EP0509898A1 - System with a hydraulic motor having a brake and application to a vibratory compactor - Google Patents
System with a hydraulic motor having a brake and application to a vibratory compactor Download PDFInfo
- Publication number
- EP0509898A1 EP0509898A1 EP92401035A EP92401035A EP0509898A1 EP 0509898 A1 EP0509898 A1 EP 0509898A1 EP 92401035 A EP92401035 A EP 92401035A EP 92401035 A EP92401035 A EP 92401035A EP 0509898 A1 EP0509898 A1 EP 0509898A1
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- European Patent Office
- Prior art keywords
- brake
- motor
- compactor
- main hydraulic
- peripheral
- Prior art date
- 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.)
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Classifications
-
- E—FIXED CONSTRUCTIONS
- E01—CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
- E01C—CONSTRUCTION OF, OR SURFACES FOR, ROADS, SPORTS GROUNDS, OR THE LIKE; MACHINES OR AUXILIARY TOOLS FOR CONSTRUCTION OR REPAIR
- E01C19/00—Machines, tools or auxiliary devices for preparing or distributing paving materials, for working the placed materials, or for forming, consolidating, or finishing the paving
- E01C19/22—Machines, tools or auxiliary devices for preparing or distributing paving materials, for working the placed materials, or for forming, consolidating, or finishing the paving for consolidating or finishing laid-down unset materials
- E01C19/23—Rollers therefor; Such rollers usable also for compacting soil
- E01C19/28—Vibrated rollers or rollers subjected to impacts, e.g. hammering blows
- E01C19/286—Vibration or impact-imparting means; Arrangement, mounting or adjustment thereof; Construction or mounting of the rolling elements, transmission or drive thereto, e.g. to vibrator mounted inside the roll
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- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
- E02D3/00—Improving or preserving soil or rock, e.g. preserving permafrost soil
- E02D3/02—Improving by compacting
- E02D3/026—Improving by compacting by rolling with rollers usable only for or specially adapted for soil compaction, e.g. sheepsfoot rollers
Definitions
- the invention has its origin in the search for a solution to the problem of driving the compacting rollers of a compactor.
- the compactor comprises a single compacting roller, which is rotatably mounted relative to the frame of the compactor with the interposition of flexible vibration isolation elements.
- a hydraulic motor generally at low speed and with high torque, is coupled to the compaction roller and ensures its drive, being placed at one end of, and coaxial with said compaction roller.
- an eccentric mass is placed inside, hollow, of the compaction roller, and is driven in rotation by means of another motor, generally constituted by a high speed hydraulic motor and little couple.
- This other motor is placed at the other end of the compaction roller, coaxial with it, and drives the eccentric mass via a shaft.
- certain compactors comprise two coaxial compacting rollers, in the extension of one another, and coupled to two separate hydraulic motors.
- the rollers can have different rotations, which avoids the destruction of compacted soils.
- the drive motor for the eccentric mass is already placed, it is not possible to directly couple the drive motor to the compaction roller corresponding to this compaction roller.
- the known solution consists in offsetting said drive motor of the compacting roller; placing it where there is room, that is to say next to the eccentric mass drive motor; and coupling the drive shaft of the drive motor of the compacting roller to said compacting roller by means of a ring gear and pinions of gears. The whole is complex, bulky, heavy and expensive.
- the object of the invention is to remedy these drawbacks by proposing a solution where the two motors located on the same side of one of the compacting rollers are arranged coaxially with one another and with this compacting roller. To do this, a new hydraulic motor had to be studied before it could be applied to compactors, a hydraulic motor fitted with a brake.
- the invention therefore firstly relates to a set of a hydraulic motor and a brake which is coupled thereto, comprising: a central motor element through which a first axial recess passes; a peripheral motor element mounted for rotation relative to said central motor element about an axis; and a brake shaft, which is integral, with respect to said relative rotation, of said central motor element and which extends axially concomitantly opposite the central motor element and opposite the brake.
- the brake comprises a casing, at least part of which is integral with the peripheral element of the engine, and which itself comprises a bottom arranged transversely to the axis; b) the bottom has a through bore; c) the brake shaft passes completely through the assembly of the motor and the brake, in particular said bore at the bottom of the brake housing; d) two seals are interposed between the brake shaft and, on the one hand, the first recess of the central element of the engine, on the other hand, said bore in the bottom of the brake housing, respectively; e) the brake shaft has a second recess passing entirely through it.
- the invention also relates to a compactor which comprises at least one assembly according to one of the preceding definitions.
- this compactor comprises at least one set of a hydraulic motor and a brake in accordance with the preceding definitions and further comprises: two separate compacting rollers, cylindrical, mounted for rotation about a common geometric axis; two main hydraulic motors for driving said rollers coupled between the frame of the compactor and, one of the main hydraulic motors, one of said compacting rollers, the other main hydraulic motor, the other compacting roller, a first of said main hydraulic motors forming part of an assembly according to one of the preceding definitions; an eccentric mass relative to said geometric axis; and a third motor for driving said eccentric mass, coupled between the frame of the compactor and said mass, and comprising two elements mounted for rotation relative to each other; however, on the one hand, a first of said elements of the third motor is made integral with respect to the rotation of the peripheral element of the first main hydraulic motor, on the other hand, the second of the two said elements of the third motor is made integral with respect to the rotation of a shaft which passes through the second recess formed in the brake shaft of the
- the main advantage of the invention lies in the fact that the axial recess in the brake shaft allows the passage of a drive shaft connecting the eccentric mass to its drive motor, while making it possible to place the hydraulic motor for driving the compacting roller coaxially with said compacting roller and thus directly drive this compacting roller.
- the brake shaft 37 passes entirely through the engine, in particular its cylinder block 8 and its internal fluid distributor 21, and, the brake, including the cover 42 of its casing (32-42).
- the axial recess 40 itself passing entirely through the brake shaft 37, it is possible to pass a connection, such as a motion transmission shaft, through the assembly of the motor and the brake, passing through the axial recess 40, as described in the application example shown in Figure 2.
