JP2003235303A - Rotary tiller of tractor or the like - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To solve problems in which straw, weeds, etc., twine around tilling pipe, etc., and straw and weeds are pushed, because the tilling pipe is reversely rotated to the advancing direction. <P>SOLUTION: In the rotary tiller, left and right rotating plates 9a and 9b rotating to enable free positive rotation in the advancing direction is installed on the inside of left and right side plate covers 15a and 15b of a rotary cover device 15 in the outer periphery of left and right support metals 7a and 7b rotatably supporting the shaft of a tilling pipe 4 to enable free reverse rotation in the advancing direction. These left and right rotation plate 9a and 9b are preferably installed in left and right both ends of the tilling pipe 4. A standing wall plate device 10 is installed in front of left and right rotating plates 9a and 9b. <P>COPYRIGHT: (C)2003,JPO

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an outer peripheral portion of a left / right supporting metal that pivotally supports a tilling pipe equipped with a tilling claw so as to be reversely rotatable in a traveling direction, and an inside of a left / right side plate cover of a rotary cover device. Is a technology in which left and right rotating plates that rotate in the forward direction so as to rotate in the normal direction are provided, and can be used as a rotary tiller mounted on the rear part of the tractor.

[0002]

2. Description of the Related Art A tilling work in a field is carried out by a rotary tiller mounted on a rear portion of a tractor, and the rotary tiller is installed inside a rotary cover device provided between a gear case provided on both left and right sides and a support case. Then, the tillage claws attached to the plurality of claw holders fixed to the tillage pipe rotatably supported by the left and right support metals attached to the gear case and the support case rotate backward in the traveling direction, and the tiller claws rotate. At the same time, the left and right rotating plates provided on both left and right sides of the tilling pipe cut straw and weeds, and cultivate while preventing winding.

[0003]

Each of the tilling claws of the rotary tiller is an ultra-fine soil type which is rotated in the reverse direction in the traveling direction, and therefore straws and weeds may be pushed, or
The left and right rotating plates for cutting straw and weeds are attached to the cultivating pipe, so that the cultivating pipe and the left
Straws, weeds, etc. were sometimes wrapped around the right rotary plate, and the present invention is intended to solve these problems.

[0004]

To this end, according to the invention of claim 1, the present invention allows the tilling pipe 4 equipped with a plurality of tilling claws 8b for tilling a field to be reversely rotatable in the traveling direction. Left and right support metals 7a and 7b that support the shaft,
In the tractor provided with the rotary cover device 15 and the like having the cultivating pipe 4 installed therein, the traveling direction is provided inside the left and right side plate covers 15a and 15b of the rotary cover device 15 at the outer peripheral portions of the left and right support metals 7a and 7b. A rotary tiller for a tractor or the like characterized in that a rotary tiller for a tractor or the like is provided by axially supporting left and right rotating plates 9a, 9b that rotate in a positively rotatable manner Is.

[0005] When cultivating a field with a rotary tiller mounted on the rear part of the tractor, this rotary tiller is mounted inside a rotary cover device 15 provided between a gear case provided on both left and right sides and a support case. , Left and right support metal 7 attached to these gear cases and support cases
The tilling claws 8b attached to a plurality of claw holders fixed to the tilling pipe 4 rotatably supported by a and 7b rotate backward in the traveling direction to cultivate, and the left and right support metals 7a and 7b.
At the outer peripheral portion of b, straws and weeds are cut by the left and right rotary plates 9a and 9b provided to rotate inwardly in the left and right side plate covers 15a and 15b of the rotary cover device 15 so as to rotate in the forward direction. The cultivating pipe 4 and the left and right rotating plates 9a,
Cultivate while preventing straws and weeds from wrapping around 9b.

According to a second aspect of the present invention, the left and right rotary plates 9a, 9b are provided at both left and right ends of the tilling pipe 4, respectively. It is what The rotary tiller is provided between the gear cases provided on both the left and right sides and the support case, and inside the rotary cover device 15 provided inside, the left and right support metals 7a mounted on the gear cases and the support case, The cultivating claws 8b attached to the plurality of claw holders fixed to the cultivating pipe 4 rotatably supported by 7b rotate backward in the traveling direction to cultivate the field and also the outer circumferences of the left and right support metals 7a, 7b. Rotary cover device 15
Straws, weeds, etc. are cut by the left and right rotary plates 9a, 9b rotatably provided to the left and right ends of the cultivating pipe 4 inside the left and right side plate covers 15a, 15b, and the cultivating pipe 4, Also, the left and right rotary plates 9a and 9b are cultivated while preventing winding of straw waste and weeds.

