JPS5849043Y2 - Automatic reversing double plow - Google Patents

Description

[Detailed description of the invention] The present invention relates to an automatic reversing pear, which is connected to a three-point suspension mechanism of a tractor to automatically reverse the deflection of a towed pear in conjunction with the lifting and lowering movement of the three-point suspension mechanism. It was designed to be carried out in a specific manner.

Next, an embodiment of the present invention shown in the accompanying drawings will be described.

Reference numeral 1 denotes a main frame, and this upper frame 1 has a bar passage hole 3 protruding from the front part of a front frame part 2 formed in a channel shape.
Then, a lower link 59 serving as a three-point suspension mechanism in tractor A is connected via a hitch bar 60, and a plate stopper 61 is attached to this pitch bar 60.

Further, both side frame portions 4 are erected on the front frame portion 2, and pin through holes 5 are provided protrudingly from the upper portions of the both side frame portions 4. Links 62 are connected via pins 63.

Further, a guide pin 6a is horizontally suspended between the frame portions 4 on both sides below the pin passage hole 5, and an engaging portion 6b is provided projecting between the front portions of the frame portions 4 on both sides below the guide pin 6a.

Further, at the rear of the front frame portion 2, there are three-pronged upper, middle and lower step frame portions 7,
8.9 are installed in a row, and these upper, middle, and lower tier frame parts? , 8.9 is provided with a through hole 10 passing through it in the vertical direction, and the lower end of the stopper piece 11 is pivotally supported on the upper part of the upper frame part 7 on a horizontal shaft 12 so as to be rotatable in the front and rear direction. A tension spring 13 for biasing the stopper piece 11 rearward is stretched between the stopper piece 11 and the rear end protrusion of the upper frame part 7.

Reference numeral 14 denotes a main shaft metal fitting having a substantially fan-like shape, and a main shaft 15 that is rotatably inserted into the through hole 10 of the main frame 1 is fixed and vertically attached to the main shaft metal fitting 14 approximately in the middle thereof.
An arcuate long guide hole 16 with the main shaft 15 as the center is bored in the rear part of the main shaft fitting 14, and engaging recesses 17 and 18 are connected to the rear of both ends of the long guide hole 16. Locking pieces 19 and 20 are provided on both sides of the main shaft fitting 14 to face each other and stand on the sides of the mating recesses 17 and 18.

Further, a spring hook at the front end of the main shaft metal fitting 14 supports the rear end of the metal fitting 21 so as to be rotatable in the horizontal direction via a shaft 22, and this spring hook is bored in the length direction of the middle part of the metal fitting 21. Long hole 23
The upper part of the shaft rod 24 protruding from the front upper part of the main frame 1 is rotatably fitted into the main frame 1.

Reference numeral 25 denotes a floating metal fitting, which is pivotally supported on the upper protrusion of the main shaft 15 of the main shaft metal fitting 14 so as to be rotatable in the horizontal direction, and the stopper piece 11 is pushed to the rear lower part of the floating metal fitting 25. A stopper pusher 26 is attached so as to be able to move back and forth in the front-back direction, and a tension spring 2 is installed between the rear end of the stopper pusher 26 and the rear end of the floating bracket 25.
7 is stretched, and this tension spring 27 holds the stopper pusher 26 in position.

In addition, the main shaft fitting 14 is rotated to one of the reference positions X in the longitudinal direction of the machine body with the main frame 1 as the center, and the floating fitting 25 is rotated to the other side of the reference position X. 14 and is deviated by a predetermined angle α from the reference position
A tension spring 28 is stretched between the pin at the front end of the spindle 14, and the tension spring 28 is set to rotate the main shaft metal fitting 14 in the direction in which the floating metal fitting 25 is deviated.

Furthermore, a long hole 2 formed in the front-rear direction of the floating metal fitting 25
9 has a protruding rod 30 fixed to the stopper pusher 26.
A piece body 31 as a universal joint is rotatably attached to the upper end of the protruding rod 30 via a shaft, and one end of the wire 32 is connected to this piece body 31. The wire 32 is guided forward, and the wire 32 is placed midway on the guide pin 6a that is suspended horizontally on both side frames 4 of the main frame 1, and the wire 32 is further placed on the main body 6 of the tractor A.
The other end of the wire 32 pulled out from the guide body 65 is engaged with the engaging portion 6b protruding forward of the both side frame portions 4 of the main frame 1. Stop.

