EP1301313A1 - Percussive apparatus such as a rock breaker - Google Patents

Percussive apparatus such as a rock breaker

Info

Publication number
EP1301313A1
EP1301313A1 EP01931830A EP01931830A EP1301313A1 EP 1301313 A1 EP1301313 A1 EP 1301313A1 EP 01931830 A EP01931830 A EP 01931830A EP 01931830 A EP01931830 A EP 01931830A EP 1301313 A1 EP1301313 A1 EP 1301313A1
Authority
EP
European Patent Office
Prior art keywords
tool
key
sleeve
percussion device
piston
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.)
Granted
Application number
EP01931830A
Other languages
German (de)
French (fr)
Other versions
EP1301313B1 (en
Inventor
Jean Sylvain Comarmond
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Montabert SAS
Original Assignee
Montabert SAS
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Family has litigation
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Application filed by Montabert SAS filed Critical Montabert SAS
Publication of EP1301313A1 publication Critical patent/EP1301313A1/en
Application granted granted Critical
Publication of EP1301313B1 publication Critical patent/EP1301313B1/en
Anticipated expiration legal-status Critical
Revoked legal-status Critical Current

Links

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B25—HAND TOOLS; PORTABLE POWER-DRIVEN TOOLS; MANIPULATORS
    • B25D—PERCUSSIVE TOOLS
    • B25D17/00—Details of, or accessories for, portable power-driven percussive tools
    • B25D17/08—Means for retaining and guiding the tool bit, e.g. chucks allowing axial oscillation of the tool bit
    • B25D17/082—Retainers consisting of a swinging yoke or latching means
    • 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
    • E02F3/96—Dredgers; Soil-shifting machines mechanically-driven with arrangements for alternate or simultaneous use of different digging elements
    • E02F3/966—Dredgers; Soil-shifting machines mechanically-driven with arrangements for alternate or simultaneous use of different digging elements of hammer-type tools
    • E—FIXED CONSTRUCTIONS
    • E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
    • E02F—DREDGING; SOIL-SHIFTING
    • E02F5/00—Dredgers or soil-shifting machines for special purposes
    • E02F5/30—Auxiliary apparatus, e.g. for thawing, cracking, blowing-up, or other preparatory treatment of the soil
    • E02F5/305—Arrangements for breaking-up hard ground

