JPH0637601Y2 - Biaxial rotary tiller - Google Patents

Description

[Detailed Description of the Invention] (a) Field of Industrial Application The present invention is configured such that a second rotary tiller for crushing soil is provided side by side behind a first rotary tiller for uplifting.
The present invention relates to improvement of a so-called biaxial rotary tiller.

(B) Conventional technology In order to efficiently cultivate a field in a suitable condition for planting crops, that is, in a soil condition in which the lower layer is rough and the upper layer is fine, it is a biaxial shaft with a rotary cultivated field and a rotary crushed field. Since it is more labor-saving and convenient to use a rotary rotary tiller, its goodness has recently been reviewed and, in particular, various improvements have been proposed as a tiller for a tractor (for example, in Japanese Utility Model Sho 60-77302). (See the official gazette).

Thus, the proposed two-shaft rotary tiller is configured by the center drive system for the front tillage rotary and the side drive system for the rear crushing tillage rotary as in the above publication. Alternatively, both the tillage rotary for uplifting and the crushing soil are configured to be installed in a side drive system.

(C) Problems to be solved by the invention As described above, in the existing proposal, the side drive type cultivating tiller for side milling is installed behind the center drive type tilling rotary, or the side drive type is used. Or, it is a two-axis rotary tiller that uses both side rotary drives of crushed soil and side drive system, so in both cases, the outside of the rear end of the cultivated rotary for crushed soil is , A transmission case for supporting the end of the rotary tiller for crushed soil and transmitting power to it is located,
Since it is inevitable that the lower end of the transmission case will enter the cultivated soil and dig a groove, the finished condition of the tillage will be poor, and extra power will be required for the lower end of the transmission case to move through the soil. There were difficulties.

The present invention was carried out for the purpose of eliminating the above-mentioned difficulties in the already proposed one, and was improved so that the plowing trace was flat and the finished condition was good while the required power was reduced compared to the already proposed one. A two-axis rotary tiller is provided.

(D) Means for Solving the Problems That is, according to the present invention, the first rotary tiller (R1) for uplifting is connected to one end of the main beam (1) from the drive case (2). The main beam (1) is provided as a side drive type that is transmitted to the first rotary tiller shaft (3).
Another transmission case (4) is continuously provided at the other end of the first rotary tiller (R) from the inside of the transmission case (4).
The input shaft (6) of the second rotary tiller (R2) of center drive type is interlockingly connected to the output shaft (5) protruding toward the 1) side in a butt shape, and the tiller (R2) is connected. A two-axis rotary tiller which drives the second rotary tiller shaft (7) to cultivate the rearward extension of the transmission case (4) in plan view by the second rotary tiller (R2). It is characterized by being present.

(E) Action In the device of the present invention in which the above technical means is taken, the first rotary tiller (R1) of the side drive type and the second rotary tiller (R2) disposed rearward are the center drive type. Therefore, in the first rotary tiller (R1), the cultivated soil portion which is grooved at the lower end portion of the drive case (2) supporting the end portion of the first rotary tiller shaft (3) and is in a disordered state is also the second rotary tiller. The second rotary tiller shaft (7) of the device (R2) is treated without any residue, and the tiller by the second rotary tiller shaft (7) has a coaxial drive (7) in the center drive type and a transmission case at the shaft end. Since there is no groove, there is no groove excavation by the transmission case, and it is possible to cultivate a good finished state without groove excavation as a whole.

(F) Example Next, a specific example of the present invention will be described with reference to the accompanying drawings.

The main beam (1) of the first rotary tiller (R1) is
The transmission box (10) (11) is continuously connected to both sides of the gear box (9) located at the center or substantially the center of the device in the lateral width direction, and the transmission tube (10) is provided at the outer end of one transmission tube (10). The drive case (2) continuously provided and the support frame (12) continuously provided at the outer end portion of the other transmission cylinder (11) form a side drive type tiller frame, and the drive case (2) The first rotary tiller shaft (3) is laterally supported on the lower end of the support frame (12).

