JPH0452084B2 - - Google Patents

Description

[Detailed Description of the Invention] [Field of Industrial Application] The present invention involves driving a pipe having a fumarole at its tip into a clay pot, and blowing compressed air from the fumarole in that state to create cracks in the deep layers of the clay pot. The present invention relates to a pneumatic soil improvement machine that not only allows deep plowing to be carried out easily, but also supplies air, that is, oxygen, to the roots of plants such as trees and crops, and promotes the activation of plants.

[Conventional technology]

As such a pneumatic soil improvement machine, the present applicant has developed an engine, a compressor driven by the engine, and a compressor that performs compression by the compressor, as disclosed in, for example, Japanese Patent Laid-Open No. 58-98003. An air tank that stores pressurized air, a pipe that communicates with the air tank via an operating valve and hangs down from the bottom of the air tank and has a blowhole at its tip, and an automatic machine that drives the pipe into the soil using the engine as a power source. The driving mechanism constitutes a soil improvement machine main body, and this main body, a frame body that supports the main body so as to be able to rise and fall, and the soil improvement machine body that is lifted into the soil with respect to the frame body using an engine as a power source. The present invention proposes a system that is equipped with an automatic pulling mechanism that pulls out pipes that have been driven into the pipe, and that allows the work of driving and pulling out pipes to be performed easily and efficiently with little effort.

In this pneumatic soil improvement machine, after driving the pipe into the soil to a predetermined depth, the operation is opened and the compressed air in the air tank is blown out from the nozzle, and at the same time, the automatic extraction mechanism is activated to pull the pipe into the soil. I'm trying to pull it out more.

[Technical problem of the invention]

However, soil in fields where trees, crops, and other plants are cultivated has different soil conditions, such as hardness and softness. Even if compressed air is blown into the soil from the fumarole, if the soil is hard, cracks may occur in a narrow area and may not be plowed deeply enough. For this reason, after blowing compressed air from the fumarole, the operation valve is closed without immediately pulling out the pipe from the soil, and the compressed air is accumulated in the air tank to a predetermined pressure. When the operation valve is opened again,
There is a need for a technology that allows the pipe to be pulled out of the soil at the same time as re-aeration to expand the deep plowing area.

[Purpose of the invention]

Therefore, in view of the above circumstances, the present invention has the advantage of being able to start pulling out the pump from the clay pot almost at the same time as the compressed air is blown from the nozzle port, as in the case of the conventional method, or, if necessary, to start pulling out the pump from the clay pot while the pipe is still inserted into the clay pot. To provide a pneumatic soil improvement machine that is capable of emitting fumes twice or more times at a location, expanding the deep plowing range, and also making it possible to pull out the pipe from the soil almost at the same time as the required number of re-fumes is completed. This is what I am trying to do.

[Structure of the invention]

In order to achieve this object, the present invention provides a valve operating mechanism that opens and closes a control valve and an operating mechanism that intermittently operates engine power to an automatic extraction mechanism, in a state in which both mechanisms are interlocked and in a state in which the interlocking is released. When the valve operating mechanism and the operating mechanism are interlocked, the pipe starts to be pulled out almost at the same time as the evacuation, and when the interlocking of both mechanisms is released, only evacuation is performed. It is characterized by being configured as follows.

〔Example〕

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

In the figure, symbol A is the soil improvement machine body, Aa is the valve operating mechanism, Ab is the automatic driving mechanism, Ac is the automatic control mechanism, B is the frame body, C is the automatic pulling mechanism, and D
indicates an automatic response mechanism, and E indicates an interlocking operation 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. 17, 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 16, the compressor 7 includes a cylinder 710, a packing 711, a seat plate 712, and a cylinder head 715. A valve plate 713 is 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.

The valve operating mechanism Aa is configured as follows. 3 and 6 on the bottom of the air tank 1.
As shown in the figure, an operating valve 9 is provided, and this operating valve 9 accommodates a valve body 911 in a valve housing 910, and this valve body 911 has a valve shaft 912, a valve lever 913, a short shaft 914, and an arm 915. Through the long hole 915a,
It is linked to an arm 915 that is pivotally supported by a support shaft 917. A spring 916 is tensioned between the tip of the arm 915 and a locking piece 11c provided on the stroke cylinder 11, which will be described later, and a pedal 918 is attached to the base end of the arm 915. The pedal 918 is normally supported obliquely upward as shown in FIGS. 1 and 6. In this state, the operating valve 9 is closed. When the pedal 918 is depressed, the operating valve 9 closes. is becoming more open.

