WO2023156581A1 - Auxiliary unit and system for electrically driving a truck-mounted concrete pump, and truck-mounted concrete pump - Google Patents

Auxiliary unit and system for electrically driving a truck-mounted concrete pump, and truck-mounted concrete pump Download PDF

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Publication number
WO2023156581A1
WO2023156581A1 PCT/EP2023/054007 EP2023054007W WO2023156581A1 WO 2023156581 A1 WO2023156581 A1 WO 2023156581A1 EP 2023054007 W EP2023054007 W EP 2023054007W WO 2023156581 A1 WO2023156581 A1 WO 2023156581A1
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WO
WIPO (PCT)
Prior art keywords
hydraulic
truck
pump
concrete pump
mounted concrete
Prior art date
Application number
PCT/EP2023/054007
Other languages
German (de)
French (fr)
Inventor
Andreas Lehmann
Marcus Fink
Original Assignee
Schwing Gmbh
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Schwing Gmbh filed Critical Schwing Gmbh
Publication of WO2023156581A1 publication Critical patent/WO2023156581A1/en

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Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04B—POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
    • F04B15/00—Pumps adapted to handle specific fluids, e.g. by selection of specific materials for pumps or pump parts
    • F04B15/02—Pumps adapted to handle specific fluids, e.g. by selection of specific materials for pumps or pump parts the fluids being viscous or non-homogeneous
    • E—FIXED CONSTRUCTIONS
    • E04—BUILDING
    • E04G—SCAFFOLDING; FORMS; SHUTTERING; BUILDING IMPLEMENTS OR AIDS, OR THEIR USE; HANDLING BUILDING MATERIALS ON THE SITE; REPAIRING, BREAKING-UP OR OTHER WORK ON EXISTING BUILDINGS
    • E04G21/00—Preparing, conveying, or working-up building materials or building elements in situ; Other devices or measures for constructional work
    • E04G21/02—Conveying or working-up concrete or similar masses able to be heaped or cast
    • E04G21/04—Devices for both conveying and distributing
    • E04G21/0418—Devices for both conveying and distributing with distribution hose
    • E04G21/0436—Devices for both conveying and distributing with distribution hose on a mobile support, e.g. truck
    • E—FIXED CONSTRUCTIONS
    • E04—BUILDING
    • E04G—SCAFFOLDING; FORMS; SHUTTERING; BUILDING IMPLEMENTS OR AIDS, OR THEIR USE; HANDLING BUILDING MATERIALS ON THE SITE; REPAIRING, BREAKING-UP OR OTHER WORK ON EXISTING BUILDINGS
    • E04G21/00—Preparing, conveying, or working-up building materials or building elements in situ; Other devices or measures for constructional work
    • E04G21/02—Conveying or working-up concrete or similar masses able to be heaped or cast
    • E04G21/04—Devices for both conveying and distributing
    • E04G21/0418—Devices for both conveying and distributing with distribution hose
    • E04G21/0445—Devices for both conveying and distributing with distribution hose with booms
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04B—POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
    • F04B17/00—Pumps characterised by combination with, or adaptation to, specific driving engines or motors
    • F04B17/03—Pumps characterised by combination with, or adaptation to, specific driving engines or motors driven by electric motors
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04B—POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
    • F04B17/00—Pumps characterised by combination with, or adaptation to, specific driving engines or motors
    • F04B17/05—Pumps characterised by combination with, or adaptation to, specific driving engines or motors driven by internal-combustion engines

Definitions

  • the invention relates to an additional unit for the electric drive of an auto bed pump.
  • the invention also relates to a truck-mounted concrete pump that can be driven electrically by such an additional unit, and to a system made up of a truck-mounted concrete pump and an additional unit that drives the truck-mounted concrete pump electrically.
  • the patent application DE 10 2018 214 965 A1 discloses a truck-mounted concrete pump with a hydraulic drive pump system for driving the concrete pump system of the truck-mounted concrete pump, the hydraulic drive pump system being optionally driven by an internal combustion engine or an electric motor.
  • the truck-mounted concrete pump is equipped with an additional electric motor.
  • the hydraulic drive pump system of the truck-mounted concrete pump is designed to be driven by an internal combustion engine with an output of over 200 kilowatt hours, while the electric motor can often only drive the hydraulic drive pump system with an output of less than 100 kilowatt hours due to the limited electrical power available.
  • the invention proposes an additional unit that is suitable for electrically driving a truck-mounted concrete pump, the truck-mounted concrete pump having a hydraulically driven concrete pump system for pumping concrete and a hydraulic drive pump system and an internal combustion engine, the combustion engine of the truck-mounted concrete pump for driving the hydraulic drive pump system and the hydraulic drive pump system for driving the Concrete pumping system is designed.
  • the invention is particularly characterized in that the additional unit has a hydraulic pump and an electric motor for driving the hydraulic pump, the hydraulic pump of the additional unit for driving the hydraulic drive pump system of the truck-mounted concrete pump being designed to be reversibly connectable to the truck-mounted concrete pump.
  • the additional unit has a hydraulic pump and an electric motor for driving the hydraulic pump and the hydraulic pump for driving the hydraulic drive pump system of the truck-mounted concrete pump with the Truck-mounted concrete pump can be reversibly connected, a truck-mounted concrete pump of conventional design can very easily be driven electrically on a construction site. Only a few changes are necessary on the truck-mounted concrete pump to enable electrical operation.
  • the truck-mounted concrete pump can simply be connected to the additional unit with hydraulic oil lines, for example, in order to electrically drive the concrete pump system of the truck-mounted concrete pump.
  • suitable quick couplings can be used for this reversible connection, which can be connected and disconnected as required with little effort and in a short time.
  • the truck-mounted concrete pump that can be driven by the additional unit has a hydraulic motor for the additional drive of the hydraulic drive pump system of the truck-mounted concrete pump, the hydraulic pump of the additional unit being connectable to the hydraulic motor of the truck-mounted concrete pump for driving the hydraulic drive pump system of the truck-mounted concrete pump.
  • the hydraulic motor on the truck-mounted concrete pump makes it very easy to use the additional unit to drive the hydraulic pump drive electrically.
  • the additional unit advantageously has a hydraulic oil tank for receiving the hydraulic oil returned from the hydraulic motor of the truck-mounted concrete pump.
  • the hydraulic pump of the additional unit is designed to draw in hydraulic oil from the hydraulic oil tank of the additional unit. Because the hydraulic pump of the additional unit can suck in the hydraulic oil required for operation directly from the hydraulic oil tank of the additional unit, there is no need for a long suction line from the hydraulic motor of the additional unit to the hydraulic oil tank of the truck-mounted concrete pump, which would have to have a relatively large cross-section and therefore only with great effort could be connected to the truck-mounted concrete pump.
  • the invention is further characterized by a truck-mounted concrete pump, which has a hydraulically driven concrete pump system for pumping concrete and a hydraulic drive pump system and an internal combustion engine, the internal combustion engine being designed to drive the hydraulic drive pump system and the hydraulic drive pump system being designed to drive the concrete pump system, the truck-mounted concrete pump having a hydraulic motor, which is designed to additionally drive the hydraulic drive pump system.
  • a truck-mounted concrete pump which has a hydraulically driven concrete pump system for pumping concrete and a hydraulic drive pump system and an internal combustion engine, the internal combustion engine being designed to drive the hydraulic drive pump system and the hydraulic drive pump system being designed to drive the concrete pump system, the truck-mounted concrete pump having a hydraulic motor, which is designed to additionally drive the hydraulic drive pump system.
  • the hydraulic motor of the truck-mounted concrete pump is designed to be reversibly connectable to a hydraulic pump, driven by an electric motor, of an additional unit for driving the concrete pump system. Because the hydraulic motor of the truck-mounted concrete pump is designed with a hydraulic pump driven by an electric motor to drive the concrete pump system, the concrete pump system can be driven electrically very easily and the combustion engine of the truck-mounted concrete pump no longer has to be in operation when working on the construction site.
  • the hydraulic drive pump system of the truck-mounted concrete pump has a plurality of hydraulic pumps that are mechanically coupled to one another, with the hydraulic motor being designed to drive the hydraulic pumps that are coupled to one another.
  • the hydraulic motor is sufficient to drive all hydraulic pumps of the hydraulic drive pump system of the truck-mounted concrete pump.
  • the hydraulic motor of the truck-mounted concrete pump is advantageously arranged between the internal combustion engine and the hydraulic pumps of the hydraulic drive pump system which are coupled to one another.
  • This arrangement has the advantage that, in principle, only the drive shaft from the internal combustion engine to the hydraulic drive pump system has to be interrupted in order to to couple the hydraulic motor there.
  • the hydraulic motor could be located directly on the drive shaft from the internal combustion engine to the hydraulic drive pump system.
  • a coupling is arranged between the internal combustion engine of the truck-mounted concrete pump and the hydraulic motor, which coupling is designed for coupling and decoupling the hydraulic motor from the internal combustion engine.
  • the hydraulic motor can be decoupled from the internal combustion engine during electrical operation by the additional unit and drive the hydraulic pump system alone without the drive shaft leading to the internal combustion engine rotating.
  • the hydraulic drive pumping system of the truck-mounted concrete pump comprises a plurality of hydraulic pumps arranged in series and mechanically coupled to one another, and the hydraulic motor is arranged between two of these hydraulic pumps.
  • the hydraulic motor can be integrated into the hydraulic drive pump system, with the hydraulic pump train, which is formed by the hydraulic pumps of the hydraulic drive pump system, being only slightly lengthened for the drive by the hydraulic motor.
  • the hydraulic motor is advantageously arranged between two hydraulic pumps via a deflection gear. Because a deflection gear is generally somewhat narrower than a hydraulic motor, this measure can result in the extension of the hydraulic pump line being somewhat shorter than if the hydraulic motor were arranged directly between the hydraulic pumps.
  • a transfer gearbox for coupling the hydraulic motor to the hydraulic drive pump system is advantageously arranged between the hydraulic motor and the hydraulic drive pump system.
  • a transfer case makes it very easy to couple the hydraulic motor to the hydraulic drive pump system.
  • the transfer case can also be used to couple and decouple the internal combustion engine to the hydraulic drive pump system.
  • the hydraulic motor and the internal combustion engine can drive the hydraulic drive pump system together or individually.
  • the hydraulic drive pump system has a plurality of hydraulic pumps that are mechanically coupled to one another, with one of the hydraulic pumps also being designed as a hydraulic motor and driving the rest of the hydraulic drive pump system by the auxiliary unit. Because one of the hydraulic pumps also assumes the function of a hydraulic motor, no additional installation space is required on the truck-mounted concrete pump for the electric drive of the truck-mounted concrete pump by the additional unit.
  • the invention relates to the use of an additional unit which, as described above, has a hydraulic pump driven by an electric motor, for hydraulically driving a hydraulic motor of a truck-mounted concrete pump that is separate from the additional unit.
  • the truck-mounted concrete pump can be designed as described above and in more detail below.
  • the auxiliary unit is separate from the truck-mounted concrete pump, which means that they are two different, separate units, in particular, the auxiliary unit is not an integrated component of the truck-mounted concrete pump.
  • the additional unit is not installed in or on the truck-mounted concrete pump.
  • the additional unit and the truck-mounted concrete pump can be moved completely independently of each other when they are disconnected.
  • the hydraulic pump of the additional unit is reversibly connected to the truck-mounted concrete pump via (e.g. flexible) hydraulic oil lines and - preferably - via suitable hydraulic quick-release couplings for the hydraulic drive of a hydraulic motor of the truck-mounted concrete pump if required (e.g. depending on the presence of a sufficient electrical power supply on a construction site).
  • FIG. 2 shows a detailed representation of a first embodiment of the system according to the invention
  • FIG. 3 shows the principle of a second embodiment of the system according to the invention
  • FIG. 4 Principle representation of a third embodiment of the system according to the invention.
  • FIG. 5 shows the principle of a fourth embodiment of the system according to the invention.
  • FIG. 6a, b Principle representation of a fifth embodiment of the system according to the invention.
  • FIG. 1 Schematic representation of a sixth embodiment of the system according to the invention.
  • FIG. 1 shows a truck-mounted concrete pump 100, an additional unit 200 and a system for electrically driving a truck-mounted concrete pump 100 with an additional unit 200 according to the invention.
  • the truck-mounted concrete pump 100 has a hydraulically driven concrete pump system 110 for pumping concrete and a hydraulic drive pump system 102 and an internal combustion engine 103 (Fig.2), the internal combustion engine 103 for driving the hydraulic drive pump system 102 and the Hydraulic drive pump system 102 is designed to drive the concrete pump system 110 .
  • the truck-mounted concrete pump 100 shown here as an example has a concrete pump system 110 which is built on a truck chassis 130 with a driver's cab.
  • the concrete pump system 110 includes various hydraulic consumers or working devices 111, 112, 113, 114, 115, for example an agitator 111 for mixing the fresh concrete in the hopper 116, a two-cylinder piston pump 114 with delivery cylinders that are driven by differential hydraulic cylinders and a concrete switching valve 112.
  • a Two-cylinder piston pump 114 could also use another pumping technique, for example a peristaltic rotor pump.
  • Other hydraulic consumers of the concrete pump system 110 are, for example, a support 113 and a concrete placing boom 115.
  • the truck-mounted concrete pump 100 could also be equipped with a hydraulically driven mixing drum (truck mixer concrete pump) or, for example, be designed as a simple concrete pump mounted on a truck chassis without a boom and support.
  • the internal combustion engine 103 (FIG. 2) of the truck chassis 130 drives the drive wheels 131 of the truck during ferry operation.
  • the internal combustion engine 103 continues to run and drives the concrete pump system 110 via the power take-off 104 or the cardan shaft 106 .
  • the power take-off 104 is, for example, a power take-off directly coupled to the crankshaft of the internal combustion engine (NMV power take-off engine-dependent pre-assembled) or any other form of power take-off, for example a transmission-dependent power take-off.
  • the hydraulic drive pump system 102 of the truck-mounted concrete pump 100 has a plurality of hydraulic pumps 102a1, 102a2, 102b, 102c, 102d (Fig. 2), which the hydraulic consumers 111, 112, 113, 114, 115 of the concrete pump system 110 driven via hydraulic supply lines.
  • the hydraulic pumps 102a1, 102a2, 102b, 102c, 102d (Fig. 2) suck the Hydraulic oil for driving the concrete pump system 110 from a hydraulic oil tank 108 (FIG. 2) of the truck-mounted concrete pump 100.
  • the additional unit 200 of the system according to the invention has a hydraulic pump 202 for hydraulically driving the hydraulic drive pump system 102 of the truck-mounted concrete pump 100 and an electric motor 203 for driving the hydraulic pump 202 .
  • the electric motor 203 is connected via a power distribution unit 205, a power line 222 and a power connection 207 to a mains connection, for example a construction site power distributor 400. If the power output from a single mains connection is not sufficient under certain circumstances to operate the electric motor 203 of the additional unit 200 with sufficient electrical power, several mains connections of a construction site power distributor 400 or several construction site power distributors 400 could be used, so that the electrical power of the mains connections add up to supply the electric motor 203 with a sufficiently high electric power.
  • the additional unit 200 can, for example, also have an optional accumulator 206, which can drive the electric motor 203 alone for a certain period of time, depending on the capacity of the accumulator 206, or provides additional electricity to supplement the construction site electricity in order to absorb power peaks of the concrete pump system 110.
  • the accumulator 206 can, for example, be charged by the construction site power distributor 400 via the electrical power distribution unit 205 during pump pauses or phases of low power requirement of the concrete pump system 110 .
  • the capacity of the accumulator 206 could also be so large, for example, that the construction site power connection 400 can be completely dispensed with.
  • a fuel cell could be used as an alternative or in addition to the accumulator 206 .
  • the accumulator 206 is, for example, a high-voltage accumulator (HV).
  • HV high-voltage accumulator
  • the accumulator 206 can also be arranged outside of the additional unit 200, for example.
  • the construction site power distributor 400 could also be supplemented with a fuel cell or an electrical accumulator, for example to supply the entire construction site.
  • the additional unit 200 could have a supercapacitor (not shown) for bridging short-term power peaks.
  • the auxiliary unit 200 could be mounted on a pickup truck or a trailer, for example, or arranged in a container, for example, and is parked close to the truck-mounted concrete pump 100, for example between the support legs of the support 113, for operation.
  • FIG. 2 shows a more detailed hydraulic diagram of an embodiment of the system according to the invention. All elements that have to be additionally provided or retrofitted in a conventional truck-mounted concrete pump, i.e. one driven by the internal combustion engine 103, for the electric drive by the auxiliary unit 200 are provided with the reference symbols 3XX here, provided they are not already on the truck-mounted concrete pump for other reasons 100 are available.
  • the hydraulic drive pump system 102 of the truck-mounted concrete pump 100 shown in Figure 2 which is driven by the internal combustion engine 103, has, for example, two hydraulic pumps 102a1 and 102a2, which in the internal combustion engine mode drive the two-cylinder piston pump 114 of the concrete pump system 110 via a common hydraulic supply line. Due to the high output of the internal combustion engine 103, the truck-mounted concrete pump 100 in this example has two hydraulic pumps 102a1 and 102a2 arranged one behind the other, i.e. mechanically arranged in series, in order to achieve the highest possible pump output and thus the output of the internal combustion engine 103 for driving the two-cylinder piston pump 114 full use.
