JPH0365117A - Grass diving structure of rush harvester - Google Patents

Abstract

PURPOSE:To reduce winding, breakage, etc., of rushes and suppress production of noise by constructing each grass dividing rotation unit from a lever unit formed so as to provide a noncircular cross-sectional shape and a smooth curved surface in an outer peripheral part and equipping only part of the frontal end side of the outer peripheral part with a scraper for preventing stems and culms from twining. CONSTITUTION:Devices 2 for raising up stems and culms are provided in front of a machine body and each grass dividing rotation unit 21 is provided obliquely from the back of a grass divider 20 fixed to the lower part of the front end of the machine body in front of the devices 2 for raising up toward the top thereof. The grass dividing rotation unit 21 is constructed of a lever unit formed so as to provide a noncircular cross-sectional shape and a smooth curved surface in an outer peripheral part. Since a scraper 29 for preventing stems and culms from twining is capable of preventing production of noise, the scraper is provided adjacently to only part on the frontal end side of the outer peripheral part of the grass diving rotation unit 21, which is rotated and driven around the shaft center at the central position in the noncircular cross section thereof. Entangled planted rushes are slowly distributed from the root parts upward to carry out grass dividing.

Description

Detailed Description of the Invention [Field of Industrial Application] The present invention includes a stem culm pulling device at the front of the machine body, and a weeding tool fixedly disposed at the bottom of the front end of the machine body at a position in front of the pulling device. The present invention relates to a weeding structure for a straw harvester, in which a weeding rotary body that is driven and rotated around an oblique axis extending from the rear toward the top of the pulling device is disposed.

[Conventional technology]

In the above-mentioned branch structure, conventionally, for example,
As disclosed in Japanese Patent Application No. 21021, the weeding rotor is constructed of a rod material formed into a curved shape, and both ends of the weeding rotor are supported and driven to revolve at high speed. was there.

[Problem to be solved by the invention]

The above-mentioned conventional structure is designed to allow the grass that is tightly entangled with each other to be smoothly and forcibly separated by the weeding rotor.

However, as mentioned above, because the structure involves swinging the curved rod at high speed to weed, it generates a lot of vibration.
This could be transmitted to the operating section of the aircraft, worsening the work environment, or transmitted to peripheral equipment, causing adverse effects. In addition, there was also a drawback that the grass weeding rotator could be wrapped around the end portion of the weeding rotary body with a small revolution radius, causing damage by tearing the grass or hindering rotation. Furthermore, since the structure is such that thin rods are swung around at high speed, they collide with the straw grass with a strong force, causing many breaks and deteriorating quality.

The present invention aims to eliminate the above-mentioned disadvantages through rational improvements.

(Means for Solving the Problems) A feature of the present invention is that in the weeding structure of the straw harvester described at the beginning, the weeding rotor has a non-circular cross-sectional shape and a smooth outer circumference. It is composed of a rod shaped to have a curved surface, and is configured to be rotated around an axis at the center position of its non-circular cross section. The main feature is that a scraper to prevent wrapping is placed nearby.

[For production]

The weeding rotor rotates on its own axis and applies vibrations caused by the circumferential difference in the distance from its center of rotation to the outer periphery to the entangled planted grasses, gradually moving upward from the root part. I will separate the grass as much as I can. Moreover, since the above-mentioned vibration action is carried out over substantially the entire length, even if the straw grass tries to wrap around the shaft, it can effectively prevent the winding.

Also, even if foreign objects such as weeds or eyebrows that are wet from rain or morning dew try to wrap around the weeding start end of the weeding rotor,
The above-mentioned distribution continues the weeding while being effectively scraped off by the scraper and preventing the weeds from becoming entangled.

〔Effect of the invention〕

As a result, compared to a method in which thin rods are sorted at high speed while colliding with the grass, it is now possible to separate the grass with less entanglement or breakage.

In addition, a structure in which the above-mentioned scraper is disposed close to the grazing rotor over substantially the entire length of the outer circumference of the grazing rotor which rotates at high speed can be considered to achieve the same effect as the above. The structure has a thin plate-like scraper that extends long along the body, which has the disadvantage of increasing vibration noise due to collisions with grass, etc., and the gap between the scraper and the outer periphery of the weeding rotor is narrow due to rotational movement. However, in the present invention, there is a disadvantage that there is a high risk of getting your hand caught in the gap when removing the wrapped eyebrows. Since the scraper is provided only on a part of the front end side where there is a large amount of scraper, it has the advantage that it is possible to effectively prevent foreign matter from getting wrapped around, suppress the generation of vibration noise, and ensure safety during maintenance work.

〔Example] I will explain about the riding-type strawberry harvester.

