JP3298856B2 - Partial rotation rotary tillage device - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a rotary tilling device (hereinafter, referred to as a partially inverted rotary tilling device) comprising a plurality of tilling tubes which rotate a rotary claw shaft cylinder in an opposite manner.

[0002]

2. Description of the Related Art Conventionally, an output shaft of a main transmission mechanism and an output shaft of a sub-transmission mechanism rotating in the opposite direction to the output shaft are coaxially double shaft-shaped so that they can be independently rotated. K
Of the first and second cultivating cylinders, which are mounted laterally on the bearing and are arranged side by side in the axial direction of the two output shafts, the second cultivating cylinder located at the side of the cultivating case is connected to the sub-transmission mechanism. While being rotationally driven by the output shaft, the first cultivation cylinder positioned on the axially outer side of the second cultivation cylinder is rotationally driven by the output shaft of the main transmission mechanism, and
2. Description of the Related Art There has been known a partial reversing rotary tillage device in which a tilling claw mounted on a cultivation tube and a cultivation claw mounted on a first cultivation tube are driven into the soil in opposition to each other so as to cultivate while suppressing dashing of an airframe. (For example, Japanese Patent Publication No. 46-39041)
Reference).

[0003]

In the above-mentioned partial reverse rotary tilling apparatus, the tilling claws of the second cultivating cylinder located on the lateral sides of the tilling case are different from the tilling claws of the first tilling cylinder. Since the soil is thrown in the opposite direction by throwing up the cultivated soil from the bottom up, the thrown cultivated soil and the grass straw etc. contained in it are cultivated.
And tend to become enormous by adhering and depositing on the outer surface of the soil and the outer periphery of the second cultivation cylinder, which causes unstable cultivation depth and makes cultivation impossible. Extends to the adjacent part of the second cultivation cylinder and the first cultivation cylinder, and the first and second cultivation cylinders are screwed into the boundary between the two cultivation cylinders by the counter rotation of the two cultivation cylinders. There has been a problem that damage is likely to occur.

[0004]

SUMMARY OF THE INVENTION In order to solve the above-mentioned problems, the present invention provides a partially reversing rotary tilling apparatus employing the following technical means. That is, in claim 1, the output shaft (6) of the main transmission mechanism (4) and the output shaft (6)
The output shafts (12a) and (12a) of the sub-transmission mechanisms (GL) and (GR) rotating in the opposite direction with respect to, the concentric double shafts and the tilling case ( 1) Install the bearing horizontally
Of the first cultivation cylinders (30) and (30) and the second cultivation cylinders (13) and (13) juxtaposed in the axial direction of the two output shafts (6), (12a) and (12a), the cultivation case ( 2nd tillage cylinder located on the side of 1)
(13) (13) is connected to the output shaft (12) of the sub-transmission mechanism (GL) (GR).
a) (12a), the second tilling cylinder (13) (1)
The first cultivation cylinder (30) (3) located on the axially outer side of (3).
0) is rotatably driven by the output shaft 6 of the main transmission mechanism 4 in a partially reverse rotary tilling apparatus, the second cultivating cylinder located at the side of the cultivating case 1. (13) (13)
A cultivated claw (27) having a rotation diameter (D1) and a straight blade portion having a rotation diameter (D2) larger than the rotation diameter (D1) of the cultivated claw (27). The straight blade (28) located close to the lateral side of the tilling case (1) and the rotating diameter (D
The rotary tilling device is a partial reverse rotary tilling device provided with a tilling claw (29) having a wing (29a) having a smaller rotating diameter (D3) than that of the tilling claw (29).

According to a second aspect of the present invention, in the partial reverse rotary tilling apparatus according to the first aspect, an outer end face of the second cultivating cylinder and a first cultivating cylinder located on a laterally outer side in the axial center direction thereof. A protective cover that rotates with the output shaft of the main transmission mechanism is provided between the inner end faces, and its peripheral edge is bent toward the second cultivating cylinder, and the bent peripheral edge contacts the outer periphery of the outer end of the second cultivating cylinder. A partial reversal rotary tilling device having a configuration in which the crown is covered in a state where the cultivation is not performed.

