阅读说明：本技术 联合收割机 (Combine harvester ) 是由 森川裕 于 2019-02-19 设计创作，主要内容包括：本发明所涉及的联合收割机具备：前柱(6c),其在驾驶座席(6a)的前方对转向方向盘(6b)进行支承；以及后方框架部(65),其在驾驶座席(6a)的后方从底盘框架(10)立起设置,前柱(6c)具有能够供驾驶室(7)安装的前柱框架(61),后方框架部(65)具有：从底盘框架(10)立起设置的多个纵框架(66L、66R)；以及安装于纵框架(66L、66R)、且能够供驾驶室(7)安装的上部支承框架(69)。(The combine harvester of the invention comprises: a front pillar (6c) that supports the steering wheel (6b) in front of the driver seat (6 a); and a rear frame section (65) that stands up from the chassis frame (10) behind the driver seat (6a), wherein the front pillar (6c) has a front pillar frame (61) to which the driver's cabin (7) can be attached, and wherein the rear frame section (65) has: a plurality of vertical frames (66L, 66R) erected from the chassis frame (10); and an upper support frame (69) that is attached to the vertical frames (66L, 66R) and to which the cab (7) can be attached.)

1. A combine-harvester, wherein,

the combine harvester is provided with:

a front pillar that supports the operation member in front of the driver seat; and

A rear frame part erected from the chassis frame behind the driver seat,

the front column has a 1 st mounting portion to which a cab can be mounted,

the rear frame section includes: a plurality of vertical frames erected from the chassis frame; and a 2 nd mounting part which is mounted on the vertical frame and to which the cab can be mounted.

2. A combine harvester according to claim 1,

the combine harvester is provided with a threshing part,

the 2 nd installation part is connected with the threshing part.

3. A combine harvester according to claim 1 or 2,

an engine is provided below the driver seat,

the rear frame section includes: a plurality of the vertical frames disposed rearward of the engine; a connecting portion for connecting upper portions of the plurality of vertical frames to each other; an inclined portion extending upward in a posture inclined from a rear portion of the connection portion toward a front; and the 2 nd mounting part which is arranged on the upper part of the inclined part,

the cab is mounted on the 2 nd mounting part in a state of being placed on the upper part of the 2 nd mounting part.

4. A combine harvester according to any one of claims 1 to 3,

Positioning portions that specify the position of the cab with respect to the rear frame portion are provided in the rear frame portion and the cab.

5. A combine harvester according to any one of claims 1 to 4,

the 2 nd installation part is provided with a protective cover for protecting the front of the silencer.

Technical Field

The invention relates to a combine harvester, in particular to a cab of the combine harvester.

Background

As for the combine harvester, there are, for example, a specification without a cab as shown in patent document 1 and a specification with a cab as shown in patent document 2. However, the user needs to select the cab-less specification or the cab-equipped specification at the time of purchase, and if the cab-less specification is selected at the time of purchase, the combine having the cab specification cannot be used without purchasing the cab-equipped specification again.

Disclosure of Invention

The present invention has been made in view of the above circumstances, and an object thereof is to provide a combine harvester capable of changing a specification without a cab to a specification with a cab.

The combine harvester of the invention comprises: a front pillar that supports the operation member in front of the driver seat; and a rear frame portion that stands up from the chassis frame behind the driver seat, the front pillar having a 1 st mounting portion to which a driver's cab can be mounted, the rear frame portion including: a plurality of vertical frames erected from the chassis frame; and a 2 nd mounting part mounted on the vertical frame and capable of mounting the cab.

In the present invention, the following structure may be formed: the combine harvester is provided with a threshing part, and the No. 2 mounting part is connected with the threshing part.

In the present invention, the following structure may be formed: an engine is provided below the driver seat, and the rear frame portion includes: a plurality of the vertical frames disposed rearward of the engine; a connecting portion for connecting upper portions of the plurality of vertical frames; an inclined portion extending upward in a posture inclined from a rear portion of the connection portion toward a front; and a 2 nd installation part arranged on the upper part of the inclined part, wherein the cab is installed on the 2 nd installation part under the state of being arranged on the upper part of the 2 nd installation part.

In the present invention, the following structure may be formed: positioning portions that specify the position of the cab with respect to the rear frame portion are provided in the rear frame portion and the cab.

In the present invention, the following structure may be formed: the 2 nd installation part is provided with a protective cover for protecting the front of the silencer.

According to the present invention, the combine harvester without the cab can be changed to the combine harvester with the cab. Further, the front pillar and the plurality of vertical frames can firmly support the front, rear, left, and right sides of the cab, and vibration of the cab can be suppressed even when the cab is mounted later.

Drawings

Fig. 1 is a perspective view of a combine harvester.

Fig. 2 is a perspective view of the combine harvester.

Fig. 3 is a perspective view of a combine without a cab.

Fig. 4A is a perspective view of the cab.

Fig. 4B is a perspective view of the cab.

Fig. 5 is a perspective view of the cab frame.

Fig. 6 is a perspective view of the cab frame.

Fig. 7A is a perspective view showing details of the mounting portion of the left front portion.

Fig. 7B is a perspective view showing details of the mounting portion of the right front portion.

Fig. 7C is a perspective view showing details of the mounting portion of the left rear portion.

Fig. 7D is a perspective view showing details of the mounting portion of the right rear portion.

Fig. 7E is a perspective view showing details of the mounting portion of the right bottom portion.

Fig. 8 is a view of the driver's part as viewed from the rear.

Fig. 9 is a plan view of the cab.

Fig. 10 is a perspective view of the combine harvester.

Fig. 11 is a perspective view of the combine harvester.

Fig. 12 is a perspective view of the combine harvester with the cab removed.

Fig. 13A is a perspective view of the cab.

Fig. 13B is a perspective view of the cab.

Fig. 14A is a front view inside the cab.

Fig. 14B is an enlarged perspective view showing a part of the inside of the cab.

Fig. 15 is a view of the driver's part as viewed from the rear.

Fig. 16 is a perspective view of the cab frame.

Fig. 17 is a perspective view showing an enlarged lower portion of the interior fitting side of the left window.

Fig. 18 is an enlarged perspective view showing an upper portion of the exterior fitting side of the right window.

