JPH03160912A - Seedling carrying system in transplanter - Google Patents

Abstract

PURPOSE:To provide the title system so designed that in a transplanter with such a scheme as to hold bank-like seedlings with a pair of carriers and feed them to planting means, the holding spacing at the carriage-starting end of the carriers is ensured to be extensible, thereby enabling the seedlings to be fed to the title system with their attitude in order and protecting seedling buds from damage. CONSTITUTION:In a transplanter 1 having such a scheme as to hold band-like seedlings with a pair of carriers (a stationery conveyor belt 21 and a mobile conveyor belt 26) and feed them the planting means 3, the carriage-starting end of the carriers 21, 26 is designed to movably support so that the holding spacing is ensured to be extensible. In feeding the band-like seedlings to the title system, when the starting end of at least one carrier is moved outside, the holding spacing will be extended, thereby enabling the seedlings to be quickly inserted extremely easily into said spacing extended without disturbing seedling attitude and preventing defective stock production through bringing the starting end of the seedlings fed into contact with the terminal end of the preceding bank-like seedlings.

Description

DETAILED DESCRIPTION OF THE INVENTION (a) Field of Industrial Application The present invention relates to a seedling conveying device in a transplanter for planting seedlings in a field.

(B) Prior Art Conventionally, a pair of left and right carriers is provided on a seedling supply stand, and these carriers transport the seedlings in the form of a belt to the planting section, where they are planted one by one in the field. Transplant machines that do this are already known.

(C) Problems to be Solved by the Invention Since the conveying body in the known transplanting machine conveys the seedlings with the pair of conveying bodies supported at predetermined positions, it is difficult to feed seedlings in the form of strips to the conveying device. was difficult.

(2) Means for Solving the Problems The present invention provides a transplanter in which strip-shaped seedlings are pinched and conveyed by a pair of carriers and supplied to a planting body, and a pinching gap is provided at the conveyance starting end side of the carriers. When supplying seedlings by supporting them movably so as to expand and contract, it is possible to open a nipping gap on the starting end side of the pair of carriers, transport the seedlings on the terminal end side, and then supply the seedlings into the gap. In this way, the above-mentioned problems were solved.

(E) Prepare a strip-shaped seedling, move the starting end of the conveyor outward to widen the clamping gap, insert the strip-shaped seedling into this widened clamping gap, and it will be fed first and transported. After connecting to the terminal end of the seedling, the starting end side of the expanded carrier is operated so that the clamping gap becomes narrower. During such seedling supply, the terminal end side of the transport body continues to transport the seedlings, so that large plants are not produced due to seedling supply, and the start end side of the transport body pinches and transports the inserted seedlings.

(F) Example An embodiment of the present invention is shown in the drawings. The rice transplanter 1 has a float 2 at the bottom and a planting body 3 at the rear, similar to a riding rice transplanter. The mounted transmission cases 4.4 are connected in parallel, and the joint stay 6, which is erected on the main transmission case 5 at the center of the width of the machine, is connected to the top link 7 and lower link 8.8 to the body 10 of the riding rice transplanter. The frame 12 of the seedling feeding device I1 is connected to the rear stays 4a. 4a and a front stay 13 fixed to the joint stay 6, and a work seat 14 is mounted on the top link 7.

The seedling supply device 11 is composed of a transport section l5, a supply section 16 connected to the terminal end thereof, and a cutting section l7. Front and rear booleys 20.2 supported on 12a
It is supported by a stationary conveyor belt 2l stretched at zero, a movable pulley 23 at the front supported by a swing arm 22, and a rotating shaft 24 supported by the rear of the frame 12, and rotates at a fixed position. Movable conveyor belt 2 stretched over booley 25
6, and on the back surface of the movable conveyance belt 26 on the conveyance side, rollers 28 supported by a plurality of swinging arms 27 spaced longitudinally are pressed by coil springs 29. Therefore, the movable conveyor belt 26
The conveying action side of is in pressure contact with the conveying surface of the stationary conveying belt 2l, and the stationary conveying belt 2l and the movable conveying belt 26
A V-belt-shaped protrusion 19 is provided on the inner circumferential surface of each pulley and the roller, which fits into a V-groove in the middle of the width of each pulley and roller. Arms 22a each protrude from the base of the movable arm 22.
The operating rod 3l, which is supported by a support 30.30 integral with the support frame 12a so as to be slidable back and forth, is loosely fitted into the hole bored at the side end of each swing arm 27... Seats 32 fixed to the operating rod 3l are brought into contact with portions corresponding to the front side of the ends of the handles 22, respectively. In the embodiment described above, the starting end side of one side of the conveyor belt (movable conveyor belt 26) is configured to be operable to move forward and backward, but the stationary conveyor belt 21 may also be a movable conveyor belt. In addition, the swing arm 22.27・
・By increasing the length on the starting end (front side) and gradually shortening the length on the terminal end, the starting end will be larger and the expanded seedling replenishment operation will be easier when the clamping gap is widened.

