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CN-122014754-A - High-load non-outer ring bearing for planetary gear

CN122014754ACN 122014754 ACN122014754 ACN 122014754ACN-122014754-A

Abstract

The invention discloses a high-load non-outer ring bearing of a planetary gear, which relates to the technical field of non-outer ring bearings, and comprises a bearing mounting piece, wherein two sealing auxiliary pieces are arranged on the bearing mounting piece and used for improving the sealing service life, a pushing piece is arranged on the sealing auxiliary piece on the right side, a roller retainer is sleeved on the pushing piece, the roller retainer is sleeved on the bearing mounting piece, two direction limiting pieces are arranged on the pushing piece and used for preventing reverse use, so that the problems that the conventional non-outer ring bearing is inconvenient for automatic radial compensation sealing and the control and positioning of the bearing and the planetary gear are inconvenient after the bearing and the planetary gear are assembled are solved, the service life of a rubber ring can be prolonged by adopting the sealing auxiliary piece, the elastic extrusion expansion can be assisted, and the elasticity of the adaptive rubber ring is reduced due to long-term use.

Inventors

  • Yan Leishan
  • LI XUELEI

Assignees

  • 山东星驰轴承制造有限公司

Dates

Publication Date
20260512
Application Date
20260326

Claims (10)

  1. 1. The planetary gear high-load outer ring-free bearing comprises a bearing mounting piece (1), wherein two sealing auxiliary pieces (2) are mounted on the bearing mounting piece (1), and the planetary gear high-load outer ring-free bearing is characterized in that the two sealing auxiliary pieces (2) are used for prolonging the sealing service life, a pushing piece (3) is mounted on the right side of the sealing auxiliary piece (2), a roller retainer (4) is sleeved on the pushing piece (3), and the roller retainer (4) is sleeved on the bearing mounting piece (1); two direction limiting pieces (5) are arranged on the pushing piece (3), and the direction limiting pieces (5) are used for preventing reverse use; The bearing mounting piece (1) comprises a bearing inner ring (101) and rollers (1011), wherein two rings of rollers (1011) are in rolling fit on the bearing inner ring (101), the two rings of rollers (1011) are fully installed, and threads are respectively arranged at two ends of the bearing inner ring (101).
  2. 2. The high-load non-outer ring bearing for the planetary gear set, as claimed in claim 1, is characterized in that the bearing mounting piece (1) further comprises an oil drain hole (1012) and an oil groove (102), wherein one circle of oil drain holes (1012) are formed in the inner ring (101) of the bearing, one circle of oil groove (102) is formed in the inner ring (101) of the bearing, the oil drain holes (1012) are used for conducting oil, and two circles of rollers (1011) are used for being sleeved into the inner ring of the planetary gear set.
  3. 3. The high-load non-outer ring bearing for the planetary gear set is characterized in that the sealing auxiliary piece (2) comprises a sealing check ring (201) and a sliding sleeve (202), the sealing check ring (201) is connected to the bearing inner ring (101) in a threaded mode, the sliding sleeve (202) is sleeved on the bearing inner ring (101), the inner side of the sliding sleeve (202) is of an inclined surface structure, the sealing check ring (201) is located on the side face of the bearing inner ring (101), and the sealing check ring (201) are concentric.
  4. 4. The high-load outer ring-free bearing for the planetary gear set according to claim 3, wherein the sealing auxiliary piece (2) further comprises a sealing spring (203) and a rubber ring (204), the sealing spring (203) is sleeved on the inner side of the sliding sleeve (202) respectively, the sealing spring (203) is connected between the sealing retainer ring (201) and the sliding sleeve (202), the rubber ring (204) is sleeved on the inner ring (101) of the bearing, the rubber ring (204) is of an elastic rubber structure, the rubber ring (204) is extruded and attached to the inclined surface of the sliding sleeve (202), and the rubber ring (204) is used for elastically attaching the inner ring of the planetary gear set.
  5. 5. The high-load non-outer ring bearing for the planetary gear set is characterized in that the pushing piece (3) comprises a pushing ring (301), the pushing ring (301) is located on the side face of the closed retainer ring (201), the inner hole of the pushing ring (301) is identical to the inner diameter of the inner ring (101) of the bearing, and the pushing ring (301) is made of engineering plastics.
  6. 6. The high-load non-outer ring bearing for the planetary gear set, as claimed in claim 5, wherein the pushing piece (3) further comprises bearing magnets (302), a circle of bearing magnets (302) are fixedly embedded on the pushing ring (301), the circle of bearing magnets (302) are respectively magnetically attracted to the closed retainer rings (201), and the bearing magnets (302) are used for positioning the bearing inner ring (101).
  7. 7. The high-load planetary gear bearing without the outer ring according to claim 5, wherein the roller retainer (4) comprises a retainer cylinder (401) and a gear chamfering spigot (4011), the retainer cylinder (401) is of a plastic structure, the retainer cylinder (401) is sleeved outside two circles of rollers (1011), the retainer cylinder (401) is used for preventing the two circles of rollers (1011) from scattering, the gear chamfering spigot (4011) is fixedly arranged at the bottom of the retainer cylinder (401) and is used for being inserted into a planetary gear inner ring chamfering position, the pushing ring (301) is sleeved in the retainer cylinder (401), and the pushing ring (301) and the retainer cylinder (401) are in interference fit.
  8. 8. The high-load non-outer ring bearing for the planetary gear set according to claim 7, wherein the roller retainer (4) further comprises a one-way groove (4012) and a gear magnet (402), two one-way grooves (4012) are formed in the inner side of the retaining cylinder (401), a circle of gear magnet (402) is fixedly embedded in the bottom of the retaining cylinder (401), and the circle of gear magnet (402) is respectively used for magnetically attaching the planetary gear set.
  9. 9. The high-load outer ring-free bearing of the planetary gear set according to claim 8, wherein the direction limiting piece (5) comprises a limiting sliding block (501) and a ratchet-shaped block (5011), the pushing ring (301) is slidably inserted with two limiting sliding blocks (501), the two limiting sliding blocks (501) are respectively located on the inner side of the retaining cylinder (401), the ratchet-shaped blocks (5011) are respectively fixedly installed at the ends of the two limiting sliding blocks (501), the two ratchet-shaped blocks (5011) are respectively inserted into the two unidirectional grooves (4012), and the ratchet-shaped blocks (5011) are used for unidirectional limiting.
  10. 10. The high-load non-outer ring bearing for the planetary gear set of claim 9, wherein the direction limiting piece (5) further comprises limiting springs (502), the two limiting sliding blocks (501) are respectively sleeved with the limiting springs (502), and the two limiting springs (502) are respectively connected between the two limiting sliding blocks (501) and the pushing ring (301).

