WO2022083816A1 - Schnellwechsler mit einer steuereinrichtung mit einem mechanisch und hydraulisch steuerbaren ventil - Google Patents
Schnellwechsler mit einer steuereinrichtung mit einem mechanisch und hydraulisch steuerbaren ventil Download PDFInfo
- Publication number
- WO2022083816A1 WO2022083816A1 PCT/DE2021/100702 DE2021100702W WO2022083816A1 WO 2022083816 A1 WO2022083816 A1 WO 2022083816A1 DE 2021100702 W DE2021100702 W DE 2021100702W WO 2022083816 A1 WO2022083816 A1 WO 2022083816A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- connection
- button
- switching valve
- unlocking
- locking
- Prior art date
Links
- 230000008878 coupling Effects 0.000 claims abstract description 13
- 238000010168 coupling process Methods 0.000 claims abstract description 13
- 238000005859 coupling reaction Methods 0.000 claims abstract description 13
- 210000000078 claw Anatomy 0.000 description 8
- 239000012530 fluid Substances 0.000 description 6
- 238000010586 diagram Methods 0.000 description 4
- 230000000903 blocking effect Effects 0.000 description 3
- 230000006835 compression Effects 0.000 description 2
- 238000007906 compression Methods 0.000 description 2
- 230000003213 activating effect Effects 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 230000002035 prolonged effect Effects 0.000 description 1
- 239000000523 sample Substances 0.000 description 1
Classifications
-
- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02F—DREDGING; SOIL-SHIFTING
- E02F3/00—Dredgers; Soil-shifting machines
- E02F3/04—Dredgers; Soil-shifting machines mechanically-driven
- E02F3/28—Dredgers; Soil-shifting machines mechanically-driven with digging tools mounted on a dipper- or bucket-arm, i.e. there is either one arm or a pair of arms, e.g. dippers, buckets
- E02F3/36—Component parts
- E02F3/3604—Devices to connect tools to arms, booms or the like
- E02F3/3609—Devices to connect tools to arms, booms or the like of the quick acting type, e.g. controlled from the operator seat
- E02F3/3622—Devices to connect tools to arms, booms or the like of the quick acting type, e.g. controlled from the operator seat with a hook and a locking element acting on a pin
-
- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02F—DREDGING; SOIL-SHIFTING
- E02F3/00—Dredgers; Soil-shifting machines
- E02F3/04—Dredgers; Soil-shifting machines mechanically-driven
- E02F3/28—Dredgers; Soil-shifting machines mechanically-driven with digging tools mounted on a dipper- or bucket-arm, i.e. there is either one arm or a pair of arms, e.g. dippers, buckets
- E02F3/36—Component parts
- E02F3/3604—Devices to connect tools to arms, booms or the like
- E02F3/3609—Devices to connect tools to arms, booms or the like of the quick acting type, e.g. controlled from the operator seat
- E02F3/3627—Devices to connect tools to arms, booms or the like of the quick acting type, e.g. controlled from the operator seat with a hook and a longitudinal locking element
-
- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02F—DREDGING; SOIL-SHIFTING
- E02F3/00—Dredgers; Soil-shifting machines
- E02F3/04—Dredgers; Soil-shifting machines mechanically-driven
- E02F3/28—Dredgers; Soil-shifting machines mechanically-driven with digging tools mounted on a dipper- or bucket-arm, i.e. there is either one arm or a pair of arms, e.g. dippers, buckets
- E02F3/36—Component parts
- E02F3/3604—Devices to connect tools to arms, booms or the like
- E02F3/3609—Devices to connect tools to arms, booms or the like of the quick acting type, e.g. controlled from the operator seat
- E02F3/3663—Devices to connect tools to arms, booms or the like of the quick acting type, e.g. controlled from the operator seat hydraulically-operated
-
- 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
- E02F9/226—Safety arrangements, e.g. hydraulic driven fans, preventing cavitation, leakage, overheating
-
- 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
- E02F9/2221—Control of flow rate; Load sensing arrangements
- E02F9/2225—Control of flow rate; Load sensing arrangements using pressure-compensating valves
-
- 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
- E02F9/2264—Arrangements or adaptations of elements for hydraulic drives
- E02F9/2267—Valves or distributors
-
- 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
- E02F9/2278—Hydraulic circuits
- E02F9/2285—Pilot-operated systems
Definitions
- the invention relates to a quick coupler for a work machine for coupling an attachment, as is generically known from DE 20 2014 004 430 U1.
