ITTO960695A1 - TRANSMISSION ELEMENT TO TRANSMIT A COUPLE. - Google Patents
TRANSMISSION ELEMENT TO TRANSMIT A COUPLE. Download PDFInfo
- Publication number
- ITTO960695A1 ITTO960695A1 IT96TO000695A ITTO960695A ITTO960695A1 IT TO960695 A1 ITTO960695 A1 IT TO960695A1 IT 96TO000695 A IT96TO000695 A IT 96TO000695A IT TO960695 A ITTO960695 A IT TO960695A IT TO960695 A1 ITTO960695 A1 IT TO960695A1
- Authority
- IT
- Italy
- Prior art keywords
- hub
- torque
- pressure
- shaft
- transmission
- Prior art date
Links
- 230000005540 biological transmission Effects 0.000 title claims description 19
- 230000008878 coupling Effects 0.000 claims description 12
- 238000010168 coupling process Methods 0.000 claims description 12
- 238000005859 coupling reaction Methods 0.000 claims description 12
- 230000006978 adaptation Effects 0.000 claims 1
- 238000010276 construction Methods 0.000 claims 1
- 239000010720 hydraulic oil Substances 0.000 claims 1
- 230000006835 compression Effects 0.000 description 1
- 238000007906 compression Methods 0.000 description 1
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16D—COUPLINGS FOR TRANSMITTING ROTATION; CLUTCHES; BRAKES
- F16D3/00—Yielding couplings, i.e. with means permitting movement between the connected parts during the drive
- F16D3/02—Yielding couplings, i.e. with means permitting movement between the connected parts during the drive adapted to specific functions
- F16D3/06—Yielding couplings, i.e. with means permitting movement between the connected parts during the drive adapted to specific functions specially adapted to allow axial displacement
- F16D3/065—Yielding couplings, i.e. with means permitting movement between the connected parts during the drive adapted to specific functions specially adapted to allow axial displacement by means of rolling elements
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16C—SHAFTS; FLEXIBLE SHAFTS; ELEMENTS OR CRANKSHAFT MECHANISMS; ROTARY BODIES OTHER THAN GEARING ELEMENTS; BEARINGS
- F16C1/00—Flexible shafts; Mechanical means for transmitting movement in a flexible sheathing
- F16C1/02—Flexible shafts; Mechanical means for transmitting movement in a flexible sheathing for conveying rotary movements
- F16C1/04—Articulated shafts
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16D—COUPLINGS FOR TRANSMITTING ROTATION; CLUTCHES; BRAKES
- F16D3/00—Yielding couplings, i.e. with means permitting movement between the connected parts during the drive
- F16D3/16—Universal joints in which flexibility is produced by means of pivots or sliding or rolling connecting parts
- F16D3/20—Universal joints in which flexibility is produced by means of pivots or sliding or rolling connecting parts one coupling part entering a sleeve of the other coupling part and connected thereto by sliding or rolling members
- F16D3/202—Universal joints in which flexibility is produced by means of pivots or sliding or rolling connecting parts one coupling part entering a sleeve of the other coupling part and connected thereto by sliding or rolling members one coupling part having radially projecting pins, e.g. tripod joints
- F16D3/205—Universal joints in which flexibility is produced by means of pivots or sliding or rolling connecting parts one coupling part entering a sleeve of the other coupling part and connected thereto by sliding or rolling members one coupling part having radially projecting pins, e.g. tripod joints the pins extending radially outwardly from the coupling part
- F16D3/2055—Universal joints in which flexibility is produced by means of pivots or sliding or rolling connecting parts one coupling part entering a sleeve of the other coupling part and connected thereto by sliding or rolling members one coupling part having radially projecting pins, e.g. tripod joints the pins extending radially outwardly from the coupling part having three pins, i.e. true tripod joints
Landscapes
- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Health & Medical Sciences (AREA)
- Oral & Maxillofacial Surgery (AREA)
- Mechanically-Actuated Valves (AREA)
- Mechanical Operated Clutches (AREA)
- Input Circuits Of Receivers And Coupling Of Receivers And Audio Equipment (AREA)
- Measuring Pulse, Heart Rate, Blood Pressure Or Blood Flow (AREA)
- Burglar Alarm Systems (AREA)
Description
DESCRIZIONE DESCRIPTION
del brevetto per Invenzione Industriale di of the patent for Industrial Invention of
La presente invenzione si riferisce ad un elemento di trasmissione per trasmettere una coppia. The present invention relates to a transmission element for transmitting a torque.
