JPS60199309A - Seedling planting apparatus - Google Patents

Abstract

(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

DETAILED DESCRIPTION OF THE INVENTION (a) Field of Industrial Application The present invention relates to a seedling planting device used in a rice transplanter.

←0 Prior Art The seedling planting device of the TFL transplanter, which is currently in widespread use, takes out the seedlings placed on the seedling platform from the seedling outlet and plants them in the field. It reciprocates in the left and right directions with a stroke, and during this period, the seedlings on the seedling platform are taken out one by one by the seedling planting claw, which reciprocates in a predetermined trajectory in the vertical direction, and are planted on one side of the opening. . This seedling-planting claw is designed to move reciprocatingly while shifting between the seedling-taking position when taking out the seedlings from the seedling stand, and the position when carrying the taken-out seedlings up to the 11th surface and inserting them into the rice field. ,
The mechanism was complex due to the combination of the crank mechanism, cam mechanism, and spring mechanism, and there were problems such as large torque fluctuations and large machine vibrations, which also limited the efficiency of seedling planting.

9 Problems to be Solved by the Invention In view of the above circumstances, the present invention reduces vibration and torque fluctuations by using a planting mechanism based on rotational movement of seedling planting (JHf!l), The present invention aims to provide a seedling planting device that lowers the number of rotations by alternately operating the .

(d) Means for solving the problem In order to achieve this object, the present invention takes out the seedlings placed on the seedling stand from the seedling take-out port and allocates them at once.
The seedling planting device has a transmission body that is opposite to the seedling take-out port and that extends in a radial direction for a predetermined length from a center of rotation, and is pivotally supported so as to rotate in one direction. , a seedling retrieval/planting mechanism is installed at the tip of the transmission body, and a gear train using eccentric gears or elliptical gears, or two gear trains with a speed difference of 5 is provided inside the transmission body, The attitude of the seedling retrieval/planting mechanism is changed according to the rotational movement of the transmission body.
The device is characterized in that it is configured to be displaced between a seedling-taking posture and a seedling-planting posture.

C1◇ Implementation example Hereinafter, one example of the present invention will be explained with reference to the drawings.

Figure 1 shows a riding rice transplanter to which the present invention is applied.
l! The En transplanter has a hydraulic cylinder 3 at the rear of the passenger car body 1.
An elevating link 2 that moves up and down by expansion and contraction is provided (J).A seedling planting device 4 is attached to a small portion of this elevating link 2.

This seedling planting device 4 has a main body 5 that also serves as a transmission frame.
A seedling mounting table 6 that is supported in a forward-sloping manner so as to reciprocate in the left-right direction with a predetermined stroke, and this seedling mounting table 6
The planting body transmission case 8, which rotates forward (in the direction of the arrow) around the support shaft 7, is placed at a position opposite to the seedling take-out port (not shown) provided at the lower end of the slope of the planter. Planting bodies 9.10 are attached to both ends of the body transmission case 8. Further, on the lower side of the main body 5, a pair of front and rear links 11.1 are provided.
1, a flow valve 12 is attached so that it can move up and down.

As shown in FIG. The rice transplanter moves, takes out the seedling mat M on the seedling platform G at the upper end position of this static trajectory A, and plants the seedlings taken out on the rice field at the lower end position. Since the forward speed of is added, the planting body 9 draws a modified trochoid curve with a moving trajectory 9Δ, and the planting body 1° has a moving trajectory 10A, and takes out the seedlings and performs the planting (J operation).

In the planting body transmission case 8, as shown in FIGS. 3 to 5, power is supplied to the other end of the support shaft 7 whose one end is fixed to the main body 5 by a driving sprocket wheel 13 (see FIG. 4). The sun gear 14, which rotates in response to the rotation of the sun gear
A planetary gear 16 meshes with the intermediate gear 15 that meshes with the planetary gear 4. On the other hand, a large gear 18 is fixed to the intermediate shaft 17 of the intermediate gear 15, and a small gear 1 that meshes with the large gear 18
9 is fixed to a planetary shaft 20, and a planting body rocking crank 21 is attached to the tip of this M axle 20.

On the other hand, the implanted body 9 is connected to the planet gear 16 via the arm 22.
The base of 10 is rotatably supported, and these planting bodies 9, 10
The rocking crank 21 is always in sliding contact with the follower 23 extending to the opposite side via the spring 24.
) can be swung between a seedling take-out position and a seedling planting position.

16 and 7 show another embodiment in which one planting plant 9.10 is swung from the seedling take-out position to the seedling planting position. axis l
An eccentric (elliptical) gear 25 is attached to the
Intermediate eccentric (elliptical) m wheel 26 that meshes with the oval) teeth 1225
．． 2G! , Q cJ, and the eccentricity (ellipse) Iv! which meshes with this intermediate eccentricity (ellipse) gear 26.26. 1 car 27.2
By attaching the planting bodies 9 and 10 to the axis of the seedling 7, the rotation transmitted from the eccentric (elliptical) gear 25 becomes non-uniform, and the planting bodies 9 and 10 are moved from the seedling removal position. It is designed so that it can be swung to the seedling planting position.

8) and O show the planting bodies 9 and 10 with seedling extrusion forks 28 attached, and the planting bodies 9.1 and 10.
An eccentric cam 29 is provided on the outer periphery of the rotation centers 9a and 10a of the rotor 0, and a cam follower A lower 3 is in sliding contact with the eccentric cam 29.
The base of a swinging arm 31 having a diameter of 0 is pivoted to the base of the 9° 10 for planting, via a bottle 32, and a seedling take-out lever 28 is fixed to its lower end through an elongated hole 33 at its tip. A tension spring 35 pivotally supports the upper end of the vertically movable arm 34 and is tensioned between the planting body 9.10 and the swinging arm 31.

