JPH0343002A - Ridging and tilling device - Google Patents

Abstract

PURPOSE:To prepare ridges having various kind of shapes ranging from a low ridge having wide width to a high ridge having narrow width by moving a ridge forming device back and forth according to inclined angle of lateral tilling claw shafts. CONSTITUTION:Lateral tilling claw shafts are inclined back and forth from a position perpendicular to the forward direction so as to form lateral tilling claw shafts 22 and 22 in a truncated cheuron shape and a ridge forming device 27 is moved back and forth according to the inclination of tilling claw shafts. Ridges having various shape are prepared by inclined angle of the tilling claw shafts and these ridges are accurately formed into a desired shape by a ridge forming device positioned directly behind the tilling claw shafts.

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a furrow tilling device attached to the rear of an agricultural tractor or the like to perform various tilling operations.

In conventional rotary tillage equipment, by changing the type or arrangement of the tilling claws installed on the tiller claw shaft,
It was designed to handle various tillage operations such as ridge raising, ridge breaking, furrow raising, rough raising, and soil crushing, but since replacing the tiller claw shaft is a troublesome task, the tiller claws are left in place and the tiller is not used. For example, Japanese Unexamined Patent Publication No. 61-285902 discloses a device that can create various working conditions by changing the direction of soil splashing by changing the angle of the claw axis back and forth to the left and right. ing.

The present invention aims to further improve the rotary tiller in which the angle of the tiller claw axis is variable as described above, and to provide a furrow tiller particularly suitable for ridge raising work. It is.

And for this reason, in the present invention, in a furrow cultivating device having two right and left tilling claw shafts, a ridge shaper is disposed behind the tilling claw shafts, and the left and right tilling claws The shafts can be tilted back and forth from a position perpendicular to the direction of travel so that they mutually form a figure eight shape, and the ridge shaper can be moved back and forth in accordance with the inclination of the tilling claw shaft.

According to the present invention, it is possible to carry out work such as raising the ridges of inner piles, outer pads, and intermediate tilling with the tilling claw axis oriented perpendicular to the direction of movement. By tilting the nail shaft back and forth from the above-mentioned perpendicular direction and selecting an appropriate angle of inclination, it is possible to create ridges of various shapes, from wide and low ridges to narrow and high ridges. are precisely shaped into the desired shape by a ridge shaper located immediately after the tiller shaft.

The ridge shaper can be moved back and forth depending on the inclination angle of the tiller claw axis, so the tiller claw axis can be tilted backwards at a large angle without interfering with the ridge shaper, allowing a variety of shapes to be created over a wide range. You can make ridges. Further, since the ridge shaper is always located immediately behind the tilling claw axis regardless of the inclination angle of the tilling claw axis, the ridge formed by the tilling claw can be efficiently shaped into a desired shape.

The ridge shaping device is equipped with an inner ridge shaping plate that adjusts the shape of the outer surface of the ridge, and a flat ridge shaping plate that flattens the top surface of the ridge as necessary. By providing it movably, it is possible to easily adjust the position of the inner filling shaping plate during the movement determined by the inclination angle of the tilling claw shaft.

sharp evidence Hereinafter, the present invention will be described with reference to an illustrated embodiment.

FIG. 1 is an overall side view of a furrow cultivating device 1 according to the present invention. This ridge cultivation device 1 is connected to a lower link 50 that is provided in a mission case 3 of a tractor 2, which is schematically indicated by a phantom line, so as to be able to swing up and down. The lower link 50 is connected via a lift rod 52 to a lift arm 4 that is provided on a hydraulic cylinder 51 provided on the upper part of the transmission case 3 so as to be able to swing up and down. It is also pivotally connected to a bracket 53 provided on the vehicle body above the mission case 3, and the tip of an upper link 54 extending from this is pivotally connected to a frame member 5 attached to the furrow tilling device 1.

And the PT protruding from the rear end of the mission case 3
Power is transmitted from the O-shaft 6 to the input shaft 8 via the universal joint shaft 7.

