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Luffing tower crane

Luffing tower crane

Short Description:

The Company has started the research, development and manufacture of luffing boom-type tower crane since 1990s, and is capable of providing a variety of 80t·m-600t·m luffing-boom tower cranes of upper-level slewing and self-lifting models, in outer cage, inner cage and internal climbing types. 

This type of tower cranes are appropriate specially to the construction of hyper-buildings, urban renewal projects and the like.


Product Parameters

PRODUCT DETAIL

Installation type classification

Product Tags

Product Parameters

NTP  Luffing Boom-type Tower Crane

Parameter          Model

QTD80-6T

QTD125A-8T

QTD160-10T

QTD160-12T

QTD260-16T

Main material

Q355B

Load (t)

1.2 - 6

1.2 - 8

2.2 - 10

2.2 - 12

2.9 - 16

Jib length

45

50

55

55

60

free standard height (m)

36.56

36.56

32.73

49.48

49.81

Max height of attached(m)

159.56

198.56

250.48

250.48

250.81

Mast section (m)

1.6 × 1.6 × 3

1.6 × 1.6 × 3

1.6 × 1.6 × 3

2 × 2 × 3

2 × 2 × 3

Number of masts (unit)

9

9

9

12

12

Motor  Power  (kw)

Lifting mechanism

22

30

45

55

75

luffing mechanism

22

30

37

37

63

slewing mechanism

2 × 95N.m

2 × 95N.m

2 × 5.5

2 × 5.5

3 × 3.7

Speed

Lifting mechanism

2M,0~38~76

4M,0~19~38

2M,0~38~76

4M,0~19~38

2M,0~40~80

4M,0~20~40

2M,0~46~92

4M,0~23~46

2M,0~45~90

4M,0~22.5~45

luffing mechanism

15° ~ 85°, 2.4 min

15° ~ 85°, 2.5 min

15° ~ 85°, 2.8 min

15°~85°,2.8 min

15°~85°,2.5 min

slewing mechanism

0 ~ 0.6 r/min

0 ~ 0.6 r/min

0 ~ 0.6 r/min

0 ~ 0.6 r/min

0 ~ 0.49 r/min

Length of wire rope(m)

350

(Take the 8T tower crane as an example)

Project

New Configuration

Old Configuration

Lifting mechanism

mechanism brand

Jiu he

self made

Lifting speed

0~90 m/min

0~90 m/min

FM range

0~100 Hz

0~55 Hz

structure type

L type

π type

Reducer

Spiral bevel gear reducer

Cylindrical gear soft tooth surface reducer

reel

Double thick wire rope slot short thick reel

Slender body

Features

Wider speed range, higher efficiency, smoother transmission and low failure rate

Wide speed range, high efficiency, stable transmission

Rotary mechanism assembly

mechanism brand

Jiu he

self made

Swing speed

0~0.64 r/min

0~0.56 r/min

structure type

Ear plate single axis + column anti-channeling positioning pin

Parallel biaxial connection

Reducer

Jiu he

self made

Output shaft and pinion

Integral

Flat key connection

Features

More compact structure, higher reliability and low failure rate

Large structure

Luffing mechanism

brand

Jiu he

self made

Luffing speed

0~48 m/min

0~38 m/min

structure type

Horizontal

Vertical

Motor

4-pole electromagnetic brake frequency conversion motor

6-pole electromagnetic brake ordinary motor

Reducer

Hardened planetary reducer

Worm gear reducer

Features

Accurate positioning, high transmission efficiency,  stable transmission, and low failure rate

High transmission efficiency

Intelligent integrated cab

Configuration New Configuration Old Configuration
Dimensions 2580×1410×2196 2137×1200×2013
Structure Integrated design of cockpit, electrical cabin, and air conditioning Independent cockpit, no electrical cabin
Linkage Satisfy the basic operation performance of tower crane lifting, slewing and luffing
Newly added: slewing auxiliary brake button, brake indicator, weathervane switch and indicator; lifting braking force detection switch and brake failure alarm; tower crane lifting and adding button, hook anti-sway switch, lifting slow in place switch, Power phase sequence detection indicator None
Seat forward and backward adjustment Fixed seat
Air condition Midea 1P heating and cooling air conditioner Additional configuration
Screen Integrated screen Multi-screen display
User-friendly configuration Door locks, ceiling lights, 220V electrical sockets, wipers, insulated non-slip carpets, hooks, file bags, sun shades Door locks, ceiling lights, 220V electrical sockets, wipers, insulated non-slip carpets

