RU210535U1 - COVER FOR CONVEYOR ROLLER - Google Patents

Abstract

The utility model relates to the field of conveyor rollers, in particular, to conveyor roller covers. The technical result achieved by the solution is to increase the reliability of the conveyor roller cover and the conveyor roller bearing assembly as a whole. conveyor, containing a polymer cylindrical body with a central hole for the axis of the conveyor roller, characterized in that the outer radius of the cylindrical body corresponds to the radius of the inner space of the conveyor roller body; on the inner side of the cylindrical body, a cylindrical cavity is made with a height and radius sufficient for tight placement of the stuffing box and bearing.

Description

Field of technology to which the utility model belongs

The utility model relates to the field of conveyor rollers, in particular to conveyor roller covers.

State of the art

Known support roller conveyor (RU141696U1, publ. 06/10/2014). A well-known utility model relates to belt and roller conveyors, in which support rollers are used as elements supporting the conveyor belt or cargo during transportation. Declared support roller conveyor, consisting of a cylindrical body. Bearing assemblies are fixed inside the housing at the ends. Each node is made in the form of a glass, in which a bearing and a labyrinth seal are installed. The inner race of the bearing is fixed on the axle. A locking element is installed in the annular groove of the axle to press the fixed bushing of the labyrinth seal against the inner race of the bearing. The locking element is made in one piece with the fixed sleeve of the labyrinth seal on its end cylindrical part in the form of locking protrusions with a hook, spaced around the circumference. On the movable bushing of the labyrinth seal, a two-lip anther is fixed, which interacts with the cylindrical surface of the fixed bushing of the labyrinth seal with its edges. The movable sleeve of the labyrinth seal is pressed against the outer race of the bearing by the cover of the bearing unit, and a grease fitting is installed on the cover of the bearing unit. The technical result of the utility model is to increase the operational reliability and durability of the conveyor support roller, simplify the design and reduce the complexity of its manufacture.

However, this solution uses a rather complex design with many parts, which reduces its reliability.

A conveyor roller is known (RU144081U1, publ. 08/10/2014). A well-known utility model relates to belt and roller conveyors, in which support rollers are used as elements supporting the conveyor belt or cargo during transportation. Declared a conveyor roller, consisting of a cylindrical body. Inside the housing, supports are fixed at the ends, in which bearings and bearing seals are installed. The inner race of each bearing is fixed on the axle. Bearing seals are closed from the outside by covers, which are attached to the supports by means of one-piece fasteners. One-piece fasteners are made in the form of "blind" rivets, and the outer surface of such rivets can be made corrugated. The technical result of the utility model is to increase the operational reliability of the conveyor roller, reduce the complexity of its manufacture. 3 formulas, 1 drawing page.

However, this solution uses a rather complex design with many parts, which reduces its reliability.

Known, selected as a prototype, is a roller of a belt conveyor with a cover (RU2314987C1, publ. 28.07.2006). The known invention relates to conveyor transport, namely to the rollers of belt conveyors used in the metallurgical, mining and coal industries. The roller contains a hollow cylindrical body, an axle, bearings and a set of sealing elements installed on the axle, which has a wave-like surface at the place of their landing, and placed inside the cups along the ends of the body, having locking elements. Each cup is provided with a lubricator, the outlet of which is connected with the interaction surface of the cup and a rigid ring with pockets open towards the sealing elements, and having passages for lubricant supply to the sealing elements and to the outer surface of the axle, and placed between them. The rigid ring is installed with a clearance relative to the axis. The inner end surface of the cup has a wavy surface, and the end section of the axis and the cup outside the seating area of the sealing elements is made with a taper from 1.5 to 5 degrees. The invention provides an increase in the reliability of the roller and an increase in its service life.

However, this solution uses only metal elements, in particular, the analogue of the claimed roller cover is made of metal, which leads to a decrease in corrosion resistance and, accordingly, reliability.