Definitions

  • the subject of the present invention is a percussion device of the rock breaker type, comprising a body in which is slidably mounted a piston driven alternately by an incompressible fluid under pressure, this body containing part of a tool which is guided in translation in a wear sleeve, the end of the tool located inside the body being subjected to repeated shocks from the piston, while the other end protrudes from the body and is intended to bear on the rock or the like to be destroyed .
  • Such an apparatus is intended to be carried by a machine, such as a backhoe or a backhoe, for use in demolition or breaking of blocks in quarry.
  • the wear bushing (s) which guide the tool in translation are generally assembled in the body of the device, either by diametric tightening, or by keying, or else are made captive between two parts of the body of the device.
  • the tool is retained in the axial direction of movement by one or more transverse keys penetrating into a transverse groove that the tool comprises, and into the bore of the lower part of the body of the apparatus, called guide before.
  • the body of the device is, for its part, mounted in a frame which makes it possible to hold the device on the carrier machine and to protect it from external shocks.
  • the chassis holds the body of the device using conventional assembly means independent of those mentioned above.
  • the object of the invention is to provide a percussion device of the rock breaker type, which has a simple structure, and in which the main components are assembled in a simple and rapid manner.
  • At least one of the tool retaining pins passes through aligned holes made in the body, in the wear bushing, and projects beyond the inside the internal cylindrical space of the sleeve, the tool having a transverse groove for the passage of the key.
  • the tool retaining means are used to secure the wear bushing in the body.
  • the sleeve has a through notch, perpendicular to the axis of the sleeve, and extending over a part of the periphery thereof.
  • the distance between the upper shoulder of the socket forming a stop for the tool and the lower edge of the part of the key projecting into the socket is less than the distance between the end of the tool intended to come into abutment against the shoulder and the edge of the groove situated on the side of the free end of the tool.
  • this apparatus comprising a tubular chassis of circular or non-circular section, inside which the body is mounted, and which is provided with means of attachment to a machine
  • the tubular chassis has transverse holes corresponding to those formed in the body to allow the passage of each assembly key which also passes through the socket, the body and ensures the retention of the tool.
  • the assembly means defined above therefore also serve to secure the tubular frame to the body.
  • the latter in order to locally reinforce the tubular part of the chassis, the latter includes bosses in the zones into which the holes open for the passage of each key.
  • the bosses are provided with housings for mounting retaining circlips for each key.
  • Figure 1 is an exploded perspective view of a first device
  • Figure 2 is a longitudinal sectional view in the assembled position;
  • Figure 3 is a cross-sectional view along the line III-III of Figure 2;
  • Figure 4 is a perspective view of a tubular frame for mounting the body of the apparatus of Figures 1 to 3;
  • Figure 5 is a longitudinal sectional view of the device mounted in the frame of Figure 4;
  • Figure 6 is a cross-sectional view of another device mounted inside the tubular frame, this sectional view being taken along line VI-VI of Figure 5;
  • Figure 7 is a cross-sectional view of another device mounted inside a tubular frame of non-circular section.
  • Figures 1 to 3 show a first device comprising a body 2 equipped with a socket 3, inside which is slidably mounted a tool 4 of circular section.
  • the body 2 has a bore 5, in which a piston 6 is slidably mounted, the reciprocating movement of which is ensured by a hydraulic fluid directed by a distributor 7 connected to high pressure 9 and low pressure 10 conduits.
