EP1254319B1 - Dispositif pour economiser l'energie sur des outils de travail a commande hydraulique - Google Patents

Dispositif pour economiser l'energie sur des outils de travail a commande hydraulique Download PDF

Info

Publication number
EP1254319B1
EP1254319B1 EP01900392A EP01900392A EP1254319B1 EP 1254319 B1 EP1254319 B1 EP 1254319B1 EP 01900392 A EP01900392 A EP 01900392A EP 01900392 A EP01900392 A EP 01900392A EP 1254319 B1 EP1254319 B1 EP 1254319B1
Authority
EP
European Patent Office
Prior art keywords
piston
hydraulic
implement
gas
piston accumulator
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
EP01900392A
Other languages
German (de)
English (en)
Other versions
EP1254319A1 (fr
Inventor
Frank Herold
Herbert Baltes
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.)
Hydac Technology GmbH
Original Assignee
Hydac Technology 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 Hydac Technology GmbH filed Critical Hydac Technology GmbH
Publication of EP1254319A1 publication Critical patent/EP1254319A1/fr
Application granted granted Critical
Publication of EP1254319B1 publication Critical patent/EP1254319B1/fr
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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
    • F15B21/00—Common features of fluid actuator systems; Fluid-pressure actuator systems or details thereof, not covered by any other group of this subclass
    • F15B21/14—Energy-recuperation means
    • E—FIXED CONSTRUCTIONS
    • E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
    • E02F—DREDGING; SOIL-SHIFTING
    • E02F9/00—Component parts of dredgers or soil-shifting machines, not restricted to one of the kinds covered by groups E02F3/00 - E02F7/00
    • E02F9/20—Drives; Control devices
    • E02F9/22—Hydraulic or pneumatic drives
    • E02F9/2217—Hydraulic or pneumatic drives with energy recovery arrangements, e.g. using accumulators, flywheels
    • 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
    • F15B1/02—Installations or systems with accumulators
    • F15B1/024—Installations or systems with accumulators used as a supplementary power source, e.g. to store energy in idle periods to balance pump load
    • 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
    • F15B2201/00—Accumulators
    • F15B2201/30—Accumulator separating means
    • F15B2201/32—Accumulator separating means having multiple separating means, e.g. with an auxiliary piston sliding within a main piston, multiple membranes or combinations thereof

