JP2000106739A - Revolvable device at reaping part in combine harvester - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a combine harvester capable of keeping a distance between a pulling-up part and an operating seat at a prescribed distance and comfortably keeping a front viewing in a head-feeding combine harvester. SOLUTION: This revolvable device at a reaping part in a combine harvester is composed of a grain culm pulling-up device 39 pulling up plural strings of grain culm, a reaping blade device reaping the plural strings of grain culm pulled up by the pulling-up device and an upper and lower carrier carrying the grain culm reaped by the reaping blade device to a threshing part side. In the revolvable device, a revolvable fulcrum is provided at a place higher than an upper face of the pulling-up part 39 and left of a side column in a right view and a pulling-up and revolving pipe connecting one end of the fulcrum to the upper side of the pulling-up part, and otherwise, the connecting part of the pulling-up part 39 to a reaping part frame 32 is made to be revolvable and a driving shaft case revolvable around a reaping and driving shaft is connected to a pulling-up and laterally driving shaft 93 to make the driving case freely stretchable.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a combine, and more particularly, to a rotating device in a cutting section of a self-removing combine.

[0002]

2. Description of the Related Art Conventionally, in a harvesting unit of a combine,
The reaping unit moves up and down around the rotation fulcrum of the reaping unit frame by expansion and contraction of the reaping lifting cylinder.

[0003]

However, in the combine having such a structure, the cutting pivot is set below the threshing supply port, so that the cutting unit rotates as the cutting unit frame rotates. Is tilted upward, and rises to a position where the support frame of the raising portion does not contact the driver's seat. Therefore, there is a problem that the raising portion and the driver's seat come closer to each other when the reaping portion is raised, so that the distance between the driver's seat and the reaping portion is large, which causes poor front visibility.

[0004]

SUMMARY OF THE INVENTION The present invention has been made in order to solve the above-mentioned problems, and has the following object to provide a rotating device in a reaping section of a combine. That is, a grain stalk raising device for raising a plurality of grain stalks, a cutting blade device for cutting the plurality of grain stalks raised by the grain stalk raising device, and a grain stalk cut by the cutting blade device. In the harvesting section of a combine having upper and lower transporting devices for transporting to the threshing section side, a rotatable fulcrum is provided at a position higher than the upper surface of the raising section and to the left of the side column in front view, and one end of the fulcrum is raised. The raising part is provided with a pivoting pipe which is connected to the upper part of the cutting part. On the other hand, the raising part makes the connecting part with the reaping part frame rotatable, and raises the driving shaft case which is rotatable around the cutting drive shaft and raises the lateral drive. It is a rotating device in a reaping part of a combine which connects a shaft and the drive shaft case is configured to be extendable and contractible.

[0005] Further, a grain stem raising device for raising a plurality of grain stems, a cutting blade device for cutting the plurality of grain stems raised by the grain stem raising device, and a cutting blade device cut by the cutting blade device. In the harvesting section of the combine having upper and lower conveyors for conveying the culm to the threshing section side, a rotatable fulcrum is provided higher than the upper surface of the raising section and to the left of the side column in front view, Is raised and one end is connected to the lateral drive shaft.On the other hand, the raised portion makes the connection portion with the cutting unit frame rotatable, and the drive shaft case that is rotatable around the cutting drive shaft is raised and the horizontal drive shaft is raised. Are connected to each other, and the drive shaft case is configured to be extendable and contractible.

[0006]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS The overall structure of a combine is described below with reference to the drawings. FIG. 1 is an overall side view of a three-row combine according to the present invention, and FIG. 2 is a front view of the three-row combine. In the figure, (1) is a track frame on which a traveling crawler (2) as a traveling section is mounted,
(3) a machine frame erected on the track frame (1);
(4) A threshing unit in which a feed chain (5) is stretched to the left and a handling drum (6) and a processing drum (7) are built in, (8).
Is a mowing unit including a cutting blade (40) and a grain culm transport mechanism,
(9) is a straw processing unit provided with a straw chain (10) and a straw cutter (11), and (12) is provided with a driver's seat (13), a driving operation unit (14), and a side column (14a). An operation unit, (15) a motor unit incorporating an engine (16), (17) a grain tank, (18) a fryer, (1)
9) is an oscillating sorter provided with a blower (20).
Threshing the culm cut in the cutting section (8) in the threshing section (4),
The waste is discharged out of the machine through the waste chain (10) and the waste cutter (11) of the waste processing unit (9), and the threshed is removed by the rocking sorting unit (19). The grains are stored in a grain tank (17) through a fryer (18), and fine dust is discharged to the outside through a blower (20). In addition, (21) is a hydraulic mowing lift cylinder which raises and lowers the mowing part (8) via the mowing part frame (32).

