JPS5849041Y2 - Automatic reversing double plow - Google Patents

Description

[Detailed description of the invention] The present invention relates to an automatic reversing bicycle, and the deflection reversal of a bicycle that is towed by being connected to a three-point suspension mechanism of a tractor is linked to the lifting and lowering movements of the three-point suspension mechanism. In addition to automatically reversing the deflection of the dual-use structure, the automatic reversal of the deflection of the dual-use structure can be suppressed as necessary.

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

Reference numeral 1 denotes a set fitting for a tractor (not shown), and this set fitting 1 has a bar through hole 3 protruding from the lower end of a bifurcated lower side frame portion 2 facing each other, and a bar through hole 3 is provided in a protruding manner in the middle of the lower side frame portion 2. Pin through holes 4°5 are bored at the rear, facing each other.
Also, on the upper part of the lower both side frame parts 2 of C, there is a narrow upper blade side frame part 6.
are integrally connected, and a pin through hole 7 is bored in the middle of the upper side frame portions 6 facing each other, and a piece body 8 is vertically rotated between the upper portions of the upper blade side frame portions 6. It is formed to be freely pivoted.

Further, 9 is a main frame, and this main frame 9 is a bifurcated front side frame part 1.
A bar passage hole 11 communicating with the bar passage hole 3 is bored in the bar passage hole 3, and an arc-shaped elongated hole 12 with the bar passage hole 11 as the center is bored in the rear part of the bar passage hole 11. An engagement pin 1 is provided on the outside of one side frame portion 10 of the front both side frame portions 10.
3 is protrudingly provided, and trifurcated upper, middle, and lower step frame portions 14, 15.16 are provided in succession at the rear of the front both side frame portions 10, and through holes 17 are formed in these upper, middle, and lower step frame portions 14, 15.16. The lower end of the stopper piece 18 is rotatably supported in the front and rear directions on the upper part of the upper frame part 14 by a horizontal shaft 19, and the stopper piece 18 and the rear end protrusion of the upper frame part 14 A tension spring 20 that biases the stopper piece 18 rearward is stretched between the two.

The front end of the main frame 9 is engaged with the lower blade side frame portions 2 of the set metal fitting 1 and communicates with each other through the bar passage holes 11 and the bar passage holes 3 of the set metal fitting 1. is inserted, and the locking pin 22 is inserted into the pin through hole 4 of the set metal fitting 1 and the long hole 12 of the main frame 9. Therefore, the main frame 9 is attached to the set metal fitting 1 by the bar 21.
It is mounted so as to be rotatable in the vertical direction within the range of the elongated hole 21 via a locking pin 22.

Further, reference numeral 23 denotes a main shaft metal fitting having a substantially fan-like shape.A main shaft 24 rotatably inserted into the through hole 17 of the main frame 9 is fixed and vertically mounted on this main shaft metal fitting 23.
An arcuate long guide hole 25 with the main shaft 24 as the center is bored in the rear part of the guide hole 25. Locking pieces 25a and 25b are integrally erected at both ends of the spindle fitting 23, located on the sides of the engagement recesses 26 and 27.

In addition, a spring hook is attached to the front end of the main shaft fitting 23, and the rear end of the metal fitting 28 is supported horizontally rotatably through a shaft 29, and this spring hook is inserted into an elongated hole 30 bored in the metal fitting 28. Main frame 9 above
The upper part of a shaft rod 31 protruding from the upper part is loosely fitted so as to be freely rotatable in the horizontal direction.

Reference numeral 32 designates a floating bracket, which is pivotally supported on the upper protrusion of the main shaft 24 of the main shaft bracket 23 so as to be rotatable in the horizontal direction. A stopper pusher 33 is attached to the stopper pusher 33 so as to be able to move back and forth in the front and rear directions.
A tension spring 34 is stretched between the rear end of the movable metal fitting 32 and the rear end of the movable metal fitting 32, and the stopper push metal fitting 33 is held in position by this tension spring 34.

