JP2516478Y2 - Sowing machine coupling device - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION (a) Field of Industrial Application The present invention relates to a structure of a connecting device configured so that a seeder can be easily mounted on a rotary tiller of a tractor.

(B) Conventional technology and its problems Conventionally, the support structure of the seeder has been known. For example, it is like the technique described in Japanese Utility Model Publication No. 57-119609.

Further, in the conventional seeding machine, as shown in FIG. 5, parallel links 27, 27 are provided between the seeding frame 13 and the mounting beam 30, and the front end of the mounting beam 30 is used as the depth frame of the rotary tiller of the tractor. I was wearing it.

However, the pivot position of the parallel links 27, 27 is the sowing frame 1
Since it was provided separately before and after 3, the structure becomes complicated, the seeding machine itself becomes a structure that cannot follow pitching, and the drive roller 14 on the front side and the compression roller 15 on the rear side are higher than the unevenness of the field. When the seedlings were different, the seeding depth changed, the front part floated up and the drive roller slipped, and the back part floated up, resulting in incomplete suppression.

Further, the conventional seeding machine could not be mounted on the management machine as it was, and the connecting device was removed and a dedicated attachment was required.

(C) Means for Solving the Problem In view of such a point, the present invention is configured as follows.

A support body 6 is configured to be attachable to and detachable from a tool bar 5 arranged laterally with respect to the traveling direction. The rear end is pivotally supported by the mounting plate 9, and the support frame 12 is fixedly projecting obliquely downward from the mounting plate 9, and the pivot pin 19 is arranged at the lower end of the support frame 12, and the pivot pin 19 is used in the front-back direction. Pivotally supporting the seeding frame 13 near the center of gravity of the seeding frame 13, and the feeding device 17 and the hopper are attached to the seeding frame 13 in the portion of the pivot pin 19.
21 is fixed, and a stopper 18 is provided between the support frame 12 and the seeding frame 13 to prevent rotation above a certain level, a drive roller 14 is arranged in the front part of the seeding frame 13, and a compression roller 15 is arranged in the rear part. Is arranged.

(D) Operation of the device With such a configuration, if the support body 6 is attached to the depth bar of the rotary tiller attached to the tractor, the parallel link 7,7 allows the seeder C to move up and down in parallel to follow unevenness in the field. Of. Then, if the parallel links 7 and 7 are removed, it can be attached to a management machine or the like via an attachment at the tip of the support frame 12.

(E) Embodiment of the Invention The purpose of the invention is as described above, and the configuration of the embodiment shown in the attached drawings will be described.

FIG. 1 is an overall side view in which a seeder is attached to a rotary tiller of a tractor by the connecting device of the present invention, FIG. 2 is a rear perspective view of the same, and FIG. 3 is a side view of the connecting device and the seeder.

In FIGS. 1 and 2, a rotary tiller R mounted through a three-point link type working implement mounting device A at the rear of the tractor T is mounted. , The rotary tiller R
At the rear end of the depth beam 2, a depth bar 3 is laid horizontally, and a height-adjustable mounting body 4 is fitted to the depth bar 3. Further, a tool bar 5 is horizontally mounted on the attachment body 4, and a seeder C is attached to the tool bar 5 through a connecting device B of the present invention.

As shown in FIG. 3, the connecting device B has a support member 6 at the upper end.
And the support 6 is fitted on the toolbar 5. Further, parallel links 7 and 7 are pivotally supported on the lower portion of the support 6, and the other ends of the parallel links 7 and 7 are pivotally supported on the mounting plate 9.

A spring 10 is provided in a diagonal direction in the middle of the parallel links 7, 7 to urge the seeder C to rotate downward.

The mounting plate 9 is fixed to the center of a support pipe 11, and support frames 12 and 12 are fixed to both sides of the support pipe 11. The supporting frames 12, 12 are pivotally supported by pivoting pins 19 on the seeding frames 13, 13 in the vicinity of the center of gravity of the seeder C.

Stoppers 18, 18 are provided on the sides of the seeding frame 13 on both sides of the pivot pin 19 in the lower part of the support frames 12, 12. With the stoppers 18, 18, the seeding frame 1
The 3 can be rotated within a certain range.

