FRAME WITH A MAST BRACKET FOR STORING A THICK FAT DISTRIBUTION MAST

Description

[0001] The present invention relates to a frame with a mast support attached to it for the storage of a thick material distribution mast.

[0002] For the placement of concrete using mobile or stationary concrete pumps, a high-density concrete distribution boom is regularly employed, supported by a frame. A so-called boom support is fixed to the frame, allowing the high-density concrete distribution boom to be rotatably mounted around a vertical axis. The high-density concrete distribution boom can be constructed from several boom segments that can be pivoted relative to each other to reach the desired placement location. The concrete, pressurized by a pump, can be placed at the desired location via a concrete delivery line running along the high-density concrete distribution boom. Frames of the aforementioned type can also be used with truck mixers, in which case the frame is additionally designed to support a mixing drum.

[0003] Particularly when the mast segments are extended, large load moments are generated, which must be transferred via the mast support into the frame and from there into the ground. The frame can, for example, have two longitudinally aligned support profiles that serve to transmit the force. In the prior art, it is common practice to weld the mast support to the support profiles. However, the necessary welding work is complex. Once the weld is complete, the support profiles can only be transported together with the attached mast support, resulting in high transport costs and making the manufacturing process inflexible.

[0004] DE 10 2014 211992 A1 discloses a frame with a mast support and a support profile.

[0005] Starting from this prior art, the object of the present invention is to provide a frame with an attached mast support for mounting a slurry distribution mast, as well as a mobile slurry pump equipped with a corresponding frame, which at least partially avoids the aforementioned disadvantages. This object is achieved by the features of the independent claims. Advantageous embodiments are described in the dependent claims.

[0006] The frame according to the invention comprises, as per claim 1, a mast support for mounting a high-density material distribution mast and a support profile for receiving and transmitting a force flow generated by the weight of the high-density material distribution mast. The mast support has two tab elements projecting downwards from the mast support, each with a through-hole, wherein the support profile includes a bolt receptacle aligned with the through-holes. A bolt element for connecting the mast support to the support profile passes through the through-holes and the bolt receptacle.

[0007] First, some terms used in this description will be explained. The frame according to the invention has at least one, and preferably two, support profiles, which may, for example, be aligned parallel to each other. Preferably, each support profile is associated with two bracket elements. For the sake of simplicity, in many places in this description, only the configuration of a single support profile interacting with two bracket elements will be explained. It is understood that the frame according to the invention can also have two or more support profiles, each of which may have further features explained in this description. The support profile typically has a longitudinal direction along which the force flow generated by the high-density material distribution mast is directed. This longitudinal direction can coincide with the longitudinal direction of the frame.

[0008] The support profile is designed to receive and transmit the force flow. In particular, it may be provided that a significant portion of the force flow generated by the slurry distributor mast is transmitted along the support profiles to a force distribution area spaced apart from the mast base. The force distribution area may be located, in particular, at one longitudinal end of the support profile. A support system connected to the support profile may be present in the force distribution area, designed to transfer the forces transmitted by the support profile into the ground. This frame differs in that it is not designed for support structures in which the force flow is transmitted directly from the mast base into a supporting structure formed by support leg boxes and into extendable or pivotable support legs connected thereto (see, for example, EP 3 369 876 A1).In particular, rear support legs are not strictly necessary with this frame design, as the support profile itself, together with its associated bracing system, already provides adequate rear support. Since rear support legs take up considerable space when extended or swung out, the footprint of this frame design is correspondingly reduced. Furthermore, the absence of rear support legs frees up more storage space on the loading platform above the frame.

