JPS6331522Y2 - - Google Patents

Description

[Detailed description of the invention] The present invention relates to a seedling transfer device for a transplanter, especially a self-propelled riding transplanter, and is designed to properly transfer seedlings while transferring them from a lateral transfer mechanism to a downward transfer mechanism. The purpose of the present invention is to transport the plants in a suitable posture so that they can be planted well, and to make it possible to change the transport pitch.

For example, as a self-propelled passenger transplant machine,
Publication No. 48804 is disclosed.

In this conventional example, the driver feeds the seedlings from the seedling box by inserting them into the planting mechanism, which results in the seedlings being fed quite quickly, sometimes resulting in forgetting or delaying feeding, and causing shortages. This may cause the plants to become clumps or cause uneven planting pitches.

Therefore, attempts have been made in the art to solve the above-mentioned problems by assembling a seedling transfer device to a self-propelled riding transplanter.

By the way, in general, a seedling transfer device in a self-propelled riding transplanter has a lateral transfer mechanism and a downward transfer mechanism, and the driver, who is an operator, places the seedlings on the transfer body of the lateral transfer mechanism. , and is configured to laterally move the seedlings and deliver them to a downward transfer mechanism, and further supply them to a downward planting mechanism.

The terminal end of the lateral transfer mechanism and the start end of the downward transfer mechanism intersect, and when transferring seedlings at this intersection, slips may occur in the seedlings, resulting in uneven seedling spacing and posture. It is extremely difficult to place seedlings at regular intervals,
As a result, the seedlings planted are not spaced at regular intervals or are planted at an angle. Furthermore, since the planting pitch differs depending on the crop, it is necessary to change the transfer pitch, but it has been difficult to change the pitch in the past.

The present invention solves these problems, and includes a lateral transfer mechanism that transfers seedlings while placing them thereon, and a mechanism that intersects with the delivery end of the lateral transfer mechanism and holds the transferred seedlings between the legs. and a downward transfer mechanism for supplying the seedling to a lower planting mechanism, wherein the transfer body of the lateral transfer mechanism has engaging portions that can engage at least near the roots of the seedlings and are spaced apart in the transfer direction. A plurality of transfer bodies having engagement portions with different intervals are exchangeably wound between the pulleys, and the transfer start end of the downward transfer mechanism intersects with the delivery end of the lateral transfer mechanism. It is characterized by being provided with

Hereinafter, embodiments of the present invention will be described in detail with reference to the drawings.

Figures 1 and 2 show an overall outline of a self-propelled passenger transplanter 1, with reference numeral 2 indicating the vehicle body, and 3 indicating a pair of left and right front wheels, which have a steering function. Reference numeral 4 denotes a pair of left and right rear wheels, which constitute driving wheels. In this embodiment, an engine 5 mounted on the vehicle body 2 drives a transmission mechanism in a side transmission case 6 and a transmission mechanism in a pair of left and right side transmission cases 7. It is said that each can be driven via the following.

8 is a furrower, 9 is a planting mechanism, and 10 is a soil covering mechanism, which are respectively arranged between the front wheel 3 and the rear wheel 4.

In this embodiment, the rear part of a swinging frame 12 whose front part is pivotally supported between the vehicle bodies 2 around a horizontal axis 11 is urged in the direction of contact with the ground by an elastic mechanism 13, and grooves are formed in the swinging frame 12. A container 8, a planting mechanism 9 for planting seedlings B in the planting groove A (see Fig. 4) formed by the trencher 8, and a pair of soil covering rings on the left and right in this example for covering the planted seedlings B with soil. Soil covering mechanisms 10 each consisting of 14 are arranged.

15 is a driver's seat, which is provided on the vehicle body 2 between the front wheels 3 and the rear wheels 4 and closer to the rear wheels.

16 is a seedling transfer device, which is arranged in front of the driver's seat 15.

As shown in FIG. 3, the seedling transfer device 16 includes a lateral transfer mechanism 17 that transfers the seedlings B while placing them thereon, and a lateral transfer mechanism 17 that transfers the seedlings B while intersecting with the sending end 18 of the lateral transfer mechanism 17 to transfer the transferred seedlings B. It is mainly composed of a downward transfer mechanism 19 that feeds the seeds to the lower planting mechanism 9 while holding them therein.

8 and 5-7, a first embodiment of the seedling transport apparatus 16 is illustrated.

In each of these figures, 20 is a support frame;
It can be raised and lowered by left and right raising and lowering guide mechanisms 21, and is supported by the vehicle body 2 via a raising and lowering drive body 22.
Note that a telescopic cylinder, a screw jack, or the like can be used as the lifting/lowering driving body 22.

The support frame 20 is U-shaped in plan as shown in FIG. 2, and the seedling transfer device 16 is attached to the driver's seat 15 side of the vertical surface.

