Combine harvester

Abstract

To provide a combine harvester that can be converted from a specification without a cabin to a specification with a cabin.SOLUTION: A combine harvester 100 comprises an operator section 6 having a driver's seat 6a, and an operator section frame 60 mounted on a chassis frame 10, where the harvester can be converted from a specification without a cabin to a specification with a cabin 7.SELECTED DRAWING: Figure 3

Description

[Technical Field]

[0001] The present invention relates to a combine harvester, and more particularly to a cabin of a combine harvester. [Background technology]

[0002] Combine harvesters come in two types: one without a cabin, as shown in Patent Document 1, and one with a cabin, as shown in Patent Document 2. However, when purchasing, a user must choose between a cabin-less model and a non-cabin model. If the user selects the non-cabin model, the user must purchase a new cabin model before they can use the combine harvester with the cabin. [Prior art documents] [Patent documents]

[0003] [Patent Document 1] Japanese Patent Application Laid-Open No. 2013-78275 [Patent Document 2] Japanese Patent Application Laid-Open No. 2008-28 Summary of the Invention [Problem to be solved by the invention]

[0004] The present invention has been made in consideration of the above circumstances, and its object is to provide a combine harvester that can be converted from a cabinless specification to a cabin specification after the fact. [Means for solving the problem]

[0005] The combine harvester according to the present invention includes a driver's section having a driver's seat, a cabin covering the driver's section, and a driver's section frame mounted on a chassis frame. The driver's section frame includes a front column frame and a step frame extending rearward from the front column frame. At least one of left and right bottom cabin frames of the cabin frame is disposed above the step frame.

[0006] In the present invention, the bottom cabin frame may be in contact with the step frame.

[0007] In the present invention, the bottom cabin frame may be connected to the step frame.

[0008] In the present invention, a cabin door may be provided on the right side surface of the cabin frame.

[0009] In the present invention, a front connecting frame that connects front portions of the cabin frames may be supported by the front column frame. [Brief explanation of the drawings]

[0010] [Figure 1] Perspective view of a combine harvester [Figure 2] Perspective view of a combine harvester [Figure 3] Perspective view of a combine harvester without a cabin [Figure 4A] Perspective view of the cabin [Figure 4B] Perspective view of the cabin [Figure 5] Perspective view of the driver's section frame [Figure 6] Perspective view of the cabin frame [Figure 7A] A perspective view showing the details of the mounting portion at the left front [Figure 7B] A perspective view showing the details of the mounting portion at the right front [Figure 7C] A perspective view showing the details of the mounting portion at the left rear [Figure 7D] A perspective view showing the details of the mounting part at the right rear [Figure 7E] A perspective view showing the details of the mounting part on the right bottom [Figure 8] Rear view of the driver's seat [Figure 9] Plan view of the driving section DETAILED DESCRIPTION OF THE INVENTION

[0011] An example of a combine harvester according to the present invention will be described.

[0012] [Overall structure of the combine] 1 and 2 are perspective views of a combine harvester 100 according to this embodiment as seen from the front left and front right, respectively. In the drawings, arrows indicate the front-rear, left-right, and up-down directions of the combine harvester 100.

[0013] The combine harvester 100 is mainly composed of a traveling device 1, a reaping device 2, a threshing device 3, a sorting device 4, and a storage device 5.

[0014] The traveling device 1 is provided below the chassis frame 10. The traveling device 1 includes a transmission (not shown) and a pair of crawler devices 11 provided on the left and right. The transmission transmits power from an engine 90 (see FIG. 8) to the crawler devices 11. The crawler devices 11 cause the combine 100 to travel in the forward and backward directions and turn the combine 100 in the left and right directions.

