EP3597584B1 - Crane telescope locking device - Google Patents

Crane telescope locking device Download PDF

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Publication number
EP3597584B1
EP3597584B1 EP19181090.2A EP19181090A EP3597584B1 EP 3597584 B1 EP3597584 B1 EP 3597584B1 EP 19181090 A EP19181090 A EP 19181090A EP 3597584 B1 EP3597584 B1 EP 3597584B1
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EP
European Patent Office
Prior art keywords
cylinder
crane
telescopic
hydraulic
telescope
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Application number
EP19181090.2A
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German (de)
French (fr)
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EP3597584A1 (en
Inventor
Thomas Heidrich
Hasko Karge
Johannes Schürmann
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.)
Manitowoc Crane Group France SAS
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Manitowoc Crane Group France SAS
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Publication of EP3597584A1 publication Critical patent/EP3597584A1/en
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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B66—HOISTING; LIFTING; HAULING
    • B66C—CRANES; LOAD-ENGAGING ELEMENTS OR DEVICES FOR CRANES, CAPSTANS, WINCHES, OR TACKLES
    • B66C23/00—Cranes comprising essentially a beam, boom, or triangular structure acting as a cantilever and mounted for translatory of swinging movements in vertical or horizontal planes or a combination of such movements, e.g. jib-cranes, derricks, tower cranes
    • B66C23/62—Constructional features or details
    • B66C23/64—Jibs
    • B66C23/70—Jibs constructed of sections adapted to be assembled to form jibs or various lengths
    • B66C23/701—Jibs constructed of sections adapted to be assembled to form jibs or various lengths telescopic
    • B66C23/708—Jibs constructed of sections adapted to be assembled to form jibs or various lengths telescopic locking devices for telescopic jibs
    • 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
    • F15B15/08—Characterised by the construction of the motor unit
    • F15B15/14—Characterised by the construction of the motor unit of the straight-cylinder type
    • F15B15/16—Characterised by the construction of the motor unit of the straight-cylinder type of the telescopic type
    • 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
    • F15B15/26—Locking mechanisms
    • F15B15/261—Locking mechanisms using positive interengagement, e.g. balls and grooves, for locking in the end positions
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F15—FLUID-PRESSURE ACTUATORS; HYDRAULICS OR PNEUMATICS IN GENERAL
    • F15B—SYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL; FLUID-PRESSURE ACTUATORS, e.g. SERVOMOTORS; DETAILS OF FLUID-PRESSURE SYSTEMS, NOT OTHERWISE PROVIDED FOR
    • F15B2211/00—Circuits for servomotor systems
    • F15B2211/70—Output members, e.g. hydraulic motors or cylinders or control therefor
    • F15B2211/705—Output members, e.g. hydraulic motors or cylinders or control therefor characterised by the type of output members or actuators
    • F15B2211/7051—Linear output members
    • F15B2211/7057—Linear output members being of the telescopic type
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F15—FLUID-PRESSURE ACTUATORS; HYDRAULICS OR PNEUMATICS IN GENERAL
    • F15B—SYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL; FLUID-PRESSURE ACTUATORS, e.g. SERVOMOTORS; DETAILS OF FLUID-PRESSURE SYSTEMS, NOT OTHERWISE PROVIDED FOR
    • F15B2211/00—Circuits for servomotor systems
    • F15B2211/70—Output members, e.g. hydraulic motors or cylinders or control therefor
    • F15B2211/72—Output members, e.g. hydraulic motors or cylinders or control therefor having locking means

