JP2512660Y2 - Rotary working section on tiller - Google Patents

Description

[Detailed description of the device]

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a rotary working unit in a cultivator, and more particularly to a drive structure for the rotary working unit.

[0002]

2. Description of the Related Art In the case of a general cultivator, the rotary rotation direction of a rotary working portion is a single rotation direction of forward rotation or reverse rotation, but in the case of only forward rotation, the front wheel of the machine body is at the rear portion in the field. It will be pushed forward (dashing) due to the rotation of the rotary, but in order to prevent it from being pushed forward, a large share of the load is placed on the front wheels, and the center of gravity of the body or the front so as not to lose the rotary reaction force of the plowing. We are dealing with such things as weights. In addition, the power sprocket on the cultivator body side
Engage the chain between the sprocket and the sprocket.
In addition, the sprout fitted on the intermediate shaft parallel to the tilling shaft.
One is to engage the ket with the chain on the inner circumference side.
On the other hand, the tiller shaft is equipped with a forward rotating tiller claw that is driven by the chain.
Attached coaxially with the reverse rotating tillage claw driven by the intermediate shaft
A so-called single-axis forward / reverse type cultivator with a different structure was proposed.
(Japanese Patent Publication No. 46-39041).

[0003]

The present invention is to provide a However, the former slave
According to the conventional technique, even if the above countermeasure is used to prevent the dashing of the cultivator, the weight of the vehicle body becomes too large and the dashing cannot be prevented. For this reason, a means is adopted in which each of the two independent axes of the rotary system is responsible for either normal rotation or reverse rotation, and the dashing is offset by the rotation of the claws implanted in each axis (for example, Kaisho 50-1
No. 34801) cannot be used for a small and light field cultivator because not only the number of parts increases and the structure becomes complicated, but also the longitudinal length of the machine body becomes long. In addition, the latter prior art described above
According to the above, all the sprockets are provided on the inner circumference side of the chain.
Therefore, the wrap angle of the chain on the sprocket is large.
I could not hold it tightly, and the chain could be
If it pulsates, it causes a so-called “tooth jump” and sprocket
There is a problem that the drive force transmission to the drive becomes unstable.
It was

The present invention has been made in order to solve the problems of the prior art as described above, and its purpose is to cultivate a claw.
It is possible to drive both forward and reverse rotation of the
It has excellent slashing properties and can be downsized and lightweight.
The plowing is excellent and stable in the drive transmission of the chain.
The purpose is to provide the rotary working part of the machine with a simple structure .

[0005]

In order to achieve the above object, the present invention according to claim 1 is connected to an engine in a rotary working part of a cultivator for transmitting the power of the engine to a cultivating shaft through a chain. Extends laterally of the tiller
Building the input shaft and the forward rotation tilling claws fitted the input shaft and
And chain for forward rotation, which is I Romp the forward rotation cultivating shaft extending in parallel, and the intermediate shaft rotatably supports the meshing sprocket, extending parallel to the input shaft at the outer circumferential side of the chain, the forward rotation Rotating concentrically and rotatably on the cultivating shaft for reverse rotation
A reverse rotation tilling shaft耘爪is mounted, is characterized in that is composed of a chain for reverse drive that is I Romp in the reverse rotation cultivating shaft及<br/> beauty said intermediate shaft . Achieve the same purpose
According to another aspect of the present invention, there is provided an engine operation.
In the tiller, the force is transmitted to the tiller shaft through the chain.
In the tally work section, the power of the engine is cultivated
To the chain that conveys to the chain
And the chain on the outer peripheral side of the
At least one outer circumference that biases the chain toward the inner circumference
Side sprocket and
Forward rotation of one of the sprockets on the driven side of the rocket
Interlockingly connected to the cultivating shaft for use, and the other one interlocking to the cultivating shaft for reversing
It is characterized by being connected.

[0006]

SUMMARY OF] According to the invention of claim 1, the driving force from the input shaft from the engine is inputted, the driving force is rotated forward the forward rotation tilling claws by the chain for forward drive, drive reversal Reverse the reversing tillage claw by the chain. As a result, the tilling reaction force due to the forward rotation of the tilling claw for forward rotation is
The reverse rotation of the reversing tillage claws cancels out the
Thing is prevented. Further, according to the configuration of the invention of claim 2,
The outer sprocket that engages the outer periphery of the chain.
The outer sprocket and the adjacent inner sprocket
The wrap angle of the chain with respect to the sprocket is large.
Therefore, tooth jumping of the sprocket is prevented.

