EP0816689B1 - Hydraulische Steuervorrichtung - Google Patents

Hydraulische Steuervorrichtung Download PDF

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Publication number
EP0816689B1
EP0816689B1 EP97110053A EP97110053A EP0816689B1 EP 0816689 B1 EP0816689 B1 EP 0816689B1 EP 97110053 A EP97110053 A EP 97110053A EP 97110053 A EP97110053 A EP 97110053A EP 0816689 B1 EP0816689 B1 EP 0816689B1
Authority
EP
European Patent Office
Prior art keywords
pressure
line
valve
throttle
return
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.)
Expired - Lifetime
Application number
EP97110053A
Other languages
German (de)
English (en)
French (fr)
Other versions
EP0816689A1 (de
Inventor
Rudolf Oberingenieur Brunner
Martin Dipl.-Ing. Univ. Heusser
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.)
Heilmeier and Weinlein Fabrik fuer Oel Hydraulik GmbH and Co KG
Original Assignee
Heilmeier and Weinlein Fabrik fuer Oel Hydraulik GmbH and Co KG
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 Heilmeier and Weinlein Fabrik fuer Oel Hydraulik GmbH and Co KG filed Critical Heilmeier and Weinlein Fabrik fuer Oel Hydraulik GmbH and Co KG
Publication of EP0816689A1 publication Critical patent/EP0816689A1/de
Application granted granted Critical
Publication of EP0816689B1 publication Critical patent/EP0816689B1/de
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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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
    • F15B11/00—Servomotor systems without provision for follow-up action; Circuits therefor
    • F15B11/16—Servomotor systems without provision for follow-up action; Circuits therefor with two or more servomotors
    • F15B11/161—Servomotor systems without provision for follow-up action; Circuits therefor with two or more servomotors with sensing of servomotor demand or load
    • F15B11/162—Servomotor systems without provision for follow-up action; Circuits therefor with two or more servomotors with sensing of servomotor demand or load for giving priority to particular servomotors or users
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B66—HOISTING; LIFTING; HAULING
    • B66C—CRANES; LOAD-ENGAGING ELEMENTS OR DEVICES FOR CRANES, CAPSTANS, WINCHES, OR TACKLES
    • B66C13/00—Other constructional features or details
    • B66C13/18—Control systems or devices
    • 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
    • F15B2211/00—Circuits for servomotor systems
    • F15B2211/20—Fluid pressure source, e.g. accumulator or variable axial piston pump
    • F15B2211/205—Systems with pumps
    • F15B2211/2053—Type of pump
    • F15B2211/20538—Type of pump constant capacity
    • 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
    • F15B2211/00—Circuits for servomotor systems
    • F15B2211/30—Directional control
    • F15B2211/305—Directional control characterised by the type of valves
    • F15B2211/30525—Directional control valves, e.g. 4/3-directional control valve
    • F15B2211/3053—In combination with a pressure compensating valve
    • F15B2211/30535—In combination with a pressure compensating valve the pressure compensating valve is arranged between pressure source and directional control valve
    • 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
    • F15B2211/00—Circuits for servomotor systems
    • F15B2211/30—Directional control
    • F15B2211/305—Directional control characterised by the type of valves
    • F15B2211/3056—Assemblies of multiple valves
    • F15B2211/3059—Assemblies of multiple valves having multiple valves for multiple output members
    • F15B2211/30595—Assemblies of multiple valves having multiple valves for multiple output members with additional valves between the groups of valves for multiple output members
    • 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
    • F15B2211/00—Circuits for servomotor systems
    • F15B2211/30—Directional control
    • F15B2211/31—Directional control characterised by the positions of the valve element
    • F15B2211/3105—Neutral or centre positions
    • F15B2211/3111—Neutral or centre positions the pump port being closed in the centre position, e.g. so-called closed centre
    • 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
    • F15B2211/00—Circuits for servomotor systems
    • F15B2211/30—Directional control
    • F15B2211/35—Directional control combined with flow control
    • F15B2211/353—Flow control by regulating means in return line, i.e. meter-out control
    • 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
    • F15B2211/00—Circuits for servomotor systems
    • F15B2211/40—Flow control
    • F15B2211/405—Flow control characterised by the type of flow control means or valve
    • F15B2211/40507—Flow control characterised by the type of flow control means or valve with constant throttles or orifices
    • 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
    • F15B2211/00—Circuits for servomotor systems
    • F15B2211/40—Flow control
    • F15B2211/405—Flow control characterised by the type of flow control means or valve
    • F15B2211/40515—Flow control characterised by the type of flow control means or valve with variable throttles or orifices
    • 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
    • F15B2211/00—Circuits for servomotor systems
    • F15B2211/40—Flow control
    • F15B2211/42—Flow control characterised by the type of actuation
    • F15B2211/426—Flow control characterised by the type of actuation electrically or electronically
    • 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
    • F15B2211/00—Circuits for servomotor systems
    • F15B2211/40—Flow control
    • F15B2211/45—Control of bleed-off flow, e.g. control of bypass flow to the return line
    • 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
    • F15B2211/00—Circuits for servomotor systems
    • F15B2211/40—Flow control
    • F15B2211/47—Flow control in one direction only
    • F15B2211/473—Flow control in one direction only without restriction in the reverse direction
    • 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
    • F15B2211/00—Circuits for servomotor systems
    • F15B2211/60—Circuit components or control therefor
    • F15B2211/605—Load sensing circuits
    • F15B2211/6051—Load sensing circuits having valve means between output member and the load sensing circuit
    • F15B2211/6054—Load sensing circuits having valve means between output member and the load sensing circuit using shuttle valves
    • 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
    • F15B2211/00—Circuits for servomotor systems
    • F15B2211/60—Circuit components or control therefor
    • F15B2211/605—Load sensing circuits
    • F15B2211/6051—Load sensing circuits having valve means between output member and the load sensing circuit
    • F15B2211/6055—Load sensing circuits having valve means between output member and the load sensing circuit using pressure relief valves
    • 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
    • F15B2211/00—Circuits for servomotor systems
    • F15B2211/70—Output members, e.g. hydraulic motors or cylinders or control therefor
    • F15B2211/71—Multiple output members, e.g. multiple hydraulic motors or cylinders
    • F15B2211/7142—Multiple output members, e.g. multiple hydraulic motors or cylinders the output members being arranged in multiple groups