Definitions

  • the invention relates to a device for saving energy in hydraulically actuated work equipment with the features of the preamble of claim 1.
  • a generic energy saving and recovery device is known from EP-A-0 897 480 and DE-A-196 17 950.
  • the pistons of the piston accumulator which are positively coupled to one another via the coupling part, result in a decreasing preload space within the piston accumulator in one direction of travel with a simultaneous increase in the internal gas pressure, which decreases in the sense of relaxation as soon as the pistons relax. move in the other direction of travel with an increase in the volume of the prestressing space.
  • the amount of gas enclosed in the prestressing space forms a kind of energy store comparable to a mechanical spring, and the kinetic energy of the working equipment introduced into the store by the movement can be called up again.
  • the use of the known double piston accumulator described above for the energy saving device has shown that it In terms of energy savings, it is particularly favorable to assign a medium piston or boom position of the hydraulically actuated work equipment to a high internal gas pressure in the pretensioning space, which relaxes from this central position while releasing energy, provided that the boom may need to be lifted under load.
  • the energy-saving device mentioned need not be limited to working machines, such as excavators or the like, but may also be used in hydraulic brake systems, in elevators and in hydraulic motors or the like. Find use. In these cases, it is advantageous to provide a large volume for the preload space in order to achieve a low spring constant. To achieve this, it has already been proposed in the known solution to connect the prestressing space to a further gas supply device, in particular in the form of a nitrogen store, as a buffer.
  • the piston accumulator is permanently connected to the work equipment as a central part of the energy saving and recovery device, so that energy is continuously stored in the piston accumulator and retrieved from there, depending on the work movement of the work implement.
  • the pertinent permanently connected energy saving and recovery device has proven to be disadvantageous in certain work situations, although otherwise the efficiency of the energy recovery can be rated as very good.
  • hydraulic accumulators as energy storage elements, which can be activated and deactivated again by means of the control device in the fluid circuit of the implement.
  • the acceleration behavior of the rotary piston engine and the fluid pressure conditions in its working chambers are recorded by means of the monitoring device.
  • the invention is therefore based on the object to further improve the known device in such a way that it is in use when an operation of the working equipment in normal working conditions makes this appear necessary and that special work processes with the work machine which the work equipment is completely relieved or very heavily loaded, is not hindered by the energy saving device.
  • a corresponding object is achieved by a device having the features of claim 1.
  • the control device for the relevant switching operations has a monitoring device which detects at least system states of the working equipment and the piston accumulator and that the monitoring device monitors the end position of the pistons of the piston accumulator for this purpose and the working position of the working equipment, it is possible, depending on the working position of the boom and therefore the work equipment and with regard to special applications, such as shaking or lifting with the boom, to decouple the then unnecessary and possibly even disruptive energy saving and recovery device from the fluid circuit with the work equipment and without this the special one. To carry out work.
  • connection and disconnection processes for the energy saving and recovery device can be carried out manually by an operator of the working machine, but this is preferably done automatically by the monitoring device detecting the system state of the working equipment and the piston accumulator and correspondingly via the fluid control with the control device Controlled piston accumulator as an energy saving and recovery device.
  • the design for the energy saving and the energy recovery can be designed for a predeterminable partial working area of the working machine, which, for example, requires the highest pressure for a working process for the working equipment.
  • the device according to the invention can be designed very small in size and that existing machines can be retrofitted with the energy saving and recovery device in question. The retrofitting can be done regardless of the cylinder size of the working cylinder of the implement. This means that series retrofitting of machines of different sizes is easily possible.
  • the control device has a controllable switching valve which is arranged in the fluid circuit between the piston accumulator and a machine control part as part of the fluid control.
  • a machine control part in question, manual switching on and off of the double piston accumulator is possible in particular if it interferes with special work tasks; For example, for operations that require high pressure on the piston side of the implement. The latter is the case if, as already mentioned, the working machine has to be used to jog the boom or a lifting process for the entire working machine if it has got stuck in the ground, for example.
