SELF-PROPELLED MOBILE CONCRETE PUMP AND MAST SUPPORT DEVICE

Description

[0001] The present invention relates to a self-propelled mobile concrete pump with a placing boom, in particular a truck-mounted concrete pump, according to the preamble of claim 1.

[0002] Truck-mounted concrete pumps, along with special types of tracked concrete pumps, are self-propelled mobile concrete pumps with a placing boom. In addition to a boom support frame supporting the pivoting placing boom, they typically feature a subframe that extends far outward toward the rear of the machine and serves as a support for various components such as the pump unit (the actual concrete pump), water tanks, and / or other components. In the rear area of the subframe, there is usually a boom support frame on which the placing boom, usually consisting of several articulated, interconnected rods, can be placed or supported in its folded state.

[0003] The boom support frame generally serves only the function of guiding the folded placing boom during lowering and relieving the load on the boom support frame or swivel head by resting it on the boom support frame during travel. It is firmly connected to the subframe. Other machine functions such as emergency controls, control cabinets, hydraulic valves, lighting, coolers, displays, etc., are distributed throughout the truck-mounted concrete pump, depending on the manufacturer and product, occasionally also on or near the boom support frame.

[0004] The boom support frame is typically welded directly onto the subframe. Aside from the side-mounted components such as the control cabinet or mast emergency control, it serves no other significant function for the machine beyond its primary support or support function for the placing boom. Other machine functions or functional units are housed separately on the truck-mounted concrete pump, which takes up valuable installation space.

[0005] A further disadvantage of this type of concrete pump is that conventional subframes comprise two parallel longitudinal beams extending in the longitudinal direction of the machine, which are connected to each other by the mast support frame, forming a large "H" (in plan view). This makes current subframes difficult to transport.

[0006] From DE 10 2004 007 509 A1 a generic self-propelled mobile concrete pump with a mast support is known.

[0007] The present invention is therefore based on the object of developing concrete pumps of the type mentioned at the outset in such a way that the available installation space is better used and transport is facilitated.

[0008] According to the invention, this object is achieved by a concrete pump having the features of claim 1. Advantageous embodiments of the invention emerge from the subclaims and the following description.

[0009] Accordingly, a self-propelled mobile concrete pump, in particular a truck-mounted concrete pump, is proposed, comprising a placing boom mounted on a mast support for rotation and / or pivoting, and an auxiliary frame extending from the mast support to the rear of the concrete pump for supporting components of the concrete pump. A mast support device is arranged on the auxiliary frame, on which the placing boom can be placed. The mast support device is preferably designed as a mast support frame.

[0010] According to the invention, the mast support device is designed as an assembly with at least one integrated functional unit, wherein the functional unit serves to control and / or execute a machine function of the concrete pump.

[0011] The idea of the invention is therefore not to distribute all of the machine functions of the concrete pump separately across the machine, but to integrate at least one of these machine functions into the boom support device. Instead of using the installation space occupied by the boom support device exclusively for depositing and supporting the placing boom, as was previously the case, the boom support device according to the invention accommodates one or more integrated functional units for machine functions and therefore represents a multifunctional assembly. The installation space thus freed up can be used for other machine functions or other parts of the concrete pump, which is particularly advantageous given the very limited installation space between the placing boom and the pump unit in larger concrete pumps (e.g., large-boom truck-mounted concrete pumps).

[0012] The mast support device is provided as a pre-assembled unit, which is fully assembled and mounted as a single unit on the subframe prior to installation. For transport, the mast support device can be removed from the subframe and transported separately. This significantly simplifies shipping and transport.

[0013] In one possible embodiment, it is provided that one or more of the following functional units is / are integrated into the mast support device: a cooling device such as a fan or oil cooler; a filter device, in particular an oil filter; an electrical control unit; an input device such as an operator panel, a touchscreen, a keyboard and / or other input means such as switches, levers, buttons, etc.; a display device such as a display, a light, a multi-function display, etc.; a hydraulic control block, in particular a mast control block, agitator control block and / or auxiliary consumer control block.

[0014] Of course, each of the functional units listed above can exist multiple times, for example, multiple displays, different control blocks, etc.

