EP3382103A2 - Rapid coupling - Google Patents

Abstract

The present invention relates to a quick coupler for coupling a tool such as excavator buckets, claw grippers or demolition tongs to a tool guide such as excavator handle or the like, with a coupler body having on opposite ends on the one hand a Ankuppelaufnahme for receiving a first locking part of a coupler part to be coupled and on the other hand a locking receptacle for Receiving a second locking part of the coupling part to be coupled, wherein at least the locking receptacle is associated with at least one movable locking part for locking the second locking part, wherein said locking element is manually operable via a arranged on the coupler body actuating mechanism. According to the invention, the locking element associated with the locking element and a movable, additional Sicherungslement that is associated with the Ankuppelaufnahme for securing the first locking member therein, actuated by the common drive shaft and each articulated via an actuating link on a rotatably connected to the common drive shaft rotary actuator part, so that the Verriegelungslement and the securing element by rotating the common drive shaft in a rotational direction to each other in opposite directions.

Description

The present invention relates to a quick coupler for coupling a tool such as excavator buckets, claw grippers or demolition tongs to a tool guide such as excavator handle or the like, with a coupler body having on opposite ends on the one hand a Ankuppelaufnahme for receiving a first locking part of a coupler part to be coupled and on the other hand a locking receptacle for Receiving a second locking part of the coupling part to be coupled, wherein at least the locking receptacle is associated with at least one movable locking part for locking the second locking part, wherein said locking element is manually operable via a arranged on the coupler body actuating mechanism.

On construction machines such as hydraulic excavators or articulated grabs such as wood handling machines or demolition equipment or similar material handling machines are often quick coupler for coupling various tools such as tedding spoons, claw grabs or demolition tongs on a bagger handle or similar tool guides such Knuckle boom used to use different tools without long changeover times can.

Such quick coupler can have as locking elements in particular two spaced apart locking axes on a coupling part, while the other coupling part, in particular the handlebar side coupling part may have a preferably hook-shaped coupling receptacle for hooking on a first of the two locking axes and a locking receptacle for locking on the second locking axis. After hooking the first locking axis in the Ankuppelaufnahme the two coupling parts can be pivoted to each other, wherein the seated in the Ankuppelaufnahme locking axis forms the axis of rotation, so that the second locking axis retracts into the locking receptacle or is pivoted into, where said second locking axis then by a locking element such as an extendable wedge can be locked, so that at the same time it is no longer possible to move the first locking axle from the Ankuppelaufnahme. For the operation of said locking element, a third-party actuated actuating actuator is provided, which may be designed, for example, as a hydraulic cylinder and is usually actuatable by hydraulic pressure from the device.

The said locking axes on the one coupling part can thereby be formed by locking bolts, which may extend in particular parallel to each other on the corresponding coupling part, but instead of such bolts but possibly other structural parts of the coupling part such as projecting lugs, stub axles, engagement stumps in the form of projections or Recesses, for example in the form of pockets can serve as a locking part, which are adapted to the Ankuppelaufnahme or the locking receptacle of the other coupling part.

Such quick couplers are also the subject of standards in terms of dimensions and locking parts, in order to ensure compatibility with the excavator handle used coupler half with various tools on which a coupler half is mounted, which may come from different manufacturers depending on the tool and as far as the stalk coupler half must be compatible so that the two coupler halves can move together and lock. Such standardization is carried out, for example, in the form of the so-called S-coupler or the S-standard, which stipulates the dimensions and arrangement of the locking elements and receiving jaws and was defined by the Swedish Maskinleverantörerna Institute and was last issued on 28.05.2010. This S-coupler has in the manner described above on one coupler half two parallel, spaced-apart cross bolt as locking parts, while the other coupler half has on opposite ends on the one hand a muzzle Ankoppelaufnahme and on the other hand, an L-shaped locking receptacle which closed by a pair of extendable locking bolt or to a then also U-shaped or mouth-shaped receptacle can be closed.

Furthermore, the font shows WO 2016/198638 A1 a quick coupler, in which the locking elements via rotary actuator parts of a drive shaft forth ago and are retractable, wherein to the said drive shaft, a hand tool for manually operating the quick coupler can be connected. In addition, a hydraulic rotary motor is connected to said drive shaft in order to actuate the drive shaft and thus the locking element also by motor.

Further examples of such quick couplers are from the documents EP 1 852 555 A2 . DE 20 2012 007 124 U1 . DE 20 2014 001 328 U1 known.

Modern variants of such quick couplers are often hydraulically actuated. The locking elements are associated with hydraulic actuators, for example in the form of hydraulic cylinders, by means of which the locking elements can be retracted and extended. Are there hydraulically actuated tools to couple, the coupler halves also have hydraulic clutches, the automatically collapse when swinging the two coupler halves together.

However, manually operable coupler halves are still needed, especially in smaller operations or for infrequently used machines for which fully hydraulic quick coupler systems are not worthwhile or too costly.

Such manually operable quick couplers usually have a control gear which is arranged on the coupler body, on which the said locking elements can be moved in and out or in another way between locking and unlocking position. By means of such adjusting the required actuating forces are reduced to ensure a simple manual operation. For example, a lever mechanism may be provided which can be actuated by a rotatable rotary actuator, so that a favorable manual operation can be achieved via the lever ratios. In this case, a wrench or a similar tool, as it is known in a comparable form for loosening and tightening the wheel nuts when changing the wheel on a motor vehicle, are releasably attached to said rotary actuator part, for example via a polygonal connector to actuate the rotary actuator. Such a control gear expediently also includes a spring that biases the locking element.

Due to the adjusting gear, however, it has hitherto been difficult to couple such a manually operable quick coupler to coupler halves on which hydraulic and / or energy circuit couplings are arranged, since the actuating gear and the coupler body surrounding the actuating mechanism would collide with such hydraulic or energy-circuit couplings. Usually such hydraulic or power circuit clutches are arranged centrally between the opposite locking parts, which are to be retracted into the Ankuppel- and locking receptacles, and thus lie exactly where the said actuating gear is arranged on the opposite coupler half. As a result, you can So far, such manually operable quick couplers are coupled only with coupler halves, which have no such hydraulic or power circuit clutches.

