FR2648070A1 - Device for unblocking and mounting devices using a tapered sleeve - Google Patents

Device for unblocking and mounting devices using a tapered sleeve Download PDF

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Publication number
FR2648070A1
FR2648070A1 FR8908225A FR8908225A FR2648070A1 FR 2648070 A1 FR2648070 A1 FR 2648070A1 FR 8908225 A FR8908225 A FR 8908225A FR 8908225 A FR8908225 A FR 8908225A FR 2648070 A1 FR2648070 A1 FR 2648070A1
Authority
FR
France
Prior art keywords
holes
sleeve
hoop
jack
unblocking
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.)
Pending
Application number
FR8908225A
Other languages
French (fr)
Inventor
Jacques Collet
Antoine Roch
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.)
STOLZ SEQUIPAG
Original Assignee
STOLZ SEQUIPAG
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
Application filed by STOLZ SEQUIPAG filed Critical STOLZ SEQUIPAG
Priority to FR8908225A priority Critical patent/FR2648070A1/en
Publication of FR2648070A1 publication Critical patent/FR2648070A1/en
Pending legal-status Critical Current

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Classifications

    • BPERFORMING OPERATIONS; TRANSPORTING
    • B25HAND TOOLS; PORTABLE POWER-DRIVEN TOOLS; MANIPULATORS
    • B25BTOOLS OR BENCH DEVICES NOT OTHERWISE PROVIDED FOR, FOR FASTENING, CONNECTING, DISENGAGING OR HOLDING
    • B25B27/00Hand tools, specially adapted for fitting together or separating parts or objects whether or not involving some deformation, not otherwise provided for
    • B25B27/02Hand tools, specially adapted for fitting together or separating parts or objects whether or not involving some deformation, not otherwise provided for for connecting objects by press fit or detaching same
    • B25B27/04Hand tools, specially adapted for fitting together or separating parts or objects whether or not involving some deformation, not otherwise provided for for connecting objects by press fit or detaching same inserting or withdrawing keys
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B25HAND TOOLS; PORTABLE POWER-DRIVEN TOOLS; MANIPULATORS
    • B25BTOOLS OR BENCH DEVICES NOT OTHERWISE PROVIDED FOR, FOR FASTENING, CONNECTING, DISENGAGING OR HOLDING
    • B25B27/00Hand tools, specially adapted for fitting together or separating parts or objects whether or not involving some deformation, not otherwise provided for
    • B25B27/02Hand tools, specially adapted for fitting together or separating parts or objects whether or not involving some deformation, not otherwise provided for for connecting objects by press fit or detaching same
    • B25B27/026Hand tools, specially adapted for fitting together or separating parts or objects whether or not involving some deformation, not otherwise provided for for connecting objects by press fit or detaching same fluid driven

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Actuator (AREA)

Abstract

The present invention relates to a method for unblocking and mounting an assembly device comprising an expandable sleeve tube 3 and a tapered sleeve 4 which can be forcibly driven into the sleeve tube. According to the invention, this device includes a thrust cylinder 8-9 which can bear on the heads of locking screws 5, which have been partially unscrewed beforehand, and brought into contact with the element 9 of the thrust cylinder and in which the elements 8 and 9 include piercings 11 and 12 which have the same angular arrangement as the unblocking holes 13 of the sleeve 4, and spacers 14 with a threaded end which can be engaged in the said piercings 11 and 12 so that they can be screwed into the unblocking holes 13 in the sleeve, the other threaded end securing the outer element 8 of the thrust cylinder between the shoulder of the spacer 12 and the nut 15.

Description

On peut fixer un moyeu sur un arbre par clavetage, par des cannelures ou frettes coniques. L'assemblage par clavetage nécessite des usinages à tolérances serrées et un défaut de parallélisme, même très faible, entre l'arbre et moyeu provoque des problèmes de montage et une mauvaise répartition des efforts; le jeu inévitable risque d'augmenter sous fortes charges et un blocage axial n'est pas assuré.You can fix a hub on a shaft by keying, by grooves or conical frets. The assembly by keying requires machining with tight tolerances and a lack of parallelism, even very small, between the shaft and the hub causes mounting problems and poor distribution of forces; the inevitable play risks increasing under heavy loads and an axial blocking is not ensured.

