EP0435796A1 - Bucket provided with adjustable width for earth moving machines - Google Patents

Bucket provided with adjustable width for earth moving machines Download PDF

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Publication number
EP0435796A1
EP0435796A1 EP90430026A EP90430026A EP0435796A1 EP 0435796 A1 EP0435796 A1 EP 0435796A1 EP 90430026 A EP90430026 A EP 90430026A EP 90430026 A EP90430026 A EP 90430026A EP 0435796 A1 EP0435796 A1 EP 0435796A1
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EP
European Patent Office
Prior art keywords
bucket
sheets
lateral
central part
sheet
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Ceased
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EP90430026A
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German (de)
French (fr)
Inventor
Eric Suau
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Individual
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Individual
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Publication of EP0435796A1 publication Critical patent/EP0435796A1/en
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    • E—FIXED CONSTRUCTIONS
    • E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
    • E02F—DREDGING; SOIL-SHIFTING
    • E02F3/00—Dredgers; Soil-shifting machines
    • E02F3/04—Dredgers; Soil-shifting machines mechanically-driven
    • E02F3/28—Dredgers; Soil-shifting machines mechanically-driven with digging tools mounted on a dipper- or bucket-arm, i.e. there is either one arm or a pair of arms, e.g. dippers, buckets
    • E02F3/36—Component parts
    • E—FIXED CONSTRUCTIONS
    • E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
    • E02F—DREDGING; SOIL-SHIFTING
    • E02F3/00—Dredgers; Soil-shifting machines
    • E02F3/04—Dredgers; Soil-shifting machines mechanically-driven
    • E02F3/28—Dredgers; Soil-shifting machines mechanically-driven with digging tools mounted on a dipper- or bucket-arm, i.e. there is either one arm or a pair of arms, e.g. dippers, buckets
    • E02F3/36—Component parts
    • E02F3/40—Dippers; Buckets ; Grab devices, e.g. manufacturing processes for buckets, form, geometry or material of buckets