- Quick couplers on working machines are used to quickly couple different types of attachments.
- Working machines are, for example, excavators, wheel loaders and machines from the construction industry and agriculture.
- Attachments are, for example, spoons, hammers, tillers, grabs, shovels and the like.
- quick couplers By using quick couplers, it is possible for a machine operator to quickly couple various attachments to the work machine and then to work with them.
- Typical quick couplers are connected to an attachment via two connections.
- the connections are each formed via a connection partner present on the quick coupler and on the attachment, the connection partners occupying a relative spatial position to one another in the coupling mode, which they maintain in the working mode. It is absolutely necessary to secure this relative spatial position (working position) to one another if the connection for the working mode still has impermissible degrees of freedom, or is advantageous in order to increase safety.
- a first connection is generally formed by a pair of claws formed on the quick coupler and a locating bolt formed on the attachment.
- the pair of claws encloses the locating bolt except for a claw opening that is larger than the diameter of the locating bolt, and thus forms a directly form-fitting first connection which, apart from the possibility of slipping out of the claw opening, gives the locating bolt only one degree of freedom, the rotation around its geometric axis , leaves.
- Such a first connection can be found almost universally in the prior art for quick couplers.
- Some of these quick couplers have securing elements that, after the production of this first connection, or both connections, the working position of the two Connection partners, i.e. the position of the locating pin within the pair of claws, secure by restricting a free opening formed by the claw opening by pushing in or pivoting in the securing element, so that it becomes smaller than the diameter of the locating pin.
- the attachment is positioned on the quick coupler by a pivoting movement of the quick coupler about the geometric axis of the first locating pin so that the attachment and the quick coupler assume a spatial position relative to one another in which the second connection is created.
- the second connection is established via a receiving plate present on the quick coupler and a locking plate present on the add-on part, which are joined together in the coupling mode.
- two locking bolts are inserted through the mounting plate into the openings provided in the locking plate.
- the locking is controlled in such a way that the locking bolts can only be pushed into the locking plate after the attachment has been swiveled completely and correctly onto the quick coupler. This means that a locked position can only be established when the two connection partners have assumed the intended relative spatial position (working position) for locking the second connection to one another.
- the flow of force within the first connection generally takes place via the first pair of claws, and within the second connection via the at least one locking element. This means that after the first locating bolt has been hooked into the first pair of claws, the working machine is only able to work when the second connection, in which the locking element is in the locking position, has also been completely established.
- Some of these quick couplers have a mechanical button that is actuated when the attachment is coupled by a connection partner of the attachment.
- the button is in a disengaged position from the quick coupler when the connection partner in question has not yet assumed the intended spatial position (working position) in relation to the connection partner of the quick coupler and in a fully engaged position when the connection partners in question are connected to one another.
- the movement of the securing element between an unlocked position and the locked position is controlled via the button and an associated hydraulic control device. In the unlocked position, the connection in question can be canceled simply by moving the quick coupler relative to the attachment. In the locked position, the connection in question cannot be released.
- a control device for controlling a double-acting hydraulic cylinder and thus the movement of a securing element between an unlocked position and a locked position is known from DE 10 2013 110 420 A1.
- An unlocking chamber and a locking chamber of the hydraulic cylinder are alternatively connected to a pressure medium connection or a tank via a switching valve.
- the switching valve is moved by a compression spring into a first switching position and by a hydraulic control pressure against the force of the compression spring into a second switching position.
- the hydraulic control pressure is applied when there is pressure on the line that connects the pressure medium connection to the unlocking chamber and a button has been moved to a fully engaged position, which is only the case if an attachment has been correctly coupled, i.e. here if a Coupling element was retracted into the recording.
- a valve arrangement is integrated into the control line of the switching valve, which, influenced by the mechanical actuation of the button, opens or interrupts the control line for a pressure medium flow.
- the aforementioned DE 20 2014 004 430 U1 discloses a quick coupler, called quick coupler there, with two connections within the meaning of the general description given above. The two connections are formed there by a coupling mount or a locking mount and a respective locking pin. The locking axis, which is properly arranged in the locking receptacle, is locked by a locking element that can be actuated with a pressure medium.
- a double-acting hydraulic cylinder is used to actuate the locking element.
- the coupling receptacle is assigned a securing element to be actuated with a pressure medium, which is actuated via two single-acting hydraulic cylinders (locking cylinder and unlocking cylinder) connected to the same pressure medium circuit as the locking element.