As shown in Figures 3 and 4, a pair of left and right weeding devices (1), (1) are used to untangle the planted culms, and a pair of left and right weeding devices (1) are used to introduce and raise the planted grass after the weeding. Raising device (2)
(2) A clipper-type reaping device (3) for cutting the roots of the grass that has been pulled up is installed on one side of the front end of the traveling machine (4), and the upper part of the grass that has been cut is suspended. A front and rear clamping and transporting device (5) is provided which clamps and transports the grass at the rear of the machine and diagonally upward, and a transporting device (8) which forcibly transports the part of the clamped grass on the side of the plant toward the side of the machine. At the same time, the conveyor device (8) provides a blower device (6).
A) Air blower (6A) Blowing up the plant side part of the rice plant that has been forcibly carried forward against the wind force released from the air outlet (6a) upward by the air emitted from the air outlet (6a). A wind-type selection device (6) is installed to select the area between the eyebrows, and the part of the rush that is blown up by the discharged wind is tied to a bed (
10) It is equipped with a locking claw lifting and conveying device (12) that guides the grass upward, and also conveys it toward an auxiliary selection device (13) that selects the rush placed on the binding bed (10) and a binding device (7). A conveyance device (17) and a binding device (7) for binding are arranged, and these are mounted on a reaping frame (33), and this reaping frame (33) is aligned with the horizontal axis (X) with respect to the traveling machine body (4). ), and this binding device (
7) is moved up and down by a hydraulic cylinder (14) and a pantograph-type lifting link mechanism (19) at the rear of the 7), and vertically swings (dumping action) integrally with the pantograph-type lifting link mechanism (19) at the rear fulcrum (Y). A loading platform (15) is provided to
The receiving rod (37), which serves as a side wall for catching the accumulated grass at the rear end of the loading platform (15), is installed so as to tilt backward, and the engine (16) is installed on the side opposite to the lifting device (2). and a driving section (9), which are connected to the left and right crawler traveling device (
11) and (11) are mounted on a traveling body (4) to constitute a riding type straw harvester.

Next, the weeding device (1) will be explained.

The reaping frame (33) is made to protrude further forward than the lifting device (2), and a weeding tool (20) that enters the base of the roots of the planted strawberry and rips the grass is fixedly attached to the front end of the reaping frame (33). The weeding device (1) is equipped with a weeding rotary body (21) that is driven and rotated around an oblique axis extending from the rear of the weeding device (20) toward the top of the pulling device (2). It is configured.

To be more specific, as shown in FIGS. 1 and 2, the weeding rotor (21) is composed of a rod whose bottom has an oval cross-sectional shape, and the axial center (Z ) is configured to be rotated around the

That is, a rotational support shaft (22) is provided extending through the center, and the lower end of this rotational support shaft (22) is supported by a bearing on a bearing member (23) bolted to the front end of the reaping frame (33). Universal joint (24) at the top end
It is interlocked and connected to the transmission shaft (25) via. and,
A cylindrical member (28) having a perfect circular cross section is connected between the support members (26) and (27) fixed to the upper and lower parts of the rotation support shaft (22) in a shaft-extraposition state, and the cylindrical member (28) by extrapolating the weeding rotary body (21) to the outer peripheral portion of the supporting members (26).

It is fixedly attached to (27). The weeding rotor (21
), as shown in Fig. 5, is configured to be rotated counterclockwise toward the direction of movement of the aircraft, and is preliminarily set to the left side in the direction of movement so that the starting point of the weeding for planted straw grass is aligned and laid down. The structure is such that the vibration effect is effectively distributed from the end portion to the end portion, so that entanglements in the front-rear direction can be effectively resolved. Further, the weeding rotor (21) can be rotated at a low speed (for example, about 750 PPM) or at a high speed (for example, 13B).
The transmission system (about the same
(not shown), and can be used depending on the degree of entanglement. Incidentally, the rotation speed of the engine (16) is about 360 ORPM, and the pulling speed of the pulling device (2) is set to about 1.48 m/sec. or,
The inclination angle (α) of the pulling device (2) from the vertical position is set to about 20 degrees, and the rising inclination angle (β) of the weeding rotor (21) is set to about 52 degrees.

A scraper (29) for preventing stem culm is disposed close to only a part of the lower front end side of the outer periphery of the weeding rotor (21).

The scraper (29) is made of an elastic body such as rubber, and as shown in FIG. ) and (31), the scraper (29) is left open so as to be clamped and fixed and supported.

The material of the weeding rotor (21) may be a synthetic resin material or a metal material such as iron.

[Another example]

The weeding rotor (21) may be one in which small-diameter round pipes (36), (36) are arranged in parallel as shown in FIG. 6 and rotated around their contact points, or as shown in FIG. It may also have an elliptical cross section. Also, the 8th
The cross-sectional shape may be changed to various shapes such as a triangular shape as shown in the figure or a rectangular shape as shown in FIG. 9.

Incidentally, although reference numerals are written in the claims section for convenient comparison with the drawings, the present invention is not limited to the structure shown in the accompanying drawings.

[Brief explanation of drawings]

The drawings show an embodiment of the weeding structure of the straw harvester according to the present invention, FIG. 1 is a longitudinal sectional side view of the weeding device, and FIG.
Figure 3 is a side view of the entire straw harvester, Figure 4 is an overall plan view of the rice harvester, Figure 5 is a diagram showing the state of weeding action as seen in the direction of movement of the aircraft, 9 through 9 are cross-sectional views of another embodiment of the weeding rotary body. (2)...Lifting device, (20)...
Grass cutting tool, (21)... Grass cutting rotor, (29)
...Scraper.

Claims (1)

[Claims] A stem culm pulling device (2) is provided at the front of the machine, and the pulling device (2) is installed from the rear of a weeding tool (20) fixedly provided at the bottom of the front end of the machine at a position in front of the pulling device (2).
This is a weeding structure for a strawberry harvester, in which a weeding rotary body (21) is arranged to drive and rotate around an oblique axis toward the top of the strawberry harvester, and the weeding rotary body (21) has a cross-sectional shape. It is composed of a rod that is non-circular and has a smoothly curved outer circumferential surface, and is configured to be rotated around an axis at the center of the non-circular cross section, and the weeding rotor ( 21) A grass dividing structure of a straw harvester in which a scraper (29) for preventing stem culm from being wrapped is disposed close to only a part of the front end side of the outer periphery of the straw harvester.