Construction machinery for transporting highly viscous materials

Abstract

The present invention relates to a construction machine for transporting high-viscosity materials, comprising an electric energy storage device, an electric drive device electrically connected to the electric energy storage device, a high-viscosity material pump unit, and a base frame, wherein the base frame has at least three support points spaced apart from one another in a direction intersecting the direction of gravity, the construction machine being supported on the ground at the three support points, a support surface of the construction machine extending between the support points in a top view of the construction machine, and the electric energy storage device, the electric drive device, the high-viscosity material pump unit, and the base frame are arranged relative to one another such that, in a top view of the construction machine, the center of gravity of the total mass of the construction machine is located within the support surface and is located at a distance along the longitudinal direction of the construction machine from the center of gravity of the geometric area of ​​the support surface.

Description

[Technical Field]

[0001] The present invention relates to a construction machine for transporting highly viscous materials. [Background technology]

[0002] Patent Document 1 describes a construction machine for transferring high-viscosity materials, which has a high-viscosity material pump unit designed to transfer high-viscosity materials. The high-viscosity material pump unit of the known construction machine can be driven by a drive motor of the construction machine to transfer the high-viscosity material. In this case, the drive motor can be configured as an electric motor. [Prior art documents] [Patent documents]

[0003] [Patent Document 1] European Patent Application Publication No. 3942181 Summary of the Invention [Problem to be solved by the invention]

[0004] The object of the present invention is to provide a construction machine for transporting highly viscous materials which, on the one hand, can be placed on the ground particularly safely and stably, and, on the other hand, can be transported particularly safely. [Means for solving the problem]

[0005] This problem is solved by the subject matter of claim 1. Preferred embodiments are the subject matter of the dependent claims.

[0006] The construction machine according to the present invention is used for transporting high-viscosity materials. The construction machine includes an electric energy storage device for storing electric energy and an electric drive device. The electric drive device is electrically connected to the electric energy storage device for supplying electric energy to the electric drive device. Electric energy drawn from the electric energy storage device can be at least partially converted into kinetic energy by the electric drive device. The construction machine further includes a high-viscosity material pump unit designed to transport high-viscosity materials. The high-viscosity material pump unit can be drivingly connected to the electric drive device. The construction machine further includes a base frame. The base frame supports the electric energy storage device, the electric drive device, and the high-viscosity material pump unit. In this case, the base frame extends longitudinally from a first end of the construction machine to a second end of the construction machine along a longitudinal direction of the construction machine. The base frame also extends transversely between first and second construction machine sides along a lateral direction of the construction machine. The longitudinal direction of the construction machine and the lateral direction of the construction machine are oriented perpendicular to each other and perpendicular to the direction of gravity. The base frame has three support points spaced apart in a direction intersecting the direction of gravity. At these support points, the construction machine is supported on the ground. In a top view of the construction machine, a support surface of the construction machine extends between the support points. In this case, the electric energy storage device, the electric drive device, the high-viscosity material pump unit, and the base frame are arranged relative to one another such that, in a top view of the construction machine, the center of gravity of the total mass of the construction machine is located within the support surface. Furthermore, the center of gravity of the total mass is located at a distance from the center of gravity of the geometric area of ​​the support surface along the longitudinal direction of the construction machine.

[0007] As a result of the above-described arrangement, the upright stability of the construction machine is particularly good, i.e., the risk of the construction machine tipping over is particularly low. On the other hand, the above-described arrangement advantageously enables particularly safe transportation of the construction machine as a load on a vehicle trailer or when the construction machine itself is designed as a vehicle trailer. This is because, by arranging the center of gravity of the total mass at a distance from the center of gravity of the support surface area, the total mass of the construction machine is distributed over the support points so that the load on at least one of the support points is smaller than the load on the other support points. In this way, a particularly good balance is achieved between the upright stability of the construction machine and its mobility, especially its maneuverability.

[0008] In this context, a support point can be understood as a geometric point at which a part of the weight force acting on the construction machine is ideally transferred to the ground. The transfer of the part of the weight force at one of the support points can be direct, i.e., by the support point directly contacting the ground, or indirect, i.e., via a component connected between them according to a predetermined purpose. In this case, each support point can be located in an associated contact surface of the construction machine through which the transfer of the weight force takes place. There can be at least three such contact surfaces, which are located at a distance from each other or at least two of which are directly connected to each other.

[0009] In this context, a thick material can be understood as a thick mixture of various substances. Thick materials are, for example, mortar, cement, screed, concrete, etc., respectively, in a mixable and / or transportable state. In the mixable and / or transportable state, the thick material has not yet hardened. In particular, thick materials are construction materials.