In addition, on the back surface of the stationary conveyance belt 21 on the conveyance side, guide rollers 33 . A guide roller 34 is also provided on the inside of the non-conveying side between the rear part of the stationary conveyor belt 21 and the intermediate part of the stationary conveyor belt 21.
．． 34, and four pairs of conveyor belts 21 and 26 configured in this way are arranged in parallel, and the interval between their rear parts is equal to the spacing between the planting rows, or pairs of conveyor belts 21 and 26 are arranged on the left and right sides. Equal parts, with the center slightly wider than the other parts, and the front part,
In order for the worker seated on the work seat 14 on the top link 7 in the center of the width of the machine to easily supply seedlings, two rows are offset to the left and right to form an eight-shaped structure with the front part widened in plan view. It is designed to be done.

The supply section 16 is connected to the shafts 20a, 2 of the rear booley 20.25.
At the top of 4 there are drive booleys 35 and 36 as shown in Figure 3.
A stay 3 is fixed to the frame 12 and protrudes rearward from the frame 12.
A rotary body 40 with a flexible lug and a passive pulley 41 are attached to a rotating shaft 39 supported by a bracket 38 and a passive pulley 41 on the side and a stationary conveyor belt 21.
A flat belt 42 is stretched over the drive pulley 36 on the side, and a belt 43 with flexible lugs is stretched between the passive booley 4l on the other side and the drive pulley 35 on the movable conveyance belt 26 side. be.

As shown in FIGS. 4 and 5, the cutting section 17 is composed of a shutter 45 and a cutter 46, which are disposed slightly in front of and directly below the center position of the pair of left and right rotating shafts 39, 39. The shutter 45 is screwed onto the upper portions of a pair of left and right shutter arms 47, 47, and the shutter arms 4
The base of 7.47 is placed at the rear, and single-digit shafts 48 and 48 are interlocked by gears 49 and 49 so that they rotate in opposite directions.

The cutter arm 50 to which the cutter 46 is screwed is connected to the support shaft 5
1 and supported by the bracket.

Furthermore, a bevel gear case 52 is provided between the two sets of supply sections 16 and 16, and a cutter cam 55 is mounted at the front of a cam shaft 53 supported by the bevel gear case 52, and a shutter cam 56 is mounted at the rear. Installation, fulcrum shafts 57 on both sides of the upper part of the camshaft 53
．． 57, and the lower cam 58 of the arm fixed to the front part of the fulcrum shaft 57 is brought into contact with the cutter cam 55, and the upper part of the cutter link 59 fixed to the rear part of the fulcrum shaft 57 is connected by the rod 60 to A cam flange lower 62 attached to a shutter link 6l, which is interlockingly connected to the upper part of the arm 50 and is rotatably supported and suspended from the rear of a fulcrum shaft 57, is brought into contact with the shutter cam 56, and the shutter link 6l is attached to the rod 63. One shirtter arm 4
7 and corresponding cutter links 59.
59 and shutter links 61, 61 are connected by tension springs 64, 65, respectively, so that each cam follower 58, 62, . . . is pressed against the cutter cam 55 or shutter cam 56.