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
10, and a flange provided at the upper end of the stroke cylinder 11 is fitted to the lower surface of this flange 100, and is integrally connected to the valve housing 910 and fixed to the air tank together with the stroke cylinder 11. The stroke cylinder 11 has a cylindrical body 11a, and has a brim-shaped blowout prevention plate 11b formed at the lower end thereof, and the locking piece 11c is integrally formed with this blowout prevention plate 11b.
is formed. In addition, an automatic driving mechanism is provided on one side of the upper part of the stroke cylinder 11 as shown in FIG.
A gear housing 11d constituting Ab is formed,
A lid 110 is fitted to the outer circumference of the stroke cylinder 11 facing the gear housing 11d. An upper part of an outer pipe body 121 of an outer pipe 12 is inserted downward from a substantially intermediate position in the length direction of the inner pipe 10 so as to be vertically movable, and the outer pipe 12 is suspended longer than the lower end of the inner pipe 10. A sharp nozzle 14 is attached to the tip of the nozzle 14, and a plurality of blowholes 14a are opened in the circumferential direction slightly above the sharp end of the nozzle 14.

The automatic driving mechanism Ab 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 does not strike the receiving body 120 when the lower surface thereof is in contact with the buffer 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. 10 and 11 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 Ac is configured as follows. As shown in FIG. 15, 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 29 screwed onto the mounting frame 1b of the
is connected to. The operation unloader 29 is provided with a rod 29a that can move up and down.
A thin rod 32 is slidably inserted into a metal fitting 31 attached to the metal fitting 31, 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 the narrow rods 35 are connected to each other, and the upper ends of the narrow rods 32 are inserted into and supported by the universal joint 316 of the carburetor 300 via the adjuster part, as shown in FIG. There is.
A relay tube 37 is connected to the communication seat portion 1d that communicates with the three-way joint 28, and this tube 37
It communicates with an operating unloader 36 provided in the compressor 7 shown in FIG. 16, and this operating unloader 36 and tube 37 are protected by a protector 721. Further, the actuating unloader 36 is provided with a rod 36a that is actuated by air pressure, and is adapted to open and close the valve plate 713.

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 lower knob 26b and pulling the rod 26a, it is possible to manually test the operation of the automatic control mechanism Ac as needed.

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 air compression is not performed even if the piton of the compressor 7 is reciprocating. When the air pressure in the air tank 1 decreases, a spring (not shown) in the operating unloader 36 releases the rod 6a.
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 fed from the cylinder 710 to the air tank 1 side.

The operation unloader 29 is operated by the air pressure in the air tank 1, which is also provided via the sensing unloader 26, and when the air pressure in the air tank 1 exceeds a set pressure, the rod is unloaded against a spring (not shown) installed inside. 29a advances in the projecting direction, and when the air pressure decreases, the spring causes the spring to return to the advanced position 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 FIGS. 1, 10, and 11, a guide rail 38 having a channel-like cross section is formed, and each roller 243 of the elevating body 24 is accommodated in a passage 38a of this guide rail 38.
The elevating body 24 is designed to move up and down. The guide rail 38 is also provided with a handle 39, a stand 40, horizontal frames 41, 41, a grounding frame 42, a reinforcing plate 43, etc., and furthermore, on the opposite side from the grounding frame 42, a pair of axle holders 44, an axle A single wheel 46 is pivotally supported via a wheel 45, and a footrest 47 is provided on one side of the axle bearing 44. Furthermore, a fall prevention mechanism 48 is provided on the upper part of the guide rail 38, as shown in FIG. This fall prevention mechanism 48 has a pivot 481 inserted through a bracket 480 to pivotally support a boss tool 483 that is integrally provided at the lower end of a lever 482, and has a regulation on the lower side of the boss tool 483 to restrict its movement. A tool 484 is provided. In addition, the lever 482 and the guide rail 38
A spring 488 is tensioned between the locking rod 489 and a locking rod 489 projecting from the outside. Furthermore, the lever 48
2, there is a window hole 3 in the guide rail 38.
A weight receiver 485 is provided so as to protrude from 8b, and this weight receiver 485 is provided with a weight receiver 485a for receiving the roller 243 of the elevating body 24,
Further, the lower surface of the weight receiver 485 forms an oblique side portion 485b. The middle part of the lever 482 is bent in a dogleg shape, and the part of this bent part facing 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.
An abutment plate 52 is fixed to the 0 with screws 53. Next, on the soil improvement machine main body A side, reference numeral 54 is a reduction gear case, and a reduction gear mechanism 55 is installed inside this reduction gear case 54. As shown in FIGS. 2 and 4, the speed reduction mechanism 55 includes a wave generator mounted on the end of the input shaft 16,
A fixed-side circular spline is provided in the reducer case 54, a rotating-side circular spline is attached to a holding member integrated with the output shaft 56, and a flex wire is installed between the wave generator and the fixed-side and rotating-side circular splines. It has a spline structure. Further, a spline portion 56a is formed on the output shaft 56, and a winding bobbin 57 is mounted on a bearing 58 in front of the spline portion 56a.
The retracted engagement surface 570a (the fourth
The dog clutch 59, which has an advanced engagement surface 590a of the clutch pawl 590 that engages and disengages with the spline portion 56a, is slidably inserted into the spline portion 56a, and the dog clutch 59 is slidably inserted into the spline portion 56a. In between, take up the clutch 59 and the winding bobbin 5.
A spring 60 is interposed to urge the sleeve 57 away from the sleeve 571, and the outside thereof is covered by a boot 61 fitted into the sleeve 571.