[0010] In an embodiment of the present invention, the construction machine includes a hydraulic pump driven by an electric drive and supplying a hydraulic circuit of the construction machine. In this case, the high-viscosity material pump unit is supplied with power from the hydraulic circuit for its drive. The high-viscosity material pump unit can thus be drivingly connected to the electric drive by the hydraulic pump and the hydraulic circuit. The hydraulic pump and the hydraulic circuit are particularly arranged so that the aforementioned positioning of the center of gravity of the total mass is achieved. Advantageously, the hydraulic pump and the hydraulic circuit can provide a particularly large drive force for the high-viscosity material pump unit.

[0011] In another embodiment of the invention, the center of gravity of the entire mass is substantially located on a central longitudinal axis of the construction machine, which extends along the longitudinal direction of the construction machine in a top view. The central longitudinal axis of the construction machine passes through the center between the two lateral sides of the construction machine. The tendency to tilt relative to the central longitudinal axis of the construction machine is particularly small.

[0012] In another embodiment of the invention, the construction machine is designed as a vehicle trailer. In this case, the base frame of the construction machine forms the chassis of the vehicle trailer. Alternatively, the base frame is attached to a separate chassis of the vehicle trailer. At least one wheel axle with at least two wheels facing each other along the transverse direction of the construction machine is arranged on the chassis. The chassis further comprises a towing device in front of the first end of the construction machine for coupling to a towing vehicle. The towing vehicle is preferably a motor vehicle, in particular a commercial vehicle. Therefore, the vehicle trailer is preferably designed as a motor vehicle trailer, in particular a commercial vehicle trailer. In this case, one of the support points is arranged on the towing device and on each of the wheels. As described above, different loads on the support points allow the towing device to be provided with a support load within legally permissible limits. Preferably, the least loaded support point is formed on the towing device. It has been found that a vehicle trailer is particularly easy to maneuver, especially when separated from the towing vehicle, due to an appropriate positioning of the center of gravity of the total mass. In this disconnected state, the least loaded support point can be transferred from the towing device to a support wheel of the vehicle trailer arranged at a distance from the wheel axis on the tow bar of the vehicle trailer, or to another support device arranged on the tow bar.

[0013] In another embodiment of the present invention, the towing device and a central axis, particularly a virtual central axis, assigned to at least one wheel axle are arranged at a distance from each other along the longitudinal direction of the construction machine. The central axis extends parallel to at least one wheel axle. In a top view of the construction machine, the center of gravity of the total mass divides the distance between the towing device and the central axis into a first section facing the towing device and a second section facing the central axis. In this case, the ratio of the first section to the second section is between 4 and 75, particularly between 5.7 and 66. In this way, a portion of the weight force acting on the construction machine that can be transmitted to the ground as a supporting load by the towing device and towing vehicle can be set so that the driving behavior of the towing vehicle and vehicle trailer pair is particularly good. Therefore, the vehicle trailer formed by the construction machine proves to be particularly stable and maneuverable at the same time.

[0014] In another embodiment of the invention, the construction machine has a support frame. In that case, the electric energy accumulator is arranged on the support frame. The support frame is also attached to the base frame. In particular, the electric energy accumulator is arranged at least partially, in particular completely, above the base frame in a direction opposite to the direction of gravity. This advantageously allows particularly good access to the electric energy accumulator from one of the sides of the construction machine, which in particular simplifies the installation and / or maintenance of the electric energy accumulator. However, the electric energy accumulator can also be partially lowered, i.e., lowered, relative to the support frame in the direction of gravity, which advantageously allows a particularly low center of gravity of the total mass in the direction of gravity.

[0015] In another embodiment of the invention, the construction machine has an intermediate frame on which at least one electrical storage module of the electrical energy storage device is arranged. In particular, the electrical energy storage device is attached to the support frame by the intermediate frame. In this case, the intermediate frame and the support frame are rigidly connected to each other or flexibly connected to each other for at least partial mechanical decoupling. In particular, the intermediate frame and the support frame are connected to each other at at least three connection points. The connection points can be formed by threaded joints and / or elastomer bearings. Rigid connections may prove to be particularly resistant to aging. In contrast, flexible connections advantageously allow the electrical storage module to be decoupled from torsional forces and / or travel vibrations acting on the support frame.

[0016] In another embodiment of the invention, the electric drive is arranged centrally or off-center between two sides of the construction machine along the lateral direction of the construction machine. Arranging the drive centrally between two sides of the construction machine facilitates centralizing the center of gravity of the total mass with respect to the lateral direction of the construction machine. On the other hand, arranging the electric drive off-center with respect to the lateral direction of the construction machine facilitates access to the electric drive, for example for assembly and / or maintenance purposes.

