JP2532036B2 - Seedling guide for rotary planting equipment - Google Patents

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a seedling guide in a rotary planting device.

[0002]

2. Description of the Related Art A forced extrusion type planting arm that makes one revolution in the direction opposite to the rotation direction of the rotary case in which the planetary gear mechanism is installed by utilizing an eccentric gear during one revolution of the rotary case. 2. Description of the Related Art A planting device in which the bases of (1) and (2) are provided in front of and behind a rotary case has been conventionally known.

[0003]

The vertical acceleration of the forced extrusion type planting arm of the rotary planting device as described above changes and decelerates during the transfer of seedlings as shown in FIG. Also, backlash caused by the eccentric gear is maximized near this point. For this reason, rotation fluctuation occurs, and in the forced extrusion type planting arm, the seedlings are easily separated from the planting claw. If this happens, stable planting will not be possible and at worst, floating seedlings will result.

[0004]

SUMMARY OF THE INVENTION Therefore, a technical object of the present invention is to obtain a seedling guide in a rotary planting device having a forced extrusion type planting arm in a rotary planting device capable of stable planting. However, the technical means of the present invention for solving this technical problem is to reverse the rotation direction via the planetary gear mechanism during one rotation of the rotary case in which the planetary gear mechanism utilizing the eccentric gear is installed. In the rotary planting device in which the bases of the forced extruding type planting arms are provided in front of and behind the rotary case so as to make one rotation, one planting arm corresponds to the start of pulling up the push rod. For other planting arms in the middle of transportation, seedling guides are provided on the left and right along the inside of the movement trajectory at the seedling take-out port of the seedling stand, and
In the seedling guide, the vertical acceleration of the planting arm is decelerated, and the seedling guide is extended further downward from the position past the foremost part of the lobe of the planting claw where rotation fluctuation is likely to occur and the seedling guide is planted from the seedling take-out port. It is a seedling guide in a rotary planting device, characterized in that it is vertically elongated so as to retract from the locus of movement of the arm.

[0005]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS The embodiments shown in the drawings will be described below.
First, the rotary planting device will be described. The transmission shaft shown in FIG. 4, that is, the input shaft (1) is rotatable with respect to the planted transmission case (2). A sun gear (3) is loosely fitted on the transmission shaft (1). However, it is fixed to the planting transmission case (2) via the sun gear phase adjusting member (4). This changes the relative position of the sun gear (3) with respect to the planted transmission case (2). At the end of the transmission shaft (1), a hollow split rotary case (5) is mounted on the transmission shaft (1) by adjusting the position in relation to the upper stop device of the planting pawl. The rotary case (5) is attached and the transmission shaft (1) is attached by bolts (6).
It is fixed to. In a rotary case (5) as a rotating body, intermediate gears (7) (7) meshing with the sun gear (3) and having the same number of teeth as the sun gear (3) rotate via an intermediate shaft (8). The planetary gear (9) is provided freely and has the same number of teeth as the sun gear (3), which always meshes with the intermediate gear (7) on the intermediate shaft (8), on the camshaft (9) as a planting shaft. 10) is fitted via a support member described later.
These sun gear (3), intermediate gear (7), planetary gear (1
Reference numeral 0) denotes a gear that is appropriately eccentric (e) from the center of rotation as shown in FIG. The cam shaft (9) also has a position adjusting member (1
It is attached to the rotary case (5) via 1). Further, the support member (12) is fitted on the cam shaft (9),
The planting arm (13) and the planetary gear (10) are fixed to the support member (12). By adjusting the position adjusting member (11) as described above, the extrusion timing of the extrusion claw is changed. The cam shaft (9) is provided with a cam described later.

