CN209796642U - Double-sealing carrier roller - Google Patents
Double-sealing carrier roller Download PDFInfo
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- CN209796642U CN209796642U CN201920615259.5U CN201920615259U CN209796642U CN 209796642 U CN209796642 U CN 209796642U CN 201920615259 U CN201920615259 U CN 201920615259U CN 209796642 U CN209796642 U CN 209796642U
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- labyrinth
- sealing ring
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Abstract
The utility model belongs to the technical field of the bearing roller, a double seal bearing roller is disclosed. The main technical characteristics are as follows: the roller comprises a roller leather provided with a central shaft, wherein a bearing seat, a bearing inner seal, a bearing, a seal ring fixing sleeve, a longitudinal labyrinth inner seal ring, a dustproof cover and a clamp spring are arranged at the end part of the roller leather, and a transverse labyrinth outer seal ring and a transverse labyrinth inner seal ring are arranged between the bearing and the longitudinal labyrinth inner seal ring. The utility model provides a double seal bearing roller, the sealed mode that vertical maze and horizontal maze combined together, furthest's increase pollutant enters into the route of bearing room, guarantees that the pollutant can not cause the pollution to the bearing in bearing roller life. The sealing structure is made of nylon materials, so that the sealing structure is good in friction resistance and corrosion resistance, and has strong pressure resistance and impact resistance.
Description
Technical Field
The utility model belongs to the technical field of the bearing roller, specifically say and relate to a double seal bearing roller.
background
The idler is one of the most important parts on the belt conveyor, and is the most easily damaged part of the belt conveyor, and the service life of the idler directly influences the operation and service life of the belt conveyor. The existing national standard DTII (A) type carrier roller structure is shown in figure 1 and comprises a roller skin 1, a middle shaft 2, a bearing seat 3, a bearing inner seal 4, a bearing 5, a longitudinal labyrinth inner seal ring 6, a longitudinal labyrinth outer seal ring 7, a seal ring fixing sleeve 8, a dust cover 9 and a clamp spring 10. The carrier roller adopts a longitudinal labyrinth seal, and has the following defects in use:
Firstly, the labyrinth sealing path of the longitudinal labyrinth type seal is too short to support the bearing to operate in a severe environment for a long time. The longitudinal labyrinth seal structure solves the problems of dust prevention and water prevention of the carrier roller to a certain extent. However, the diameter of the roller bearing is generally small, so that a labyrinth passage formed by a longitudinal labyrinth sealing structure is too short, and after a certain period of operation, particularly in a humid and dusty environment such as a mineral separation workshop and the underground, particularly under the heating and breathing action of the bearing in the operation process, external dust easily enters a bearing chamber through a short labyrinth passage to influence the service life of the bearing after being mixed with water to form slurry-like dust;
Secondly, the contact point between the bearing seat and the roller skin is too short, and the bearing seat is easy to deform in the welding process, so that bearing chambers at two ends are not concentric, and the service life of the bearing is influenced;
The sealing ring fixing sleeve is in very small-area contact with the longitudinal labyrinth inner sealing ring, and the sealing ring fixing sleeve is pressed by very large external force to prop the longitudinal labyrinth inner sealing ring to enter a bearing position in the pressing process of the sealing ring, so that the labyrinth inner sealing ring is easily damaged by the overlarge external force, the gap between the inner sealing ring and the outer sealing ring is too small or the inner sealing ring and the outer sealing ring are in direct contact operation, the running resistance of a carrier roller is increased, and the sealing ring is seriously damaged; the sealing ring fixing sleeve is pressed into the bearing seat by external force, no reliable measure is provided after the pressing is finished to ensure that the sealing ring fixing sleeve is not loosened any more, if the carrier roller encounters larger axial external force, the fixing sleeve is easy to loosen, the axial movement of the carrier roller is increased, and the service life of the carrier roller is influenced;
And fourthly, the bearing is pressed and positioned by the inner seal of the bearing, the sealing material in the bearing is made of nylon, the strength is not enough to bear strong bearing pressing force, and the inner seal of the bearing is easily damaged in the process of pressing and mounting the bearing, so that the bearing is pressed and over-positioned, and the shaft moving of the carrier roller is influenced.
SUMMERY OF THE UTILITY MODEL
The utility model provides a technical problem provide a sealed effectual, long service life's double sealing bearing roller.
In order to solve the technical problem, the utility model provides a technical scheme does: the roller comprises a roller leather provided with a central shaft, wherein a bearing seat, a bearing inner seal, a bearing, a seal ring fixing sleeve, a longitudinal labyrinth inner seal ring, a dustproof cover and a clamp spring are arranged at the end part of the roller leather, and a transverse labyrinth outer seal ring and a transverse labyrinth inner seal ring are arranged between the bearing and the longitudinal labyrinth inner seal ring.
