JP3054679B2 - Transplanter seedling supply device - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a transverse feed mechanism for reciprocally moving a seedling stand frame of a seedling stand on which seedling trays are placed, and
The present invention relates to a seedling supply device for a transplanting machine, comprising: a vertical feed mechanism for vertically feeding the seedling tray at the end position of the seedling frame in the reciprocating left and right directions.

[0002]

2. Description of the Related Art Conventionally, in a transplanting machine in which pot seedlings are taken out one by one from a seedling tray having a plurality of pot seedling accommodating portions and planted in a field, the seedlings on a seedling mounting table on which the seedling tray is placed are placed. A horizontal feed mechanism for reciprocating the platform frame from side to side, and a vertical feed mechanism for vertically feeding the seedling tray at the end position of the left and right reciprocal movement. A vertical feed drive shaft that is constantly driven in conjunction with the drive unit, a drive unit having a follower cam that operates in conjunction with the vertical feed operation member of the drive shaft, and a vertical feed drive unit that rotates in conjunction with this drive unit The drive unit is mounted on one side in the left-right direction of the seedling stand frame, and the vertical feed drive unit is mounted on the output shaft of the drive unit. The drive unit drives the seedling tray at a predetermined pitch. It can be fed vertically.

[0003]

However, in the conventional vertical feed mechanism constructed as described above, all the components are attached to the seedling frame and assembled, respectively. Is poor, the number of assembling steps is complicated, and the assembling accuracy is difficult to be obtained.Moreover, in the case where a plurality of interlocking parts are provided between the input side and the output shaft side operated by operating the vertical feed operation member, particularly, When this interlocking unit uses gears, if the assembling accuracy is poor, the vertical feed timing for the seedling tray will be out of order, and the problem that the vertical feed amount will be out of order will occur.Furthermore, the maintenance of the vertical feed mechanism may be performed. In addition, since it is necessary to perform the operation in a state of being attached to the seedling stand frame, there is a problem that it is difficult to perform the maintenance.

An object of the present invention is to provide a seedling frame for a vertical feed mechanism.
In addition to being able to easily assemble to the system, the accuracy of assembling the drive unit can be improved, the vertical feed timing and the vertical feed amount can be set properly, and troubles due to dust entering the drive unit can be prevented. Is to do.

[0005]

According to the present invention, there is provided a transverse feed mechanism X for reciprocally moving a seedling stand frame 14 of a seedling placing stand 14a on which a seedling tray 15 is placed to achieve the above object.
A vertical feed mechanism Y for vertically feeding a seedling tray 15 placed on the seedling mounting table 14a at a terminal position of the right and left reciprocating movement of the seedling frame 14; The mechanism Y includes a vertical feed drive shaft 37 having a vertical feed operation member 54, a drive unit 56 having a follower cam 69 which operates in conjunction with the vertical feed operation member 54, and a drive unit 5.
6 and a vertical feed drive body 79 which rotates in conjunction with the drive train 6, and a vertical feed drive case 55 having an attachment portion 55a for the seedling stand frame 14 is provided. A vertical feed drive unit 48 was formed inside, and this drive unit 48 was attached to the seedling stand frame 14.

[0006]

The drive unit 56 constituting the main part of the vertical feed mechanism Y is housed in the vertical feed drive case 55 and the vertical feed drive unit 4
The drive unit 56 is attached to the seedling stand frame 14 so that the assemblability can be improved.
Moreover, since the drive section 56 is assembled to the drive case 55 before the drive section 56 is attached to the seedling frame 14, the assembly error of the drive section 56 can be reduced, and the assembly accuracy can be improved. The vertical feeding timing and the vertical feeding amount of the seedling tray can be properly adjusted.
It is possible to prevent dust and the like from entering the unit 48, and when performing maintenance, the unit 48 is attached to the seedling stand frame 14.
Maintenance can be easily performed because it can be removed from the device.

