EP4437252A1 - Kit d'étanchéité d'arbre et ensemble arbre - Google Patents

Kit d'étanchéité d'arbre et ensemble arbre

Info

Publication number
EP4437252A1
EP4437252A1 EP23704094.4A EP23704094A EP4437252A1 EP 4437252 A1 EP4437252 A1 EP 4437252A1 EP 23704094 A EP23704094 A EP 23704094A EP 4437252 A1 EP4437252 A1 EP 4437252A1
Authority
EP
European Patent Office
Prior art keywords
shaft
ring
sealing
foam
kneading
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
EP23704094.4A
Other languages
German (de)
English (en)
Inventor
Tobias Corneli
Holger Jordan
Mandy WILKE
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.)
Trelleborg Sealing Solutions Germany GmbH
Original Assignee
Trelleborg Sealing Solutions Germany GmbH
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 Trelleborg Sealing Solutions Germany GmbH filed Critical Trelleborg Sealing Solutions Germany GmbH
Publication of EP4437252A1 publication Critical patent/EP4437252A1/fr
Pending legal-status Critical Current

Links

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
    • F16J—PISTONS; CYLINDERS; SEALINGS
    • F16J15/00—Sealings
    • F16J15/16—Sealings between relatively-moving surfaces
    • F16J15/32—Sealings between relatively-moving surfaces with elastic sealings, e.g. O-rings
    • F16J15/3284—Sealings between relatively-moving surfaces with elastic sealings, e.g. O-rings characterised by their structure; Selection of materials
    • 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
    • F16J—PISTONS; CYLINDERS; SEALINGS
    • F16J15/00—Sealings
    • F16J15/16—Sealings between relatively-moving surfaces
    • F16J15/18—Sealings between relatively-moving surfaces with stuffing-boxes for elastic or plastic packings
    • F16J15/20—Packing materials therefor
    • 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
    • F16J—PISTONS; CYLINDERS; SEALINGS
    • F16J15/00—Sealings
    • F16J15/002—Sealings comprising at least two sealings in succession
    • 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
    • F16J—PISTONS; CYLINDERS; SEALINGS
    • F16J15/00—Sealings
    • F16J15/16—Sealings between relatively-moving surfaces
    • F16J15/162—Special parts or details relating to lubrication or cooling of the sealing itself
    • 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
    • F16J—PISTONS; CYLINDERS; SEALINGS
    • F16J15/00—Sealings
    • F16J15/16—Sealings between relatively-moving surfaces
    • F16J15/32—Sealings between relatively-moving surfaces with elastic sealings, e.g. O-rings
    • F16J15/3204—Sealings between relatively-moving surfaces with elastic sealings, e.g. O-rings with at least one lip
    • F16J15/3228—Sealings between relatively-moving surfaces with elastic sealings, e.g. O-rings with at least one lip formed by deforming a flat ring
    • 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
    • F16J—PISTONS; CYLINDERS; SEALINGS
    • F16J15/00—Sealings
    • F16J15/16—Sealings between relatively-moving surfaces
    • F16J15/32—Sealings between relatively-moving surfaces with elastic sealings, e.g. O-rings
    • F16J15/324—Arrangements for lubrication or cooling of the sealing itself
    • 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
    • F16J—PISTONS; CYLINDERS; SEALINGS
    • F16J15/00—Sealings
    • F16J15/16—Sealings between relatively-moving surfaces
    • F16J15/32—Sealings between relatively-moving surfaces with elastic sealings, e.g. O-rings
    • F16J15/3248—Sealings between relatively-moving surfaces with elastic sealings, e.g. O-rings provided with casings or supports
    • F16J15/3252—Sealings between relatively-moving surfaces with elastic sealings, e.g. O-rings provided with casings or supports with rigid casings or supports
    • F16J15/3256—Sealings between relatively-moving surfaces with elastic sealings, e.g. O-rings provided with casings or supports with rigid casings or supports comprising two casing or support elements, one attached to each surface, e.g. cartridge or cassette seals
    • 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
    • F16C3/00—Shafts; Axles; Cranks; Eccentrics
    • F16C3/02—Shafts; Axles

