Hoisting Mechanism 75JLF45

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Product Description:

Introduction

The products are independently developed and manufactured by our company via absorbing international and domestic advanced technologies.

Natinal Patented products:Patent 1:ZL2009 2 0243653.7

Hoisting Mechanism of Tower crane Patent 2:ZL2010 20226428.5.

Combined-type winding drum used in winch JLF series products adopt the structural style of variable frenquency motor +SNGW reducer+winding drum.S-NGM reducer is employed for the first time in China with the precision of all gears up to over 6 level and features of less noise, compact structure, light weight and convenient maintenance.

Specification

Model:75JLF45

Rated single rope tension(kN):45

Magnification:4

Rated power of the motor (kW):75

Working frequency(Hz):6-50-100

Hoisting speed (m/min):2.7-22-45

Hoisting capacity(t):16-16-8

Rope capacity(m):550(5 layers)/804(7 layers)

Nominal Diameter of wire rope (mm):Φ20

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Q:National standards for tower cranes
Tower crane GB/T5031 - 2008 has been implemented since February 1, 2009. In accordance with the new standards promulgated, chief editor -- China Academy of Building Research Institute of building mechanization of Langfang, Beijing and Hebei respectively in Hangzhou, Nanning held the new standards xuanguan. Luo Wenlong, director of the standard editor and vice president of Li Shoulin, explained the new standards comprehensively. The new standards are quite different from the previous standards, adding a lot of security related content, mainly embodied in the following 3 aspects: 1) the principle of different. Previously considered issues mainly consider the domestic tower crane industry technology status, appropriately reflect the advanced nature, and now is the requirements and international benchmarking, consider safety. 2) different forms of organization. The standard used in scientific research institutes, universities, factory assistant; the preparation unit including Research Institute, and the host plant, supporting enterprises, universities, inspection unit, there are relatively large units on behalf of (rental business), etc..
Q:S930 M50 (M125/75) level jib tower crane about how much money
Do you want to see is that, generally is Sishijiwan
Q:What are the safety devices for tower cranes?
(3) the lifting height limiter, lifting height limiter is used to restrict access to the hook jib head or trolley before, or is dropped to the lowest point (ground or below ground Ruoganmi) before the lifting mechanism of automatic power-off and stop working, to avoid lifting hook over hoisting device touch the boom and the bad.(4) the amplitude limiting device is used to limit the boom does not exceed the limit position in the pitch. An alarm is sounded when the lifting pitch reaches a certain limit, and the power is automatically cut off when the limit position is reached.(5) stroke limiter of car stroke limiter: a trolley type jib head and root, to cut off the circuit car traction mechanism, prevent car offside. Cart travel limiter: used to prevent the crane from derailing.
Q:Tower crane body standard section connection bolt screw upward or downward, why?.
Up or down, there is no change in the firm torque of the connecting bolt. Simply choose to go up or down for convenience. Generally no special requirements, it is recommended that the thread upward, so that it is not easy to rust.
Q:How often should the crane be inspected regularly?
Lifting machines are inspected regularly every two years, and explosion-proof lifting machines shall be inspected regularly every year. Must have the corresponding inspection qualification inspection.
Q:What kind of tower cranes are available? How about the scope of all kinds of tower cranes?
Tower crane is divided into fixed tower crane, mobile tower crane, jack up tower craneThe mobile tower crane is divided into track type, tire type and automobile typeThe jack up tower crane is divided into two parts: internal climbing type and attached typeUsage: loading and unloading concrete by hanging tank for general construction and installation
Q:Brief introduction of ten no hanging criterion for tower crane operation
1, hanging weight more than no mechanical properties allow the crane; 2, the command signal is unknown, the weight is unknown, the dim light to hang; 3 working face, stand or floating active objects not hanging;
Q:The special equipment specified by the state is a periodical inspection cycle, wherein the crane is carried out every many years
Special equipment including boilers and pressure vessels (including gas cylinders), pressure piping, elevator, crane, field (factory) in special vehicles, large recreation facilities, passenger ropeway, regular inspection period of their different. The periodic inspection period of hoisting machinery is usually two years.
Q:How much more than m of tower crane jib winch point height should be equipped with anemometer
The use of 4.0.15 tower crane height of more than 30m should be equipped with obstacle lights, jib root hinge height of more than 50m should be equipped with anemometer.
Q:When building tall buildings, where is the bottom of the tower crane installed?
It's just a little bit needed, and you're right!! As long as the requirements to ensure verticality, no problemBuilding technical requirements, such as Perpendicularity Error of not more than 3 millimeters per 100 meters, can be guaranteed by the building.

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