JP2000270631A - Transverse for rice transplanting machine - Google Patents

Abstract

PROBLEM TO BE SOLVED: To omit the troublesome lubricant oil-supplying operation as much as possible by avoiding the short oiling at the transverse feed driving shaft for the seedling platform. SOLUTION: The transverse feed driving shaft 17 is projected from the feed case 14 and the tubular part 25 is set to the seedling platform 16 so that it may rotatably contains the rotary top 24 having the convex part links to the spiral grooves carved on the circumference of the transverse feed driving shaft 17. The oil-supplying cup 29 for supplying lubricant oil to the spiral groove is arranged on the upper side of the transverse feed driving shaft 17 and the rotary top 24 is arranged on the lower side of the transverse feed driving shaft 17.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a traverse transmission for a rice transplanter, and more particularly, to a traverse shaft for reciprocating and traversing a seedling mounting table for a long time without requiring frequent maintenance. The point is that the lubrication can be performed over the entire area to improve the reliability of the lateral feed.

[0002]

2. Description of the Related Art As a structure for reciprocating a seedling mounting table,
As shown in Japanese Patent Application Laid-Open No. 10-66424, a transverse drive shaft having a spiral groove formed on the periphery thereof is protruded leftward and rightward from a feed case, and a top member engaging with the spiral groove is mounted on a seedling. By being mounted on the back surface of the table, the seedling mounting table is configured to be reciprocally moved sideways to the left and right with the rotation of the transverse drive shaft.

[0003]

In the above prior art, a cylindrical member for rotatably accommodating a top member and a feed case,
A bellows-shaped rubber boot is covered as a dust seal over the bearing bracket that supports the end of the transverse drive shaft, so that a good lubrication state between the transverse feed drive shaft and the top member can be maintained. However, it is necessary to periodically supply lubricating oil such as grease so as not to run out of lubricating oil, and the work of removing lubricating oil by removing rubber boots and top members is cumbersome and troublesome.

[0004] An object of the present invention is to make it possible to eliminate the lubricating oil replenishing operation as much as possible by making it difficult for the lateral feed drive shaft of the seedling mounting table to run out of oil.

[0005]

According to a first aspect of the present invention, in a transverse feeder of a rice transplanter, a transverse drive shaft is protruded laterally from a feed case and is formed around the transverse drive shaft. A top member having a convex portion engaging with the spiral groove is provided on the seedling mounting table, and an oil supply cup for supplying lubricating oil to the spiral groove is arranged above the lateral feed drive shaft.

A second invention is characterized in that, in the first invention, the top member is arranged below the transverse feed drive shaft.

[0007] A third invention is the first or second invention, wherein:
The oil supply cup is characterized in that it is formed of a transparent container that stores lubricating oil therein.

According to a fourth aspect of the present invention, in the first to third aspects, a bellows-shaped cylindrical boot member surrounding the transverse drive shaft is provided with a tubular member which is surrounded by the transverse drive shaft in a state in which the top member is housed. Along with extending over the feed case, the boot member and the feed case or the boot member and the tubular member are provided with a circumferential projection on the boot member side and a projection on the feed case or the tubular member side at a fitting portion between the boot member and the tubular member. It is characterized in that a peripheral groove to be engaged is formed.

According to a fifth aspect of the present invention, there is provided a lateral feeder of a rice transplanter, wherein a lateral feed drive shaft is protruded laterally from a feed case, and a convex portion engaged with a spiral groove formed around the transverse feed drive shaft is provided. Equipped with a top member provided on the seedling mounting table, a lubricating oil reservoir for the spiral groove is formed inside a cylindrical member surrounding the transverse drive shaft while the top member is housed, and the transverse drive shaft is A rotatable body that is relatively slidable relative to each other and that rotates integrally is housed in a cylindrical member, and a rotatable tongue is provided on the rotatable body that can repel lubricating oil accumulated in a reservoir with the rotation of the rotatable body. It is characterized by the following.