Definitions

  • the invention relates to a shaft seal set and a shaft arrangement.
  • shaft arrangements for example in the drive train of construction vehicles, in machine tools, electric hand tools and the like, the penetration of contaminants into the bearing or sealing gap must be reliably avoided in order to avoid malfunctions and to ensure a sufficient service life of the shaft arrangement.
  • stuffing seals, labyrinth seals and multi-stage sealing systems with several sealing rings arranged one behind the other are used.
  • the task relating to the shaft sealing set is solved by a shaft sealing set with the features specified in claim 1.
  • the shaft arrangement according to the invention has the features specified in claim 12.
  • Preferred developments of the invention are specified in the subclaims and in the description.
  • the shaft sealing set according to the invention is provided for a sealing gap formed between a shaft and a machine part encompassing the shaft and has a foam ring made of an elastically deformable foam which can be arranged in the sealing gap to be sealed.
  • the shaft seal set also includes a kneading ring.
  • the kneading ring can be arranged or fastened in a rotationally fixed manner on the shaft or on the machine part encompassing the shaft and comprises a base body from which at least one cam extends.
  • the cam serves to contact and locally compress, ie deform, the foam material of the foam ring.
  • the kneading ring rotates together with the shaft and the at least one cam engages in the foam ring (non-destructively) and progressively compresses it in the direction of rotation, thereby kneading it.
  • the foam material or the foam of the foam ring consists of a plastic and is suitable for holding back liquid and particulate contaminants that accumulate on the outside from further penetration into the sealing gap, and therefore for absorbing any contaminants that have already penetrated into the sealing gap as well as lubricant present in the sealing gap.
  • the foam ring can therefore serve as a sealing element, as a filter and as a lubricant reservoir.
  • the kneading ring particularly preferably has several cams.
  • the cams are advantageously arranged at a distance from one another in the circumferential direction, preferably regularly. This means that kneading or compression and the subsequent relaxation of the foam ring can be carried out at a higher frequency and more effectively.
  • the at least one cam of the kneading ring can be designed as a radial cam or as an axial cam.
  • a radial cam it extends away from the base body of the kneading ring in a direction radial to the central axis of the kneading ring.
  • an axial cam this extends in a corresponding manner in an axial direction away from the base body of the kneading ring.
  • the foam ring can be compressed in a radial direction by a radial cam and in an axial direction by an axial cam.
  • the kneading ring can have several of the cams explained above. At least some of the cams can be designed as radial cams and/or as axial cams. If the kneading ring has both axial and radial cams, particularly effective compression, i.e. H. a particularly efficient compression or kneading of the foam ring can be achieved. In this way, lubricant adsorbed or absorbed in the foam ring can be pressed out of the foam ring particularly effectively.
  • At least some of the cams of the kneading ring can match in geometry and/or size.
  • the kneading ring can have two groups of cams that differ from each other in size and/or geometry. This allows the suction and release behavior of the foam ring with regard to fluids and particulate contaminants to be specifically influenced.
  • the foam ring in the assembled state of the shaft sealing set through each cam of the kneading ring by at least 10%, preferably at least 15%, of its radial or axial extent compressible. This results in a particularly effective suction and delivery behavior of the foam ring.
  • each individual cam is preferably rounded in order to avoid unwanted mechanical damage to the foam ring or unwanted rotation of the foam ring during operation.
  • the kneading ring has at least one support flange (to support the foam ring in the axial direction) for the foam ring, which extends away from the base body of the kneading ring in a radial direction.
  • the support flange is advantageously shaped onto the kneading ring from a manufacturing point of view.
  • the kneading ring can be designed as an injection molded part that can be manufactured inexpensively.
  • the kneading ring has two support flanges, between which the foam ring can be arranged.
  • the kneading ring thus forms an annular groove for the foam ring, through which the foam ring can be fixed in position in an axial direction relative to the kneading ring.
  • the foam ring can be supported on one of the side flanges of the kneading ring. This side flange serves as an axial abutment for the foam ring.
  • the kneading ring can consist of metal, a plastic or a composite material. It is understood that the material of the kneading ring preferably has a greater modulus of elasticity than the foam material of the foam ring.
