JPS6118645Y2 - - Google Patents

Description

[Detailed description of the invention] This invention relates to an aeration type soil improver that sprays air into the soil to easily perform inter- and deep cultivation of the base of trees and the like, and also to supply oxygen to the soil.

Conventionally, the above-mentioned soil improvement machine has been equipped with an engine, a compressor driven by the engine, and an air tank that stores the air pressurized by the compressor, and the inside of the air tank is controlled via an operating valve. A communicating inner pipe is suspended from the bottom of the air tank, an outer pipe is slidably fitted to the inner pipe, and the tip of the outer pipe is driven into the soil, and the operating valve is opened to release the high-pressure air in the air tank. There is a known system in which the gas is ejected into the soil from a fumarole provided at the tip of the outer pipe.

However, in conventional soil improving machines of this type, when driving the outer pipe into the soil, the worker lifts the machine and releases the lift, adding almost the entire weight of the machine to the outer pipe. Since the tip end was driven into the soil, this driving operation required a great deal of effort and took a long time. In addition, pulling out the outer pipe that has been driven into the soil requires a great deal of labor because the worker has to lift the machine body, and furthermore, the driving and pulling operations are manual and cumbersome.

The present invention utilizes the power of the engine to strike the outer pipe, making it possible to drive the tip of the outer pipe into the soil easily and efficiently with less effort. The outer pipe can be easily pulled out by pulling out the outer pipe.
Furthermore, the work of pulling out the outer pipe can be done with a simple operation, and safety can be ensured.
It is an object of the present invention to provide a fumarole-type soil improvement machine that can eliminate the drawbacks of the conventional ones mentioned above.

In order to achieve this objective, the present invention is equipped with a soil improvement machine body similar to the conventional blower type soil improvement machine described above, and this body is supported on a frame so that it can be raised and lowered, and the driving force is transmitted from the engine. a driving mechanism that applies the entire weight of the main body to the base end of the outer pipe; and an outer pipe pulling mechanism that raises the main body relative to the frame using a drive source provided in the main body. The frame includes a stopping means that automatically stops the lifting operation of the pull-out mechanism at the raised position of the main body by sensing this, and a fall prevention means that allows the member on the main body side to rise and prevents this member from falling from the stopped position. It was installed on.

Hereinafter, one embodiment of the present invention will be described with reference to the drawings.

In FIG. 1 showing the back side of this embodiment, the symbol A
is the main body of the soil improvement machine, and this main body A, as shown in FIGS. 1 to 3, includes an engine 1, a compressor 3 driven from the engine 1 via a reducer 2, and 3 and an air tank 7 for storing pressurized air. The engine 1 is
A mixture is created in a carburetor 104 from air taken in from an air cleaner 105 and fuel supplied from a fuel tank 102, which is disposed at the top of the main body A.
By burning this mixture, the output shaft 10
1 (see FIG. 4) is driven, and exhaust gas after combustion is discharged into the atmosphere via a muffler 103. As shown in FIG. 4, the reducer 2 is
A pinion 202 fitted to the output shaft 101 of the engine 1 and a gear 20 fitted to the shaft 203
4 are meshed within the case 201 so that the rotation of the engine output shaft 101 is transmitted to the shaft 203. As shown in FIGS. 3, 4, 8, and 9, the compressor 3 is provided directly connected to the reducer 2, and a balance weight 301 that also serves as a crank is fitted to the shaft 203. , a connecting rod 302 is rotatably fitted into this, and the connecting rod 302 is fitted into a cylinder 303 and connected to a piston (not shown), and the shaft 2
The rotation of the piston 03 is converted into reciprocating motion of the piston via the connecting rod 302. A cylinder head 307 is fixed to the cylinder 303 via a seat plate 304, and inside the cylinder head 307 is a partition wall 307.
A is partitioned into a suction chamber 308 and a discharge chamber 309. The suction chamber 308 is communicated with the atmosphere through the air filter 4, and communicated with the inside of the cylinder 303 through a suction port 304a formed in the seat plate 304 through a valve 305 that opens only toward the cylinder 303 side. Further, the discharge chamber 309 is connected to the inside of the cylinder 303 via a valve 306 that opens only to the inside of the discharge chamber 309 through a discharge port 304b formed in the seat plate 304, and is connected to an air tank by a pipe 5 connected via a joint 5a. It is connected to 7. moreover,
A safety valve 6 is communicated with the discharge chamber 309 . The compressor 3 operates by reciprocating the piston fitted into the cylinder 303, so that the valve 305 is closed during normal operation.
and 306 are alternately opened and closed, and outside air is sucked into the cylinder 303 from the suction port 304a via the air filter 4 and the suction chamber 308, and the air pressurized here is passed from the discharge port 304b to the discharge chamber 309, the joint 5a,
It is introduced into the air tank 7 via the pipe 5. 1st
As shown in Figures 3 to 3, a mounting base 8 is fixed on the air tank 7, the engine 1 is fixed on the mounting base 8, and a reduction gear 2 is mounted on the side of the engine 1.
The compressors 3 are integrally arranged in parallel.

