JPS631B2 - - Google Patents

Description

[Detailed Description of the Invention] This invention changes the direction of rotation of the tiller into either a forward cut (down cut) or a reverse rotation (up cut) by changing the orientation of the rotary tiller body connected to the truck back and forth. This invention relates to a rotary that can be switched between forward and reverse directions.

Downcuts are suitable for normal tillage work as they require less power, and upcuts are used to deeply uproot plants while cutting grass roots, so the structure is such that the direction of rotation of the tiller can be easily switched. It is desirable to do so.

Then, it is possible to switch between forward and reverse rotation by leaving the direction of rotation of the tiller as it is and connecting the rotary in the front and back directions relative to the tractor. This requires a lot of incidental work, such as moving the tractor and attaching and detaching the hitch pins and other related parts, and requires repeated getting on and off the tractor. It's extremely troublesome.

Therefore, in this invention, the rotary is covered with a mounting frame and a cultivating body for attaching the rotary to the tractor via a coupling mechanism, a drive mechanism equipped with an input shaft at the front and rear for rotationally driving the cultivating body, and a cultivating body. By forming the cultivating device body separately from the cultivating device body consisting of various covers, etc., and forming the cultivating body relative to the mounting machine frame so that it can rotate around the vertical axis by releasing the fixing device,
The structure is configured so that the front and back positions can be changed, and while the rotary is connected to the tractor, the rotary is slightly moved upward to separate the tiller from the ground surface, and only the tiller body is changed and rotated around the vertical axis. By being able to change its forward and backward positions, the direction of rotation of the rotary can be switched between forward and reverse, so there is no need to move the tractor or attach or remove hitch pins, and the rotation direction of the rotary can be changed with a few steps. This device has been devised to enable switching operations.

Next, an example of the embodiment will be described. As shown in a side view in FIG. 1 and a perspective view in FIG. The frame 4 and the tilling device main body 5 are formed separately.

That is, the tiller main body 5 has pipe frames 9 and 10 extending left and right from a gear box 8 which projects and supports input shafts 6 and 7 in the front and back, and a drive case 11 and a drive case 11 at both ends of the pipe frames 9 and 10. The upper part of the side frame 12 is fixedly installed, and the tilling claws 13...
A case 1 drives the left and right sides of the cultivating body 14, which is equipped with...
1 and the lower part of the side frame 12, and the cultivating body 14 is covered with an upper cover 15, a rear cover 16, and a front cover 17, and an input shaft is provided in the gear box 8 as a drive mechanism for driving the cultivating body 14. The bevel gears fixedly attached to the pipe frames 6 and 7, respectively, and the bevel gear fixedly attached to the drive shaft installed in the pipe frame 9 are meshed with each other, and the drive shaft and the tiller 1 are connected to each other.
4 through a chain transmission mechanism built into the drive case 11.

In addition, the mounting machine frame 4 has a hit pin 1 on the frame body 18.
The lower rings 21, 2 of the coupling mechanism 3 are pivotally connected to the rear lower left and right sides of the tractor 2.
1 into the hitch pins 19, 19, and attach the mast 20.
Top link 2 and the rear upper part of tractor 2
Left and right lift arms 23, 23 and lower links 21, 21 are connected by lift rods 24, 24, which are connected at 2 and moved up and down by a lift mechanism of the tractor 2.

As shown in FIG. 4, a seat 26 with a vertical shaft 25 erected thereon is fixed to the upper part of the gearbox 8, and a bearing 27 whose outer ring is fitted inside the cylindrical portion 18a of the frame 18... The vertical shaft 25, which is fitted into the inner ring of the bearing 27, is projected from the cylindrical portion 18a, and the presser plate 29 is held down by the nut 28 screwed onto the vertical shaft. The shaft 25, that is, the cultivating device main body 5, is rotatable to the frame 18 and can be suspended from the frame 18.