According to the first aspect of the present invention, the lubricating cup for supplying the lubricating oil to the spiral groove of the traverse drive shaft is disposed above the traverse drive shaft. As a result, the spiral groove can be supplied to the helical groove by itself, and it is possible to reduce or eliminate the operation of supplying lubricating oil by a manual operation as in the related art.

A large amount of lubricating oil supplied from the oil supply cup is present below the traverse drive shaft due to gravity, so that the top member is disposed below the traverse drive shaft.
According to the configuration described above, sufficient lubricating oil is present in the engaging portion between the spiral groove and the top member, and a preferable state where lubricating oil is most easily supplied to a location where lubricating oil is required most is realized. be able to.

According to the third aspect of the present invention, since the oil supply cup is formed of a transparent container, the remaining amount of the internal lubricating oil can be easily visually recognized without trouble of removing the oil supply cup or opening the lid. The lubricating oil is less likely to occur than in the case of using a container in which the inside cannot be seen.

According to the configuration of the fourth aspect, the fitting of the circumferential groove and the circumferential projection makes it difficult for the boot member, which is a dust seal, to be detached from the traverse drive shaft, so that the sealing action is ensured. In addition, when providing a circumferential projection on the feed case, there is a disadvantage that the mold cost is increased, such as increasing the number of molds by changing the mold dividing surface of the mold, or providing a plurality of nested molds. According to the structure of the present invention, in which the feed case is provided with a circumferential groove, the groove can be easily formed by cutting after the molding, which is advantageous in that an increase in cost can be suppressed.

If both ends of the boot member are fixed by band tightening, the band can be loosened to easily perform maintenance by contracting the boot member. However, four tightening bands are required, resulting in an increase in cost. Further, if the both ends of the boot member are press-fitted to each other, a tightening band is not required, but maintenance by contracting the boot member cannot be easily performed. In the structure of the present invention, since one of the tightening bands is a press-fitting connection structure, the other has the advantage of being able to easily perform maintenance while reducing costs by using two tightening bands.

According to the fifth aspect of the present invention, a lubricating oil reservoir for the spiral groove is formed inside the cylindrical member surrounding the transverse drive shaft in a state in which the top member is accommodated, and the lubricating oil in the reservoir is formed. Is repelled by a tongue of a rotating body that rotates integrally with the lateral feed drive shaft, so that when the seedling mounting table is driven laterally, the lubricating oil repelled by the spiral groove portion accordingly Will be supplied. Therefore,
Compared with the conventional structure in which the lubricating oil reservoir was not provided inside the cylindrical member, the frequency of lubricating oil replenishment was reduced, and maintenance work was significantly reduced. [Effect] In the lateral feeder of a rice transplanter according to any one of claims 1 to 4, lubricating oil is supplied by gravity alone from an oil supply cup disposed above the traverse drive shaft, and the lubricating oil runs out. The fear was suppressed or prevented, and the lateral feeding operation of the seedling mounting table was smoothly performed over a long period of time, thereby achieving excellent reliability.

In the transverse feeder for a rice transplanter according to the second aspect of the present invention, while making the simple modification in which the top member is disposed below the transverse feed drive shaft, the top member is formed by utilizing the lubricating oil accumulation action by gravity. The running out of the lubricating oil at the engaging portion with the spiral groove is eliminated as much as possible, and the smooth lateral feed operation of the seedling mounting table can be realized for a longer period of time, and the reliability can be enhanced.

According to the third aspect of the present invention, the lubricating cup is formed of a transparent container so that the remaining amount of the lubricating oil can be easily visually checked, and it is difficult to forget to replenish the lubricating oil. Can be done conveniently.

In the transverse feeder for a rice transplanter according to the fourth aspect, the feed case is formed at a low cost by contriving the feed case with the circumferential groove and the boot member with the circumferential projection. In addition to this, it is possible to realize an effective dust sealing function for the traversing drive shaft while suppressing the cost, and it is easy to perform maintenance without the boot member while reducing the cost.

