JPH062495Y2 - Transplanter seedling tank lift control device - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION (Industrial field of application) The present invention relates to a seedling tank lifting control device for transplanters such as onions.

(Prior Art) There is a transplanter for onions or the like in which a large number of seedlings are laterally placed in a seedling tank and the seedlings in the seedling tank are adsorbed one by one by an adsorption device and taken out. .

In this type of transplanter, conventionally, the seedling tank was hung with a spring, etc., the weight of the seedling was balanced with the spring to keep the seedling level at a substantially constant level, and the adsorption of seedlings by the adsorption device was prevented. Was there.

(Problems to be solved by the device) However, in the conventional ones, the seedling level fluctuates greatly due to vibrations, etc., lacks reliability, and it is impossible to prevent the occurrence of adsorption mistakes. The device had the drawback of damaging the seedlings.

In view of such conventional problems, the present invention aims to improve the reliability by actively raising and lowering the seedling tank so as to detect the seedling level and keep it substantially constant.

(Means for Solving the Problems) As a means for achieving the above, the present invention provides a seedling 1 in a seedling tank 47.
In a transplanter configured to adsorb the seedlings to the planting device 7 side by adsorbing the seedlings, a tank elevating mechanism 49 for raising and lowering the seedling tank 47, and a detector 110 for detecting the seedling level of the seedling tank 47, The control unit 111 controls the tank elevating mechanism 49 so as to elevate the seedling tank 47 so that the seedling level is kept constant by the signal from the detector 110.

(Working) When the seedling level in the seedling tank 47 decreases, the detector 110 detects it and activates the tank lifting mechanism 49 to activate the seedling tank 47.
Raise. When the seedling level rises above the detector 110, the tank lifting mechanism 49 stops and the seedling tank 47 stops at that position. Therefore, if the adsorption device 3 takes out the seedlings 1 and the seedlings 1 in the seedling tank 47 are reduced, the seedling tanks are correspondingly reduced.
47 can be raised and the seedling level can be kept almost constant.

(Embodiment) Hereinafter, the present invention will be described in detail based on an illustrated embodiment. In the examples, a transplanting machine for transplanting the onion seedlings 1 is illustrated, but the present invention is not limited to this.

FIG. 10 shows a walk-type egg transplanter. This transplanter has a seedling take-out device 3, a seedling tank 4, a supply device 5, a transfer device 6 and a planting device 7 at the front of a machine body 18. Be prepared.

The machine body 18 is provided with an engine 19 and a rear handle rod 20 and the like, and a power transmission mechanism 2 is provided by the power from the engine 19.
1, the pair of left and right walking wheels 107 are driven via the mission device 105 and the transmission mechanism 106, and the seedling take-out device 3, the transport device 6, the planting device 7, etc. are driven via the transmission mechanism 108. The transmission mechanism 21 is provided with an electromagnetic clutch 109. When the electromagnetic clutch 109 is disengaged, all traveling and other planting operations are stopped.

As shown in FIGS. 1 to 3, the carrier device 6 is mounted on a base 8 protruding forward from the machine body 18 via a bracket 9, and the feeder 5 is mounted on the base 8 and the carrier device 6 above the carrier 8. Is supported via left and right columns 10 and 11, and the suction device 3 is attached to the base 8 and the supply device 5 between the tank device 4 and the transfer device 6 via the link mechanism 12, and the tank device 4 is supplied. The planting device 7 is attached to the left side of the device 5, and the planting device 7 is attached to the lower part of the conveying device 6 via left and right columns 13 and 14.

In the adsorption device 3, 15 is a suction cylinder whose axial direction is up and down, and its upper end is connected to a vacuum pump (not shown) via a hose 16 and a valve (not shown). Also, at the lower end of the suction cylinder 15,
A seedling suction body 17 is attached, and the seedling 2 stored in the tank device 4 is adsorbed to the tip of this seedling suction body 17.

The suction cylinder 15 has a large diameter at the upper end, and is movably inserted and held by a ring-shaped holder 22 attached to the front end of the link mechanism 12.

From the holding body 22, as shown in FIG. 3, the first link shaft 23
Is projected rearward, and the first link rod 24 is attached to the first link shaft 23.
The left end of is rotatably fitted on the outside. A bracket 25 is provided so as to project from the outer periphery of the first link shaft 23, and the left end of the second link rod 26 is bent into an L-shape on the bracket 25 so as to be rotatable around the front-rear axis.

A second link shaft 27 projects rearward from the rear end of the first link rod 24, and a link cylinder 28 is fitted onto the second link shaft 27 so as to be relatively rotatable. A bracket 29 is provided so as to project from the outer periphery of the link cylinder 28, and the right end of the second link rod 26 is bent into an L-shape on the bracket 29 and is rotatably attached to the front-rear center.

