FR2689942A1 - Plow assembly. - Google Patents

Abstract

A towing assembly (10) intended to be fixed on a support (22) of a towing implement comprising a plow arm (12) and a cover plate (16) supported by one of its sides on the support ( 22) and provided with an opening (24). An assembly plate (30) resting on the other side of the support (22) and having a fork-shaped end / moth (36) which end has two teeth (38) each pierced with holes (42) comprising two sections, usually oblong in cross section, placed side by side with different centers. The perforated part of each of the teeth (36) of the assembly plate and the hole (24) of the cover plate defining a passage of generally cylindrical shape having a diameter determined when the element to be towed (12) is fixed on the support (22) and that the pin (54) is placed in the housing thus defined.

Description

Technical field The present invention relates to an assembly a

  connecting pin in particular but not excluded

  - only intended for an arm or a toothed assembly used

  -sand for a machine to work the soil or a

  be used in agriculture or any application.

  Technical considerations The furrows in agriculture and the foundations in the building are hollow, generally speaking, using metal bars or objects to

  strong teeth for digging the earth The bars

  -talliques are fixed on a plow pulled by a

  tractor by means of a drawbar, ounstal-

  -les on the tractor by a fixing in three points.

  The fixing mode allowed lateral movement

  of the set to be towed to allow the position-

  -ment of the coulter (s) according to the necessary spaces.

  It was also common to fix the arms so that they could be automatically released to avoid any damage to the arms, chassis, tools, bars and / or the tool carrying the coulter when an obstacle was encountered in the ground. typical, f the arms were also mounted so that the share (and in particular the part engaged in the ground) could vibrate to decrease the drag in the

  soil, and also to ensure better eventra-

-tion of soil to cultivate.

  In these conditions; the tree was normally fixed

  rigidly on the chassis to absorb trans-

  - transmission of vibrations from the tractor, as well as those created by the phenomenon of resonance, t // I Different structures were used to fix

  a plow arm on an agricultural chassis A configu-

  - banal ration consisted in the use of a piece to grip with an upper part stapled or bolted on the frame, on which an arm is fixed in a yoke, located at the lower part of the piece, by means of a pin or bolted and having a pin passing through two aligned holes in the yoke and arm However, due to the normal play of the bolt in the holes in the yoke and arm, this structure does not provide a fixation

  rigid with the chassis and under these conditions, the vibrations

  -tions transmitted to the point of attack in the ground are damped in an undesirable way On the other hand, the pins also ask to be locked to prevent them from moving during the use of the assembly D '

  on the other hand, given that the pins have

  -dance to twist during work, As the work is finished, the pin is often difficult to extract from

  yoke and arm holes In order to reduce the pro-

  -blades encountered to extract these pins, the latter

  eres were provided with grooves at the place where the effect of vibrations 6 was desired to manifest However, such an improvement increases the price of the pin and, taking into account that the width of said groove is critical for the force necessary to "break" the pin (less force is necessary for a smaller radius), the difference in the radii of these grooves does not allow the desired breaking point to be determined (thus,

  such grooved pins have unexpected accidents

-sibles)

  Another banal configuration consisted in fixing firm-

  the arm on the chassis or on the tool bar by placing the arm on the chassis and bolting a reinforcement on the arm and near the chassis, which will cause

  failure of the bolt in the event of an obstacle being

  - against In a variant of this assembly, the nuts screwed on the bolts are made of a softer material so that, when an obstacle is encountered by the arm, it is the nut that breaks (by tearing off the threading of the 'nut),

  and thus the bolt will not be damaged and can be r 4 u-

  -tilis & This assembly generally brings together in a rigid manner the chassis and the arm to transmit the vibrations to the

  share point of attack in the ground However, the replacement

  -How boilons and nuts in a field, after rupture of these elements is often difficult and takes time for several reasons First of all, the soft m 6 tal used J for the manufacture of nuts can foul the thread of the reused bolt so that the screwing

  a new nut on the old bolt can be difficult.

  Then, the force to be applied to the nut during the re-

  positioning of the arm must be sufficient to maintain it correctly, but not too much, to avoid tearing the

  threading a soft Fetal nut or breaking a plug

  -l em soft metal It is obvious that it will be difficult to obtain a normal tension if pieces of metal are

  remains in the old reuse bolt.

I

  It is the object of the present invention to avoid and improve

  - substantially address the disadvantages described above

  above and justify the use of this system on the

ground.

Exhibits of the invention.

