CN212952727U

CN212952727U - Multistage sealed waterproof bearing roller

Info

Publication number: CN212952727U
Application number: CN202021870185.9U
Authority: CN
Inventors: 张永丰; 金太保; 翟伟; 康海英; 徐亮
Original assignee: Anhui Masteel Conveying Equipment Manufacturing Co ltd
Current assignee: Anhui Masteel Conveying Equipment Manufacturing Co ltd
Priority date: 2020-08-31
Filing date: 2020-08-31
Publication date: 2021-04-13
Anticipated expiration: 2030-08-31

Abstract

The utility model discloses a multistage waterproof seal bearing roller belongs to the mechanical engineering field. The utility model discloses a center pin, the cover is equipped with the roller skin on the center pin, the both ends of roller skin with install the bearing frame between the center pin, install the bearing in the bearing frame, install labyrinth seal in the bearing frame in the bearing outside, install multistage rubber seal on labyrinth seal. The utility model discloses on multistage labyrinth seal's basis, further add multistage seal, played the sealed effect that blocks silt, dust, water respectively, prevent effectively that water and sand, dust from going into the bearing to can effectively solve the relatively poor problem of labyrinth seal clearance seal effect, and cascaded design has reduced the influence of multistage sealing washer to bearing roller rotation resistance.

Description

Multistage sealed waterproof bearing roller

Technical Field

The utility model relates to a mechanical engineering field, the more specifically multistage waterproof seal bearing roller that says so.

Background

The carrier roller is used for supporting the rubber belt in the conveyor, is the component with the largest use amount in the belt conveyor, and has obvious influence on the normal use and the running cost of the conveyor due to the performance of the carrier roller.

The existing carrier roller considers the sealing effect, but increases the rotating resistance of the roller; some rollers reduce the rotation resistance of the rollers, but the sealing effect is not ideal; the existing carrier roller sealing element has more parts, brings inconvenience to production, assembly and maintenance, and increases the manufacturing cost.

Through retrieval, relevant patents are disclosed at present for solving the defects of poor sealing effect or large rotation resistance of the carrier roller. For example, the Chinese patent application number is: CN201511030342.9, published date: the invention patent of 2016, 4, 6 discloses a non-contact symmetric labyrinth type waterproof and dustproof carrier roller sealing device, which comprises a central shaft, wherein a roller is sleeved on the central shaft, bearing seats are arranged between two ends of the roller and the central shaft, bearings are arranged in the bearing seats, a seat sealing device which is tightly matched with the bearing seats is arranged in the bearing seats on the outer side of the bearings, a shaft sealing device which is tightly matched with the central shaft is arranged on the central shaft, the seat sealing device comprises an inner seat sealing element and an outer seat sealing element, the shaft sealing device comprises an inner shaft sealing element and an outer shaft sealing element, the outer periphery of the inner shaft sealing element extends into the space between the inner seat sealing element and the outer seat sealing element and is in clearance fit, and the inner periphery of the outer. But the disadvantages of this solution are: although the resistance of the rotation of the carrier roller is reduced by adopting a clearance fit mode, substances such as external water or dust enter the bearing through a fit clearance, and the sealing effect is poor.

SUMMERY OF THE UTILITY MODEL

1. Technical problem to be solved by the utility model

To the relatively poor problem of current non-contact labyrinth bearing roller seal effect, the utility model discloses a waterproof bearing roller of multistage seal has further add multistage seal on multistage labyrinth seal's basis for solve the relatively poor problem of labyrinth seal clearance seal effect, thereby strengthen the whole sealed effect of bearing roller.

2. Technical scheme

In order to achieve the above purpose, the utility model provides a technical scheme does:

the utility model provides a multistage sealed waterproof bearing roller, includes the center pin, the cover is equipped with the roller skin on the center pin, the both ends of roller skin with install the bearing frame between the center pin, install the bearing in the bearing frame, install labyrinth seal in the bearing frame in the bearing outside install multistage rubber seal in the labyrinth seal, multistage rubber seal can seal the gap between the labyrinth seal to play and prevent that materials such as silt, dust or water from entering into the bearing in the gap, prolong the life of bearing.

