Concreting system for producing prefabricated concrete parts, and method for operating a concreting system

Abstract

The invention relates to a concreting system for producing prefabricated concrete parts, comprising a plurality of delivery line portions (31, 32, 33, 34, 35) which together form a delivery line (28) extending between a proximal end (11) and a distal end (12). A first delivery line portion (31) is suspended on a first support (21) via a first pivot joint (41), and a second delivery line portion (32) is suspended on a second support (22) via a second pivot joint (42). The first support (21) can be moved relative to the second support (22) in order to change the spacing between the proximal end (11) and the distal end (12) of the delivery line (28). The invention also relates to a method for operating a concreting system, wherein a discharge mechanism (36) is provided between the distal end (12) of the delivery line (28) and an outlet opening (47), said discharge mechanism (36) being designed to change the position of the outlet opening (47) relative to the distal end (12) of the delivery line (28), and the discharge mechanism (36) is designed to move the outlet opening (47) relative to the distal end (12) of the delivery line (28) such that the movement of the outlet opening (47) involves a movement in the transverse direction (40).

Description

CONCRETE SYSTEM FOR THE MANUFACTURING OF PRECAST CONCRETE ELEMENTS AND METHOD FOR OPERATING A CONCRETE SYSTEM

[0001] The invention relates to a concreting system for the production of precast concrete elements and a method for operating a concreting system.

[0002] Precast concrete elements are typically manufactured in an assembly hall, where production can take place without being affected by weather conditions. The final use of the precast concrete element usually occurs at a location outside the assembly hall, to which it is transported.

[0003] Currently, concrete pumps are frequently used for the production of precast concrete elements. These pumps are mounted on a turntable in a central area of ​​the assembly hall. A height-adjustable boom on the pump allows liquid concrete to be dispensed to various areas of the hall for the production of precast elements. This method requires a significant amount of floor space for the concrete pump, which cannot then be used for the production of precast concrete elements. Alternative methods exist for manufacturing precast concrete elements. These include belt conveyors mounted on a similar turntable, which also require considerable floor space. With a so-called rotary distributor, support structures extend far outwards, which is mechanically complex.Bucket conveyors, which transport liquid concrete in batches and require a complex rail system, are also complex.

[0004] DE 10 2022 116 381 Al of fenbart a folding mast arm of a concrete pump for placing concrete in tunnel construction. The problem described therein, that a mast arm of a concrete pump must be retracted into a spatially confined area, does not arise in the generic production of precast concrete elements.

[0005] The invention is based on the objective of presenting a concrete placement system that reduces the aforementioned disadvantages. This objective is achieved by the features of the independent claims. Advantageous embodiments are specified in the dependent claims.

[0006] A concrete placement system according to the invention for producing precast concrete elements comprises a plurality of conveying line sections that together form a conveying line extending between a proximal end and a distal end. A first conveying line section is suspended from a first support via a first pivot joint, and a second conveying line section is suspended from a second support via a second pivot joint. The first support is movable in a longitudinal direction relative to the second support in order to change the distance between the proximal end and the distal end of the conveying line. A dispensing mechanism is arranged between the distal end of the conveying line and a discharge opening. The dispensing mechanism is designed to change the position of the discharge opening relative to the distal end of the conveying line.The discharge mechanism is designed to move the discharge opening relative to the distal end of the conveying line, so that the movement of the discharge opening includes a movement in the transverse direction.

[0007] The invention proposes a concreting system that can be used in an assembly hall without The assembly hall floor requires considerable space. The arrangement of beams and conveying pipe sections can be housed in an upper area of ​​the hall. The concreting system allows for a low overall height and can therefore be positioned, for example, near the hall ceiling. The mechanism of beams and conveying pipe sections can be designed so that the distal end of the conveying pipe can be moved while the height of the conveying pipe sections and beams remains unchanged. This allows for flexible use of the space on the floor of the assembly hall and thus an overall improvement in the hall's usability. By making the discharge opening movable in the transverse direction, a two-dimensional area is created within the assembly hall floor space into which liquid concrete can be poured.

