JP2566506Y2 - Cultivator - Google Patents

Description

[Detailed description of the invention]

[0001]

[Industrial application field] The present invention is to sown a fertilizer or taro seed potatoes in a field or the like, and then to lay the ridges on the sowing site without moving the seed potatoes. The present invention relates to a two-axis rotary type cultivator to be used.

[0002]

2. Description of the Related Art Conventionally, this kind of cultivator is provided with a transmission case interlocked with the engine at a rear portion of a body on which the engine is mounted, and extends outward on both sides of the transmission case in the body width direction. A pair of drive cases are provided via a transmission shaft, and on the output side of each drive case, a claw shaft having a plurality of rotary claws and extending inward in the machine width direction is respectively protruded and supported in a cantilever manner, A ridge space is formed in the center of the body in the width direction on the inner free end side of each of the claw shafts. Then, before performing the ridge work, sowing or fertilizing a seed potato such as taro in the field, so that the sowing portion of the seed potatoes and the ridge space for the cultivator are opposed to each other, By performing the tilling operation by the rotary claws while running the airframe, the ridges are laid at the sowing sites of the seed potatoes without moving the seed potatoes or fertilizers.

[0003]

However, in the above-described cultivator, the claw shafts extending inward in the machine body width direction are supported on the output side of the respective drive cases in a cantilever manner. Since the space for ridges is secured at the center in the width direction of the body on the inner free end side, the supporting strength of each of the claw shafts is structurally weak. It is necessary to increase the rigidity of the shaft and each of the drive cases, thereby increasing the cost.

The present invention has been made in view of the above problems, and has as its object to increase the support strength of each of the claw shafts with a simple structure without increasing the cost. Is to provide.

[0005]

In order to achieve the above-mentioned object, the present invention provides a structure in which a rear part of an airframe 1 equipped with an engine 2 is provided.
A transmission case 7 interlocked with the engine 2 is provided, and a pair of drive cases 10 and 10 are provided on both sides in the body width direction of the transmission case 7 via transmission shafts 9 and 9 extending outward in the body width direction.
A claw shaft 1 having a rotary claw 11 on the output side of these drive cases 10 and 10 and extending inward in the machine width direction.
In the tiller having the ridges 2 and 12 projecting from each other to form a ridge space at the center of the fuselage in the width direction, the ridge space is avoided at the rear of the fuselage 1 at the front end. Support portions 13a and 13 for supporting the protruding side shaft ends of the claw shafts 12
a, and the above-mentioned claw shafts 12 are attached.
Is supported by the drive case 10 and the gate-shaped frame 13 in a doubly supported manner.

[0006]

In the above-described cultivator, the portal frame 13 is provided on the rear side of the body 1, and the drive cases 10, 10 are mounted on the support portions 13a, 13a of the portal frame 13, respectively.
The inner free ends of the claw shafts 12, 12 extending inward in the machine width direction are supported from each other, so that the claw shafts 12 are supported by the support portions 1 of the drive cases 10 and the portal frame 13.
3a, so that the drive case 10 and the claw shaft 12 are not stiffened as in the related art, thereby increasing the cost.
With a simple configuration in which the portal frame 13 is provided, the supporting strength of each claw shaft 12 can be enhanced. In addition, the gate-shaped frame 13 is provided so as to avoid the space for ridges formed in the center in the width direction of the body 1 on the inner free end side of each of the claw shafts 12, so that the ridges are provided. During the operation, the gate-shaped frame 13 does not move, for example, a taro seed potato or the like, and it is possible to reliably perform the ridge work with the rotary claws 11 of the claw shafts 12 at a sowing site such as the seed potato, In addition, the gate-shaped frame 1
The ridge work can be performed satisfactorily without receiving the resistance of the ridge soil.

[0007]

4 shows a tilling machine shown in FIG. 4 in which an engine 2 is mounted on a front upper portion of a body 1 and a transmission case 3 is provided on a rear side of the body 1 so that a lower portion of the transmission case 3 is provided. Drive wheels 4 linked to the engine 2 on both sides
And a hitch fitting 1a on the rear side of the fuselage 1.
And the rotary device 6 is supported on the hitch fitting 1a via the connecting member 5.

As shown in FIG. 1, the rotary device 6 includes a transmission case 7 extending rearward from the transmission case 3, a transmission box 8 provided at a rear side of the transmission case 7, and the transmission box 8. A pair of drive cases 10, 10 is supported on both sides in the body width direction via transmission shafts 9, 9 extending outward in the body width direction, and a plurality of rotary claws are provided on the lower output side of each of the drive cases 10, 10. 1
1 and a claw shaft 12, 1 extending inward in the machine width direction.
2 are protruded from each other, and a space S for ridges is formed in the center of the body 1 in the width direction on the inner free end side of each claw shaft 12.

