JPH052967Y2 - - Google Patents

Description

[Detailed description of the invention] (Industrial field of application) The present invention relates to a center drive type forward/reverse rotary device, and the present invention provides forward and reverse rotation by simply exchanging the left and right claws of the claw shaft and the left and right tillage processing claws of the inclined claw shaft. This allows cultivation to be carried out under the same conditions in both cases of reversal.

(Prior art) Remaining tillage processing claws are removably attached to the left and right sides of the transmission case via mounting brackets, and left and right inclined claw shafts are provided that are inclined with respect to the tilling axis. A center drive type rotary device is generally used in which left and right claw shafts protruding left and right outward from an inclined claw shaft are removably mounted concentrically with the tilling shaft.

Conventionally, in such a rotary device, the inclined claw shaft and the claw shaft can be freely switched between forward and reverse rotations, and the remaining tillage processing claw attached to one of the left and right inclined claw shafts rotates when rotating in the forward direction. The claw shaft is attached to the claw shaft side, and the claw shaft that is attached to the left and right inclined claw shaft side during normal rotation is reversed left and right around the vertical axis when rotating in reverse, and is mounted to the other left and right inclined claw shaft side. This allows it to be used for both down-cut and up-cut tillage.

(Problems to be Solved by the Invention) The arrangement of the remaining tillage processing claws on the inclined claw shaft and the tilling claws on the claw shaft should be done in consideration of dynamic balance during tilling, leveling performance, reversing performance, etc. Need to decide.

However, in the conventional rotary device mentioned above,
No consideration has been given to making the pawl arrangement during normal rotation and the pawl arrangement during reverse rotation relatively the same with respect to the rotational direction.

Therefore, even if the pawl arrangement during normal rotation takes into consideration the dynamic balance, etc., there is a problem that the dynamic balance etc. deteriorates during reverse rotation.

Therefore, it is conceivable to replace the inclined claw shaft and the claw shaft by reflecting left and right around the vertical axis while leaving the arrangement attached thereto as is.

However, since the inclined claw shaft is inclined with respect to the tilling axis, the support structure of the inclined claw shaft and the power transmission structure to the inclined claw shaft are complicated, and it is unrealistic to make the inclined claw shaft detachable. It's difficult.

In view of the above, it is an object of the present invention to provide a center drive type forward/reverse rotary device that has a simple structure and is capable of cultivating under the same conditions in both forward and reverse directions.

(Means for Solving the Problems) The feature of the present invention is that the remaining tillage processing claws 11L, 11L', 11 are provided on both the left and right sides of the transmission case 3.
R and 11R' are removably attached via mounting brackets 10L and 10R, and the tilling shaft 4
Right and left inclined pawl shafts 5L, 5R are provided which are inclined to the left and right, and left and right pawl shafts 7L, 7R, to which the tilling pawls 12L, 12R are attached, protrude left and right outward from the angularly inclined pawl shafts 5L, 5R, are connected to the tilling shaft 4. The remaining tillage processing claws are attached concentrically and removably, and are attached to the left and right inclined claw shafts during normal rotation, and are attached to the other left and right inclined claw shafts when reversed. In a forward/reverse rotary device in which a claw shaft attached to an inclined claw shaft side is reversed left and right around a vertical axis when the rotation is reversed and is mounted to the other left and right inclined claw shaft side, residual tillage processing claws 11L, 11L', 11R, 11R', the mounting brackets 10
L, 10R are arranged with respect to the left and right inclined claw shafts 5L, 5R, and the remaining tillage processing claws 11L, 11L', 11R, 11
The tilling claw shafts 7L, 7R are installed relative to the inclined claw shafts 5L, 5R so that the relative arrangement of the tilling claws 12L, 12R with respect to R' is the same in the direction of rotation during forward rotation and reverse rotation. The point is that positioning means is provided.

(Example) Hereinafter, the present invention will be described in detail with reference to the illustrated embodiment. Figs. 1 and 2 show a forward/reverse rotary device attached to the rear of a tractor via a three-point link mechanism, and 1 is for input. The gear case has support arms 2 on the left and right sides, and a transmission case 3 extending downward is integrally provided with the gear case 1.

A tilling shaft 4 is inserted and supported in the lateral direction at the lower end of the transmission case 3, and inclined pawl shafts 5L, which are interlocked with the tilling shaft 4 and inclined with respect to the tilling shaft 4, are provided on both sides of the lower end.
5R is installed. The tilling shaft 4 is the transmission case 3
It is interlocked and connected to a transmission mechanism inside the gear case 1 via a chain transmission mechanism consisting of a sprocket 6 and the like inside so as to be able to freely switch between forward and reverse directions.