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 portion 54a of the reducer case 54 with screws 621, and this support 620 has an engaging portion 622a at one end, an intermediate cylindrical portion 622b, and an engaging portion 6 at the other end.
22c is pivotally supported via a mounting shaft 623, and an actuator 624 is mounted on the pivot shaft 62c.
It is pivoted via 5. This actuator 624 is provided with a shifter 624a, a cylinder shaft portion 624b, an engagement arm 624c, a mounting boss portion 624d, and the like. In addition, the mounting boss portion 624d of the actuating tool 624
is provided with a pair of lock bolts 626, and the operating tool 624 and the pivot shaft 625 are integrally constructed. One end engaging portion 622a of the connecting tool 622
is connected to an interlocking operation mechanism E to be described later, and the other end engaging portion 622c faces an engaging arm 624c so as to be engageable, and the shifter 624a engages with a circumferential groove 591 of the dog clutch 59,
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. 11, the band hook 4
The other end of the belt-shaped hanging tool 63, which has one end wound around the winding bobbin 57 and is 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 spirally wound around the outer periphery of 57.

The automatic response mechanism D is configured as follows. Figures 12, 13, 19 and 2
As shown in FIG. 0, 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 66a.
6e, etc., and the boss portion 66e is connected to the support shaft 67 and the intermediate cylinder 6.
8. It is pivotally supported on the elevating body 24 via a flat washer 70 and a nut 71. A winding part 69b is wound around the outer periphery of the boss part 66e, and one end 69a is connected to one side part 66a.
and the other end 69c is locked to the elevating body 24,
A coil spring 69 is provided that normally biases the rotation restriction stopper 66c toward the side that contacts the elevating body 24. Further, the chain 3 is provided at the tip of the other side portion 66d.
5 are connected to each other, and this chain 35 is
When the rotation regulating stopper 66c is in contact with the elevating body 24, it is tensed and pulls the narrow rod 32. When the rotation regulating stopper 66c is not in contact with the elevating body 24, as shown in FIG. 12, it is loosened and the narrow rod 32 is pulled. It is designed not to be stretched. On the other hand, the side edge of the guide rail 38 facing the response tool 66 is located at the uppermost support position where the elevating body 24 rises along the guide rail 38, that is, the position where the roller 243 is supported by the weight receiver 485 (the A rising end side protrusion 72 is provided at the position shown in FIGS. 1 and 12), and a descending end side protrusion 73 is provided at the position where the elevating body 24 has descended and reached the lowest position (FIGS. 18 and 20). are provided, and come into contact with the response tool 66 at each position. Both protrusions 7
2, 73 has a lower oblique side 72a and an upper oblique side 73a.
are provided to facilitate contact and separation with the response tool 66.

