EP3149330B1 - Integrated displacement controlled pump - Google Patents

Integrated displacement controlled pump Download PDF

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Publication number
EP3149330B1
EP3149330B1 EP15729006.5A EP15729006A EP3149330B1 EP 3149330 B1 EP3149330 B1 EP 3149330B1 EP 15729006 A EP15729006 A EP 15729006A EP 3149330 B1 EP3149330 B1 EP 3149330B1
Authority
EP
European Patent Office
Prior art keywords
pump
motor
shaft
pump system
mounting plate
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Active
Application number
EP15729006.5A
Other languages
German (de)
English (en)
French (fr)
Other versions
EP3149330A1 (en
Inventor
Roland Bublitz
Blaise GOUPY
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Parker Hannifin Corp
Original Assignee
Parker Hannifin Corp
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Parker Hannifin Corp filed Critical Parker Hannifin Corp
Publication of EP3149330A1 publication Critical patent/EP3149330A1/en
Application granted granted Critical
Publication of EP3149330B1 publication Critical patent/EP3149330B1/en
Active legal-status Critical Current
Anticipated expiration legal-status Critical

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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
    • F04B17/00—Pumps characterised by combination with, or adaptation to, specific driving engines or motors
    • F04B17/03—Pumps characterised by combination with, or adaptation to, specific driving engines or motors driven by electric motors
    • 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
    • F04B49/12—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 by varying the length of stroke of the working members
    • 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
    • F04B19/00—Machines or pumps having pertinent characteristics not provided for in, or of interest apart from, groups F04B1/00 - F04B17/00
    • F04B19/20—Other positive-displacement pumps
    • F04B19/22—Other positive-displacement pumps of reciprocating-piston type
    • 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
    • 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
    • F04B49/20—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 by changing the driving speed
    • 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
    • F04B53/00—Component parts, details or accessories not provided for in, or of interest apart from, groups F04B1/00 - F04B23/00 or F04B39/00 - F04B47/00
    • F04B53/22—Arrangements for enabling ready assembly or disassembly
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04C—ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT PUMPS
    • F04C11/00—Combinations of two or more machines or pumps, each being of rotary-piston or oscillating-piston type; Pumping installations
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04C—ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT PUMPS
    • F04C14/00—Control of, monitoring of, or safety arrangements for, machines, pumps or pumping installations
    • F04C14/08—Control of, monitoring of, or safety arrangements for, machines, pumps or pumping installations characterised by varying the rotational speed
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04C—ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT PUMPS
    • F04C14/00—Control of, monitoring of, or safety arrangements for, machines, pumps or pumping installations
    • F04C14/18—Control of, monitoring of, or safety arrangements for, machines, pumps or pumping installations characterised by varying the volume of the working chamber
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04C—ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT PUMPS
    • F04C15/00—Component parts, details or accessories of machines, pumps or pumping installations, not provided for in groups F04C2/00 - F04C14/00
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04C—ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT PUMPS
    • F04C2/00—Rotary-piston machines or pumps
    • F04C2/08—Rotary-piston machines or pumps of intermeshing-engagement type, i.e. with engagement of co-operating members similar to that of toothed gearing
    • F04C2/10—Rotary-piston machines or pumps of intermeshing-engagement type, i.e. with engagement of co-operating members similar to that of toothed gearing of internal-axis type with the outer member having more teeth or tooth-equivalents, e.g. rollers, than the inner member
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04C—ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT PUMPS
    • F04C2/00—Rotary-piston machines or pumps
    • F04C2/30—Rotary-piston machines or pumps having the characteristics covered by two or more groups F04C2/02, F04C2/08, F04C2/22, F04C2/24 or having the characteristics covered by one of these groups together with some other type of movement between co-operating members
    • F04C2/34—Rotary-piston machines or pumps having the characteristics covered by two or more groups F04C2/02, F04C2/08, F04C2/22, F04C2/24 or having the characteristics covered by one of these groups together with some other type of movement between co-operating members having the movement defined in groups F04C2/08 or F04C2/22 and relative reciprocation between the co-operating members
    • F04C2/344—Rotary-piston machines or pumps having the characteristics covered by two or more groups F04C2/02, F04C2/08, F04C2/22, F04C2/24 or having the characteristics covered by one of these groups together with some other type of movement between co-operating members having the movement defined in groups F04C2/08 or F04C2/22 and relative reciprocation between the co-operating members with vanes reciprocating with respect to the inner member
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04C—ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT PUMPS
    • F04C2240/00—Components
    • F04C2240/40—Electric motor
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04C—ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT PUMPS
    • F04C2240/00—Components
    • F04C2240/80—Other components
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04C—ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT PUMPS
    • F04C2270/00—Control; Monitoring or safety arrangements
    • F04C2270/18—Pressure
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04C—ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT PUMPS
    • F04C2270/00—Control; Monitoring or safety arrangements
    • F04C2270/20—Flow
    • F04C2270/205—Controlled or regulated

