JP2003299401A - Tilling apparatus - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To prevent deterioration of tilling performance and carry out stabilization and maintenance of the tilling performance by forcibly scraping soil attached to the inner peripheral surface of a rotary cover 23 away in a short time by a scraper 32 integrally equipped in a tilling apparatus 12. <P>SOLUTION: In the tilling apparatus equipped with a rotary cover 23 for covering a tilling rotary 12a, a scraper 32 moved along the inner peripheral surface of the rotary cover 23 is provided. <P>COPYRIGHT: (C)2004,JPO

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a cultivating device, such as a tractor or a management machine, which is mounted on the rear side of a work vehicle to perform a cultivating work during traveling.

[0002]

Conventionally, in the structure having the rotary cover on the outer periphery of the tilling rotary,
As soil adheres to the inner surface of the rotary cover, the tiller becomes heavy and the front-rear balance becomes poor, making it difficult to move in and out smoothly in fields such as fields. There is an inconvenience such that the nail is greatly worn due to the contact between the nail and the soil. For this reason, there is a means to stretch the elastic body such as rubber on the inner surface of the rotary cover to make it difficult to attach the soil or to accelerate the fall of the soil. Couldn't expect.

[0003]

SUMMARY OF THE INVENTION Therefore, the present invention provides a cultivating apparatus having a rotary cover for covering a cultivating rotary, wherein a scraper for moving along the inner peripheral surface of the rotary cover is provided, and the inner peripheral surface of the rotary cover is provided. The scraped soil is forcibly scraped off in a short time by a scraper that is integrally equipped with the tilling device to prevent deterioration of the tilling performance and to maintain stable maintenance of the tilling performance.

In addition, the inner peripheral surface of the rotary cover is formed in a shape along the rotational locus of the rotary pawl, and the rotary cover is provided so as to be able to come into contact with and separate from the rotary pawl in a stepless manner so that the rotary cover can be kept inside the rotary cover during plowing work. According to the amount of soil adhering to the peripheral surface, the rotary claws are brought close to each other to forcibly scrape off the soil to easily maintain stable tilling performance.

Further, the inner peripheral surface of the rotary cover is formed in a shape along the rotational locus of the rotary claw, and the rotary cover is movably provided in the vertical or left-right direction of the rotary shaft so that the adhered soil on the inner peripheral surface of the rotary cover is formed. The rotary claws are brought into contact with the bottom or the left and right lateral directions to efficiently scrape off the adhered soil to easily maintain the stable tilling performance.

[0006]

BEST MODE FOR CARRYING OUT THE INVENTION Embodiments of the present invention will be described in detail below with reference to the drawings. 1 is a side view of the whole, FIG. 2 is a plan view of the same, FIG. 3 is a side view of a rotary tiller, and FIG. 4 is a plan view of the same. In FIG. 1, 1 is a tractor that is an agricultural work vehicle, Left and right front wheels 4 and 4 are installed on both sides of the hood 3 in which the engine 2 is installed, a round steering handle 5 is provided at the rear of the bonnet 3, and a driver seat 6 is installed behind the handle 5 and a driver seat 6 is provided. The left and right rear wheels 7 and 7 are installed outside on both sides, and the left and right brake pedals 9 and 9 and the clutch pedal 10 are arranged in step 8 on the front side of the driver's seat 6 so that the operator can sit on the driver's seat 6 Along with traveling, a cultivating rotary working machine 12, which is a cultivating device having a cultivating rotary 12a through a three-point link mechanism 11 at the rear of the tractor machine body, is vertically movable to perform cultivating work.

[0007] Further, the main traveling gear shift lever 13 and the working machine 1
An elevating lever 14 for raising and lowering 2 is disposed on the right side of the driver's seat 6, and a traveling auxiliary shift lever 15 and a PTO shift lever 16 for shifting the output of the working machine 12 are disposed on the left side of the driver's seat 6. There is.

