Abstract: The invention related to a concrete-pump boom-arm segment having an upper chord (33), a lower chord (34) and two lateral parts (35, 36) which connect the upper chord (33) and the lower chord (34). The boom-arm segment comprises a longitudinal connection (44) between two subregions (41, 42) of the boom-arm segment which adjoin one another in the longitudinal direction, wherein the longitudinal connection (44) extends over a chord portion (56, 66) and over a lateral part portion (53, 63). The lateral part portion (53, 63) is bent over with respect to the chord portion (56, 66) in the first subregion (41) and in the second subregion (42). The material thickness of the chord portion (56) is greater in the first subregion (41) than the material thickness of the chord portion (66) in the second subregion (42). The invention additionally relates to a method for producing such a boom-arm segment.

Abstract: The invention discloses, inter alia, a thick matter conveying system (10), comprising a thick matter pump (16) for conveying thick matter, a thick matter distributor boom (18) for distributing the thick matter to be conveyed, the thick matter distributor boom (18) having a boom arrangement (40) comprising at least two boom arms (41), a substructure (30) on which the thick matter distributor boom (18) and the thick matter pump (16) are arranged, the substructure (30) comprising a supporting structure (31) for supporting the substructure (30) having at least one horizontally and/or vertically movable supporting leg (32), the supporting structure (31) having a stability region with a re-securing threshold and with an upper limit defined by a maximum stability parameter, and the at least one supporting leg (32) being able to be re-secured, a receiving unit (11) for receiving at least one item of operating information, a processing unit (12) for determining a stability parameter of the thick matter conveying syste

Abstract: A boom-arm segment for a concrete pump, having an upper chord (33), a lower chord (34) and two side parts (35, 36) connecting the upper chord (33) and the lower chord (34), the side parts (35, 36) each comprising a lower edge portion (43) adjacent to the lower chord (34) and a central portion (44) arranged between the lower edge portion (43) and the upper chord (33). The central portions (44) are at a greater distance from one another than the lower edge portions (43). The boom-arm segment (30) comprises an articulation connection (37) with an articulation surface (12) which defines a pivot axis (74) for a pivot connection between the boom-arm segment (21) and an adjacent structure (20), the articulation surface (12) being at least partially arranged below the plane (63) of the lower chord (34).

Abstract: Disclosed is, inter alia, a thick matter distributor mast (18) for distributing a thick matter to be conveyed by means of a thick matter pump (16), having a slewing gear (19) which can be rotated around a vertical axis at a maximum rotating speed; a mast assembly (40) having at least a first mast arm (41) and a second mast arm (42), wherein the first mast arm (41) is connected to the slewing gear (19) at a proximal end of the mast assembly (40), and wherein the mast arms (41, 42) each have a maximum operating range; a conveying line (17) which extends across the mast assembly (40) and comprises a proximal end, which is connectable to an outlet (28) of a thick matter pump, and a distal end, wherein the distal end of the conveying line (17) transitions to an end hose (45) at a distal end of the mast assembly (40); a receiver unit (11) for receiving at least one item of operational information; a processing unit (12) for determining a currently permissible operating range of the first mast arm (41) and the secon

Abstract: The invention relates to a boom-arm segment, comprising an upper chord (33), a lower chord (34) and two side parts (35, 36) connecting the upper chord (33) and the lower chord (34).

Abstract: The invention relates to a boom-arm segment fora concrete pump, wherein the boom-arm segment (30) comprises a side part (35, 36)-which extends between a top chord (33) and a bottom chord (34) of the boom-arm segment (30). In the side part (35, 36), a bent portion is formed such that a first portion (42, 43) of the side part (35, 36) has a lateral offset (56) relative to a second portion (44) of the side part (35, 36). A transition portion (45, 46) forms a connection between the first portion (42, 43) and the second portion (44). The boom-arm segment (30) comprises a reinforcement part (40, 50), the material thickness of which spans the lateral offset (56) between the first portion (42, 43) and the second portion (44). The reinforcement part (40, 50) is butt-joined to the transition portion (45, 46). The invention also relates to a method for producing a boom-arm segment (30).

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.