  • the kneading ring can in particular consist of a viscoelastically deformable plastic.
  • a viscoelastically deformable plastic For example, polyamines (e.g. PA6), acrylonitrile-butadiene-styrene copolymers, polycarbonates (PC), etc. come into consideration here.
  • the shaft arrangement comprises: a first machine part in the form of a shaft and a second machine part encompassing the shaft, the two machine parts being arranged at a distance from one another to form a sealing gap and being arranged to be rotatable relative to one another about an axis of rotation; and at least one shaft seal set explained above, wherein the foam ring is arranged in the sealing gap and the kneading ring is arranged in a rotationally fixed manner on the shaft or on the second machine part, such that the foam ring is progressively compressed in the direction of rotation by the cams of the kneading ring during a relative movement of the two machine parts.
  • the interaction of the kneading ring with the foam ring is used for a circumferential kneading of the foam ring.
  • the foam ring can release absorbed lubricant as well as contaminants such as fluids and particles and then locally absorb or absorb them again after the load has been relieved of its respective local compression area. Contaminants that are adsorbed or mechanically entangled on the foam ring can be washed away from the foam ring if the shaft speed is sufficiently high.
  • the foam ring can be arranged in a rotationally fixed manner, in particular clamped, on the respective other machine part to which the kneading ring is not attached.
  • the surface of the kneading ring contacts the foam ring between its individual cams without compressing it or is arranged at a distance from it. This gives the foam ring the opportunity to expand after compression by a cam of the kneading ring due to the inherent elasticity To develop the resilience again or to deform it back into its original shape.
  • the shaft arrangement preferably comprises a sealing ring with a dynamic sealing section or a sealing edge, which rests dynamically around the shaft in a dynamic sealing manner.
  • the shaft seal set can be arranged offset with respect to this sealing ring in an axial direction towards the dirt or outside of the sealing gap.
  • the foam ring can serve as a first protective barrier, so to speak, against contaminants penetrating into the sealing gap.
  • the shaft sealing set is arranged offset with respect to the sealing ring in an axial direction towards the inside or clean side of the sealing gap.
  • the foam ring can serve as a lubricant reservoir and as a dirt barrier for contaminants that accumulate in the sealing gap (abrasion, oil carbon, etc.) or that have overcome the seal.
  • the shaft arrangement has a plurality of sealing rings which are arranged spaced apart from one another in an axial direction, with a shaft sealing set being arranged between at least two or all of the sealing rings lying next to one another in pairs.
  • Each foam ring of a shaft seal set can rest positively with its two side flanks on one of the sealing rings, in particular over its entire radial extent.
  • the foam ring can therefore have a (certain) supporting function for the sealing rings.
  • each foam ring can be fixed in its predetermined axial position relative to the shaft in a simple structural manner. If the foam ring is held under an axial prestress (pre-compression) between two of the sealing rings (clamped), this can also reliably counteract undesirable rotation of the foam ring with the shaft.
  • each foam ring can be supported on the outer circumference in a radial direction directly or indirectly on the second machine part or on a mounting sleeve.
  • each sealing ring and the foam ring of each shaft seal set can be arranged together in a machine part designed as a mounting sleeve.
  • the mounting sleeve can be mounted on another housing part or the like.
  • Such mounting sleeves can be made of different materials, such as metal, a tough or even rubber-elastic deformable plastic, as well as a composite material. With such a mounting sleeve, the storage and assembly of the individual components can be significantly simplified. This is advantageous for manufacturing costs.
  • Fig. 1 shows a first shaft arrangement with a shaft, a machine part encompassing the shaft at a distance, a first and a second sealing ring and a shaft sealing set arranged between the two sealing rings with a foam ring arranged in the sealing gap and with a kneading ring arranged in a rotationally fixed manner on the shaft, which is connected to the Foam ring works together, in a partial sectional view;
  • FIG. 3 shows a second shaft arrangement, which differs from the shaft arrangement shown in FIG. 1 essentially by sealing rings with different sealing directions; 4 shows a third shaft arrangement with three sealing rings, which are arranged one behind the other in the axial direction, with a shaft sealing set being arranged between two of the sealing rings;
  • FIG. 5 shows a fourth shaft arrangement with four sealing rings acting in the same direction, which are arranged one behind the other in the axial direction, with a shaft sealing set being arranged between two of the sealing rings;
