EP3807534B1 - Hydraulikantriebssystem für eine baustoffpumpe und baustoffpumpe - Google Patents

Hydraulikantriebssystem für eine baustoffpumpe und baustoffpumpe Download PDF

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Publication number
EP3807534B1
EP3807534B1 EP19731183.0A EP19731183A EP3807534B1 EP 3807534 B1 EP3807534 B1 EP 3807534B1 EP 19731183 A EP19731183 A EP 19731183A EP 3807534 B1 EP3807534 B1 EP 3807534B1
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EP
European Patent Office
Prior art keywords
pressure
drive
hydraulic
designed
hydraulic fluid
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Active
Application number
EP19731183.0A
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German (de)
English (en)
French (fr)
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EP3807534A1 (de
Inventor
Jan-Martin VEIT
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Putzmeister Engineering GmbH
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Putzmeister Engineering GmbH
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Publication of EP3807534A1 publication Critical patent/EP3807534A1/de
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Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04B—POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
    • F04B9/00—Piston machines or pumps characterised by the driving or driven means to or from their working members
    • F04B9/08—Piston machines or pumps characterised by the driving or driven means to or from their working members the means being fluid
    • F04B9/10—Piston machines or pumps characterised by the driving or driven means to or from their working members the means being fluid the fluid being liquid
    • F04B9/109—Piston machines or pumps characterised by the driving or driven means to or from their working members the means being fluid the fluid being liquid having plural pumping chambers
    • F04B9/117—Piston machines or pumps characterised by the driving or driven means to or from their working members the means being fluid the fluid being liquid having plural pumping chambers the pumping members not being mechanically connected to each other
    • F04B9/1176—Piston machines or pumps characterised by the driving or driven means to or from their working members the means being fluid the fluid being liquid having plural pumping chambers the pumping members not being mechanically connected to each other the movement of each piston in one direction being obtained by a single-acting piston liquid motor
    • F04B9/1178—Piston machines or pumps characterised by the driving or driven means to or from their working members the means being fluid the fluid being liquid having plural pumping chambers the pumping members not being mechanically connected to each other the movement of each piston in one direction being obtained by a single-acting piston liquid motor the movement in the other direction being obtained by a hydraulic connection between the liquid motor cylinders
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F15—FLUID-PRESSURE ACTUATORS; HYDRAULICS OR PNEUMATICS IN GENERAL
    • F15B—SYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL; FLUID-PRESSURE ACTUATORS, e.g. SERVOMOTORS; DETAILS OF FLUID-PRESSURE SYSTEMS, NOT OTHERWISE PROVIDED FOR
    • F15B15/00—Fluid-actuated devices for displacing a member from one position to another; Gearing associated therewith
    • F15B15/20—Other details, e.g. assembly with regulating devices
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04B—POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
    • F04B15/00—Pumps adapted to handle specific fluids, e.g. by selection of specific materials for pumps or pump parts
    • F04B15/02—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
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04B—POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
    • F04B15/00—Pumps adapted to handle specific fluids, e.g. by selection of specific materials for pumps or pump parts
    • F04B15/02—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
    • F04B15/023—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 supply of fluid to the pump by gravity through a hopper, e.g. without intake valve
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04B—POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
    • F04B49/00—Control, e.g. of pump delivery, or pump pressure of, or safety measures for, machines, pumps, or pumping installations, not otherwise provided for, or of interest apart from, groups F04B1/00 - F04B47/00
    • F04B49/007—Installations or systems with two or more pumps or pump cylinders, wherein the flow-path through the stages can be changed, e.g. from series to parallel
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04B—POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
    • F04B49/00—Control, e.g. of pump delivery, or pump pressure of, or safety measures for, machines, pumps, or pumping installations, not otherwise provided for, or of interest apart from, groups F04B1/00 - F04B47/00
    • F04B49/02—Stopping, starting, unloading or idling control
    • F04B49/03—Stopping, starting, unloading or idling control by means of valves
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04B—POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
    • F04B49/00—Control, e.g. of pump delivery, or pump pressure of, or safety measures for, machines, pumps, or pumping installations, not otherwise provided for, or of interest apart from, groups F04B1/00 - F04B47/00
    • F04B49/06—Control using electricity
    • E—FIXED CONSTRUCTIONS
    • E04—BUILDING
    • E04G—SCAFFOLDING; FORMS; SHUTTERING; BUILDING IMPLEMENTS OR AIDS, OR THEIR USE; HANDLING BUILDING MATERIALS ON THE SITE; REPAIRING, BREAKING-UP OR OTHER WORK ON EXISTING BUILDINGS
    • E04G21/00—Preparing, conveying, or working-up building materials or building elements in situ; Other devices or measures for constructional work
    • E04G21/02—Conveying or working-up concrete or similar masses able to be heaped or cast
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F05—INDEXING SCHEMES RELATING TO ENGINES OR PUMPS IN VARIOUS SUBCLASSES OF CLASSES F01-F04
    • F05B—INDEXING SCHEME RELATING TO WIND, SPRING, WEIGHT, INERTIA OR LIKE MOTORS, TO MACHINES OR ENGINES FOR LIQUIDS COVERED BY SUBCLASSES F03B, F03D AND F03G
    • F05B2210/00—Working fluid
    • F05B2210/10—Kind or type
    • F05B2210/11—Kind or type liquid, i.e. incompressible

Definitions

  • the invention relates to a hydraulic drive system for a building material pump and a building material pump having such a hydraulic drive system.
  • the DE 101 34 789 A1 discloses a travel drive with an internal combustion engine and with working hydraulics, which has a pump device actuated by the internal combustion engine, and with an electronic control unit that controls the speed of the internal combustion engine and the flow rate of the pump device.
