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
  • F16C—SHAFTS; FLEXIBLE SHAFTS; ELEMENTS OR CRANKSHAFT MECHANISMS; ROTARY BODIES OTHER THAN GEARING ELEMENTS; BEARINGS
  • F16C33/00—Parts of bearings; Special methods for making bearings or parts thereof
  • F16C33/72—Sealings
  • F16C33/76—Sealings of ball or roller bearings
  • F16C33/80—Labyrinth sealings
  • F16C33/805—Labyrinth sealings in addition to other sealings, e.g. dirt guards to protect sealings with sealing lips
• • 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
  • F16C19/00—Bearings with rolling contact, for exclusively rotary movement
  • F16C19/22—Bearings with rolling contact, for exclusively rotary movement with bearing rollers essentially of the same size in one or more circular rows, e.g. needle bearings
  • F16C19/34—Bearings with rolling contact, for exclusively rotary movement with bearing rollers essentially of the same size in one or more circular rows, e.g. needle bearings for both radial and axial load
  • F16C19/38—Bearings with rolling contact, for exclusively rotary movement with bearing rollers essentially of the same size in one or more circular rows, e.g. needle bearings for both radial and axial load with two or more rows of rollers
  • F16C19/383—Bearings with rolling contact, for exclusively rotary movement with bearing rollers essentially of the same size in one or more circular rows, e.g. needle bearings for both radial and axial load with two or more rows of rollers with tapered rollers, i.e. rollers having essentially the shape of a truncated cone
  • F16C19/385—Bearings with rolling contact, for exclusively rotary movement with bearing rollers essentially of the same size in one or more circular rows, e.g. needle bearings for both radial and axial load with two or more rows of rollers with tapered rollers, i.e. rollers having essentially the shape of a truncated cone with two rows, i.e. double-row tapered roller bearings
  • F16C19/386—Bearings with rolling contact, for exclusively rotary movement with bearing rollers essentially of the same size in one or more circular rows, e.g. needle bearings for both radial and axial load with two or more rows of rollers with tapered rollers, i.e. rollers having essentially the shape of a truncated cone with two rows, i.e. double-row tapered roller bearings in O-arrangement
• • 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
  • F16C33/00—Parts of bearings; Special methods for making bearings or parts thereof
  • F16C33/72—Sealings
  • F16C33/76—Sealings of ball or roller bearings
  • F16C33/78—Sealings of ball or roller bearings with a diaphragm, disc, or ring, with or without resilient members
  • F16C33/7803—Sealings of ball or roller bearings with a diaphragm, disc, or ring, with or without resilient members suited for particular types of rolling bearings
  • F16C33/7813—Sealings of ball or roller bearings with a diaphragm, disc, or ring, with or without resilient members suited for particular types of rolling bearings for tapered roller bearings
• • 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
  • F16C33/00—Parts of bearings; Special methods for making bearings or parts thereof
  • F16C33/72—Sealings
  • F16C33/76—Sealings of ball or roller bearings
  • F16C33/78—Sealings of ball or roller bearings with a diaphragm, disc, or ring, with or without resilient members
  • F16C33/7886—Sealings of ball or roller bearings with a diaphragm, disc, or ring, with or without resilient members mounted outside the gap between the inner and outer races, e.g. sealing rings mounted to an end face or outer surface of a race
• • 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
  • F16C33/00—Parts of bearings; Special methods for making bearings or parts thereof
  • F16C33/72—Sealings
  • F16C33/76—Sealings of ball or roller bearings
  • F16C33/78—Sealings of ball or roller bearings with a diaphragm, disc, or ring, with or without resilient members
  • F16C33/7889—Sealings of ball or roller bearings with a diaphragm, disc, or ring, with or without resilient members mounted to an inner race and extending toward the outer race
• • 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
  • F16C2300/00—Application independent of particular apparatuses
  • F16C2300/10—Application independent of particular apparatuses related to size
  • F16C2300/14—Large applications, e.g. bearings having an inner diameter exceeding 500 mm

Definitions

• Embodiments relate to rolling bearings and in particular to bearings with a diameter greater than 50 cm.
• a rolling bearing according to an exemplary embodiment with a diameter of more than 50 cm comprises an inner ring, an outer ring, a plurality of rolling elements lying between the inner ring and the outer ring and at least one sealing ring.
