Dismantling of tower crane

Types of dismantling of tower cranes

A dismantling of tower crane refers to the process of carefully dismantling a tower crane. According to the dismantling of tower crane

There are three main methods for dismantling tower cranes.

• Top-down method

  The most common method is to dismantle the crane from the top to the bottom. A smaller crane or demolition ball will first be used to remove the mast's top or upper section. After that, the remaining parts of the tower crane will be taken down in the same order.

• Lift-up method

  Sometimes, the tower crane's components need to be lifted or raised instead of lowered. This method is used when there is no available space or the components must be removed in a specific order.

• Bottom-up method

  It is the reverse of the top-down method. In other words, it is the least common way to dismantle the tower crane.

In addition to the three main methods mentioned above, there are also some other ways to dismantle the tower crane.

• Push-off method

  It is an indirect method of dismantling a tower crane. In other words, the components are pushed or jacked off instead of pulled or lifted. This method is commonly used when the components need to be removed quickly or when other methods are unsuitable.

• Side-erection method

  The side-erection method is the opposite of the top-down method. This means that the crane components are erected or assembled on the side instead of on the top. This method is used when the sideways space is available or when other methods are unsuitable.

Specification & maintenance of dismantling of tower cranes

Specifications of dismantling of tower cranes.

• Type: Cranes dismantling have two basic types: self-dismantling cranes and standard cranes usually assemble with an external crane.
• Parts: The dismantling crane has many parts: the mast, the hub, the main frame, the arm( or jib), the undercarriage, the counterweight, the hoisting system, the base, the pinch control, etc.
• Weight: The tower crane dismantling weight depends on its parts and materials. A standard tower crane's counterweight can be even over 100 tons. For example, a Liebherr 357 EC-H 45/8 tower crane's counterweight weighs almost 121 tons. The whole of them can be dozens or even hundreds of tons.
• Power: The power of dismantling cranes can be dozens of tons to even hundreds of tons, depending on the sizes and models.

Maintenance of dismantling tower crane:

• Keep it Clean: It is important to keep the dismantling crane both inside and out. Special attention needs to be paid to areas that are tough to see. Regular cleaning will prevent the build-up of any kind of residue or dirt that might have a negative impact on structural integrity and functioning parts, thus extending its lifetime.
• Lubrication: Regular lubrication of moving parts, like bolts and pins, is necessary for smooth operation over time. It can also reduce the speed at which things wear out and prevent them from getting rusty.
• Inspections: Regular inspections play a crucial role in identifying early signs of damage or any potential issues. Conducting thorough inspections on a frequent basis keeps the tower crane in good condition by promptly addressing any emerging problems. This ultimately helps to maintain its optimal performance levels throughout tower crane dismantling projects.
• Repair or Change: If any issues are found during the inspections, they need to be fixed immediately. For example, rusty areas could be scraped off and painted over again, while damaged parts may require replacement or repair. Addressing problems promptly helps prevent further deterioration of the crane's condition.
• Safety Measures: Safety measures on a dismantled tower crane should also be maintained. The anti-collision system of a tower crane, for example, should be taken care of all the time. This requires a regular inspection of the device, which is also known as the anti-collision system. It helps to prevent any collision between the crane and other structures, thus ensuring the safety of both workers as well as the surrounding environment. Moreover, it could be better if the device didn’t collide with others, either, so it should also be maintained like this.

Uses of dismantling tower cranes

A dismantling crane is used to dismantle tower cranes. It can remove large and heavy parts of the tower crane by lifting or pulling them apart. Dismantling cranes are also used to transport pieces of the tower crane away from the construction site.

Dismantling cranes are available in a variety of sizes and configurations. Mobile cranes are the most common type of crane used for dismantling tower cranes. Nevertheless, tower cranes are often used to dismantle other tower cranes. This is because tower cranes can take large and heavy loads and have a greater reach than many types of cranes.

Mobile cranes are commonly equipped with a flatbed trailer or a material handling crane called a monkey to help dismantle the crane parts. A mobile crane has wheels and is towed behind a vehicle. It is commonly used because it is easy to transport to different locations. If a mobile crane is used to dismantle a tower crane, it should have a large lifting capacity and reach.

A dismantling plan is required to safely and efficiently dismantle a tower crane. It should include details on how to securely take apart each crane component and the sequence of dismantling the components.

Usually an operative and a supervisor with a valid licensure are involved in dismantling the tower crane. The supervisor is responsible for developing the dismantling plan while the operative follows the plan to ensure safety and efficiency.

How to choose the dismantling of tower crane

• Size

  The dismantling of a tower crane must be able to handle the weight and size of the tower crane that needs to be dismantled. When selecting a crane dismantling, it's important to evaluate the capacities and sizes of the available options in order to find one that is suitable for the job at hand.

• Components

  A crane dismantling usually comprises several parts: a flatbed truck, drag boxes, crane head supports, rigging, and a crane dismantling plan. The flatbed truck is used to transport the equipment, while drag boxes are needed to hold the loads. The crane head supports provide the necessary stability and support. Depending on the job, different types of rigging may be required to ensure safety and efficiency during the dismantling process. A crane dismantling plan outlines the steps involved in the dismantling process, including the roles and responsibilities of each crew member. This plan is critical to ensuring a smooth and successful dismantling operation.

• Method

  There are two primary methods for dismantling a tower crane: the top-down method and the bottom-up method. In the top-down method, the crane is dismantled starting from its top part to the base. This is usually done with the help of another mobile crane that will lower the sections of the tower crane one by one. On the other hand, the bottom-up method involves starting the dismantling process from the base of the crane to its top. This method also known as the self-dismantling method is suitable for smaller tower cranes.

• Safety

  Safety is a crucial aspect of any crane operation, including dismantling. It is important to choose an appropriate dismantling method, to have a well-planned and executed dismantling process, and to ensure that all crew members are properly trained and equipped with the necessary safety gear. All of these can help to prevent accidents and guarantee the safety of everyone involved in the operation.

dismantling of tower crane Q and A

Q1 What is the difference between a dismantling and a demounting tower crane service?

A1 A dismantling service refers to taking apart the entire crane, including accessories and attachments. In contrast, a demounting service may involve dismantling only specific components of the crane.

Q2 What are the trends in the tower crane dismantling services market?

A2 The trends in the dismantling services market may include the growing demand for demounting services across residential, commercial, industrial, and infrastructure sectors.

Q3 What are the advantages of professional dismantling services?

A3 Professional dismantling services ensure safe and secure removal of the tower crane, compliance with safety regulations, and minimization of damages. They also enable timely project completion.

Q4 What are the methods of dismantling a tower crane?

A4 The most common methods for dismantling a tower crane include the top-down method, bottom-up method, and helicopter method. The suitable method will depend on the crane's size, location, and other relevant factors.

Q5 Who conducts the dismantling operation of a crane?

A5 Qualified and experienced professionals should conduct the dismantling operation. These individuals will have the skills, expertise, and knowledge to safely and efficiently dismantle the crane.