As a Tower Crane Manufacturer, share with you.
As we all know, tower cranes play an indispensable optimus prime role in construction, transportation and other industries due to their towering posture and a huge pulling force. However, how to maintain the balance of the tower crane has become an unforgivable problem in safety products and even in the design and manufacture of the tower crane.
As you have learned from basic mechanics, a lever consists of three parts-a power arm, a resistance army, and a support point. The length of the power arm multiplied by the power applied to it is equal to the product of the length of the resistance arm multiplied by the resistance encountered, that is, the moments at both ends are equal, and the balance of the lever can be maintained. Although the structure of the tower crane is very complicated, it can be regarded as a lever as a whole. The counterweight and the force of the lifted object on the crane are the two forces added to this lever.
Flat Top Tower Crane
Unlike ordinary levers, the common center of gravity of the crane, heavy object, and counterweight will not be out of the base platform (or supported by wheels on the rails) when the counterweight of the tower crane performs different lifting tasks. Range, because the line of gravity of the object must be within the support surface of the support. Therefore, tower cranes or other cranes installed on the platform at the construction site always have a mechanism to adjust the distance of the balance weight from the support point so that the torque can be balanced, so that when lifting heavy objects smoothly. No tipping will occur. It is worth mentioning that if this condition is not met, for example, the weight being lifted is too heavy or the balance is not heavy enough, so that the center of gravity of the crane is out of the platform after the load, the tower crane will fall, causing a dangerous situation.
Generally speaking, in the upper part of the tower crane, there are two fixed pulleys and a movable pulley (pulley group). The electric winch is used to pull down the steel cable, one end pulls the weight, and the other end adjusts the balance according to the gravity of the weight. The distance between the two, so that the two ends are aligned, raises the building material to a high place.
In the lifting operation, the speed of turning and luffing is not required to be too fast, but it must be able to start and brake smoothly, to achieve stepless speed regulation and frequency conversion control is ideal.
Tail size, component weight and outer porch size.
The tail dimension of the lower swing crane is the maximum turning radius from the turning center to the tail of the turntable (including the weight), and the tail dimension of the upper swing crane is the maximum turning radius from the turning centerline to the tail of the balance arm (including the weight). The tail size of the Flat Top Tower Crane is an important parameter that affects the installation and disassembly of the tower crane and the turning operation.
The size of the outer corridor of the weight of each component of the tower crane is an important parameter for the tower crane during transportation, lifting and disassembly.
Our company also sells Top Kit Tower Crane, welcome to consult.