According to the third aspect of the present invention, a standing wall plate device is provided in front of the left and right rotary plates 9a and 9b so as to prevent spillage and straw pushing, etc., so that the link mechanisms 16 can move vertically. 10. A rotary tilling device such as a tractor according to claim 1 or 2, characterized in that 10 is provided.

When the rotary tiller mounted on the rear part of the tractor and the forming device mounted on the rear side of the rotary tiller perform the cultivating work and the ridge forming work at the same time, This rotary tiller is provided between the gear cases provided on both the left and right sides and the support case, and inside the rotary cover device 15 provided inside, the left and right support metals 7a mounted on the gear cases and the support case, 7
The cultivating claws 8b attached to a plurality of claw holders fixed to the cultivating pipe 4 rotatably supported by b are rotated reversely in the traveling direction to cultivate, and at the outer peripheral portions of the left and right support metals 7a, 7b. The left and right side plate covers 1 of the rotary cover device 15
Left and right rotating plates 9a and 9b that rotate freely in the traveling direction to the left and right ends of the cultivating pipe 4 inside 5a and 15b,
The left and right rotary plates 9a and 9b are provided with link tillers 16 vertically movable to the front portions of the left and right rotary plates 9a and 9b. By the standing wall plate devices 10 and 10, the standing wall plate devices 10 prevent soil spillage and hold down straws and weeds. However, straw and weeds are cut by the left and right rotary plates 9a and 9b, and the tilling pipe 4 and the left and right rotary plates 9 are cut.
a, 9b to prevent wrapping of straw, weeds, etc., and straw with the left and right rotating plates 9a, 9b and the tilling claw of the tilling pipe 4,
Also, ridges of a predetermined width are formed while plowing without pushing weeds.

[0009]

According to the invention described in claim 1, the left and right rotary plates 9a and 9b provided in the rotary tiller are provided with the left and right support metals 7a and 7b which pivotally support the tiller pipe 4, respectively. The left / right rotation plate 9 is provided so as to rotate in the forward direction in a forward rotation direction and to rotate in the forward direction.
It is possible to prevent straws, weeds and the like from being pushed by the a, 9b and each of the tilling claws provided on the tilling pipe 4. Further, it is possible to prevent straw and weeds from being wound around the tilling pipe 4 and the left and right rotating plates 9a and 9b.

According to the second aspect of the invention, the left and right rotary plates 9a, 9b are provided at the left and right ends of the tilling pipe 4, so that the left and right ends of the tilling pipe 4 are
Straw and weed wrapping can be prevented. Further, it is possible to prevent the straws and the weeds from being pushed by the left and right rotary plates 9a and 9b and the respective tillage claws of the tillage pipe 4.

According to the third aspect of the present invention, the link mechanism 16, 1 is provided at the front of the left and right rotary plates 9a, 9b.
Since the standing wall plate devices 10 and 10 are provided so as to be vertically movable at 6, the standing wall plate devices 10 can prevent spilled soil. In addition, before the straw and the weeds come into contact with the left and right rotating plates 9a and 9b, the straws and the weeds are pressed by the standing wall plate devices 10, so that the tilling pipe 4 and the left and right rotating plates 9a, It is possible to prevent wrapping of straw and weeds on 9b. Furthermore, each plowing nail of the plowing pipe 4,
The left and right rotating plates 9a, 9b can prevent pushing straw and weeds.

[0012]

BEST MODE FOR CARRYING OUT THE INVENTION An embodiment of the present invention will be described below with reference to the drawings. The rear part of the tractor 1 is provided with a rotary cultivating device 2 for performing cultivating work and the like, and the rear side of the rotary cultivating device 2 is provided with a forming device 3 for forming ridges. The rotary tilling device 2 and the forming device 3 form a predetermined width simultaneously with the tilling work. The rotary pipe 4 of the rotary tiller 2 is pivotally supported by the left and right supporting metals 7a and 7b provided on the left and right gear cases 5 and the supporting case 6, respectively. Left and right rotary plates 9a and 9b are axially supported on the outer peripheral portions of the left and right support metals 7a and 7b. The left and right rotary plates 9a and 9b are provided at the front with a standing wall plate device 10 including a standing wall plate 10a and a bottom plate 10b. The left and right rotary plates 9a, 9b, etc. will be mainly illustrated and described.