  • FIG. 6 shows a shaft arrangement with a conventional sealing ring with a wiper lip, the sealing lip of which is spring-loaded and dynamically seals all around the shaft, and with a shaft sealing set arranged upstream of the sealing ring in the axial direction towards the outside;
  • FIG. 7 shows a kneading ring with a plurality of radial cams, which are arranged spaced apart from one another in the circumferential direction of the kneading ring, and with two side flanges in a perspective view;
  • FIG. 8 shows the kneading ring according to FIG. 7 in a side view
  • FIG. 10 shows the kneading ring according to FIG. 9, in a sectional view
  • Fig. 11 shows a kneading ring with radial cams and with a side flange extending in the radial direction beyond the radial cams.
  • Fig. 1 shows a shaft arrangement 10 comprising a shaft 12, a machine part 14 encompassing the shaft 12, for example in the form of a shaft housing or a mounting sleeve.
  • the shaft 12 is arranged at a distance from the machine part 14 to form a bearing or sealing gap 16 and is rotatably mounted about an axis of rotation designated L.
  • the machine part 14 has a retaining groove 18.
  • One or more sealing rings 20 are used to seal an inside H of the sealing gap 16 from an outside N of the sealing gap 16.
  • the term sealing ring also includes so-called wiper rings.
  • the sealing rings 20 are each held in the holding groove 18 of the machine part 14 with their mounting or foot sections 22.
  • the sealing rings 20 each have a sealing lip 24 formed on the holding section with a sealing edge 26, which rests on the shaft 12 in a dynamic sealing manner over the entire circumference.
  • the sealing edges 24 here have matching effective or sealing directions S t , S 2 (towards the outside).
  • the sealing rings 20 are kept at a distance by a clamping element 28 arranged between the foot sections 22.
  • the clamping element 28 is arranged in the axial direction between the foot sections 22 of the two sealing rings 20.
  • the clamping element 28 is preferably designed to be closed in a ring shape and preferably comprises a material with a greater modulus of elasticity than the material of the sealing rings 20.
  • a shaft seal set designated overall by 30 is arranged between the sealing lips 24 of the sealing rings 20.
  • the shaft seal set 30 is limited in a radial direction by the clamping element 28 and the shaft.
  • the shaft sealing set 30 comprises a kneading ring 32 and a foam ring 34.
  • the kneading ring 32 is arranged on the shaft 12 in a rotationally fixed and axially fixed position.
  • the kneading ring 32 can be attached to the shaft in particular in a clamp fit or by an adhesive connection.
  • the foam ring 34 is arranged between the two sealing rings 20, here its sealing lips 24, and additionally between the two foot sections 22. The foam ring 34 can rest on both sides of the sealing rings 20 almost over its entire radial extent.
  • the foam ring also lies in a radial direction on the outside via the clamping element 28 on the machine part 14 and is supported on it.
  • the foam ring 34 rests on the inside of the kneading ring 32 in the radial direction.
  • the kneading ring 32 comprises a base body 36, on which projections or radial cams 38a are arranged, in particular molded on.
  • the radial cams 38a each extend away from the base body 36 in a direction radial to the central axis Z of the kneading ring 32.
  • the radial cams 38a are rounded and identical in construction, but can also differ from one another in their size and geometry. It should be noted that the central axis of the kneading ring 32 and the axis of rotation L of the shaft arrangement coincide when the kneading ring is assembled.
  • the kneading ring 32 can consist of metal, a plastic, preferably viscoelastically deformable, or a composite material.
  • the kneading ring 32 can also be designed in several parts, in particular in two parts, according to an embodiment not shown in the drawing in order to further simplify its assembly on the shaft 12.
  • the kneading ring 32 can, for example, comprise two half-shells (not shown in the drawing), which can be locked together by locking means.
  • the shaft seal kit can generally also be retrofitted to existing shafts.
  • the radial cams 38a of the kneading ring 32 engage in the foam material of the foam ring 34 in a displacing manner.
  • the foam ring 34 can be compressed locally by at least 10% of its relevant here - radial - extension di by each radial cam 38a of the kneading ring 32. If the shaft 12 rotates about the axis of rotation L, the kneading ring 32 rotates together with the shaft 12 about the axis of rotation L.
  • the radial cams 38a of the kneading ring 32 are thereby deformed by the foam ring 34 in the respective direction of rotation of the shaft 12 through the foam material of the foam ring 34 moves.
