JPH0456562B2 - - Google Patents

Description

[Detailed description of the invention] [Industrial application field] The present invention relates to a field drilling device.

[Prior Art and Problems to be Solved by the Invention] Conventionally, in the field of rice fields, for example, due to the mechanization of agricultural work in recent years, various large agricultural machines such as tractors and combines have been driven into the fields. The rice field is compacted by the heavy weight of agricultural machinery, and this forms a hard soil section that extends to a depth of 20 to 30 cm from the field surface.Since the plowing depth with a tractor is approximately 10 to 15 cm, the cultivated soil layer is A layer of hard soil that cannot be tilled is formed at the bottom of the area.

The existence of this hard soil layer not only prevents the roots of paddy rice from growing deep, but also causes the irrigation and drainage functions to fail, even though the underdrain is buried approximately 1 m below the rice field surface. The planned and systematic moisture supply, capture, and excess water drainage, which are essential for the smooth growth of rice, are not possible, which deteriorates the soil and impedes the growth of paddy rice.

Therefore, in order to eliminate the negative effects caused by the presence of the hard soil layer, vertical holes with a depth of about 30 to 60 cm penetrating the hard soil layer were drilled into the rice field over almost the entire area of the rice field, matching the arrangement of the plants as much as possible. Focusing on the fact that these vertical holes can improve the irrigation and drainage functions, it is possible to automatically drill such vertical holes in a scattered manner as the tractor travels. We are guiding the field drilling equipment.

[Means for Solving the Problems] The present invention aims at these improvements, and its gist is that the machine frame 3 is connected to the tractor 1 by the coupling mechanism 2.
are connected so as to be able to rise and fall freely, grooves 17 extending vertically are provided on both left and right sides of the machine frame 3 in the traveling direction, and lifting rollers 16 that can be engaged with each groove 17 are provided on the two left and right lifting frames 15. Each elevator frame 15 is provided so as to be movable up and down, and cranks 31 which can be rotated by the power take-off shaft 25 of the tractor 1 are provided at the left front and rear and right front and back positions of the machine frame 3, respectively, and each elevator frame 15 is provided with a crank 31 that can be rotated by the power take-off shaft 25 of the tractor 1. An extending horizontal guide elongated hole 33 is formed, a guide roller 32 is provided at the tip of each crank 31, and the left front and rear guide rollers 32 are engaged with the horizontal guide elongated hole 33 of the left elevating frame 15, and the right elevating frame The right front and rear guide rollers 32 are engaged with the horizontal guide elongated holes 33 of 15, and each elevating frame 15 penetrates into the field soil when descending, captures and lifts muddy soil when rising, and creates a vertical hole a in the field. A perforating body 5 capable of perforating a hole is provided so as to be movable back and forth, a return spring is provided for returning the perforating body to a forward position, a fertilizer tank 6 is provided on the tractor 1 or the machine frame 3, etc., and a fertilizer tank 6 is provided in the fertilizer tank 6. This field perforation device is characterized in that it is configured by disposing a discharge mechanism 7 for discharging fertilizer from the lower end of a perforation body 5.

[Example] The connection mechanism 2 of this example is a normal three-point link mechanism, and includes lower links 9 on both left and right sides, upper links 10, swing links 11 on both left and right sides, and lifting links 12 on both left and right sides. The tip of the upper link 10 is connected to the machine frame 3 by the upper connecting pin 13, and the tips of the lower links 9 on both left and right sides are connected to the machine frame 3 by the lower connecting pin 14, and the machine frame 3 is connected to the machine frame 3 by the lower link pin 14. It is designed to be supported and connected at points so that it can be raised and lowered.