Definitions

  • the present invention relates to a locking device for a crane telescope, for example for a telescopic boom or a telescopic tower of a mobile crane, by means of which the individual telescopic sections can be releasably locked with one another and for the purpose of telescoping with a telescoping cylinder of the crane telescope.
  • Such locking devices are also referred to as locking heads if they are arranged in their entirety at the movable end of the telescoping cylinder.
  • the locking mechanisms of known telescoping systems are hydraulically supplied with the hydraulic fluid necessary for the actuation via an inner passage through the telescoping cylinder. More recent solutions, at least in part, do without the supply by means of such a feedthrough, but instead take the necessary hydraulic fluid from a cylinder chamber of the telescoping cylinder. However, the valves and other control elements of the locking mechanism required for this are no longer accessible in most operative positions in such solutions when installed.
  • the object of the present invention is to remedy this problem and to enable the cylinder lock to be released even if the control electronics fail.
  • the locking device according to the invention which can be used for example in a telescopic boom or a telescopic tower of a mobile crane, has at least one, in particular two, hydraulic cylinders, which is/are assigned to a cylinder lock.
  • the locking device according to the invention can also have a telescopic locking mechanism which, for example, interacts with the cylinder lock, ie is controlled together, or acts separately from the cylinder lock and is also controlled separately.
  • a telescopic section lock can also have at least one, in particular two, hydraulic cylinders in order to actuate the lock between two telescopic sections of the crane telescope.
  • the control device can therefore also be responsible for supplying the at least one telescopic locking hydraulic cylinder and for this purpose can be in hydraulic contact both with the telescoping cylinder of the crane telescope and with the at least one telescopic locking hydraulic cylinder. While using the telescopic locking mechanism, individual telescopic sections are locked to one another in an axial position and also again can be unlocked from each other, it is the task of a cylinder lock to lock and unlock the telescoping cylinder of the crane telescope for the purpose of pushing the individual telescopic sections out and back in with the respective telescopic section.
  • the locking device has a hydraulic control device which takes the hydraulic fluid required for actuation from a cylinder chamber of the telescoping cylinder, feeds it to the hydraulic cylinders in the desired manner and from there returns it to the telescoping cylinder.
  • the control device has a valve which, when activated, i.e. even when the control electronics/actuation is intact, blocks a hydraulic connection between the extraction point on the telescoping cylinder and the hydraulic cylinder(s) of the cylinder lock. If the control electronics/control are defective, this valve automatically falls back into its non-activated basic position, so to speak, and thus opens this connection. Since the hydraulic cylinder(s) of the cylinder lock is/are connected to a cylinder space of the telescoping cylinder, the cylinder lock can be released or unlocked by the hydraulic cylinder(s) of the cylinder lock being pressed together with the corresponding cylinder space of the telescoping cylinder.
  • the invention accordingly provides emergency operation for the cylinder lock, which is initiated fully automatically, so to speak, by a failure of the control electronics/actuation and the valve falling back into its open rest position associated therewith.
  • control device has a return, via which hydraulic fluid from the telescopic section locking hydraulic cylinders and/or the cylinder locking hydraulic cylinders into the cylinder chamber of the Telescoping cylinder can be returned, and wherein the valve releases the return in a direction opposite to the return.
  • the return flow designed for returning the hydraulic fluid back into the telescoping cylinder is used in emergency operation to bring hydraulic fluid in the opposite direction from the telescoping cylinder into the hydraulic cylinder of the cylinder lock in order to ultimately release it.
  • this is only possible when the valve is in its open rest position.
  • the return comprises at least one check valve and a bypass that bypasses the at least one check valve and is opened by the valve that is open in the non-actuated rest state.
  • the bypass disables the at least one check valve, so to speak, as soon as it is opened by the valve returning to the idle state, thus enabling the hydraulic fluid to flow from the telescoping cylinder via the return line to the hydraulic cylinder of the cylinder lock.
  • the return in particular the bypass, can have an additional pressure sequence valve in addition to the valve, which releases the return in the opposite direction or opens the bypass only above a defined pressure.
  • the cylinder lock can be actuated with high pressure in the telescoping cylinder. At lower pressure in the telescoping cylinder it can perform its actual function, namely telescoping. As a result, the locking device can be brought into a position that is favorable for inspection or repair.
  • the return has a pressure accumulator, in particular a low-pressure accumulator, which receives the hydraulic fluid from the telescopic section locking hydraulic cylinder and/or the cylinder locking hydraulic cylinder before it is returned to the telescoping cylinder.
  • a pressure accumulator in particular a low-pressure accumulator, which receives the hydraulic fluid from the telescopic section locking hydraulic cylinder and/or the cylinder locking hydraulic cylinder before it is returned to the telescoping cylinder.
  • This pressure accumulator thus serves as an intermediate reservoir for the hydraulic fluid to be returned, which can only be returned to the telescoping cylinder later in certain working states of the telescoping cylinder and the associated pressure conditions.
  • control device can have a supply line, in particular a supply line separate from the return line, via which the hydraulic fluid from the telescoping cylinder is supplied to the telescopic section hydraulic cylinder and/or the cylinder locking hydraulic cylinder.
  • a supply line in particular a supply line separate from the return line, via which the hydraulic fluid from the telescoping cylinder is supplied to the telescopic section hydraulic cylinder and/or the cylinder locking hydraulic cylinder.
  • the hydraulic cylinders of the locking device are therefore fed exclusively via the flow, while the return serves exclusively to return the hydraulic fluid to the telescoping cylinder.
  • the feed can have a pressure accumulator, in particular a high-pressure accumulator, which receives the hydraulic fluid from the telescoping cylinder before it is fed to the telescopic section locking hydraulic cylinder and/or to the cylinder locking hydraulic cylinder.
  • the high-pressure accumulator is filled with hydraulic fluid as soon as high pressure prevails in the telescoping cylinder and can discharge this pressurized hydraulic fluid to actuate the cylinder lock or the telescopic section lock on their hydraulic cylinder.
  • a further aspect of the present invention relates to a crane telescopic cylinder, in particular for telescoping a boom or tower, with a first cylinder part, which has a fastening section designed for fastening the telescoping cylinder to a base of a crane telescope, and with a second fastening section relative to the first Cylinder part movable cylinder part, which has a crane telescopic locking device in one of the embodiments described above.
  • the locking device according to the invention can therefore be moved together with the movable cylinder part of the telescoping cylinder within the crane telescope, in particular to an inspection or repair position.
  • control device can be in fluidic contact with the annular space of the telescoping cylinder on the piston rod side. If it is the piston rod of the telescoping cylinder that is permanently connected to the base section of the crane telescope, the annular space of the telescoping cylinder on the piston rod side is pressurized when the cylinder lock is unlocked in emergency operation, so that the telescoping cylinder is retracted into an inspection or repair position after unlocking.
  • the figure 1 shows schematically a preferred embodiment of the crane telescope locking device according to the invention.
  • This includes the Hydraulic cylinder 5, which is provided for actuating a (not shown) locking of the telescopic sections 1, 2 and 3 of the telescope 4 with one another.
  • the locking device also includes a hydraulic cylinder 7, which can be coupled indirectly to one of the telescopic sections 1, 2 via interventions.
  • the corresponding telescopic section 1, 2 is in turn firmly coupled to the extendable and retractable part 19 of the telescoping cylinder 6 and can be telescoped out or in together with this and relative to the base section 3.
  • the control device 8 provided for actuating the hydraulic cylinders 5 and 7 is hydraulically connected both to the hydraulic cylinders 5 and 7 and to the annular space 20 of the telescoping cylinder 6 on the piston rod side, takes the hydraulic fluid required for actuating the hydraulic cylinders 5 and 7 from the annular space 20 and also guides it back there again.
  • the hydraulic fluid is taken from the high-pressure accumulator 16 and conducted via the two appropriately switched two-way valves 21 and 22 in the desired manner to the cylinder chamber of the hydraulic cylinder 5 and 7, respectively.
  • the two-way valves 21 and 22 in the unactuated state of rest, ie also at Connect the cylinder chamber of the hydraulic cylinder 7 to the return line 10 if the control electronics/actuator failed or are defective.
  • valves 21 and 22 In the event of a failure of the control electronics/activation for the control device 8 and its valves 9, 21, 22, these valves assume their non-actuated rest position, with the valves 21 and 22 connecting the cylinder chamber of the hydraulic cylinder 7 to the return 10 and the valve 9 to the bypass 12 opens.
  • the movable cylinder part 19 is coupled to one of the telescopic sections 1 or 2 via the hydraulic cylinder 7 at the time of the damage and is also in a position in which access to the control device 8 on the movable cylinder part 19 is not possible, the cylinder chamber of the hydraulic cylinder 7 thereby printed and the cylinder lock can be released by the annular space 20 is printed, which in the in the figure 1 shown "emergency position" of the valves 9, 21 and 22 with the hydraulic cylinder 7 is in hydraulic communication. Starting from the annular space 20 , the path to the hydraulic cylinder 7 via the flow 15 is blocked for the hydraulic fluid by the valves 21 and 22 . The same applies to the branch of the return line 10 that is blocked by means of the blocking valves 11.
  • the bypass 12 is opened by the valve 9 that is in the rest position. In order to actuate the hydraulic cylinder 7, only a sufficiently high pressure has to be applied so that the pressure sequence valve 13 opens. If the pressure is lower, the bypass 12 is also blocked by the pressure sequence valve 13 . In this case, only the hydraulic cylinder 6 is retracted, while the hydraulic cylinder 7 of the cylinder lock is not activated.
  • the cylinder lock and thus the coupling of the movable cylinder part 19 of the telescoping cylinder 6 to one of the telescoping sections 1.2 is released by pressing the annular space 20, whereupon the telescoping cylinder 6 is retracted to an inspection or repair position.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Physics & Mathematics (AREA)
  • Fluid Mechanics (AREA)
  • General Engineering & Computer Science (AREA)
  • Actuator (AREA)
  • Jib Cranes (AREA)