An inner pipe 10 is connected to the bottom of the air tank 7 via an operating valve 9. As shown in FIGS. 1 to 4, the operating valve 9 includes a rotary valve body 902 rotatably supported within a valve housing 901.
A valve shaft 903 fixed to 02 protrudes outside the valve housing 901, a valve lever 904 is fixed to this protrusion, and a pin 904a provided on the valve lever 904 is slidably fitted into a long hole 905a of an arm 905. It is inserted. The arm 905 is pivotally connected to the valve housing 901 via a pedal shaft 906, and a pedal 907 is fixed to the tip of the arm 905.
One end of a spring 908 is connected to the distal end of the spring 908, and the other end of the spring 908 is locked to a locking body 11d provided on a protector 11b of the stroke cylinder 11, which will be described later. The flange 10a at the upper end of the inner pipe 10 is fixed to the lower surface of the valve housing 901 of the operating valve 9, and the inner pipe main body 10b is integrally suspended from the flange 10a. As shown in FIGS. 10 and 11, the upper end portion of a stroke tube 11 is fixed to the lower surface of the flange 10b of the inner pipe 10, and the stroke tube 9 has a cylindrical body 11.
A protector 11b is integrally provided at the lower end of the cylindrical body 11a so as to protrude from the outer periphery of the cylindrical body 11a.
A support tube 11c protrudes from the outer periphery of the tube.

As shown in FIGS. 1, 2, 10, and 11, the inner pipe 10 has an outer pipe 1.
The proximal ends of the two are slidably fitted together. In the outer pipe 12, the passive body 12a is the stroke cylinder 11.
The passive body 12a is fixed to the base end of the outer pipe main body 12b, and the passive body 12a is fixed to the base end of the outer pipe main body 12b.
A nozzle 13 is fitted and fixed to the tip of 2b. The nozzle 13 has a plurality of blowholes 13a formed in its peripheral wall, which communicate with the inside of the outer pipe body 12b, and has a pointed tip so that it can be easily inserted into the soil.

The operation valve 9 is normally closed, and therefore communication between the air tank 7 and the inner pipe 10 is cut off.
When pressed against the tension of the arm 905, the arm 905 rotates, and the valve body 9
02 opens the operating valve 9. Therefore, the air tank 7 and the inner pipe 10 are communicated with each other, and the high-pressure air in the air tank 7 is ejected from the blowhole 13a through the inner pipe 10, the outer pipe 12, and the nozzle 13. When the pressure on the pedal 907 is released, the spring 908 is released. The restoring force causes the valve body 902 to rotate back and close the operating valve 9.

