Gulf Construction Online - Putzmeister plans strong bauma show

Germany & the Middle East

Putzmeister’s pumps in action.

Putzmeister plans strong bauma show

01 March 2007

Over an exhibition space of approximately 2,700 sq m at bauma 2007, leading German construction equipment manufacturer Putzmeister will be promoting numerous innovations for conveying concrete, mortar and high-density solids, as well as for high-pressure water technology.

Its display of stationary concrete pumps will include two extremely powerful, but differently designed models – namely the BSA 2110 HP-D and the 14000 SHP-D – which represent its “top-of-the-range” class (2.1 m piston stroke).
“The BSA 2110 HP-D is presented as a particularly strong all-round pump with which enormous reserves of power can be called upon for the delivery rate (maximum 102 cu m/h) and delivery pressure (up to 220 bar). Compared to the previous model, the machine has a more powerful diesel engine so that the required torque is available even at considerably lower engine speeds, says a spokesman for the company
A particular attraction will be the 14000 SHP-D, which will make its debut at bauma. The machine is the flagship of the BSA range and, for the past few months, has been used on the most spectacular high-rise projects in the world, such as the concrete delivery for the Burj Dubai, which is designed to be the world’s tallest tower. In the BSA 14000 SHP-D, the hydraulic cylinders have a larger diameter in relation to the delivery cylinders, meaning that this high-performance pump is designed primarily for extreme pressures (significantly more than 300 bar in the concrete).
The stationary pumps in the small BSA range will sport a new design at bauma.
The company will also introduce the BSA 1003 D, a new development in the compact series (1.0 m piston stroke) which has been designed as an economical, but fully functional and versatile “entry-level” concrete pump that delivers concrete with aggregate of up to 32 mm granulation. The maximum pump output is 30 cu m/h and the theoretically possible delivery pressure is 80 bar.
“The BSA 1005 D model has a greater delivery cylinder diameter with the same stroke and achieves a pump output of 54 cu m/h and 73 bar pressure in the concrete. The tank capacity of both these models has more than doubled in comparison to previous versions,” he says.
Representing its middle range (1.4 m piston stroke) at bauma will be the BSA 1407 D and 1409 D, which achieve a pump output of 71 and 94 cu m/h respectively and a maximum delivery pressure of 106 bar.

Truck-mounted concrete pumps
Presented alongside a representative cross-section of its current range of truck-mounted concrete pumps with booms capable of reaching 20 to 62 m will be a new large-boom concrete pump.
“The new boom has a continuous delivery line with a diameter of 125 mm (two-ply pipework), which means that the dimensions of the arm assembly are extremely compact, the unfolding height is low and it is quick to set up on the construction site,” says the spokesman. “The support system for the new large-boom truck-mounted concrete pump can be flexibly positioned according to the space available and has all the benefits of the familiar bases that distinguish the Putzmeister truck-mounted concrete pump in the 50 and 60-m class.”
As well as numerous improvements in the areas of placing booms and pumps, Putzmeister will present interesting solutions at bauma that will facilitate the everyday use of the machines for the operator. Through structural changes in the steelwork, additional accessories and the use of electronic controllers, these machines now offer improved flexibility, increased user-friendliness and additional safety.
As well as the one-side-support (OSS), Putzmeister will show other solutions for setting up and operating truck-mounted concrete pumps safely where space is limited. This includes an enhanced version, which also allows OSS in the 30 and 40-m class with a slewing range of up to approximately 180 degrees. A more flexible variant of the space-saving OSS is the additional EFS equipment (Ergonic flexible support). It allows a safe 360-degree working range of the concrete placing boom with a considerably reduced set-up space requirement adapted to the space available on the construction site by configuring different support leg positions.
Putzmeister is also able to assist its customers with highly specialised truck-mounted concrete pump applications. For example, a solution will be on show for concrete placement in deep boreholes (pilings) and in high wall formwork with narrow reinforcement. This enables concrete to be delivered up to 20 m below the boom tip without risk of segregation.

User-friendliness
Also on show will be an enhanced proportional radio remote control, which allows the concrete pump operator to read off lots of additional information about important machine parameters from the clear central display. This includes, for example, the current delivery pressure, delivery rate, engine speed, fluid temperature as well as the battery charge status and the reception strength of the radio remote control. After bauma, all PM truck-mounted concrete pumps (with a few exceptions) will be equipped with this high-quality radio remote control as standard.
The basic equipment of most truck-mounted concrete pump models will also include EPS control (Ergonic pump system) with EGD (Ergonic graphic display) on the control cabinet after bauma. The electronic EPS control system prevents pressure peaks in the hydraulic system, which otherwise occur when the transfer tubes are switched over. Furthermore, the EPS control system can also be used to restrict the maximum desired delivery pressure and required delivery rate. Once concreting is complete, one of the most pressing jobs for a concrete pump operator is to clean his pump and the connected delivery line to remove the remaining concrete. A pipeline on a truck-mounted concrete pump with a 36-m boom will contain about 0.5 cu m of concrete, for instance. This is in addition to the concrete volume in the hopper and deliver cylinders. To keep the remaining volume of concrete as low as possible, Putzmeister will present new solutions under the theme “cleaning onwards”, he says.

More safety
In the event of a machine failure, for example, through engine damage in the carrier vehicle), where the concrete pump no longer has functional drive hydraulics to fold in the boom, retract the support legs and remove the concrete from the pipeline and delivery cylinders, cleaning must take place quickly in order to prevent concrete blockages in the system. For such emergencies, Putzmeister offers the Dynajet 350 Plus high-pressure cleaner as an external hydraulic power pack. It is otherwise used by concrete pump operators for cleaning vehicles and is part of the range offered by the Putzmeister water technology division, along with other models. All PM truck-mounted concrete pumps will be fitted with a hydraulic port for emergency supply after bauma.
Another innovation is the “follow me” control option, which has already been tested.
“‘Follow me’ makes it possible to guide the boom tip with hand pressure on the end hose and is beneficial for concrete placement in formwork that is not easily visible to the operator, for example, or if the pump operator’s concentration for guiding the boom is occupied elsewhere, as in maintaining a distance from surrounding buildings or power cables. The possibilities for controlling the boom are now theoretically doubled, that is, control by the pump operator and the hoseman. However the pump operator’s radio remote control has priority and the pump operator still remains responsible for the safe operation of the concrete pump during the “follow me” control,” he says.

Fleet management
Following the success of the PM Daisy data information system for the management and prompt invoicing of concrete pump orders via GSM data communication (Global System for Mobile Communication) and via GPRS (General Packet Radio Service), Putzmeister will now present i-Daisy, a new Internet and GPRS-supported system for simplified management of the machine fleet.
“The advantages of i-Daisy include the fully automatic exchange of data between the head office and truck (without the intervention of the operator) and the low cost of GPRS data transmission,” explains the spokesman. “Due to its crucial function for modern fleet management, concrete pump service providers expect an efficient data information system to have a particularly high level of availability. Access via the Internet means that i-Daisy is now available worldwide – with the appropriate technical and personnel requirements on site. The new i-Daisy is therefore available in several languages.”

PUMI
Putzmeister continues to update its PUMI range of truck mixer concrete pumps which are popular and have boom reaches of 21, 24 and 26 m. For some export markets, Putzmeister has also developed models with 28 and 31-m booms with four subdivisions.
“There are two differently-designed piston pumps and a rotor delivery system to choose from as the pumping unit for the PM PUMIs. The compact CS piston pump (700 mm piston stroke, 230 mm diameter delivery cylinder) is fitted at the rear of the vehicle at right angles to the direction of travel and can achieve up to 57 bar pressure and 56 cu m/h pump output,” the spokesman continues. “It is particularly maintenance friendly. The piston pump with S transfer tube, preferred by PUMI customers in many countries, is fitted in a longitudinal direction under the mixing drum. It has a piston stroke of 1,000 mm and a delivery cylinder diameter of 230 mm and is available in two power classes (50 bar with 80 cu m/h or 75 bar with 67 cu m/h).”
With the rotor PUMI, Putzmeister places emphasis on a sufficient output (max./theor. 58 cu m/h.), with high pumping pressures being less of a priority (maximum 25 bar, due to the pump system).
“The rotor PUMI strengths like in the fact it runs particularly quietly during pumping operations, precise metering of even small pumping volumes is possible and there is hardly any concrete residue that has to be removed. Cleaning is also very easy. A further plus point is the more favourable weight of the delivery system, so that a greater concrete load is possible in comparison to the piston pump versions,” he says.