EP2980334A1 - Crane silo for the transport and the processing of bulk construction material - Google Patents

Abstract

Crane silo (1) for transporting pourable building materials, such as concrete, gravel, sand or the like, with a container (2) designed to receive a building material, which at an upper end of the container provides a filling opening (3) provided for charging the container (2) and at a funnel-shaped tapered lower end of the container has an emptying opening (4) for removal of the building material, and on a support frame (5) is fixed, wherein the emptying opening (4) an operable, for metering the container (2) to be taken from building material amount closure device (6) and attached to the container (2) and / or the support frame (5), wherein the closure device (6) has a closure housing (7) on which a vertical container emptying direction transversely directed pivot axis (8) of a rotary valve ( 9) arranged, curved housing wall (10) is formed along which inner side (11) has a slide plate (12) of the rotary valve ( 9) on an underside of the closure housing (7) arranged closure housing opening in an open position and on one of the inside (11) of the housing wall (10) opposite side wall (14) is pivotable into a closed position.

Description

The invention relates to a crane silo for the transport and processing of pourable building materials, such as concrete, gravel, sand or the like., With a trained for receiving a building material container, which provided at an upper end of the container for loading the container filling opening and a funnel-shaped tapered lower end of the container has a discharge opening for removal of the building material, and is attached to a support frame, wherein the discharge opening associated with an operable, for metering the container to be taken amount of building material closure device and is attached to the container and / or the support frame.
Kransilos of this type are used for processing concrete, in particular self-compacting concrete SCC (Self Compacting Concrete), but also for viscous building materials.
The SCC, which is provided with a relatively high liquid content, complicates a loss-free liquid and fine fraction of the concrete discharged from the emptying opening of the container of a crane silo via the closure device during processing.
The by a high weight and liquid-proving mass can from the crane silo on a guided, hanging conveyor hose or oscillating tubular Lance be discharged into an open cavity.
The drop height of the supplied SCC concrete intensifies the compaction and homogeneity in a vertical wall formwork, so that the use of compaction equipment can be largely dispensed with.

But also viscous concrete can be supplied from polygonal, circular or oval container cross-sections of a crane silo a delivery hose or directly from a closure device a cavity.

The pre-published EP 2 465 655 A1 refers to a crane silo for processing concrete via a vertically suspended, guided delivery hose. In this case, a metering device acting on the cross section of the delivery hose is provided for changing the delivery rate, which is connected to its actuation with a manually rotatable drive shaft.

Of particular importance for the operational safety and reliability of the closure device for dosing of the container of the crane silo at the discharge opening to be taken amount of building material and the tightness of the closure device to the outside.
Many closure devices are not suitable to lead liquid concrete leak-free. The necessary movement play under the movable closure parts often prevents a loss-free transfer of a certain consistency having concrete mass from the container into the delivery hose or directly into the formwork cavity.

This circumstance leads to an insufficient processing effort and building material losses as well as to quality losses on the building object.

It has therefore been the object of the present invention to eliminate the adverse circumstances and to create a crane silo, whose closure device the building materials from the discharge opening of the container via the delivery hose or transferred directly into the prepared cavity lossless and safe processing and handling guaranteed by the crane silo, especially from a scaffold. Moreover, the closure device should be easily accessible for cleaning and maintenance.

According to the invention, this object is achieved by providing a curved housing wall arranged on a pivot axis of a rotary slide which is transversely directed to the vertical container emptying direction, along which a slider plate of the rotary slide is moved to an open housing on one of the underside of the lock housing Housing wall opposite side wall is pivotable in a closed position.
The closure device resp. The crane silo can also be used to feed cavities by means of a downstream discharge chute.
The crane silo and the proposed closure device are designed to be simple and user-friendly, so that the amount of concrete to be extracted is easily determinable.

It proves to be advantageous if the slide plate of the rotary valve is formed flat or following the curvature of the inside of the housing wall, so that both a manual and hydraulic / mechanical actuation of the rotary valve is possible.

To limit the rotary valve movement can limit the slider end position Stop be provided on the opposite side wall to which the slide plate is additionally pressed, for example by means of spring force.

For the sake of simplicity, the projecting into the closure housing resp. the closure opening limiting stop attached to a lower, protruding end of a directed in the emptying direction on the front of the slide plate guide member on the opposite side wall, so that the slide plate can be sealingly abutment on the stop.

Preferably, the movable ends of the slide plate by sealing end edges respectively. be formed sealing lips, attachments or the like., Wherein the curved housing wall associated end of the slide plate has a scraping edge, which forms a sealing edge, and scraper edge on the inside of the curved housing wall.

It proves to be advantageous if the slide plate of the rotary valve by means of spaced lever arms resp. Swivel arms is attached to a in the pivot axis of the rotary valve extending shaft and thus ensures sufficient stability and functionality of the rotary valve.

For this purpose, the shaft is expediently mounted at right angles to the curved housing wall and the side wall, opposite side plates of the closure housing.

For replacement or maintenance, the closure housing is expediently connected in an effective manner by means of a device which can be fastened to the underside of the container in a flange-like manner.

It proves to be advantageous if at least one end of the shaft for mounting an actuating lever is designed for actuating the closure device, such that it responds to the manual or hydraulic-mechanical mobility of the shaft. the slide plate of the rotary valve is usable.

Appropriately, the actuating lever to support the necessary closing force with a counter force, preferably a spring force is applied, which keeps the closure device closed.

For larger container volume resp. larger Kransilos, it is advantageous if one end of the shaft is connected to a trained for transmitting a closing and opening force hydraulic-mechanically driven actuator, whereby the manual maneuverability during processing assists or occupational safety is favored.

A hydraulic-mechanical actuator has a piston connected to a shaft attached to the lever piston in two cylinder chambers divided piston-cylinder unit, wherein the one cylinder chamber is connected to a hydraulic pump and the other cylinder chamber with a gas pressure accumulator, thereby processing the Building materials with less effort than in a purely manual use can be done.

For a universal use of the crane silo is provided that the underside of the closure housing is designed for releasably securing a funnel-shaped hose fastening device, wherein the processing of the building materials resp. can be performed with a chute. At the same time, the mounting structure on the underside of the lock housing allows the replacement of different, adapted to a specific processing or building material amount hose fastening devices.

Fig. 1

eine räumliche Darstellung eines Kransilos,

Fig. 2

eine räumliche Darstellung einer Verschlussvorrichtung eines Kransilos,

Fig. 3

eine Seitenansicht der in Fig. 2 veranschaulichten VerschlussVorrichtung,

Fig. 4

eine Draufsicht der in Fig. 2 und 3 gezeigten Verschlussvorrichtung,

Fig. 5

einen Schnitt durch die Fig. 4 nach der Linie V - V,

Fig. 6

eine auszugsweise Darstellung eines alternativen Kransilos und

Fig. 7

eine räumliche Darstellung einer Vorrichtung zur Befestigung eines Förderschlauches an der Verschlussvorrichtung.

The invention will be described with reference to the cited resp. the cited prior art and the drawing, to which reference is made with respect to all unspecified details in the description, explained using an exemplary embodiment. In the drawing show:

Fig. 1

a spatial representation of a crane silo,

Fig. 2

a spatial representation of a closure device of a crane silo,

Fig. 3

a side view of in Fig. 2 illustrated closure device,

Fig. 4

a top view of the Fig. 2 and 3 shown closure device,

Fig. 5

a cut through the Fig. 4 along the line V - V,

Fig. 6

a partial representation of an alternative crane silos and

Fig. 7

a spatial representation of a device for attachment of a delivery hose to the closure device.

