FR2524252A1 - Fixture for wear-resistant plate e.g. on plough - uses bolt passing through self locking washer and plate to screw into threaded hole in share - Google Patents

Fixture for wear-resistant plate e.g. on plough - uses bolt passing through self locking washer and plate to screw into threaded hole in share Download PDF

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Publication number
FR2524252A1
FR2524252A1 FR8205419A FR8205419A FR2524252A1 FR 2524252 A1 FR2524252 A1 FR 2524252A1 FR 8205419 A FR8205419 A FR 8205419A FR 8205419 A FR8205419 A FR 8205419A FR 2524252 A1 FR2524252 A1 FR 2524252A1
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France
Prior art keywords
plate
screw
share
wear
threaded hole
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Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Granted
Application number
FR8205419A
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French (fr)
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FR2524252B1 (en
Inventor
Gilbert Fenet
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MACH AGRICOLES CIE FSE
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MACH AGRICOLES CIE FSE
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Publication date
Application filed by MACH AGRICOLES CIE FSE filed Critical MACH AGRICOLES CIE FSE
Priority to FR8205419A priority Critical patent/FR2524252A1/en
Publication of FR2524252A1 publication Critical patent/FR2524252A1/en
Application granted granted Critical
Publication of FR2524252B1 publication Critical patent/FR2524252B1/fr
Granted legal-status Critical Current

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Classifications

    • AHUMAN NECESSITIES
    • A01AGRICULTURE; FORESTRY; ANIMAL HUSBANDRY; HUNTING; TRAPPING; FISHING
    • A01BSOIL WORKING IN AGRICULTURE OR FORESTRY; PARTS, DETAILS, OR ACCESSORIES OF AGRICULTURAL MACHINES OR IMPLEMENTS, IN GENERAL
    • A01B15/00Elements, tools, or details of ploughs
    • A01B15/02Plough blades; Fixing the blades

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  • Life Sciences & Earth Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Soil Sciences (AREA)
  • Environmental Sciences (AREA)
  • Connection Of Plates (AREA)

Abstract

The bolted connection secures a wear resistant plate (11) e.g. on a plough share (10). Each bolt (13) passes through a smooth bored hole in the plate e.g. to screw into a threaded hole (14) in the tool (15), a secure connection being ensured by a self locking washer (16). The hole thread is cut prior to assembly with bolt (13).

Description

La présente invention vise la fixation de pièces d' usure d'une charrue telles que socs, versoirs, pointes, lames, contreseps, talons et toutes autres pièces devant être remplacées régulièrement. The present invention relates to the attachment of wearing parts of a plow such as plowshares, moldboards, spikes, blades, countersinks, heels and all other parts to be replaced regularly.

Ces.pìèces d'usure comportent des trous-qui sont soit a section rectangulaire, soit pourvus d'une entaille latérale et dont l'extrémité s'ouvrant sur la face travaillante est fraisexe. Ce's trous sont destines a recevoir des vis de fixation traversant lesdits trous et qui présentent une tête raccordée à une partie de section rectangulaire ou a un ergot la téral par une partie tronconique ayant des dimensions correspondantes à la partie fraisée du trou, les vis traversant les trous lisses de supports ou autres et recevant des écrous correspondants avec interpos-ition de rondelles. These wear parts have holes which are either rectangular in section or provided with a side cut and the end of which opens onto the working face is milled. These holes are intended to receive fixing screws passing through said holes and which have a head connected to a part of rectangular section or to a lug on the side by a frustoconical part having dimensions corresponding to the milled part of the hole, the screws passing through the smooth holes of supports or others and receiving corresponding nuts with interposition of washers.

De telles fixations présentent de nombreux inconvénients. Les vis sont chères du fait qu'elles présentent une tête fr.aisee et une partie a section carrée ou oblongue. La realEsation des trous dans les pièces travaillantes est one reuse puisqú'une partie est angulaire et que la seconde partie est fraisée. Le fraisage affaiblie la piece travaiîlantg.  Such fasteners have many drawbacks. Screws are expensive because they have a fresh head and a part with a square or oblong section. The holes made in the working parts are expensive since one part is angular and the second part is milled. Milling weakens the working part.