[0017] In another embodiment of the invention, an electric auxiliary drive of the construction machine for driving auxiliary equipment of the construction machine is electrically connected to the electric energy storage device. The electric auxiliary drive of the construction machine can be arranged so that the above-mentioned positioning of the center of gravity of the total mass is achieved. There can be multiple electric auxiliary drives and auxiliary equipment.

[0018] In another embodiment of the invention, the electric drive and the electric auxiliary drive are arranged at substantially the same distance from the first end of the construction machine along the longitudinal direction of the construction machine. Furthermore, the electric drive and the electric auxiliary drive are arranged opposite each other along the transverse direction of the construction machine, off-center between the two construction machine lateral sides, and symmetrically arranged relative to the central longitudinal axis of the construction machine, in particular in a top view of the construction machine. Advantageously, in this way, both the electric drive and the electric auxiliary drive are particularly accessible, in particular for assembly and / or maintenance purposes. The auxiliary drive can function as a counterweight for the electric drive.

[0019] In another, particularly alternative, embodiment of the invention, the electric drive and the electric auxiliary drive of the construction machine are arranged at a distance from each other in the longitudinal direction of the construction machine, in this way making particularly good use of the available construction space.

[0020] In another embodiment of the invention, an inverter is arranged in each of the electric drives and / or the electric auxiliary drives, which are electrically connected to an electric energy store by means of the inverter, and which advantageously converts a DC voltage available from the electric energy store into an AC voltage required for the operation of the electric drives and / or the electric auxiliary drives.

[0021] In another embodiment of the invention, the high-viscosity material pump unit has a water case for supplying cooling water and / or cleaning water to the transfer cylinder of the high-viscosity material pump unit. The water case is arranged along the longitudinal direction of the construction machine between the transfer cylinder of the high-viscosity material pump unit and the electric energy storage device. Preferably, the water case is arranged along the longitudinal direction of the construction machine between the electric drive and the electric energy storage device. The water case can be arranged between the actuating cylinder and the transfer cylinder of the high-viscosity material pump unit. The actuating cylinder can be supplied from the hydraulic circuit of the construction machine. However, the actuating cylinder can also be designed as an electric linear drive of the electric drive. Instead of the actuating cylinder, an electric linear drive can be provided. The electric energy storage device can be arranged on the actuating cylinder or on the linear drive.

[0022] In another embodiment of the present invention, the water case is closed by a removable lid of the high-viscosity material pump unit. The lid is preferably removable from the water case in a direction opposite to the direction of gravity. In this case, the construction machine has free space for removing the lid. The free space is located above the water case in a direction opposite to the direction of gravity. Advantageously, the water case can provide a maintenance opening accessible from above. Via this maintenance opening, wear parts of the high-viscosity material pump unit can be replaced for maintenance of the high-viscosity material pump unit.

[0023] Other advantages and features of the present invention will become apparent from the claims and from the following description of preferred exemplary embodiments of the invention, which are illustrated with the drawings, in which the same reference symbols refer to the same or similar or functionally identical parts.

[0024] It goes without saying that the features mentioned above and those to be described below can be used not only in the respective combinations described, but also in other combinations or alone, without departing from the scope of the invention. [Brief explanation of the drawings]

[0025] [Figure 1] 1 is a schematic perspective view of an embodiment of a construction machine according to the present invention. [Figure 2] FIG. 2 is another schematic perspective view of the construction machine according to FIG. 1. [Figure 3] FIG. 3 is a schematic side view of the construction machine according to FIGS. 1 and 2. [Figure 4] FIG. 4 is a schematic plan view of the construction machine shown in FIGS. 1 to 3. [Figure 5] FIG. 10 is a schematic perspective view of another embodiment of a construction machine according to the present invention. [Figure 6] FIG. 6 is a schematic perspective view of the construction machine shown in FIG. 5. [Figure 7] FIG. 7 is a schematic side view of the construction machine according to FIGS. 5 and 6. [Figure 8] FIG. 8 is a schematic plan view of the construction machine shown in FIGS. 5 to 7. [Figure 9] FIG. 9 is a schematic perspective view of the installation of an electric energy storage device of the construction machine according to FIGS. 1 to 4 or 5 to 8. [Figure 10] FIG. 9 is a schematic perspective view of the installation of an electric energy storage device of the construction machine according to FIGS. 1 to 4 or 5 to 8. DETAILED DESCRIPTION OF THE INVENTION

[0026] The construction machine 1 is intended for transporting high-viscosity materials. High-viscosity materials are, for example, construction materials that are present in a thick, high-viscosity form. High-viscosity materials can be thick mixtures of various substances. High-viscosity materials are, in particular, mortar, cement, screed or concrete in a mixable and / or transportable state.

