JL7020 Topkit Tower crane for construction site

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1 unit
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100 unit/month

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Description of  TOWER CRANE JL7020

1) JL7020 tower crane has competitive price and excellent quality, suitable for all kinds of construction project and can work under all kinds of work condition.

2) This kind of 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;

3) 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 struction, which enables heavy load low speed and light load high speed.

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

5)The machine has scientific layout and beautiful appearance. The operator's room is set independently on one side, with good vision field. It creates a good working environment for the operator

 

 

SPECIFICATION of  TOWER CRANE JL7020

  • Max. working range 70m, tip lifting weight 2T and Max. lifting weight 12T.

  • Hoisting mechanism fitted with three speed motor, stable braking and less shock when shifting.

  • Trolleying mechanism can provide two operation speeds.

  • Free standing height (m) 59

  • Max height with attachment (m) 200

  • Working range can be adjusted(m)70/65/60/52/48

  • Min working range(m)2.5

  • Max lifting capacity(t) 12

  • Tip load @ 70m(t)2.0


Packaging & Delivery of TC7020

40HQ container

25~30days after deposit












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Q:When the tower crane top height is more than meters
Three, lifting and installation, demolition works(1) lifting projects with unconventional lifting equipment and methods with single lifting weights of 100kN and above.
Q:How did the tower crane rise on the construction site? Fifteen
In the table below the tower crane is the upper part of the tower body has four jacks, the top of the cage tower (tower of each section is called a tower cage) a little bigger than the following (which can be installed under a small tower, heightening cage) need to jack up above "high rise to work, just a small tower added into the big cage, the cage towers bolted, or tall tower cage can be fixed.
Q:What are the luffing, slewing, and walking points of a tower crane?
The luffing of a tower crane is the forearm of a crane;Slewing means the steering mechanism of a crane;Walking means the walking trolley on the luffing range of a crane
Q:How to distinguish self lifting tower crane with counterweight and lifting tower crane without counterweight
2 the tower crane without counterweight is mainly the city fast loading tower crane. It is characterized by the absence of balance arm, and it is impossible to have counterweightThe layman can not tell the can see the appearance, there are long steel structure before and after the weight of the tower body, and no weight of the tower body with only one steel structure (i.e. jib crane, structure)
Q:Operation points of tower crane (tower crane)?
Slewing bearing: tower crane is one of the most critical components, mainly to bear overturning moment and vertical load. After the failure, the demolition and replacement is extremely difficult, loss of large, so you have to check carefully to do maintenance, each 200H must be a senior grease lubrication from the rotary bearing surface, until now exudation. Slewing bearing adopts high strength bolt connection, if the pretension is not enough, or long-term operation, do not check, not fastening, will cause loose. If the individual bolts loose, will cause the remaining bolts overload, the consequences will be disastrous. The luffing mechanism only moves horizontally, the load is light and the line speed is not high, so it should be easy to master and operate. However, the amplitude involves the change of the lifting torque, and if there is no stopping in time, there will be the possibility of over torque. Therefore, the main requirement of variable amplitude operation is stationary parking and accurate positioning. The tower crane is of great height and the hanger is hung longer, so it is easy to swing the hanger when it is running. This is an objective phenomenon. What is called stabilization hook operation is how to make the swinging hook stop quickly, or how to make the hook move with the movement of the crane as soon as possible, and minimize the operation of the swing. The operation of stabilization hook is the skill that the driver should master.
Q:What are the climbing claws on the tower crane?
Climbing is lifting work cylinder claw pole on the standard main limb rod bearing points of the.
Q:What are the safety devices in a tower crane?
Answer: 1: height limit2: lifting weight limiter3: torque limiter4: travel limiter5: speed (maximum speed of force must be more than 40m/min)6: put a device (jib tower crane to move) must have7: the rotary limiter (no collector on the revolving part) must have8: car broken rope protection9: anemometer (boom root hinge point height is greater than 50m should be set)10: windproof device (rail type)11: buffer and end stop12: Rail sweeping plate (rail)13: protective cover14: derailment device15: emergency power off switch (red mushroom head)
Q:In order to ensure the stability of tower cranes, generally along the height of the tower and building a number of meters attached
Self lifting tower crane tower 45 meters high to prevail, such as height of over 45 meters, each increased to 10 meters (less than 5 meters, excluding) demolition costs increase 20%, off-site transportation costs increased by 10%.
Q:When building tall buildings, where is the bottom of the tower crane installed?
The installation of tower cranes is certainly a guaranteeThe installer is dangerous,
Q:What are the types of cranes?
First, lifting machinery according to the way of work can be divided into light and small lifting equipment, cranes and elevators three categories. (1) light and small lifting equipment mainly refers to lifting machines with only one lifting device. There are jacks, pulleys, electric hand operated gourds, etc.. (2) crane refers to lifting machines that can not only lift vertically but also move horizontally. Such as bridge cranes (also known as driving or crane), automobile cranes, tower cranes and so on. (3) lift refers to the fixed position, lifting fixed line, traction wire rope, with slide limit, lifting the luggage belt. It includes all kinds of elevators, winches, winches, etc..

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