On this basis, the present invention has the object to provide an improved quick coupler of the type mentioned, which avoids the disadvantages of the prior art and further develops the latter in an advantageous manner. In particular, a secure and at the same time simple manual locking should be made possible with a compact design, even if the opposite coupler half has hydraulic or other energy-circuit couplings.

According to the invention, the stated object is achieved by a quick coupler according to claim 1. Preferred embodiments of the invention are the subject of the dependent claims.

It is therefore proposed, in addition to the locking elements, which are associated with the locking recess, and the receiving recess at least to assign a securing element to secure the locking member received therein, and to connect both elements, ie Verriegelungslement and securing element to the common drive shaft with only a rotational movement of the common drive shaft to lock and unlock both the Verriegelungsals and the Sicherungslemente can. According to the invention, the locking element associated with the locking element and a movable, additional Sicherungslement that is associated with the Ankuppelaufnahme for securing the first locking member therein, actuated by the common drive shaft and each articulated via an actuating link on a rotatably connected to the common drive shaft rotary actuator part, so that the Verriegelungslement and the securing element by rotating the common drive shaft in a rotational direction to each other in opposite directions. In particular, the locking element moves toward one side of the quick-release body in the locking receptacle provided there, while the fuse element moves towards the opposite side of the coupler body in the Ankuppelaufnahme provided there, when the common drive shaft is rotated in one direction. If the drive shaft is rotated in the opposite direction of rotation, the locking and securing elements move counter to each other in their respective unlocking position.

Advantageously, said drive shaft may extend transversely across the coupler body between the coupling receptacle and the latch receptacle, in particular in a direction perpendicular to the adjustment directions of the latching and securing elements, wherein a through-passage may advantageously be provided in a side wall of the coupler body through which passes the drive shaft may extend to an outside of the coupler body to be coupled there with a hand tool. Alternatively, the hand tool can be inserted through said passage recess to be coupled in said side cheek or within said side cheek to the drive shaft.

The coupling of the hand tool can basically be done in various ways. For example, the hand tool by means of a shaft-hub connection rotatably mounted on the drive shaft, so that the hand tool and the drive shaft extend approximately coaxially to each other. Alternatively, the hand tool and the drive shaft but can also be arranged offset from each other, for example by a pinion rotatably on the drive shaft and a pinion rotatably provided on the hand tool and can interlock in the sense of a spur gear. As an alternative or in addition to such a spur gear stage, a bevel gear stage can also be connected between the hand tool and the drive shaft on the pakker body in order to tilt or bend the axis of rotation of the hand tool relative to the axis of rotation of the drive shaft. At the same time by such a pinion or gear stage, a reduction or translation between hand tool and Drive shaft can be generated, which allows a particularly power-saving, leichtgängies operating the quick coupler.

In an advantageous embodiment of the invention, the additional securing element can be moved into the Ankuppelaufnahme obliquely and / or acute-angled to prevent the locking member located there form-fitting on slipping out of the Ankuppelaufnahme. In particular, said coupling receptacle can form a mouth-shaped blind groove with a groove longitudinal axis, which is open to one side of the coupler body, which faces away from the locking receptacle, wherein the Ankuppelaufnahme with its said groove longitudinal axis to a control axis of the fuse element and / or to a connection plane , which goes through both the Ankuppelaufnahme and through the locking receptacle, can extend at an acute angle inclined. Considering the approximately, for example, cuboid coupling body in a horizontally oriented position, said Ankuppelaufnahme may, for example, angled at an acute angle obliquely upwards and / or obliquely obliquely downwards inclined, the securing element substantially horizontally moved and can be partially moved into the Ankuppelaufnahme inside to block the entry and exit path for the associated locking part.

Advantageously, the Verriegelungslement can be moved substantially horizontally, when said cuboid coupling body is considered in a horizontal position. In this case, the locking element and the securing element can both be moved horizontally or along mutually substantially parallel axes, which is favorable for the operation by the common drive shaft and at the same time enables a compact, flat construction of the coupler.

Advantageously, the rotary adjusting parts, on which the locking part on the one hand and the securing element on the other hand are articulated on the already mentioned actuating link, on opposite sides of the Extend drive shaft and be arranged such that the actuating arm of the locking element and the securing element are overstretched during rotation of the drive shaft from the unlocking position to the locking position and each run over a dead center. By such a configuration in which the control arms are overstretched and a dead center is run over, the drive shaft can be safely held in the locking and unlocking position by approaching rotation stops the locking and securing elements, without requiring special, additional security measures, for example in the form of Locking bolts would be required.

In this case, the securing element on the one hand and the locking element on the other hand be connected in different ways to the rotational movement of the common drive shaft, in particular such that the securing element is substantially free of play, forcibly coupled to the rotation of the drive shaft, while the locking element a limited clearance against the rotational movement of the Drive shaft, for example, by providing a longitudinal groove or a slot, which can form a point of articulation of the actuating arm. This makes it possible to drive the locking element positively against impact against the Verriegelungslement or in the sense of a stop against the locking element, even if the actuating arm is overstretched when starting the locking position and moves over the dead center. Advantageously, the said clearance in this case a biasing device, for example in the form of a spring device, be assigned to drive the locking element in the contacting, abutting position on the locking part.

The said clearance is in this case relatively small and in each case so limited that the locking element, even if the clearance is utilized, the lock receptacle blocked sufficiently to prevent falling out of the locking element safely.

On the other hand, the additional securing element, which is associated with the Ankuppelaufnahme, positively convert the rotary drive shaft of the drive shaft without clearance implement. In particular, by the aforementioned inclination of the Ankuppelaufnahme the fuse element must not be driven to stop, but it may be sufficient to drive the said fuse sufficiently oblique in the Ankuppelaufnahme to obstruct the path for the locking part.