  • the tool 4 has a groove 12, in which is engaged a transverse key 13, which passes through two holes 14 formed in the body 2, as well as a through notch 15 formed in the socket 3. This key can be held in place with pins 16. It should be noted that the dimension of the groove 12, considered in the axial direction, is greater than the diameter of the key 13.
  • the distance between the shoulder 17 of the sleeve 3 forming an upper stop for the tool and the lower edge of the part of the key 13 projecting into the sleeve is less than the distance between the end of the tool intended to bear against the shoulder 17 of the sleeve and the edge of the groove 12 located on the side of the free end of the tool.
  • the key 13 therefore fulfills a double function, on the one hand, of axial retention of the tool 4 when the device is lifted and, on the other hand, of locking the socket 3 inside the body 2.
  • FIG. 4 represents a tubular chassis 20 inside which is intended to be mounted the body 2.
  • This chassis comprises a fixing plate 22 on a carrier machine whose arm is designated by the general reference 23.
  • the chassis comprises two holes coaxial 24 opening at two bosses 25 locally reinforcing the tubular part of the chassis. These two holes 24 serve for the passage of the key 13 which already carries out the axial retention of the tool 4 and the fixing of the socket 3 in the body 2.
  • FIG. 6 shows an alternative embodiment of this device, seen in cross section along the line VI-VI of Figure 5.
  • the device comprises two keys 13 arranged symmetrically on either side of the tool 4 , the latter then having two symmetrical grooves 12.
  • the bosses 25 are housings for retaining rings 26 for holding the keys 13.
  • FIG. 7 represents a device similar to that of FIG. 6, but in which the body 2 and the chassis 20 have a rectangular shape.
  • the blocking in rotation of the body 2 and of the chassis 20 is obtained by the association of the two rectangular shapes embedded in one another.
  • the keys 13 realize the rotation blocking of these two parts.
  • the number of keys 13 implemented depends on the geometry of the tool and the power of the percussion device.
  • the invention brings a great improvement to the existing technique by providing an impact device of simple structure, and in which several components are assembled in a simple and rapid manner using keys fulfilling several functions. .
  • the invention is not limited to the sole embodiments of this device, described above by way of examples, on the contrary it embraces all variants.
  • the chassis could not be tubular, but formed by braced plates, without thereby departing from the scope of the invention.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Mining & Mineral Resources (AREA)
  • Civil Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Structural Engineering (AREA)
  • Percussive Tools And Related Accessories (AREA)
  • Compositions Of Oxide Ceramics (AREA)
  • Disintegrating Or Milling (AREA)
  • Earth Drilling (AREA)
  • Walking Sticks, Umbrellas, And Fans (AREA)
  • Crushing And Pulverization Processes (AREA)
  • Crushing And Grinding (AREA)
  • Drilling And Exploitation, And Mining Machines And Methods (AREA)
  • Processing Of Stones Or Stones Resemblance Materials (AREA)

Abstract

The invention concerns an apparatus comprising a body (2) wherein a piston (6) is mounted sliding alternately driven by an incompressible fluid under pressure, said body containing part of a tool (4) which is guided in translation in a wear sleeve (3), the end of the tool located inside the body being subjected to the repeated impacts of the piston (6), while the other end projects beyond the body and is designed to be supported on the rock or analogue to be destroyed, the tool being retained in the body by at least a transverse key (13). One of the keys (13) retaining the tool passes through aligned holes provided in the body (2), into the wear sleeve (3), and overlaps inside the inner cylindrical space of the sleeve, the tool (4) having a transverse groove (12) for the key (13) to pass through.

