JP4016521B2 - Seedling planting machine - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a mat-like seedling supply device for a seedling transplanter that rolls long mat-like seedlings and supplies them to a seedling tank, and feeds them to a separate planting portion by seedling planting claws while unrolling the rolled seedlings.
[0002]
[Problems to be solved by the invention]
In order to replenish a large amount of seedlings, in a form in which long mat-shaped seedlings are rolled and supplied to the seedling tank and fed to the action part of the seedling nail, the roll seedling diameter decreases as the mat seedlings are fed. Therefore, the release state of the roll wound seedling changes over the seedling taking-out port where the seedling nail is acted, and the mat-like seedling is torn or the seedling density is easily changed.
Also, when the roll seedling support arms that support the roll-shaped mat-like seedlings are adjacent to each other at the upper part of the partition wall of the seedling tank, the difference in the remaining seedling amount of mat seedlings on the narrow partition wall, etc. Regardless of this, it is a problem to eliminate interference between adjacent roll seedling support arms while moving up and down.
[0003]
[Means for Solving the Problems]
The present invention provides a seedling outlet (2) while unrolling the matted seedling (A) accommodated in the seedling tank (1) in a roll form on the reel (33) by the feeding belt (20) of the seedling tank (1 ). In a seedling planting machine that feeds and feeds and separates and transplants with the seedling planting claws (4) of the seedling planting device (3) acting on the seedling outlet (2) , the roll-shaped mat-shaped seedling (A) The roll seedling support arm (29) to be supported is adjacent to the left and right in the upper part of the partition wall (19) of the seedling tank (1), and the roll seedling support arm (29R) on one side of the right and left is placed along the seedling tank (1). The right and left roll seedling support arms (29L) are curved, and the left and right roll seedling support arms (29R, 29L) are differently constructed .
[0004]
【The invention's effect】
The long mat-like seedling A is rolled and supplied to the seedling tank 1 as a rolled seedling. By the operation of the seedling planting claw 3 of the seedling planting device 3, the seedling tank 1 is unrolled and separated from the mat-like seedling A fed to the seedling outlet 2 side and planted on the lower soil surface. To do.
And the roll seedling support arm 29 is made to adjoin right and left in the upper part of the partition wall 19 of the seedling tank 1, and the roll seedling support arm 29R on one side of the right and left is provided along the seedling tank 1, and the roll seedling support arm on the left and right other side is provided. 29L is curved and the left and right roll seedling support arms 29R and 29L are configured differently, so that they move up and down regardless of the difference in the remaining amount of matted seedlings on the narrow partition wall 19. Interference between adjacent roll seedling support arms 29R and 29L can be eliminated .
[0005]
DETAILED DESCRIPTION OF THE INVENTION
The tractor vehicle body 5 includes a front wheel 7 that can be steered by a steering handle 6 and a rear wheel 9 that is disposed at the rear of the cockpit 8. The vehicle can travel by being transmitted through the transmission mechanism, the transmission mechanism in the front mission case 11, the rear wheel transmission shaft 12, and the like.
[0006]
A lift link 13 comprising a parallel link mechanism is provided at the rear part of the vehicle body 4 and is lifted and lowered by a lift cylinder 14 that is expanded and contracted by hydraulic pressure. The seedling planting device 3 is connected to a hitch 15 at the rear end of the lift link 13 so as to be rotatable around a rolling shaft 16.
The seedling planting device 3 includes a float 18 that slides on the soil surface below the seedling planting frame 17 mainly composed of a transmission case connected to the hitch 15 by a rolling shaft 16. A seedling planting claw 4 is disposed at the rear, and a seedling tank 1 having a rearward and downward slope is provided above the seedling planting frame 17.
[0007]
The said seedling tank 1 has the partition wall 19 for every width | variety which can accommodate the mat-shaped seedling A according to the number of planting stripes of multi-row planting, is made into an integral structure over the whole width, and the feeding belt 20 is provided in the bottom part. The lower end portion is brought into sliding contact with the upper surface of the seedling receiving plate 21 in which the seedling outlet 2 is formed, and is guided to reciprocate in the left-right direction.
The seedling planting claw 4 is configured in the form of a double crank mechanism mainly composed of a rotating case 22 that is rotated at the rear portion of the seedling planting frame 17 and a planting case 23 that is rotatably provided at both front and rear ends of the rotating case 22. Then, the seedling planting claws 4 attached to the tip of the planting case 23 by the transmission mechanism in the rotating case 22 and the planting case 23 are planted in an elliptical shape passing through the seedling outlet 2 of the seedling receiving plate 21. The locus line C is drawn and can be operated.
