JPS6233527Y2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to an automatic movement device for controlling the lateral movement of a slide rotary for a tractor.

Generally, when using a tractor slide rotary to till the edge of a furrow, etc., operate the slide clutch lever in advance to move the rotary tillage device laterally to the edge of the furrow to further reduce the remaining tillage at the edge of the furrow. is normal.

However, there are many obstacles at the edge of the ridge, such as standing trees, banks, and boundary piles, and each time the rotary tiller encounters an obstacle such as the one mentioned above, it is necessary to operate the slide clutch lever to avoid these obstacles. Not only does this reduce work efficiency, but if the rotary tiller fails to avoid an obstacle, the rotary tiller may be damaged, which is an extremely difficult problem.

The purpose of this invention is to eliminate the above-mentioned drawbacks of the conventional slide rotary for tractors, and when cultivating along the edge of a ridge or the like, in the event that an obstacle exists, it automatically By sensing this and moving the rotary tiller in the escape direction, and after passing the obstacle, the rotary tiller is automatically moved to the edge of the ridge, which can significantly improve work efficiency and improve the safety of the sliding rotary. The object of the present invention is to provide an automatic rotary moving device that can significantly improve performance.

Hereinafter, the details will be explained based on an embodiment of the present invention shown in FIGS. 1 and 2.

FIG. 1 is a plan view of a slide rotary A for a tractor. In the figure, 1 is a tractor, 2 is a tractor drive wheel, 3 is a rotary cover, 4 is a rotary tilling device, 5 is a tilling claw, and 6 is a rotary shaft. ,
7 is a wheel gauge.

The rotary tilling device 4 is supported at both ends by a transmission case 8 and a rotary support 9, and the transmission case 8 and rotary support 9 are
Further, the central part is connected by a sliding connecting rod 10,
Its upper end includes a bevel gear case 11, a slide case 12, hollow cylinders 13 and 14, and a slide cylinder 15.
They are connected and supported by a slide support device B consisting of an extension tube 16 and the like.

The slide rotary A is attached to the tractor 1 by a known three-point linkage mechanism C, and the PTO
By connecting the shaft 17 to the input shaft 18 protruding from the bevel gear case 11, the rotary shaft 6
The power required to rotate the rotary tiller 4 and slide the rotary tiller 4 is supplied.

Fig. 2 is a sectional view of the main part of the power transmission mechanism of slide rotary A for a tractor, and 1 in the figure.
Reference numeral 8 denotes an input shaft, one end of which projects into the bevel gear case 11, into which a bevel gear 19 is fitted.

Also, inside the bevel gear case 11 is an input shaft 18.
A bevel gear 21 that meshes with the gear 19 is fitted onto the transmission shaft 20 in a direction perpendicular to the transmission shaft 20 .

One end of the transmission shaft 20 protrudes from the side of the bevel gear case 11 and is connected to a transmission joint 22, and the other end of the transmission joint 22 has a rotating shaft 24 for driving a sprocket 23 in the transmission case 8.
are connected. Further, the sprocket 23 is configured to rotationally drive the rotary shaft 6 via a chain 28.

The transmission joint 22 is composed of a spline engagement part 25 that inserts the tip of the transmission shaft 20 and engages with it slidably in the left and right direction, and a pin fixing part 27 that connects the rotating shaft 24 with a pin 26. It is housed inside a hollow cylinder 14 projecting from the bevel gear case 11 and an extension cylinder 16 projecting from the transmission case 8 and slidably inserted into the hollow cylinder 14.

On the other hand, the other end of the transmission cylinder 20 is projected into the slide case 12 of the slide switching device 29 and is pivotally supported, and the tip of a spiral shaft 30 is rotatably attached to the end axis as described later. is supported by

The slide switching device 29 is connected to the slide case 12
and a spiral shaft 30 which is pivotally supported on the side wall of the slide case 12 and whose tip end is loosely fitted into an engagement hole 31 provided at the end axis of the transmission shaft 20, and a spiral shaft 30 that is perpendicular to the spiral shaft 30. Slide case 12
An intermediate shaft 32 fixed to the spiral shaft 30, a dog clutch 33 slidably inserted into the spiral shaft 30, a bevel gear 34 with clutch teeth 34' fitted to the end of the transmission shaft 20, and a bevel gear 34 meshed with the intermediate shaft 34. It is composed of a bevel gear 35 loosely fitted on the shaft 32, a bevel gear 36 with clutch teeth 36' that meshes with the bevel gear 35 and loosely fitted on the spiral shaft 30, a clutch shifter 37, a clutch operation lever 38, etc. By operating the operating lever 38 and engaging the dog clutch 33 with the clutch teeth 34' or with the clutch teeth 36', the direction of rotation of the spiral shaft 30 can be freely switched between forward and reverse directions, or the rotation thereof can be stopped. be done.

A rotary tiller 4 is installed at the tip of the spiral shaft 30 that protrudes from the slide case 12.
A threaded screw 41 corresponding to the stroke required for sliding is formed, and a slide cylinder 4 whose one end is fixed to the rotary support 9 is attached to the threaded screw 41.
2 is screwed in.

A female thread is formed on the inner circumferential surface of the tip end of the slide cylinder 42, and is threaded into the threaded screw 41.
A stepped support 43 that rotatably supports the end of the spiral shaft 30 inserted therein is fixed to the inner part thereof.

44 is a stop pin fixed to the wall surface of the slide cylinder 42, facing the stepped support 43,
It has a structure that engages with this.

Furthermore, a clutch tooth 45 is provided on the distal end surface of the slide cylinder 42, and the clutch tooth 45 is
Clutch teeth 4 of a gear 46 located outside the slide case 12 and fitted to the spiral shaft 30
It is facing 6′.

