JP2586488Y2 - Carrier roller for belt conveyor - Google Patents

Description

[Detailed description of the invention]

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a carrier roller in a belt conveyor for conveying a raw material containing fine powder such as iron ore.

[0002]

2. Description of the Related Art Conventionally, in a belt conveyor 11 for carrying a raw material 10 composed of a lump, a granular material or a mixture thereof, a three-piece carrier roller 12 as shown in FIG.
Was used. As shown in FIG. 6, the carrier roller 12 has housings 16 mounted on both sides of a roller pipe 15 and bearings 17 mounted in the housing 16.
The support shaft 18 is attached to the carrier stand 19 on both sides, and the roller pipe 15 is rotatably supported. And, the bearing 17
Labyrinths 20 and 21 for housing 1
6, an inner cover 22, an outer cover 23, and a sealing ring 24 are provided inside and outside the housing 16.

[0003]

However, as shown in FIG. 5, the raw material (eg, iron ore) 1 on the conveyor belt 25
When 0 transfers to the next belt conveyor, shoot 2
Skirt rubber 2 fixed to skirt 27 at six ends
The raw material 10 overflows from the eight portions and falls, or the raw material 10 is clogged by the chute 26 and overflows from the upper part of the chute 26 and falls, and the fine powder in the raw material 10 travels through the housing 16 outside the carrier roller 12 and passes through the outer cover 23. Of the bearing 17 and the outer periphery of the housing 16 and the outer cover 23 to reach the bearing 17, hinder the rolling of the bearing 17 and cause seizure, and finally make the bearing 17 unrotatable. , The rotation of the roller pipe 15 is stopped. As described above, as a result of the conveyor belt 25 continuing to move with the carrier roller 12 stopped rotating, the roller pipe 15 is unevenly worn, and the upper portion of the roller pipe 15 is broken. In addition, it takes 20 minutes to replace a damaged carrier roller by four people, and if the belt conveyor 11 becomes long, the number of places for installing the carrier roller 12 becomes hundreds, and the man-hour required for replacement becomes enormous. In addition, there is a problem that the operation rate of the belt conveyor 11 also decreases.

[0004] With respect to the structure of the rotating portion of the carrier roller 12, many devices have been devised for the sealing device in order to prevent intrusion of dust and water.
The shape of the labyrinth and the material of the labyrinth have been devised. However, belt conveyor 1
Depending on the use environment of 1, the prevention of intrusion of the fine powder from the raw material 10 is not perfect, especially the operation rate of the belt conveyor 11 is high, and in the carrier roller 12 which continuously receives the fine powder, poor rotation of the bearing, seizure, rotation is impossible. In many cases. Further, as a result of various studies for solving the problem, the bearing 1 of the carrier roller 12 was obtained.
In order to prevent the fine powder from entering the housing 7, it is significantly more effective to close the gap between the carrier stand 19 and the housing 16 of the carrier roller 12 as much as possible than by a labyrinth structure or a seal structure near the bearing 17. I learned. The present invention has been made in view of such circumstances, and has a simple carrier roller structure to effectively prevent fine powder from entering a bearing, and to prevent the roller pipe from being worn or damaged due to the inability of the carrier roller to rotate. It is an object of the present invention to provide a belt conveyor carrier roller which can be reduced as much as possible.

[0005]

According to the present invention, there is provided a semiconductor device comprising:
The carrier roller for a belt conveyor according to the present invention is arranged in a tilted state on both sides of a carrier roller arranged in the center in a horizontal state, a support shaft having both ends supported by a carrier stand, and bearings provided on both sides of the support shaft. A housing housing the bearing, and a carrier roller for a belt conveyor including a roller pipe integrated with the housing, wherein the support shaft is provided at an end of the roller pipe where the raw material being transported falls. A donut-shaped disc for preventing falling powder particles having an outer diameter that is larger than the outer diameter of the roller pipe, having an opening at the center with a small gap and penetrating therethrough, is provided at the end of the roller pipe and It is mounted in close contact with the housing provided on the inside thereof, and the gap between the donut-shaped disc and the carrier stand is reduced, and Rear stand covers the gap between the supporting shaft and the opening of the donut type circular plate. Further, the carrier roller for a belt conveyor according to the second aspect is the first aspect.
In the carrier roller for a belt conveyor described above, the donut-shaped disc is made of a synthetic resin material having excellent slipperiness.

