JPH0441765Y2 - - Google Patents

Description

[Detailed Description of the Invention] [Industrial Application Field] The present invention relates to a rotary tiller, and particularly to a rotary tiller in which a rotary tiller is provided on a rotary tiller main body so that the mounting angle can be freely adjusted around the vertical axis.

[Prior art]

As for the above-mentioned rotary tiller, the vertical power transmission pipe casing of the rotary tiller is attached to the holder part provided on the tiller body, and the vertical transmission pipe casing is installed 180 degrees around the axis of the rotary tiller.
There are some that are attached so that the position can be fixed and adjusted freely (for example, see JP-A-59-156202), or JP-A-59-71603.

[Problem that the invention attempts to solve]

In the above-mentioned conventional technology, the rotation direction of the rotary tilling shaft is simply changed between forward and reverse directions while the rotary tilling shaft is perpendicular to the direction of movement of the main body, and the types of work that can be performed are limited.

This idea aims to expand the work range by effectively utilizing the structure in which the pipe casing can change its angle around the vertical axis, and also makes it easy to change and fix the position of the pipe casing. Furthermore, the present invention is intended to enable quick and easy setting of any angle around the vertical axis of the rotary tiller.

[Means to solve the problem]

The characteristic configuration of the present invention for achieving the above object is that the holder portion is provided with a large number of engaging portions around the entire circumference, and the casing is provided with an adjustment lever that engages with the engaging portions. is provided so that the mounting angle of the rotary tilling device with respect to the main body can be adjusted as desired, and furthermore, on the upper surface of the rotary cover fixed to the tiller main body side, the adjustment lever corresponds to a predetermined angular posture operation position. The main feature is that a display section is provided, and its functions and effects are as follows.

[Effect]

The holder part on the main body side and the transmission pipe casing are connected by engaging the adjustment lever with the engaging part, so the rotary tiller shaft can be adjusted and fixed at any angle 360° in the direction of travel. .

[Effect of idea]

Therefore, the rotary tilling shaft can be adjusted to a desired angle with respect to the direction of movement of the main body, allowing not only normal forward tilling and reverse tilling, but also soil lifting diagonally backwards and diagonally forwards, and from the width of the rotary tilling device. It has become possible to perform a wide range of tasks such as small-scale plowing and trench digging. Furthermore, the pipe casing can be fixed at any angle by selectively engaging the engagement part of the adjustment lever, so the angle can be adjusted much more easily and quickly compared to tightening connections using bolts and nuts, and the handling is easier. Easy and highly practical. And like this,
If the adjustment lever is engaged with the engaging part so that the rotary tiller can be adjusted arbitrarily 360 degrees, it will be difficult to tell only intuitively how much the rotary tilling shaft is tilted with respect to the main body. On the other hand, since a display section is provided corresponding to the predetermined angle posture operation position of the adjustment lever in the normal forward tilling angle posture of rotary tilling equipment, the degree of inclination can be grasped quantitatively, and the angle setting can be done quickly. Easy to do.

〔Example〕

Fig. 6 shows the main body 1 of the rotary tiller, in which an engine 2 is mounted at the front, drives wheels 4 through a transmission chain case 3, and also drives a rotary tiller 5 installed at the rear. It is configured as follows. As shown in FIG. 1, the main body 1 is provided with a holder part 6, and the vertical transmission pipe casing 7 of the rotary tiller 5 is rotated 180 degrees around its axis. It can be installed freely. A large number of vertical circumferential grooves 8 are provided on the outer circumference of the holder portion 6 over the entire circumference. An adjustment lever 12 is attached to the pipe casing 7 so as to be swingable around a horizontal axis, and a spring 9
is provided so as to bias the lever 12 in the direction of engagement with the circumferential groove 8. The rotary tilling shaft 10 is driven via a transmission shaft in the holder part 6 and the transmission pipe casing 7, but the direction of rotation is always constant. The adjustment lever 12 is configured to be slightly longer, and the tilled soil scattering direction indicator displayed on the upper surface of the rotary cover 11 is fixed to the main body 1 with the pipe casing 7 relatively rotatably passing through it. 13a, 13b, 1
3c, 13d (see Figure 2).

8 to 5 show various rotary tilling work conditions, and FIG. 8 corresponds to FIG. 6, in which normal forward (or reverse) tilling is performed, and FIG.
Furrows are formed by digging trenches and mounding soil on the right or left side, and in Figure 5, soil is lifted between the furrows and weeding is carried out during plowing with a width smaller than the full width of the tilling device.

These working conditions can be adjusted in a 360-degree range by engaging the vertical circumferential groove 8 and the adjustment lever 12, making it easy to select the tilled soil scattering direction and change the actual tilling width according to various types of work. can be done.

Incidentally, instead of the vertical circumferential groove 8, a large number of circular engagement holes may be formed, and the adjustment lever 12 may be provided with an engagement pin for engaging the engagement hole. In addition to arranging engagement pins in parallel in the circumferential direction,
The adjustment lever 12 may be provided with one locking hole into which an engagement pin is inserted, and the vertical circumferential groove, the engagement hole, or the engagement pin formed along the circumferential direction are collectively referred to as an engagement portion. .

[Brief explanation of the drawing]

The drawings show an embodiment of the rotary tiller according to the present invention, and FIG. 1 is a longitudinal cross-sectional side view of the main part, and FIG.
Fig. 3 is a working state diagram with the rotary tilling shaft positioned perpendicular to the direction of travel;
Fig. 4 is a working state diagram in which the rotary tilling shaft is positioned parallel to the traveling direction, and Fig. 5 is a working state diagram in which the rotary tilling shaft is tilted at 45 degrees in the traveling direction. FIG. 6 is a side view of the whole. 1...Main body, 5...Rotary tilling device, 6...
Holder part, 7...Casing, 8...Engagement part,
12...adjustment lever, 13a...display section.

Claims (1)

[Scope of claims for utility model registration] (1) In the holder part 6 provided on the cultivator main body 1,
In a rotary tiller in which a vertical power transmission casing 7 of a rotary tiller 5 is rotatably fixed and adjustable around its vertical axis, the holder part 6 has a large number of engaging parts 8 around the vertical axis. ……
is provided over the entire circumference, and an adjustment lever 12 that engages with the engaging portion 8 is provided on the casing 7, so that the mounting angle of the rotary tilling device 5 with respect to the main body 1 can be arbitrarily adjusted, and further, Display portions 13a, 13b, 13 are provided on the upper surface of the rotary cover 11 fixed to the cultivator main body 1 side, corresponding to the predetermined angular posture operation position of the adjustment lever 12.
A rotary tiller characterized by being provided with c and 13d. (2) The rotary tiller according to claim 1, wherein the engaging portion 8 is a vertical circumferential groove formed on the outer periphery of the holder portion 6.