• the seal ring is disposed on a surface of the inner ring or the outer ring and, accordingly, the outer ring or the inner ring has a recess.
• the recess is formed and arranged to surround a majority of an exposed surface of the sealing ring without contact, so that between an interior of the rolling bearing for receiving the rolling elements and an outer space of the rolling bearing is formed by the sealing ring and the recess of a labyrinth seal.
• a rolling bearing comprises an inner ring, an outer ring, a plurality of rolling elements lying between the inner ring and the outer ring and at least one sealing ring.
• the sealing ring is disposed on a surface of the inner ring or the outer ring and, accordingly, the outer ring or the inner ring has a recess.
• the recess is formed and arranged to surround a majority of an exposed surface of the sealing ring without contact, so that between a inner ring of the rolling bearing for receiving the rolling elements and an outer space of the rolling bearing through the sealing ring and the recess, a labyrinth seal is formed.
• the sealing ring consists at least partially of a rubber elastomer or a thermoplastic polymer, such as.
• a labyrinth seal can be formed, which is basically a non-contact seal, but in which there can not be too much damage when the sealing ring in operation now and then touches the surface of the recess.
• the described concept In contrast to the use of steel rings as a sealing ring for labyrinth seals, the described concept, the minimum distance between a surface of the recess and the sealing ring can be reduced, so that the sealing effect of the labyrinth seal is increased, and / or it allows the use of a labyrinth seal in rolling bearings large diameters (greater than 50 cm), since steel rings in such large diameters difficult be integrated in the rolling bearing and the movement tolerances are higher in large bearings.
• a labyrinth seal as non-contact seal the maintenance costs can be generally reduced.
• a contact of the sealing ring with the surface of the recess can cause far less damage than a contact of a sealing ring made of steel, so that at this point the maintenance can also be reduced.
• the sealing ring is disposed on a surface of the inner ring and the outer ring has the recess.
• the outer ring comprises a recess-forming component and a lid, which together form the recess.
• the lid is connected to the recess-forming member by releasable connection means.
• the inner ring may have a groove and the sealing ring projecting into the groove bulge. Thereby, the sealing ring can be held in position on the surface of the inner ring, whereby the probability of contact of the surface of the recess can be reduced by the sealing ring.
• the sealing ring has a sealing lip that leads from the remaining sealing ring to a surface of the recess and is in contact with the surface of the recess.
• a cylindrical roller bearing or a tapered roller bearing in particular a double-row or four-row tapered roller bearing, act.
• These rolling bearing types are mostly used for large bearings (diameter larger than 50 cm). According to the concept described, a labyrinth seal can be used in such large bearings, so that the maintenance effort can be significantly reduced.
• Fig. 1 is a sectional view through a part of a rolling bearing.
• Fig. 1 shows a sectional view of a rolling bearing 100 as an embodiment.
• the rolling bearing 100 with a diameter greater than 50 cm comprises an inner ring 110 (IR, inner ring), an outer ring 120 (OR, outer ring), a plurality of between the inner ring 110 and the outer ring 120 rolling elements 130 and at least one sealing ring 140.
• the sealing ring 140 is disposed on a surface of the inner ring 110 or the outer ring 120, and accordingly, the outer ring 120 or the inner ring 110 has a recess.
• the recess is designed and arranged to contactlessly surround a predominant part of an exposed surface of the sealing ring 140, so that a labyrinth seal is formed between an interior of the rolling bearing 100 for receiving the rolling bodies 130 and an outer space of the rolling bearing 100 through the sealing ring 140 and the recess ,
• the maintenance of the rolling bearing can be significantly reduced, since the wear is significantly lower than in contact seals.
• the integration of a labyrinth seal can create a contact free seal can be achieved.
• the maintenance of the rolling bearing can be significantly reduced.
• the cost of maintenance but also material costs for new sealing rings can be reduced by a lower wear.
• the rolling elements 130 are arranged in the interior of the rolling bearing 100. This area of the rolling bearing is to be protected by the labyrinth seal from penetrating dust or water. Conversely, possibly existing lubricants should be prevented from escaping from the interior.
• the outer space of the rolling bearing 100 is the area that no longer belongs to the rolling bearing 100 and can penetrate through the surrounding environment dust or water in the rolling bearing.
