JP3369401B2 - Transplant machine - Google Patents

Description

Detailed Description of the Invention

[0001]

TECHNICAL FIELD The present invention relates to a transplanter suitable for use in transplanting vegetable seedlings such as cabbage and lettuce.

[0002]

2. Description of the Related Art Conventionally, on a main frame mounted on a traveling vehicle, a seedling placing stand, a seedling taking-out device for taking out seedlings on the seedling placing stand, and a seedling taken out by the device is received and planted in a field. There is known a multi-row transplanter in which a plurality of transplantation units each including a transplanting device are mounted in the left-right direction (for example, Japanese Patent Application No. 3-225219).

With such a multi-row transplanter, two or more seedlings can be planted in the field at the same time, and the efficiency of planting work can be greatly improved.

[0004]

By the way, in the above-mentioned multi-row transplanter, the distance between the transplanting units is adjusted so that the inter-row spacing is appropriate according to the kind of seedlings to be planted. Need to be configured. From such a need, a seedling placing stand, a seedling removing device, which constitutes a transplant unit,
Although it is considered that the planting device can adjust the distance in the left-right direction individually, adjustment work is required for each of these components, and positioning work between each component must also be performed. These operations are very complicated because they do not occur.

Therefore, an object of the present invention is to make it possible to easily and quickly adjust the distance between transplanting units in a multi-row transplanter having two or more threads.

[0006]

In order to achieve the above object, the present invention takes the following technical means. A first technical means taken by the present invention is, on a main frame mounted on a traveling vehicle, a seedling placing stand, a seedling taking-out device for taking out seedlings on the seedling placing stand, and receiving the seedling taken out by the device. A plurality of transplanting units each of which is configured to be planted in a field in a field are mounted, and the distance between the transplanting units can be adjusted. Is to be interlocked so as to move integrally when adjusting the distance between the transplanting units.

As a result, when the distance between the transplanting units is adjusted, the seedling placing table, the seedling removing device and the planting device that constitute each transplanting unit are moved integrally. In addition to speeding up and facilitating the work, the components move integrally while the positioning between the components is maintained, so that the components are prevented from being displaced, and the operation of each transplant unit after the adjustment of the left-right distance is prevented. Stability·
Improves reliability.

A second technical means taken by the present invention is, on a main frame mounted on a traveling vehicle, a seedling placing stand, a seedling taking-out device for taking out the seedlings on the seedling placing stand, and a device for taking out the seedlings. A plurality of transplanting units, each consisting of a planting device for receiving the received seedlings and planting them in the field, are mounted in the left-right direction,
It is configured to be able to adjust the lateral distance between the transplantation units, and supports a plurality of movable frames arranged in the left-right direction on the main frame so that the movable frames can be moved in the lateral direction. The planting frame is supported so that it can move in the left and right directions and can swing up and down, and the seedling platform of each transplant unit is supported in the main frame so that it can move in the left and right directions. The transplanting device for each transplantation unit is mounted on each separate transplantation frame, and the seedling stand, the movable frame, and the transplantation frame are installed on each left and right side of each transplantation unit. This is to interlock and connect so as to move integrally in the left-right direction when adjusting the direction distance.

According to this, since the planting device is mounted on the planting frame that can swing up and down, the planting device can be configured to swing up and down according to the unevenness of the field surface, and the planting depth can be increased. Can be kept substantially constant. Furthermore, when adjusting the distance between transplanting units, the seedling platform, seedling extracting device and planting device that compose each transplanting unit will be moved integrally, so speeding up such adjustment work.・ Since it is easy to move and the components move integrally while they are positioned, the components are prevented from being displaced, and the stability and reliability of the operation of each transplantation unit after adjusting the left-right distance. The property is improved. Furthermore, since each seedling take-out device and each planting device are mounted on different frames, it is possible to unitize each component and improve assembly workability and maintainability. This also contributes to simplification of the structure.

Further, a drive main shaft of the transplantation unit is provided on the main frame, and a power transmission mechanism for transmitting the rotational power of the drive main shaft to each planting device is attached to each of the planting frames, so that the rotary power of the drive main shaft is transmitted. By mounting a power transmission mechanism for transmitting to the seedling extracting device to each movable frame, it is possible to adjust the lateral distance while simplifying the power transmission mechanism.

