JP2002330602A - Rotary tillage device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a rotary tillage device of a partial normal and reverse rotation type responsive to a difference in field conditions such as the amount of grasses or straws and capable of performing always stabilized tillage. SOLUTION: This rotary tillage device is obtained by composing a tillage transmission system interlocking with the downstream side of transmission of a normal and reverse rotation changeover mechanism in a transmission mechanism equipped with two systems of transmission systems having different directions of rotations, mounting tillage tines for both uses of normal and reverse rotations on both a first tine shaft cylinder and a second tine shaft cylinder of a rotary tine shaft cylinder in the lower part of a tillage transmission case so as to provide the same rotation radius, driving the rotation of the first tine shaft cylinder with either one of the tillage transmission mechanisms and driving the rotation of the second tine shaft cylinder in the direction opposite to that of the first tine shaft cylinder with the other transmission system and enabling the changeover from a first tillage state in which the tillage tines for both uses of the normal and reverse rotations of the first tine shaft cylinder are normally rotated and the tillage tines for both uses of the normal and reverse rotations of the second tine shaft cylinder are reversibly rotated to a second tillage state in which the tillage tines for both uses of the normal and reverse rotations of the first tine shaft cylinder are reversibly rotated and the tillage tines for both uses of the normal and reverse rotations of the second tine shaft cylinder are normally rotated by the changeover of the normal and reverse rotation changeover mechanism.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION The present invention relates to a rotary claw shaft cylinder which is provided horizontally below a tilling transmission case which is connected to a transmission case of a cultivator, and which is provided beside a tilling transmission case. A first claw shaft cylinder disposed on the first portion and a second claw shaft tube concentrically disposed on a lateral side portion of the first claw shaft tube in the axial direction, and the second claw shaft tube of the rotary claw shaft tube is constituted. BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a partial reverse rotation type rotary tilling device in which a one-claw shaft cylinder and a second claw shaft cylinder are rotationally driven in opposite directions by a tilling transmission mechanism having two transmission systems having different rotation directions.

[0002]

2. Description of the Related Art A rotary claw shaft cylinder provided horizontally below a tilling transmission case is disposed on a lateral side of the tilling transmission case.
The claw shaft cylinder and a second claw shaft cylinder concentrically disposed on the lateral side of the first claw shaft cylinder in the axial direction, and the first and second claw shaft cylinders are rotated in the rotation direction. 2. Description of the Related Art There is known a rotary tilling device of a partially reversing type in which a tilling transmission mechanism having two different transmission systems is driven to rotate in opposite directions to each other (for example, Japanese Patent Publication No. 46-197).
Japanese Patent Laid-Open No. 39041, Japanese Utility Model Laid-Open No. 5-1 and Japanese Patent Laid-Open No. 5-5
No. 6703).

[0003]

In the rotary tilling apparatus of the partial reversal type as described above, the tilling reaction force of the cultivating claws mounted on the first and second claw shaft cylinders rotating oppositely to each other. Although it can be expected that the dashing of the aircraft is suppressed by the offsetting action, the conventional one cannot respond to the difference in the field conditions such as the amount of grass scattered in the field, so the stable tilling may be performed depending on the field conditions. There was a problem that it was difficult to perform. SUMMARY OF THE INVENTION It is an object of the present invention to provide a rotary tilling apparatus of a partial reversal type capable of coping with a difference in field conditions such as the number of grass straws and performing stable tilling.

[0004]

