JP2017184620A - One way type tilling device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To further improve straightness of a tractor in which a tilling device is connected and used without increasing weight by the weight in the tilling device.SOLUTION: In the position at the front side in the traveling direction from the drive disk 16of the tail in the traveling direction among multiple drive disks 16to 16and at the inside in the width direction of a connection frame 12 perpendicularly disposed to the traveling direction, disks 22, 22becoming the direction of an inverse phase to the multiple disks 16to 16are provided, and thereby the force in the lower direction by the own weight of a tilling device 100 is made to be applied to the disks 22, 22relatively greatly. Consequently, deep plowing is secured by the disks 22, 22even in the hard soil, and the sufficiently great resistance force to the lateral force generated via the drive disks 16to 16disposed diagonally can be obtained.SELECTED DRAWING: Figure 1

Description

  The present invention relates to a one-way tilling device, and more particularly, to a one-way tilling device in which a plurality of driving disks are provided on one driving shaft that is connected to the rear of an agricultural vehicle and arranged obliquely with respect to the traveling direction. And suitable.

  2. Description of the Related Art Conventionally, in a farm working machine that is used by being connected to the rear of an agricultural vehicle such as a tractor, there is a tilling device that includes a plurality of drive disks that are curved with a predetermined curvature on a drive shaft that is disposed obliquely with respect to the traveling direction. Are known. There are two types of this type of tilling device: a two-way type and a one-way type.

  The two-way type has a total of three axes, two left and right axes with a bend angle and a middle axis connecting them, and a plurality of drive disks are mounted on each of the two left and right drive axes arranged obliquely with respect to the traveling direction. They are arranged symmetrically. On the other hand, the one-way type has only one drive shaft arranged obliquely with respect to the traveling direction, and the structure is simpler than the two-way type. One-way tillage devices are particularly in demand as field tillers.

  Since the drive shaft is disposed obliquely, when the tractor is advanced with the drive disk penetrating into the soil, the tilling device receives a lateral force via the drive disk. This lateral force is a first force in the lateral direction that is a component of the force generated diagonally forward by the resistance that the drive disk facing in the diagonal direction receives from the soil when the tractor moves forward, This is the resultant force with the second force in the lateral direction, which is a component of the force generated obliquely forward by driving of the drive disk itself. In the case of the two-way type, since the drive disk is disposed symmetrically with respect to the two left and right axes, the lateral force is canceled out. On the other hand, in the case of the one-way type, since the lateral force is received only in one direction, the straight traveling performance of the tractor is hindered.

  Accordingly, a tilling device has been devised in which a coulter or the like is provided to receive the lateral force to improve the straight traveling performance of the tractor (see, for example, Patent Documents 1 to 3).

  In the tilling device described in Patent Document 1, a stabilizing wheel that is inclined forward toward the inner side of the machine body is provided at one end of the frame rod parallel to the drive shaft that is disposed obliquely and obliquely rearward. This stabilizing wheel has a disk part and a pair of truncated cone parts protrudingly provided on both the front and back surfaces of the disk part. The disc part bites into the ground and the frustum parts on both sides come in contact with the ground surface, so that the reaction force of tillage resistance generated in the drive disk can be received and the straightness of the tractor can be maintained. .

  In the tilling device described in Patent Document 2, an uncultivated land penetrating disk coulter that is adjustable in angle in the traveling direction is provided for the frame immediately before the drive disk. In the tilling device described in Patent Document 2, when the tail wheel is provided at the rear of the drive disk, the tail wheel only penetrates shallowly into the already cultivated land. It was devised in order to solve the problem that the power of the tractor is generated in the tractor. By providing a coulter so as to penetrate the uncultivated land in front of the drive disk, the support force by penetration into the soil is increased.

  In the tilling device described in Patent Literature 3, a grounding wheel having an inclination angle with respect to the ground is disposed on the rear wheel side of the tilling device and in the front direction. Thus, in addition to maintaining the straightness of the tractor, it is possible to solve the problem that uncultivated land remains when the grounding wheel is arranged at the position of the rearmost part of the drive disk. In the tilling device described in Patent Document 3, since the grounding wheel is disposed at the same position as that of Patent Document 2, the grounding wheel is compared with the case where the grounding wheel is disposed at the rearmost position of the drive disk. Support capacity by penetration into the ground of the.

