KR100584314B1 - Roller for belt conveyer - Google Patents

Abstract

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a belt conveyor roller, and more particularly, to a belt conveyor roller in which a drum which is supported on a support shaft and rotates is formed of a resin material.

The belt conveyor roller according to the present invention is a belt conveyor roller for supporting a conveyor belt, provided that both ends of the support shaft are inserted into the support shaft and the hollow formed in the axial direction, and coupled to each of both ends of the support shaft. A pair of first bushes, each of the pair of first bushes is inserted into each inner ring, a pair of bearings coupled to each of the first bushes, and an outer ring of each of the bearings is inserted into the hollow formed in the axial direction. And a pair of second bushes coupled to each of the bearings, and each of the second bushes is inserted into each of the hollow inlet openings formed in the axial direction in the center thereof, and resin drums having both ends coupled to each of the second bushes. Characterized in that it comprises a.

Belt conveyor, roller

Description

Roller conveyor for belt conveyors {ROLLER FOR BELT CONVEYER}

1 is an exploded perspective view showing a belt conveyor roller according to an embodiment of the present invention

Figure 2 is a perspective view showing a roller for a belt conveyor according to an embodiment of the present invention

3 is a cross-sectional view showing a roller for a belt conveyor according to an embodiment of the present invention.

Figure 4 is a perspective view showing the support shaft of the belt conveyor roller according to an embodiment of the present invention

5 is a perspective view illustrating a first bush of a roller for a belt conveyor according to one embodiment of the present invention;

Figure 6 is a perspective view showing a bearing of the roller for a belt conveyor according to an embodiment of the present invention

7 is a perspective view showing a second bush of the roller for a belt conveyor according to an embodiment of the present invention;

8 is a perspective view showing a drum of the roller for a belt conveyor according to an embodiment of the present invention.

9 is a cross-sectional view showing a roller for a conventional belt conveyor.

<Short description of the major reference symbols>

30 Drum 31 Second groove

40 Support shaft 41 First groove

50 2nd bush 51 2nd cover

52 The Second Jam 53 The Third Jam

60 Bearing 70 First Bushing

71 First Jam 72 First Cover

The present invention relates to a roller for a belt conveyor, and more particularly, to a belt conveyor capable of coupling drums of various diameters to a support shaft of a predetermined diameter by inserting a bushing into a resin drum and a support shaft and coupling a bearing therewith. It is about a roller.

In a belt conveyor system, the conveyor belt is supported and driven by a roller.

9 is a sectional view showing a conventional belt conveyor roller.

Referring to the drawings, the conventional belt conveyor roller is composed of a drum (20) rotatably supported by a bearing (23) on a support shaft provided on a predetermined support member (25). In general, the drum 20 is a steel plate bent in the shape of a pipe to weld the joint portion, the bearing support member bent in the axial direction is inserted into the both sides inlet of the drum 20 and both sides of the drum 20 It is formed by welding the joint of the inlet edge and the edge of the bearing support member. The drum 20 formed as described above inserts and couples each of the pair of bearings 23 in which the support shaft is inserted and coupled to the inner ring at each side inlet of the bearing support member, and the hard plate so that the bearing 23 is not separated. (22) is fixed to the bearing support member and rotatably supported by the support shaft.

The belt conveyor roller as described above is subjected to the load of the object to be transported on the belt and the impact load generated by the transport of the object. Such an impact causes breakage of the bearing for rotationally supporting the drum so that the roller does not rotate well. If the rollers do not rotate well, not only will the belt conveyor system break down, such as cutting the belt, but also the heat caused by the friction between the belt conveyor roller and the belt that does not rotate well will result. Therefore, the belt conveyor roller should not only be installed so that the roller rotates well, but also be installed so that the bearings and the like are not easily broken.

However, in the conventional belt conveyor roller, since the drum itself is formed by welding an iron plate, the drum itself is thermally deformed, so that the trajectory of the drum's outer circumferential surface is moved up and down. As a result, the rollers are subjected to impact loads in the up and down direction, and the bearings are easily broken.

In addition, the conventional belt conveyor roller is welded for coupling the drum and the bearing support member, so that the drum and the bearing support member are thermally deformed, so that the bearing inserted and coupled to the bearing support member is coupled to the support shaft and centered. The axis will not coincide with the central axis of the support shaft. Accordingly, the bearing has a problem that the bearing is easily broken by the up, down, left, right swing and torsional force.

