JPH0452083B2 - - Google Patents

Description

[Detailed Description of the Invention] [Industrial Application Field] The present invention enables deep plowing of soil by driving a pipe having a fumarole at its tip into the soil and blowing out compressed air from the fumarole in that state. The present invention relates to an air-type soil improvement machine that simultaneously supplies air, that is, oxygen, to the roots of plants such as trees and crops, and promotes the activation of plants.

[Prior Art] As such a pneumatic soil improvement machine, the present applicant has developed an engine, a compressor driven by the engine, an air tank that stores air pressurized by the compressor; a pipe that is connected to the air tank via an operating valve and that hangs down from the bottom of the air tank and has a blowhole at its tip; and a pipe that is powered by the engine. An automatic driving mechanism for driving into the soil constitutes a soil improvement machine body, this body, a frame body that supports the body so that it can be raised and lowered, and an engine as a power source for connecting the soil improvement machine body to the frame body. The present invention proposes a device that is equipped with an automatic pulling mechanism that pulls out the pipe driven into the clay pot while raising it, so that the work of driving and pulling out the pipe can be done easily and efficiently with little effort.

In this pneumatic soil improvement machine, as mentioned above, the same engine drives the compressor and the automatic extraction mechanism, and the engine is automatically turned on when the air pressure in the air tank reaches a predetermined set pressure. An automatic control mechanism is also installed to keep the engine in an idling state, eliminating unnecessary high-speed rotation of the engine and improving fuel efficiency.

[Technical Problem of the Invention] However, soil in fields where plants such as trees and crops are cultivated has different soil conditions, such as hardness and softness, and the length of time required to drive the pipe into the soil to a predetermined depth is difficult. is not constant. For this reason, when air is being fed from the compressor into the air tank, that is, when the engine is rotating at high speed and the output is high and the automatic driving mechanism is operating, the pipe can be driven smoothly. If the air pressure in the air tank reaches a predetermined pressure before or during pipe driving, the engine will idle and its output will drop, and the automatic driving mechanism will not operate sufficiently, which may cause This will cause the engine to stall.

[Object of the Invention] The present invention was conceived in view of the above-mentioned circumstances. During the pipe driving operation, the engine is rotated at high speed to maintain a high output state, thereby preventing the engine from stalling, and improving the automatic driving mechanism. The present invention aims to provide a pneumatic soil improving machine which is capable of sufficiently operating the pipe driving work to smoothly perform pipe driving work and to perform efficient deep plowing work.

[Structure of the Invention] In order to achieve this object, the present invention provides an automatic control system that detects the air pressure in the air tank and automatically adjusts the engine to an idling state when the air pressure in the air tank reaches a predetermined pressure. A mechanism is provided between the soil improving machine body and the frame body, and the pipe is driven into the soil by an automatic driving mechanism and the soil improving machine body descends along the frame body by a descending movement. In addition to providing an automatic response mechanism that operates, the automatic response mechanism and the automatic control mechanism are interlocked and configured to maintain the engine at high speed rotation at least while the soil improving machine body is descending. This is a characteristic feature.

[Example] Hereinafter, an example of the present invention will be described with reference to the drawings.

In the figure, symbol A indicates the soil improving machine body, Aa indicates the automatic driving mechanism, Ab indicates the automatic control mechanism, B indicates the frame body, C indicates the automatic extraction mechanism, and D indicates the automatic response mechanism.

The soil improving machine main body A is constructed as follows. An engine 3 is attached to the upper part of an air tank 1 via a mounting base 2, and a reducer 4 and a compressor 7 are directly connected to the output side of the engine 3. The air tank 1 is connected to the joint 1 as shown in FIG.
a, mounting frame part 1b, mounting seat part 1c, communication seat part 1d
etc., and is connected to the compressor 7 via a pipe 8 from the joint 1a. As shown in FIG. 14, the engine 3 has a throttle rod 311 protruding from the main body 310 of the carburetor 300. A flange portion 311a is provided at the flange portion 311a. This collar part 3
11a is fixed at one end by a nut 313, and contacts one end of a swinging tool 314 which is pivotally supported by a pin 315 to be vertically movable at the other end of a mounting plate 312 that is bent upward at right angles. A universal joint 316 is provided at the other end of 314. As shown in FIG. 1, a drive pulley 6 is attached to a drive shaft 5 protruding from the speed reducer 4.

