FR2465920A1 - Coupling with overload protection - has pre-loaded elastic bushes between races in which recesses are formed - Google Patents

Coupling with overload protection - has pre-loaded elastic bushes between races in which recesses are formed Download PDF

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Publication number
FR2465920A1
FR2465920A1 FR8019936A FR8019936A FR2465920A1 FR 2465920 A1 FR2465920 A1 FR 2465920A1 FR 8019936 A FR8019936 A FR 8019936A FR 8019936 A FR8019936 A FR 8019936A FR 2465920 A1 FR2465920 A1 FR 2465920A1
Authority
FR
France
Prior art keywords
hub
races
coupling
recesses
overload protection
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.)
Withdrawn
Application number
FR8019936A
Other languages
French (fr)
Inventor
Marek Cywinski
Marian Mikolajczak
Maria Zgrabczynska
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.)
PRZEMYSLOWY INSTYTUT MASZYN
Original Assignee
PRZEMYSLOWY INSTYTUT MASZYN
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 PRZEMYSLOWY INSTYTUT MASZYN filed Critical PRZEMYSLOWY INSTYTUT MASZYN
Publication of FR2465920A1 publication Critical patent/FR2465920A1/en
Withdrawn legal-status Critical Current

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Classifications

    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16DCOUPLINGS FOR TRANSMITTING ROTATION; CLUTCHES; BRAKES
    • F16D7/00Slip couplings, e.g. slipping on overload, for absorbing shock
    • F16D7/04Slip couplings, e.g. slipping on overload, for absorbing shock of the ratchet type
    • F16D7/06Slip couplings, e.g. slipping on overload, for absorbing shock of the ratchet type with intermediate balls or rollers
    • F16D7/10Slip couplings, e.g. slipping on overload, for absorbing shock of the ratchet type with intermediate balls or rollers moving radially between engagement and disengagement

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  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Mechanical Operated Clutches (AREA)
  • Transmission Devices (AREA)

Abstract

The coupling with overload protection comprises an outer ring, a hub, and driving members between. These members are pre-loaded elastic bushes (1) fitted between the races on ring (2) and hub (3). Recesses (4) are formed in one of the races, so as to offer rolling resistance to the bushes. Since there is only rolling, and no sliding, friction between the components, wear is greatly reduced.

Description

La présente invention concerne un manchon d'accouplement de sûreté à l'encontre des surcharges, destiné à protéger contre la destruction des mécanismes en rotation de machines. The present invention relates to a safety coupling sleeve against overloads, intended to protect against destruction of the rotating machinery mechanisms.

Les dispositifs connus de ce genre sont équipés d'éléments d'entraînement transmettant les forces du couple exercé et se présentant sous forme de galets, billes, chevilles profilées, disques dentés, disques à friction, etc. ainsi que de pièces élastiques telles que ressorts en hélice ou autres, rondelles
Belleville, galets en caoutchouc, etc., lesquelles assurent une pression des éléments d'entraînement sur une partie profilée active ou passive du manchon. Néanmoins, ces manchons ont un défaut, à savoir : dans la transmission par les éléments d'entraSnement apparaissent, sur le moyeu et dans l'enveloppe extérieure, des phdnomènes tels que frottement de glissement ainsi que des forces dynamiques considérables, lesquels sont la cause d'usure intensive des divers éléments ainsi que d'un fonctionnement instable.
Known devices of this kind are equipped with drive elements transmitting the forces of the torque exerted and being in the form of rollers, balls, profiled pins, toothed discs, friction discs, etc. as well as elastic parts such as coil springs or others, washers
Belleville, rubber rollers, etc., which provide pressure for the drive elements on an active or passive profiled part of the sleeve. However, these sleeves have a defect, namely: in the transmission by the drive elements appear, on the hub and in the outer casing, phenomena such as sliding friction as well as considerable dynamic forces, which are the cause intensive wear of the various elements as well as unstable operation.