  • the working hydraulics have a hydraulic load branch that can be switched on by means of a control element, and the control element can be activated by the electronic control unit as soon as a detected actual speed of the internal combustion engine exceeds a tolerance range of a set target speed. Use for tracked vehicles on snow slopes.
  • the object of the invention is to provide a hydraulic drive system for a building material pump and a building material pump having such a hydraulic drive system which has improved properties in each case.
  • the invention solves this problem by providing a hydraulic drive system with the features of claim 1 and a building material pump with the features of claim 14.
  • Advantageous developments and/or refinements of the invention are described in the dependent claims.
  • the hydraulic drive system according to the invention for a building material pump has a hydraulic circuit, in particular at least one feed pump, at least one, in particular electrically, controllable pressure relief valve unit and a, in particular electrical, control unit.
  • the hydraulic circuit is designed for hydraulic fluid, in particular oil.
  • the feed pump, in particular at least one is designed for feeding hydraulic fluid into the hydraulic circuit, in particular automatically.
  • the pressure-limiting valve unit is for, in particular, automatic, variable or changeable or controllable setting, in particular at least one limit pressure, in particular a limit pressure value or Limit pressure amount, formed by hydraulic fluid of at least one section of the hydraulic circuit within a pressure range, in particular a pressure value range, in particular in or during operation of the hydraulic drive system, in particular delivery operation of the building material pump.
  • the at least one pressure-limiting valve unit has, in particular, at least one, in particular electrically, controllable proportional pressure-limiting valve.
  • the proportional pressure-limiting valve is designed for the, in particular automatic, continuous setting of the limit pressure, in particular its value, of hydraulic fluid in at least one section of the hydraulic circuit within the pressure range.
  • the control unit is designed to actuate the pressure-limiting valve unit, in particular automatically, as a function of at least one, in particular user-desired, operating parameter, in particular an operating parameter value or operating parameter amount, of the hydraulic drive system and/or hydraulic fluid in such a way that the pressure-limiting valve unit exceeds the limit pressure of the section of the hydraulic circuit, in particular variable, adjusted.
  • the control unit is designed to actuate the proportional pressure relief valve, in particular automatically, as a function of the at least one operating parameter, such that the proportional pressure relief valve sets the limit pressure of the section of the hydraulic circuit, in particular continuously.
  • the feed pump can overcome the limit pressure or have to work against it. This thus enables energy or power consumption of the feed pump to meet requirements, in particular a reduction in the energy or power consumption of the feed pump. This enables energy or power to be saved.
  • the limit pressure or its value when there is a change in the at least one operating parameter or its value, the limit pressure or its value can be changed, in particular actively. Additionally or alternatively, if there is no change in the operating parameter or its value, the limit pressure or its value does not need to be changed. In other words: if there is no change in the operating parameter, the limit pressure or its value can be set constant or kept constant or left unchanged. In other words: the limit pressure or its value and the at least one operating parameter or its value can be linked to one another, in particular by means of a function.
  • the hydraulic circuit can have at least one hydraulic line, in particular a pipe and/or a hose.
  • the hydraulic drive system can have a container or tank, in particular a reservoir, for or with hydraulic fluid.
  • the feed pump can be designed to feed in hydraulic fluid from the container. Additionally or alternatively, the feed pump can be a fixed displacement pump. Furthermore, additionally or alternatively, the feed pump can be designed for direct and/or indirect feeding into the at least one section.
  • the pressure relief valve unit can be referred to as a pressure control unit.
  • the hydraulic drive system can have at least one, in particular electrical, pressure sensor.
  • the pressure sensor can be designed for, in particular automatic, measurement, in particular regulation, of the limit pressure, in particular the limit pressure value or limit pressure amount, of hydraulic fluid in the section of the hydraulic circuit.
  • the control unit and/or the pressure-limiting valve unit can be designed to set, in particular regulate, the limit pressure as a function of the measured limit pressure.
  • the control unit and/or the pressure-limiting valve unit in particular in each case, can have a signal connection, in particular an electrical signal connection, with the pressure sensor. Additionally or alternatively, this can be referred to as pressure regulation.
  • the pressure-limiting valve unit can be designed to set the limit pressure to at least three different limit pressure values.
  • the pressure-limiting valve unit can be designed to adjust the limit pressure in pressure value increments of a maximum of 5 bar, in particular a maximum of 4 bar, in particular a maximum of 3 bar, in particular a maximum of 2 bar, in particular a maximum of 1 bar, in particular for continuous adjustment.
  • the pressure range can have a minimum limit pressure value and a maximum limit pressure value or be defined by them.
  • the proportional pressure relief valve can be referred to as a proportional pressure control valve.
  • the operating parameter or its value can change in stages, in particular continuously.
  • the control unit can have a user-actuable control panel for operating the hydraulic drive system, in particular the building material pump, in particular an input device for user input or user selection of the at least one operating parameter or its value. Additionally or alternatively, the control unit can be designed to determine or determine, in particular automatically, in particular a calculation, of the limit pressure or its value as a function of the at least one operating parameter. In other words: the limit pressure can depend on the at least one operating parameter and/or must have a specific or required value in order to achieve the operating parameter, which is particularly desired by the user.
  • the control unit can have a processor and/or a memory.
  • the control unit can have a signal connection, in particular an electrical signal connection, with the pressure-limiting valve unit.
  • the hydraulic drive system has a drive motor.
  • the drive motor is designed to drive the feed pump, in particular automatically.
  • the needs-based setting of the limit pressure or its value enables a needs-based energy or power consumption of the drive motor.
  • the drive motor can be an internal combustion engine, in particular a diesel engine, or an electric motor.
  • the at least one operating parameter is a drive state, a drive flow, a drive pressure, a drive speed, a cooling flow, a temperature and/or a degree of contamination.
  • the drive state can be on or off or drive or non-drive, in particular of the building material pump.
  • the limit pressure can be lowered, in particular to the minimum limit pressure value.