- a locking pressure line of the double-acting hydraulic cylinder for moving the locking element is connected via a switching valve to either the locking cylinder or the unlocking cylinder of the securing element. If the locking pressure line of the double-acting hydraulic cylinder is connected to the locking cylinder, the locking element and the securing element are locked or unlocked at the same time.
- the switching valve is either hydraulically controlled when there is pressure in the locking pressure line of the double-acting hydraulic cylinder, or mechanically controlled by a spring-loaded button. If an attachment is uncoupled, the button goes into a disengaged, "transmitting motion" position, whereby the switching valve is not yet switched, so that there is still pressure on the unlocking pressure line of the double-acting hydraulic cylinder and on the unlocking cylinder. If a new attachment is coupled, the button is moved to an engaged position and switches the switching valve, whereby the unlocking pressure line of the double-acting hydraulic cylinder, which is still under pressure, is now connected to the locking cylinder and the safety element is locked independently of the locking element.
- the button goes back into a release position, that is, the switching valve can now be switched hydraulically again when pressure is applied again to the locking pressure line of the double-acting hydraulic cylinder. In this case, the pressure remains on the locking cylinder.
- the special feature of the hydraulic circuit of the aforementioned DE 20 2014 004 430 111 is that a coupled attachment can be secured via the mechanical actuation of a button, i.e. the securing element locks one of the two connections, independently of locking the other connection, by a locking element.
- the button is pushed into an engaged position by the attachment, with a switching valve being switched.
- the switching valve is switched here mechanically into one of two switch positions and hydraulically into the other switch position.
- the control device has a hydraulic cylinder with an unlocking chamber and a locking chamber, and a switching valve.
- the changeover valve is a two-way valve with four connections, with a first consumer connection, a second consumer connection, a pressure medium connection and a tank connection. The first consumer connection and the unlocking chamber are connected via a first line.
- a switching valve is arranged between the second consumer connection and the locking chamber, which can be controlled hydraulically via a hydraulic control connection and mechanically via a spring-loaded button.
- the switching valve can be switched between an open position and a blocked position, being switched to the open position when the button is in the fully engaged position, so that the securing element, controlled by the switching valve, is pushed into the locking or unlocking position.
- the hydraulic control connection is connected to the first line, whereby the switching valve is in the open position even when the button is in the disengaged or not fully engaged position by the application of hydraulic pressure to the first line is switched, whereby the safety element is pushed into the unlocked position regardless of the position of the button.
- the switching valve advantageously has a valve return spring with a spring force that switches the switching valve into the blocking position when the hydraulic and/or mechanical pressure is not acting.
- the button is assigned a button return spring connected in series with the valve return spring.
- the locking chamber is preceded by an unlockable check valve with a hydraulic unlocking connection which is connected to the first line.
- the switching valve and the check valve are advantageously an integral part of a switching valve unit.
- FIG. 1 shows a first embodiment of a quick coupler
- FIG. 3a shows a hydraulic circuit diagram of a control device of the quick coupler in a first switching mode, the securing element is in the unlocked position, the button is fully disengaged and the switching valve is in the first switching position,
- FIG. 3b shows the hydraulic circuit diagram according to FIG. 3a in a second switching mode, after the changeover valve has only been switched over in the first switching mode
- 3c shows the hydraulic circuit diagram according to FIG. 3a in a third switching mode after the button has been engaged in the second switching mode
- FIG. 3d shows the hydraulic circuit diagram according to FIG. 3a in a fourth switching mode after the button has been engaged in the second switching mode.
- a quick coupler 10 according to the invention differs from those known from the prior art by a different control device, and is explained below with reference to various possible switching modes of a hydraulic circuit, shown in FIGS. 3a-3d.
- FIG. 1 and FIG. 2 show basic sketches of two known designs of quick couplers 10 attached to a working machine 12, due to the different design of the connection partners on an attachment 11.
- a securing element 5 and a button 4 are assigned to one of the two connections created when the attachment 11 is coupled.
- 3a - 3d show the quick coupler 10 with the securing element 5 schematically and the control device in the form of a hydraulic circuit.
- the hydraulic circuit essentially contains a switching valve 3, a switching valve unit 2 with a non-return function, which can be switched mechanically via a spring-loaded button 4 and also hydraulically against spring force, and a hydraulic cylinder 1 with an unlocking chamber 1.1, a locking chamber 1.2 and a piston 1 .3, on which the securing element 5 is attached directly or indirectly.
