JPH06217617A - Seedling feeder of seedling transplanter - Google Patents

Abstract

PURPOSE:To simplify and downsize the structure of a seedling supplying apparatus and to improve the efficiency of the seedling supplying work to a supplementary seedling table. CONSTITUTION:A supplementary seedling table 39 is attached to the upper part of the seedling container 19 in such a manner as to be movable in the inclined state and the seedling shelf 57 of the supplementary seedling table 39 is equipped with a seedling stopper 59 to prevent for the seedlings to slide down and seedlings are placed on the seedling shelf 57 together with a seedling pickup board 80. To the upper part of the seedling container 19 a seedling lifting member 40 is attached in order to lift up the seedlings and to release the stopper when the supplementary seedling table 39 is moved to the specified position. The supplementary seedling table is provided with a carrying structure 60 for the seedling supporting member, which holds and slides the seedling pickup board 80 to the position with no interference with the seedling lifting member 40 when the seedlings on the seedling pickup board 80 is used up.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a seedling feeding device for a seedling planting machine for planting seedlings in a field.

[0002]

2. Description of the Related Art Conventionally, the problems to be solved by the invention
The seedling planting machine is arranged so that a seedling tank on which seedlings are placed is tilted, the seedlings are taken out from the lower end of the seedling tank one by one by a transplanting device, and the seedlings are planted in the field by the transplanting device. When the number of seedlings in the seedling tank has decreased, workers have been replenishing the seedling tank with auxiliary seedlings.

However, in such a case, the work efficiency was not good because the planting work had to be temporarily stopped.

Therefore, when the number of seedlings in the seedling tank has decreased, a seedling feeding device has been devised which feeds the seedlings of an auxiliary seedling stand mounted horizontally to the seedling planting machine to the seedling tank by a feeder. (See, for example, Japanese Utility Model Laid-Open No. 55-38890) There is a problem that the structure of the seedling planting machine becomes complicated and the size becomes large because it is necessary to dispose the feeding device.

Further, conventionally, seedlings are scooped out from a seedling box by a seedling lapping plate, and the seedlings are placed on an auxiliary seedling stand in a state of being separated from the seedling lapping plate, so that seedlings can be efficiently supplied. There wasn't.

The present invention has been devised in view of such problems of the prior art.

[0007]

DISCLOSURE OF THE INVENTION According to the present invention, an auxiliary seedling stand is movably attached to the upper part of a tilted seedling tank so as to prevent the seedling from sliding down on a seedling shelf of the auxiliary seedling stand. A seedling feeding device of a seedling planting machine that forms a seedling together with a seedling support member on a seedling shelf, and lifts the seedling when an auxiliary seedling stand moves to a predetermined position at the upper end of the seedling tank. While attaching a seedling lifting member that releases the stopper function, a seedling support member slide mechanism that moves backward while holding the seedling support member to a position where it does not interfere with the seedling lifting member when the seedling support member runs out on the auxiliary seedling base. It is characterized by being attached.

[0008]

As described above, when the auxiliary seedling stand moves to a predetermined position, the seedling lifting member lifts the seedling and releases the stopper function of the seedling stopper. At this time, since the seedling support member is held by the seedling support member slide mechanism, only the seedling slides to the seedling tank side by its own weight. When the seedling moves from the auxiliary seedling stand to the seedling tank side, the seedling support member slide mechanism retracts the seedling support member to a position where it does not interfere with the seedling lifting member. It can be moved.

[0009]

Embodiments of the present invention will be described in detail below with reference to the drawings. FIG. 1 is a side view of the seedling planting machine 1, and FIG. 2 is an enlarged view of a main part thereof. In these figures, 2 is a machine frame. An engine 3 is arranged at the front part (the left end part in FIG. 1) of the body frame 2, and a pair of left and right front wheels 5 attached to both sides of the front mission case 4 by the engine 3,
5 and a pair of left and right rear wheels 7 mounted on both sides of the rear transmission case 6 are driven. Then, the front wheels 5 and 5 are steered by the steering wheel 8. Reference numeral 9 denotes a control seat, and the control seat 9 is attached to a leg portion 10 fixed to the body frame 2 so as to be able to tilt forward.

