EP4301995A1 - Dispositif de protection de roulement - Google Patents

Dispositif de protection de roulement

Info

Publication number
EP4301995A1
EP4301995A1 EP22763929.1A EP22763929A EP4301995A1 EP 4301995 A1 EP4301995 A1 EP 4301995A1 EP 22763929 A EP22763929 A EP 22763929A EP 4301995 A1 EP4301995 A1 EP 4301995A1
Authority
EP
European Patent Office
Prior art keywords
bearing
shaft
protector
bearing protector
shaped flexible
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
EP22763929.1A
Other languages
German (de)
English (en)
Inventor
Davey Joe Vadder
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.)
Evapco Inc
Original Assignee
Evapco Inc
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
Priority claimed from US17/190,306 external-priority patent/US11525480B2/en
Application filed by Evapco Inc filed Critical Evapco Inc
Publication of EP4301995A1 publication Critical patent/EP4301995A1/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
    • 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
    • F16C33/7896—Sealings of ball or roller bearings with a diaphragm, disc, or ring, with or without resilient members with two or more discrete sealings arranged in series
    • 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
    • F16C33/30—Parts of ball or roller bearings
    • F16C33/66—Special parts or details in view of lubrication
    • F16C33/6603—Special parts or details in view of lubrication with grease as lubricant
    • F16C33/6607—Retaining the grease in or near the bearing
    • F16C33/6618—Retaining the grease in or near the bearing in a reservoir in the 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
    • F16C2226/00—Joining parts; Fastening; Assembling or mounting parts
    • F16C2226/50—Positive connections
    • F16C2226/60—Positive connections with threaded parts, e.g. bolt and nut connections
    • 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
    • F16C2226/00—Joining parts; Fastening; Assembling or mounting parts
    • F16C2226/50—Positive connections
    • F16C2226/62—Positive connections with pins, bolts or dowels
    • 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
    • F16C2226/00—Joining parts; Fastening; Assembling or mounting parts
    • F16C2226/50—Positive connections
    • F16C2226/70—Positive connections with complementary interlocking parts
    • F16C2226/74—Positive connections with complementary interlocking parts with snap-fit, e.g. by clips
    • 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
    • F16C2300/30—Application independent of particular apparatuses related to direction with respect to gravity
    • F16C2300/34—Vertical, e.g. bearings for supporting a vertical shaft
    • 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
    • F16C2360/00—Engines or pumps
    • F16C2360/46—Fans, e.g. ventilators

Definitions

  • This invention relates to bearing seals.
  • Ball bearings are commonly used to support vertical shafts for air moving fans in cooling equipment like cooling towers. When these bearings are used in service outdoors, especially in a saturated cooling tower environment, they are subject to water condensation and subsequent infiltration past the seal which leads to premature bearing lubrication failure, corrosion, and ultimately mechanical failure. Bearing “slingers” and “flingers” are commonly used in these applications to reduce water infiltration into the bearings.
  • This invention serves to solve the problems of the prior art by providing a close- fitting through-shaft secondary protective grease seal and be installed on multiple common bearing brands without removing the shaft from the bearing.
  • a bearing protector having a generally radially or annular shaped housing that is configured to fit snugly around the shaft and the bearing assembly (i.e., around locking collar of the bearing and over the outer race of the bearing), but which, when fastened to the bearing assembly and shaft, creates a space between the bearing assembly and the bearing protector which space may be filled with protective grease.
  • the annular housing is not continuous, but is characterized by a first and second end which abut each other when fastened to the shaft and bearing assembly.
  • the annular housing is sufficiently flexible so that its annular shape can be opened, for example by spreading or twisting, separating the first and second ends, so that it can be placed around the shaft and the bearing without removing the shaft from the bearing.
  • the first and second ends of the protector will abut or nearly abut one-another, and may be fixed tightly to one-another by snap fit, screw, nut and bolt, or any other fixation method and/or device.
  • a bearing protector is formed by a radial cup-like structure whose internal diameter closely matches the bearing locking collar or inner race extension and fits over and is attached to the bearing locking collar, extended inner race, shaft, or combinations thereof.
  • This cup-like structure radiates down and outward toward and close to the bearing outer race.
  • a cavity is formed between the primary bearing seal and this structure, or bearing protector. This cavity receives grease through the bearing primary seal which is located on the face of the bearing. This cavity is filled with grease expelled from the primary bearing seal and displaces water and/or contaminants that would normally be in contact with the primary bearing seal.
  • the bearing protector is “slit” down one side, enabling it to be deformed into an open position to be placed on a shaft laterally without access to the end of the shaft.
  • the protector may be fastened to the bearing locking collar or extended inner race by friction, by screw, but bolt and nut, by snap fit, or by any known fastening means.
  • the bearing protector may be manufactured from Acrylonitrile styrene acrylate (“ASA”), making the product suitable for 3D printing in addition to other manufacturing methods including injection molding.
  • ASA Acrylonitrile styrene acrylate
  • the foregoing is not intended to limit the invention to any particular material or method of manufacture, provided that the product has sufficient flexibility to be opened around a shaft for installation yet be sufficiently firm to maintain shape and performance following installation.
  • Figure 1 shows a perspective view of a bearing protector according to an embodiment of the invention.
  • Figure 2 shows a first step in a method for installation of a bearing protector according to an embodiment of the invention by deforming and opening the slit construction.
  • Figure 3 shows a second step in a method for the installation of a bearing protector according to an embodiment of the invention.
  • Figure 4 shows the grease cavity formed between the primary bearing seal and bearing protector according to an embodiment of the invention.
  • Figure 5 shows close-up detail of the secondary grease seal formed between the primary bearing outer race and bearing protector according to an embodiment of the invention.
  • bearing protector 1 may be formed by an annular cup-like structure having a front face 3 defining an annular shaft facing surface 5 and a side face 7, having a locking collar portion 9, a conical flange portion 11, and an outer race facing surface 13.
  • the inner diameter of the locking collar portion 9 may be configured to closely match the shape and outer diameter of the bearing locking collar, inner race extension, or shaft so as to snugly fit over it during installation and use.
  • the conical flange portion 11 extends down and away from the locking collar portion 9 and terminates at the outer race facing surface 13.
  • the annular shape of the bearing protector 1 is interrupted by a slit or opening 15 bound by first and second ends 17, 19 of the annular bearing protector 1.
  • the bearing protector 1 of the invention is sufficiently flexible that it may be twisted so that first and second ends 17, 19 may be separated a distance sufficient to allow passage of the shaft there-between, permitting installation and removal of the bearing protector without separating the bearing from the shaft. See, Figure 2.
  • Figure 4 shows the conical (triangular in cross section) cavity 12 defined by the inside surface of the conical flange portion 11, and the bearing primary seal 16. This cavity is filled with grease that is expelled from the bearing primary seal when the bearing is lubricated. This cavity shown close-up in Figure 5.
  • the primary bearing seal 16 contacts the inner and outer race surfaces that abut the bearing.
  • outer race facing surface 13 and bearing outer race 14 form a secondary grease seal 18. This secondary grease seal reduces exposure of contaminants to the primary bearing seal 16.
  • Secondary seal 18 is close tolerance, non-contact, grease-filled gap of .0005” to .010”.

