JP2003199401A - Apparatus for removing entwined weed of rotary tiller - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To prevent weeds from entwining with tine shafts by arranging an entwining preventing tool in a rectilinear state, and simply and readily mounting the tool in an apparatus for removing the entwined weeds of a rotary tiller. <P>SOLUTION: This apparatus for removing the entwined weeds of the driving rotary tiller is obtained by mounting a plurality of tines 3 through tine brackets 4 at an interval in the shaft direction and the peripheral direction on the freely rotatable tine shafts 2 and other tines 3 present on a line connecting the tines 3 at both ends of each tine shaft 2. In the rotary tiller, the nearly rectilinear entwining preventing tool 6 is arranged between a tine 3 adjacently arranged on the inner side of the tine 3 at one end and the tine 3 at the other end or the tine 3 adjacently arranged on the inner side of the tine 3. <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 a wound grass removing device for a rotary tiller.

[0002]

2. Description of the Related Art For example, in a side-drive rotary cultivator, as disclosed in Japanese Unexamined Patent Publication No. 10-150801, a pawl shaft rotatably supported by a transmission case and a side frame is arranged in an axial direction. And, install a number of claws at intervals in the circumferential direction via claw brackets,
A linear winding preventive tool is mounted on the nail shaft to prevent grass from being wrapped around the nail shaft. The claws are arranged at different circumferential positions on the claw shaft in order to avoid concentration of tilling resistance on the claw shaft, and almost other claws are arranged on the line connecting the claws on the left and right ends of the claw shaft. It has an existing nail arrangement.

Therefore, when a flexible linear member such as a wire is used for the wrapping prevention tool, a relay tool is provided to bend the linear member by using another claw on the line connecting the claws at both ends as a relay point. ing.

[0004]

In the above-mentioned prior art, since a relay tool is required in the middle of the anti-wrapping tool or the anti-wrapping tool is bent, it is durable because it comes into contact with other nails. The sex is getting lower. In addition, it is difficult to use a bar for the linear member. By the way, although all the claws between the both ends of the claw shaft are arranged without any gap in the circumferential direction of the claw shaft, except for one or both of the claws at the left and right ends of the claw shaft or those in the vicinity thereof. , The remaining claws, that is, the claws that are arranged closer to the claw at one end on the claw shaft on the inner side (center side of the claw shaft) and the claws on the other end or the claws arranged closer to the claw on the inner side. In between, you will be able to connect with a straight line.

It is an object of the present invention to provide a wound grass removing device for a rotary tiller, which is capable of solving the above-mentioned problems of the prior art by paying attention to such a point.
According to the present invention, a substantially linear anti-winding device is arranged between a claw arranged inwardly close to a claw at one end and a claw at the other end or a claw arranged inwardly close to the claw at the other end. By doing so, the winding preventive tool can be arranged in a substantially straight line without being obstructed by the claws in the middle, and a wound grass removing device for a rotary cultivator capable of easily and easily mounting and preventing the winding can be provided. The purpose is to

[0006]

A first specific means for solving the problems in the present invention is to provide a large number of claws 3 on a rotatable claw shaft 2 at intervals in the axial direction and the circumferential direction. In a rotary cultivator that is mounted via a bracket 4 and has other claws 3 on the line connecting the claws 3 at both ends of the claw shaft, the claws 3 that are arranged inwardly close to the claws 3 at the one end are provided. That is, the substantially straight wrapping preventive tool 6 is arranged between the other end of the claw or the claw 3 that is arranged closer to the claw 3 on the inner side.

As a result, the winding preventive tool 6 can be provided in a substantially straight line without being obstructed by the claws 3 in the middle, and the mounting is simple and easy, and the grass to be wound around the claw shaft 2 can be easily removed. Eliminate more reliably. In addition to the first concrete means, the second concrete means for solving the problems in the present invention is such that the winding preventing tool 6 has claws 3 at both ends of the linear member 7.
That is, the mounting body 8 to be attached to is provided. This makes it possible to easily configure the winding prevention tool 6 and easily attach it to the nail 3.

The third concrete means for solving the problems in the present invention is, in addition to the second concrete means, the mounting body 8 of the wind-up prevention tool 6 has a plurality of claw fitting holes 9 in the longitudinal direction. Is provided. As a result, the position of the mounting body 8 with respect to the pawl shaft 2 can be adjusted, and the present invention can be applied to rotary tillers of different types or different types. The fourth concrete means for solving the problems in the present invention is the second or third means.
In addition to the specific means described above, the mounting body 8 of the anti-wrapping tool 6 is located at a position displaced from the center in the width direction to one or both.
Alternatively, a plurality of linear member connecting portions 10 are provided.

