JPH0870634A - Structure for vertical seedling feed part of seedling transplanter - Google Patents

Abstract

PURPOSE: To provide a structure for a vertical seedling feed part capable of simplifying the evacuating operation of seedling pushing rods in supplying seedlings and a moving mechanism thereof and easily performing the seedling supply operation in spite of the obtained sure vertical feed operation by forcedly pushing the seedlings with two upper and lower seedling pushing rods. CONSTITUTION: This structure for a vertical seedling feed part is obtained by installing upper and lower seedling pushing rods 13 and 14 capable of acting on the stem tip and root part of each seedling on a seedling-carrying platform 5 and providing an interlocking means for synchronizing and interlocking the upper and lower seedling pushing rods 13 and 14 with a vertical feed mechanism 9 so as to forcedly push the seedlings with the upper and lower seedling pushing rods 13 and 14, following the driving with a vertical feed mechanism 9, and constituting the upper and lower seedling pushing rods 13 and 14 so as to enable the positional change from an operating position for bringing the upper seedling pushing rod 13 into contact with the stem tip of the seedling and an evacuating position for moving the upper seedling pushing rod 13 upward from the operating position and permitting the passage of a seedling feed box containing the seedlings housed therein, in a rush transplanter constituted by sliding and charging a seedling feed box 4 in each row seedling carrying part of a seedling-carrying platform 5, and then pulling the seedling-carrying platform 5 to the rear so as to supply only the seedlings.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention mainly relates to a structure of a vertical seedling feeding section in a seedling placing table in a transplanter for transplanting seedlings into which seedlings such as strawberries are sewn. The present invention relates to a technique for obtaining a reliable vertical feeding function while simplifying the operation of supplying seedlings, in which the seedling supply box is configured not to be pulled out and loaded.

[0002]

2. Description of the Related Art For example, in a straw transplanter, Japanese Patent Laid-Open No. 5-37 is known.
As disclosed in Japanese Patent Laid-Open No. 11-115, one having a structure in which a spare seedling is mounted on the common seedling mounting table for the supply box,
As disclosed in Japanese Patent No. 3, there is a structure in which a seedling supply box is pulled out and only seedlings are mounted on a seedling mounting table. In the latter structure, as shown in the latter publication, a seedling pushing plate (reference numeral 20) for pushing the seedlings by the force of sliding movement due to its own weight is provided to assist the vertical feeding of the seedlings. The device is designed to ensure vertical feed.

[0003]

However, the seedlings that come into contact with the seedling pushing plate do not always have a uniform surface state, and the seedling pushing plate is left and right due to the uneven hitting on the left and right sides. There was a case where it was tilted and caught, and it was difficult for the boosting function to be fully exerted. When seedlings are supplied, as shown in FIG. 2 of the latter publication, the seedling pushing tool (reference numeral 20) is lifted considerably high so as not to interfere with seedling supply, and a relatively large lifting mechanism for that purpose. However, the seedling replenishing operation was complicated and troublesome. An object of the present invention is to obtain a seedling vertical feeding section capable of reliably vertically feeding seedlings in a transplanter of a type in which the seedling supply box is not loaded on the seedling mounting table, while simplifying the operation during seedling supply.

[0004]

[Means for Solving the Problems] In order to achieve the above object, the present invention is to slide-load a seedling supply box containing a preliminary seedling onto each row seedling placing portion of a seedling placing base from above, In the seedling vertical feeding structure of the seedling transplanter configured to pull out this seedling supply box backwards to supply seedlings, the upper and lower seedling pushers that act on the tip and root of the seedlings mounted on the seedling mounting table. Equipped with a rod, the upper and lower seedling pushing rods are provided with interlocking means for synchronizing and interlocking these upper and lower seedling pushing rods with the vertical feeding mechanism so that the upper and lower seedling pushing rods forcibly push the seedlings as the vertical feeding mechanism is driven. The position can be changed to an action position where it can be pushed by touching the tip of the seedling and a retracted position that moves upward from this action position and allows passage of the seedling supply box containing the seedlings. This is a characteristic configuration.

[0005]

[Advantage] According to the above characteristic structure, the top of the seedling is pushed by the upper seedling pushing rod and the root of the seedling is pushed by the lower seedling pushing rod. Action (See, for example, Japanese Patent Laid-Open No. 4-66014)
Will be able to function as well. When replenishing seedlings, it is advisable to retract only the upper seedling pushing rod upward and load the lower seedling pushing rod on the seedling placing table so that the bottom of the seedling supply box is applied. In other words, it is only necessary to allow the upper seedling pushing rod, which is originally at a high position, to escape a little upward, and there is no need to move it upward much as in the conventional case. Therefore, the position of the upper seedling pushing rod can be changed with a relatively simple mechanism, and the interlocking mechanism allows the upper and lower seedling pushing rods to be synchronized with the vertical feed mechanism to forcibly push the seedlings to ensure a reliable vertical feed operation. become.

