Construction machine for conveying viscous materials

Abstract

The invention relates to a construction machine for conveying viscous materials, comprising an electric energy store, an electric drive which is electrically connected to the electric energy store, a viscous material pump unit, and a machine frame which has at least three support points which are spaced apart from one another transversely to the direction of gravity, the construction machine is supported relative to the base at the supporting points, a supporting surface of the construction machine extends between the supporting points in a top view of the construction machine, and the electric energy storage device, the electric drive device, the viscous material pump unit and the machine frame are arranged relative to one another. The total mass center of gravity of the construction machine is arranged within the support surface in a top view of the construction machine and is spaced apart from the geometric surface center of gravity of the support surface in the longitudinal direction of the construction machine.

Description

Technical Field

[0001] The invention relates to a construction machine for conveying viscous materials. Background Art

[0002] A construction machine for conveying viscous material is known from EP 3942181 A1, which has a viscous material pump unit configured to convey viscous material. The viscous material pump unit of the known construction machine can be driven by means of a drive motor of the construction machine in order to convey the viscous material. Here, the drive motor can be configured as an electric motor. Summary of the invention

[0003] The object of the present invention is to provide a construction machine for conveying viscous materials which, on the one hand, can be particularly reliably and stably parked on a substrate and, on the other hand, can be transported particularly reliably.

[0004] This object is achieved by the subject matter of claim 1. Preferred embodiments are the subject matter of the dependent claims.

[0005] The construction machine according to the present invention is used for conveying viscous materials. The construction machine has an electric accumulator for storing electric energy and an electric drive. The electric drive is electrically connected to the electric accumulator so as to supply electric energy thereto. With the aid of the electric drive, the electric energy obtained from the electric accumulator can be at least partially converted into kinetic energy. In addition, the construction machine has a viscous material pump unit, which is configured to convey viscous materials. The viscous material pump unit can be connected to the electric drive for driving. In addition, the construction machine has a frame. The frame carries the electric accumulator, the electric drive and the viscous material pump unit. Here, the frame extends longitudinally from the first construction machine end to the second construction machine end along the longitudinal direction of the construction machine. In addition, the frame extends transversely between the first and second construction machine sides along the transverse direction of the construction machine. The longitudinal direction of the construction machine and the transverse direction of the construction machine are oriented perpendicularly to each other and perpendicularly to the direction of gravity. The frame has at least three support points spaced apart from each other transversely to the direction of gravity. At the support points, the construction machine is supported relative to the base. In a top view of the construction machine, the support surface of the construction machine extends between the support points. The electrical energy storage device, the electric drive, the viscous material pump unit and the machine frame are arranged relative to one another in such a way that the total mass center of gravity of the construction machine is arranged within the support surface in a top view of the construction machine. Furthermore, the total mass center of gravity is arranged at a distance from the geometric surface center of gravity of the support surface in the longitudinal direction of the construction machine.

[0006] Due to the above-described arrangement, on the one hand, a particularly good stability of the construction machine is achieved, i.e., the susceptibility of the construction machine to tipping over is particularly low. On the other hand, the above-mentioned arrangement advantageously enables particularly reliable transportation of the construction machine, in particular when the construction machine is used as a load on a trailer or when the construction machine is designed as a trailer itself. This is because by arranging the center of gravity of the total mass at a distance from the center of gravity of the surface of the support surface, the total mass of the construction machine can be distributed to the support points in such a way that at least one of the support points is subjected to a lower load than the other support points. In this way, a particularly good compromise is achieved between stability and mobility, in particular maneuverability, of the construction machine.

[0007] In the present context, a "support point" is to be understood as a geometric point at which a portion of the weight acting on the construction machine is ideally transferred to the base. The transfer of a portion of the weight at one of the support points can take place directly, i.e., by direct contact of the support point with the base, or indirectly, i.e., by means of components connected in a prescribed manner. In this case, the support points can each be arranged within an associated support surface of the construction machine, at which the weight transfer takes place. There can be at least three such support surfaces, which are arranged at a distance from one another or of which at least two support surfaces merge directly into one another.

[0008] In the present context, a "viscous material" is intended to be understood as a paste-like mixture of different materials. A viscous material is, for example, mortar, cement, mortar or concrete, each in a mixable and / or conveyable state. In the mixable and / or conveyable state, the viscous material has not yet hardened. The viscous material is in particular a building material.