[0006]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the present invention will be described with reference to the drawings. The drawings show a specific example of a center-drive type partially reversing rotary tilling device in which a second tilling tube is an inclined tilling tube. FIG. 1 is a cross-sectional view of a main part of a partially reversed rotary tillage device according to the present invention, FIG. 2 is a cross-sectional view showing an enlarged part thereof, and FIG. 3 is a part of a seal for internal separation. FIG. 4 is an enlarged partial view, FIG. 4 is a side view showing an example of arrangement of tilling claws to be mounted on the second tilling tube, and FIG. 5 is a schematic front view showing a tilling claw provided with a projecting wing to be mounted on the second tilling tube. is there.

In FIGS. 1 and 2, a tillage case (1)
Is an opening hole with a vertical length (L)
(2) (2) is opened, and the outside of each opening (2) (2) is configured to be closed by lids (3) (3) fastened and attached to the periphery of the opening. . Each cover (3) has an intermediate rotary shaft interlocked with a main drive mechanism (4) in a tilling case (1).
A portion for bearing and supporting the shaft end of (5) is provided, and at a separate location, a support cylinder (3a) extending outward is integrally formed.

The main transmission mechanism (4) in the cultivation case (1) is connected to the output shaft (6) of a horizontal shaft core (O1) which is provided below the cultivation case (1). The intermediate rotary shaft (5) is higher than the output shaft (6) in transmission and is connected to the input shaft provided in the upper part of the tilling case.
It is provided in parallel with (6), and is driven to rotate by a sprocket (7) associated with the chain transmission mechanism. Here, (8) is a passive sprocket fitted to the center of the output shaft (6), (9) is a chain, and (10) is a tension sprocket.

Driving gears (11) and (11) are fitted to the left and right sides of the sprocket (7) of the intermediate rotating shaft (5), and the output shafts (11) and (11) are respectively attached to the driving gears (11) and (11). The passive gears (12) and (12) rotatably fitted to the outer periphery of the drive gear (6) are always meshed with each other to form left and right sub-transmission mechanisms (GL) and (GR). ) (12), (11)
(12) are the opening holes of the tilling case (1) described above, respectively.
(2) It is positioned so as to fit in (2).

A sub-transmission mechanism (GL) (GR) is provided with a second
The tilling cylinders (13) and (13) are for rotationally driving the output shaft (6) of the main transmission mechanism (4) in a direction opposite to that of the main transmission mechanism (4). Passive gear (12)
(12) is the output shaft of each sub-transmission mechanism (GL) (GR)
(12a) It is formed integrally with the inner end of (12a). The output shaft (12a) of each sub-transmission mechanism (GL) (GR)
Is a main transmission mechanism (4) via a needle bearing (14).
The output shaft (6) is rotatably fitted to the output shaft (6), and is provided in the form of a double shaft concentric with the output shaft (6) of the main transmission mechanism (4). The shaft (15) is interposed between the two output shafts (12a) and (6) with the shaft sealing.

The output shafts (12a) (12a) of the sub-transmission mechanisms (GL) (GR) are connected to the support cylinders (3) (3) of the lids (3) (3) via a plane metal (16). 3a) The inner diameter of the output shaft (12a) (12a) and the inner diameter of the support cylinder (3a) (3a) at the outer end of the support cylinder (3a) (3a). The shaft is sealed between the two by a seal (17) interposed between the holes. The seal (17) is formed of an elastic material such as oil-resistant rubber, and has an inner diameter portion (17a) formed in an involute spline hole, and is connected to the output shaft (1).
2a) The outer lip (17b) is fitted externally to the involute spline carved on the outer diameter part.
Is provided in contact with the inner peripheral hole surface of the support cylindrical portion (3).

