JP3606832B2 - Rotary tillage device - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention is a forward / reverse rotation in which a forward rotation claw shaft cylinder provided with a forward rotation tillage claw and a reverse rotation claw shaft cylinder provided with a reverse rotation tillage claw are formed at the lower part of a tillage transmission case extending rearward and downward from the traveling vehicle. The concentric bearings are horizontally installed in the transmission mechanism housing part, and the claw shaft cylinders are driven to rotate in a predetermined direction by the forward / reverse transmission mechanism housed in the forward / reverse transmission mechanism housing part, respectively, and rotate counterclockwise. Rotary rotary device (hereinafter referred to as a partial reverse rotation type rotary tiller) that suppresses dashing of the vehicle body by counteracting the counteracting force of the tiller and the reverse tiller nail Is.
[0002]
[Prior art]
Such a partial forward / reverse rotary tiller is already known, for example, from Japanese Utility Model Publication No. 4-3503.
[0003]
[Problems to be solved by the invention]
In the rotary tiller of the partial forward / reverse rotation type, the reverse tillage claw that rotates in the opposite direction (up cut direction) to the forward rotation claw that rotates in the forward rotation direction (down cut direction) is directed toward the vehicle body traveling direction. Therefore, the cultivated soil that is spun up by the reverse tillage claws tends to adhere to and accumulate on the front surface of the cultivating transmission case of the rotary cultivator. Since no action was taken against sedimentation, the amount of cultivated soil deposited and deposited on the front of the power transmission case became enormous in a relatively short period of time. There was a problem that a situation occurred that would prevent this.
[0004]
[Means for Solving the Problems]
The present invention has been made for the purpose of solving the above-mentioned problems by a simple means, and in order to achieve the object, a normal claw shaft cylinder (4) provided with a normal rotation tillage claw (16). Tillage transmission case (1) in which the reverse claw barrel (5) and (5) provided with (4) and the reverse tillage claw (18) extend rearward and obliquely downward from the mission case of the traveling vehicle (T). The concentric support is horizontally installed in the forward / reverse transmission mechanism housing portion (1A) formed in the lower part of the arm, and the claw shafts (4), (4), (5) and (5) are accommodated in the forward / reverse transmission mechanism housing. In the rotary tiller that is driven to rotate in a predetermined direction by the forward / reverse transmission mechanism housed in the section (1A), the tillage transmission case ( 1 ) is directly and integrally formed with the mission case of the traveling vehicle. and continuously provided, the tilling transmission Ke - reverse rotation transmission mechanism housing portion of the scan (1) above the tilling transmission than (1A) Ke - a scan of (1) the front edge (1a), forward and reverse rotation transmission Structure accommodating portion (1A) Ke - scan the leading edge Rutotomoni retract in contrast to (1b), Ke - scan tilling transmission Ke of the leading edge portion (1a) is retracted - lateral width of the scan (1) (1c ) Is formed to be narrower than the lateral width of the forward / reverse transmission mechanism housing portion ( 1A ) , and the forward / reverse transmission mechanism housing portion ( 1A ) is shifted from the case front edge ( 1b ) to the backward front edge ( 1a ) . portion corresponds located at the tip rotation locus (25) near said reverse tilling claws as viewed from the side (18), moreover, the tip portion of the reverse tilling claws (18), the front edge (1a) there is retracted and lateral width The rotary tiller is designed to rotate close to the left and right outer sides of the narrow part of the case.
[0005]
DETAILED DESCRIPTION OF THE INVENTION
Next, an embodiment of the present invention will be described with reference to the drawings. FIG. 1 is a transmission cross-sectional development view showing the main structure of the apparatus of the present invention, FIG. 2 is a schematic side view of the transmission section, and FIG. 1 is an overall side view of a field cultivator in which an inventive device is implemented.
[0006]
In FIG. 3, a cultivator (T), which is a traveling vehicle, transmits the power of an engine (9) mounted on a frame extending forward from a mission case via a transmission device in the mission case. The steering wheel (11) is configured to travel by driving the wheel (10) that is transmitted to the axle supported at the lower part of the case and rotationally drives the wheel (10) fitted to the axle, and extends the driving operation from the mission case. ) In the handle portion. A rotary tiller (R) can be detachably installed at the rear of the mission case.
[0007]
The tiller unit frame of the rotary tiller (R) includes a tillage transmission case (1) that is linked and connected to the power take-out part of the mission case, and a bead extending from its upper part. And a tilling cover (13) and the like, and a tilling depth setting device (12) such as a tail wheel is provided at the rear part of the tilling unit machine frame.