Although this embodiment is a four-row planting type, it is sufficient to provide two pairs of cutter cams 55 and shutter cams 56, and the timing of their operation is such that the left and right cutting parts l7 operated by the pair of cams are Since the phases are 180 degrees apart, by shifting the phases of the other sets of cams by 90 degrees, the operating angle of the first one from the left will be 0 degrees, the second one will be 180 degrees, and the second one will be 180 degrees, 3
The second angle is 270 degrees, and the fourth angle is 90 degrees, making it possible to average the load.

Next, a cassette 66 that stores the stems of the strawberry seedlings that have been made into strips.
To explain with reference to FIGS. 6 and 7, the cassette 6
Reference numeral 6 has a receiver 67 fixed to one end that is L-shaped in plan view, and a long and short protrusion 6 that fits into the hole 67a of the receiver 67 on the outer surface of the other end.
8a. It is composed of a pair of plates 69 and 70 that have the same shape as the plate 68b.
A sponge 7l is pasted on the inner surface of 0.

When the stems of rush grass seedlings are housed in the cassette 66, for example, the rush grass seedlings are arranged in a band shape on one plate 69, and the other plate 70 is superimposed with the other plate 70 slightly shifted back and forth.
Moving in the length direction, the projecting piece 68a. 68b to the other receiver 6
When inserted into the hole 67a of No. 7, the state shown in FIG. 7 fa) is obtained.

The cassette receivers 72 are disposed on both sides of the transport path, and their rear ends are formed into upright lateral stoppers 73.

The driving part of the planting body 3 has a base supported by a swinging arm like a crank-type one in a rice transplanter, a crank bin 74 is inserted into the middle part, a cam 75 is attached, and the drive part is pivotally supported by a bin 76a. The balance arm 76, whose base abuts the force arm 75, has its tip in contact with the upper end of the rod 77. A protrusion 80.80, which is rotatably supported by a shaft and which protrudes from the boss of each clamping arm 78 so as to expand in plan view, is connected to the tip of the rod 77 by a link 81.81. 77 is pressed against the tip of the balance arm 76 by a spring 82.

FIG. 10 shows another embodiment of the planting body 3,
The base of each clamping arm 78 is individually pivoted by a fulcrum pin 79, and protrusions 80, 80 protruding from their bosses are connected to the tip of the rod 77 via a link 81, 81. The base of the clamping arm 78 can be made strong.

As shown in FIG. 8, the transmission device drives a sprocket 85 on a horizontal shaft 84 which is transmitted to the bevel gear cases 52 and 52 via a chain 83 by a sprocket 5a of the main transmission case 5, and one bevel gear case. 52 drives an input shaft 87 of a conveyance transmission case 86 via a chain 88.

10 And the output subrocket 8 of the conveyance transmission case 86
Reference numeral 9 denotes a rotating shaft 24 of a stationary booley 25 around which a movable conveyor belt 26 supported at the rear of the frame 12 is wound.
, and the driven sprocket 91 of the shaft 20a to which the pulleys 9-20 of the stationary conveyor belt 21 are attached, through a transmission chain 92 wound in a zigzag pattern, so that the pair rotates in the opposite direction. do.

In the above-mentioned rush grass transplanting machine, a large number of cassettes 66 containing rush grass seedlings 100 are loaded into a spare seedling stand (not shown) provided near the driver's seat 93 with the long protrusion 68a positioned at the rear. When the machine 10 uses the automatic travel control system, the driver is seated facing backwards in the work seat l4, and when the driver is driving, another worker is seated in the work seat l4 as shown in FIG. When pushed backward, arm 22
a... and the swinging arms 22, 27... integral therewith swing counterclockwise in FIG. By turning to the left 11, the portion of the movable conveyor belt 26 except for the rear portion is separated from the stationary conveyor belt 2l.The operator inserts the cassette 66 into the separated portion and releases the operating rod 3l to release the coil spring. 29..., the movable conveyor belt returns to its original position and clamps the stem portion of the seedling 100 below the cassette 66.

Once the seedlings have been inserted into all of the transport sections, the machine is run and the planting clutch is engaged, which drives each part of the rush grass transplanter l, and the seedlings 100 are transferred along with the cassette 66 to the stationary transport belt 2l and the movable transport belt 26. It is conveyed in a pinched manner,
When the tip of the cassette 66 reaches the stopper 73, the long projection 68a is received, and the plate 69 that is integrated with it stops, while the other plate 70 is transported. ) comes out of the hole 67a. As a result, the front part of the cassette 66 is separated to both sides, so that the rear protrusion 68a also comes out of the hole 76a, and the plates 69 and 70 fall onto the cassette holder 72.

