CN213415213U

CN213415213U - Special-shaped carrier roller for turning device of belt conveyor

Info

Publication number: CN213415213U
Application number: CN202021532818.5U
Authority: CN
Inventors: 段运雄; 袁海鹏; 符阳; 石晟; 朱立平; 宋兴元
Original assignee: China Coal Technology and Engineering Group Shanghai Co Ltd
Current assignee: China Coal Technology and Engineering Group Shanghai Co Ltd
Priority date: 2020-07-29
Filing date: 2020-07-29
Publication date: 2021-06-11
Anticipated expiration: 2030-07-29

Abstract

The utility model discloses a heterotypic bearing roller for belt conveyor turning device, it includes the casing, axle and the bearing configuration that is located the casing both ends. The bearing is configured by adopting two fulcrums and one-way fixation, and consists of a round nut, a stop washer, a sealing outer cover, an O-shaped ring, an oil seal, a bearing and an inner check ring; the bearing outer ring is contacted with the inner retainer ring; the bearing inner ring is axially positioned by the sealing outer cover and then is matched and locked with the shaft by the stop washer for the round nut. The bearing in the scheme adopts the tapered roller bearing, and can bear radial and axial loads at the same time, so that the bearing capacity is enhanced; the secondary shaft and the outer sealing cover are statically sealed through an O-shaped ring, and the outer sealing cover and the shell are dynamically sealed through an oil seal, so that the waterproof and dustproof effects can be achieved, and the bearing is effectively protected; the sealing elements are standard elements, so that the die sinking of non-standard elements can be avoided, and the cost is reduced.

Description

Special-shaped carrier roller for turning device of belt conveyor

Technical Field

The utility model relates to a machine-building technical field, concretely relates to abnormal shape bearing roller for belt conveyor turning device.

Background

In order to meet different requirements of engineering on the belt conveyor, the belt conveyor has great innovation on arrangement form and structure. At present, in order to meet the requirement of large-angle turning transportation, a common belt conveyor currently used in China mostly adopts a mode of tower connection of two belt conveyors for transshipment, and the mode has large equipment investment and high operation cost. The turning technology of the horizontal turning belt conveyor has certain requirements on the turning radius, and is not suitable for turning transportation of space turning angles, and the minimum turning radius which can be realized by the current domestic horizontal turning technology is 250 m. The turning device can be used for realizing turning transportation with smaller radius and larger angle, power equipment does not need to be added, the operation is convenient and efficient, a core component of the turning roller is usually uniformly arranged on the circumferential surface of the turning roller by adopting a plurality of small carrier rollers, and the arrangement forms of the small carrier rollers are two types:

one is that the axes of the small carrier rollers and the axes of the roller are arranged at a specific included angle, and the size of the included angle is half of the turning angle, as shown in figure 1; the other is that the axes of the small supporting rollers 2 are arranged perpendicular to the axis of the roller 1, as shown in figure 2. Especially, the axes of the small carrier rollers 4 are perpendicular to the axes of the rollers 3, so that the small carrier rollers are required to have stronger axial bearing capacity and axial impact resistance.

The traditional carrier roller is mainly supported by a deep groove ball bearing and can only bear radial load, the axial positioning adopts the snap spring for positioning, the axial clearance cannot be adjusted, and the reliability and the service life of the small carrier roller cannot be ensured under the environment of heavy load, axial stress and impact. With the trend of belt conveyors toward large capacity, long distance and large bandwidth, the small carrier rollers of the traditional structure are difficult to meet the operation requirements.

It follows that how the load carrying capacity of an idler can be enhanced is a problem to be solved in the art.

SUMMERY OF THE UTILITY MODEL

The problem of being difficult to satisfy the heavy load exists to prior art, the utility model aims to provide a heterotypic bearing roller for belt conveyor turning device. The problems in the prior art are well solved.