- FIG. 2 schematically represents the two cylindrical compacting rollers 59, 60 of a compactor.
- the axial recess 40 which comprises the assembly of FIG. 1, allows the axial crossing of the motor and the brake by any element, such as the shaft 81 of FIG. 2, this element which may be other than a drive shaft and which may, for example, in certain different applications be constituted by pipes or measuring instruments.
- the seals 44, 45, 46 ensure satisfactory operation of the assembly, while the adapter flange 53, which allows the adaptation of any third motor 76 driving the shaft 81, also acts as a starting support for the elastic washer 57.
- assemblies in which the peripheral part 32 of the brake housing is in one piece with part 1B of the peripheral element of the motor housing, assemblies, of course provided with a removable cover 42 (removable fixing by the 'intermediate flange 53 and screws 54); and assemblies, in which the brake housing is in one piece (peripheral part 32 and cover 42 in one piece), fixed to part 1B of the motor housing by means of a removable fixing.
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- Engineering & Computer Science (AREA)
- Structural Engineering (AREA)
- Civil Engineering (AREA)
- Life Sciences & Earth Sciences (AREA)
- Environmental & Geological Engineering (AREA)
- Soil Sciences (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Mining & Mineral Resources (AREA)
- Paleontology (AREA)
- Agronomy & Crop Science (AREA)
- General Engineering & Computer Science (AREA)
- Architecture (AREA)
- Hydraulic Motors (AREA)
- Road Paving Machines (AREA)
Abstract
Description
L'invention a son origine dans la recherche d'une solution au problème de l'entraînement des rouleaux de compactage d'un compacteur.The invention has its origin in the search for a solution to the problem of driving the compacting rollers of a compactor.
Selon une première réalisation connue, le compacteur comporte un rouleau de compactage unique, qui est monté rotatif par rapport au bâti du compacteur avec interposition d'éléments souples d'isolation des vibrations. Un moteur hydraulique, généralement à vitesse de rotation faible et à couple important, est attelé au rouleau de compactage et en assure l'entraînement, en étant placé à une extrémité de, et coaxial audit rouleau de compactage.According to a first known embodiment, the compactor comprises a single compacting roller, which is rotatably mounted relative to the frame of the compactor with the interposition of flexible vibration isolation elements. A hydraulic motor, generally at low speed and with high torque, is coupled to the compaction roller and ensures its drive, being placed at one end of, and coaxial with said compaction roller.
Afin d'améliorer l'efficacité du compactage, une masse excentrée est placée à l'intérieur, creux, du rouleau de compactage, et est entraînée en rotation au moyen d'un autre moteur, constitué généralement par un moteur hydraulique à grande vitesse et petit couple. Cet autre moteur est placé à l'autre extrémité du rouleau de compactage, coaxialement à celui-ci, et entraîne la masse excentrée par l'intermédiaire d'un arbre.In order to improve the compaction efficiency, an eccentric mass is placed inside, hollow, of the compaction roller, and is driven in rotation by means of another motor, generally constituted by a high speed hydraulic motor and little couple. This other motor is placed at the other end of the compaction roller, coaxial with it, and drives the eccentric mass via a shaft.
Pour améliorer la manoeuvrabilité des compacteurs, notamment en virage, certains compacteurs comportent deux rouleaux de compactage coaxiaux, dans le prolongement l'un de l'autre, et attelés à deux moteurs hydrauliques distincts. Ainsi, les rouleaux peuvent avoir des rotations différentes, ce qui permet d'éviter la destruction des sols compactés. Du côté où est déjà placé le moteur d'entraînement de la masse excentrée, il n'est pas possible d'atteler directement le moteur d'entraînement du rouleau de compactage correspondant à ce rouleau de compactage. La solution connue consiste à excentrer ledit moteur d'entraînement du rouleau de compactage ; à le placer là où il y a de la place, c'est-à-dire à côté du moteur d'entraînement de la masse excentrée ; et à atteler l'arbre d'entraînement du moteur d'entraînement du rouleau de compactage audit rouleau de compactage par l'intermédiaire d'une couronne dentée et de pignons d'engrenages. L'ensemble est complexe, encombrant, lourd et onéreux.To improve the maneuverability of the compactors, in particular when cornering, certain compactors comprise two coaxial compacting rollers, in the extension of one another, and coupled to two separate hydraulic motors. Thus, the rollers can have different rotations, which avoids the destruction of compacted soils. On the side where the drive motor for the eccentric mass is already placed, it is not possible to directly couple the drive motor to the compaction roller corresponding to this compaction roller. The known solution consists in offsetting said drive motor of the compacting roller; placing it where there is room, that is to say next to the eccentric mass drive motor; and coupling the drive shaft of the drive motor of the compacting roller to said compacting roller by means of a ring gear and pinions of gears. The whole is complex, bulky, heavy and expensive.
Le but de l'invention est de remédier à ces inconvénients en proposant une solution où les deux moteurs situés d'un même côté d'un des rouleaux de compactage sont disposés coaxialement l'un à l'autre et à ce rouleau de compactage. Pour ce faire, il a fallu étudier un nouveau moteur hydraulique avant qu'il reçoive application aux compacteurs, moteur hydraulique muni d'un frein.The object of the invention is to remedy these drawbacks by proposing a solution where the two motors located on the same side of one of the compacting rollers are arranged coaxially with one another and with this compacting roller. To do this, a new hydraulic motor had to be studied before it could be applied to compactors, a hydraulic motor fitted with a brake.
