Where technology meets stability for forklift operations

FORKLIFT TIP-OVERS can be a hazard in warehouse operations. Factors such as high lift heights, sharp turns, uneven surfaces, and temporary or less experienced drivers may amplify the risk. Traditional training is essential for upholding best practices. However, in dynamic intralogistics materials handling environments, some operations may find benefits in additional technologies that provide real-time support to operators.

What causes forklift stability issues?

A counterbalance forklift is designed with the ‘stability triangle’ in mind. This means for the forklift to remain stable, the combined centre of gravity of the forklift and its load needs to remain within an imaginary triangle at all times. The triangle is comprised of the two front wheels, and the pivot point at the rear of the truck.

If the centre of gravity moves outside of the triangle area, the forklift may tip over. There are numerous factors that can cause this, such as the position and weight of the load and the evenness of the operating surface. 

However, some of the most significant factors relate to the operator. Excessive speed, sudden movement, sharp turns, or improper use on ramps and inclines can all increase the risk of a lift truck tip-over. This is why operator training is the most essential strategy for avoiding potential stability related incidents.

How can you improve forklift stability?

Correct and proper use of the forklift by a trained and knowledgeable operator is a robust way to help avoid forklift stability issues such as lift truck tip overs during operation. However, some forklift technologies may help in specific applications. 

For example, the innovative, maintenance-free Dynamic Stability System (DSS) from Yale Lift Truck Technologies actively promotes correct operation, by monitoring key stability parameters and intervening when necessary. DSS has been designed based on learnings from Yale customers, to help uphold operational efficiency and site safety protocols.

It is available as an option on Yale Series N electric forklifts, enabling warehouses to customise their lift trucks with a stability solution if necessary.

The Yale DSS technology is designed to support safer materials handling operations through a combination of intelligent alerts, automated performance controls and real-time monitoring. Audible and visual warnings notify operators as they approach stability limits, helping to reduce the risk of unsafe manoeuvres. The system can also automatically restrict certain truck functions, such as limiting traction speed when the mast is raised, to lower the likelihood of forward or lateral tip-overs. By continuously analysing parameters including lift height, load weight, mast tilt, travel speed and steering angle, DSS provides ongoing assistance that supports informed decision-making without compromising productivity.

How does DSS work on Yale electric forklifts?

Yale Series N electric forklifts equipped with the optional DSS system include a Vehicle System Manager (VSM) and five maintenance-free sensors. These provide the basis of four subsystems:

• A lateral stability system to help reduce truck lean during turning, supporting operation even over uneven surfaces.
• High-lift tilt control to limit tilt speed and range when carrying a load above the height threshold.
• High-lift traction control to limit the speed of the forklift when the carriage is raised above the height threshold.
• Corner control, which smoothly supports optimal lift truck speed around corners depending on the tightness of the turn.

What are the benefits of forklift stability systems?

Maintaining a strict focus on lift truck best practices can be a challenge. Lift truck operators have a vital role to play, but are also under pressure to meet productivity targets and keep loads moving throughout every shift. Lapses in best practice can lead to incidents which could cause damage or injury. Depending on the operation, smart features and technologies, such as those available as part of the Yale Series N electric forklift customisation suite, can help give assistance to operators.

For instance, the Yale DSS can provide confidence for operators, and confidence for the operation, which may be reassured by having an extra layer of protection, even when using peak-season agency drivers. For health and safety focused companies, it can also form part of their wider site safety strategies. 

The smart solution from Yale also provides versatility, as it works with electric lift trucks when used indoors and outdoors. From smooth warehouse floors to uneven outdoor areas, DSS adapts seamlessly.

Fleet managers can select from 4 different levels of support, via the dash display, to suit the needs of the operation. In addition, the DSS solution requires zero maintenance. Factory fitted with the Series N electric forklifts, there is no extra upkeep. Just intelligent and simple technology that keeps working behind the scenes. DSS empowers businesses to help protect people, loads, and operations, while upholding efficiency. 

For more information:

www.yale.com