JP2001258318A - Seedling taking out apparatus for transplanter - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a seedling taking out apparatus for an transplanter capable of preventing the damage of a seedling by reducing the area of a part of a tine guide to be brought into contact with a seedling as small as possible. SOLUTION: In this seedling taking out apparatus for a transplanter having a tine 31 for thrusting the tip part of the tine into a root ball part of a seedling planted in a seedling tray and taking out the seedling from the seedling tray and a tine guide 48 for guiding the tine 31, the guide 48 is composed of a guide part 55 for slidably guiding the tine 31 and other parts except the guide part 55 and the guide part 55 is positioned closer to a tine tip end part than the other parts.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a seedling removing device for a transplanter.

[0002]

2. Description of the Related Art Various types of transplanting machines, such as a walking type, a riding type, and a tractor traction type, are known.
JP-A No. 05 and JP-A No. 12-41423 are known. This conventional device includes a seedling supply device that supplies seedlings planted in a pot portion of a seedling tray to a machine for each tray, a seedling removal device that removes soiled seedlings from the supplied seedling tray, and a seedling removal device. And a planting device for planting in a field.

[0005] As shown in FIG. 9, the seedling removing device has a seedling removing claw 61 slidably guided by a claw guide 60, and the nail 61 is pierced into a root pot portion 62 of the seedling to form a seedling 63.
From the pot portion of the tray. Then, in order to detach the seedling 63 from the nail 61,
The claw 61 and the claw guide 60 are relatively moved, and the claw guide 60 is moved.
The root pot 62 pierced was pushed out. As shown in FIG. 10, the claw guide 60 has a mounting portion 65 to the rod 64 and a front surface of a guide portion 66 for guiding the claw 61.
It was formed flush and the area of the front surface was widened. The claw guide 60 is attached to the rod 64 by a spring pin 67.
Was fixed at.

[0004]

The claw guide of the conventional seedling removal device has a large front surface area.
Inevitably, the contact with the foliage of the seedling increased, and the seedling could be damaged. If the seedling is damaged by contact with the nail guide, it will have a very bad effect on the growth of the seedling after transplantation. In particular, breaking the growth point causes growth delay. Also, when the seedling removal claw is worn out or when you want to replace it with another type of claw, the conventional method of fixing with a spring pin takes a very long time to replace the claw guide,
In particular, replacement at the work site was difficult.

Accordingly, an object of the present invention is to provide a seedling removal device for a transplanting machine in which the area of the nail guide in contact with the seedling is reduced as much as possible to prevent damage to the seedling. Another object of the present invention is to provide a seedling removal device for a transplanter that facilitates replacement of a nail guide.

[0006]

In order to achieve the above object, the present invention takes the following measures. That is, the feature of the present invention is that the root pot of the seedlings planted in the seedling tray,
In a seedling removal apparatus for a transplanting machine having a nail that pierces a nail tip and removes the seedling from the seedling tray and a nail guide for guiding the nail, the nail guide is slidable on the nail. And a portion other than the guide portion, and the guide portion is located closer to the tip of the claw than the other portion.

According to the present invention having the above-described structure, when the seedlings are taken out by the nails, the guide portion of the nail guide comes into contact with the seedlings, and the other portions hardly come into contact with the seedlings. Damage is prevented. In addition, the nail is
It may be a rod-shaped claw or a spatula-shaped claw. It is preferable that the claw guide is detachably attached by screw fastening means. Conventionally, a spring pin has been used for fixing, but fixing with a screw fastening means such as a bolt facilitates replacement of the claw guide.

[0008]

Embodiments of the present invention will be described below with reference to the drawings. FIG. 1 shows a walking type transplanter. The transplanter includes a traveling device 1 and a transplanting device 2 provided in the traveling device 1. The traveling device 1 has a vehicle body 3, and an engine (not shown), a transmission case 4, and the like are attached to the vehicle body 3. The engine and the transmission case 4 are covered with a hood 5. A pair of left and right front wheel support shafts 6 are provided in the front part of the vehicle body 3 so as to protrude in the left and right direction. A front wheel arm 7 is provided on the support shaft 6, and a front wheel 8 is rotatable at the tip of the arm 7. It is supported by.

