Large gantry cranes are the most common lifting and handling equipment used in industry and construction. They are often used for heavy lifting and moving tasks in industrial environments such as ports, construction sites, and manufacturing facilities. Gantry cranes produced by CE approved grúa pórtico grande supplier are equipped with a lifting mechanism that can lift and lower heavy objects. The mechanism usually includes a crane or winch system, which may be electric, hydraulic, or powered by other means, depending on the crane design. It is characterized by its tall, rigid steel structure spanning an area, supported by legs or columns on either side.
1. Preparations before installation of gantry crane:
- Before installing the large gantry crane, you should go to the site to survey the site and analyze the measured data, and formulate a proper crane installation plan so that the gantry crane installation work can proceed smoothly;
- Prepare and inspect all required materials (various tools such as wrenches, crowbars, vise, etc.) and equipment (various equipment used such as welding machines, gas cutting tools, etc.);
- Before installing the gantry crane, allocate personnel, clean the site, and set up obvious construction signs to ensure that the construction can proceed normally;
- Use truck cranes as hoisting equipment. The truck cranes are arranged according to actual needs. When the span and tonnage are large, two truck cranes are needed. When the span is small and it is a single-beam gantry crane, one truck crane can be used for lifting.
The installation process of the large gantry crane can be divided into two parts, the installation of the outriggers, the installation of the lifting main beam and the installation of the lifting trolley. The legs of the gantry crane are tilted, so the lifting is also tilted. The requirements for hitching hooks and accuracy are relatively high. The main beam of the gantry crane is spliced in the middle at large spans. The gantry crane trolley is generally equipped with a rainproof device in open spaces.
1. Large gantry crane outrigger installation:
- Use a truck crane to place the trolley’s floor beam on the baseline of the floor beam crane track, adjust the distance, and tighten the floor beam trolley.
- After lifting, tilt the axis of the outrigger to meet the design requirements.
- Adjust the relative position of the outriggers so that the alignment and verticality between the outriggers and the lower beam comply with the design.
- Stabilize the legs. After the outriggers and lower crossbeam are installed, cables or auxiliary supports need to be used to stabilize the outriggers and lower crossbeam.
2. Installation of main beam of grúa pórtico grande:
- According to the actual measurement conditions, before hoisting the main beam, make two station positions for the truck crane within the working radius of the truck crane, so that the two main beams can run as close to the ground beam as possible.
- Inspect machinery, arrange, connect, bundle and other tools.
- When raising the main beam 1 to 2 meters above the ground, hang it in the air for more than 5 minutes. Continue hoisting after confirming that there are no mistakes. At the same time, raise the height of the two lifting arms so that the main beam can be docked with the outriggers.
- Two gantry cranes used to assist in hoisting need to work under the command of the same person.
- When the main beam is raised to a height of 0.5~1m above the outriggers, adjust it so that it is roughly opposite to the connecting flange of the outriggers. Then slowly lower the main beam, move it towards the flange on the outriggers and tighten the flange bolts. Insert the diagonal pin guide into the middle, adjust the position, and finally make the main beam sit on the support leg.
- Use a torque wrench to install the connecting bolts and secure them.
- Use a truck crane to lift the main beam arch frame at the flanges of the two main beams in a manner similar to the previous main beam installation.
- Then it is necessary to check and measure the installation accuracy through instruments, and adjust the places that meet the requirements until the design requirements are met.
- Remove the leg stabilizers.
3. Installation of gantry crane trolley:
- Choose a suitable working position for the truck crane to facilitate the installation of the trolley.
- Lift the trolley, 1~2m away from the support, check whether the trolley is level, confirm that the crane spreader is fastened, and continue lifting and installing.
- When the trolley is raised and hoisted to a suitable height, then rotate the truck crane so that the trolley is located on the main beam, roughly aligned with the trolley track, then slowly lowered, and finally aligned with the trolley track and positioned properly.
The above are the steps for installing a gantry crane. In addition, there is a lot of detailed work, such as debugging the mechanical parts of the crane and debugging the electrical parts of the crane. Special note: Cranes are special equipment, and the installation of gantry cranes also requires professional installation. It is strictly prohibited to arrange personnel for installation at will.
As a well-known chinese supplier large gantry crane factory, SEVENCRANE is a professional company specializing in the export and sales, installation, disassembly and maintenance of lifting equipment. It also provides professional technical services, project management, transportation and installation, maintenance and other comprehensive software. service support. If you have any questions about european standard large gantry crane price, please feel free to call our consultation hotline or click the live chat button for consultation. We will give you a quote within 24 hours after receiving the message.
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