Hoisting mechanism 55JLF30

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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:55JLF30

Rated single rope tension(kN):30

Magnification:4

Rated power of the motor (kW):55

Working frequency(Hz):6-50-100

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

Hoisting capacity(t):12-12-6

Rope capacity(m):500(5 layers)/630(6 layers)

Nominal Diameter of wire rope (mm):Φ18

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Q:Tower crane TC6013A-6-A2, what does "A-6-A2" mean later?
TC6013A-6-A2:TC is the abbreviation of tower crane, and 6013 is crane lifting moment, which means that 60 meters long arm tip can lift 1.3 tons. A says Model 6 means lifting capacity of 6 tons. "A2" means code.
Q:The earthing resistance of tower crane shall not be greater than that of the tower crane
Three. Technical specification for temporary power safety on construction site JGJ 46-20055.4.2 within the construction site crane, derrick and Longmen machinery equipment, metal structure and steel scaffolding and under construction in construction projects, when lightning protection devices in adjacent buildings, structures and other facilities outside the protect zone of lightning arrester, lightning protection device should be installed in accordance with the provisions of.5.4.7 lightning protection electrical equipment machinery, connected to the PE line must repeat grounding at the same time, with a repeat of the mechanical and electrical equipment grounding and lightning protection grounding machines can share the same grounding body, but should be consistent with the repeated grounding resistance of grounding resistance requirements.The electrical equipment of 9.2.1 tower crane shall comply with the requirements of the current national standard "safety regulations for tower cranes" GB5144.9.2.2 tower cranes shall be subjected to repeated earthing and lightning protection grounding as specified in Clause 5.4.7 of this code. The earthing device of the track type tower crane shall comply with the following requirements:L the two ends of the rail are respectively provided with a grounding device;The joint of the 2 track is electrically connected, and the ends of the two tracks are electrically connected in the loop;3 long track every is not more than 30m and a grounding device.
Q:Equipment safety of tower crane
The boom of a tower crane is divided into two types: horizontal and compressed arms. When the movable arm is horizontal, the carrier car runs along the horizontal arm with variable amplitude and amplitude, and the movable arm is longer, but the boom has a larger deadweight. The arm for the strut type when the tractor boom luffing mechanism pitch amplitude, amplitude motion than horizontal smooth, but its relatively small weight.The weight of a tower crane varies with its amplitude. The product of the weight and the amplitude is called the load torque, which is the main technical parameter of the crane. Through the rotary mechanism and slewing tower crane, lifting height, rotation and walking the inertial mass, so it needs to have good control performance, especially the lifting mechanism can fast, slow, heavy and light load installation fretting. In addition to the general use of resistance speed regulation, but also often use eddy current brake, FM, pole change, SCR and mechanical and electrical joint speed regulation. When the crane in the layout to drawing, especially in real estate development area, residential buildings, such as tower crane, but also to consider the safety distance of adjacent tower crane, two in horizontal and vertical direction to ensure the safe distance of not less than 2m, the adjacent tower crane tower crane and interference can not occur. Try to ensure that the tower crane in the wind is too large to be free of rotation. The safe distance between the rear arm of tower crane and adjacent buildings shall be no less than 50cm. The safe distance between tower crane and power line meets the requirement.
Q:What is the calibration value of a tower crane?
Three, gravity moment MThe product of amplitude L and the corresponding lifting objects called Q gravity lifting moment, the unit is kN - M.Tower crane capacity is based on lifting moment representation. It uses the product of the maximum working range and the corresponding maximum lifting load as the calibration value of the lifting moment.Four 、 lifting height HIt refers to the vertical distance from the surface to the parking level of the crane sling allows the highest position. The unit is m.Five, work speed1. lifting speed (down) Vn - stable state of motion, the vertical displacement velocity of the rated load. The unit is m/min.2. crane (CART) running speed of Vk, stable state of motion, the running speed of the crane. The operating speed of a crane with rated load on the horizontal (or horizontal rail) surface, at the height of 10m away from the ground, and when the wind speed is less than 3m/s.
Q:Are tower cranes the same as tower cranes?
Tomato, you tomato, potatoes, you potatoTalent exchange of tower crane and tower crane
Q:What kind of bodies are tower cranes made of?
Tower crane is composed of three parts: working mechanism, metal structure and power unit, and control system. The composition and function of the three parts are outlined below.
Q:What are the parts of a tower crane? What are their main functions?
The tower crane is mainly composed of a tower body, door frame, tower, tower cap, boom, arm and other metal structure and balance hoisting, luffing, slewing mechanism operation, composition and electrical system and safety device etc.!
Q:How much height should tower crane work at M?
High building one meter high voltage line to keep the relevant national standard to ensure the forearm and the adjacent adjacent tower crane tower crane standard section has a safe distance of 2 meters, big boom high high tower mechanism area covering more than one meter, the end will need to receive from the nearest cab hook.
Q:What does tower crane 400tm mean?
Lifting torque of 400 tons. Meters, also known as 4000KN/m, refers to the QTZ400 tower crane, the general maximum lifting capacity of 25 tons, big arm 70 meters, the most front-end hanging 5.2 tons, independent height of about 70 meters. Normally we say QTZ40 tower crane is lifting torque of 40 tons. Meters, 400KN/m.
Q:When building tall buildings, where is the bottom of the tower crane installed?
A firm foundation is built before the tower crane is used, and then the crane is fixed to the foundation

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