As shown in FIGS. 1 and 13, the compressor 7 includes a cylinder 710, a packing 711, a seat plate 712, and a cylinder head 715, and a valve plate 713 attached to the seat plate 712 with screws 714. ,
The suction port 712a opens and closes only toward the cylinder 710 side, and the cylinder head 715 is partitioned into a suction chamber 716 and a discharge chamber 717 by a partition wall 715a. The suction chamber 716 communicates with the atmosphere through an air filter 718, and the pipe 8 is connected to the discharge chamber 717 through a joint 719.
A safety valve 720 is provided.

An operating valve 9 is provided at the bottom of the air tank 1 as shown in FIGS. 3 and 6.
A valve body 911 is housed in a valve housing 910, and this valve body 911 is connected to a valve shaft 912, a valve lever 913, and a short shaft 9.
14. The arm 915 is connected to an arm 915 pivotally supported on a support shaft 917 via a long hole 915a of the arm 915. The tip of the arm 915 and the locking piece 11 described later
A spring 916 is tensioned between the arm 915 and the arm 915, and a pedal 918 is attached to the base end side of the arm 915. In this state, the operating valve 9 is closed and the pedal 918
When the operator depresses the button, the operation valve 9 is opened.

As shown in FIGS. 1 and 3, an inner pipe 10 is vertically disposed at the bottom of the air tank 1 and communicates with the air tank 1 via an operating valve 9.
This inner pipe 10 includes an inner pipe body 101
The flange 100 fixed to the upper end of the valve housing 9
A flange provided at the upper end of the stroke cylinder 11 is fitted to the lower surface of the flange 100, and is integrally connected to the valve housing 910 and supported together with the stroke cylinder 11. The stroke tube 11 has a cylindrical body 11a, and has a brim-shaped blowout prevention plate 11b formed at its lower end, and the locking piece 11c is formed integrally with this blowout prevention plate 11b. Moreover, on one side of the upper part of the stroke cylinder 11,
As shown in FIG. 2, a gear housing 11d constituting the automatic driving mechanism Aa is formed, and this gear housing 1
A lid 110 is fitted to the outer circumferential portion of the stroke cylinder 11 facing 1d. The inner pipe 10
The upper part of the outer pipe body 121 of the outer pipe 12 is inserted downward from the approximately intermediate position in the length direction, and the upper part of the outer pipe body 121 of the outer pipe 12 is vertically movable.
hangs down longer than the lower end of the inner pipe 10, and a sharp-pointed nozzle 14 is attached to its tip, and a plurality of jet holes 14a are opened in the circumferential direction slightly above the sharp-pointed part of this nozzle 14. ing.

The automatic driving mechanism Aa is configured as follows. A cylindrical case 15 is connected to the gear casing 11d as shown in FIGS. 2 and 3, and an input shaft 16 is pivotally supported within the cylindrical case 15 and the gear casing 11d. is input pulley 1
7 is installed. A bevel gear 18 is attached to the input shaft 16 in the gear housing 11d, and a bevel gear 19 that meshes with the bevel gear 18 is attached to one end of a camshaft 20 that is supported from the gear housing 11d toward the stroke cylinder 11. There is. An eccentric cam 20a is provided at the other end of the camshaft 20 with an eccentricity of Δl from the axis of the camshaft 20.
The eccentric cam 20a and the receiver 120 are arranged so that when the outer pipe 12 is pushed up along the inner pipe 10, the cam surface 210 of the eccentric cam 20a hits the receiver 120 with a predetermined stroke, and the receiver 120 The eccentric cam 20a is configured not to strike the receiving body 120 when the lower surface thereof is in contact with the impacting body 13.

A V-belt 21 is wound between the drive pulley 6 and the pulley 17, a tension mechanism 22 is provided on the V-belt 21, and the outside of these belt transmission systems is covered with a transmission cover 23. .

The soil improving machine main body A further includes the following configuration. An elevating body 24 shown in FIGS. 7 and 8 is attached to the outside of the air tank 1. This elevating body 24 is attached to the elevating frame 240 by tightening bolts 241 to the mounting frame portion 1b. A pair of lifting shafts 242 are provided, and a roller 243 is attached to each outer end of the lifting shaft 242. Furthermore, pedal guides 25 are provided on the sides of the pair of left and right lifting frames 240.

