JPH0630636A - Grass-dividing part of reaper harvester - Google Patents

Abstract

PURPOSE:To suppress the winding of a plant on a rotary grass-dividing member in a reaper harvester by providing a freely drivable rod-shaped rotary grass- dividing member having a circumferential face having gyration radius differing by the circumferential direction as a grass-dividing means attached to a reaping part to separate the reaped culm from the culm of the unreaped side and placing the rotary grass-dividing member in a state inclined forward. CONSTITUTION:The driving apparatuses 15-19 of a rotary grass-dividing member 13 are formed in such a manner as to reciprocatively rotate the grass-dividing member in an angle range within one rotation.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a weeding section equipped with a harvesting machine such as a combine harvester or a binder, and more specifically, to a portion arranged to separate a harvested culm from an uncut side culm. The present invention relates to a weeding part of a reaping harvester in which a rod-shaped rotating swarding body having a peripheral surface with a radius of gyration different depending on the circumferential direction is provided so as to be freely rotatable and tilted backward.

[0002]

2. Description of the Related Art Conventionally, as a rotary type weeding means, as shown in, for example, Japanese Unexamined Patent Publication (Kokai) No. 3-65117, there has been known one used in a strawberries harvester. In this case, a drive device for the rotating grass is formed so that the rotating grass is continuously rotated in a constant direction at all times, and vibration is imparted to the rice culm due to the rotation of the peripheral surface having a different radius of rotation depending on the circumferential direction. It was designed to loosen the entanglement of the cultivars and to cultivate the culms by the scooping action of the rotating buds as the aircraft progresses.

[0003]

However, the following problems are expected to occur when the rotary type weeding means is used as a combine or a binder for harvesting rice. In other words, in the case of straw grass, the stem culm is relatively hard and difficult to wrap around, so there is no support even if it is continuously rotated in a certain direction, but when harvesting flexible rice that has fallen, it is always continuous in a certain direction. It is easy for culms and weeds to wind around the rotating rotating subdivided body, which causes a decrease in the weeding function due to plant winding, and it takes time and effort to remove the wrapped plants, and the aspects of maintenance and management of the rotating subdivided body are There was room for improvement. An object of the present invention is to make it possible to effectively suppress plant wrapping around a rotating plant body.

[0004]

A feature of the present invention is that the cutting surface is arranged in the cutting section to separate the cut culms and the uncut side culms, and a peripheral surface having a different rotation radius in the circumferential direction is used. In a reaping and harvesting machine in which the rod-shaped rotating grass body that is provided is freely drivable and is tilted backward, the drive device for the rotating grass body is formed so that the rotating grass body can reciprocally rotate within an angle range of one rotation or less. There is something I did.

[0005]

In other words, according to the cross-sectional shape of the peripheral surface whose radius of gyration differs depending on the circumferential direction, the reciprocating rotation of the rotating grass body causes the rotation of the peripheral surface to impart sufficient vibration to disentangle the culms. By setting the angle range appropriately, while maintaining a good weeding function by the rotating grass body, reciprocating rotation of the rotating grass body within an angle range within one rotation effectively causes plant wrapping around the rotating grass body. It can be suppressed, and it is possible to sufficiently prevent the decline in the function of the grass and the work interruption due to the winding of plants.

[0006]

As a result, it has become possible to provide a weeding part of a cutting and harvesting machine which is much more excellent in the weeding function and maintenance of the rotating weeding body.