[0009] Within the scope of the invention, it was discovered that the mast support can be securely and flexibly connected to the support profile by means of a detachable bolt connection. It has been shown that the lug elements provided on the mast support ensure sufficient force transmission into the support profiles. This significantly increases the flexibility in the production of a frame according to the invention. In particular, the connection between the support profiles and the mast support is considerably simplified, as no complex welding work is required. The support profiles can therefore be transported separately from the mast support with much greater flexibility, and the mast support can be connected to the support profiles only at or near the installation site.This can be easily achieved by placing the mast stand onto the support profiles in such a way that the through holes of the lug elements are aligned with a corresponding bolt receptacle, and the orientation of the through holes of the lug elements corresponds to the orientation of the bolt receptacle. A bolt element can then be inserted into the bolt receptacle and the through holes of the lug elements.

[0010] The tab element can be designed as a sheet metal part. Preferably, the sheet metal part is aligned substantially parallel to a side surface of the support profile. The force transmission of the forces exerted by the high-density material distribution mast can thus be efficiently carried out along the surface of the sheet metal part as well as into the approximately parallel side surface of the support profile.

[0011] In one embodiment, the tab element is essentially aligned along the longitudinal direction of the support profile. This design has proven advantageous for force transmission, as no changes in direction are required to transmit the forces along the longitudinal direction of the support profile.

[0012] The tab elements can laterally grip the support profile in the transverse direction. In this design, the support profile is located between the tab elements, thus achieving a force distribution on the support profile that is symmetrical with respect to the longitudinal axis.

[0013] The support profile can be designed as a hollow profile with a first side wall and a second side wall. Preferably, one of the flange elements is aligned substantially parallel to the first side wall, and preferably the other flange element is aligned parallel to the second side wall of the hollow profile. If the support profile is designed as a hollow profile, the forces exerted by the high-density material distribution mast can be introduced into the side walls of the hollow profile particularly effectively or transmitted via the side walls.

[0014] The cleat element can be connected to the mast base by means of a joining connection. In particular, the joining connection can be a welded joint. Since welded joints are usually required in the manufacture of the mast base anyway, the additional production of a welded joint between the cleat elements and the mast base represents only a minor additional effort.

[0015] The mast base can have at least one side surface section, with at least part of the joint extending along this side surface section. The mast base can also have a bottom surface section, with at least part of the joint extending along this bottom surface section. The side surface section and / or the bottom surface section can be flat. The aforementioned features reduce manufacturing costs and improve the stability of the joint as well as its suitability for transmitting large loads. The mast base can, for example, be formed from a plurality of bent or joined sheet metal parts, with the side surface section and / or the bottom surface section being formed by one of these sheet metal parts.

[0016] In one embodiment, a cylindrical sleeve is inserted into the bolt receptacle, its inner surface corresponding to an outer surface of the bolt element. The stability of the bolt connection can be significantly increased by the cylindrical sleeve. The cylindrical sleeve can be firmly connected to the support profile by a joining connection. In particular, the cylindrical sleeve can be welded to the support profile.

[0017] The cylinder sleeve can further feature an end flange projecting outwards from the cylinder surface, designed to abut an inner or outer surface of the support profile. Such a flange allows for a defined position relative to the support profile along the axial direction of the cylinder sleeve. Additionally, the flange can serve as a weld pool retainer when the cylinder sleeve is welded to the support profile. Furthermore, the cylinder sleeve can have a section projecting beyond the support profile in the axial direction of the bolt receptacle. This can facilitate the creation of a stable welded joint.

[0018] The support profile preferably has at least two profiled sheets, each bent along at least one bending axis and joined along at least two connecting lines to form a hollow profile, wherein the connecting lines and / or the bending axes are preferably aligned parallel to the longitudinal direction of the support profile.

[0019] It was recognized that the bent profiled sheets enable the production of a cost-effective, reliable, and flexible support profile. In particular, it has been shown that assembling the sheets along two connection lines, where they can be bolted or welded together, results in a stable support profile with minimal distortion. Furthermore, the cross-sectional shape of the support profiles can be adapted much more easily by appropriately selecting the bending axes and angles, compared to previously known square tube frames whose shape is predetermined by an extrusion process.

