There are many different frictional forces when using explosion-proof electric drums, and the reasons for these frictional forces are also different, which leads to different reasons for the damage of electric drums. Generally speaking, the frictional force of the electric drum is directed towards one side of the goaf, and from a design perspective, it should be made smaller. Various frictional forces should be consumed as much as possible on the electric drum to achieve internal balance. So what is the source of friction for the explosion-proof electric drum? Below, the editor will tell you about it:
1. Friction caused by chamfering feed: Additional friction caused by lateral feed cutting resistance during coal cutting when the electric drum end pick participates in chamfering. When the coal mining machine enters the curved section, the friction direction of the explosion-proof electric drum points towards the goaf side. When the coal mining machine leaves the curved section, the friction force is directed towards the coal wall side.
2. Friction generated by electric drum and coal extrusion: In the space enclosed by the end of the electric drum and the coal arm, the friction generated by random coal falling squeezes each other, and its direction points towards the side of the material falling.
3. Friction caused by axial displacement of explosion-proof electric drum: Due to the different propulsion resistance and traction force of the electric drum, there is horizontal torque, which causes the coal mining machine to deflect laterally as a whole in the horizontal plane, resulting in friction. When cutting coal, place it on the drum shaft. In order to shift gears, this type of shifting is equivalent to axial rolling and feed, generating an additional friction.
4. Friction generated by the end disc pick: The corner teeth on the end disc are in a semi closed cutting state, and most of the teeth are inclined towards the coal wall, generating a large friction force and pointing towards the feeding side.
5. Friction generated when loading coal into the flashlight: the reaction force of throwing and pushing coal generated when loading coal with spiral blades.
The above introduction is about explosion-proof electric rollers. As we all know, equipment needs to rotate, so friction cannot be avoided in explosion-proof electric rollers. But we can greatly reduce or maintain equipment, and timely maintain the equipment on the basis of reducing harm.
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