L'invention a donc d'abord pour objet un ensemble d'un moteur hydraulique et d'un frein qui y est attelé, comprenant : un élément central de moteur traversé par un premier évidement axial ; un élément périphérique de moteur monté à rotation relative par rapport audit élément central de moteur autour d'un axe ; et un arbre de frein, qui est solidaire, vis-à-vis de ladite rotation relative, dudit élément central de moteur et qui s'étend axialement concomitamment en regard de l'élément central de moteur et en regard du frein.The invention therefore firstly relates to a set of a hydraulic motor and a brake which is coupled thereto, comprising: a central motor element through which a first axial recess passes; a peripheral motor element mounted for rotation relative to said central motor element about an axis; and a brake shaft, which is integral, with respect to said relative rotation, of said central motor element and which extends axially concomitantly opposite the central motor element and opposite the brake.
Selon l'invention : a) le frein comprend un carter, dont une partie au moins est solidaire de l'élément périphérique du moteur, et qui comporte elle-même un fond disposé transversalemnt par rapport à l'axe ; b) le fond comporte un alésage traversant ; c) l'arbre de frein traverse complètement l'ensemble du moteur et du frein, notamment ledit alésage du fond du carter de frein ; d) deux joints d'étanchéité sont interposés entre l'arbre de frein et, d'une part, le premier évidement de l'élément central du moteur, d'autre part, ledit alésage du fond du carter de frein, respectivement ; e) l'arbre de frein comporte un deuxième évidement le traversant entièrement.According to the invention: a) the brake comprises a casing, at least part of which is integral with the peripheral element of the engine, and which itself comprises a bottom arranged transversely to the axis; b) the bottom has a through bore; c) the brake shaft passes completely through the assembly of the motor and the brake, in particular said bore at the bottom of the brake housing; d) two seals are interposed between the brake shaft and, on the one hand, the first recess of the central element of the engine, on the other hand, said bore in the bottom of the brake housing, respectively; e) the brake shaft has a second recess passing entirely through it.
Les avantageuses dispositions suivantes sont en outre, de préférence, adoptées :
- le carter de frein comprend une partie périphérique, qui est solidaire de l'élément périphérique du moteur, et, un couvercle de fermeture, distinct de ladite partie périphérique et constituant ledit fond ;
- une bride d'adaptation est fixée sur la partie périphérique du carter de frein, cependant que ledit couvercle de carter de frein constitue en outre un organe de poussée d'organes de freinage que comporte le frein, un organe élastique de rappel étant interposé entre le couvercle de carter de frein et ladite bride d'adaptation.
- the brake housing comprises a peripheral part, which is integral with the peripheral element of the engine, and, a closing cover, separate from said peripheral part and constituting said bottom;
- an adapter flange is fixed on the peripheral part of the brake housing, while said brake housing cover further constitutes a member for thrusting braking that includes the brake, an elastic return member being interposed between the brake housing cover and said adapter flange.
L'invention a également pour objet un compacteur qui comporte au moins un ensemble selon l'une des définitions précédentes.The invention also relates to a compactor which comprises at least one assembly according to one of the preceding definitions.
Selon l'invention, ce compacteur comporte au moins un ensemble d'un moteur hydraulique et d'un frein conforme aux définitions précédentes et comprend en outre : deux rouleaux distincts de compactage, cylindriques, montés à rotation autour d'un axe géométrique commun ; deux moteurs hydrauliques principaux d'entraînement desdits rouleaux attelés entre le bâti du compacteur et, l'un des moteurs hydrauliques principaux, l'un desdits rouleaux de compactage, l'autre moteur hydraulique principal, l'autre rouleau de compactage, un premier desdits moteurs hydrauliques principaux faisant partie d'un ensemble selon l'une des définitions précédentes ; une masse excentrée par rapport audit axe géométrique ; et un troisième moteur d'entraînement de ladite masse excentrée, attelé entre le bâti du compacteur et ladite masse, et comportant deux éléments montés à rotation relative l'un par rapport à l'autre ; cependant que, d'une part, un premier desdits éléments du troisième moteur est rendu solidaire vis-à-vis de la rotation de l'élément périphérique du premier moteur hydraulique principal, d'autre part, le deuxième des deux dits éléments du troisième moteur est rendu solidaire vis-à-vis de la rotation d'un arbre qui traverse le deuxième évidement ménagé dans l'arbre de frein du frein appartenant audit ensemble dont fait partie ledit premier moteur hydraulique principal.According to the invention, this compactor comprises at least one set of a hydraulic motor and a brake in accordance with the preceding definitions and further comprises: two separate compacting rollers, cylindrical, mounted for rotation about a common geometric axis; two main hydraulic motors for driving said rollers coupled between the frame of the compactor and, one of the main hydraulic motors, one of said compacting rollers, the other main hydraulic motor, the other compacting roller, a first of said main hydraulic motors forming part of an assembly according to one of the preceding definitions; an eccentric mass relative to said geometric axis; and a third motor for driving said eccentric mass, coupled between the frame of the compactor and said mass, and comprising two elements mounted for rotation relative to each other; however, on the one hand, a first of said elements of the third motor is made integral with respect to the rotation of the peripheral element of the first main hydraulic motor, on the other hand, the second of the two said elements of the third motor is made integral with respect to the rotation of a shaft which passes through the second recess formed in the brake shaft of the brake belonging to said assembly of which said first main hydraulic motor forms a part.
Les avantageuses dispositions suivantes sont en outre, de préférence, adoptées :
- ledit premier élément du troisième moteur est rendu solidaire vis-à-vis de la rotation de l'élément périphérique du premier moteur hydraulique principal au moyen d'une bride intermédiaire, distincte desdits troisième moteur et premier moteur hydraulique principal ;
- une bride d'adaptation est fixée sur la partie périphérique du carter de frein, cependant que ledit couvercle de carter de frein constitue, en outre, un organe de poussée d'organes de freinage que comporte le frein, un organe élastique de rappel étant interposé entre le couvercle de carter de frein et ladite bride d'adaptation, la bride intermédiaire étant constituée par ladite bride d'adaptation.
- said first element of the third motor is made integral with respect to the rotation of the peripheral element of the first main hydraulic motor by means of an intermediate flange, distinct from said third motor and first main hydraulic motor;
- an adaptation flange is fixed on the peripheral part of the brake housing, while said brake housing cover further constitutes a member for pushing the braking members which the brake comprises, an elastic return member being interposed between the brake housing cover and said adapter flange, the intermediate flange being constituted by said adapter flange.