Abstract: A distribution boom for a concrete pump comprises at least a first and a second boom arm, wherein the first and the second boom arm are connected to one another via a joint and are pivotable relative to one another via the joint about a pivot axis, and a concrete delivery line is provided along the boom arms. The joint connects the first and the second boom arm offset to one another so that the load-bearing structures of each of the two boom arms intersect a separating plane running perpendicular to the pivot axis between the first and the second boom arm only in the joint, wherein a hydraulic cylinder is arranged on one boom arm and connected to the other boom arm via coupling rods so that the two boom arms can be pivoted relative to one another by the hydraulic cylinder about the pivot axis of the joint.

Abstract: A pipeline for conveying concrete determines a pressure in and/or a wall thickness of the pipeline, wherein a first length portion of the pipeline has a first wall thickness and a second length portion of the pipeline has a second wall thickness greater than the first wall thickness. The determination is made using a first strain gauge on an outer side of the first length portion and a second strain gauge on an outer side of the second length portion, wherein the strain gauges are each fixedly applied to the outer side of the length portions. A strain gauge and/or the second longitudinal section of the pipeline are/is at a spacing from at least one end of the pipeline, which spacing corresponds to at least an internal diameter of the pipeline. By comparing strain gauge measurements, the wall thickness is determinable.

Abstract: The invention relates to, inter alia, a thick matter conveying system (10) comprising a thick matter pump (16) for conveying a thick matter; a thick matter distributing mast (18) for distributing the thick matter to be conveyed, said thick matter distributing mast (18) having a rotary mechanism (19) which can be rotated about a vertical axis and a mast assembly (40) comprising at least two mast arms (41); a substructure (30) on which the thick matter distributing mast (18) and the thick matter pump (16) are arranged, said substructure (30) comprising a support structure (31) for supporting the substructure (30) by means of at least one horizontally and/or vertically movable support leg (32); a sensor unit (11) comprising at least one sensor for detecting a piece of operating information; and a processing unit (12) for determining a stability parameter of the thick matter conveying system (10) on the basis of the at least one detected piece of operating information and for ascertaining an intended operation of

Abstract: The invention relates to, inter alia, a thick matter conveying system (10) comprising a thick matter pump (16) for conveying a thick matter; a thick matter distributing mast (18) for distributing the thick matter to be conveyed, said thick matter distributing mast (18) having a rotary mechanism (19) which can be rotated about a vertical axis and a mast assembly (40) comprising at least two mast arms (41); a substructure (30) on which the thick matter distributing mast (18) and the thick matter pump (16) are arranged, said substructure (30) comprising a support structure (31) for supporting the substructure (30) by means of at least one horizontally and/or vertically movable support leg (32); a sensor unit (11) comprising a plurality of sensors (111, 112, 113, 114, 115) for detecting a respective piece of operating information, wherein the sensor unit (11) is at least designed to detect a first piece of operating information which indicates the position of the rotary mechanism (19), a second piece of operating

Abstract: The invention relates to, inter alia, a thick matter conveying system (10) comprising a thick matter pump (16) for conveying a thick matter, comprising a double-piston-type core pump (15) which has a pump frequency; an S tube (24) which can be switched by the pump frequency; and a thick matter distributing mast (18) for distributing the thick matter to be conveyed, wherein the thick matter distributing mast (18) has at least two mast arms (41); a substructure (30) on which the thick matter distributing mast (18) and the thick matter pump (16) are arranged, said substructure (30) comprising a support structure (31) for supporting the substructure (30) by means of at least one horizontally and/or vertically movable support leg (32); a sensor unit (11) for sequentially detecting at least one piece of operating information at at least one first and second point in time; and a processing unit (12) which is designed to determine a stability parameter of the thick matter conveying system (10) on the basis of the at

Abstract: The invention relates to a boom-arm segment fora concrete pump, wherein the boom-arm segment (30) comprises a side part (35, 36)-which extends between a top chord (33) and a bottom chord (34) of the boom-arm segment (30). In the side part (35, 36), a bent portion is formed such that a first portion (42, 43) of the side part (35, 36) has a lateral offset (56) relative to a second portion (44) of the side part (35, 36). A transition portion (45, 46) forms a connection between the first portion (42, 43) and the second portion (44). The boom-arm segment (30) comprises a reinforcement part (40, 50), the material thickness of which spans the lateral offset (56) between the first portion (42, 43) and the second portion (44). The reinforcement part (40, 50) is butt-joined to the transition portion (45, 46). The invention also relates to a method for producing a boom-arm segment (30).

Abstract: The invention relates to a boom arm for mobile concrete pumps and to a mobile concrete pump. The boom arm, having a first and second end, wherein at least one elbowed section, in which the main bending loads which occur during proper use act as torsional loads, is provided between the first and the second end of the boom arm, is made from a fiber composite material, wherein beyond the elbowed region the height of the boom arm in cross-section is greater than the width of the boom arm in cross-section and in the elbowed region the width of the boom arm in cross-section is greater than or equal to the height of the boom arm in cross-section. A concrete pump with a placing boom, arranged on a substructure, comprising at least two boom arms, at least one of which is designed according to the invention.

Abstract: A boom system for a concrete-delivery device includes a plurality of booms which are pivotably interconnected. At least one of the booms has a recess along its length, the recess configured to at least partially receive an adjacent boom when the boom system. is in a retracted position. Side walls of the boom are extended to define the recess in the form of a channel. The recess may have a depth greater than or equal to a height of the adjacent boom so that the adjacent boom is received within the recess when the boom system is in the retracted position. Alternatively, the recess may have a depth less than a height of the adjacent boom so that the adjacent boom is only partially received in the recess when the boom system is in the retracted position.

Abstract: A pipeline for conveying concrete determines a pressure in and/or a wall thickness of the pipeline, wherein a first length portion of the pipeline has a first wall thickness and a second length portion of the pipeline has a second wall thickness greater than the first wall thickness. The determination is made using a first strain gauge on an outer side of the first length portion and a second strain gauge on an outer side of the second length portion, wherein the strain gauges are each fixedly applied to the outer side of the length portions. By comparison of the measurements at the two strain gauges, it is possible to determine a wall thickness by determining a strain of the pipeline owing to a decrease in the wall thickness.

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.

Abstract: The invention related to a concrete-pump boom-arm segment having an upper chord (33), a lower chord (34) and two lateral parts (35, 36) which connect the upper chord (33) and the lower chord (34). The boom-arm segment comprises a longitudinal connection (44) between two subregions (41, 42) of the boom-arm segment which adjoin one another in the longitudinal direction, wherein the longitudinal connection (44) extends over a chord portion (56, 66) and over a lateral part portion (53, 63). The lateral part portion (53, 63) is bent over with respect to the chord portion (56, 66) in the first subregion (41) and in the second subregion (42). The material thickness of the chord portion (56) is greater in the first subregion (41) than the material thickness of the chord portion (66) in the second subregion (42). The invention additionally relates to a method for producing such a boom-arm segment.

Abstract: A distribution boom for a concrete pump comprises at least a first and a second boom arm, wherein the first and the second boom arm are connected to one another via a joint and are pivotable relative to one another via the joint about a pivot axis, and a concrete delivery line is provided along the boom arms. The joint connects the first and the second boom arm offset to one another so that the load-bearing structures of each of the two boom arms intersect a separating plane running perpendicular to the pivot axis between the first and the second boom arm only in the joint, wherein a hydraulic cylinder is arranged on one boom arm and connected to the other boom arm via coupling rods so that the two boom arms can be pivoted relative to one another by the hydraulic cylinder about the pivot axis of the joint.

Abstract: The invention relates to a boom arm for mobile concrete pumps and to a mobile concrete pump. The boom arm, having a first and second end, wherein at least one elbowed section, in which the main bending loads which occur during proper use act as torsional loads, is provided between the first and the second end of the boom arm, is made from a fiber composite material, wherein beyond the elbowed region the height of the boom arm in cross-section is greater than the width of the boom arm in cross-section and in the elbowed region the width of the boom arm in cross-section is greater than or equal to the height of the boom arm in cross-section. A concrete pump with a placing boom, arranged on a substructure, comprising at least two boom arms, at least one of which is designed according to the invention.