Improved roadway boring machine

Abstract

The invention discloses an improved roadway boring machine. The upper portion of a rack is connected with a hydraulic motor and a cantilever, the outer side of the cantilever is connected with a cutting head, a nozzle is arranged on the outside of the cutting head, and a water injection pipe is further arranged inside the cantilever; a first through hole is formed between the cantilever and the water injection pipe, the hydraulic motor is connected with a water injection ring through a support frame, and the water injection ring is connected with a water inlet pipe through a water pipe joint; and the outside of the bearings are sleeved with sealing rings, each sealing ring comprises a first rubber ring and two second rubber rings, and the two second rubber rings are respectively located on both sides of each bearing, first springs are arranged between the second rubber rings and the first rubber rings, the two sides of the second rubber rings and the first rubber rings are connected through connection rigs, annular cavities are further formed inside the first rubber rings, two second through holes are formed inside the annular cavities, and the outside of two first rubber rings are sleeved with sleeve tubes. The improved roadway boring machine can improve the deficiencies of the prior art, and a spray structure of the improved roadway boring machine has a better sealing and a cooling effect.

Description

technical field [0001] The invention relates to a boring machine device, in particular to an improved roadway boring machine. Background technique [0002] Roadway boring machine, also known as cantilever boring machine, is a kind of mining equipment, mainly composed of cutting device, conveying device, traction device and control device. It is mainly used for underground mining of coal and tunneling of coal mine roadways. At present, there is generally an internal spray system on the roadheader, which realizes the function of spraying water mist to reduce dust and temperature while cutting the coal seam. Chinese invention patent CN 204591273 U discloses a concealed spray structure of the roadheader. The spray structure of the roadheader with this structure is provided with a through hole at the front end of the cutting part frame, and a nozzle is arranged in the through hole to realize cooling of the cutting head, but the cooling effect of this device is not good, and the ...

AI Technical Summary

Problems solved by technology

The spray structure of the roadheader with this structure is provided with a through hole at the front end of the cutting part frame, and a nozzle is arranged in the through hole to realize cooling of the cutting head, but the cooling effect of this device is not good, and the sealing performance is not good, which limits its scope of application

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