A third technical means taken by the present invention is that a main frame mounted on a traveling vehicle, a seedling placing stand, a seedling taking-out device for taking out the seedlings on the seedling placing stand, and the taking-out device. It is equipped with multiple transplant units in the left-right direction, which consist of a planting device that receives the seedlings and plant them in the field, and the lateral distance between each transplant unit can be adjusted. A lateral feed mechanism that laterally feeds the device relative to the left and right is provided, and each seedling mounting table is moved toward and away from the first screw shaft extending in the left and right direction by forward and reverse rotation of the screw shaft. The second screw shaft is rotatably and reversely provided on the main frame in parallel with the first screw shaft so that it can be rotated forward and backward, and the frame of each seedling extracting device is connected to the second screw shaft by the second screw shaft. Can be moved toward and away from each other by rotating the screw shaft forward and backward. The first screw shaft and the second screw shaft are interlockingly connected so as to synchronize the lateral movement of the seedling mounting table and the lateral movement of the seedling extracting device, and the first screw shaft is A drive means configured to be movable in the left-right direction with respect to the second screw shaft is provided to rotate and drive the first screw shaft and the second screw shaft, and the frame of each seedling extracting device and the frame of each planting device are provided. The transplanting unit is integrally moved in the left-right direction, and the frame of the planting device is connected to the main frame so as to be vertically swingable.

As described above, by moving the screw shaft in the left-right direction, the movement of each transplantation unit in the left-right direction can be regulated only by stopping the screw shaft without providing a separate lock mechanism. And the adjustment work can be simplified. Further, by operating the drive means, the spacing adjustment work can be performed quickly and easily.
Further, since two screw shafts are provided in parallel, and the seedling mounting base and the movable frame are screwed to each of them, and the first screw shaft is movable in the left-right direction relative to the second screw shaft, Even when the seedling stand, seedling take-out device and planting device are linked together so that they can move in the left-right direction when adjusting the distance between the transplanting units, the lateral feed mechanism enables lateral movement of the seedling stand. . In addition, since the planting frame is configured to be vertically swingable and is configured to move in the horizontal direction integrally with the movable frame, the planting device is vertically swung according to the unevenness of the field. The depth of application can be kept substantially constant.

[0013]

BEST MODE FOR CARRYING OUT THE INVENTION Embodiments of the present invention will be described below with reference to the drawings. The passenger transplanter 1 shown in FIG. 1 includes a pair of left and right transplantation units 3 behind a passenger traveling vehicle 2.
It is a double-row planting type that includes a plurality of transplant units 3 while traveling in the longitudinal direction across the ridges formed in the field.
The soil block seedlings raised in the seedling tray T are automatically planted in the ridges at predetermined intervals.

The transplanting unit 3 includes a seedling tray placing table 51 (seedling placing table) to which a cell seedling tray T having a large number of pot portions P in which soil block seedlings have been raised is mounted vertically and horizontally, and on the seedling tray placing table 51. From the seedling tray T, the soil block seedlings are picked up one by one and conveyed to the planting device 70, and the planting device 70 for planting the seedlings transferred from the seedling removing device 80 in the ridges is mainly used. It is configured. The detailed structure of the transplant unit 3 will be described later.

On the front part of the body frame 4 of the traveling vehicle 2, a driving part (not shown) including an engine, a mission and the like is mounted, and the driving part is covered with a bonnet 5 on the upper side. At the rear of the bonnet 5, a steering section having a steering wheel 6 is provided, and at the rear of the steering section, a driver's seat 7 is provided. The body frame 4 is supported by a pair of left and right front wheels 8 and a pair of left and right rear wheels 9 so that the vehicle body frame 4 can travel.

The front wheels 8 are steerable wheels, and the power from the prime mover can be transmitted to the front wheels 8 and the rear wheels 9, and the spare seedling mount 10 is provided on the left side of the bonnet 5 and the right side is provided on the right side. An empty tray mounting table (not shown) is provided in the. As shown in FIGS. 2 and 3, the mounting bracket 13 is provided at the rear portion of the vehicle body frame 4 via an elevating link mechanism having a top link 11 and a pair of left and right lower links 12.
Are mounted so that they can be moved up and down by the expansion and contraction of the lifting cylinder 14.

As shown in FIG. 4, a main frame 15 on which the left and right transplantation units 3 are mounted is attached to the mounting bracket 13 in a suspended manner via a pair of left and right parallel links 16L and 16R. . Mainframe 15
As shown in FIG. 5, is configured in a gate shape that opens rearward in a plan view, and by omitting the portion that connects the left and right rear ends, the moment acting on the support shaft 17 of the parallel link 16 is significantly increased. The load on the shaft 17 is reduced.

