Low-noise carrier roller

Abstract

The utility model relates to the field of conveyor equipment, in particular to a low-noise carrier roller which comprises a roller shaft, a roller cylinder, a bearing piece and a bearing ring seat, a protective sleeve is installed between the bearing piece and the bearing ring seat in an inserted and sleeved mode, a sealing device is arranged at the outer end of the bearing piece, and the sealing device comprises a first sealing sleeve piece, a second sealing sleeve piece and a sealing ring. A mounting ring groove is formed in the inner wall of the outer end of the second sealing kit, the two sealing rings are symmetrically arranged side by side, the outer ring parts of the two sealing rings are correspondingly inserted into the mounting ring groove, and the two symmetrical outer ends of the inner ring parts of the two sealing rings obliquely extend outwards to form lip edges correspondingly attached to the outer wall of the first sealing kit; an oil storage cavity for externally controlling introduction of lubricating oil is arranged between the sealing device and the bearing part, and a step ring is arranged on the outer wall of the inner end of the protective sleeve, so that a clamping groove communicated with the oil storage cavity is formed between the outer end of the protective sleeve and the bearing ring seat; the low-noise carrier roller can effectively reduce the damage of jumping wear, reduce noise, improve the rotation flexibility and prolong the service life.

Description

A low-noise idler roller Technical Field

[0001] This utility model relates to the field of conveyor equipment, and in particular to a low-noise idler roller. Background Technology

[0002] Belt conveyors are common equipment in the lifting and transportation industry, and idlers are an important component of belt conveyors. The performance of idlers directly affects the power consumption, belt tension, and service life of belt conveyors. The idlers used in traditional belt conveyors are metal idlers, which have disadvantages such as high noise, poor rotational sealing, and severe rotational wear. This not only affects the service life of the equipment, but also has an adverse impact on the work and life of workers and nearby residents.

[0003] Chinese utility model patent with announcement number CN205010946U discloses a sealing device for idler rollers. This sealing device combines the advantages of contact sealing and labyrinth sealing, improving sealing performance and wear resistance, and reducing rotational resistance to a certain extent. However, the sealing ring blocks the labyrinth lubrication oil path, increasing wear and resistance, and does not completely solve the problem of high noise. Summary of the Invention

[0004] In order to overcome the shortcomings of the prior art and solve the existing technical problems, this utility model discloses a low-noise idler roller, which can effectively reduce the damage of vibration wear, reduce noise, and improve rotational flexibility and service life.

[0005] To achieve the above objectives, the present invention adopts the following technical solution:

[0006] A low-noise idler roller includes a roller shaft and a roller cylinder rotatably mounted on the roller shaft at both ends via bearing components. A bearing ring seat is inserted between the bearing components and the roller cylinder, and a protective sleeve is inserted between the bearing components and the bearing ring seat. A sealing device is provided at the outer end of the bearing components. The sealing device includes a first sealing kit mounted on the roller shaft and a second sealing kit inserted into the inner wall of the bearing ring seat. A sealing ring is provided between the outer ends of the first and second sealing kits. An installation ring groove is provided on the inner wall of the outer end of the second sealing kit. Two sealing rings are arranged symmetrically side by side, and the outer rings of the two sealing rings are correspondingly inserted into the installation ring grooves. The two outer ends of the inner rings of the two sealing rings extend outward at an angle, corresponding to the outer wall of the first sealing kit. An oil storage cavity for externally controlled introduction of lubricating oil is provided between the sealing device and the bearing components. A stepped ring is provided on the outer wall of the inner end of the protective sleeve, so that a groove connecting the outer end of the protective sleeve and the bearing ring seat is formed to the oil storage cavity.

[0007] Furthermore, the inner end face of the bearing ring seat is uniformly provided with multiple process holes, and the multiple process holes are arranged in multiple rows along the radial direction of the bearing ring seat.

[0008] Furthermore, the roller surface is provided with U-shaped ventilation grooves.

[0009] Furthermore, the depth of the oil storage cavity is 4–8 mm.

[0010] Furthermore, the inner ends of the first sealing kit and the second sealing kit are provided with interlocking toothed ring portions.

[0011] Furthermore, the roller shaft is fitted with a retaining spring for limiting the outer end of the inner ring of the bearing component, the stepped surface of the bearing ring seat for mounting the bearing component is provided with a sealing gasket, and the inner wall of the roller is provided with a metal liner.