As shown in FIGS. 2 and 5, the input shaft 8 is rotatably supported by a gear box 9 fixed at the center of the front end of the furrow cultivating device 1, and projects forward from the gear box 9. A bevel gear 10 is fixed to the inner end located inside the gear box 9.

Inside the gear box 9, a connecting shaft 12 whose both ends are rotatably supported by bearings 11 extends in the left-right direction, and a bevel gear 13 fixed to the connecting shaft 12 meshes with the bevel gear 10. There is.

Both ends of the connecting shaft 12 protrude left and right from the gear box 9,
The left and right drive shafts 1 are connected via universal joints 14, respectively.
5.15. A joint box 16 surrounding a universal joint 14 is provided on each side of the gear box 9, and the joint box 16 is pivotally connected to the gear box 9 about a vertical axis passing through the universal joint 14. .

Each drive shaft 15 has an inner end supported by a joint box 16 via a bearing 17, extends from the joint box 16 to both left and right sides, and has an outer end rotatably supported by a chino case 18 via a bearing 19. ing. As shown in FIGS. 2 and 6, the Cheno case 18 is fixed to the joint box 16 via a rigid stem member 20.
8 itself is also rigidly constructed. A sprocket 21 is fixed to the drive shaft 15 within a cheno case 18. The chino case 18 hangs downward from the drive shaft 15, and a tilling claw shaft 22 is rotatably supported at the lower end thereof parallel to the drive shaft 15. A chino 24 is provided between the sprocket 23 attached to the tiller shaft 22 and the sprocket 21.

Each of the tilling claw shafts 22, one each disposed below the left and right drive shafts 15, 15, is supported at its intermediate portion by the chino case 18, and extends to both sides of the chino case 18. A desired number of hatchet claws (cultivating claws) 25 are attached to the extension portions on both sides at appropriate mounting angles (7th
(see figure). In this embodiment, each of the left and right tilling claw shafts 2
A blade rotor 26 is attached to the outer end of 2.

A ridge shaper 27 is disposed behind the drive shaft 15 and the tiller claw shaft 22. The ridge shaper 27 has a main frame 28 made of hollow square 5.1 material extending left and right over the entire inside of the ridge cultivating device l, and has a sliding plate 29 fixed to the main frame 28 and extending forward. It is attached to the furrow tilling device 1 by being mounted so as to be able to slide back and forth on a base plate 30 which is fixed to the main body of the furrow tilling device 1 and extends rearward from the gear box 9. ing. The rear ends of connecting pieces 31 are pivotally attached to both rear sides of the sliding plate 29, and the front ends of these connecting pieces 31 are pivotally attached to the outer end portions of the left and right joint boxes 16, respectively. Therefore, when the sliding plate 29 is slid backward along the base plate 30, the left and right joint boxes 16 are moved to the gear box 9.
The left and right drive shafts 15 are also rotated by the same angle around the pivot axis of the universal joint 1.
4, and forms an eight-shape opening toward the rear, as shown by the broken line in Figure 2. At this time, joint box 16
The left and right tilling claw shafts 22 connected to the drive shaft 15 via the step member 20 and the chain case 18 also rotate together with the joint box 16 and the drive shaft 15, forming an eight-shape shape. In other words, the tilling claw shaft 22 forms a gearing angle α. At this time, the ridge shaper 27 moves backward in its entirety in accordance with the rotation of the tilling claw shaft 22, so the tillage claw shaft 22 or the tilling claws 25 and 26 implanted therein interfere with the ridge shaper 27. Therefore, a large gearing angle α can be obtained.

The sliding plate 29 and the base plate 30 may be manually slid against each other and fixed with bolts or the like at an appropriate adjustment position. It is also possible to provide a screw device therebetween and to slide the sliding plate 29 relative to the substrate 30 by operating the screw device with a handle. Alternatively, the sliding plate 29 may be driven by a hydraulic cylinder device to slide on the substrate 30.

