JP2760685B2 - Combine - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a reaping device for reaping a stalk, a stalk transporting device for transporting the stalks rearward, and a reaping pretreatment device comprising a reaping portion support for supporting the stalk. Is disposed at a position on the front side of a fuselage equipped with a threshing device, and this cutting pretreatment device is configured to be able to vertically move and swing around a horizontal axis on the fuselage side, and is slid laterally with respect to the fuselage. The present invention relates to a combine configured to be movable.

[0002]

2. Description of the Related Art As the above-mentioned combine, those described in the following [1] and [2] are conventionally known. [1] The slide support formed at the tip of the reaper support
A mowing frame that supports the raising device and the mowing device is slidably engaged in the lateral direction, and a lateral feed screw mechanism is interposed between the mowing frames and the mowing portion is configured to slide the mowing portion laterally (for example, See Japanese Utility Model Application Laid-Open No. 2-55529). [2] A support frame having a pair of upper and lower slide bars is provided between a pair of right and left columns, and a slide bracket slidably supported on the slide bar is provided on the support frame. Attach a swing fulcrum of the mowing unit support and a hydraulic cylinder as a drive device for driving the mowing unit support up and down on the slide bracket. One that is configured to be movable (for example, see Japanese Utility Model Laid-Open No. 2-105318).

[0003]

In such a conventional structure, in the so-called round-cutting operation, the grain stalk raising device and the cutting device are moved as close as possible to the uncut area with respect to the machine body.
In order to reduce the mud pushing by the crawler traveling device against the uncut grain culm, and in the middle split work mode, the grain culm raising device and the mowing device are located at the lateral center of the body, and the crawlers on both the left and right sides The purpose of the present invention is to reduce adverse effects such as pushing down uncut culms by the traveling device.
However, in the conventional structure described in the above [1], since the horizontal slide mechanism of the mowing part is arranged at a low position below the conveying path of the mowing grain culm, the straw generated by the mowing operation is provided. There is a possibility that debris, weeds, and the like may be entangled in the slide mechanism or mud may enter the slide sliding portion, thereby hindering smooth operation, and there is room for improvement.
Further, in the conventional structure described in the above [2], the swinging fulcrum of the pre-cutting device is located at a higher position with respect to the ground, so that the above-mentioned problem is easily avoided. There is a high possibility that the cost will increase due to processing, and it is difficult to handle in a work environment with many contaminants. That is,
In order to allow the slide bracket moving on the pair of upper and lower slide bars to move left and right without twisting, the parallelism of the pair of upper and lower slide bars should be set extremely strictly, and Therefore, the slide bracket supported by the slide bar needs to be laterally moved while accurately maintaining the parallel posture with respect to the slide bar. However, in order to process and assemble the cutting pre-processing device, which is relatively heavy and is subject to vibrations caused by the running of the machine, in a strictly accurate and parallel manner, the high precision manufacturing technology and its high precision This requires high strength to maintain the state for a long period of time, and this has led to an increase in overall cost.
Moreover, since this combine is used in a work environment where a large amount of dust is generated, such as cutting, transporting, and threshing, the parallelism can be easily adjusted even if the dust adheres and accumulates on the slide bar. There is a risk of collapse, which may lead to kinks,
Practically difficult to handle. The present invention solves the above-mentioned disadvantages and reduces the cost of a combine that can prevent the hindrance due to the intrusion of an external object while maintaining the smooth lateral movement function of the harvesting pretreatment device, with a simple structure. It is intended to be.

