China Construction Hydraulic Jib Tower Crane Qtz50 (TC4810)

• Customization: Available
• After-sales Service: 24 Hours
• Warranty: 1 Year
• Model NO.: QTZ50 (TC4810)
• Certification: CE
• Condition: New
• Maximum Lifting Height: 100-150m
• Maximum Lifting Weight: <5t
• Installation: Jack-Up
• Moving Type: Wheel
• Type: Top-Slewing Crane
• Application: Construction Usage, Workshop Usage
• Max. Load: 4t
• Tip Load: 1.0t
• Jib Length: 48m
• Mast Section: 1.5X1.5X2.2m/2.5m
• Free Standing Height: 29m
• Max. Height: 120m
• Power Source: Electric
• Sling Type: Wire Rope
• Tower Crane Type: Slewing Tower Crane
• Transport Package: Nude in Container
• Specification: QTZ50 (TC4810)
• Trademark: Mingwei
• Origin: China
• HS Code: 8426200
• Production Capacity: 50 Sets/Month

Product Description

QTZ50 tower crane is a type of self-elevating tower crane. As the latest type of crane transportation machinery, it is designed with "Tower Crane Computer-designing Platform" as the tool. In the process of designing, group technology, combination design technology and finite element analysis technology are made full use of in combination of international advanced tower crane technology and the demand of domestic building market.  
This machine is the crane with vertical arm support, trolley travel and up-rotary hydraulic jack-up system. Its maximum effective amplitude is 48m and it is the only domestic tower crane type to reach this amplitude. Its maximum lifting moment is 540kN·m. When used alone, its lifting height is 30 m and attaching lifting height 120 m (α=2).
Each speed index of this machine has reached or exceeded national standard.
The weight of this machine (not including counterweight and attached devices) is 21.41 ton, and the overall installed capacity is 25.1kW. With advanced parameters, reliable performance, handsome appearance, excellent quality, simple and practical structure, advanced security devices, convenient service, safety usage and reasonable price, this machine is an ideal type of construction machinery for small and medium size construction enterprises.
2. Lifting technical property
2.1  lifting characteristics:

1. table of lifting characteristics(α=4)

Amplitude m	3-14.79	15	16	17	18	19	20
Lifting capacity t	4	3.94	3.67	3.44	3.23	3.04	2.87
Amplitude m	21	22	23	24	25	26	27
Lifting capacity t	2.72	2.58	2.45	2.34	2.23	2.13	2.04
Amplitude m	28	29	30	31	32	33	34
Lifting capacity t	1.95	1.87	1.80	1.73	1.67	1.61	1.55
Amplitude m	35	36	37	38	39	40	41
Lifting capacity t	1.50	1.45	1.40	1.35	1.31	1.27	1.23
Amplitude m	42	43	44	45	46	47	48
Lifting capacity t	1.19	1.15	1.12	1.09	1.06	1.03	1.00

table of lifting characteristics(α=2)

Amplitude m	3-27.3	28	29	30	31	32	33
Lifting capacity t	2	1.94	1.86	1.79	1.72	1.66	1.60
Amplitude m	34	35	36	37	38	39	40
Lifting capacity t	1.54	1.49	1.44	1.39	1.35	1.30	1.26
Amplitude m	41	42	43	44	45	46	47
Lifting capacity t	1.23	1.19	1.15	1.12	1.09	1.06	1.03
Amplitude m	48
Lifting capacity t	1.00

Table Two
(B)curve of lifting characteristics

Items					Unit	lifting speed
						α=2		α=4
Rated lifting moment					KN.m	540
Maximum lifting weight					t	2		4
Operating amplitude					m	3 - 48
Maximum amplitude lifting weight					t	1.0
Maximum lifting weight amplitude					m	27.3		14.79
Lifting height			Independent type		m	30
			Attachment type			120		60
Outline dimensions of the whole machine	Under-frame				m	6.0×6.0
	Height of whole machine			Independent type		38.284
				Attachment type		128.284
	From boom end to rotary center					48.74
	From balance arm tail to rotary center					11.425
Deadweight of whole machine			Independent type		t	21.41
			Attachment type		t	46.36
Counterweight					t	8.0
Others		Motor total power			kW		25.1
		Max. installation height working wind scale			level		≤6
		Allowed working temperature			0C		-20~40

Matching mechanism list

Mechanism load factor

Hoisting mechanism

JC  40%

Slewing mechanism

JC  40%

Luffing mechanism

JC  40%

Hoisting mechanism

Electromotor

type

YZTD200L2-4/8/24

Rotating speed

r/min

1440

720

220

Power

kW

15

15

4

Reducer

Center distance

mm

460

Transmission ratio

i

12.25

Drum

Diameter

mm

Φ330

Layer number of ropes

number

4

Rope capacity

m

280

Rotating speed

r/min

114

57

11.4

Brake

Type

YWZ-250/45-10

Braking force

N

450

Wire rope

Traction force

N

10000

Specification

6×19-12.5-1770-methyl plating right cross

Hoisting speed

m/min

65.1/31.9

32.6/15.9

13.0/6.4

Rated lifting weight

t

0.8/1.6

2/4

2/4

Minimum stable lowering speed

m/min

≤7

Total weight

t

1.2

Slewing mechanism

Electromotor

Type

YZR132M-6

Rotating speed

r/min

908

Power

kW

3.7

Reducer

type

H-100

Transmission ratio

i

195

Output torque

N·m

10000

Matching slewing bearing

Type

QW. 40.1120

Pinion

Modulus

m

10

Tooth number

z

13

Modification coefficient

x

+0.5

Hydraulic coupling

Type

YOX250A

Slewing speed

r/min

0.6

Number of machine installed

Number

1

Trolleying mechanism

Electromotor

Type

YD100L2-4/6

Rotating speed

r/min

1440

960

Power

kW

2.4

1.5

Reducer

Type

WCJ120

Transmission ratio

39

Wire rope

Specification

6×19-7.7-1550-methyl plating right cross

Linear velocity

m/min

38.6/25.2

Slewing speed

m/min

38.6/25.2

Hydraulic jacking mechanism

Hydraulic pumping station

Working pressure

MPa

20

Power

kW

4

Pump type

GB306

Jack-up cylinder

Rated pressure

MPa

20

Cylinder diameter

mm

Φ125

Rod diameter

mm

Φ90

stroke

mm

1300

Installation distance

mm

1700

Jack-up speed

m/min

0.4

Maximum jack-up force

t

24.6

2.3  power supply parameter:
2.3.1 total power of whole machine:25.1kW
2.3.2 voltage of power supply:~380V±10%
2.3.3 frequency of power supply:50Hz