CN202272467U

CN202272467U - Roller sealing device

Info

Publication number: CN202272467U
Application number: CN2011203222640U
Authority: CN
Inventors: 程东平; 王东; 崔成春; 马开放; 张勇杰
Original assignee: Triumph Heavy Industry Co Ltd
Current assignee: Triumph Heavy Industry Co Ltd
Priority date: 2011-08-30
Filing date: 2011-08-30
Publication date: 2012-06-13
Anticipated expiration: 2021-08-30

Abstract

The utility model relates to a roller sealing device, which comprises bearing blocks, wherein bearings are arranged in the bearing blocks; a bearing block inner hole on the outer end face of each bearing is fixedly provided with an inner sealing ring with a labyrinth groove; a roller shaft is sleeved with an outer sealing ring forming a labyrinth seal with the inner sealing ring; the outer end face of the outer sealing ring is provided with a cover cap and a protective cover in turn; the inner side of the protective cover is provided with a circular groove; the cover cap comprises first and second cylinders and a circular disk connecting the first and second cylinders; the end face of the first cylinder far from the second cylinder is pressed against the inner sealing ring; and the end face of the second cylinder far from the first cylinder is clamped with the circular groove. According to the technical scheme, one end of the cover cap is pressed against the inner sealing ring, and the other end of the cover cap is clamped with the protective cover, so that a labyrinth barrier is formed; and therefore, impurities are blocked by the labyrinth seal between the protective cover and the cover cap before entering the inner and outer sealing rings, the dustproof and waterproof effects are enhanced and a sealing effect is good.

Description

The carrying roller sealing arrangement

Technical field

The utility model relates to a kind of carrying roller, relates to a kind of carrying roller sealing arrangement specifically.

Background technology

Carrying roller occupies considerable status in belt conveyor system, be the vitals of belt conveyer, is the vitals that guarantees load-transfer device and material ability smooth transport and reduce Transport resistance.Carrying roller distributes along the conveyer total length, and quantity is a lot, and its working condition directly influences the operational effect of conveyer.The performance of carrying roller and its hermetically-sealed construction have certain relation, and the quality of sealing property is directly connected to energy consumption of the rotational resistance of carrying roller, service life, noise emission and power or the like.There is more defective in the sealing of existing carrying roller, and as being through the sealing of V-type circle between cover cap and the protective cover, the V-type circle very easily weares and teares and produces the slit in the work, and the dustproof and waterproof performance is undesirable; The roll shaft of carrying roller is to draw optical axis, and no axial location etc. between bearing and the axle causes drawbacks such as sealing effectiveness is poor, rotational resistance is big.

The utility model content

The purpose of the utility model provides a kind of carrying roller sealing arrangement, and this installs good sealing effect.

For realizing above-mentioned purpose, the utility model has adopted following technical scheme: the carrying roller sealing arrangement is installed between the roll body and roller carrier shaft of carrying roller; Comprise and embed and be welded on the bearing seat on the roll body end; Bearing is installed in the bearing seat, is installed with the inner seal ring of band maze trough in the inner hole of bearing seat of bearing outside end face, be arranged with the exterior seal ring that forms labyrinth packing with inner seal ring on the roller carrier shaft; The outside end face of said exterior seal ring is provided with cover cap and protective cover successively; The inboard of described protective cover is provided with circular groove, and described cover cap comprises first, second cylinder and the annual disk that connects first, second cylinder, and the diameter of first cylinder and the external diameter of annual disk match; The diameter of second cylinder and the internal diameter of annual disk match; And the endoporus of first cylinder and bearing seat constitutes interference fit, and first cylinder leans away from the end face and the inner seal ring of second cylinder, and second cylinder fastens away from the end face and the circular groove of first cylinder.

The roller carrier shaft of the utility model is a stepped shaft, and bearing axle and is provided with trip ring between the outside end face of exterior seal ring and the protective cover on the shaft shoulder that is positioned at roller carrier shaft.

Be provided with inner seal ring between the inner side end of the bearing of the utility model and the inner hole of bearing seat bottom.

The external diameter of the protective cover of the utility model and the aperture of inner hole of bearing seat match, and leave the gap between protective cover and the inner hole of bearing seat.

The roller carrier shaft of the utility model is provided with the back stop slot that matches with protective cover.

Can know by technique scheme; The utility model leans through an end and the inner seal ring with cover cap, and the other end and protective cover fasten, and forms the barrier of one labyrinth type with this; Foreign material were stopped by the labyrinth packing between protective cover and the cover cap earlier before getting into inside and outside seal ring; Strengthened the dustproof and waterproof effect, good sealing effect, the performance and the service life of also having improved carrying roller simultaneously.

Description of drawings

Fig. 1 is the structural representation of the utility model;

Fig. 2 is the structural representation of the utility model cover cap.