The Fig. 1 to 7 illustrate a crane silo 1 for the transport and processing of pourable building materials such as concrete, gravel, sand or the like. For this purpose, the crane silo 1 from a building material receiving container 2, at the top of a filling opening 3 for feeding the container 2 and at the bottom End having an emptying opening 4 for removal of the building material, which is connected to an effective operable closure device, wherein container 2 and closure device attached to a removable support frame 5 and / or are connected thereto. The emptying opening 4 of the container 2 and the closure device 6 are in Fig. 1 not apparent.
Furthermore, the in Fig. 1 illustrated crane silo 1 via a on the outside of the container 2 in the inoperative position outflow chute 31st
The container 2 consists of a cylindrical upper part 32, followed by a downwardly constricting funnel-like lower container part 33 follows. The upper part 32 has at the upper end two opposite hanger eyes 34 for connection to a cable hanger, which is suspended on a crane hook. Upper part 32 and lower part 33 of the container 2 are usually connected by welds. The support frame 5 connected to the container 2 in the transition region of the container top 32 and lower part 33 consists of an open frame part 35 forming the lower end of the crane silo 1, which is supported by two opposite shield-like upstanding support elements 36, 37 and a single support element 38 between the support elements 36, 37 is mounted on the frame part 35. Since it is a circular container 2, the frame part 35 is circular in shape; If the container has a polygonal cross-section, the frame part 35 can be circular or polygonal.
On both sides of the shield-like support members 36, 37 handles 39, 40 are fixed, at which the operating personnel the crane silo 1 are manually guided.
Fig. 1 also shows an actuator 41 for opening and closing the Closure device which is not apparent. The actuating device 41, for example a lever mechanism, has a manually operable lever 42, which is fastened to a shaft for actuating the closure device. Of course, the coupled with the closure device actuator could also be operated hydraulically-mechanically.

Alternatively, as in Fig. 6 illustrated- the support frame 5 of the crane silo 1 consist of a circular, open frame member 35 of tubular profile on which instead of support members 36, 37 at intervals a plurality of vertical support members 38 are attached, in the transition region of the container top 32 and lower part 33 with the container 2 are connected.

Fig. 2 shows a closure device according to the invention 6, the flange at the lower end of the container 2, promoting effective with the discharge opening 4, respectively attached. is detachably attached. For this purpose, a closure housing 7 is provided, which has at the upper end a rectangular flange 15 of four strips 16, 17, 18, 19, which are festschraubbar with a counter flange 20 at the lower end of the container. The strips 18, 19 are attached to vertical side plates 21, 22 of the closure housing 7, which have a right angle projecting inguinal ligament 23 for their stiffening at the lower end. The side plates 21, 22 of the closure housing 7 are used for supporting the closure housing 7 transversely to the container emptying direction passing, a Schekachse 8 a slide plate 12 of a rotary valve 9 forming shaft 24 in attached to the side plates 21, 22 flanges 25, 26, preferably with roller bearings is stored. On the shaft 24, two spaced pivot arms 27, 28 attached (see also Fig. 4 and 5 ), which are fixedly connected at its pivotable end with the slide plate 12.

