Changing the game in log handlingWatch video
KURO RTD12 Log Stacker by SKS Toijala Works received an “Honourable Mention” in the Red Dot Award: Product Design 2016. Participants from 57 nations had registered about 5,200 products and innovations for the Red Dot Award: Product Design 2016. Only products that impress the jury with a well-thought-out detail solution receive the “Honourable Mention”.
Unveiled in summer 2015, the new KURO RTD12 is a cutting-edge, next-generation 12 ton log stacker.
“We are truly honored to have received this Red Dot Award Honourable Mention award for KURO RTD12 Log Stacker. Our development team included people with the best know-how and competence in the industry from 12 partner companies in Finland. As a result, we have developed the new generation log stacker using the latest technology on the market: The new technology made it possible to create a mechanically simple, but functionally sophisticated product that is easy to produce, easy to maintain and simple to use”, says Heikki Korpimaa, Director of TW LogStackers at SKS Toijala Works Oy.
With 41 experts from all around the world, who are chosen according to strict rules, the Red Dot Award: Product Design guarantees a very high judging competence: Only freelance designers, design professors and specialised journalists – but not designers employed at companies potentially participating – are appointed to the jury.
The independent expert panel assesses each entry strictly and fairly, live and on site, according to criteria such as degree of innovation, formal quality, functionality and ecological compatibility. Professor Dr. Peter Zec, founder and president of the Red Dot Award: “With their performances, the Red Dot winners not only demonstrated an extraordinary design quality, but they also showed that design is an integral part of innovative product solutions.”
Heikki Korpimaa, Director, SKS Toijala Works Oy
Phone: +358 40 501 8623
A unique (PATENT PENDING) asymmetric T-frame concept was born. The design is simple, strong and lightweight and based on force flow thinking. The stresses and loads coming from the boom are led straight to the ground in a box construction without splitting the forces on the left and right side frames as on conventional frame structures. The straight square box section is also the strongest known construction element against torsional stresses, and in a reach machine it’s all about torsional loads.
The new concept facilitate unique access to all key components without the need to dismantle any of the main structural components like on previous generation equipment.
We decided that the product developed with today’s most advanced technology also must look good. We used an award-winning design company to give the new KURO a shape that reflects the new technology built inside. KURO RTD12 Log Stacker by SKS Toijala Works received an “Honourable Mention” in the Red Dot Award: Product Design 2016.
KURO is a ‘sawmill machine’. Its typical duties include unloading logs from trucks, picking from sorting line pockets, transporting to storage, stacking to piles, and feeding the table. It is a real multipurpose machine suitable for all tasks!
It performs second to none, except for larger TW LogStackers. Due to its larger grapple, it can handle more wood volume in an hour than the competition. It can utilise the yard area better with its capability of stacking much higher than wheel loaders, up to 7.5 metres. KURO has superior stability due to its general concept and unique intelligent combined stack pusher support leg.
The safe working capacity of the KURO log stacker is constantly monitored and adjusted by 2-axis stability guard. It not only prevents the machine from tipping over, but also adjusts the actual capacity according to the boom status (extension & angle).
The durability of steel structures is increased by setting active limitations for travelling speeds if the boom extension or boom angle exceeds the set values.
A whole new cabin with new thinking was developed for KURO. As the operator is the most important factor for productivity, he or she needs to have everything around him or her truly optimised. The key to efficiency is ease of use.
We conducted an investigation of log stacker operations and realised that there should be the space and possibility for various variations regarding cabin equipment. This thinking resulted in the concept of variable mounting locations for practically everything in the cabin. The basis for this is what we call ‘Multi-purpose device bar’ (PATENT PENDING). The cabin is fitted with three bars, which make it possible to freely mount the main control display (12” touch screen) or even the steering wheel on any location on these bars.
We also replaced the large arm-operated joysticks with mini-sized finger-operated ones to reduce related arm injuries.
The new cabin is considerably larger than any of the previous cabins. There is more legroom, but also more space behind the operator. The operator’s comfort is also considered by adding space for modern communication equipment, for instance there are charging plugs for mobile phones and tablets and a tablet holder. The operator also has the luxury of cool drinks due to the built-in bottle holder/cooler.
We made a study of what could be the most intuitive way for the operator to communicate with the machine.
Ideally the working device, grapple, should act as an extension to the operator’s hands having the same sensitivity that his/her fingers have.
The result was a large graphical touch screen and fully programmable joysticks. We made all the controls fully adjustable – not only position, but even their mounting locations!
Every operator will have the possibility to tune the machine according to his/her own preference. The parameters can then be saved on a USB stick that is also a modern replacement to ignition key.
Another tradition was changed: The steering wheel. For years, many log stacker operators have already preferred our feature ‘button steering’ instead of a steering wheel, but now we have completely replaced the traditional hydrostatic ‘orbitrol steering’ with electric steering.
However, that was just not enough: the steering is configurable and the sensitivity is speed dependent. In addition, the steering has an extra function, ‘steering assist’, which makes the machine turn even tighter than what is possible from a steering geometry point of view. At low speeds, full lock steering applies the brake on the inner wheel making the machine turn on the spot.
TOP 3 TOPICS ARE
• Operator salary
• Corrective maintenance
With KURO we aimed to have control over all of these items.
Efficient equipment means more handling volume [m³/h] per unit. Less equipment and less operators needed.
We have taken several actions to improve fuel efficiency: Energy recovery from lowering the boom and from braking, but also through technical solutions that reduce energy loss (less heat generation).
The equipment is built for an ease of maintenance never seen before. The mechanical simplicity and software controlled main functions with a reduced number of components compared to old generation equipment will reduce the need for repairs considerably.
A valuable tool for condition monitoring, maintenance planning and many other economy-related issues is TW REMOTE.
It creates constant reporting on all key followup topics on the log stacker, keeps track of fuel consumption, efficiency of utilisation, early warnings of potential faults and service reminders.
TW REMOTE is a standard feature of KURO. The new equipment comes with a free trial period for TW REMOTE and after the trial the customer can order a monthly subscription of the service depending on the actual need for it.
Cabin is fitted with 3 bars which make it possible to freely mount the main control display or even steering wheel on any location on these bars.
Configurable electric steering. Sensitivity is speed dependent. Steering assist makes the machine to turn even tighter.