[0009] In the embodiment of the invention, the construction machine has a hydraulic pump which is driven by means of an electric drive and which feeds a hydraulic circuit of the construction machine. In this case, the viscous material pump unit is fed by the hydraulic circuit in order to drive it. The viscous material pump unit can thus be connected to the electric drive by means of the hydraulic pump and the hydraulic circuit. The hydraulic pump and the hydraulic circuit are arranged in particular in such a way that the aforementioned positioning of the center of gravity of the total mass is achieved. Particularly high drive power can advantageously be provided by means of the hydraulic pump and the hydraulic circuit for the viscous material pump unit.

[0010] In another embodiment of the invention, the center of gravity of the total mass is arranged in a top view substantially on a central longitudinal axis of the construction machine extending in the longitudinal direction of the construction machine. The central longitudinal axis of the construction machine extends centrally between the two construction machine sides. This results in a particularly small tilting tendency relative to the central longitudinal axis of the construction machine.

[0011] In another design of the present invention, the construction machine is configured as a trailer. Here, the frame of the construction machine forms the chassis of the trailer. As an alternative, the frame is fixed to a separate chassis of the trailer. At least one axle is arranged on the chassis, and the axle has at least two wheels opposite to each other along the transverse direction of the construction machine. In addition, the chassis has a traction device for coupling with a tractor at the front side at the first construction machine end. The tractor is preferably a motor vehicle, especially a commercial vehicle. The trailer is therefore preferably configured as a motor vehicle trailer, especially a commercial vehicle trailer. Here, one of the support points is arranged on the traction device and on each wheel. The different loads of the support points explained above allow the support load to be constructed on the tractor within the scope permitted by law. The support point subjected to the minimum load is preferably constructed on the traction device. The trailer is particularly maneuverable, especially in the state of being disengaged from the tractor, by the positioning of the center of gravity of the total mass. In this uncoupled state, the least loaded support point can be moved from the traction device to a supporting wheel of the trailer, which is arranged on the drawbar of the trailer at a distance from the wheel axle, or to another supporting device arranged on the drawbar.

[0012] In another embodiment of the present invention, the traction device and the in particular virtual center axis assigned to at least one axle are arranged with a distance relative to each other along the longitudinal direction of the construction machine. The center axis extends parallel to at least one axle. The total mass center of gravity divides the distance between the tractor and the center axis into a first section toward the traction device and a second section toward the center axis in a top view of the construction machine. Here, the ratio of the first section to the second section is 4 to 75, in particular 5.7 to 66. In this way, the proportion of the weight acting on the construction machine that can be transmitted to the base as a supporting load by means of the traction device and by means of the tractor can be determined, thereby producing a particularly good driving performance of the vehicle group consisting of the tractor and the trailer. The trailer constructed by the construction machine in the vehicle group is accordingly proven to be particularly stable and at the same time maneuverable.

[0013] In another embodiment of the invention, the construction machine has a support frame. Here, the electric energy storage device is arranged on the support frame. The support frame is in turn mounted on the machine frame. In particular, the electric energy storage device is arranged at least partially, in particular completely, above the machine frame, counter to the direction of gravity. Advantageously, the electric energy storage device can thus be particularly easily accessible from one of the sides of the construction machine, which in particular simplifies the installation of the electric energy storage device and / or its maintenance. However, the electric energy storage device can also be partially lowered, i.e. sunk, relative to the support frame in the direction of gravity, which advantageously enables a particularly low arrangement of the center of gravity of the total mass with respect to the direction of gravity.

[0014] In another embodiment of the invention, the construction machine has an intermediate frame. At least one electrical storage module of an electrical energy accumulator is arranged on the intermediate frame. In particular, the electrical energy accumulator is mounted on the support frame by means of the intermediate frame. Here, the intermediate frame and the support frame are connected to each other fixedly or flexibly for at least partial mechanical decoupling from each other. In particular, the intermediate frame and the support frame are connected to each other at least three connections. The connections can be formed by threaded connections and / or elastomer bearings. The fixed connection can prove to be particularly resistant to aging. In contrast, the flexible connection advantageously allows the electrical storage module to be decoupled from torsional forces and / or travel vibrations acting on the support frame.

[0015] In another embodiment of the invention, the electric drive is arranged centrally or eccentrically between the two construction machine sides in the transverse direction of the construction machine. The central arrangement of the drive between the two construction machine sides facilitates the central positioning of the center of gravity of the total mass with respect to the transverse direction of the construction machine. In contrast, the eccentric arrangement of the electric drive with respect to the transverse direction of the construction machine is superior in terms of accessibility of the electric drive, for example for installation and / or maintenance purposes.

