JP2000209923A - Revolving apparatus in reaping part of combine harvester - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a combine harvester capable of maintaining a distance between a raising part and a driver's seat in rising of a reaping part and excellently keeping a front view in a head-feeding combine. SOLUTION: In this revolving apparatus of a reaping part of a combine harvester equipped with a grain culm raising apparatus for raising grain culms on a plural number of rows, a reaper 40 for reaping grain culms on the plural number of rows raised by the grain culm raising apparatus and an upper and an lower transporting apparatuses for transporting the grain culms reaped by the reaper 40 to a threshing part, a hydraulic cylinder 90 is connected to a rotation support of a reaping part and to a raising and horizontally driving part to the grain culm raising apparatus. An elastic raising and longitudinally driving part is connected to the raising and horizontally driving part. The hydraulic cylinder 96 is equipped with a lifting and lowering position sensor 93.

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 reaping unit of a combine, the reaping unit is moved up and down around a rotation fulcrum of a reaping unit frame by expansion and contraction of a 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 harvester of the combine having upper and lower transporting devices for transporting to the threshing unit side, while connecting the hydraulic cylinder to the harvesting unit rotation fulcrum and the raising horizontal drive unit of the grain stem raising device,
A pivoting device in a combine harvester, wherein an extendable vertical drive unit is connected to the horizontal drive unit. Further, there is provided a rotating device in a reaping unit of a combine, wherein a lifting position sensor is provided on a hydraulic cylinder.

[0005]

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 cylinder (6) and a processing cylinder (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 having a built-in engine (16), (17) a grain tank, (18) a fryer, (1)
9) is an oscillating sorting unit provided with a blower (20), and while traveling on a field by operation of the driving operation unit (14),
Threshing the stalks harvested in the cutting section (8) in the threshing section (4),
The waste straw is discharged out of the machine via a straw chain (10) and a straw cutter (11) of a straw processing unit (9), and the threshed is separated into grains and fine dust by a rocking sorting unit (19). The grains are stored in a grain tank (17) via a fryer (18), and fine dust is discharged to the outside via 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 mowing portion (8) is raised at the rear end of the lower frame (30) formed in a substantially rectangular frame shape, and is a vertical drive portion, that is, a left and right vertical frame. The drive shaft cases (31L) and (31R) are erected at an angle from the front to the rear and low to form a mowing portion 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 support rod (33) behind the weeding body (34), between the upper end of the raising part support 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), and the cutting grain introduction path (3) is set.
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 (62L) bent in a substantially L-shape is provided between the left-side rotating body support rod (62L) and the left-side rotating body 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 constructed 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 in a stepped manner 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.

Referring to FIG. 5, a description will be given, with reference to FIG. 5, of a combiner rotating device which can maintain a good front view without increasing the distance between the driver's seat and the harvester in the combine having the above-described configuration. . FIG. 5 is a diagram illustrating a link mechanism of the rotating device of the mowing unit. The reaping unit (8) is provided with a reaping unit frame (3).
It is rotated around a pivot (A) via a hydraulic mowing elevating cylinder (21) pivotally attached to 2). One end of the hydraulic cylinder (90) is connected to the pivot (A). Concatenated,
The other end of the cylinder (90) is raised and connected to a horizontal drive unit (91). The hydraulic cylinder (90) is provided with a raising portion (3) when the hydraulic reaping elevating cylinder (21) is raised.
9) The upper surface of the driver's seat (13) does not approach the driver's seat (13).
An elevation position sensor (93) for detecting the angle between the mowing frame (32) and the raising part (39), which should keep the distance between the raising part (39) and the raising part (39) constant, is provided.

The left and right drive shaft cases (31) are provided 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 cutting drive shaft (92) is applied to the cutting blade device (40).
It has a link mechanism that informs the user. 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).

The elevating position sensor (93) detects the relative position height between the mowing elevating frame (32) and the hydraulic cylinder (90). In this embodiment, FIGS.
As shown in the figure, the sensing pivot arm (94) of the pivot potentiometer type elevation position sensor (93) fixed to the bearing bracket (90a) of the hydraulic cylinder (90).
Are fixed to the outer surface of the rotation fulcrum shaft (96).
5), so that the rotation angle of the cutting frame (32) and, consequently, the vertical position of the cutting unit with respect to the traveling machine body can be detected.

In the rotating device of the mowing section having such a configuration, the mowing section frame (32) and the hydraulic cylinder (90) are rotated as the mowing section (8) rotates about the pivot (A). ), The drive shaft case (31) having one end of the hydraulic cylinder (90) as a common pivot point in the cutting state and the raising portion (3).
9), the form of the link mechanism formed by the above is collapsed. In order to correct the deformation of this form, the extendable drive shaft case (31) is extended by spline fitting.