Definitions

  • the present invention relates to a bucket for earthmoving or excavation equipment comprising a curved bottom and two lateral flanges.
  • the technical field of the invention is that of building machines and public works.
  • Earth-moving or excavation equipment such as a mechanical shovel for example, includes an articulated arm at the end of which is located a bucket.
  • the end of the arm generally has an axis around which the bucket can rotate under the action of a handling means such as a hydraulic cylinder.
  • the bucket generally has several teeth; it is used for digging the ground, making trenches or various excavations of various geometric shapes and for moving or removing the excavated material resulting from this work.
  • Earth-moving machinery can be fitted with buckets of various widths which are chosen according to the width of the trenches to be made.
  • the buckets generally used have a width of between 30 and 90 cm, the standard widths varying from five centimeters to five centimeters, thirteen different buckets are necessary to cover this range.
  • Buckets for earth-moving machinery are already known, the width of which can be adapted according to the work to be carried out.
  • Patent application US 4,208,814 (STONE) teaches an extension device for an excavator bucket which makes it possible to increase the working width and the capacity of the bucket; this extension device has substantially the same section as the bucket and is provided with means removable attachment relative to the bucket which can cooperate with the lateral faces of the bucket; these bucket extension devices can be attached to either side of an existing bucket.
  • This device does not really have an adjustable width bucket; this device requires changing the extension device to modify the width of the bucket, which represents a significant drawback, in particular because of the time lost caused by these modifications, as well as the significant physical efforts required to produce these changes.
  • Patent application DEU 88 04 501 describes a backhoe bucket which consists of a fixed part and a mobile part, which can slide relative to each other.
  • the fixed part is provided with a double-walled bottom and a side wall
  • the movable part is provided with a bottom which slides between the walls of the fixed part; this movable part is delimited by a side wall.
  • buckets described in this application have a cantilever structure which generates high mechanical stresses; moreover, known buckets are not particularly well designed to facilitate their maintenance and / or repair.
  • the problem posed therefore consists in providing buckets of adjustable width which can be adapted to the end of articulated arms of existing earthmoving machinery and which do not need to be dismantled and replaced by another bucket at each modification of the type. of work to be done, particularly with each variation in width trenches.
  • the problem is also to provide an adjustable width bucket which is impact resistant, which is not too heavy and whose mechanical design does not generate excessive mechanical stress, and allows for easy maintenance and servicing .
  • an earthmoving bucket of adjustable width comprising a central part of longitudinal axis XX1, which can be fixed to an arm of an earthmoving machine and which can be articulated at the end of said arm around an axis of rotation perpendicular to said longitudinal axis, which central part comprises a curved bottom comprising an internal sheet and an external sheet, and said bucket comprises 2 lateral parts substantially symmetrical with respect to a median longitudinal plane of said bucket, and each of said parts side has a curved side bottom which has an inner side sheet and an outer side sheet, which inner and outer side sheets are joined by spacers.
  • a bucket according to the invention comprises a central beam which extends between said inner and outer sheets of said curved bottom and whose longitudinal axis extends in said median longitudinal plane of said bucket, which central beam rigidly connects said inner sheets and external sheets of said central part, which internal and external sheets of said central part delimit a blade-shaped space whose faces are parallel and whose thickness is little greater than the thickness of said curved lateral bottom of said lateral parts.
  • a bucket according to the invention comprises two identical double-acting cylinders, which each comprise a body and a rod, which cylinders extend along a transverse axis of said bucket, and said bucket is such that a first end of each of said cylinders is fixed by removable fixing means on said central beam.
  • said removable fixing means are constituted by a threaded assembly device, comprising a male part and a female part provided with threads or male and female portion of net respectively, with large steps.
  • said removable fixing means are constituted by a bayonet assembly device.
  • said spacers are formed in part at least by sections of hollow tubes which extend parallel to said transverse axis of said bucket.
  • said central part comprises means for blocking said removable fixing means and comprises at least one inspection hatch which allows easy access to said removable fixing means and to said blocking means.
  • the bucket according to the invention further comprises four slides with reduced clearance and of large section which extend parallel to said transverse axis of said bucket and which are arranged symmetrically with respect to said median longitudinal plane, and preferably two of said slides. on the upper rear end of said bucket and said slides each include a limit switch.
  • the width of each of said lateral parts is substantially equal to the half width of said central part and said bucket is such that the stroke of said lateral parts is substantially equal to half of said half width of said central part, and said half width is between 400 millimeters and 800 millimeters.
  • At least one of said interior and exterior sheets of said central part comprises at least one cleaning orifice which allows the injection of a cleaning product into the space delimited by said interior and exterior sheets.
  • said interior and exterior sheets of said bottom of said central portion and said lateral interior and lateral exterior sheets are thin sheets, preferably sheets of thickness less than or equal to 6 millimeters.
  • said central part comprises, on the external face of said external sheet, impact protection reinforcements which extend parallel to said median longitudinal plane and which follows the curve of said external sheet.
  • the cup according to the invention comprises removable teeth and screed-shaped tooth supports rigidly connected to said cup and said teeth fit at their ends. rear in said tooth support, and said teeth are immobilized by pins which extend parallel to said transverse axis of said bucket.
  • edges of said sheets of said bottom of said central part parallel to said longitudinal axis comprise an inclined plane which connects the interior and exterior surfaces of said sheets and whose intersection with said interior surfaces forms a projecting edge, and said surfaces of said sheets of said sheets.
  • lateral parts and of said central part are perfectly smooth and parallel and the distance between said surfaces is very small so that said interior and exterior sheets of said central portion and said interior and exterior side plates of said lateral portions constitute in themselves guide means, and said edges constitute scrapers which prevent foreign bodies from entering said cavity.
  • a bucket according to the invention which has two symmetrical lateral parts makes it possible to have a bucket of very simple mechanical design but whose mechanical characteristics allow it to withstand the significant forces to which it must be submitted.
  • a bucket according to the invention which comprises lateral parts provided with a curved bottom which comprises an internal lateral sheet and an external lateral sheet joined by spacers, can withstand significant shocks either from inside the bucket or from the outside of the bucket, which shocks may in certain cases cause deformation of said lateral internal sheets or lateral external sheets, but without this hindering the sliding of said lateral part into said central part.
  • a bucket according to the invention which comprises a central beam in the median longitudinal plane of said bucket, makes it possible to arrange inside said central part, on either side of said beam, said space in the form of a blade with faces parallel which allows the sliding of said side parts, and which allows the fixing in a protected area of one end of said displacement cylinders of said side parts.
  • a bucket according to the invention which comprises cylinders fixed by removable fastening means, particularly by a bayonet device or a threaded assembly device with large steps, allow easy installation on site, by a rotation of the actuator of the order of a turn or a portion of turn, in the case of replacement of a defective cylinder.
  • a cup according to the invention which comprises spacers, and preferably sections of hollow tubes which extend parallel to said transverse axis of said cup, and the sheets of which are thin sheets of thickness of the order of 3 to 5 millimeters , allow to have a relatively light and very rigid bucket.
  • Figure 1 illustrates in longitudinal section a bucket of adjustable width according to the invention and according to a first embodiment.
  • Figure 2 is a half plan view of an adjustable width bucket according to another embodiment.
  • Figure 3 is a view along III-III of Figure 2.
  • FIG. 4 is a partial section on a large scale of detail A of FIG. 3.
  • Figure 5 is a partial perspective view of an embodiment of an adjustable width bucket according to the invention.
  • a bucket of adjustable width comprises a central part which comprises an inner sheet 7 and an outer sheet 8 which are curved which form the curved bottom of said bucket; said bucket has two lateral parts which each have an inner lateral sheet 43 and an outer lateral sheet 44 which are joined by spacers 45 and 51; the spacers marked 45 in FIG.
  • the spacers identified 51 can be constituted by sections of hollow tubes preferably square section; in an exemplary embodiment of a bucket of adjustable width according to the invention, said hollow tubes 51 have a thickness of approximately 25 millimeters and said inner 7 and outer 8 sheets of said central portion of said bucket and said inner side 43 and outer side 44 sheets of said side portion of said bucket are of a thickness substantially equal to 3 millimeters; each of said lateral parts of said bucket comprises a lateral flange 3; we see that slides 54 are provided which may for example comprise a male part 54a rigidly connected to said lateral part of said bucket and a female part 54b rigidly connected to said central part of said bucket.
  • a slide 54 comprising said parts 54a and 54b which have a profile in the shape of a dovetail and that in the rear upper part of said bucket there is provided a second slide whose male 54a and female 54b parts are substantially T-shaped.
  • said lateral lateral 43 and lateral lateral 44 sheets are joined on their front edges by a weld bead and are also fixed by welding on said male part 54a of said slide located on the upper rear part of said bucket ( above in the figure).
  • said inner sheet 7 and said outer sheet 8 of said central part of said bucket are connected on their front edges by a flat iron 57 to which they are welded, which flat iron 57 can advantageously be made of high-strength steel which is unlikely to wear out; it can be seen that said sheets 7 and 8 are welded at their other end on their rear upper edge to said female T-shaped portion 54b of said second slide of said bucket; it can be seen in this figure, that said internal lateral sheet 43, said lateral external sheet 44 and said slides and spacers and said sections of hollow tubes delimit spaces 58; thus, it is advantageously possible to have inside one of these spaces 58 all or part of the rod 49 or of the body of a double-acting cylinder which will make it possible to actuate
  • protective reinforcements 56 are provided on the rear external face of said bucket which can for example be welded to said outer sheet of said central part of said bucket so as to protect said bucket against shocks.
  • FIG. 2 which is a half plan view of a bucket of adjustable width according to the invention
  • said bucket can be articulated around an axis YY 2 at the end of an arm 5 for example a mechanical shovel arm
  • said bucket of adjustable width comprises connecting means 6 between the central part 40 of said bucket and said arm of said earthmoving machine
  • said bucket has a central portion 40 which is provided on its front edge with at least one tooth 1 and which is provided on its rear upper edge with a female part 54b of a slide
  • said central part 40 is advantageously symmetrical with respect to its longitudinal axis XX 1 contained in a median longitudinal plane P 1 , and is connected by said slides and sliding means which in particular comprise a jack 47, to said lateral parts 41 which are advantageously symmetrical with respect to said median longitudinal plane
  • said curved bottom 2 of said central part which is constituted by said inner sheet and said outer sheet has a central beam 46 which extends between said inner and outer sheets of said curved bottom 2, in said median longitudinal plane P
  • said lateral part 41 comprises spacers 45, a tooth 1 and comprises at its rear upper end a male part 54a of slide which can cooperate with said female part 54b of the same slide rigidly fixed to said central part of said bucket, so as to guide said lateral part in its sliding movements relative to said central part; it can be seen that said lateral part 41 is delimited on its outer edge by a lateral flange 3.
  • FIG. 3 which is a view along III-III of FIG. 2, it can be seen that said bucket comprises said central part 40 which extends symmetrically on either side of said median longitudinal plane P1 and comprises two lateral parts 41 which extend symmetrically with respect to said median longitudinal plane P 1 and which can slide between said inner sheet 7 and said outer sheet 8 of said central part thanks to a space 19 located between said sheets whose thickness is substantially equal to the thickness from the bottom of said side portions 41; it can be seen that according to the invention, said inner 7 and outer 8 sheets of said central part are rigidly connected together by said central beam 46 which extends along said plane P 1 ; we also see that on both sides of said median longitudinal plane P 1 , are provided on their rear upper edges of said central part 40 of said bucket, female parts 54b of slide which can cooperate with male parts 54a of slide attached to said bottom of said side portions of said bucket; said lateral parts are delimited at their lateral ends by a lateral flange 3 and can slide in said space 19 along a transverse axis YY 1 .
  • the width L 1 of said lateral parts of said bucket is substantially equal to the 1/2 width L 2 of said central part, and the sliding travel C of said lateral parts relative to said central part is substantially equal to half of said width L 1 is substantially equal to half the 1/2 width L 2 .
  • said lateral parts 41 are shown in the position where they are projecting at most with respect to said central part; it is obvious that said male and female parts of said slides could be inverted and located respectively on said central part and said lateral parts of said bucket.
  • the surfaces 27 and 29 of said inner sheet 43 of said lateral part and inner sheet 7 of said central part on the one hand, of said lateral outer sheet 44 and of said outer sheet 8 of said central part on the other hand, are perfectly smooth and parallel and the distance between said surfaces 27 and 29 is very small so that said sheets 7, 43 on the one hand and 8, 44 on the other constitute means for guiding said lateral part with respect to said central part in the sliding movement along said transverse axis of said bucket, and said edges 30 constitute scrapers which prevent the introduction into said space 19 of foreign bodies such as earth, stones etc.
  • FIG. 5 which shows in partial perspective an embodiment of a bucket of adjustable width according to the invention
  • said bucket comprises said central part 40 and two lateral parts 41 which are symmetrical with respect to the median longitudinal plane P 1 of said bucket; in this figure, said lateral part 41 situated on the left is illustrated in a maximum open position while said lateral part 41 situated on the right in the figure is shown in a position where it is completely retracted inside said space situated at the interior of said central part.
  • said lateral part 41 has a lateral flange 3 and a lateral bottom 42 which can slide between said inner 7 and outer 8 sheets of said curved bottom of said central part of said bucket.
  • said central beam 46 is curved and follows the curvature of said sheets 7 and 8 which it connects rigidly, extending in said median longitudinal plane P 1 ; it can be seen that said central beam 46 serves as a support by means of fixing means 50 situated on these lateral faces to the body 48 of a jack provided with a rod 49, which rod is fixed on said lateral part 41 situated on the right on the figure and which cylinder allows the sliding of said lateral part in said central part.
  • a hatch for inspection 53 can be provided for example in said inner sheet 7 of said central part in order to allow easy access to said fixing means 50 of said jack on said central beam and to blocking means of said possible fixing means in order to allow mounting and rapid disassembly of said cylinder in case of replacement thereof.
  • said inner sheet 7 of said central part is provided with two cleaning orifices 55 located on either side of said central beam, which orifices 55 make it possible to inject a cleaning product into the inside the space delimited by the sheets 7 and 8 so as to evacuate foreign bodies which could have entered inside said space 19 and which could hinder the operation of said bucket and the sliding of said lateral parts relative to said central part.
  • teeth 1 which are removable teeth which are fixed on a tooth support 1a rigidly fixed on the front edge of said central part, which support 1a is in the form of a yoke and is provided with a bore in which a pin can be slid which will immobilize said removable tooth; in this way, when said teeth are worn or damaged they can be easily replaced.
  • said pins are located along a horizontal axis and more precisely along a transverse axis parallel to said transverse axis YY 1 of said bucket.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Mining & Mineral Resources (AREA)
  • Civil Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Structural Engineering (AREA)
  • Shovels (AREA)

Abstract

The invention concerns a bucket for an earth moving or excavation machine. A bucket comprises a central section (40) which comprises a curved bottom (2) comprising an inside metal sheet (7) and an outside metal sheet (7) and the said bucket comprises lateral sections (41) which are substantially symmetrical with respect to a longitudinal median plane of the said bucket and each of the said lateral sections comprises a curved lateral bottom which comprises an inside lateral metal sheet (43) and an outside lateral metal sheet (44) which are joined together by cross-pieces (45), (51). The technical field of the invention is that of building and Public Works machines. <IMAGE>

Description

La présente invention concerne un godet pour engins de terrassement ou d'excavation comportant un fond incurvé et deux flasques latéraux.The present invention relates to a bucket for earthmoving or excavation equipment comprising a curved bottom and two lateral flanges.

Le domaine technique de l'invention est celui des machines de bâtiment et Travaux Publics.The technical field of the invention is that of building machines and public works.

Les engins de terrassement ou d'excavation tels qu'une pelle mécanique par exemple, comportent un bras articulé à l'extrémité duquel est situé un godet.Earth-moving or excavation equipment such as a mechanical shovel for example, includes an articulated arm at the end of which is located a bucket.