In addition, the conventional belt conveyor roller has a disadvantage that manufacturing and assembly is difficult because the bearing support member to which the bearing is coupled is welded to the drum.

In addition, the conventional belt conveyor roller has a problem that the bearing is easily damaged due to the force in the axial direction by thermal expansion of the drum in the axial direction by friction between the drum and the belt.

In addition, the conventional belt conveyor roller has a problem that the bearing is easily broken due to the penetration of dust or moisture into the bearing.

The present invention is to solve the above problems, an object of the present invention is to form a drum made of a resin material so that the drum itself is not deformed by forming a trajectory in which the outer peripheral surface of the drum does not swing up and down by rotation to generate a shock load To provide a belt conveyor roller that does not easily break the bearing.

In addition, another object of the present invention is to insert the bush into each of the drum formed of the support shaft and the resin material and to couple the bearing therebetween, the center axis of the bearing coincides with the center axis of the support shaft, thereby preventing damage to the bearing. It is to provide a roller for a belt conveyor.

Still another object of the present invention is to provide a belt conveyor roller that is simple to manufacture and assemble by simply inserting a bush into a drum and a support shaft, and inserting a bearing into the bush.                         

In addition, another object of the present invention is to increase the width of the bush than the width of the bearing, when the drum is thermally expanded in the axial direction, the bearing is slid in the axial direction to prevent the bearing from being damaged by the axial force is not applied to the bearing. It is to provide a roller for a belt conveyor.

It is still another object of the present invention to provide a belt conveyor roller which does not penetrate dust or moisture into a bearing by forming a cover in the bush.

In order to achieve the above object, the belt conveyor roller according to the present invention includes a belt conveyor roller for supporting a conveyor belt, wherein both ends of the support shaft are inserted into the support shaft and the hollow formed in the axial direction. A pair of first bushes coupled to each of both ends of the support shaft, a pair of first bushes inserted into each inner ring, and a pair of bearings coupled to each of the first bushes, and hollow formed through the axial direction The outer ring of each bearing is inserted into the pair of second bushes coupled to each of the bearings, and each of the second bushes is inserted into each of the hollow inlet openings formed in the center in the axial direction. Both ends are characterized in that it comprises a drum of resin material bonded to each other.

The belt conveyor roller according to the present invention is characterized in that the first bush and the second bush are made of a resin material.

In addition, the belt conveyor roller according to the present invention, each of the first bushing extends in a axial direction inwardly from the inner inlet edge of each hollow so that the projection at each end of the extended portion in the radial direction At least one first catching piece protruding toward a radial center is provided, and a first recess for receiving and catching a protrusion formed at an end of the first catching piece is formed on an outer surface of the support shaft, and each of the second bushes At least one second catching piece is provided which extends in a axial direction inwardly from the outer circumferential surface inwardly, and at each end of each of the extended portions, a projection protruding radially in the opposite direction to the center of the radius. On the inner circumferential surface there is a second groove for receiving and catching the projection formed on the end of the second locking piece Characterized in that formed.

In addition, in the belt conveyor roller according to the present invention, each of the second bushes is formed such that the width of each hollow is greater than the width of the outer ring of each bearing, the outer surface of each of the bearing and each of the second bush Between the inner surface of the hollow is characterized in that the outer ring of each bearing is inserted into the hollow of each of the second bush so as to be able to slide in the axial direction of the support shaft.

In addition, the belt conveyor roller according to the present invention has a predetermined length extending inward in the axial direction from each of the hollow inner inlet edges of each of the second bushes, so that projections at the ends of each of the extended portions are radially. At least one third catching piece protruding toward the radial center is provided.

In addition, the belt conveyor roller according to the present invention, in each of the first bush extends a predetermined length in the radial direction from the outer peripheral surface of the bearing in the opposite direction of the radial center from the outer side where the bearing is located and axial direction from the extended portion An annular first cover extending in a predetermined length toward the inner side thereof, and each of the second bushes has an outer end in an axial direction from each outer end such that its respective end portion is positioned inside surrounded by the distal end of the first cover. Towards the second cover of the annular formed extending a predetermined length is characterized in that it is provided.