In order to ensure automated operation of the quick coupler, a monitoring device may be provided in the development of the invention, which comprises at least one rotary position sensor for detecting the rotational position of the drive shaft. In particular, the said rotary position sensor can be designed to detect the achievement of the locking rotational position of the drive shaft in order to be able to deliver a corresponding signal, which indicates the reaching of the locking position. The said rotary position sensor does not have to be assigned directly to the drive shaft, but can, for example, also detect the position of one of the rotary actuator parts, which are connected in a rotationally fixed manner to the drive shaft.

Advantageously, in addition to said rotational position sensor, the monitoring device also comprises two pick-up sensors, which are associated with the coupling receptacle on the one hand and the latch receptacle on the other, and respectively monitor the presence of the first latching part and the second latching part in the coupling receptacle or the latch receptacle.

By such a three-point monitoring can be reliably and automatically ensure that the quick coupler has actually received the mating piece to be coupled in a predetermined manner and securely locked.

It is also proposed to move the actuating gear for manual actuation of the at least one locking element from the collision area with the hydraulic or power circuit clutches on the dome part to be coupled and the coupler body in the area, the intended purpose of coupling to the said hydraulic or power circuit clutches of the counterpart when coupling lie comes out, so that the hydraulic or power circuit clutches can retract into the recessed area. According to the coupler body has in a central portion between its provided at opposite ends coupling and locking receptacles to be coupled to the coupling part down recess for receiving and / or retracting hydraulic connections of the coupler part to be coupled, wherein the actuating mechanism for manually actuating the at least one locking member in addition to said Recess, the recess is released. By such a recess in combination with an arrangement of the adjusting gear at the edge or next to said recess, the hydraulic connections can retract into said recess between edge arranged Kupplerstrukturteile and / or Stellgetriebeabschnitte and thus the Kupplerkorpus be driven without collision on the coupler part to be coupled. At the same time the quick coupler can continue to be used for hydraulic coupler solutions, as in this case said recess in the coupler body simply remains free, if no hydraulic or power circuit couplings are provided on the counterpart.

Said recess may in this case form a cup-shaped or trough-shaped depression in the underside of the coupler body, ie in the coupler body side which is driven onto the coupling part to be coupled when coupling, wherein said cup-shaped or trough-shaped depression is made sufficiently deep to accommodate the hydraulics - To record or power circuit clutches on the dome part to be coupled. In particular, the said recess can at the edge of stiffening and / or strength-increasing structure thickening and / or edge beads and / or adjusting gear sections of the manually operable Adjusted or enclosed actuating gear, wherein such structure thickening or edge beads may advantageously be provided on at least two or three edge sides of said recess.

In particular, said structural thickenings or edge thickenings may extend along the side edges of the coupler body, while the central region of the coupler body is recessed from such structural thickenings and / or may be formed by a flat, thin plate or a similarly thin structural sheet or part.

In an advantageous embodiment of the invention, the aforementioned adjusting gear sections can also be arranged at least partially within said edge-bordering structural thickenings and / or edge beads.

In an advantageous embodiment of the invention, said central recess may be at least partially formed as a through-hole, so that in the coupler body, a central through-hole is provided with a free visual axis therethrough. Said through-passage can pass centrally through the coupler body and extend from the underside of the coupler body, which is intended to be driven onto the counterpart or coupler part to be coupled, up to its upper side. By means of such a through hole, the coupler part possibly present on the coupler part which may be present remain accessible even when the coupler is coupled, from above or through the said passage recess. In addition, the quick coupler regardless of the height of possibly existing hydraulic couplings can be built very flat.

Said recess in the coupler body may vary in size, wherein it is dimensioned sufficiently large in each case to accommodate the present at the counterpart hydraulic or power circuit clutches. To even with differently positioned hydraulic or power circuit clutches a To ensure collision-free collision, said recess can advantageously in the transverse direction - ie transverse to the adjusting axis of the locking element and / or transversely to the plane of the coupling movement and / or parallel to the bolt-shaped locking parts of the coupling part to be coupled - a clear width of more than 50% or more than 66% of the width of the entire coupler body possess. In the longitudinal direction - ie approximately in the direction of the spacing of the two coupling and locking receptacles to each other - the recess can advantageously a clear width or length of at least more than 33% or more than 50% of the spacing of the coupling and locking receptacles, wherein also a length more than 66% of said spacing is possible. By such a sufficiently large sized recess a collision of the coupler body is avoided with the hydraulic connections on the counterpart even with unclean couplings movements.

The actuating mechanism laid next to said recess may, in an advantageous embodiment of the invention, comprise a rotatably mounted rotary actuator which, by turning over an actuating link, displaces the locking element with which the locking receptacle is closed or the locking part received therein is locked. Advantageously, a spring device can be coupled with said rotary actuator part, in particular in such a way that upon rotation of the rotary actuator part a dead center is run over and the rotary actuator part can be prestressed by the spring device into opposite end positions which can correspond to the locked and unlocked positions of the coupler. The spring device is more relaxed in both end positions of the rotary actuator than in the intermediate dead center position, so that the spring device can hold the actuating gear both in the unlocked position and in the locked position by spring force. In order to move from the unlocked position to the locked position or vice versa from the locked to the unlocked position, manually said spring force must be overcome.

Advantageously, the said spring means on the one hand and the actuating link on the other hand, which converts the rotational movement of the rotary actuator into an actuating movement of the locking element, be arranged on different or opposite sides of the locking part. As a result, a particularly slim design is achieved, so that said assembly comprising the rotary actuator, the actuating arm and the spring device can extend laterally along the coupler body and / or along said recess, without the assembly, the recess and the retractability of the hydraulic couplings in the Obstruct or restrict the area of the recess. Nevertheless, said assembly can be made relatively long or take advantage of a large part of the available length of the coupler body, whereby a favorable leverage and a simple design spring means can be provided.