[0020] Furthermore, with square tube frames manufactured using the extrusion process, the subsequent creation of fastening openings (such as the intended bolt receptacles) is extremely complex. In contrast, profiled sheets can be provided with a desired number of openings (such as bolt receptacles, fastening openings, and / or access openings) before being assembled into the hollow profile and preferably also before the profiled sheets are bent. The profiled sheets can then be bent and assembled into the hollow profile in a subsequent step. An access opening can be provided adjacent to a bolt receptacle.

[0021] The support profile can have at least one first force-bearing area for receiving a force flow exerted by the high-density material distribution mast, wherein the mast support is connected to the first force-bearing area of ​​the support profile by means of the lug elements. The frame can also have a second force-bearing area, spaced longitudinally from the first force-bearing area of ​​the support profile, for receiving a force flow exerted by the high-density material distribution mast, wherein the mast support is connected to the second force-bearing area of ​​the support profile by means of a crossbeam. Preferably, the connection is made by a bolted connection. In this embodiment, the force flow exerted by the high-density material distribution mast can be distributed between the two force-bearing areas.

[0022] Furthermore, the support profile can have a force dissipation area spaced longitudinally from the bolt receptacle for dissipating the force flow into a subsoil, wherein the frame also has a support system connected to the support profile in the force dissipation area, which is designed to introduce the forces transmitted by the support profile (13) into the subsoil. The invention further relates to a mobile high-viscosity pump with a frame according to the invention, a high-viscosity pump assembly mounted on the frame, and a high-viscosity distribution mast connected to the mast base. The mobile high-viscosity pump can be further developed by additional features described in connection with the frame according to the invention.

[0023] Further advantages and embodiments of the invention will become apparent from the dependent claims, the description and the accompanying drawings.

[0024] It is understood that the features mentioned above and those to be explained below can be used not only in the combinations specified, but also in other combinations according to the claims, without leaving the scope of the present invention.

[0025] The invention is illustrated in the drawings using an exemplary embodiment and is described in detail below with reference to the drawings. Figure 1 shows a mobile high-viscosity pump according to the invention in a partially schematic three-dimensional view; Figure 2 shows the frame of the Figure 1 in a three-dimensional rear view from a top oblique angle; Figure 3 shows the frame of the Figure 1 in a three-dimensional rear view from a low angle; Figure 4 shows the frame of the Figure 1 in a three-dimensional frontal view from a low angle; Figure 5 shows an enlarged section of the Figure 3Figure 6 shows parts of the frame of the Figure 1 in an exploded view; Figure 7 shows the mast block of the Figure 6 in an enlarged view; Figure 8 shows the in Figure 6 The support profiles shown are shown in an enlarged view; Figure 9 shows a three-dimensional enlarged side view of a part of the support profile of the Figure 8 Figure 10 shows a cross-sectional view of the support profile of the Figure 9 ; and Figure 11 shows another cross-sectional view of the support profile of the Figure 9 along another cutting plane with a cylindrical sleeve inserted.

[0026] Figure 1Figure 1 shows a three-dimensional side view of a mobile high-viscosity pump 9 according to the invention, comprising a motor-driven chassis 10, a driver's cab 11, and a frame 12 according to the invention. The frame 12 is mounted on the chassis 10 and thus rigidly connected to it. The frame 12 has two longitudinal support profiles 13, of which in Figure 1 Only one thing can be seen.

[0027] In a longitudinally forward area of ​​the frame 12 there is a mast support 17 which is firmly connected to the support profiles 13 (see also Figures 2 and 3 ). In the upper part of the mast support 17 there is a pivot bearing 19, on which a foldable thick-material distribution mast 20 is rotatably mounted about a vertical axis. In Figure 1The high-density material distribution mast 20 is in a folded state, in which it is placed on a longitudinally extending central area of ​​a loading platform of the mobile high-density material pump on two mast support stands 25, 26 (see also Figure 2 ).

