JPH0433683Y2 - - Google Patents

Description

[Detailed description of the invention] (a) Industrial application field This invention relates to a drive device for a side drive type two-shaft rotary in which a first rotary and a second rotary can be separated and connected.

(b) Conventional technology A so-called two-shaft rotary is a so-called two-shaft rotary in which a second rotary that rotates in the opposite direction is installed behind a first rotary that rotates in the forward direction.
It has been often used in tilling hard or heavy clay soils because it enhances the tillage and crushing effects on soil.

By the way, in conventional two-shaft rotaries, the first rotary and the second rotary are either fixed types that cannot be separated, or although they can be separated, they were not originally designed for frequent separation, so it is difficult to separate them. It was classified as something that requires a lot of effort.

(c) Problems that the invention aims to solve However, in recent years, plowing work has become more diverse and elaborate, and the reality is that single-shaft rotary and double-shaft rotaries must be used selectively.

In such a case, it would be wasteful to have both a single-axis rotary and a two-axis rotary, so if the two-axis rotary can be easily separated and connected,
It can be said that its usefulness is high.

(d) Means for solving the problem Therefore, this invention proposes a first rotary and a second rotary, each having a first rotary shaft and a second rotary shaft, both of which are forcibly driven, so that they can be separated and connected back and forth. In two-shaft rotaries installed in parallel, the transmission shaft that transmits power to the transmission case that pivotally supports the first rotary shaft is separated and connectable from the middle of the transmission shaft, and the second rotary shaft is pivotally supported by a branch drive mechanism. The above-mentioned problems were solved by branching a part of the power to the sub-transmission shaft that transmits the power to the case, and by installing this branch drive mechanism close to the inner parts of both transmission cases. It is something.

(E) Effect By adopting such a configuration, when the second rotary is separated and connected to the first rotary, in addition to the connection operation, the installation and removal of the transmission system that must be done can be done on each rotary. This means that it can be easily done from the side.

(f) Examples Examples of this invention will be described below with reference to the drawings.

Fig. 1 is a developed sectional view showing the transmission system of the two-shaft rotary according to this invention, Fig. 2 is a partially sectional side view of the main part showing the case where the first rotary and the second rotary are connected, and Fig. 3 is FIG. 2 is an enlarged sectional view, and FIGS. 4 and 5 are a side view and a plan view of the two-shaft rotary.

In the two-shaft rotary, a second rotary 2 is arranged behind a first rotary 1 in parallel.

The structure of the first rotary 1 is that the side plates 3, 3 on both sides are connected by a beam 4 extending in the left-right direction, and the upper part is surrounded by a top plate 5. A first rotary shaft 6 is similarly rotatably supported laterally and horizontally within the space. In this case, if these first rotary shafts 1 and the like are of a so-called side drive type, the first rotary shaft 6 described above is connected to the transmission case 7 provided on the outside of one side plate 3 and the other side plate 3 (strictly In addition, the driving force is transmitted via the transmission case 7. Further, a large number of pawls 8 are radially attached to the first rotary shaft 6.

The same goes for the second rotary, with side plates 9, 9, beam (pipe) 10, top plate 11, second rotary shaft 12,
Each member, such as the transmission case 13, the claw 14, etc., has the same configuration. However, since the second rotary is located at the rear, in addition to this, a sieve plate 15 is installed in the part following the top plate 11, and a rear cover 16 is installed behind it. This rear cover 16 is pushed downward by cover holders 17, 17.

By the way, the first rotary 1 and the second rotary 2 as described above are connected in a separable manner as described below.

That is, FIG. 2 is a partially cross-sectional side view showing a specific example. First, in the middle of the pipe 10 of the second rotary 2, the upper part of the second rotary 2 corresponding to the approximate center of gravity in the left-right direction is movable up and down relative to the second rotary shaft 12 (in other words, the second rotary shaft 12
(can be moved up and down) A vertical adjustment device 18 is provided.

Various types of this vertical adjustment device 18 can be considered, but for example, a threaded inner cylinder 19 formed with a female thread is raised from the pipe 10, and a threaded outer cylinder 20 is slidably fitted onto the threaded inner cylinder 19. In addition, a screw shaft 21 may be rotatably mounted on the screw outer cylinder 20, and this screw shaft 21 may be screwed into the screw inner cylinder 19. Therefore, a handle 22 is fixed to the outer end of the screw shaft 21, and when the handle 22 is turned, the screw inner cylinder 19 (pipe 10) and the screw outer cylinder 20
becomes able to expand and contract relatively.
Note that 23 is a clamp for fixing the screw outer cylinder 20 and the screw inner cylinder 19, and 24 and 24 are gauge wheels provided in front of the first rotary 1 to set the plowing depth thereof.