The rear part of the tractor 1 is shown in FIGS.
As shown in, the rotary tiller 2 is mounted via the link mechanism 2a so that it can be lifted and lowered by the lifting cylinder 2b hydraulically driven. This rotary tiller 2 has a structure in which a support case 6 is provided on the right side, a gear case 5 having a transmission mechanism 5a is provided on the left side, and an input gear case 11 having an input transmission mechanism 11a is provided at a central portion. The support case 6 and the gear case 5 are connected by the input gear case 11 and the connection pipes 12, 12 on the left and right sides. In the left drive pipe 12, a transmission mechanism 12a is installed.

The gear case 5, the support case 6,
By each connection pipe 12 and the input gear case 11,
This is a configuration in which the rotary machine frame 13 is formed in a gate shape. As shown in FIG. 1, the lower part of the gear case 5 forming the rotary machine frame 13 of the rotary tiller 2 and the support case 6 has bearings, seals and the like. Is mounted and provided with bolts and nuts and the like, and the right support metal 7b is provided and mounted on the support case 6 with bolts and nuts and the like, and the left and right support metals 7a and 7b are used to cultivate the cultivating pipe 4.
This is a configuration in which is rotatably supported. A plurality of claw holders 8a each having a box-shaped cross section are fixedly provided on the outer peripheral portion of the tilling pipe 4 at predetermined intervals.
In this configuration, a plowing claw 8b is inserted and mounted by using bolts, nuts, spring washers, and the like. The cultivating pipe 4, each claw holder 8a, and each cultivating claw 8b are configured to be rotationally driven in a direction opposite to the forward direction of the tractor 1, and are configured as an ultra-fine soil rotary cultivating device 2. is there.

Outer peripheral portions of the left and right support metals 7a and 7b are provided on the inner side thereof with left and right rotating metals 14a and 14b rotatably rotatably supporting bearings and the like as shown in FIG. It is a composition. This left / right rotating metal 14a, 1
It is provided between the gear case 5 and the support case 6 on the outer side surface of each flange 14c, 14c of 4b. The rotary cover device 15 including the left and right side plate covers 15a and 15b and the ceiling cover 15c is positioned inside the left and right side plate covers 15a and 15b, and the left and right rotary plates 9a and 9b are mounted. It is the structure provided. These left
Right rotating metal 14a, 14b and left / right rotating plate 9a, 9
b is a structure which is provided so as to rotate in the forward rotation direction of the tractor 1 so as to rotate normally and to cut straw, weeds, and the like.
Further, the left and right rotating metals 14a and 14b are structured so as not to come off.

Left and right rotating metals 14a and 14b, which are rotatably provided on the outer peripheral portions of the left and right supporting metals 7a and 7b so as to be rotatable, and the left and right rotating metals 14a and 1b.
The left and right rotary plates 9a and 9b attached to the 4b are provided so as to rotate by forward rotation in a forward rotation direction opposite to the reverse rotation drive in the forward rotation direction of the tilling pipe 4, Left and right rotating plates 9a, 9b, and each tilling claw 8 of the tilling pipe 4.
It is possible to prevent pushing of straws and weeds with a. Further, it is possible to prevent the straw, weeds, and the like from being wrapped around the tilling pipe 4 and the left and right rotating plates 9a and 9b.

As shown in FIG. 2, the left and right rotary plates 9a and 9b are connected to the flanges 14c of the left and right rotary metals 14a and 14b having bearings at the left and right ends of the outer circumference of the tilling pipe 4, respectively. The left and right rotating metals 14a and 14b are mounted and provided, and fixed to a predetermined position by a stop ring 14d or the like.

Since the left and right rotating plates 9a and 9b are provided at both left and right ends of the tilling pipe 4, the tilling pipe 4 is
Straws and weeds can be prevented from wrapping around the left and right ends of the. Further, it is possible to prevent the straws and the weeds from being pushed by the left and right rotary plates 9a and 9b and the respective tillage claws of the tillage pipe 4.