Support members 32 are supported on both left and right sides of a main frame 28 of the ridge shaper 27 so as to be slidable along the main frame 28, and can be fixed at desired positions with bolts 35. The strut member 32 extends downward at right angles to the main frame 28, and a support ring 33 is pivotally supported at the lower end. The ridge cultivating device 1 has the lower link 50 and the lift rod 5 at the front.
2. It is supported by the tractor 2 via the lift arm 4 and the upper link 54, and is supported by a support wheel 33 whose rear part is in contact with the ground. At the lower ends of the left and right support members 32.32, as shown in FIGS. 3 and 4, there is also an internal shaping plate 34.3 having an arcuate cross section that extends upward while curving inward.
4 are provided facing each other. By changing the mounting position of the support member 32 to the main frame 28, the distance between the left and right internal shaping plates 34, 34 can be made wider as shown by the solid line in FIG. 3, or narrowed as shown by the broken line. , can be changed arbitrarily. This internal shaping plate 34 is
The hatchet claws 25 of the left and right tilling claw shafts 22 and the blade rotor 26
This is to bring the soil to the center and shape the shape of both sides of the internally filled ridge, but when the tilling claw shaft 22 is tilted backward, the shape is created according to its rotation angle (Guyang angle α). Since the width of the ridge changes, use the left and right shaping plates 3 as shown above.
4. Changes during flight can be accommodated by changing the interval between 34 and 34.

A pair of left and right brackets 36 are fixed to the upper surface of the main frame 28, at an intermediate portion between the mounting positions of the left and right support members 32. The front part of this bracket 36 is bent downward and hangs down 5.
The rear surface 57 of the bent portion is attached so that it can be slid up and down, and is fixed by bolts 38. The lower end of each lifting rod 37 is fixed to a single rod member 37a extending in the left-right direction, and a flat ridge shaping plate 39 is attached to the member 37a so as to be movable up and down via a guide member 39a. Therefore, the height of the flat ridge shaping plate 39 can be arbitrarily adjusted by loosening the bolt 38 and moving the lifting bar 37 up and down, or by moving the shaping plate 39 up and down with respect to the bar member 37a using the guide member 39a. can. This flat ridge shaping plate 39 is used to flatten the upper surface of the ridge which has been filled in as described above to form a flat ridge, if necessary.

In order to prevent soil raised by the machete claws 25 and the like from flying upward, the upper part of the tilling claw shaft 22 is covered with a cover 40 provided on the main body of the furrow tilling device l. However, when the tilling claw shaft 22 rotates and tilts rearward as described above, the outer end portion of the tilling claw shaft 22 protrudes rearward beyond the range of the cover 40, and the ridge shaper 27 also moves rearward. , there is a portion above the tilling claw shaft 22 that is not covered by the cover 40.

Therefore, in this embodiment, as can be seen from FIG.
The sliding member connected to the ridge shaper 27 (sub-cover 4 on the opposite side)
1 is fixedly installed, and the sub cover 41 moves rearward together with the ridge shaper 27 to cover the portion not covered by the cover 40.

Figures 8 to 10 show the tilling claw shaft 22 and the hatchet claw 25.
3 is a schematic diagram illustrating various setting states and the shapes of ridges formed according to the settings. In Figure 8, the left and right tilling claw shafts 2
2.22 forms a straight line perpendicular to the traveling direction a, and each tilling claw shaft 22 is set such that the outer hatchet claw 25a and the inner hatchet claw 25b face each other. If the tilling claw shaft 22 and the hatchet claw 25 are set in this way, two ridges 42 on the left and right can be created as shown in the lower part of the figure.
．． 42 can be done. If the flat ridge shaping plate 39 is set at an appropriate height, ridges 42 with flat upper surfaces can be obtained as shown by the broken lines in the figure. When the left and right tilling claw shafts 22, 22 are arranged in a straight line in this way, in addition to the above-mentioned ridge-raising work, it is of course possible to perform inter-tilling between crops, weeding, cultivating soil, etc. .