Further, the main shaft fitting 23 is rotated to one force side of the reference position X in the front-rear force direction of the machine body centering on the main frame 9, and the floating fitting 32 is rotated to the other side of the reference position X. When engaged with the locking piece 25a at one end of the main shaft fitting 23 and deviated by a predetermined angle α from the reference position A tension spring 35 is stretched between the pin and the tension spring 35, and the floating metal fitting 32 is set to rotate in the direction in which it is deviated.

Furthermore, a long hole 3 is formed in the front and back force direction of the floating metal fitting 32.
The above-mentioned stopper pusher fitting 3 is loosely fitted in the inner part of
A piece body 40 as a universal joint attached to one end of the connecting rod 38 is rotatably connected to the upper end of the protruding rod 37 fixed to the connecting rod 3 by a shaft 8a.
The other end of the piece 4 is attached to the end of the set.
0 by a shaft 8a, and this connecting rod 38
is formed so that its length can be freely adjusted via a turnbuckle 39.

Next, at the rear part of the main frame 9, a front shaft 41 and a rear shaft 42 as dual-purpose racks are respectively attached so as to be rotatable in the horizontal direction.

The front force field 41 is configured to press the front end of one arm 44 of both side arms 44 with the key 2 with respect to the main shaft 24 which is rotatable between the middle frame section 15 and the lower frame section 16 of the main frame 9.
4a, and the front end of the other arm 44 of the both-side arms 44 is horizontally rotatable with respect to the front shaft 43, which is located at the side force part of the main shaft 24 and is suspended in parallel. A beam 46 is attached to the rear ends of both arms 44 via a rear shaft 45 so as to be rotatable in the horizontal direction, and a tip 48 and a spatula 49 are attached to the front of an inclined shaft 47 at the lower end of the beam 46. is provided, and a reversing rod 50 is attached to the rear of the tilting shaft 47.

In addition, the rear 7j 42 is the upper frame portion 14 of the main frame 9.
The front end portions of both arms 52 are attached to front shafts 51 on both sides provided between the frame portion 15 and the middle frame portion 15 so as to be rotatable in the horizontal direction.
, a falcon spatula 56, a reversing rod 57, etc., are provided in the same manner as in the foregoing force bearing 41, respectively.

The middle part of the @pregnancy reversal handle 58 is pivotally supported by the upper protrusion of the rear shaft 45 on one side of the front force reversal handle 58.
8 is pivotally supported on one side arm 44 by a shaft 59, and the rear part of the reversing handle 58 is supported by the reversing rod 50.
Also, the middle part of the rear falcon inversion handle 60 is pivotally supported by a shaft 61 on the beam 53 of the rear part 42, and one side of the inversion handle 60 has a force-bent end and the front 75!41 A reversal interlocking rod is pivotally supported between the one side protrusion of the one side arm 44 and the hook is passed, and the rear part of the rear falcon reversing handle 60 is loosely fitted into the reversing rod 57. .

In FIG. 1, reference numeral 63 indicates a plowing depth adjustment device for the front furrow 41, and reference numeral 64 indicates a fixing pin for suppressing displacement of the rear furrow 42. When this fixing pin 64 is removed, the rear The arms 52 on both sides of the carrier 42 can be rotated to the side via the front and rear shafts 51.65, thereby making it possible to deflect the rear falcon 42 in the left and right directions. In the embodiment, it is assumed that the fixing pin 64 is not removed, that is, the arms 52 on both sides of the rear force 42 are used in a fixed state.

Next, 70 is a locking frame, and this locking frame 70 has a shaft through hole 71 bored in the lower front part of the plate body, and locking grooves 72 and 73 are formed in the front and rear parts. and furthermore,
An engaging protrusion 74 is cut and formed on the upper part, and
An operating lever 75 is formed at the upper end to protrude toward the front upper blade.

