and a blower (winnowing machine). The oscillating device performs a sieving action on the threshed material to screen the grains. The grains screened by the oscillating device are conveyed by a grain conveying device and fed into the grain bin 1051 through a feed inlet. The blower assists in screening the grains by blowing away impurities such as straw fragments contained in the threshed material. The straw fragments and other impurities are discharged to the outside from a straw discharge outlet (not shown) located at the rear of the screening device 1004.

[0108] The storage device 1005 is located to the right of the threshing device 1003 and the screening device 1004. Therefore, the threshing device 1003, the screening device 1004, and the storage device 1005 are arranged in a left-right configuration above the chassis frame 1010. The storage device 1005 includes a grain bin 1051. The grain bin 1051 stores grains transported from the screening device 1004. A discharge auger 1052 is used to discharge the grains from the grain bin 1051. The discharge auger 1052 is configured to rotate in the up-down and left-right directions during grain discharge, thereby enabling the grains to be discharged to any location.

[0109] The driver's compartment 1006 is located in front of the grain bin 1051 and on the right front side of the machine body. The driver's compartment 1006 includes: a driver's seat 1061 for the operator; a steering wheel 1062 located in front of the driver's seat 1061; a front column 1063 located in front of the steering wheel support that supports the steering shaft of the steering wheel 1062; and a bracket 1064 located behind the driver's seat 1061. Various operating components such as a gearshift lever, clutch lever, and switches are arranged around these components. (See also: driver's seat 1061, steering wheel 1062, front column 1063, bracket 1064, etc. of the driver's compartment 1006) Figure 12 It is covered by the driver's cab 1007.

[0110] like Figure 14AAs shown, the bracket 1064 extends laterally at the rear of the driver's compartment 1006. The bracket 1064 can be used as a storage area. At the right end of the bracket 1064 is an operating box 1065 equipped with a grain clutch lever 1065a and a crossbar 1065b. The grain clutch lever 1065a is an operating component for engaging and disengaging the clutch of the discharge auger 105. The crossbar 1065b is an operating component for rotating the discharge auger 1052 in the up, down, left, and right directions. The crossbar 1065b is positioned closer to the driver's seat 1061 than the grain clutch lever 1065a. By providing the operating box 1065 for the discharge auger at the rear right of the driver's compartment 1006, it is easy to operate the discharge auger 1052, which rotates around the rear right end of the combine harvester 1100. Furthermore, as... Figure 12 As shown, a clutch lever 1066 for operating the cutting device 1002 and the threshing device 1003 is arranged on the left side of the driver's seat 1061.

[0111] like Figure 15 As shown, an engine 1090 is located in the lower part of the driver's compartment 1006, specifically below the driver's seat 1061. Furthermore, an air filter 1091 for purifying the air supplied to the engine 1090 is located behind the driver's seat 1061. Additionally, a pre-cleaner 1092 for pre-purifying the air supplied to the engine 1090 is located above and behind the driver's seat 1061.

[0112] The 1007 driver's cab is equipped with such Figure 16 The cab frame 1070 shown is provided. The cab frame 1070 includes bottom cab frames 1070a and 1070b on the left and right sides, front cab frames 1070c and 1070d on the left and right sides, rear cab frames 1070e and 1070e on the left and right sides, door support frame 1070f, and roof frame 1070g.

[0113] A windshield 1071 (see reference) is provided on the front surface of the cab frame 1070. Figure 13A Additionally, a side panel 1072 containing a left window 1076 is provided on the left side of the cab frame 1070 (see reference). Figure 13B Additionally, a cab door 1073 containing a right window 1077 is provided on the right side of the cab frame 1070 (see reference). Figure 13A Additionally, a roof 1074 is provided on the upper surface of the cab frame 1070 (see reference). Figure 13A Additionally, a rear panel 1075 containing the rear window 1078 is provided on the rear surface of the cab frame 1070 (see reference). Figure 13B The rear panel 1075 forms the rear wall of the cab 1007.

