Belt conveyor rollers

Abstract

To provide a roller for a belt conveyor, which can easily detect a malfunction that prevents rotation due to a defect and can prevent an accident from occurring. [Solution] A belt conveyor roller A has a center shaft (1) supported in a non-rotating state, a bearing (4) inside a freely rotating cylinder (3) at both ends of which an electromagnet (6) for generating electricity is supported on a cylindrical retaining bracket (5) that rotates together with the bearing (4), a permanent magnet (7) for generating electricity is provided inside a cover (8) attached to the outer periphery of the center shaft (1) inside the cylinder (3), a light (9) is provided on the outer surface edge of one end plate of the cylinder (3), and a lead wire (11) is connected to the light (9) to receive power supply from the electromagnet (6) and permanent magnet (7).

Description

[Technical Field]

[0001] This invention relates to a means for detecting abnormalities in rollers that support the belt of a belt conveyor. [Background technology]

[0002] The belt conveyor is provided with rollers that are arranged at scattered positions on the endless belt and support the belt.

[0003] The roller consists of a shaft, both ends of which are supported non-rotatably on the stand of the conveyor frame, and a cylindrical body, both ends of which are rotatably supported on the outside of the shaft via bearings. The cylindrical body supports the belt, ensuring stable running of the belt.

[0004] Therefore, in order to ensure stable running of the belt, there are devices that ensure smooth rotation of the conveyor's cylindrical body and prevent accidents by detecting abnormalities in the cylindrical body (see, for example, Patent Document 1). [Prior art documents] [Patent documents]

[0005] [Patent Document 1] Patent No. 3798494 Summary of the Invention [Problem to be solved by the invention]

[0006] According to the method disclosed in Patent Document 1, a generator is constructed by mounting a stator on a fixed shaft and a rotor on the inner circumferential surface of a cylinder, and an output detection means is connected to this generator. A temperature switch is installed near the bearing, and a temperature abnormality alarm is connected to this temperature switch. The temperature switch, temperature abnormality alarm, and output detection means are connected in parallel to the generator.

[0007] That is, when the conveyor roller rotates, an electromotive force is generated in the generator, and this is detected by the output detection means, thereby detecting abnormal rotation of the conveyor roller.

[0008] The above-described method has problems such as an extremely complicated structure, in that a temperature switch is installed in the bearing and connected to a temperature abnormality alarm device, and the temperature switch, temperature abnormality alarm, and output detection means are connected in parallel to the generator.Furthermore, when replacing a roller in which an abnormality is detected, the replaced roller must be reconnected to the external wiring, which reduces workability.

[0009] SUMMARY OF THE INVENTION It is therefore an object of the present invention to provide a belt conveyor roller that eliminates the above-mentioned problems. [Means for solving the problem]

[0010] In order to solve the above problems, this invention provides a belt conveyor roller consisting of a center shaft, both ends of which are supported non-rotatably on a conveyor frame, and a cylinder, each end of which is supported on either end of the center shaft via a bearing so that it can rotate freely. In this configuration, a cylindrical retaining metal fitting is provided on one of the bearings inside the cylinder, which rotates together with the center shaft, and this retaining metal fitting supports an electromagnet for generating electricity. A permanent magnet for generating electricity is also provided inside a cover provided on the outer periphery of the center shaft inside the cylinder. Furthermore, a light is provided on the outer periphery of one end plate of the cylinder, and lead wires are connected to this light for receiving power supply from the electromagnet and permanent magnet. [Effects of the Invention]

[0011] As described above, according to the belt conveyor roller of this invention, the cylindrical body is forced to rotate in one direction as the belt runs.

[0012] As a result of this forced rotation, the holding electromagnet of the holding fitting and the permanent magnet inside the cover rotate relative to each other, generating electricity, causing a light to light up on the surface of the end plate, indicating that the belt conveyor is operating normally without any interference.

[0013] Of course, if the light is not lit, you will know that the conveyor roller has somehow failed.

[0014] In particular, since the light is provided on the circular edge of the end plate, the luminous light moves along the peripheral edge of the end plate, and since this movement of the light is on the circular peripheral line of the end plate, unlike lighting from the center of the end plate, the lighting part moves around the circumference and draws a circle, which has the effect of significantly improving the effect of attracting attention, and also, by lighting the light, it is possible to eliminate the inconvenience of painting, marking, engraving, etc., as in the past.