• the seal ring 140 is disposed on a surface of the inner ring 110 or the outer ring 120.
• the sealing ring 140 has a non-exposed surface (a surface in contact with the inner ring or the outer ring).
• the remaining part of the surface of the sealing ring 140 may be referred to as an exposed surface.
• This exposed surface of the sealing ring 140 is surrounded for the most part without contact by the recess. That is, a surface of the recess over a majority of the exposed surface of the seal ring 140 is closer to the exposed surface of the seal ring 140 than the interior or exterior of the roller bearing 100. With a majority of the exposed surface, at least 50% (or 70th , 80 or 90%) of the exposed surface of the sealing ring 140.
• the seal ring 140 may be disposed on a cylindrical surface of the inner ring 110 or the outer ring 120 (which is, for example, rotationally symmetric to a rotation axis of the rolling bearing), the cylindrical surface being disposed between the inner space and the outer space of the rolling bearing 100. Accordingly, in this example, the seal ring 140 would be circular in its longitudinal extent (and in its cross-section, for example, substantially rectangular or square).
• the sealing ring 140 may extend over the entire circumference of the inner ring 110 (circular, annular) and, accordingly, the recess may extend over the entire inner circumference of the outer ring 120 (circular, annular).
• the sealing ring 140 (or labyrinth seal) may for example be made of a metal, such as. As steel.
• the sealing ring 140 is at least partially (or completely) of a rubber elastomer (eg, nitrile rubber), or a thermoplastic elastomer (eg, polyurethane).
• a labyrinth seal By the use of a sealing ring, which consists at least partially of a rubber elastomer or a thermoplastic polymer, a labyrinth seal can be formed, which is basically a non-contact seal, but in which there can not be too much damage when the sealing ring in operation now and then touches the surface of the recess.
• the described concept In contrast to the use of steel rings as a sealing ring for labyrinth seals, the described concept, the minimum distance between a surface of the recess and the sealing ring can be reduced, so that the sealing effect of the labyrinth seal is increased, and / or it allows the use of a labyrinth seal in rolling bearings large diameters (greater than 50 cm), since steel rings in such large diameters are difficult to integrate in the rolling bearing and the movement tolerances are higher in large bearings.
• the recess may surround the sealing ring 140, for example, in a U-shape. If the sealing ring 140 is e.g. substantially rectangular or square, the U-shaped recess surrounds the majority of the three exposed sides of the sealing ring. With the fourth side of the seal ring 140 is then disposed on the inner ring 110 or the outer ring 120.
• the rolling bearing 100 of FIG. 1 shows, in addition to the already mentioned elements for a concrete embodiment, additional optional and combinable details such.
• These optional elements will be discussed below. One or more of these optional elements may be combined with the general concept described.
• the seal ring 140 may be disposed on a surface of the outer ring and the inner ring 110 may have the recess.
• the sealing ring 140 is disposed on a surface of the inner ring 110 and the outer ring 120 has the Recess, since in this example, the sealing ring 140 can be easily held on the surface of the inner ring in position.
• the sealing ring 140 may include a sealing body and a spring, such as a tubular spring 142.
• the seal body and the tube spring 142 may be arranged so that the seal body is pressed by the tube spring 142 against the inner ring 110. Thereby, the seal ring 140 can be easily held in position on the surface of the inner ring.
• the inner ring 110 (or alternatively the outer ring 120) may have a groove 112 and the sealing ring 140 may have a bulge projecting into the groove 112 such that the sealing ring 140 is held in position on the surface of the inner ring 110 (or alternatively the outer ring 120)
• the sealing ring 140 could also have a groove and the inner ring 110 could have a bulge protruding into the groove.
• the groove 112 can prevent slippage of the sealing ring 140.
• a tubular spring can also be used to press the sealing ring 140 against the inner ring 110 to prevent the sealing ring 140 from slipping out of the groove 112 due to forces acting orthogonally to the surface of the inner ring 110 (eg. Centrifugal forces due to the rotation of the rolling bearing).
• the outer ring 120 may optionally include a recess forming member 150 and a lid 160 which together form the recess.
• the cover 160 can be connected to the recess-forming component 150 by means of detachable connecting means (eg screws). This makes it possible to replace the sealing ring 140 with little effort by removing the cover 160. The maintenance effort can be further reduced significantly.