L'extrémité du bras comporte généralement un axe autour duquel le godet peut tourner sous l'action d'un moyen de manipulation tel qu'un vérin hydraulique. Le godet comporte généralement plusieurs dents; il est utilisé pour creuser le sol, en réalisant des tranchées ou diverses excavations de forme géométriques variées et pour déplacer ou évacuer les déblais résultant de ces travaux.The end of the arm generally has an axis around which the bucket can rotate under the action of a handling means such as a hydraulic cylinder. The bucket generally has several teeth; it is used for digging the ground, making trenches or various excavations of various geometric shapes and for moving or removing the excavated material resulting from this work.

Les engins de terrassement peuvent être équipés de godets de diverses largeurs qui sont choisis en fonction de la largeur des tranchées à réaliser.Earth-moving machinery can be fitted with buckets of various widths which are chosen according to the width of the trenches to be made.

Les godets généralement employés ont une largeur comprise entre 30 et 90 cm, les largeurs standard variant de cinq centimètres en cinq centimètres, treize godets différents sont nécessaires pour couvrir cette plage.The buckets generally used have a width of between 30 and 90 cm, the standard widths varying from five centimeters to five centimeters, thirteen different buckets are necessary to cover this range.

La variété et la précision des travaux à réaliser par les conducteurs de ces engins les obligent à changer fréquemment de type de godet, ce qui entraîne des pertes de temps; par ailleurs, ces démontages et remontages de godets sont des tâches pénibles du fait de leur poids important. De plus, l'obligation d'équiper chaque engin de plusieurs modèles de godets augmente sensiblement le coût d'investissement et d'entretien de ces engins.The variety and precision of the work to be carried out by the operators of these machines means that they have to change the type of bucket frequently, which leads to loss of time; moreover, these dismantling and reassembly of buckets are tedious tasks because of their significant weight. In addition, the obligation to equip each machine with several models of buckets significantly increases the cost of investment and maintenance of these machines.

On connaît déjà des godets pour engins de terrassement dont la largeur peut être adaptée en fonction des travaux à réaliser.Buckets for earth-moving machinery are already known, the width of which can be adapted according to the work to be carried out.

La demande de brevet US 4 208 814 (STONE) enseigne un dispositif d'extension pour un godet d'excavatrice qui permet d'augmenter la largeur de travail et la capacité du godet; ce dispositif d'extension a sensiblement la même section que le godet et est pourvu de moyens d'attache amovibles par rapport au godet qui peuvent coopérer avec les faces latérales du godet; ces dispositifs d'extension de godet peuvent être fixés d'un côté ou de l'autre d'un godet existant.Patent application US 4,208,814 (STONE) teaches an extension device for an excavator bucket which makes it possible to increase the working width and the capacity of the bucket; this extension device has substantially the same section as the bucket and is provided with means removable attachment relative to the bucket which can cooperate with the lateral faces of the bucket; these bucket extension devices can be attached to either side of an existing bucket.

Ce dispositif ne permet pas de disposer véritablement d'un godet à largeur réglable; ce dispositif nécessite de changer le dispositif d'extension pour modifier la largeur du godet, ce qui représente un inconvénient important à cause notamment des pertes de temps entraînées par ces modifications, ainsi que des efforts physiques importants à produire pour effectuer ces changements.This device does not really have an adjustable width bucket; this device requires changing the extension device to modify the width of the bucket, which represents a significant drawback, in particular because of the time lost caused by these modifications, as well as the significant physical efforts required to produce these changes.

La demande de brevet DEU 88 04 501 (MACKL) décrit un godet de pelleteuse qui est constitué d'une partie fixe et d'une partie mobile, qui peuvent coulisser l'une par rapport à l'autre. La partie fixe est pourvue d'un fond à double paroi et d'une paroi latérale, et la partie mobile est pourvue d'un fond qui coulisse entre les parois de la partie fixe; cette partie mobile est délimitée par une paroi latérale.Patent application DEU 88 04 501 (MACKL) describes a backhoe bucket which consists of a fixed part and a mobile part, which can slide relative to each other. The fixed part is provided with a double-walled bottom and a side wall, and the movable part is provided with a bottom which slides between the walls of the fixed part; this movable part is delimited by a side wall.

Les godets connus décrits dans cette demande présentent des inconvénients importants: on sait en effet que les godets de terrassement sont utilisés dans des conditions très sévères et sont notamment soumis à des chocs importants; dans le cas des godets de largeur fixe, les déformations des parois du godet n'entraînent pas de désagréments particuliers, ce qui n'est pas le cas pour les godets qui comportent une partie mobile qui est soumise à des chocs, qui peut se déformer, et qui du fait de ces déformations ne pourra plus coulisser librement par rapport à la partie fixe du godet; on pourrait bien sûr envisager de réaliser ces godets avec des tôles de très forte épaisseur, afin que ces tôles ne se déforment pas, mais cela conduirait à un supplément de poids et de prix important.The known buckets described in this application have significant drawbacks: it is known that earthmoving buckets are used under very severe conditions and are in particular subjected to significant shocks; in the case of fixed-width buckets, the deformations of the walls of the bucket do not cause any particular inconvenience, which is not the case for buckets which have a movable part which is subjected to shocks, which can deform , and which due to these deformations can no longer slide freely relative to the fixed part of the bucket; one could of course consider making these buckets with very thick sheets, so that these sheets do not deform, but this would lead to an additional weight and significant price.

Par ailleurs, les godets décrits dans cette demande ont une structure en porte-à-faux qui est génératrice de contraintes mécaniques élevées; par ailleurs, les godets connus ne sont pas particulièrement bien conçus pour faciliter leur entretien et/ou leur réparation.Furthermore, the buckets described in this application have a cantilever structure which generates high mechanical stresses; moreover, known buckets are not particularly well designed to facilitate their maintenance and / or repair.

Le problème posé consiste donc à procurer des godets de largeur réglable qui peuvent s'adapter à l'extrémité de bras articulés d'engins de terrassement existants et qui ne nécessitent pas d'être démontés et remplacés par un autre godet à chaque modification du type de travaux à réaliser, particulièrement à chaque variation de largeur des tranchées.The problem posed therefore consists in providing buckets of adjustable width which can be adapted to the end of articulated arms of existing earthmoving machinery and which do not need to be dismantled and replaced by another bucket at each modification of the type. of work to be done, particularly with each variation in width trenches.

Le problème posé est également de procurer un godet de largeur réglable qui soit résistant aux chocs, qui ne soit pas d'un poids trop important et dont la conception mécanique ne génère pas de contraintes mécaniques trop importantes, et permette un entretien et une maintenance faciles.The problem is also to provide an adjustable width bucket which is impact resistant, which is not too heavy and whose mechanical design does not generate excessive mechanical stress, and allows for easy maintenance and servicing .

Une solution au problème posé consiste à procurer un godet de terrassement de largeur réglable comportant une partie centrale d'axe longitudinal XX1, qui peut être fixée à un bras d'un engin de terrassement et qui peut être articulée à l'extrémité dudit bras autour d'un axe de rotation perpendiculaire audit axe longitudinal, laquelle partie centrale comporte un fond incurvé comportant une tôle intérieure et une tôle extérieure, et ledit godet comporte 2 parties latérales sensiblement symétriques par rapport à un plan longitudinal médian dudit godet, et chacune desdites parties latérales comporte un fond latéral incurvé qui comporte une tôle latérale intérieure et une tôle latérale extérieure, lesquelles tôles latérales intérieures et extérieures sont réunies par des entretoises.One solution to the problem posed consists in providing an earthmoving bucket of adjustable width comprising a central part of longitudinal axis XX1, which can be fixed to an arm of an earthmoving machine and which can be articulated at the end of said arm around an axis of rotation perpendicular to said longitudinal axis, which central part comprises a curved bottom comprising an internal sheet and an external sheet, and said bucket comprises 2 lateral parts substantially symmetrical with respect to a median longitudinal plane of said bucket, and each of said parts side has a curved side bottom which has an inner side sheet and an outer side sheet, which inner and outer side sheets are joined by spacers.

Avantageusement, un godet selon l'invention comporte une poutre centrale qui s'étend entre lesdites tôles intérieures et extérieures dudit fond incurvé et dont l'axe longitudinal s'étend dans ledit plan longitudinal médian dudit godet, laquelle poutre centrale relie rigidement lesdites tôles intérieures et tôles extérieures de ladite partie centrale, lesquelles tôles intérieures et extérieures de ladite partie centrale délimitent un espace en forme de lame dont les faces sont parallèles et dont l'épaisseur est peu supérieure à l'épaisseur dudit fond latéral incurvé desdites parties latérales.Advantageously, a bucket according to the invention comprises a central beam which extends between said inner and outer sheets of said curved bottom and whose longitudinal axis extends in said median longitudinal plane of said bucket, which central beam rigidly connects said inner sheets and external sheets of said central part, which internal and external sheets of said central part delimit a blade-shaped space whose faces are parallel and whose thickness is little greater than the thickness of said curved lateral bottom of said lateral parts.

