JPH0323041Y2 - - Google Patents

Description

[Detailed Description of the Invention] The present invention relates to a device for adjusting the insertion depth of a fumarole pipe into the soil in a pneumatic soil improvement machine that improves the soil by drilling holes in a field and sending high-pressure air into the soil.

This type of pneumatic soil improvement machine consists of an engine, a compressor driven by the engine, an air tank that stores air pressurized by the compressor, and an air tank that communicates with the inside of the air tank via an operating valve. A fumarole pipe is provided to hang down from the bottom of the fumarole pipe, and with the distal end side of the fumarole pipe inserted into the soil, the operation valve is opened to release high-pressure air in the air tank to the distal end of the fumarole pipe. It is known that the air is ejected into the soil through holes, which not only supplies high-pressure air (oxygen) into the soil, but also creates cracks in the soil to improve the physical properties of the soil. It has a positive effect on crops, especially the roots, and is intended to improve the quality and yield of crops.

By the way, in order to make the effect of the above-mentioned soil improvement machine more effective, it is desirable that the insertion depth of the fumarole pipe from the ground surface into the soil is adjusted depending on soil conditions, crops, climate, etc. The soil improver did not have a depth adjustment device, and it was difficult to adjust the depth, especially when the soil improver was held and operated by hand. In addition, a hole for inserting a fumarole pipe remains in the field after work with a soil conditioner, so
By injecting soil conditioners, fertilizers, agricultural chemicals, etc., the soil improvement effect will be further enhanced. These soil conditioners, fertilizers, agricultural chemicals, etc. can be in liquid, powder, or granular form, but powder and granular forms in particular cannot be easily and reliably injected through an opening. desirable.

The present invention was developed in consideration of the above circumstances, and it is possible to easily and easily adjust the insertion depth of the fumarole pipe of the soil conditioner into the soil, and the opening of the hole made by the fumarole pipe is shaped like a funnel. An object of the present invention is to provide a device for adjusting the depth of insertion of a fumarole pipe into the soil in a pneumatic soil conditioner, which is formed into a shape to allow easy and reliable injection of soil conditioners, fertilizers, agricultural chemicals, etc.

For this purpose, the present invention makes it possible to move and fix the soil insertion depth adjusting plate installed in the fumarole pipe up and down with respect to the outer circumference of the fumarole pipe, and to turn it upside down, The hole formed by inserting the hole into the soil has a convex portion that has a funnel-shaped opening.

Hereinafter, the present invention will be explained with reference to the illustrated embodiments.

In FIGS. 1 to 3, reference numeral A indicates the body of the pneumatic soil improvement machine, B indicates an automatic driving mechanism, and C indicates a device for adjusting the depth of insertion of the fumarole pipe into the soil.

An engine 1 is mounted on the upper part of the aircraft A, and this engine 1 includes a starter 101 and a fuel tank 1.
02, carburetor 103, reducer 104, muffler 11
1 etc. are provided. A pulley 105 is attached to an output shaft protruding horizontally from the reducer 104, and between this pulley 105 and a pulley 107 attached to the protruding end of a shaft 112 supported by a cylinder 120 at the bottom of the fuselage A, V-belt 10
6 is wound. This V-belt 106 has
A tension pulley 108 supported by a tension arm 109 is provided, and these belt transmission systems are covered with a cover 110. A bevel gear 113 is attached to the inner end of the shaft 112, and a bevel gear 114 meshes with the bevel gear 113.
However, the rotating shaft 121 supported by the bearing 115
installed on. At the shaft end of the rotating shaft 121,
Camshaft 116 eccentric from its axis by △
is attached, and a cam ring 118 is provided on the outer periphery of this camshaft 116 via a bearing 117. A receiving body 122 that is in sliding contact with the cam ring 118 is fixed to the upper end of an outer pipe (fuglow pipe) 304, which will be described later, to constitute an automatic driving mechanism B.

A compressor 2 is provided on the side of the engine 1, and this compressor 2 includes a cylinder 201, a cylinder head 202, a safety valve 203, and an air cleaner 20.
4, a discharge port 205, a pipe 206, a pressure gauge 207, etc. are provided, and the pipe 206 is communicated with the air tank 3.

