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CN-224211796-U - Electric roller end sealing structure and roller conveying line

CN224211796UCN 224211796 UCN224211796 UCN 224211796UCN-224211796-U

Abstract

The utility model relates to an end sealing structure of an electric roller and a roller conveying line. The electric roller end cover solves the technical problem that the sealing design of the existing electric roller end cover is unreasonable. The end sealing structure of the electric roller comprises an end cover, a positioning mandrel, a bearing, a supporting outer cylinder and an annular groove, wherein the end cover is of a cylindrical structure, a central cavity, a rotating cavity and a roller cavity are sequentially arranged inside the end cover along the radial outward direction of a central shaft, the central cavity is axially arranged in the end cover in a penetrating mode, one end of the positioning mandrel penetrates out of the outer side of the end cover, the bottom of the central cavity is embedded with an outer oil seal sleeved on the circumferential outer wall of the positioning mandrel, the bearing is provided with at least one group and is positioned and embedded in the rotating cavity, the bearing is sleeved on the circumferential outer wall of the positioning mandrel, the supporting outer cylinder is fixedly connected with the end cover, and the roller cavity is an annular groove recessed in the axial direction. This electronic cylinder tip seal structure reduces the axial pressure of outer oil blanket, reduces the influence each other simultaneously, improves the holistic sealing performance of electronic cylinder moreover.

Inventors

  • WANG TIANGEN
  • Shi Caifei

Assignees

  • 嘉善华凯机械有限公司

Dates

Publication Date
20260508
Application Date
20250619

Claims (9)

  1. 1. An end seal structure for a motorized pulley, comprising: the end cover (10) is of a cylindrical structure, and a central cavity (11), a rotating cavity (12) and a roller cavity (13) which are axially arranged in a stepped manner are sequentially arranged inside the end cover (10) along the radial direction of the central shaft outwards; The positioning mandrel (20) axially penetrates through the end cover (10) and one end of the positioning mandrel penetrates out of the end cover (10), and an outer oil seal (30) sleeved on the circumferential outer wall of the positioning mandrel (20) is embedded at the bottom of the central cavity (11); The bearing (40) is provided with at least one group and is positioned and embedded in the rotating cavity (12), and the bearing (40) is sleeved on the circumferential outer wall of the positioning mandrel (20); The supporting outer cylinder (50) is fixedly connected with the end cover (10), the roller cavity (13) is an annular groove recessed in the axial direction, and one end of the supporting outer cylinder (50) is embedded into the roller cavity (13).
  2. 2. A motorized pulley end sealing structure according to claim 1, characterized in that the bottom of the end of the rotating chamber (12) close to the central chamber (11) is provided with a concave return groove (121).
  3. 3. A motorized pulley end sealing structure according to claim 2, characterized in that the bearing (40) is provided with an outer ring positioning portion (41) with one end abutting against the inner wall of the return groove (121).
  4. 4. A motorized pulley end sealing arrangement according to claim 1, characterized in that the circumferential inner wall of the end of the rotating chamber (12) remote from the central chamber (11) is provided with a mounting boss (122).
  5. 5. The motorized pulley end seal arrangement according to claim 4, wherein an inner oil seal (60) positioned on the mounting boss (122) is provided in the rotary chamber (12).
  6. 6. A motorized pulley end seal according to claim 1, characterized in that a sealing cushion (70) is provided in the pulley cavity (13).
  7. 7. The motorized pulley end sealing structure according to claim 6, characterized in that the radially outer wall of the supporting outer cylinder (50) is flush with the radial end face of the end cap (10), and a coating pad (51) is provided outside the supporting outer cylinder (50).
  8. 8. The motorized pulley end sealing structure according to claim 6, wherein the support outer cylinder (50) is provided radially outside with a support wall (52) that is sleeved on the outer wall of the end cap (10).
  9. 9. A roller conveyor line characterized by having the motorized roller end seal structure of any one of claims 1-8.