The locking frame 70 has its shaft through hole 71 aligned with the pin through hole 5 of the set metal fitting 1, and the shaft 76 is inserted therethrough, and the shaft 76 is prevented from coming out by the stopper 77, so that it is locked. The frame 70 is rotatably supported on the set metal fitting 1 about a shaft 76, and furthermore, a tension spring 79 is provided between the engagement protrusion 74 and the engagement protrusion 78 protruding from the set metal fitting 1. The hook is pushed rearward so that its rear locking groove 73 is engaged with the pin 13 of the main frame 9, and is rotated forward via the operating lever 75. As a result, the front locking groove 72 is engaged with a locking pin 80 protruding from the set metal fitting 1.

In this case, the operating lever 75 extends toward the front and upper side of the set metal fitting 1, and is located near the driver's seat of the tractor (not shown).

In the figure, y indicates the center line of the reference position X of the aircraft.

In such a configuration, set metal fittings 1 are attached to lower links on both sides of a three-point suspension mechanism of a tractor (not shown).
To attach the bar 21, both sides of the bar 21 are connected, and the upper part of the set leather fitting 1 is connected to the top link above the center of the three-point suspension mechanism of the tractor through a pin inserted into the pin through hole 7 of the set fitting 1. A state in which the front falcon 41 and the rear falcon 42 connected to the set metal fitting 1 are reversed to either the left or right side in the direction of movement as shown in FIGS. 4a and 4b.
The plowing method is carried out while being set up and towed by a tractor.

First, it is assumed that the falcon plowing is performed in the left-inverted state shown in FIG. 4a.

In this case, the main frame 9, which is rotatably connected to the set metal fitting 1 via the mounting bar 21, is pushed forward via the front force 41 and the rear force force 42 by the descent of the set metal 1, and the fifth As shown in FIG. A stopper piece 18 attached to the main frame 9 is engaged and locked in the continuous engagement recess 26, and the floating fitting 32 is held in the above-mentioned position with the main shaft 24 as a fulcrum by the tensile action of the tension spring 35. The kusamochi work is performed in a state where the locking piece 25a on the mating recess 26 side is in contact with the locking piece 25a.

Next, when the tractor is turned in one direction and the front furrow 41 and the rear grass 42 are reversed to the right side in the direction of travel as shown in FIG. 4, the three-point suspension mechanism of the tractor is raised. As shown in a, the set metal fitting 1 is lifted, and the main frame 9 with the front force ridge 41 and the rear force falcon 42 attached to the lower end of the set metal 1 is mounted using the bar 21 as a fulcrum due to its own weight. As it is rotated downward, the upper end of the elongated hole 12 is locked by the locking pin 22, and the front end is rotatably attached to the upper end of the set metal fitting 1 via the piece 8 and the shaft 8a. The connected continuous rods 38 of a certain length are connected to the main frame 9
It is rotated downward about the shaft 8a as a fulcrum in synchronization with the downward rotation of.

As the connecting rod 38 rotates downward, the protruding rod 37 connected to the rear end of the connecting rod 38 is pulled forward in the elongated hole 36, and the stopper pusher 33 fixed to the lower end of the protruding rod 37 is pulled forward. is pulled forward against the tension spring 34, and the tip of the stopper pusher 33 pushes the stopper piece 18 forward against the tension spring 20, causing the stopper piece 18 to guide the main spindle fitting 23. It is made to escape from the engagement recess 26 of the elongated hole 25.

In addition, since the floating metal fitting 32, which is energized by the action of the metal fitting 28 and the bow tension spring 35, is deviated from the reference position X by the predetermined angle α as described above, As the connecting rod 38 rotates downward, it is automatically rotated in the left direction in the figure as shown in FIG. is rotated in conjunction with the rotational direction, and the rotation end point of this main shaft metal fitting 23 is when the upper end of the elongated hole 12 of the main frame 9 that rotates downward is locked by the locking pin 22 of the set metal fitting 1. becomes.

Further, due to this rotation of the main shaft fitting 23, the stopper piece 18 is positioned in front of the engagement recess 27 at the other end of the guide elongated hole 25, and is pulled into the engagement recess 27 by the return force of the tension spring 20. When engaged, this stopper piece 18
The main shaft fitting 23 is locked to the main frame 9 by this.