In addition, in the belt conveyor roller according to the present invention, the radius of the outer circumferential surface increases as the first cover proceeds inward in the axial direction, and the radius of the outer circumferential surface increases as the second cover proceeds outward in the axial direction. It is characterized in that formed to.

Hereinafter, a belt conveyor roller according to the present invention will be described in detail with reference to the embodiment shown in the drawings.

1 is an exploded perspective view showing a belt conveyor roller according to an embodiment of the present invention, Figure 2 is a perspective view showing a belt conveyor roller according to an embodiment of the present invention, Figure 3 is a view of the present invention It is sectional drawing which shows the roller for belt conveyors which concerns on an Example.

Referring to the drawings, the belt conveyor roller according to an embodiment of the present invention includes a support shaft 40, the first bushing 70, the bearing 60, the second bushing 50 and the drum 30. . The belt is supported and moved to the belt conveyor roller.

4 is a perspective view showing a support shaft 40 of the roller for a belt conveyor according to an embodiment of the present invention.

Referring to the drawings, the support shaft 40 is for supporting the drum 30 in rotation and is supported at both ends by a support member (see FIG. 9) of the belt conveyor system. Both ends of the support shaft 40 are inserted into each of the pair of first bushes 70 so that the first bushes 70 are coupled to the support shaft 40. In particular, a first recess 41 is formed on an outer circumferential surface of each of both ends of the support shaft 40 to receive and latch the protrusion 71a formed at the end of the first catching piece 71 of the first bushing 70. do. Accordingly, the first bushing 70 coupled to the support shaft 40 does not fall out.

5 is a perspective view illustrating a first bushing 70 of a roller for a belt conveyor according to an embodiment of the present invention.

Referring to the drawings, the first bushing 70 is a cylindrical body having a hollow in the center thereof in the axial direction, and each of the both ends of the support shaft 40 is inserted into the hollow, one at each of both ends of the support shaft 40. Combined. The first bushing 70 is preferably formed of a resin material like the drum 30.

As described above, the first bushing 70 is provided with at least one first catching piece 71 so that both ends of the support shaft 40 are inserted into the hollow of the first bushing 70 and are not removed. The first catching piece 71 extends in a axial direction from the inner inlet edge of the hollow of each of the first bushes 70 inward in the axial direction, so that the projections 71a are radially in each end of the extended portion. It protrudes toward the radial center. In particular, when the first catching piece 71 inserts the support shaft 40 into the hollow of the first bushing 70, the protrusion 71a of the first catching piece 71 supports the support shaft 40. When a force is applied to the opposite direction of the radial center in contact with the outer circumferential surface of the ()) is deformed toward the opposite direction of the radial center, the projection 71a of the first locking piece 71 is accommodated in the first groove 41 Has elasticity to return to its original state.

In addition, the first bush 70 is provided with an annular first cover 72 for preventing the penetration of dust and water together with the second cover 51 described below. The first cover 72 extends in a radial direction from the outer circumferential surface of the bearing 60 in the radial direction to the opposite direction of the radial center and extends a predetermined length inward in the axial direction from the extended portion. Is formed. In particular, the first cover 72 is formed such that the radius of the outer peripheral surface increases as it proceeds inward in the axial direction. That is, the outer circumferential surface of the first cover 72 is formed to be inclined downward to the outside, so that the water droplets falling on the outer circumferential surface of the first cover 72 flow outward along the outer circumferential surface, so that the bearing 60 is located inwardly. Will not flow. The inclination of the outer circumferential surface of the first cover 72 is preferably formed to have an inclination angle of about 10 degrees with respect to the central axis.

Figure 6 is a perspective view showing a bearing of the roller for a belt conveyor according to an embodiment of the present invention.

Referring to the drawings, the bearing 60 is for coupling the support shaft 40 and the drum 30 so as to be relatively rotatable with each other in a radial direction by the load of an object applied to the drum 30. Radial bearings are generally used because of their high force. The bearing 60 is installed between the first bushing 70 and the second bushing 50. That is, the first bushing 70 is inserted into the inner ring of the bearing 60, and the outer ring is inserted into the hollow of the second bushing 50.

7 is a perspective view illustrating a second bush of the roller for a belt conveyor according to an embodiment of the present invention.