- the control device is provided for pushing the securing element 5 alternatively into a locked position and an unlocked position.
- the securing element 5 can only be moved into the locking position when the button 4 is completely in an engaged position. It is essential to the invention that the securing element 5 can be moved into the unlocked position at any time, regardless of the position of the button 4.
- a problem that arises from an unavoidable leakage of the hydraulic control system of a working machine 12 can thus be solved.
- the pressure present in the unlocking chamber 1.1 drops slowly.
- the pressure force in the unlocking cylinder 1.1 is reduced and it can happen that the Securing element 5 is unintentionally pushed in the direction of the locked position.
- the button 4, which is in a fully disengaged position due to the spring force of the button return spring 4.1 cannot be actuated, or at least cannot be fully engaged, since it is via the Securing element 5 protrudes in the direction of the attachment to be coupled and thus blocks the way for the mechanical actuation of the button 4 by the attachment 11 .
- the securing element 5 is moved linearly into the unlocking position or the locking position via the alternative pressurization of the unlocking chamber 1.1 or the locking chamber 1.2 by supplying a pressurized fluid.
- the switching valve 3 is a 2/4-way valve with two switching positions and four connections, namely a first consumer connection A, a second consumer connection B, a pressure medium connection P and a tank connection T.
- the pressure medium connection P is connected to a hydraulic pump, which injects a fluid under pressure pumps the hydraulic circuit in order to alternatively apply hydraulic pressure to the unlocking chamber 1.1 or the locking chamber 1.2. If the hydraulic pump is switched off, the hydraulic connection between pressure medium connection P and hydraulic cylinder 1 is closed and the existing pressure remains stable, at least for a period relevant to the working time of a working machine.
- the tank port T is connected to a tank.
- the first consumer port A is connected to the pressure medium port P
- the second consumer port B is connected to the pressure medium port P.
- a first line V1 connects the first consumer port A of the switching valve 3 to the unlocking chamber 1.1 and an opening and unlocking port 2.4 of the switching valve unit 2.
- a second line V2, the switching valve unit 2 and a third line V3 connect the second consumer port B to the locking chamber 1.2. This Depending on the switching mode of the control device, the connection can be interrupted, open in only one flow direction or in both flow directions.
- the switching valve unit 2 fulfills the function of a switching valve, formed by a 2/2-way valve and a pilot operated check valve. In the hydraulic circuit shown in the figures, the mode of operation of the switching valve unit 2 is therefore explained using a switching valve 2.1 and a pilot operated check valve 2.2.
- the switching valve unit 2 has an inflow connection 2.3, the opening and unlocking connection 2.4 and a return flow connection 2.5.
- the inflow connection 2.3 is connected to the second consumer connection B via the second line V2.
- the hydraulic medium is supplied to the switching valve unit 2 via this inflow connection 2.3.
- the return flow connection 2.5 is via the third line V3 with the locking chamber
- the switching valve 2.1 can be switched mechanically by moving the button 4 into two switching positions, in which the securing element 5 is moved into an unlocked position or a locking position, and can only be switched hydraulically into the switching position in which the securing element 5 is in the unlocking position is pushed.
- the control device thus meets the required safety conditions.
- button 4 can only be locked when button 4 is in an engaged position.
- the protruding from the quick coupler 10 button 4 is engaged in the quick coupler 10, while the two connection partners when coupling the attachment 11 to the quick coupler 10 as intended mated, and is fully engaged when they are intended to abut and form a bond.
- the securing element 5 is automatically pushed into the locking position.
- Fig. 3a the hydraulic circuit is shown in a first switching mode.
- the securing element 5 is in the unlocked position and the button 4 is fully disengaged and the switching valve 3 is in the first switching position.
- the first connection V1 and the unlocking chamber 1.1 are under pressure, the piston 1.3 is retracted and the securing element 5 is in the unlocked position. Due to the pressure present at the opening and unlocking connection 2.4, the check valve 2.2 is unlocked and the switching valve 2.1 is in an open position, so that the fluid can be discharged via the tank connection T to relieve the pressure in the locking chamber 1.2.
- the button 4 is held by the restoring force of the button return spring 4.1 in the fully disengaged position.
- Switching valve 3 was unintentionally switched to the second switching position. This means that the first line V1 is pressure-free, the switching valve 2.1 goes into a blocking position, and the check valve 2.2 is blocked.