Definitions

  • the invention relates to a hydraulic control device according to the preamble of Claim 1.
  • the inflow regulator is additionally attached valve components acting on each proportional directional control valve, which is the normal control cycle of the inlet controller in certain operating conditions change. This either avoids an excessive quantity requirement a directional control valve that stops the largest load moving consumer in an uncontrolled manner, or achieves the speed of a consumer in favor of speed of another consumer who needs priority at this point in time being affected.
  • These additional components are automatically influenced in Dependence on changes in the pressure difference between the supply pressure and the highest load pressure.
  • the invention has for its object a hydraulic control device of the beginning to create the kind that is structurally simple at times Increased load torque for a hoist and an extended one for the hoist Area of application.
  • the speed is at uniformly reduced to all consumers whose proportional directional control valves downstream of the throttle.
  • the amount limitation given when the throttle is engaged adapt exactly to the respective application.
  • the switching valve brings the quantity-limiting in its blocking position Throttle to the effect.
  • the check valve ensures that when engaged the throttle isolates the pressure relief valve and the maximum provided Pressure is usable. If the switching valve is switched to the through position, then the throttle is bypassed and the pressure medium takes the path via the line loop, where the maximum quantity controlled by the three-way controller is the maximum Allows consumer speed. Every consumer will find out about his Inlet controller allocated the required amount regardless of the load, which depends on the Adjustment of the proportional directional control valve.
  • the inlet regulator maintains the pressure difference Constant regardless of load via the proportional directional control valve.
  • the pressure relief valve however limits the pressure that can then be used. and therefore the size the liftable loads.
  • Manufacturing and assembly technology is the intermediate plate downstream according to claim 4 of the housing or housings installed in the battery arrangement, its or its consumers there is no need to limit movement speed or pressure.
  • the switching valve with which the throttle in the pump line can be bypassed, is expediently actuated magnetically, on the control side during operation the control device.
  • the switching valve it is also possible for the switching valve to be dependent on the load pressure to adjust.
  • FIG. 1 shows a block diagram of a hydraulic control device S for Hoist like a mobile crane, with which, for example, even in special application situations a lifting cage is manipulated.
  • the control device S has individual, block-shaped housings 1, 3 and at least one Intermediate plate 2, which is combined in a battery assembly 4 (control block) are.
  • the housings 1 are proportional directional control valves P1, P2, P3 with their inlet regulators Z and other components.
  • the housings 1, 3 and the intermediate plates 2 are screwed together on their connection sides, so that all consumers V, e.g. Hydraulic motors or hydraulic cylinders, to a common pump line P are connected.
  • a common one runs in the battery arrangement 4 Return line R to a tank 6.
  • the pressure supply takes place, for example via a pump 5, e.g. a constant pump.
  • Each proportional directional control valve P1, P2, P3 is connected to the pump line via a connection line 7 containing the inlet regulator Z. P connected. Return connecting lines 8 lead from the return line R. to the proportional directional control valves P1, P2, P3.
  • Each consumer V is over two (or only one) working lines A, B to the associated proportional directional control valve P1, P2, P3 connected and used for moving, e.g. Lifting a load L.
  • the inlet regulator Z is a two-way regulator, which works like a pressure compensator in the closing direction via a control line 9 with the pending at the proportional directional control valve P1 Pressure and in the opening direction via a control line 10 with that from one of the working lines A, B derived load pressure and acted upon by a control spring 11 becomes.
  • the control line 10 is via a control line branch 12 and a shuttle valve 13 connected to a common load pressure control line 14 through the housing 1 and the intermediate plate 2 extends into the housing 3. Because of the shuttle valves 13, the load pressure control line 14 carries the currently highest load pressure.
  • a three-way controller D of conventional design is arranged, one as a pressure compensator Working control piston 15 has the aperture of the passage of a connecting channel 16 monitored between the pump line P and the return line R. and depending on its current position, more or less or none at all Drain the pressure medium from the pump line P into the return line R.