[0015] Many of these components in conventional concrete pumps are typically mounted near the boom support frame or on the side of the boom support frame, where they take up considerable space. For example, the control cabinet is usually bolted to the side of the boom support frame as an additional component. The boom control block is also often mounted externally to the boom support frame via a bracket. This can be a space problem, particularly with larger truck-mounted concrete pumps with large, space-consuming outriggers. In the concrete pump according to the invention, however, the control cabinet and / or the boom control block can be integrated into the boom support frame.

[0016] In addition to the aforementioned components, any other machine functions can of course be integrated into the mast support device, such as a high-pressure cleaner or a device for filling a cistern. Additionally, storage compartments or other storage space for tools or similar items could be provided.

[0017] In a further possible embodiment, the mast support device comprises at least one fastening means for attaching a railing and / or a walkway and / or a hydraulic line and / or a pump unit (in particular the actual concrete pump, which pumps the concrete into the delivery line and via the placing boom to the destination and can be attached to the subframe) and / or a tension strut for the truss-like connection between the subframe and the mast support. It is also conceivable for the mast support device to share fastening means, for example for attaching the tension struts, with the subframe.

[0018] In another possible embodiment, the mast support device is detachably attached to the subframe, in particular by screwing. This allows the mast support device, preferably as a pre-assembled subassembly, to be easily and quickly attached to or removed from the subframe.

[0019] In another possible embodiment, the mast support device can be attached to the subframe at at least two different positions. For this purpose, the subframe preferably has corresponding fastening means, such as holes, at the designated positions.

[0020] The mast support device has at least one hydraulic connection for connecting a hydraulic component integrated into the mast support device (e.g. a control block) to a hydraulic system of the concrete pump and at least one electrical connection for connecting an electrical component integrated into the mast support device (e.g. a component of a control cabinet and / or an electronic display) to an electrical circuit of the concrete pump.

[0021] The mast support device is a pre-assembled unit that is completely bolted together at the factory and then bolted as a whole to the subframe of the concrete pump's base. Finally, only the hydraulic and electrical lines need to be connected. This allows for flexible, simple, and quick assembly and disassembly of the mast support device, for example, for transport. In truck-mounted concrete pumps of this type, however, the mast support frame is usually permanently welded to the subframe and cannot be removed for transport.

[0022] In a further possible embodiment, the mast support device has a modular structure and comprises at least one module receptacle for the detachable or reversible reception of the at least one integrated functional unit. The functional unit can comprise a module housing that can be inserted or pushed into the module receptacle of the mast support device. This makes it possible to flexibly adapt the machine functions integrated into the mast support device to the respective concrete pump type or even to a specific work application without having to intervene in the vehicle architecture or replace or dismantle the entire mast support device. The respective functional units for the various machine functions can be housed in uniform housings so that the modules can be easily exchanged depending on the configuration.

[0023] In another possible embodiment, the module receptacle and the at least one integrated functional unit, in particular its module housing, each have at least one interface for reversibly forming an electrical and / or hydraulic and / or mechanical connection. The interfaces can have identical dimensions or mechanical connection geometries for all modules, although the type of interface connections (e.g., hydraulic and / or electrical connections) can vary depending on the module and machine function.

[0024] The mast support device comprises a housing in which the at least one integrated functional unit is accommodated and which preferably comprises at least one openable cover, in particular a flap, for exposing the at least one integrated functional unit. The assembly provided by the mast support device therefore preferably has a common housing into which all functional units or machine functions are preferably integrated. This allows the mast support device as a whole to be easily assembled, disassembled, and transported. Certain functional units are preferably arranged such that they are easily accessible from the outside via corresponding covers or flaps, for example a control cabinet or a hydraulic oil filter for the purpose of maintenance or replacement.

[0025] The mast support device according to the invention can preferably be used for self-propelled mobile concrete pumps of different sizes and types.