The specific embodiment

Below in conjunction with accompanying drawing the utility model is further specified:

A kind of carrying roller sealing arrangement as shown in Figure 1 is installed between the roll body 1 and roller carrier shaft 2 of carrying roller, comprises embedding and be welded on the bearing seat 3 on roll body 1 end; Bearing 4 is installed in the bearing seat 3; Be installed with the inner seal ring 5 of band maze trough in bearing seat 3 endoporus of bearing 4 outside end faces, be arranged with the exterior seal ring 6 that forms labyrinth packing with inner seal ring 5 on the roller carrier shaft 2, the outside end face of exterior seal ring 6 is provided with cover cap 7 and protective cover 8 successively; The inboard of protective cover 8 is provided with circular groove 81; As shown in Figure 2, diameter and the external diameter of annual disk 73 that cover cap 7 comprises first, second cylinder 71,72 and connects annual disk 73, the first cylinders 71 of first, second cylinder 71,72 match; The internal diameter of the diameter of second cylinder 72 and annual disk 73 matches; And first cylinder 71 constitutes interference fit with the endoporus of bearing seat 3, and first cylinder 71 leans away from the end face and the inner seal ring 5 of second cylinder 72, and second cylinder 72 fastens away from the end face and the circular groove 81 of first cylinder 71; Be exactly in other words cover cap 7 an end and inner seal ring 5 against, the other end of cover cap 7 engages with circular groove 81.

Cover cap 7 forms labyrinth packing between protective cover 8, strengthened the effect of dustproof and waterproof, thereby has improved the performance and the service life of carrying roller.

Be provided with inner seal ring 10 between the inner side end of bearing 4 and the bearing seat 3 endoporus bottom, said here bearing inner side end is meant a side of protective cover 8 far away.

As the preferred version of the utility model, roller carrier shaft 2 is a stepped shaft, and bearing 4 axial location and are provided with trip ring 9 between the outside end face of exterior seal ring 6 and the protective cover 8 on the shaft shoulder of roller carrier shaft 2.Bearing 4 works with trip ring 9 one and can prevent the end float misalignment of roller carrier shaft 2 like this; Reduce the rotational resistance of carrying roller, simultaneously, trip ring 9 is arranged between exterior seal ring 6 and the protective cover 8; Can prevent corrosion, thus bigger lifting the performance and the service life of carrying roller.

As more preferred scheme; The aperture of the external diameter of protective cover 8 and bearing seat 3 endoporus matches; And leave the gap between protective cover 8 and bearing seat 3 endoporus, roller carrier shaft 2 is provided with the back stop slot 11 that matches with protective cover 8, promptly cooperates between roller carrier shaft 2 and the protective cover 8 to be processed with back stop slot 11; Back stop slot 11 has guaranteed the accuracy and the fastness of protective cover 8 location effectively; And can prevent well that foreign material such as dust from entering into labyrinth packing inside, and promptly before the labyrinth packing that inside and outside seal ring is formed, set up barrier again one, stop foreign material.

In sum, the utility model has reduced the rotational resistance of carrying roller through the reasonable disposition of roller carrier shaft and each sealing member, has promoted the sealing property of carrying roller, has prolonged the service life of carrying roller.

Above-described embodiment describes the preferred implementation of the utility model; Be not that scope to the utility model limits; Under the prerequisite that does not break away from the utility model design spirit; Various distortion and improvement that those of ordinary skills make the technical scheme of the utility model all should fall in the definite protection domain of the utility model claims.

Claims

1. carrying roller sealing arrangement; Be installed between the roll body (1) and roller carrier shaft (2) of carrying roller; Comprise and embed and be welded on the bearing seat (3) on roll body (1) end; Bearing (4) is installed in the bearing seat (3), is installed with the inner seal ring (5) of band maze trough in bearing seat (3) endoporus of bearing (4) outside end face, be arranged with the exterior seal ring (6) that forms labyrinth packing with inner seal ring (5) on the roller carrier shaft (2); It is characterized in that: the outside end face of said exterior seal ring (6) is provided with cover cap (7) and protective cover (8) successively; The inboard of described protective cover (8) is provided with circular groove (81), and described cover cap (7) comprises first, second cylinder (71,72) and the annual disk (73) that connects first, second cylinder (71,72), and the external diameter of the diameter of first cylinder (71) and annual disk (73) matches; The internal diameter of the diameter of second cylinder (72) and annual disk (73) matches; And first cylinder (71) constitutes interference fit with the endoporus of bearing seat (3), and first cylinder (71) leans away from the end face and the inner seal ring (5) of second cylinder (72), and second cylinder (72) fastens away from the end face and the circular groove (81) of first cylinder (71).

2. carrying roller sealing arrangement according to claim 1; It is characterized in that: described roller carrier shaft (2) is a stepped shaft; Bearing (4) axial location and is provided with trip ring (9) between the outside end face of exterior seal ring (6) and the protective cover (8) on the shaft shoulder of roller carrier shaft (2).

3. carrying roller sealing arrangement according to claim 1 is characterized in that: be provided with inner seal ring (10) between the inner side end of bearing (4) and bearing seat (3) the endoporus bottom.

4. carrying roller sealing arrangement according to claim 1 is characterized in that: the aperture of the external diameter of described protective cover (8) and bearing seat (3) endoporus matches, and leaves the gap between protective cover (8) and bearing seat (3) endoporus.

5. carrying roller sealing arrangement according to claim 1 is characterized in that: described roller carrier shaft (2) is provided with the back stop slot (11) that matches with protective cover (8).