JP2659297B2 - Multi-row seedling transplanter - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a multi-row seedling transplanter for rushes, that is, an intermittent horizontal feed mechanism for temporarily stopping the horizontal feed movement of a seedling mounting table when a seedling is taken out by a planting mechanism. The present invention relates to a technique for reducing the load torque, which suddenly increases when a plurality of planting claws operate collectively, to reduce the capacity of a safety clutch. The present invention is applicable to a rice transplanter for rice and wheat.

[0002]

2. Description of the Related Art Normally, the traveling direction of a harvester when harvesting stem culms is along the traveling direction of the seedling transplanting operation by a seedling transplanter. In some cases, the harvester travels in the direction perpendicular to the work travel direction to perform harvesting in the horizontal direction. It is intended to be transplanted. Also, when transplanting seedlings without root soil such as rush (washing seedlings), the seedlings are likely to shift and move. Has an intermittent function of temporarily stopping the lateral feed when the seedlings are taken out.

[0003]

That is, a plurality of planting mechanisms arranged in parallel in the left-right direction are all driven at the same phase and cycle, and are configured to transplant a plurality of seedlings at exactly the same time. I have. Therefore, the seedling removal operation timing by the planting claw in each stop process during the intermittent traverse operation is simultaneously performed in a plurality of sections, and the load torque of the planting mechanism temporarily increases significantly. As a result, the maximum load torque is reduced. The capacity of the safety clutch set according to the value is large and large compared to the normal load torque other than the maximum value that occupies most of the safety clutch, which increases the cost and causes the sudden increase in the load torque. It also caused vibration and hiccups of the planting mechanism. An object of the present invention is to solve the above-mentioned disadvantages.
The purpose is to reduce the maximum load torque value during the seedling collecting operation.

[0004]

In order to achieve the above object, according to the present invention, in a seedling transplanter for a plurality of rows, a plurality of planting mechanisms are arranged in parallel in the left-right direction, and seedling removal by each planting mechanism. Sometimes an intermittent traversing mechanism for temporarily stopping the traversing movement of the seedling mounting table is provided. In this intermittent traversing mechanism, during the time of each stop process during the intermittent traversing operation, the planting claw of each planting mechanism is set. The phase in the seedling removal moving direction of each planted claw passing through each seedling removal opening of the seedling mounting stand is such that each of them can take out the seedlings from the seedling mounting base with the seedling removal operation timing shifted. They were displaced from each other.

[0005]

[Function] In other words, by slightly shifting the seedling taking-out operation timing by a plurality of planting mechanisms arranged in parallel in the left-right direction, the increasing timing of the load torque when the planting claw takes out the seedling from the seedling mounting base is dispersed. Therefore, the maximum value is suppressed. According to the characteristic configuration based on this idea, the load torque increase time itself is longer than that of the related art in which the load torque increase time completely overlaps in all of the plurality of sections, The maximum load torque value can be reduced by reducing the number of overlaps by shifting the timing at which the load torque of the planting mechanism increases. Therefore, vibrations caused by a sudden increase in load torque and hiccups of the planting mechanism can be reduced, and the set allowable capacity of the safety clutch can be reduced, so that its size and cost can be reduced. Since the operation of removing the seedlings by the planting claws of each planting mechanism is shifted within the time of each stop process during the intermittent transverse feed operation, the plants located on the left and right of the seedlings planted in the field Can be minimized from the complete parallel state, so that the above-described lateral cutting does not hinder the harvesting operation, and each of the seedling platforms during the intermittent lateral feeding operation is not operated. It is possible to maintain the basic operation state in which the seedling removal operation is performed during the stop process.

[0006]

Therefore, the operation of picking up the seedlings by the plurality of planting mechanisms arranged in parallel in the left-right direction is relatively controlled within the time of each stop process during the intermittent traversing operation of the seedling table by the intermittent traversing mechanism. By simple and economical remodeling means corresponding to the level of adjustment of the machine to be displaced, it was possible to reduce vibration and hiccups associated with the transplantation operation and to reduce the size of the safety clutch.

