EP3597584A1 - Crane telescope locking device - Google Patents

Crane telescope locking device Download PDF

Info

Publication number
EP3597584A1
EP3597584A1 EP19181090.2A EP19181090A EP3597584A1 EP 3597584 A1 EP3597584 A1 EP 3597584A1 EP 19181090 A EP19181090 A EP 19181090A EP 3597584 A1 EP3597584 A1 EP 3597584A1
Authority
EP
European Patent Office
Prior art keywords
cylinder
telescopic
crane
locking
hydraulic
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Granted
Application number
EP19181090.2A
Other languages
German (de)
French (fr)
Other versions
EP3597584B1 (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
Original Assignee
Manitowoc Crane Group France SAS
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Manitowoc Crane Group France SAS filed Critical Manitowoc Crane Group France SAS
Publication of EP3597584A1 publication Critical patent/EP3597584A1/en
Application granted granted Critical
Publication of EP3597584B1 publication Critical patent/EP3597584B1/en
Active legal-status Critical Current
Anticipated expiration legal-status Critical

Links

Images

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 to one another and for the purpose of telescoping with a telescopic 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 telescopic cylinder.
  • the locking mechanisms of known telescopic systems are supplied hydraulically with the hydraulic fluid necessary for the actuation via an internal passage through the telescopic cylinder.
  • Newer solutions at least partially dispense with the supply by means of such an implementation, but take the necessary hydraulic fluid from a cylinder space of the telescopic cylinder.
  • the necessary valves and other control elements of the locking mechanism are no longer accessible in most operational positions when such solutions are installed. This means that in the event of a malfunction, such as a 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 is associated with considerable effort.
  • 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 shot lock, which interacts, for example, with the cylinder lock, that is to say it is controlled together, or else acts separately from the cylinder lock and is also controlled separately.
  • a telescopic shot lock can also have at least one, in particular two hydraulic cylinders, in order to actuate the lock between two telescopic shots of the crane telescope.
  • control device can also be responsible for supplying the at least one telescopic shot locking hydraulic cylinder and for this purpose can be hydraulically in contact both with the telescopic cylinder of the crane telescope and with the at least one telescopic shot locking hydraulic cylinder.
  • telescopic shot lock While using the telescopic shot lock, individual telescopic shots 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 telescopic cylinder of the crane telescope for the purpose of extending and reinserting the individual telescopic sections with the respective telescopic section.
  • the locking device has a hydraulic control device which takes the hydraulic fluid required for actuation from a cylinder space of the telescopic cylinder, feeds them to the hydraulic cylinders in the desired manner and from there also returns them to the telescopic cylinder.
  • the control device has a valve which, in the activated state, that is to say also in the case of intact control electronics / control, blocks a hydraulic connection between the removal point on the telescopic cylinder and the hydraulic cylinder (s) of the cylinder lock. If the control electronics / control is defective, this valve automatically returns to its non-activated basic position, and thus opens this connection. Since the hydraulic cylinder or cylinders of the cylinder lock is / are now connected to a cylinder space of the telescopic cylinder, the cylinder lock can be released or unlocked by printing the hydraulic cylinder or cylinders of the cylinder lock together with the corresponding cylinder space of the telescopic cylinder.
  • the invention accordingly provides an emergency operation for the cylinder lock, which is initiated fully automatically, so to speak, by a failure of the control electronics / control and an associated return of the valve to its open rest position.
  • control device has a return line, via which hydraulic fluid from the telescopic shot locking hydraulic cylinders and / or the cylinder locking hydraulic cylinders into the cylinder space of the Telescopic cylinder can be returned, and wherein the valve releases the return in a direction opposite to the return.
  • the return line configured for returning the hydraulic fluid back into the telescopic cylinder is used in emergency operation to transfer hydraulic fluid in the opposite direction from the telescopic cylinder into the hydraulic cylinder of the cylinder lock in order to finally release it.
  • this is only possible when the valve is in its open rest position.
  • the return comprises at least one shut-off valve and a bypass which bypasses the at least one shut-off valve and which is opened by the valve which is opened in the unactuated idle state.