As shown in FIG. 4, a roller 18 rotatable around the vertical axis is provided at the center of the front end of the main frame 15, and the roller 18 is attached to the lower portion of the mounting bracket 13 and has an arcuate shape in rear view. Is rotatably abutted on the rear surface of the support plate 19. Further, as shown in FIG. 3, an engaging member 20 that engages with the front surface of the support plate 19 is attached to the main frame 15, so that the main frame 15 can be moved up and down during transplanting work, while traveling on the road, and ascending and descending by the elevating link mechanism. At times, etc., the roller 18 is prevented from rising from the support plate 19.

As shown in FIGS. 2 and 4, a pillar 21 standing upright is fixed to the left and right side portions of the front end of the main frame 15, and between the right pillar 21 and the right link 16R. The swing cylinder 22 is interposed. The rocking cylinder 22 detects the positional deviation of the main frame 15 with respect to the ridge in the left-right direction by an appropriate detection means (not shown), and the expansion and contraction is controlled based on the detection signal. , The ridges meander,
Even if the traveling vehicle meanders, the planting position of the seedlings on the ridge can be corrected to an appropriate lateral position.

Although the swing cylinder 22 can be interposed between the mounting bracket 13 and the main frame 15, it is interposed between the parallel link 16 and the main frame 15 (support 21) as described above. As a result, the main frame 15 can be greatly swung left and right by slightly expanding and contracting the cylinder 22, and swivel right and left can be swiftly performed.

An electromagnetic clutch pack 23 is attached to the lower center of the front end of the main frame 15. The input shaft 24 of the clutch pack 23 projects forward, and the input shaft 24 receives the rotational power from the PTO shaft 25 provided in the traveling vehicle 2 as shown in FIG. 26,
It is transmitted via the relay shaft 27 and the second transmission shaft 28.
The shafts 25, 26, 27, 28 and 24 are sequentially connected via a universal joint.

The relay shaft 27 has a bearing 30 at the lower end of a bracket 29 provided at the lower rear portion of the vehicle body frame 4.
Is supported through. Further, a detection means 31 for detecting the rotation angle (or the number of rotations) of the shaft 27 is provided in the middle of the shaft of the relay shaft 27. The electromagnetic clutch pack 23 is connected / disconnected every time the relay shaft 27 rotates by a predetermined angle (rotation number), so that the inter-plant adjustment of seedlings sequentially planted in the ridge can be performed.

As shown in FIGS. 3 and 6, a gear box 32 is fixedly attached to the main frame 15 behind the clutch pack 23, and the output shaft 33 of the clutch pack 23 is connected to the gear box 32. Power is transmitted to the drive spindle 35 in the left-right direction via the bevel gear 34. The drive spindle 35 includes a bearing 36 attached to the left and right side portions of the main frame 15 and a gearbox 32.
The shaft 37 is rotatably supported by a bearing 37 provided on the side of the bearing, and the portion except the portion supported by the bearings 36, 37 is formed in a hexagonal shaft shape.

As shown in FIGS. 6 and 7, a pair of left and right planting frames 38 are mounted on the drive spindle 35 so as to be movable in the axial direction and swingable about the axis. In addition,
The planting frame 38 is formed in the shape of a long rectangular frame in the front and rear. A planting device 70, which will be described later, is mounted on the frame 38, and the rear portion of the frame 38 is crushed.
A soil cover roller 39 is attached.

The mounting structure of the planted frame 38 will be described in detail. A transmission cylinder shaft 40 in which a hexagonal shaft-shaped drive main shaft 35 has a hexagonal cylindrical inner surface and a cylindrical outer peripheral surface.
Is externally fitted so as to be slidable in the axial direction and integrally rotatable with the drive main shaft 35. Then, on the outer periphery of the transmission cylinder shaft 40, the cylindrical portion 4 provided at the front end portion of the planting frame 38.
1 is rotatably fitted over a bearing 42. Therefore, the rotation of the drive main shaft 35 causes the transmission cylinder shaft 40 to rotate.
Rotate integrally, but the planted frame 38 does not swing integrally with the drive main shaft 35. Further, when the planted frame 38 is moved in the left-right direction, the transmission cylinder shaft 40 is also integrally moved together with the frame 38. The power transmission cylinder shaft 40 transmits power to each drive portion of the transplant unit 3. This power transmission mechanism will be described later.

Above the drive main shaft 35, as shown in FIGS. 6 and 8 to 10, a slide guide member 43 in the shape of a rectangular tube extending over substantially the entire length of the main frame 15 in the left-right direction is attached and fixed to the main frame 15. Has been done. A slide rail 44 (guide member) having a substantially U-shaped cross section is provided between the left and right rear ends of the main frame 15. The slide rail 44 and the rail 44 are positioned above the planting frame 38. A pair of left and right movable frames 45 are mounted so as to be movable in the left and right directions. The movable frame 45 is formed in a front and rear long rectangular frame shape, and a seedling take-out device 80 described later is mounted on the frame 45.

