Cantilever Crane‌

This type of crane is widely used in light industries. Damavand designs and manufactures this type of crane, which is 1 to 8 tons and has an arm length of 8 meters. The crane structures are designed according to the Din4132 and AWS D14-1 standards and are manufactured according to the latest technology in equipped workshops. The materials used in these cranes are S235JR-S275JR-S355JR. The advantage of this type of crane is that it can be installed in halls that do not have the conditions to install overhead and monorail cranes in sufficient numbers. Usually, in halls with injection machines or lathes or other machines arranged in large numbers and require a crane to continuously charge and discharge the machine, it is better to use this type of crane. In this way, it is possible to install more cranes at lower cost and faster performance in a limited space. This type of crane is usually installed at low altitudes. There have been cases of this type of crane being used in heavy industries, especially steel industries, to move ancillary equipment at low altitudes.

What is a cantilever crane?

‌ A cantilever crane is a type of crane that consists of three End carriages and one load-carrying beam (arm). The shape and method of connecting the girder to the End carriages varies depending on the conditions of the workshop, and the designer changes it according to the customer's needs. In this type of crane, the winch is usually installed under the girder in a hanging position or next to the girder in a hanging position (low headroom) and moves along the arm. The girders move on the hall rails (girder) by six steel wheels, which usually have two drive wheels (with a gearbox motor) and four moving wheels. This crane is used in the machinery, machining, food, textile, etc. industries. As you can see in the figure, this type of crane is connected to the column of the shed or workshop. This crane can move along the hall and also along the arm. Cantilever cranes have a maximum of six movements (6 functions); Up and down movement of the lifting hook (2 functions), left and right movement of the lifting winch (2 functions), and back and forth movement of the entire crane girder along the length of the hall (2 functions). The combination of these 6 movements is possible with the help of the design of electrical circuits in the crane's electrical panel.

Cantilever crane applications

Due to the weight capacity of this type of crane, they are usually used in workshops with long halls for packaging, assembling heavy parts, production lines, manufacturing parts, etc. This type of crane is usually used for movements of about 5 tons, but it can also be designed for higher weights on a custom basis. The variety in capacity and easy installation capability has made this crane one of the most popular choices in light industries, although this type of crane can also be widely used in heavy industries. The limitation of this type of crane is simply the strength of the hall structure on which this crane is supposed to move. The more the load capacity and arm length of this crane increases, the stronger and more solid the hall structure must be. The difference and variety of cantilever cranes are mostly in the type of girder connection to the End carriage and also the length of the relevant arm. This difference is related to the specific conditions of the hall in which the crane must be installed.

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Cantilever crane components

Cantilever cranes are very simple. They consist of three parts in total: the first part is the winch assembly, which consists of wheels, motors, chains, wire ropes, etc. The second part is the girder beam which the hoist is installed under it, and the third part is the End carriage, by which the assembly moves on rails along the hall.

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Cantilever Crane Design

The design of cantilever cranes is directly dependent on the amount of load it is supposed to move. In this type of crane, the beam length in the standard state cannot exceed 8 meters. Based on the type of use and the amount of load, the beam length must be carefully calculated and optimally designed. If accurate calculations and design are not made, the possibility of danger during use will be very high.

Cantilever Crane Installation

After designing and manufacturing the crane, the final product is transported to the project site for installation. Damavand's assembly and commissioning team will assemble and install the crane at the desired location as soon as it arrives. This installation itself requires a high level of experience. The smallest error in installation can lead to irreparable accidents. Also, the long life and need for less maintenance of the crane itself are the result of a successful and standard installation. To improve quality and customer satisfaction and by having a well-equipped and suitable workshop space, Damavand pre-assembles and pre-commissions all cranes at the factory before sending them to the customer to ensure the quality and accuracy of its product performance. After ensuring the quality, the manufactured product is loaded and sent for installation.

Cantilever Crane Repairs and Maintenance

After installation and commissioning, the crane requires maintenance and inspection at certain intervals. In cranes, various parts such as wire ropes, wheels, and motors must be inspected and maintained regularly. The crane structure must also be inspected at specific periods. This will increase the life of the crane and prevent damage and potential hazards. This is also necessary for electrical and electronic devices, shock absorbers, and girder wheels. Of course, every device needs repairs after a while. Usually, most of the breakdowns in cranes are related to consumable parts that must be replaced promptly. Also, parts usually break down due to improper use. Drives, gearboxes, electrical systems, etc. can lose their efficiency after a while for any reason. You can ensure that your crane is operating in good and safe condition by reading the crane repair and maintenance manual and performing timely inspection and maintenance in accordance with the standards and conditions stated in the manual.