Japanese Utility Model Publication No. 60-28804 Japanese Utility Model Publication No. 60-106401 Japanese Utility Model Publication No. 60-174501

  As described above, a coulter or the like provided for receiving a force acting in the lateral direction has a structure for obtaining a supporting force by penetrating into the soil. Here, the force for pushing the tilling device downward is obtained only from the own weight of the tilling device. However, the one-way tillage device is lighter than the two-way method because of its simple structure. Therefore, especially when the soil is hard, the bite into the soil such as a coulter becomes shallow and the grounding load may be insufficient, and the straightness cannot be improved.

  Even with a one-way tilling device, it is conceivable to increase the mass of the device in order to ensure deep plowing. However, when the one-way tilling device is connected to a small tractor and used, the lift of the lifting device for raising and lowering the tilling device is small. Therefore, if the mass of the tilling device is increased too much, the raising and lowering cannot be performed. Therefore, there is a limit to the weight increase due to the weight. In the case of a small tractor, the mass of the tractor itself is light, so that the resistance force of the tractor itself against the lateral force becomes small, and it is difficult to ensure high straightness.

  In the tilling devices described in Patent Documents 2 and 3, since a coulter or the like is provided in front of the drive disk in the traveling direction, the coulter or the like penetrates into uncultivated soil. Therefore, when a one-way tillage device is connected to a small tractor and used on farmland where the soil is hard, even if a coulter or the like is provided in front of the drive disk as in Patent Documents 2 and 3, it penetrates into the soil. However, there is a problem that sufficient support force cannot be obtained due to a shortage of traction, and the straightness of the tractor cannot be improved sufficiently.

  The present invention has been made to solve such a problem, and can further improve the straightness of a tractor that is used by connecting the tilling device without increasing the weight of the tilling device by a weight. The purpose is to be able to.

  In order to solve the above-described problems, in the present invention, a plurality of drive disks are connected to a link member for connecting the agricultural vehicle and the tilling device on the front side in the advance direction with respect to the drive disk at the end in the advance direction. In addition, an annular ring having a phase opposite to that of the plurality of disks is provided at a position on the inner side in the width direction of the connecting frame arranged perpendicular to the traveling direction of the agricultural vehicle.

  The tilling device connected to the agricultural vehicle has a downward force due to the weight of the tilling device with the connection point with the agricultural vehicle as a fulcrum, but according to the present invention configured as described above, Since an anti-phase ring is provided at a position closer to the fulcrum and closer to the center of gravity in the width direction, the downward force due to the weight of the tilling device is compared with the ring. Takes a lot of effort. Therefore, it is possible to ensure deep plowing with a circular ring even in hard soil, and to obtain a sufficiently large resistance against a lateral force generated via an obliquely arranged drive disk. Thereby, the straight running property of the tractor which connects and uses the said tilling apparatus can be improved more, without increasing the weight of a tilling apparatus with a weight.

It is a top view which shows the structural example of the one-way type tilling apparatus by 1st Embodiment. It is a side view which shows the structural example of the one-way type tilling apparatus by 1st Embodiment. It is a perspective view which shows the structural example of the one-way type tilling apparatus by 1st Embodiment. It is an expansion perspective view which shows the structural example of the support mechanism by this embodiment, and a reverse phase disk. It is a side view which shows the other structural example of the one-way type tilling apparatus by 1st Embodiment. It is a top view which shows the structural example of the one-way type tilling apparatus by 2nd Embodiment. It is a side view which shows the structural example of the one-way type tilling apparatus by 2nd Embodiment. It is a side view which shows the other structural example of the one-way type tilling apparatus by 2nd Embodiment. It is a top view which shows the structural example of the one-way type tilling apparatus by 3rd Embodiment. It is a perspective view which shows the structural example of the one-way type tilling apparatus by 3rd Embodiment. It is an expansion perspective view which shows the structural example of the one-way type tilling apparatus by 3rd Embodiment. It is a top view which shows the structural example of the one-way-type tilling apparatus by other embodiment. It is a top view which shows the structural example of the one-way-type tilling apparatus by other embodiment.

