EP2603704A1 - Dispositif de commande pour un premier et un deuxième outil de travail - Google Patents

Dispositif de commande pour un premier et un deuxième outil de travail

Info

Publication number
EP2603704A1
EP2603704A1 EP11746472.7A EP11746472A EP2603704A1 EP 2603704 A1 EP2603704 A1 EP 2603704A1 EP 11746472 A EP11746472 A EP 11746472A EP 2603704 A1 EP2603704 A1 EP 2603704A1
Authority
EP
European Patent Office
Prior art keywords
control
control device
control valve
pressure
valve
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.)
Granted
Application number
EP11746472.7A
Other languages
German (de)
English (en)
Other versions
EP2603704B1 (fr
Inventor
Wolfgang Bertleff
Carsten Sauerbier
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.)
Lukas Hydraulik GmbH
Original Assignee
Lukas Hydraulik GmbH
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 Lukas Hydraulik GmbH filed Critical Lukas Hydraulik GmbH
Publication of EP2603704A1 publication Critical patent/EP2603704A1/fr
Application granted granted Critical
Publication of EP2603704B1 publication Critical patent/EP2603704B1/fr
Active legal-status Critical Current
Anticipated expiration legal-status Critical

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
    • 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
    • F15B11/17—Servomotor systems without provision for follow-up action; Circuits therefor with two or more servomotors using two or more pumps
    • 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
    • F15B2211/265—Control of multiple pressure sources
    • F15B2211/2654—Control of multiple pressure sources one or more pressure sources having priority
    • 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
    • F15B2211/705—Output members, e.g. hydraulic motors or cylinders or control therefor characterised by the type of output members or actuators
    • F15B2211/7051—Linear output members
    • F15B2211/7053—Double-acting 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
    • F15B2211/70—Output members, e.g. hydraulic motors or cylinders or control therefor
    • F15B2211/78—Control of multiple output members
    • F15B2211/781—Control of multiple output members one or more output members having priority