One end of a third link rod 30 is fixed to the rear end of the second link shaft 27. A third link shaft 31 is provided so as to project rearward from an intermediate portion of the third link rod 30. This 3rd link shaft 31
The fourth link rod 32 is externally fitted through the elongated hole 33 so as to be movable in the longitudinal direction of the elongated hole and relatively rotatable.

One end of the fourth link rod 32 is connected to one end of the fifth link rod 34 by a fourth
It is mounted rotatably around the front-rear axis via a link shaft 35.

The other end of the fifth link rod 34 is fixed to the drive shaft 36 at the front and rear axis. The drive shaft 36 is rotatably supported on the base 8 via a pair of front and rear brackets 37, 38, and its front end is linked to a drive source (not shown).

A bracket 39 is provided so as to project from the outer periphery of the link cylinder 28, and the lower end of the sixth link rod 40 is L-shaped.
It is bent into a letter shape and is rotatably attached around the front-rear axis.
The upper end of the sixth link rod 40 is rotatably attached to the rear surface of the supply device 5 via a fifth link shaft 41 about the front-rear axis. Further, the link cylinder 28 has a seventh link rod 42.
The bottom edge of is stuck. The upper end of the seventh link rod 42 is rotatably attached to the rear surface of the supply device 5 via the sixth link shaft 43 about the front-rear axis.

A seventh link shaft 44 is provided so as to project rearward from an intermediate portion of the seventh link rod 42. The seventh link shaft 44 is attached to the eighth link rod.
45 is externally fitted through the long hole 46 so as to be movable in the longitudinal direction of the long hole and relatively rotatable.

One end of the eighth link rod 45 is attached to one end of the fifth link rod 34 via the fourth link shaft 35 so as to be rotatable about the front-rear axis.

With the configuration of the link mechanism 12, when the drive shaft 36 is rotated in the direction of the arrow in the figure, the fifth link rod 34 rotates, the fourth link rod 32 moves left and right, and the third link rod 30 swings left and right. . By the horizontal swing of the third link rod 30, the second link shaft 27 swings and swings about the shaft center in the link cylinder 28, whereby the first link rod 24 swings up and down. Then, the seedling suction body 17 at the lower end of the adsorption device 3 vertically reciprocates between the tank device 4 and the transport device 6.

On the other hand, the rotation of the drive shaft 36 causes the eighth link rod 45 to move left and right via the fifth link rod 34, which causes the seventh link rod 45 to move.
42 moves left and right. Due to this, the first link rod 24 moves left and right via the link cylinder 28. Then, the seedling suction body 17 at the lower end of the adsorption device 3 reciprocates left and right between the tank device 4 and the transport device 6.

Further, the second link rod 26 and the sixth link rod 40 restrict the rotation of the holding body 22 around the first link shaft 23, and the postures of the suction cylinder 15 and the suction body 17 are maintained.

The tank device 4 mainly includes a seedling tank 47, a tank swinging mechanism 48, and a tank lifting mechanism 49.

The tank 47 is opened at the upper side, and a large number of seedlings 1 are stored with the longitudinal direction thereof as the front-back direction. As shown in FIGS. 4 to 6, the tank 47 is composed of a frame 50 having a quadrangular upper end, and mounting pieces 51, 52 extend downward from the left and right parts of the frame 50. Both ends of a rubber sheet 53 are attached to the and 52 by bolts and nuts 54.

Accordingly, since the rubber sheet 53 has flexibility, the left and right sides of the rubber sheet 53 hang down so that the seedlings 1 can be stored. Further, the rubber sheet 53 is provided with a long opening 55 in the left-right direction.

Further, the frame 50 has a smaller opening area toward the lower side, plates 56 and 57 are extended downward from the front and rear ends, and rolling wheels 58 are attached to the upper portions of the plates 56 and 57.

The tank swing mechanism 48 swings the tank 47 to the left and right, and has a pair of front and rear rails 59 and 60 having a U-shaped cross section, and the tank 47 rolls left and right on the rails 59 and 60 via the rolling wheels 58. It is supported freely. The left end of both rails 59, 60 is a connecting rod 6
1, and a bracket 62 projects leftward from the connecting rod 61. A motor 63 and a speed reducer 64 are attached to the bracket 62, a rotary plate 65 is attached to the rotary shaft of the speed reducer 64, and a crank rod 66 is attached to the rotary plate 65 and the tank 47.
Each end is pivotally attached. As a result, the tank 47 reciprocates left and right via the movement of the crank rod 66 by the rotational drive of the rotary plate 65.

The tank elevating mechanism 49 elevates and lowers the tank 47, and has a pair of front and rear masts 67, 68. The masts 67, 68 can be raised and lowered freely by the connecting rod 61 of the rails 59, 60 via the rolling wheels 69. It is supported.