In FIGS. 2 to 4, reference numeral a designates a driving mechanism, and this driving mechanism a is constructed as follows. A drive pulley 14 is fitted and fixed to an end of the shaft 203 of the reduction gear 2 that protrudes from the compressor 3. Further, a bearing cylinder 15 is fixed to the support cylinder 11c of the stroke cylinder 11, and this bearing cylinder 1
A driven pulley 17 is fitted and fixed to the end of the intermediate shaft 16 which is pivotally supported by the intermediate shaft 16 and which protrudes from the bearing sleeve 15. An endless V-belt 18 is stretched between the drive pulley 14 and the driven pulley 17. Within the gearbox portion 15a of the bearing tube 15, a bevel gear 19 fitted onto the intermediate shaft 16 is meshed with a bevel gear 20 of a camshaft 21 pivotally supported by the support tube 11c.
The end of the camshaft 21 opposite to the side where the bevel gear 20 is fitted projects into the cylinder body 11a of the stroke cylinder 11, and an eccentric cam 21a is provided on this projecting part. The cam 21a is supported on the passive body 12a of the outer pipe 12 so as to be supported thereon. and,
While the engine 1 is running, the drive pulley 14, the endless V-belt 18,
The driving force is transmitted to the intermediate shaft 16 through the path of the driven pulley 17, and the bevel gears 19, 2 are transmitted from the intermediate shaft 16 to the intermediate shaft 16.
0, the driving force is transmitted to the cam 21a via the camshaft 21, and the cam 21a is rotated.

In FIG. 3, reference numeral b indicates a control and safety mechanism, and this safety mechanism b is constructed as follows. As shown in FIGS. 3 and 6, the air tank 7
A sensing unloader 26 is fixed through a joint 25, and the sensing unloader 26 is communicated with the inside of the air tank 7 through a communication hole 25a opened in the joint 25. Further, as shown in FIGS. 3 and 7, an operating unloader 29 is fixed to the air tank 7 via a three-way joint 28, and this operating unloader 29 connects two of the three-way passages 28a opened to the three-way joint 28. It communicates with the sensing unloader 26 via a passageway and a relay tube 27 . Another communication path of the three-way communication path 28a is connected to an operating unloader 32 shown in FIGS. 8 and 9 via an extension tube 31.
The operating unloader 32 is fixed to the cylinder head 307.

Then, the sensing unloader 26
When the air pressure inside the air tank 7 is detected and the air pressure exceeds the set pressure, the internal passage opens against a pressure detection spring (not shown) provided inside the air tank 7, and the air inside the air tank 7 is transferred from the communication passage 25a to the relay tube 27. Operate via unloader 29 and actuate unloader 32
The sensing unloader 26 has a rod 26 with a knob 26b on the top.
a is protruded, and holding this knob 26b, the rod 2
By pulling 6a, the internal passage can be opened and closed manually as needed.

Further, the actuation unloader 32 is actuated by the air pressure in the air tank 7 brought through the sensing unloader 26, and when the air pressure in the air tank 7 exceeds the set pressure, the suction chamber 308 of the compressor 3 is activated.
The rod 32a inserted therein advances and pushes the valve 305 of the suction port 304b, keeping it open so that air compression is not performed even if the piston of the compressor 3 is reciprocating. When the air pressure in the air tank 7 decreases, the operating unloader 3
The rod 32a is returned to the position before entering by a spring (not shown) in the compressor 3, and is separated from the valve 305 of the suction port 304a, and the compressor 3 enters normal operation.
High pressure air is forcedly fed from 07 to the air tank 7 side.

The operating unloader 29 is a sensing unloader 2
When the air pressure in the air tank 7 becomes equal to or higher than the set pressure due to the air pressure in the air tank 7 brought through the rod 6, the rod 29a advances in the projecting direction against a spring (not shown) provided inside the rod 29a. When the air pressure decreases, the spring causes the rod to return to its previous position and move back.
A locking metal fitting 29c is fixed to the locking metal fitting 29c.
One end of the control cable 30 (inner) is connected to 9c, and the other end of the control cable 30 (inner) is connected to a bifurcated fitting 35 at both ends of the carburetor throttle system, which will be described later.
(See Figure 12). Note that the control cable 30 (outer) is supported by a cable receiver 29b fixed to the operation unloader 29.

Further, as shown in FIGS. 3, 12, and 13, a mounting plate 33 is fixed onto the carburetor 104 with nuts, and a bifurcated metal fitting 35 at both ends is attached to the mounting plate 33 with a pin 34 as a fulcrum. It is pivoted so that it can move up and down. The bifurcated metal fittings 35 at both ends sandwich the throttle rod 104a, which protrudes onto the carburetor 104, with its bifurcated portion on the tip side.
The throttle rod 10 is engaged with the collar 104b provided at the upper end of the throttle rod 104a, and rotates the bifurcated metal fittings 35 at both ends.
4a, and a cable end 36 fixed to the operating cable 30 is engaged on the distal end of the bifurcated metal fitting 35 at both ends. In FIG. 13, reference numeral 37 is a spacer interposed between the mounting plate 33 and the bifurcated metal fittings 35 at both ends by being fitted onto the pin 34.