At both left and right ends of the tilling shaft 4, there are inclined claw shafts 5L and 5R.
A pair of left and right pawl shafts 7L, 7R that protrude further outward and are concentric with the tilling shaft 4 are attached to the mounting bolts 8L, 8.
It is removably attached by R. Both claw shafts 7L, 7R are attached to the tilling shaft 4 in a left-right and left-right rotation manner during forward and reverse rotation. In addition, each claw shaft 7
The inner ends of L and 7R are positioned by keys 9L and 9R, and in this embodiment, each key 9L and 9R
are located at points symmetrical to each other with respect to the center of the tilling shaft 4. As a result, when each of the pawl shafts 7L, 7R is exchanged left and right, it rotates 180° around the pawl shaft and is also reversed 180° around the vertical axis. Each claw shaft 7L, 7R has a large number of tilling claws 12L, 12R attached to a mounting bracket 13.
It is attached via L and 13R.

As shown in FIG. 3, each of the inclined claw shafts 5L, 5R has three mounting brackets 10L, 5R, respectively.
10R are fixedly installed at equal intervals in the circumferential direction, and each of the mounting brackets 10L, 10R has residual tillage processing claws 11L, 11R including one deformed claw 11L', 11R', respectively.
is removably attached with bolts, etc. These residual tillage processing claws 11L, 11L', 11R,
11R' is attached to one inclined pawl shaft during forward rotation, and to the other inclined pawl shaft during reverse rotation.

The arrangement of the mounting brackets 10L, 10R with respect to the left and right inclined claw shafts 5L, 5R is such that the remaining tillage processing claws 11L, 11L', 11R, 1 during forward rotation are
The relative arrangement of 1R' and the relative arrangement of remaining tillage processing claws 11L, 11L', 11R, and 11R' at the time of reverse rotation are determined to be equal.

In this embodiment, during normal rotation, the arrangement is as shown in FIGS. 4 and 8, and during reverse rotation, the arrangement is as shown in FIGS. 5 and 9. The arrows in the figure indicate the rotation direction, the numbers from 0° to 360° are the central angles with respect to the center of the nail axis with one point as a reference, and the symbols a to f attached to the end of the drawing code of the residual tillage treatment nail are This is to clarify the position of the residual plowing claw during normal rotation and reverse rotation. In other words, the residual tillage processing claw attached to one of the inclined claw shafts during normal rotation,
When rotating in reverse, the relative position remains the same as when rotating in the normal direction, while rotating 180° around the pawl axis.
It is attached to the other inclined claw shaft at the same position as if it had been rotated 180 degrees around the vertical axis. Therefore, as mentioned above, each pawl shaft 7L, 7R is rotated 180 degrees around the pawl axis during forward rotation and when rotating in reverse, and also around the vertical axis.
If you turn it 180 degrees and swap left and right, the remaining tillage processing claw 11
Tilling claw 12 for L, 11L', 11R, 11R'
The relative arrangement of L and 12R is the same during forward rotation and reverse rotation.

As a result, the remaining tillage processing claws 11L, 11L', 11
R, 11R' and the tilling claws 12L, 12R are arranged as shown in Fig. 4 during normal rotation, and as shown in Fig. 5 during reverse rotation, and the relative arrangement of the tilling claws 12L and 12R is as shown in Fig. 5 during forward rotation and in reverse rotation. On the other hand, it is possible to cultivate with the same dynamic balance, leveling performance, and reversing performance during forward and reverse rotation.

14 is a main cover, a pair of side covers 15 are attached to both left and right ends, and a rear cover 16 is attached to the rear end, and this main cover 14 is attached to a pair of left and right mounting plates 1.
7 to a flange 18 at the outer end of each support arm 2. That is, each mounting plate 17 is connected to the main cover 14 via the vibration isolation structure 19 at both the front and rear ends of the lower end.
It is attached to a pair of front and rear brackets 20 on the upper surface with bolts 21, and the upper end side has bolt holes corresponding to the three bolt holes formed in the flange 18 of the support arm 2, and the support arm 2 is inserted into the bolt holes. It is fastened to the flange 18 with bolts 22. 23 is a gauge wheel, 24 is a gauge wheel support frame, 2
5 is a plowing depth adjustment mechanism, and 26 is a lowering mechanism for the rear cover 16.

Next, the effect will be explained. The solid line in Figure 1 is the tillage axis 4.
This shows the state at the time of down cutting performed by rotating in the normal direction (arrow a), and at this time, the remaining tillage processing claws 11L, 11R on the inclined claw shafts 5L, 5R, and the tilling claws 12L, 12R on the claw shafts 7L, 7R. The claw arrangement is as shown in FIG. 4, and is designed to provide a predetermined dynamic balance, leveling performance, and reversing performance.