The air tank 3 stores compressed air sent from the pipe 206 of the compressor 2 at a high pressure, and is connected to the compressor 2 so that the pressure of the compressed air does not automatically exceed a predetermined pressure. A pair of left and right handles 301 are attached to the outside of the air tank 3, which the operator holds with both hands when carrying the soil improvement machine to a work site and performing the work. Further, at the bottom of the air tank 3, compressed air in the tank is transferred from an inner pipe 303 to an outer pipe (fumarole pipe) 304.
An operation valve 302 that performs the operation of supplying and shutting off the
is provided. The inner pipe 303 is a stroke cylinder 30 attached to the lower part of the air tank 3.
5, and an outer pipe (blower pipe) 304 is supported to extend vertically downward within the stroke cylinder 3.
05 so that it can slide on the outer periphery of the inner pipe 303, and is attached to the stroke cylinder 30 through the buffer body 119.
5, the proximal end of which is supported by the inner pipe 303, and its distal end is suspended outside the stroke cylinder 305 for a much longer time than the inner pipe 303, and its distal end is pointed. A fumarole hole 309a is provided.

A base of a foot pedal 308 is pivotally supported on the operation valve 302 so as to be able to move up and down, and a valve lever 307 that is connected to the operation valve 302 to open and close the valve 302 is connected to the foot pedal 308. and stroke cylinder 305
The foot pedal 308 is normally held slightly upward from the horizontal position by a spring 306 installed between the foot pedal 306 and the lower end. At this time, the operating valve 302 is closed. When the foot pedal 307 is depressed downward, the operating valve 302 opens and the compressed air in the air tank 3 flows into the inner pipe 303 and the outer pipe (fumarole pipe) 3.
04 and is ejected from the fumarole hole 309a. Although not shown, the handle 301 is provided with an operating lever that is connected to the tension arm 109 and the throttle of the engine 1.

On the other hand, as shown in FIGS. 4 to 10, an adjustment device C is provided on the outer periphery of the outer pipe 304, which is a fumarole pipe, for regulating the insertion depth of the outer pipe (fumarole pipe) 304 into the soil. As shown in FIG. 4, this adjustment device C consists of a pair of depth adjustment plates 4, 4, which are divided into two on both sides of an outer pipe (fumarole pipe) 304, and are screwed into mutually provided screw holes 401. At 402, it is tightened via a washer 403 to fix it at an arbitrary position on the outer periphery of the outer pipe (blower pipe) 304. Further, one of the upper and lower sides of the depth adjusting plates 4, 4 forms a semicircular flat plate 404, and the other upper and lower sides form a semiconical convex portion 405. 4
When the screws 402 are tightened, the flat plates 404, 4
04 is a circular plane plate, and the convex portions 405 and 405 are conical convex portions. The depth adjusting plates 4, 4 can be fixed at any position in the longitudinal direction of the outer pipe (fumarole pipe) 304 by tightening or loosening the screws 402, and as shown in FIG. The flat plate 404 is on top and the convex part 405 is on the bottom, or as shown in FIG. 6, the convex part 405 is on top and the flat plate 404 is on the bottom. Furthermore, the inclination angle α of the convex portion 405 is
(See Fig. 5) is that the funnel-shaped opening slope formed in the field by the convex parts 405, 405 is formed with the outer pipe (fumarole pipe) 304 to carry, for example, granular soil conditioner, fertilizer, agricultural chemicals, etc. When thrown into hole 5, the angle is such that it exceeds the angle of repose (for example, 37 degrees or more) and naturally falls into the hole. Note that the screw hole 401 is formed in a convex portion 405.

Next, the operation of the pneumatic soil conditioner of this embodiment will be explained.

