WO2011014486A1 - Hydraulic power module - Google Patents

Hydraulic power module Download PDF

Info

Publication number
WO2011014486A1
WO2011014486A1 PCT/US2010/043338 US2010043338W WO2011014486A1 WO 2011014486 A1 WO2011014486 A1 WO 2011014486A1 US 2010043338 W US2010043338 W US 2010043338W WO 2011014486 A1 WO2011014486 A1 WO 2011014486A1
Authority
WO
WIPO (PCT)
Prior art keywords
hydraulic
power module
hpm
servo motor
motor
Prior art date
Application number
PCT/US2010/043338
Other languages
French (fr)
Inventor
Michael J. Sebion
Michael A. Cryer
Todd A. Domer
Nicholas D. Long
Kevin A. Moore
Mark J. Brudevold
William C. Scherer
Original Assignee
Graco Minnesota Inc.
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 Graco Minnesota Inc. filed Critical Graco Minnesota Inc.
Priority to JP2012522954A priority Critical patent/JP5843290B2/en
Priority to US13/386,962 priority patent/US20120121439A1/en
Priority to BR112012001418A priority patent/BR112012001418A2/en
Priority to MX2012001217A priority patent/MX2012001217A/en
Priority to EP10740086A priority patent/EP2459886A1/en
Priority to CN201080033083.4A priority patent/CN102472301B/en
Priority to IN1705DEN2012 priority patent/IN2012DN01705A/en
Priority to AU2010276482A priority patent/AU2010276482B2/en
Priority to RU2012105643/06A priority patent/RU2012105643A/en
Publication of WO2011014486A1 publication Critical patent/WO2011014486A1/en

Links

Classifications

    • 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
    • F15B1/00—Installations or systems with accumulators; Supply reservoir or sump assemblies
    • F15B1/26—Supply reservoir or sump assemblies
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16F—SPRINGS; SHOCK-ABSORBERS; MEANS FOR DAMPING VIBRATION
    • F16F9/00—Springs, vibration-dampers, shock-absorbers, or similarly-constructed movement-dampers using a fluid or the equivalent as damping medium
    • F16F9/32—Details
    • F16F9/50—Special means providing automatic damping adjustment, i.e. self-adjustment of damping by particular sliding movements of a valve element, other than flexions or displacement of valve discs; Special means providing self-adjustment of spring characteristics
    • F16F9/512—Means responsive to load action, i.e. static load on the damper or dynamic fluid pressure changes in the damper, e.g. due to changes in velocity
    • F16F9/5126—Piston, or piston-like valve elements
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
    • F01L—CYCLICALLY OPERATING VALVES FOR MACHINES OR ENGINES
    • F01L1/00—Valve-gear or valve arrangements, e.g. lift-valve gear
    • F01L1/20—Adjusting or compensating clearance
    • F01L1/22—Adjusting or compensating clearance automatically, e.g. mechanically
    • F01L1/24—Adjusting or compensating clearance automatically, e.g. mechanically by fluid means, e.g. hydraulically
    • F01L2001/2444—Details relating to the hydraulic feeding circuit, e.g. lifter oil manifold assembly [LOMA]
    • 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
    • F15B15/18—Combined units comprising both motor and pump

