According to German market research firm, Ceresana, the global bio-plastics market will continue to grow at an average annual rate of 17.8%, and sales in 2018 will reach 2.8 billion US dollars. At present, Europe is the largest bioplastics market in the world, and its demand in 2010 accounts for about 48% of the world's total. In the coming years, the major markets for bio-plastics consumption and production in the world will shift to the Asia-Pacific and South America regions. By 2018, the demand for non-degradable bioplastics will account for more than 47% of the total demand for bioplastics. Bags and sacks and loose-filled packaging will continue to be the main markets for bioplastics, but demand for packaging films, automotive and electronics applications will grow even faster.
Slewing Mechanism and Spare Parts
A slewing mechanism is an essential component of a Tower Crane that allows it to rotate horizontally. It enables the crane to reach different areas of a construction site without having to move the entire structure.
The slewing mechanism typically consists of the following components:
1. Slewing Ring: The slewing ring is a large circular bearing that supports the entire weight of the crane and allows it to rotate. It is usually located at the base of the crane and is designed to withstand heavy loads and provide smooth rotation.
2. Slewing Motor: The slewing motor is responsible for providing the necessary power to rotate the crane. It is connected to the slewing ring and is controlled by the crane operator.
3. Gear Mechanism: The gear mechanism consists of a set of gears that transmit the power from the slewing motor to the slewing ring. It ensures smooth and controlled rotation of the crane.
4. Brake System: The brake system is an important safety feature of the slewing mechanism. It is designed to hold the crane in place and prevent any unintended rotation when the crane is not in operation.
5. Control System: The control system allows the crane operator to control the rotation of the crane. It typically includes joysticks or buttons that enable the operator to start, stop, and control the speed and direction of rotation.
Overall, the slewing mechanism plays a crucial role in the functionality and versatility of a tower crane. It allows the crane to move horizontally, reach different areas of a construction site, and perform various lifting tasks efficiently.
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