JPH0767336B2 - Left and right offset load adjustment device for seedling table in riding rice transplanter - Google Patents

Description

Description: [Industrial application] The present invention relates to a lateral offset load adjusting device for a seedling table in a riding rice transplanter in which a traveling machine body is provided with a planting portion that can tilt left and right.

[Problems to be Solved by Prior Art and Invention] Generally, in this type of riding rice transplanter, a planting portion provided on a traveling machine body is fixed to a rice field regardless of a lateral inclination of the traveling machine body. In order to maintain the above, it is provided so as to be able to tilt left and right (rolling) with respect to the traveling machine body. And in this case, an unbalanced load generated by the left-right reciprocating movement of the seedling mounting table accompanying the planting, a rolling ammunition is provided between the planting part main body side and the traveling machine body side, and the pulling force of the rolling ammo is set. It is designed to be offset by pulling the planting part on the side that has moved.

However, conventionally, this rolling ammunition is stretched between the main body of the planting part and the member on the side of the traveling body, and the tension accumulated when the planting part tilts left and right relative to the traveling body. It works to correct this with force,
Moreover, this pulling force was set so that the seedling placing table that reached the moving end would be in a slightly lowered state without placing the planted seedlings on it, so that the unbalanced load would be large. However, there is a problem in that it cannot function sufficiently at all times, and the moving side inevitably falls down. This problem can be compensated to some extent by the ground contact pressure that the float receives from the paddy field when the field is touching the field, but in the case of a soft field or when the traveling machine tilts left and right due to the unevenness of the tiller. If the left and right inclination of the planting part relative to the traveling aircraft is canceled out, the left and right inclination of the planting part due to the rolling ammunition cannot be recovered and the planting posture is disturbed. Becomes

Recently, a seedling table has been developed that is long in the front-back direction so that a large number of planted seedlings can be placed in the sliding direction. The eccentric load generated when reaching the moving end becomes even larger,
For this reason, even in a fairly hard field, the unbalanced load when the seedlings are fully loaded cannot be offset by the contact pressure received by the float, and as a result, the planting section tilts following the lateral movement of the seedling mounting table and balances left and right. However, there is a problem that the planting work does not occur at a uniform depth, which causes a problem.

[Means for Solving the Problem] The present invention was devised for the purpose of providing a left-right biased load adjusting device for a seedling table in a riding rice transplanter that can eliminate these drawbacks in view of the above-mentioned circumstances. In the support member that can be lifted up and down on the traveling machine body,
In a riding rice transplanter in which a planting section in which a seedling placing table is provided so as to be capable of reciprocating left and right is tiltably supported left and right, between the seedling placing side member and the supporting member that reciprocate left and right, a seedling placing table Adjusting ammunition is stretched to the left and right respectively so as to cancel the unbalanced load generated by the left and right movement by pulling the seedling mounting table on the moved side, and the tensile force of each adjusting ammunition is applied to the side that reaches the moving end. The seedling mounting table is set to have a spring force that lowers when the planted seedlings are fully loaded with respect to the horizontal state but rises when the seedlings are not placed.

Further, according to the present invention, the posture of the planting part when the seedling placing table reaches the moving end can be averaged when the seedling is fully loaded and when the seedling is not placed.

[Embodiment] Next, an embodiment of the present invention will be described with reference to the drawings. In the drawings, reference numeral 1 denotes a traveling machine body of a riding type rice transplanter, and a support member 4 is attached to a rear side of the traveling machine body 1 via a link mechanism composed of a top link 2 and a lower link 2a so as to be vertically movable. A center pin 5a on the side of the planting portion 5 is rotatably supported by a lower portion of the support member 4, whereby the planting portion 5 can be tilted in the left-right direction. The planting section 5 is composed of various members such as a transmission case 6, a front and rear low-shaped seedling stand 7 that reciprocates left and right, a planting claw 8, a float 9 and the like. Although it is the same as the conventional one, the seedling placing table 7 adopts a seedling placing table system in which two and a half seedlings can be placed in the sliding direction of the seedling and is long in the front-rear direction.

Reference numeral 10 denotes a lateral stay integrally provided on the front portion of the transmission case 6 via a bracket 10a.
The outer ends of the pair of left and right rolling bullets 11 are respectively locked, but the inner ends of the rolling bullets 11 are engaged with the base ends of the substantially U-shaped vertical stays 12 extending from the support member 4. It is stopped, and the tensile force of the center pin of the entire planting part
By balancing around 5a, the planting section 5 is controlled to roll more than necessary.

On the other hand, on the upper end of the vertical stay 12, a pair of left and right balance ammunition
The inner ends of 13 are locked, but the outer ends of the balance ammunition 13 are locked to the left and right ends of the horizontal stay 14, which is a member provided on the seedling stand 7. . When the seedling stand 7 moves back and forth during the planting work,
In accordance with the amount of movement, the balance ammunition 13 on the moved side expands (the other side contracts) and its tensile force increases, and this acts as a force for lifting the seedling stand 7 upward in the center. It is becoming like this. The balance ammunition machine 13 constitutes the adjusting ammunition machine of the present invention, and the lifting force, that is, the pulling force, cancels the unbalanced load generated by the left-right reciprocating movement of the seedling placing table 7. It has become.

The tensile force of the balance ammunition 13 is set as follows. That is, the pulling force of the balance ammunition 13 is such that, in a state where the seedling placing table 7 reaches either the left or right moving end, the seedling placing table 7 on the moved side is in a descending state in the seedling full state,
It is set so that it goes up in the unloaded state,
It is configured so that it is in a substantially horizontal state when the seedlings are placed on about a half.