The seedling take-out fork 28 is displaced 4 from the seedling take-out position shown in (G) to the seedling planting position 0 as the rotation center 9a (10a>) of the planting body 9.10 rotates. It has become.

and planting (=J body 9.10 is the fraction in which the seedlings are removed from the seedling stand 6 while displacing the melon as shown in Fig. 9)
Transmission case 8
This is done continuously by rotating the .

In the seedling planting device having such a configuration, the seedling planting device 4 receives power from the passenger vehicle body 1 and operates as the passenger vehicle body 1 travels, and the seedling planting device 4 receives power from the passenger vehicle body 1 and operates, reciprocating from side to side. The transmission case 8 rotates around the support shaft 7, and as a result of this rotation, the planting body 9.10 takes out the seedlings from the seedling take-out port and plants them on the 111 side. To go.

[41ilIf] The device of the present invention is constructed such that the q-body transmission case 8 rotates in the front direction (arrow) direction around the support shaft 7, and the q-body 9.10 rotates in the forward (arrow) direction. Figures 3 to 5
The seedling planting position is displaced from the seedling take-out position r to the seedling planting position by means of the south-center row shown in the figure or the eccentric (tfj FJ) gear shown in Fig. 6 J3 and Fig. 7. Compared to Plant 14, it exhibits superior functions such as faster speed, less vibration, and less noise. Experiments have confirmed that this improvement can improve efficiency by two to three times compared to conventional planting equipment.

Eccentricity (ellipse) in FIGS. 6 and 7 in the above example
If a gear is used, the angle of the planting body 9.10 becomes uncertain due to the backlash of the gear during seedling extraction (fractionation), which affects the ff1 of the seedlings to be fractionated, so the cam It is best to use a spring to apply a load to one side only at this time to eliminate looseness.

In addition, in the above embodiment, the planting body transmission case 8 is shown as extending linearly on both sides around the support shaft 7.
It is also possible to have three or four transmission cases extending radially from the support shaft 7, and it is possible to extend this transmission case in radial directions from the support shaft 7. It can also be applied to planting equipment.

(f) As described in detail of the invention, if the seedlings of the present invention are planted (=J), the seedlings are taken out at the tip of the transmission body extending in the radial direction from the center of rotation, and the planting machine groove is iJ, Seedling extraction and planting (=J mechanism is configured so that the posture is displaced between the seedling extraction posture and the seedling planting posture with the rotational movement of the transmission body, so that the seedling extraction and planting (=J It can be done efficiently and accurately, and
Since the transmission body is automatically displaced while rotating, there is less vibration.
In addition, noise is reduced, the structure is simplified, torque fluctuations are reduced, and durability is improved.

[Brief explanation of drawings]

Fig. 1 is a side view of the entire application of the present invention to a riding type rice transplanter, Fig. 2 is a side view of the main parts showing the locus of movement of the planting body as the ridged body transmission case (rest) rotates; Fig. 3 is a partial longitudinal sectional side view of an embodiment of the transmission body, Fig. 4 is a diagram of the same transmission system, Fig. 5 is a diagram explaining the same operation, and Fig. 6 is a vertical sectional side view showing another embodiment of the transmission body. Figure 7 is an explanatory diagram of the same effect, Figure 8 (towards), 0)
9 is a partial side view showing the seedling extrusion arm, and FIG. 9 is a graph showing the rotation angle of the transmission body and the displacement state of the planting body. DESCRIPTION OF SYMBOLS 1... Passenger vehicle body, 2... Lifting link, 3... Hydraulic cylinder, 4... Seedling planting device, 5... Main body, 6...
・Number of bacteria V, 7... Support shaft, 8... Planting body transmission case, 9.10... Planting (tube body, 9a, 10a... Rotation center, 11... Link, 12 ...) Roth, 13
... Sprocket wheel, 14... Thick FM gear,
15... Intermediate gear, 16... Planetary gear, 17...
Intermediate shaft, 18・, *Tooth I, 19-minor tooth rg, 20-m
1 axis, 21-J+i'BJ body rocking crank, 22...
Arm, 23...Follower, 24...Spring, 25
．． 2G, 27... Eccentric (elliptical) gear, 28... Seedling extrusion fork, 29... Eccentric cam, 30... Cam follower, 31... Swing arm, 32... Bin,
33... Long hole, 34... Vertical movement arm, 35...
Tension spring, △...Static IA trace, 9A, 10A...Movement trajectory, M...Sapling pine 1~. Patent applicant Noshiba Mechanical Research Institute agent Patent attorney I Rθ Kobashi Patent attorney Susumu Muratsuki

Claims (1)

[Claims] In the seedling #i corner device, which takes out the seedlings placed on the seedling platform from the seedling take-out port and plants them in the field, A transmission body extending in the radial direction for a predetermined length is supported so as to rotate in one direction, and a seedling retrieval/planting mechanism is attached to the tip of the transmission body, and an eccentric gear or an elliptical tooth 111 is installed inside the transmission body. A gear train using a gear train or two gear trains with different speeds is provided, and the attitude of the seedling retrieval/planting mechanism is changed according to the rotational movement of the transmission body, and the attitude of taking out the seedlings and the attitude of planting the seedlings are the same. Seedling planting method @n0 characterized by its structure to avoid displacement.