Further technical scheme, labyrinth seal is including being clearance fit's labyrinth seal for the axle and hole labyrinth seal, the axle with labyrinth seal's inner circle with center pin interference fit, hole with labyrinth seal's outer lane with bearing frame interference fit, when hole with labyrinth seal takes place to rotate, the rotation of hole with labyrinth seal can not obstructed to the labyrinth seal's for the axle rotation to the rotatory resistance of labyrinth seal to the bearing roller has been reduced.

According to the technical scheme, the multistage rubber sealing rings are arranged between the outer sides of the labyrinth sealing rings for the shafts and the labyrinth sealing rings for the holes, the outer rings of the multistage rubber sealing rings are in interference fit with the labyrinth sealing rings for the holes, the inner rings of the multistage rubber sealing rings are in line contact with the labyrinth sealing rings for the shafts, and the line contact mode can further reduce the rotation resistance of the carrier roller during rotation.

According to the technical scheme, the inner ring of the multistage rubber sealing ring is in a sawtooth shape, so that the sealing effect of blocking silt, dust and water can be achieved, and the sealing effect is good.

According to a further technical scheme, an inward-contraction guide inclined plane inclined towards the periphery edge of the outer end face of the labyrinth seal ring for the shaft is arranged on the outer end face of the labyrinth seal ring for the shaft, and impurities such as water and dust can be thrown out when the labyrinth seal ring rotates.

3. Advantageous effects

Adopt the technical scheme provided by the utility model, compare with prior art, have following beneficial effect:

(1) the utility model discloses a waterproof bearing roller of multistage seal, labyrinth seal include axle with labyrinth seal and hole with labyrinth seal, axle with labyrinth seal and hole with labyrinth seal be clearance fit, multistage rubber seal installs the fit clearance department at axle with labyrinth seal and hole with labyrinth seal, can seal the clearance of axle with labyrinth seal and hole with labyrinth seal, prevent that water, dust or silt enter into inside bearing from the clearance of the two.

(2) The utility model discloses a multistage sealed waterproof bearing roller, axle are clearance fit with the hole labyrinth seal circle, consequently, when the hole labyrinth seal circle takes place to rotate, the rotation of hole labyrinth seal circle can not obstructed to the axle labyrinth seal circle to the rotatory resistance of labyrinth seal circle to the bearing roller has been reduced.

(3) The utility model discloses a multistage waterproof seal bearing roller, multistage rubber seal is the contact mode of line contact with the labyrinth seal circle for the axle, when rotating, can further reduce the rotatory resistance to the bearing roller.

(4) The utility model discloses a multistage waterproof seal bearing roller, the sawtooth is equipped with 3 at least to the high outside-in of sawtooth is cascaded crescent, can play the sealed effect that blocks silt, dust and water respectively, and cascaded sawtooth can further alleviate the rotational resistance to the bearing roller.

(5) The utility model discloses a multistage sealed waterproof bearing roller, the adduction direction inclined plane of slope can reduce the space between the outer terminal surface of labyrinth seal circle for the axle and the bearing frame, reduces the entering of materials such as dust, water to still have the guide effect, when taking place to rotate, can throw away impurity such as water, dust.

Drawings

Fig. 1 is a schematic structural view of the present invention;

fig. 2 is an enlarged view of a portion a of fig. 1.

In the figure:

1. rolling a roller skin; 2. a central shaft; 3. a steel wire retainer ring; 4. a bearing seat; 5. a bearing;

6. a labyrinth seal ring; 61. labyrinth seal ring for hole; 611. adduction of the guide inclined plane; 62. labyrinth seal ring for shaft;

7. a circlip for the shaft;

8. a multistage rubber sealing ring; 81. and (4) saw teeth.

Detailed Description

For a further understanding of the present invention, reference will be made to the following detailed description taken in conjunction with the accompanying drawings.

Example 1

The multistage waterproof seal carrier roller of this embodiment, as shown in fig. 1 and fig. 2, including center pin 2, the cover is equipped with roller skin 1 on center pin 2, the both ends of roller skin 1 with install bearing frame 4 between the center pin 2, install bearing 5 in the bearing frame 4, install labyrinth seal 6 in the bearing frame 4 in the bearing 5 outside install multistage rubber seal 8 in the labyrinth seal 6.