[0006]

As a result, by forcibly pushing the seedlings with the upper and lower two seedling pushing rods, the retracting operation of the seedling pushing rods at the time of seedling supply and the movement mechanism thereof are simplified while obtaining a reliable vertical feed operation. As a result, a vertical feed unit was obtained that facilitates seedling supply work.

[0007]

Embodiments of the present invention will be described below with reference to the drawings in the case of a transplanter for strawberries which is an example of crop seedlings. FIG. 1 shows a straw transplanter, 1 is a traveling machine body, 2 is an engine bonnet, 3 is a preliminary seedling storage stand, 4 is a seedling supply box on which the stocked strawberries are placed, 5 is a seedling stand, 6 Is a planting mechanism for picking up and planting seedlings one by one from the lower end of the seedling stand 5. In this strawberry transplanter, the seedling supply box 4 is slid from the upper side onto the seedling placing table 5, and then the seedling supply box 4 is inserted.
It has a structure that pulls out to the rear and supplies only seedlings.
Next, the structure relating to the seedling supply will be described.

As shown in FIG. 6, the seedling supply box 4 is composed of left and right side walls 4a, 4a, a front wall 4b, a rear wall 4c, and a bottom plate 4d, and swings around the horizontal axis P at the lower end of the front end of the bottom plate 4d. A short front wall 4b is pivotally supported so that it can be dynamically opened and closed. An opening / closing lever 4e supported on a side wall 4a near the rear wall 4c and a front wall 4b are interlockingly connected by a rod 4f, and the front wall 4b can be freely opened / closed by swinging the opening / closing lever 4e.

As shown in FIGS. 3 to 5, the seedling placing table 5 is for 6 rows having 6 rows of each row seedling placing portion 5a, and the frame walls 7 at both ends of the tall and the inside 5 of the short are provided. A partition wall 8 is provided, and a vertical feed mechanism 9 that operates for each row and seedling placement portion 5a is provided. The vertical feed mechanism 9 includes a pair of upper and lower rolling wheels 1.
A belt 12 with protrusions is wound around 1, 10 together with each row seedling placing portion 5a, and the single shafts 11a, 10a of the upper and lower wheels 11, 10 are commonly used, and all belts with protrusions are provided. 1
The two are configured so that the same amount of vertical feed operation is performed at the same time. An electric motor M is used as a drive source, and the switch 32 is actuated at the lateral feed stroke end on the left and right sides of the seedling placing table 5, so that the electric motor M is fed vertically by a predetermined amount. The structure is such that it is driven temporarily.

A pair of upper and lower seedling pushing rods 13 and 14 which act on the rear end of the seedling and are forcedly pushed are provided. That is, the upper and lower seedling pushing rods 13 and 14 that act on the stem tips and roots of the seedlings mounted on each row seedling placement portion 5a are provided, and the upper and lower seedling pushing rods 13 and 14 are driven by the drive of the vertical feed mechanism 9. In order to forcibly push the seedlings, the upper and lower seedling pushing rods 13 and 14 and the vertical feed mechanism 9 are provided with interlocking means A for synchronizing and interlocking.
The interlocking means A is composed of an upper chain mechanism 15, a lower chain mechanism 16 and an interlocking mechanism 17, which are provided on the left and right frame walls 7 and 7, respectively.

The upper chain mechanism 15 is constructed by winding an upper chain 21 around front, rear, and middle sprockets 18, 19, 20. The upper seedling pushing rod 13 is provided on the left and right upper chains 2.
It is installed over 1,21. Lower chain mechanism 16
Is constructed by winding the lower chain 24 around the front and rear sprockets 22, 23, and the lower seedling pushing rod 14 is laid across the left and right lower chains 24, 24. The interlocking mechanism 17 is
An interlocking chain 25 that interlocks the upper and lower chain mechanisms 15 and 16, and a drive chain 26 that interlocks the lower chain mechanism 16 and the vertical feed mechanism 9. Therefore,
When the vertical feed mechanism 9 is driven, the upper and lower chain mechanisms 1
5 and 16 are driven at the same speed, and the protrusion 12 and the upper and lower seedling pushing rods 13 and 14 simultaneously move by the same amount.