Next, a front umbrella body 33 and a rear umbrella body 34 as an expropriation umbrella body are attached to the rear part of the main frame 1 so as to be horizontally rotatable.

That is, the front umbrella body 33 has the main shaft 15 which is rotatable between the middle frame part 8 and the lower frame part 9 of the main frame 1.
On the other hand, one side arm 35 of the parallel both side arms 35
The front end of the arm 35 is fixed with a key 36, and the front end of the other arm 35 of the arms 35 on both sides is rotated in a horizontal direction with respect to a front shaft 37 that is located on the side of the main shaft 15 and is vertically disposed in parallel. A beam 39 is attached to the rear ends of both arms 35 so as to be rotatable in the horizontal direction via a rear shaft 38, and a tilting shaft 40 is attached to the lower end of this beam 39.
In addition to providing a pear tip 41 and a Hayabusa spatula 42 on the front part,
A reversing rod 43 is attached to the rear part of the tilting shaft 40.

Further, in the rear umbrella body 34, the front end portions of both side arms 45 are attached to the front shafts 44 on both sides provided between the upper frame portion 7 and the middle frame portion 8 of the main frame 1 so as to be rotatable in the horizontal direction. In addition, a beam 46, a tilting shaft 47, a fertilizing tip 48, a fertilizing spatula 49, a reversing rod 50, etc. are provided in the same manner as in the front umbrella body 33, respectively.

The middle part of the front falcon inversion handle 51 is pivotally supported on the upwardly protruding part of the rear shaft 38 on one side of the front umbrella body 33, and this inversion handle 5
1 is pivotally supported on one side arm 35 by a shaft 52, the rear part of the reversing handle 51 is loosely fitted to the reversing rod 43, and the rear reversing handle 51 is loosely fitted on the beam 46 of the rear frame 34. 53 is pivotally supported by a shaft 54, and a reversal interlocking rod 55 is provided between one side bent end of this reversal handle 53 and one side protrusion of one side arm 35 of the front umbrella body 33. The hook is pivoted, and the rear part of the reversing handle 53 is loosely fitted into the reversing rod 50.

In FIG. 1, reference numeral 56 indicates a plowing depth adjustment device for the front umbrella body 33, and reference numeral 57 indicates a fixing pin for preventing displacement of the rear frame 34. When the fixing pin 57 is removed, the rear Both arms 45 of the grass body 34 have front and rear axes 44.58
Although it is possible to rotate the rear umbrella body 34 laterally through the rear umbrella body 34, it is possible to deviate the rear umbrella body 34 in the left-right direction. However, in this embodiment, the fixing pin 57 is not removed; It is assumed that both arms 45 of the rear umbrella body 34 are used in a fixed state.

Note that y in the figure indicates the center line of the reference position X.

Next, the operation of the above structure will be explained.

In the above configuration, when the front grass body 33 and the rear umbrella body 34 are inverted to either the left or right side, the tractor A
The falcon plowing is carried out while being towed by the tractor.

First, let us assume that falcon plowing is performed in the left-inverted state shown in FIG. 3a.

At this time, the main frame 1 including the front grass body 33 and the rear umbrella body 34 is lowered via the lower link 59 and the top link 62, and the front grass body 33 and the rear umbrella body 34 are grounded.

As shown in FIGS. 4a and 4b, the main shaft fitting 14 is engaged with the stopper piece 11 attached to the main frame 1 in the engagement recess 17 connected to one end of the guide elongated hole 16. At the same time, the floating metal fitting 25 is in contact with the locking piece 19 on the engagement recess 17 side with the main shaft 15 as a fulcrum due to the tensile action of the tension spring 28, and the grass mochi work is performed.