  • the control piston 15 is in the opening direction of the three-way controller (to reduce the pressure in the Pump line P) is acted upon by the pressure in the pump line via a control line 17 (Opening side of the three-way controller).
  • the control piston 15 On the closing side and in the closing direction of the three-way controller, on the other hand, the control piston 15 is controlled by a control spring 18 and pressurized in a control line 19 via a damping system C is connected to the load pressure control line 14.
  • a damping throttle 20 is contained, which by means of two opposing Check valves 21 and 23 can be bypassed in each flow direction. Between the damping throttle 20 and the nearest shuttle valve 13 in the Load pressure control line 14, an aperture 24 is provided. That in the opening direction of the Three-way regulator D (reducing the pressure in the pump line P) opening a check valve 21 is biased with a spring 22 in the closing direction and that higher than that other check valve 23, which may not be biased at all.
  • a quantity-limiting throttle 25 is located in the intermediate plate 2 in the pump line P. arranged, the passage cross section is expediently adjustable.
  • the throttle 25 is bypassed in the pump line P by a line loop 26 in which a Switching valve 27, e.g. a 2/2-way solenoid valve is included, which by means of a Switching magnet 28 between that shown in Fig.1 and held by a spring Locking position and a passage position a is adjustable, in which the throttle 25 bypassed becomes.
  • the switching valve 27 is in the embodiment shown with a check valve equipped, that in the direction of flow to the proportional directional control valves P2, P3 blocks.
  • the proportional directional control valve P1 is located in the housing 1 e.g. upstream of the intermediate plate 2 and is through the throttle 25 or the switching valve 27 not affected.
  • a pressure limiting device is also provided, the one Bypass line 29 between the line loop 26 and the return line R and an expediently adjustable pressure relief valve 30 arranged therein contains. Furthermore, in the line loop 26 between the pump line P and the Switch valve 27 on the side facing away from the three-way controller D, a check valve 31 arranged, which blocks in the flow direction to the pressure relief valve 30.
  • the proportional directional control valve receives P1 the according to the load pressure in the control line 19 from Three-way controller D assigned volume flow, possibly with the maximum pressure.
  • the speed of movement of the one controlled with the proportional directional control valve P1 Consumer depends on the deflection of the proportional directional control valve P1.
  • the movement speed is maintained independently of the load by the inflow controller Z.
  • the proportional directional control valves P2 and P3, on the other hand, have a reduced volume Volume flow through the throttle 25, the reduced amount after the Setting the throttle 25 is aimed.
  • the proportional directional control valves P2, P3 is however the maximum pressure can also be used, since the pressure relief valve 30 through the check valve 31 is prevented from responding.
  • the speed of movement the consumer, which is controlled by means of the proportional directional control valve P2, P3, is no longer just from the deflection of the respective proportional directional control valve P2 or P3 depending, but is limited by the throttle 25. With consumers can therefore also handle large loads (the maximum pressure can be used) via the Load torque limit to be taken into account at maximum speed, however be moved slowly without endangering the safety of the system or the hoist.
  • the throttle 25 is bypassed and also stands for the proportional directional control valves P2 and P3 the maximum Volume flow available.
  • the pressure relief valve 30 limits the usable pressure, so that, for example, a greater load than that for the maximum Movement speed of the consumer V would be permissible, not to be lifted at all can.
  • intermediate plates 2 each with one To provide throttle 25 and a switching valve 27.
  • These intermediate plates 2 can be distributed between the housings 1 in order to be individually tailored to individual consumers an even larger battery arrangement than that shown.
  • these Intermediate plates 2 could be differently set chokes 25 or different set pressure relief valves 30 may be provided.
  • the pressure relief valve 30 and the check valve 31 and also the throttle 25 to integrate directly into the switching valve 27 and this more complex switching valve directly to put in the pump line P.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Physics & Mathematics (AREA)
  • Fluid Mechanics (AREA)
  • General Engineering & Computer Science (AREA)
  • Automation & Control Theory (AREA)
  • Fluid-Pressure Circuits (AREA)
  • Valve Device For Special Equipments (AREA)
  • Control And Safety Of Cranes (AREA)
EP97110053A 1996-07-02 1997-06-19 Hydraulische Steuervorrichtung Expired - Lifetime EP0816689B1 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE29611525U 1996-07-02
DE29611525U DE29611525U1 (de) 1996-07-02 1996-07-02 Hydraulische Steuervorrichtung