L'assemblage par cannelures nécessite un usinage sur une machine spéciale; il présente nécessairement du jeu et n'assure pas non plus un blocage axial.Spline assembly requires machining on a special machine; it necessarily has play and also does not provide axial locking.

Les dispositifs d'assemblage par frettes coniques qui comprennent un manchon expansible et une frette conique qu'on force dans le manchon, évitent ces
divers inconvénients. L'usinage des pièces & assembler est simple et économique puisqu'il ne nécessite que la réalisation d'une portée cylindrique et d'un alésage également cylindrique; tout jeu est éliminé et l'assemblage présente une résistance élevée à la torsion continue ou alternée. Mais le montage, qui se fait actuellement à l'aide d'une série de vis à tête cylindrique réparties angulairement de manière régulière, est long et fastidieux, car il faut assurer un serrage des vis progressivement, en étoile, à l'aide d'une clef dynamométrique réglable sur deux couples intermédiaires et un couple final. Par ailleurs, le déblocage, qui est actuellement assuré à l'aide de vis qu'on visse dans des trous taraudés de la frette et qui viennent repousser le manchon, est souvent difficile. Le déblocage nécessite un personnel qualifié et soigneux. Chaque démontage détériore les frettes coniques, notamment par suite de la formation d'empreintes par les vis de déblocage sur leurs surfaces d'appui.
Conical hoop assembly devices which include an expandable sleeve and a conical hoop that is forced into the sleeve, avoid these
various disadvantages. The machining of parts & assembling is simple and economical since it only requires the production of a cylindrical seat and a bore also cylindrical; all play is eliminated and the assembly has a high resistance to continuous or alternating torsion. But the assembly, which is currently done using a series of cylindrical head screws distributed angularly in a regular manner, is long and tedious, because it is necessary to ensure a tightening of the screws gradually, in a star, using '' a torque wrench adjustable on two intermediate torques and a final torque. Furthermore, the release, which is currently ensured by means of screws which are screwed into tapped holes in the hoop and which push the sleeve back, is often difficult. Unlocking requires qualified and careful personnel. Each dismantling deteriorates the conical hoops, in particular as a result of the formation of fingerprints by the release screws on their bearing surfaces.

La présente invention a pour objet un dispositif propre à assurer le déblocage et éventuellement le montage d'un dispositif d'assemblage par frette conique, qui permet un déblocage et un montage qui sont au contraire rapides et aisés.The present invention relates to a device capable of ensuring the release and possibly the mounting of an assembly device by conical hoop, which allows release and mounting which are on the contrary quick and easy.

Ce dispositif est caractérisé en ce qu'il comporte un vérin qui peut prendre appui sur les têtes des vis de blocage, préalablement dévissées partiellement, et dont les éléments comportent des perçages ayant la même disposition angulaire que les trous de déblocage de la frette, et des entretoises à extrémités filetées dont l'une peut etre engagée dans lesdits perçages de façon à les visser dans les trous de déblocage de la frette, et l'autre permet la solidarisation de l'élément extérieur du vérin entre l'épaulement de l'entretoise et un écrou. Les têtes des vis étant ensuite approchées contre l'élément intérieur du vérin.This device is characterized in that it comprises a jack which can bear on the heads of the locking screws, partially unscrewed beforehand, and the elements of which have holes having the same angular arrangement as the unlocking holes of the hoop, and spacers with threaded ends, one of which can be engaged in said holes so as to screw them into the unlocking holes of the hoop, and the other allows the external element of the jack to be secured between the shoulder of the spacer and nut. The heads of the screws then being approached against the internal element of the jack.

Dans un mode de réalisation de l'invention qui facilite également le montage, les éléments du vérin comportent des perçages ayant la même disposition angulaire que les boulons de blocage et il est prévu des vis auxiliaires qui peuvent être engagées dans ces perçages, de façon à être vissées dans les trous de blocage du manchon, leurs têtes prenant appui sur l'élément extérieur du vérin.In an embodiment of the invention which also facilitates mounting, the elements of the jack comprise holes having the same angular arrangement as the locking bolts and there are provided auxiliary screws which can be engaged in these holes, so as to be screwed into the sleeve's locking holes, their heads resting on the external element of the jack.

