JP4742788B2 - Sprayer for work vehicles - Google Patents

Description

  TECHNICAL FIELD The present invention relates to a spray device for a work vehicle that sprays granular or powdery fertilizers and chemicals along a crop line that is cultivated by raising straw, and belongs to the technical field of agricultural machinery.

Patent Document 1 discloses a device for spreading fertilizer between left and right disks (partition plates), and shows a configuration in which a tilling claw is interposed between the left and right disks.
JP 2005-6550 A

  Conventionally, as a technique for stirring fertilizer together with soil, since stirring is performed by interposing a tilling nail between the left and right disks, there is a problem that the configuration becomes complicated and cannot be implemented at low cost.

  In the present invention, instead of the tilling claws, the left and right partition disks (disks) are devised to provide a stirring function, and the above problems are not solved.

In order to solve the above problems, the present invention has taken the following technical means.
The present invention according to claim 1 includes a rotary tiller (10) for plowing soil in a field, a pair of partition disks (24) installed opposite to the rotary shaft (11) of the rotary tiller, and a fertilizer Fertilizer tank (21) for storing the fertilizer, spray nozzle (23) for spraying the fertilizer in the fertilizer tank (21) between the left and right partition disks (24, 24), and cocoon molding for vertical shaping of the soil after cultivation The left and right partition disks (24, 24) comprise a combination of a plurality of fins (32, 32 ), and each fin (32, 32) of the left and right partition disks (24, 24) is provided with a plate (18). It is configured to be inclined toward each other, and a predetermined gap (33) capable of introducing soil is secured between left and right partition disks (24, 24) between adjacent fins.

  Since the left and right partition disks (24, 24) are composed of several fins (32, 32...), The stirring function is more effectively performed. Since a predetermined gap (33) is secured between the fins (32, 32...), The soil outside the partition disk (24, 24) can easily enter from the gap, so that the space between the left and right partition disks can be reduced. You can eliminate soil shortages.

According to the first aspect of the present invention, since the left and right partition disks are composed of the plurality of fins (32, 32...), The fertilizer can be stirred more effectively. In addition, since a predetermined gap (33) is secured between the fins, soil outside the partition disk can easily enter from the gap, and the problem of soil shortage between the left and right partition disks can be solved. Can do.

An embodiment of the present invention will be described with reference to the drawings.
FIG. 1 shows a tractor as an example of a work vehicle. An engine E is mounted in a bonnet 2 at the front of the vehicle body 1, and the rotational power of the engine E is transmitted to a transmission in a mission case 3. The rotational power decelerated by the transmission is transmitted to the front wheels 4 and the rear wheels 5. A steering handle 7 is provided near the operation box 6, and a driver's seat 8 is installed behind the steering handle 7.

A rotary cultivating section (rotary cultivating device) 10 for cultivating soil in the field is mounted at the rear of the vehicle body so as to be movable up and down with respect to the vehicle body 1.
A rotary shaft 11 is rotatably mounted on the rotary tiller 10, and a number of tilling claws 12 project radially from the outer periphery of the rotary shaft. Rotational power to the rotary tiller 10 is transmitted from the PTO shaft of the tractor to the rotary shaft 11 via the power transmission case 13 and the transmission system in the chain case 14, and the rotary pawl 11 is rotated in a predetermined direction so that the tilling claws 12 are rotated. It is designed to plow the soil in the field.

Behind the rotary tiller 10, a straw forming plate 18 for standing and forming the soil after tillage is detachably attached to a support frame 20 protruding from a rotary frame 19 of the tiller.
In addition, a fertilizer tank 21 for storing fertilizer (or medicine) is installed above the rotary tiller 10, and a feeding portion driven by a motor is provided below the fertilizer tank 21, and connected to the feeding portion. A spray nozzle 23 is provided at the lower end of the fertilizer hose 22.

  On the other hand, the rotary shaft 11 is provided with a pair of right and left discs 24 that are opposed to each other at a predetermined interval, and is fixed so as to rotate integrally with the rotary shaft 11. The partition disks 24, 24 are provided with stirring claws 25, 25,.

