JPS6335542Y2 - - Google Patents

Description

[Detailed Description of the Invention] The present invention is provided with a transverse feed mechanism that drives and reciprocates the seedling rest in the width direction thereof, and in conjunction with the transverse transport mechanism, when changing the moving direction of the seedling rest, The present invention relates to a seedling feeding device for a rice transplanter equipped with a vertical feeding mechanism for transferring pine-shaped seedlings placed there to the seedling take-out port side.

In the above device, as the properties of the pine-shaped seedlings change, slips occur between the vertical feeding mechanism and the pine-shaped seedlings, and the slip ratio changes, resulting in the seedlings being taken out by the planting claws. There was a drawback that the amount varied. Therefore, in the past, the actual vertical feed amount of the pine-shaped seedlings relative to the seedling tray was detected, and based on that, the seedling tray was displaced to change the relative position of the seedling tray and the planting claw, and the amount of seedlings to be taken out was changed. The amount of vertical feed operation of the vertical feed mechanism was simply changed. However, in the former case, whether it is a seedling stand or a planting claw, there is a disadvantage that the structure is complicated to displace it, and in the latter case, the time required to vertically feed the pine-shaped seedlings is short. is extended, and when changing the direction of movement of the seedling stand, the cross-feeding action by the cross-feeding mechanism must be almost completely stopped for a relatively long period of time, including the above-mentioned extended time, and the linkage structure with the cross-feeding mechanism is It had the disadvantage of complicating things.

In view of the above points, the purpose of the present invention is to make it possible to vertically feed pine-shaped seedlings in fixed amounts at a time with a simple structure, without changing the time required for vertically feeding them, regardless of changes in their properties. shall be.

Next, embodiments of the present invention will be described in detail based on illustrative drawings.

At the rear of the fuselage equipped with the control section 1, there is a seedling stand 3 that can be moved back and forth in the left-right direction of the fuselage along the sliding plate 2.
At the same time, a valve planting device 4 is provided for taking out a predetermined amount of block seedlings from the seedling take-out port 2a side provided on the sliding plate 2 at the bottom of the seedling stand 3 and planting them in the rice field. It is configured as a riding type rice transplanter for row planting.

On the seedling take-out side of the seedling tray 3, unit seedling trays 3a are positioned near both left and right ends of each unit to prevent pine-shaped seedlings from floating up from the seedling tray 3 and to prevent buckling of the pine-shaped seedlings. In addition, a first floating prevention member 6 is provided to prevent damage caused by this.

Further, brackets 7, 7 are protruded from the end of the seedling take-out side of the seedling platform 3, and the brackets 7, 7 receive the leaves of the pine-shaped seedlings, and the nail rotation trajectory side of the seedling planting device 4 is placed on the brackets 7, 7. A member 8 is provided to prevent the leaves from hanging down.

A mounting shaft 9 is mounted midway in the longitudinal direction of the brackets 7, 7, and the mounting shaft 9 and the droop prevention member 8
In addition, a second floating prevention member 10 for preventing pine-shaped seedlings from floating from the seedling stand 3 is detachably attached.

Each of the first floating prevention members 6 is swingably attached to a support shaft 11 installed in the width direction of the seedling stand 3, and has a coiled spring 1 between it and the support shaft 11.
2 is inserted to force the lower end side to swing downward, and in the absence of seedlings, the part F that acts on the pine-shaped seedlings is maintained in an inclined position where the upper side is further away from the seedling platform 3. This makes it easy to put in pine-shaped seedlings.
Then, when the pine-shaped seedlings come into contact with the bed soil as they are placed and supplied, the first floating prevention member 6 is configured to automatically switch to the working position in which the operating portion F is aligned with the bed soil of the pine-shaped seedlings. There is.

As shown in FIG. 4, the part of the action part F of the first float prevention member 6 on the side of the seedling take-out port 2a is configured to have a vertically elongated cross-sectional shape, and in the action state, the part of the action part F of the first floating prevention member 6 on the side of the seedling take-out port 2a is configured to have a vertically elongated shape, so that the pine-like seedlings can be held against the seedling stand 3 in the action state. It is configured to suppress movement in the width direction.

A roller 13 is rotatably mounted on the second flotation prevention member 10, so as to smoothly feed the pine-shaped seedlings vertically while also suppressing their movement in the width direction with respect to the seedling table 3. It is structured as follows.

Numeral 14 in the figure is a seedling stopper provided on each unit seedling rack 3a, and when planting fractional rows, the pine-shaped seedlings are pulled up and held to a position where the vertical feed mechanism 15 does not act, and the planting claws This is to stop the supply of seedlings to 16...

To configure the vertical feeding mechanism 15, a support shaft 17 is rotatably provided on the back side of each unit seedling stand 3a, and the support shafts 17 are separated by a predetermined interval in the longitudinal direction. An opening 18 made in the mounting table 3...
A star wheel 19 is provided so as to penetrate into the bed soil of the pine-shaped seedlings through the star wheel 19, and an electric motor M is interlocked with the support shaft 17.