[0006]

In the carrier roller for a belt conveyor according to the first and second aspects, an opening through which a support shaft penetrates with a small gap is provided at an end of the roller pipe onto which the raw material being transported falls. Then, a donut-shaped disc for preventing falling powder particles having an outer diameter larger than the outer diameter of the roller pipe,
The housing is covered with a donut-shaped disc because it is mounted in close contact with the end of the roller pipe and the housing provided inside the roller pipe, and enters through the gap between the donut-shaped disc, the housing, and the end of the roller pipe. Almost no fine powder is lost. The small gap between the donut-shaped disc and the carrier stand prevents fine powder and the like from entering through a small gap between the donut-shaped disc and the support shaft. The fine powder falling into the gap is significantly reduced, and even if the fine powder falls on that portion, the fine powder is repelled outward by the rotating donut-shaped disc.

[0007]

DESCRIPTION OF THE PREFERRED EMBODIMENTS Embodiments of the present invention will be described below with reference to the accompanying drawings to facilitate understanding of the present invention. FIG. 1 is a partial cross-sectional view of a carrier roller for a belt conveyor according to an embodiment of the present invention, FIG. 2 is a side view of a donut disk used in the carrier roller as viewed from the inside, and FIG. FIG. 4 is a partial front view showing a state where the roller is mounted on a carrier stand. FIG. 4 is an explanatory view showing a portion where the carrier roller according to the embodiment of the present invention is applied to a belt conveyor.

FIGS. 1 to 4 show a carrier roller 30 according to an embodiment of the present invention. The same components as those of the carrier roller 12 shown in FIG. Omitted. Bearing 17 on support shaft 18
At the end of the roller pipe 15 rotatably mounted via the housing 16, a donut-shaped disc 31 for preventing falling particles from entering is mounted as shown in FIG. 1.

The donut-shaped disc 31 is made of Teflon, which is an example of a synthetic resin having excellent slipperiness, and is formed in a disc shape having a diameter larger than the outer diameter of the roller pipe 15. Is provided in accordance with the shape of the housing 16 and the overall thickness is
Also, when it is attached to the end of the roller pipe 15 in close contact with the carrier stand 19, the gap is formed to such an extent that a slight gap (for example, C = 1 to 2 mm) is generated. Further, an opening 33 having a diameter slightly smaller than that of the support shaft 18 mounted at the center of the donut-shaped disc 31 is formed, a plurality of screw holes 34 are provided around the periphery, and the outside is flat. A female screw hole 35 is formed in the housing 16 at a position corresponding to the screw hole 34.

As shown in FIG. 1, the donut-shaped disc 31 is fitted tightly to the outside of the housing 16 on one side of the roller pipe 15 with the projection 32 inside. It is screwed and attached with a countersunk screw 36 using the hole 35. The donut disk 31
As shown in FIG. 5, when it is mounted on the belt conveyor 11, it suffices to mount it only on the side where the raw material falls (that is, outside the two inclined carrier rollers). If there is a gap or the like between the roller pipe 15 and the donut-shaped disc 31, it is preferable to fill the gap with an adhesive or the like appropriately so that fine powder does not enter from the outside. .

The carrier roller 30 constructed as described above
When mounting on a belt conveyor, both ends of the support shaft 18 are mounted on a carrier stand 19 mounted in advance. In this case, since there is only a slight gap between the donut-shaped disc 31 and the carrier stand 19, Fine powder such as iron ore falling between the rotating donut-shaped disc 31 and the carrier stand 19 is repelled by the carrier stand 19 and falls to the outside. Therefore, the fine powder of the raw material can be significantly suppressed from entering the bearing 17.

