JPS61285902A - Apparatus for adjusting angle of rotary plow pawl shaft - Google Patents

Abstract

(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

[Detailed description of the invention] (a) Industrial application field The present invention is attached to the rear of an agricultural tractor, etc.
This relates to an angle adjustment device for the tiller claw shaft of a rotary tillage device that performs soil crushing, ridge-making, etc. (Example) Conventional technology Conventional rotary tillage devices are capable of adjusting the angle of the tilling claw shaft of a rotary tillage device that performs soil crushing, ridge-making, etc. The different uses were made by changing the type or arrangement of the tilling claws installed on the tilling claw shaft, but changing the attachment of the tilling claw shaft was a tedious task, and errors in the arrangement caused problems. However, in some cases, the desired work could not be completed, so it was rarely done.

The present invention does not change the direction of soil splashing by changing the attachment of tilling claws as in the past, but instead changes the angle of the tilling claw axis back and forth to the left and right while leaving the tilling claws planted. This makes it possible to create various working conditions by changing the direction in which the soil is thrown out.

Furthermore, in the past, there has been a technique in which the tilling claw shaft is made to have an angle with respect to the tilling drive case 1. For example, there is a technique described in Japanese Unexamined Patent Publication No. 56-81729. However, this technique and the present invention have different purposes and configurations.

(c) Problems to be Solved by the Invention The purpose of the present invention is to solve the problems of the conventional technology, and to easily raise and ridge the ridges without having to replace the planted tilling claws. It is possible to switch between breaking, groove raising, rough raising, etc.

(d) Means for Solving the Problems The objects of the present invention are as described above. Next, the structure for achieving the objects will be explained.

In a center drive type rotary tiller,
The angle of the left and right tilling claw shafts can be changed back and forth independently of each other around the central tilling drive case.

In addition, side supports are fixed to the outer ends of the left and right tiller claw shafts, and after the angle of the tiller claw shafts is adjusted, the side supports are fixed to the fixing brackets provided at the outer ends of the main beam.

In addition, the tilling claw shaft and main beam are integrated,
It can be fixed and rotated back and forth with respect to the tilling drive case.

(e) Embodiments and Functions The objects and structure of the present invention are as described above. Next, the structure of the embodiments shown in the attached drawings and the invention will be explained in detail.

FIG. 1 is an overall side view of a rotary tiller according to the present invention, FIG. 2 is a front sectional view thereof, and FIG. 3 is a plan sectional view of a tilling claw shaft portion.

In FIG. 1, power is transmitted to the input shaft 21 of the tilling drive case 1 by the universal joint shaft 33.

The rotary tiller is supported and attached to the agricultural tractor by a top link on a top link mast 34 and by two lower links at the bottom. 36 is a depth wheel device, and 35 is a depth control handle.

The tilling covers 3L and 3R of the present invention are configured in a planar shape, and are configured so that even if the tilling claw shafts 4L and 4R and the tilling claws 8L and 8R rotate back and forth, they do not come into contact with the tilling covers 3L and 3R. are doing.

Rear cover 1 attached to the rear of tillage covers 3L and 3R
1L and IIR are also separated so that they can be rotated to the left and right.

In the embodiments shown in Figures 2 and 3, the main beam 2L
・2R is fixed to the tilling drive case 1 and does not rotate. On the other hand, the tilling claw shafts 4L and 4R are made rotatable relative to the tilling drive case 1. The upper part of the tilling drive case 1 is configured as a bevel gear box, and the rotation direction of the input shaft 21 is changed. First, the rotation direction is changed by the bevel gears 19 and 20, and the rotation is transmitted to the shaft 18, and then the rotation is transmitted to the shaft 37 by the gears 17 and 16, and from the sprocket 15 to the shaft 12 at the lower end of the tillage drive case 1
The power is transmitted to sprocket 13 of.