The gearbox (9) has a tractor PTO.
A passive shaft (13) that is linked to the shaft through a universal joint,
A drive shaft (16) fitted with a bevel gear (15) that meshes with the bevel gear (14) of the shaft (13) is rotatably supported, and the drive shaft (16) moves in the transmission cylinder (10). After that, the chain (19) is extended around the sprocket (17) which is extended into the drive case (2) and is fitted into the extended portion and the sprocket (18) of the first rotary tiller shaft (3), The first rotary tillage shaft (3) is forcibly rotated in the downcut direction (arrow A direction).

The side drive type tiller frame formed by the main beam (1), the drive case (2) and the support frame (12) has a lower connecting portion (removably connected to the lower link of the three-point hitch of the tractor). 20) and an upper connecting part (21) that is detachably connected to the top link side, and a beam (23) that can be set up and down by an adjusting mechanism (22) is extended further behind, It is equipped with a gauge (24) for setting the working depth.

Another bevel gear (25) is meshed with the bevel gear (14) of the passive shaft (13) on the opposite side of the bevel gear (15), and the bevel gear (25) is provided in the transmission shaft (11). It is fitted on the shaft end inside the bevel box of 26). Then, one member of the overload preventing transmission joint (8) is splined to the opposite end of the transmission shaft (26) so as to be slidable in the axial direction.

The other member of the transmission joint (8) is fitted and fixed to the outwardly projecting end of the rotary shaft (27) supported by the front end of the transmission case (4) so that the member engages with the one member. However, if the transmission case (4) is attached to the outside of the support frame (12), the transmission shaft (26) and the rotary shaft (27) are interlocked via the transmission joint (8), and the power of the transmission shaft (26) is increased. The torque is transmitted to the rotary shaft (27) within the range of the torque set by the transmission joint (8).

The transmission case (4) is the first rotary tiller (R1).
For transmitting power to a second rotary cultivating shaft (7) of a second rotary cultivating device (R2) integrally or detachably connected to the rear end of the output shaft (5). The chain (3) is inserted between the sprocket (28) fitted to the shaft (5) and the sprocket (29) of the rotary shaft (27).
It accommodates a transmission mechanism that is interlocked and linked by the suspension of (0).

Then, at the outward protruding end of the output shaft (5), the transmission joint (3
1) One member is provided so that the member can be engaged and disengageably linked to a mating member provided at the outer end of the input shaft (6) of the second rotary tiller (R2).

The second rotary tiller (R2) is of the center drive type, and therefore the above-mentioned input shaft (6) is supported by the upper end of the center drive case (32).
Power is transmitted from the shaft (6) to the tilling drive shaft (not shown in the figure) at the lower end of the center drive case (32) by a chain transmission mechanism.

The tilling drive shaft at the lower end of the center drive case (32) is fitted with a tilling treatment tiller tube (33) (33) that is tilted and rotated about a rotation axis that is tilted downward by a predetermined angle with respect to the coaxial axis. Horizontal tillage tubes (34) (34) are detachably attached to the outside of the remaining tillage treatment tillers (33) (33), and these tillage treatment tillers (33) (33) and horizontal tillers ( 34) (34)
To form a second rotary tillage shaft (7), and the second rotary tillage shaft (7) is transmitted by the power transmission case (4) and the center drive case (32) to the upper cut direction (arrow). It is designed to be rotated in the direction (b).

The second rotary tiller shaft (7) has a plowing width corresponding to the dimension between the drive case (2) of the first rotary tiller (R1) and the outer side of the support frame (12) or slightly wider than that. The width is normally set, and in order to obtain such a plowing width, an extended plowing tube mounting seat (at the outer end of the horizontal plowing tubes (34) (34) in the second rotary plowing shaft (7) ( 3
5) (35) is provided, and the extension tillers (36) of arbitrary length can be connected to them, and when the tilling width different from the above-mentioned tillage width is required, the extension tillers ( 3
6) can be attached or detached, or the extension tiller (36) can be exchanged for various lengths to change the tilling width arbitrarily.

