DR1250-63(L1250-63) Derrick Tower Crane

Description
Derrick tower crane is kind of fully hydraulic, upward rotating and movable arm luffing jack-up derrick crane. DR1250-63 luffing tower crane adopts advanced design analysis system for its structure. ADAMS and ANSYS are employed as well. Combined with reasonable loading stress, derrick tower crane has great strength, good rigidity and fatigue resistance. The arm rest is made of high-duty steel pipe. Sophisticated large flexibility, variable cross-section and fusiform design technology is used for structure design, which greatly improves lifting performance of derrick tower crane.

Features
1. Max. load moment of DR1250-63 derrick crane is1250 KN.m. Ma. Lifting load can reach 63 t. And max. radius can be 60 m.
2. Derrick tower crane has various arm length combinations, such as 35m, 40m, 45m, and 50m, 55m and 60m, which can meet requirements of various construction conditions.
3. DR1250-63 derrick tower crane adopts complete hydraulic drive. Thus, luffing tower crane features precise position, high reliability, wide range of application and few stoppages, etc.
4. Three mechanisms of derrick crane employs full frequency stepless speed regulating to achieve light load high speed and heavy load low speed. Besides, the entire range of time is2.2 min. DR1250-63 derrick tower crane is characterized by smooth starting and braking.
5. Advanced control system can match the power between operation mechanism and engine, which saves fuel oil consumption.
6. DR1250-63derrick tower crane is equipped with complete safety protection device and multifunction monitoring meter. Thus, parameters like lifting weight, radius, load moment and arm rest elevation can be displayed timely.

Specifications and Parameters

Rated Load Moment (kN.m)		12500
Lift Height (m)		Multiplying Power		Independent Stationary Type						Dependent Type
		α＝1		45.75						216.75
		α＝2		45.75						108.375
Working Radius (m)		Max.						60
		Min.						4.7
Max. Lifting Load (t)		63
Hoisting Mechanism (Hydraulic Stepless Speed Change)	Multiplying Power	α＝1						α＝2
	Speed (m/min)	0-9	0-20		0-40	0-85	0-130		0-45		0-10	0-20	0-42.5	0-65
	Lifting Weight	32	32		32	14	8.5		63		63	63	28	17
	Rated Pump Capacity (cm³/r)	125 × 2
Jib Lubbing Mechanism (Hydraulic Stepless Speed Change)		Time (min)						2.2(15° to 84.5°)
		Rated Pump Capacity (cm³/r)						180
Swing Mechanism (Hydraulic Stepless                                Speed Change)		Speed (r/min)						0-0.7
		Rated Pump Capacity (cm³/r)						90

Bristol Compressors (Shanghai) Co., Ltd. provides derrick tower crane (derrick crane or luffing tower crane) in China. The tower cranes we provide have been strictly supervised and inspected by national building urban construction machinery quality supervision and inspection center and have achieved eleven patent technologies. With quick development of derrick tower cranes, production bases and representative offices are founded throughout the world, such as China, U.S.A, Germany, France, Japan, Holland and Belgium, etc. For detailed information about derrick cranes, please enter our home page or contact us directly.