JPS646673Y2 - - Google Patents

Description

[Detailed explanation of the invention] Lotus roots are grown underground in rice fields where there is a large amount of water.
They grow within 20cm to 30cm of soil, so in order to dig up lotus root, the soil where the lotus root is growing is fluidized with a jet of water and pushed backwards, allowing the lotus root, which has a lighter specific gravity, to rise above the water surface of the soil. Work is underway to collect what floats to the top.

This invention adjusts the water pressure of the jet water discharged into the soil where lotus root grows depending on the geology of the soil where lotus root grows and the depth of the underground where lotus root grows, causing damage to lotus root. To provide a lotus root harvesting machine capable of harvesting lotus roots without feeding them.

The present invention will be explained below with reference to the drawings. 1 is a machine equipped with a running device 2 for a track belt, a prime mover 3 is mounted almost in the center of the machine 1, and a suction port 4 is installed on one side of the machine 1 on the outside of the machine 1. A pump 5 facing each other is installed, and a belt 8 is passed between a pulley 6 supported on the driving shaft of the prime mover 3 and a pulley 7 supported on the drive shaft of the pump 5.

Reference numeral 10 denotes a support fitting fixed to the rear part of the machine 1 so as to protrude upward, and the base end of the arm 9 is supported on a rotating shaft provided at the upper end of the support fitting 10. is rotatably mounted, and the piston rod of the hydraulic cylinder 11 is rotatably connected to a protrusion provided on the lower surface of the base of the arm 9, and the arm 9 is supported by a support fitting 10 so as to be movable up and down. The hydraulic cylinder 11 is operated by a hydraulic pump 12 and a control lever 13 provided approximately in the center of the machine base 1.

A water pipe 14 is connected and fixed to the tip of the arm 9 at a substantially right angle to the arm 9 and directed downward, and the upper end opening of the water pipe 14 and the discharge port 15 of the pump 5 are connected by a hose 16.

The water pipe 14 has its tip bent into a hook shape to form a spout pipe 17, and inside the spout pipe 17 is a cylindrical core 1 whose outer diameter is smaller than the inner diameter of the spout pipe 17.
8 is placed concentrically with the ejection pipe 17, and a threaded rod protruding from the upper end of the core 18 is screwed into a hole made in the pipe wall of the ejection pipe 17. is tightened and fixed to the ejection pipe 17, and an annular ejection opening a is formed between the lower end surface of the core 18 and the lower end of the ejection pipe.

The cylindrical core 18 has a cylindrical portion having the same diameter over its entire length as shown in Fig. 3, or a cylindrical portion whose diameter extends from the upper end to the lower end as shown in Fig. 4. The diameter is slightly larger depending on the size of the diameter.

The core 18 in the ejection pipe 17 is fixed by screwing the threaded rod of the core 18 through a hole in the tube wall and tightening it with a nut 19. Then, remove the core 18 from the jet pipe 17, replace it with a separately prepared core with a different outer diameter, and attach the core to the jet pipe 17 with a threaded rod and nut 19. Spout pipe 1
The cross-sectional area of the annular discharge port a formed between the lower end of the discharge port a and the lower end of the discharge port a can be changed.

In addition, 20 in the figure is a reducer installed on the machine base 1 in front of the prime mover 3, and a belt 22 is connected to the pulley 6 of the prime mover 3 and the pulley 21 of the input shaft of the reducer 20.
The output shaft of the reducer 20 is connected to the traveling device 2.
It is connected to a transmission 24 by a pulley 23 and a belt 25. Reference numeral 26 denotes an operation unit provided at the front of the machine base 1 for controlling the movement of the machine body and the direction of movement.

The lotus root digging machine of the present invention configured as described above operates the hydraulic cylinder 11 using the hydraulic pump 12 and the control lever 13 to lift the arm 9 and the water pipe 14 fixed thereto to the position indicated by the chain line in FIG.
The traveling device 2 is driven to put the machine into a rice field where lotus roots are cultivated, one end of the hose is connected to the water intake port 4 of the pump 5, the other end is put into the irrigation canal, the pump 5 is operated, and the hydraulic cylinder 11 is turned on. The arm 9 and the water pipe 14 are actuated downward, and the spout pipe 1 is rotated downward.
7 facing a paddy field where lotus roots are cultivated as shown in FIG. 7, the machine is moved forward by the traveling device 2. Therefore, water from the irrigation canal pumped by the pump 5 is sent to the jet pipe 17 through the hose 16 and the water pipe 14, and a circular rod core 18 is disposed concentrically with the peripheral wall of the jet pipe 17. The jet water is poured into the paddy field where lotus roots are cultivated from an annular discharge port a formed between the bottom surface of the cylindrical core 18 and the lower end of the spout pipe 17 through the gap, The jet water collapses the surrounding soil from the top to the bottom of the lotus root growing underground, fluidizes it, and sweeps it backwards.Since the lotus root has a light specific gravity, it floats above the soil above the water surface, which helps workers. Collects the lotus root, and in this way, the lotus root growing underground can be harvested one after another.