From a manufacturing point of view, the segment-shaped pivot arms 27, 28 in the end to the slide plate 12 towards a recess 29.
The slide plate 12 in turn is according to Fig. 5 in the sense of their opening and closing movement circular arc-shaped.
The slider plate 12 itself could conveniently also be formed flat and at the movable ends each have a sealing edge 43, 44, which are close to the housing housing 10, 14 completing the closure housing 7 tightly abut / abut.
The housing walls 10, 14 extend parallel to the shaft 24, wherein one of the opening movement of the rotary valve 9, respectively. the slide plate 12 corresponding, circularly curved housing wall 10 and one of these on the shaft 24 opposite side wall 14 and the side plates 21, 22 preferably form the welded closure housing 7.
Fig. 5 shows the trained with a slide plate 12 rotary valve 9 in the closed position of the closure device 6, in which the movable ends of the slide plate 12 on the one hand to a stop 30, over the entire width of the closure housing 7, respectively. the side wall 14 extends and is connected to a guide member 45 forming portion of the side wall 14. The outlet opening 13 at the lower end of the closure housing 7 is formed by bead arrangements which are deformed several times parallel to the shaft 24 and which give the outlet opening 13 on the closure housing 7 greater stability.
In the closed position, the slide plate 12 by means of a directed on the rotary valve spring force 9, which is to overcome opening the outlet opening 13, with one end edge 43 to the stop 30 and the opposite end edge 44 of the slide plate 12 to the at the lower end of the curved Housing wall 10 pressed on the inside 11.
Thus formed by the stopper 30 in the closure housing 7 no empty space is, in which could accumulate building materials, a projecting from the side wall 14 or formed by this guide member 45 is provided, which is preferably connected to the stop 30 and forms a directed in the emptying direction of the container 2 on the front of the Schieberpülatte 12 guide surface. Preferably, the lower end of the guide member 45 projects beyond the stop 30, as in Fig. 5 shown.

In order to exclude a loss of liquid and solidification of the building material in the closure device, especially in the closed position of the latter as far as possible, the adjustable end edges of the slide plate 12 are formed as sealing lips, which cooperate with the stop 30, respectively. on the inner side 11 of the curved housing wall 10, preferably at the lower end form a tight separation seam.
Of course, the stop 30 and / or the lower portion of the inner side 11 of the curved housing wall 10 could be formed in an equivalent manner with sealing elements.

The Fig. 2 to 6 show the closure device 6 with a manually or hydraulically-mechanically adjustable actuator 41. The opening of the closure device 6 by means of shaft 24 can be effected by lever 42, to which the shaft 24 at least at one end an approximately radially protruding mounting or insertion 48 has, on the the lever 42 on or inserted and can be locked by a securing element 49.

Furthermore, the Fig. 2 to 6 can be seen that the closure device 6 alternatively, with removed operating lever 42, by a in the EP 2 465 655 A1 described hydraulically-mechanically actuated closure device open and can be closed.
In the present case, a one-armed lever 50 is attached to one end of the shaft 24, which forms a joint 52 connected to a piston-cylinder unit 51. Facing away from the joint 52, the piston-cylinder unit 51 is articulated on a carrier 53, which is fastened to the closure housing 7. The piston-cylinder unit 51 is separated by the piston into two loadable cylinder chambers, one of which is connected to a hydraulic pump and the other is connected to a gas pressure accumulator 54 or pressure vessel.
For processing a building material, in particular self-compacting concrete by means of delivery hose, the lower end of the closure housing 7 for releasably securing a in Fig. 7 formed hose fastening device 55 which is constructed for attaching delivery hoses of different delivery cross sections.

The Fig. 7 illustrates a hose attachment device 55, which is also used without conveyor hose for processing of building materials. It has an adaptable to the lower edge of the closure housing 7, preferably rectangular frame 56 mounted on attached eyelets 57 on one side of the outlet opening 13 of the closure housing 7 on Aufsteckdornen 58 and on the opposite side with an indicated quick release or buckle closure on the Outside of the side wall 14 is suspended. At the bottom of the frame 56, a funnel-shaped guide member 60 is welded, which opens at the outlet end in a collar-like fastening element 61. The funnel-shaped guide element 60 has at the upper end the shape of the frame 56 and tapers according to the cross-sectional shape of the fastened to the fastening element 61 by means of Bride conveyor hose (not visible).
Due to the different container sizes to accommodate different Building material quantities, and the correspondingly different emptying opening widths of the container 2 and the closure devices 6 adapted thereto, the adaptable hose fastening devices 55 have different proportions for their replacement, so that the frame 56 and the guide element 60 and the collar-like fastening element 61, circular or oval, accordingly are formed. At the opposite end of the hanger eyelets 57 of the hose attachment device 55 is designed as a handle for manual assembly and disassembly of the hose attachment device 55 auxiliary device 62 attached to the frame 56.

