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 a distributor boom of a concrete pump, the end hose holder configured as an attachment point of an end hose, said end hose holder comprising: a support element having a flange, the flange defining a first coupling axis and configured for a coupling connection to a first concrete line segment of the distributor boom, a foot shell coupling defining a second coupling axis and having a foot fastened to the support element, the foot shell coupling for a rotary connection with a second concrete line segment, wherein the first coupling axis is oriented at an angle of 90° relative to the second coupling axis.

2. The end hose holder of claim 1 wherein a position of the foot shell coupling relative to the flange match a position of end flanges of a concrete line segment in the form of a concrete line pipe bend.

3. The end hose holder of claim 1, wherein the foot shell coupling and the flange are configured to mate with 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 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, wherein the plurality of boom arms are pivotable relative to one another about pivot axes at a plurality of joint regions, a concrete delivery line guided along the plurality of boom arms, the concrete delivery line including a plurality of concrete line segments, the concrete line segments in the joint regions coupled by respective shell couplings in such a way that an axis of rotation of a respective shell coupling in a joint region is oriented perpendicular to a longitudinal axis of the boom arms and coaxial with the pivot axis of the joint region, wherein an end hose holder of claim 1 replaces one of the concrete line segments coupled by the respective shell coupling, the second coupling axis of the foot shell coupling coaxial to the axis of rotation of the respective shell coupling in the joint region.

7. The concrete pump of claim 6, wherein the concrete line segment which is 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 thereof, to the end hose.

8. The concrete pump of claim 6, wherein the joint region where end hose holder is arranged is a joint region formed by the boom arm which also forms a 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 are pivotable relative to one another about pivot axes at a plurality of joint regions and along which a concrete delivery line, formed of a plurality of concrete line segments connected to one another via shell couplings, is guided, comprising: unfastening a shell coupling on both sides of a first concrete line segment in a joint region to be temporarily replaced by the end hose holder; removing the first concrete line segment and one of the two shell couplings; inserting the end hose holder by connecting the foot shell coupling to a second concrete line segment which was adjacent an upstream end of the first concrete line segment, and connecting the flange of the end hose holder to a third concrete line segment that was adjacent a downstream end of the first concrete line segment, wherein the end hose holder provides a structural connection between the second and third concrete line segments.

10. The method of claim 9, comprising: fastening one end of the first concrete line segment to the foot shell coupling of the end hose holder and connecting the other end of the first concrete line segment to an end hose, wherein the first concrete line segment can be pivoted relative to the foot shell coupling and a weight of the first and second concrete line segments and the end hose with concrete contained therein, is introduced into the boom arms on both sides of the joint region where the end hose holder is inserted, by way of the end hose holder, the second and third concrete line segments, and a plurality of pipe holders connecting the second and third concrete line segments to the boom arms.

11. The method of claim 9, wherein the step of inserting the end hose holder comprises: inserting the end hose holder in a joint region formed by a boom arm which also forms a tip of the distributor boom.

Description

BRIEF DESCRIPTION OF THE DRAWINGS

(1) 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:

(2) FIG. 1 shows a schematic illustration of a mobile concrete pump;

(3) FIGS. 2a, b show a schematic illustration of an end hose holder according to the invention; and

(4) 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

(5) 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.

(6) 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.

(7) 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.

(8) 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.

(9) 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.

(10) 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.

(11) 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.

(12) The corresponding use of the end hose holder 20 is shown in FIG. 3.

(13) 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.

(14) 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.