Avantageusement, un godet selon l'invention comporte deux vérins à double effet identiques, qui comportent chacun un corps et une tige, lesquels vérins s'étendent selon un axe transversal dudit godet, et ledit godet est tel qu'une première extrémité de chacun desdits vérins est fixée par des moyens de fixation amovible sur ladite poutre centrale.Advantageously, a bucket according to the invention comprises two identical double-acting cylinders, which each comprise a body and a rod, which cylinders extend along a transverse axis of said bucket, and said bucket is such that a first end of each of said cylinders is fixed by removable fixing means on said central beam.

Avantageusement, lesdits moyens de fixation amovibles sont constitués par un dispositif d'assemblage fileté, comportant une partie mâle et une partie femelle munies de filets ou de portion de filet respectivement mâle et femelle, à grands pas.
Alternativement, lesdits moyens de fixation amovibles sont constitués par un dispositif d'assemblage à baïonnette.Advantageously, said removable fixing means are constituted by a threaded assembly device, comprising a male part and a female part provided with threads or male and female portion of net respectively, with large steps.
Alternatively, said removable fixing means are constituted by a bayonet assembly device.

Avantageusement, lesdites entretoises sont constituées en partie au moins par des tronçons de tubes creux qui s'étendent parallèlement audit axe transversal dudit godet.Advantageously, said spacers are formed in part at least by sections of hollow tubes which extend parallel to said transverse axis of said bucket.

Avantageusement, ladite partie centrale comporte des moyens de blocage desdits moyens de fixation amovibles et comporte au moins une trappe de visite qui permet un accès aisé auxdits moyens de fixation amovibles et auxdits moyens de blocage.Advantageously, said central part comprises means for blocking said removable fixing means and comprises at least one inspection hatch which allows easy access to said removable fixing means and to said blocking means.

Avantageusement, le godet selon l'invention comporte en outre quatre glissières à jeu réduit et de forte section qui s'étendent parallèlement audit axe transversal dudit godet et qui sont disposées symétriquement par rapport audit plan longitudinal médian, et de préférence deux desdites glissières sont situées sur l'extrémité arrière supérieure dudit godet et lesdites glissières comportent chacune un dispositif de fin de course.Advantageously, the bucket according to the invention further comprises four slides with reduced clearance and of large section which extend parallel to said transverse axis of said bucket and which are arranged symmetrically with respect to said median longitudinal plane, and preferably two of said slides. on the upper rear end of said bucket and said slides each include a limit switch.

Avantageusement, la largeur de chacune desdites parties latérales est sensiblement égale à la demi largeur de ladite partie centrale et ledit godet est tel que la course desdites parties latérales est sensiblement égale à la moitié de ladite demi largeur de ladite partie centrale, et ladite demi largeur est comprise entre 400 millimètres et 800 millimètres.Advantageously, the width of each of said lateral parts is substantially equal to the half width of said central part and said bucket is such that the stroke of said lateral parts is substantially equal to half of said half width of said central part, and said half width is between 400 millimeters and 800 millimeters.

Avantageusement, l'une au moins desdites tôles intérieures et extérieures de ladite partie centrale comporte au moins un orifice de nettoyage qui permet l'injection d'un produit de nettoyage dans l'espace délimité par lesdites tôles intérieures et extérieures.Advantageously, at least one of said interior and exterior sheets of said central part comprises at least one cleaning orifice which allows the injection of a cleaning product into the space delimited by said interior and exterior sheets.

Avantageusement, lesdites tôles intérieures et extérieures dudit fond de ladite partie centrale et lesdites tôles intérieures latérales et extérieures latérales sont des tôles minces, de préférence des tôles d'épaisseur inférieure ou égale à 6 millimètres.Advantageously, said interior and exterior sheets of said bottom of said central portion and said lateral interior and lateral exterior sheets are thin sheets, preferably sheets of thickness less than or equal to 6 millimeters.

Avantageusement, ladite partie centrale comporte sur la face externe de ladite tôle extérieure des renforts de protection contre les chocs qui s'étendent parallèlement audit plan longitudinal médian et qui épouse la courbe de ladite tôle extérieure.Advantageously, said central part comprises, on the external face of said external sheet, impact protection reinforcements which extend parallel to said median longitudinal plane and which follows the curve of said external sheet.

Avantageusement, le godet selon l'invention comporte des dents amovibles et des supports de dents en forme de chape liés rigidement audit godet et lesdites dents s'emboîtent par leurs extrémités arrières dans ledit support de dents, et lesdites dents sont immobilisées par des goupilles qui s'étendent parallèlement audit axe transversal dudit godet.Advantageously, the cup according to the invention comprises removable teeth and screed-shaped tooth supports rigidly connected to said cup and said teeth fit at their ends. rear in said tooth support, and said teeth are immobilized by pins which extend parallel to said transverse axis of said bucket.

Avantageusement, les bords desdites tôles dudit fond de ladite partie centrale parallèles audit axe longitudinal, comportent un plan incliné qui relie les surfaces intérieures et extérieures desdites tôles et dont l'intersection avec lesdites surfaces intérieures forme une arête saillante, et lesdites surfaces desdites tôles desdites parties latérales et de ladite partie centrale sont parfaitement lisses et parallèles et la distance entre lesdites surfaces est très faible de sorte que lesdites tôles intérieures et extérieures de ladite partie centrale et lesdites tôles latérales intérieures et latérales extérieures desdites parties latérales constituent en elles-mêmes des moyens de guidage, et lesdites arêtes constituent des racleurs qui interdisent aux corps étrangers de pénétrer dans ladite cavité.Advantageously, the edges of said sheets of said bottom of said central part parallel to said longitudinal axis, comprise an inclined plane which connects the interior and exterior surfaces of said sheets and whose intersection with said interior surfaces forms a projecting edge, and said surfaces of said sheets of said sheets. lateral parts and of said central part are perfectly smooth and parallel and the distance between said surfaces is very small so that said interior and exterior sheets of said central portion and said interior and exterior side plates of said lateral portions constitute in themselves guide means, and said edges constitute scrapers which prevent foreign bodies from entering said cavity.

Les avantages procurés par l'invention sont nombreux: un godet selon l'invention qui comporte deux parties latérales symétriques permet de disposer d'un godet de conception mécanique très simple mais dont les caractéristiques mécaniques lui permettent de résister aux efforts importants auxquels il doit être soumis.The advantages provided by the invention are numerous: a bucket according to the invention which has two symmetrical lateral parts makes it possible to have a bucket of very simple mechanical design but whose mechanical characteristics allow it to withstand the significant forces to which it must be submitted.

Un godet selon l'invention qui comporte des parties latérales munies d'un fond incurvé qui comporte une tôle latérale intérieure et une tôle latérale extérieure réunies par des entretoises, peut encaisser des chocs importants soit de l'intérieur du godet, soit de l'extérieur du godet, lesquels chocs pourront dans certains cas entraîner une déformation desdites tôles intérieures latérales ou tôles extérieures latérales, mais sans que cela ne gêne le coulissement de ladite partie latérale dans ladite partie centrale.A bucket according to the invention which comprises lateral parts provided with a curved bottom which comprises an internal lateral sheet and an external lateral sheet joined by spacers, can withstand significant shocks either from inside the bucket or from the outside of the bucket, which shocks may in certain cases cause deformation of said lateral internal sheets or lateral external sheets, but without this hindering the sliding of said lateral part into said central part.

Un godet selon l'invention qui comporte une poutre centrale dans le plan longitudinal médian dudit godet, permet d'aménager à l'intérieur de ladite partie centrale, de part et d'autre de ladite poutre, ledit espace en forme de lame à faces parallèles qui permet le coulissement desdites parties latérales, et qui permet la fixation dans une zone protégée d'une extrémité desdits vérins de déplacement desdites parties latérales.A bucket according to the invention which comprises a central beam in the median longitudinal plane of said bucket, makes it possible to arrange inside said central part, on either side of said beam, said space in the form of a blade with faces parallel which allows the sliding of said side parts, and which allows the fixing in a protected area of one end of said displacement cylinders of said side parts.

Un godet selon l'invention qui comporte des vérins fixés par des moyens de fixation amovibles, particulièrement par un dispositif à baïonnette ou un dispositif d'assemblage fileté à grands pas, permettent une mise en place facile sur chantier, par une rotation du vérin de l'ordre d'un tour ou d'une portion de tour, dans le cas de remplacement d'un vérin défectueux.A bucket according to the invention which comprises cylinders fixed by removable fastening means, particularly by a bayonet device or a threaded assembly device with large steps, allow easy installation on site, by a rotation of the actuator of the order of a turn or a portion of turn, in the case of replacement of a defective cylinder.

Un godet selon l'invention qui comporte des entretoises, et de préférence des tronçons de tubes creux qui s'étendent parallèlement audit axe transversal dudit godet, et dont les tôles sont des tôles minces d'épaisseur de l'ordre de 3 à 5 millimètres, permettent de disposer d'un godet relativement léger et très rigide.A cup according to the invention which comprises spacers, and preferably sections of hollow tubes which extend parallel to said transverse axis of said cup, and the sheets of which are thin sheets of thickness of the order of 3 to 5 millimeters , allow to have a relatively light and very rigid bucket.

