JPH04228010A - Grass splitting device in strawberry harvester - Google Patents

Abstract

PURPOSE:To enable distributing and grass dividing in a state of reduced occurrence of twining or breaking, prevent waste rushes or weeds, etc., from being caught, and smoothly and sufficiently carry out grass dividing action. CONSTITUTION:A grass dividing unit of a rush harvester is equipped with a stem and culm raising up device 4 having raising up lugs for engaging with stems and culms of rushes, and raising up the stems and culms while transferring the stems and culms to the back upper part in the front of a reaper 3 installed in a front lower position of a mobile device 1, and a rotating grass dividing unit 5 rotating about the oblique shaft center directing from the back of a fixed grass diving unit (12a), fixed and arranged under the front end of a machine body in the front position of the above-mentioned stem and culm raising device 4 toward the upper part of the aforementioned stem and culm raising up device 4, and characterized as follows. The above-mentioned rotating grass dividing unit 5 is formed into a cross-sectional shape having respective different widths in the perpendicularly intersecting directions and formed so that the outer peripheral part may be a smooth curved surface. The rotating grass diving unit 5 is constructed so as to be rotated and driven about the shaft center at the central position thereof. At least the front end side of the aforementioned rotating grass dividing unit 5 is simultaneously formed into a tapered shape.

Description

[Detailed description of the invention]

0001

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a weeding device for a rice straw harvester.

0002

[Prior Art] Conventional weeding devices include, for example, Japanese Patent Laid-Open No. 61
As shown in Japanese Patent No. 21021, the rotary weeding body was constructed of a rod material formed into a curved shape, and both ends of the rotary weeding body were supported and driven to revolve at high speed.

0003

[Problems to be Solved by the Invention] However, in this conventional structure, since the curved rod is rotated as described above, the grass rush tends to get wrapped around the end of the rotating weeding body, which has a small orbital radius. , they had the disadvantage of tearing out the rush, causing damage, and hindering rotation. Moreover, since the structure is such that thin rods are swung around at high speed, there is a problem in that they collide with the straw grass with a strong force, causing many cracks and breaks, leading to a decline in quality.

[0004] Furthermore, the fixed weed cutting body is constructed to be tall enough to cover the front side of the lower part of the rotary weed cutting body in order to prevent debris such as grass and weeds from getting entangled with the rotational support portion on the front end side of the rotating weed cutting body. In addition, it is necessary to set the rising angle of inclination to the ground to be small in order to smoothly scoop up and divide the grass. Therefore, the fixed grass plant becomes large and tall and long from front to back, and there is a problem in that there is a high risk that waste grass, weeds, etc. will get caught and accumulate.

[0005] The present invention aims to solve these problems, and to achieve this purpose, the following technical measures have been taken.

[0006]

[Means for Solving the Problems] That is, the present invention engages the stem culms of rush grass in front of a reaping device 3 provided at a low front position of a vehicle chassis 2 having a traveling device 1 so as to move the stalks to the upper rear side. A stem culm pulling device 4 having a pulling lug that is pulled up while moving is provided, and the stem culm pulling device 4 is installed from the rear of a fixed branching body 12a fixedly disposed at the lower part of the front end of the body at a position in front of the stem culm pulling device 4. In the weeding device of a rice straw harvester, the weeding device is equipped with a rotary weed cutting body 5 that rotates around an oblique axis toward the top of the weed cutting machine 4. The rotary weeding body 5 is shaped so that its outer peripheral part has a smooth curved surface, and is configured to be rotated around an axis at the center thereof, and at least the front end side of the rotating weeding body 5 is tapered. It is characterized by being molded into.

[0007]

[Operation] While moving the vehicle platform 2 forward, the work of cutting and harvesting the straw stems and culms is started. Then, the straw grass planted in the field begins to be raked up and subjected to the weeding action with the tip of the rotating rotary weeding body 5 thrusting into it. In other words, the rotary weeding body 5 gradually distributes and divides the entangled grass grass upward from the root part while applying vibrations due to the difference in width in each orthogonal direction to the entangled standing grasses while rotating on its axis. . Moreover, since the vibration effect caused by the difference in width is carried out over the entire length, even if the grass tries to wrap around, the vibration can prevent it from wrapping around the entire length.

Furthermore, since the front end of the rotary grass divider has a tapered small diameter and is structured to rotate, the upper position of the front end is at a low position, and the fixed grass divider may be of a low profile.