[0012] By adopting the technical solution described above, this utility model has the following beneficial effects:

[0013] The low-noise idler disclosed in this utility model adopts a double-seal ring, double-lip structure, which can prevent seal failure and increase the sealing effect. Moreover, by installing the seal ring in the mounting ring groove of the second sealing kit, the contact with the first sealing kit is reduced, and the lubrication oil path is not blocked. This reduces wear and ensures the effectiveness of rotational sealing and lubrication. By deepening the mounting hole of the bearing ring seat for mounting the bearing components, the oil storage cavity is expanded. This not only lengthens the contact length with the roller shaft and roller cylinder and enhances the load-bearing capacity of the idler, but also increases the gap between the bearing components and the sealing device, resulting in lower rotational resistance. The lubricating oil filled in the oil storage cavity and the groove can further isolate noise, reduce friction, avoid lubricating oil waste, improve rotational flexibility, and thus extend the service life of the bearing components. Attached Figure Description

[0014] Figure 1 is a partial cross-sectional structural diagram of this utility model;

[0015] Figure 2 is an enlarged structural diagram of part A in Figure 1;

[0016] Figure 3 is a schematic diagram of the inner end face of the bearing ring seat.

[0017] In the figure: 1. Roller; 2. Metal liner; 3. Roller shaft; 4. Bearing ring seat; 401. Process hole; 5. First sealing kit; 6. Sealing ring; 601. Lip; 7. Second sealing kit; 8. Oil reservoir; 9. Protective sleeve; 10. Gutter; 11. Bearing component; 12. Sealing gasket. Detailed Implementation

[0018] The technical solution of this utility model will now be described with reference to the accompanying drawings of the embodiments of this utility model. In the description, it should be understood that the terms "upper," "lower," "front," "rear," "left," and "right," etc., indicating directions or positional relationships, are only used to correspond to the accompanying drawings of this utility model for ease of description, and do not indicate or imply that the device or element referred to must have a specific orientation.

[0019] Referring to Figures 1-3, the low-noise idler roller includes a roller shaft 3 and a roller 1 rotatably mounted on the roller shaft 3 at both ends via bearing components 11. A retaining circlip is fitted onto the shaft of the roller shaft 3 to limit the outer end of the inner ring of the bearing component 11. A bearing ring seat 4 is inserted between the bearing component 11 and the roller 1. The bearing component 11 is axially positioned through the stepped hole of the bearing ring seat 4 and the retaining circlip. A sealing gasket 12 is provided on the stepped surface of the bearing ring seat 4 where the bearing component 11 is mounted to increase the sealing effect and prevent oil leakage. The inner wall of the roller 1 is provided with a metal liner 2. The bearing component 11 and the roller shaft... A protective sleeve 9 is inserted between the bearing ring seats 4. The inner end of the protective sleeve 9 is narrowed and abuts against the outer ring of the bearing component 11 for limiting protection. The outer end of the bearing component 11 is provided with a sealing device. The sealing device includes a first sealing kit 5 fitted on the roller shaft 3 and a second sealing kit 7 inserted into the inner wall of the bearing ring seat 4. A sealing ring 6 is provided between the outer ends of the first sealing kit 5 and the second sealing kit 7. The inner ends of the first sealing kit 5 and the second sealing kit 7 are provided with interlocking toothed rings to ensure the sealing effect while facilitating the storage of lubricating oil for lubrication.

[0020] As needed, the inner end face of the bearing ring seat 4 is uniformly provided with multiple process holes 401, and the multiple process holes 401 are arranged in multiple rows along the radial direction of the bearing ring seat 4. The traditional single row of large holes is changed to double or multiple rows of small holes, which saves raw materials, improves the shrinkage defects of injection molded parts, and enhances the load-bearing capacity. In addition, the surface of the roller 1 is provided with U-shaped ventilation grooves, which can reduce the noise generated by wind resistance. The roller 1 can be radially runout processed to reduce the noise generated by the vibration of the roller bracket.