[0026] Further features, details, and advantages of the invention will become apparent from the following exemplary embodiments explained with reference to the figures. They show: Figure 1: a perspective view of the auxiliary frame in the area of the mast support device of a known truck-mounted concrete pump; Figure 2: an embodiment of the mast support device of a concrete pump according to the invention in a perspective view; Figure 3: the auxiliary frame with mast support device according to an embodiment of the concrete pump according to the invention in a perspective view; Figure 4: the auxiliary frame with mast support, mast support device and support device of the concrete pump according to the invention according to an embodiment in a perspective view; Figures 5-6: further perspective views of the mast support device according to Figure 2 including subframe; and Figures 7-8: perspective views of the housing of the mast support device according to Figure 2 on the subframe;

[0027] The Figure 1shows, by way of example, the subframe 14 of a truck-mounted concrete pump 10 known from the prior art, with a view of the boom support frame 20'. The subframe 14 comprises two longitudinal members that extend parallel to one another along the longitudinal axis of the truck-mounted concrete pump 10. The boom support frame 20' is firmly welded to the longitudinal members of the subframe 14 and serves to support or deposit a placing boom (not shown here). Attached to the subframe 14 is, among other things, a pump unit (the actual concrete pump, which pumps the concrete through a delivery line 46) (not shown).

[0028] The 20' boom support frame serves the sole function of guiding the folded placing boom during storage and relieving the load on the boom support frame 12, to which the placing boom is mounted, by resting it on the 20' boom support frame during travel. The remaining machine functions are distributed throughout the truck-mounted concrete pump 10 and arranged at different positions. In the Figure 1 For example, a control cabinet 34 can be seen arranged laterally next to the mast support frame 20', which takes up the installation space next to the mast support frame 20'. Above the control cabinet 34, a hydraulic mast control block 38 and several displays 36 are located in a housing.

[0029] On the other side of the mast support frame 20' there is a conveyor pipe 46 (conveyor line), which is connected via a conveyor pipe holder 44 (in the Figure 1 not visible, as it is attached to the mast support bracket 20' below the conveyor pipe 46). In In front of the mast support 20' in the direction of travel, there is an oil cooler 32 with a cover, which is mounted on a bracket of the pump unit. In addition, a hydraulic oil filter can be installed at the location indicated by the arrow 34 (in the Figure 1 not shown) and attached to the mast support bracket 20' from the outside.

[0030] All of these machine functions or the functional units that execute or control these machine functions require a correspondingly large amount of installation space in the area of the subframe 14 or the mast support frame 20'.

[0031] The Figure 2 shows a perspective view of an embodiment of the mast support device 20 according to the invention with a housing 22, the walls of which are shown transparent in order to make the underlying components visible. Figure 3 The mast support device 20 is shown in a different view together with the subframe 14. The mast support device 20 is a mast support frame on which the distribution boom can be placed from above.

[0032] The mast support device 20 has a substantially H-shaped profile when viewed from the front, wherein each of the legs of the "H" (right and left side regions 26 and 27) is screwed on the underside to one of the longitudinal members of the subframe 14 (cf. Figure 6 ). The mast support device 20 has, on an upper side between the side regions 26, 27, a flat storage area for the distribution boom with four support elements 21 on which the distribution boom is supported and which can be made of plastic, for example. Guides 23 are located laterally next to the support elements 21, which guide the distribution boom when it is deposited. Additional sensors can be provided in or on the storage area, for example to detect a correct storage position. The storage area is delimited on the sides by upper sections of the side regions 26, 27 and is open longitudinally to the front and rear.

[0033] Compared to the mast support bracket 20' of the Figure 1 The mast support device 20 according to the invention has, in particular, a larger extension in the longitudinal direction, with the support elements 21 being arranged in a central region on the upper side or in the storage area. In the specific example shown here, the longitudinal extension of the mast support device 20 essentially corresponds to its width, although other shapes and dimensions are of course possible.

[0034] In contrast to devices known from the prior art, the invention integrates several machine functions or their functional units into the mast support device 20. The mast support device 20 according to the invention is, in particular, a pre-assembled unit that is completely assembled at a box workstation and then bolted to the subframe 14. This allows the subframe 14 to be disassembled into three essential parts: the two longitudinal members and the mast support device 20 itself. This significantly simplifies shipping and transport.