(First embodiment)
DESCRIPTION OF EXEMPLARY EMBODIMENTS Hereinafter, a first embodiment of the invention will be described with reference to the drawings. 1 to 3 are diagrams showing a configuration example of a one-way tilling device 100 according to the first embodiment, in which FIG. 1 is a plan view, FIG. 2 is a side view, and FIG. 3 is a perspective view.

The tilling device 100 according to the present embodiment is connected to a rear side of a tractor (an example of an agricultural vehicle) 200 and has a plurality of drive disks 16 _{-1 to} 16 _-6 on a drive shaft 17 disposed obliquely with respect to the traveling direction of the tractor 200. Is a one-way tillage device. The tilling device 100 of this embodiment is connected to the tractor 200 by three-point links 11a to 11c (corresponding to the link member of the present invention). The three-point links 11a to 11c are constituted by left and right lower links 11a and 11b and a middle upper link 11c.

  The left and right lower links 11a and 11b are connected to a position separated by a certain distance in the left-right direction from the center of the connection frame 12 arranged perpendicular to the traveling direction of the tractor 200. Further, the middle top link 11 c is connected to a hitch 13 erected upward at the center of the connection frame 12. The three-point links 11a to 11c are rotatable in the vertical direction with a connection point with the tractor 200 as a fulcrum.

  Two side frames 14 a and 14 b parallel to the traveling direction (perpendicular to the coupling frame 12) are provided at both ends of the connecting frame 12 from the both ends toward the rear side in the traveling direction of the tractor 200. . The right side frame 14a is shorter than the left side frame 14b.

  A tilling frame 15 is provided at the other end of the left and right side frames 14a, 14b. As described above, since the lengths of the left and right side frames 14 a and 14 b are different, the tilling frame 15 is arranged obliquely with respect to the traveling direction of the tractor 200.

Below the tilling frame 15, a drive shaft 17 arranged in parallel with the tilling frame 15 is provided. Further, a plurality of drive disks 16 _{-1 to} 16 _-6 curved with a predetermined curvature are arranged on the drive shaft 17 at equal intervals. The drive disks 16 _{-1 to} 16 _-6 are rotated by the power transmitted through the drive shaft 17. These drive disks 16 _{-1 to} 16 _-6 are arranged so that the concavely depressed face surface faces the front direction, and the tip part faces the traveling direction. Thereby, it is possible to prevent excessive force from being applied to the drive disks 16 _{-1 to} 16 _-6 during cultivation.

The power for rotating the drive disks 16 _{-1 to} 16 _-6 is transmitted from the tractor 200 to the drive shaft 17 through the PTO shaft 10, the drive shafts 18 a and 18 b, the gear box 19 and the chain 20. That is, the PTO shaft 10, the drive shafts 18a and 18b, the gear box 19, the chain 20, and the drive shaft 17 constitute a drive force transmission mechanism. Based on the driving force transmitted by the transmission mechanism, the driving disks 16 _{-1 to} 16 _-6 rotate while penetrating into the soil, so that the surface layer portion of the soil becomes the driving disks 16 _{-1 to} 16 _-6. And the cut soil is inverted along the curved face surfaces of the drive disks 16 _{-1 to} 16 _-6 .

In the first embodiment, among the plurality of drive disks 16 _{-1 to} 16 _-6 , at a position on the front side in the travel direction with respect to the last drive disk 16 _{-6 in the} travel direction and on the inner side in the width direction of the connecting frame 12, Rings 22 _-1 and 22 _-2 are provided in opposite phases to the plurality of disks 16 _{-1 to} 16 _-6 . In the first embodiment, a rotating disk having a predetermined curvature is provided as an example of a circular ring (hereinafter referred to as an antiphase disk). The degree of curvature of the antiphase disks 22 _-1 and 22 _-2 may be the same as or different from that of the drive disks 16 _{-1 to} 16 _-6 .

Here, the direction of the antiphase is an angle of 0 degrees or less, preferably an angle of 0 degrees or less when the angle at which the plurality of drive disks 16 _{-1 to} 16 _-6 are tilted to the left with respect to the traveling direction of the tractor 200 is a positive angle. Means a direction that forms a negative angle (an angle tilted to the right with respect to the traveling direction). The magnitude of the negative angle formed by the antiphase disks 22 _-1 and 22 _-2 may be the same as or different from the positive angle formed by the drive disks 16 _{-1 to} 16 _-6 .