Description

Die vorliegende Erfindung betrifft eine Verriegelungsvorrichtung für ein Kranteleskop, beispielsweise für einen Teleskopausleger oder einen Teleskopturm eines Mobilkrans, mittels welcher die einzelnen Teleskopschüsse untereinander und zum Zwecke des Teleskopierens mit einem Teleskopierzylinder des Kranteleskops lösbar verriegelt werden können. Solche Verriegelungsvorrichtungen werden auch als Verriegelungskopf bezeichnet, sofern sie in ihrer Gesamtheit am verfahrbaren Ende des Teleskopierzylinders angeordnet sind.The present invention relates to a locking device for a crane telescope, for example for a telescopic boom or a telescopic tower of a mobile crane, by means of which the individual telescopic sections can be releasably locked with one another and for the purpose of telescoping with a telescoping cylinder of the crane telescope. Such locking devices are also referred to as locking heads if they are arranged in their entirety at the movable end of the telescoping cylinder.

Die Verriegelungsmechanismen bekannter Teleskopiersysteme, wie sie beispielsweise in der EP 0 943 580 B1 , der EP 3 138 805 A1 , der CN 104 773 653 B oder der EP 2 210 853 A2 beschrieben werden, werden hydraulisch über eine innere Durchführung durch den Teleskopierzylinder mit dem für die Betätigung notwendigen Hydraulikfluid versorgt. Neuere Lösungen verzichten zumindest teilweise auf die Versorgung mittels einer solcher Durchführung, sondern entnehmen das notwendige Hydraulikfluid einem Zylinderraum des Teleskopierzylinders. Die hierfür notwendigen Ventile und andere Steuerorgane der Verriegelungsmechanik sind bei solchen Lösungen im eingebauten Zustand in den meisten operativen Stellungen jedoch nicht mehr zugänglich. Dies führt dazu, dass bei einer Störung, etwa dem Ausfall der Steuerelektronik oder anderer elektrischer Komponenten der Verriegelungsmechanik, die Zylinderverriegelung nicht mehr betätigt werden kann. Sollte sich das Kranteleskop, etwa der Teleskopausleger darüber hinaus in einer ungünstigen Position befinden, ist eine Bergung mit erheblichem Aufwand verbunden.The locking mechanisms of known telescoping systems, such as those in EP 0 943 580 B1 , the EP 3 138 805 A1 , the CN 104 773 653 B or the EP 2 210 853 A2 are described, are hydraulically supplied with the hydraulic fluid necessary for the actuation via an inner passage through the telescoping cylinder. More recent solutions, at least in part, do without the supply by means of such a feedthrough, but instead take the necessary hydraulic fluid from a cylinder chamber of the telescoping cylinder. However, the valves and other control elements of the locking mechanism required for this are no longer accessible in most operative positions in such solutions when installed. This means that in the event of a fault, such as failure of the control electronics or other electrical components of the locking mechanism, the cylinder lock can no longer be actuated. If the crane telescope, such as the telescopic boom, is also in an unfavorable position, recovery involves considerable effort.

Die Aufgabe der vorliegenden Erfindung ist es, diesem Problem abzuhelfen und ein Lösen der Zylinderverriegelung selbst bei einem Ausfall der Steuerelektronik zu ermöglichen.The object of the present invention is to remedy this problem and to enable the cylinder lock to be released even if the control electronics fail.

Diese Aufgabe wird durch den Gegenstand des unabhängigen Patentanspruchs 1 gelöst. Die Unteransprüche definieren dabei bevorzugte Ausführungsformen der vorliegenden Erfindung.This object is solved by the subject matter of independent patent claim 1. The dependent claims define preferred embodiments of the present invention.

Die Kranteleskop-Verriegelungsvorrichtung gemäß der vorliegenden Erfindung umfasst

  • zumindest einen zum lösbaren Aneinanderkoppeln eines Telekopierzylinders mit einem Teleskopschuss ausgestalteten Zylinderverriegelungs-Hydraulikzylinder; und
  • eine mit einem Zylinderraum eines Teleskopierzylinders des Kranteleskops und mit dem zumindest einen Zylinderverriegelungs-Hydraulikzylinder hydraulisch in Kontakt stehende Steuerungseinrichtung, wobei die Steuerungseinrichtung ein im unbetätigten Ruhezustand offenes und somit eine fluidische Verbindung zwischen dem Zylinderraum des Teleskopierzylinders und dem zumindest einen Zylinderverriegelungs-Hydraulikzylinder freigebendes Ventil umfasst.
The crane telescope locking device according to the present invention comprises
  • at least one cylinder locking hydraulic cylinder configured to releasably couple a telescoping cylinder to a telescoping section; and
  • a control device which is in hydraulic contact with a cylinder chamber of a telescoping cylinder of the crane telescope and with the at least one cylinder locking hydraulic cylinder, wherein the control device comprises a valve which is open in the non-actuated idle state and thus releases a fluidic connection between the cylinder chamber of the telescoping cylinder and the at least one cylinder locking hydraulic cylinder .

