JPH0159845B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a seeding machine for sowing seeds in fixed quantities, particularly to a seeding machine used for row sowing.

For example, a seeding machine installed in a seedling seeding device receives seeds sent out from a feeding roll at the bottom of a seed hopper with a seeding roll that has many feeding grooves on the outer periphery. It is configured to rotate until the seedling box rotates until the seeds are sown on the bed soil inside the seedling nursery box.

In conventional seeding rolls, the feeding grooves on the roll surface are simply recesses that store the seeds, and guide plates installed approximately half way around the outer circumference of the seeding roll prevent the seeds from falling midway while transporting them to the lower level. ing.

With this type of seeding roll, if the seeds are damp or have water on them, they may stick to the feeding groove and not fall naturally, making it impossible to sow a certain amount of seed and also causing plant loss. There is.

In view of such conventional problems, the present invention provides a plunger that can freely move into and out of the feeding groove in the sowing roll, and uses this plunger to forcibly push out the seeds stored in the feeding groove at the time of sowing. The purpose of the present invention is to provide a seeding machine that enables more complete seeding.

A feature of the present invention for achieving this purpose is that a large number of feeding grooves 65 capable of storing seeds C are formed on the outer periphery of the sowing roll 31 at equal intervals in the circumferential direction, and these feeding grooves 65 are arranged from approximately upper to lower A guide plate 76 that prevents the stored seeds C from falling when rotated to
A plunger 67 for pushing out the stored seeds C when the feeding groove 65 rotates substantially downward in the seeding roll 31 is provided so as to be movable in the radial direction of the seeding roll so as to move into and out of the feeding groove 65. 31, the feeding groove 65 and the plunger 67 are formed long in the axial direction of the seeding roll, and the seeding roll 31
A seeding machine is provided with a cam member 71 having a cam groove 74 on both left and right sides of which a shaft portion 67a protruding from both left and right ends of a plunger 67 is slidably engaged. A pair of side plates 69 are fixed to the left and right ends of the seeding roll 31, and a plunger shaft 67a is attached to the left and right side plates 69 so as to be movable in the radial direction of the seeding roll. A long hole 73 is formed through the cam groove 7 of the cam member 71.
4 is that the plunger shaft portion 67a is formed so as to be able to be pushed in a radially outward direction of the seeding roll.

Embodiments of the present invention will be described below with reference to the drawings.

FIG. 1 shows the entire seedling-raising seeding device 1, and the seeding device 1 is roughly divided into a seedling-raising box transfer mechanism 3 that reciprocates the seedling-raising box 2 and can be switched between forward and reverse directions, and a seedling-raising box transfer mechanism 3 that supports this transfer mechanism 3. The support frame 4 that is placed on the support frame 4, the soil-entering machine 6, the irrigation machine 7, and the seeding machine 8 that are placed on the support frame 4 and straddle the seedling box transfer path 5 of the transfer mechanism 3, and Placed soil leveling machine 9
and a holding device 10 for the seedling raising box 2.

The support frame 4 has two parallel U-shaped cross-sectional frames 11 and a plurality of support legs 12.
A motor section 13 of the transfer mechanism 3 is attached to a support leg 12 near the seeding machine 8.

The transfer mechanism 3 includes the motor section 13 and the frame 1.
A plurality of rotary shafts 17 are pivotally supported at intervals of 1.
and a roller 14 provided on this rotating shaft 17,
It consists of a sprocket 15, a chain 16, etc. that transmit power from the motor section 13 to the rotating shaft 17. These sprocket 15 and chain 1
6 etc. are housed in a groove in one frame 11 having a U-shaped cross section.

The transfer mechanism 3 is of a roller conveyor type in order to perform normal forward and reverse rotation, and is configured to drive all rollers 14, but is configured to drive only one roller by wrapping a belt around it. Also good.