[0114] The left bottom cab frame 1070a constitutes the left side bottom of the cab 1007. The left bottom cab frame 1070a extends horizontally from the front of the cab 1007 toward the rear, and then extends obliquely upward. The front end of the left bottom cab frame 1070a is joined to the lower end of the left front cab frame 1070c. The rear end of the left bottom cab frame 1070a is joined to the lower portion of the left rear cab frame 1070e.

[0115] The right bottom cab frame 1070b constitutes the right side bottom of the cab 1007. The right bottom cab frame 1070b is in the form of a plate extending horizontally in the front-rear direction. The front end of the right bottom cab frame 1070b is joined to the lower end of the right front cab frame 1070d. The rear end of the right bottom cab frame 1070b is joined to the lower end of the door support frame 1070f.

[0116] The left and right front cab frames 1070c, 1070d extend in the up-down direction and are disposed on the left and right sides of the front of the cab 1007, respectively. The upper ends of the left and right front cab frames 1070c, 1070d are joined to the roof frame 1070g. The right side bottom of the cab 1007 is disposed at a position lower than the left side bottom. Thus, the right front cab frame 1070d is longer downward than the left front cab frame 1070c. The left and right front cab frames 1070c, 1070d are joined by a front connecting frame 1070h. The front connecting frame 1070h is located above the front pillar 1063 in a state in which the cab 1007 is installed to the driver's section 1006.

[0117] The left and right rear cab frames 1070e, 1070e extend in the up-down direction and are disposed on the left and right sides of the rear of the cab 1007, respectively. The upper end of the rear cab frame 1070e is joined to the rear of the roof frame 1070g. The lower ends of the left and right rear cab frames 1070e are joined by a rear connecting frame 1070i.

[0118] The door support frame 1070f extends from the right side bottom of the cab 1007 toward the upper side, and then extends obliquely toward the rear, and then extends again toward the upper side. The upper end of the door support frame 1070f is joined to the rear of the roof frame 1070g. The cab door 1073 is supported to the door support frame 1070f in a rotatable manner.

[0119] The roof frame 1070g constitutes the roof section of the cab 1007. When viewed from above, the roof frame 1070g is rectangular. The front of the roof frame 1070g protrudes further forward than the left and right front cab frames 1070c and 1070d. The roof frame 1070g is covered by the roof 1074. The rear of the roof frame 1070g includes inclined portions 1070j and 1070k that slope towards the center of the cab 1007 in the width direction as they move rearward. The left inclined portion 1070j is inclined to increase the opening area of ​​the external air inlet 1841 for air conditioning, as will be described later. Furthermore, the right inclined portion 1070k is inclined to increase the opening area of ​​the external air inlet 1851 for the condenser, as will be described later. Furthermore, since the amount of air drawn in from the external air inlet 1851 for the condenser is greater than the amount of air drawn in from the external air inlet 1841 for the air conditioner, a larger opening area is required. Therefore, compared with the front end of the left inclined section 1070j, the front end of the right inclined section 1070k is formed to extend further to the front of the cab 1007.

[0120] Next, we will explain the left window 1076. Figure 17 The lower part of the interior mounting side of the left window 1076 is shown. The left window 1076 is equipped with hinge 1076a (see reference). Figure 13B ), locking rod 1076b and engaging support piece 1076c.

[0121] Hinges 1076a support the left window 1076, allowing it to rotate freely. The base of hinge 1076a is fixed to the side panel 1072, which is located above the left window 1076, and the end of hinge 1076a is fixed to the left window 1076. Two hinges 1076a are provided on the upper part of the left window 1076 in the front-rear direction. Accordingly, the left window 1076 opens upward relative to the side panel 1072 by rotating with the upper end as the pivot point. The left window 1076 may be equipped with a gas spring (not shown) that applies force in the direction that causes the left window 1076 to open.

[0122] The locking lever 1076b is rotatably mounted on the lower end of the left window 1076. The rotation axis of the locking lever 1076b faces the left and right direction. Accordingly, the locking lever 1076b can rotate in the up and down direction. The locking lever 1076b is provided with a locking claw 1076d that engages with the locking support piece 1076c.

