JP3333097B2 - Ridge forming equipment - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a ridge forming apparatus for forming a ridge having a width smaller than a plowing width by mounting a ridge forming tool on a rotary tiller.

[0002]

2. Description of the Related Art As a device for forming a ridge having a width smaller than the tillage width by mounting a ridge forming tool on a rotary tiller, a narrow ridge forming tool is slidably mounted on a toolbar in a left-right slidable manner. On the other hand, there is a type in which the tractor is turned left and right to offset the ridge, and after forming one ridge, the tractor is turned over and the ridge forming tool is offset in the opposite direction to form a new ridge adjacent to the existing ridge.

[0003]

In the above-mentioned prior art, a method is employed in which the ridge forming tool is slidably mounted on the toolbar so as to be slidable in the left and right directions. It is very difficult to slide,
Workability was poor. Also, since the ridge forming tool protrudes greatly behind the rotary tiller, when turning the tractor,
In some cases, the ridge forming tool may be damaged by colliding with the concrete cayhan.

According to the present invention, the ridge shaping tool is swung right and left via a parallel link, and guard members are arranged on the left and right sides of the ridge shaping tool, thereby facilitating the movement of the ridge shaping tool. An object of the present invention is to provide a ridge forming apparatus which can easily form a ridge of the ridge and prevent breakage of the ridge forming tool. Further, the present invention avoids interference with the parallel link by forming the guard member with a gauge wheel so that the height of the working portion is also used, and forming a middle portion of the support member supporting the guard member in a mountain shape. It is an object of the present invention to provide a ridge forming apparatus capable of adjusting the front and rear positions of a ridge forming tool by forming a parallel link such that the length of the parallel link is adjustable.

[0005]

The concrete means for solving the problem in the present invention is the support of the rotary tiller 2.
The front part of the pair of left and right parallel links 4 is connected to the arm 12 , and the ridge forming tool 5 that forms a ridge narrower than the tilling width of the rotary tiller 2 is connected to the rear part of the parallel link 4 so that the left and right positions can be freely changed. A support member (8) is provided for holding the angle of the parallel link (4) with respect to the support arm (12) and for holding the left-right changing position of the ridge forming tool (5), and supporting a guard member (7) for guarding the left and right outer sides of the ridge forming tool (5). Of the support arm
That is, it is attached to the system 12 .

Accordingly, the ridge forming tool 5 is easily moved to form a narrow ridge easily, and the guard member 7 prevents the ridge forming tool 5 from being damaged. A second specific means for solving the problem in the present invention is that, in addition to the first specific means, the guard member 7 is formed by a gauge wheel, and this gauge wheel is connected to the ridge forming tool 5 in the front-rear direction. That is, they overlap.

This prevents breakage of the ridge forming tool 5 while setting the height of the rotary tiller 2 and the ridge forming tool 5 with the gauge wheel. Further, a third specific means for solving the problem in the present invention is that in addition to the first or second specific means, a support member 8 for supporting the guard member 7 rearward from the support arm 12 is extended. The middle part of the support member 8 is formed to be bent in the shape of a side view so as to be separated upward from the parallel link 4.

[0008] This prevents the parallel link 4 from interfering with the support member 8 when swinging. Furthermore, a fourth specific means for solving the problem in the present invention is the parallel link 4 in addition to any one of the first to third specific means.
Is formed so as to be freely adjustable in length. Thereby, the front-back position of the ridge forming tool 5 with respect to the rotary tiller 2 is adjusted.

[0009]

Embodiments of the present invention will be described below with reference to the drawings. In FIGS. 1 and 2, reference numeral 1 denotes a ridge forming device, which is configured by mounting a ridge forming tool 5 on a rotary tiller 2 which is mounted on a rear part of a tractor via a three-point link mechanism so as to be movable up and down.

The machine frame 3 of the rotary tiller 2 has support arms 12 projecting left and right from a central gear case 11, a side frame 13 is fixed to the outer end of one support arm 12, and the other support arm 12 is fixed. The transmission case 14 is fixed to the outer end of the housing to form a substantially gate shape. A claw shaft 1 is provided between the lower portion of the side frame 13 and the transmission case 14.
5 is rotatably supported, and a large number of tillage claws 17 are mounted on the claw shaft 15 via a claw mounting bracket 16, thereby forming a tillage portion 18.

Reference numeral 19 denotes a cover device attached to the machine frame 3 so as to cover the tilling unit 18. A main cover 19A that covers the upper part of the tilling unit 18, and is pivotally connected to the rear of the main cover 19A, and is behind the tilling unit 18. Cover 19B, tilling part 1 that covers
8, a rear cover 19D that covers the rear side of the tilling unit 18, and the like. The rear cover 19B has a rear lower portion mounted on the ridge forming tool 5. .

