JPH0630635A - Grass-dividing part of reaper harvester - Google Patents

Abstract

PURPOSE:To provide a reaper harvester provided with a rod-shaped rotary grass-dividing member having circumferential surface having a radius of gyration differing by the circumferential direction as a grass-dividing means placed at the reaping part in a state inclined forward and freely drivable to be rotated on its own axis, to perform the optimum grass-dividing work by the rotary grass-dividing member corresponding to the entangled state of the culms and to surely realize the division of grass without causing the pulling and tearing of culm and falling of grains. CONSTITUTION:A rotary grass-dividing member 13 is divided in the circumferential direction to form a plurality of grass-dividing sections 13a, 13b. The grass- dividing sections 13a, 13b are connected with each other at the lower supporting part 16 in a state freely tiltable in the direction to enable the approach and separation of the sections. The distance between the top ends of the grass- dividing sections 13a, 13b can be varied by a gyration radius adjusting means X.

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 No. 3-195414, there is known one used in a strawberries harvester. In this case, the rod-shaped rotating grass body is used in which the radius of rotation of the outer peripheral surface acting as a weeding function is set to be substantially constant over the entire length, and the rotation radius of the outer peripheral surface varies depending on the circumferential direction. Vibration was applied to loosen the entanglement of the planted turfgrass, and the turfgrass was weeded by the scooping action of the rotating buds as the aircraft progressed.

[0003]

When the weeding means having the above-mentioned configuration is applied to a reaper harvesting machine for harvesting grain culms such as rice barley,
If the difference between the maximum radius of gyration and the minimum radius of gyration is set to a relatively small value, it will not be possible to sufficiently loosen the entanglement of the grain culm due to insufficient vibration imparted to the grain culm, and pulling out of the grain culm due to scooping and If the difference between the maximum radius of gyration and the minimum radius of gyration of the rotating grass is set to a relatively large value, on the other hand, tearing and shredding tend to occur. It is likely to occur, and there was room for improvement in terms of improving the weeding function. An object of the present invention is to make it possible to exert an appropriate weeding action corresponding to the entangled state of the grain culm by the rotating mess, and to reliably realize good weeding without pulling out of the grain culm or tearing and shedding. There is a point in doing so.

[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 that has a rod-shaped rotating sward body that can be rotated about its own axis and is tilted rearward, a rotating succulent body is formed by a plurality of sward body divisions divided in the circumferential direction, This is to provide a radius-of-rotation adjusting means for swingably mounting the lower end side supporting portions in directions toward and away from each other and changing and setting the distance between the upper end sides of the divided grass body parts.

[0005]

In other words, the plurality of divided grass bodies are oscillated around the lower end side, and the rotation radius adjusting means can change and set the distance between the upper end sides of the divided grass body portions. The difference between the maximum turning radius and the minimum turning radius in the same phase can be set to an appropriate value corresponding to the entangled state of the culm, and the difference can be small on the lower end side and larger on the upper end side. Regardless of the state of entanglement, it is possible to give a proper amount of vibration to the grain culm without excess or deficiency, and gradually increase the intensity of vibration with scooping, pulling out the grain culms, tearing, and shedding. It is possible to surely realize a good sward that sufficiently suppresses

[0006]

As a result, it has become possible to provide a weeding part of a cutting and harvesting machine which is further excellent in the weeding function 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,
Further, it is provided so as to be driven and rotated freely in a rearwardly inclined posture, a fixed weeding tool 14 is provided in front of a lower end portion of the rotary weeding body 13, and a pair of left and right guide rods 15 extending rearwardly from the fixed weeding tool 14 are rearwardly raised. It is arranged in the left and right vicinity of the rotating grass body 13 in an inclined posture, and the vibration of the rotating grass body 13 is applied to loosen the entanglement of the culm, and the guide rods 15 and the rotating grass body 13 scooping up the grains as the machine progresses. It is designed to cause culms and weeds.

As shown in FIGS. 2 and 3, the rotating subdivided body 1
3 divided into three parts in the circumferential direction
a, 13b, for example, a substantially cylindrical peripheral surface 13 having a different radius of gyration, such as an ellipse or an oval, depending on the circumferential direction.
c, and a downwardly conical portion 13d connected to the lower part thereof
Is formed on the rotating subdivision body 13 and divided into subdivision bodies 13a, 1
3b is attached to the lower end side support shaft 16 so as to be capable of swinging toward and away from each other, and in order to change and set the distance between the upper end sides of the grass body divided portions 13a, 13b, the grass body divided portions 13a, 13b are respectively attached. Screw 17 attached only for rotation
Is screwed onto the female screw portion 19 attached to the drive shaft 18, and the difference between the maximum turning radius and the minimum turning radius in the same phase of the rotating grass body 13 is set to an appropriate value corresponding to the entangled state of the grain culms, Moreover, the difference is small on the lower end side and is increased on the upper end side to give vibrations of appropriate strength to the grain culm regardless of the state of entanglement of the grain culm,
The intensity of vibration gradually increases with scooping, and it is possible to surely weed in a good state in which pulling out, tearing and shedding of grain culms are sufficiently suppressed.

[Other Embodiments] The rotating subdivision 13 may be formed of three or more subdivisions 13a and 13b, or
The specific structure for swingably attaching the plurality of divided grass body portions 13a and 13b on the lower end side can be appropriately changed, and these attachment configurations are collectively referred to as a support portion 16. Divided body division part 1
The specific configuration for changing and setting the distance between the upper ends of 3a and 13b can be appropriately changed. For example, as shown in FIG. 4, it can be slidably attached to the drive shaft 18 by spline fitting or key fitting. The boss 20 and the divided body 13a,
13b are linked together by a link 21, and the position of the boss 20 is set by a pin 23 that can be selectively attached to a plurality of holes 22 of the drive shaft 18, and the distance between the upper ends of the divided grass bodies 13a and 13b is changed and set. However, these means are collectively referred to as a turning radius adjusting means X. The shape of the peripheral surface 13c of the rotating grass body 13 may be any shape as long as the radius of rotation is different depending on the circumferential direction, and the cross-sectional shape can be appropriately selected such as triangular or square. It is also possible to form a small hole that blows out air on the peripheral surface 13c of the rotating grass 30 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 grass

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

FIG. 4 is a vertical sectional side view of a main part of another embodiment.

[Explanation of symbols]

 2 Mowing part 13 Rotating grass body 13a Dividing body part 13b Dividing body part 13c Circumferential surface 16 Supporting part X Turning radius adjusting means

Claims (1)

[Claims] 1. A rod-shaped rotation having a peripheral surface (13c) having a different radius of gyration as a weeding means arranged in the reaping section (2) for separating the cut culm and the uncut side culm. In the reaping harvester provided with the grass bodies (13) so as to be rotatable and tilted backward, the rotating grass bodies (13)
A plurality of divided grass bodies in the circumferential direction (13
a) and (13b), and the vegetation body divided portions (13a) and (13b) are attached to the lower end side support portion (16) so as to be swingable in a direction toward and away from each other. 13a), (13b) the weeding section of the harvesting machine provided with the turning radius adjusting means (X) for changing and setting the distance between the upper end sides.