As shown in FIGS. 3 and 4, the cutting section (8) includes a left and right drive shaft case (31) serving as left and right vertical frames at the rear end of a lower frame (30) formed in a substantially rectangular frame shape.
L) (31R) is erected from the front to the rear with a low inclination to form the mowing part frame (32). At the front end of the lower frame (30), four lower support rods (33) are provided at predetermined intervals and project forward, and a weeding body (34) is attached to the tip of each lower support rod (33). , Forming a three-row planted grain culm introduction path (35).

On the upper surface of each lower supporting rod (33) behind the weeding body (34), between the upper end of the raising part supporting rod (36) and the upper end of the left and right drive shaft cases (31L) (31R). In addition, a raising portion (39) provided with a raising belt (38) having a plurality of raising tines (37) projecting therefrom is erected at a front-to-back and rear-to-back height, and the rotation of the raising belt (38) is performed. The cereal stem that has been raised by movement and laid down by the tine (37) is scooped and raised.

A cutting blade device (40) is arranged on the lower surface of the rear end portion of the lower support rod (33) so that the planted grain culm introduction path (3) is formed.
5) The root of the planted cereal stem that has moved backward is cut off. Behind the raising part (39), the stalks cut by the cutting blade device (40) are fed with the feed chain (5).
Right and left lower transfer chains (60L) (60L)
R).

The lower left transfer chain (60L) is constructed as follows. That is, a left vertical frame (61L) is erected on the upper surface on the left side of the lower frame (30), and a middle part of the left vertical frame (61L) and a lower support rod (3
3), a left-side rotating support member (62L) bent in a substantially L-shape is provided between the left-side rotating member and the left-side rotating member support rod (62L).
A rotating body (63) is supported in a suspended state in the middle of
A left front sprocket (64) is provided on the lower part of the outer periphery of the rotating body (63).
L), the left front sprocket (64L), the left driving sprocket (65L), and the tension roller (6).
6) Wrap the lower left transfer chain (60L) between
By rotating the lower left transfer chain (60L) clockwise, the cut culm is transferred diagonally to the upper right.

The lower right transfer chain (60R) is configured as follows. That is, the pipe frame (67)
Is arranged diagonally from the lower right front inside the reaper (8) to the rear upper left, and the front end of the pipe frame (67) is supported by the upper part of the lower right support rod (33). (67) The middle part of the left drive shaft case (31R)
We support in the middle.

The pipe frame (67) is bent stepwise with the front part (67F) as the upper part and the rear part (67R) as the lower part in a side view. A right-hand rotating body (63) having a right front sprocket (64R) formed on its outer periphery is supported in a suspended state to support the right front sprocket (64R) and the pipe frame (6).
7) The lower right transfer chain (60R) is wound between the rear sprocket (68), the right drive sprocket (69), and the tensioner (70) that are pivotally supported at the rear end. By turning left, the harvested culm is transported diagonally to the upper left.

A rotating body (63) is also provided behind the central culm introduction path (35), and the central rotating body (6) is provided.
The right rotation of 3) moves the harvested culm to the lower right transport chain (6).
(0R) direction. Therefore, the harvested culm of the right-hand line and the center line is transferred to the lower right transport chain (60
R) Merge at a position near the front of the middle part, and the cut culm of the left strip merges at the rear end of the lower right transport chain (60R),
It will be delivered to the following feed chain (5).

In the lower right transfer chain (60R), the rear part (67R) of the pipe frame (67).
Are arranged close to and parallel to the inside of the lower right transfer chain (60R), and a junction (71) from the rear end of the lower right transfer chain (60R) with the central strip is provided on the outer peripheral surface of the rear portion (67R).
The lower transfer chain (72) extended to the right is fixed by welding or the like, and the outer surface of the lower transfer chain (72) is slid in contact with the inner surface of the lower right transfer chain (60R) so as to be in contact with the right strip and the center. The harvested grain culm, which has increased the transported amount due to the joining of the strips, is surely held. In the drawing, (73) is a raking belt pulley formed on the upper part of the outer periphery of the rotating body (63),
(74) is a left lower transfer chain guide, (75) is a left tensioner, (76) is a drive shaft case with a center raised, (7)
7) is an ear tine, (78) is a chain case, (79)
Denotes an upper transfer device, and (80) denotes a star wheel.

