Method and truck-mounted concrete pump

Abstract

The invention relates to a method for operating a truck-mounted concrete pump (1) which has: a drive motor (2) and an automated transmission device (3) which is drive-connected to the drive motor (2) and has an automatically adjustable transmission ratio (i) for a transmission of a drive rotational speed (NI) of the drive motor (2) to an output rotational speed (NO) of an output (4) of the automated transmission device (3), a hydraulically drivable construction material and / or thick matter pump device (5) for conveying construction material and / or thick matter, a hydraulic pump train (6) which is or can be drive-connected to the output (4) of the automated transmission device (3), in order to generate a volumetric flow (VH) of hydraulic fluid for hydraulically driving the construction material and / or thick matter pump device (5); wherein the method comprises the following steps: specifying a setpoint value for the volumetric flow (VH) of hydraulic fluid or for a variable dependent on the volumetric flow (VH), and automatically adjusting the transmission ratio (i) of the automated transmission device (3) such that the output rotational speed (NO) is controlled in dependence on the setpoint value.

Description

[0001] Method and truck-mounted concrete pump

[0002] SCOPE OF APPLICATION AND STATE OF THE ART

[0003] The invention relates to a method for operating a truck-mounted concrete pump and to such a truck-mounted concrete pump for conveying construction and / or thick material.

[0004] TASK AND SOLUTION

[0005] It is an object of the invention to provide a method for operating a truck-mounted concrete pump and such a truck-mounted concrete pump for conveying construction material and / or viscous materials, each exhibiting improved properties. In particular, a particularly efficient operation of the truck-mounted concrete pump for conveying construction material and / or viscous materials is to be enabled.

[0006] A method according to the invention serves to operate a truck-mounted concrete pump designed for conveying construction aggregate and / or viscous materials. In particular, the truck-mounted concrete pump is operated according to the method, especially exclusively and / or without ferry operation, in its construction aggregate and / or viscous material conveying mode. The truck-mounted concrete pump has a drive motor. The truck-mounted concrete pump also has an automated transmission unit, which is connected to the drive motor. The automated transmission unit can therefore be driven by the drive motor. The automated transmission unit has an output. The output can be formed by an output shaft of the automated transmission unit. The output can form a gearbox output of the automated transmission unit.The automated transmission unit also features an automatically adjustable gear ratio for converting the input speed of the drive motor to the output speed of the output. Thus, the automated transmission unit allows the instantaneous input speed of the drive motor to be converted to the instantaneous output speed of the output, depending on the currently set gear ratio. The truck-mounted concrete pump also has a hydraulically driven construction material pump unit and / or viscous material pump unit for conveying construction material and / or viscous materials. In the following, the terms "construction material pump unit and / or viscous material pump unit" will be shortened and / or synonymously referred to as "construction material pump unit and / or viscous material pump unit". Furthermore, the truck-mounted concrete pump has a hydraulic pump train that is directly connected to, or can be connected to, the output of the automated transmission unit.The drive power provided by the drive motor can be transmitted via the gearbox to the hydraulic pump train to drive it. The hydraulic pump train can be driven at the output speed. It can be driven to generate a flow of hydraulic fluid, which is circulated, in particular, through the hydraulic system of the truck-mounted concrete pump. This hydraulic system may have a hydraulic circuit. The flow of hydraulic fluid generated by the hydraulic pump train, especially depending on the output speed, serves to hydraulically drive the construction and / or slurry pumping unit. This flow of hydraulic fluid can be supplied to the construction and / or slurry pumping unit to provide it with hydraulic drive power.The hydraulic fluid of the volume flow has, in particular, a hydraulic pressure that can be generated by means of the hydraulic pump train for the hydraulic driving of the construction and / or viscous material pumping device.

[0007] The inventive method for operating the truck-mounted concrete pump comprises a step in which a setpoint for the hydraulic fluid flow rate, or for a quantity directly dependent on the flow rate, is specified. Furthermore, the method comprises a step in which the gear ratio of the automated transmission is automatically adjusted so that the output speed is controlled as a function of the setpoint. In this way, the drive motor can be operated particularly efficiently when its drive power is used, in particular exclusively, for the construction and / or high-density concrete pumping operation of the truck-mounted concrete pump. This minimizes the energy consumption for operating the drive motor during construction and / or high-density concrete pumping operations.Furthermore, the volume flow of hydraulic fluid in construction and / or viscous material conveying operations can be kept desirablely low, which can have an advantageous effect with regard to cooling requirements for the hydraulic fluid and / or with regard to aging of the hydraulic fluid.

