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
  • F16C13/00—Rolls, drums, discs, or the like; Bearings or mountings therefor
  • F16C13/02—Bearings
  • F16C13/022—Bearings supporting a hollow roll mantle rotating with respect to a yoke or axle
• • B—PERFORMING OPERATIONS; TRANSPORTING
  • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
  • B65G—TRANSPORT OR STORAGE DEVICES, e.g. CONVEYORS FOR LOADING OR TIPPING, SHOP CONVEYOR SYSTEMS OR PNEUMATIC TUBE CONVEYORS
  • B65G39/00—Rollers, e.g. drive rollers, or arrangements thereof incorporated in roller-ways or other types of mechanical conveyors 
  • B65G39/02—Adaptations of individual rollers and supports therefor
  • B65G39/09—Arrangements of bearing or sealing means
• • 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
  • F16C19/02—Bearings with rolling contact, for exclusively rotary movement with bearing balls essentially of the same size in one or more circular rows
  • F16C19/04—Bearings with rolling contact, for exclusively rotary movement with bearing balls essentially of the same size in one or more circular rows for radial load mainly
  • F16C19/06—Bearings with rolling contact, for exclusively rotary movement with bearing balls essentially of the same size in one or more circular rows for radial load mainly with a single row or balls
• • 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
  • F16C33/723—Shaft end sealing means, e.g. cup-shaped caps or covers
• • 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
  • F16C33/80—Labyrinth sealings
  • F16C33/805—Labyrinth sealings in addition to other sealings, e.g. dirt guards to protect sealings with sealing lips