L'avantage principal de l'invention réside dans le fait que l'évidement axial ménagé dans l'arbre de frein permet le passage d'un arbre d'entraînement reliant la masse excentrée à son moteur d'entraînement, tout en rendant possible de placer le moteur hydraulique d'entraînement du rouleau de compactage coaxialement audit rouleau de compactage et d'entraîner ainsi directement ce rouleau de compactage.The main advantage of the invention lies in the fact that the axial recess in the brake shaft allows the passage of a drive shaft connecting the eccentric mass to its drive motor, while making it possible to place the hydraulic motor for driving the compacting roller coaxially with said compacting roller and thus directly drive this compacting roller.
L'invention sera mieux comprise, et des caractéristiques secondaires et leurs avantages apparaîtront au cours de la description d'une réalisation donnée ci-dessous à titre d'exemple.The invention will be better understood, and secondary characteristics and their advantages will appear during the description of an embodiment given below by way of example.
Il est entendu que la description et les dessins ne sont donnés qu'à titre indicatif et non limitatif.It is understood that the description and the drawings are given for information only and are not limiting.
Il sera fait référence aux dessins annexés, dans lesquels :
- la figure 1 est une coupe axiale d'un ensemble, conforme à l'invention, d'un moteur hydraulique et d'un frein qui y est attelé ; et
- la figure 2 est une coupe schématique d'un rouleau de compacteur et des moteurs freins pour son entraînement.
- Figure 1 is an axial section of an assembly, according to the invention, a hydraulic motor and a brake which is coupled thereto; and
- Figure 2 is a schematic section of a compactor roller and brake motors for its drive.
Le moteur représenté sur la figure 1 est un moteur hydraulique associé à un frein à disques multiples, l'ensemble comprenant :
- un élément périphérique de moteur, en deux
parties 1A et 1B, lapartie 1A présentant une face intérieure constituant une came ondulée de réaction 2, prolongée axialement, par rapport à unaxe 10, par lesupport 3 d'un palier unique àbilles 4, et, lapartie 1B, assemblée à lapartie 1A, avec interposition d'un joint d'étanchéité 5, par desvis 6, comportant un alésage étagé 7 ; - un élément central de
moteur 8, qui constitue le bloc-cylindres du moteur hydraulique, dans lequel sont ménagés descylindres 9 disposés radialement par rapport à l'axe 10 et angulairement régulièrement espacés, cet élément central comprenant lesupport 11 complémentaire dusupport 3 et réalisant avec celui-ci et lesbilles 4 un palier de rotation d'axe 10 ; une face plane 12 de communication dans laquelle débouchent des conduits de cylindres 13 reliés à deschambres 14 de travail d'un fluide, ménagées dans lescylindres 9, face plane perpendiculaire à l'axe 10 ; descannelures 15, dont est muni un alésage du bloc-cylindres 8, coaxiales à l'axe 10 ; et une face transversale 16, qui constitue une première extrémité axiale de l'ensemble du moteur hydraulique et du frein, dans laquelle débouchent destaraudages 17 permettant la fixation dubloccylindres 8, par exemple sur un voile transversal 78 dont est muni l'un 60 des 59, 60 d'un compacteur (figure 2) ;rouleaux - des
pistons 18 montés coulissants dans lescylindres 9 et ménageant avec ceux-cilesdites chambres 14 de travail d'un fluide ; - des
rouleaux 19 montés aux extrémités externes despistons 18, un par piston, d'axes parallèles à l'axe 10, maintenus axialement par des butées axiales 20 et susceptibles d'être en appui de roulement sur la came de réaction 2 ; - un distributeur interne de
fluide 21 qui constitue un noyau dont la face axiale extérieure 22 est complémentaire de celle de l'alésage étagé 7, ce distributeur interne 21 comportant : une face plane 23, de distribution, perpendiculaire à l'axe 10 et en appui sensiblement étanche sur la face decommunication 12 dubloccylindres 8 ; des conduits dedistribution 24, qui débouchent dans la face dedistribution 23 de manière à pouvoir communiquer avec les orifices des conduits de cylindres 13 par lesquels ceux-ci débouchent dans la face decommunication 12, et qui relient ladite face dedistribution 23 à des 25, 26 ménagées dans l'alésage étagé 7 de lagorges partie 1B de l'élément périphérique au moteur ; un ensemble de pions et d'encoches 127 réalisant la solidarisation vis-à-vis de la rotation autour de l'axe 10, du distributeur interne 21 et de laditepartie 1B ; et une face transversale 31 perpendiculaire à l'axe 10, qui constitue l'autre extrémité axiale du moteur hydraulique, qui s'étend donc axialement sur une longueur D1 ; - des
27, 28, ménagés dans laconduits partie 1B de l'élément périphérique 1A-1B, reliant lesdites 25, 26 à des conduits externes 29, 30, respectivement, ceux-ci constituant l'un un conduit d'alimentation en fluide sous pression, l'autre un conduit d'échappement de fluide, et réciproquement ;gorges - une partie périphérique 32 de carter de frein, qui comporte deux faces transversales 33, 34 perpendiculaires à l'axe 10 et s'étend donc axialement sur une longueur D32, la face transversale 33 étant placée en appui sur la face d'extrémité 31 de la
partie 1B, avec interposition d'un joint d'étanchéité 36 et la partie périphérique 32 du carter de frein étant fixée sur laditepartie 1B du moteur hydraulique par desvis 35 ; - un arbre de