[0004]

SUMMARY OF THE INVENTION In order to achieve the above object, a feature of the present invention is that a pre-cutting device comprising a cutting device for cutting a grain stalk and a cutting portion support for supporting the cutting device. Is disposed at the front side position of the fuselage equipped with the threshing device, and is configured to be able to drive up and down around the horizontal axis of the fuselage side, wherein the cutting pretreatment device, the rear end side of the cutting unit support In addition, a receiving portion that is vertically oscillatably connected around the horizontal axis center of the machine body side and that is displaced up and down by a mowing elevating drive mechanism is provided at a position away from the horizontal axis center, and the receiving portion is provided with the reaper. While connected to the machine body side via an elevating drive mechanism, the reaping portion support is configured to be movable in the lateral direction with respect to the machine body at a connecting portion with respect to the horizontal axis center, and is horizontally moved with respect to the receiving portion. Is located so that it can be moved. As set forth in claim 2, the horizontal axis is constituted by the axis of a horizontal transmission shaft for input to the pre-cutting device, and a boss portion externally fitted to the horizontal transmission shaft is formed by the reaping portion support and the boss portion. It is preferable to be configured so as to be able to move laterally integrally. As described in claim 3, the reaping portion support,
It is preferable to use a screw shaft whose axis is set in a direction along the horizontal axis so as to be able to move laterally.

[0005]

The swinging pivot of the mowing portion support is generally provided at a high position because it is necessary to adjust the height of the mowing portion at the mowing portion and to raise the mowing portion greatly when traveling on the road. Also, the degree of scattering of dust such as weeds and mud is considerably smaller than that of a lower part such as a cutting position. Therefore, it is easy to prevent foreign substances such as straw chips and weeds from being entangled with the laterally moving portion provided on the swing pivot portion, and to prevent muddy soil from adhering. The mowing pre-processing device is composed of a connecting structure capable of ascending and descending and swinging around a horizontal axis on the machine side at the rear end side of the mowing portion support, and a receiving structure at a position away from the horizontal axis. Because it is supported by point support, it is only for a single horizontal axis of the reaper support, compared to two-point support in a structure that translates using a pair of upper and lower slide bars as in the prior art. The translation may be performed, and the required precision in the manufacturing process is much easier than in the case where the parallelism with respect to the two axes is required. Therefore, the structure with the required lateral movement function with relatively simple manufacturing and assembling processing, the structure is simple,
And it is easy to configure at low cost. Also, while the mowing portion support is moved laterally, the catching portion for the mowing portion support is fixed in the lateral direction and provided on the machine body side, so that the mowing lifting drive mechanism for driving and displacing the catching portion is also located in the lateral direction. It may be fixed and attached to the fuselage.

[0006]

Thus, according to the present invention, the lateral movement of the pre-cutting unit is less likely to be hindered by foreign matter, and the lateral movement function of the pre-cutting device can be maintained smoothly for a long period of time. Is now available. The support structure for two-point support of the reaping unit support, which is raised and lowered and oscillated by the mowing pre-processing device, is not constituted only by a pivot structure in which the relative position between the support points is completely defined. The cutting pre-processing device which can be raised and lowered and oscillated by adopting a structure in which one side has a degree of freedom in a relative position between the support points as a receiving structure which can be changed in position around the pivot axis of the mowing portion support. Is made possible in the receiving state, so that the structure is simple and the cost is reduced. Also, since the mowing elevating drive mechanism for driving the mowing unit support that is moved laterally up and down is provided in a laterally fixed state similarly to the conventional configuration without the lateral moving structure,
For example, the power transmission system for the mowing elevating drive mechanism is made simpler and more durable as compared with the case where the mowing elevating drive mechanism is configured to move laterally together with the mowing portion support to perform the same function. be able to. As set forth in claim 2, the horizontal axis is constituted by the axis of a horizontal transmission shaft for input to the pre-cutting device, and a boss portion externally fitted to the horizontal transmission shaft is defined as the reaping portion support. If it is configured to be able to move laterally as a unit, the connecting structure of the reaping part support can be configured by effectively using the lateral transmission shaft for power transmission and its pivotal structure, which is more structural than when a separate connecting structure is provided. Can be simplified. As described in claim 3, when the reaping portion support is configured to be laterally movable by using a screw shaft whose axial direction is set in a direction along the horizontal axis, a structurally simple and small screw is provided. Using the shaft, the lateral movement structure of the mowing portion support can be easily formed in a simple and compact structure.