Mit anderen Worten weist die erfindungsgemäße Verriegelungsvorrichtung, welche beispielsweise bei einem Teleskopausleger oder einem Teleskopturm eines Mobilkrans eingesetzt werden kann, zumindest einen, insbesondere zwei Hydraulikzylinder auf, welche(r) einer Zylinderverriegelung zugeordnet ist/sind. Zusätzlich zur Zylinderverriegelung kann die erfindungsgemäße Verriegelungsvorrichtung auch eine Teleskopschussverriegelung aufweisen, welche beispielsweise mit der Zylinderverriegelung zusammenwirkt, also gemeinsam angesteuert wird, oder aber separat von der Zylinderverriegelung agiert und auch separat angesteuert wird. Eine Teleskopschussverriegelung kann ebenso zumindest einen, insbesondere zwei Hydraulikzylinder aufweisen, um die Verriegelung zwischen zwei Teleskopschüssen des Kranteleskops zu betätigen. Die Steuerungseinrichtung kann demnach auch für die Versorgung des zumindest einen Teleskopschussverriegelungs-Hydraulikzylinders zuständig sein und hierfür sowohl mit dem Teleskopierzylinder des Kranteleskops als auch mit dem zumindest einen Teleskopschussverriegelungs-Hydraulikzylinder hydraulisch in Kontakt stehen. Während mittels der Teleskopschussverriegelung einzelne Teleskopschüsse untereinander in einer axialen Position zueinander verriegelt und auch wieder voneinander entriegelt werden können, ist es die Aufgabe einer Zylinderverriegelung, den Teleskopierzylinder des Kranteleskops zum Zwecke des Aus- und auch Wiedereinschiebens der einzelnen Teleskopschüsse mit dem jeweiligen Teleskopschuss zu verriegeln und auch wieder zu entriegeln. Zur Betätigung dieser Hydraulikzylinder weist die Verriegelungsvorrichtung eine hydraulische Steuerungseinrichtung auf, die das zur Betätigung notwendige Hydraulikfluid einem Zylinderraum des Teleskopierzylinders entnimmt, den Hydraulikzylindern in gewünschter Weise zuführt und von dort auch wieder in den Teleskopierzylinder zurückführt.In other words, the locking device according to the invention, which can be used for example in a telescopic boom or a telescopic tower of a mobile crane, has at least one, in particular two, hydraulic cylinders, which is/are assigned to a cylinder lock. In addition to the cylinder lock, the locking device according to the invention can also have a telescopic locking mechanism which, for example, interacts with the cylinder lock, ie is controlled together, or acts separately from the cylinder lock and is also controlled separately. A telescopic section lock can also have at least one, in particular two, hydraulic cylinders in order to actuate the lock between two telescopic sections of the crane telescope. The control device can therefore also be responsible for supplying the at least one telescopic locking hydraulic cylinder and for this purpose can be in hydraulic contact both with the telescoping cylinder of the crane telescope and with the at least one telescopic locking hydraulic cylinder. While using the telescopic locking mechanism, individual telescopic sections are locked to one another in an axial position and also again can be unlocked from each other, it is the task of a cylinder lock to lock and unlock the telescoping cylinder of the crane telescope for the purpose of pushing the individual telescopic sections out and back in with the respective telescopic section. To actuate these hydraulic cylinders, the locking device has a hydraulic control device which takes the hydraulic fluid required for actuation from a cylinder chamber of the telescoping cylinder, feeds it to the hydraulic cylinders in the desired manner and from there returns it to the telescoping cylinder.

Zur Überwindung der oben angesprochenen Problematik weist die Steuerungseinrichtung ein Ventil auf, welches im aktivierten Zustand, also auch bei intakter Steuerelektronik/Ansteuerung eine hydraulische Verbindung zwischen der Entnahmestelle am Teleskopierzylinder und dem oder den Hydraulikzylinder(n) der Zylinderverriegelung sperrt. Bei defekter Steuerelektronik/Ansteuerung fällt dieses Ventil sozusagen automatisch in seine nicht aktivierte Grundstellung zurück und öffnet somit diese Verbindung. Da der oder die Hydraulikzylinder der Zylinderverriegelung nun mit einem Zylinderraum des Teleskopierzylinders in Verbindung steht/stehen, kann die Zylinderverriegelung dadurch gelöst bzw. entriegelt werden, indem der oder die Hydraulikzylinder der Zylinderverriegelung zusammen mit dem entsprechenden Zylinderraum des Teleskopierzylinders bedruckt wird/werden.To overcome the problems mentioned above, the control device has a valve which, when activated, i.e. even when the control electronics/actuation is intact, blocks a hydraulic connection between the extraction point on the telescoping cylinder and the hydraulic cylinder(s) of the cylinder lock. If the control electronics/control are defective, this valve automatically falls back into its non-activated basic position, so to speak, and thus opens this connection. Since the hydraulic cylinder(s) of the cylinder lock is/are connected to a cylinder space of the telescoping cylinder, the cylinder lock can be released or unlocked by the hydraulic cylinder(s) of the cylinder lock being pressed together with the corresponding cylinder space of the telescoping cylinder.

Die Erfindung stellt demnach einen Notbetrieb für die Zylinderverriegelung bereit, der durch einen Ausfall der Steuerelektronik/Ansteuerung und ein damit verbundenes Zurückfallen des Ventils in seine offene Ruhestellung sozusagen vollautomatisch eingeleitet wird.The invention accordingly provides emergency operation for the cylinder lock, which is initiated fully automatically, so to speak, by a failure of the control electronics/actuation and the valve falling back into its open rest position associated therewith.

In einer Ausführungsform der vorliegenden Erfindung weist die Steuerungseinrichtung einen Rücklauf auf, über welchen Hydraulikfluid aus den Teleskopschussverriegelungs-Hydraulikzylindern und/oder den Zylinderverriegelungs-Hydraulikzylindern in den Zylinderraum des Teleskopierzylinders rückgeführt werden kann, und wobei das Ventil den Rücklauf in einer der Rückführung entgegengesetzten Richtung freigibt.In one embodiment of the present invention, the control device has a return, via which hydraulic fluid from the telescopic section locking hydraulic cylinders and/or the cylinder locking hydraulic cylinders into the cylinder chamber of the Telescoping cylinder can be returned, and wherein the valve releases the return in a direction opposite to the return.

Anders ausgedrückt wird der für die Rückführung des Hydraulikfluids zurück in den Teleskopierzylinder ausgestaltete Rücklauf im Notbetrieb dazu genutzt, Hydraulikfluid in der entgegengesetzten Richtung aus dem Teleskopierzylinder in den Hydraulikzylinder der Zylinderverriegelung zu verbringen, um diese letztendlich zu lösen. Dies ist jedoch erst dann möglich, wenn sich das Ventil in seiner offenen Ruheposition befindet.In other words, the return flow designed for returning the hydraulic fluid back into the telescoping cylinder is used in emergency operation to bring hydraulic fluid in the opposite direction from the telescoping cylinder into the hydraulic cylinder of the cylinder lock in order to ultimately release it. However, this is only possible when the valve is in its open rest position.