[0008]
The lateral movement of the seedling tank 1, which is each transmission part of the seedling planting device 3, the intermittent feeding drive of the feeding belt 20, the operation of the planting case 23, and the like are performed by using an interlocking shaft or the like from the PTO shaft 24 on the vehicle body 5 side. Interlocked after that.
The seedling tank 1 reciprocates horizontally between the left and right partition walls 19 and moves intermittently while stopping at every fixed lateral movement width. This left-right reciprocating lateral movement is such that the lower edge of the seedling tank 1 moves to the left with respect to the seedling outlet 2 while the seedling outlet 2 at the lower end of each seedling tank 1 is constantly moving. The terminal part is turned back and forth so as to move to the right. Reference numeral 25 denotes a reciprocating lead cam shaft which is interlocked by a transmission mechanism in a transmission case which is the seedling planting frame 17.
[0009]
The outlet 2 of the seedling receiving plate 21 provided facing each seedling tank 1 and the seedling planting claws 4 that operate on the seedling outlet 2 are in a fixed position with respect to the seedling frame 17, and each float The seedling can be planted by moving down to the leveled soil surface at 18.
In the feeding belt 20, the arms 28 at both left and right ends of the belt shaft 27 are positioned at the end of the left and right reciprocal lateral movement of the seedling tank 1 within the rotation range of the arm 26 rotated by the transmission mechanism in the transmission case. Thus, the mat-like seedling A is fed out to the lower seedling take-out outlet 2 side by a certain amount in a configuration driven at a constant angle.
[0010]
The roll-shaped mat-shaped seedling A is grown in the form of a long mat in the same width as the inner width of the seedling tank 1 and significantly longer in the feeding direction, and the mat-shaped seedling A is rolled. This mat-like seedling A is grown using a light and thin material in order to reduce the weight of the mat portion.
In the seedling tank 1, mat-like seedlings grown in a rectangular seedling box can be supplied and fed out by turning the feeding belt 20. The mat-like seedling A can be fed out as a rolled roll seedling.
[0011]
Roll seedling support arms 29 are provided on the partition walls 19 on both sides of the seedling tank 1 so as to be detachable and vertically rotatable by a mounting bracket 30 at the rear end and a mounting pin 31 fitted thereto. Reference numeral 32 denotes a connecting rod for connecting the left and right roll seedling support arms 29.
At the lower end of the roll seedling support arm 29, a guide groove 35 is formed for fitting and guiding the reel shaft 34 of the reel 33 that supports the mat-like seedling A in a roll-wound state. The guide groove 35 is formed to be long in the vertical direction and is inclined so as to move to the front seedling outlet 2 side as it approaches the bottom surface of the seedling tank 1 at the lower end.
[0012]
For this reason, when the roll winding seedling diameter B of the roll-shaped mat-like seedling A is large, the reel shaft 34 is located above the guide groove 35 and increases the distance from the seedling outlet 2. When B becomes smaller as the seedlings are fed out, the reel shaft 34 is moved to the lower part of the guide groove 35 to reduce the distance from the seedling outlet 2.
For this reason, when the roll-shaped mat-like seedling A is fed out on the upper surface of the seedling tank 1, even if the roll-rolled seedling diameter B is reduced, the feeding interval D in the feeding direction in contact with the upper surface of the feeding belt 20 of the seedling tank 1 is set. It is configured to be kept substantially constant.
[0013]
Rolled mat-like seedlings A are supplied to each seedling tank 1. The reel shafts 34 of the reels 33 around which the mat-like seedlings A are wound are fitted into the guide grooves 35 of the left and right roll seedling support arms 29, and the feeding edge of the mat-like seedlings A is set on the lower feeding belt 20. And is pulled out to the seedling receiving plate 21 side.
At the time of the seedling planting operation, when the seedling planting claw 4 passes through the seedling outlet 2 of the seedling receiving plate 21 from above to below along the planting locus line C by the transmission of the seedling planting device 3, this seedling outlet 2 The mat-like seedling A fed out is separated and planted on the lower soil surface. When the mat-like seedling A is separated by the seedling planting claws 4 at the seedling taking-out port 2, the next seedling separating action is performed by the intermittent lateral movement of the seedling tank 1.