The rotary working machine 12 is of a side drive type, a gear box 17 is arranged in the center, and an input shaft 18 is connected to the PTO shaft of the tractor 1 via a drive shaft with a universal joint to transmit power to the gear box. A beam 19 is projected from the side surface of the box 17 to both sides, an upper part of a chain case 20 is fixed to an outer end of the beam 19, and a lower part of the chain case 20 is provided with a rotary shaft of a plowing claw 21 and the plowing shaft 21 is crossed. A large number of rotary pawls 22, which are rotary pawls, are radially planted on the pawl shaft 21 in a radial view in a side view, and a rotary cover 23 covers the upper part of the rotary locus of the plow pawl 22 and side covers 24 on both sides. Covering. The tiller shaft 21 is attached to the gear box 17
Drives through the internal gear, the transmission shaft in the beam 19, the sprocket in the chain case 20 and the chain, and the tiller claw 22
I am trying to cultivate by rotating.

A rear cover 27 having a rear side cover 26 is swingably connected to the rear end of the rotary cover 23 via a fulcrum shaft 25, and is supported by a fixed bracket 28 above the rotary cover 23 via a support rod 29. A rear cover 27 is connected so that the height can be adjusted freely.

Further, the left and right eccentric claws 30 are attached to both ends of the tiller claw shaft 21, and the tiller claws 22 are attached between the left and right eccentric claws 30 in multiple rows at substantially equal intervals. The four claw holders 31 are projected in a radial direction at intervals of about 90 ° in one row of the circumference, and the plowing claws 22 made of naginata-shaped claws are fixed to the claw holder 31.
The curved tip portions for inverting the soil after cutting are arranged alternately in a line in the circumferential direction in the opposite directions in the left and right directions so as to be in the same direction at the 180-degree opposite position.

As shown in FIGS. 5 and 6, the scraper 3 is moved along the inner peripheral surface of the rotary cover 23.
2 is provided, and the rotary cover 23 is a rear surface (flat surface).
The dome 19 is formed in a gate shape, and the chain cases 20 on both left and right ends
And bearing bodies 34 and 35 for supporting the pawl shaft 21 of the support plate 33.
A scraper operating lever 3 for fixing the base end to the right side plate 32a of the scraper 32 while rotatably fitting the ring-shaped portions 36 on the left and right base ends of the rotary cover 23 to the circular outer periphery of the scraper 32.
The tip end side of 7 is projected to the right outside through the opening 38 of the side cover 24, and the scraper 32 is rotated around the pawl shaft 21 by the operation lever 37 to move along the inner peripheral surface of the rotary cover 23. The soil attached to the inner peripheral surface of the cover 23 is forcibly shaved off to prevent deterioration of the tilling performance and to maintain stable tilling performance.

In FIGS. 7 to 11, the inner peripheral surface of the rotary cover 23 is formed in an arc shape along the rotation locus A of the tilling pawl 22, and the rotary cover 23 is provided so as to be attachable to and detachable from the tilling pawl 22. The structure shown in FIG. 7 is such that the spring seat 39 is fixed to the bearing bodies 34 and 35, and the spring compression plate 40 provided at the lower end of the rotary cover 23 is attached to the guide shaft 4.
1 and a compression spring 42, the spring seat 39 is supported so as to be vertically movable (floating), and a cam 43 for pressing the upper surface of the rotary cover 23 is provided on a lever shaft 45 of a cam operating lever 44, which is used during normal plowing work. While holding the rotary cover 23 in the upper moving position by the force of the spring 42,
When removing the soil of the operating lever 44 that moves the rotary cover 23 downward by the cam 43 against the force of the spring 42, the soil attached to the inner peripheral surface of the rotary cover 23 is forcibly scraped off by using the rotation of the plowing pawl 22 or the like. It is configured to easily maintain stable tilling performance.

In addition, as shown in FIG. 8, the front end of the rotary cover 23 supports a fulcrum shaft 45 swingably on the work machine 12 main body side, and the rear end side of the cover 23 has a rotary screw shaft 46 and a screw shaft. A handle 48 that is vertically movably supported via a holder 47 and that rotates a screw shaft 46.
With this operation, the rotary cover 23 is swung about the fulcrum shaft 45 to bring the rotary cover 23 into contact with and away from the tilling claw 22.

In FIG. 9, the side cover 24 of the rotary cover 23 is provided with a swing fulcrum shaft 49 and a swing operation lever 50 which are eccentric from the pawl shaft 21, and the fulcrum shaft 49 is centered by the operation lever 50. As a result, the rotary cover 23 is rotated so that the tilling work state is set when the rotary cover 23 is separated from the tilling claw 22 and the rotary cover 23 is brought close to the tilling claw 22, and the inner peripheral surface of the cover 23 is attached by the tilling claw 22. The soil is scraped off to remove the soil.