The power of the shaft 12 is transmitted to the tilling claw shafts 4L, 4R by left and right cross joints 6L, 6R so as to be rotatable in the axial direction. Further, the tilling claw shafts 4L and 4R are rotatably supported by slide bearing devices 7L and 7R. By supporting the tilling claw shafts 4L and 4R by the cross joints 6L and 6R and the slide bearing devices 7L and 7R in this way, the tilling claw shafts 4L and 4R can be rotated back and forth, and even in the rotating state, the power is not lost. The transmission of information is carried out as before.

The tilling claw shafts 4L and 4R are fixed in their rotational positions by side supports 9L and 9 fixed to the outer ends of the tilling claw shafts 4L and 4R.
R and fixed brackets 22L and 22R fixed to the outer ends of the main beams 2L and 2R. Side support 9L/9
R is the bearing at the outer end of the tilling claw shaft 4L/4R is the device 38L/3
It is fixed via 8R, and the bearings are connected to devices 38L and 38.
It also serves as support for H. And tilling claw shaft 4L.
At the position where 4R is rotated back and forth, fix the fixed bracket 22L.
The side supports 9L and 9R are fixed to the fixing holes provided in 22R.

In this embodiment, the side covers 1OL and IOR are provided separately. The conventional side covers 1OL and IOR were directly fixed to the main beams 2L and 2R,
In this embodiment, the side supports 9L and 9R are rotatably fixed to the outer ends of the main beams 2L and 2R, so the side covers 10L and I are attached to the main beams 2L and 2R.
Unable to fix OR, side cover 1OL/1
0R is fixed to the outer ends of the tilling covers 3L and 3R. .

Fig. 4 is a plan view of the main beam part in normal planar tillage for roughing and crushing soil, etc. Fig. 5 is a plan view of the tilling claw shaft part, Fig. 6 is a rear sectional view of tilled soil, and Fig. 7 The figure is a plan view of the main beam part in the case of ridge breaking tillage, Figure 8 is a plan view of the tilling claw shaft part, Figure 9 is a cross-sectional view of the soil in the case of ridge breaking kasuri, and Figure 10 is the ridge raising kasuri. FIG. 11 is a plan view of the main beam portion in the same case, FIG. 11 is a plan view of the tilling claw shaft portion, and FIG. 12 is a rear sectional view of the soil during ridge plowing.

This will be explained with reference to FIGS. 4, 5, and 6.

In this case, the tilling claw shafts 4L and 4R and the main beam 2L
- The relative position of 2R is the same as that of a normal rotary tiller, and it is placed at right angles to the direction of travel of the tractor. Therefore, even in the cross-sectional view of the soil after tilling, a uniform cross-section of the soil A is obtained as in the conventional case.

Next, the case of ridge-broken Kasuri will be explained based on the drawings of FIGS. 7, 8, and 9.

In the case of the ridge breaking tillage, the tilling claw shafts 4L and 4R are respectively rotated forward from the positions of the main beams 2L and 2R. As a result, due to the rotation of the tilling claws 8L and 8R, the soil in the center tends to be thrown outward, and the ridge B formed in the center is broken down and becomes flat.

Next, the case of ridge plowing shown in Figs. 10, 11, and 12 will be explained.

In this case, the tilling claw shafts 4L and 4R are rotated rearward with respect to the main beams 2L and 2R. In this way, by setting the tilling claws 8L and 8R at an angle, the soil on the sides tends to be gathered toward the center, creating a ridge C in the center.

Figure 13 is a plan view of the main beam section showing the state of furrow raising on the right side, and Figure 14 is a plan view of the tilling claw shaft section.
Figure 5 is a cross-sectional view of the soil showing the condition of furrowing.

The soil near the ridge gradually builds up in the area close to the ridge, forming D. To solve this problem, furrowing E is used to gather the soil only at the edge of the ridge. In this case, the soil on the right side is Only the tilling claw shaft 4R is rotated rearward.

When rotating the tilling claw shaft back and forth as shown in Figures 7 to 15, after rotation, fix the side supports 9L and 9R to the fixing brackets 22L and 22R with bolts, and then rotate the tilling claw shafts 4L and 4R. It maintains the rotating state.

Fig. 16 is a plan view of the embodiment in which the main beam is rotatable together with the tilling claw shaft, Fig. 17 is a rear view of the same, Fig. 18 is a plan view of the state in which only the left side is rotated and the furrow is raised; 19
The figure is a plan view of the rice cake in a ridged state.