In the embodiment of the present invention configured as described above, the rice transplanter scrapes the seedlings to be planted as a unit from the seedling mounting table 7 by the planting work of the planting claws 8 in timing with the traveling speed of the machine. However, in this case, even if the placement amount of the planted seedlings on the seedling placing table 7 changes from the full load state to the non-loading state, the planting section 5 remains substantially constant. The planting posture will be maintained in a horizontal state.

That is, in the embodiment of the present invention, the balance ammunition machine 13 on the moving side is expanded and stored in the process in which the seedling stand 7 reaches either the left or right moving end, and this storing force is , The tensile force is used to offset the unbalanced load caused by the movement of the seedling placing table 7. This tensile force rises on the moving end side when the planted seedlings are not placed, and when the seedlings are fully loaded. Is set so that the moving end side descends. Therefore, when the seedling placing table 7 reaches the moving end, the inclination amount due to the unbalanced load of the seedling placing table 7 in the consumption process of the planted seedlings from the time when the seedlings are fully loaded to the state where the seedlings are not placed is , It will be averaged up and down by going through the horizontal posture state in the middle,
This means that the amount of lowering from the horizontal state when the seedlings are full is reduced by the amount that the moving end side is raised when there is no loading, and conversely, when the moving end side is lowered when the seedlings are full. Therefore, the amount of rise from the horizontal state when not mounted is reduced.

Therefore, as in the case where the rolling ammunition 11 stretched between the traveling machine body 1 and the main body of the planting section is used to balance the lateral tilting of the planting section 5, the field is weak or the traveling machine body is In the case where 1 is inclined left and right due to the unevenness of the tiller and the relative left and right inclination of the planting portion 5 with respect to the traveling machine body 1 is offset, and the return function by the rolling ammunition 11 cannot be effectively exhibited, The balance ammunition machine 13 effectively functions as a pulling force in a direction in which the moving side of the seedling mounting table 7 is stored along with the lateral movement of the seedling mounting table 7 and the uneven load of the seedling mounting table 7 is corrected. Since the pulling force and the seedling table that has reached the moving end are set to rise when the seedlings are not placed and to decrease when the seedlings are fully loaded, when the seedlings are fully loaded, the moving end side greatly descends from the horizontal state. The ground pressure that the float receives Go-between, such that you can also avoid things like exceeds the range of, though soft field and the traveling machine body 1
Even if the plant is tilted to the left or right, the unbalanced load caused by the lateral movement of the seedling stand 7 is offset without being significantly affected by the placement amount of the planted seedlings, and the planting section 5 is planted on the rice field. The posture can be improved and the planting performance can be improved.

Of course, the present invention is not limited to the above-mentioned embodiment, and as shown in FIG.
Instead of being provided in the downward expanding shape as in the above-mentioned embodiment, it may be arranged in the upward expanding shape, and further, it may be provided in a substantially horizontal shape. (Adjustment ammunition machine) does not depend on the tensioning method as long as it is tensioned between the support member on the traveling body side and the seedling table side member that reciprocates left and right. Even if it is one, the same operation as that of the above-mentioned embodiment is achieved. And in any of these cases, it is not always necessary to set the planted seedlings so that the seedling mounting table becomes horizontal with a consumption amount of exactly half, and the present invention can be carried out even if it is deviated to one side. .

[Advantageous effects] In short, since the present invention is configured as described above, an unbalanced load caused by the lateral movement of the seedling table is stretched over the moving seedling table side member itself. The tensile force of the adjusted ammunition that has been set will be offset, but the tensile force of the adjusted ammunition will descend when the seedling table on the side that reaches the moving end is full of planted seedlings and is not placed. Then it is set to rise.

As a result, the rolling ammunition is stretched between the traveling machine body and the planting section main body side by offsetting the relative lateral inclination of the planting section with respect to the traveling machine body in a soft field. Even when the posture returning function due to can not be exerted effectively, the adjustment ammunition on the moved side is stored with the lateral movement of the seedling mounting table, and pulling in the direction to cancel the unbalanced load of the seedling mounting table. It works effectively as a force, and this pulling force is set so that the seedling mounting table that reaches the moving end is set to rise when seedlings are not placed and descends when seedlings are fully loaded. In this case, it is possible to avoid that the moving end side greatly descends from the horizontal state and exceeds the range of the correction action due to the ground contact pressure received by the float. In some cases In addition, it is possible to improve the planting performance by offsetting the unbalanced load that accompanies the lateral movement of the seedling platform regardless of the amount of planted seedlings and improving the planting posture of the planting part with respect to the rice field. Become.

[Brief description of drawings]

The drawings show an embodiment of a left-right eccentric load adjusting device for a seedling placing table in a riding rice transplanter according to the present invention. Fig. 1 is a rear side view of the riding rice transplanting machine, and Fig. 2 is a seedling placing table. 3 is an enlarged side view of the planting part, FIG. 4 is an explanatory view of the action, and FIG. 5 is a rear view of a seedling mount part showing another example. In the figure, 1 is a running machine, 5 is a planting section, 7 is a seedling stand, and 13 is a balance ammunition.

Claims (1)

[Claims] 1. A riding rice transplanter in which a planting portion in which a seedling stand is reciprocally movable left and right is supported by a support member that is vertically movable on a traveling body so that the planting portion can be tilted left and right. Adjusting ammunition is stretched between the left and right sides of the seedling table side member and the support member so as to cancel the unbalanced load generated by the lateral movement of the seedling table by pulling the seedling table on the moved side. , The tension force of each adjusting ammunition is set to a spring force in which the seedling mounting table on the side reaching the moving end descends in the full state of the planted seedlings with respect to the horizontal state but rises in the unloaded state. A lateral offset load adjusting device for a seedling stand in a riding rice transplanter.