[0007]

Embodiments will be described below with reference to the drawings. FIG.
Shows the front of the two-row mowing combine. This combine is located at the front of the fuselage equipped with
The cutting pre-processing device 2 is connected so as to be able to move up and down and swingably around a horizontal axis X, and the body is equipped with a machine frame 11 and a threshing device 3 on a traveling device 1. The boarding operation unit 4 located on the side is disposed and configured.

The pre-cutting device 2 includes a pair of right and left raising devices 5 for raising the planted grain culm in a standing position, a clipper-type cutting device 6 for cutting the root of the raised grain culm,
A pair of left and right raking packers 7 for raking and transporting the reaping cereal toward the center in the width direction of the reaping, and the reaping culm in the upright position, while holding the stock side and locking the tip side, gradually. It is provided with a grain culm conveying device 9 and the like which is conveyed rearward while changing the posture to the side-down posture and transferred to the threshing feed chain 8 and the like, and is swung around the horizontal axis X by a hydraulic cylinder 10 as a mowing lifting drive mechanism. It is configured to be supported by a reaping portion support 12 that is movably driven by a body frame 11.

As shown in FIGS. 3 and 4, a transverse transmission shaft 13 having the same axis as the horizontal axis X and having a hexagonal cross section is used.
And the lateral transmission shaft 13 is attached to the left and right brackets 14.
And is rotatably supported by the body frame 11. Then, the reaper supporting member 12 is
The lifting and lowering boss 12a is externally fitted via a bush 15 so as to be relatively rotatable and relatively slidable along the axial direction of the lateral transmission shaft 13 to constitute a slide support mechanism A. Power is transmitted from the prime mover via an input pulley 16 attached to one shaft end of the lateral transmission shaft 13 so that torque can be transmitted to the transmission shaft 13 and slide integrally with the vertically oscillating boss 12a. The power is transmitted from a bevel gear 17 externally fitted to the pulling device 5, the reaping device 6, and the scraping packer 7 through a front-rearward transmission shaft 18, respectively. Bevel gear mechanism 20 in fitted bevel gear case 19
A power transmission system is configured to transmit power to the grain culm conveying device 9 via the.

The transmission is transmitted from the front-rear transmission shaft 18 to a vertical transmission shaft 22 via a bevel gear mechanism 21 and is transmitted from the upper portion of the vertical transmission shaft 22 to the respective raising devices 5. One of the squeezing packers 7 is rotatably driven at a lower halfway portion of the shaft 22 by frictional interlocking via a disc spring 23.
And the other scraper packer 7 are engaged with each other so as to be rotatable integrally. As shown in FIGS. 8 and 9, a crank arm 26 is driven via a gear type speed increasing mechanism 25 provided inside a case 24 at the lower end of the vertical transmission shaft 22,
The reaping device 6 is driven by a reciprocating swing drive of a balance arm 27 that is freely rotatable about the longitudinal transmission shaft 22 by a crank arm 26 at a predetermined angle.

The raising device 5 and the mowing device 6 are configured to be slidable relative to each other in the lateral direction with respect to the machine body, and the grain culm conveying device 9 is moved around the longitudinal axis Y at the conveying end side. It is configured to be swingable. The reaper support 12 is positioned near the lateral transmission shaft 13 with the body frame 11.
Is provided with a lateral feed mechanism 28 which is driven to move laterally.
That is, the bevel gear case 19 and the lateral transmission shaft 13
The swinging member 30 is moved from the horizontal axis X to the cylindrical member 29 interposed in a relatively rotatable manner and in a position fixed in the axis direction.
The swing member 30 is extended around the shaft 3 so as to be swingable.
And a screw shaft 31 attached to an electric motor 32 with a speed reduction mechanism, which is mounted on the outer portion of the swinging member 30 and fixed.
Are connected. Then, the top member 33 that is engaged with the screw shaft 31 from both upper and lower sides in a sandwiched state is fixed to the reaping portion support body 12, and the screw shaft 31 is rotated by the electric motor 32, so that the top member 33 is interposed. Reaper support 1
2 is configured to slide horizontally.

