JP2520171B2 - Seedling transplanter - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION [Industrial field of application] The present invention places a plurality of plant seed bundles divided from a mother plant on the seedling placing surface of a seedling stand and raises the crop seedling bundles vertically. The present invention relates to a seedling transplanter provided with a planting claw for sending a crop seedling bundle sent out toward a seedling taking-out opening by a feeding mechanism, holding and planting it.

[Conventional technology]

In this kind of seedling transplanting machine, conventionally, the leading crop seedling bundle that has been sent out to the seedling taking-out opening by the vertical feeding mechanism is simply taken out by the planting claws and held and planted (for example, Japanese Patent Application No. 1-23387).

[Problems to be Solved by the Invention]

When adopting such a configuration, since this crop seedling bundle does not have root soil like that seen in mat seedlings, when the planting nail picks up and holds the crop seedling bundle, the planting nail Affect the seedlings of the crop somewhat shockingly. For this reason, the crop seedlings that are in a state of easy movement may move due to the impact force. For example, the leading crop seedlings and the next crop seedlings may be taken out at the same time, or the leading crop seedlings may be removed. There was room for improvement in some cases because there was no seedling in the position where it should be taken out laterally and it could not be taken out at all.

An object of the present invention is to provide a plant which can act on the leading plant seedling bundle and reliably perform the removal holding action by the planting nail.

[Means for solving the problem]

A characteristic configuration according to the present invention is that on the seedling surface of the seedling stand,
Place a plurality of crop seedlings separated from the mother stock, send out the crop seedlings toward the seedling take-out port by the vertical feed mechanism, take out the sent crop seedlings, hold and plant them. In a seedling transplanting machine provided with nails, on the seedling mounting surface of the seedling take-out port portion, with a partition wall that acts to divide the roots of the seedlings for each take-out unit by the planting nails, the value A seedling separating tool that operates prior to the nail attachment and separates the leading crop seedling bundle sent out toward the seedling picking opening from the subsequent crop seedling bundle and positions it at the seedling picking opening is provided. And its effects are as follows.

[Work]

When picking up and holding the crop seedling bundle with the planting claw, the leading working seedling bundle to be taken out is separated from the succeeding crop seedling bundle by the seedling separating tool, so the crop seedling bundle to be taken out is
The front and rear entanglement in the seedling feeding direction on the seedling stand is loosened. For the left and right seedlings of the crop seedlings to be taken out, a partition wall that divides the roots of the seedlings for each seedling taking-out unit is used to prevent entanglement at the roots with other crop seedlings. It is easy to position and hold only the crop seedling bundle, which is the unit for taking out with the attached nail.

〔The invention's effect〕

Therefore, when taking out with planting nails, it is possible to perform the separating action and the entanglement preventing action on both the stem and the root of the seedling, and it is possible to avoid taking out the succeeding seedlings by dragging as much as possible. It has become possible to prevent defective planting such as planting and stunting, and to prevent the seedlings from becoming disturbed near the seedling take-out port, enabling stable separation and take-out.

〔Example〕

The seedling planting device (A) for strawberries which is attached to the rear end of the traveling machine body (figure body) via the elevating link mechanism (1) will be described. As shown in FIG. 9, this seedling planting device (A) is
A seedling stand (2) that reciprocally moves laterally with a constant stroke, a feed case (3) that receives power transmission from the traveling machine body (not shown) side, and a plurality of pieces that extend rearward from the feed case (3). Planting case (4) and planting arm (5) pivotally supported on both lateral sides of this planting case (4)
A planting claw (6) attached to the tip of the planting arm (5), and a leveling float (7) arranged below the planting case (4).

Next, the structure of the seedling stand (2) will be described. 8th
As shown in Figures (a) and (b), this seedling stand (2) is divided into multiple places by the number of planting lines, and each row stores multiple rows of strawberries seedling bundles. . For this group of strawberries seedlings, a plurality of first partition walls (8) made of a resin plate for partitioning adjacent rows of seedlings are arranged side by side, and a plurality of first partition walls (8) are arranged. Is supported by round bar-shaped frames (9A) and (9B) that laterally pass through the upper end and the lower end of the strawberries seedling bundle (a) at the end on the upper side in the feeding direction, and also the strawberries seedling bundle (a). Is supported by a round bar-shaped frame (9A) that laterally penetrates only the upper end of the lower side end of the round bar-shaped frame (9A),
The insertion part of (9B) is laterally bulged to form a gap setting part (8a) with the adjacent first partition wall (8).