The existing carrier roller is sealed by a labyrinth seal ring 6, and the labyrinth seal ring 6 usually comprises two labyrinth seal rings, namely a labyrinth seal ring 62 for a shaft and a labyrinth seal ring 61 for a hole. Because the two labyrinth type sealing rings need to rotate relatively, the two labyrinth type sealing rings are in clearance fit usually, and substances such as external dust, water and the like can enter the bearing 5 along with a fit gap to damage the bearing 5.

Therefore, in order to overcome the defects, the applicant further improves the existing two labyrinth type sealing rings and adds a multistage rubber sealing ring 8.

Install steel wire retaining ring 3 between bearing frame 4 and bearing 5, multistage rubber seal 8 is installed in labyrinth seal 6, and multistage rubber seal 8 can seal the gap between two labyrinth type sealing washers to play and prevent that material such as silt, dust or water from entering into bearing 5 in the gap, extension bearing 5's life.

Example 2

The basic structure of the multi-stage sealing waterproof carrier roller of the embodiment is the same as that of the embodiment 1, and the difference and the improvement are that: as shown in fig. 1 and 2, the labyrinth seal 6 includes a shaft labyrinth seal 62 and a hole labyrinth seal 61 which are in clearance fit, an inner ring of the shaft labyrinth seal 62 is in interference fit with the central shaft 2, and an outer ring of the hole labyrinth seal 61 is in interference fit with the bearing seat 4.

As shown in fig. 1, the inner ring of the labyrinth seal 62 for a shaft is fitted to the center shaft 2 by interference, and the labyrinth seal 62 for a shaft does not rotate because the center shaft 2 does not rotate. The outer ring of the labyrinth seal 61 for hole is in interference fit with the bearing seat 4, and the labyrinth seal 61 for hole rotates around the central shaft 2 relatively along with the bearing seat 4 because the bearing seat 4 rotates. As shown in fig. 2, the connection between the shaft labyrinth seal 62 and the hole labyrinth seal 61 is an E-shaped port with a right opening, and the connection between the hole labyrinth seal 61 and the shaft labyrinth seal 62 is an E-shaped port with a left opening, and these two ports are connected with each other with a gap therebetween. Therefore, when the labyrinth seal for hole 61 rotates, the labyrinth seal for shaft 62 does not obstruct the rotation of the labyrinth seal for hole 61, and the resistance of the labyrinth seal 6 to the rotation of the idler roller is reduced.

Further, a shaft circlip 7 is attached to the outer end portion of the shaft labyrinth 62 connected to the center shaft 2, thereby further enhancing the sealing function.

Example 3

The basic structure of the multi-stage sealing waterproof carrier roller of the embodiment is the same as that of the embodiment 2, and the difference and the improvement are that: as shown in fig. 2, the multistage rubber seal 8 is installed between the outer side of the labyrinth seal 62 for a shaft and the labyrinth seal 61 for a hole, the outer ring of the multistage rubber seal 8 is in interference fit with the labyrinth seal 61 for a hole, and the inner ring thereof is in line contact with the labyrinth seal 62 for a shaft.

The multistage rubber seal 8 rotates together with the labyrinth seal for hole 61 with respect to the central shaft 2, but the labyrinth seal for shaft 62 does not rotate, so that the multistage rubber seal 8 and the labyrinth seal for shaft 62 are in line contact, and the rotational resistance to the carrier roller can be further reduced during rotation.

Example 4

The basic structure of the multi-stage sealing waterproof carrier roller of the embodiment is the same as that of the embodiment 3, and the difference and the improvement are that: as shown in fig. 2, the inner ring of the multistage rubber seal ring 8 is zigzag.

The contact part of the multistage rubber sealing ring 8 and the labyrinth sealing ring 62 for the shaft is zigzag, and the contact mode that the multistage rubber sealing ring is in line contact with the labyrinth sealing ring 62 for the shaft is realized, so that the rotary resistance to the carrier roller can be reduced when the multistage rubber sealing ring rotates.

