DE2608793A1 - ROTATING CONNECTION FOR TRANSMITTING A FLOW MEDIUM - Google Patents

Description

The invention relates to a rotary joint for the passage of a flow medium, in particular a rotary joint for connecting a stationary pressure source for the flow medium (e.g. air) with a pressure medium actuated Coupling.

The rotary joint according to the invention for connecting stationary and rotating lines for a flow medium is characterized by concentric, relative to each other rotatable inner and outer parts with a space to accommodate the flow medium, removable seals between the parts to prevent the medium from leaking

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ORIGINAL INSPECTED

prevent on the drue;.: of the disturbance meciium responsive iJinricLvtungeii, which act on the seals, and through Channels extending from a space through the parts to the stationary and rotating lines extend.

According to the invention is for the relative rotational movement between A bearing is provided for the inner and outer parts.

The inner part is preferably rotatable relative to the stationary outer part. In this case, the invention Rotary connection preferably includes a fastening device which holds the outer part stationary against rotation, and a rotating device for connecting the inner part to a rotating body rotatable relative to the outer part.

. Advantageously, the inner part has on his circumferentially opposing, spaced, annular abutment surfaces, the outer part being the Inner part between the abutment surfaces to form the Zxvischenraums surrounds and the sliding device is arranged between the abutment surfaces and the outer part. In advantageous Way is the outer part for engagement with the seal between the ends of the outer part and the abutment surfaces axially expandable. In addition, an actuating device which can be actuated by pressure means can advantageously be used for Expanding the outer part may be provided so that it can be brought into engagement with the seal.

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Furthermore, the rotary joint according to the invention is characterized in that the outer part has two coaxial ring elements, one of which has an annular recess in its "adjacent" ring element "inside" an axially movable, annular piston is provided, and a .uurchlaß in the one leading to the recess Kin ^ olement for the supply of pressurized flow medium has behind the piston, which is arranged so that it is axially out of the recess and in Engagement with the other ring element can be brought into the recess when the flow medium stoned under pressure is supplied to separate the two king elements from each other.

According to the invention, a spring is used to retract the expanded outer part provided by drawing the two ring elements together, so that the seal is released.

According to the invention, the space between the inner and outer parts and the recess for the piston are also included connected to a common pressure medium source.

In another embodiment, the outer part two coaxial king components arranged one inside the other, axially movable to one another, a pressure medium supply device for the barely between the king components to separate them and act on the seal, and another seal between have the king components to insert between them

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To prevent leakage of the otrömungsmediums.

In ö-iee-Gir. The intermediate space is advantageously the case between the inner and outer part and the pressure medium metering device connected to a common pressure medium source, -cazu can be a spring to retract the expanded Outer part can be provided by drawing the two ring elements together so that the seal is released. In Advantageously, the spring has a device for automatically compensating for the wear of the seal between the Outer part and the abutment surfaces.

In the framework of the invention, the rotary joint according to the invention, in which the inner part rotates relative to the stationary outer part, connected to a coupling device be, with the pressure medium-actuated coupling part, the inner part is connected to the coaxial rotary movement.

The invention is explained in more detail below with reference to the accompanying drawing. Show it:

Fig. 1 is an end view of a rotary joint according to the invention with part of a coupling device, to which the slewing ring is attached,

FIG. 2 shows an axial section along the line 2-2 of FIG. 1,

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3 shows a section of part of a further one Embodiment of a rotary joint according to the invention with part of a coupling device, to which the slewing ring is attached,

FIG. 4 shows an axial section of a further part of the rotary connection of FIG. 3,

Figure 5 is an end view of part of a third embodiment a rotary joint according to the invention for a coupling device,

6 shows, on an enlarged scale, an axial section along the line 6-6 in FIGS

7 along a partial section on an enlarged scale the line 7-7 of FIG. 5.

In the drawing, the same components have the same reference numbers.