These round bar-shaped frames (9A) and (9B) are cantilevered to a partition wall (8A) at one end, and the other first partition wall (8) can be inserted and assembled from its free end. . Then, the first partition wall (8) at the other end is connected to the round bar-shaped frames (9A), (9
By assembling and fixing to the free end of B), a plurality of first partition walls (8) for one line of planting can be configured as a unit,
These units can be attached to and detached from the seedling stand (2). These first partition walls (8) are installed in such a state that they are spaced from the seedling surface by a certain height so that they act on the upper part of the stem portion of the storage straw grass. At the bottom end reaction position, the seedling squeeze plate (21) is first on both ends.
It is arranged so as to be supported by the partition walls (8A) and (8B). Strawberry seedling bundles (a) divided from the mother plant are housed in a vertical line between the adjacent partition walls (8) and (8), and the roots of the respective stored crop seedling bundles (a) are placed on the seedling scoop plate. Supported by (21), the operator puts this seedling Squeeze board (21) and the first
When the partition walls (8) and (8) are integrally mounted on the seedling placing stand (2) and the seedling squeeze plate (21) is pulled out above the seedling placing stand (2), it can be planted. Below this seedling scooping plate (21), there is provided a belt type vertical feed mechanism (10) for feeding the bundle of strawberries (a) toward the seedling take-out port (b). Mechanism (10) is a seedling stand (2)
A belt (10a) is constructed so as to transition between an idle wheel (11) at the upper end and a drive wheel (12) at the lower end.

On the seedling surface between the end of action of the vertical feed belt (10a) and the seedling take-out port (b), the strawberries are divided into one vertical row by the first partition walls (8) and (8). A second partition wall (13) that acts on the root of the seedling bundle (a) to prevent entanglement on the root side is erected on the seedling placement surface.

At the tip of the first partition wall (8) on the seedling take-out port (b) side, a receiving piece (14) for receiving the stem portion of the head bundle of strawberries (a) is placed sideways from the first partition wall (8). It is prevented from accidentally falling off from the seedling surface by the pushing action of the subsequent bundle of strawberries and seedlings (a) before being integrally extended and held by the planting claws (6). Further, the first partition wall (8) is temporarily assembled through the seedling scooping plate (21), and the root washing strawberries seedling bundle (a) is inserted between the first partition walls (8), and the first partition wall (8) is inserted. When the wall (8), the seedling scoop plate (21) and the strawberries seedling bundle (a) are placed on the seedling stand (2) integrally, the strawberries seedling bundle (a) causes the end of the first partition wall (8). The catch piece (14) that comes out of the part
Will stop.

Next, the seedling separating tool (15) will be described. As shown in FIG. 1 to FIG. 5, the seedling separating tool (15) is located above the planting claw (6) and stands upright at the rear end of the planting case (4). The arm (16), a pair of left and right second swing arms (17), (17) integrally swingably connected to the front of the first swing arm (16), and the first swing A main rod (18) connected to the arm (16) and the left second swing arm (17) in a four-link manner, and can swing up and down around the horizontal axis at the tip of the main rod (18). The fork-shaped tip grip portion (19) supported by the first
A third swing arm (20) pivotally supported at the rear end of the planting case (4) adjacent to the swing arm (16) and a fourth swing that swings integrally with the tip grip portion (19). It is composed of an arm (24) and a connecting rod (22) that integrally and swingably connects the fourth swing arm (24) and the third swing arm (20). The connecting rod (22) is connected to the second left side.
A plate-shaped bracket (17) extended from the swing arm (17)
a), and is urged to move rearward by a compression spring (23) interposed between the plate-shaped bracket (17a) and the intermediate flange portion (22a) of the connecting rod (22). ing. The third swing arm (20) biases the connecting rod (22) forward and the tip gripping portion (19) upward against the force of the compression spring (23). The first tension spring (25) is stretched over the second swing arm (17), and the second swing arm (17) pulls back the whole seedling separating device (15) backward. A tension spring (26) is installed. A stopper (not shown) is provided for keeping the tip grip portion (19) in a predetermined posture despite the pulling force of the first tension spring (25). Further, the constant rotation drive arm axially supported by the feed case (3) and the second swing arm (17) are connected by a connecting rod (27) to resist the tensile force of the second tension spring (26). Then, the seedling separating tool (15) is driven to circulate toward the seedling taking-out port (b). As shown in FIG. 4, the tip gripping part (19) is maintained in a posture along the main rod (18) in the non-acting state, and moves from that state toward the seedling picking port (b) to take out the seedling Hold the stem located in the mouth (b). In this state, as shown in FIG. 5, the first and second
The swinging arms (16) and (17) are in a frontward hanging posture, the distance between the plate-shaped bracket (17a) and the intermediate flange (22a) is shortened, and the pressing force of the compression spring (23) is increased. The connecting rod (22) moves rearward to compensate for the loss of the urging balance between the compression spring (23) and the first tension spring (25). Then, the tip gripping portion (19) in the posture along the main rod (18) swings downward while holding the stem portion of the crop seedling bundle (a). By this operation, the leading crop seedling bundle (a) is changed to the succeeding crop seedling bundle (a).
It is separated and moved to the seedling take-out port (b).