The soil-entering machine 6 is capable of supplying bed soil and covering soil, and is connected to a belt conveyor 19 parallel to the transfer path 5.
and a hopper 20 above it, and the belt conveyor 19 is connected from the transfer mechanism 3 to the power transmission means 18.
It is driven in synchronization with the seedling raising box 2 via the seedling box 2 or by its own drive mechanism.

When supplying bed soil, the seedling raising box 2 is moved in the direction of arrow A to supply the bed soil, and then the surface of the bed soil is leveled with the soil leveling machine 9. When supplying covering soil, the seedling raising box 2 is moved in the direction of arrow B. The soil leveling machine 9 is evacuated upward at this time.

A holding device 10 is disposed inside and in front of the earth-penetrating machine 6, respectively. This holding device 10 has a rotating shaft 1 at the tip of an arm 80 supported by a rotating shaft 17.
7 and the roller 14, and is configured to be driven by the power from the transfer mechanism 3 via the power transmission means 81, and the roller 14' is the same as the roller 14. It can rotate in the opposite direction to 14 and come into contact with the upper surfaces of the left and right edges of the seedling raising box 2, and maintains the transfer posture so that the seedling raising box that is being supplied with bed soil does not tilt due to the bed soil, This allows for transportation at accurate speeds. This holding device 10 may be placed before and after the sowing machine 8, or inside it.

The soil leveling machine 9 located behind the soil-filling machine 6 has two vertical shaft brushes 82 that are in sliding contact with the bed soil in the seedling nursery box 2 over the entire width and are arranged in an overlapping state so as to be rotatable around the vertical shaft. The arm 86 is provided with a vertical axis brush mechanism 84 configured to drive a motor 82 with a motor 83, and a horizontal axis brush 85 located at the rear thereof and rotated around a horizontal axis by power from the transfer mechanism 3. A horizontal brush mechanism 87 is provided. This soil leveling machine 9 uses two vertical shaft brushes 82 to level the surface of the bed soil substantially flat from corner to corner, and uses a horizontal shaft brush 85 to level the soil more completely.

The irrigation machine 7 has two sets of front and rear brackets 21, 21 attached to the frame 11, and two water supply pipes 22, 21, respectively.
22 are supported, and a pipe 23 connected to these two water supply pipes 22 is connected to a water supply pump 24, and both pipes 23 are provided with a pressure gauge and a pressure gauge. The irrigation machine 7 sprinkles water from the water supply pipe 22 to the seedling box 2
Supply the soil almost uniformly to the bed soil inside. This irrigation device 7 may have the pipe 23 connected to a water pipe, or may have only one set of water supply pipes 22 if the amount of water to be irrigated is small.

The seeding machine 8 includes an outer frame 26 fixed to the frame 11, an inner frame 27 arranged vertically movably within the outer frame 26, a seed hopper 28, and a feed roll 29 arranged on the outer frame 26.
an upper frame 30 supporting
2 and surplus paddy discharge body 33, and the seeding roll 3
1, a rotating brush 32, a surplus paddy discharge body 33, a drive mechanism 34 for driving the feed roll 29, etc. are provided. The outer frame 26 is formed of two side plates, and is open at the front, rear, top and bottom.

The seeding machine 8 is operated when the seedling raising box 2 is transferred in the direction of arrow B. Therefore, when supplying bed soil and watering, the frame 27 is raised upwards, and the seeding roll 31, rotating brush 32 and surplus paddy are discharged. body 3
Move 3 upwards. The pivot point of the inner frame 27 is a support shaft 35 supported by the outer frame 26.

Sprockets 37, 38, 39, and 40 of a drive mechanism 34 are provided on each shaft of the support shaft 35, sowing roll 31, rotating brush 32, and surplus paddy discharge body 33, and a chain 41 is wound around these. Tension is applied to the chain 41 by a telesion sprocket 42. Then, by the driving force from the sprocket 37, the sowing roll 31, the rotating brush 32 and the surplus paddy discharge body 33
are driven synchronously.

