JPS60256303A - 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 Field of Application] The present invention relates to a disc-type rotary tiller that is connected to the rear part of a tractor via a three-point support link mechanism so as to be able to move up and down, and performs a tilling operation, and in particular, the The present invention relates to a disc-type rotor tilling device in which a disc is rotationally driven by the power transmitted by the disc.

[Conventional technology]

Conventionally, a disc-type rotary tiller in which a disc plow like the one described above is forcibly driven to rotate has long been known as the British Patent No. 8! I7,923 specification m etc. are known, and recently in Japan, the Utility Model Application Publication No. 57-542
The one described in the January publication has been proposed. The first conversion floor of this type is the disk 1 that extends in the left and right direction.
The coater is configured symmetrically with the medium-heat transmission case as the boundary, and supports the left and right disc rotors in a horizontal plane so that the gearing angle can be adjusted back and forth in the direction of travel. A joint that forces the left and right disc rotors to rotate by transmitting power from the tractor PTO shaft through a transmission shaft, and the disc plows on the left and right rotors are arranged so that their curved concave surfaces face inward or outward from each other. By doing so, the soil is plowed and turned into high ridges or broken ridges.

[Technical issues of the invention]

By the way, in the above-mentioned tillage device, when the disc plows of the left and right disc rotors are attached so that the curved concave surfaces face inward to each other and plow the soil in a high ridge shape,
The discs at each inner end of the left and right disc rotors must be spaced a certain distance apart.
If the tilled soil is not dug up in the center between the left and right disks on the inner end side in advance in a split shape, the soil clod that is plowed and turned over with the disks will not be lubricated in the center.
11;□ There is a problem in that the soil overlaps with the soil, causing the central part to become locally high and leaving uncultivated land (remaining cultivation) in the central part. As a means to solve this problem, conventionally, in center drive type disc rotary tillers, a transmission case that receives power from a central transmission case protrudes in front of the inner ends of the left and right disc rotors. Rotate to the left 6 perpendicular to the direction of movement of the aircraft and in the up-cut direction'? It is known to have a protruding central tilling shaft and a hatchet claw with a horizontal blade bent outward on this shaft. With this method, the broken soil plowed with the machete claws and the straw culms scattered on the field surface are scattered in the direction of movement of the machine, that is, towards the tractor, so that the opening in the center is sufficiently opened. Not only does it have some obvious flaws, but straw culms, etc. 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, reducing the weight Φ. There was a problem. Therefore, the applicant first placed a pair of driven or self-rotating left and right central disks in front of the inner ends of the left and right disk rotors, with their curved concave surfaces facing outward and circumferentially relative to the direction of travel. We proposed a system in which the front parts are pivoted in a V-shape so that they are close to each other, but in this method, the divided soil clods are only flipped left and right by the central disk, and the divided soil clods are Since the inner disc of the disc rotor returns the plow to the center and causes the overlapping phenomenon, the problem of the central part becoming locally high still remains unresolved, and residual plowing occurs below the middle of the central disc.
In order to dispose of this residual plowing, a chisel or the like must be installed, which increases traction resistance, and furthermore, it is difficult to adjust the plowing depth in the center.

[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 f chair floaters. Large soil clods can be plowed in a diagonal manner alternately and diagonally forward to the left and right, making it possible to reliably form an opening in the center of the cultivated soil, and the soil plowed in the middle can be plowed in front of the left and right disc rotors. It is evenly divided and dispersed, and the tillage remains are turned into flat areas without causing localized heights.
The disc type has been improved so that the tillage depth can be adjusted relatively easily in the center, and the traction resistance can be reduced by eliminating the need for a chisel for processing residual tillage. The object of the present invention is to provide a low-kuri tilling device.