Next, when the tractor is turned and the front grass body 33 and the rear umbrella body 34 are reversed to the right side in the direction of travel as shown in FIG. 3, the three-point suspension mechanism of the tractor is raised. As shown in a, the main frame 1 is lifted by the lower link 59 and the top link 62, and the front grass body 33 and the rear grass body 34 attached to the rear end of the upper frame 1 are lifted up by the lower link 59 and the top link 62.
is lifted.

Further, by lifting and rotating the lower link 59 and the top link 62, as shown in FIG.
The wire 32 locked on b is connected to the guide body 65 of tractor A.
The position of the wire 32 in contact with the guide pin 6a rotates toward the guide body 65, and the piece 31 that locks one end of the wire 32 and the protruding rod 30 to which it is attached are pulled. The stopper pusher 26 fixed to the lower end of the protruding rod 30 is pulled forward against the tension spring 27, and the tip of the stopper pusher 26 pushes the stopper piece 11 forward against the tension spring 13. and push this stopper piece 11 into the guide elongated hole 1 of the spindle fitting 14.
6 from the engagement recess 17.

Therefore, the lower link 59 and the top link 6
2 to lift the main frame 1, the lower link 59
Since the turning radius of the top link 62 and the top link 62 when lifted up are different, the wire 32 is inflated to a length of about 11+12 minutes as shown in FIG. become.

Additionally, since the floating bracket 25, which is energized by the action of the spring hook 21 and the tension spring 28, is deviated from the reference position X by a predetermined angle α as described above, the main shaft 15 is As shown in FIG. 5, the main spindle fitting 14 is automatically rotated in the left direction in the figure as shown in FIG. .

Also, due to the rotation of the main shaft fitting 14, the stopper piece 11
is located on the front surface of the engagement recess 18 at the other end of the guide elongated hole 16, and is pulled by the restoring force of the tension spring 13 and engaged in the engagement recess 1@, and this stopper piece 1
1 locks the main shaft fitting 14 to the main frame 1.

As the main spindle fitting 14 rotates, both side arms 35 fixed to the main shaft 15 integrated with the main spindle fitting 14 via a key 36 are rotated, and are connected to this one side arm 35 via an inversion handle 51. The front grass body 33 is flipped to the right, and the rear umbrella body 34 connected to the negative side arm 35 via the reversal linking rod 55 is flipped to the right. and rear umbrella body 3
4 is automatically reversed and set to the right side in the direction of travel.

Next, as described above, the front grass body 33 and the rear umbrella body 34 are
When the tractor is turned and the three-point suspension mechanism of the tractor is lowered in preparation for re-ploughing, the front grass body 33 and rear umbrella body 34 of the main frame 1 are landed on the ground as shown in Fig. 6a. This front grass body 33 and the rear umbrella body 34
When the wire 32 is lifted, the wire 32 is automatically relaxed and pulled back, and the floating bracket 25 is rotated around the main shaft 15 by the action of the bracket 21 and the tension spring 28, as shown in FIG. This rotates automatically to the position shown by the solid line, and comes into contact with the locking piece 20 at the other end of the main shaft fitting 14, in preparation for the next direction change.

Then, the front frame body 33 and the rear umbrella body 34, which have changed direction and been reversed and lowered by being towed by a tractor, perform plowing.

Next, when changing direction to the outward route again at the terminal point of the return route, when the main frame 1 is lifted in the same manner as above, the wire 32, the main shaft bracket 14, the floating bracket 25, etc. operate in the same manner as described above, and the The frame body 33 and the rear umbrella body 34 are automatically switched and reversed to prepare for the grass mochi on the outward journey.