The mounting structure of the movable frame 45 will be described in detail. A rectangular tubular sliding portion 46 is provided at the front end of the movable frame 45, and the sliding portion 46 is slidable in the guide member 43 in the axial direction. Is fitted on. In addition, the movable frame 45
A pair of left and right rollers 48 are attached to the front and rear midway portions of the movable frame 45 via brackets 47. The rollers 48 are engaged with the slide rails 44, and the rear end of the movable frame 45 is suspended from the main frame 15. Supported by. By supporting the movable frame 45 in this way, even if the entire movable frame 45 is moved in the left-right direction by applying a moving force in the axial direction to the sliding portion 46 at the front end of the movable frame 45, It is possible to prevent the occurrence of resistance due to the above and to ensure smooth operation.

As shown in FIG. 2, the planted frame 38 is supported at the rear end of the movable frame 45 in a suspended manner via a spring (not shown) and a link mechanism 49, and has a ridge height. It is possible to swing up and down following. The left side planting frame 38 and the left side movable frame 4
5, and the right side planting frame 38 and the right side movable frame 45 are interlockingly connected so as to integrally move in the left-right direction. This connection structure will be described. As shown in detail in FIG. 6, the sliding portion 46 of the movable frame 45 is shown.
A link bracket 50 extending toward the tubular portion 41 of the planting frame 38 is welded and fixed thereto. The front end portion (lower end portion) of the bracket 50 is formed in a substantially plate shape.
On the other hand, the tubular portion 41 of the planting frame 38 is provided with a pair of projecting pieces 65 in a left-right opposed shape with a space therebetween for fitting the tip portion of the linkage bracket 50.

Therefore, when the movable frame 45 moves in the left-right direction, the tip end of the linkage bracket 50 engages between the pair of left and right projecting pieces 65, so that these frames 38, 4
5 moves integrally in the left-right direction. On the other hand, planted frame 3
When 8 swings, the tip of the linkage bracket 50 is movable in the front-rear direction between the pair of projecting pieces 65, so that the swinging movement of the planting frame 38 is not hindered.

Above the movable frame 45, as shown in FIG.
As shown in FIGS. 5, 8 and 10, a pair of left and right seedling tray mounting bases 51 (seedling mounting bases) are mounted on the main frame 15 so as to be movable in the left and right directions. Explaining this mounting structure, a support rail 52 having a U-shaped cross section is installed between the upper ends of the left and right columns 21 at the front end of the main frame 15, and a pair of front and rear U-shaped cross sections is provided between the left and right side parts of the main frame 15. Support rails 53 are erected, and rollers 54 provided at appropriate places on the mounting table 51 side are engaged with these support rails 52, 53 to smoothly slide in the left-right direction, but in the front-back direction. Also, it is supported so as not to move vertically.

The rear side support rail 53 is arranged in a front open C shape, and the slide rail 44 of the movable frame 45 described above is welded and fixed back to back on its rear surface (rear surface). These rails 44 and 53 reinforce the rear end side of the main frame 15 which is substantially U-shaped in plan view. As shown in FIGS. 5 and 8, the left and right seedling tray mounting bases 51 are connected to each other by a horizontal connecting rod 55 (first screw shaft), and thus the left and right seedling tray mounting bases 51 are integrated. It is designed to move horizontally.

The connecting rod 55 (first screw shaft) has a hexagonal shaft at the center, and has screw parts 55L, 55 on the left and right ends.
R is formed. The left end side threaded portion 55L and the right end side threaded portion 55R are reverse threads to each other.
Nut members 56 provided on the bottom surfaces of the left and right seedling tray mounting bases 51 are screwed onto the 5L and 55R, respectively.
Therefore, by rotating the connecting rod 55, the lateral distance between the left and right seedling tray mounting bases 51 can be adjusted.

The central hexagonal shaft portion of the connecting rod 55 is fitted in the hexagonal hole formed in the central portion of the sprocket 57 rotatably supported by the main frame 15 so as to be slidable in the axial direction. . An adjustment drive shaft 58 (second screw shaft) is rotatably supported by the main frame 15 via a bearing 59 in parallel with the connecting rod 55. An electric motor 60 (driving means) is connected to one end of the adjustment drive shaft 58, and the drive shaft 58 can be rotated forward and backward by the motor 60. In addition, as this motor 60,
If a worm gear type motor with a reducer (for example, a small wiper motor) is used, the rotation of the drive shaft 58 is completely stopped when the power source of the motor is cut off, and an accurate adjustment operation can be easily performed.

