JPH0454742Y2 - - Google Patents

Description

[Detailed description of the invention] Industrial application field This invention relates to a spreading device for a fertilizer spreader that uniformly spreads fertilizer or granular soil disinfectant over the surface of a field immediately before cultivation.

Conventional technology Conventionally, fertilizers and granular soil disinfectants have been uniformly spread over the entire field surface, and fertilizers that have been spread by tilling with a rotary tiller can be mixed uniformly over the entire field. As a spreading device for a spreader, there is one described in Japanese Utility Model Application Publication No. 62-53617. In the diffusion device of this fertilizer spreader, a conical diffusion plate is placed below the opening of a plurality of guide tubes that guide the fertilizer falling from the hopper, and a slit-shaped drop opening is formed at the bottom. The diffuser plate is covered with a covered cover.

Problems to be Solved by the Invention According to the spreading device for a fertilizer spreader described in Japanese Utility Model Application Publication No. 62-53617, the spreading plate disposed below the opening of the guide tube is conical. As the width dimension in the front-rear direction becomes larger, the width dimension in the front-rear direction of the cover surrounding the diffuser plate becomes larger. For this reason, especially for small tractors,
There is a risk that the cover may come into contact with the tilling rotary or the rear of the tractor when turning, etc.
It is difficult to use such a fertilizer spreader on a small tractor.

Means for Solving the Problem A tillage rotary is connected to the rear of a mobile agricultural machine, and a hopper for storing fertilizer, etc. is connected to a plurality of hoppers whose upper end is connected to the bottom of the hopper and whose lower end opens close to the ground. A fertilizer spreader having a guide tube is positioned between the mobile agricultural machine and the tilling rotary and connected to the mobile agricultural machine. A substantially semi-conical diffuser plate with a front half or a rear half cut out is provided below the opening of the guide tube, and is disposed in a downwardly diffusing state,
A cover is provided that surrounds the diffuser plate and has a long drop opening in the left and right direction orthogonal to the traveling direction of the mobile agricultural machine.

Function The substantially semi-conical diffuser plate with the front half or the rear half cut away has a small width in the front-rear direction, and the width dimension in the front-rear direction of the cover surrounding this diffuser plate also becomes small.

Embodiment An embodiment of this invention will be described based on the drawings. A tilling rotary 4 is connected to the rear of a tractor 1, which is a mobile agricultural machine, via a lower link 2, a lift arm 3, etc., and the tilling rotary 4 is provided so as to be freely raised and lowered by a hydraulic system (not shown) of the tractor 1. There is. Next, a fertilizer spreader 5 is disposed between the tractor 1 and the tillage rotary 4. This fertilizer spreader 5 is driven by the tractor 1.
The tractor has two hoppers 6 arranged in the left-right direction perpendicular to the traveling direction of the tractor 1, and the hoppers 6 are fixed to a support rod 7 erected at the rear of the tractor 1. Further, a case 9 housing a scraping rotary body (not shown) which is rotationally driven by a motor 8 is connected to the bottom of the hopper 6, and three guide tubes arranged in the left and right direction are connected to the bottom of the case 9. The upper ends of 10 are connected. The guide tubes 10 are divided into an upper guide tube 11 and a lower guide tube 12, and the upper end of the lower guide tube 12 is slidably fitted onto the lower end of the upper guide tube 11.

An opening 13 is formed at the lower end of the lower guide cylinder 12, and a cylinder 14 is fitted and fixed in the opening 13, and a bracket 15 is fitted in the cylinder 14.
is fixed. A substantially semi-conical diffuser plate 16 with the front half cut off and expanded downward is disposed below the opening 13, and this diffuser plate 16 has a cut surface with the front half cut off. is fixed in contact with the bracket 15.

Here, the bracket 15, the diffuser plate 16, etc. are provided for each guide cylinder 10, and a cover 17 that surrounds all of these brackets 15, diffuser plate 16, etc. and is formed in a box shape long in the left and right direction.
is fixed to the bracket 15 with bolts 18. A slit-shaped drop port 19 that is long in the left and right direction is formed on the bottom of the cover 17, and the bottom plate 20 of the cover 17, which is located before and after the drop port 19, is slanted toward the drop port 19. It is sloped downward.

Further, a pair of left and right support metal fittings 21 are fixed to the cover 17, and the lower link 2 is inserted into these support metal fittings 21.
It is tightened and fixed.