Le manchon d'accouplement selon l'invention élimine ces inconvénients, étant équipé de douilles flexibles d'entraf- nement, associant aussi bien les caractéristiques d'éléments d'entrainement que de pièces flexibles. Le fonctionnement des douilles flexibles est basé sur le principe du frottement de roulement, sans qu'il se produise de glissement ou patinage. Ces douilles flexibles sont montées avec une certaine déformation entre les chemins de roulement de la bague extérieure et du moyeu. L'un de ces chemins de roulement possède de légères cavités, ou dépressions, engendrant un moment de résistance, lequel résulte de la flexion des douilles d'entraînement, lesquelles présentent cependant une rigidité relative.L'emploi de douilles flexibles d'entraînement dans l'accouplement de l'invention élimine les possibilités de frottement de glissement et introduit les frottements de roulement réduisant considérablement l'usure des surfaces de travail du manchon. Ces douilles flexibles introduisent également une certaine souplesse du manchon en torsion, prévenant les surcharges, et rétablissent un fonctionnement progressif après une surcharge. The coupling sleeve according to the invention eliminates these drawbacks, being equipped with flexible drive bushings, combining both the characteristics of drive elements and flexible parts. The operation of flexible sockets is based on the principle of rolling friction, without slipping or slipping. These flexible bushings are mounted with a certain deformation between the raceways of the outer ring and of the hub. One of these raceways has slight cavities, or depressions, generating a moment of resistance, which results from the bending of the drive sleeves, which however have a relative rigidity. The use of flexible drive sleeves in the coupling of the invention eliminates the possibilities of sliding friction and introduces rolling friction considerably reducing the wear of the working surfaces of the sleeve. These flexible sockets also introduce a certain flexibility of the torsional sleeve, preventing overloads, and restore progressive operation after an overload.

Cette conception d'accouplement est très simple et facile à réaliser, ce qui a été vérifié aux essais. This coupling design is very simple and easy to perform, which has been verified in tests.

Les objets et avantages de l'invention seront mieux
compris à l'aide de la description qui va suivre d'exemples préférés de réalisation, et des dessins annexés, sur lesquels
- la figure 1 est une vue en élévation, avec une partie en coupe, selon un plan passant par l'axe géométrique de rotation, du manchon ;
- la figure 2 est une demi-coupe transversale et une demi-vue en bout du manchon de la figure 1
- la figure 3 est une coupe schématique à échelle agrandie de l'une des douilles d'entraînement placée entre les chemins de roulement des bague, ou enveloppe, extérieure et moyeu, le chemin extérieur comportant une légère cavité, ou dépression ;
- la figure 4 est une coupe analogue à la figure 3 d'une variante, dans laquelle la dépression est ménagée sur le chemin de roulement du moyeu.
The objects and advantages of the invention will be better
understood with the aid of the description which follows of preferred embodiments, and of the appended drawings, in which
- Figure 1 is an elevational view, with a sectional section along a plane passing through the geometric axis of rotation, of the sleeve;
- Figure 2 is a half cross-section and a half end view of the sleeve of Figure 1
- Figure 3 is a schematic section on an enlarged scale of one of the drive bushings placed between the raceways of the ring, or casing, outer and hub, the outer track having a slight cavity, or depression;
- Figure 4 is a section similar to Figure 3 of a variant, in which the depression is formed on the raceway of the hub.

Ce nouveau manchon d'accouplement élastique comporte des douilles flexibles 1 d'entrainement, insérées entre les chemins de roulement de l'enveloppe 2 et du moyeu 3. Dans cette réalisation, le chemin de roulement du moyeu 3 comporte de légères cavités 4 et, dans la variante de la figure 4, le chemin de roulement de l'enve- loppe extérieure 2 présente de légères cavités 5. A la bague extérieure 2 (figure 1), sont fixés des disques, ou plateaux, latéraux 6, constituant des butées en cas de déplacement longitudinal des douilles 1 d'entraînement, de la bague extérieure 2 et du moyeu 3. This new elastic coupling sleeve includes flexible drive bushings 1, inserted between the raceways of the casing 2 and of the hub 3. In this embodiment, the raceway of the hub 3 has light cavities 4 and, in the variant of Figure 4, the raceway of the outer casing 2 has slight cavities 5. To the outer ring 2 (Figure 1), are fixed discs, or trays, side 6, constituting stops in the event of longitudinal displacement of the drive bushings 1, the outer ring 2 and the hub 3.

Ce nouveau dispositif, étant interposé dans des mécanismes de rotation de machines, fonctionne de la façon suivante l'élément d'entratnement peut etre soit l'enveloppe extérieure 2 avec ses disques 6, soit le moyeu 3, ceci selon l'un ou l'autre des sens de rotation. This new device, being interposed in machinery rotation mechanisms, operates as follows the drive element can be either the outer casing 2 with its discs 6, or the hub 3, this according to one or the other. other direction of rotation.