According to FIGS. 1 and 2, a high-performance clutch device, a part of which is identified by the reference number in FIG. 2, for use in a marine gear a pneumatically operated device which is controlled in a known manner by an air pressure pulse. With the reference numeral 11 is a rotary joint for connecting

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There is also an air-actuated rotary mechanism out of the clutch a stationary air pressure supply. The. Rotary connection "has an inner uingnabe 12 to the Outer ring 16 is arranged concentrically. The I; abe 12 and the tion 13 are rotatable relative to each other, i.e. one part is stationary while the other rotates relative to it their common axis rotates, xsei this embodiment It is advantageous that the honeycomb 12 is rotatable while the ring 18 is stationary. Therefore, one end of the hub 12 is circumferentially spaced with radially outwardly extending arranged lugs 13 which are connected by bolts to the coupling device, the Imbe is coaxial with the coupling device. In the vicinity of the At the same end of the cable 12, this is provided with an annular encompassing ¥ iderlager 15, which is axially to the other The end of the honeycomb. Opposite the v / iderlager 15 a surrounding flange 16 is connected to the other end of the hub by fastening screws 17. The stationary Outer ring 18 includes the cable 12 between the abutment 15 and the flange 16. The outer ring 18 has a main ring body 19 with an inner bore 20 in which a sliding bearing 21 is arranged to relative to the body 19 during rotation to hold the hub 12. The side of the body 19 in the wane of the abutment 15 has a radially extending one Area 22 and. a frustoconical surface 23, which extending from the inner periphery of the radial surface 22 to the inner edge of the body, an annular recess 24 is around the

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Inner circumference of the surface 22 is formed around and faces the Abutment 15 out. Kin Aing piston 25 is in the recess arranged, and an inlet channel 26 extends from the outer periphery of the body 19 to the recess 24 to supply compressed air on the hatch side of the piston, as described below, to direct.

A part of the fixed outer ring 28 forming pressure ring 27 surrounds the frustoconical at a distance Surface 23 and lies on the extended side of the piston 25 at. The pressure ring 27 is provided on its outer circumference with a number of spaced radial lugs 28, and the outer periphery of the body 19 is with a similar number of spaced apart radially projecting lugs 29 provided, which are the approaches 28 opposite. Bolts 30 that extend through the lugs 29 are on the lugs 28, with the head of each bolt held from the corresponding lug 28 by a sleeve 31 at a distance which is slidably supported in a bore in the corresponding lug 29 so that the pressure ring 27 on the body 19 is supported. A corresponding compression spring 32 acts between an outwardly bent flange 33 on each hoof 31 near the bolt head 30 and the shoulder 29 to to pull the pressure ring 27 against the body 19 and bring it into engagement with the above-mentioned piston 25.

A sealing ring 34, which also acts as a thrust bearing,

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is attached to the abutment 15 opposite the pressure ring 27, which rests on the seal. The corresponding thick ring 35, which acts as a counteracting thrust bearing, is attached to the outside of the body 19 in the vicinity of the flange ; and lies against the flange. Air pressure in the recess 2h pushes the iloluen 25 outwards out of the recess, in front of you, the i.ruci: ring 27 is pressed off your body 19 to seal between the sealing ring 34 and ö.em JJrucKi-ing 27 and between the ¹ ^ ientring 35 and dera i'ic.nsch 1o. The space between the king 10 and the riabe 12 is then effectively sealed. When the air pressure decreases, the springs 32 act in such a way, that they pull the pressure ring 27 against the body iy and release the seal.Uli each lug 29 is an adjustable socket screw 36 (see Fig. 1) and extends from the lug on the side near the pressure ring to the Movement of the pressure ring in dir ung to limit the ring body 19. The foadenschrauben be set such that, when the air pressure is released, are moved away by a small, but finite way of the seals, the surfaces of the elements associated with ete * ¹ the seals in engagement, a frictional wear and heat generation on the ii-b sealing surfaces.

The seals enclose a space, which is indicated with 37 between the i-Jabe 12 and the ring 10. Mn Channel 3-3 extends through the rotatable hub 12 to the

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• 3.

Interspace 37, and a double channel 39 extends aux'ch the stationary pressure ring 27 to your interim 37. Jer channel 33 is with the pneumatically operated .- .. echanissus connected for engagement of the · coupling, and the channel is connected to a source of air pressure to provide a ..Aift-iiruc.: - generate pulse to bring the clutch into engagement.

In order to prevent lubricant, which has been supplied to the bearing 21 via a lubricating nipple 21ε (I ¹ Ig. 1), from being pressed out of the bearing 21 through the intermediate space 37, there are axial channels 40 (of which only one - is shown) formed in the ring body 19 parallel to the bearing.