The automatic control mechanism Ab is configured as follows. As shown in FIG. 12, the air tank 1
The sensing unloader 26, which is fixed to the mounting seat 1c through the mounting seat 1c and communicated with the inside of the tank 1, is connected to the rod 26.
a, a knob 26b, and this sensing unloader 2
A tube 27 is connected to 6, and this tube 27
is connected to one of the three-way joints 28 attached to the air tank 1 via the communication seat 1d, and one of the three-way joints 28 is connected to the air tank 1 via the extension tube 30.
An operation unloader 2 screwed onto the mounting frame 1b of the
It is connected to 9. The operation unloader 29 is provided with a rod 29a that can move up and down.
A thin rod 32 is slidably inserted into the metal fitting 31 attached to the metal fitting 9a, and the lower end of the thin rod 32 is locked on the lower side of the metal fitting 31 via a locking tool 34, and is connected to the chain via a hook. The upper ends of 35 are connected, and
As shown in FIG. 14, the upper end of the narrow rod 32 is inserted into and supported by the universal joint 316 of the carburetor 300 via an adjuster portion, and is locked by a locking tool 33. A relay tube 37 is connected to the communication seat portion 1d that communicates with the three-way joint 28, and this tube 37
is communicated with an operating unloader 36 provided in the compressor 7 shown in FIG. 13, and this operating unloader 3
6 and tube 37 are protected by a protector 721. Further, the operating unloader 36 is provided with a rod 36a that is operated by air pressure.
The valve plate 713 is opened and closed.

Then, the sensing unloader 26
When the air pressure inside the air tank 1 is detected and the air pressure exceeds the set pressure, the internal passage opens against a pressure detection spring (not shown) installed inside the air tank 1, and the high pressure air inside the air tank 1 is transferred to the tubes 27, 30, 37. It has a function to flow to the operation unloader 29 and the operation unloader 36 via
By holding the knob 26b at the bottom of the control mechanism and pulling the rod 26a, the operation of the control mechanism Ab can be manually tested as required.

Further, the actuating unloader 36 is actuated by the air pressure in the air tank 1 brought through the sensing unloader 26, and when the air pressure in the air tank 1 exceeds a set pressure, the actuating unloader 36 is inserted into the suction chamber 716 of the compressor 7. The rod 36a that has been inserted advances and pushes the valve plate 713 of the suction port 712a, keeping it open so that the air will not be compressed even if the piston of the compressor 7 is reciprocating. When the air pressure inside the air tank 1 decreases, a spring (not shown) inside the operating unloader 36 releases the rod 36.
a returns to its pre-advance position and separates from the valve plate 713 of the suction port 712a, the compressor 7 enters normal operation, and high-pressure air is pumped from the cylinder 710 to the air tank 1 side.

When the air pressure inside the air tank 1 exceeds a set pressure due to the air pressure inside the air tank 1, which is also brought via the sensing unloader 26, the operation unloader 29 closes against a spring (not shown) installed inside the operation unloader 29. 29a advances in the protruding direction, and when the air pressure decreases, the spring operates to return to the position before advancement and retreat.

As the rod 29a and the metal fitting 31 rise, the locking tool 34,
That is, the thin rod 32 is pulled up following the metal fitting 31,
And when the rod 29a returns and retreats, the locking tool 34
In both cases, the narrow rod 32 is pulled down by the metal fitting 31, and the throttle rod 311 is pushed up.

On the other hand, the frame body B is constructed as follows. As shown in Figures 1, 7, and 8,
A guide rail 38 having a channel-like cross section is formed, and each roller 243 of the elevating body 24 is housed in a passage 38a of the guide rail 38, so that the elevating body 24 moves up and down. The guide rail 38 also includes a handle 39 and a stand 4.
0, horizontal frames 41, 41, a grounding frame 42, a reinforcing plate 43, etc. are provided, and furthermore, on the opposite side from the grounding frame 42, a pair of axle bearings 44, a single wheel 4 via an axle 45 are provided.
6 is pivotally supported, and a footrest 47 is provided on one side of the axle bearing 44. Furthermore, a fall prevention mechanism 48 is provided at the upper part of the guide rail 38, as shown in FIG. In this fall prevention mechanism 48, a pivot 481 is inserted through a bracket 480, and the lower end of a lever 482 is integrally provided with a boss tool 483. 484 are provided.
A spring 488 is also provided between the lever 482 and a locking rod 489 protruding from the outside of the guide rail 38.
is installed. Further, a weight receiver 485 is provided at the lower part of the lever 482 so as to protrude into the guide rail 38 through the window hole 38b.
A weight receiver 485a for receiving the weight is provided, and the lower surface of the weight receiver 485 forms an oblique side portion 485b. The intermediate portion of the lever 482 is bent in a dogleg shape, and the portion of this bent portion that faces the horizontal frame 41 is covered with a protective tube 486. Further, a grip 487 is provided at the upper end of the lever 482.