[0007]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS As shown in FIGS. 9 to 11, the basic structure of a transplanter according to the present invention is that a transmission case 3 is provided at the rear of a front frame 1 on which an engine 2 is mounted at a front portion. The left and right driving wheels 4 are vertically movably supported by the left and right gears 3 via a left and right transmission case 5, and the front wheels 6 are vertically movably supported by an axle frame 7 on the front end side of the front frame 1. A chassis frame 9 is provided behind the transmission case 3 and connected to the front frame 1, and the chassis frame 9 is provided with a seedling supply device 8 described below. A seedling planting device 10 is provided at the rear of the transmission case 3 via a planting transmission case 11.

[0008] The seedling planting device 10 picks up one seedling pot from a seedling tray 15 placed on a seedling table of a seedling supply device 8 to be described later. The potted seedlings 16 are received, and are constituted by hopper-type planting claws 18 which move up and down in conjunction with the multi-cutter 17, and the planting claws 18 are used to plant the pot seedlings on the ridge surface A at regular intervals. Like that.

9 to 11, reference numeral 12 denotes a pressure-reducing roller for pressing down the ridge surface A, and reference numeral 13 denotes a seedling-planting device 10.
, A gauge wheel for swinging up and down, 19 is a steering handle, 21 is a planting clutch lever, 22 is a main speed lever,
Reference numeral 23 denotes an inter-unit shift lever, reference numeral 24 denotes a planting depth adjusting lever,
Reference numeral 5 denotes left and right side clutch levers.

The chassis frame 9 is made of a round pipe, has a recess 9a bulging downward at an intermediate portion thereof, and has a front end above the transmission case 3 and a cylinder for supporting a lifting cylinder 26. The steering handle 19 is fixed to the rear end of the vehicle via a frame 27. That is, a reinforcing plate 2 is provided above and below the cylinder frame 27.
8 and 29, the front end of the chassis frame 9 is fixed to the cylinder frame 27 via a lateral frame 30 and a left and right connecting plate 31, and the front frame is secured via the cylinder frame 27. It is connected to frame 1.

FIG. 11 is a plan view of an intermediate portion of the chassis frame 9 corresponding to the concave portion 9a.
As shown in FIG. 9 and FIG.
The left and right side frames 32a, 32b are fixed and
The seedling supply device 8 is provided in a portion surrounded by the concave portion 9a of the chassis frame 9 and the side frames 32a and 32b.
Is arranged.

Next, the seedling supply device 8 will be described.

The seedling supply device 8 comprises a lateral feed mechanism X for reciprocating a seedling stand frame 14 having a seedling stand 14a on which the seedling tray 15 is placed, and a seedling stand frame 14.
And a vertical feed mechanism Y for vertically feeding the seedling tray 15 mounted on the seedling mounting table 14a at one end at the left and right movement end positions. The horizontal feed mechanism X includes a planting clutch (not shown). It is operatively connected via a transmission chain 33 to a counter shaft 112 which is operatively connected via a transmission chain 111 to the output side of the planted clutch case 10 which is mounted, and is driven by the transmission chain 33 as shown in FIG. A lateral feed drive case 35 having a lateral feed drive shaft 34 is provided. The drive case 35 is fixed to the right side frame 32b, and the drive case 35 has a traverse groove 40a. Supporting one end side in the axial direction, the lateral feed shaft 40 is provided with a pair of intermittent gears 41 and 42 and a pair of lateral feed switching gears 46 and 47 provided on the lateral feed stop cams 43 and 44 and the counter shaft 45. And in conjunction with the horizontal feed drive shaft 34, the seedling stand frame via the horizontal feed shaft 40 - arm 14
Is reciprocated right and left.

As shown in FIG. 4, the traverse drive shaft 35 has a reduction gear 3 attached thereto.
One end in the axial direction of the vertical feed drive shaft 37 that is interlocked and connected via the pins 8 and 39 is supported. The other ends of the vertical feed drive shaft 37 and the horizontal feed shaft 40 in the axial direction are left side frames.
Supported by a bearing case 36 fixed to the drum 32a.