Fig. 19 is a plan view of the cab.

Fig. 20 is a sectional view of the roof.

Fig. 21 is a perspective view of the cab with the outer roof removed.

Fig. 22 is an exploded perspective view of the air conditioning outside air introduction unit.

Fig. 23 is an exploded perspective view of the outside air introduction portion for the condenser.

Detailed Description

< embodiment 1 >

An example of a combine harvester according to the present invention will be described.

[ integral Structure of combine harvester ]

Fig. 1 and 2 are a perspective view of the combine harvester 100 according to the present embodiment as viewed from the front left and a perspective view as viewed from the front right, respectively. The front-back direction, the left-right direction, and the up-down direction of the combine harvester 100 are indicated by arrows in the figure.

The combine harvester 100 mainly includes a traveling device 1, a harvesting device 2, a threshing device 3, a screening device 4, and a storage device 5.

The traveling device 1 is provided below the chassis frame 10. The traveling device 1 includes a transmission (not shown) and crawler devices 11 provided as a pair on the left and right. The transmission transmits power of an engine 90 (see fig. 8) to the crawler belt device 11. The crawler device 11 causes the combine harvester 100 to travel in the front-rear direction or causes the combine harvester 100 to turn in the left-right direction.

The harvesting device 2 is disposed in front of the traveling device 1. The harvesting device 2 includes a reel 21, a cutter 22, a screw 23, and a feeder 24. The reel 21 rotates to guide the ear stalks of the field toward the cutter 22. The cutter 22 cuts the ear stalks guided by the reel 21. The auger 23 collects the ear stalks cut by the cutter 22 at a predetermined position. The feeder unit 24 feeds the ear stalks cut by the cutting device 2 to the threshing device 3 through the feeder chamber 25. The cornstalks collected by the auger 23 are conveyed to a conveyor of the rotor and placed in a feeding chamber 25.

The threshing device 3 is arranged behind the cutting device 2. The threshing device 3 includes a threshing cylinder, a receiving net, and a front rotor. The threshing cylinder rotates to thresh the ear and stalk. In addition, the threshing cylinder rotates to convey the ears and stalks. The receiving net supports the ear stalks transported by the threshing cylinder and drops the threshed objects toward the screening device 4. The front rotor feeds the ear stalks fed from the feeding portion 24 toward the threshing device 3. In addition, the front rotor not only conveys the corncobs and stalks, but also has the function of pre-threshing (pre-threshing).

The screening device 4 is disposed below the threshing device 3. The screening device 4 includes a swing device and an air blower (grain blower). The oscillating device performs a sieving operation on the threshed grains to screen the grains. The grains screened by the oscillating device are conveyed by the grain conveying device and fed to the grain tank 51 through the feed opening. The air blowing device blows away impurities such as straw scraps contained in the threshing objects to assist the screening of grains. Foreign matter such as straw chips is discharged to the outside through a straw discharge port (not shown) provided at the rear of the screening device 4.

The storage device 5 is provided on the right side of the threshing device 3 and the sieving device 4. Therefore, the threshing device 3, the screening device 4, and the storage device 5 are arranged above the chassis frame 10 in a left-right arrangement. The storage device 5 includes a grain tank 51. The grain tank 51 stores grains supplied from the screening device 4. The discharge auger 52 is used to discharge the grains in the grain tank 51. The discharge auger 52 is constituted: when the discharging operation of the grain is performed, the grain can be discharged to any place by rotating in the vertical and horizontal directions.

The driver 6 is provided in front of the grain tank 51 and in the front of the right side of the machine body. The driver unit 6 includes: a driver seat 6a on which an operator sits; a steering wheel 6b disposed in front of the driver seat 6 a; and a front pillar 6c disposed in front of a steering column that supports a steering shaft of the steering wheel 6b, and various operation elements such as a shift lever, a clutch lever, and switches are disposed around the above-described elements. The operator's seat 6a, the steering wheel 6b, the front pillar 6c, and the like (see fig. 3) of the operator's section 6 are covered with an operator's cab 7.

The cab 6 includes a cab frame 60 as shown in fig. 5. The cab frame 60 is mounted on the chassis frame 10. The cab frame 60 includes: a front pillar frame 61; left and right pedal frames 62L, 62R extending rearward from the front pillar frame 61; a floor frame 63 erected from the rear ends of the pedal frames 62L, 62R; a back panel 64 erected from the floor frame 63; and a rear frame section 65 that supports the rear end of the back panel 64.

The front pillar frame 61 forms a skeleton of the front pillar 6c and has a rectangular frame shape in front view. 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. Left front pillar frame 613L and right front pillar frame 613R connect both ends of upper front pillar frame 611 and lower front pillar frame 612, respectively. The left front pillar frame 613L and the right front pillar frame 613R are plate members having a substantially trapezoidal shape in a side view. Front pillar frame 61 corresponds to a 1 st mounting portion to which cab 7 can be mounted.

The left and right pedal frames 62L, 62R extend in the front-rear direction. A floor, not shown, is transversely provided between the left and right pedal frames 62L, 62R. An elevating pedal 621 is attached to the right pedal frame 62R.

The floor frame 63 includes: a 1 st rising surface 63a extending upward from rear ends of the left and right pedal frames 62L, 62R and the floor; a 1 st horizontal surface 63b extending rearward from an upper end of the 1 st rising surface 63 a; a 2 nd rising surface 63c extending upward from a rear end of the 1 st horizontal surface 63 b; and a 2 nd horizontal surface 63d extending rearward from an upper end of the 2 nd rising surface 63 c. The driver seat 6a is placed on an upper portion of the floor frame 63, more specifically, on an upper portion of the 1 st horizontal surface 63 b. Further, an engine 90 (see fig. 8) is disposed below the floor frame 63.

The back panel 64 is erected from the upper end of the 2 nd erected surface 63c of the floor frame 63. The rear panel 64 is connected at its rear end to the upper end of the rear frame 65 so as to be inclined rearward as it goes upward. An air cleaner 91 for the engine 90 (see fig. 8) is housed in a space surrounded by the back panel 64 and the 2 nd horizontal surface 63d of the floor frame 63.

