JP2015047165A - Modular rice transplant unit - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a solution for providing a narrow row spacing for a rice transplanter.SOLUTION: A modular rice transplanter with a narrow row spacing comprises a rotating housing, a sealing arrangement, a seedling transplanter housing, a fork assembly, and a plunger. This seedling transplanter housing is disposed such that the seedling transplanter housing is laterally movable relative to the fork assembly and the plunger, so as to reduce a significant space.

Description

Preface to the specification The following specification specifically describes the present invention and the manner of carrying it out.

  The present invention relates to the field of seedling replanting, for example rice seedlings, to a planting unit used in seedling replanting and to a planting machine equipped with said planting device.

  Rice is grown in over 100 countries and is a staple food for over 50 percent of the world's population. About 90 percent of the cultivated area of rice is in Asia. In Asia, more than 60% of farmers have less than 2ha land ownership. Therefore, technology targeting a small land-owned area plays a very important role in developing countries. By mechanizing replanting work in rice cultivation, human labor has decreased and efficiency has improved. However, in Southeast Asia and parts of central China, mechanization was not successful. In these areas, Indica rice is mainly raised, and this rice requires a narrow row spacing replanting solution. However, the lack of a 20 Cm strip spacing option in current conventional mechanized replanting solutions is a major obstacle in large scale adoption.

  In conventional replanting devices, the clutch, bearing, and seal configurations within the housing do not allow for narrow streaking, i.e., streaking less than 25 cm. In order to change existing rice transplanters to meet the requirements of rice growers in this area, fundamental changes are needed. But so far this need has not been addressed. Furthermore, the result is a reduced planting width, resulting in a decrease in planting rate and thus machine productivity.

  The object underlying the present invention is to propose a solution to give the rice transplanter a narrow spacing, which preferably overcomes the above-mentioned problems.

  This object is achieved according to the invention by the teaching of claim 1. Further advantageous developments and further configurations of the invention result from the subsequent claims.

  According to one embodiment of the present invention, the need for a rice replanting unit capable of narrow strip spacing between 20 and 30 centimeters is achieved by reducing the distance between the two rotating cases. The planter housing is placed out of alignment or offset so that the seeder housing can be moved laterally with respect to the fork assembly and plunger to achieve a narrow strip spacing.

  According to another embodiment of the present invention, the seedling machine housing is such that the chain link connecting the plunger and the cam follower by the connector and the plunger is inserted over the reciprocating connector inside the seedling machine housing. Designed to.

  According to another embodiment of the present invention, the sealing arrangement is set such that the oil seal and the bearing are installed in the same plane so as to close the gap between the main housing and the rotating housing, and the connector is a plunger by means of a pin. It is a cam follower to connect with.

  Another embodiment of the present invention includes a hybrid clutch, a main housing, and a plurality of rotating housings, and the hybrid clutch is disposed in the main housing via a sprocket that is splined to bring the rotating housing closer to the center. Provided on the input shaft.

  The invention will be described in more detail with respect to the embodiments in the drawings.

It is a three-dimensional view of a modular rice transplanting unit. It is a bottom view of a modular rice transplanting unit. It is a top view of a modular rice transplanting unit. It is a side view of a modular rice transplanting unit. It is sectional drawing in the cross section AA shown by FIG. 4 of a modular rice transplanting unit. FIG. 5 is a cross-sectional view of a fork assembly through a narrowly spaced rice transplanter plunger showing a connector. FIG. 5 is a cross-sectional view of a fork assembly through a narrowly spaced rice transplanter plunger showing a cam link. 3 is a three-dimensional view of an alternative modular rice replanting unit I. FIG. It is sectional drawing of the hybrid clutch in the alternative modular rice transplanting unit I. FIG. 5 is a front view of an alternative planting housing with a bent fork and plunger assembly.

  The planting unit of the self-propelled riding rice transplanter is shown in FIG. 1 above. The planting unit receives force from the transmission of a machine (not shown in FIG. 1) on the input shaft 1 and this force is then transmitted to the planting shaft 3 via a chain (not shown). This chain and sprocket mechanism is present inside the housing 2. Three quarters of the space inside the housing 2 is filled with oil. Next, a force is transmitted from the planting shaft 3 to the two rotating casings 4. The rotating casing 4 rotates around the axis of the planting shaft 3.

