EXPERIENCE WITH CRANES AND LIFTING
Transportes Montejo throughout its history has strengthened and materialized with its experience the knowledge in the logistics operations that the client requests, we are experts in lifting processes: loading and unloading of loads. We have specialized in those that are oversized and require engineering studies due to their complex development. However, we also provide support services, such as parts handling with truck cranes, articulated arms, forklifts, among others. All our lifting processes are accompanied by safety procedures, insurance policies extended to loads and certifications, both for equipment, its accessories and the integrated quality system, which support the reliability of our operations.
We carry out enough planning and engineering to propose all possible solutions and alternative routes for your cargo to reach its final destination. We carry out route studies, request special permits, improve the necessary infrastructure, make use of metal bridges and create or improve new roads, depending on the complexity of your logistics project.
Self-propelled modular equipment (SPMT-E), extendable low beds, multi-line modular equipment, Low Beds, High Beds, and other conventional transport equipment are part of our available fleet. All equipment is operated by certified and specialized personnel, guaranteeing the success and safety of operations.
ENGINEERING AND DESIGN
To carry out lifting operations there is a wide variety of equipment and machinery: overhead cranes, mobile cranes, crawler cranes, telescopic cranes, lattice cranes, articulated jibs, electronic rigging on monorails, articulated arms, articulated hydrocranes, lifting platforms, elevators electric, hoists, telescopic handler, forklifts, telehanders, crawling equipment, gantry equipment, strand jack system, among others.
This wide variety of equipment allows the machinery to be the ideal one for what the client requires, since it adapts to the conditions of the terrain and the area of operation, the load, the positioning, the height and the operation. Likewise, more than one team can be combined and complemented in a single operation, however this will require more expertise, knowledge and experience in lifting, as it would be a critical operation.
Lifting is the technical word for lifting and suspending loads. Due to the nature of its process, this is a high-risk activity that requires coordination of the parties involved and security in the state of the equipment to be used. Therefore, operations must be previously socialized with the people who will intervene, an inspection of the area where the radius of the load is verified, the distance of travel must be carried out and thus guarantee that the operation is adequate according to the load capacity table . This should be recorded in the lifting plan and should be socialized at the time of defining roles, responsibilities, risks and their controls and action plans in case of emergencies. Likewise, the area of operation must be clear and under no circumstances may the load on pedestrians be suspended (prohibited area).
To perform a safe lifting operation, the lifting equipment must be positioned on a firm, stable, level surface that has the minimum necessary load-bearing capacity. Load lifting points and rigging accessories should be checked. Loads may be suspended and moved over previously cleared and controlled areas, to avoid movement of people outside the operation. However, these movements must be done delicately, very slowly and without sudden changes of direction, to avoid additional forces to that of gravity from adding to the load, such as oscillation.
It is important not to lose sight of the risks associated with equipment misoperation, structural and stability limits. The first limit, structural, is the one imposed by the material and the configuration of the crane and defines up to what capacity it can load, if it is exceeded, the crane boom will crack or break. The second limit is the stability limit, this defines the maximum weights that can be suspended over certain areas around the equipment; in case of exceeding them, lateral forces will cause the equipment to overturn.
Lifting is a high risk activity, as mentioned above, however when there are unusual conditions, it is considered a critical lift. These uncommon conditions are as follows:
- The weight of the load and associated auxiliary elements exceed 70% of the gross capacity according to the crane table (For a certain configuration, with a radius, an extension and an angle established)
- Lifting with two or more simultaneous cranes in parallel, usually used for verticalization processes.
- Use of additional feather extensions involving unusual methodologies.
- When there are electrical risks or obstructions such as buildings in the area of the maneuver.
- When the access and anchoring area of the crane has conditions that require engineering studies.
- When lifting people. In this case, the crane’s gross capacity must not exceed 50%.
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