JPS599548Y2 - rice transplanter - Google Patents

Description

[Detailed Description of the Invention] The present invention relates to a rice transplanter equipped with a planting device that has a seedling stand that can be raised and lowered.

Generally, in this type of rice transplanter, when the seedlings on the seedling platform become dry during operation, the resistance between the seedling mat and the seedling platform becomes large and the seedlings are not sent to the planting section below the seedling platform. This has the disadvantage that seedlings cannot be reliably planted, resulting in problems such as missing plants, drying of seedlings, and uneven number of plants.

For this reason, workers sprinkle water on the seedlings as needed during work to ensure that the seedlings on the seedling stand are smoothly transported to the planting area, but this is a nuisance for the workers. Not only
The rice planting work had to be interrupted each time, making the rice planting work extremely inefficient.

In addition, in a structure in which a convex portion is formed on the upper surface of the seedling table, the seedling mat is supported by the convex portion, and the feeding of the seedling mat is facilitated, water is supplied to the convex portion and the seedling mat is in contact with the convex portion. When water is supplied to the seedling mat, the part of the seedling mat in contact with the convex part becomes soft and deformed by the weight of the seedling mat, and there is a concern that the lower surface of the seedling mat may come into close contact with the upper surface of the seedling stand. It was difficult to adjust the water supply to prevent deformation.

Therefore, the present invention is equipped with a seedling stand that is tilted in one direction and supported so that the seedling mat slides downward toward the lower end of the slope, and a plurality of convex portions that abut the lower surface of the seedling mat. and a plurality of concave portions formed between the respective convex portions in the vertical direction on the upper surface of the seedling platform, wherein a water discharging member for supplying water to the seedling platform through the water discharging hole is arranged on the upper end side of the seedling platform. Provided on the bottom surface,
The water discharging member is connected to a water tank provided at a higher position than the seedling platform that has been lowered to the rice planting position, and the water discharging hole is provided to supply water from the lower surface of the seedling platform to the recessed portion of the upper surface of the seedling platform. It is opened in a recess on the upper end of the table, and the recess can be used as a gutter to supply water to the upper surface of the seedling table, and the water on the top of the seedling table can be quickly drained through the gap between the recess and the lower surface of the seedling mat. This can prevent the seedling mat from deforming due to excessive water supply and partial water supply, etc., and can also prevent the lower surface of the seedling mat that is in contact with the convex portions from flooding by flooding the lower surface of the seedling mat facing the four parts. The object of the present invention is to provide a rice transplanter that can properly moisten the seedling mat by capillary action, prevent the seedling mat from moving laterally or be cut midway, and can maintain smooth feeding of the seedling mat. .

Hereinafter, an embodiment in which the present invention is applied to a riding rice transplanter will be described in detail. Fig. 1 is a left side view of the rice transplanter, and in the figure 1 is a running body, and this running body 1 is comprised of a front body 2 and a rear body. A vehicle body 3 and front and rear wheels 4, 4 for running in paddy fields that support the vehicle bodies 2, 3.
, 5. Each of the vehicle bodies 2 and 3 is provided with pivot pins 8 and 8 between the brackets 6 and 7 extending toward the other vehicle body, so that each of the vehicle bodies 2 and 3 is horizontally moved. It is designed to be bendable.

Further, a driving transmission (not shown) is built into the front body 2 shaped like a closed box, and a steering device 10 including an operation handle 9 (tilt handle) is installed at the top of the body 2. Further, a driver's seat 11 is provided behind the steering wheel 9, and this driver's seat 11 is attached to a gate-shaped safety frame 1.
It is attached to the front vehicle body 2 via 2.

On the other hand, a support stand 13 is connected to the rear body 3 shaped like a closed box, and an air-cooled four-stroke gasoline engine 14 is mounted on the support stand 13. A spare seedling platform 16 on which preliminary seedlings are placed is positioned, and the seedling platform 16 is rotatably mounted on the frame 1.
It is attached to 2.

The power transmission between the front and rear vehicle bodies 2, 3 is carried out between the positions of the upper and lower pivot pins 8, 8 mentioned above.
two pairs of barfield type universal joint shafts 17 protruding from 3;
．． 18, while holding the support stand 13.
A rear hitch 19 to which a trailer or the like is connected is provided at the rear end of the vehicle.