A rear wheel support shaft 9 is provided from both left and right sides of the transmission case 4 so as to protrude in the left and right direction. A transmission case 10 is mounted on the support shaft 9, and a rear wheel 11 is provided at a tip end of the transmission case 10. Supported. A traveling power transmission shaft is inserted through the shaft center of the rear wheel support shaft 9, and the power of the engine is transmitted from the transmission shaft to the rear wheel 11 via the inside of a transmission case 10. The transmission case 10 is vertically swingable by the operation of a lifting cylinder 12. The movement of the elevating cylinder 12 is transmitted to the front wheel support shaft 6 via the interlocking link 13, the front wheel arm 7 also swings up and down, and the height of the front and rear wheels 8, 11 and the vehicle body 3 can be adjusted. . Also, by the operation of the rolling cylinder 14,
The left and right transmission cases 10 swing in opposite directions, and this swing allows the left and right front wheel arms 7 to swing in opposite directions via the interlocking link 14 so that the vehicle body 3 can be rolled in the left and right directions. . Left and right front wheel arm 7
, And the distance between the left and right transmission cases 10 can be adjusted freely, so that the wheel distance can be adjusted.

A machine frame 15 extending rearward is fixed to an upper portion of a rear portion of the transmission case 4. A handle 16 is attached to the rear end of the machine frame 15. Further, a planting frame 17 is attached to the lower portion of the rear part of the mission case 4 so as to extend rearward and swing vertically. The machine frame 15 and the planting frame 17
Is provided with the transplanting device 2. The transplant device 2
A lifting control device 18 provided at the lower abdomen of the transmission case 4, a seedling supply device 19 provided over a rear portion of the machine frame 15 and a handle 16, and the machine frame in front of the seedling supply device 19. Seedling removal device 2 provided on 15
0 and the planting frame 17 below the seedling removal device 20.
And a pressure-reducing device 22 provided on the planting frame 17 behind the planting device 21.

The elevation control device 18 has a leveling roller arm 23 provided on the lower abdomen of the transmission case 4 so as to be vertically swingable, and a leveling roller 24 is rotatably supported by the arm 23. . The leveling roller 24 is configured to roll on the top surface of the ridge. The swing of the arm 23 is controlled by a lift valve 26 via a lift sensor arm 25.
To control the lift cylinder 12. That is, the height of the front and rear wheels 8 and 11 is adjusted so that the vehicle body 3 maintains a constant height with respect to the ridge height. That is, the planting depth is controlled to be constant.

As shown in FIG. 2, a bracket 7 is fixed to the leveling roller arm 23.
Are provided with a plurality of mounting holes 28 in upper and lower stages. A ground leveling roller 24 is mounted at any position above or below the mounting hole 28 so that the mounting position can be changed. The leveling roller 24 is provided with a scraper 29, and the position of the scraper 29 can be changed. conventionally,
In order to set the planting depth to be shallow or deep, the height of the leveling roller 24 has been changed with a hand lever.

That is, as shown by the solid line and the imaginary line in FIG. 2A, the angle of the leveling roller arm 23 is changed.
As described above, in the case where the angle of the arm 23 is changed, the control valve 26 is controlled via the elevation sensor arm 25 even when the arm 23 is close to vertical and horizontal. The amount of change transmitted to the rotor is different. That is, the planting depth adjustment range differs between the position indicated by the solid line and the position indicated by the virtual line. Therefore, in this embodiment, as shown in FIG. 2B, by changing the mounting position of the leveling roller 24, the adjustment range is the same in the case of deep planting and in the case of shallow planting. Have been.

The seedling supply device 19 has a seedling table 30 for intermittently feeding the seedling tray in the vertical and horizontal directions. The seedling mounting table 30 is arranged to be inclined upward toward the rear so that the seedlings can be taken out from the seedling tray. The seedling tray has a pot portion partitioned in a grid pattern, and pot seedlings (plants with soil) are planted in the pot portion. The seedling removal device 20 is for taking out soiled seedlings one by one from the seedling tray and supplying the seedlings to the planting device 21.
1 and a driving device 32 that performs a seedling extracting operation and a discharging operation of the nail 31.

