JPS605761Y2 - Tractor side drive tillage rotary - Google Patents

Description

[Detailed Description of the Invention] This invention relates to a side drive rotary for a tractor.

Recently, improving the soil fertility of fields has been reconsidered and given importance, and for this reason, there is a tendency to plow deeply when plowing fields.

However, even with the side drive rotary tiller used for deep tilling, the lower end of the drive case is
Since it restricts the amount of soil that can be penetrated beyond a certain level, it is actually not possible to plow very deeply.

Therefore, in order to make the depth even deeper, it is possible to replace the rotary shaft with tilling claws with a larger rotation diameter, but this would require proper maintenance of the gap between the tilling cover and the tilling claws, and reduce the required power. This is practically impossible because problems occur in various points such as increase in the number of drive shafts and changes in the bending angle of the drive shaft when the device is moved up and down.

The present invention has been implemented with these points in mind, and allows a deep rotary tilling shaft with an extended drive case to be installed in the drive case of a rotary tilling device in place of a normal rotary tilling shaft. The tilling width of this deep rotary tilling shaft is made smaller than that of the normal rotary tilling shaft, and the rotation diameter of the tilling claws of the deep tilling rotary is made larger than that of the normal rotary tilling shaft. By configuring the machine so that the gap between the tilling claw and the tilling cover is almost the same even when the tiller is installed, the required power, the bending angle of the drive shaft, and the gap between the tilling claw and the cover can all be maintained at an appropriate level.
This is an embodiment of a rotary tiller that can plow to extremely deep plowing depths.

This will be explained in detail below using specific examples shown in the drawings.

A side drive case 4 and a holder 5 are attached to the ends of the left and right extending arms 2 and 3 of the tilling passive case 1, and a transmission mechanism connected to the drive shaft 6 is accommodated in the passive case 1. A drive mechanism interlocked with the drive case 4 is housed in the arm part 2 and the drive case 4, and an output shaft 7 protruding outside the drive case 4 is interlocked and installed at the end of the drive mechanism.

The output shaft 7 has a connecting portion 8 to which a connecting portion 10 at one end of the rotary tilling shaft 9 is detachably connected, and the other end of the rotary tilling shaft 9 is connected to a bracket 11. By rotatably and removably supporting the lower end attachment portion 12 of the holder 5 described above via the rotary tilling shaft, the rotary tilling shaft is horizontally supported in a drivable state.

The rotary tilling shaft 9 has claw brackets 13 arranged radially around its outer periphery, and tilling claws 14 with a rotation radius r are attached to these, so that the tilling width is L. It is formed to become.

The upper portion of the tilling claw 14 outside of rotation is covered with a tilling cover 15 installed with an appropriate gap maintained.

Furthermore, when the rotary tilling shaft 9 is removed, as shown in FIG. An extension drive case 17 is attached to one end of this deep rotary tilling shaft 16.

The drive case 17 is provided with an input shaft 18 that can be connected to the connecting portion 8, and accommodates a transmission mechanism that interlocks and connects a deep rotary tilling shaft 16 supported on the side land that is offset with respect to the input shaft 18. are doing.

The other end of the deep rotary tillage shaft 16 is supported by the lower end attachment portion 12 of the holder 5 by the deep rotary tiller holding bracket 19.
A claw bracket 20 is provided on the outer periphery of the tiller 6, and a tilling claw 21 having a rotation radius R larger than the rotation radius r of the tilling claw 14 is attached to each claw bracket. The tilling width of each group is made to be a tilling width 1 which is suitably intermediate than the tilling width of the rotary tilling shaft 9 described above, and the tilling width located on the outer circumference of the rotation of the tilling claws 21... The gap between the cover 15 and the above-mentioned tilling claws 14 is made to be approximately the same as the gap when installed.

The tilling rotary with the above configuration is passive case 1,
The frame portion formed by the drive case 4, holder 5, etc. is connected to the tractor body by known three-point hitches 22, 23, 24 so as to be able to rise and fall freely, and the depth frame 25 is extended to the rear. A depth adjustment gauge wheel 26 is installed thereon, and the position can be finely adjusted by operating a depth screw mechanism 27 installed in relation to the frame 25.

The reference numeral 28 in the figure is a fixing mechanism when the extension drive case 17 is attached, and is formed into a long stay with one end connected to the roadside side of the extension drive case and the other end connected to the tilling cover side. , h and H indicate the maximum plowing depth by the rotary tilling shaft 9 and the deep rotary tilling shaft 16.

Next, to explain the operation of the present invention, normally the rotary tilling shaft 9 is attached as shown in Fig. 2. It can be done.

