JP6723599B2 - Scraping fork structure of feeding roll of seeding machine for nursery box - Google Patents

Description

The present invention is a seeding device for a seedling box seeding machine for sowing seeds such as paddy rice, and is inserted into a raking slit groove of a feeding roll that feeds seeds such as seeds, and is configured in a groove shape of the feeding roll. The present invention relates to a structure of a scraping fork for scraping out a foreign substance fitted in a seed feeding recess.

Conventionally, the technique regarding the seeding device of the seedling box seeding machine is known. This is like the technique described in Patent Document 1.
In the feeding roll of the conventional seeding machine for a rice seedling raising box, a technique of a scraping fork that fits into the slit groove of the dispensing roll and scrapes out the foreign matter fitted in the groove-shaped feeding recess of the dispensing roll is disclosed in Patent Document 1 16 as disclosed in FIG.

JP, 2010-119372, A

However, in the prior art, in the sweeping fork structure of the payout roll, when one sweeping fork is replaced when it is damaged, the sweeping fork mechanism, which is the entire assembly of the sweeping fork, is disassembled once. It was necessary to take out one scraping fork and replace it in the disassembled state.
In addition, in the conventional technique, it is necessary to prepare N+1 spacers interposed between the respective sweeping forks and N for the number N of the sweeping forks to be interposed between the sweeping forks. Of.

Also, as a procedure for assembling the sweeping fork mechanism, after temporarily assembling the sweeping fork mechanism, insert each of the sweeping forks into the slit groove of the feeding roll so that all the sweeping forks are in the slit groove. It is necessary to confirm that they have been fitted, and it takes time to assemble between the scraping fork mechanism and the feeding roll in order to assemble them one by one in the state of being assembled into the mechanism while aligning them with the slit grooves. It was.
The present invention is intended to solve such a problem of the conventional technology.

The problems to be solved by the present invention are as described above. Next, means for solving the problems will be described.

In Claim 1, in the raking fork mechanism which fits the raking fork into the raking slit groove of the feeding roll of the seeding machine for raising seedlings, and scrapes out the foreign matter fitted into the seed feeding concave portion of the feeding roll, said raking The fork mechanism has a structure in which a plurality of scraping forks are locked by a gap holding shaft and a retaining lock shaft, and a plurality of locking grooves for determining the positions of the plurality of scraping forks are formed in the space holding shaft. Then, the scraping fork fitted into the locking groove of the spacing shaft is prevented from coming off by engaging the retaining locking shaft.

According to a second aspect of the invention, in the raking fork structure of the feeding roll of the seedling raising seedling machine according to the first aspect, the raking fork is provided with an insertion fork portion fitted into the raking slit groove of the feeding roll, An engaging recess is provided near the insertion fork portion so as to be fitted into the engaging groove of the spacing shaft, and a retaining recess is provided at a position rearward of the retaining recess into which the retaining lock shaft is engaged. The parts, the locking recesses, and the retaining recesses are arranged vertically offset from each other.

According to a third aspect of the present invention, in the raking fork structure of the feeding roll of the seedling raising seedling machine according to the second aspect, a gripping portion for gripping the raking fork is provided rearward of the retaining recess of the raking fork. It was done.

The effects of the present invention are as follows.

According to the first aspect of the invention, even if one sweeping fork is replaced, it is not necessary to disassemble the entire sweeping fork mechanism, and the time required for disassembling and assembling the sweeping fork mechanism can be shortened as compared with the conventional case.

According to the second aspect of the present invention, the spacer loosely fitted to the outer circumference of the spacing shaft is not required to maintain the space between the adjacent sweeping forks, and the sweeping fork is assembled into the sweeping fork mechanism. Since man-hours can be shortened, it leads to cost reduction.

According to the third aspect, when the scraping fork mechanism is disassembled, it is possible to pull out the scraping fork for each sheet by gripping the gripping portion.

The whole perspective view of the seeding machine for seedling raising boxes for paddy rice. The side view of the part of the seeding device of the seeding machine for nursery boxes. Similarly, a rear view of the seeding device of the seedling box seeding machine. The side view of the state which inserts a delivery roll unit between the frame side plates of a seeding device. The right side view in the advancing direction of the nursery box of the delivery roll unit. Left side view in the moving direction of the nursery box of the feeding roll unit The rear view in the advancing direction of the nursery box of the delivery roll unit. The disassembled perspective view of a delivery roll unit. The whole rear view of the delivery roll. Sectional drawing which shows the shape of the slit groove which inserts the scraping fork in a delivery roll. FIG. 3 is a side view showing a state in which a gap holding shaft is attached to a delivery roll. The side view of the state which inserted the scraping fork with respect to the delivery roll. The side view of the state which inserted the slip-out prevention locking shaft with respect to the delivery roll and the scraping fork. The expanded side view of a scraping fork. The rear view of a space|interval maintenance shaft. The rear view of the retaining lock shaft.