[0123] The engaging support piece 1076c is mounted on the side panel 1072, which is located below the left window 1076. The engaging support piece 1076c is provided with an engaging recess 1076e for engaging the engaging claw 1076d of the locking lever 1076b.

[0124] Therefore, if the locking lever 1076b is rotated downwards (counterclockwise when viewed from inside the cab 1007), a locked state is formed in which the engaging pawl 1076d engages with the engaging recess 1076e of the engaging support piece 1076c. Figure 17 If the locking lever 1076b is rotated upward (clockwise when viewed from inside the cab 1007), the locking release state is formed in which the engaging pawl 1076d disengages from the engaging recess 1076e of the engaging support piece 1076c.

[0125] Similar to the left window 1076, the right window 1077 has a hinge 1077a (see reference). Figure 13A The right window 1077 is supported by a locking lever and a locking support plate. The hinge 1077a allows for free rotation of the right window 1077. The base end of the hinge 1077a is fixed to the driver's cab door 1073, which is located above the right window 1077, and the end end of the hinge 1077a is fixed to the right window 1077. Two hinges 1077a are provided above the right window 1077 in the front-rear direction. Accordingly, the right window 1077 opens upward relative to the driver's cab door 1073 by rotating with its lower end side using its upper end side as a pivot point.

[0126] The shape of the locking rod and engaging support piece of the right window 1077 is similar to Figure 17 The locking lever 1076b and the engaging support piece 1076c of the left window 1076 shown have the same shape, so their description is omitted. However, the locking lever of the right window 1077 can also be symmetrical with respect to the locking lever 1076b of the left window 1076. In this case, if the locking lever is rotated downwards (clockwise when viewed from inside the driver's cab 1007), the right window 1077 is locked; if the locking lever is rotated upwards (counterclockwise when viewed from inside the driver's cab 1007), the right window 1077 is unlocked.

[0127] Figure 18 The upper part of the external mounting side of the right window 1077 is shown. The right window 1077 has a waterproof drip edge 1077f at its upper end. The waterproof drip edge 1077f extends in the front-to-back direction and completely covers the right window 1077. Figure 18 As shown, the waterproof drip edge 1077f is a component formed by bending a long strip of board in a roughly L-shaped cross-section. The lower surface of the waterproof drip edge 1077f is configured to be approximately horizontal, and the sides of the waterproof drip edge 1077f are configured to be inclined relative to the vertical direction. The waterproof drip edge 1077f is fixed to the cab door 1073, and the hinge 1077a is fixed to the side of the waterproof drip edge 1077f.

[0128] Similarly, the left window 1076 has a waterproof drip edge 1076f at its upper end. The waterproof drip edge 1076f extends in the front-to-back direction and completely covers the left window 1076 (see reference).Figure 19 However, as Figure 19 As shown, the waterproof drip edge 1076f extends beyond the rear end of the left window 1076 to the rear end of the side panel 1072. Therefore, the waterproof drip edge 1076f is longer than the waterproof drip edge 1077f of the right window 1077. The cross-sectional shape and installation method of the waterproof drip edge 1076f are the same as those of the waterproof drip edge 1077f of the right window 1077, so its description is omitted.

[0129] Next, the driver's cab door 1073 will be described. The driver's cab door 1073 is equipped with a door hinge 1073a (see reference). Figure 13A The door hinge 1073a supports the cab door 1073, allowing it to rotate freely. The base end of the door hinge 1073a is fixed to the cab frame 1070, and the end end is fixed to the cab door 1073. Two door hinges 1073a are provided on the upper part of the door support frame 1070f of the cab frame 1070, in the vertical direction. Accordingly, the front end of the cab door 1073 rotates relative to the rear end of the cab 1007, using this as a pivot point. With this structure, when the operator opens the cab door 1073 to board or alight, the cab door 1073 can open rearward, thus expanding the doorway area and facilitating boarding and alighting.