  • the drive flow and/or the drive pressure can each have a value or absolute value, in particular a variable value, and/or be an operating parameter of the hydraulic fluid.
  • the drive speed can have an in particular variable value or amount and/or be an operating parameter of the feed pump and/or the drive motor, if present.
  • the cooling flow, the temperature and/or the degree of contamination can each have a, in particular variable, value or amount and/or be an operating parameter of the hydraulic fluid.
  • the pressure range is from a minimum of 2.5 bar to a maximum of 40 bar, in particular from a minimum of 5 bar to a maximum of 35 bar, in particular from a minimum of 10 bar to a maximum of 30 bar, in particular from a minimum of 15 bar to a maximum of 25 bar .
  • the at least one section of the hydraulic circuit has a feed pressure section for hydraulic fluid.
  • the at least one pressure-limiting valve unit has a feed pressure-limiting valve unit that can be actuated, in particular electrically.
  • the feed pressure limiting valve unit is designed for the, in particular automatic, variable setting of a feed limit pressure, in particular a feed limit pressure value or a feed limit pressure amount, of hydraulic fluid of the feed pressure section within the pressure range.
  • the control unit can be designed to actuate the feed pressure limiting valve unit, in particular automatically, depending on the at least one operating parameter, in such a way that the feed pressure limiting valve unit adjusts the feed limit pressure of the feed pressure section, in particular variably.
  • the supply limit pressure or its value can depend on the drive condition, the drive flow, the drive pressure, the drive speed, the cooling flow, the temperature and/or the degree of contamination, if any.
  • the boost pressure limiting valve unit can be referred to as a boost pressure control unit.
  • the feed pump can be designed for immediate or direct feeding into the feed pressure section.
  • the hydraulic drive system has, in particular, at least one variably adjustable drive pump and at least one, in particular electrically controllable, hydraulic pressure-based actuator.
  • the drive pump is for, in particular automatically, generating a, in particular, variable drive flow, in particular with a variable drive flow value or drive flow amount, with a, in particular, variable drive pressure, in particular with a variable drive pressure value or drive pressure amount, of hydraulic fluid in at least one drive pressure section of the hydraulic circuit educated.
  • the actuator is designed for the, in particular automatic, variable adjustment of the drive pump by means of a variable control pressure, in particular with a variable control pressure value or control pressure amount, of hydraulic fluid.
  • the at least one section, in particular the feed pressure section, if present, of the hydraulic circuit is designed for the, in particular automatic, hydraulic pressure supply of the at least one actuator with hydraulic fluid at the set limit pressure, in particular the set feed limit pressure, if present, for the control pressure.
  • the control unit is there designed to control the at least one actuator, in particular automatically, as a function of the at least one operating parameter, in such a way that the at least one actuator adjusts the drive pump, in particular variably, to generate the variable drive flow with the variable drive pressure of hydraulic fluid in the at least one drive pressure section.
  • the drive pressure section can be referred to as a high and/or low pressure section. Additionally or alternatively, the drive pressure section may be different from the feed pressure section, if any.
  • the feed pressure section can be designed to feed hydraulic fluid into the drive pressure section, in particular by means of at least one feed check valve of the hydraulic drive system. In other words: the feed pump can be designed for direct or indirect feeding into the drive pressure section.
  • the drive speed can be an operating parameter of the drive pump.
  • the drive motor can be designed to drive the drive pump, in particular automatically.
  • the actuating pressure can depend on the operating parameter, in particular on the drive state, the drive flow, the drive pressure and/or the drive speed, and/or must have a specific or required value in order to achieve the operating parameter, which is particularly desired by the user.
  • the control unit can be designed to determine or determine, in particular automatically, in particular a calculation, of the control pressure or its value as a function of the at least one operating parameter.
  • the limit pressure in particular the feed pressure, if present, can be dependent on the control pressure and/or must have a specific or required value in order to achieve the control pressure.
  • the control unit can be designed to determine or determine, in particular automatically, in particular a calculation, of the limit pressure or its value as a function of the control pressure.
  • the control unit can have a signal connection, in particular a hydraulic one, with the actuator.
  • the power pump in the power off state, if any, the power pump only needs to generate a relatively low power flow or even no power flow at all.
  • a relatively low control pressure or no control pressure can be required for the adjustment of the drive pump.
  • the limit pressure can be lowered, in particular to the minimum limit pressure value.
  • the minimum limit pressure value can make it possible to maintain a function of the drive pump or to avoid damage to the drive pump.
  • a relatively higher actuating pressure may be required, in particular as a function of the drive flow, the drive pressure and/or the drive speed.
  • a relatively higher confining pressure may be required.
  • the drive pump can be an axial piston pump with a variably adjustable displacement.
  • the at least one actuator can be designed for, in particular automatic, variable adjustment of the displacement.
  • the drive pump is an axial piston pump with a variably adjustable swash plate.
  • the at least one actuator is designed for, in particular automatic, variable adjustment of the swash plate.
  • a swivel angle of the swash plate can depend on the operating parameter, in particular on the drive state and/or the drive flow, and/or must have a specific or required value in order to achieve the operating parameter, which is particularly desired by the user.
  • the control unit can be designed to determine or determine, in particular automatically, in particular a calculation, of the swivel angle or its value as a function of the at least one operating parameter.
  • the hydraulic drive system has at least one drive cylinder and an associated drive piston, which is arranged in particular in the drive cylinder.
  • the drive pump is designed by generating the drive flow of hydraulic fluid for the, in particular automatic, variable movement of the at least one drive piston, in particular in the drive cylinder.
  • the hydraulic drive system can have at least one pump line.
  • the drive pump and the drive cylinder can be connected by means of the pump line for a flow of hydraulic fluid, in particular between the drive pump and the drive cylinder.
  • the drive piston can be designed to be pressurized with hydraulic fluid.