On a décrit ci-après, à titre d'exemple non limitatif, un mode de réalisation du dispositif selon l'invention,avec référence au dessin annexé dans lequel
La Figure q est une vue en coupe axiale
du dispositif lors du déblocage d'un
assemblage à frette conique;
La Figure 2 est une vue en plan de la
frette;
La Figure 3 est une vue en coupe d'une
partie du dispositif lors de
l'assemblage.
An embodiment of the device according to the invention has been described below, by way of non-limiting example, with reference to the appended drawing in which
Figure q is an axial sectional view
of the device when unlocking a
conical hoop assembly;
Figure 2 is a plan view of the
fret;
Figure 3 is a sectional view of a
part of the device when
assembly.

Au dessin, on voit un dispositif d'assemblage par frettes coniques qui permet d'assembler un moyeu 1 sur un arbre 2. In the drawing, there is seen an assembly device by conical frets which makes it possible to assemble a hub 1 on a shaft 2.

Ce dispositif d'assemblage comporte un manchon expansible 3 dont la paroi extérieure est cylindrique, alors que sa paroi intérieure est tronconique, et qui est disposé dans un alésage de même diamètre du moyeu 1. I1 comprend également une frette 4 dont la paroi intérieure est cylindrique, au diamètre de la portée de l'arbre 2, alors que sa paroi extérieure est tronconique, avec la même conicité que la paroi intérieure du manchon 3. This assembly device comprises an expandable sleeve 3 whose outer wall is cylindrical, while its inner wall is frustoconical, and which is disposed in a bore of the same diameter of the hub 1. I1 also comprises a hoop 4 whose inner wall is cylindrical, with the diameter of the bearing surface of the shaft 2, while its outer wall is frustoconical, with the same taper as the inner wall of the sleeve 3.

En forçant la frette 4 dans le manchon 3 celui-ci s'expand, ce qui solidarise le moyeu 1 et l'arbre 2.By forcing the hoop 4 in the sleeve 3 it expands, which secures the hub 1 and the shaft 2.

Pour assurer cette opération, il est normalement prévu une série de vis à tête cylindrique 5 dont chacune traverse un perçage cylindrique 5 de la frette 4 et est vissé dans un trou taraudé 7, prévu dans une collerette du manchon 3.To ensure this operation, a series of cylindrical head screws 5 are normally provided, each of which passes through a cylindrical bore 5 of the hoop 4 and is screwed into a tapped hole 7, provided in a collar of the sleeve 3.

Lors qu'on serre ces vis,leurs têtes viennent presser sur la frette 4 et enfoncent cette frette dans le manchon 3.When these screws are tightened, their heads press on the hoop 4 and drive this hoop into the sleeve 3.

Le dispositif selon l'invention comprend un vérin hydraulique 8-9 dont la chambre peut être mise en communication avec une source d'huile sous pression par un orifice 10 prévu dans l'élément 8 du vérin.The device according to the invention comprises a hydraulic cylinder 8-9, the chamber of which can be placed in communication with a source of pressurized oil through an orifice 10 provided in the element 8 of the cylinder.

Les éléments 8-9 du vérin comportent des perçages cylindriques 11 et 12 dont la disposition angulaire est la même que celle de trous taraudés de déblocage 13 normalement prévus dans la frette 4. Dans ces perçages sont disposés des entretoises 14 dont une extrémité filetée est vissée dans un trou 13 et dont l'autre extrémité est empêchée par un écrou 15 de sortir de l'élément 8 du vérin.The elements 8-9 of the jack have cylindrical holes 11 and 12 whose angular arrangement is the same as that of tapped release holes 13 normally provided in the hoop 4. In these holes are arranged spacers 14, one threaded end of which is screwed in a hole 13 and the other end of which is prevented by a nut 15 from coming out of the element 8 of the jack.