The said spring device can advantageously act directly on said rotary actuator part and / or bias a clamping arm, which is hinged on the one hand articulated to said rotary actuator part and on the other hand slidably guided on the Kupplerkorpus. In particular, the spring means may be associated with said biasing link such that said biasing link is biased along its longitudinal direction and is being urged against the pincer body by the spring force. This Federkraftbeaufschlagte displacement movement of the tension control arm tries to turn the rotary actuator in one of its end positions.

Advantageously, the quick coupler may comprise two locking elements, which are associated with said locking receptacle and can lock a locking member received therein. Advantageously, each of said locking elements is a separate Stellgetriebebaugruppe each comprising a rotary actuator, associated with an articulated actuation link and a spring device, wherein said adjusting gear assemblies advantageously laterally to opposite Can extend edges of the coupler body and / or on opposite sides of the aforementioned recess.

The two Stellgetriebebaugruppen can be synchronized by a synchronization shaft, which connects the two Drehstellteile each other and synchronized in terms of their rotation. However, such a rotational synchronization of the two rotary actuator parts and thus the locking movement of the locking elements can also be achieved by the actuation tool to be applied, which can replace or have, for example, said synchronization shaft. For example, the hand tool can be inserted from one side into both rotary actuator parts, for example via a polygonal recess and / or a splined recess and / or an otherwise torque-transmitting recess in the two rotary actuator parts. The two adjusting gear assemblies can therefore also be synchronized by the hand tool to be used, so that even more installation space for the coupling movement is available when the operating tool is removed.

Alternatively, however, the two actuating gearing assemblies mentioned can also be actuated via separate actuating tools.

In an advantageous embodiment of the invention, the at least one rotary actuator can be positioned on the coupler body such that the axis of rotation of the rotary actuator is aligned with a recess which is provided in a side flange of the coupling part to be coupled, so that said axis of rotation of the rotary actuator in the contracted or coupled state is in a range bounded by side flanges of the coupler part to be coupled. In other words, the axis of rotation of the rotary actuator parts moves into an inner space between the side flanges of the coupler part to be coupled, whereby a particularly flat construction of the quick coupler is made possible.

Nevertheless, in order to be able to apply the actuating tool to said rotary actuator from the side, the rotary actuator is positioned so that its axis of rotation is aligned, in the coupled state, with a through-hole provided in said side flange of the coupling member to be coupled. The actuation tool to be applied can thus be inserted through the said passage recess in the side flange and brought into engagement with the rotary actuator part.

In an advantageous embodiment of the invention, said drive shaft can be operated not only manually by coupling a hand tool, but the quick coupler can include a drive or a foreign energy operable Stellaktor to rotate the drive shaft by means of external energy and thus the locking and securing element and extend to be able to.

The common drive shaft may for this purpose have a Stellaktoranschluss for connecting such a Stellaktors for rotating the drive shaft, wherein said Stellaktoranschluss can be provided, for example, on one of the aforementioned rotary actuator or on another rotary actuator which is rotatably connected to the drive shaft.

The named Stellaktor can basically be designed differently. In an advantageous embodiment of the invention, for example, a pressure medium cylinder may be provided, which is hydraulically or optionally also pneumatically actuated. Advantageously, such a Stellaktor may extend substantially parallel to a connection plane which passes through the locking recess and the Ankuppelaufnahme, said Stellaktor can be aligned with its longitudinal and / or effective axis advantageously substantially perpendicular to the longitudinal axis of the drive shaft.

Alternatively or in addition to such a pressure cylinder, the Stellaktor may also have an electric motor and / or an electric Stellaktor.

Fig. 1:

eine schematische Seitenansicht eines Schnellkupplers nach einer vorteilhaften Ausführung der Erfindung, der an einen Auslegerstiel eines Baggers angebaut ist und als Anbauwerkzeug einen Grablöffel ankuppelt,

Fig. 2:

eine perspektivische Darstellung des Schnellkupplers aus Fig. 1 in einer abgekuppelten Stellung, in der die beiden miteinander kuppelbaren Kupplungsteile kurz vor dem Einhaken am Hakenabschnitt gezeigt sind,

Fig. 3:

eine schematische Darstellung des elektrisch/hydraulischen Antriebsystems des Schnellkupplers aus den vorhergehenden Figuren nach einer vorteilhaften Ausführung der Erfindung,

Fig. 4:

eine perspektivische Darstellung des Schnellkupplers aus Fig. 3 schräg von unten, d.h. von der dem anzukuppelnden Kupplerteil zugewandten Seite her, die die ausfahrbaren Verriegelungselemente an der Verriegelungsaufnahme zeigen,

Fig. 5:

eine Draufsicht auf die Unterseite des Schnellkupplers aus den Figuren 3 und 4, d.h. auf die dem anzukuppelnden Kupplerteil zugewandten Seite, die die Anordnung der beiden Stellgetriebe rechts und links der Ausnehmung zeigen, und

Fig. 6:

eine schematische, teilgeschnittene Darstellung des Schnellkupplers in einer Seitenansicht, die die gegenläufig verfahrbaren Verriegelungs- und Sicherungselemente und deren Anbindung an eine gemeinsame Antriebswelle zeigt, wobei die Teilansicht (a) die Antriebswelle in einer Drehstellung zeigt, in der die Sicherungs- und Verriegelungselemente entriegelt sind und die Teilansicht (b) die Antriebswelle in einer Drehstellung zeigt, in der die Sicherungs- und Verriegelungselemente verriegelt sind,

Fig. 7:

eine teilgeschnittene, perspektivische Darstellung des Schnellkupplers aus den vorhergehenden Figuren, die einen mit der Antriebswelle gekoppelten Stellantrieb in Form eines Hydraulikzylinders zeigt, und

Fig. 8:

eine teilgeschnittene, perspektivische Darstellung des Schnellkupplers aus den vorhergehenden Figuren, die einen an die Antriebswelle angekoppelten Stellantrieb in Form eines Elektromotors zeigt.

