JP3218146B2 - Tillage equipment - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a tilling apparatus for tilling and crushing cultivated soil in a field.

[0002]

2. Description of the Related Art Conventionally, as a tilling apparatus of this type, for example, brackets are arranged and fixed on the left and right sides of a machine frame having a transmission, and the output from the transmission is provided between the lower ends of the left and right brackets. A rotary-tilted rotary tilling body is rotatably mounted on a shaft, and right and left portions of a tilling portion cover covering an upper portion of the rotary tilling body are fixed to the left and right brackets, and the tilling portion cover is attached to the left and right brackets. A configuration is adopted that includes left and right cover side plates that are fixed and a cover top plate that is welded between the left and right cover side plates. Then, the cultivated soil in the field is tilled by the rotary tilling body by the rotary tilling body being driven to rotate, and the cultivated soil is released toward the cultivating portion cover, and the cultivated portion cover is removed from the cultivating portion cover to a leveling body. You will be guided towards.

[0003]

In the above-mentioned conventional configuration,
At the time of tilling work, the entire device is vibrated by the rotary drive of the rotary tilling body, and the cultivating part cover is vibrated by the impact of the strong earth pressure of the tilling soil released from the rotary tilling body, and the vibration causes the cultivating part cover. The cover top plate is deformed, the cover top plate interferes with the lower part of the transmission case, the welded part between the left and right parts of the cover top plate and the left and right cover side plates is cracked by fatigue failure, and sometimes the cover side plate There is a problem that the cover top plate may come off from the cover.

In a structure in which an L-shaped connecting tool is fixed to a cultivating section cover with bolts and nuts, and a hitch arm of a machine frame is connected to an upper end of the connecting tool, the L-shaped connecting tool is used. Because the part cover is only partially supported,
Due to the vibration, there is a problem that the cultivating portion cover may be broken from the support portion by the L-shaped coupling tool, or the bolt head may penetrate from the cultivating portion cover to make it impossible to support the cultivating portion cover.

[0005] The present invention has been made in view of such a point, it is possible to reliably enhance the strength of the tilling section cover itself, and it is possible to sufficiently withstand the vibration during tilling work. Therefore, the cover top plate of the cultivating part cover is not deformed by the vibration during the tilling work, and this cover top plate does not interfere with the lower part of the transmission case, and the left and right parts of the cover top plate and the left and right cover side plates are welded. It is an object of the present invention to provide a tilling apparatus having a high resistance to vibration during tilling work without causing a portion to be cracked due to fatigue failure or a cover top plate coming off from a cover side plate.

[0006]

In the tilling apparatus according to the first aspect, brackets are fixed to both ends of the machine frame.
Rotary tilling between the lower ends of the opposing brackets
The body is rotatably mounted on the shaft and the opposite bracket is covered.
-Side plates are fixed, and between the facing cover side plates.
Secure the cover top plate that covers the upper part of the rotary till
And attach it to the top of this cover
To fix the reinforcements arranged in the left-right direction,
The hitch arms protrude integrally from the sides, and
Switch arms are connected to both sides of the reinforcing member, respectively .

[0007]

A tilling device according to a second aspect of the present invention is the tilling device according to the first aspect , in which the elasticity is disposed vertically in front of the rotary tilling body between the front end of the reinforcing member and the front end of the cover top plate. The upper end of the cover is sandwiched.

According to a third aspect of the present invention, in the tilling apparatus according to the first aspect, the reinforcing member is folded at the front end portion of the cover top plate toward the upper front side of the cover top plate via a curved portion to be integrally formed. The reinforcement is fixed to the front upper portion of the cover top plate, and connection plates for detachably connecting the hitch arms are provided on both sides of the reinforcement.

[0010]

In the tilling apparatus according to the first aspect, the hitch arms on both sides of the machine frame are connected to , for example, a tractor .
While being towed by a tractor, and fixed to both ends of the machine frame.
When the rotary tilling body between the lower ends of the worn brackets is rotated by the output from the tractor, the field is sequentially tilled and crushed with the rotary tilling body, and the cultivated soil is cultivated with the rotary tilling body. It is thrown toward the cover. Then, the cultivated soil is received by the cultivated portion cover, and guided to the leveling portion by the cultivated portion cover.