  As shown in FIG. 1, two fork assemblies 5 are mounted on each rotating casing 4. A fork 6 present on the seed planter housing 7 picks up seedlings from a tray (not shown). When the fork assembly 5 extends down and the seedling is placed in the soil, the plunger 9 shown in FIG. 2 pushes the seedling into the soil. The plunger 9 is retracted to its original position by the movement of a follower (not shown) present in the seedling machine housing 7. The exact timing of the movement of the plunger 9 is controlled by a cam follower mechanism.

  A modular rice transplanter unit with narrow streak spacing is achieved by bringing the oil seal and ball bearings (present between the main housing and the rotating casing) in one plane and thus a considerable amount of space. To save money. These changes have led to the need for new sealing configurations. This seals the gap between the main housing and the rotating housing. This sealing configuration prevents dirt, water, and other impurities from entering the planting unit. Also, due to the reduction in space, it has become difficult to accommodate conventional shaft holding configurations. Instead, the shaft is held by five M5 bolts. As a result of these changes, the planting unit approached the centerline by making the seal and bearing parallel. The resulting reduction was a planting width of 40 mm. To further reduce streak spacing, the seeder housing is offset 20 mm laterally, keeping the fork and plunger assembly intact. Due to this offset, the chain link connecting the plunger and the cam follower must be changed. Conventional chain link configurations have been changed using connectors. The connector is a stainless steel part of specified diameter and length. This connector is used to connect the cam follower and the plunger.

  In addition, the cam follower and plunger can also be connected by a cam link, a new part designed to eliminate the chain link assembly. Chain links are difficult to assemble and are known to fail frequently in this area. Cam links eliminate all of these problems and use safety pins to restrain plunger movement. The cam link is a single rigid part that performs the same function as the connector described above.

  The present invention also provides an alternative method of achieving a 20 Cm-30 Cm strip spacing. One of the methods used is to use a new hybrid clutch. This new hybrid clutch is placed on the input shaft and functions as both a safety clutch and a planting clutch. This new hybrid clutch thus eliminates the planting clutch and provides space for the rotating case to approach the centerline. Thus, any value of spacing between 20 Cm and 30 Cm can be achieved.

  Another way to achieve streak reduction is to use an offset planting fork. This is used in conjunction with the above reconfiguration of bearings and seals. By using this, the planting housing need not be offset. Thus, in this solution, the planting unit can be switched from 22 Cm to 30 Cm by simply inverting the fork in the reverse direction.

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

  In FIG. 5, the reference number represents a bearing 10 and a spacer 12 that are partially seated on the central gear 11, as can be seen in this figure. This bearing 10 is placed as close as possible to the seal 13 present between the rotary casing 4 and the divided main housing 2.

  In order to correspond to the above embodiment, the spacer 12, the bush 14 existing inside the spacer 12, and the accompanying bracket 15 are redesigned. The bracket 15 is held by the five M5 bolts 16 as described above.

  The rotating casing 4 and the divided housing 2 are designed to accommodate the new seal 13 and provide sufficient clearance for the M5 bolt 16 during rotation.

  The second half of the rotating casing 4 and the cast insert 17 are designed to accommodate the new planting shaft 3 and cotter pin 18 design. In addition, therefore, the new design of the second half of the rotating casing 4 is made to accommodate a sufficient clearance for the fork assembly 5.

  The seed planter housing 7 is designed to achieve a 22 CM strip spacing. Accordingly, the associated bracket 8 is designed.

  The camshaft 19 is designed to provide accurate timing for the plunger mechanism 20 to reciprocate within the seedling machine housing 7.

  Inside the seedling machine housing 7, the compression spring 21 keeps the cam follower 24 in contact with the cam shaft 19 at all times. The cam follower 24 is connected to the plunger 9 by a chain link 22 through which the connector 23 shown in FIG. 6 passes. On the connector 23, the plunger 9 which reciprocates within the seedling plant housing 7 is inserted.

  Similarly, as shown in FIG. 7, the cam link 25 performs the work of the chain link 22 and uses the pin 26 to connect the cam follower 24 to the plunger 9. A safety pin 27 is used to suppress the lateral movement of the plunger 9.