Means for Solving the Problems And the device of the present invention comprises:
In order to achieve the above object, the transmission case (1) is integrally connected to the transmission case (5) and the tillage transmission case (1).
At the lower part of (5), the axle of the traveling wheel (7) is mounted on the tilling transmission case.
In a cultivator in which a rotary claw shaft cylinder is supported at the lower part of (1), a tilling output shaft (11) interlocking with a transmission mechanism in the transmission case (5) and a tilling output shaft (11) are mounted. A forward / reverse switching mechanism comprising a forward / reverse switching body (19) and a forward / reverse transmission train selectively coupled to the forward / reverse switching body (19);
(C) from the upper part of the tilling transmission case (1) to the mission case
(5), the tilling transmission mechanism in the tilling transmission case (1) interlocking with the lower transmission side of the forward / reverse switching mechanism (C) is provided with two transmission systems (A) and (B) having different rotation directions. ), And the rotary claw shaft cylinder, which is provided laterally below the tilling transmission case (1), is disposed on the side of the tilling transmission case (1). A first claw shaft tube (2) and a second claw shaft tube (4) disposed concentrically on the lateral side of the first claw shaft tube (2) in the axial direction; Both forward and reverse tilling claws (25) and (24) are mounted on both the second and second claw shaft cylinders (4) so that the rotation diameters are the same, and the first claw shaft cylinder (2) of the rotary claw shaft cylinder is provided. ) Is rotationally driven by one transmission system (B) of the tilling transmission mechanism, and the second pawl shaft cylinder (4) is connected to the first pawl shaft cylinder (2) by the other transmission system (A) of the tilling transmission mechanism. By rotating and driving in the opposite direction, the forward / reverse switching mechanism (C)
Switching of the first claw shaft cylinder (2) for both forward and reverse rotation of the tilling claw (25)
Is rotated forward and the forward / reverse cultivating claw (24) of the second claw shaft barrel (4) is reversed, and the forward / reverse cultivating claw (25) of the first claw barrel (2) is reversed. Forward / reverse tilling claw of the second claw shaft cylinder (2)
(24) can be converted into a second tilling state in which the rotation is forward, and the upper part of the rotation zone of the forward / reverse dual-purpose tilling claw (25) (24) which is converted into the first tilling state and the second tilling state. The covered cultivator covers the forward / reverse switching mechanism (C) with the forward / reverse cultivator.
(25) It is characterized in that it is isolated from the rotating circle of (24).

[0005]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the present invention will be described with reference to the drawings. FIGS. 1 to 3 show a rotary tilling apparatus for a center drive type cultivator having a residual cultivation claw shaft cylinder. 4 shows a configured example.

1 to 3, the cultivator has an engine (6) mounted on a frame extending from a transmission case (5), and the power of the engine (6) is transmitted to the transmission case.
(5) The right and left wheels (7) which are transmitted to the axle supported at the lower part of the transmission case (5) via the transmission mechanism in (5) and fitted to the axle.
(7) is configured to be driven by rotation. The driving operation is performed on the handle of the steering handle (8) extending backward from the mission case (5), and is performed at the rear of the mission case (5) and on the steering handle (8). A rotary tillage device is installed below.

[0007] The rotary tiller is a mission case.
A tilling transmission case (1) integrally connected to (5), a cultivator frame (9) such as a cultivator cover, and a cultivation depth setting to be installed at a rear end of the cultivator frame (9). A first claw shaft cylinder (2) and a first claw shaft (2) arranged at the lower side of the tilling transmission case (1), which are constituted by a device (10) and the like, are arranged below the tilling transmission case (1). Claw shaft tube (2)
Second claw shaft cylinder (4) concentrically arranged on the lateral side in the axial direction of the shaft
The rotary claw shaft cylinder is rotatably supported laterally.

A second pawl shaft barrel of the rotary pawl shaft barrel (4)
Is driven by the second transmission system (A) of the tilling transmission mechanism interlocked with the transmission mechanism in the transmission case (5), and by the first claw shaft cylinder.
(2) is driven by the first transmission system (B) of the tilling transmission mechanism so that the second claw shaft tube (4) and the first claw shaft tube (2) are rotationally driven in directions opposite to each other. Has become.

The second pawl shaft barrel of the rotary pawl shaft barrel (4)
Is formed longer than the first claw shaft tube (2) in comparison with the first claw shaft tube (2) arranged on the side of the tilling transmission case (1);
Both forward and reverse tilling claw mounted on the long second claw shaft cylinder (4)
(24) The tillage width of the group is set to be larger than the sum of the tillage widths of the forward and reverse tilling claws (25) mounted on the first claw shaft cylinder (2) (particularly, , FIG. 4). In addition, the forward and reverse bidirectional tilling claw (2) mounted on the second claw shaft cylinder (4).
4) and the forward / reverse cultivating claw (25) mounted on the first claw shaft cylinder (2) are provided so as to have the same rotation diameter as shown in FIG.