frein 37 qui s'étend coaxialement à l'axe 10, en regard descannelures 15 du bloc-cylindres 8, d'unalésage 38 que comporte le distributeur interne 21, et de la partie périphérique 32 du carter de frein, en grande partie le long des longueurs D1 et D32 ; cet arbre de frein comportant descannelures 39 qui coopèrent avec lescannelures 15 du bloc-cylindres 8 pour rendre solidaires,vis-à-vis de la rotation d'axe 10, lebloccylindres 8 et l'arbre defrein 37 ; un évidement axial 40, traversant entièrement ledit arbre defrein 37 et, en l'espèce, coaxial à l'axe 10 ; et une portée cylindrique d'extrémité 41 ; - un
couvercle 42 de carter de frein comportant un alésage traversant 42A, monté coulissant, parallèlement à l'axe 10, par rapport à la portée cylindrique 41 et par rapport à unalésage 43 que comporte la partie périphérique 32 du carter de frein ; - des joints d'étanchéité 44, 45, 46 : le joint d'étanchéité 44 étant interposé entre l'alésage 42A du
couvercle 42 et la portée cylindrique 41 ; le joint d'étanchéité 45 étant interposé entre lecouvercle 42 et l'alésage 43 ; et, le joint d'étanchéité 46 étant interposé entre l'arbre defrein 37 et l'alésage axial du bloc-cylindres 8, l'ensemble de l'arbre defrein 37, de la partie périphérique 32 du carter de frein et ducouvercle 42 délimitant une chambre étanche 47 ; - un
conduit 48, ménagé dans la partie périphérique 32 du carter de frein, reliant lachambre 47 à un conduit externe 49 susceptible de contenir un fluide sous pression ou d'être au contraire mis en communication avec un réservoir de fluide sans pression ; - des disques de frein solidaires vis-à-vis de la rotation, les disques de
frein 50 de l'arbre defrein 37, les disques defrein 51 de la partie périphérique 32 du carter de frein, les disques de 50, 51 étant alternés et constituant un empilage de disques de frein disposé en regard d'une face transversale 52 de poussée, appartenant aufrein couvercle 42 ; - une bride d'adaptation 53, qui est fixée sur la partie périphérique 32 du carter de frein par des
vis 54, en étant placée en appui sur la face d'extrémité 34 de ladite partie périphérique 32, cette bride d'adaptation 53 présentant un alésage axial 55, d'axe 10, et destaraudages 56 permettant la fixation d'une structure, telle que lecarter 79 d'un autre moteur hydraulique 76 ; - une rondelle élastique 57 prend appui sur la face transversale interne 58 de la bride d'adaptation 53 et tend à pousser le
couvercle 42 dans le sens mettant en appui laface 52 de ce couvercle sur l'extrémité de l'empilage des 50, 51, c'est-à-dire dans le sens aboutissant au freinage, l'action de ladisques rondelle 57 étant antagoniste de celle de la pression du fluide éventuellement contenu dans lachambre 47, qui permet l'obtention du défreinage des disques de 50, 51.frein
- a peripheral motor element, in two
1A and 1B, theparts part 1A having an inner face constituting a corrugated reaction cam 2, extended axially, relative to anaxis 10, by thesupport 3 of a single ball bearing 4 , and,part 1B, assembled inpart 1A, with the interposition of aseal 5, byscrews 6, comprising a stepped bore 7; - a
central engine element 8, which constitutes the cylinder block of the hydraulic motor, in which are providedcylinders 9 arranged radially with respect to theaxis 10 and angularly regularly spaced, this central element comprising thesupport 11 complementary to thesupport 3 and producing with the latter and theballs 4 an axis of rotation bearing 10; aplanar face 12 of communication into which open cylinder conduits 13 connected tochambers 14 for working with a fluid, formed in thecylinders 9, planar face perpendicular to theaxis 10;grooves 15, which is provided with a bore of thecylinder block 8, coaxial with theaxis 10; and atransverse face 16, which constitutes a first axial end of the assembly of the hydraulic motor and the brake, into whichopen threads 17 allowing the fixing of thecylinder blocks 8, for example on atransverse web 78 which is provided with one 60 59, 60 of a compactor (Figure 2);rollers -
pistons 18 slidably mounted in thecylinders 9 and providing therewith saidchambers 14 for working with a fluid; -
rollers 19 mounted at the outer ends of thepistons 18, one per piston, with axes parallel to theaxis 10, held axially byaxial stops 20 and capable of being in rolling bearing on the reaction cam 2; - an
internal fluid distributor 21 which constitutes a core whose external axial face 22 is complementary to that of the stepped bore 7, thisinternal distributor 21 comprising: aflat face 23, of distribution, perpendicular to theaxis 10 and in support substantially sealed on thecommunication face 12 of thecylinder blocks 8;distribution conduits 24, which open into thedistribution face 23 so as to be able to communicate with the orifices of the cylinder conduits 13 through which these open into thecommunication face 12, and which connect saiddistribution face 23 to 25, 26 formed in the stepped bore 7 ofgrooves part 1B of the element peripheral to the engine; a set of pins andnotches 127 making the connection with respect to the rotation about theaxis 10, theinternal distributor 21 and saidpart 1B; and a face transverse 31 perpendicular to theaxis 10, which constitutes the other axial end of the hydraulic motor, which therefore extends axially over a length D1; -
27, 28, formed inconduits part 1B of theperipheral element 1A-1B, connecting said 25, 26 togrooves 29, 30, respectively, these constituting one of a fluid supply conduit under pressure, the other a fluid exhaust duct, and vice versa;external conduits - a