An elevating link 11 and a hydraulic cylinder 12 are attached to the rear portion (right end in FIG. 1) of the machine body frame 2, and an arm 14 integral with the upper link 13 of the elevating link 11 is provided.
Is connected to the hydraulic cylinder 12, and the lifting link 11 is operated by the hydraulic cylinder 12. The vertical link 15 of the elevating link 11 is connected to the seedling planting machine 18 via the rolling shaft 16 and the rolling guide portion 17 fixed to the conductive case 23 of the seedling planting machine 18. The machine 18 can roll around the rolling shaft 16. Further, spare seedling stands 2a are provided on the left and right sides of the machine body frame 2, respectively.

The seedling planting machine 18 has a seedling tank 19 for placing seedlings in an inclined state, and a drive mechanism 21 for reciprocating the seedling tank 19 in the left-right direction of the seedling planting machine 1 and for activating the transplanting device 20. The seedling tank 19 includes a support frame 22 that slidably supports the lateral width of the machine body (see FIG. 3).

Of these, the drive mechanism portion 21 is the transmission case 2
3 and branch case 24 branching from this transmission case 23
And a drive mechanism (not shown) housed in the transmission case 23.
And a seedling tank lateral movement rod 25 that reciprocates in the left-right direction in the figure, and the drive mechanism is connected to the engine 3 via a power transmission shaft or the like (not shown). Then, a pair of left and right forked arms 2 are provided on both ends of the seedling tank lateral movement rod 25.
6 is attached, and the tip of the bifurcated arm 26 is fixed to the lower end and the middle of the seedling tank 19.

As shown in FIGS. 2 and 3, the support frame 22 has four columns 27, 27, 28, 28 extending from the transmission case 23 upward in the figure, and these four columns 27, 27.
First beam 29 fixed to 27, 28, 28 and second beam 30 whose ends are fixed to columns 27 at both left and right ends, and branch case 2
4 and a guide frame 31 for the seedling tank which is fixed by being hung on the upper surface side. The first beam 29 is engaged with the rollers 32, 32 attached to the seedling tank 19,
A roller 33 attached to the second beam 30 is engaged with an arc-shaped rolling guide frame 34. The rolling guide frame 34 is used for the vertical link 15 of the lifting link 11.
It is fixed to the tip of a support arm 35 which is fixed to, and constitutes the rolling guide portion 17 together with the support arm 35.

The seedling tank 19 is adapted to accommodate a plurality of mat-shaped seedlings 36. A seedling tank frame 19a is fixedly provided on the back side of the seedling tank 19. A pair of support arms 37 are fixed to the lower surface of the upper end of each block (each row), and a parallel link mechanism 38 is attached to the tip of the support arm 37 (see FIG. 4). An auxiliary seedling stand 39 is attached to the other end of the parallel link mechanism 38. Further, as shown in FIG. 5, a plurality of seedling lifting members 40 are attached to the upper end of the seedling tank 19. The seedling lifting member 40 is a support shaft 4 fixed to the support arm 37.
It is pivotally supported by 2, and is biased by a spring 43 so as to rotate clockwise in FIG. In addition, the seedling lifting member 40 is restricted from rotating counterclockwise in FIG. 2 by a stopper 44 fixed to the support arm 37 so that the upper surface thereof is flush with the seedling slip surface 45 of the seedling tank 19. It is like this. Further, in the vicinity of the seedling lifting member 40 of the seedling tank 19, the first seedling reduction detecting the passage of the rear end of the seedling from the auxiliary seedling stand 39, that is, the decrease of the seedling 36 of the seedling tank 19 is detected. Sensor 47 and seedling lifting member 40
A seedling supply operation stop position sensor 49 for controlling the operation of a motor 48 which will be described later is attached and detached, and a second seedling reduction sensor SW is attached near the lower end of the seedling tank 19. .

As shown in FIGS. 2 and 4, the parallel link mechanism 38 includes an upper arm 50, a lower arm 51, and a support arm 3.
7 and the side plate 52, and the ends of the upper arm 50 and the lower arm 51 are pivotally supported by support shafts 53, 53, 54, 54. Then, the upper arm 5 of the parallel link mechanism 38
A fan-shaped gear 55 is fixed to a support shaft 53 that pivots 0, and the gear 55 is meshed with a pinion gear 56 driven by a motor 48 fixed to a support arm 37. Therefore, the parallel link mechanism 38 rotates about the supporting shafts 53, 53 by a predetermined angle when the motor 48 is driven.

