JPH0444002Y2 - - Google Patents

Description

[Detailed description of the invention] (a) Industrial application field The present invention relates to a rotation regulating structure for a case support in a rotary device.

(b) Conventional technology Conventionally, a rotary device connects the front end of a case support protruding forward from a gear case to the rear end hitch of a tractor in a vertically movable and detachable manner. The middle part of the case support is interlocked with the freely protruding tip of the lift arm, and the rotary inner cylinder, which protrudes orthogonally from the left and right sides of the gear case, has the base ends of the left and right main beams that support the rotary part. At the same time, left and right link flanges each having a front and rear protrusion are fixedly attached to the peripheral surface of each main beam, and the front end is connected to the rear end hitch of the tractor between the tips of the front protrusions of both flanges. It is made by connecting the rear ends of the links.

Then, the rotary device detaches the front end of the rotary link and the front end of the case support from the tractor rear end hitch, detaches the lower end of the lift link from the case support, and detaches the lower end of the lift link from the case support. The equipment is separated from the tractor so that repairs and inspections can be performed.

(c) Problems to be solved by the invention However, in the case of the above-mentioned rotary device, if the case support is disconnected from the tractor, the case support will rotate downward due to its own weight, causing damage to the feet of careless workers. There was a danger.

Therefore, a separate member was provided to restrict the rotation of the case support, but simply restricting the rotation of the case support would not allow the front end of the case support to be connected to the hitch when connecting the rear end of the tractor to the hitch. There was a problem that made it difficult to align.

(d) Means for solving the problem In this invention, a gear case is installed between the base ends of the left and right main beams that support the rotary part so as to be movable up and down, and a case support is provided forward from the gear case. The front end of the case support is removably connected to the rear end hitch of the tractor, and the front ends of the left and right rotary frames are connected to the rear ends of the left and right link flanges that stand up from the base ends of the left and right main beams, respectively. A lift link receiver is installed upright at the front end of the frame so that its rotational position can be adjusted freely, and the base end of the lift link is attached to a lift link pin that protrudes laterally and outwardly from the middle part of the case support. A case support in a rotary device, which is pivotably supported so that the tip of the lift arm can be redirected and connected to the tip of the lift arm, which protrudes from the rear of the tractor so as to be movable up and down from the rear of the tractor, and the lift link receiver. The purpose is to provide a rotation regulating structure.

(E) Action When disconnecting the rotary device from the tractor, remove the front end of the case support from the rear end hitch of the tractor, remove the tip of the lift link from the tip of the lift arm, and attach the tip of the lift link to the lift link receiver. All you have to do is connect it to your body.

Then, when connecting the rotary device to the tractor again, by moving the rotary frame up and down, the frame and case support are integrally connected via the lift link and lift link receiver. The case support moves up and down in conjunction with the frame using the lever principle, and the front end of the case support can be easily aligned with the rear end hitch of the tractor, allowing quick connection between the case support and the hitch. , and can be done reliably.

After this, the tip of the lift link can be transferred from the lift link receiver to the tip of the lift arm and connected.

At this time, the diameter of the rear wheels of the tractor varies depending on the specification, such as for use in rice fields or orchards, so the ground clearance at the front end of the case support changes each time, and the rear wheel diameter of the tractor varies depending on the specification, such as for use in rice fields or orchards. The ground height of the base end of the lift link changes, and the rotation locus of the tip of the lift link changes, but if the rotation position of the lift link receiver is adjusted appropriately, the lift link to the same receiver changes. This allows the ends to be connected.

(F) Effect According to the present invention, the case support and rotary frame can be integrally connected by simply connecting the tip of the lift link that has been disconnected from the tip of the lift arm to the lift link receiver and leaving it in the stored state. Therefore, the work of reconnecting the rotary device to the tractor can be easily performed by moving the rotary frame up and down.

Moreover, the structure is simple, and the rotary device can be connected and
Since each operation at the time of release can be performed smoothly and easily without waste, there is an effect that work efficiency is improved.