Referring also to fig. 8, the rear frame portion 65 includes: vertical frames 66L, 66R disposed on the left and right sides behind engine 90; a connecting frame 67 (corresponding to a connecting portion) that connects upper portions of the left and right vertical frames 66L and 66R to each other; a pair of inclined frames 68, 68 (corresponding to inclined portions) extending upward in an inclined posture from the rear portion of the connecting frame 67 toward the front; and an upper support frame 69 (corresponding to the 2 nd mounting part) provided on the upper part of the tilt frame 68. The left and right vertical frames 66L, 66R, the connecting frame 67, the pair of inclined frames 68, and the upper support frame 69 are integrally welded.

The left and right vertical frames 66L, 66R are arranged in a left-right array and are erected from the chassis frame 10. The connecting frame 67 has a rectangular plate shape in plan view, and the rear end is supported by the vertical frames 66L, 66R. The front end of the coupling frame 67 is coupled to the rear end of the floor frame 63. The inclined frame 68 extends obliquely from the rear of the coupling frame 67 toward the rear end of the back panel 64.

The upper support frame 69 is disposed in a state of being laterally erected on the upper portions of the pair of inclined frames 68, 68. The upper support frame 69 is positioned forward of the left and right vertical frames 66L, 66R. The upper support frame 69 is coupled to the rear end of the back panel 64. A protective cover 69a (see fig. 8) for protecting the front of the muffler 92 is provided at the left end of the upper support frame 69. The protective cover 69a is connected to the threshing device 3. The guard 69a is coupled to the threshing device 3, and the cab frame 60 is reinforced.

By configuring the cab frame 60 in this manner, the cab 7 can be firmly supported while the engine 90 is disposed below the cab 6, and the grain tank 51 can be increased in size.

The cab 7 includes a cab frame 70 as shown in fig. 6. The cab frame 70 includes left and right bottom cab frames 71, 72, left and right front cab frames 73, 74, left and right rear cab frames 75, a door support frame 76, and a roof frame 77.

A windshield 7a (see fig. 4A) is provided on the front surface of the cab frame 70. Further, a side panel 7B including a left window is provided on the left side surface of the cab frame 70 (see fig. 4B). Further, a cab door 7c including a right window is provided on the right side surface of the cab frame 70 (see fig. 4A). Further, a roof 7d (see fig. 4A) is provided on the upper surface of the cab frame 70.

When cab 7 is attached to and detached from cab 6, cab 7 is suspended from above. The cab 7 is suspended by a suspension bracket 7e (see fig. 4B) provided at the left rear portion of the cab frame 70 and an armrest 7f (see fig. 4A) for riding in and out provided at the right front portion of the cab frame 70. The suspension bracket 7e is provided on the upper portion of the left rear cab frame 75 of the cab frame 70 so as to protrude leftward. The armrest 7f is provided on the front right cab frame 74 of the cab frame 70.

The left bottom cab frame 71 constitutes the left bottom of the cab 7. Left bottom cab frame 71 extends horizontally rearward from the front of cab 7, and then extends obliquely upward. The front end of the left lower cab frame 71 is coupled to the lower end of the left front cab frame 73. The rear end of the left lower cab frame 71 is coupled to the lower portion of the left rear cab frame 75.

Right bottom cab frame 72 constitutes the right bottom of cab 7. The right bottom cab frame 72 has a plate shape extending horizontally in the front-rear direction. The front end of right bottom cab frame 72 is coupled to the lower end of right front cab frame 74. The rear end of the right lower cab frame 72 is coupled to the lower end of the door support frame 76. In a state where the cab 7 is attached to the cab portion 6, the right underbody cab frame 72 is positioned above the right pedal frame 62R.

Left and right front cab frames 73, 74 extend in the vertical direction and are disposed on the front left and right sides of 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 right bottom of the cab 7 is disposed at a lower position than the left bottom. Therefore, the right front cab frame 74 is longer downward than the left front cab frame 73. The left front cab frame 73 and the right front cab frame 74 are coupled by a front coupling frame 78. The front connection frame 78 includes: left and right projecting pieces 78a, 78b projecting forward from the left and right front cab frames 73, 74; and a bent portion 78c that connects the front ends of the left and right projecting pieces 78a, 78b and is bent forward. In a state where cab 7 is attached to cab 6, front connecting frame 78 is positioned in front of upper front pillar frame 611.

Left and right rear cab frames 75, 75 extend in the vertical direction and are disposed on the left and right sides of the rear portion of the cab 7. The upper end of the rear cab frame 75 is coupled to the rear portion 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. In a state where cab 7 is attached to cab 6, rear connecting frame 79 is positioned above upper support frame 69.

The door support frame 76 extends upward from the right bottom of the cab 7, then extends while inclining rearward, and then extends upward again. The upper end of the door support frame 76 is connected to the rear portion of the roof frame 77. The cab door 7c is rotatably supported by the door support frame 76.

The roof frame 77 constitutes a ceiling portion of the cab 7. The roof frame 77 has a rectangular frame shape in plan view. The front portion of the roof frame 77 protrudes forward from the left and right front cab frames 73, 74. The roof frame 77 is covered by the roof 7 d.

Next, the details of the mounting structure of cab 7 to cab 6 will be described. The cab 7 is mounted by 5 mounting portions 81 to 85 located at the left front portion, right front portion, left rear portion, right rear portion, and right bottom portion.

The left front attachment portion 81 is located at the left front portion of the cab frame 70, specifically, at the left end portion of the front connection frame 78. The mounting portion 81 includes: an upper bracket 811 provided at the lower end of the front connection frame 78 of the cab frame 70; and a lower bracket 812 provided on a side surface of the left front pillar frame 613L of the cab frame 60.

The upper bracket 811 is fixed to the lower portion of the left projecting piece 78a of the front connecting frame 78. The upper bracket 811 is the following: the display device includes 2 surfaces (a side surface 811a and a lower surface 811b) perpendicular to each other, and the 2 surfaces are formed in an L shape in front view. The upper end of the side surface 811a of the upper bracket 811 is connected to the lower portion of the left projecting piece 78 a. The lower surface 811b of the upper bracket 811 has 2 through holes.