  • machine control part is connected downstream of the motor-pump unit, which supplies the fluid circuit from the tank with hydraulic fluid
  • different control concepts are possible due to the control devices when using control pumps as hydraulic pumps.
  • an increase in speed can be achieved at the same engine speed, the hydraulic pump not having to regulate the volume flow.
  • machine noise can be achieved with a low engine speed as the drive for the hydraulic pump and the same working speed, which plays an increasingly important role in the constantly increasing noise protection requirements.
  • the monitoring device in question is inexpensive to implement and reliable in operation.
  • the partition of the piston accumulator separates a fluid space from a gas space, a piston in the fluid space dividing the latter into two fluid subspaces and in the gas space the other piston in turn separating them into two gas subspaces.
  • a compact design can then be achieved for the piston accumulator, because only a small amount of fluid has to be taken up to control the working equipment and because the main supply is via the fluid circuit with the machine control part via the drivable hydraulic pump.
  • the gas space mentioned can also be designed smaller because of the smaller pressure work area, which in turn benefits the compact design mentioned.
  • the one gas subspace can be connected to a gas supply device, the other gas subspace being vacuumed or having ambient air. Due to the connectable gas supply facility it is possible to enlarge the preload space in the manner of a buffer, provided that a lower spring constant should prove to be favorable. If the gas sub-area is preferably provided with the ambient air and connected to the tank of the working machine, a tank pressure that may be present in the tank can be introduced into the piston accumulator via the stored ambient air and thus further increase the preload pressure, which in turn benefits the efficiency in energy storage.
  • the device shown in the figure as a circuit diagram is used for energy saving and energy recovery in hydraulically actuated tools, which are designated as a whole by 10.
  • the device also has a piston accumulator 12 which is designed in the manner of a double piston accumulator and has a housing 14. At least two longitudinally movable pistons 16, 18 are arranged in the housing 14. These are with the piston 18, which is located opposite each other or 16 firmly connected to one another via a rod-like coupling part 20.
  • the coupling part 20 itself is guided longitudinally approximately in the middle in a partition 22 of the housing 14.
  • the dividing wall 22 delimits a fluid space 24 and a gas space 26 with essentially the same volumes with the two pistons 16, 18 located opposite one another.
  • the piston 18 on the left as viewed in the direction of the figure delimits with the other housing 14 a partial gas chamber 28 which serves as a preload chamber and which is provided with a predeterminable internal gas pressure which corresponds to the preload pressure.
  • the device furthermore has a fluid control, designated as a whole by 30, which is connected to a fluid supply of the work machine, designated as a whole by 32.
  • a fluid control 30 is connected to a fluid supply of the work machine, designated as a whole by 32.
  • the implement 10 can be controlled via a closed fluid circuit 34 for the respective work process.
  • the fluid control 30 also has a control device 36, by means of which the piston accumulator 12 can be switched on or off in the fluid circuit 34 of the working device 10.
  • the control device 36 has a monitoring device designated 38 as a whole for the switching operations in question, which detects at least the system states of the implement 10 and the piston accumulator 12.
  • the control device 36 has a controllable switching valve 40, in particular in the form of an electrically actuable 2/2-way switching valve, the spring-loaded returns to its starting position shown in the circuit diagram by itself.
  • the mentioned switching valve 40 is arranged in the fluid circuit 34 between the piston accumulator 12 and a machine control part 42 as part of the fluid control 30.
  • the machine control part 42 in turn has inputs for two pressure switches 44, each of which, for example, operated by hand using so-called joysticks (mechanical-hydraulic connection) enable the boom (not shown) of the implement 10 to be raised and lowered manually.
  • the machine control part 42 is connected on the input side to the fluid supply, which in particular has a tank 46 and a motor-hydraulic pump unit 48.
  • the hydraulic pump can be designed as a control pump.
  • the inlet and outlet lines between tank 46 and machine control part 42 are part of the fluid circuit 34.
  • the above-mentioned monitoring device 38 monitors, among other things, the end position of the pistons 16, 18 of the piston accumulator 12 and the respective working position of the implement 10.
  • the latter is provided with limit switches 50 on the end of the housing which provide an electrical switch Issue a signal as soon as the pistons 16 or 18 have reached their respective possible final travel positions.
  • the electrical signal transmission is shown in the basic illustration according to the figure via the electrical lines shown in part.