Further, the throttle rod 104a is connected to a throttle valve (not shown), and when the throttle rod 104a rises, the opening of the throttle valve increases, and when the throttle rod 104a descends due to a spring (not shown), the opening of the throttle valve decreases. There is. Then, when the air pressure in the air tank 7 is low, the rod 29a is retracted by a spring (not shown) in the operation unloader 29, so the control cable 30 (inner) is pulled through the locking fitting 29c, and the control cable 30 (inner) is pulled through the cable end 36 at both ends. As the bifurcated metal fitting 35 rotates and this metal fitting 35 engages with the collar 104b, the throttle rod 104a is pulled up as shown by the chain line in FIG. 12, and the throttle valve is opened to a high degree. Furthermore, as the air pressure in the air tank 7 increases, the rod 29a of the operation unloader 29 protrudes and the control cable 30 (inner) is loosened, so that the throttle rod 104a is pushed in as shown by the solid line in FIG. The throttle valve opens at a low opening.

In FIG. 1, reference numeral B designates a frame body that supports the soil improvement machine main body A in a vertically movable manner, and is constructed as follows. As shown in FIG. 1, FIG. 14 to FIG.
A grounding frame 40 protruding perpendicularly to the longitudinal direction is fixed to the other end of the pillar 38, and a reinforcing plate 41 is fixed between the other end of the pillar 38 and the grounding frame 40. There is. Axles 42 are supported by axle mounts 43 near the other end of the pillar 38, and wheels 44 are attached to these axles 42.
8 and is rotatably fitted to the support column 38.

As shown in FIGS. 1, 2, 14 to 16, the mounting frame 451 of the elevating body 45 is removably fixed to the mounting boss 7a provided on the outer surface of the air tank 7 of the main body A with bolts 46. ing. Elevating body 45
Roller shafts 452 are mounted on the upper and lower ends of the mounting frame 451,
A left guide roller 454 and a right guide roller 454 are rotatably attached to the support column 453 , and these rollers 454 are rotatably engaged and supported within the support column 38 . It is loosely inserted into the opposing opening passage 38a.

The outer pipe pulling mechanism c that raises the main body A relative to the frame B is constructed as follows.
As shown in FIG. 10, a reduction gear box part 15b is fixed to a gear box part 15a of the bearing sleeve 15 of the driving mechanism a, and a harmonic drive type reduction gear 22 is installed inside this box part 15b. In the harmonic drive type reducer 22, a wave generator is mounted on the opposite side of the driven pulley 17 to the bevel gear 19 of the intermediate shaft 16, a fixed side circular spline is provided in the reducer box part 15b, and the output Axis 2
A rotating side circular spline is attached to a holding part integral with 3, and a flex spline is interposed between the wave generator and the fixed and rotating both side circular splines. The output shaft 2
A drive sprocket 24 is fitted and fixed to the end protruding from the reducer box portion 15b of No. 3, and this sprocket 24 is meshed with an endless chain 67 (see FIG. 22) mounted on the frame B as described later. ing. Further, as shown in FIGS. 14, 15, 17 to 27, a driven sprocket 48 is pivotally supported at the upper part of one of the pillars 38 by a sprocket shaft 47, and a protruding shaft is mounted at the lower part of the pillar 38. A idler wheel 66 is pivotally supported at 65, and the driven sprocket 48
The endless chain 67 is hung on the idler wheel 66. This chain 67 is supported by a chain guide 68 at a plurality of locations in the vertical direction of the column 38.