A gear 44 is provided at the end of the support shaft 35 that protrudes to the outside of the outer frame 26.
It is meshed with a gear 45 provided on a rotating shaft 43 provided on the outer surface of 6. A sprocket 46 is provided on the rotating shaft 43, and power is transmitted from the motor section 13 via a chain 47, sprockets 48, 49, and a chain 50.

Further, a sprocket 52 is provided on the rotating shaft 43, and a chain 55 is wound between the sprocket 52 and the sprocket 54 provided on the shaft 53 of the feed roll 29, and a chain 55 is wound around the sprocket 52, which is connected to a drive system different from the drive system of the seeding roll 31. The feed roll 29 is rotated by the rotation of the feed roll 29.

The chain 55 is also wound around a pulley 59 (or a sprocket) on a support shaft 58 that is fixedly supported on the upper surface of the outer frame 26 via a bracket 57, and a tension lever provided on the support shaft 58. Tension is applied by 60.

The upper frame 30 is rotatable about a support shaft 58, and is rotated clockwise in FIG. 2 to remove seeds from the seed hopper 28 and repair and inspect the interior of the lower frame 26.

As shown in FIGS. 2 to 5, the seeding roll 31 has a large number of feeding grooves 65 formed at equal intervals in the circumferential direction on its outer periphery. While accumulating the seeds C that are coming, the seeds are stored in the feeding groove 65.

Each feeding groove 65 is provided inside this seeding roll 31.
A plunger 67 is provided so as to be slidable in the radial direction of the seeding roll.
The seeding roll 31 has two side plates 69 on the roll shaft 68.
are fixed at intervals, a substantially fan-shaped roll body 70 is arranged and fixed in a circle with gaps in the circumferential direction between the side plates 69, and a plunger 67 is arranged between each side plate, and a feeding groove 65 is formed. The roll shaft 68 is supported by a pair of left and right cam members 71 fixed to the outer frame 26 via bearings 72. The seeding roll 31, the feeding groove 65, and the plunger 67 are formed long in the axial direction of the seeding roll, so that seeds can be sown in rows.

The plunger 67 has a wall thickness smaller than the groove width of the feeding groove 65 and has a uniform thickness over the entire surface, and has a shaft portion 67a at both ends, and this shaft 67a passes through the long hole 73 of the side plate 69 in the radial direction of the seeding roll. It is movable and inserted into cam grooves 74 formed on the inner surface of cam members 71 provided on both left and right sides of the seeding roll 31 .

The cam groove 74 has a circular shape that is concentric with the roll shaft 68 over approximately three-quarters of the circumference, but bulges 74a radially outward at the lower part, and when the seeding roll 31 rotates, the plunger 67 moves toward the lower part. When it reaches the position, it is moved radially outward and projected into the feeding groove 65. The shaft portion 67a of the plunger 67 has a bulging portion 74a.
When it is located outside, it retreats from the feeding groove 65 and enters the recessed state. That is, the cam groove 74 is formed with a cam surface that pushes the plunger shaft portion 67a radially inward and radially outward of the seeding roll.

Reference numeral 76 denotes an arcuate guide plate that is in contact with the outer circumferential surface of the seeding roll 31, and is always pressed toward the seeding roll 31 by a spring 77. This prevents the stored seeds C from falling naturally, and the plunger 67
The position E where the bulging portion 74a begins to protrude into the feeding groove 65 is the lower end 76a. Therefore, the seeds C start to naturally fall from the time when the feeding groove 65 reaches the upper end of the guide plate 76, and almost at the same time, the seeds C are pushed out by the plunger 67, and the seeds C are pushed out from the feeding groove 65.
When it reaches just below the roll shaft 68, the plunger 67 reaches its maximum protrusion state, and all of the stored seeds C are completely pushed out.