12 When the seedlings 100 reach the end of transport, they are transferred to the flat belts 42 and 43 of the supply section 16, and at the end of the transport, they are about to be sent out by the rotary body 4.0.40 with lugs.

At that time, the cutter cam 55 and the shutter cam 56 cause the cutter link 5 to resist the tension springs 64 and 65.
9 and the shutter link 6l are tilted, the left and right shutters 45, 45 clamp the roots of the seedlings 100, and the cutter 46 cuts them in this state. At that time, shutter 4
It is even better if the clamping surfaces of 5 are formed with sawtooth or other irregularities so that they interlock with each other, and the seedlings that have been cut into one plant are clamped by the planting body 3 and planted in the field.

As planting progresses, the end of the cassette 66 reaches the operating rod 3l.
When the movable conveyor belt 26 moves to the rear end (third from the front) roller 28 of the rollers interlocked with the movable conveyor belt 26, the operating rod 31 is pushed to separate the front part of the movable conveyor belt 26 from the stationary conveyor belt 2l.
Hold the cassette 66 with the other hand and supply the spare seedlings 100 in the same manner as described above.

l 3 (G) Effects of the Invention The present invention provides a transplanting machine in which a pair of carrier bodies pinch and convey belt-shaped seedlings and supply them to the planting body 3 as described above, in which the conveyance starting end side of the conveyance bodies is Since the clamping gap is movably supported so as to expand and contract, when feeding the seedlings 100 in the form of a belt to the conveyance device, when the starting end of at least one of the conveyance belts is moved outward, the clamping gap will expand. ,
Place the strip-shaped seedlings into the widened gap without disturbing the seedling posture.
and can be inserted very easily and quickly,
By bringing the starting end of the supplied seedling into contact with the terminal end of the belt-shaped seedling at the front in the conveyance direction, it is possible to prevent the plant from missing.

Moreover, since it is possible to supply the seedlings to the conveying device in an orderly posture, the stems of the seedlings will not intersect with each other, and the seedlings themselves and their buds will not be damaged when they are planted using the planting body after being conveyed. can be prevented.

[Brief explanation of the drawing]

The drawings show one embodiment of the present invention, and FIG. 1 is a plan view of a straw grass transplanter for multiple row planting
The figure is a plan view of one strip of the same as above, FIG. 3 is a longitudinal sectional side view of the same as above, FIG. 4 is a plan view of the cutting device, FIG. 5 is a back view of the same as above, FIG. Fig. 7 fa) is a longitudinal sectional plan view with the middle part of the cassette omitted, Fig. 7 (b) is a side view of the same, Fig. fc) is a rear view of the same, Fig. 8 is a plan view of the transmission device, Fig. 9 fa) is a plan view of the planted body, fb of the same figure
l is a longitudinal cross-sectional view of the same as above, Figure 10fa) is a plan view showing another embodiment of the planting body, Figure fb) is a longitudinal cross-sectional view of the same as above, t3
(cl is a perspective view of the connecting plate, the same figure (dl is A-A in (b)
11 is a plan view showing the working state, and FIG. 12 is a side view of the same. l...Rain grass transplanter, 3...planting body, l1 seedling feeding device, 1
2... Frame body, 14... Work seat, 2l... Stationary conveyor belt, 23 Movable booley, 26... Movable conveyor belt, 28
...Roller, 29..Coil spring, 31..Operation rod, 40..Rotating body, 42..Flat belt, 43..
・Belt, 45...Shutter, 46...Cutter, 5
5...force 15 shutter cam, 5 6...shutter cam, 6 6, cassette i..., 68a. 68b ・Protruding piece, 7 3 ・・Stopper l 6

Claims (1)

[Claims] A transplanter in which strip-shaped seedlings are pinched and conveyed by a pair of carrier bodies and supplied to the planting body 3, characterized in that the conveyance start end side of the carrier bodies is movably supported so that the pinching gap expands and contracts. A seedling transport device in a transplanter.