As shown in FIG. 4, the carrier roller 30 having the above-described structure is constructed by combining three sets of carrier rollers of a belt conveyor 11 having a machine length of 40 m and a belt width of 1.2 m. 114 of the carrier roller 30 at both ends of the B and D block parts except the E part and the center part C
Although the present invention was applied to a book, in the past, about 27 carrier rollers were replaced per month, but after the application, the replacement of the carrier roller 30 was not required at all even after 9 months.
Therefore, it has been proved that the labor for replacing the carrier roller 30 can be omitted, and the operation rate can be improved. Note that the diameter of the donut-shaped disc 31 is
By making the diameter larger than the diameter of the roller pipe 15 (for example, about 1.05 to 1.2 times) within a range not interfering with the raw material, a weir is formed against the intrusion of the raw material from the conveyor belt side so that the fine powder in the raw material is more effectively prevented from entering. Can be reduced. Further, in mounting the donut-shaped disc, it is also possible to simply use a doughnut or the like instead of using a countersunk screw as in the above-described embodiment, and to simply join them with an adhesive or the like. A mold disk can be mounted.

[0013]

According to the carrier roller for a belt conveyor according to the first and second aspects of the present invention, an opening through which a support shaft has a small gap is formed at an end of a roller pipe onto which a material being transported falls. And a donut-shaped disc having an outer diameter larger than the outer diameter of the roller pipe for preventing intrusion of falling particles is attached to the end of the roller pipe and a housing provided inside the roller pipe in close contact. As a result, the amount of raw material spilling from the end of the roller pipe is reduced. Further, the gap between the donut-shaped disc and the carrier stand is small, and the carrier stand covers the gap between the opening of the donut-shaped disc and the support shaft. The amount of contact with the shaft is reduced. With the above configuration, it is possible to prevent fine powder from entering the bearing portion, and the bearing has a long life, thereby greatly reducing wear and breakage due to poor rotation of the carrier roller, and replacing the carrier roller. In addition to reducing the number of man-hours required for the operation, a great effect is achieved such as a reduction in the operation rate of the belt conveyor.

[Brief description of the drawings]

FIG. 1 is a partial cross-sectional view of a carrier roller for a belt conveyor according to an embodiment of the present invention.

FIG. 2 is a side view of a donut-shaped disk used for the carrier roller as viewed from the inside.

FIG. 3 is a partial front view showing a state where the carrier roller is attached to a carrier stand.

FIG. 4 is an explanatory view showing a portion where the carrier roller according to the embodiment of the present invention is applied to the belt conveyor.

FIG. 5 is a front view showing a use state of a belt conveyor according to a conventional example.

FIG. 6 is a partial sectional view showing a broken state of the carrier roller.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 10 Raw material 11 Belt conveyor 15 Roller pipe 16 Housing 17 Bearing 18 Support shaft 19 Carrier stand 20 Labyrinth 21 Labyrinth 22 Inner cover 23 Outer cover 24 Ring 30 Carrier loaf 31 Donut shaped disk 32 Projection 33 Opening 34 Screw hole 35 Female screw hole 36 Countersunk screw

──────────────────────────────────────────────────続 き Continuation of the front page (56) References Japanese Utility Model Sho 55-11954 (JP, U) Japanese Utility Model Hei 2-124922 (JP, U) Japanese Utility Model Sho 50-108180 (JP, U) Japanese Utility Model Sho 54- 6784 (JP, U) Jikken 47-1729 (JP, Y1) (58) Field surveyed (Int. Cl. ⁶ , DB name) B65G 39/00-39/20

Claims (2)

(57) [Scope of request for utility model registration] 1. A support shaft, which is disposed in an inclined state on both sides of a carrier roller disposed horizontally in the center and has both ends supported by a carrier stand, bearings provided on both sides of the support shaft, and the bearings. A housing roller to be accommodated, and a carrier roller for a belt conveyor including a roller pipe integrated with the housing.
The roller pipe is provided with a donut-shaped disc having an outer diameter larger than the outer diameter of the roller pipe for preventing falling particles from entering, the opening having a center through which the support shaft penetrates with a small gap. The donut-shaped disc and the carrier stand have a small gap between the donut-shaped disc and the carrier stand. A carrier roller for a belt conveyor, wherein the carrier roller covers a gap between the belt and the support shaft. 2. The carrier roller for a belt conveyor according to claim 1, wherein the donut-shaped disc is made of a synthetic resin material having excellent slipperiness.