The first pawl shaft cylinder (2) of the rotary pawl shaft cylinder and the first transmission system (B) for driving the pawl shaft cylinder (2) to rotate, and the same pawl as the second pawl shaft cylinder (4) A specific configuration example of the second transmission system (A) that rotationally drives the barrel (4) is shown in FIGS. Figure 2
In FIG. 3, from the support cylinders (23) and (23) through the center of the support cylinders (23) and (23) provided on the lower left and right sides of the tilling transmission case (1). Rotating shaft extending outward
(3) is supported by bearings in a horizontal and horizontal direction perpendicular to the body traveling direction, and the first claw shaft cylinders (2) and (2) are provided on the inclined outer diameter portions of the left and right support cylinder parts (23) and (23). Each of the rotation shafts (3), which are rotatably provided and extend outward from the left and right support cylinders (23) and (23), is provided with a lower portion than the first claw shaft cylinders (2) and (2). The long second claw shaft cylinders (4) and (4) are detachably fitted and fixed respectively.

The second transmission system (A) for rotatingly driving the second claw shaft cylinders (4) (4) is wedge-fitted to the rotation shaft (3) in the tilling transmission case (1). Tillage output shaft mounted horizontally on the upper part of the passive sprocket (21) and tillage transmission case (1)
Chain (2) with upper sprocket (20) provided in (11)
The chain transmission mechanism (13) is wound around 2).

The first transmission system (B) for rotating the first claw shaft barrels (2) (2) is configured as follows. That is, a sprocket (27) is wedge-attached to an intermediate rotating shaft (26) parallel to the rotating shaft (3), and the sprocket (27) is wound inside the winding of the chain (22) of the second transmission system (A). In the chain (22)
At the left and right sides of the sprocket (27) and the gear (28) on the intermediate rotation shaft (26).
(28) is fitted and fixed, and each of the gears (28) and (28) is rotatably fitted on the rotating shaft (3), and is rotatably fitted on the supporting cylinder (23) (23). The driven gears (29) (29) provided are always in mesh with each other, and the gears (30) (30) formed at the outer end of the boss portion of each driven gear (29) (29) are A first transmission system (B) is formed by meshing with passive gears (31) and (31) formed on the inner diameters of the barrels (2) and (2), respectively.
In addition, (32) in the figure is a chain tension mechanism.

Therefore, the first pawl shaft barrels (2) and (2) driven to rotate by the first power transmission system (B) and the tilling claws for both forward and reverse rotation mounted on the same pawl shaft cylinders (2) and (2). (25) is the second transmission system
(A) The second claw shaft barrel (4) (4) driven by rotation and the forward / reverse cultivating claw (25) mounted on the claw shaft barrel (4) (4)
Rotates in the opposite direction to the direction of rotation.

As shown in FIG. 2, a forward / reverse switching mechanism (C) is provided in the upper transmission portion of the second transmission system (A). 2
The rotation directions of both the transmission system (A) and the first transmission system (B) can be simultaneously switched. That is, the first
The forward and reverse tilling claw (25) mounted on the claw barrel (2) rotates in the forward direction (the same direction as the left and right wheels during forward movement), and the forward and reverse rotation mounted on the second claw barrel (4). The first tilling state in which the two-way tilling claw (24) group rotates in the reverse direction (the direction opposite to the left and right wheels at the time of forward movement), and the forward and reverse dual-purpose tilling claw mounted on the first claw shaft cylinder (2).
(25) Group reverse direction (opposite to left and right wheels during forward movement)
Forward and reverse tilling claw mounted on the second claw shaft cylinder (4)
(24) The group can be switched to the second tilling state in which the group rotates in the normal rotation direction (the same direction as the left and right wheels during forward movement).

The forward / reverse switching mechanism (C) shown is constructed as follows. A tilling output shaft (11) protruding laterally from the transmission case (5) is mounted laterally on an upper part of the tilling transmission case (1), and the tilling output shaft (11) is mounted on the tilling transmission case. It extends through an upper part of the case (1) and into a storage case (12) attached to the opposite side of the tilling transmission case (1). The upper sprocket of the second transmission system (A) is mounted on the tilling output shaft (11) inside the tilling transmission case (1).
(20) is fitted in the idle state.