In order to achieve the purpose, the special-shaped carrier roller used by the turning roller of the belt conveyor turning device provided by the utility model comprises a shell, a shaft and bearing arrangements positioned at the two ends of the shell; the bearing is characterized in that the bearing is fixed in a single direction by adopting double supporting points and comprises a round nut, a stop washer, a sealing outer cover, an O-shaped ring, an oil seal, a bearing and an inner check ring; the bearing is a tapered roller bearing, and one end with a large angle faces to the port of the shell; the bearing outer ring is in contact with the inner retainer ring; the bearing inner ring is axially positioned by virtue of the sealing outer cover and is matched and locked with the shaft by a stop washer through a round nut; the shaft and the sealing outer cover are statically sealed through an O-shaped ring; and dynamic sealing is realized between the sealing outer cover and the shell through an oil seal.

Furthermore, an oil storage cavity is arranged between the inner retainer ring, the oil seal and the bearing.

Further, the shell is of a drum-shaped structure; the size of the outer circle of the carrier roller shell is integrally processed and formed by nylon materials according to the type of the roller, so that an enveloping circle structure formed by the small carrier roller is just the outer circle of the steering roller.

Further, the shaft passes through the center of the carrier roller, and two ends of the shaft are positioned outside the carrier roller shell.

The utility model provides a pair of a heterotypic bearing roller for belt conveyor turning device, its structure to current bearing roller has carried out optimal design, adopts tapered roller bearing, fine promotion the bearing capacity of bearing roller.

Drawings

The invention is further described with reference to the following drawings and detailed description.

FIG. 1 is a schematic view of an angle between the axis of a conventional idler roller and the axis of a roller;

FIG. 2 is a schematic view of a conventional arrangement structure in which the axis of a carrier roller is perpendicular to the axis of a roller;

fig. 3 is a structural sectional view of the novel carrier roller;

Detailed Description

In order to make the technical means, creation features, achievement purposes and functions of the present invention easy to understand and understand, the present invention is further explained by combining with the specific drawings.

Referring to fig. 3, it shows a schematic structural diagram of the carrier roller of the present invention; as can be seen, the novel carrier roller is composed of a round nut 10, a stop washer 20, a sealing outer cover 30, an O-shaped ring 40, an oil seal 50, a bearing 60, an inner retainer ring 70, a shell 80 and a shaft 90.

Specifically, the carrier roller shell 80 is of a round drum-shaped structure, the nylon material is integrally processed and formed, the stress condition of the carrier roller shell is superior to that of a metal shell, the effects of high strength, wear resistance, corrosion resistance and impact resistance are achieved, the coal mine explosion-proof requirement is met, and the carrier roller shell is suitable for high-tension and heavy-load working conditions.

According to the model of the steering roller, the size of the outer circle surface of the carrier roller shell 80 is determined, the enveloping circle formed by the uniformly distributed carrier roller outer circle is just the outer circle surface of the steering roller when viewed axially, so that the contact surface is larger when an adhesive tape runs, the adhesive tape indentation resistance can be reduced, and the performance of the steering roller is improved.

The shaft 90 passes through the centre of the idler and the ends of the shaft 90 are located outside the idler housing 80.

The bearing 60 is located in the housing 80, and is tightly fitted to the housing 80 and the shaft 90. Preferably, the bearing 60 is a tapered roller bearing, and has high load-bearing capacity. The bearing configuration mode adopts the unidirectional fixation of double pivots, and the tapered roller bearing has a large angle towards the end surface of the carrier roller shell 80.

The outer ring of the bearing 60 and the housing 80 are in transition fit, and are axially positioned by the inner retainer ring 70, and the inner retainer ring 70 is axially pressed. The inner retainer ring 70 and the shell 80 are in transition fit; and a proper gap exists between the inner retainer ring 70 and the shaft 90, so that the inner retainer ring is free from contact in the rotating process and is prevented from being abraded.

The bearing inner ring 60 and the shaft 90 are in clearance fit, so that axial clearance adjustment during installation is facilitated.

Further, the sealing outer cover 30 is in clearance fit with the shaft 90, and the bearing inner ring 60 is axially positioned by the sealing outer cover 30 and axially locked by the stop washer 20 and the round nut 10. The shaft end is provided with a key groove, the inner ear of the stop washer 20 is placed in the key groove of the shaft end and is tightly attached to the sealing outer cover 30, the round nut 10 is in threaded fit with the shaft 90, the bearing 60 can be adjusted in axial clearance during assembly, and after the axial position of the round nut 10 is determined, the outer ear of the stop washer 20 is bent and placed in the groove of the round nut 10, so that the round nut 10 is fixed.