Definitions

  • the present invention relates to control of hydraulic fluid systems, and particularly to electronically controlled hydraulic pumps and motors.
  • Hydraulic fluid systems are utilized to generate power in a variety of industries. Mining and drilling equipment, construction equipment, motor vehicle transmission systems, and various other industrial applications employ such hydraulic systems.
  • a hydraulic fluid system may be employed to drive an external device, such as a wheel shaft, a fan, or other like external device.
  • a hydraulic motor receives control signals, and based on such control signals a motor output shaft drives a hydraulic pump.
  • the hydraulic pump in turn pumps hydraulic fluid for driving an external device.
  • the driving of the external device is regulated through the control of hydraulic fluid flow through the system.
  • Control of hydraulic fluid flow typically is performed in part by motor control of the hydraulic pump, and additionally by the operation of valve systems that are operative between the pump and the external device being driven, and as between any external sources or drains for the hydraulic fluid.
  • a motor such as an electric motor, as referenced above controls the hydraulic pump.
  • the motor output torque drives an output shaft.
  • a spacer device typically is employed to space the pump apart from the motor, and the motor and the pump commonly are linked by an additional coupling shaft.
  • Such conventional configuration including a motor with an output shaft, spacer, coupling shaft, and hydraulic pump with a shaft has resulted in a bulky and costly configuration that may be unsuitable for certain applications in which a more compact design is desirable. Accordingly, hydraulic fluid systems have not been employed to their full potential.
  • US-4851703 discloses a powerpack which contains a motor, a pump, and a shaft which extends form the motor to the pump.
  • the shaft can operate as a motor output shaft and as a pump input shaft.
  • the powerpack includes a mounting plate through which it is mounted on a vehicle.
  • the present invention provides an enhanced motor-controlled hydraulic pump system that improves over the deficiencies of conventional pump system configurations, as defined in claim 1.
  • the present invention thus permits a more compact configuration as compared to conventional configurations with comparable performance, thereby being suitable for a broader range of applications.
  • the present invention provides an integrated, electronically controlled pump system by which a motor, such as an electric motor, drives the hydraulic pump operation.
  • a motor such as an electric motor
  • the pump system configuration permits the use of a single shaft extending from the electric motor into the pump so as to allow for an integrated design and assembly configuration.
  • a mounting accessory is attached to the motor over the shaft, and the shaft protrudes out from the mounting accessory and allows for the pump and motor to be attached to the shaft ends via the use of a splined, keyed, or bolted ends.
  • the pump may then be bolted to the motor through the mounting accessory to allow for a simplified construction, assembly, and alignment.
  • the electric motor may be any suitable motor type, such as for example an induction, permanent magnet, switched reluctance, or other electric motor type, and the motor may be an alternating current (AC) or direct current (DC) motor.
  • the pump may be any suitable hydraulic pump, and including a pump/motor assembly configuration, such as for example a vane, external gear, internal gear, bent axis piston, or axial piston pump/motor type of pump.
  • the motor may be an electric motor, and the pump may be a hydraulic pump.
  • a drive controller is configured to generate commands for controlling the electric motor, which in turn drives the pump to achieved a desired flow of hydraulic fluid.
  • Figs. 1 and 2 provide generalized schematic representations of exemplary hydraulic pump systems.
  • Figs. 1 and 2 are schematic drawings respectively depicting exemplary pump systems 10 and 12.
  • each of the pump systems 10 and 12 is a drive controlled pump system that includes a drive controller 14 that electronically controls a motor 16.
  • the motor 16 may be an electric motor and may be any suitable electric motor type.
  • the electric motor may be an induction, permanent magnet, switched reluctance, or other electric motor type, and the motor may be an alternating current (AC) or direct current (DC) motor.
  • a user controls operation of the motor 16 by actuating the drive controller 14, which is configured to generate appropriate electronic commands for controlling the motor.
  • the drive controller 14 may be configured as an AC drive unit that includes a frequency controller and related control electronics as are known in the art.
  • the drive controller 14 enables the system to provide the exact power that is required in the control cycle at all times.
  • the drive controller 14 is configured to continuously record target values for the volume flow and/or pressure of a machine control system for the particular application, and compares the target values to actual pressure or flow values of the machine control system.