- the piston 1.3 remains in the unlocked position due to the closed, hermetically sealed space formed by the locking chamber 1.2, which is closed by the check valve 2.2. This ensures that it cannot be locked if an attachment is not correctly coupled to the working machine12. Basically remains independent of the Position of the switching valve 3, the securing element 5 in the unlocked position when the button 4 is in a disengaged or fully disengaged position.
- button 4 To lock, button 4 must be pushed into a fully engaged position. This is only possible mechanically by actuating the button 4 if the securing element 5 is also in the unlocked position. It is essential to the invention that the hydraulic circuit is designed in such a way that the securing element 5 can also be unlocked through the possibility of alternative hydraulic switching of the switching valve unit 2 if there is no access to the button 4 .
- the switching valve 3 is preferably in its second switching position when the button 4 is to be engaged for locking.
- the hydraulic circuit is shifted from the second shift mode (Fig. 3b) to a third shift mode, shown in Fig. 3c, by mechanically engaging the button 4. This takes place while the attachment 11 is being coupled to the quick coupler 10 of the work machine 12.
- the switching valve 2.1 is mechanically switched to the open position.
- the fluid present at the inflow connection 2.1 of the switching valve unit 2 is passed under pressure via the check valve 2.2 in its direction of flow into the locking chamber 1.2 and the fluid in the unlocking chamber 1.1 flows back into the tank.
- the piston 1 .3 is extended and the securing element 5 is guided into the locking position.
- the hydraulic circuit can also be in the first shift mode (Fig. 3a) when the button 4 is mechanically engaged, shown in Fig. 3d.
- the switching valve 3 is here in the first switching position, which means that hydraulic pressure is applied to the first line V1 and thus to the switching valve 2.1, so that this is independent of the position of the button 4 on the way from the fully disengaged position to the fully engaged position , is switched to the open position.
- the changeover valve 3 is switched to the second switching position, although the control pressure drops, it remains in the open position and the locking chamber 1.2 is pressurized, so that the securing element 5 is guided into the locking position. It is not decisive in which of the two positions the changeover valve 3 is located when the mechanical button 4 is actuated.
- V1 first line between on the one hand a first consumer connection A and on the other hand the unlocking chamber 1.1 and the opening and unlocking connection 2.4
- V2 second line between on the one hand the second consumer connection B and on the other hand the inflow connection 2.3
- V3 third line between on the one hand at the control valve 2 and on the other hand the return flow connection 2.5 A first consumer connection
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Mining & Mineral Resources (AREA)
- Civil Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Structural Engineering (AREA)
- Quick-Acting Or Multi-Walled Pipe Joints (AREA)
Abstract
Description
Claims
Priority Applications (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
EP21772667.8A EP4229243A1 (de) | 2020-10-19 | 2021-08-19 | Schnellwechsler mit einer steuereinrichtung mit einem mechanisch und hydraulisch steuerbaren ventil |
US18/248,751 US20230417011A1 (en) | 2020-10-19 | 2021-08-19 | Quick-change device having a control device with a mechanically and hydraulically controllable valve |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE102020127479.3 | 2020-10-19 | ||
DE102020127479.3A DE102020127479B3 (de) | 2020-10-19 | 2020-10-19 | Schnellwechsler mit einer Steuereinrichtung mit einem mechanisch und hydraulisch steuerbaren Ventil |
Publications (1)
Publication Number | Publication Date |
---|---|
WO2022083816A1 true WO2022083816A1 (de) | 2022-04-28 |
Family
ID=75155782
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/DE2021/100702 WO2022083816A1 (de) | 2020-10-19 | 2021-08-19 | Schnellwechsler mit einer steuereinrichtung mit einem mechanisch und hydraulisch steuerbaren ventil |