  In FIG. 8, an alternative concept I of a modular rice replanting unit is shown. The distinguishing feature of this solution is the hybrid clutch 28 seated in the middle of the housing 2. The hybrid clutch 28 is on the input shaft 1.

  The hybrid clutch 28 (a combination of a safety clutch and a planting clutch) is described in detail in FIG. The input shaft 1 receives force from the engine of the transplanter. A safety clutch 28 is splined to this shaft. The safety clutch 35 transmits a force to the clutch pawl 29 attached to the spline 30 connected to the spline. Spline-coupled sprocket 30 is not fixed on input shaft 1. When a stone hits in this range or any other obstacle occurs, the safety clutch 35 is activated and no force is transmitted to the clutch pawl 29. The safety clutch 35 operates with respect to the safety spring 34. When the obstacle is removed, the safety spring 34 pushes the safety clutch 35 back. When the operator activates the planting clutch slot 32, the clutch pawl 29 moves to a task that is properly performed on the planting spring 33. As a result, the force is separated from the safety clutch 35. Therefore, in this case as well, power is not transmitted. This hybrid clutch 28 saves valuable space and helps bring the rotating casing 4 closer to the center.

  FIG. 10 shows another way of achieving a reduction in streak spacing by using an offset planting fork 36. By using the offset planting fork 36, the planting housing 38 need not be offset. Therefore, the only other change required in the planting unit 5 is the offset plunger 37. The new offset fork 36 is 30 Cm when inverted and achieves a streak spacing, and the offset plunger 37 is movable from one side to the other.

  While this invention has been described with respect to at least one embodiment, the present invention can be further modified within the spirit and scope of this disclosure. This application is therefore intended to cover any variations, uses, or adaptations of the invention using its general principles. Furthermore, this application is intended to cover such departures from the present disclosure, which are contained in known or customary practices in the art to which this invention pertains.

DESCRIPTION OF SYMBOLS 1 Input shaft 2 Housing, main housing 3 Planting shaft 4 Rotating casing 5 Fork assembly, planting unit 6 Fork 7 Seedling machine housing 8 Bracket 9 Plunger 10 Bearing 11 Central gear 12 Spacer 13 Seal 14 Bush 15 Bracket 16 M5 bolt 17 Cast insert 18 cotter pin 19 cam shaft 20 plunger mechanism 21 compression spring 22 chain link 23 connector 24 cam follower 25 cam link 26 pin 27 safety pin 28 hybrid clutch, safety clutch 29 clutch claw 30 sprocket 32 planting clutch insertion port 33 planting spring 34 safety spring 35 Safety clutch 36 Offset planting fork, offset fork 37 Offset plunger 3 Planting housing

Claims (6)

A rotating housing, a sealing configuration, a seeder housing, a fork assembly, a plunger, a cam follower, and a connector, wherein the seeder housing is placed offset, with respect to the fork assembly and the plunger Can move sideways,
Modular replanting unit.   A chain link that connects the plunger and the cam follower by the connector and the plunger is inserted into the connector that reciprocates within the seedling plant housing. The modular replanting unit according to claim 1. A rotating housing, a sealing configuration, a seedling machine housing, a fork assembly, a plunger, a cam follower, and a connector, wherein the sealing configuration includes an oil seal and a bearing between the main housing and the rotating housing. Provided to be installed in the same plane so as to close,
The modular replanting unit according to claim 1. A rotating housing, a sealing arrangement, a seeder housing, a fork assembly, a plunger, a cam follower, and a connector, wherein the connector is a cam follower connected to the plunger by a pin;
Modular replanting unit. A hybrid clutch, a main housing, and a plurality of rotating housings are further provided, and the hybrid clutch is disposed on the input shaft in the main housing via a sprocket that is splined so as to move about the rotating housing. Provided,
Modular replanting unit. A rotating housing, a sealing configuration, a seeder housing, a fork assembly, a plunger, a cam follower, and a connector, the seeder housing being fixed relative to the fork assembly and the plunger The seedling machine housing is arranged in a straight line to achieve streak spacing;
Modular replanting unit.

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