JPH0446504Y2 - - Google Patents

Description

[Detailed description of the invention] (Industrial application field) The present invention relates to a soil-dropping device in a seeding device for a seedling nursery box.

(Prior art) The conventionally known Japanese Utility Model Application Publication No. 60-44513 discloses a long transfer conveyor before and after transferring seedling boxes, a covering soil supply device provided above the transfer conveyor, and a device provided above the transfer conveyor. A rotating brush is provided in front of the soil covering supply device and sweeps out excess soil in the seedling growing box, and the transfer conveyor is provided with a fast forwarding device that quickly transports the seedling growing box after the soil covering supply device has finished supplying the seedling growing box. The above-mentioned rotary brush is described in terms of a soil-dropping device in a seedling box seeding device in which the height of the rotating brush can be adjusted freely.

The conventionally known Japanese Utility Model Application Publication No. 57-91453 discloses a long transfer conveyor before and after transferring seedling boxes, a covering soil supply device provided above the transfer conveyor, and a covering soil supply device provided above the transfer conveyor. A scraper is provided to scrape off the covering soil accumulated on the edge of the seedling growing box provided on the front side, and the scraper is formed into an L-shape in side view, and the rotation shafts at both ends thereof are connected to supports provided on the transfer conveyor. The board describes a configuration in which the seedling box is rotatably pivoted between a retracted position where the seedling box is rotated forward facing the forward movement trajectory of the seedling box and an upward rotation position where the covered soil is scraped off during the return movement of the seedling box. ing.

(Problem to be solved by the invention) The rotating brush described in the above-mentioned Japanese Utility Model Application Publication No. 60-44513 sweeps out excess soil in the seedling box,
It is installed to obtain a certain level of covering soil, and cannot be expected to have much effect in scraping off the covering soil that has accumulated on the edge of the seedling box. In other words, the tip of the rotating brush extends below the edge of the seedling box, so at the edge,
The tips of the bristles are separated to the left and right, making it impossible to sweep directly over the upper surface of the edges.

Furthermore, since the scraper described in Japanese Utility Model Application Publication No. 57-91453 is particularly formed in an L-shape in side view, the front end of the seedling box gets caught on the lower end of the scraper, stopping the transfer of the seedling box. There is a problem with doing so. In particular, when seedling growing boxes of different heights are supplied, the front end of the seedling growing box gets caught on the lower end of the scraper.

(Purpose of the invention) Therefore, the present invention is capable of reliably removing soil accumulated on the edge of a seedling nursery box so that it does not enter subsequent seedling raising boxes, even when using a scraper made of a metal plate, and also removes soil that has adhered to it. It is designed to be automatically removed.

(Means for Solving the Problem) Therefore, the present invention includes a long transfer conveyor 1 before and after transferring the seedling growing boxes 2, a soil covering supply device 18 provided above the transfer conveyor 1, and a In the seedling box seeding device, the transfer conveyor 1 is provided with a scraper 23 which is provided on the front side 4 of the covering soil supply device 18 and scrapes off covering soil etc. accumulated on the edge of the seedling growing box 2. Seedling raising box 2 that has been covered with soil by the device 18
The scraper 23 is L-shaped in side view and is rotatable between a downward rotating position facing the transfer trajectory of the seedling growing box 2 and an upward rotating position for scraping off the covering soil. Along with forming
A guide plate 30 is provided on its rear surface against which the front end 31 of the seedling raising box 2 abuts, and the downward rotation of the scraper 23 is carried out within the gap 41 formed between the preceding seedling raising box 2 and the succeeding seedling raising box 2 by the rapid forwarding device. This is a soil-dropping device in a seeding box sowing device configured to perform seedling seedlings.

(Structure) An embodiment of the present invention will be described with reference to the drawings. Reference numeral 1 denotes a horizontal conveyor that transports the seedling raising box 2 from the rear side 3 to the front side 4, and is formed long in the direction of transporting the seedling raising box 2. It is installed on the floor by supporting legs 5 provided at desired positions.