[0008] The first conveying pipe section can be designed as a rigid section, so that it retains its geometric shape when the distance between the proximal and distal ends of the conveying pipe is changed. If the conveying pipe section has sufficient inherent stability, it can be attached directly to the first support, with the first pivot joint establishing a direct connection between the first support and the first conveying pipe section. Alternatively, a crossbeam can be provided, which absorbs the mechanical loads acting on the conveying pipe section. The first pivot joint can connect the first support to a first crossbeam. The first conveying pipe section can be connected to the first crossbeam via suitable retaining devices.The characteristics mentioned in connection with the first conveying line section can also be applied individually or in combination to the second conveying line section. The cut must be realized. In an alternative design, the conveying line has a flexible wall, and movements between the first conveying line section and the second conveying line section are accommodated by a deformation of the wall.

[0009] If the first conveying pipe section is coupled to the first support, the second conveying pipe section is coupled to the second support, and the conveying pipe sections are coupled to each other via a pipe joint, a forced coupling results, according to which the conveying pipe sections and the supports cannot be moved independently of each other. A change in the swivel angle between the first and second conveying pipe sections inevitably results in a change in the distance between the first and second supports.In one embodiment, the first conveying line section, the second conveying line section, the first support, and the second support are subject to a positive coupling such that a change in the angle between the first and second conveying line sections results in a linear movement of the first support and a linear relative movement of the second support. Such a positive coupling is known, for example, from a scissor-joint lifting platform.

[0010] In the case of a forced coupling encompassing all sections of a concrete delivery system, the distance between the proximal and distal ends of the delivery line can be determined from the position of a single support. If the position of the proximal end is known, the longitudinal position of the distal end can be deduced from the distance. Through the forced coupling, the position of the distal end of the delivery line can be directly determined from the position of the second support. This is advantageous for... to control and / or monitor the position of the outlet opening. If the position of a single carrier is known, only the position of the outlet opening relative to the distal end remains as a further parameter to be able to unambiguously determine the position of the outlet opening.

[0011] The first delivery pipe section can be connected to the second delivery pipe section via a pipe joint. A pipe joint is a device that connects two delivery pipe sections to form a continuous pipe. Liquid concrete can thus flow through the pipe joint between the first and second delivery pipe sections. Furthermore, the pipe joint allows the orientation of the first delivery pipe section relative to the second delivery pipe section to be changed. Therefore, the geometric shape of the delivery pipe can be altered via the pipe joint without deforming either of the delivery pipe sections. Each delivery pipe section can be rigid, with a fixed length between a proximal end and a distal end, and with a fixed direction between the two ends.

[0012] The pipe joint can define a pivot axis around which the first and second conveying pipe sections can pivot relative to each other. The pipe joint can be designed so that it does not allow any further degrees of freedom for movement between the first and second conveying pipe sections. The pivot axis can be oriented vertically. This makes it possible for the first and second conveying pipe sections to each perform a movement in a horizontal plane during a pivoting operation. The shape of the conveying pipe can be adapted to this. They can be modified in a way that doesn't require much vertical space.

[0013] The first pivot joint between the first support and the first conveying pipe section can define a vertical pivot axis. The first pivot joint can be designed such that it does not allow any further degrees of freedom for movements between the first conveying pipe section and the first support. The same can apply to the second pivot joint. In contrast to DE 10 2022 116 381, it is not necessary, in particular, that the pivot axis be displaceable relative to the associated support.

[0014] If the first conveying pipe section and the second conveying pipe section are connected to each other and to the supports via vertical pivot axes, the entire movement of the concreting system, which changes the shape of the conveying pipe, can take place within horizontal planes without requiring additional space in the vertical dimension.

[0015] The conveying line can fold or unfold like a scissor mechanism when the supports are moved longitudinally relative to each other. For the purposes of this invention, the conveying line refers to those sections of the conveying path that are folded or unfolded by a movement of the supports. Further sections of the conveying path can be connected to the proximal and distal ends of the conveying line. The conveying path as a whole can extend from a concrete pump to a discharge opening.