  • the hydraulic pumps 102b, 102c and 102d which are also arranged one behind the other and are mechanically coupled in series, drive the concrete switching valve 112, the support 113, the concrete placing boom 115 and the agitator 111, with the hydraulic pump 102b, which is designed as a constant flow pump, i.e. cannot be controlled, driving the concrete switching valve 112 drives via an intermediate hydraulic accumulator, not shown.
  • the Hydraulic pump 102d also designed as a constant flow pump, drives the agitator 111 in the infeed funnel 116 of the truck-mounted concrete pump 100.
  • the hydraulic pumps 102a-d of the hydraulic drive pump system 102 which are thus coupled to form a so-called hydraulic pump train, suck hydraulic oil from the hydraulic oil tank 108 of the truck-mounted concrete pump 100 during operation.
  • the hydraulic oil flows from the hydraulic consumers 111, 112, 113, 114, 115 via hydraulic oil return lines 122a-d back into the hydraulic oil tank 108 of the truck-mounted concrete pump 100.
  • the truck-mounted concrete pump 100 could have additional hydraulic pumps. If the truck-mounted concrete pump 100 has no concrete placing boom 115 and no support 113, for example, the corresponding hydraulic pump 102c can be omitted. In the case of a truck mixer concrete pump, for example, an additional hydraulic pump could be provided to drive a mixing drum.
  • the assignment of the hydraulic pumps 102a-d is variable, which means in particular that, for example, the constant-flow pumps 102c and 102d drive additional hydraulic consumers or can be combined to form a hydraulic pump, for example.
  • the hydraulic pump 202 of the auxiliary unit 200 driven by the electric motor 203 drives the hydraulic motor 300 on the truck-mounted concrete pump 100 via hydraulic oil line 209a, the hydraulic quick coupling 304a and the hydraulic oil line 305a, which is mechanically coupled to the hydraulic drive pump system 102, for example via a drive shaft 306.
  • the hydraulic motor 300 can, for example, also be coupled directly to the hydraulic pump 102a1 via a through drive.
  • the hydraulic motor 300 is coupled to the power take-off 104 of the internal combustion engine 103 via an optional detachable clutch 301, for example.
  • the clutch 301 allows the input side of the hydraulic motor 300 to be mechanically coupled by the power take-off 104 while it is being driven by the hydraulic pump 202 be decoupled.
  • the engine 103 drives the hydraulic drive pump system 102 when the hydraulic motor 300 is not being driven by the auxiliary unit 200 .
  • the hydraulic motor 300 is idled.
  • the internal combustion engine 103 and the hydraulic motor 300 could also drive the hydraulic drive pump system 102 together, for example when the clutch 301 is closed.
  • the drive could then be designed in such a way that, for example, the hydraulic motor 300 provides sufficient drive energy for a base load, for example for driving the placing boom 115 and the agitator 111, and the combustion engine 103 provides additional drive energy for the operation of the two-cylinder piston pump 114 and the concrete switching valve 112 provides.
  • the additional drive of the internal combustion engine 103 can, for example, only be used to intercept temporary power peaks of the concrete pump system 110 .
  • the hydraulic motor 300 is reversibly connected to the hydraulic oil tank 208 of the additional unit 200 via the hydraulic oil return lines 305b and 209b, which are connected to one another by a hydraulic quick coupling 304b.
  • the hydraulic pump 202 of the additional unit 200 draws in the hydraulic oil required for the drive, as shown in FIG. 2, for example directly from the hydraulic oil tank 208 of the additional unit via a hydraulic line.
  • the hydraulic oil return lines 305b and 209b can, for example, also lead directly to the hydraulic pump 202 of the additional unit 200, so that only a small or no hydraulic oil tank 208 has to be present on the additional unit 200.
  • a return line 310 can lead from the hydraulic oil tank 108 to the hydraulic oil tank 208 of the additional unit 200, for example, in order to return the leakage oil to the working circuit attributed.
  • the leakage oil can, for example, flow by gravity from the hydraulic oil tank 108 of the truck-mounted concrete pump 100, which is usually located somewhat higher, to the hydraulic oil tank 208 of the additional unit, or an additional hydraulic pump, not shown, on the truck-mounted concrete pump 100 conveys the leakage oil via the hydraulic line 310 to the hydraulic oil tank 208 of the additional unit 200.
  • a of the hydraulic pumps 102a-d of the hydraulic drive pump system 102 could also be designed to reclaim the leakage oil.
  • the leakage oil of the hydraulic motor 300 can also be routed directly to the hydraulic oil tank 208 of the auxiliary unit 200, without having to go via the hydraulic oil tank 108 of the truck-mounted concrete pump 100.
  • all the connections on the truck-mounted concrete pump 100 for connection to the auxiliary unit 200 are arranged on the right-hand side of the truck-mounted concrete pump 100. These connections can also be arranged, for example, on the left or on both sides of the truck-mounted concrete pump 100 in order to be able to park and connect the additional unit 200 on both sides of the truck-mounted concrete pump 100 as desired. An arrangement of the connections at other positions of the truck-mounted concrete pump 100 is also conceivable.
  • the concrete pump system 110 of the truck-mounted concrete pump 100 requires compressed air, for example to shut off the concrete delivery line.
  • this compressed air is generated with a compressor driven by the internal combustion engine 103, also for supplying the brake system of the chassis 130, among other things.
  • a compressor driven by an electric motor or an additional hydraulic pump can also be arranged on the truck-mounted concrete pump 100.
  • a compressor could also be arranged on the auxiliary unit 200 and additionally driven by the electric motor 203 or a separate electric motor.
  • the control unit 220 of the additional unit 200 is connected to the control unit 120 of the truck-mounted concrete pump 100 via the connector plug 312 .
  • the additional unit 200 has, for example, a power supply battery 225 for low voltage, for example using 24 or 48 volt technology, for the control and regulation tasks.
  • the power supply battery 225 can be supplied with electrical energy by the power distribution unit 205, for example.
  • the power supply battery 225 serves in particular to supply the electrical power to the control unit 220 of the auxiliary unit 200 and to supply the electrical power to the control unit 120 of the truck-mounted concrete pump 100 via the supply voltage connection 310.
  • the control unit 120 of the truck-mounted concrete pump 100 is powered by the Voltage supply battery 225 is supplied with electrical voltage, it is ensured that the voltage supply battery 125 of the truck-mounted concrete pump 100 is not overloaded or discharged because when the internal combustion engine 103 is switched off, the voltage supply battery 125 of the truck-mounted concrete pump 100 is no longer recharged.
  • the power supply battery 225 of the additional unit 200 also prevents the control unit 220 of the additional unit 200 from being de-energized when the construction site power supply 400 is interrupted and the high-voltage battery 206 is empty or non-existent.
  • the control unit 220 can be connected, for example, to a current/power sensor 218 that detects the electrical power drawn from the power connection 207 on the power line 227 .
  • a current/power sensor 218 that detects the electrical power drawn from the power connection 207 on the power line 227 .
  • the construction site power connection 400 can be protected from overloading and, for example, the electrical power drawn from the construction site power connection 400 can be measured, for example in order to bill the costs for the electrical power drawn based thereon.
  • the control unit 220 can, for example, also have additional control lines, for example a CAN bus system, with the high-voltage accumulator 206, the power supply battery 225 and the power distribution unit 205 for a wide variety of control and regulation tasks.
  • additional control lines for example a CAN bus system
  • the electric motor 203 of the additional unit 200 can be designed as a direct current or alternating current motor.
  • the electric motor 203 can also be designed as a synchronous or asynchronous motor and, for example, be liquid- or air-cooled.
  • the operator of the truck-mounted concrete pump 100 can control and operate the concrete pump system 110 during electrical operation with the additional unit 200 as usual via the control unit 120, for example also with a remote control. If, for example, the concrete placing boom 115 is moved by means of the remote control, the hydraulic pump 202 of the additional unit 200 could automatically retrieve a higher power and this could also be made available. Accordingly, for example, an increase in the delivery rate of the two-cylinder piston pump 114 requested by the operator via the remote control means that the delivery volume of the hydraulic pump 202 is automatically increased.
  • the two-cylinder piston pump 114 shown in this exemplary embodiment works with an open hydraulic circuit, which can be seen in particular from the fact that the hydraulic pumps 102a1, 102a2 only deliver the hydraulic oil in one direction.
  • a two-cylinder piston pump 114 can, for example, also be operated in a closed hydraulic circuit with a reversible pump, which delivers alternately in both directions, and a feed pump.
  • the additional unit 200 can also be designed to drive the hydraulic drive pump system 102 of the truck-mounted concrete pump 100 in parallel with the internal combustion engine drive of the truck-mounted concrete pump 100 .
  • the internal combustion engine 103 can be put into operation in addition to the auxiliary unit 200 .
  • FIG. 2 shows the technical structure of the system according to the invention for electrically driving a truck-mounted concrete pump 100 for a first exemplary embodiment in a detailed form.
  • FIGS. 3 to 7 further alternative exemplary embodiments of the system according to the invention for electrically driving a truck-mounted concrete pump 100 are shown in simplified form for reasons of clarity and are described below.
  • the elements shown in more detail in FIG. 2 can be transferred analogously to the exemplary embodiments according to FIGS.
  • the alternative embodiments of FIGS. 3 to 7 relate in particular to different arrangements of the hydraulic motor 300 which drives the hydraulic drive pumping system 102 of the truck-mounted concrete pump 100.
  • FIG. 1 shows the technical structure of the system according to the invention for electrically driving a truck-mounted concrete pump 100 for a first exemplary embodiment in a detailed form.
  • FIGS. 3 to 7 further alternative exemplary embodiments of the system according to the invention for electrically driving a truck-mounted concrete pump 100 are shown in simplified form for reasons of clarity and are described below.
  • Figure 3 shows an example of the arrangement of the hydraulic motor 300 between the hydraulic pumps 102a1 and 102a2, which drive the two-cylinder piston pump 114 and the hydraulic pumps 102b, 102c and 102d, which drive the placing boom 115, the support 113, the concrete switching valve 112 and the agitator 111.
  • the hydraulic motor 300 could easily be located elsewhere between the hydraulic pumps 102a-102f of the hydraulic drive pumping system 102.
  • the hydraulic drive pump system 102 is driven via the power take-off 104, for example.
  • FIG. 4 shows an example of a variant of the system according to the invention, in which the hydraulic motor 300 on the truck-mounted concrete pump 100 is coupled between the hydraulic pumps 102c and 102b via a deflection gear 302.
  • the advantage of this variant is, for example, that the width of the deflection gear 302 is less than the width of the hydraulic motor 300, so that the lengthening of the hydraulic drive pump system 102, as shown in FIG. 3, turns out to be somewhat smaller overall.
  • This also eliminates the changes to the truck-mounted concrete pump 100, in which the available installation space for the hydraulic drive pump system 102 may be limited, less.
  • the deflection gear 302 can also be arranged, for example, between two other hydraulic pumps 102a-102d or between the power take-off 104 and the hydraulic pump 102a or at the end of the hydraulic drive pump system 102 on the output side of the hydraulic pump 102d.
  • a variant is shown in FIG. 5 by way of example, in which the hydraulic motor 300 is connected to the hydraulic drive pump system 102 via a transfer gearbox 303 .
  • the transfer case 303 is constructed in such a way that the hydraulic motor 300 is arranged below the hydraulic pump 102a and is coupled to the transfer case 303 via the first transmission input 303b.
  • the power take-off 104 is coupled to the transfer gearbox 303 via a second transmission input 303c and the transmission output 303a is coupled to the hydraulic pump 102a of the hydraulic drive pump system 102 .
  • the difference between the deflection gear 302 according to Figure 2 and the transfer case 303 is, in particular, that the transfer case 303 can also have one or more detachable clutches for coupling and decoupling the transmission inputs 303b and 303c, so that, for example, the Figure 2 shown separate clutch 301 can be omitted. Furthermore, the transfer case 303 can have gear shift stages, so that only one of the transmission inputs 303b or 303c is coupled to the transmission output 303a.
  • the transfer case 303 can, for example, allow the hydraulic drive pump system 102 to be driven solely by the internal combustion engine 103 or the hydraulic motor 300 or also to be driven jointly by both motors 103 and 300 .
  • the transfer case 303 could, for example, also be constructed in such a way that the hydraulic motor 300 is arranged at the transmission input 303c and the power take-off 104 is coupled to the transfer case 303 via a further transmission input, which is arranged below the transmission input 303c in FIG.
  • the advantage of such an arrangement would be, for example, that the hydraulic motor 300 is coupled directly to the hydraulic drive pump system 102 via a shaft through the transfer gearbox 303, so that there are hardly any losses in the electrical drive of the hydraulic drive pumping system 102 through the transfer case 303 occur.
  • the transfer case 303 shown in FIG. 5 can be arranged at a large number of other positions in and on the hydraulic drive pump system 102 and have correspondingly adapted transmission inputs and outputs.
  • FIGS. 6a and 6b show a further embodiment in which one of the hydraulic pumps 102a to 102d forms a unit with the hydraulic motor 300.
  • the hydraulic pumps 102a1 and 102a2 are adapted to be integrated with the hydraulic motor 300.
  • the two hydraulic pumps 102a and 102b jointly drive the two-cylinder piston pump 114, particularly if the truck-mounted concrete pump 100 is conventionally driven by the internal combustion engine 103 , because the power requirement of the two-cylinder piston pump 114 can be very high and the internal combustion engine 103 can also provide this high power, for example between 200 and 300 kW.
  • the electrical drive power of the electric motor 203 of the additional unit 200 and thus also the power of the hydraulic pump 202 of the additional unit 200 and of the hydraulic motor 300 may be lower due to the limited power of the construction site power connection 400, for example in the range of 80 to 200 kW.
  • the swash plate is pivoted according to the operating mode so that it is then operated as a hydraulic motor 300.
  • the case in which the internal combustion engine 103 drives the entire hydraulic drive pump system 102 is illustrated in FIG. 6a.
  • the hydraulic directional control valve 313 is switched in such a way that the hydraulic pump 102a delivers the hydraulic oil to the two-cylinder piston pump 214 in order to drive it together with the hydraulic pump 102b.
  • the combined hydraulic pump/hydraulic motor 300/102a2 is used as the hydraulic pump 102a2.
  • the hydraulic line 305a to the hydraulic pump 202 of the additional unit 200 which is divided into the hydraulic lines 305a1 and 305a2 in this exemplary embodiment, is blocked by the directional control valve 313.
  • the additional unit 200 is also not coupled to the truck-mounted concrete pump 100 in this mode of operation.
  • the hydraulic pump 102a2 draws in the hydraulic oil required for the hydraulic drive from the hydraulic oil tank 108 via the hydraulic line 310 .
  • FIG. 6b shows the case in which the truck-mounted concrete pump 100 is driven electrically by the auxiliary unit 200.
  • the combined hydraulic pump/hydraulic motor 300/102a2 is used as the hydraulic motor 300.
  • the directional control valve 313 is switched in such a way that the hydraulic line 305a from the combined hydraulic pump/hydraulic motor 102a2/300 to the two-cylinder piston pump 114 is interrupted and the hydraulic pump 102a1 drives the two-cylinder piston pump 114 alone.
  • the directional valve 313 now releases the hydraulic line 305a1 from the hydraulic pump 202 of the auxiliary unit 200 to the hydraulic motor 300 of the truck-mounted concrete pump 100, so that the hydraulic pump 202 of the auxiliary unit 200 drives the hydraulic motor 300 of the truck-mounted concrete pump 100.
  • FIG. 7 shows a further exemplary embodiment in which the hydraulic motor 300, as already explained in connection with FIG.
  • the hydraulic drive pump system 102 is not driven by the internal combustion engine 103, as in the previous exemplary embodiments, via the power take-off 104 of the internal combustion engine 103, but via the cardan shaft 106, via the drive wheels 131 in ferry mode of the truck-mounted concrete pump 100 via the manual transmission 105 by the internal combustion engine 103 of the truck-mounted concrete pump 100 can be driven.
  • the Cardan shaft 106 is interrupted by a transfer case 303, so that during pumping operation by internal combustion engine 103, partial cardan shaft 106a drives hydraulic drive pump system 102 via transfer case 303.
  • the partial cardan shaft 106b leads from the transfer case 303 to the drive wheels 131.
  • the part cardan shafts 106a and 106b are coupled to one another by the transfer case 303 for driving the drive wheels 131.
  • the transfer case 303 can be switched to drive the hydraulic drive pump system 102 by the engine 103 or the auxiliary unit 200 as appropriate. In both of these cases, the cardan shaft 106 is decoupled from the drive wheels 131 by the transfer gearbox 303 .
  • the hydraulic motor 300 is arranged on the transfer gearbox 303 on the same side as the cardan shaft 106a.
  • the hydraulic motor 300 can also be arranged differently, for example as shown in FIGS. 2 to 5 as an example.
  • the exemplary embodiment in FIG. 7 can also be easily combined with the combined hydraulic pump/hydraulic motor 300/102a2 as in the exemplary embodiment according to FIG.
  • an electric motor 203 which drives a hydraulic pump 202 is arranged on the auxiliary unit 200 .
  • a plurality of electric motors 203 for example arranged in series or in series, could also be arranged on the auxiliary unit 200, which drive one or more hydraulic pumps 202.
  • several hydraulic motors 300 could also be arranged on the truck-mounted concrete pump 100, which are driven by one or more additional units 200 within the meaning of the invention.

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Abstract

The invention relates to a system comprising a truck-mounted concrete pump (100) and an auxiliary unit (200), wherein the truck-mounted concrete pump (100) has a hydraulically driven concrete pump system (110) for conveying concrete, a hydraulic drive pump system (102) and a combustion engine (103), wherein the combustion engine (103) of the truck-mounted concrete pump (100) is designed for driving the hydraulic drive pump system (102) and the hydraulic drive pump system (102) is designed for driving the concrete pump system (110). The object of the invention is to provide an electric drive for a truck-mounted concrete pump, with which a truck-mounted concrete pump with a combustion engine drive can be alternatively simply electrically driven. The invention achieves this objective in that the auxiliary unit (200) is provided for electrically driving the truck-mounted concrete pump (100) and has a hydraulic pump (202) and an electric motor (203), wherein the electric motor (203) is designed for driving the hydraulic pump (202) of the auxiliary unit (200), wherein the hydraulic pump (202) of the auxiliary unit (200) is designed such that is can be reversibly connected to the truck-mounted concrete pump (100) for driving the hydraulic drive pump system (102) of the truck-mounted concrete pump (100). The invention also relates to a truck-mounted concrete pump (100), an auxiliary unit (200) for a truck-mounted concrete pump (100) and the use of an auxiliary unit (200) for electrically driving the truck-mounted concrete pump (200).

Description

Figure imgf000003_0001
Zusatzaaareaat und System zum elektrischen Antrieb einer Autobetonoumoe und Autcbetcnpumpe
Figure imgf000003_0001
Auxiliary area and system for the electric drive of a truck-mounted concrete pump and truck-mounted pump
Die Erfindung betrifft ein Zusatzaggregat für den elektrischen Antrieb einer Autcbetcnpumpe. Außerdem betrifft die Erfindung eine Autobetonpumpe, die von einem solchen Zusatzaggregat elektrisch antreibbar ist, sowie ein System aus einer Autobetonpumpe und einem Zusatzaggregat, das die Autobetonpumpe elektrisch antreibt. The invention relates to an additional unit for the electric drive of an auto bed pump. The invention also relates to a truck-mounted concrete pump that can be driven electrically by such an additional unit, and to a system made up of a truck-mounted concrete pump and an additional unit that drives the truck-mounted concrete pump electrically.
Zur Reduktion des Ausstoßes von unerwünschten Abgasen und klimaschädlichem Kohlendioxid ist es wünschenswert, eine Autobetonpumpe, deren Betonpumpsystem in der Regel von einem Verbrennungsmotor angetrieben wird, auf der Baustelle elektrisch anzutreiben. In order to reduce the emission of unwanted exhaust gases and climate-damaging carbon dioxide, it is desirable to drive a truck-mounted concrete pump, whose concrete pumping system is usually driven by an internal combustion engine, electrically on the construction site.
Die Patentanmeldung DE 10 2018 214 965 A1 offenbart eine Autobetonpumpe mit einem Hydraulikantriebspumpsystem zum Antrieb des Betonpumpsystems der Autobetonpumpe, wobei das Hydraulikantriebspumpsystem wahlweise von einem Verbrennungsmotor oder einem Elektromotor angetrieben wird. Für diesen Zweck wird die Autobetonpumpe mit einem zusätzlichen Elektromotor ausgestattet. Das Hydraulikantriebspumpsystem der Autobetonpumpe ist für den Antrieb mit einem Verbrennungsmotor mit einer Leistung von über 200 Kilowattstunden ausgelegt, während der Elektromotor aufgrund der nur begrenzt zur Verfügung stehenden elektrischen Leistung das Hydraulikantriebspumpsystem oft nur mit einer Leistung unter 100 Kilowattstunden antreiben kann. Es hat sich gezeigt, dass für den Antrieb des Betonpumpsystems der Autobetonpumpe mit einem auf der Autobetonpumpe angeordneten Elektromotor keine ausreichende Antriebsleistung zur Verfügung gestellt werden kann, weil einerseits die auf einer Baustelle verfügbare elektrische Antriebsleistung nicht ausreicht und der zur Verfügung stehende Einbauraum auf der Autobetonpumpe nicht ausreicht, um einen leistungsstärkeren Elektromotor zu installieren. Zudem benötigt ein leistungsstarker Elektromotor, zum Beispiel eine Synchronmaschine, eine zusätzliche Flüssigkeitskühlung, die zusätzlich auf der Autobetonpumpe untergebracht werden muss. Weiterhin ist eine sehr große, unter Umständen hydraulisch angetriebene Kabeltrommel auf der Autobetonpumpe für die elektrische Anschlussleitung für den Elektromotor notwendig. The patent application DE 10 2018 214 965 A1 discloses a truck-mounted concrete pump with a hydraulic drive pump system for driving the concrete pump system of the truck-mounted concrete pump, the hydraulic drive pump system being optionally driven by an internal combustion engine or an electric motor. For this purpose, the truck-mounted concrete pump is equipped with an additional electric motor. The hydraulic drive pump system of the truck-mounted concrete pump is designed to be driven by an internal combustion engine with an output of over 200 kilowatt hours, while the electric motor can often only drive the hydraulic drive pump system with an output of less than 100 kilowatt hours due to the limited electrical power available. It has been shown that there is not sufficient drive power available for driving the concrete pump system of the truck-mounted concrete pump with an electric motor arranged on the truck-mounted concrete pump can be provided because on the one hand the electrical drive power available on a construction site is not sufficient and the available installation space on the truck-mounted concrete pump is not sufficient to install a more powerful electric motor. In addition, a powerful electric motor, such as a synchronous machine, requires additional liquid cooling, which must also be accommodated on the truck-mounted concrete pump. Furthermore, a very large, possibly hydraulically driven cable drum is required on the truck-mounted concrete pump for the electrical connection line for the electric motor.
Es ist daher Aufgabe der Erfindung, einen elektrischen Antrieb für eine Autobetonpumpe anzugeben, mit dem eine Autobetonpumpe mit einem Verbrennungsmotorantrieb alternativ einfach elektrisch angetrieben werden kann. It is therefore the object of the invention to specify an electric drive for a truck-mounted concrete pump, with which a truck-mounted concrete pump with an internal combustion engine drive can alternatively be simply driven electrically.
Gelöst wird diese Aufgabe durch ein System mit den Merkmalen des Anspruchs 1 , eine Autobetonpumpe mit den Merkmalen des Anspruchs 5, die von diesem Zusatzaggregat elektrisch antreibbar ist, sowie durch ein Zusatzaggregat für eine solche Autobetonpumpe mit den Merkmalen des Anspruchs 14. This object is achieved by a system with the features of claim 1, a truck-mounted concrete pump with the features of claim 5, which can be driven electrically by this additional unit, and by an additional unit for such a truck-mounted concrete pump with the features of claim 14.
Die Erfindung schlägt ein Zusatzaggregat vor, das zum elektrischen Antrieb einer Autobetonpumpe geeignet ist, wobei die Autobetonpumpe ein hydraulisch angetriebenes Betonpumpsystem zur Förderung von Beton und ein Hydraulikantriebspumpsystem und einen Verbrennungsmotor aufweist, wobei der Verbrennungsmotor der Autobetonpupe zum Antrieb des Hydraulikantriebspumpsystems und das Hydraulikantriebspumpsystem zum Antrieb des Betonpumpsystems ausgebildet ist. Die Erfindung ist insbesondere dadurch gekennzeichnet, dass das Zusatzaggregat eine Hydraulikpumpe und einen Elektromotor zum Antrieb der Hydraulikpumpe aufweist, wobei die Hydraulikpumpe des Zusatzaggregates für den Antrieb des Hydraulikantriebspumpsystems der Autobetonpumpe mit der Autobetonpumpe reversibel verbindbar ausgebildet ist. The invention proposes an additional unit that is suitable for electrically driving a truck-mounted concrete pump, the truck-mounted concrete pump having a hydraulically driven concrete pump system for pumping concrete and a hydraulic drive pump system and an internal combustion engine, the combustion engine of the truck-mounted concrete pump for driving the hydraulic drive pump system and the hydraulic drive pump system for driving the Concrete pumping system is designed. The invention is particularly characterized in that the additional unit has a hydraulic pump and an electric motor for driving the hydraulic pump, the hydraulic pump of the additional unit for driving the hydraulic drive pump system of the truck-mounted concrete pump being designed to be reversibly connectable to the truck-mounted concrete pump.
Dadurch, dass das Zusatzaggregat eine Hydraulikpumpe und einen Elektromotor zum Antrieb der Hydraulikpumpe aufweist und die Hydraulikpumpe für den Antrieb des Hydraulikantriebspumpsystems der Autobetonpumpe mit der Autobetonpumpe reversibel verbindbar ist, kann eine Autobetonpumpe konventioneller Bauart sehr einfach auf einer Baustelle elektrisch angetrieben werden. An der Autobetonpumpe sind nur wenige Änderungen notwendig, um den elektrischen Betrieb zu ermöglichen. Die Autobetonpumpe kann einfach beispielsweise mit Hydraulikölleitungen an das Zusatzaggregat angeschlossen werden, um das Betonpumpsystem der Autobetonpumpe elektrisch anzutreiben. Optional können für diese reversible Verbindung geeignete Schnellkupplungen verwendet werden, die mit geringem Aufwand und in kurzer Zeit je nach Bedarf verbunden und getrennt werden können. The fact that the additional unit has a hydraulic pump and an electric motor for driving the hydraulic pump and the hydraulic pump for driving the hydraulic drive pump system of the truck-mounted concrete pump with the Truck-mounted concrete pump can be reversibly connected, a truck-mounted concrete pump of conventional design can very easily be driven electrically on a construction site. Only a few changes are necessary on the truck-mounted concrete pump to enable electrical operation. The truck-mounted concrete pump can simply be connected to the additional unit with hydraulic oil lines, for example, in order to electrically drive the concrete pump system of the truck-mounted concrete pump. Optionally, suitable quick couplings can be used for this reversible connection, which can be connected and disconnected as required with little effort and in a short time.
Gemäß einer vorteilhaften Ausgestaltung der Erfindung weist die vom Zusatzaggregat antreibbare Autobetonpumpe einen Hydraulikmotor zum zusätzlichen Antrieb des Hydraulikantriebspumpsystems der Autobetonpumpe auf, wobei die Hydraulikpumpe des Zusatzaggregates mit dem Hydraulikmotor der Autobetonpumpe für den Antrieb des Hydraulikantriebspumpsystems der Autobetonpumpe verbindbar ist. Der Hydraulikmotor auf der Autobetonpumpe schafft eine sehr einfache Möglichkeit, das Zusatzaggregat zum elektrischen Antrieb des Hydraulikpumpenantriebes einzusetzen. According to an advantageous embodiment of the invention, the truck-mounted concrete pump that can be driven by the additional unit has a hydraulic motor for the additional drive of the hydraulic drive pump system of the truck-mounted concrete pump, the hydraulic pump of the additional unit being connectable to the hydraulic motor of the truck-mounted concrete pump for driving the hydraulic drive pump system of the truck-mounted concrete pump. The hydraulic motor on the truck-mounted concrete pump makes it very easy to use the additional unit to drive the hydraulic pump drive electrically.
Vorteilhafterweise weist das Zusatzaggregat einen Hydrauliköltank zur Aufnahme des vom Hydraulikmotor der Autobetonpumpe zurückgeführten Hydrauliköls auf. Dadurch kann das von der Hydraulikpumpe des Zusatzaggregates zum Hydraulikmotor der Autobetonpumpe geförderte Hydrauliköl einfach zum Zusatzaggregat zurückgeführt werden. The additional unit advantageously has a hydraulic oil tank for receiving the hydraulic oil returned from the hydraulic motor of the truck-mounted concrete pump. As a result, the hydraulic oil conveyed by the hydraulic pump of the auxiliary unit to the hydraulic motor of the truck-mounted concrete pump can be easily returned to the auxiliary unit.
Gemäß einer weiteren vorteilhaften Ausgestaltung ist die Hydraulikpumpe des Zusatzaggregates dazu ausgebildet, Hydrauliköl aus dem Hydrauliköltank des Zusatzaggregates anzusaugen. Dadurch, dass die Hydraulikpumpe des Zusatzaggregates das für den Betrieb benötigte Hydrauliköl direkt aus dem Hydrauliköltank des Zusatzaggregates ansaugen kann, entfällt das Erfordernis einer langen Saugleitung vom Hydraulikmotor des Zusatzaggregates zum Hydrauliköltank der Autobetonpumpe, die einen verhältnismäßig großen Querschnitt haben müsste und deshalb nur mit größerem Aufwand an die Autobetonpumpe angeschlossen werden könnte. Die Erfindung ist ferner durch eine Autobetonpumpe gekennzeichnet, die ein hydraulisch angetriebenes Betonpumpsystem zur Förderung von Beton und ein Hydraulikantriebspumpsystem und einen Verbrennungsmotor aufweist, wobei der Verbrennungsmotor zum Antrieb des Hydraulikantriebspumpsystems und das Hydraulikantriebspumpsystem zum Antrieb des Betonpumpsystems ausgebildet ist, wobei die Autobetonpumpe einen Hydraulikmotor aufweist, der zum zusätzlichen Antrieb des Hydraulikantriebspumpsystems ausgebildet ist. Das heißt, dass das Betonpumpsystem der Autobetonpumpe wahlweise von dem Verbrennungsmotor der Autobetonpumpe oder von dem Hydraulikmotor angetrieben werden kann, wodurch die Möglichkeit eröffnet wird, eine weitere Antriebsquelle, beispielsweise eine elektrisch angetriebene Antriebsquelle, einzusetzen. According to a further advantageous embodiment, the hydraulic pump of the additional unit is designed to draw in hydraulic oil from the hydraulic oil tank of the additional unit. Because the hydraulic pump of the additional unit can suck in the hydraulic oil required for operation directly from the hydraulic oil tank of the additional unit, there is no need for a long suction line from the hydraulic motor of the additional unit to the hydraulic oil tank of the truck-mounted concrete pump, which would have to have a relatively large cross-section and therefore only with great effort could be connected to the truck-mounted concrete pump. The invention is further characterized by a truck-mounted concrete pump, which has a hydraulically driven concrete pump system for pumping concrete and a hydraulic drive pump system and an internal combustion engine, the internal combustion engine being designed to drive the hydraulic drive pump system and the hydraulic drive pump system being designed to drive the concrete pump system, the truck-mounted concrete pump having a hydraulic motor, which is designed to additionally drive the hydraulic drive pump system. This means that the concrete pump system of the truck-mounted concrete pump can be driven either by the internal combustion engine of the truck-mounted concrete pump or by the hydraulic motor, which opens up the possibility of using a further drive source, for example an electrically driven drive source.
Gemäß einer vorteilhaften Ausführungsform der Erfindung ist der Hydraulikmotor der Autobetonpumpe mit einer von einem Elektromotor angetriebenen Hydraulikpumpe eines Zusatzaggregates für den Antrieb des Betonpumpsystems reversibel verbindbar ausgebildet. Dadurch, dass der Hydraulikmotor der Autobetonpumpe mit einer von einem Elektromotor angetriebenen Hydraulikpumpe für den Antrieb des Betonpumpsystems ausgebildet ist, kann das Betonpumpsystem sehr einfach elektrisch angetrieben werden und der Verbrennungsmotor der Autobetonpumpe muss beim Arbeitsbetrieb auf der Baustelle nicht mehr in Betrieb sein. According to an advantageous embodiment of the invention, the hydraulic motor of the truck-mounted concrete pump is designed to be reversibly connectable to a hydraulic pump, driven by an electric motor, of an additional unit for driving the concrete pump system. Because the hydraulic motor of the truck-mounted concrete pump is designed with a hydraulic pump driven by an electric motor to drive the concrete pump system, the concrete pump system can be driven electrically very easily and the combustion engine of the truck-mounted concrete pump no longer has to be in operation when working on the construction site.
Gemäß einer bevorzugten Ausführungsform der Erfindung weist das Hydraulikantriebspumpsystem der Autobetonpumpe mehrere mechanisch miteinander gekoppelte Hydraulikpumpen auf, wobei der Hydraulikmotor zum Antrieb der miteinander gekoppelten Hydraulikpumpen ausgebildet ist. Somit reicht ein Hydraulikmotor zum Antrieb aller Hydraulikpumpen des Hydraulikantriebspumpsystems der Autobetonpumpe aus. According to a preferred embodiment of the invention, the hydraulic drive pump system of the truck-mounted concrete pump has a plurality of hydraulic pumps that are mechanically coupled to one another, with the hydraulic motor being designed to drive the hydraulic pumps that are coupled to one another. Thus, one hydraulic motor is sufficient to drive all hydraulic pumps of the hydraulic drive pump system of the truck-mounted concrete pump.
Vorteilhafterweise ist der Hydraulikmotor der Autobetonpumpe zwischen dem Verbrennungsmotor und den miteinander gekoppelten Hydraulikpumpen des Hydraulikantriebspumpsystems angeordnet. Diese Anordnung hat den Vorteil, dass im Prinzip nur die Antriebswelle vom Verbrennungsmotor zum Hydraulikantriebspumpsystem unterbrochen werden muss, um den Hydraulikmotor dort einzukoppeln. Der Hydraulikmotor könnte aber auch direkt auf der Antriebswelle vom Verbrennungsmotor zum Hydraulikantriebspumpsystem angeordnet sein. The hydraulic motor of the truck-mounted concrete pump is advantageously arranged between the internal combustion engine and the hydraulic pumps of the hydraulic drive pump system which are coupled to one another. This arrangement has the advantage that, in principle, only the drive shaft from the internal combustion engine to the hydraulic drive pump system has to be interrupted in order to to couple the hydraulic motor there. Alternatively, the hydraulic motor could be located directly on the drive shaft from the internal combustion engine to the hydraulic drive pump system.
Gemäß einer weiteren vorteilhaften Ausführungsform ist zwischen dem Verbrennungsmotor der Autobetonpumpe und dem Hydraulikmotor eine Kupplung angeordnet ist, die zur An- und Abkopplung des Hydraulikmotors vom Verbrennungsmotors ausgebildet ist. Dadurch kann der Hydraulikmotor vom Verbrennungsmotor während des elektrischen Betriebes durch das Zusatzaggregat entkoppelt werden und das Hydraulikpumpensystem alleine antreiben, ohne, dass sich die zum Verbrennungsmotor führende Antriebswelle dreht. According to a further advantageous embodiment, a coupling is arranged between the internal combustion engine of the truck-mounted concrete pump and the hydraulic motor, which coupling is designed for coupling and decoupling the hydraulic motor from the internal combustion engine. As a result, the hydraulic motor can be decoupled from the internal combustion engine during electrical operation by the additional unit and drive the hydraulic pump system alone without the drive shaft leading to the internal combustion engine rotating.
Vorteilhafterweise weist das Hydraulikantriebspumpsystem der Autobetonpumpe mehrere in Reihe angeordnete und mechanisch miteinander gekoppelte Hydraulikpumpen auf und der Hydraulikmotor ist zwischen zwei dieser Hydraulikpumpen angeordnet. So kann der Hydraulikmotor quasi in das Hydraulikantriebspumpsystem integriert werden, wobei der Hydraulikpumpenstrang, der durch die Hydraulikpumpen des Hydraulikantriebspumpsystems gebildet ist, für den Antrieb durch den Hydraulikmotor nur unwesentlich verlängert wird. Advantageously, the hydraulic drive pumping system of the truck-mounted concrete pump comprises a plurality of hydraulic pumps arranged in series and mechanically coupled to one another, and the hydraulic motor is arranged between two of these hydraulic pumps. In this way, the hydraulic motor can be integrated into the hydraulic drive pump system, with the hydraulic pump train, which is formed by the hydraulic pumps of the hydraulic drive pump system, being only slightly lengthened for the drive by the hydraulic motor.
Vorteilhafterweise ist der Hydraulikmotor über ein Umlenkgetriebe zwischen zwei Hydraulikpumpen angeordnet. Weil ein Umlenkgetriebe in der Regel etwas schmaler als ein Hydraulikmotor ist, kann durch diese Maßnahme die Verlängerung des Hydraulikpumpenstranges noch etwas kürzer ausfallen, als wenn der Hydraulikmotor direkt zwischen den Hydraulikpumpen angeordnet wird. The hydraulic motor is advantageously arranged between two hydraulic pumps via a deflection gear. Because a deflection gear is generally somewhat narrower than a hydraulic motor, this measure can result in the extension of the hydraulic pump line being somewhat shorter than if the hydraulic motor were arranged directly between the hydraulic pumps.
Vorteilhafterweise ist zwischen dem Hydraulikmotor und dem Hydraulikantriebspumpsystem ein Verteilerschaltgetriebe zur Ankopplung des Hydraulikmotors an das Hydraulikantriebspumpsystem angeordnet. Ein Verteilerschaltgetriebe ermöglicht es, den Hydraulikmotor sehr einfach an das Hydraulikantriebspumpsystem anzukoppeln. Zudem kann das Verteilerschaltgetriebe auch zur An- und Abkopplung des Verbrennungsmotors an das Hydraulikantriebspumpsystems verwendet werden. Über das Verteilerschaltgetriebe können der Hydraulikmotor und der Verbrennungsmotor das Hydraulikantriebspumpsystem gemeinsam oder jeweils alleine antreiben. A transfer gearbox for coupling the hydraulic motor to the hydraulic drive pump system is advantageously arranged between the hydraulic motor and the hydraulic drive pump system. A transfer case makes it very easy to couple the hydraulic motor to the hydraulic drive pump system. In addition, the transfer case can also be used to couple and decouple the internal combustion engine to the hydraulic drive pump system. About the Transfer cases, the hydraulic motor and the internal combustion engine can drive the hydraulic drive pump system together or individually.
In einer besonders bevorzugten Ausführungsform weist das Hydraulikantriebspumpsystem mehrere mechanisch miteinander gekoppelte Hydraulikpumpen auf, wobei eine der Hydraulikpumpen zusätzlich als Hydraulikmotor ausgebildet ist und das restliche Hydraulikantriebspumpsystem durch das Zusatzaggregat antreibt. Dadurch, dass eine der Hydraulikpumpen zusätzlich die Funktion eines Hydraulikmotors übernimmt, ist kein zusätzlicher Einbauraum auf der Autobetonpumpe für den elektrischen Antrieb der Autobetonpumpe durch das Zusatzaggregat notwendig. In a particularly preferred embodiment, the hydraulic drive pump system has a plurality of hydraulic pumps that are mechanically coupled to one another, with one of the hydraulic pumps also being designed as a hydraulic motor and driving the rest of the hydraulic drive pump system by the auxiliary unit. Because one of the hydraulic pumps also assumes the function of a hydraulic motor, no additional installation space is required on the truck-mounted concrete pump for the electric drive of the truck-mounted concrete pump by the additional unit.
Außerdem betrifft die Erfindung die Verwendung eines Zusatzaggregates, das, wie zuvor beschrieben, eine von einem Elektromotor angetriebene Hydraulikpumpe aufweist, zum hydraulischen Antrieb eines Hydraulikmotors einer von dem Zusatzaggregat separaten Autobetonpumpe. Die Autobetonpumpe kann wie zuvor und im Folgenden näher beschrieben ausgebildet sein. Das Zusatzaggregat ist von der Autobetonpumpe separat, was bedeutet, dass es sich um zwei verschiedene, getrennte Einheiten handelt, insbesondere ist das Zusatzaggregat keine integrierte Komponente der Autobetonpumpe. Das Zusatzaggregat ist nicht in oder an der Autobetonpumpe verbaut. Das Zusatzaggregat und die Autobetonpumpe können bei getrennter Verbindung vollständig unabhängig voneinander bewegt werden. Die Hydraulikpumpe des Zusatzaggregates wird bei Bedarf (z.B. in Abhängigkeit vom Vorhandensein einer ausreichenden elektrischen Stromversorgung auf einer Baustelle) zum hydraulischen Antrieb eines Hydraulikmotors der Autobetonpumpe mit diesem über (z.B. flexible) Hydraulikölleitungen und - vorzugsweise - über geeignete Hydraulik-Schnellkupplungen reversibel verbunden. In addition, the invention relates to the use of an additional unit which, as described above, has a hydraulic pump driven by an electric motor, for hydraulically driving a hydraulic motor of a truck-mounted concrete pump that is separate from the additional unit. The truck-mounted concrete pump can be designed as described above and in more detail below. The auxiliary unit is separate from the truck-mounted concrete pump, which means that they are two different, separate units, in particular, the auxiliary unit is not an integrated component of the truck-mounted concrete pump. The additional unit is not installed in or on the truck-mounted concrete pump. The additional unit and the truck-mounted concrete pump can be moved completely independently of each other when they are disconnected. The hydraulic pump of the additional unit is reversibly connected to the truck-mounted concrete pump via (e.g. flexible) hydraulic oil lines and - preferably - via suitable hydraulic quick-release couplings for the hydraulic drive of a hydraulic motor of the truck-mounted concrete pump if required (e.g. depending on the presence of a sufficient electrical power supply on a construction site).
Weitere Merkmale, Einzelheiten und Vorteile der Erfindung ergeben sich aufgrund der nachfolgenden Beschreibung sowie anhand der Zeichnungen, die Ausführungsbeispiele der Erfindung zeigen. Einander entsprechende Gegenstände oder Elemente sind in allen Figuren mit den gleichen Bezugszeichen versehen. Es zeigen: Figur 1 erfindungsgemäßes System zum elektrischen Antrieb einerFurther features, details and advantages of the invention result from the following description and from the drawings, which show exemplary embodiments of the invention. Corresponding objects or elements are provided with the same reference symbols in all figures. Show it: Figure 1 inventive system for electrically driving a
Autobetonpumpe mit einem Zusatzaggregat; truck-mounted concrete pump with an additional unit;
Figur 2 detaillierte Darstellung ein sr ersten Ausführungsform des erfindungsgemäßen Systems; FIG. 2 shows a detailed representation of a first embodiment of the system according to the invention;
Figur 3 Prinzipdarstellung einer zweiten Ausführungsform des erfindungsgemäßen Systems; FIG. 3 shows the principle of a second embodiment of the system according to the invention;
Figur 4 Prinzipdarstellung einer dritten Ausführungsform des erfindungsgemäßen Systems; FIG. 4 Principle representation of a third embodiment of the system according to the invention;
Figur 5 Prinzipdarstellung einer vierten Ausführungsform des erfindungsgemäßen Systems; FIG. 5 shows the principle of a fourth embodiment of the system according to the invention;
Figur 6a, b Prinzipdarstellung einer fünften Ausführungsform des erfindungsgemäßen Systems; FIG. 6a, b Principle representation of a fifth embodiment of the system according to the invention;
Figur ? Prinzipdarstellung einer sechsten Ausführungsform des erfindungsgemäßen Systems. figure ? Schematic representation of a sixth embodiment of the system according to the invention.
Die Figur 1 zeigt eine Autobetonpumpe 100, ein Zusatzaggregat 200 und ein System zum elektrischen Antrieb einer Autobetonpumpe 100 mit einem Zusatzaggregat 200 gemäß der Erfindung. FIG. 1 shows a truck-mounted concrete pump 100, an additional unit 200 and a system for electrically driving a truck-mounted concrete pump 100 with an additional unit 200 according to the invention.
In den Figuren sind alle Elemente, die bei einer konventionellen Autobetonpumpe 100 üblicherweise vorhanden sind, mit dem Bezugszeichen 1XX versehen. Alle Elemente, die dem Zusatzaggregat 200 zuzuordnen sind, sind mit dem Bezugszeichen 2XX versehen. In the figures, all elements that are usually present in a conventional truck-mounted concrete pump 100 are provided with the reference number 1XX. All elements that are associated with the additional unit 200 are provided with the reference numeral 2XX.
Die Autobetonpumpe 100 weist ein hydraulisch angetriebenes Betonpumpsystem 110 zur Förderung von Beton und ein Hydraulikantriebspumpsystem 102 und einen Verbrennungsmotor 103 (Fig.2) auf, wobei der Verbrennungsmotor 103 zum Antrieb des Hydraulikantriebspumpsystem 102 und das Hydraulikantriebspumpsystem 102 zum Antrieb des Betonpumpsystems 110 ausgebildet ist. The truck-mounted concrete pump 100 has a hydraulically driven concrete pump system 110 for pumping concrete and a hydraulic drive pump system 102 and an internal combustion engine 103 (Fig.2), the internal combustion engine 103 for driving the hydraulic drive pump system 102 and the Hydraulic drive pump system 102 is designed to drive the concrete pump system 110 .
Die hier beispielhaft dargestellte Autobetonpumpe 100 weist ein Betonpumpsystem 110, das auf einem Lkw-Fahrgestell 130 mit Fahrerhaus aufgebaut ist. Das Betonpumpsystem 110 umfasst verschiedene hydraulische Verbraucher beziehungsweise Arbeitseinrichtungen 111 , 112, 113, 114, 115, zum Beispiel ein Rührwerk 111 zum Durchmischen des Frischbetons im Einfülltrichter 116, eine Zweizylinderkolbenpumpe 114 mit Förderzylindern, die von Differentialhydraulikzylindern angetrieben werden und einem Betonumschaltventil 112. Statt einer Zweizylinderkolbenpumpe 114 könnte auch eine andere Pumptechnik eingesetzt werden, beispielsweise eine Rotorschlauchpumpe. Weitere hydraulische Verbraucher des Betonpumpsystems 110 sind beispielsweise eine Abstützung 113 und ein Betonverteilermast 115. Die Autobetonpumpe 100 könnte zusätzlich mit einer hydraulisch angetriebenen Mischtrommel ausgestattet sein (Fahrmischerbetonpumpe) oder beispielsweise als eine auf einem Lkw- Fahrgestell montierte einfache Betonpumpe ohne Mast und Abstützung ausgebildet sein. The truck-mounted concrete pump 100 shown here as an example has a concrete pump system 110 which is built on a truck chassis 130 with a driver's cab. The concrete pump system 110 includes various hydraulic consumers or working devices 111, 112, 113, 114, 115, for example an agitator 111 for mixing the fresh concrete in the hopper 116, a two-cylinder piston pump 114 with delivery cylinders that are driven by differential hydraulic cylinders and a concrete switching valve 112. Instead of a Two-cylinder piston pump 114 could also use another pumping technique, for example a peristaltic rotor pump. Other hydraulic consumers of the concrete pump system 110 are, for example, a support 113 and a concrete placing boom 115. The truck-mounted concrete pump 100 could also be equipped with a hydraulically driven mixing drum (truck mixer concrete pump) or, for example, be designed as a simple concrete pump mounted on a truck chassis without a boom and support.
Der Verbrennungsmotor 103 (Fig.2) des LKW-Fahrgestells 130 treibt im Fährbetrieb die Fahrantriebsräder 131 des LKW an. Sobald die Autobetonpumpe 100 den Arbeitsstandort erreicht hat, läuft nach dem Stand der Technik der Verbrennungsmotor 103 weiter und treibt das Betonpumpsystems 110 über den Nebenabtrieb 104 oder die Kardanwelle 106 an. Bei dem Nebenabtrieb 104 handelt es sich beispielweise über einen direkt mit der Kurbelwelle des Verbrennungsmotors gekoppelten Nebenabtrieb (NMV-Nebenabtrieb Motorabhängig Vorgebaut) oder jede andere Form eines Nebenabtriebs, zum Beispiel einen getriebeabhängigen Nebenabtrieb. Für den Antrieb durch den Verbrennungsmotor 103 weist das Hydraulikantriebspumpsystem 102 der Autobetonpumpe 100 eine Mehrzahl von Hydraulikpumpen 102a1 , 102a2, 102b, 102c, 102d (Fig.2) auf, die die hydraulischen Verbraucher 111 , 112, 113, 114, 115 des Betonpumpsystems 110 über Hydraulikversorgungsleitungen antreiben. Die Hydraulikpumpen 102a1 , 102a2, 102b, 102c, 102d (Fig.2) saugen das Hydrauliköl für den Antrieb des Betonpumpsystems 110 aus einem Hydrauliköltank 108 (Fig.2) der Autobetonpumpe 100 an. The internal combustion engine 103 (FIG. 2) of the truck chassis 130 drives the drive wheels 131 of the truck during ferry operation. According to the prior art, as soon as the truck-mounted concrete pump 100 has reached the work site, the internal combustion engine 103 continues to run and drives the concrete pump system 110 via the power take-off 104 or the cardan shaft 106 . The power take-off 104 is, for example, a power take-off directly coupled to the crankshaft of the internal combustion engine (NMV power take-off engine-dependent pre-assembled) or any other form of power take-off, for example a transmission-dependent power take-off. For the drive by the internal combustion engine 103, the hydraulic drive pump system 102 of the truck-mounted concrete pump 100 has a plurality of hydraulic pumps 102a1, 102a2, 102b, 102c, 102d (Fig. 2), which the hydraulic consumers 111, 112, 113, 114, 115 of the concrete pump system 110 driven via hydraulic supply lines. The hydraulic pumps 102a1, 102a2, 102b, 102c, 102d (Fig. 2) suck the Hydraulic oil for driving the concrete pump system 110 from a hydraulic oil tank 108 (FIG. 2) of the truck-mounted concrete pump 100.
Das Zusatzaggregat 200 des erfindungsgemäßen Systems weist eine Hydraulikpumpe 202 zum hydraulischen Antrieb des Hydraulikantriebspumpsystems 102 der Autobetonpumpe 100 und einen Elektromotor 203 zum Antrieb der Hydraulikpumpe 202 auf. Der Elektromotor 203 ist über eine Leistungsverteileinheit 205, eine Stromleitung 222 und einen Stromanschluss 207 mit einem Netzanschluss, beispielsweise einem Baustellenstromverteiler 400, verbunden. Falls die Stromabgabe von einem einzigen Netzanschluss unter Umständen nicht ausreicht, um den Elektromotor 203 des Zusatzaggregates 200 mit einer ausreichenden elektrischen Leistung zu betreiben, könnten beispielsweise auch mehrere Netzanschlüsse eines Baustromverteilers 400 oder mehrerer Baustromverteiler 400 verwendet werden, so dass sich die elektrischen Leistungen der Netzanschlüsse addieren, um den Elektromotor 203 mit einer ausreichend hohen elektrischen Leistung zu versorgen. Das Zusatzaggregat 200 kann beispielsweise zusätzlich einen optionalen Akkumulator 206 aufweisen, der den Elektromotor 203 je nach Kapazität des Akkumulators 206 für einen gewissen Zeitraum alleine antreiben kann oder zusätzlichen Strom in Ergänzung zum Baustellenstrom zur Verfügung stellt um Leistungsspitzen des Betonpumpsystems 110 abzufangen. Der Akkumulator 206 kann zum Beispiel in Pumppausen oder Phasen geringen Leistungsbedarfs des Betonpumpsystems 110 vom Baustellenstromverteiler 400 über die elektrische Leistungsverteileinheit 205 geladen werden. Die Kapazität des Akkumulators 206 könnte beispielsweise auch so groß sein, dass auf den Baustellenstromanschluss 400 vollständig verzichtet werden kann. Alternativ oder zusätzlich zum Akkumulator 206 könnte eine Brennstoffzelle verwendet werden. Der Akkumulator 206 ist beispielsweise ein Hochspannungsakkumulator (HV). Der Akkumulator 206 kann beispielsweise auch ausserhalb des Zusatzaggregates 200 angeordnet sein. Der Baustellenstromverteiler 400 könnte auch um eine Brennstoffzelle oder einen elektrischen Akkumulator, beispielsweise zur Versorgung der gesamten Baustelle, ergänzt werden. Zusätzlich oder alternativ zum Akkumulator 206 könnte das Zusatzaggregat 200 einen nicht dargestellten Superkondensator zur Überbrückung kurzfristiger Leistungsspitzen aufweisen. Das Zusatzaggregat 200 könnte beispielsweise auf einem Kleintransporter oder einem Anhänger montiert oder beispielsweise in einem Container angeordnet sein und wird für den Betrieb nahe an der Autobetonpumpe 100, beispielsweise zwischen den Stützbeinen der Abstützung 113 abgestellt. The additional unit 200 of the system according to the invention has a hydraulic pump 202 for hydraulically driving the hydraulic drive pump system 102 of the truck-mounted concrete pump 100 and an electric motor 203 for driving the hydraulic pump 202 . The electric motor 203 is connected via a power distribution unit 205, a power line 222 and a power connection 207 to a mains connection, for example a construction site power distributor 400. If the power output from a single mains connection is not sufficient under certain circumstances to operate the electric motor 203 of the additional unit 200 with sufficient electrical power, several mains connections of a construction site power distributor 400 or several construction site power distributors 400 could be used, so that the electrical power of the mains connections add up to supply the electric motor 203 with a sufficiently high electric power. The additional unit 200 can, for example, also have an optional accumulator 206, which can drive the electric motor 203 alone for a certain period of time, depending on the capacity of the accumulator 206, or provides additional electricity to supplement the construction site electricity in order to absorb power peaks of the concrete pump system 110. The accumulator 206 can, for example, be charged by the construction site power distributor 400 via the electrical power distribution unit 205 during pump pauses or phases of low power requirement of the concrete pump system 110 . The capacity of the accumulator 206 could also be so large, for example, that the construction site power connection 400 can be completely dispensed with. A fuel cell could be used as an alternative or in addition to the accumulator 206 . The accumulator 206 is, for example, a high-voltage accumulator (HV). The accumulator 206 can also be arranged outside of the additional unit 200, for example. The construction site power distributor 400 could also be supplemented with a fuel cell or an electrical accumulator, for example to supply the entire construction site. In addition or as an alternative to the accumulator 206, the additional unit 200 could have a supercapacitor (not shown) for bridging short-term power peaks. The auxiliary unit 200 could be mounted on a pickup truck or a trailer, for example, or arranged in a container, for example, and is parked close to the truck-mounted concrete pump 100, for example between the support legs of the support 113, for operation.
In Figur 2 ist ein detaillierterer Hydraulikplan einer Ausführungsform des erfindungsgemäßen Systems dargestellt. Alle Elemente, die bei einer konventionell, das heißt mit dem Verbrennungsmotor 103 angetriebenen Autobetonpumpe 100 für den elektrischen Antrieb durch das Zusatzaggregat 200 zusätzlich vorgesehen beziehungsweise nachgerüstet werden müssen, sind hier mit den Bezugszeichen 3XX versehen, sofern diese nicht schon aus anderen Gründen an der Autobetonpumpe 100 vorhanden sind. FIG. 2 shows a more detailed hydraulic diagram of an embodiment of the system according to the invention. All elements that have to be additionally provided or retrofitted in a conventional truck-mounted concrete pump, i.e. one driven by the internal combustion engine 103, for the electric drive by the auxiliary unit 200 are provided with the reference symbols 3XX here, provided they are not already on the truck-mounted concrete pump for other reasons 100 are available.
Zum besseren Verständnis der Erfindung wird im Folgenden zunächst der konventionelle Betrieb der Autobetonpumpe 100 mit dem Verbrennungsmotor 103 beschrieben. For a better understanding of the invention, the conventional operation of the truck-mounted concrete pump 100 with the internal combustion engine 103 is first described below.
Das in Figur 2 dargestellte Hydraulikantriebspumpsystem 102 der Autobetonpumpe 100, dass vom Verbrennungsmotor 103 angetrieben wird, weist beispielsweise zwei Hydraulikpumpen 102a1 und 102a2 auf, die im Verbrennungsmotorbetrieb über eine gemeinsame Hydraulikversorgungsleitung die Zweizylinderkolbenpumpe 114 des Betonpumpsystems 110 antreiben. Aufgrund der hohen Leistung des Verbrennungsmotors 103 weist die Autobetonpumpe 100 in diesem Beispiel zwei hintereinander angeordnete, das heißt, mechanisch in Reihe angeordnete Hydraulikpumpen 102a1 und 102a2 auf, um eine möglichst hohe Pumpleistung zu erzielen und damit die Leistung des Verbrennungsmotors 103 für den Antrieb der Zweizylinderkolbenpumpe 114 voll zu nutzen. The hydraulic drive pump system 102 of the truck-mounted concrete pump 100 shown in Figure 2, which is driven by the internal combustion engine 103, has, for example, two hydraulic pumps 102a1 and 102a2, which in the internal combustion engine mode drive the two-cylinder piston pump 114 of the concrete pump system 110 via a common hydraulic supply line. Due to the high output of the internal combustion engine 103, the truck-mounted concrete pump 100 in this example has two hydraulic pumps 102a1 and 102a2 arranged one behind the other, i.e. mechanically arranged in series, in order to achieve the highest possible pump output and thus the output of the internal combustion engine 103 for driving the two-cylinder piston pump 114 full use.
Die ebenfalls hintereinander angeordneten und mechanisch in Reihe gekoppelten Hydraulikpumpen 102b, 102c und 102d treiben das Betonumschaltventil 112, die Abstützung 113, den Betonverteilermast 115 und das Rührwerk 111 an, wobei die beispielsweise als Konstantflusspumpe ausgebildete, das heißt nicht regelbare Hydraulikpumpe 102b das Beton-Umschaltventil 112 über einen nicht dargestellten zwischengeschalteten Hydraulikdruckspeicher antreibt. Die ebenfalls als Konstantflusspumpe ausgebildete Hydraulikpumpe 102d treibt das Rührwerk 111 im E infü I Itrichter 116 der Autobetonpumpe 100 an. The hydraulic pumps 102b, 102c and 102d, which are also arranged one behind the other and are mechanically coupled in series, drive the concrete switching valve 112, the support 113, the concrete placing boom 115 and the agitator 111, with the hydraulic pump 102b, which is designed as a constant flow pump, i.e. cannot be controlled, driving the concrete switching valve 112 drives via an intermediate hydraulic accumulator, not shown. The Hydraulic pump 102d, also designed as a constant flow pump, drives the agitator 111 in the infeed funnel 116 of the truck-mounted concrete pump 100.
Die damit zu einem sogenannten Hydraulikpumpenstrang gekoppelten Hydraulikpumpen 102a-d des Hydraulikantriebspumpsystems 102 saugen im Betrieb Hydrauliköl aus dem Hydrauliköltank 108 der Autobetonpumpe 100 an. Von den hydraulischen Verbrauchern 111 , 112, 113, 114, 115 fließt das Hydrauliköl über Hydraulikölrücklaufleitungen 122a-d zurück in den Hydrauliköltank 108 der Autobetonpumpe 100. The hydraulic pumps 102a-d of the hydraulic drive pump system 102, which are thus coupled to form a so-called hydraulic pump train, suck hydraulic oil from the hydraulic oil tank 108 of the truck-mounted concrete pump 100 during operation. The hydraulic oil flows from the hydraulic consumers 111, 112, 113, 114, 115 via hydraulic oil return lines 122a-d back into the hydraulic oil tank 108 of the truck-mounted concrete pump 100.
Abhängig von der Ausstattung der Autobetonpumpe 100 könnte diese zusätzliche Hydraulikpumpen aufweisen. Falls die Autobetonpumpe 100 beispielsweise keinen Betonverteilermast 115 und keine Abstützung 113 aufweist, kann die entsprechende Hydraulikpumpe 102c entfallen. Im Falle einer Fahrmischerbetonpumpe könnte beispielsweise eine zusätzliche Hydraulikpumpe zum Antrieb einer Mischtrommel vorgesehen sein. Die Zuordnung der Hydraulikpumpen 102a-d ist variabel, das heißt insbesondere, dass beispielsweise die Konstantflusspumpen 102c und 102d weitere hydraulische Verbraucher antreiben oder beispielsweise zu einer Hydraulikpumpe zusammengefasst werden können. Depending on how the truck-mounted concrete pump 100 is equipped, it could have additional hydraulic pumps. If the truck-mounted concrete pump 100 has no concrete placing boom 115 and no support 113, for example, the corresponding hydraulic pump 102c can be omitted. In the case of a truck mixer concrete pump, for example, an additional hydraulic pump could be provided to drive a mixing drum. The assignment of the hydraulic pumps 102a-d is variable, which means in particular that, for example, the constant-flow pumps 102c and 102d drive additional hydraulic consumers or can be combined to form a hydraulic pump, for example.
Im Folgenden wird der elektrische Antrieb der Autobetonpumpe 100 mittels des Zusatzaggregates 200 gemäß der Erfindung beschrieben. The electric drive of the truck-mounted concrete pump 100 by means of the additional unit 200 according to the invention is described below.
Die vom Elektromotor 203 angetriebene Hydraulikpumpe 202 des Zusatzaggregates 200 treibt über Hydraulikölleitung 209a, die Hydraulik- Schnellkupplung 304a und die Hydraulikölleitung 305a den Hydraulikmotor 300 auf der Autobetonpumpe 100 an, der beispielsweise über eine Antriebswelle 306 mit dem Hydraulikantriebspumpsystem 102 mechanisch gekoppelt ist. Der Hydraulikmotor 300 kann beispielsweise auch direkt über einen Durchtrieb mit der Hydraulikpumpe 102a1 gekoppelt sein. Auf der Eingangsseite ist der Hydraulikmotor 300 beispielsweise über eine optionale lösbare Kupplung 301 mit dem Nebenabtrieb 104 des Verbrennungsmotors 103 gekoppelt. Durch die Kupplung 301 kann die Eingangsseite des Hydraulikmotors 300 während des Antriebs durch die Hydraulikpumpe 202 vom Nebenabtrieb 104 mechanisch entkoppelt werden. Bei geschlossener Kupplung 301 treibt der Verbrennungsmotor 103 das Hydraulikantriebspumpsystem 102 an, wenn der Hydraulikmotor 300 nicht vom Zusatzaggregat 200 angetrieben wird. Für den Antrieb des Hydraulikantriebspumpsystems 102 durch den Verbrennungsmotor 103 wird der Hydraulikmotor 300 beispielsweise in den Leerlauf geschaltet. Der Verbrennungsmotor 103 und der Hydraulikmotor 300 könnten aber auch beispielsweise bei geschlossener Kupplung 301 das Hydraulikantriebspumpsystem 102 gemeinsam antreiben. Der Antrieb könnte dann so ausgelegt werden, dass beispielsweise der Hydraulikmotor 300 ausreichend Antriebsenergie für eine Grundlast, zum Beispiel für den Antrieb des Verteilermastes 115 und des Rührwerkes 111 zur Verfügung stellt und der Verbrennungsmotor 103 zusätzliche Antriebsenergie für den Betrieb der Zweizylinderkolbenpumpe 114 und des Betonumschaltventils 112 zur Verfügung stellt. Der zusätzliche Antrieb des Verbrennungsmotor 103 kann beispielsweise auch nur verwendet werden, um zeitweilige Leistungsspitzen des Betonpumpsystem 110 abzufangen. The hydraulic pump 202 of the auxiliary unit 200 driven by the electric motor 203 drives the hydraulic motor 300 on the truck-mounted concrete pump 100 via hydraulic oil line 209a, the hydraulic quick coupling 304a and the hydraulic oil line 305a, which is mechanically coupled to the hydraulic drive pump system 102, for example via a drive shaft 306. The hydraulic motor 300 can, for example, also be coupled directly to the hydraulic pump 102a1 via a through drive. On the input side, the hydraulic motor 300 is coupled to the power take-off 104 of the internal combustion engine 103 via an optional detachable clutch 301, for example. The clutch 301 allows the input side of the hydraulic motor 300 to be mechanically coupled by the power take-off 104 while it is being driven by the hydraulic pump 202 be decoupled. With the clutch 301 closed, the engine 103 drives the hydraulic drive pump system 102 when the hydraulic motor 300 is not being driven by the auxiliary unit 200 . For example, to drive the hydraulic drive pump system 102 by the engine 103, the hydraulic motor 300 is idled. However, the internal combustion engine 103 and the hydraulic motor 300 could also drive the hydraulic drive pump system 102 together, for example when the clutch 301 is closed. The drive could then be designed in such a way that, for example, the hydraulic motor 300 provides sufficient drive energy for a base load, for example for driving the placing boom 115 and the agitator 111, and the combustion engine 103 provides additional drive energy for the operation of the two-cylinder piston pump 114 and the concrete switching valve 112 provides. The additional drive of the internal combustion engine 103 can, for example, only be used to intercept temporary power peaks of the concrete pump system 110 .
Der Hydraulikmotor 300 ist über die Hydraulikölrücklaufleitungen 305b und 209b, die durch eine Hydraulikschnellkupplung 304b miteinander verbunden sind, mit dem Hydrauliköltank 208 des Zusatzaggregates 200 reversibel verbunden. In diesem Fall saugt die Hydraulikpumpe 202 des Zusatzaggregates 200 das für den Antrieb benötigte Hydrauliköl, wie in Figur 2 dargestellt, beispielsweise direkt aus dem Hydrauliköltank 208 des Zusatzaggregates über eine Hydraulikleitung an. Die Hydraulikölrücklaufleitungen 305b und 209b können beispielsweise auch direkt zu der Hydraulikpumpe 202 des Zusatzaggregates 200 führen, so dass auf dem Zusatzaggregat 200 nur ein kleiner oder kein Hydrauliköltank 208 vorhanden sein muss. The hydraulic motor 300 is reversibly connected to the hydraulic oil tank 208 of the additional unit 200 via the hydraulic oil return lines 305b and 209b, which are connected to one another by a hydraulic quick coupling 304b. In this case, the hydraulic pump 202 of the additional unit 200 draws in the hydraulic oil required for the drive, as shown in FIG. 2, for example directly from the hydraulic oil tank 208 of the additional unit via a hydraulic line. The hydraulic oil return lines 305b and 209b can, for example, also lead directly to the hydraulic pump 202 of the additional unit 200, so that only a small or no hydraulic oil tank 208 has to be present on the additional unit 200.
In dem Ausführungsbeispiel nach Figur 2 führt zusätzlich eine Hydraulikleitung 309 vom Hydraulikmotor 300 zum Hydrauliköltank 108 der Autobetonpumpe 100, um Leckageöl des Hydraulikmotors 300 abzuführen. Damit das Leckageöl bei längerem Betrieb des Hydraulikmotors 300 nicht zu einem Überlauf des Hydrauliköltanks 108 der Autobetonpumpe 100 führt, kann beispielsweise eine Rücklaufleitung 310 vom Hydrauliköltank 108 zum Hydrauliköltank 208 des Zusatzaggregates 200 führen, um das Leckageöl wieder in den Arbeitskreis zurückzuführen. Das Leckageöl kann beispielsweise durch die Schwerkraft vom üblicherweise etwas höher gelegenen Hydrauliköltank 108 der Autobetonpumpe 100 zum Hydrauliköltank 208 des Zusatzaggregates fließen oder eine zusätzliche, nicht dargestellte, Hydraulikpumpe auf der Autobetonpumpe 100 fördert das Leckageöl über die Hydraulikleitung 310 zum Hydrauliköltank 208 des Zusatzaggregates 200. Eine der Hydraulikpumpen 102a-d des Hydraulikantriebspumpsystems 102 könnte auch die Rückforderung des Leckageöls ausgestaltet sein. Das Leckageöl des Hydraulikmotors 300 kann auch direkt, ohne den Umweg über den Hydrauliköltank 108 der Autobetonpumpe 100, zum Hydrauliköltank 208 des Zusatzaggregates 200, geleitet werden. In the exemplary embodiment according to FIG. So that the leakage oil does not lead to an overflow of the hydraulic oil tank 108 of the truck-mounted concrete pump 100 during prolonged operation of the hydraulic motor 300, a return line 310 can lead from the hydraulic oil tank 108 to the hydraulic oil tank 208 of the additional unit 200, for example, in order to return the leakage oil to the working circuit attributed. The leakage oil can, for example, flow by gravity from the hydraulic oil tank 108 of the truck-mounted concrete pump 100, which is usually located somewhat higher, to the hydraulic oil tank 208 of the additional unit, or an additional hydraulic pump, not shown, on the truck-mounted concrete pump 100 conveys the leakage oil via the hydraulic line 310 to the hydraulic oil tank 208 of the additional unit 200. A of the hydraulic pumps 102a-d of the hydraulic drive pump system 102 could also be designed to reclaim the leakage oil. The leakage oil of the hydraulic motor 300 can also be routed directly to the hydraulic oil tank 208 of the auxiliary unit 200, without having to go via the hydraulic oil tank 108 of the truck-mounted concrete pump 100.
In der Figur 1 sind sämtliche Anschlüsse an der Autobetonpumpe 100 zur Verbindung mit dem Zusatzaggregat 200 auf der rechten Seite der Autobetonpumpe 100 angeordnet. Diese Anschlüsse können beispielsweise auch auf der linken oder auch auf beiden Seiten der Autobetonpumpe 100 angeordnet sein, um das Zusatzaggregat 200 wahlweise auf beiden Seiten der Autobetonpumpe 100 abstellen und anschließen zu können. Auch eine Anordnung der Anschlüsse an anderen Positionen der Autobetonpumpe 100 ist denkbar. In FIG. 1, all the connections on the truck-mounted concrete pump 100 for connection to the auxiliary unit 200 are arranged on the right-hand side of the truck-mounted concrete pump 100. These connections can also be arranged, for example, on the left or on both sides of the truck-mounted concrete pump 100 in order to be able to park and connect the additional unit 200 on both sides of the truck-mounted concrete pump 100 as desired. An arrangement of the connections at other positions of the truck-mounted concrete pump 100 is also conceivable.
Das Betonpumpsystem 110 der Autobetonpumpe 100 benötigt je nach Ausstattung Druckluft, um beispielsweise die Betonförderleitung abzusperren. Während des Betriebes mit dem Verbrennungsmotor 103 wird diese Druckluft mit einem vom Verbrennungsmotor 103 angetriebenen Kompressor, unter anderem auch für die Versorgung der Bremsanlage des Fahrgestells 130, erzeugt. Weil der Verbrennungsmotor 103 für die Drucklufterzeugung während des elektrischen Antriebs durch das Zusatzaggregat 200 nicht zur Verfügung steht, kann auf der Autobetonpumpe 100 zusätzlich ein von einem Elektromotor oder einer zusätzlichen Hydraulikpumpe angetriebener Kompressor angeordnet sein. Alternativ dazu könnte auch ein Kompressor auf dem Zusatzaggregat 200 angeordnet sein und zusätzlich von dem Elektromotor 203 oder einem separaten Elektromotor angetrieben werden. Bei der Anordnung des Kompressors auf dem Zusatzaggregat 200 ist es erforderlich, einen Druckluftschlauch zwischen dem Zusatzaggregat 200 und der Autobetonpumpe 100 vorzusehen. Die Steuereinheit 220 des Zusatzaggregates 200 ist über den Anschlussstecker 312 mit der Steuereinheit 120 der Autobetonpumpe 100 verbunden. Depending on the equipment, the concrete pump system 110 of the truck-mounted concrete pump 100 requires compressed air, for example to shut off the concrete delivery line. During operation with the internal combustion engine 103, this compressed air is generated with a compressor driven by the internal combustion engine 103, also for supplying the brake system of the chassis 130, among other things. Because the internal combustion engine 103 is not available for generating compressed air during the electric drive by the additional unit 200, a compressor driven by an electric motor or an additional hydraulic pump can also be arranged on the truck-mounted concrete pump 100. As an alternative to this, a compressor could also be arranged on the auxiliary unit 200 and additionally driven by the electric motor 203 or a separate electric motor. When arranging the compressor on the auxiliary unit 200, it is necessary to provide a compressed air hose between the auxiliary unit 200 and the truck-mounted concrete pump 100. The control unit 220 of the additional unit 200 is connected to the control unit 120 of the truck-mounted concrete pump 100 via the connector plug 312 .
Ferner weist das Zusatzaggregat 200 beispielsweise eine Spannungsversorgungsbatterie 225 für Niederspannung, beispielsweise in 24- oder 48-Volt-Technik, für die Steuerungs- und Regelungsaufgaben, auf. Die Spannungsversorgungsbatterie 225 kann beispielsweise von der Leistungsverteileinheit 205 mit elektrischer Energie versorgt werden. Die Spannungsversorgungsbatterie 225 dient insbesondere zur elektrischen Versorgung der Steuereinheit 220 des Zusatzaggregates 200 und zur elektrischen Versorgung der Steuereinheit 120 der Autobetonpumpe 100 über den Versorgungsspannungsanschluss 310. Dadurch, dass beim elektrischen Betrieb der Autobetonpumpe 100 mit dem Zusatzaggregat 200 die Steuereinheit 120 der Autobetonpumpe 100 von der Spannungsversorgungsbatterie 225 mit elektrischer Spannung versorgt wird, ist sichergestellt, dass die Spannungsversorgungsbatterie 125 der Autobetonpumpe 100 nicht überlastet beziehungsweise entladen wird, weil bei abgeschaltetem Verbrennungsmotor 103 die Spannungsversorgungsbatterie 125 der Autobetonpumpe 100 nicht mehr nachgeladen wird. Die Spannungsversorgungsbatterie 225 des Zusatzaggregates 200 verhindert zudem, dass die Steuereinheit 220 des Zusatzaggregates 200 bei Unterbrechung der Baustellenstromversorgung 400 und leerem oder nicht vorhandenem Hochspannungsakkumulator 206 stromlos ist. Furthermore, the additional unit 200 has, for example, a power supply battery 225 for low voltage, for example using 24 or 48 volt technology, for the control and regulation tasks. The power supply battery 225 can be supplied with electrical energy by the power distribution unit 205, for example. The power supply battery 225 serves in particular to supply the electrical power to the control unit 220 of the auxiliary unit 200 and to supply the electrical power to the control unit 120 of the truck-mounted concrete pump 100 via the supply voltage connection 310. Due to the fact that during electrical operation of the truck-mounted concrete pump 100 with the auxiliary unit 200, the control unit 120 of the truck-mounted concrete pump 100 is powered by the Voltage supply battery 225 is supplied with electrical voltage, it is ensured that the voltage supply battery 125 of the truck-mounted concrete pump 100 is not overloaded or discharged because when the internal combustion engine 103 is switched off, the voltage supply battery 125 of the truck-mounted concrete pump 100 is no longer recharged. The power supply battery 225 of the additional unit 200 also prevents the control unit 220 of the additional unit 200 from being de-energized when the construction site power supply 400 is interrupted and the high-voltage battery 206 is empty or non-existent.
Die Steuereinheit 220 kann beispielsweise mit einem Strom-/Leistungssensor218 verbunden sein, der die vom Stromanschluss 207 entnommene elektrische Leistung an der Strom leitung 227 erfasst. Damit lässt sich beispielsweise der Baustellenstromanschluss 400 vor Überlastung schützen und beispielsweise kann die vom Baustellenstromanschluss 400 entnommene elektrische Leistung messtechnisch erfasst werden, beispielsweise um darauf basierend die Kosten für die entnommene elektrische Leistung abzurechnen. The control unit 220 can be connected, for example, to a current/power sensor 218 that detects the electrical power drawn from the power connection 207 on the power line 227 . In this way, for example, the construction site power connection 400 can be protected from overloading and, for example, the electrical power drawn from the construction site power connection 400 can be measured, for example in order to bill the costs for the electrical power drawn based thereon.
Die Steuereinheit 220 kann beispielsweise zudem über weitere Steuerleitungen, beispielsweise einem CAN-Bus-System mit dem Hochspannungsakkumulator 206, der Spannungsversorgungsbatterie 225 und der Leistungsverteileinheit 205 für verschiedenste Steuerungs- und Regelungsaufgaben verbunden sein. The control unit 220 can, for example, also have additional control lines, for example a CAN bus system, with the high-voltage accumulator 206, the power supply battery 225 and the power distribution unit 205 for a wide variety of control and regulation tasks.
Der Elektromotor 203 des Zusatzaggregates 200 kann als Gleichstrom- oder Wechselstrommotor ausgeführt sein. Der Elektromotor 203 kann zudem als Synchron- oder Asynchronmotor und beispielsweise flüssigkeits- oder luftgekühlt ausgeführt sein. The electric motor 203 of the additional unit 200 can be designed as a direct current or alternating current motor. The electric motor 203 can also be designed as a synchronous or asynchronous motor and, for example, be liquid- or air-cooled.
Der Bediener der Autobetonpumpe 100 kann das Betonpumpsystem 110 beim elektrischen Betrieb mit dem Zusatzaggregat 200 wie gewohnt über die Steuereinheit 120, beispielsweise auch mit einer Fernsteuerung, steuern und bedienen. Wenn beispielsweise mittels der Fernsteuerung der Betonverteilermast 115 verfahren wird, könnte von der Hydraulikpumpe 202 des Zusatzaggregates 200 automatisch eine höhere Leistung abgerufen und diese auch zur Verfügung gestellt werden. Entsprechend hat beispielsweise eine vom Bediener über die Fernsteuerung angeforderte Erhöhung der Förderleistung der Zweizylinderkolbenpumpe 114 zur Folge, dass das Fördervolumen der Hydraulikpumpe 202 automatisch erhöht wird. The operator of the truck-mounted concrete pump 100 can control and operate the concrete pump system 110 during electrical operation with the additional unit 200 as usual via the control unit 120, for example also with a remote control. If, for example, the concrete placing boom 115 is moved by means of the remote control, the hydraulic pump 202 of the additional unit 200 could automatically retrieve a higher power and this could also be made available. Accordingly, for example, an increase in the delivery rate of the two-cylinder piston pump 114 requested by the operator via the remote control means that the delivery volume of the hydraulic pump 202 is automatically increased.
Die in diesem Ausführungsbeispiel dargestellte Zweizylinderkolbenpumpe 114 arbeitet mit einem offenen hydraulischen Kreislauf, was insbesondere daran erkennbar ist, dass die Hydraulikpumpen 102a1 , 102a2 das Hydrauliköl nur in eine Richtung fördern. Eine Zweizylinderkolbenpumpe 114 kann aber beispielsweise auch in einem geschlossenem Hydraulikkreislauf mit einer Reversierpumpe, die abwechselnd in beide Richtungen fördert, und einer Speisepumpe betrieben werden. The two-cylinder piston pump 114 shown in this exemplary embodiment works with an open hydraulic circuit, which can be seen in particular from the fact that the hydraulic pumps 102a1, 102a2 only deliver the hydraulic oil in one direction. However, a two-cylinder piston pump 114 can, for example, also be operated in a closed hydraulic circuit with a reversible pump, which delivers alternately in both directions, and a feed pump.
Wie weiter oben schon angedeutet, kann das Zusatzaggregat 200 zudem dazu ausgebildet sein, das Hydraulikantriebspumpsystem 102 der Autobetonpumpe 100 parallel zum Verbrennungsmotorantrieb der Autobetonpumpe 100 anzutreiben. Das heißt beispielsweise, dass das Zusatzaggregat 200 das Hydraulikantriebspumpsystem 102 bei geringem Leistungsbedarf des Betonpumpsystems 110, zum Beispiel beim Abstützen der Autobetonpumpe 100 und beim Ausfalten des Betonverteilermastes 115 alleine antreibt. Sobald die Zweizylinderkolbenpumpe 114 in Betrieb genommen oder eine hohe Förderleistung der Zweizylinderkolbenpumpe 114 gefordert wird, kann der Verbrennungsmotor 103 zusätzlich zum Zusatzaggregat 200 in Betrieb genommen werden. As already indicated above, the additional unit 200 can also be designed to drive the hydraulic drive pump system 102 of the truck-mounted concrete pump 100 in parallel with the internal combustion engine drive of the truck-mounted concrete pump 100 . This means, for example, that the auxiliary unit 200 alone drives the hydraulic drive pump system 102 when the concrete pump system 110 requires little power, for example when supporting the truck-mounted concrete pump 100 and when unfolding the concrete placing boom 115 . Once the two-cylinder piston pump 114 is put into operation or a high Flow rate of the two-cylinder piston pump 114 is required, the internal combustion engine 103 can be put into operation in addition to the auxiliary unit 200 .
Die Figur 2 zeigt den technischen Aufbau des erfindungsgemäßen Systems zum elektrischen Antrieb einer Autobetonpumpe 100 für ein erstes Ausführungsbeispiels in detaillierter Form. In den Figuren 3 bis 7 sind weitere alternative Ausführungsbeispiele des erfindungsgemäßen Systems zum elektrischen Antrieb einer Autobetonpumpe 100 aus Gründen der Übersichtlichkeit vereinfacht dargestellt und werden im Folgenden beschrieben. Die in Figur 2 detaillierter dargestellten Elemente sind analog auf die Ausführungsbeispiele gemäß den Figuren 3 bis 7 übertragbar. Die alternativen Ausführungsformen der Figuren 3 bis 7 betreffen insbesondere unterschiedliche Anordnungen des Hydraulikmotors 300, der das Hydraulikantriebspumpsystem 102 der Autobetonpumpe 100 antreibt. FIG. 2 shows the technical structure of the system according to the invention for electrically driving a truck-mounted concrete pump 100 for a first exemplary embodiment in a detailed form. In FIGS. 3 to 7, further alternative exemplary embodiments of the system according to the invention for electrically driving a truck-mounted concrete pump 100 are shown in simplified form for reasons of clarity and are described below. The elements shown in more detail in FIG. 2 can be transferred analogously to the exemplary embodiments according to FIGS. The alternative embodiments of FIGS. 3 to 7 relate in particular to different arrangements of the hydraulic motor 300 which drives the hydraulic drive pumping system 102 of the truck-mounted concrete pump 100. FIG.
Die Figur 3 zeigt beispielhaft die Anordnung des Hydraulikmotors 300 zwischen den Hydraulikpumpen 102a1 und 102a2, die die Zweizylinderkolbenpumpe 114 antreiben und den Hydraulikpumpen 102b, 102c und 102d, die den Verteilermast 115, die Abstützung 113, das Betonumschaltventil 112 und das Rührwerk 111 antreiben. Der Hydraulikmotor 300 könnte ohne Weiteres auch an einer anderen Stelle zwischen den Hydraulikpumpen 102a bis 102f des Hydraulikantriebspumpsystems 102 angeordnet sein. Wie im Stand der Technik wird das Hydraulikantriebspumpsystems 102 beim Betrieb mit dem Verbrennungsmotor 103 beispielsweise über den Nebenabtrieb 104 angetrieben. Figure 3 shows an example of the arrangement of the hydraulic motor 300 between the hydraulic pumps 102a1 and 102a2, which drive the two-cylinder piston pump 114 and the hydraulic pumps 102b, 102c and 102d, which drive the placing boom 115, the support 113, the concrete switching valve 112 and the agitator 111. The hydraulic motor 300 could easily be located elsewhere between the hydraulic pumps 102a-102f of the hydraulic drive pumping system 102. As in the prior art, when operated with the internal combustion engine 103, the hydraulic drive pump system 102 is driven via the power take-off 104, for example.
Die Figur 4 zeigt beispielhaft eine Variante des erfindungsgemäßen Systems, bei der der Hydraulikmotor 300 auf der Autobetonpumpe 100 über ein Umlenkgetriebe 302 zwischen die Hydraulikpumpen 102c und 102b eingekoppelt ist. Der Vorteil dieser Variante besteht beispielsweise darin, dass die Breite des Umlenkgetriebes 302 geringer ist als die Breite des Hydraulikmotors 300, sodass die Verlängerung des Hydraulikantriebspumpsystems 102, wie es in der Figur 3 dargestellt ist, insgesamt etwas geringer ausfällt. Damit fallen auch die Veränderungen an der Autobetonpumpe 100, bei der der verfügbare Einbauraum für das Hydraulikantriebspumpsystem 102 unter Umständen begrenzt ist, geringer aus. Das Umlenkgetriebe 302 kann beispielsweise auch zwischen zwei anderen Hydraulikpumpen 102a - 102d oder zwischen dem Nebenabtrieb 104 und der Hydraulikpumpe 102a oder am Ende des Hydraulikantriebspumpsystems 102 an der Ausgangsseite der Hydraulikpumpe 102d angeordnet sein. FIG. 4 shows an example of a variant of the system according to the invention, in which the hydraulic motor 300 on the truck-mounted concrete pump 100 is coupled between the hydraulic pumps 102c and 102b via a deflection gear 302. The advantage of this variant is, for example, that the width of the deflection gear 302 is less than the width of the hydraulic motor 300, so that the lengthening of the hydraulic drive pump system 102, as shown in FIG. 3, turns out to be somewhat smaller overall. This also eliminates the changes to the truck-mounted concrete pump 100, in which the available installation space for the hydraulic drive pump system 102 may be limited, less. The deflection gear 302 can also be arranged, for example, between two other hydraulic pumps 102a-102d or between the power take-off 104 and the hydraulic pump 102a or at the end of the hydraulic drive pump system 102 on the output side of the hydraulic pump 102d.
