Large manipulator, especially for self-propelled concrete pumps

Details Large manipulator, especially for self-propelled concrete pumps Large manipulator, especially for self-propelled concrete pumps

1995-08-25

1997-06-24

Chambers, A. Michael

Fluid handling

Systems

Articulated or swinging flow conduit

91361, B65Q 5300, G65G 5332, G65G 5366

Patent

active

056409966

DESCRIPTION:

BRIEF SUMMARY
FIELD OF THE INVENTION

The invention relates to a large manipulator, especially for truck mounted concrete pumps, comprising a mast arranged on a frame, preferably on a chassis, so as to be drivable about an essentially vertical axis by means of a driving system, comprising an articulated mast preferably designed as a concrete-distribution mast and composed of at least three mast arms, which mast arms are limited pivotally about each of the horizontal axes, which are parallel to one another, relative to the respective adjacent mast base or mast arm each by means of one further driving system, and comprising a remote-control device having at least one control lever for controlling the driving systems, whereby the control lever can be adjusted forwardly and backwardly along two main-position paths, which are perpendicular to one another, and whereby the remote-control device has a computer-assisted coordinate transmitter for the driving systems, which coordinate transmitter can be controlled through the control lever.


BACKGROUND OF THE INVENTION

Truck mounted concrete pumps of this type are mobile tools, which can be utilized with a full 360.degree.-swing range of the mast base with the articulated mast at an extended horizontal position. The operator is responsible for controlling the self-propelled concrete pump and for the positioning of the concrete end hose at the last arm of the articulated mast. He must thereby control more than two rotatoric degrees of freedom of the articulated mast through the associated driving systems during the movement of the articulated mast in the nonstructured three-dimensional work space while paying attention to the conditions at the edge of the building site. With the use of proportional radio telecontrols the operator's work was made easier in such a manner that the operator is no longer linked with a cable spacially to the self-propelled concrete pump. However, there exists furthermore the risk that uncontrolled movements at the end hose can occur during a single-axis operation, thus endangering the building site personnel. To make handling of the large manipulator easier, instead of the individual control of the rotatoric degrees of freedom of the articulated mast it has already been suggested to move the end hose through suitable computer-assistance in a Cartesian x-, y-, z-coordinate system with the help of control levers, whereby a frame-fixed or building-site-fixed coordinate system can be selectively chosen. ("Computer Controlled Concrete Distribution", Dr. -Ing. Hartmut Benckert, Putzmeister-Werk, Pages 111-119, 8th Int. Symposium on Automation and Robotics, IPA (FHG) Stuttgart 1991). However, this type of operation has proven to be rather complicated in many cases since the operation of the control levers needed for this cannot be easily brought into harmony with the optically recognizable sequences of movement of the articulated mast.
Starting out from this the basic purpose of the invention is to improve the conventional large manipulator of the above-disclosed type in such a manner that it will be possible for the operator to control any points in the area within the reach of the articulated mast by simple manipulations of the operating elements.


SUMMARY OF THE INVENTION

The invention starts out from the recognition that by a common control of the redundant articulated axes of the articulated mast independent of the axis of rotation of the mast base with one single adjusting operation of the control lever, an extending or collapsing movement of the articulated mast, which movement is clear to the operator, can be carried out at a pregiven height of the tip of the articulated mast. In order to achieve this, it is suggested according to the invention that the driving systems of the axes can be operated through the coordinate transmitter in the one main-position path of the control lever independent of the driving system of the pivot of the mast base while carrying out an extending or collapsing movement of the articulated mast at a pregiven height of the

REFERENCES:
patent: 3685543 (1972-08-01), Schwing et al.
patent: 3970830 (1976-07-01), White et al.
patent: 4205308 (1980-05-01), Haley et al.
patent: 4276975 (1981-07-01), Jenkins
patent: 4643074 (1987-02-01), Gunda et al.
patent: 4896582 (1990-01-01), Tordenmalm et al.
patent: 5189940 (1993-03-01), Hosseini et al.
patent: 5333533 (1994-08-01), Hosseini
Entwicklung der Antriebshydraulik fur mobile Betonverteilermaste by H. Benckert & H. Renz; O +P Olhydraulik und Pneumatik, 36, 1992, Nr. 4; pp. 242-244, 247, 248, 251.
Hochflexibles Arbeitsgerat von Putzmeister; ATZ Automobiltechnische Zeitschrift 92, 1990, 1; p. 36.

Affiliated with

Also associated with

Rating

Large manipulator, especially for self-propelled concrete pumps does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Large manipulator, especially for self-propelled concrete pumps, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Large manipulator, especially for self-propelled concrete pumps will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-145233