Then, as the main shaft fitting 23 rotates, the both-side arms 44 fixed to the main shaft 24 integrated with the main shaft fitting 23 via the key 24a are rotated, and this -force is applied to the one side arm 44 via the reversing handle 58. The connected front power falcon 41 is reversed to the right, and the rear power falcon 42 connected to the negative side arm 44 via the reversal linking rod 62 and the rear falcon reversal handle 60 is reversed to the right. As shown in the previous 75 Hayabusa 4
1 and the rear furrow 42 are automatically reversed and set to the right side in the direction of travel.

Next, as described above, the direction of the tractor is changed while it is raised to the front 7j 41 and the rear falcon 42, and the three-point suspension mechanism of the tractor is lowered in preparation for re-ploughing, and as shown in Fig. 7a, the set metal fittings 1 and the main frame 9 are lowered, but due to the landing of the front force 41 and the rear force Hayabusa 42 of the main frame 9, the main frame 9 is rotated upward with the mounting bar 21 as a fulcrum and is attached to the locking pin 22. The lower end of the elongated hole 12 is locked, and the connecting rod 38 is also pushed up.

At the same time, as shown in FIG. 7, the floating bracket 32 is automatically moved from the position shown by the chain line in the figure to the position shown by the solid line around the main shaft 24 by the action of the metal fitting 28 and the tension spring 35. It rotates and comes into contact with the locking piece 25b at the other end of the main spindle fitting 23, in preparation for the next direction change.

In this case, since the connecting rod 38 is pushed up, the connecting rod 38
Therefore, the protruding rod 37 is not interlocked, and the stopper pusher 33 resists the tension spring 34 to push the stopper piece 18
The stopper piece 18 is held in position within the engagement recess 27 without being interlocked with the side.

Then, the front plow 41 and the rear plow 42 are re-ploughed by the front plow 41 and the rear plow 42 which have changed direction and been reversed and lowered by being towed by a tractor.

Next, when changing direction to the outward route again at the terminal point of the return trip, when the set bracket 1 is lifted in the same manner as above, the main frame 9, connecting rod 38, main shaft bracket 23, floating bracket 32, etc. are the same as above. The forward Hayabusa 41 and the rear Power Hayabusa 42 are automatically switched and reversed to prepare for the grass mochi on the outward journey.

In this way, the displacement of the front suspension 41 and rear suspension 42 is automatically reversed in conjunction with the raising and lowering movement of the three-point suspension mechanism of the tractor. If you do not require automatic deflection reversal of
When the operating lever 75 is pushed rearward and upward to lock the rear locking groove 73 of the locking frame 70 with the locking pin 13 of the main frame 9, the locking pin 22 prevents movement within the elongated hole 12. The automatic deflection reversal of the front falcon 41 and the rear furrow 42 is thereby prevented.

According to the present invention, the main frame 9 can be reliably moved up and down within the vertical rotation range of the main frame 9 in accordance with the up and down movement of the three-point suspension mechanism at the rear of the tractor, and the connecting rod 38 can be moved up and down reliably. The stopper pushing metal fitting 33 is interlocked with the linking rod 38 to reliably switch the stopper piece 18, and the arm 44 integrated therewith is reliably rotated horizontally via the floating metal fitting 32, the main shaft metal fitting 23, and the main shaft 24. And this arm 4
4, the working direction of the dual-use housing can be automatically and reliably reversed. At this time, the stopper piece 18 rotatably attached to the main frame 9 is inserted into the guide elongated hole 25 of the main shaft fitting 23.
Since the projections are provided so as to selectively engage and disengage from the engagement recesses 26 and 27 in the interior, the dual-use housing 41 that is set by the switching operation of the stopper piece 18, together with the non-operation of the stopper pusher 33, The deflection reversal position can be held reliably,
Moreover, this deflection reversal is performed by utilizing the weight of the dual-purpose holder 41 itself as the dual-purpose holder 41 moves up and down. Also, it is possible to reliably invert the displacement of each of the dual-use stilts 41 in the same direction, and therefore reciprocating plowing can be performed with high efficiency.

