JPS60105402A - Rotary plough - 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 The present invention relates to an improvement of a relatively small-sized rotary tiller having claw shafts protruding from the left and right sides of the lower end of a rotary case.

In general, rotary tilling devices with the configuration shown in T are used by being attached to the traveling machine body, and each ridge tilling claw or rotary type attachment is attached to the left and right claw shafts to perform various rotary works. When releasing soil to the side, such as raising soil or digging trenches, by rotating the attachment attached to the nail shaft facing the picking direction,
9111 The function of scattering soil in the direction was sufficient, especially in a straw tiller with a relatively small output.

By improving the transmission structure of the rotary case and the pawl shaft, the present invention is a versatile machine that can efficiently perform not only normal tillage work but also work that requires sideways splashing of soil. The purpose is to provide a high rotary tillage device.

A feature of the present invention is that a rotary case with left and right claw shafts protruding from the lower end is constructed so as to be freely adjustable to move 90 degrees (and upwards) around the vertical axis, so that both claw shafts are oriented in the front-rear direction. In addition, it is provided with a rotational direction switching mechanism for switching between a state in which both claw shafts are rotationally driven in the same direction and a state in which they are rotationally driven in mutually opposite directions. That's right.

In other words, for soil work, the rotary case should be held at 90°.
By directing the axis of rotation of the rotating claw shaft toward the mJ rearward direction of the aircraft, the dirt is thrown up in the direction of rotation of the claw, resulting in high efficiency, and even with a low-output engine, a strong scattering force can be obtained. This makes it possible to handle wide areas, and in this case, by reversing the rotation direction of the front and rear claws,
The ridges can be scratched simultaneously in the left and right directions of the aircraft, and the reaction forces of the front and rear claws are canceled out, which prevents the aircraft from meandering and improves maneuverability.

In addition, by rotating the rotary case 180 degrees around the vertical axis and orienting the axis of rotation of the claw shaft in the lateral direction of the aircraft, it is possible to easily switch between so-called down-cut and up-cut, making it possible to almost completely replace the conventional transmission structure. I was able to make it usable as is.

It also became possible to perform tasks such as digging trenches.

In short, by changing the orientation of the rotary case and switching the drive of the pawl shaft, we have been able to construct a highly versatile rotary M-transfer device that can perform various types of work in an appropriate quick-action mode corresponding to each task.

Next, embodiments of the present invention will be explained based on the drawings.

Figure 1 shows the overall side view of a management machine equipped with a rotary tillage device according to the present invention.
, transmission case (2) at the rear of this transmission case (2)
The chain cases (3) are connected to the right side of the transmission case (2), and the rotary case (4) of the rotary tiller is connected to the back of the transmission case (2).

In addition, a pair of left and right handle rods (
Attach the starting end of 5), install it at the bottom of the chain case (3) with the seven propulsion wheels (6) inserted below the engine fi+ and transmission case (2), and install the /- walking management machine. It consists of:

As shown in Figures 2 and 8, the rotary case (4)
is the upper case part (
4a) and a rotating case part (4h) that is rotatable around the vertical axis (P) relative to this, and a vib-like frame (formed at the top part of +s2) belonging to the rotating case part (4b). flange part (12a) ヲh part case part (
By pressing the bottom of 4a) and the ring-shaped member (country),
The surrounding case part (4b) is fixed to the upper gouge 7 part (4a), which is identified by a ring-shaped member (114) that passes through the ring-shaped member (131 and screws into the upper case part (4a)).
・It is done by tightening the.

In the evening, by loosening the port (14), the rotating case part (4b) becomes rotatable around the axis (Pi), and can be rotated manually.

As shown in the same figure, the claw shaft (8
1, +9+ in detail, the driving force from the transmission case (2) is transmitted to the drive shaft (15) that vertically passes through the vibrator-like frame (12), and is spline-connected to the lower end of the drive shaft. In addition, at the bottom of the rotary case (4) there are claw shafts +8 in the left and right directions respectively in the same figure), +91 is the bearing 11η,
t+71, and each claw shaft (81,
(91 is a common short rod (1→
It is fitted inside so that it can rotate freely. In addition, an input bevel gear (1 lamp) is rotatably fitted to the claw 1141+fsl on the left side (c7), and an input bevel gear is spline-connected to the right claw shaft (9). The bevel gears (+9) and t'14 are assembled to transmitably mesh with the output bevel gear (16).Furthermore, the respective claw shafts i81 and +91 are provided with clutch sleeves f21+ as rotational direction switching mechanisms. A spline part (8a) with sliding ability and transmission ability, (
9a).