The left and right rotary plates 9a and 9b are provided at their front portions with
As shown in FIGS. 3 and 4, one side portion of the link mechanisms 16 and 16 is provided on the left / right side plate cover 1 of the rotary cover device 15.
5a and 15b are mounted and provided, and the other side portion is mounted on the standing wall plate 10a of the standing wall plate device 10. Each standing wall plate device 10 is vertically movable by each link mechanism 16. The standing wall plate 10 of this standing wall plate device 10
a is formed substantially vertically upward from the arc shape of the lower front side,
A bottom plate 10b having a predetermined width extending from the upper front portion to the lower rear portion.
Is fixedly provided.

The standing wall plate 10a of the standing wall plate device 10 prevents spillage. Also, by the bottom plate 10b,
While running while holding straw and weeds, the straws and weeds are cut by the left and right rotating plates 9a and 9b, and the straws and weeds are cut to the tilling pipe 4 and the left and right rotating plates 9a and 9b. It is configured to prevent wrapping, and to form ridges of a predetermined width while cultivating without pushing straws, weeds, etc. by the left and right rotary plates 9a, 9b and the cultivating claw 8b of the cultivating pipe 4.

In front of the left and right rotary plates 9a, 9b,
Each of the standing wall plates 10a is vertically movable by each link mechanism 16,
By providing each standing wall plate device 10 including each bottom plate 10b, it is possible to prevent spilled soil by each standing wall plate 10a. Also, straws on the left and right rotating plates 9a, 9b,
And the weeds and the like are brought into contact with each other, the straws and the weeds and the like are pressed by the bottom plate 10b provided on the lower side of each standing wall plate 10a, so that the tilling pipe 4 and the left / right rotating plate 9
It is possible to prevent wrapping of straw and weeds around a and 9b. Further, the tilling claw 8b of the tilling pipe 4, and the left and right rotating plates 9a,
9b can prevent pushing straw and weeds.

At the rear part of the tractor 1, a traveling gear case 17 having a transmission mechanism 17a therein is provided as shown in FIG. 10, and the output shaft 1 protruding rearward from the transmission mechanism 17a.
It has a structure in which 7b is rotatably supported. The input transmission mechanism 11a of the input gear case 11 is provided with an input shaft 11b projecting forward and supported rotatably.
The output shaft 17b of the traveling gear case 17 is connected with a universal joint rod 18.

A pair of front wheels 20a are provided on the front left and right sides of the traveling chassis 19 of the tractor 1, and a pair of rear wheels are provided on the traveling axle 17c protruding outward from the traveling gear case 19 on the rear side. This is a configuration in which 20b is rotatably supported. The rotational power of the tractor 1 is transmitted from the engine 19a, the output shaft 17b of the traveling gear case 17, the universal joint rod 18, and the input gear case 1
1 is input to the input shaft 11b, and the input gear case 1
The transmission mechanism 11a of No. 1 is rotationally driven, the cultivating pipe 4 of the rotary cultivating device 2 is rotationally driven reversely with respect to the forward traveling of the tractor 1, and each cultivating pawl 8b is rotationally driven, so that the field is in an ultrafine soil state. The structure is cultivated in. Also, tractor 1
The left and right rotary plates 9a and 9b are rotatably supported on the outer peripheral portions of the left and right support metals 7a and 7b provided on the gear case 5 and the support case 6 by running,
Straw and weeds are cut off.

An engine 19a is mounted on the front upper side of the traveling chassis 19 of the tractor 1 as shown in FIG. 10, and the engine 19a is covered with an engine cover 19b. Further, a handle 21a for operation is provided on the rear side of the engine 19a, and a cockpit 21b is provided on the rear portion of the handle 21a. The steering wheel 21a is operated by the pilot operating on the cockpit 21b.
Is operated to perform, for example, plowing work or the like.

At the rear side of the rotary tiller 2 provided at the rear portion of the tractor 1, as shown in FIGS. 5 to 9, at the same time as the tilling work, there is provided a forming device 3 for forming a ridge width set to an arbitrary width. It is a composition. The molding device 3 includes a mounting plate 1 provided on the base side of the connection pipes 12, 12 as shown in FIGS.
The mounting members 22 are attached to the long holes 12c on the front and rear sides of the 2b and 12b by means of bolts and nuts so as to be vertically rotatable.