A driving sprocket 10 linked to each of the transmission shafts 9 is provided on the upper side inside each of the driving cases 10.
a and a driven sprocket 10b interlocking with each of the pawl shafts 12 is supported on the lower side, and a transmission chain 10c is hung between the sprockets 10a and 10b, so that the transmission box 8 Is transmitted to the respective pawl shafts 12 via the respective transmission shafts 9 and the respective sprockets 10a and 10b and the transmission chains 10c provided in the respective drive cases 10; By rotating each rotary claw 11 of each claw shaft 12, the cultivated soil is gathered on the ridge space S side, and the ridge is formed in the ridge space S.

In the above-described cultivator, as shown in FIG.
3a, 13a, the upper side of each of the supporting portions 13a is integrally connected by a connecting portion 13b to form a portal frame 13, and this portal frame 13 is connected to the connecting portion 13b.
The lower part of the transmission box 8 is connected to the lower part of the transmission box 8 via a support rod 13c and a fixing plate 13d provided on the upper side of the ridge.
And the right and left support portions 13
The inner free ends of the claw shafts 12 are supported at the lower side of the a and 13a, and the claw shafts 12 are supported by the respective drive cases 10 and the respective support portions 13a of the portal frame 13. He supported it.

Further, in the embodiment shown in FIG.
A first shaft 9a supported on both sides of the transmission box 8 in the body width direction, and a second shaft 9a supported on the drive case 10 side.
The shaft 9a and the shaft 9b are divided into two parts, and these shafts 9a and 9b are spline-coupled to each other. The distance between the transmission box 8 and the transmission box 8 can be slidably adjusted in the machine body width direction, and support rods 13e protruding outward are attached to the lower part of each support portion 13a of the portal frame 13, respectively. Each of the support rods 13e is inserted and supported so as to be able to move in and out of the inner free end side of the cylindrical claw shaft 12 supported on the inner side in the machine width direction of each of the drive cases 10. Then, the second cylindrical shaft 9b of each of the transmission shafts 9 is slid in the machine width direction with respect to the first shaft 9a, and each of the claw shafts 12 is moved with respect to a support rod 13e provided on the portal frame 13 side. By sliding in the machine body width direction, the tillage width of the rotary claw 11 provided on each of the claw shafts 12 can be adjusted.

As described above, the portal frame 13 is attached to the lower part of the transmission box 8 of the rotary device 6, and the left and right support portions 13a, 1a of the portal frame 13 are attached.
3a, the inner free ends of the claw shafts 12, 12 extending inward in the machine width direction from the respective drive cases 10, 10 are supported, and the respective claw shafts 12 are connected to the respective drive cases 10 and the portals. By supporting the frame 13 with the supporting portions 13a of the frame 13 in a double-supporting manner, the rigidity of the drive cases 10 and the claw shafts 12 is not increased and the cost is not increased as in the related art. With a very simple configuration in which the portal frame 13 is added to the rotary device 6, the supporting strength of the claw shafts 12 can be enhanced. Also, for example, when sowing and growing taro seed potatoes in a field or the like, sown in a field or the like before laying such seed potatoes, and then sowing the seed potatoes or the like and the ridges. The ridge work by each of the rotary claws 11 is performed while the body 1 is running so that the space portion S is opposed. At the time of such ridge work, the gate-shaped frame 13 includes the claw shafts. Since the attachment is made so as to avoid the ridge space S formed between the twelve 12, the nails are not moved in the portal frame 13 without moving the seed potatoes. The ridge work can be reliably performed by the rotary claw 11 of the shaft 12, and the gantry frame 13 can be satisfactorily ridged without receiving resistance in the ridge soil during the ridge work. be able to.

Further, as described above, the distance between the drive case 10 and the transmission box 8 is slidably adjusted in the machine width direction, and the rotary pawls 1 provided on the pawl shafts 12 are adjusted.
1, the support rods 13e provided on the support portions 13a of the portal frame 13 are slidably inserted and supported on the inner free ends of the claw shafts 12, respectively. Since the pawl shafts 12 are supported by the support portions 13a and the drive cases 10, the power transmission members such as the drive shafts 9, the drive cases 10, and the pawl shafts 12 are provided. Even if the rigidity is not particularly enhanced, the supporting strength of these power transmission members can be enhanced. still,
In FIG. 1, reference numeral 14 denotes a steering handle provided on the upper side of the transmission case 3 so as to face rearward and upward.

Further, as shown in FIGS. 2 and 3, the rotary device 6 of the present invention comprises a plurality of rotary claws 11a which are provided on the inner side in the machine width direction of the respective drive cases 10. A first shaft 12a having
a and a second shaft 12c having a spiral rotary blade 11b supported so as to be able to change the angle in the longitudinal direction of the fuselage via a joint 12b on the inner side of a, and using a portal frame 13 similar to that described above, The connecting portion 13b for connecting the left and right support portions 13a of the gate-shaped frame 13
An operation rod 13f is protruded upward, and the operation rod 13f is inserted through an operation hole 5a provided in the connecting member 5 of the rotary device 6 and extending in the longitudinal direction of the body, and the portal frame 1
3 is attached to the lower side of the connecting member 5 so as to avoid the ridge standing space S, and the inner free ends of the second shafts 12c of the claw shafts 12 are connected to the left and right sides of the portal frame 13. The first and second shafts 12a, 12c are supported by the supporting portions 13a, 13a so as to rotate and swing.
The entirety of the claw shafts 12 constituted by the joints 12b may be supported by the drive cases 10 and the portal frame 13 in a double-supported manner. In the embodiment of FIG. 3, a pair of left and right protruding rods 5b are protruded from both sides of the connecting member 5 in the body width direction, and the distal ends of the protruding rods 5b are connected to the respective drive cases 10. .

