A device for damping pressure fluctuations in a delivery line of a thick-matter piston pump. The device includes a container communicating with the delivery line and at least partially filled with a compressible fluid. The container is adapted for a pulsing intake and output of transported material during the pumping operation. A controller adjusts the amount of the compressible fluid in the container as a function of operating parameters. The controller includes a pressure sensor for determining delivery pressure and an electronic computing unit. The computing unit determines and stores a pressure ratio V between delivery pressure values occurring during a working cycle of the thick-matter pump and during a switch-over phase between each working cycle of the pistons of the thick-matter pump. Alternately or additionally, the electronic computing unit may determine and store a mean value M of the delivery pressure over a time interval during the switch-over phase.
F04B 11/00 - Equalisation of pulses, e.g. by use of air vesselsCounteracting cavitation
F04B 15/02 - Pumps adapted to handle specific fluids, e.g. by selection of specific materials for pumps or pump parts the fluids being viscous or non-homogeneous
The invention relates to a mobile working machine, particularly an automatic concrete pump, having a chassis (10) designed as a tractor-trailer. The tractor-trailer comprises a tractor (12) and a multi-axle semi-trailer (14) supporting the working machine and connected to said tractor by means of a fifth wheel (16). A support construction (38) that can be supported on a surface (40) is located in the area of the semi-trailer (14). The support construction (38) comprises two front stabilizers (42’, 42’) and two rearward stabilizers (44), each pivotable between a transport position and at least one support position relative to the semi-trailer. Means for raising and securing the tractor (12) are further disposed on the semi-trailer (14), so that the tractor (12) forms a ballast weight for stabilizing the semi-trailer supported by the support construction (38) on the base (40) in the support position. According to the invention, the bearing points (48’, 48) of the front stabilizers (42’, 42’) comprise a hollow space (80) through the center of the axis, and the means for raising and securing the tractor disposed on the semi-trailer (14) each comprise a lift member (82) extending through the central hollow area (80) of the bearing point (48, 48) from top to bottom and releasably attachable to the tractor (12).
B62D 61/12 - Motor vehicles or trailers, characterised by the arrangement or number of wheels, not otherwise provided for, e.g. four wheels in diamond pattern with variable number of ground-engaging wheels, e.g. with some wheels arranged higher than others, or with retractable wheels
B62D 21/18 - Understructures, i.e. chassis frame on which a vehicle body may be mounted characterised by the vehicle type and not provided for in groups
B66C 23/42 - Cranes comprising essentially a beam, boom or triangular structure acting as a cantilever and mounted for translatory or swinging movements in vertical or horizontal planes or a combination of such movements, e.g. jib cranes, derricks or tower cranes specially adapted for use in particular locations or for particular purposes mounted on road or rail vehiclesManually-movable jib cranes for use in workshopsFloating cranes with jibs of adjustable configuration, e.g. foldable
E04G 21/04 - Devices for both conveying and distributing
The invention relates to a wheeled working machine, particularly a truck-mounted concrete pump, comprising a chassis (10) that is designed as a semi-trailer. The semi-trailer encompasses a tractor (12) and a multi-axle trailer (14) which is connected to the tractor (12) by means of a fifth wheel (16) and carries the working machine. A support structure (38) located in the area of the trailer (14) can be supported on a ground (40) while the semi-trailer is lifted. The support structure (38) comprises two front support booms (42', 42") and two rear support booms (44) which can all be swiveled relative to the trailer (14) between a transported position and at least one supporting position. Furthermore, means for lifting and blocking the tractor (12) are arranged on the trailer (14) such that the tractor (12) forms a ballast in the supporting position in order to stabilize the trailer (14) that is supported on the ground (40) with the help of the support structure (38). According to the invention, the actuating mechanism of each front support boom (42', 42") has a cylinder-piston unit (54', 54") which is designed as a hydraulic cylinder and extends across a front part (52) of the trailer (14). One end of said cylinder-piston unit (54', 54") is directly hinged to a bearing eye (56', 56") that is fixedly mounted on the trailer (14) while the other end thereof is indirectly hinged to the associated support boom (42', 42") by means of a deflection gear (58', 58").