Elementi di trasmissione di questo tipo sono, per esempio, parti componenti di alberi cardanici. A tale scopo, l'elemento di trasmissione noto è disposto tra due teste a crociera. Inoltre, l'elemento di trasmissione comprende una parte esterna a manicotto (manicotto scorrevole), che è fissata ad una testa a crociera, ed una parte interna racchiusa concentrica al manicotto scorrevole (mosso), che è fissata all'altra testa a crociera. Il manicotto scorrevole ed il mozzo sono solidali a rotazione, ma mobili reciprocamente in direzione assiale, così da poter accettare compensazioni in lunghezza. Transmission elements of this type are, for example, component parts of cardan shafts. For this purpose, the known transmission element is arranged between two cross heads. Furthermore, the transmission element comprises an outer sleeve part (sliding sleeve), which is fixed to a cross head, and an inner part enclosed concentric to the sliding sleeve (moved), which is fixed to the other cross head. The sliding sleeve and the hub are rotationally integral, but mutually movable in the axial direction, so as to be able to accept compensations in length.
Per realizzare il collegamento solidale a rotazione tra manicotto scorrevole e mozzo vi sono varie possibilità. Cosi si possono, per esempio, adottare accoppiamenti a rulli (EP 0552 801). Un tale accoppiamento a rulli comprende due parti principali: una parte è dotata di numerosi rullini, i cui assi di rotazione sono in generale perpendicolari alla direzione dell'asse di detta parte, e sono disposti sul perimetro della parte, mentre l'altra parte è dotata di guide, che si estendono praticamente nella direzione dell'asse di questa altra parte e costituiscono le guide dei rullini. There are various possibilities to make the integral rotational connection between the sliding sleeve and the hub. Thus it is possible, for example, to adopt roller couplings (EP 0552 801). Such a roller coupling comprises two main parts: one part is equipped with numerous rollers, the axes of rotation of which are generally perpendicular to the direction of the axis of said part, and are arranged on the perimeter of the part, while the other part is equipped with guides, which extend practically in the direction of the axis of this other part and constitute the guides of the rollers.
Invece di un giunto a rulli si può,'per esempio, anche impiegare una dentatura, in cui il mozzo ha la forma di albero scanalato, ed il manicotto scorrevole ha una dentatura interna corrispondente. In questo modo si ottiene da un lato un collegamento solidale a rotazione, dall'altro la possibilità di scorrimento in direzione assiale. Instead of a roller coupling, for example, a toothing can also be used, in which the hub has the shape of a splined shaft, and the sliding sleeve has a corresponding internal toothing. In this way, on the one hand, a rotationally integral connection is obtained, and on the other hand the possibility of sliding in the axial direction.
Con tratti di trasmissione di questo tipo è spesso necessario incorporare un giunto di sicurezza il quale, quando si supera un valore massimo di torsione accettabile, disaccoppia due parti di un tratto di trasmissione collegate tra di loro. Un giunto di sicurezza noto serve a collegare un albero con un mozzo. Esso è costituito nel modo seguente: una di queste due parti di macchina, albero o mozzo, presenta un taglio di espansione cilindrico che è disposto coassiale con l'asse comune dell'albero e del mozzo, e che presenta una apertura di adduzione. L'apertura La parte scorrevole 3 comprende, radialmente dall'interno all'esterno, le seguenti parti costruttive: un albero 10 fissato alla testa a crociera 2, solidale a rotazione con questa mediante un collegamento a vite 2.1. L'albero è racchiuso da un mozzo 20. Il mozzo è racchiuso da un manicotto scorrevole 30. With transmission sections of this type it is often necessary to incorporate a safety coupling which, when an acceptable maximum torque value is exceeded, decouples two parts of a transmission section connected to each other. A known safety coupling serves to connect a shaft to a hub. It is constituted as follows: one of these two machine parts, shaft or hub, has a cylindrical expansion cut which is arranged coaxial with the common axis of the shaft and hub, and which has an inlet opening. The opening The sliding part 3 comprises, radially from the inside to the outside, the following constructive parts: a shaft 10 fixed to the cross head 2, rotationally integral with this by means of a screw connection 2.1. The shaft is enclosed by a hub 20. The hub is enclosed by a sliding sleeve 30.