Lorsque après desserrage partiel des vis S et leur approche contre l'élément 9 du vérin au moyen d'une clé hexagonale et en traversant les éléments du vérin par les trous 11a-l2a prévus à cet effet, on admet le fluide sous pression dans la chambre du vérin, l'élément 9 vient exercer une pression sur les têtes des vis 5 alors que l'élément 8 vient exercer une traction sur la frette 4 par l'intermédiaire des écrous 15 et des entretoises 14, ce qui extrait la frette 4 du manchon 3. Cette traction est répartie de manière régulière angulairement de sorte que la frette se déplace exactement dans l'axe du manchon, ce qui évite toute détérioration.When after partial loosening of the screws S and their approach against the element 9 of the jack by means of a hexagonal key and crossing the elements of the jack by the holes 11a-l2a provided for this purpose, the fluid under pressure is admitted into the chamber of the jack, the element 9 exerts pressure on the heads of the screws 5 while the element 8 exerts a traction on the hoop 4 by means of the nuts 15 and spacers 14, which extracts the hoop 4 of the sleeve 3. This traction is distributed angularly in a regular manner so that the hoop moves exactly in the axis of the sleeve, which prevents any deterioration.

Le vérin 8-9 peut également être utilisé pour assurer l'enfoncement de la frette 4 dans le manchon 3 et réaliser ainsi l'assemblage. Pour cela, il suffit de prévoir dans ce vérin des perçages cylindriques lla et 12a dont la disposition angulaire est la même que celle des trous 6 et 7; on engage dans ces perçages des vis auxiliaires 16 qu'on visse dans les trous 7 et dont les têtes viennent prendre appui sur l'élément 8 du vérin (3 vis 16 disposées à environ 120 suffisent).The cylinder 8-9 can also be used to ensure the insertion of the hoop 4 into the sleeve 3 and thus perform the assembly. For this, it is sufficient to provide in this cylinder cylindrical holes lla and 12a whose angular arrangement is the same as that of the holes 6 and 7; auxiliary screws 16 are engaged in these holes which are screwed into the holes 7 and the heads of which come to bear on the element 8 of the jack (3 screws 16 arranged at approximately 120 are sufficient).

Lorsqu'on admet alors le fluide sous pression dans ce vérin, l'élément 9 de ce dernier vient prendre appui sur la collerette de la frette 4 alors que les vis auxiliaires tirent sur le manchon 3, ce qui assure l'assemblage. Lorsque celui-ci est réalisé, on retire le vérin et on met en place les boulons 5 à titre de sécurité. La traction du manchon 3 peut être réglée de manière précise par modification de la pression du vérin.When the fluid under pressure is then admitted into this jack, the element 9 of the latter comes to bear on the collar of the hoop 4 while the auxiliary screws pull on the sleeve 3, which ensures the assembly. When this is done, the cylinder is removed and the bolts 5 are put in place for safety. The traction of the sleeve 3 can be adjusted precisely by modifying the pressure of the jack.

Les serrages obtenus hydrauliquement par ce procédé sont largement plus fiables que ceux obtenus au moyen d'une clé dynamométrique dont l'emploi est long et compliqué et dont l'efficacité dépend du sérieux de l'opérateur.The tightenings obtained hydraulically by this process are much more reliable than those obtained using a torque wrench whose use is long and complicated and whose efficiency depends on the reliability of the operator.

Il va de soi que la présente invention ne doit pas être considérée comme limitée au mode de réalisation décrit et représenté, mais en couvre, au contraire, toutes les variantes. It goes without saying that the present invention should not be considered as limited to the embodiment described and shown, but on the contrary covers all variants thereof.

