JPH0545202B2 - - Google Patents

Description

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

The present invention involves blowing compressed air vigorously into the deep layer of a soil pot, causing cracks in the cultivated soil by the flow of the blast, and expanding and softening the soil (deep plowing), supplying air into the soil, and This invention relates to a self-propelled tilled soil improvement machine that tills and crushes the surface layer of tilled soil after it has been deeply plowed by a jet stream.

[Conventional technology]

As this type of self-propelled soil improvement machine, a rotary tilling device is installed at the rear of the tractor, and a subsoil crushing blade is installed vertically behind the rotary tilling device.
An exhaust port is provided at the rear of the lower end of this subsoil crushing blade, and a communication port that communicates with the exhaust port is provided at the upper end of the blade, and compressed air is supplied from a compressor to this communication port to operate the rotary tilling device. Japanese Patent Laid-Open Publication No. 1973 (1972) developed an agricultural machine that used a subsoil crushing blade to deeply plow the surface layer of cultivated soil after the surface layer had been plowed and crushed using a subsoil crushing blade, and the deep plowing was further facilitated by a jet stream of compressed air.
This is proposed by Publication No. -78501.

[Problems to be solved by the invention]

In the agricultural machine described above, the deep layer of the cultivated soil whose surface layer has been tilled to a predetermined depth by the rotary tilling device is crushed by the subsoil crushing blade and compressed air is ejected, so that the ejected compressed air is At the same time, while promoting deep plowing, there was a problem in that the jet stream ejected toward the upper layer of the cultivated soil blew the cultivated soil in the surface layer upwards, causing the topsoil to become rough. In addition, there is a drawback that the surface of the tilled soil leaves traces of streaks caused by the progress of the subsoil crushing blade, which must be leveled.

[Means to solve the problem]

The present invention was proposed with the aim of solving the above-mentioned problems, and is intended to supply compressed air from an air blower provided at the lower end of a blower column that is attached to and towed by a self-propelled vehicle such as a tractor and travels through the earth. By tilling and crushing the surface layer of cultivated soil after deep plowing with fumarole, it is possible to prevent blow-through of the fumarole flow, tillage and crush the soil in the surface layer with less power, and also level the passage marks of the fumarole support. It is an object of the present invention to provide a self-propelled tillage soil improving machine that is capable of doing the following: In order to achieve its purpose, the self-propelled tillage soil improvement work machine of the present invention has a main body frame that is attached to and towed by a self-propelled vehicle, and a fume that is attached to the main body frame and moves vertically into the soil. a strut, an air fume body attached to the lower end of the fume strut, protruding toward the traveling direction of the self-propelled vehicle, and having a fume hole perpendicular to the protruding direction; and a compressor installed on the ground part. and the air supply passage provided between the air fumarole and the air fumarole, and a rear position of the air fumarole such that the surface layer of the cultivated soil that has been deeply cultivated is tilled and crushed by the compressed air ejected from the fumarole. and a tilling and crushing claw attached to the main body frame.