The additional technical characteristics are as follows: the edge of the bearing seat is U-shaped, and the outer wall of the bearing seat is in plane contact with the inner wall of the roller shell;
The contact end surfaces of the sealing ring fixing sleeve and the longitudinal labyrinth inner sealing ring, the transverse labyrinth outer sealing ring and the transverse labyrinth inner sealing ring are in plane contact;
The bearing seat is characterized in that a concave platform which is internally sealed with the bearing and matched with the bearing is arranged on the inner side of the bearing seat, the bearing is in edge contact with the concave platform, and the internal seal of the bearing is arranged in the concave platform.
the utility model provides a double seal bearing roller to the too short problem of vertical sealed labyrinth way, is provided with horizontal labyrinth outer seal circle, horizontal labyrinth inner seal circle between bearing and the vertical labyrinth inner seal circle. The sealing mode of combining the longitudinal labyrinth and the transverse labyrinth increases the path of the pollutants entering the bearing chamber to the maximum extent, and ensures that the pollutants can not pollute the bearing in the service life of the carrier roller. The sealing structure is made of nylon materials, so that the sealing structure is good in friction resistance and corrosion resistance, and has strong pressure resistance and impact resistance. Aiming at the problems that the contact between the bearing seat and the roller skin is too little and the bearing seat is easy to deform during welding, the edge of the bearing seat is U-shaped, and the outer wall of the bearing seat is in plane contact with the inner wall of the roller skin. When the roller bearing is installed, the outer wall of the bearing seat and the inner wall of the roller skin are pressed in place in an interference fit mode, the bearing seat is tightly connected with the roller skin, the bearing seat is tightly combined with the roller skin in a radial direction, the concentricity of the bearing is guaranteed to the maximum extent, and even if welding is carried out, the high concentricity of the center of the roller bearing seat and the center of the roller skin can be still guaranteed. Aiming at the problem that the contact area of the sealing ring fixing sleeve and the sealing ring is too small, and the sealing ring is easy to deform, the contact end surfaces of the sealing ring fixing sleeve and the longitudinal labyrinth inner sealing ring, the transverse labyrinth outer sealing ring and the transverse labyrinth inner sealing ring are in plane contact. Therefore, the contact area between the sealing ring fixing sleeve and the sealing ring is increased by several times, the stress on the nylon seal is obviously reduced under the condition of the same pressure, and the sealing ring is protected from being damaged. Meanwhile, the pressure of the sealing ring fixing sleeve and the bearing seat can be increased, and the occurrence of shaft fleeing of the carrier roller is reduced. The bearing seat structure is changed aiming at the defect that the bearing inner seal is easy to damage when the bearing is pressed and installed, the inner side of the bearing seat is provided with a concave platform which is matched with the bearing inner seal and the bearing, the bearing is contacted with the edge of the concave platform, and the bearing inner seal is arranged in the concave platform. The concave table is used as a bearing axial positioning surface, the bearing inner seal is placed in the concave table, the sealing effect is achieved, the bearing is guaranteed not to directly bear the bearing inner seal stress, the bearing is axially positioned by a rigid support, and the shaft fleeing of the carrier roller is reduced.
Drawings
Fig. 1 is a schematic structural view of a conventional carrier roller;
Fig. 2 is the structural schematic diagram of the double-sealing carrier roller of the present invention.
Detailed Description
the specific structure of the double-sealing carrier roller provided by the present invention is further described below with reference to the accompanying drawings.
as shown in fig. 1, the conventional carrier roller comprises a roller skin 1, a middle shaft 2, a bearing seat 3, a bearing inner seal 4, a bearing 5, a longitudinal labyrinth inner seal ring 6, a longitudinal labyrinth outer seal ring 7, a seal ring fixing sleeve 8, a dust cover 9 and a clamp spring 10.
as shown in figure 2, the double-sealing carrier roller of the utility model comprises a roller skin 1 and a middle shaft 2, wherein the end part of the roller skin 1 is provided with a bearing seat 3, a bearing inner seal 4, a bearing 5, a seal ring fixing sleeve 8 and a longitudinal labyrinth inner seal ring 6, the dust cover 9 and the clamp spring 10 are integrated with the longitudinal labyrinth outer sealing ring, a transverse labyrinth outer sealing ring 11 and a transverse labyrinth inner sealing ring 12 are arranged between the bearing 7 and the longitudinal labyrinth inner sealing ring 6, the edge 31 of the bearing seat 3 is U-shaped, the outer wall of the bearing seat 3 is in plane contact with the inner wall of the roller sheet 1, the sealing ring fixing sleeve 8 is in plane contact with the contact end faces of the longitudinal labyrinth inner sealing ring 6, the transverse labyrinth outer sealing ring 11 and the transverse labyrinth inner sealing ring 12, the inner side of the bearing seat 3 is provided with a concave table 32 matched with the bearing inner sealing 4 and the bearing 5, the bearing 5 is in edge contact with the concave table 32, and the bearing inner sealing 4 is arranged in the concave table 32.