The auxiliary seedling stand 39 is provided with seedling shelves 57 (upper seedling shelves, middle seedling shelves, and lower seedling shelves), and the auxiliary seedlings 36 on the mat are used as seedling support plates on these matting shelves 57. 80
(See FIG. 6), the seedling shelves 57 are attached to the side plates 52 of the parallel link mechanism 38 so as to incline like the seedling tanks 19. And the auxiliary stand 39
In order to prevent the seedlings 36 from slipping off even when the respective seedling shelves 57 are inclined, a plurality of seedling stoppers 59 are formed side by side in the width direction at one end thereof (see FIG. 5). This seedling stopper 5
As shown in FIG. 2, for example, 9 is configured in an L-shape with the hook portion 59a facing upward, and is located below the upper surface of the seedling lifting member 40 when the auxiliary seedling stand 39 is stopped at a predetermined position. It is set to do so. Therefore, the stopper function of the seedling stopper 59 is automatically released when the auxiliary seedling stand 39 moves to a predetermined position. As a result, the seedlings 36 on the auxiliary seedling stand 39 slide down from the auxiliary seedling stand 39 side to the seedling tank 19 side by their own weight while being supported by the seedling lifting member 40.

Reference numeral 60 denotes a seedling support member slide mechanism attached to the lower surface of each seedling rack 57 of the auxiliary seedling stand 39. The seedling support member sliding mechanism 60 includes a pair of brackets 61 and 61 fixed to the lower surface of the seedling shelf 57, a slide rod 62 slidably supported by the brackets 61, and a hook portion 62a at the tip, and the slide rod. 2 and a spring 63 that constantly urges the slider 62 to the upper left in FIG.
It is adapted to engage with the step portion 64 of 0. The seedling support member slide mechanism 60 configured in this manner has the spring 63 compressed (the upper state of FIG. 2) when the seedlings are placed on the seedling shelf 57, but When no seedling is placed on the top, the spring 63 is in an extended state (the middle and lower states in FIG. 2), and the seedling take-up plate 80 is slid (retreated) to a position where it does not interfere with the seedling lifting member 40.

1 and 2 show a mode in which seedling tanks 19 are sequentially replenished from the lowest seedling shelf 57,
The seedlings of the lowermost and middle seedling shelves 57 are already supplied to the seedling tank 19 side, and the seedlings 36 of the uppermost seedling shelf 57 are already supplied to the seedling tank 19 side.

Reference numeral 65 is a stopper, and this stopper 65
Is fixed to the lower surface of the lowest seedling shelf 57. The stopper 65 abuts the upper arm 50 of the parallel link mechanism 38 at the lowermost position (position in FIG. 2) of the auxiliary seedling stand 39, and restricts the movement of the parallel link mechanism 38.

In the above structure, the auxiliary seedling stand 39 provided with the seedling support member sliding mechanism 60, the motor 48 for operating the auxiliary seedling stand 39, the parallel link mechanism 38, etc.
6 is composed. 67 is a leveling float, and this leveling float 67 is linked to the transmission case 23 by a link 68.

According to the structure of the above embodiment, the transplanting device 20 takes out the seedlings one by one from the lower end of the seedling tank 19 that reciprocates left and right by moving the seedling planting machine 1 at a predetermined speed and transplanting the seedlings. The device 20 plants seedlings in the field at predetermined intervals.

Each of the shelves 57 of the auxiliary seedling stand 39 resists the restoring force of the spring 62 due to the weight of the seedlings and the hook portion 62.
The stopper 59 prevents the seedlings from slipping off at a position where a and the step portion 64 are engaged with each other. Seedling tank 1 here
As the amount of the 9 seedlings decreases, the seedlings on the lowermost seedling shelf 57 of the auxiliary seedling stand 39 move to the seedling tank 19 side by their own weight, and the seedlings are supplied. When the seedlings on the seedling rack 57 are exhausted, the seedling lapping plate 80 causes the seedling support member slide mechanism 60 to move the spring 6
It is slid to a position where it does not interfere with the seedling lifting member 40 by the restoring force of 3. When the seedling that has moved to the seedling tank 19 side descends on the seedling slip surface 45 of the seedling tank 19 and the entire seedling passes through the seedling lifting member 40, the seedling lifting member 4
Reference numeral 0 denotes a spring 43 which rotates clockwise in FIG. 2 to turn off the seedling supply operation stop position sensor 49.

When the seedling further descends on the seedling slip surface 45 of the seedling tank 19 and the seedling reduction sensor 47 is turned off, the motor 48 rotates and the motor 48 operates the parallel link mechanism 38 as shown in FIG.
It is rotated counterclockwise and the auxiliary seedling stand 39 is lowered.

