CN213140315U

CN213140315U - O-shaped sealing waterproof carrier roller

Info

Publication number: CN213140315U
Application number: CN202021897328.5U
Authority: CN
Inventors: 张永丰; 金太保; 刘宏兵; 康海英; 翟伟; 徐亮
Original assignee: Anhui Masteel Conveying Equipment Manufacturing Co ltd
Current assignee: Anhui Masteel Conveying Equipment Manufacturing Co ltd
Priority date: 2020-09-02
Filing date: 2020-09-02
Publication date: 2021-05-07
Anticipated expiration: 2030-09-02

Abstract

The utility model discloses a waterproof bearing roller of O type seal belongs to the mechanical engineering field. The utility model discloses a center pin and cover establish the roller skin above that, 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 O type sealing washer in the labyrinth seal. The utility model discloses a O type sealing washer is located axle labyrinth sealing washer and hole labyrinth sealing washer's fit clearance department, installs on hole labyrinth sealing washer to be the line contact in axle labyrinth sealing washer, consequently can seal the clearance of axle labyrinth sealing washer and hole labyrinth sealing washer, prevent that water from entering into inside bearing from the clearance of the two, thereby protected the bearing.

Description

O-shaped sealing waterproof carrier roller

Technical Field

The utility model relates to a mechanical engineering, the more specifically O type seals waterproof 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 relatively 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 O type seal has set up the sealing washer that the shape is the O type on multistage labyrinth seal's basis for solve the relatively poor problem of labyrinth seal clearance seal effect, further strengthened the whole sealed effect of bearing roller, protected the bearing.

2. Technical scheme

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

the utility model provides a waterproof bearing roller is sealed to O type, includes that center pin and cover establish the roller skin on it, 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 O type sealing washer in the labyrinth seal, O type sealing washer 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 further technical scheme, a groove for fixing the O-shaped sealing ring is formed in the hole labyrinth sealing ring at the matching position of the hole labyrinth sealing ring and the shaft labyrinth sealing ring; the O-shaped sealing ring is in line contact with the labyrinth sealing ring for the shaft, and the line contact mode can further reduce the rotation resistance to the carrier roller when the carrier roller rotates.

According to the technical scheme, the number of the grooves is consistent with that of the O-shaped sealing rings, one or more O-shaped sealing rings can be arranged, and the O-shaped sealing rings are arranged in the grooves, so that the number of the grooves is consistent with that of the O-shaped sealing rings.

According to a further technical scheme, an inward-contraction guide inclined plane inclined towards the periphery of the hole labyrinth seal ring is arranged on the outer end face of the hole labyrinth seal ring, and impurities such as water and dust can be thrown out when the hole 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 O type 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, O type sealing washer 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 from entering into inside bearing from the clearance of the two, protected the bearing.

(2) The utility model discloses a waterproof bearing roller is sealed to O type, 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 waterproof bearing roller is sealed to O type, O type sealing washer and the contact mode that the labyrinth seal circle is line contact for the axle can reduce the rotation resistance of bearing roller.

(4) The utility model discloses a waterproof bearing roller is sealed to O type, the number of O type sealing washer can be provided with one and also can be provided with a plurality ofly, because O type sealing washer installs in the recess on the labyrinth seal circle is used in the hole, consequently the number of O type sealing washer and the number phase-match of recess, and the number of O type sealing washer is more, and the sealing performance of bearing roller is better relatively, and is corresponding, and the rotary resistance of bearing roller is also big relatively.

(5) The utility model discloses a waterproof bearing roller is sealed to O type, the adduction direction inclined plane of slope has the guide effect, when rotating, can throw away materials such as water.

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; 62. labyrinth seal ring for shaft;

7. a circlip for the shaft; 8. an O-shaped sealing ring.

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 O type seal waterproof carrier roller of this embodiment, as shown in fig. 1, establish roller skin 1 above that including center pin 2 and cover, 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 O type sealing washer 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 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 an O-shaped sealing ring 8 in the labyrinth sealing ring 6.

Install steel wire retaining ring 3 between bearing frame 4 and bearing 5, O type sealing washer 8 is installed in labyrinth seal 6, and O type sealing washer 8 can seal the gap between two labyrinth type sealing washers to play and prevent in materials such as water from entering into bearing 5 from the gap, prolong bearing 5's life.