On the lower surface of the rear end of the mounting member 22,
A horizontal main pillar 23 is fixedly provided, and left and right sides of the horizontal main pillar 23 are provided by inserting left supporting rods 25a which can be moved left and right by horizontal hydraulic telescopic cylinders 24, and right supporting rods 25b.
Is provided by inserting. Left and right support rods 25a, 2
5b is provided with receivers 26a and 26b.
The auxiliary wheel 26b is rotatably supported by a. According to the ridge to be formed, the left support rod 25a is moved leftward and rightward by the lateral expansion and contraction cylinder 24 to form a ridge having a predetermined width.

On the left and right sides of the lower part of the horizontal column 23, horizontal plates 27a, 27a which can be moved left and right by an adjusting tool 28a which forms a ridged surface, and a front plate 27b which can be moved left and right by a front support frame 29, 27b and the front plate 27b, 2
On the front side of 7b, auxiliary front plates 27c, 27c are provided to be movable left and right by a moving tool 28b.

At the lower part of the horizontal column 23, the front end portion of an upper plate 30 which is divided into left and right and forms the upper side surface of the ridge is fixedly provided on a rotatable shaft 30b, and the upper plate 3 is also provided.
On the upper side of 0, 30, the middle upper plate 31 is attached to each long hole 30a of each upper plate 30 so that the upper plates 30, 30 can move left and right, and the front end of the middle upper plate 31 is rotated. The pipe 31a is fixed to the rotary pipe 31a, the rotary pipe 31a is inserted into the rotary shaft 30a, and the rotary pipe 31a is rotatably supported.

Support shafts 32, into which springs 32a are inserted, are provided at the rear ends of the upper left and right sides of the middle upper plate 31, respectively.
It is a structure supported by a rear support tool 33 provided on the rear side of the horizontal column 23. The upper plate 30 and the middle upper plate 31 are the springs 3
It is configured to be vertically movable by the elastic force of 2a, and the upper side surface of the ridge is formed by each of these upper plates 30 and the middle upper plate 31.

Between the left and right front plates 27b, 27b, as shown in FIGS. 8 and 9, a tooth device 34 and one auxiliary tooth device 35 are provided outside the tooth device 34 by means of a ridge. This is a configuration in which two or more pieces are provided. The tooth device 34 and the auxiliary tooth device 35 are configured to be inserted into the front support frame 29 and attached by bolts or the like.

As shown in FIGS. 8 and 9, the tooth device 34 has a structure in which a plurality of separating members 34a made of round bar members are fixed to a mounting frame 34 made of a square pipe member at predetermined intervals. Further, the auxiliary tooth device 35 has a structure in which a plurality of separation rods 34a are fixed at predetermined intervals to an auxiliary mounting frame 35a made of a square pipe material.

On the upper side surface of the input gear case 11,
As shown in FIGS. 5 and 6, a substantially V-shaped support plate 36 is provided, and a link mechanism 37 is provided above the mounting member 22.
An adjustment handle 36a is rotatably provided on the link mechanism 37 and the support plate 36, and the molding device 3 is moved up and down via the link mechanism 37 by the rotation operation of the adjustment handle 36a. It is a configuration, and there is a configuration in which the approximate height can be changed.

The ridge width formed by the forming device 3 is adjusted by operating the lateral expansion / contraction cylinder 24 to adjust the entire width of the forming device 3. Further, the ridge height is configured by adjusting the vertical height position of the molding apparatus 3 by rotating the adjustment handle 36. As shown in FIG. 10, an operating device 38 is provided in the lower front portion of the handle 21a of the tractor 1, and the operating device 38 includes a ridge pitch setting groove 38a for setting a ridge pitch, a main power switch 38b, and a left / right switch. In addition to providing the changeover switch 38c, the lateral expansion / contraction seeder 24 for laterally moving the entire width of the molding apparatus 3 is provided with a potentiometer 39 for detecting the expansion / contraction amount.

A control device 40 installed in the operating device 38
As shown in FIG. 12, when the power supply 41 is turned on, "ON" of the main power supply switch 38b is input, and the ridge pitch setting knob 38a.
Is operated to a predetermined position, the volume of this set position is input, the turning direction of the tractor 1 is, for example, a left turn, and when the left / right changeover switch 38c is operated to the left, the tractor 1 is operated next time. When the turning to the left is completed, the control device 40 operates the lateral expansion / contraction cylinder 24 to move the molding device 3 by the calculated movement amount, and the operation amount is detected by the potentiometer 39.
The control device 40 controls the movement of the molding device 3 by the lateral expansion / contraction cylinder 24 until the detected value is calculated as a distance and the ridge pitch set by operating the ridge pitch setting groove 38a is reached.
When the set ridge pitch is reached, the control device 40 stops the operation of the lateral expansion / contraction cylinder 24 and stops the movement of the molding device 3.