Description

APPAREIL A PERCUSSION DU TYPE BRISE-ROCHE BREAKER-TYPE PERCUSSION APPARATUS
La présente invention a pour objet un appareil à percussion du type brise-roche, comprenant un corps dans lequel est monté coulissant un piston entraîné alternativement par un fluide incompressible sous pression, ce corps contenant une partie d'un outil qui est guidé en translation dans une douille d'usure, l'extrémité de l'outil situé à l'intérieur du corps étant soumise aux chocs répétés du piston, tandis que l'autre extrémité dépasse du corps et est destinée à prendre appui sur la roche ou similaire à détruire. Un tel appareil est destiné à être porté par une machine, telle qu'une pelleteuse ou un tracto-pelle, pour une utilisation en démolition ou en cassage de blocs en carrière.The subject of the present invention is a percussion device of the rock breaker type, comprising a body in which is slidably mounted a piston driven alternately by an incompressible fluid under pressure, this body containing part of a tool which is guided in translation in a wear sleeve, the end of the tool located inside the body being subjected to repeated shocks from the piston, while the other end protrudes from the body and is intended to bear on the rock or the like to be destroyed . Such an apparatus is intended to be carried by a machine, such as a backhoe or a backhoe, for use in demolition or breaking of blocks in quarry.
La ou les douilles d'usure qui guident l'outil en translation sont en général assemblées dans le corps de l'appareil, soit par serrage diamétral, soit par clavetage, soit encore sont rendues prisonnières entre deux parties du corps de l'appareil.The wear bushing (s) which guide the tool in translation are generally assembled in the body of the device, either by diametric tightening, or by keying, or else are made captive between two parts of the body of the device.
Pour sa part, l'outil est retenu dans le sens axial de déplacement par une ou plusieurs clavettes transversales pénétrant dans une rainure transversale que comporte l'outil, et dans l'alésage de la partie inférieure du corps de l'appareil, appelé guide avant.For its part, the tool is retained in the axial direction of movement by one or more transverse keys penetrating into a transverse groove that the tool comprises, and into the bore of the lower part of the body of the apparatus, called guide before.
Le corps de l'appareil est, quant à lui, monté dans un châssis qui permet de tenir l'appareil sur la machine porteuse et de le protéger des chocs extérieurs.The body of the device is, for its part, mounted in a frame which makes it possible to hold the device on the carrier machine and to protect it from external shocks.
Le châssis maintient le corps de l'appareil à l'aide de moyens d'assemblage classiques et indépendants de ceux mentionnés précédemment.The chassis holds the body of the device using conventional assembly means independent of those mentioned above.
En conséquence, pour des appareils à percussion légers, tels que des brise-roches de moins de 500 kg, le coût associé à ces différents moyens d'assemblage se révèle important. Le but de l'invention est de fournir un appareil à percussion du type brise-roche, qui possède une structure simple, et dans lequel les principaux composants soient assemblés de manière simple et rapide.Consequently, for light percussion devices, such as breakers weighing less than 500 kg, the cost associated with these different means of assembly proves to be significant. The object of the invention is to provide a percussion device of the rock breaker type, which has a simple structure, and in which the main components are assembled in a simple and rapid manner.
A cet effet, dans l'appareil qu'elle concerne, du type précité, au moins l'une des clavettes de retenue de l'outil traverse des trous alignés ménagés dans le corps, dans la douille d'usure, et déborde à l'intérieur de l'espace cylindrique interne de la douille, l'outil présentant une rainure transversale pour le passage de la clavette.To this end, in the apparatus it relates to, of the aforementioned type, at least one of the tool retaining pins passes through aligned holes made in the body, in the wear bushing, and projects beyond the inside the internal cylindrical space of the sleeve, the tool having a transverse groove for the passage of the key.
En conséquence, les moyens de retenue de l'outil sont mis à profit pour réaliser la fixation de la douille d'usure dans le corps. Suivant une caractéristique de l'invention, la douille présente une encoche traversante, perpendiculaire à l'axe de la douille, et s'étendant sur une partie de la périphérie de celle-ci.Consequently, the tool retaining means are used to secure the wear bushing in the body. According to a characteristic of the invention, the sleeve has a through notch, perpendicular to the axis of the sleeve, and extending over a part of the periphery thereof.
Afin de permettre un débattement suffisant de l'outil, la distance entre l'épaulement supérieur de la douille formant butée pour l'outil et le bord inférieur de la partie de la clavette débordant dans la douille est inférieure à la distance entre l'extrémité de l'outil destinée à venir en appui contre l'épaulement et le bord de la rainure située du côté de l'extrémité libre de l'outil.In order to allow sufficient travel of the tool, the distance between the upper shoulder of the socket forming a stop for the tool and the lower edge of the part of the key projecting into the socket is less than the distance between the end of the tool intended to come into abutment against the shoulder and the edge of the groove situated on the side of the free end of the tool.