  The spray nozzle 23 of the fertilizer hose 22 faces between the left and right partition disks 24, 24, and the fertilizer fed from the fertilizer tank 21 falls in the fertilizer hose 22, and between the partition disks 24, 24 from the spray nozzle 23. It comes to be led in. Then, the fertilizer discharged from the spray nozzle 23 is sprayed in a strip shape on the farm scene as the machine moves forward. Further, the fertilizer introduced between the left and right partition disks 24 and 24 is stirred with the soil by the stirring claws 25 protruding from the partition disk 24.

  The interval adjustment of the partition disks 24, 24 is performed by moving the attachment position with respect to the rotary shaft 11 in the axial direction, and can be performed by the adjustment holes 30 and the adjustment pins 31 drilled at predetermined intervals on the rotary shaft, The configuration is such that it can be appropriately adjusted according to conditions such as the type of crop and the size of the crop.

  Next, the structural example of the partition disk of 2nd Example is demonstrated. As shown in FIG. 4, the partition disk 24 of this example is formed by appropriately combining several fins 32, 32..., Ensuring a predetermined gap 33 between the fins, and the fins facing each other. It is configured to incline toward the side to enable the introduction of crushed soil. As a result, the outer soil can easily enter from the gap 33 between the fins 32, and coupled with the effect of bringing the soil inward, the problem of soil shortage between the partition disks can be solved.

As shown in FIGS. 6 and 7, the stirring effect can be further enhanced by providing the stirring claws 25 in a projecting manner on the fins 32, 32.
Further, the partition disk 24 shown in FIG. 8 is supported by the rotary shaft 11 via a ball bearing 34 so as to be able to rotate and rotate separately from the forced rotation of the tilling claws 12. In other words, the partition disk is rotated by being grounded to the ground, so that the drive rotation and the embedding property are slightly inferior, but the clogging between the partition disks can be reduced while maintaining the effect. When the partition disk and the tilling claw rotate at the same time, clogging between the partition disks tends to occur when working on wet soil, but this problem can be solved.

  As shown in FIG. 9 (a), in the bandage fertilization configuration for small wrinkles, there is no shift in the center of the fertilization position. However, in wide flat ridges as shown in FIG. Occurs. For this reason, in this example, as shown in FIG. 10, a center displacement is prevented by providing a displacement prevention plate 38 at the rear part of the partition disks 24, 24.

  Moreover, in the Example shown in FIG. 11, it is set as the structure which provides several pairs of partition disks with respect to a pair of ridge forming board as a countermeasure against a wide flat ridge. For example, flat onion four-row transplant is generally used for onions, but this is not possible with a pair of one-partition discs, but can be handled by using a plurality of pairs of one-partition discs as shown in FIG. .

Side view of tractor Rear view of the main part The perspective view of the partition disk of 1st Example Rear view of the partition disk of the second embodiment Side view of the same partition disk The side view which shows the example which changed the fin shape with the partition disk of FIG. Same as above Sectional view showing the bearing device of the partition disk Plan view of main parts of rotary tillage section Top view of the main part Principal plan view of the same cultivation section

DESCRIPTION OF SYMBOLS 10 Rotary tillage part 11 Rotary axis | shaft 12 Tillage nail 18 Kashiwa shaping board 21 Fertilization tank 22 Fertilization hose 23 Spray nozzle 24 Partition disk 25 Stirring nail 32 Fin 33 Gap

Claims (1)

A rotary tiller (10) for plowing the soil in the field, a pair of partition disks (24) installed opposite to the rotary shaft (11) of the rotary tiller, and a fertilizer tank (21) containing fertilizer A spray nozzle (23) for spraying the fertilizer in the fertilizer tank (21) between the left and right partition disks (24, 24), and a ridge forming plate (18) for standing and forming the soil after cultivation, The partition disk (24, 24) is composed of a combination of a plurality of fins (32, 32), and the fins (32, 32) of the left and right partition disks (24, 24) are inclined toward each other. And a predetermined gap (33) capable of introducing soil between the left and right partition disks (24, 24 ) is secured between adjacent fins.

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