JPH08242602A - Tiller - Google Patents

Abstract

PURPOSE: To enable to change a diameter of each tilling claw between top ends without changing the tilling claw. CONSTITUTION: In a tiller having plural tilling claws 2 on a claw fitting body 1 co-rotating with a driving shaft, each tilling claw 2 is fitted tiltably in the rotating direction of the claw fitting body 1 around each claw-fitted position as a center and claw receivers 4 each of which is attached to each tilling claw 2 and receiving the tilted posture of each tilling claw 2 are position-changeably fitted to the claw fitting body 1.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a cultivating device having a plurality of cultivating claws mounted on a claw mount.

[0002]

2. Description of the Related Art Generally, this type of tiller is disclosed in Japanese Utility Model Laid-Open No. 56-104303 and, as shown in FIG. 12, a plurality of tillers A are provided with a pair of insertion holes A1. , Disk-shaped claw mount B that rotates with the drive shaft
And a nail mounting hole B, which corresponds to the insertion hole A1 of each of the plowing nails A.
1 is drilled, the mounting bolts C are inserted through the insertion holes A1 and the claw mounting holes B1, and the nuts N are tightened to the mounting bolts C to fix the respective cultivating claws A to the claw mounting bodies B so that they cannot be tilted. ing.

[0003]

However, each plowing claw A in the above plowing device is fixed by a plurality of mounting bolts C and cannot be tilted even if the fixing bolts C are loosened. When changing the diameter D between the tip edges of the tilling claws A depending on the tilling work mode such as deep plowing / medium tilling, it is necessary to replace all the tilling claws A.

The present invention provides the
It is a main object of the present invention to provide a tilling device capable of changing the diameter between the tip edges of each tillage claw.

[0005]

SUMMARY OF THE INVENTION In order to achieve the above main object of the present invention, the invention according to claim 1 relates to a claw mount 1 that rotates together with a drive shaft 96, as shown in FIG. In a cultivating device having a plurality of cultivating claws 2 mounted thereon, each cultivating claw 2 is mounted so as to be tiltable in the rotation direction of the claw mounting body 1 about a claw mounting position, and the claw mounting body 1 is in contact with each cultivating claw 2. A claw receiving member 4 that comes into contact with each other and receives the tilted posture of each of the tilling claws 2 is attached so that the position can be changed.

[0006]

In the invention described in claim 1, as shown in FIG.
Since the claw receiving member 4 abuts each of the tilling claws 2 and receives the tilting posture of each of the tilling claws 2, each of the tilling claws 2 mounted so as to be tiltable around the claw mounting position is carelessly used during the tilling work. It is possible to prevent tilting, and by releasing the attachment of the claw receiving member 4 and tilting each of the tilling claws 2 in the rotation direction of the claw attaching body 1 around the claw mounting position, each of the tilling claws can be prevented. Two
It is possible to change the diameter D between the tip edges of the tilling claws without replacing the above, and by mounting the claw receiver 4 again at a predetermined mounting position, the tilting posture of each tilling claw 2 can be received. It can be stopped.

[0007]

1 to 4, an engine 91 is mounted on a front upper portion of a body 90, and a first and a first gear which are interlocked with a drive shaft of the engine 91 are provided on a rear side of the body 90. A mission case 92 having a second output shaft is provided, and traveling wheels 94 are provided below the mission case 92 via a traveling transmission case 93 having a power transmission mechanism interlocked with the rotation of the first output shaft. While supporting, a traveling operation handle 95 that extends obliquely upward toward the rear is provided on the upper side of the mission case 92, and a drive shaft that interlocks with the rotation of the second output shaft is provided at the rear end of the machine body 90. A rotary case 97 including a power transmission mechanism having a built-in 96 is attached to the drive shaft 96 of the rotary case 97 in a detachable manner. In the embodiment of FIG. 4, the drive shaft 96
In the figure, a multiple type is shown in which a plurality of tillers are attached, but a single type may be used.

This cultivating device has the drive shaft 96 at the center thereof.
A disk-shaped claw mounting body 1 having a claw shaft tube 10 fitted to
Two claws 2, 2 detachably attached to the claw mount 1 with a phase difference of 180 degrees are provided, and one insertion hole 21, 21 is provided at the base end of each claw 2, 2. There is. It should be noted that the number of tilling claws 2 may be three or more.