A fixing device 30 is provided for fixing the cultivating device main body 5 to the frame 18 at each position where the input shaft 7 or 8 is in the front position.
The example shown in the figure is a fitting body 3 that is gate-shaped in side view.
1 and 31 are pivotally attached to brackets 32 and 32 fixed to the left and right sides of the frame body 19 using pins 33 and 33, and the lower parts of the fitting bodies 31 and 31 are aligned in the direction of the arrow A in FIG. The tiller body 5 is pivoted and connected to the frame body 18 as described above, and in the connected state, the body is fitted into the seats 9a and 10a provided on the pipe frames 9 and 10. 31,
31, and then the pins 34, 34 are fitted onto the seat 9a,
Pin hole 31 of fitting bodies 31, 31 below 10a
a, 31a, the pipe frames 9, 10
will be fixed to the fitting bodies 31, 31,
Also, if the fitting bodies 31, 31 are lifted upward,
The tilling device main body 5 is configured to be rotatable around a vertical axis 25.

Further, the fixture 35 illustrated in FIG.
A pin hole 26a is inserted into the seat 26 at a symmetrical position across the
A fixing pin 36 provided with 26b and inserted into the frame 18
is inserted into either one of the pin holes 26a, 26b, and various types of fixing devices can be used to fix the cultivating device main body 5 to the mounting frame 4. The present invention is not limited to the embodiments described above.

The input shaft 6 or 7 is connected to the PTO shaft 37 of the tractor 2 via a universal joint shaft 38, and the rear portions of support rods 39, 39 extending rearward from the pipe frames 9, 10 are connected to the tail wheel. 40, 40, and the support rods 39, 39 can be moved up and down by an adjustment mechanism 41.

As described above, the rotary which can be switched between forward and reverse directions according to the present invention includes a mounting frame 4 and a tiller 1 for mounting the rotary 1 to the tractor 2 via the coupling mechanism 3.
4, and a drive mechanism provided with an input shaft at the front and rear to rotationally drive the tiller 14, and the tiller 14.
The tiller body 14 is formed separately from the tiller body 5 consisting of various covers etc. that cover the tiller body 14, and the tiller body 14 is attached to the mounting machine frame 4.
By releasing the fixing device and making it rotatable around the vertical shaft 26, the structure is configured so that the forward and backward positions can be changed. It is extremely easy to move the tiller body 14 away from the ground surface by performing an upward movement, and then release the fixing device and rotate the tiller body 5 around the vertical axis 25 to change its front and rear positions. Cultivating body 14 of this rotary 1
The direction of rotation can be switched between forward rotation and reverse rotation.

Therefore, according to the present invention, operations such as moving the tractor, attaching and detaching pins of related parts such as hit pins, and connecting positioning operations, which are required for conventional rotaries, can be eliminated, making it extremely easy to operate. Moreover, it is possible to quickly switch between forward and reverse directions.

[Brief explanation of the drawing]

The figures show an embodiment of the present invention, and FIG. 1 is an overall side view, FIG. 2 is a perspective view in a separated state, FIG. A vertical cross-sectional rear view of the main part in Figure 2,
FIG. 5 is a longitudinal sectional side view of the main part in FIG. 1, and FIG. 6 is a longitudinal sectional rear view of the main part showing another embodiment of the fixture. Code explanation, 1...Rotary, 2...Tractor,
3... Connection mechanism, 4... Mounting machine frame, 5... Tilling device main body, 6, 7... Input shaft, 8... Gearbox, 9, 10... Pipe frame, 9a, 10
a, 26... Seat, 11... Drive case, 12...
Side frame, 13... Cultivating claw, 14... Cultivating body, 15... Upper cover, 16... Rear cover,
17...Front cover, 18...Frame body, 19...
...Hit pin, 20...Mast, 21...Lower link, 22...Top link, 23...Lift arm, 24...Lift rod, 25...Vertical axis,
26a, 26b, 32a...pin hole, 27...bearing, 28...nut, 29...pressing plate, 3
0, 35...Fixing tool, 31...Fitting body, 32...
Bracket, 33, 34...pin, 36...fixed pin, 37...PTO shaft, 38...universal joint shaft,
39... Support rod, 40... Tail wheel, 41... Adjustment mechanism.

Claims (1)

[Claims] 1. From the mounting frame and cultivating body for attaching the rotary to the tractor via a coupling mechanism, the drive mechanism equipped with input shafts at the front and rear to drive the cultivating body in rotation, and various covers that cover the cultivating body, etc. The tiller body is formed separately from the tiller body, and the tiller body is formed so that it can be rotated around the vertical axis by releasing the fixing tool, so that the front and rear positions can be changed. Rotary that can be switched between forward and reverse directions.