[0016] In another embodiment of the invention, an electric auxiliary drive of a construction machine for driving an auxiliary unit of the construction machine is electrically connected to an electric energy storage device. The electric auxiliary drive of the construction machine can be arranged in such a way that the above-mentioned positioning of the center of gravity of the total mass is achieved. There can be a plurality of electric auxiliary drives and auxiliary units.

[0017] In another embodiment of the invention, the electric drive and the electric auxiliary drive are arranged at substantially the same distance relative to the first construction machine end in the longitudinal direction of the construction machine. Furthermore, the electric drive and the electric auxiliary drive are arranged eccentrically opposite one another in the transverse direction of the construction machine between the two construction machine sides, in particular symmetrically with respect to the central longitudinal axis of the construction machine 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 installation and / or maintenance purposes. The auxiliary drive can act as a balancing weight for the electric drive.

[0018] In another, in particular alternative, embodiment of the present invention, the electric drive and the electric auxiliary drive of the construction machine are arranged spaced apart from each other in the longitudinal direction of the construction machine. In this way, the available installation space can be fully utilized particularly well.

[0019] In another embodiment of the present invention, an electric converter is provided on the electric drive and / or the electric auxiliary drive. The electric drive and / or the electric auxiliary drive are electrically connected to the electric energy storage device by means of the electric converter. The direct current voltage that can be tapped off at the electric energy storage device can be advantageously converted into the alternating current voltage required for the operation of the electric drive and / or the electric auxiliary drive by means of the converter.

[0020] In another design of the present invention, the viscous material pump unit has a water tank for supplying cooling water and / or flushing water to the delivery cylinder of the viscous material pump unit. Here, the water tank is arranged between the delivery cylinder of the viscous material pump unit and the electric accumulator along the longitudinal direction of the construction machine. Preferably, the water tank is arranged between the electric drive device and the electric accumulator along the longitudinal direction of the construction machine. The water tank can be arranged between the working cylinder and the delivery cylinder of the viscous material pump unit. The working cylinder can be fed by the hydraulic circuit of the construction machine. However, the working cylinder can also be constructed as an electric linear drive device of the electric drive device. An electric linear drive device can be provided instead of the working cylinder. The electric accumulator can be arranged on the working cylinder or the linear drive device.

[0021] In another embodiment of the invention, the water tank is closed by means of a removable cover of the viscous material pump unit. The cover can preferably be removed from the water tank against the direction of gravity. In this case, the construction machine has a free space for removing the cover. The free space is arranged above the water tank against the direction of gravity. Advantageously, a maintenance opening accessible from above can be provided by means of the water tank. Through this maintenance opening, wear parts of the viscous material pump unit can be replaced for maintenance of the viscous material pump unit. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Further advantages and features of the invention are apparent from the claims and the following description of preferred exemplary embodiments of the invention, which are illustrated with the aid of the drawings. In this context, identical reference numerals refer to identical or similar or functionally identical components.

[0023] It goes without saying that the features mentioned above and those yet to be explained below can be used not only in the respectively indicated combination but also in other combinations or alone, without departing from the scope of the present invention.

[0024] Figure 1 An embodiment of a construction machine according to the invention is shown in a schematic perspective view.

[0025] Figure 2 Another schematic perspective view shows the Figure 1 of construction machinery,

[0026] Figure 3 A schematic side view is shown according to Figure 1 and2 of construction machinery,

[0027] Figure 4 The schematic top view shows the Figures 1 to 3 of construction machinery,

[0028] Figure 5 A further embodiment of a construction machine according to the invention is shown in a schematic perspective view.

[0029] Figure 6 A schematic perspective view is shown according to Figure 5 of construction machinery,

[0030] Figure 7 A schematic side view is shown according to Figure 5 and 6 of construction machinery,

[0031] Figure 8 The schematic top view shows the Figures 5 to 7 of construction machinery,

[0032] Fig. 9 and 10 A schematic perspective view is shown according to Figures 1 to 4 or Figures 5 to 8 Support structure for an electric energy accumulator of a construction machine. DETAILED DESCRIPTION

[0033] The construction machine 1 is configured to convey a viscous material. The viscous material is, for example, a building material that is present in a viscous, highly viscous form. The viscous material can be a slurry-like mixture of different materials. The viscous material is in particular mortar, cement, mortar or concrete that is in a mixable and / or conveyable state.