The planting device 21 has a planting cylinder 33 supported by a parallel link mechanism and moving in an elliptical trajectory that is long in the vertical direction and short in the front-rear direction. After receiving the seedling at the top dead center, the planting cylinder 33 descends and pierces the top surface of the ridge to pierce the planting hole, and is opened and closed by an opening / closing mechanism (not shown).
Open and rise, leave the seedlings in the planting holes and plant. The crushing device 22 has a crushing wheel support frame 34 pivotally supported in the middle of the planting frame 17 so as to be vertically movable,
A pair of left and right pressure reduction wheels 35 are rotatably supported by the support frame 34.

The crushing wheels 35 are arranged to roll on the ridge top surfaces on both left and right sides of the planting hole. The seedling supply device 19, the seedling removal device 20, and the planting device 21 are driven by power from an engine transmitted via the transmission case 4. FIGS. 3 to 6 show the seedling removal device 20.
The details are shown. The seedling removal nails 31 are provided as a pair of left and right. The claw 31 is formed in a round bar shape, and its tip is pointed so as to be easily pierced. A nail mounting shaft 36 having an axis perpendicular to the longitudinal direction of the nail is fixed to the base of the nail 31. This claw mounting shaft 3
6 is a claw mounting member 3 so that it can rotate around its axis.
7 is attached.

The claw mounting member 37 is fixed to the tip of a cylindrical shaft 38. An intermediate portion of the cylindrical shaft 38 in the axial direction is held by a holding cylindrical portion 40 of a holding body 39 so as to be slidable in the axial direction. A rear end of a cylindrical shaft 38 protruding from the holding cylindrical portion 40;
A compression spring 41 is interposed between the holding cylinder 40 and the rear end. The compression spring 41 allows the cylindrical shaft 38
Is urged backward (to the left in FIG. 3),
1 is urged in the storage direction (the direction opposite to the direction in which the tip protrudes). An extruding link 42 is rotatably supported by the holding body 39 via a support shaft 43, and the claw extracting member 37 is engaged with the extruding link 42 via a long hole. The extruding link 42 swings in the direction of the arrow a in FIG. 3 by the drive device 32, so that the seedling removal claw 31 moves in the direction of the arrow b.

A lock arm 44 for regulating the movement of the claw 31 in the direction of the arrow b is pivotally supported at the rear end of the cylindrical shaft 38. The engagement of the lock arm 44 with the holder 39 prevents the cylinder shaft 38 from moving. An operating piece 45 for releasing the engagement between the lock R 44 and the holding body 39 is pivotally supported by the holding body 39. The engagement between the lock arm 44 and the holder 39 is released by the rotation of the operation piece 45 in the direction of arrow c in FIG. A seedling removing rod 46 is inserted through the cylindrical shaft 38 in a penetrating state. This rod 46
A claw guide mounting body 47 and a claw guide 48 are detachably attached to the distal end of the bracket with mounting bolts shown as an example of a screw fastening means 49. The claw guide mounting body 47 has a rod insertion hole 50 at the center, and its outer shape is formed in a hexagonal shape. A screw hole 51 communicating with the insertion hole 50 is formed in the hexagonal bottom surface.

The claw guide 48 is formed by a base portion 52 abutting against the hexagonal bottom surface of the mounting member 47, a rising portion 53 rising from both ends of the base portion 52, and a bent portion formed from the upper end of the rising portion 53 further forward. Projection 54 and the projection 5
4 has a guide portion 55 that rises upward from the front end.
A guide hole 56 through which the claw 31 is slidably inserted is formed in the guide portion 55. The base 52 has a bolt insertion hole. The claw guide 48 has its base 52 attached to the hexagonal bottom surface of the claw guide mounting body 47 and is fixed to the rod 46 by screw fastening means 49. By fixing the claw guides 48 with the screw fastening means 49 in this manner, replacement can be facilitated as compared with a conventional fixing method using a spring pin.

The claw guide 48 is provided on the claw 31.
55, which guides the slidably, and the guide 5
5, the guide portion 55 is located closer to the root mortar than the other portions 52, 53, 54 when the claws 31 pierce the root mortar. It is configured to be. That is, the guide portion 55 is located closer to the claw tip portion than the other portions 52, 53, 54. The seedling removing rod 46 is urged in a direction indicated by an arrow d in FIG. 3 by a compression spring interposed between the cylindrical shaft 38 and the rod 46 in the cylindrical shaft 38. The movement of the rod 46 in the direction of arrow d is
6, a stopper 57 fixed to the rear end of the
And is prevented by the engagement. When the operating piece 45 rotates in the direction of arrow c in FIG. 3, the engagement between the stopper 57 and the operating piece 45 is released, and the rod 46 moves in the direction of arrow d. As a result, the rod 46 is provided at the tip of the rod 46. The nail guide 48 moves in the direction of the tip of the nail 31 and pushes the root mortar pierced by the nail 31 to detach the root mortar from the nail.