In the housing case (12), a gear (15) that rotates freely with respect to the tilling output shaft (11).
And a sprocket (16) are provided at a predetermined interval in the axial direction, and the gear (15) and the sprocket (16) are provided.
A forward / reverse switching body (19) slidably attached to the tilling output shaft (11) is provided between the forward and reverse switching body (1).
The gear (15) and the sprocket (16) are selectively connected to the tillage output shaft (11) by sliding the shaft (9) in the axial direction with a shift lever (not shown in the drawing) shown in FIG. The gear (15) has a housing case (1).
An intermediate gear (18) provided on an idle shaft (14) supported by a bearing in (2) is always engaged with the sprocket (16).
And a passive sprocket provided on the idle shaft (14)
(17) is chained.

The forward / reverse switching body (19) is connected to the gear.
(15), the rotation of the tilling output shaft (11) is transmitted to the upper sprocket via the forward / reverse switching body (19) and the gear (15).
(20) Direct forward rotation transmission and forward / reverse switching body
When the (19) is connected to the sprocket (16), the rotational power of the tilling output shaft (11) is rotated by the forward / reverse switching body (19), the sprocket (16), the chain, the passive sprocket (17), and the idle shaft (14). ), The reversely transmitted to the gear (15) via the intermediate gear (18), and the gear (15) rotating in the opposite direction drives the upper sprocket (20) in the opposite direction.

In the embodiment shown in FIGS. 1 to 3, the forward / reverse switching mechanism (C) is provided above the tilling transmission case (1), but is provided on the transmission case (5). Is also good. Further, the specific configurations of the second transmission system (A) and the first transmission system (B) of the tilling transmission mechanism are not limited to those shown in the figure, but the point is that the second claw shaft cylinder (4) and As long as the first claw shaft cylinder (2) can be rotationally driven in reverse, any other modified structure may be used. Further, in the embodiment of FIGS. 1 to 3, the first claw shaft tube (2) is provided as an inclined claw shaft tube for residual cultivation.
The first claw shaft barrel (2) may be provided in a horizontal state in which the axis of the first claw shaft barrel (4) coincides with the axis.

FIG. 4 shows an example in which the present invention is applied to a side drive type rotary tilling apparatus. That is, of the first claw shaft tube (2) and the second claw shaft tube (4), which are driven to rotate in opposite directions by the two transmission systems (A) and (B) of the tilling transmission mechanism, the short first first shaft tube is used. The claw shaft cylinders (2) and (2) are arranged at the portions adjacent to the left and right tilling transmission cases (1) and (1).
A long second pawl shaft cylinder (4) is disposed between the pawl shaft cylinders (2) and (2) to form a side drive type rotary pawl shaft cylinder. Also in this case, the first claw shaft cylinders (2) and (2) disposed adjacent to the tilling transmission cases (1) and (1) are inclined similarly to the embodiment of FIGS. And each of the first claw shaft cylinders
(2) The tillage transmission case (1) located outside of (2) or the remaining tillage treatment below the support frame may be performed.
The embodiment of the present invention is not limited to the cultivator, but can also be applied to an axle-type working machine such as a management machine that shares the axle as a cultivating drive shaft.

[0020]