[0011] During this plowing耘work, by reinforcing body disposed in the lateral direction along the upper front of the cover top plate <br/> cover top plate of the tilling unit cover is fixed, enhanced strength of the cover top plate, by the hitch arm is connected to both sides of the reinforcement, on both sides of the reinforcing member
Part tilling unit cover is securely supported by linked hitch arm及beauty blanking <br/> racket securing the cover plate to, therefore, deformed or cover the top plate of the tilling unit covered by vibration during tilling, The welded portion between the left and right portions of the cover top plate and the left and right cover side plates is prevented from being fractured by fatigue.

[0012]

In the tilling apparatus according to the second aspect, the reinforcing body can also be used as a holding plate for holding the upper end of the elastic cover which is suspended from the front end of the cover top plate.

In the tilling apparatus according to the third aspect , the reinforcing body is formed integrally with the front end of the cover top plate by being bent toward the upper front side of the cover top via a curved portion, and at the front upper portion of the cover top plate. The strength of the front side of the cover top plate is strengthened by the reinforcing body and the curved portion, and the right and left hitch arms are easily attached to the reinforcing body by the connecting plates on the left and right portions of the reinforcing body. Can be linked.

[0015]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS The configuration of an embodiment of the present invention will be described below with reference to the drawings.

1 to 3, reference numeral 1 denotes a machine frame. The machine frame 1 has a hollow cylindrical main frame 2 which is long in the left-right direction. The upper end portions of the vertically arranged brackets 3 are integrally fixed to each other, and a vertically transmitting case 4 is integrally fixed to an outer portion of one of the brackets 3.

A front-rear hitch arm 5 disposed opposite to the left and right sides of the main frame 2 is slightly inclined forward and downward to project integrally therewith. A lower pin 6 is provided at the tip of the arm 5.
Are protruded from each other.

Further, a transmission case 8 containing a transmission 7 is disposed and fixed at an intermediate portion of the main frame 2 in the left-right direction, and an input shaft 9 of the transmission 7 is provided on the front side of the transmission case 8. An output shaft 10 of the transmission 7 is rotatably inserted into one side of the main frame 2 and is rotatably projected toward the transmission case 4. Is rotatably protruded into the upper end of the.

A top mast 11 is integrally formed on the upper part of the transmission case 8 so as to protrude forward and upward. A connecting pin 12 is detachably mounted on an upper end of the top mast 11. And the connection pin of the top mast 11
The lower pin 12 and the left and right lower pins 6 are detachably connected to a three-point suspension mechanism of a tractor (not shown).

Next, a rotary tilling body 13 is rotatably mounted between lower ends of the one bracket 3 and the other bracket 3. The rotary plow body 13, the lower end of the bracket 3 and the other bracket 3 of the one
Has a tilling shaft 14 both end portions are Jikuka rotatably, a number of flanges at predetermined intervals in the axial direction in the tilling shaft 14 (not shown) is integrally fixed to each Each flange A plurality of tilling claws (not shown) project radially from the circumferential side of the sword.

Also, on the outer side of the one bracket 3 ,
One end of the tilling shaft 14 protrudes rotatably into the lower end of the fixed transmission case 4. The projecting end of the tilling shaft 14 and the outer end of the output shaft 10 of the transmission 7 are connected to the transmission case 4. 4 are interlocked and connected by an interlocking medium (not shown) provided in the apparatus. The rotary tilling body 13 is driven to rotate by an output from the mission 7 via the output shaft 10 of the mission 7 and the interlocking medium.

The respective tilling claws radially protruding from the respective flanges are meant to include both tilling work and substitute digging work, and each cultivating claw is used for tilling work according to the working purpose. It uses a tilling nail and a tilling nail for scraping work.

Next, a tillage section cover 15 covering the upper part of the rotary tillage body 13 is disposed and fixed between the upper portions of the left and right brackets 3. This tillage section cover 15
It has left and right cover side plates 16 in the front-rear direction, which are disposed and fixed opposite to the inner portions of the left and right brackets 3, and formed between the left and right cover side plates 16 so as to be curved upward in an arc. cover the top plate 17 is a solid wear in one piece, the cover top plate
The front end of the cover top plate 17 is formed with a curl portion 18 that is curved in a cylindrical shape over the entire width of the front end portion of the cover top plate 17, and the rewind end 19 of the curl portion 18 is connected to the front end of the cover top plate 17. It is integrally fixed to the lower part by welding.