[0008] The viscous material can be a building material. The viscous material can be a slurry-like mixture of different substances. The viscous material can be mortar, cement, screed, or concrete, each in a mixable and / or pumpable state. In the mixable and / or pumpable state, the viscous material is not yet hardened or set. It is understood that, using the truck-mounted concrete pump, various building materials and / or viscous materials, including concrete, can be pumped during normal operation. Accordingly, the truck-mounted concrete pump can also be referred to and used as a truck-mounted building material pump and / or truck-mounted viscous material pump. In this context, a drive connection can be understood as a coupling for the, in particular mechanical, transmission of drive power.

[0009] In particular, the terms "exhibits" and / or "has" can be used synonymously with the term "includes" and / or "has". Additionally or alternatively, the term "configured" can be used synonymously with the term "trained". Furthermore, the term "directly" can be used synonymously with the term "immediately". Additionally or alternatively, the term "indirectly" can be used synonymously with the term "indirectly".

[0010] In this context, "control" can mean "steer" and / or "regulate".

[0011] The phrase “as well as alternatively or additionally” can be replaced in the present context by the phrase “and / or”, and vice versa.

[0012] The automated transmission system of the truck-mounted concrete pump can have an automatically continuously or stepwise adjustable transmission ratio for the translation of the input speed to the output speed.

[0013] In an embodiment of the invention, the automated transmission device has a plurality of automatically selectable gear stages. The automated transmission device can be designed as a multi-stage transmission. The gear stages have different gear ratios for converting the input speed to the output speed. The currently selected gear stage is taken into account when automatically adjusting the gear ratio. The currently selected gear stage is, in particular, the gear stage by which the drive connection between the drive motor and the output of the transmission device is currently realized. Each gear stage can form one gear of the transmission device.

[0014] In a further embodiment of the invention, the hydraulic pump train comprises a number of hydraulic pumps. Advantageously, the hydraulic pumps of the hydraulic pump train are arranged in series on a common hydraulic pump drive shaft of the hydraulic pump train. At least one of the hydraulic pumps is designed as a rotary pump with a variably adjustable swivel angle, wherein the volume flow of hydraulic fluid that can be generated by the hydraulic pump designed as a rotary pump depends on the set swivel angle of this rotary pump. Each of the hydraulic pumps, in particular each except one other hydraulic pump, and more specifically each except two other hydraulic pumps, can be designed as a rotary pump with a variably adjustable swivel angle, in particular individually, wherein the volume flow of hydraulic fluid that can be generated by each rotary pump depends on the respective set swivel angle.In this context, an "additional hydraulic pump" could be an agitator pump. The automatic adjustment of the gear ratio takes into account the currently set swivel angle, in particular the respective one.

[0015] Advantageously, the truck-mounted concrete pump may have other hydraulic pumps that are not arranged on the hydraulic pump drive shaft of the hydraulic pump train. In particular, at least two, and especially at least half, of the total number of hydraulic pumps of the truck-mounted concrete pump may be arranged on the hydraulic pump drive shaft of the hydraulic pump train, and in particular, at least one other hydraulic pump may not be arranged on the hydraulic pump drive shaft of the hydraulic pump train.

[0016] In a further embodiment of the invention, the hydraulic pump train has a predetermined minimum speed. In particular, at least this minimum speed is required to generate the required flow rate and / or to prevent damage to at least one hydraulic pump. The minimum speed can be 500 rpm. -1The volume flow rate is adjusted, in particular exclusively, by variably setting a swivel angle of at least one hydraulic pump in the hydraulic pump train, designed as a swivel pump, as long as the input speed corresponds to the minimum speed, in particular substantially. "Substantially" can include a tolerance that is taken into account when comparing the output speed with the minimum speed. For example, such a tolerance can be taken into account by assuming that the output speed corresponds to the minimum speed if the output speed differs from the minimum speed by less than + / - 10%, in particular for a predetermined period of time.