Furthermore, since the rotational position of the lift link receiver can be adjusted, even if the rear wheel diameter of the tractor changes according to specifications, the tip of the lift link can be reliably connected to the receiver. There is an effect.

(G) Example The example of the present invention will be explained in detail based on the drawings.
In Fig. 1, A is a rotary device, B is a tractor that pulls the rotary device A, 1 is a tractor rear end hit provided at the rear end of the tractor B, and 2 is an intervening device between the tractor B and the rotary device A. The link mechanism 3 is a rotary part, 4 is a rear cover, 5 is a left main beam, 6 is a drive shaft, 7 is a left link flange, 8 is a case support, and 9 is a plowing depth adjustment part.

Reference numeral 10 shown in FIG. 2 is a gear case, and rotary inner cylinders 11, 11 are protruded from the left and right sides of the case 10 in an orthogonal state. is loosely fitted.

A case support 8 is provided to protrude forward from the front side of the gear case 10, and the case support 8 is movable up and down and can be attached to and detached from the rear end hitch 1 of the tractor via a hitch pin 8a provided at the front end. It is pivotally connected to.

Further, the link flange 7 described above is shown in FIG.
As shown in FIG. 2, the base end is fixed to the left main beam 5, and the front and rear projections 7a,
A right link flange 7, which is similarly formed symmetrically with the left link flange 7, is fixed to the main beam 5, and the rear end of the rotary link 12 is pivoted between the tips of each front protrusion 7a, 7a. Support 13.

The front ends of left and right rotary frames 21, 21 are connected to each rear protrusion 7b, 7b, and
1 and the rear protrusions 7b, 7b support the plowing depth adjustment part 9 upright.

In addition, the link mechanism 2 includes left and right lift arms 15, 15 that protrude from the rear of the tractor so as to be movable up and down.
Left and right lift links 16, 16 are removably interposed between the tip and the center of the left and right sides of the case support 8, and the rotary device A moves up and down in conjunction with the up and down movements of the left and right lift arms 15, 15. The front end of the rotating link 12 is removably connected to the tractor rear end hitch 1 by a pivot 17, and the rotating link 12 allows the rotary device A to move up and down in the vicinity of the plowing surface. is made in a nearly horizontal position.

Further, the lift link 16 is connected to the lift arm 15.
The distal end side connected to the distal end is formed into a forked shape 16a,
The forked portion 16a is detachably connected to the tip of the lift arm 15 by a connecting pin 18.

The base end of the lift link 16 is rotatably supported on the tip of a lift link pin 14 that protrudes laterally and outwardly from the center of the case support 8. The forked portion 16a at the tip of the link 16 is connected to a lift link receiver 19 that stands up from the front end of the left rotary frame 21.

As shown in FIG. 2, the lift link pin 14 includes a pin main body 14a and a stepped small diameter portion 14b at the tip.
The base end of the lift link 16 is rotatably supported on the stepped small diameter portion 14b.
20 is a retaining pin.

In such a configuration, the gist of the present invention lies in the case support 8 rotation regulation structure, which will be described in detail below.

That is, the rotation of the case support 8 can be restricted by connecting the forked portion 16a of the lift link 16 to the above-mentioned lift link receiver 19 from the tip of the lift arm 15.

As shown in FIG. 3, the lift link receiver 19 has an upper receiving portion 19a formed in a narrow plate shape.
and a lower receiving part 19b.
stands vertically above the front end of the left rotary frame 21, and the lower end of the upper receiving part 19a is pivoted to the upper end of the lower receiving part 19b by a pivot pin 22 so as to be rotatable back and forth. The lower receiving part 19 is inserted into the arc-shaped guide hole 26 provided at the lower part of the part 19a.
b A rotation fixing pin 27 protruding from the upper part is inserted, and the pin 27 is configured to adjust the rotational position of the upper receiving part 19a back and forth.