The lower bracket 812 is fixed to the left side surface of the left front pillar frame 613L. The lower bracket 812 includes: a 1 st bracket component 812a fastened and coupled to the left side surface of the left front pillar frame 613L by bolts; and a 2 nd bracket part 812b welded to an upper portion of the 1 st bracket part 812 a. The 1 st bracket 812a is L-shaped in plan view, and supports the 2 nd bracket 812b from below. The 2 nd bracket component 812b is L-shaped in side view, and has 2 through holes formed in the upper surface. Upper bracket 811 can be attached to lower bracket 812 by inserting bolts 813 into the 2 through holes of 2 nd bracket member 812b and the 2 through holes of lower surface 811b of upper bracket 811 and fastening them with nuts 814. Accordingly, the front connection frame 78 of the cab frame 70 can be attached to the left front pillar frame 613L of the cab frame 60.

Further, a rectangular plate member 815 is disposed above the lower surface 811b of the upper bracket 811. A plate-shaped rubber for vibration prevention is disposed between plate member 815 and lower surface 811b of upper bracket 811. This prevents vibration of lower bracket 812 from being transmitted to upper bracket 811 by bolt 813. Similarly, a plate-shaped rubber for vibration prevention is also disposed between the lower surface 811b of the upper bracket 811 and the upper surface of the 2 nd bracket member 812 b. This prevents the vibration of the lower bracket 812 from being directly transmitted to the upper bracket 811. Although the detailed description is omitted, the vibration-proof support structure can be adopted for the right front portion, the left rear portion, the right rear portion, and the right bottom portion mounting portions 82 to 85.

Further, a bolt 816 provided on the left front portion of the 2 nd bracket component 812b of the lower bracket 812 is used for attaching a working lamp for irradiating the intake port of the supply unit 24.

The right front attachment portion 82 is located at the right front portion of the cab frame 70, specifically, at the right end portion of the front connection frame 78. The mounting portion 82 includes a mounting stay 821. The mounting stay 821 is a plate having a substantially zigzag shape in a plan view. A front surface 821a of the zigzag attachment stay 821 is fixed to a left side surface of the right front pillar frame 613R of the cab frame 60 by 2 bolts 822. More specifically, the front surface 821a of the mounting stay 821 is fixed to a mounting plate 824 provided so as to protrude leftward from the left side surface of the right front pillar frame 613R. On the other hand, a rear surface 821b of the zigzag-shaped mounting stay 821 is fixed to a left side surface of the right front cab frame 74 of the cab frame 70 by 2 bolts 823. More specifically, the rear surface 821b of the mounting stay 821 is fixed to a mounting plate 825 provided so as to protrude leftward from the left side surface of the right front cab frame 74. The right front cab frame 74 of the cab frame 70 can be attached to the right front pillar frame 613R of the cab frame 60 by the attachment brackets 821.

The left rear attachment portion 83 is located at the left rear portion of the cab frame 70, specifically, at the left end portion of the rear connecting frame 79. The mounting portion 83 includes a left bracket 831 (see fig. 5), and the left bracket 831 is provided at a left end portion of the upper support frame 69 of the cab frame 60. The left bracket 831 is provided to protrude rearward from the upper support frame 69, and 2 bolt holes are formed in the upper surface of the left bracket 831. On the other hand, 2 through holes are formed in the left end of the rear connecting frame 79. The rear connecting frame 79 can be attached to the left bracket 831 by inserting the bolts 832 into the 2 through holes of the rear connecting frame 79 and fastening the bolts 832 to the bolt holes of the left bracket 831. Accordingly, the rear connecting frame 79 of the cab frame 70 can be attached to the upper support frame 69 of the cab frame 60.

The right rear mounting portion 84 is located at the right rear portion of the cab frame 70, specifically, at the right end portion of the rear connecting frame 79. The mounting portion 84 includes a right bracket 841 (see fig. 5), and the right bracket 841 is provided at the right end portion of the upper support frame 69 of the cab frame 60. The right bracket 841 is provided to protrude rearward from the upper support frame 69, and 2 bolt holes are formed in the upper surface of the right bracket 841. On the other hand, 2 through holes are provided at the right end of the rear connecting frame 79. The rear connecting frame 79 can be attached to the right bracket 841 by inserting the bolts 842 into the 2 through holes of the rear connecting frame 79 and fastening the bolts 842 with the bolt holes of the right bracket 841. Accordingly, the rear connecting frame 79 of the cab frame 70 can be attached to the upper support frame 69 of the cab frame 60.

As shown in fig. 5, a positioning pin 843 projecting upward is provided on the upper surface of the right bracket 841. Positioning pin 843 is provided at a position behind the 2 bolt holes formed in right bracket 841 and between the 2 bolt holes in a rear view. On the other hand, as shown in fig. 6, a positioning hole 844 corresponding to the positioning pin 843 is formed at the right end of the rear coupling frame 79. By providing the positioning portion configured to include positioning pin 843 and positioning hole 844, the main fixing of each mounting portion can be performed after the initial positioning, and cab 7 does not deviate from cab 6. Further, positioning pins 843 are positioned between the 2 bolt holes, so that the 2 bolt holes can be easily aligned with the 2 through holes formed in rear connecting frame 79.

The right bottom mounting portion 85 is located on the right bottom cab frame 72 of the cab frame 70. The right bottom cab frame 72 is formed with 2 through holes in the front-rear direction. On the other hand, 2 bolt holes are formed in the front-rear direction in the right pedal frame 62R of the cab frame 60. By inserting bolts 851 into 2 through holes of right floor cab frame 72 and fastening bolts 851 to bolt holes of right pedal frame 62R, right floor cab frame 72 of cab frame 70 can be attached to right pedal frame 62R of cab frame 60.

The cab frame 70 can be reliably attached to the cab frame 60 by the attaching portions 81 to 85. Front, rear, left, and right portions of cab 7 can be firmly supported by front pillar frame 61 and rear frame portion 65, and vibration of cab 7 can be suppressed even when cab 7 is subsequently attached to cab 6.

As shown in fig. 9, in a state where cab 7 is attached to cab 6, sponge 6d is interposed between front pillar 6c of cab 6 and front connection frame 78 of cab frame 70. The sponge 6d is continuously disposed on the front surface and both side surfaces of the front pillar 6 c. A part of the sponge 6d is crushed from above by the front coupling frame 78. By disposing the sponge 6d, the gap generated between the outer surface of the front pillar 6c and the inner surface of the front connecting frame 78 can be filled.