B66C 23/42 - Cranes comprising essentially a beam, boom or triangular structure acting as a cantilever and mounted for translatory or swinging movements in vertical or horizontal planes or a combination of such movements, e.g. jib cranes, derricks or tower cranes specially adapted for use in particular locations or for particular purposes mounted on road or rail vehiclesManually-movable jib cranes for use in workshopsFloating cranes with jibs of adjustable configuration, e.g. foldable
E04G 21/00 - Preparing, conveying, or working-up building materials or building elements in situOther devices or measures for constructional work
B62D 21/18 - Understructures, i.e. chassis frame on which a vehicle body may be mounted characterised by the vehicle type and not provided for in groups
B62D 61/12 - Motor vehicles or trailers, characterised by the arrangement or number of wheels, not otherwise provided for, e.g. four wheels in diamond pattern with variable number of ground-engaging wheels, e.g. with some wheels arranged higher than others, or with retractable wheels
B62D 53/04 - Tractor-trailer combinationsRoad trains comprising a vehicle carrying an essential part of the other vehicle's load by having supporting means for the front or rear part of the other vehicle
F16B 13/00 - Dowels or other devices fastened in walls or the like by inserting them in holes made therein for that purpose
The invention relates to a drivable working machine with a chassis (12) comprising a chassis part (24) and at least two front and two rear wheels (14', 14', 16', 16') associated in pairs with a wheel axle (18',18';20',20'). The wheels can move along a limited spring deflection relative to the chassis part (24) against the force of a wheel spring (22). Further, at least two front and two rear support members (48) are provided, located in pairs on opposite sides of the chassis part (24) or of a structural frame (26) that is rigidly connected thereto, said support members supporting the chassis (12) on a base (10) in the support position of said support members, the spring deflection of the associated wheel springs (22) being LJ bypassed in the process. According to the invention, at least two of the support members (48) associated with one of the wheel pairs (16') comprise a control member (cylinder 50, piston rod 52) that can move between a support position and a driving position, said control member when in the support position holding the wheel spring (42,44') while bypassing the spring deflection relative to the respective wheel axle (20'), and when in the driving position being raised, thereby releasing the spring deflection of the wheel spring (22,44').
The invention relates to a mounting frame (22) for mobile concrete pumps. The mounting frame (22) comprises two longitudinal side members (50) which are arranged at a lateral distance from one another to leave free a clearance (52) and which are intended to receive functional units forming a supporting structure (40), a boom pedestal (44) with a distributor boom (36) and a core pump (24) with a material-feeding container (32). In order to make possible an efficient design for concrete pumps of different sizes, it is proposed according to the invention that the mounting frame (22) has a front frame section (60) and a rear frame section (62', 62”, 62r) which are detachably interconnected at a separating point (64) in the region of the longitudinal side members (50). It is thus possible for a single front frame section (60) to be able to be selectively combined in a modular manner with a rear frame section selected from among a group consisting of a number of rear frame sections of different overall length.
B60P 3/16 - Vehicles adapted to transport, to carry or to comprise special loads or objects for carrying mixed concrete, e.g. having rotatable drums
E04G 21/04 - Devices for both conveying and distributing
B66C 23/42 - Cranes comprising essentially a beam, boom or triangular structure acting as a cantilever and mounted for translatory or swinging movements in vertical or horizontal planes or a combination of such movements, e.g. jib cranes, derricks or tower cranes specially adapted for use in particular locations or for particular purposes mounted on road or rail vehiclesManually-movable jib cranes for use in workshopsFloating cranes with jibs of adjustable configuration, e.g. foldable
The invention relates to a pipe junction for two-cylinder viscous matter pumps, comprising a spectacle-type plate (30) that faces the cylinders and has two openings (14) which communicate with conveying cylinders (10, 12), and a swivel pipe (32) that can be swiveled back and forth between the two openings (14) in front of the spectacle-type plate (30). At the end facing the spectacle-type plate, the swivel pipe (32) supports a cutting ring (34) which can be axially moved to a limited extent and can be pressed against the spectacle-type plate (30). The cutting ring (34) is fitted with a supporting ring (46) and a protective structure (48) which is made of wear-resistant material, is closed in the circumferential direction, and is integrally joined to the supporting ring (46) at least on the surface facing the spectacle-type plate. In order to prevent excessive wear on radially projecting parts of the swivel pipe, the supporting ring (46) of the cutting ring is provided with a wear-resistant shielding element (82) which radially projects from the protective structure and forms a deflection area (84) for the viscous matter that is discharged from the opening (14) during a switching process, said deflection area (84) shielding the end (80) of the swivel pipe (32) which faces the cutting ring.