In einer spezielleren Ausführungsform umfasst der Rücklauf zumindest ein Sperrventil und einen das zumindest eine Sperrventil umgehenden Bypass, welcher durch das im unbetätigten Ruhezustand geöffnete Ventil geöffnet wird.In a more specific embodiment, the return comprises at least one check valve and a bypass that bypasses the at least one check valve and is opened by the valve that is open in the non-actuated rest state.

Während es die Aufgabe des zumindest einen Sperrventils ist, eine Rückführung des Hydraulikfluids aus den Hydraulikzylindern der Zylinderverriegelung oder auch der Teleskopverriegelung zurück in den Teleskopierzylinder zu ermöglichen, ein Rückströmen des Hydraulikfluids jedoch zu verhindern, setzt der Bypass das zumindest eine Sperrventil sozusagen außer Kraft, sobald er durch das in den Ruhezustand zurückfallende Ventil geöffnet wird und es dem Hydraulikfluid somit ermöglicht, vom Teleskopierzylinder über den Rücklauf zum Hydraulikzylinder der Zylinderverriegelung zu strömen.While the task of the at least one check valve is to allow the hydraulic fluid to flow back from the hydraulic cylinders of the cylinder lock or the telescopic lock back into the telescoping cylinder, but to prevent the hydraulic fluid from flowing back, the bypass disables the at least one check valve, so to speak, as soon as it is opened by the valve returning to the idle state, thus enabling the hydraulic fluid to flow from the telescoping cylinder via the return line to the hydraulic cylinder of the cylinder lock.

Ferner kann der Rücklauf, insbesondere der Bypass, neben dem Ventil ein zusätzliches Druckzuschaltventil aufweisen, welches den Rücklauf erst ab einem definierten Druck in der entgegengesetzten Richtung freigibt beziehungsweise den Bypass öffnet.Furthermore, the return, in particular the bypass, can have an additional pressure sequence valve in addition to the valve, which releases the return in the opposite direction or opens the bypass only above a defined pressure.

Dadurch wird erreicht, dass der Entriegelungsvorgang der Zylinderverriegelung nur ausgelöst wird, wenn ein bestimmter Druck im Teleskopierzylinder überschritten wird. Somit kann im Schadensfall mit einem hohen Druck im Teleskopierzylinder die Zylinderverriegelung betätigt werden. Bei geringerem Druck im Teleskopierzylinder kann dieser seine eigentliche Funktion wahrnehmen, nämlich das Teleskopieren. Dadurch kann die Verriegelungsvorrichtung in eine für eine Inspektion oder Reparatur günstige Position gebracht werden.This ensures that the unlocking process of the cylinder lock is only triggered when a certain pressure in the telescoping cylinder is exceeded. Thus, in the event of damage, the cylinder lock can be actuated with high pressure in the telescoping cylinder. At lower pressure in the telescoping cylinder it can perform its actual function, namely telescoping. As a result, the locking device can be brought into a position that is favorable for inspection or repair.

In einer weiteren Ausführungsform weist der Rücklauf einen Druckspeicher auf, insbesondere einen Niederdruckspeicher, welcher das Hydraulikfluid aus dem Teleskopschussverriegelungs-Hydraulikzylinder und/oder dem Zylinderverriegelungs-Hydraulikzylinder vor dessen Rückführung in den Teleskopierzylinder aufnimmt.In a further embodiment, the return has a pressure accumulator, in particular a low-pressure accumulator, which receives the hydraulic fluid from the telescopic section locking hydraulic cylinder and/or the cylinder locking hydraulic cylinder before it is returned to the telescoping cylinder.

Dieser Druckspeicher dient also als Zwischenreservoir für das rückzuführende Hydraulikfluid, welches bei bestimmten Arbeitszuständen des Teleskopierzylinders und den damit einhergehenden Druckverhältnissen erst später in den Teleskopierzylinder zurückgeführt werden kann.This pressure accumulator thus serves as an intermediate reservoir for the hydraulic fluid to be returned, which can only be returned to the telescoping cylinder later in certain working states of the telescoping cylinder and the associated pressure conditions.

Ferner kann die Steuerungseinrichtung einen Vorlauf aufweisen, insbesondere einen vom Rücklauf getrennten Vorlauf, über welchen das Hydraulikfluid aus dem Teleskopierzylinder dem Teleskopschuss-Hydraulikzylinder und/oder dem Zylinderverriegelungs-Hydraulikzylinder zugeführt wird. Im normalen Betrieb werden die Hydraulikzylinder der Verriegelungsvorrichtung also ausschließlich über den Vorlauf gespeist, während der Rücklauf ausschließlich dem Rückführen des Hydraulikfluids zum Teleskopierzylinder hin dient.Furthermore, the control device can have a supply line, in particular a supply line separate from the return line, via which the hydraulic fluid from the telescoping cylinder is supplied to the telescopic section hydraulic cylinder and/or the cylinder locking hydraulic cylinder. In normal operation, the hydraulic cylinders of the locking device are therefore fed exclusively via the flow, while the return serves exclusively to return the hydraulic fluid to the telescoping cylinder.

Im Speziellen kann der Vorlauf dabei einen Druckspeicher, insbesondere einen Hochdruckspeicher aufweisen, welcher das Hydraulikfluid aus dem Teleskopierzylinder vor der Zuführung an den Teleskopschussverriegelungs-Hydraulikzylinder und/oder an den Zylinderverriegelungs-Hydraulikzylinder aufnimmt. Der Hochdruckspeicher wird dabei mit Hydraulikfluid gefüllt, sobald im Teleskopierzylinder hoher Druck vorherrscht, und kann dieses unter Druck stehende Hydraulikfluid zur Betätigung der Zylinderverriegelung oder der Teleskopschussverriegelung an deren Hydraulikzylinder abführen.In particular, the feed can have a pressure accumulator, in particular a high-pressure accumulator, which receives the hydraulic fluid from the telescoping cylinder before it is fed to the telescopic section locking hydraulic cylinder and/or to the cylinder locking hydraulic cylinder. The high-pressure accumulator is filled with hydraulic fluid as soon as high pressure prevails in the telescoping cylinder and can discharge this pressurized hydraulic fluid to actuate the cylinder lock or the telescopic section lock on their hydraulic cylinder.

