JPH0545201B2 - - Google Patents

Description

[Detailed description of the invention] [Industrial application field]

The present invention relates to a pneumatic soil improvement machine that deeply plows the soil by driving a fumarole tube having a fumarole at its tip into the soil pot and blowing out compressed air from the fumarole.

[Prior art]

As a pneumatic soil improving machine, the present applicant has proposed, for example, in Japanese Patent Application Laid-Open No. 126702/1983, an engine and a compressor driven by the engine are fixed to the side of a support having running wheels, and the compressor is driven by the engine. An air tank that stores pressurized air is supported on the pillar so as to be movable up and down, a fumarole pipe communicating with the inside of the air tank via an operating valve is suspended from the bottom of the air tank, and a fumarole hole is provided at the tip of the fumarole pipe. , this fumarole pipe,
A driving mechanism for driving the blowhole into the pot using the engine as a drive source, and a pulling mechanism for pulling out the fume pipe from the pot after blowing are provided, and a handle is provided on the upper part of the fuselage on the side opposite to the side on which the fume tube moves up and down. I am proposing what I have set up. In this conventional soil improvement machine, heavy components such as the engine, compressor, and air tank are installed at the top of the support, so the center of gravity of the machine is at the top, making it unstable and difficult to use when working on slopes. Even during normal movement, a considerable amount of force was required, which caused problems in handling. In addition, when moving, the machine is tilted and the weight of the engine on the top is supported by the worker, so the capacity of the engine and compressor cannot be increased too much, so although it is good as a lightweight and small machine, it is necessary to increase efficiency. Furthermore, since the operator works from the handle side, it is difficult to check the vertical movement of the fumarole pipe.

[Technical problem of the invention]

By the way, while the above-mentioned soil improving machine has the feature of being suitable for relatively small-scale use such as working between crop rows or inside greenhouses, it has the problem of not being able to increase efficiency as mentioned above. Even if attempts are made to increase the capacity of the engine, compressor, etc., the capacity of the air tank, etc. in order to improve work performance, the conventional configuration described above naturally has its limits, and it is difficult for workers to check the work status. There is also a type in which the compressor is a stationary type and is connected to an air tank with a blowhole pipe using a longer hose, but the workability is poor, so we improved the airframe configuration of the type described in JP-A-58-126702 mentioned above. I needed to.

[Purpose of the invention]

The present invention has been developed in consideration of the above circumstances, and improves the performance of the engine, compressor, etc., and increases the capacity of the air tank, etc. to improve work performance, making it possible to perform work in furrows and in narrow spaces as in the past. In addition to making it possible to work on slopes or inside greenhouses, the work situation can be clearly seen by the worker, it is easy to switch between the work state and the moving state, and it is easy to operate. Another object of the present invention is to provide a pneumatic soil improvement machine that can reduce the pulling power by simply lifting the handle slightly upward.

[Structure of the invention]

In order to achieve the purpose, the pneumatic soil improvement machine of the present invention includes a guide frame that is pivotally supported by a frame and extends vertically in a grounded state, and a guide frame that is provided on the frame and located at the lower front side of the guide frame. a wheel, a mounting table located directly above the running wheel, an engine and a compressor mounted on the mounting table, a grounding frame provided on the frame and located at the lower rear side of the guide frame; The air tank includes a handle located diagonally upward on the rear side of the guide frame, an air tank mounted on the upper rear side of the guide frame so as to be movable up and down, and a blow pipe hanging down from the bottom of the air tank, and the air tank is connected to the engine. It is characterized in that it moves up and down along the guide frame using a power source as a power source.