Further, as shown in FIGS. 2 and 3, an arm 27 for supporting the upper intermediate sprocket 19 and the upper front sprocket 18 is constructed so as to be capable of swinging up and down about the rotation axis Z of the upper intermediate sprocket 19. There is. That is, the left and right arms 2
7, 27 are integrated by the connecting portion 28, and the engaging portions 29, 29 at the left and right ends thereof and the substantially downward U-shaped support rod 30 supported by the left and right frame walls 7, 7 can be engaged with each other. Configured.

That is, the support rod 30 is connected to the upper groove 2 of the engaging plate 29.
When inserted into 9a and engaged, the upper front, middle, and rear three sprockets 18, 19, 20 are aligned in a straight line in a side view to be in a rearward-pressing action state, and the support rod 30 is engaged with the lower groove 29b. The upper front sprocket 18 is raised, and even if there is the upper seedling pushing rod 13 at that portion, the seedling can be supplied to the seedling supply state.

Further, a contact type remaining amount switch 31 which is a seedling remaining amount sensor is attached to the rear sprocket 20 portion of the upper chain mechanism 15, and the upper seedling pushing rod 13 is attached as the seedling is consumed.
When the remaining amount switch 31 is pressed, the electric motor M described above is reversely driven and the upper and lower seedling pushing rods 13, 1 are pushed.
4 so as to automatically return to the upper limit position suitable for seedling replenishment, the electric motor M, the remaining amount switch 31, and the left and right switches 32, 3
There is provided a control device 33 that links the two.

Therefore, as shown in FIG. 2, when the upper and lower seedling pushing rods 13 and 14 are returned to the upper limit position,
The arm 27 is switched to the seedling supply state, the seedling supply box 4 is inserted into each row seedling placing portion 5a with the bottom plate 4d thereof being pressed against the lower seedling pushing rod 14, and the opening / closing lever 4e is operated to operate the front wall 4b. Open and then pull out the seedling supply box 4
You can replenish the seedlings. In other words, the upper seedling pushing rod 13,
It is configured to be capable of changing its position between an action position where it can be pushed by contacting the tip of the seedling and a retracted position that moves upward from this action position and allows passage of the seedling supply box 4 containing the seedlings. ing.

[Other Embodiment] The upper chain mechanism 15 is configured to be capable of lifting and swinging around the rotation axis of the upper rear sprocket 20 so that the upper seedling pushing rod 13 can be moved to the retracted position. By supporting the seedling pushing rod 13 on one of the right and left upper chains 21 so that the seedling pushing rods 13 can swing up, and by being attached to the other upper chain 21 so as to be connectable and detachable,
The upper seedling pushing rod 13 may be movable to the retracted position. Further, the seedling pushing rods 13 and 14 may be rods, pipes, or strip steels and may be any thin member required, and they are collectively referred to as "seedling pushing rods".

In the claims, reference numerals are provided for convenience of comparison with the drawings, but the present invention is not limited to the configuration shown in the attached drawings.

[Brief description of drawings]

[Fig. 1] Side view of the strawberry transplanter

FIG. 2 is an action diagram showing a procedure for supplying seedlings to a seedling mounting table.

FIG. 3 is a side view showing a structure of a seedling stand part.

FIG. 4 is a cross-sectional view of an end portion on the seedling placing table side showing the structure of the interlocking device.

[Figure 5] Partial view of the upper edge of the seedling stand

FIG. 6 is a perspective view showing the structure of a seedling supply box.

[Explanation of symbols]

 4 Seedling supply box 5 Seedling placing table 5a Each row seedling placing section 9 Vertical feed mechanism 13 Upper seedling pushing rod 14 Lower seedling pushing rod A Interlocking means

Claims (1)

[Claims] 1. Each row seedling placing portion (5a) of the seedling placing table (5)
After the seedling supply box (4) containing the spare seedlings is slide-loaded from the upper side, the seedling supply box (4) is pulled out rearward to replenish the seedlings. A feed unit structure, comprising upper and lower seedling pushing rods (13), (14) that act on the stem tip and root of the seedling mounted on the seedling placing table (5), and of the vertical feed mechanism (9). The upper and lower seedling pushing rods (1
3) and (14) are provided with interlocking means (A) for synchronously interlocking these upper and lower seedling pushing rods (13) and (14) with the vertical feed mechanism (9) so as to forcibly push the seedlings. The seedling pushing rod (13) is brought into contact with the stem tip of the seedling to push it backward, and the seedling feeding box (4) in which seedlings are housed is moved upward from this working position to allow passage. The vertical seedling structure of the seedling transplanter, which can be relocated to the retracted position.