Further, the anti-phase disks 22 _-1 and 22 _-2 are attached such that the concavely depressed face surface is opposite to the drive disks 16 _{-1 to} 16 _-6 . Although the antiphase disks 22 _-1 and 22 _-2 may be mounted so that the face surface is in the same direction as the drive disks 16 _{-1 to} 16 _-6 , it is preferable to have the reverse direction.

In the first embodiment, the specific positions where the antiphase disks 22 _-1 and 22 _-2 are provided are positions on the front side in the traveling direction from the connecting frame 12 and inside the left and right lower links 11a and 11b. . In the example of FIG. 1, two support mechanisms 21 _-1 and 21 _-2 are erected from the connection frame 12 toward the front in the traveling direction, and two reverse mechanisms 21 _-1 and 21 _-2 are provided via the two support mechanisms 21 _-1 and 21 _-2. Phase disks 22 _-1 and 22 _-2 are provided. The antiphase disks 22 _-1 and 22 _-2 are preferably provided as close to the center as possible in the width direction.

FIG. 4 is an enlarged perspective view showing a configuration example of the support mechanisms 21 _-1 and 21 _-2 and the antiphase disks 22 _-1 and 22 _-2 . As shown in FIG. 4, the support mechanisms 21 ₋₁ and 21 ₋₂ include a support plate 31 attached to the connection frame 12, a bracket 32, a support shaft 33 that connects the support plate 31 and the bracket 32, and a bracket. A rotation shaft 34 rotatably supported by 32 and a suspension 35 are provided. Then, the antiphase disks 22 _-1 and 22 _-2 are attached to the rotating shaft 34. Thus, reverse phase disk 22 _-1, 22 _-2 When the tractor 200 moves while penetrating in the soil, antiphase disk 22 _-1, 22 _-2 rotates by receiving resistance from the soil.

As shown in FIG. 2, the diameter of the drive disk 16 _-1 to 16 _-6, reverse phase disk 22 _-1, the diameter of _22-2 is substantially the same. The height of the drive shaft 17 of the drive disks 16 _{-1 to} 16 _-6 and the height of the rotary shaft 34 of the antiphase disks 22 _-1 and 22 _-2 are substantially the same. As a result, the drive disks 16 _{-1 to} 16 _-6 and the antiphase disks 22 _-1 and 22 _-2 penetrate into the soil to substantially the same depth.

As described above, in the first embodiment, the traveling direction end of the traveling direction front side in than the drive disk 16 _-6, and, the connection frame 12 widthwise inner position in opposite phase disk 22 _-1, 22 _{- 2} is provided. More specifically, the antiphase disks 22 _-1 and 22 _-2 are provided at positions ahead of the connecting frame 12 in the traveling direction and inside the left and right lower links 11a and 11b.

For this reason, since the antiphase disks 22 _-1 and 22 _-2 are sufficiently subjected to the downward force due to the weight of the tilling device 100, it is possible to avoid insufficient penetration even in hard soil. That is, a downward force is applied to the tilling device 100 connected to the tractor 200 by the weight of the tilling device 100 with the connection point with the tractor 200 as a fulcrum. In the present embodiment, the antiphase disks 22 _-1 and 22 _-2 are provided at positions closer to the fulcrum in the traveling direction and closer to the center of gravity in the width direction. Compared with the case where it is provided at a position far away from the center of gravity, a downward force is applied to the antiphase disks 22 _-1 and 22 _-2 relatively large.

Therefore, even in hard soil such as paddy fields, deep plowing can be ensured by the antiphase disks 22 _-1 and 22 _-2 , and the lateral direction generated through the drive disks 16 _{-1 to} 16 _-6 disposed obliquely is ensured. A sufficiently large resistance to the force can be obtained. Thereby, even if it does not increase the weight of the tilling device 100 by the weight, the straightness of the tractor 200 that is used by connecting the tilling device 100 can be further improved.