The automatic extraction mechanism C is configured as follows. First, on the frame body B side, a band hook 49, a disk 49a, a stay 50, a guide rod 51, etc. are provided at the upper position of the guide rail 38, as shown in FIGS. 8 and 9. 52 is fixed with screws 53. Next, on the soil improvement machine main body A side, numeral 54 is a reducer case, and inside this reducer case 54,
A speed reduction mechanism 55 is attached. As shown in FIGS. 2 and 4, this speed reduction mechanism 55 includes an input shaft 1
A wave generator is mounted on the end of the wave generator 6, a fixed side circular spline is provided on the reducer case 54, a rotating side circular spline is attached to a holding member integrated with the output shaft 56, and the wave generator is connected to the fixed side and A flex spline is interposed between the rotating side circular spline and the rotating side circular spline. Further, a spline portion 56a is formed on the output shaft 56, and this spline portion 56
A winding bobbin 57 is pivotally supported via a bearing 58 on the front side of the winding bobbin 57, and a clutch pawl 590 engages with and disengages from a recessed engagement surface 570a (see FIG. 4) of a clutch pawl 570 provided on the winding bobbin 57. A dog clutch 59 having an advanced engagement surface 590a and a circumferential groove 591 is slidably inserted into the spline portion 56a, and the winding bobbin 57 and the dog clutch 59 are slidably inserted into the spline portion 56a.
A spring 60 that urges the clutch 59 away from the winding bobbin 57 is interposed between the boot 6 and the sleeve 571.
Covered by 1.

An actuation mechanism 62 for actuating the automatic extraction mechanism C
As shown in FIGS. 4 and 5, the support 620
is attached to the mounting seat 54a of the reducer case 54 with screws 621, and a linking tool 622 having one end 622a, an intermediate cylindrical part 622b, and the other end 622c is pivoted to this support 620 via a mounting shaft 623. Further, an actuating tool 624 is pivotally supported via a pivot shaft 625. This actuator 624 includes a shifter 624a, a cylinder shaft portion 624b, and an engagement arm 624.
c, a mounting boss portion 624d, etc. are provided. Further, a pair of lock bolts 626 are provided on the mounting boss 624d of the actuator 624, and the actuator 624 and the pivot shaft 625 are integrally constructed. One end 622a of the linking tool 622 is engaged with an engagement hole 915b provided in the arm 915, the other end 622c is engageably opposed to the engagement arm 624c, and the shifter 624a is connected to the circumferential groove of the dog clutch 59. 591 and the engagement arm 62
A plywood board 52 is placed in front of the upward locus of 4c.
Note that reference numeral 627 is a guide rod for the winding bobbin 57. As shown in FIG. 8, the band hook 49
The other end of the belt-like hanging tool 63, which has one end wrapped around it and secured with a rivet 64, passes through the upper side of the guide rod 51 and is fixed to the winding bobbin 57 with a screw 65. It is wound in a spiral around the outer circumference of the .

The automatic response mechanism D is configured as follows. Figures 9, 10, 16 and 17
As shown in the figure, a response tool 66 is provided at the lower end of the elevating body 24 along the guide rail 38. This response tool 66 includes one side 66a, an arcuate side 66b, a rotation regulating stopper 66c, the other side 66d, and a boss 66.
e, etc., and the boss portion 66e is connected to the support shaft 67 and the intermediate cylinder 68.
The boss part 6 is pivotally supported on the elevating body 24 via
The winding part 69b is wound around the outer periphery of 6e, and one end 69a
is locked to one side 66a, and the other end 69c is fixed to the elevating body 2.
A coil spring 69 is provided which is engaged with the rotation control stopper 66c and normally biases the rotation restriction stopper 66c toward the side that abuts the elevating body 24. Further, the lower end of the chain 35 is connected to the tip of the other side 66d, and the chain 35 has a rotation regulating stopper 66c that is connected to the lifting body 2.
4, the thin rod 32 is pulled under tension,
In the state shown in FIG. 9 in which the rotation regulating stopper 66c does not come into contact with the elevating body 24, it is loosened so that the narrow rod 32 is not pulled. On the other hand, on the side edge of the guide rail 38 facing the response tool 66, a lifting body 2 is provided.
The rising end protrusion 70 is provided at the uppermost supporting position where the roller 243 rises along the guide rail 38, that is, the position where the roller 243 is supported by the weight receiver 485 (FIGS. 1 and 11). A descending end protrusion 71 is provided at a position where the elevating body 24 descends and reaches the lowest end position (FIG. 15), and comes into contact with the response tool 66 at each position. Both protrusions 7
0,71 has a lower oblique side 70a and an upper oblique side 71a.
are provided to facilitate contact and separation with the response tool 66.

