Support column

Abstract

The invention relates to a support column (1) for a climbing mast (2) of a stationary concrete distributor device (3), wherein the support column (1) is put together from at least two column parts (4, 5) which are releasably connected to one another at the end faces, wherein the column parts (4, 5) are connected to one another by means of a plurality of connection bolts (6) and link plates (7) receiving the connection bolts (6). The problem addressed by the invention is that of specifying an improved support column (1) which provides a connection of the column parts (4, 5) to be put together, said connection being robust and easy to produce. The invention proposes that the link plates (7) are releasably fastened to the column parts (4, 5) via the connection bolts (6), wherein the link plates (7) can be received in link plate receptacles (8) of the column parts (4, 5), wherein the link plate receptacles (8) have centring receptacles (9), wherein the link plates (7) are centred in the link plate receptacles (8) via centring bolts (10) of the link plates (7) received in the centring receptacles (9).

Description

[0001] Support column

[0002] The invention relates to a support column for a climbing mast of a stationary concrete distribution device, wherein the support column is composed of at least two column parts that are detachably connected to one another at the end faces, wherein the column parts are connected to one another via a plurality of connecting bolts and tabs that receive the connecting bolts.

[0003] Such a support column is known from WO 2008 / 025582 A1 and is used to construct multi-story concrete buildings. The support column is part of a climbing mast, which is formed from the support column and an articulated mast rotatably mounted on the support column. The articulated mast, consisting of mast segments that can be pivoted relative to one another, has concrete delivery lines and a connected end hose at the mast tip, which is moved by the articulated mast to distribute concrete on a floor slab of the building that is to be poured. The climbing mast is part of a stationary concrete distribution device, which is formed from the climbing mast and a stationary concrete pump, whereby the concrete pump pumps the concrete to be distributed on the floor slab of the building that is to be poured through the concrete delivery lines to the end hose. The support column is assembled on site from several column sections that are easily transported to the construction site.For this purpose, WO 2008 / 025582 A1 proposes connecting the column parts to one another using several connecting bolts and tabs that accommodate the connecting bolts. The tabs that protrude axially from the column parts, as well as the receptacles for the tabs, must be manufactured with great precision because they align and center the column parts relative to one another. However, a high degree of precision makes inserting the tabs and connecting the column parts to one another more difficult.

[0004] It is therefore an object of the invention to provide an improved support column which offers a robust and easy-to-manufacture connection of the column parts to be assembled.

[0005] This object is achieved by a support column having the features of claim 1.

[0006] Because the tabs are detachably attached to the column parts via the connecting bolts, whereby the tabs are designed to be received in tab receptacles in the column parts, whereby the tabs are centered in the tab receptacles via centering bolts of the tabs that are received in the centering receptacles, a robust and easy-to-make connection of the column parts to be assembled can be achieved. The detachably attached tabs can be removed from the column parts for transport so that they can be stored safely during transport and are not damaged. To make it easy to install the tabs, they can be placed in tab receptacles in the column parts. The tab receptacles have centering receptacles in which the tabs can be easily centered. For this purpose, the tabs have centering bolts that are received in the centering receptacles of the tab receptacles.This allows for particularly simple installation of the brackets in the bracket mounts. The column parts to be connected are aligned with each other via the centering bolts of the brackets located in the centering mounts. This allows the connecting bolts to be easily inserted into the brackets to connect the column parts to each other via the brackets.

[0007] Advantageous embodiments and further developments of the invention emerge from the dependent claims. It should be noted that the features individually listed in the claims can also be combined with one another in any technologically expedient manner, thus demonstrating further embodiments of the invention. According to an advantageous embodiment of the invention, the centering receptacles are designed as end-face grooves on the column parts, and the column parts connected to one another at the end faces are centered relative to one another by the centering bolts located in the centering receptacles. The centering receptacles arranged at the end faces ensure simple centering of the column parts assembled at the end faces when the centering bolts are accommodated in the grooves of the column parts.

[0008] A particularly preferred embodiment provides that the centering pins of the brackets have intersecting pin axes when positioned in the centering receptacles. The intersecting pin axes of the centering pins allow for particularly precise transverse alignment of the column parts to be connected. The centering receptacles align the centering pins with respect to the intersecting pin axes. The pin axes preferably intersect at exactly one point in the center of the end face of the column parts. By intersecting the pin axes, torsional forces can be reliably transmitted via the column parts connected by the brackets and connecting pins.