  • a position measuring system 52 and an angle sensor 54 and a pressure detection device 56 which has a pressure switch which is arranged in the fluid circuit 34 between the outlet side of the switching valve 40 and the inlet side of the implement 10, are used in a secondary branch to monitor the working position of the implement 10.
  • the pressure switches show the direction of movement (up / down) of the memory.
  • the measuring system 52, the angle encoder 54 and the pressure detection device 56 can be used in combination, as shown in the circuit diagram, or can only be used individually, depending on the requirements for the control and its convenience. Ultimately, however, they all give a statement about the state of movement and work for the work tool 10.
  • the fluid space 24 is divided by the piston 16 into two fluid subspaces 24a, b; this also applies to the gas space 26, which is divided into two gas subspaces 26a, b by the other piston 28.
  • the one gas subspace 26a is equal to the prestressing space 28 with a predetermined internal gas pressure.
  • a gas supply device 60 in particular filled with nitrogen, can be connected to the gas subspace 26a or the prestressing space 28 via a valve device 58.
  • the other gas subspace 26b is either vacuum-sealed or, as shown, can be connected via a connection device 62 and thus has ambient air. In an embodiment not shown in detail, it is also possible to connect the gas subspace 26b to the tank 46.
  • the relevant preload pressure can be passed on to the gas subspace 26b.
  • the working equipment 10 has two hydraulic working cylinders 64, which are customary for such working machines.
  • the two working cylinders 64 are connected to one another in a fluid-carrying manner on the rod side 66 as well as on the piston side 68 via corresponding fluid lines.
  • the rod side 66 is in turn connected to the machine control part 42 in a fluid-carrying manner and the piston side 68 is fluid-carrying in connection with the control device 36 with a switching valve 40. Furthermore, the control device 36 is connected in a fluid-carrying manner to the piston accumulator 12 and to the machine control part 42, in particular via the switching valve 40 the two fluid subspaces 24a, 24b. According to the switching diagram, the switching valve 40 is shown in the unactuated state, the fluid flow from the machine control part 42 to the piston accumulator 12 being blocked, but being made to the piston side 68 of the implement 10.
  • the device according to the invention will now be explained in more detail based on its function. If the switching valve 40 is not actuated in its initial state in accordance with the switching diagram shown, the machine control part 42 supplies the piston side 68 of the two working cylinders 64 via the fluid supply 32 and the working device 10 with its boom extends, that is to say it is moved upward as seen in the switching diagram. The displaced fluid from the rod-side fluid spaces of the two working cylinders 64 is then returned, bypassing the switching valve 40, directly to the machine control part 42 and from there into the tank 46 38 detected with their individual sensors and the piston accumulator 12 connected as an energy saving and recovery device in the fluid circuit 34.
  • the switching valve 40 is switched on via the control device 36 in the energetically sensible area and, when viewed in the direction of the switching diagram, assumes its right switching position with crossed fluid paths.
  • the piston pushed out Fluid from the working cylinders 64 is then forwarded via the cross-fluid guide of the switching valve 40 into the fluid subspace 24b and, under the action of the fluid pressure, the piston arrangement 16, 18 moves to the left in the direction of view of the figure and increases the biasing pressure in the biasing space 28 or in the gas subspace 26a with simultaneous increase in volume of the gas subspace 26b.
  • the amount of fluid displaced in the fluid subspace 24a during the movement of the piston 16 from right to left is displaced in the direction of the machine control part 42 and towards the tank 46 via the associated fluid line and the switching valve 40.
  • the piston 18 reaches its limit switch 50 assigned to it, the work involved in taking up the piston accumulator 12 can also be switched off.
  • the fluid quantity of the fluid supply 32 can be brought into the subspace 24a with the switching valve 40 actuated via the machine control part 42 and the prestressed gas volume in the prestressing space 28 or gas subspace 26a relaxes with the result that the energy previously introduced in this way is now called up during the return movement of the piston 16 from left to right and the amount of fluid ejected from the fluid subspace 24b in turn reaches the piston chamber of the delivery cylinder 64 via the switching valve 40 in a crossed switching position and thus supports the lifting process of the implement 10.
  • This Fluid pushed out on the rod side 66 in turn reaches the tank 46 via the assigned fluid line and the machine control part 42.
  • the pushing-out movement movement of the piston arrangement 16, 18 can be carried out, for example, via the assigned limit switch 50 to the piston 16 and then switch off while switching on the control device 36.
  • the embodiment described above can also be modified in such a way that instead of two working cylinders 64, only one working cylinder is used or, if appropriate, more than two.
  • the device described above has also proven to be energetically advantageous if the boom is in a static position or is operated in the end-of-travel range.