Although the present embodiment shows an example of a general-type combine harvester, the present invention is not limited to this, and may be a self-threshing type combine harvester.

The present invention is not limited to the above embodiments, and various modifications and changes can be made without departing from the scope of the present invention.

< embodiment 2 >

As shown in patent document 3, a work vehicle such as a combine harvester equipped with a cab is known. However, although a window may be provided in the rear wall of the cab, when the air conditioning unit is disposed rearward in the cab as in patent document 3, the visibility rearward is deteriorated due to the positional relationship between the window and the air conditioning unit.

The embodiment 2 has been made in view of the above circumstances, and an object thereof is to provide a combine harvester in which a window and an air conditioning unit are disposed in the rear of a cab without deteriorating visibility.

A combine harvester according to embodiment 2 includes: a driving section; the rear window is provided on a rear wall of a cab that covers an operator's cab, and the air conditioning unit is disposed at a rear portion of the inner roof.

According to embodiment 2, since the upper end of the rear window is positioned high, the air conditioning unit is disposed at the rear of the cab without deteriorating the visibility.

In embodiment 2, an air conditioning fan of the air conditioning unit and an air conditioning outside air inlet port for introducing outside air to the air conditioning fan may be provided on one side in the left-right direction of the cab.

The air introduced from the air conditioning external air inlet can be immediately supplied to the air conditioning fan and the air conditioner.

In embodiment 2, a precleaner may be provided on a side of the air conditioning outside air inlet.

According to this configuration, the external air containing large dust can be sucked in by the precleaner and the external air containing no large dust can be taken into the air conditioner.

In embodiment 2, a condenser external air inlet for introducing external air to a condenser fan of an air conditioner may be provided on the other side in the left-right direction of the cab.

According to this configuration, sufficient outside air can be introduced from one side of the cab to the air conditioner, and sufficient outside air can be introduced from the other side of the cab to the condenser fan.

An example of a combine harvester according to embodiment 2 will be described.

[ integral Structure of combine harvester ]

Fig. 10 and 11 are a perspective view of the combine harvester 1100 according to the present embodiment as viewed from the front left and a perspective view as viewed from the front right, respectively. The front-back direction, the left-right direction, and the up-down direction of the combine harvester 1100 are indicated by arrows in the figure.

The combine harvester 1100 mainly includes a traveling device 1001, a harvesting device 1002, a threshing device 1003, a screening device 1004, and a storage device 1005.

The traveling device 1001 is provided below the chassis frame 1010. The traveling device 1001 includes: a transmission (not shown); and crawler belts 1011 provided as a pair on the left and right. The transmission transmits power of an engine 1090 (see fig. 23) to the crawler 1011. The crawler 1011 runs the combine 1100 in the front-rear direction, or turns the combine 1100 in the left-right direction.

The harvesting device 1002 is provided in front of the traveling device 1001. The harvesting device 1002 includes a reel 1021, a cutter 1022, an auger 1023, and a feeder 1024. The reel 1021 rotates to direct the ear stalks of the field toward the cutter 1022. The cutter 1022 cuts the ear stalks guided by the reel 1021. The packing auger 1023 collects the stalks cut by the cutter 1022 at a predetermined position. The feeder 1024 supplies the ear stalks cut by the cutting device 1002 to the threshing device 1003 via the feeder chamber 1025. The stalks collected by the auger 1023 are conveyed to a conveyer of the rotor and placed in a feeding chamber 1025.

The threshing device 1003 is disposed behind the harvesting device 1002. The threshing device 1003 includes a threshing cylinder, a receiving net, and a front rotor. The threshing cylinder rotates to thresh the ear and stalk. In addition, the threshing cylinder rotates to convey the ears and stalks. The receiving net supports the ear stalks transported by the threshing cylinder and causes the threshed material to fall toward the screening device 1004. The front rotor feeds the ear stalks fed from the feeding unit 1024 to the threshing unit 1003. In addition, the front rotor not only conveys the corncobs and stalks, but also has the function of pre-threshing (pre-threshing).

The screening device 1004 is disposed below the threshing device 1003. The screening device 1004 includes a swing device and an air blower (grain blower). The oscillating device performs a sieving operation on the threshed grains to screen the grains. The grains sifted by the oscillating device are conveyed by a grain conveying device and fed to a grain tank 1051 through a feed inlet. The air blowing device blows away impurities such as straw chips contained in the threshing material to assist the screening of grains. Foreign matter such as straw chips is discharged to the outside from a straw discharge port (not shown) provided at the rear of the screening device 1004.

The storage device 1005 is provided on the right side of the threshing device 1003 and the sieving device 1004. Therefore, the threshing device 1003, the screening device 1004, and the storage device 1005 are arranged in a left-right arrangement above the chassis frame 1010. The storage device 1005 includes a grain tank 1051. The grain tank 1051 stores grains supplied from the screening device 1004. A discharge auger 1052 is used for discharging grains in the grain box 1051. The discharge auger 1052 is configured as follows: when the discharging operation of the grain is performed, the grain can be discharged to any place by rotating in the vertical and horizontal directions.

The driver 1006 is disposed in front of the grain tank 1051 and in front of the right side of the machine body. The driver unit 1006 includes: a driver seat 1061 on which an operator sits; a steering wheel 1062 disposed in front of the driver seat 1061; a front column 1063 disposed in front of a steering column that supports a steering shaft of the steering wheel 1062; and a bracket 1064 and the like disposed behind the driver seat 1061, and various operation elements such as a shift lever, a clutch lever, and switches are disposed around the above components. The operator's seat 1061, the steering wheel 1062, the front pillar 1063, the bracket 1064, and the like (see fig. 12) of the operator's compartment 1006 are covered by an operator's cab 1007.