  • the drive speed of the electric motor 16 is thus regulated so that the pump provides the exact amount of a working fluid, such as hydraulic fluid, required to achieve the target values.
  • the hydraulic pump may be configured as a variable displacement type pump 18.
  • the hydraulic pump may be configured as a fixed displacement type pump 20.
  • the pump may be any suitable hydraulic pump, including a pump/motor assembly configuration, such as for example a vane, external gear, internal gear, bent axis piston, or axial piston pump/motor type of pump.
  • FIG. 3 is a drawing depicting a longitudinal axial cross-sectional view of an exemplary pump system 30 in accordance with embodiments of the present invention.
  • Fig. 4 is a drawing depicting a top view of the pump system 30 of Fig. 3 .
  • Fig. 5 is a drawing depicting a back view of the pump system 30 of Fig. 3 .
  • Fig. 6 is a drawing depicting a pump end view of the pump system 30 of Fig. 3 .
  • Fig. 7 is a drawing depicting an isometric view of the pump system 30 of Fig. 3 . Accordingly, like components of the pump system 30 are identified with like reference numerals in the depictions of Figs. 3 to 7 .
  • Principal components of the pump system 30 include a motor 32, a pump 34, and a single shaft 36.
  • the single shaft 36 extends from the motor 32 into the pump 34, and the single shaft 36 extending from the motor into the pump is configured to to operate simultaneously as both a motor output shaft and a pump input shaft.
  • the pump system 30 further includes a mounting accessory 50 configured to support the motor 32 and pump 34.
  • the use of a single shaft 36 extending from the electric motor 32 allows for an integrated design and assembly configuration. With such configuration, the mounting accessory 50 is attached to the motor 32 over the shaft 36, and the shaft 36 protrudes outward from the motor and allows for the pump 34 to be attached to the shaft 36.
  • the pump 34 is then bolted to the motor 32 through the mounting accessory 50 to allow for simplified construction, assembly, and alignment.
  • the pump system 30 further includes a motor housing 40 that houses the motor 32.
  • the motor may include any suitable connection features that may extend through the motor housing, so as to electrically connect the motor to any suitable drive controller as referenced above.
  • the shaft 36 has a first end 42 and a second end 44.
  • the first end 42 of the shaft 36 is received within the motor 32 such that the motor 32 interacts with the shaft 36 to drive the shaft 36.
  • the interaction may be provided by splined, keyed, or bolt elements integrally formed in the first end 42 of the shaft 36, which interact with analogous opposing elements of the motor portion that receives the shaft 36.
  • the shaft 36 extends outward from the motor 32 and through the motor housing 40 into the pump 34.
  • the pump system 30 further includes a pump housing 41 that houses the pump 34.
  • the pump housing may include any suitable fluid porting for receiving and pumping a working fluid, such as hydraulic fluid, to and from the pump for the driving or operation of any suitable external device.
  • the second end 44 of the shaft 36 is received within the pump 34 such that the second shaft end 44 interacts with the pump 34 to drive the pump 34.
  • the interaction of the shaft with the pump may be provided by splined, keyed, or bolt elements integrally formed in the second 44 of the shaft 36, which interact with analogous opposing elements of the pump portion that receives the shaft.
  • the shaft 36 is configured as a single shaft to operate simultaneously as both the motor output shaft and the pump input shaft.
  • Such configuration of a single shaft results in the advantages referenced above, by which the pump system 30 is easier to construct, assemble, and align, and further provides a more compact configuration, as compared to conventional configurations with comparable performance, thereby being suitable for a broader range of applications.
  • the pump system 30 additionally has enhanced mounting features as compared to conventional configurations.
  • the pump system 30 includes a mounting accessory 50.
  • the motor housing and the pump housing may be attached to the mounting accessory 50.
  • the mounting accessory 50 may be configured as an integral bracket that provides for efficient mounting of the motor to the pump, while permitting the single shaft configuration by which the shaft 36 is configured to operate as both the motor output shaft and the pump input shaft.
  • the mounting accessory 50 includes an external mounting plate 52, which is employed to mount the pump system 30 to any suitable external device.
  • the mounting accessory further includes at least one support bracket, such as a plurality support brackets 54, that extend from the external mounting plate 52.
  • the support brackets 54 may be triangularly shaped and extend generally perpendicularly from the external mounting plate 52.
  • the at least one support bracket supports a central mounting plate 56 that is employed for mounting the motor to the pump as further described below.
  • the central mounting plate 56 extends at least over the shaft 36 to permit the shaft to extend fully from the motor into the pump, and permitting free rotation of the shaft 36 relative to the mounting accessory 50.