As a result, even if the ridge pitch is changed, the lateral movement of the molding device 3 for automatically forming the ridge width is controlled, so that the position of the mitt switch is changed from the tractor 1 as in the conventional case. Also, it is not necessary for the driver to change the pin position, and the operation is simple.

As shown in FIGS. 13 to 15, each mounting plate 42 provided on the outer periphery of the rotary tiller 2 in the vicinity of the left and right ends of the tiller pipe 4 has straws, weeds, etc. This is a configuration in which a plurality of clean bars 43 for preventing winding are attached by nuts or the like. Protrusions 43a are provided at a plurality of locations on the outer peripheral portion of the clean bar 43 made of a round bar as shown in FIG.
At a, the straw and the weeds are cut and the winding is prevented.

Thus, by providing each protruding portion 43a on the outer peripheral portion of the clean bar 43, the straw to be wound around the tilling pipe 4 and the weeds are cut off to prevent the winding. Has a great effect. As shown in FIGS. 16 and 17, a plurality of clean bars 43 are attached to the respective mounting plates 42 provided at both left and right ends of the tilling pipe 4 of the rotary tiller 2 by nuts or the like. is there. A circular cutting plate 44a is fixedly provided on the clean bar 44 at a predetermined interval in the left-right direction in an inclined state of a predetermined angle. Each cutting plate 44a cuts straw, weeds, and the like, and prevents them from wrapping.

As a result, since the cutting plates 44a are provided on the outer peripheral portion of the clean bar 44 at a predetermined interval, the straws about to be wound around the tilling pipe 4 or the like,
By cutting off weeds and the like, the effect of preventing wrapping is great. The tiller claw 8b attached to the claw holder 8a at the substantially middle position in the left-right direction of the tiller pipe 4 of the rotary tiller 2 has a round hole 45a and an elongated hole 45b as shown in FIGS. The plate 45 has a U bolt 46.
And a nut or the like.

A clean bar 47 is attached by means of the mounting plates 42, 42 provided at the left and right ends of the tilling pipe 4 and the round hole 45a of the intermediate plate 45. Both ends of the clean bar 47 are provided by being attached to the mounting plates 42, 42 with nuts or the like, and a substantially central portion of the clean bar 47 in the left-right direction is provided with the round hole 4 of the intermediate plate 45.
It is a structure that is inserted into and supported by 5a. This clean bar 47 cuts straw, weeds, etc., and cultivates the pipe 4
It is a structure that prevents wrapping of straw and weeds.

The mounting position of the clean bar 47 is adjusted by the long hole 45b of the intermediate plate 45 depending on the position far from or close to the mounting position of the tilling claws 8b at the left and right ends. As a result, the one type of the intermediate plate 45 can cope with the tilling pipe 4 of various widths. Also, by supporting the substantially middle portion of the clean bar 47 in the left-right direction, the clean bar 4
7 can be prevented.

The mounting plates 48 and 48 fixed to the claw holders 8a and 8a fixed to the left and right ends of the tilling pipe 4, respectively,
As shown in FIGS. 21 to 23, the clean bar 47 is mounted by a nut or the like, and is provided. However, the fixing positions of the claw holders 8a, 8a at the left and right ends are displaced, and the mounting plate 4 is
When 8 and 48 are fixed to the claw holders 8a and 8a in a right angle state, the clean bar 47 is bent and mounted as shown in FIG. 24, and breakage may occur. 23. As shown in FIG. 23, the mounting plates 48, 48 fixed to the claw holders 8a, 8a at the left and right ends are fixed by inclining them at a predetermined angle (α), and the clean bar 47 is mounted in a substantially linear state with a nut or the like. This is the configuration provided. The clean bar 47 cuts straw, weeds, and the like to prevent the straw, weeds, and the like from being wrapped around the tilling pipe 4 and the like.

