Adjustable tunneling device for coal mining

Abstract

An adjustable tunneling device for coal mining comprises a moving mechanism, a box body is arranged on the moving mechanism, a water tank is arranged in the box body, the right side wall of the watertank is connected with a first sleeve, an auger shaft is arranged in the first sleeve, auger blades are sleeved on the outer side of the auger shaft, a first motor is arranged on the right side of thebottom in the box body, and a second pipe is arranged on the upper side of the box body. The left side of the second pipe is connected with a third-dimensional moving device. A second motor is arranged on the inner side of the second pipe; a drill bit is connected to the right end of the second pipe; cutter teeth are arranged on the outer side wall of the drill bit; a second sleeve is arranged between the cutter teeth; a first water outlet hole is formed in the side wall of the second sleeve; a second water outlet is formed in the side, corresponding to the cutter teeth, of the second sleeve.According to the water spraying device, when the drill bit drives the cutter teeth to tunnel or expand the excavation face outwards, water can be sprayed to the working face all the time in the firstwater outlet holes, and therefore the effects of softening the working face and reducing dust are achieved; and after the water spraying device is used, the cutter teeth are cleaned through water inthe first water outlet holes. Meanwhile, part of water sprayed upwards from the second water outlet holes can flush coal dust on the drill bit after falling down.

Description

technical field [0001] The invention belongs to the field of coal mining tunneling devices, in particular to an adjustable tunneling device for coal mining. Background technique [0002] In the process of underground coal mining, it is necessary to spray water on the excavation surface to reduce dust and soften the excavation surface while excavating. The current excavation bit can excavate the excavation surface, and at the same time, it can excavate and expand to both sides of the excavation surface. When excavating and expanding on both sides, since the water spray device is always spraying water in the direction of the drill bit, although the water spray device can also have a certain dust reduction effect at this time, the dust reduction effect is not good and can no longer be used in the expansion direction. The coal layer is softened by spraying water, which is likely to cause sparks during the expansion process and cause safety accidents. At the same time, the drill ...

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Problems solved by technology

[0002] In the process of underground coal mining, it is necessary to spray water on the excavation surface to reduce dust and soften the excavation surface while excavating. The current excavation bit can excavate the excavation surface, and at the same time, it can excavate and expand to both sides of the excavation surface. When excavating and expanding on both sides, since the water spray device is always spraying water in the direction of the drill bit, although the water spray device can also have a certain dust reduction effect at this time, the dust reduction effect is not good and can no longer be used in the expansion direction. The coal layer is softened by spraying water, which is likely to cause sparks during the expansion process and cause safety accidents. At the same time, the drill bit needs to be cleaned after use, otherwise the drill bit will easily scale after a long time and reduce the digging effect and service life of the drill bit. There are many teeth, the workload of cleaning each cutter tooth is too large and it is easy to cause waste of water resources. A coal mining excavation device is now designed to address the above defects

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