Suivant une autre caractéristique de cet appareil, comportant un châssis tubulaire de section circulaire ou non, à l'intérieur duquel est monté le corps, et qui est muni de moyens de fixation sur un engin, le châssis tubulaire possède des trous transversaux correspondant à ceux ménagés dans le corps pour permettre le passage de chaque clavette d'assemblage qui traverse également la douille, le corps et assure la retenue de l'outil. Les moyens d'assemblage définis précédemment servent donc également à réaliser la fixation du châssis tubulaire sur le corps.According to another characteristic of this apparatus, comprising a tubular chassis of circular or non-circular section, inside which the body is mounted, and which is provided with means of attachment to a machine, the tubular chassis has transverse holes corresponding to those formed in the body to allow the passage of each assembly key which also passes through the socket, the body and ensures the retention of the tool. The assembly means defined above therefore also serve to secure the tubular frame to the body.
Avantageusement, afin de renforcer localement la partie tubulaire du châssis, celui-ci comporte des bossages dans les zones dans lesquelles débouchent les trous pour le passage de chaque clavette. En vue de réaliser la fixation de chaque clavette, les bossages sont aménagés des logements pour le montage de circlips de retenue de chaque clavette.Advantageously, in order to locally reinforce the tubular part of the chassis, the latter includes bosses in the zones into which the holes open for the passage of each key. In order to secure each key, the bosses are provided with housings for mounting retaining circlips for each key.
De toute façon, l'invention sera bien comprise à l'aide de la description qui suit, en référence au dessin schématique annexé représentant, à titre d'exemples non limitatifs, plusieurs formes d'exécution de cet appareil :In any case, the invention will be clearly understood with the aid of the description which follows, with reference to the appended schematic drawing representing, by way of nonlimiting examples, several embodiments of this device:
Figure 1 est une vue en perspective éclatée d'un premier appareil ;Figure 1 is an exploded perspective view of a first device;
Figure 2 en est une vue en coupe longitudinale en position assemblée ; Figure 3 en est une vue en coupe transversale selon la ligne III- III de figure 2 ;Figure 2 is a longitudinal sectional view in the assembled position; Figure 3 is a cross-sectional view along the line III-III of Figure 2;
Figure 4 est une vue en perspective d'un châssis tubulaire pour le montage du corps de l'appareil de figures 1 à 3 ; Figure 5 est une vue en coupe longitudinale de l'appareil monté dans le châssis de figure 4 ;Figure 4 is a perspective view of a tubular frame for mounting the body of the apparatus of Figures 1 to 3; Figure 5 is a longitudinal sectional view of the device mounted in the frame of Figure 4;
Figure 6 est une vue en coupe transversale d'un autre appareil monté à l'intérieur du châssis tubulaire, cette vue en coupe étant réalisée suivant la ligne VI-VI de figure 5 ; Figure 7 est une vue en coupe transversale d'un autre appareil monté à l'intérieur d'un châssis tubulaire de section non circulaire.Figure 6 is a cross-sectional view of another device mounted inside the tubular frame, this sectional view being taken along line VI-VI of Figure 5; Figure 7 is a cross-sectional view of another device mounted inside a tubular frame of non-circular section.
Les figures 1 à 3 représentent un premier appareil comprenant un corps 2 équipé d'une douille 3, à l'intérieur de laquelle est monté coulissant un outil 4 de section circulaire. Dans sa partie supérieure, le corps 2 comporte un alésage 5, dans lequel est monté coulissant un piston 6 dont le déplacement alternatif est assuré par un fluide hydraulique dirigé par un distributeur 7 relié à des conduits haute pression 9 et basse pression 10. Comme montré aux figures 1 à 3, l'outil 4 comporte une rainure 12, dans laquelle est engagée une clavette transversale 13, qui traverse deux trous 14 ménagés dans le corps 2, ainsi qu'une encoche traversante 15 ménagée dans la douille 3. Cette clavette peut être maintenue en place à l'aide de goupilles 16. Il doit être noté que la dimension de la rainure 12, considérée dans le sens axial, est supérieure au diamètre de la clavette 13. En outre, la distance entre l'épaulement 17 de la douille 3 formant butée supérieure pour l'outil et le bord inférieur de la partie de la clavette 13 débordant dans la douille est inférieure à la distance entre l'extrémité de l'outil destinée à prendre appui contre l'épaulement 17 de la douille et le bord de la rainure 12 situé du côté de l'extrémité libre de l'outil.Figures 1 to 3 show a first device comprising a body 2 equipped with a socket 3, inside which is slidably mounted a tool 4 of circular section. In its upper part, the body 2 has a bore 5, in which a piston 6 is slidably mounted, the reciprocating movement of which is ensured by a hydraulic fluid directed by a distributor 7 connected to high pressure 9 and low pressure 10 conduits. As shown in Figures 1 to 3, the tool 4 has a groove 12, in which is engaged a transverse key 13, which passes through two holes 14 formed in the body 2, as well as a through notch 15 formed in the socket 3. This key can be held in place with pins 16. It should be noted that the dimension of the groove 12, considered in the axial direction, is greater than the diameter of the key 13. In addition, the distance between the shoulder 17 of the sleeve 3 forming an upper stop for the tool and the lower edge of the part of the key 13 projecting into the sleeve is less than the distance between the end of the tool intended to bear against the shoulder 17 of the sleeve and the edge of the groove 12 located on the side of the free end of the tool.