Definitions

  • Hydraulic power modules for controlling fluid dispensing and other apparatus are well known.
  • the hydraulic power module of the instant invention consists of 1) a hydraulic manifold to route hydraulic fluid to the correct areas, 2) a hydraulic reservoir that contains hydraulic fluid, 3) a hydraulic pump, 4) a DC servo motor, 5) a directional valve, 6) a cooling system and 7) an integrated filter housing 8) electronics - motor control for controlling the DC servo motor.
  • the hydraulic power module (HPM) works to supply hydraulic fluid to run a variety of configurations of hydraulic cylinder(s).
  • the DC servo motor is directly coupled to the hydraulic pump via a hydraulic manifold.
  • the pump directs hydraulic fluid through the manifold, to the directional valve.
  • the HPM signals the directional valve to divert flow to either side of a hydraulic cylinder.
  • the HPM in conjunction with a sensor (example: flow meter in the fluid line, a linear transducer associated with the hydraulic cylinder, etc.), provides hydraulic fluid at such a rate to accurately control the velocity of a piston in a hydraulic cylinder. It can also hold the position of the hydraulic cylinder piston stationary against an opposing force. This results in an accurate flow rate or constant dynamic and static pressures.
  • the invention results in a simplified mechanical design compared to traditional AC power pack systems.
  • the dynamic response of the HPM eliminates the need for accumulators.
  • the HPM control allows for full torque output at zero speed. This allows the system to respond almost instantly to requests for flow (no delay while pressure builds.)
  • the dynamic response of the HPM allows for compensation of system variations allowing the hydraulic power module to produce a more constant pressure and/or flow than traditional AC technology.
  • the HPM control allows for changes in pressure and flow without any mechanical adjustment (pressure compensated pumps, dump valves, etc.)
  • the HPM controls the motor torque, speed and position where a typical AC power pack only controls speed resulting in improved control.
  • Noise levels are lower than traditional AC power pack designs.
  • the design and control lend itself to reduced power consumption.
  • the system will only use energy on an as needed basis. Closed loop flow control based on a linear transducer provides equivalent control at a lower cost point.
  • the algorithm will work with any hydraulic pump. When new pressure and/or flow are required, simply replace the pump.
  • Figure 1 shows a front view of the HPM of the instant invention.
  • Figure 2 shows a rear view of the HPM of the instant invention.
  • Figure 3 shows a view with the reservoir removed showing the pump of the HPM of the instant invention.
  • Figure 4 is a schematic view of the HPM of the instant invention.
  • Figure 5 shows a schematic view of the fluid circuit of the HPM of the instant invention.
  • the hydraulic power module 10 of the instant invention consists of 1) a hydraulic manifold 12 to route hydraulic fluid to the correct areas, 2) a hydraulic reservoir 14 that contains hydraulic fluid 16, 3) a hydraulic pump 18, 4) a DC servo motor 20, 5) a directional valve 22, 6) a cooling system 24 7) an integrated filter housing 26 and 8) electronics - motor control 28 for controlling the DC servo motor 20.
  • the hydraulic power module (HPM) 10 works to supply hydraulic fluid 16 to run a variety of configurations of hydraulic cylinder(s) 30.
  • the DC servo motor 20 is directly coupled to the hydraulic pump 18 via a hydraulic manifold 12. When the motor 20 is spinning, the pump 18 directs hydraulic fluid 16 through the manifold 12, to the directional valve 22.
  • the HPM 10 signals the directional valve 22 to divert flow to either side of a hydraulic cylinder 30.
  • the HPM 10 in conjunction with a sensor 32 (example: flow meter in the fluid line, a linear transducer 34 associated with the hydraulic cylinder, etc.), provides hydraulic fluid 16 at such a rate to accurately control the velocity of a piston in a hydraulic cylinder 30.

Landscapes

  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Fluid Mechanics (AREA)
  • Mechanical Engineering (AREA)
  • Fluid-Pressure Circuits (AREA)
  • Auxiliary Drives, Propulsion Controls, And Safety Devices (AREA)
  • Actuator (AREA)

Abstract

The hydraulic power module 10 consists of 1) a hydraulic manifold 12 to route hydraulic fluid to the correct areas, 2) a hydraulic reservoir 14 that contains hydraulic fluid 16, 3) a hydraulic pump 18, 4) a DC servo motor 20, 5) a directional valve 22, 6) a cooling system 24 7) an integrated filter housing 26 and 8) electronics - motor control 28 for controlling the DC servo motor 20.