Definitions

  • Control device for first and second implement
  • the present invention relates to a control device or regulating device according to the preamble of claim 1.
  • Such controllers are used, for example, to operate multiple implements in parallel such as e.g. a rescue scissors and a suitsspreizers used.
  • the operator actuates the control device in accordance with the requirements of further operators who operate the respective working devices connected to the control device.
  • a person of the rescue team operate the control device, whereas another person of the rescue team by means of a rescue scissors directly on the accident wagon z.
  • the roof suspension of the accident vehicle is severed and another person of the rescue team tries by means of a rescue spreader to create more space within the accident vehicle to rescue, for example, a trapped occupant.
  • Good operability of the control device is of particular importance for such operations.
  • a control device according to the preamble of claim 1 is known from EP 1 084 349 B1.
  • the control device comprises for selectively operating two implements with increased energy use two separate arranged in a common valve block control valves, which are each operated by the operator by hand.
  • the two control valves are connected via a common connecting channel, which is also located in the valve block.
  • This known control device therefore has a complex structural design. The operability is not optimal for the following reasons.
  • Each control valve includes three switch positions. This results in a total of nine different switch positions of the two control valves so their control levers to each other. In practice, this results in the operator having to move the control levers of both control valves in the required manner.
  • EP 1 286 058 B1 shows a hydraulic system for injection molding machines in which the output-side pressure of at least two variable displacement pumps can be switched on individually or in groups by at least one consumer. However, at least two valves must be actuated here.
  • the object of the present invention is to provide a generic S- teuer adopted available, which offers a higher level of ease of use in a simplified structure.
  • each pressure line communicates with a separate, associated device for generating pressure in combination.
  • the control valve for manual actuation has a control element, for example in the form of a selector lever or the like.
  • control valve could also be driven electrically, for example via an electric motor.
  • the return of the pressure medium of the respective supply circuit to the tank takes place, bypassing the control valve.
  • a throttle-free return is possible in contrast to a return through the control valve.
  • the control valve can be produced easier and therefore cheaper.
  • the entire delivery rate can be selectively switched either on the first or on the second implement. Accordingly, the delivery rates of the two pressure lines can be selectively switched either the work equipment independently or completely on one of the implements preferred.
  • connection of the delivery rate depending on the position of the control valve can be controllably designed in the manner of a proportional valve.
  • this embodiment is well feasible in view of the simple structure of the control device according to the invention.
  • control valve has no bypass or Drucklos- switch position, in which the pressure generated in the pressure generating means is fed back into the tank, so that no pressure is applied to the implement.
  • couplings with so-called bypass function are positioned between the control valve and the respective working device. These are coaxial coupling systems which, in the decoupled state in the region of the coupling connection, directly connect the pressure side of the hose to the discharge side. In this way, a simple pressure release is achieved in each supply circuit.
  • the respective supply circuit may be provided with an associated discharge valve. This drain valve ensures additional pressure reduction.
  • control valve is in a transportable, i. accommodated mobile valve block, which can be, for example, when needed on the back of a truck or the like.
  • the valve block is portable, so that the possibility exists, the control device according to the invention also in remote or hard to reach places, such. B. directly on or in collapsed buildings, in accident wagons, etc., so that the operators can communicate well.
  • the construction according to the invention makes it possible, due to the constructive simplicity and use of only a single control valve, to interconnect a plurality of such control valves to ensure the control device, whereby the number of working devices based on the number of control valves can be increased. It is also possible to design the control valve according to the present invention such that more than two working devices, for example three working devices, can be actuated via the control valve. In this case, it is expedient to likewise provide a corresponding number of pressure-generating devices. To improve the handling, the couplings can be integrated with the valve block.
  • the valve block may suitably be connected via hose connections or pipe connections with the respective pressure generating device in connection and be connected to the work equipment accordingly.
  • the respective pressure generating device may be an integral part of the valve block.
  • 1 shows a first embodiment of a circuit diagram of an overall unit using the control device according to the invention
  • 2 shows a further embodiment of a circuit diagram of an overall unit using the control device according to the invention
  • FIG. 3 shows a still further embodiment of a circuit diagram of an overall unit using the control device according to the invention.
  • Fig. 4 is an illustration of the first switching position (Fig. 4A) and
  • Fig. 5 is an illustration of a circuit diagram with cascaded arrangement of a plurality of control valves and Fig. 6 is an illustration of the control valve for controlling a first, second and third working device.
  • the reference numerals 1 and 2 in Fig. 1 denote a first and second working device, for example, a rescue scissors and a Retrungsspreizer.