In der Figur 5 ist beispielhaft eine Variante dargestellt, bei der der Hydraulikmotor 300 über ein Verteilerschaltgetriebe 303 mit dem Hydraulikantriebspumpsystem 102 verbunden ist. Das Verteilerschaltgetriebe 303 ist in dieser beispielhaften Variante so aufgebaut, dass der Hydraulikmotor 300 unterhalb der Hydraulikpumpe 102a angeordnet und über den ersten Getriebeeingang 303b an das Verteilerschaltgetriebe 303 angekoppelt ist. Der Nebenabtrieb 104 ist über einen zweiten Getriebeeingang 303c an das Verteilerschaltgetriebe 303 angekoppelt und der Getriebeausgang 303a ist an die Hydraulikpumpe 102a des Hydraulikantriebspumpsystems 102 gekoppelt. Der Unterschied zwischen dem Umlenkgetriebe 302 gemäß der Figur 2 und dem Verteilerschaltgetriebe 303 besteht insbesondere darin, dass das Verteilerschaltgetriebe 303 beispielsweise auch eine oder mehrere lösbare Kupplungen zum An- und Abkoppeln der Getriebeeingänge 303b und 303c aufweisen kann, sodass beispielsweise auf die im Zusammenhang mit der Figur 2 dargestellte separate Kupplung 301 verzichtet werden kann. Ferner kann das Verteilerschaltgetriebe 303 Getriebeschaltstufen aufweisen, so dass nur einer der Getriebeeingänge 303b oder 303c mit dem Getriebeausgang 303a gekoppelt ist. Das Verteilerschaltgetriebe 303 kann beispielsweise den alleinigen Antrieb des Hydraulikantriebspumpsystems 102 durch den Verbrennungsmotor 103 oder den Hydraulikmotor 300 oder auch den gemeinsamen Antrieb mit beiden Motoren 103 und 300 erlauben. A variant is shown in FIG. 5 by way of example, in which the hydraulic motor 300 is connected to the hydraulic drive pump system 102 via a transfer gearbox 303 . In this exemplary variant, the transfer case 303 is constructed in such a way that the hydraulic motor 300 is arranged below the hydraulic pump 102a and is coupled to the transfer case 303 via the first transmission input 303b. The power take-off 104 is coupled to the transfer gearbox 303 via a second transmission input 303c and the transmission output 303a is coupled to the hydraulic pump 102a of the hydraulic drive pump system 102 . The difference between the deflection gear 302 according to Figure 2 and the transfer case 303 is, in particular, that the transfer case 303 can also have one or more detachable clutches for coupling and decoupling the transmission inputs 303b and 303c, so that, for example, the Figure 2 shown separate clutch 301 can be omitted. Furthermore, the transfer case 303 can have gear shift stages, so that only one of the transmission inputs 303b or 303c is coupled to the transmission output 303a. The transfer case 303 can, for example, allow the hydraulic drive pump system 102 to be driven solely by the internal combustion engine 103 or the hydraulic motor 300 or also to be driven jointly by both motors 103 and 300 .
Das Verteilerschaltgetriebe 303 könnte beispielsweise auch so aufgebaut sein, dass der Hydraulikmotor 300 am Getriebeeingang 303c angeordnet ist und der Nebenabtrieb 104 an das Verteilerschaltgetriebe 303 über einen weiteren Getriebeeingang angekoppelt ist, der in der Figur 4 unterhalb des Getriebeeinganges 303c angeordnet ist. Der Vorteil einer derartigen Anordnung bestände beispielsweise darin, dass der Hydraulikmotor 300 über eine Welle durch das Verteilerschaltgetriebe 303 direkt mit dem Hydraulikantriebspumpsystem 102 gekoppelt ist, sodass kaum Verluste beim elektrischen Antrieb des Hydraulikantriebspumpsystems 102 durch das Verteilerschaltgetriebe 303 auftreten. The transfer case 303 could, for example, also be constructed in such a way that the hydraulic motor 300 is arranged at the transmission input 303c and the power take-off 104 is coupled to the transfer case 303 via a further transmission input, which is arranged below the transmission input 303c in FIG. The advantage of such an arrangement would be, for example, that the hydraulic motor 300 is coupled directly to the hydraulic drive pump system 102 via a shaft through the transfer gearbox 303, so that there are hardly any losses in the electrical drive of the hydraulic drive pumping system 102 through the transfer case 303 occur.
Das in der Figur 5 dargestellte Verteilerschaltgetriebe 303 kann, wie das in Verbindung mit der Figur 4 beschriebene Umlenkgetriebe 302, an einer Vielzahl weiterer Positionen im und am Hydraulikantriebspumpsystem 102 angeordnet sein und entsprechend angepasste Getriebeein- und -ausgänge aufweisen. Like the deflection gear 302 described in connection with FIG. 4, the transfer case 303 shown in FIG. 5 can be arranged at a large number of other positions in and on the hydraulic drive pump system 102 and have correspondingly adapted transmission inputs and outputs.
Die Figuren 6a und 6b zeigen eine weitere Ausführungsform, bei der eine der Hydraulikpumpen 102a bis 102d eine Einheit mit dem Hydraulikmotor 300 bildet. Insbesondere sind für diese Ausführungsform die Hydraulikpumpen 102a1 und 102a2 dazu geeignet, eine Einheit mit dem Hydraulikmotor 300 zu bilden. In der beispielhaften Darstellung der Figuren 6a und 6b bildet die Hydraulikpumpe 102a2 eine Einheit mit dem Hydraulikmotor 300. Wie weiter oben schon erläutert, treiben die zwei Hydraulikpumpen 102a und 102b gemeinsam die Zweizylinderkolbenpumpe 114 an, insbesondere wenn die Autobetonpumpe 100 vom Verbrennungsmotor 103 konventionell angetrieben wird, weil der Leistungsbedarf der Zweizylinderkolbenpumpe 114 sehr hoch sein kann und der Verbrennungsmotor 103 diese hohe Leistung, beispielsweise eine Leistung zwischen 200 und 300 kW, auch zur Verfügung stellen kann. Die elektrische Antriebsleistung des Elektromotors 203 des Zusatzaggregates 200 und damit auch die Leistung der Hydraulikpumpe 202 des Zusatzaggregates 200 und des Hydraulikmotors 300 fallen aufgrund der begrenzten Leistung des Baustellenstromanschlusses 400 unter Umständen geringer aus, beispielsweise im Bereich von 80 bis 200 kW. Das bedeutet, dass beim elektrischen Betrieb der Autobetonpumpe 100 durch das Zusatzaggregat 200 auf die Antriebsleistung einer der Hydraulikpumpen 102a oder 102b verzichtet werden kann und diese stattdessen die Funktion des Hydraulikmotors 300 übernimmt. Dafür ist es erforderlich, die Betriebsart der Hydraulikpumpe 102a umzustellen, indem zum Beispiel bei einer als Axialkolbenpumpe in Schrägscheibenbauweise ausgebildeten Hydraulikpumpe 102a die Schrägscheibe entsprechend der Betriebsart geschwenkt wird, sodass diese dann als Hydraulikmotor 300 betrieben wird. In der Figur 6a ist der Fall dargestellt, in dem der Verbrennungsmotor 103 das gesamte Hydraulikantriebspumpsystem 102 antreibt. Das Hydraulik-Wegeventil 313 ist so geschaltet, dass die Hydraulikpumpe 102a das Hydrauliköl zur Zweizylinderkolbenpumpe 214 fördert, um diese gemeinsam mit der Hydraulikpumpe 102b anzutreiben. Die kombinierte Hydraulikpumpe/Hydraulikmotor 300/102a2 wird als Hydraulikpumpe 102a2 eingesetzt. Die in diesem Ausführungsbeispiel in die Hydraulikleitungen 305a1 und 305a2 aufgeteilte Hydraulikleitung 305a zu der Hydraulikpumpe 202 des Zusatzaggregates 200 ist durch das Wegeventil 313 gesperrt. Üblicherweise ist das Zusatzaggregat 200 in dieser Betriebsart auch nicht mit der Autobetonpumpe 100 gekoppelt. In dieser Betriebsart saugt die Hydraulikpumpe 102a2 das für den hydraulischen Antrieb benötigte Hydrauliköl über die Hydraulikleitung 310 aus dem Hydrauliköltank 108 an. FIGS. 6a and 6b show a further embodiment in which one of the hydraulic pumps 102a to 102d forms a unit with the hydraulic motor 300. In particular, for this embodiment, the hydraulic pumps 102a1 and 102a2 are adapted to be integrated with the hydraulic motor 300. FIG. In the exemplary representation of Figures 6a and 6b, the hydraulic pump 102a2 forms a unit with the hydraulic motor 300. As already explained above, the two hydraulic pumps 102a and 102b jointly drive the two-cylinder piston pump 114, particularly if the truck-mounted concrete pump 100 is conventionally driven by the internal combustion engine 103 , because the power requirement of the two-cylinder piston pump 114 can be very high and the internal combustion engine 103 can also provide this high power, for example between 200 and 300 kW. The electrical drive power of the electric motor 203 of the additional unit 200 and thus also the power of the hydraulic pump 202 of the additional unit 200 and of the hydraulic motor 300 may be lower due to the limited power of the construction site power connection 400, for example in the range of 80 to 200 kW. This means that when the truck-mounted concrete pump 100 is operated electrically by the additional unit 200, the drive power of one of the hydraulic pumps 102a or 102b can be dispensed with and this takes over the function of the hydraulic motor 300 instead. For this it is necessary to switch the operating mode of the hydraulic pump 102a, for example in the case of a hydraulic pump 102a designed as an axial piston pump with a swash plate design, the swash plate is pivoted according to the operating mode so that it is then operated as a hydraulic motor 300. The case in which the internal combustion engine 103 drives the entire hydraulic drive pump system 102 is illustrated in FIG. 6a. The hydraulic directional control valve 313 is switched in such a way that the hydraulic pump 102a delivers the hydraulic oil to the two-cylinder piston pump 214 in order to drive it together with the hydraulic pump 102b. The combined hydraulic pump/hydraulic motor 300/102a2 is used as the hydraulic pump 102a2. The hydraulic line 305a to the hydraulic pump 202 of the additional unit 200, which is divided into the hydraulic lines 305a1 and 305a2 in this exemplary embodiment, is blocked by the directional control valve 313. Usually, the additional unit 200 is also not coupled to the truck-mounted concrete pump 100 in this mode of operation. In this operating mode, the hydraulic pump 102a2 draws in the hydraulic oil required for the hydraulic drive from the hydraulic oil tank 108 via the hydraulic line 310 .
In der Figur 6b ist der Fall dargestellt, in dem die Autobetonpumpe 100 durch das Zusatzaggregat 200 elektrisch angetrieben wird. Die kombinierte Hydraulikpumpe/Hydraulikmotor 300/102a2 wird als Hydraulikmotor 300 eingesetzt. Das Wegeventil 313 ist so geschaltet, dass die Hydraulikleitung 305a von der kombinierten Hydraulikpumpe/Hydraulikmotor 102a2/300 zu der Zweizylinderkolbenpumpe 114 unterbrochen ist und die Hydraulikpumpe 102a1 die Zweizylinderkolbenpumpe 114 alleine antreibt. Das Wegeventil 313 gibt jetzt die Hydraulikleitung 305a1 von der Hydraulikpumpe 202 des Zusatzaggregates 200 zum Hydraulikmotor 300 der Autobetonpumpe 100 frei, sodass die Hydraulikpumpe 202 des Zusatzaggregates 200 den Hydraulikmotor 300 der Autobetonpumpe 100 antreibt. FIG. 6b shows the case in which the truck-mounted concrete pump 100 is driven electrically by the auxiliary unit 200. The combined hydraulic pump/hydraulic motor 300/102a2 is used as the hydraulic motor 300. The directional control valve 313 is switched in such a way that the hydraulic line 305a from the combined hydraulic pump/hydraulic motor 102a2/300 to the two-cylinder piston pump 114 is interrupted and the hydraulic pump 102a1 drives the two-cylinder piston pump 114 alone. The directional valve 313 now releases the hydraulic line 305a1 from the hydraulic pump 202 of the auxiliary unit 200 to the hydraulic motor 300 of the truck-mounted concrete pump 100, so that the hydraulic pump 202 of the auxiliary unit 200 drives the hydraulic motor 300 of the truck-mounted concrete pump 100.
In der Figur 7 ist ein weiteres Ausführungsbeispiel dargestellt, bei dem der Hydraulikmotor 300, wie schon in Verbindung mit der Figur 2 erläutert, das Hydraulikantriebspumpsystem 102 über das Zusatzaggregat 200 elektrisch antreibt. Der Antrieb des Hydraulikantriebspumpsystems 102 durch den Verbrennungsmotor 103 erfolgt nicht wie in den vorhergehenden Ausführungsbeispielen über den Nebenabtrieb 104 des Verbrennungsmotors 103, sondern über die Kardanwelle 106, über die im Fährbetrieb der Autobetonpumpe 100 die Antriebsräder 131 über das Schaltgetriebe 105 durch den Verbrennungsmotor 103 der Autobetonpumpe 100 angetrieben werden. Die Kardanwelle 106 ist durch ein Verteilerschaltgetriebe 303 unterbrochen, sodass beim Pumpbetrieb durch den Verbrennungsmotor 103 die Teil-Kardanwelle 106a über das Verteilerschaltgetriebe 303 das Hydraulikantriebspumpsystem 102 antreibt. Vom Verteilerschaltgetriebe 303 führt die Teil-Kardanwelle 106b zu den Antriebsrädern 131. Im Fährbetrieb sind die Teilkardanwellen 106a und 106b durch das Verteilerschaltgetriebe 303 für den Antrieb der Antriebsräder 131 miteinander gekoppelt. Das Verteilerschaltgetriebe 303 kann für den Antrieb des Hydraulikantriebspumpsystems 102 durch den Verbrennungsmotor 103 oder das Zusatzaggregat 200 entsprechend umgeschaltet werden. In diesen beiden Fällen wird die Kardanwelle 106 von den Antriebsrädern 131 durch das Verteilerschaltgetriebe 303 abgekoppelt. FIG. 7 shows a further exemplary embodiment in which the hydraulic motor 300, as already explained in connection with FIG. The hydraulic drive pump system 102 is not driven by the internal combustion engine 103, as in the previous exemplary embodiments, via the power take-off 104 of the internal combustion engine 103, but via the cardan shaft 106, via the drive wheels 131 in ferry mode of the truck-mounted concrete pump 100 via the manual transmission 105 by the internal combustion engine 103 of the truck-mounted concrete pump 100 can be driven. The Cardan shaft 106 is interrupted by a transfer case 303, so that during pumping operation by internal combustion engine 103, partial cardan shaft 106a drives hydraulic drive pump system 102 via transfer case 303. The partial cardan shaft 106b leads from the transfer case 303 to the drive wheels 131. In ferry operation, the part cardan shafts 106a and 106b are coupled to one another by the transfer case 303 for driving the drive wheels 131. The transfer case 303 can be switched to drive the hydraulic drive pump system 102 by the engine 103 or the auxiliary unit 200 as appropriate. In both of these cases, the cardan shaft 106 is decoupled from the drive wheels 131 by the transfer gearbox 303 .
In dem Ausführungsbeispiel nach Figur 7 ist der Hydraulikmotor 300 an der gleichen Seite wie die Kardanwelle 106a an dem Verteilerschaltgetriebe 303 angeordnet. Selbstverständlich kann der Hydraulikmotor 300 auch anders, zum Beispiel auch wie beispielhaft in den Figuren 2 bis 5 dargestellt, angeordnet sein. Das Ausführungsbeispiel der Figur 7 kann ohne weiteres auch mit der kombinierten Hydraulikpumpe/Hydraulikmotor 300/102a2 wie im Ausführungsbeispiel nach Figur 6 kombiniert werden. In the exemplary embodiment according to FIG. 7, the hydraulic motor 300 is arranged on the transfer gearbox 303 on the same side as the cardan shaft 106a. Of course, the hydraulic motor 300 can also be arranged differently, for example as shown in FIGS. 2 to 5 as an example. The exemplary embodiment in FIG. 7 can also be easily combined with the combined hydraulic pump/hydraulic motor 300/102a2 as in the exemplary embodiment according to FIG.