F04B 15/02 - Pumps adapted to handle specific fluids, e.g. by selection of specific materials for pumps or pump parts the fluids being viscous or non-homogeneous
F04B 7/00 - Piston machines or pumps characterised by having positively-driven valving
The invention relates to a wearing ring for dual-cylinder thick matter pumps. The wearing ring (44) has a support structure (46) provided with at least one circular opening (50) and a plurality of ring segments which are made of wear-resistant material, bonded to the support structure (46), and connected to each other by means of butt joints (54) around the circumference of the opening (50) with formation of an annular, closed and level sealing surface (52). According to the invention, the ring segments (48) have edge parts (56,58) on the borders thereof (54) which delimit the butt joints (54), are complementary to each other in pairs, and interlock with each other in a positive fit around the circumference. An additional feature of the invention is that the ring segments (48) have an L-shaped cross section. The wearing rings (44) according to the invention can be used equally in the spectacle plate (32) and as a cutting ring (32) of a pipe junction (18) for dual-cylinder thick matter pumps.
F04B 7/00 - Piston machines or pumps characterised by having positively-driven valving
F04B 15/02 - Pumps adapted to handle specific fluids, e.g. by selection of specific materials for pumps or pump parts the fluids being viscous or non-homogeneous
10.
DISTRIBUTING BOOM PARTICULARLY FOR A CONCRETE PUMP
The invention relates to a distributing boom, which is intended for a stationary or mobile concrete pump. The distributing boom (10) comprises at least three boom arms (23 to 27) that can be pivoted in relation to each other about axes (28 to 32) that are parallel to each other, or in relation to a boom stand (21), using a drive assembly (34), and it comprises a delivery line (16) that on the inlet side is charged with liquid concrete and guided over the boom arms in sections, said line ending in a discharge element (43, 45) disposed on the last boom arm (27) on the outlet side. According to the invention, the last boom arm (27) is composed of two arm parts (27', 27'') that are rigidly coupled to one another at a parting point (40), wherein the drive assembly (34), which is linked to the second to the last boom arm (26), engages the first arm part (27') that is directly linked to the second to the last boom arm (26), and wherein at least two different second arm parts (27' '), which can be exchanged among each other in a modular manner, are provided, said arm parts being equipped with different discharge elements (43, 45) that can be connected to the delivery line (16).
The invention relates to a large manipulator, especially a truck-mounted concrete pump having a boom base (16) that can be arranged on a frame, especially on a chassis (10) so as to be pivoted about a substantially vertical axis of rotation (18). The large manipulator also comprises a pendular element, preferably configured as a terminal hose (50), that hangs down as an articulated boom from the boom tip of the articulated boom, and a control device for controlling the drive units of the axes of articulation and rotation of the articulated boom, the remote control having at least one inclination sensor (52, 54) which is housed in a housing (30) that is detachably fastened on the pendular element (50). The invention is characterized in that two inclination sensors (52, 54) are housed in the housing (30) and are bent at an angle of 90° with respect to each other and with respect to an axis that is parallel to the pendular element axis (32). In order to allow an exact orientation of the housing (30), the latter has a mark (47) indicating the orientation of at least one of the inclination sensors inside the housing (30).