[0028] In the rear section of the frame 12 is a viscous material feed hopper 27 and a viscous material pump located below it (not visible in the figure). Viscous material pressurized by the pump is conveyed via a pipeline 28 and further pipelines running along the viscous material distribution mast 20, and can thus be applied at a desired location. The frame 12 also has a force distribution area at its rear end, in which a support system 29 is located.

[0029] A significant portion of the force flow generated by the high-density material distribution mast 20 is transmitted via the support profiles 13 to the support system 29 and then dissipated into the ground. The mast support 17 is also connected at the front end of the frame 12 to support legs 30, which likewise absorb a portion of the force flow and dissipate it into the ground.

[0030] The Figures 2 to 4 show the frame 12 of the Figure 1 in three-dimensional views from different perspectives. Figure 5 shows one in Figure 4The section indicated by circle A is shown in an enlarged view. The chassis, the driver's cab, and the thick substance distribution mast have been omitted from these figures for clarity. These views show that the mast support 17 is connected to the support profiles 13 via crossbeams 31. Furthermore, the mast support 17 rests on the crossbeams 13 in a front area and is connected to the support profile 13 by means of a bolted connection. In particular, the Figures 3 to 5 Figure 1 shows a tab 21 arranged on the left side of the support profile 13 in the direction of travel, which is part of the bolted connection. The design of the bolted connection is described in conjunction with the Figures 6 to 8 explained in detail.

[0031] Figure 6 shows parts of the frame 12 of the Figure 1in an exploded view. In particular, the mast support 17 and the two profile beams 13 are shown in this view. Figures 7 and 8 show the mast support 17 and a portion of the beam profiles 13, respectively, in an enlarged view. In these views, it can be seen that there is an additional tab 22 on the right side of the beam profile 13 when viewed in the direction of travel. The tabs 21 and 22 are formed from sheet metal parts that are partially welded to a side surface section 16 of the mast support 17 and partially to a bottom surface section 18 of the mast support 17 along connecting lines. The tabs 21 and 22 are aligned approximately parallel to the side walls of the beam profile 13. The tabs 21 and 22 are also arranged at a distance from each other that corresponds to the cross-sectional width of the beam profile 13.When the mast stand 17 is placed on the frame, the tabs 21, 22 enclose the support profile 13 between them, so that the tabs 21, 22 come to rest next to the side walls.

[0032] The lug 21 has a front through-hole 23 and a rear through-hole 23. The lug 22 also has a front through-hole 24 and a rear through-hole 24. The through-holes 23, 24 of the adjacent lugs 21, 22 are aligned with each other. When the mast support 17 is placed on the support profile 13, the through-holes 23, 24 are also aligned with a bolt receptacle 14 extending through the support profile 13. After the mast support 17 is placed on the support profiles 13, a bolt element 15 can be inserted through the through-hole 23 of the left lug 21, through the bolt receptacle 14, and through the through-hole 24 of the right lug 22. A cylindrical sleeve is inserted into the bolt receptacle 14, which receives the bolt element. This is shown by the Figures 9 and 10 explained in detail.

[0033] Figure 9 shows a three-dimensional enlarged side view of a part of the embodiment of the Figure 1 used support profile 13. Figure 10 Figure 9 shows the support profile in a cross-sectional view. The views of Figures 9 and 10 It can be seen that the support profile 13 comprises two profiled sheets 40, 41, which are joined to form a hollow profile by being welded together along two connecting lines 42, 43. This creates a hollow profile with a cross-sectional width 44 of approximately 20 cm and a cross-sectional height 45 of approximately 40 cm. The profiled sheet 41 has overhangs of approximately 2 cm extending beyond the connecting lines 42, 43, which are not included in the cross-sectional width 44 or the cross-sectional height 45.

[0034] The profiled sheet 40 is bent about a bending axis 47 at approximately 90°, so that the profiled sheet 40 has two sections 40a, 40b separated from each other by the bending axis 47 and positioned at a 90° angle to each other. The profiled sheet 41 is bent about two bending axes 46, 51 at approximately 45° each, so that it has three sections 41a, 41b and 41c separated from each other by the bending axes 46, 51. Sections 40a and 41a represent side walls of the support profile 13 as described in this document.

[0035] Sections 41a and 41c of the profiled sheet 41, located at the edges, and sections 40a and 40b of the profiled sheet 40 are at an angle of approximately 90° to each other. Furthermore, the connecting lines 42 and 43 lie diagonally opposite each other within an imaginary rectangle formed by the cross-sectional width 44 and the cross-sectional height 45.

[0036] It has been shown that a reliable and stable welded joint can be achieved with vertically aligned profiled sheets and the aforementioned overhang. Furthermore, heat-induced component distortion during welding can be almost completely avoided due to the symmetrical arrangement of the connection lines, thus eliminating the need for subsequent straightening of the support profile 13.

[0037] Section 41c of the profiled sheet 41, which forms the underside of the support profile 13, has a width that is less than the maximum cross-sectional width 44 of the support profile 13. This results in the support profile 13 requiring less installation space in its lower region. By selecting the bending axes 46, 51, the cross-section of the support profile increases from the underside towards the top until it reaches the full maximum cross-sectional width 44 at the level of the bending axis 46. This increase in cross-sectional area allows for better utilization of the often more limited installation space available in the upper region of the support profile 13, thereby increasing the stability of the support profile 13.

[0038] The design of the profiled sheet 41 described above, with three sections 41a, 41b, and 41c positioned at an angle to each other, allows for clearance in the lower section of the support profile 13, despite the large cross-section in the upper area. This clearance can accommodate chassis components (such as protruding spring hangers) or fender brackets, while also ensuring good accessibility for servicing. Furthermore, the inclined section 41b, angled at approximately 45° to sections 41a and 41c, provides a more harmonious force flow with respect to cross-sectional properties (area moment of inertia, bending, torsion, and shear flow) compared to other types of cutouts (such as a 90° angled cutout), while simultaneously maximizing the utilization of the available installation space.

[0039] The Figure 9 It also shows the already associated Figure 6The bolt receptacle 14 described in the profiled sheet 41 is arranged in the profiled sheet and is aligned with the through holes 23, 24 of the tab elements 21, 22 when the mast support 17 is connected to the profiled beams 13. A bolt receptacle 14 is also provided in the Figure 11 to see, which shows another cross-sectional view of the support profile 13 along a different section plane. In the Figure 9 and 11 It can be seen that a cylindrical sleeve 32 is inserted into the bolt receptacle 14. Next to the bolt receptacle 14 is an access opening 48. The cylindrical sleeve 32 has a slant along its axial direction (in Figure 11(Indicated by the dashed line 56) sections 33 project beyond the side walls 40a, 41a, which are connected to the respective side walls 40a, 41a along a weld seam 55. In addition, the cylinder sleeve 32 includes flanges 49 projecting outwards from the cylinder surface, each bearing against an inner surface of the respective side wall 40a, 41a. The flanges 49 define the position of the cylinder sleeve 32 along its axial direction 56 and also serve as weld band reinforcement. This is particularly important in the Figure 11 to see.

[0040] The cylinder sleeve 32 also has an inner surface that corresponds to an outer surface of the bolt element 15. When the bolt element 15 is inserted through the bolt receptacle 14, its outer surface is therefore in close contact with the inner surface of the cylinder sleeve 32. The bolt elements 15 are thus held securely in the cylinder sleeve. Consequently, the tab elements 21, 22 are correspondingly securely fixed to the profile support 13 when connected.

Claims

1. A frame (12) with a boom pedestal (17) for mounting a thick matter distribution boom (20) and with a carrier profile (13) for receiving and transmitting a force flow generated by the weight force of the thick matter distribution boom (20), wherein the boom pedestal (17) has at least two tab elements (21, 22) which project downward from the boom pedestal (17) and each having a through hole (23, 24), characterized in that the carrier profile (13) comprises a bolt receptacle (14) aligned with the through holes, and wherein a bolt element (15) for connecting the boom pedestal (17) to the carrier profile (13) is guided through the through holes (23, 24) and the bolt receptacle (14).