Les nombreux avantages procurés par l'invention seront mieux compris au travers de la description suivante, qui se réfère aux dessins annexés, qui illustrent sans aucun caractère limitatif des modes particuliers de réalisation de godets de largeur réglable selon l'invention.The numerous advantages provided by the invention will be better understood through the following description, which refers to the appended drawings, which illustrate without any limiting character particular embodiments of buckets of adjustable width according to the invention.

La figure 1 illustre en coupe longitudinale un godet de largeur réglable selon l'invention et selon un premier mode de réalisation.Figure 1 illustrates in longitudinal section a bucket of adjustable width according to the invention and according to a first embodiment.

La figure 2 est une demi-vue en plan d'un godet de largeur réglable selon un autre mode de réalisation.Figure 2 is a half plan view of an adjustable width bucket according to another embodiment.

La figure 3 est une vue selon III-III de la figure 2.Figure 3 is a view along III-III of Figure 2.

La figure 4 est une coupe partielle à grande échelle du détail A de la figure 3.FIG. 4 is a partial section on a large scale of detail A of FIG. 3.

La figure 5 est une vue partielle en perspective d'un mode de réalisation d'un godet de largeur réglable selon l'invention.Figure 5 is a partial perspective view of an embodiment of an adjustable width bucket according to the invention.

Sur la figure 1, on voit qu'un godet de largeur réglable selon l'invention comporte une partie centrale qui comporte une tôle intérieure 7 et une tôle extérieure 8 incurvées qui forment le fond incurvé dudit godet; ledit godet comporte deux parties latérales qui comportent chacune une tôle latérale intérieure 43 et une tôle latérale extérieure 44 qui sont réunies par des entretoises 45 et 51; les entretoises repérées 45 sur la figure 1 peuvent être constituées par exemple par des fers de section sensiblement trapézoïdale sur lesquels lesdites tôles sont soudées, par exemple par point, dans la partie avant et les entretoises repérées 51 peuvent être constituées par des tronçons de tubes creux de préférence de section carrée; dans un exemple de réalisation d'un godet de largeur réglable selon l'invention, lesdits tubes creux 51 ont une épaisseur d'environ 25 millimètres et lesdites tôles intérieures 7 et extérieures 8 de ladite partie centrale dudit godet et lesdites tôles latérales intérieures 43 et latérales extérieures 44 de ladite partie latérale dudit godet sont d'une épaisseur sensiblement égale à 3 millimètres; chacune desdites parties latérales dudit godet comporte un flasque 3 latéral; on voit que des glissières 54 sont prévues qui peuvent par exemple comporter une partie mâle 54a liée rigidement à ladite partie latérale dudit godet et une partie femelle 54b liée rigidement à ladite partie centrale dudit godet.
On voit sur la figure 1 que dans la partie avant dudit godet on a prévu une glissière 54 comportant lesdites parties 54a et 54b qui ont un profil en forme de queue d'aronde et que dans la partie supérieure arrière dudit godet on a prévu une deuxième glissière dont les parties mâles 54a et femelles 54b sont sensiblement en forme de T.In FIG. 1, it can be seen that a bucket of adjustable width according to the invention comprises a central part which comprises an inner sheet 7 and an outer sheet 8 which are curved which form the curved bottom of said bucket; said bucket has two lateral parts which each have an inner lateral sheet 43 and an outer lateral sheet 44 which are joined by spacers 45 and 51; the spacers marked 45 in FIG. 1 can be constituted for example by irons of substantially trapezoidal cross section on which said sheets are welded, for example by point, in the front part and the spacers identified 51 can be constituted by sections of hollow tubes preferably square section; in an exemplary embodiment of a bucket of adjustable width according to the invention, said hollow tubes 51 have a thickness of approximately 25 millimeters and said inner 7 and outer 8 sheets of said central portion of said bucket and said inner side 43 and outer side 44 sheets of said side portion of said bucket are of a thickness substantially equal to 3 millimeters; each of said lateral parts of said bucket comprises a lateral flange 3; we see that slides 54 are provided which may for example comprise a male part 54a rigidly connected to said lateral part of said bucket and a female part 54b rigidly connected to said central part of said bucket.
It can be seen in FIG. 1 that in the front part of said bucket there is provided a slide 54 comprising said parts 54a and 54b which have a profile in the shape of a dovetail and that in the rear upper part of said bucket there is provided a second slide whose male 54a and female 54b parts are substantially T-shaped.

Dans ce mode particulier de réalisation, lesdites tôles intérieures latérales 43 et extérieures latérales 44 sont jointes sur leurs bords avant par un cordon de soudure et sont fixées également par soudure sur ladite partie mâle 54a de ladite glissière située sur la partie supérieure arrière dudit godet (en haut sur la figure). On voit également que ladite tôle intérieure 7 et ladite tôle extérieure 8 de ladite partie centrale dudit godet sont reliées sur leurs bords avant par un fer plat 57 auquel elles sont soudées, lequel fer plat 57 peut être avantageusement réalisé dans un acier à haute résistance qui est peu susceptible de s'user; on voit que lesdites tôles 7 et 8 sont soudées à leur autre extrémité sur leur bord supérieur arrière à ladite partie femelle 54b en forme de T de ladite deuxième glissière dudit godet; on voit sur cette figure, que ladite tôle latérale intérieure 43, ladite tôle extérieure latérale 44 et lesdites glissières et entretoises et lesdits tronçons de tubes creux délimitent des espaces 58; ainsi, on peut avantageusement disposer à l'intérieur d'un de ces espaces 58 tout ou partie de la tige 49 ou du corps d'un vérin à double effet qui permettra d'actionner le déplacement de ladite partie latérale dudit godet par rapport à ladite partie centrale, par coulissement de ladite partie latérale dans l'espace situé entre lesdites tôles intérieures 7 et extérieures 8 de ladite partie centrale dudit godet; on voit qu'avantageusement, lesdites tôles 7, 43 ,44 et 8 sont cintrées de façon à laisser un jeu très faible entre lesdites tôles intérieures 7 et 43 d'une part et lesdites tôles extérieures 44 et 8 d'autre part.In this particular embodiment, said lateral lateral 43 and lateral lateral 44 sheets are joined on their front edges by a weld bead and are also fixed by welding on said male part 54a of said slide located on the upper rear part of said bucket ( above in the figure). It can also be seen that said inner sheet 7 and said outer sheet 8 of said central part of said bucket are connected on their front edges by a flat iron 57 to which they are welded, which flat iron 57 can advantageously be made of high-strength steel which is unlikely to wear out; it can be seen that said sheets 7 and 8 are welded at their other end on their rear upper edge to said female T-shaped portion 54b of said second slide of said bucket; it can be seen in this figure, that said internal lateral sheet 43, said lateral external sheet 44 and said slides and spacers and said sections of hollow tubes delimit spaces 58; thus, it is advantageously possible to have inside one of these spaces 58 all or part of the rod 49 or of the body of a double-acting cylinder which will make it possible to actuate the movement of said lateral part of said bucket relative to said central part, by sliding of said lateral part in the space situated between said inner 7 and outer 8 sheets of said central part of said bucket; we see that advantageously, said sheets 7, 43, 44 and 8 are bent so as to leave a clearance very weak between said inner sheets 7 and 43 on the one hand and said outer sheets 44 and 8 on the other.

Dans un mode particulier de réalisation, des renforts de protection 56 sont prévus sur la face externe arrière dudit godet qui peuvent être par exemple soudés sur ladite tôle extérieure de ladite partie centrale dudit godet de façon à protéger ledit godet contre les chocs.In a particular embodiment, protective reinforcements 56 are provided on the rear external face of said bucket which can for example be welded to said outer sheet of said central part of said bucket so as to protect said bucket against shocks.

