JPH0432899Y2 - - Google Patents

Description

[Detailed Description of the Invention] [Technical Field of the Invention] The present invention uses a seedling transfer belt that supplies a fixed amount of seedlings placed on the table toward the seedling outlet when the seedling table moves to the left and right ends. This invention relates to a seedling feeding device in a rice transplanter that is installed on the bottom plate of a table.

[Prior art] As a seedling feeding device of this type of rice transplanter, the upper and lower pulleys around which the seedling transfer belt is wound are conventionally formed wide in the width direction of the seedling transfer belt, and have V-grooves on both left and right sides. is provided, and this left and right V
The left and right V-belt parts formed on the back surface of the seedling transfer belt fit into the groove, and the back surface of the left and right V-grooves is in wide contact with the wide contact surface of the seedling transfer belt. It was generally formed as follows.

For this reason, mud that has entered the back of the wrapped seedling transfer belt adheres to the wide contact surface of the pulley, and as the outer diameter of the pulley gradually increases, the V-belt portion of the seedling transfer belt may slip. The seedling transfer belt stretched irregularly, making the vertical feeding of the seedlings unstable, resulting in the problem of large variations in the number of seedlings scraped per plant that were separated from the supplied seedlings. .

For example, in Utility Model Application Publication No. 59-90325,
It has been proposed to provide spaces here and there on the wide contact surface of the pulley so that it does not come into contact with the back of the seedling transfer belt, but simply providing only spaces reduces the contact area required for the pulley and prevents seedling transfer. Despite the disadvantage that the belt slips in the opposite direction, the above-mentioned problem still cannot be solved.

[Purpose of invention]

The present invention was devised to solve the problems in view of the above-mentioned conventional situation, and aims to improve the mud removal property of the pulley for winding the seedling transfer belt. It is an object of the present invention to provide a seedling feeding device for a rice transplanter that can prevent slips and stabilize the vertical feeding of seedlings.

[Structure of the idea]

The seedling supply device of the rice transplanter of the present invention that achieves the above object is arranged so that when the seedling table moves to the left and right ends, the seedlings to be placed are placed on the bottom plate of the seedling table that moves back and forth horizontally from side to side. In a seedling feeding device for a rice transplanter, the seedling feeding device is provided with a seedling transfer belt that supplies a certain amount of seedlings to a target, and a belt guide portion is provided on the circumferential surface of the upper and lower pulleys around which the seedling transfer belt is wound to prevent the seedling transfer belt from shifting laterally. , forming a ring part with protrusions on the outer peripheral edge thereof which is arranged in parallel with the belt guide part and has a large number of protrusions that bite into and engage with the back surface of the seedling transfer belt, and the ring part with protrusions and the belt guide part A space portion that does not contact the back surface of the seedling transfer belt is formed between the belts, and the width of the ring body portion with projections is made narrower than the width of the space portion.

〔Example〕

Hereinafter, the drawings showing one embodiment of the present invention will be described. First, as shown in FIG. 3, the seedling mounting table 1 on which seedlings are placed and moving back and forth horizontally from side to side is arranged in an oblique manner, and an opening cut out in the bottom plate of this seedling mounting table 1 is provided. Inside the belt 5, there is a seedling transfer belt 2 having a plurality of transfer protrusions 2a protruding from the surface thereof, which transfers and supplies a certain amount of seedlings toward the seedling take-out port when the seedling table 1 moves to the left and right ends. It is provided.

This seedling transfer belt 2 is wound between a drive pulley 3 disposed below the seedling table 1 and a driven pulley 4 disposed above.
is a drive shaft 6 rotatably supported on the seedling table 1;
Further, the driven pulleys 4 are respectively fixed to driven shafts 7 which are rotatably supported on the seedling mounting table 1.