• the recess-forming component 150 lies in an L-shape opposite the sealing ring 140 on two sides and the lid 160 faces the sealing ring 140 on a third side, so that the recess-forming member 150 and the lid 160 the sealing ring 140 U-shaped surround. The open side The U-shaped recess then lies, for example, opposite the surface of the inner ring 110 on which the sealing ring 140 is arranged.
• the gap of the labyrinth seal extends in a U-shape around the sealing ring 140.
• a gap between the surface of the inner ring 110 and a first side of the U-shaped recess is the interior of the rolling bearing 100 and a second gap between the surface of the inner ring 110 and a second side of the recess to the outer space of the rolling bearing 100 which are interconnected via the U-shaped gap of the labyrinth seal.
• the recess may be formed so that the exposed surface of the seal ring 140 is completely surrounded except for a gap to the interior of the rolling bearing 100 for receiving the rolling elements 130 and a gap to the outer space of the rolling bearing 100 of the recess.
• a maximum distance of a point of the exposed surface of the sealing ring 140 to a closest point on a surface of the recess may be less than 2 cm (or less than 1 cm, 0.8 cm or 0.5). The smaller the maximum distance, the better the sealing effect of the labyrinth seal. Conversely, however, increases the probability that it comes to a contact of the sealing ring 140 and a surface of the recess during operation.
• the sealing ring 140 has a sealing lip 144 which leads from the remaining sealing ring 140 to a surface of the recess and is in contact with the surface of the recess.
• the sealing lip 144 may include an acute angle with the surface of the recess such that a contact surface of the sealing lip 144 with the surface of the recess along the labyrinth of the formed labyrinth seal is farther from the interior of the rolling bearing 100 to receive the rolling elements 130 as a terminal region
• the sealing lip 144 may be formed so as to approach and touch obliquely from the remaining sealing ring 140 to the surface of the recess, so that lubricant from the interior of the rolling bearing 100 is more likely can escape as dust or water from the outer space of the bearing can penetrate into the interior of the bearing 100.
• the recess may be formed such that it surrounds the sealing ring 140 with no contact with the surface of the recess except for the contact of the sealing lip 144 or, conversely, the sealing ring 140 may be designed such that it is in contact with the sealing lip 144 Surface of the recess does not touch the recess.
• the sealing ring 140 has a substantially rectangular basic shape in this example. From the basic shape, however, by a bulge on the side surface with which the sealing ring 140 is disposed on the inner ring 110, a sealing lip on an orthogonal to the surface of the inner ring 110 side surface of the sealing ring 140 and an obliquely leading into the sealing ring 140 notch in which a Hose spring 142 is arranged. In this case, the notch between the sealing lip 144 and the remaining sealing ring 140 is formed and leads from the sealing lip 144 having the side of the sealing ring 140 in the direction of that side surface of the sealing ring 140 with which the sealing ring 140 is disposed on the inner ring 110.
• the recess and the seal ring 140 may be formed such that a smallest distance of a surface of the recess from the seal ring in the axial direction of the rolling bearing 100 is smaller than 5 mm (or 3 mm, 1 mm or 0.5 mm), especially between 0 , 5 mm and 3 mm, and is less than 1 cm (or less than 7 mm, 5 mm or 3 mm) in the radial direction.
• a rolling bearing in the axial direction a smaller smallest distance of the surface of the recess of the Sealing ring than in the radial direction.
• the rolling bearing 100 has a second sealing ring 180.
• the second sealing ring 180 is arranged on a surface of the inner ring 110 or the outer ring 120 and correspondingly, the outer ring 120 or the inner ring 110 has a further recess.
• the further recess is formed and arranged to surround a majority of an exposed surface of the second seal ring 180 without contact, so that between an interior of the rolling bearing 100 for receiving the rolling elements 130 and an outer space of the rolling bearing 100 through the second sealing ring 180 and the further recess a labyrinth seal is formed and the interior of the rolling bearing 100 for receiving the rolling element 130 on both (two) sides of the rolling bearing 100 is sealed by the formed labyrinth seals.
• the second sealing ring 180 and the further recess optionally one or more of the previously described possible embodiments of the first sealing ring 140 and its recess can be realized.