A sprocket 61 is provided substantially at the center in the axial direction of the drive shaft 58, and a chain 62 is hung around the sprocket 57 fitted onto the connecting rod 55 and the sprocket 61, and the adjustment drive shaft 58 is provided. The connecting rod 55 and the connecting rod 55 rotate synchronously. Also,
On the outer circumference of the drive shaft 58 (second screw shaft), screw grooves are formed on the right side and the left side from the center of the shaft so that the screws are opposite to each other. The pitch of the thread grooves is the same as the pitch of the thread grooves formed on the connecting rod 55. The upper end of the bracket 47 fixed to the right movable frame 45 is screwed into the right-hand threaded portion of the drive shaft 58, and the drive shaft 5
An upper end portion of a bracket 47, which is fixed to the left movable frame 45, is screwed into the left-hand thread portion of 8.

Therefore, when the electric motor 60 is operated to rotationally drive the adjustment drive shaft 58, the seedling take-out devices 80 on the left and right movable frames 45 move left and right in the directions toward and away from each other and the left and right planting frames. The planting device 70 on the 38 also moves laterally integrally with the seedling removing device 80,
Further, since the rotational power of the adjusting drive shaft 58 is transmitted to the connecting rod 55 via the chain 62, the seedling extracting device 8
The left and right seedling tray mounting bases 51 also move left and right by the same amount as the movement amount of 0.

As described above, the seedling tray placing table 51, the seedling extracting device 80 and the planting device 70, which constitute the left and right transplanting units 3, are interlockingly connected so as to integrally move left and right, so that the transplanting units 3 are connected to each other. It is possible to easily and quickly adjust the distance in the left-right direction.
It is also possible to prevent the lateral positions of 0 and 80 from shifting. Further, the drive shaft 5 having left and right threads formed at both ends of the shaft.
Since the left and right transplantation units 3 are adjusted in the horizontal distance by the 8 and the connecting shaft 55, the left and right transplantation units 3 move symmetrically evenly from the center of the vehicle body and prevent the left and right transplantation units 3 from being displaced from the center of the vehicle body. However, the operator can easily drive without worrying about it.

Since the screw shafts 55 and 58 are used for adjustment as described above, the planting unit 3 is screwed at the time when the motor 60 is stopped without separately providing a lock mechanism (fixing means). Can be fixed by shafts 55, 58,
The structure can be simplified, and since the locking operation and the unlocking operation thereof are unnecessary, it is possible to simplify the striation adjustment work.

Further, as will be described later, the connecting shaft 55 is movable in the left-right axial direction relative to the sprocket 57 regardless of the position of the seedling tray mounting table 51 which is reciprocally and laterally fed by the lateral feeding mechanism 92. Therefore, the line spacing can be adjusted, and the line spacing can be changed even during the planting work. The operation switch of the electric motor 60 can be provided at any position. However, if the switch is arranged on the operation panel near the driver's seat 7, even when the striation adjustment is performed during the transplanting work, The adjustment operation can be performed with one touch by simply operating the lever (switch operation) while sitting in the driver's seat 7 without getting off the traveling vehicle 2, thus improving workability.

Next, the detailed structure of the transplant unit 3 will be described. As shown in detail in FIG. 7, the planting device 70 of each transplanting unit 3 has a planting hole opening device 71 that is projected into a ridge for planting seedlings, and the planting hole opening device 71 can be vertically swung. It is mainly composed of a swinging link mechanism 72 supported by. A crank arm 74, which is driven to rotate around a shaft 73, is connected to a middle portion of the swing link mechanism 72, and a sprocket 75 integrated with the shaft 73 and a transmission cylinder shaft 40 externally fitted to the drive main shaft 35 are connected to the crank arm 74. The integrally formed sprocket 76 is interlockingly connected via a chain 77, and the planting aperturer 71 is vertically swung by the rotational power of the drive spindle 35.

When the down-hole opening device 71 is moved downward, it is opened by the opening link 78 to form a transplant hole in the ridge and drop seedlings contained therein into the transplant hole. In addition, when the planting aperturer 71 is moved upward, the spring 7
It is closed by the biasing force of 9 and is ready to receive seedlings below the seedling take-out device 80. As shown in detail in FIG. 11, the seedling take-out device 80 of each transplantation unit 3 reciprocates the seedling take-out pawl 83 by the pawl operating mechanism 82 that is operated by the rotational power transmitted to the main shaft 81, and this seedling take-out device 80 Nail 8
3, the soil block seedlings are taken out one by one from the pot portion P of the seedling tray T mounted on the seedling tray placing table 51 and supplied to the planting and opening device 71. This claw actuating mechanism 8
2, the seedling take-out claw 83 makes one reciprocating movement with respect to one swinging movement of the planting opener 71 as follows.