In the case of this embodiment, the pivot shafts 30 for the main beams 2L and 2R are provided in the center of the tillage drive case 1, and the pivot brackets 31L and 31 protrude from the main beams 2L and 2R.
It pivots the tip of R.

Along with the main beams 2L and 2R, the tilling claw shafts 4L and
It is screw rods 26L and 26R that rotate 4R back and forth and fix them in the rotated position. 29 is the screw rod 26L
・It is a knob for rotating 26R. Further, in the case of this embodiment, side covers 27L27R are fixed to the tips of the main beams 2L and 2R and rotate together. Further, the tilling covers 3L, 3R and rear covers 11L, IIR shown in FIG. 1 are also rotatably supported together with the main beams 2L, 2R.

(F) Effects of the Invention Since the present invention is constructed as described above, it has the following effects.

First, unlike conventional rotary tillers, there is no need to change the attachment of the tiller claws when the working conditions such as ridge raising, ridge breaking, furrow raising, rough raising, etc. change; Since it is only necessary to adjust the rotation back and forth and then fix it in the rotation position, the setup time for changing operations can be shortened.

Second, when used as a rotary tiller for field farming, by rotating the tiller claw shaft, the position of the end of the tiller claw shaft can be changed, and this device can also be used to change the working width. can be used.

[Brief explanation of drawings]

Fig. 1 is an overall side view of the rotary tillage device of the present invention, Fig. 2 is a front sectional view, Fig. 3 is a plan sectional view of the tilling claw shaft portion, and Fig. 4 is for carrying out normal roughing, crushing, etc. A plan view of the main beam part in plane tilling, Fig. 5 is a plan view of the tilling claw shaft part, and Fig. 6 is a rear sectional view of tilled soil.
Figure 7 is a plan view of the main beam part in the case of ridge breaking plowing.
Figure 8 is a plan view of the tilling claw shaft portion, Figure 9 is a cross-sectional view of the soil in the case of ridge-breaking tillage, Figure 10 is a plan view of the main beam part in the case of ridge-raising tillage, and Figure 11 is the same. A plan view of the tilling claw shaft portion, Fig. 12 is a rear sectional view of the soil in the ridge-raised kasuri, Fig. 13 is a plan view of the main beam section showing the state of furrowing on the right side, and Fig. 14 is the same as the tilling claw shaft. Fig. 15 is a cross-sectional view of the soil showing the state of trench raising, Fig. 1
Figure 6 is a plan view of an embodiment in which the main beam is rotatable together with the tilling claw shaft, Figure 17 is a rear view, and Figure 18 is a rear view.
The figure is a plan view of a state in which only the left side is rotated and the grooves are raised, and FIG. 19 is a plan view of the state in which the mochi is raised. l...Tilling drive case 2L/2R...Main beam 3L/3R...Tilling cover 4L/4R...Tilling claw shaft 8L/8R...Tilling claw 9L/9R...Side support 22L/22R ...Fixed bracket applicant Yanmar Diesel Co., Ltd. agent Patent attorney Toshikazu Yano Figure 4 Figure 5 Figure 6 Figure 7 Figure 9 Figure 70 Figure 72 Figure 13 Figure 74 Figure 75

Claims (3)

[Claims] (1) In a center drive type rotary tilling device, the angle of the rotary tilling claw shaft is characterized in that the angle of the left and right tilling claw shafts can be changed back and forth independently of each other around the central tilling drive case. Regulator. (2) A side support is fixed to the outer ends of the left and right tilling claw shafts according to claim 1, and after adjusting the angle of the tilling claw shafts, the side supports are attached to a fixing bracket provided at the outer end of the main beam. An angle adjustment device for a rotary tiller claw shaft, characterized in that it is configured to be fixed. (3) A rotary tilling claw characterized in that the tilling claw shaft and the main beam according to claim 1 are integrally configured so that the tilling claw shaft can be rotated and fixed back and forth with respect to the tilling drive case. Axis angle adjustment device.