[0034] The construction machine 1 has an electric accumulator 2 for storing electric energy. The construction machine 1 also includes an electric drive 3. The electric drive 3 is electrically connected to the electric accumulator 2 so as to supply electric energy thereto. With the aid of the electric drive 3, the electric energy from the electric accumulator 2 can be converted into kinetic energy. The construction machine 1 also has a viscous material pump unit 4. The viscous material pump unit 4 is configured to convey viscous material. The viscous material pump unit 4 can be drive-connected to the electric drive 3.

[0035] The viscous material pump unit 4 can have a delivery cylinder with a variable volume delivery chamber. In order to change the volume of the delivery chamber in particular in reverse, the delivery cylinder can have an adjustable delivery piston respectively. In addition, the viscous material pump unit 4 can include an S-shaped S-tube, which is connected to a pressure connection pipe that acts as a pump outlet at one end to conduct fluid. The S-tube can be arranged in a storage chamber that can be filled with viscous material from above and is used to store viscous material. Here, the S-tube can be rotatably supported on the pressure connection pipe at one end inside the storage chamber. The variable volume delivery chamber can be connected to the storage chamber. The S-tube can be deflected relative to the delivery chamber in the storage chamber so that it can be alternately connected to one of the delivery chambers to conduct fluid. In this way, through the opposite effect of the deflection of the S-tube and the volume change of the delivery chamber, the viscous material in the storage chamber is alternately sucked by the delivery chamber and pumped outwards through the delivery chamber through the S-tube via the pressure connection pipe. A stirrer can be arranged in the storage chamber of the viscous material pump unit 4.

[0036] Furthermore, the construction machine 1 has a frame 5. Here, the frame 5 carries not only the electric energy storage device 2 but also the electric drive device 3 and the viscous material pump unit 4. The frame 5 extends longitudinally along the construction machine longitudinal direction L. Here, the frame 5 extends from the first construction machine end 6 to the second construction machine end 7 along the construction machine longitudinal direction L. The construction machine transverse direction Q extends perpendicularly to the construction machine longitudinal direction L. Here, the frame 5 extends transversely between the first and second construction machine sides 8, 9 along the construction machine transverse direction Q. Both the construction machine longitudinal direction L and the construction machine transverse direction Q are oriented perpendicularly to the gravity direction G. Therefore, the construction machine longitudinal direction L, the construction machine transverse direction Q and the gravity direction G form three axes of a three-dimensional Cartesian coordinate system.

[0037] The frame 5 has at least three support points P1, P2, P3. The support points P1, P2, P3 are arranged spaced apart from each other transversely to the gravity direction G. "Support point" should refer to a geometric point existing on the construction machine 1, which is determined to be used to derive at least a part of the gravity acting on the construction machine 1. For example, the gravity can be directly derived in proportion at such a support point into the base U where the construction machine 1 is parked. However, it is also possible that a part of the gravity is not directly derived into the base U at such a support point, but is derived into another device or equipment that is parked on the base U. Each support point P1, P2, P3 can be arranged within the bearing surface of the support means of the construction machine 1. Such a support means can be a wheel 14, a support column 28, a support wheel 16, a traction device 15, a sledge leg or a chain-type or crawler chassis of the construction machine 1.

[0038] In the top view of the construction machine 1, the support surface A of the construction machine 1 extends between the support points P1, P2, P3. The support surface A is thus generated by the parallel projection of the support points P1, P2, P3 along the direction of gravity, for example onto a substrate U as a projection surface. Here, each support point P1, P2, P3 can determine an angle of the support surface A. However, it is also possible to arrange a plurality of support points P1, P2, P3 on the straight edges of the support surface A. In the embodiment shown in the figures, there are exactly three support points P1, P2, P3, so that a triangular support surface A is generated. However, it is also conceivable that there are more than three support points P1, P2, P3, so that a support surface A having a non-triangular shape, for example a quadrangular or other polygonal shape, can be generated.

[0039] The electric energy storage device 2, the electric drive device 3, the viscous material pump unit 4 and the frame 5 decisively determine the position of the total mass center of gravity SM of the construction machine 1. In this case, the electric energy storage device 2, the electric drive device 3, the viscous material pump unit 4 and the frame 5 are arranged relative to each other in such a way that the total mass center of gravity SM of the construction machine 1 is arranged within the support surface A in a top view of the construction machine 1. The support surface A has a geometric surface center of gravity SA. In a top view of the construction machine 1, the total mass center of gravity SM is arranged at a distance from the geometric surface center of gravity SA. This is particularly true in Figure 4 and 8 It can be seen in.