In particular, in the first embodiment, since two anti-phase disks 22 _-1 and 22 _-2 are provided, the resistance force against the lateral force can be further increased. Moreover, in 1st Embodiment, the rotating disk which has a curvature instead of a flat plate like the coulter described in patent documents 1-3 is provided in the antiphase. For this reason, when the antiphase discs 22 _-1 and 22 _-2 are rotated, the force is opposite to the lateral (leftward) force generated by the penetration of the drive discs 16 _{-1 to} 16 _{-6 into} the soil ( It is possible to positively generate a resistance force in the right direction), and the generated force can cancel the lateral force.

In the first embodiment, the diameters of the drive disks 16 _{-1 to} 16 _{-6 and} the diameters of the antiphase disks 22 _-1 and 22 _-2 are substantially the same, and the height of the drive shaft 17 and the height of the rotary shaft 34 are set. The configuration is also substantially the same. This is because the drive disks 16 _{-1 to} 16 _-6 and the anti-phase disks 22 _-1 and 22 _-2 penetrate into the soil to substantially the same depth, so that the uneven plowing (the anti-phase disk 22 _-1 , This is to eliminate the partial deepening only where 22 _-2 passes.

On the other hand, as shown in FIG. 5, the diameters of the antiphase disks 22 ₋₁ ′ and 22 ₋₂ ′ may be larger than the diameters of the drive disks 16 _{−1 to} 16 ₋₆ . However, the heights of the drive shaft 17 and the rotary shaft 34 are determined by the height of the lowermost end of the antiphase disks 22 _-1 ′ and 22 _-2 ′ and the height of the lowermost end of the drive disks 16 _{-1 to} 16 _-6. The height is designed to be approximately the same. Specifically, the rotation shaft 34 is more than the drive shaft 17 by the length of the difference between the radii of the antiphase disks 22 _-1 ′, 22 _-2 ′ and the radii of the drive disks 16 _{-1 to} 16 _-6. Try to be high.

In this way, the drive disks 16 _{-1 to} 16 _-6 and the anti-phase disks 22 _-1 and 22 _-2 have the same penetration depth into the soil, and the drive disks 16 _{-1 to} 16 _-6 remain the same. antiphase disc 22 _-1 than ', _22-2' found the following, the greater the area of the portion that penetrates the soil, antiphase disk 22 _-1 ', _22-2' to increase the resistance by Can do. As a result, even with a smaller number of antiphase disks 22 _-1 ′, 22 _-2 ′ than the drive disks 16 _{-1 to} 16 _-6, a large resistance to the leftward force can be obtained, and the straightness of the tractor 200 can be increased. It can be improved further.

It should be noted that, when considering use in a field, since some uneven plowing depth can be tolerated, the reverse phase disks 22 _-1 and 22 _-2 should be deeply cultivated deeper than the drive disks 16 _{-1 to} 16 _-6. It may be. For example, the height of the drive shaft 17 and the height of the rotary shaft 34 are substantially the same while making the diameters of the antiphase disks 22 _-1 ′ and 22 _-2 ′ larger than the diameters of the drive disks 16 _{-1 to} 16 _-6. You may do it. In this case, the area of the portion penetrating into the soil of the antiphase disks 22 _-1 ′ and 22 _-2 ′ can be further increased.

(Second Embodiment)
Next, a second embodiment of the present invention will be described with reference to the drawings. 6 and 7 are diagrams showing a configuration example of the one-way tilling device 100 according to the second embodiment. FIG. 6 is a plan view and FIG. 7 is a side view. In FIGS. 6 and 7, the same reference numerals as those shown in FIGS. 1 to 3 are the same, and redundant description is omitted here.

In the second embodiment, in addition to the two antiphase disks 22 _-1 and 22 _-2 , a third antiphase disk 22 _-3 is further provided. The third antiphase disk _22-3 is provided inside the long left side frame 14b. Specifically, the connecting frame erected a support mechanism 21 _-3 toward the traveling direction rear side 12 is provided with the support mechanism 21 _-3 antiphase disk 22 _-3 through. It may also be through the support mechanism 21 _-3 erected on the connecting frame 12 without the left side frame 14b provided opposite phase disk 22 _-3.

