JPH0140460Y2 - - Google Patents

Description

[Detailed Description of the Invention] Industrial Application Field The present invention relates to a soil disinfection machine for spraying a chemical solution into the soil of a field.

BACKGROUND OF THE INVENTION In fields, various pest control operations are performed to protect crops from diseases, pests, and the like. Among these control operations, there is operation for controlling harmful microorganisms, and soil disinfection machines are used for such operations. Therefore, an example of such a soil disinfection machine will be explained based on FIG. 3.

A tractor 1 is provided, and a chemical liquid tank 2 containing a chemical liquid (not shown) and a discharge device 3 connected to the chemical liquid tank 2 are fixed to the front part of the tractor 1. On the other hand, at the rear of the tractor 1,
A rotary tiller 5 connected to and driven by the PTO shaft 4 of the tractor 1 is connected by a three-point hitch 6. A connecting frame 7 is provided which extends rearward from the rotary tilling section 5 and is fixed to the three-point hitch 6, and a chain pressure device 8 is attached to the terminal end of the connecting frame 7. The chain pressure device 8 is attached to the connection frame 7 so as to be rotatable in the left and right directions with respect to the traveling direction of the tractor 1. Further, a plurality of injection blades 10 are fixed to the intermediate portion of the connection frame 7 between the tractor 1 and the pressure chain 8 via connection rods 9 so as to face downward. These injection blades 10
are placed in a position where their tips can penetrate into the ground. And, these injection blades 10,
A conduit 11 extending from the discharge device 3 is connected.

In this configuration, the soil is tilled by the rotary tiller 5, the chemical solution is injected into the tilled soil from the injection blade 10, and the injected part is further chained by the locking pressure device 8. It is something that puts pressure on you. Here, in order to inject the chemical into the ground, the chemical that flows from the chemical tank 2 to the discharge device 3 is discharged by the discharge device 3, reaches each injection blade 10 through the conduit 11, and passes through the inside of the injection blade 10. This is done by discharging it from the tip. At this point, the chemical solution is sprayed into the soil in the field.

Problems to be Solved by the Invention However, when there are irregularities in the field, the penetration depth of the injection blade 10 into the ground often changes. This is because the left and right movement of the tractor 1 in the traveling direction coincides with the movement of the injection blade 10 in that direction. For example, when the tractor 1 is held vertically, if there are irregularities in the soil around the injection blade 10, the penetration depth of the injection blade 10 will change between the concave portion and the convex portion. Furthermore, if the tractor 1 is tilted in the left-right direction due to irregularities in the field, the penetration depth of the injection blade 10 will change even when the soil around the injection blade 10 is flat. Therefore, there is a drawback that the injection depth of the chemical solution is not constant and a uniform disinfection effect cannot be obtained.

The present invention was devised in view of these points, and an object of the present invention is to provide a soil disinfection machine that can provide a uniform disinfection effect without being affected by the unevenness of the soil.

Means for Solving the Problems The present invention provides a connecting frame that extends to the rear of a mobile agricultural machine, and a chain pressure device that is attached to the connecting frame so as to be rotatable in the left and right directions with respect to the direction of movement. A plurality of injection blades were installed to be positioned in front of the pressure device in the direction of movement and to discharge a chemical solution to the chain pressure device.

Function: As the mobile agricultural machine advances, each injection blade injects the chemical solution into the soil, and the confinement pressure device applies confinement pressure to the relevant soil area.

At this time, even if the soil is uneven, the chain pressure device tilts left and right in the direction of travel according to the unevenness, and its entire surface comes into contact with the soil. Therefore, the injection blade is also tilted together with the chain pressure device to adapt to the unevenness of the soil. Here, the penetration depth of the injection blade into the soil is always constant,
Uniform disinfection effect is given to any soil.

Embodiment of the invention An embodiment of the invention will be described based on FIGS. 1 and 2. A tractor 20 is provided, and a chemical liquid tank 21 (not shown) storing a chemical liquid and a discharge device 22 connected to the chemical liquid tank 21 are fixed to the front part of the tractor 20. At the rear of the tractor 20, there is a PTO shaft 2 of the tractor 20.
A rotary tiller 24 connected to and driven by a three-point hitch 25 is connected to the three-point hitch 25. and,
A connection frame 26 is provided that extends rearward from the rotary tiller 24 and is fixed to the three-point hitch 25. This connection frame 26 is made up of two rod-shaped members.

A chain pressure device 27 is attached to the terminal end of the connection frame 26. This chain pressure device 27
is attached to the connection frame 26 so as to be rotatable in the left and right directions with respect to the traveling direction of the tractor 20. That is, a pressure chain bracket 28 is attached to the connection frame 26 so as to be slidable in the axial direction thereof, and is fixed with bolts 29. A chain pressure ring frame 31 that rotatably holds a cylindrical chain pressure ring 30 is provided, and its upper center portion is rotatably fixed to the chain pressure bracket 28 by a connecting pin 32. Here, the rotation direction is a direction perpendicular to the axial direction of the connection frame 26, and the chain pressure ring frame 31 is held so that this direction coincides with the axial direction of the chain pressure ring 30. ing.