Now, when the rotary case (5) as a rotating body rotates in the direction of arrow A as shown in FIG. 6 by the transmission shaft (1) which is its rotating shaft, it cannot rotate with respect to the planting arm (13). The intermediate gear (7) meshing with the sun gear (3) rotates in the direction of arrow B by the same rotation angle as the rotation angle of the rotation of the rotary case (5). The planting claw case supporting member (12) which is interlocked with the intermediate gear (7) through the planetary gear (10) has a rotation direction of the intermediate gear (7) in the direction of arrow C, that is, the rotary case (5).
Since it rotates in the direction opposite to the direction of rotation, the planting arm (13)
Will rotate around the drive shaft (1) in a posture facing the seedling mounting table, and when the side facing the seedling mounting table descends from top to bottom during this rotating motion, the planting After splitting only one seedling from the seedling mat on the seedling mounting table at the tip of the attached nail, it is planted in the field scene at the lower limit of its descending, after which it rises from the field scene and the extruded nails are planted at the time of planting. Since the seedlings are extruded, the seedlings leave the planting claws. As shown in FIG. 6, the sun gear (3), the intermediate gear (7), the planetary gear (1
Since all of 0) are configured as eccentric gears that are eccentric by the amount e, the supporting member (12) revolves as the rotary case (5) rotates in the direction of arrow A, and the supporting member (1) accompanying it revolves.
2) The rotation of itself in the C direction is due to the difference in meshing pitch radius with respect to the rotating shaft center in the meshing of the eccentric gears (3), (7), (7), (10) and (10) during one rotation of the rotary case ( It is configured to be faster or slower than the rotation speed of 5).

Therefore, the time when the rotation of the planting claw case (13) in the direction C is delayed relative to the rotation of the rotary case (5) so that the planting arm (13) approaches the field scene from the seedling picking position. The time when the planting arm (13) rapidly rotates in the direction C corresponds to the time when the planting arm (13) rises from the planting position so as to approach the upper limit of the rise of the planting arm (13). By setting each planting arm (1
3) is slower in the direction C than the revolution of the rotary case (5) when descending so as to approach the field scene, and changes its posture downward by the revolution while freely rotating on its own, and when approaching the upper limit of the rise after planting, the rotary Since it moves in the direction C more than the revolution of the case (5) and automatically rotates to change its posture upward, the closed loop of the movement locus of the claw tip is curved by one side and the other side is closer to a straight line as shown in FIG. It is an elliptical closed loop curve of the deformation of. The forced extrusion type planting arm in the rotary planting device as described above has a cam lever (15) which swings around the shaft (15a) by the cam (14) of the cam shaft (9) as shown in FIG. The push rod (17) can be moved back and forth via the link (16). The spring (18) biases the push rod (17) forward, and the push-out claw (19) is attached to the tip of the push rod (17). (20) is a fixed claw.

By the way, in the rotary forced extrusion type planting arm, since the push rod (17) is pushed out and then pulled up against the force of the spring (18), a load is applied, which causes a fluctuation in rotation. There is. On the other hand, as indicated by E in FIG. 3, the acceleration of the planting arm in the vertical direction changes during the seedling transfer and is decelerated. In the vicinity of this deceleration, the backlash caused by the eccentric gear is maximized, which causes rotation fluctuations, which has a drawback that the planting posture is disturbed along with the rotation fluctuations caused by the push rod being pulled up. Therefore, in the present invention, seedling guides are provided on the left and right along the inner side of the movement locus of one planting arm during conveyance of the seedlings, and the seedling guide retracts from the movement locus of the planting arm from the seedling take-out port. Thus, it was formed vertically long along the foremost part of the lobe of the planting nail. FIG.
Inside, (22) is a seedling mounting table, and seedling guides (21) and (21) are provided on both sides of the seedling inlet (23) in the vertical direction. D shows the lobe of the planting claw, and the locus of the planting claw is the frontmost side (seedling table side).
The vicinity of point E, which is the same as that shown in FIG. 3, is a place where rotation fluctuation is likely to occur. Therefore, in the illustrated example, the seedling guide is extended further downward from the position past the foremost part of the planting claw trajectory, and the space 1 is configured so that the tip of the seedling guide does not contact the paddy field even at the deepest planting.