Next, as shown in FIGS. 4 and 5, a ratchet gear 8 is fixed to the drive shaft 6, and a ratchet plate 9 adjacent to the side surface of the ratchet gear 8 is fitted onto the drive shaft 6 so as to freely rotate. It is normally energized by a spring to the solid line position in FIG. A check rod 10 is pivotally supported on one side of the ratchet plate 9 so as to be always engaged with the pawl of the ratchet gear 8, and a pin 11 fixed to the other side of the ratchet plate 9 is attached to a connecting plate 12a. The swing arm 1 is fitted into one of the elongated holes 13a formed in the connecting plate 12a, and the swing arm 1 is fitted into the other elongated hole 13a of the connecting plate 12a.
The swing arm 15 is fixed to a swing shaft 14 that is rotatably supported on the seedling mounting table 1 .

Also, the pin 1 is placed along the connecting plate 12a.
A seedling feeding stop plate 12b having a long hole 13a into which the seedlings 1 and 16 are fitted is provided, and one end thereof is connected via a wire 12c to a seedling feeding stop lever (not shown) provided above the back surface of the seedling mounting table 1. has been done.

Then, the seedling feeding stop plate 12b is pulled up by the operation of the seedling feeding stop lever, and by lifting the pin 11 upward, the swinging arm 15
By preventing the pin 11 from being actuated even by the vertical movement of the connecting plate 12a,
The sending of seedlings has started to stop.

The aforementioned swinging arm 15 moves integrally with the seedling mounting table 1 that moves horizontally in a reciprocating manner, so when the seedling mounting table 1 moves to the left and right ends, the swinging arm 15 moves to the left and right ends of the seedling mounting table 1. Camshaft 1 on the aircraft side at the moved position
The swinging arm 15 is kicked up by the cam 18 which rotates in the direction of the arrow about 7, and the swinging arm 15
By swinging to the dotted line position in FIG. The seedlings are fed vertically and the swinging arm 15 released from contact with the cam 18 returns to its original solid line position.

In the present invention, as shown in FIGS. 1 and 2, upper and lower pulleys 3 and 4 around which the seedling transfer belt 2 is wound are used to drive the seedling transfer belt 2 on both left and right sides and to prevent lateral slippage. A plurality of small-width protruding wheel body parts 20 are formed in the width direction between the V-groove parts 19 and 19 as belt guide parts provided in the belt guide part. A space portion 21 is formed that does not contact the back surface of the seedling transfer belt 2, and the outer peripheral edge of this wheel body 20 with protrusions is provided with a number of small holes that bite into the back surface of the seedling transfer belt 2 and engage with the seedling transfer belt 2. A protrusion is formed.

In addition, in the embodiment shown in FIG.
A thick wall portion 24 is formed at one location on the periphery of the partition wheel body portion 23, and a mounting bolt 25 for fixing the pulleys 3 and 4 to the shaft is provided in the thick wall portion 24. A mounting hole 26 into which a screw can be inserted is provided.

Furthermore, as shown in FIGS. 4 and 5, the driven shaft 7 to which the driven pulley 4 is fixed is arranged so as to be able to slide vertically with respect to the seedling table 1. The upper frame 2 is tightened by the tension springs 27, 27.
8 side, the driven pulley 4 side can move its position relative to the driving pulley 3 at a fixed position in response to the expansion and contraction of the seedling transfer belt 2, and at the same time, it can move the back side of the seedling transfer belt 2 on both sides. The ring body portion 20 with a protrusion provided on the pulley can be engaged by biting.

Further, as shown in FIG. 3, a transmission case 29 extending in the front-rear direction is disposed below the seedling mounting table 1, and behind this transmission case 29, a seedling holder 3 is provided.
A seedling planting rod 31 having a planting claw 30 at its tip is arranged opposite to the seedling extraction port 3, and the tip of the planting claw 30 of this seedling planting rod 31 is connected to the seedling extraction port of the seedling holder 33 and below. It is configured to move up and down in an elliptical trajectory 32 across the field to scrape and plant seedlings.