Description

HYDRAULIC POWERMODULE
TECHNICAL FIELD
This application claims the benefit of US Application serial number 61/229,298, filed July 29. 2009, the contents of which are hereby incorporated by reference.
BACKGROUND ART
Hydraulic power modules for controlling fluid dispensing and other apparatus are well known.
DISCLOSURE OF THE INVENTION
It is an object of this invention to create a hydraulic power module that will drastically improve control, increase mechanical life, use a simplified design, reduce power consumption, reduce cooling requirements and reduce noise levels. The hydraulic power module of the instant invention consists of 1) a hydraulic manifold to route hydraulic fluid to the correct areas, 2) a hydraulic reservoir that contains hydraulic fluid, 3) a hydraulic pump, 4) a DC servo motor, 5) a directional valve, 6) a cooling system and 7) an integrated filter housing 8) electronics - motor control for controlling the DC servo motor. The hydraulic power module (HPM) works to supply hydraulic fluid to run a variety of configurations of hydraulic cylinder(s). The DC servo motor is directly coupled to the hydraulic pump via a hydraulic manifold. When the motor is spinning, the pump directs hydraulic fluid through the manifold, to the directional valve. The HPM signals the directional valve to divert flow to either side of a hydraulic cylinder. The HPM, in conjunction with a sensor (example: flow meter in the fluid line, a linear transducer associated with the hydraulic cylinder, etc.), provides hydraulic fluid at such a rate to accurately control the velocity of a piston in a hydraulic cylinder. It can also hold the position of the hydraulic cylinder piston stationary against an opposing force. This results in an accurate flow rate or constant dynamic and static pressures.
There are a number of advantages to the system of the instant invention such as dramatic increases in control by using a DC servo motor and motor controller. Another result is improved system mechanical life in that when no flow is required, all parts stop moving which can result in less wear. The invention reduces hydraulic cooling requirements by allowing flow to stop when no flow is required.
The invention results in a simplified mechanical design compared to traditional AC power pack systems. The dynamic response of the HPM eliminates the need for accumulators. The HPM control allows for full torque output at zero speed. This allows the system to respond almost instantly to requests for flow (no delay while pressure builds.) The dynamic response of the HPM allows for compensation of system variations allowing the hydraulic power module to produce a more constant pressure and/or flow than traditional AC technology. The HPM control allows for changes in pressure and flow without any mechanical adjustment (pressure compensated pumps, dump valves, etc.) The HPM controls the motor torque, speed and position where a typical AC power pack only controls speed resulting in improved control.
Noise levels are lower than traditional AC power pack designs. The design and control lend itself to reduced power consumption. The system will only use energy on an as needed basis. Closed loop flow control based on a linear transducer provides equivalent control at a lower cost point. The algorithm will work with any hydraulic pump. When new pressure and/or flow are required, simply replace the pump.
These and other objects and advantages of the invention will appear more fully from the following description made in conjunction with the accompanying drawings wherein like reference characters refer to the same or similar parts throughout the several views.
BRIEF DESCRIPTION OF DRAWINGS
Figure 1 shows a front view of the HPM of the instant invention. Figure 2 shows a rear view of the HPM of the instant invention. Figure 3 shows a view with the reservoir removed showing the pump of the HPM of the instant invention. Figure 4 is a schematic view of the HPM of the instant invention.
Figure 5 shows a schematic view of the fluid circuit of the HPM of the instant invention.
BEST MODE FOR CARRYING OUT THE INVENTION
The hydraulic power module 10 of the instant invention consists of 1) a hydraulic manifold 12 to route hydraulic fluid to the correct areas, 2) a hydraulic reservoir 14 that contains hydraulic fluid 16, 3) a hydraulic pump 18, 4) a DC servo motor 20, 5) a directional valve 22, 6) a cooling system 24 7) an integrated filter housing 26 and 8) electronics - motor control 28 for controlling the DC servo motor 20.
The hydraulic power module (HPM) 10 works to supply hydraulic fluid 16 to run a variety of configurations of hydraulic cylinder(s) 30. The DC servo motor 20 is directly coupled to the hydraulic pump 18 via a hydraulic manifold 12. When the motor 20 is spinning, the pump 18 directs hydraulic fluid 16 through the manifold 12, to the directional valve 22. The HPM 10 signals the directional valve 22 to divert flow to either side of a hydraulic cylinder 30. The HPM 10, in conjunction with a sensor 32 (example: flow meter in the fluid line, a linear transducer 34 associated with the hydraulic cylinder, etc.), provides hydraulic fluid 16 at such a rate to accurately control the velocity of a piston in a hydraulic cylinder 30. It can also hold the position of the hydraulic cylinder 30 piston stationary against an opposing force. This results in an accurate flow rate or constant dynamic and static pressures. It is contemplated that various changes and modifications may be made to the hydraulic power module without departing from the spirit and scope of the invention as defined by the following claims.

Claims

1. The hydraulic power module for controlling at least one hydraulic cylinder, said hydraulic cylinder comprising: a hydraulic manifold to route hydraulic fluid; a hydraulic reservoir for containing hydraulic fluid; a hydraulic pump; a DC servo motor; a directional valve; a cooling system; and a motor control for controlling said DC servo motor.
2. The hydraulic power module of claim 1 and further comprising an integrated filter housing.
3. The hydraulic power module of claim 1 wherein motor control is capable of holding pressure under conditions of no flow without rotation of said motor.
PCT/US2010/043338 2009-07-29 2010-07-27 Hydraulic power module WO2011014486A1 (en)

Priority Applications (9)

