JP3274117B2 - 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 partially inverted rotary tilling apparatus in which a rotary claw shaft cylinder having a predetermined tilling width is constituted by a plurality of tilling cylinders rotating in opposite directions.

[0002]

2. Description of the Related Art Conventionally, an output shaft of a main transmission mechanism formed in a tilling case and an output shaft of a sub transmission mechanism rotating in a direction opposite to the output shaft of the main transmission mechanism are coaxially double. The bearings are mounted horizontally on the tillage case so that they can rotate independently of each other,
The first cultivating cylinder of the first cultivating cylinder and the second cultivating cylinder arranged side by side in the axial direction of both output shafts is driven to rotate by the output shaft of the main transmission mechanism, and the second cultivating cylinder is rotated by the sub-transmission mechanism. 2. Description of the Related Art There is known a partial reverse rotary tilling apparatus which is driven to rotate in a direction opposite to a first cultivating cylinder by a power transmitted from an output shaft of a rotary cultivator (for example, see Japanese Patent Publication No. 46-39041). .

[0003]

In the conventional partial reverse rotary tilling apparatus disclosed in the above document, the inner cylinder portion of the second tilling cylinder which rotates in the opposite direction to the first tilling cylinder is tilled. And inserted into and supported by the inside of the bearing (the bore of the support cylinder connected to the tilling case), and the insertion portion is formed with an interlocking joint with the output shaft of the auxiliary transmission mechanism. An oil seal is interposed in the outer portion to seal the shaft between the outer diameter of the output shaft of the auxiliary transmission mechanism and the inner diameter of the inner cylinder of the second cultivation cylinder, and the outer diameter of the inner cylinder of the second cultivation cylinder and the cultivation case. Since the inside of the cultivation case is shaft sealed with another seal interposed between it and the shaft, the internal configuration and shaft sealing configuration are complicated, the assembly and disassembly are not easy, and there is a difficulty in maintenance. Yes, and if the second cylinder is removed for maintenance, etc., lubricating oil inside the tillage case will flow out The difficulty was also.

[0004]

SUMMARY OF THE INVENTION The present invention has been made to solve the above-mentioned difficulties, and has an output shaft of a main transmission mechanism formed inside a tilling case, and an output shaft of the main transmission mechanism. The output shaft of the auxiliary transmission mechanism, which rotates in the opposite direction to the output shaft, is concentric double shafts, and is mounted horizontally on the tilling case so that each can rotate independently. The first cultivation cylinder of the first cultivation cylinder and the second cultivation cylinder arranged side by side is driven to rotate by the output shaft of the main transmission mechanism, and the second cultivation cylinder is driven by the power transmitted from the output shaft of the sub transmission mechanism. In a partial reverse rotary tilling device that is driven to rotate in a direction opposite to the first cultivation cylinder, dust is generated between an output shaft of the main transmission mechanism and an inner diameter of an output shaft of a sub transmission mechanism externally fitted thereto. -Seal between the shaft and the tilling case between the outer diameter of the output shaft of the auxiliary transmission mechanism and the tilling case. An output shaft of the auxiliary transmission mechanism is extended outwardly from the seal-interposed portion with a seal interposed, and power is transmitted to the second cultivation cylinder from a portion of the output shaft protruding outside the tillage case. To be rotationally driven by the output shaft of the subtransmission mechanism.
The output shaft of the auxiliary transmission mechanism is attached to the outer periphery of the
Rotates with the output shaft of the main transmission mechanism, which rotates in the opposite direction.
That the protection cover - of the peripheral portion is characterized in that by the crown polymerization, by employment of such an arrangement the first tilling cylinder counter
Grass straw etc. is tightened at the outer end of the second tilling tube rotating in the opposite direction
In addition, the inner structure and shaft seal structure of the tilling case are simplified as compared with the conventional case, making maintenance easier, and even if the second tilling tube is removed, the tilling will be continued. Lubricating oil inside the case did not flow out.

[0005]

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 partial reverse rotation tillage device according to the present invention, FIG. 2 is a cross-sectional view showing an enlarged part thereof, and FIG. FIG.

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 rotating shaft (5) interlocked with a main transmission mechanism (4) in a tilling case (1).
There is a part that supports the shaft end of the bearing.
At a separate location, a support tube that extends outward
(3a) is formed integrally.

The main transmission mechanism (4) in the tilling case (1) is connected to an output shaft (6) of a horizontal axis (O1), which is provided below the tilling case (1), out of the figure. 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 rotated by a sprocket (7) related to the chain transmission mechanism. Incidentally, (8) is a passive sprocket fitted to the center of the output shaft (6), (9) is a chain, and (10) is a tension sprocket.

Drive gears (11) and (11) are fitted to the left and right sides of the sprocket (7) of the intermediate rotary shaft (5), and a passive gear (12) is attached to each of the drive gears (11) and (11). ) And (12) are always meshed to form left and right auxiliary transmission mechanisms (GL) and (GR).
1) (12), (11) and (12) are the above-described tilling cases (1).
Are positioned so as to fit into the opening holes (2) and (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) to seal the fitting surfaces.

The output shafts (12a) and (12a) of the sub-transmission mechanisms (GL) and (GR) are connected to the support cylinders (3) and (3) of the lids (3) and (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 engraved on an outer diameter portion of the output shaft (12a). And the outer lip (17b) is provided so as to abut the inner diameter surface of the support cylinder (3a).