[0015] The reaping device 2 is provided in front of the traveling device 1. The reaping device 2 includes a reel 21, a cutter (cutting blade) 22, an auger (cross-feed screw) 23, and a feeder 24. The reel 21 rotates to guide the stalks in the field to the cutter 22. The cutter 22 cuts the stalks guided by the reel 21. The auger 23 collects the stalks cut by the cutter 22 in a predetermined position. The feeder 24 supplies the stalks reaped by the reaping device 2 to the threshing device 3 via a feeder house 25. The feeder house 25 has a built-in transport conveyor that transports the stalks collected by the auger 23 to the rotor.

[0016] The threshing device 3 is provided behind the reaping device 2. The threshing device 3 comprises a threshing drum, a receiving net, and a front rotor. The threshing drum threshes the stalks by rotating. The threshing drum also transports the stalks by rotating. The receiving net supports the stalks transported by the threshing drum and drops the threshed grain into the sorting device 4. The front rotor sends the stalks transported by the feeder 24 into the threshing device 3. The front rotor not only transports the stalks but also has the function of performing preliminary threshing (pre-threshing).

[0017] The sorting device 4 is provided below the threshing device 3. The sorting device 4 is equipped with a shaking device and a blower (winnower). The shaking device sifts the threshed grains to separate the grains. The grains separated by the shaking device are transported by a grain conveying device and fed into the grain tank 51 through an inlet. The blower assists in sorting the grains by blowing away impurities such as straw dust contained in the threshed grains. The impurities such as straw dust are discharged to the outside from a discharge outlet (not shown) provided behind the sorting device 4.

[0018] The storage device 5 is provided to the right of the threshing device 3 and the sorting device 4. Therefore, the threshing device 3, the sorting device 4, and the storage device 5 are arranged side by side on the left and right above the chassis frame 10. The storage device 5 is equipped with a grain tank 51. The grain tank 51 stores the grains transported from the sorting device 4. The discharge auger 52 is used to discharge the grains in the grain tank 51. The discharge auger 52 is configured to rotate up, down, left, and right when discharging grains, so that the grains can be discharged to any desired location.

[0019] The driver's section 6 is located on the front right side of the machine body, in front of the grain tank 51. The driver's section 6 is equipped with a driver's seat 6a where the operator sits, a steering wheel 6b located in front of the driver's seat 6a, a front column 6c located in front of the steering column that supports the steering shaft of the steering wheel 6b, and the like, and various operating tools such as a gear shift lever, clutch lever, and switches are arranged around these. The driver's seat 6a, steering wheel 6b, front column 6c, etc. of the driver's section 6 (see Figure 3) are covered by a cabin 7.

[0020] The driver's section 6 includes a driver's section frame 60 as shown in Fig. 5. The driver's section frame 60 is placed on the chassis frame 10. The driver's section frame 60 includes a front column frame 61, left and right step frames 62L, 62R extending rearward from the front column frame 61, a floor frame 63 erected from the rear ends of the step frames 62L, 62R, a back plate 64 erected from the floor frame 63, and a rear frame portion 65 supporting the rear end of the back plate 64.

[0021] The front column frame 61 forms the framework of the front column 6c and has a rectangular frame shape in front view. The front column frame 61 is composed of an upper front column frame 611, a lower front column frame 612, a left front column frame 613L, and a right front column frame 613R. The upper front column frame 611 and the lower front column frame 612 extend in the left-right direction. The left front column frame 613L and the right front column frame 613R connect both ends of the upper front column frame 611 and the lower front column frame 612, respectively. The left front column frame 613L and the right front column frame 613R are plate members that are approximately trapezoidal in side view. The front column frame 61 corresponds to a first mounting portion to which the cabin 7 can be mounted.

[0022] The left and right step frames 62L, 62R extend in the front-rear direction. A floor panel (not shown) is laid between the left and right step frames 62L, 62R. A climbing step 621 is attached to the right step frame 62R.

[0023] The floor frame 63 includes a first raised surface 63a extending upward from the rear ends of the left and right step frames 62L, 62R and the floor panel, a first horizontal surface 63b extending rearward from the upper end of the first raised surface 63a, a second raised 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 raised surface 63c. The driver's seat 6a is placed on the upper part of the floor frame 63, more specifically, on the upper part of the first horizontal surface 63b. An engine 90 (see FIG. 8) is disposed below the floor frame 63.