Definitions

• the present invention relates to a pollution seal for rollers for use in conveyor belts, preferably. More specifically to a seal to prevent contamination from entering a roller bearing.
• the present invention is described as a seal to prevent the entry of contamination resulting from the environmental contamination of a roller (10) for use in conveyor belts, preferably, those used in mining operations, where the environmental pollution is high
• a cross-sectional profile of a conveyor belt is shown in Figure 2 where a loading station (33), a return station (34) and the structure ( 35) which supports all stations along the conveyor belt
• the invention patent US42771 14A dated 07.07.1981, from Lindegger, entitled “A roller with a labyrinth for sealing”, describes a labyrinth seal element comprising a primary wall that generally extends radially outward from an axis central, a central opening within said primary wall to receive an axis and a plurality of annular sweeping walls that extend axially and extend axially from one side of the primary wall.
• Each annular sweeping wall that extends axially has a radially outer surface that diverges from the axis as it extends from the primary wall.
• At least one of the annular scan walls defines
• the labyrinth passage may comprise portions that widen in the direction towards the outer end of the passage, and the annular tabs on one of the eccentric or non-circular arranged members so that the two members exert a pumping action on any foreign matter in portions flared of the labyrinthine passage after the relative rotation between the two members.
• An objective of the invention is to make a seal to prevent the entry of contamination to a roller bearing, which comprises a seal maze that is composed of four structural bodies, a first body is a front cover, a second rotor body external adjustment, a third electronic container body that is formed by two parts, a support base and a lid, and a fourth body consisting of an internal protection lid; where the front cover is fixed to an axis, of the roller, at the height of the ends of the roller mantle, from an outer vertex of the front cover, an edge is born, which together with a structured housing, which contains the labyrinth of seal, form a first containment chamber; containment barriers are formed by a first protruding part perpendicular to the second half-height external adjustment rotor body and a first L-shaped circular symmetry element that is fixed to said first protruding part, a second circular symmetry element in the form of L is fixed to a second inner projecting part and parallel to the first projecting part, and is
• contact lips a first contact lip between the end of the perpendicular face stop and on the external internal adjustment face of the front cover with the shaft, generating a first containment barrier with said first contact lip; a second containment barrier is located by a second contact lip, which is arranged on the lower face of the upper projection;
• These contact lips are arranged concavely towards the entry of the contamination, which increases the pressure of the seal labyrinth as the contaminant tries to move towards the bearing, according to the operating conditions for which the roller, these contact lips are removable in case you do not need a lot of tightness and you want to reduce friction.
• the internal protection cover consists of a metal ring that fits to the bottom of the bearing housing, and where the metal ring has a conicity that helps the self-centering of the seal maze at the bottom of said structured housing or embedded housing type ; furthermore, said internal protection cover makes contact with the shaft by means of a vulcanized contact lip to the metal ring, which prevents contaminants from entering the inside of the roller, which may be remnants of the manufacturing process or water condensation.
• the assembly of the seal labyrinth for bearing protection is carried out as follows: first the internal protection cover is introduced, then the bearing, then a safety ring is fixed, and then the already prepared seal labyrinth is introduced , where the preparation of the seal maze is done by joining the front cover, with the outer adjustment rotor, and a container, which can optionally contain an electronic sensor, which is formed by two parts, a support base and a lid, the container with the front cover with the outer adjustment rotor body between these two, the electronic container with the front cover joins thanks to a female male flange, where said female male flange is formed by a male flange and a female flange, through of which the front cover is attached to the support base;
• a groove in the shaft produces a wedge with a protrusion of the internal radius of the front cover of the seal labyrinth, this allows, at the time of assembling the seal labyrinth on the shaft, it is positioned accurately and firmly .
• the outer adjustment rotor body has a gap that serves as a clearance so that in case of run-off between the shaft and the external adjustment rotor body does not there is contact or greater contact, in the case of the contact lips, between the parts of the seal labyrinth, and that in an offset caused by failure of wear on the shaft, the external adjustment rotor body makes contact with the electronic container and the first element of circular symmetry in the form of L.
• FIGS 1 A, 1 B and 1 C describe different types of rollers using the seal of the invention.
• Figure 2 describes different types of rollers in a conveyor belt.
• Figure 3 describes a basic exploded view of the seal of the invention.
• Figure 4 describes the position of the seal of the invention, at one end of a roller, in sectional view of the seal.
• Figure 5 shows a partial sectional view of the seal with the detail of its structure.
• Figure 6A shows a partial sectional view of the seal with a first specific detail of its structure.
• Figure 6B shows a detail of the partial sectional view of the seal of Figure 6A.
• Figure 7A shows a detail of the partial sectional view of the seal of Figure 6A.
• Figure 7B shows a detail of the partial sectional view of the seal of Figure 6A.
• Figure 8 shows an isometric view, in section, of the position of the seal at one end of the roller.
• Figure 9 shows an isometric, exploded and exploded view of the seal elements at one end of the roller.
• Figure 10 shows an exploded view of an additional seal component.
• Figure 1 1 shows a detailed view of an internal seal protection cap.
• Figure 12 shows a detail of the internal seal protection cap.
• Figure 13 shows an exploded isometric view of the seal.
• Figure 14 shows an isometric view of the partially armed seal.
• Figure 15 shows an exploded isometric view of the seal in conjunction with the shaft and its housing.
• Figure 16 shows an exploded isometric view of the armed seal.
• the present invention is described as a seal to prevent the entry of contamination resulting from the environmental contamination of a roller (10) for use in conveyor belts, preferably, those used in mining operations, where the environmental pollution is high
• a cross-sectional profile of a conveyor belt is shown in Figure 2 where a loading station (33), a return station (34) and the structure ( 35) which supports all stations along the conveyor belt.
• a roller (10) can have various configurations as described in Figures 1 A, 1 B and 1 C; said roller (10) consists of a mantle (2), a shaft (4), a structured housing (5) or inlay cover type (40) containing a bearing (3) and a seal (1).
• the mantle (2) may have a lining (6) that serves as protection against abrasion or other process characteristics or as a functional element for damping or cleaning the conveyor belt.
• the structured housing (5) forms a structural part of the mantle (2);
• the seal (1) is structured by an internal protection cap (8) and a structured arrangement that forms a seal maze (7), as shown in Figure 3.
• Figure 1 A shows a return roller with structured housing (5) to a mantle (2).
• Figure 1 B shows an uncoated load roller (10), with embedded housing type (40).
• Figure 1 C shows a roller (10) with smooth coating (41), with housing type inlay cover (40).
• the seal (1) shown in figures 4 and 5, consists of a set of channels (9), containment barriers and removable contact lips (1 1), which make it difficult to enter and flow from environmental pollution or process contamination towards the bearing (3), protecting it.
• a seal (1) is shown on the right side of the roller (10); for the description the seal (1) will be shown in the left position of the roller (10), whereby it is defined that a roller (10) has two seals (1), each at its outer ends.
• the seal (1) shown in Figure 5, is a partial sectional view showing the seal maze (7) in detail, understanding that this partial sectional view corresponds to a circular arrangement.
• the seal maze (7) in detail is composed of four structural bodies, a first body is a front cover (12), a second external adjustment rotor body (13), a third electronic container body (25) that is formed by two parts, a support base (36) and a cover (37), and a fourth body consisting of an internal protection cover (8), this is shown in Figure 3.
• the front cover (12) is fixed to the axis (4) at the height of the ends of the mantle (2), from the outer vertex (14) of the front cover (12), an edge (15) is born, see figures 4 and 5, which together with the structured housing (5), of figure 1 A, or an embedded housing type (40) of figures 1 B and 1 C, form a first containment chamber (16), as shown in the detail of figure 7B; in addition, a groove (43) in the shaft (4) produces a wedge with a protuberance (42) of the internal radius of the front cover (12) of the seal labyrinth (7), this allows, at the time of assembly of the seal labyrinth (7) on the shaft (4), it is positioned with precision and firmness.
• Containment barriers which are described in Figure 6B, are formed by a first inner and perpendicular protruding part (17) and halfway up the front cover (12), where this first inner protruding part (17) has a first element of circular symmetry in the form of L (18) that is fixed to said first part projection (17) with its outer vertex at the end of said first inner projection part (17), as shown in Figure 7B, producing a space between the vertical face of the L-shaped circular symmetry element (18) and the inner face of the front cover (12); a second L-shaped circular symmetry element (18) is fixed to a second internal projecting part (17) and parallel to the first projecting part (17), and is located under the first L-shaped circular symmetry element ( 18), and in opposite position, and where this second inner projecting part (17) is at the end of a perpendicular face (13 ') of a second outer adjustment rotor body (13); said second inner projecting part (17) is at a distance on the outer face of the front cover (12), as shown in Figure 7A;
• contact lips (1 1), a first contact lip (1 1) can be disposed between the end of the perpendicular face stop (13 ') and on the external internal adjustment face of the front cover (12 ) with the shaft (4), generating a first containment barrier with said first contact lip (1 1); a second containment barrier is located by a second contact lip (1 1), which is arranged on the lower face of the upper projection (17); as shown in details in figures 6B and 7B;
• These contact lips (1 1) are arranged concavely towards the entry of the contamination, which increases the pressure of the seal (1) as the contaminant tries to move towards the bearing (3), according to the conditions of operation for which the roller (10) is destined, it is possible to remove these contact lips (1 1) in case a lot of tightness is not needed and the friction is to be reduced.
• the fourth body is the internal protection cover (8), which consists of a metal ring (21) that fits to the bottom of the bearing housing (3).
• the ring metallic (21) has a conicity (23) that helps the car centered at the bottom with said, structured housing (5) or housing type embedded cover (40).
• the internal protection cover (8) which is partially shown in Figure 1 1, makes contact with the shaft (4) by means of a vulcanized contact lip (22) to the metal ring (21), this prevents contaminants from entering the inside of the roller (10), which may be remnants of the manufacturing process or water condensation. Since, in the general manufacturing process, minimal amounts of metallic dust, chips and, in addition, it can also happen that the moisture trapped inside the roller condenses and generates water that can enter the bearing from the inside.
• the assembly of the seal (1) for bearing protection (3) is carried out as follows: first the internal protection cover (8) is introduced, then the bearing (3), then a safety ring ( 24), and then the seal labyrinth (7) already prepared is introduced.
• the preparation of the seal labyrinth (7) is done by joining the front cover (12), with the outer adjustment rotor (13), and a container (25), which can contain an electronic sensor (27), optionally in case that is required, which is formed by two parts, a support base (36) and a lid (37) as shown in Figure 10, the container (25) with the front cover (12) with the outer adjustment rotor body (13) between these two, the electronic container with the front cover is attached thanks to a female male flange (26), shown in Figure 6A.
• the male female flange (26) is formed by a male flange (38) and a female flange (39), through which the front cover (12) joins the support base (36).
• the contamination progresses to the bearing (3), it encounters the first containment chamber (16) and then immediately with a narrow neck (20) between the front cover (12) and the outer adjustment rotor body (13 ), these two elements hinder the entry of contamination into the seal (1), once contamination enters, it accumulates in the containment chambers (19) and its advance is limited by the L-shaped circular symmetry elements (18).
• the passage of contamination through channels (9) through the contact lips (1 1) is completely prevented, as shown in Figure 5.
• the channels (9) have the function of changing the direction and direction of progress of the contamination, both radially and axially.
• the outer adjustment rotor body (13) has a groove (44) that serves as a clearance so that in case of runout between the shaft (4) and the external adjustment rotor body (13) there is no contact or greater contact, for the case of the contact lips (1 1), between the parts of the seal labyrinth (7) to a great advance of the runout, as shown in Figure 7C, where it can be seen for example, that in a runout caused by failure of wear on the shaft (4), the outer adjustment rotor body (13) makes contact with the electronic container (25) and the first L-shaped circular symmetry element (18).
• Figures 8 and 9 show in an isometric view the position of the seal (1) on the shaft (4).