[0017] In a further embodiment of the invention, the transmission ratio is changed only when the at least one hydraulic pump, designed as a swivel pump, is fully swiveled out. During swiveling, the transmission ratio of the automated transmission can therefore be kept constant. After the swivel pump has been fully swiveled out, the transmission ratio of the automated transmission can be reduced, particularly in stages. In the fully swiveled position, the hydraulic fluid flow rate generated by the swivel pump can thus be maximized at a given output speed. The swivel pump is, in particular, an axial piston pump with an adjustable piston stroke. The term "swivel pump" can also be used to describe a different type of hydraulic pump in which the displacement volume per shaft revolution can be modified.

[0018] In a further embodiment of the invention, the drive speed is taken into account when automatically adjusting the transmission ratio.

[0019] In a further embodiment of the invention, the transmission ratio is automatically adjusted such that the drive speed is increased when a predetermined drive torque limit of the drive motor is reached. The hydraulic pressure of the hydraulic fluid in the flow rate and the drive torque provided by the drive motor are particularly interdependent.

[0020] In a further embodiment of the invention, the transmission ratio is changed by switching a gear stage of the automated transmission device depending on the movement of at least one delivery piston of the construction and / or high-viscosity pump device. In particular, the gear stage is changed when at least one delivery piston of the construction and / or high-viscosity pump device is at rest, especially when reversing its movement. In this way, it can advantageously be ensured that a switching operation to change the gear stage is carried out when the load acting on the transmission device is particularly low or the transmission device is even load-free.

[0021] In a further embodiment of the invention, the truck-mounted concrete pump features a hydraulically driven agitator for mixing the aggregate and / or viscous material before it is conveyed by the aggregate and / or viscous material pumping unit. The agitator can be arranged in a storage chamber of the truck-mounted concrete pump for holding the aggregate and / or viscous material to be conveyed, to which the aggregate and / or viscous material pumping unit is connected. In particular, the rotational speed of the agitator is adjusted by changing the flow rate.

[0022] In a further embodiment of the invention, the hydraulic pump train comprises at least two additional hydraulic pumps, in particular only, for hydraulically driving the agitator. The pump switches between these two additional hydraulic pumps for hydraulically driving the agitator depending on the output speed. By providing the two additional agitator pumps for hydraulically driving the agitator, the speed variability of the agitator can be reduced and / or limited. The hydraulic system of the truck-mounted concrete pump can be equipped with a controllable valve assembly for switching between the two additional hydraulic pumps.

[0023] In a further embodiment of the invention, the automated transmission device is a vehicle transmission device of the truck-mounted concrete pump. Advantageously, the vehicle transmission device is designed to connect at least one drive axle of the truck-mounted concrete pump to the drive motor, so that, in towing mode, drive power from the drive motor can be transferred to propel the truck-mounted concrete pump onto a surface. In this respect, the vehicle transmission device used for towing mode can advantageously fulfill a dual function, as it can be switched to drive the hydraulic pump train of the truck-mounted concrete pump when pumping construction aggregate and / or viscous material, in addition to the towing mode. When operating the truck-mounted concrete pump for pumping construction aggregate and / or viscous material, the truck-mounted concrete pump is specifically not in towing mode, i.e.,The truck-mounted concrete pump can be parked on a surface without forward thrust during pumping operation.

[0024] In a further embodiment of the invention, the truck-mounted concrete pump comprises a transfer case for connecting the hydraulic pump train and / or at least one drive axle of the truck-mounted concrete pump to the drive motor. In particular, the transfer case for connecting the hydraulic pump train and / or the at least one drive axle to a vehicle transmission of the truck-mounted concrete pump is designed to connect the hydraulic pump train and / or the at least one drive axle to the drive motor for propulsion via the vehicle transmission. The transfer case can have a constant gear ratio or be an automated transmission with an adjustable gear ratio.

[0025] In a further embodiment of the invention, the drive motor comprises or is an internal combustion engine. The internal combustion engine can, in particular, be in the form of a diesel engine.

[0026] The procedure for operating the truck-mounted concrete pump is preferably carried out automatically. It can therefore be an automated process. Alternatively or additionally, the process can be computer-implemented.

[0027] A truck-mounted concrete pump according to the invention is used for conveying construction aggregate and / or slurry. The truck-mounted concrete pump is designed to be operated according to a method according to the invention as described above, in particular in its construction aggregate and / or slurry conveying mode. The truck-mounted concrete pump can have a driving mode different from the construction aggregate and / or slurry conveying mode, in which the truck-mounted concrete pump is driven autonomously on a road surface. The truck-mounted concrete pump has a transmission control unit for controlling the drive transmission unit and a hydraulic pump control unit for controlling the hydraulic pump train. The transmission control unit and the hydraulic pump control unit are interconnected and coordinated for carrying out the method according to the invention and are designed and programmed – alternatively or additionally – as appropriate.

[0028] BRIEF DESCRIPTION OF THE DRAWINGS

[0029] Further advantages and features of the invention will become apparent from the claims and from the following description of a preferred embodiment of the invention, which is illustrated with reference to the drawings. In this context, identical reference numerals refer to identical, similar, or functionally equivalent components.

[0030] It is understood that the features mentioned above and those to be explained below can be used not only in the combination specified, but also in other combinations or on their own, without leaving the scope of the present invention.

[0031] Fig. 1 shows a rough schematic of the structure of an embodiment of a truck-mounted concrete pump according to the invention, which is designed for operation according to an embodiment of a method according to the invention.

[0032] Fig. 2 schematically shows a speed-volume flow diagram for an embodiment of the inventive method for operating the truck-mounted concrete pump according to Fig. 1 and

[0033] Fig. 3 shows a translation ratio-volume flow rate diagram for the embodiment of the method according to the invention as shown in Fig. 2. DETAILED DESCRIPTION OF THE EXAMPLES OF EXECUTION

[0034] A truck-mounted concrete pump 1 is used for pumping construction material and / or viscous materials. The truck-mounted concrete pump 1 is specifically a self-propelled work machine with a chassis and truck-mounted concrete pump body.

[0035] The truck-mounted concrete pump 1 has a drive motor 2. The truck-mounted concrete pump 1 also has an automated transmission unit 3. The automated transmission unit 3 is connected to the drive motor 2. The automated transmission unit 3 has an automatically adjustable gear ratio i, i1-i10 for converting a drive speed NI of the drive motor 2 to an output speed NO of an output 4 of the automated transmission unit 3. The truck-mounted concrete pump 1 also has a hydraulically driven construction and / or slurry pump unit 5 for pumping construction and / or slurry materials. Furthermore, the truck-mounted concrete pump 1 has a hydraulic pump train 6. The hydraulic pump train 6 is connected to, or can be connected to, the output 4 of the automated transmission unit 3 to generate a flow rate VH of hydraulic fluid for hydraulically driving the construction and / or slurry pump unit 5.

[0036] The truck-mounted concrete pump 1 has a transmission control unit 12, which is designed to control the automated transmission unit 3. The truck-mounted concrete pump 1 also has a hydraulic pump control unit 13, which is designed to control the hydraulic pump train 6. The transmission control unit 12 may include an electronic processor. The hydraulic pump control unit 13 may also include an electronic processor. The transmission control unit 12 and the hydraulic pump control unit 13 are, for example, designed and / or arranged separately from one another, in particular, separately housed.

[0037] The truck-mounted concrete pump 1 is operated according to a specific procedure, particularly when the truck-mounted concrete pump 1 is used for conveying construction material and / or viscous aggregate and is not operating in its ferry mode. When the procedure is carried out, the truck-mounted concrete pump 1 can be operated in a construction material and / or viscous aggregate conveying mode. The transmission control unit 12 and the hydraulic pump control unit 13 are interconnected and coordinated, configured, and / or programmed for the execution of the procedure.

[0038] The method includes a step in which a setpoint for the hydraulic fluid flow rate VH or a setpoint for a parameter dependent on the flow rate VH is specified. Furthermore, the method includes a further step in which the gear ratio i, i1-i10 of the automated transmission unit 3 is set, so that the output speed NO is controlled as a function of the setpoint.

[0039] The automated transmission device 3, for example, has a plurality of automatically selectable gear stages G1-G10, wherein the gear stages G1-G10 have different gear ratios i, i1-i10 for converting the input speed NI to the output speed NO. When automatically adjusting the gear ratio i, i1-i10, the currently selected gear stage G1-G10 is taken into account. As an alternative to the implementation of the automated transmission device 3 with multiple gear stages G1-G10, it is conceivable to implement the automated transmission device 3 with a continuously variable gear ratio i, i1-i10, which is not shown in the figures.