The seedling raising box 2 is made of synthetic resin and has a rectangular shape that is long from front to back when viewed from above.

A floor feeding device 6 is provided on the rear side 3 of the transfer conveyor 1. The on-bed feeding device 6 is formed of a bedding soil supply hopper 7, a feeding belt 8, a soil supply amount adjusting device 9, etc., and feeds the bedding soil 1 into the seedling box 2 passing below.
Supply 0.

A rotary brush 1 is provided on the front side 4 of the bed soil supply device 6.
1, a free roller 12 is provided on the front side 4 of the rotating brush 11, a pair of front and rear irrigation nozzles is provided on the front side 4 of the free roller 12, and a seed supply device 14 is provided on the front side 4 of the irrigation nozzle 13. established,
A covering soil supply device 1 is provided on the front side 4 of the seed rice supply device 14.
8 will be provided. The seed rice supply device 14 is a hopper 1
5, a seed feed roll 16, etc. The soil covering supply device 18 includes a hopper 19, a feed belt 20, a soil supply amount adjusting device 21, and the like.
When the seedling raising box 2 passes below the rice seed supply device 14, seeds are sown, and when it passes below the soil covering supply device 18, sieved soil 22 for covering soil is supplied.

A plurality of guide rolls 32 are arranged at desired intervals between the rear end of the transfer conveyor 1 and a slightly forward position of the soil covering supply device 18. A fast-feed drive roll 36 and a plurality of fast-feed rolls 42 are provided on the front side.

A sprocket 34 is fixed to the shaft 33 of each guide roll 32, and a chain 35 is wound between each sprocket 34. 17 is a motor that rotates the guide roll 32.

The shaft 33 of the frontmost guide roll 32 further includes:
A large diameter sprocket 39 is fixed, and a small diameter sprocket 3 is fixed to the shaft 37 of the rapid feed drive roll 36.
8 is fixed, a chain 40 is wound between the sprocket 39 and the sprocket 38, and the fast-forward drive roll 36 is rotated faster than the guide roll 32. Further, the fast-feed drive roll 36 and the fast-feed roll 42 are connected by a chain 43.

Therefore, the seedling growing box 2 supplied to the rear side 3 of the transfer conveyor 1 is transferred at a predetermined speed by the guide roll 32, passes below the soil covering supply device 18, and when the supply of the sieved soil 22 is completed, The rapid forward drive roll 36 and the rapid forward roll 42 take over the rapid forwarding toward the front side 4, and the rear end 46 of the preceding seedling growing box 2 that is fast forwarded and the front end 31 of the succeeding seedling growing box 2 that is being fed at a low speed. A gap 41 is formed therebetween.

23 is sieved soil 22 deposited on the edge of the seedling raising box 2.
A scraper is provided at a position where the sieve soil 22 can be scraped downward using the gap 41. The scraper 23 is an upper plate 2 made of a thin metal plate.
4 and a lower plate 25, which has an L-shape on the side, and is slightly longer than the left and right width of the seedling raising box 2. A rotation shaft 26 in the left and right direction is attached to the upper end of the upper plate 24.
and both ends of the rotating shaft 26 are rotatably fixed to a support plate 28 attached to the frame 27 of the transfer conveyor 1, and the scraper 23 uses the gap 41 by its own weight or spring elasticity to remove the raised seedlings. It rotates downward to a position facing the movement trajectory of box 2.

A guide plate 30 is provided at the left and right center portions of the rear surface of the scraper 23. Reference numeral 29 denotes a rear end edge of the guide plate 30, and when the rear end edge 29 comes into contact with the front end portion 31 of the seedling raising box 2, the scraper 23 is smoothly rotated upward.

(effect) Next, the action will be described.

When the seedling growing box 2 is placed on the guide roll 32 on the rear side 3 of the transfer conveyor 1, the seedling growing box 2 is placed on the guide roll 3
2 toward the front side 4, and is supplied with bed soil 10 by an on-floor supply device 6, and is then transported to the front side 4 by a rotating brush 11.
After the excess bed soil 10 is removed by the free roller 12 and the bed soil 10 is pressed by the free roller 12, it is irrigated by the irrigation nozzle 13 and further transferred to the front side 4,
Seeds are sown by the seed supply device 14, and sieved soil 22 for covering soil is supplied by the soil covering device 18.