[Technical means of the invention]

In order to achieve this object, the present invention has a mission case in the middle of the device, and uses this mission case as a base for a left and right phase system, which is constructed by attaching a plurality of disks to the rotating shaft at a predetermined pitch on both the left and right sides. Disc rotors are 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 pairs that rotates in the up-cut direction via a transmission case that receives power from the respective disc rotation shafts. The disk rotor is arranged in a rectangular shape in plan view with respect to the center line in the middle direction.
A plurality of central tilling blades are attached to each of the left and right central tilling shafts so that the tip rotation trajectories of the tilling blades overlap and cross-rotate to prevent residual tillage. This is characterized in that the mounting angle of the transmission case is configured to be changeable. [Embodiment 1] An embodiment of the present invention will be described below 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.This tilling device is equipped with a mission case 1 in the widthwise center of the device body, and this mission case 1 has an input input on the front. A shaft 11 is protruded, and this is a dry shaft as seen in the well-known tractor-mounted agricultural machine.
o It is transmission-connected to a PTO shaft 13 installed in the rear section 4 to receive power transmission 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 [lt
2, the transmission case 1 is connected to the rear part of the tractor 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 disc rotors 3 each have a plurality of disc plows 3 (two disc plows in the embodiment shown in the drawings) mounted on a horizontally supported rotor shaft 31.
2 are attached at a predetermined pitch, and the disc plows 32 on the left and right rotors are symmetrically installed so that their curved concave surfaces face inward to each other, and the disc plows 32 on the left and right rotors are A rotor shaft 31 is pivotally supported between the left and right vertical portions of a rotor 5 room 33, each of which has a circular shape and is independently framed by a rotor frame 33 which also serves as a transmission frame. The left and right rotor frames 33 have a vertical pin 36 connected to the bracket 35 fixed to the mission case 1, and a bracket 34 is attached to the upper part of each inner end side of the rotor frame 33.
The left and right frame 33 can be pivoted back and forth in a horizontal plane using the vertical bin 36 as a fulcrum.
This makes 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:
At the upper ends of a pair of left and right support frames 41 erected upward from the front ends of the struts 21, a threaded rod 43 that holds a rotary handle 42 to the right on the tractor A side is rotatably supported. A threaded cylinder 44 to be screwed into extends rearward,
The rear end of the threaded cylinder 44 is pivoted at the rear end pivot position of the strut 21 to the upper end of a swinging rod 46 which is pivotally supported by a pivot shaft 45 so as to be rotatable in the front-rear direction. On both sides of the upper end of the rod 46, upper g[l! The rear end portions of swing arms 47, 47 that project rearward from the rotor frame 33 below the vertical bin 3G 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 about the pivot @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 output @14.14 protruding in the left and right direction, and a power transmission shaft 16 connected to both output shafts 14.14 via a universal joint 15 runs inside the rotor frame 33 sideways. The other end is transmission connected to a side transmission system in a transmission case 37 formed on the outer end side of the rotor frame 33, and the rotor shafts of both disc rotors 3, 3 are connected to each other via this lead transmission system. Rotational power is transmitted to 31. The power transmission shaft 16 has a structure in which the shaft portion can be expanded and contracted.
Further, the disc computer 3 is designed to rotate at a high speed (approximately 3.5 times faster than the traveling speed of the tractor). One end of a link rod 38, 38 is hammered into both left and right sides of the rear end of the transmission case 1, and the other end extends approximately parallel to the rotor frame 33 and is connected to the rear of the transmission case 37. The link rod 38 forms a parallel link with the pivot point of the support arm 39 with the transmission case 37 and the vertical pin 36. are doing. Support arm 3
9. , 39 is equipped with a column 51 that pivotally supports a gauge wheel 5 so that its downward position can be adjusted. It can be regulated. The gauge wheel 5 is connected to the left and right discs [the computer 3
．． It is designed to rotate around an axis perpendicular to the direction of travel, almost unaffected by the gearing angle adjustment in step 3. Further, a safety cover 6 is provided above the outer part of the rotor frame 33, and this safety cover covers the disc plow 3.
2 and is provided with a fitting 61, to which a scraper, a soil reversing plate, etc. of the isk plow 32, although not shown, are removably installed. The left and right disks configured as described above [1-ta 3.3
A medium-heat tillage processing mechanism 7 is provided at the center front side of the inner end side. This central tillage processing mechanism 7 operates on each day on the left and right.
A transmission case 71 is protrudingly provided at the inner shaft end of each of the evening shafts 31, 31, and is supported slightly forwardly and downwardly on the rotor frame 33 through a plurality of mounting holes 71a1 and bolt nuts 71b so that the mounting angle can be changed. Left and right transmission case 7
1, a pair of central tilling shafts 72 rotate inwardly in the up-cut direction, parallel to the rotor shaft 31, and parallel to the center line of the left and right disc rotors 3.3 in the J direction. It is supported by a shaft that protrudes in a line with the direction of vision, and on each central tilling shaft 72, 72 of the left and right sets,
A propeller-shaped central tilling blade 73 is attached. In the present embodiment, the central tilling shaft 72 is [1-9 shaft 31 is 110
rpm, but it rotates faster than this (165 rpm).
The speed is increased to rotate at R (approximately 1.5 times). Further, the central tilling blade 73 has a semicircular tilling blade (blade body) 73b on its boss portion 73a, which is wider on the tip side than the base end.