On the other hand, a plurality of injection blades 33 are fixed to the chain pressure ring frame 31. That is, the chain pressure ring frame 31 has the chain pressure ring 3 at the front in the traveling direction.
A rod-shaped injection blade frame 34 is fixed in the same direction as the axial direction of the cylinder. This injection blade frame 34
A plurality of injection blade brackets 35 are attached to the injection blade bracket 35 so as to be slidable in the axial direction thereof, and are fixed by left and right adjustment bolts 36. The injection blade 33 is attached to each of the injection blade brackets 35 so as to be movable up and down, and is fixed by a vertical adjustment bolt 37.

A switch box 38 is attached to one end of the injection blade frame 34, and a switch lever 39 having a shape similar to the injection blade 33 extends downward from the switch box 38. This switch lever 39 is pinned so as to be rotatable in the same direction as the traveling direction of the tractor 20, and is normally pressed in the traveling direction of the tractor 20 by a spring (not shown).
Here, the wiring is such that power is supplied to the discharge device 22 from a battery (not shown) by rotating the switch lever 39.

Therefore, the discharge device 22 and the injection blade 33
A conduit 40 for conveying a chemical solution is installed between the two. And those injection blades 33,
There is a built-in mechanism (not shown) for discharging an appropriate amount of chemical liquid from each tip.

In such a configuration, as the tractor 20 moves forward, the rotary tiller 24 tills the soil, the injection blade 33 injects the chemical solution into the tilled soil, and the chain pressure device 27 further injects the injection portion into the soil. Apply chain pressure. Here, soil tilling work, chemical solution spraying work, and confinement work are performed at the same time.

Here, the chemical spraying work will be explained. First, the injection blade 33 is positioned in order to set the injection interval and injection depth of the chemical solution into the soil.
By moving the injection blade bracket 35 in the left-right direction and tightening the left-right adjusting bolt 36, the chemical solution injection interval is set. On the other hand, by moving the injection blade 33 in the vertical direction and tightening the vertical adjustment bolt 37, the liquid injection depth is set. Next, switch lever 39
When it comes into contact with the ground, it rotates in the direction opposite to the direction in which the tractor 20 is moving. As a result, power is supplied to the discharging device 22, and the chemical solution flowing out from the chemical tank 21 to the discharging device 22 is conveyed to the injection blade 33 through the conduit 40. Then, the chemical solution is discharged from the tip of the injection blade 33 set at an arbitrary position and is injected into the soil.
Here, the chemical liquid is sprayed with an appropriate width and depth.

Therefore, the injection depth of the chemical liquid is always constant throughout the chemical liquid spraying operation. This is because each injection blade 33 operates in unison with the chain pressure device 27.
That is, since the chain pressure device 27 is rotatable in the left and right directions in the traveling direction of the tractor 20, even if the soil surface is uneven, it tilts left and right in the traveling direction according to the irregularities. Therefore, the entire axial direction of the chain pressure ring 30 comes into contact with the soil surface. Here,
The injection blade 33 integrated with the chain pressure device 27 also
The depth of penetration into the soil remains constant by adapting to the unevenness of the soil surface. Therefore, the injection depth of the chemical solution discharged from the injection blade 33 is always constant, and the disinfecting effect is uniform. In this way, ideal chemical liquid spraying is performed.

On the other hand, the confining pressure device 27 has the primary role of confining the soil that is too swollen and further crushing soil clods, and also has the role of compressing the soil after the chemical solution has been injected to enhance the disinfecting effect of the chemical solution. It is also effective.

Effects of the invention In this invention, the injection blade is fixed to the chain pressure device that rotates left and right with respect to the direction of movement of the mobile agricultural machine, so it can provide a uniform disinfection effect even on uneven soil. Therefore, it is possible to perform ideal chemical spraying, and since the injection blade is directly fixed to the chain pressure device, the number of parts is reduced, and the structure is therefore simplified, reducing manufacturing costs. It has the effect of

[Brief explanation of the drawing]

FIG. 1 is a perspective view of an injection blade fixing portion showing an embodiment of the present invention, FIG. 2 is a side view of the entire device, and FIG. 3 is a side view of the entire device showing an example of the conventional device. 20... Tractor (mobile agricultural machine), 26... Connection frame, 27... Chain pressure device, 33... Injection blade.

Claims (1)

[Scope of utility model registration request] A connecting frame extending to the rear of the mobile agricultural machine is provided, and a locking pressure device is provided on the connecting frame so as to be rotatable in the left and right directions with respect to the traveling direction, and the locking pressure device is positioned in front of the locking pressure device in the traveling direction. A soil disinfection machine characterized by being equipped with multiple injection blades for discharging a chemical solution.