Publications (2)

Publication Number Publication Date
EP0816689A1 EP0816689A1 (de) 1998-01-07
EP0816689B1 true EP0816689B1 (de) 2000-12-06

Family

ID=8025959

Family Applications (1)

Application Number Title Priority Date Filing Date
EP97110053A Expired - Lifetime EP0816689B1 (de) 1996-07-02 1997-06-19 Hydraulische Steuervorrichtung

Country Status (5)

Country Link
EP (1) EP0816689B1 (es)
AT (1) ATE197984T1 (es)
DE (2) DE29611525U1 (es)
DK (1) DK0816689T3 (es)
ES (1) ES2153623T3 (es)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN111677713B (zh) * 2020-05-19 2022-05-10 徐州徐工随车起重机有限公司 一种直臂随车起重机用合流比例多路换向阀及工作方法

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
SE8803181D0 (sv) 1988-09-09 1988-09-09 Atlas Copco Ab Hydraulic driving system with a priority function for hydraulic motors
DE4243973C1 (de) 1992-12-23 1994-07-07 Heilmeier & Weinlein Hydraulische Steuervorrichtung

Also Published As

Publication number Publication date
DK0816689T3 (da) 2001-01-22
ATE197984T1 (de) 2000-12-15
DE59702707D1 (de) 2001-01-11
DE29611525U1 (de) 1996-09-05
ES2153623T3 (es) 2001-03-01
EP0816689A1 (de) 1998-01-07

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