Claims (2)

RevendicationsClaims 1. Dispositif de déblocage et de montage d'un dispositif d'assemblage comprenant un manchon expansible (3) et une frette conique (4) pouvant être enfoncée à force dans le manchon, caractérisé en ce qu'il comporte un vérin (8-9) qui peut prendre appui sur les têtes des vis de blocage (5), préalablement dévissées partiellement, et approchées au contact de l'élément 9 du vérin, et dont les éléments (8 et 9) comportent des perçages (11 et 12) ayant la même disposition angulaire que les trous de déblocage (13) de la frette (4), et des entretoises (14) à extrémité filetée qui peuvent être engagées dans les dits perçages (11 et 12) de façon à les visser dans les trous de déblocage (13) de la frette, l'autre extrémité filetée solidarisant l'élément extérieur (8) du vérin entre l'épaulement de l'entretoise 12 et l'écrou 15.1. Device for unlocking and mounting an assembly device comprising an expandable sleeve (3) and a conical hoop (4) which can be forced into the sleeve, characterized in that it comprises a jack (8- 9) which can bear on the heads of the locking screws (5), partially unscrewed beforehand, and approached in contact with the element 9 of the jack, and the elements (8 and 9) of which have holes (11 and 12) having the same angular arrangement as the unlocking holes (13) of the hoop (4), and spacers (14) with threaded end which can be engaged in said holes (11 and 12) so as to screw them into the holes for unlocking (13) the hoop, the other threaded end joining the external element (8) of the jack between the shoulder of the spacer 12 and the nut 15. 2. Dispositif selon la revendication 1, caractérisé en ce que les éléments (8-9) comportent des perçages (lla et 12a) ayant la même disposition angulaire que les vis de blocage (5) et en ce qu'il comprend des vis auxiliaires (16) qui peuvent être engagées dans ces perçages de façon à être vissées dans les trous de blocage (7) du manchon, leurs têtes prenant appui sur l'élément extérieur (8) du vérin. 2. Device according to claim 1, characterized in that the elements (8-9) comprise holes (lla and 12a) having the same angular arrangement as the locking screws (5) and in that it comprises auxiliary screws (16) which can be engaged in these holes so as to be screwed into the locking holes (7) of the sleeve, their heads bearing on the external element (8) of the jack.
FR8908225A 1989-06-12 1989-06-12 Device for unblocking and mounting devices using a tapered sleeve Pending FR2648070A1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
FR8908225A FR2648070A1 (en) 1989-06-12 1989-06-12 Device for unblocking and mounting devices using a tapered sleeve

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR8908225A FR2648070A1 (en) 1989-06-12 1989-06-12 Device for unblocking and mounting devices using a tapered sleeve

Publications (1)

Publication Number Publication Date
FR2648070A1 true FR2648070A1 (en) 1990-12-14

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Family Applications (1)

Application Number Title Priority Date Filing Date
FR8908225A Pending FR2648070A1 (en) 1989-06-12 1989-06-12 Device for unblocking and mounting devices using a tapered sleeve

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FR (1) FR2648070A1 (en)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN105108705A (en) * 2015-09-06 2015-12-02 国家电网公司 Special tool for disassembling guide vane sleeve of water turbine
CN110125865A (en) * 2019-05-15 2019-08-16 江西洪都精工机械有限公司 A kind of device with ranging, Ding Li and assembly and disassembly precise taper sleeve
CN112078754A (en) * 2020-08-13 2020-12-15 沪东中华造船(集团)有限公司 Installation method of unconstrained expansion joint
CN113319781A (en) * 2021-04-20 2021-08-31 浙江佛尔泰智能设备有限公司 Clamp spring installation device and clamp spring automatic installation device

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN105108705A (en) * 2015-09-06 2015-12-02 国家电网公司 Special tool for disassembling guide vane sleeve of water turbine
CN110125865A (en) * 2019-05-15 2019-08-16 江西洪都精工机械有限公司 A kind of device with ranging, Ding Li and assembly and disassembly precise taper sleeve
CN110125865B (en) * 2019-05-15 2024-03-22 江西洪都精工机械有限公司 Device with range finding, fixed force and install and remove accurate taper sleeve
CN112078754A (en) * 2020-08-13 2020-12-15 沪东中华造船(集团)有限公司 Installation method of unconstrained expansion joint
CN113319781A (en) * 2021-04-20 2021-08-31 浙江佛尔泰智能设备有限公司 Clamp spring installation device and clamp spring automatic installation device

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