When the auxiliary seedling stand 39 descends to a predetermined position, the seedling lifting mechanism 40 lifts the seedling plate 80 and the seedling, and the stopper mechanism of the seedling stopper 59 of the auxiliary seedling stand 39 is released. It automatically moves to the seedling tank 19 side by its own weight. At this time, since the seedling lifting member 40 rotates counterclockwise to turn on the seedling supply operation stop position sensor 49, the seedling supply operation stop position sensor 4 is turned on.
Based on the ON signal of 9, the motor 48 stops. Then, when the seedling further descends on the seedling slip surface 45 of the seedling tank 19 by its own weight, the seedling decrease sensor 47 is activated by the seedling.

When the seedling removing plate 80 runs out of seedlings, the seedling supporting member slide mechanism 60 moves the seedling removing plate 80 to the seedling lifting member 40.
Slide it while holding it to the position where it does not interfere with.

Similarly, when the amount of seedlings in the seedling tank 19 decreases, the seedling supply device 66 operates based on the signals of the quantity sensors 47 and 49, and the uppermost seedling 36 of the auxiliary seedling stand 39 is transferred to the seedling tank 19. Supply (state of FIG. 2). Then, the seedlings in the uppermost stage are supplied to the seedling tank 19, the seedlings are reduced, and
When the seedling reduction switch SW is turned off, an alarm buzzer sounds. At this time, the operator who operates the rice transplanter is
The seedlings placed on the seedling strips on a are replenished to the seedling tanks 19, and the seedling strips are also replenished on the auxiliary seedling stand 39. The auxiliary seedling stand 39 is raised until it becomes substantially flush with the slip surface of the tank 19.

As described above, according to this embodiment, the seedling stopper 59 is attached to one end of the seedling shelf 57 of the auxiliary seedling stand 39 which is attached to the upper portion of the seedling tank 19 so as to prevent the seedling from sliding down, and the auxiliary seedling. When the platform 39 moves to a predetermined position,
Seedling lifting member 40 attached to the upper end of the seedling tank 19
Is configured to lift the seedling take-up plate 80 and the seedling to release the stopper function of the seedling stopper 59, so that the seedling automatically moves from the auxiliary seedling stand 39 to the seedling tank 19 by its own weight.
Therefore, according to the present embodiment, a special device for feeding seedlings from the auxiliary seedling stand 39 side to the seedling tank 19 side is unnecessary, the structure of the seedling supply device can be simplified, and the seedling supply device 66 can be provided. Since it can be miniaturized, the seedling planting machine 1 can be miniaturized.

Further, according to this embodiment, when the seedlings 80 on the seedling removing plate are exhausted, the seedling support member sliding mechanism 60 causes the seedling removing plate 8 to move.
Since 0 is slid while being held to a position where it does not interfere with the seedling lifting member 40, the seedling can be placed on the auxiliary seedling stand 39 while being firmly supported by the seedling lapping plate 80, and the seedling is supplied to the auxiliary seedling stand 39. Work can be performed efficiently.

Further, according to this embodiment, as shown in FIG. 2, the upper end of the seedling tank 19 is supported by the support frame 22, and the middle and lower ends of the seedling tank 19 are supported by the bifurcated arms 26. Since the support frame 22 and the bifurcated arms 26 support the load, the seedling tank 19 that is heavy by attaching the seedling supply device 66 is attached to the support frame 22 and the bifurcated arms 26. Can be reliably supported with sufficient rigidity.

In addition, in this embodiment, as shown in FIG. 2, the stopper 4 prevents the seedling lifting member 40 from rotating counterclockwise.
However, since the seedling lifting member 40 is configured to sufficiently allow the clockwise rotation of the seedling lifting member 40, the auxiliary seedling stand 39 is mounted on the auxiliary seedling stand 39 in the state shown in FIG. Even when the seedling lifting member 40 is moved to the upper center, the seedling lifting member 40 does not cause any inconvenience.

In addition, in this embodiment, since the stopper 65 is attached to the auxiliary seedling stand 39, the auxiliary seedling stand 39 can be reliably stopped at a predetermined position.

Although the auxiliary seedling 39 has a three-stage type, the auxiliary seedling 39 has a different number of stages, such as a two-stage type or a four-stage type, depending on the size of the seedling planting machine 1 and working conditions. May be used.