peripheral part 32 of the brake housing, which has twotransverse faces 33, 34 perpendicular to theaxis 10 and therefore extends axially over a length D32, the transverse face 33 being placed in abutment on theend face 31 ofpart 1B, with the interposition of aseal 36 and theperipheral part 32 of the brake housing being fixed to saidpart 1B of the hydraulic motor byscrews 35; - a
brake shaft 37 which extends coaxially to theaxis 10, opposite thegrooves 15 of thecylinder block 8, abore 38 which includes theinternal distributor 21, and theperipheral part 32 of the brake housing, largely along the lengths D1 and D32; this brakeshaft comprising splines 39 which cooperate with thesplines 15 of thecylinder block 8 to make integral, vis-à-vis theaxis rotation 10, thecylinders 8 and thebrake shaft 37; anaxial recess 40, passing entirely through saidbrake shaft 37 and, in this case, coaxial with theaxis 10; and a cylindrical end bearing 41; - a
brake housing cover 42 having a throughbore 42A, slidably mounted, parallel to theaxis 10, with respect to thecylindrical surface 41 and with respect to abore 43 which comprises theperipheral part 32 of the brake housing; -
44, 45, 46: theseals seal 44 being interposed between thebore 42A of thecover 42 and thecylindrical surface 41; theseal 45 being interposed between thecover 42 and thebore 43; and, theseal 46 being interposed between thebrake shaft 37 and the axial bore of thecylinder block 8, the assembly of theshaft brake 37, of theperipheral part 32 of the brake housing and of thecover 42 delimiting a sealedchamber 47; - a
conduit 48, formed in theperipheral part 32 of the brake housing, connecting thechamber 47 to anexternal conduit 49 capable of containing a fluid under pressure or of being on the contrary placed in communication with a reservoir of fluid without pressure; - brake discs integral with respect to the rotation, the
brake discs 50 of thebrake shaft 37, thebrake discs 51 of theperipheral part 32 of the brake housing, the 50, 51 being alternating and constituting a stack of brake discs disposed opposite abrake discs transverse thrust face 52, belonging to thecover 42; - an
adapter flange 53, which is fixed to theperipheral part 32 of the brake housing byscrews 54, while being placed in abutment on theend face 34 of saidperipheral part 32, thisadapter flange 53 having aaxial bore 55,axis 10, andthreads 56 allowing the attachment of a structure, such as thecasing 79 of anotherhydraulic motor 76; - an
elastic washer 57 is supported on the internaltransverse face 58 of theadaptation flange 53 and tends to push thecover 42 in the direction bearing theface 52 of this cover on the end of the stack of 50, 51, that is to say in the direction leading to the braking, the action of thediscs washer 57 being antagonistic to that of the pressure of the fluid possibly contained in thechamber 47, which allows the release of the 50, 51.brake discs
Il convient d'observer que l'arbre de frein 37 traverse entièrement le moteur, notamment son bloc-cylindres 8 et son distributeur interne de fluide 21, et, le frein, y compris le couvercle 42 de son carter (32-42). De plus, l'évidement axial 40 traversant lui-même entièrement l'arbre de frein 37, il est possible de faire passer une liaison, telle qu'un arbre de transmission de mouvement, à travers l'ensemble du moteur et du frein, en traversant l'évidement axial 40, comme cela est décrit dans l'exemple d'application représenté sur la figure 2.It should be observed that the
La figure 2 représente schématiquement les deux rouleaux cylindriques de compactage 59, 60 d'un compacteur.FIG. 2 schematically represents the two
Ce compacteur comprend :
un bâti 61 ;- deux bras latéraux 62 fixés (63) sur le bâti 61 ;
- deux moteurs hydrauliques principaux 64, 65,
l'un d'eux 64, appartenant à l'ensemble décrit en regard de la figure 1; le carter 66 du moteur hydraulique 65, constituant son stator, est fixé (67) sur l'un des bras latéraux 62, cependant que lerotor 68 du moteur hydraulique 65, monté rotatif par rapport au stator au moyen d'un palier 69, est rendu solidaire (70) vis-à-vis d'une rotation d'axe 10d'une plaque 71 reliée à un voile transversal 72 que comporte le rouleau de compactage 59 par l'intermédiaire de plots élastiques 73 d'isolation vibratoire ;- le moteur 64, dont l'élément périphérique 1A-1B
comporte une plaque 74 reliée au deuxième bras latéral 62 par l'intermédiaire de plots élastiques 75, et dont l'élément central 8 est fixé (77) sur un voile transversal 78 que comporte le rouleau de compactage 60 ; - un troisième moteur 76 a
son stator 79 fixé (87) sur labride d'adaptation 53, constituant donc une bride intermédiaire entre l'élément périphérique 1A-1B du moteur 64 et leditstator 79, et ason rotor 80 rendu solidaire (83), vis-à-vis de la rotation, d'un arbre 81 qui s'étend à l'intérieur des rouleaux de compactage 59, 60, notamment entre leurs voiles transversaux 72, 78, qui le supportent par l'intermédiaire de paliers 82,lesdits stator 79et rotor 80 étant montés à rotation relativepar un palier 86 ; et l'arbre 81 traversant l'ensemble du moteur 64 et du frein qui y est accouplé, en traversant l'évidement axial 40 de l'arbre de frein 37 ; une masse 84, excentrée par rapport à l'axe 10, est solidaire de l'arbre 81 ;un palier 85 est en outre interposé entre des extrémités 59A, 60A, qui se chevauchent, des deux rouleaux de compactage 59, 60.