A transverse feed shaft 20 connected to the seedling table 3 is slidably provided in a planting mechanism case 21,
A piece member 22 attached to the horizontal feed shaft 20
is screwed onto a screw shaft 23 rotatably attached to the planting mechanism case 21 to form the lateral feed mechanism 2.
4, and is configured to drive and reciprocate the seedling stand 3 in the left-right direction of the machine by rotation of the screw shaft 23. Then, limit switches L ₁ and L ₂ are installed at two predetermined locations in the longitudinal direction of the lateral feed shaft 20,
In reciprocating movement of the seedling stand 3, the circuit C for the motor M is closed when the direction is changed, and the vertical feed mechanism 15 is driven.

A rotating body 25 with claws is provided on the back side of each unit seedling platform 3a so that the claws can freely rotate so that the claws protrude into the soil of the pine-shaped seedlings placed thereon. 25 is a device 2 for detecting the amount of rotation.
6 is attached, and is configured to detect the actual vertical feed movement amount of the pine-shaped seedling. The detection device 26
For example, protrusions are provided at predetermined intervals of 10 degrees in the circumferential direction of the rotating body 25, pulses are oscillated as the protrusions pass, and the rotation angle is detected from the number of pulses. Various means can be employed, such as detecting the amount of vertical feed movement based on the corner.

Inputting the signal from the vertical feed amount detection device 26 and the signal from the setting device 27 to the first calculation circuit 28,
The slip rate between the vertical feed mechanism 15 and the pine-shaped seedlings due to changes in the properties of the bed soil etc. of the pine-shaped seedlings is calculated, and the signal from the first calculation circuit 28 is inputted to the second calculation circuit 29. , calculate the speed increasing ratio for the motor M based on the slip rate, and calculate the second
The control mechanism 32 is configured to input a command signal from the arithmetic circuit 29 to the operation circuit 30 and automatically operate the transmission section 31 of the motor M by the operation circuit 30. Regardless of the slippage between the seedlings and the seedlings, for example, if the slip rate is 25%, the speed of the motor M is set to 1.25 times the speed at that time. is configured to ensure vertical feeding by a set amount within a predetermined time.

The first and second arithmetic circuits 28 and 29 can be compactly and easily processed using a microcomputer.

In summary, the present invention provides the above-mentioned seedling supply device for a rice transplanter, in which a device 26 for detecting the vertical movement of the pine-shaped seedlings with respect to the seedling table 3 is attached, and the detected movement amount of the detection device 26 is also provided. The present invention is characterized in that it is provided with a control mechanism 32 that changes the vertical feed speed of the vertical feed mechanism 15 based on.

In other words, since the degree of slip is detected by the detection device 26 and the vertical feed speed of the vertical feed mechanism 15 is changed based on it, the time required for vertical feed does not change regardless of changes in the properties of the pine-shaped seedlings. It is possible to reliably vertically feed the pine-shaped seedlings by a predetermined amount within a constant or almost constant time, and furthermore, for example, by driving the vertical feeding mechanism 15 with an electric motor M,
Even with a simple structure, it is possible to change the vertical feeding speed, and as a whole, it is possible to provide a device with a simple structure that can vertically feed pine-shaped seedlings in fixed quantities regardless of changes in their properties.

[Brief explanation of the drawing]

The drawings illustrate an embodiment of the seedling feeding device for a rice transplanter according to the present invention, and FIG. 1 is an overall side view of the riding-type rice transplanter, FIG. 2 is a partially cutaway front view of the main parts, and FIG. 2 is a cross-sectional view taken along the line 2, FIG. 4 is a perspective view of the lower end side of the first floating prevention member, FIG. 5 is a bottom view of the second floating prevention member, and FIG. 6 is a vertical cross-section showing the traverse feed mechanism. 7 are block diagrams showing the control mechanism. 2a... Seedling take-out port, 3... Seedling stand, 15...
...vertical feed mechanism, 24...horizontal feed mechanism, 26...detection device, 32...control mechanism.

Claims (1)

[Scope of utility model registration request] A transverse feed mechanism 24 is provided to drive and reciprocate the seedling rest 3 in its width direction, and in conjunction with the transverse transport mechanism 24, when the direction of movement of the seedling rest 3 is changed, the mats placed there are This is a seedling feeding device for a rice transplanter equipped with a vertical feeding mechanism 15 for transferring pine-shaped seedlings to the side of the seedling take-out port 2a, and is attached with a device 26 for detecting the amount of vertical feeding movement of pine-shaped seedlings with respect to the seedling table 3. The seedling supply device for a rice transplanter is further provided with a control mechanism 32 that changes the vertical feed speed of the vertical feed mechanism 15 based on the amount of movement detected by the detection device 26.