The utility model provides a double seal bearing roller to the too short problem of vertical sealed labyrinth way, is provided with horizontal labyrinth outer seal circle 11, horizontal labyrinth inner seal circle 12 between bearing 7 and vertical labyrinth inner seal circle 6. The sealing mode of combining the longitudinal labyrinth and the transverse labyrinth increases the path of the pollutants entering the bearing chamber to the maximum extent, and ensures that the pollutants can not pollute the bearing in the service life of the carrier roller. The sealing structure is made of nylon materials, so that the sealing structure is good in friction resistance and corrosion resistance, and has strong pressure resistance and impact resistance. Aiming at the problems that the contact between the bearing seat 3 and the roller skin 1 is too little and the bearing seat is easy to deform during welding, the edge 31 of the bearing seat 3 is U-shaped, and the outer wall of the bearing seat 3 is in plane contact with the inner wall of the roller skin 1. During installation, the outer wall of the bearing seat 3 and the inner wall of the roller skin 1 are pressed in place in an interference fit mode, the bearing seat 3 is tightly connected with the roller skin 1 at the moment, the bearing 5 is positioned radially by means of tight combination of the plane of the outer wall of the bearing seat 3 and the plane of the inner wall of the roller skin 1, the concentricity of the bearing 5 is guaranteed to the maximum extent, and even if welding is carried out again, the high concentricity of the center of the carrier roller bearing seat 3 and the center of the roller skin 1 can be still guaranteed. Aiming at the problem that the contact area between the sealing ring fixing sleeve 8 and the sealing ring is too small, and the sealing ring is easy to deform, the contact end surfaces of the sealing ring fixing sleeve 8 and the longitudinal labyrinth inner sealing ring 6, the transverse labyrinth outer sealing ring 11 and the transverse labyrinth inner sealing ring 12 are in plane contact. Therefore, the contact area between the sealing ring fixing sleeve 8 and the sealing ring is increased by several times, the stress on the nylon seal is obviously reduced under the condition of the same pressure, and the sealing ring is protected from being damaged. Meanwhile, the pressure of the sealing ring fixing sleeve 8 and the bearing seat 3 can be increased, and the occurrence of shaft jumping of the carrier roller is reduced. Aiming at the defect that the bearing inner seal 4 is easy to be damaged during bearing press-mounting, the structure of the bearing seat 3 is changed, the concave platform 32 matched with the bearing inner seal 4 and the bearing 5 is arranged on the inner side of the bearing seat 3, the bearing 5 is contacted with the edge of the concave platform 32, and the bearing inner seal 4 is arranged in the concave platform 32. The concave table 32 is used as an axial positioning surface of the bearing 5, and the bearing inner seal 4 is placed in the concave table 32, so that the sealing effect is achieved, the bearing 5 is ensured not to directly bear the force on the bearing inner seal 4, the bearing 5 is axially positioned by a rigid support, and the shaft fleeing of the carrier roller is reduced.
The utility model provides a double seal bearing roller not only is limited to above-mentioned structure, and the all is in the utility model discloses any modification, equivalent replacement and improvement etc. of doing on the basis all should contain within the protection scope of the utility model.
Claims (4)
1. Double seal bearing roller, including being provided with centraxonial roller skin, the tip of roller skin is provided with bearing frame, bearing inner seal, bearing, the fixed cover of sealing washer, vertical labyrinth inner seal circle, shield, jump ring, its characterized in that: and a transverse labyrinth outer sealing ring and a transverse labyrinth inner sealing ring are arranged between the bearing and the longitudinal labyrinth inner sealing ring.
2. The dual seal idler roll as claimed in claim 1, wherein: the edge of the bearing seat is U-shaped, and the outer wall of the bearing seat is in plane contact with the inner wall of the roller shell.
3. The dual seal idler roll as claimed in claim 1, wherein: the sealing ring fixing sleeve is in plane contact with the contact end faces of the longitudinal labyrinth inner sealing ring, the transverse labyrinth outer sealing ring and the transverse labyrinth inner sealing ring.
4. The dual seal idler roll as claimed in claim 1, wherein: the bearing seat is characterized in that a concave platform which is internally sealed with the bearing and matched with the bearing is arranged on the inner side of the bearing seat, the bearing is in edge contact with the concave platform, and the internal seal of the bearing is arranged in the concave platform.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920615259.5U CN209796642U (en) | 2019-04-30 | 2019-04-30 | Double-sealing carrier roller |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920615259.5U CN209796642U (en) | 2019-04-30 | 2019-04-30 | Double-sealing carrier roller |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN209796642U true CN209796642U (en) | 2019-12-17 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201920615259.5U Active CN209796642U (en) | 2019-04-30 | 2019-04-30 | Double-sealing carrier roller |
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| CN (1) | CN209796642U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112758363A (en) * | 2020-12-15 | 2021-05-07 | 哈尔滨科海机械设备制造有限公司 | Small screw shaft labyrinth seal device applied to sterile powder feeder |
-
2019
- 2019-04-30 CN CN201920615259.5U patent/CN209796642U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112758363A (en) * | 2020-12-15 | 2021-05-07 | 哈尔滨科海机械设备制造有限公司 | Small screw shaft labyrinth seal device applied to sterile powder feeder |
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