- a
frame 61; - two
lateral arms 62 fixed (63) to theframe 61; - two main
64, 65, one of them 64, belonging to the assembly described with reference to FIG. 1;hydraulic motors - the
casing 66 of thehydraulic motor 65, constituting its stator, is fixed (67) to one of thelateral arms 62, while therotor 68 of thehydraulic motor 65, mounted rotatably relative to the stator by means of abearing 69, is secured (70) vis-à-vis anaxis rotation 10 of aplate 71 connected to atransverse web 72 which comprises the compactingroller 59 by means ofelastic pads 73 of vibration isolation; - the
motor 64, whoseperipheral element 1A-1B comprises aplate 74 connected to the secondlateral arm 62 by means ofelastic studs 75, and whosecentral element 8 is fixed (77) on atransverse web 78 which comprises the compactingroller 60; - a
third motor 76 has itsstator 79 fixed (87) on theadaptation flange 53, thus constituting an intermediate flange between theperipheral element 1A-1B of themotor 64 and saidstator 79, and has itsrotor 80 made integral (83 ), with respect to the rotation, of ashaft 81 which extends inside the compacting 59, 60, in particular between theirrollers 72, 78, which support it by means oftransverse webs bearings 82, saidstator 79 androtor 80 being mounted in relative rotation by abearing 86; and theshaft 81 passing through the assembly of themotor 64 and the brake which is coupled thereto, passing through theaxial recess 40 of thebrake shaft 37; - a
mass 84, eccentric with respect to theaxis 10, is integral with theshaft 81; - a
bearing 85 is also interposed between ends 59A, 60A, which overlap, of the two compacting 59, 60.rollers
Les observations suivantes doivent être formulées :
- chacun des trois moteurs 64, 65
et 76, de la figure 2 est monté rotatif autour du mêmeaxe 10 ; - les entraînements des deux rouleaux de compactage 59, 60 sont réalisés sans aucune interposition d'éléments d'engrenages, notamment par fixation directe du
rotor 68 sur laplaque 70, durotor 8 sur le voile 78, et durotor 80 sur l'arbre 81 ; - dans le moteur 64, identique à celui de la figure 1, l'élément central 8 est constitué par le bloc-cylindres, l'élément périphérique 1A-1B constituant le carter : les dispositions de l'invention s'appliqueraientaussi bien à un moteur dont l'élément périphérique serait constitué par un bloc-cylindres, l'élément central étant alors constitué par la came ;
- pour parvenir à réaliser des entraînements directs, donc simples, les moteurs hydrauliques 64, 65 ont été choisis parmi les moteurs dits à vitesse lente et à couple élevé ;
- le moteur 76 effectivement adopté est un moteur hydraulique à vitesse élevée et à faible couple ; ce moteur est avantageusement de type hydraulique, car le circuit d'alimentation des moteurs principaux 64, 65 n'est pas rendu beaucoup plus complexe par la prévision de l'alimentation en fluide d'un troisième moteur 76 ; le moteur 76 pourrait cependant en variante ne pas être de type hydraulique (être électrique, par exemple) ;
- sur la figure 2,
50, 51 et l'arbre de frein 37 de l'ensemble auquel appartient le moteur 64 n'ont pas été représentés, mais existent bien.le frein
- each of the three
64, 65 and 76, of FIG. 2 is rotatably mounted around themotors same axis 10; - the drives of the two
59, 60 are produced without any interposition of gear elements, in particular by direct fixing of thecompaction rollers rotor 68 on theplate 70, of therotor 8 on theweb 78, and of therotor 80 on theshaft 81; - in the
engine 64, identical to that of FIG. 1, thecentral element 8 is constituted by the cylinder block, theperipheral element 1A-1B constituting the casing: the provisions of the invention would apply equally to an engine whose peripheral element would be constituted by a cylinder block, the central element then being constituted by the cam; - to achieve direct drives, therefore simple, the
64, 65 were chosen from so-called slow speed motors and high torque;hydraulic motors - the
motor 76 actually adopted is a high speed, low torque hydraulic motor; this motor is advantageously of the hydraulic type, since the supply circuit for the 64, 65 is not made much more complex by providing for the supply of fluid to amain motors third motor 76; themotor 76 could however alternatively not be of the hydraulic type (being electric, for example); - in Figure 2, the
50, 51 and thebrake brake shaft 37 of the assembly to which themotor 64 belongs have not been shown, but do exist.
Il peut être constaté que l'évidement axial 40, que comporte l'ensemble de la figure 1, permet la traversée axiale du moteur et du frein par n'importe quel élément, tel que l'arbre 81 de la figure 2, cet élément pouvant être autre qu'un arbre d'entraînement et pouvant, par exemple, dans certaines applications différentes être constitué par des tuyauteries ou des instruments de mesure. Les joints d'étanchéité 44, 45, 46 assurent un fonctionnement satisfaisant de l'ensemble, alors que la bride d'adaptation 53, qui permet l'adaptation de tout troisième moteur 76 à l'entraînement de l'arbre 81, fait en outre fonction debutée d'appui pour la rondelle élastique 57.It can be seen that the
L'invention n'est pas limitée à la réalisation décrite, mais en couvre au contraire toutes les variantes qui pourraient lui être apportées sans sortir de son cadre, ni de son esprit.The invention is not limited to the embodiment described, but on the contrary covers all the variants which could be made to it without departing from its scope or its spirit.
