Passive automatic lighting device for belt conveyor

Abstract

The utility model discloses a passive automatic lighting device for a belt conveyor, and belongs to the technical field of lighting. One end shaft of the middle carrier roller is subjected to repair welding and lengthened, a belt connecting piece on the repair welding shaft end is welded with a cylinder body, a groove used for being connected with a medium transmission belt is formed in the belt connecting piece, and the width of the groove is matched with that of a groove of a machine end connecting belt of the permanent magnet three-phase alternating current generator. The device integrates green, environment-friendly, intelligent and energy-saving functions, the engineering cost input is remarkably reduced, the economic benefit is more remarkable along with the increase of the conveying distance, and the device is suitable for illumination of belt conveyors in multiple industries such as mines, coal, wharfs and the like, and has wide market popularization value.

Description

Technical Field

[0001] The utility model belongs to the technical field of lighting, and particularly relates to a passive automatic lighting device for a belt conveyor. Background Art

[0002] In a long-distance belt conveyor system, there are potential safety hazards in specific areas such as in the tunnel bridge due to the lack of lighting facilities. Independent lamps are installed for lighting at the tunnel trestle, and no lighting is arranged during the layout of the roadway, relying on the street lamps on the inspection road for lighting. In actual use, due to the long length of the tunnel bridge, the light in the tunnel bridge is insufficient during the day, and there is no light at night. The inspection personnel need to use a flashlight for lighting, which is not conducive to inspection and there are potential safety hazards.

[0003] One of the existing solutions is to draw power from the nearby street lamps on the inspection road for lighting, with a distance of about 200m. However, during the day to save electricity, the street lamps on the inspection road will be powered off, and lighting in the tunnel bridge cannot be achieved. The other is to install solar lamps, but when there are continuous rainy or cloudy days, the power is insufficient, and in winter with a long duration and the temperature as low as -40°C, the battery life is severely reduced.

[0004] Both of the existing solutions, whether connecting to an external power source or using solar lamps, have problems such as high cost, difficult maintenance, great influence of weather, and short lighting time. Therefore, there is an urgent need for an economical, reliable and easy-to-maintain lighting system to solve such problems. Summary of the Invention

[0005] Aiming at the deficiencies of the existing technology, the purpose of the utility model is to provide a passive automatic lighting device for a belt conveyor.

[0006] The technical solution adopted by the utility model is: a passive automatic lighting device for a belt conveyor, including a first standard idler, an intermediate idler and a second standard idler. The technical key point is that it also includes a permanent magnet three-phase AC generator. One end shaft of the intermediate idler is welded and lengthened, and the belt connecting piece on the welded shaft end is welded to the cylinder body. A groove for connecting the medium transmission belt is arranged on the belt connecting piece, and the width of the groove is matched with the width of the groove of the belt connecting the machine end of the permanent magnet three-phase AC generator. The intermediate idler and the permanent magnet three-phase AC generator are connected by belt drive, and the permanent magnet three-phase AC generator is directly connected to the lamp to achieve lighting.

[0007] In the above solution, a gap is left between the groove on the belt connecting piece and the shaft of the intermediate idler to ensure that the intermediate idler does not get stuck during rotation.

[0008] In the above solution, the base of the permanent magnet three-phase AC generator is fixed on the cross beam of the intermediate frame, and the base of the permanent magnet three-phase AC generator and the cross beam are connected by bolts with oblong holes.

[0009] The beneficial effects of the present utility model are as follows: For the passive automatic lighting device for belt conveyors, one end shaft of the intermediate idler is repaired and extended by welding. The belt connecting piece on the repaired shaft end is welded to the cylinder body. A groove for connecting the medium transmission belt is provided on the belt connecting piece, and the width of the groove matches the width of the groove of the belt connected to the machine end of the permanent magnet three-phase AC generator. The intermediate idler and the permanent magnet three-phase AC generator are connected by belt drive. This device integrates green, environmental protection, intelligence, and energy conservation, significantly reducing the engineering cost investment. Moreover, with the increase of the conveying distance, the economic benefits are more significant. It is applicable to the lighting of belt conveyors in multiple industries such as mines, coal, and docks, and has broad market promotion value. BRIEF DESCRIPTION OF THE DRAWINGS

[0010] In order to more clearly illustrate the technical solutions in the embodiments of the present utility model or the prior art, the following will briefly introduce the drawings required for use in the embodiments. Obviously, the drawings in the following description are only some embodiments of the present utility model. For those of ordinary skill in the art, without creative efforts, other drawings can also be obtained based on these drawings.

[0011] Figure 1 Schematic diagram of the passive automatic lighting device for belt conveyors in the embodiment of the present utility model;

[0012] Figure 2 is Figure 1 left view of;

[0013] Figure 3 Schematic diagram of the structure of the permanent magnet three-phase AC generator in the embodiment of the present utility model;

[0014] Figure 4 Use state diagram of the passive automatic lighting device for belt conveyors in the embodiment of the present utility model;

[0015] The description of the serial numbers in the figure is as follows: 1 standard idler, 2 groove, 3 repaired shaft end, 4 permanent magnet three-phase AC generator, 5 drive belt, 6 idler support, 7 intermediate frame. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0016] To make the above objects, features, and advantages of the present utility model more obvious and understandable, the following will further describe the present utility model in detail with reference to the Figures 1-4 drawings and specific embodiments.