In the above configuration, the operating rod 13f of the gate-shaped frame 13 is moved back and forth along the operating hole 5a formed in the connecting member 5 in accordance with soil conditions for performing the ridge work, and the like. The second shaft 12c of each of the claw shafts 12 is moved in the front-rear direction about the joint 12b, and the angle of the second shaft 12c with respect to the first shaft 12a is adjusted in the front-rear direction. While the flow of the plowed soil is made good by the spiral rotary blades 11b provided in the 12c, the ridge work of the soil is performed in an optimum state according to the soil conditions. Further, the portal frame 13 is provided below the connecting member 5, and the left and right support portions 13a of the portal frame 13 and the respective drive cases 10 are connected to the first and second shafts 12a and 12c. By supporting each of the claw shafts 12 b composed of both ends in a two-sided manner, the rotary device 6 has a very simple configuration in which the portal frame 13 is added. It is possible to enhance the supporting strength of the claw shafts 12 while performing the ridge work on the soil in an appropriate state. Further, at the time of the ridge work as described above, since the portal frame 13 is attached so as to avoid the ridge space S formed between the claw shafts 12,
Without moving the seed potatoes or the like in the gate-shaped frame 13, each of the claw shafts 12 is placed at a sowing site of the seed potatoes or the like.
The ridge work can be surely performed by the rotary claw 11.

[0016]

As described above, in the present invention, a transmission case 7 interlocking with the engine 2 is provided at a rear portion of the body 1 on which the engine 2 is mounted, and on both sides of the transmission case 7 in the body width direction, A pair of drive cases 10, 10 are provided via transmission shafts 9, 9 extending outward in the machine body width direction, and each of the drive cases 10, 10 has a rotary claw 11 on the output side and extends inward in the machine body width direction. In a cultivator in which claw shafts 12 and 12 are protrudingly provided to form a space for ridges in the center of the machine body in the width direction, the space for ridges is avoided at the rear of the body 1 and A gate-shaped frame 13 having supporting portions 13a, 13a for supporting the protruding shaft ends of the respective claw shafts 12 is attached to the distal end side, and each of the claw shafts 12 is attached to the drive case 1.
0 and the gate-shaped frame 13 are supported in a double-supported manner, so that the rigidity of the drive cases 10 and the claw shafts 12 is strengthened and the cost is not increased as in the conventional case. With a simple configuration in which the portal frame 13 is provided, the supporting strength of each claw shaft 12 can be enhanced,
In addition, since the portal frame 13 is attached so as to avoid the ridge space formed at the center in the width direction of the body 1 on the inner free end side of each claw shaft 12, the ridge is provided. During the operation, the gate-shaped frame 13 does not move the taro seed potatoes or the like, and it is possible to reliably perform the ridge work with the rotary claws 11 of the claw shafts 12 at the sowing site of the seed potatoes, , The gate-shaped frame 13 during erection work
Can be satisfactorily laid without receiving resistance due to the laid soil.

[Brief description of the drawings]

FIG. 1 is a partially cutaway rear view of a rotary device of a cultivator according to the present invention.

FIG. 2 is a partially cutaway plan view showing another embodiment of the rotary device.

FIG. 3 is a rear view of the embodiment.

FIG. 4 is a side view showing the entire structure of the cultivator.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Body 2 Engine 7 Transmission case 9 Transmission shaft 10 Drive case 11 Rotary claw 12 Claw shaft 13 Portal frame 13a Support part S Space for ridge

Claims (1)

(57) [Scope of request for utility model registration] 1. At the rear of an airframe 1 on which an engine 2 is mounted,
A transmission case 7 interlocked with the engine 2 is provided, and a pair of drive cases 10 and 10 are provided on both sides in the body width direction of the transmission case 7 via transmission shafts 9 and 9 extending outward in the body width direction.
A claw shaft 1 having a rotary claw 11 on the output side of these drive cases 10 and 10 and extending inward in the machine width direction.
A cultivator having two ridges 2 and 12 protruding from each other to form a ridge space at the center of the fuselage in the width direction, wherein the rear of the body 1 avoids the ridge space, and Supporting portions 13a, 13 for supporting the protruding side shaft ends of the respective claw shafts 12 on the distal end side.
a, and the above-mentioned claw shafts 12 are attached.
Is supported by the drive case 10 and the gate-shaped frame 13 in a doubly supported manner.