As shown in FIG. 7, the diameters of the drive disks 16 _{-1 to} 16 _-6 are substantially the same as the diameters of the antiphase disks 22 _{-1 to} 22 _-3 . The drive shafts 17 of the drive disks 16 _{-1 to} 16 _-6 and the rotation shafts 34 of the antiphase disks 22 _{-1 to} 22 _-3 are substantially the same. As a result, the drive disks 16 _{-1 to} 16 _-6 and the antiphase disks 22 _{-1 to} 22 _-3 penetrate into the soil to substantially the same depth.

As described above, in the second embodiment, one drive disk _{16-6 at the} rearmost in the traveling direction is located on the front side in the traveling direction and on the inner side in the width direction of the connecting frame 12 as compared with the first embodiment. Many three antiphase disks 22 _{-1 to} 22 _-3 are provided. Thus, as compared with the first embodiment, obtained by penetration into the soil of opposite phase disk 22 _-1 to 22 _-3, it is possible to further increase the resistance to force in the left direction, the tractor 200 It is possible to further improve the straightness of the.

Also in the second embodiment, as shown in FIG. 8, driving is performed by making the diameters of the antiphase disks 22 _-1 ′ to 22 _-3 ′ larger than the diameters of the driving disks 16 _{−1 to} 16 _−6. disk 16 _-1 to 16 _-6 who also antiphase disk 22 _-1 'to 22 _-3' than is may be penetrated area of the soil increases. In this case, the height of the lowermost ends of the antiphase disks 22 _-1 ′ to 22 _-3 ′ may be substantially the same as the height of the lowermost ends of the drive disks 16 _{−1 to} 16 _−6. , It may be slightly lower.

(Third embodiment)
Next, a third embodiment of the present invention will be described with reference to the drawings. 9 to 11 are diagrams showing a configuration example of a one-way tillage device 100 according to the third embodiment. FIG. 9 is a plan view, FIG. 10 is a perspective view, and FIG. 11 is an enlarged perspective view. . 9 to 11, the same reference numerals as those shown in FIGS. 1 to 3 are the same, and redundant description is omitted here.

In the first embodiment, the antiphase disks 22 _-1 and 22 _-2 are supported by the rotating shaft 34 and passively rotate in response to resistance from the soil. That is, the antiphase disks 22 _-1 and 22 _-2 were non-driven. On the other hand, in the third embodiment, at least one of the antiphase disks 22 _-1 and 22 _-2 is constituted by a drive disk. FIGS. 9 to 11 show an example in which only the left-side anti-phase disk 22 _-2 ″ is configured by the drive disk, but the right-side anti-phase disk 22 _-1 may also be a drive type.

Here, a configuration example of the second transmission mechanism for transmitting power to the drive type anti-phase disc 22 _-2 ″ will be described with reference to FIG. 11. As shown in FIG. A transfer gear box 42 is provided at the end of the connecting frame 12 side of the PTO shaft 18a that connects to the transfer gear 12, and a second drive shaft 41 is attached to the transfer gear box 42. The power from 200 is transmitted to the second drive shaft 41.

The second drive shaft 41 is rotatably supported by a support plate 44 provided on the connection frame 12. A chain 43 is suspended from the tip of the second drive shaft 41, and this chain 43 is connected to the rotary shaft 34 of the drive type anti-phase disc _22-2 ". When the second drive shaft 41 rotates, the power is transmitted to the rotation shaft 34 via the chain 43, and the drive type anti-phase disk 22 _-2 "is driven to rotate. In addition, the structure of the power transmission mechanism shown here is an example, Comprising: It is not limited to this.

As described above, in the third embodiment, since the anti-phase disk 22 _-2 ″ can be driven, a propulsive force is generated by the rotation of the anti-phase disk 22 _-2 ″, and the driving disks 16 ₋₁ and 16 ₋ are driven. It is possible to more actively generate a resistance force in the direction (right direction) opposite to the lateral (left direction) force generated by the penetration of _{2 into} the soil. For this reason, the straight traveling property of the tractor 200 can be further improved.

Also in the third embodiment, the diameters of the anti-phase disk 22 _-1 and the drive type anti-phase disk 22 _-2 "may be larger than the diameters of the drive disks 16 _{-1 to} 16 _-6 . the height of the lowermost portion of the reverse phase disk 22 _-1 and driven antiphase disk 22 _-2 ", the height of the lowermost portion of the drive disk 16 _-1 to 16 _-6 and may be made substantially the same However, it may be slightly lower.