In addition, the spiral shaft 30 and the slide cylinder body 42 are
It is housed within a hollow cylinder 13 protruding from the slide case 12 and a slide cylinder 15 which is slidably inserted into the hollow cylinder 13 and whose base end is fixed to the rotary support 9.

The power transmitted from the PTO shaft 17 to the input shaft 18 is transmitted through the bevel gears 19 and 21 and the transmission shaft 2.
0, transmitted to the rotating shaft 24 via the transmission joint 22,
The rotary shaft 6 is rotationally driven by the chain 28 .

Next, the clutch operating lever 38 is pushed down in the direction of arrow B, and the dog clutch 33, which is in the neutral state, is slid by the clutch shifter 37 and meshes with the clutch teeth 36' of the bevel gear 36. Then, the spiral shaft 30 rotates in a direction to push out the slide cylinder 42, and the rotary support body 9 is sequentially pushed out in the direction of arrow A. Furthermore, when the clutch operating lever 38 is operated in the direction of the arrow 2, the dog clutch 33 meshes with the clutch teeth 34' of the bevel gear 34, and the spiral shaft 30 rotates in the opposite direction to pull the slide cylinder 42 in the direction of the arrow C. , the rotary tiller 4 also moves in the direction of arrow C.

In addition, as the rotary support body 9 moves in the left-right direction, the slide stop lever 47 also moves, and the stoppers 48 and 49 fixed thereto cause the operating lever 38 to be raised when a predetermined amount of lateral movement is completed. The dog clutch 33 is returned to the neutral state.

In addition, even if the stoppers 48 and 49 do not operate, the stop pin 44 of the slide cylinder 42
Due to the contact between the stepped support member 43 and the clutch teeth 45 and the clutch teeth 46', an overload is applied to the spiral shaft 30 and the dog clutch 33 is automatically disengaged.

Referring to FIG. 3, FIG. 3 is a plan view showing a state in which the automatic moving device D according to the present invention is installed on the slide rotary A. In the figure, 50 is a sensor rod, and a support metal fitting The distal end portion thereof is pivotally supported by a rotary support member 51 so as to be swingable, and the end portion thereof extends toward the front side of the rotary support body 9 . A connecting member 52, for example, one end of a wire is fixed to the tip of the sensor rod 50.
The other end is a lever 38 for operating the slide clutch.
is connected to.

Reference numeral 53 denotes a spring that constantly pulls the operating lever 38 in the direction of the arrow B. Due to the elastic force of the spring 53, the end of the sensor rod 50 is always extended toward the front side of the rotary tiller 4 via the operating lever 38. There is.

Incidentally, the rotary tiller 4 has been moved outward by the entire stroke, that is, toward the ridge side, and the clutch operation lever 38 has been moved to the stopper 4 of the slide stop lever 47.
It is in a state caused by 8.

Next, the operation of the automatic moving device according to the present invention will be explained.

Currently, the tractor 1 is moving the rotary tillage device 4 toward the ridge E side to perform ridge tillage, as shown in FIGS. 1 and 3. In this state, the clutch operating lever 38 is pulled back to the neutral state by the stopper 48 as described above, and the spring 53 is in a stretched state.

Further, the end portion of the sensor rod 50 is located outside the rotary tiller 4 and is swingable. In order to prevent the sensor rod 50 from shaking due to vibration, an appropriate damper holding device 54 is provided.
It is desirable to provide

If there is an obstacle such as a standing tree along the ridge, the advancing sensor rod 50 comes into contact with the standing tree, etc., and the sensor rod 50 is pushed toward the aircraft body.

When the sensor rod 50 is pushed in, the operating lever 38 is pulled down in the direction of arrow D via the connecting member 52, and the rotary tiller 4 moves in the direction of arrow C, that is, in the direction of avoiding obstacles. tractor 1
When the sensor rod 50 and the obstacle move away from each other, the operating lever 38 is pulled back in the direction of the arrow B by the elastic force of the spring 53, and the rotary tiller 4 moves in the direction of the arrow A, that is, in the direction of the ridge.

When the rotary tiller 4 moves toward the furrow by the entire stroke, the stopper 48 pulls back the operating lever 38, the slide clutch becomes neutral, and the rotary tiller 4 stops moving.
That is, the rotary tilling device 4 automatically avoids obstacles and then returns to its original state.

Since the present invention has the above-described configuration, the rotary tilling device 4 can be automatically moved in a direction to avoid obstacles, and when it passes an obstacle, it can be automatically moved to the edge of the ridge. I can do it.

As a result, work efficiency is significantly improved, and
It is also possible to completely prevent the rotary tilling device 4 from being damaged by obstacles.

As mentioned above, the present invention has extremely high practical effects.

[Brief explanation of the drawing]

FIG. 1 is a plan view of a tractor slide rotary equipped with an automatic moving device D according to the present invention. FIG. 2 is a partially omitted sectional view showing the main parts of the slide rotary drive mechanism. FIG. 3 is a plan view of the automatic moving device according to the present invention. A... Tractor slide rotary, D...
Automatic moving device, 4... Rotary tilling device, 38...
...Clutch operation lever, 50...Sensor rod, 52...Connection material, 53...Spring.

Claims (1)

[Scope of utility model registration request] In the slide rotary A for a tractor, a sensor rod 50 is swingably supported at an appropriate location on the machine body, and the end portion of the sensor rod 50 is extended to the front of the outer side of the rotary tilling device 4. The tip part and the sliding clutch operating lever 38 of the rotary tilling device 4 are connected by a connecting member 52, and the clutch operating lever 38 is always held back by a spring 53 on the side where the rotary tilling device 4 moves in the direction of the ridge. Automatic moving device for slide rotary.