Clutch sleeve CI shown in the same figure! The position II is when the left and right pawl shafts f81, +9) are driven and rotated in the same direction, and the transmission at this time is to drive the right input bevel gear that meshes with the output bevel gear (1 hool).
It is transmitted to the right nail l1111+9+, and then the left and right) nail l
By driving the left pawl shaft (8) through the clutch sleeve 121+ at the position where ll1+ (sl, (91) is connected, both pawl shafts +81 and +91 are driven and rotated in the same direction. There is.

In addition, the bevel gear on the left side of the figure is formed with an engaging claw (19a) that can engage with the engaging claw (21, a) of the clutch sleeve (211), and in the same figure, the left side of the clutch sleeve 12]1 is formed. However, by sliding the clutch sleeve I211 to the left, the left and right pawl shafts (81, +91) are disconnected from each other, and the left and right pawl shafts (81, tit) are disengaged. are driven to rotate in opposite directions.

Further, the clutch sleeve 1211 is operated manually, and is operatively connected to a swinging lever (7) attached to the outside of the lower end of the rotating booth portion (4b), as shown in FIGS. 1 and 2. , is operated by this.

FIGS. 4 to 7 schematically show a plan view of the working mode that can be performed by adjusting the rotation of the rotary case (4).

The one in Figure 4 is the form used for normal tillage work, with the claw shafts f81 and +9+ set in the left and right directions of the machine, and the width of the plowing (W) determined by the tilling shafts attached to the claw shafts (8+ and +91). Determined by the nail (+o), (II).
In addition, this form corresponds in plan view to what is called a switch from a down cut to an up cut by rotating the rotary case (4) /00 times.

The one shown in Fig. 5 is mainly used for trench digging and earth raising work, and the claw shafts (81, +9+ are set toward the front and rear directions of the machine. In this case, the front and rear claws, @
A band-shaped one is used to increase the success rate of the above-mentioned flip-up.

In addition, the front and rear claw shafts (81, +9+) are driven and rotated in opposite directions by the switching function described above, thereby canceling out the digging reaction force received from the front and rear claws +8+, +91, improving the steering performance, and improving the aircraft's performance. The soil is thrown away in the left and right direction.Furthermore, on the front and rear claw surfaces, the diameter (a) of the front claw is set smaller than the diameter (Dl) of the rear claw, and the soil is spread evenly on the left and right sides. It is designed to bounce away.

The form shown in Figure 6 is used for plowing, trench digging, etc., and is not limited to specific work.
It is used to obtain the required tillage (W') without replacing the tilling claws (Do) and fnl, and the rotary case (4
) by setting the rotation angle according to the purpose of the work, it can be used in a variety of tasks. Note that the arrows shown in FIGS. 4 to 6 indicate the traveling direction of the aircraft.

FIG. 4 shows another embodiment. In this example, the manual clutch lever (7) is replaced with a rotor. That is, a swinging member corresponding to the lever (7) is pivotally supported in the case at the lower part of the rotating case portion (4b), and is supported by a spring G on each claw shaft (Ill.
, (91 is biased in the direction to be driven in the same direction. Also, there is a swinging member. In addition, the guide member +241 has nine rods (91) extending upward on the pipe frame (I2). C) is welded, and the upper end is configured to come into contact with a cam surface (9) provided protruding from the ring-shaped member (9), and this cam surface (support) is The movable part (4b) is arranged in two positions symmetrically with respect to the axis (Pl) so that it operates when the moving part (4b) rotates by 00 and the claw shaft (81, +91 faces the front and back of the aircraft). When the cam surface base comes into contact with the upper end of the rod (C), the rod (C) moves downward toward the left and right claw shafts f.
8+, (91 are driven and rotated in opposite directions.

[Brief explanation of drawings]

The drawings show examples of the rotary tilling device according to the present invention, and FIG. 1 shows a walk-behind cultivator to which the rotary tilling device of the present invention is attached, FIG. 2 shows a rear view of the rotary tilling device, and FIG. 8 shows a rotary case. FIGS. 4 to 6 are schematic plan views of working configurations, and FIG. 7 is another embodiment of the clutch switching section. (4)...Rotary case, (8)...
・Claw shaft, (9)...Claw shaft,)...Switching mechanism. Agent Patent Attorney Osamu Kitamura

Claims (1)

[Claims] A rotary case (4) having left and right claw shafts (81, (91) protruding from the lower end thereof is configured to be able to freely move upwardly by 9001'J around the vertical axis (Pi), so that the above-mentioned claw shafts f81, +91 are In addition to being configured so that it can be used in a posture facing forward and backward,
f3i A rotary cultivating device which is provided with a rotational direction switching mechanism 1211 for switching the two claw shafts (8) and f9+ between a state in which both the claw shafts (8) and f9+ are driven to rotate in the same direction and a state in which they are driven to rotate in opposite directions.