E04G 21/04 - Devices for both conveying and distributing
B66C 23/00 - Cranes comprising essentially a beam, boom or triangular structure acting as a cantilever and mounted for translatory or swinging movements in vertical or horizontal planes or a combination of such movements, e.g. jib cranes, derricks or tower cranes
The invention relates to a method for setting up a mobile machine (1), particularly an automatic concrete pump, a mobile crane or a movable elevating work platform. With such a method, the subsurface (28) of a site is analyzed for the properties and/or load-bearing capacity thereof before the machine (10) is positioned there and/or oriented and supported by means of flarable supporting legs (20, 24) in set-up positions (VR, VL, HR, HL) suitable according to the determined subsurface properties and load-bearing capacity. In order to determine an optimized set-up position for the supporting legs (20, 24), geodata (38) of a geographic environment that includes the site is read via a computer in a data memory (44) using a layer of subsurface data (40) that defines the subsurface properties and load-bearing capacity. In addition, the geographic position of the machine (1) and the orientation thereof at the site are determined and linked in the form of a data set that defines at least the geographic set-up positions (VR, VL, HR, HL) of the flared supporting legs (20, 24) to the imported geodata and subsurface data (38, 40). Then, the machine (1) is navigated with the supporting legs (20, 24) into a set-up position that is suited according to the imported geodata and subsurface data.
A mobile dehydration system that is operable to remove water from a supply of fluid, such as hydraulic fluid. The mobile dehydration system includes a fluid pump (20) that draws the supply of hydraulic fluid from a storage tank. The flow of hydraulic fluid passes through a fluid heater (25) that elevates the temperature of the hydraulic fluid. The fluid heater includes at least one flow restricting orifice (26,28) that reduces the pressure of the flow of hydraulic fluid, thereby elevating the temperature of the hydraulic fluid. The outlet of the fluid heater is connected to a dehydrator (36) that removes water from the flow of hydraulic fluid. A fluid feedback line (42) is connected between the outlet of the fluid heater and the inlet of the fluid pump to return a portion of the hydraulic fluid flow when the flow rate through the dehydrator is less than the flow rate from the fluid pump.
A mobile dehydration system that is operable to remove water from a supply of fluid, such as hydraulic fluid. The mobile dehydration system includes a fluid pump that draws the supply of hydraulic fluid from a storage tank. The flow of hydraulic fluid passes through a fluid heater that elevates the temperature of the hydraulic fluid. The fluid heater includes at least one flow restricting orifice that reduces the pressure of the flow of hydraulic fluid, thereby elevating the temperature of the hydraulic fluid. The outlet of the fluid heater is connected to a dehydrator that removes water from the flow of hydraulic fluid. A fluid feedback line is connected between the outlet of the fluid heater and the inlet of the fluid pump to return a portion of the hydraulic fluid flow when the flow rate through the dehydrator is less than the flow rate from the fluid pump.
The invention relates to a mobile machine, in particular a transportable thick-matter or concrete pump. The mobile machine comprises a carrying frame (10) for machine assemblies and a covering hood (12) which reaches over the carrying frame at least partially and is fixed on it. For its part, the covering hood comprises a frame skeleton (14) having a rectangular roof frame (16) and two rectangular side frames (20) which are connected at their upper edge to the roof frame (16), wherein the side frames are fastened releasably to the carrying frame (10) by way of their lower edge (22). A trough-shaped roof cover (26), the opening of which points upwards, is inserted into the roof frame, while the side frames (20) carry in each case at least one side casing element (30', 30') which is formed as a self-supporting plastic shaped part and of which at least one is configured as a door flap which is mounted in an articulated manner on the upper edge (18) of the associated side frame (20). Furthermore, the frame skeleton openings (32) which are formed by the roof frame (16) and the two side frames (20) at the end-side hood ends are engaged over by a removable end cap (34', 34') which is formed as a self-supporting plastic shaped part.
F04B 15/02 - Pumps adapted to handle specific fluids, e.g. by selection of specific materials for pumps or pump parts the fluids being viscous or non-homogeneous
F04B 53/00 - Component parts, details or accessories not provided for in, or of interest apart from, groups or
F16M 3/00 - Portable or wheeled frames or beds, e.g. for emergency power-supply aggregates, compressor sets
16.