Next, an embodiment for carrying out the present invention will be described with reference to the drawings.

In FIG. 1, the overall structure of the seeding device of the seedling box seeding machine for paddy rice will be described.

The seeding device of the seedling box seeding machine for paddy rice moves the seedling raising box at the time of sowing on the drive rail R for transporting the seedling raising box. A bed soil supply device A, a seeding device B, and a soil covering device C are fixedly arranged on the drive rail R in order along the moving direction F of the nursery box.
While the seedling raising box is being driven by the drive roll 5 and transferred on the drive rail R, the bed soil is fed into the seedling raising box by the bed soil supplying device A, and the leveling device E is placed on the floor soil. And then watering is performed by the watering device D, and then seeds are sowed by the sowing device B.
Furthermore, the soil covering device C is configured to cover the soil and the seeds so that the sowing operation is completed. H is a drive device for the soil supply device A.

On the drive rails R before and after the floor soil supply device A, a drive rail R is provided at a position in front of the floor soil supply device A and a drive of the floor soil supply device A that transmits power to the floor soil supply device A. A device H is arranged, and a leveling device E for leveling the soil surface and a watering device D are arranged in the rear part of the bed soil supplying device A.
In order to facilitate the maintenance of the raking fork mechanism G fitted into the raking slit groove of the feeding roll K, which constitutes the main part of the seeding device B, in the seeding device B of the seeding machine for seedling raising of the present invention. Related to the support structure.

1 to 8, the structure of the seeding device B and the feeding roll unit U in the seeding device B will be described in detail.
In the seeding device B, a seed hopper 18 is arranged at the upper part, and seed paddy, which is a seed of paddy rice to be sown, is put into the seed hopper 18. A shutter 40 is arranged below the seed hopper 18 as shown in FIG. 2, and a shutter operation unit 39 for opening and closing the shutter 40 is provided.
The seeds dropped from the shutter 40 fall into the space between the feeding roll K and the seed rotating brush 33 and move, and partly fall into the groove-shaped seed feeding concave portion 8 around the feeding roll K. To do.

Around the feeding roll K, there are formed groove-shaped seed feeding recesses 8 formed on the left and right at right angles to the moving direction F of the seedling raising box, and inside the groove-shaped seed feeding recesses 8. The seeds that have not been inserted and overflowed are scraped off by the seed rotating brush 33 rotating in the direction opposite to the rotation direction V of the feeding roll K as shown in FIG. , Is configured to return to the lower part of the seed hopper 18.

The seed hopper 18 is supported between the left and right frame side plates 4L and 4R forming the seeding device B, and a drive motor is fixedly installed inside the frame side plates 4L and 4R. Power is transmitted by a chain from the drive motor shaft of the drive motor to the counter sprocket 37 of the counter shaft 38 via the motor sprocket. A chain 70 is wound around the drive sprocket 34 of the feeding roll K from the counter sprocket 37 to transmit power.

As shown in FIG. 3, the drive sprocket 34 is bearing-supported between the sprocket support plate 41 and the frame side plate 4R by a hexagonal rotating cylinder shaft 11 which is an engaging rotating cylinder shaft.
That is, between the bearing 43 of the frame side plate 4R and the bearing 42 of the sprocket support plate 41, the hexagonal rotary cylinder shaft 11 which is the engaging rotary cylinder shaft is installed and supported by the bearing. The drive sprocket 34 is fixedly mounted on the outer periphery of and is rotatable.

Then, inside the hexagonal rotary cylinder shaft 11, a hexagonal rotary shaft 15 which is an engaging rotary shaft that can be pulled out by a rotary shaft pulling member 16 is fitted. The hexagonal rotary shaft 15 is inserted, and the tip end of the hexagonal rotary shaft 15 penetrates the hexagonal hole of the hexagonal rotary cylinder shaft 11 of the drive sprocket 34, and further, the roll side plates 17L and 17R constituting the feeding roll unit U. It can be inserted into the hexagonal hole of the cylindrical shaft 14a fitted in the inner ring of the hexagonal hole bearing 14.
The rotary shaft pullout member 16 is pressed to the outside of the hexagonal rotary cylinder shaft 11 and fixed by a fixing screw 16a. The rotary shaft pullout member 16 is driven together with the hexagonal rotary cylinder shaft 11 and the drive sprocket 34. When the sprocket 34 rotates, it also rotates.