[0040] In accordance with Figures 1 to 4 In the embodiment of the present invention, the construction machine 1 has a hydraulic pump 10. The hydraulic pump 10 feeds a hydraulic circuit 11 of the construction machine 1. The hydraulic pump 10 is driven by means of an electric drive 3. The drive connection between the electric drive 3 and the viscous material pump unit 4 is realized by means of the hydraulic pump 10 and the hydraulic circuit 11. For this purpose, each delivery cylinder of the viscous material pump unit 4 can be mechanically connected to the hydraulic cylinder of the viscous material pump unit 4, for example, respectively, wherein the hydraulic cylinder is fed by the hydraulic circuit 11. As mentioned above, each delivery cylinder can have, for example, a delivery piston, by means of which the delivery volume belonging to the respective delivery cylinder can be changed. Each delivery piston can be connected to a piston rod, which is connected to the respective hydraulic cylinder assigned to it when it is away from the respective delivery piston. If hydraulic pressure is applied to one of the hydraulic pistons through the hydraulic circuit 11 in order to adjust the relevant hydraulic piston, the adjustment of the relevant hydraulic piston is also transmitted to the corresponding delivery piston through the piston rod, which causes a change in the volume of the corresponding delivery chamber. Therefore, the viscous material pump unit 4 is fed by the hydraulic circuit 11 to drive it. The hydraulic pump 11 is carried by the machine frame 5 , for example.

[0041] According to Figures 1 to 4 In different implementation modes, in the construction machine 1 according to Figures 5 to 8In another embodiment of the present invention, the hydraulic circuit 11 and the hydraulic pump 10 are not present. Instead, the electric drive device 3 is directly connected to the pump unit 4. To this end, each delivery cylinder of the viscous material pump unit 4 can be connected to the electric servo drive of the electric drive device 3. For example, each delivery cylinder can be provided with an electric linear drive, by means of which the volume of the delivery chamber of the delivery cylinder can be changed. To this end, the delivery piston of the delivery cylinder can be adjusted by means of the electric linear drive of the electric drive device 3. Therefore, it is possible to replace the electric linear drive according to Figures 1 to 4 Instead of the hydraulic cylinder of the embodiment of the present invention, an electric linear drive can be provided. Instead of a rotary hydraulic drive, for example for the rotational drive of the agitator and / or for the deflection of the S-tube, an electric rotary drive can be provided.

[0042] In the top view of the construction machine 1, see in particular Figure 4 and 8 , the total mass center of gravity SM is arranged substantially on the construction machine central longitudinal axis LA. The construction machine central longitudinal axis LA extends in the construction machine longitudinal direction L. In a top view, the electrical energy storage device 2 can be arranged, for example, completely in half of the extension of the construction machine 1 along the construction machine longitudinal direction L. This can be half of the extension of the construction machine 1 including the first construction machine end 6.

[0043] In the embodiment shown, the construction machine 1 is designed as a trailer 12. The machine frame 5 forms a chassis 13 of the trailer 12. As an alternative, the machine frame 5 can be fastened to a separately realized chassis 13 of the trailer 12, but this is not shown in the figures. The chassis 13 can be designed as a chassis frame. At least one axle RA is arranged on the chassis 13. The axle RA has at least two, in the present case exactly two, wheels 14 that are opposite one another in a transverse direction Q of the construction machine. For example, in the case of a tandem axle configuration, there can be a plurality of axles RA that are arranged at a distance from one another in a longitudinal direction L of the construction machine, each of which has at least two wheels 14.

[0044] The chassis 13 has a traction device 15 at the front side at the first construction machine end 6, which is used to couple the trailer 12 to the tractor. The tractor can be a trailer head, for example a motor vehicle. The tractor can be equipped with a coupling device that is complementary to the traction device 5. When the trailer 12 is coupled to the tractor, the traction device 15 can be placed flat on the coupling device of the tractor while transmitting the supporting load along the gravity direction G. The tractor itself is supported on the base U. Therefore, the trailer 12 is supported on the base U by means of the tractor on its traction device 15. The trailer 12 is additionally supported on the base U by means of wheels 14. One of the support points P1, P2, P3 is arranged on the traction device 15 and on each wheel 14 accordingly.