Description

High-load non-outer ring bearing for planetary gear Technical Field The invention relates to the technical field of non-outer ring bearings, in particular to a high-load non-outer ring bearing for a planetary gear. Background The planetary gear system is widely applied to scenes such as industrial robot reducers and the like, an outer ring-free bearing is a core component for realizing compact transmission, and is characterized in that an inner ring of the planetary gear can be used as an outer ring of the bearing, the high-load transmission of the planetary gear usually adopts a full-load roller mode to improve the anti-load effect, when the outer ring-free bearing is installed, the planetary gear is usually sleeved into the planetary gear and then inserted into a gear shaft, the problem that the inner ring of the bearing expands due to interference fit to increase abrasion of subsequent assembly of the planetary gear when the gear shaft is inserted first is avoided, a roller protection cylinder is arranged on the outer ring-free bearing in factory to prevent the roller from scattering, the existing outer ring-free bearing is inconvenient for automatic radial compensation sealing, the elasticity of a sealing ring is reduced after long-term use, the oil leakage is directly increased, the service life of the roller is directly influenced, meanwhile, the positioning is inconvenient to control after the bearing and the planetary gear is manually held unstably in a narrow space, the bearing is further pressed and reset after the bearing is shifted when the inner ring of the bearing is sleeved into the gear shaft, abrasion is further, the bearing is prevented from being carried out, and the reverse-load is not convenient to limit anti-load, and the interference fit of the bearing is affected. For this reason we propose a planet high load non-outer race bearing. Disclosure of Invention The invention aims to provide a high-load non-outer ring bearing for a planetary gear, which solves the problems that the existing non-outer ring bearing provided in the background art is inconvenient for automatic radial compensation sealing and the bearing and the planetary gear are inconvenient to control and position after being assembled. The high-load planetary gear bearing without the outer ring comprises a bearing mounting piece, wherein two sealing auxiliary pieces are mounted on the bearing mounting piece and used for prolonging the sealing service life, a pushing piece is mounted on the right side of the sealing auxiliary piece, a roller retainer is sleeved on the pushing piece and sleeved on the bearing mounting piece, two direction limiting pieces are mounted on the pushing piece and used for preventing reverse use, the bearing mounting piece comprises a bearing inner ring and rollers, two rings of rollers are in rolling fit on the bearing inner ring, the two rings of rollers are fully mounted, and threads are respectively arranged at two ends of the bearing inner ring. The bearing mounting piece further comprises an oil drain hole and an oil groove, wherein a circle of oil drain hole is formed in the bearing inner ring, a circle of oil groove is formed in the bearing inner ring, the oil drain hole is used for conducting oil, and two circles of rollers are used for being sleeved into the planetary gear inner ring. The sealing auxiliary piece comprises a sealing check ring and a sliding sleeve, wherein the sealing check ring is in threaded connection with the bearing inner ring, the sliding sleeve is sleeved on the bearing inner ring, the inner side of the sliding sleeve is of an inclined surface structure, the sealing check ring is positioned on the side surface of the bearing inner ring, and the sealing check ring are concentric. The sealing auxiliary piece comprises a sealing spring and a rubber ring, wherein the sealing spring is sleeved on the inner side of the sliding sleeve respectively, the sealing spring is connected between the sealing retainer ring and the sliding sleeve, the rubber ring is sleeved on the bearing inner ring and is of an elastic rubber structure, the rubber ring is extruded and attached to the inclined surface of the sliding sleeve, and the rubber ring is used for being elastically attached to the inner ring of the planetary gear. Preferably, the pushing piece comprises a pushing ring, wherein the pushing ring is positioned on the side surface of the closed retainer ring, the inner hole of the pushing ring is identical to the inner diameter of the bearing inner ring, and the pushing ring is engineering plastic. Preferably, the pushing piece further comprises a bearing magnet, a circle of bearing magnet is fixedly embedded on the pushing ring, the circle of bearing magnet is respectively magnetically attracted with the closed check ring, and the bearing magnet is used for positioning the bearing inner ring. The roller retainer comprises a retainer cylinder and a gear chamfering spigot, wherein