The hexagonal rotary shaft 15 is pulled out from the cylindrical shaft 14a of the hexagonal hole bearing 14 by the rotary shaft pull-out member 16, so that the feeding roll unit U, the feeding roll K, and the drive sprocket 34 are connected to each other. Is released so that the feeding roll unit U can be taken out from the opening Q in front of the seeding device B.

The bearing state of the payout roll unit U can be easily released from the side where the rotary shaft drawout member 16 of the payout roll unit U is provided and the other side opposite thereto. When the fixing screw 16a is screwed and fixed to the rotary shaft pull-out member 16 by the fixing screw 16a via the biasing spring S, the fixing screw 16a is attached inside the hexagonal hole 11a of the inner diameter of the hexagonal rotary cylinder shaft 11. The biasing spring S presses the hexagonal rotary shaft 15 to press the entire feeding roll unit U toward the left roll side plate 17L, the left bearing portion is simply engaged, and the feeding roll K can rotate. The bearings are supported by.

Next, the configuration of the feeding roll unit U will be described with reference to FIGS.
The feeding roll unit U includes left and right roll side plates 17L and 17R, a feeding roll K integrally configured as a mechanism between them, a seed guide 35, and a plurality of raking forks 2 constituting a fork mechanism G. Has been done.
Conventionally, the seed guide guide 35 and the scraping fork 2 are installed on the frame side plates 4L and 4R of the seeding device B, and only the feeding roll K is rotatably supported by the frame side plates 4L and 4R.

In this configuration, the side plate plates 3L and 3R are arranged inside the frame side plates 4L and 4R, and the scraping fork 2 and the seed guide guide 35 for scraping out foreign matter are fixed between the side plate plates 3L and 3R. The delivery roll K is supported by bearings between the side plate 3L and 3R, and the delivery roll unit U is configured as a whole so that the delivery roll unit U can be taken out from the opening Q.
The opening Q of the seeding device B is formed between the frame side plates 4L and 4R, closed by the rear face plate 1 of the feeding roll unit U, and the rear face plate 10 is attached to the rear face plate of the seeding device B. The delivery roll unit U can be fixed.

The feeding roll unit U configured as described above can be detached from the opening Q on the front side of the seeding device B, the hexagonal rotary shaft 15 can be pulled out by the rotary shaft pulling member 16, and the drive sprocket 34 and the paying roll can be pulled out. It is configured so that the power transmission state to and from K can be disconnected/contacted.

The seed guide guide 35 constituting the feeding roll unit U is shown in FIGS. 2, 5, and 8 and has a semicircular cylindrical shape along the outer circumference of the feeding roll K. In addition, as shown in FIG. 14, the scraping fork 2 of the fork mechanism G includes an S-shaped plate, and the number of scraping slit grooves 9 of the pay-out roll K is the same as that of the spacing shaft 1 and the stopper. It is arranged between the locking shafts 6 so as to reach the width of the left and right roll side plates 17L and 17R. Each one of the scraping forks 2 is arranged so as to fit into the scraping slit groove 9 on the outer periphery of the feeding roll K.
Then, while the seed feeding operation is continued, when the foreign matter fitted in the groove-shaped seed feeding concave portion 8 does not fall from the groove-shaped seed feeding concave portion 8, the scraping slit groove 9 The foreign matter is scraped out by the scraping fork 2 passing through the inside.

In the pay-out roll K shown in FIG. 9, the raking slit groove 9 has a width of 7.15 mm and 40 holes are punched out, and the raking fork 2 has a width of 7.15 mm and 40 holes. However, the roll side plates 17L and 17R are fixedly installed as a set at the same intervals.

Next, the structure of the feeding roll K will be described.
On the surface of the feeding roll K, the seed feeding recesses 8 having a groove shape into which the seeds fit are formed in the same direction as the rotation axis of the feeding roll K in parallel with the generatrix W and at intervals of 6°. Has been drilled. The groove-shaped seed feeding recesses 8 are formed at intervals parallel to the generatrix W to form lateral groove groove-shaped seed feeding recesses 8 parallel to the busbar W direction on the outer peripheral surface of the feeding roll. .. The seed rotating brush 33 that sweeps back the seed paddy in the hopper is always in contact with the outer peripheral surface of the feeding roll and rotates.