In addition, the perforation mechanism 4 of this embodiment has the vertical rods 3a on both the left and right sides of the machine frame 3 made of grooved steel, and the lifting frame 15
A lifting roller 16 is attached to the front end of the lifting frame 15, and the lifting roller 16 is attached to the vertical rod 3.
a, the elevating frame 15 can be raised and lowered freely, and the rotating shafts 18 and 19 are connected to the bearings 20 at the front and rear of the machine frame 3.
A bevel gear 21 is fixed in the middle of the rotating shaft 18 on the front side, and an intermediate shaft 22 is installed in the middle of the machine frame 3.
is horizontally supported by a bearing 23, and the main bevel gear 24 and the subordinate bevel gear 21 of this intermediate shaft 22 are meshed, and this intermediate shaft 22
and the power take-off shaft 25 of the tractor 1 are connected by a universal joint 27 having a telescopic portion 26, and sprockets 28, 29 are fixed to the front and rear rotating shafts 18, 19,
A chain 30 is wound between the sprockets 28 and 29, and the base of the crank 31 is fixed to both ends of the rotating shafts 18 and 19. A guide roller 32 is attached to the tip of the crank 31, and a horizontal guide elongated hole 33 is formed in the elevating frame 15.
3 and a guide roller 32 is slidably connected to the guide roller 32.

Further, in this embodiment, a cross-sectional guide frame 34 is formed on the lift frame 15, and a movable frame 35 having a substantially ∪-shaped cross section is moved back and forth in the guide frame 34 by sliding engagement between grooves 36 on both sides and movable rollers 37. A stopper rubber 38 is attached to the front part of the guide frame 34, and a return spring 39 is attached to the front part of the guide frame 34 and the moving frame 35.
is stretched, and the perforated body 5 is vertically disposed on this movable frame 35.

Further, the perforation body 5 of this embodiment is formed with a concave cross-section, has a cylindrical perforation piece 40 at the lower end, and has a reinforcing rib 41 on the front surface, so that when the perforation body 5 is pulled out from the soil after being perforated in the soil. The drilling body 5 captures and lifts the soil corresponding to the hole to be drilled, and as a result, the hole is drilled into the soil.

Further, in this embodiment, the fertilizer tank 6 is disposed in the upper part of the machine frame 3, and the discharge mechanism 7 is attached to the lower part of the machine frame 3.

This discharge mechanism 7 includes an operating section 42 and a plunger 4.
3, a return spring 44, and the fertilizer tank 6
and the perforated body 5 are connected to the discharge pipe 8 via the discharge mechanism 7.
A pressing piece 45 is formed on the lifting frame 18, and the plunger 43 of the actuating part 42 of the discharge mechanism 7 is pressed down by the pressing piece 45 at the lowering limit of the lifting frame 15, so that the fertilizer is transferred to the discharge pipe. It is designed to discharge from 8.

In addition, the arrangement pitch of the perforated body 5, that is, the vertical hole a
It is desirable to match the pitch of the holes to the distance between the plants as much as possible, for example, approximately 25 to 30 cm, the depth of the holes to be 30 to 60 cm, and the diameter of the holes to be approximately 30 mm.

Since this embodiment has the above configuration, when the power take-off shaft 25 of the tractor 1 is rotated, the intermediate shaft 22 is rotated via the universal joint 27, and thus the front and rear rotating shafts 18, 19 are also rotated. by crank 3
1 rotates, and the elevating frame 15 moves up and down due to the sliding engagement between the guide roller 32 of the crank 31 and the horizontal guide elongated hole 33 of the elevating frame 15, and the sliding engagement between the groove 17 and the elevating roller 16. As a result, the two perforators 5 alternately penetrate into the soil, and the perforators 5 are provided so as to be movable back and forth on the elevating frame 15, which is guided in vertical movement by the grooves 17 and the elevating rollers 16. Therefore, the vertical drilling operation of the punching body 5 can be made smooth and reliable, and the lifting frame 15 can be moved up and down by the engagement between the guide roller 32 of the crank 31 and the horizontal guide elongated hole 33 of the lifting frame 15. Because it moves, it can have a simple configuration, and the perforated body 5 can be moved when lowering.
The drilling body 5 penetrates into the field soil, and when rising, the drilling body 5 captures and lifts the mud, and by this drilling/extraction operation, a vertical hole a is bored in the field.

When the tractor 1 moves forward in this state, drilling work is performed on the field surface. At this time, if the drilling body 5 has penetrated into the soil, even if the tractor 1 moves forward, the drilling body 5 will not be able to penetrate into the soil. Since the stopped state must be maintained, at this time, the moving roller 37 slides the movable frame 35 relatively backward, so that the perforating body 5 can be stopped at the perforating position, and the perforating body 5 is submerged in the soil. When it comes out, it slides back to the original front position by the return spring 39, and this process is repeated to ensure smooth drilling.Therefore, just by driving the tractor 1 forward, the plow can be drilled into the paddy field in a scattered state. Vertical holes a can be drilled over the entire area.