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  • The electronic control system has the following technical characteristics

    1. Brake failure protection function:

    when the mechanism generates abnormal speed (usually after the brake is braked), when the abnormal speed reaches a certain value, the inverter can detect the abnormality in the power-on mode. Under normal circumstances, the inverter will control the motor output Large torque stops the mechanism and outputs an alarm signal.

    2. Anti-twist function:

    The inverter has a built-in anti-twist function, which can reduce the twisting of the standard section of the tower body and thus reduce the probability of loosening the tightening screws, make the tower crane safer and more reliable, increase the life of the standard section and reduce safety accidents.

    3. Constant power function:

    The inverter has built-in automatic constant power control module, the inverter can determine the load size (cargo weight) well during acceleration, and automatically adjust the output frequency according to the load size, greatly improving the working efficiency of lifting equipment .

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    4. Anti-hanging function:

    When the hook, lanyard or cargo of the hoisting mechanism of the crane hangs a heavy object during the upward movement, the inverter can output an alarm signal and give shutdown protection to avoid safety accidents.

    5. Ant speed operation (ultra-low-speed full-load operation):

    The hoisting mechanism can be operated at a low-speed full-load below 0.5 Hz, and as low as 0.1 Hz for some applications. When the driver selects “slow speed”, the driver will then operate the lifting master handle, and the running speed at this time is 1% of the full-load running speed.

    6. Smooth lifting function:

    The inverter has a built-in smooth lifting function, which does not require the operator to jog to pre-tension the wire rope. It can be lifted at full speed. The inverter will automatically reduce the speed when the load increases to tension the wire rope, and then accelerate the lifting.

    Features Of Integrated Cab

    6

    Introduction Of Other Functions

    1. The side sliding window is humanized, and the sunscreen is added;

    2. A coat hook is added inside the cab for the operator of the tower crane;

    3. Add a file box inside the cab for the tower operator to place some drawings and documents daily;   

    1. Outer cage-type

    ●  The standard sections of tower are installed and dismantled integrally, easy for connection, and safe and reliable in operation.

    ●  The tower crane can lift up and down quickly.

    3

    No.

    Name

    No. 

    Name

    No.

    Name

    1

     Embedded leg

    10

    Lifting capacity limiter

    19

    Tumtable assembly

    2

     First section

    11

    Lower slewing support frame

    20

    Torque limiter

    3

    Mast section

    12

    Slewing support

    21

    Electrical system

    4

    Lower jacking cross beam

    13

    Slewing mechanism

    22

    Operating room

    5

     Hydraulic jacking device

    14

    Propeller strut

    23

    Traveling cable system

    6

    Outer cage

    15

    Counter weight

    24

    Jib

    7

    Introduction trolley

    16

    Counter weight traveling mechanism

    25

    Balance beam platform

    8

    Translional section

    17

     traveling mechanism

    26

    Wire rope for maintenance

    9

    Lifting hook

    18

    Hoisting winch

    27

    Counter weight traveling and traction device

    2.Internal climbing-type

    ●  The tower crane is installed inside the building to climb upward with the aid of the building.

    ●  The crane requires no foundation, no additional attachments and standard sections, and low investment, and has advantages such as wider construction coverage and higher working efficiency.

    ●  An internal climbing-type tower crane can be changed to an external attaching-type one, and the cost for change is low. 

    23

    Type

    Tower combination

    Maximum combination height (same as the fixed type)

    1.6×1.5m special section

    QTD160.04 standard section (3m)

    QTD160.24 (integral section)

    H1 (to the jib hinge point)

    QTD160

    1.6×1.6

    1

    6

    1

    30 (50m jib)

    7

    30 (40-45m jib)

    8

    30 (30-35m jib)

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