JPH0445454Y2 - - Google Patents

Description

[Detailed Description of the Invention] (Industrial Application Field) The present invention relates to an improvement of a rotary planting device, that is, a type of transplanter that transplants the seedlings into a field using two planting disks.

(Prior Art) Transplanting machines that have a pair of rotating planting discs that are opened at the top or side and supply seedlings into the openings for planting are widely known.
No. 6596, JP-A-54-24729, JP-A-57-202212
It is stated in the number etc. The seedlings are supplied to the planting disk by holding the roots of the seedlings manually or by a device such as a seedling supply belt, and transferring the seedlings at the position where the opening of the planting disk is closed. Also, JP-A-57-202212
The issue states that it is best to make the rotational peripheral speed of the planting disk and the transfer speed of the seedling supply belt almost the same.

(Problem that the invention seeks to solve) However, when feeding onion seedlings with extremely long leaves or crop seedlings with spread out leaves to the planting disk, if the leaves are drooping, the leaves may is quickly drawn into the planting disc and disturbs the planting posture, especially in JP-A-57-
The device of No. 202212 was improved so that the seedling supply belt was rotated quickly in order to plant seedlings with leaves at regular intervals, and the conveyance of seedlings was stopped until the planting disc rotated at a predetermined angle. However, the drooping leaves are pulled into the planting disk, causing damage or being pulled out, resulting in the inability to plant at regular intervals.

(Means for solving the problem) The purpose of the device for preventing leaf entanglement in the transplanter of the present invention is to prevent the leaves from hanging down at the seedling transfer position between the vertical feed belt and the rotary planting device. , to prevent the drooping leaves from getting caught in the rotary planting device before the seedlings are properly delivered, thereby preventing the leaves from being damaged or
The purpose is to prevent irregular planting intervals in a series of transplanting operations, and its structure is as follows.

The seedling P to be transplanted is transported by the vertical feeding belt 6,
The roots are held by the rotary planting device 6', and the leaves are conveyed downward in a state in which they protrude into the leaf conveying path.
This is a transplanting machine in which the above-mentioned leaf side is held between the transplanters 7 and 7, and the plant is planted in a receiving field.

A leaf droop prevention member, that is, a leaf protection guide 8, is provided that temporarily holds the leaves above the seedling transfer position between the vertical feeding belts 6, 6' and the rotary planting device, that is, the planting disks 7, 7. It is installed so as to cross the leaf transport path.

(Function) When a seedling is conveyed downward with its roots held by the vertical conveyance belt and its leaves protruding into the leaf conveyance path and is about to reach the delivery position with the rotary planting device, its leaves are Even if the leaves are hanging down, they will be temporarily held in place by the leaf droop prevention member installed above the seedling transfer position, so the drooping leaves can be rotated and transplanted before the seedlings are officially transferred. There is no chance of getting caught in attached equipment.

(Example) An example of the present invention will be explained with reference to the drawings. Figure 1 shows an example of a transplanter equipped with the device of the present invention. In the figure, 1 indicates the machine frame of the transplanter. A mounting hole 2 is provided in the front of the machine frame 1 to connect it to a tractor, etc. Tow. A seedling stand 3 is provided above the machine frame 1, and seedlings P grown in paper tubes are loaded therein, and a transverse feed belt 4 is provided in front of the seedling stand 3, and the seedlings P on the seedling stand 3 are moved manually or by a seedling row separation device. (not shown) and are separated into rows and placed on the transverse conveying belt 4. At the conveying end of the horizontal conveying belt 4, a seedling presser ring 5 is provided above and a pair of vertical conveying belts 6 and 6', which serve as seedling supply belts, are provided in front, and the long belt 6 separates the seedlings into individual seedlings. , and a short belt 6', with the leaf part protruding, and transferred downward. The lower ends of the vertical feeding belts 6, 6' face the rotary planting device, that is, a pair of planting disks 7, 7, and the seedlings P are passed through the openings of the rotating planting disks 7, 7 and held therebetween. Slightly above the position where the seedlings are delivered, there is a leaf droop prevention member that temporarily holds the leaves, that is, a V-shaped leaf protection guide 8 that crosses the leaf conveyance path and is connected to a gear that will be described later. It is fixed to the box 17 so that its mounting position can be adjusted. Generally, the leaf protection guide 8 is preferably adjusted so that it can support the leaf from the middle to the tip. Therefore, the sent seedling P temporarily adjusts its posture at the position of the leaf protection guide 8 and is held between the planting discs 7, 7.

The planting discs 7, 7 rotate the rear opening of the opener 9, which is fixed below the machine frame 1 and opens toward the rear of the machine, to release the seedlings P held below, and release the seedlings P that are held in the lower part. Suppress and plant. The above device is driven by a suppression wheel 10, so a chain 12 is applied to a sprocket 11 fixed to the shaft of the suppression wheel 10, and a sprocket 14 fixed to the shaft 13 of the planting disk 7 is rotated. The rotation is transmitted to the drive shaft 16 by the bevel gear 15, and the rotation is transmitted to the drive shaft 16 by the bevel gear 15.
6 is a gear box 17 for driving the device;
It rotates the device.