The invention will be explained in more detail below with reference to a preferred embodiment and associated drawings. In the drawings show:

Fig. 1:

a schematic side view of a quick coupler according to an advantageous embodiment of the invention, which is grown on a boom arm of an excavator and attaches a grapple as an attachment tool,

Fig. 2:

a perspective view of the quick coupler Fig. 1 in a decoupled position, in which the two coupling parts which can be coupled with one another are shown shortly before hooking on the hook section,

3:

a schematic representation of the electric / hydraulic drive system of the quick coupler from the preceding figures according to an advantageous embodiment of the invention,

4:

a perspective view of the quick coupler Fig. 3 obliquely from below, ie from the coupler part to be coupled facing side, showing the extendable locking elements on the locking receptacle,

Fig. 5:

a plan view of the underside of the quick coupler from the Figures 3 and 4 , ie, on the side facing the coupling part to be coupled, showing the arrangement of the two actuating gear to the right and left of the recess, and

Fig. 6:

a schematic, partially sectional view of the quick coupler in a side view showing the counter-movable locking and securing elements and their connection to a common drive shaft, wherein the partial view (a) shows the drive shaft in a rotational position in which the securing and locking elements are unlocked and the partial view (b) the drive shaft in a Rotary position shows, in which the locking and locking elements are locked,

Fig. 7:

a partially cut, perspective view of the quick coupler from the preceding figures, which shows a coupled to the drive shaft actuator in the form of a hydraulic cylinder, and

Fig. 8:

a partially cut, perspective view of the quick coupler from the preceding figures, which shows a coupled to the drive shaft actuator in the form of an electric motor.

As Fig. 1 shows, the quick coupler 1 between the free end of the boom 5 of an excavator 30 and the tool to be mounted on it 4 are mounted, said attachment tool 4 in Fig. 1 is designed as a grave spoon, but in a conventional manner, of course, other corresponding construction, handling or demolition tools, for example in the form of clamshell, demolition tongs, scissors or the like may include. Said quick coupler 1 is in this case on the one hand by means of a handle-side coupler part 2 pivotally mounted to a lying, aligned transversely to the longitudinal axis of the boom stem 5 pivot axis of said boom arm 5, so that the quick coupler 1 together with the attached tool 4, for example by means of a pressure medium cylinder 36 and an intermediate swivel piece 37 can be pivoted relative to the extension arm 5.

By means of a tool-side coupler part 3 - see. Fig. 2 On the other hand, said quick coupler can be mounted on the attachment tool 4 and / or an intermediate rotary drive.

As the Figures 2 and 3 show, one of the two coupler parts 2 and 3, preferably the handle-side coupler part 2, on the one hand a Ankuppelaufnahme 6 and on the other hand, a locking receptacle 10 include the two Locking parts, for example in the form of locking axes 13 and 14 on the other, preferably tool-side coupler part 3 hooked or can be brought into engagement. Contrary to the illustration of the drawing, it would in principle also be conceivable to provide a locking axis and a receptacle on the coupler part and turn a locking axis and a receptacle on the other coupler part, however, the embodiment shown with two receptacles, ie locking receptacle and Ankuppelaufnahme on a coupler part and two corresponding locking axes on the other coupler part is preferred because the associated securing and locking elements and their operation can then be summarized on a coupler part.

As Fig. 2 shows the Ankuppelaufnahme 6 and the locking receptacle 10 each have a mouth-shaped, open to one side receptacle into which the locking axles 13 and 14 can retract, which may be formed by transverse bolts or locking bolts, see. Fig. 2 , The Ankuppelaufnahme 6 and the locking receptacle 10 are advantageously arranged and configured such that when a first locking axle 13 of a coupler part 3 is retracted or hooked into the preferably hook-shaped Ankuppelaufnahme 6 of the other coupler part 2, the two coupler parts can be pivoted to each other in such a way that the Ankuppelaufnahme 6 and the locking shaft 13 received therein form the axis of rotation and can retract the second locking shaft 14 in the locking receptacle 10 by the corresponding pivoting movement, so that the two coupler parts 2 and 3 are coupled together in a two-stage coupling process can. First, the Ankuppelaufnahme 6 is hooked to the first locking shaft 13 to then by pivoting the two coupler parts 2 and 3 relative to each other - which can be done for example by actuation of the aforementioned pivoting cylinder 36 - the locking receptacle 10 can be brought into engagement with the second locking axis 14.

If the second locking axle 14 is retracted into the locking receptacle 10, said second locking axle 14 is locked in the locking receptacle 10 or the locking receptacle 10 is closed, so that the second locking axle 14 can not come out. For this purpose, a locking element 11 is provided, for example in the form of a locking wedge, which can be moved on the opening side of the locking receptacle 10 in front of the locking shaft 14 received therein, cf. Fig. 3 , For manual actuation of said locking element 11, a tool 15 can advantageously be attached.

By locking the locking element 11 not only the second locking shaft 14 is held in the locking receptacle 10, but also the two coupler parts 2 and 3 locked together because the Ankuppelaufnahme 6 is formed so that the first locking axle 13 received therein not from the Ankuppelaufnahme. 6 out, when the second locking shaft 14 is caught in the locking receptacle 10.

Nevertheless, the coupling receptacle 6 is advantageously associated with a securing element 25 which secures or locks the locking axis 13 in the coupling receptacle 6 and prevents the locking axis 13 from being moved out of the coupling receptacle 6. Said securing element 25 may comprise a movable latch part which can be retracted into the area of the open end of the coupling receptacle 6, cf. Fig. 6 (b) ,

As the Figures 3-5 show, two locking elements 11 of the locking receptacle 10 are advantageously assigned to lock therein the second locking axis 14, wherein said locking elements 11 may be advantageously arranged on opposite edge or side portions of the coupler body 7.