A three-point link mechanism 20 is provided in front of the front vehicle body 2 for traveling.
The planting device 21 is installed so as to be movable up and down.

Here, the planting device 21 includes a traveling float 22, a planting transmission case 23, a seedling stand 24 with a low front and rear height that moves back and forth from side to side, and a planting claw that takes out and plants one seedling. 25 mag.

Further, the three-point link mechanism 20 includes a top link 26 and lower links 27, 27, and supports the transmission case 23 on the front body 2 via these non-links 26, 27, and supports the transmission case 23 on the front body 2. The lift arm 28 is connected to a hydraulic device (not shown) attached to the lift rod 2 between the tip of the arm 28 and the lower links 27, 27
9 and 29 are stretched, and the entire planting device 21 is raised and lowered.

Furthermore, the PTO shaft protruding from the PTO mission case in the vehicle body 2 is connected to the planting device 2 via the telescopic shaft 30.
It is configured to be interlocked and connected to an input shaft protruding from the gear case 31 on the first side, and to transmit power to each part of the planting device 21.

By the way, the seedling mounting table 24 has an uneven surface on which the seedlings are placed, and by placing the seedlings on the upper surface of the raised portion 24a, the sliding resistance of the seedlings is reduced, and the seedlings are placed in the lower planting area. It is designed to allow the slider to slide.

Further, as shown in FIG. 3, an auxiliary seedling mounting table 32 is detachably attached to the upper end of the seedling mounting table 24 in an extended shape.

Next, the watering device for the seedling stand 24, which is the core of the present invention, will be explained with reference to FIGS. water pipe), and a pair of water supply devices, that is, a water tank 34, for appropriately supplying water to the water discharge member 33. 34, and an electric pump 35 which is interposed between the water discharging member 33 and the water tanks 34, 34 and forcibly conveys the water in the tank 34 to the water discharging member 33.

The water tank 34 is connected to the left and right front wheels 4 for running in paddy fields,
The tank 34 is connected to the water discharge member 33 via a water collection pipe 37, a main valve 38, a water supply valve 39, and a flexible hose 40. The pump 35 is interposed between the pumps 40 and 40.

The water supply valve 39 is provided so that the water sent from the water tank 34 via the water collection pipe 37 and the main valve 38 can be suitably supplied or stopped for each strip.

The water discharging member 33 has a main body shaped like a pipe, and is attached to the back side of the seedling stand 24 at the upper end of the seedling stand 24, that is, at a position slightly below the attachment position of the auxiliary seedling stand 32, through a fastener 41. It is secured with a screw.

This water discharging member 33 has a recess 24 on the surface side of the seedling stand 24.
A plurality of water outlets 42 are provided in a protruding manner corresponding to b, and the tips of the water outlets 42 are connected to the recess 24 of the seedling stand 24.
b faces along this slope, and the water in the water discharge member 33 discharged from the water discharge port 42 is configured to flow into the recess 24b and flow downward along the slope of the recess 24b. ing.

Next, the relationship between the water supply system to the water tank 34 and the water supply system from the water tank 34 to the water discharging member 33 will be explained with reference to FIG. In order to receive water, a water supply port 43 with a filter is connected to the rice field or reservoir, etc., and this water supply port 43 is attached to, for example, the float 22, and the water is supplied to the water tank 34 through the water supply port 43. An electric pump 35 for forced water supply is installed in between.

Also, in the middle of the connection between the water supply port 43 and the pump 35, and between the pump 35 and the tank 34, first and second switching valves 44, which respectively change the flow direction with a lever 46, are provided.
45, and when switched, the first switching valve 44
In the second switching valve 45, water is configured to flow from the water tank 34 to the pump 35, and from the pump 35 to the water discharge member 33 in the second switching valve 45.

In other words, 35 electric pumps are used to supply water to the water tank 34 or to the water tank 3 by switching the valves 44 and 45.
4 to the water discharge member 33.

Further, the lever 46 is interlocked and connected to the lift arm 28, and the first and second switching valves 44, 45 are connected to the pump 3 from the tank 34 when the lift arm 28 is lowered.
5 to the water discharge member 33, and when the lift arm 28 is raised, the water is switched so that water flows from the water supply port 43 to the water tank 34 via the pump 35.