is fixed to the boss part 73a (the axis of the central tilling shaft 72) in a cross-tone manner so that the inner end side is the front side and the outer end side is the rear side with respect to the rotation direction. Moreover, the central tilling blades 73.73 attached to the left and right central tilling shafts 72.72 have two tilling blades attached to each central tilling shaft 72.72, as shown in FIGS. 3 and 4. 73b are shifted in phase by 180 marks in the rotation direction, and the relationship between the left and right central tilling blades 73 and 73 is such that the tip rotation trajectories of the respective tilling blades 73b overlap with each other and do not cause residual tillage. It is mounted for cross-rotation on each central tilling shaft 72,72. In the tilling device configured in this way, the tractor
When performing plowing work by advancing l, the tractor's PTO shaft 1
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 from the drive shaft 12 from the drive shaft 12. The plow is plowed inwards from each other and inverted to create a high ridge shape (Kamabok shape).Prior to the left and right discs [11-fold inversion by computers 3 and 3], as shown in Fig. 4, the central tillage is carried out. The central tilling blade 73 of the processing mechanism 7 rotates in the up-cut direction at a higher speed than the disc rotor shaft 31 and cuts into the uncultivated land in front of the middle part of both disc rotors 3, 3. The soil in the center of the soil is tilled in such a way that it is sliced alternately diagonally forward to the left and right of a relatively large lump of soil, and an opening is formed in the center of the tilled soil. At this time, the pair of central tilling blades 73, 73 rotate crosswise so that the rotational trajectories of the tips of the left and right tilling blades 73b overlap, and are formed in a semicircular shape that is 1] wide from the base end to the distal end. The center tilling blades 73 and 73 are installed obliquely with respect to the boss portion 73a so that the inner end faces forward in the direction of rotation, and are curved in the shape of a propeller. By plowing the soil alternately to the left and right diagonally forward, there will be no residual tillage left in the center of the cultivated soil, and the center of the cultivated soil will be plowed in half to ensure that the center of the cultivated soil is plowed in half. An opening is formed in the middle area, and the subsequent plowing by the inner disc plow 32 towards this middle area causes the inverted soil to be backfilled. It is cultivated evenly without any occurrence. Depending on the state of the soil being tilled, the disc rotor 3, 3
The gearing angle of the gearing angle is adjusted. At this time, the driver who operates the tractor 8 with the disc rotors 3 and 3 in the working state and driving the tractor turns backwards and turns the rotary handle of the gearing angle adjustment mechanism 4. The gearing angle can be easily adjusted by rotating the handle 42 to change the gearing angle, or by raising the tilling device via the three-point linkage supporter $2 and rotating the rotating handle 42. The adjustment angle of the Gi Young angle is usually about 22 to 32 mm, which is not a very large range, and the adjustment of the Gi Young angle has almost no effect on the central tillage processing mechanism 7. Furthermore, the disc plow 32 or 11 plow blade 73b1
) becomes worn and the plowing depth becomes uneven, etc.
Remove the bolt/nut 71b, select the tapping hole 71a, and tighten the bolt/nut 7111 (tt) to remove the transmission case 11 from the rotor shaft 31 (the q angle is changed and the plowing depth of the 11 rotor blade 73b is adjusted). [Effect of the Invention] Thus, according to the present invention, the entire cultivated soil can be disc-cultivated without leaving any uncultivated land (residual tillage) between the left and right disc rotors. In this case, the medium-fire tillage processing mechanism includes a pair of left and right center parts 11 mounted on the front side of each inner end of the left and right disc rotors and rotating in the up-cut direction via a transmission case that receives power from the disc rotation shaft. The private shafts are arranged parallel to the disc rotation axis and form a V-shape in plan view with respect to the center line in the width direction of the left and right disc rotors, and a plurality of central tilling blade bodies are arranged on the left and right central tilling shafts, respectively. The tilling blades are mounted so that their tip rotation trajectories overlap and intersect with each other, and the mounting angle of the transmission case with respect to the disk rotation shaft is changed to an OL, so that the following effects can be obtained. ■The left and right central tilling blades rotate in a cross-rotated manner with their tip rotation trajectories overlapping each other, and the left and right tilling blades alternately move the soil diagonally forward to the left and right. During distribution, the soil in the medium-fired area is reliably dug to the left and right, and the cultivated soil is almost evenly distributed over the entire front area of the disc rotor, so that no residual tillage is left (it is ensured that the soil remains in the center of the cultivated soil). It is possible to form a predetermined opening in the middle, and plowing and inversion using a disc rotor can be done evenly without causing localized areas. Since the plowing is carried out in a manner that generates a large amount and distributes it diagonally forward to the left and right, the aggregate structure in the tillage remains is maintained, and there is no a3 phenomenon that inhibits the effect of disc tillage. Since the tilling blade rotates once and no residue remains, there is no need to install a chisel or the like for processing the remaining tillage in the middle between the left and right central tilling processing 11, and by omitting this, the configuration can be improved. It can be simplified and the traction resistance can be reduced.Furthermore, since the mounting angle of the transmission case with respect to the disc rotation shaft can be changed, the tilling depth of the central tilling blade can be adjusted as desired. - Excellent effects such as being able to adapt to #1 depth in the evening and being able to perform plowing work with a high degree of VI can be obtained.