• the described concept with its optional designs is an interesting sealing concept for large bearings.
• a large bearing can be called a rolling bearing from a diameter of for example 50 cm.
• some embodiments also relate to the implementation of the described concept for rolling bearings with a diameter of more than 1 m, more than 1.8 m, more than 2.5 m or even more than 4 m.
• the diameter of a roller bearing can be defined, for example, by an inner diameter of the inner ring, a center diameter of the inner space of the rolling bearing or an outer diameter of the outer ring or in a similar manner.
• the rolling bearing may be, for example, a cylindrical roller bearing or a tapered roller bearing and in particular a double row or four row tapered roller bearing. But not only in large warehouses an implementation of the described sealing concept is interesting.
• 1 also shows an example of a rolling bearing 200 having an inner ring 110, an outer ring 120, a plurality of rolling elements 130 located between the inner ring 110 and the outer ring 120, and at least one sealing ring 140.
• the sealing ring 140 is attached to a surface of the inner ring 110 or the outer ring 120 arranged and correspondingly, the outer ring 120 or the inner ring 110 has a recess.
• the recess is formed and arranged to surround a majority of an exposed surface of the sealing ring 140 without contact, so that between an inner space of the rolling bearing 100 for receiving the rolling elements 130 and an outer ring of the rolling bearing 100 through the sealing ring 140 and the recess a labyrinth seal is formed.
• the sealing ring 140 is at least partially made of a rubber elastomer or a thermoplastic polymer, in particular polyurethane.
• a labyrinth seal By the use of a sealing ring, which consists at least partially of a rubber elastomer or a thermoplastic polymer, a labyrinth seal can be formed, which is basically a non-contact seal, but in which there can not be too much damage when the sealing ring in operation now and then touches the surface of the recess.
• the described concept In contrast to the use of steel rings as a sealing ring for labyrinth seals, the described concept, the minimum distance between a surface of the recess and the sealing ring can be reduced, so that the sealing effect of the labyrinth seal is increased, and / or it allows the use of a labyrinth seal in rolling bearings large diameters (greater than 50 cm), since steel rings in such large diameters are difficult to integrate in the rolling bearing and the movement tolerances are higher in large bearings.
• a labyrinth seal as non-contact seal the maintenance costs can be generally reduced.
• a contact of the sealing ring with the surface of the recess can cause much less damage than a contact of a sealing ring made of steel, so that at this point the maintenance can also be reduced.
• rolling bearing 200 one or more of the optional implementation s described above may be realized.
• Some embodiments relate to a non-contact seal (labyrinth) for a DRTRB (Nautilus, double-row tapered roller bearing) with integrated dust lip (sealing lip).
• a (useful) labyrinth seal can be easily realized.
• This Seal concept is feasible in terms of cost and feasibility.
• Bearing, seal carrier (recess forming component) and cover can be serial parts.
• the seal can be realized by a single change to the series (the inner ring) by a radial groove on the inner ring. As a result, it may be that no fundamental design changes to the series part are necessary. Thus, this would have a minor impact on the process chain.
• the seal can be replaceable (through the removable cover) without having to disassemble the bearing.
• a sealing lip can be integrated on the labyrinth ring (sealing ring). This is a safeguard against environmental influences (dust, water). Alternatively, this can be solved with an additional V-ring. With this implementation (sealing lip on the sealing ring), this function is integrated in the labyrinth ring.
• aspects of the present invention have been described in the context of an apparatus, it will be understood that these aspects also constitute a description of a corresponding method such that a block or device of a device may also be considered a corresponding method step or feature of a method step , For example, a method for producing or operating a filter cartridge to understand.
• aspects described in connection with or as a method step also represent a description of a corresponding block or detail or feature of a corresponding device.

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• 2013
  • 2013-05-06 DE DE102013208203.7A patent/DE102013208203A1/de not_active Withdrawn
• 2014
  • 2014-04-24 WO PCT/EP2014/058339 patent/WO2014180668A1/de active Application Filing
  • 2014-04-24 EP EP14719019.3A patent/EP2994658A1/de not_active Withdrawn
  • 2014-04-24 US US14/889,636 patent/US20160108966A1/en not_active Abandoned
  • 2014-04-24 CN CN201480032431.4A patent/CN105473881A/zh active Pending

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