  • the bypass overrides the at least one shut-off valve, so to speak, as soon as it is opened by the valve falling back into the idle state and thus enables the hydraulic fluid to flow from the telescopic cylinder via the return line to the hydraulic cylinder of the cylinder lock.
  • the return in particular the bypass, can have an additional pressure connection valve in addition to the valve, which only releases the return from a defined pressure in the opposite direction or opens the bypass.
  • the cylinder lock can be actuated with a high pressure in the telescopic cylinder.
  • the telescopic cylinder can perform its actual function, namely telescoping.
  • the locking device can be brought into a position which is favorable for an inspection or repair.
  • the return line has a pressure accumulator, in particular a low-pressure accumulator, which receives the hydraulic fluid from the telescopic shot locking hydraulic cylinder and / or the cylinder locking hydraulic cylinder before it is returned to the telescopic cylinder.
  • a pressure accumulator in particular a low-pressure accumulator, which receives the hydraulic fluid from the telescopic shot locking hydraulic cylinder and / or the cylinder locking hydraulic cylinder before it is returned to the telescopic cylinder.
  • This pressure accumulator thus serves as an intermediate reservoir for the hydraulic fluid to be returned, which can only be returned to the telescopic cylinder later in certain working states of the telescopic cylinder and the pressure conditions associated therewith.
  • control device can have a flow, in particular a flow separated from the return, via which the hydraulic fluid from the telescopic cylinder is fed to the telescopic shot 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 telescopic cylinder.
  • the flow can have a pressure accumulator, in particular a high-pressure accumulator, which receives the hydraulic fluid from the telescopic cylinder before being fed to the telescopic shot 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 telescopic cylinder and can discharge this hydraulic fluid under pressure to actuate the cylinder lock or the telescopic shot lock on its hydraulic cylinder.
  • Another 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 telescopic cylinder to a base of a crane telescope, and with a second, 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 thus be moved together with the movable cylinder part of the telescopic 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 telescopic cylinder on the piston rod side. If it is the piston rod of the telescopic cylinder that is connected to the base section of the crane telescope, the ring space on the piston rod side of the telescopic cylinder is printed when the cylinder lock is unlocked in emergency operation, so that the telescopic cylinder is moved 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 each other.
  • the locking device also comprises 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 telescopic cylinder 6 and can be telescoped out and in together with the latter 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 on the piston rod side of the telescopic cylinder 6, 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 removed from the high-pressure accumulator 16 and conducted in the desired manner to the cylinder space of the hydraulic cylinders 5 and 7 via the two two-way valves 21 and 22 which are switched accordingly.
  • the two-way valves 21 and 22 are in the unactuated idle state, that is also when failed or defective control electronics / control connect the cylinder chamber of the hydraulic cylinder 7 with the return 10.
  • valves 21 and 22 In the event of a failure of the control electronics / control for the control device 8 and its valves 9, 21, 22, these valves assume their unactuated rest position, the valves 21 and 22 connecting the cylinder chamber of the hydraulic cylinder 7 to the return 10 and the valve 9 the bypass 12 opens.
  • the cylinder space of the hydraulic cylinder can 7 thereby printed and the cylinder lock can be released by printing the annular space 20, which in the in Figure 1 shown "emergency operating position" of the valves 9, 21 and 22 with the hydraulic cylinder 7 is in hydraulic connection.
  • the path to the hydraulic cylinder 7 via the flow 15 through the valves 21 and 22 is blocked for the hydraulic fluid. The same applies to the line of the return 10 blocked by means of the blocking valves 11.
  • the bypass 12 is opened by the valve 9 which 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 connection valve 13 opens. At a lower pressure, the bypass 12 is also blocked by the pressure connection 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 telescopic cylinder 6 to one of the telescopic sections 1, 2 are released by printing on the annular space 20, whereupon the telescopic cylinder 6 is retracted up to an inspection or repair position.