  • the control unit can be designed to control the movement of the drive piston, in particular automatically, as a function of the at least one operating parameter.
  • the hydraulic drive system has at least two drive cylinders and associated ones, in particular arranged in the respective drive cylinder Drive piston and a swing line for hydraulic fluid.
  • the drive pump and the two drive cylinders form a closed drive circuit for hydraulic fluid by means of the swing line.
  • the two drive pistons are coupled by means of the swing line, in particular in phase opposition.
  • the two drive cylinders can be connected by means of the swing line for a flow of hydraulic fluid, in particular between the drive cylinders.
  • the hydraulic drive system can have at least two pump lines.
  • the drive pump and the two drive cylinders can form the closed drive circuit for hydraulic fluid by means of the swing line and the two pump lines.
  • the drive pump and one of the two drive cylinders can be connected by means of one of the two pump lines for a flow of hydraulic fluid, in particular between the drive pump and the drive cylinder.
  • the drive pump and another of the two drive cylinders can be connected by means of another of the two pump lines for a flow of hydraulic fluid, in particular between the drive pump and the drive cylinder.
  • the drive pump or the closed drive circuit can have a high-pressure side and a low-pressure side, which in particular can be cyclically interchanged, in particular in or during operation of the hydraulic drive system, in particular delivery operation of the building material pump.
  • the drive pressure can be referred to as high pressure, in particular on the high pressure side.
  • a low pressure or low limit pressure, in particular on the low-pressure side can be produced or generated by the feed pump, in particular the feed limit pressure, if present.
  • the drive pressure or high pressure or its value can be higher than the low pressure or low limit pressure or its value.
  • a closed drive circuit can refer to a flow of hydraulic fluid from the drive pump, in particular its high-pressure side, through the one pump connection, the one drive cylinder, the swing connection, the other drive cylinder, the other pump connection to the drive pump, in particular its low-pressure side.
  • the at least one section of the hydraulic circuit has at least one low-pressure section for hydraulic fluid.
  • the at least one pressure relief valve unit has a low-pressure relief valve unit that can be actuated, in particular electrically.
  • the low-pressure limiting valve unit is designed for the, in particular automatic, variable setting of a low-limit pressure, in particular a low-limit pressure value or low-limit pressure amount, of hydraulic fluid in the at least one low-pressure section within the pressure region.
  • the control unit can be designed to, depending on the at least one operating parameter to control the low-pressure limiting valve unit, in particular automatically, in such a way that the low-pressure limiting valve unit sets the low-limit pressure of the at least one low-pressure section, in particular variably.
  • the low-limit pressure or its value can depend on the cooling flow, the temperature and/or the degree of contamination, if any.
  • the low-pressure relief valve unit can be referred to as a low-pressure control unit.
  • the low-pressure section can be referred to as the drive pressure section.
  • the low pressure section may be different from the boost pressure section, if any.
  • the feed pressure section can be designed to feed hydraulic fluid into the low-pressure section, in particular by means of at least one feed check valve of the hydraulic drive system.
  • the feed pump can be designed for direct or indirect feeding into the low-pressure section.
  • the low limit pressure or its value can be lower than the feed limit pressure or its value.
  • the hydraulic drive system can have an alternating scavenging valve.
  • the low-pressure section and the low-pressure relief valve unit can be connected by means of the shuttle flushing valve for a flow of hydraulic fluid, in particular from the low-pressure section to the low-pressure relief valve unit.
  • the hydraulic drive system has a cooler.
  • the cooler is designed for, in particular automatic, cooling of hydraulic fluid.
  • the at least one pressure-limiting valve unit is designed by setting the limit pressure for the, in particular automatic, variable setting of, in particular, the cooling flow of hydraulic fluid via or through the cooler.
  • the control unit is designed to actuate the pressure limiting valve unit, in particular automatically, as a function of the at least one operating parameter, in particular the temperature, if present, in such a way that the pressure limiting valve unit adjusts the cooling flow of hydraulic fluid via the cooler, in particular variably. This enables a needs-based or adaptive setting or adjustment, in particular a reduction, of the cooling flow.
  • the cooling flow or its value can be adjusted or defined via or by a pressure difference between the feed limit pressure and the low limit pressure, if any.
  • the low limit pressure can be in Depending on the cooling flow required, in particular, and the feed limit pressure required, in particular, be set.
  • the hydraulic drive system can be designed to flush out or discharge the cooling flow from the hydraulic circuit, in particular the section, in particular the low-pressure section, in particular the closed drive circuit, if present, via the cooler.
  • the at least one pressure-limiting valve unit is, in particular, automatically and/or variably flushed or discharged hydraulic fluid out of the hydraulic circuit, in particular the section, in particular to the feed pump and/or into the container, if present variable setting of the limit pressure formed.
  • the pressure-limiting valve unit can be designed as a throttle valve unit.
  • the hydraulic drive system has at least one, in particular electrical, measuring sensor.
  • the measuring sensor is designed for the, in particular automatic, measurement of at least one property, in particular a value or magnitude of the property and/or one, in particular the, temperature and/or one, in particular the, degree of contamination, of the hydraulic drive system and/or hydraulic fluid.
  • the control unit is designed to determine, in particular automatically, the at least one operating parameter as a function of the measured property.
  • the control unit can have a signal connection, in particular an electrical signal connection, to the measuring sensor. Additionally or alternatively, the operating parameter can correspond to or be the measured property.
  • the invention relates to a building material pump.
  • the building material pump according to the invention has a building material delivery unit and the hydraulic drive system.
  • the building material delivery unit is designed for, in particular automatic, delivery of building material.
  • the hydraulic drive system is designed to drive the building material conveyor unit, in particular automatically.
  • the building material pump can enable the same advantages as the previously described hydraulic drive system.
  • the building material pump or the building material delivery unit or the building material can have at least one, in particular variable or variable funding parameters, in particular with a value or amount.
  • the at least one delivery parameter can be a delivery condition, a delivery flow and/or a delivery pressure.
  • the at least one operating parameter can be dependent on the at least one delivery parameter and/or must have a specific or required value in order to achieve the delivery parameter, which is particularly desired by the user.
  • the drive status can depend on the delivery status
  • the drive flow can depend on the delivery flow and/or the drive pressure can depend on the delivery pressure, if present.
  • control unit can be designed to determine or determine, in particular automatically, in particular a calculation, of the at least one operating parameter or its value as a function of the at least one delivery parameter.
  • control unit can have a user-actuable control panel for operating the building material pump or the hydraulic drive system, in particular an input device for user input or user selection of the at least one delivery parameter or its value.
  • the building material pump can be referred to as a concrete pump or thick matter pump.
  • Thick material can refer to mortar, cement, screed, concrete, plaster and/or mud.
  • the device can be designed as a mobile device, in particular as a car building material pump.
  • the building material pump 200 has a building material delivery unit 210 and a hydraulic drive system 100 according to the invention.
  • the building material delivery unit 210 is designed to deliver building material BS.
  • the hydraulic drive system 100 is designed to drive the building material conveyor unit 210 .
  • the hydraulic drive system 100 has a hydraulic circuit 101, a feed pump 2, at least one controllable pressure relief valve unit 6, 24 and a control unit 27, as in FIG 1 shown.
  • the hydraulic circuit 101 is designed for hydraulic fluid HF.
  • the feed pump 2 is designed to feed hydraulic fluid HF into the hydraulic circuit 101 .
  • the pressure-limiting valve unit 6, 24 is designed to variably set a limit pressure p30, p31/32 of hydraulic fluid HF in at least one section 30, 31, 32 of the hydraulic circuit 101 within a pressure range pmin, pmax.
  • the control unit 27 is designed to control the pressure-limiting valve unit 6, 24 as a function of at least one operating parameter BP of the hydraulic drive system 100 and/or hydraulic fluid HF in such a way that the pressure-limiting valve unit 6, 24 exceeds the limit pressure p30, p31/32 of the section 30, 31, 32 of the hydraulic circuit 101 adjusts.
  • control unit 27 has an electrical signal connection with the pressure-limiting valve unit 6 , 24 .
  • the at least one operating parameter BP is a drive state, a drive flow, a drive pressure, a drive speed, a cooling flow, a temperature T and/or a degree of contamination.
  • the pressure range extends from a minimum of 10 bar pmin to a maximum of 35 bar pmax. In alternative exemplary embodiments, the pressure range can range from a minimum of 2.5 bar to a maximum of 40 bar.
  • the at least one pressure-limiting valve unit 6, 24 has a controllable proportional pressure-limiting valve.
  • the proportional pressure relief valve 6, 24 is designed to continuously adjust the limit pressure p30, p31/32 of hydraulic fluid HF in at least one section 30, 31, 32 of the hydraulic circuit 101 within the pressure range pmin, pmax.
  • the control unit 27 is designed to control the proportional pressure relief valve 6, 24 as a function of the at least one operating parameter BP in such a way that the proportional pressure relief valve 6, 24 sets the limit pressure p30, p31/32 of the section 30, 31, 32 of the hydraulic circuit 101.
  • the at least one pressure-limiting valve unit does not need to have a proportional pressure-limiting valve, or the at least one pressure-limiting valve unit can be configured differently.
  • the hydraulic drive system 100 has two controllable pressure-limiting valve units 6, 24.
  • the hydraulic drive system does not need to have two controllable pressure-limiting valve units or the hydraulic drive system can only have a single controllable pressure-limiting valve unit or at least three controllable pressure-limiting valve units.
  • the hydraulic drive system in particular instead of the pressure-limiting valve unit 6, can have a throttle valve unit, in particular a controllable one, in particular a proportional throttle valve.
  • the throttle valve unit can be designed to variably adjust a flow of hydraulic fluid.
  • the control unit can be designed to control the throttle valve unit depending on the at least one operating parameter of the hydraulic drive system and/or hydraulic fluid in such a way that the throttle valve unit can adjust the flow.
  • the at least one section of the hydraulic circuit 101 has a feed pressure section 30 for hydraulic fluid HF.
  • the pressure limiting valve unit 24 has a boost pressure limiting valve unit or is a boost pressure limiting valve unit.
  • the charge pressure limiting valve unit 24 is designed for the variable setting of a charge limit pressure p30 of hydraulic fluid HF of the charge pressure section 30 within the pressure range pmin, pmax.
  • the feed pump is designed for the direct feeding of hydraulic fluid HF from a container 50 of the hydraulic drive system 100 into the feed pressure section 30, as indicated by an arrow.
  • the at least one section of the hydraulic circuit 101 has at least one low-pressure section 31, 32 for hydraulic fluid HF.
  • the pressure relief valve unit 6 has a controllable low-pressure relief valve unit or is one Low pressure relief valve assembly.
  • the low-pressure limiting valve unit 6 is designed to variably set a low-limit pressure p31/32 of hydraulic fluid HF in the at least one low-pressure section 31, 32 within the pressure range pmin, pmax.
  • the hydraulic drive system can have a throttle valve unit, in particular the throttle valve unit, in particular instead of the low-pressure limiting valve unit.
  • the feed pressure section 30 is designed to feed hydraulic fluid HF into the low-pressure section 31, 32, as indicated by an arrow, in particular by means of at least one feed check valve 3, 4 of the hydraulic drive system 100.
  • the hydraulic circuit 101 has two low-pressure sections or high-pressure sections or drive pressure sections 31 , 32 .
  • the hydraulic drive system 100 has two feed check valves 3, 4.