[0016] To keep bearing forces low, it is advantageous if the first pivot joint is located near the center of gravity of the first section of the conveying line. The distance The distance between the pivot axis of the first pivot joint and the center of gravity of the first conveying line section can be less than 10%, preferably less than 5%, and more preferably less than 2% of the length of the first conveying line section. In one embodiment, the pivot axis of the first pivot joint intersects the center of gravity of the first conveying line section. The same applies to the second conveying line section and the second pivot joint.

[0017] The concreting system can include a frame structure that supports the first beam and the second beam. The frame structure can have a first guide rail and a second guide rail spaced apart from each other. The first guide rail and the second guide rail can extend longitudinally. The first beam and the second beam can extend between the first guide rail and the second guide rail, bridging a gap between them. The first guide rail and the second guide rail can extend parallel to each other. Linear movement of the first beam can be achieved by moving the first beam relative to the first frame section and the second frame section.The frame device can extend in a horizontal plane, so that the height position of a beam supported by the frame device remains unchanged when the beam is moved relative to the frame device.

[0018] The transverse distance between the first guide rail and the second guide rail can correspond to at least 50%, preferably at least 80%, and more preferably at least 100% of the length of a conveying line section. If the conveying line sections differ in length, The specification refers to the longest of the conveying pipe sections. If the guide rails are widely spaced in the transverse direction, the conveying pipe sections can be completely accommodated between the guide rails in any position without protruding laterally beyond them. In many cases, this is helpful for efficient use of space within an assembly hall. Furthermore, if the guide rails are widely spaced in the transverse direction, it is possible to position supports between the hall floor and the guide rails without affecting the area of ​​the hall used for the production of precast concrete elements.

[0019] The concreting system can be designed such that the first beam can be moved relative to the frame device over a first travel range, and that the second beam can be moved relative to the frame device over a second travel range. In one embodiment, there is an overlap between the first and second travel ranges.

[0020] The concreting system can be designed such that the proximal end of the delivery line is in a fixed position relative to the frame device. The terms proximal and distal refer to the flow direction of the liquid concrete during normal operation of the concreting system, in which the liquid concrete is fed in at the proximal end of the delivery line and exits at the distal end of the delivery line to form the precast concrete element.

[0021] The proximal end of the first delivery line section can correspond to the proximal end of the delivery line. The supply of liquid concrete to the first delivery line section can be effected by means of a feed line located between a concrete pump and the proximal end of the first delivery line section. The concrete pump may include a pre-filling hopper from which the concrete pump draws the liquid concrete and delivers it towards the delivery line.

[0022] The liquid concrete can be fed into the pre-filling tank from an intermediate container. This intermediate container could, for example, be a bucket filled with liquid concrete that can be moved within the assembly hall using a crane. Alternatively, the liquid concrete can be fed directly from a concrete mixer truck. For this to work, it is advantageous if the pre-filling tank is positioned so that it can be accessed from outside the assembly hall. The liquid concrete can also be supplied directly from a mixing plant. The advantage of this is that different concrete qualities can be applied sequentially.

[0023] If the proximal end of the first delivery pipe section is in a fixed position relative to the frame device, the distal end of the second delivery pipe section moves as soon as the angle between the first and second delivery pipe sections changes. The concreting system can be configured so that the distal end of the second delivery pipe section undergoes a linear movement when the swivel angle changes. This linear movement can be parallel to the movement of the first and second supports. The movement of the first and second supports can also be linear. The distance traveled by the second support can be greater than the distance traveled by the first support. The distance traveled by the distal end of the second delivery pipe section can be greater than the distance traveled by the second support.