As shown in FIGS. 1 and 2, the pawl mounting body 1 is provided with two pawl mounting holes 11, 11 on the inner side in the radial direction with a phase difference of 180 degrees. , 11,
Through the pawl mounting screws 3 and 3 which are inserted through the insertion holes 21 and 21, the plowing pawls 2 and 2 are mounted so as to be tiltable in the rotation direction of the pawl mounting body 1 about the pawl mounting holes 11 and 11, and at the same time, pawl mounting. The claw mounting holes 1 on the radially outer side of the body 1
A plurality of receiving holes 12, 12 are provided in the vicinity of 1, 11 at predetermined intervals in the rotation direction of the pawl mounting body 1, and one of the receiving holes 12, 12 at each of these two places is provided with a plough. Claw receivers 4 and 4 each of which is composed of a headed pin that abuts on one side of the claws 2 and 2 and receives the tilted posture of the tilling claws 2 and 2 are detachably attached.

In the embodiment shown in FIGS. 1 and 2, fitting cylinders 13, 13 for receiving the pawl receivers 4, 4 are attached to the respective receiving holes 12, 12 of the pawl mounting body 1, Each receiving hole 12, 1
The two parts are reinforced, and the pawl shaft cylinder 10 and the drive shaft 96 are provided.
And pin holes 10a and 96a are provided in
The coupling pin 5 that is removably inserted into the a and 96a enables the pawl mounting body 1 to rotate together with the drive shaft 96, and the fitting cylinders 13 and 13 and the pawl receiving bodies 4 and 4 have pin holes 13 respectively.
a and 4a are provided, and the split pins 6 that can be inserted into and removed from the pin holes 13a and 4a prevent the claw receivers 4 and 4 from coming off.

In the above structure, the claw mounting holes 11, 11
Each of the tilling claws 2, 2 mounted so as to be tiltable around the center of the tilling claws 4 and 4 is in contact with one side of the tilling claws 2 and 4, so that the tilting posture to the rear side in the rotation direction X is received. At this time, it is possible to prevent the plowing claws 2, 2 from inadvertently tilting. In addition, when changing the diameter D between the tip edges of the tilling claws 2 and 2 depending on the tilling work mode such as deep plowing and middle plowing,
By pulling out the split pins 6 from the pin holes 13a and 4a, pulling out the pawl receivers 4 and 4 from the receiving holes 12 and 12 and loosening the pawl mounting screws 3 and 3, etc. Can be tilted to the rear side in the rotation direction of the claw mounting body 1 about each of the claw mounting holes 11, 11.

In the tilted state of the tilling claws 2 and 2, the claw receiving members 4 and 4 are inserted into one of the receiving holes 12 and 12 at the two positions, and the claw receiving members 4 and 4 are inserted into the claw receiving members 4 and 4. By contacting one side of each plow claw 2,2, the tilted posture of each plow claw 2,2 can be received, and the diameter D between the tip edges of each plow claw 2,2 can be changed. You can do it. After this change, the claw mounting screws 3 and 3 are tightened, and the split pins 6 are inserted into the pin holes 13a and 4a, respectively.
To prevent their departure.

Further, the cultivating device is mainly mounted on a management machine having no tail wheel as shown in FIG.
In the case of the multiple type shown in (1), since the pawl shaft cylinder 10 becomes relatively long, the pawl shaft cylinder 10 is cultivated in a state of being in contact with the soil surface, and the plowing depth becomes stable.

In the embodiment shown in FIG. 2, the nut 30 is screwed onto the claw mounting screws 3 and 3 to mount the tilling claw 2 on the claw mounting body 1 in a tiltable manner. 1
1 may be used as a screw hole, and the claw mounting screws 3 and 3 may be tightened in the claw mounting holes 11 and 11, or the claw mounting screws 3 and 3 may be claws instead of the claw mounting holes 11 and 11. Mounting body 1
Alternatively, the tilling claws 2 and 2 may be mounted so as to be tiltable by tightening nuts screwed to the claw mounting screws 3 and 3.

In the embodiment shown in FIGS. 1 and 2, a plurality of receiving holes 12 and 12 are provided, and claw receiving members 4 and 4 made of pins are provided. In addition, as shown in FIG. 5, for example. Is provided with receiving holes 12, 12 made of arcuate elongated holes extending in the circumferential direction of the claw mounting body 1, and claw receiving bodies 4, 4 made of bolts are inserted into the claw receiving holes 12, 12, and The nuts 40, 40 may be tightened on the receiving members 4, 4, or, as shown in FIG. 6, in the receiving holes 12, 12 made of arc-shaped elongated holes extending in the circumferential direction of the pawl mounting body 1, A plurality of locking recesses 14, 14 which are recessed in the radial direction of the claw mounting body 1 are provided along the receiving holes, and the claw receiving bodies 4, 4 made of bolts inserted into the claw receiving holes 12, 12 are engaged with the engaging portions. The nuts 40, 40 may be tightened on the claw receivers 4, 4 while being locked by the stopper recesses 14, 14.

