AUTOBETONPUMP

Description

[0001] The invention relates to a truck-mounted concrete pump.

[0002] EP 3 023 212 A1 by CIFA SPA, or a YouTube video by CIFA entitled "CIFA Hybrid Technology," discloses a concrete placement vehicle comprising a moving means, for example, a truck, provided with a main engine for moving the truck using a moving unit, a concrete placement unit equipped with a pumping device configured to convey the concrete along a conduit. The vehicle includes a unit for generating and supplying electrical energy configured to selectively power one or more of the moving unit of the truck, the concrete placement unit, and the pumping device.

[0003] Furthermore, DE 10 2010 046 615 A1 discloses a device for air conditioning a motor vehicle. The motor vehicle has at least one electric machine. The device comprises at least one fluid circuit. At least one heat exchanger, a pump, and a thermal accumulator are arranged in the fluid circuit. The electric machine forms the thermal accumulator. The term "electric machine" encompasses all known machines by means of which mechanical energy can be generated from electrical energy, for example, asynchronous machines, synchronous machines, and direct current machines.

[0004] Furthermore, EP 1 713 159 A1 discloses a variable speed synchronous electric motor with a rotor immersed in a liquid, particularly for pumps.

[0005] Furthermore, CN 202 969 950 U discloses a concrete pumping device with hybrid drive.

[0006] Furthermore, US 6 022 048 A discloses a drive motor mounting module for a hybrid electric vehicle and the motor mounting module in combination with the hybrid electric vehicle. More specifically, the drive motor mounting module consists of a drive motor, a front motor mount bracket, a front chassis mount, a chassis cross member, two rear motor mounts, two cross braces, two vertical channels, and two motor module locating brackets. The entire module can be modularly assembled on a main assembly line prior to installation into the vehicle chassis. The mounting module engages the drive motor with the chassis through three-point mounts.

[0007] Furthermore, CN 108 382 180 A discloses a vehicle-mounted parallel-type oil-electric hybrid drive concrete pump comprising a vehicle chassis unit and a pump unit. The vehicle chassis unit includes a clutch, a transmission, a transfer case, a universal transmission device, a drive axle, a drive system, and a braking system. The pump unit includes a pumping system, a swing system, a stirring / cooling / lubricating / cleaning system, and an outrigger system. A pumping system hydraulic pump, a swing system hydraulic pump, a stirring / cooling / lubricating / cleaning system hydraulic pump, and an outrigger system hydraulic pump are provided for the pumping system, the swing system, the stirring / cooling / lubricating / cleaning system, and the outrigger system, respectively.A diesel engine and a motor / generator are connected in parallel via a power coupling device to form a parallel type hybrid drive structure, and energy saving and emission reduction of the vehicle-mounted concrete pump are achieved through the action of an energy management system. TASK AND SOLUTION

[0008] The object of the invention is to provide a truck-mounted concrete pump which has improved properties.

[0009] The invention solves this problem by providing a truck-mounted concrete pump with the features of claim 1. Advantageous further developments and / or embodiments of the invention are described in the dependent claims.

[0010] The truck-mounted concrete pump according to the invention comprises a concrete pumping system, a hydraulic drive pumping system, an internal combustion engine system, and a liquid-cooled, in particular water- or oil-cooled, synchronous drive motor. The concrete pumping system is designed for the, in particular automatic, conveyance or, in particular automatic, pumping of concrete. The hydraulic drive pumping system is designed for the, in particular automatic and / or hydraulic, drive of the concrete pumping system. Furthermore, the hydraulic drive pumping system has a hydraulic pump drive shaft. The internal combustion engine system is designed for the, in particular automatic and / or mechanical, drive of the hydraulic pump drive shaft of the hydraulic drive pumping system. The liquid-cooled synchronous drive motor is designed for the, in particular automatic and / or mechanical, drive of the, in particular the same, hydraulic pump drive shaft of the hydraulic drive pumping system.

