JPS647724B2 - - Google Patents

Description

[Detailed description of the invention] [Industrial application field]

The present invention relates to a transplanting machine for sequentially transplanting seedlings grown in a block-shaped nursery bed to a field in blocks, and particularly to a transplanting machine with improved transplanting means.

[Conventional technology]

A transplanter is provided in which each block of seedlings grown in a seedbed formed in a block shape, a so-called soil block, is held by a pair of block holding members from left and right in the direction of movement of the transplanter, and transplanted into a field. Transplantation means are known.

[Problem to be solved by the invention]

The disadvantage of this method is that the seedling block is held from the left and right, which requires a considerable amount of structural space for the equipment in the left and right directions, so in the case of multi-row transplantation, the row width must be made considerably wider. That's true.
Regarding the direction of movement of the transplanter, since there is no member to support the seedling block, the seedling block may tilt forward or backward due to changes in inertial motion given to the seedling block within the locus of movement of the seedling block holding members. However, it has the disadvantage that it is transplanted in the same position.

[Means and actions to solve the problem]

This invention was made based on the above-mentioned circumstances, and a seedling block holding member vertically holds the seedling block from the front and rear directions, and moves the seedling block from the seedling block supply point to the field along a trajectory that circles back and forth and up and down. To provide a transplanting machine that is configured to allow multi-row transplantation with a relatively narrow row spacing, and that is capable of reliably transplanting seedling blocks into a field in a vertical position. This is what I am trying to do.

【Example】

Hereinafter, the present invention will be specifically explained based on illustrated embodiments. In the figure, reference numeral 1 denotes a main body of the transplanter, which is connected via a hitch 3 to a running body 2 such as a walk-behind cultivator. A support arm 4 extending in the left-right direction is provided at the rear of the transplanter main body 1, and a caster shaft 6 with a wheel 5 at the lower end thereof is provided.
is provided. In addition, the lower part of the transplanter main body 1 has a V-shaped tip.
A groove cutting member 7 formed in a shape of a character and a V-shaped leveling member 8 which performs a leveling action before and after the groove cutting member 7 are provided. Further, there is a chain transmission system 9 on one side of the transplanter main body 1, which receives power from the traveling body 2. The chain 9a of the chain transmission system 9 is tensioned by a roller 9c provided on a tension arm 9b and wound around a sprocket wheel 9d, so that power is transmitted to the shaft 9c of the sprocket wheel 9d. ing. A disk 10 is attached to the shaft 9c. The same disk 11 as the disk 10 is connected to the shaft 9e.
It is pivotally supported by the transplanter main body 1 by a floating shaft 12 provided slightly further forward. These disks 10 and 11 each have 90
It has four link arms 13 and 14 extending in the radial direction at an angle of 1.5 degrees, and each link arm 13 and 14 is a link corresponding to the eccentricity of both disks 10 and 11 at a constant length from the center of rotation. It is pivotally connected to a link 15 with a space therebetween. A rear clamping member 17 of a pair of front and rear seedling block clamping members 16 and 17 having pivot points on the upper side is fixed to the link 15, and the clamping member 16 is fixed to the clamping member 17. It is designed to be able to swing back and forth. A cam arm 18 extends from the clamping member 16, and a cam roller 19 is pivotally supported on this cam arm 18. Further, a bolt-type stopper 20 is attached to the clamping member 16 at a position opposite to the clamping member 17, and the degree of approach to the clamping member 17 is regulated. Note that the clamping member 16 is biased by a spring in a direction in which its tip approaches the clamping member 17 and clamps the seedling block. Of course, the clamping force may be obtained by the balancing force of the body's own weight without the aid of the spring force. Plate cams 21 and 22 that guide the cam roller 19 are arranged along the locus of the circumference of the clamping members 16 and 17 in the front and back and up and down directions. The plate cam 21 tilts the tip of the clamping member 16 forward in order to release the seedling block transported to the transplanting position in the field by the clamping members 16 and 17 at that position, releases the clamping, and ascends. The plate cam 22 swings up the tip of the clamping member 16, moves it over the seedlings at the seedling block feeding point, which will be described later, and then lowers the tip from the front side at the end of the cam 22, and then lowers the tip from the front side to hold both sides. The holding members 16 and 17 serve to hold the seedling block from the front and back.
Such movement of the clamping members 16 and 17 is caused by the second
Illustrated in fig. Note that here, since the forward motion of the transplanter is not incorporated, the position of the seedling block in the field must be interpreted as being shifted backward in each section. Further, on one side of the disk 10, an arc-shaped clutch plate 23 made of a material with a high coefficient of friction is provided at a constant interval in the circumferential direction, and a clutch roller 24 in rolling contact with this clutch plate is arranged at a constant interval in the circumferential direction. It is provided on a transmission shaft 25 that is pivotally supported in the front-rear direction of the main body 1. The transmission shaft 25 has a sprocket wheel 2.
6 is provided, and power is transmitted to the seedling supply point via a chain 27. A sprocket wheel 28 that meshes with the chain 27 is provided at the seedling supply station, and this sprocket wheel 28 transmits power to an endless conveyor 29 extending in the left-right direction of the transplanter. The endless conveyor 29 is
In this embodiment, the belt is an endless belt wound between belt wheels. A group of seedling blocks is intermittently carried into the endless conveyor 29 from the seedling box 30 by an appropriate means (not shown).
At the end of the endless transport body 29, that is, at the seedling supply point, the seedling blocks are individually held from the front and back by the holding members 16 and 17 and sent to the transplanting position in the field. In the above embodiment, the clutch plate 23 and the clutch roller 24 are used in order to send the seedling blocks one by one to the seedling supply location by intermittently driving the endless conveyor 29. Of course, other means may also be used. Further, in this embodiment, a plurality of pairs (four pairs) of clamping members in a row are provided for the pair of disks 10 and 11, but it is also possible to prepare multiple pairs of such a configuration and apply it to multi-strip transplantation. It is. In the above embodiment, reference numeral 31 denotes a pair of left and right rubber wheels, which are inclined to each other in an inverted figure-eight shape, and function to collect soil on both sides of the seedling block after transplantation. Next, based on the above embodiment, the clamping member 16
The transplanting work of seedling blocks according to steps 1 and 17 will be explained step by step. During the traveling process of the traveling body 2, when power is transmitted to the chain transmission system 9, the disk 10 is rotationally driven, and the endless conveying body 29, which receives power intermittently through the clutch plate 23 and the clutch roller 24, carries the seedling block. and bring it to the seedling supplying place. This seedling block consists of link arms 13 and 14 that function as parallelogram links, a clamping member 17 that maintains a vertical posture with a link 15, and a cam roller 1 that is biased by a spring toward the clamping member 17.
9 is clamped from the front and back by a clamping member 16 that swings in contact with the plate cams 21 and 22, and maintains a vertical posture along a circular trajectory of front and back and up and down, moving from the front to the bottom while drawing an arc. It is dislocated and implanted into the grooves in the field formed by the groove cutting member 7. In this case, the seedling block receives a certain amount of inertia in the front and rear directions during the travel of the transplanter and transportation by the clamping members 16 and 17, and also undergoes a change in inertia when dislocating along the trajectory, so the balance is maintained. However, since the holding members 16 and 17 hold the seedling block from the front and back, the seedling block can maintain its vertical position without being disturbed until it is planted in the field.

