JPH0125544Y2 - - Google Patents

Description

[Detailed explanation of the invention] Lotus roots are usually grown 20cm to 50cm underground in flooded rice fields.
It grows in 1.5 cm of soil, and the cultivated soil varies widely, including volcanic ash, sand, clay, or a mixture of these soils. To excavate this lotus root, a high-pressure jet of water is discharged almost perpendicularly to the soil surface from a small-diameter outlet onto the surface of the soil where the lotus root grows, and the soil is moved underground to dig out the lotus root. If you make a notch in the soil by cutting it to the desired depth, and then discharge relatively low-pressure jet water from a large-diameter outlet onto the soil surface at a level that does not damage the lotus root, the soil will form a clod from the notch and move backwards. You can collect lotus root, which has a light specific gravity and floats to the surface of the water.

Conventionally, in a self-propelled lotus root digging machine, two high-pressure water jets are placed at the rear of the machine, one behind the other, to fluidize the soil in which the lotus roots are growing and push it backwards to take out the lotus roots. It is well known that a large amount of energy is required to fluidize the soil, and a large water pump is required to dig out the lotus root, which grows 30 to 50 cm deep underground in hard clay fields. be.

This invention first discharges high-pressure jet water almost perpendicularly to the soil surface from a small-diameter outlet, cuts the soil to the depth where the lotus roots are growing, makes an incision, and then releases lotus roots from a large-diameter outlet. A relatively low-pressure jet of water that does not cause damage is ejected onto the soil surface, pushing the soil backwards in the form of clods, making it easy to dig up lotus roots that grow deep (30cm to 50cm) in hard clay soil. This is to provide a lotus root digging machine that can be used.

The present invention will be explained below with reference to the drawings. Reference numeral 1 designates a machine base of a running vehicle equipped with a track belt running device 2. A water pump 3 with a suction port 4 facing rearward is installed on one side of the machine base 1. A support tube 5 is arranged vertically at the center of the end and is rotatably attached, and the base end of a water pipe support fitting 6 is pivotally supported at the upper end of the support tube 5 so as to be movable up and down. Reference numeral 7 denotes a hydraulic cylinder that is attached to a protrusion on the rear surface of the lower part of the support tube 5 so as to be able to move vertically. The water pipe support fitting 6 is configured to move up and down using the upper end of the support tube 5 as a fulcrum by the operation.

Reference numeral 8 denotes a hydraulic cylinder which is attached to the upper surface of the machine base 1 at a position on one side of the rear part of the machine base 1 so as to be rotatable from side to side. The support tube 5 and the water pipe support fitting 6 attached thereto are rotatably connected, and the operation of this hydraulic cylinder 8 causes the support tube 5 and the water pipe support fitting 6 attached thereto.
It is configured to rotate from side to side.

The proximal end of a water pipe 10 whose rear part is bent downward and a large-diameter discharge port 11 of jet water is formed at the tip is attached to the water pipe support fitting 6 with a tightening fitting 12, and the base end opening of the water pipe 10 is fixed. and the discharge port 14 of the water pump 3
and are connected by a hose 13 via a flow rate control valve 15.

16 is a high pressure hose whose base end opening is connected to the branch pipe 17 of the discharge port 14 of the water pump 3, and its tip opening is connected to the opening of the high pressure discharge fitting 19 whose tip forms a small diameter discharge port 18, and the high pressure discharge The metal fitting 19 is a support metal fitting 2 provided below the bend at the rear of the water pipe 10.
A small diameter discharge port 18 is attached to the soil surface so as to be substantially perpendicular to the soil surface.

The small-diameter outlet 18 and the large-diameter outlet 11 are arranged approximately in a straight line from front to back along the water pipe 10, respectively. Further, the diameter of the discharge port is such that the diameter of the large diameter discharge port 11 is larger than the diameter of the small diameter discharge port 18;
The diameter of the small-diameter discharge port 18 is made as small as possible because the small-diameter discharge port 18 must deeply penetrate the soil to the depth of the soil where the lotus roots are growing by the water pressure of the jet water sucked up by the pump 3.

21 is the prime mover mounted in the middle of machine 1, 22
is a reducer installed in front of it, which transmits the power of the prime mover 21 to the pump 3 and the reducer 22 through a pulley and pelt mechanism, and connects the reducer 22 and the traveling device 2.
The machine 1 is connected to a transmission section 23 by a mechanism of pulleys and belts, and an operating section 24 is provided at the front of the machine base 1 to control the traveling direction and direction of the traveling vehicle. Reference numeral 25 denotes a hydraulic pump installed adjacent to the prime mover 21 in the middle of the machine base 1. The output shaft of the prime mover 21 and the input shaft of the hydraulic pump 25 are connected by a pulley and belt mechanism. It is connected to a hydraulic oil tank 26 provided on the other side by a pipe. On the rear panel of the hydraulic oil tank 26, a solenoid valve 27 for vertical operation of the water pipe 10 and a solenoid valve 28 for left and right operation of the water pipe 10 are arranged side by side. are connected by a lead wire 30, and the left-right operating solenoid valve 28 and the left-right operating switch 31 are connected by a lead wire 32.

Note that the hydraulic oil tank 26 and the above-mentioned hydraulic cylinders 7 and 8 each have a solenoid valve 27 for vertical operation.
and are connected to each other by an oil pipe via a solenoid valve 28 for left and right operation.