According to the present invention, when reversing the deflection of the twin-hulled umbrella body 33, the main frame 1 is moved by the vertical movement of the three-point suspension mechanism of the tractor.
When the is moved up and down, the tensioning action of the wire 32 causes the stopper push fitting 26 to be interlocked to ensure that the stopper piece 11 is switched, and the arm 35 integrated therewith is reliably moved via the floating fitting 25, the main shaft fitting 14, and the main shaft 15. The arm 35 rotates horizontally, and the twin-hulled umbrella body 33 can be automatically and smoothly and reliably deflected and reversed in the desired working direction through the arm 35. The stopper piece 11 is inserted into the engagement recess 1 in the guide elongated hole 1-6 of the main shaft fitting 14.
7 and 18 so as to selectively engage and disengage, the stopper piece 11
The set deflection reversal position of the expropriation canopy 33 can be reliably maintained by the switching operation, and the reversal of the expropriation can be achieved by utilizing the weight of the expropriation canopy 33 itself as the double-barrel canopy 33 moves up and down. Therefore, even when multiple expropriation plants 33 are connected, each twin-hulled umbrella body 33 can be reliably deflected and reversed in the same direction, and the wire 32 is connected to its front part. The hook is rotated around the guide pin 6a of the main frame 1 and the guide body 65 of the tractor body 64, and is also hooked to the engaging portion 6b of the main frame 1, so that it can be moved in accordance with the vertical movement of the main frame 1. The wire 32 can act to pull a sufficient length, thereby making it possible to easily and accurately reverse the deflection of the twin-hulled umbrella body 33, and therefore reciprocating plowing can be performed with high efficiency. Automatic reversal expropriation can be provided.

[BRIEF DESCRIPTION OF THE DRAWINGS] The figures show one embodiment of the present invention, in which Fig. 1 is a side view of the automatic reversing device, Fig. 2 is an exploded perspective view of a part thereof, and Fig. 3 is a side view of the automatic reversing device.
Figures a and b are plan views explaining the overall operation, Figure 4 a and b
Figures 6a to 6b are for explaining the functions of the respective main parts; a is a side view, b is a plan view, and Figure 7 is a side view showing the operating state of the wire. A...Tractor, 1...Main frame, 6a.
... Guide pin, 6b ... Attachment part, 11.
... Stopper piece, 14 ... Spindle fitting, 1
5...Main shaft, 16...Guide slot, 1
7.18... Engagement recess, 25... Idle fitting, 26... Stopper push fitting, 32...
...Wire, 33...Front frame as twin umbrella body, 35...Arm, 59, 62...
・Lower link and top link as a 3-point suspension mechanism, 64 pa...main body, 65...guy
Do type.

Claims (1)

[Scope of utility model registration request] A main frame 1 is connected to a three-point suspension mechanism of a tractor A, and has an engaging part 6b provided at the upper front part and has a guide pin 6a horizontally suspended above the engaging part 6b; a main shaft 15 rotatably installed vertically at the rear of the main shaft 15;
An arcuate long guide hole 16 is formed in the rear part of the guide hole 16 with the main shaft 15 as the center of the circle.
A fan-shaped main shaft fitting 14 having engagement recesses 17 and 18 formed in the rear portions of both ends of the main shaft 15 is attached to the upper part of the main shaft 15 so as to be rotatable in the horizontal direction, and the main shaft fitting 14 is interlocked with each other so that the main shaft fitting 14 is always deviated in a favorable direction. a floating metal fitting 25 which is rotationally energized by the rotation of the main shaft 15; , a guide elongated hole 1 which is pivotally supported by the main frame 1 so as to be rotatable in the front and back direction and is formed in the main shaft fitting 14;
a stopper piece 11 that protrudes from 6 and selectively engages and disengages in the engagement recesses 17 and 18 to fix rotation of the main shaft fitting 14;
The tractor A is provided on the idler fitting 25 so as to be movable forward and backward.
a stopper pusher 26 for releasing the stopper piece 11 engaged with the engagement recess 17 or the engagement recess 18 by raising the three-point suspension mechanism, and the stopper pusher 26.
6, one end is connected to the guide pin 6a of the main frame 1 and the guide body 65 horizontally suspended at the rear of the main body 64 of the tractor A, and the other end is connected to the Wire 3 anchored to anchoring portion 6b of main frame 1
2, and a wire 32 that accompanies the vertical movement of the main frame 1.
The automatic reversing expropriation falcon is characterized in that the stopper pusher fitting 26 and the floating metal fitting 25 are actuated by pulling the stopper fitting 26 and the floating fitting 25, and the expropriation umbrella body 33 is reversed via the main shaft fitting 14 and the main shaft 15.