[0009] A particularly advantageous embodiment of the invention relates to the brackets having two bolt receptacles, and the centering bolt being positioned precisely between the bolt receptacles. With the centering bolt positioned centrally between the bolt receptacles, the brackets can be accommodated in the bracket receptacles regardless of their orientation. This eliminates the need to adhere to a predetermined orientation when positioning the brackets in the bracket receptacles. Poka-Yoke error protection, which can delay assembly, is also unnecessary.

[0010] A particularly advantageous embodiment of the invention provides that the tab receptacles form insertion areas on the column sections that are open at the front. The tabs can be easily inserted into the column sections via the insertion areas that are open at the front. When assembling two column sections, the required tabs can simply be inserted into the tab receptacles of the lower column section from above. When lowering the upper column section, its tab receptacles allow it to align itself with the inserted tabs on the lower column section.

[0011] An advantageous embodiment of the invention provides that the plate receptacles each have a bolt passage spaced apart from the centering receptacle for the passage of the connecting bolts. The connecting bolts can be easily pushed through the plates in the plate receptacles via the bolt passage. The defined distance between the bolt passage and the centering receptacle allows the plates to be aligned with the centering bolts so that the connecting bolts can be easily guided through the bolt receptacles of the plates while aligned in the bolt passage.

[0012] A particularly advantageous embodiment is one in which the outwardly open bolt bushings each have a stop for the connecting bolt to the interior of the support column. The stop ensures the correct positioning of the connecting bolts in the bolt bushings. The stop simply prevents the bolts from being inserted too deeply into the bolt bushings and falling into the support column.

[0013] An advantageous embodiment provides for a cover element to be removably attached from the outside over the bolt bushings, which secures the connecting bolts in the bolt bushing against slipping out. In addition to securing the bolts in the bolt bushing, the cover element also protects the bolts from contamination on the construction site. The cover element protects the bolts and the bolt bushings, in particular, from the penetration of liquid concrete.

[0014] A particularly advantageous embodiment is one in which the centering pin is connected to the remaining plate via a press fit. Thanks to the pressed-in centering pin, the remaining plate can be manufactured with a larger tolerance, reducing the risk of the plate jamming in the plate receptacles. The pin receptacles can still be inserted into the plate with a precise fit relative to the pressed-in centering pin.

[0015] A particularly advantageous embodiment of the invention provides for a gap between the end faces of the detachably connected column parts, and outside of this gap, the column parts only rest on each other in the area around the bracket mounts. After assembly into the support column, the column parts only touch each other in the area of ​​the bolt-bracket connections. This creates defined force transmission points. A defined gap is deliberately provided between the bolt-bracket connections.

[0016] According to a preferred embodiment of the invention, the two column sections are connected to each other via four brackets. Using four brackets and a total of eight connecting bolts, a particularly stable yet easy-to-establish connection between the column sections can be created.

[0017] Further features, details, and advantages of the invention will become apparent from the following description and the drawings, which show an exemplary embodiment of the invention. Corresponding objects or elements are provided with the same reference numerals in all figures. They show:

[0018] Figure 1 supporting column according to the invention on a building,

[0019] Figure 2 View of support column,

[0020] Figure 3 External view of the connection of two column parts,

[0021] Figure 4 View of tabs in tab holders,

[0022] Figure 5 Detailed view of tab holders, Figure 6 Individual views of tabs,

[0023] Figure 7 Exploded view of components for connecting the column parts,

[0024] Figure 8 View of the gap between the column parts, and

[0025] Figure 9 Sectional view through bolt-tab connection.

[0026] A support column according to the invention is shown schematically in Figure 1, designated by the reference numeral 1. The support column 1 is part of a climbing mast, which is formed from the support column 1 and an articulated mast 21 rotatably mounted on the support column 1. The articulated mast 21, which consists of a turntable and mast segments that can be pivoted relative to one another, has concrete delivery lines and an end hose 22 connected to it at the mast tip, which is moved by the articulated mast 21 to distribute concrete on a floor slab D to be poured of the building G. The climbing mast 2 is part of a stationary concrete distribution device 3, which is formed from the climbing mast 2 and a stationary concrete pump 24, wherein the concrete pump 24 pumps the concrete to be distributed on the floor slab D to be poured of the building G through the concrete delivery lines to the end hose 22.The support column 1 is assembled on the construction site from several column parts 4, 5, 20 which can be easily transported to the construction site.

[0027] Figure 2 shows a single view of the support column 1. The support column 1 is composed, for example, of two column sections 4, 5 that are detachably connected to one another at the end faces. For this purpose, the column sections 4, 5 are connected to one another at the end faces 18.

[0028] Figure 3 shows the connection point of the two column sections 4, 5 of the support column 1 in an enlarged view from the outside. The cover elements 16 mounted from the outside protect the connection point, but also prevent a closer look. In Figure 4, the cover elements 16 have therefore been removed from the first column section 4, so that the structure of the connection point can be better seen. The column sections 4, 5 are connected to one another via several connecting bolts 6 and tabs 7 that receive the connecting bolts 6. According to the invention, the tabs 7 are detachably attached to the column sections 4, 5 via the connecting bolts 6. The detachably attached tabs 7 can be removed from the column sections 4, 5 for transport, so that they can be safely stowed and not damaged during transport. For easy installation, the tabs 7 can be inserted into tab receptacles 8 of the column sections 4, 5. The tab receptacles 8 have

[0029] Centering recesses 9 in which the brackets 7 can be easily centered. For this purpose, the brackets 7 have centering bolts 10, which are accommodated in the centering recesses 9 of the bracket recesses 8. This facilitates the assembly of the brackets 7 in the bracket recesses 8. The column parts 4, 5 to be connected are aligned via the

[0030] The centering bolts 10 of the link plates 7, which are received in the centering receptacles 9, align with one another. This allows the connecting bolts 6 to be easily received in the link plates 7 in order to connect the column parts 4, 5 to one another via the link plates 7. The centering receptacles 9 are designed as end-face grooves on the column parts 4, 5. The column parts 4, 5, which are connected to one another at the end, are centered with respect to one another by the centering bolts 10 of the link plates 7 located in the centering receptacles 9. When positioned in the centering receptacles 9, the centering bolts 10 have intersecting bolt axes 11. The intersecting bolt axes 11 of the connecting bolts 6 allow forces, in particular torsional forces, to be transmitted securely and evenly between the column parts 4, 5. The two column parts 4, 5 are preferably connected to one another via four link plates 7.The tab receptacles 8 each have a bolt passage 14 spaced from the centering receptacle 9 for the passage of the connecting bolts 6.

[0031] Figure 5 shows that the tab receptacles 8 form insertion areas 13 on the column parts 4, 5 that are open at the front, into which the tabs 7 are inserted for assembly on the column parts 4, 5 before the column parts 4, 5 are placed on top of one another. The outwardly open bolt bushings 14 each have a stop 15 for the connecting bolt 6 towards the interior of the support column 1. The bolt bushings 14 (Fig. 4) are protected from dirt from the outside by the cover element 16. It is detachably attached to the column parts 4, 5 by screws. The cover elements 16 also secure the connecting bolts 6 in the bolt bushings 14 to prevent them from slipping outwards. The connecting bolts 6 are thus secured on all sides.

[0032] Figure 6 shows two tabs 7 in an individual view. The tabs 7 have two bolt receptacles 12 for the connecting bolts 6 (Fig. 4), and the centering bolt 10 is arranged exactly between the bolt receptacles 12. On the left, the centering bolt 10 is shown displaced outside the tab 7 via the bolt axis 11. The centering bolt 10 is connected to the remaining tab 7 via a press fit, as shown on the right. Due to the pressed-in centering bolt 10, the remaining tab 7 can be manufactured with a larger tolerance, which reduces the risk of jamming in the tab receptacles 8 (Fig. 5). Nevertheless, the bolt receptacles 12 can be inserted into the tab 7 with a precise fit by machining them relative to the pressed-in centering bolt 10.

[0033] Figure 7 shows an exploded view of the components used to connect the column parts 4, 5 (Fig. 4). The connecting bolts 6 are secured in the bolt receptacles 12 of the brackets 7 and in the bolt passages 14 of the bracket receptacles 8 (Fig. 5) via the stop 15 and the cover element 16. The centering bolt 10 of the bracket 7 positions the bracket 7 in the centering receptacles 9 of the bracket receptacles 8, so that the bolt receptacles 12 are aligned with the bolt passages 14. The centering bolt 10 is used to align the centering receptacles 9 of the bracket receptacles 8 with each other. The centering receptacles 9 are fixed to the column parts 4, 5.

[0034] Force transmission elements 23 of the tab receptacles 8 (Fig. 5).

[0035] Figure 8 shows a view of the gap 19 between the column parts 4, 5. The gap 19 is provided between the end faces 18 of the detachably connected column parts 4, 5. Therefore, the column parts 4, 5 only rest on one another outside of this gap 19, i.e., only in the area around the tab receptacles 8. This creates defined force transmission points between the column parts 4, 5.

[0036] Figure 9 shows a sectional view of the bolt-and-lug connection between the column sections 4, 5 of the support column 1. Four lugs 7 and eight connecting bolts 6 create a robust yet easy-to-assemble connection between the column sections 4, 5. The four connecting bolts 6 intersect at the guide axes 17 when positioned in the bolt passages 14 of one of the column sections 4, 5. - List of Reference Symbols -

[0037] List of reference symbols

[0038] 1 support column

[0039] 2 Climbing mast 3 Concrete distribution device

[0040] 4 First column section

[0041] 5 Second column section

[0042] 6 connecting bolts

[0043] 7 tabs 8 tab holders

[0044] 9 centering shots

[0045] 10 centering bolts

[0046] 11 bolt axes

[0047] 12 bolt receptacles 13 insertion areas

[0048] 14 Bolt feedthrough 15 Stop

[0049] 16 Cover element

[0050] 17 guide axes

[0051] 18 Front side 19 Gap

[0052] 20 Additional column part

[0053] 21 articulated mast

[0054] 22 End hose

[0055] 23 Power transmission elements 24 Stationary concrete pump

[0056] G Building

[0057] D floor ceiling

Claims

Patent claims 1. Support column (1) for a climbing mast (2) of a stationary concrete distribution device (3), wherein the support column (1) is composed of at least two column parts (4, 5) which are detachably connected to one another at the end faces, wherein the column parts (4, 5) are connected to one another via a plurality of connecting bolts (6) and tabs (7) receiving the connecting bolts (6), characterized in that the tabs (7) are detachably fastened to the column parts (4, 5) via the connecting bolts (6), wherein the tabs (7) are designed to be receivable in tab receptacles (8) of the column parts (4, 5), wherein the tab receptacles (8) have centering receptacles (9), wherein the tabs (7) are centered in the tab receptacles (7) via centering bolts (10) of the tabs (7) received in the centering receptacles (9).

2. Support column (1) according to claim 1, characterized in that the centering receptacles (9) are designed as end-face grooves on the column parts (4, 5) and the column parts (4, 5) connected to one another at the end face are centered to one another by the centering bolts (10) located in the centering receptacles (9).

3. Support column (1) according to claim 1 or 2, characterized in that the centering bolts (10) of the tabs (7) have intersecting bolt axes (11) when positioned in the centering receptacles (9).

4. Support column (1) according to one of claims 1 to 3, characterized in that the tabs (7) have two bolt receptacles (12) and the centering bolt (10) is arranged exactly between the bolt receptacles (12).

5. Support column (1) according to one of the preceding claims, characterized in that the tab receptacles (8) form open insertion areas (13) on the front side of the column parts (4, 5).

6. Support column (1) according to one of the preceding claims, characterized in that the tab receptacles (8) each have a bolt passage (14) spaced from the centering receptacle (9) for the passage of the connecting bolts (6).

7. Support column (1) according to claim 6, characterized in that the outwardly open bolt passages (14) each have a stop (15) for the connecting bolt (6) to the interior of the support column (1).

8. Support column (1) according to claim 6 or 7, characterized in that a cover element (16) is detachably fastened from the outside via the bolt passages (14), which cover element secures the connecting bolts (6) in the bolt passage (14) against slipping out.

9. Support column (1) according to one of the preceding claims, characterized in that the centering bolt (10) is connected to the bracket (7) via a press fit.

10. Support column (1) according to one of the preceding claims, characterized in that a gap (19) is provided between the end faces (18) of the detachably connected column parts (4, 5) and the column parts (4, 5) outside this gap (19) rest on one another only in the area around the tab receptacles (8).

11. Support column (1) according to one of the preceding claims, characterized in that the two column parts (4, 5) are connected to one another via four tabs (7).

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