JP2001025302A - Rotary tilling shaft grass roll prevention device - Google Patents

Abstract

(57) [Summary] [Problem] When long culm such as long grass, straw or rush is overgrown or scattered on excavated topsoil in a field, the long culm between the cultivating claw shaft and the transmission case in a rotary cultivator. Winding and damage to bearing seals. A tilling claw shaft (2) on which tilling claws (1) are arranged and mounted.
Is mounted on a drive shaft 10 which is rotatably supported by a lower part of a transmission case 4 in which the transmission device 3 is mounted, and which protrudes laterally. The transmission case 4 and the tilling claw 1 on the end side of the cultivating claw shaft 2 are connected to each other. The main configuration is a device for preventing weeding of a rotary tilling shaft, which is configured by interposing a rotating disk 5 between the rotating disk 5 and the outer diameter of the rotation locus of the rotating disk 5 and rotation of the tilling claw 1. A configuration in which the outer diameter of the trajectory is substantially the same, or an intermediate cylindrical portion 5a for allowing the outer peripheral portion of the rotating disk 5 to approach the transmission case 4 in the radially intermediate portion of the rotating disk 5
Or a configuration in which the intermediate cylindrical portion 5a covers the protruding outer periphery of the drive shaft 10, or a configuration in which the rotary disc 5
In this case, the rotary tilling shaft is provided with a device for preventing grass winding of the rotary tilling shaft.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a device for preventing grass from rolling on a rotary tilling shaft, and belongs to the technical field of agricultural machinery.

[0002]

2. Description of the Related Art Conventionally, a rotary tiller has been used to prevent long culm grasses and rushes remaining in a field from being wound around a mounting portion of a tilling nail or a tilling nail shaft with a tilling operation. Means to prevent this have been devised, and there are attempts to put it to practical use. To describe an example of the known art, a linear member is stretched in parallel with the cultivating claw axis as a winding prevention member between the cultivating claws at the left and right ends arranged and mounted on the cultivating claw axis. There is.
The wrapping prevention member removes grass that is to be wrapped while rotating the outer circumference of the cultivating claw shaft while keeping the outer circumference of the cultivating claw shaft parallel at the time of tilling work. Is configured to prevent

[0003]

In the above-mentioned winding prevention means, the winding of the grass around the cultivating claw shaft hardly occurs, but from the shaft end of the cultivating claw shaft to the bearing member side (such as a transmission case). In extreme cases, there is a problem that oil leaks from the seal portion of the bearing member.

[0004]

SUMMARY OF THE INVENTION The present invention takes the following technical means in order to solve the above-mentioned problems. That is, the tilling claw shaft 2 on which the tilling claws 1 are arranged and mounted is mounted on a drive shaft 10 which is supported by a lower part of a transmission case 4 in which a transmission device 3 is provided and projects laterally.
And a main part of a device for preventing the winding of a rotary tilling shaft, which is constituted by interposing a rotating disk 5 between the sword 4 and the cultivating claw 1 at the end of the cultivating claw shaft 2. A configuration in which the outer diameter of the rotation trajectory of the rotating disk 5 and the outer diameter of the rotation trajectory of the tilling claw 1 are substantially the same, Intermediate cylindrical part 5 for approaching in four directions
a, a configuration in which the intermediate cylindrical portion 5a covers the projecting outer periphery of the drive shaft 10, and a configuration in which the cultivating claw shaft 2 is supported as a side drive rotary support via a rotating disk 5 at each of the left and right ends of the cultivating claw shaft 2. Characterized in that the mounting configuration is folded in
This is a device for preventing the tall cultivation shaft from winding.

[0005]

Embodiments of the present invention will be specifically described below with reference to the drawings. First, the upper transmission frame 6
As shown in FIG. 1, a central transmission case 21 is provided at the center in the left-right direction, and a driving force on the driving side is transmitted to an input shaft 22 connected to a PTO shaft of a mobile agricultural machine, and this driving force is transmitted to an upper portion. The power is transmitted to the transmission shaft 7 provided in the motive frame 6 via bevel gears 23 and 24. The transmission case 4 is connected to one side of the upper transmission frame 6, and the supporting machine frame 8 is connected to the other side so that the transmission case 4 is in a hanging state. The tilling claw shaft 2 is disposed between the hanging lower end portions. ing. And, in the transmission case 4, as shown in FIG.
A lower sprocket 11 having an upper portion engaged with the upper sprocket 9 of the transmission shaft 7 and a lower portion pivotally mounted on the drive shaft 10.
And a transmission chain 12 composed of three members, that is, a transmission chain 12 which is mounted on the transmission chain.

