JP2589473Y2 - Roller or pulley of belt conveyor - Google Patents

Description

[Detailed description of the invention]

[0001]

BACKGROUND OF THE INVENTION The present invention relates to a roller for a belt conveyor in which a plurality of elastic rings for supporting a belt in contact with a loading surface of an endless annular belt for continuously transporting powders, granules and the like are provided. Or it relates to a pulley.

[0002]

2. Description of the Related Art FIGS. 2 and 3 show a basic construction of a belt conveyor, wherein 1 is an endless annular belt mounted on a drive pulley 2 and a tail pulley 3, and 4 is a belt 1 loaded with earth and sand, ore and the like. , A return roller for supporting the belt 1 returning from the drive pulley 2 to the tail pulley 3, a belt tensioning device 6 for adjusting the tension of the belt 1 with a bend pulley 7 and a tension roller 8, and a drive pulley 9. Reference numeral 2 denotes a snap pulley, 10 is a hopper for loading earth and sand, ore, and the like on the belt 1; 11 is an impact carrier roller for absorbing the impact of loading sand, ore, and the like falling from the hopper 10 onto the belt 1; Reference numeral denotes a cleaner that removes deposits such as earth and sand, ore, and the like attached to the loading surface on the front side of the belt 1.

[0003] The belt conveyor thus configured is
The belt 1 is driven to circulate by the drive pulley 2,
The powder, granules and the like loaded on the belt 1 from the hopper 10 are continuously transported to a desired location.

[0004] By the way, the deposits on the belt 1 are removed by the cleaner 12, but when a part of the deposits adheres to the loading surface of the belt 1 and circulates while being accumulated, the return roller 5 and the bend pulley contacting the loading surface of the belt 1. The adhered matter gradually adheres and accumulates on the 7, the pulley 9 and the like (hereinafter referred to as the "roller or pulley 13" (see FIG. 3)), which causes various problems.

[0005] Therefore, rubber,
A plurality of annular elastic rings 14 made of synthetic resin or the like [FIG.
(See (a)) at appropriate intervals to reduce the contact width between the loading surface of the belt 1 and the outer peripheral wall surface of the elastic ring 14, thereby increasing the contact pressure between the belt 1 and the elastic ring 14. At the same time, the waving phenomenon generated on the surface of the elastic ring 14 at the time of high-speed rotation makes it difficult to attach and accumulate deposits on the outer peripheral wall surface of the elastic ring 14.
4 always keeps the outer peripheral wall clean.

[0006]

However, a roller or pulley 1 made of a cylindrical or columnar metal material is used.
If the elastic ring 14 made of rubber, synthetic resin, or the like is simply provided around the elastic ring 3, if the weight of the belt 1 or a force such as a waving phenomenon is applied to the rotating elastic ring 14, the elastic ring 1
There was a problem that the mounting position of No. 4 was shifted.

The present invention has been made in view of such a problem, and provides a belt conveyor roller or pulley which is fixed so that the mounting position of the elastic ring does not shift even when a force is applied to the elastic ring. It is an object.

[0008]

According to the present invention, a thick boss formed on at least the inner peripheral edge of both sides of an elastic ring has an inner diameter substantially equal to the outer diameter of the boss and an inner depth. A flange slightly shallower than the thickness of the boss portion is fitted to a pair of annular butt plates protruding from the outer periphery of the annular disk portion, respectively, and the elastic ring is fastened with a fastener penetrating the butt plate. Is protruded only to the inner peripheral side of the backing plate, and the elastic ring is fixed to the roller or pulley of the belt conveyor.

[0009]

According to the present invention, when the contact plate is fastened to the thick boss provided at the inner peripheral edge of the elastic ring with a fastener, the outer peripheral side and the inner peripheral edge of the inner peripheral edge of the elastic ring having the boss are formed. The amount of protrusion on the peripheral side is larger than that of the elastic ring without the boss portion, and the protrusion of the inner peripheral edge of the elastic ring with the boss portion on the outer peripheral side is prevented by the flange of the backing plate. Since the amount of protrusion of the inner peripheral edge of the elastic ring to the inner peripheral side further increases, the gripping force of the roller or pulley of the elastic ring becomes extremely strong, and the mounting position of the elastic ring does not shift.

[0010]

DESCRIPTION OF THE PREFERRED EMBODIMENTS Embodiments of the present invention will be described below in detail with reference to the drawings.

FIGS. 1A and 1B show the structure of an embodiment of the present invention. The same reference numerals as those in FIGS. 2 to 4 denote the same parts. Is an elastic ring in which both side surfaces of the outer peripheral edge portion are tapered and the parallel both side surfaces of the inner peripheral edge portion are protruded sideways to form a thick boss portion 20a at the inner peripheral edge portion. is there.