As shown in FIGS. 5 and 6, the hydraulic cylinder 10 for driving up and down is connected to the body frame 11 by a base end thereof.
Along the pivot axis around the axis of the horizontal axis, as well as pivotally connected in a fixed position in the horizontal direction, a laterally long receiving portion 34 is attached to the distal end of the piston rod that protrudes and retracts at the other end side, An elongate mounting support member 35 is mounted laterally at the location where the mower support 12 is pressed by the cylinder, so that the receiving portion 34 and the mounting support member 35 are slidable relative to each other in the horizontal direction and load receiving is performed. It is engaged as much as possible.

One end of the receiving portion 34 is connected to the supporting member 30 to prevent the hydraulic cylinder 10 from dropping downward. The lower portion of the mounting / supporting member 35 is bent to form a receiving portion. By engaging, the cutting pretreatment device 2 is prevented from rising upward due to contact with the field scene. As shown in FIG. 2, the grain stalk conveying device 9 is configured to swing around the axis of the output shaft 37 of the bevel gear mechanism 20 by the guide rod 36 with the lateral sliding of the cutting unit as described above. As shown in FIG. 7, the bevel gear case 1 is moved by an electric motor type working depth adjusting mechanism 39 attached to the case 38 of the front-rear transmission shaft 18.
9 is configured to relatively rotate and swing up and down around the axis of the lateral transmission shaft 13. With the above configuration, the raising device 5 and the mowing device 6 are driven by the electric motor 32.
Can be moved laterally together with the mowing portion support 12, and can be driven up and down by the hydraulic cylinder 10 regardless of the lateral movement.

In the claims, the reference numerals are used to facilitate comparison with the drawings, but the present invention is not limited to the configuration shown in the attached drawings.

[Brief description of the drawings]

FIG. 1 is a side view of the front part of the combine.

FIG. 2 is a plan view showing a lateral movement state of the pre-cutting device.

FIG. 3 is a plan view showing a transmission system.

FIG. 4 is a cutaway plan view of a support structure portion for the body of the cutting pretreatment device.

FIG. 5 is a cutaway side view of a support structure portion of the pre-cutting device with respect to the machine body.

FIG. 6 is a cutaway plan view showing a receiving state at a receiving portion.

FIG. 7 is a side view of a handling depth adjusting mechanism.

FIG. 8 is a cutaway side view of the reaper unit.

FIG. 9 is a plan view of a mowing device part.

[Explanation of symbols]

 Reference Signs List 2 Pre-cutting device 3 Threshing device 6 Cutting device 9 Grain culm conveying device 10 Cutting raising / lowering drive mechanism 12 Cutting portion support 12a Vertical oscillating boss portion 34 Receiving portion 31 Screw axis X horizontal axis core

Claims (3)

(57) [Claims] 1. A reaping device (6) for reaping cereal stems, and
And a mowing portion support (12) for supporting the
A machine equipped with a pre-cutting device (2) and a threshing device (3)
It is located at the front side of the body, around the horizontal axis (X) on the fuselage side.
In the apparatus configured to be able to be driven up and down freely, the cutting pre-processing device (2) is connected to the cutting unit support (1).
2) At the rear end side, move up and down around the horizontal axis (X) on the aircraft side
It is swingably connected and vertically displaced by the mowing lifting drive mechanism (10).
Position where the receiving portion (34) is away from the horizontal axis (X)
And the receiving portion (34) is connected to the mowing lift drive mechanism (1).
0), and the reaping portion support (12) is connected to the horizontal axis (X).
With a connecting part that can be moved laterally with respect to the aircraft,
And provided so as to be laterally movable with respect to the receiving portion (34).
Combine combine. 2. The horizontal axis (X) is constituted by the axis of a horizontal transmission shaft (13) for input to the pre-cutting device (2), and a boss fitted on the horizontal transmission shaft (13). 2. A combine as claimed in claim 1, wherein the section is adapted to be laterally movable integrally with the mowing section support. 3. The reaping portion support (12) is provided with a screw shaft (3) whose axis is set in a direction along the horizontal axis (X).
The combine according to claim 1 or 2, wherein the combine is configured to be able to move laterally using (1).