In contrast to Fig. 1 is the support frame 5 of the crane silo according Fig. 6 from a frame part or bottom ring 35 which is open in the effective region of the discharge chute 31 and on which seven distributed supporting elements 38 are fixed and connected to the container 2 in the transition region of the cylindrical or prismatic container upper part 32 and the conical or pyramidal container lower part 33.

Claims (14)

Crane silo (1) for transporting pourable building materials, such as concrete, gravel, sand or the like, with a container (2) designed to receive a building material, which at an upper end of the container provides a filling opening (3) provided for loading the container (2). and at a funnel-shaped tapered lower end of the container has an emptying opening (4) for removal of the building material, and on a support frame (5) is fixed, wherein the emptying opening (4) an operable, for metering the container (2) to be taken from building material amount closure device (6) and attached to the container (2) and / or the support frame (5), characterized in that the closure device (6) comprises a closure housing (7) on which a vertical container emptying direction transverse pivot axis (8) a rotary valve (9) arranged, curved housing wall (10) is formed, along which inner side (11) has a slide plate ( 12) of the rotary valve (9) on a on the underside of the closure housing (7) arranged closure housing opening in an open position and at one of Inner side (11) of the housing wall (10) opposite side wall (14) is pivotable in a closed position. Crane silo according to claim 1, characterized in that the slide plate (12) of the rotary valve (9) is designed to be flat or curved according to the curvature of the inner side (11) of the housing wall (10). Crane silo according to claim 1 or 2, characterized in that the opposite side wall (14) for the rotary valve (9) resp. the slide plate (12) has the closing position determining stop (30). Crane bin according to claim 3, characterized in that the closure housing (7) resp. the closure opening delimiting stop (30) with a lower, preferably protruding end of a directed in the direction of discharge to the front of the slide plate (12) guide member (45) of the opposite side wall (14) is connected. Crane silo according to claim 3 or 4, characterized in that the movable ends of the slide plate (12) by sealing end edges (43, 44) resp. sealing lips are formed. Crane silo according to one of claims 1 to 5, characterized in that the slide plate (12) of the rotary valve (9) by means of lever arms resp. Swivel arms (28) on a in the pivot axis (8) of the rotary valve (9) lying shaft (24) is fixed. Crane silo according to claim 6, characterized in that the shaft (24) is mounted at right angles to the housing wall (10) and the side wall (14) arranged opposite side plates (21, 22) of the closure housing (7). Crane silo according to one of claims 1 to 7, characterized in that the closure housing (7) by means of a flange-like device with the discharge opening (4) of the container (2) is actively connected. Crane silo according to one of claims 6 to 8, characterized in that at least one end of the shaft (24) for manual actuation of the rotary valve (9) resp. the slide plate (12) an actuating lever (42) is fixed. Crane bin according to claim 9, characterized in that the actuating lever (42) for opening the closure device (6) against a force, preferably a spring force is formed operable. Crane bin according to one of claims 6 to 8, characterized in that one end of the shaft (24) is connected to a hydraulic-mechanically drivable actuating device (41) designed to transmit a closing and opening force. A crane silo according to claim 11, characterized in that the hydraulic-mechanical actuating device (41) comprises a piston connected to a lever (50) fixed to the shaft (24) in two cylinder chambers separate piston-cylinder unit (51) the one cylinder chamber with a hydraulic pump and the other cylinder space is connected to a gas pressure accumulator (54). Crane lilot according to one of claims 1 to 12, characterized in that the underside of the closure housing (7) for releasably securing a funnel-shaped hose fastening device (55) is formed. Crane bin according to claim 13, characterized in that the underside of the closure housing (7) is designed for the alternate cultivation of differently usable or adapted to different processing ways hose fastening devices (55).

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