CIRCULAR DISTRIBUTOR FOR THICK MATERIALS, IN PARTICULAR FOR LIQUID CONCRETE
The invention relates to a circular distributor for thick materials, in particular for liquid concrete. The circular distributor comprises a support frame (10) mounted on a base (16), a frame-secured conveying pipe (24) which can be charged at an inlet end (26) with thick materials under pressure, a first pipe bend (30) coupled to the outlet end of the frame-secured conveying pipe (24), a second pipe bend (34) which, via a first articulated coupling (32), can be pivoted with respect to the first pipe bend (30) about a vertical axis (36) of the support frame (10), and a distributor pipe (44) connected to the second pipe bend (34), the outlet end of which distributor pipe has an outlet opening (48) for the thick materials. According to the invention, a third pipe bend (40) is arranged between the second pipe bend (34) and the distributor pipe (44), this third pipe bend being able to pivot on the second pipe bend (34) via a second articulated coupling (38) having a horizontal axis (46) which is perpendicular to the vertical axis (36) and being coupled to the distributor pipe (44) via a connector coupling (42).
The invention relates to an arrangement for conveying concrete for the construction of multi-storey concrete buildings. The arrangement comprises a concrete-distributing mast which is height-adjustable on completed parts of the building, for example on storey floors (48', 48'', 48'''), said mast comprising a supporting column (10), a rotary unit (12) and an arm assembly (14) preferably designed as an articulated boom, and said mast being equipped with a conveying line (16) which is guided over the height of the supporting column (10) to the arm assembly (14) and which is supplied with liquid concrete. To facilitate the handling of the concrete-distributing mast during transportation and during the climbing operation, the invention proposes that the supporting column (10) has at least one channel-shaped surface depression (36, 38) extending in the longitudinal direction of the column, in which depression can be sunk that part of the conveying line (16) which extends over the supporting column (10), and/or an elongate part of the climbing apparatus (52).
The invention relates to an automatic concrete pump with an articulated mast (14) serving as a support for a supply line and with two forward and two backward support extensions (16',16'',18',18'') which can be supported on a base platform (32) and which can be lowered from a driving position into a support position, each with a telescopic support leg (30). According to the invention, each support extension comprises one inner support position near to the chassis, and at least one outer support position away from the chassis, which can be freely selected by forming defined support configurations (V,SL,SR,YL,YR,N) for the four support extensions. Further, a control device for the movement of the mast arm is provided which comprises a software program corresponding to the selected support configuration, which program limits the pivot angle of the first bending arm (1) about its bending axis (A) and an associated range of angular rotation of the rotatable head (24) about the vertical axis (22), according to the specification of the selected support configuration.
The invention relates to a mudguard (38) for motor vehicles, in particular for mobile concrete pumps. The mudguard (38) has a dirt trap (42) which partially extends over the running surfaces of wheels of the mobile working machine, and fastening means (40) for fixing the dirt trap to a point on the working machine which is fixed to the chassis. According to the invention, the mudguard (38) is in the form of a plastic self-supporting hollow chamber component which has a dirt trap part (42) and a flange part (44) which is integrally connected to said dirt trap part, wherein the flange part (44) has a plurality of transverse apertures (46), which are arranged in a grid-like fashion in relation to one another, for holding the fixing means (40).
The invention relates to a transport tube for thick materials, in particular for concrete. The transport tube comprises substantially a pressure tube (16) from wear-resistant tube material, which is preferably hardened on the inside, and at least one coupling ring (18', 18'') which is fixed with a material-to-material fit at the end to the outer face of the pressure tube (16). According to the invention, the coupling ring (18', 18'') has a first ring part (34) having an inner face of excess dimensions with respect to the outer face of the pressure tube (16), and a second ring part (36) which adjoins the first ring part (34) axially and has an inner cone which deviates in its axial profile from the outer face of the pressure tube (16) as far as an undersize. The coupling ring (18', 18'') is pressed onto the outer face of the pressure tube (16) with the inner cone (38) of its second ring part (36). Furthermore, it delimits an annular gap space (40) with its first ring part (34) together with the pressure tube (16), which annular gap space (40) is filled at least partially with an adhesive to produce the material-to-material connection.
