Mobile concrete pump and method for stabilization-relevant control of a mobile concrete pump

Patent metadata

Field	Value
Publication number	US-12024906-B2
Application number	US-201916981517-A
Country	US
Kind code	B2
Filing date	Mar 15, 2019
Priority date	Mar 16, 2018
Publication date	Jul 2, 2024
Grant date	Jul 2, 2024

Abstract

The invention relates to a mobile concrete pump (10) having a chassis (12) which has extendable supporting legs (14), and a concrete distributor mast (18), which is arranged on a slewing mechanism (16) of the chassis (12) such that the concrete distributor mast can be slewed and the inclination thereof can be adjusted by means of an actuating cylinder (22), and which comprises multiple pivotable mast arms (20), and a computing unit for carrying out a stabilization calculation by using the vertical and/or horizontal forces on at least two supporting legs (14), and having a control device which is configured, depending on stability check, to delimit a slewing movement on the slewing mechanism (16) and/or a pivoting movement of at least one mast arm (20.1, 20.2 20.3) and/or the initiation of a pumping operation.

First claim

The invention claimed is:

1. A mobile concrete pump having
a chassis having extendable support legs, and
a concrete distributor mast, which is rotatable and adjustable in inclination by means of a positioning cylinder on a rotating mechanism of the chassis, and which comprises multiple pivotable mast arms,
and a processing unit to carry out a stability calculation incorporating vertical and/or horizontal forces on at least two of the extendable support legs, and having
a control unit, which is configured to limit the initiation of a pumping procedure in dependence on the stability calculation, and having sensors for detecting vertical and/or horizontal forces on the at least two extendable support legs, wherein the stability calculation is carried out on the basis of a load torque and the measured vertical and/or horizontal forces.

2. A mobile concrete pump comprising:
a chassis having extendable support legs, at least two of the extendable support legs having support points;
a concrete distributor mast, which is rotatable and adjustable in inclination by means of a positioning cylinder on a rotating mechanism of the chassis, and which comprises multiple pivotable mast arms;
a support sensor system (SB) for detecting a position of the support points of the at least two extendable support legs;
inclination sensors (SN) for detecting the inclination of the chassis around two axes;
a cylinder pressure sensor (SZ) for detecting a pressure in the positioning cylinder;
a rotational angle sensor (SD) for detecting a rotational angle of the rotating mechanism; and
a processing unit to carry out a stability calculation and having a control unit which limits one for more of a rotational movement on the rotating mechanism, a pivot movement of at least one of the pivotable mast arms, and the initiation of a pumping procedure in dependence on the stability calculation,
wherein the stability calculation is carried out on the basis of a load torque and a calculation of the vertical and/or horizontal forces on the at least two extendable support legs based on the position of the support legs, the inclination of the chassis, the pressure in the positioning cylinder, and the rotational angle of the rotating mechanism.

3. The mobile concrete pump of claim 1 , in which a calculation is performed of a fraction of vertical forces which are dissipated only via the at least two extendable support legs.

4. The mobile concrete pump of claim 1 , in which a check is performed of the load of the at least two extendable support legs by calculating a comparison degree of utilization incorporating transverse forces acting on the at least two extendable support legs.

5. The mobile concrete pump of claim 1 , in which in particular in the case of a setup having an inclination of the chassis by greater than 3°, calculation of a torque required for rotating the concrete distributor mast and a comparison of said torque to a boom torque is performed.

6. The mobile concrete pump of claim 1 , which furthermore comprises a user interface, via which a display is performed as to whether a pumping procedure can be initiated in a given mast position.

7. The mobile concrete pump of claim 2 , in which a load torque is calculated from the cylinder pressure.

8. A method for the stabilization-relevant control of a mobile concrete pump having a chassis having extendable support legs and on which a concrete distributor mast formed from multiple pivotable mast arms is arranged so it is rotatable on a rotating mechanism and is adjustable in inclination by means of a positioning cylinder,
in which initiation of a pumping procedure is limited in dependence on a stability calculation incorporating vertical and/or horizontal forces on at least two of the extendable support legs
wherein a stability calculation is carried out on the basis of a load torque and on the basis of values of vertical and/or horizontal forces on the at least two extendable support legs measured by a support sensor system (SB).

9. The method of claim 8 , in which the stability calculation is carried out on the basis of a calculated load torque.

10. The method of claim 8 , in which the support sensor system (SB) detects support points of the at least two extendable support legs, a calculation of the vertical and/or horizontal forces on at the least two extendable support legs is carried out from measured values of the support points of the at least two extendable support legs, inclination sensors (SN) for detecting an inclination of the chassis around two axes, a sensor (SZ) for detecting a pressure in the positioning cylinder (cylinder pressure sensor), and/or a rotational angle sensor (SD) for detecting a rotational angle of the rotating mechanism.

11. The method of claim 8 , in which it is displayed via a user interface whether a pumping procedure can be initiated in a given mast position.

12. The method of claim 9 , in which the load torque is calculated from a pressure in the positioning cylinder.

13. The method of claim 8 , in which a fraction is calculated of vertical forces which are dissipated only via the at least two extendable support legs.

14. The method of claim 8 , in which to check a load of the support legs, a comparison degree of utilization is calculated based on the transverse forces acting on the at least two extendable support legs.

15. The method of claim 8 , in which in the case of a setup having an inclination of the chassis by greater than 3°, a torque required for rotating the concrete distributor mast is calculated and compared to a boom torque.

16. A non-transitory computer readable medium comprising instructions to carry out the method of claim 8 when the instructions are executed on a computer, a processor, or a corresponding processing unit of a mobile concrete pump.

17. A mobile concrete pump comprising:
a chassis having extendable support legs;
a concrete distributor mast, which is rotatable and adjustable in inclination by a positioning cylinder on a rotating mechanism of the chassis, and which comprises multiple pivotable mast arms;
a processing unit to carry out a stability calculation on the basis of vertical and/or horizontal forces on at least two of the extendable support legs; and
a control unit configured to limit a rotational movement of the rotating mechanism and/or a pivot movement of at least one mast arm and/or the initiation of a pumping procedure in dependence on the stability check,
wherein the processing unit calculates a theoretical maximum load torque with a present mast position and inclination of the chassis.

18. A method for the stabilization-relevant control of a mobile concrete pump comprising:
a chassis having extendable support legs;
a concrete distributor mast formed from multiple pivotable mast arms rotatable on a rotating mechanism connected to the chassis, said concrete distributor mast adjustable in inclination by a positioning cylinder,
in which a rotational movement of the rotating mechanism and/or a pivot movement of at least one mast arm and/or initiation of a pumping procedure is limited in dependence on a stability calculation performed on the basis of vertical and/or horizontal forces on at least two of the extendable support legs, in which a theoretical maximum torque is calculated with a present mast position and inclination of the chassis.

19. A non-transitory computer readable medium comprising instructions to carry out the method of claim 18 when the instructions are executed on a computer, a processor, or a corresponding proc

Assignees

• Putzmeister Engineering Gmbh

Inventors

• Müller Ansgar

Classifications

• E04G21/0445

  with booms · CPC title

• B66C23/94

  for limiting slewing movements · CPC title

• B66C23/905

  electrical · CPC title

• B66C23/78

  Supports, e.g. outriggers, for mobile cranes · CPC title

• E04G21/0436 Primary

  on a mobile support, e.g. truck · CPC title