A mounting bracket 21 projecting forward and rearward is fixed to a middle portion of each of the left and right support arms 12, and a lower link connecting pin 22 is provided at a front portion of the mounting bracket 21, and a support member 8 is provided at a rear portion. Are pivotally connected so as to be able to swing up and down. Each of the left and right support members 8 is formed of a strip shaped like a letter when viewed from the side, and the middle part in the front-rear direction may be connected to each other by a horizontal member. The toolbar 23 is connected between a pair of left and right rear ends. I have.

A gauge wheel as a guard member 7 is attached to both left and right ends of the toolbar 23. The gauge wheel has a wheel 7A and a support 7B. The wheel 7A is arranged so as to roll on substantially the track of the side frame 13 and the transmission case 14, but the position of the support 7B is adjusted with respect to the toolbar 23. It is preferable to be able to do so. Toolbar 23
Alternatively, between the support member 8 and the top mast 24 fixed on the gear case 11, the height of the toolbar 23, that is,
Height adjusting means 25 for adjusting the plowing depth is provided.

A pivotal support 27 is fixed to the outer side of the mounting bracket 21 in the middle of each of the left and right support arms 12, and the left and right pivotal support 27 has a pivotal support pin 28 at the front of a pair of left and right parallel links 4. The parallel link 4 is arranged so as to be slightly inclined rearward and downward from the support arm 12. The left and right parallel links 4 are telescopically fitted with two large and small hexagonal pipes, and the length of expansion and contraction can be adjusted freely. After adjusting the length, they are fixed with length determining pins 29. The rear part of the parallel link 4 is pin-connected to a fitting body 30, and this fitting body 30 is fitted and fixed to an intermediate support bar 31 made of a square pipe so that the relative position can be adjusted.

A connecting body 32 projects rearward and downward from the intermediate support bar 31, and a rear support bar 33 is attached to the rear end thereof. The connecting body 32 is formed by connecting a plate material fixed to the intermediate support bar 31 and the rear support bar 33 by bolts, and one plate material is formed with an arc hole 32A for bolt insertion, and is bendable. Has been.

The ridge forming tool 5 has left and right side plates 35 for forming the left and right side surfaces of the ridge, and a central upper plate 36 for forming the upper surface of the ridge. It is installed so that the position can be adjusted and the vertical position can be adjusted freely, is set so as to form a ridge narrower than the tillage width of the rotary tiller 2, and the width and height of the ridge to be formed can be adjusted. I have.

At least one of the left and right pivot supports 27 is provided with holding means 6 for fixing the angle of the parallel link 4 with respect to the machine frame 3. The holding means 6 is configured to penetrate a holding pin 37 through a hole 38 formed in the pivotal support 27 and the parallel link 4, and the hole 38 is formed to position the parallel link 4 at a position swinging right and left. ing. A hole for positioning the parallel link 4 at the center position may be formed.

The ridge forming apparatus 1 is mounted on a tractor, swings the parallel link 4 to offset (displace) the ridge forming tool 5 to one of the right and left sides, and grounds the gauge wheel 7 so that, for example, To cultivate, flat ridges, high ridges or high ridges are formed while tilling. When the tractor reaches the ridge, it turns while lifting the ridge forming device 1,
The holding means 6 is once released, and the pair of left and right parallel links 4 are rocked and displaced in opposite directions to change the left and right positions of the ridge forming tool 5 so that the holding means 6 is acted on again. A ridge narrower than the width of the next rotary tiller 2 is formed so as to be adjacent to the ridge.

The narrow ridge is about half to three-fourths of the cultivation width, and when forming the adjacent ridge, a portion which is not ridged while being plowed when the previous ridge is formed is plowed. In a field where a lot of tilling occurs, and there are many residual plants after paddy fields, ridges can be formed while grinding the remaining plants. When the tractor turns on the headland, even if the ridge forming tool 5 is likely to collide with the ridge, the guard member (gauge wheel) 7 which is located outside the ridge and overlaps in the front-rear direction is located.
The ridge forming tool 5 is prevented from directly colliding with the ridge.

Since the middle part of the support member 8 is bent and formed in a mountain shape and is separated from the parallel link 4, even if the parallel link 4 is swung, the parallel link 4 and the intermediate support bar 31 are not supported by the support member 8. To avoid interference. FIG. 3 shows a main part of a second embodiment of the ridge forming apparatus, and includes a left and right pivot support 27.
On one side, the front of the parallel link 4 and a fixed pivot pin 28
An arc gear 40 is provided, and a screw gear 41 that meshes with the arc gear 40 is supported by the support arm 12, and a motor 42 that drives the screw gear 41 is also attached to the support arm 12.

