EP3384164A1 - Überwachungseinrichtung für werkzeugrevolver - Google Patents
Überwachungseinrichtung für werkzeugrevolverInfo
- Publication number
- EP3384164A1 EP3384164A1 EP16801136.9A EP16801136A EP3384164A1 EP 3384164 A1 EP3384164 A1 EP 3384164A1 EP 16801136 A EP16801136 A EP 16801136A EP 3384164 A1 EP3384164 A1 EP 3384164A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- pressure
- measuring
- fluid
- monitoring device
- displacement piston
- 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
Links
- 238000012806 monitoring device Methods 0.000 title claims abstract description 25
- 239000012530 fluid Substances 0.000 claims abstract description 72
- 238000006073 displacement reaction Methods 0.000 claims abstract description 36
- 230000008878 coupling Effects 0.000 claims description 6
- 238000010168 coupling process Methods 0.000 claims description 6
- 238000005859 coupling reaction Methods 0.000 claims description 6
- 230000006835 compression Effects 0.000 claims description 4
- 238000007906 compression Methods 0.000 claims description 4
- 238000004146 energy storage Methods 0.000 claims description 2
- 230000001105 regulatory effect Effects 0.000 abstract description 2
- 238000001514 detection method Methods 0.000 description 6
- 238000003754 machining Methods 0.000 description 4
- 238000012544 monitoring process Methods 0.000 description 3
- 238000000034 method Methods 0.000 description 2
- 238000007789 sealing Methods 0.000 description 2
- 240000006829 Ficus sundaica Species 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 230000001939 inductive effect Effects 0.000 description 1
- 238000003801 milling Methods 0.000 description 1
- 230000006641 stabilisation Effects 0.000 description 1
- 238000011105 stabilization Methods 0.000 description 1
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
- F15B15/00—Fluid-actuated devices for displacing a member from one position to another; Gearing associated therewith
- F15B15/20—Other details, e.g. assembly with regulating devices
- F15B15/28—Means for indicating the position, e.g. end of stroke
- F15B15/2807—Position switches, i.e. means for sensing of discrete positions only, e.g. limit switches
-
- 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
- F15B11/06—Servomotor systems without provision for follow-up action; Circuits therefor involving features specific to the use of a compressible medium, e.g. air, steam
- F15B11/072—Combined pneumatic-hydraulic systems
-
- 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
- F15B15/20—Other details, e.g. assembly with regulating devices
- F15B15/28—Means for indicating the position, e.g. end of stroke
- F15B15/2815—Position sensing, i.e. means for continuous measurement of position, e.g. LVDT
- F15B15/2838—Position sensing, i.e. means for continuous measurement of position, e.g. LVDT with out using position sensors, e.g. by volume flow measurement or pump speed
-
- 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
- F15B2211/40553—Flow control characterised by the type of flow control means or valve with pressure compensating valves
- F15B2211/40569—Flow control characterised by the type of flow control means or valve with pressure compensating valves the pressure compensating valve arranged downstream of the flow control means
-
- 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
- F15B2211/415—Flow control characterised by the connections of the flow control means in the circuit
- F15B2211/41527—Flow control characterised by the connections of the flow control means in the circuit being connected to an output member and a 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
- F15B2211/40—Flow control
- F15B2211/415—Flow control characterised by the connections of the flow control means in the circuit
- F15B2211/41527—Flow control characterised by the connections of the flow control means in the circuit being connected to an output member and a directional control valve
- F15B2211/41536—Flow control characterised by the connections of the flow control means in the circuit being connected to an output member and a directional control valve being connected to multiple ports of an output member
-
- 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
- F15B2211/63—Electronic controllers
- F15B2211/6303—Electronic controllers using input signals
- F15B2211/6306—Electronic controllers using input signals representing a pressure
- F15B2211/6313—Electronic controllers using input signals representing a pressure the pressure being a load pressure
Definitions
- the invention relates to a monitoring device for detecting at least one position of a displacement piston, which is guided longitudinally movable in a housing and limited in the housing at least one fluid chamber with variable volume, which is connected via a Druckmakerssan- circuit with a pressure fluid control device.