B65G 53/32 - Conveying concrete, e.g. for distributing same at building sites
F16L 23/024 - Flanged joints the flanges being connected by members tensioned axially characterised by how the flanges are joined to, or form an extension of, the pipes
F16L 23/032 - Flanged joints the flanges being connected by members tensioned axially characterised by the shape or composition of the flanges
F16L 57/00 - Protection of pipes or objects of similar shape against external or internal damage or wear
F16L 57/06 - Protection of pipes or objects of similar shape against external or internal damage or wear against wear
The invention relates to a piston pump for thick matter, in particular for high-solids sewage sludge, coal sludge and concrete. The piston pump has at least one delivery cylinder (16) which contains a motor-driven or hydraulically driven delivery piston (20) and which has an orifice (12) which communicates alternately with the interior of a material feed container (10) and with a pressure delivery line (30) in a slide-controlled manner in accordance with the movement of the delivery piston (20). In order to significantly increase the degree of filling of the at least one delivery cylinder (16), an annular nozzle (32) opening into the delivery cylinder (16) in the region of the orifice (12) is provided, and this annular nozzle (32) is connected to an external pressure line (34) to which a lubricant can be admitted.
F04B 15/02 - Pumps adapted to handle specific fluids, e.g. by selection of specific materials for pumps or pump parts the fluids being viscous or non-homogeneous
The invention relates to a mobile machine, in particular a truck-mounted concrete pump. The machine comprises a chassis (10) which has at least four wheels (11) belonging in pairs to a wheel axle. Furthermore, at least two supporting legs (20) arranged in pairs laterally on the chassis are provided, said supporting legs (20) having a telescopic segment, linked to the chassis (10) and designed as a push-out tube (28), and a foot part (24) which can be extended telescopically downwards preferably by hydraulic means and can be supported on the ground. In order to ensure simple manipulation of the supporting mechanism, it is proposed according to the invention that the push-out tube (28) of the supporting legs (20) be designed like a two-armed lever while forming a, with respect to the swivel axis (34), bottom lever arm (40) containing the foot part (24) and a top lever arm (42) preferably spring-assisted in the swing-out direction.
B66C 23/78 - Supports, e.g. outriggers, for mobile cranes
B60S 9/04 - Ground-engaging vehicle fittings for supporting, lifting, or manoeuvring the vehicle, wholly or in part, e.g. built-in jacks for only lifting or supporting mechanically
23.
WORKING MAST, IN PARTICULAR FOR LARGE MANIPULATORS AND MOVABLE CONCRETE PUMPS
The invention relates to a working mast, in particular for large manipulators and concrete pumps comprising a rotatable head (21) mounted on a frame (11) in such a way that it is pivotable about a vertical axis (13), a first mast arm (1) pivotable in a limited manner about a horizontal articulation axis (A) in front of the rotatable head (21) by means of a drive unit (22) and at least one other mast arm (2, 3, 4) which, is longitudinally displaceable along a thrust axis and/or rotatable about a horizontal articulation axis (B, C, D) with respect to the adjacent mast arm with the aid of a drive unit (23, 24, 25). In addition, a control, preferably a remotely controlled, device enables the mast to be displaced by means of actuators associated with different drive units. The actuators are substantially embodied in the form of adjusting valves which make it possible to control the drive units (23, 24, 25) embodied in the form of hydraulic cylinders. A path and/or angle measuring sensor (54) is placed on at least one mast arm, thrust and/or articulation axis, the vertical axis (13) and/or drive units (23, 24, 25). The control device comprises a safety routine responsive to output data items received from the sensors. Pressure and force sensors (42, 44) are arranged on the bottom and rod sides of at least one drive unit embodied in the form of a hydraulic cylinder (22), whereas the safety routine comprises an evaluating part (56) responsive to the output data of the pressure and force sensors. In order to improve the use of kinematics during the articulated mast movement, the safety routine is provided with a data memory for recording a data field which is analytically predefined or presented in the form of tables and contains the pressure or force threshold values corresponding to at least one path and/or angle measured value assigned to the mast arm. The evaluating part (56) comprises a comparator supplied with output data of the pressure or force sensors (42, 44) or the associated path or angle sensors (54) or else with quantities derived therefrom in order to compare them with the associated threshold values obtained from the data field and to generate a signal when said threshold value data items are exceeded or fallen bellow.
12 - Land, air and water vehicles; parts of land vehicles
Goods & Services
Conveyor delivery system for concrete, stone and other building materials. Conveyor delivery system, adapted for mounting on motor vehicles, for concrete, stone and other building materials.