[0130] Next, we will explain the roof 1074. Figure 19 The roof 1074 is shown as viewed from above. Figure 20 This is a cross-sectional view of the rear of the roof 1074. The roof 1074 includes an inner roof 1741 and an outer roof 1742. The inner roof 1741 covers the top of the cab frame 1070, and the outer roof 1742 covers the inner roof 1741. An air conditioning unit 1008 (described later) is disposed between the inner roof 1741 and the outer roof 1742, and an air supply duct for supplying air from the air conditioning unit 1008 is formed in the inner roof 1741. An air outlet for supplying air from the air supply duct into the cab 1007 is formed in the inner roof 1741.

[0131] like Figure 19 As shown, the outer roof 1742 has a drain hole 1074a that extends vertically. The drain hole 1074a is located near mounting bolts used to mount the outer roof 1742 to the cab frame 1070. One drain hole 1074a is provided on each of the left and right sides at the front, and another on each of the left and right sides slightly rearward from the center in the longitudinal direction. Furthermore, to prevent water from entering the interior through the external air inlet 1841 for air conditioning and the external air inlet 1851 for the condenser (described later), no drain hole 1074c is provided at the rear.

[0132] The rear-side drain hole 1074a is provided above the water drip preventing eaves 1076f of the left window 1076 and the water drip preventing eaves 1077f of the right window 1077. Accordingly, water passing through the drain hole 1074a does not directly drip to the left window 1076 and the right window 1077 due to the water drip preventing eaves 1076f, 1077f when it rains, and thus, the left window 1076 and the right window 1077 can be prevented from being soiled.

[0133] As shown in FIG. 10, the air conditioning unit 1008 is provided above the inner roof 1741, and the rear portion of the inner roof 1741 is extended downward. Thus, as shown in FIG. 11, it is possible that the rear visual confirmation is deteriorated due to the inner roof 1741. Thus, in the second embodiment, the rear portion of the inner roof 1741 is extended obliquely upward, and thus, the rear end of the inner roof 1741 is set to be substantially the same height as the upper end position 1078a of the rear window 1078. That is, in a side view, the upper end position 1078a of the rear window 1078 is higher than the lower end position 1741a of the rear portion of the inner roof 1741. Accordingly, it is possible to arrange the air conditioning unit 1008 at the rear portion of the cab 1007, and it is possible to improve the visual confirmation of the discharge auger 1052 when the discharge work of the grain is performed from inside the cab 1007. Figure 20 Figure 14A As shown in FIG. 10, the air conditioning unit 1008 is provided above the inner roof 1741, and the rear portion of the inner roof 1741 is extended downward. Thus, as shown in FIG. 11, it is possible that the rear visual confirmation is deteriorated due to the inner roof 1741. Thus, in the second embodiment, the rear portion of the inner roof 1741 is extended obliquely upward, and thus, the rear end of the inner roof 1741 is set to be substantially the same height as the upper end position 1078a of the rear window 1078. That is, in a side view, the upper end position 1078a of the rear window 1078 is higher than the lower end position 1741a of the rear portion of the inner roof 1741. Accordingly, it is possible to arrange the air conditioning unit 1008 at the rear portion of the cab 1007, and it is possible to improve the visual confirmation of the discharge auger 1052 when the discharge work of the grain is performed from inside the cab 1007.

[0134] Figure 21 is a view of the cab 1007 in a state in which the outer roof 1742 is detached, as viewed obliquely from the rear upper side. The air conditioning unit 1008 is provided above the rear portion of the driver's seat 1061. The air conditioning unit 1008 includes an air conditioning main body 1081 and an air conditioning fan 1082. In addition, a condenser (not shown) and a condenser fan 1083 are provided below the air conditioning unit 1008, specifically, below the back panel 1075 of the cab 1007.

[0135] The air conditioning main body 1081 and the air conditioning fan 1082 are fixed above an air conditioning mounting plate 1081a that is horizontally supported between the rear cab frames 1070e, 1070e on the left and right sides of the cab frame 1070. The air conditioning main body 1081 is provided at the central portion in the left-right direction of the cab 1007, and the air conditioning fan 1082 is provided at the left side of the air conditioning main body 1081. The air conditioning main body 1081 is connected to a blow duct 1081b that extends forward in the roof 1074.