The seedling stand frame 14 is provided with a seedling mount 14a at the upper end of the starting end, and with the left and right side plates 14b at the lower end of the seedling stand. A tray collection guide 14c for guiding upward is provided, and a vertical feed mechanism Y described later is provided outside the left side plate 14b.
As shown in FIG. 5, a guide roller 49 is provided at a lower front portion of the seedling frame 14, and a resin sliding body (not shown) is provided at a lower rear portion. The guide roller 49 and the slide guide 50 are connected to the side frame.
Guide rails 51 and 52 laid between the arms 32a and 32b.
, And the entire seedling frame 14 reciprocates left and right by driving the lateral feed shaft 40.

Next, the vertical feed mechanism Y will be described.

The vertical feed mechanism Y comprises a vertical feed drive shaft 37 and a vertical feed drive unit 48 which are constantly driven during the planting operation.
And a longitudinal feed driver 79 mainly composed of sprockets, a longitudinal feed follower 80, and a transport band 81. The longitudinal feed drive shaft 37 has a bracket 53 fixed to the drive shaft 37, an elongated hole 53a. And a pair of longitudinal feed operation members 54 mainly composed of rollers for adjusting the distance from the drive shaft 37 via the fastening port 53b so as to be adjustable. The drive unit 48 is configured as follows. ing.

That is, the drive unit 48 is provided with a vertical feed drive case 55 having a mounting portion 55a for attaching to the seedling stand frame 14, and the drive case 55 is interlocked with the vertical feed operation member 54. The drive unit 48 having a follower cam 69 that operates is housed therein. The drive unit 48 is connected to the seedling stand frame 1 via the mounting portion 55a.
4 so as to be detachably attached.

More specifically, the drive case 55 is shown in FIG.
As shown in FIG. 7, the casing is composed of split cases 55b and 55c made of aluminum or an aluminum alloy which can be split into two parts, and is hermetically connected by a plurality of fixing screws 60. Is disposed, and one end of the driven shaft 60 in the axial direction projects outside from the drive case 55,
The driven shaft 60 is rotatably supported by a bearing of a bearing plate 61 provided outside the split case 55c and a bearing of the split case 55b. The protruding shaft portion of the driven shaft 60 is interlocked with the longitudinal feed operation member 54. Then, a driven cam 62 for longitudinal feed that is driven to rotate the driven shaft 60 and a driven cam 63 for unlocking having a cylindrical shaft 63a that is freely rotatably fitted to the driven shaft 60 are provided.

The driven cams 62 and 63 are mounted externally to the drive case 55. The drive case 55 includes a drive unit 56 that operates in conjunction with the driven cams 62 and 63. The driving unit 56 is configured as follows.

That is, a longitudinal feed arm 64 having a roller 64a at its tip is connected to the inner shaft of the driven shaft 60, and the inner shaft of the cylindrical shaft 63a is
A lock arm 65 having a roller 65a at its tip is spline-coupled. A follower cam shaft 66 is rotatably supported at an intermediate portion of the drive case 55, and a one-way clutch 6 is mounted at an intermediate portion of the follower cam shaft 66.
7, a follower cam 69 having an engagement hole 69a with which the roller 64a provided on the vertical feed arm 64 is engaged is fixed to the cylinder shaft 68, and the follower cam shaft Transmission gears 70 and 71 having different numbers of teeth are fixedly mounted on the follower cam shaft 66 located on both axial sides of the transmission gear 66, that is, on both outer sides of the cylindrical shaft 68, and the lock is secured to a boss 70 a of one transmission gear 70. A gear-shaped lock body 72 having a plurality of lock grooves 72a with which a roller 65a provided on the arm 65 is engaged is fixedly provided.