By moving in and out, the plunger 67 can scrape off dirt and the like adhering to the feed-out groove 65, and prevent the storage of seeds in the feed-out groove 65 from being damaged due to adhesion of dust. Can be done.

Note that the seeding machine of the present invention is not limited to use for raising seedlings, but can also be applied to, for example, a tractor-mounted seeding device.

According to the present invention detailed above, the seeding roll 31
A plunger 67 that can freely move in and out of the feeding groove 65.
Therefore, when the feeding groove 65 rotates from the upper side to the lower side and the seed fall prevention by the guide plate 76 is released, the seeds C naturally fall from the feeding groove 65 and at the same time, the plunger 67 moves into the feeding groove 65. Since the seeds are pushed out, even if the seeds are wet or have water on them, they can be sown almost completely without leaving any residue, making it possible to sow quantitatively and without any defects. . especially,
Since the plunger 67 is formed to have a wall thickness smaller than the groove width of the feeding groove 65 and a substantially uniform thickness over the entire surface, there is a large gap between the plunger 67 and the sowing roll 31 where dirt may enter even if the plunger 67 enters or retracts from the feeding groove 65. The side plate 69 has long holes 73 at both left and right ends of the seeding roll 31.
is fixed, and the shaft portion 67a of the plunger 67 provided inside the seeding roll 31 passes through the elongated hole 73. Therefore, the seeding roll 31, multiple plungers 67, and two side plates 69 can be assembled as one unit. The cam groove 74 of the cam member 71 with which the plunger shaft portion 67a engages can also push the shaft portion 67a in the radial direction of the seeding roll. Therefore, the plunger 67 can be moved in and out without providing an extrusion sprocket or the like, and the structure can be simplified.

[Brief explanation of drawings]

The drawings show an embodiment of the present invention, and FIG. 1 is a front view of the seedling seeding device incorporated into the seedling seeding device, FIG. 2 is a cross-sectional front view of the seeding machine, and FIG. 3 is a partially cross-sectional side view of FIG. 2. Figure 4 is a cross-sectional view of the seeding roll, and Figure 5 is a cross-sectional view of the seeding roll.
It is a sectional view taken along the - line in the figure. 1... Seeding device for seedling raising, 8... Seeding machine, 28...
... Seed hopper, 29 ... Feeding roll, 31 ... Seeding roll, 32 ... Rotating brush, 65 ... Feeding groove, 66 ... Guide plate, 67 ... Plunger, 7
DESCRIPTION OF SYMBOLS 1...Cam member, 74...Cam groove, 74a...Bulging part, 76...Guide plate.

Claims (1)

[Claims] 1. A large number of feeding grooves 65 capable of storing seeds C are formed on the outer periphery of the sowing roll 31 at equal intervals in the circumferential direction, and the seeds stored while the feeding grooves 65 rotate from approximately upper to lower. A guide plate 76 is provided to prevent seeds C from falling, and the diameter of the seeding roll is adjusted so that a plunger 67 that pushes out stored seeds C can be moved into and out of the feeding groove 65 when the feeding groove 65 rotates substantially downward in the seeding roll 31. The sowing roll 31, the feeding groove 65, and the plunger 67 are formed to be long in the axial direction of the sowing roll, and a shaft portion 67a protruding from the left and right ends of the plunger 67 slides on both left and right sides of the sowing roll 31. In a seeding machine equipped with a cam member 71 having a cam groove 74 that engages freely, the plunger 67 is formed to have a wall thickness smaller than the width of the feeding groove 65 and a substantially uniform thickness over the entire surface, and the plunger 67 is formed to have a substantially uniform thickness over the entire surface. A pair of side plates 69 are provided at both left and right ends.
is fixed to the left and right side plates 69, and a long hole 73 is formed in the left and right side plates 69 to allow the plunger shaft 67a to move freely in the radial direction of the seeding roll. A seeding machine characterized in that it is configured to be movable.