[0027] The construction machine 1 has an electric energy storage device 2 for storing electric energy. The construction machine 1 further comprises an electric drive device 3. For the supply of electric energy to the electric drive device 3, the electric drive device is electrically connected to the electric energy storage device 2. The electric energy from the electric energy storage device 2 can be converted into kinetic energy by the electric drive device 3. The construction machine 1 further comprises a high-viscosity material pump unit 4. The high-viscosity material pump unit 4 is designed to transport high-viscosity material. The high-viscosity material pump unit 4 can be drivingly connected to the electric drive device 3.

[0028] The high-viscosity material pump unit 4 may have a transfer cylinder including a variable-volume transfer chamber. To change the volume of the transfer chamber, particularly in the opposite direction, the transfer cylinders may each have an adjustable transfer piston. The high-viscosity material pump unit 4 may further include an S-shaped pipe, one end of which is fluidly connected to a discharge pipe that serves as a pump outlet. The S-shaped pipe may be disposed in a stock chamber for storing the high-viscosity material, which can be filled from above. In this case, one end of the S-shaped pipe in the stock chamber may be rotatably attached to the discharge pipe. The variable-volume transfer chamber may open into the stock chamber. The S-shaped pipe may be rotatable relative to the transfer chamber so that it can be fluidly connected to one of the transfer chambers alternately within the stock chamber. In this way, the interaction between the rotation of the S-shaped pipe and the volume change of the transfer chamber allows the high-viscosity material in the stock chamber to be alternately sucked into the transfer chamber and then pumped out via the transfer chamber, through the S-shaped pipe, and out via the discharge pipe. An agitator may be disposed in the stock chamber of the high-viscosity material pump unit 4.

[0029] The construction machine 1 further includes a base frame 5. In this case, the base frame 5 supports the electric energy storage device 2, the electric drive device 3, and the high-viscosity material pump unit 4. The base frame 5 extends along the construction machine longitudinal direction L. In this case, the base frame 5 extends from a construction machine first end 6 to a construction machine second end 7 along the construction machine longitudinal direction L. A construction machine lateral direction Q extends perpendicular to the construction machine longitudinal direction L. In this case, the base frame 5 extends laterally between a first construction machine side surface 8 and a second construction machine side surface 9 along the construction machine lateral direction Q. Both the construction machine longitudinal direction L and the construction machine lateral direction Q are oriented perpendicular to the direction of gravity G. Therefore, the construction machine longitudinal direction L, the construction machine lateral direction Q, and the direction of gravity G form three axes of a three-dimensional Cartesian coordinate system.

[0030] The base frame 5 has at least three support points P1, P2, and P3. The support points P1, P2, and P3 are arranged spaced apart from one another in a direction intersecting the direction of gravity G. In this case, a support point is understood to be a geometric point on the construction machine 1 that shares at least a portion of the weight force acting on the construction machine 1. For example, at such a support point, a proportion of the weight force can be transmitted directly to the ground U on which the construction machine 1 is placed. However, it is also possible to transmit a portion of the weight force at such a support point not directly to the ground U but to another piece of equipment or device also placed on the ground U. Each support point P1, P2, and P3 can be located within the contact surface of a support means of the construction machine 1. Such a support means can be the wheels 14, the columns 28, the support wheels 16, the traction device 15, the skids, or the chain or crawler chassis of the construction machine 1.

[0031] In a top view of the construction machine 1, a support surface A of the construction machine 1 extends between the support points P1, P2, and P3. The support surface A is thus obtained by parallel projection of the support points P1, P2, and P3 in the direction of gravity, for example as a projection surface onto the ground surface U. In this case, each of the support points P1, P2, and P3 may define a corner of the support surface A. However, multiple support points P1, P2, and P3 may also be arranged on linearly formed sides of the support surface A. In the embodiment shown in the figures, there are exactly three support points P1, P2, and P3, resulting in a triangular support surface A. However, it is also conceivable to have more than three support points P1, P2, and P3, resulting in a support surface A with a non-triangular shape, for example a quadrilateral or other polygonal shape.

[0032] The electric energy storage device 2, the electric drive device 3, the high-viscosity material pump unit 4, and the base frame 5 primarily determine the position of the center of gravity SM of the total mass of the construction machine 1. In this case, the electric energy storage device 2, the electric drive device 3, the high-viscosity material pump unit 4, and the base frame 5 are arranged relative to one another such that, in a top view of the construction machine 1, the center of gravity SM of the total mass of the construction machine 1 is located within a support surface A. The support surface A has a geometric area center of gravity SA. In a top view of the construction machine 1, the center of gravity SM of the total mass is located at a distance from the geometric area center of gravity SA. This can be seen in particular in Figures 4 and 8.