On the other side in the longitudinal direction of the drive case 55, there are provided inner gears 73a and 74a,
A cylindrical output shaft 75, which rotatably supports the speed increasing gears 73, 74 always meshing with 0, 71, is rotatably supported via bearings. A switching gear 77 having outer gears 77a and 77b selectively meshing with the inner gears 73a and 74a of the speed gears 73 and 74 by operating the shifter 76 is spline-fitted and supported so as to be slidable in the axial direction. You do it.

The driving unit 5 constructed as described above
6 is a vertical feed drive unit 4 which is entirely housed in the drive case 55 except for the driven cams 62 and 63.
8 is formed, and by attaching the drive case 55 to the seedling stand frame 14, the drive unit 5 is formed.
6 and thus the vertical feed mechanism Y can be easily assembled.

The seedling stand frame 1 of the drive case 55
4 and the mounting portion 55 as shown in FIGS.
a is attached to the attachment plate 14a and the left side plate 14b of the seedling stand frame 14 via attachment bolts 78.

On the other hand, as shown in FIG. 6, the vertical feed driving body 79 is connected to the output shaft 75, and the other end in the axial direction of the vertical feed shaft 82 is supported by the seedling stand frame 14. One end side in the direction is loosely inserted, and is connected to the output shaft 75 in an interlocked manner.

In the embodiment shown in the drawings, one end of the output shaft 75 in the axial direction is connected to the drive case 5 as shown in FIG.
5 and the vertical feed shaft 82 also penetrates the output shaft 75 and protrudes outward from the drive case 55.
4, the output shaft 75 and the vertical feed shaft 82 are interlockingly connected by connecting these interlocking pieces 83, 84 with fixing bolts 85. In the embodiment shown in the drawings, one of the interlocking pieces 83 and 84 is connected to a protruding shaft portion of the output shaft 75 by a fixing bolt 86 so as to be integrally connected to the interlocking piece 84 as shown in FIGS. An arcuate elongated hole 84a is provided, and the other interlocking piece 83 is provided with a pair of mounting holes 83a and a nut 83b fixed to the back surface, and a circumferential relative position between the interlocking pieces 83, 84, in other words, the output shaft 75 is provided. Adjusting mechanism 87 for adjusting the circumferential relative position of the vertical feed driving body 79 with respect to
Is composed.

In the above construction, the bearing plate 61 has a stopper 88 for regulating the swing of the vertical feed driven cam 62 via the arm 61a as shown in FIG.
The vertical feed driven cam 62 has a
7, an arm 62a having a stopper rubber 89 which comes into contact with the stopper 88 is attached, and the stopper rubber (not shown) provided between the arm 62a and a spring receiver (not shown) provided on the drive case 55. 89 to stopper 8
8, a return spring 90 is provided.

The cylinder shaft 63a of the unlocking driven cam 63 is provided with a spring receiver 91 extending to the opposite side of the driven cam 63 as shown in FIGS. 2, 3 and 8.
A roller 65a of the lock arm 65 is provided between the spring support 91 and a spring support rod 92 provided on the drive case 55.
9 for urging the lock member 72 into the lock groove 72a of the lock body 72.
3 are provided.

In the vertical feeding mechanism Y constructed as described above, the seedling stand frame 14 is reciprocated right and left by the horizontal feeding mechanism X, and is constantly driven when reaching the left and right reciprocating end position. Vertical feed operation member 54 of vertical feed drive shaft 37
The driven cams 62 and 63 swing counterclockwise in FIGS. 2 and 3 in conjunction with the rotation of the driven shaft 60 and the cylindrical shaft 6.
3a is driven to rotate, and the vertical feed arm 64 and the lock arm 65 swing counterclockwise in FIGS. 2 and 3 against the return spring 90 and the spring 93.