When the engine 1 is running, the handle 301
The worker holds the outer pipe (fumarole pipe) 304.
stand upright on the soil in the working position. When the operating lever (not shown) is squeezed, the accelerator of the engine 1 is pulled and at the same time the tension arm 10
9 is pulled, the belt 106 is tensed by the tension pulley 108, and the pulley 107 and shaft 11
2 rotates, and the rotating shaft 121 rotates via the bevel gears 113 and 114, so that the camshaft 11
6 is rotated eccentrically by Δ with respect to the rotating shaft 121, and the cam ring 118 rotates including a reciprocating motion component. When the operator lifts the aircraft A and the tip part does not touch the ground, the outer pipe (fumarole pipe) 304 cannot move up and down without being struck because there is a gap between the cam ring 118 and the receiver 122, and the outer pipe (fumarole pipe) When the tip of the tube) 304 touches the ground, the receiver 122 is pushed up, the cam ring 118 hits the receiver 122, and the outer pipe (fumarole pipe) 304 slides on the inner pipe 303 and moves up and down, ) 304 acts on the entire weight of the machine A, so the driving force becomes large,
It can be inserted easily even in hard soil.

When the depth adjustment plate 4 of the soil insertion depth adjustment device C comes into contact with the top surface of the field and the outer pipe (fumarole pipe) 304 stops being inserted into the soil, the operation lever is released and the outer pipe (fumarole pipe) is stopped. pipe) 304
By stopping the driving and depressing the foot pedal 308, the operation valve 30 is opened via the valve lever 307.
2 rotates, and the high pressure air in the air tank 3 is transferred from the inner pipe 303 to the outer pipe (fumarole pipe) 304.
The gas is ejected from the fumarole hole 309a at the tip. When this compressed air is ejected, the depth adjusting plates 4, 4 are provided in the present invention, so that the high pressure air is prevented from leaking out through the opening through the outer pipe (fumarole pipe) 304. It creates cracks in the deep layer, expands and softens the soil, and increases the effect of supplying high-pressure air (oxygen) into the soil. When the blowout of the compressed air is finished, the foot pedal 308 is released, the outer pipe (fumarole pipe) 304 is pulled out from the hole 5, and the soil improvement machine is moved to the next work site. Note that the compressor 2 automatically operates so that the air in the air tank 3 does not exceed a predetermined pressure, but the pressure accumulation time from when the compressed air in the air tank 3 is blown to the predetermined pressure is limited to It is desirable that the time required for pulling out the fumarole pipe (fumarole pipe) 304 from the hole 5, moving the soil conditioner to the next work site, and inserting the outer pipe (fumarole pipe) 304 into the soil to a predetermined depth is shorter.

The installation height of the depth adjustment plate 4 can be arbitrarily moved relative to the outer pipe (fumarole pipe) 304 by tightening or loosening the screw 402, and the insertion depth of the outer pipe (fumarole pipe) 304 into the soil can be adjusted. It is possible to arbitrarily adjust it, and by reversing the top and bottom, the flat plate 404 or the convex portion 405 can be positioned either above or below. As shown in FIG. 7, the depth of the hole 5 is L when the depth adjustment plate 4 is not attached, and as shown in FIG. Outer pipe (fumarole pipe) 3 on the side
04, the depth of the hole 5 is L', which is approximately the same as L, and a funnel-shaped opening 501 is formed at the upper end thereof. When injecting soil conditioners, fertilizers, agricultural chemicals, etc. into this hole 5, the injection work is easier in the case shown in Fig. 8 than in the case shown in Fig. 7 due to the funnel-shaped opening 501 formed. Moreover, in the case of injections, powders, and granules, they fall naturally along the funnel-shaped opening 501 beyond the angle of repose, making the injection work easier and more reliable.

The depth adjustment plate 4 is attached to the outer pipe (fumarole pipe) 30.
4, and attach the convex part 40 as shown in Fig. 9.
5 is placed downward, the depth of the hole 5 is , and a funnel-shaped opening 501 is formed, and when the protrusion 405 is placed upward as shown in FIG. 10, the depth of the hole 5 is The depth of the hole 5 is adjusted to the same depth '. In the cases shown in FIGS. 8 to 10, the flat plate 404 prevents leakage of high-pressure air from the opening of the hole 5, and the effect of supplying high-pressure air (oxygen) to the soil is maintained as in FIG. 7. dripping

In the above embodiment, the depth adjustment plate 4 is divided into two parts, but the structure is not limited to two parts. Any other structure may be used as long as it can be fixed in place and can be turned upside down. Furthermore, the present invention is applicable not only to a type equipped with a handle as in the above embodiment, but also to a type having wheels for movement, or a fully automatic type soil improving machine such as one mounted on a tractor or the like. The same applies.

