JPS6314596Y2 - - Google Patents

Description

[Detailed description of the invention] This invention relates to a belt tensioning device for a flat belt used for intermittent vertical feeding of seedlings in a rice transplanter, which has both a belt tensioner function to scrape off soil and other substances adhering to the belt and a belt guide function.

The conventional flat belt for intermittent vertical feeding of seedlings in rice transplanters is configured to intermittently vertically feed the pine seedlings on the seedling platform using a flat belt installed on the bottom of the seedling platform. Because it rotates while making contact, pine seedbed soil tends to spill onto the flat belt, and muddy soil scattered from the rice fields tends to adhere to the flat belt. There is a problem in that particles such as the like adhere to the rolls on the driving side or the driven side, damaging the belt or the rolls and causing trouble in driving the flat belt.

Therefore, the above problem can be solved by attaching a scraper for scraping off soil etc. attached to the flat belt to the above-mentioned intermittent vertical feeding device for seedlings using the flat belt, but flat belts for intermittent vertical feeding of seedlings are generally The scraper is installed using a narrow space near the front end of the seedling stand in the direction of seedling feeding, and the roll diameter is small and the distance between the roll cores is short, so installing the scraper separately from the existing belt tension will make the structure more difficult. This becomes unacceptably complicated, and there arises an inconvenience in that adjustments such as gap management are required.

The present invention has been invented in view of the above-mentioned circumstances, and the belt contact part of the belt tensioner is
The belt is integrally formed with a discharge section that scrapes off soil adhering to the belt as the belt rotates and guides the scraped soil outward, and a belt guide section that guides both sides of the belt in the width direction. This allows the belt tensioner to simultaneously scrape off soil adhering to the belt and guide the belt every time the seedlings are fed out, making it possible to extremely simplify the structure while completely eliminating the need for troublesome operations such as gap management.
Furthermore, the present invention aims to provide a belt tensioning device for a flat belt for intermittent vertical feeding of seedlings in a rice transplanter, which can reliably prevent damage to the belt and rolls caused by the adhesion of soil, etc., and always perform the intermittent vertical feeding function of mat seedlings smoothly and accurately.

To explain the configuration of the present invention with reference to an embodiment shown in the drawings, 1 is a rice transplanter;
An engine 2 is mounted on the front part of the aircraft, and aircraft propulsion wheels 4, 4 are mounted on both sides via swing cases 3, 3 so as to be able to move up and down, and a float-like field slide is mounted below. 5 is equipped,
It is designed to be able to slide while leveling the rice field. Reference numeral 6 denotes a seedling platform, and the seedling platform 6 is located above the operation handle 7, and is installed in a manner that is low in the front and high in the rear, and is capable of reciprocating from side to side via a left and right reciprocating drive mechanism 8. Reference numeral 9 denotes a seedling planting device, and a planting claw 10 of the seedling planting device 9 sequentially divides the seedlings for unit planting from a seedling take-out port 11 provided at the lower end of the slope of the seedling platform 6. It acts to be planted in the rice field.

Reference numeral 12 denotes a seedling holding body provided at the lower end of the slope of the seedling take-out side of the seedling table 6, and the seedling holding body 12 is horizontally suspended above the seedling table 6 at an appropriate distance.
It is designed to guide the seedling leaves and stems of pine seedling A in a backward-slanting manner. 12a is an apron.

Reference numeral 13 denotes a seedling intermittent vertical feeding device located near the lower end of the slope of the seedling platform 6, and the seedling intermittent vertical feeding device 13 is driven by a drive roller 14 pivotally supported on the back side of the seedling platform 6. It consists of a driven roller 15 and a flat belt 16 suspended between these rollers 14 and 15. Although not shown, the drive roller 14 is interlocked with the drive side of the machine body, and is rotated in the direction of the arrow in FIG. This functions to intermittently feed out the pine seedlings A on the seedling stand 6 toward the seedling take-out side.

On the other hand, 17 is a belt tensioning device of the intermittent vertical feeding device 13 for seedlings, and the belt tensioning device 17 is constructed as follows. That is, reference numeral 18 is a tension arm whose base end is pivoted to a bracket 19 fixed to the back side of the bottom plate 6a of the seedling stand 6 so as to be movable up and down. By pressing the non-feeding side 16a of the flat belt 16 downward from the back side, the flat belt 1
6 is always biased in the tension direction.
As shown in FIG. 4, the belt contacting portion of the tension arm 18 has an apex a at the middle portion in the width direction of the belt 16 in plan view, and the apex a projects toward the upper side in the moving direction of the non-feeding side 16a. The belt 16 is bent into a V-shape, and due to the V-shape, soil and other particles attached to the belt 16 are removed from the belt contact area.
A scraping and discharge action section 18a is configured. Reference numerals 21 and 21 denote belt guide portions provided by bending the left and right ends of the discharge action portion 18a downward, respectively, and the belt guide portions 21 and 21 guide the left and right ends of the flat belt 16 in a spliced state. It is something to do.