  In one aspect of the present invention, a soil penetration tool assembly intended to be installed on the support of a plow is provided, comprising an elongated cha yue arm, a ploughshare mounted / on one ends of said arm and a plate of

  cover located at the other end The cover plate

  -very includes a side of the support and has a first and a second extremitl Having an opening of a determined size A fixing plate covers the other side of the support and has a first and a second end also having an opening of a size d 6 completed La It /

  first end of the cover plate and the first

  -miere end of the fixing plate are fixed together-

  -ble and a generally cylindrical pin pass

  through the plate openings and has a smaller diameter

  laughing at that of said openings The opening of the cover plate and the opening of the fixing plate comprise aligned portions', defining a passage of generally cylindrical shape having a determined diameter I when the plow arm is mounted on the support with the

pin in place.

  In another aspect of the present invention, the first end of the mounting plate and the first end

  of the cover plate each include a re-

  I edge drilled with a hole and a bolt secures all of the flanges with a certain tolerance of

  such that in the event of breakage of the assembly pin

  -wiring, the plow arm and the fixing plate go

  pivot and free itself from the accessory support to allow

  -be a rotation movement of the plow arm around

accessory holder.

  In yet another aspect of the present invention, the second end of the mounting plate is in the shape of

  fork with two teeth and the second end of the plate

i

  -that a cover is placed between the teeth where-

  - opening of the fixing plate in the two teeth includes two parts located next to each other with I

  different centers and aligned parts of openings

  -tures in each of the teeth define the gene path-

-rally cylindrical.

  In another aspect, the present invention provides a system

  -tache to attach the arm of a pe instrument-

  netration in the ground on a tie rod, comp-

  -nothing the first and second fastening elements provided to be placed on the two sides of said coupling rod f, the first elements interconnecting said fixing part and the second elements interconnecting the remote fixing parts of said first fixing parts second assembly elements including

  openings in each of the assembly pieces, each

  - none of these openings having a determined diameter, a cylindrical pin having a diameter smaller than those

  determined openings is provided The holes of the elements

  - fixing elements must be aligned to allow

passage of the pin.

  One of the holes of one of the attachment elements will preferably include two parts side by side side by side with points

  different exchanges; the 4 attachment elements, once ali-

  -gnes, must determine a cylindrical passage having the

desired diameter.

  One of the fastening elements is fixed on or forms an integral part

  -grantee of the arm The first element of interconnection

  L O o will preferably include a pivoting interconnection.

  In yet another aspect of the present invention, the longitudinal openings have an oblong shape in

their perpendicular section.

  In another aspect, the present invention provides an assembly by pin allowing the union of two

  elements, said assembly comprising a first opening

  head in one of the elements, another in the other member intended to> be aligned with said first opening, said first opening having two parts ac side with different central points, said parts having to be aligned to define a passage of cylindrical shape having a determined diameter and an assembly pin having a diameter practically identical to, or slightly smaller than said diameter determined and provided for

  cross said passage and connect said elements.

  The second hole has a lateral part against which the pin will be in free contact when said

elements will be connected.

  It is preferable that the second hole be of a diameter

  -be slightly higher than that which has been determined.

  It will be desirable that the sections of the first hole

  are oblong in their cross sections.

  An element will preferably include another distant hole aligned with the first hole and the second hole will be placed between said first hole and the others

  when said elements are assembled.

  It is also preferable that the other hole has a couple of sections side by side with different centers, the parts of each of the above sections being aligned to define a passage of cylindrical shape with a diameter equal to that determines and in

  alignment with said cylindrical passage.

  It is an object of the present invention to provide an economical, reliable and easy to use assembly, assembly protected from any damage in the event of an encounter with an obstacle shaking the assembly in a sensitive manner. It is another object of the present invention to

  provide a package that effectively transmits

  -brations at the working point of the tool in the ground to reduce the drag of the assembly and make the

  breakage of the soil intended to be cultivated.

  It is also another object of the present invention.

  -tion to provide an assembly that can

  to be easily and surely goes back up on the bar

  -plement after each break, caused by the meeting-

  be an obstacle, a pin It is yet another

  object of the present invention to provide an assembly

  age which, after breaking a pin, can be quickly and easily reassembled on the coupling bar after

  installation of a new pin.

  It is yet another object of the present invention to provide a mounting pin assembly for connecting a couple of parts in a manner allowing replacement and replacement of the pin in the event

of breakage.

  I Other aspects, objects and advantages of the present invention can be obtained by studying the drawings,

  specifications and claims appended.

Brief description of the drawings

  Figure 1 Side view of the best assembly to assemble

on a tie rod.

  Fig 2 Dimensional view similar to that of fig l,

  but showing the assembly after a break in the pin.

  Fig 3 View of assembly plate and arm

in a rest position.