The structure of the planting claw (6) will be described. As shown in FIG. 6 and FIG. 7, the planting claw (6) has a pair of left and right main claws (6A), (6A), and an intermediate position between the main claws (6A), (6A). It consists of the auxiliary nail (6B) located, and the main nails (6A), (6A) hold the root of the crop seedling bundle (a) located at the seedling take-out port (b), and the auxiliary nail (6B). Enter the stem near the root and hold the crop seedling bundle (a). Since the auxiliary nail (6B) is shorter than the main nail (6A), the seedling does not easily fit between the nails (6A) and (6B) when grasping the seedling, and the seedling of the seedling is released when releasing the seedling onto the field. Stay away.

In the figure, (28) is a seedling pushing tool, which is formed so as to contact the main claw (6A) and the auxiliary claw (6B).

Further, the operation timing of the planting claw (6) and the seedling separating tool (15) is set such that the seedling separating tool (15) separates from the holding seedling at the moment when the planting claw (6) grips the seedling or immediately thereafter. There is. Moreover, the timing at which the seedling separating tool (15) separates from the holding surface may be switched according to the type of seedling.

With the above configuration, the seedling stand (2) is laterally fed by one row each time one bundle of seedlings is taken out, and first, the seedling separator (15) is activated to reach the upper part of the seedling take-out port (b). The fed plant seed bundle (a) is held and moved to the seedling take-out port (b), and the plant seed bundle (a) is taken out and held by the planting claws (6) and planted on the field.

[Another embodiment]

The seedling separating tool (15) is driven by a link mechanism synchronized with the planting claw (6), but the tip gripping part (19) may be driven by a dedicated actuator such as a hydraulic cylinder.

It should be noted that reference numerals are added to the claims for convenience of comparison with the drawings, but the present invention is not limited to the structures of the accompanying drawings by the entry.

[Brief description of drawings]

The drawings show an embodiment of a seedling transplanter according to the present invention, FIG. 1 is a side view showing an operating state of the seedling separating device, FIG. 2 is a side view showing the seedling separating device, and FIG. 3 is a tip of the seedling separating device. Fig. 4 is an operation principle diagram when the seedling separating device is in a standby state, and Fig. 5 is an operation principle diagram showing a state in which the seedling separating device grabs the leading seedling and moves it to the seedling take-out port, Fig. 6 is a side view showing the planting claw, Fig. 7 is a front view showing the planting claw, and Fig. 8 (a) is a partition wall assembled into a bundle of strawberries and seedlings before being placed on a seedling stand. FIG. 8 is a perspective view showing a state, FIG. 8 (b) is a perspective view showing a state where the one shown in FIG. 8 (a) is placed on a seedling stand, and FIG. 9 is an overall side view. (2) …… Seedling support, (6) …… Planting claws, (10) …… Vertical feed mechanism, (13) …… Partition wall, (15) …… Seedling separator, (a) …… Crop Seedling bunch, (b) ... Seedling outlet.

Claims (1)

(57) [Claims] 1. A plurality of crop seedling bundles (a) separated from a mother plant are placed on the seedling placing surface of a seedling stand (2), and the crop seedling bundles (a) are vertically fed ( A seedling transplanter provided with a planting claw (6) for sending out the plant seedling bundle (a) sent out toward the seedling taking-out port (b) by 10) and holding and planting it. A partition wall (13) is provided on the seedling placing surface of the seedling take-out port (b) to separate the roots of the seedlings for each take-out unit by the planting claw (6). It operates prior to (6) and separates the leading crop seedling bundle (a) sent out toward the seedling pickup opening (b) from the succeeding crop seedling bundle (a), and the seedling pickup opening ( A seedling transplanter provided with a seedling separating tool (15) located in b).