Dans la position d'appui représentée, il est possible de faire fonctionner l'appareil dans de bonnes conditions, les chocs successifs fournis par le piston 6 sur l'outil 4 se transmettant correctement au matériau à démolir.In the support position shown, it is possible to operate the device in good conditions, the successive shocks provided by the piston 6 on the tool 4 being transmitted correctly to the material to be demolished.
Lorsque l'appareil est soulevé, par exemple lors d'une phase de déplacement d'un rocher à un autre, la face 18 de la rainure 12 vient en contact avec la clavette 13 en vue d'assurer la retenue axiale de l'outil 4 par la clavette. La clavette 13 remplit donc une double fonction, d'une part, de retenue axiale de l'outil 4 lorsque l'appareil est soulevé et, d'autre part, de verrouillage de la douille 3 à l'intérieur du corps 2.When the device is lifted, for example during a phase of displacement from one rock to another, the face 18 of the groove 12 comes into contact with the key 13 in order to ensure the axial retention of the tool 4 by the key. The key 13 therefore fulfills a double function, on the one hand, of axial retention of the tool 4 when the device is lifted and, on the other hand, of locking the socket 3 inside the body 2.
La figure 4 représente un châssis tubulaire 20 à l'intérieur duquel est destiné à être monté le corps 2. Ce châssis comporte une platine de fixation 22 sur un engin porteur dont le bras est désigné par la référence générale 23. Le châssis comporte deux trous coaxiaux 24 débouchant au niveau de deux bossages 25 renforçant localement la partie tubulaire du châssis. Ces deux trous 24 servent au passage de la clavette 13 qui réalise déjà la retenue axiale de l'outil 4 et la fixation de la douille 3 dans le corps 2.FIG. 4 represents a tubular chassis 20 inside which is intended to be mounted the body 2. This chassis comprises a fixing plate 22 on a carrier machine whose arm is designated by the general reference 23. The chassis comprises two holes coaxial 24 opening at two bosses 25 locally reinforcing the tubular part of the chassis. These two holes 24 serve for the passage of the key 13 which already carries out the axial retention of the tool 4 and the fixing of the socket 3 in the body 2.
La figure 6 représente une variante d'exécution de ce dispositif, vu en coupe transversale selon la ligne VI-VI de figure 5. Dans ce cas, le dispositif comprend deux clavettes 13 disposées symétriquement de part et d'autre de l'outil 4, celui-ci présentant alors deux rainures symétriques 12. Comme montré à la figure 6, dans les bossages 25 sont aménagés des logements pour des circlips 26 de retenue des clavettes 13.6 shows an alternative embodiment of this device, seen in cross section along the line VI-VI of Figure 5. In this case, the device comprises two keys 13 arranged symmetrically on either side of the tool 4 , the latter then having two symmetrical grooves 12. As shown in FIG. 6, in the bosses 25 are housings for retaining rings 26 for holding the keys 13.
La figure 7 représente un dispositif similaire à celui de figure 6, mais dans lequel le corps 2 et le châssis 20 possèdent une forme rectangulaire. le blocage en rotation du corps 2 et du châssis 20 est obtenu par l'association des deux formes rectangulaires encastrées l'une dans l'autre. Les clavettes 13 réalisent le blocage en rotation de ces deux pièces.FIG. 7 represents a device similar to that of FIG. 6, but in which the body 2 and the chassis 20 have a rectangular shape. the blocking in rotation of the body 2 and of the chassis 20 is obtained by the association of the two rectangular shapes embedded in one another. The keys 13 realize the rotation blocking of these two parts.
Le nombre de clavettes 13 mises en oeuvre est fonction de la géométrie de l'outil et de la puissance de l'appareil à percussion.The number of keys 13 implemented depends on the geometry of the tool and the power of the percussion device.
Comme il ressort de ce qui précède, l'invention apporte une grande amélioration à la technique existante en fournissant un appareil à percussion de structure simple, et dans lequel plusieurs composants sont assemblés de façon simple et rapide à l'aide de clavettes remplissant plusieurs fonctions.As is apparent from the above, the invention brings a great improvement to the existing technique by providing an impact device of simple structure, and in which several components are assembled in a simple and rapid manner using keys fulfilling several functions. .
Comme il va de soi, l'invention ne se limite pas aux seules formes d'exécution de ce dispositif, décrites ci-dessus à titre d'exemples, elle en embrasse au contraire toutes les variantes. C'est ainsi notamment que le châssis pourrait ne pas être tubulaire, mais constitué par des plaques entretoisées, sans que l'on sorte pour autant du cadre de l'invention. As it goes without saying, the invention is not limited to the sole embodiments of this device, described above by way of examples, on the contrary it embraces all variants. Thus, in particular, the chassis could not be tubular, but formed by braced plates, without thereby departing from the scope of the invention.