- displacement pistons which are actuated by pressure and can be activated by means of a pressure fluid control device, are used in tool turrets to carry out switching operations.
- This can be the locking of the rotary movement of the turret relative to the housing or the actuation of a sliding coupling between a motor drive device and a machining tool to be driven.
- the document DE 41 16 774 C1 shows an example of a tool turret in which are provided for locking the rotational movement of the turret relative to the housing on this and the turret coaxial Hirth gears with which a toothing on a sliding piston engages for locking the pressure-actuated is.
- Document DE 10 2009 042 772 A1 discloses a drive device in the case of a tool turret, in which, for the purpose of shifting a sliding clutch, the drive shaft of the coupling forms a displacement piston which is hydraulically movable for the switching operations of the clutch.
- the control of the switching operations carried out by means of the slide pistons is indispensable.
- the procedure is usually such that an inductive proximity switch detects the piston position in an end position. Since suitable proximity switches require a lot of space and are also expensive, so far only the detection of an end position of the piston is possible.
- an essential feature of the invention is that between the pressurized fluid
- a volume flow control device and, following this in the direction of the measuring port, a pressure detecting device are connected, which at least then emits a measuring signal when the slide piston has reached a predeterminable end position in the housing.
- the fluidic detection in which the already existing pressure fluid control device is part of the monitoring device and proximity switches are eliminated, simplifies the construction effort and reduces the space required.
- Messanschlüs- sen with associated pressure detecting device both opposite end positions of the piston detectable.
- the solution according to the invention is preferably used in tool turrets or tool disks, as are commonly used in machine tools for machining. Further applications are milling spindles, rotary tables and the like more, wherever a monitoring of fluidly controllable adjusting cylinders, especially with regard to their end position is required.
- the volume flow control device can be formed from at least one orifice plate with a downstream pressure reducing valve in the direction of the measuring port, and the pressure detecting device can consist of a pressure switch, which emits a measuring signal as soon as the displacement piston closes the measuring port in the assignable fluid chamber.
- the volume flow control device is preferably designed for a very small volume flow, which is supplied by the pressure fluid control device to the respective measuring port, which is closed at a respective end position of the piston, which in the relevant, leading to the measuring port measuring line leads to a pressure increase, through which the associated pressure switch switches.
- a spring-loaded check valve can be connected between the pressure-detecting device and the assignable measuring port, which opens in the direction of the measuring port and only a small one
- Closing pressure preferably less than 1 bar, preferably 0.5 bar.
- the measuring line is secured against actuating pressure prevailing in the fluid space and moving the piston away from the measuring port.
- the arrangement can advantageously be made such that the fluid space communicates with the measuring connection at a pressure supply connection of the pressure flow.
- Connected id control device via which the pressure fluid flows to a pressure sink or tank as soon as the displacement piston moves in the direction of the measuring port.
- the displacement piston in the housing limits two fluid spaces, each of which is adjacent to a piston side and both of which are connected to a pressure detecting device.
- the displacement piston is characterized hydraulically actuated by pressure supply ports of the pressure fluid control device for its displacement movements in both directions.
- each of a fluid space hydraulically and the other fluid idraum the displacement piston preferably supported by an energy storage such as a compression spring, pneumatically be controlled.
- the respective pressure fluid control device may have at least one control valve between at least one pressure supply source and the respectively hydraulically loadable fluid space of the displacement piston.
- pressure supply sources are provided which feed a pneumatic medium and / or hydraulic medium in the supply circuit for the displacement piston.
- the displacement piston may be part of a Hirth toothing of the locking device between the tool turret and housing or may be part of a tool coupling, via which a motorized tool drive with a machining tool on a tool turret can be coupled.