Während die voranstehend beschriebene erfindungsgemäße Lösung bei jeglichen mittels Teleskopierzylindern betätigten Kranteleskopen Einsatz finden kann, ist insbesondere ein Einsatz bei einem Kran-Teleskopausleger oder Kran-Teleskopturm vorgesehen, insbesondere bei Mobilkranen.While the above-described solution according to the invention can be used in any telescopic crane actuated by means of telescoping cylinders, use in a telescopic crane boom or telescopic crane tower is envisaged, in particular in mobile cranes.

Ein weiterer Aspekt der vorliegenden Erfindung betrifft einen Kran-Teleskopierzylinder, insbesondere zum Teleskopieren eines Auslegers oder Turms, mit einem ersten Zylinderteil, der einen zur Befestigung des Teleskopierzylinders an einer Basis eines Kran-Teleskops ausgestalteten Befestigungsabschnitt ausweist, und mit einem zweiten, relativ zum ersten Zylinderteil beweglichen Zylinderteil, der eine Kranteleskop-Verriegelungsvorrichtung in einer der voranstehend beschriebenen Ausführungsformen aufweist.A further aspect of the present invention relates to a crane telescopic cylinder, in particular for telescoping a boom or tower, with a first cylinder part, which has a fastening section designed for fastening the telescoping cylinder to a base of a crane telescope, and with a second fastening section relative to the first Cylinder part movable cylinder part, which has a crane telescopic locking device in one of the embodiments described above.

Die erfindungsgemäße Verriegelungsvorrichtung kann also zusammen mit dem beweglichen Zylinderteil des Teleskopierzylinders innerhalb des Kran-Teleskops verfahren werden, insbesondere zu einer Inspektions- oder Reparaturposition.The locking device according to the invention can therefore be moved together with the movable cylinder part of the telescoping cylinder within the crane telescope, in particular to an inspection or repair position.

Ferner kann die Steuerungseinrichtung mit dem kolbenstangenseitigen Ringraum des Teleskopierzylinders in fluidischem Kontakt stehen. Sofern es die Kolbenstange des Teleskopierzylinders ist, welche ortsfest mit dem Basisschuss des Kran-Teleskops verbunden ist, wird beim Entriegeln der Zylinderverriegelung im Notbetrieb der kolbenstangenseitige Ringraum des Teleskopierzylinders bedruckt, so dass der Teleskopierzylinder nach der Entriegelung in eine Inspektions- oder Reparaturposition eingefahren wird.Furthermore, the control device can be in fluidic contact with the annular space of the telescoping cylinder on the piston rod side. If it is the piston rod of the telescoping cylinder that is permanently connected to the base section of the crane telescope, the annular space of the telescoping cylinder on the piston rod side is pressurized when the cylinder lock is unlocked in emergency operation, so that the telescoping cylinder is retracted into an inspection or repair position after unlocking.

Eine bevorzugte Ausführungsform der vorliegenden Erfindung wird im Folgenden unter Zuhilfenahme der beiliegenden Figur näher erläutert. Sie kann alle hierin beschriebenen Merkmale einzeln sowie in jedweder sinnvollen Kombination umfassen.A preferred embodiment of the present invention is explained in more detail below with the aid of the attached figure. It can include all of the features described herein individually and in any meaningful combination.

Die Figur 1 zeigt schematisch eine bevorzugte Ausführungsform der erfindungsgemäßen Kranteleskop-Verriegelungsvorrichtung. Diese umfasst den Hydraulikzylinder 5, welcher zur Betätigung einer (nicht gezeigten) Verriegelung der Teleskopschüsse 1, 2 und 3 des Teleskops 4 untereinander vorgesehen ist. Daneben umfasst die Verriegelungsvorrichtung auch einen Hydraulikzylinder 7, welcher indirekt über Eingriffe an einen der Teleskopschüsse 1, 2 gekoppelt werden kann. Somit ist der entsprechende Teleskopschuss 1, 2 wiederum fest an den aus- und einfahrbaren Teil 19 des Teleskopierzylinders 6 gekoppelt und kann zusammen mit diesem und relativ zum Basisschuss 3 aus- beziehungsweise einteleskopiert werden. Beim Ein- und Austeleskopieren bewegt sich der bewegliche Teil 19 des Teleskopierzylinders 6 relativ zur Kolbenstange 17, welche über die Schnittstelle 18 fest mit dem Basisschuss 3 verbunden ist. An dieser Stelle sei anzumerken, dass die Anordnung der Teleskopschüsse 1, 2 und 3 und der Hydraulikzylinder 5 und 7 rein schematisch gezeigt ist und die für die letztendlichen Kopplungsvorgänge notwendigen Eingriffe eine zusätzliche, nicht gezeigte Mechanik zwischen den Hydraulikzylindern 5 und 7 einerseits und den Teleskopschüssen 1, 2 und 3 andererseits umfassen können.the figure 1 shows schematically a preferred embodiment of the crane telescope locking device according to the invention. This includes the Hydraulic cylinder 5, which is provided for actuating a (not shown) locking of the telescopic sections 1, 2 and 3 of the telescope 4 with one another. In addition, the locking device also includes a hydraulic cylinder 7, which can be coupled indirectly to one of the telescopic sections 1, 2 via interventions. Thus, the corresponding telescopic section 1, 2 is in turn firmly coupled to the extendable and retractable part 19 of the telescoping cylinder 6 and can be telescoped out or in together with this and relative to the base section 3. When telescoping in and out, the movable part 19 of the telescoping cylinder 6 moves relative to the piston rod 17 which is firmly connected to the base section 3 via the interface 18 . At this point it should be noted that the arrangement of the telescopic sections 1, 2 and 3 and the hydraulic cylinders 5 and 7 is shown purely schematically and the interventions required for the final coupling processes require an additional mechanism (not shown) between the hydraulic cylinders 5 and 7 on the one hand and the telescopic sections 1, 2 and 3 on the other hand.

Die zur Betätigung der Hydraulikzylinder 5 und 7 vorgesehene Steuereinrichtung 8 ist sowohl mit den Hydraulikzylindern 5 und 7 als auch mit dem kolbenstangenseitigen Ringraum 20 des Teleskopierzylinders 6 hydraulisch verbunden, entnimmt das zur Betätigung der Hydraulikzylinder 5 und 7 notwendige Hydraulikfluid dem Ringraum 20 und führt dieses auch wieder dorthin zurück.The control device 8 provided for actuating the hydraulic cylinders 5 and 7 is hydraulically connected both to the hydraulic cylinders 5 and 7 and to the annular space 20 of the telescoping cylinder 6 on the piston rod side, takes the hydraulic fluid required for actuating the hydraulic cylinders 5 and 7 from the annular space 20 and also guides it back there again.