In the two-axis rotary tiller of the embodiment, when power is transmitted to the passive shaft (13), the power is transmitted through the bevel gear (15), the drive shaft (16) and the chain transmission mechanism in the drive case (2). 1 Being transmitted to the rotary tiller shaft (3) to rotate the coaxial shaft (3) in the down-cut direction, at the same time, the bevel gear bevel gear (25) to the transmission shaft (26), the transmission joint (8), and the transmission case (4) It is also transmitted to the second rotary tillage shaft (7) via the chain transmission mechanism and the chain transmission mechanism in the center drive case (32) to rotate the coaxial shaft (7) in the upper cut direction, and thus both the tillage shafts (3). ) (7) The biaxial tillage work is performed, and when the biaxial tillage work is performed, the first rotary tiller (R1) is used.
Although the lower end of the drive case (2) of the drive unit comes into contact with or enters the cultivated soil to dig a groove, the groove is formed when the plowing action of the subsequent second rotary tiller shaft (7) affects the cultivated soil. It will be erased cleanly, and the finished product will be in a good condition when the cultivation is completed.

Then, during the plowing work, for example, stone trapping etc. occurs and the second
If there is an overload on the rotary tiller shaft (7), the overload causes idling at the meshing part of the transmission joint (8), and the transmission to the second rotary tiller shaft (7) is temporarily cut off. In this state, damage to the device is avoided, and after removing the overload, the connection state is restored and the second rotary tiller shaft (7) is activated.

In the embodiment, the first rotary tillage shaft (3) and the second rotary tillage shaft (7) are always operated in a predetermined rotational direction at a constant related speed. For example, a speed change mechanism may be incorporated at an appropriate position of the transmission system to both shafts (3) and (7) so that the speeds of both shafts (3) and (7) can be changed appropriately, or the speed can be positive during the transmission system. Incorporating a reversing mechanism to rotate both shafts (3) and (7) in the same direction, or switch to a state in which the first rotary tiller shaft (3) rotates at an upper cut and the second rotary tiller shaft (7) rotates at a downcut. In some cases, it may be configured to be able to.

(G) Effect of the Invention As described above, according to the present invention, the first rotary tiller (R1) is connected to the one end of the main beam (1) from the drive case (2) to the first rotary tiller shaft (R1). 3) The main beam (1) is provided in a side drive type that is transmitted to
Another transmission case (4) is continuously provided at the other end of the first rotary tiller (R) from the inside of the transmission case (4).
The input shaft (6) of the second rotary tiller (R2) of center drive type is interlockingly connected to the output shaft (5) protruding toward the 1) side in a butt shape, and the tiller (R2) is connected. A two-axis rotary tiller which drives the second rotary tiller shaft (7) to cultivate the rearward extension of the transmission case (4) in plan view by the second rotary tiller (R2). Therefore, the disadvantage of the conventional device, that is, the problem that the transmission case forms a groove in the tillage and the finish is not good, is solved, and there is an advantage that a clean biaxial tillage work can be performed in the study.

[Brief description of drawings]

The drawings show one embodiment of the present invention. FIG. 1 is a developed plan view showing a transmission structure of the apparatus, and FIG. 2 is an overall side view of the apparatus. (R1) …… First rotary tiller (R2) …… Second rotary tiller (1) …… Main beam, (2) …… Drive case (3) …… First rotary tiller, (4)… … Transmission case (5) …… Output shaft, (6) …… Input shaft (7) …… Second rotary tiller shaft (8) …… Overload preventive transmission joint

Claims (1)

[Scope of utility model registration request] 1. A first rotary tiller (R1) is provided as a side drive type that is transmitted from a drive case (2) connected to one end of a main beam (1) to a first rotary tiller shaft (3). , Another transmission case (4) is connected to the other end of the main beam (1), and an output projecting from the inside of the transmission case (4) toward the first rotary tiller (R1) side The input shaft (6) of the second rotary tiller (R2) of center drive type is interlockingly connected to the shaft (5) in a butt shape, and the second rotary tiller shaft (7) of the tiller (R2) is connected. And a rear extension of the transmission case (4) is cultivated by the second rotary cultivator (R2) in plan view.