JPH0368646B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION (A) Field of Industrial Application The present invention relates to a paddy field work vehicle such as a riding rice transplanter equipped with a fertilization device, and more particularly to an arrangement configuration of the fertilization device.

(b) Conventional technology As shown in FIGS. 4 and 5, a rice transplanter 1 equipped with a conventional fertilization device has fertilizer tanks 3, 3 disposed on the left and right sides of the driver's seat 2, and a rice transplanter 1 equipped with a conventional fertilization device. A nozzle 9 is installed near each planter 6 on the attachment part 5. The fertilizer tanks 3, 3 are connected to a sub-tank 11 near the center of the traveling aircraft via a suction hose 10, and further from the sub-tank 11 to a section below the driver's seat via a number of hoses 12 depending on the number of planting rows. It is guided to the installed pump 13. As for the pump 13, a large number of flexible rotor pumps 13a... corresponding to the number of planting rows are installed in line in the longitudinal direction of the machine, and these pumps are connected to the PTO drive shaft 15 via a power transmission device 16 such as a belt. Rotationally driven. Further, the discharge ports of the rotor pumps 13a are connected to indicators 20 installed next to the driver's seat 2 via hoses 19, and from the indicators 20 again via hoses 21 to the vicinity of the planter 6. is guided by the nozzle 9.

Based on the above configuration, pump 2
0 is driven, paste-like (or liquid) fertilizer in the fertilizer tank 3 is supplied to the sub-tank 11 via the hose 10, and is further branched into a number of hoses 12 in the sub-tank 11, each of which is connected to a rotor pump 13. The indicators 2
It is discharged to 0. As a result, the driver in the driver's seat 2 can check the flow of each hose using the indicator 20, and the flow of the hose is guided from each indicator 20 through the hose 21 to the nozzle 9, and the flow is guided to the vicinity of the seedlings planted by the planter 6. Fertilization is applied in a striped manner along the

(C) Problems to be Solved by the Invention By the way, in the above-mentioned conventional fertilization device, the fertilizer flows from the tank 3 located on the side of the driver's seat 2 to the pump device 13 located below the driver's seat. From the device 13 to the indicator 20 on the side of the driver's seat 2
is raised again and then guided to the nozzle 9, so that the hose pipes intersect vertically and horizontally,
Its structure and installation have become very complicated, and pressure and flow losses occur due to the bends and height differences of each hose.

(d) Means for solving the problem.

The present invention aims to solve the above-mentioned problems, and as shown in FIGS. 1 to 3, an engine 26 is mounted in the front part, and a driver's seat 29 is mounted behind the engine. In a riding paddy field working vehicle, which has a paddy field working section 30 supported movably up and down behind a traveling body 25, fertilizer tanks 32, 32 are arranged on both sides of the engine at the front of the traveling body. Fertilizer pump device 4 on the traveling body 25
0, the fertilizer pump device has a sub-tank 50 communicating with the fertilizer tank on the front side of the pump body, and a hose 41 extending from the rear of the pump body, and further includes a Fertilizer flow detection sensors 42 are interposed in each of these hoses at the rear, and fertilization nozzles 46 communicating with the rear ends of these hoses are arranged below the paddy field working section 30, so that these fertilizer tanks 3
2. A riding paddy field work vehicle 21 equipped with a fertilization device in which a pump device 40, a flow detection sensor 42, and a nozzle 46 are arranged approximately linearly from the front to the rear of the machine body in accordance with the flow direction of fertilizer. be.

(e) Effect Based on the above configuration, paste (or liquid) fertilizer is guided from the tank 32 at the front of the machine to the pump device 40 by the head difference, and further passes through the flow detection sensor 42 based on the rotation of the pump device 40 and is sent to the nozzle. 46 and fertilize in a striped manner. That is, the fertilizer flows approximately in a straight line from the front to the rear of the aircraft.

(f) Examples Examples of the present invention will be described below with reference to the drawings.

As shown in FIGS. 1 and 2, the riding rice transplanter 21 has a traveling body 25 supported by front wheels 22 and rear wheels 23, and the traveling body 25 has an engine in front of the front wheels. 26 is mounted, and a driver's seat 29 is disposed such that a seat 27 is located between the front and rear wheels, that is, at the center of gravity of the machine. Furthermore, a planting section 30 is supported at the rear of the traveling body 25 via a link 28 so as to be able to rise and fall freely, and a large number of planters 6 and two and a half pine seedlings are loaded in the vertical direction on the planting section 30. A long seedling stand 31 on which the seedlings can be placed is provided.

Fertilizer tanks 32, 32 for paste or liquid fertilizer are installed on the left and right sides of the front of the aircraft, and a hose 36 passes through the aircraft frame 35 and communicates with the left and right tanks 32, Further, the hose 36 is connected to the step surface 3 of the driver's seat 29.
A suction hose 39 extends rearward below 7 and communicates with a pump device 40 disposed below the step surface 37 in the driver's seat 27 portion. Furthermore, the pump device 40 is guided to each fertilizer flow detection sensor 42 and switching valve 38 installed in a row in the lateral direction of the machine via hoses 41 corresponding to the number of planting rows, and It is led to a nozzle 46 near the planter 6 via a prevention valve 45. The pump device 40, flow detection sensor 42, switching valve 38, drip prevention valve 45, and nozzle 46 are located below the fertilizer head of the fertilizer tank 32, and each of these components 32, 40, 4
2, 38, 45, 46 according to the flow of fertilizer,
They are arranged approximately in a straight line from the front to the rear of the aircraft.

