English Views: 0 Author: Site Editor Publish Time: 2022-11-10 Origin: Site
Truck mounted cranes are an advanced heavy-duty lifting technology used in construction sites, landscaping and mining projects. They allow for easy mobility of heavy loads by lifting, and slewing. They are classified according to the number of booms applied in different operation requirements.
Popular types are the single boom and double boom with a fixed hook. The truck’s crane is located at the back of the loading cab or the rear of the truck. These essential machinery work by a hydraulic lifting technique and telescoping mechanism.
It is controlled by an operator from an enclosed cab, who hoists and rotates the crane up to 360 degrees in all directions and is usually assembled on the truck.
Some of the heavy-duty applications include the transportation of heavy construction materials and shipping containers. Let's get into the in-depth working characteristics of different components of this lifting machinery.
If you are familiar with boom trucks, the mechanism of crane booms is nearly the same. Basically, it is the ‘long arm’ of the crane with a pair of six segments. It is the most prevalent component of all crane models. Its main function is heavy lifting and you can attach a wrecking ball to it for projects involving demolition. The mechanism of the boom crane is closely related to the telescopic system as it is part of it. The operator adjusts the length of the boom using hydraulic cylinders, which in turn determine the length of the telescope. The sequencing valves use control levers, which allow for equal sections.
When an operator hoists the jib of the crane vertically, the resulting mechanism is known as luffing. The jib is powered by a hydraulic or cable mechanism.
The boom is used to attain the desired angle by driving the luffing cylinder. The luffing mechanism allows for a constant height of the hook during operation, while the telescoping system enables the operator to adjust the working range.
Another component of the luffing cylinder is a counterbalance valve, which improves the luffing motion and its speed, preventing problems like hose ruptures, which can cause casualties. An advantage of this mechanism is that it increases handling cycles, which is time effective.
The components involved in these mechanisms are the slewing reducer and hydraulic motor. Their main function is to facilitate the continuous rotation of the slewing table. The slewing is supported by inner and outer rings made of sturdy steel balls located at the center.
The hydraulic motor and slewing table rotation is powered by the crane. This mechanism also allows for the rotation of the reduction gear box.
The stabilizing power is an important parameter of the truck mounted crane operating requirements. For this reason, they have advanced features like spreader plated outriggers, which improve operation safety.
The crane valves are manipulated upwards or downwards using handles at the sides of the frames. The truck operator follows signs of the hydraulic actuator and the direction of the mounting bracket.
There are varying crane models. Most cranes come with two types of legs. Fixed and movable. The legs give the crane its lifting power and stability. The legs lie on the ground and are located on both sides of the truck. Truck mounted crane outriggers are classified into fore legs and rear legs.
They have horizontal and vertical outriggers, which allow for the turning mechanisms. The outrigger is held in a fixed box when the vehicle is running and only opens during the lifting mechanism. The outrigger plays a crucial role in evenly distributing the weight of the vehicle and dispersing the gravity during operation.
This device basically transfers the truck engine's power to other components like the extractor. The power initially passes through the clutch to the extractor, which then transmits the power to the oil pump through a connecting shaft. The hydraulic oil from the oil pump acts as a driver of the hydraulic actuators.
The above is the main component structure of the truck mounted crane, which is also an important measurement indicator affecting the price of the truck mounted crane as well as the selection of the crane. Taking a look at our BOB-LIFT products can save you time and effort during your truck mounted crane selection process. We have an extensive 19-year experience in manufacturing cranes. Contact us for a prompt quote!