Further, as shown in FIG. 10, the width gradually becomes narrower and the depth becomes shallower between the two or three left and right end portions of the 40 scraping slit grooves 9 provided in the periphery. It is configured to converge and disappear. This also makes it possible to configure the seeds so that they can easily enter the groove-shaped feeding recesses 8 and can easily fall at the falling portions.

According to this configuration, in the seeding device of the seedling box seeding machine, the feeding roll K that fits and holds a certain amount of seed in the groove-shaped seed feeding concave portion 8 and the seed feeding concave portion 8 having the groove groove shape are fitted. A seed guide guide 35 for guiding the seeds from the upper part to the lower part, and a scraping fork that fits in the scraping slit groove 9 formed on the outer periphery of the payout roll K and scrapes out the foreign matter fitted in the seed payout recess 8. 2 is integrally supported between the side plate plates 3L and 3R to form a payout roll unit U, and the payout roll unit U is detachable between the frame side plates 4L and 4R of the seeding device B.

Next, referring to FIG. 8 to FIG. 16, a specific description will be given of the sweeping fork mechanism G, the sweeping fork 2 that constitutes the sweeping fork mechanism G, the spacing holding shaft 1 that supports the sweeping fork 2, and the retaining locking shaft 6. To explain.
In the scraping fork mechanism G, which is fitted into the scraping slit groove 9 of the paying roll of the seeding machine for the nursery box and scrapes out the foreign matter fitted into the seed feeding concave portion 8 having the groove shape of the paying roll K, the scraping fork mechanism G G has a configuration in which a plurality of scraping forks 2 are locked by the spacing holding shaft 1 and the retaining locking shaft 6.
A plurality of locking grooves 1a for deciding the positions of the plurality of scraping forks 2 are formed in the space holding shaft 1. Further, the scraping fork 2 fitted into the locking groove 1a of the spacing shaft 1 is prevented from coming off by the removal locking shaft 6 fixed to the rear locking position.

Moreover, in the scraping fork structure of the payout roll of the seeding machine for raising seedlings, the raking fork 2 projects the insertion fork part 2c fitted into the raking slit groove 9 of the payout roll K, and near the insertion fork part 2c. A locking recess 2a that fits into the locking groove 1a of the spacing shaft 1 is provided, and a retaining recess 2b into which the retaining locking shaft 6 is fitted is provided at a position rearward of the locking recess 2a.

Further, the insertion fork portion 2c, the locking recess 2a, and the retaining recess 2b are arranged vertically offset.
Further, in the scraping fork structure of the feeding roll, a gripping portion 2d for gripping the scraping fork 2 is provided behind the slip-out preventing recess 2b of the scraping fork 2.

The interval holding shaft 1 is composed of a shaft having a diameter of 12 mm, and has a locking groove 1a into which the raking fork 2 is fitted and inserted at a pitch of 7.35 mm which is the same as the pitch of the raking slit groove 9 of the feeding roll K. It is drilled. The width of the locking groove 1a is 1.3 mm, the depth is 1.5 mm, and the number is 40.
As shown in FIG. 8, M6 screw holes 1b are provided at both ends of the spacing shaft 1 so that they can be screwed by a fixing screw 1c which is inserted from the outside of the side plate 3 constituting the feeding roll unit U.

In addition to the spacing shaft 1, a retaining lock shaft 6 having a diameter of 12 mm is provided. The retaining lock shaft 6 has the same overall length as the spacing shaft 1, is provided with M6 screw holes 6b at both ends, and is fixed to the feeding roll unit U by screwing fixing screws 6c from the outside of the side plate 3. doing.

The scraping fork 2 is provided with an insertion fork portion 2c that is a fitting portion into the scraping slit groove 9 forward. A U-shaped groove is formed at a position above the base of the insertion fork portion 2c so that the locking recess 2a of the spacing shaft 1 is opened forward. A retaining recess 2b for inserting the retaining lock shaft 6 is provided at a rear upper position of the retaining recess 2a. The retaining recess 2b is a U-shaped groove that is open rearward. The scraping fork 2 is a plate-shaped component, and is prepared in the same number as the scraping slit grooves 9 of the feeding roll K.
The spacing shaft 1 has a shaft having a diameter of 12 mm and a plurality of locking grooves 1a formed at regular intervals. The retaining lock shaft 6 also has a diameter of 12 mm, but a groove corresponding to the lock groove 1a is not formed, and is configured by a linear shaft having an outer diameter of 12 mm.