- FIG. 2 shows a symbol view of the hydraulic / pneumatic circuit of a second embodiment of the monitoring device according to the invention
- Fig. 3 is a schematically simplified and broken drawn partial longitudinal section, in which of a tool turret, only the portion is shown adjacent to a locking device between the housing and the turret and with a monitoring device according to the first
- Fig. 4 is an enlarged partial section of Fig. 3;
- FIG. 5 shows a representation corresponding to FIG. 3 with the cutting plane rotated in contrast thereto;
- FIG. 6 is an enlarged partial section of FIG. 5; FIG.
- 7 and 8 are partial longitudinal sections of the locking device adjacent region of the turret with each twisted cutting plane.
- FIG. 9 shows a longitudinal section, schematically drawn and broken away, in which a tool turret shows the motor drive device for a tool drive with a sliding piston operable by a sliding piston, which is provided with a monitoring device according to the second embodiment of the invention.
- The. Fig. 1 shows the fluid circuit for a first embodiment of the monitoring device according to the invention, wherein a respective displacement piston 1 each with its two piston sides limited to inflows and outflows fluid space 3 and 5 in the housing 7 of a tool revolver.
- the piston 1 can be moved from the illustrated intermediate position to the right into an end position which, when the piston 1 forms part of a locking device, corresponds to the locking state between turret and housing.
- a supply connection 9 is provided on the fluid space 3
- a supply connection 1 1 is provided on the fluid space 5, each of which is connected to a pressure fluid control device 13.
- a measuring connection 1 7 are provided on the fluid space 3 and a measuring connection 15 is provided on the fluid space 5.
- the pressure fluid control device 13 has an electrically operated 4/2-way valve 19 with user ports A and B, a pressure port P and a tank port T as a pressure sink.
- the utility connection A is connected via a supply line 21 to the supply connection 9 of the fluid chamber 3, and the utility connection B is connected via a supply line 23 to the supply connection 11 at the fluid space 5.
- a pressure supply unit is connected, which has in the usual manner in such supply units an electric motor driven hydraulic pump 25, the 19 leading the working pressure for a pressure port P of the directional control valve Pressure line 27 provides.
- a hydropneumatic pressure accumulator 29 For pressure stabilization is connected to this a hydropneumatic pressure accumulator 29 with its fluid side, whose gas side is biased according to the intended for the pressure line 27 working pressure, for example, with 40 bar.
- a filter 31 adjoining the pressure side of the hydraulic pump 25, a check valve 27 opening in the direction of the pressure line 27 and a pressure regulating valve 35 which secures the pressure line 27 against the tank and is set to a pressure of 50 bar by way of example.
- a draining the system enabling, manually operable shut-off valve 37 and a pressure gauge 39th
- both measuring ports 15 and 17 are each connected via a measuring line to the pressure fluid control device 13 in such a way that the measuring port 15 via a measuring line 41 with the user port A and the measuring port 1 7 via a measuring line 43 to the user port B of the directional control valve 19th are connected.
- a volumetric flow control device 45, a pressure switch 47 and a non-return valve 49 are arranged in succession in the direction of the respective measuring port 15 or 17.
- the volume flow control devices 45 are each formed by an orifice 50 and a pressure reducing valve 51 which is connected downstream of the latter in the direction of the respective measuring port 15 or 17.
- the non-return valve 49 which is connected directly to the respective measuring port 1 5 or 17 in the course of the measuring lines 41 and 43 and which is directed in the direction of the measuring port. 15, 17 opens, is set to a low closing pressure of example 0.5 bar.
- the volume flow control devices 45 are designed in such a way that in the measuring lines 41 and 43, when the check valve 49 is open, only an extremely small volume flow to the associated measuring port 15, 1 7 flows.