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• Engineering & Computer Science (AREA)
• General Engineering & Computer Science (AREA)
• Mechanical Engineering (AREA)
• Sealing Using Fluids, Sealing Without Contact, And Removal Of Oil (AREA)
• Rollers For Roller Conveyors For Transfer (AREA)

Priority Applications (9)

Applications Claiming Priority (1)

Publications (1)

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Citations (6)

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• 2018
  • 2018-02-16 BR BR112020004839-9A patent/BR112020004839B1/pt active IP Right Grant
  • 2018-02-16 CN CN201880057365.4A patent/CN111094154A/zh active Pending
  • 2018-02-16 DE DE112018007082.4T patent/DE112018007082T5/de active Pending
  • 2018-02-16 MX MX2020000272A patent/MX2020000272A/es unknown
  • 2018-02-16 PE PE2020000030A patent/PE20200452A1/es unknown
  • 2018-02-16 WO PCT/CL2018/050010 patent/WO2019157605A1/es active Application Filing
  • 2018-02-16 AU AU2018409056A patent/AU2018409056A1/en active Pending
• 2019
  • 2019-12-27 EC ECSENADI201991485A patent/ECSP19091485A/es unknown
• 2020
  • 2020-01-29 ZA ZA2020/00596A patent/ZA202000596B/en unknown

Patent Citations (6)

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