  Fig 4 Side elevation view of the vacuum plate

  -assembly. Fig 5 Sectional view taken along line 5-5 of Fig 4 showing the holes through the teeth of the

assembly plate.

  Fig 6 A Sectional view along line A-A of fig 5.

  Fig 6 B Sectional view along line B-B of Fig 5, and

  Fig 6 C Sectional view along line C-C in fig 5.

Description of the best assembly

  An exemplary assembly of a penetration tool

  in soil 10, including the configuration of the gou-

  - object of the present invention, is shown in fig.

1 in a complete configuration.

  The assembly includes an arm 12 made of a resistant material such as cast or forged metals, preferably steel. The arm 12 consists of an elongated body 14, a ploughshare 15 located at the bottom of the arm 14, and a plate covering the f (top and rear 16 located S at the upper end

of the elongated body J 14.

  The elongated body 14 and the penetration tool of the

  sol 15 can be of adequate shape including the

  standard shape widely used in industry The front part of the share 15 has a pointed end 17

  to facilitate penetration into the ground.

  The covering plate 16 is slightly longer than the body of the arm and has an ear on the top extending behind one end The plate 16 also includes a neck 20 towards the rear of the ear 18 and oriented downwards of the upper part of the plate

plate 16.

  I The plate 16 is mounted directly on a coupling rod or on supports of a mechanical cultivator as will be described below Although

  the support 22 can be of any confi-

  - non-cylindrical cross-section, standard supports -

  r / I -sics generally have a square section as shown

fig 1 and 2.

  r, l The ear 18 includes a hole 24 generally oblong in its cross section and parallel to the support 22 as shown in Figs 1 and 2 A ring 26 is located on the postero-upper part of the hole 24 of the ear 18 This ring 26 has an opening 28 through which a tool such as a pencil or other such as a lever (not shown) can be threaded to assist

during assembly of the share 10 of the share.

  An L-shaped assembly plate 30 is provided

  a rim 34 and a four-shaped end

  -hard with two teeth 38 and 40, each having holes or openings 42, 43 of oblong shape As is best shown in Figs 5 and 6 AC, each of the toothed openings comprises two parts 44 and 45, which f / lr are generally of oblong section and located side by side so that the overlapping portions ft

  parts 44 and 45 define a general passage

  - cylindrical and of a determined diameter (see fig. 6 C.) An intermediate part 47 of the opening is also preferably included between the two holes 44 and 45 of each tooth 38 and 40 so that it does not '' there is no place where holes 42 and 43

  are as narrow as the cylindrical passage 46.

  Two holes 48 drilled in the rim 34 of the assembly plate 30 are aligned with two holes 49 located in the postero-lower part of the rim 20 of the bar 12 when the ploughshare 10 is placed on the support 22 with the plate 16 in contact with the bottom and the front of the support 22 and the assembly plate 30 in contact with the top and the rear of the support 22 The bolts 50 and the nuts 51 are placed in the holes 48 and 49 for

  hold the flange 34 of the assembly plate together

  -blage and the rim 20 of the cover plate when the support 22 is trapped between the assembly plate 30 and the plate covering the arm 16

as shown in fig 1.

  f When the assembly 10 is correctly mounted on the support 22, the holes 42 and 43 drilled in the teeth of the assembly plate and the hole 24 drilled in the ear are aligned with a pin 54 Said pin 54 will preferably be rather cylindrical

  with a diameter small enough to pass easily

  - only in the cylindrical passge 46 (see fig 6 C).

  And the oblong hole of the ear 24 is placed so that one of the sides of the hole 24 through or passes the pin 54 (as it should be apparent) will be used during assembly, in combination with the bolts 50 and the nuts 51 , to hold the plate 30 and the cover plate together and against the support 22 The hole 24 of the ear should include a part of roughly the same diameter as that of the pin which will be engaged therein freely in p 6 period of use The surplus of the hole 24 of the ear can be oblong in shape as specified above or of any other form allowing not only a normal tension of

  the pin but also 2 possibilities of easy removal

  -the pin of the hole 24 The hole 24 can thus be different in its dimension tran Werse from the

rounded portion.

  Such direct contact of the assembly 10 with the support 22 not only prevents any movement of the shaft 12 to maintain it in the desired direction, but also intervenes to transmit the vibrations in the support 22 through the arm 12 in work or vibrations help the tool to work the soil gently, as mentioned above. It is a fact that the rigid mounting reduces any damping effect in the connection to allow the vibrations created by the plowing work to remain focalist in the arm of the tool so that the

  vibrations help the plowing work The pre-

  - absence of these vibrations improves the crumbling effect -

  -tement of the soil and also reduces the power-

  - session n Jcessaire to tow the plow.