Further, the scraping fork 2 is detached one by one with the grip portion 2d being provided rearward above the slip-out preventing recess 2b and the slip-out preventing shaft 6 being removed. Is configured to be able to.

Next, a procedure for assembling the scraping fork mechanism G will be described.
First, as shown in FIG. 11, with the delivery roll K mounted on the left and right side plate plates 3 and 3 of the delivery roll unit U, the gap holding shaft 1 is inserted between the left and right side plate plates 3 and 3. Then, it is fixed at a predetermined position by the fixing screw 1c.

Next, as shown in FIG. 12, the insertion fork portion 2c at the tip of the scraping fork 2 is fitted into the scraping slit groove 9 of the feeding roll K, and the locking recess 2a is locked by the locking groove 1a of the spacing shaft 1. The scraping fork 2 is inserted to a position where the scraping fork 2 is fitted and locked. This is performed for 40 scraping forks 2.

Next, as shown in FIG. 13, after all the scraping forks 2 can be inserted into all the locking grooves 1a of the spacing shaft 1, the slip-out preventing recesses 2b at the rear part of the scraping forks 2 are prevented from coming off. The locking shaft 6 is laterally inserted through the retaining recesses 2b of the 40 scraping forks 2. This prevents the scraping fork 2 from coming out backward.

Next, attachment/detachment of the scraping fork 2 for maintenance will be described.
When taking out one of the scraping forks 2 in the middle portion, the fixing screws 6c at both ends of the retaining lock shaft 6 are loosened, and the retaining lock shaft 6 is removed. With the retaining lock shaft 6 removed, grasp the gripping portion 2d of the scraping fork 2 to be replaced, and pull out the scraping fork 2 toward the rear side. A new scratching fork 2 is inserted in place of the pulled-out scratching fork 2. The retaining locking shaft 6 is reinserted, and the screw 6c is screwed into the screw hole 6b of the end M6 to fix the entire scraping fork mechanism G.
In this way, it is possible to easily take out only one scraping fork 2 from the scraping fork mechanism G.

A bed soil supply device B seeding device C soil cover device D watering device E leveling device F moving direction of seedling raising box G fork mechanism K feeding roll R drive rail Q opening S bias spring U feeding roll unit V rotating direction of feeding roll W Busbar 2 Scraping fork 3L/3R Side plate 4L/4R Frame side plate 5 Drive roll 8 Groove shape feeding recess 8a Front chamfering process 8b Rear chamfering part 9 Scratch slit groove 11 Hexagonal rotary cylinder shaft 14 Hexagonal hole bearing 15 Hexagonal rotary shaft 16 Rotary shaft draw-out member 17 Roll side plate 18 Seed hopper 32 Drive motor shaft 33 Seed rotary brush 34 Drive sprocket 35 Seed guide guide 36 Motor sprocket 37 Counter sprocket 38 Counter shaft 39 Shutter operation part 40 Shutter 41 Sprocket support plate 70 Chain

Claims (3)

By inserting a scraping fork into the scraping slit groove of the payout roll of the seeding box for seedling raising box, in a raking fork mechanism for raking out the foreign matter fitted in the seed feeding concave portion of the payout roll,
The scraping fork mechanism has a structure in which a plurality of scraping forks are locked by a gap holding shaft and a locking shaft.
A plurality of locking grooves for deciding the positions of the plurality of scraping forks are formed in the spacing shaft,
The raking fork of the feeding roll of the seeding box for seedling raising box is characterized in that the raking fork fitted in the locking groove of the interval holding shaft is prevented from coming off by engaging the locking locking shaft. Construction. In the raking fork structure of the feeding roll of the seeder for seedling raising box according to claim 1,
The scraping fork is provided with an insertion fork portion that fits into the scraping slit groove of the feeding roll,
A locking recess that fits into the locking groove of the spacing shaft is provided near the insertion fork.
A retaining recess is provided at a position rearward of the retaining recess into which the retaining lock shaft is fitted,
A scraping fork structure of a feeding roll of a seedling raising seedling machine, wherein the insertion fork portion, the locking concave portion and the pull-out preventing concave portion are arranged vertically offset from each other. In the raking fork structure of the feeding roll of the seedling raising seeder of claim 2,
A raking fork structure of a feeding roll of a seedling raising seedling machine, characterized in that a gripping portion for gripping the raking fork is provided rearward of the retaining recess of the raking fork.

Images