I1 est triés difficile d'obtenir des vis qui présentent une tête correspondant exactement au fraisage de sorte que les têtes font souvent saillie sur la pièce travaillante ce qui entratne des défauts d'aspect et gène le glissement de la terre. I1 is sorted difficult to obtain screws which have a head exactly corresponding to the milling so that the heads often protrude from the working part which causes defects in appearance and hinders the sliding of the earth.

On a constaté, de plus, que très souvent, compte tenu des chocs auxquels sont soumises les pièces travaillant, la partie angulaire du trou se déformait et qu'ainsi la vis tournait folle ce qui rendait son démontage très difficile. It has been found, moreover, that very often, taking into account the shocks to which the working parts are subjected, the angular part of the hole is deformed and that thus the screw turns madly which makes its disassembly very difficult.

Enfin, on a également remarqué que, dans certains cas, du fait du manque d'épaisseur de la pièce travallante au droit du fraisage, la tête du boulon traversait le trou et qu'ainsi on ne pouvait envisager d'user completement la pièce travaillante, celle-ci, ne pouvant être maintenue convenablement, devant être changée. Finally, it was also noted that, in certain cases, due to the lack of thickness of the working part in line with the milling, the head of the bolt passed through the hole and thus it could not be envisaged to wear out the working part completely. , which cannot be properly maintained and must be changed.

La présente invention vise à remédier a ces divers inconvénients et se rapporte au montage des pièces d'usure sur des éléments de charrue, montage dans lequel la pièce d'usure est pourvue de perçages pour le passage de vis de fixation de ladite pièce sur un support correspondant, ledit montage étant caractérisé en ce que les perçages sont, avant que lesdites pieces soient traitées, taraudés, les vis traversant des trous lisses des supports avec interposition de rondelles du type indesserrables et se vissant dans lesdits taraudages. The present invention aims to remedy these various drawbacks and relates to the mounting of wearing parts on plow elements, mounting in which the wearing part is provided with holes for the passage of fixing screws of said part on a corresponding support, said assembly being characterized in that the holes are, before said parts are treated, tapped, the screws passing through smooth holes in the supports with the interposition of washers of the indessible type and screwing into said tappings.

Grâce a cette disposition, on réalise un montage d'une très grande simplicité, le perçage et le taraudage avant le traitement thermique des pièces et leur mise en forme éventu- ellement constituant un usinage qui n'a rien de commun avec les fraisages prévus dans la techniquè antérieure et-qui sont toujours des opérations délicates. De plus, le, cout de la boulonnerie se trouve réduit de plus de 30X ce qui est treks intéressant.  Thanks to this arrangement, a very simple assembly is carried out, the drilling and the tapping before the heat treatment of the parts and their shaping possibly constituting a machining which has nothing in common with the millings provided for in prior art and which are always delicate operations. In addition, the cost of bolting is reduced by more than 30X which is very interesting.

L'invention va maintenant etre décrite avec plus de détails en se référant à un mode de réalisation particulier donne a titre d'exemple seulement et représenté au dessin annexe sur lequel
figure 1 montre en perspective éclatee un montage connu
figure 2 montre en perspective le montage selon 1 'in- vention,
figure 3 est une vue en coupe par un plan passant au droit d'un boulon.
The invention will now be described in more detail with reference to a particular embodiment given by way of example only and shown in the accompanying drawing in which
Figure 1 shows in exploded perspective a known assembly
FIG. 2 shows in perspective the assembly according to the invention,
Figure 3 is a sectional view through a plane passing to the right of a bolt.

A la figure 1 on a représenté schématiquement une partie d'un soc 1 destiné a être fixé sur un étançon 2, le soc 1 presente un trou 3 de section carréedont la partie, s'ouv- rant sur la face active du soc, est pourvue d'un fraisage 4. In Figure 1 there is shown schematically a part of a share 1 intended to be fixed on a prop 2, the share 1 has a hole 3 of square section whose part, opening on the active face of the share, is with milling 4.