By driving the motor 42, the parallel link 4 is swung to change the left and right positions of the ridge forming tool 5,
By stopping the drive, it can be held at the pivoted position. The motor drive mechanism also serves as the holding means 6. FIG. 4 shows a main part of a third embodiment of the ridge forming apparatus. One of the left and right pivot supports 27 is provided with an arm 44 on a front portion of the parallel link 4 and a fixed pivot pin 28. A cylinder rod of a hydraulic cylinder 46 fixed to the support arm 12 is pin-connected to the long hole 45 of the arm 44.

Therefore, by actuating the hydraulic cylinder 46, the parallel link 4 is swung to change the left and right positions of the ridge forming tool 5, and the operation is stopped to seal the oil.
It can be held in the swung position. A drive mechanism by the hydraulic cylinder 46 also serves as the holding unit 6. Note that the present invention is not limited to the above embodiment, and can be variously modified. For example, the guard member 7 may be provided by providing only the support 7B at the rear of the support member 8 or by providing a plate material that covers the left and right outer sides of the ridge forming tool 5, and the drive mechanism for swinging the parallel link 4 has another configuration. May be.

[0023]

According to the present invention as described above in detail, it can be easily left repositioning ridge former 5 by swinging flat row link 4, and easily molded ridges narrow in the ridges forming tool 5 While the guard member 7 can prevent the ridge forming tool 5 from being damaged.

Further, while setting the height of the rotary tiller 2 and ridges forming tool 5 in gauge wheels, it is possible to prevent damage to the ridges former 5. Furthermore, even if the parallel link 4 is swung,
Interference with the support member 8 can be avoided.

[0025] Furthermore, it is possible to adjust the longitudinal position of the ridge former 5 for B Tari tiller 2.

[Brief description of the drawings]

FIG. 1 is a sectional side view showing an embodiment of the present invention.

FIG. 2 is an explanatory view showing the development of the rear surface.

FIG. 3 is a plan view of a main part showing a second embodiment.

FIG. 4 is a plan view of a main part showing a third embodiment.

[Description of Signs] 1 Ridge forming device 2 Rotary tiller 3 Machine frame 4 Parallel link 5 Ridge forming tool 6 Holding means 7 Guard member (gauge wheel) 8 Support member

──────────────────────────────────────────────────続 き Continued on the front page (72) Inventor Tetsuaki Hayashi 64 Ishizukitamachi, Sakai City, Osaka Prefecture Inside Kubota Sakai Works Co., Ltd. (72) Inventor Plow Tadayoshi 38, Sairinji, Yahagicho, Okazaki City, Aichi Pref. Co., Ltd. (72) Inventor Toru Yoshida 1307 Okubo, Nakayama, Nishinone, Inashiki-gun, Ibaraki Pref. Examiner, Tsukuba Industries Co., Ltd. Kyo Miyazaki (56) References −43705 (JP, A) Actually open 1979-168313 (JP, U) Actually open, 1979-65901 (JP, U) Actually open, 59-179501 (JP, U) Actually open, 44-15305 (JP, Y1) (58) Fields investigated (Int. Cl. ⁷ , DB name) A01B 35/00

Claims (4)

(57) [Claims] 1. A support arm for a rotary cultivator (2).
A front part of a pair of left and right parallel links (4) is connected to (12) , and a ridge forming tool (5) for forming a ridge narrower than a tilling width of a rotary tiller (2) is connected to a rear part of the parallel links (4). The ridge forming tool (5) is provided with holding means (6) for fixing the angle of the parallel link (4 ) with respect to the support arm (12) and holding the left-right changing position of the ridge forming tool (5). The guard member (7) that guards the left and right outer sides of 5) is supported.
Hold the front end of the supporting member (8) to the support arm (1).
A ridge forming device, which is attached to 2) . 2. The ridge forming device according to claim 1, wherein the guard member is formed of a gauge wheel, and the gauge wheel overlaps the ridge forming tool in the front-rear direction. apparatus. 3. A support member (8) for supporting a guard member (7) extends rearward from the support arm (12) ,
The ridge forming apparatus according to claim 1 or 2 , wherein a middle portion of the support member (8) is formed in a shape of a letter U as viewed from the side so as to be separated upward from the parallel link (4). Wherein said parallel link (4) the length adjustably formed to have it ridges forming apparatus according to any <br/> of claims 1 to 3, characterized in.