Sur la figure 2 qui est une demi-vue en plan d'un godet de largeur réglable selon l'invention, on voit que ledit godet peut être articulé autour d'un axe YY2 à l'extrémité d'un bras 5 par exemple d'un bras de pelle mécanique; ledit godet de largeur réglable comporte des moyens de liaison 6 entre la partie centrale 40 dudit godet et ledit bras dudit engin de terrassement; on voit que ledit godet comporte une partie centrale 40 qui est muni sur son bord avant d'au moins une dent 1 et qui est muni sur son bord supérieur arrière d'une partie femelle 54b d'une glissière; ladite partie centrale 40 est avantageusement symétrique par rapport à son axe longitudinal XX1 contenu dans un plan longitudinal médian P1, et est relié par lesdites glissières et des moyens de coulissement qui comportent notamment un vérin 47, auxdites parties latérales 41 qui sont avantageusement symétriques par rapport audit plan longitudinal médian; on voit que ledit fond incurvé 2 de ladite partie centrale qui est constitué par ladite tôle intérieure et ladite tôle extérieure comporte une poutre centrale 46 qui s'étend entre lesdites tôles intérieure et extérieure dudit fond incurvé 2, dans ledit plan longitudinal médian P1 et qui assure à ladite partie centrale dudit godet une bonne rigidité; ladite poutre centrale sert également d'appui au corps 48 dudit vérin dont la tige 49 est reliée à ladite partie latérale 41 dudit godet de façon à permettre le déplacement de ladite partie latérale 41 dudit godet selon un mouvement de translation selon un axe transversal YY1 par rapport à ladite partie centrale 40 dudit godet.In FIG. 2 which is a half plan view of a bucket of adjustable width according to the invention, it can be seen that said bucket can be articulated around an axis YY 2 at the end of an arm 5 for example a mechanical shovel arm; said bucket of adjustable width comprises connecting means 6 between the central part 40 of said bucket and said arm of said earthmoving machine; we see that said bucket has a central portion 40 which is provided on its front edge with at least one tooth 1 and which is provided on its rear upper edge with a female part 54b of a slide; said central part 40 is advantageously symmetrical with respect to its longitudinal axis XX 1 contained in a median longitudinal plane P 1 , and is connected by said slides and sliding means which in particular comprise a jack 47, to said lateral parts 41 which are advantageously symmetrical with respect to said median longitudinal plane; we see that said curved bottom 2 of said central part which is constituted by said inner sheet and said outer sheet has a central beam 46 which extends between said inner and outer sheets of said curved bottom 2, in said median longitudinal plane P 1 and which provides said central portion of said bucket with good rigidity; said central beam also serves as a support for the body 48 of said jack, the rod 49 of which is connected to said lateral part 41 of said bucket so as to allow the displacement of said lateral part 41 of said bucket in a translational movement along a transverse axis YY 1 relative to said central portion 40 of said bucket.

On voit qu'avantageusement, ladite partie latérale 41 comporte des entretoises 45, une dent 1 et comporte à son extrémité supérieure arrière une partie 54a mâle de glissière qui peut coopérer avec ladite partie femelle 54b de la même glissière fixée rigidement à ladite partie centrale dudit godet, de manière à guider ladite partie latérale dans ses déplacements de coulissement par rapport à ladite partie centrale; on voit que ladite partie latérale 41 est délimitée sur son bord extérieur par un flasque latéral 3.It can be seen that, advantageously, said lateral part 41 comprises spacers 45, a tooth 1 and comprises at its rear upper end a male part 54a of slide which can cooperate with said female part 54b of the same slide rigidly fixed to said central part of said bucket, so as to guide said lateral part in its sliding movements relative to said central part; it can be seen that said lateral part 41 is delimited on its outer edge by a lateral flange 3.

Sur la figure 3 qui est une vue selon III-III de la figure 2, on voit que ledit godet comporte ladite partie centrale 40 qui s'étend symétriquement de part et d'autre dudit plan longitudinal médian P1 et comporte deux parties latérales 41 qui s'étendent symétriquement par rapport audit plan longitudinal médian P1 et qui peuvent coulisser entre ladite tôle intérieure 7 et ladite tôle extérieure 8 de ladite partie centrale grâce à un espace 19 situé entre lesdites tôles dont l'épaisseur est sensiblement égal à l'épaisseur du fond desdites parties latérales 41; on voit que selon l'invention, lesdites tôles intérieures 7 et extérieures 8 de ladite partie centrale sont reliées rigidement entre elles par ladite poutre centrale 46 qui s'étend selon ledit plan P1; on voit également que de part et d'autre dudit plan longitudinal médian P1, sont prévues sur leurs bords supérieurs arrières de ladite partie centrale 40 dudit godet, des parties femelles 54b de glissière qui peuvent coopérer avec des parties mâles 54a de glissière qui sont fixées sur ledit fond desdites parties latérales dudit godet; lesdites parties latérales sont délimitées à leurs extrémités latérales par un flasque latéral 3 et peuvent coulisser dans ledit espace 19 selon un axe transversal YY1.In FIG. 3 which is a view along III-III of FIG. 2, it can be seen that said bucket comprises said central part 40 which extends symmetrically on either side of said median longitudinal plane P1 and comprises two lateral parts 41 which extend symmetrically with respect to said median longitudinal plane P 1 and which can slide between said inner sheet 7 and said outer sheet 8 of said central part thanks to a space 19 located between said sheets whose thickness is substantially equal to the thickness from the bottom of said side portions 41; it can be seen that according to the invention, said inner 7 and outer 8 sheets of said central part are rigidly connected together by said central beam 46 which extends along said plane P 1 ; we also see that on both sides of said median longitudinal plane P 1 , are provided on their rear upper edges of said central part 40 of said bucket, female parts 54b of slide which can cooperate with male parts 54a of slide attached to said bottom of said side portions of said bucket; said lateral parts are delimited at their lateral ends by a lateral flange 3 and can slide in said space 19 along a transverse axis YY 1 .

Avantageusement, la largeur L1 desdites parties latèrales dudit godet est sensiblement égal à la 1/2 largeur L2 de ladite partie centrale, et la course C de coulissement desdites parties latérales par rapport à ladite partie centrale est sensiblement égale à la moitié de ladite largeur L1 soit sensiblement égale à la moitié de la 1/2 largeur L2.Advantageously, the width L 1 of said lateral parts of said bucket is substantially equal to the 1/2 width L 2 of said central part, and the sliding travel C of said lateral parts relative to said central part is substantially equal to half of said width L 1 is substantially equal to half the 1/2 width L 2 .

Sur cette figure, lesdites parties latérales 41 sont représentées dans la position où elles sont saillantes au maximum par rapport à ladite partie centrale; il est évident que lesdites parties mâles et femelles desdites glissières pourraient être interverties et situées respectivement sur ladite partie centrale et lesdites parties latérales dudit godet.In this figure, said lateral parts 41 are shown in the position where they are projecting at most with respect to said central part; it is obvious that said male and female parts of said slides could be inverted and located respectively on said central part and said lateral parts of said bucket.

On voit sur la figure 4 qui est une vue à échelle agrandie du détail A de la figure 3, que les bords desdites tôles de fond 7 et 8 de ladite partie centrale dudit godet qui sont parallèles audit axe longitudinal dudit godet comportent un plan incliné 28 qui relie les surfaces intérieures 29 et extérieures 31 desdites tôles de fond 7 et 8 et dont l'intersection avec lesdites surfaces intérieures forment une arête 30 saillante.We see in Figure 4 which is an enlarged view of detail A of Figure 3, the edges of said bottom sheets 7 and 8 of said central portion of said bucket which are parallel to said longitudinal axis of said bucket have an inclined plane 28 which connects them inner 29 and outer 31 surfaces of said bottom sheets 7 and 8 and the intersection of said inner surfaces form a projecting edge 30.

Les surfaces 27 et 29 desdites tôle intérieure 43 de ladite partie latérale et tôle intérieure 7 de ladite partie centrale d'une part, de ladite tôle extérieure latérale 44 et de ladite tôle extérieure 8 de ladite partie centrale d'autre part, sont parfaitement lisses et parallèles et la distance entre lesdites surfaces 27 et 29 est très faible de sorte que lesdites tôles 7, 43 d'une part et 8, 44 d'autre constituent des moyens de guidage de ladite partie latérale par rapport à ladite partie centrale dans le mouvement de coulissement selon ledit axe transversal dudit godet, et lesdites arêtes 30 constituent des racleurs qui évitent l'introduction dans ledit espace 19 de corps étrangers tels que terre, cailloux etc.The surfaces 27 and 29 of said inner sheet 43 of said lateral part and inner sheet 7 of said central part on the one hand, of said lateral outer sheet 44 and of said outer sheet 8 of said central part on the other hand, are perfectly smooth and parallel and the distance between said surfaces 27 and 29 is very small so that said sheets 7, 43 on the one hand and 8, 44 on the other constitute means for guiding said lateral part with respect to said central part in the sliding movement along said transverse axis of said bucket, and said edges 30 constitute scrapers which prevent the introduction into said space 19 of foreign bodies such as earth, stones etc.

Sur la figure 5 qui représente en perspective partielle un mode de réalisation d'un godet de largeur réglable selon l'invention, on voit que ledit godet comporte ladite partie centrale 40 et deux parties latérales 41 qui sont symétriques par rapport au plan longitudinal médian P1 dudit godet; sur cette figure, ladite partie latérale 41 située à gauche est illustrée dans une position d'ouverture maximale alors que ladite partie latérale 41 située à droite sur la figure est montrée dans une position où elle est complètement rentrée à l'intérieur dudit espace situé à l'intérieur de ladite partie centrale.In FIG. 5 which shows in partial perspective an embodiment of a bucket of adjustable width according to the invention, it can be seen that said bucket comprises said central part 40 and two lateral parts 41 which are symmetrical with respect to the median longitudinal plane P 1 of said bucket; in this figure, said lateral part 41 situated on the left is illustrated in a maximum open position while said lateral part 41 situated on the right in the figure is shown in a position where it is completely retracted inside said space situated at the interior of said central part.