Landscapes

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

Abstract

Die Erfindung betrifft eine Kranteleskop-Verriegelungsvorrichtung umfassend eine mit einem Teleskopierzylinder (6) eines Kranteleskops (4) und zur Ansteuerung mit zumindest einem Zylinderverriegelungs-Hydraulikzylinder (7) hydraulisch in Kontakt stehende Steuerungseinrichtung (8) mit einem im unbetätigten Ruhezustand offenen und somit eine fluidische Verbindung zwischen dem Teleskopierzylinder (6) und dem zumindest einen Zylinderverriegelungs-Hydraulikzylinder (7) freigebenden Ventil (9). Die Erfindung betrifft ferner einen Kran-Teleskopierzylinder (6) mit einer solchen Kranteleskop-Verriegelungsvorrichtung.The invention relates to a crane telescopic locking device comprising a control device (8) which is hydraulically in contact with a telescopic cylinder (6) of a crane telescope (4) and for control with at least one cylinder locking hydraulic cylinder (7), with a control device (8) which is open in the unactuated idle state and thus a fluidic one Connection between the telescopic cylinder (6) and the valve (9) releasing at least one cylinder locking hydraulic cylinder (7). The invention further relates to a crane telescopic cylinder (6) with such a crane telescopic locking device.

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 to one another and for the purpose of telescoping with a telescopic 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 telescopic cylinder.

Die Verriegelungsmechanismen bekannter Teleskopiersysteme, wie sie beispielsweise in der EP 0 943 580 B1 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 telescopic systems, such as those in the EP 0 943 580 B1 are described, are supplied hydraulically with the hydraulic fluid necessary for the actuation via an internal passage through the telescopic cylinder. Newer solutions at least partially dispense with the supply by means of such an implementation, but take the necessary hydraulic fluid from a cylinder space of the telescopic cylinder. The necessary valves and other control elements of the locking mechanism are no longer accessible in most operational positions when such solutions are installed. This means that in the event of a malfunction, such as a 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 is associated with 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 achieved by the subject matter of independent claim 1. The subclaims 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 Teleskopierzylinder 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 Teleskopierzylinder und dem zumindest einen Zylinderverriegelungs-Hydraulikzylinder freigebendes Ventil umfasst.
The crane telescopic locking device according to the present invention comprises
  • at least one cylinder locking hydraulic cylinder designed for releasably coupling a facsimile cylinder with a telescopic shot; and
  • a control device which is hydraulically in contact with a telescopic cylinder of the crane telescope and with the at least one cylinder locking hydraulic cylinder, the control device comprising a valve which is open in the unactuated idle state and thus releases a fluidic connection between the telescopic 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, welcher 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 shot lock, which interacts, for example, with the cylinder lock, that is to say it is controlled together, or else acts separately from the cylinder lock and is also controlled separately. A telescopic shot lock can also have at least one, in particular two hydraulic cylinders, in order to actuate the lock between two telescopic shots of the crane telescope. Accordingly, the control device can also be responsible for supplying the at least one telescopic shot locking hydraulic cylinder and for this purpose can be hydraulically in contact both with the telescopic cylinder of the crane telescope and with the at least one telescopic shot locking hydraulic cylinder. While using the telescopic shot lock, individual telescopic shots 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 telescopic cylinder of the crane telescope for the purpose of extending and reinserting the individual telescopic sections 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 space of the telescopic cylinder, feeds them to the hydraulic cylinders in the desired manner and from there also returns them to the telescopic 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, in the activated state, that is to say also in the case of intact control electronics / control, blocks a hydraulic connection between the removal point on the telescopic cylinder and the hydraulic cylinder (s) of the cylinder lock. If the control electronics / control is defective, this valve automatically returns to its non-activated basic position, and thus opens this connection. Since the hydraulic cylinder or cylinders of the cylinder lock is / are now connected to a cylinder space of the telescopic cylinder, the cylinder lock can be released or unlocked by printing the hydraulic cylinder or cylinders of the cylinder lock together with the corresponding cylinder space of the telescopic 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 an emergency operation for the cylinder lock, which is initiated fully automatically, so to speak, by a failure of the control electronics / control and an associated return of the valve to its open rest position.