In the first to third embodiments, the drive disk 16 _-1 to 16 _-6 forward rotation has been described for (rotation in the same direction as the traveling direction of the tractor 200) is reversely rotated in the opposite direction You may do it. When rotated forward drive disk 16 _-1 to 16 _-6, as a reaction when the drive disk 16 _-1 to 16 _-6 bite into the soil, so that the drive disk 16 _-1 to 16 _-6 floats upward Receive high lift from the soil. On the other hand, the reverse rotation of the drive disks 16 _{-1 to} 16 _-6 causes a force that pushes the tilling device 100 downward, so that the reverse-phase disks 22 _-1 and 22 _-2 are more deeply cultivated. Deepen.

Further, by reversely rotating the drive disks 16 _{-1 to} 16 _-6 , a force is generated diagonally right rear by the drive of the disk itself, and the second force in the lateral direction which is a component of the force is , It will be a force in the right direction. Thus, the traveling direction of the drive disk 16 _-1 to 16 _-6 with the forward movement of the tractor 200, the drive disk 16 _-1 to 16 _-6 lateral caused by facing oblique (left) Propulsive force in the direction opposite to the first force (right direction) can be generated, and a part of the first force in the left direction can be offset by the second force in the right direction. It has the merit that.

Even when the drive disks 16 _{-1 to} 16 _-6 are rotated in the reverse direction, the drive type anti-phase disk 22 _-2 ″ is rotated in the forward direction.

Further, in the first to third embodiments, the antiphase disks 22 _-1 and 22 _-2 are provided in front of the connection frame 12 in the traveling direction and inside the left and right lower links 11a and 11b. However, the present invention is not limited to this. For example, as shown in FIG. 12, an antiphase disk _22-3 may be provided only inside the long left side frame 14b. Even in this case, since the anti-phase disk _22-3 is provided at a position closer to the center of gravity of the tilling device 100 than in the prior arts disclosed in Patent Documents 1 to 3, the downward force due to the weight of the tilling device 100 is sufficient. Therefore, insufficient penetration into the soil can be suppressed. However, it is preferable to provide the antiphase disks 22 _-1 and 22 _-2 at the positions shown in FIG. 1 or the like as positions where the downward load is most likely to be applied.

Moreover, although the example which provides a disk as an example of a ring was demonstrated in the said 1st-3rd embodiment, this invention is not limited to this. For example, as shown in FIG. 13, coulters 23 _-1 and 23 _-2 may be used. Since the coulters 23 _-1 and 23 _-2 are flat and have no curvature, a large force is applied to the tip when arranged at an angle, and therefore it is not preferable to arrange them at an angle. On the other hand, in the case of a disk, even if it is arranged obliquely, the load on the tip is small because the tip of the disk can enter the soil in a state substantially parallel to the traveling direction. Since the action of canceling out the force generated in the left direction via the drive disks 16 _{-1 to} 16 _-6 is increased by arranging them at an angle, it is more preferable to use a disk that can be arranged at an angle.

Moreover, although the said 1st-3rd embodiment demonstrated the example which provides one anti-phase disk _22-1 ( _22-2 ) with respect to one support mechanism _21-1 ( _21-2 ), this book The invention is not limited to this. For example, one anti-phase disk 22 _-1 (22 _-2 ) may be provided on each side of one support mechanism 21 _-1 (21 _-2 ). As an example of a specific configuration, the rotating shafts 34 are protruded on both sides of the bracket 32 provided on the support shaft 33 shown in FIG. 4, and the opposite phase disc 22 ₋₁ ( A configuration in which 22 ₋₂ ) is provided one by one is conceivable. Thus, the traveling direction traveling direction front side in than the end of the drive disk 16 _-6, and, in a limited space such as the inner side in the width direction of the connecting frame 12, placing more antiphase disk Can do.

  Moreover, in the said 1st-3rd embodiment, in order to utilize effectively the limited narrow space between the tractor 200 and the tilling device 100, it combined with the function of the ruler wheel which adjusts a tilling depth, and the antiphase You may make it provide the cylindrical part or cone part smaller diameter than a disc in the one side or both sides of a disc.

