JPH038161B2 - - Google Patents

Description

[Detailed description of the invention] <Industrial application field> The present invention relates to a tillage device.

<Prior art> As a tilling device mounted on a tractor, a pair of left and right disc plows each having a disc on a disc shaft are mounted on both left and right sides of a tilling part comprising a tilling claw on a tilling shaft, and a pair of left and right disc plows each having a disc on a disc shaft are mounted on a flat surface where the front becomes narrower. There is one that is arranged in a V-shape when seen and is equipped with a drive mechanism that rotationally drives the tilling section and the plow.

By the way, in the past, the plow was arranged at a large distance rearward from the tilling section, and the length of the entire tilling device in the front-rear direction was long.

<Problems to be Solved by the Invention> Therefore, there was a problem that the weight balance between the tractor and the tilling device was poor, making it impossible to perform the tilling work satisfactorily.

Furthermore, as described above, in the past, the plow was spaced far back from the tilling section, making the drive mechanism for the tilling section and the plow complicated.

<Means for Solving the Problems> The present invention has a short overall length in the longitudinal direction, has a good weight balance with the tractor, can perform plowing work well, and can simplify the drive mechanism of the tiller and plow. The purpose is to provide tillage equipment.

In order to achieve this object, the first aspect of the present invention is characterized by moving each disc shaft rearward and diagonally outward from the left and right ends of the tilling shaft through an interlocking mechanism that interlocks the tilling shaft and the disc shaft. The driving mechanism is a mechanism for rotationally driving the tilling section in the up-cut direction.

Further, the second invention is characterized in that, in addition to the main components of the first invention, the interlocking mechanism is a mechanism that allows the plow to rotate around the interlocking mechanism in plan view.

Furthermore, the feature of the third invention is that, in addition to the structure of the second invention, the tilling shaft and the disc shaft are interlocked by an interlocking mechanism so that the tilling shaft rotates at a higher speed than the disc shaft. At the point.

<Function> According to the present invention, the tilling and crushing work is performed as opening work by the tilling section in the lateral center of the tilling device, and the plows on both the left and right sides of the tilling section turn the soil into debris to the rear diagonally inward side. It is thrown upside down.

Further, according to the third invention, the tilling section is rotationally driven at a higher speed than the plow.

<Embodiment> Hereinafter, a first embodiment of the present invention will be explained based on the drawings of FIGS. 1 to 6. In FIGS. 1 to 3, 1 is a tractor, a rear wheel 2, a PTO shaft 3, It is equipped with a hydraulic system 4 for lifting and lowering work equipment, etc., and is connected to the rear of the tractor 1 via a three-point linkage mechanism 7 consisting of a central top link 5 and a pair of left and right lower links 6.
A tilling device 8 is installed so that it can be moved up and down and is detachably attached.

The tilling device 8 includes a machine frame 11, a tilling section 12, a pair of left and right disk plows 13, a drive mechanism 15 that includes a pair of left and right interlocking mechanisms 14 and the like to rotationally drive the tilling section 12 and the plow 13, and an adjustment mechanism. It is composed of 16 mag.

The machine frame 11 includes an input case 18 located at the lateral center of the tilling device 8, a top mast 19 projecting forward and upward from the input case 18, and a top mast 19 projecting outward from both left and right sides of the input case 18. A pair of left and right cylindrical central arms 20, a lower link mounting bracket 21 protruding forward from the outer end side of each central arm 20, and each central arm 20.
A pair of left and right side arms 23 extend diagonally rearward from the outer end of the left side arm 23, a transmission case 24 is provided below from the outer end of the left arm 23, and a transmission case 24 is provided below from the outer end of the right arm 23. a pair of left and right interlocking cases 26 which are located below the connecting portion between each central arm 20 and each side arm 23 and which contain an interlocking mechanism 14; A pair of left and right L-shaped support arms 2 are connected to the case 26 from the front obliquely outer side.
It is equipped with 7th class.

Each bracket 21 is detachably attached to each lower link 6 via a mounting pin 28, and the top mast 19 is detachably attached to the top link 5.

As shown in FIG. 4, at the opposing ends of each center arm 20 and each side arm 23, connecting plates 59 and 60 for a pair of upper and lower sides are provided protruding from the other side. , 60 are pivotally connected by a pair of upper and lower support shafts 61 in the vertical direction, so that each side arm 23 can rotate around the support shafts 61.

To explain the drive mechanism 15, the input case 18 is equipped with an input shaft 31 that protrudes forward, and the input shaft 31 is connected to the PTO shaft 3 via a transmission shaft 33 having a universal joint 32 at both ends. They are removably connected. A first transmission shaft 34 extends into the left center arm 20 from the input case 18, and the first transmission shaft 34 and the input shaft 31 are interlocked and connected via a pair of bevel gears 35, 36.
The second power transmission shaft 37 in the left side arm 23 is interlocked with the first electric shaft 34 via a universal joint 38, and the bending position of the universal joint 38 is located at the support shaft 61 in a plan view.
It is arranged so that rotation of the side arm 23 around the support shaft 61 is not hindered. In addition, the second transmission shaft 37 is connected via a universal joint 39,
It is interlocked and connected to a third transmission shaft 40 that protrudes into the transmission case 24 . Reference numeral 41 designates a chain transmission mechanism disposed within the transmission case 24, which consists of a pair of upper and lower sprockets 42, 43 and a chain 44 wound around both sprockets 42, 43. The upper sprocket 42 is connected to the third transmission shaft 40. It is permanently installed.

The tilling section 12 is disposed laterally between the two interlocking cases 26, is parallel to both central arms 20 below, and has a tilling shaft 47 rotatably supported by both the interlocking cases 26. , a bracket 48 fixed to the tilling shaft 47 symmetrically with respect to the lateral center position, and a tilling claw 49 detachably attached to the bracket 48. The tilling section 12 is rotationally driven in the up-cut direction indicated by the arrow a, and the tilling claws 49 arranged symmetrically on each side of the tilling section 12 are arranged facing outward. Further, one of the pair of tilling claws 49 arranged symmetrically in the radial direction at the lateral center of the tilling section 12 is oriented toward the right side, and the other is oriented toward the left side.

Each disc plow 13 has an interlocking case 26 on each side, a lower end portion of a transmission case 24, or a side plate 25.
It is arranged horizontally between the lower ends and is parallel to the left and right side arms 23 below,
A disc shaft 52 rotatably supported by the interlocking case 26 and the transmission case 24 or the side plate 25, and a pair of bowl-shaped discs 53 arranged in parallel on the disc shaft 52, one on the outside and the other, and curved diagonally outward to the rear. Become. The disc shaft 52 extends rearward and diagonally outward from the left and right side ends of the tilling shaft 47 via an interlocking mechanism 14 that interlocks the disc shaft 52 and the tilling shaft 47. It is fixed to the lower sprocket 43 of the transmission mechanism 41.
As shown also in FIG.
7, a disk shaft-side Pepel gear 57 fixed to the inner end of the disk shaft 52, and both Pepel gears 5 mentioned above.
6 and 57, and an intermediate shaft 70 which is rotatably installed vertically and has the intermediate pepper gear 69 fixed to its lower end, and the axis of the intermediate shaft 70 is Support shaft 6 in plan view
1, and the plow 13 is aligned with the axis of the intermediate shaft 7.
0 axis, that is, around the support shaft 61. Further, the interlocking case 26 includes an inner case 72 that rotatably supports the tilling shaft 47 and the intermediate shaft 70.
and an outer case 73 that rotatably supports the disk shaft 52, and both cases 72 and 73 have spherical parts 72a and 73a centered on the intersection of the axes of the tilling shaft 47 and the intermediate shaft 70. , both spherical parts 72
a and 73a are slidably in contact with each other, and the rotation of both cases 72 and 73 can correspond to the rotation of the plow 13. 74 is a sealing material. Plow 1
3 is rotated at the same speed as the tiller 47, but its rotation direction is opposite to the direction indicated by the arrow a, which is opposite to that of the tiller 12. The plowing depths of the tilling section 12 and the plow 13 are the same, and the rear end of the tip rotation locus of the tilling claw 49 located at the outermost left and right sides of the tilling section 12 is located at the inner disk of each of the left and right plows 13. It enters into the rear end of 53, and the tilling part 12
The uncultivated area between the plow and each plow 13 is minimized.

The adjustment mechanism 16 includes a screw shaft 77 with a handle 76 that rotatably projects rearward from the input case 18.
and a piece body 78 which is screwed onto the screw shaft 77 and installed vertically.
It is equipped with a pair of left and right interlocking links 80 whose one end is pivotally connected to the side arm 23 by a pivot shaft 79 and whose other end is pivoted to the piece body 78. Due to the rotation, the piece body 78 screws forward and backward, and each side arm 23 and the plow 13 rotate around the support shaft 61 via the interlocking link 80, thereby changing the angle formed between the disk shaft 52 and the tilling shaft 47. That is, the gearing angle θ of the plow 13 is adjustable.
The gearing angle θ is usually about 27 degrees.

According to the embodiment configured as described above, when performing tillage work using the tillage device 8, power is transmitted from the PTO shaft 3 to the input shaft 31 via the transmission shaft 33, and the tillage device 8 is operated by the tractor 1. The vehicle is towed by the vehicle.

Then, the tilling section 12 is rotationally driven in the upcut direction indicated by the arrow a through the drive mechanism 15, and the plow 13 is rotated in the direction of the upcut indicated by the arrow a.
Rotationally driven in the direction of the arrow.

As a result, the tilling section 12 in the center of the tilling device 8
As a result, the tilling and crushing work is performed as opening work, and at the same time, the discs 53 of the plows 13 on both the left and right sides of the tilling section 12 cut into the soil as they rotate.
The soil is cut up, guided according to the curve of the inside surface, turned over, and thrown diagonally inward to the rear as dirt, ensuring that straw, weeds, etc. in the field are removed by turning over the gravel. They embed themselves in the soil and accelerate their corrosion.

The tilling work traces are as shown in FIG.
The gravel 66 that has been cut up and turned over by the disks 53 of the left and right plows 13 is sequentially overlapping, and there are traces of the passage of the outer disks 53 of the plows 13 on the left and right sides of the left and right gravel 66. A groove 67 will remain corresponding to this.

By the way, in the above case, the tilling claws 49 are arranged symmetrically about the lateral center position in the tilling section 12, and the tilling claws 49 arranged on each left and right side of the tilling section 12 are directed toward the left and right sides, respectively. Therefore, the tilling claws 49 on the left and right sides of the tilling section 12 can blow the tilled soil symmetrically forward and diagonally outward, so that the tilling section 12 has a good opening effect, and the disc 53 of the plow 13 can spread the soil. In addition to being able to perform the reversing and throwing work well, the tilling section 1
The plowing marks 65 of the plowing part 12 do not bulge up or fall more than the rubble soil 66 of No. 2, and the plowing marks 65 of the plowing part 12 become good.

In addition, since the tilling section 12 is rotationally driven in the upcut direction, even if there is straw on the ground of the field, the tilling claws 49 will not come into contact with the straw through the tilled soil mass when coming out of the soil. Since straw and the like are blown away together with the tilled soil clods, straw and the like are less likely to get entangled with the tilling claws 49.

FIG. 7 shows a second embodiment of the present invention, in which the interlocking mechanism 14 includes a bevel gear 56 on the tilling shaft side, a bevel gear 57 on the disc shaft side having a smaller diameter than this, and a bevel gear 57 on the disc shaft side having a smaller diameter than the bevel gear 56 on the tilling shaft side. a lower intermediate bevel gear 82 that engages with the gear 56 from below; and an upper intermediate bevel gear 8 that has approximately the same diameter as the disk shaft side bevel gear 57 and engages with the gear 57 from above.
3 and an intermediate shaft 70, both intermediate bevel gears 83, 82 are fixed to the upper and lower ends of the intermediate shaft 70, and the upper and lower ends of the intermediate shaft 70 are connected to the inner case 72.
It is rotatably supported. Also, outer case 7
3 is fitted into the vertically intermediate portion of the inner case 72 and rotatably supports the intermediate shaft 70;
The plow 13 is rotatable about the axis of the intermediate shaft 70.

The interlocking mechanism 14 allows the rotation of the tilling shaft 47 to be faster than the rotation of the disk shaft 52, for example, the rotation speed of the tilling shaft 47 is 170 to 420 rpm.
The tilling section 12 and the plow 13 are rotated at suitable rotational speeds, respectively, so that the tilling section 12 and the plow 13 can perform the work better.

In the embodiment, a bevel gear transmission mechanism or the like is used as the interlocking mechanism, but other transmission mechanisms such as a universal joint as shown in FIG. 4 may also be used.

Further, in the second invention and the third invention, the tilling section may be rotationally driven in the downcut direction.

<Effects of the Invention> As described in detail above, according to the present invention, each disc shaft is moved backward and diagonally outward from the right and left ends of the tilling shaft via an interlocking mechanism that interlocks the tilling shaft and the disc shaft. Since it extends to the side, the length of the entire tilling device in the front and back direction can be made shorter than before, and therefore, the weight balance between the tractor and the tilling device can be made good, allowing the tilling device to perform plowing work well. At the same time, the drive mechanism for the tilling section and the plow can also be simplified.

In particular, according to the first invention, since the drive mechanism is a mechanism that rotates the tilling part in the up-cutting direction, even if there is straw or the like on the ground of the field, the tilling claws can Since it hits straw etc. through the tilled soil clod and blows the straw etc. off with the tilled soil clod, it is difficult for straw etc. to get entangled in the tilling claws.

Further, according to the second invention, since the interlocking mechanism is a mechanism that allows the plow to rotate around the interlocking mechanism in plan view, each disc shaft can be connected from each side end of the tilling shaft via the interlocking mechanism. Even though the plow extends, the plow's gearing angle can be adjusted by simply adding a gearing angle adjustment device of the plow as in the embodiment.

Furthermore, according to the third invention, in addition to the configuration of the second invention, the tilling shaft and the disc shaft are interlocked by the interlocking mechanism so that the tilling shaft rotates at a higher speed than the disc shaft. Even though the disk shaft extends from each side end of the tilling shaft, the tilling section and the plow can be rotated at appropriate rotational speeds.

The present invention has the various advantages mentioned above and is of great practical benefit.

[Brief explanation of the drawing]

1 to 6 show a first embodiment of the present invention, in which FIG. 1 is an overall plan view, FIG. 2 is a side view, FIG. 3 is a diagram of the unfolded mechanism, and FIGS. 4 and 5. Each figure is a rear sectional view of each part indicated by arrows A and B in FIG. 3, FIG. 6 is an explanatory view of the operation, and FIG. be. 1... Tractor, 7... Three-point linkage mechanism, 8...
... Cultivating device, 11... Machine frame, 12... Cultivating section, 1
3...Disc plow, 14...Interlocking mechanism, 15
... Drive mechanism, 16 ... Adjustment mechanism, 47 ... Tilling shaft, 49 ... Tilling claw, 52 ... Disc shaft, 53
...disk.

Claims (1)

[Scope of Claims] 1. A tilling device attached to a tractor, which has a tilling shaft equipped with tilling claws, and on both left and right sides of a tilling part,
In a tilling device, a pair of left and right disc plows each having a disc on a disc shaft are arranged in a V-shape in a plan view, narrowing at the front, and are equipped with a drive mechanism that rotationally drives the tilling section and the plow. From each side end, each disc shaft extends rearward and diagonally outward through an interlocking mechanism that interlocks the tilling shaft and the disc shaft, and the drive mechanism is a mechanism that rotates the tilling part in the up-cut direction. A tillage device characterized by: 2. A tilling device attached to a tractor, which has a tilling shaft equipped with tilling claws, on both the left and right sides of the tilling part,
In a tilling device, a pair of left and right disc plows each having a disc on a disc shaft are arranged in a V-shape in a plan view, narrowing at the front, and are equipped with a drive mechanism that rotationally drives the tilling section and the plow. From each side end, each disc shaft extends rearward and diagonally outward through an interlocking mechanism that interlocks the tilling shaft and the disc shaft, and the interlocking mechanism allows the plow to rotate around the interlocking mechanism in a plan view. A tillage device characterized in that it has a mechanism that enables it. 3. A tilling device attached to a tractor, which has a tilling shaft equipped with tilling claws, on both the left and right sides of the tilling part,
In a tilling device, a pair of left and right disc plows each having a disc on a disc shaft are arranged in a V-shape in a plan view, narrowing at the front, and are equipped with a drive mechanism that rotationally drives the tilling section and the plow. From each side end, each disc shaft extends backward and diagonally outward through an interlocking mechanism that interlocks the tilling shaft and the disc shaft so that the tilling shaft rotates at a higher speed than the disc shaft. A tillage device characterized in that the plow is rotatable around the interlocking mechanism in plan view.