END HOSE HOLDER FOR PLACING BOOMS OF CONCRETE PUMPS, CONCRETE PUMP HAVING AN END HOSE HOLDER AND METHOD FOR MOUNTING AN END HOSE HOLDER

Abstract

The invention relates to an end hose holder (20) for distributor booms (2) of concrete pumps (1), to a concrete pump (1) with corresponding end hose holder (20) and to a method for assembly thereof. The end hose holder (20) is used for the selective provision of an attachment point for an end hose (6) and comprises a foot shell coupling (21), which is fastened by way of its foot (23) to a support element (24), for the rotary pipe connection of two concrete line segments (11, 14), the support element (24) having a flange (26) which is configured for the coupling connection to a concrete line segment (11, 14), the relative position of which flange in relation to the foot shell coupling (21) corresponds to a predetermined concrete line segment (11, 14).

Claims

1. An end hose holder for distributor booms of concrete pumps for the selective provision of an attachment point for an end hose, comprising a foot shell coupling, which is fastened by way of its foot to a support element, for the rotary pipe connection of two concrete line segments, the support element having a flange which is configured for the coupling connection to a concrete line segment, the relative position of which flange in relation to the foot shell coupling corresponds to a predetermined concrete line segment.

2. The end hose holder of claim 1, wherein the predetermined concrete line segment is a concrete line pipe bend, preferably with a bending angle of 90.

3. The end hose holder of claim 1, wherein the foot shell coupling and the flange are adapted to concrete line segments with a nominal diameter of (DN) 100 or 125.

4. The end hose holder of claim 1, wherein the flange is formed by a, preferably standardized, weld-on collar.

5. The end hose holder of claim 4, wherein the support element is a support plate on which the weld-on collar and the foot shell coupling are fastened directly.

6. A concrete pump comprising a distributor boom with a plurality of boom arms which can each be pivoted relative to one other and along which a concrete delivery line is guided, the concrete delivery line being formed, in the joint regions, by concrete line segments in such a way that the axis of rotation of a respective shell coupling connecting the concrete line segments is oriented perpendicularly with respect to the longitudinal axis of the boom arms, characterized in that an end hose holder of claims 1 is arranged in a joint region, the foot shell coupling of which holder forms the shell coupling with axis of rotation oriented perpendicularly with respect to the longitudinal axis of the boom arms, and the flange of which holder is connected to a concrete line segment on the boom arm which is closer to the tip of the distributor boom and which concomitantly forms the joint region.

7. The concrete pump of claim 6, wherein that concrete line segment which is temporarily replaced by the end hose holder is fastened, at one end thereof, to the foot shell coupling of the end hose holder and is connected, at the other end, to an end hose.

8. The concrete pump of claim 6, characterized in that the end hose holder is arranged in the joint region which is concomitantly formed by the boom arm which also forms the tip of the distributor boom.

9. A method for assembling an end hose holder of claim 1 on a concrete pump comprising a distributor boom with a plurality of boom arms which can each be pivoted relative to one another and along which a concrete delivery line, formed of a plurality of concrete line segments which are connected to one another via shell couplings, is guided, comprising the following steps: unfastening the shell coupling on both sides of the concrete line segment to be temporarily replaced by the end hose holder and removing the concrete line segment and one of the two shell couplings; and inserting the end hose holder, connecting the end hose holder both to the one concrete line segment, which was originally adjacent to the removed concrete line segment, via the foot shell coupling of the end hose holder and to the other concrete line segment, which was originally adjacent to the removed concrete line segment, via the flange of the end hose holder and the remaining shell coupling.

10. The method of claim 9, wherein the previously removed concrete line segment is fastened to the foot shell coupling of the end hose holder, at the other end of which line segment an end hose is preferably fastened.

11. The method of claims 9 wherein the end hose holder is arranged in the joint region which is concomitantly formed by the boom arm which also forms the tip of the distributor boom.

Description

BRIEF DESCRIPTION OF THE DRAWINGS

[0035] The invention will now be described by way of example on the basis of an advantageous exemplary embodiment, with reference to the accompanying drawings. In the figures:

[0036] FIG. 1 shows a schematic illustration of a mobile concrete pump;

[0037] FIGS. 2a, b show a schematic illustration of an end hose holder according to the invention; and

[0038] FIG. 3 shows a schematic illustration of the use of the end hose holder from FIG. 2 on the concrete pump from FIG. 1.