Likewise, two securing elements 25 may be associated with the coupling receptacle 6 in order to lock the first locking axis 14 therein, wherein said securing elements 25 may advantageously be arranged on opposite edge or side sections of the coupler body 7.

The two locking elements 11 and the two securing elements 25 can advantageously be manually operated via a control gear 12, wherein each locking element 11 and securing element 25 may be assigned its own adjusting gear assembly, which can be synchronized with each other via the tool 15 to be applied or a synchronization shaft.

As Fig. 5 shows best, each adjusting gear assembly of the adjusting gear 12 includes a rotary actuator 16 which is mounted about a transverse axis approximately parallel to the longitudinal extent of the locking receptacle 10 and transversely to the longitudinal axis of the locking member 11 rotatably mounted on the coupler body 11, wherein advantageously the axes of rotation of the two rotary actuator parts 16 to each other can be aligned.

On the one hand rotary actuating part 16, on the one hand, an actuating link 17 is articulated, which, on the other hand, is articulated on the associated locking element 11. If the rotary actuator 16 is rotated, the said actuating link 17 converts the rotational movement into a displacement of the locking element 11. The said locking element 11 is for this purpose mounted longitudinally displaceable on the coupler body 7.

In order to be able to move the securing element 25, a second rotary setting part 26 can be provided, which can be formed separately from the first rotary setting part 16, but can also be combined with the mentioned rotary setting part 16. An actuation link 27 directs the securing element 25 against the aforementioned rotary setting part 26 in order to convert a rotation of the rotary setting part 16 into a translatory sliding movement of the securing element 25.

Advantageously, the rotary actuator parts 16 and 26 extend on opposite sides of the axis of rotation, so that the locking and securing elements 11 and 25 are moved in opposite directions to each other when the rotary actuator parts are rotated in one direction of rotation, see. in comparison to each other Fig. 6 (a) and Fig. 6 (b) ,

On the other hand, a tension link 18 is articulated articulated to said rotary actuator 16 and / or the rotary actuator 26, on the other hand, is displaceably guided on the coupler body 7. More precisely, the said tension control arm 18 is slidably guided on a rotatable stop 19, so that the tension link 18 can be displaced against the stop 19 during rotational movements of the rotary actuating part 16, wherein the stop 19 can rotate simultaneously in order to take into account the pivoting of the tension link 18 ,

Said tensioning arm 18 is prestressed by a spring device 20, said spring device 20 being able to be arranged between said stop 19 and a shoulder of the tensioning link 18, for example in the form of a helical spring which is pushed over the tensioning link 18.

The clamping force of the spring device 20 attempts to move the tension link 18 in one direction, which causes a rotational bias on the rotary actuator 16 and / or the rotary actuator 26.

The spring device 20 and the tensioning link 18 are in this case arranged on the rotary adjusting part 16 that when turning the rotary actuator 16 from the unlocked position into the locking position and vice versa from the locking position to the unlocked position a dead center position is run over and the spring device 20, the rotary actuator 16 once trying to bias in one direction and the other in the other direction. In other words, the spring device 20 biases the rotary actuator 16 on the one hand the unlocked end position and on the other hand in the locked end position before, depending on which side of the said dead center has been run over.

Advantageously, the two adjusting gear assemblies of the adjusting gear 12, each comprising the rotary actuator parts 16 and 26, the actuating arm 17 and 27, the tension arm 18 and the spring device 20, along an elongated space extending laterally or edge left or right of the coupler body 7 , so that the adjusting gear assemblies are limited in their extension to the right and left edge regions of the coupler body 7.

Advantageously, the spring device 20 and the tension link 18 on the one hand and the actuating link 17 on the other hand on opposite sides of the rotary actuator 16 are arranged to achieve an overall very slim design of the adjusting gear assemblies.

As Fig. 5 shows, the two Stellgetriebebaugruppen can be synchronized by a drive or synchronization shaft 21 with each other, which couples the two rotary actuator members 16 together so that they are rotated in synchronization with each other.

Said drive shaft 21 can be permanently installed or alternatively be formed by the actuation tool 15 to be attached, which can be inserted from one side in both rotary actuator parts 16 and 26 respectively. The rotary actuator parts 16 and 26 can for this purpose have a torque-transmitting plug-in recess, for example in the form of a polygonal hole or a profile shaft recess.

The rotary actuator parts 16 and 26 can advantageously be arranged such that the actuating tool 15 can be inserted through a through-passage 22 which can be inserted into one of the side flanges of the coupler part 3 to be coupled, cf. Fig. 2 ,

As the Figures 3-5 show the coupler body 7 of the coupler part 2 has a central recess 8 which is provided between the Ankuppel- and locking receptacles 6 and 10 and extends on the underside of the coupler body 7, see. FIGS. 4 and 5 ,

Said recess 8 is thereby framed, on the one hand by said coupling and locking receptacles 6 and 10 and the sections of the coupler body 7 forming these, and on the other hand by longitudinally extending longitudinal webs which form the coupler body 7 on the right and on the left connect both Ankuppel- and locking receptacles 6 and 10 together. The central region of the coupler body 7 is thus recessed, said recess 8 can extend over more than two thirds of the width of the coupler body 7 and over at least half of the length in the sense of spacing between the two Ankuppel- and locking receptacles 6 and 10.

In particular, said recess 8 may form a central cup-shaped or trough-shaped recess in the underside of the coupler body 7, which is moved to the coupler part 3 to be joined during coupling, said recess 8 laterally to the right and left of strengthening, stiffening structure thickening, in particular in the form may be bordered by edge beads 23. Said edge beads 23 may form an elongate hollow box profile or else consist of a solid longitudinal member or web, so that the thickness of the coupler body on the lateral edge beads 23 increases massively with respect to the recessed central region and in particular is a multiple of the thickness in the central region. As Fig. 4 and Fig. 5 show the central recess 8 can be bordered along three sides of such edge beads, wherein left and right arranged edge beads 23l and 23r be at least partially formed as a hollow box profile and / or can accommodate the adjusting gear sections of the adjusting gear 12. A transversely extending edge bead 23q can form the receiving jaw 6 and / or laterally shaped peripheral mouthpieces 6 connect together and be formed, for example in the form of a solid half-shell profile.