Further, a front reinforcing member 20 as a plate-like reinforcing member which is long in the left-right direction is superimposed on the front upper portion of the cover top plate 17 along the front end edge of the cover top plate 17, and this front reinforcing member Reference numeral 20 has its front and rear portions detachably provided and fixed by a plurality of bolts and nuts 21 at predetermined intervals in the left-right direction.

The front reinforcing member 20 has a longitudinally extending left and right superimposed plate 22 superimposed on the front upper portion of the cover top plate 17 at the front and rear portions thereof. Reinforcing ribs 23 having a mountain-shaped cross section projecting toward are formed integrally with each other. The front and rear overlapping plates 22 are detachably fixed to the front upper portion of the cover top plate 17 by the bolts and nuts 21.

An upper end of an elastic cover 24 made of a rubber plate or the like is interposed between the front end of the cover top plate 17 and the overlapped plate 22 at the front of the front reinforcing body 20.
The cover top plate 17 holding the upper end of the elastic cover 24
And the overlapping plate 22 at the front of the front reinforcing body 20 are detachably fixed by the bolts and nuts 21. The elastic cover 24 is vertically provided in front of the rotary till 13.

Further, on the left and right portions of the front reinforcing member 20, the reinforcing ribs 23 are fitted to the reinforcing ribs 23 and the front and rear overlapping plates 22.
The connecting plates 25 fixed to the left and right sides are integrally formed so as to protrude rearward and upward, and mounting holes 26 long in the front-rear direction are formed at the rear upper portions of the left and right connecting plates 25, respectively.

The upper ends of the left and right connecting plates 25 are in contact with the lower front portions of the right and left hitch arms 5. The lower front portions of the right and left hitch arms 5 are in contact with the upper ends of the right and left connecting plates 25. It is detachably connected by a bolt / nut 27 inserted from the mounting hole 26 to the lower front side of the hitch arm 5.

Next, a plate-like rear reinforcing member 28 which is long in the left-right direction is fixed on the rear upper portion of the cover top plate 17 along the rear end edge of the cover top plate 17. With
The upper end of the rubber plate 29 is disposed along the lower rear end of the cover top plate 17, and the rear reinforcing member 28, the rear end edge of the cover top plate 17, and the upper end of the rubber plate 29 are predetermined in the left-right direction. And a plurality of bolts / nuts 30 arranged at intervals.

The lower end of the rubber plate 29 is connected to the upper end of a first grading body 31, and the lower end of the first grading body 31 is connected to a second shaft via a support shaft 32. A terrain body 33 is pivotally mounted in a vertically rotatable manner.

The first terrain body 31 is supported by a suspending body 34 protruding from the cultivating section cover 15 and a supporting rod 35 which is vertically movably supported by the suspending body 34. Second
The ground shaping body 33 includes a front-rear adjustment rod 36 supported on the top mast 11 so as to be able to move back and forth, and an interlocking rod 37 rotatably supported at the rear end of the adjustment rod 36. Are supported so as to be rotatable up and down around the center. In the state where the second terrain body 33 is disposed horizontally behind the first terrain body 31, the second terrain body 33 performs the terrain work, and the second terrain body 33 is pivoted downward around the support shaft 32 to rotate the first terrain body 33 downward. In the state where it is protruded below the ground preparation body 31, the burying work is performed.

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

The lower pin 6 of the right and left hitch arms 5 of the machine frame 1 and the connecting pin 12 of the top mast 11 are connected to the three-point suspension mechanism of the tractor, respectively, and the input shaft 9 of the transmission 7 is connected via a power transmission shaft. It is connected to the PTO shaft of the tractor.

Then, when the machine frame 1 is towed by the tractor and the input shaft 9 of the transmission 7 is rotated via the power transmission shaft by the output from the PTO shaft of the tractor, the output from the transmission 7 The rotary tilling body 13 between the lower end portions of the left and right brackets 3 of the machine frame 1 is rotationally driven via the output shaft 10 and the interlocking medium in the transmission case 4, and the tilling claws of the rotary tilling body 13 cultivate the field. Are sequentially cultivated and crushed, and the cultivated soil is released toward the cultivating portion cover 15 by each tilling claw of the rotary tilling body 13.