Then, the tilling transmission Ke - scan (1), as seen in FIG. 3, the mission Ke of vehicle (T) - directly and are integrally connected to the scan, the mission Ke of vehicle (T) The lower part of the tillage transmission case (1) is formed in a forward / reverse transmission mechanism accommodating portion (1A) for accommodating a later-described forward / reverse transmission mechanism.
[0008]
In the forward / reverse transmission mechanism housing portion (1A), a tilling shaft (3) orthogonal to the advancing direction is supported horizontally and horizontally, and the tilling shaft (3) is placed in the main body of the tillage transmission case (1). It is designed to be driven in the desired direction of rotation by the chain transmission mechanism (2) housed in the housing.
The chain transmission mechanism (2) includes a drive sprocket (14) pivoted on the top of the tillage transmission case (1), and a forward / reverse transmission mechanism housing (1A) below the tillage transmission case (1). ) And a passive sprocket (15) wedged around the central portion of the tilling shaft (3), and a chain (6) is hung, and in the illustrated example, it rotates in the forward rotation direction (counterclockwise direction A). It is supposed to be.
[0009]
Further, the tilling shaft (3) protrudes from the tillage transmission case (1) to the left and right, and the forward nail shaft cylinders (4) and (4) are directly mounted on the projecting end portion, and these are attached to the tilling shaft ( 3), the forward rotation tillage claws (16) are fixed in a predetermined arrangement on the outer periphery of each forward rotation claw barrel (4), and these forward rotations The tilling nail is driven into the soil by the down cut rotation (D).
[0010]
On the other hand, the bearing holder (17) provided with the inclined outer diameter part which inclines downward at a fixed angle with respect to the axial center of the said tilling axis | shaft (3) in the right and left both sides adjacent to a tilling transmission case (1). (17) is provided, and the reversing claw shafts (5) and (5) are rotatably mounted on the respective inclined outer diameter portions, and each reversing claw shaft (5) is connected to the chain transmission mechanism (2). With the reverse drive mechanism (8) constructed in conjunction with the rotary shaft, it is rotationally driven in the direction opposite to the forward claw shaft (4), that is, clockwise (B).
[0011]
Then, a reverse tillage claw (18) is arranged in a predetermined arrangement on the outer periphery of the reversing claw shafts (5) and (5) rotating around an axis inclined downward at a constant angle with respect to the axis of the tilling shaft (3). The reverse tillage claws (18) are configured to be obliquely driven into the soil immediately below the central transmission case (1) by the upcut rotation (U).
[0012]
That is, the reversing claw barrels (5) and (5) which are located on the left and right sides adjacent to the tillage transmission case (1) and rotate in the upcut direction, and the respective reversing claw barrels (5) (5) ) And the forward claw shaft cylinders (4) and (4) that are positioned substantially concentrically on the outer side in the axial center direction and rotate in the down cut direction. The tillage transmission case (1) is driven to rotate by the forward / reverse transmission mechanism (the lower part of the chain transmission mechanism 2 and the reverse drive mechanism 8) accommodated in the forward / reverse transmission mechanism accommodating portion (1A) at the bottom. The reverse rotation tillage claw (16) fixed to the normal rotation claw shaft (4) and the reverse rotation tillage claw (18) fixed to the reverse rotation claw shaft (5) (5) Dashing of the vehicle body is suppressed by the counteracting action of the tilling reaction force caused by driving in the soil.
[0013]
The reverse drive mechanism (8) is configured as follows in the embodiment shown in FIGS.
A rotary shaft (19) parallel to the tillage shaft (3) is mounted on the side of the tillage transmission case (1) in the vicinity of the tillage shaft (3), and a sprocket ( 7) Wedge, and the sprocket (7) is inwardly wound around the chain (6) and meshed with the slack side of the chain (6), and the passive sprocket (15) wedged on the tilling shaft In the same direction (A).
[0014]
Then, on both left and right sides of the sprocket (7), gears (20) and (20) are wedged on the rotary shaft (19), and the respective gears (20) and (20) are connected to the tilling shaft (19). To the driven gears (21) and (21) provided so as to be rotatably fitted to the bearing holder (17) and rotatably fitted to and supported by the inner diameter portion of the bearing holder (17), and each driven gear (21) ( The gears (22) and (22) provided at the outer end of the boss portion of 21) mesh with the receiving gear portions (23) and (23) formed on the inner diameter portion of the reverse claw shaft cylinder (5) (5). This constitutes the refractive transmission section.