FIG. 5 shows a first embodiment of a rotary device of a reaping unit which can maintain a good front view without keeping the distance between the driver's seat and the reaping unit in the combine having the above configuration. It will be described based on. FIG. 5 is a diagram illustrating a link mechanism of the rotating device of the mowing unit. The reaping unit (8) is pivoted about a pivot (A) via a hydraulic reaping elevating cylinder (21) pivotally attached to the reaping unit frame (32). 39) The upper surface of the driver's seat (13)
A suitable distance is set in advance so that the front field of view is maintained without approaching, and based on the distance, the body of the body behind the driver's seat (13), that is, the rotation fulcrum ( B) is provided. An elevating pivot pipe (91) for connecting the pivot (B) and the upper end of the erect part (39) is provided, but the pivot (B) is higher than the upper surface of the erect part (39). Set to position.

The left and right drive shaft cases (31) are provided upright at the end of the lower frame (30) of the mowing section frame (32).
L) (31R) The upper end is attached to the raising portion (39), and transmits driving force to the plurality of raising tines (37) via the raising belt (38) of the raising portion (39). The driving force of the third cutting drive shaft (92) is applied to the cutting blade device (4).
0) is provided. The left and right drive shaft cases (31L) and (31R) are configured to be expandable and contractible by spline fitting (hereinafter, simply referred to as “drive shaft case (31)” for convenience).

In the rotating device of the mowing section having such a configuration, as the mowing section (8) rotates around the pivot (A), the mowing section frame (32) and the elevating rotation are rotated. Due to the difference in the inclination angle and the length of each pipe (91), the pivot pipe (91) is raised in the cutting state.
The shape of the link mechanism formed by the drive shaft case (31) having one end as a common pivot point and the raising portion (39) collapses, but it is expandable and contractible by spline fitting in order to correct this deformation. Extend the drive shaft case (31). Thus, even if the mowing part (8) rises due to the extension of the drive shaft case (31), the set distance between the upper surface of the raising part (39) and the driver's seat (13) is ensured, and the operator's seat is provided. The front view is sufficiently secured.

In the three-row cutting combine provided with the above link mechanism, the raising part (39) and the cutting part frame (3)
When the included angle (θ) with 2) was actually set, a numerical value of 71 degrees was obtained in the reaping state, and 81 degrees was obtained at the highest point of the reaping section, and the technical meaning of providing the rotation fulcrum (B) was obtained. The pivot point (B) is supported by the side column (1
4a) It has been clarified that since it is provided on the left side, it does not interfere with the harvesting conveyance. Further, since the raising portion (39) makes the upper end connecting portion of the raising portion support rod (36) on the mowing portion frame (32) rotatable, the tine starting end position hardly changes and the performance is stable. I do. Further, since two pivot points (A) and (B) are provided, the function of preventing the reaping unit from rolling laterally is achieved.

Next, a description will be given of a second embodiment of the rotating device of the mowing section with reference to FIG. FIG. 6 is a diagram showing a link mechanism of the rotating device of the mowing unit. That is, as in the first embodiment, the basic link mechanism raises the rotation fulcrum (B) of the rotation pipe (91) higher than the upper surface of the raising portion (39), and the left side of the side column (14a) in front view. And one end of the fulcrum (B) is raised to raise the horizontal drive shaft (9).
3) While being connected to the center, the raising portion (39)
Is a raising part support rod (36) on the mowing part frame (32).
Of the upper end of the cutting drive shaft (9)
2) The drive shaft case (3
1) and the horizontal drive shaft (93) is connected.

A link mechanism different from that of the first embodiment is as follows.
In addition to providing the second drive shaft (91a) in the rotation pipe (91), the first drive shaft (94) is raised between the rotation fulcrum (A) and the rotation fulcrum (B). ) Is provided. Since the first drive shaft (94) is provided, the mowing unit (8) is rotated by the first drive shaft (95) that pivotally connects the rotation fulcrum (A) as a drive source. Raised via the fulcrum (B) and raised in the rotating pipe (91) and transmitted to the second vertical drive shaft (91a). Next, the driving force of the raised second vertical drive shaft (91a) is transmitted to the two systems via the raised horizontal drive shaft (93). That is, the first system is transmitted to the raising unit (39), and the driving force is transmitted to the raising tine (37), and the second system is transmitted to the drive shaft case (3).
It is transmitted to 1) and used as a driving force of the cutting blade device (40).