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 secured. ,
Although the operator has a sufficient field of view in front, it is necessary to arbitrarily change the distance between the driver's seat (13) and the raising portion (39) depending on working conditions. That is, in order to raise the weeds at the time of traveling on a steep hill or crossing a ridge, and to secure the climbing angle, the interval between the driver's seat (13) and the raising part (39) needs to be narrower than a set value. ) Is detected by the elevation position sensor (93), the expansion and contraction operation of the hydraulic cylinder (90) is started at the set angle, and the raising section (3) is started.
9) can be raised above the standard set height to satisfy the operator's work conditions. In such a state, the angle of inclination between the cutting frame (32) and the raising portion (39), that is, the raising angle α, and the normally set angle,
That is, the mowing frame (32) and the raising portion (3) for which the distance between the driver's seat (13) and the raising portion (39) should be kept constant.
9) has a relationship α> θ.

In addition, during the laying operation, the reaping unit (8) operates at a lower position than in a normal operation state. Therefore, the angle of the reaping unit (8) is detected by the elevation position sensor (93), and the set angle is set. In this case, the operation of extending and retracting the hydraulic cylinder (90) is started, and the length of the vertical drive case (31) is shortened, so that the posture of the mowing part (8) required for the laying down work can be maintained. In such a state, the narrow angle between the driver's seat (13) and the raising portion (39), that is, the raising angle β and the standard narrow angle θ have a relationship of θ <β.

According to the rotating device of the mowing unit having the above-described structure, the connecting portion of the hydraulic cylinder is raised to the rotating fulcrum and set to the horizontal drive unit, so that the mounting operation can be easily performed, and the lifting cylinder can be easily moved. By interlocking the hydraulic cylinder and the hydraulic cylinder, the movement of the vertical drive unit can be freely set, and the distance between the raise unit and the driver's seat can be arbitrarily changed. Also, even when the cutting height is changed, the raising angle is kept constant within a predetermined angle range, the transport angle does not change from the weeding body to the cutting blade, and the distance between the driver's seat and the raising part is constant. , And can be set so that the raising angle does not change. Further, since the set angle of the elevation position sensor provided on the hydraulic cylinder can be arbitrarily set according to the model of the combine or the working conditions, it is possible to keep the distance between the driver's seat and the reaping section safe and sufficiently secure the operator's forward visibility. it can. Note that the above link mechanism is simplified to explain in principle, and is not limited to a three-row cutting combine.

[0021]

As described above, according to the first aspect of the present invention, there is provided a harvester in a combine according to the present invention. And the other end of the hydraulic cylinder is connected to the vertical drive by extending and retracting the other end of the hydraulic cylinder, thereby facilitating the mounting operation, maintaining the balance of the entire link mechanism of the mowing unit, and improving the working efficiency. can get. According to the second aspect of the present invention, the position of the hydraulic cylinder is detected by the elevation position sensor provided on the hydraulic cylinder, and the position of the hydraulic cylinder is linked with the elevation cylinder at a predetermined value or more. Can be set freely, and the distance between the driver's seat and the raising part can be changed arbitrarily. Further, the angle of elevation is kept constant by the setting angle of the elevation position sensor, and the distance between the driver's seat and the elevating part can be changed arbitrarily according to the running state or working conditions, so that the operator has sufficient front visibility. Can be.

[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.

FIG. 6 is a side view showing a mounting position of the position sensor.

FIG. 7 is a plan view showing a mounting position of a position sensor.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Combine 2 Traveling crawler 3 Track frame 8 Cutting part 12 Operating part 18 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 Raising part 40 Cutting blade device 60L Lower left transfer device 60R Lower right transfer device 67 Pipe frame 73 Raising belt pulley 77 Ear tine 80 Star wheel 90 Hydraulic cylinder 91 Raising horizontal drive unit 92 Cutting drive shaft 93 Elevating position sensor 94 Sensing and rotating arm 95 Sensor shaft 96 Rotating fulcrum shaft

 ──────────────────────────────────────────────────続 き Continued on the front page F term (reference) 2B076 AA03 BA06 CA04 CA13 CC02 EC23 2B081 AA01 BB03 BB05 BB11 BB17 BB18 CC60 EG25 2B382 GA03 GA09 GC03 GC04 GC15 GD02 HB02 HF02 HF22 LA06 LB02 LC04

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 transporting devices for transporting the harvested grain culm to the threshing unit side, a hydraulic cylinder is connected to the reaping unit rotation fulcrum and the raising horizontal drive unit of the grain culm raising device. And a retractable vertical drive unit is connected to the horizontal drive unit. 2. The rotating device according to claim 1, wherein the hydraulic cylinder is provided with an elevating position sensor.