It should be noted that the lever 46 is configured so that when the lift arm 28 is lowered, the switching operation can be performed manually as appropriate.

Next, to explain the starting and stopping operation of the pump 35, the motor 47 that drives the pump 35 is operated by a limit switch 48.
The limit switch 48 is a normally closed contact type and is installed near the lift arm 28, and when the lift arm 28 is lowered, the switch 48 is connected to the battery 50 via a main switch 49. O
When the lift arm 28 is raised, the actuator of the switch 48 is pressed by the arm 28 to turn it off.
It is designed to switch to F and stop the pump 35.

Note that 51 is a manual switch for tank water supply provided in a parallel circuit with the switch 48 so that water can be appropriately supplied to the tank 34 even when the pump 35 is stopped when the lift arm 28 is raised.

By the way, a float 52 for detecting the amount of water is provided in the water tank 34, and the float 52 is connected to the tank 34.
The limit switch 53 is configured to be turned on when the water is full.

The limit switch 53 is electrically connected to the battery 50, and sounds a buzzer 54 to notify when the tank 34 is full of water.

The present invention is structured as described above, and its operation will be explained below. When the main switch 49 is turned on and the planting device 21 is lowered to perform planting work, the lift arm 28 is moved downward. O of the limit switch 48
When the N operation is performed, the pump 35 is driven via the motor 47, and the lever 46 is also linked to the lift arm 28 to move the first
and second switching valve 44. 45, the flow path is from the tank 34 to the pump 35 in the first switching valve 44, and from the pump 35 to the water discharging member 3 in the second switching valve.
Switch so that it flows to 3.

Therefore, by driving the pump 35, the water in the tank 34 is forcibly sent to the water discharging member 33 via the main valve 38 and the water supply valve 39, and the water reaching the water discharging member 33 is transferred to the seedling stand 24.
The water is discharged to the outside through water discharge ports 42 provided corresponding to each of the recesses 24b.

In other words, the water is poured into the recess 24b of the seedling platform 24.The water poured into the recess 24b flows down along the downward slope of the seedling platform 24 and at the same time wets the bottom of the seedling mat, causing the seedling mat and the seedlings to dry. By reducing the frictional resistance between the platforms 24,
It acts to smoothly move the seedling mat on the seedling platform 24.

Note that if any row is not planted on this seedling stand 24 during watering, the water supply valve 39 corresponding to that row is operated to stop watering on that row, thereby eliminating unnecessary watering. This will stop the use of water.

Further, when the water in the water tank 34 decreases during the water sprinkling and a need for water supply arises, the operator switches the lever 46 and operates the first and second switching valves 45 to switch the flow path. is switched so that it communicates with the tank 34 from the water supply port 43 via the pump 35, and the tank 34 is supplied with water,
When the tank 34 becomes full of water, the float 52 activates the mitt switch 53 to sound the buzzer 54 to notify the operator that the water is full.

Then, when the lever 46 is switched to its original state, the flow path runs from the tank 34 to the water discharging member 33 via the pump 35.

Returning to the original flow path again, the water in the tank 34 is sent to the water discharge member 33.

Next, when the planting device 21 is raised on a headland or the like, the lever 46 is also switched in the direction of the arrow in FIG. 4 in conjunction with the lift arm 28, and the first and second switching valves 44, 45 The flow path is connected to the supply port 43 and the pump 35.
At the same time as switching to the flow path connecting the tank 34, the smit switch 48 is turned off to stop driving the pump 35, and the water sprinkling by the water discharging member 33 is stopped.

Further, when it is necessary to supply water to the tank 34 when the planting device 21 is raised, the operator turns on the water supply switch 51 to drive the pump 35 via the motor 47 and Water can be supplied into the tank 34 from 43.

FIG. 5 shows a modification of the structure for sprinkling water from the water discharging member 33 to the seedling stand 24, in which the concave portion 24 of the seedling stand 24
A notch is formed on the bottom surface of B, and the tip of the notch piece 24C is brought into contact with the lower outer side of the water discharging member 33 via a sealing member 55, and a discharge hole 56 is opened in the water discharging member 33 at an upper position. , any of the above structures may be used, and the same effects as those of the above-mentioned embodiments can be obtained.

Therefore, the same numbers are given to the same parts as in the previous embodiment, and detailed explanation thereof will be omitted.

