JPH0369483B2 - - 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 a planar arrangement of each component in 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 through 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. Fertilizer is applied in a striped manner along the

(C) Problems to be Solved by the Invention By the way, in the conventional fertilization device described above, 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, and then to the pump device 13 located below the driver's seat. 13 to driver seat 2 side indicator 20
is raised again and then guided to the nozzle 9, so that the hose pipes intersect vertically and horizontally,
Its structure and installation are very complicated, and the fertilizer tanks 3, 3, indicator 20, and hoses 19, 21 connected to them are arranged in an extremely conspicuous part on the side of the driver's seat 2, and the fourth
As you can see from the diagram, it looks like a riding rice transplanter with a fertilization device attached afterwards, and the entire fertilization device is concentrated at the rear of the traveling machine, making the riding rice transplanter look like an afterthought. There is a risk of becoming unbalanced.

In addition, fertilizers such as paste have a corrosive effect and must be cleaned after use. However, the pump device 13 is located inside the aircraft body, and the hoses are arranged in a complicated manner, crossing vertically. Therefore, the cleaning work was extremely troublesome.

Further, in order to stop the supply of fertilizer to the nozzle 9 for row stopping, etc., a switching valve is provided, but the switching valve is provided in the indicator 20 portion, and therefore each switching valve and the planter 6 This can make it difficult to deal with the situation and lead to erroneous operations.

Therefore, the present invention distributes each component of the fertilization device across the front and rear of the traveling machine, disposes the pump device on one side below the seat, and installs a switching valve in a link device corresponding to each fertilization nozzle. It is an object of the present invention to provide a riding paddy field work vehicle equipped with a fertilization device that is arranged side by side in the lateral direction of the vehicle and that solves the above-mentioned problems.

(d) Means for Solving the Problems The present invention has been made in view of the above-mentioned circumstances, and is illustrated with reference to FIGS. 1 and 2, for example.
A paddy field work section 30 having a large number of work bodies 6 arranged in parallel in the lateral direction of the machine body is connected to a link device 28 behind the traveling machine body 25 which is equipped with an engine 26 at the front and a driver's seat 29 arranged behind the engine. The riding paddy field work vehicle is supported such that it can be raised and lowered through the fertilizer tank 32, and is further equipped with a fertilization device that branches and pumps the fertilizer in the fertilizer tank 32 by a pump device 40 and supplies it to each fertilizer nozzle 46 via each switching valve 38. 21, the fertilizer tanks 32, 32 are arranged on both sides of the engine in the front part of the traveling aircraft 25, the pump device 40 is arranged on one side below the seat 27 of the driver's seat, and the link device 28 is provided with: The switching valves 38 are arranged in parallel in the lateral direction of the machine in correspondence with the arrangement of the fertilizer nozzles 40, and the fertilizer nozzles 46 are arranged in the vicinity of the working bodies 6 in the paddy field working section 30. It is characterized by being

(E) Effect Based on the above-mentioned configuration, the fertilizer in the fertilizer tanks 32, 32 located at the front of the machine is guided approximately horizontally and supplied to the pump device 40, and the pump device 40 further supplies the fertilizer to the working body ( For example, the fertilizer is divided into a number of branches according to the planter (planter) 6, and is fed under pressure to the rear, and is then sent to each fertilizer nozzle 46 via the switching valve 38, where it is applied in a striped manner along the planting stock etc. by the working body 6. Ru. In addition, when stopping the operation of the predetermined work body 6 at the edge of the field, etc., the changeover valve 38 arranged in the link device 28 section in a horizontal direction, at a position corresponding to the predetermined work body, is activated. By switching to the stop position, fertilization from the nozzle 46 corresponding to the work object is stopped.

Note that the numbers in brackets are for comparison with the drawings, but do not limit the structure in any way, and even if the numbers are the same, they will be described in generic terms corresponding to the scope of the claims. Due to the fact that
Some examples use different names from the examples shown below.

(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 device 28 so as to be able to rise and fall freely, and a large number of planters 6 are attached to the planting section 30.
...and a long seedling stand 31 on which about two and a half pine seedlings can be placed vertically.