The structure can bear larger axial load, the axial clearance of the tapered roller bearing can be conveniently adjusted according to actual conditions, and the service life of the bearing 60 is prolonged.

The interior of the idler is provided with 2 sets of bearing arrangements which are respectively positioned at two ends of the interior of the idler shell 80. The bearing configuration mode formed by the scheme has longer distance with the pressure center and better support rigidity of the shaft under the condition of the same support distance; and the axial adjustment clearance is larger, so that the condition that the bearing 60 is blocked due to the rotation and heating of the shaft is reduced.

Secondly, the sealing parts at the two ends of the carrier roller are sealed by adopting an O-shaped ring 40 and an oil seal 50, wherein the shaft 90 and the sealing outer cover 30 are statically sealed by the O-shaped ring 40, the sealing outer cover 30 and the shell 80 are dynamically sealed by the oil seal 50, and a double-layer sealing mode can play a role in water and dust prevention and effectively protect the bearing 60; the sealing elements are standard elements, so that the die sinking of non-standard elements can be avoided, and the cost is reduced.

In addition, the inner retainer ring 70 and the oil seal 50 are matched with the two ends of the bearing 60 to form an oil storage cavity, and a proper amount of grease can be injected for lubrication according to actual conditions. The bearing roller plays lubricated effect when rotatory, reduces the friction, increases the bearing roller life-span.

According to the special carrier roller formed by the scheme, when the special carrier roller is applied specifically, the belt conveyor conveys the carrier roller through the rotation of the plurality of carrier rollers, and the bearings in the carrier roller adopt tapered roller bearings, so that the special carrier roller can bear radial load and axial load simultaneously, has stronger bearing capacity and is suitable for heavy load and working conditions with axial load; the internal sealing structure of the secondary carrier roller is sealed by adopting a sealing standard part, so that the die sinking of non-standard parts is avoided, and the cost is reduced; the shaft and the outer sealing cover are statically sealed through an O-shaped ring, and the outer sealing cover and the shell are dynamically sealed through an oil seal, so that the bearing is waterproof and dustproof, and the bearing is effectively protected.

The foregoing shows and describes the general principles, essential features, and advantages of the invention. It will be understood by those skilled in the art that the present invention is not limited to the above embodiments, and that the foregoing embodiments and descriptions are provided only to illustrate the principles of the present invention without departing from the spirit and scope of the present invention. The scope of the invention is defined by the appended claims and equivalents thereof.

Claims

1. A special-shaped carrier roller for a turning device of a belt conveyor comprises a shell, a shaft and bearing arrangements, wherein the bearing arrangements are positioned at two ends of the shell; the bearing is characterized in that the bearing is fixed in a single direction by adopting double supporting points and comprises a round nut, a stop washer, a sealing outer cover, an O-shaped ring, an oil seal, a bearing and an inner check ring; the bearing is a tapered roller bearing, and one end with a large angle faces to the port of the shell; the bearing outer ring is in contact with the inner retainer ring; the bearing inner ring is axially positioned by virtue of the sealing outer cover and is matched and locked with the shaft by a stop washer through a round nut; the shaft and the sealing outer cover are statically sealed through an O-shaped ring; and dynamic sealing is realized between the sealing outer cover and the shell through an oil seal.

2. The special-shaped carrier roller for the turning device of the belt conveyor as claimed in claim 1, wherein an oil storage cavity is arranged between the inner retainer ring, the oil seal and the bearing.

3. The profiled idler for a turning device of a belt conveyor as in claim 1 wherein the housing is a drum-shaped structure; the size of the outer circle of the shell is integrally processed and formed by nylon materials according to the type of the roller, so that the enveloping circle structure formed by the small carrier roller is just the outer circle of the steering roller.

4. The profiled idler for a turning device of a belt conveyor as in claim 1 wherein the shaft passes through the idler center with both ends of the shaft located outside the idler housing.