The interlocking operation mechanism E is configured as follows. As shown in FIGS. 7 to 9, this slot 915 is inserted into the slot 915b provided in the arm 915.
A sliding rod 74 having a length slightly shorter than b is provided so as to be slidable via a pair of left and right support truncated conical disks 75, 75 and a fixture 76. This sliding rod 74 includes an upright portion 74a at one end on the side of the pedal 918, a rod portion 74b,
The other end has a folded-back part 74c, and the one end upright part 74a engages with a notch 918a formed in the pedal 918,
The upper end thereof projects upward from the upper surface of the pedal 918 to form a pressing plate 740 . A spring 78 is tensioned between a spring hook 919 provided on the arm 915 and a spring hook 77 provided on the sliding rod 74, and normally draws the sliding rod 74 toward the pedal 918 side. Further, the engagement plate 741 formed on the other end folded portion 74c has its engagement edge 741a positioned so as to be able to engage with and disengage from the one end engagement portion 622a of the linking tool 622, and the engagement plate 741 is normally One end is engaged with the engaging portion 622a, and when the sliding rod 74 is moved against the spring 78 via the pressing plate 740, the one end is disengaged from the engaging portion 622a. Note that the reference numeral 741b indicates that when the pedal 918 is depressed with the engagement with the linking tool 622 released,
This is a restricting edge to prevent the one end engaging portion 622a of the connecting member 622 from entering the upper part of the engaging plate 741.

Next, the operation of the pneumatic soil improving 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 Push the soil conditioner. 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. 14), 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 59, and the response tool 66 is in contact with the rising end protrusion 72. 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 bearing part 485a of Nozzle 1, the soil improving machine main body A slightly descends with respect to the frame main body B due to its own weight, and the nozzle 1
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 Ab operates for sliding action with the inner pipe 10, 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 rising end side protrusion 72 and holding the chain 35 in a loosened state, as shown in FIG. As a result of the contact with the body 72 being released, the rotation regulating stopper 6 rotates around the support shaft 67 due to the action of the coil spring 69 as shown in FIG.
6c rotates until it comes into contact with the elevating body 24 and pulls the chain 35, and the narrow rod 22 is pulled to project the throttle rod 31 and maintain the engine 3 at high speed and high output. Therefore, while the soil improvement machine main body A is descending, the automatic driving mechanism Ab 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 first
As shown in FIG. 8, 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 73 and rotates as shown in FIG. 20, and the chain 35 loosens and the engine 3 is maintained at a low power output in an idling state.

In addition, 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 Ac, so the automatic response mechanism D is maintained. Even when the engine 3 is activated, the engine 3 continues to rotate at high speed, and furthermore, when the soil improving machine main body A starts to descend, the compressed air in the air tank 1 has reached a predetermined pressure.
Even when the engine 3 is maintained at low output in an idling state by the automatic control mechanism Ac, the automatic response mechanism D causes the engine 3 to rotate at high speed and output 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 the blowhole 14a of the nozzle 14 provided at the tip of the outer pipe 12.
This fumarole causes cracks in the soil around the fumarole port 14a and plows it deeply, and at the same time as this fume, the actuating tool 622
Since the two rotate together, the dog clutch 59 moves toward the take-up bobbin 57 against the force of the spring 60, and the clutch pawls 570 and 590 engage with each other. For this reason,
The driving force of the engine 3 is transmitted from the output shaft 56 through the dog clutch 59 to the take-up bobbin 57, and the lifting tool 67 is wound onto the take-up bobbin 57, so that the soil improving machine body A rises relative to the frame body B. start.
As the soil improvement machine main body A rises, the contact between the descending end side protrusion 73 and the reaction tool 66 is released, and the engine 3
rotates at high speed, and the receiver 120 is supported by the stroke tube 11 via the buffer 13, and the outer pipe 12 driven into the clay 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 lifting speed at the initial stage of pulling out, which requires the greatest force to pull out the engine 2, is slow, there is less burden on the engine 3 and the drive power transmission system.

If the soil to be aerated is hard and the desired deep plowing cannot be achieved with a single blow, the sliding rod 74 can be moved by pressing the pressing plate 740 forward against the spring 78 when depressing the pedal 918. Slot hole 915
b, and the engagement between the engagement plate 741 and the engagement portion 622a at one end of the connecting tool 622 is released, and when the pedal 918 is depressed in this state, the valve body 91
1 opens and fumes are emitted. At this time, the connecting tool 62
2 does not operate, automatic extraction mechanism C does not operate,
The outer pipe 12 is not pulled out. pedal 918
When the arm 915 is released, the valve body 911 is closed, and the compressed air is accumulated in the air tank 1 to a predetermined pressure.If the above operation is repeated again, two valves will be placed in the same place. It is possible to perform fumes more than once, expand the deep plowing range, and perform the desired deep plowing work. When the pressure on the pressing plate 74 is released, the sliding rod 74 moves toward the pedal 918 by the action of the spring 78, resulting in the state shown in FIG. However, as described above, substantially simultaneously with the depression of the pedal 918, the automatic extraction mechanism C operates and the outer pipe 12 is pulled out.