In order to improve the quality of the lotus root that floats to the surface of the water, it is necessary to float the lotus root in a state where several nodes are connected without breaking at the joints, and also to make the skin of the lotus root It is important to avoid discoloration due to contamination with water or the soil being fluidized.

For this purpose, it is necessary to jet water with the lowest possible water pressure from the outlet a of the jet pipe 17, but the water pressure of the jet water may be adjusted depending on the soil quality and the depth of the place where the lotus root grows underground. It becomes necessary to adjust the amount.

If the lotus root is grown in paddy field soil or sandy soil, the soil around the lotus root tends to crumble, so low-pressure jet water is best.If the water pressure is high, the soil with large particles may damage the skin of the lotus root. . Therefore, in this case, a cylindrical core 18 with a relatively small diameter on the lower end surface is selected and placed concentrically within the ejection pipe 17, and the threaded rod of the core 18 is screwed into the hole in the pipe wall to tighten the nut. 19, and connect the bottom of the core 18 and the spout pipe 1.
The cross-sectional area of the annular discharge port a formed between the lower end of 7 and the lower end of the lotus root is made relatively large, and the water pressure of the discharged jet water is lowered to smoothly fluidize the sandy soil and prevent damage to the lotus roots. It can be prevented.

In addition, the soil of the rice fields where lotus roots are cultivated is clayey, and the cohesive force of the clay prevents the soil from collapsing.
If the pressure is to be reduced to break up the flocculated clay, select a cylindrical core 18 with a relatively large lower end surface, place it concentrically in the ejection pipe 17, and insert the threaded rod of the core 18 into the hole in the pipe wall. The nut 19 is screwed into the ring, and the cross-sectional area of the annular discharge port a formed between the bottom surface of the core 18 and the lower end of the jet pipe 17 is made relatively small.
By increasing the water pressure of the discharged jet water, clayey soil can be reliably fluidized and lotus roots can be floated to the surface of the water.

Next, the jet water must reach the place where the lotus root grows underground, so if the lotus root grows deep below the ground, it will have higher water pressure than if it grows shallower than the ground. A jet of water is required, but the present invention adjusts the water pressure of the jet water as described above to properly spray the jet of water to the place where the lotus roots are growing underground, making it possible to easily dig up the lotus roots. can.

The present invention uses a lotus root digging machine that uses jet water to dig up lotus roots by adjusting the water pressure of the jet water with a simple method depending on the soil quality of the rice field where lotus roots are grown or the depth of the underground where the lotus roots grow. It has the effect of making harvesting reliable and easy.

[Brief explanation of the drawing]

Fig. 1 is a side view of the lotus root digging machine according to the present invention, Fig. 2 is a plan view of the same as above, and Fig. 3 is a cylindrical core inserted into the spout pipe formed by bending the tip of the water pipe. Fig. 4 is a cross-sectional view taken along the line A-A in Fig. 3, and Fig. 5 shows another example of the cylindrical core installed in the same jet pipe. A vertical cross-sectional view of the state, Fig. 6 is a cross-sectional view taken along the line B-B in Fig. 5, and Fig. 7 is a longitudinal cross-sectional view of the state.
The figure is an explanatory diagram of the state in which lotus root is dug up using the lotus root digging machine of the present invention. 1... Machine base, 2... Traveling device, 3... Prime mover,
4... Pump suction port, 5... Pump, 9... Arm, 10... Support metal fittings, 11... Hydraulic cylinder, 12... Hydraulic pump, 13... Control lever,
14... Water pipe, 15... Pump discharge port, 16
... Hose, 17 ... Ejection pipe, 18 ... Cylindrical core, 19 ... Nut, a ... Annular discharge port.

Claims (1)

[Scope of utility model registration request] A pump 5 with the suction port 4 facing outward is installed on one side of the machine base 1 equipped with the traveling device 2, and a support metal fitting 10 is provided at the rear of the machine base 1, and the pump 5 is connected to a rotating shaft provided at the upper end of the support metal fitting 10. The arm 9 supports the base end of the arm 9.
The lower end of the support fitting 10 and the base of the arm 9 are connected by a hydraulic cylinder 11, and a water pipe 14 is fixed to the tip of the arm 9 at right angles to the arm 9 and directed downward. Water pipe 1
4 and the discharge port 15 of the pump 5 are connected by a hose 16, and the tip of the water pipe 14 is bent into a hook shape to form a spout pipe 17.
Inside, a cylindrical core 18 whose outer diameter is smaller than the inner diameter of the ejection pipe 17 is arranged concentrically, and a threaded rod provided at the upper end of the core 18 is bored into the pipe wall of the ejection pipe 17. A lotus root digging machine characterized in that a nut 19 is screwed through the hole to form an annular discharge port a between the lower end surface of the core 18 and the lower end of the spout pipe 17.