JP3203325B2 - 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, a main output shaft of a main transmission mechanism and a sub output shaft of a sub transmission mechanism rotating in a direction opposite to the main output shaft are coaxial double shafts, and each of them 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. 2. Description of the Related Art There is known a partial reverse rotary tilling apparatus in which a cylinder is rotationally driven by a sub-output shaft and a first cultivation cylinder located on an axially outer side of a second cultivation cylinder is rotationally driven by a main output shaft. (For example,
-39041).

[0003]

The conventional partially reversing rotary tilling apparatus disclosed in the above-mentioned document is composed of a main output shaft and a sub output shaft provided in a double shaft shape, and a transmission gear for transmitting power to the sub output shaft. The rotary shaft on which the drive gears are arranged
Since the bearing was supported on the bearing side and the outside was covered by the lid, it was difficult to assemble and disassemble the main and sub output shafts and the main transmission mechanism and sub transmission mechanism that rotationally drive them, making maintenance difficult, In addition, since the total width of the tilling case including the lid becomes wide, there is a problem that the residual cultivation processing under the tilling case is disadvantageous. Since the inside of the two tilling cylinders communicates in series, there is also a problem that if the second tilling cylinder is removed for maintenance or the like, the lubricating oil inside the tilling case flows out.

[0004]

SUMMARY OF THE INVENTION The present invention has been made to solve the above problems, and in order to attain the object, a sub output shaft is rotatably fitted to a main output shaft so as to be concentric. Double output shaft, with both output shafts inserted into a support cylinder formed on a removable lid that is fastened so as to close the opening holes formed on both side walls of the tilling case and can be rotated freely. , The main output shaft is interlocked with the main transmission mechanism in the tilling case, and the sub output shaft is driven by a passive gear provided at the end of each inner shaft, and the intermediate rotation is interlocked with the main transmission mechanism. The main transmission shaft is driven to rotate in a direction opposite to the main output shaft by a sub-transmission mechanism meshed with a drive gear provided on the shaft. The gear train of the auxiliary transmission mechanism is mounted on the side wall of the tilling case while being supported by a bearing support formed on the body. The second tilling cylinder is driven to rotate by the auxiliary output shaft projecting laterally from the support cylinder portion, and is further laterally outwardly protruded from the outer shaft end of the auxiliary output shaft. And a first reverse rotation rotary tilling apparatus in which the first tilling cylinder is driven to rotate by the main output shaft.

[0005] In the above-mentioned partial reverse rotary tilling apparatus, a dust seal is interposed between the main output shaft and a sub output shaft fitted to the main output shaft, and a dust seal is interposed between the sub output shaft and the support cylinder. It is preferable to seal the shaft with a seal interposed therebetween. When the second cultivating cylinder rotatably driven by the auxiliary output shaft is rotatably supported on the outer diameter of the support cylinder portion of the lid, the inside of the second cultivating cylinder is connected to the inside of the cultivating case. It is better to independently lubricate oil as a separate chamber.

[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.

[0008] The main transmission mechanism (4) in the tilling case (1) has a main output shaft (6) of a horizontal axis (O1) provided horizontally below the tilling case (1). A chain transmission mechanism interlockingly connected to an input shaft provided on the upper part of the outer cultivation case, wherein the intermediate rotary shaft (5) is higher in power transmission than the main output shaft (6) and has a main output shaft (6). ), And is rotatably driven by a sprocket (7) associated with a chain transmission mechanism. Note that (8) is a passive sprocket fitted to the center of the main output shaft, (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 the main output shaft is attached to each drive gear (11) and (11). Passive gears (12) and (12) rotatably fitted to (6) are always meshed with each other to form left and right sub-transmission mechanisms (GL) and (GR). 11) (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 connected to the main output shaft (6) of the main transmission mechanism (4).
, And the passive gear (1) in each subtransmission mechanism (GL) (GR).
2) and (12) are formed integrally with the inner ends of the sub output shafts (12a) and (12a) of the sub transmission mechanisms (GL) and (GR). And a sub output shaft of each sub transmission mechanism (GL) (GR).
(12a) is rotatably fitted to the main output shaft (6) of the main transmission mechanism (4) via the needle bearing (14) and is connected to the main output shaft (6) of the main transmission mechanism (4). The dust seal (1) is provided on the outer side of the needle bearing (14) and is provided in a concentric double shaft shape.
5) are interposed respectively to seal the fitting surfaces of both output shafts (12a) and (6).

The sub-output shafts (12a) (12a) of the sub-transmission mechanisms (GL) (GR) are connected to the supporting cylinders of the lids (3) (3) via a plain metal (16). (3a) The inner diameter hole of (3a) is fitted and supported, and the outer diameter of the auxiliary output shafts (12a) (12a) and the outer diameter of the support cylinder (3a) at the outer end of the support cylinder (3a) (3a).
The shaft is sealed by a seal (17) interposed between the inner surface and the inner surface of (3a). 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 an outer diameter portion of the auxiliary output shaft (12a). Externally fitted to the engraved involute spline, and the outer lip
(17b) is provided in contact with the inner diameter hole surface of the support cylinder (3a).