[Brief explanation of drawings]

The attached 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, and Fig. 4 It is an action explanatory diagram. 1...Mission case, 11...Input shaft, 12...Drive shaft, 13
...PTO@, 14...Output shaft, 15...Universal joint, 1G...Power transmission shaft, 2...Three-point support link mechanism, 21...Strut, 22... Top link, 23
...Lower link, 3...Disc rotor, 31...Rotor shaft, 32...Disc plow, 33
... Rotor frame, 34.35... Black t-
, 36... Vertical pin, 37... Transmission case, 38...
... Link rod, 39... Support arm, 4... Guyang angle adjustment mechanism, 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 ...Central Cultivation Center]! I! Mechanism, 71...Transmission case, 71a...Mounting hole, 71b
...Boltnut, 72...Central tilling shaft, 73...
・Central blade, 73a...boss part, 731)...
Cultivating blade (blade body), A...tractor. Procedural amendment (formality) October 25, 1980 Commissioner of the Patent Office Gakudon Shiga 2, Title of the invention. Disc-type rotary tiller 3, relationship with the amended case Patent Applicant: 684-4 Nakaawashi, Okayama City, Okayama Prefecture, Agent 10) 5. Date of amendment order 6, all drawings subject to amendment 7, engravings of drawings containing amendments (no change in content)

Claims (1)

[Claims] The device 1ff has a mission case in the center, and with this mission case as a base, left and right sets of disk rotors, each consisting of a plurality of disks attached to a rotating shaft with a predetermined pitch, have a predetermined gearing angle on both the left and right sides. and configured to rotationally drive the left and right disk rotors from the mission case via a power transmission system, wherein - The central tilling shaft of the left and right sets rotates in the up-cut direction via a transmission case that receives power from the shaft, and the central tilling shaft of the left and right sets is parallel to the disc rotation axis, and the central tilling shaft of the left and right sets is parallel to the center line in the width direction of the left and right disc rotors. The channels are arranged to form a shape towards the eye, and the medium heat cultivation axis on the left and right,
Each of the plurality of central tilling blades is mounted so that the rotating loci of the tips of the tilling blades overlap and cross-rotate so as not to cause residual tillage, and are aligned with the disk rotation axis. A disc type rotary tiller characterized in that the mounting angle of the transmission case is configured to be adjustable.