On voit qu'à gauche sur la figure, ladite partie latérale 41 comporte un flasque latéral 3 et un fond latéral 42 qui peut coulisser entre lesdites tôles intérieures 7 et extérieures 8 dudit fond incurvé de ladite partie centrale dudit godet.We see that on the left in the figure, said lateral part 41 has a lateral flange 3 and a lateral bottom 42 which can slide between said inner 7 and outer 8 sheets of said curved bottom of said central part of said bucket.

On voit que ladite poutre centrale 46 est incurvée et suit la courbure desdites tôles 7 et 8 qu'elle relie de façon rigide, en s'étendant dans ledit plan longitudinal médian P1; on voit que ladite poutre centrale 46 sert d'appui grâce à des moyens de fixation 50 situés sur ces faces latérales au corps 48 d'un vérin muni d'une tige 49, laquelle tige est fixée sur ladite partie latérale 41 située à droite sur la figure et lequel vérin permet le coulissement de ladite partie latérale dans ladite partie centrale.It can be seen that said central beam 46 is curved and follows the curvature of said sheets 7 and 8 which it connects rigidly, extending in said median longitudinal plane P 1 ; it can be seen that said central beam 46 serves as a support by means of fixing means 50 situated on these lateral faces to the body 48 of a jack provided with a rod 49, which rod is fixed on said lateral part 41 situated on the right on the figure and which cylinder allows the sliding of said lateral part in said central part.

On voit qu'avantageusement selon l'invention, une trappe de visite 53 peut être prévue par exemple dans ladite tôle intérieure 7 de ladite partie centrale afin de permettre un accès aisé audit moyen de fixation 50 dudit vérin sur ladite poutre centrale et à des moyens de blocage desdits moyens de fixation éventuels afin de permettre le montage et le démontage rapide dudit vérin en cas de remplacement de celui-ci.It can be seen that advantageously according to the invention, a hatch for inspection 53 can be provided for example in said inner sheet 7 of said central part in order to allow easy access to said fixing means 50 of said jack on said central beam and to blocking means of said possible fixing means in order to allow mounting and rapid disassembly of said cylinder in case of replacement thereof.

On voit que dans ce mode de réalisation, ladite tôle intérieure 7 de ladite partie centrale est munie de deux orifices de nettoyage 55 situés de part et d'autre de ladite poutre centrale, lesquels orifices 55 permettent d'injecter un produit de nettoyage à l'intérieur de l'espace délimité par les tôles 7 et 8 de façon à évacuer les corps étrangers qui auraient pu s'introduire à l'intérieur dudit espace 19 et qui pourraient gêner le fonctionnement dudit godet et le coulissement desdites parties latérales par rapport à ladite partie centrale.It can be seen that in this embodiment, said inner sheet 7 of said central part is provided with two cleaning orifices 55 located on either side of said central beam, which orifices 55 make it possible to inject a cleaning product into the inside the space delimited by the sheets 7 and 8 so as to evacuate foreign bodies which could have entered inside said space 19 and which could hinder the operation of said bucket and the sliding of said lateral parts relative to said central part.

On voit que sur le bord avant de ladite partie centrale sont prévues des dents 1 qui sont des dents amovibles qui sont fixées sur un support de dents 1a fixé rigidement sur le bord avant de ladite partie centrale, lequel support 1a est en forme de chape et est muni d'un alésage dans lequel on peut glisser une goupille qui permettra d'immobiliser ladite dent amovible; de la sorte, lorsque lesdites dents sont usées ou abîmées elles pourront être facilement remplacées. On voit qu'avantageusement, lesdites goupilles sont situées selon un axe horizontal et plus précisément selon un axe transversal parallèle audit axe YY1 transversal dudit godet.We see that on the front edge of said central part are provided teeth 1 which are removable teeth which are fixed on a tooth support 1a rigidly fixed on the front edge of said central part, which support 1a is in the form of a yoke and is provided with a bore in which a pin can be slid which will immobilize said removable tooth; in this way, when said teeth are worn or damaged they can be easily replaced. It can be seen that advantageously, said pins are located along a horizontal axis and more precisely along a transverse axis parallel to said transverse axis YY 1 of said bucket.

Claims (10)

Godet de terrassement de largeur réglable comportant une partie centrale (40), d'axe longitudinal (XX₁), qui peut être fixée à un bras (5) d'un engin de terrassement et qui peut être articulé à l'extrémité dudit bras autour d'un axe de rotation (YY2) perpendiculaire audit axe longitudinal, laquelle partie centrale comporte un fond incurvé (2) comportant une tôle intérieure (7) et une tôle extérieure (8), caractérisé en ce que ledit godet comporte 2 parties latérales (41) sensiblement symétriques par rapport à un plan longitudinal médian (P1)dudit godet, et en ce que chacune desdites parties latérales comporte un fond latéral incurvé (42) qui comporte une tôle latérale intérieure (43) et une tôle latérale extérieure (44), lesquelles tôles latérales intérieures et extérieures sont réunies par des entretoises (45).Earthmoving bucket of adjustable width comprising a central part (40), of longitudinal axis (XX₁), which can be fixed to an arm (5) of an earthmoving machine and which can be articulated at the end of said arm around an axis of rotation (YY2) perpendicular to said longitudinal axis, which central part comprises a curved bottom (2) comprising an internal sheet (7) and an external sheet (8), characterized in that said bucket has 2 lateral parts ( 41) substantially symmetrical with respect to a median longitudinal plane (P1) of said bucket, and in that each of said lateral parts comprises a curved lateral bottom (42) which comprises an internal lateral sheet (43) and an external lateral sheet (44) , which inner and outer side plates are joined by spacers (45). Godet selon la revendication 1 caractérisé en ce qu'il comporte une poutre centrale (46) qui s'étend entre lesdites tôles intérieures et extérieures dudit fond incurvé (2) et dont l'axe longitudinal s'étend dans ledit plan longitudinal médian dudit godet, laquelle poutre centrale relie rigidement lesdites tôles intérieures et tôles extérieures de ladite partie centrale, lesquelles tôles intérieures et extérieures de ladite partie centrale délimitent un espace (19) en forme de lame dont les faces sont parallèles et dont l'épaisseur est peu supérieure à l'épaisseur dudit fond latéral incurvé desdites parties latérales.Bucket according to claim 1 characterized in that it comprises a central beam (46) which extends between said inner and outer sheets of said curved bottom (2) and whose longitudinal axis extends in said median longitudinal plane of said bucket , which central beam rigidly connects said internal sheets and external sheets of said central part, which internal and external sheets of said central part delimit a space (19) in the form of a blade whose faces are parallel and whose thickness is little more than the thickness of said curved lateral bottom of said lateral parts. Godet selon la revendication 2 caractérisé en ce qu'il comporte en outre deux vérins à double effet (47) identiques comportant chacun un corps (48) et une tige (49), lesquels vérins s'étendent selon un axe transversal (YY1) dudit godet, et en ce que une première extrémité de chacun desdits vérins est fixée par des moyens (50) de fixation amovible sur ladite poutre centrale.Bucket according to claim 2 characterized in that it further comprises two identical double-acting cylinders (47) each comprising a body (48) and a rod (49), which cylinders extend along a transverse axis (YY1) of said bucket, and in that a first end of each of said jacks is fixed by means (50) of removable fixing on said central beam. Godet selon la revendication 3 caractérisé en ce que lesdits moyens (50) de fixation amovibles sont constitués par un dispositif d'assemblage fileté, comportant une partie mâle et une partie femelle munies de filets ou de portion de filet respectivement mâle et femelle, à grands pas.Bucket according to claim 3 characterized in that said removable fixing means (50) are constituted by a threaded assembly device, comprising a male part and a female part provided with threads or with male and female portion of net respectively, with large not. Godet selon l'une quelconque des revendications 1 à 4 caractérisé en ce que lesdites entretoises sont constituées en partie au moins par des tronçons (51)de tubes creux qui s'étendent parallèlement audit axe transversal dudit godet, et en ce qu'il comporte en outre quatre glissières (54) à jeu réduit et de forte section qui s'étendent parallèlement audit axe transversal dudit godet et disposées symétriquement par rapport audit plan longitudinal médian (P1), et de préférence deux des glissières sont situées sur l'extrémité arrière supérieure dudit godet et lesdites glissières comportent chacune un dispositif de fin de course.Bucket according to any one of claims 1 to 4 characterized in that said spacers are formed in part at least by sections (51) of hollow tubes which extend parallel to said transverse axis of said bucket, and in that it further comprises four slides (54) with reduced clearance and of large section which extend parallel to said axis transverse of said bucket and arranged symmetrically with respect to said median longitudinal plane (P1), and preferably two of the slides are located on the upper rear end of said bucket and said slides each include a limit switch device. Godet selon l'une quelconque des revendications 3 à 5 caractérisé en ce que ladite partie centrale comporte des moyens (52) de blocage desdits moyens de fixation amovibles et comporte au moins une trappe (53) de visite qui permet un accès aisé auxdits moyens de fixation amovibles et auxdits moyens de blocage (52).Bucket according to any one of claims 3 to 5 characterized in that said central part comprises means (52) for blocking said removable fixing means and comprises at least one inspection hatch (53) which allows easy access to said means of removable fixing and to said locking means (52). Godet selon l'une quelconque des revendications 1 à 6 caractérisé en ce que l'une au moins desdites tôles intérieures et extérieures de ladite partie centrale comporte au moins un orifice (55) de nettoyage qui permet l'injection d'un produit de nettoyage dans l'espace (19) délimité par lesdites tôles intérieures et extérieures dudit fond de ladite partie centrale, et en ce que lesdites tôles intérieures (7) et extérieures (8) dudit fond de ladite partie centrale et lesdites tôles intérieures latérales (43) et extérieures latérales (44) sont des tôles minces, de préférence des tôles d'épaisseur inférieure ou égale à 6 millimètres.Bucket according to any one of claims 1 to 6 characterized in that at least one of said internal and external sheets of said central part comprises at least one cleaning orifice (55) which allows the injection of a cleaning product in the space (19) delimited by said inner and outer sheets of said bottom of said central part, and in that said inner (7) and outer sheets (8) of said bottom of said central part and said inner side sheets (43) and lateral outer (44) are thin sheets, preferably sheets of thickness less than or equal to 6 millimeters. Godet selon l'une quelconque des revendications 1 à 7 caractérisé en ce que ladite partie centrale comporte sur la face externe de ladite tôle extérieure (8) des renforts (56) de protection contre les chocs qui s'étendent parallèlement audit plan longitudinal médian et qui épousent la courbe de ladite tôle extérieure.Bucket according to any one of claims 1 to 7 characterized in that said central part comprises on the external face of said outer sheet (8) reinforcements (56) for protection against impacts which extend parallel to said median longitudinal plane and which follow the curve of said outer sheet. Godet selon l'une quelconque des revendications 1 à 8 caractérisé en ce qu'il comporte des dents (1) amovibles et des supports (1a) de dents en forme de chape liée rigidement audit godet et en ce que lesdites dents s'emboîtent par leurs extrémités arrières dans ledit support de dents, et en ce que lesdites dents sont immobilisées par des goupilles (1b) qui s'étendent parallèlement audit axe transversal (YY1) dudit godet.Bucket according to any one of claims 1 to 8 characterized in that it comprises removable teeth (1) and supports (1a) of teeth in the form of a yoke rigidly connected to said bucket and in that said teeth fit together their rear ends in said tooth support, and in that said teeth are immobilized by pins (1b) which extend parallel to said transverse axis (YY1) of said bucket. Godet selon l'une quelconque des revendications 1 à 9 caractérisé en ce que les bords parallèles à l'axe longitudinal (XX1) desdites tôles (7) et (8) dudit fond de ladite partie centrale comporte un plan incliné (28) qui relie les surfaces intérieures (29) et extérieures (31) desdites tôles (7) et (8) et dont l'intersection avec lesdites surfaces intérieures forme une arête (30) saillante, et en ce que lesdites surfaces (27) et (29) desdites tôles desdites parties latérales et de ladite partie centrale sont parfaitement lisses et parallèles et en ce que la distance entre lesdites surfaces (27) et (29) est très faible de sorte que lesdites tôles intérieures et extérieures (7) et (8) de ladite partie centrale et lesdites tôles latérales intérieures et latérales extérieures (43) et (44) desdites parties latérales constituent en elles-mêmes des moyens de guidage, et lesdites arêtes constituent des racleurs qui interdisent aux corps étrangers de pénétrer dans ladite cavité (19).Bucket according to any one of Claims 1 to 9, characterized in that the edges parallel to the longitudinal axis (XX1) of said sheets (7) and (8) of said bottom of said central part comprises an inclined plane (28) which connects the interior (29) and exterior (31) surfaces of said sheets (7) and (8) and whose intersection with said interior surfaces form a projecting edge (30), and in that said surfaces (27) and (29) of said sheets of said side parts and of said central part are perfectly smooth and parallel and in that the distance between said surfaces (27 ) and (29) is very small so that said interior and exterior sheets (7) and (8) of said central portion and said interior and exterior side sheets (43) and (44) of said side portions constitute in themselves guide means, and said edges constitute scrapers which prevent foreign bodies from entering said cavity (19).
EP90430026A 1989-12-29 1990-12-28 Bucket provided with adjustable width for earth moving machines Ceased EP0435796A1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR8917558A FR2656640B1 (en) 1989-12-29 1989-12-29 BUCKET FOR EARTHMOVING MACHINES OF ADJUSTABLE WIDTH.
FR8917558 1989-12-29