That is, the lower part of the block soil in the pot part P is pierced with the seedling take-out claws 83 obliquely from the rear, and the soil block seedlings are moved backward while moving slightly upward so that the soil block seedlings are removed from the pot part P. Pull out, then move downward while changing the posture of the soil block seedling so as to be in a substantially vertical posture, release the soil block seedling at the lower end position of the movement locus, and drop it from the upper side to the planted opener 71 moved upward. Supply. After that, it returns to the original position and the same operation as described above is repeated.

Rotational power of the drive main shaft 35 is transmitted to the main shaft 81 of the seedling take-out device 80 of each transplantation unit 3 by separate power transmission means for each of the left and right transplantation units 3. By doing so, the main shaft 81 of the left and right seedling take-out devices 80 can be configured separately, and the movable frame 4
It is possible to prevent the occurrence of straining when the 5 is moved left and right. Spindle 8
As shown in FIGS. 6, 9 and 10, the power transmission means to the gear 1 has a gear 84 integrally formed with the transmission cylinder shaft 40 fitted onto the drive main shaft 35. The gear 84 is meshed with a gear 85 rotatably supported on the front side of the movable frame 45. A sprocket 86 is integrally formed with the gear 85, and the sprocket 86 and the movable frame 45
A chain 88 (first transmission means) is wound around a sprocket 87 rotatably supported on a rear side of the sprocket 87A via a relay shaft 87A. Further, the sprocket 87 is integrally provided with a sprocket 89 on a coaxial line 87A, and the chain 9 extends over the sprocket 89 and a sprocket 90 integral with the main shaft 81 (the input shaft of the seedling extracting device).
1 (second transmission means) is wound.

The front and rear sprockets 86, 87 supported by the movable frame 45 are attached to a horizontal shaft located below the movable frame 45. Therefore, the chain 88 for interlocking and connecting these sprockets 86, 87 is It is wound back and forth below the seedling tray mounting table 51. Sprockets 87, 8 supported on the rear side of the movable frame 45
9 is arranged rearward of the rear end of the main frame 15 and rearward of the slide rail 44 of the movable frame 45. Also, the seedling take-out device 8
0 is also mounted on the movable frame 45 behind the rear end of the main frame 15 and behind the slide rail 44 of the movable frame 45.

Then, the seedling tray mounting table 51 is arranged at a position farther forward than the main shaft 81 and the chain 91, so that the constituent elements of the power transmission means do not pass near the seedling taking-out position by the seedling taking-out claw 83. ing. By doing so, it becomes possible to easily confirm the state of taking out the seedlings, and it becomes easy to take out the seedlings and perform various operations for adjusting the seedling tray mounting table. Also, the chains 88, 91 of the power transmission means
However, since it passes through the transmission path of the shortest distance, deviations such as loosening are less likely to occur.

Further, by making the unit for driving the seedling take-out device 80 independent for each unit as described above,
Since the units 3 do not interfere with each other at the time of adjusting the lateral positions of the planting device 70, the seedling placing table 51, and the seedling extracting device 80, the constituent elements 51, 70, 8 of each unit 3
0 can be integrally moved in the left-right direction, the striation adjustment work can be easily and quickly performed, and a multi-row transplanter having three or four or more stitches can be easily configured. .

The same sprocket, chain, etc., which are the constituent elements of each of the above-mentioned power means, can be used on the left and right sides, facilitating the management of parts and increasing the assembly work line and reducing the cost. Can be planned. The seedling tray mounting table 51 is configured to be reciprocally traversed by a traverse feed mechanism 92, and every time the seedling tray T is traversed laterally by one row, the seedling tray T is vertically traversed by one pitch. A vertical feed mechanism 93 for feeding is provided.

As shown in FIGS. 5, 6, 9 and 10, the lateral feed mechanism 92 includes a lateral feed shaft 94 disposed below the seedling tray mounting table 51 on the left side. An inner end portion (right end portion) of the lateral feed shaft 94 is rotatably supported by a bearing 96 attached to the left movable frame 45 via a support frame 95, and an outer end of the lateral feed shaft 94. The portion (left end portion) is a transmission gearbox 98 (gear case) attached to the left movable frame 45 via a bracket 97.
Is connected to the output shaft 98a.

A sprocket 99 is provided on the input shaft 98b of the gear box 98, and the sprocket 99 and
Gear 85 supported on the front side of the left movable frame 45
The sprocket 100 that rotates integrally with the chain 101
The horizontal feed shaft 94 can be rotationally driven by the rotational power of the drive main shaft 35.

A gear shift operating lever 102 is provided above the gear box 98. By swinging the lever 102 left and right, the relative rotational speed of the lateral feed shaft 94 with respect to the rotational speed of the drive main shaft 35 is changed. The speed can be changed in two steps, and it is possible to correspond to two kinds of seedling trays T having different pitches between pot portions. Side feed shaft 9
A Napier screw having a so-called traverse groove 94a formed over substantially the entire length in the axial direction is used for 4, and a sliding body 103 that engages with the groove 94a is externally fitted to the lateral feed shaft 94. The sliding body 103 is connected to the lower part of the left seedling tray mounting table 51. Since the left and right seedling tray mounting bases 51 are integrally connected by the connecting rod 55 as described above, the left and right seedling tray mounting bases 51 can be reciprocated left and right by the rotation of the lateral feed shaft 94.

The gear box 98 is arranged at the outer end (left end) of the lateral feed shaft 94, and when the seedling tray mounting table 51 is laterally fed by the lateral feed shaft 94 to the inner end side (right end side). The outer edge of the tray mounting table 51 has a gear box 98.
Since it is configured to be positioned on the inner end side in the left-right direction (see FIG. 5), the gear box 98 is exposed at this time so that the seedling tray switching lever 102 can be easily operated. Further, when the distance between the transplanting units 3 is narrowed (see FIGS. 6 and 8), the gear box 98 is arranged inside the left and right ends of the main frame 15, and at this time, the gear box 98 is arranged. The main frame 15 can be protected from obstacles and can have a compact appearance.

As shown in FIG. 5, the vertical feed mechanism 93 has vertical feed chains 104 attached to the left and right of each seedling tray mounting table 51, and the chain 104 is rotatable on the seedling tray mounting table 51. Upper and lower sprockets 10 supported by
It is wound around 5,106. In this chain 104,
The sprocket 105, 10 has an engaging pin (not shown) fitted between the pot portions P of the seedling tray T on the mounting table 51.
The seedling tray T can be conveyed in the vertical direction by driving 6 to rotate.

The lower sprocket 106 of the right seedling tray mounting table 51 is integrally provided with a rectangular cylindrical shaft 107, and the cylindrical shaft 107 is attached to the lower sprocket 107 of the left seedling tray mounting table 51. Square shaft 10 provided integrally
8 is axially slidably fitted inside, and the vertical feed mechanism 93 of the left and right seedling tray mounting bases 51 is interlocked and coupled,
It corresponds to the distance adjustment between the transplantation units 3.

On the left side surface of the left seedling tray mounting table 51, as shown in FIG. 2, the angular axis 1 is used to vertically feed the seedling tray T by one pitch by swinging the operating link 109.
An intermittent feeding means 110 for rotating the 08 is provided. In order to support two kinds of seedling trays T having different pot-to-pot pitches, the rotation angle of the angular shaft 108 due to one swing of the operation link 109 can be adjusted.

The operation link 109 is provided when the seedling tray T is laterally fed to the left and right end positions by the lateral feed mechanism 92.
A cam 111 integrally provided on the lateral feed shaft 94 makes one swing. The transverse feed mechanism 92 described above
The vertical feed mechanism 93 conveys the seedling tray T on the seedling tray mounting table 51 vertically and horizontally so that the soil block seedlings can be sequentially taken out from each pot portion P at the seedling taking-out position by the seedling taking-out device 80.

The present invention is not limited to the above embodiment, but can be modified in design as appropriate. For example,
As a traveling vehicle, a so-called walking type vehicle can be adopted in addition to a passenger type vehicle. In the case of a walking type traveling vehicle, the main frame may also be used as the body frame of the traveling vehicle.

Various types of seedling mounts can be adopted. As the seedling take-out device, in addition to the one using a seedling take-out nail, a type that takes out and takes out the stem portion or root soil portion of the soil block seedling can be adopted.

[0057]

As described above, according to the present invention,
When adjusting the distance between transplanting units, the seedling platform, seedling extracting device, and planting device that compose each transplanting unit are moved integrally, which makes the adjustment work quick and easy. In addition to being able to improve the stability of each transplantation unit, it is possible to prevent the displacement of each component because the components move together while the positioning between each component is being performed, and the stability and reliability of the operation of each transplantation unit after adjusting the left-right distance It is possible to improve the property.

[Brief description of drawings]

FIG. 1 is an overall side view of a transplanter.

FIG. 2 is an overall side view of a transplant unit.

FIG. 3 is a side view showing a mounting structure of a main frame on a traveling vehicle.

FIG. 4 is a rear view of the same.