Landscapes

  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Rolling Contact Bearings (AREA)
  • Motor Or Generator Frames (AREA)
  • Sealing Devices (AREA)
  • Sealing Of Bearings (AREA)
  • Mounting Of Bearings Or Others (AREA)
  • Installation Of Indoor Wiring (AREA)

Abstract

L'invention concerne un dispositif de protection de roulement en deux parties, présentant une conception souple qui ajoute une protection contre l'humidité améliorée à un roulement et peut être installé sans qu'il soit nécessaire de retirer le roulement de la machine dans laquelle il est installé.
EP22763929.1A 2021-03-02 2022-03-02 Dispositif de protection de roulement Pending EP4301995A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US17/190,306 US11525480B2 (en) 2018-08-13 2021-03-02 Bearing protector
PCT/US2022/018415 WO2022187293A1 (fr) 2021-03-02 2022-03-02 Dispositif de protection de roulement

Publications (1)

Publication Number Publication Date
EP4301995A1 true EP4301995A1 (fr) 2024-01-10

Family

ID=83154428

Family Applications (1)

Application Number Title Priority Date Filing Date
EP22763929.1A Pending EP4301995A1 (fr) 2021-03-02 2022-03-02 Dispositif de protection de roulement

Country Status (11)

Country Link
EP (1) EP4301995A1 (fr)
JP (1) JP2024508892A (fr)
KR (1) KR20230153433A (fr)
CN (1) CN116964343A (fr)
AU (1) AU2022230387A1 (fr)
BR (1) BR112023016186A2 (fr)
CA (1) CA3208259A1 (fr)
IL (1) IL305620A (fr)
MX (1) MX2023010015A (fr)
WO (1) WO2022187293A1 (fr)
ZA (1) ZA202308338B (fr)

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2586069B1 (fr) * 1985-08-06 1989-06-30 Nadella Roulement sans jeu a precontrainte localisee a montage sur un arbre par engagement lateral
US4659240A (en) * 1986-07-14 1987-04-21 Rogus Thomas E Bearing protector

Also Published As

Publication number Publication date
IL305620A (en) 2023-11-01
KR20230153433A (ko) 2023-11-06
CA3208259A1 (fr) 2022-09-09
WO2022187293A1 (fr) 2022-09-09
ZA202308338B (en) 2024-03-27
JP2024508892A (ja) 2024-02-28
BR112023016186A2 (pt) 2023-12-12
CN116964343A (zh) 2023-10-27
AU2022230387A1 (en) 2023-08-24
MX2023010015A (es) 2023-09-07

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