[0017] A passive automatic lighting device for a belt conveyor in this embodiment includes a first standard idler, an intermediate idler 1, a second standard idler, a permanent magnet three-phase AC generator 4, a drive belt 5, an idler bracket 6, and an intermediate frame 7. In this embodiment, the first standard idler and the second standard idler are located on both sides of the intermediate idler 1, and the intermediate idler is installed on the idler bracket 6. The intermediate idler and the permanent magnet three-phase AC generator 4 are connected by means of a medium drive belt 5. The intermediate idler is connected to the permanent magnet three-phase AC generator 4, and the permanent magnet three-phase AC generator 4 is directly connected to the lamp to achieve lighting. As Figure 2 shown, in this embodiment, one end shaft of the intermediate idler is repaired and welded to be lengthened, and the belt connecting piece sleeved on the repaired shaft end 3 is welded to the cylinder body. The belt connecting piece is in an I shape, and the groove 2 on it is used to connect the medium drive belt 5, and the width of the groove 2 matches the width of the groove of the belt connected to the machine end of the permanent magnet three-phase AC generator 4. The intermediate idler and the permanent magnet three-phase AC generator 4 are connected by belt drive. By adjusting the inner diameter size of the groove 2, the rotational speed of the generator meets the rated rotational speed requirements, and there is a gap between the groove 2 and the shaft of the intermediate idler 1 to ensure that no jamming occurs when the intermediate idler rotates. As Figure 3 shown, the base of the permanent magnet three-phase AC generator 4 is fixed on the cross beam of the intermediate frame 7, and the cross beam is reinforced with rib plates. The base of the permanent magnet three-phase AC generator 4 and the cross beam are connected by bolts with oblong holes, which is convenient for later disassembly and assembly of the belt 5. As Figure 4 shown, when the belt conveyor is running, the friction force of the conveyor belt drives the intermediate idler 1 to rotate during the operation of the belt conveyor. The groove 2 at one end of the intermediate idler 1 also rotates with it. The medium drive belt 5 installed in the groove 2 drives the permanent magnet three-phase AC generator 4 to rotate. The permanent magnet three-phase AC generator 4 is directly connected to the lamp to achieve synchronous start and stop of lighting and the belt conveyor. The belt is a tape containing cotton core, and the medium can be common engineering materials such as conveyor belts and wire ropes, ensuring its wear resistance, corrosion resistance, long service life, good friction effect and other characteristics.

[0018] The working process of the passive automatic lighting device for the belt conveyor in this embodiment is as follows: when the belt conveyor is running, the conveyor belt drives the intermediate idler to rotate, and the groove at one end of the intermediate idler rotates with it. The belt installed in the groove drives the generator to rotate, so that the generator reaches the rated rotational speed and the generated voltage is stable. The generator is directly connected to the lamp to achieve synchronous start and stop of lighting and the belt conveyor, so that the lamp can maintain a stable brightness. The lighting lamp can be automatically switched on and off with the start and stop of the belt conveyor, without manual operation. There is no battery design, which can avoid engineering safety hazards caused by battery explosion, fire, etc., and at the same time solve the defect problems of solar energy, external power supply and other solutions.

[0019] The above are only specific embodiments of the present utility model, but the protection scope of the present utility model is not limited thereto. Any person skilled in the art within the technical scope disclosed by the present utility model can easily think of changes or substitutions, which should all be covered within the protection scope of the present utility model. Therefore, the protection scope of the present utility model shall be subject to the protection scope of the said claims.

Claims

1. A passive automatic lighting device for a belt conveyor, comprising a first standard idler, an intermediate idler and a second standard idler, characterized in that, It also includes a permanent magnet three-phase AC generator. One end shaft of the intermediate idler is repaired and lengthened by welding to serve as the welded shaft end. The belt connecting piece on the welded shaft end is welded to the cylinder body. A groove for connecting the medium transmission belt is provided on the belt connecting piece, and the width of the groove matches the width of the groove of the belt connected to the machine end of the permanent magnet three-phase AC generator. The intermediate idler and the machine of the permanent magnet three-phase AC generator are connected by belt drive, and the permanent magnet three-phase AC generator is directly connected to the lamp for lighting.

2. The passive automatic lighting device for belt conveyors according to claim 1, characterized in that, A gap that ensures no jamming occurs when the intermediate idler rotates is left between the groove on the belt connecting piece and the shaft of the intermediate idler.

3. The passive automatic lighting device for belt conveyors according to claim 1, characterized in that, The base of the permanent magnet three-phase AC generator is fixed on the cross beam of the intermediate frame, and the base of the permanent magnet three-phase AC generator and the cross beam are connected by bolts through oblong holes.

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