The members of the Crane Manufacturers Association of America (CMAA) produces engineering and technical standards and specifications for the safe design, engineering, manufacturing, operation, and service of overhead cranes. The standards, produced by the CMAA Engineering Committee, cover a broad range of crane types. CMAA standards are the leading global resource for the safe construction and utilization of overhead lifting systems. They are also part of CMAA’s full library of technical publications, which also includes guidelines and checklists for safety, maintenance, and use. To ensure the safest equipment and operation, here are five overhead crane specifications and standards you should know.
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Information contained in CMAA Spec 70 helps both purchasers and users of cranes, as well as members of the engineering and architectural professions. While much of its information is of a general nature, the items listed may be checked with individual manufacturers. Comparisons of different systems can occur based on those details, leading to the selection of the optimal equipment for a given application. The latest version of this publication incorporates new technical standards. Further, it features a revision of the hoisting ropes section to include consideration of additional rope constructions. Likewise, the document features a new keys and keyways section to address allowable stresses, as well as significant additional information about drum design.
Promoting standardization, CMAA Spec 74 provides a basis for uniform quality and performance of single girder cranes. It contains information which can be helpful for purchasers and users of cranes, as well as engineers and architects. Contents consist of seven sections: general specifications, crane service classifications, structural design, mechanical design, electrical equipment, crane inquiry data sheet, and glossary. The newest edition of this document includes updated details about electrical systems and wind restraints.
CMAA Spec 78 recognizes overhead traveling crane service — and the service of associated hoisting equipment — as an industry worthy of having guidelines and standards. This document provides details about providing high-quality, professional services performed by safety-minded, manufacturer-trained, and certified technicians. The intention behind CMAA Spec 78 is to set higher performance standards and raise customer expectations related to the service of overhead traveling cranes and associated hoisting equipment. Included are details about how to properly perform a load test that verifies a specific crane or hoist will safely perform its functions while supporting a load equal to its rated capacity. The publication also explains pre-operational checks and periodic inspection requirements.
This 32-page manual details why the operation of an overhead or gantry crane involves more than manipulating the system controls. Instead, only qualified, authorized personnel should be permitted to operate these systems. The operator must consider and anticipate the motions and actions that will occur as a result of operating the controls. Additionally, crane operators should receive both classroom and hands-on training on crane operation principles and methods. These include rigging, hand signals, starting and stopping, controlling loads, and more. CMAA Spec 79 also lists qualifications required to be a crane operator, as well as “shall and shall nots” for operators. The document also includes a list of recommended safety best practices.
CMAA Spec 80 should be used in conjunction with the operating instructions and maintenance manuals provided by the manufacturers of the equipment. It incorporates clear definitions of safety alert symbols and placards, such as those indicating “danger,” “warning,” “caution,” and “notice.” CMAA Spec 80 also illustrates the most commonly used below-the-hook lifting devices. These attachments interface between a specific load type and the hoist and overhead crane that will lift, transport, and position it. Depicted are structural lifters and mechanical lifters.
CMAA members represent the industry’s leading suppliers of overhead crane systems. They design, manufacture, assemble, install and service overhead cranes and components. CMAA members, with the combined experience of more than 30,000 crane installations in North America in the last decade, are committed to providing products which focus on safety and innovation. The organization offers a variety of resources—including buyers’ guides, engineering specifications, OSHA Alliance safety tip and fact sheets, inspection and maintenance checklists, safety seminars and more—via its website at www.MHI.org/CMAA.
Industrial crane remote controls offer a number of benefits for crane operators. Crane radio controls improves crane safety, and increases productivity by offering operators a better vantage point, and removing troublesome and dangerous pendant control cables.
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With overhead cranes and hoists, one of the biggest risks is that the operators are often near the load. Control Chief crane remote control systems offer the flexibility needed for an operator to get the best and safest vantage point to see the crane, the load, and any potential hazards or obstructions on the production floor.
In the same way that radio crane operators can put some distance between them and the load while it is being raised, they are also able to get closer to the load for setting and positioning. Because they have the flexibility to move around, they are not limited to a push button or pendant station, and can have hands on access where it counts.
Control Chief Industrial Crane Remote Controls can be configured for Universal control. Transmitters can be configured to operate multiple systems, so that a transmitter can switch the frequency to operate with another crane.
The versatility of universal control allows your facility to minimize the amount of spare transmitters required.
When operators are using industrial crane remote control systems, the operators are not limited to a crane cab. When they are not moving a load, they are able to work on other tasks. Operators can work on rigging or offloading when they are not actively moving the load with the crane. This increases productivity and efficiency.
Wireless controllers for cranes create a much safer environment than wired pendant controllers. Cables and wires create a tripping hazard, or can be caught up into machinery easily.
Replacing pendant controllers with Control Chief wireless technology provides a much safer solution.
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