[0007]

An embodiment in which the present invention is applied to a rush seedling transplanter will be described below with reference to the drawings. FIG. 5 shows the entire side surface of the rush seedling transplanter, and FIG. 1 shows the planting portion of the rush seedling transplanter. The rush seedling transplanter is connected to a rear portion of the traveling machine 16 via a link mechanism 17. The seedling placement device 2 for the sixth row is configured to be connected to the seedling placement device 2 so as to be movable up and down. A planting mechanism 6 for cutting and planting seedlings one by one from a seedling outlet 5 at the lower end of the mounting table 4 and planting the seedlings, a plurality of leveling floats 7 and the like are provided. At the bottom of the seedling mount 4,
An endless rotating belt type vertical feeding device 8 with a projection that feeds a set amount of seedlings vertically toward the seedling removal port 5 by a predetermined amount at the stroke end of the horizontal feeding by the horizontal feeding mechanism A is provided. Above the seedling, a seedling holding mechanism 11 is provided by an auxiliary nail 10 which enters the lower end of the seedling prior to the operation of the planting nail 9 and pushes out and holds it toward the seedling outlet 5. The planting mechanism 6 includes a planting claw 9, a planting arm 12, a seedling pusher 13, and the like. The drive shaft is provided at both left and right lateral positions of each of the planting cases 3 arranged in three rows in the left-right direction. 1 in a state where power is transmitted. Lateral feed mechanism A
Is configured as an intermittent lateral feed mechanism that temporarily stops the lateral feed movement of the seedling placing table 4 when the seedlings are taken out by the seedling planting mechanism 6. That is, as shown in FIGS. 2 and 4, the driving force is gear-linked to the first transmission shaft 15 from the second transmission shaft 14 that is chain-driven to the drive shaft 1 in the planting case 3. The power of No. 15 is transmitted to the helical shaft 18 via the intermittent gear mechanism B. The lateral feed shaft 19 is slidably supported on the planting case 3 from side to side.
The left and right ends of 9 are connected to the back surface of the seedling mounting table 4, and an engaging member 20 fixed in the middle of the transverse feed shaft 19 is engaged in an endless spiral groove 21 of the spiral shaft 18. The intermittent gear mechanism B includes a partial gear tooth 22a and a convex cam 22.
b, and a drive gear 22 on the first transmission shaft side provided with the first transmission shaft b, and a passive gear 23 on the helical shaft side provided with the concave cam 23a.
Number of partial gear teeth 22a and gear teeth 23b of passive gear 23
The number of teeth is matched. Thereby, the passive gear 23
A state in which the motor rotates once and a state in which it stops at the set phase appear alternately, and the spiral shaft 18 is intermittently driven to rotate. As shown in FIGS. 1 and 3, among the six planting mechanisms 6, the central two planting mechanisms 6 are used for the remaining four left and right planting mechanisms 6 to take out seedlings. Each of the planting claws 9 of the planting mechanism 6 for the central two rows and each of the planting claws 9 of the planting mechanism 6 for the remaining left and right four rows so that the seedlings are taken out of the seedling mounting table 4 in a shifted state. Each seedling take-out opening 5 of seedling mounting table 4
Are shifted from each other by 20 degrees as the rotation angle around the drive shaft 1 in the moving direction of the seedling removal when passing through. The time during which the lateral feed by the lateral feed mechanism A stops at the time of the seedling removal operation during the intermittent lateral feed operation is in a range corresponding to a rotation angle around the drive shaft 1 of 130 to 140 degrees. Within the time of each stop process during the intermittent lateral feed operation by the feed mechanism A, the shift of the seedling taking-out operation time of each planting mechanism 6, that is, the operation time at which each planting claw 9 rushes into the seedling appears. Is set to still,
It may be set such that all the planting claws 9 for six rows are shifted little by little, or three rows are shifted.

[0008] As shown in FIG.
Folded surfaces 26, 26 are formed at the upper end portions of the plurality of insertion holes 27, 26 respectively.
And a locking tool 28 formed of a bent round bar that can be locked by being inserted into the left and right insertion holes 27.
When the mounted seedlings are less than full, the locking fixture 28 is replaced so that the seedlings can be handled as fall prevention metal fittings so as not to fall.

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 the drawings]

FIG. 1 is a side view of a planting device part.

FIG. 2 is a transmission system diagram showing the structure of a lateral feed mechanism.

FIG. 3 is a rear view of the planting device part.

FIG. 4 is a side view showing an intermittent gear mechanism.

FIG. 5 is a side view of a seedling transplanter.

FIG. 6 is a perspective view of a seedling box.

[Explanation of symbols]

 4 Seedling stand 5 Seedling outlet 6 Planting mechanism 9 Planting claw A Intermittent lateral feed mechanism

Claims (1)

(57) [Claims] 1. A plurality of planting mechanisms (6) are arranged side by side in the left-right direction.
Deploy and take out seedlings by each planting mechanism (6)
Sometimes the lateral feed movement of the seedling stage (4) is temporarily stopped.
Intermittent transverse feed mechanism (A).
In (A), within the time of each stop process during intermittent traverse operation,
Each of the planting claws (9) of each planting mechanism (6)
The seedling stage (4) may be
Of the seedling platform (4) to such an extent that
Seedling of each planted nail (9) passing through each seedling outlet (5)
A seedling transplanter for multiple lines in which the phases in the extending movement direction are shifted from each other .