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SANY SR250C Rotary Drilling Rig
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Product classification
- PRODUCT DETAILS
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三一SR250主要技术参数
Main Technical Specification序号
No.名 称
Type单位
Unit参 数 值
Parameter1 最大钻孔直径 mm φ2300 Max. drilling diameter 2 最大钻孔深度 m 70 Max. drilling depth 3 整机重量（标准配置下不含钻具） t 71 Weight of overall unit (standard configuration, excluding drilling tool) 4 工作状态钻机尺寸（长×宽×高） mm 8042×4490×21627 Drilling rig dimension in working condition (L × W × H) 5 运输状态钻机尺寸（长×宽×高） mm 14251×3190×3520 Drilling rig dimension in transport condition (L × W × H) 6 发动机
Engine型号 三菱 6D24-TL Model MITSUBISHI 6D24-TL 额定功率/转速 kW 250/2000 Rated power/speed 7 动力头
Unit head动力头的最大扭矩 kN •m 250 Max. torque 动力头的转速 r/min 7-26 Rotational speed 8 加压油缸
Crowd cylinder加压油缸最大加压力
Max. Pushing forcekN 180 加压油缸最大提升力
Max. Pulling forcekN 256 加压油缸行程
Max.strokemm 5300 9 主卷扬
Main winch主卷扬提升力
Lifting forcekN 256 主卷扬最大单绳速度
Max. single-rope speedm/min 63 主卷扬钢丝绳直径
Diameter of the steel wire ropemm 32 10 副卷扬
Auxiliary winch副卷扬提升力
Lifting forcekN 98 副卷扬最大单绳速度
Max. single-rope speedm/min 70 副卷扬钢丝绳直径
Diameter of the steel wire rope20 11 钻 桅
Drilling mast桅杆左/右倾角 ° -6/6 Left/right inclination of mast 桅杆前倾角 ° 5 Front/back inclination of mast 12 转台回转
Rotary table slewing转台回转角度 ° 360 Rotary table slewing angle 13 履 带
Crawler履带宽度 mm 800 External width of crawler (min.-max.) 履带外宽（最小-最大） mm 3190-4490 External width of crawler (min.-max.)
SANY SR250C Rotary Drilling Rig
Product classification
PROVIDE HIGH-QUALITY SECOND-HAND CONSTRUCTION MACHINERY AND EQUIPMENT TO CUSTOMERS AROUND THE WORLD
Annual Sales Volume
Selling to more than 60 countries
Cumulative service customers
FAQ
A common fault troubleshooting for engine failure to start
Rotary Drilling Rig Engine Failure to Start (Fuel Pump Fault)
I. Basic Case Information
- Product: Rotary Drilling Rig
- Model: XCMG XR220D
- Working Hours: 3400
II. Fault Phenomenon
The engine fails to start.
III. Fault Analysis
- The starting motor circuit and key switch circuit were inspected and found to be normal.
- The diesel oil circuit from the fuel tank to the engine was checked for blockage, along with the fuel filter element; both were normal.
IV. Troubleshooting Process
- The oil inlet pipe of the fuel pump was removed, and a large oil output was observed. The hard pipe on the engine common rail was removed for inspection, and a small oil output was found.
- The high-pressure fuel pump was disassembled and cleaned, revealing severe internal wear and impurities such as oil sludge.
- The worn eccentric shaft inside the pump was replaced, and internal impurities were cleaned; the engine started normally afterward.
V. Fault Cause (Conclusion)
Severe internal wear of the fuel pump resulted in failure to build up sufficient fuel pressure, which could not meet the fuel supply pressure required for normal engine start.It is recommended that the customer use higher-quality diesel, replace the filter element in a timely manner, and clean the fuel tank regularly.
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