In this embodiment, the soil etc. discharge action section 18a is set to V
Although the case where it is formed in the shape of a letter has been described, the shape is not limited to a V-shape.

Note that FIG. 7 shows another embodiment in which the belt contacting part of the tension arm 18' is located below the non-feeding side 16a of the flat belt 16, and the tension bullet 20 is used to Feed action side 16
A is pressed upward.

Next, the operation of the present invention constructed as described above will be explained. Pine seedling A currently placed on the seedling table 6
The leading edges of the seedlings in the feeding direction are received by the apron 12a, and each plant is scraped and divided one by one by the vertically moving planting claws 10, and successively planted in the field. When the division in one direction is completed for one row, the drive roller 14 rotates and the flat belt 16 is rotated in the direction of the arrow in FIG. 3 until the front end surface of each pine seedling A comes into contact with the apron 12a. Pay it out to the side where the seedlings are taken out. In this way, the planting work is continued until the pine seedlings on the seedling stand 6 are exhausted.

In this case, the belt contacting part of the tension arm 18 constantly urges the flat belt 16 in the tensioning direction by the tensioner 20 to prevent slips due to belt elongation, and the belt guides 21 and 21 Since the non-feeding side 16a is guided from both sides in an attached state, the flat belt 16 never comes off or shifts laterally, and the intermittent vertical feeding of pine seedlings by the flat belt 16 is always smooth and accurate. It will be done.

On the other hand, during the planting work, the bed soil of the pine seedlings A may collapse during the seedling reeling action and flow onto the flat belt 16 (particularly on the back side of the non-feeding side 16a), or the muddy soil scattered from the rice field may It is easy for the soil to adhere to the back side of the belt 16, but in such a case, as shown in FIG.
P... is automatically scraped each time it hits the mountain-shaped scraping and discharge action section 18a formed at the belt contact part of the tension arm 18 as the flat belt 16 rotates, and this scraping The removed soil clods P, P... are removed by the scraping and discharging section 18a.
They are sequentially guided to both left and right sides of the flat belt 16 along the inclined guide surface of the flat belt 16 and discharged outside the belt 16.
For this reason, the earth clods P, P... accumulated on the flat belt 16.
... will never adhere to or accumulate on the drive roller 14 or the driven roller 15 and cause damage to the flat belt 16 or the rollers 14, 15.

In addition, if the belt guide, belt tensioner, scraper, etc. are installed separately in a narrow space, the structure will become complicated and adjustments such as gap management will be required. As described above, since the above three functions can be performed simultaneously with a single member, the structure is extremely simple, and adjustments such as gap management are not required.

In summary, the present invention is a device in which pine seedlings are intermittently vertically fed by a belt provided on the bottom of a seedling stand, and a belt tensioner is provided to urge the belt in the direction of tension. The belt contacting part of the belt has a discharge action part that scrapes off soil etc. adhering to the belt as the belt rotates and guides and guides the scraped soil etc. to the outside of the belt, and Since it is integrally formed with the belt guide part that guides the both sides by attaching it, the belt tension simultaneously performs the action of scraping off the soil etc. adhering to the belt and the belt guide action for each action of feeding out the seedlings. Although the structure can be extremely simplified, it completely eliminates the need for cumbersome operations such as gap management and roller position adjustment that are required when the belt guide belt tensioner, scraper, etc. are provided separately. Furthermore, it is possible to reliably prevent damage to belts and rollers due to adhesion of soil, etc., and to always carry out the intermittent vertical feeding of pine seedlings smoothly and accurately.

[Brief explanation of the drawing]

The drawings show an embodiment of a belt tensioning device for a flat belt for intermittent vertical feeding of seedlings of a rice transplanter according to the present invention, and FIG. 1 is an overall side view of the rice transplanter equipped with the present invention, and FIG. is a partially cutaway plan view of the seedling stand, Figure 3 is a side view of the main part, Figure 4 is an enlarged perspective view of the main part, Figure 5 is a longitudinal sectional view of the main part, and Figure 6 is a cross-sectional view of the main part. An enlarged side view, FIG. 7 is a side view showing another embodiment. In the figure, 6 is a seedling stand, 16 is a flat belt, 18a is a discharge action part, 21, 21 is a belt guide part, and A is a pine seedling.

Claims (1)

[Scope of Claim for Utility Model Registration] (1) In a device in which pine seedlings are intermittently fed vertically by a belt provided on the bottom of the seedling stand, a belt tensioner is provided to urge the belt in the tension direction, The belt contacting part of the belt tension includes a discharge acting part that scrapes off soil etc. adhering to the belt as the belt rotates and guides the scraped soil etc. to the outside of the belt, and a belt. A belt tensioning device for a flat belt for intermittent vertical feeding of seedlings of a rice transplanter, characterized in that a belt guide portion is integrally formed to guide both sides in the width direction of the flat belt. (2) In the flat belt for intermittent vertical feeding of a rice transplanter according to claim 1 of the utility model registration claim, characterized in that the discharge action portion is formed in a V-shape that gradually expands in the direction of contact movement of the belt. Belt tensioning device.