  • the hydraulic drive system 100 has a variably adjustable drive pump 1 and at least one hydraulic pressure-based actuator 22, 23, in particular in the form of an actuating cylinder.
  • the drive pump 1 is designed to generate a variable drive flow with a variable drive pressure of hydraulic fluid HF in at least one, in particular the drive pressure section 31, 32 of the hydraulic circuit 101.
  • the actuator 22, 23 is designed for the variable adjustment of the drive pump 1 by a variable control pressure p28, p29 of hydraulic fluid HF.
  • the at least one section 30, in particular the feed pressure section 30, of the hydraulic circuit 101 is designed to supply hydraulic pressure to the at least one actuator 22, 23 with hydraulic fluid HF at the set limit pressure p30, in particular the set feed limit pressure p30, for the control pressure p28, p29.
  • the control unit 27 is designed to control the at least one actuator 22, 23 as a function of the at least one operating parameter BP in such a way that the at least one actuator 22, 23 uses the drive pump 1 to generate the variable drive flow with the variable drive pressure of hydraulic fluid HF in the at least one drive pressure section 31, 32 adjusted.
  • control unit 27 has a hydraulic signal connection with the at least one actuator 22, 23.
  • the hydraulic drive system 100 has two actuators 22, 23 based on hydraulic pressure.
  • the drive pump 1 is an axial piston pump with a variably adjustable swash plate.
  • the at least one actuator 22, 23 is designed for variable adjustment of the swash plate.
  • the hydraulic drive system 100 has at least one drive cylinder 7, 8 and an associated drive piston 97, 98.
  • the drive pump 1 is designed to move the at least one drive piston 97, 98 by generating the drive flow of hydraulic fluid HF.
  • the hydraulic drive system 100 has at least two, in particular exactly two, drive cylinders 7, 8 and associated drive pistons 97, 98 in each case.
  • the hydraulic drive system 100 has a swing line 19 for hydraulic fluid HF.
  • the drive pump 1 and the two drive cylinders 7, 8 form a closed drive circuit for hydraulic fluid HF by means of the swing line 19.
  • the two drive pistons 97, 98 are coupled by means of the swing line 19, in particular in phase opposition.
  • the two drive cylinders 7, 8 are connected by means of the swing line 19.
  • the hydraulic drive system 100 has two pump lines 17, 18 for hydraulic fluid HF.
  • the drive pump 1 and the drive cylinder 7 are connected by means of the pump line 17 .
  • the drive pump 1 and the drive cylinder 8 are connected by means of the pump line 18 .
  • the drive pump 1 and the two drive cylinders 7, 8 form the closed drive circuit for hydraulic fluid HF by means of the swing line 19 and the two pump lines 17, 18.
  • the drive state is on, a drive flow that is particularly required is relatively high and a drive pressure that is particularly required is relatively high.
  • the feed limit pressure p30 is therefore set to 32 bar, in particular constant.
  • the low-limit pressure p31 is set to 30 bar, in particular constant.
  • the drive pump 1 or the closed drive circuit has a high-pressure side HD and a low-pressure side ND, which are cyclically interchanged when the hydraulic drive system 100 or the building material delivery unit 210 is in operation.
  • the drive pressure or high pressure HD is higher than the low limit pressure p31 or low pressure ND.
  • Hydraulic fluid HF with the drive pressure or high pressure HD flows from the drive pump 1 through the pump line 18 to the drive cylinder 8, as indicated by an arrow.
  • the pump line 18 and the drive cylinder 8 form, in particular at least partially, the high-pressure section 32.
  • Hydraulic fluid HF particularly at a swing pressure, flows from the power cylinder 8 through the swing line 19 to the power cylinder 7 as indicated by an arrow.
  • the swing line 19 and the drive cylinder 7 form, in particular at least partially, a swing pressure section.
  • Hydraulic fluid HF with the low limit pressure p31 or low pressure ND flows from the drive cylinder 7 through the pump line 17 to the drive pump 1, as indicated by an arrow.
  • the pump line 17 and the drive cylinder 7 form, in particular at least partially, the low-pressure section 31.
  • the feed pressure section 30 feeds the low pressure section 31, as indicated by the arrow, in particular by means of the feed check valve 3.
  • the power state may be on, but power flow medium and power pressure medium.
  • the feed limit pressure can then be lowered to, for example, 22 bar and, in particular, set to be constant, and the low limit pressure can be lowered to, for example, 20 bar and, in particular, set to be constant.
  • the power state may be off.
  • the feed limit pressure can then be lowered to, for example, 12 bar and, in particular, set to be constant, and the low limit pressure can be lowered to, for example, 10 bar and, in particular, set to be constant.
  • the at least one pressure-limiting valve unit 6, 24 is designed to variably set the limit pressure p30, p31/32 by flushing hydraulic fluid HF out of the hydraulic circuit 101, in particular into the container 50.
  • the at least one pressure-limiting valve unit can be designed for variable adjustment of the limit pressure by flushing hydraulic fluid out of the hydraulic circuit, in particular through a filter and/or to the feed pump, in particular to a suction side of the feed pump.
  • the charge pressure limiting valve unit 24 is designed to variably adjust the charge limit pressure p30 by flushing hydraulic fluid HF out of the charge pressure section 30, as indicated by an arrow.
  • the low-pressure limiting valve unit 6 is designed to variably adjust the low-limit pressure p31/32 by flushing hydraulic fluid HF out of the low-pressure section 31, 32, as indicated by an arrow.
  • the hydraulic drive system can have a throttle valve unit, in particular the throttle valve unit, in particular instead of the low-pressure limiting valve unit.
  • the throttle valve unit can be designed to variably adjust a flow, in particular a flushing flow, of hydraulic fluid out of the low-pressure section.
  • the control unit can be designed to, depending on the at least one operating parameter of the hydraulic drive system and / or Hydraulic fluid to control the throttle valve unit in such a way that the throttle valve unit can adjust the flow of hydraulic fluid from the low-pressure section.