Next, the operation of the pneumatic improved machine of this embodiment will be explained.

First, with the soil improving machine main body A held in the raised position relative to the frame main body B, the frame main body B is tilted to ground the single wheel 46, and the pneumatic type I push the soil improvement machine. Here, the grounding frame 42 is grounded on the ground surface GL, and the frame body B is made to stand upright on the soil as shown in FIG. In this state,
The upper roller 243 is supported by the weight receiving part 485a of the weight receiving tool 485 provided in the fall prevention mechanism 48 (see FIG. 11), and the nozzle 14 of the outer pipe 12
The lower side is located slightly above the lower end of the grounding frame 42, and the soil improving machine main body A is held by the frame main body B and does not descend. In addition, a hanging tool 67 is spirally wound around the winding bobbin 57, and a clutch pawl 57
The clutch 59 is held in a disconnected state in which the clutch 59 is disengaged from the clutch 590, and the response tool 66 is in contact with the rising end protrusion 70. In this state, hold the grip 487 of the lever 482 and hold the spring 48.
8, rotate the lever 482 against the
When the roller 243 is released from the support of the roller 243 by the weight receiver 485a of Nozzle 1, the soil improving machine body A slightly descends with respect to the frame body B due to its own weight, and
4 comes into contact with the ground, and the weight of the soil improving machine main body A acts on the outer pipe 12, so that the automatic driving mechanism Aa for sliding movement with the inner pipe 10 is activated, and the The receiver 120 contacts the cam 20a, and the total weight of the soil improving machine body A is transferred to the outer pipe 1 via the cam 20a.
2 is added to the receiver 120 of No. 2. At the same time, since the cam 20a is eccentric by Δl, the cam 20a
The receiving body 120 is struck by the pressing force caused by the rotation of a, and the outer pipe 12 is driven into the soil while the soil improving machine main body A descends.

When the soil improving machine main body A starts to descend, the reaction tool 66, which had been in contact with the ascending end protrusion 70 and holding the chain 35 in a loosened state, as shown in FIG. As a result of the contact with 70 being released, the rotation regulating stopper 66c rotates around the support shaft 67 due to the action of the coil spring 69 as shown in FIG.
The chain 35 rotates until it comes into contact with the lifting body 24.
is pulled, and the narrow rod 22 is pulled to project the throttle rod 311 and maintain the engine 3 at high speed and high output. Therefore, while the soil improving machine body A is descending, the automatic driving mechanism Aa is operated at high output to efficiently drive the outer pipe into the soil. The outer pipe 12 is driven to a predetermined depth, and the 15th
As shown in the figure, when the soil improving machine main body A reaches its descending end, the reaction tool 66 comes into contact with the descending end side protrusion 71 and rotates as shown in FIG. The power is maintained at low idle.

Furthermore, when the soil improvement machine main body A descends, if compressed air is being stored in the air tank 1, the engine 3 is maintained at high speed and high output by the automatic control mechanism Ab, so the automatic response mechanism D Even if the engine 3 operates, the engine 3 continues to rotate at high speed, and furthermore, when the soil improving machine main body A starts descending,
Even when the compressed air in the air tank 1 has reached a predetermined pressure and the automatic control mechanism Ab maintains the engine 3 at low output in an idling state, the automatic response mechanism D causes the engine 3 to rotate at high speed. High output.

Note that during this driving operation, since the clutch 59 is in the disconnected state, no driving force is transmitted from the output shaft 56 to the winding bobbin 57, and the lifting tool 65 is almost completely removed from the winding bobbin 57. The soil improving machine main body A descends relative to the frame main body B while being unrolled without resistance.