Bei ausreichend hohem Druck im Ringraum 20 wird Hydraulikfluid über den Vorlauf 15 in den Hochdruckspeicher 16 verbracht, während der Rücklauf 10 samt Bypass 12 mittels der Sperrventile 11 und dem im ordnungsgemäßen Betrieb stehts geschlossenen Ventil 9 für das aus dem Ringraum 20 stammende Hydraulikfluid versperrt ist.When the pressure in the annular space 20 is sufficiently high, hydraulic fluid is fed into the high-pressure accumulator 16 via the feed line 15, while the return line 10 together with the bypass 12 is blocked for the hydraulic fluid originating from the annular space 20 by means of the check valves 11 and the valve 9, which is always closed during normal operation.

Zur Betätigung der Hydraulikzylinder 5 und 7 wird das Hydraulikfluid aus dem Hochdruckspeicher 16 entnommen und über die beiden entsprechend geschalteten Zwei-Wege-Ventile 21 und 22 in gewünschter Weise zum Zylinderraum des Hydraulikzylinders 5 beziehungsweise 7 geleitet. An dieser Stelle sei anzumerken, dass die Zwei-Wege-Ventile 21 und 22 im unbetätigten Ruhezustand, also auch bei ausgefallener oder defekter Steuerelektronik/Ansteuerung den Zylinderraum des Hydraulikzylinders 7 mit dem Rücklauf 10 verbinden.To actuate the hydraulic cylinders 5 and 7, the hydraulic fluid is taken from the high-pressure accumulator 16 and conducted via the two appropriately switched two-way valves 21 and 22 in the desired manner to the cylinder chamber of the hydraulic cylinder 5 and 7, respectively. At this point it should be noted that the two-way valves 21 and 22 in the unactuated state of rest, ie also at Connect the cylinder chamber of the hydraulic cylinder 7 to the return line 10 if the control electronics/actuator failed or are defective.

Sobald Hydraulikfluid aus den Zylinderräumen der Hydraulikzylinder 5 oder 7 abgeführt werden soll, wird dieses über die entsprechend geschalteten Zwei-Wege-Ventile 21 und 22 in den Rücklauf 10 geleitet und über die in dieser Richtung öffnenden Sperrventile 11 in den Ringraum 20. Der Bypass 12 ist hier wiederum durch das Ventil 9 verschlossen. Gleiches gilt für den Vorlauf 15, der ein in Richtung des Ringraums 20 sperrendes (nicht bezeichnetes) Sperrventil aufweist.As soon as hydraulic fluid is to be discharged from the cylinder chambers of the hydraulic cylinders 5 or 7, this is routed via the appropriately switched two-way valves 21 and 22 into the return 10 and via the check valves 11, which open in this direction, into the annular chamber 20. The bypass 12 is here again closed by the valve 9. The same applies to the flow 15, which has a blocking valve (not designated) in the direction of the annular space 20.

Im Falle eines Ausfalls der Steuerungselektronik/Ansteuerung für die Steuerungseinrichtung 8 und deren Ventile 9, 21, 22 nehmen diese Ventile ihre unbetätigte Ruhestellung ein, wobei die Ventile 21 und 22 den Zylinderraum des Hydraulikzylinders 7 mit dem Rücklauf 10 verbinden und das Ventil 9 den Bypass 12 öffnet. Falls der bewegliche Zylinderteil 19 zum Schadenszeitpunkt über den Hydraulikzylinder 7 an einen der Teleskopschüsse 1 oder 2 gekoppelt ist und sich zudem in einer Position befindet, in welcher kein Zugriff auf die sich am beweglichen Zylinderteil 19 befindende Steuerungseinrichtung 8 möglich ist, kann der Zylinderraum des Hydraulikzylinders 7 dadurch bedruckt und die Zylinderverriegelung gelöst werden, indem der Ringraum 20 bedruckt wird, welcher in der in der Figur 1 gezeigten "Notbetriebsstellung" der Ventile 9, 21 und 22 mit dem Hydraulikzylinder 7 in hydraulischer Verbindung steht. Ausgehend vom Ringraum 20 ist dem Hydraulikfluid der Weg zum Hydraulikzylinder 7 über den Vorlauf 15 durch die Ventile 21 und 22 versperrt. Gleiches gilt für den mittels der Sperrventile 11 gesperrten Strang des Rücklaufs 10. Der Bypass 12 hingegen ist durch das sich in der Ruhestellung befindliche Ventil 9 geöffnet. Um den Hydraulikzylinder 7 zu betätigen, muss lediglich ein ausreichend hoher Druck aufgebracht werden, so dass das Druckzuschaltventil 13 öffnet. Bei geringerem Druck ist auch der Bypass 12 durch das Druckzuschaltventil 13 gesperrt. In diesem Fall wird lediglich der Hydraulikzylinder 6 eingefahren, der Hydraulikzylinder 7 der Zylinderverriegelung hingegen nicht aktiviert.In the event of a failure of the control electronics/activation for the control device 8 and its valves 9, 21, 22, these valves assume their non-actuated rest position, with the valves 21 and 22 connecting the cylinder chamber of the hydraulic cylinder 7 to the return 10 and the valve 9 to the bypass 12 opens. If the movable cylinder part 19 is coupled to one of the telescopic sections 1 or 2 via the hydraulic cylinder 7 at the time of the damage and is also in a position in which access to the control device 8 on the movable cylinder part 19 is not possible, the cylinder chamber of the hydraulic cylinder 7 thereby printed and the cylinder lock can be released by the annular space 20 is printed, which in the in the figure 1 shown "emergency position" of the valves 9, 21 and 22 with the hydraulic cylinder 7 is in hydraulic communication. Starting from the annular space 20 , the path to the hydraulic cylinder 7 via the flow 15 is blocked for the hydraulic fluid by the valves 21 and 22 . The same applies to the branch of the return line 10 that is blocked by means of the blocking valves 11. The bypass 12, on the other hand, is opened by the valve 9 that is in the rest position. In order to actuate the hydraulic cylinder 7, only a sufficiently high pressure has to be applied so that the pressure sequence valve 13 opens. If the pressure is lower, the bypass 12 is also blocked by the pressure sequence valve 13 . In this case, only the hydraulic cylinder 6 is retracted, while the hydraulic cylinder 7 of the cylinder lock is not activated.