DETAILED DESCRIPTION

[0039] The mobile concrete pump 1 with distributor boom 2, which is illustrated in FIG. 1, is a truck-mounted concrete pump in the case of which the distributor boom 2 is fastened on a mobile substructure 3. The distributor boom 2 can be folded out, as illustrated, and for this purpose comprises a plurality of boom arms 5 which can be pivoted relative to one another by way of hydraulic cylinders 4 and in which a delivery line 10 for flowable concrete is guided, said delivery line opening into a first end hose 6 at the end of the distributor boom 2. By means of a core pump 7 arranged on the substructure 3, flowable concrete can be conveyed from the feed hopper 8, through the delivery line 10, to the free open end of the end hose 6.

[0040] The delivery line 10 is formed of a plurality of concrete line segments 11. The individual concrete line segments 11 are rotationally connected to one another via shell couplings 12. In addition to elongate straight, and also slightly bent, concrete line segments 11 which are fastened to the respectively adjacent boom arm 5 via pipe holders 13, two concrete line pipe bends 14 which are connected via a common shell coupling 12 (not visible in FIG. 1) and which have 90 bending angles are provided in the joint region 5 between two boom arms 5, the axis of rotation of said shell coupling 12 coinciding with the common pivot axis of the two boom arms 5.

[0041] In some applications, it is desirable to provide a second end hose 6, which is longer than the first end hose 6, at the joint region 5 which is concomitantly formed by the outermost boom arm 5, instead of providing the first end hose 6 at the outermost end of the distributor boom 2. In the case of concrete pumps 1, like the one which is illustrated, in which all of the shell couplings 12 in the joint region are designed without a foot, this is however not possible according to the prior art.

[0042] FIG. 2 illustrates an end hose holder 20 according to the invention, by way of which the second end hose 6 according to FIG. 1 can nevertheless be assembled. Here, FIG. 2a shows a schematic plan view of the end hose holder 20, while FIG. 2b illustrates a side view of same.

[0043] The end hose holder 20 comprises a foot shell coupling 21 for the rotary pipe connection of two concrete line segments 11, in particular of two concrete line pipe bends 14. The foot shell coupling 21 is designed according to the prior art, for example DE 10 2011 077 346 A1, and has a lever 22 for easy opening and closing of the foot shell coupling 21. The foot shell coupling 21 is fastened by way of its foot 23 on a support element 24 configured as a support plate. A weld-on collar 25 which has a flange 26 at its free end is also arranged on the support element 24.

[0044] The end hose holder 20 is constructed in such a way that the relative position of the foot shell coupling 21 to the flange 26 corresponds to a concrete line pipe bend 14 of the delivery line 11 of the concrete pump 10. Therefore, if a corresponding concrete line pipe bend 14, one end of which coincides with the flange 26, is conceptually assumed, the other end of the conceptual concrete line pipe bend 14 lies in the foot shell coupling 21 such that it can be connected by way of the latter to a further concrete line segment 11. Said conceptual concrete line pipe bend 14 is indicated in FIG. 2a by way of a dotted line.

[0045] The dimensioning of both the foot shell coupling 21 and the flange 26 is adapted to concrete line segments with a nominal diameter of (DN) 125. As a result, a concrete line pipe bend 14 of the delivery line 11 of the concrete pump 10 from FIG. 1 can readily be temporarily replaced by the end hose holder 20, one of the two shell couplings 12, which held the concrete line pipe bend 14 to be replaced, being replaced by the foot shell coupling 21 during this time.

[0046] The corresponding use of the end hose holder 20 is shown in FIG. 3.

[0047] In the last joint region 5 before the tip of the distributor boom 2, the concrete line pipe bend 14 which is downstream in the flow direction of the concrete has first been removed by corresponding opening of the shell couplings 12 and replaced by the end hose holder 20. For this purpose, the end hose holder 20 is connected by way of its flange 26, via one of the previously opened shell couplings 12, to the concrete line segment 11 on the outermost arm 5 of the distributor boom 2 and is connected by way of its foot shell coupling 21 to the remaining concrete line pipe bend 14.

[0048] The previously removed concrete line pipe bend 14 is provided as the second element held in the foot shell coupling 21, said pipe bend being able to be pivoted about an axis which is permanently congruent with the pivot axis of the two boom arms 5. The second end hose 6 is fastened at the free end of said concrete line pipe bend 14, for example by means of the shell coupling 12 which was replaced by the foot shell coupling 21 of the end hose holder 20.