FIG. 4 shows the stored state of the claws 31.
From the state of FIG. 4, the nail 31 is pierced into the root pot of the tray while the nail 31 is projected by the driving device 32 without moving the nail guide 48 (the state of FIG. 3). At this time, the claw guide 48 comes into contact with the foliage of the seedling. In the present invention, the claw guide 48 includes a guide portion 55 for slidably guiding the claw 31 and a portion 52 other than the guide portion 55, 53,5
4 and the guide portion 55 is connected to the other portions 52, 53,
Since it is located closer to the root pot than 54, the contact area with the seedlings is smaller than that of conventional ones, and the damage to the seedlings is reduced.

Thereafter, the seedlings are taken out of the tray by the movement of the holder 39 by the driving device 32, and the holder 39 is further moved so that the root pot is located at a lower position, and the claw guide 48 is pushed out at the lower position. Then, the root pot is detached from the nail 31 and the seedling is transferred to the transplant tube located below. Even when the nail guide 48 is pushed out, damage to foliage by the nail guide 48 is prevented. 7 and 8 show an embodiment in which the seedling removal nail 31 is a spatula-shaped nail instead of the round bar nail.

The spatula-shaped claw has an L-shaped cross section and is arranged substantially symmetrically to the left and right. Since this spatula-shaped claw gives greater support resistance to the root mortar than the round bar-shaped claw, when the root mortar of the soiled seedling is pinched and taken out, the seedling may not fall off the nail 31. Is prevented. The nail guide 48 in the case of this spatula-shaped nail also has a guide portion 55 for slidably guiding the nail 31 and other portions 52 and 5 other than the guide portion 55, as in the above embodiment.
In the state where the nail 31 pierces the root pot portion, the guide portion 55 is connected to the other portion 52, 54.
It is located closer to the root pot portion than 53 and 54.

The present invention is not limited to the embodiment described above. For example, the transplanting machine may be a riding type or a tractor traction type. The present invention is not limited to the one provided with a pair, and may be a single claw. Further, although the claw guide and the claw guide mounting body are formed separately, they may be integrally formed.

[0025]

According to the present invention, the area of the portion of the nail guide in contact with the seedling is reduced as much as possible, and damage to the seedling at the time of removing the seedling can be prevented. Also, replacement of the claw guide becomes easy.

[Brief description of the drawings]

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

FIG. 2 is a detailed view illustrating a mounting structure of a leveling roller.

FIG. 3 is a side view showing a seedling removal state of the seedling removal device according to the embodiment of the present invention.

FIG. 4 is a side view showing a claw storing state of the seedling removing device according to the embodiment of the present invention.

FIG. 5 is a detailed view illustrating a mounting structure of a leveling roller.

FIG. 6 is a front view of a claw guide according to the embodiment of the present invention.

FIG. 7 is a side view of a main part of a seedling removal device showing another embodiment of the present invention.

FIG. 8 is a front view of FIG. 7;

FIG. 9 is a side view of a seedling removal device showing a conventional example.

FIG. 10 is a sectional view taken along line AA of FIG. 9;

[Explanation of symbols]

 Reference Signs List 20 seedling removal device 31 claw 48 claw guide 49 screw fastening means 55 guide portion

Claims (4)

[Claims] 1. A transplant having a nail for piercing a tip of a nail into a root pot of a seedling planted in a seedling tray to remove the seedling from the seedling tray, and a nail guide for guiding the nail. In the seedling removal device of the machine, the claw guide includes a guide portion that slidably guides the claw, and another portion other than the guide portion, and the guide portion has a claw tip more than the other portion. A seedling removal device for a transplanter, which is located on the side of the part. 2. The seedling removal device according to claim 1, wherein the nail is a rod-like nail. 3. The apparatus according to claim 1, wherein the nail is a spatula-shaped nail. 4. The claw guide is detachably attached by screw fastening means.
4. The apparatus for removing a seedling of a transplanter according to any one of items 3 to 3.