Therefore, in the present invention, mud that has entered the back side of the seedling transfer belt 2 is removed from a plurality of spaces adjacent in the width direction formed near the V-grooves 19, 19, which serve as belt guide parts on the pulley side. 21 improves mud shedding and prevents it from sticking to the pulley surface, and the pulley outer diameter gradually increases due to mud adhering to the wide contact surface unlike the conventional one.
It is possible to eliminate the defects that the V-groove of the seedling transfer belt slips or that the seedling transfer belt stretches irregularly. Moreover, the seedling transfer belt 2 wound between the driving pulley 3 and the driven pulley 4 has V-belt parts 22, 22 on the left and right sides of the back surface of the belt 2, which are connected to the pulleys 3, 4.
In addition to fitting into the V-grooves 19, 19 at both left and right ends of the side, the back surface between the V-belt parts 22, 22 is bitten and engaged by the plurality of protruding wheel parts 20, so that the pulley 3, Although a plurality of spaces 21 are formed adjacent to each other in the width direction on the 4th side, slipping of the seedling transfer belt 2 can be prevented, the vertical feeding of the seedlings by the seedling transfer belt 2 can be stabilized, and the number of seedlings to be scraped can be reduced. variation can be reduced.

[Effect of idea]

The seedling supply device of the rice transplanter of the present invention, which requires this, is arranged so that when the seedling table moves to the left and right ends, the seedlings to be placed are placed on the bottom plate of the seedling table that moves back and forth horizontally from side to side, toward the seedling outlet side. In a seedling feeding device for a rice transplanter that is equipped with a seedling transfer belt that supplies a constant amount of seedlings, a belt guide portion is provided on the circumferential surface of the upper and lower pulleys around which the seedling transfer belt is wound to prevent the seedling transfer belt from shifting laterally. A ring part with protrusions is formed on the outer peripheral edge of the belt guide part and has a large number of protrusions that bite into and engage with the back surface of the seedling transfer belt, and between the ring part with protrusions and the belt guide part. Since a space is formed that does not come into contact with the back side of the seedling transfer belt, and the width of the protruding wheel body is made narrower than the width of the space, mud and the like that have entered the back side of the seedling transfer belt are prevented. The plurality of spaces adjacent to each other in the width direction formed on the pulley side allow mud to be drained well, and it is possible to prevent mud from adhering to the pulley surface.

Moreover, despite the fact that a plurality of spaces adjacent to each other in the width direction are formed near the belt guide part on the pulley side, the seedling transfer belt has a belt guide part and a ring body with protrusions added to this belt guide part. Coupled with the biting engagement by the parts, slipping of the seedling transfer belt can be prevented. Therefore, the vertical feeding of the seedlings by the seedling transfer belt can be stabilized, and variations in the number of seedlings scraped per plant can be reduced.

[Brief explanation of the drawing]

The drawings show one embodiment of the invention,
Fig. 1 is a side cross-sectional view of a pulley, Fig. 2 is a cross-sectional view taken along the line X-X in Fig. 1, Fig. 3 is a side view of a rice transplanter, Fig. 4 is a front view showing an enlarged main part, and Fig. 5 is a side view showing an enlarged main part. 1... seedling placement table, 2... seedling transport belt, 3...
Driving pulley, 4... driven pulley, 19... V-groove portion, 20... protruding wheel portion, 22... space portion, 3
3...Seedling holder.

Claims (1)

[Scope of utility model registration request] A rice transplanter in which a seedling transfer belt is provided on the bottom plate of a seedling table that moves back and forth horizontally from side to side to supply a fixed amount of seedlings to be placed toward a seedling outlet when the seedling table moves to the left and right ends. In the seedling feeding device, the upper and lower pulleys around which the seedling transfer belt is wound are provided with:
A belt guide part is provided to prevent the seedling transfer belt from shifting laterally, and a ring body part with protrusions is formed on the outer peripheral edge of the belt guide part, which is arranged in parallel with the belt guide part and which bites into and engages with the back surface of the seedling transfer belt. , a space portion that does not contact the back surface of the seedling transfer belt is formed between the ring portion with projections and the belt guide portion, and the width of the ring portion with projections is made narrower than the width of the space portion. A seedling feeding device for a rice transplanter, which is characterized by: