Waste HandlingPublished 3/1 at 14:06
This year sees the launch of a new waste and recycling kit for Doosan’s DL-7 wheel loaders, as well as two brand new excavators from Hitachi. Furthermore, three Bobcat telehandlers are in use dealing with inter-municipal waste in eastern Poland.
New waste and recycling kit for Doosan wheel loaders
Doosan has launched a new waste and recycling kit for the company’s DL-7 range of wheel loaders. It is the first kit of its type for Doosan wheel loaders and is designed to help operators work safely in the hazardous conditions that often accompany waste handling and recycling applications, including contending with airborne dust, dirt and other dangerous particulates and materials. The kit is available for all Doosan wheel loader models from the DL200-7 through to the DL480-7, which is the segment of the Doosan range that is most widely used in this kind of environment. There are many new safety features provided in the kit, including the windshield guards, rim covers, road light protection and other protective covers, a fine mesh air intake cover and solid tyres. Several features will be available as options, so users can choose a kit of their choice to tailor their wheel loaders. Doosan is also preparing an aftermarket version of the kit for users who decide to install the kit at a later date. In addition, Doosan is providing a wider fin air conditioner condenser as standard to facilitate cleaning and maintenance. The kit matches with other features of the DL-7 range, such as the air compressor, high lift arm, quick coupler and so forth. According to Doosan, the new kit created much interest among visitors to the Doosan stand at this year’s bauma where it was shown for the first time, installed and displayed on a new generation DL280-7 wheel loader.
The DL-7 wheel loader range from Doosan offers a complete line of next generation machines. Like all DL-7 wheel loaders, the DL200-7 to DL480-7 models’ feature redesigned buckets with standard bucket capacities from 2m3 to 4.8m³. The ‘Z-kinematic’ lift arm on DL-7 wheel loaders delivers high breakout forces and lifting capacities, as well as a large dump angle, according to Doosan. An optional high lift arm is available. The loaders also have smooth and responsive hydraulics and auxiliary hydraulic connections. Various bias and radial tyre options are available. The loaders can be ordered with a choice of different counterweights with options including 300kg, 400kg or 500kg depending on the application. The new Doosan and Scania six cylinder engines meet Stage V emission regulations without the need for exhaust gas recirculation through the use of selective catalyst reduction, diesel oxidation catalyst and diesel particulate filter after treatment technologies.
Two new excavators from Hitachi
To meet the growing demand for 40t class machines in Europe, Hitachi presents the ZX390TC-7. Based on a Hitachi ZX350LC-7 standard excavator, with ‘Zaxis-7’ technology and Stage V compliant engine, the new tool carrier model has been specially adapted to work with larger working tools, and can be used for secondary demolition works. Larger boom and bucket cylinders, and a one class higher reinforced linkage, enable the ZX390TC-7 to carry 5t tools. It is equipped with a full hydraulic control system, suitable for use with all attachments, which can be changed from the operator’s seat. The ZX390TC-7 has a robust 25cm longer undercarriage than the standard ZX350LC-7, and is supplied with an additional 1.4t counterweight. The machine has side impact protection and a demolition spec cab with FOPS guard level 2 and high spec P5A safety glass. The model features a 270° bird’s eye view provided by the ‘Aerial Angle’ camera system. All of the main components and spare parts are supplied by Hitachi, and the modifications are approved by Hitachi’s quality assurance team.
“The launch of the ZX390TC-7 shows how Hitachi is addressing the specific requirements of such industries, delivering a specially equipped model that sits between the existing ZX350LC-7 and ZX490LCH-7 models,” says Burkhard Janssen, product manager Special Applications and New Technologies at Hitachi Construction Machinery (Europe) NV. “We are constantly listening to the needs of our customers, particularly regarding improvements to productivity and efficiency on site. This is one of three new special application machines that Hitachi has developed exclusively with Kteg, Kenki Technology Group GmbH, a joint venture between Hitachi Construction Machinery Co., Ltd and Kiesel Technologie Entwicklung GmbH.”
Hitachi also introduced the ZX400MC-7 at this year’s bauma. The multi carrier model is based on a Hitachi ZX350LC-7 standard excavator, with Zaxis-7 technology and a Stage V compliant engine. This is one of three new special application machines developed exclusively with Kteg. Built to meet the requirements of demolition projects, it is supplied with up to four front attachments, including a mono boom, two piece boom, and high reach demolition front of 21m or 24m. The ZX400MC-7 is equipped with a full hydraulic control system, suitable for use with all hydraulic attachments. Both the boom and attachment can be changed from the operator’s seat thanks to ‘Boom Quick Connect’ and ‘Tool Quick Connect’ technology. The model also features a triple boom cylinder, extendable undercarriage for 360° working, longer track frame, as well as a reinforced demolition cab. The FOPS level 2 and front window protection, plus P5A glass, protects the operator from falling debris. Furthermore, the machine features a tilting cab (to an angle of 30°), load movement indicator, additional counterweight, alarm system, bucket cylinder protection and reinforced travel drive covers.
