Shanghai Jintai SG50A hydraulic grab has entered the Taiyuan Metro Line 2 project for two weeks. During this period, many industry friends visited the site or consulted for information, which gave Jintai the latest SG50A. s concern. To this end, we collected the operation records of the SG50A construction in the first ten slots of the mining station of Taiyuan Metro Line 2, and organized this information into the construction case of SG50A to share with you. Construction time: June 22-25, 2016 Construction site: Taiyuan City Subway Line 2 mining station site Construction equipment: SG50A Geological conditions: soil layer, soil clay layer, silt layer Slot section specifications: A / (thickness) 800mm * (long) 6800mm * (deep) 27.09m Construction record: A slot section - 0.8 m thick, 6.8 m wide, 27.09 m deep, three catches complete a slot. In slow gear construction (winding machine lifting speed 22-24m/min, lowering speed 28-30m/min), it takes 7 hours, verticality ≤ 2/1000, fuel consumption 260 liters, average fuel consumption per hour 37 liters, fuel consumption per cubic centimeter Rise. B slot section - 0.8 m thick, 6 m wide, 26.5 m deep, three catches complete a slot. With fast gear construction (winding machine lifting speed 36-39m/min, lowering speed 61-71m/min), verticality ≤ 2/1000, fuel consumption 200 liters, average fuel consumption per hour 36.36 liters, 1.57 liters per cubic fuel consumption. The SG50A continuous wall hydraulic grab is an upgraded version of the SG46A, one of the mainstream products of the Shanghai Jintai SG series. Based on the reliable and stable market evaluation of SG46A, in order to adapt to new emission standards, further improve construction efficiency and reduce energy consumption, the SG50A continuous wall hydraulic grab was developed. Compared with the SG46A, the SG50A has the advantages of higher groove formation efficiency, greater deep trench excavation capability, lower unit fuel consumption, and further improvement in control system and stability. The SG50A presents a number of highlights in system upgrades and improvements: First, the powertrain is upgraded to a Cummins QSM11 (266 kW) engine that meets Euro III emission standards, and unit energy consumption is reduced. Secondly, the hoist motor, reducer, and wire rope arrangement are used. Both upgrades and improvements, the improved hoisting system can effectively reduce the loss of wire rope, while the overall lifting force is increased from 46 tons to 50 tons, the lifting and lowering speed of the grab is also improved, and the hoisting is short. The stroke fast release impact function increases the excavation ability of complex formations; again, the SG50A is more comfortable and convenient than the SG46A in terms of equipment handling, in addition to real-time monitoring of visual chemical conditions, automatic brightness adjustment of the display, bucket offset alarm, hydraulic oil level Monitoring, alarming, mast tilt sensing devices and equipment maintenance reminders, etc., can also realize the recording, storage and remote transmission of operational data. One week after the first SG50A entered the Taiyuan subway project, the second one was also on schedule. Today, the two newly painted SG50As are like the “Gemini†along the Taiyuan subway construction, showing not only the effectiveness of the equipment itself, but also the performance. The strength of Shanghai Jintai in the field of foundation construction! (This article is from Shanghai Jintai) Ningbo Haishu Longer Houseware Co., Ltd. , https://www.longerbest.com
B / (thickness) 800mm * (width) 6000mm * (deep) 26.5m 