L'étançon 2 est percé d'un trou lisse 5 et la fixation du soc est assuré par une vis 6 qui comporte une tige filetée 7, une partie de section carrée 8 et une tête tronconique 9 dont la convexité correspond a celle du fraisage 4. Une telle disposition correspond a la technique classique connue. The prop 2 is pierced with a smooth hole 5 and the share is secured by a screw 6 which has a threaded rod 7, a square section part 8 and a frustoconical head 9 whose convexity corresponds to that of milling 4 Such an arrangement corresponds to the known conventional technique.

Aux figures 2 et 3, on a représente le montage selon l'invention. In Figures 2 and 3, there is shown the assembly according to the invention.

Un étançon 10 comporte une plaque ll percée de trous 12 pour le passage de vis 13 destinées a se visser dans des trous taraudés 14 d'un soc 15. De préférence, entre la tête des vis 13 et la plaque il sont interposees des rondellesl6 du type indesserrable comme les rondelles Belleville. A prop 10 comprises a plate ll pierced with holes 12 for the passage of screws 13 intended to be screwed into tapped holes 14 of a plowshare 15. Preferably, between the head of the screws 13 and the plate are interposed washersl6 of the indessible type like Belleville washers.

Un versoir est, bien entendu, monté de la même façon. A moldboard is, of course, mounted in the same way.

Les pieces d'usure sont ainsi percées aux enfiroits correspondant aux passages des vis 13, les trous étant taraudés, apres quoi les pièces sont mises en forme et subissent un traitement thermique correspondant à la qualite de l'acier a obtenir. The wearing parts are thus drilled in the slots corresponding to the passages of the screws 13, the holes being tapped, after which the parts are shaped and subjected to a heat treatment corresponding to the quality of the steel to be obtained.

On conçoit que le montage représenté a la figure 1 est onereux, la vis 6 tant chèvre et le perçage du trou carre et le fraisage étant beaucoup plus onéreux que la réalisation d'un simple trou tara-udé. De plus, le fraisage 4 en diminuant l'épaisseur du soc 1 le rend plus fragile. Souvent, le trou carry est maté et la vis 6 tournant librement est très difficile a défaire. It is understood that the assembly shown in Figure 1 is expensive, the screw 6 as goat and drilling the square hole and milling being much more expensive than making a simple tara-udé hole. In addition, milling 4 by reducing the thickness of the share 1 makes it more fragile. Often the carry hole is matted and the screw 6 rotating freely is very difficult to undo.

Dans le montage représenté aux figures 2 et 3, au contraire, le soc n'est pas affaibli, le démontage est aise quelle que soit l'usure des pièces. Si la vis 13 dépasse lège- rement la surface active de la pièce travaillante, il est facile de l'araser. Les vis 13 sont de simples vis du commerce ce qui constitue une économie très importante, car il ne faut pas oublier que dans une charrue quadrisoc réversible on compte plus de cent trente points de fixation. In the assembly shown in Figures 2 and 3, on the contrary, the share is not weakened, disassembly is easy whatever the wear of the parts. If the screw 13 slightly exceeds the active surface of the working part, it is easy to level it off. The screws 13 are simple trade screws which constitutes a very significant saving, because it should not be forgotten that in a reversible quadrisoc plow there are more than one hundred and thirty fixing points.

Comme les perçages et taraudages sont effectués a.vant le traitement des pièces travaillantes, ces operations-sont faciles a effectuer. Comme certaines pièces au moment du traitement, le versoir par exemple, sont mises en forme, certains trous taraudés peuvent être légèrement déformés, mais ceci ne présente aucun inconvénient. En effet, les pièces travaillantes ne sont pas destinées a être montées ou démontees, mais une fois mises en place elles restent jusqu' a ce qu'elles soient usées, elles sont alors remplacées. Donc, si le trou taraudé est légèrement déformé, la mise en place de la vis se fera seulement un peu plus a force. As the drilling and tapping are carried out before processing the working parts, these operations are easy to perform. As some parts at the time of treatment, the moldboard for example, are shaped, some tapped holes may be slightly deformed, but this has no drawbacks. Indeed, the working parts are not intended to be assembled or disassembled, but once put in place they remain until they are worn, they are then replaced. So, if the tapped hole is slightly deformed, the placement of the screw will only be a little more force.