Reference numeral 23 denotes a mounting frame for the lateral transfer mechanism 17, which is attached to one side of the upper part of the support frame 20, in this example, on the right side. It is supported in the front-rear direction.

A pair of pulleys 26 are rotatably provided at both ends of the right support shaft 24, and the center portion is held by an adjustment bolt 27 with a handle, and the adjustment bolt 27 is screwed into the right end of the mounting frame 23 so as to be freely retractable. The right support shaft 2 is inserted by rotating the adjustment bolt 27.
4 moves laterally within the movement groove 28 of the mounting frame 23.

On the other hand, a pulley 29 is rotatably provided at the center of the left support shaft 25, and a pair of disk bodies 30 are provided at both ends of the pulley 29 so as to be able to move forward and backward with respect to the pulley 29. It is urged toward the pulley 29 by a coil spring 31. A transfer body 32 shown as a V-belt is wound between each side of the pulley 29 and the truncated cone portions of both the disk bodies 30 and between each pulley 26, so that a continuously variable transmission means of the lateral transfer mechanism 17 is provided. is configured.

The transfer body 32 has a large number of engaging portions 33 in the form of trapezoidal or triangular protrusions on the transfer surface side at regular intervals in the longitudinal direction of the transfer.

As shown in FIG. 7, the transfer body 32 having the engaging portion 33 has both ends of the belt formed into abutting portions 33A,
An endless band is formed by removably connecting the abutting portions 33A with a stopper 33B, and the pitch of the engaging portions 33, that is, the interval P is, for example, 28 mm, 30 mm, etc.
A plurality of different sizes such as 32 mm and 32 mm can be freely changed and wound between the pulley 29 side and the pulley 26.

That is, the distance P between the engaging portions 33 can be changed by removing the stopper 33B, wrapping it around the pulleys 29 and 26, and then fixing the stopper 33B. Furthermore, between the upper surfaces of the transfer body 32, there is a sliding plate 34 on which the seedling B slides on substantially the same surface as the mounting frame 2.
It is fixed at 3.

The downward transfer mechanism 19 has a pair of left and right endless flat belts 35 and 36 which are hung across the delivery end 18 of the lateral transfer mechanism 17 in a direction perpendicular to the feed end 18 of the horizontal transfer mechanism 17. The clamp transfer body 35 is hung between upper and lower pulleys 37 and 38, and the upper part of the right clamp transfer body 36 is suspended between the pulley 29 of the lateral transfer mechanism 17 and the lower pulley 39.

The transfer start end 40 of the left clamping transfer body 35 is on the same plane as the delivery end 18, and an intersection 42 for delivery is formed here. The transport bodies 35 and 36 constitute a vertical transport path 41 that holds the seedlings B and sends them to the planting mechanism 9 below.

The lower pulleys 38, 39 of the clamping conveyors 35, 36 are linked to bevel gear transmission mechanisms 43, 44, respectively.
4 is a first wrapped transmission body 45 shown in FIG. 1 and FIG. 2
It is also linked to the soil cover wheel 14 by a second winding transmission body 46.

Here, the driving source of the seedling transfer device 16 is the soil covering ring 14 in this example. Note that the driving source may be an engine or the like as long as it is synchronized with the planting mechanism 9.

As shown in FIG.
2, and a pair of flexible rubber materials, resin materials, etc. attached to the main body shaft 48 facing each other and spaced from each other on the left and right sides. Elastic clamping discs 49 are provided, and on the outside of the circular arc portion extending from the front to the bottom of these clamping discs 49, there is a pressing ring that is freely rotatable around a radial axis centered on the main body shaft 48. A plurality of pressing wheels 50 are provided, and a pressing wheel shaft 51 that rotatably supports each pressing wheel 50 is fixed to an arcuate bracket 52 that is detachably attached to the swing frame 12. And the clamping disc 4
The lower side of the downward transfer mechanism 19 is located near the front of the mechanism 19, and the clamping transfer body 3 of the mechanism 19
The seedling B, which has been transferred downward at steps 5 and 36, is guided in that position between the two clamping discs 49, and is also clamped between the clamping discs 49 brought close to each other by the left and right pressing wheels 50, and then The seedling B is held by the holding disc 49 and transported backward and downward in an arc of approximately 90°, and the holding is released in a vertical position with the roots at the bottom end behind the pressing ring 50 at the lower end. It is made to stand on its own in the planting groove A. Note that the peripheral speed of the clamping disc 49 is approximately the same as or slightly smaller than the transport speed of the seedlings B.

In addition, in FIG. 3, reference numerals 53 and 54 are guide pulleys that prevent the holding and transferring bodies 35 and 36 from swinging.