Numeral 21 designates a pair of metal-made abutting plates comprising an annular disk portion 21a abutting the side surface of the boss portion 20a of the elastic ring 20 and a flange 21b protruding from the outer periphery of the annular disk portion 21a. The inner diameter of the flange 21b of the backing plate 21 is substantially equal to the outer diameter of the boss 20a of the elastic ring 20, and the depth inside the flange 21b is the boss 2 of the elastic ring 20.
It is slightly shallower than the thickness of 0a.

Reference numeral 22 denotes a boss portion of the elastic ring 20 for the shaft portion.
A bolt 23 penetrates into the through hole 20 b of the “a” and the through hole 21 c of the annular disk portion 21 a of the backing plate 21, and a nut 23 is screwed to the shaft of the bolt 22.

In this embodiment constructed as described above, the contact plates 21 are respectively fitted to both bosses 20a of the elastic ring 20 provided around the roller or the pulley 13 at an appropriate interval, and the shaft of the bolt 22 is formed. Through hole 20b and through hole 21c
When the nut 23 is screwed into the shaft portion of the bolt 22 and tightened, the flange 21 b prevents protrusion of the backing plate 21 to the outer peripheral side, so that the boss portion 20 a of the elastic ring 20 It protrudes greatly only on the inner peripheral side of the backing plate 21. For this reason, the roller or the pulley 13 is gripped very strongly by the inner peripheral wall surface of the elastic ring 20, and the elastic ring 20 is firmly fixed to the roller or the pulley 13.

When a backing plate 21 is applied to the inner peripheral edge of the elastic ring 20 and a nut 23 is screwed into the shaft of the bolt 22 and tightened, the boss 20 of the elastic ring 20 is tightened.
a of the inner peripheral edge of the elastic ring 20 by the thickness of a.
As a result, the protrusion amount of the roller 1 or the pulley 13 by the inner peripheral wall surface of the elastic ring 20 is increased correspondingly.

In the embodiment of the present invention, the elastic ring 20 is used.
In the above description, both side walls of the outer peripheral portion are tapered. However, both side walls of the outer peripheral portion of the elastic ring 20 may be parallel disks.

[0017]

[Effects of the Invention] As described above, according to the present invention,
When the backing plate is fastened to the thick boss provided at the inner peripheral edge of the elastic ring with a fastener, the amount of protrusion of the inner peripheral edge of the elastic ring having the boss to the outer peripheral side and the inner peripheral side is reduced. In addition to the increase in the elastic ring without the boss portion, the protrusion of the inner peripheral edge portion of the elastic ring having the boss portion to the outer peripheral side is prevented by the flange of the backing plate, and the inner peripheral edge portion of the elastic ring is Since the amount of protrusion to the inner peripheral side is further increased, the gripping force of the roller or pulley of the elastic ring becomes very strong, so that there is an effect that the mounting position of the elastic ring does not shift.

[Brief description of the drawings]

FIG. 1A is a perspective view showing a configuration of one embodiment of the present invention, and FIG. 1B is a cross-sectional view showing a configuration of one embodiment of the present invention.

FIG. 2 is a basic configuration diagram of a belt conveyor.

FIG. 3 is a cross-sectional view showing a structure for attaching a roller or a pulley to a spar.

FIG. 4A is a front view in which a part of a roller or a pulley to which an elastic ring is attached, and FIG. 4B is a side view of the roller or the pulley to which an elastic ring is attached.

[Explanation of symbols]

 Reference Signs List 1 belt 5 return roller 7 bend pulley 9 snap pulley 13 roller or pulley 20 elastic ring 20a boss portion 21 backing plate 21a annular disk portion 21b flange 22 bolt (fastener) 23 nut (fastener)

Continuation of the front page (56) References JP-A-3-216411 (JP, A) JP-A-57-8944 (JP, U) JP-A-59-183417 (JP, U) JP-A-57-191715 (JP, U) , U) Japanese Patent Publication No. 36-20153 (JP, B1) Japanese Utility Model No. 51-12854 (JP, Y2) Japanese Utility Model No. 37-9819 (JP, Y1) Japanese Utility Model No. 44-22005 (JP, Y1) Field surveyed (Int.Cl. ⁶ , DB name) B65G 39/071

Claims (1)

(57) [Scope of request for utility model registration] 1. A roller or pulley of a belt conveyor provided with a plurality of elastic rings that support a belt in contact with a loading surface of an endless annular belt that continuously conveys powders, granules, etc., At least one thick boss formed on at least the inner peripheral edge of both sides of the ring has a flange whose inner diameter is substantially equal to the outer diameter of the boss and whose inner depth is slightly smaller than the thickness of the boss. A pair of annular butt plates protruding from the outer periphery of the disk portion are fitted respectively, and tightened with a fastener penetrating the elastic ring and the butt plate, whereby the inner peripheral edge of the elastic ring is brought into contact with the butt plate. A roller or a pulley of a belt conveyor, wherein the elastic ring is fixed so as to protrude only to the inner peripheral side of the belt.