The upper and lower ends of both masts 67 and 68 are connected by connecting members 70 and 71, respectively, and the brackets 7 are attached to the connecting members 70 and 71, respectively.
Sprockets 74 and 75 are rotatably attached via 2,73.

A chain 76 is wound around both sprockets 74 and 75, and the chain 76 is connected to the rail connecting rod 61.
Then, the sprocket 74 is rotated and driven by the motor 78 via the decelerator 77, so that the tank 47 is moved up and down. The upper connecting member 70 of the mast is connected to the left end of the supply device 5.

As shown in FIG. 9, the motor 78 detects the inner level in the tank 47 by the detector 110, and is controlled via the control unit 111 so that the seedling level becomes substantially constant. That is, the detector 110 is
It has a light emitter 81 and a light receiver 82, and the light emitter 81 is a tank body 47.
Located on the right side of the mast via bracket 83
The light receiver 82 is directly attached to the mast connecting member 71. The positions of the light emitter 81 and the light receiver 82 in the front-rear direction are positions where the optical signal passes through the opening 55 of the rubber sheet 53 of the tank 47, and the vertical position is the opening.
It is near the top of 55.

The control unit 111 controls the seedling 1 in the tank 47 from the light emitter 81 to the light receiver 8
In the state where the optical signal to 2 is cut off, the motor 78 of the tank lifting mechanism 49 is not operated, and the seedling 1 is taken out from the tank 47 by the suction device 3 and reduced from this state, and the seedling 1 at the top is reduced.
When the optical signal is received by the light receiver 83 when the level is decreased, the motor 78 of the tank lifting mechanism 49 is driven to raise the tank 47 until the seedling 1 blocks the optical signal.

As a result, the upper end level of the seedlings 1 stored in the tank 47 is always kept at a constant height, so that the seedling level can be always maintained at the integrated height with respect to the seedling suction body 17 of the adsorbing device 3. Can be done reliably.

A limit switch 84 is attached to the mast 67. The limit switch 84 is brought into contact with the rail connecting rod 61 and operated when the tank 47 moves up to the position where the stored seedlings 1 are lost by the control. By operating this limit switch 84, the tank lifting mechanism 49
The motor 78 is driven, and the tank 47 is lifted to just below the seedling feeding device 5 as shown by the phantom line in FIG. This is to replenish the tank 47 with the seedlings 1 from the seedling supply device 5 as described later. When the limit switch 84 operates, the electromagnetic clutch 109 is cut off to stop the planting operation, and the buzzer gives an alarm.

The feeding device 5 has a conveyor mechanism built in an upper opening housing 85 having an oval shape in a front view. The conveyor mechanism includes a drive shaft 86 on the left side, a driven shaft 87 on the right side, and a winding transmission body such as a chain. (Not shown). Further, a plurality of seedling cases 88 are arranged side by side in the housing 85 so as to circulate in the direction of the arrow in the figure by the conveyor mechanism.

A seedling discharge port 89 is provided above the tank 47. The seedlings 1 in the seedling case 88 are supplied to the tank 47 from the seedling discharge port 89. The drive shaft 86 is linked to a drive source (not shown). In addition, the tank controller
When 47 rises up to the phantom line in Fig. 1, it is supposed that one seedling case 88 will wrap around. Then, after the seedlings 1 in one seedling case 88 are discharged to the tank 47, the tank 47 is lowered by the elevating mechanism 49.

The transport device 6 transports the seedlings 1 transferred from the tank 47 by the adsorption device 3 and the link mechanism 12 to the planting device 7, and is mainly configured by a belt conveyor 90. The belt conveyor 90 is driven to rotate in the direction of the arrow in the figure, and by being formed in a wave shape, seedling placement grooves 91 are provided in parallel in the front-rear direction at equal intervals in the circumferential direction. The orbital speed of the belt conveyor 90 and the pitch of the seedling placement grooves 91 are determined by the link mechanism.
Corresponding to the operating speed of 12, the seedlings 1 that have been released from adsorption are placed in each mounting groove.
One at a time in 91. Then, the placed seedlings 1 are conveyed to the right and fall, and are supplied to the planting device 7 one by one. In order to drive the belt conveyor 90, as shown in FIG. 2, a sprocket 93 is provided on a portion of the conveyor drive shaft 92 projecting forward, and a chain 95 is wound around the sprocket 93 and the sprocket 94 provided on the drive shaft 36. Do by hanging.

The planting device 7 is for planting the seedlings 1 in soil, and includes a pair of left and right rubber planting wheels 98, 9 on a frame 96 via a pivot 97.
9 is installed. Further, a pair of left and right ground wheels 100, 101 are attached to the frame 96. A sprocket 102 is attached to the pivot 97, and is interlocked with a drive source (not shown) via a winding chain to rotate the planting wheels 98, 99.