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 line, via which hydraulic fluid from the telescopic shot locking hydraulic cylinders and / or the cylinder locking hydraulic cylinders into the cylinder space of the Telescopic 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 line configured for returning the hydraulic fluid back into the telescopic cylinder is used in emergency operation to transfer hydraulic fluid in the opposite direction from the telescopic cylinder into the hydraulic cylinder of the cylinder lock in order to finally 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 shut-off valve and a bypass which bypasses the at least one shut-off valve and which is opened by the valve which is opened in the unactuated idle 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 it is the task of the at least one shut-off valve to enable the hydraulic fluid to be returned from the hydraulic cylinders of the cylinder lock or the telescopic lock back to the telescopic cylinder, but to prevent the hydraulic fluid from flowing back, the bypass overrides the at least one shut-off valve, so to speak, as soon as it is opened by the valve falling back into the idle state and thus enables the hydraulic fluid to flow from the telescopic 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 connection valve in addition to the valve, which only releases the return from a defined pressure in the opposite direction or opens the bypass.

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 telescopic cylinder is exceeded. In the event of damage, the cylinder lock can be actuated with a high pressure in the telescopic cylinder. At lower pressure in the telescopic cylinder can perform its actual function, namely telescoping. As a result, the locking device can be brought into a position which is favorable for an 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 line has a pressure accumulator, in particular a low-pressure accumulator, which receives the hydraulic fluid from the telescopic shot locking hydraulic cylinder and / or the cylinder locking hydraulic cylinder before it is returned to the telescopic 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 telescopic cylinder later in certain working states of the telescopic cylinder and the pressure conditions associated therewith.

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 flow, in particular a flow separated from the return, via which the hydraulic fluid from the telescopic cylinder is fed to the telescopic shot 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 telescopic 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 flow can have a pressure accumulator, in particular a high-pressure accumulator, which receives the hydraulic fluid from the telescopic cylinder before being fed to the telescopic shot 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 telescopic cylinder and can discharge this hydraulic fluid under pressure to actuate the cylinder lock or the telescopic shot lock on its 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 solution according to the invention described above can be used with any crane telescopes actuated by means of telescopic cylinders, use in particular with a crane telescopic boom or crane telescopic tower is provided, in particular with 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.Another 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 telescopic cylinder to a base of a crane telescope, and with a second, 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 thus be moved together with the movable cylinder part of the telescopic 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 telescopic cylinder on the piston rod side. If it is the piston rod of the telescopic cylinder that is connected to the base section of the crane telescope, the ring space on the piston rod side of the telescopic cylinder is printed when the cylinder lock is unlocked in emergency operation, so that the telescopic cylinder is moved 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 each other. In addition, the locking device also comprises 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 telescopic cylinder 6 and can be telescoped out and in together with the latter and relative to the base section 3. When telescoping in and out, the movable part 19 of the telescopic 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 necessary for the final coupling processes include 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 on the piston rod side of the telescopic cylinder 6, 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.If the pressure in the annular space 20 is sufficiently high, hydraulic fluid is brought into the high-pressure accumulator 16 via the feed 15, while the return 10 together with the bypass 12 is blocked for the hydraulic fluid coming from the annular space 20 by means of the shut-off valves 11 and the valve 9, which is 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 removed from the high-pressure accumulator 16 and conducted in the desired manner to the cylinder space of the hydraulic cylinders 5 and 7 via the two two-way valves 21 and 22 which are switched accordingly. At this point, it should be noted that the two-way valves 21 and 22 are in the unactuated idle state, that is also when failed or defective control electronics / control connect the cylinder chamber of the hydraulic cylinder 7 with the return 10.

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 spaces of the hydraulic cylinders 5 or 7, this is conducted into the return 10 via the correspondingly switched two-way valves 21 and 22 and into the annular space 20 via the shut-off valves 11 opening in this direction. The bypass 12 is in turn closed by valve 9. The same applies to the flow 15, which has a shut-off valve (not designated) that blocks 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 / control for the control device 8 and its valves 9, 21, 22, these valves assume their unactuated rest position, the valves 21 and 22 connecting the cylinder chamber of the hydraulic cylinder 7 to the return 10 and the valve 9 the bypass 12 opens. If the movable cylinder part 19 is coupled via the hydraulic cylinder 7 to one of the telescopic sections 1 or 2 at the time of the damage and is also in a position in which access to the control device 8 located on the movable cylinder part 19 is not possible, the cylinder space of the hydraulic cylinder can 7 thereby printed and the cylinder lock can be released by printing the annular space 20, which in the in Figure 1 shown "emergency operating position" of the valves 9, 21 and 22 with the hydraulic cylinder 7 is in hydraulic connection. Starting from the annular space 20, the path to the hydraulic cylinder 7 via the flow 15 through the valves 21 and 22 is blocked for the hydraulic fluid. The same applies to the line of the return 10 blocked by means of the blocking valves 11. The bypass 12, on the other hand, is opened by the valve 9 which 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 connection valve 13 opens. At a lower pressure, the bypass 12 is also blocked by the pressure connection 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 telescopic cylinder 6 to one of the telescopic sections 1, 2 are released by printing on the annular space 20, whereupon the telescopic cylinder 6 is retracted up to an inspection or repair position.