Notamment, elle reçoit également application aux ensembles, dans lesquels la partie périphérique 32 du carter de frein est monobloc avec la partie 1B de l'élément périphérique du carter moteur, ensembles, bien entendu munis d'un couvercle 42 amovible (fixation amovible par l'intermédiaire de la bride 53 et des vis 54) ; et aux ensembles, dans lesquels le carter de frein est monobloc (partie périphérique 32 et couvercle 42 monoblocs), fixée sur la partie 1B du carter moteur par des moyens d'une fixation amovible.In particular, it also applies to assemblies, in which the
Claims (6)
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
FR9104596A FR2675204B1 (en) | 1991-04-15 | 1991-04-15 | HYDRAULIC MOTOR AND BRAKE ASSEMBLY AND COMPACTOR USING THE SAME. |
FR9104596 | 1991-04-15 |
Publications (2)
Publication Number | Publication Date |
---|---|
EP0509898A1 true EP0509898A1 (en) | 1992-10-21 |
EP0509898B1 EP0509898B1 (en) | 1994-12-14 |
Family
ID=9411853
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP92401035A Expired - Lifetime EP0509898B1 (en) | 1991-04-15 | 1992-04-14 | System with a hydraulic motor having a brake and application to a vibratory compactor |
Country Status (4)
Country | Link |
---|---|
US (1) | US5390495A (en) |
EP (1) | EP0509898B1 (en) |
DE (1) | DE69200885T2 (en) |
FR (1) | FR2675204B1 (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
FR2748500A1 (en) * | 1996-05-09 | 1997-11-14 | Vaillant Christian | Controller of amplitude of vibration applied to compacting roller for road surfacing |
Families Citing this family (12)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US6336729B1 (en) | 1999-05-20 | 2002-01-08 | Richard Pavelle | Emergency light device |
US6241420B1 (en) * | 1999-08-31 | 2001-06-05 | Caterpillar Paving Products Inc. | Control system for a vibratory compactor |
JP3728179B2 (en) * | 2000-06-01 | 2005-12-21 | 酒井重工業株式会社 | Vibration roller |
US6826909B2 (en) * | 2001-11-08 | 2004-12-07 | Parker-Hannifin Corp. | Hydraulic gerotor motor with integral shuttle valve |
US6561729B1 (en) | 2001-12-14 | 2003-05-13 | Caterpillar Paving Products Inc. | Compacting drum for a work machine |
US6837650B2 (en) | 2002-12-17 | 2005-01-04 | Caterpillar Paving Products Inc | Split drum for a compacting work machine |
DE10301576B4 (en) * | 2003-01-16 | 2006-07-27 | Lohmann & Stolterfoht Gmbh | Compact drive, especially for single drum compactors |
US7186056B2 (en) * | 2004-08-13 | 2007-03-06 | Caterpillar Paving Products Inc | Split drum and support arrangement for a compacting work machine |
US7695258B2 (en) * | 2006-05-08 | 2010-04-13 | White Drive Products, Inc. | Gerotor motor and brake assembly |
WO2010045316A1 (en) * | 2008-10-14 | 2010-04-22 | Clark Equipment Company | Skid steer loaders with variable isolation on vibratory roller |
US9254913B2 (en) * | 2013-11-05 | 2016-02-09 | Goodrich Corporation | Hybrid braking system and apparatus |
DE102015117382A1 (en) * | 2015-10-13 | 2017-04-13 | Hamm Ag | Device for detecting the movement of a compressor roller |
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US3865207A (en) * | 1971-04-23 | 1975-02-11 | Hyster Co | Hydraulic feed for wheel motors |
FR2330557A1 (en) * | 1975-11-04 | 1977-06-03 | Newage Engineers Ltd | IMPROVEMENTS TO ENGINE GROUPS ON RO EU |
US4398843A (en) * | 1980-12-05 | 1983-08-16 | Caterpillar Tractor Co. | Self-aligning arrangement for the eccentric mounting shaft of a vibratory compactor |
FR2541636A1 (en) * | 1983-02-25 | 1984-08-31 | Linde Ag | Drive by hydraulic motor, incorporating a friction brake |
US4568218A (en) * | 1984-07-16 | 1986-02-04 | Wacker Corporation | Adjustably controllable centrifugal vibratory exciter |
US4732507A (en) * | 1987-03-03 | 1988-03-22 | M-B-W, Inc. | Walk behind soil compactor having a double vibratory drum and an articulated frame |
GB2209142A (en) * | 1987-08-25 | 1989-05-04 | Stothert & Pitt Plc | Vibratory roller |
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US4089616A (en) * | 1977-05-06 | 1978-05-16 | Iowa Manufacturing Company | Vibratory split roll |
FR2529978A1 (en) * | 1982-07-12 | 1984-01-13 | Poclain Hydraulics Sa | DISC BRAKING DEVICE WITH PRESSURE FLUID DEFREINING CONTROL |
US4568212A (en) * | 1984-04-16 | 1986-02-04 | Liberty Diversified Industries, Inc. | Printer stand |
DE3441625A1 (en) * | 1984-11-14 | 1986-05-22 | Wacker-Werke Gmbh & Co Kg, 8077 Reichertshofen | VIBRATION ROLLER, IN PARTICULAR DUMB ROLLER |
FI72782C (en) * | 1985-03-20 | 1987-07-10 | Valmet Oy | HYDRAULISK MOTOR. |
US5082396A (en) * | 1989-12-08 | 1992-01-21 | Wacker Corporation | Vibratory roller |
-
1991
- 1991-04-15 FR FR9104596A patent/FR2675204B1/en not_active Expired - Fee Related
-
1992
- 1992-04-08 US US07/865,322 patent/US5390495A/en not_active Expired - Lifetime
- 1992-04-14 DE DE69200885T patent/DE69200885T2/en not_active Expired - Fee Related
- 1992-04-14 EP EP92401035A patent/EP0509898B1/en not_active Expired - Lifetime
Patent Citations (7)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3865207A (en) * | 1971-04-23 | 1975-02-11 | Hyster Co | Hydraulic feed for wheel motors |
FR2330557A1 (en) * | 1975-11-04 | 1977-06-03 | Newage Engineers Ltd | IMPROVEMENTS TO ENGINE GROUPS ON RO EU |
US4398843A (en) * | 1980-12-05 | 1983-08-16 | Caterpillar Tractor Co. | Self-aligning arrangement for the eccentric mounting shaft of a vibratory compactor |
FR2541636A1 (en) * | 1983-02-25 | 1984-08-31 | Linde Ag | Drive by hydraulic motor, incorporating a friction brake |
US4568218A (en) * | 1984-07-16 | 1986-02-04 | Wacker Corporation | Adjustably controllable centrifugal vibratory exciter |
US4732507A (en) * | 1987-03-03 | 1988-03-22 | M-B-W, Inc. | Walk behind soil compactor having a double vibratory drum and an articulated frame |
GB2209142A (en) * | 1987-08-25 | 1989-05-04 | Stothert & Pitt Plc | Vibratory roller |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
FR2748500A1 (en) * | 1996-05-09 | 1997-11-14 | Vaillant Christian | Controller of amplitude of vibration applied to compacting roller for road surfacing |
Also Published As
Publication number | Publication date |
---|---|
FR2675204B1 (en) | 1993-08-06 |
FR2675204A1 (en) | 1992-10-16 |
EP0509898B1 (en) | 1994-12-14 |
DE69200885D1 (en) | 1995-01-26 |
DE69200885T2 (en) | 1995-05-11 |
US5390495A (en) | 1995-02-21 |
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