JPH0343932Y2 - - Google Patents

Description

[Detailed Description of the Invention] This invention relates to a seedling harvesting amount control device in a multi-row rice transplanter for multi-row planting such as four-row planting.

In a rice transplanter, in order to adjust and vary the amount of seedlings removed per one planting claw, a seedling removal amount gauge is used, and this is set in the seedling removal opening of the sliding plate.
It is well known that adjustment is performed by placing the tip of the seedling planting claw against a seedling removal amount gauge. This is normally done by displacing the swinging arm that controls the posture of the planting claw using a seedling removal adjustment knob.

By the way, in the rice field A shown in FIG. 7 where the rice planting work is to be carried out, a portion C (shaded portion) along the ridge B at the periphery remains in a state where no seedlings are planted by the rice transplanter. This is because in the case of a rice transplanter, the sliding plate protrudes longer than the seedling stand on both sides of the machine body, or if the ridge C is made of concrete, we do not want to damage it by accidentally hitting the machine body. However, in order to keep the effective usable area of the rice field A high, in the past, rice was manually planted in the ridge area C after the rice transplanter had completed the work.

The purpose of this invention is to provide a device that allows rice transplanting to be carried out using a rice transplanter, with consideration taken in advance so that the subsequent manual planting work can be carried out with as little effort as possible, even when such manual planting work must be carried out. The feature is that by using the conventional adjustment knob to adjust the amount of seedlings removed, the swinging arm for controlling the amount of seedlings removed from the outermost seedling planting claw of the machine can be used to control the amount of seedlings removed. The present invention provides a seedling removal amount control device for a multi-row rice transplanter which is configured to displace the seedling removal amount to a removal amount position and to quickly perform a wide-scale change operation of the seedling removal amount with a single touch from a control section.

With this configuration, when the machine is running along the edge of a ridge to perform rice planting work, the swinging arm for controlling the amount of seedlings taken on the outermost side adjacent to the edge of the ridge is operated from the control unit. If the position is changed all at once to a position where the amount of seedlings is approximately doubled, the amount of seedlings removed by the outermost seedling planting claw will be twice as much as that of the other rows. Therefore, the subsequent hand-planting work only requires the effort of dividing the twice the amount of seedlings that have been planted along the ridge and moving them to the side, and the hand-planting work can be completed quickly and easily. can.

In multi-row type rice transplanters, it is possible to double the amount of seedlings taken from the ridge side as described above by rotating the seedlings removal amount adjustment knob, This not only takes time, but also requires the aircraft to be stopped and the engine also stopped for safety reasons, which is not desirable in terms of work efficiency.
Moreover, in order to prevent the knob from turning unexpectedly other than when adjusting the amount of seedlings to be taken, or to prevent the amount of seedlings from changing erratically due to being touched by someone else, a fairly strong spring pressure is generally applied to the knob. Since a structure is adopted to prevent the rotation of the knob, a considerable amount of human power is required to rotate the knob, making it even less quick. However, with this invention, these difficulties can be eliminated at once, and double the amount can be taken out with a single touch operation from the control unit seated on the aircraft without interrupting the planting operation, which is practically useful.

The details of this invention will be explained below based on the drawings. Figure 1 shows a four-row riding type rice transplanter as an example of a rice transplanter. Part 4 and fuselage 3
Engine 5 is installed in the front of the vehicle. A planting work machine 7 is connected to the rear of the machine body 3 via an elevating link mechanism 6, and in this machine 7, a drive device 9 receives power from the machine body side via an input shaft 8, and a sliding plate 10 is driven by the device 9. A seedling stand 1 that is reciprocated laterally along
1, 11a and planting claw mechanisms 12, 12a are provided, and a float 13 for holding the working machine 7 above the planting mud surface is suspended.

Seedling stands 11, 11 as shown in Figures 2 and 3
In the case of the sliding plate 10 provided at the lower end of a, a seedling take-out port 14 is formed in a cutout facing the seedling trays 11 and 11a, respectively, and a planting claw mechanism 1 is formed in a corresponding manner.
Two seedling planting claws 15 are provided, and the planting claw mechanism 12,
12a applies the rotational movement shown in FIG.
The seedlings are taken out and carried to the planting mud surface for planting. That is,
A crank arm 17 is attached to a rotating shaft 16 rotated by the drive device 9, and a seedling planting claw 15 is attached to the tip of the arm 17 via a clamp pin 18. A swinging arm 20 consisting of a center-folding link mechanism is installed between the fixed frame 19 and the seedling planting claw 15,
The end 2 of the swinging arm 20 is adjusted using the seedling removal amount adjustment knob 21.
By pulling up or pushing down 0a, the attitude of the seedling planting claw 15 is changed as shown by the solid line and the chain line, and the amount of seedlings taken is adjusted. In particular, in the case of the planting claw mechanisms 12a, 12a on the outermost part of the machine body in FIG. A shaft (screw shaft) 23 is inserted and supported so as to freely rotate and move up and down, and an adjustment shaft 23 is threaded and inserted into the swing arm end 20a. Furthermore, a compression spring 26 is interposed between the fixing member 22 and the collar body 25 inserted into the lower end of the adjustment shaft 23 using a retaining pin 24, so that a downward traction force is always applied to the shaft 23. On the other hand, on the knob side, a locking groove 27 is provided around and recessed in the adjustment shaft 23, and when the locking pin 28 is inserted into and engaged with this locking groove 27, the fourth locking pin 28 resists the compression spring 26.
As shown in the figure, the knob 21 and adjustment shaft 23 are locked in the raised position. The locking pin 28 is supported on the fixed frame 19 by a suitable support member 29, and is always pushed to the locked position by the action of a biasing spring (not shown), which is connected to the operating lever provided in the control section 4 (see Fig. 6). 30 with a wire 31. In addition, a seedling stand 11a at the outermost part of the body 3,
11a, a wheel shaft 33 supporting star wheels 32, 32 for feeding seedlings is connected to a wheel shaft 35 inside the machine body via a clutch 34 as shown in FIG. During operation, the clutch sliding piece 34a is simultaneously slid away from the clutch fixing piece 34b via the wire 36, thereby breaking the connection between the shafts 33 and 35.

