L68A1 Mast Section: A Comprehensive Guide to its Features and Applications
18 4 月, 2024
By admin
If you are in the construction industry, you may have come across the term “L68A1 mast section.” A mast section is a key component of a tower crane, which is used to lift heavy loads during construction. The L68A1 mast section is a specific type of mast section that is commonly used in tower cranes.
The L68A1 mast section is typically made up of four panels that are assembled using special fishplate bolts. Two of the panels have telescoping lugs, while the other two do not. The panels with ladder-fixing gussets must be face to face during assembly. The mast section is made of Q345B and Q235B materials, and the dimension of the main chord is 20020 angle steel. It weighs approximately 1500kg and has a dimension of 22*3m.
Understanding the structure and function of the L68A1 mast section is crucial for anyone working with tower cranes. In the next sections, we will explore the working principle and function of the L68A1 mast section in more detail, as well as its detailed explanation of single beam crane, single beam crane structure, and steel structure.
L68A1 Mast Section Overview
If you are looking for a reliable and sturdy mast section for your tower crane, the L68A1 mast section is an excellent choice. This type of mast section is commonly used in tower cranes and is known for its durability, strength, and stability.
The L68A1 mast section is made up of two panels with telescoping lugs and two panels without telescoping lugs. The panels are assembled using 20 special fishplate bolts, and the heads of the bolts are on the outside. The assembling of masts between each other is by means of 8 shafts.
One of the key features of the L68A1 mast section is its force measuring ring, which is used to measure the load on the tower crane. This helps to ensure that the crane is not overloaded, which can cause damage to the structure and lead to accidents. The force measuring ring is fixed on the support of the tower crane mechanism, and the other end is fixed on the guide pulley.
When choosing the L68A1 mast section, it is important to consider the type and safety technical requirements of the overload limiter of the tower crane. Overload operation is very harmful to the tower crane structure, which can cause the downward deflection of the main beam of the tower crane, instability, crack or weld opening of the upper cover plate and web plate of the main beam, as well as the breaking of the boom or body of the tower crane and other major accidents.
Overall, the L68A1 mast section is a reliable and durable choice for your tower crane needs. Its force measuring ring and safety features make it a safe and effective option for heavy lifting and construction projects.
Design Specifications
Material Composition
The L68A1 mast section is made of high-quality Q345B and Q235B steel, which are known for their strength, durability, and resistance to corrosion. The use of these materials ensures that the mast section can withstand harsh weather conditions and heavy loads without deforming, cracking, or breaking.
Dimensions and Weight
The L68A1 mast section has a dimension of 2 x 2 x 3 meters and a weight of 1500 kg. It consists of two panels with telescoping lugs and two panels without telescoping lugs. The panels provided with ladder-fixing gussets must be face to face. The panels are assembled by 20 special fishplate bolts. In every case, the heads of the bolts are on the outside. The assembling of masts between each other is by means of 8 shafts.
Load-Bearing Capacity
The L68A1 mast section has a maximum load-bearing capacity of 12 tons, which makes it suitable for heavy-duty lifting applications. The mast section is designed to withstand the forces generated by the tower crane’s movements and the weight of the loads it carries. It has been rigorously tested to ensure that it can withstand the stresses and strains of daily use without compromising its structural integrity.
In summary, the L68A1 mast section is a high-quality, durable, and reliable component of tower cranes. Its material composition, dimensions, weight, and load-bearing capacity have been carefully designed to ensure that it can withstand heavy loads and harsh weather conditions.
Installation and Assembly
Base Setup
Before installing the L68A1 mast section, you need to prepare the base. First, check if the subgrade and track laying meet the requirements. Then, bury the ground anchor and determine the position of the ground anchor according to the rotating lifting direction of the tower and the total height of the tower body. After that, install the template and fix it with anchor bolts. Make sure that the template is level and stable.
Section Connection Process
The L68A1 mast section consists of two panels with telescoping lugs and two panels without telescoping lugs. The panels provided with ladder-fixing gussets must be face to face. The panels are assembled by 20 special fishplate bolts. In every case, the heads of the bolts are on the outside. The assembling of masts between each other is by means of 8 shafts.
To assemble the mast section, follow these steps:
Install the lower tower body, climbing frame, and rotating part.
Install the tower top and fix it with bolts.
Assemble and lift the balance arm and lifting arm.
Thread the changing width wire rope and lift the first weight block.
Install the lifting arm and lifting arm pull rod.
Make sure that there is no fatigue damage to the metal structure part, fracture damage to the pulley assembly, deformation, damage, and wear of the hook above standard. The paint should have no peeling, and the weight must be piled. Finally, the tower crane should be grounded reliably and well.
By following these steps, you can safely and effectively install and assemble the L68A1 mast section for your tower crane.
Operational Usage
Compatibility with Equipment
The L68A1 mast section is compatible with a variety of tower cranes, including the SYM Tower Crane. Before using the L68A1 mast section, it is important to ensure that it is compatible with your specific equipment. This can be done by consulting the manufacturer’s specifications for the tower crane and the L68A1 mast section.
Maintenance Procedures
Proper maintenance of the L68A1 mast section is essential for safe and efficient operation. Regular inspections should be conducted to check for signs of wear and tear, damage, or other issues that may affect the performance of the mast section.
Maintenance procedures for the L68A1 mast section include lubrication of the bolts and joints, cleaning of the mast section, and replacement of any damaged or worn components. It is important to follow the manufacturer’s guidelines for maintenance and inspection to ensure that the mast section is always in good condition and safe to use.
In addition to regular maintenance, it is also important to follow proper operating procedures when using the L68A1 mast section. This includes ensuring that the mast section is properly secured and supported, and that the load being lifted is within the rated capacity of the tower crane and the mast section.
By following these operational usage guidelines, you can ensure that the L68A1 mast section is used safely and effectively with your tower crane.
Safety and Compliance
Regulatory Standards
When it comes to tower crane safety, regulatory standards are in place to ensure compliance. The current national standard safety regulations for tower crane stipulate that the tower crane must be installed with a lifting limiter. If there is a lifting display device, it must be installed in the cab of the tower crane. Before operation, it is important to check the safety and lubrication of each braking part and structural part, and check whether each limit device and safety device are sensitive and reliable. The tower crane must be reliably grounded, and the shell of electrical equipment shall be properly connected with the body.
Safety Guidelines
In addition to regulatory standards, there are also safety guidelines that must be followed to ensure safe operation of the tower crane. All safety protection devices and limit switches must be complete, sensitive, and effective. The lighting must be good for night operation. It is important to strictly carry out the operation of “ten no lifting,” and the hook and luffing trolley must be received at the specified position when the tower crane is out of service.
Moreover, the tower crane driver must be properly trained and certified. The driver must have a clear understanding of the safety guidelines and regulatory standards, and must follow them at all times. It is also important to conduct regular maintenance and inspections of the tower crane to ensure that it is in good working condition.
By following these regulatory standards and safety guidelines, you can ensure the safe operation of the L68A1 mast section tower crane.