According to a fifth aspect of the present invention, the lubricating oil stored in the cylindrical member for accommodating the top member is repelled by the tongues of the rotating pair with the rotation of the transverse drive shaft. With such a contrivance, lubrication of the spiral groove can be performed over a long period of time, and the frequency of replenishment of lubricating oil and inspection work can be greatly reduced.

[0020]

Embodiments of the present invention will be described below with reference to the drawings. As shown in FIGS. 1 and 2, an engine 3 and a transmission case 4 are provided at the front of an airframe having a pair of left and right front wheels 1 and a pair of left and right rear wheels 2 that can be steered.
The driving unit 5 is formed in the center of the fuselage, and the seedling planting device 7 is connected to the rear part of the fuselage via a link mechanism 6 so as to be able to move up and down freely to constitute a riding type rice transplanter. Seedling plant 7
Is constituted by six-row planting, three planting transmission cases 8, a rotating case 9 rotatably supported on both left and right sides of the planting transmission case 8, and a pair of It is composed of a planting claw 10, three ground floats 11, a seedling mounting table 16, and the like.

As shown in FIGS. 3 to 5, the PTO input shaft 1
The feed case 14 for transmitting the power input to the transmission 3 to the three planting transmission cases 8 is a three-stage high-low transmission mechanism 1.
5 and a lateral feed drive shaft 17 for reciprocating and laterally moving the seedling table 16 and a vertical feed shaft 18 for vertically feeding the seedling planting device of the seedling table 16 at the stroke end of the lateral feed. And A rear axle case 12 supports the rear wheel 2.

The transverse feed mechanism 15 includes a PTO input shaft 13.
The first shaft 19 linked to the bevel gear and the helical shaft 4 at the shaft end
A chain mechanism 22 is provided to extend over the second shaft 20 to which the plant 4 is connected, and to transmit power to the planting transmission case 3 over the first shaft 19 and the output shaft 21.

As shown in FIG. 6 and FIG.
Engages with the lateral feed drive shaft 17 formed by connecting the spiral shaft 44 to the shaft end of the second shaft 20 protruding from the feed case 14 to the outside, and the spiral groove 23 engraved around the spiral shaft 44. A top member 24 having a convex portion 24a, a tubular member 25 surrounding the lateral feed drive shaft 17 in a state where the top member 24 is rotatably housed, and the tubular member 25 are attached to the back surface of the seedling mounting table 16. And a stay 26. Since the top member 24 is rotatable, the projection 2
The posture along any spiral groove 23 in the way back and forth in 4a can appear.

A small-diameter shaft portion 20 of the second shaft 20 having a reduced diameter at a shaft tip protruding from the feed case 14 to the outside.
A is internally fitted into a cylindrical shaft portion 44A formed at the base end of the helical shaft 44, and both shafts 20, 44 are formed at the shaft fitting portion.
These two shafts are connected to rotate integrally with each other by equipping a roll pin 45 straddling.

As shown in FIG. 9, only one pin insertion hole 47 in the spiral shaft 44 is formed on the circumference of the cylindrical shaft portion 44A, and the pin insertion hole 46 in the second shaft 20 is The small diameter shaft portion 20A is formed as a through hole including an operation hole portion 46a having the same diameter as the pin insertion hole 47 of the spiral shaft 44 and a smaller hole portion 46b smaller than the hole.

With the above configuration, the roll pin 45 can appear only in a state of being inserted across the pin insertion hole 47 of the helical shaft 44 and the working hole 46a of the small-diameter shaft portion 20A. The pin insertion holes 46 and 47 in both shafts 20 and 44 are formed in such a state that the relative connection position in the shaft rotation direction of both shafts 20 and 44 is limited to one. Therefore, the second shaft 20 and the helical shaft 44 are always connected with a predetermined relative posture, so that an erroneous assembly does not occur.

For example, when holes having the same diameter penetrating both shafts 20 and 44 are formed, there are two positions where the relative mounting positions of these two shafts are shifted by 180 degrees. In the structure of the present invention, no matter who inserts the roll pin 45, the two shafts 20, 44
Are always the same.

As shown in FIGS. 6 and 7, the bolt 27 fixedly screwed to the cylindrical member 25 is movable vertically in the seedling mounting surface of the seedling mounting table 16 by using a double nut 28. In addition, it is fitted in the long hole 26a of the stay 26 in a state where it is positioned in the left-right direction, and the vertical movement of the seedling mounting table 16 for adjusting the amount of seedlings can be adjusted by this structure. The base end of the stay 26 is formed in a bifurcated shape, and is bolted to the seedling mounting table 16 while straddling the vertical feed belt 35.

The cylinder member 25 is provided with an oil supply cup 29 for supplying lubricating oil to the spiral groove 23, and the oil supply cup 29 is disposed above the lateral feed drive shaft 17, as shown in FIG. In addition, the top member 24 is disposed below the transverse drive shaft 17. The lower end of the oil supply cup 29 is open, and the lubricating oil such as grease accommodated therein receives the outer periphery of the lateral feed drive shaft 17 and the spiral groove 23 by weight alone.
And the supplied lubricating oil tends to hang down due to gravity and collect at the lower part of the transverse drive shaft 17, but since the convex portion 24a of the top member 24 exists there, the spiral groove Sufficient lubricating oil is supplied to the sliding portion between the projection 23 and the projection 24a. Also, refueling cup 2
Reference numeral 9 denotes a transparent container made of transparent plastic or the like, the inside of which is visible so that the remaining amount of lubricating oil can be seen at a glance.

As shown in FIG. 7 and FIG.
7 and a cylindrical member 30 for rotatably supporting the tip.
5, a rubber boot member 31 is formed in a bellows tube shape surrounding the transverse feed drive shaft 17 and extends between the cylindrical member 25 and the feed case 14 so that dirt, dust, foreign matter and the like are spirally wound. A dust seal function that does not adhere to the groove 23, and
The lubricating oil that drips from the lateral feed drive shaft 17 is received in the boot, and a cover function that does not scatter around the boot is exhibited.

The two boot members 31, 31 are the same as each other, and have a small peripheral protrusion 32 on the inner peripheral portion at one end of the boot member 31, and a large peripheral protrusion on the inner peripheral portion at the other end. 33 are formed respectively, and a circumferential groove 34 that engages with the large projection 33 is formed in each of the cylindrical member 25 and the bracket 30. The small protrusion 32 is like a lip of an oil seal, and contributes to an improvement in sealing performance.

The two boot members 31, 31
The screw is forcibly tightened on both the fitting portion side (press-fit mounting side) of the groove 3 and the circumferential groove 34 and the fitting portion side of the small protrusion 32 and the portion where the circumferential groove to be fitted is not formed. A tightening ring (tightening band) 36 having a structure is mounted, and the boot member 31 is fitted and connected so as not to come off. Note that an elastic ring made of a spring material or the like may be attached to the fitting portion between the large projection 33 and the circumferential groove 34.

[Another Embodiment] As shown in FIGS. 10 and 11, a lateral feeder A having an oil bath type lubricating oil supply structure may be used. That is, a lubricating oil reservoir 39 for the spiral groove 23 is formed inside the cylindrical member 38 that surrounds the transverse feed drive shaft 17 in a state in which the top member 24 is housed,
A rotary member 40 that is slidable relative to the horizontal feed drive shaft 17 and that rotates integrally is housed in a cylindrical member 38, and repels lubricating oil stored in a reservoir 39 with the rotation of the rotary member 40. A possible tongue 41 is mounted on the rotating body 40 (see FIG. 12).

The rotator 40 can slide laterally with respect to the lateral feed drive shaft 17 with the relative lateral movement between the tubular member 25 and the lateral feed drive shaft 17, and when the lateral drive shaft 17 rotates, the tubular member 40 is rotated. 25 so that it can rotate independently in 25
7, the tongue 41 constantly repels the lubricating oil while the seedling mounting table 16 is being driven to move in the lateral direction.
It can be supplied to the outer surface of.

Reference numeral 42 denotes a lid cover for the tubular member 25, and reference numeral 43 denotes a bracket for connecting the lid cover 42 and the seedling mounting table 16. In the case of 6-row planting, as shown in FIG. 4, the central two-row planting transmission case 8 is located immediately beside the feed case 14, but in the case of 5-row planting, FIG.
As shown in FIG. 3, the feed case 14 and the central single-row planting transmission case 8 are separated from each other in the left and right directions. The positional relationship between the mounting table 16 and the stay 26 in the left-right direction is slightly different.

[Brief description of the drawings]

FIG. 1 is a side view of a riding rice transplanter.

FIG. 2 is a plan view of a riding rice transplanter.

FIG. 3 is a side view of the planting section.

FIG. 4 is a diagram showing a schematic transmission system of a planting section.

FIG. 5 is a developed view showing a schematic transmission structure inside the feed case.

FIG. 6 is a cross-sectional side view showing a structure for supplying oil to a spiral shaft.

FIG. 7 is a rear view of a partially cutaway showing a structure of a lateral feed drive unit.

FIG. 8 is a partially cutaway front view showing the structure of the boot member.

FIG. 9 is a sectional view showing a connection structure between a second shaft and a helical shaft.

FIG. 10 is a partially cutaway side view showing the structure of an oil-bath traverse drive unit.

FIG. 11 is a cross-sectional view showing the structure of an oil-bath traverse drive unit.

FIG. 12 is a perspective view showing a rotating body with a tongue piece.

FIG. 13 is a diagram showing a schematic transmission system of a planting section for five-row planting;

[Explanation of symbols]

 Reference Signs List 14 feed case 16 seedling mounting table 17 lateral feed drive shaft 23 spiral groove 24 top member 24a convex portion 25 cylindrical member 29 oiling cup 31 boot member 33 circumferential projection 34 circumferential groove 39 lubricating oil reservoir 40 rotating body 41 tongue

Claims (5)

[Claims] 1. A seedling mounting table is provided with a top member having a transverse feed drive shaft protruding laterally from a feed case and having a convex portion engaged with a spiral groove formed around the transverse feed drive shaft. A lateral feeder for a rice transplanter, wherein an oil supply cup for supplying lubricating oil to the spiral groove is disposed above the lateral drive shaft. 2. The lateral feeder of a rice transplanter according to claim 1, wherein the top member is disposed below the lateral feed drive shaft. 3. The lateral feeder of a rice transplanter according to claim 1, wherein the oil supply cup is formed of a transparent container that stores lubricating oil therein. 4. A bellows-shaped boot member surrounding the transverse drive shaft is provided over the tubular member surrounded by the transverse drive shaft and the feed case in a state in which the top member is accommodated. At the same time, at the fitting portion between the boot member and the feed case or between the boot member and the cylindrical member, a circumferential projection is provided on the boot member side, and the projection is provided on the feed case or the cylindrical member side. The lateral feeder for a rice transplanter according to any one of claims 1 to 3, wherein a peripheral groove is formed to engage with the horizontal groove. 5. A seedling mounting table is provided with a top member having a transverse feed drive shaft projecting laterally from a feed case and having a convex portion engaging with a spiral groove formed around the transverse feed drive shaft. A lubricating oil reservoir for the spiral groove is formed inside the tubular member surrounded by the lateral feed drive shaft in a state where the top member is housed, and the lateral feed drive shaft is relatively slidable relative to the lateral feed drive shaft. And, a rotating body that rotates integrally is provided inside the cylindrical member, and a tongue piece capable of repelling lubricating oil accumulated in the reservoir portion with the rotation of the rotating body is provided on the rotating body. Lateral feeder of a rice transplanter.