[0035] In the Figure 4The substructure of a truck-mounted concrete pump 10 according to the invention is shown according to an exemplary embodiment, wherein the auxiliary frame 14 can be seen, which extends horizontally from the mast support 12 backwards to the rear of the machine. The placing boom is rotatably and pivotably mounted on the mast support 12 (not shown). The mast support device 20 according to the invention is located approximately in the rear third of the auxiliary frame 14 and is bolted to its longitudinal members. The auxiliary frame 14 is connected directly to the mast support 12 at the front and is also connected to it in a truss-like manner via two tension struts 16. The tension struts 16 run diagonally upwards from the auxiliary frame 14 in the area of the mast support device 20 to the mast support 12. Furthermore, two pivotable support legs 18, 19 of a support device are hinged to the mast support 12 on each side.

[0036] The Figures 5 and 6show further views of the mast support device 20 according to the invention, wherein the covers of the housing 22 are partially hidden in order to be able to recognize the components or functional units underneath.

[0037] The space-saving integration of numerous machine functions into the mast support device 20 according to the invention makes the assembly, unlike all other machines of this type, a true multifunctional assembly and solves the problem surrounding the very limited installation space between the placing boom and the pump unit, particularly in the case of large-boom truck-mounted concrete pumps.

[0038] In the Figures 2-6 In the embodiment shown, the following functional units are integrated into the mast support device 20: A hydraulic oil cooler 30 is installed in one of the side areas 27 of the housing 22 (cf. Figures 2 and 6). The classic arrangement of the oil cooler 30 above the pump unit on the platform or bracket (cf. Figure 1 ) or laterally on the mast support frame thus gives way to an integration of the oil cooler 30 laterally into the mast support device 20 by extending the assembly in the direction of travel of the machine.

[0039] On the opposite side, the mast support device 20 according to the invention thus offers space for the direct accommodation of a switch cabinet 34 (cf. Figures 3 and 5 ) in the side area 26 of the housing 22. Access to the components of the control cabinet 34 is via an openable and closable flap 24, which can be reached via a walkway 50, which can be fastened directly to the mast support device 20 via fastening means, as can a railing 52 (cf. Figure 3 ). In addition, further control components can be integrated into the mast support device 20.

[0040] As particularly in the Figures 2 and 5 As can be clearly seen, the mast control block 38 is also integrated into the mast support device 20, specifically in the upper section of the side area 26 on the side of the control cabinet 34. The mast control block 38 including emergency control elements is arranged lengthwise in the direction of travel and covered by the housing 22.

[0041] On the rear surface of the mast support device 20 there are various displays 36 which are clearly visible from the ground without any significant loss of ergonomics (see Figures 2 and 5 ).

[0042] At the front of the left side area 27 on the mast support device 20 there is also a conveyor pipe holder 44 to which the conveyor pipe 46 can be attached. It is also conceivable to Figure 4The tension struts 16 shown are to be attached directly to the mast support device 20. However, since high forces act on the tension struts 16, it may be necessary to integrate the fastenings of the tension struts 16 into the subframe 14. These could, however, be used to screw the mast support device 20 on again.

[0043] An auxiliary consumer control block 40 is located in the rear center of the mast support device 20 in the left side area 27 in the direction of travel and is easily accessible (see Figure 5 ).

[0044] Also integrated into the side area 27 is a hydraulic oil filter 32 (see Figure 6) The mast support device 20 has corresponding hydraulic and electrical connections 42 at central locations (particularly in the lower area) for connecting the functional units integrated into the mast support device 20 to the hydraulic and electrical circuits of the truck-mounted concrete pump 10. After mounting the mast support device 20, designed as a pre-assembled unit, on the subframe 14, only the hydraulic and electrical lines need to be connected via said connections 42.

[0045] The multifunctional mast support frame 20 thus becomes the central control and operating point for many machine functions. Last but not least, the central multifunctional assembly gives the concrete pump 10 a tidy and clear appearance, increasing its user-friendliness.

[0046] Furthermore, in the event of maintenance and repair, important maintenance components such as filters can be integrated into the mast support device 20, all of which are easily, simply and, above all, centrally accessible and concealed and protected by removable panels or covers.

[0047] Furthermore, it is conceivable to integrate further components or functional units such as support control blocks, high-pressure cleaners or a cistern filling system into the mast support device 20.

[0048] The installation positions of the various functional units shown in the exemplary embodiment discussed here are, of course, only examples and may vary. It is also conceivable to adapt the shape of the mast support device 20 to the installed functional units, for example, to extend the mast support device 20 accordingly in the direction of travel in order to accommodate the required number of components. If fewer functional units are required, the mast support device 20 can be correspondingly shorter.