[0136] An air conditioning external air introduction portion 1084 is provided on a left inclined surface 1075a of the left side of the back panel 1075. The left inclined surface 1075a is provided between the back panel 1075 and the side panel 1072 and is inclined forward with respect to the back panel 1075. An upper portion of the left inclined surface 1075a is provided with a left inclined surface cover 1085. Figure 22 ​The rectangular external air inlet 1841 for air conditioning is shown. The external air inlet 1841 is formed on the left-sloping surface 1075a, thereby increasing its area compared to a surface extending in the front-rear or left-right direction. The external air inlet 1841 and the air conditioning fan 1082 are positioned together on the left side of the driver's cab 1007, allowing air drawn in from the external air inlet 1841 to be immediately supplied to the air conditioning fan 1082 and the air conditioning unit 1081.

[0137] The external air inlet 1841 for the air conditioner is covered by a dust filter 1841a. The dust filter 1841a is made of stamped metal. Additionally, the external air inlet 1841 for the air conditioner is made of... Figure 22 The shown volume control plate 1842 covers the area. The volume control plate 1842 is configured such that when installed on the left inclined surface 1075a, a gap is created between it and the left inclined surface 1075a, allowing external air to pass through the vertical gap 1842a between the volume control plate 1842 and the left inclined surface 1075a (see reference). Figure 21 The air is introduced into the air conditioning external air inlet 1841. Accordingly, the area of ​​the air conditioning external air inlet 1841 can be increased to prevent the dust filter 1841a from becoming clogged, and the amount of external air introduced toward the air conditioning unit 1008 can be reduced.

[0138] Additionally, a pre-cleaner 1092 is disposed on the side of the air conditioning external air inlet 1084, opposite to the air conditioning external air inlet 1084 (see reference 15). Figure 21 Accordingly, larger dust particles are handled by the pre-cleaner 1092, and thus, air after the removal of larger dust particles is introduced from the air conditioning external air inlet 1084. The pre-cleaner 1092 is supported on the left inclined surface 1075a by means of a support plate. In addition, the pre-cleaner 1092 is located behind the left window 1076, so that the pre-cleaner 1092 can be easily maintained from inside the driver's cab 1007 by opening the left window 1076.

[0139] The condenser fan 1083 supplies air for heat exchange to the condenser adjacent to it. A receiver 1086 (see reference) is located to the right of the condenser fan 1083. Figure 15 and Figure 23 Additionally, a sight glass 1087 is provided above the receiver 1086 so that the interior can be visually inspected from the side and rear. When the grain bin 1051 is opened, the sight glass 1087 can be easily inspected from the side and rear.

[0140] The air for the condenser is introduced from a condenser-external-air introduction portion 1085 provided on a right inclined surface 1075b on the right side of the back surface panel 1075. The right inclined surface 1075b is disposed between the back surface panel 1075 and the cab door 1073 and is inclined forward with respect to the back surface panel 1075. On substantially the entire surface of this right inclined surface 1075b, a rectangular condenser-external-air introduction port 1851 as shown in FIG. 18 is formed. By forming the condenser-external-air introduction port 1851 on the right inclined surface 1075b, the area of the condenser-external-air introduction port 1851 can be increased compared to the case where the port is formed on a surface extending in the front-rear direction or the left-right direction. In addition, the right inclined surface 1075b is more greatly inclined forward than the left inclined surface 1075a, and the condenser-external-air introduction port 1851 formed on the right inclined surface 1075b is larger than the air-conditioning-external-air introduction port 1841 formed on the left inclined surface 1075a. Figure 23

[0141] The condenser-external-air introduction port 1851 is covered by a dust removal panel 1852 as shown in FIG. 18. The central portion of the dust removal panel 1852 is composed of a punched metal piece. Figure 23