  • a part of the hydraulic fluid HF flows from the low-pressure section 31 to the drive pump 1. Another part of the hydraulic fluid HF is flushed out of the low-pressure section 31.
  • the hydraulic drive system 100 has an alternating scavenging valve 5 .
  • the low-pressure section 31, 32 and the low-pressure relief valve unit 6 are connected by means of the alternating scavenging valve 5 for a flow of hydraulic fluid HF.
  • Hydraulic fluid HF flows from the low pressure section 31 through the shuttle scavenging valve 5 to the low pressure relief valve unit 6 as indicated by an arrow.
  • the hydraulic drive system 100 has two, in particular hydraulic, control lines 25, 26 for, in particular automatic, control of the alternating scavenging valve 5.
  • the hydraulic drive system 100 has two flushing lines 20, 21 for hydraulic fluid HF.
  • the pump line 17 and the alternating flushing valve 5 are connected by means of the flushing line 21 .
  • the pump line 18 and the alternating flushing valve 5 are connected by means of the flushing line 20 .
  • the alternating scavenging valve 5 is designed to connect that scavenging line 20, 21 to the low-pressure limiting valve unit 6, in particular for a flow of hydraulic fluid HF from the respective scavenging line 20, 21 to the low-pressure limiting valve unit 6, which has a relatively lower pressure than the other scavenging line. in 1 the flushing line 21.
  • the hydraulic drive system 100 also has a cooler 60 .
  • the cooler 60 is designed to cool hydraulic fluid HF.
  • the at least one pressure-limiting valve unit 6, 24 is designed to variably adjust one, in particular the, cooling flow of hydraulic fluid HF via the cooler 60 by adjusting the limit pressure p30, p31/32.
  • the control unit 27 is designed to actuate the pressure limiting valve unit 6, 24 as a function of the at least one operating parameter BP, in particular the temperature T, in such a way that the pressure limiting valve unit 6, 24 adjusts the cooling flow of hydraulic fluid HF via the cooler 60.
  • the hydraulic drive system in particular instead of the pressure-limiting valve unit 6, can have a throttle valve unit, in particular the throttle valve unit.
  • the throttle valve unit can be designed for the variable adjustment of a cooling flow, in particular the cooling flow, of hydraulic fluid via the cooler.
  • the control unit can be designed to control the throttle valve unit as a function of the at least one operating parameter, in particular the temperature, in such a way that the throttle valve unit can adjust the cooling flow of hydraulic fluid via the cooler.
  • the cooling flow is adjusted by a pressure difference between the feed limit pressure p30 and the low limit pressure p 31/32.
  • the temperature T is medium.
  • the pressure difference is therefore set to 2 bar, in particular constant.
  • the temperature can be relatively high.
  • the pressure difference can then be increased to, for example, 3 bar and, in particular, set to be constant.
  • the low limit pressure in particular relative to the supply limit pressure, can be lowered and, in particular, set to be constant.
  • the temperature may be relatively low.
  • the pressure difference can then be lowered to, for example, 1 bar and, in particular, set to be constant.
  • the low limit pressure, in particular relative to the feed limit pressure can be increased and, in particular, set to be constant.
  • the hydraulic drive system 100 is designed to flush the cooling flow out of the hydraulic circuit 101, in particular the low-pressure section 31, 32, via the cooler 60.
  • the cooler 60 is arranged, in particular in the direction of flow, after or behind the low-pressure limiting valve unit 6 and in particular in front of the container 50 .
  • hydraulic fluid HF flows from the low-pressure relief valve unit 6 over or through the cooler 60 to the container 50, as indicated by an arrow.
  • the hydraulic drive system can be used to flush the cooling flow out of the hydraulic circuit, in particular the low-pressure section, via the cooler, in particular through a filter, in particular the filter, and/or to the feed pump, in particular to one, in particular the, suction side of the feed pump. be trained.
  • hydraulic fluid can flow from the low-pressure limiting valve unit via or through the cooler, and in particular one, in particular the filter, to the feed pump, in particular to one, in particular the, suction side of the feed pump.
  • Hydraulic drive system in particular instead of the low-pressure relief valve unit, one, in particular, have the throttle valve unit.
  • the hydraulic drive system 100 has at least one measuring sensor 80 .
  • Measuring sensor 80 is designed to measure at least one property of hydraulic drive system 100 and/or hydraulic fluid HF.
  • the control unit 27 is designed to determine the at least one operating parameter BP as a function of the measured property.
  • control unit 27 has an electrical signal connection with the measuring sensor 80 .
  • the hydraulic drive system 100 has only a single measurement sensor 80 .
  • the hydraulic drive system can have at least two measuring sensors.
  • measuring sensor 80 is designed to measure a temperature T of hydraulic fluid HF and thus of hydraulic drive system 100 .
  • the control unit 27 is designed to determine the at least one operating parameter BP as a function of the measured temperature T.
  • the measuring sensor 80 is designed to measure the temperature T of hydraulic fluid HF in the low-pressure section 31, 32.
  • the measuring sensor 80 is arranged, in particular in the direction of flow, in particular after the alternating scavenging valve 5 and before the low-pressure limiting valve unit 6 .
  • the measuring sensor can be arranged on or in the drive pump, in particular in the leakage oil of the drive pump.
  • the hydraulic drive system 100 has a drive motor 70 .
  • the drive motor 70 is designed to drive the feed pump 2 and, in particular, the drive pump 1 as well.
  • the building material conveying unit 210 has at least one, in particular two, conveying cylinders 34, 35 and one, in particular two, associated conveying pistons 38, 39, in particular arranged in the conveying cylinders 34, 35, as in FIG 2 shown.
  • the at least one delivery cylinder 34, 35 is designed for building material BS.
