Truck-mounted concrete pump and method for operating same

Patent metadata

Field	Value
Publication number	US-10099660-B2
Application number	US-201715416780-A
Country	US
Kind code	B2
Filing date	Jan 26, 2017
Priority date	Jul 30, 2014
Publication date	Oct 16, 2018
Grant date	Oct 16, 2018

Abstract

This disclosure relates to a truck-mounted concrete pump comprising a concrete-distributing boom which is constituted by a plurality of folding boom arms and rotationally mounted on a slewing gear on a chassis, and a tilt sensor for detecting a tilt of the truck-mounted concrete pump. According to this disclosure, the truck-mounted concrete pump is provided with a safety device which restricts the operating range of the concrete-distributing boom subject to a tilt of the pump, said safety device being coupled to the tilt sensor. The safety device is designed to limit the slewing motion on the slewing gear and/or the swiveling motion of at least one boom arm.

First claim

What is claimed is:

1. A method for operating a truck-mounted concrete pump on the chassis of which a concrete-distributing boom having a plurality of swivelable boom arms is rotatably arranged on a slewing gear, the method comprising the following steps:
a) supporting the chassis at a work location by at least three extendable support arms;
b) determining the inclination of the truck-mounted concrete pump;
c) restricting the operating range of the concrete-distributing boom by limiting the rotational movement at the slewing gear and/or the swiveling movement of at least one boom arm as a function of the inclination;
d) wherein a slope defined by support legs of the extendable support arms is considered in order to avoid overstressing.

2. The method as claimed in claim 1 , wherein the operating range is restricted according to the varying position of the center of gravity of the truck-mounted concrete pump resulting from the movement of the concrete-distributing boom such that the center of gravity remains within the tipping limits of the truck-mounted concrete pump.

3. The method as claimed in claim 1 , wherein the operating range is restricted according to the support configuration of the extendable support arms.

4. The method as claimed in claim 1 , wherein the detected inclination of the truck-mounted concrete pump is compared to a predetermined limit value and the operating range is restricted upon exceeding the limit value.

5. The method as claimed in claim 1 , wherein the inclination of the truck-mounted concrete pump is detected by a vehicle-mounted tilt sensor.

6. The method as claimed in claim 1 , wherein tilt of the vehicle vertical axis of the truck-mounted concrete pump relative to the axis of gravity and/or to the terrain surface at the work location is detected.

7. The method as claimed in claim 1 , wherein a tilt angle of the truck-mounted concrete pump is detected by a single tilt sensor before and after the vehicle has been supported at the work location.

8. The method as claimed in claim 1 , wherein horizontal reach of the concrete-distributing boom is increasingly limited with increasing inclination of the truck-mounted concrete pump.

9. The method as claimed in claim 1 , wherein the operating range of the concrete-distributing boom is restricted by setting the swiveled position of a first one of the first boom arms on the slewing gear at a predetermined angle.

10. The method as claimed in claim 1 , wherein the operating range of the concrete-distributing boom is restricted by limiting the swiveling range of a first on of the first boom arms with respect to horizontal.

11. The method as claimed in claim 1 , wherein the three-dimensional orientation of the truck-mounted concrete pump is detected and the operating range of the concrete-distributing boom is restricted in an orientation-dependent manner.

12. The method as claimed in claim 11 , wherein the restriction comprises limiting the rotational range at the slewing gear.

13. The method as claimed in claim 1 , wherein the instantaneously possible reach of the concrete-distributing boom is displayed to an operator via a display device.

14. The method as claimed in claim 1 , wherein movement of the concrete-distributing boom is automatically stopped upon reaching a limit of the operating range.

15. The method as claimed in claim 1 , wherein velocities and/or accelerations of the movement of the slewing gear or of the boom arms are restricted as a function of the inclination.

16. A truck-mounted concrete pump, comprising:
a concrete-distributing boom having a plurality of swivelable boom arms rotatably arranged on a slewing gear on a chassis;
at least three support arms configured for supporting the chassis;
a tilt sensor configured for detecting an inclination of the truck-mounted concrete pump;
a system coupled to the tilt sensor for restricting the operating range of the concrete-distributing boom as a function of the inclination, wherein the system is configured to limit rotational movement at the slewing gear and/or swiveling movement of at least one of the boom arms and to consider a slope defined by support legs of the extendable extendable support arms within defined limits to avoid overstressing.

Assignees

• Putzmeister Engineering Gmbh

Inventors

• Mayer Martin
• Kaupp Jens
• Jahn Dirk

Classifications

• E04G21/0436

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

• B60S9/02 Primary

  for only lifting or supporting · CPC title

• B66C23/905 Primary

  electrical · CPC title

• E04G21/0445

  with booms · CPC title

• E04G21/0463 Primary

  with boom control mechanisms, e.g. to automate concrete distribution · CPC title