Utility Model Disclosure

In one aspect of the utility model, a cover for a conveyor roller is disclosed, comprising:

- a polymer cylindrical body with a central hole for the axis of the conveyor roller, characterized by the fact that

- the outer radius of the cylindrical body corresponds to the radius of the inner space of the conveyor roller body;

- on the inner side of the cylindrical body, a cylindrical cavity is made with a height and radius sufficient for tight placement of the stuffing box and bearing.

In additional aspects of the utility model, it is disclosed that the lid body is made of polyurethane; in the cover body there is a channel from the outer side to the inner side, and the outlet of the channel is located at such a depth as to lubricate the bearing; a grease fitting is installed at the channel inlet; The grease fitting is installed in the recess of the cover body, and the depth of the recess is greater than the height of the raised part of the grease fitting.

The main objective of the claimed utility model to be solved is to increase the reliability of the conveyor roller cover.

The essence of the utility model lies in the fact that the proposed polymer cover of the conveyor roller is designed to fit tightly into the cylindrical body of the conveyor roller, to contain the bearing together with the stuffing box. In this case, the cover contains a hole for the axle and a lubrication channel to provide the possibility of supplying oil to the bearing without disassembling the roller.

The technical result achieved by the solution is to increase the reliability of the conveyor roller cover and the bearing assembly of the conveyor roller as a whole.

Brief description of the drawings

1 shows a known conveyor roller.

Figure 2 shows the bearing assembly with the declared cover.

Implementation of the utility model

The utility model is a polymer cover in the form of a cylinder with a longitudinal hole for the axis of the conveyor roller. As a polymeric material, polyurethane (in particular, SKU-PFL polyurethane), a composite with suitable properties, or other plastic can be used. It is preferable to use polyurethane, since polyurethane has high abrasive wear resistance, elasticity and strength. It has high anti-friction properties and increased wear resistance, so that the polyurethane cover can be used without lubrication.

The longitudinal hole is made in the center of the cylinder, its radius is chosen so as to ensure the minimum distance between the axis and the surface of the longitudinal hole of the cover. Thus, the cover should rotate freely on the axis, but dust and dirt should not enter the gap in large quantities. The selection of the ratio of radii is a standard technical problem that does not relate to the essence of the proposed solution, a specialist in the art, based on his knowledge, will be able to solve it without applying creative efforts. For example, the difference in radii may be 0.5 or 0.2 or 0.1 mm.

The outer radius of the cover is selected so that the cover enters the inner space of the conveyor roller housing, designed to accommodate the bearing block, without the possibility of rotation. This connection is provided by friction forces, but it is possible to use protrusions and grooves on the connected parts.

The internal space may be the internal space of the cylindrical cavity inside the roller or the space formed by the cup inside the cylindrical cavity, which is not the essence of the proposed solution.

The bearing block consists of a bearing and all related elements necessary for secure fastening of the bearing on the axle, secure fastening in the roller housing, for reliable operation of the bearing, in general: circlips, washers, seals, protective covers, etc.

The claimed solution describes a cover for a conveyor roller, which serves to protect the bearing block, however, the bearing block is described as an assembly unit consisting of a bearing and an oil seal, other elements of the bearing block are not described, since they are insignificant within the framework of the claimed solution.

The proposed cover reliably protects the bearing block from adverse environmental conditions: dust, moisture, shock.

The prototype shown in figure 1 contains a cup 2, which also protects the bearing from adverse external factors, however, it is made of metal, which reduces its corrosion resistance, the bearing can lead from hitting the cup 2. In addition, the metal cup is heavier, more difficult to manufacture and process, and more difficult to fit tightly into the roller body.

The claimed cover for the conveyor roller is shown in figure 2, which shows:

- conveyor roller cover 201;

- bearing - 202;

- stuffing box - 203;

- oiler - 204.

Cover 201 is a polymer cylinder with a central hole for the axis of the conveyor roller (not shown in figure 2), while its outer radius corresponds to the radius of the roller body (not shown in figure 2) to ensure secure fixation of the cover in the roller body. The polymeric material must have sufficient strength and hardness to ensure the functioning of the roller.