[0024] The back plate 64 stands upright from the upper end of the second rising surface 63c of the floor frame 63. The back plate 64 slopes rearward as it goes upward, and its rear end is connected to the upper end of the rear frame portion 65. An air cleaner 91 for the engine 90 is housed in the space surrounded by the back plate 64 and the second horizontal surface 63d of the floor frame 63 (see Figure 8).

[0025] 8, the rear frame portion 65 includes left and right vertical frames 66L, 66R arranged behind the engine 90, a connecting frame 67 (corresponding to the connecting portion) connecting the upper parts of the left and right vertical frames 66L, 66R, a pair of inclined frames 68, 68 (corresponding to the inclined portion) extending upward from the rear part of the connecting frame 67 while inclining forward, and an upper support frame 69 (corresponding to the second mounting portion) provided on the upper part of the inclined frame 68. The left and right vertical frames 66L, 66R, the connecting frame 67, the pair of inclined frames 68, 68, and the upper support frame 69 are welded together.

[0026] The left and right vertical frames 66L, 66R are arranged side by side and stand upright from the chassis frame 10. The connecting frame 67 has a rectangular plate shape in a plan view, and its rear end is supported by the vertical frames 66L, 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 at an angle from the rear of the connecting frame 67 toward the rear end of the back plate 64.

[0027] The upper support frame 69 is arranged so as to span the top of the pair of inclined frames 68, 68. The upper support frame 69 is located forward of the left and right vertical frames 66L, 66R. The upper support frame 69 is connected to the rear end of the back plate 64. A protective cover 69a that protects the front side of the muffler 92 is provided at the left end of the upper support frame 69 (see Figure 8). The protective cover 69a is also connected to the threshing device 3. By connecting the protective cover 69a to the threshing device 3, the driver's unit frame 60 is reinforced.

[0028] By configuring the driver's section frame 60 as described above, the engine 90 can be disposed below the driver's section 6 while firmly supporting the cabin 7 and the grain tank 51 can be made larger.

[0029] The cabin 7 includes a cabin frame 70 as shown in Fig. 6. The cabin frame 70 includes left and right bottom cabin frames 71, 72, left and right front cabin frames 73, 74, left and right rear cabin frames 75, 75, a door support frame 76, and a roof frame 77.

[0030] A windshield 7a (see FIG. 4A) is provided on the front surface of the cabin frame 70. A side panel 7b (see FIG. 4B) including a left window is provided on the left side surface of the cabin frame 70. A cabin door 7c (see FIG. 4A) including a right window is provided on the right side surface of the cabin frame 70. A roof 7d (see FIG. 4A) is provided on the top surface of the cabin frame 70.

[0031] Furthermore, when the cabin 7 is attached to or detached from the driver's section 6, the cabin 7 is suspended from above. The cabin 7 is suspended using a suspension bracket 7e (see FIG. 4B) provided on the left rear of the cabin frame 70 and a handrail 7f (see FIG. 4A) for boarding and disembarking provided on the right front of the cabin frame 70. The suspension bracket 7e is provided on the upper part of the left rear cabin frame 75 of the cabin frame 70, protruding to the left. The handrail 7f is provided on the right front cabin frame 74 of the cabin frame 70.

[0032] The left bottom cabin frame 71 forms the bottom of the left side of the cabin 7. The left bottom cabin frame 71 extends horizontally rearward from the front of the cabin 7 and then extends upward at an angle. The front end of the left bottom cabin frame 71 is connected to the lower end of the left front cabin frame 73. The rear end of the left bottom cabin frame 71 is connected to the lower part of the left rear cabin frame 75.

[0033] The right bottom cabin frame 72 forms the bottom of the right side of the cabin 7. The right bottom cabin frame 72 is plate-shaped and extends horizontally in the front-to-rear direction. The front end of the right bottom cabin frame 72 is connected to the lower end of the right front cabin frame 74. The rear end of the right bottom cabin frame 72 is connected to the lower end of the door support frame 76. When the cabin 7 is attached to the driver's section 6, the right bottom cabin frame 72 is located above the right step frame 62R.