Although the claw receiving members 4 and 4 shown in FIGS. 1, 5 and 6 are formed by using pins and bolts, the other claw receiving members 4 and 4 are shown in FIG. As shown in FIG. 5, an annular boss portion 41 having a fitting hole that is provided at the center of the pawl mounting body 1 and is fitted around the outer periphery of the pawl shaft cylinder 10, and a boss portion 41 extending radially outward from the boss portion 41. A catching piece 42 having an abutting portion 42a, 42a that extends and abuts on one side of each of the tilling claws 2, 2.
42, and the space between the boss portion 41 and the claw shaft cylinder 10 facing each other is formed into a spline-shaped uneven strip or a polygonal shape, and the claw receivers 4 are inserted into and removed from the claw shaft cylinder 10. By doing so, the mounting positions of the claw receivers 4 and 4 may be changeable. In this case, the claw cylinder shaft 10 is projected toward both ends in the axial direction of the claw mounting body 1, and the claw receiving bodies 4 and 4 are attached to the outer circumferences of the projecting portions on both end sides so that the positions can be changed.

Incidentally, the management machine shown in FIG.
Since the lower part of the rotary case 97 will enter the soil, the lower part of the rotary case 97 will be
As shown in FIG. 0, the protective cover 7 curved in a substantially U-shape so as to cover the front surface, the lower surface and the rear surface of the rotary case 97,
The protective cover 7 is detachably attached so as to prevent the lower part of the rotary case 97 from being worn during cultivating work, while the lower part of the protective cover 7 has a residual crushed body 8 protruding downward. By projecting and crushing the residual tillage by this residual tillage crushing body 8 to improve the tillability, at the time of traveling in a relatively hard place of soil, the residual tillage crushing body 8 is brought into contact with the soil to control machine 9 I'm trying to prevent the dash. In addition, the protective cover 7 includes
Mounting pieces 71, 71 having mounting holes are provided in the front part and the rear part, and connecting bolts 98 for connecting the left and right plate parts 97a, 97b of the rotary case 97 are inserted into the mounting holes of these mounting pieces 71, 71. The rotary case 97
In the case where the rotary case 97 is of a welded structure type as shown in FIG. 11,
The mounting piece 7 is provided on the front and rear of the rotary case 97.
Mounting pieces 99, 99 are provided so as to face 1, 71, and the protective cover 7 is detachably attached to these mounting pieces 71, 99 as in the case shown in FIG.

[0018]

As described above, according to the first aspect of the present invention, by changing the mounting position of the claw receiving member 4, each plowing claw 2 is rotated in the rotation direction of the claw mounting member 1 about the claw mounting position. Since the tilting posture of each of these plowing pawls 2 can be received, the diameter D between the tip edges of the plowing pawls 2 can be adjusted by the same plowing pawl 2 without replacing the plowing pawl 2. The diameter D can be changed, and the diameter D can be easily changed by a simple operation of changing the mounting position of the claw receiver 4.

[Brief description of drawings]

FIG. 1 is a side view of a cultivating device according to the present invention.

FIG. 2 is an enlarged vertical sectional view of the tiller.

FIG. 3 is an explanatory view showing a state where the tiller is mounted on a management machine.

FIG. 4 is a partially enlarged explanatory view of a state in which it is mounted on the management machine.

FIG. 5 is a side view showing another embodiment of the tiller.

FIG. 6 is a side view showing another embodiment of the tiller.

FIG. 7 is a side view showing another embodiment of the tiller.

FIG. 8 is an explanatory view of a portion to which the cultivating device is attached.

9 is a side view in which a part of FIG. 8 is sectioned.

FIG. 10 is a perspective view of only a protective cover.

FIG. 11 is an explanatory view showing another example of the portion to which the tilling device is attached.

FIG. 12 is an explanatory diagram of a conventional example.

[Explanation of symbols]

 1 ... Claw mount 2 ... Cultivating claw 4 ... Claw receiver

Claims (1)

[Claims] 1. In a cultivating device in which a plurality of cultivating claws (2) are attached to a claw mounting body (1) that rotates together with a drive shaft (96), each cultivating claw (2) is centered at a claw mounting position. A claw receiving body that is mounted so as to be tiltable in the rotation direction of the claw mounting body (1) and that is in contact with each plowing claw (2) on the claw mounting body (1) to receive the tilted posture of each plowing claw (2). A cultivating device characterized in that (4) is mounted so that its position can be changed.