A cylindrical body 49 is fixed to the column 38, and a lock shaft 50 is fitted into the cylindrical body 49 so as to be movable back and forth, and the distal end of the lock shaft 50 engages and disengages between the teeth 48b of the sprocket teeth 48a of the driven sprocket 48. An engaging part 50a that can be engaged is formed with a guide part 50b at the middle part of the lock shaft 50, a small diameter part 50c at the end part, and between the guide part 50b and the end part of the cylinder body 49. A spring 51 provided urges the lock shaft 50 forward, that is, in the direction of engagement.
A lever shaft 53c of a lock lever 53 is rotatably supported on the column 38 via a support fitting 52, and a cylinder shaft 54 is fitted onto this lever shaft 53c.
4 is fixed to the lever shaft 53c with a pin 55, and the arm 54a of the cylinder shaft 54 is connected to the small diameter portion 50c of the lock shaft 50 with a pin 56. A lever body 53a is provided between the lever shaft 53c and the grip 53b of the lock lever 53, and a spring 59 is installed between a spring stopper pin 53d provided on the lever body 53a and a spring stopper 58 provided on the support post 38. . A sensing tool 57 is fixed to the cylindrical shaft 54, and the sensing tool 57 loosely passes through a window hole 38b opened in the pillar 38 and projects into the pillar 38 so as to be able to engage with the guide roller 454. Each of these members constitutes a locking means d.

Further, a support 60 fixed to the upper part of the other support column 38 is installed on a pivot 62, a cylindrical shaft 61c of a drop prevention lever 61 is rotatably fitted and supported on the pivot 62, and a weight receiving tool is attached to the cylindrical shaft 61c. 63 is fixed. The weight receiving part 63a of the weight receiving tool 63 loosely passes through the window hole 38c opened in the support 38 and projects into the support 38, and the lower side thereof is at right angles to the oblique side so as to allow the guide roller 454 to rise but to prevent the guide roller 454 from descending. It is formed in a triangular shape. The weight receiver 63 is provided with a regulating portion 63b that regulates rotation of the weight receiver 63 so as to be able to abut against the outer surface of the support column 38. Further, the central annular portion of the spring 64 is fitted to the cylindrical shaft 61c of the drop prevention lever 61, and one end of the spring 64 is locked to the lever body 61a between the cylindrical shaft 61c of the drop prevention lever 61 and the grip 61b. , the other end of the spring 64 is abutted against the outer surface of the support column 38. Each of these members constitutes a fall prevention means e.

In FIG. 24, reference numerals 66a and 66b represent a contact ring portion of the idler wheel 66 and a flange portion for preventing the chain from coming off.

Next, the use of the fumarole-type soil conditioner of this embodiment will be explained together with the operation of the outer pipe pulling mechanism c described above.

First, as shown in FIG.
The wheels 44 are grounded by tilting the handle 39.
Hold the fumarole-type soil conditioner and push it to the location where the fumarole will be applied. Here, the grounding frame 40 is grounded and the frame body B is made to stand upright on the soil. In this state,
The weight receiving part 63 of the weight receiving tool 63 provided on the fall prevention means e
a supports the upper guide roller 454 (see FIG. 26), and the nozzle 13 of the outer pipe 12
The lower end is located substantially above the lower end of the grounding frame 40, so that the main body A is held by the frame B and does not fall. Further, the lock lever 53 of the lock mechanism d is tilted down as shown by the chain line in FIG. 21, and the lock shaft 50 is moved back and maintained in a disengaged state with the driven sprocket 47 by the action of the spring 51. In this state, when the fall prevention lever 61 is rotated against the spring 64 to release the support of the guide roller 454 by the weight receiving part 63a of the weight receiving tool 63, the main body A is slightly moved against the frame B due to its own weight. , the lower end of the nozzle 13 touches the ground, and the weight of the main body A acts on the outer pipe 12, causing the weight receiving body 12a provided at the upper end of the outer pipe 12 to move against the cam 21a for sliding movement with the inner pipe 10. and the cam 21
The entire weight of the main body A is applied to the weight receiver 12a of the outer pipe 12 via a. Along with this, cam 2
Since 1a is eccentric by the amount of eccentricity Δl shown in FIG. 11, the weight receiving body 12a is struck by the pressing force caused by the rotation of the cam 21a. At this time, as described above, the entire weight of the main body A is transferred to the weight receiving body 12a via the cam 21a.
Because of the relationship in which the cam 21a acts on
2 is efficiently driven into the soil.