Country Status (4)
Country | Link |
---|---|
US (1) | US20230417011A1 (de) |
EP (1) | EP4229243A1 (de) |
DE (1) | DE102020127479B3 (de) |
WO (1) | WO2022083816A1 (de) |
Citations (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US20060237201A1 (en) * | 2005-01-07 | 2006-10-26 | Kabushiki Kaisha Muroto Tekkosho | Safety device for attachment fastening device of power shovel |
DE202014004430U1 (de) | 2013-05-31 | 2014-09-02 | Kinshofer Gmbh | Schnellkuppler |
DE102013110420A1 (de) | 2013-09-20 | 2015-04-09 | Seal Concept Gmbh | Steuereinrichtung |
WO2019032000A1 (en) * | 2017-08-10 | 2019-02-14 | Götene Ufo Ab | QUICK COUPLING |
-
2020
- 2020-10-19 DE DE102020127479.3A patent/DE102020127479B3/de active Active
-
2021
- 2021-08-19 US US18/248,751 patent/US20230417011A1/en active Pending
- 2021-08-19 WO PCT/DE2021/100702 patent/WO2022083816A1/de active Application Filing
- 2021-08-19 EP EP21772667.8A patent/EP4229243A1/de active Pending
Patent Citations (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US20060237201A1 (en) * | 2005-01-07 | 2006-10-26 | Kabushiki Kaisha Muroto Tekkosho | Safety device for attachment fastening device of power shovel |
DE202014004430U1 (de) | 2013-05-31 | 2014-09-02 | Kinshofer Gmbh | Schnellkuppler |
DE102013110420A1 (de) | 2013-09-20 | 2015-04-09 | Seal Concept Gmbh | Steuereinrichtung |
WO2019032000A1 (en) * | 2017-08-10 | 2019-02-14 | Götene Ufo Ab | QUICK COUPLING |
Also Published As
Publication number | Publication date |
---|---|
EP4229243A1 (de) | 2023-08-23 |
DE102020127479B3 (de) | 2021-04-15 |
US20230417011A1 (en) | 2023-12-28 |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
EP1624116B1 (de) | Hydraulikschnellkupplung | |
EP1727946B1 (de) | Schnellwechselvorrichtung mit einer hydraulischen kupplung für medien an einem baugerät | |
EP2018456A1 (de) | Schnellwechselvorrichtung | |
DE10227966A1 (de) | Hydraulische Steueranordnung für eine mobile Arbeitsmaschine | |
EP3178997B1 (de) | Ventileinheit für schnellwechsler sowie schnellwechselsystem | |
DE202014001328U1 (de) | Schnellkuppler | |
DE102008006211B4 (de) | Anbauverdichter | |
DE202016004202U1 (de) | Schnellkuppler | |
DE102009052257A1 (de) | Ventilbaugruppe | |
EP2698477B1 (de) | Schnellwechsler; Verfahren zum Betreiben eines Schnellwechslers und Schnellwechselvorrichtung | |
WO2020002323A1 (de) | Schnellwechsler und schnellwechselvorrichtung mit einem schnellwechsler | |
DE112019004752B4 (de) | Ventilvorrichtung zum verhindern eines abdriftens, schaufelvorrichtung und arbeitsmaschine | |
DE202008015191U1 (de) | Schnellwechseleinrichtung | |
AT409060B (de) | Vorrichtung zur stabilisierung der unterlenker eines traktors | |
DE102020127479B3 (de) | Schnellwechsler mit einer Steuereinrichtung mit einem mechanisch und hydraulisch steuerbaren Ventil | |
DE4408386C2 (de) | Hydraulisch betätigte Verriegelungsvorrichtung für Schnellwechsler an Bau- und Arbeitsmaschinen | |
DE4311275C2 (de) | Folgesteuerung oder Vorrangschaltung für einen Drehpflug mit Pflugrahmeneinschwenkung | |
EP0347562A2 (de) | Sicherheitsventil (II) | |
DE2849704A1 (de) | Hydraulisches steuergeraet | |
DE102013110420A1 (de) | Steuereinrichtung | |
DE20313104U1 (de) | Baugruppe für ein Fahrwerkstabilisierungssystem | |
DE2129862B2 (de) | Hydraulisch betätigte Wendevorrichtung für Volldrehpflüge | |
DE10354957A1 (de) | Hydraulische Steueranordnung für ein mobiles Arbeitsgerät | |
DE102004004332A1 (de) | Baumaschine | |
EP3789540A1 (de) | Maschine |
Legal Events
Date | Code | Title | Description |
---|---|---|---|
REG | Reference to national code |
Ref country code: DE Ref legal event code: R082 Representative=s name: GLEIM PETRI PATENT- UND RECHTSANWALTSPARTNERSC, DE Ref country code: DE Ref legal event code: R082 Representative=s name: GLEIM PETRI OEHMKE PATENT- UND RECHTSANWALTSPA, DE |
|
121 | Ep: the epo has been informed by wipo that ep was designated in this application |
Ref document number: 21772667 Country of ref document: EP Kind code of ref document: A1 |
|
WWE | Wipo information: entry into national phase |
Ref document number: 18248751 Country of ref document: US |
|
ENP | Entry into the national phase |
Ref document number: 2021772667 Country of ref document: EP Effective date: 20230519 |