In FIGS. 9 and 10, the left and right tilling claw shafts 22
．． 22 is inclined rearward in a figure eight shape, and the hatchet claws 25 on each tilling claw shaft 22 are all directed inward. According to such an arrangement, a single ridge 42 is formed in the center, but the width and height of the ridge 42 vary depending on the magnitude of the Guyang angle α. 9th
In the figure, since the gearing angle α is relatively small, the width h1 of the ridge 42 is relatively wide and the height H3 is relatively low. On the other hand, in FIG. 1O, the gearing angle α2 is relatively large, so the width W of the ridge 42 is relatively narrow and the height H2 is relatively high. In addition, the ridge 42 in FIG. 9 is a ridge built up to a height H and made into a flat ridge by increasing the height by the flat ridge shaping plate 39. Shaped. The ridges 42 in FIG. 10 are shaped using only the inner ridge shaping plate 34, without using the flat ridge shaping plate 39, which is set back to a high position.

As described above, according to the present invention, the left and right tilling claw shafts are tilted back and forth from a position perpendicular to the direction of travel so that they mutually form a figure eight shape, and the tilt angle is adjusted appropriately. Depending on the selection, it is possible to create ridges of various shapes, from wide and low ridges to narrow and high ridges, and these ridges can be created efficiently and accurately using the ridge shaper located just behind the tilling claw shaft. Can be shaped into desired shape.

In addition, the ridge shaper can be moved back and forth depending on the inclination angle of the tilling claw axis, so the tillage claw axis can be tilted at a large angle without interfering with the ridge shaper, allowing a variety of shapes to be created over a wide range. You can make ridges.

Furthermore, the internal shaping plate provided on the ridge shaping device so as to be movable from side to side makes it possible to efficiently shape the ridges by following the ridges of various shapes formed by the tilling claws. .

[Brief explanation of drawings]

Fig. 1 is an overall side view of the furrow cultivating device according to the present invention;
The figure is a top view of the main parts, Figure 3 is a rear view of the same, Figure 4 is a perspective view of the furrow tilling device seen from the rear, and Figure 5 is the V of Figure 1.
6 is a perspective view of the vicinity of the upper part of the Cheno case, and Figure 7 is a perspective view of the vicinity of the lower part of the Cheno case.
FIGS. 8 to 10 are schematic diagrams showing the setting states of the tilling claw shaft and the tilling claws, and the shapes of the ridges created accordingly. l...Rige tilling device, 2...Tractor, 3...Mission case, 4...Arm member, 5...Frame member, 6...PTO shaft, 7...Universal joint Axis, 8...Input shaft, 9...Gear box, 10...
・Bevel gear, 11... Bearing, 12... Connection shaft, 13.
...Bevel gear 14...Universal joint, 15...Drive shaft, 16...Joint box, 17...Bearing, 18...
Cheno case, 19...bearing, 20...steer member, 21...sprocket, 22... tilling claw shaft, 23
... Sprocket, 24... Cheno, 25... Hatchet claw, 26... Vane rotor, 27... Ridge shaper, 2
8... Main frame, 29... Sliding plate, 30... Base (opposite), 31... Connection piece, 32... Support column member, 33...
...Support wheel, 34...Inner shaping plate, 35...Bolt, 36...Bracket, 37...Elevating rod 37.3
8... Bolt, 39... Flat ridge shaping plate, 40... Cover, 41... Sub-cover, 50... Lower link, 5
1... Hydraulic cylinder, 52... Lift rod, 53
...Bracket, 54...Upper link.

Claims (2)

[Claims] (1) In a furrow tilling device having two right and left tilling claw shafts, a ridge shaper is disposed behind the tilling claw shafts, and the left and right tilling claw shafts are advanced so that they mutually form a figure eight shape. A ridge cultivating device characterized in that it is capable of tilting back and forth from a position perpendicular to the direction, and that the ridge shaper is movable back and forth in accordance with the inclination of the tilling claw shaft. (2) The ridge cultivating device according to claim 1, wherein the ridge shaping device is provided with an inner ridge shaping plate movable from side to side.