In this way, after the outer pipe 12 has been driven to the required depth to reach the lowering limit of the soil improving machine body A, when the pedal 918 is pressed, the arm 915 rotates and the valve body 911 opens, causing the high pressure inside the air tank 1 to Air is ejected into the soil from a blowhole 14a of a nozzle 14 provided at the tip of the outer pipe 12.
This fumarole causes cracks in the soil around the fumarole port 14a and deepens the soil, and at the same time as this fumarole, the actuating tool 624 rotates together via the linking tool 622 due to the rotation of the arm 915, so that the spring 60 The dog clutch 59 resists the winding bobbin 5.
7 side, and the clutch pawls 570 and 590 engage with each other. Therefore, the driving force of the engine 3 is transmitted from the output shaft 56 to the take-up bobbin 57 via the dock clutch 59, the lifting tool 67 is wound onto the take-up bobbin 57, and the soil improving machine body A is moved against the frame body B. and begins to rise. As the soil improving machine main body A rises, the contact between the descending end protrusion 71 and the reaction tool 66 is released, the engine 3 rotates at high speed, and the receiver 120 is inserted into the stroke cylinder 11 via the buffer 13. Outer pipe 1 supported and driven into the clay pot
2 is pulled out.

At this time, the winding bobbin 57 and the dock clutch 59
The engagement between the clutch pawls 570 and 590 is such that the engagement surfaces 570a and 590a are formed in a receding angle shape and an advancing angle shape, so that a lifting force is applied to the winding bobbin 57 and a driving force is applied to the dock clutch 59. Therefore, the biasing force of the spring 60 will not be released inadvertently. The soil improvement machine main body A has a roller 24.
3 is guided by the guide rail 38, the posture when rising is restricted, and the outer pipe 12 is pulled out vertically. In addition, the hanging tool 67 is attached to the winding bobbin 5.
7, its diameter gradually increases, so the soil improvement machine body A is slow at the beginning of its rise, but gradually rises faster as it rises, and can be raised in a short time. 1
Since the rising speed at the initial stage of pulling out, which requires the greatest force to pull out the engine 3, is slow, the load placed on the transmission system of the driving force by the engine 3 is small.

Then, when the outer pipe 12 is pulled out from the soil pot, the soil improvement machine main body A rises above the grounding frame 42, and the upper roller 243 pushes the oblique side 485b of the weight receiver 485 from below against the spring 488. The weight receiver 485 is pulled out of the guide rail 38 and reaches above it. When the soil improving machine main body A rises to the upper limit, the dog clutch 68 is moved in the direction away from the take-up bobbin 57 via the shifter 624a due to the collision between the abutment plate 52 and the engagement arm 642c, and the clutch pawls 570 and 590 are moved. The clutch 59 is disengaged from the clutch 59 to be in the disconnected state. As a result, driving force is no longer transmitted from the engine 3 to the winding bobbin 57, and the lifting operation is stopped. In this state, the weight receiver 485 and the weight receiver 485a re-enter due to the restoring force of the spring 488, and the soil improving machine main body A slightly descends to this position due to its own weight, but does not continue to descend from this point. It is blocked by the weight receiver 485, and the soil improving machine main body A is held at the stopped position. Further, the response tool 66 comes into contact with the rising end side protrusion 70, and the engine 3 becomes in an idling state. Then, the frame main body B is folded down and the pneumatic soil improvement machine is moved using the wheels 46 from the place where the fumes are produced in the soil to the next work place.

In addition, the compressed air in the air tank 1 is
Due to the ejection from the nozzle port 14a due to the opening operation of 1, the state becomes empty, and therefore the sensing unloader 26
is activated, the operating unloader 29 is activated, the narrow rod 32 is pulled through the rod 29a and the locking tool 34 of the metal fitting 31, the throttle rod 311 is pulled up, the engine 3 changes from an idling state to high speed rotation, and the compressor 7 is rotated at high speed, the rod 36a of the operating unloader 36 is separated from the valve plate 713, and the air compressed by the compressor 7 is sequentially accumulated in the air tank 1 through the pipe 8. When the compressed air in the air tank 1 reaches a predetermined pressure, the sensing unloader 26 acts and the rod 29a of the operating unloader 29 is pushed up as shown by the imaginary line in FIG. 12, the throttle rod 311 is lowered and the engine 3 is in an idling state. At the same time, the rod 36a of the operating unloader 36 pushes the valve plate 713 to stop the compression operation of the compressor 7.