Landscapes

  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Fluid Mechanics (AREA)
  • Mechanical Engineering (AREA)
  • Analytical Chemistry (AREA)
  • Chemical & Material Sciences (AREA)
  • Mining & Mineral Resources (AREA)
  • Civil Engineering (AREA)
  • Structural Engineering (AREA)
  • Fluid-Pressure Circuits (AREA)
  • Supply Devices, Intensifiers, Converters, And Telemotors (AREA)
  • Operation Control Of Excavators (AREA)

Claims (9)

  1. Dispositif pour l'économie d'énergie dans des outillages à commande hydraulique (10) avec un accumulateur à pistons (12), avec un carter (14); dans lequel sont disposés au moins deux pistons (16, 18) déplaçables longitudinalement qui sont raccordés l'un à l'autre respectivement avec un piston opposé de manière adjacente (18, 16) par l'intermédiaire d'un élément d'accouplement (20) qui est guidé de manière à se déplacer longitudinalement dans une paroi de séparation (22) du carter (14) qui limite des compartiments avec les deux pistons opposés de manière adjacente (18, 16), moyennant quoi au moins l'un des pistons (18) limite au moins partiellement un compartiment de précontrainte (28) avec une pression intérieure de gaz prédéfinissable et avec une commande de fluide (30) qui est raccordée à une alimentation de fluide (32) et par l'intermédiaire de laquelle les outillages (10) peuvent être commandés par un circuit de fluide (34) pour une opération, moyennant quoi la commande de fluide (30) comporte un dispositif de commande (36) à l'aide duquel l'accumulateur à pistons (12) peut être mis en service ou hors service dans le circuit de fluide (34) des outillages (10), caractérisé en ce que le dispositif de commande (36) comporte un dispositif de surveillance (38) pour les opérations de commutation qui détecte au moins les états du système des outillages (10) et de l'accumulateur à pistons (12) et en ce que le dispositif de surveillance (38) surveille pour cela la position de fin de course des pistons (16, 18) de l'accumulateur à pistons (12) ainsi que la position de travail des outillages (10).
  2. Dispositif selon la revendication 1, caractérisé en ce que le dispositif de commande (36) comporte une soupape de commande amorçable (40) qui est agencée dans le circuit de fluide (34) entre l'accumulateur à pistons (12) et un élément de commande de machine (42) comme élément de la commande de fluide (30).
  3. Dispositif selon la revendication 1 ou 2, caractérisé en ce que, pour la surveillance de la position de fin de course des pistons (16, 18) de l'accumulateur à pistons (12), celui-ci est muni de commutateurs de fin de course (50) et en ce que, pour la surveillance de la position de travail des outillages (10), un système de mesure de position (52) et/ou un système de mesure d'angle (54) et/ou un dispositif de détection de pression est prévu dans le circuit de fluide (34).
  4. Dispositif selon l'une quelconque des revendications 1 à 3, caractérisé en ce que la paroi de séparation (22) de l'accumulateur à pistons (12) sépare un compartiment de fluide (24) d'un compartiment de gaz (26), en ce que, dans le compartiment de fluide (24), un piston (16) divise celui-ci en deux compartiments de fluide partiels (24a,b) et en ce que, dans le compartiment de gaz (26), l'autre piston (18) divise celui-ci en deux compartiments de gaz partiels (26a,b).
  5. Dispositif selon la revendication 4, caractérisé en ce que l'un des compartiments de gaz partiels (26a) est raccordable à un dispositif d'alimentation de gaz (60) et en ce que l'autre compartiment de gaz partiel (26b) est mis sous vide ou comporte de l'air ambiant.
  6. Dispositif selon la revendication 5, caractérisé en ce que le compartiment de gaz partiel (26b) est raccordable à l'air ambiant par un dispositif de raccordement (62) ou est raccordé au réservoir (46) de l'alimentation de fluide (32).
  7. Dispositif selon la revendication 5, caractérisé en ce que les outillages (10) comportent deux vérins hydrauliques (64) qui sont raccordés l'un à l'autre de manière à guider le fluide aussi bien au côté du piston que du côté de la tige et en ce que le côté de la tige (66) est raccordé à l'élément de commande de machine (42) de manière à guider le fluide et le côté du piston (68) est raccordé au dispositif de commande (36) de manière à guider le fluide.
  8. Dispositif selon la revendication 7, caractérisé en ce que le dispositif de commande (36) est, en outre, raccordé, de manière à guider le fluide, à l'accumulateur à pistons (12) et à l'élément de commande de machine (42), en particulier aux deux compartiments de fluide partiels (24a,24b).
  9. Dispositif selon la revendication 2 et le revendication 8, caractérisé en ce que la soupape de commande (40), à l'état non actionné, verrouille le guidage du fluide entre l'élément de commande de machine (42) et l'accumulateur à pistons (12) et établit le guidage du fluide du côté du piston (68) des outillages (10) et, à l'état actionné, établit le guidage du fluide entre l'élément de commande de machine (42) et l'accumulateur à pistons (12) et, à partir de celui-ci, vers le côté du piston (68) des outillages (10).
EP01900392A 2000-02-11 2001-01-08 Dispositif pour economiser l'energie sur des outils de travail a commande hydraulique Expired - Lifetime EP1254319B1 (fr)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
DE10006013A DE10006013A1 (de) 2000-02-11 2000-02-11 Vorrichtung zur Energieeinsparung bei hydraulisch betätigbaren Arbeitsgerätschaften
DE10006013 2000-02-11
PCT/EP2001/000102 WO2001059309A1 (fr) 2000-02-11 2001-01-08 Dispositif pour economiser l'energie sur des outils de travail a commande hydraulique

Publications (2)