[0040] The hydraulic pump train 6, for example, comprises a number of hydraulic pumps 8. The number can be one, two, or more, or, as in this case, five. At least one—in this case, each—of the hydraulic pumps 8 is designed, for example, as a rotary pump 9 with a variably adjustable rotary angle α. The volume flow rate VH of hydraulic fluid that can be generated by each rotary pump 9 depends on the set rotary angle α. The set rotary angle α is taken into account in the automatic adjustment of the transmission ratio i, i1-i10.

[0041] The hydraulic pump train 6, for example, has a predetermined minimum speed NP. The volume flow rate VH is adjusted – in this case only – by variably adjusting the swivel angle a of at least one of the hydraulic pumps 8 of the hydraulic pump train 6, as long as the output speed NO corresponds to the minimum speed NP, in particular taking into account a tolerance band of + / - 10% around the minimum speed NP.

[0042] For example, a change in the transmission ratio i, i1-i10 only occurs when at least one hydraulic pump 8 designed as a swivel pump 9 is fully swivelled out.

[0043] The drive speed NI can be taken into account when automatically adjusting the transmission ratio i, i1-i10. For example, the automatic adjustment of the transmission ratio i, i1-i10 is such that the drive speed NI is increased when a predetermined drive torque limit of the drive motor 2 is reached. For example, the gear stage G1-G10 of the automated transmission unit 3 is changed depending on the movement of at least one delivery piston 14 of the construction and / or high-viscosity pump unit 5 in order to adjust the currently effective transmission ratio i, i1-i10 for converting the drive speed NI to the output speed NO. In particular, the gear stage G1-G10 is changed when at least one delivery piston 14 of the construction and / or high-viscosity pump unit 5 is at rest.For example, the conveying piston 14 is at rest relative to a conveying cylinder of the construction and / or thick material pumping device 5 that guides the conveying piston 14, when the conveying piston 14 is at one of its stroke reversal points.

[0044] The truck-mounted concrete pump 1 is equipped with a hydraulically driven agitator 7. The agitator 7 serves to mix the aggregate and / or viscous material before it is fed to the aggregate and / or viscous material pumping unit 5, i.e., before it is conveyed by the aggregate and / or viscous material pumping unit 5. In particular, the rotational speed of the agitator 7 is adjusted by changing the volume flow rate VH.

[0045] For example, the hydraulic pump train 6 has at least two, in this case exactly two, further hydraulic pumps 8, which are designed, in particular exclusively, for hydraulically driving the agitator 7. The system can switch between these at least two further hydraulic pumps 8 for hydraulically driving the agitator 7 depending on the output speed NO.

[0046] In this case, the automated transmission unit 3 of the truck-mounted concrete pump 1 is a vehicle transmission unit 15 of the truck-mounted concrete pump 1. The vehicle transmission unit 15 is designed to drive a drive axle 11 of the truck-mounted concrete pump 1 to the drive motor 2. The truck-mounted concrete pump 1 also has a transfer case unit 10, which is designed to drive the hydraulic pump train 6 and the drive axle 11 of the truck-mounted concrete pump 1 to the output 4 of the vehicle transmission unit 15. The transfer case unit 10 has a constant transmission ratio iV. If the transfer case unit 10 has a constant transmission ratio iV other than 1.0, the transfer case output speed can be assumed and / or set as the output speed of the transmission unit 3 for the process.

[0047] In alternative embodiments, the distribution gearbox 10 can form the automated transmission 3 of the truck-mounted concrete pump 1, although this is not shown in the figures. The drive motor 2, for example, has an internal combustion engine or is itself an internal combustion engine. In this case, the drive motor 2 is designed as an internal combustion engine in the form of a diesel engine. By operating the truck-mounted concrete pump 1 according to the method described above, the internal combustion engine can be operated in a particularly fuel-efficient manner during the pumping operation of the truck-mounted concrete pump 1.

Claims

Patent claims 1. Method for operating a truck-mounted concrete pump (1) designed for conveying construction and / or viscous materials and comprising: a drive motor (2) and an automated transmission device (3) connected to the drive motor (2) with an automatically adjustable transmission ratio (i, i1-i10) for converting a drive speed (NI) of the drive motor (2) to an output speed (NO) of an output (4) of the automated transmission device (3), - a hydraulically driven construction and / or viscous material pumping device (5) for pumping construction and / or viscous material, - a hydraulic pump train (6) which is drive-connected or drive-connectable to the output (4) of the automated transmission device (3) in order to generate a volume flow (VH) of hydraulic fluid for hydraulically driving the construction and / or viscous material pumping device (5); wherein the method comprises the steps: Specifying a setpoint for the volume flow rate (VH) of hydraulic fluid or for a quantity dependent on the volume flow rate (VH), and automatically adjusting the gear ratio (i, i1-i10) of the automated transmission device (3) so that the output speed (NO) is controlled as a function of the setpoint.

2. Method according to the preceding claim, - wherein the automated transmission device (3) has a plurality of automatically selectable gear stages (G1-G10) with different gear ratios (i, i 1-i10) for the transmission, - whereby the currently selected gear stage (G1-G10) is taken into account when automatically adjusting the gear ratio (i, i1-i10).

3. Method according to any one of the preceding claims, - wherein the hydraulic pump train (6) comprises a number of hydraulic pumps (8), - wherein at least one, in particular each, of the hydraulic pumps (8) is designed as a swivel pump (9) with a variably adjustable swivel angle (a), wherein the volume flow rate (VH) of hydraulic fluid that can be generated by each swivel pump (9) depends on the set swivel angle (a), - where the set swivel angle (a) is taken into account when automatically adjusting the translation ratio (i, i1-i10).

4. Method according to the preceding claim, - wherein the hydraulic pump train (6) has a predetermined minimum speed (NP), - wherein the volume flow rate (VH) is adjusted, in particular only, by variably adjusting a swivel angle (a) of at least one hydraulic pump (8) of the hydraulic pump train (6), as long as the output speed (NO) corresponds to the minimum speed (NP), in particular substantially.

5. Method according to the preceding claim, - wherein a change in the transmission ratio (i, i1-i10) only takes place when the at least one hydraulic pump (8) designed as a swivel pump (9) is fully swivelled out.

6. Method according to any one of the preceding claims, - where the drive speed (NI) is taken into account when automatically adjusting the transmission ratio (i, i1-i10).

7. Method according to any one of the preceding claims, - wherein the automatic adjustment of the transmission ratio (i, i1-i10) is carried out such that the drive speed (NI) is increased when a predetermined drive torque limit of the drive motor (2) is reached.

8. Method according to any one of the preceding claims, - wherein a change in the transmission ratio (i, i1- i10) is effected by changing a gear stage (G1-G10) of the automated transmission device (3) depending on a movement of at least one conveying piston (14) of the construction and / or thick material pumping device (5), in particular when at least one conveying piston (14) of the construction and / or thick material pumping device (5) is at rest, in particular to reverse its movement.

9. Method according to any one of the preceding claims, - wherein the truck-mounted concrete pump (1) has a hydraulically driven agitator (7) for mixing the construction and / or viscous material before its conveyance by means of the construction and / or viscous material pumping device (5), in particular wherein a rotational speed of the agitator (7) is adjusted by changing the volume flow rate (VH).

10. Method according to the preceding claim, - wherein the hydraulic pump train (6) comprises at least two further hydraulic pumps (8) for hydraulically driving the agitator (7), - whereby switching is performed between these two additional hydraulic pumps (8) for the hydraulic drive of the agitator (7) depending on the output speed (NO).

11. Method according to any of the preceding claims, - wherein the automated transmission device (3) is a vehicle transmission device (15) of the truck-mounted concrete pump (1).

12. Method according to any one of the preceding claims, - wherein the truck-mounted concrete pump (1) has a distribution gear unit (10) for connecting the hydraulic pump train (6) and / or a drive axle (11) of the truck-mounted concrete pump (1) to the drive motor (2), in particular by means of a vehicle transmission unit (15) of the truck-mounted concrete pump (1), in particular wherein the distribution gear unit (10) either has a constant transmission ratio (iV) or is the automated transmission unit (3).

13. Method according to any one of the preceding claims, - wherein the drive motor (2) comprises and / or is an internal combustion engine, in particular in the form of a diesel engine.

14. Truck-mounted concrete pump (1) for pumping construction and / or thick material, - wherein the truck-mounted concrete pump (1) is designed for operation according to a method according to one of the preceding claims, - wherein the truck-mounted concrete pump (1) has a transmission control device (12) for controlling the transmission device (3) and a hydraulic pump control device (13) for controlling the hydraulic pump train (6), - wherein the transmission control device (12) and the hydraulic pump control device (13) are interconnected and coordinated and / or designed and / or programmed for carrying out the procedure.

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