Topless Construction Tower Crane Qtz50 (PT4808)

• After-sales Service: 24 Hours
• Warranty: 1 Year, One Year
• Certification: CE, ISO9001, CE, ISO9001: 2000
• Condition: New, New
• Maximum Lifting Height: >250m, 150-200m
• Maximum Lifting Weight: >10t, 8t
• Model NO.: QTZ50(PT4808)
• Installation: Jack-Up, Jack-up
• Moving Type: Fixed
• Type: Top-Slewing Crane, Tower Crane
• After-Sales Service: 24 Hours
• Free Standing Height/Max. Height: 35m/120m
• Jib Length: 3---50m
• Application: Container Usage, Mineral Area Usage
• Power Source: Hydraulic
• Sling Type: Wire Rope
• Tower Crane Type: Slewing Tower Crane
• Transport Package: Container
• Specification: QTZ50
• Trademark: MINGWEI
• Origin: China
• HS Code: 8426200
• Production Capacity: 200 Units /Month

Product Description

Topless Construction Tower Crane Qtz50 (PT4808)
1) The crane adopts standard section hydraulic lifting and connecting, and can decide the crane height according to the actual height of the building, and at the same time, the lifting capacity will not be affected.

2) It has high working speed, good speed-adjusting performance, steady operation and high efficiency. Three-speed motor and mono-speed ratio decelerator are applied in the lifting structrue, which enables heavy load low speed and light load high speed.

3) Wide work range and applicable objects. Through replacing, adding and removing some parts and supplementary devicesm the crane can get two working styles: independent and attached, so as to satisfy different requirements. The max. lifting height of attached style is as high as 140m.

4) The machine has complete set of safety devices, which can guarantee the safe and high efficient operation of the equipment. The crane equipped with lifting height limiter, dolly range-change limiter, moment limiter, weight limier and circumgyrating limiter, etc.

5) The crane has scientific layout and beautiful appearance. The operator's room is set independently on one side, with good vision field, it creats a good working environment for the operator.
Technical Performance of Crane
2.1 Technical Performance Parameter Table (Table 1)
Table 1 Technical Performance Table

Item					Unit
Maximum lifting moment					kN.m	630
Maximum working amplitude					m	50
Minimum working amplitude					m	3
Maximum lifting weight					t	4
Lifting height		Power			m	Independent	Adhered
		Two power				35	120
		Four power				35	60
Lifting speed		Two power			m/min	62/31
		Four power				30/15
Rotating speed					r/min	0.63
Derricking speed					m/min	37.5/26
Climbing speed						0.4
Minimum stable descending speed						≤9
Overall dimension	Bottom frame				m	4.5x4.5
	Overall height (independent)					35
	From the end of a suspension arm to a rotation center					50.77
	From the tail of a balance arm to a rotation center					12.5
Total Weight	Structural weight (independent)				t	24.5
	Balance weight			Maximum amplitude 50m		8.6
				Maximum amplitude 48m		8.1
				Maximum amplitude 42m		6.9
				Maximum amplitude 36m		5.7
Total capacity of motor					kW	32.2
Allowable working temperature					ºC	-20~+40
Power supply parameter					50Hz	~380V±10%
Working grade of mechanisms			Lifting mechanism			M5
			Rotating mechanism			M4
			Derricking mechanism			M4

2.3 Lifting the performance table (Table 3)
 

Two magnification
Amplitudem		3~30.6	31	32	33	34	35	36		37		38		39	40	41	42
From the weightKg		2000	1970	1898	1831	1768	1709	1652		1600		1548		1500	1455	1412	1370
Amplitudem		43	44	45	46	47	48	49		50
From the weightKg		1331	1294	1257	1223	1190	1159	1129		1100
Four magnification
Amplitudem	3~17.2		18	19	20	21	22	23	24		25		26		27	28	29
From the weightKg	4000		3824	3600	3400	3215	3050	2900	2760		2630		2515		2405	2305	2210
Amplitudem	30		31	32	33	34	35	36	37		38		39		40	41	42
From the weightKg	2120		2035	1955	1880	1830	1800	1715	1635		1580		1530		1483	1440	1390
Amplitudem	43		44	45	46	47	48	49	50
From the weightKg	1350		1310	1270	1230	1200	1160	1132	1100

48 meters working range
 

Amplitudem	3~31.4		32		33		34		35		36	37		38		39		40	41	42	43
From the weightKg	2000		1960		1891		1825		1764		1706	1652		1600		1550		1504	1459	1417	1376
Amplitudem	44		45		46		47		48
From the weightKg	1338		1300		1266		1232		1200
Four magnification
Amplitudem	3~17.4	18		19		20		21		22		23	24		25		26		27	28	29
From the weightKg	4000	3900		3680		3468		3283		3115		2961	2820		2690		2570		2460	2357	2261
Amplitudem	30	31		32		33		34		35		36	37		38		39		40	41	42
From the weightKg	2172	2088		2010		1936		1867		1822		1740	1682		1626		1574		1524	1477	1430
Amplitudem	43	44		45		46		47		48
From the weightKg	1388	1345		1306		1268		1233		1200

42 meters working range
 

Two magnification
Amplitudem	3~32.9		33			34		35		36		37		38			39			40			41		42
From the weightKg	2000		1996			1928		1864		1803		1746		1691			1640			1591			1544		1500
Four magnification
Amplitudem	3~17.8			18		19		20		21		22		23		24			25			26			27
From the weightKg	4000			3950		3788		3579		3390		3218		3016		2918			2785			2663			2550
Amplitudem	28	29			30		31		32		33		34		35			36			37			38		39		40
From the weightKg	2445	2347			2256		2171		2091		2015		1945		1878			1815			1755			1699		1645		1595
Amplitudem	41	42
From the weightKg	1546	1500

36 meters working range
 

Two magnification
Amplitudem	3~33.2		34		35		36
From the weightKg	2000		1945		1881		1820
Four magnification
Amplitudem	3~18.1	19		20		21		22		23		24	25		26		27		28	29	30
From the weightKg	4000	3800		3620		3427		3252		3092		2945	2810		2685		2570		2463	2363	2270
Amplitudem	31	32		33		34		35		36
From the weightKg	2183	2100		2025		1952		1884		1820