【Example】

Embodiments of the present invention will be described below with reference to the drawings. In FIGS. 1 and 2, reference numeral 1 is a platform for a pneumatic soil improving machine. An engine 2 is mounted on the front of the platform 1, which has a relatively low ground clearance, and a compressor 3 is mounted on the rear. It is installed. A belt 4 is wound between the output pulley 2a of the engine 2 and the input pulley 3a of the compressor 3, and the belt 4 is provided with a tension clutch 4a. Further, a speed reducer 5 is provided on the side of the compressor 3 and receives power from the engine 2. At the rear of the mounting table 1, there is a pair of left and right frames 6 that are inclined so that the front is low in the direction of movement and the rear is high.
is connected to the frame 6, and between the brackets 7, which protrude forward from the tip of the frame 6, there is a bracket 7, which is located below the mounting table 1 and is used for running a single wheel that receives the load of the engine 2, compressor 3, etc. A wheel 8 is supported via an axle 9. The lower end of the frame 6 extends to the periphery of the fumarole pipe, which will be described later, to form an almost horizontal loop-shaped grounding frame 10, and the upper part of the frame 6 extends rearward and diagonally upward from the mounting table 1 to handle a handle. 11 is formed. This handle 1
1 is provided with a side lever 12, which is connected to the tension clutch 4a. A pair of left and right guide frames 13, 13 are pivotally supported at the intermediate portion of the frame 6 via pins 14, 14 so as to be rotatable in the front and rear directions. In addition, between the guide frames 13, 13 and the mounting table 1, the guide frames 13, 1
A balance spring 15 is tensioned to hold 3 in a neutral state (approximately vertical state during operation). The guide frames 13, 13 have a channel-shaped cross section and are erected with their respective openings facing inward. body 1
6 is provided to be able to move up and down, and an air tank 17 is attached to this elevating body 16. The air tank 17 stores air compressed by the compressor 3, and communicates with the compressor 3 through a flexible pipe 18. Although not shown, the compressor 3 is provided with a safety valve and an unloader so that the air pressure accumulated in the air tank 17 does not exceed a predetermined pressure. An operating valve 171 is provided at the bottom of the air tank 17 as shown in FIG.
An inner pipe 172 that communicates with the air tank 17 via the
The base side of an outer pipe (fumarole pipe) 19 is vertically movably inserted through the outer periphery of the pipe and extends downward.
A sharp nozzle 20 is provided at its tip,
This nozzle 20 has a plurality of blowholes 20a in the circumferential direction.
is drilled. The base of the outer pipe 19 is connected to the air tank 1
As shown in FIG. 4, the cam 173 is supported to move up and down in the stroke cylinder 21 provided at the bottom of the cylinder 7, and the power for driving the cam 173 is as follows.
The signal is transmitted through a flexible transmission pipe 22 extending from the output shaft of the speed reducer 5 (see FIG. 5).
Also, on the outside of the stroke tube 21, as shown in FIGS. 5 and 6, a belt 131 with one end fixed to the guide frame 13 is wound around and used to pull out the outer pipe 19 driven into the soil. of,
Winding drum 175 with clutch mechanism 174
is provided, and the driving power for this winding drum 175 is also obtained from the flexible transmission pipe 22. In addition, as shown in FIG.
A blocking mechanism 132 is provided which automatically stops the rising when the outer pipe 19 reaches the top of the guide rail 16 and is pulled out from the soil, and prevents the descending at the stopped position.
Driving start lever 2 that starts lowering of the outer pipe 19 and air tank 17 by releasing 2.
3 is provided at the upper position of the guide frame 13, as shown in FIGS. 1, 7, and 8.
Furthermore, as shown in FIGS. 1 and 9, when the outer pipe 19 is driven into the soil, the operation valve 171 is opened and the compressed air accumulated in the air tank 17 is transferred to the inner pipe 172 and the outer pipe 19. At the same time, the clutch mechanism 174 of the winding drum 175 is turned on, and the winding drum 175 is
The fume that rotates the belt 131 and starts the operation of pulling out the outer pipe 19 from the soil.
A withdrawal start pedal 24 is provided. Note that the mounting table 1 may be provided with a transmission so that the traveling wheels 8 can be self-propelled by the power of the engine 2. Next, the operation of the pneumatic soil improving machine of this embodiment will be explained. First, when moving the soil improving machine, with the outer pipe 19 and air tank 17 raised and stopped, hold the handle 11 and slightly lift the grounding frame 10 from the land, tilt the machine slightly forward, and move forward. Or retreat. During this movement, the engine 2, compressor 3, reducer 5, etc., which are heavy objects, are mounted on the platform 1 at a relatively low position from the ground and supported by the running wheels 8, so the center of gravity of the machine is low and The front and back balance is good, so it can be moved easily, for example, in narrow rows where crops are grown, between crops in a greenhouse, on slopes, etc. Also, even if the weight increases by increasing the capacity of the engine 2, compressor 3, etc.,
Unlike in the past, it is not supported by a worker, so it can be moved safely and efficiently. In addition, when the running wheels 8 are configured to be self-propelled by the engine 2, work and movement especially on slopes becomes easier. When performing fumarole work, lower the handle 11 to ground the grounding frame 10 as shown in Figure 1.
The aircraft body supports a guide frame 13 in an almost vertical state with running wheels 8 and a grounding frame 10, and a side lever 12
is pulled to tension the belt 4 by means of the tension clutch 4a and drive the compressor 3 and reducer 5. The air compressed by the compressor 3 is stored at a predetermined pressure in the air tank 17 via the flexible pipe 18, and the power changed in speed by the reducer 5 is transferred to the cam via the flexible transmission pipe 22. 173 to move the outer pipe 19 up and down. Then, when the driving start lever 23 is operated, the outer pipe 19
is lowered via the elevating body 16 due to its own weight, the air tank 17, the stroke cylinder 21, the cam drive mechanism, the automatic hoisting mechanism, etc., and the outer pipe 19
is automatically inserted into the dojo. When the outer pipe 19 is driven to the desired depth, depressing the fume/extraction start pedal 24 opens the operation valve 171 and the compressed air stored in the air tank 17 flows through the inner pipe 172 and the outer pipe 19. Through the blowhole 20 of the nozzle 20
It erupts all at once from the fumarole 20a, causing cracks in the deep soil around the fumarole 20a. Therefore, it swells the deep soil for fruit trees and crops and improves the physical properties of the soil. At the same time as this fume, the clutch mechanism 174
is inserted, the winding drum 175 rotates, and the belt 1
31 and pull out the outer pipe 19 from inside the soil. These series of operating conditions can be easily confirmed by the operator on the handle 11 side. When the outer pipe 19 is pulled out from the soil, the pulling force is initially large and gradually decreases. Therefore, if the guide frame 13 is configured to be pivotally supported on the frame 6, the force for pulling it out will be large after the pedal 24 is depressed. , when the outer pipe 19 starts to be pulled out, immediately lift the handle 11 slightly upward (in the direction of the arrow in FIG. 1), and the axle 9
The pin 14 acts to push the guide frame 13 upward with the pin 14 as the center, assisting the pulling force of the outer pipe 19 which is being pulled out from the soil,
The power required for extraction can be reduced. In addition, in the above embodiment, the outer pipe 19
A pipe for injecting liquid fertilizer, pest control liquid, soil conditioner (liquid), etc. is opened downstream from the operating valve 171 on the base end side of the tank, and an outer pipe 19 is inserted to inject the soil into the soil after the fumarole. You can do it like this.