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 loads the load receiving tool 485 from below.
Pushing the oblique side 485b against the spring 488, the weight receiver 485 is pulled out of the guide rail 38 and reaches above it. When the soil improvement machine main body A rises to the upper limit, the colliding plywood 52 and the engagement arm 62
4c, the dock clutch 59 is moved in the direction away from the take-up bobbin 57 via the shifter 624a, thereby disengaging the clutch pawls 570 and 590, and bringing the clutch 59 into 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 receiving part 48 of the weight receiving tool 485
5a re-enters with the restoring force of spring 488,
The soil improvement machine body A will descend slightly to this position due to its own weight, but the weight support device 48 will prevent it from descending from here.
5, and the soil improvement machine main body A is held at the stop position. Further, the response tool 66 includes the rising end side protrusion 7
2, the engine 3 enters 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. 15, 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, the engaging body of the sliding rod in the interlocking operation mechanism is slid with the foot to interlock and release the interlocking between the valve operation mechanism and the operating mechanism of the automatic withdrawal mechanism. A grip lever may be provided on the lever, and the lever and the engaging body may be interlocked and connected by a control wire, and the engaging body may be slid by the lever.

Further, in the above embodiment, the hardness or softness of the clay can be intuitively determined based on the time required for driving by the automatic driving mechanism, and the number of times of blowing can be determined.

〔Effect of the invention〕

As explained above, the air soil improving machine according to the present invention can easily perform the work of driving in and pulling out the fumarole pipe with less power, and can easily perform deep plowing work.

and a valve operating mechanism that opens and closes the operating valve;
The operating mechanism that connects and disconnects the engine power to the automatic extraction mechanism is linked by an interlocking operation mechanism that can operate in a state in which both mechanisms are interlocked and in a state in which the interlocking is released, so that the valve operating mechanism and the operating mechanism are interlocked. Under such conditions, the pipe is driven into the soil to a predetermined depth, the operating valve is opened, and the compressed air in the air tank is blown out from the fumarole, and the automatic extraction mechanism is activated almost at the same time to pull the pipe out of the soil. Capable of deep plowing work. In addition, when the linkage between the valve operating mechanism and the operating mechanism is released, only blowing occurs and the automatic extraction mechanism does not operate. It is possible to perform fumarole multiple times without changing the soil, and the desired deep plowing work can be carried out even when the soil is hard.

Furthermore, since the valve operating mechanism and the interlocking operating mechanism can be integrally formed, there are excellent effects such as the simplification of the mechanism and improved operability.