In the recessed central region between said edge beads 23 of the coupler body 7 may consist essentially only of a structural plate 24, for example in the form of a sheet metal plate, in particular sheet steel plate or a thin, approximately planar structural part, which may also be designed wandwerk- or net or mesh-like.

As the FIGS. 4 and 5 show, in the central, compared to the edge beads 23 significantly thinner structural part 24 which connects said edge beads 23 together, a central through-hole 8a may be provided, which may form part of said recess 8 and in the area of said recess 8 extends from the bottom to the top of the coupler body 7. Said passage recess 8a may, for example, have an extent whose inside diameter is more than 50% or even more than 66% of the width of the entire coupler body and / or its clear length more than 33% or even more than 50% of the spacing of the coupling and Locking recordings is.

The actuating mechanism 12 extends laterally to the right and left of said recess 8 and leaves the said recess 8 free, so that existing coupling coupler 3 existing hydraulic couplings 9 collision-free retract into the recess 8 and between the two Ankuppel- and locking receptacles 6 and 10th can retract.

Said actuating gear 12 may extend at least partially in the interior of said edge-side edge beads 23l and 23r, wherein alternatively or additionally said edge beads 23 may also have recesses in the region of which said actuating gears 12 are exposed.

Like from the FIGS. 6 (a) and 6 (b) seen, the quick coupler is advantageously characterized by the fact that both the locking receptacle 10 associated locking member 11 and a movable securing member 25 which is associated with the Ankuppelaufnahme 6 for securing the first locking member 13 received therein, actuated by the common drive shaft 21 and each over an actuating handlebars 17, 27 are articulated on a rotatably connected to the common drive shaft 21 rotary actuator part 16, 26, so that the Verriegelungslement 11 and the securing element 25 by rotating the common drive shaft 21 in a rotational direction to each other in opposite directions.

Advantageously, it can be provided that said drive shaft 21 extends transversely over the coupler body 7 between the coupling receptacle 6 and the locking receptacle 10 and a side wall 7s of the coupler body 7 has a through-passage 28, through which the drive shaft 21 extends to an outer side of the coupler body 7 extends and / or the hand tool with the drive shaft 21 can be coupled.

Advantageously, it can be provided that the Ankuppelaufnahme 6 forms a mouth-shaped blind groove with a Nutlängsachse 29, which is facing away from the locking receptacle 10 to a side, wherein the Nutlängsachse 29 to a control axis 25a of the fuse element 25 and / or a connecting plane 30 which goes through both the Ankuppelaufnahme 6 and through the locking receptacle 10 is inclined at an acute angle.

Advantageously, it can be provided that the rotary actuator parts 16, 26, on which the locking element 11 on the one hand and the securing element 25 are hinged on the other hand, extend on opposite sides of the drive shaft 11 and are arranged such that the actuating links 17, 27 of the locking element 11 and When the drive shaft 21 is rotated, the securing element 25 can be overstretched from the unlocking position into the locking position and in each case run over a dead center.

In a further development of the invention, the quick coupler can be characterized in that the securing element 25 is coupled via the operating link 27 and the rotary actuator 26 at least substantially free of play to the rotational movement of the drive shaft 21 and the rotational movement of the drive shaft 21 is positively controlled converted into an actuating movement of the securing element 25 while the locking member 11 relative to the drive shaft 21 has a limited clearance, which is preferably associated with a biasing device for biasing in an end position of clearance.

Advantageously, it may be provided that a monitoring sensor system 31 for monitoring the locking has at least one rotary position sensor 32 for monitoring the reaching of an interlocking rotational position of the drive shaft 21 and two pick-up sensors 33, 34, which are assigned on the one hand the Ankuppelaufnahme 6 and on the other hand, the locking receptacle 10 and the presence the first and second locking part 13, 14 in the Ankuppelaufnahme 6 and the locking receptacle 10 monitor.

Advantageously, it can be provided that the common drive shaft 21 has a Stellaktoranschluss for connecting a foreign energy actuated Stellaktors 35 for rotating the drive shaft 21.

In a further development of the invention, the quick coupler can be characterized in that the Stellaktor 35 includes at least one pressure medium cylinder 36 which extends substantially parallel to a connection plane which goes through both the Ankuppelaufnahme 6 and through the locking receptacle 10.

In development of the invention, the quick coupler can be characterized in that the Stellaktor 35 includes an electric motor and / or an electric Stellaktor.

Claims (16)

Quick coupler for coupling a tool (4) to an excavator handle (5) or the like, with a coupler body (7) on opposite ends on the one hand a Ankuppelaufnahme (6) for receiving a first locking part (13) of a coupler part (3) to be coupled and on the other a locking receptacle (10) for receiving a second locking part (14) of the coupler part (3) to be coupled, wherein at least the locking receptacle (10) is associated with at least one movable locking element (11) for locking the second locking part (14), said locking element (11) via a on the coupler body (7) arranged actuating gear (12) is manually operable having a rotatably mounted, detachable with a hand tool drive shaft (21), characterized in that both the locking receptacle (10) associated locking element (11 ) as well as a movable securing element (25), the Ank uppelaufnahme (6) is assigned for securing the first locking part (13) received therein, by the common drive shaft (21) actuated and in each case via an actuating link (17, 27) at one with the common drive shaft (21) rotatably connected rotary actuator part (16, 26) are hinged, so that the Verriegelungslement (11) and the securing element (25) Twisting the common drive shaft (21) in a direction of rotation in opposite directions. A quick coupler as claimed in the preceding claim, wherein said drive shaft (21) extends transversely across the coupler body (7) between the hitch receiver (6) and the latch receptacle (10) and a side wall (7s) of the coupler body (7) has a through-hole (28). through which the drive shaft (21) extends to an outside of the coupler body (7) and / or the hand tool with the drive shaft (21) can be coupled. Quick coupling according to one of the preceding claims, wherein the Ankuppelaufnahme (6) forms a mouth-shaped blind groove with a Nutlängsachse (29) which is open to a side facing away from the locking receptacle (10), wherein the Nutlängsachse (29) an adjusting axis (25a) of the securing element (25) and / or to a connecting plane (30), which passes both through the Ankuppelaufnahme (6) and through the locking receptacle (10) is inclined at an acute angle. Quick coupler according to one of the preceding claims, wherein the rotary actuating parts (16, 26), on which the locking element (11) on the one hand and the securing element (25) are articulated on the other hand, extend on opposite sides of the drive shaft (11) and are arranged such that the actuating links (17, 27) of the locking element (11) and of the securing element (25) are stretched out of the unlocking position into the locking position when the drive shaft (21) is rotated and in each case run over a dead center. Quick coupler according to the preceding claim, wherein the securing element (25) via the actuating link (27) and the rotary actuator (26) at least substantially free of play coupled to the rotational movement of the drive shaft (21) and the rotational movement of the drive shaft (21) forcibly controlled in an actuating movement the locking element (25) is reacted, while the locking element (11) relative to the drive shaft (21) has a limited clearance, which is preferably associated with a biasing device for biasing in an end position of clearance. Quick coupler according to one of the preceding claims, wherein a monitoring sensor system (31) for monitoring the locking comprises at least one rotary position sensor (32) for monitoring the achievement of an interlocking rotational position of the drive shaft (21) and two pick-up sensors (33, 34), on the one hand the Ankuppelaufnahme ( 6) and on the other hand the locking receptacle (10) are associated with and monitor the presence of the first and second locking part (13, 14) in the Ankuppelaufnahme (6) and the locking receptacle (10). Quick coupler according to one of the preceding claims, wherein the coupler body (7) in a central portion between its Ankuppel- and locking receptacles (6, 10) to be coupled coupler part (3) open towards recess (8) for receiving and / or retracting hydraulic connections of the coupling Coupler part has and the adjusting gear (12) next to the recess (8), the recess (8) is positioned to be free. A quick coupler as claimed in the preceding claim, wherein the recess (8) is at least partially a passage recess (8a) which faces both the side of the coupler body (7) facing the coupler part (3) to be coupled and the opposite side of the coupler body (7) Coupler body (7) is formed open, wherein the recess (8) in the transverse direction transverse to the plane of the coupling movement a clear width (B) of more than 1/2 or more than 2/3 of the width of the entire coupler body (7) and a in the longitudinal direction, which connects the two Ankuppel- and locking receptacles (6, 10) has a length (L) of more than 1/3 or more than 1/2 of the spacing of the Ankuppel- and locking receptacles (6, 10) from each other. Quick coupler according to one of the two preceding claims, wherein the recess (8) bordered by stiffening and / or strength-increasing structural parts and / or edge beads (23) of the coupler body (7), wherein in the region of said edge beads (23) the thickness (D ) of the coupler body (7) is a multiple of the coupler body (7) in the region of the recess (8), wherein in particular said recess (8) forms a cup or trough-shaped depression in a bottom of the coupler body (7), of the said Edge beads (23) is bordered on at least two or three sides, wherein the actuating gear (12) is at least partially received in the interior or in the region of the edge beads (23). Quick coupler according to one of the preceding claims, wherein with the rotary actuator (16) a spring device (20) is coupled such that upon rotation of the rotary actuator (16) overrun a dead center and the rotary actuator (16) in opposite end positions of the spring means (20) tensioned is, wherein the spring means (20) biases a tension link (18) articulated to the rotary actuator part (16) and slidably guided on the coupler body (7). Quick coupler according to one of the two preceding claims, wherein the spring device (20) and the actuating link (17) of the locking element (11) on opposite sides of the rotary actuator part (16) are arranged and extend along a common plane, which is aligned perpendicular to the axis of rotation of the rotary actuator. Quick coupler according to one of the preceding claims, wherein the actuating gear (12) comprises two adjusting gear assemblies comprising respective rotary actuating members (16, 26) and actuating links (17, 27) for each locking and securing element (11, 25) which can be moved in opposite directions and a spring device (20). which extend in opposite lateral edge regions of the coupler body (7) and / or along opposite sides of the recess (8) and for biasing two locking elements (11) associated with the locking receptacle (10) and two securing elements (25), which are associated with the Ankuppelaufnahme (6), are provided, wherein the Drehstellteile (16, 26) of the two Stellgetriebebaugruppen the adjusting gear (12) by the common drive shaft (21) and / or a plug-in actuating tool (15) synchronized with each other and are coupled , A quick coupler system comprising a quick coupler (1) according to one of the preceding claims, and a coupler part (3) coupleable to the coupler body (7), the locking parts retractable into the coupling and locking receivers (6, 10) of the coupler body (7) (13, 14) and has between the two locking parts (13, 14) to the coupler body (7) towards projecting hydraulic and / or power couplings, which are retractable into the recess (8) of the coupler body (7). Quick coupler according to one of the preceding claims, wherein the common drive shaft (21) has a Stellaktoranschluss for connecting a foreign energy actuated Stellaktors (35) for rotating the drive shaft (21). A quick coupler according to the preceding claim, wherein the actuating actuator (35) comprises at least one pressure medium cylinder (36) which extends substantially parallel to a connecting plane passing through both the coupling receptacle (6) and the locking receptacle (10). Quick coupler according to one of the two preceding claims, wherein the Stellaktor (35) comprises an electric motor and / or an electric Stellaktor.

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