[0007]

Embodiments of the present invention will now be described in detail with reference to the drawings.

FIG. 1 is a sectional view of a drive structure which is a main part of a rotary working section of a cultivator according to the present invention. In the figure, 1 is a forward drive chain, 2 is an intermediate shaft, and 3 is an inner shaft. The claw mounting shafts 4 are reverse drive chains.

The forward rotation drive chain 1 composed of an endless chain is connected to an engine 5 (FIG. 4) on the main body of the cultivator, and an input shaft 6 extending in the lateral direction of the cultivator body is provided.
The inner sprocket 8 and 9 respectively provided on the rotary axle 7 extending parallel to the force axis 6 is I Romp.

[0010] Input shaft 6 is bridged freely rolling Kai through the bearing 11 above the transmission case 10. The input shaft 6
The sprocket 8 provided in the sprocket 8 is loosely fitted, and the power transmitted to the input shaft 6 is transmitted to the sprocket 8 via the dog clutch 12 that rotates integrally with the input shaft 6. In addition, the rotary axle (cultivation axis, positive
Diverted cultivating shaft) 7 is bearing 1 below the transmission case 10
3 is through Kai rolling freely laid and the inboard portion projecting outwardly from said heat transfer kinetic case 10 of the rotary axle 7, the shaft for the inner blade attachment (reverse rotation tiller) 3 via a bush 14 A holder 16 to which an outer pawl ( forward rotation plowing pawl) 15 is fixed is attached to the protruding end side of the rotary axle 7.

The inner claw mounting shaft 3 includes a shaft body 17 and an inner claw located outside the shaft body 17.
(Reversing tilling claw) A holder 19 to which 18 is attached, and a case 2 of the bearing 13 inside the shaft body 17.
No. 0, and a cylindrical portion 23 extending integrally so as to be fitted to the outer periphery of the bush 0 via a bush 21 and having a sprocket 22 fixed to the outer periphery thereof.

The intermediate shaft 2 is bushed on the transmission case 10.
It is rotatably installed through the shaft 25, and the intermediate shaft 2
Above, the sprocket that engages with the chain 1 on its outer peripheral side.
24 (outer peripheral side sprocket) is the sprocket 8,
It is fixed at a position substantially on a straight line with 9. And
Each sprocket 26 is fixed to each portion protruding from the heat transfer kinetic case 10 of the intermediate shaft 2 outwards.

As shown in FIG. 3, a reverse drive chain 4 is wound around the sprocket 26 and the sprocket 22 on the inner claw mounting shaft 3 side, respectively. In the figure
As shown, the sprocket 24 on the intermediate shaft 2 is
4 is pressed so as to be biased toward the inner peripheral side thereof.

In FIG. 4, 27 is a main clutch lever,
28 is a tilling clutch lever, 29 is a front weight,
Reference numeral 30 is a traveling wheel, and 31 is a tail wheel.

Next, the operation of the above-mentioned embodiment will be described.

As shown in FIG. 4, when the engine 5 is started and the main clutch lever 27 is set to ON in the field, the power from the engine 5 is input to the input shaft 6.

Subsequently, when the tilling clutch lever 28 is set to ON, the dog clutch 12 meshes with the sprocket 8 in FIG. 1, and the sprocket 8 rotates together with the input shaft 6 in the counterclockwise direction in FIG. The drive chain 1 is driven to rotate the rotary axle 7 counterclockwise via the sprocket 9, and the outer pawl 15 fixed to the rotary axle 7 is normally rotated.

At this time, the central sprocket 24 of the intermediate shaft 2 meshing with the forward rotation drive chain 1 rotates clockwise, and in FIG. 3, each sprocket 26 outside the intermediate shaft 2 also rotates clockwise. By rotating, the reverse drive chain 4 is driven to rotate the inner hook mounting shaft 3 in which the bush 21 is fitted on the rotary axle 7 in the clockwise direction, and the inner hook 18 fixed to the shaft 3 is reversed.

In this manner, the outer tilling claws 15 rotating normally and the inner tilling claws 18 rotating reversely receive the tilling reaction force from the field soil, but the tilling reaction forces are opposite in direction to each other. Because of this, they cancel each other out, and prevent the dashing that occurred in the conventional rotary work that involves only forward rotation. Also,
Conventionally, the heavy front weights and wheel weights provided to prevent such dashing can be omitted.