  Referring now to fig 2, in the hy-

  -pothese where the tow 10 assembly hits an obsta-

  like a rock, rather than damaging the surface

  -port 22 or other parts of the machine, the pin-

  -the 54 will cut to release the ear 18 from the assembly plate 30 Due to the spacing of the edge of the assembly plate 34 and that of the

  cover plate 20, as well as the enlargement

  -Holes 48 and 49 relative to the bolts 50, the assembly plate 30 and the flange 20 of the cover plate will pivot relative to each other as shown in fig 2 (without damage to the others as shown in fig 2 (without damage to the bolts 50) This action will allow the bar 12 to pivot around the support 22 until it no longer encounters an obstacle Then, the assembly to be towed -10 goes, even after the pin 54 is broken, remain attached to the support 22 as shown in fig 2.

  Consequently, the towed elements of the assembly do not risk

  -will not be damaged when passing on a

  plow 12 and, obviously under these conditions, the utility

  - reader will not have to search by field

  the plow share and / or the assembly plate 20.

  When you have a good understanding of the invention

  -tion, it must be admitted that if the pin 54 will be kept in place during normal operation, in the event that said pin 54 would be broken the parts remaining after the rupture will not be maintained (because each of the parts will no longer be in two of the holes 24, 42 and 43 and that these holes are larger than the diameter of the pin 54) Under these conditions, the pieces of the pin 54 will not get jammed as may happen with conventional structures, and also the reassembly of the assembly 10 can be done easily, without it being necessary to find the broken pieces of the pin 54 in

each of holes 24, 42 and 43.

  Then, after the pieces of the pin 54 have been removed, the assembly 10 can be fixed again on the support 22 by realigning the holes -24, 42 and; 43 (for example, using a suitable tool as a lever inserted into the ear hole 28, and pushing against the shoulder 56 of the assembly plate 30 (see fig 1)) Then the new pin 54 can be installation, in principle by a simple hammer blow This system allows a

  user working alone to replace

  -ment of pin 54 without the help of another person. If necessary and to aid assembly, the bolts 50 and nuts 51 can be loosened I 1

  or tighteners to provide secure, secure attachment

  -ant suitable transmission of vibrations as

  said above However, it is absolutely not ne-

  r-necessary to readjust the position of the nuts 51 and the bolts 50 each time a broken pin 4 is replaced In principle, the simple friction will be sufficient to hold the pin 54 in the holes 24, 42 and 43, when it will be necessary to hold together the assembly plate 30 and the ear of the assembly a

  tow and that the fixing bolts 50 will be

  -suitably tight From then on there will be no need to use any other locking means However, any other means can be used to measure

security.

  It should also be understood by those skilled in the art that the above installation requires no reduction in diameter or other form of bending at

  weak points of pin 54 as practiced

  -that to reduce the distortion In a general way, pins 54 having a smaller diameter can be used within the framework of the present invention and such pins 54 are on the one hand inexpensive,

  and on the other hand provide resistance to breakage

% f

  - be more consistent and easier to calibrate.

  / In summary, the entire plow tool l provides maximum reliability and ease of

use at reduced cost.

  Still other aspects, objects and advantages of the present invention can be obtained by a study

  specifications, drawings and claims

below.

Claims (13)