[0024] The concreting system can comprise more than two delivery line sections, in particular at least three delivery line sections, preferably at least five delivery line sections, and more preferably at least ten delivery line sections. Apart from the first delivery line section, which forms the proximal end of the delivery line, each delivery line section can be connected at its proximal end to a preceding delivery line section via a pipe joint. Each delivery line section can have the features that are apparent in connection with the first delivery line section and the second delivery line section, respectively. Each pair of two delivery line sections connected to each other via a pipe joint corresponds to a first delivery line section and a second delivery line section within the meaning of the invention.

[0025] The conveying line can extend from the proximal end of the first conveying line section to the distal end of a distal conveying line section, which forms the last conveying line section of the conveying line. Forced coupling can exist across all conveying line sections, so that all conveying line sections can only perform movement together. The distance traveled by a conveying line section can be greater the further it is from the proximal end of the conveying line. The movement of the conveying line sections can be driven by a single actuator. Alternatively, several actuators can be used, which are appropriately coordinated with each other.

[0026] At the distal end of the concreting system, an outlet opening can be formed from which the liquid concrete emerges to form the precast concrete element. Between the distal end of the distal delivery pipe section and the outlet... An outlet mechanism may be arranged at the opening. The outlet mechanism may be designed to change the position of the outlet opening relative to the distal end of the conveying line. The outlet mechanism may be designed so that it is not subject to any forced coupling with the conveying line, allowing the position of the outlet opening to be changed even if the position of the distal conveying line section remains unchanged.

[0027] The movement of the discharge end can include a movement in the transverse direction. The transverse direction is a horizontal direction that forms a right angle with the longitudinal direction, which corresponds to the direction of movement of the distal end of the conveying line. The angle between the direction of movement of the discharge end and the transverse direction can be less than 20°, preferably less than 10°, and more preferably less than 5°. In one embodiment, the dispensing mechanism is displaceable in a linear guide in the transverse direction. Movement of the dispensing mechanism along a curved path is also possible. The dispensing mechanism can be designed such that, additionally or alternatively, the height position of the discharge opening can be changed.

[0028] The dispensing mechanism can include a swivel arm with the discharge opening located at its distal end and its proximal end connected to the distal end of the delivery line via a pipe connection. A proximal end of the swivel arm can be directly connected to the distal end of the delivery line. Alternatively, one or more intermediate segments may be present between the proximal end of the swivel arm and the distal end of the delivery line, through which the liquid concrete passes on its way to the discharge opening. The concreting system can be designed so that the discharge opening can be moved into a position... which lies below an area enclosed between two supports.

[0029] The discharge opening can be formed on a flexible end tube. The end tube can be vertically oriented so that the liquid concrete falls through the end tube to the discharge opening. Alternatively, the discharge opening can be formed on a rigid component that is in a defined spatial relationship to the distal end of the delivery line. This is particularly suitable if the concreting system is intended to produce the precast concrete element using a 3D printing process. Conversely, a flexible end tube is more appropriate if the precast concrete element is produced in formwork.

[0030] The concrete pouring system can be equipped with a valve to prevent the flow of liquid concrete from the outlet. Such a valve makes it possible to precisely control the point at which the flow of liquid concrete begins or ends. If the outlet is located on a flexible end hose, the valve can be designed as a pinch valve that compresses the end hose when the valve is closed.

[0031] The concreting system can include a vibrator. The vibrator can be attached to the dispensing mechanism. A vibrator is a device used to compact fresh concrete. By incorporating the vibrator into the concreting system, the system can both dispense the fresh concrete and perform a subsequent work step. This enables efficient operation in the production of precast concrete elements.

[0032] The concreting system can include a control unit designed to manage the interaction of its components. The concreting system can include one or more position sensors that provide a measurement of the position of the discharge opening. In one implementation, the position is measured relative to the frame of the concreting system. The control unit can be designed to process the position measurements as input to generate control commands that actuate actuators of the concreting system. An actuator can be controlled to move one or more beams relative to the frame. Additionally or alternatively, an actuator of the dispensing mechanism can be controlled to change the position of the discharge opening relative to the distal end of the delivery line. Additionally or alternatively, the concrete pump can be started or stopped.

[0033] The invention also relates to an assembly hall equipped with such a concreting system. The concreting system can be operated within the assembly hall. The assembly hall can include a crane that can be moved in a horizontal plane without requiring any floor space. The crane can be located closer to the ceiling of the assembly hall than to the floor. The conveying line of the concreting system can be arranged in a vertical position above the crane.

[0034] A platform may be provided in the assembly hall from which maintenance work on the concrete pouring system can be carried out. The platform may be positioned at a height that allows access to the conveying line for a person standing on the platform. The platform may also be positioned so that the conveying line is accessible when it is on the shortest distance between the proximal end and the distal end is compressed.

[0035] The assembly hall can be a conventional assembly hall, which may have a fixed roof and fixed side walls. This also includes designs where the side walls and / or the roof consist entirely or partially of a tarpaulin-like material. Alternatively, the concrete pouring system can also be operated outdoors.

[0036] The invention also relates to a method for operating a concreting system, wherein the concreting system comprises a plurality of conveying line sections which together form a conveying line extending between a proximal end and a distal end. A first conveying line section is suspended from a first support via a first pivot joint. A second conveying line section is suspended from a second support via a second pivot joint. The first support is moved relative to the second support to change the distance between the proximal end and the distal end of the conveying line. A dispensing mechanism is arranged between the distal end of the conveying line and a discharge opening. The dispensing mechanism is actuated to move the discharge opening relative to the distal end of the conveying line such that the movement of the discharge opening includes a movement in the transverse direction.

[0037] The disclosure includes further developments of the method, which are described in connection with the concreting system according to the invention.

[0038] The invention is described below by way of example with reference to the accompanying drawings and advantageous embodiments. The drawings show: Fig. 1: an assembly hall with a concreting system according to the invention; Fig. 2: a schematic representation of the concreting system from Fig. 1 in a view from below; Fig. 3: a detail of an alternative embodiment of a concreting system according to the invention; Fig. 4: a detail of another embodiment of an inventive concreting system; Fig. 5: a schematic representation of the functioning of a concreting system according to the invention; Fig. 6: a detail of a concreting system according to the invention; Figs. 7, 8: the view according to Fig. 6 in an alternative embodiment of the invention; Fig. 9: the view according to Fig. 1 in an alternative view From the implementation form of the invention; Fig. 10: another detail of a concreting system according to the invention.

[0039] In an assembly hall 14, a frame 20 is mounted just below the roof 15, from which a plurality of beams 21, 22, 23, 24, 25 are suspended. According to Fig. 22, the frame 20 comprises parallel guide rails 66, 67 on which the beams 21-25 are moved in the longitudinal direction 30. can be . In a Cartesian coordinate system, in which the horizontal plane is spanned by the X-direction and the y-direction, the longitudinal direction 30 corresponds to the X-direction and the transverse direction 40 to the Y-direction .

[0040] The concreting system comprises a delivery line 28, which extends in the form of a closed pipe between a proximal end 11 and a distal end 12. The entire delivery route, extending from a concrete pump 16 to a discharge opening 45, includes, in addition to the delivery line 28, further sections along which the liquid concrete is conveyed. These include a supply line 68, which extends between the concrete pump 16 and the delivery line 28, and a distal section 69, which extends between the delivery line 28 and the discharge opening 47. An end of the delivery line 28 adjacent to the concrete pump 16 is referred to as the proximal end 11, and an end of the delivery line 28 adjacent to the discharge opening 47 is referred to as the distal end 12 of the delivery line 28.The concrete pump 16 draws liquid concrete from a pre-filling tank 17 located outside or inside the assembly hall 14 and conveys the liquid concrete along the conveying path so that the liquid concrete emerges from the discharge opening 47. The liquid concrete is used to produce precast concrete elements 18, two of which are shown schematically in Fig. 1.