- Fig. 1 shows a state in which the directional control valve 19 connects the pressure port P to the user port B, so that the working pressure via the supply line 23 and the supply port 1 1 supplies the fluid chamber 5 with working pressure.
- the check valve 49 is blocked, the sliding piston 1 thereby moves in the direction of the unlocking position (to the left in FIG.
- the fluid volume located in the fluid chamber 3 being displaced from the supply connection 9 via the supply line 21 to the useful connection A of the directional control valve 19 and from there flows through the tank port T, which serves as a pressure sink and is connected via a check valve 52 to the tank. Since this is set to a very low opening pressure and the fluid space 3 is thus substantially depressurized, the check valve 49 connected to the measuring port 17 is open. However, as soon as the piston 1 reaches its locking end position, it closes the measuring port 1 7, which leads to a pressure rise in the measuring line 43, through which the pressure switch 47 switches and supplies a position signal for the locking end position.
- the fluid space 5 is provided as a pressure chamber for pressure actuation of the piston 1, while the piston movement in Fig. 2 to the right in the direction of the end position, the s in this embodiment as Einkuppel-end position of a sliding clutch, s. Fig. 9, is provided, is effected by a compression spring 53.
- the housing 7 guiding the displacement piston 1 is open on the piston side against which the pressure spring 53 engages, but has, as in the first embodiment, a measuring connection 17 which can be closed by the displacement piston 1 at the disengagement end position.
- the pressure fluid control device 13 is designed as in the first embodiment, as is the measuring line 41, which leads from the useful port A of the directional control valve 19 to the measuring port 15 on the fluid space 5, whose supply port 1 1, as in the first embodiment, is connected via the supply line 23 to the user port B of the directional control valve 19.
- a pneumatic supply 56 is provided, which is connected to the measuring line 17 leading to the measuring port 17.
- This pneumatic supply has an electrically operated 2/2-way valve 54, via which the measuring line 43 is connectable to an output line 55 of a source, not shown, for a pneumatic pressure in the range of 2 to 6 bar.
- the measuring line 43 as in the first embodiment, a diaphragm 50 and this downstream of the measuring port 1 7, a pressure switch 47 on.
- the fluid chamber 5 associated measuring line 41 is formed as in the first embodiment.
- FIG. 3 to 8 illustrate the use of the first embodiment of the monitoring device according to the invention for detecting the switching states of the locking device by means of which the turret 58 of a tool turret in selected rotational positions relative to the housing 7 is lockable.
- the locking device of the tool turret has, in a known manner on the turret head 58, a toothed rim 59 concentric with the axis of rotation of the turret head 58 in the form of a radial toothing, a so-called Hirth toothing.
- a second sprocket 60 also with Hirth serration formed.
- the displacement piston 1 which also has a ring gear 62 in the form of a Hirth toothing, which comes into engagement with the sprockets 59, 60 in the locking position.
- Figures 3 to 7 of the sliding piston 1 is shown in each case in its lifted by the sprockets 59, 60 unlocking end position. For its displacement movements, the piston 1 is in one
- FIGS 3 and 4 show a running in the housing 7 channel 66, which forms the supply line 21 for the fluid supply to the supply port 9 of the fluid space 3.
- Figures 5 and 6 show in the housing 7 a channel 67 which forms the supply line 23 for the fluid supply to the supply port 1 1 of the fluid space 5.
- the tool disk which is provided in the usual way with tool holder, not shown.
- the turret 58 For receiving this tool disk, the turret 58 has a radially projecting annular flange 69, which forms a contact surface 70, on which the tool disk, not shown, is mounted.
- the rotary bearing for the turret 58 has a radial bearing 72 on a guide part 71 projecting radially from the housing 7, which is overlapped by the turret 58.
- the external pressure fluid control device 13, to which the supply lines 21 and 23 forming channels 66 and 67 lead is not shown in the partial views of Figures 3 to 8, as well as the flow control devices 45, together with associated pressure switch 47 and Check valve 49 are connected to the measuring ports 1 5 and 17 of the fluid chambers 5 and 3, respectively. These measuring terminals 15 and 17 are shown in FIGS. 7 and 8.
