Study on design and manufacturing key technology of 8.8 m hydraulic powered support
GAO Youjin
Abstract：According to the status of a cutting height 8.8 m hydraulic powered support existed no material of the large diameter cylinder leg,available processing and manufacturing equipment and others would hard to meet the requirements.A study was conducted on the powered support type set up,the powered support central distance determination,the leg cylinder diameter selection and manufacturing,the high strength steel material development and welding technique study and other aspects.Finally,the ZY26000/40/88D mode powered support was determined,the central distance of the powered support was 2.4 m and the cylinder diameter of the lag was φ 600 mm.An optimized processing and manufacturing technique was formed to effectively ensure the product quality.The ZMJ06 high strength steel material was jointly development with steel company.The yield strength was 890 MPa,would effectively reduce the weight of the powered support and the total weight of the powered support could be controlled within 100 t.At present,the 8.8 m high cutting hydraulic powered support was successfully passed the test of the national certification organization and the excellent effect had made a good technical reservation for the late batch production.
Keywords：8.8 m hydraulic powered supportmanufacturing techniquelarge diameter cylinder leghigh strength steel material
Publication Date：2017-01-01