During this driving, the driving force decelerated by the harmonic drive type reducer 22 is transmitted from the intermediate shaft 6 to the endless chain 67 via the drive sprocket 24, but the driven sprocket 47 with which this chain 67 meshes is connected to the lock shaft. 50 is released and is in a state where it can freely rotate, the endless chain 67 freely rotates together with the driven sprocket 48 without the main body A rising relative to the frame B. Therefore, the pull-out mechanism c does not interfere with the driving of the outer pipe 12, and the outer pipe 12 described above is lowered while the main body A is lowered relative to the frame B.
is inserted.

Driving of the outer pipe 12 is possible until the main body A descends to the lowering limit D. However, before the driving process or the start of driving, the air in the air tank 7 accumulates to the set pressure, and in this state, the control and safety The operation unloader 32 of mechanism b operates and the compressor 3
The air pressure feeding effect is released. Further, the throttle opening of the carburetor 104 is reduced to a low opening via the control cable 30 connected to the operation unloader 29 and the bifurcated fittings 35 at both ends.

After the outer pipe 12 is driven into the soil to the required depth as described above, the pedal 907 is pressed to open the operating valve 9 and the high pressure air in the air tank 7 is transferred to the nozzle 13 provided at the tip of the outer pipe 12.
It is ejected into the soil from the fumarole 13a. Thereafter, when the pressure on the pedal 907 is released, the operation valve 9 is closed.

When high-pressure air is blown out, the pressure of the air in the air tank 7 decreases, so the operation unloader 32 stops working, the rod 29a of the operation unloader 29 is retracted, the control cable 30 is pulled, and the bifurcated fittings 35 at both ends are rotated. By moving, the throttle opening becomes high. The high pressure air pumped by the operation of the compressor 3 is accumulated in the air tank 7. Note that when the pressure inside the air tank 7 rises to the set pressure, the air pressure feeding action by the compressor 3 stops as described above, and the throttle opening becomes a low opening.

After releasing the pressure on the pedal 907, when the lock lever 53 is rotated clockwise from the chain line position in FIG. The driven sprocket 48 is inserted between the teeth 48b, and the rotation of the driven sprocket 48 is stopped. When the lock lever 53 is rotated in this manner, the spring 59 exceeds the neutral position, so that the lock shaft 5 is rotated as shown by the solid line in FIG.
0 moves forward and the driven sprocket 48 becomes locked. In this locked state, the movement of the endless chain 67 is also stopped, but the drive sprocket 24 that is meshed with the chain 67 is rotated by the driving force transmitted from the engine 1 when the throttle opening is at a high opening. As a result, main body A begins to rise relative to frame B. As the main body A rises, the load bearing body 12a is supported by the protector 11b of the stroke cylinder 11, and the outer pipe 1 is driven into the soil.
2 is pulled out. The main body A has a guide roller 45.
4 is engaged with the support column 38, the posture at the time of rising is controlled, and the outer pipe 12 is pulled out vertically. When the outer pipe 12 is pulled out from the soil, the main body A rises above the stop position S,
The upper guide roller 454 loads the load receiving tool 63 from below.
The weight bearing part 63a is retracted against the spring 64 and reaches above it, and then the guide roller 454 abuts the sensing tool 57 from below and rotates the sensing tool 57 clockwise in FIG. 19. The rotation of the sensing tool 57 causes the lock lever 53 to rotate counterclockwise from the solid line position shown in FIG. , the engaging portion 50a is pulled out from the tooth gap 48b of the driven sprocket 48, and this state is maintained. Therefore, the driven sprocket 48 is unlocked and becomes freely rotatable, the endless chain 67 is moved by the driving force of the drive sprocket 24, and the lifting action of the main body A relative to the frame body B is stopped. In this state, the main body A tries to fall due to gravity, but the weight receiving part 63b of the weight receiving tool 63 protrudes again due to the restoring force of the spring 64 and prevents the main body A from falling, so that the main body A is moved to the stop position S. is maintained. Then, the frame B is folded down and the wheels 44 are used to transport the fume type soil improvement machine from the place where the fume is emitted into the soil.

In addition, in the present invention, the outer pipe pulling mechanism is not necessarily limited to the configuration of the above-described embodiment, but may transmit the driving force of the engine to the drive pinion via the clutch, and this pinion may be engaged with a rack provided on the frame. Alternatively, the clutch may be engaged only when the main body is raised, or the main body may be suspended from a frame using a wire rope, and the wire rope may be wound around a drum driven by an engine. Alternatively, the main body may be raised relative to the frame by an appropriate means using high-pressure air in an air tank.

