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Four Development Stage of Foreign Roadheader

Date:23/11/2016   View: 611   Tags: Development Foreign Roadheader

First stage: At the end of 1940s to mid  60's.During this period, roadheader was born which formed the primary shape of integrating cutting ,shipping and walk that was mainly utilized in soft roadway excavation with 15t body weight. The representative machines are F5 from the Hungarian National Institute of mining machine andДК-3 from Ukraine.

—Second stage: Mid  60's to end of 70’s.During this period, the roadheader was on rush development. The roadway excavation with 20~40t machine . The representative machines are RH25 from British Anderson company,AM50 from Austria Alps, Ltd and MRH-100 from Japan Three Mitsui pool company.

—Third stage: End of 70’s to end of 80’s.During this period, half coal rock roadheader was going to maturation and heavy model machine was releasing. The function of roadway excavation was complete and reliability was improved with 50t machine. The representative machines are MKII8 and LH1300 from England Dhosk company,AM75 from Austria Alps and E169 from German Paula company.

— Fourth stage: End of 80’s to end of last century. During this period, heavy machine weight increased, generally above 70t, cutting hardness above 100Mpa. Roadheader adapted new technology, formed more perfect function; computer automatic control system was relatively mature and was entering the machine forward rock drivage. The boring machine has entered the electromechanical integration automatic control cutting age. The representative ongoing roadheader in America& Australia and dig anchor machine put out in 80’s  has created new age of quick excavation.The main production companies have factories in Austria Delle Alpi Ni company, British dhosk company, Anderson, AI Lemke company, Germany Schall Jet company, Ackoff, Paula company, West Fowlie company, Japan Mitsui three pools and the Ukraine with main series AM, E, Et, STM, MRH ,N K etc.

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