The seedling raising box 2, which has been supplied with the sieved soil 22 for covering soil, is further advanced by the guide rolls 32, and its front end 31 is rotated downward to the movement trajectory of the seedling raising box 2 due to its own weight or spring elasticity. It collides with the rear end edge 29 of the scraper 23 that is moving.

Then, the scraper 23 moves upward while rotating clockwise in the figure, and the seedling box 2 passes below it. At this time, the lower edge of the lower plate 25 of the scraper 23 is angled like a key hand and comes into close contact with the upper surface of the edge of the seedling box 2, so the soil is deposited on the edge of the seedling box 2 without going over the accumulated soil. Sweep the sieved soil 22 backward so as to easily scrape it off.

Thus, the seedling box 2 passing under the scraper 23 is rapidly forwarded toward the front side 4 by a fast-forwarding mechanism consisting of a fast-feeding drive roll 36 and a fast-feeding roll 42, so that the rear end of the seedling-growing box 2 is When the portion 46 passes below the scraper 23, there is a gap 41 between the portion 46 and the front end portion 31 of the succeeding seedling growing box 2.
is formed, and the sieve soil 22 swept backward by the scraper 23 falls downward through the gap 41 and does not fall into the seedling growing box 2.

Further, even if soil adheres to the inner surface of the lower plate 25 of the scraper 23, the scraper 23 rotates downward every gap 41 formed in front of the succeeding seedling growing box 2, and the front end 31 of the seedling growing box 2 scraper 23 every time
Since the structure is such that the soil is pushed upward while colliding with the soil, the impact of each collision removes the adhered soil and maintains good performance.

(Effects) The conventionally known Japanese Utility Model Application Publication No. 60-44513 discloses a long transfer conveyor before and after transferring seedling boxes, a soil covering supply device provided above the transfer conveyor, and a soil-covering device provided above the transfer conveyor. A rotary brush is provided on the front side of the soil covering supply device and sweeps out surplus soil in the seedling growing box, and the transfer conveyor is provided with a fast forwarding device that quickly transports the seedling growing box after the covering soil has been supplied by the soil covering supply device. A rotary brush is described for a soil-dropping device in a seedling box seeding device in which the height of the rotating brush can be adjusted freely.

The conventionally known Japanese Utility Model Application Publication No. 57-91453 discloses a long transfer conveyor before and after transferring seedling boxes, a covering soil supply device provided above the transfer conveyor, and a covering soil supply device provided above the transfer conveyor. A scraper is provided on the front side to scrape off the covering soil accumulated on the edge of the seedling raising box, and the scraper is formed into an L-shape when viewed from the side, and a support plate having rotating shafts at both ends of the scraper is provided on the transfer conveyor. describes a configuration in which the seedling box is rotatably pivoted between a retracted position facing the outward movement trajectory of the seedling box and rotated forward by the seedling box and an upward rotation position where the covered soil is scraped off during the return movement of the seedling box. There is.

The rotating brush described in the above-mentioned Japanese Utility Model Publication No. 60-44513 sweeps out excess soil in the seedling box,
It is installed to obtain a certain level of covering soil, and cannot be expected to have much effect in scraping off the covering soil that has accumulated on the edge of the seedling box. In other words, the tip of the rotating brush extends below the edge of the seedling box, so at the edge,
The tips of the bristles are separated to the left and right, making it impossible to sweep directly over the upper surface of the edges.

Furthermore, since the scraper described in Japanese Utility Model Application Publication No. 57-91453 is particularly formed in an L-shape in side view, the front end of the seedling box gets caught on the lower end of the scraper, stopping the transfer of the seedling box. There is a problem with doing so. In particular, when seedling growing boxes of different heights are supplied, the front end of the seedling growing box gets caught on the lower end of the scraper.