The main ring body 19 is provided with a further outwardly extending projection 41 (Fig. 1) on which a Retaining link 42 is attached to prevent the outer ring from rotating with the hub.

The connection described above allows a connection between a stationary source of the pressure medium and a rotating mechanism to which the pressure medium is supplied will. As the seals between the stationary and rotating elements of the joint are released if no air pressure is transmitted, the wear and tear

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BATHROOM ORiGINAL,

tongues of the seals decreased, ^ ine '., can hurry through the i; abe 12 extend, and so it is possible to make the connection at any suitable place in the area of the shaft, both at one or the other end of the shaft. The force acting on the sealing surfaces can be adjusted by changing the air pressure acting on the piston regardless of the pressure passed through the connection, so that the best balance between a üiHiic-itigkfcit unü. the iceiüungsdrehmonient due to the seals can be obtained. When the seals are released, the friction torque of the connection is very small.

No additional thrust bearings are required to counteract the sealing force, and there is no resulting axial pressure on the shaft or clutch mechanism to which the device is attached. In addition, the two sealing rings between the rotating and the non-rotating elements are physically identical and resist the same .Druckdifferential; in addition, the force acting on the smile surfaces is also the same. Therefore, the optimum balance between the leak and deiii rieibungscLrehcioment on both ¹ → i is the entringen gleicne so that excessive heat generation is prevented in a Dichtriii £, which is in communication with a large leakage to the other.

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3 and 4 show another embodiment of the rotary connection of FIGS. 1 and 2, the rotary piston 25 and the Pting recess 24 being omitted. The body 43 of the stationary outer part consists of a cylindrical main centering part 44, an axially projecting step 45 and a cylindrical centering part 46 with a reduced diameter. ^ in pressure ring 47 has a hole 4o, in aer aas centering part 46 sits, and a counterbore k-3 , in which the main centering part 44 sits, the bottom 50 of the counterbore 49 of the step 45 being opposite.

The pressure ring 47 has a radial channel ~ yj , which is connected to an intermediate space 37, as in the embodiment described above, the ¹ channel ~ y ·} being a branch

51, which communicates with the bottom 50 of the counter bore 49 stands.

The main centering part 44 of the body 43 has an annular groove 52 formed in its outer surface. The ring groove

52 is adapted to a sealing ring 53 which forms a seal between the outer surface of the main centering part 44 and the surface the counter bore A9 forms. Similarly, one is Annular groove 54 is formed in the surface of the bore 48 in which a sealing ring 55 is seated, which forms a seal between the outer surface -The centering part 46 with a reduced diameter and the area of the bore 44 forms. The sealing rings 53 and 55 thus form seals on each side of step 45.

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Λ'βηη air is supplied to the channel 39 under Upressure, so if the body 43 and the uruc & ring 47 are pressed apart, namely by the air pressure which is fed through the junction 51 to the bottom 30, the bore: 4 ^ and the step 45 and acts on this to appropriate seals between the sealing ring 34 and the pressure ring 47 and between your sealing ring 35 and the flange 1ö to train.

Like the previous embodiment, there are springs 32 is provided to pull the pressure ring 47 towards the body 43 and thereby release the seal when the air pressure in the channel 39 is interrupted. In this embodiment, however, sleeves 31 are arranged on the bolts 30 in such a way that that their outwardly turned flanges are the retaining nuts 50a and not the bolt heads adjacent so that the Spring 32 between the flanges on the sleeves and the corresponding ones Lugs on the pressure ring 47 acts instead of the lugs on the body as in the previous embodiment.

Figs. 5, 6 and 7 show another embodiment the rotary joint of FIGS. 3 and 4.