Claims

REVENDICATIONS
1. Appareil à percussion du type brise-roche comprenant un corps (2) dans lequel est monté coulissant un piston (6) entraîné alternativement par un fluide incompressible sous pression, ce corps contenant une partie d'un outil (4) qui est guidé en translation dans une douille d'usure (3), l'extrémité de l'outil située à l'intérieur du corps étant soumise aux chocs répétés du piston (6), tandis que l'autre extrémité dépasse du corps et est destinée à prendre appui sur la roche ou similaire à détruire, l'outil étant retenu dans le corps par au moins une clavette transversale (13), caractérisé en ce qu'au moins l'une des clavettes (13) de retenue de l'outil traverse des trous alignés (14, 15) ménagés dans le corps (2), dans la douille d'usure (3), et déborde à l'intérieur de l'espace cylindrique interne de la douille, l'outil (4) présentant une rainure transversale (12) pour le passage de la clavette (13).1. Percussion device of the rock breaker type comprising a body (2) in which is slidably mounted a piston (6) driven alternately by an incompressible fluid under pressure, this body containing part of a tool (4) which is guided in translation in a wear sleeve (3), the end of the tool located inside the body being subjected to repeated shocks from the piston (6), while the other end protrudes from the body and is intended to bear on the rock or the like to be destroyed, the tool being retained in the body by at least one transverse key (13), characterized in that at least one of the keys (13) for retaining the tool passes through aligned holes (14, 15) formed in the body (2), in the wear sleeve (3), and protrudes inside the internal cylindrical space of the sleeve, the tool (4) having a transverse groove (12) for the passage of the key (13).
2. Appareil à percussion selon la revendication 1 , caractérisé en ce que la douille (3) présente une encoche traversante (15), perpendiculaire à l'axe de la douille, et s'étendant sur une partie de la périphérie de celle-ci.2. Percussion device according to claim 1, characterized in that the sleeve (3) has a through notch (15), perpendicular to the axis of the sleeve, and extending over a part of the periphery thereof .
3. Appareil à percussion selon l'une des revendications 1 et 2, comportant un châssis tubulaire (20) à l'intérieur duquel est monté le corps, et qui est muni de moyens de fixation (22) sur un engin, caractérisé en ce que le châssis tubulaire (20) possède des trous transversaux (24) correspondant à ceux ménagés dans le corps (2) pour permettre le passage de chaque clavette d'assemblage (13) qui traverse également la douille (3), le corps (2), et assure la retenue de l'outil.3. Percussion device according to one of claims 1 and 2, comprising a tubular frame (20) inside which the body is mounted, and which is provided with fixing means (22) on a machine, characterized in that that the tubular frame (20) has transverse holes (24) corresponding to those formed in the body (2) to allow the passage of each assembly key (13) which also passes through the sleeve (3), the body (2 ), and retains the tool.
4. Appareil à percussion selon la revendication 3, caractérisé en ce que le châssis (20) comporte des bossages (25) dans les zones dans lesquelles débouchent les trous (24) pour le passage de chaque clavette (13). 4. Percussion device according to claim 3, characterized in that the frame (20) has bosses (25) in the areas into which the holes (24) open for the passage of each key (13).
5. Appareil à percussion selon la revendication 4, caractérisé en ce que dans les bossages (25) sont aménagés des logements pour le montage de circlips (26) de retenue de chaque clavette (13). 5. A percussion device according to claim 4, characterized in that in the bosses (25) are housed for mounting circlips (26) retaining each key (13).
EP01931830A 2000-05-12 2001-05-09 Percussive apparatus such as a rock breaker Revoked EP1301313B1 (en)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
FR0006095 2000-05-12
FR0006095A FR2808720B1 (en) 2000-05-12 2000-05-12 BREAKER TYPE PERCUSSION APPARATUS
PCT/FR2001/001403 WO2001085398A1 (en) 2000-05-12 2001-05-09 Percussive apparatus such as a rock breaker

Publications (2)

Publication Number Publication Date
EP1301313A1 true EP1301313A1 (en) 2003-04-16
EP1301313B1 EP1301313B1 (en) 2009-01-14

Family

ID=8850169

Family Applications (1)

Application Number Title Priority Date Filing Date
EP01931830A Revoked EP1301313B1 (en) 2000-05-12 2001-05-09 Percussive apparatus such as a rock breaker

Country Status (16)

Country Link
US (1) US6857482B2 (en)
EP (1) EP1301313B1 (en)
JP (1) JP2004513791A (en)
KR (1) KR100755987B1 (en)
CN (1) CN1253289C (en)
AT (1) ATE420749T1 (en)
AU (1) AU783852B2 (en)
BR (1) BR0110793A (en)
CA (1) CA2408130C (en)
DE (1) DE60137427D1 (en)
ES (1) ES2320732T3 (en)
FR (1) FR2808720B1 (en)
IL (1) IL152657A0 (en)
NO (1) NO318398B1 (en)
WO (1) WO2001085398A1 (en)
ZA (1) ZA200208748B (en)

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Publication number Publication date
DE60137427D1 (en) 2009-03-05
US20040011542A1 (en) 2004-01-22
KR20030007596A (en) 2003-01-23
NO20025387D0 (en) 2002-11-11
BR0110793A (en) 2003-05-13
FR2808720B1 (en) 2002-07-26
CA2408130A1 (en) 2001-11-15
IL152657A0 (en) 2003-06-24
CN1253289C (en) 2006-04-26
FR2808720A1 (en) 2001-11-16
AU783852B2 (en) 2005-12-15
WO2001085398A1 (en) 2001-11-15
NO318398B1 (en) 2005-03-14
CA2408130C (en) 2008-08-12
JP2004513791A (en) 2004-05-13
EP1301313B1 (en) 2009-01-14
ZA200208748B (en) 2003-07-28
CN1429145A (en) 2003-07-09
ES2320732T3 (en) 2009-05-28
AU5852201A (en) 2001-11-20
ATE420749T1 (en) 2009-01-15
NO20025387L (en) 2003-01-03
KR100755987B1 (en) 2007-09-06
US6857482B2 (en) 2005-02-22

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