  • the central mounting plate 56 may include a circular bore that extends fully around the shaft 36 through which the shaft 36 extends.
  • the motor 32 and pump 34 may be mounted to each other via the mounting accessory 50 as follows.
  • the motor housing 40 may include a motor mounting plate 60
  • the pump housing 41 may include a pump mounting plate 61.
  • the motor may be mounted to the mounting accessory 50 by attaching the motor mounting plate 60 to a first side of the central mounting plate 56.
  • the pump may be mounted to the mounting accessory 50 by attaching the pump mounting plate 61 to a second side of the central mounting plate 56 opposite to the first side.
  • the mounting plates may be mounted to each other by any suitable fastening elements 62, such as bolts, screws, or other suitable fastening elements.
  • the mounting accessory 50 is configured as an integral mounting bracket that provides for efficient mounting of the motor to the pump. relative to the mounting accessory 50.
  • the central mounting plate 56 may include a circular bore that extends fully around the shaft 36 through which the shaft 36 extends.
  • the motor 32 and pump 34 may be mounted to each other via the mounting accessory 50 as follows.
  • the motor housing 40 may include a motor mounting plate 60
  • the pump housing 41 may include a pump mounting plate 61.
  • the motor may be mounted to the mounting accessory 50 by attaching the motor mounting plate 60 to a first side of the central mounting plate 56.
  • the pump may be mounted to the mounting accessory 50 by attaching the pump mounting plate 61 to a second side of the central mounting plate 56 opposite to the first side.
  • the mounting plates may be mounted to each other by any suitable fastening elements 62, such as bolts, screws, or other suitable fastening elements.
  • the mounting accessory 50 is configured as an integral mounting bracket that provides for efficient mounting of the motor to the pump.
  • the pump system includes a motor, a pump, and a shaft extending from the motor into the pump, the shaft being configured to operate as a motor output shaft and a pump input shaft.
  • the pump system may include one or more of the following features, either individually or in combination.
  • the pump system includes a mounting accessory configured to support the motor and the pump.
  • the mounting accessory is attached to the motor over the shaft and the shaft protrudes outward from the motor.
  • the mounting accessory includes an external mounting plate, at least one support bracket that extends from the external mounting plate, and a central mounting plate that is supported by the at least one support bracket.
  • the at least one support bracket comprises a plurality of support brackets that are triangularly shaped and extend perpendicularly from the external mounting plate.
  • the pump system further includes a motor housing that houses the motor, and a pump housing that houses the pump, wherein the motor housing and the pump housing are attached to the mounting accessory.
  • the pump system further includes a motor housing that houses the motor, and a pump housing that houses the pump.
  • the motor housing has a motor mounting plate that is attached to a first side of the central plate of the mounting accessory, and the pump housing has a pump mounting plate that is attached to a second side of the central plate of the mounting accessory opposite the first side.
  • a first end of the shaft interacts with the motor, and a second end of the shaft interacts with the pump, to configure the shaft to operate as the motor output shaft and the pump input shaft.
  • the motor is an electric motor.
  • the electric motor is one of an induction, permanent magnet, or switched reluctance electric motor type.
  • the electric motor is an alternating current (AC) motor.
  • the electric motor is a direct current (DC) motor.
  • the pump is a hydraulic pump.
  • the hydraulic pump is one of a vane, external gear, internal gear, bent axis piston, or axial piston pump/motor type hydraulic pump.
  • the hydraulic pump is a variable displacement type pump.
  • the hydraulic pump is a fixed displacement type pump.
  • the pump system further includes a drive controller configured to generate commands for controlling the motor.
  • the drive controller is configured to continuously record target values for a volume flow and/or pressure of a machine control system and compares the target values to actual values of the machine control system.
  • a drive speed of the motor is regulated so that the pump provides an amount of a working fluid required to achieve the target values.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Details And Applications Of Rotary Liquid Pumps (AREA)
  • Rotary Pumps (AREA)
  • Details Of Reciprocating Pumps (AREA)
  • Connection Of Motors, Electrical Generators, Mechanical Devices, And The Like (AREA)
EP15729006.5A 2014-05-30 2015-05-29 Integrated displacement controlled pump Active EP3149330B1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US201462004931P 2014-05-30 2014-05-30
PCT/US2015/033150 WO2015184243A1 (en) 2014-05-30 2015-05-29 Integrated displacement controlled pump