The body 43 is provided with three lugs 29 which are arranged at a distance on the circumference and which have corresponding lugs 26 are connected on the pressure ring 47 by bolts 50 in such a way that, as in the previous embodiment,

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the pressure ring and body are relatively movable in an axial direction to bring the uient rings 34 and 35 into engagement, in this embodiment each bolt 30 extends through a counterbore 55 in the corresponding lug 29 .Bore 57 is arranged to slide in the corresponding extension 2o and which has an axial bore 5ä with a thread, is located on the threaded part of the bolt 30. The extension 28 is provided with a recess 59 which interrupts the bore 57 so that the pin 5ö extends through the recess 59. A sleeve 31, which is surrounded by a helical spring 32, surrounds the part of the pin 50 within the recess. The fiber 32 is arranged in such a way that it acts between the outwardly turned flange on one sleeve and the other of the recess 59 in order to retract the expanded outer ring, i.e. to prevent the pressure ring 47 and the body 43 from engaging to bring the service rings 54 and 35, respectively, when the pressure of the fluid in the channel 51 is reduced as above. In order to ensure that any wear of the sealing rings 34, 35 does not affect the ¥ eg on which the outer ring is withdrawn, the flanged end of the sleeve 31 rests on a pair of spring washers 61 which place the pin 56 between them. Surrounding the end of the sleeve 31 and the other end wall 52 of the recess 59 and which can only be moved in one direction along the pin. The presence of the spring washers 61 ensures that the return path remains constant and prevents over-

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Kisses A ^ ialspiel in the stationursn feil dei 'connection ;.

In this case, the channel 51, which leads to the space between the opposite surfaces 45 and 50 of the body 43 and the pressure ring 47 leads, and the lianal 39 to the space 37 not within the pressure ring connected, as in the one shown in ο en Fig. 5 and A. Export / jsioria. In contrast, the channel 51 is sealed with a Air supply line 63 '(Fig * 5 and 7) connected, which is arranged on the ümiarxg at a distance from the channel 59 is. however, the clutch actuating fluid is also air, it is possible to connect the channels o3 and 59 to a common compressed air source.

. Connection is to an optional main fluid inlet 39a, an optional sealant inlet 63a and an optional grease nipple 21b, which are normally closed by means of a cover according to FIG. 5, but which Can be used when the usual inlets and the grease nipple due to the arrangement of the rotary joint are unreachable. Similarly, the retaining connection 42, which is connected to the extension 41 on the body 43, rotatably mounted by means of a bearing 64 such that it is either that shown by solid lines in FIG Position or the position shown by the main lines, ^ e according to which position is more suitable. The arrangement of the retaining connection 46 on the right-hand side

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BATH ORIGINAL

the connection according to FIG. 5 is only suitable if the honeycomb. 12, which are arranged at any point on the shaft
can, rotates clockwise. If the rotation is in the counterclockwise direction, the holding connection 42 is connected to a second projection 41a, which is provided on the side of the rotary joint opposite the projection 41.

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Claims (1)