Im gezeigten Fall wird durch Bedrucken des Ringraums 20 die Zylinderverriegelung und somit die Koppelung des beweglichen Zylinderteils 19 des Teleskopierzylinders 6 mit einem der Teleskopschüsse 1,2 gelöst, woraufhin der Teleskopierzylinder 6 bis zu einer Inspektions- oder Reparaturstellung eingefahren wird.In the case shown, the cylinder lock and thus the coupling of the movable cylinder part 19 of the telescoping cylinder 6 to one of the telescoping sections 1.2 is released by pressing the annular space 20, whereupon the telescoping cylinder 6 is retracted to an inspection or repair position.

Claims (10)

  1. Crane telescope locking device having
    - at least one cylinder locking hydraulic cylinder (7) designed to detachably couple a telescopic cylinder (6) to a telescopic section (1, 2);
    characterised in that the crane telescope locking device comprises a control device (8) in hydraulic contact with a cylinder chamber (20) of a telescopic cylinder (6) of the crane telescope (4) and for controlling the at least one cylinder locking hydraulic cylinder (7); wherein
    the control device (8) comprises a valve (9) which is open in the unactuated idle state and thus releases a fluidic connection between the cylinder chamber (20) of the telescopic cylinder (6) and the at least one cylinder locking hydraulic cylinder (7).
  2. Crane telescope locking device according to claim 1, wherein the control device (8) has a return flow (10) via which hydraulic fluid is returned from the cylinder locking hydraulic cylinder (7) into the telescopic cylinder (6), and the open valve (9) releases the return flow (10) in a direction opposite to the return flow.
  3. Crane telescope locking device according to claim 2, wherein the return flow (10) comprises at least one stop valve (11) and a bypass (12) bypassing the at least one stop valve (11), which bypass is opened by the valve (9) which is open in the non-actuated idle state.
  4. Crane telescope locking device according to one of claims 2 or 3, wherein the return flow (10), in particular the bypass (12), additionally has a pressure switching valve (13) which only releases the return flow (10) in the opposite direction or opens the bypass (12) when it reaches a defined pressure.
  5. Crane telescope locking device according to one of claims 2 to 4, wherein the return flow (10) has a pressure accumulator (14) which receives the hydraulic fluid from the cylinder locking hydraulic cylinder (7) before its return into the telescope cylinder (6).
  6. Crane telescope locking device according to one of claims 1 to 5, wherein the control device (8) has a feed line (15) via which the hydraulic fluid from the telescopic cylinder (6) is supplied to the telescope section locking hydraulic cylinder (5) and/or the cylinder locking hydraulic cylinder (7).
  7. Crane telescope locking device according to claim 6, wherein the feed line (15) has a pressure accumulator (16) which receives the hydraulic fluid from the telescopic cylinder (6) before it is supplied to the cylinder locking hydraulic cylinder (7).
  8. Crane telescope locking device according to one of claims 1 to 7, which is designed to detachably couple telescopic sections (1, 2, 3) to each other and to a telescopic cylinder (6) of a crane telescopic boom or crane telescopic tower.
  9. Crane telescopic cylinder (6) having a first cylinder part (17) which has a mounting portion (18) adapted to mount the telescopic cylinder (6) on a base (3) of a crane telescope (4), and having a second cylinder part (19) which is moveable relative to the first cylinder part (17) and which has a crane telescope locking device according to one of claims 1 to 8.
  10. Crane telescopic cylinder according to claim 9, wherein the control device (8) is in fluidic contact with the piston rod-side annulus (20) of the telescopic cylinder (6).
EP19181090.2A 2018-07-20 2019-06-19 Crane telescope locking device Active EP3597584B1 (en)

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DE102018117630.9A DE102018117630B4 (en) 2018-07-20 2018-07-20 Crane telescope locking device

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* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN113646251B (en) * 2019-04-04 2024-04-09 株式会社多田野 Working machine
CN111056445B (en) * 2020-02-28 2021-04-30 徐州建机工程机械有限公司 Safe tower crane locking control device and control method
JP2022167829A (en) 2021-04-23 2022-11-04 タダノ デマグ ゲーエムベーハー Vehicle crane having telescopic jib having fixing and lock unit
DE102022113302B4 (en) 2022-05-25 2023-12-14 Liebherr-Werk Ehingen Gmbh Hydraulic system for supplying pressure to a hydraulic actuator

Family Cites Families (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4327533A (en) * 1980-08-13 1982-05-04 Kidde, Inc. Crane boom extending, retracting and cooperative latching arrangement
DE19811813B4 (en) 1998-03-18 2005-11-24 Grove U.S. LLC (n.d.Ges.d.Staates Delaware) Lateral boom interlock
DE102009006292B4 (en) * 2009-01-27 2015-03-26 Manitowoc Crane Group France Sas Locking system for telescopic crane jib with sliding locking unit
AT12645U1 (en) * 2011-03-10 2012-09-15 Palfinger Ag CRANE BOOM
JP6223071B2 (en) * 2013-08-30 2017-11-01 株式会社タダノ Boom telescopic mechanism of crane equipment
JP5882977B2 (en) * 2013-11-26 2016-03-09 株式会社タダノ Crane boom telescopic device
US10479658B2 (en) * 2014-05-20 2019-11-19 Xuzhou Heavy Machinery Co, Ltd. Telescopic device of single-cylinder latch type and crane
CN104591012B (en) * 2014-12-29 2017-02-08 三一汽车起重机械有限公司 Hydraulic control system for single cylinder pin type telescopic boom and engineering machinery
JP6476996B2 (en) * 2015-02-24 2019-03-06 株式会社タダノ Telescopic boom telescopic device
CN104773653B (en) * 2015-04-08 2017-03-15 徐州重型机械有限公司 A kind of crane single cylinder bolt telescopic control method, system and contilever structure
CN108698806B (en) * 2016-03-03 2020-01-21 株式会社多田野 Telescopic mechanism
DE202018102111U1 (en) * 2018-04-17 2018-04-24 Montanhydraulik Gmbh locking unit

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DE102018117630B4 (en) 2020-07-09
EP3597584A1 (en) 2020-01-22

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