  • the first implement 1 is supplied via a first supply circuit 3, the second implement 2 via a second supply circuit 4 respectively with pressure medium, eg hydraulic oil.
  • a first on-control valve 18 and second control valve 19 via a pressure line and discharge line to the respective implement 1, 2 is connected.
  • the control valve 18, 19 serves to interrupt the pressure supply to the implement 1, 2 if necessary or to switch the direction of the pressure supply. If necessary, the control valves 18, 19 can be accommodated in an associated valve block 31 or 32, as shown in FIG.
  • the pressure is generated via a first device 5 and second pressure generating device 6 (eg hydraulic pump), which are in each case connected to a common tank 9 or, if required, separate tanks and to the control valve 7.
  • the device 5 or 6 is connected to the control valve 7 via a first pressure line 20 and second pressure line 21.
  • the first pressure line 20 and the second pressure line 21 have at their end the control valve 7, which in the embodiment shown in FIG. 1 has only three switch positions selectable by an operator via an operating element 8.
  • the respective switching position is preferably held in the selected switching position via releasable locking means.
  • the switching positions of the control valve 7 are (see also Fig. 4A and 4B) as follows: (a) the delivery rate of the first pressure generating device 5 is exclusively the first working device 1 and the delivery rate of the second pressure generating device 6 is exclusively available to the second working device 2 (FIG. 1),
  • the control valve 7 is part of the valve block 28.
  • the control valve 7 comprises 2 switching positions in each addition position of the flow rate of the first and second pressure generating means and a further switching position in which the flow rate of the associated pressure generating device is assigned exclusively to the associated working device (middle position of the control valve 7 in FIG Fig. 1).
  • return lines 12, 13 are provided to the tank 9, which do not extend beyond the control valve 7 but handle this.
  • a coupling unit 29 comprising a plurality of clutches 14, 16 is integrated openly into the valve block 28 at the top.
  • the first and second supply circuit 2, 3 each comprise a first and second clutch 14 and 16, respectively, which is equipped in the embodiment shown in Fig. 1 with a bypass function 15 and 17 in the decoupling state.
  • the control valves 18, 19 shown in FIG. 1 are expediently likewise each in a corresponding one valve block 31, 32.
  • the respective valve block 31, 32 is located in the immediate vicinity of the implement 1 or 2.
  • the control valves 18, 19 are used for - or switching off the conveying power as well as for reversing the working direction of the respective implement.
  • a first and second discharge valve 22 and 23, respectively, are assigned to the respective device 5 or 6 for generating pressure.
  • Each of the two drain valves 22, 23 is equipped with its own control element 24 and 25.
  • FIG. 2 correspond to the features of the overall assembly of FIG. 1.
  • FIG. 4A shows the control valve 7 of the circuit arrangement according to FIG. 1 in the first switching position (left switch position), in which the delivery rate of the first pressure generating device 5 and the delivery rate of the second pressure generating device 6 are directly controlled by the single control valve 7 are connected to the first supply circuit 3, so that when the clutch 14 and inactive Bypassfiintation 15, the sum of the two flow rates are assigned to the first implement 1.
  • the switching position is held by a latching mechanism or by a control line 26 in position.
  • the clutch 16 on the implement 2 can remain in the bypass when the flow rate is switched to implement 1. The reverse also applies.
  • FIG. 4B shows the control valve 7 of the circuit arrangement according to FIG. 1 in the third switching position (right-hand switching position), in which the delivery rate of the first pressure-generating device 5 and the delivery rate of the second pressure-generating device 6 are directly dependent on the shift position Control valve 7 are connected together to the second supply circuit, so that when the clutch 16 and inactive bypass function 17, the sum of the two flow rates are assigned to the second implement 2.
  • the switching position is held by a latching mechanism or by a control line 27 in position.
  • FIGS. 4A and 4B the switching function of the clutch 14, 16 is still shown with active bypass function 15, 17, ie in the disconnected state of the clutch 14, 16.
  • the circuit features of FIGS. 4A and 4B correspond to those of FIG. 1, in which the middle (second) switching position of the control valve 7 is reproduced. In the latter switching position, the respective delivery rate of the respective device 5 or 6 for pressure generation is assigned exclusively to the associated implement 1 or 2, so that both implements 1, 2 each have the full output of the respective device 5 or 6 for pressure generation alone ,
  • a control valve with a proportional characteristic can also be used.
  • a control of the distribution of the delivery rate to the one or the other implement in dependence on the position of the control valve are made.
  • FIG. 5 shows an arrangement of a plurality of control valves 7 in a type of cascade 30, wherein the pressure medium via two parallel control valves on the one hand the (not shown) work equipment is fed directly, on the other hand via an additional control valve again two more (also not shown ) Work tools can be controlled.
  • cascades 30 can be defined in many ways.
  • the present invention also makes it possible, by means of the control valve 7, not only a first and second implement 1 and 2, but also a plurality of implements, e.g. to control three, as can be seen by the apparent from FIG. 6 modified control valve 7.
  • This control valve includes z. For example, a total of three line strands.
  • FIGS. 1-6 It is expressly pointed out that the combination of individual features and partial features of the embodiments illustrated in FIGS. 1-6 are also considered to be essential to the invention.