Application Number Priority Date Filing Date Title
JP2012522954A JP5843290B2 (en) 2009-07-29 2010-07-27 Hydraulic power module
US13/386,962 US20120121439A1 (en) 2009-07-29 2010-07-27 Hydraulic power module
BR112012001418A BR112012001418A2 (en) 2009-07-29 2010-07-27 hydraulic power module to control at least one hydraulic cylinder
MX2012001217A MX2012001217A (en) 2009-07-29 2010-07-27 Hydraulic power module.
EP10740086A EP2459886A1 (en) 2009-07-29 2010-07-27 Hydraulic power module
CN201080033083.4A CN102472301B (en) 2009-07-29 2010-07-27 Hydraulic power pack
IN1705DEN2012 IN2012DN01705A (en) 2009-07-29 2010-07-27
AU2010276482A AU2010276482B2 (en) 2009-07-29 2010-07-27 Hydraulic power module
RU2012105643/06A RU2012105643A (en) 2009-07-29 2010-07-27 HYDRAULIC POWER MODULE

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US22929809P 2009-07-29 2009-07-29
US61/229,298 2009-07-29

Publications (1)

Publication Number Publication Date
WO2011014486A1 true WO2011014486A1 (en) 2011-02-03

Family

ID=42937653

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/US2010/043338 WO2011014486A1 (en) 2009-07-29 2010-07-27 Hydraulic power module

Country Status (11)

Country Link
US (1) US20120121439A1 (en)
EP (1) EP2459886A1 (en)
JP (1) JP5843290B2 (en)
KR (1) KR20120051722A (en)
CN (1) CN102472301B (en)
AU (1) AU2010276482B2 (en)
BR (1) BR112012001418A2 (en)
IN (1) IN2012DN01705A (en)
MX (1) MX2012001217A (en)
RU (1) RU2012105643A (en)
WO (1) WO2011014486A1 (en)

Families Citing this family (6)

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Publication number Priority date Publication date Assignee Title
US9193046B2 (en) * 2012-08-03 2015-11-24 Spx Flow, Inc. Auto cycle pump and method of operation
KR101532683B1 (en) * 2013-10-29 2015-07-01 국방과학연구소 Hydraulic system
CN107000355A (en) * 2014-09-19 2017-08-01 Siti-B&T集团股份公司 The hydraulic system for the forcing press for being used to manufacture ceramic product is particularly for forcing press
CN107725506A (en) * 2017-10-23 2018-02-23 天津世仓工业设备有限公司 A kind of numerical control press electrohydraulic servo-controlling system
DE202019005807U1 (en) 2019-07-30 2022-03-25 Dana Motion Systems Italia S.R.L. Adapter plug for a twist-on filter
EP3771482A1 (en) 2019-07-30 2021-02-03 Dana Motion Systems Italia S.R.L. Adaptor plug for a spin-on filter

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US4043127A (en) * 1975-07-02 1977-08-23 Kubik Philip A Reservoir housing
EP0395420A2 (en) * 1989-04-28 1990-10-31 Parker Hannifin Corporation Electro-hydraulic actuator
US20020026792A1 (en) * 1999-08-19 2002-03-07 Porter Don B. Elongated self-contained actuator
US7047733B1 (en) 2003-02-18 2006-05-23 Giat Industries Compact electro-hydraulic generator to motorize cupola
US20070266848A1 (en) * 2006-05-17 2007-11-22 Findisa S.R.L. Low voltage hydraulic system with electronic control for moving automatic closing apparatuses

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Publication number Priority date Publication date Assignee Title
US3902318A (en) * 1974-08-28 1975-09-02 Sperry Rand Corp Power transmission
US4043127A (en) * 1975-07-02 1977-08-23 Kubik Philip A Reservoir housing
EP0395420A2 (en) * 1989-04-28 1990-10-31 Parker Hannifin Corporation Electro-hydraulic actuator
US20020026792A1 (en) * 1999-08-19 2002-03-07 Porter Don B. Elongated self-contained actuator
US7047733B1 (en) 2003-02-18 2006-05-23 Giat Industries Compact electro-hydraulic generator to motorize cupola
US20070266848A1 (en) * 2006-05-17 2007-11-22 Findisa S.R.L. Low voltage hydraulic system with electronic control for moving automatic closing apparatuses

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Title
See also references of EP2459886A1 *

Also Published As

Publication number Publication date
MX2012001217A (en) 2012-04-30
IN2012DN01705A (en) 2015-06-05
CN102472301A (en) 2012-05-23
CN102472301B (en) 2015-12-16
AU2010276482A1 (en) 2012-02-02
AU2010276482B2 (en) 2015-07-09
US20120121439A1 (en) 2012-05-17
JP5843290B2 (en) 2016-01-13
EP2459886A1 (en) 2012-06-06
RU2012105643A (en) 2013-09-10
JP2013501196A (en) 2013-01-10
KR20120051722A (en) 2012-05-22
BR112012001418A2 (en) 2019-09-24

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