Then, by the swing of the lock arm 65,
The roller 65a is disengaged from the lock groove 72a and the lock of the follower cam shaft 66 is released, and the swing of the vertical feed arm 64 causes the roller 65a to engage with the engagement hole 69a of the follower cam 69 via the roller 64a. The follower cam 69 swings, and the swing drives the cylinder shaft 68, drives the follower cam shaft 66 via the one-way clutch 67, and engages one of the reduction gears 73 or 74 by selecting the shifter 76. , The cylindrical output shaft 75 is rotated, and a vertical feed shaft 82 connected to the output shaft 75 via an adjustment mechanism 87 and a vertical feed driver 79 fixed to the vertical feed shaft 82 are driven. .

At the upper part of the seedling stand frame 14, as shown in FIGS. 4 and 5, there is provided an idle shaft 95 for supporting the vertical feed follower 80 mainly composed of a sprocket via a bracket 94. A drive pin 81a mainly consisting of a chain is provided between the driven body 80 and the vertical feed driving body 79 to intervene between the pots of the seedling tray 15 to forcibly drive the seedling tray 15 vertically. A transport band 81 having a seedling pot 15 is provided on the seedling tray 15 by driving rotation of the vertical feed driving body 79.
The vertical feed can be performed for each pitch a.

After the rotation of the vertical feed operation member 54 has advanced and passed the driven cams 62 and 63, the driven cams 62 and 63 return to their original positions by the action of the return springs 90 and 93. When the vertical feed is completed, the next vertical feed is prepared.

The vertical feed amount is determined by the swing angle of the driven cam 62 by the vertical feed operation member 54. The speed increasing gear 7 by the shifter 76 of the switching gear 77 is used.
By selecting 3, 74, a vertical feed amount corresponding to these speed increasing ratios can be obtained.

That is, when there are a plurality of seedling pots in the seedling tray 15, for example, 25 mm square and 30 mm square, one of the speed increasing gears 73 and 74 depends on the size of the seedling pot 15a. Is selected, a vertical feed amount corresponding to the size of these seedling pots 15a can be obtained.

As shown in FIG. 3, the shifter 76 is provided with a shift shaft 96 in the drive case 55 through a bearing cylinder 97 so as to penetrate therethrough. And a switching lever 99 is attached to the shaft end of the case outer shaft portion of the shift shaft 96, and is moved in the axial direction of the cylindrical output shaft 75 by operating the lever 99. The drive case 55 is provided with a lever guide plate 100, and a guide groove 100 provided in the lever guide plate 100 is provided.
By means of a, it can be held at a switching position for switching from neutral to a low speed or high speed range.

As described above, the drive case 55 includes:
The vertical feed drive unit 98 having the drive unit 56 therein
And the drive unit 48 is connected to the seedling stand frame 1.
4 is detachably attached to the seedling frame 14 through the attachment portion 55a of the drive case 55, so that the drive portion 56 can be easily attached to the seedling stand frame 14, so that the assemblability can be improved. In addition, the driven shaft 60 having the cylindrical shaft 63a, the follower cam shaft 66, and the output shaft 75 are provided with a seedling frame.
Since it is attached to the drive case 55 rather than individually to the drive frame 55, in other words, it is attached to the drive case 55 before it is attached to the seedling frame 14, so that each of the shafts 60, 66, 75 can be mounted. The assembling error can be reduced. In particular, even if a gear increasing mechanism including the transmission gears 70 and 71 and the speed increasing gears 73 and 74 is configured between the follower cam shaft 66 and the output shaft 75, the assembling accuracy is improved. Since the vertical feeding timing and the vertical feeding amount of the seedling tray 15 can be made appropriate, and the drive case 55 can be made in a sealed state,
It is possible to prevent dust and the like from entering the drive unit 56, and even when performing maintenance, the seedling stand frame may be used.
Since it can be removed from the system 14, its maintenance can be easily performed.