Thus, the linear member 7 can be arranged while adjusting its position so as not to interfere with the claw 3. The fifth concrete means for solving the problem in the present invention is the winding prevention tool 6 in addition to any one of the second to fourth concrete means.
Is to have an anti-winding extension 11 protruding from the mounting body 8 to the side of the pawl 3 located on the shaft end side. Accordingly, even if the wraparound prevention tool 6 is provided from the claw 3 that is disposed inwardly close to the claw 3 at the one end, the grass that tends to wrap around the claw of the claw 3 at the one end can be eliminated.

A sixth concrete means for solving the problems in the present invention is the mounting body 8 in addition to the fifth concrete means.
The wrapping prevention extension 11 has a blade shape or a wing shape. As a result, the grass hanging on the winding prevention extension 11 can be moved laterally, and adhesion of grass can be prevented. A seventh concrete means for solving the problems in the present invention is, in addition to any one of the second to sixth concrete means,
The mounting body 8 is formed such that the leading side edge in the rotational direction is formed into a cutting edge shape.

As a result, adhesion of grass to the mounting body 8 can be prevented more reliably. Eighth concrete means for solving the problems in the present invention is, in addition to any one of the second to seventh concrete means, a cylindrical member 14 that is rotatable relative to the linear member 7.
Is provided. Thereby, even if the linear member 7 of the winding preventive tool 6 interferes with the claw 3, the tubular member 14 can be prevented from being damaged by the abutment of the tubular member 14 on the claw 3. The ninth concrete means for solving the problems in the present invention is, in addition to any one of the first to eighth concrete means,
One end of the pawl shaft 2 is supported by a transmission case 22 constituting the cultivator frame 21 to enable power transmission, and the other end of the pawl shaft 2 is rotatably supported by a side frame constituting the cultivator frame 21. That is.

Thus, the winding preventive tool 6 can be attached to the claw shaft 2 of the side drive type rotary cultivator to prevent the grass from being wound.

[0013]

BEST MODE FOR CARRYING OUT THE INVENTION Embodiments of the present invention will be described below with reference to the drawings. 1, 2, 15, and 19 show a center drive type rotary tiller 1A. Two
1A is a cultivator frame, a gear case 32 having an input shaft 31
The transmission case 22A is attached to the lower part of the
A support arm 33 is projected to the left and right, and a tilling cover 34 is attached. A drive claw shaft 35, to which power is transmitted from the input shaft 31 via chain transmission means, is supported on the lower portion of the transmission case 22A. The drive pawl shaft 35 protrudes leftward and rightward from the transmission case 22A, has one end of the pawl shaft 2 connected to both ends thereof, constitutes a part of the pawl shaft 2, and is a horizontal pawl shaft.

On the left and right side surfaces of the lower portion of the transmission case 22A, a mounting portion 26 having a circular outer periphery is formed to project, and an inclined pawl shaft support member 36 is fixed to the mounting portion 26 by a bolt, and a bearing 37 is interposed therebetween. The tilting claw shaft 15 is rotatably supported in an outwardly downwardly inclined shape. That is,
The inclined pawl shaft 15 is supported on the left and right side portions of the transmission case 22, and the horizontal pawl shaft 2 is projected outward from the left and right inclined pawl shafts 15. An internal gear 38 is formed on the inner peripheral surface of the inclined pawl shaft 15, meshes with a gear 39 provided on the drive pawl shaft 35, and is inclined from the horizontal drive pawl shaft 35. 15 is driven.

The left and right claw shafts 2 are cylindrical shafts,
In FIG. 19, a flange 40 is fixed to the free end (outer end) and the extension claw shaft 17 is connected. A large number of claw brackets 4 are attached to the claw shaft 2 and the extension claw shaft 17 at intervals in the axial direction and the circumferential direction, the claws 3 are inserted into the respective claw brackets 4, and mounting pins (may be bolts) 41.
It is locked in. As shown in FIG. 2, when the number of claws is 16 and the claw shaft 2 rotates clockwise, the claw bracket (claw) arrangement on the claw shaft 2 is from a support end side on the transmission case side to a free end side a1. Since the a16 are arranged in a double or more spiral arrangement, and the claw 3 has a width in the circumferential direction of the claw shaft 2, the claws 3 (a1) and the claws 3 (a1) at both ends of the claw shaft 2 are arranged. a16)
The other nail 3 (a8) is present on the line connecting the two.