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Cited By (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1996030598A1 (en) * 1995-03-30 1996-10-03 Thomas Ruff Bucket for a mechanical excavator
US5692875A (en) * 1996-03-20 1997-12-02 Boman; Daniel J. Chute assembly for a bucket or scoop
GB2341843A (en) * 1998-09-24 2000-03-29 John Edward Mansfield Variable width excavation bucket
WO2004076752A1 (en) * 2003-02-25 2004-09-10 Gianluca Malacrino Bucket or scoop with adjustable capacity
EP1760202A3 (en) * 2005-09-06 2014-01-22 McFarland, David L. Expandable bucket
WO2018141021A1 (en) * 2017-02-02 2018-08-09 Excavator Innovations Pty Ltd A bucket for earthmoving machines
CN110158693A (en) * 2019-05-23 2019-08-23 江苏徐工工程机械研究院有限公司 A kind of milling tooth assembly and Double-wheel milling milling wheel
EP3553232A3 (en) * 2018-04-11 2019-11-27 Deere & Company Hybrid load bucket assembly
CN110525938A (en) * 2019-07-31 2019-12-03 重庆机电职业技术学院 Convey the automatic reversing apparatus of valve stem
CN114277867A (en) * 2021-12-28 2022-04-05 扬州市育英钣金机械有限公司 Telescopic adjustable bucket capable of adjusting shovel body space and adjusting method

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN112252388B (en) * 2020-10-27 2023-05-09 山东华星重工机械装备有限公司 Space-changeable excavator bucket and use method

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4208814A (en) * 1978-08-11 1980-06-24 Richard Stone Backhoe bucket extension device
US4691455A (en) * 1985-09-20 1987-09-08 Newman Russell L Trenching equipment with hinged side plates
DE8804501U1 (en) * 1988-04-06 1988-06-23 Mäckl, Johann, 8416 Hemau Excavator bucket

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4208814A (en) * 1978-08-11 1980-06-24 Richard Stone Backhoe bucket extension device
US4691455A (en) * 1985-09-20 1987-09-08 Newman Russell L Trenching equipment with hinged side plates
DE8804501U1 (en) * 1988-04-06 1988-06-23 Mäckl, Johann, 8416 Hemau Excavator bucket

Cited By (16)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1996030598A1 (en) * 1995-03-30 1996-10-03 Thomas Ruff Bucket for a mechanical excavator
DE19511617A1 (en) * 1995-03-30 1996-10-10 Thomas Ruff Backhoe bucket for a backhoe
DE19511617C2 (en) * 1995-03-30 1998-12-10 Thomas Ruff Backhoe bucket for a backhoe
US5692875A (en) * 1996-03-20 1997-12-02 Boman; Daniel J. Chute assembly for a bucket or scoop
GB2341843A (en) * 1998-09-24 2000-03-29 John Edward Mansfield Variable width excavation bucket
WO2004076752A1 (en) * 2003-02-25 2004-09-10 Gianluca Malacrino Bucket or scoop with adjustable capacity
JP2006518819A (en) * 2003-02-25 2006-08-17 ジャンルカ マラクリーノ， Adjustable volume bucket for backhoe or loader
US7647713B2 (en) 2003-02-25 2010-01-19 Gianluca Malacrino Bucket or scoop with adjustable capacity
EP1760202A3 (en) * 2005-09-06 2014-01-22 McFarland, David L. Expandable bucket
WO2018141021A1 (en) * 2017-02-02 2018-08-09 Excavator Innovations Pty Ltd A bucket for earthmoving machines
EP3553232A3 (en) * 2018-04-11 2019-11-27 Deere & Company Hybrid load bucket assembly
US11078644B2 (en) 2018-04-11 2021-08-03 Deere & Company Hybrid load bucket assembly
CN110158693A (en) * 2019-05-23 2019-08-23 江苏徐工工程机械研究院有限公司 A kind of milling tooth assembly and Double-wheel milling milling wheel
CN110158693B (en) * 2019-05-23 2024-03-01 江苏徐工工程机械研究院有限公司 Milling cutter tooth assembly and double-wheel milling wheel
CN110525938A (en) * 2019-07-31 2019-12-03 重庆机电职业技术学院 Convey the automatic reversing apparatus of valve stem
CN114277867A (en) * 2021-12-28 2022-04-05 扬州市育英钣金机械有限公司 Telescopic adjustable bucket capable of adjusting shovel body space and adjusting method

Also Published As

Publication number Publication date
FR2656640A1 (en) 1991-07-05
FR2656640B1 (en) 1992-07-17

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