【Example】

Hereinafter, one embodiment of the present invention will be described with reference to the drawings. In the figure, reference numeral 1 denotes a well-known riding type tractor (self-propelled vehicle), and at the rear of this tractor 1 there is a conventional three-way link consisting of one top link 2 and two left and right lower links 3. A tilled soil improving machine 5 according to the present invention is mounted via a point link hitch mechanism 4 so as to be able to move up and down. The tillage improvement work machine 5 is provided with a top mast 7 connected to the top link 2 on a hollow main body frame 6 extending in the left-right direction.
A lower link pin 8 coupled to the lower link 3 is provided at the lower end of the top mast 7, and a mounting base 9 extends rearward at the rear of the main body frame 6 at the rear position of the top mast 7. A gearbox 10, a compressor 11, and a main tank 12 are mounted on the mounting base 9 at the front and rear. The input shaft 10a of the gearbox 10 is projected forward, and the input shaft 10a of the tractor 1 is attached to the input shaft 10a.
Power is transmitted from the PTO shaft 1a via a power transmission system 13 consisting of a universal joint and a propeller shaft, and a transmission shaft 14 is provided protruding rearward from the gearbox 10 to drive the compressor 11. The compressed air compressed by the compressor 11 is stored in the main tank 12 via the communication pipe 15, and although not shown here, the compressor 11 and the main tank 12 are equipped with a pressure meter and a pressure meter. A safety valve, an unloader, etc. are provided to control the compressed air inside so that it does not exceed a predetermined pressure. Note that these compressor 11 and main tank 12 may be provided on the tractor 1 side. A pair of fume struts 17 are attached to the main body frame 6, which hang downward through side frames 16, 16 provided at both left and right ends of the main body frame 6. body 1
8 is installed. The fume strut 17 is slightly inclined so that its lower end is located slightly forward of the base side of the upper part when viewed from the side, and a blade edge 17a is formed at its front edge. Further, an air supply pipe 19 is attached to the back of the fume strut 17. The air fume 18 is fixedly installed at the lower end of the fume strut 17, and has a pointed tip end shaped like an arrowhead, and a narrow diameter portion is formed behind the tip end. A fumarole hole 20 is opened upward in the narrow diameter portion, and the air supply pipe 19 is communicated with the air hole 20. In addition, this fumarole 2
0 means that the narrow diameter portion may be opened sideways (horizontally) or downward. The upper end of the air supply pipe 19 is connected to a solenoid valve 2.
1 and communicates with sub-tanks 22 provided on both sides of the base of the fume strut 17. The solenoid valve 21 is opened and closed by a switch mechanism (not shown) in a switch box 21a provided at the rear of the compressor 11, and the opening and closing timing of this valve 21 can be adjusted as appropriate. . Further, the main tank 12 and the sub-tank 22 are communicated with each other by a communication pipe 23, so that when the solenoid valve 21 is opened and the compressed air stored in the sub-tank 22 is ejected from the blowhole 20, the main tank 12 and the sub-tank 22 are communicated with each other. Compressed air is filled and pressure-accumulated from the tank 12 into the sub-tank 22 via a communication pipe 23. Further, the air supply passage is constituted by a compressed air distribution path from the compressor 11 to the fumarole hole 20 of the air fumarole 18 via the main tank 12, the communication pipe 23, the sub-tank 22, and the air supply pipe 19 on the back of the fumarole column 17. . A rotary tilling and soil crushing device (working device) 24 according to the present invention is disposed behind the fumarole strut 17 and the air fume body 18. This rotary tilling and soil crushing device 24 extends left and right from both sides of the gear box 10, and has a chain case 26 and a side end of hollow power transmission support frames 25, 25 supported by the side frame 16 at the tip end. The upper end of the frame 27 is rotatably supported. The chain case 26 and the side frame 27 extend rearward and diagonally downward, and a rotary shaft 28 is pivotally supported between their lower ends, and a large number of tilled soil claws 29 are attached to the periphery of the rotary shaft 28. are doing. And gearbox 1
0, power is transmitted to the rotating shaft 28 via the transmission support frame 25 and the chain case 26. The upper part of the group of tilled soil claws 29 is covered with a shield cover 30, and an apron 31 is provided at the rear end of the shield cover 30.
is supported. A pair of left and right support rods 32 are provided rearwardly protruding from the shield cover 30, the upper ends of which are inserted into the mounting base 9, and the lower ends of which are pivoted to the upper surface of the apron 31 to adjust the plowing depth. The middle part of the rod 33 is pivotally connected, and the entire rotary tilling and soil crushing device 24 is moved up and down around the power transmission support frame 25 by adjusting screws 33a, 33a provided on the tilling depth adjusting rod 33, and the tilling depth is adjusted. It is becoming more and more like this. Note that the fumarole column 17
A gauge wheel 3 is attached to the front side of the gauge wheel 3 via a support arm 16a extending forward from the side frame 16.
4 is supported, which primarily serves to adjust the penetration depth of the fume strut 17 and the air fume 18 into the soil. Next, the operation of the above embodiment will be explained. The tillage improvement work machine 5 is attached to the rear of the tractor 1 via a three-point link hitch mechanism 4, and transmits rotational power from the PTO shaft 1a of the tractor to the input shaft 10a of the gearbox 10 via the power transmission system 13, and compresses the soil. machine 11 and rotary tillage soil crushing device 24
to drive. Then, when proceeding, the fumarole column 17
The air jet 18 is plunged from the ground to approximately a predetermined depth, and the group of tilled soil claws 29 are rotated to a predetermined depth from the surface layer of the tilled soil and pulled by the tractor 1. Then, the fumarole column 17 advances while cutting the soil to the left and right, the air fumarole 18 advances horizontally in the deep layer of the cultivated soil, and the tilling and crushing device 24 tills and crushes the surface layer of the cultivated soil behind the fumarole column 17. . In this process, Switchbox 21
The switch in a opens the solenoid valve 21 by operating at predetermined timing intervals, and when the solenoid valve 21 is opened at the predetermined timing intervals, the compressed air stored in the sub tank 22 flows through the air supply pipe 19. The gas is ejected forcefully upward from the fumarole hole 20. The ejection of high-pressure air causes cracks (crack region C) in the deep soil above the fumarole 20, as shown in FIG. Although the cracks propagate to the sides and downwards of the fumarole 20, they are most prevalent in the upper part where high-pressure air easily flows. Similarly, cracks propagate upward in the fumarole 18 in which the fumarole 20 is opened sideways and downward. In this case, the high-pressure air immediately after being ejected from the fumarole hole 20 flows sideways or downward along the axis of the fumarole hole 20, but as the cracks occur, the high-pressure air flows upward. In this way, by sequentially blowing compressed air at predetermined timing intervals, crack regions C are formed continuously, and the cultivated soil is expanded and softened. Since the surface layer of the cultivated soil after being expanded and softened is tilled and crushed by the rotary tillage and crushing device 24, the fumarole that formed the crack area C does not blow up the cultivated soil in the surface layer, and the rotary tilled and crushed soil is device 24
This method requires less power to till and crush the surface layer of cultivated soil that has cracks to some extent, and furthermore, the traces of the passage of the fumarole column 17 are leveled and disappear at the same time as the tilling and crushing work. In addition, in the above embodiment, the left and right blowholes 20,
The air jets from 20 may be jetted at the same time, but
This may be done alternately, or
The hollow interior of the main body frame 6 may be used as a sub-tank. Further, the fume struts 17 and the air fume bodies 18 are not limited to two as shown in the figure, but may be more than two, and the means for opening and closing the valve 21 may be replaced with another known mechanism, and the valve may be opened automatically or manually. It may also be configured to open and close. Furthermore, the rotary tilling and crushing device 24 may be configured with other types of working devices.

