Pulleys, also known as sheaves, are an essential item in a leaf chain system. It is a crucial moving part as an incorrectly designed pulley will have a big impact on performance and the working life of the equipment or the chain, or both. Pulleys should be designed to allow the chain free movement as the ram moves up and down. Ideally, they should be designed to last the lifetime of the machine they are being installed on (unless design criteria dictate otherwise).
Often in business it's the small details that make all the difference, details that save time and money and transform a difficult complex task into something easy.
When you need to replace a leaf chain on a vital piece of equipment, you may almost certainly need it replaced quickly and with minimum disruption to production. You don’t want to waste time trying to identify which type of leaf chain you need, it’s length and other specifications.
When you buy leaf chain you will probably find that it arrives in a box. When you receive it, you’ll have to sort it out and add other components to it before using it in the production line. You may have to cut it to length and store the rest. It can be quite a complex, time-consuming process locating all the components from different deliveries, and then assembling them ready for production.
When designing lifting or handling equipment such as forklifts and telehandlers, most design engineers would look to comply with the specific standard for the machine they are designing.
For any machine sold in Europe, that’s the Machinery Directive – Directive 2006/42/EC – a standard that is intended to ensure common levels of safety in machinery that is used throughout Europe.
The conveyor chain division of Letchworth-based FB Chain Ltd. has merged with mechanical engineering company BKC Products Ltd. of Blackburn to achieve mutual growth. They form a comprehensive and powerful team of engineering knowledge and experience to offer solutions that work.
Leaf chain anchor bolts are a crucial part of a leaf chain assembly – if they are not designed without considering all the relevant factors then they may not conform to industry standards or they may even fail. Here are the main considerations when designing an anchor bolt for use with a leaf chain.
Leaf chain is a type of chain found most commonly on telehandlers and forklift trucks. In both applications it plays a crucial role. Failure of a leaf chain component can result in catastrophic consequences – leading to a loss of production with associated financial implications or even worse, serious injuries to an operator.
Whatever the role of a leaf chain, it will inevitably wear, and this wear, if unchecked, will lead to failure. It is vital to take steps to prevent as much wear as possible and essential to monitor leaf chain wear so problems can be addressed before a major incident occurs. You should be aware that as well as measuring leaf chain wear to avoid any potential financial loss, it is also a legal requirement.
Although they may seem simple components, leaf chain assemblies play a crucial part in any machinery they are part of. The failure of an anchor bolt in equipment such as forklifts and telehandlers could mean expensive loss of production and potential injuries to personnel.
This means that any component used in a leaf chain assembly, must be produced to a high standard, with consistency and quality being paramount. They also need to be fit for purpose – elements such as leaf chain anchor bolts need to be designed to suit the task they will be used for and the machine they will be used in.
The Machinery Directive, Directive 2006/42/EC, is a European Union directive that is intended to ensure a certain level of safety in machinery and machine parts that are sold in the European Union. The directive, therefore, covers forklift trucks and other similar lifting equipment.
As leaf chain specialists we are often asked to consider how these standards and guidelines apply to leaf chains used in these types of machinery.
Some years ago, a number of forklift manufacturers started to factory-fit leaf chain with plastic guides. These guides were added to prevent wear on hydraulic cylinders or to control guide hoses which were routed through or near the mast of the forklift.
Leaf chain with plastic inserts is now available in a variety of pitch sizes and lengths and are found typically fitted to forklift trucks manufactured by Linde, Boss, Komatsu, Still, Toyota, Cesab, Hyundai and Jungheinrich.