  • the at least one delivery cylinder 34, 35 is designed to pressurize building material BS.
  • the hydraulic drive system 100 has at least one, in particular two, piston rods 95, 96.
  • the at least one piston rod 95, 96 is designed to couple or transmit movement of the at least one drive piston 97, 98 to the at least one delivery piston 38, 39.
  • the at least one piston rod 95, 96 is attached to the at least one drive piston 97, 98 and/or to the at least one delivery piston 38, 39.
  • the building material conveying unit 210 has a diverter system 99 .
  • the invention provides an advantageous hydraulic drive system for a building material pump and an advantageous building material pump having such a hydraulic drive system that has improved properties, in particular enabling savings in energy or power.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Fluid Mechanics (AREA)
  • Fluid-Pressure Circuits (AREA)
  • Details Of Reciprocating Pumps (AREA)
EP19731183.0A 2018-06-14 2019-06-07 Hydraulikantriebssystem für eine baustoffpumpe und baustoffpumpe Active EP3807534B1 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102018209513.2A DE102018209513B3 (de) 2018-06-14 2018-06-14 Hydraulikantriebssystem für eine Baustoffpumpe und Baustoffpumpe
PCT/EP2019/064944 WO2019238559A1 (de) 2018-06-14 2019-06-07 Hydraulikantriebssystem für eine baustoffpumpe und baustoffpumpe

Publications (2)

Publication Number Publication Date
EP3807534A1 EP3807534A1 (de) 2021-04-21
EP3807534B1 true EP3807534B1 (de) 2023-05-24

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Application Number Title Priority Date Filing Date
EP19731183.0A Active EP3807534B1 (de) 2018-06-14 2019-06-07 Hydraulikantriebssystem für eine baustoffpumpe und baustoffpumpe

Country Status (7)

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US (1) US11231054B2 (ja)
EP (1) EP3807534B1 (ja)
JP (1) JP7350788B2 (ja)
KR (1) KR102673424B1 (ja)
CN (1) CN112567132B (ja)
DE (1) DE102018209513B3 (ja)
WO (1) WO2019238559A1 (ja)

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Publication number Priority date Publication date Assignee Title
DE102021212756B3 (de) 2021-11-12 2022-11-10 Putzmeister Engineering Gmbh Hydraulikantriebssystem für ein Bau- und/oder Dickstoffpumpensystem, Bau- und/oder Dickstoffpumpensystem und Verfahren zum Betreiben eines Hydraulikantriebssystems und/oder eines Bau- und/oder Dickstoffpumpensystems
CN115773291B (zh) * 2022-11-14 2023-06-02 中国船舶集团有限公司第七〇四研究所 一种带有冲洗回路的减摇鳍闭式液压系统

Family Cites Families (16)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS59226288A (ja) * 1983-06-06 1984-12-19 Kyokuto Kaihatsu Kogyo Co Ltd 流動体圧送用ピストンポンプの油圧作動装置
JP3038557B2 (ja) * 1990-04-11 2000-05-08 石川島建機株式会社 粘性流体ポンプの吐出量制御装置
ATE139824T1 (de) 1992-03-21 1996-07-15 Schwing Gmbh F Dickstoffpumpe
DE10036202A1 (de) * 2000-07-24 2002-02-07 Putzmeister Ag Dickstoffpumpe
DE10134789C2 (de) * 2001-06-15 2003-08-28 Kaessbohrer Gelaendefahrzeug Fahrantrieb für ein Kettenfahrzeug
DE10150467A1 (de) 2001-10-16 2003-04-17 Putzmeister Ag Dickstoffpumpe mit Fördermengenregelung
DE102005008217A1 (de) * 2005-02-22 2006-08-31 Putzmeister Ag Hydraulikantrieb, insbesondere für Zweizylinder-Dickstoffpumpen
US8042333B2 (en) 2007-03-14 2011-10-25 Hampton Hydraulics Oil cooling circuit for continuously reciprocating hydraulic cylinders
DE102009021833A1 (de) 2009-05-19 2010-11-25 Robert Bosch Gmbh Hydraulischer Antrieb und Drehschieberventil für einen hydraulischen Antrieb
DE102009047732A1 (de) 2009-12-09 2011-06-16 Zf Friedrichshafen Ag Hydrostatisches Getriebe
DE102010045541A1 (de) 2010-09-15 2012-03-15 Robert Bosch Gmbh Hydrostatisches Getriebe
DE102012101231A1 (de) * 2012-02-16 2013-08-22 Linde Material Handling Gmbh Hydrostatisches Antriebssystem
DE102012209142A1 (de) 2012-05-31 2013-12-05 Putzmeister Engineering Gmbh Hydrauliksystem
DE102012107933B4 (de) * 2012-08-28 2017-09-21 Götz Hudelmaier Dickstoffpumpe zur Erzeugung eines kontinuierlichen Dickstoffstroms sowie Verfahren zum Betrieb einer Dickstoffpumpe zur Erzeugung eines kontinuierlichen Dickstoffstroms
US10539130B2 (en) * 2016-04-26 2020-01-21 Robert Bosch Gmbh Pressure-maintaining valve arrangement for a purge circuit of a closed hydraulic circuit
JP6757238B2 (ja) 2016-11-24 2020-09-16 川崎重工業株式会社 油圧駆動システム

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US20210164497A1 (en) 2021-06-03
KR20210020016A (ko) 2021-02-23
JP2021528587A (ja) 2021-10-21
US11231054B2 (en) 2022-01-25
EP3807534A1 (de) 2021-04-21
CN112567132A (zh) 2021-03-26
WO2019238559A1 (de) 2019-12-19
JP7350788B2 (ja) 2023-09-26
KR102673424B1 (ko) 2024-06-07
CN112567132B (zh) 2023-05-26
DE102018209513B3 (de) 2019-10-17

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