【Effect of the invention】

As explained above, according to the pneumatic soil improving machine of the present invention, a running wheel is provided at the lower front side of the guide frame with the guide frame in between, and a mounting table with a low ground clearance is provided above the running wheel. An engine and a compressor driven by the engine are mounted on the top, a handle is provided on the rear side of the guide frame, a grounding frame is provided on the bottom, and an air tank and an air tank communicating with the compressor are mounted on the guide frame. Since the fumarole pipe hanging down from the bottom is mounted so that it can be raised and lowered, the guide frame is stably supported by the traveling wheels and the ground frame during the fume work, so that the work of driving in and pulling out the fume pipe can be performed stably and reliably. In addition, when moving the machine, just by lifting the handle slightly upward, the machine can be moved easily and in a well-balanced manner centered on the running wheels.Furthermore, the capacity of the engine and compressor has been increased to increase work performance, and the weight of the machine has been increased. Even if it becomes heavier, the mounting platform is lowered from the ground and is supported by running wheels, so it does not affect the handling.Moreover, when pulling out the jetted fume pipe, the handle can be moved slightly upwards. The pulling power can be reduced just by lifting it, and since the operator is located on the side of the fumarole pipe being driven in, it is easy to check the state of the fume pipe being driven in and the state of being pulled out, making it easy to use. It has the effect of

[Brief explanation of the drawing]

Fig. 1 is an overall side view showing an embodiment of the present invention, Fig. 2 is a plan view of the same, Fig. 3 is a partial sectional view of the air tank and fumarole pipe, Fig. 4 is a sectional view of the automatic driving mechanism, and Fig. 5 is a sectional view of the automatic driving mechanism. The figure is a sectional view of the transmission part of the automatic driving mechanism and the automatic extraction mechanism, Figure 6 is a partial side view of the automatic extraction mechanism, Figure 7 is a side sectional view of the lowering prevention mechanism, and Figure 8 is the driving start lever part. FIG. 9 is a partially cutaway plan view of the jet engine and FIG. 1... Mounting table, 2... Engine, 2a... Output pulley, 3... Compressor, 3a... Input pulley, 4
...Belt, 4a...Tension clutch, 5...
...Reducer, 6...Frame, 7...Bracket,
8... Traveling wheel, 9... Axle, 10... Grounding frame, 11... Handle, 12... Side lever,
13...Guide frame, 131...Belt, 1
32...Descent prevention mechanism, 14...Pin, 15...
Balance spring, 16... Lifting body, 17... Air tank, 171... Operating valve, 172... Inner pipe, 173... Cam, 174... Clutch mechanism,
175... Winding drum, 18... Flexible pipe,
19... Outer pipe (fumarole pipe), 20... Nozzle, 20a... Fumarole hole, 21... Stroke tube,
22... Flexible transmission pipe, 23... Driving start lever, 24... Fuming/pulling start pedal.

Claims (1)

[Claims] 1: a guide frame that is pivotally supported by a frame and extends vertically in a grounded state; a running wheel that is provided on the frame and is located at the lower front side of the guide frame; and a mounting table that is located directly above the running wheel;
an engine and a compressor mounted on the mounting table; a grounding frame provided on the frame and located at the lower rear side of the guide frame; a handle located diagonally upward at the rear side of the guide frame; The air tank is equipped with an air tank mounted on the rear upper part of the guide frame so as to be movable up and down, and a blow pipe hanging down from the bottom of the air tank, and the air tank is moved up and down along the guide frame using the engine as a power source. A pneumatic soil improvement machine.