However, the present invention includes a long transfer conveyor 1 before and after transferring the seedling raising boxes 2, a covering soil supply device 18 provided above the transfer conveyor 1, and a portion above the transfer conveyor 1 and in front of the covering soil supply device 18. In the seedling box seeding device, the transfer conveyor 1 is provided with a scraper 23 for scraping off the covering soil etc. accumulated on the edge of the seedling growing box 2. A fast-forwarding device is provided for rapidly forwarding the box 2, and the scraper 23 has an L-shape in side view and rotates between a downward rotating position facing the movement trajectory of the seedling raising box 2 and an upward rotating position for scraping off the covered soil. In addition, a guide plate 30 is provided on the rear surface of which the front end 31 of the seedling raising box 2 abuts, and the downward rotation of the scraper 23 is caused by the rapid forwarding device between the preceding seedling raising box 2 and the succeeding seedling raising box 2. Since this is a soil-dropping device for a seedling box sowing device configured to sow within the gap 41 formed, even if an inexpensive scraper made of a metal plate is used, soil accumulated on the edge of the seedling box can be removed. It is possible to reliably remove soil so that it does not enter subsequent seedling boxes, and it is also possible to automatically remove attached soil.

Further, a guide plate 30 is provided on the rear surface of the scraper 23.
is provided, so that when the front end 31 of the seedling raising box 2 hits, the scraper 23 is smoothly and reliably rotated upward to prevent the seedling raising box 2 from getting caught.
Even if the seedling raising boxes 2 with different heights are transferred, the seedling raising boxes 2
This has the effect of preventing the object from getting caught.

[Brief explanation of the drawing]

FIG. 1 is a side view of the entire device, FIG. 2 is a side view of the main parts, and FIG. 3 is a side view of the main parts. Explanation of symbols, 1...transfer conveyor, 2...seedling box, 3...rear side, 4...front side, 5...support leg, 6...
...Soil supply device, 7...Soil supply hopper, 8...
...Feeding belt, 9...Soil supply amount adjustment device, 10...
...Bed soil, 11... Rotating brush, 12... Free roller, 13... Irrigation nozzle, 14... Seed feeding device, 15... Hopper, 16... Seed feeding roll, 17... Motor, 18... Covering soil feeding device,
19...Hopper, 20...Feeding belt, 21...
... Soil supply amount adjustment device, 22 ... Sieved soil for covering soil, 2
3... Scraper, 24... Upper plate, 25... Lower plate, 26... Rotating shaft, 27... Frame, 28...
... Support plate, 29 ... Rear end edge, 30 ... Guide plate, 3
1... Front end portion, 32... Guide roll, 33...
Shaft, 34... Sprocket, 35... Chain, 3
6... Rapid feed drive roll, 37... Axis, 38...
Sprocket, 39... Sprocket, 40...
Chain, 41...Gap, 42...Fast forward roll,
43... Chain, 46... Rear end.

Claims (1)

[Scope of utility model registration request] Long transfer conveyor 1 before and after transferring seedling boxes 2
and a soil covering supply device 18 provided above the transfer conveyor 1, and a soil covering device 18 provided above the transfer conveyor 1 on the front side 4 of the soil covering supply device 18 to scrape away the covering soil etc. accumulated on the edge of the seedling raising box 2. In the seeding device for seedling boxes, which is provided with a scraper 23 for dropping, the transfer conveyor 1 is provided with a fast-feeding device for quickly transporting the seedling boxes 2, which have been covered with soil by the soil covering supply device 18, and the scraper 23 has an L-shape when viewed from the side. The shape is such that it is rotatable between a downward rotating position facing the movement locus of the seedling raising box 2 and an upward rotating position facing the moving trajectory of the seedling raising box 2, and a front end 31 of the seedling raising box 2 on the rear surface. A seedling box seeding device is provided with a guide plate 30 that abuts against, and the downward rotation of the scraper 23 is performed within a gap 41 formed between the preceding seedling growing box 2 and the succeeding seedling growing box 2 by the rapid forwarding device. Earth-falling device.