As explained above, according to the soil insertion depth adjustment device of the fumarole pipe in the pneumatic soil improvement machine of the present invention, the depth adjustment plate 4 is moved up and down and fixed on the outer periphery of the fumarole pipe (outer pipe) 304. Because it is installed freely, the depth of insertion of the fumarole pipe into the soil can be freely selected, and the most effective soil improvement can be achieved by adjusting the depth to the optimum depth according to soil conditions, crops, climate, etc. .

Further, the depth adjustment plate 4 can be turned upside down with respect to the fumarole pipe (outer pipe) 304, and the opening of the drilled hole 5 formed by inserting the fumarole pipe into the soil is formed in a funnel shape on one of the upper and lower sides. 501, when working with the protrusion 405 facing down, the funnel-shaped opening 501 can be formed at the opening of the hole 5, and the soil conditioner can be poured into the hole 5 formed by the fumarole pipe. When injecting fertilizers, agricultural chemicals, etc., the work is easy to do, and they can be poured naturally into the hole 5 through the funnel-shaped opening 501 easily and reliably.

[Brief explanation of drawings]

Fig. 1 is a partial longitudinal side view of the entire pneumatic soil conditioner, Fig. 2 is an enlarged sectional view taken along line X-X in Fig. 1, and Fig. 3 is a side view taken from the direction of arrow Y in Fig. 1.
Figure 4 is a plan view of the soil insertion depth adjustment device;
6 and 6 are partial side views of the fumarole pipe with the soil insertion depth adjustment device attached, and FIG. 7 is a side sectional view of the fumarole pipe without the soil insertion depth adjustment device attached and an explanation of its operation. 8 to 10 are side sectional views and action explanatory views of a fumarole pipe equipped with an underground insertion depth adjusting device. A... body of the soil improvement machine, B... automatic driving mechanism, C... soil insertion depth adjustment device, 1... engine, 101... starter, 102... fuel tank, 103... carburetor, 104...Reducer, 10
5,107...Pulley, 106...V belt, 1
08... Tension pulley, 109... Tension arm, 110... Cover, 111... Muffler, 112... Shaft, 113, 114... Bevel gear, 115, 117... Bearing, 116...
...Camshaft, 118...Cam ring, 119
...Buffer body, 120... Cylindrical body, 121... Rotating shaft, 122... Receiving body, 2... Compressor, 201...
... Cylinder, 202 ... Cylinder head, 203
...Safety valve, 204...Air cleaner, 205...
... Discharge port, 206 ... Pipe, 207 ... Pressure gauge, 3 ... Air tank, 301 ... Handle, 302 ... Operation valve, 303 ... Inner pipe, 304 ... Outer pipe (fumes pipe), 305
...Stroke tube, 306...Spring, 307...
Valve lever, 308...Foot pedal, 309
...Sharp part, 309a...Blowhole, 4...Depth adjustment plate, 401...Screw hole, 402...Screw, 4
03... Washer, 404... Plane plate, 405...
...Convex portion, α...Inclination angle of convex portion, 5... Hole, 501
...Funnel-shaped opening, L, L',,'...Depth of the hole.

Claims (1)

[Scope of utility model registration request] An engine, a compressor driven by the engine, an air tank that stores air pressurized by the compressor, and a jet that communicates with the inside of the air tank via an operating valve and hangs from the bottom of the air tank. a pipe, and with the distal end side of the fumarole pipe inserted into the soil, the operating valve is opened to blow out high pressure air in the air tank into the soil from a fumarole hole opened at the distal end of the fumarole pipe. In the pneumatic soil improvement machine, the fumarole pipe is provided with an adjustment plate that regulates the depth of insertion into the soil, and the adjustment plate is movable up and down with respect to the outer periphery of the fumarole pipe, can be fixed freely, and can be turned upside down. A fumarole pipe in a pneumatic soil improvement machine is characterized in that a convex part is provided on one of the upper and lower sides of the fumarole pipe so that the opening of the hole formed when the fumarole pipe is inserted into the soil is funnel-shaped. Soil insertion depth adjustment device.