[0034] The left front cabin frame 73 and the right front cabin frame 74 extend vertically and are disposed on the left and right sides of the front of the cabin 7, respectively. The upper ends of the left front cabin frame 73 and the right front cabin frame 74 are connected to a roof frame 77. The cabin 7 is disposed so that the bottom of the right side is lower than the bottom of the left side. Therefore, the right front cabin frame 74 is longer downward than the left front cabin frame 73. The left front cabin frame 73 and the right front cabin frame 74 are connected by a front connecting frame 78. The front connecting frame 78 has left and right protruding portions 78a, 78b that protrude forward from the left front cabin frame 73 and the right front cabin frame 74, and a curved portion 78c that connects the front ends of the left and right protruding portions 78a, 78b and curves forward. When the cabin 7 is attached to the driver's section 6, the front connecting frame 78 is located in front of the upper front column frame 611.

[0035] The left and right rear cabin frames 75, 75 extend in the vertical direction and are disposed on the left and right rear sides of the cabin 7. The upper ends of the rear cabin frames 75 are connected to the rear part of the roof frame 77. The lower ends of the left and right rear cabin frames 75 are connected by a rear connecting frame 79. When the cabin 7 is attached to the driver's section 6, the rear connecting frame 79 is located above the upper support frame 69.

[0036] The door support frame 76 extends upward from the bottom of the right side of the cabin 7, then extends rearward while slanting, and then extends upward again. The upper end of the door support frame 76 is connected to the rear part of the roof frame 77. The cabin door 7c is rotatably supported by the door support frame 76.

[0037] The roof frame 77 forms the ceiling of the cabin 7. The roof frame 77 has a rectangular frame shape in a plan view. The front of the roof frame 77 protrudes further forward than the left and right front cabin frames 73, 74. The roof frame 77 is covered with a roof 7d.

[0038] Next, a detailed description will be given of the mounting structure for mounting the cabin 7 to the driver's section 6. The cabin 7 is mounted using five mounting parts 81 to 85 located at the left front, right front, left rear, right rear, and right bottom.

[0039] The left front mounting portion 81 is located at the left front portion of the cabin frame 70, specifically, at the left end portion of the front connecting frame 78. The mounting portion 81 includes an upper bracket 811 provided at the lower end of the front connecting frame 78 of the cabin frame 70, and a lower bracket 812 provided on the side surface of the left front column frame 613L of the driver's section frame 60.

[0040] The upper bracket 811 is fixed to the lower part of the left protrusion 78a of the front connecting frame 78. The upper bracket 811 is a member having two mutually perpendicular surfaces (a side surface 811a and a bottom surface 811b) formed so that these two surfaces form an L shape in a front view. The upper end of the side surface 811a of the upper bracket 811 is connected to the lower part of the left protrusion 78a. Two through holes are formed in the bottom surface 811b of the upper bracket 811.

[0041] The lower bracket 812 is fixed to the left side surface of the left front column frame 613L. The lower bracket 812 includes a first bracket member 812a that is fastened to the left side surface of the left front column frame 613L with a bolt, and a second bracket member 812b that is welded to the upper part of the first bracket member 812a. The first bracket member 812a is L-shaped in a plan view and supports the second bracket member 812b from below. The second bracket member 812b is L-shaped in a side view and has two through holes formed in its upper surface. The upper bracket 811 can be attached to the lower bracket 812 by inserting bolts 813 into the two through holes of the second bracket member 812b and into two through holes in the lower surface 811b of the upper bracket 811 and fastening them with nuts 814. This allows the front connecting frame 78 of the cabin frame 70 to be attached to the left front column frame 613L of the driver's section frame 60.