Both planting wheels 98, 99 are expanded in the left-right direction as the upper half part goes upward, and the lower half part is arranged at an interval where the seedlings 1 can be sandwiched. In order to maintain this distance, roller 1 is attached to both wheels 98 and 99.
Group 03 is in contact.

Next, the operation of the transplanter 2 will be described.

With the transplanter 2 advanced, the seedling suction body 17 of the adsorption device 3
7 is inserted into the tank 47 by the link mechanism 12 as shown in FIG. 7, and the seedlings in the tank 47 are suction-held by the suction body 17.

The seedling suction body 17 is brought to the state of FIG. 1 through the state of FIG. 8 by the link mechanism 12, and the seedling suction body 17 is positioned above the carrier device 6. In this state, the communication between the vacuum pump and the suction cylinder 15 is closed by a valve, and the seedling 1 is conveyed by the belt conveyor 90 of the transfer device 6.
Drop it on.

The seedling 1 placed on the belt conveyor 90 is conveyed to the planting device 7, and then dropped between the planting wheels 98 and 99.
The planting wheels 98 and 99 are planted in the soil.

During the transportation and planting work of the seedlings 1, the adsorption device 3 repeats the above operation, and the seedlings 1 are planted one by one in the soil at a constant interval.

Then, when the seedling 1 in the tank 47 decreases and the seedling level decreases, the detector 110 detects it and rotates the motor 78, so that the tank 47 rises according to the decrease of the seedling 1 and the seedling level is substantially reduced. Keep constant. Therefore, the adsorption error of the seedling 1 by the adsorption device does not occur.

Further, since the tank 47 reciprocates left and right, the left and right positions of the tank 47 with respect to the seedling suction body 17 are random, and the seedlings 1 in the tank 47 can be taken out evenly from above.

FIG. 11 and FIG. 12 show the second embodiment, and the tank swing mechanism.
The motor 47 of 48 is used to raise and lower the tank 47. That is, the bevel gear 114 is fitted onto the spline portion 113 of the rotating shaft 112 that is interlocked with the motor 63, and this bevel gear 114 is attached to the bevel gear 114 by the shift fork 115.
It is operable to engage with 116 and is attached by a spring 117 in a direction away from the bevel gear 116. The bevel gear 116 is provided at the upper end of a vertical screw shaft 119 rotatably held by a bearing 118 on the rail connecting member 61 side. The screw shaft 119 is screwed into a screw cylinder 120 connected to the fixed side.

Therefore, if the bevel gears 114 and 116 are engaged, the motor 6
The screw shaft 119 and the screw cylinder 120 can be expanded and contracted by forward or reverse rotation of 3 to drive the tank 47 up and down, and the tank rocking mechanism 48 can be used to configure the tank lifting mechanism 49 without using the motor 78 or the like. Is also good.

The shift fork 115 is pivotally attached to the bracket 122 by a pin 121 and connected to the solenoid 123. The solenoid 123 is driven by the control unit 111. 124 is tank 4
7 is a limit switch for detecting the lower limit.

(Effect of the Invention) According to the present invention, a tank lifting mechanism 49 for moving the seedling tank 47 up and down, and a detector for detecting the seedling level of the seedling tank 47.
110 and a control unit 111 that controls the tank elevating mechanism 49 to elevate and lower the seedling tank 47 so that the seedling level is kept constant by the signal from the detector 110. The reliability in controlling the seedlings to be substantially constant is improved, and it is possible to prevent the seedlings from adsorbing mistakes and damages.

[Brief description of drawings]

The drawing shows an embodiment of the present invention, and FIG. 1 is a rear view of the main part,
2 is a side view of the same, FIG. 3 is a plan view of a link mechanism, and FIG.
Figure is a plan view of a seedling tank, Figure 5 is a front view of the same, Figure 6 is a sectional view, Figures 7 and 8 are operation explanatory views, Figure 9 is a configuration diagram of the control system, and Figure 10 is the whole. Is a schematic plan view, FIG. 11 is a rear view of the tank elevating part, and FIG. 12 is a side view of the same. 1 ... Seedling, 3 ... Adsorption device, 7 ... Planting device, 47 ... Seedling tank,
49 ... Tank lifting mechanism, 110 ... Detector, 111 ... Control section.

Claims (1)

[Scope of utility model registration request] 1. A transplanter in which a seedling (1) in a seedling tank (47) is adsorbed by an adsorbing device (3) and taken out to the planting device (7) side, and the seedling tank (47) is moved up and down. Tank raising and lowering mechanism (49) for detecting the seedling level of the seedling tank (47) (1
10) and a control unit (111) for controlling the tank lifting mechanism (49) so as to raise and lower the seedling tank (47) so that the seedling level becomes constant by the signal from the detector (110). A seedling tank lifting control device for transplanters.