Description

Electric roller end sealing structure and roller conveying line Technical Field The utility model belongs to the field of electric rollers, and relates to an end sealing structure of an electric roller and a roller conveying line. Background For example, chinese patent literature discloses a novel oil leakage-proof and easy-to-disassemble electric roller [201610587264.0] which comprises a roller, an end cover and an oil seal assembly, wherein the oil seal assembly comprises an oil seal bushing, a sealing cover and a framework oil seal, the bearing comprises an inner ring, an outer ring, a ball cavity and balls, the ball cavity is arranged between the inner ring and the outer ring, the end cover comprises an installation column sleeve, the installation column sleeve comprises a sleeve body and a sleeve column cavity, the bearing is arranged in the sleeve column cavity, a backflow hole which is communicated with the inner space and the outer space of the end cover is formed in the sleeve column body, and a backflow groove which is communicated with the backflow hole and the ball cavity is formed in the sealing cover. The technical scheme has the defects that the end cover tends to be of a flat plate structure, the inner parts of the roller are positioned in the same cavity space, the sealing requirement on the structure is high, and in practice, the axial pressure of the oil seal is high. Disclosure of utility model The utility model aims to solve the problems in the prior art and provide a sealing structure for the end part of a motorized pulley and a pulley conveying line. The aim of the utility model can be achieved by the following technical scheme: The motorized pulley end seal structure includes: The end cover is in a cylindrical structure, and a central cavity, a rotating cavity and a roller cavity which are axially arranged in a stepped manner are sequentially arranged in the end cover along the radial direction of the central shaft outwards; The positioning mandrel axially penetrates through the end cover, one end of the positioning mandrel penetrates out of the end cover, and an outer oil seal sleeved on the circumferential outer wall of the positioning mandrel is embedded at the bottom of the central cavity; The bearing is provided with at least one group and is positioned and embedded in the rotating cavity, and the bearing is sleeved on the circumferential outer wall of the positioning mandrel; The supporting outer cylinder is fixedly connected with the end cover, the roller cavity is an annular groove recessed in the axial direction, and one end of the supporting outer cylinder is embedded into the roller cavity. Further, a concave reflux groove is arranged at the bottom of one end of the rotating cavity close to the central cavity. Further, the bearing is provided with an outer ring positioning part with one end abutting against the inner wall of the reflux groove. Further, a mounting protrusion is provided on the circumferential inner wall of the end of the rotation cavity remote from the center cavity. Further, an inner oil seal positioned and arranged on the mounting convex part is arranged in the rotating cavity. Further, a sealing cushion is arranged in the roller cavity. Further, the radial outer wall of the supporting outer cylinder is flush with the radial end face of the end cover, and a cladding pad is arranged on the outer side of the supporting outer cylinder. Further, a supporting wall sleeved on the outer wall of the end cover is arranged on the radial outer side of the supporting outer cylinder. The utility model also provides a roller conveying line, which is provided with the end sealing structure of the motorized roller. Compared with the prior art, the end sealing structure of the electric roller utilizes a plurality of cavities designed by the steps inside the end cover, sets the outer oil seal, the bearing and the connecting position of the supporting outer cylinder at intervals, reduces the axial pressure of the outer oil seal, reduces the influence of the outer oil seal and the bearing, and improves the sealing performance of the whole electric roller. Drawings Fig. 1 is a schematic view of an end sealing structure of a motorized pulley according to the present utility model. Fig. 2 is a schematic view of an end cap provided with the motorized pulley end seal structure of fig. 1. Fig. 3 is a schematic view of a supporting outer cylinder provided in the end sealing structure of the motorized pulley of fig. 1. In the figure, 10 parts of end cover, 11 parts of central cavity, 12 parts of rotating cavity, 121 parts of reflux groove, 122 parts of installation convex part, 13 parts of roller cavity, 20 parts of positioning mandrel, 30 parts of outer oil seal, 40 parts of bearing, 41 parts of outer ring positioning part, 50 parts of supporting outer cylinder, 51 parts of cladding pad, 52 parts of supporting wall, 60 parts of inner oil seal, 70 parts of sealing cushion. Detailed