TOWER CRANE QTZ31.5 lifting mechanism adopts speed regulation by frequency control

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The tower crane is a hydraulic tower crane with swing top, horizontal jib and mobile trolley. It has the hoisting moment for315Kn.m;the maximum hoisting load of 3t and the maximum working radius of 39m.The hoisting height of anchoring tower crane is 25m and that of climbing tower crane is 100m.

The tower crane has ingenious design, beautiful shape and simple structure .It is easy to operate and maintain, and is safe and at a reasonable price .It is an ideal construction machines for construction enterprises. It has hoisting mechanism, swing mechanism, top-rising mechanism and radius mechanism, which can work individually or cooperatively to make a high efficiency. The top-rising mechanism is used to raise or lower tower. The hoisting mechanism has 3-speed electronic motor respectively for high, medium and slow hoisting speeds. It has flexible swing mechanism and radius mechanism and slewing mechanism for vertical and /or horizontal transportation of building materials in one time.

The tower crane has complete and sensitive protection devices such as hoisting weight limiter, hoisting moment limiter, hoisting height limiter, radius limiter and swing limiter to ensure of regular operation. It also has rest platform, guardrail and other protection devices. Driver’s cab is at a side of rib and has big space and wide visual field.

The tower crane has excellent performance and is suitable for hoisting in short civil or industrial buildings or loading or unloading in ports or goods yards

TOWER CRANE QTZ31.5  lifting mechanism adopts speed regulation by frequency control

 

1 Main technical Parameters

 

 

Name

Unit

Index

QTZ31.5

Nominal hoisting moment

kN.m

315

Max. hoisting weight

t

3

Rated hoisting weight at jib nose

t

0.734

Working radius

m

2.5~39

Height

Independent

m

25

Attached

m

100

Hoisting

Speed

Ratio.

 

2

Hoisting

speed

m/min

42/21/7

Swing speed

r/min

0.45/0.7

Radius speed

m/min

33

Top-hoisting speed

m/min

0.7

Weight(independent)

t

19.5(21)

Ballast weight

t

5

Max. swing radii

m

39.75

rear swing radii

m

10.37

Max. working wind speed

m/s

20

Max wind speed for top rising

m/s

13

Working temperature

-20~40

 

2 Technical Parameters of Main Parts

 

 

Name

index

hoisting structure

Electric

motor

model

YZS200L1-4/8/24

power

kW

15/15/4

Rotating speed

r/min

1440/730/220

Decelerating motor

model

JZQ400

Central distance

mm

400

ratio

15.75

Arrester

model

YWZ-200/25

Braking moment

N.m

200

Hydraulic propeller

YT1-25

Steel wire

6*19-12.5-1670-I-right twisted

swing mechanism

Epicyclical reducer

model

XX4-63

Reducing ratio

195

fluid coupling

YOX-220A

Slewing ring

011.32.1120

Electric

motor

model

YD112M-6/4  B5

Power

kW

2.2/2.8

Rotating speed

r/min

950/1440

radius changing mechanism

Electric

motor

model

Y100l2-4

Power

kW

3

Rotating speed

r/min

1430

reducer

model

WCJ-120

Reducing ratio

38

Steel wire

6*19-6.2-1570-I-right twisted

Lifting mechanism

Electric

motor

model

Y100L2-4  B5

power

kW

3

Rotating speed

r/min

1430

Hydraulic oil cylinder

HSGK-125/90-1320

Rating pressure

MPa

16

 

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When the power supply fails, you should first remove the things that are stuck in the gear!
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