Moreover, a pin hole 23 is provided at the tip of the upper receiving portion 19a.
is provided so that the forked portion 16a of the lift link 16, which is disconnected from the tip of the lift arm 15, can be connected with the connecting pin 18 through the pin hole 23.

Therefore, if the forked portion 16a of the lift link 16 is connected to the lift link receiver 19, the case support 8 and the link flange 7 will be integrally connected by the lift link 16. The rotation of the case support 8 is restricted.

Furthermore, as shown in Figures 4 and 5, the diameter of the rear wheels of the tractor B differs depending on the specifications for use in rice fields, orchards, etc., and the ground clearance of the front end of the case support 8 changes, and the lift link The base end of the lift link 16 also changes and the rotation locus of the tip of the lift link 16 changes, but the pin hole 23 of the upper receiving part 19a is positioned on the rotation locus of the tip of the lift link 16. By adjusting the forward and backward rotation of the upper receiving portion 19a, the bifurcated portion 16a of the lift link 16 and the upper receiving portion 19a can be connected to each other in any specification of the tractor B.

In the figure, C is a horizontal line, and C ₁ is a case support center line connecting the hit pin 8a of the case support 8 and the drive shaft 6.

In addition, the tillage adjustment section 9 is connected to the left and right rotary frames 2.
By rotating the handle 9a of the tillage adjustment section 9, the rotary frames 21 and 21 can be adjusted up and down, and in turn, the up and down position of the rotary section 3 can be adjusted. It is configured so that it can be done.

Therefore, the forked portion 16a at the tip of the lift link 16
When the left and right rotary frames 21, 21 and the case support 8 are connected to the lift link receiver 19, the left and right rotary frames 21, 21 and the case support 8 are integrated via the lift link receiver 19 and the lift link 16, respectively, which are installed upright at the front ends of the frames 21, 21. Therefore, when the handle 9a of the tilling joint part 9 is rotated, the case support 8 moves up and down in conjunction with the up and down movement of the left and right rotary frames 21 and 21. It is something that moves.

Therefore, when connecting the rear end hitch 1 of the tractor and the front end of the case support 8, by operating the tiller joint 9 to align the front end of the case support 8 with the hitch 1, the connection work can be done quickly and easily. It can be done.

In FIG. 1, 24 is a stand, and the stand 24 has an upper part connected to a stand receiver 25 provided on the pin main body 14a of the lift link pin 14, and the rotary device A after the connection is released by the stand 24. This is to support the equipment A and prevent it from falling over.

[Brief explanation of drawings]

FIG. 1 is a side view of a rotary device having a case support rotation restriction structure according to the present invention. Second
The figure is a plan view of the main parts. FIG. 3 is a side view of the main parts. FIG. 4 and FIG. 5 are explanatory diagrams of usage conditions. A...Rotary device, 3...Rotary part, 5...
...Main beam, 7...Link flange, 8...
Case support, 10... Gear case, 14...
Lift link pin, 15...Lift arm, 16
...Lift link, 19...Lift link receiver,
21...Rotary frame.

Claims (1)

[Scope of utility model registration request] Left and right main beams 5 supporting the rotary section 3;
A gear case 10 is installed between the base ends of the gear case 10 so as to be movable up and down, and a case support 8 is provided to protrude forward from the gear case 10, and the front end of the case support 8 is detachably connected to the rear end hitch 1 of the tractor. ,
The front ends of left and right rotary frames 21, 21 are connected to the rear ends of the left and right link flanges 7, 7, which are erected from the base ends of the left and right main beams 5, 5, respectively, and a lift link is provided at the front end of at least one of the frames 21. A receiver 19 is erected so as to be able to freely adjust its rotational position, and a base end of a lift link 16 is rotatably supported on a lift link pin 14 that protrudes laterally and outwardly from the middle part of the case support 8. , a case support in a rotary device in which the tip of the lift link 16 can be redirected and connected to the tip of the lift arm 15 protruding from the rear of the tractor B so as to be movable up and down, and the lift link receiver 19. Rotation regulation structure.