The cultivated soil is received by the cultivated section cover 15 and the rubber plate 29 is removed from the cultivated section cover 15.
, And the tillable soil is sequentially leveled by the first leveling body 31 and the second leveling body 33. That is, during the leveling work, the second leveling body 33 is disposed horizontally in the rear part of the first leveling body 31 so as to be able to move up and down. Body 33
The tilling soil is sequentially leveled at.

Also, at the time of the soil removal operation, the second terrain body 33 is pivoted downward about the support shaft 32 at the lower end of the first terrain body 31 to protrude below the first terrain body 31. The tilled soil guided to the first grading body 31 via the rubber plate 29 by the second grading body 33 is sequentially buried and grounded. In addition, the rotary tilling body 13 may be driven to rotate at the time of burying work.
May be stopped.

[0037] At the time of this culture耘work, tilling cover 15
By the front reinforcing member 20 which is arranged in the lateral direction along the front upper part of the cover top plate 17 to the cover top plate 17 is fixed, the strength of the front portion of the cover top plate 17 is enhanced, The right and left hitch arms 5 of the machine frame 1 are connected to the left and right portions of the front reinforcing body 20 by connecting plates 25, so that the front side
Right and left hitch arms 5 connected to the left and right portions of the reinforcing body 20;
The tillage section cover 15 is securely supported by the left and right brackets 3 to which the left and right cover side plates 16 are fixed .

Further, the strength of the rear side portion of the cover top plate 17 is enhanced by arranging and fixing the left and right rear reinforcing members 28 along the rear upper portion of the cover top plate 17.

Therefore, during the tilling operation, the entire device is vibrated by the rotary drive of the rotary tilling body 13, and even if the tilling portion cover 15 is vibrated by the impact of the strong tilling of the tilling soil released from the rotary tilling body 13. The cover top plate 17 of the tilling unit cover 15 is not deformed by these vibrations, and the cover top plate 17 does not interfere with the lower part of the transmission case 8. The welded portion between the left and right portions of the top plate 17 does not crack due to fatigue failure, and the left and right portions of the cover top plate 17 are prevented from coming off from the left and right cover side plates 16.

The front end portion of the cover top plate 17 and the front side reinforcing member
Since the upper end of the elastic cover 24 is sandwiched between the superposed plate 22 and the elastic cover 24 which is vertically disposed in front of the rotary till 13, the elastic cover 24 is rotated by the elastic cover 24. The tilling soil released from each of the tilling claws of the tilling body 13 is received and dropped, and the tilling soil is prevented from being released toward the front of the rotary tilling body 13.

Next, in the above embodiment, the front reinforcing member 20 as a reinforcing member is formed separately from the cover top plate 17 of the cultivating section cover 15, and this front reinforcing member 20 is attached to the front upper portion of the cover top plate 17. However, the present invention is not limited to this, and the front reinforcing body 40 as a reinforcing body may be formed integrally with the cover top plate 17 of the tilling unit cover 15. Good.

In this case, the front reinforcing member as the reinforcing member
For example, as shown in FIGS. 4 and 5, the front panel 40 is folded back toward the front upper portion of the cover top plate 17 via a curved portion 41 formed on the front end of the cover top plate 17 over the entire length of the front end portion. And is integrally fixed by welding to the upper front side of the cover top plate 17. The front reinforcing body 40 is provided with the cover
Superposed plate 42 that is long in the left and right direction before and after
A reinforcing rib 43 having a mountain-shaped cross section protruding upward is integrally formed between the front and rear overlapping plates 42.

The other structure is the same as that of the above-described embodiment. Therefore, the reference numerals used in the above-described embodiment are entered and the description is omitted.

With such a configuration, the strength of the front side portion of the cover top plate 17 is enhanced by the curved portion 41 at the front end of the cover top plate 17 and the front reinforcing member 40, and The hitch arm 5 is connected to the left and right portions of the front reinforcement body 40 by the left and right connection plates 25, so that the front side
Right and left hitch arms 5 connected to the left and right portions of the reinforcing member 40 and
The tillage section cover 15 is securely supported by the left and right brackets 3 to which the left and right cover side plates 16 are fixed .