Bien entendu, l'invention n'est pas limitée au mode de réalisation qui vient d'être décrit et représenté, on pourra y apporter de nombreuses modifications de détails sans sortir, pour cela, du cadre de l'invention.  Of course, the invention is not limited to the embodiment which has just been described and shown, it is possible to make numerous modifications of details without departing, for this, from the scope of the invention.

Claims (1)

R E V E N?D I C A T I O N R E V E N? D I C A T I O N Perfectionnement au montage des pièces d'usure sur des éléments de charrue, tells que des socs, versoirs, pointes, contreseps, talons etc... et dans lequel la pièce d'usure est pourvue de perçages pour le passage de vis de fixation de ladite pièce sur un support correspondant, caractérisé en ce que les perçages (14) sont, avant que lesdites pièces soient traitees, taraudes, les vis (13) traver sant des trous lisses (12),des supports (10) avec interposition de rondelles (16) du type indesserrable ét se vissant dans lesdits taraudages (14).  Improvement in the assembly of wearing parts on plow elements, such as plowshares, moldboards, spikes, counterseps, heels etc ... and in which the wearing part is provided with holes for the passage of fixing screws of said part on a corresponding support, characterized in that the holes (14) are, before said parts are processed, tapped, the screws (13) passing through smooth holes (12), supports (10) with interposition of washers (16) of the indessible type and screwing into said threads (14).
FR8205419A 1982-03-30 1982-03-30 Fixture for wear-resistant plate e.g. on plough - uses bolt passing through self locking washer and plate to screw into threaded hole in share Granted FR2524252A1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
FR8205419A FR2524252A1 (en) 1982-03-30 1982-03-30 Fixture for wear-resistant plate e.g. on plough - uses bolt passing through self locking washer and plate to screw into threaded hole in share

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR8205419A FR2524252A1 (en) 1982-03-30 1982-03-30 Fixture for wear-resistant plate e.g. on plough - uses bolt passing through self locking washer and plate to screw into threaded hole in share

Publications (2)

Publication Number Publication Date
FR2524252A1 true FR2524252A1 (en) 1983-10-07
FR2524252B1 FR2524252B1 (en) 1985-03-15

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FR8205419A Granted FR2524252A1 (en) 1982-03-30 1982-03-30 Fixture for wear-resistant plate e.g. on plough - uses bolt passing through self locking washer and plate to screw into threaded hole in share

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Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1678741A (en) * 1923-04-20 1928-07-31 Mares Matthew Plow
US2313371A (en) * 1940-06-28 1943-03-09 Carnegie Illinois Steel Corp Electrodeposition of tin and its alloys
US2690112A (en) * 1949-11-15 1954-09-28 Ford Motor Co Replaceable plow share point
US2724317A (en) * 1953-06-08 1955-11-22 John M Zwaska Plow share
DE2655792A1 (en) * 1976-12-09 1978-06-15 Rudolf Dipl Ing Stegherr Plough share with replaceable cutting edges - has ceramic inserts cushioned at contact regions by soft metal and held in place by screws

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1678741A (en) * 1923-04-20 1928-07-31 Mares Matthew Plow
US2313371A (en) * 1940-06-28 1943-03-09 Carnegie Illinois Steel Corp Electrodeposition of tin and its alloys
US2690112A (en) * 1949-11-15 1954-09-28 Ford Motor Co Replaceable plow share point
US2724317A (en) * 1953-06-08 1955-11-22 John M Zwaska Plow share
DE2655792A1 (en) * 1976-12-09 1978-06-15 Rudolf Dipl Ing Stegherr Plough share with replaceable cutting edges - has ceramic inserts cushioned at contact regions by soft metal and held in place by screws

Also Published As

Publication number Publication date
FR2524252B1 (en) 1985-03-15

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