Furthermore, the perforated body 5 is bored into the soil, and at the lowered position, the pressing piece 45 presses the plunger 43 of the operating section 42, whereby the fertilizer in the fertilizer tank 6 is released from the lower end of the perforated body 5. This allows for deep fertilization.

Incidentally, as the fertilizer, powdered fertilizer or liquid fertilizer is used.

In addition, if the discharge mechanism 7 is a weight drop type, it can be a simple on-off valve type, or it can be a type that extracts fertilizer at a predetermined pressure using a cylinder.

[Effects of the Invention] As described above, when the power take-off shaft 25 of the tractor 1 is rotated while the tractor 1 is running, the crank 31 rotates, and the guide roller 32 of the crank 31 and the horizontal guide of the elevator frame 15 are rotated. Long hole 33
sliding engagement with the concave groove 17 and the lifting roller 16
The lifting frame 15 moves up and down by sliding engagement with the lift frame 15, whereby the perforating body 5 penetrates into the soil, and the perforating body 5 is guided in vertical movement by the groove 17 and the lifting roller 16. Since it is provided in the lifting frame 15 so as to be movable back and forth, the vertical drilling operation of the punching body 5 can be made smooth and reliable. A simple configuration can be achieved because the lifting frame 15 can be moved up and down by coupling with the frame 15. When descending, the perforating body 5 penetrates into the field soil, and when rising, the perforating body 5 captures and lifts the muddy soil. A vertical hole a can be drilled in the field by the detachment operation, and since the punching body 5 is movable back and forth, the punching body 5 can be stopped at the drilling position even if the punching body 5 has penetrated into the soil.
When it comes out of the soil, it is slid back to the original front position by the return spring 39, and this is repeated to perform smooth drilling, and the discharge mechanism 7 causes the discharge mechanism 7 to slide into the vertical hole a or Fertilizer can be discharged from the discharge mechanism 7 nearby, and therefore the effect of fertilizing deep in the field soil can be exerted, and the presence of the vertical hole a also improves water flow and ventilation to the deep part. As a result, a better fertilization effect can be expected and the field soil can be improved, which in turn improves the ability of roots to spread deep down, which in turn improves crop growth and can be expected to increase yields.

The above intended objectives can be fully achieved.

[Brief explanation of drawings]

The drawings show one embodiment of the present invention; FIG. 1 is an overall side view, FIG. 2 is a plan view, and FIG. 3 is a rear view. DESCRIPTION OF SYMBOLS 1... Tractor, 2... Connection mechanism, 3... Machine frame, 5... Perforated body, 6... Fertilizer tank, 7... Discharge mechanism, 15... Lifting frame, 25... Power take-off shaft,
16... Lifting roller, 17... Concave groove, 32... Guide roller, 33... Horizontal guide roller, 39...
...Returning spring.

Claims (1)

[Claims] 1. A machine frame is connected to a tractor so that it can be raised and lowered by a coupling mechanism, grooves extending vertically are provided on both left and right sides of the machine frame in the direction of movement, and lifting rollers that can be engaged with the respective grooves are mounted on the left and right sides. A horizontal guide is provided on the frame so that each lifting frame can be moved up and down, cranks are provided at front and back positions on the left side and front and back on the right side of the machine frame, respectively, and can be rotated by the power take-off shaft of the tractor. A long hole is formed, and a guide roller is provided at the tip of each crank, and the left front and rear guide rollers are engaged with the horizontal guide long hole of the left lifting frame, and the right front and rear guide rollers are engaged with the horizontal guide long hole of the right lifting frame. A perforating body that engages with a guide roller, penetrates into the field soil when descending, captures and lifts mud when ascending, and can freely move back and forth to perforate a vertical hole in the field is provided in each elevating frame, and the perforation body A return spring is provided to return the body to the forward position, a fertilizer tank is provided on the tractor or machine frame, and a discharge mechanism is provided to discharge the fertilizer in the fertilizer tank from the lower end of the perforated body. A field drilling device characterized by: