JPS60248101A - Disc type rotary plowing apparatus - Google Patents

Abstract

(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

[Detailed description of the invention] [Industrial application field]

The present invention is a disc-type low tillage device which is connected to the rear of a tractor via a three-point support link mechanism so that it can be unloaded, for example, and performs a tilling action, and in particular uses the motion and force transmitted from the PTO shaft of the tractor. The present invention relates to a disc-type rotary tiller that rotates and drives a disc.

[Conventional technology]

Conventionally, a disc-type rotary tiller of the type that forcibly drives a disc plow as described above has been known for a long time as described in British Patent No. 857.923, and recently, it has also been used in Japan. Utsukai Showa 57-5420
The method described in Publication No. 1 has been proposed. This type of tillage device has disc rotors that extend in the left and right directions and are configured symmetrically with a central transmission case as a boundary, and the gang angle of the left and right disc rotors can be adjusted back and forth within a horizontal plane with respect to the direction of travel. In addition to being able to pivot, the left and right disc rotors are forcibly driven to rotate by power transmission from the tractor PTO shaft via a universal joint and transmission shaft. By arranging the curved concave surfaces facing inward or outward from each other, the soil is tilled and turned into a high ridge shape or a broken ridge shape.

[Technical problem of the invention]

By the way, in the above-mentioned 111 rotation device, when the disc plows of the left and right disc rotors are installed so that the curved concave surfaces face inward to each other (in order to plow so that the soil is turned over into a high ridge shape), the inner ends of the left and right disc rotors are Since it is necessary to leave the required distance between the discs on the sides, the middle part between the left and right discs on the inner end side must be swaged and dug up in the middle. There is a problem in that the soil clod that is plowed and turned over with a disk overlaps the uncultivated soil in the center, causing the central area to become locally high and leaving uncultivated land (remaining tillage) in the central area. Conventionally, in a center drive type disc rotary tiller, a transmission case that receives power from a central mission case protrudes in front of the inner ends of the left and right disc rotors. It is known to have a protruding medium-heated shaft that rotates perpendicularly to the direction of travel and in the direction of the up cutter 1, and to which a hatchet claw with the horizontal blade portion bent outward is attached. In this method, the soil cultivated with the machete claws and the straw culms scattered on the l111m surface are scattered in the direction of movement of the aircraft, that is, in the direction of 1-rakta, so that the middle opening of the medium fire part is fully opened. Not only do they have obvious drawbacks, but straw culms and the like get wrapped around the central tilling shaft, uncultivated land (remaining tillage) remains below the transmission case, and the overall length of the machine becomes longer, making the heavy chain heavier. Therefore, the applicant first placed a pair of driven or self-rotating left and right central disks in front of the inwardly inclined sides of the left and right disk rotors, with their curved concave surfaces facing outward and in the direction of travel. In contrast, we proposed a system in which the front parts of the circumference are pivoted in a V-shape so that they are close to each other, but in this method, the earth clod divided in the middle by a medium-fired disc is only flipped left and right, and the middle part is The soil clods that have been removed are brought back to the center by the inner disc of the disc rotor, causing them to overlap, so the problem of locally rising soil in the center remains unresolved, and the remaining tillage remains below the middle of the central disc. However, in order to dispose of this residual plowing, a chisel or the like must be installed, resulting in problems such as increased traction resistance.

[Purpose of the invention]

In order to solve the above-mentioned problems, the present invention improves the central tillage processing device disposed in front of the center of the left and right disc rotors. Large soil clods can be tilled diagonally to the left and right in front of each other, and an opening can be reliably formed in the center of the cultivated soil, and the soil that has been tilled in the middle can be evenly divided in front of the left and right disc rotors. It is possible to turn over and plow evenly without causing localized areas of plowing due to the dispersion of land.
Moreover, it is an object of the present invention to provide an improved disc-type rotary tiller that does not require a chisel or the like for processing residual tillage, reduces traction resistance, and allows the entire length of the entire apparatus to be shortened.

[Technical means of the invention]

In order to achieve this object, the present invention has a mission case in the center of the device, and uses this mission case as a base for left and right sets, which are constructed by attaching a plurality of disks to a rotating shaft at a predetermined pitch on both sides of the left and right sides. The disc rotor is disposed with a predetermined gearing angle, and the left and right disc rotors are rotationally driven from the mission case via a power transmission system, wherein each of the left and right disc rotors is On the front side of the end, there is a medium-fire tilling shaft of the left and right groups that rotates in the up-cut direction through a transmission case that receives power from the respective disk rotation shafts, and a center tiller shaft of the group that is parallel to the disk rotation axis. The shafts are arranged so as to form a V-shape in plan view with respect to the center line in the center direction of the left and right disc rotors, and a plurality of central tilling blades are attached to the left and right medium-heat tilling shafts, respectively. This method is characterized by overlapping trajectories and intersecting rotations to prevent leftover plowing.

【Example】

Hereinafter, one embodiment of the present invention will be described with reference to the drawings. The figure shows a type of disc-shaped rotary tilling device that is attached to the rear of a tractor. has an input shaft 11 protruding from the front, which is connected to the tractor A via a drive shaft 12 as seen in well-known tractor-mounted agricultural machines.
The PTO shaft is attached to the rear of the tractor and is connected to the PTO shaft for three rotations to receive power from the tractor. In addition, the transmission case 1 has a strut 21 erected at its front end, and is composed of a top link 22 connected to the top of the strut 21, and two left and right lower links 23 connected to both sides of the lower part. Three-point support link mechanism 2
The transmission case 1 is connected to the rear part of the tractor A via the transmission case 1 so as to be movable up and down. Disc rotors 3 are arranged on both left and right sides of the mission case 1 at the center. These left and right disks [l-tor 3 are horizontally supported rotors @31, respectively.
, a plurality of disc plows 32 (two disc plows in the embodiment shown in the drawings) are installed at a predetermined pitch. The left and right disc rotors 3 are mounted symmetrically (pushed together), each having a gate shape, and a rotor frame 33 that also serves as a transmission frame.
The rotor shaft 31 is pivotally supported between the left and right vertical portions of the rotor frame 33 so as to be independently framed by the rotor frame 33. In the left and right I-ta frames 33, a bracket 34 provided at the upper part of each inner end side is connected to a bracket 35 fixed to the transmission case 1 by a vertical pin 36.
[W], and the left and right rotor frames 33 can be rotated back and forth in a horizontal plane using the vertical bin 36 as a fulcrum, thereby making it possible to adjust the gearing angle of the left and right disc rotors 3, 3. The Guyang angle adjustment mechanism 4 for adjusting the Guyang angle is as follows:
A screw rod 43 having a rotation handle 42 on the tractor Δ side is rotatably supported at the upper end of a pair of left and right support frames 41 erected upward from the front end of the strut 21,
This threaded rod 43 (threaded screw 44) is extended rearward, and the rear end of the threaded cylinder 44 is rotated in the front-back direction by the pivot @ 45 to the rear end pivot position of the strut 21. The rotor frame 3 is pivotally connected to the upper end of the swinging rod 46 which is pivotably supported, and the rotor frame 3 below the vertical bin 36 is mounted on both sides of the upper end of the swinging rod 4G.
A swinging arm 47 that projects rearward from 3. , 47 are pivotally connected via link bodies 48, 48. The screw rod 43 is rotated by the rotation of the rotation handle 42, and the screw cylinder 44 moves forward or backward, so that the swing rod 46 swings back and forth around the pivot shaft 45. By moving the swinging arm 47 back and forth via the link body 48, the gearing angle of the disc rotors 3, 3 is adjusted. The mission case 1 has an I: large output shaft 14.14 that protrudes in the left and right direction, and a power transmission shaft 16 connected to both output shafts 111.14 via a universal joint 15 is connected to the output shaft 14. - Extends laterally within the tough seam 33, and the other end is transmission connected to a Zide transmission system in a transmission case 37 formed on the outer end side of the Tough Seam 33; Both disc rotors 3,
Rotational power is transmitted to the [1-9 shaft 31 of No. 3]. 4, the power transmission shaft 16 has an extendable shaft portion, and the disc rotor 3 is designed to rotate at a high speed (approximately 3.5 times or more faster) than the traveling speed of the tractor. be. Further, one end of a numbered rod 38, , '>8 is pivotally attached to both left and right sides of the rear end of the mission case 1,
The other end of the support arm 39 extends substantially parallel to the rotor frame 33 and is pivotally connected to extend rearward from the rear of the transmission case 37. ' 39, and the link rod 38, the pivot point between the transmission case 37 of the support arm 39, and the vertical pin 3θ form a parallel link. Support l1li! At the rear end of the 3L 39, a branch 51 with a gauge wheel 5 pivotally supported is installed so that its position can be adjusted up and down, and by adjusting the gauge wheel 5 up and down, the tillage depth by the disc rotor 3 can be regulated. It is. The gauge wheel 5 is designed to rotate around an axis perpendicular to the direction of travel, almost unaffected by the gearing angle adjustment of the left and right disc rotors 3, 3. Furthermore, a safety cover 6 is provided above the outer part of the rotor frame 33.

[This safety cover covers the upper part of the disc plow 32 and is equipped with a fitting 61. Although not shown, the safety cover covers the upper part of the disc plow 32.
A scraper, a soil reversing plate, etc. are removably installed. That's how it is. The left and right disks configured as described above [1-ta 3.3
A central tillage processor $7 according to the present invention is provided at the center front side of the inner end side. This central tillage processing mechanism 1 has left and right rotor shafts 31, 3.
1, a transmission case 71 supported by the rotor frame 33 is protruded forward and slightly downward from the inner shaft end of each of the left and right transmission cases 71. A pair of central tilling shafts 72 are respectively parallel to the rotor shaft 31 and are supported so as to protrude from the center line in the width direction of the left and right disc rotors 3, 3 so as to form a shape in a plan view. A propeller-shaped central tiller blade 73 is attached to each of the left and right central tilling shafts 72, 72. In this embodiment, the rotor shaft 31 rotates at 110 rpm, whereas the central tilling shaft 72 is enhanced so that it rotates at a faster speed of <1 (35 rpm (approximately 1.5 times)). The tilling blade 13 has a semicircular tilling blade (blade body) 731 on its boss portion 73a, which is wider at the tip end than at the base end, with the inner end facing forward and the outer end facing backward with respect to the rotation direction. Boss part 7 so that
3a (axis line of central tilling shaft 72) before intersecting diagonally -
Let it be fixed. Further, the central tilling blades 73.73 attached to the left and right central tilling shafts 72.72 are attached to the respective medium-heat tilling shafts 72.72, as shown in FIGS. 3 to 5. ．． 72, the two tilling blades 73b are shifted in phase by 180 degrees in the rotation direction,
And regarding the relationship between the left and right central tilling blades 73.73,
The tilling blades 73b are attached to the respective central tilling shafts 72, 72 so that their tip rotation trajectories overlap each other and cross-rotate so as not to cause residual M1. In the tilling blade 731), as shown in FIG. 5, the circular locus drawn by the point R1 forming the radius of rotation on the inner end side approaches the circular locus drawn by the point Rwax forming the maximum rotation radius of the blade,
The blades are mounted so that the circular trajectories drawn by the points R1 of the blades completely overlap, or overlap in a state close to that, so that they rotate crosswise. The tilling device (・) configured as described above is a system in which when the tractor A is moved forward to perform tilling work, the PTO shaft 13 of the tractor is
The left and right disc rotors 3, 3 are driven to rotate at a higher speed than the moving speed of the tractor by the power transmitted through the drive shaft 12 from The tillage is inwardly plowed and reversed into a high ridge shape (kamabot shape). Prior to this reversal of plowing by the left and right disc rotors 3, 3, the central tillage processing mechanism is activated as shown in Fig. 4. The medium heat tilling blade 73 of No. 7 is directed in the upward direction,
The disk [1-3 rotates at a higher speed than the axis 31,
Since the uncultivated land is cut in front of the intermediate part of both disc rotors 3, 3, the soil in the central part is plowed by slicing it diagonally forward to the left and right with relatively large clods. An intermediate opening is formed. At this time, the pair of central tilling blades 73 and 73 rotate in an intersecting manner so that the rotation loci of the tip portions of the left and right tilling blades 73b vary A-variably, and furthermore, from the base end to the tip side, the center tilling blades 73, 73 have a wide semicircular shape. Since the central tilling blades 73 and 73 are formed and installed obliquely with respect to the boss portion 73a so that the inner end faces forward in the direction of rotation, and are curved like a propeller, each central tilling blade 73. The cut is made into the cultivated soil, and the soil is plowed alternately to the left and right diagonally forward, so that no residual tillage remains in the center of the cultivated soil, and the center of the cultivated soil is reliably cultivated in a split shape. An opening can be formed in the central part, and the subsequent plowing and inversion of the soil mass by the inner disc plow 32 is backfilled towards this central opening, so that the central part can be evenly distributed without causing any local unevenness. It is cultivated flatly. Depending on the condition of the soil to be cultivated, the disc rotor 3, 3
The gearing angle is adjusted, but at this time, the driver driving the tractor A with the disc rotors 3 and 3 in the working state turns the gearing angle adjuster II/14 while driving the tractor. The gearing angle can be changed by rotating the movable handle 42, or the tilling device can be raised via the three-point link support mechanism 2 and the rotary handle 42
The gearing angle can be easily adjusted by rotating the gear. The gearing angle is normally adjusted at about 22 to 32 degrees.
It is not carried out over a very large range, and the adjustment of the Guyang angle has almost no effect on the central tillage process m4IIS7. [Effects of the Invention] According to the present invention, no uncultivated land (remaining tillage) remains between the left and right disc rotors, and the entire cultivated soil can be tilled by the disc 11. In this case, the central tillage processing mechanism is f A pair of left and right medium-fire tilling shafts, which rotate in the up-cut direction via a transmission case that receives power from the disc rotation shaft, are installed on the front side of each inner end of the disc rotation shaft, parallel to the disc rotation shaft, and connected to the left and right discs. [A plurality of central tilling blades are arranged so as to form a shape in a plan view with respect to the center line in the 11 directions of the computer, and a plurality of central tilling blades are arranged on the left and right central tilling axes so that the tip rotation locus of each tilling blade is A-variable. Since the structure is such that the parts are mounted so as to rotate crosswise, the following effects can be obtained. ■The left and right central tilling blades rotate in an intersecting manner with their tip rotation trajectories overlapping each other, and the left and right tilling blades alternately divide the soil in the center of the cultivated soil diagonally forward to the left and right. Since the soil is plowed in a continuous manner, the soil in the central part is reliably dug to the left and right, and a predetermined middle opening can be reliably formed in the central part of the tilled soil without leaving any residual plowing. ■ Also, the soil clods that are tilled in the middle are relatively large and are plowed in such a way that they are divided alternately to the left and right diagonally forward, so the aggregate structure in the tillage remains is maintained, and the disk 1
There is no risk of light pollution due to the effect of one field. ■Furthermore, as mentioned above, since the medium heat tilling blades cross-rotate and no residual tillage remains, there is no need to install a chisel or the like for residual tillage treatment between the left and right medium heat tillage processing mechanisms. By omitting this, the configuration can be simplified and the traction resistance can be reduced. ■ Also, since the tip rotation trajectories of the left and right central tilling blades overlap and cross-rotate to prevent residual tillage, the central tilling blade Fl! tllfl does not protrude greatly in front of the left and right disc rotors, and the overall length of the fuselage can be shortened, providing excellent effects.

[Brief explanation of drawings]

The accompanying drawings show an embodiment of the disc-type rotary tiller according to the present invention, in which Fig. 1 is a slope view seen from the rear, Fig. 2 is a plan view of the same, Fig. 3 is a perspective view of the main part, Fig. 4, and FIG. 5 is an explanatory diagram of the operation. DESCRIPTION OF SYMBOLS 1...Mission case, 11...Input shaft, 12...Drive shifter, 13
... PTO shaft, 14 ... Output shaft, 15 ... Koniper Suga Narji'' India, 16 ... Power transmission shaft, 2 ... Three-point support link m 4M, 21 ... Strut, 22. ...Top link, 23
...Lower link, 3...Disc rotor, 31...Rotor shaft, 32...Disc plow, 33
...Rotor frame, 34.35...Bracket,
36...Vertical bin, 37...Transmission, 38...
・Link rod, 39...Support arm, 4...Guyang angle adjuster lever, 41...Support frame, 42...Rotating handle, 43...
・Threaded rod, 44... Threaded cylinder, 45... Pivot shaft, 46
... Swinging rod, 47... Swinging arm, 48... Link body, 5... Gauge wheel, '51... Strut, 6... Safety cover, 61... Mounting tool, 7...Medium heat tiller groove, 71...Transmission case, 72...Medium heat 11 plow shaft, 73
...Medium heat tilling blade, 73a...Boss part, 73b...
Cultivating blade (blade body), A...tractor. Patent applicant: Kobashi Kou Co., Ltd. agent, patent attorney: Makoto Kobashi, patent attorney: Susumu Tsuki, patent attorney

Claims (1)

[Claims] The device has a mission case in the center, and with this mission case as a base, left and right disk rotors, each consisting of a plurality of disks attached to a rotating shaft at a predetermined pitch, are arranged at a predetermined gearing angle on both the left and right sides. and configured to rotationally drive the left and right disc rotors from the mission case via a power transmission system,
At the front of each inner end of the left and right disc rotors, there is a left and right central tilling shaft that rotates in the up-cut direction via a transmission case that receives power from the respective disc rotation shafts.
The central tilling shaft of the group is parallel to the disk rotation axis and is arranged so as to form a shape in plan view with respect to the 11-direction center line of the left and right disk rotors, and a plurality of central tilling blades are attached to each of the left and right central tilling shafts. 1. A disc-type rotary tiller, characterized in that the rotary tillers are mounted so that the rotary trajectories of the tips of the tiller blades vary from each other and cross-rotate to prevent residual tillage.