Tilling shaft 4, that is, inclined claw shafts 5L, 5R, and claw shafts 7
When up-cutting is performed by rotating L and 7R in the opposite direction (arrow b), remove the remaining tillage processing claws 11L and 11R of each inclined claw shaft 5L and 5R, and insert them into the left and right opposite inclined claw shafts 5L and 5R as described above. Attach to the mounting brackets 10L and 10R. On the other hand, the left and right claw shafts 7
Remove the claw shafts 7L and 7R, and attach the key 9 to the protruding end on the opposite side of the tilling shaft 4 as described above.
Position and install via L and 9R. Then, the remaining tillage processing claws 11L, 11 on the inclined claw shafts 5L, 5R
The arrangement of the tilling claws 12L and 12R of R and the claw shafts 7L and 7R is as shown in Fig. 5, so when rotated in the direction of arrow b, each claw touches the ground under the same conditions as when rotating normally. This allows the dynamic balance to be the same as during normal rotation.

Note that when installing the main cover 14, the mounting plate 17 is attached to the bracket 20 on the main cover 14 via the vibration isolation structure 19, and then the mounting plate 1 is attached to the bracket 20 on the main cover 14.
7 is fastened to the flange 18 with bolts 22. In this way, the work is easier than in the case where the mounting plate 17 is fixed to the support arm 2 side and the mounting plate 17 is attached to the bracket 20 via the vibration isolating structure 19. Even if there is a lateral misalignment between the flange 18 and the flange 18,
Easy to assemble.

Furthermore, if the standard attachment part 27 and the deep-cultivation attachment part 28 are provided above and below on the mounting plate 17 as shown in FIG. The main cover 14 can be easily adjusted up and down depending on when it is installed.

In the above embodiment, the rotation is made by 180° with respect to the center of the pawl axis during forward rotation and reverse rotation, but rotations other than 180° may be used as long as the same conditions are obtained.

(Effects of the invention) According to the invention, since the relative arrangement of each pawl is the same in both forward and reverse rotations, the same dynamic balance, leveling performance, and reversal performance can always be obtained.

In addition, since it is only necessary to change the left and right left tillage processing claws and the left and right claw shafts, there is no need to replace the inclined claw shafts left and right when changing forward/reverse rotation, and the dynamic balance can be maintained in a constant and good condition with a simple reassembly work. can be maintained.

[Brief explanation of the drawing]

Fig. 1 is a sectional view showing one embodiment of the present invention;
The figure is a broken rear view of the same, Fig. 3 is a side view showing the arrangement of the mounting bracket for the remaining tillage processing claws, Fig. 4 is a developed view of the claw arrangement during forward rotation, and Fig. 5 is a development view of the claw arrangement during reverse rotation. Developed view, Figure 6 is a side view showing another cover attachment part,
FIG. 7 is a schematic rear view of the same, FIG. 8 is a side view showing the arrangement of the remaining tillage processing claws during normal rotation, and FIG. 9 is a side view showing the arrangement of the remaining tillage processing claws during reverse rotation. 3...Transmission case, 4...Plowing shaft, 5L, 5R
...Incline claw shaft, 7L, 7R...Claw shaft, 10L, 1
0R...Mounting bracket, 11L, 11R...Remaining tillage processing claws, 12L, 12R...Tilling claws.

Claims (1)

[Scope of utility model registration request] Remaining tillage processing claws 11 are provided on both left and right sides of the transmission case 3.
L, 11L', 11R, 11R' are mounting brackets 1
A left and right inclined claw shaft 5 is detachably attached via 0L and 10R and is inclined with respect to the tilling shaft 4.
The left and right claw shafts 7L and 7R, to which the tilling claws 12L and 12R are attached, and which protrude left and right outward from the respective inclined claw shafts 5L and 5R, are connected to the tilling shaft 4.
The remaining tillage processing claws are detachably attached concentrically with the machine, and are attached to one of the left and right inclined claw shafts during normal rotation, and are mounted to the other left and right inclined claw shafts during reverse rotation.
In a forward/reverse rotation rotary device, the claw shaft attached to one of the left and right inclined claw shafts during forward rotation is reversed left and right around the vertical axis during reverse rotation, and is mounted to the other left and right inclined claw shaft side. , 11L', 11R,
11R' The mounting brackets 10L and 10R are attached to the left and right inclined claw shafts 5 so that the relative arrangement of the two parts can be made equal in the direction of rotation during normal rotation and reverse rotation.
The remaining tillage processing claws 11L, 1 are arranged for L, 5R.
Tilling claws 12L, 1 for 1L', 11R, 11R'
The inclined claw shafts 5L, 5 are arranged so that the relative arrangement of the shafts 2R is the same in the direction of rotation during forward rotation and reverse rotation.
A forward/reverse rotary device characterized by being provided with means for positioning the mounting position of the tilling claw shafts 7L, 7R relative to R.