In the implanting machine described above, the pushing cam 101 is provided at the center of the longitudinal feed drive shaft 37 as shown in FIG.
And the side frames 32a, 32b
A fixed support plate 102 is provided at a center portion of the support plate 102 via a fixed shaft 103, and the extrusion operation arm 105 is swingably supported on the support plate 102 via a support shaft 104. Roller 105 engaging with extrusion cam 101
a to intermittently swing the pushing operation arm 105 in conjunction with the vertical feed drive shaft 37, while interlocking with the swing of the operating arm 105,
Is pushed into the seedling pot 15 of the seedling tray 15 from which the seedlings are taken out by the seedling take-out nails 16 to push out the seedlings.

[0038]

According to the present invention, the seedling stand frame 14 is provided as described above.
A vertical feed drive case 55 having a mounting portion 55a is provided, and a drive portion 56 of the vertical feed mechanism Y is provided in the drive case 55 to form a vertical feed drive unit 48. Since the drive shaft 56, which is the main part of the vertical feed mechanism Y, can be easily attached to the seedling stand frame 14, and the assemblability can be improved. The accuracy of assembling the drive unit 56 can be improved, and the vertical feed timing and the vertical feed amount can be adjusted properly. In addition, troubles due to dust entering the drive unit 56 can be prevented, and maintenance is easy. You can do it.

[Brief description of the drawings]

FIG. 1 is a sectional view of a main part of a vertical feed mechanism.

FIG. 2 is a side view of a vertical feed drive unit.

FIG. 3 is an explanatory view showing a drive unit by omitting a drive case of a vertical feed drive unit.

FIG. 4 is a side view of the seedling supply device.

FIG. 5 is a partially omitted plan view showing only a vertical feed mechanism in the seedling supply device.

FIG. 6 is a partial cross-sectional plan view of the seedling supply device.

FIG. 7 is a front view of only a vertical feed driven cam of the vertical feed mechanism.

FIG. 8 is a front view of the unlocking driven cam to which the lock arm of the vertical feed mechanism is attached.

FIG. 9 is a side view of a transplanter to which the seedling supply device of the present invention is applied.

FIG. 10 is a side view of the transplanter with the hood and cover removed from FIG. 9;

FIG. 11 is a plan view of the transplanter shown in FIG.

FIG. 12 is a perspective view showing an interlocking portion between an output shaft provided with an adjusting mechanism and a vertical feed shaft.

[Explanation of symbols]

 14 Seedling stand frame 14a Seedling table 15 Seedling tray 37 Vertical feed drive shaft 48 Vertical feed drive unit 54 Vertical feed operation member 55 Vertical feed drive case 55a Attachment section 56 Drive section 69 Follower cam 79 Vertical feed drive

Continuation of the front page (72) Inventor Yozo Ogaki 2-181-1, Inaji, Amagasaki-shi, Hyogo Kamizaki High-Tech Koki Mfg. Co., Ltd. (56) References JP-A-4-173005 (JP, A) 48-6215 (JP, U) (58) Field surveyed (Int. Cl. ⁷ , DB name) A01C 11/02

Claims (1)

(57) [Claims] 1. A lateral feed mechanism X for reciprocally moving a seedling stand frame 14 of a seedling placing stand 14a on which a seedling tray 15 is placed.
At the end position of the reciprocating movement of the seedling frame 14 in the left and right directions,
In a seedling supply device of a transplanting machine including a vertical feeding mechanism Y for vertically feeding a seedling tray 15 placed on the seedling mounting table 14a,
The vertical feed mechanism Y includes a vertical feed drive shaft 37 having a vertical feed operation member 54, a drive section 56 having a follower cam 69 which operates in conjunction with the vertical feed operation member 54, and is linked with the drive section 56. And a vertical feed driving body 79 that rotates
A vertical feed drive case 55 having a mounting portion 55a to the seedling stand frame 14 is provided, and the drive portion 56 is provided in the drive case 55 to form a vertical feed drive unit 48.
A seedling supply device for a transplanting machine, wherein the drive unit 48 is attached to the seedling stand frame 14.