[0042] A rectangular plate member 815 is disposed above the lower surface 811b of the upper bracket 811. A vibration-isolating rubber plate is disposed between the plate member 815 and the lower surface 811b of the upper bracket 811. This prevents vibrations from the lower bracket 812 from being transmitted to the upper bracket 811 via the bolts 813. Similarly, a vibration-isolating rubber plate is disposed between the lower surface 811b of the upper bracket 811 and the upper surface of the second bracket member 812b. This prevents vibrations from the lower bracket 812 from being transmitted directly to the upper bracket 811. Although a detailed description will be omitted, this type of vibration-isolating support structure is also employed in the mounting portions 82 to 85 at the right front, left rear, right rear, and right bottom.

[0043] A bolt 816 provided on the left front portion of the second bracket member 812b of the lower bracket 812 is used to attach a work light that illuminates the intake port to the feeder 24.

[0044] The right front mounting portion 82 is located at the right front portion of the cabin frame 70, specifically, at the right end portion of the front connecting frame 78. The mounting portion 82 includes a mounting stay 821. The mounting stay 821 is a plate that is approximately Z-shaped in a plan view. A front surface 821a of the Z-shaped mounting stay 821 is fixed to the left side surface of the right front column frame 613R of the driver's unit frame 60 by two bolts 822. More specifically, the front surface 821a of the mounting stay 821 is fixed to a mounting plate 824 that protrudes leftward from the left side surface of the right front column frame 613R. Meanwhile, a rear surface 821b of the Z-shaped mounting stay 821 is fixed to the left side surface of the right front cabin frame 74 of the cabin frame 70 by two bolts 823. More specifically, the rear surface 821b of the mounting stay 821 is fixed to a mounting plate 825 that protrudes leftward from the left side surface of the right front cabin frame 74. The right front cabin frame 74 of the cabin frame 70 can be attached to the right front column frame 613R of the driver's section frame 60 by the mounting stay 821.

[0045] The left rear mounting portion 83 is located at the left rear of the cabin frame 70, specifically, at the left end of the rear connecting frame 79. The mounting portion 83 includes a left bracket 831 (see FIG. 5 ) provided at the left end of the upper support frame 69 of the driver's section frame 60. The left bracket 831 is provided to protrude rearward from the upper support frame 69, and has two bolt holes formed on its upper surface. Meanwhile, two through holes are formed on the left end of the rear connecting frame 79. The rear connecting frame 79 can be attached to the left bracket 831 by inserting bolts 832 into the two through holes of the rear connecting frame 79 and fastening the bolts 832 to the bolt holes in the left bracket 831. In this way, the rear connecting frame 79 of the cabin frame 70 can be attached to the upper support frame 69 of the driver's section frame 60.

[0046] The right rear mounting portion 84 is located at the right rear of the cabin frame 70, specifically, at the right end of the rear connecting frame 79. The mounting portion 84 includes a right bracket 841 (see FIG. 5 ) provided at the right end of the upper support frame 69 of the driver's section frame 60. The right bracket 841 is provided to protrude rearward from the upper support frame 69 and has two bolt holes formed on its upper surface. Meanwhile, two through holes are provided on the right end of the rear connecting frame 79. The rear connecting frame 79 can be attached to the right bracket 841 by inserting bolts 842 into the two through holes of the rear connecting frame 79 and fastening the bolts 842 to the bolt holes in the right bracket 841. In this way, the rear connecting frame 79 of the cabin frame 70 can be attached to the upper support frame 69 of the driver's section frame 60.

[0047] 5, a positioning pin 843 that protrudes upward is provided on the top surface of the right bracket 841. The positioning pin 843 is provided rearward of the two bolt holes formed in the right bracket 841 and is located between the two bolt holes in a rear view. Meanwhile, a positioning hole 844 corresponding to the positioning pin 843 is formed in the right end of the rear connecting frame 79 as shown in FIG. 6. By providing a positioning section consisting of the positioning pin 843 and the positioning hole 844, it is possible to first perform positioning and then perform final fixing of each mounting section, and the cabin 7 will not shift relative to the driver's section 6. Furthermore, by positioning the positioning pin 843 between the two bolt holes, it is possible to easily align the two bolt holes with the two through holes formed in the rear connecting frame 79.