Die Erfindung wurde hier aus Gründen der Übersichtlichkeit so beschrieben, dass auf dem Zusatzaggregat 200 ein Elektromotor 203 angeordnet ist, der eine Hydraulikpumpe 202 antreibt. Selbstverständlich könnten im Sinne der Erfindung auf dem Zusatzaggregat 200 auch mehrere, zum Beispiel in Serie oder in Reihe angeordnete Elektromotoren 203 angeordnet sein, die eine oder mehrere Hydraulikpumpen 202 antreiben. Ebenso könnten im Sinne der Erfindung auf der Autobetonpumpe 100 auch mehre Hydraulikmotoren 300 angeordnet sein, die von einem oder auch mehreren Zusatzaggregaten 200 im Sinne der Erfindung angetrieben werden. Bezuqszeichenliste For reasons of clarity, the invention has been described here in such a way that an electric motor 203 which drives a hydraulic pump 202 is arranged on the auxiliary unit 200 . Of course, within the meaning of the invention, a plurality of electric motors 203, for example arranged in series or in series, could also be arranged on the auxiliary unit 200, which drive one or more hydraulic pumps 202. Likewise, within the meaning of the invention, several hydraulic motors 300 could also be arranged on the truck-mounted concrete pump 100, which are driven by one or more additional units 200 within the meaning of the invention. Reference character list
100 Autobetonpumpe 100 truck-mounted concrete pump
102 Hydraulikantriebspumpsystem (Autobetonpumpe)102 hydraulic drive pump system (truck mounted concrete pump)
102a-d Hydraulikpumpen 102a-d hydraulic pumps
103 Verbrennungsmotor 103 internal combustion engine
104 Nebenabtrieb 104 PTO
105 Schaltgetriebe 105 manual transmission
106 Kardanwelle 106 cardan shaft
108 Hydrauliköltank Autobetonpumpe 108 hydraulic oil tank truck-mounted concrete pump
110 Betonpumpsystem 110 concrete pumping system
111 Rührwerk 111 agitator
112 Betonumschaltventil 112 concrete changeover valve
113 Abstützung 113 support
114 Zweizylinderkolbenpumpe 114 two-cylinder piston pump
115 Betonverteilermast 115 concrete placing boom
116 Einfülltrichter 116 hopper
120 Steuereinheit Autobetonpumpe 120 truck-mounted concrete pump control unit
121a-d Hydraulikversorgungsleitungen Betonpumpsystem121a-d hydraulic supply lines concrete pump system
122a-d Hydraulikrücklaufleitungen Betonpumpsystem 25 Spannungsversorgungsbatterie Autobetonpumpe30 LKW-Fahrgestell 31 Fahrantriebsräder 122a-d hydraulic return lines concrete pumping system 25 Power supply battery Truck-mounted concrete pump 30 Truck chassis 31 Travel drive wheels
200 Zusatzaggregat 202 Hydraulikpumpe Zusatzaggregat 200 Auxiliary unit 202 Hydraulic pump auxiliary unit
203 Elektromotor 203 electric motor
205 Leistungsverteileinheit 205 power distribution unit
206 Akkumulator Hochspannung 206 high voltage accumulator
207 Stromanschluss 207 power connector
208 Hydrauliköltank Zusatzaggregat 208 hydraulic oil tank auxiliary unit
209a Hydraulikversorgungsleitung 209a hydraulic supply line
209b Hydraulikrücklaufleitung 209b hydraulic return line
210 Leckölrückführung 210 leakage oil return
220 Steuereinheit Zusatzaggregat 221 Spannungsversorgungsleitung 220 Auxiliary unit control unit 221 Power supply line
222 Steuerungsleitung 222 control line
225 Versorgungsbatterie Zusatzaggregat 225 supply battery auxiliary unit
226 Strom leitung 226 power line
300 Hydraulikmotor Kupplung Umlenkgetriebe Verteilerschaltgetriebe a Hydraulik-Schnellkupplung Versorgung b Hydraulik-Schnellkupplung Rücklauf a, b Hydraulikleitungen Antriebswelle Leckölablauf Hydraulikmotor Leckölrückführung Anschlussstecker Spannungsversorgung Anschlussstecker Steuerung Hydraulik-Wegeventil Baustellenstromverteiler 300 hydraulic motor Coupling Deflection gear Transfer case a Hydraulic quick coupling supply b Hydraulic quick coupling return a, b Hydraulic lines drive shaft Leakage oil drain Hydraulic motor Leakage oil return Connection plug for voltage supply Connection plug for control of hydraulic directional valve Construction site power distributor
- Patentansprüche - - patent claims -

Claims

Patentansprüche patent claims
1. System umfassend eine Autobetonpumpe (100) und ein Zusatzaggregat (200), wobei die Autobetonpumpe (100) ein hydraulisch angetriebenes Betonpumpsystem (110) zur Förderung von Beton, ein Hydraulikantriebspumpsystem (102) und einen Verbrennungsmotor (103) aufweist, wobei der Verbrennungsmotor (103) der Autobetonpumpe (100) zum Antrieb des Hydraulikantriebspumpsystems (102) und das Hydraulikantriebspumpsystem (102) zum Antrieb des Betonpumpsystems (110) ausgebildet sind, dadurch gekennzeichnet, dass das Zusatzaggregat (200) zum elektrischen Antrieb der Autobetonpumpe (100) vorgesehen ist und eine Hydraulikpumpe (202) und einen Elektromotor (203) aufweist, wobei der Elektromotor (203) zum Antrieb der Hydraulikpumpe (202) des Zusatzaggregates (200) ausgebildet ist, wobei die Hydraulikpumpe (202) des Zusatzaggregates (200) für den Antrieb des Hydraulikantriebspumpsystems (102) der Autobetonpumpe (100) mit der Autobetonpumpe (100) reversibel verbindbar ausgebildet ist. 1. System comprising a truck-mounted concrete pump (100) and an auxiliary unit (200), the truck-mounted concrete pump (100) having a hydraulically driven concrete pump system (110) for pumping concrete, a hydraulic drive pump system (102) and an internal combustion engine (103), the internal combustion engine (103) of the truck-mounted concrete pump (100) for driving the hydraulic drive pump system (102) and the hydraulic drive pump system (102) for driving the concrete pump system (110), characterized in that the additional unit (200) is provided for electrically driving the truck-mounted concrete pump (100). and a hydraulic pump (202) and an electric motor (203), the electric motor (203) being designed to drive the hydraulic pump (202) of the additional unit (200), the hydraulic pump (202) of the additional unit (200) being designed to drive the Hydraulic drive pump system (102) of the truck-mounted concrete pump (100) is designed to be reversibly connectable to the truck-mounted concrete pump (100).
2. System nach Anspruch 1 , dadurch gekennzeichnet, dass die von dem Zusatzaggregat (200) antreibbare Autobetonpumpe (100) einen Hydraulikmotor (300) zum zusätzlichen Antrieb des Hydraulikantriebspumpsystem (102) der Autobetonpumpe (100) aufweist, wobei die Hydraulikpumpe (202) des Zusatzaggregates (200) mit dem Hydraulikmotor (300) der Autobetonpumpe (100) für den Antrieb des Hydraulikantriebspumpsystems (102) der Autobetonpumpe (100) über Hydraulikölleitungen (209a, 209b, 305a, 305b) reversibel verbindbar ist. 2. System according to claim 1, characterized in that the truck-mounted concrete pump (100) that can be driven by the additional unit (200) has a hydraulic motor (300) for the additional drive of the hydraulic drive pump system (102) of the truck-mounted concrete pump (100), the hydraulic pump (202) of the Additional unit (200) can be reversibly connected to the hydraulic motor (300) of the truck-mounted concrete pump (100) for driving the hydraulic drive pump system (102) of the truck-mounted concrete pump (100) via hydraulic oil lines (209a, 209b, 305a, 305b).
3. System nach Anspruch 1 oder 2, dadurch gekennzeichnet, dass das Zusatzaggregat (200) einen Hydrauliköltank (208) zur Aufnahme des von dem Hydraulikmotor (300) der Autobetonpumpe (100) zurückgeführten Hydrauliköls aufweist. 3. System according to claim 1 or 2, characterized in that the additional unit (200) has a hydraulic oil tank (208) for receiving the hydraulic oil returned from the hydraulic motor (300) of the truck-mounted concrete pump (100).
4. System nach Anspruch 3, dadurch gekennzeichnet, dass die Hydraulikpumpe (202) des Zusatzaggregates (200) dazu ausgebildet ist, Hydrauliköl aus dem Hydrauliköltank (208) des Zusatzaggregates (200) anzusaugen. 4. System according to claim 3, characterized in that the hydraulic pump (202) of the additional unit (200) is designed to suck hydraulic oil from the hydraulic oil tank (208) of the additional unit (200).
5. Autobetonpumpe (100), aufweisend ein hydraulisch angetriebenes Betonpumpsystem (110) zur Förderung von Beton, ein Hydraulikantriebspumpsystem (102) und einen Verbrennungsmotor (103), wobei der Verbrennungsmotor (103) zum Antrieb des Hydraulikantriebspumpsystem (102) ausgebildet ist und das Hydraulikantriebspumpsystem (102) zum Antrieb des Betonpumpsystems (110) ausgebildet ist, dadurch gekennzeichnet, dass die Autobetonpumpe (100) einen Hydraulikmotor (300) aufweist, wobei der Hydraulikmotor (300) zusätzlich zum Antrieb des Hydraulikantriebspumpsystems (102) ausgebildet ist. 5. Truck-mounted concrete pump (100), comprising a hydraulically driven concrete pump system (110) for pumping concrete, a hydraulic drive pump system (102) and an internal combustion engine (103), the internal combustion engine (103) being designed to drive the hydraulic drive pump system (102) and the hydraulic drive pump system (102) is designed to drive the concrete pump system (110), characterized in that the truck-mounted concrete pump (100) has a hydraulic motor (300), the hydraulic motor (300) being additionally designed to drive the hydraulic drive pump system (102).
6. Autobetonpumpe (100) nach Anspruch 5, dadurch gekennzeichnet, dass der Hydraulikmotor (300) der Autobetonpumpe (100) mit einer von einem Elektromotor (203) angetriebenen Hydraulikpumpe (202) eines Zusatzaggregates (200) für den Antrieb des Hydraulikantriebspumpsystems (102) reversibel verbindbar ausgebildet ist. 6. Truck-mounted concrete pump (100) according to claim 5, characterized in that the hydraulic motor (300) of the truck-mounted concrete pump (100) is connected to a hydraulic pump (202) driven by an electric motor (203) of an auxiliary unit (200) for driving the hydraulic drive pump system (102). is designed to be reversibly connectable.
7. Autobetonpumpe (100) nach Anspruch 5 oder 6, dadurch gekennzeichnet, dass das Hydraulikantriebspumpsystem (102) der Autobetonpumpe (100) mehrere mechanisch miteinander gekoppelte Hydraulikpumpen (102a1 , 102a2, 102b, 102c, 102d) aufweist, wobei der Hydraulikmotor (300) zum Antrieb der miteinander gekoppelten Hydraulikpumpen (102a1 , 102a2, 102b, 102c, 102d) ausgebildet ist. 7. Truck-mounted concrete pump (100) according to Claim 5 or 6, characterized in that the hydraulic drive pump system (102) of the truck-mounted concrete pump (100) has a plurality of hydraulic pumps (102a1, 102a2, 102b, 102c, 102d) mechanically coupled to one another, the hydraulic motor (300) is designed to drive the hydraulic pumps (102a1, 102a2, 102b, 102c, 102d) that are coupled to one another.
8. Autobetonpumpe (100) nach Anspruch 7, dadurch gekennzeichnet, dass der Hydraulikmotor (300) zwischen dem Verbrennungsmotor (103) und den miteinander gekoppelten Hydraulikpumpen (102a1 , 102a2, 102b, 102c, 102d) des Hydraulikantriebspumpsystems (102) angeordnet ist. 8. Truck-mounted concrete pump (100) according to claim 7, characterized in that the hydraulic motor (300) is arranged between the internal combustion engine (103) and the hydraulic pumps (102a1, 102a2, 102b, 102c, 102d) of the hydraulic drive pump system (102) which are coupled to one another.
9. Autobetonpumpe (100) nach Anspruch 7 oder 8, dadurch gekennzeichnet, dass zwischen dem Verbrennungsmotor (103) und dem Hydraulikmotor (300) eine Kupplung (301 ) angeordnet ist, die zur An- und Abkupplung des Hydraulikmotors (300) vom Verbrennungsmotors (103) ausgebildet ist. 9. Truck-mounted concrete pump (100) according to claim 7 or 8, characterized in that a clutch (301) is arranged between the internal combustion engine (103) and the hydraulic motor (300) for coupling and uncoupling the hydraulic motor (300) from the internal combustion engine ( 103) is formed.
10. Autobetonpumpe (100) nach Anspruch 7 oder 9, dadurch gekennzeichnet, dass das Hydraulikantriebspumpsystem (102) der Autobetonpumpe (100) mehrere in Reihe angeordnete und mechanisch mit einander gekoppelte Hydraulikpumpen (102a1 , 102a2, 102b, 102c, 102d) aufweist und der Hydraulikmotor (300) zwischen zwei der Hydraulikpumpen (102a1 , 102a2, 102b, 102c, 102d) des Hydraulikantriebspumpsystems (102) angeordnet ist. 10. Truck-mounted concrete pump (100) according to Claim 7 or 9, characterized in that the hydraulic drive pump system (102) of the truck-mounted concrete pump (100) has a plurality of hydraulic pumps (102a1, 102a2, 102b, 102c, 102d) arranged in series and mechanically coupled to one another and the Hydraulic motor (300) between two of the hydraulic pumps (102a1, 102a2, 102b, 102c, 102d) of the hydraulic drive pump system (102) is arranged.
11. Autobetonpumpe (100) nach Anspruch 10, dadurch gekennzeichnet, dass der Hydraulikmotor (300) über ein Umlenkgetriebe (302) zwischen zwei Hydraulikpumpen (102a1 , 102a2, 102b, 102c, 102d) angeordnet ist. 11. Truck-mounted concrete pump (100) according to claim 10, characterized in that the hydraulic motor (300) is arranged via a deflection gear (302) between two hydraulic pumps (102a1, 102a2, 102b, 102c, 102d).
12. Autobetonpumpe (100) nach Anspruch 8, dadurch gekennzeichnet, dass zwischen dem Hydraulikmotor (300) und dem Hydraulikantriebspumpsystem (102) ein Verteilerschaltgetriebe (303) zur Ankopplung des Hydraulikmotors (300) an das Hydraulikantriebspumpsystem (102) angeordnet ist. 12. Truck-mounted concrete pump (100) according to claim 8, characterized in that a transfer gearbox (303) for coupling the hydraulic motor (300) to the hydraulic drive pump system (102) is arranged between the hydraulic motor (300) and the hydraulic drive pump system (102).
13. Autobetonpumpe (100) nach Anspruch 5, 6 oder 7, dadurch gekennzeichnet, dass das Hydraulikantriebspumpsystem (102) mehrere mechanisch miteinander gekoppelte Hydraulikpumpen (102a1 , 102a2, 102b, 102c, 102d) aufweist, wobei eine der Hydraulikpumpen (102a1 , 102a2, 102b, 102c, 102d) des Hydraulikantriebspumpsystems (102) zusätzlich als Hydraulikmotor (300) ausgebildet ist und weiterhin dazu ausgebildet ist, das restliche Hydraulikantriebspumpsystem (102) anzutreiben. 13. Truck-mounted concrete pump (100) according to claim 5, 6 or 7, characterized in that the hydraulic drive pump system (102) has a plurality of hydraulic pumps (102a1, 102a2, 102b, 102c, 102d) mechanically coupled to one another, one of the hydraulic pumps (102a1, 102a2, 102b, 102c, 102d) of the hydraulic drive pump system (102) is additionally designed as a hydraulic motor (300) and is also designed to drive the rest of the hydraulic drive pump system (102).
14. Zusatzaggregat zum elektrischen Antrieb einer Autobetonpumpe (100) nach einem der Ansprüche 5 bis 13, wobei das Zusatzaggregat (200) eine von einem Elektromotor (203) des Zusatzaggregates (200) angetriebene Hydraulikpumpe (202) aufweist, die zum hydraulischen Antrieb eines Hydraulikmotors (300) der Autobetonpumpe (100) mit diesem über Hydraulikölleitungen (209a, 209b, 305a, 305b) verbindbar ist. 14. Additional unit for electrically driving a truck-mounted concrete pump (100) according to one of Claims 5 to 13, the additional unit (200) having a hydraulic pump (202) driven by an electric motor (203) of the additional unit (200) for hydraulically driving a hydraulic motor (300) of the truck-mounted concrete pump (100) can be connected to this via hydraulic oil lines (209a, 209b, 305a, 305b).
15. Verwendung eines Zusatzaggregates (200), das eine von einem Elektromotor (203) angetriebene Hydraulikpumpe (202) aufweist, zum hydraulischen Antrieb eines Hydraulikmotors (300) einer von dem Zusatzaggregat (200) separaten Autobetonpumpe (100). 15. Use of an additional unit (200), which has a hydraulic pump (202) driven by an electric motor (203), for hydraulically driving a hydraulic motor (300) of a truck-mounted concrete pump (100) separate from the additional unit (200).
16. Verwendung nach Anspruch 15, wobei die Hydraulikpumpe (202) des Zusatzaggregates (200) zum hydraulischen Antrieb eines Hydraulikmotors (300) der Autobetonpumpe (100) mit diesem über Hydraulikölleitungen (209a, 209b, 305a, 305b) reversibel verbunden wird. - Zusammenfassung - 16. Use according to claim 15, wherein the hydraulic pump (202) of the additional unit (200) for hydraulically driving a hydraulic motor (300) of the truck-mounted concrete pump (100) is reversibly connected to the latter via hydraulic oil lines (209a, 209b, 305a, 305b). - Summary -
PCT/EP2023/054007 2022-02-18 2023-02-17 Auxiliary unit and system for electrically driving a truck-mounted concrete pump, and truck-mounted concrete pump WO2023156581A1 (en)

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