In such a configuration, the fertilizer and the like stored in the hopper 5 are evenly distributed to each guide cylinder 10 by the scraping rotor rotationally driven by the motor 8. The fertilizer etc. guided in the guide tube 10 fall onto the curved outer peripheral surface of the diffusion plate 16, and slide down while being spread on this outer peripheral surface. The fertilizer etc. spread on the outer peripheral surface of the diffusion plate 16 is covered with a cover 17.
This bottom plate 2 falls onto the bottom plate 20 of the
0 and is scattered from the droplet 19 onto the field surface. Here, the fertilizer etc. that has fallen from the opening 13 of the guide tube 10 is spread as it slides on the outer peripheral surface of the diffusion plate 16, so that the fertilizer etc. can be spread from the drop opening 19 to the field surface on the left and right sides of the drop opening 19. This is done substantially uniformly over the entire length dimension in the direction.
Then, the tilling rotary 4 located behind the fertilizer spreader 5 tills the field while stirring the spread fertilizer, etc., so that the fertilizer etc. is uniformly mixed in all layers of the entire field. In addition, when spraying and mixing granular soil disinfectants, use a rotary with a large number of claws to further improve mixing properties.

Next, the diffusion plate 1 disposed below the opening 13
6 is formed into a substantially semi-conical shape with the front half cut off, and the width in the front-rear direction is set small, so the width in the front-rear direction of the cover 17 that covers the diffuser plate 16 and the like is also set small. Therefore, even in a small tractor 1 where the distance between the rear part of the tractor 1 and the tilling rotary 4 is narrow, the cover 17 is prevented from coming into contact with the tilling rotary 4 or the rear part of the tractor 1.

Next, the cover 17, the lower guide tube 12, etc. are supported by the lower link 2, and the tilling rotary 4
The lower guide tube 12 slides relative to the upper guide tube 11 by moving up and down in conjunction with the rise and fall of the lower guide tube 11 . For this reason,
When the tractor 1 turns or travels in a non-working state, the cover 17 and the like rise together with the tilling rotary 4, preventing the cover 17 from interfering with the tilling rotary 4 or irregularities on the ground surface. Clogging of the drop opening 19 caused by the dirt digging into the ground is prevented. In addition, when the tractor 1 is running in a non-working state, the cover 17 rises to prevent interference with unevenness on the ground surface, so the cover 17 is moved closer to the ground during working. By arranging the cover 17 and the like and bringing the drop opening 19 sufficiently close to the ground, scattering of fertilizer etc. by wind can be prevented. Note that heavy parts such as the hopper 6 and the motor 8 are fixed to the support rod 7, which reduces the load on the hydraulic system and also prevents parts from coming into contact with each other due to the complicated vertical positional relationship when the hydraulic system is operating. be done.

Effects of the invention This invention connects the fertilizer spreader, which is located between the tilling rotary connected to the rear of the mobile agricultural machine and the mobile agricultural machine as described above, to the mobile agricultural machine, and controls the opening of the guide tube in the fertilizer spreader. By making the diffuser plate disposed below semi-conical and reducing the width in the front and back direction, the width in the front and rear direction of the cover that surrounds this diffuser plate can be reduced, and therefore, it is possible to reduce the width in the front and rear direction of the cover that surrounds this diffuser plate. Even if the fertilizer spreader is a small mobile agricultural machine with a narrow distance from the tillage rotary, it is possible to prevent the fertilizer spreader from interfering with the rear of the mobile agricultural machine or the tillage rotary. This has advantages such as easy installation.

[Brief explanation of drawings]

The drawing shows one embodiment of this invention.
The figure is a side view with a part cut away, Figure 2 is a side view with a part enlarged, Figure 3 is a back view with a part cut away, and Figure 4 is a part enlarged view. FIG. 1... Tractor (mobile agricultural machine), 4... Rotary tiller, 5... Fertilizer spreader, 6... Hopper, 10
... Guide cylinder, 13 ... Opening, 16 ... Diffusion plate, 1
7...Cover, 19...Drop opening.

Claims (1)

[Scope of utility model registration request] A fertilizer spreading system in which a tillage rotary is connected to the rear of a mobile agricultural machine, and has a hopper for storing fertilizer, etc., and a plurality of guide tubes whose upper end is connected to the bottom of the hopper and whose lower end opens close to the ground. A substantially semi-conical spreading machine is located between the mobile agricultural machine and the tilling rotary, is connected to the mobile agricultural machine, and is arranged in a downwardly expanding state and has a front half or a rear half cut off. A spreading fertilizer spreader characterized in that a plate is provided below the opening of the guide cylinder, and a cover is provided that surrounds the spreading plate and has a long drop opening in the left and right direction perpendicular to the direction of movement of the mobile agricultural machine. Device.