Publication Number Publication Date
EP1254319A1 EP1254319A1 (fr) 2002-11-06
EP1254319B1 true EP1254319B1 (fr) 2004-04-28

Family

ID=7630534

Family Applications (1)

Application Number Title Priority Date Filing Date
EP01900392A Expired - Lifetime EP1254319B1 (fr) 2000-02-11 2001-01-08 Dispositif pour economiser l'energie sur des outils de travail a commande hydraulique

Country Status (5)

Country Link
EP (1) EP1254319B1 (fr)
AT (1) ATE265624T1 (fr)
DE (2) DE10006013A1 (fr)
ES (1) ES2219494T3 (fr)
WO (1) WO2001059309A1 (fr)

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103174687A (zh) * 2013-03-25 2013-06-26 王文雯 增压蓄能型节能液压抽油机
DE102012009668B3 (de) * 2012-05-03 2013-08-14 Hydac Technology Gmbh Vorrichtung zur Energieeinsparung bei hydraulisch betätigbaren Arbeitsgerätschaften
DE102012009669B3 (de) * 2012-05-03 2013-08-14 Hydac Technology Gmbh Vorrichtung zur Energieeinsparung bei hydraulisch betätigbaren Arbeitsgerätschaften
WO2013164072A1 (fr) 2012-05-03 2013-11-07 Hydac Technology Gmbh Dispositif pour economiser de l'energie sur des outils de travail à commande hydraulique
CN103958902A (zh) * 2011-10-10 2014-07-30 阿格斯·彼特·罗伯森 蓄压器
RU2558073C1 (ru) * 2014-03-03 2015-07-27 Владимир Никитич Тарасов Энергосберегающее устройство рабочего оборудования стреловой машины
WO2023161173A1 (fr) * 2022-02-24 2023-08-31 Serbay, Timur Dispositif d'actionnement hydraulique pour un outil à actionnement hydraulique

Families Citing this family (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102006002566B4 (de) 2006-01-18 2014-11-13 Eurocopter Deutschland Gmbh Hydraulikanlage
DE102010032415A1 (de) 2010-07-27 2012-02-02 Hydac Technology Gmbh Vorrichtung zur Rückgewinnung von Energie
DE102011120226B4 (de) * 2011-12-03 2013-08-14 Hydac Fluidtechnik Gmbh System zur Verbesserung der Energieeffizienz bei Hydrauliksystemen
FI124684B (fi) * 2012-12-03 2014-12-15 Ponsse Oyj Nosturi
DE102013013690A1 (de) * 2013-08-16 2015-02-19 Hydac Technology Gmbh System zur automatischen Anpassung einer vorgebbaren Gaseintragsmenge und Betätigungseinrichtung mit einem solchen System
CN108436006B (zh) * 2018-03-26 2019-04-12 中科聚信洁能热锻装备研发股份有限公司 一种高效传动的自由锻造液压机
US11662017B2 (en) 2020-06-25 2023-05-30 Deere & Company Systems and methods for pressurizing transmission charge oil

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3206162A1 (de) * 1982-02-20 1983-09-01 Hartmann & Lämmle GmbH & Co KG, 7255 Rutesheim Antrieb fuer eine mittels eines hydromotors bewegbaren masse
JP2628397B2 (ja) * 1990-04-25 1997-07-09 回生工業株式会社 インバータ電源を用いた油圧エレベータの速度制御方法
DE19528558B4 (de) * 1995-08-03 2006-10-05 Dieffenbacher Gmbh + Co. Kg Verfahren zum Betreiben einer hydraulischen Presse und Vorrichtung zur Durchführung des Verfahrens
DE19617950A1 (de) * 1996-05-04 1997-11-13 Hydac Technology Gmbh Kolbenspeicher mit Gasvorspannung
DE69920452T2 (de) * 1998-06-27 2005-11-10 Bruun Ecomate Aktiebolag Mobile arbeitsmaschine