There are two pawls 3 mounted at the same position in the axial direction of the pawl shaft 2, the a1 and a2, the a5 and a.
6, a11 and a12 are at the same position. In this claw arrangement, when focusing on the claw 3 (a2) that is arranged closer to the claw 3 (a1) on the support end side of the claw shaft 2 on the inner side (center side of one claw shaft 2), this claw 3 (A2) is close to the claw 3 (a14) on the free end side in the circumferential direction, and even if these two claws 3 are connected by a straight line, it is clear that the other claw 3 is not located on the connection. Become. There is no other claw 3 on the longest possible connection 2
Select the nails 3 of the book and prevent the wrapping between the nails 3
Is attached, and the nail 3 (a1), the nail 3 (a13), and the nail 3
(A3) and the claw 3 (a16) also have a relatively long straight line distance, which is one of the options, and when two or more winding prevention tools 6 are attached to one claw shaft 2, these are select.

As shown in FIG. 1, the winding preventive tool 6 to be mounted is preferably arranged in parallel with the pawl shaft 2 as much as possible.
Select a position in the circumferential direction of the claw shaft 2 where there is no other claw 3 on the connection so that the end on the A side is ahead of the end on the free end side in the rotation direction of the claw shaft 2. It is preferable to set so that the grass caught on the winding preventive tool 6 due to the tillage does not move to the transmission case 22A side, that is, to move to the free end side of the pawl shaft 2. The nail 3 (a1) is the nail 3
In contrast to (a13), the claw 3 (a2) is located on the transmission case 22A side with respect to the claw 3 (a14), and the claw 3 (a3) is located on the transmission case 22A side and the leading side in the rotation direction. Has become.

Further, the transmission case 22 of the winding preventive tool 6
The end on the A side is located further outward in the radial direction of the claw shaft 2 than the end on the free end side, the winding preventive tool 6 is inclined downward toward the free end side, and the grass caught on the preventive winding tool 6 of the claw shaft 2 is caught. You may make it move to the free end side. The pawl 3 mounted on the pawl shaft 2 is a normal pawl or a general nape, but the inclined pawl shaft 1
The claws 3 attached to the claws 5 have special claws so that the soil below the transmission case 22A can be cultivated, and one or a plurality of claws 3 are mounted on the inclined claw shaft 15 in the axial and circumferential directions. It is attached in such a way that it is deviated in the direction through the claw bracket 4.

The claw bracket 4 has two large and small U-shaped cross-section members fitted together and welded to the claw shaft 2. The base of the claw 3 is inserted, the mounting pin 41 is inserted through them, and the nut 42 is inserted. It is attached by screwing. The claw bracket 4 of the claw shaft 2 and the claw bracket 4 of the inclined claw shaft 15 are
As shown in FIG. 3, the claw brackets 4 of the inclined claw shaft 15 are formed in substantially the same shape and are attached to the claw shafts, but the claw brackets 4 of the inclined claw shafts 15 project outward in the radial direction from the claw brackets 4 of the claw shaft 2. 1 and 4, the winding preventive tool 6 includes a linear member 7
A mounting body 8 attached to the claw 3 is connected to both ends of the. The linear member 7 is formed of a substantially straight rod or wire, and the tubular member 14 is fitted therein so as to be rotatable relative to each other, and both ends thereof are provided with connecting pieces 45 for connecting with the mounting body 8. .

The length of the connection between the rod or wire forming the linear member 7 and the connecting piece 45 is adjustable, and the length of the linear member 7 can be finely adjusted. Further, the linear member 7 may be formed only by a rod or a wire that does not fit the tubular member 14. The mounting body 8 is formed of a rectangular flat plate, and has a claw fitting hole 9 for fitting the claw 3 and a pin hole 47 for inserting a pin 46 for connecting with the connecting piece 45.
Are formed. In FIG. 1, the same mounting bodies 8 are used at both the left and right ends of the linear member 7, and one is mounted at one position (or both) displaced from the center in the width direction at one end of the rectangular plate ( Or a plurality of) pin holes 47 (the linear member connecting portion 10) are formed, and 3 from the pin hole 47 to the other end.
One (one or more than one) claw fitting holes 9 are formed at intervals in the longitudinal direction.