Since the apparatus of the present invention is constructed as described above, when cultivating a field with a lot of straw, it is located at the side of the tilling transmission case (1). The forward / reverse cultivation claw (25) of the first claw shaft cylinder (2) is rotated forward and the first claw shaft cylinder is rotated.
Working in the first tilling state where the forward / reverse cultivating claw (24) of the second claw shaft cylinder (4) located on the lateral side in the axial center direction of (2) is reversed, the tilling transmission case (1) below. The reversible cultivation claw (25) of the first claw shaft cylinder (2) while reducing the hugging of grass straw etc.
And the second claw shaft cylinder (4) can properly exert the deashing inhibiting force due to the reciprocal rotation of the forward / reverse tilling claw (24), thereby performing stable tilling. And even if work is performed in any of the first tilling state and the second tilling state, the tilling depth does not change and the tilling can be tilled in a good state in which the entire tilling depth is uniform. In addition, the forward / reverse cultivating claw (25) of the first claw shaft cylinder (2) rotates forward and the forward / reverse cultivating claw of the second claw shaft cylinder (4).
The first tilling state where (24) is reversed, the forward / reverse cultivating claw (25) of the first claw shaft cylinder (2) is reversed, and the forward / reverse cultivating claw (24) of the second claw shaft cylinder (2) is forward. A forward / reverse switching mechanism (C) that can be switched to the second rotating tillage state while switching the tillage is located in the upper part of the tillage transmission case (1) or in the transmission case (5). Tilting claw for both forward and reverse rotation with cover (25)
Since it is isolated from the rotation zone of (24), the tilling drive case
(1) The lower part is compact and compact, so that the power transmission case (1) is advantageous for the remaining tillage treatment below.
The switching operation to the tilling state can be advantageously performed without being affected by grass, soil, and the like.

[Brief description of the drawings]

FIG. 1 is a side view of a tiller having a rotary tiller to which the present invention is applied.

FIG. 2 is a partial sectional view showing a main part of a rotary tillage device according to the present invention.

FIG. 3 is a side sectional view showing a part of a transmission portion of the rotary tillage device according to the present invention.

FIG. 4 is a schematic view showing another embodiment of the present invention.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Tilling transmission case 2 1st claw shaft cylinder 4 2nd claw shaft cylinder 11 Tillage output shaft 19 Forward / reverse switching body A 2nd transmission system B 1st transmission system C Forward / reverse switching mechanism 24 Both forward / reverse cultivating claw 25 Forward Reverse dual use tillage claw

Claims (1)

[Claims] 1. A tilling transmission case for a mission case (5).
The axle of the traveling wheel (7) is supported at the lower part of the transmission case (5) and the rotary claw shaft cylinder is supported at the lower part of the tilling transmission case (1) by integrally connecting (1). In a cultivator, a tilling output shaft (11) interlocked with a transmission mechanism in the transmission case (5).
And forward / reverse switching body (19) mounted on the tilling output shaft (11)
A forward / reverse switching mechanism (C) comprising a forward / reverse transmission train and a forward / reverse transmission train selectively coupled to the forward / reverse switching body (19) is connected to the upper part of the tilling transmission case (1) through the transmission case (5). ) Section,
The tilling transmission mechanism in the tilling transmission case (1) interlocking with the lower transmission side of the forward / reverse switching mechanism (C) is configured as a transmission mechanism equipped with two transmission systems (A) and (B) having different rotation directions. And a first claw shaft cylinder (2) in which the rotary claw shaft cylinder provided laterally below the tilling transmission case (1) is disposed on a lateral side of the cultivation transmission case (1). And a second claw shaft tube (4) concentrically arranged on the lateral side of the first claw shaft tube (2) in the axial center direction. The first claw shaft tube (2) and the second claw shaft tube Attach both forward and reverse tilling claws (25) and (24) so that the rotation diameter is the same on both sides of (4), and attach the first claw shaft cylinder (2) of the rotary claw shaft cylinder to one of the tilling transmission mechanisms. And the second transmission shaft (4) is driven in the opposite direction to the first transmission shaft (2) by the other transmission system (A) of the tilling transmission mechanism. Thus, the first forward / reverse switching mechanism (C) is switched to the first
A first tilling state in which the forward / reverse cultivating claw (25) of the claw shaft barrel (2) rotates forward and a forward / reverse cultivating claw (24) of the second claw shaft barrel (4) reverses; (2) The two-way tilling claw (25) of the second claw shaft cylinder (2) can be converted to the second tilling state in which the forward and reverse cultivating claw (24) of the second claw shaft cylinder (2) rotates forward and reverse. Forward / reverse dual-purpose tilling claw (25) that is converted into a first tilling state and a second tilling state
The tilling cover for covering the upper part of the sphere of rotation of (24) is adapted to isolate the forward / reverse switching mechanism (C) from the sphere of rotation of the forward / reverse cultivating claw (25) (24). Rotary tillage equipment.