[0049] Instead of installing the individual machine functions or functional units permanently in the mast support device 20 as shown here, they can be accommodated in module housings which can be flexibly and variably installed in corresponding module receptacles of the housing 22.

[0050] The Figures 7 and 8show the housing 22 of the mast support device 20 without functional units on the subframe 14. As can be seen here, the side areas 26, 27 are screwed to the longitudinal members of the subframe 14, which are designed as hollow profiles, via fastening clamps or clamp elements 60. The pump unit (not shown) is also attached there. It is conceivable that the mast support device 20 can be attached to the subframe 14 at various points. List of reference symbols:

[0051] 10 Self-propelled mobile concrete pump (truck-mounted concrete pump) 12 Mast support 14 Subframe 16 Tension strut 18 Rear support leg 19 Front support leg 20 Mast support device (mast support trestle) 20 Mast support trestle (state of the art) 21 Support element 22 Housing 23 Guide 24 Cover 26 Side area (right) 27 Side area (left) 30 Oil cooler 32 Oil filter 34 Control cabinet 36 Display device 38 Mast control block 40 Auxiliary consumer control block 42 Hydraulic connection 44 Delivery pipe holder 46 Delivery pipe 50 Walkway 52 Railing 60 Clamp element

Claims

1. Self-propelled mobile concrete pump (10), in particular a truck-mounted concrete pump, having a distribution mast mounted on a mast pedestal (12) in a rotatable and / or pivoted manner and a subframe (14) extending from the mast pedestal (12) to the rear of the concrete pump (10) for holding components of the concrete pump (10), wherein a mast support device (20) is arranged on the subframe (14) on which the distribution mast can be placed, wherein the mast support device (20) is designed as a pre-assembly module having at least one integrated functional unit for controlling and / or performing a machine function and comprises a housing (22) in which the at least one integrated functional unit is accommodated, wherein the mast support device (20) comprises at least one hydraulic connection (42) for connecting a hydraulic component integrated in the mast support device (20) to a hydraulic system of the concrete pump (10) and at least one electrical connection for connecting an electrical component integrated in the mast support device (20) to a circuit of the concrete pump (10), characterised in that the mast support device (20) has an H-shaped profile as seen along the subframe (14), the legs (26, 27) of which are each bolted to a longitudinal beam of the subframe (14) on the underside, and has a flat support area for the distribution mast on an upper side between the legs (26, 27), wherein the support area is delimited at the sides by upper sections of the side areas and is open to the front and rear in the longitudinal direction running along the subframe (14) and wherein a hydraulic oil cooler (30) is integrated in one of the legs (27) and a switch cabinet (34) with an openable and closable flap (24) is integrated in the other leg.

2. Concrete pump (10) according to claim 1, wherein one or more of the following functional units is / are integrated into the mast support device (20): - a filter device, in particular an oil filter (32); - an electric control unit; - an input device; - a display device (36); - a hydraulic control block, in particular a mast control block (38), agitator control block and / or auxiliary consumer control block (40).

3. Concrete pump (10) according to either one of the preceding claims, wherein the mast support device (20) comprises at least one fastening means for fastening a railing (52) and / or a walkway (50) and / or a hydraulic line and / or a pump unit and / or a tension strut (16) for the truss-like connection between the subframe (14) and the mast pedestal (12).

4. Concrete pump (10) according to any one of the preceding claims, wherein the mast support device (20) is releasably attached to the subframe (14).

5. Concrete pump (10) according to the preceding claim, wherein the mast support device (20) can be attached to the subframe (14) in at least two different positions.

6. Concrete pump (10) according to any one of the preceding claims, wherein the mast support device (20) has a modular design and comprises at least one module holder for releasably holding the at least one integrated functional unit, wherein the functional unit preferably comprises a module housing.

7. Concrete pump (10) according to the preceding claim, wherein the module holder and the at least one integrated functional unit, in particular the module housing thereof, each have at least one interface for the reversible formation of an electrical and / or hydraulic and / or mechanical connection.

8. Concrete pump (10) according to any one of the preceding claims, wherein the housing (22) comprises at least one openable cover (24), in particular a flap, for exposing the at least one integrated functional unit.