_% 26U8793 L. patent claims 1. ; ivrehverbiüaung for connecting stationary and clreh & iidoi lines for a otrömungsmedium, ge ic e η η ζ calibrated η et by concentric, relatively zueincuCei c.i'clibere inner and outer parts (12 or Id) with einoiii zv. ^r isehen these arranged Z-VD-sch & iiraum (57) o the Aufnciirne. & s οcrömungsmeüiums, releasable seals (34,35) between aen parts (12,18) to the leakage to prevent the medium, & uf the pressure of the otrömungsmediums responsive i : .inx'icxii; Ungen for actuating the seals (34,35) and by ivand.lt · (3NC, 39) extending from the Lwischenraum (37) through the parts \ Λ7. ozvr. 1d) to the stationary and to the three-ionc-.c. ^ Le.i rounds extend. 2. jjrehverDinduiig according to claim 1, characterized in that a bearing (21) is provided for the relative rotary movement between the inner and outer parts (12 and / or. Id). 3. Rotary connection according to claim 1 or 2, characterized ge - : <. indicates that the inner part (12) can be rotated relative to the in ii.u.oentfcil (iü). 4. Drehverbiriü ^ ig according to claim 3, marked η e t by a holding connection (42) for the stationary - 1b 609838/0675 . ^ 261) 8793 AUj j ent part (i.jj and by a ^ eresti ^ UXitseinrichcung ^ 1> »1 ^£ 0 for connecting the inner part (12) with a relatively zim outer part (18) rotatable body (1ü). 3.. Rotary connection after, one egg> jisprUche 2 to <-'-, thereby <. a ± z e η η ζ calibrates, since 3 the iiiiieiiXfcii (12) on its circumference eiiic-naer ge ^ enüDerliei.: ende, in: i-vjst-.ai.i arranged, ringi ^ ru, - ^ «iuei '1 -... ^ erflcicheri Ct>, 1o) auiveisc,
wooei the exercise part i '\ J) clas .m.vici.rceil (12) ZKiscJien den ej. lcigerflächen (1 ^ ·, Ic; zur ^ nsbiluiuit ;, ^r es iv ^r if; cnevir; - .. ujv »s
un ^ ;, ibt and the uioiriu ^ .on (^ Η, ϋ ··) zri3ciien άοϊ. , vio.erla- ilÄcheii (ii?, 1o) and the outer part (15) ari £ -.aoranex sina. ü. jjreriverbiiiciun / ;: nc.cu .ms ^ rucn ^, ds.äurcii g e i: e η η - draw ^w r that a & s ^ ußfcxiceii (lo) to ^ in ^ rxx'i 'inic d & ^ jjiclrcun ^ en (34, j? iO zv / ischeii aen linden des AUoentsils (13; u -. ^ a aen viaerlagerf lachen ( 15.1 °) s-2-i ^ l expandable ibt. 7. iJreiiverbverbindung iiacn claim o, among other things g e κ e η η - draw that the outer part (lo) expands
a Kinriclrcunti which can be determined by Lruc; :: aittei is provided. d. iirehverbindun £: after imsoruch Ό or 7, thereby - Ii e η η ζ e i c h η e t that aas Aui3exiGeil (lo) two coaxial King elements (io, 11; 43.4 / j, one of which in his dem other ring element adjacent areas have an annular recess (24) has, within which an axially movable - 17 609838/0675 BATH ORIGINAL ^ ^ iix.j ülbei- (i ^; v: i _'c esei.en iac, and in an aera ^ in ^ elenei-t {ι * -) e.Liie-1 ue ^ ^ ugsj = ru.. "^ (24] traveling Durcnl &i;. to the addition of standing under x / ruc.c, jtrüinuA _c ; si; todiu.u behind the xvoiuen (23) auiVeis'c, whereby this is so an ^ eordno-t, äarj er · a; -: icl in the ^ ussparun _ö (24) to the other »ningele-viant (11) bov; e ■: -fr is'c, in order to get the two i: 1ö) to be separated from one another. yy. Rotary connection according to ^ ns ^ ruch 7 or · es, thereby g e λ c η υ draws 11 e t that the space (37) between the inner and outer parts (12 or 16) and the recess (24) for the KoIoen (25) with a common pressure medium source verbund leu are. 10. Rotary joint according to claim 7, characterized in that the de; ε outer part is two coaxial, one inside the other narrow, mutually axially movable ring elements (43,47) » a pressure criiictel feed device (39) for the intermediate space between the finger elements (43,47) in order to separate them from one another and to load the seals (34,35) in order to expel to prevent pressure medium or the otrömungsrüediums. 11. Rotary connection according to claim 10, characterized in that the intermediate space (37) between the inner and outer parts (12 and 43, 47) and the pressure medium supply device (39) are connected to a common Druckmittelauelle. - 16 609 8 38/0675 BATH ORIGINAL 26U8793 «9 - 12. Rotary connection according to one of claims ώ to 11, l ~ e λ e η η ζ ο ± ch η e ~ c dar cn one i / 'eder {y ^ j zuu ... uraclcbewe ^ en of the expanded ^ uLen ceils through /_us&.i:mienzug the two ^ in _a 'elements (11, Iu; 43,4 ?; zu ... i rrea- ^ just of the seals (jj4,5i?). connection still .-. nsorucL 12, uodurch · _ ■: e it e η ϊι ζ eich η et, ό.ΐ. · ί die h'eaer {'^ 2.) a device · for automatic compensation of overuse of the seals (34, `` j i>) auiVeist. 14. Rotary connection according to one of the ^ ns-years 2 to 13 with a coupling device, ζ eke η η ζ eich η et by a dirch pressure medium actuatable ui'eh ^ coupling part (1Ü), which is connected to the Iimenteii (12) for geiaeinameu coaxial rotary movement. - 19 - 608838/0675 BATH ORIGINAL Blank page