Publications (2)

Publication Number Publication Date
EP3149330A1 EP3149330A1 (en) 2017-04-05
EP3149330B1 true EP3149330B1 (en) 2018-10-17

Family

ID=53396595

Family Applications (1)

Application Number Title Priority Date Filing Date
EP15729006.5A Active EP3149330B1 (en) 2014-05-30 2015-05-29 Integrated displacement controlled pump

Country Status (7)

Country Link
US (1) US20170184092A1 (zh)
EP (1) EP3149330B1 (zh)
KR (1) KR20170013230A (zh)
CN (1) CN106460813B (zh)
DK (1) DK3149330T3 (zh)
ES (1) ES2695403T3 (zh)
WO (1) WO2015184243A1 (zh)

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US11181126B2 (en) 2018-02-06 2021-11-23 Kar-Tech, Inc. Systems and methods for operating a direct current hydraulic pump
US11858787B2 (en) 2018-02-06 2024-01-02 Kar-Tech, Inc. Systems and methods for operating a direct current hydraulic pump
DE102018217927A1 (de) * 2018-10-19 2020-04-23 Robert Bosch Gmbh Hydraulikaggregat
SE544986C2 (en) * 2019-04-05 2023-02-21 Epiroc Rock Drills Ab Method and system for controlling operation of a hydraulic system of a drilling rig
SE543709C2 (en) * 2019-04-17 2021-06-22 Pandrol Ab Mobile energy supply unit for hand-held hydraulic tools and method for operating a hand-held hydraulic tool
CN116241426B (zh) * 2022-09-08 2023-10-13 南京卓益控制技术有限公司 液压系统的油压电控机构及变量泵

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KR20170013230A (ko) 2017-02-06
DK3149330T3 (en) 2019-01-28
ES2695403T3 (es) 2019-01-04
US20170184092A1 (en) 2017-06-29
WO2015184243A1 (en) 2015-12-03
CN106460813B (zh) 2020-05-19
CN106460813A (zh) 2017-02-22
EP3149330A1 (en) 2017-04-05

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