- FIG. 7 shows the measuring port 17 located on the fluid space 3, which is closed in the unlocking end position of the piston 1 shown in this figure.
- a measuring channel is denoted by 73, which leads from the measuring port 1 7 to the check valve 49 of the associated measuring line 43.
- FIG. 8, which shows the piston 1 in the locking end position shows a measuring channel 74 which leads from the measuring port 15 of the fluid chamber 5 to the check valve 49 of the associated measuring line 41.
- FIG. 9 illustrates the use of the second embodiment (FIG. 2) of the monitoring device according to the invention for detecting the engagement state and the disengagement state of a sliding clutch, via which in a tool turret an electric motor drive with a machining tool can be coupled.
- the sliding coupling has an axially displaceable coupling hub 76 which is shown in its disengaging position in FIG. 9, in which it is pushed back against the force of the pressure spring 53 acting on it. This displacement force is effected by pressure actuation of the displacement piston 1, which is guided in a cylindrical body forming a ring body 79.
- the piston 1 is sealed relative to the annular body 79 and the clutch hub 76 by means of seals 80 and 81, so that on the piston outer side of the fluid chamber 5 forms a pressure chamber which moves by pressure supply via the supply port 1 1, the piston 1 in Fig. 9 down and the clutch hub 76 moves together with their overlapped by the piston 1 roller bearing 83 down to the disengaged position.
- the piston 1 closes the located on its underside measuring port 1 7.
Landscapes
- Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Fluid Mechanics (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Actuator (AREA)
- Machine Tool Sensing Apparatuses (AREA)
- Fluid-Pressure Circuits (AREA)
- Measuring Fluid Pressure (AREA)
- Gripping On Spindles (AREA)
Abstract
Description
Claims
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE102015015858.9A DE102015015858A1 (de) | 2015-12-03 | 2015-12-03 | Überwachungseinrichtung für Werkzeugrevolver |
PCT/EP2016/001975 WO2017092856A1 (de) | 2015-12-03 | 2016-11-23 | Überwachungseinrichtung für werkzeugrevolver |
Publications (3)
Publication Number | Publication Date |
---|---|
EP3384164A1 true EP3384164A1 (de) | 2018-10-10 |
EP3384164B1 EP3384164B1 (de) | 2024-02-14 |
EP3384164C0 EP3384164C0 (de) | 2024-02-14 |
Family
ID=57394522
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP16801136.9A Active EP3384164B1 (de) | 2015-12-03 | 2016-11-23 | Überwachungseinrichtung für werkzeugrevolver |
Country Status (5)
Country | Link |
---|---|
US (1) | US10641299B2 (de) |
EP (1) | EP3384164B1 (de) |
CN (1) | CN108291562B (de) |
DE (1) | DE102015015858A1 (de) |
WO (1) | WO2017092856A1 (de) |
Families Citing this family (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE102017128888A1 (de) * | 2017-12-05 | 2019-06-06 | Endress+Hauser Conducta Gmbh+Co. Kg | Wechselarmatur und Verfahren zum Detektieren einer Endlage einer Wechselarmatur |