As a result, the mounting plate 4 fixed to the claw holders 8a fixed to the left and right ends of the tilling pipe 4 is fixed.
This mounting plate 4 is provided by inclining 8 and 48.
By mounting the clean levers 47 attached to the Nos. 8 and 48 in a substantially straight line, the strength can be increased and the cutting efficiency of straw, weeds and the like can be improved.

[Brief description of drawings]

[Fig. 1] Enlarged back cross-sectional view of the cultivating pipe section

FIG. 2 is an enlarged back cross-sectional view of the cultivating pipe section.

FIG. 3 is an enlarged side view of the standing wall plate device section.

4 is a sectional view taken along line AA of FIG.

FIG. 5 is an enlarged side view of a rotary cultivating device section and a forming apparatus section, partially in section.

FIG. 6 is an enlarged side perspective view of a rotary tilling device unit and a forming device unit.

FIG. 7 is an enlarged plan view of the rotary tiller unit and the forming unit.

FIG. 8 is an enlarged rear view of the tooth device and the auxiliary tooth device.

FIG. 9 is an enlarged rear perspective view of the tooth device and the auxiliary tooth device.

FIG. 10 is an overall side view of a tractor and a rotary tilling device section.

FIG. 11 is a plan view of an operating device and a horizontal telescopic cylinder, showing another embodiment.

FIG. 12 is a block diagram showing another embodiment.

FIG. 13 is a view showing another embodiment, and is an enlarged rear perspective view of a rotary tilling device section.

FIG. 14 is a view showing another embodiment, and is an enlarged front view of the clean bar.

15 is a view showing another embodiment, which is a cross-sectional view taken along line BB of FIG.

FIG. 16 is a view showing another embodiment, and is an enlarged rear perspective view of the rotary cultivating device section.

FIG. 17 is a view showing another embodiment, which is an enlarged front view of the clean bar.

FIG. 18 is a view showing another embodiment, and is an enlarged rear perspective view of the intermediate plate portion.

FIG. 19 is a view showing another embodiment, which is an enlarged rear perspective view of the intermediate plate portion.

FIG. 20 is a plan view of a cultivating pipe section showing another embodiment.

FIG. 21 is a view showing another embodiment, and is an enlarged perspective view of a cultivating pipe part.

FIG. 22 is a plan view of a cultivating pipe section showing another embodiment.

FIG. 23 is a view showing another embodiment, and is an enlarged rear perspective view of a mounting plate portion.

FIG. 24 is a view showing another embodiment, and is a plan view of the cultivating pipe section.

[Explanation of symbols]

4 tillage pipes 7a Left support metal 7b Right support metal 8b tillage nail 9a Left rotation plate 9b Right rotating plate 10 Standing wall board device 15 Rotary cover device 15a Left side plate cover 15b Right side plate cover 16 link mechanism

   ─────────────────────────────────────────────────── ─── Continued front page    F term (reference) 2B032 AA07 CA06 CB14 CB16 CB17                       CB23 CB24 GA02 GA18 GA20                       GA22 GA26 GA28 GA32 GA33                       GA37                 2B033 AA05 AB01 AB11 AC05 AC07                       BC04 BD02 BD04 DB23 EB02                       EB04 ED05 ED08                 2B041 AA07 AA15 AB05 AC03 AC20                       CA04 CA12 CA19 CB01 CB06                       CD02 CD04 CD09 CD12 CG08                       DA04 DA09 DB02 DB09 DC01                       DC07 DC18 HA04 HA13 HA17                       HA21

Claims (3)

[Claims] 1. A rotary cover device having left and right support metals 7a, 7b for pivotally supporting a cultivating pipe 4 equipped with a plurality of cultivating claws 8b for cultivating a field so as to be reversely rotatable in a traveling direction and a cultivating pipe 4 inside. In a tractor with 15 etc.,
Inside the left and right side plate covers 15a and 15b of the rotary cover device 15 at the outer circumferences of the left and right support metals 7a and 7b, there are left and right rotation plates 9 that rotate in the forward direction so as to rotate forward.
A rotary tiller such as a tractor, which is provided by axially supporting a and 9b. 2. The rotary tiller according to claim 1, wherein the left and right rotary plates 9a, 9b are provided at both left and right ends of the tiller pipe 4. 3. A standing wall plate device 10 is provided at the front portion of the left and right rotary plates 9a, 9b so as to be vertically movable by each link mechanism 16 so as to prevent spillage and straw pushing. The rotary tiller such as the tractor according to claim 1 or claim 2.