L46D Mast Section For Tower Crane Masts

products Specification

Type , Model: L46D Mast Section For Tower Crane Masts

Size: 1.6mx1.6mx3m 

Materials: Q345B

Within: Pins, bolts, Ladder, Platform

Process: Blasting derusting, 

Painting:  Under painting , Middle painting, Surface painting.

Our factory produce and supply almost all famous brand tower crane :Mast section, Anchor Frame, Fixing angle ,Adaptor and so on as good quality and price.

L46D Mast Section For Tower Crane Masts

Tower Crane Knowledge sharing：

Construction lift rental industry, and the disadvantages of its operation, management knowledge

Construction lift rental industry has a bad scene, buy construction lift not good character skills, only cheap; Do not improve management skills progress, just for the lowest cost, that this is more money, is a waste

 Do not seek brand improvement, just for cheap access to the market, your price is lower than I am lower than you; Do not seek to strengthen equipment management, to achieve long-term return on investment in machinery leasing, but strive for equipment to pursue short-term profit maximization and so on.

Of course, these phenomena are not the mainstream, but must cause our attention, because let this kind of weather allowed to develop, will bring disaster to all the construction lift rental industry, will be to all the industry chronic self-injury.

The foundation of the construction lift shall be made in strict accordance with the construction drawings of the factory, the embedded bolts of the foundation shall be equipped with the qualified test report of materials, and the acceptance record of hidden works

L46D Mast Section For Tower Crane Masts

the passing test report of concrete foundation shall be provided before the installation of the construction lift. Concrete precast blocks must be used for the construction of lift pressure. Bricks shall not be used. The use of concrete blocks with damaged lifting points and cracked concrete should be stopped.

Construction lifter driver on every day, go off work, have to review the high strength bolt contact and steel structure welding seam and the connecting pin , the movable pulley, wire rope, lifting braking device

 Insurance device, and other important parts , found hidden danger in time the speech or dispelled, it is strictly prohibited to use in spite of. There must be daily inspection records in the operation record book.

L46D Mast Section For Tower Crane Masts

Construction lift shall not be close to overhead transmission line operation, must be online roadside homework, construction lift hook and overhead line water insurance distance must be greater than 6 meters

If the safety interval cannot be guaranteed, must set up safety barriers or blackout construction; No external high-voltage circuit is allowed within the slewing range of the construction hoist big arm Stop the installation and use of the construction lift under the external high-voltage line.

In the thunderstorm scene, when a charged cloud appears over a tall building, the lightning rod and the top of the tall building are induced on a large amount of charge, because the lightning rod needle is pointed, and electrostatic induction, the conductor tip is always collected the most charge

In this way, the lightning rod collects most of the charge. The lightning rod, in turn, forms a capacitor with these charged clouds, because it is pointier, meaning that the area opposite the plates of the capacitor is small

so the capacitance is small, meaning that it can hold very little charge. And it collects most of the charge, so when there is a high charge on the cloud, the air between the lightning rod and the cloud is easily broken down and becomes a conductor.

In this way, the electrified cloud creates a path with the lightning rod, which is grounded. Lightning rods can divert electrical charge from the clouds, making it dangerous to build tall buildings and keeping it safe.

How to correctly connect and adjust the electrical equipment in the preparation work of new tower crane installation

New tower crane installation preparation - how to correctly connect and adjust the electrical equipment

L46D Mast Section For Tower Crane Masts

(1) correctly connect and adjust the electrical equipment according to the local power supply voltage，check all electrical equipment, such as motor, controller, contactor, resistor, collector ring and fuse, over-current relay, etc. Check whether the action and operation are normal, whether the sound of the motor is normal, and whether there is butter in the bearing. Also check that the uncharged parts are well grounded

(2) with a megger check the motor three-phase winding and between each phase winding insulation resistance of casing, its value should be greater than 0.5 M Ω at least. Check the insulation of wires and cables, and wrap or replace the damaged parts.

(2) considering that changing the wiring mode of the motor or electrical appliances or replacing electrical appliances will have an impact on their rated output power or increase the input current, it is necessary to re-adjust the power supply protector .

(3) whether the rated working voltage of the three-phase motor, electromagnet and various control appliances is consistent with the local power supply voltage, if not, it shall be adjusted accordingly, and the power supply voltage must meet the requirements of the tower crane

Or change the wiring of the electrical appliances of the tower crane and remove the electrical appliances with different rated voltage to make them meet the requirements of local power supply voltage.

L46D Mast Section For Tower Crane Masts