[0041] Each of the supports 21-25 carries a conveying line section 31, 32, 33, 34, 35. Each of the conveying line sections 31-35 is suspended from a support 21-25 via a pivot joint 41, 42, 43, 44, 45. The pivot axis of each pivot joint 41-45 intersects the center of gravity of a conveying line section 31-35, thereby keeping the bearing forces acting on the pivot joints 41-45 low. This is illustrated in Fig. 6 using the example of the pivot axis 38 of the second pivot joint 42.

[0042] Figure 10 shows a pair of conveying line sections 32 and 33, consisting of a preceding conveying line section 32 and a subsequent conveying line section 33. A distal end 49 of the preceding conveying line section 32 is connected to a proximal end 48 of the subsequent conveying line section 33 via a pipe joint 29. The pipe joint 29 defines a vertical pivot axis 37 (Figure 6) about which the two conveying line sections 32 and 33 can be pivoted relative to each other. The pipe joint 29 forms a section of the conveying line 28, allowing liquid concrete to flow from the preceding conveying line section 32 through the pipe joint 29 into the subsequent conveying line section 33. The remaining conveying line sections are connected to each other in a corresponding manner.

[0043] The conveying pipe sections 31-35 together form a scissor mechanism 39, which allows the distance between the proximal and distal ends of the conveying pipe 28 to be changed. The pipe joints 29 and the pivot joints 41-45 create a positive coupling between the conveying pipe sections and the supports, so that the position of one conveying pipe section defines the position of all other conveying pipe sections and all supports. Since the proximal end of the conveying pipe 28 is in a fixed spatial relationship to the frame device 20, actuating the scissor-like mechanism 39 displaces the distal end 12 of the conveying pipe in the longitudinal direction 30. In this way, the outlet opening 47 of the conveying pipe 28 can be moved into an area of ​​the assembly hall 14 where a precast concrete element 18 is to be manufactured.

[0044] The concreting system includes a dispensing mechanism. 36 , with which the position of the outlet opening 47 relative to the distal end 12 of the conveying line 28 can be changed The position of the outlet opening 47 can be changed in the transverse direction 40. In the embodiment shown in Fig. 2, the dispensing mechanism 36 comprises a pivot arm 50, which is pivotably mounted about a vertical axis at the distal end 12 of the conveying line. An end hose 46 is attached to the distal end of the pivot arm 50, the lower end of which forms the outlet opening 47 of the conveying line 28.

[0045] By actuating the scissor mechanism 39 and the dispensing mechanism 36, the outlet opening 47 can be moved within the XY plane (longitudinal direction 30 and transverse direction 40) so that liquid concrete emerging from the outlet opening 47 is dispensed at a desired location. In particular, the swivel arm 50 makes it possible to dispense the liquid concrete into positions located below the supports 21-25. These possibilities are utilized with the concreting system according to the invention to dispense the liquid concrete in such a way as to produce the desired precast concrete element 18.

[0046] Figure 3 shows another embodiment of a dispensing mechanism 36. A first scissor arm 52 is connected to the distal end 12 of the conveying line 28 and is pivotably connected to a second scissor arm 53 via a joint 54. The conveying section extends through the first scissor arm 52 and the second scissor arm 53 to the end hose 46. The end hose 46 is suspended in a sliding guide 51, which allows the end hose 46 to be displaced in the transverse direction 40 relative to the support 25. When the end hose 46 is displaced, the scissor arms 52 and 53 pivot relative to each other and relative to the distal conveying line section 35, so that the distal end of the second scissor arm 53 can follow the movement of the end hose 46. With such a dispensing mechanism 36, the The concrete system uses the outlet opening 47 in the XY plane as a method to apply the liquid concrete in a desired area.

[0047] In the alternative embodiment shown in Fig. 4, the dispensing mechanism 36 is designed like a two-armed robot. The robot arm 55 comprises two arm segments that are pivotably suspended relative to each other and relative to a base. The robot arm 55 can be rotated about a pivot joint 56 relative to the distal support 25. In addition to positioning within the XY plane, the dispensing mechanism 36 from Fig. 4 also allows the position of the discharge opening 47 to be changed in the Z direction, i.e., in height. This feature can be particularly useful if the concreting system is designed to produce precast concrete elements using a 3D printing process. Precise shaping through 3D printing requires that the discharge opening can be moved in all three directions within space. Robots with more than two arms are also possible.