As shown in fig. 14A, a bracket 1064 extends in the left-right direction at the rear of the cab 1006. The rack 1064 can be used as an article placement site. At the right end of the holder 1064 are disposed: and a control box 1065 having a grain clutch lever 1065a and a cross bar 1065 b. The grain clutch lever 1065a is an operation member for operating the clutch of the discharge auger 105 to be engaged and disengaged. The cross bar 1065b is an operation member for rotating the discharge auger 1052 in the vertical and horizontal directions. The crossbar 1065b is disposed: closer to operator's seat 1061 than to grain clutch lever 1065 a. By providing the operation box 1065 for the discharge auger at the right rear portion of the steering unit 1006 in this way, the discharge auger 1052 that rotates about the right rear end portion of the combine 1100 can be easily operated. As shown in fig. 12, a clutch lever 1066 for operating the harvesting device 1002 and the threshing device 1003 is disposed on the left side of the operator seat 1061.

As shown in fig. 15, an engine 1090 is disposed below the driver 1006, specifically, below a driver seat 1061. An air filter 1091 for purifying air supplied to the engine 1090 is disposed behind the driver seat 1061. A precleaner 1092 for purifying air supplied to engine 1090 in advance is provided behind and above driver seat 1061.

The cab 1007 is provided with a cab frame 1070 as shown in fig. 16. The cab frame 1070 includes left and right bottom cab frames 1070a and 1070b, left and right front cab frames 1070c and 1070d, left and right rear cab frames 1070e and 1070e, a door support frame 1070f, and a roof frame 1070 g.

A windshield 1071 (see fig. 13A) is provided on the front surface of cab frame 1070. A side panel 1072 (see fig. 13B) including a left window 1076 is provided on the left side surface of the cab frame 1070. Further, a cab door 1073 (see fig. 13A) including a right window 1077 is provided on the right side surface of the cab frame 1070. Further, a roof 1074 (see fig. 13A) is provided on the upper surface of the cab frame 1070. A rear panel 1075 (see fig. 13B) including a rear window 1078 is provided on the rear surface of the cab frame 1070. The back panel 1075 constitutes a rear wall of the cab 1007.

The left bottom cab frame 1070a constitutes the left bottom of the cab 1007. The left bottom cab frame 1070a extends horizontally rearward from the front of the cab 1007 and then extends obliquely upward. The front end of left bottom cab frame 1070a is coupled to the lower end of left front cab frame 1070 c. The rear end of left bottom cab frame 1070a is coupled to the lower portion of left rear cab frame 1070 e.

The right bottom cab frame 1070b constitutes the right bottom of the cab 1007. Right bottom cab frame 1070b has a plate shape extending horizontally in the front-rear direction. The front end of right bottom cab frame 1070b is coupled to the lower end of right front cab frame 1070 d. The rear end of the right lower cab frame 1070b is coupled to the lower end of the door support frame 1070 f.

Left and right front cab frames 1070c and 1070d extend in the vertical direction and are disposed on the front left and right sides of cab 1007, respectively. The upper ends of the left front cab frame 1070c and the right front cab frame 1070d are connected to a roof frame 1070 g. The right bottom of the cab 1007 is disposed at a lower position than the left bottom. Therefore, the right front cab frame 1070d is longer downward than the left front cab frame 1070 c. Left and right front cab frames 1070c and 1070d are coupled by a front coupling frame 1070 h. In a state where the cab 1007 is attached to the cab 1006, the front connecting frame 1070h is positioned above the front pillar 1063.

Left and right rear cab frames 1070e and 1070e extend in the vertical direction and are disposed on the rear left and right sides of the cab 1007, respectively. The upper end of the rear cab frame 1070e is coupled to the rear portion of the roof frame 1070 g. Lower ends of the left and right rear cab frames 1070e are coupled by a rear coupling frame 1070 i.

The door support frame 1070f extends upward from the right bottom of the cab 1007, then extends while inclining rearward, and then extends upward again. The upper end of the door support frame 1070f is coupled to the rear portion of the roof frame 1070 g. The cab door 1073 is rotatably supported by the door support frame 1070 f.

The roof frame 1070g constitutes a ceiling portion of the cab 1007. The roof frame 1070g has a rectangular frame shape in a plan view. The front portion of the roof frame 1070g protrudes forward from the front cab frames 1070c and 1070d on the left and right sides. The roof frame 1070g is covered by a roof 1074. The rear portion of the roof frame 1070g is provided with: inclined portions 1070j, 1070k inclined toward the center in the width direction of the cab 1007 as they go rearward. The left inclined portion 1070j is inclined to increase the opening area of the air conditioning external air inlet 1841 as described later. The right inclined portion 1070k is inclined to increase the opening area of the condenser outside air inlet 1851, which will be described later. Further, since the amount of air taken in from the condenser outside air inlet 1851 is larger than the amount of air taken in from the air conditioning outside air inlet 1841 and a larger opening area is required, the front end of the right inclined portion 1070k is formed to extend further to the front of the cab 1007 than the front end of the left inclined portion 1070 j.

Next, the left window 1076 will be explained. Fig. 17 shows a lower portion of the inner fitting side of the left window 1076. The left window 1076 includes a hinge 1076a (see fig. 13B), a lock lever 1076B, and an engagement support piece 1076 c.

The hinge 1076a rotatably supports the left window 1076. The hinge 1076a is fixed to the side panel 1072 above the left window 1076 at the base end side thereof, and the hinge 1076a is fixed to the left window 1076 at the tip end side thereof. The hinges 1076a are provided at the upper part of the left window 1076 and 2 in the front-rear direction. Accordingly, the left window 1076 is opened upward with respect to the side panel 1072 so as to rotate with the lower end side serving as a rotation fulcrum. The left window 1076 may include a gas spring (not shown) that biases the left window 1076 in the direction of opening.

The lock lever 1076b is rotatably attached to the lower end of the left window 1076. The rotation axis of the lock lever 1076b faces the left-right direction. Accordingly, the lock lever 1076b can rotate in the vertical direction. The lock lever 1076b is provided with an engagement claw 1076d that engages with the engagement support piece 1076 c.

The engagement support piece 1076c is attached to the side panel 1072 below the left window 1076. The engagement support piece 1076c is provided with an engagement recess 1076e into which the engagement claw 1076d of the lock lever 1076b is engaged.