US11547057B2 (en) * | 2020-04-22 | 2023-01-10 | Deere & Company | Hydraulic dampening system for a rear gate of a round baler |
Family Cites Families (19)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE1576070A1 (de) * | 1965-10-13 | 1969-06-26 | Daimler Benz Ag | Vorrichtung zum Betaetigen eines Endschalters an wechselseitig von einem Druckmittel beaufschlagten Arbeitskolben,insbesondere an Werkzeugmaschinen |
US3691902A (en) * | 1971-07-13 | 1972-09-19 | Us Army | Monitoring system for pneumatic cylinder |
DE4116774C1 (de) | 1991-05-23 | 1992-05-27 | Sauter Feinmechanik Gmbh, 7430 Metzingen, De | |
AUPN687795A0 (en) * | 1995-11-29 | 1995-12-21 | Parker Hannifin (Australia) Pty Limited | Pneumatic or hydraulic cylinders |
JP3156632B2 (ja) * | 1997-05-15 | 2001-04-16 | 株式会社豊田自動織機製作所 | 流体圧シリンダ及びフォークリフト |
JP4342747B2 (ja) * | 2000-10-06 | 2009-10-14 | 株式会社安藤製作所 | シリンダ制御用センサ及びこれを備えたシリンダ装置 |
DE10342037A1 (de) | 2003-09-11 | 2005-04-07 | Bosch Rexroth Ag | Steueranordnung und Verfahren zur Druckmittelversorgung von zumindest zwei hydraulischen Verbrauchern |
CN1206464C (zh) * | 2003-11-28 | 2005-06-15 | 三一重工股份有限公司 | 带压差触发换向控制结构的液压油缸 |
DE102007035030A1 (de) * | 2007-07-26 | 2009-01-29 | Sauter Feinmechanik Gmbh | Werkzeugrevolvereinheit für eine Werkzeugmaschine |
DE102007054503A1 (de) * | 2007-11-13 | 2009-05-20 | Hydac Fluidtechnik Gmbh | Ventilvorrichtung |
CN201396344Y (zh) * | 2009-05-26 | 2010-02-03 | 薛国光 | 数字式电液同步控制系统 |
US9074347B2 (en) * | 2009-05-29 | 2015-07-07 | Volvo Construction Equipment Ab | Hydraulic system and a working machine comprising such a hydraulic system |
DE102009042772A1 (de) | 2009-09-25 | 2011-07-14 | Sauter Feinmechanik GmbH, 72555 | Antriebsvorrichtung |
CN201554723U (zh) * | 2009-10-22 | 2010-08-18 | 安徽星马汽车股份有限公司 | 混凝土泵车电液耦合式主油缸换向控制装置 |
CN201723526U (zh) * | 2010-03-21 | 2011-01-26 | 徐州压力机械有限公司 | 液压缸双向行程控制装置 |
DE202012013171U1 (de) * | 2012-04-16 | 2015-06-30 | Weber-Hydraulik Gmbh | Fahrzeug |
DE102012012142A1 (de) * | 2012-06-20 | 2013-12-24 | Robert Bosch Gmbh | Hydraulische Stelleinrichtung |
CN203978789U (zh) * | 2014-07-02 | 2014-12-03 | 北汽福田汽车股份有限公司 | 一种基于压力信号的换向装置及泵车 |
CN204458584U (zh) * | 2014-12-25 | 2015-07-08 | 北京普发兴业动力科技发展有限责任公司 | 一种压力自适应液压换向系统 |
-
2015
- 2015-12-03 DE DE102015015858.9A patent/DE102015015858A1/de active Pending
-
2016
- 2016-11-23 WO PCT/EP2016/001975 patent/WO2017092856A1/de unknown
- 2016-11-23 EP EP16801136.9A patent/EP3384164B1/de active Active
- 2016-11-23 CN CN201680070206.9A patent/CN108291562B/zh active Active
- 2016-11-23 US US15/778,300 patent/US10641299B2/en active Active
Also Published As
Publication number | Publication date |
---|---|
EP3384164B1 (de) | 2024-02-14 |
DE102015015858A1 (de) | 2017-06-08 |
CN108291562B (zh) | 2021-03-30 |
US10641299B2 (en) | 2020-05-05 |
US20180347600A1 (en) | 2018-12-06 |
EP3384164C0 (de) | 2024-02-14 |
CN108291562A (zh) | 2018-07-17 |
WO2017092856A1 (de) | 2017-06-08 |
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