The pump device 40 includes a large number of screw pumps corresponding to the number of planting rows, and these screw pumps are arranged in an annular manner on the same circumference with their suction sides facing the sub-tank 50. The flow detection sensor 42 has movable electrodes for low pressure and high pressure installed on a diaphragm, and the drip prevention valve 45 is attached to the float 51 together with the nozzle 46, and has a structure similar to a check valve. The valve body is biased by a spring so that a predetermined pressure is applied to the valve body. Therefore, a predetermined pressure is normally applied to the flow detection sensor 42 portion by the prevention valve 45, and if this pressure is between the operating ranges of the low-pressure and high-pressure movable electrodes, it is determined that the flow is normal. Detect. Furthermore, the switching valve 38 is used to stop part of the multi-row planting at the edge of the field, etc., and by switching the valve 38, communication is returned to the sub-tank 50 via the return hose 52.

In addition, as shown in detail in Figure 3, the fertilizer tank 3
2 and 32 are bonnets 53 that cover the engine 26;
The hose 36 connecting both tanks 32 is supported by a pipe 56 installed on the fuselage frame 35. . Further, the hose 36 is connected to a suction hose 39 through a joint 57, and is also connected to a drain hose 57.

Since this embodiment has the above configuration,
The paste or liquid fertilizer injected into the fertilizer tanks 32, 32 installed at the front of the machine is passed through a hose 36 and a suction hose 39 extending approximately straight toward the rear of the machine based on the head difference. and is supplied to the sub-tank 50. Then, with the start of the planting work, the pump device 40 is driven, and each screw pump of the pump device 40 is connected to the sub tank 50.
The fertilizer inside is sucked in and discharged to each hose 41, and is further pressure-fed to the flow detection sensor 42 and the switching valve 38 via the hose 41, which extends substantially straight toward the rear of the machine. Then, the flow detection sensor 42 detects whether the fertilizer is flowing at a predetermined pressure, and the detection result is displayed on the panel of the driver's seat 29. Furthermore, the fertilizer that has passed through the switching valve 38 is forcedly fed to the drip prevention valve 45 via a hose 43 that extends in the direction of each nozzle 46 so as to slope slightly downward toward the rear and spread from side to side. The nozzle 46 applies fertilizer in a striped manner to the sides of the seedlings planted by each planter 6.

(G) Effects of the Invention As explained above, according to the present invention, the fertilizer pump device 40 has the sub-tank 50 on the front side of the pump body, and the hose 41 extends from the rear of the pump body, and the fertilizer pump device 40 has the sub-tank 50 on the front side of the pump body, and 32, pump device 40, flow detection sensor 42 and nozzle 4
6 are arranged approximately linearly from the front to the rear of the machine in accordance with the flow direction of the fertilizer, each hose 39, 41, 43 can be piped approximately linearly, reducing the pipe resistance of each hose. It is possible to significantly reduce the amount of water and eliminate the difference in height, allowing the fertilizer to flow smoothly. Furthermore, a fertilizer tank 26 is installed on the side of the engine 26 at the front of the machine, a pump device 40 is placed in the body 25 behind it, and a flow detection sensor 42 is placed behind it, so that the fertilization device can be used for riding on paddy fields. Even though the fertilizer application device is installed distributed throughout the body of the work vehicle 21, it is possible to maintain a good weight balance of the work vehicle, and most of the fertilizer application device components are installed in the lower part of the vehicle. As a result, each hose is not visible from the outside of the aircraft, creating a clean appearance that feels integrated with the aircraft. In addition, when cleaning after use, since each component and each hose are arranged approximately in a straight line, water may be poured into the tank 32 and pumped by the pump device 40, or by water pressure from tap water. It is very easy to clean, and since there are no parts such as hose bends where fertilizers tend to accumulate, it can be cleaned reliably.

[Brief explanation of drawings]

FIG. 1 is an overall side view showing a riding rice transplanter to which the present invention is applied, FIG. 2 is a plan view thereof, and FIG. 3 is a schematic front sectional view thereof. FIG. 4 is a side view of a conventional riding rice transplanter with a fertilization device, and FIG. 5 is a rear view of the conventional riding rice transplanter. 6... Planter, 21... Riding paddy work vehicle (riding rice transplanter), 25... Traveling body, 26... Engine, 30
...Paddy field work department (planting department), 32...Fertilizer tank, 3
6, 39, 41, 43... Hose, 38... Switching valve, 40... Fertilizer pump device, 42... Fertilizer flow detection sensor, 45... Dripping prevention valve, 46... Nozzle.

Claims (1)

[Scope of Claims] 1. A riding paddy field working vehicle having a paddy field working section supported movably up and down behind a traveling body having an engine mounted in the front and a driver's seat arranged behind the engine, comprising: A fertilizer tank is arranged on both sides of the engine at the front of the traveling machine, and a fertilizer pump device is arranged in the running machine behind it, and the fertilizer pump device is connected to the fertilizer tank at the front of the pump body. The pump has a sub-tank with hoses extending from the rear of the pump body, a fertilizer flow detection sensor is interposed in each of these hoses at the rear of the pump device, and a fertilizer nozzle is communicated with each of the rear ends of these hoses. A fertilizer application device in which a fertilizer tank, a pump device, a flow detection sensor, and a nozzle are arranged approximately linearly from the front to the rear of the machine in accordance with the flow direction of the fertilizer. A passenger paddy field work vehicle equipped with 2. The fertilizer is a paste fertilizer, the riding paddy field work vehicle is a riding rice transplanter, and the fertilizer nozzle is a nozzle that is located on the side of the planter and applies fertilizer in a striped manner. The side row fertilizing rice transplanter according to item 1.