Therefore, when the lock lever 1076b is turned downward (counterclockwise as viewed from the inside of the cab 1007), the lock state (the state shown in fig. 17) is established in which the engagement claw 1076d is engaged with the engagement concave portion 1076e of the engagement support piece 1076c, and when the lock lever 1076b is turned upward (clockwise as viewed from the inside of the cab 1007), the lock release state is established in which the engagement claw 1076d is disengaged from the engagement concave portion 1076e of the engagement support piece 1076 c.

The right window 1077 includes a hinge 1077a (see fig. 13A), a lock lever, and an engagement support piece, as in the left window 1076. The hinge 1077a rotatably supports the right window 1077. The base end side of the hinge 1077a is fixed to the cab door 1073 above the right window 1077, and the tip end side of the hinge 1077a is fixed to the right window 1077. The hinges 1077a are provided at the upper part of the right window 1077 in the front-rear direction by 2 pieces. Accordingly, the right window 1077 is opened upward with respect to the cab door 1073 so as to rotate with the lower end side serving as a rotation fulcrum.

The shapes of the lock lever and the engagement support piece of the right window 1077 are the same as those of the lock lever 1076b and the engagement support piece 1076c of the left window 1076 shown in fig. 17, and therefore, the description thereof is omitted. However, the shape of the lock lever of the right window 1077 may be plane-symmetrical with respect to the shape of the lock lever 1076b of the left window 1076. At this time, when the lock lever is rotated downward (clockwise as viewed from the inside of the cab 1007), the right window 1077 is in the locked state, and when the lock lever is rotated upward (counterclockwise as viewed from the inside of the cab 1007), the right window 1077 is in the unlocked state.

Fig. 18 shows the upper part of the external fitting side of the right window 1077. The right window 1077 has a waterproof drip edge 1077f at the upper end. The waterproof drip edge 1077f extends in the front-rear direction and covers the entire right window 1077. As shown in fig. 18, the waterproof drip edge 1077f is a member formed by bending a strip plate so that the cross section thereof is substantially L-shaped. The lower surface of the waterproof drip edge 1077f is arranged substantially horizontally, and the side surface of the waterproof drip edge 1077f is arranged inclined with respect to the vertical direction. The waterproof drip edge 1077f is fixed to the cab door 1073, and the hinge 1077a is fixed to a side surface of the waterproof drip edge 1077 f.

Similarly, the left window 1076 has a waterproof drip edge 1076f at the upper end. The waterproof drip edge 1076f extends in the front-rear direction and covers the entire left window 1076 (see fig. 19). However, as shown in fig. 19, the waterproof drip edge 1076f extends beyond the rear end of the left window 1076 to the rear end of the side panel 1072. Thus, the waterproof drip edge 1076f is longer than the waterproof drip edge 1077f of the right window 1077. The sectional shape and the mounting method of the water-proof drip edge 1076f are the same as those of the water-proof drip edge 1077f of the right window 1077, and therefore, the description thereof is omitted.

Next, the cab door 1073 will be explained. The cab door 1073 includes a door hinge 1073A (see fig. 13A). The door hinge 1073a rotatably supports the cab door 1073. The base end side of the door hinge 1073a is fixed to the cab frame 1070, and the tip end side of the door hinge 1073a is fixed to the cab door 1073. The door hinges 1073a are provided at 2 positions in the vertical direction above the door support frame 1070f of the cab frame 1070. Accordingly, the front end side of the cab door 1073 rotates with respect to the cab 1007 with the rear end side serving as a rotation fulcrum. According to this configuration, when the operator opens the cab door 1073 to get on and off, the cab door 1073 can be opened rearward, and therefore, the range of the doorway can be enlarged to facilitate getting on and off.

Next, the roof 1074 will be explained. Fig. 19 shows the vehicle roof 1074 as viewed from above. Fig. 20 is a sectional view of the rear portion of the vehicle roof 1074. The roof 1074 includes an inner roof 1741 and an outer roof 1742. The inner roof 1741 covers the upper part of the cab frame 1070, and the outer roof 1742 covers the inner roof 1741. An air conditioning unit 1008, which will be described later, and an air blowing duct for blowing air from the air conditioning unit 1008 are disposed between the inner roof 1741 and the outer roof 1742, and an air blowing port for blowing air fed from the air blowing duct into the cab 1007 is formed in the inner roof 1741.

As shown in fig. 19, the outer roof 1742 includes a drain hole 1074a penetrating in the vertical direction. Drain holes 1074a are disposed in the vicinity of mounting bolts for mounting outer roof 1742 to cab frame 1070. The drain holes 1074a are provided one on each of the left and right sides of the front portion, and one on each of the left and right sides slightly rearward of the center portion in the front-rear direction. The rear portion is not provided with a drain hole 1074c so as not to allow water to enter the interior from an air conditioning outside air inlet 1841 and a condenser outside air inlet 1851, which will be described later.

The rear drain hole 1074a is disposed above the water-proof drip edge 1076f of the left window 1076 and the water-proof drip edge 1077f of the right window 1077. Accordingly, water passing through the water drain holes 1074a during rain does not directly drip on the left window 1076 and the right window 1077 due to the waterproof drip eaves 1076f and 1077f, and therefore, the left window 1076 and the right window 1077 can be prevented from being soiled.

As shown in fig. 20, an air conditioning unit 1008 is disposed above the inner roof 1741, and the rear portion of the inner roof 1741 extends downward. Therefore, as shown in fig. 14A, rear visibility may be deteriorated by the inner roof 1741. Therefore, in embodiment 2, the rear portion of the inner roof 1741 is extended obliquely upward, and the rear end of the inner roof 1741 is set to substantially the same height as the upper end position 1078a of the rear window 1078. That is, 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 in side view. Accordingly, the air conditioning unit 1008 can be disposed at the rear of the cab 1007, and the visual confirmation of the discharge auger 1052 when discharging grain from the cab 1007 can be improved.

Fig. 21 is a diagram of the cab 1007 when the outer roof 1742 is removed from the cab obliquely from the rear upward. An air conditioning unit 1008 is disposed above the rear portion of the driver seat 1061. The air conditioning unit 1008 includes an air conditioning main body 1081 and an air conditioning fan 1082. Further, a condenser (not shown) and a condenser fan 1083 are disposed below the air conditioning unit 1008, specifically, below the back panel 1075 of the cab 1007.