2. The frame (12) as claimed in claim 1, in which the tab element (21, 22) is in the form of a sheet metal part which is preferably oriented parallel to a side surface of the carrier profile (13).

3. The frame (12) as claimed in claim 1 or 2, in which the tab element (21, 22) is oriented along the longitudinal direction of the carrier profile (13).

4. The frame (12) as claimed in any one of claims 1 to 3, in which the tab elements (21, 22) engage laterally around the carrier profile (13) in the transverse direction.

5. The frame (12) as claimed in any one of claims 1 to 4, in which the carrier profile (13) is in the form of a hollow profile, wherein preferably one of the tab elements (21) is oriented parallel to a first side wall (41a) of the hollow profile and wherein furthermore preferably the other of the tab elements (22) is oriented parallel to a second side wall (40a) of the hollow profile.

6. The frame (12) as claimed in any one of claims 1 to 5, in which the tab element (21, 22) is connected to the boom pedestal (17) by a joining connection.

7. The frame (12) as claimed in claim 6, in which the boom pedestal (17) has at least one side surface portion (16), wherein at least part of the joining connection extends along the side surface portion (16).

8. The frame (12) as claimed claim 6 or 7, in which the boom pedestal (17) has a base surface portion (18), wherein at least part of the joining connection extends along the base surface portion (18).

9. The frame (12) as claimed in any one of claims 1 to 8, in which a cylinder sleeve (32) is inserted into the bolt receptacle (14), the inner surface of which cylinder sleeve corresponds to an outer surface of the bolt element (15).

10. The frame (12) as claimed in claim 9, in which the cylinder sleeve (32) is fixedly connected to the carrier profile (13) by a joining connection.

11. The frame (12) as claimed in claim 9 or 10, in which the cylinder sleeve (32) has an end-side collar (49) which projects outward from the cylinder surface and is designed to bear against an inner surface of a side wall (40a, 41a) of the carrier profile (13).

12. The frame (12) as claimed in any one of claims 1 to 11, in which the carrier profile (13) comprises at least two profiled sheets (40, 41) which are each bent along at least one bending axis (46, 47, 51) and are assembled along at least two connecting lines (42, 43) to form a hollow profile, wherein preferably the connecting lines (42, 43) and / or the bending axes (46, 47, 51) are oriented parallel to the longitudinal direction of the carrier profile (13).

13. The frame (12) as claimed in any one of claims 1 to 12, the carrier profile (13) of which has at least one first force absorption region for absorbing a force flow exerted by the thick matter distribution boom (20), wherein the boom pedestal (17) is connected to the first force absorption region of the carrier profile by means of the tab elements (21, 22), wherein the frame also has a second force absorption region which is spaced apart from the first force absorption region in the longitudinal direction of the carrier profile (13) and is provided for absorbing a force flow exerted by the thick matter distribution boom (20), wherein the boom pedestal is connected to the second force absorption region of the carrier profile (13) by means of a transverse carrier (31), and wherein the connection is preferably produced by a bolt connection.

14. The frame (12) as claimed in any one of claims 1 to 13, the carrier profile of which has a force dissipation region which is spaced apart from the bolt receptacle (14) in the longitudinal direction of the carrier profile (13) and is provided for dissipating the force flow into an underlying surface, wherein the frame also has a supporting system (29) which is connected to the carrier profile (13) in the force dissipation region and is designed for introducing the forces, which are transmitted by the carrier profile (13), into the underlying surface.

15. A thick matter pump with a frame (12) as claimed in any one of claims 1 to 14, a thick matter pumping device mounted on the frame (12), and a thick matter distribution boom (20) which is connected to the boom pedestal (17).