Il mozzo 20 e il manicotto scorrevole 30 sono collegati solidalmente a rotazione mediante un giunto a rulli. Il giunto a rulli comprende tre rullini 21.1, 21.2 21.3 che sono disposti nel mozzo 20, dall'altro lato delle guide 31.1, 31.2 e 31.3, in cui ruotano i rulli suddetti. Un giunto a rulli di questo tipo è pure chiamato "tripode". The hub 20 and the sliding sleeve 30 are integrally connected in rotation by means of a roller joint. The roller joint comprises three rollers 21.1, 21.2 21.3 which are arranged in the hub 20, on the other side of the guides 31.1, 31.2 and 31.3, in which the aforementioned rollers rotate. A roller joint of this type is also called a "tripod".
Alla base del giunto a rulli vi sono il mozzo 20 ed il manicotto scorrevole 30, da un lato solidali tra di loro in modo da trasmettere una coppia dal mozzo 20 al manicotto scorrevole 30, mentre dall'altro lato di queste due parti, mozzo 20 e manicotto scorrevole 30, nel senso della lunghezza, cioè nella direzione dell'asse dell'unità di trasmissione, sono mobili l'uno rispetto all'altro. At the base of the roller joint there are the hub 20 and the sliding sleeve 30, on one side integral with each other so as to transmit a torque from the hub 20 to the sliding sleeve 30, while on the other side of these two parts, hub 20 and sliding sleeve 30, lengthwise, i.e. in the direction of the axis of the transmission unit, are movable relative to each other.
Nell'unità di trasmissione è integrato un giunto di sicurezza. Questo comprende un taglio di espansione 1.1. Questo è orientato concentricamente all'asse per attrito. Per mezzo del tripode, la coppia del mozzo 20 viene trasmessa al manicotto scorrevole 30, formando un accoppiamento dinamico temporaneo. A safety coupling is integrated in the drive unit. This includes an expansion cut 1.1. This is oriented concentrically to the axis by friction. By means of the tripod, the torque of the hub 20 is transmitted to the sliding sleeve 30, forming a temporary dynamic coupling.
Se la coppia trasmessa supera un valore massimo stabilito, esiste un problema. In questo caso la forza di compressione del manicotto sottile 14 non basta più a sostenere il bloccaggio per attrito con il mozzo 20. Si verifica un certo slittamento<' >e quindi un differenziale di velocità tra l'albero 10 ed il mozzo 20. Questo porta al taglio di una parte della valvola 13, e quindi all'apertura del condotto a pressione 12. La pressione sul taglio di espansione 11 scompare quindi totalmente per cui non esiste più pressione tra il manicotto sottile 14 ed il mozzo 20. La trasmissione della coppia non viene più effettuata, per cui si impedisce, come desiderato, il danneggiamento delle parti componenti interessate. If the transmitted torque exceeds a set maximum value, there is a problem. In this case, the compression force of the thin sleeve 14 is no longer sufficient to support the frictional locking with the hub 20. There is a certain slippage <'> and therefore a speed differential between the shaft 10 and the hub 20. This leads to the cutting of a part of the valve 13, and therefore to the opening of the pressure duct 12. The pressure on the expansion cut 11 therefore completely disappears so that there is no longer any pressure between the thin sleeve 14 and the hub 20. The transmission of the torque is no longer carried out, so that damage to the affected component parts is prevented as desired.
L'albero 10 gira ancora, ma tutti i componenti che sono radialmente all'esterno dell'albero sono fermi, e precisamente il mozzo 20 con il manicotto scorrevole 30 e la guarnizione 32. È importante il fatto che, specialmente tra la guarnizione 32 ed il mozzo 20, non esiste più movimento relativo, per cui anche qui non è più necessaria alcuna particolare disposizione. The shaft 10 still turns, but all the components which are radially outside the shaft are stationary, namely the hub 20 with the sliding sleeve 30 and the seal 32. It is important that, especially between the seal 32 and the hub 20, there is no longer any relative movement, so that here too no particular arrangement is necessary.
Le Fig. 5, 6 e 7 mostrano una forma di realizzazione modificata del dispositivo delle Fig. 1 a 4. Parti corrispondenti sono indicate con gli stessi numeri. Anche in questo caso, vi sono due teste a crociera 1 e 2 ed una parte scorrevole 3. Il mozzo 20, contrariamente alla prima forma di realizzazione, è in questo caso dotato di un manicotto sottile 22. Questo si trova tra il manicotto <' >sottile 14 dell'albero 10 ed un manicotto esterno 15, che forma parte dell'albero 10. Invece del supporto scorrevole 32, è in questo caso necessario un cuscinetto normale. Figs. 5, 6 and 7 show a modified embodiment of the device of Figs. 1 to 4. Corresponding parts are indicated by the same numbers. Also in this case, there are two crossheads 1 and 2 and a sliding part 3. The hub 20, contrary to the first embodiment, is in this case provided with a thin sleeve 22. This is located between the sleeve <' > thin 14 of the shaft 10 and an outer sleeve 15, which forms part of the shaft 10. Instead of the sliding bearing 32, a normal bearing is required in this case.