  In the first to third embodiments, at least one of the angle and the height of the antiphase disk may be adjustable.

  In addition, each of the first to third embodiments is merely an example of actualization in carrying out the present invention, and the technical scope of the present invention should not be construed in a limited manner. Is. That is, the present invention can be implemented in various forms without departing from the gist or the main features thereof.

10 PTO shaft 11a, 11b, 11c 3-point link (link member)
12 connecting frame 13 hitch 14a, 14b side frame 15 cultivator frame 16 _-1 to 16 _-6 drive disk 17 drive shaft 18a, 18b drive the shaft 19 a gear box 20 the chain 21 _-1, 21 _-2, 21 _-3 support mechanism 22 _{- 1} , 22 _-2 , 22 _-3 Reverse Phase Disc _22-2 "Drive Type Reverse Phase Disc 23 _-1 , 23 _-2 Coulter 31 Support Plate 32 Bracket 33 Support Shaft 34 Rotating Shaft 35 Suspension 41 Second Drive Shaft 42 Transfer Gearbox 43 chain
100 Tiller 200 Tractor

Claims (13)

A one-way tilling device that is connected to the rear of an agricultural vehicle and is provided with a plurality of drive disks on a drive shaft that is disposed obliquely with respect to the traveling direction of the agricultural vehicle,
Of the plurality of drive disks, the drive disk is connected to a link member for connecting the agricultural vehicle and the tilling device in front of the drive disk at the rearmost direction in the direction of travel, with respect to the travel direction of the farm vehicle. A one-way tilling device, characterized in that an annular ring having a phase opposite to that of the plurality of disks is provided at a position on the inner side in the width direction of a vertically arranged connecting frame.   The one-way tilling device according to claim 1, wherein the circular ring is provided at a position in front of the connection frame in a traveling direction and inside the link member.   The circular ring has two sides provided on the front side in the moving direction with respect to the last drive disk in the moving direction and on the rear side in the moving direction with respect to the connecting frame, and from both ends of the connecting frame toward the rear side in the moving direction. The one-way tilling device according to claim 2, further provided at a position inside the long side frame of the frame.   The circular ring has two sides provided on the front side in the moving direction with respect to the last drive disk in the moving direction and on the rear side in the moving direction with respect to the connecting frame, and from both ends of the connecting frame toward the rear side in the moving direction. The one-way tilling device according to claim 1, wherein the one-way tilling device is provided at a position inside a long side frame of the frame. The ring is a disc curved with a predetermined curvature,
When the angle at which the plurality of drive disks incline with respect to the traveling direction of the agricultural vehicle is a positive angle, the disks are arranged in the opposite phase so as to face a negative angle. The one-way type tilling device according to any one of claims 1 to 4.   In addition to the transmission mechanism for transmitting the driving force to the plurality of driving disks, a second transmission mechanism for transmitting the driving force to the opposite phase disk is provided, and the opposite phase disk is driven to rotate. The one-way tillage device according to claim 5, wherein   The one-way tilling device according to any one of claims 1 to 4, wherein the plurality of drive disks are reversely rotated in opposite directions.   5. The ring according to claim 1, wherein a plurality of the circular rings are provided at a position on the front side in the traveling direction with respect to the last drive disk in the traveling direction and on the inner side in the width direction of the connecting frame. One-way tillage device as described in 1.   The one-way tilling device according to any one of claims 1 to 4, wherein the circular ring is designed to have a diameter larger than that of the plurality of drive disks.   The rotating shaft of the ring and the drive shaft of the drive disk are designed to have a height such that the bottom end of the ring and the bottom end of the drive disk are substantially aligned. The one-way type tilling device according to claim 9.   The rotating shaft is protruded on both sides of the bracket provided on the support shaft, and the one ring is provided for each of the protruding rotating shafts on both sides. One-way tillage device as described in 1.   The one-way according to any one of claims 1 to 4, wherein a cylindrical or frusto-conical ruler ring having a diameter smaller than that of the circular ring is provided on one or both sides of the circular ring. Type tillage device.   The one-way tilling device according to any one of claims 1 to 4, wherein the ring is a coulter.