The camera systems show multiple views from the cab, including that of the attachment, side and rear of the machine, and a 270° view of the surrounding environment. The upper structure has side protection and a reinforced underside. Main components and spare parts are supplied by Hitachi, and modifications to the standard Zaxis-7 model are approved by Hitachi’s quality assurance team. Hitachi states that it believes that there is a large demand for 40t class tool carriers in Europe, so it introduced the new model to the European market. The ZX400MC-7 has been developed to save Hitachi customers time and money, reducing the number of machines they need to send to a demolition site, and improve performance and safety for operators.
Three Bobcat telehandlers for waste recycling in Poland
ZZO Włodawa is an inter-municipal waste management organisation within an association of seven municipalities in eastern Poland near the borders with Belarus and the Ukraine. Due to the need to recycle waste from more than 24,000 inhabitants, its operation runs 24h/day, six days a week. Transfer machines play a key role in the proper functioning of the operation. Articulated loaders are often used in similar places, but in the village of Włodawa they use three Bobcat telehandlers instead, occasionally supported by a front loader tractor. “The Bobcat telehandlers are perfect for our conditions,” says Krzysztof Chilczuk, chairman of the board of ZZO Włodawa. “They are compact, easy to operate and offer a high lift height. Disposal of waste on the sorting line is organised in such a way that the loader must rotate through 90° in a small space. This is an easy job with these machines.”
The first Bobcat telehandler, a TL470 model with a maximum lift height of 7m and a load capacity of 3.5t, was delivered to the plant in Włodawa in 2013. So far, it has completed over 20,000h and is still in use. “It has never had a serious breakdown and we have never repaired the engine in it. There was once a problem with the fuel pump, but it was not the fault of the manufacturer, but rather the fuel itself,” adds Krzysztof Chilczuk. In 2018, a second Bobcat machine, a TL35.70 model, was bought with the same operating parameters as the older machine. This machine is now approaching a total of 5,000h. Having evaluated that the investment in the machines is very efficient, the management of ZOO Włodawa therefore added a third Bobcat telehandler to the fleet in August 2021. Again, a TL35.70 model was chosen, but this time with a slightly different specification.
Telehandlers with these working parameters meet our needs and working conditions well. However, the two older machines have 20in wheels. When considering the purchase of another telehandler, we wanted it to be equipped with 24in wheels. As a result, it has a greater ground clearance and is even more efficient when working in a landfill. In addition, when loading on the processing line, the operator can drive more boldly directly into the waste heap. The new machine also has more features, which include, for example, air conditioning, an air cushioned seat, cab protection and also a reversing warning system that does not beep, but provides the white noise sound we really wanted,” explained Krzysztof Chilczuk.
At ZZO Włodawa, there is no division of tasks between the Bobcat telehandlers. This is mainly due to the assignment of individual telehandlers to specific operators, which facilitates their maintenance. The sorting area operates 24h/day, so the telehandlers change with the operators. In addition to loading material onto the processing line, they are used here for pushing and stacking waste to maximise the use of available space. The waste that is filtered and sub sieved goes to containers that were initially handled by another leased carrier. However, this solution was associated with high costs, so the decision was made to introduce another method. The telehandlers are now equipped with special holders, while small wheels are attached to the containers at the rear. This allows the Bobcat machines to tow the containers and empty them: the undersized portion into three composters and an overflow amount in a dedicated yard, from where it is picked up by an external company after being picked up by the transport unit.
The Bobcat telehandlers are also used to unload composting bins, create compost piles and to turn them over for aeration. After the compost has matured, it is sieved. Loading material into the sorter as well as collecting and transporting the resulting products is also the job of the telehandlers. An important task that they perform almost daily is also the loading of the so called sliding floors of waste for disposal and bulk recyclable materials. Packaged materials are also loaded onto trucks.
At ZZO Włodawa, Bobcat telehandlers are also used to maintain the currently operated landfill and to rehabilitate a landfill that has already been closed. They are used mainly for the creation of transmission layers and the construction of technological communications. In order to make the use of Bobcat machines more efficient, in addition to the universal bucket, two high volume buckets, pallet forks and a bale grab, the ZZO Włodawa range of attachments also includes a sweeping brush. As a result, the loaders can help clean up the plant premises. Krzysztof Chilczuk praises the Bobcat telehandlers for their performance, good visibility and versatility, and also draws attention to their low fuel consumption, on average 4.7 l/h.