The mounting body 8 close to the transmission case 22A is fitted to the claw 3 at the inner end of the claw shaft 2 or a claw in the vicinity thereof, and the mounting body 8 is mounted to the claw 3 at the free end side of the claw shaft 2. However, the mounting body 8 is fitted to one or a plurality of inward claws 3 thereof. The distance between the left and right attached bodies 8 of the wraparound prevention tool 6 is
It is formed so as to fit the distance between the two selected claws 3, but a slight difference in size is adjusted by adjusting the length of the linear member 7, and a major difference is a claw fitting that fits the claw 3. This is done by changing the abutment holes 9.

Each mounting body 8 has a pawl fitting hole 9 near the center of the pawl shaft 2 fitted in the pawl 3, and the end of the mounting body 8 near the transmission case 22A on the transmission case 22A side is inclined. Claw shaft 15
And a winding prevention extension 11 for preventing the grass from winding around the inclined pawl shaft 15.
That is, the mounting body 8 close to the transmission case 22A serves both to connect the linear member 7 to the claw 3 and to prevent grass from wrapping around the inclined claw shaft 15.
By enlarging the radius of the virtual claw axis in 5, long wrapping of grass is prevented.

The outer end of the mounting body 8 on the free end side of the pawl shaft 2 is extended to a position substantially overlapping the pawl 3 at the outermost end, so that the grass is wrapped around the free end side of the pawl shaft 2. An anti-wrap extension 11 is formed to prevent this. The winding prevention extension 11 is formed in an arc shape, a blade shape, or a wing shape in which the leading side edge in the rotation direction gradually shifts to the trailing side as it moves away from the front side of the claw 3, and the grass to be caught is moved outward. It is preferable to form such a shape so that the leading side edge thereof has a cutting edge shape.

The two nails 3 selected are naturally the nail shafts 2.
In most cases, the claws 3 do not exist on the connection, and even if the linear member 7 is connected to the center of each mounting body 8 in the width direction, the claws 3 do not interfere, but There is a possibility of abutting due to peeling. However, as described above, by forming the pin hole 47 at a position displaced from the widthwise center of one end of the mounting body 8, if the mounting body 8 is turned upside down, the displacement direction of the pin hole 47 changes. , The middle part of the linear member 7 can be arranged so as not to interfere with the claw 3 more reliably,
In addition, by forming a plurality of pin holes 47 in the width direction, the pin holes 47 that connect the linear members 7 are changed, and the claw 3 is formed.
And the linear member 7 can be more reliably prevented from interfering with each other, and further, the position of the pin hole 47 is selected in order to provide the linear member 7 as parallel to the pawl shaft 2 as possible. You can

The wraparound prevention tool 6 inserts the claw 3 into the claw fitting hole 9 of the mounting body 8 and mounts the claw 3 on the claw bracket 4, so that the claw shaft 2 is linearly aligned with the claw shaft 2. When the mounted body 8 contacts the claw bracket 4, the position of the claw shaft 2 in the radial direction is restricted, and the two claws 3 to be fitted are displaced in the circumferential direction. Outward movement is restricted. The winding preventive tool 6 is a nail 3 in the middle part.
However, since the tubular member 14 is rotatably fitted in the linear member 7, the linear member 7 and the claw 3 are in direct contact with each other. Can be avoided and damage to the linear member 7 can be prevented.

A plurality of claw fitting holes 9 are formed in the mounting body 8 in the longitudinal direction.
By forming the above, it is possible to set various distances between the claws 3 to which the wind-up prevention tool 6 is connected, and it is also applicable to a rotary tiller having a different tilling width. FIG. 5 shows a second example of the winding preventive tool, in which only one claw fitting hole 9 of the mounting body 8 is formed, and pin holes 47 are provided at two positions in the width direction of the mounting body 8 and in the longitudinal direction. It is formed in three places on the long connecting piece 4
It is possible to select 6 pin holes 47 by 5 and connect them by pins 46. Therefore, the mounting body 8 is not formed with the wrapping prevention extension 11. When the mounting body 8 is used upside down, three pin holes 47 may be formed on one side.

The mounting body 8 has a plurality of pin holes 47 in the longitudinal direction.
By forming the above, the distance between the claws 3 to which the anti-wrapping tool 6 is connected can be variously set, and the invention can be applied to a rotary cultivator having a different plowing width, and the types of the anti-wrapping tool 6 can be reduced. FIG. 6 shows a third example of the winding preventive tool, in which only one claw fitting hole 9 of the mounting body 8 is formed, and the pin hole 47 extends in the longitudinal direction on one side deviated from the center of the mounting body 8 in the width direction. It is formed in two places. Further, the front side of the mounting body 8 in the rotation direction of the claw shaft 2 is formed into an arc-shaped edge portion 51 and has a blade shape or a wing shape.
The grass caught on 1 can be forcibly moved laterally and eliminated.

FIG. 7 shows a fourth example of the wraparound preventive tool, in which the arcuate edge 51 on the leading side in the claw shaft 2 rotation direction of the mounting body 8 shown in the third example is further formed in a sawtooth shape. Therefore, the grass caught on the leading edge portion 51 of the mounting body 8 can be cut while forcibly moving laterally. The saw-tooth shape of the mounting body 8 may be a pointed cutting tooth shape, and may be formed not only in the arc edge portion 51 but also in the entire length of the leading side edge. Similarly, the winding prevention extension 11 or the total length of each mounting body 8 of the first example shown in FIGS. 1 and 4 and the second example shown in FIG. Then, it is preferable to form so that the grass to be caught can be cut.

FIG. 8 shows a fifth example of the winding preventive tool, in which the mounting body 8 on the free end side of the pawl shaft 2 is different from the previous example, and the pin hole 47 rotates with respect to the pawl fitting hole 9. The claws 3 are formed so as to be displaced in the direction, and are connected on the connection of the two claws 3 to be selected.
Even if there is, the linear member 7 is avoided by avoiding the interference with the claw 3.
The mounting body 8 on the free end side is formed so that the mounting body 8 can be arranged. Thereby, the claw 3 (a1) and the claw 3 (a1)
6) It becomes possible to attach the winding prevention tool 6 to and. 9 to 11 show a second embodiment of the present invention,
The winding preventive tool 6 has a linear member 7 and a mounting body 8 provided at one end thereof, and the other end of the linear member 7 has a circular flange 40.
Is connected to a mounting bracket 16 mounted on the.

The flange 40 is provided with a bolt hole 53 for connecting the substantially hook-shaped extension flange 17a of the extension claw shaft 17 with a bolt, and the bolt hole 53 and the new bolt hole 54 are used to form a bolt. The mounting bracket 16 is fixed via 55. The mounting bracket 16 has an arc portion 16a, arm portions 16b protruding radially outward from both ends of the arc portion 16a, and both arm portions 16b.
Has a mounting portion 16c that protrudes substantially parallel to the pawl shaft 2 from the connecting member 45 on the free end side of the linear member 7
It is connected to the pin hole 6c. The mounting portion 16c
Like the pin hole 47, a plurality of pin holes may be formed in the axial direction and / or the circumferential direction of the pawl shaft 2.

In the second embodiment, the horizontal pawl shaft 2
A substantially linear anti-wrapping device 6 can be arranged between the claw 3 closest to the transmission case 22 and the mounting bracket 16 provided at the free end. In order to arrange the linear member 7 more linearly and as parallel as possible to the pawl shaft 2 in different rotary cultivator models, a mounting bracket 16 dedicated to each model may be prepared. FIG. 12 shows a second example of the mounting bracket 16. The mounting bracket 16 is mounted on the flange 40 by also using three bolts for mounting the extension flange 17a. In the second example, the length of the arc portion 16a is different from that of the first example so that the intervals between the two arm portions 16b in the circumferential direction of the claw shaft 2 are different.

In the second embodiment, one claw shaft 2 is used.
Although it is premised that the two winding preventive tools 6 are attached to the above, only one arm portion 16b may be projected from the circular arc portion 16a so that one winding preventive tool 6 may be attached. 13 and 14 show an extension wrap preventive tool.
A substantially rice ball-shaped flange 40 is attached with a substantially rice ball-shaped extension flange 17a of the extension claw shaft 17 via a bolt 55, and the claw 3 on the claw shaft 2 side and the claw 3 on the extension claw shaft 17 side are attached.
An extension wrap prevention tool 27 is attached between and.

This extension wrapping prevention device 27 is similar to the wrapping prevention device 6 in that a mounting body 8 is connected to both ends of a linear member 7, and the mounting body 8 at one end is wrapping prevention on the pawl shaft 2 side. It also serves as the mounting body 8 at the end of the tool 6, and the mounting body 8 is formed with pin holes 47 on both axial sides of the claw fitting hole 9. Also in this case, the claw 3 on the claw shaft 2 side and the extended claw shaft 1
Since the phase in the circumferential direction of the claw shaft 2 is different from that of the claw 3 on the 7 side, the linear member 7 is arranged in a state of being inclined with respect to the claw shaft 2. The claw 3 on the side of the claw shaft 2 on which the extension wrap prevention tool 27 is mounted is
The claw 3 on the most free end side may be used, but a claw shaft 2 center side may be selected further than that, and a dedicated mounting without using the mounting body 8 at the end of the wraparound prevention tool 6 as well. A body 8 may be provided.

FIG. 15 shows a first example of a grass cutting member which also serves to prevent grass winding. In order to support the drive claw shaft 35 via a bearing, a bulging mounting portion 26 is formed in the lower portion of the transmission case 22A, and the mounting portion of the inclined claw shaft supporting member 36 is attached to the outer surface of the mounting portion 26. 36a is fixed via a bolt 56. The inclined pawl shaft 15 is supported by the tubular portion 36b of the inclined pawl shaft support member 36. Conventionally, the mounting portion 36a of the inclined pawl shaft support member 36 has two side surfaces.
There is a step (shown in FIG. 1), and the step surface is bolt 55.
The seat surface of the bolt 56 is formed as the bottom of the recess, and the step is removed from the side surface of the inclined pawl shaft support member 36, and the outer peripheral surface of the mounting portion 36a of the inclined pawl shaft support member 36 is formed. It is formed in a circular shape that is substantially concentric with the tubular portion 36b.

A grass cutting member 18 is attached to the inclined claw bracket 4 for mounting the inclined claw 3. The grass cutting member 18 is mounted by using the mounting pin 41 of the slanting claw 3, and the mounting portion 18a fitted to the mounting pin 41 and the slanting claw shaft 15 projecting substantially parallel to the slanting claw shaft 15 and tilting. The pawl shaft support member 36 has a cut portion 18b that overlaps the outer peripheral surface of the mounting portion 36a. This grass cutting member 18 is shown in the side view in FIG.
b is close to the outer peripheral surface of the mounting portion 36a of the inclined pawl shaft support member 36, is inclined with respect to the radial direction of the inclined pawl shaft 15, and the inner diameter rotates before the outer diameter, and the mounting portion Eliminate grass that tends to wind around the outer peripheral surface of 36a.

16 and 17 show a second example of the grass cutting member, which has an auxiliary cutting portion 18c protruding from the mounting portion 18a of the grass cutting member 18 of the first example to the pawl shaft 2 side. The grass is prevented from being wound between the inclined claw shaft 15 and the claw shaft 2. FIG. 18 shows a third example of the grass cutting member, and
The excluding portion 18d that protrudes from the radially outer edge of the cut portion 18b of the grass cutting member 18 to the side opposite to the rotation direction of the inclined pawl shaft 15 is provided. The cutting portion 18b of the grass cutting member 18 is the inclined claw shaft 1
5 is inclined with respect to the radial direction, so that when the inclined pawl shaft 15 is reversed, a stone is caught between the cut portion 18b and the outer peripheral surface of the mounting portion 36a of the inclined pawl shaft support member 36. I try not to let mud enter.

The excluding portion 18d of the third example can also be applied to the grass cutting member 18 of the second example. The grass cutting member 18 of the first to third examples can be formed of a bar material,
Further, it may be directly attached to the outer peripheral surface of the inclined pawl shaft 15 or may be welded to the pawl bracket 4 or the inclined pawl shaft 15. Figure 20
Shows a side drive type rotary tiller 1B,
The wound weed removing device of the first embodiment can be applied to this rotary cultivator 1B in substantially the same manner as the center drive type rotary cultivator 1A.

That is, the gear case 32 having the input shaft 31
From the left and right, the support arm 33 is projected, the left support arm 33 is fitted with the transmission case 22B, and the right support arm 33 is fitted with the side frame 23.
B and the side frame 23 mount the tilling cover 34 and support the pawl shaft 2. One end of the pawl shaft 2 is attached to the cultivator frame 2
1B is supported by a transmission case 22B that makes it possible to transmit power, and the other end of the pawl shaft 2 is rotatably supported by a side frame 23 that makes up the cultivator frame 21B. A large number of claws 3 are mounted at intervals in the direction via claw brackets 4, and another claw 3 is present on the line connecting the claws 3 at the outermost ends of the claw shaft 2. 3, a substantially straight wrapping preventive tool 6 is arranged between the claw 3 arranged inwardly close to the claw 3 and the claw 3 at the other end or the claw 3 arranged inwardly close to the claw 3. .

However, since the inclined pawl shaft 15 does not exist, the winding prevention extension 11 overlaps the bearing 58,
Since the connecting structure of the extension claw shaft 17 is different, it is difficult to extend the winding preventive tool 6. Both ends of the claw shaft 2 are bearing portions 58.
It is supported by the transmission case 22B and the side frame 23 via a through hole, and a specially shaped claw is used for the claws 3 at the outermost ends of the claw shaft 2 so that residual plowing does not occur at the position of the bearing portion 58. There is. On the side surface of the pawl shaft 2 of the bearing portion 58, a pest control body 59 for removing the winding of grass is provided.

In the control body 59A of the first example shown in FIG. 21, the middle part of the disk is cut and raised in an arc shape in side view to form a tooth portion 60A having a substantially triangular shape in front view. Since the amount of protrusion of the claw shaft 2 is gradually increased in the rotation direction, the grass about to be wound around the end of the claw shaft 2 is cut, and the claw shaft 2 is also cut.
It is moved to the center side and is removed by the wrap preventive tool 6 on the pawl shaft 2. A second example of the insect control body 59B shown in FIGS. 22 and 23 has a tooth portion 60B formed by fixing a substantially L-shaped member to a disc, and the tooth portion 60B has a claw shaft as in the first example. The grass to be wrapped around the end of 2 is cut or moved to the center side of the claw shaft 2 and can be removed by the wrap prevention device 6 on the claw shaft 2.

FIG. 23 also shows an example of an anti-winding device having a relay mounting body. The claw shaft 2 of the side drive type rotary cultivator 1B is longer than that of the center drive type rotary cultivator 1A and has a claw. Since the number of 3 is large, it may be preferable to provide the relay mounting body 62 at the intermediate point. The relay mounting body 62 has one or more pin holes 47 on both right and left sides of the claw fitting hole 9, and the mounting body 8 of the transmission case 22B.
And the mounting member 8 of the side frame 23 via the linear member 7
And the linear member 7 respectively.

The wrap-around prevention tool 6 has a relay mounting body 6 at a middle portion.
Since it is supported by the claw 3 via 2, the amount of bending of the linear member 7 can be reduced, and the load on the connecting portion between the mounting body 8 and the linear member 7 at the left and right ends can also be reduced. . The relay mounting body 62 has a linear shape of the winding preventive tool 6 which is mounted on the extension claw shaft 17 by connecting the extension claw shaft 17 to the claw shaft 2 of the center drive type rotary cultivator 1A as shown in FIG. When the member 7 is connected to the mounting body 8 of the winding preventive tool 6 mounted on the pawl shaft 2, it can be used for the mounting body 8.

The present invention is not limited to the above embodiment, but can be variously modified. For example, the mounting body 8 of the anti-wrapping tool 6 may be formed by processing a bar material into a round shape or by welding a round bar or a square ring on a linear bar material. It is also possible to provide a support member that slidably fits in the middle of the wraparound preventive tool 6, and engage this support member with the middle claw 3. Although the same attachment body 8 is used at both ends of the wraparound preventive tool 6, various exemplified ones may be combined. Further, although the mounting body 8 is located on the extension of the linear member 7, for example, the connecting piece 45 may be deformed to shift the linear member 7 and the mounting body 8 in the radial direction of the pawl shaft 2. .

A disk is fixed to one end or both ends of the claw shaft 2 of the side drive type rotary cultivator 1B.
It is also possible to attach the mounting bracket 16 shown in FIG. 2 and connect one end or both ends of the anti-wrapping tool 6.

[0045]

According to the present invention described in detail above, the winding preventive tool 6 can be provided in a substantially straight line without being obstructed by the claws 3 and the grass to be wound around the claw shaft 2 can be more reliably formed. To eliminate.

[Brief description of drawings]

FIG. 1 is a partial cross-sectional front view showing a first embodiment of the present invention.

FIG. 2 is an explanatory diagram showing a claw arrangement on a claw shaft.

FIG. 3 is a side view showing an example of an arrangement of claw brackets on a claw shaft.

FIG. 4 is a perspective view showing a first example of a wraparound preventive tool.

FIG. 5 is a perspective view showing a second example of the wrapping prevention tool.

FIG. 6 is a perspective view showing a third example of a wrapping prevention tool.

FIG. 7 is a perspective view showing a fourth example of the anti-wrapping tool.

FIG. 8 is a front view showing a fifth example of the anti-wrap tool.