As shown in FIG. 1, the cultivating claw shaft 2 has one end portion on which the small-diameter vertical wall 25 of the rotating disk 5 and the mounting plate 13 are overlapped to mount the mounting flange 14 of the driven shaft 10.
Then, it is fastened and detached by bolts 15 and fixed.
In the same manner, the other end portion also has the small-diameter standing wall 25 of the rotating disk 5 and the mounting plate 13 overlapped with each other, and is fastened to the mounting flange 17 of the support shaft 16 by bolts 15 so as to be freely detachable and fixed. In FIG. 2, reference numeral 26 denotes a mounting hole,
5, 27 is an opening through which the tilling claw shaft 2 passes.
In the configuration of the rotating disk 5 according to the embodiment, since the retrofitting of the rotating disk 5 is troublesome, it is easy to attach and detach the rotating disk 5 by dividing the rotating disk 5 into 180 degrees.

[0007] The tilling claw shaft 2 is provided on a plurality of claw holders 19 arranged on the shaft, respectively, with the tilling claws 1, 1. . And the tilling apparatus 20 is comprised. As shown in FIG. 1 in the illustrated example, the rotating disk 5 is a disk formed to have a radius substantially equal to the rotating radius at the time of excavation of the tilling claw 1, and is transmitted to one end of the outermost tilling claw 1 side. The rotary disc 5 is provided on the wall side of the transmission case 4 or the support member so as to isolate them between the case 4 side and between the tilling claw 1 side on the other end and the support member 8 side. 8 is attached close to the inner surface side.
Further, as will be described in detail later, the outer diameter of the rotating disk 5 has the same purpose and effect as the radius of rotation of the tilling claw 1 at the time of excavation, which is slightly smaller than the large diameter by about 5 cm.

The rotating disk 5 shown in the figure has a small-diameter standing wall 25 which is fastened together with the mounting plate 13 as described above, a large-diameter standing wall 28 which is displaced substantially parallel to the small-diameter standing wall 25, and an intermediate cylindrical portion which connects the two. 5a, the outer peripheral edge of the large-diameter upright wall 28 is a thin flat plate, and is formed as a punched and cut end face by a press die cut off at 90 degrees. As shown in FIGS. A blade 29 having a V-shaped pointed tip may be used.

Although the tilling apparatus 20 shown in FIG. 1 has been described as an example of a side-drive type tilling apparatus, a center-drive type tilling apparatus can also be used to rotate a rotary disk 5 between a transmission case and a tilling claw. By providing the same, the same operation and effect can be exerted. Tillage device 2 configured as above
0, when the rotational power is transmitted from the fuselage side to the transmission shaft 7, the tilling claw shaft 2 is driven by the upper sprocket 9, the transmission chain 12, the lower sprocket 11, the drive shaft 10, the mounting flange 14,
The power is transmitted in the order of the mounting plate 13 and the rotating disk 5, and the tilling claw 1 is driven to start the tilling operation.

Then, the tilling claws 1, 1. . Performs the tilling work by turning the soil in the field in reverse with the rotation, and at that time, the growing grass and the relatively long culm remaining in the field after harvesting are caught and rotated while rotating. . At that time, the tilling claws 1, 1. . The grass, long culm, rush and the like scattered outside the width of the rotary tilling part are drawn to the cultivating claw shaft 2 side. About the mounting flange 14 and the mounting flange 17 of the support shaft 16 on the supporting machine frame 8 side. However, grass, long culms, rushes and the like scattered inward from the excavated soil surface in the field outside the width of the rotary tilling portion by the rotating disks 5 and 5 are pressed against the body portion by the topsoil. Is cut or pressed and cut, so that part of it is forcibly pulled around the tilling claw shaft 2 and wound around, part of it is shortened and remains on the surface outside the width, and part of it is shaken off Leave.

Since the grass, the long culm, the rush, and the like are pressed by the outer peripheral edge of the rotating disk 5, the grass, the culm, the rush, and the like are cultivated by the tilling claws 1, 1,. . And is wound around the middle portion of the tilling claw shaft 2, but does not enter the mounting end of the tilling claw shaft 2 on the side of the transmission case 4 and the supporting machine frame 8.
As described above, the present invention has almost no invasion of grass, culm, rush, etc. at the mounting end of the tilling claw shaft 2,
The present invention has a feature that there is no failure that develops from the transmission case 4 and the seal 30 of the bearing portion of the support frame 8 to oil leakage due to the wound grass.

Hereinafter, another configuration example will be described. First, the rotating disk 5 shown in FIG. 4 is provided with four mounting holes 31 for rods and wires in the vicinity of the outer periphery of the small-diameter standing wall 25 and opened between the mounting holes 31 of the left and right rotating disks 5. FIG.
As shown by the rods 32, 32. . Can be attached up to four. In the illustrated example, the rod 32 is attached to prevent grass winding, but a wire may be attached. Screws are provided at both ends of the rod 32 and the wire, and nuts 33 are fastened to the small-diameter vertical wall 25 from two sides, inside and outside. With this configuration, grass, straw, rush, and the like to be wound around the tilling claw shaft 2 by the rod 32 or a wire (not shown) can be shaken off by the rod 32 or the wire, or the space can be enlarged even if the wire is wound. It is easy to remove. When the rod 32 is attached near the outer periphery of the small-diameter standing wall 25, the rod 32 also has a reinforcing effect against the left and right inclination of the rotating disk 5 and the outer nut 33 is covered with the intermediate cylindrical portion 5a. Straw, rush and the like can also be prevented from wrapping around the outer nut 33.