When the back tillage is performed, the outer tillage claw 15 is reversed and the inner tillage claw 18 is normally rotated, and similarly, dashing is prevented. Further, the normal rotation driving chain 1
The sprocket 24 that meshes with the outer peripheral side of the chain
It's located in a position that biases it inward
Can increase the wrap angle of the sprocket 24 itself
Together with the sprocket 8 and the sprocket 8 adjacent to the sprocket 24
And the wrap angle of the sprocket 9 can be increased.
Wear. This prevents sprocket tooth jumps.
And the drive transmission of the chain 1 can be performed stably.
Becomes Furthermore, reduce the tooth surface pressure of the sprocket.
Will be possible.

[0021]

As described above, in the present invention,
A rotary working unit in cultivator convey the power of the engine to the cultivating shaft through a chain, forward rotation of the input shaft and the forward rotation tilling claws extending transversely of the interlocking in the engine tiller is mounted extending parallel to the input shaft and chain for forward rotation, which is I Romp in cultivating shaft, its said chain
Support the sprocket that meshes on the outer peripheral side and align it with the input shaft.
Reversing tiller concentrically and rotatably mounted on the forward rotating tiller shaft and having a reversing tiller claw attached to the intermediate shaft extending in a row.
A shaft, so characterized in that it consists of a chain for reverse drive that is I Romp in the reverse rotation cultivating shaft and said intermediate shaft, concentrically of the axis, in the forward rotation of the forward rotation tilling claws, reversed the use tilling claws <br/> is rotated in the reverse, tillage can be canceled by the reaction force of the tilling reaction force due to the forward rotation of the forward rotation tilling claws by reverse rotation of the reverse rotation tilling claws, thereby, the front weights and wheel omit weights or their weight can be small, thus, tilling lighter aircraft, aircraft longitudinal length reduction of is possible, besides the chromatic advantage in cost, power of the engine is maximally available work, also a chromatic advantage in that Dasshingu by simply adding a slight modification to the conventional chain case type is prevented. Furthermore, in the chain
An outer peripheral side mesh that meshes with the outer peripheral side and biases the chain toward the inner peripheral side
With the sprocket, the outer sprocket and adjacent
The wrap angle of the chain on the inner sprocket is large
Therefore, it is possible to prevent tooth jumping of the sprocket.
Therefore, the drive transmission of the chain can be stabilized. Ma
Also, the chain wrap around the sprocket is large.
It is possible to reduce the tooth surface pressure of the sprocket
it can.

[Brief description of drawings]

FIG. 1 is a vertical cross-sectional view of a rotary working unit in a cultivator according to the present invention.

FIG. 2 is a sectional view taken along line II-II of FIG.

3 is a sectional view taken along line III-III in FIG.

FIG. 4 is a side view of the entire cultivator according to the present invention.

[Explanation of symbols]

 1 Forward drive chain 2 Intermediate shaft 3 Inner claw mounting shaft(Reversing tiller)  4 Chain for reverse rotation drive 5 Engine 6 Input shaft 7 Rotary axle(Tillage axis, forward rotation tillage axis) 8 sprockets 9 sprockets 15 Outer Claw (Tillage Claw for Normal Rotation) 18 Inner claw (reversing tilling claw)  24 sprockets

Claims (2)

(57) [Scope of utility model registration request] 1. The power of an engine is cultivated through a chain.
In the rotary working part of the tiller that transmits to the shaft ,
An input shaft connected to the engine and extending in the lateral direction of the tiller, and
A forward rotation plowing claw is attached and extends in parallel with the input shaft.
A normal rotation driving chain that is wound around a diverting tiller shaft , and a sprocket that engages with the chain on the outer peripheral side of the chain is pivotally supported .
An intermediate shaft extending parallel to the input shaft, and the forward rotation tilling shaft
It is concentrically and rotatably mounted on the
Rotary working unit in the the reverse rotation cultivating shaft, tiller, characterized in that it is composed of the chain for reverse drive that is I Romp in the reverse rotation cultivating shaft and the intermediate shaft. 2. The power of the engine is cultivated through a chain.
In the rotary working part of the tiller that transmits to the shaft,
In the chain that transmits the power of the engine to the tilling shaft
The multiple sprockets that engage on the circumferential side and the chain
Engage on the outer circumference side and bias the chain to the inner circumference side
And at least one outer sprocket and
Of the inner peripheral side and outer peripheral side sprockets, the driven side
One of the sprockets is linked to the forward rotation tiller, and the other
It is characterized in that one of the
Rotary working unit on the tiller.