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 (19) formed in (13)
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 cylinder (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 protective cover ( 25) located further outside of the main transmission mechanism is fitted and fixed to the output shaft (6) of the main transmission mechanism, and its outer peripheral edge has a spherical surface whose inner surface is at least similar to the spherical portion (13a). The spherical bowl-shaped part is formed in the shape of a spherical bowl.
The flexible seal (2) is covered with this protective cover (25) without being in contact with (13a).
3) is double protected .

The second tilling tube (13) is provided with a required number of tilling nail mounting seats (26), and each tilling nail mounting seat (26) is provided.
The tilling claws (27) and (28) are attached to the fins. The first cultivation cylinders (30) and (30) are provided with the protective cover (25) fitted on the output shaft (6) of the main transmission mechanism, and then the output shaft is provided from the outside thereof.
(6) It is detachably inserted into and fixed to the wedge.
A required number of tilling claw mounting seats (31) are distributed and mounted on the outer periphery, and a common tilling claw (32) is mounted on each mounting seat.

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 as one that exerts the same function by changing the arrangement on both sides in the axial direction of the first cultivation cylinder.

[0016]

As described above, the invention according to claim 1 of the present invention is characterized in that the output shaft (6) of the main transmission mechanism (4) formed inside the tilling case (1) is Output shaft of transmission mechanism (4)
(6) Sub-transmission mechanism (GL) that rotates in the opposite direction to
The output shafts (12a) and (12a) of the (GR) are made concentric double shafts and supported on the cultivation case (1) so that each can rotate independently. ) (12a), a first tilling tube (30) (30) and a second tilling tube (13) (1)
The first tilling cylinder (30) (30) of (3) is connected to the main transmission mechanism (4).
Rotatively driven by the output shaft (6) of the
(13) (13) is connected to the output shaft (12) of the sub-transmission mechanism (GL) (GR).
a) The first cultivation cylinder (30) (3)
In the partial reverse rotary tilling device driven to rotate in the direction opposite to the direction (0), the output shaft (6) of the main transmission mechanism (4) and the auxiliary transmission mechanisms (GL) (GR) fitted externally thereto. Between the output shaft (12a) and the inner diameter of the output shaft (12a).
And the output shaft (12) of the sub-transmission mechanism (GL) (GR).
a) Seal (1) is provided between the outer diameter of (12a) and the tillage case (1).
7), the output shafts (12a) and (12a) of the auxiliary transmission mechanisms (GL) and (GR) extend outward from the seal (17) interposed portion, and the output shaft (12a) is provided. The power is transmitted from the projecting portion of the tilling case (12a) outside to the second cultivating cylinders (13) and (13), and the output shafts (12a) and (12a) of the sub-transmission mechanisms (GL) and (GR).
Outer ends of the second tilling cylinders (13) (13) driven to rotate by
An output shaft (12a) of a sub-transmission mechanism (GL) (GR)
(12a) Output shaft of the main transmission mechanism rotating in the opposite direction
The peripheral edge of the protective cover (25) that rotates together with (6)
The opposite direction from the first tiller (30) (30)
At the outer end of the second tilling tube (13) rotating in the opposite direction, grass straw etc.
Is prevented from being wound in a tightened shape.
-The internal configuration of shaft (1) and the shaft seal configuration are
Simplified and easy maintenance, the second cylinder
Even if removed, the lubricating oil inside the tillage case will flow out
Nothing was gone .

[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.

[Description of Signs] GL Sub-transmission mechanism GR Sub-transmission mechanism 1 Tilling case 4 Main transmission mechanism 6 Output shaft of main transmission mechanism 12a Output shaft of sub-transmission mechanism 13 Second cultivation cylinder 15 Dust seal 17 Seal 30 1st tiller

Claims (1)

(57) [Claims] An output shaft (6) of a main transmission mechanism (4) formed inside a tilling case (1), and an output shaft of the main transmission mechanism (4).
(6) Sub-transmission mechanism (GL) that rotates in the opposite direction to
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 cultivating cylinder (30) (30) and a second cultivating cylinder (13) juxtaposed in the axial direction of (12a).
The first tilling cylinder (30) (30) of (13) is used as the main transmission mechanism
While being rotationally driven by the output shaft (6) of (4), the second
The tilling cylinders (13) and (13) are connected to the output shaft of the sub-transmission mechanism (GL) (GR).
(12a) The first cultivation cylinder (3
0) In a partially reverse rotary tilling device which is driven to rotate in a direction opposite to that of (30), the main transmission mechanism (4)
Output shaft (6) and auxiliary transmission mechanism (GL) (GR) fitted on it
Dust seal between the output shafts (12a) and (12a)
The shaft is sealed at (15), and a seal (17) is interposed between the outer diameter of the output shafts (12a) and (12a) of the sub-transmission mechanism (GL) (GR) and the tilling case (1). And the output shafts (12a) and (12a) of the auxiliary transmission mechanisms (GL) and (GR) outward from the seal (17) interposed part.
So that the power is transmitted to the second cultivation cylinders (13) and (13) from the outside of the cultivation case of the output shafts (12a) and (12a) , and the auxiliary transmission mechanisms (GL) and (GR) are transmitted. Output shaft (12a)
The second tilling tube (13) (1) rotated and driven by (12a)
3) The output shaft of the sub-transmission mechanism (GL) (GR)
(12a) of the main transmission mechanism rotating in the opposite direction to (12a)
Remove the edge of the protective cover (25) that rotates with the output shaft (6).
A partially reversing rotary tillage device characterized by being crowned .