  • the foam ring 34 is therefore kneaded. If the foam ring 34 is impregnated with a lubricant typically arranged in the sealing gap, the lubricant can be partially displaced from the foam ring 34, ie squeezed out. If the respective radial cam 38a moves further, the foam ring 34 can be locally at the previous position of the respective radial cam 38a in the foam ring 34 relax again, ie deform back into its original shape due to its inherent elastic resilience.
  • the shaft arrangement 10 can have a blow-out or outlet channel 40, via which the foam ring 34 and the outside H are fluidly connected to one another.
  • the outlet channel 40 can extend from the outside H through the machine part 14, the first sealing ring 20 closest to the outside, to the base of the foam ring 34.
  • Lubricants and particulate contaminants can be discharged from the foam ring 34 to the outside H via the outlet channel 40. This corresponds to a self-cleaning of the bearing or sealing gap 16.
  • the blow-out channel can be provided with a unidirectional valve 41. The valve can prevent unwanted penetration of contaminants via the outlet channel 40 into the sealing gap 16.
  • the machine part 14 can also be formed by a mounting sleeve.
  • the mounting sleeve can consist of a tough or rubber-elastic deformable material that is familiar to those skilled in the art.
  • Fig. 3 shows a further shaft arrangement 10, which essentially differs from that shown in Fig. 1 in that the two sealing rings 20 have opposite sealing directions Si, S 2 .
  • the shaft arrangement can be shown in FIGS. 4 and 5 also three or more sealing rings 20 with matching or z. T. have opposite effective or sealing directions Si, S 2 , S 3 (Fig. 4). It should be noted that a shaft seal set 30 can be arranged between two of the sealing rings 20. The foam ring 34 of each shaft seal set 30 can rest in the axial direction on both sides of the sealing rings 20 assigned to the respective foam ring 34.
  • Fig. 6 shows a shaft arrangement 10, in which the shaft seal set 30 is relative to the sealing ring 20 or the sealing rings 20 of the shaft arrangement 10, for example is arranged offset in the axial direction towards the outside N.
  • the shaft sealing set 30 is therefore connected upstream of the sealing ring 20 on the outside.
  • the shaft sealing set 30 can have at least one or, as shown in FIG. 6, two foam rings 34, which are arranged spaced apart from one another in the axial direction.
  • a holding or spacer ring 42 can be arranged between the foam rings 34 and between the side flange 44b and the adjacent foam ring 34.
  • the kneading ring 32 for the foam ring(s) 34 has a first support flange 44a on the outside and a second support flange 44b on the inside.
  • each support flange 44 extends away from the base body 36 of the kneading ring 32 in a radial direction outwards.
  • the outside support flange 44a can project beyond the inner second support flange 44b in the radial direction.
  • the shaft sealing set 30 is arranged together with the sealing ring 20 in the retaining groove 18 of the machine part 14 (or the mounting sleeve).
  • the retaining groove 18 is delimited on the outside by a groove flank 18a.
  • a (narrow) fluid channel 46 is arranged between the groove flank 18a and the kneading ring 32, which is open to the outside N and forms a type of labyrinth seal with the foam rings 34 of the shaft sealing set 30.
  • the sealing ring 20 can have any common shape and, as shown in FIG. It goes without saying that the sealing ring 20 can have a reinforcing insert, etc.
  • Figs. 9 and 10 show another kneading ring 32 in an isolated view.
  • the kneading ring 32 has both radial cams 38a and axial cams 38b and can be used, for example, in the shaft arrangement shown in FIG. 6.
  • Axial and/or radial cams 38a, 38b can each be arranged at a regular or irregular distance from one another in the circumferential direction.
  • the radial cams 38a and the axial cams 38b can also match or differ from one another in their size or geometry.
  • the radial Cams 38a can be arranged at least partially in a gap with the axial cams 38b and/or aligned with them in the axial direction.
  • the radial cams 38a are suitable for compressing the foam rings 34 shown in FIG. 6 in the radial direction of their extension di by at least 10%.
  • the axial cams are suitable in a corresponding manner for locally compressing the foam ring on the left in FIG. 6 by 10% of its axial extent d 2 .
  • Fig. 11 shows a further kneading ring 32, which essentially differs from the embodiment of the kneading ring 32 shown in Fig. 7 in that the kneading ring 32 only has one support flange 44a, 44b.
  • the invention relates to a shaft sealing set (30) for a sealing gap formed between a shaft (12) and a machine part (14) encompassing the shaft (12), comprising a foam ring (34) made of an elastically deformable foam material, which is in the sealing gap (16). can be arranged.
  • the shaft sealing set further comprises a kneading ring (32) which can be arranged in a rotationally fixed manner on the shaft (12) and has a base body (36) from which at least one cam (38a, 38b) extends, which serves to locally compress the foam material of the foam ring when the shaft sealing set is in the assembled state
  • the invention also relates to a shaft arrangement with such a shaft sealing set (30) or with several such shaft sealing sets (30).