[0009]

As described above, according to the present invention, compared to a method in which thin rods are distributed while colliding with rush grass at high speed, the distribution is performed with less occurrence of wrapping or breakage. Grass became possible. Furthermore, the tangles of the rushes in the front and back directions can be untangled, and the raising action by the pulling device that follows the weeding action can be performed smoothly without being hindered by the tangles of the front and back of the rushes.

[0010] In addition, since the fixed grass division body can be of short height, the rising slope relative to the grass can be made gentle without increasing the amount of forward protrusion, thereby minimizing the risk of getting caught by waste grass or weeds. I was able to reduce it.

[0011]

DESCRIPTION OF THE PREFERRED EMBODIMENTS On a vehicle chassis 2 having a traveling device 1, a scoring device 7, a binding device 8, and a mounting table 9 are provided. 3 is a reaping device, 10 is a stock transfer device, and 11 is an upper transfer device. The stem culm pulling device 4 has a pair of lifting lugs 6, which are provided in a sloping manner in front of the reaping device 3, with a starting end located at a lower position and a terminal end located at an upper position.

The rotating weed cutting body 5 has its starting end connected to the grass cutting support rod 12.
The weeding frame 15 is made of a rod-shaped body whose outer periphery is formed to have a smooth curved surface, and the end portion is supported on the rotary drive shaft 13 which is transmitted and rotated by the rotary shaft 14. It is configured to be held by a tool 17 and rotated around the shaft 13. Fixed branch 12
a is fixed to the tip of the grass cutting support rod 12 and is configured to cover the front side of the starting end of the rotating grass cutting body 5.

Further, the rotary weeding body 5 is formed to have a cross-sectional shape having different widths in the orthogonal directions, and is configured to be rotated around an axis 13 at the center thereof. In other words, the rotary weeding body 5 enters from the base of the grass root where the weeding frame 15 is intertwined, and gradually moves upward while applying vibration to the grass due to the dimensional difference between the large width L1 and the small width L2. The structure is such that the plants are divided and separated.

The front end of the rotary grass divider 5 is formed into a tapered shape with a smaller diameter toward the front end, and the fixed grass divider 12a covers the tapered end. Further, the rotary weeding body 5 configured as described above is disposed in front of the stem culm pulling device 4 at a relative position as shown in FIGS. It is configured to rotate in a direction moving away from the front with respect to the lifting path A formed by the device 4. That is, by setting the rotational direction of the rotary weed cutting body 5 as shown by the arrow in Fig. 2, the position of action on the standing grass moves upward as the machine moves during work, and eventually moves from the root side to the tip side. A separating force with a relatively large stroke is applied to the position extending over the area, and furthermore, due to the rotational direction of the rotating weed cutting body 5, this rotational force is applied to the straw stem culm K to be reaped, first by cutting the root side After acting to deflect the mowing side KC, a force to stretch the straw stem culm K upwards is exerted while acting to deflect the mowed side KC, thereby fulfilling the function of loosening the tangles. There is.

With the above structure, when the strawberry stem culm is transferred from the weeding action to the raising action, the stem culm at the tip is elongated by the weeding body 5 and is not damaged or broken.

[Brief explanation of the drawing]

FIG. 1 is a partially cutaway plan view of the main parts of a rice straw harvester.

FIG. 2 is a rear view showing the operating state.

FIG. 3 is a side view of the rice straw harvester.

[Explanation of symbols]

1 Traveling device 2 Chassis 3. Reaping device 4 Stem culm pulling device 5 Rotating plant 6 Lifting rug 7. Scouring device 8 Binding device 9 Mounting table 10 Stock transfer device 11 Upper conveyance device 12 Grass division support rod 12a Fixed branch 13 Rotation drive shaft (axis core) 14 Rotation axis 15 Grazing frame 16 Armrest 17 Bearing fitting i Lifting passage

Claims (1)

[Claims] [Claim 1] A reaping device 3 provided at a low front position of a vehicle chassis 2 having a traveling device 1 is provided with a pulling lug in front of the reaping device 3 that engages the stem culm of the rush and pulls it up while moving it to the rear upper part. A stem culm pulling device 4 is provided, and around an oblique axis extending from the rear of a fixed branching body 12a fixedly disposed at the lower part of the front end of the body at a position in front of the stem culm pulling device 4 toward the top of the stem culm pulling device 4. In the weeding device of the rice harvester, which is provided with a rotating rotary weed cutting body 5, the rotary weed cutting body 5 is formed into a cross-sectional shape with different widths in the orthogonal direction, and whose outer peripheral portion is It is characterized in that it is formed to have a smooth curved surface and is configured to be rotated around an axis at its center position, and at least the front end side of the rotating weeding body 5 is formed into a tapered shape. Grass splitting device in a strawberry harvester.