[0011] The liquid-cooled synchronous drive motor can have a relatively small volume and / or a relatively low mass or weight. Thus, the liquid-cooled synchronous drive motor can enable the liquid-cooled synchronous drive motor and the combustion engine system to drive the, in particular the same, hydraulic pump drive shaft of the hydraulic drive pump system. In particular, the truck-mounted concrete pump can have only a single hydraulic drive pump system, in particular having only a single hydraulic pump drive shaft. In other words, the truck-mounted concrete pump can or does not need to have a plurality of hydraulic drive pump systems having a plurality of hydraulic pump drive shafts. Thus, the liquid-cooled synchronous drive motor can enable a relatively compact and / or relatively lightweight design of the truck-mounted concrete pump, in particular with relatively few components.This allows the truck-mounted concrete pump, for the first time, to operate effectively, particularly with effective concrete delivery, with relatively low or even zero exhaust emissions and / or with a relatively low noise level. This makes the truck-mounted concrete pump particularly suitable for use on inner-city construction sites.

[0012] In particular, the truck-mounted concrete pump can be described as a mobile, particularly self-propelled, concrete pump.

[0013] Additionally or alternatively, the concrete pump system may comprise at least one piston pump, in particular a double piston pump, for, in particular, automatic, conveyance of concrete.

[0014] Furthermore, additionally or alternatively, the hydraulic drive pump system can comprise a number of hydraulic drive pumps for, in particular, automatically and / or hydraulically driving the concrete pumping system. The hydraulic pump drive shaft can be designed for, in particular, automatically and / or mechanically driving the number of hydraulic drive pumps. In particular, the number of hydraulic drive pumps can be mechanically rigidly connected to the hydraulic pump drive shaft, in particular, be seated on the hydraulic pump drive shaft. Additionally or alternatively, the hydraulic drive pump system can be different from the concrete pumping system.

[0015] Furthermore, or alternatively, the internal combustion engine system may comprise one, in particular only a single, internal combustion engine, in particular a diesel engine, for driving, in particular automatically and / or mechanically, the hydraulic pump drive shaft of the hydraulic drive pump system. Furthermore, the internal combustion engine system may comprise a vehicle transmission. Furthermore, or alternatively, the internal combustion engine system may be different from the hydraulic drive pump system.

[0016] Furthermore, additionally or alternatively, the liquid-cooled synchronous drive motor can have one, in particular only a single, synchronous motor for, in particular, automatically and / or mechanically driving the hydraulic pump drive shaft of the hydraulic drive pump system. In particular, the synchronous motor can be a reluctance motor. Additionally or alternatively, the synchronous motor can be a single-phase or three-phase synchronous machine in motor operation, in which a constantly magnetized rotor can be synchronously driven by a moving magnetic rotating field in the stator. In addition, the liquid-cooled synchronous drive motor can have liquid cooling, in particular water or oil cooling, for or for cooling the synchronous motor. Liquid cooling can refer to a cooling system, in particular a cooling circuit system, in which the primary heat-dissipating coolant can be a liquid, in particular water or oil.Further additionally or alternatively, the liquid-cooled synchronous drive motor may be different from the internal combustion engine system and / or the hydraulic drive pump system.

[0017] Furthermore, or alternatively, the truck-mounted concrete pump can be designed such that, in particular at a time, either, in particular exclusively, the combustion engine system or, in particular exclusively, the liquid-cooled synchronous drive motor or, in particular simultaneously, the combustion engine system and the liquid-cooled synchronous drive motor can drive the hydraulic pump drive shaft of the hydraulic drive pump system. In addition, the truck-mounted concrete pump can be designed for, in particular automatically, switching or converting between the combustion drive and / or the synchronous drive or electric operation and / or hybrid operation. Further, or alternatively, the truck-mounted concrete pump can be referred to as a parallel hybrid truck-mounted concrete pump.

[0018] The truck-mounted concrete pump has an electrical energy storage device, in particular an accumulator. The electrical energy storage device is electrically connected to the liquid-cooled synchronous drive motor, in particular by or via a converter or transformer, in particular an electrical one. Furthermore, the electrical energy storage device is designed to deliver electrical power or electrical energy to the liquid-cooled synchronous drive motor. This allows the truck-mounted concrete pump to be operated at least partially electrically in the absence of an electrical construction site connection. If more power is required, the combustion engine system can be switched on.The truck-mounted concrete pump is designed to charge the electrical energy storage device by the liquid-cooled synchronous drive motor as a generator from the combustion engine system, in particular if the combustion engine system can supply more power or energy than required by the hydraulic drive pump system, in particular temporarily.

[0019] The truck-mounted concrete pump has a body and a vehicle frame, which is in particular different from the body. The body supports the concrete pumping system. The vehicle frame supports the body. The liquid-cooled synchronous drive motor is partially spatially arranged between main longitudinal members of the body and / or the vehicle frame. This enables optimal use of the installation space. In other words: the liquid-cooled synchronous drive motor can or does not need to be spatially arranged on the body, or the body can or does not need to support the liquid-cooled synchronous drive motor. Thus, the liquid-cooled synchronous drive motor can or does not need to take up any installation space or area on the body. In particular, the body can be referred to as a flatbed, particularly in the right or left area of the truck-mounted concrete pump. Additionally or alternatively, the vehicle frame can be referred to as the vehicle chassis.Furthermore, or alternatively, the vehicle frame can be a truck frame, or the truck-mounted concrete pump can be mounted on a truck. Furthermore, or alternatively, the liquid-cooled synchronous drive motor can be spatially arranged entirely between the main longitudinal members of the body and / or the vehicle frame, or can extend vertically downwards and / or upwards beyond the main longitudinal members.

[0020] In a further development of the invention, the truck-mounted concrete pump has at least one travel drive axle. The combustion engine system is designed to drive, in particular automatically and / or mechanically, the at least one travel drive axle. Thus, the combustion engine system can ensure both travel operation and pumping operation of the truck-mounted concrete pump. In particular, the truck-mounted concrete pump can be designed such that, in particular at a time, the combustion engine system can drive either, in particular exclusively, the at least one travel drive axle or, in particular exclusively, the hydraulic pump drive shaft of the hydraulic drive pump system. In addition, the truck-mounted concrete pump can be designed to switch or convert, in particular automatically, between travel operation and pumping operation.

[0021] In one embodiment of the invention, the truck-mounted concrete pump has a transfer case. The transfer case is designed to connect, in particular automatically and / or mechanically, the combustion engine system either to, in particular exclusively, the at least one travel drive axle or to, in particular exclusively, the hydraulic pump drive shaft of the hydraulic drive pump system.

[0022] In one embodiment of the invention, the internal combustion engine system is mechanically connected to the transfer case, in particular by means of a propeller shaft, in particular exclusively by means of the propeller shaft. This enables a relatively simple connection, in particular with relatively few components. In particular, the internal combustion engine system can or need not be hydraulically connected to the transfer case.

[0023] In one embodiment of the invention, the hydraulic drive pump system has one, in particular the number of hydraulic drive pumps. The transfer case has a drive side and an opposite or remote output side. The combustion engine system and the liquid-cooled synchronous drive motor are spatially arranged, in particular entirely, on the drive side. Furthermore, the number of hydraulic drive pumps is spatially arranged, in particular entirely, on the output side. This enables optimal use of the installation space. In particular, no hydraulic drive pump can or needs to be spatially arranged on the drive side. Additionally or alternatively, the travel drive axle can be spatially arranged on the output side.

[0024] In one embodiment of the invention, the liquid-cooled synchronous drive motor is connected to the hydraulic pump drive shaft of the hydraulic drive pump system through or via the transfer case, in particular through and / or mechanically, in particular flange-mounted directly or immediately to the transfer case. This enables the transfer case to be used to distribute the mechanical energy of two drives, namely the combustion engine system and the liquid-cooled synchronous drive motor. In particular, the truck-mounted concrete pump can be designed for, in particular automatic, switching or conversion between the combustion drive and / or the synchronous drive and / or hybrid operation through or via the transfer case.Additionally or alternatively, the hydraulic pump drive shaft of the hydraulic drive pump system can extend through the transfer case, in particular from the output side to the drive side. Furthermore, additionally or alternatively, the liquid-cooled synchronous drive motor can be flanged to the transfer case on the same side as the internal combustion engine system and / or on the drive side.

[0025] In a further development of the invention, the liquid-cooled synchronous drive motor is mechanically rigidly connected to the hydraulic pump drive shaft of the hydraulic drive pump system. The liquid-cooled synchronous drive motor sits on the hydraulic pump drive shaft. This enables a relatively simple connection, in particular with relatively few components. In particular, the liquid-cooled synchronous drive motor can be connected to the hydraulic pump drive shaft of the hydraulic drive pump system and / or to the combustion engine drive system without or without needing to be connected via a separable clutch or freewheel. Additionally or alternatively, the liquid-cooled synchronous drive motor can be designed for idle running or passive rotation, in particular in the combustion engine drive.

[0026] In a further development of the invention, the liquid-cooled synchronous drive motor is designed for a rated electrical power of at least 60 kilowatts (kW), in particular of at least 80 kW. Additionally or alternatively, the liquid-cooled synchronous drive motor has a rated electrical power density of at least 0.4 kilowatts per kilogram (kW / kg), in particular of at least 0.5 kW / kg. This can enable the liquid-cooled synchronous drive motor to cover the full functionality of the truck-mounted concrete pump, in particular of the hydraulic drive pump system and thus of the concrete pumping system, and can be designed for both full-load and partial-load operation.In particular, the rated electrical power can refer to a continuous power, whereby the continuous power of the liquid-cooled synchronous drive motor can be the highest power that can be achieved during intended operation without time restrictions and that cannot impair the service life and safety of the liquid-cooled synchronous drive motor. Additionally or alternatively, the rated electrical power can be defined by or via P6 = √3 x I x U for three-phase current (I: current, U: voltage).

[0027] In a further development of the invention, the truck-mounted concrete pump has an electrical grid connection. The electrical grid connection is electrically connected to the liquid-cooled synchronous drive motor, in particular by or via a converter or transformer, in particular the and / or electrical converter. Furthermore, the electrical grid connection is designed for electrical connection to an electrical construction site grid connection, in particular a construction site power distribution box and / or a three-phase network. This allows the relatively high power requirement of the truck-mounted concrete pump, in particular the liquid-cooled synchronous drive motor, to be covered by or via the construction site power. If more power is required, the combustion engine system can be switched on.In particular, the electrical grid connection can be designed to supply electrical power or electrical energy to the liquid-cooled synchronous drive motor. Additionally or alternatively, the electrical grid connection can have a power plug, in particular a three-phase plug connector. Furthermore, additionally or alternatively, the truck-mounted concrete pump, in particular the electrical components, can be designed or constructed in such a way that the pump operator can establish the electrical connection themselves, in particular by plugging the power plug into a corresponding socket or receptacle of the construction site power connection. This can make it possible to avoid the need or necessity to hire an electrician specifically to connect the truck-mounted concrete pump.

[0028] In one embodiment of the invention, the electrical energy storage device is electrically connected and configured to receive electrical power from or to the electricity grid connection that is not required by the liquid-cooled synchronous drive motor, in particular temporarily or at a first point in time, or excess electrical power, in particular through or via a converter or transformer, in particular the and / or electrical converter. Furthermore, the electrical energy storage device is configured to deliver electrical power or electrical energy required by the liquid-cooled synchronous drive motor, in particular temporarily or at a second point in time different from the first point in time, in addition to the electrical power from the electricity grid connection.Typically, the construction site electrical grid connection only provides a limited amount of electrical power or is restricted to a certain electrical power load. The truck-mounted concrete pump, in particular the electrical energy storage device, enables the liquid-cooled synchronous drive motor to have at least temporarily or intermittently more electrical power available than is provided by the construction site electrical grid connection. In particular, a relatively high, particularly short-term, power demand or a power peak of the liquid-cooled synchronous drive motor can be covered by the electricity grid connection or the electrical construction site electrical grid connection and additionally by the electrical energy storage device, in particular simultaneously. At times when the power demand is relatively low, the electrical energy storage device can absorb the unused electrical power from the electricity grid connection.In other words: in case of overload, the electrical energy storage can be tapped; in case of power reserve, the electrical energy storage can be charged.

[0029] In a further development of the invention, the truck-mounted concrete pump has a concrete placing boom. The concrete placing boom is designed to distribute concrete, in particular, delivered or pumped by the concrete pumping system. The hydraulic drive pump system is designed to drive the concrete placing boom. BRIEF DESCRIPTION OF THE DRAWINGS

[0030] Further advantages and aspects of the invention emerge from the claims and from the following description of preferred embodiments of the invention, which are explained below with reference to the figures. Fig. 1 a side view of a truck-mounted concrete pump according to the invention, Fig. 2 a plan view of a body and a vehicle frame in a Fig. 1 dashed marked installation area of the truck-mounted concrete pump of the Fig. 1 , Fig. 3 a circuit diagram of the truck-mounted concrete pump of the Fig. 1 , and Fig. 4 another circuit diagram of the truck-mounted concrete pump of the Fig. 1 . DETAILED DESCRIPTION OF THE EMBODIMENTS

[0031] Fig. 1 bis 4 show a truck-mounted concrete pump 1 according to the invention. The truck-mounted concrete pump 1 has a concrete pumping system 2, a hydraulic drive pumping system 3, an internal combustion engine system 5, and a liquid-cooled synchronous drive motor 6. The concrete pumping system 2 is designed to pump concrete. The hydraulic drive pumping system 3 is designed to drive the concrete pumping system 2. Furthermore, the hydraulic drive pumping system 3 has a hydraulic pump drive shaft 4. The internal combustion engine system 5 is designed to drive the hydraulic pump drive shaft 4 of the hydraulic drive pumping system 3. The liquid-cooled synchronous drive motor 6 is designed to drive the hydraulic pump drive shaft 4 of the hydraulic drive pumping system 3.

[0032] In the illustrated embodiment, the concrete pump system 2 comprises at least one piston pump, in particular a double-piston pump, for conveying concrete. Furthermore, in the illustrated embodiment, the hydraulic drive pump system 3 comprises at least one drive cylinder 18, in particular two drive cylinders 18, and at least one drive piston, in particular two drive pistons, as shown in Fig. 2 shown. The at least one drive piston is designed to drive the at least one piston pump. The hydraulic pump drive shaft 4 is designed to drive the at least one drive piston.

[0033] Furthermore, the internal combustion engine system 5 has an internal combustion engine 22 for driving the hydraulic pump drive shaft 4 of the hydraulic drive pump system 3, as shown in Fig. 3 shown. In addition, the internal combustion engine system 5 has a vehicle transmission 23.

[0034] In addition, the liquid-cooled synchronous drive motor 6 has a synchronous motor 24 for driving the hydraulic pump drive shaft 4 of the hydraulic drive pump system 3, as shown in Fig. 2 In addition, the liquid-cooled synchronous drive motor 6 has a liquid cooling 25 for cooling the synchronous motor 24, as shown in Fig. 3 shown.

[0035] Furthermore, the truck-mounted concrete pump 2 has a concrete placing boom 16, as shown in Fig. 1 shown. The concrete placing boom 16 is designed to distribute conveyed concrete. The hydraulic drive pump system 3 is designed to drive the concrete placing boom 16. In addition, the truck-mounted concrete pump has a body 7 and a vehicle frame 8, as shown in Fig. 2 shown. The body 7 supports the concrete pumping system 2. The vehicle frame 8 supports the body 7. The liquid-cooled synchronous drive motor 6, in particular the synchronous motor 24, is spatially arranged between main longitudinal members 17 of the vehicle frame 8. In alternative embodiments, the liquid-cooled synchronous drive motor can additionally or alternatively be spatially arranged between main longitudinal members of the body.

[0036] In the embodiment shown, the body 7 additionally carries the concrete placing boom 16. Furthermore, in the embodiment shown, the hydraulic pump drive shaft 4 of the hydraulic drive pump system 3 is spatially arranged between the main longitudinal members 17 of the vehicle frame 8.

[0037] In addition, the truck-mounted concrete pump 1 has at least one travel drive axle 9. The combustion engine system 5, in particular the combustion engine 22, is designed to drive the at least one travel drive axle 9, as shown in Fig. 3 shown.

[0038] In the illustrated embodiment, the truck-mounted concrete pump 1 has two drive axles 9. In alternative embodiments, the truck-mounted concrete pump can have only a single drive axle or at least three drive axles. Furthermore, in the illustrated embodiment, the at least one drive axle 9 is a rear axle.

[0039] In addition, the truck-mounted concrete pump 1 has a transfer case 10. The transfer case 10 is designed to connect the combustion engine system 5 either to the at least one travel drive axle 9 or to the hydraulic pump drive shaft 4 of the hydraulic drive pump system 3, as shown in Fig. 4 shown.

[0040] In the embodiment shown, the transfer case 10 is spatially arranged between the main longitudinal members 17 of the vehicle frame 8.

[0041] In detail, the internal combustion engine system 5, in particular the vehicle transmission 23, is mechanically connected to the transfer case 10, in particular by means of a cardan shaft 11.

[0042] The hydraulic drive pump system 3 further comprises a number of hydraulic drive pumps 12. The transfer case 10 has a drive side IS and an opposite output side OS. The internal combustion engine system 5, in particular the internal combustion engine 22 and the vehicle transmission 23, and the liquid-cooled synchronous drive motor 6, in particular the synchronous motor 24, are spatially arranged on the drive side IS. Furthermore, the number of hydraulic drive pumps 12 is spatially arranged on the output side OS, in particular flange-mounted directly to the transfer case 10.

[0043] In the illustrated embodiment, the hydraulic drive pump system 3 has four hydraulic drive pumps 12. In alternative embodiments, the hydraulic drive pump system can have only a single hydraulic drive pump or two, three, or at least five hydraulic drive pumps. Furthermore, in the illustrated embodiment, the at least one travel drive axle 9 is spatially arranged on the output side OS. Furthermore, in the illustrated embodiment, the number of hydraulic drive pumps 12 is spatially arranged between the main longitudinal members 17 of the vehicle frame 8. Furthermore, in alternative embodiments, at least one of the number of hydraulic drive pumps can be spatially arranged on the drive side. In particular, the liquid-cooled synchronous drive motor, in particular the synchronous motor, in particular with a through drive, can be arranged between the hydraulic drive pump arranged on the drive side and the transfer case.

[0044] In detail, the number of hydraulic drive pumps 12 is configured to drive the concrete pumping system 2, in particular the at least one drive piston. The hydraulic pump drive shaft 4 is configured to drive the number of hydraulic drive pumps 12. In the illustrated embodiment, the number of hydraulic drive pumps 12 is mechanically rigidly connected to the hydraulic pump drive shaft 4; in particular, the number of hydraulic drive pumps 12 is mounted on the hydraulic pump drive shaft 4.

[0045] In addition, the liquid-cooled synchronous drive motor 6, in particular the synchronous motor 24, is connected to the hydraulic pump drive shaft 4 of the hydraulic drive pump system 3 through the transfer case 10, in particular directly flanged to the transfer case 10.

[0046] Furthermore, the liquid-cooled synchronous drive motor 6, in particular the synchronous motor 24, is mechanically rigidly connected to the hydraulic pump drive shaft 4 of the hydraulic drive pump system 3, wherein the liquid-cooled synchronous drive motor 6, in particular the synchronous motor 24, is seated on the hydraulic pump drive shaft 4.

[0047] In detail, the hydraulic pump drive shaft 4 of the hydraulic drive pump system 3 extends through the transfer case 10, in particular from the output side OS to the drive side IS.

[0048] In addition, the liquid-cooled synchronous drive motor 6, in particular the synchronous motor 24, is designed to run idle.

[0049] In alternative embodiments, the liquid-cooled synchronous drive motor, in particular the synchronous motor, can be connected to the hydraulic pump drive shaft of the hydraulic drive pump system and / or to the combustion engine system via a separable clutch or a freewheel, in particular between the liquid-cooled synchronous drive motor, in particular the synchronous motor, and the transfer case, in particular if the liquid-cooled synchronous drive motor, in particular the synchronous motor, cannot be designed to run idle.

[0050] Additionally or alternatively, in alternative embodiments, the liquid-cooled synchronous drive motor, in particular the synchronous motor, can comprise, in particular be, a hollow-shaft motor. The hollow-shaft motor can be located on the cardan shaft and designed to drive the cardan shaft. Furthermore, additionally or alternatively, in alternative embodiments, the liquid-cooled synchronous drive motor, in particular the synchronous motor, in particular the hollow-shaft motor, can be integrated into the vehicle transmission, if present.

[0051] If in the embodiment shown a shift shaft 26 of the transfer case 10 in Fig. 4 is shifted to the left, the combustion engine system 5 can drive the hydraulic pump drive shaft 4 of the hydraulic drive pump system 3. A shaft of the liquid-cooled synchronous drive motor 6, in particular the synchronous motor 24, can run idle. Alternatively, the liquid-cooled synchronous drive motor 6, in particular the synchronous motor 24, can additionally drive the hydraulic pump drive shaft 4 of the hydraulic drive pump system 3. The at least one travel drive axle 9 is decoupled.

[0052] If in the embodiment shown the shift shaft 26 of the transfer case 10 in Fig. 4 is shifted to the right, the combustion engine system 5 can drive the at least one travel drive axle 9. The liquid-cooled synchronous drive motor 6, in particular the synchronous motor 24, can drive the hydraulic pump drive shaft 4 of the hydraulic drive pump system 3. The shift shaft 26 and a Fig. 4upper shaft, in particular the hydraulic pump drive shaft 4, are decoupled.

[0053] Furthermore, the liquid-cooled synchronous drive motor 6, in particular the synchronous motor 24, is designed for a nominal electrical power P6 of at least 60 kW, in particular of at least 80 kW. In addition, the liquid-cooled synchronous drive motor 6, in particular the synchronous motor 24, has a nominal electrical power density PD6 of at least 0.4 kW / kg, in particular of at least 0.5 kW / kg.

[0054] In addition, the truck-mounted concrete pump 1 has an electrical grid connection 13. The electrical grid connection 13 is electrically connected, in particular via a converter 19, to the liquid-cooled synchronous drive motor 6, in particular to the synchronous motor 24. Furthermore, the electrical grid connection 13 is designed for electrical connection to an electrical construction site grid connection 14, in particular a three-phase network.

[0055] In detail, the electricity grid connection 13 has a power plug 20 and a power cable 21.

[0056] If, in the embodiment shown, the electricity grid connection 13 or the electrical construction site grid connection 14 feeds the liquid-cooled synchronous drive motor 6, in particular the synchronous motor 24, the converter 19 converts alternating voltage AC to direct voltage DC to alternating voltage AC.

[0057] In addition, the truck-mounted concrete pump 1 has an electrical energy storage device 15. The electrical energy storage device 15 is electrically connected, in particular via the converter 19, to the liquid-cooled synchronous drive motor 6, in particular to the synchronous motor 24. Furthermore, the electrical energy storage device 15 is designed to deliver electrical power P15 to the liquid-cooled synchronous drive motor 6, in particular to the synchronous motor 24.

[0058] When, in the embodiment shown, the electrical energy storage device 15 feeds the liquid-cooled synchronous drive motor 6, in particular the synchronous motor 24, the converter 19 converts direct voltage DC to alternating voltage AC.

[0059] In detail, the electrical energy storage device 15 is electrically connected and configured to receive the electrical power Pex not required by the liquid-cooled synchronous drive motor 6, in particular the synchronous motor 24, from the electrical grid connection 13, in particular via the converter 19. Furthermore, the electrical energy storage device 15 is configured to output the electrical power P15 required by the liquid-cooled synchronous drive motor 6, in particular the synchronous motor 24, in addition to the electrical power Pin from the electrical grid connection 13.

[0060] If, in the embodiment shown, the electricity grid connection 13 or the electrical construction site grid connection 14 feeds or charges the electrical energy storage device 15, the converter 19 converts alternating voltage AC to direct voltage DC.

[0061] In the embodiment shown, the truck-mounted concrete pump 1 has the electricity grid connection 13 and the electrical energy storage device 15.

[0062] As the exemplary embodiments shown and explained above clearly demonstrate, the invention provides an advantageous truck-mounted concrete pump with improved properties. In particular, the truck-mounted concrete pump enables, for the first time, effective operation with relatively low or even zero exhaust emissions and a relatively low noise level.

Claims

1. A vehicle-mounted concrete pump (1), wherein the vehicle-mounted concrete pump (1) comprises: - a concrete pump system (2), wherein the concrete pump system (2) is designed to convey concrete, - a hydraulic drive pump system (3), wherein the hydraulic drive pump system (3) is designed to drive the concrete pump system (2) and has a hydraulic pump drive shaft (4), - a combustion drive motor system (5), wherein the combustion drive motor system (5) is designed to drive the hydraulic pump drive shaft (4) of the hydraulic drive pump system (3), - a drive motor (6), wherein the drive motor (6) is designed to drive the hydraulic pump drive shaft (4) of the hydraulic drive pump system (3), and - an electrical energy store (15), in particular an accumulator, wherein the electrical energy store (15) is electrically connected, in particular by means of a converter (19), to the drive motor (6) and is designed to output electrical power (P15) to the drive motor (6), - wherein the vehicle-mounted concrete pump (1) is designed to charge the electrical energy store (15) by means of the drive motor (6) as generator from the combustion drive motor system (5), - characterized in that the drive motor is a liquid-cooled synchronous drive motor (6) and that the vehicle-mounted concrete pump (1) comprises: - a superstructure (7), wherein the superstructure (7) carries the concrete pump system (2), and - a vehicle frame (8), wherein the vehicle frame (8) carries the superstructure (7), - wherein the liquid-cooled synchronous drive motor (6) is spatially arranged in part between main longitudinal members (17) of the superstructure (7) and / or of the vehicle frame (8).

2. The vehicle-mounted concrete pump (1) as claimed in claim 1, wherein the vehicle-mounted concrete pump (1) comprises: - at least one driving axle (9), wherein the combustion drive motor system (5) is designed to drive the at least one driving axle (9).

3. The vehicle-mounted concrete pump (1) as claimed in claim 2, wherein the vehicle-mounted concrete pump (1) comprises: - a transfer case (10), wherein the transfer case (10) is designed to connect, in particular mechanically, the combustion drive motor system (5) either to the at least one driving axle (9) or to the hydraulic pump drive shaft (4) of the hydraulic drive pump system (3).

4. The vehicle-mounted concrete pump (1) as claimed in claim 3, - wherein the combustion drive motor system (5) is mechanically connected, in particular by means of a cardan shaft (11), to the transfer case (10).

5. The vehicle-mounted concrete pump (1) as claimed in claim 3 or 4, - wherein the liquid-cooled synchronous drive motor (6) is connected, in particular mechanically, to the hydraulic pump drive shaft (4) of the hydraulic drive pump system (3) by the transfer case (10), in particular is directly flanged onto the transfer case (10).

6. The vehicle-mounted concrete pump (1) as claimed in one of the preceding claims, - wherein the liquid-cooled synchronous drive motor (6) is mechanically rigidly connected to the hydraulic pump drive shaft (4) of the hydraulic drive pump system (3), wherein the liquid-cooled synchronous drive motor (6) is seated on the hydraulic pump drive shaft (4).

7. The vehicle-mounted concrete pump (1) as claimed in one of the preceding claims, - wherein the liquid-cooled synchronous drive motor (6) is designed for an electrical rated power (P6) of at least 60 kW, in particular of at least 80 kW, and / or - wherein the liquid-cooled synchronous drive motor (6) has an electrical rated power density (PD6) of at least 0.4 kW / kg, in particular of at least 0.5 kW / kg.

8. The vehicle-mounted concrete pump (1) as claimed in one of the preceding claims, wherein the vehicle-mounted concrete pump (1) comprises: - an electricity mains connection (13), wherein the electricity mains connection (13) is electrically connected, in particular by means of a converter (19), to the liquid-cooled synchronous drive motor (6) and is designed for electrical connection to an electrical construction site mains connection (14).

9. The vehicle-mounted concrete pump (1) as claimed in claim 8, - wherein the electrical energy store (15) is electrically connected and designed to take up electrical power (Pex) not required by the liquid-cooled synchronous drive motor (6) from the electricity mains connection (13), and - wherein the electrical energy store (15) is designed to output electrical power (P15) required by the liquid-cooled synchronous drive motor (6), in addition to the electrical power (Pin) from the electricity mains connection (13).

10. The vehicle-mounted concrete pump (1) as claimed in one of the preceding claims, wherein the vehicle-mounted concrete pump (1) comprises: - a concrete distribution boom (16), wherein the concrete distribution boom (16) is designed to distribute conveyed concrete, - wherein the hydraulic drive pump system (3) is designed to drive the concrete distribution boom (16).