In FIGS. 10 and 11, the screw shaft holder 51 fixed to the beam 19 is attached to the rotary operation handle 5.
The rotary cover 23 via the rotary screw shaft 53 having two
Is vertically movably supported, and the lower end side of the rotary side cover 24 is slidably overlapped with a central side cover 54 fixed to the bearing bodies 34 and 35, so that the rotary cover 23 moves upward during the plowing work and the cover 23. Side cover 24.5 in any state when removing soil
It is configured to prevent a gap from being formed between the four.

FIG. 12 shows a rotary cover 23.
Is supported by a guide 55 on the main body side of the working machine 12 so as to be slidable left and right, and the rotary cover 23 is movably connected to the left and right sides via a rotary screw shaft 58 having a rotary operation handle 57 to a screw shaft holder 56 on the main body side. The soil B adhering between the plowing pawls 22 on the inner peripheral surface of the cover 23 in a shape along the pawl shape is efficiently scraped off by the rotation of the plowing pawls 22 when the rotary cover 23 is laterally moved by the operation of the handle 57. There is.

13 and 14, the brush 59 having the same length as the tilling width to be brought into contact with the inner peripheral surface of the rotary cover 23 is integrally supported on the tiller shaft 21 through the support member 60. The support member 60 has a gate-shaped mounting portion 60a made of a leaf spring to be fitted to the outside of the nail holder 31 for mounting the tilling nail 22, and the mounting portion 60a has a nut 62 of the nail mounting bolt 61 of the nail holder 31. (Or the head of the bolt) is formed with a fitting hole 63 for positioning the attachment portion 60a to be attached / detached to / from the holder 31 by one-touch operation and preventing the detachment. It is configured to scrape off the adhered soil on the inner peripheral surface of the cover 23 when the cover 23 is mounted and rotated.

In the structure shown in FIG. 15, a linear member 64 such as a piano wire is stretched in the left-right direction substantially in parallel with the cultivating shaft 21, and both ends of the linear member 64 are projected from the elongated guide holes 65 of the side cover 24. In the cover 23, the linear member 64 is movably provided in the front-rear direction along the inner peripheral surface of the rotary cover 23, and the projecting ends of the linear member 64 are operated to move the linear member 64 back and forth. It is configured to scrape off the adhered soil on the peripheral surface.

16 to 18 show an example of a structure in which an elastic plate-like lining member 66 for preventing soil adhesion is fixed to the inner peripheral surface of the rotary cover 23, and the one shown in FIG. The inner surface of the cover 23 is fixed by bolts 68 with elastic lining members 66 made of rubber or the like that form a smooth surface with no irregularities inside, and a plurality of air layers 67 in the shape of tunnels in the left-right direction formed at equal intervals. The material of the tension member 66 and the air layer 67 are configured to prevent the soil from adhering well due to the vibration of tilling due to the elastic effect.

In FIG. 17, an elastic molding member 69 such as a corrugated rubber member is used as the lining member 66, and the molding member 69 is used for the rotary and rear cover 23.
The molded member 6 is fixed to the inner peripheral surface of 27 by bolts 68.
A gap 70 formed between the cover 9 and the cover 23/27 promotes the generation of plowing vibration and suppresses the adhesion of soil.

Further, in the structure shown in FIG. 18 (1), an elastic plate member 71 such as a plate rubber having a bendable thickness is used as an inner lining member 66.
The plate member 71 is corrugated and fixed to the inner peripheral surfaces of the rotary and the rear covers 23 and 27 by bolts 68. The elastic member 72 made of rubber or the like is shown in FIG. 18 (2). A plurality of convex cavities 73 formed inside is used as the lining member 66, and the outer surface of the elastic member 72 is also formed into an uneven surface 72a along the shape of the cavity 73, thereby reducing the weight of the elastic member 72. At the same time, the uneven surface 72a of the elastic member 72 suppresses the adhesion of soil.

Further, as shown in FIG. 19, a cleaning port 74 is provided in the rotary cover 23 and the rear cover 27, and the cleaning port 74 is normally closed by a stainless steel lid 75. 75 to bolt 76
It is configured to be detachably fixed via a paddle, and when the lid 75 is opened, a hand is inserted through the cleaning port 74 to easily remove mud attached to the tilling claw 22 and the like.

