WO2018093287A1

WO2018093287A1 - Conveyor roller

Info

Publication number: WO2018093287A1
Application number: PCT/RU2016/000805
Authority: WO
Inventors: Никита Александрович НАУМОВ
Original assignee: Общество с ограниченной ответственностью Глобал Смарт Прожект (ООО "Джи Эс Пи")
Priority date: 2016-11-16
Filing date: 2016-11-23
Publication date: 2018-05-24
Also published as: RU2640497C1

Abstract

A conveyor roller comprises a hollow cylindrical body, in which a shaft and a bearing assembly are disposed. The shaft is disassemblable and is configured in the form of a central adapter sleeve which is detachably connected to two end shafts, on which the bearings of a bearing assembly are fastened. The bearing assembly is provided with a main adapter in the form of a cylindrical member with a through opening, which is tightly seated inside the body. The inside surface of the cylinder of the main adapter has a variable diameter to allow the fastening of a bearing and a sealing member therein. The sealing member is seated with a tight fit in the main adapter. This provides the possibility of replacing individual structural elements of the roller and of incorporating a bearing assembly of any standard size in the roller.

Description

CONVEYOR ROLLER

The claimed invention relates to the field of hoisting and transport engineering, namely to rollers used as roller bearings for belts and conveyor belts, and can be used in coal, metallurgy, mining, construction, energy industries (as well as ore dressing and non-ore materials, mining, transportation and sorting of goods and cargo, etc.)

State of the art

Various structural solutions for conveyor rollers are known from the prior art. So, for example, from the patent of the Russian Federation N ° 2278069 known roller containing a hollow cylindrical housing, an axis with bearings and sealing elements placed inside the glasses installed in the ends of the housing. The sealing elements are made in the form of a pack of rings of elastically deformable, different in density porous material containing a lubricating fluid. Sealing elements are mounted on an axis having a wave-like surface shape in longitudinal section at their landing site. The bottoms of the glasses are facing out. The glasses have locking rings on the axis and fasteners mounted on the seating surface of the contact between the glass and the roller housing.

A conveyor roller is also known from RF patent 2244670, the casing of which is made of secondary composite polymer material with wood filler in an amount of 10-50% of the total weight of the mixture. On the inner surface, the housing has stiffening ribs evenly spaced around the circumference, identical to the stiffening ribs made on the outer surface of the roller axle box, which is internally reinforced with a metal sleeve into which the corresponding bearing is pressed. The axle box is made of a mixture of a secondary composite polymer material of the polyamide type with secondary polyethylene in an amount of 10-20% of the total weight of the mixture. At its end facing the inside of the roller body, a three-channel labyrinth seal with a pocket for lubrication is made, and an annular groove of a trapezoidal section is made at its opposite end. Said labyrinth seal is made of recycled polymeric material and has a sleeve with an annular trapezoidal collar. The labyrinth seal sleeve has annular protrusions and trapezoidal cavities on the surface facing the roller cover, which are arranged with the possibility of a clearance for lubrication.

In the above constructions of conveyor rollers, the shafts are made integral, in the form of a single non-separable part. In addition, the known rollers are structurally made of a specific size and do not have the ability to adapt them to other sizes.

Closest to the claimed technical solution is the conveyor roller described in RF patent N22357911. The roller includes a housing with cantilever pins on which bearing assemblies are mounted, consisting of a housing, a bearing and a sealing device containing an installation sleeve, a sleeve with a flange, a membrane washer secured by the outer part between the installation sleeve and the outer race of the bearing, and the inner part in contact with it inner ring, closed cavity, filled with grease. The sealing device contains a sleeve with a shoulder, resting on the end surface of the outer race of the bearing and in contact with the inner surface of the housing of the bearing assembly, the shoulder located on the side of the housing of the roller and fixes the upper part of the second second membrane washer, which on the other hand is rigidly fixed by the installation sleeve parallel to the first the membrane washer and the inner part rests on the end part of the sleeve with the flange, while the latter divides the formed between the membrane washers bami cavity filled with grease, in two parts.

The disadvantages of this technical solution is the presence of cantilevered trunnions, which, according to the voltage diagram, concentrate the load in a larger quantity. In addition, the use of a non-separable shaft significantly increases the weight of the product, and also does not provide the possibility of its use for rollers of various sizes and diameters, while the length of the roller is increased, which reduces the strength of the roller support, and also leads to an increase in the consumption of materials and dimensions of the roller support.

Disclosure of invention

The task to which the claimed technical solution is directed is to create a conveyor roller design that enables its disassembly to replace the bearing and roller assemblies, as well as unification for any size.