Landscapes

  • Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Fluid Mechanics (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Fluid-Pressure Circuits (AREA)

Abstract

La présente invention concerne un dispositif de commande pour un premier ainsi qu'un deuxième outil de travail (1, 2) actionné avec un fluide hydraulique, en particulier de l'huile hydraulique, ledit dispositif de commande comprenant un premier circuit d'alimentation (3) pour le premier outil de travail (1) ainsi qu'un deuxième circuit d'alimentation (4) pour le deuxième outil de travail (2) et étant relié ou pouvant au moins être relié à une première conduite forcée (20) ainsi qu'à une deuxième conduite forcée (21) d'un dispositif de commande à actionner en particulier manuellement, au moyen duquel le débit au niveau du premier outil de travail (1) ainsi que du deuxième outil de travail (2) peut être modifié. L'invention a pour objet l'amélioration de la manœuvrabilité ainsi qu'une construction simplifiée. A cet effet, un nouveau dispositif de commande est caractérisé en ce qu'il comprend comme organe de commande une soupape de commande (7) commune au premier et au deuxième circuit d'alimentation (3, 4). Ladite soupape de commande (7) présente trois positions de commutation, à savoir: (a) le débit de la première conduite forcée (20) est fourni exclusivement au premier outil de travail (1) et le débit de la deuxième conduite forcée (21) est fourni exclusivement au deuxième outil de travail (2), (b) le débit de la première et de la deuxième conduite forcée (20, 21) est fourni de préférence au premier outil de travail (1), (c) le débit de la première et de la deuxième conduite forcée (20, 21) est fourni de préférence au deuxième outil de travail (2).
EP11746472.7A 2010-08-12 2011-08-10 Dispositif de commande pour un premier et un deuxième outil de travail Active EP2603704B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102010034187A DE102010034187A1 (de) 2010-08-12 2010-08-12 Steuereinrichtung für erstes und zweites Arbeitsgerät
PCT/EP2011/003997 WO2012019758A1 (fr) 2010-08-12 2011-08-10 Dispositif de commande pour un premier et un deuxième outil de travail

Publications (2)

Publication Number Publication Date
EP2603704A1 true EP2603704A1 (fr) 2013-06-19
EP2603704B1 EP2603704B1 (fr) 2015-11-25

Family

ID=44503720

Family Applications (1)

Application Number Title Priority Date Filing Date
EP11746472.7A Active EP2603704B1 (fr) 2010-08-12 2011-08-10 Dispositif de commande pour un premier et un deuxième outil de travail

Country Status (5)

Country Link
US (1) US20130139498A1 (fr)
EP (1) EP2603704B1 (fr)
CN (1) CN103119306B (fr)
DE (1) DE102010034187A1 (fr)
WO (1) WO2012019758A1 (fr)

Families Citing this family (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103287998B (zh) * 2013-05-31 2016-04-13 武汉船用机械有限责任公司 一种锚绞机泵站控制系统
WO2015060797A1 (fr) * 2013-10-24 2015-04-30 Hidromek Hidrolik Ve Mekanik Makina Imalat A.S. Prévention contre la perte d'énergie et mise en place d'économie de combustible par séparation et orientation d'écoulement dans un circuit hydraulique ouvert possédant de multiples pompes
CN103727294B (zh) * 2014-01-20 2017-01-25 河南华润电力首阳山有限公司 一种控制装置及气压系统
CN104828702B (zh) * 2014-11-26 2017-12-08 北汽福田汽车股份有限公司 起重机、换向控制系统及其供油装置
JP7175332B2 (ja) 2018-06-26 2022-11-18 ルーカス ヒュードラウリク ゲーエムベーハー 携帯用作業工具
DE102019132845A1 (de) * 2019-12-03 2021-06-10 Danfoss Scotland Ltd. Weichenventilbock für eine hydraulisch betätigbare Arbeitsmaschine
DE102020100583A1 (de) * 2020-01-13 2021-07-15 Schwäbische Hüttenwerke Automotive GmbH Fluidversorgungssystem zur Versorgung mehrerer Fluidverbraucher eines Kraftfahrzeugs mit Fluid
CN113819106B (zh) * 2021-10-15 2024-04-19 洛阳普斯特智能机器人有限公司 一种机械自动换向阀及其使用方法

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JPS5561621A (en) * 1978-10-30 1980-05-09 Kobe Steel Ltd Hydraulic circuit of hydraulic shovel
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Also Published As

Publication number Publication date
US20130139498A1 (en) 2013-06-06
EP2603704B1 (fr) 2015-11-25
WO2012019758A8 (fr) 2013-02-28
CN103119306B (zh) 2016-09-21
WO2012019758A1 (fr) 2012-02-16
DE102010034187A1 (de) 2012-02-16
CN103119306A (zh) 2013-05-22

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