Therefore, the power of the rotating shaft (19) rotating in the same direction as the tillage shaft (3) is the power of rotation opposite to the rotating direction of the tilling shaft through the gear (20), the driven gear (21), and the refractive transmission section. Is transmitted to the reverse claw barrel (5) (5).
[0015]
In addition, as shown in FIG. 2, the tillage transmission case (1) has the case leading edge (1a) above the forward / reverse transmission mechanism housing portion (1A) as the forward / reverse transmission mechanism housing portion. The left and right width (1c) of the tillage transmission case (1) of the portion where the case front edge (1a) is retracted and retracted relative to the case front edge (1b) of (1A), As shown in FIG. 1, the forward / reverse transmission mechanism housing portion (1 </ b> A) is formed to be narrower than the lateral width.
Further, (24) shows the tip rotation trajectory of the forward tillage claw fixed to the forward rotation pawl shaft cylinder, and (25) shows the tip rotation trajectory of the reverse tillage pawl fixed to the reverse rotation pawl shaft cylinder. The tip rotation trajectory (25) of the reverse tillage claw (18) mounted on the reverse claw shaft cylinder (5) (5) is in a side view with the case leading edge (1b) of the forward / reverse transmission mechanism housing portion (1A). It corresponds to the vicinity of the boundary with the case leading edge (1a) above it.
[0016]
Further, (24) in FIGS. 1 and 2 is a chain tension mechanism, and the illustrated one is an idle sprocket that meshes with the slack side of the chain (6) from the outside in the vicinity of the portion around the sprocket (7). A support shaft (28) provided with (27) is fitted into the support cylinder (29) so as to be able to advance and retreat, and the support shaft (28) is pushed in a direction in which the idle sprocket (27) is pressed against the chain (6). It has an automatic tension structure that is elastically biased by a spring (30). It should be noted that the automatic tensioning structure can adopt various deformation structures in addition to the illustrated ones, and the chain tensioning mechanism is not an automatic tensioning structure, but is provided as an operation adjustment structure that can adjust the tension / relaxation as required. However, there is no problem.
[0017]
4 and 5 show a modification, FIG. 4 is a developed sectional view of the transmission, and FIG. 5 is a schematic side view of the transmission structure.
This modification is different from that shown in FIGS. 1 to 3 in the specific structure of the reverse drive mechanism (8), and other parts are substantially the same as those in the embodiment shown in FIGS. Only the parts that differ from the embodiment of FIGS. 1 to 3 will be described using common reference numerals.
[0018]
In this modification, the sprocket (7) wedged at the center of the rotating shaft (19) is engaged with the slack side of the chain (6) from the outside, while also fulfilling the function as a chain tension mechanism. The rotation axis (3) is rotated in the direction (B) opposite to the rotation direction (A).
The sprocket (7) is wedged with another sprocket (31) (31) on the rotating shaft (19) on both the left and right sides of the sprocket (7). The portion corresponding to the driven gear (21) is formed on the driven sprockets (32) and (32), and the left and right sprockets (31), (32), (31), and (32) are respectively rotated by the reverse rotation chain (33). Thus, a reverse drive mechanism (8) is configured.
[0019]
In addition, the tilling depth setting device (12) provided in the tail part of the beam extending backward from the upper part of the tillage transmission case (1) is within the tillage width area tilled by the reverse tillage claw (18). Thus, the reverse tillage claw (18) is located at the rear rear side of the rotation range.
Therefore, the tilling depth setting device (12) shifts following the portion cultivated by the reverse tillage claw (18), and the cultivated soil cultivated by the reverse tilling claws (18) once moves away from the tilling depth setting device (12). It jumps up, moves along the tilling cover (13), and is thrown into the passing mark of the tilling depth setting device (12) through the upper portion of the tilling depth setting device (12).