In addition, in place of the locking means d of the embodiment, the present invention detects the rise of the main body and mechanically interrupts the clutch provided in the drive force transmission system, thereby preventing the rising operation of the outer pipe pulling mechanism from reaching the raised position of the main body. The frame may be provided with a stopping means that automatically stops the device at a certain point.

As explained above, the fumarole-type soil improvement machine of the present invention uses the full weight of the main body as well as the rotation of the cam that utilizes the power of the engine to drive the outer pipe into the soil, making this work easier. It can be easily and automatically done in a short time with little effort, and by raising the main body relative to the frame using a drive source such as an engine installed in the main body, the outer pipe that has been driven into the soil can be pulled out. Therefore, this work can be easily carried out with little effort.Furthermore, the lifting operation of the outer pipe pulling mechanism is sensed by the stopping means such as the locking means of the above-mentioned embodiment, and the operation of this pulling mechanism is stopped at the raised position of the main body. At the same time, parts such as guide rollers on the main body side are prevented from falling from the stop position by means of fall prevention means, so this operation is simple even though the outer pipe is pulled out by mechanical means. Moreover, the main body can be held at a stopped position to prevent it from falling, so it has the effect of being safe.

[Brief explanation of the drawing]

Fig. 1 is a rear view showing a fumarole-type soil improvement machine according to an embodiment of the present invention, Fig. 2 is a side view of a part of the main body of the soil improvement machine taken longitudinally, and Fig. 3 is a front view showing the upper part of the main body. Figure 4 is an enlarged sectional view taken along line A--A in Figure 3, Figure 5 is an enlarged side view of the other side of the pedal part in Figure 3, and Figure 6 shows the sensing unloader part in Figure 3. FIG. 7 is an enlarged partially longitudinal sectional view showing the operating unloader portion of FIG. 3; FIG. 8 is an enlarged vertical sectional view showing the cylinder head portion of the compressor of FIG. 3; 9 is a sectional view taken along the Ro-Ro line in FIG. 8, FIG. 10 is an enlarged partial sectional view taken along the Ha-Ha line in FIG. 2, and FIG.
12 is a side view showing the operating section of the carburetor shown in FIG. 3; FIG. 13 is a plan view showing the operating section; FIG. The figure is a side view of the frame body, Figure 15 is a front view of the frame body with a part of the height direction omitted, and Figure 16 is a side view of the frame body.
A sectional view taken along the Hoh-ho line in Figure 5, and Figure 17 is a cross-sectional view along the
An enlarged rear sectional view of the locking mechanism taken along the Hoh line in the figure, FIG. 18 is a sectional view taken along the Thoth line in FIG. 17, and FIG. Figure 20 is a front view of the main part of Figure 17,
The figure is an explanatory diagram of the operation of the lock mechanism, and Figure 22 is the 14th
An enlarged sectional view taken along the Li-Li line in the figure, Figure 23 is the first
Fig. 4 is an enlarged sectional view taken along the Noonu line in Fig. 4, Fig. 24 is a sectional view taken along the Ruhr line in Fig. 23, and Fig.
5 is an enlarged cross-sectional view taken along the line W--W in FIG. 5, FIG. 26 is a cross-sectional view taken along the W-W line in FIG. 25, and FIG.
FIG. 7 is a sectional view taken along the Kerker line in FIG. 6; A... Soil improvement machine main body, B... Frame, a... Driving mechanism, b... Control and safety mechanism, c... Outer pipe pulling mechanism, d... Locking means (stopping means), e... Fall prevention Means, 1...Engine, 1
01... Drive shaft, 102... Fuel tank, 103