During rice planting work, each planting claw mechanism 12, 12
At a, under the condition shown in Fig. 4, turn the seedling removal amount adjustment knob 2.
1, set the posture of the seedling planting claws 15 as shown by the chain line in FIG. In this state, the amount of seedlings planted in each row is constant as usual. Aircraft 3 reached ridge C,
When working along this ridge C, the operation lever 30 is used to move the locking pin 28 back and remove it from the locking groove 27 on the planting claw mechanism 12a on the outermost side of the machine body adjacent to the ridge C side. . Therefore, as shown in Fig. 5, the adjustment shaft 23 and the swinging arm 20 move downward at once by the action of the released compression spring 26, and the seedling planting claw 15 is displaced to the position shown by the solid line in Fig. 3. The amount increases. This should be approximately double the amount used for normal seedling harvesting. If planting is carried out after that, as shown in Figure 7, twice as many seedlings will be planted in the planting row closest to the ridge C (indicated by the symbol ○×), and in other planting rows (indicated by the symbol ×). ) is the normal amount. Note that when the lock is released using the operating lever 30, the clutch 34 is simultaneously disengaged and the star wheel 32 on the seedling stand 11a becomes freely rotating.
Although the seedling planting claw 15 takes out twice the number of seedlings on this seedling platform 11a, the seedlings on this platform 11a are removed from the seedling platform 1.
The seedling slides down at a faster speed than the seedlings above 1 and reliably supplies the seedlings to the seedling planting claw 15. That is, in a normal usage mode, the amount of seedlings taken out from either of the seedling stands 11, 11a is set to be equal and must be equal, so the rotational speed of the star wheel that feeds the seedlings down on the seedling stands is (Bottom feed amount)
is set to be constant in both seedling stands 11 and 11a, but if you consciously double the amount of seedlings in a specific planting row as described above, the lower feed rate of this seedling stand 11a will increase. The quantity must also be increased.
Therefore, the star wheel 3 of this seedling stand 11a
2 is separated from the star wheels of the other seedling stands 11 to allow it to rotate freely, so that the seedlings slide downward under their own weight so that the amount of downward feed is matched to the amount of seedlings taken. After completing the rice planting work, we added the manual planting work of dividing the double amount of seedlings that were planted in the planting row ○× into halves and moving the half quantity to the position indicated by the symbol ○ in the shaded area C, thereby completing the entire rice planting work. do.

Although the above embodiments have been described with reference to four-row rice transplanters, it would be beneficial to widely apply this invention to multi-row rice transplanters such as six-row rice transplanters and eight-row rice transplanters.
As described above, according to the present invention, it is possible to easily and quickly double the amount of seedlings taken by the outermost planting claw of the machine with a single touch. Adjustment can be made using a conventional adjustment knob for adjusting the amount of seedlings taken, which is very practical.

[Brief explanation of drawings]

Fig. 1 is a side view showing an example of a riding-type rice transplanter, Fig. 2 is a plan view of the working machine portion, Fig. 3 is an enlarged side view showing the relative relationship between the seedling take-out port and the planting claw mechanism, and Fig. 4 is a side view showing an example of a riding-type rice transplanter. 5 and 5 are enlarged longitudinal sectional side views of the main parts shown in FIG. 3 for explaining the operation, FIG. 6 is a schematic diagram of the wheel shaft clutch portion, and FIG. 7 is a conceptual diagram of rice planting work to explain how to use the machine. 10... Sliding plate, 11, 11a... Seedling stand,
15... Seedling planting nail, 20... Swinging arm, 26-3
1...Means for rotating the swinging arm.

Claims (1)

[Scope of utility model registration request] A seedling take-out port 14 is provided on the sliding plate 10 at the bottom of the seedling table, and a swing arm 20 that extends between the seedling take-out port and the ground is comprised of a crank arm 17 and a center-folding link mechanism that allows the swing fulcrum to be changed. The rice transplanter is equipped with a seedling planting claw 15 that is rotated by a rice transplanter, and a fixing member 22 is attached to the other end 20a of the swinging arm of the seedling planting claw 15 located at the outermost side of the machine body.
It can be freely rotated by the seedling removal amount adjustment knob 21,
The adjustment shaft 23 is inserted and supported so that it can be raised and lowered, and the adjustment shaft is biased in one direction by a compression spring 26. Seedling picking for a multi-row rice transplanter, which is provided with a locking groove 27 around which a locking pin 28 can be engaged when the rice is pulled up against resistance, and the locking pin can be detached from the locking groove by operation from a control section. Volume control device.