8 to 10 show a second embodiment of the present invention, in which a pulley 56 is provided on the support shaft 24, and the pulley 56 is
6 and the pulley 29 on the support shaft 25, and the pulley 39 on the right side are wound in a triangular configuration as shown in FIG. The transfer body 32 of the lateral transfer mechanism 17 is suspended from the pulleys 26 and 29 in a triangular manner via a guide pulley 57, as in the first embodiment.

Other basic configurations are the same as the first embodiment,
Common parts are indicated by common symbols.

Next, the effect will be explained.

During the transplanting work, the transplanter 1 is run by the engine 5. Then, the furrower 8 cuts the planting furrow A along the ridge C.
At the same time, the soil covering wheel 14 rolls on the ground to drive the planting mechanism 9 and the seedling transfer device 16, respectively.

In this state, the operator in the driver's seat 15 holds the seedling B on the seedling stand (not shown) on the transfer body 32 of the lateral transfer mechanism 17, which constitutes a lateral transfer path with the front and rear directions as the longitudinal direction and the front side as the leaf. One stock will be placed between 33 joints.

This placed seedling B is placed on the sliding plate 3 in the first embodiment.
4, in the second embodiment, it is transferred as shown by the arrow D in FIGS. 3 and 8 due to the transfer force of the transfer body 36 and the transfer body 32.

When the transferred seedlings B are delivered at the intersection 42 of the downward transfer mechanism 19 at the sending end 18, they come into contact with the transfer body 35 and engage with the engaging portion 33 due to the contact resistance, and the distance between the seedlings B is are set accurately and their postures are controlled to be approximately parallel to each other.

Then, while holding the seedling B between the pair of transport bodies 35 and 36 constituting the vertical transport path 41 of the downward transport mechanism 19, the lower planting mechanism moves as shown by the arrow E in FIGS. 9 and the planting mechanism 9
The plants are made to stand up one after another in the planting groove A with the roots facing downward, and then covered with soil by the soil covering mechanism 10.

Also, depending on the type of crop, field conditions, etc., it may be necessary to change the planting pitch.
The transfer body 32 of the lateral transfer mechanism 17 is connected to the pulley 2
6, 29 and replace it with another transport body 32 with a different interval P.

As described in detail above, according to the present invention, the transfer body of the lateral transfer mechanism has an engaging portion that engages with the root side of the seedling, so that the seedling placed on the seedling is moved to a predetermined position by the engaging portion. The spacing can be adjusted, and since the feed end of the lateral transfer mechanism is provided at the feed end of the downward transfer mechanism, and the transfer start end of the downward transfer mechanism is provided to intersect with each other, there are fewer transfer points for seedlings, and damage to the seedlings can be suppressed accordingly.

Further, since the transfer bodies of the lateral transfer mechanism have engagement portions with different intervals and are wound around the pulleys in a changeable manner, there is an advantage that the transfer pitch can be adjusted to suit the planting pitch.

[Brief explanation of the drawing]

The drawings show an embodiment of the present invention; FIG. 1 is a side view showing the overall structure of the transplanter, FIG. 2 is a schematic plan view, and FIG. 3 is a front view showing the first embodiment of the seedling transfer device. Figure 4 is a front view of the planting mechanism, Figure 5 is a schematic plan view of Figure 3, Figure 6 is a perspective view, and Figure 7 is a schematic plan view of the planting mechanism.
The figure is a detailed view of the connecting part of the transfer body, FIG. 8 is a schematic front view showing the second embodiment of the seedling transfer device, and FIG.
10 is a partial side view of FIG. 8, showing the vicinity of the intersection. DESCRIPTION OF SYMBOLS 1... Transplanter, 9... Planting mechanism, 16... Seedling transfer device, 17... Lateral transfer mechanism, 18... Delivery end, 19
...Downward transfer mechanism, 32...Lateral transfer body, 33
...Engagement portion, 35...Downward transfer body, 40...Downward transfer start end, 42...Intersection part.

Claims (1)

[Scope of utility model registration request] Lateral transfer mechanism 1 that transfers seedlings B while placing them
7, and a downward transfer mechanism 19 that intersects with the delivery end 18 of the lateral transfer mechanism 17 and supplies the transferred seedlings B to the lower planting mechanism 9 while pinching them.
In the transplanter 1, the transfer body 32 of the lateral transfer mechanism 17 is an endless band in which engaging portions 33 capable of engaging with at least the vicinity of the roots of the seedlings B are provided at intervals P in the transfer direction. , a plurality of transfer bodies 32 with different intervals P of engagement portions 33 are connected to pulleys 26 and 29.
A seedling transfer device for a transplanter, characterized in that a transfer starting end 40 of a downward transfer mechanism 19 is provided to intersect with a sending end 18 of a lateral transfer mechanism 17.