In particular, the number of the saw teeth 81 is at least 3, and a sealing function against sand, dust and water can be provided.

And further, the height of the saw teeth 81 is gradually increased in a step-like manner from the outside to the inside, so that the sealing effect is gradually enhanced from the outside to the inside, and the size of the particles of the substance capable of being blocked is gradually reduced from the outside to the inside. Therefore, the multistage rubber seal rings 8 can respectively play a role in sealing silt, dust and water, and prevent the silt, dust or water from entering the bearing 5 inside along with the connection gap between the labyrinth seal ring 62 for the shaft and the labyrinth seal ring 61 for the hole, thereby protecting the bearing 5 and prolonging the service life of the bearing 5.

Compared with the design of the saw teeth 81 with the same height, the design of the stepped saw teeth 81 can further reduce the rotation resistance of the carrier roller, so that the height of the saw teeth 81 in the embodiment is gradually increased in a stepped manner from outside to inside.

In addition, the surface of the inner side of the multistage rubber sealing ring 8, which is in contact with the outer side of the hole labyrinth sealing ring 61, is provided with a groove, and the groove has no sealing effect, so that the design can save the material of the multistage rubber sealing ring 8 and reduce the manufacturing cost.

Example 5

The basic structure of the multi-stage sealing waterproof carrier roller of the embodiment is the same as that of the embodiment 4, and the difference and the improvement are that: as shown in fig. 1 and 2, an inner guide slope 611 inclined toward the outer peripheral edge is provided on the outer end surface of the labyrinth seal 62 for a shaft.

Since the outer ring of the labyrinth seal 62 for a shaft is in interference fit with the bearing housing 4, impurities such as water and dust do not enter the inner bearing 5 from the joint between the two. The inward-closing guide slope 611 reduces a gap between the outer end surface of the labyrinth seal 62 for a shaft and the bearing housing 4, and reduces the entry of dust, water, and other substances, and the inclined inward-closing guide slope 611 has a guiding function, and can throw off impurities such as water, dust, and the like when the shaft rotates.

The present invention and its embodiments have been described above schematically, and the description is not limited thereto, and what is shown in the drawings is only one of the embodiments of the present invention, and the actual structure is not limited thereto. Therefore, if the person skilled in the art receives the teaching of the present invention, without departing from the inventive spirit of the present invention, the person skilled in the art should also design the similar structural modes and embodiments without creativity to the technical solution, and all shall fall within the protection scope of the present invention.

Claims

1. The utility model provides a multistage waterproof seal bearing roller, includes center pin (2), the cover is equipped with roller skin (1) on center pin (2), the both ends of roller skin (1) with install bearing frame (4) between center pin (2), install bearing (5) in bearing frame (4), install labyrinth seal (6), its characterized in that in bearing frame (4) in the bearing (5) outside: and a multi-stage rubber sealing ring (8) is arranged in the labyrinth sealing ring (6).

2. The multistage sealing waterproof carrier roller of claim 1, characterized in that: labyrinth seal circle (6) are including being clearance fit's labyrinth seal circle (62) for the axle and labyrinth seal circle (61) for the hole, the axle with the inner circle of labyrinth seal circle (62) with center pin (2) interference fit, the hole with the outer lane of labyrinth seal circle (61) with bearing frame (4) interference fit.

3. The multi-stage sealing waterproof idler roller according to claim 2, characterized in that: multistage rubber seal (8) are installed between the outside of labyrinth seal (62) for the axle and labyrinth seal (61) for the hole, the outer lane of multistage rubber seal (8) and labyrinth seal (61) for the hole interference fit, its inner circle is line contact with labyrinth seal (62) for the axle.

4. The multi-stage sealing waterproof idler roller according to claim 3, characterized in that: the inner ring of the multistage rubber sealing ring (8) is in a sawtooth shape.

5. A multi-stage sealed water-proof idler roller as claimed in claim 2, 3 or 4 wherein: an inward-closing guide inclined surface (611) inclined towards the outer periphery is arranged on the outer end surface of the labyrinth seal ring (61) for the hole.