Cited By (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103958902A (zh) * 2011-10-10 2014-07-30 阿格斯·彼特·罗伯森 蓄压器
EP2766611A4 (fr) * 2011-10-10 2015-07-29 Angus Peter Robson Accumulateur
DE102012009668B3 (de) * 2012-05-03 2013-08-14 Hydac Technology Gmbh Vorrichtung zur Energieeinsparung bei hydraulisch betätigbaren Arbeitsgerätschaften
DE102012009669B3 (de) * 2012-05-03 2013-08-14 Hydac Technology Gmbh Vorrichtung zur Energieeinsparung bei hydraulisch betätigbaren Arbeitsgerätschaften
WO2013164096A1 (fr) 2012-05-03 2013-11-07 Hydac Technology Gmbh Dispositif pour économiser l'énergie dans des outils de travail à commande hydraulique
WO2013164073A1 (fr) 2012-05-03 2013-11-07 Hydac Technology Gmbh Dispositif pour economiser de l'energie sur des outils de travail à commande hydraulique
WO2013164072A1 (fr) 2012-05-03 2013-11-07 Hydac Technology Gmbh Dispositif pour economiser de l'energie sur des outils de travail à commande hydraulique
DE102012009670A1 (de) 2012-05-03 2013-11-07 Hydac Technology Gmbh Vorrichtung zur Energieeinsparung bei hydraulisch betätigbaren Arbeitsgerätschaften
CN103174687A (zh) * 2013-03-25 2013-06-26 王文雯 增压蓄能型节能液压抽油机
CN103174687B (zh) * 2013-03-25 2015-06-17 王文雯 增压蓄能型节能液压抽油机
RU2558073C1 (ru) * 2014-03-03 2015-07-27 Владимир Никитич Тарасов Энергосберегающее устройство рабочего оборудования стреловой машины
WO2023161173A1 (fr) * 2022-02-24 2023-08-31 Serbay, Timur Dispositif d'actionnement hydraulique pour un outil à actionnement hydraulique

Also Published As

Publication number Publication date
WO2001059309A1 (fr) 2001-08-16
ATE265624T1 (de) 2004-05-15
ES2219494T3 (es) 2004-12-01
EP1254319A1 (fr) 2002-11-06
DE10006013A1 (de) 2001-08-23
DE50102128D1 (de) 2004-06-03

Similar Documents

Publication Publication Date Title
EP1943179B1 (fr) Installation hydraulique
EP1254319B1 (fr) Dispositif pour economiser l'energie sur des outils de travail a commande hydraulique
EP0615583B1 (fr) Recuperateur d'energie
EP1574626B1 (fr) Système hydraulique de suspension passive
EP3394454B1 (fr) Soupape, en particulier distributeur à tiroir à 4/2 voies
DE102012009668B3 (de) Vorrichtung zur Energieeinsparung bei hydraulisch betätigbaren Arbeitsgerätschaften
EP1003939B1 (fr) Dispositif de commande hydraulique destine a une machine de travail mobile, notamment a une chargeuse a roues
EP3317088B1 (fr) Unité d'entraînement hydroélectrique
EP0789816B1 (fr) Dispositif de recuperation d'energie
DE4416228A1 (de) Hydraulische Anlage für ein mobiles Arbeitsgerät, insbesondere für einen Radlader
DE102012009669B3 (de) Vorrichtung zur Energieeinsparung bei hydraulisch betätigbaren Arbeitsgerätschaften
EP3356683B1 (fr) Actionneur électrohydraulique
WO2023161173A1 (fr) Dispositif d'actionnement hydraulique pour un outil à actionnement hydraulique
EP1564414B1 (fr) Dispositif de commande hydraulique
EP0241816B1 (fr) Entraînement hydraulique pour un appareil de coupure
EP2513491B1 (fr) Systeme de vanne pour commander un consommateur
EP1590572B1 (fr) Dispositif de suspension
WO2013164072A1 (fr) Dispositif pour economiser de l'energie sur des outils de travail à commande hydraulique
EP0668441A1 (fr) Commande d'entraînement pour une pompe à deux cylindres pour liquides épais
EP1432878B1 (fr) Dispositif de commande
EP2825778A1 (fr) Dispositif avec système hydraulique pour commander au moins une première charge hydraulique et au moins une deuxième charge hydraulique
DE102020002960A1 (de) System zum Bremsen eines verdrängergesteuerten Antriebssystems
DE102009021103A1 (de) Hydraulische Ventilvorrichtung
WO2019219491A1 (fr) Soupape

Legal Events

Date Code Title Description
PUAI Public reference made under article 153(3) epc to a published international application that has entered the european phase