Se si manifesta un inconveniente ed il raccordo della valvola 13 viene tranciato, l'albero 10, il mozzo 20 ed il manicotto scorrevole 30 si fermano, mentre il mozzo 15 ruota. Si crea così da un lato un differenziale di velocità tra il manicotto scorrevole 30 ed il mozzo 15 e dall'altro invece tra il mozzo 15 ed il mozzo 20. If a drawback occurs and the fitting of the valve 13 is cut off, the shaft 10, the hub 20 and the sliding sleeve 30 stop, while the hub 15 rotates. Thus, on the one hand, a speed differential is created between the sliding sleeve 30 and the hub 15 and on the other hand between the hub 15 and the hub 20.
Una ulteriore possibile forma di realizzazione è illustrata nella Fig. 8. In questo caso, invece del tripode si impiega una dentatura. Il manicotto scorrevole 30 è dotato di questa dentatura 31. Per il resto si vedono nuovamente la valvola tranciabile 13 ed il taglio di espansione 11. A further possible embodiment is illustrated in Fig. 8. In this case, a toothing is used instead of the tripod. The sliding sleeve 30 is equipped with this toothing 31. For the rest, the shear valve 13 and the expansion cut 11 can be seen again.
Claims (2)
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE1995129980 DE19529980A1 (en) | 1995-08-16 | 1995-08-16 | Drive element to transmit torque |
Publications (2)
Publication Number | Publication Date |
---|---|
ITTO960695A1 true ITTO960695A1 (en) | 1998-02-09 |
IT1284745B1 IT1284745B1 (en) | 1998-05-21 |
Family
ID=7769519
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
IT96TO000695A IT1284745B1 (en) | 1995-08-16 | 1996-08-09 | TRANSMISSION ELEMENT TO TRANSMIT A COUPLE. |
Country Status (3)
Country | Link |
---|---|
DE (1) | DE19529980A1 (en) |
FR (1) | FR2739908A1 (en) |
IT (1) | IT1284745B1 (en) |
Families Citing this family (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP1019642B1 (en) | 1998-07-30 | 2006-09-06 | Voith Turbo GmbH & Co. KG | Articulated arrangement for articulated shafts suitable for transmitting torque |
DE29813550U1 (en) * | 1998-07-30 | 1999-12-16 | Voith Turbo Kg | Joint arrangement for the transmission of torque-suitable cardan shafts |
SE531773C2 (en) * | 2007-11-29 | 2009-08-04 | Voith Turbo Safeset Ab | Torque transmitting shaft, such as a so-called cardan shaft |
DE102008007153B4 (en) * | 2008-01-31 | 2010-06-02 | Voith Patent Gmbh | Length adjustable shaft |
Family Cites Families (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE1222006B (en) * | 1961-04-04 | 1966-08-04 | Siemag Siegener Masch Bau | Safety joint spindle for heavy rolling mill drives |
SE425515B (en) * | 1978-06-15 | 1982-10-04 | Metalform Safeset Ab | PRESSURE-POWERED COUPLING |
DE3636167A1 (en) * | 1986-10-24 | 1988-05-05 | Gkn Universal Transmission | LENGTH-CHANGEABLE PTO SHAFT |
DE8816516U1 (en) * | 1988-03-22 | 1989-12-14 | J.M. Voith Gmbh, 7920 Heidenheim, De | |
DE3939600C2 (en) * | 1989-11-30 | 1998-08-20 | Renk Ag | Tooth coupling |
DE4112484C2 (en) * | 1991-04-17 | 1997-07-03 | Renk Tacke Gmbh | Hydraulic safety clutch |
-
1995
- 1995-08-16 DE DE1995129980 patent/DE19529980A1/en not_active Withdrawn
-
1996
- 1996-08-09 IT IT96TO000695A patent/IT1284745B1/en active IP Right Grant
- 1996-08-16 FR FR9610323A patent/FR2739908A1/en active Pending
Also Published As
Publication number | Publication date |
---|---|
DE19529980A1 (en) | 1997-03-06 |
FR2739908A1 (en) | 1997-04-18 |
IT1284745B1 (en) | 1998-05-21 |
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0001 | Granted |