FIG. 7 shows another embodiment of the present invention. In this embodiment, instead of the seedling plate 80 of the previous embodiment,
The seedling box 90 is used as a seedling support member.
The seedling box 90 of the seedlings in the auxiliary seedling stand 39
It is supposed to be placed on 7. One end of the seedling box 90 is engaged with the seedling stopper 59 of the seedling shelf 57, and the step portion 91 on the lower surface of the other end is engaged with the hook portion 62a of the slide rod 62 of the seedling support member slide mechanism 60. , Slits 92 at both ends to avoid interfering with the seedling lifting member 40
Has been formed. Although the seedlings are prevented from sliding down on the vertical wall 93 of the seedling box 90, the seedling box 90 is prevented by the seedling stopper 59.
Since the sliding down is prevented, as a result, the seedling stopper 59 is prevented from sliding down.

According to the structure of the above embodiment, the auxiliary seedling stand 39
When is moved to a predetermined position, the seedling lifting member 40 passes through the slit 92 of the seedling box 90, lifts the seedling, and releases the stopper function of the seedling stopper 59. As a result, seedling 3
6 is automatically moved from the auxiliary seedling stand 39 to the seedling tank 19 by its own weight.

When the seedling box 90 runs out of seedlings, the seedling box 90 is moved to the seedling lifting member 40 by the seedling support member slide mechanism 60.
Slide it to a position where it does not interfere with. In addition, in the embodiment, since the slits 92 are formed in the seedling box 90, the seedling box 90 and the seedling lifting member 40 do not interfere even if the seedling box 90 is not slid. As in the example, the seedling box 90 as the seedling support member was slid.

[0036]

As is apparent from the above description, according to the present invention, the auxiliary seedling table is slantably attached to the upper part of the slanted seedling tank so that the seedlings can slide down from the seedling shelf of the auxiliary seedling table. A seedling stopper to prevent it is provided on the seedling rack, but when the auxiliary seedling stand moves to a predetermined position, the seedling lifting member lifts the seedling and releases the stopper function of the seedling stopper. The seedlings on the seedling stand are automatically moved to the seedling tank side by their own weight. Therefore, the present invention does not require a special device for feeding the seedlings of the auxiliary seedling stand to the seedling tank side, can simplify the structure of the seedling feeding device, downsize the seedling feeding device, and eventually the seedling planting machine. Can be miniaturized.

Further, according to the present invention, when the seedlings on the seedling support member are exhausted, a seedling support member slide mechanism for sliding the seedling support member while holding the seedling support member to a position where it does not interfere with the seedling lifting member is attached to the auxiliary seedling stand. Therefore, the seedlings can be placed on the auxiliary seedling stand together with the seedling support member. Therefore, according to the present invention, seedlings can be supplied to the auxiliary seedling stand while being firmly supported by the seedling support member, and the reinforcing work can be efficiently performed.

[Brief description of drawings]

FIG. 1 is a side view of a seedling planting machine showing an embodiment of the present invention.

FIG. 2 is an enlarged view of a main part of FIG.

FIG. 3 is a front view of a support frame (a view in the direction of arrow A in FIG. 2).

FIG. 4 is a plan view of a parallel link mechanism.

FIG. 5 is an enlarged view of an essential part showing a part of the seedling planting work machine.

FIG. 6 is a perspective view of a seedling taking plate.

FIG. 7 is an enlarged side view of essential parts of a seedling planting machine showing another embodiment of the present invention.

FIG. 8 is a perspective view of a seedling box.

[Explanation of symbols]

 1 seedling planting machine 19 seedling tank 39 auxiliary seedling stand 40 seedling lifting member 57 seedling shelf 59 seedling stopper 60 seedling support member slide mechanism 66 seedling supply device 80 seedling plate (seedling support member) 90 seedling box (seedling support member)

Claims (1)

[Claims] 1. An auxiliary seedling stand is movably attached to the upper part of the tilted seedling tank, a seedling stopper is formed on the seedling shelf of the auxiliary seedling stand to prevent the seedling from sliding down, and the seedling is placed on the seedling shelf. A seedling feeding device for a seedling planting machine that puts seedlings together with a support member, and lifts the seedlings when the auxiliary seedling stand moves to a predetermined position at the upper end of the seedling tank and releases the stopper function of the seedling stopper. While attaching the lifting member, the auxiliary seedling base is equipped with a seedling support member slide mechanism for retracting while holding the seedling support member to a position where it does not interfere with the seedling lifting member when the seedling support member runs out. Seedling feeding device for seedling planting machine.