[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 an external side view of Fig. 3 with a part cut away, Fig. 7 is an enlarged side view of the main parts of the valve operating mechanism and interlocking operation mechanism, and Fig. 8 is taken along the line X ₆ - X ₆ of Fig. 7. 9 is a cross-sectional rear view taken along the line _X7 - _X7 of FIG. 7, FIG. 10 is a cross-sectional plan view taken along the line _X5 - _X5 of FIG. FIG _{. 12 is a rear view as viewed from the Y 2 arrow} in FIG. 11, showing a part in cross section, and FIG.
2 is a sectional side view taken along the line X _{8 -} Figure 16 is a cross-sectional plan view taken along the line X _{2 -} 19 and 20 are rear views illustrating the operation of the main parts of the automatic response mechanism,
FIG. 20 is a view taken along the _Y3 arrow in the state shown in FIG. 18, and FIG. 19 is a rear view showing the state halfway between FIG. 12 and FIG. 20. A... Soil improvement machine body, Aa... Valve operation mechanism,
Ab...Automatic driving mechanism, Ac...Automatic control mechanism, B
...Frame body, C...Automatic extraction mechanism, D...
Automatic response mechanism, E... Interlocking operation 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... Rocking tool, 3
15... Pin, 316... Universal joint, 4... Reducer, 5... Drive shaft, 6... Drive pulley, 7... Compressor, 710... Cylinder, 711... Packing, 712... Seat plate , 712a...intake port, 71
3... Valve plate, 714... Screw, 715... Cylinder head, 715a... Partition wall, 716... Suction chamber, 717... Discharge chamber, 718... Air filter, 719... Joint, 720... Safety valve, 721
...Protector, 8...Pipe, 9...Operation valve,
910... Valve housing, 911... Valve body, 912... Valve stem, 913... Valve lever, 914... Short shaft, 91
5... Arm, 915a... Long hole, 915b...
Slot hole, 916...Spring, 917...Support shaft, 918...Pedal, 918a...Notch, 91
9... Spring hook, 10... Inner pipe, 100
...Flange, 101 ...Inner pipe body, 11
...Stroke tube, 11a...Cylinder body, 11b...
Blowout prevention plate, 11c...locking piece, 11d...gear housing, 110...lid body, 12...outer pipe, 1
20...Receiver body, 121...Outer pipe body, 1
3... Buffer, 14... Nozzle, 14a... Fumarole, 15... Cylinder case, 16... Input shaft, 17...
...Input pulley, 18, 19...Bevel gear, 20
... Camshaft, 20a ... Eccentric cam, 210 ... Cam surface, 21 ... V-belt, 22 ... Tension mechanism, 23 ... Transmission cover, 24 ... Lifting body, 24
0... Lifting frame, 241... Bolt, 242... Lifting shaft, 243... Roller, 25... Pedal guide, 26... Sensing unloader, 26a... Rod, 26b... Knob, 27... Tube, 28 …
...Three-way joint, 29...Operation unloader, 29a...
... Rod, 30 ... Extension tube, 31 ... Metal fitting, 32 ... Thin rod, 33, 34 ... Locking tool, 35
...Chain, 36...Operation unloader, 36a...
... Rod, 37 ... Relay tube, 38 ... Guide rail, 38a ... Passage, 38b ... Window hole, 3
9...Handle, 40...Stand, 41...Horizontal frame, 42...Grounding frame, 43...Reinforcement plate, 44...
Axle bearing, 45...Axle, 46...Single wheel, 4
7... Footrest, 48... Fall prevention mechanism, 480...
... Bracket, 481 ... Pivot, 482 ... Lever, 483 ... Boss tool, 484 ... Limiting tool, 48
5... Weight receiver, 485a... Weight receiver, 485b...
...Hytenuse part, 486...Protection tube, 487...
Grip, 488...spring, 489...locking rod, 49...band hook, 49a...disk,
50... Stay, 51... Guide rod, 52... Collision plate, 53... Screw, 54... Reducer case, 5
4a...Mounting seat, 55...Deceleration mechanism, 56...
Output shaft, 56a... Spline portion, 57... Winding bobbin, 570... Clutch pawl, 570a... Recessed engagement surface, 571... Sleeve, 58... Bearing, 59... Dog clutch, 590... Clutch Claw, 590a...Advanced engagement surface, 591...
... Circumferential groove, 60 ... Spring, 61 ... Boot, 62
. . . Operating mechanism, 620 . Shaft, 624... Actuation tool, 6
24a...Shifter, 624b...Cylinder shaft portion, 624
c...Engagement arm, 624d...Mounting boss part, 6
25... Pivot shaft, 626... Lock bolt, 62
7... Guide rod, 63... Hanging tool, 64... Rivet, 65... Screw, 66... Response tool, 66a...
...One side, 66b...Circular side, 66c...Rotation regulating stopper, 66d...Other side, 66e...Boss, 67...Spindle, 68...Cylinder, 69...Circular spring, 69a ...One end, 69b... Winding part, 69c...
...Other end, 70...Taira Watsusha, 71...Natsuto,
72...Rising end side protrusion, 72a...Lower surface of oblique side,
73... Lowering end side protrusion, 73a... Upper surface of oblique side,
74...Sliding rod, 74a...One end standing portion, 74b
...Role part, 74c...Other end folded part, 740...
Pressing plate, 741... Engagement plate, 741a... Engagement edge, 714b... Regulation edge, 75... Support conical truncated plate, 76... Fixture, 77... Spring hook, 78...
...Spring.

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 A valve operation mechanism that opens and closes the operation valve, comprising an automatic extraction mechanism that pulls out a pipe driven into the soil while raising the soil improving machine body relative to the frame body using the engine as a power source. The valve operating mechanism and the operating mechanism that intermittently operate the engine power to the automatic withdrawal mechanism are linked by an interlocking operating mechanism that can operate in a state in which both mechanisms are linked and in a state in which they are released from the linkage, and the valve operating mechanism and the operating mechanism are linked. The pneumatic soil improving machine is characterized in that when the two mechanisms are linked, the pipe starts to be pulled out almost at the same time as the fume is produced, and when the two mechanisms are disengaged, only the fume is produced.