[0021] The inner wall of the outer end of the second sealing kit 7 is provided with a mounting ring groove. Two sealing rings 6 are arranged symmetrically side by side, and the outer rings of the two sealing rings 6 are inserted into the mounting ring grooves. The two outer ends of the inner rings of the two sealing rings 6 extend outward at an angle, corresponding to lips 601 close to the outer wall of the first sealing kit 5. The double sealing ring and double lip structure can prevent sealing failure and increase the sealing effect. Moreover, the sealing rings 6 are installed securely in the mounting ring grooves of the second sealing kit 7. While reducing contact with the first sealing kit 5, it will not block the lubrication oil path, reduce wear, and ensure... To achieve the effect of rotational sealing and lubrication, an oil reservoir 8 is provided between the sealing device and the bearing component 11 for external control of the introduction of lubricating oil. The depth of the oil reservoir 8 can be set to 4-8mm. A stepped ring is provided on the outer wall of the inner end of the protective sleeve 9 so that a clamping groove 10 connecting the outer end of the protective sleeve 9 and the bearing ring seat 4 is formed to the oil reservoir 8. The oil reservoir 8 increases the gap between the bearing component 11 and the sealing device, and reduces the rotational resistance. The lubricating oil filled in the oil reservoir 8 and the clamping groove 10 can further isolate noise and reduce friction. Compared with the traditional method of digging a groove on the inner end face of the protective sleeve 9 alone, it can avoid the waste of lubricating oil.

[0022] By implementing the low-noise idler roller described in this utility model, during the operation of the idler roller, the circulating oil supply gate in the oil storage chamber 8 can continuously supply lubricating grease into the grooves of the bearing components, so that the bearing is permanently lubricated, the noise is lower, and the service life is longer. Moreover, the lubricating oil can flow outward through the structure of the first sealing kit 5, the second sealing kit 7 and the two sealing rings 6 and be stored in the sealing device, and can also flow inward into the clamping groove, which greatly increases the lubrication effect, reduces wear, and improves the rotational flexibility and service life of the idler roller.

[0023] The parts of this utility model not described in detail are prior art. It is obvious to those skilled in the art that this utility model is not limited to the details of the above exemplary embodiments, and that this utility model can be implemented in other specific forms without departing from the spirit or basic characteristics of this utility model. Therefore, the above embodiments should be regarded as exemplary and non-limiting in all respects. The scope of this utility model is defined by the appended claims rather than the foregoing description. Therefore, it is intended to include all changes that fall within the meaning and scope of the equivalents of the claims in this utility model, and no reference numerals in the claims should be regarded as limiting the content of the claims.

Claims

1. A low-noise idler roller, comprising a roller shaft (3) and a roller (1) rotatably mounted on the roller shaft (3) at both ends via bearing components (11), wherein a bearing ring seat (4) is inserted between the bearing component (11) and the roller (1), and a protective sleeve (9) is inserted between the bearing component (11) and the bearing ring seat (4), wherein a sealing device is provided at the outer end of the bearing component (11), the sealing device comprising a first sealing kit (5) mounted on the roller shaft (3) and a second sealing kit (7) inserted into the inner wall of the bearing ring seat (4), and a sealing ring (6) is provided between the outer ends of the first sealing kit (5) and the second sealing kit (7), characterized in that: The inner wall of the outer end of the second sealing kit (7) is provided with an installation ring groove. Two sealing rings (6) are arranged symmetrically side by side, and the outer rings of the two sealing rings (6) are inserted into the installation ring grooves. The two outer ends of the inner rings of the two sealing rings (6) extend outwards with lips (601) that are close to the outer wall of the first sealing kit (5). An oil storage cavity (8) for external control of the introduction of lubricating oil is provided between the sealing device and the bearing component (11). The outer wall of the inner end of the protective sleeve (9) is provided with a stepped ring so that a clamping groove (10) connecting the oil storage cavity (8) is formed between the outer end of the protective sleeve (9) and the bearing ring seat (4).

2. The low-noise idler roller according to claim 1, characterized in that: The bearing ring seat (4) has a plurality of process holes (401) uniformly arranged on the inner end face, and the plurality of process holes (401) are arranged in multiple rows along the radial direction of the bearing ring seat (4).

3. The low-noise idler roller according to claim 1, characterized in that: The roller (1) has a U-shaped ventilation groove on its surface.

4. The low-noise idler roller according to claim 1, characterized in that: The depth of the oil storage cavity (8) is 4-8 mm.

5. The low-noise idler roller according to claim 1, characterized in that: The inner ends of the first sealing kit (5) and the second sealing kit (7) are provided with interlocking toothed rings.

6. The low-noise idler roller according to claim 1, characterized in that: The roller (3) is fitted with a retaining ring for limiting the outer end of the inner ring of the bearing component (11), and the bearing ring seat (4) has a sealing gasket (12) on the stepped surface for mounting the bearing component (11), and the inner wall of the roller (1) is provided with a metal liner (2).

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