boring machine has become integral coal excavation equipment. the partial-section cantilever boring machine is the main equipment used by most companies which consists of cutting part, shovel plate, the first conveyor, body, transmission, back support, hydraulic system, water system, lubrication system and electrical system. by the operation of electrical system and hydraulic system, the machine could complete all kinds of production operation.
there are several ways to classify boring machine. it could be divided into two types according tothe orientation ofthe axis ofthe cutting headandthe longitudinal axis ofboring machinepoints:the longitudinal axis boring machine andhorizontal axis boring machine. it could be divided into coal road boring machine, half coal road boring machine and rock boring machine according tothe geologicalcharacteristicsofcoal and rockcutting.
nhi isone of the earliest companies whichdesign and product boringmachine in china. nhi supply quality products to major domestic coal producers for many years. now ithas formed aseries ofboring machinesuch asebz120, ebz132, ebz160a, ebz160a (short), ebz200, ebz220, ebz240, ebz260, ebz320, ebh360. in 2012, nhi developedtheebh360horizontal axis boring machine which is a breakthrough in the structural design and manufacture. it solves the problem of cutting transmission and achieves the conversion between two speeds. it also make it possible which hydraulic and electrical control in the hydraulic system at the same time. in the electrical system, it achievesremotecontrol andprofile cuttingfunction. the technology is at a leading level in china.