The sub output shaft (12) of the sub transmission mechanism (GL) (GR)
a) and (12a) extend outward from the outer ends of the support cylinders (3a) and (3a), which are parts of the tilling case (1), and the involute splines are respectively provided on the extended portions. A spur gear (18) is fitted and fixed to each of the involute spline portions, and the spur gear (18) is attached to the second tilling cylinder.
(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. As shown in the enlarged view of FIG. 2, the bending seal (23) has a sub-output shaft (12a) of the sub-transmission mechanism.
A flange (24) is provided on the outside of the tilling tube (13) for protecting the bent and stretched portion within a range not interfering with the movement of the bent and stretched portion following the change in the distance between the two. It has become.

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 axes (01) and (O2). Then, the collar portion (24)
Protective cover (25) located further outside of the tilling shaft (6)
The outer peripheral edge portion is formed into a bowl-like shape having a spherical surface whose inner surface is similar to the spherical portion (13a), and the bowl-like portion of the spherical surface is formed into the spherical shape. Department (13
The flexible seal (23) is doubly protected by the protective cover (25) because it is crowned without contact with a).

The second tilling tube (13) is provided with a required number of tilling claw mounting seats (26).
A tillage claw is attached to (26). In the embodiment, as shown in FIG.
Are provided with four tilling claw mounting seats (26) at different phases, and two of them are equipped with a common tilling claw (27) having a turning diameter (D1). I have. In addition, a straight blade (28) having a slightly larger diameter (D2) than the rotating diameter of the sun claws (27) is attached to the other piece of the tilling claw mounting seat, and the soil is vertically extended by the straight blade. The power required for tilling is reduced by making an incision. In addition, another tilling claw mounting seat is provided with a spring wing having a smaller diameter (D3) than the rotation diameter (D1) of the cultivated claw (27). A tilling claw (29) with a tilling (29a) is attached, and the lashing action of the tilling claw (29) bounces off soil and grass that are to be deposited between the tilling case (1) and the side surface. Configured to eliminate.

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) Removably inserted into the main output shaft (6) and fixed by wedges, and the required number of tilling claw mounting seats (31) are distributed and mounted on the outer circumference. A claw (32) is attached.

The present invention can be applied to a rotary tilling device for a general cultivator, a management device or a small and light machine such as a tiller, as well as 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.

[0018]

As described above, the device according to the present invention is constructed such that the auxiliary output shaft is rotatably fitted to the main output shaft to form a concentric double shaft, and both output shafts are formed on both side walls of the tilling case. The main output shaft is tilled by being inserted into a support cylinder formed on a detachable lid that is fastened so as to close the opening hole opened in
And a sub-output shaft in which a passive gear provided at an end of each inner shaft is meshed with a drive gear provided on an intermediate rotating shaft which is interlocked with the main transmission mechanism. The main output shaft is driven to rotate in a direction opposite to the main output shaft by a mechanism, and both shaft ends of the intermediate rotation shaft supporting the drive gear of the sub-transmission mechanism are supported by bearing support portions formed on the lid, The gear train of the auxiliary transmission mechanism is inserted into each of the opening holes formed in the side wall of the tilling case, and is positioned, and the second tilling cylinder is rotationally driven by an auxiliary output shaft projecting laterally from the support cylinder. Since the first cultivation cylinder is driven to rotate by the main output shaft projecting further laterally outward from the outer shaft end of the sub output shaft, the main and sub output shafts and the intermediate rotation can be obtained simply by removing the lid. The shaft is released and the drive gear and passive gear The opening of the side wall of the tilling case is completely opened, so that the auxiliary transmission mechanism including the driving gear and the passive gear and the main and auxiliary output shafts can be easily disassembled. On the contrary, the assembling can be easily performed, and further, in the assembling state, the driving gear and the passive gear of the sub-transmission mechanism are fitted into the opening holes in the side wall of the tilling case, so that the entire width of the tilling case is obtained. Cultivation because of narrowing
It is advantageous for residual tillage treatment below the soil.

In addition, a dust seal is interposed between the main output shaft and a sub-output shaft externally fitted to the main output shaft, and a seal is interposed between the sub-output shaft and the support cylinder to seal the shaft. By
When the second cultivation cylinder is rotatably supported on the outer diameter of the support cylinder of the lid, the interior of the second cultivation cylinder is independently provided as a separate room separated from the interior of the cultivation case. By performing oil-sealing lubrication, the second tilling cylinder can be easily removed without worrying about the outflow of lubricating oil from the tilling case.