In the above embodiment, the mitt switch 53 is activated by the action of the float 52 in the water tank 34, and the buzzer 5 is activated.
4, the present invention uses the limit switch 53 to directly stop the drive of the pump 35 or to automatically turn on the first and second pumps when the water tank 34 is empty or full during work. Switching valve 44. 45 may be switched so that water supply and water supply can be performed alternately and continuously.

Furthermore, in the above-mentioned embodiment, the water in the water tank 34 was forcibly fed to the water discharging member 33;
By installing the water discharging member 33 on the upper part of the fender 36 as in the above embodiment, when the planting device 21 is lowered, the water discharging member 33 is located below the tank 34, and when the planting device 21 is rising, the water discharging member 33 is located below the tank 34. Because it is in a higher position,
The water tank 34 and the water discharging member 33 are simply directly connected, and when the planting device 21 is lowered, the water in the tank 34 is allowed to naturally flow down to the water discharging member 33 due to the water level difference, and when the planting device 21 is rising, Of course, it is also possible to have a structure in which the water flowing down to the water discharge member 33 is naturally stopped, and this structure is extremely simple and can be easily incorporated without changing the conventional structure.

As is clear from the above embodiments, the present invention is equipped with a seedling platform 24 that supports the seedling mat tilted in one direction and slides the seedling mat downward toward the lower end of this inclination, and at the same time, the seedling mat is brought into contact with the lower surface of the seedling mat. a plurality of convex portions 24 a... and each of the convex portions 24
In this structure, a plurality of recesses 24 and b are provided in the vertical direction on the upper surface of the seedling platform 24, and the seedling platform 24 is provided with water discharge holes 42. 56 is provided on the lower surface of the upper end side of the seedling platform 24, and the water discharging member 33 is communicated with a water tank 34 provided at a higher position than the seedling platform 24 lowered to the rice planting position. The water discharge holes 42 and 56 for supplying water from the lower surface of the seedling stand 24 to the recess 24b on the upper surface of the seedling stand 24 are connected to the recess 24 on the upper end side of the seedling stand 24.
The recess 24 b can be used as a gutter to supply water to the upper surface of the seedling stand 24, and the recess 24
The water on the top surface of the seedling platform 24 can be quickly moved and drained through the gap between the bottom surface of the seedling mat and the bottom surface of the seedling mat. By flooding the lower surface of the seedling mat facing the concave portion 24b, the lower surface of the seedling mat in contact with the convex portion 24a can be appropriately moistened by capillary action.
It is possible to prevent the seedling mat from moving laterally or cutting it in the middle, it is possible to maintain smooth feeding of the seedling mat, and the water discharging member 33 and the water tank 34 can be easily arranged without interfering with seedling succession work etc. by the water discharging member 33. It has remarkable effects such as being easy to install with a simple structure, being extremely functional and extremely practical.

[Brief explanation of the drawing]

Figure 1 is a side view of the rice transplanter according to the present invention, Figure 2 is its plan view, Figure 3 is a partial explanatory diagram of the main parts, Figure 4 is an explanatory diagram of the flow path system of the main parts, and Figure 5 is FIG. 4 is an explanatory diagram showing a modified structure in FIG. 3; 21... Planting device, 24... Seedling stand, 33... Water discharge member, 34... Water supply device (water tank).

Claims (1)

[Scope of utility model registration request] A seedling mounting stand 24 is installed to support the seedling mat by tilting it in one direction and slide the seedling mat downward toward the lower end of the slope, and a plurality of convex portions 24 a to which the lower surface of the seedling mat comes into contact; Each of the convex portions 24a...a plurality of concave portions 24 formed between the convex portions 24a...
b... is provided in the vertical direction on the upper surface of the seedling table 24, and a water discharge member 33 for sending water to the seedling table 24 through the water discharge holes 42, 56 is provided on the lower surface of the upper end side of the seedling table 24. ,
The water discharge hole communicates the water discharge member 33 with a water tank 34 provided at a higher position than the seedling platform 24 that has been lowered to the rice planting position, and supplies water from the lower surface of the seedling platform 24 to the recess 24b on the upper surface of the seedling platform 24. 42 and 56 are opened in the recess 24b on the upper end side of the seedling stand 24.