In the second embodiment provided with such a link mechanism, even if the mowing part (8) rises due to the extension of the drive shaft case (31), the upper surface of the raising part (39) and the driver's seat ( 13), the set distance is ensured, and the forward visibility of the operator is sufficiently ensured. Further, since the pivot point (B) is provided on the left side of the side column (14a), it does not obstruct the harvesting conveyance. Further, since the raising portion (39) makes the upper end connecting portion of the raising portion support rod (36) on the mowing portion frame (32) rotatable, the tine starting end position hardly changes and the performance is stable. I do. Further, since two pivot points (A) and (B) are provided, a function of preventing the reaping unit from rolling laterally is achieved. And since it has the structure provided with the link mechanism peculiar to the second embodiment, that is, it is raised inside the rotating pipe (91) and the second drive shaft (91a) is inserted therethrough, the shaft length does not change and the parts are not changed. The shape is easy and mass production is possible, contributing to cost reduction.

Next, a third embodiment of the rotating device of the mowing unit will be described with reference to FIG. The third embodiment is a modification of the second embodiment, and its driving force transmission system employs a link configuration basically similar to that of the second embodiment. That is, the second drive shaft (91) is raised in the rotation pipe (91).
a), the rotation fulcrum (A) and the rotation fulcrum (B)
And a first driving shaft (94) is provided between the first and second cutting shafts.
Using the drive shaft (95) as a drive source, the drive shaft (95) is raised via the rotation fulcrum (B) and is raised in the rotation pipe (91) and transmitted to the second vertical drive shaft (91a). Next, the driving force of the second vertical drive shaft (91a) is raised and transmitted to the raising portion (39) via the horizontal drive shaft (93), and the raised tine (3) is driven.
The driving force is transmitted to 7).

However, while the transmission of the driving force of the cutting blade device (40) in the second embodiment is via the driving case (31), the transmission of the driving force of the third embodiment is in the cutting frame (32). ), The cutting second drive shaft (9)
The driving force is transmitted via 6) to drive the cutting blade device (40). According to this driving force transmission method, the driving force transmission shaft in the driving shaft case (31) is removed, and the driving force is dispersed to the parallelogram link mechanism, so that the balance of the link mechanism is balanced and the driving shaft is balanced. The expansion and contraction action of the case (31) operates smoothly.

Another embodiment will be described with reference to FIG. The conventional combine harvesting unit is configured to move up and down around a rotation fulcrum of a cutting frame by raising and lowering a cutting lifting cylinder, but in such a configuration, when the cutting height is changed, There is a problem that the relative positions of the grass plate and the cutting blade with respect to the ground change. In order to solve this problem, the following provides a combine harvester.

That is, the turning fulcrum of the mowing portion frame (32) is (A), the mounting portion of the drive shaft case (31) to the mowing portion frame (32) is the turning fulcrum (C), and the drive shaft case (31). The pivoting point (D) is defined as a pivotal fulcrum (D), and an imaginary line parallel to the side connecting the pivotal fulcrum (A) and the pivotal fulcrum (C) is defined as the pivotal fulcrum (D).
A point extending from the rotation fulcrum (A) and (C) by a distance equal to the length connecting the rotation fulcrum as a starting point is defined as (B), and sides (A) and (C) connecting the rotation fulcrum (A) and (C), Similarly, side (C)
(D), the side (D) (B) and the side (B) (A) are formed as parallel links. In addition, the mowing part frame (32) is provided with the structure which can be extended and contracted by spline connection.

In the link mechanism having such a configuration, the cutting unit (8) is turned upward as the cutting unit frame (32) is rotated around the rotation fulcrum (A) by the cutting lifting cylinder (21). The drive shaft case (31) of the raising portion (39) is tilted up, and the raising portion (39) is raised.
Is moved to the position of the fulcrum (D1), the distance between the sides (A) and (C) connecting the fulcrums (A) and (C), that is, the reaping part frame (32) is slid with the position as the fulcrum. (Rotation fulcrum (C) moves to (C1) and (D) moves to (D1), respectively), and the weeding body (34) can be directed upward.