The technical result achieved when using the claimed invention is to provide the possibility of replacing individual structural elements of the roller by making it collapsible, as well as providing the possibility of embedding the bearing assembly in the rollers of any size. s The problem is solved in that in the conveyor roller containing a hollow cylindrical housing, a shaft made with the possibility of placing inside the housing at least one bearing assembly mounted on the shaft and including a bearing and a sealing element, according to the technical solution, the bearing assembly is provided a base adapter, which is a cylindrical part with a through hole, made with the possibility of tight placement inside the sleeve, while the inner surface of the cylinder of the base transition The nickname is made with a varying diameter for fixing the bearing and the sealing element in it, while the shaft is collapsible and is a central hub - an adapter, coupled by means of a detachable connection with two end axes on which the bearings of the bearing assembly are fixed, and the sealing element is located in the base adapter with a tight fit. The inner surface of the cylinder of the base adapter may have a stepped profile for changing diameter. The sealing element can be made in the form of a single monolithic part or composite of at least two mating parts, one of which performs the function of protecting the bearing and the other a sealing function, while the outer surface of the second part has a stepped profile corresponding to the profile of the inner surface cylinder base adapter to ensure a tight fit of the sealing element in the base adapter. The roller may further comprise an external adapter that is tightly mounted in the cylindrical housing of the roller and interfaced with the base adapter, while the external adapter is made in the form of a hollow cylinder with an external diameter corresponding to the inner the bore diameter of the cylindrical body, and the inner diameter corresponding to the outer diameter of the cylinder of the base adapter. The detachable connection of the sleeve - adapter and the shaft end axes is made in the form of a latch mounted on the adapter and / or end axes. A central hole is made in the cover of the sealing element to accommodate and fix the end axis of the roller.

The inventive conveyor roller is illustrated by the following drawings, where

Figure 1 schematically shows a conveyor roller in an exploded state;

The positions in the drawings indicate:

1- Case,

2- Shaft

3- Bearing unit

4- Bearing,

5- Sealing element (wiper and seals),

6- Basic adapter,

7- End axes,

8- External adapter,

9- Universal housing element,

10- Circlip (circlip).

The inventive conveyor roller is a prefabricated structure made using polymeric materials. The roller contains a cylindrical housing 1 (single or made of several elements), inside which the shaft of the roller 2 and the bearing assemblies fixed on it are placed 3. The housing is made of lightweight polymer wear-resistant material, for example polyamide, nylon, polyethylene, polyurethane. The roller shaft is made collapsible and consists of a central sleeve - an adapter, coupled by means of a detachable connection with two end axles 7, on which the bearings of the bearing assembly are located. The sleeve may be made of reactive plastic polymers. The end axes are made of a sufficiently hard material that provides the roller with a load of up to 20 tons, for example, polyacetal, polyurethane, caprolon (polyamide), cermet, metal polymer, modified polymer, bimetal, or metal alloys. The detachable connection can be made in the form of clamps mounted on the adapter or end axes. As such clamps, studs, clamps, magnets, glues, latches, locks or bolted joints can be used.

A bearing 4 is fixed on each of the end axes, which together with the locking element 10, the sealing element 5 and the base adapter 6 forms a bearing assembly 3. The sealing element can be made:

- in the form of a single monolithic part that provides, on the one hand, a protective function, protecting the bearing from dust, at the same time, providing the ability to trap aqueous, dispersed, solid, aerosol, and other substances and media that affect the performance of the bearing, and on the other hand, the sealing function, tightly fixing the bearing assembly inside the housing; a form of execution of the outer surface of the sealing element is not the subject of the present invention.

- composite, in the form of at least two mating parts, each of which performs either a protective or sealing b function. Parts are interconnected, for example, through a labyrinth connection.

The sealing element may be made of a polymer, ceramic material, as well as in the form of a metal part.

The inventive roller also contains a basic adapter 6, which provides the possibility of embedding bearing assemblies of the same size in the housing of the rollers of various diameters. The base adapter 6 is a cylindrical part with a through hole, made with the possibility of tight placement inside the sleeve of the housing. The outer surface of the base adapter is made corresponding to the inner surface of the housing sleeve for more tight connection. So, in the case of the inner surface of the sleeve of the casing being smooth-walled, the outer surface of the base adapter is also made smooth with a corresponding diameter. The inner surface of the cylinder of the base adapter is made with a varying diameter for fixing the bearing and seals in it. Changing the diameter may have a stepped profile, which facilitates the assembly and disassembly of the claimed device, and also have, for example, a conical profile, which will allow the use of bearings of various sizes for use in one basic adapter.

So, in the case of a stepped profile of the inner surface of the adapter, one of the steps is designed to accommodate the bearing in it, and the subsequent ones - for tight placement of the sealing element (or its individual parts, if the sealing element is composite).

If necessary, use an additional (external) adapter, providing the ability to embed a bearing assembly with a basic adapter in a housing with a diameter, exceeding the diameter of the base adapter. The external adapter is an additional cylindrical spacer located between the base adapter and the housing sleeve.

The inventive roller is made as follows.

The roller housing is made, for example, by molding thermoplastic polymers or by machining the housing sleeve on a lathe and / or thermoplastic machine. Then prepare the overall and landing dimensions of the roller. Bearing assemblies are assembled by installing bearings located on the end axles in the base adapters and fixing them (bearings) with locking elements, they fix the end axes to the central shaft sleeve. Tightly install the structure in the roller casing and close the end parts of the roller with sealing elements.

Thus, the assembly produces a roller used in conveyor systems.

The roller is different

- reduced weight due to the use of polymeric materials of its constituent elements and assemblies,

- collapsible - which will allow in case of failure to replace only the bearing, or the bearing assembly containing the bearing mounted on the end axis, or elements of the roller, and not the entire roller as a whole,

- universality - due to the use of a basic adapter in the design, with the help of which it is possible to integrate the same bearing units into roller casings of various diameters.

The collapsibility of the structure in this case also gives additional advantages in the form of a reduction in inventory costs when using different sizes of rollers, where when changing the diameter of the roller, only a few elements need to be replaced, and not the entire roller.

Concrete example

In accordance with the invention, a conveyor roller is manufactured for use in the transport system of an enrichment plant or mine. The roller contains a cylindrical housing with a diameter of 133 mm and a length of 465 mm made of modified polymers, in this case, polyamide. A composite collapsible shaft is placed inside the housing, consisting of an aluminum sleeve 320 mm long and two end axles made of polyacetal, on each of which a bearing of type 180306 with dimensions of 72x30x19 mm is fixed. The end axes are fixed to the sleeve using a bolted connection. The roller also contains two basic adapters, which make it possible to integrate bearing units with a bearing diameter of 72 mm into a housing with a diameter of 133 mm. Bearings of the bearing units are located in the steps of the basic adapters and are fixed by circlips and sealing elements made of polyurethane. The sealing elements are made of two parts connected by means of a labyrinth connection. There is no need for an external adapter in this design. However, in order to be able to integrate the manufactured bearing assembly into a housing with a diameter of 140 mm, two external adapters are manufactured. So, if it is necessary to replace the bearing, the shaft is disassembled in the manufactured roller, untwisting the bolt connection, the bearing assembly is removed from the housing and the bearing is removed from the base adapter. Then change the bearing and reassemble the roller, leaving, thereby, most of the elements of the roller unchanged.

Claims

CLAIM

1. The conveyor roller, containing a hollow cylindrical housing, and placed in the housing shaft and mounted on the shaft, at least one bearing assembly, comprising a bearing and a sealing element, characterized in that

- the bearing unit is equipped with at least one base adapter, which is a cylindrical part with a through hole, made with the possibility of tight placement inside the housing, while the inner surface of the cylinder of the base adapter is made with a varying diameter to allow the bearing and the sealing element to be fixed in it ,

- the shaft is made collapsible and represents a central sleeve - an adapter, coupled through a detachable connection with two end axes on which the bearings of the bearing assembly are fixed,

- the sealing element is placed with a tight fit in the base adapter.

2. The conveyor roller according to claim 1, characterized in that the inner surface of the cylinder of the base adapter has a step profile of diameter change.

3. The conveyor roller according to claim 2, characterized in that the sealing element is made in the form of a single monolithic part or composite of at least two conjugated parts, one of which is designed to protect the bearing, and the other is the bearing seal, while the outer the surface of the second part has a stepped profile corresponding to the profile of the inner the surface of the cylinder of the base adapter to ensure a tight fit of the sealing element in the base adapter.

4. The conveyor roller according to claim 1, characterized in that it further comprises an external adapter that is tightly mounted in the cylindrical roller housing and mated to the base adapter, while the external adapter is made in the form of a hollow cylinder with an external diameter corresponding to the inner bore diameter of the housing sleeve , and an inner diameter corresponding to the outer diameter of the cylinder of the base adapter.

5. The conveyor roller according to claim 1, characterized in that the detachable connection of the sleeve-adapter and the shaft end axes is made in the form of a connection-retainer fixed to / in the adapter and / or end axes.

6. Conveyor roller according to claim 3, characterized in that a central hole is made in the sealing element to accommodate and fix the end axis of the roller.