[0048] In another embodiment (not shown), two dispensing mechanisms 36 are connected to the distal end 12 of the conveying line 28. A distributor is formed between the conveying line 28 and the dispensing mechanisms 36, which distributes the conveyed liquid concrete to the two dispensing mechanisms 36. In this way, it becomes possible to dispense liquid concrete simultaneously at different locations via a common conveying line 28. In yet another embodiment (not shown), the dispensing mechanism comprises a distributor arm that is pivotably mounted about a horizontal axis at the distal end 12 of the conveying line. By pivoting the distributor arm about the horizontal axis, the height at which the liquid concrete exits the dispensing mechanism can be adjusted. This can be influenced by changing the drop height of the liquid concrete. The extent to which segregation of the liquid concrete occurs will be determined. A distribution mast with an additional second distribution arm is also possible. The second distribution arm can be pivoted around a horizontal axis and suspended from a distal end of the first distribution arm.

[0049] The concreting system, as shown in Fig. 5, includes a control unit 57 designed to control the interaction of the system's components. The control unit 57 can influence the position of the discharge opening 47 within the XY plane by controlling the scissor mechanism 39 and the dispensing mechanism 36 with appropriate control commands. Controlling the dispensing mechanism can also, if necessary, influence the position in the Z direction at which the liquid concrete exits the discharge opening 47. The control unit 57 processes as input measurements of the position of the discharge opening 47 relative to the frame 20, acquired by a position sensor 58.By processing 57 measured values ​​about the actual position of the outlet opening 47, the control unit can control the scissor mechanism 39 and the dispensing mechanism 36 within a closed control loop, which has the control objective of keeping the deviation between a predetermined target position and the measured actual position as small as possible at any given time.

[0050] The control unit 57 also controls the concrete pump 16, so that the liquid concrete exits the outlet opening 47 at the desired phases. Due to the vertical orientation of the end hose 46, simply stopping the concrete pump 16 cannot reliably prevent further liquid concrete from escaping. The concreting system therefore includes a [missing information - likely a component] located near the outlet opening 47. Valve 59, which in the closed state prevents the escape of liquid concrete from the outlet opening 47 and in the open state allows free passage of the liquid concrete. If the end hose 46 is sufficiently flexible, the valve 59 can be designed as a pinch valve.

[0051] The concreting system also includes a vibrator 60, which is likewise attached to the dispensing mechanism 36 and whose position can be adjusted by the scissor-like mechanism 39 and the dispensing mechanism 36 in a similar manner to the position of the discharge opening 47. A vibrator is a device used for compacting fresh concrete. Because the vibrator 60 is a component of the concreting system, the system can be used both to dispense the fresh concrete and to perform an immediately subsequent work step. This enables an efficient working method in the production of precast concrete elements.

[0052] There are several variations for the design of the scissor mechanism 39, which are illustrated in Figures 6-8 using the example of the second support 22 and the section of the conveying line 28 suspended from it. In the embodiment according to Figure 6, the conveying line section 32 is sufficiently rigid so that the conveying line sections 31-35 can support themselves and together form the scissor mechanism 39. Each conveying line section 31-35 is suspended directly from one of the supports 21-25. If the conveying line sections 31-35 are not stable enough to form a self-supporting scissor-like mechanism 39, a crossbeam 62 suspended from the support 22 can be provided, which supports the conveying line section 32 via retaining devices 61. This is shown in Figure 7.

[0053] In the embodiment shown in Fig. 8, the crossbeam 62 carries a flexible conveying line 63. In this design, the transition between the conveying line sections held on the crossbeams 62 of different supports 21-25 can be achieved without an intermediate pipe joint. The movements of the supports 21-25 relative to each other are accommodated within the conveying line 63 by deformation of the conveying line 63.