[0023]

As is apparent from the above-described embodiments, the present invention is a cultivating apparatus having a rotary cover 23 for covering the cultivating rotary 12a, in which a scraper 32 for moving along the inner peripheral surface of the rotary cover 23 is provided. Therefore, the soil adhered to the inner peripheral surface of the rotary cover 23 is forcibly scraped off for a short time by the scraper 32 that is integrally equipped with the cultivating device 12 to prevent deterioration of the cultivating performance and maintain stable maintenance of the cultivating performance. It can be achieved.

Further, the inner peripheral surface of the rotary cover 23 is formed in a shape along the rotation locus A of the rotary pawl 22, and
Since the rotary cover 23 is provided so as to be freely contactable and separable with respect to the rotary pawl 22, the rotary pawl 22 is brought close to the rotary pawl 22 according to the amount of soil adhered to the inner peripheral surface of the rotary cover 23 during the plowing work. Therefore, the soil can be forcibly shaved off, and stable maintenance of the tilling performance can be easily achieved.

Furthermore, since the inner peripheral surface of the rotary cover 23 is formed in a shape along the rotation locus A of the rotary claw 22, the rotary cover 23 is movably provided in the vertical or horizontal direction of the rotary shaft 21. It is possible to easily scrape off the adhering soil by contacting the adhering soil on the inner circumferential surface of the rotary cover 23 with the rotary claws 22 from below or from the lateral direction, and to easily maintain stable tilling performance. .

[Brief description of drawings]

FIG. 1 is an overall side view of a tractor.

FIG. 2 is an overall plan view of a tractor.

FIG. 3 is a side view of a rotary working machine.

FIG. 4 is a plan view of a rotary working machine.

FIG. 5 is a side view of the rotary tiller.

FIG. 6 is a rear view of the rotary tiller.

FIG. 7 is a structural explanatory view of vertical movement of a rotary cover.

FIG. 8 is a structural explanatory view of the swing of the rotary cover.

FIG. 9 is an explanatory view of the configuration of rotation of the rotary cover.

FIG. 10 is an explanatory side view of screw type vertical movement of the rotary cover.

FIG. 11 is a rear view of the rotary cover.

FIG. 12 is an explanatory diagram of a configuration of left and right movement of a rotary cover.

FIG. 13 is an explanatory view of brush equipment of the rotary cover.

FIG. 14 is an explanatory diagram of a brush mounting portion.

FIG. 15 is an explanatory view of the linear member equipment.

FIG. 16 is an explanatory view of a lining member.

FIG. 17 is an explanatory view of a lining member.

FIG. 18 is an explanatory view of a lining member.

FIG. 19 is an explanatory diagram of opening a cleaning port.

[Explanation of symbols]

12a Tillage rotary 21 Tillage axis (rotary axis) 23 Rotary cover 22 Cultivating claws (rotary claws) 32 scrapers A rotation locus

   ─────────────────────────────────────────────────── ─── Continued front page    (72) Inventor Kensaku Wakuta             Yanmar Agricultural Machinery 1-32 Chayamachi, Kita-ku, Osaka             Within the corporation (72) Inventor Takashi Hirano             Yanmar Agricultural Machinery 1-32 Chayamachi, Kita-ku, Osaka             Within the corporation (72) Inventor Tetsuro Etan             Yanmar Agricultural Machinery 1-32 Chayamachi, Kita-ku, Osaka             Within the corporation F term (reference) 2B033 AA05 AB01 AB11 AC05 BB02                       BD04 DB12 DB13 DB16 DB17                       DB32 DB42 DB44 DB47 ED09

Claims (3)

[Claims] 1. A cultivating device having a rotary cover for covering a cultivating rotary, comprising a scraper for moving along an inner peripheral surface of the rotary cover. 2. A tilling device, characterized in that an inner peripheral surface of the rotary cover is formed in a shape along a rotation locus of the rotary pawl, and the rotary cover is provided so as to be capable of contacting and separating steplessly with respect to the rotary pawl. 3. A tilling device, characterized in that an inner peripheral surface of the rotary cover is formed in a shape along a rotation locus of the rotary claw, and the rotary cover is movably provided in a vertical or horizontal direction of the rotary shaft.