Next, when it is necessary to deeply till the field, the rotary tillage shaft 9 is removed and a deep rotary tillage shaft 16 is installed in its place.
The power transmitted to the output shaft 7 via the mechanism in the side drive case 4 is further transmitted to the deep plowing rotary shaft 16 by the transmission mechanism in the extension drive case 17 to rotate the shaft.

Therefore, the tilling claws 21 are driven into the soil while operating with the rotation radius R, and the range of tilling width 1 can be deeply tilled within the range of maximum depth H.

As explained above, in the present invention, the rotary tilling shaft 9 is removably horizontally supported between the side drive case 4 and the holder 5, and a predetermined gap is provided between the rotating outer side of the tilling claw of the coaxial shaft 9. A drive case 17 is provided between the side drive case 4 and the holder 5 to have a tillage width l narrower than that of the rotary tillage shaft 9 and extended at one end. In a side drive type tilling rotary configured so that a deep tilling rotary tilling shaft 16 having a rotary tilling shaft 16 can be replaced and installed, the tilling pawl on the deep tilling rotary tilling shaft 16 has its rotational diameter R equal to the tilling pawl rotational diameter r of the rotary tilling shaft. The side drive case 4 side of the deep tillage rotary tillage shaft 16 is made larger so that the gap between the rotational outer diameter and the tillage cover 15 is maintained approximately the same as the predetermined gap in the rotary tillage shaft 9. The input shaft 18 protruding from the extension drive case 17 is directly fixed and connected to the output shaft 7 protruding in an exposed state from the drive case 4, and the extension drive case 17 has the other end of the long stay 28 connected to its free end. Since it is attached to the tilling cover side and fixed in place, deep tilling can be achieved with the simple operation of replacing and attaching the rotary tilling shaft.

In addition, even though a large-diameter tiller is used for deep tilling, the required power, the bending angle of the drive shaft, and the gap between the tiller and tiller cover can all be properly maintained, allowing for deep tilling. I can wake up easily and smoothly.

Moreover, since these proper retentions are necessarily achieved by installing the deep rotary tiller shaft, there is no need for any adjustment and handling is particularly easy when changing or using the deep rotary tiller with the extension drive case 17. axis 1
6, the output shaft 7 on the side drive case side and the input shaft 18 on the extension drive case side can be directly connected in an externally exposed state, so the shafts can be connected in the inner space of the connection where the cases are connected. Compared to the conventional structure, the connection work is much easier to perform, and there is no need to worry about lubricating oil leaking from both cases, making replacement and removal work more convenient, and the extension drive case 17 can be easily fixed with the stay. Can be done firmly and robustly.

[Brief explanation of the drawing]

The drawings show specific examples of the present invention. Figure 1 is a side view of the side-drive tilling rotary according to the present invention, Figure 2 is a schematic plan view showing the rotary tiller equipped with a normal rotary tillage shaft, and Figure 3 is a deep tillage rotary. FIG. 2 is a schematic plan view showing a state in which a rotary tilling shaft is installed. 1... Passive case, 4... Side drive case, 5... Holder, 6... Drive shaft, 7... Output shaft , 9...
・Rotary tillage shaft, 14...Tilling claw, 16
・・・・・・Deep rotary tillage shaft, 17・・・・・・
Extension drive case, 18...Input shaft, 21.
...Tilling claw, L, l...Tilling width, R
, r...Rotation radius of the tiller claws.

Claims (1)

[Scope of utility model registration request] A rotary tilling shaft 9 is removably horizontally supported between the side drive case 4 and the holder 5, and a tilling cover 15 is installed so that a predetermined gap is maintained between the rotating outer side of the tilling claw of the coaxial shaft 9.
A deep rotary tilling shaft 16 is provided between the side drive case 4 and the holder 5 and has a tilling width l narrower than that of the rotary tilling shaft 9 and has an extended drive case 17 at one end. In the side drive type tilling rotary configured to be able to be replaced and installed, the tilling claws on the deep rotary tilling shaft 16 have a rotational diameter R larger than the tilling claw rotational diameter r of the rotary tilling shaft, and the outer diameter of the tilling claws is The gap between the rotary tilling shaft 16 and the tilling cover 15 is maintained substantially the same as the predetermined gap in the rotary tilling shaft 9, and the deep tilling rotary tilling shaft 16 is
On the side drive case 4 side, an input shaft 18 protruding from an extension drive case 17 is directly fixed and connected to an output side 7 protruding in an exposed state from the side drive case 4.
This side drive tilling rotary is characterized in that the extension drive case 17 is fixed at a predetermined position by attaching the other end of a long stay 28 connected to the free end side to the tilling cover side.