Next, this vertical adjustment device 18 is connected to the support members 25, 25 extending from the first rotary 1 in this direction.
It is now possible to engage with

There are various engagement structures, but the pins 26, 26 are protruded from both sides of the screw outer cylinder 20, and the pins 26 are attached to the tips of the plate-shaped supporting members 25, 25.
Fitting portions 27, 27 that fit into the pins 6, 26 are formed in advance, and the pins 26, 26 are fitted with the fitting portions 27, 27 so as to scoop up the pins 26, 26 from below.

The above is an engagement structure for simply engaging the first rotary 1 and the second rotary 2, but in addition to this, a fixing structure for firmly fixing both 1 and 2 is also provided.

In other words, the mounting seats 2 are installed at the joint locations on the rear surface of the first rotary 1 and the front surface of the second rotary 2, respectively.
8, 28, 29, 29 are provided, and these mounting seats 28, 28, 29, 29 are connected to appropriate mounting tools 30...
It is made to be fixed by...

As a specific example of this mounting structure, the mounting tool 30...
..., and provide a tap hole (threaded hole) into which the bolt is screwed into one (for example, the second rotary 2 side) mounting seats 28, 28, and the other (first rotary 1 side) mounting seat 28, 28. It is conceivable to provide a bolt hole or the like in 29, 29 through which a bolt is inserted. In addition,
Since the vertical positions of both mounting seats 28, 28, 29, and 29 must be changeable, the bolt holes must be elongated holes or multiple holes arranged vertically. Moreover, if the mounting seats 28, 28, 29, and 29 are made into a U-shape or the like and have a fitting structure in which they fit into each other, as shown in the enlarged plan cross-sectional view of FIG.
It is easy to position left and right when connecting. Considering the convenience of these operations, it can be said that the positions of these mounting seats 28, 28, 29, 29 are also more preferable as they are closer to the ends in plan view.

Furthermore, it is also possible to use bolt holes instead of tap holes and use nuts instead.

Accordingly, when connecting the first rotary 1 and the second rotary 2 in a separated state, first, the stands 31, 31, which are provided on the side plates 9, 9, etc., so as to be able to be freely switched between standing and storing, are set up. In addition to holding the second rotary 2 in an upright position using this and the claws 14, the handle 22 of the vertical adjustment device 18 is turned to move the pins 26, 26 sufficiently upward, and the support member 25 , 25 can engage with it. Next, the first rotary 1 mounted on the tractor 32 is approached from the front, and the hit mechanism is operated to push the support members 25, 25 onto the pins 2.
6, 26. If you do it like this,
Turn the handle 22 of the vertical adjustment device 18 to move the second rotary 2 to a predetermined position. (In this case, turn the handle 22 of the vertical adjustment device 18 to raise the second rotary 2 to a predetermined height). Finally, both mounting seats 28, 28, 29, and 29 are tightened and fixed using the mounting tool 30.

In the side drive type two-shaft rotary having such a configuration, the first rotary 1 is connected to the tractor 32.
For this purpose, a lift hitch mechanism 35 consisting of an upper link 33 and lower links 34, 34 is extended from the tractor 32 and connected to a predetermined connection part of the first rotary 1. It connects them.

By the way, power transmission to the first rotary shaft 6 and the second rotary shaft 12 is configured as shown in the developed cross-sectional view of the transmission system shown in FIG. 1.

First, regarding the first rotary shaft 6, an input transmission case 36 is provided at the center of the beam 4, and a transmission joint 38 is connected to the input shaft 37 of this case.
The PTO power of the tractor 32 is transmitted by. The power transmitted to the input shaft 37 is appropriately decelerated by the deceleration mechanism 39, and the direction is changed by the bevel mechanism 40, and the power is transmitted to the transmission shaft 41 which is inserted through the beam 4 toward the transmission case 7 side can be conveyed to. And this transmission shaft 4
1 is a sprocket and a chain mechanism 42 that are inserted into the transmission case 7 and housed therein.
The signal is transmitted to the first rotary shaft 6 by.

Next, regarding the second rotary shaft 12,
This means that part of the power is transferred from the middle of the transmission shaft 41 (up to the transmission case 7) by the branch drive mechanism 43 to the beam 4 described above and a short predetermined length range on the transmission case 13 side. The signal is then transmitted to an auxiliary transmission shaft 45 in a transmission cylinder 44 installed in parallel.

Note that although the branch drive mechanism 45 is
and auxiliary transmission shaft 45 are both branched by bevel mechanisms 46, 47, and further connected by two butt-shaped connecting shafts 48, 49, and these connecting shafts 48, 49 are connected by a universal joint 50. It is. However, since the relative length of the auxiliary transmission shaft 45 with respect to the transmission shaft 41 changes by adjusting it up and down, the connecting shaft 49 on that side and the universal joint 50 can be expanded and contracted by spline fitting, etc. In addition, when separating the first rotary 1 and the second rotary 2, these connecting shafts 48 and 49 must also be separated, so for example, one connecting shaft 48
The universal joint 50 can be separated by removing the pin 51.