Although not shown, the left/right operating switch 31 is connected to a relay connected to the left/right limit switch, the relay is further connected to the left/right operating solenoid valve 28, and the left/right limit switch is connected to the hydraulic cylinder 8.
The water pipe 10 is configured to automatically rotate left and right by interlocking with the water pipe 10.

The lotus root digging machine of the present invention constructed as described above is put into a lotus root field, one end of the hose is connected to the suction port 4 of the pump 3, the other end is put into the water inlet (not shown), and the power of the prime mover 21 is used. Lift pump 3 is operated. Then, the vertical operation switch 29 is operated to cause the large-diameter outlet 11 of the jet water at the tip of the water pipe 10 and the small-diameter outlet 18 at the tip of the high-pressure hose 15 to peek out onto the surface of the soil of the lotus root field. At this time, the small-diameter discharge port 18 is fixed to the high-pressure discharge fitting 19 so as to be substantially perpendicular to the soil surface. Next, when the left and right operation switch 31 is operated to rotate the water pipe 10 left and right and move the vehicle forward (in the direction opposite to the position of the water pipe 10), the water sucked up by the water pump 3 is pumped up. Discharge port 14 of pump 3
and a water pipe 10 through its branch pipe 17.
Jet water is simultaneously discharged onto the soil surface of the lotus root field through the large-diameter outlet 11 at the tip and through the high-pressure hose 16 from the small-diameter outlet 18 at the tip. At this time, the water sucked up by the water pump 3 is transferred to the discharge port 14 of the water pump 3 and the flow rate control valve 1.
5 and is discharged as jet water from the large-diameter discharge port 11, and is also discharged as jet water from the small-diameter discharge port 18 via the branch pipe 17 of the discharge port 14.
The water pressure of the jet water discharged from the large-diameter discharge port 11 is
The flow rate control valve 15 adjusts and lowers the flow rate of water sucked up by the water pump 3, and increases the amount of jet water discharged from the small diameter discharge port 18,
You can increase water pressure. The small-diameter discharge port 18 can discharge high-pressure jet water almost perpendicularly to the soil surface of the lotus root field, so the water pressure cuts the soil into stripes as shown in Figure 5, and the soil flows backward. A cut is made without washing away the lotus root, and the soil becomes a clod from the cut and is swept backward by the jet water discharged from the large-diameter discharge port 11, and the lotus roots float above the soil on the water surface.

(Refer to Fig. 5) In this way, the small diameter outlet 18 and the large diameter outlet 11 are arranged along the water pipe 10, in front and behind each other, on a substantially straight line, and the small diameter outlet 18 is placed in the lotus root field. If it is arranged almost perpendicularly to the soil surface and the jet water is discharged simultaneously to the small-diameter outlet 18 and the large-diameter outlet 11, it will be easy to dig up lotus roots that are growing 40 to 50 cm deep underground in lotus root fields. There are effects that can be produced.

[Brief explanation of drawings]

Figure 1 is a side view of the lotus root digging machine according to the present invention, Figure 2 is its plan view, and Figure 3 is the small diameter discharge port 1.
8 is a side view of the large-diameter discharge port 11, FIG. 4 is a front view of the same as above, and FIG. 5 is an explanatory diagram of a state in which lotus root is dug with the lotus root digging machine of the present invention. The arrow indicates the direction of movement of the aircraft. 1...Machine base, 2...Traveling device, 3...Lifting pump, 4...Suction port, 5...Support tube, 6...Water pipe support fitting, 7, 8...Hydraulic cylinder, 9...Crank Arm, 10...Water pipe, 11...Jet water large diameter outlet, 12...Tightening fitting, 13...Hose,
14... Lifting pump discharge port, 15... Flow control valve, 16... High pressure hose, 17... Branch pipe, 18
...Jet water small diameter discharge port, 19...High pressure discharge fitting,
20...Supporting metal fittings, 21...Motor, 22...Reducer, 23...Traveling transmission section, 24...Operation section, 25...Hydraulic pump, 26...Hydraulic oil tank, 27, 28...Solenoid valve , 29... Vertical operation switch, 30, 32... Lead wire, 31... Left and right operation switch.

Claims (1)

[Scope of utility model registration request] A water pump 3 is installed on one side of a machine base 1 of a traveling vehicle equipped with a traveling device 2 such as an endless track belt, and a support cylinder 5 is vertically arranged in the center of the rear end so that it can rotate freely. The tip of the piston rod of a hydraulic cylinder 8, which is attached to the upper surface of the machine base 1 so as to be rotatable left and right at a position on one side of the rear part of the machine base 1, is rotated to a crank arm 9 protruding from one side of the lower end of the support cylinder 5. A water pipe support fitting 6 is attached to the upper end of the support tube 5.
The base end of the water pipe 10 is pivoted so as to be vertically movable, and the water pipe support fitting 6 has a water pipe 10 whose rear part is bent downward and a large diameter discharge port 11 of jet water is formed at its tip. It is attached with a fastening fitting 12, and the base end opening of the water pipe 10 and the discharge port 14 of the water pump 3 are connected with a hose 13 via a flow rate control valve 15. The high-pressure hose 16 is fixed to a support fitting 20 at the lower bent portion of the water pipe 10 so as to form a discharge port 18 and be substantially perpendicular to the ground.
The base end opening of is connected to the branch pipe 17 of the discharge port 14 of the water pump 3, and the small diameter discharge port 18 is connected to the large diameter discharge port 1.
Lotus root moat machine placed in front of 1.