FIG. 5 is an overall plan view with a part of the transplanting unit omitted when the distance between the left and right transplanting units is set to the maximum.

FIG. 6 is a developed cross-sectional view showing the power transmission mechanism of the transplant unit and the support structure of each frame in a rear view.

FIG. 7 is an overall side view of the planting device.

FIG. 8 is a plan view showing a main frame structure and a main part of a distance adjusting mechanism between the left and right transplantation units, showing a state in which the distance between the left and right transplantation units is set to a minimum.

FIG. 9 is a plan view showing a main part of a power transmission mechanism to the seedling take-out device and a lateral feed mechanism of the seedling placing table, showing a state in which the distance between the left and right transplantation units is set to the maximum.

FIG. 10 is a side view showing a support structure of a seedling placing table and a main part of a power transmission mechanism to a seedling take-out device and a lateral feed mechanism.

FIG. 11 is a sectional side view of a main part of the seedling take-out device.

[Explanation of symbols]

2 traveling vehicles 3 transplant units 15 mainframe 35 Drive Unit Spindle 38 Frame of planting device (planting frame) 45 Seedling extractor frame (movable frame) 51 seedling stand 55 1st screw shaft (connecting shaft) 58 Second screw shaft (adjustment drive shaft) 70 Planting device 80 Seedling extractor

Claims (3)

(57) [Claims] 1. A main frame mounted on a traveling vehicle (2).
The seedling mounting table (51) and the seedling mounting table (5
1) A seedling take-out device (80) for taking out the upper seedlings, and the device
Receive the seedlings taken out by (80) and plant them in the field
Transplanting unit composed of an implanting device (70)
Multiple (3) are installed in the left-right direction, and each transplant unit
(3) Transplanter configured to be able to adjust the lateral distance between
The main frame (15) has a plurality of
A number of movable frames (45) can be moved left and right
Are supported by and are arranged in the left-right direction.
The planted frames (38) can be moved to the left and right
Moreover, the seedling stand (51) of each transplant unit (3) is supported so that it can swing up and down.
It is supported by the arm (15) so that it can move left and right, and
Seedling extractor (80) for knit (3)
Each transplant unit mounted on the movable frame (45)
The planting device (70) of (3) is for each different planting frame.
It is mounted on the boom (38), and the seedling placing table (51) and movable for each transplant unit (3).
The frame (45) and the planted frame (38) are each transplanted.
When adjusting the horizontal distance of the unit (3)
A transplanter characterized by being linked so as to move in the direction . 2. A drive spindle (35) for an implant unit (3).
Is provided on the main frame (15), and the drive spindle (3
Power transmission for transmitting the rotational power of 5) to each planting device (70)
A moving mechanism is attached to each planting frame (38).
The rotary power of the drive spindle (35) is transferred to the seedling take-out device (80).
The power transmission mechanism that is transmitted to each movable frame (45)
The transplanter according to claim 1 , wherein the transplanter is attached to each . 3. A main frame mounted on a traveling vehicle (2).
Seedling mount (51) and seedling mount (5)
1) A seedling take-out device (80) for taking out the upper seedlings, and the device
Receive the seedlings taken out by (80) and plant them in the field
Transplanting unit composed of an implanting device (70)
Each transplant unit (3) is equipped with multiple (3) in the left-right direction.
The left and right distance between the
Place the platform (51) relative to the seedling extraction device (80)
Transplant with lateral feed mechanism (92 ) that laterally traverses
In the machine, each seedling mounting table (51) has a first screw shaft extending in the left-right direction.
With respect to (55), the forward / reverse rotation of the screw shaft (55)
They are screwed so that they can approach and separate from each other.
The second screw shaft (58) is main parallel to the 1 screw shaft (55).
It is provided on the frame (15) so as to be rotatable in the forward and reverse directions, and the second
Frame of each seedling extraction device (80) with respect to the same axis (58)
(45) is generated by forward and reverse rotation of the second screw shaft (58).
They are screwed so that they can approach and separate from each other.
1 screw shaft (55) and 2nd screw shaft (58)
Left and right movement of (51) and right and left of seedling picking device (80)
It is linked and linked to synchronize the direction movement,
1 screw shaft (55) is lateral to the second screw shaft (58)
The first screw shaft (55) and the first screw shaft (55)
The drive means (60) for rotating the two screw shafts (58)
There is a frame (4) for each seedling extraction device (80).
5) and the frame (38) of each planting device (70)
The transplant units (3) move together in the left-right direction
Moreover, the frame (38) of the planting device (70) is the main frame.
A transplanter, which is connected to the boom (15) so as to be vertically swingable .