[0033] In the embodiment of Figures 1 to 4, the construction machine 1 has a hydraulic pump 10. The hydraulic pump 10 supplies a hydraulic circuit 11 of the construction machine 1. The hydraulic pump 10 is driven by an electric drive 3. The drive connection between the electric drive 3 and the high-viscosity material pump unit 4 is realized by the hydraulic pump 10 and the hydraulic circuit 11. For this purpose, each transfer cylinder of the high-viscosity material pump unit 4 is respectively connected to a hydraulic cylinder of the high-viscosity material pump unit 4, which can be, for example, mechanically connected, and the hydraulic cylinder is supplied by the hydraulic circuit 11. Each of the transfer cylinders can, as described above, for example, have a transfer piston by means of which the volume of the transfer volume associated with the respective transfer cylinder can be changed. Each transfer piston can be connected to a piston rod, which is connected to the hydraulic piston of the respectively assigned hydraulic cylinder on the side opposite the respective transfer piston. When hydraulic pressure is applied to one of the hydraulic pistons via the hydraulic circuit 11 to adjust the hydraulic piston, the adjustment of the hydraulic piston is also transmitted to the respective transfer piston via the piston rod, which results in a change in the volume of the associated transfer chamber, i.e., hydraulic pressure is supplied from the hydraulic circuit 11 to the high-viscosity material pump unit 4 to drive the high-viscosity material pump unit 4. The hydraulic pump 11 is supported by, for example, the base frame 5.

[0034] In another embodiment of the construction machine 1 according to FIGS. 5 to 8, unlike the embodiment of FIGS. 1 to 4, the hydraulic circuit 11 and the hydraulic pump 10 are not present. Instead, the electric drive 3 is directly drivingly connected to the pump unit 4. For this purpose, each of the transfer cylinders of the high-viscosity material pump unit 4 can be drivingly connected by an electric actuator of the electric drive 3. For example, each transfer cylinder can be provided with an electric linear drive by means of which the volume of the transfer chamber of the transfer cylinder can be changed. For this purpose, the transfer piston of the transfer cylinder can be adjusted by means of the electric linear drive of the electric drive 3. That is, instead of the hydraulic cylinders of the embodiment according to FIGS. 1 to 4, an electric linear drive can be provided. Instead of the rotary hydraulic drive, an electric rotary drive can be provided, for example, to rotate the agitator and / or to rotate the S-shaped pipe.

[0035] In a top view of the construction machine 1, with particular reference to Figures 4 and 8, the centre of gravity SM of the total mass is located substantially on the construction machine central longitudinal axis LA. The construction machine central longitudinal axis LA extends along the construction machine longitudinal direction L. In a top view, the electrical energy storage device 2 can be, for example, completely contained in half the longitudinal direction of the construction machine 1 along the construction machine longitudinal direction L. In that case, this can be the longitudinal half of the construction machine 1 including the construction machine first end 6.

[0036] In the illustrated embodiment, the construction machine 1 is designed as a vehicle trailer 12. The base frame 5 then forms the chassis 13 of the vehicle trailer 12. Alternatively, the base frame 5 can be attached to a separately realized chassis 13 of the vehicle trailer 12, but this is not shown in the figures. The chassis 13 can be designed as a chassis frame. At least one wheel axle RA is arranged on the chassis 13. The wheel axle RA has at least two, here exactly two, wheels 14 that are opposite each other in the transverse direction Q of the construction machine. There can be several wheel axles RA that are arranged at a distance from each other in the longitudinal direction L of the construction machine and each have at least two wheels 14, for example in the form of a tandem axle.

[0037] The chassis 13 has a towing device 15 at the front of the first end 6 of the construction machine for connecting the vehicle trailer 12 to a towing vehicle. The towing vehicle can be a tractor, for example, a car. The towing vehicle can be equipped with a coupling device configured complementary to the towing device 5. When the vehicle trailer 12 is connected to the towing vehicle, the towing device 15 can rest on the coupling device of the towing vehicle, transmitting a support load in the direction of gravity G. The towing vehicle itself is supported on the ground U. Thus, the vehicle trailer 12 is supported on the ground U by the towing vehicle at its towing device 15. The wheels 14 additionally support the vehicle trailer 12 on the ground U. Thus, one of support points P1, P2, P3 is located on each of the towing device 15 and the wheels 14.