Example 2

The basic structure of the O-shaped sealing waterproof carrier roller of the embodiment is the same as that of the embodiment 1, and the differences and improvements are as follows: as shown in fig. 1 and 2, the labyrinth seal 6 includes a shaft labyrinth seal 62 and a hole labyrinth seal 61 that are in clearance fit, an inner periphery of the shaft labyrinth seal 62 is in interference fit with the central shaft 2, and an outer periphery of the hole labyrinth seal 61 is in interference fit with the bearing seat 4.

As shown in fig. 1, the inner periphery of the labyrinth seal 62 for the shaft is fitted to the center shaft 2 by interference, and the labyrinth seal 62 for the shaft does not rotate because the center shaft 2 does not rotate. The outer periphery 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 following 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. In addition, the grooves are formed in the outer side of the labyrinth sealing ring 61 for the hole, so that materials can be saved and the manufacturing cost can be reduced.

Example 3

The basic structure of the O-shaped sealing waterproof carrier roller of the embodiment is the same as that of the embodiment 2, and the differences and improvements are as follows: as shown in fig. 2, a groove 612 for fixing the O-ring 8 is formed in the hole labyrinth seal 61 at a position where the hole labyrinth seal is engaged with the shaft labyrinth seal 62; the O-ring 8 is in line contact with the labyrinth seal 62 for a shaft.

The groove 612 formed in the labyrinth seal ring 61 for the hole is a rectangular groove, the O-shaped seal ring 8 is installed in the groove 612, three surfaces of the groove 612 are tangent to the O-shaped seal ring 8, the O-shaped seal ring 8 is fixed in the groove 612, and the labyrinth seal ring 61 for the hole rotates around the central shaft 2 along with the bearing seat 4, so that the O-shaped seal ring 8 can also rotate, the O-shaped seal ring 8 is in line contact with the labyrinth seal ring 62 for the shaft, and the rotation resistance of the carrier roller can be reduced.

Example 4

The basic structure of the O-shaped sealing waterproof carrier roller of the embodiment is the same as that of the embodiment 3, and the differences and improvements are as follows: as shown in fig. 2, the number of the grooves 612 is equal to the number of the O-rings 8.

One or more O-rings 8 may be provided, and accordingly, the number of the grooves 612 is the same as the number of the O-rings 8 because the O-rings 8 are installed in the grooves 612 of the labyrinth hole seal 61. The more the number of the O-shaped sealing rings 8 is, the better the sealing performance of the carrier roller is relatively, the labyrinth sealing ring 61 for the hole is provided with a plurality of grooves 612, each groove 612 is internally fixed with one O-shaped sealing ring 8, the plurality of O-shaped sealing rings 8 can play a role in multi-stage sealing, and the waterproof performance of the carrier roller can be enhanced. However, although the O-rings 8 are in line contact with the labyrinth seal 62 for the shaft, the greater the number of O-rings 8, the greater the rotational resistance of the idler roller during rotation, and therefore, the smaller the rotational resistance of the idler roller for one O-ring 8 with respect to the plurality of O-rings 8. Therefore, in this embodiment, the rotation resistance of the idler and the waterproof sealing performance of the idler are comprehensively considered, and one O-ring 8 is provided.

Example 5

The basic structure of the O-shaped sealing waterproof carrier roller of the embodiment is the same as that of the embodiment 4, and the differences and improvements are as follows: 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 waterproof bearing roller of O type seal, includes that center pin (2) and cover establish roller skin (1) above that, 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: an O-shaped sealing ring (8) is arranged in the labyrinth sealing ring (6).

2. The O-shaped sealing waterproof carrier roller according to 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 O-shaped sealing waterproof carrier roller according to claim 2, characterized in that: a groove (612) for fixing the O-shaped sealing ring (8) is formed in the hole labyrinth sealing ring (61) at the matching position of the hole labyrinth sealing ring and the shaft labyrinth sealing ring (62); the O-shaped sealing ring (8) is in line contact with the labyrinth sealing ring (62) for the shaft.

4. An O-shaped sealing waterproof carrier roller according to claim 3, characterized in that: the number of the grooves (612) is consistent with that of the O-shaped sealing rings (8).

5. An O-shaped sealing waterproof idler roller according to claim 2, 3 or 4, characterized in that: an inward-closing guide inclined surface (611) inclined toward the outer periphery is provided on the outer end surface of the labyrinth seal for hole (61).