At the front end between the seeding frames 13 and 13, a drive roller 14 is arranged, and at the rear end a pressure roller 15 is pivotally supported.
A feeding shaft 16 is horizontally installed at the center, and supports the feeding devices 17, 17. However, although two feeding devices are mounted in this embodiment, the number of feeding devices 17 may be one, and the number of seeders C can be increased or decreased according to the number of rows.

Lugs 14a, 14a around the side surface of the drive roller 14 ...
A chain case 20 is provided between the drive roller 14 on one side and the payout shaft 16 so that it does not slip out. Power is transmitted from the drive shaft 14b of the drive roller 14 to the feeding shaft 16. The feeding roll in the feeding device 17 is rotated by the rotation of the feeding shaft 16, and the seeds in the hopper 21 arranged above the feeding device 17 are fed.

A grooving device 22 is disposed below the feeding device 17, a scraper 23 of the drive roller 14 is provided at the front end of the grooving device 22, and a supporting rod 24 is provided upright behind the scraper 23, and a seeding frame is provided. Backed by 13. In addition, a supporting rod 25 is erected at the rear end of the grooving device 22, is supported by the seeding frame 13, and a cultivating soil plate 26 for projecting soil on the seeds after sowing is projected rearward from the lower portion thereof.

Further, as shown in FIG. 4, by removing the parallel links 7 and 7 and fixing the mounting body 8 to the support pipe 11, the rear end of the mounting body 8 is pulled at the front end of the engine frame 1 of the management machine K. It can be mounted on the section 1a, and the change of parts can be minimized, so that the management machine can be mounted.

(F) Effects of the Invention With the above configuration, the present invention has the following effects.

Firstly, since the mounting plate 9 and the supporting frame 12 are supported by the parallel links 7 and 7, the mounting plate 9 and the supporting frame 12 can be moved up and down in parallel in accordance with the unevenness of the field scene. You can do it.

Secondly, since the pivot pin 19 provided on the support frame 12 pivotally supports the vicinity of the center of gravity of the seeding frame 13, the weight before and after the seeding frame 13 is about the same when the field scene is flat. Even when the driving roller 14 and the pressure suppressing roller 15 are in contact with each other and the seeding frame 13 moves up and down due to the unevenness of the field, the driving roller 14 and the pressure suppressing roller 15 can quickly follow each other.

Thirdly, since the stoppers 18, 18 for restricting the rotation angle between the support frame 12 and the seeding frame 13 are provided, the part of the connecting device B rises and the part of the seeder C floats up from the field scene. Even if the stopper 18 and 1 are not unidirectionally lowered or raised in the front and rear of the seeding frame 13,
It is held within the angle specified by 8.

Fourthly, the feeding device 17 and the hopper 21 are provided near the pivot pin 19.
Since the position is arranged, the position of the center of gravity of the seeder C does not change even when the amount of seeds inside the hopper 21 changes, so that the above effect can be achieved.

[Brief description of drawings]

FIG. 1 is an overall side view in which a sowing machine is mounted on a rotary tiller of a tractor by the connecting device of the present invention, FIG. 2 is a rear perspective view of the same, and FIG. 3 is a side view of the connecting device and the sowing machine,
FIG. 4 is a side view showing a seeding machine as a management machine, and FIG. 5 is a perspective view showing a conventional coupling device. C ... Seeder R ... Rotary tiller 7 ... Parallel link 12 ... Support frame 13 ... Seeding frame 14 ... Drive roller 15 ... Packing roller 17 ... Feeding device

Claims (1)

(57) [Scope of utility model registration request] 1. A support body 6 is configured to be attachable to and detachable from a tool bar 5 arranged transversely to the traveling direction, and the front ends of parallel links 7 and 7 are pivotally supported at the rear end of the support body 6, and The rear ends of the links 7 and 7 are pivotally supported on the mounting plate 9, and the supporting frame 12 is fixedly projecting obliquely downward from the mounting plate 9, and a pivot pin 19 is arranged at the lower end of the supporting frame 12, A pin 19 pivotally supports the vicinity of the center of gravity of the seeding frame 13 arranged in the front-rear direction, and a feeding device is provided on the seeding frame 13 at the part of the pivot pin 19.
A stopper that fixes the hopper 17 and the hopper 21, and that prevents the rotation above a certain level between the support frame 12 and the seeding frame 13.
18. A sowing machine connecting device comprising 18 and a drive roller 14 arranged at the front part of the seeding frame 13 and a pressure suppressing roller 15 arranged at the rear part.