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  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Sealing Devices (AREA)

Abstract

L'invention concerne un kit d'étanchéité d'arbre (30) pour un espace d'étanchéité formé entre un arbre (12) et une partie de machine (14) venant en prise autour de l'arbre (12), comprenant une bague en mousse (34) constituée d'un matériau en mousse élastiquement déformable, qui peut être disposée dans l'espace d'étanchéité (16). Le kit d'étanchéité d'arbre comprend également une bague d'étanchéité annulaire (32) qui peut être disposée sur l'arbre (12) de manière fixe en rotation, présentant un corps principal (36) à l'opposé duquel s'étend au moins un lobe (38a, 38b), qui fonctionne pour comprimer localement le matériau en mousse de la bague en mousse dans l'état assemblé du kit d'étanchéité d'arbre. L'invention concerne également un ensemble arbre comprenant un kit d'étanchéité d'arbre (30) de ce type ou comprenant de multiples kits d'étanchéité d'arbre (30) de ce type.
EP23704094.4A 2022-03-21 2023-02-07 Kit d'étanchéité d'arbre et ensemble arbre Pending EP4437252A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102022106567.7A DE102022106567A1 (de) 2022-03-21 2022-03-21 Wellendichtsatz und Wellenanordnung
PCT/EP2023/052922 WO2023179955A1 (fr) 2022-03-21 2023-02-07 Kit d'étanchéité d'arbre et ensemble arbre

Publications (1)

Publication Number Publication Date
EP4437252A1 true EP4437252A1 (fr) 2024-10-02

Family

ID=85202033

Family Applications (1)

Application Number Title Priority Date Filing Date
EP23704094.4A Pending EP4437252A1 (fr) 2022-03-21 2023-02-07 Kit d'étanchéité d'arbre et ensemble arbre

Country Status (5)

Country Link
US (1) US20250012361A1 (fr)
EP (1) EP4437252A1 (fr)
CN (1) CN118871699A (fr)
DE (1) DE102022106567A1 (fr)
WO (1) WO2023179955A1 (fr)

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB1107995A (en) * 1964-07-31 1968-03-27 Angus George Co Ltd Improvements in and relating to machine shaft seals and bearings with such seals

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3377074A (en) 1965-10-11 1968-04-09 Cundy Graeme Maxwell Seals for machine shafts
US4427201A (en) * 1982-08-30 1984-01-24 Allis-Chalmers Corporation Double seal having vibration damping and lubricating means
US6257587B1 (en) * 1999-05-21 2001-07-10 Federal-Mogul World Wide, Inc. Radial lip seal having protected porous dust excluder
GB2369412A (en) * 2000-11-28 2002-05-29 Federal Mogul Technology Ltd Sealing member of absorbent material
JP2017026072A (ja) * 2015-07-24 2017-02-02 Nok株式会社 密封装置
DE102021206769B4 (de) * 2021-06-29 2025-05-22 Trelleborg Sealing Solutions Germany Gmbh Rotationsdichtungsanordnung mit Rotationsdichtung und mit ölseitig angeordnetem Schaumring

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB1107995A (en) * 1964-07-31 1968-03-27 Angus George Co Ltd Improvements in and relating to machine shaft seals and bearings with such seals

Also Published As

Publication number Publication date
WO2023179955A1 (fr) 2023-09-28
US20250012361A1 (en) 2025-01-09
DE102022106567A1 (de) 2023-09-21
CN118871699A (zh) 2024-10-29

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