[0015] Furthermore, since the light is located on the surface periphery of one end plate of the cylindrical body that makes up the roller and is integrated with the roller, when replacing a roller in which an abnormality has been detected, there is no need to reconnect the wiring to the light, improving the ease of replacement work. [Brief explanation of the drawings]

[0016] [Figure 1] 1 is a partially cutaway front view showing an embodiment of the present invention. DETAILED DESCRIPTION OF THE INVENTION

[0017] Next, an embodiment of the present invention will be described with reference to the accompanying drawings. A shown in FIG. 1 is a roller for a belt conveyor.

[0018] The belt conveyor roller A has a freely rotating cylindrical body 3 provided on the outside of a center shaft 1 whose both ends are supported in a non-rotating state by a conveyor frame (not shown).

[0019] To support both ends of the center shaft 1 in a non-rotating state, grooves 2 are cut into the outer periphery of the center shaft 1 at different positions 180° apart just before each end, and these grooves 2 are inserted into notches (not shown) provided below the top end of the stand (not shown) to provide support.

[0020] In addition, the center shaft 1 passes through the center of the cylindrical body 3 on the outside of both ends of the center shaft 1, and bearings 4 at both ends of the cylindrical body 3 are supported on both ends of the center shaft 1, allowing the cylindrical body 3 to rotate freely relative to the center shaft 1.

[0021] Furthermore, one-sided bearing 4 in cylindrical body 3 is provided with a cylindrical retaining metal fitting 5 that rotates together with cylindrical body 3.

[0022] The retaining fitting 5 is made, for example, from a metal plate, which is pressed into a cylindrical shape, and is fixed by welding or the like to a bearing 4 which also serves as an end plate for closing the end face of the cylindrical body 3, so that the retaining fitting 5 rotates together with the cylindrical body 3. The holding metal fitting 5 is also provided with electromagnets 6 arranged in a circle for generating electricity.

[0023] Furthermore, a permanent magnet 7 for generating electricity is provided within the circle inside the arrangement of the electromagnet 6, and the permanent magnet 7 is incorporated into a cover 8 that is fitted onto the outside of the center shaft 1 and supported by the center shaft 1.

[0024] In the case shown in Figure 1, electromagnet 6 is provided on the retaining bracket 5 side and permanent magnet 7 is provided inside cover 8, but it is also possible to place permanent magnet 7 on the retaining bracket 5 side and electromagnet 6 on the cover 8 side, and this does not interfere with the power generation function.

[0025] In addition, the bearing 4 on the electromagnet 6 side is provided with a mounting socket 10 for a light 9 exposed on the surface side of the bearing 4 on the closed end face side of the cylinder 3, and this socket 10 is connected to a lead wire 11 that is energized from the electromagnet 6.

[0026] The light 9 is provided near the outer peripheral edge of the end plate on the end face closing side of the cylindrical body 3 of the bearing 4, and the movement position of the light 9 within the circular line is close to the outer periphery of the cylindrical body 3, making it easy to consider where the light 9 is located so that it is easy to see.

[0027] With the above configuration, when the conveyor operates, the belt runs and the cylinder 3 rotates, generating electricity between the rotating electromagnet 6 and permanent magnet 7. As electricity is generated, this electricity is supplied to the light 9 via the lead wire 11, causing the light 9 to light up.

[0028] The light 9 lights up and moves in a circle as the belt conveyor roller A rotates, so that the light is conspicuous and it is possible to see at a glance that the belt conveyor roller A is rotating.

[0029] This light indicates that belt conveyor roller A is operating normally. Conversely, when the light 9 is not on, poor driving due to, for example, an accident can be detected by the light 9 being turned off. [Explanation of symbols]

[0030] A Belt conveyor roller 1 Center axis 2 Groove 3 Cylinder 4 Bearings 5 Retaining bracket 6. Electromagnets 7. Permanent magnets 8 Cover 9 Light 10 sockets 11 Lead wire

Claims

[Claim 1] A belt conveyor roller comprising a center shaft, both ends of which are supported non-rotatably by a conveyor frame, and a cylindrical body, each end of which is supported on each end of the center shaft via a bearing so that it can rotate freely, characterized in that a cylindrical retaining metal fitting is provided in the cylindrical body so as to rotate together with one of the bearings, and an electromagnet for generating electricity is supported on this retaining metal fitting, and a permanent magnet for generating electricity is provided inside a cover provided on the outer periphery of the center shaft inside the cylindrical body, and a light is provided on the peripheral surface edge of one end plate of the cylindrical body, and lead wires are connected to this light for receiving power supply from the power generated by the electromagnet and permanent magnet.

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