[0007]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS As shown in FIG. 1, a mowing section 2 is provided at a front portion of a traveling vehicle body equipped with a crawler type traveling device 1 so that it can be lifted and lowered by swinging around a support shaft 4 by a hydraulic cylinder 3 for mowing. The section 2 is provided with a planted grain culm raising device 5, a cutting blade 6, and a conveying device 8 that sends the cut grain culm to the threshing device 7, and supplies the grain culm from the cutting unit 2 to the threshing device 7 while conveying it backward. The feed chain 9 is provided, and the bagging hopper 11 that collects the first grain (grain) that has been threshed and sorted by the threshing device 7 is provided with the threshing device 7.
The boarding operation unit 12 is arranged in front of the hopper 11 to form a self-removing combine. Mowing part 2
A rod-shaped rotating sward body 13 for separating the cut grain culm and the uncut side grain culm is located in front of the planted grain culm raising device 5,
In addition, it is provided so that it can be driven and rotated freely in a rearward tilting posture, and a fixed weeding tool 14 is provided in front of the lower end of the rotating grass body 13 to loosen the entanglement of the grain culms by imparting vibration accompanying the rotation of the rotating grass body 13 to advance the machine body. By the scooping action of the rotating swarding body 13 associated with the above, the culm is caused to be weeded.

As shown in FIGS. 2 and 3, a cylindrical peripheral surface 13a, such as an elliptical shape or an oval shape, having different radii of rotation depending on the circumferential direction, and a tapered conical portion 13b connected to the lower part of the peripheral surface 13a. A small diameter disc 16 is formed on the drive side rotary shaft 15 which is formed in the rotary grass body 13 and is continuously rotated in a constant direction in the transmission portion from the planted grain culm raising device 5 to the rotary grass body 13.
Attach the arm 18 to the upper support shaft 17 of the rotary grass 13
Is attached, the small-diameter disk 16 and the arm 18 are linked by a link 19, and the distance between the rotation center of the drive-side rotation shaft 15 and the first fulcrum 19a of the link 19 is made small and the rotation center of the upper support shaft 17 is linked. The distance from the second fulcrum 19b of 19 is increased, and with the continuous rotation of the drive-side rotary shaft 15 in a certain direction, the upper support shaft 17, that is, the rotary grass body 13 has an angle range of 90 degrees or more and within one rotation. It is configured to reciprocate on its own axis, and the rotation of the peripheral surface 13a having different rotation radii depending on the circumferential direction can impart sufficient vibration to loosen the entanglement in the grain culm, while effectively wrapping the plant around the rotating grass body 13. It can be suppressed to.

[Another embodiment] The peripheral surface 13a of the rotating grass 13
Any shape may be used as long as the radius of gyration differs depending on the circumferential direction, and the cross-sectional shape can be appropriately selected such as triangular or square. The drive means for reciprocally rotating the rotary grass body 13 within an angle range of less than one rotation can be appropriately selected from known power conversion mechanisms, and these means are collectively referred to as drive devices 15 to 19. Further, the angle range may be appropriately set according to the cross-sectional shape of the rotating grass body 13 and the like. Rotating subdivision 13
It is also possible to form a small hole that blows out air on the peripheral surface to reduce the contact resistance with the grain culm. INDUSTRIAL APPLICABILITY The present invention can be applied to various types of combine harvesters and other harvesting machines, and the specific objects of harvesting and harvesting machines can be appropriately selected.

It should be noted that although reference numerals are given in the claims for convenience of comparison with the drawings, the present invention is not limited to the structures of the accompanying drawings by the entry.

[Brief description of drawings]

1] Overall side view of combine

[Fig. 2] Side view of the rotating subdivision partially cut away

FIG. 3 is a view taken along the line AA of FIG.

[Explanation of symbols]

 2 Mowing part 13 Rotating grass body 13a Peripheral surface 15-19 Drive device

Claims (1)

[Claims] 1. A rod-shaped rotation having a peripheral surface (13a) having different radii of rotation depending on the circumferential direction, as a weeding means arranged in the reaping section (2) for separating the cut culm and the uncut side culm. In a reaping harvester in which a grass body (13) is provided so as to be driveable and tilted backward, a drive device (15 to 19) for the rotary grass body (13) is set within an angle range of one rotation. (13) A weeding part of a harvester, which is formed so as to reciprocally rotate.