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, Furthermore, from the hose 36, a step 37 of the driver's seat 29 is connected.
A suction hose 39 extends rearward at the bottom and communicates with a pump device 40 disposed below the step 37 in the lower portion of one side of the driver's seat 27. Furthermore, the pump device 4
0 to each fertilizer flow detection sensor 42 and switching valve 38, which are installed side by side in the lateral direction of the machine, through hoses 41 corresponding to the number of planting rows, and then to each hose 43 and dripping prevention valve 45.
It is guided to a nozzle 46 near the planter 6 through the. These pump device 40, flow detection sensor 42, switching valve 38, drip prevention valve 45, and nozzle 46 are located below the fertilizer head in the fertilizer tank 32, and each of these component parts 32, 40, 42, 38 is located below the fertilizer head in the fertilizer tank 32. , 45, 46 are
They are arranged approximately in a straight line from the front to the rear of the aircraft in accordance with the flow of fertilizer.

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. Further, 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 tank 32,
32, a pump device 40 is placed below the driver's seat 27, and a link device 28 is placed below the driver's seat 27.
Furthermore, each fertilizer nozzle 4 is arranged in the vicinity of each work body 6 in the paddy field work section 30.
6, each component of the fertilizer application device 32,
40, 38, and 46 can be distributed in the longitudinal direction of the body of the riding paddy field work vehicle, preventing the weight of the fertilization device from concentrating on a predetermined part of the body, and improving the front-to-back balance of the work vehicle. This allows highly accurate paddy field work and fertilization work to be carried out efficiently.

In addition, the fertilizer tanks 32, 32 are placed on the sides of the engine, the pump device 40 is placed below the seat 27, and the switching valve 38 is placed in the link device 28, so that each component of the fertilizer application device can be placed in the space of the aircraft. In addition to efficiently distributing the fertilizer tank 32 to the front of the machine, the hoses 39 and 41 connected to the pump device 40 can be piped in an inconspicuous manner. Although it is equipped with a fertilizing device, the appearance of the riding paddy field work vehicle 21 can be kept neat and clean.

Further, the pump device 40 is disposed on one side below the seat 27, and the switching valve 38 is connected to the link device 28.
Since the pump device 40 and the switching valve 38 can be easily accessed, the pump device 40 and the hoses can be easily and reliably cleaned by easily attaching and detaching the hoses connected to these parts by hand. It can be carried out.

In addition, since each switching valve 38 is arranged in the link device 28 in parallel in the lateral direction of the machine body in correspondence with the arrangement of each fertilizing nozzle 40, it is possible to arrange the switching valves 38 in parallel in the lateral direction of the machine body in the paddy field working section 30. These switching valves 38 can be associated with each of the working bodies 6, and the operator can turn back from the driver's seat 29 and operate the stop operation of each of these working bodies 6 and the operation of stopping fertilization using the switching valve 38 simultaneously and correspondingly. , operations can be performed easily and reliably while preventing erroneous operations.

[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... Working body (planter), 21... Riding paddy work vehicle (riding rice transplanter), 25... Traveling machine body, 26
...Engine, 30...Paddy field work department (planting department),
32...Fertilizer tank, 36, 37, 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 paddy field working section having a large number of working bodies arranged in parallel in the lateral direction of the aircraft is linked to the rear of a traveling aircraft in which an engine is mounted in the front and a driver's seat is arranged behind the engine. The riding paddy field work vehicle is equipped with a fertilization device that is supported so as to be freely raised and lowered via a device, and further includes a fertilization device that branches and pressure-feeds fertilizer from a fertilizer tank by a pump device and supplies it to each fertilizer nozzle via each switching valve. The fertilizer tank is arranged on both sides of the engine at the front of the traveling machine, the pump device is arranged on one side below the driver's seat, and each fertilizer nozzle is arranged near each work body in the paddy field work section. and the switching valves are arranged in parallel in the lateral direction of the machine body corresponding to the arrangement of the respective fertilizer nozzles in the link device. car.