XCMG Kaigong Heavy Industry launches the shield machine

July 09, 2014

XCMG Kaigong Heavy Industry Co., Ltd. successfully developed the first EPB-6390 composite EPB Shield Machine in 2011, and has launched several models so far. The product has been put into metro construction in cities such as Nanjing and Suzhou, and gained unanimous praise from clients and customers.

Prototype and site operation of XCMG Shield Machine

Prototype and site operation of XCMG Shield Machine

Some 83 m in length, 6.5 m in diameter and over 500 t in weight, EPB-6390 shield machine is composed of more than 10,000 parts and has a production period of about 2-3 months. The company cooperates with the world's largest shield machine manufacturer Herrenknecht in the technology R & D of EPB-6390 to keep it ahead in the industry. Based on different geological structures and actual demands, the company can rely on its advanced shield machine manufacturing technologies and processes to customize various types of equipment such as EPB shield machine, hard rock Boring Machine and slurry balance shield machine.

Item	Unit	φ6.45m composite EPB shield machine	φ6.39m composite EPB shield machine
Item	Unit	Parameters
Boring diameter	mm	6440	6390
Segment outer diameter/length	mm/mm	6200 /1500	6200 /1500
Overall length	m	80	74
Total weight	t	475	408
Min. turning radius	m	250	250
Final drive mode/power	KW	Hydraulic/945KW	Electric/675KW
Total thrust	KN	42575	42575
Final drive rated torque	KN/m	5538	4616
Breakout torque	KN/m	6621	6000
Cutterhead rotation speed	rpm	0 – 4.5	0 – 1.5
Geological condition		Soil containing clay, sludge and some weathered granites, where the soft layer is over the hard layer, and the groundwater depth is 0.5-4m	Soil containing pebbles, gravels, sandstones, siltstone, clay, sludge and decomposed stones etc.