[0054] Figure 9 shows a variant in which a maintenance platform 64 is arranged in assembly hall 14. In other embodiments, the maintenance area can also be located outside assembly hall 14. The maintenance platform 64 forms a working platform located in the upper area of ​​assembly hall 14, allowing easy access to the movable components of the concreting system. The concreting system can be moved so that the distance between the proximal end and the distal end of the conveying line 28 is minimal. The concreting system is then in a state where all components requiring maintenance are easily accessible from the maintenance platform 64.

Claims

Patent claims 1. Concreting system for producing precast concrete elements, comprising a plurality of conveying line sections (31, 32, 33, 34, 35) which together form a conveying line (28) extending between a proximal end (11) and a distal end (12), wherein a first conveying line section (31) is suspended from a first support (21) via a first pivot joint (41) and wherein a second conveying line section (32) is suspended from a second support (22) via a second pivot joint (42), wherein the first support (21) is movable in a longitudinal direction relative to the second support (22) in order to change the distance between the proximal end (11) and the distal end (12) of the conveying line (28), wherein a dispensing mechanism (36) is arranged between the distal end (12) of the conveying line (28) and a discharge opening (47), wherein the The discharge mechanism (36) is designed toto change the position of the outlet opening (47) relative to the distal end (12) of the conveying line (28), wherein the dispensing mechanism (36) is designed to move the outlet opening (47) relative to the distal end (12) of the conveying line (28) such that the movement of the outlet opening (47) includes a movement in the transverse direction (40).

2. Concreting system according to claim 1, wherein the first conveying line section (31) and the second conveying line section (32) are designed as rigid conveying line sections (31, 32).

3. Concreting system according to claim 2, wherein the first conveying line section (31), the second conveying line section (32), the first support (21) and the second support (22) are subject to a forced coupling such that a change the angle between the first section of the conveying line (31) and the second conveying line section (32) is accompanied by a linear relative movement between the first support (31) and the second support (32).

4. Concreting system according to one of claims 1 to 3, wherein the second conveying line section (32) is connected to the first conveying line section (31) via a pipe joint (29).

5. Concreting system according to claim 4, wherein the pipe joint (29) defines a vertically oriented pivot axis (37).

6. Concreting system according to one of claims 1 to 5, wherein the first pivot joint (41) defines a vertically oriented pivot axis (38).

7. Concreting system according to claim 6, wherein the pivot axis (38) of the first pivot joint (41) intersects the center of gravity of the first conveying line section (31).

8. Concreting system according to one of claims 1 to 7, comprising a frame device (20) which supports the first support (21) and the second support (22).

9. Concreting system according to claim 8, wherein the frame device (20) comprises a first guide rail (65) and a second guide rail (66) and wherein the first support (21) and the second support (22) bridge a distance between the first guide rail (65) and the second guide rail (66).

10. Concreting system according to claim 7 or 8, wherein the proximal end (11) of the conveying line (28) is arranged in a fixed position relative to the frame device (20).

11. Concreting system according to claim 11 or 12, wherein the dispensing mechanism (36) is designed to change the height position of the discharge opening (47).

12. Assembly hall with a concreting system, wherein the concreting system is designed according to one of claims 1 to 13.

13. Method for operating a concreting system, wherein the concreting system comprises a plurality of conveying line sections (31, 32, 33, 34, 35) which together form a conveying line (28) extending between a proximal end (11) and a distal end (12), wherein a first conveying line section (31) is suspended from a first support (21) via a first pivot joint (41), and wherein a second conveying line section (32) is suspended from a second support (22) via a second pivot joint (42), and wherein the first support (21) is moved relative to the second support (22) to change the distance between the proximal end (11) and the distal end (12) of the conveying line (28), wherein a dispensing mechanism (36) is arranged between the distal end (12) of the conveying line (28) and an outlet opening (47), and wherein the dispensing mechanism (36) is actuated to move the outlet opening (47) relative to the distal end (12) of the conveying line (28) so that the movement of the outlet opening (47) includes a movement in the transverse direction (40).

Images