[0045] A central axis RM extending in the transverse direction Q of the construction machine is assigned to at least one wheel axle RA. If, as in the embodiment shown, there is only one single wheel axle RA, the central axis RM corresponds to the wheel axle RA. In the case of multiple wheel axles RA, the central axis RM extends centrally between the multiple wheel axles RA. The traction device 15 and the central axis RM are arranged at a distance D from each other in the longitudinal direction L of the construction machine. In a top view of the construction machine 1, the total mass center SM divides the distance D between the traction device 15 and the central axis RM into a first section D1 and a second section D2. Here, the first section D1 faces the traction device 15 and the second section D2 faces the central axis RM. Thus, the first section D1 extends from the traction device 15 to the total mass center SM, wherein the second section D2 extends from the central axis RM to the total mass center SM. Here, the ratio of the first section D1 to the second section D2 is 4 to 75, in particular 5.7 to 66. In the embodiment shown, the ratio of the first section D1 to the second section D2 is 7.7. In another preferred embodiment, the ratio of the first section D1 to the second section D2 is 65.7. The total mass of the construction machine 1 is, for example, 3500 kg.

[0046] The construction machine 1 has, for example, a support frame 17. The electric energy storage device 2 is arranged on the support frame 17. The support frame 17 is mounted on the machine frame 5. The electric energy storage device 2 is arranged at least partially above the machine frame 5, counter to the direction of gravity G. In the present case, the electric energy storage device 2 is arranged completely above the machine frame 5. However, it is also conceivable that, as an alternative, the electric energy storage device 2 is arranged at least partially overlapping the machine frame 5 in the direction of gravity G, so that a sunken arrangement of the electric energy storage device 2 relative to the machine frame 5 is produced.

[0047] The construction machine 1 has, for example, an intermediate frame 18. At least one electrical storage module 19 of the electrical energy storage device 2 is arranged on the intermediate frame 18. The intermediate frame 18 and the support frame 17 are connected to each other fixedly or flexibly for at least partial mechanical decoupling from each other. The electrical energy storage device 2 can be mounted on the support frame 17 by means of the intermediate frame 18. In the present case, the intermediate frame 18 and the support frame 17 are connected as in particular in Fig. 9 and 10 As can be seen in FIG, the intermediate frame 18 and the supporting frame 17 are connected to each other at three connections 20. However, it is self-evident that more than the three connections 20 shown can also be provided for connecting the intermediate frame 18 and the supporting frame 17. It is also possible that there are less than three connections 20, that is, one or two connections. Fig. 9 and 10 As shown in Figures 1 to 4In the two embodiments of 5 to 8, the support of the electric storage module 19 can be realized by means of the intermediate frame 18 and the support frame 19. At least three connections 20 can be realized by means of screw connections 21. As an alternative or in addition, an elastomer bearing 22 can be provided for each connection 20 in order to realize a flexible connection of the intermediate frame 18 and the support frame 17. This allows the intermediate frame 18 to be decoupled from the support frame 17 and parts of the frame 5, so that distortions or vibrations of the frame 5 that may occur during the operation of the construction machine 1 are not transmitted to the electric energy storage device 2 or at least are only transmitted to the electric energy storage device 2 to a reduced extent.

[0048] The electrical energy storage device 2 comprises at least two electrical storage modules 19. In the present case, the electrical energy storage device 2 comprises exactly two electrical storage modules 19, which are arranged adjacent to one another in the longitudinal direction L of the construction machine. Each of the electrical storage modules 19 can have at least one battery cell group. In the present case, each of the electrical storage modules 19 has three such battery cell groups, which are stacked one above the other in the direction of gravity G.

[0049] The electric drive 3 is arranged, for example, between the two machine sides 8 and 9 along the transverse direction Q of the construction machine. The electric drive 3 is currently arranged eccentrically between the two machine sides 8 and 9. As an alternative, the electric drive 3 can be arranged centrally between the construction machine sides 8 and 9. The construction machine 1 currently has an electric auxiliary drive 23. The electric auxiliary drive 23 is used to drive an auxiliary unit of the construction machine 1. The electric auxiliary drive 23 is electrically connected to the electric energy storage device 2. Here, the electric drive 3 and the electric auxiliary drive 23 are currently arranged at substantially the same distance relative to the first construction machine end 6 along the longitudinal direction L of the construction machine. The electric drive 3 and the electric auxiliary drive 23 are currently arranged eccentrically between the two construction machine sides 8 and 9 opposite to each other along the transverse direction Q of the construction machine. In particular, the electric drive 3 and the electric auxiliary drive 23 are arranged symmetrically relative to the central longitudinal axis L of the construction machine in a top view of the construction machine 1.

[0050] As an alternative, 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 staggered along the gravity direction G. There can be multiple electric auxiliary drives 23. The electric drive 3 and multiple electric auxiliary drives 23 can be arranged side by side, up and down, and / or one after another along the longitudinal direction L of the construction machine, along the transverse direction Q of the construction machine, and / or along the gravity direction G. At least one of the electric drive 3 and / or the electric auxiliary drive 23 can be arranged staggered with the electric energy accumulator 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 accumulator 2 with respect to the gravity direction G. The electric energy accumulator 2 can be arranged below the frame 5.

[0051] For example, an electric converter 24 of the construction machine 1 is arranged on the electric drive 3. As an alternative or in addition, an electric converter 24 is arranged on the electric auxiliary drive 23. Currently, the electric drive 3 and the electric auxiliary drive 23 are electrically connected to the electric energy storage device 2 by means of the electric converter 24. The electrical system of the construction machine 1 is, for example, directly arranged on the upper side of the electric energy storage device 2 that is located above against the direction of gravity G. The electrical system can have at least one electronic control device, which is used to control and / or regulate the electric drive 3 and / or the electric auxiliary drive 23. In addition, the electrical system can include an electric starter battery and / or an electronic charging device for the charging process of the electric energy storage device 3 and / or an electric converter and / or an electric distributor.

[0052] At present, the viscous material pump unit 4 has a water tank 25, which is used to supply cooling water and / or flushing water to the delivery cylinder of the viscous material pump unit 4. The cooling water and / or flushing water can be received in the inner space of the water tank 25. The piston rod of the delivery piston of the delivery cylinder and the lower side of the delivery chamber facing away from the delivery cylinder can be wetted with the cooling water and / or flushing water received in the water tank 25. The cooling water and / or flushing water are used to lubricate and / or clean the piston rod. The water tank 25 is arranged between the delivery cylinder of the viscous material pump unit 4 and the electric accumulator 2 along the longitudinal direction L of the construction machine. For example, the water tank 5 is arranged between the electric drive device 3 and the electric accumulator 2 along the longitudinal direction L of the construction machine. The water tank 5 can be arranged between the delivery cylinder of the viscous material pump unit 4 and the hydraulic or electric linear drive respectively assigned to one of the delivery cylinders.

[0053] The water tank 25 is closed, for example, by means of a removable cover 26 of the viscous 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 cover 26 from the water tank 25. The free space 27 is arranged above the water tank 25, counter to the direction of gravity G. The water tank 25 can form a maintenance opening for maintaining the viscous material pump unit 4. Through the maintenance opening, wearing parts of the viscous material pump unit 4 can be replaced regularly in particular. The water tank 25 has, for example, a discharge device, by means of which cooling water and / or flushing water can be discharged from the interior of the water tank 25 to the outside. For example, when the cover 26 is removed, the discharge device of the water tank 25 can be operated from above through the interior of the water tank 25.

[0054] The construction machine 1 has, for example, a temperature control system which serves to cool and / or heat the electrical energy storage device 2. The construction machine 1 can have a housing which is fastened to the support frame 5 and which shields the components of the construction machine 1 from the environment outside the construction machine 1.

Claims

1. A construction machine (1) for conveying viscous materials, comprising: - an electrical accumulator (2) for storing electrical energy, an electric drive (3) which is electrically connected to the electrical energy storage device (2) in order to supply it with electrical energy, a viscous material pump unit (4), which is designed to convey the viscous material, - a frame (5), - the frame carries the electric energy storage device (2), the electric drive device (3) and the viscous material pump unit (4), The frame extends from the first construction machine end (6) along the construction machine longitudinal direction (L) The second construction machine end (7) is longitudinally extended and along the transverse direction (Q) of the construction machine. extends transversely between the first and second construction machine sides (8, 9), wherein the construction machine longitudinal direction (L) and the construction machine transverse direction (Q) are oriented perpendicularly to each other and perpendicularly to the direction of gravity (G), and - the frame has at least three support points (P1, P2, P3) spaced apart from one another transversely to the direction of gravity (G), at which the construction machine (1) is supported relative to the base (U), wherein in a top view of the construction machine (1), the support surface (A) of the construction machine (1) extends between the support points (P1, P2, P3), - wherein the electric energy storage device (2), the electric drive device (3), the viscous material pump unit (4) and the frame (5) are arranged relative to each other so that the total mass center of gravity (SM) of the construction machine (1) is arranged within the support surface (A) in a top view of the construction machine (1) and is separated from the geometric surface center of gravity (SA) of the support surface (A) along the longitudinal direction (L) of the construction machine.

2. The construction machine (1) according to claim 1, characterized in that: - The construction machine (1) further comprises: a hydraulic pump (10) which is driven by means of the electric drive (3) and which feeds a hydraulic circuit (11), - wherein the viscous material pump unit (4) is fed by the hydraulic circuit (11) in order to drive the viscous material pump unit.

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

4. The construction machine (1) according to any one of the preceding claims, characterized in that - the construction machine (1) is designed as a trailer (12), - the frame (5) forms the chassis (13) of the trailer (12) or is fixed to the chassis (13) of the trailer (12), and - at least one axle (RA) is arranged on the chassis (13), the axle having at least two wheels (14) lying opposite one another in a transverse direction (Q) of the construction machine, and the chassis (13) has a traction device (15) at the front side at the first construction machine end (6) for coupling to a tractor, wherein one of the support points (P1, P2, P3) is arranged on the traction device (15) and on each of the wheels (14).

5. The construction machine (1) according to claim 4, characterized in that the traction device (15) and the center axis (RM) associated with the at least one wheel axle (RA) are arranged at a distance (D) from one another in the longitudinal direction (L) of the construction machine, - the total mass center (SM) divides the distance (D) between the traction device (15) and the center axis (RM) in a top view of the construction machine (1) into a first section (D1) facing the traction device (15) and a second section (D2) facing the center axis (RM), and The ratio of the first section (D1) to the second section (D2) is 4 to 75, in particular 5.6 to 66.

6. Construction machine (1) according to any one of the preceding claims, characterized in that the construction machine (1) has a support frame (17), wherein the electrical energy storage device (2) is arranged on the support frame (17) and the support frame (17) is mounted on the machine frame (5), In particular, the electrical energy storage device (2) is arranged at least partially, in particular completely, above the machine frame (5) counter to the direction of gravity (G).

7. The construction machine (1) according to claim 6, characterized in that the construction machine (1) having an intermediate frame (18), wherein at least one electrical storage module (19) of the electrical energy storage device (2) is arranged on the intermediate frame (18), in particular so that the electrical energy storage device (2) is mounted on the support frame (17) by means of the intermediate frame (18), The intermediate frame (18) and the support frame (17) are connected to one another in a fixed manner or in a flexible manner, in particular at at least three connections (20), for at least partial mechanical decoupling from one another.

8. Construction machine (1) according to any one of the preceding claims, characterized in that The electric drive (3) is arranged centrally or eccentrically between two construction machine sides (8, 9) in a transverse direction (Q) of the construction machine.

9. Construction machine (1) according to any one of the preceding claims, characterized in that An electric auxiliary drive (23) of the construction machine (1) for driving an auxiliary unit of the construction machine (1) is electrically connected to the electric energy storage device (2).

10. The construction machine (1) according to claim 9, characterized in that The electric drive (3) and the electric auxiliary drive (23) are arranged eccentrically between two construction machine sides (8, 9) along the longitudinal direction (L) of the construction machine at substantially the same distance relative to the first construction machine end (6) and along the transverse direction (Q) of the construction machine, in particular symmetrically about the central longitudinal axis (LA) of the construction machine in a top view of the construction machine (1).

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

12. Construction machine (1) according to any one of the preceding claims, characterized in that An electric converter (24) is arranged on the electric drive (3) and / or on the electric auxiliary drive (23), respectively, by means of which the electric drive (3) and / or the electric auxiliary drive (23) are electrically connected to the electric energy storage device (2).

13. The construction machine (1) according to any one of the preceding claims, characterized in that The viscous material pump unit (4) has a water tank (25) for supplying cooling water and / or flushing water to the delivery cylinder of the viscous material pump unit (4), and The water tank (25) is arranged along the longitudinal direction (L) of the construction machine between the delivery cylinder of the viscous material pump unit (4) and the electric energy storage device (2), in particular between the electric drive device (3) and the electric energy storage device (2).

14. Construction machine (1) according to any one of the preceding claims, characterized in that the water tank (25) is closed by means of a removable cover (26) of the viscous material pump unit (4), The construction machine (1) has a free space (27) for removing the cover (26), the free space being arranged above the water tank (25) counter to the direction of gravity (G).

Images