FIG. 1 shows one planting arm (13) after planting seedlings.
It shows that the push rod (17) is being pulled up.
The other planting arm (13) during seedling transfer is in the seedling guide (21). In FIG. 2, if the push cam rotation direction is F when the push lever is fixed, the pull start of the push rod is g. Then, the pulling-up operation is performed between (g to h) of the cam. The other planting arm (13) during the transfer of the seedlings between the cams (gh) is in the seedling guide (21). Since the seedling guides (24) and (24) are extended further downward from the position past the foremost part of the planting claw locus and are formed vertically long, the rotation fluctuation of the planting arm and the lifting of the push rod are performed. The planting posture can be prevented from being disturbed due to the fluctuation of rotation due to, and stable planting can be performed. The seedling guides are provided on the left and right inside the planting locus, and the seedling guides are set so as to retract from the locus of movement of the planting arm from the seedling take-out port. The seedlings are reliably gripped at the take-out port, and the gripped seedlings are not damaged by the seedling guide during seedling transport, and the seedlings are planted reliably.

[0010]

According to this technical means, the seedling guide is extended further downward from the position past the foremost part of the lobe of the planting claw, where the vertical acceleration of the planting arm is decelerated and the rotation fluctuation is likely to occur. However, because it is formed vertically long, even if the direction of the planting arm changes and there is fluctuation in rotation, or even if there is fluctuation in rotation due to pulling up of the push rod, the planting arm during seedling transfer is in the seedling guide. Stable seedlings can be delivered,
Therefore, the seedlings are not separated from the planting claws and the planting posture is not disturbed, so that stable planting can be performed. In other words, the direction of the planting arm during seedling transfer changes, so a deceleration state occurs, and during this deceleration state, backlash due to the eccentric gear causes maximum backlash, which causes rotation fluctuations. You can make sure that there is no disturbance. In addition, it takes a load to pull up the push rod against the force of the spring, and even if this causes a rotation fluctuation, it affects the planting arm that is in the middle of transportation and disturbs the planting posture. You can make sure that the guide does not disturb you. However, the seedling guides are provided on the left and right along the inside of the moving path, and the seedling guides are set so as to retract from the moving path of the planting arm from the seedling take-out port. The seedlings that have been planted are securely gripped by being covered by the guides, the gripping posture is not disturbed, and the seedling guides recede from the movement path as the planting claws move away from the seedling take-out port. The seedlings gripped in step 1 are gradually separated from the seedling guide, and are reliably planted without being damaged by the seedling guide during transportation.

[Brief description of drawings]

FIG. 1 is a front view showing the device of the present invention.

[Fig.2] Operation diagram of cam and plan view of seedling guide

[Fig.3] Vertical acceleration diagram of planted arm

FIG. 4 is a cut front view of a rotary planting device having a forced extrusion type planting arm.

FIG. 5 is a side view of the same partial cutaway.

FIG. 6 is an explanatory diagram showing a locus with planting.

[Explanation of symbols]

 10 Rotary case 13 Planting arm 14 Cam 15 Cam lever 17 Push rod 19 Push-out claw 20 Fixed claw 21 Seedling guide

Claims (1)

(57) [Claims] 1. A forced extrusion type planting arm of a rotary case in which a planetary gear mechanism using an eccentric gear is installed so that the planetary gear mechanism makes one revolution in a direction opposite to the rotation direction of the rotary case during one revolution. In the rotary planting device with the bases provided in front of and behind the rotary case respectively, one planting arm starts pulling up the push rod, and the other planting arm in the middle of transporting the seedlings, A seedling guide is provided on the left and right along the inner side of the movement locus at the seedling take-out port of the seedling mounting table, and the seedling guide has a planting claw locus that is likely to cause rotational fluctuation due to deceleration of the vertical acceleration of the planting arm. A rotary planting device characterized in that the seedling guide is extended further downward from the position past the frontmost part, and the seedling guide is retracted from the movement path of the planting arm from the seedling take-out port to be vertically long. Seedling guide in.