【Effect of the invention】

As is clear from the above description, according to the self-propelled tilled soil improving machine of the present invention, at least the surface layer of the tilled soil that has been deeply plowed by the fumarole from the fumarole is provided at least behind the fumarole of the air fumarole. Since we have installed a work device that tills and crushes the soil, the deep plowing effect by the fumarole from the fumarole is performed on the cultivated soil that has not been tilled and crushed in the surface layer, so there is less blow-through of compressed air from the surface layer, and deep plowing is possible. is carried out effectively. In addition, since the surface layer of the tilled soil is tilled and crushed after it has been deeply tilled, the required power is reduced. Furthermore, since the traces of the fumarole struts are leveled and eliminated by tilling and leveling the land using the working device, for example, transplanting or sowing operations can be carried out in that state.

[Brief explanation of drawings]

Figure 1 is a side view showing one embodiment of the present invention, Figure 2 is a side view showing one embodiment of the present invention;
The figure is a rear view of the tillage improving machine. DESCRIPTION OF SYMBOLS 1... Tractor, 1a... PTO axis, 2... Top link, 3... Lower link, 4... Three-point link hitch mechanism, 5... Cultivating soil improvement work machine, 6... Main body frame, 7... Top mast, 8...Lower link pin, 9...Mounting base, 10...Gearbox, 10a...Input shaft, 11...Compressor, 12...
...Main tank, 13...Power transmission system, 14...
Transmission shaft, 15, 23... Communication pipe, 16... Side frame, 16a... Support arm, 17...
Fumarole strut, 17a... Blade edge, 18... Air fumarole, 19... Air supply pipe, 20... Fumarole hole, 21...
Solenoid valve, 21a... switch box, 22... sub tank, 24... rotary tilling and crushing device, 25... transmission support frame, 26...
Chain case, 27... Side frame, 28... Rotating shaft,
29...Culture soil claw, 30...Shield cover,
31...Apron, 32...Support rod, 33...Pilling depth adjustment rod, 33a...Adjustment screw, 34...Gauge wheel, C...Crack.

Claims (1)

[Claims] 1 A main body frame that is attached to and towed by a self-propelled vehicle,
A fumarole strut is attached to the main body frame and moves vertically into the soil, and a fumarole strut is attached to the lower end of the fume strut and protrudes in the traveling direction of the self-propelled vehicle, perpendicular to the protruding direction. The air is deeply plowed by an air fumarole with a fumarole, an air supply passage provided between the compressor installed on the ground and the air fumarole, and compressed air ejected from the fumarole. 1. A self-propelled tilled soil improvement work machine, comprising a tilling and crushing claw attached to said main body frame at a position rearward of said air blower so that the surface layer of cultivated soil is tilled and crushed.