[0142] A first interior fitting panel 1006a is disposed on the inner side of the upper portion of the condenser-external-air introduction port 1851. In addition, a recessed portion recessed more forward than the back surface panel 1075 is formed below the rear window 1078. This recessed portion is formed by a second interior fitting panel 1006b, and the condenser is housed in the recessed portion. Further, as shown in FIG. 19, the upper surface of the second interior fitting panel 1006b constitutes a bracket 1064. Figure 16

[0143] The condenser-external-air introduction port 1851 is formed on substantially the entire surface of the right inclined surface 1075b, but the supply path of the air supplied to the condenser is only in the lower left portion of the condenser-external-air introduction port 1851 demarcated by the outer surface of the first interior fitting panel 1006a and the outer surface of the second interior fitting panel 1006b. Accordingly, the area of the condenser-external-air introduction port 1851 can be increased to prevent the dust removal panel 1852 from being clogged, or the external air can be introduced even if the lower portion of the dust removal panel 1852 is clogged, and on the other hand, the amount of introduction of the external air toward the condenser can be reduced.

[0144] A drain hose (not shown) extending from the air conditioner main body 1081 changes its orientation downward from the air conditioner main body 1081 through the front and left side of the air conditioner fan 1082 and in the rear, and extends downward through the inner side of the air-conditioning-external-air introduction port 1841, and finally extends to the rear of the vehicle body.

[0145] ​​​Although an example of a general combine harvester is shown in the present embodiment, the present application is not limited thereto and can also be a self-unloading combine harvester.

[0146] The present application is not limited to the above-described embodiments and various modifications can be made thereto without departing from the spirit of the present application.

[0147] Explanation of Reference Numerals

[0148] 3 Grain unloading device

[0149] 6 Cab

[0150] 6b Steering wheel

[0151] 6c Front pillar

[0152] 7 Cab

[0153] 10 Chassis frame

[0154] 60 Cab frame

[0155] 65 Rear frame portion

[0156] 66L Left longitudinal frame

[0157] 66R Right longitudinal frame

[0158] 67 Connecting frame

[0159] 68 Tilt frame

[0160] 69 Upper support frame

[0161] 69a Protective cover

[0162] 70 Cab frame

[0163] 90 Engine

[0164] 92 Muffler

[0165] 100 Combine harvester

[0166] 843 Positioning pin

[0167] 844 Positioning hole

[0168] 1006 Cab

[0169] 1007 Cab

[0170] 1070 Cab frame

[0171] 1074 Roof

[0172] 1741 Inner roof

[0173] 1741a lower end position of the rear portion of the inner roof

[0174] 1078 rear window

[0175] 1078a upper end position of the rear window

[0176] 1008 air conditioning unit

[0177] 1841 air conditioning external air introduction port

[0178] 1851 condenser external air introduction port

[0179] 1100 combine harvester

Claims

1. A combine harvester, wherein, The combine harvester has the following features: The front pillar, which supports the operating components in front of the driver's seat; and The rear frame section is mounted upright from the chassis frame behind the driver's seat. The front pillar has a first mounting section that can be installed in the driver's cab. The rear frame section has: a plurality of longitudinal frames that are erected from the chassis frame; and a connecting section that connects the upper parts of the plurality of longitudinal frames to each other. A frame extending upward from the connecting portion; and a second mounting portion disposed on the upper part of the frame and capable of being mounted on the cab. The second mounting part abuts against the rear connecting frame located at the lower end behind the cab in the left-right direction. The plurality of longitudinal frames are positioned behind the engine located below the driver's seat.

2. The combine harvester according to claim 1, wherein, The combine harvester is equipped with a threshing unit. The second mounting section is connected to the threshing section.

3. The combine harvester according to claim 1 or 2, wherein, The frame extends upward in a tilted posture from the rear of the connecting portion toward the front. The driver's cab is mounted on the second mounting part, which extends in the left-right direction, while being placed on the upper part of the second mounting part.

4. The combine harvester according to any one of claims 1 to 3, wherein, A positioning part is provided in the rear frame section and the cab, which defines the position of the cab relative to the rear frame section.

5. The combine harvester according to any one of claims 1 to 4, wherein, A protective cover is provided at the second mounting section to protect the front of the muffler.

Images