En fonctionnement, les douilles d'entrainement 1 roulent dans les cavités 5 (figure 4) du chemin de roulement de l'enveloppe 2 ou dans les cavités 4 du chemin de roulement du moyeu 3 (figure 3). Par ces déplacements, on obtient la souplesse en rotation du dispositif. Dans le déplacement relatif de l'enveloppe 2 et du moyeu 3, les cavités, ménagées sur l'un des chemins de roulement, opposent une distance sur les douilles flexibles 1, selon une surface inclinée. In operation, the drive bushes 1 roll in the cavities 5 (FIG. 4) of the raceway of the casing 2 or in the cavities 4 of the raceway of the hub 3 (FIG. 3). By these displacements, the flexibility in rotation of the device is obtained. In the relative movement of the casing 2 and the hub 3, the cavities, formed on one of the raceways, oppose a distance on the flexible bushings 1, according to an inclined surface.

Claims (1)

R E V E N D I C A T I O N  R E V E N D I C A T I O N Manchon d'accouplement élastique de sûreté à l'encontre des surcharges, comprenant une enveloppe extérieure, un moyeu et des éléments d'entrainement, et caractérisé en ce que les éléments d'entrainement sont des douilles flexibles montées, avec une certaine compression, entre les chemins de roulement de l'enveloppe et du moyeu et en ce que l'un des deux chemins de roulement de l'enveloppe extérieure et du moyeu comporte de légères cavités ou dépressions destinées à exercer une résistance au roulement sur les douilles d'entraînement.  Elastic safety coupling against overloads, comprising an outer casing, a hub and drive elements, and characterized in that the drive elements are flexible sockets mounted, with a certain compression, between the raceways of the casing and of the hub and in that one of the two raceways of the outer casing and of the hub has slight cavities or depressions intended to exert rolling resistance on the drive bushings .
FR8019936A 1979-09-19 1980-09-16 Coupling with overload protection - has pre-loaded elastic bushes between races in which recesses are formed Withdrawn FR2465920A1 (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
PL21843779A PL218437A1 (en) 1979-09-19 1979-09-19

Publications (1)

Publication Number Publication Date
FR2465920A1 true FR2465920A1 (en) 1981-03-27

Family

ID=19998477

Family Applications (1)

Application Number Title Priority Date Filing Date
FR8019936A Withdrawn FR2465920A1 (en) 1979-09-19 1980-09-16 Coupling with overload protection - has pre-loaded elastic bushes between races in which recesses are formed

Country Status (4)

Country Link
DE (1) DE3032637A1 (en)
FR (1) FR2465920A1 (en)
IT (1) IT8068446A0 (en)
PL (1) PL218437A1 (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2000032359A1 (en) * 1998-12-03 2000-06-08 Ingersoll-Rand Company Rotational energy storage device and tools incorporating same

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3368310D1 (en) * 1982-11-13 1987-01-22 Vorwerk Co Interholding Overload protection in couplings
DE4124637A1 (en) * 1991-07-25 1993-01-28 Schaeffler Waelzlager Kg Sprung belt tensioning assembly - has freewheel also acting as friction brake to dampen arm without separate friction sleeves
DE4300083A1 (en) * 1993-01-06 1994-07-07 Masch Und Werkzeugbau Gmbh Overload coupling for torque transfer

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
LU35284A1 (en) *
FR1093588A (en) * 1953-11-09 1955-05-06 Fabrications Ind Et Automobile Mechanical transmission with clutch mechanism
FR1180232A (en) * 1957-07-27 1959-06-02 Transmission joint between coaxial shafts, fitted with shock absorbing devices and torsional overloads
GB1467757A (en) * 1975-06-27 1977-03-23 Excel Corp Torque limiting coupling
US4056953A (en) * 1974-03-04 1977-11-08 Furlette James L Torque limiting coupling
US4143525A (en) * 1976-05-14 1979-03-13 Harry Major Accumulating roll conveyor

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
LU35284A1 (en) *
FR1093588A (en) * 1953-11-09 1955-05-06 Fabrications Ind Et Automobile Mechanical transmission with clutch mechanism
FR1180232A (en) * 1957-07-27 1959-06-02 Transmission joint between coaxial shafts, fitted with shock absorbing devices and torsional overloads
US4056953A (en) * 1974-03-04 1977-11-08 Furlette James L Torque limiting coupling
GB1467757A (en) * 1975-06-27 1977-03-23 Excel Corp Torque limiting coupling
US4143525A (en) * 1976-05-14 1979-03-13 Harry Major Accumulating roll conveyor

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2000032359A1 (en) * 1998-12-03 2000-06-08 Ingersoll-Rand Company Rotational energy storage device and tools incorporating same
US6196332B1 (en) 1998-12-03 2001-03-06 Ingersoll-Rand Company Rotational energy storage device and tools incorporating same

Also Published As

Publication number Publication date
IT8068446A0 (en) 1980-09-18
PL218437A1 (en) 1981-04-10
DE3032637A1 (en) 1981-04-09

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