The intermediate cylindrical portion 5a of the rotating disk 5 shown in FIG. 4 covers the outer side of the mounting plate 13 of the tilling claw shaft 2 and the mounting flange 14 of the drive shaft 10 while keeping the outer side between the side cover 34 and the mounting plate 13. Because the large-diameter vertical wall 28 has a small gap, the tilling claw shaft 2
The grass, straw, rush, etc., are prevented from entering the mounting plate 13 and the mounting flange 14 of the drive shaft 10 around the outside, thereby improving the durability around the rotating part. Reference numeral 35 denotes a main cover, which covers the upper part of the entire tilling shaft 2, and has left and right ends attached to left and right side covers 34.

The tilling claw 1a shown in FIG. . Of these, the claw adjacent to the left rotating disk 5 has a different configuration. The large diameter side of the claw adjacent to the rotating disk 5 is moved to the transmission base 4 with respect to the claw base 1d.
Alternatively, it is a residual tillage processing claw in which the blade portion 1b is displaced toward the supporting machine frame 8 side. Although not shown, the claw adjacent to the right rotating disk 5 may be the same tilling claw 1a.

An edge blade 1c in which the blade portion 1b is displaced in such a direction as to extend the excavation width substantially along the cross-sectional shape of the rotating disk 5 and the maximum diameter portion is bent inward substantially in accordance with the shape of the crawling treatment claw. As a result, the following operation and effect are produced. Since the tilling claw 1a for residual tilling is displaced near the large-diameter standing wall 28 of the rotating disk 5, the tilling width is increased, and grass, straw, rush, and the like are removed from the tilling processing claw and the rotating disk. The cultivating claw 1, 1. . Because it can be guided in the direction and does not wind grass, straw, rush etc. only in part,
The number of times of removal cleaning can be reduced. In addition, it is possible to dig up to the top soil near the lower part of the transmission case 4 and the supporting machine frame 8, and there is less uncultivated land with the neighbor at the time of reciprocating cultivation. Driving with an agricultural tractor or the like becomes easy.

[0016]

Since the present invention is constructed as described above, the shaft end portion of the tilling claw shaft and the bearing member side (the transmission cable)
This has the effect of preventing winding of grass around the support and the support member).

[Brief description of the drawings]

FIG. 1 is an overall rear view of an embodiment of the present invention, which is partially broken.

FIG. 2 is a side view of an essential part of the embodiment of the present invention.

FIG. 3 is a rear view of the embodiment of the present invention, which is a cutaway view of FIG. 2;

FIG. 4 is another embodiment of the present invention and is a side view of a main part member.

FIG. 5 is a rear sectional view of another embodiment of the present invention, in which the members of FIG. 4 are incorporated.

[Explanation of symbols]

 REFERENCE SIGNS LIST 1 cultivator claw 2 cultivator claw shaft 3 transmission device 4 transmission case 5 rotating disk 8 support machine frame 10 drive shaft

Claims (5)

[Claims] 1. A tilling claw shaft 2 on which tilling claws 1 are arrayed and mounted is mounted on a drive shaft 10 which is supported by a lower portion of a transmission case 4 in which a transmission device 3 is mounted and projects laterally. K
A device for preventing the winding of a rotary tilling shaft, comprising a rotary disk 5 interposed between the stub 4 and the tilling claw 1 at the end of the cultivating claw shaft 2. 2. The rotary winding of the rotary tilling shaft according to claim 1, wherein the outer diameter of the rotating trajectory of the rotating disk 5 and the outer diameter of the rotating trajectory of the tilling claw 1 are substantially the same diameter. Anti-stick device. 3. An intermediate cylindrical portion 5a is provided at an intermediate portion in the radial direction of the rotating disk 5 to make the outer peripheral portion of the rotating disk 5 approach the transmission case 4 direction. Item 3. An apparatus for preventing the winding of a rotary tilling shaft according to Item 2. 4. The device for preventing weeding of a rotary tilling shaft according to claim 3, wherein the intermediate cylindrical portion 5a covers the projecting outer periphery of the drive shaft 10. 5. The tilling claw shaft 2 has a side-drive rotary configuration for pivotally supporting the left and right ends thereof, and the tilling claw shaft 2 has rotating disks 5 interposed at the left and right ends thereof. 3. The device for preventing grass wrapping of a rotary tilling shaft according to claim 1.