Therefore, during the tilling operation, the entire apparatus is vibrated by the rotary drive of the rotary tilling body 13, and even if the cultivating portion cover 15 is vibrated by the impact of the tilling soil released from the rotary tilling body 13 due to the strong earth pressure. The cover top plate 17 of the tilling unit cover 15 is not deformed by these vibrations, and the cover top plate 17 does not interfere with the lower part of the transmission case 8. The welded portion between the left and right portions of the top plate 17 does not crack due to fatigue failure, and the left and right portions of the cover top plate 17 are prevented from coming off from the left and right cover side plates 16.

Further, the front reinforcing member 40 is welded and fixed to the upper front side of the cover top plate 17 to screw the front reinforcing member 40 to the front upper portion of the cover top plate 17 with a large number of bolts and nuts 21. Can be omitted.

In each of the above embodiments, the front reinforcing member
Connecting plates 25 are fixed to the left and right portions of 20, 40, and these left and right connecting plates
By connecting the right and left hitch arms 5 to the left and right hitch arms 5, the right and left hitch arms 5 are reliably supported by the left and right connecting plates 25, and the left and right hitch arms 5 are prevented from bending in the left and right direction.

[0048]

According to the first aspect of the present invention, the strength of the cultivator cover itself can be reliably enhanced by the reinforcing body and each of the hitch arms connected to both sides of the reinforcing body. The cultivator cover can sufficiently withstand the vibration of the cultivator , and therefore, the vibration during the tilling work may deform the cover top plate of the cultivator cover, or this cover top plate may interfere with the lower part of the transmission case. In addition, the welded portion between the cover top plate and the cover side plate is not cracked due to fatigue failure or the cover top plate does not come off from the cover side plate, and therefore, a tilling apparatus having high durability against vibration during tilling work is provided. be able to.

[0049]

According to the second aspect of the present invention, the reinforcing body not only enhances the strength of the tilling section cover itself, but can also be used as a pressing plate for pressing the elastic cover which is vertically provided in front of the rotary tilling body.

[0051] According to the invention of claim 3, together with the strength of the tilling unit cover itself at the curved portion of the front end portion of the reinforcement member and the cover top plate can be more reliably reinforced, the reinforcement is covered heaven It can be easily formed by folding back the front end of the plate.

[Brief description of the drawings]

FIG. 1 is a side view of a tilling apparatus showing one embodiment of the present invention.

FIG. 2 is a plan view in which a part of the above is omitted.

FIG. 3 is an enlarged cross-sectional view of the same reinforcing member connecting portion.

FIG. 4 is a plan view of a tilling apparatus showing another embodiment.

FIG. 5 is an enlarged side view of the same reinforcing member connecting portion.

[Explanation of symbols]

 1 Machine frame 3 Bracket 5 Hitch arm 13 Rotary cultivator 15 Cultivator cover 16 Cover side plate 17 Cover top plate 20, 40 Reinforcement 24 Elastic cover 25 Connecting plate

──────────────────────────────────────────────────続 き Continued on the front page (58) Field surveyed (Int.Cl. ⁷ , DB name) A01B 33/12 A01B 59/042

Claims (3)

(57) [Claims] 1. A bracket is attached to both ends of a machine frame.
The brackets are fixed to each other and
Rotating the tillage tilling body in a freely rotatable manner
Fix the cover side plates to the
Cover covering the upper part of the rotary till between the side plates
-Fix the top plate and attach it to this cover top plate in front of this cover top plate.
Fix the reinforcements arranged in the left and right direction along the upper side, and
Hitch arms protrude integrally on both sides of the machine frame
Each of the hitch arms is placed on each side of the reinforcement.
A tilling device characterized by being connected and connected. 2. A front end of a reinforcing member and a front end of a cover top plate.
Between the tillage and the vertical
The tillage device according to claim 1, wherein an upper end portion of the bar is sandwiched . 3. The reinforcing body has a curved portion at the front end of the cover top plate.
Fold it back toward the top front of the cover
The reinforcement body is formed on the front of the cover
Hitch arms are attached to both sides of this reinforcement.
The tillage device according to claim 1, wherein a connecting plate that is detachably connected is provided .