Referring to the drawings, the second bush 50 is a cylindrical body in which a hollow penetrates in the axial direction, and an outer ring of each of the bearings 60 is inserted into the hollow and coupled to each of the bearings 60. The second bush 50 is preferably formed of a resin paper similar to the first bush 70.

As described above, the drum 30 is thermally expanded by friction with the belt, which causes the bearing to receive a large force in the axial direction. As described above, when the bearing is subjected to a large force in the axial direction, the bearing is easily broken. The present invention is characterized in that the amount of deformation due to thermal expansion of the drum is absorbed by the slip generated relatively between the bearing 60 and the second bush 50. Referring to the drawings, each of the second bushes 50 is formed such that the width of the hollow into which the bearing 60 is inserted is larger than the width of the outer ring of each of the bearings 60, and the outer ring of each of the bearings 60. An outer ring of each of the bearings 60 is inserted into the hollow of each of the second bushes 50 so as to be axially slidable between an outer surface of the second bush 50 and an inner surface of the hollow of each of the second bushes 50. Accordingly, when the expansion of the drum 30 is expanded, the second bush 50 is moved outward in the axial direction while sliding relatively with the bearing 60 coupled to the first bush 70. In addition, when the drum 30 is contracted, the second bush 50 is slid to the bearing 60 and moved inward in the axial direction.

On the other hand, each of the second bushing (50) at least one or more third engaging piece (53) for catching the outer ring of the bearing (60) so that the bearing 60 is not separated from the hollow of the second bush (50) Is provided. The third catching piece 53 extends in a axial direction from the inner inlet edge of the hollow of each of the second bushes 50 inward in the axial direction, so that the projections 53a at the ends of each of the extended portions are radially. It protrudes toward the radial center. In particular, when the third engaging piece 53 inserts the inner ring of the bearing 60 into the hollow, the protrusion 53a of the third engaging piece 53 fits the outer circumferential surface of the inner ring of the bearing 60. When it comes in contact with a force in the opposite direction of the radial center, it is elastic to deform and recover in the opposite direction of the radial center.

The second bush 50 is inserted into the hollow of the drum 30 and coupled to the drum 30. In particular, a second locking piece is inserted into the hollow of the drum 30 in the second bush 50 so as to be accommodated in the second recess 31 formed in the hollow of the drum 30 so as not to be separated from the hollow. 52 is provided. The twenty-fourth engaging piece 52 extends in a axial direction from the inner circumferential edge of each of the second bushes 50 inward in the axial direction such that the projection 52a is radially centered at the end of each of the extended portions. Protruding towards the opposite direction of the formed. In particular, when the second catching piece 52 inserts the second bushing 50 into the hollow of the drum 30, the protrusions 52a of the second catching piece 52 are formed on the drum 30. When the force is received toward the radial center by contacting the inner circumferential surface of the hollow, it is deformed toward the radial center and is elastically restored to its original state when the projection 52a of the second catching piece 52 is received in the second recess 31. Have

On the other hand, the second bush 50 is provided with an annular second cover 51 for sealing to prevent the penetration of water, dust, etc. into the bearing is installed with the first cover 72. The second cover 51 is formed to extend in a axial direction outward from the outer end of each of the second bush 50 so that each end portion is located inside surrounded by the end portion of the first cover 72. . As described above, since the distal end of the second cover 51 is positioned inside the distal end of the first cover 72 and overlaps with each other to some extent, dust, moisture, and the like are prevented from penetrating from the outside. In particular, the outer circumferential surface of the second cover 51 is formed to increase in radius as it proceeds outward in the axial direction. That is, the outer circumferential surface of the second cover 51 is formed to be inclined downward inwardly, so that the water droplets falling on the outer circumferential surface of the second cover 51 flow along the outer circumferential surface, so that the bearing 60 is located inside. Water droplets do not flow. It is preferable that the inclination of the outer circumferential surface of the second cover 51 is formed at about 3 ° with respect to the central axis.

8 is a perspective view illustrating a drum of a belt conveyor roller according to an embodiment of the present invention.

Referring to the drawings, the drum 30 is a cylindrical body of resin material having a hollow penetrating through the center thereof, and each of the second bushes 50 is inserted into each of the inlets of each of the hollows so that both ends of each of the second bushes 50 are inserted. Is combined. As described above, in the present invention, the drum 30 is formed of a resin material, so that welding is not required as in the prior art. On the hollow inner circumferential surface of the drum 30, a second groove 31 for receiving and catching a projection formed at the end of the locking piece 52 of the second bush 50 is formed in an annular shape.

The belt conveyor roller according to the present invention having the configuration as described above does not deform by rotating the drum itself by forming the drum with a resin material so that the outer circumferential surface of the drum does not swing up and down so that no impact load is generated. This has the advantage of not being easily broken.

In addition, in the belt conveyor roller according to the present invention, the bush is inserted into each of the drums formed of the support shaft and the resin material, and the bearings are coupled therebetween so that the bearings thereof have their center axes coincide with the center axes of the support shafts. This has the advantage of being prevented.

In addition, the belt conveyor roller according to the present invention has a simple production and assembly by simply inserting a bush in the drum and the support shaft and inserting the bearing in the bush.

In addition, in the belt conveyor roller according to the present invention, the width of the bush is larger than the width of the bearing, so that when the drum is thermally expanded in the axial direction, the bearing is slid in the axial direction so that the bearing does not take the axial force to prevent the bearing from being damaged. Has the advantage.

In addition, the belt conveyor roller according to the present invention has the advantage that dust or moisture does not penetrate into the bearing by forming a cover in the bush.

The belt conveyor roller described above and shown in the drawings is only one embodiment for carrying out the present invention, and should not be interpreted as limiting the technical idea of the present invention. The scope of protection of the present invention is defined only by the matters set forth in the claims below, and the embodiments improved and changed without departing from the gist of the present invention will be apparent to those skilled in the art. It will be said to belong to the protection scope of the present invention.

Claims (7)

A belt conveyor roller for supporting a conveyor belt, comprising: a support shaft, a pair of first bushes inserted at both ends of the support shaft into a hollow formed in the axial direction, and coupled to each of both ends of the support shaft, and respective inner rings A pair of bearings inserted into each of the pair of first bushes and coupled to each of the first bushes, and a pair of outer rings of the bearings inserted into the hollow formed in the axial direction and coupled to each of the bearings Each of the second bush and the first bush extends a predetermined length inwardly in the axial direction from the inner edge of the hollow, and at least one first catching protrusion is formed at the end of each of the extended portions to protrude radially toward the center of the radius in the radial direction. Is provided with a piece, the outer surface of the support shaft is formed with a first groove for receiving and catching the projection formed on the end of the first locking piece , Each of the second bushes is inserted into each of the hollow inlet openings formed in the axial direction at the center thereof, and both ends of the second bushes are coupled to each of the second bushes , and the second bush is axially inward from the inner edge of each outer circumferential surface thereof. At least one second catching piece having a predetermined length extending and protruding at a distal end of each of the extended portions is provided with a protrusion protruding radially in a radial direction in the opposite direction, and a second protrusion for receiving and catching a protrusion formed at the end of the second catching piece. Grooves are formed , wherein the first bushing and the second bushing comprises a drum of resin material. delete delete The method of claim 1, Each of the second bushes is formed such that the width of each hollow is greater than the width of the outer ring of each bearing, A belt characterized in that the outer ring of each bearing is inserted into the hollow of each of the second bushes so as to be able to slide in the axial direction of the support shaft between the outer surface of the outer ring of each of the bearings and the inner surface of the hollow of each of the second bushes. Roller for conveyors. The method of claim 4, wherein At least one third of each of the second bushes extends in a axial direction inward from the inner inlet edge of each hollow such that a projection at each end of the extended portion protrudes radially toward the radial center in the radial direction. The belt conveyor roller, characterized in that the engaging piece is provided. The method according to any one of claims 1, 4 or 5, Each of the first bushes has an annular first extending from the outer circumferential surface of the bearing in a predetermined length in a radial direction from the outer circumferential surface toward the opposite direction of the radial center and extending in a axial direction inward from the extended portion. A cover is provided, and each of the second bushes is provided with an annular second cover extending in a axial direction outwardly from each of the outer ends so that each end portion is positioned inside surrounded by the distal end of the first cover. The belt conveyor roller, characterized in that. The method of claim 6, As the first cover proceeds inward in the axial direction, the radius of the outer circumferential surface is increased, The second cover is a conveyor belt roller, characterized in that the radius of the outer circumferential surface is formed to increase toward the outside in the axial direction.

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