In order to maintain a constant planting interval in the above device, it is necessary to feed the seedlings P in accordance with the rotation of the planting discs 7, 7. A photoelectric sensor 18 is placed above the seedling holding wheel 5 so as to sandwich the seedling leaf transfer path.
9 is provided with a rotary encoder 20.
In the gear box 17, the drive shaft 1
A driving chain wheel 21 is fixed to the end of the intermediate shaft 22, and the small chain wheel 23 of the intermediate shaft 22 is rotated via a chain 24. The large chain wheel 24' of the shaft 22 drives the small chain wheel 26 of the intermediate shaft 25 via a chain 27, and the shaft 25 is provided with a large chain wheel 28 for high speed rotation and a ratchet chain wheel 29 for constant speed feeding. The large chain wheel 28 rotates the small chain wheel 31 of the intermediate shaft 30 via the chain 32, and the ratchet chain wheel 29 rotates the drive shaft 33 of the longitudinal belt 6' at a constant speed via the constant speed chain wheel 34 and chain 35. As expected.
A fast-forwarding chain wheel 36 and an electromagnetic clutch 37 and a gear 38 integrated therewith are attached to the drive shaft 33.
and the ratchet chain wheel 2 interlocked via the chain 40.
The shaft 33 is rotated at a speed 2 to 5 times faster than the rotation by 9. Further, the gear 38 meshes with a gear 38' provided on the shaft 33' of the vertical conveying belt 6 on the other side and rotates inwardly. Furthermore, a small chain wheel 4 is attached to the shaft 25.
A large chain wheel 43 fixed to the drive shaft 42 of the transverse belt 4 is rotated via a chain 44 so that the circumferential speed of the transverse belt 4 is 1/5 to 20 minutes of the circumferential speed of the longitudinal belt 6. It is set so that it becomes 1. Also shaft 42
A gear 45 is provided on the shaft 19 of the seedling holding ring 5.
6, the circumferential speeds of the seedling presser ring 5 and the transverse feed belt 4 are set to be approximately the same. Therefore, the rotary encoder 20 is synchronized with the rotation of the planting disk 7 and outputs a pulse signal by the rotation.

The signals from the sensor 18 and the rotary encoder 20 are input to a control unit (CPU), which has a built-in counter 47 whose output side is connected to the electromagnetic clutch 37. Therefore, as described above, when the sensor 18 detects a seedling, the counter 47 starts counting, and within a predetermined set value, the clutch 37 is not operated and the vertical feed belt 6 is rotated at a constant speed by the ratchet chain wheel 29. When the value is exceeded, the electromagnetic clutch 37 is activated and the large chain wheel 28, small chain wheel 31, large chain wheel 39, and fast-forwarding chain wheel 36 rotate, and the ratchet chain wheel 29 is idle, so the speed is faster than the constant speed rotation. Switch to rotation. Also, since the next leaf is detected by high-speed rotation, the control unit (CPU) returns to zero, the electromagnetic clutch 37 also returns to its original state, and the constant speed rotation by the ratchet chain wheel 29 is restored.

In the above device, the vertical conveying belts 6, 6' temporarily stop when the sensor 18 detects a seedling.
In the stop position, the leaf is supported by the leaf protection guide 8. This prevents the leaves of the seedlings P sent by high-speed rotation from moving due to inertia or hanging down due to their own weight, and prevents the leaves from being eaten into the constantly rotating planting discs 7, 7. The rotary encoder 20
When the number of signals reaches a predetermined number, the vertical feed belts 6, 6'
Since the rotation speed returns to constant speed, the leaves of the seedling P leave the leaf protection guide 8 and are quickly held between the planting discs 7, 7.

(Effects) As is clear from the above description, the device of the present invention provides the following effects.

When the seedlings are conveyed downward with their roots held by the vertical conveyance belt and their leaves protruding into the leaf conveyance path, and the seedlings are about to reach the delivery position with the rotary planting device, their leaves are hung down. Even if the seedlings are dropped, they will be temporarily held by the leaf droop prevention member installed above the seedling transfer position, so the drooping leaves can be transferred to the rotary planting device before the seedlings are properly transferred. I don't get caught up in it.

Therefore, there will be no damage to the leaves or uneven planting intervals during a series of transplanting operations.

[Brief explanation of the drawing]

FIG. 1 is a side view of a transplanter equipped with the device of the present invention, FIG. 2 is a front view of main parts, FIG. 3 is an exploded view of the drive device, and FIG. 4 is an explanatory diagram of the control device. 6, 6'... Vertical feed belt, 7, 7... Rotating planting device, ie, planting disk, 8... Leaf hanging prevention member, ie, leaf protection guide, P... Seedling.

Claims (1)

[Scope of utility model registration request] Seedlings to be transplanted are conveyed downward with their roots held by a vertical conveyance belt and their leaves protruding into the leaf conveyance path, and then transferred to a rotary planting device with the leaf side held between them. In the transplanter, the leaf drooping prevention member for temporarily holding the leaf above the seedling transfer position between the vertical feed belt and the rotary planting device is installed in the leaf transport path. A device for preventing leaf entanglement of a transplanter, characterized in that the device is installed in a state where the leaves are crossed.