According to the rotating device of the mowing section having the above-described configuration, even when the mowing height is changed, the raising angle is kept constant, and the change of the conveying angle from the weeding body to the mowing blade is maintained. Absent. Further, even if the raised horizontal axis raises the mowing portion, it does not come down rearward, so that the driver's seat can be laid out widely and the front visibility can be improved. In addition, the present invention has an effect that the weeds can be raised when traveling or climbing over a ridge to secure a climbing angle. Although the first to third embodiments and other embodiments have been described in principle using the link mechanism, the present invention is not limited to the three-row cutting combine.

[0028]

As described above, according to the first aspect of the present invention, in the reaping unit of the combine, since the pivot point is set high, the raising unit does not approach the driver's seat even when the reaping rises. Also, since the pivot point is provided on the left side of the side column, it does not hinder the harvesting conveyance. Further, since the raising portion rotates about the connection portion with the reaping portion frame as a fulcrum, the tine starting end position hardly changes and the performance is stabilized.
Further, since two rotation fulcrums are provided, it is possible to achieve effects such as prevention of lateral vibration of the cutting unit. further,
According to the second aspect, similarly to the first aspect, in order to set the rotation fulcrum high, the raising portion does not approach the driver's seat even when the mowing is raised, and the rotation fulcrum is provided on the left side column. Therefore, it does not interfere with harvesting and transport. Further, since the raising portion rotates about the connection portion with the reaping portion frame as a fulcrum, the tine starting end position hardly changes and the performance is stabilized. In addition, since two pivot points are provided, in addition to the effect of preventing the swaying of the reaping section, the drive shaft is inserted through the pipe and raised, so that the shaft length does not change and the component shape is maintained. Are easy to achieve.

[Brief description of the drawings]

FIG. 1 is a side view of a combine.

FIG. 2 is a front view of the combine.

FIG. 3 is a side view of the reaper.

FIG. 4 is a plan view of a reaper.

FIG. 5 is a link mechanism of the mowing unit rotating device according to the first embodiment;

FIG. 6 is a link mechanism of the mowing unit rotating device according to the second embodiment.

FIG. 7 is a link mechanism of a cutting and rotating device according to a third embodiment;

FIG. 8 is a link mechanism of a mowing rotation device according to another embodiment.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Track frame 2 Traveling crawler 3 Track frame 8 Cutting part 12 Operating part 13 Driver's seat 21 Hydraulic cutting and raising / lowering cylinder 31L Left drive shaft case 31R Right drive shaft case 32 Cutting part frame 34 Lower support rod 37 Tine 39 Raised part 40 Cutting blade Apparatus 60L Lower left transfer device 60R Lower right transfer device 67 Pipe frame 73 Raised belt pulley 77 Ear tine 80 Star wheel 91 Raised rotating pipe 91a Raised second drive shaft 92 Cutting third drive shaft 93 Raised horizontal drive shaft 94 Raised first drive shaft 95 Cutting first drive shaft 96 Cutting second drive shaft

Claims (2)

[Claims] 1. A grain stem raising device for raising a plurality of grain stems, a cutting blade device for cutting the plurality of grain stems raised by the grain stem raising device, and a cutting blade device cut by the cutting blade device. In the harvesting section of the combine having upper and lower conveyors for conveying the culm to the threshing section side, a rotatable fulcrum is provided higher than the upper surface of the raising section and to the left of the side column in front view, A raising shaft is provided to raise one end of the mowing portion and connect the upper portion to the upper portion.On the other hand, the raising portion makes the connecting portion to the mowing portion frame rotatable, and a drive shaft case rotatable around the mowing drive shaft. A turning device in a harvester of a combine, wherein the drive shaft case is configured to extend and retract so as to be connected to a horizontal drive shaft. 2. A grain stem raising device for raising a plurality of grain stems, a cutting blade device for cutting the plurality of grain stems raised by the grain stem raising device, and a cutting blade device cut by the cutting blade device. In the harvesting section of the combine having upper and lower conveyors for conveying the culm to the threshing section side, a rotatable fulcrum is provided higher than the upper surface of the raising section and to the left of the side column in front view, Is raised and one end is connected to the lateral drive shaft.On the other hand, the raised portion makes the connection portion with the cutting unit frame rotatable, and the drive shaft case that is rotatable around the cutting drive shaft is raised and the horizontal drive shaft is raised. And a rotating device in a harvester of the combine, wherein the drive shaft case is configured to be extendable and retractable.