The air conditioner main body 1081 and the air conditioner fan 1082 are fixed above an air conditioner mounting plate 1081a, and the air conditioner mounting plate 1081a is transversely erected between the rear cab frames 1070e, 1070e on the left and right sides of the cab frame 1070. The air conditioner main body 1081 is disposed in the center of the cab 1007 in the left-right direction, and the air conditioner fan 1082 is disposed on the left side of the air conditioner main body 1081. An air supply duct 1081b extending forward in the roof 1074 is connected to the air conditioner main body 1081.

An air conditioning outside air introduction portion 1084 is provided at the left inclined surface 1075a on the left side of the rear surface panel 1075. The left inclined surface 1075a is disposed between the back panel 1075 and the side panel 1072 and is inclined forward with respect to the back panel 1075. A rectangular air conditioning outside air inlet 1841 shown in fig. 22 is provided above the left inclined surface 1075 a. By forming the air conditioning external air inlet 1841 at the left inclined surface 1075a, the area of the air conditioning external air inlet 1841 can be increased as compared with the case where it is formed at a surface extending in the front-rear direction or the left-right direction. By providing the air-conditioning outside air inlet 1841 on the left side of the cab 1007 together with the air-conditioning fan 1082, the air introduced from the air-conditioning outside air inlet 1841 can be immediately supplied to the air-conditioning fan 1082 and the air-conditioning body 1081.

The air conditioning outside air inlet 1841 is covered with a dust removal screen 1841 a. The dust-removing net 1841a is made of a punched metal member. The air conditioning outside air inlet 1841 is covered by an inlet amount control plate 1842 as shown in fig. 22. The introduction amount control plate 1842 is configured to: when the air conditioner is attached to the left inclined surface 1075a, a gap is formed between the air conditioner and the left inclined surface 1075a, and the external air is introduced into the air conditioning external air inlet 1841 through a gap 1842a (see fig. 21) in the vertical direction between the introduction amount control plate 1842 and the left inclined surface 1075 a. Accordingly, the area of the air-conditioning outside air inlet 1841 can be increased to prevent the dust removal net 1841a from being clogged, and the amount of outside air introduced into the air-conditioning unit 1008 can be reduced.

Further, a precleaner 1092 (see fig. 15 and 21) is disposed on a side of the air conditioning outside air introduction unit 1084 so as to face the air conditioning outside air introduction unit 1084. Accordingly, since the large dust is treated by the precleaner 1092, the air from which the large dust is removed is introduced from the air-conditioning outside air introduction portion 1084. The precleaner 1092 is supported by the left inclined surface 1075a via a support plate. Further, since the precleaner 1092 is disposed rearward of the left window 1076, the precleaner 1092 can be easily maintained by opening the left window 1076 from the cab 1007.

The condenser fan 1083 supplies air for heat exchange to the condenser adjacent to the condenser fan 1083. A receiver 1086 (see fig. 15 and 23) is disposed on the right side of the condenser fan 1083. A sight glass 1087 is provided above the receiver 1086 so that the inside can be visually recognized from the side and the rear, and when the grain box 1051 is opened, the sight glass 1087 can be easily recognized from the side and the rear.

The air for the condenser is introduced from the condenser outside air introduction portion 1085 provided at the right inclined surface 1075b on the right side of the back surface plate 1075. The right inclined surface 1075b is disposed between the rear surface panel 1075 and the cab door 1073 and is inclined forward with respect to the rear surface panel 1075. A rectangular condenser outside air inlet 1851 shown in fig. 23 is formed substantially on the entire surface of the right inclined surface 1075 b. By forming the condenser outside air introduction port 1851 at the right inclined surface 1075b, the area of the condenser outside air introduction port 1851 can be increased as compared with the case where the port is formed at a surface extending in the front-rear direction or the left-right direction. The right inclined surface 1075b is inclined more largely forward than the left inclined surface 1075a, and the external air inlet 1851 for the condenser formed in the right inclined surface 1075b is larger than the external air inlet 1841 for the air conditioner formed in the left inclined surface 1075 a.

The condenser outside air inlet 1851 is covered with a dust removing plate 1852 as shown in fig. 23. The dust removing plate 1852 is formed at its center by a punched metal.

The 1 st interior panel 1006a is disposed inside an upper portion of the condenser outside air inlet 1851. Further, a recess recessed forward from the rear panel 1075 is formed below the rear window 1078. The recess is formed by the 2 nd inner mount panel 1006b, and the condenser is housed in the recess. Further, as shown in fig. 16, the upper surface of the 2 nd interior trim panel 1006b constitutes a bracket 1064.

The condenser outside air inlet 1851 is formed substantially on 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 outside air inlet 1851 partitioned by the outer surface of the 1 st interior panel 1006a and the outer surface of the 2 nd interior panel 1006 b. Accordingly, the area of the external air inlet 1851 for the condenser can be increased to prevent the dust removal plate 1852 from being clogged, or the external air can be introduced even if the lower portion of the dust removal plate 1852 is clogged, and the amount of external air introduced into the condenser can be reduced.

The drain hose (not shown) extending from the air conditioner main body 1081 changes its orientation downward from the air conditioner main body 1081 toward the rear through the front and left sides of the air conditioner fan 1082, and extends downward through the inside of the air conditioner external air inlet 1841, and finally extends toward the rear of the body.

Although the present embodiment shows an example of a general-type combine harvester, the present invention is not limited to this, and may be a self-threshing type combine harvester.

The present invention is not limited to the above embodiments, and various modifications and changes can be made without departing from the scope of the present invention.

Description of the reference numerals

3 threshing device

6 driver's part

6b steering wheel

6c front pillar

7 driver's cabin

10 Chassis frame

60 driver's part frame

65 rear frame part

66L left longitudinal frame

66R right longitudinal frame

67 connecting frame

68 tilting frame

69 upper supporting frame

69a protective cover

70 cab frame

90 engine

92 muffler

100 combine harvester

843 positioning pin

844 locating hole

1006 driving part

1007 cab

1070 cab frame

1074 vehicle roof

1741 inner roof

1741a lower end position of the rear part of the roof

1078 rear window

1078a upper end position of rear window

1008 air conditioning unit

1841 external air inlet for air conditioner

1851 external air inlet for condenser

1100 combine harvester