In the above embodiment, after the pipe is driven into the soil to a predetermined depth, the operating valve is opened to blow the compressed air in the air tank into the soil from the fumarole, and almost at the same time, the automatic extraction mechanism is activated to remove the pipe. At the same time, the operation of the operating valve and the automatic extraction mechanism are linked to pull out the pipe from the soil. The pumping capacity of the compressor is set so that the extraction of
Even if the compressor has a large pressure-feeding capacity and the pressure in the air tank is accumulated to a predetermined set pressure before the pipe is completely pulled out, the automatic response mechanism and automatic control mechanism of the present invention can be configured to interlock and connect. Then,
The engine will maintain high speed rotation until the soil improvement machine body reaches the lower end to the upper end, and regardless of the capacity of the compressor, the engine will be maintained at high speed during pipe insertion and removal. Both tasks can be performed efficiently without stalling the engine.

[Effects of the Invention] As explained above, the air soil improvement machine according to the present invention can easily perform the work of driving in and pulling out the fumarole pipe with less power, and the air pressure in the air tank can be applied to the soil improvement machine body. An automatic control mechanism is provided that detects and automatically sets the engine to idling when the air pressure reaches a predetermined set pressure, thereby eliminating unnecessary high-speed rotation of the engine and improving fuel efficiency.

In addition, an automatic response mechanism is provided between the soil improvement machine body and the frame body, which is activated by the downward movement of the soil improvement machine body relative to the frame body, and this automatic response mechanism and automatic control mechanism are interlocked and connected. The engine was kept at high speed while the Tomotsu soil improvement machine was descending, so
The soil in the field where trees, crops, and other plants are planted is hard, and it takes a relatively long time for the automatic driving mechanism to drive the pipe into the soil to a predetermined depth. Even if the pressure is accumulated to a predetermined set pressure, the engine does not go into an idling low-output state, but maintains a high-speed rotation and high-output state, and the pipe can be inserted smoothly without stalling. Furthermore, even if the air pressure in the air tank has accumulated to a predetermined pressure and the engine is in an idling state before the start of pipe driving, when the soil improving machine body begins its downward movement relative to the frame body, the engine will be at high speed. The output state is automatically maintained, allowing smooth pipe driving and efficient deep plowing work.

[Brief explanation of the drawing]