FIG. 9 is a front view showing a second embodiment of the present invention.

FIG. 10 is an enlarged view of a main part of the second embodiment.

FIG. 11 is a side view showing a first example of a mounting bracket and an extension pawl shaft.

FIG. 12 is a side view showing a second example of a mounting bracket and an extension pawl shaft.

FIG. 13 is a side view showing an extension wrap preventive tool.

FIG. 14 is a side view showing an extension pawl shaft.

FIG. 15 is a partially sectional front view showing a first example of the grass cutting member.

FIG. 16 is a partially sectional front view showing a second example of the grass cutting member.

FIG. 17 is a perspective view of a grass cutting member of a second example.

FIG. 18 is a perspective view of a grass cutting member of a third example.

FIG. 19 is an overall rear view of the center drive type rotary cultivator.

FIG. 20 is an overall rear view of a side drive type rotary cultivator.

FIG. 21 is a perspective view showing a first example of a grass cutting member of a side drive type rotary cultivator.

FIG. 22 is a perspective view showing a second example of a grass cutting member of a side drive type rotary cultivator.

FIG. 23 is a front view showing an example of a wrap prevention tool having a relay mounting body.

[Explanation of symbols]

2 nail axes 3 nails 4 claw bracket 6 Anti-wrapping tool 7 Linear member 8 Wearing body 9 claw fitting hole 10 Linear member connection part (pin hole 47) 11 Anti-wrap extension 14 Cylindrical member 15 Inclined claw shaft 16 mounting bracket 17 Extension claw shaft 18 Grass cutting member 19 Grass wrap prevention unit 21 Cultivator frame 22 transmission case 23 Side frame 26 Attachment 27 Extension wrap prevention device 41 mounting pins

   ─────────────────────────────────────────────────── ─── Continued front page    (72) Inventor Mitsuyoshi Hirata             64 Ishizukitamachi, Sakai City, Osaka Prefecture Kubo Co., Ltd.             Ta Sakai Factory (72) Inventor Takashi Uchida             64 Ishizukitamachi, Sakai City, Osaka Prefecture Kubo Co., Ltd.             Ta Sakai Factory (72) Inventor Kenji Onishi             64 Ishizukitamachi, Sakai City, Osaka Prefecture Kubo Co., Ltd.             Ta Sakai Factory (72) Inventor Naoki Onishi             64 Ishizukitamachi, Sakai City, Osaka Prefecture Kubo Co., Ltd.             Ta Sakai Factory F term (reference) 2B033 AA04 AB01 AB11 AC04 AC05                       BA02 ED08

Claims (9)

[Claims] 1. A plurality of claws are mounted on a rotatable claw shaft at intervals in the axial direction and the circumferential direction via claw brackets, and other claws are provided on a line connecting claws at both ends of the claw shaft. In the existing rotary cultivator, a substantially linear winding is formed between the claw located inwardly close to the one end claw and the claw at the other end or the claw located inwardly close to the claw. A device for removing weeds from a rotary tiller, which is equipped with a preventive device. 2. The winding grass removing device for a rotary cultivator according to claim 1, wherein the winding preventive tool is provided with mounting bodies attached to the claws at both ends of the linear member. 3. The wound grass removing device for a rotary tiller according to claim 2, wherein the attachment body of the winding preventive tool is provided with a plurality of claw fitting holes in a longitudinal direction. 4. The mounting body of the anti-wrapping tool is provided with one or a plurality of linear member connecting portions at a position deviated to one or both from the center in the width direction. The cultivated grass removing device for a rotary cultivator according to 1. 5. The rotary cultivator according to any one of claims 2 to 4, wherein the wrap preventive tool has a wrap preventive extension projecting from a mounting body to a claw side located on a shaft end side. Wrapping grass removal device. 6. The wrapping grass removing device for a rotary cultivator according to claim 5, wherein the wrapping preventing extension of the mounting body has a blade shape or a wing shape. 7. The wound grass removing device for a rotary cultivator according to claim 2, wherein the mounting body has a leading edge in a rotation direction formed in a cutting edge shape. 8. The wrapped grass removing device for a rotary cultivator according to claim 2, wherein a cylindrical member is provided on the linear member so as to be rotatable relative to the linear member. 9. One end of the pawl shaft is supported by a transmission case forming a cultivator frame to enable power transmission, and the other end of the pawl shaft is rotatably supported by a side frame forming a cultivator frame. The wound grass removing device for a rotary cultivator according to any one of claims 1-8.