[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 Main output shaft GL Sub transmission mechanism GR Sub transmission mechanism 12a Sub output shaft 13 Second cultivating cylinder 15 Dust seal 17 Seal 30 First cultivating cylinder

Claims (3)

(57) [Claims] A main output shaft (6) is connected to a sub output shaft (12a) (12).
a) is rotatably fitted to form a concentric double shaft, and both output shafts (6), (12a) and (12a) are provided with opening holes formed on both side walls of the tilling case (1). 2) A support tubular portion (3a) formed on a detachable lid (3) (3) fixed to close the (2).
The main output shaft (6) is rotatably supported by being inserted into (3a), and the main output shaft (6) is linked to the main transmission mechanism (4) in the tilling case (1), and the sub output shafts (12a) (12a). Meshes drive gears (11) and (11) provided on an intermediate rotating shaft (5) interlocked with the main transmission mechanism (4) with passive gears (12) and (12) provided at ends of respective inner shafts. The main output shaft is driven by the sub transmission mechanism (GL) (GR)
(6), the both ends of the intermediate rotating shaft (5) supporting the driving gears (11) and (11) of the sub-transmission mechanism (GL) (GR) are The sub-transmission mechanism (GL) is supported on bearing supports formed on the lids (3) and (3).
(GR) gear train (11) (12), (11) (12)
Sub-output shafts (12a) (12a) (2a) protruding laterally from the support cylinders (3a) (3a). 12a) according to the second tiller
(13) (13) The first tilling cylinder (30) (30) with the main output shaft (6) projecting further laterally outward from the outer shaft end of the sub output shaft (12a) (12) A partially reversing rotary tillage device that is designed to rotate. 2. The secondary output shaft (12a) (12) is connected to the primary output shaft (6).
a) is rotatably fitted to form a concentric double shaft, and both output shafts (6), (12a) and (12a) are provided with opening holes formed on both side walls of the tilling case (1). 2) A support tubular portion (3a) formed on a detachable lid (3) (3) fixed to close the (2).
The main output shaft (6) is rotatably supported by being inserted into (3a), and the main output shaft (6) is linked to the main transmission mechanism (4) in the tilling case (1), and the sub output shafts (12a) (12a). Meshes drive gears (11) and (11) provided on an intermediate rotating shaft (5) interlocked with the main transmission mechanism (4) with passive gears (12) and (12) provided at ends of respective inner shafts. The main output shaft is driven by the sub transmission mechanism (GL) (GR)
(6), the both ends of the intermediate rotating shaft (5) supporting the driving gears (11) and (11) of the sub-transmission mechanism (GL) (GR) are The sub-transmission mechanism (GL) is supported on bearing supports formed on the lids (3) and (3).
(GR) gear train (11) (12), (11) (12)
Sub-output shafts (12a) (12a) (2a) protruding laterally from the support cylinders (3a) (3a). 12a) according to the second tiller
(13) (13) The first tilling cylinder (30) (30) with the main output shaft (6) projecting further laterally outward from the outer shaft end of the sub output shaft (12a) (12) In the partial reverse rotary tilling apparatus for rotating the rotary shaft, a dust seal (15) is interposed between the main output shaft (6) and the sub output shafts (12a) (12a) fitted to the main output shaft (6). And the secondary output shaft (12a) (1
A partially reversing rotary tilling device in which seals (17) are interposed between the support cylinders (2a) and the support cylinders (3a) (3a). 3. The main output shaft (6) is connected to the sub output shafts (12a) (12).
a) is rotatably fitted to form a concentric double shaft, and both output shafts (6), (12a) and (12a) are provided with opening holes formed on both side walls of the tilling case (1). 2) A support tubular portion (3a) formed on a detachable lid (3) (3) fixed to close the (2).
The main output shaft (6) is rotatably supported by being inserted into (3a), and the main output shaft (6) is linked to the main transmission mechanism (4) in the tilling case (1), and the sub output shafts (12a) (12a). Meshes drive gears (11) and (11) provided on an intermediate rotating shaft (5) interlocked with the main transmission mechanism (4) with passive gears (12) and (12) provided at ends of respective inner shafts. The main output shaft is driven by the sub transmission mechanism (GL) (GR)
(6), the both ends of the intermediate rotating shaft (5) supporting the driving gears (11) and (11) of the sub-transmission mechanism (GL) (GR) are The sub-transmission mechanism (GL) is supported on bearing supports formed on the lids (3) and (3).
(GR) gear train (11) (12), (11) (12)
Sub-output shafts (12a) (12a) (2a) protruding laterally from the support cylinders (3a) (3a). 12a) according to the second tiller
(13) (13) The first tilling cylinder (30) (30) with the main output shaft (6) projecting further laterally outward from the outer shaft end of the sub output shaft (12a) (12) In a partial reverse rotary tilling device that is driven to rotate, the auxiliary output shafts (12a) and (12)
The second tilling cylinders (13) and (13) rotatably driven by (a) are rotatably supported by bearings on the outer diameters of the support cylinders (3a) and (3a), respectively. (13) A partially reversing rotary tilling device in which the inside is separated from the inside of the cultivation case (1) as a separate room and independently lubricated with oil.