Claims (10)

Kranteleskop-Verriegelungsvorrichtung mit - zumindest einem zum lösbaren Aneinanderkoppeln eines Telekopierzylinders (6) mit einem Teleskopschuss (1, 2) ausgestalteten Zylinderverriegelungs-Hydraulikzylinder (7); und - einer mit einem Teleskopierzylinder (6) des Kranteleskops (4) und zur Ansteuerung mit dem zumindest einen Zylinderverriegelungs-Hydraulikzylinder (7) hydraulisch in Kontakt stehenden Steuerungseinrichtung (8); dadurch gekennzeichnet, dass die Steuerungseinrichtung (8) ein im unbetätigten Ruhezustand offenes und somit eine fluidische Verbindung zwischen dem Teleskopierzylinder (6) und dem zumindest einen Zylinderverriegelungs-Hydraulikzylinder (7) freigebendes Ventil (9) umfasst.Crane telescope locking device with - At least one cylinder locking hydraulic cylinder (7) designed for detachably coupling a facsimile cylinder (6) with a telescopic section (1, 2); and - one with a telescopic cylinder (6) of the crane telescope (4) and for control with the at least one cylinder locking hydraulic cylinder (7) in hydraulic contact with the control device (8); characterized in that the control device (8) comprises a valve (9) which is open in the unactuated idle state and thus releases a fluidic connection between the telescopic cylinder (6) and the at least one cylinder locking hydraulic cylinder (7). Kranteleskop-Verriegelungsvorrichtung gemäß Anspruch 1, wobei die Steuerungseinrichtung (8) einen Rücklauf (10) aufweist, über welchen Hydraulikfluid aus dem Zylinderverriegelungs-Hydraulikzylinder (7) in den Teleskopierzylinder (6) rückgeführt wird, und das offene Ventil (9) den Rücklauf (10) in einer der Rückführung entgegengesetzten Richtung freigibt.Crane telescopic locking device according to claim 1, wherein the control device (8) has a return (10), via which hydraulic fluid from the cylinder locking hydraulic cylinder (7) is returned to the telescopic cylinder (6), and the open valve (9) the return ( 10) in a direction opposite to the return. Kranteleskop-Verriegelungsvorrichtung gemäß Anspruch 2, wobei der Rücklauf (10) zumindest ein Sperrventil (11) und einen das zumindest eine Sperrventil (11) umgehenden Bypass (12) umfasst, welcher durch das im unbetätigten Ruhezustand geöffnete Ventil (9) geöffnet wird.Crane telescope locking device according to claim 2, wherein the return line (10) comprises at least one shut-off valve (11) and a bypass (12) bypassing the at least one shut-off valve (11), which is opened by the valve (9) which is opened in the unactuated idle state. Kranteleskop-Verriegelungsvorrichtung gemäß einem der Ansprüche 2 oder 3, wobei der Rücklauf (10), insbesondere der Bypass (12) zusätzlich ein Druckzuschaltventil (13) aufweist, welches erst ab einem definierten Druck den Rücklauf (10) in der entgegengesetzten Richtung freigibt bzw. den Bypass (12) öffnet.Crane telescope locking device according to one of claims 2 or 3, wherein the return (10), in particular the bypass (12) additionally has a pressure connection valve (13), which only releases the return (10) in the opposite direction from a defined pressure or opens the bypass (12). Kranteleskop-Verriegelungsvorrichtung gemäß einem der Ansprüche 2 bis 4, wobei der Rücklauf (10) einen Druckspeicher (14) aufweist, welcher das Hydraulikfluid aus dem Zylinderverriegelungs-Hydraulikzylinder (7) vor dessen Rückführung in den Teleskopierzylinder (6) aufnimmt.Crane telescopic locking device according to one of claims 2 to 4, wherein the return (10) has a pressure accumulator (14) which receives the hydraulic fluid from the cylinder locking hydraulic cylinder (7) before it is returned to the telescopic cylinder (6). Kranteleskop-Verriegelungsvorrichtung gemäß einem der Ansprüche 1 bis 5, wobei die Steuerungseinrichtung (8) einen Vorlauf (15) aufweist, über welchen das Hydraulikfluid aus dem Teleskopierzylinder (6) dem Teleskopschussverriegelungs-Hydraulikzylinder (5) und/oder dem Zylinderverriegelungs-Hydraulikzylinder (7) zugeführt wird.Crane telescopic 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), the telescopic shot locking hydraulic cylinder (5) and / or the cylinder locking hydraulic cylinder (7 ) is supplied. Kranteleskop-Verriegelungsvorrichtung gemäß Anspruch 6, wobei der Vorlauf (15) einen Druckspeicher (16) aufweist, welcher das Hydraulikfluid aus dem Teleskopierzylinder (6) vor der Zuführung an den Zylinderverriegelungs-Hydraulikzylinder (7) aufnimmt.Crane telescopic locking device according to claim 6, wherein the flow (15) has a pressure accumulator (16) which receives the hydraulic fluid from the telescopic cylinder (6) before being fed to the cylinder locking hydraulic cylinder (7). Kranteleskop-Verriegelungsvorrichtung gemäß einem der Ansprüche 1 bis 7, die zum lösbaren Aneinanderkoppeln von Telekopschüssen (1, 2, 3) untereinander und mit einem Teleskopierzylinder (6) eines Kran-Teleskopauslegers oder Kran-Teleskopturms ausgestaltet ist.Crane telescope locking device according to one of claims 1 to 7, which is designed for releasably coupling telescopic shots (1, 2, 3) to one another and with a telescopic cylinder (6) of a crane telescopic boom or crane telescopic tower. Kran-Teleskopierzylinder (6) mit einem ersten Zylinderteil (17), der einen zur Befestigung des Teleskopierzylinders (6) an einer Basis (3) eines Kran-Teleskops (4) ausgestalteten Befestigungsabschnitt (18) aufweist, und mit einem zweiten, relativ zum ersten Zylinderteil (17) beweglichen Zylinderteil (19), der eine Kranteleskop-Verriegelungsvorrichtung gemäß einem der Ansprüche 1 bis 8 aufweist.Crane telescopic cylinder (6) with a first cylinder part (17), which has a fastening section (18) designed for fastening the telescopic cylinder (6) to a base (3) of a crane telescope (4), and with a second, relative to the first cylinder part (17) movable cylinder part (19) having a crane telescopic locking device according to one of claims 1 to 8. Kran-Teleskopierzylinder gemäß Anspruch 9, wobei die Steuerungseinrichtung (8) mit dem kolbenstangenseitigen Ringraum (20) des Teleskopierzylinders (6) in fluidischem Kontakt steht.Crane telescopic cylinder according to claim 9, wherein the control device (8) is in fluidic contact with the piston rod-side annular space (20) of the telescopic cylinder (6).
EP19181090.2A 2018-07-20 2019-06-19 Crane telescope locking device Active EP3597584B1 (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE102018117630.9A DE102018117630B4 (en) 2018-07-20 2018-07-20 Crane telescope locking device