Free format text: ORIGINAL CODE: 0009012

17P Request for examination filed

Effective date: 20020611

AK Designated contracting states

Kind code of ref document: A1

Designated state(s): AT BE CH CY DE DK ES FI FR GB GR IE IT LI LU MC NL PT SE TR

17Q First examination report despatched

Effective date: 20030514

GRAP Despatch of communication of intention to grant a patent

Free format text: ORIGINAL CODE: EPIDOSNIGR1

GRAS Grant fee paid

Free format text: ORIGINAL CODE: EPIDOSNIGR3

GRAA (expected) grant

Free format text: ORIGINAL CODE: 0009210

AK Designated contracting states

Kind code of ref document: B1

Designated state(s): AT BE CH CY DE DK ES FI FR GB GR IE IT LI LU MC NL PT SE TR

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: TR

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20040428

Ref country code: NL

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20040428

Ref country code: FI

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20040428

Ref country code: IE

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20040428

REG Reference to a national code

Ref country code: GB

Ref legal event code: FG4D

Free format text: NOT ENGLISH

REG Reference to a national code

Ref country code: CH

Ref legal event code: EP

GBT Gb: translation of ep patent filed (gb section 77(6)(a)/1977)

Effective date: 20040428

REG Reference to a national code

Ref country code: IE

Ref legal event code: FG4D

Free format text: GERMAN

REF Corresponds to:

Ref document number: 50102128

Country of ref document: DE

Date of ref document: 20040603

Kind code of ref document: P

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: GR

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20040728

Ref country code: DK

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20040728

REG Reference to a national code

Ref country code: SE

Ref legal event code: TRGR

NLV1 Nl: lapsed or annulled due to failure to fulfill the requirements of art. 29p and 29m of the patents act
ET Fr: translation filed
REG Reference to a national code

Ref country code: IE

Ref legal event code: FD4D

Ref country code: ES

Ref legal event code: FG2A

Ref document number: 2219494

Country of ref document: ES

Kind code of ref document: T3

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: ES

Payment date: 20041213

Year of fee payment: 5

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: GB

Payment date: 20041216

Year of fee payment: 5

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: LU

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20050108

Ref country code: CY

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20050108

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: CH

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20050131

Ref country code: BE

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20050131

Ref country code: MC

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20050131

Ref country code: LI

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20050131

PLBE No opposition filed within time limit

Free format text: ORIGINAL CODE: 0009261

STAA Information on the status of an ep patent application or granted ep patent

Free format text: STATUS: NO OPPOSITION FILED WITHIN TIME LIMIT

26N No opposition filed

Effective date: 20050131

BERE Be: lapsed

Owner name: *HYDAC TECHNOLOGY G.M.B.H.

Effective date: 20050131

REG Reference to a national code

Ref country code: CH

Ref legal event code: PL

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: GB

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20060108

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: ES

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20060109

GBPC Gb: european patent ceased through non-payment of renewal fee

Effective date: 20060108

REG Reference to a national code

Ref country code: ES

Ref legal event code: FD2A

Effective date: 20060109

BERE Be: lapsed

Owner name: *HYDAC TECHNOLOGY G.M.B.H.

Effective date: 20050131

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: PT

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20040928

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: FR

Payment date: 20131119

Year of fee payment: 14

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: SE

Payment date: 20140121

Year of fee payment: 14

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: IT

Payment date: 20140113

Year of fee payment: 14

Ref country code: AT

Payment date: 20140114

Year of fee payment: 14

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: DE

Payment date: 20150127

Year of fee payment: 15

REG Reference to a national code

Ref country code: SE

Ref legal event code: EUG

REG Reference to a national code

Ref country code: AT

Ref legal event code: MM01

Ref document number: 265624

Country of ref document: AT

Kind code of ref document: T

Effective date: 20150108

REG Reference to a national code

Ref country code: FR

Ref legal event code: ST

Effective date: 20150930

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: SE

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20150109

Ref country code: AT

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20150108

Ref country code: FR

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20150202

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: IT

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20150108

REG Reference to a national code

Ref country code: DE

Ref legal event code: R119

Ref document number: 50102128

Country of ref document: DE

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: DE

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20160802