[0020]
【The invention's effect】
The rotary tiller according to the present invention includes a forward claw shaft cylinder (4) (4) having a normal tillage claw (16) and a reverse claw shaft cylinder (5) (5) having a reverse tillage claw (18). Is mounted concentrically on the forward / reverse transmission mechanism housing part (1A) formed in the lower part of the tillage transmission case (1) extending diagonally downward from the mission case of the traveling vehicle (T). The claw shafts (4), (4), (5), and (5) are each driven to rotate in a predetermined direction by the forward / reverse transmission mechanism housed in the forward / reverse transmission mechanism housing portion (1A). in Tari cultivator, the cultivator transmission Ke - scan (1) of vehicle missions Ke - directly scan and then integrally connected, the plow transmission Ke - reverse rotation transmission mechanism housing portion of the scan (1) ( 1A) above the tilling transmission Ke than - scan the (1) the front edge (1a), Ke of forward and reverse rotation transmission mechanism housing portion (1A) - retracting in contrast to scan the leading edge (1b) Rutotomoni, Ke -The leading edge (1a) is behind Tilling transmission Ke of portions - scan (1) left-right width (1c) normal and reverse the left and right to form a narrower than the width of the transmission mechanism housing portion (1A) of the positive reversal transmission mechanism accommodating portion (1A) Ke - moiety to migrate to the edge (1a) before retracting from the scan leading edge (1b) corresponds located at the tip rotation locus (25) near said reverse tilling claws (18) viewed from the side, moreover, reversal tilling claws (18) Since the front end portion is configured to rotate close to the left and right outer sides of the case where the front edge ( 1a ) is retracted and the width is narrow , a partial reverse rotation type rotary tiller is connected. While the overall length of the vehicle body in the installed state is shortened as much as possible, a wide pocket portion is secured in front of the tillage transmission case (1) and the tilled soil that is flipped forward by the reverse tillage claws (18) is sown. The cultivated soil that has moved well and once jumped forward and moved backward along the cultivating cover (13) is the cultivating transmission key. The front edge (1a) Ri is Do and to pass through the portion becomes retracted and lateral width (1c) is narrow, the tip portion of the reverse tilling claws (18) that rotates in a position corresponding to that portion, tilling transmission Ke - scan (1) I cooperation with that act to scraped off the adhering cents to Kodo the leading edge of tilling transmission Ke - scan (1) that Kodo is thickened attached deposited before edge is reduced, vehicles and b - the normal progression of the Tali plow is prevented from become situation in impeded.
[Brief description of the drawings]
FIG. 1 is a developed sectional view showing a transmission structure of a device of the present invention.
FIG. 2 is a schematic side view of a transmission structure of the device of the present invention.
FIG. 3 is an overall side view of a field cultivator in which the device of the present invention is implemented.
4 is a developed sectional view showing a modified example of the transmission structure of the device of the present invention. FIG. 5 is a schematic side view of the modified transmission structure shown in FIG.
T traveling vehicle (cultivator)
DESCRIPTION OF SYMBOLS 1 Tillage transmission case 1A Forward / reverse transmission mechanism accommodation part 1a Case front edge 1b above forward / reverse transmission mechanism accommodation part Case front edge 1c Case front edge of forward / reverse transmission mechanism accommodation part retracted Case left and right width 4 Forward claw barrel 5 Reverse claw barrel 12 Plowing depth setting device 13 Tillage cover
16 Forward plow claw 18 Reverse plow claw 25 Reverse rotation trawl tip

Claims (1)

The forward rotation pawl shaft cylinders (4) and (4) with the forward tillage claws (16) and the reverse rotation pawl shaft cylinders (5) and (5) with the reverse rotation tillage claws (18) are connected to the mission car of the traveling vehicle (T). A concentric bearing is installed horizontally on the forward / reverse transmission mechanism housing part (1A) formed in the lower part of the tillage transmission case (1) extending obliquely downward from the rear, and the claw shaft cylinders (4) ( 4), (5), and (5) are rotary tillers that are driven to rotate in predetermined directions by the forward / reverse transmission mechanism accommodated in the forward / reverse transmission mechanism accommodating portion (1A) . (1) the vehicle mission Ke - scan directly and then integrally connected, the plow transmission Ke - scan (1) above the tilling transmission Ke than normal and reverse rotation transmission mechanism housing portion (1A) - scan the leading edge of the (1a) of (1), Ke of forward and reverse rotation transmission mechanism housing portion (1A) - scan the front edge Rutotomoni retract in contrast to (1b), Ke - part scan leading edge (1a) is retracted No Tillage Transmission Case (1) Right width (1c) forward reverse left to narrowly than the width of the transmission mechanism housing portion (1A), forward and reverse rotation transmission mechanism accommodating portion (1A) Ke - scan the leading edge (1b) before receding from the edge (1a ) portion to be migrated to a position corresponding to the tip rotation locus (25) near said reverse tilling claws (18) in side view, the addition, the tip portion of the reverse tilling claws (18), the front edge (1a) is retracted The rotary tiller is characterized in that it rotates in the vicinity of the case left and right outer surfaces of a portion having a narrow left and right width .

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