Publications (2)

Publication Number Publication Date
EP3597584A1 true EP3597584A1 (en) 2020-01-22
EP3597584B1 EP3597584B1 (en) 2022-06-08

Family

ID=69005161

Family Applications (1)

Application Number Title Priority Date Filing Date
EP19181090.2A Active EP3597584B1 (en) 2018-07-20 2019-06-19 Crane telescope locking device

Country Status (3)

Country Link
US (1) US11629034B2 (en)
EP (1) EP3597584B1 (en)
DE (1) DE102018117630B4 (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN111056445A (en) * 2020-02-28 2020-04-24 徐州建机工程机械有限公司 Safe tower crane locking control device and control method

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2020204157A1 (en) * 2019-04-04 2020-10-08 株式会社タダノ Work machine
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

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0943580A2 (en) 1998-03-18 1999-09-22 Grove U.S. LLC Lateral jib locking device
EP2210853A2 (en) * 2009-01-27 2010-07-28 Manitowoc Crane Group France SAS Locking system for telescopic crane boom with displaceable locking unit
EP3138805A1 (en) * 2014-05-20 2017-03-08 Xuzhou Heavy Machinery Co., Ltd. Single-cylinder bolt stretching device and crane
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

Family Cites Families (8)

* 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
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
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
US10604386B2 (en) * 2016-03-03 2020-03-31 Tadano Ltd. Expansion/contraction mechanism
DE202018102111U1 (en) * 2018-04-17 2018-04-24 Montanhydraulik Gmbh locking unit

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0943580A2 (en) 1998-03-18 1999-09-22 Grove U.S. LLC Lateral jib locking device
EP2210853A2 (en) * 2009-01-27 2010-07-28 Manitowoc Crane Group France SAS Locking system for telescopic crane boom with displaceable locking unit
EP3138805A1 (en) * 2014-05-20 2017-03-08 Xuzhou Heavy Machinery Co., Ltd. Single-cylinder bolt stretching device and crane
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

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN111056445A (en) * 2020-02-28 2020-04-24 徐州建机工程机械有限公司 Safe tower crane locking control device and control method
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

Also Published As

Publication number Publication date
DE102018117630A1 (en) 2020-01-23
EP3597584B1 (en) 2022-06-08
US11629034B2 (en) 2023-04-18
US20200024111A1 (en) 2020-01-23
DE102018117630B4 (en) 2020-07-09

Similar Documents

Publication Publication Date Title
EP3597584B1 (en) Crane telescope locking device
EP1743979B1 (en) Hydraulic arrangement
EP2184252B1 (en) Braking device
EP3178997B1 (en) Ventileinheit für schnellwechsler sowie schnellwechselsystem
EP2294331B1 (en) Hydraulic valve device
DE2726165A1 (en) DEVICE FOR INCREASING THE EXTENSION SPEED OF THE PISTON ROD OF A LIFTING CYLINDER USING MEDIUM PRESSURE
DE2436942A1 (en) CONTROL DEVICE FOR A HYDRAULIC CLAMPING DEVICE
AT406072B (en) HYDRAULIC ACTUATOR ARRANGEMENT
AT410010B (en) HYDRAULIC ACTUATING ARRANGEMENT AND HYDRAULICALLY LOCKABLE CHECK VALVE
EP2698477B1 (en) Quick coupling, method for operating a quick coupling and quick coupling device
EP2514977B1 (en) Control bloc for a press
AT503408B1 (en) FLUID CYLINDER ARRANGEMENT
DE102014222326B4 (en) hydraulic arrangement
DE202008015191U1 (en) Schnellwechseleinrichtung
DE4202792C2 (en) Control for a working cylinder that can be locked on both sides and locked in one end position
DE4311275C2 (en) Sequence control or priority switching for a reversible plow with plow frame pivoting
DE4408386C2 (en) Hydraulically operated locking device for quick couplers on construction and work machines
DE102006034864B4 (en) Control system for a hydraulic system
DE202009006299U1 (en) Hydraulic system as well as mobile construction machine
DE102022113302B4 (en) Hydraulic system for supplying pressure to a hydraulic actuator
DE4210790C2 (en)
DE102013012528B4 (en) Pressure supply device
DE102020127479B3 (en) Quick coupler with a control device with a mechanically and hydraulically controllable valve
DE102016212306A1 (en) Intermediate block and compact axle with an intermediate block
DE2450330A1 (en) DOUBLE HYDRAULIC ACTUATOR

Legal Events

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

Free format text: ORIGINAL CODE: 0009012

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

Free format text: STATUS: THE APPLICATION HAS BEEN PUBLISHED

AK Designated contracting states

Kind code of ref document: A1

Designated state(s): AL AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HR HU IE IS IT LI LT LU LV MC MK MT NL NO PL PT RO RS SE SI SK SM TR

AX Request for extension of the european patent

Extension state: BA ME

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

Free format text: STATUS: REQUEST FOR EXAMINATION WAS MADE

17P Request for examination filed

Effective date: 20200608

RBV Designated contracting states (corrected)

Designated state(s): AL AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HR HU IE IS IT LI LT LU LV MC MK MT NL NO PL PT RO RS SE SI SK SM TR

GRAP Despatch of communication of intention to grant a patent

Free format text: ORIGINAL CODE: EPIDOSNIGR1

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

Free format text: STATUS: GRANT OF PATENT IS INTENDED

INTG Intention to grant announced

Effective date: 20220121

GRAS Grant fee paid

Free format text: ORIGINAL CODE: EPIDOSNIGR3

GRAA (expected) grant

Free format text: ORIGINAL CODE: 0009210

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

Free format text: STATUS: THE PATENT HAS BEEN GRANTED

AK Designated contracting states

Kind code of ref document: B1

Designated state(s): AL AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HR HU IE IS IT LI LT LU LV MC MK MT NL NO PL PT RO RS SE SI SK SM TR

REG Reference to a national code

Ref country code: AT

Ref legal event code: REF

Ref document number: 1496811

Country of ref document: AT

Kind code of ref document: T

Effective date: 20220615

Ref country code: CH

Ref legal event code: EP

REG Reference to a national code

Ref country code: DE

Ref legal event code: R096

Ref document number: 502019004551

Country of ref document: DE

REG Reference to a national code

Ref country code: IE

Ref legal event code: FG4D

Free format text: LANGUAGE OF EP DOCUMENT: GERMAN

REG Reference to a national code

Ref country code: LT

Ref legal event code: MG9D

REG Reference to a national code

Ref country code: NL

Ref legal event code: MP

Effective date: 20220608

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

Ref country code: SE

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

Effective date: 20220608

Ref country code: NO

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

Effective date: 20220908

Ref country code: LT

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

Effective date: 20220608

Ref country code: HR

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

Effective date: 20220608

Ref country code: GR

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

Effective date: 20220909

Ref country code: FI

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

Effective date: 20220608

Ref country code: ES

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

Effective date: 20220608

Ref country code: BG

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

Effective date: 20220908

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

Ref country code: RS

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

Effective date: 20220608

Ref country code: LV

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

Effective date: 20220608

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

Ref country code: NL

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

Effective date: 20220608

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

Ref country code: SM

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

Effective date: 20220608

Ref country code: SK

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

Effective date: 20220608

Ref country code: RO

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

Effective date: 20220608

Ref country code: PT

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

Effective date: 20221010

Ref country code: EE

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

Effective date: 20220608

Ref country code: CZ

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

Effective date: 20220608

REG Reference to a national code

Ref country code: CH

Ref legal event code: PL

REG Reference to a national code

Ref country code: BE

Ref legal event code: MM

Effective date: 20220630

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

Ref country code: PL

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

Effective date: 20220608

Ref country code: IS

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

Effective date: 20221008

REG Reference to a national code

Ref country code: DE

Ref legal event code: R097

Ref document number: 502019004551

Country of ref document: DE

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

Ref country code: MC

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

Effective date: 20220608

Ref country code: AL

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

Effective date: 20220608

PLBE No opposition filed within time limit

Free format text: ORIGINAL CODE: 0009261

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

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

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

Ref country code: LU

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

Effective date: 20220619

Ref country code: LI

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

Effective date: 20220630

Ref country code: IE

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

Effective date: 20220619

Ref country code: DK

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

Effective date: 20220608

Ref country code: CH

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

Effective date: 20220630

26N No opposition filed

Effective date: 20230310

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

Ref country code: SI

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

Effective date: 20220608

Ref country code: BE

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

Effective date: 20220630

P01 Opt-out of the competence of the unified patent court (upc) registered

Effective date: 20230515

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

Ref country code: FR

Payment date: 20230628

Year of fee payment: 5

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

Ref country code: IT

Payment date: 20230623

Year of fee payment: 5

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

Ref country code: MK

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

Effective date: 20220608

Ref country code: CY

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

Effective date: 20220608

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

Ref country code: HU

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

Effective date: 20190619

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

Ref country code: TR

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

Effective date: 20220608

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

Ref country code: GB

Payment date: 20240621

Year of fee payment: 6

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

Ref country code: DE

Payment date: 20240619

Year of fee payment: 6