JPH0977234A - Disk roller - Google Patents

Abstract

PROBLEM TO BE SOLVED: To solve a weak point of ceramics against the impact by interposing a rubber plate as an impact absorbing material while playing attention to the wear resistance property of ceramics. SOLUTION: In a disk roller for a return roller to be used in a conveyor belt, a rubber plate 5 is inserted between a core 1 and a ceramics ring 4 as an impact absorbing material when the ceramics ring 4 is used. When the disk roller in which a ceramics cylinder is used for the return roller is fitted as a means to mitigate the distortion and the impact of the long metallic return roller, the disk roller in which the rubber plate of 1mm-50mm in thickness is used as the impact absorbing material is used between a metallic shaft (core) and the ceramics ring, demonstrating the durability of >=60 times compared with that of the conventional metallic roller in three months, raising no problems in performance, and proving the excellent effect in the economic and safety aspect.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an improvement of a disc roller for a return roller used for a conveyor belt.

[0002]

2. Description of the Related Art Disk rollers for return rollers used for conveyor belts have been mainly made of metal. However, durability has become a problem, and in recent years, there has been a product in which ceramics are sprayed, that is, ceramic particles are sprayed and fixed to the surface of a metal roller in a molten state. However, the wear resistance of the roller is always a problem. This roller, for example, receives the load of the conveyor belt and rotates at a speed of 240 rotations / minute. Also, for example, coke on the conveyor,
Some of them transport powder such as coal having strong abrasion, and in such a conveyor, improvement of the return roller has been strongly desired.

[0003]

DISCUSSION OF THE DISCLOSURE OF THE INVENTION Disc rollers for return rollers, which are conventionally used for conveyor belts, have a high wear resistance of ceramics in order to improve the wear resistance of powder particles having strong wear. Focusing attention, a ceramic disc roller was also tried, but since ceramics have the drawbacks of being brittle and easily cracked by impact, in order to crack or chip under the load of the belt or the impact. There is a strong demand for improvements in disc rollers for return rollers.

[0004]

In the present invention, attention is paid to the wear resistance of ceramics, and in consideration of the point which can be solved by interposing a rubber plate as a shock absorbing material, the weak point against the shock is intervened. It was made.

According to the present invention, a rubber plate is filled between a ceramic ring and a metal shaft (core metal) to produce a disc roller, and a metal long return roller is provided at several places of the roller. The roller is fixed by welding.

The rubber filled between the ceramic ring and the metal shaft (core metal) serves as a cushioning material, and when the roller is distorted from fragile ceramic,
It protects against impact and makes a ceramic return roller possible. The thickness of the rubber plate used as the impact absorbing material is set to 1 mm to 50 mm because the impact cannot be absorbed when the thickness is 1 mm or less, and the wear resistance effect of the ceramic is small when the thickness is 50 mm or more.

The present invention will be described in detail below with reference to examples.

【Example】

Example 1 A metal shaft (core metal) 1 having a total length of 1800 mm and an outer diameter of 76 mm shown in FIG. 1 was produced, and an outer diameter 130 was formed on the outer diameter portion.
A disk roller 3 having a diameter of 76 mm, an inner diameter of 76 mm, and a width of 40 mm was manufactured and fixed to the metal shaft (core metal) 1 by welding. The disc roller 3 has a structure in which a rubber plate 5 is filled between a ceramic ring 4 and a metal shaft (core metal) 1 as shown in FIG. The return roller 3 thus manufactured was actually mounted on the conveyor belt 2 having a width of 1600 mm for actual use. As a result, the performance of the return roller was able to be performed without much difference from the conventional metal roller. After about 3 months of use, the amount of wear was measured and was 0.15 mm. On the other hand, the conventional metal roller had a wear of 10 mm.

[0008]

COMPARATIVE EXAMPLE 1 As a comparative example, FIG. 3 shows a disk roller 3 in which a ceramic ring 4a is bonded to a metal shaft (core metal) 1. A metal shaft (core metal) 1 having a total length of 1800 mm and an outer diameter of 105 mm is manufactured, and a ceramic ring 4a having an outer diameter of 130 mm, an inner diameter of 105 mm and a width of 40 mm is manufactured on the outer diameter portion, and a ceramic is made by using an epoxy resin 6. The ring 4 a made of metal was joined to the metal shaft (core metal) 1. The width of the return roller 3a thus manufactured is 1
Three pieces were mounted on a 600 mm conveyor belt 2 and tested by actual use, but large cracks occurred in just two days after use.

[0009]

As a means for alleviating the distortion and impact of a long metal return roller, when a disk roller using a ceramic ring is mounted on the return roller, a metal shaft (core bar) and a ceramic ring are used. By using a disc roller that uses a rubber plate with a thickness of 1 mm to 50 mm as a shock absorber,
It has a durability of 60 times or more in 3 months compared to the conventional metal roller, has no problem in performance, and has a great economic and safety effect.

[Brief description of drawings]

FIG. 1 is a configuration diagram of a return roller of the present invention.

FIG. 2 is a projection explanatory view of the disc roller of the present invention.

FIG. 3 is a configuration diagram of a return roller using only a conventional ceramic ring.

FIG. 4 is an explanatory diagram of a conventional disk roller having only a ceramic ring.

[Explanation of symbols]

 1 Metal Shaft (Core Bar) 2 Conveyor Belt 3 Disc Roller 3a Return Roller 4, 4a Ceramic Ring 5 Rubber Plate 6 Epoxy Resin (Adhesive)

Claims (2)

[Claims] 1. A disk roller for a return roller used in a conveyor belt, wherein when a ceramic ring is used, a rubber plate is inserted as a shock absorbing material between the core metal and the ceramic ring. Disc roller to do. 2. The disk according to claim 1, wherein the thickness of the rubber plate used as a shock absorbing material between the metal shaft (core metal) and the ceramic ring is 1 mm to 50 mm or less. roller.