  1 An assembly of pulling equipment intended to be installed on a support for a tool for breaking up the ground, comprising: an elongated arm, a ploughshare located at one end of the arm and a cover plate located at the other end of said arm, said plate   cover being embedded on one side when   that it is mounted on said tool for drawing said cover plate having two ends, said plate having a circular opening of determined diameter; the means to fix the first end   of said cover plate on the first ex-   - end of the assembly plate, and a substantially cylindrical pin placed in said circular openings and having a determined diameter smaller than that of the openings also determined above said plates; or the circular hole drilled in said cover plate and that drilled in the assembly plate define, when aligned, a cylindrical passage of diameter determined by or   * 25 will pass and will house the pin.   2 The assembly of claim 1, where the first   -miere end of the assembly plate and the first end of the cover plate have flanges drilled each with a circular hole, and said fixing means is a bolt passing through said holes. 3 The assembly of claim 1 or claim 2, or a clearance between the first end of said cover plate and the first end of said fixing plate is maintained when said ends are fixed together and or in case of breakage of said pin, said plow arm and the assembly plate will pivot around the bolt and release the support to allow the plow arm to be separated from the support.  4 The assembly of one or other of claims 1 to 3, of said pin has a diameter less than that of the hole drilled in said assembly plate as well as that drilled in said cover plate , and o said pin passes freely J.   by at least one of the holes drilled in the as-plate   -assembly or in the cover plate when the plow arm is fixed on said support with the   pin inserted in the housing.   The assembly of any of the pre- I - /, /   -these claims or the second end of the   assembly plate is a fork with two teeth   and said second end of the cover plate   -ment is placed between said teeth and the holes in said assembly plate extending through each of said teeth,   6 The assemhlage of n'imoorte Jaquel Je des prece-   - different claims or plate holes   assembly holes in each of the teeth are combined   -sent of two sections placed one next to the other with different centers and whose aligned parts I of said opening of each of said teeth   define a Dessaze of generally cylindrical form -than.   7 The assembly of any of the Drece-   -These claims or said plow arm is   firmly fixed on said uonrt and or 'vibretor.   of the said surport are transmitted to the plow arm.   8 Laassemblaze of any annual prere-   - two claims where the holes are shaped oblong in their neck very wide.   op 2 uei Cuw s Tps-al 4 rl O, 4 Unfp unoetlo zs Ue 1 spoqa: 7- sep; 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2 o Lqwuase: p co C Lcl ui Te Ld L 9 ne-c 9 p ao 4 uuffl 4 sa e T Le La LslLdb OL 4 iodc Ins np Gf o 3 dúq Le 8 L v LL'ptds' @ é 4 Uépale U 'U úna FW tg 2 ca a Jnzla Anu au-t L e ue e Lq Wek S LP nyeu ap; D (t L ejnIan UTLUL -4 U Iep 1 Gc CUIGUP JOLL Uetc T Op GC Fn e L dp d Jlyoaax O epuuoos a'4 Tpel, ea% mod'q Xo apuooo S or L LL   -e PU L 4 + pe L% 4 uddnu%; PEI ans Goeuu '% = e SI Le ltsao I qauddrt: s tlp s W-ouu sap ur L Ultzs' e / n S Uo looo.   / v op oenbrlt E o-4 Pe L rseiq: Tpnp Gs Tum Gixa op ouoe el -np 4 Tw Loaqxo U Gl Cu l 4 t E Jn Oa S e; UUL Go tt L q O o Pap S Oa 'un jduuulle ampur opp anileqo aop S 4 'q un: 4 I Ce-Jdm OR OC Jleqo op uutfli Ls un tnt: ox-Ec al O / La outrsop la 1 o) e suom U t Lasp o Iquesse ufi -6 1 T Z 66899 Z   fixing being constituted by a bolt passing through said holes.   11 L / assembly of claim 9 or 10 or   a clearance between the first end of the plate   -covering and the first extremity of the plate d 'assembly is'preserved when said extr Jmites g   are fixed together, which, in case of breakage of the-   - said pin, will cause the plow arm and the assembly plate to pivot around the bolt and detach them from the support to allow the   plow arm to rotate around the support.   12 The assembly of any of the   -claims 9 to 11 or said pin is housed freely in at least one of the holes of the cover plate and at least one side of each of the sections of the assembly plate when said plow arm is fixed on said support with the pin implementation.   13 The assembly of any of the resales   -dications 9 to 12 o said plow arm is soli-   -directly fixed on the support, causing the trans-   transmission of the vibrations of said support to the plow arm.   14 The assembly of any of the resales   -dications 9 to 13 where the section of the assembly plate holes generally has a cross section of oblong shape.   A pin assembly system for reu-   -two two elements, said system comprising a first hole in one of said elements, a second hole in there the other element provided to be in alignment with the first hole, said first hole having a couple of sections located side by side with different centers, parts of each of said sections being aligned to define a passage of generally cylindrical shape having a determined diameter and a pin having a diameter equal to or slightly less than that of the passage above, and provided for passing through said hole and said second hole so that it joins said elements.   16 An assembly system according to the claim   -tion 15 or said hole has a portion in which l / the pin is housed freely when the elements are together.   17 assembly system according to the claims   or 16 or the second hole comprises a part having a diameter larger than the determined diameter, 18 An assembly system according to any   which of claims 15 to 17 or said sections   of the first opening are generally oblong in their cross section.   19 An assembly system according to any   of claims 15 to 18 where it is said that an element   includes another hole spaced apart and aligned with said pre-   -mier hole and where said second hole is placed between said first and the other holes when said elements are assembled.   An assembly system according to claim 19 or said other holes have a pair of sections located side by side with different centers, the   portions of each of said sections being in ali-   -lement to delimit a passage of cylindrical form-   f f -dric of a determined diameter and in alignment with said first cylindrical passage.