Output shaft (12a) of sub-transmission mechanism (GL) (GR)
(12a) extends outward from the outer ends of the support cylinders (3a) (3a), which are parts of the tilling case (1), and an involute spline is engraved on each of the extensions. And a spur gear is mounted on each involute spline.
(18) is fitted and fixed, and the spur gear (18) is
(13) An internal gear formed in (13) (19)
The final transmissions (20) and (20) for rotating the second tilling cylinders (13) and (13) while meshing with (19) are configured.

Each of the second tilling cylinders (13) and (13) has an axis (O2) inclined at a fixed angle with respect to the axis (O1) of the output shafts (6), (12a) and (12a). To rotate around
It is rotatably supported on the outer diameter of the support cylinder part (3a) via a bearing (21), and its inner end is a normal one interposed between the outer diameter of the support cylinder part (3a). Although the shaft is sealed by an oil seal (22), the outer end portion is sealed by a flexible seal (23) so as to be able to follow a change in the interval due to the inclined rotation. The bending seal (23) is interposed between the output shaft (12a) of the auxiliary transmission mechanism and the second tilling cylinder (13) as shown in the enlarged view of FIG. To the extent that the movement of the portion that bends and stretches following the change is not hindered, a flange (24) that protects the bendable portion is provided on the outside.

Further, the outer peripheral portion of the outer end of each second tilling tube (13) is formed as a spherical portion (13a) centered on the intersection (P) of the two axis cores (O1) and (O2). Then, the collar portion (24)
A seal protection cover (25) located further outside of the above is fitted and fixed to the output shaft (6) of the main transmission mechanism, and its outer peripheral edge has at least an inner surface similar to the spherical portion (13a). It is formed in a spherical bowl-like shape, and the spherical bowl-like portion is overlapped with the spherical shape portion (13a) without being in contact with the spherical portion (13a). Thus, the bending seal (23) is double protected.

The second tilling tube (13) is provided with a required number of tilling claw mounting seats (26).
Tilling claws (27) and (28) are attached to (26). In the embodiment, as shown in FIG.
Four tilling claw mounting seats with different phases in the rotation direction (R)
(26) .. provided with two of them,
The common plowed claw (27) of (D1) is mounted.

The other one of the tilling nail mounting seats has a straight blade having a diameter (D2) slightly larger than the rotation diameter of the tilled nail (27).
The straight blade (28) is provided with a straight blade portion located close to the lateral side surface of the tilling case (1) as shown by a virtual line in FIG. The part also serves to reduce the power required for tillage by cutting the soil vertically.

Further, a tilling claw (29) with a projecting wing (29a) having a diameter (D3) smaller than the rotation diameter (D1) of the cultivated claw (27) is attached to another cultivating claw mounting seat. The tilling claw (29) is projected and the tilling case (1)
It is configured so that soil, grass straw, and the like that are to be deposited between the sides of the building are splashed off and eliminated.

Reference numerals (30) and (30) denote first tilling cylinders. Each of the first tilling cylinders (30) is fitted with the protective cover (25), and the main transmission mechanism ( 4) It is detachably inserted into the output shaft (6) and fixed by wedges. The required number of tilling claw mounting seats (31) are distributed and mounted on the outer circumference. A pawl (32) is attached.

The present invention can be applied not only to a rotary tilling device for a general cultivator, a management device, or a small and light machine such as a tiller, but also to a rotary tilling device for a riding tractor. The present invention is not limited to the center-drive type rotary tilling device, and may be applied to the side-drive type rotary tilling device. Can be applied so as to exhibit the same function only by changing the positions of the first and second tillers.

[0020]

According to the present invention, the output shaft of the main transmission mechanism and the output shaft of the sub-transmission mechanism rotating in the opposite direction to the output shaft are concentric double shafts, each of which is independently rotated. Of the first and second cultivation cylinders, which are mounted laterally on the cultivation case and are arranged side by side in the axial direction of both output shafts, the second cultivation which is located on the lateral side of the cultivation case. Rotationally driving the cylinder by the output shaft of the auxiliary transmission mechanism, and rotating the first cultivation cylinder, which is located on the outer side in the axial center direction of the second cultivation cylinder, by the output shaft of the main transmission mechanism. In the apparatus, a second cultivating cylinder located on the side of the tilling case is provided with a cultivated claw and a straight blade having a rotation diameter larger than the rotation diameter of the cultivated claw. Rotate the straight blade close to the side surface of the tilling case and the tilling claw with the wings with the rotating wing smaller than the rotating diameter of the cultivated claw in the rotation direction. Since is provided with different phases,
The effect of scraping off the soil and the like by the straight blade and the effect of removing the soil and grass from the tilling claws with the wings with the wings are synergistic, so that the soil and grass from the outer surface of the tilling case to the outer periphery of the second cultivation cylinder. Satisfactorily is prevented from increasing the amount of adhesion.

In addition, in the rotary tiller according to the second aspect of the present invention, the cultivation of soil, grass straw, and the like can be minimized by the straight blade or the tilling claw with the wings provided on the second cultivating cylinder. Even if soil, grass straw, etc. adhere to and accumulate on the second cultivation cylinder, etc., it is not possible to prevent them from screwing into adjacent portions of the second cultivation cylinder and the first cultivation cylinder. -Is prevented by

[Brief description of the drawings]

FIG. 1 is a sectional view of a main part of a partial reverse rotation tillage device according to the present invention.

FIG. 2 is an enlarged sectional view of a part of FIG.

FIG. 3 is an enlarged partial view of a part of the seal for internal separation.

FIG. 4 is a side view showing an arrangement example of a tilling claw mounted on a second tilling tube.

FIG. 5 is a schematic front view showing a tilling claw provided with a projecting wing mounted on a second tilling tube.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Tilling case 4 Main transmission mechanism 6 Output shaft of main transmission mechanism GL Sub transmission mechanism GR Sub transmission mechanism 12a Output shaft of sub transmission mechanism 13 Second cultivation cylinder 25 Protection cover 27 Plowed claw 28 Straight blade 29 Jumping Tilling claws with extension wings 30 First cultivation cylinder

Claims (2)

(57) [Claims] An output shaft (6) of a main transmission mechanism (4) and a sub-transmission mechanism (GL) rotating in an opposite direction to the output shaft (6).
The output shafts (12a) and (12a) of the (GR) are concentric double shafts, and are mounted horizontally on the tilling case (1) so that they can rotate independently. , (12a), a first tiller (30) (30) and a second tiller (13) juxtaposed in the axial direction of (12a).
(13) The second one located on the side of the tillage case (1)
The tilling cylinders (13) and (13) are connected to the output shaft of the sub-transmission mechanism (GL) (GR).
(12a) Rotated by (12a), the second tilling cylinder (1
3) The first tilling tube (3) located on the axially outer side of (13).
In the partial reverse rotary tilling apparatus in which the main shaft (0) and (30) are driven to rotate by the output shaft (6) of the main transmission mechanism (4), the first rotator is located at the side of the tilling case (1). 2 tillers (13)
In (13), a plowed claw (27) having a rotation diameter (D1) and a rotation diameter (D1) larger than the rotation diameter (D1) of the plowed claw (27) are provided.
2) The straight blade portion is provided with the straight blade portion which is located close to the lateral side surface of the tilling case (1), and is smaller than the rotation diameter (D1) of the cultivated claw (27). Wing (2)
9a) A partially reversing rotary tilling device provided with tilling claws (29) having different phases in the rotation direction. 2. An outer end face of the second tilling cylinder (13), (13),
A protection cover (25) that rotates together with the output shaft (6) of the main transmission mechanism (4) is provided between the shaft and the inner end surface of the first cultivation cylinder (30) located on the outer side in the axial direction. The periphery is bent toward the second tilling tube (13), and the bent rim is bent toward the second cultivation tube (13).
2. The partial reverse rotary tilling device according to claim 1, wherein the crown is covered without contacting the outer periphery of the outer end of (13).