[0048] The right bottom mounting portion 85 is located on the right bottom cabin frame 72 of the cabin frame 70. The right bottom cabin frame 72 has two through holes formed in the front-to-rear direction. Meanwhile, the right step frame 62R of the driver's section frame 60 has two bolt holes formed in the front-to-rear direction. The right bottom cabin frame 72 of the cabin frame 70 can be attached to the right step frame 62R of the driver's section frame 60 by inserting bolts 851 into the two through holes of the right bottom cabin frame 72 and fastening the bolts 851 to the bolt holes of the right step frame 62R.

[0049] The above-described mounting portions 81 to 85 allow the cabin frame 70 to be securely attached to the driver's section frame 60. The front column frame 61 and the rear frame portion 65 can firmly support the cabin 7 from the front to the rear and from the left to the right, and vibration of the cabin 7 can be suppressed even when the cabin 7 is attached to the driver's section 6 later.

[0050] As shown in Figure 9, with the cabin 7 attached to the driver's section 6, a sponge 6d is interposed between the front column 6c of the driver's section 6 and the front connecting frame 78 of the cabin frame 70. The sponge 6d is arranged continuously on the front surface and both side surfaces of the front column 6c. A portion of the sponge 6d is crushed from above by the front connecting frame 78. By arranging the sponge 6d, it is possible to fill in the gap that occurs between the outer surface of the front column 6c and the inner surface of the front connecting frame 78.

[0051] In this embodiment, an example of a normal type combine harvester is shown, but the present invention is not limited to this. It may also be a combination.

[0052] The present invention is not limited to the above-described embodiment, and various improvements and modifications can be made without departing from the spirit of the present invention.

[0053] [Note] As described above, the combine harvester of this embodiment comprises a front column that supports an operating member in front of the driver's seat, and a rear frame section that stands upright from the chassis frame behind the driver's seat, and the front column has a first mounting section to which a cabin can be attached, and the rear frame section has a plurality of vertical frames that stand upright from the chassis frame and a second mounting section that is attached to the vertical frames and to which the cabin can be attached.

[0054] In this embodiment, a threshing unit may be provided, and the second mounting portion may be connected to the threshing unit.

[0055] In this embodiment, an engine is provided below the driver's seat, and the rear frame portion has the plurality of vertical frames arranged behind the engine, a connecting portion connecting the upper parts of the plurality of vertical frames, an inclined portion extending upward from the rear of the connecting portion in an attitude inclined forward, and the second mounting portion provided on the upper part of the inclined portion, and the cabin may be attached to the second mounting portion while being placed on the upper part of the second mounting portion.

[0056] In the present embodiment, the rear frame portion and the cabin may be provided with a positioning portion that defines the position of the cabin relative to the rear frame portion.

[0057] In this embodiment, the second attachment portion may be provided with a protective cover that protects the front side of the muffler.

[0058] According to this embodiment, a combine harvester without a cabin can be retrofitted to include one with a cabin. Furthermore, the front column and multiple vertical frames provide firm support for the cabin from the front, rear, left, and right, suppressing cabin vibration even when a cabin is retrofitted. [Explanation of symbols]

[0059] 6. Driving section 6a Driver's seat 7 Cabin 7c Cabin door 60 Driver's section frame 61 Front column frame 62R Right Step Frame 62L Left step frame 70 Cabin Frame 72 Bottom cabin frame 78 Front connecting frame

Claims

1. a driver's section having a driver's seat; a driver's section frame mounted on the chassis frame, A combine harvester that can be converted from a model without a cabin to a model with a cabin.

2. The cabin has a cabin frame, The cabin frame is attached to the driver's section frame. The combine harvester according to claim 1.

3. The combine harvester according to claim 2 , wherein a cabin door is provided on a right side surface of the cabin frame.

Images