Figure 1 is an overall side view of the pneumatic soil improvement machine, Figure 2
The figure is a cross-sectional plan view taken along the line X ₁ - X ₁ in Figure 1.
The figure is a cross-sectional side view taken along the line X ₃ - X ₃ of Figure 2.
The figure is a cross-sectional rear view taken along the line X ₄ - X ₄ of Figure 2.
The figure is an exploded perspective view of a part of the operating mechanism.
The figure is a side view of the external appearance of Fig. 3 partially shown in cross section, Fig. 7 is a sectional plan view along the line _X5 - _X5 of Fig. 6, and Fig. 8 is a partially cross-sectional view of Fig. 7 Figure 9 is a side view from the _Y1 arrow in the figure, and Figure 9 is a partial cross-sectional view of Figure 8.
Y ₂ arrow view rear view, Figure 10 is a sectional side view taken along the line X _{6 -} Side view of the air tank part in the automatic control mechanism, No. 13
The figure is a cross-sectional plan view taken along the line _X2 - _X2 of Figure 1.
Figure 4 is a configuration diagram of the carburetor part in the automatic control mechanism, Figure 15 is a side view showing the soil improvement machine body reaching the lower end with respect to the frame body, and Figures 16 and 17 are diagrams of the automatic response mechanism. This is a rear view illustrating the operation of the main parts, and Fig. 17 is a _Y3 arrow view in the state shown in Fig. 15, and Fig. 16 shows the state halfway between Fig. 9 and Fig. 17. FIG. A... Soil improvement machine body, Aa... Automatic driving mechanism, Ab
...Automatic control mechanism, B...Frame body, C...Automatic extraction mechanism, D...Automatic response mechanism, Δl...Eccentricity, 1...
Air tank, 1a...Joint, 1b...Mounting frame, 1c
...Mounting seat, 1d...Communication seat, 2...Mounting base, 3...
Engine, 300... Carburetor, 310... Carburetor body, 311... Throttle rod, 311a... Flange, 312... Mounting plate, 313... Nut, 314...
Swinging tool, 315...pin, 316...universal joint, 4...
Reducer, 5... Drive shaft, 6... Drive pulley, 7... Compressor, 710... Cylinder, 711... Packing, 71
2...Seat plate, 712a...Intake port, 713...Valve plate, 7
14... Screw, 715... Cylinder head, 715a
...Partition wall, 716...Suction chamber, 717...Discharge chamber, 71
8...Air filter, 719...Joint, 720...Safety valve, 721...Protector, 8...Pipe, 9...Operation valve, 910...Valve housing, 911...Valve body, 912...Valve shaft, 913...Valve lever, 914...Short shaft, 915...
Arm, 915a...Long hole, 915b...Engagement hole, 9
16... Spring, 917... Support shaft, 918... Pedal, 10... Inner pipe, 100... Flange,
101... Inner pipe body, 11... Stroke tube,
11a... Cylindrical body, 11b... Blowing prevention plate, 11c... Locking piece, 11d... Gear housing, 110... Lid body, 12... Outer pipe, 120... Receiving body, 121... Outer pipe body, 13... Buffer body, 14... Nozzle , 14a...
Fumarole port, 15...Cylinder case, 16...Input shaft, 17...
Input pulley, 18, 19... Bevel gear, 20... Cam shaft, 20a... Eccentric cam, 210... Cam surface, 21
...V belt, 22...Tension mechanism, 23...Transmission cover, 24...Elevating body, 240...Elevating frame, 241
... Bolt, 242 ... Lifting shaft, 243 ... Roller, 2
5... Pedal guide, 26... Sensing unloader, 26
a...rod, 26b...pick, 27...tube, 2
8...Three-way joint, 29...Operation unloader, 29a...
Rod, 30... Extension tube, 31... Metal fitting, 32
... Thin rod, 33, 34... Locking tool, 35... Chain, 3
6... Operating unloader, 36a... Rod, 37... Relay tube, 38... Guide rail, 38a... Passage, 38b... Window hole, 39... Handle, 40... Stand, 41... Horizontal frame, 42... Grounding frame, 43... Reinforcement plate , 44... Axle bearing, 45... Axle, 46... Single wheel, 47... Footrest, 48... Fall prevention mechanism, 480
...Bracket, 481...Pivot, 482...Lever,
483... Boss tool, 484... Regulating tool, 485... Weight receiving tool, 485a... Weight receiving part, 485b... Oblique side part, 48
6...Protective tube, 487...Grip, 488...Spring, 489...Latching rod, 49...Band hook, 4
9a... Disc, 50... Stay, 51... Guide rod, 52... Plywood, 53... Screw, 54... Reduction gear case, 54a... Mounting seat, 55... Reduction mechanism, 56
... Output shaft, 56a... Spline part, 57... Winding bobbin, 570... Clutch pawl, 570a... Recessed angle engagement surface, 571... Sleeve, 58... Bearing, 5
9...Dock clutch, 590...Clutch claw, 59
0a... Advance angle engagement surface, 591... Circumferential groove, 60... Spring, 61... Boot, 62... Actuation mechanism, 620... Support, 621... Screw, 622... Linking tool, 622a
...One end part, 622b... Intermediate cylinder part, 622c... Other end part, 623... Mounting shaft, 624... Actuation tool, 624a
...Shifter, 624b...Cylinder shaft part, 624c...Engagement arm, 624d...Mounting boss part, 625...Pivot shaft,
626... Lock bolt, 627... Guide rod, 63
... Hanging tool, 64... Rivet, 65... Screw, 66...
Response tool, 66a...one side, 66b...arc side, 66
c... Rotation regulating stopper, 66d... Other side, 66e
...Boss portion, 67... Support shaft, 68... Interval, 69... Coiled spring, 69a... One end, 69b... Coiled portion, 69c... Other end, 70... Rising end side protrusion, 70a... Oblique bottom surface,
71... Lower end side protrusion, 71a... Upper surface of oblique side.

Claims (1)

[Claims] 1. 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 air tank via an operating valve and is vertically disposed from the bottom of the air tank and has a jet at the tip. A soil improving machine main body is composed of a pipe having a mouth and an automatic driving mechanism that drives the pipe into the soil using the engine as a power source, and this main body, a frame main body that supports the main body so as to be movable up and down, and the above-mentioned The soil improvement machine is equipped with an automatic extraction mechanism that pulls out a pipe driven into the soil while lifting the soil improvement machine body with respect to the frame body using the engine as a power source. An automatic control mechanism is provided that detects air pressure and automatically adjusts the engine to an idling state when the air pressure reaches a predetermined pressure.Furthermore, the pipe is inserted between the soil improving machine body and the frame body by an automatic driving mechanism. An automatic response mechanism is provided which is activated by the downward movement of the soil improvement machine body as it descends along the frame body while being driven into the soil, and the automatic response mechanism and the automatic control mechanism are interlocked and connected, and at least A pneumatic soil improving machine characterized in that the engine is maintained at high speed rotation while the soil improving machine body is moving downward.