[0038] At least one wheel axle RA is assigned a central axis RM extending along the transverse direction Q of the construction machine. When only a single wheel axle RA is present, as in the illustrated embodiment, the central axis RM corresponds to the wheel axle RA. When multiple wheel axles RA are present, the central axis RM passes through the center between the wheel axles RA. The traction device 15 and the central axis RM are arranged at a distance D from each other along the longitudinal direction L of the construction machine. In a top view of the construction machine 1, the center of gravity SM of the total mass divides the distance D between the traction device 15 and the central axis RM into a first section D1 and a second section D2. In this case, the first section D1 faces the traction device 15, and the second section D2 faces the central axis RM. That is, the first section D1 extends from the traction device 15 to the center of gravity SM of the total mass, and the second section D2 extends from the central axis RM to the center of gravity SM of the total mass. The ratio of the first section D1 to the second section D2 is between 4 and 75, in particular between 5.7 and 66. In the illustrated embodiment, the ratio of the first section D1 to the second section D2 amounts to 7.7. In another preferred embodiment, the ratio of the first section D1 to the second section D2 is 65.7. For example, the total mass of the construction machine 1 amounts to 3500 kg.

[0039] The construction machine 1 has, for example, a support frame 17. In that case, the electric energy store 2 is arranged on the support frame 17. The support frame 17 is attached to a base frame 5. In that case, the electric energy store 2 is arranged at least partially above the base frame 5 in the direction opposite to the direction of gravity G. In this case, the electric energy store 2 is arranged completely above the base frame 5. However, it is also conceivable that the electric energy store 2 is alternatively arranged in the direction of gravity G so as to at least partially overlap the base frame 5, resulting in a lowered arrangement of the electric energy store 2 with respect to the base frame 5.

[0040] The construction machine 1 has, for example, an intermediate frame 18 on which at least one electrical storage module 19 of the electrical energy store 2 is arranged. The intermediate frame 18 and the support frame 17 are rigidly connected to each other or flexibly connected to each other for at least partial mechanical isolation. The intermediate frame 18 allows the electrical energy store 2 to be attached to the support frame 17. Here, the intermediate frame 18 and the support frame 17 are connected to each other by three connection points 20, as can be seen in particular in FIGS. 9 and 10 . However, more than the three connection points 20 shown can also be provided to connect the intermediate frame 18 and the support frame 17. Depending on the circumstances, fewer than three connection points 20, i.e., one or two connection points 20, can also be provided. The accommodation of the electrical storage module 19 by the intermediate frame 18 and the support frame 19 as shown in FIGS. 9 and 10 is possible in both the embodiments according to FIGS. 1 to 4 and 5 to 8 . The at least three connection points 20 can be realized by threaded joints 21. Alternatively or additionally, elastomer bearings 22 can be provided at each connection point 20 in order to achieve a flexible connection between the intermediate frame 18 and the support frame 17. This allows partial decoupling of the intermediate frame 18 from the support frame 17 and the base frame 5, so that torsions or vibrations of the base frame 5 that may occur during operation of the construction machine 1 are not transmitted to the electrical energy store 2, or at least only transmitted to a reduced extent.

[0041] The electrical energy storage device 2 includes at least two electrical storage modules 19. Here, the electrical energy storage device 2 includes exactly two electrical storage modules 19 arranged adjacent to each other along the longitudinal direction L of the construction machine. Each of the electrical storage modules 19 can have at least one battery cell pack. Here, each of the electrical storage modules 19 has three such battery cell packs, which are stacked along the direction of gravity G.

[0042] The electric drive 3 is arranged, for example, between the two machine lateral sides 8, 9 along the construction machine lateral direction Q. The electric drive 3 is arranged off-center here between the two machine lateral sides 8, 9. Alternatively, the electric drive 3 can be arranged centrally between the construction machine lateral sides 8, 9. The construction machine 1 here has an electric auxiliary drive 23. The electric auxiliary drive 23 is used to drive auxiliary equipment of the construction machine 1. The electric auxiliary drive 23 is electrically connected to the electric energy storage device 2. In this case, the electric drive 3 and the electric auxiliary drive 23 are arranged at substantially the same distance from the construction machine first end 6 along the construction machine longitudinal direction L. The electric drive 3 and the electric auxiliary drive 23 are arranged opposite each other along the construction machine lateral direction Q and off-center between the two construction machine lateral sides 8, 9. In particular, the electric drive 3 and the electric auxiliary drive 23 are arranged symmetrically with respect to the construction machine central longitudinal axis L in a top view of the construction machine 1.

[0043] Alternatively, the electric drive 3 and the electric auxiliary drive 23 can be arranged at a distance from each other along the longitudinal direction of the construction machine. The electric drive 3 and the electric auxiliary drive 23 can be arranged at the same height or offset from each other along the direction of gravity G. There can be multiple electric auxiliary drives 23. The electric drive 3 and multiple electric auxiliary drives 23 can be arranged left and right, above and below, and / or behind each other along the longitudinal direction L of the construction machine, along the transverse direction Q of the construction machine, and / or along the direction of gravity G. At least one of the electric drive 3 and / or the electric auxiliary drive 23 can be arranged offset from the electric energy storage device 2 along the longitudinal direction L of the construction machine. The electric drive and / or the electric auxiliary drive 23 can be arranged below the electric energy storage device 2 with respect to the direction of gravity G. The electric energy storage device 2 can be arranged below the base frame 5.

[0044] For example, the inverter 24 of the construction machine 1 is arranged on the electric drive 3. Alternatively or additionally, the inverter 24 is arranged on the electric auxiliary drive 23. Here, the electric drive 3 and the electric auxiliary drive 23 are each electrically connected to the electric energy storage device 2 by the inverter 24. The electrical system of the construction machine 1 is, for example, mounted directly on the upper surface of the electric energy storage device 2 located above, opposite to the direction of gravity G. The electrical system can have at least one electronic control device for open-loop and / or closed-loop control of the electric drive 3 and / or the electric auxiliary drive 23. Furthermore, the electrical system can include an electronic charging device for the charging process of the electric starter battery and / or the electric energy storage device 3, and / or an electrical converter and / or an electrical distributor.

[0045] The high-viscosity material pump unit 4 includes a water case 25 for supplying cooling water and / or cleaning water to the transfer cylinder of the high-viscosity material pump unit 4. The cooling water and / or cleaning water can be accommodated in the interior space of the water case 25. The piston rod and the underside of the transfer piston of the transfer cylinder opposite the transfer chamber of the transfer cylinder can be moistened with the cooling water and / or cleaning water accommodated in the water case 25. The cooling water and / or cleaning water is used to lubricate and / or clean the piston rod. The water case 25 is arranged between the transfer cylinder of the high-viscosity material pump unit 4 and the electric energy storage device 2 along the longitudinal direction L of the construction machine. For example, the water case 5 is arranged between the electric drive 3 and the electric energy storage device 2 along the longitudinal direction L of the construction machine. The water case 5 can be arranged between the transfer cylinder of the high-viscosity material pump unit 4 and a hydraulic or electric linear drive, each assigned to one of the transfer cylinders.

[0046] The water case 25 is closed, for example, by a removable lid 26 of the high-viscosity material pump unit 4. In this case, the construction machine 1 has a free space 27. The free space 27 is used to remove the lid 26 from the water case 25. The free space 27 is arranged above the water case 25 in the direction opposite to the direction of gravity G. The water case 25 can form a maintenance opening for maintenance of the high-viscosity material pump unit 4. Wear parts of the high-viscosity material pump unit 4 can be replaced, particularly periodically, through the maintenance opening. The water case 25 has, for example, a drainage device that can drain cooling water and / or cleaning water from the internal space of the water case 25 to the outside. The drainage device of the water case 25 can be operated from above the internal space of the water case 25, for example, by removing the lid 26.

[0047] The construction machine 1 may for example have a temperature regulation system, which is used to cool and / or heat the electrical energy store 2. The construction machine 1 may have a casing which is mounted on the carrying frame 5 and which shields the components of the construction machine 1 from the environment external to the construction machine 1.

Claims

1. A construction machine (1) for transporting high viscosity materials, the construction machine (1) comprising: an electrical energy storage device (2) for storing electrical energy; an electric drive (3) electrically connected to the electric energy storage (2) for supplying electric energy; a high viscosity material pump unit (4) designed to transport high viscosity materials; a base frame (5), The base frame supports the electric energy storage device (2), the electric drive device (3) and the high-viscosity material pump unit (4); the base frame extends longitudinally from a construction machine first end (6) to a construction machine second end (7) along a construction machine longitudinal direction (L) and laterally between a first construction machine side surface and a second construction machine side surface (8, 9) along a construction machine lateral direction (Q), the construction machine longitudinal direction (L) and the construction machine lateral direction (Q) being oriented perpendicular to each other and perpendicular to a direction of gravity (G); the construction machine (1) has at least three support points (P1, P2, P3) spaced apart from one another in a direction intersecting the direction of gravity (G), the construction machine (1) is supported on the ground (U) at the three support points, and a support surface (A) of the construction machine (1) extends between the support points (P1, P2, P3) in a top view of the construction machine (1); The electric energy storage device (2), the electric drive device (3), the high-viscosity material pump unit (4) and the base frame (5) are arranged relative to one another such that, in a top view of the construction machine (1), the center of gravity (SM) of the total mass of the construction machine (1) is located within the support surface (A) and is spaced apart from the center of gravity (SA) of the geometric area of ​​the support surface (A) along the longitudinal direction (L) of the construction machine.

2. The construction machine (1) The system further comprises a hydraulic pump (10) driven by the electric drive unit (3) and supplying a hydraulic circuit (11); The high viscosity material pump unit (4) is supplied with hydraulic fluid from the hydraulic circuit (11) for driving. A construction machine (1) according to claim 1, characterized in that it

3. The center of gravity (SM) of the total mass is substantially located on a construction machine central longitudinal axis (LA) extending along the construction machine longitudinal direction (L) in a top view. A construction machine (1) according to claim 1 or 2, characterized in that it

4. The construction machine (1) is designed as a vehicle trailer (12), The base frame (5) forms the chassis (13) of the vehicle trailer (12) or is attached to the chassis (13) of the vehicle trailer (12); At least one wheel axle (RA) having at least two wheels (14) facing each other along the construction machine lateral direction (Q) is arranged on the chassis (13), and the chassis (13) has a towing device (15) on the front side of the construction machine first end (6) for coupling to a towing vehicle; One of the support points (P1, P2, P3) is located on each of the traction devices (15) and the wheels (14). A construction machine (1) according to any one of claims 1 to 3, characterized in that it

5. the traction device (15) and the central axis (RM) assigned to the at least one wheel axle (RA) are arranged at a distance (D) from each other along the longitudinal direction (L) of the construction machine, The center of gravity (SM) of the total mass divides a distance (D) between a traction device (15) and a central axis (RM) into a first section (D1) facing the traction device (15) and a second section (D2) facing the central axis (RM) when viewed from above the construction machine (1); The ratio of the first section (D1) to the second section (D2) is 4 to 75, in particular 5.6 to 66. A construction machine (1) according to claim 4, characterized in that it

6. the construction machine (1) has a support frame (17), the electrical energy storage device (2) is disposed on the support frame (17), and the support frame (17) is attached to a base frame (5); In particular, the electrical energy store (2) is at least partially, in particular completely, arranged above the base frame (5) in a direction opposite to the direction of gravity (G). A construction machine (1) according to any one of claims 1 to 5, characterized in that it

7. the construction machine (1) has an intermediate frame (18), and at least one electrical storage module (19) of the electrical energy store (2) is arranged on the intermediate frame (18), in particular such that the electrical energy store (2) is attached to the support frame (17) by the intermediate frame (18), The intermediate frame (18) and the support frame (17) are rigidly connected to one another, in particular at at least three connection points (20), or are flexibly connected to one another for at least partial mechanical separation from one another. A construction machine (1) according to claim 6, characterized in that it

8. The electric drive (3) is arranged centrally or off-center between the two construction machine sides (8, 9) along the construction machine transverse direction (Q). A construction machine (1) according to any one of claims 1 to 7, characterized in that it

9. An electric auxiliary drive (23) of the construction machine (1) for driving auxiliary equipment of the construction machine (1) is electrically connected to the electric energy storage (2). A construction machine (1) according to any one of claims 1 to 8, characterized in that it

10. The electric drive unit (3) and the electric auxiliary drive unit (23) are arranged at substantially the same distance from the construction machine first end (6) along the construction machine longitudinal direction (L), opposite each other along the construction machine lateral direction (Q), off-center between the two construction machine side surfaces (8, 9), and are arranged symmetrically with respect to the construction machine central longitudinal axis (LA) in a top view of the construction machine (1). A construction machine (1) according to claim 9, characterized in that it

11. The electric drive unit (3) and the electric auxiliary drive unit (23) of the construction machine (1) are arranged apart from each other along the longitudinal direction (L) of the construction machine. A construction machine (1) according to any one of claims 1 to 10, characterized in that

12. An inverter (24) is arranged in the electric drive (3) and / or the electric auxiliary drive (23), and the electric drive (3) and / or the electric auxiliary drive (23) are electrically connected to the electric energy storage (2) via the inverter. A construction machine (1) according to any one of claims 1 to 11, characterized in that it

13. The high-viscosity material pump unit (4) has a water case (25) for supplying cooling water and / or cleaning water to the high-viscosity material pump unit (4), The water case (25) is arranged along the longitudinal direction (L) of the construction machine between the transfer cylinder of the high-viscosity material pump unit (4) and the electric energy storage device (2), and in particular between the electric drive device (3) and the electric energy storage device (2). A construction machine (1) according to any one of claims 1 to 12, characterized in that it

14. The water case (25) is closed by a removable lid (26) of the high viscosity material pump unit (4), The construction machine (1) has a free space (27) for removing the lid (26), and the free space is arranged above the water case (25) in a direction opposite to the direction of gravity (G). A construction machine (1) according to any one of claims 1 to 13, characterized in that

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