Double-layer noise reduction type coupler protective cover

Abstract

The invention discloses a double-layer noise reduction type coupler protective cover, which relates to the technical field of rotating machinery protection, is applied to an underground coal mine, and comprises a protective cover body with inverted U-shaped openings in the front side and the rear side, and an interlayer arranged on the protective cover body and used for insulating sound; the fixing plates are arranged on the two sides of the bottom end of the protective cover body and flush with the bottom end of the protective cover body, and the sound insulation cotton is arranged on the inner side of the interlayer and is in a concave-convex wave shape. Noise generated by a coupler connected with a motor or a reduction gearbox can be isolated through the interlayer of the protective cover body, the protective cover body is prevented from generating resonance through the arrangement of the interlayer, and secondary propagation of the noise is formed. Openings are formed in the two ends of the protective cover body, pollution of particles in the working environment to the coupler is effectively prevented, and the risk that after the coupler runs for a too long time, an elastic body is damaged, broken and thrown out to hurt people can also be prevented.

Description

technical field [0001] The invention relates to the technical field of rotating machinery protection, in particular to a double-layer noise-reducing type shaft coupling protective cover. Background technique [0002] With the gradual enhancement of the concept of safety production in the industrial industry, the application of equipment protection is becoming more and more extensive. Spindle couplings such as reciprocating pumps, motors, fans, and gearboxes are in a state of high-speed operation for a long time. If they are not protected, foreign objects may enter the couplings, causing hidden dangers of failure. Therefore, using the protective cover on the high-speed rotating device of the rotary power machine can play a role of safety isolation. The main design direction of the general protective cover is: good sealing, high versatility, easy assembly and disassembly, and easy observation and maintenance [0003] In the process of realizing the present invention, the inv...

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Problems solved by technology

[0003] In the process of realizing the present invention, the inventor found that there are at least the following problems in the prior art: At present, the common coupling guards have realized the main functions of protection and observation, but they are used in harsh industrial and mining environments such as underground coal mines. The obvious disadvantages are that the equipment is noisy and difficult to maintain

In terms of noise reduction, in the roadway with high noise in the underground working face of the coal mine, the coupling is used as a rotary component, and its surface has a gap, and the noise generated during high-speed rotation is relatively large, so the noise source needs to be controlled. No special design is made, only the shield itself is used as a way to cut off the sound wave propagation path

Maintenance difficulties include two aspects: one is that the daily maintenance and operation of the coupling is inconvenient without dismantling the coupling guard, and the other is that when the coupling guard needs to be disassembled, due to its own fixing method Difficulty in disassembly

In addition, in coal mines with large dust or loose roofs, there may be a problem of broken coal falling during equipment operation. Coal slag falling into the coupling may cause equipment damage, and even the coal slag is thrown out by the rotating shaft and hurts people.

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