In addition, both connecting shafts 48, 49 and universal joint 50 are connected to housing cylinders 52, 53, respectively.
and a cover 54, and one end of the auxiliary transmission shaft 45 is inserted into the transmission case 13, and is connected to the second rotary shaft by a sprocket and chain mechanism 55, as in the case of the first rotary shaft 6. The signal is transmitted to the rotary shaft 12.

On the other hand, a torque limiter 56 is interposed on the shaft end of the sub-transmission shaft 45 on the opposite side to the transmission case 13.

That is, one bevel gear 57 constituting the bevel mechanism 46 is torque-coupled with a sleeve 58 that is loosely fitted onto the sub-transmission shaft 45, and the aforementioned torque limiter 56 is connected between the sleeve 58 and the sub-transmission shaft 45. It is set up. The torque limiter 56 has a normal structure in which two joining flanges 59 and 60 are pressed together by a disc spring 61, etc., and the strength of the disc spring 61 is adjusted by a nut 62. , whereby the torque to be transmitted can be adjusted.

As described above, the first rotary 1 and the second rotary 2
When separating both mounting seats 28, 2 mentioned above,
8, 29, 29, and loosen the pin 5 of the universal joint 50.
1, the branch drive mechanism 43 can also be divided, so all that is left is to operate the tractor 32 and pull out the support members 25, 25 of the first rotary 1 from the pins 26, 26 of the second rotary 2 (at this time, , it is necessary to set up the stands 31, 31). Furthermore, if you want to connect both 1 and 2, you can do the opposite operation.

(g) Effects of the invention First, in such a side drive type two-shaft rotary, a branch drive mechanism that can be separated and connected from the middle of the transmission shaft 41 that transmits power to the transmission case 7 that pivotally supports the first rotary shaft 6 is provided. 43, a part of the power is branched to the sub-transmission shaft 45 which transmits the power to the transmission case 13 which pivotally supports the second rotary shaft 12, and this branch drive mechanism 43 is moved toward the inside of both the transmission cases 7 and 13. Since the branch drive mechanism 43 is installed close to the rotary parts 1 and 2, the branch drive mechanism 43 can be easily attached and removed from the side of each rotary 1 and 2 when the rotaries 1 and 2 are separated and connected. In particular, when the rotary rotors 1 and 2 become large, if they are located closer to the center, it is difficult to reach them, making it difficult to operate them, but this eliminates this drawback.

Further, the branch drive mechanism 43 is connected to each transmission case 7, 1.
The fact that it is close to 3 means that this and transmission case 7,
The members up to 13 do not need to be short, and as a result, the sub-transmission shaft 45 can be shortened, and it can also be set (integrated) with each transmission case 7, 13, resulting in consolidation of parts. This also reduces assembly man-hours and reduces costs.

Furthermore, the branch drive mechanism 43 is connected to the transmission cases 7 and 1.
By being located inside the second rotary 3, the left and right width of the rotary can be made smaller compared to the conventional structure in which the transmission structure to the second rotary 2 is provided outside the transmission cases 7 and 13, and it can be used when plowing along the ridge or driving on the road. In this case, the branch drive mechanism 43 does not come into contact with any obstacles, thereby protecting them.

[Brief explanation of the drawing]

The drawings show an embodiment of this invention,
Fig. 1 is a developed sectional view showing the transmission system of the two-shaft rotary according to this invention, Fig. 2 is a partially sectional side view of the main part showing the case where the first rotary and the second rotary are connected, and Fig. 3 is - Enlarged sectional view of Fig. 2, No. 4
FIG. 5 and FIG. 5 are a side view and a plan view of the two-shaft rotary. Code, 1...First rotary, 2...Second rotary, 6...First rotary shaft, 7...Transmission case,
12...Second rotary shaft, 13...Transmission case,
41... Transmission shaft, 43... Branch drive mechanism, 45...
...Sub-transmission shaft.

Claims (1)

[Scope of utility model registration request] A first rotary 1 having a first rotary shaft 6 and a second rotary shaft 12, both of which are forcibly driven.
In a two-shaft rotary in which the second rotary 2 and the second rotary 2 are arranged in parallel in the front and back so that they can be separated and connected, the transmission shaft 41 that transmits power to the transmission case 7 that pivotally supports the first rotary shaft 6 can be separated and connected from the middle. an auxiliary transmission shaft 45 that transmits power to the transmission case 13 that pivotally supports the second rotary shaft 12 through a branch drive mechanism 43;
A side drive type two-shaft rotary drive device, characterized in that part of the power is branched to the side drive mechanism 43, and the branch drive mechanism 43 is installed close to the inner portions of the transmission cases 7 and 13.