[0014]
In this way, when the seedling tank 1 reaches the lateral end, the feeding belt 20 is intermittently rotated to feed the mat-like seedling A by the amount of separation by the seedling-growing nails 4, and the feeding edge of the mat-like seedling A Is brought into contact with the front end face of the seedling receiving plate 21 and positioned on the upper surface of the seedling outlet 2. Subsequently, the seedling tank 1 is turned back, and the seedling separating action by the seedling planting claws 4 is performed at the seedling outlet 2.
[0015]
As the mat-like seedling A is fed out, the reel shaft 34, which is the center of the roll wound seedling, is rotated in the guide groove 35, and the roll wound seedling diameter B is gradually reduced to the guide groove 35. Move down along. For this reason, the feeding interval D of the mat-like seedlings A supported in contact with the upper surface of the feeding belt 20 when the roll winding seedling diameter B is large and small is maintained substantially constant.
[0016]
In FIG. 4, the difference from the above example is that the configuration of the roll seedling support arm 29 that supports the roll-wrapped mat-like seedling A is different in the shape of the vertical curve at the upper part of the partition wall 19 of the seedling tank 1 adjacent to the left and right phases. by the configuration, regardless of the different like the feeding Naezan amount of the mat Jonae a on narrow partition wall 19, which eliminates interference between mutually adjacent rolls seedlings supporting arms 29L and 29R to move up and down It is.
[0017]
While the roll seedling support arm 29R on either one of the left and right sides is substantially parallel to the surface of the seedling tank 1, the other side roll seedling support arm 29L is greatly curved upward, A large upper and lower step is provided between the two.
In FIG. 5, the difference from the above example is that the top surface of the mat-like seedling A is held between the feeding belt 20 and the front end of the feeding belt 20 of the seedling tank 1. A feeding disk 36 for feeding the mat-like seedling A to the seedling receiving plate 21 side is arranged. The right and left deflection of the mat-like seedling A can be reduced, and the mat-like seedling A can be fixed to the seedling tank 1 so that seedling separation by the seedling planting claws 4 can be performed accurately.
[0018]
The feeding disks 36 are arranged at regular intervals along a horizontal disk shaft 38 that is pivotally supported by a bearing metal 37 on the partition wall 19 of the seedling tank 1. The disk shaft 38 is intermittently rotated in conjunction with the feeding belt 20. Each of the feeding disks 36 is made of a synthetic resin material, and is mounted so as to idle with a torque of a certain level or more around the disk shaft 38.
[0019]
The mat-like seedling A fed out from the seedling tank 1 is held between the upper feeding disk 36 and the lower feeding belt 20 and is fed out by these synchronous intermittent driving and slid toward the seedling receiving plate 21 side. Make contact. If a certain load is applied to any of the feeding disks 36 during feeding, the feeding disk 36 that is overloaded does not rotate even if the disk shaft 38 is driven.
[0020]
In this way, the mat-like seedling A is fed out in a state of being held from the upper and lower surfaces over the entire width. Prevents movement of A and eliminates deflection and tearing. Further, even if an error occurs in the feeding drive amount between the feeding belt 20 and the feeding disk 36, the feeding disk 36 is not driven more than necessary when the overload is applied. Can be suppressed.
[Brief description of the drawings]
FIG. 1 is a perspective view and a side view of a seedling tank section.
FIG. 2 is an exploded perspective view and a plan view of a part thereof.
FIG. 3 is a side view of a seedling planting machine.
FIG. 4 is a perspective view of a seedling tank portion showing an embodiment according to the present invention, and a plan view and a side view of a part thereof.
FIG. 5 is a plan view and a side view of a seedling tank portion showing a partially different embodiment.
[Explanation of symbols]
1 Seedling tank 2 Seedling outlet 3 Seedling device 4 Seedling nail
19 Partition wall
20 Feeding belt
33 reel
29, 29R, 29L Roll seedling support arm A Mat-shaped seedling B Roll wound seedling diameter

Claims (1)

With the feeding belt (20) of the seedling tank (1), the reel (33) is wound into a roll, and the matted seedling (A) accommodated in the seedling tank (1) is unwound and fed to the seedling outlet (2) . In the seedling planting machine for separating and planting with the seedling planting claws (4) of the seedling planting device (3) acting on the seedling outlet (2) , the roll seedling supporting the roll-shaped mat-shaped seedling (A) The support arm (29) is adjacent to the left and right in the upper part of the partition wall (19) of the seedling tank (1), and the right and left roll seedling support arms (29R) are provided along the seedling tank (1). A seedling transplanting machine in which the roll seedling support arms (29L) on the side are curved and the left and right roll seedling support arms (29R, 29L) are configured differently .

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