...muffler, 104...carburizer, 104a...throttle rod, 104b...tsuba, 105...air cleaner, 2...reducer, 201...case,
202...Pinion, 203...Shaft, 20
4...Gear, 3...Compressor, 301...Crank and balance weight, 302...Conrod, 3
03...Cylinder, 304...Seat plate, 304a...
...Suction port, 304b...Discharge port, 305, 306
...Valve, 307...Cylinder head, 307a...
...Partition wall, 308...Suction chamber, 309...Discharge chamber,
4... Air filter, 5... Pipe, 5a...
Joint, 6...Safety valve, 7...Air tank, 7a...
...Mounting boss, 8...Mounting stand, 9...Operation valve, 90
1... Valve housing, 902... Valve body, 903... Valve shaft,
904... Valve lever, 904a... Pin shaft, 90
5... Arm, 905a... Long hole, 906... Pedal shaft, 907... Pedal, 908... Spring, 1
0...Inner pipe, 10a...Flange, 10
b...Inner pipe body, 11...Stroke tube, 11a...Cylinder body, 11b...Protector, 1
1c...Support tube, 11d...Locking body, 12...Outer pipe, 12a...Passive body, 12b...Outer pipe body, 13...Nozzle, 13a...Full port, 14...Drive pulley, 15... Bearing tube, 15
a... Gear box, 15b... Reduction gear box, 16... Intermediate shaft, 17... Driven pulley, 18
... Endless V-belt, 19,20 ... Bevel gear, 2
DESCRIPTION OF SYMBOLS 1...Cam shaft, 21a...Cam, 22...Harmony drive type reducer, 23...Output shaft, 24...Drive sprocket, 25...Joint, 25a...Communication path, 2
6... Sensing unloader, 26a... Rod, 26
b...Knob, 27...Relay tube, 28...Three-way joint, 28a...Three-way communication path, 29...Operation unloader, 29a...Rod, 29b...Cable receiver, 29c...Locking metal fitting, 30 ...Control cable, 31...Extension tube, 32...Operation unloader, 32a...Rod, 33...Mounting plate, 34
... Pin, 35 ... Two-pronged metal fitting at both ends, 36 ... Cable end, 37 ... Spacer, 38 ... Support that also serves as guide rail, 38a ... Opening path, 38b,
38c...Window hole, 39...Pipe handle, 40
...Grounding frame, 41...Reinforcement plate..., 42...Axle,
43... Axle mounting fixture, 44... Wheel, 45... Lifting body, 451... Mounting frame, 452, 453... Roller shaft, 454... Guide roller, 46... Bolt, 47... Sprocket shaft, 48 ... Driven sprocket, 48a ... Sprocket tooth, 48b ...
... Between teeth, 49 ... Cylindrical body, 50 ... Lock shaft, 50
a...Engaging part, 50b...Guide part, 50c...
Small diameter portion, 51...Spring, 52...Support fitting, 53...Lock lever, 53a...Lever body, 53b...Grip, 53c...Lever shaft,
53d... Spring retaining pin, 54... Cylindrical shaft, 54a
... Arm, 55, 56 ... Pin, 57 ... Sensing tool,
58...Spring stopper, 59...Spring, 60...Support, 61...Fall prevention lever, 61a...Lever body, 61b...Grip, 61c...Cylinder shaft, 6
2... Pivot, 63... Weight receiver, 63a... Weight receiver, 63b... Regulation part, 64... Spring, 6
5... Projection shaft, 66... Idle wheel, 66a... Contact ring portion, 66b... Flange portion, 67... Endless chain, 68... Chain guide.

Claims (1)

[Scope of utility model registration request] a suction-type soil improvement machine having an engine, a compressor driven by the engine, and an air tank for storing air pressurized by the compressor, an inner pipe suspended from the bottom of the air tank connected to the air tank via an operating valve, an outer pipe slidably fitted onto the inner pipe, and with the tip of the outer pipe driven into the soil, the operating valve is opened to spurt the high-pressure air in the air tank into the soil from a suction hole provided at the tip of the outer pipe; the main body is supported on a frame body so that it can be raised and lowered, and is equipped with a driving mechanism that strikes the base end of the outer pipe with a cam to which driving force is transmitted from the engine and adds the entire weight of the main body to the base end of the outer pipe, and an outer pipe extraction mechanism that raises the main body relative to the frame body using a drive source provided on the main body, and the frame body is fitted with a stopping means that detects the rise of the main body and automatically stops the raising operation of the extraction mechanism at the raised position of the main body, and a fall prevention means that allows a member on the main body to rise and prevents the member from falling from the stopped position.