【Effect of the invention】

As described in detail above, the present invention comprises a plurality of pairs of seedling block holding members, which are front and rear pairs whose lower sides can be brought into and out of contact with each other, and are configured to move along a locus that circles back and forth and up and down. At the supply point, the seedling block is held between the front and back by the seedling block holding member, the seedling block is brought to the field while maintaining a vertical posture via the trajectory, and the holding is released at the position to be vertically transplanted. Since a means for opening and closing the seedling block holding member on the trajectory is provided, unlike the conventional method of holding the seedling block from the left and right directions, the structural space in the width direction of the transplanter can be made relatively small. It is advantageous for structural design such as multi-row planting, and even if the seedling blocks try to tilt forward or backward due to changes in inertia during the process of being dislocated, this is prevented because the holding members are in the front and back and in a vertical position. However, it has the excellent effect of being able to be properly implanted in a vertical position at all times.

[Brief explanation of drawings]

Fig. 1 is a perspective view showing one embodiment of the present invention, Fig. 2 is a side view for explaining the operation of the main parts, and Fig. 3
The figure is a front view showing an endless conveyor and its transmission system. 1... Transplant main body, 2... Running body, 10, 11
...Disc, 13,14...Link arm, 1
5... Link, 16, 17... Clamping member, 18...
...Cam arm, 19...Cam roller, 21, 22
...board cam.

Claims (1)

[Scope of Claims] 1. A plurality of sets of front and rear pairs of seedling block holding members whose lower sides can be brought into contact with and separated from each other are configured to move along a locus that revolves around the front and back and up and down, and at a place where seedling blocks are supplied. The seedling block is held between the front and back by the seedling block holding member, and the seedling block is brought to the field while maintaining a vertical posture through the trajectory, and the seedling block is held so as to release the holding at the vertical planting position. A transplanting machine characterized by comprising means for opening and closing the block holding member on the above-mentioned trajectory.