On the inner side of the cover relative to the roller, a cylindrical cavity is made to accommodate the bearing 202 and the stuffing box 203. The stuffing box 203 must be sized to prevent dust, water and dirt from the environment from entering the bearing 202. The design and features of the stuffing box 203 are not essential for the stated solution.

A bearing 202 is also placed in the cylindrical cavity, the height of the bearing 202 and the depth of the cavity are selected to ensure that the bearing 202 is securely fixed in the cover. The radius of the cavity is selected to ensure that the bearing 202 fits snugly into it.

Due to the fact that the bearing is protected from the environment by a cover, the reliability of the conveyor roller is ensured. The cover itself, made of polymer, tightly installed in the roller body, is characterized by increased reliability.

Installation and operation of the proposed device

An oil seal 203 and a bearing 202 are installed in the cover 201 made to the specified dimensions, the cover 201 itself is installed in the housing of the conveyor roller. During the operation of the roller, the cover provides reliable fastening of the bearing 202 in the roller, reliable protection of the bearing 202 from adverse external conditions.

Embodiment 1

In one embodiment, the cover body 201 is made of polyurethane, wherein the cover body 201 is provided with a channel from the outside to the inside, this channel allows oil to be supplied to the bearing.

In the case of a stuffing box, the channel is located radially behind the stuffing box, so the outlet of the channel is turned towards the bearing 202, while the specific outlet of the channel is chosen so that the supplied oil enters the space between the stuffing box 203 and the bearing 202 in order to get to the rollers from this space bearing 202.

Embodiment 2

In another embodiment, a grease nipple is installed at the inlet of the channel, which ensures that the entire volume of oil supplied is directed to the bearing, compared to an option without a check valve. Also, dust, water and dirt cannot enter the bearing through the grease fitting.

In order to reduce the possibility of damage to the oiler due to mechanical influences, it is recessed to the level of the surface of the cover 201. The recess in the cover 201 can have any suitable shape, it is only important that its depth should be such that the oiler does not protrude beyond the surface of the cover. 201, which increases the reliability of the cover.

To securely fit in the roller housing, the cover 201 includes at least 2 protrusions or recesses corresponding to the recesses or protrusions on the roller.

Embodiment 3

In this embodiment, a bearing block is provided, comprising the cover 201 described above with the bearing 202 installed therein, and the stuffing box 203.

Embodiment 4

In this embodiment, a conveyor roller is provided, comprising two roller end-mounted bearing blocks as described above.

The embodiments are not limited to the embodiments described here, other embodiments of the utility model will become apparent to a person skilled in the art based on the information set forth in the description and the knowledge of the prior art, which do not go beyond the essence and scope of this utility model.

Elements mentioned in the singular do not exclude the plurality of elements, unless otherwise specified.

The elements of the proposed device are located in a common housing, are structurally and functionally connected to each other through assembly (assembly) operations.

Although the exemplary embodiments have been described in detail and shown in the accompanying drawings, it should be understood that such embodiments are illustrative only and are not intended to limit the wider utility model, and that the utility model should not be limited to the particular arrangements shown and described and designs, as various other modifications may be apparent to those skilled in the art.

Claims (8)

1. A cover for a conveyor roller, containing: - a polymer cylindrical body with a central hole for the axis of the conveyor roller, characterized by the fact that - the outer radius of the cylindrical body corresponds to the radius of the inner space of the conveyor roller body; - on the inner side of the cylindrical body, a cylindrical cavity is made with a height and radius sufficient for tight placement of the stuffing box and bearing, moreover, the cover body is made of polyurethane. 2. A lid as claimed in claim 1, wherein the lid body has a channel from the outside to the inside, the outlet of the channel being deep enough to lubricate the bearing. 3. Cover according to claim 2, in which a grease fitting is installed at the channel inlet. 4. A lid as claimed in claim 3, wherein the grease fitting is installed in a recess in the lid body, the depth of the recess being greater than the height of the raised part of the grease fitting.

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