In addition, when the dual-use housing 41 does not require automatic displacement reversal, the locking frame 70 is rotatably supported on the set metal fitting 1.
By pulling and rotating against the spring 79 and fitting the rear locking groove 73 into the engagement pin 13 protruding from the main frame 9,
Vertical rotation of the main frame 9 with respect to the set metal fitting 1 is prevented, and the set metal fitting 1 and the main frame 9 can be reliably connected integrally. By locating the operating lever 75 near the driver's seat of the tractor, it is possible to easily switch between locking and unlocking the tractor while sitting in the driver's seat. The deflection reversal of the dual-use housing 41 can be freely and reliably controlled according to work conditions and running conditions.

[Brief explanation of drawings]

The figures show one embodiment of the present invention, in which Fig. 1 is a side view of the automatic reversing dual use device, Fig. 2 is an exploded perspective view of its main parts, and Fig. 3 is an exploded perspective view of the main parts.
The figure is a side view of the locking frame, Figures 4a and 4b are plan views explaining the overall function, and Figures 5a and b to 7a and b are respectively showing the functions of the main parts. , a is its side view, b
is its plan view. 1... Set metal fittings, 5... Pin through hole,
9... Main frame, 12... Long hole, 13...
...Engagement pin, 18...Stopper piece, 21
......Mounting with bar 22...Lock pin,
23... Main shaft metal fitting, 24... Main shaft, 2
5...Guide long hole, 26.27...Engagement recess, 32...Idle fitting, 33...-
Stopper push metal fitting, 38... Continuous rod, 41...
...Front force bearing as a dual-use body, 44... Arm, 70... Locking frame, 73... Rear locking groove, 75...・Operation lever 79...Tension spring.

Claims (1)

[Scope of utility model registration request] a set metal fitting 1 connected to a three-point suspension mechanism of a tractor;
The set fitting 1 is attached to the lower part thereof via a bar 21 and is pivoted so as to be rotatable within a certain range in the upper and lower blade directions.
A main frame 9 protruding from the main frame 9, a pin 22 inserted through the elongated hole 12 of the main frame 9 and the pin through hole 5 of the set metal fitting 1, and a pin 22 rotatably hanging from the rear of the main frame 9. A main shaft 24 is provided, and an arcuate long guide hole 25 fixed to the upper part of the main shaft 24 and having the main shaft 24 as the center of the circle is formed in the rear part, and engagement recesses i26 and 27 are formed in the rear of both ends of the guide long hole 25. A fan-shaped main spindle fitting 23 with a series of 23 and 24 is attached to the upper part of the main shaft 24 so as to be freely rotatable in the horizontal direction. Idle fitting 32
and an arm 44 whose front end is fixed to the lower part of the main shaft 24.
a dual-purpose sill body 41 that is attached to the rear part of the body and whose displacement is reversed through the rotation of the arm 44; and a guide that is pivotally supported on the main frame 9 so as to be rotatable in the front and rear directions and formed on the main shaft fitting 23. A stopper piece 18 protrudes into the long hole 25 and selectively engages and disengages into the engagement recesses 26 and 27 to fix rotation of the spindle fitting 23, and a stopper piece 18 is provided on the upper part of the set fitting 1, the front and rear ends of which are movable up and down. a connecting rod 38 attached to the connecting rod 38; and the stopper piece 18, which is rotatably attached to the rear end of the connecting rod 38 and engages with the engaging recess 26 or the engaging recess 27 when the three-point suspension mechanism rises. The main frame 9 is engaged with and disengaged from a stopper pushing metal fitting 33 that can move forward and backward to release the locking of the locking pin 13 that is rotatably supported on the set metal fitting 1 and protrudes from the main frame 9 at the rear. A locking frame 70 which has a rear locking groove 73 for fixing and releasing the rotation and is energized by a tension spring T9, and a locking frame 70 attached to this locking frame 70 to rotate the locking frame 70. The operating lever 75 extends forward as shown in FIG.
An automatic reversing double-use machine characterized by having the following features: