EP3708716B1 - Dispositif de connexion - Google Patents

Dispositif de connexion Download PDF

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Publication number
EP3708716B1
EP3708716B1 EP20154243.8A EP20154243A EP3708716B1 EP 3708716 B1 EP3708716 B1 EP 3708716B1 EP 20154243 A EP20154243 A EP 20154243A EP 3708716 B1 EP3708716 B1 EP 3708716B1
Authority
EP
European Patent Office
Prior art keywords
latch
axial
bolt
quick
contour
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.)
Active
Application number
EP20154243.8A
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German (de)
English (en)
Other versions
EP3708716A1 (fr
EP3708716C0 (fr
Inventor
Markus Riedlberger
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.)
Individual
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Individual
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Publication date
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Publication of EP3708716A1 publication Critical patent/EP3708716A1/fr
Application granted granted Critical
Publication of EP3708716B1 publication Critical patent/EP3708716B1/fr
Publication of EP3708716C0 publication Critical patent/EP3708716C0/fr
Active legal-status Critical Current
Anticipated expiration legal-status Critical

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Classifications

    • E—FIXED CONSTRUCTIONS
    • E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
    • E02F—DREDGING; SOIL-SHIFTING
    • E02F3/00—Dredgers; Soil-shifting machines
    • E02F3/04—Dredgers; Soil-shifting machines mechanically-driven
    • E02F3/28—Dredgers; Soil-shifting machines mechanically-driven with digging tools mounted on a dipper- or bucket-arm, i.e. there is either one arm or a pair of arms, e.g. dippers, buckets
    • E02F3/36—Component parts
    • E02F3/3604—Devices to connect tools to arms, booms or the like
    • E02F3/3609—Devices to connect tools to arms, booms or the like of the quick acting type, e.g. controlled from the operator seat
    • E02F3/364—Devices to connect tools to arms, booms or the like of the quick acting type, e.g. controlled from the operator seat using wedges

Definitions

  • the invention relates to a connecting device for the detachable connection of two components, in particular a tool holder and a quick-change device of a quick-change device on a construction machine, wherein at least one bolt is mounted on a first component, which is adjustable between a retracted position and a locking position, in which the at least one Latch engages in an opening of a latch receptacle on the other component, according to the preamble of claim 1.
  • Quick couplers also known as quick-change devices
  • quick-change devices have been used for a long time, particularly in construction machinery, in order to efficiently change a tool on an excavator arm, for example.
  • a special tool holder of the quick coupler is arranged on a tool.
  • a corresponding quick-change device is attached to the excavator arm, which can be coupled to the tool holder in a connection position. In this connection position, at least one bolt can then be extended from a retracted position into a locking position, as a result of which the tool holder is firmly connected to the quick-change device.
  • Such quick-change devices go from the DE 10 2005 056 505 B3 or the EP 3 354 800 A1 out.
  • the problem can arise that if the tool holder and quick-change device are not properly coupled or if the bolt is dirty, it cannot be fully retracted into the locking position and thus not fully into a bolt receptacle. If the tool is actuated again, there is a risk that it will unexpectedly detach itself from the quick-change device. Depending on the location and the time of loosening, the tool with the tool holder can fall to the ground and cause property damage and personal injury.
  • a bolt is disclosed which tapers forwardly.
  • a conical tip is arranged at the front end, with which the locking bolt is pushed into a holder with two spaced-apart cheeks.
  • a latch bolt which has two chamfered surfaces and an intermediate surface parallel to the latch axis.
  • the locking bolt can be inserted into a component with two legs and a central cavity in between. Recesses are arranged in each of the legs, with an inclined surface coming to rest in each of the two recesses.
  • the invention is based on the object of specifying a connecting device with which an increased connection reliability between two components can be achieved.
  • the at least one bolt has a stepped contour with at least three steps, with the stepped contour of the bolt tapering towards the free end of the bolt and that a corresponding stepped contour is formed on the bolt receptacle, with the stepped contour of the bolt receptacle expanded towards the opening side.
  • the connecting device With the connecting device according to the invention, improved insertion of the bolt into a bolt receptacle is achieved even if the two components to be connected are not exactly aligned. Due to the stepped design of the bolt and bolt receptacle, good contact between the bolt and bolt receptacle is already achieved in a first stage, even if it is only partially retracted. This leads to an increase in the security of the connection and thus reduces the risk of unintentional loosening of the components. With increasing retraction of the stepped bolt into the correspondingly stepped bolt receptacle, the positional accuracy between components is increased and the contact surface and security against unintentional release are also increased.
  • the opening may have a simple one-sided stop surface or a hole for fully receiving the latch.
  • a preferred embodiment of the invention is that a front axial locking step with a smaller cross-sectional area and a rear axial locking step with a larger cross-sectional area are formed in the stepped contour of the bolt, that a front receiving step and a rear receiving step are formed in the corresponding stepped contour of the bolt receptacle, and that when adjusting the at least one bolt in the locking position first the front axial Locking stage comes into engagement with the front axial receiving stage for a pre-positioning of the components, and then to achieve a final locking position the front axial locking stage on the rear axial receiving stage and the rear axial locking stage on the front axial receiving stage comes to rest.
  • Corresponding intermediate stages can also be provided corresponding to the number of stages provided on the bolt and bolt receptacle.
  • the connecting device provides that three stages are provided, with an axial intermediate latch stage being arranged on the bolt between the front axial latch stage and the rear axial latch stage and an axial intermediate latch stage being arranged on the bolt receptacle between the front axial latch stage and the rear axial latch stage. This results in a three-stage locking and a three-stage latching when making the connection.
  • the locking steps are arranged in an offset manner and are connected to one another via inclined surfaces that are inclined thereto.
  • the steps can be formed with flat or curved surfaces.
  • the bolts are in particular cuboid in shape.
  • the bolts are preferably of cylindrical design, with the individual bolt steps being coaxial with one another.
  • the step contour is preferably formed circumferentially. Inclined bevel surfaces are provided between the individual locking steps and also between the individual receiving steps, which preferably have an angle of inclination to the step surfaces of 20° to 70°, preferably between 30° and 60°. This is advantageous for a particularly gentle production of the connection.
  • the stepped contour of the bar can have a certain sweep towards the free end.
  • the receiving steps are offset from one another and are connected to one another via inclined surfaces that are inclined thereto are.
  • these sloping surfaces on the receiving steps are designed to correspond to the sloping surfaces on the locking steps.
  • the preferred angle ranges mentioned above apply.
  • connection device can be used on a wide variety of devices, devices and machines.
  • the connecting device is formed on a quick-change device with a tool holder and a quick-change device, with the at least one latch being arranged on the quick-change device.
  • the at least one bolt is actuated by an actuating cylinder, in particular a hydraulically operated actuating cylinder.
  • the hydraulic supply device is advantageously spaced apart from the tool holder and arranged on the side of the quick-change device.
  • the quick-change device is arranged with the at least one latch on an excavator arm.
  • the excavator arm is articulated in a fundamentally known manner on an upper carriage of a construction machine.
  • the construction machine can preferably have a crawler chassis or a wheeled chassis, on which the superstructure is preferably rotatably mounted.
  • the tool holder is attached to a construction tool.
  • the construction tool can be an excavator shovel, for example, which itself does not require any additional energy supply.
  • the construction tool may be a power-operated device or machine, such as a jar or vibrator for soil compaction.
  • at least one plug connection for power or data lines can be provided on the connection arrangement.
  • FIG. 1 shows a bolt receptacle 40, which is attached to a component, not shown, such as a tool holder.
  • the bolt receptacle 40 has an opening 42 with a step contour 50 .
  • the step contour 50 tapers inwards from the opening 42, with an opening diameter being reduced, so to speak.
  • the step contour 50 has a front axial receiving step 52 which merges into an outside of the bolt receptacle 40 by means of a chamfer 51 .
  • an intermediate axial receiving step 54 is provided following the front axial receiving step 52, with a first receiving inclined surface 53 being formed between the two.
  • the intermediate axial receiving stage 54 merges into a rear axial receiving stage 56 by means of a second inclined receiving surface 55 .
  • the corresponding step contour 50 is formed with three steps.
  • the opening 42 is closed off by a transverse stop surface 58 .
  • a bolt-shaped bolt 20 with a base body 22 is inserted into this bolt receptacle 40, the bolt 20 having a stepped contour 30 at its free end and being arranged on a component, not shown, such as a quick-change device.
  • the step contour 30 of the bolt 20 is adapted to the corresponding step contour 50 of Bolt receptacle 40 formed.
  • a chamfer 31 is formed on an axial end face at the free end of the bolt 20 , which transitions into a front axial bolt step 32 .
  • An axial intermediate locking step 34 and a rear axial locking step 36 are formed approximately parallel to the front axial locking step 32 , the front axial locking step 32 merging into the central axial intermediate locking step 34 via a first locking inclined surface 33 . This, in turn, merges into the rear axial locking step 36 via a second inclined locking surface 35 .
  • the axial locking steps 32, 34, 36 have a certain axial extent and a flat surface, which are aligned parallel to one another and have a certain inclination with respect to a longitudinal axis of the locking bar 20.
  • the front axial locking step 32 rests against the front axial receiving step 52 of the locking receiver 40 . Because of the surface contact between the bolt receptacle 40 and the bolt 20, there is a certain adhesive connection. Furthermore, the stepped contour on the bolt 20 and the bolt receptacle 40 allows the bolt 20 to be pushed in for the first time, even if there is not yet an exact alignment between the components.
  • end positioning is achieved according to FIG 4 reached.
  • the front axial locking step 32 rests against the rear axial receiving step 56 .
  • the intermediate axial latch step 34 of latch 20 and the intermediate axial receiving step 54 of latch receiver 40 are in contact.
  • the rear axial latch step 36 of latch 20 and the front axial receiving step 52 of latch receiver 40 are in contact.
  • the bevel surfaces in between can also make contact. In this end positioning are the Bolt 20 and the bolt receptacle 40 and thus the corresponding components to which the bolt 20 or the bolt receptacle 40 are attached, positioned exactly to one another.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Mining & Mineral Resources (AREA)
  • Civil Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Structural Engineering (AREA)
  • Mutual Connection Of Rods And Tubes (AREA)
  • Quick-Acting Or Multi-Walled Pipe Joints (AREA)

Claims (7)

  1. Dispositif de connexion pour la connexion détachable de deux éléments, en particulier un porte-outil et un dispositif de changement rapide d'un changeur rapide sur une machine de construction, dans lequel
    - au moins un verrou (20) avec un contour en paliers (30) est monté sur un premier élément, qui est réglable entre une position de retrait et une position de verrouillage, dans laquelle ledit au moins un verrou (20) s'engage dans une ouverture (42) d'un logement de verrouillage (40) sur l'autre élément, et
    - un contour en paliers correspondant (50) est formé sur le logement de verrouillage (40), le contour en paliers (50) du logement de verrouillage (40) s'élargissant vers le côté d'ouverture.
    caractérisé en ce que
    - l'au moins un verrou (20) présente un contour en paliers (30) avec au moins trois paliers, dans lequel le contour en paliers (50) du verrou (20) se rétrécit vers l'extrémité libre du verrou (20),
    - un palier axial avant de verrouillage (32) de petite section transversale et un palier axial arrière de verrouillage (36) de plus grande section transversale sont formés sur le contour en paliers (30) du verrou (20),
    - un palier intermédiaire axial de verrouillage (34) est disposé sur le verrou (20) entre le palier axial avant de verrouillage (32) et le palier axial arrière de verrouillage (36),
    - un palier axial avant de réception (52) et un palier arrière de réception (56) sont formés sur le contour en paliers correspondant (50) du logement de verrouillage (40),
    - un palier intermédiaire axial de réception (54) est disposé sur le logement de verrouillage (40) entre le palier axial avant de réception (52) et le palier axial arrière de réception (56) et
    - les paliers de verrouillage (32, 34, 36) sont disposés en décalage et reliés les uns aux autres par des surfaces inclinées de verrouillage (33, 35).
  2. Dispositif de connexion selon la revendication 1,
    caractérisé en ce que
    - lors du réglage dudit au moins un verrou (20) dans la position de verrouillage, le palier axial avant de verrouillage (32) entre d'abord en contact avec le palier axial avant de réception (50) pour un positionnement préliminaire des éléments, puis pour atteindre une position de verrouillage finale, le palier axial avant de verrouillage (32) vient en contact avec le palier axial arrière de réception (56) et le palier axial arrière de verrouillage (36) vient en contact avec le palier axial avant de réception (52).
  3. Dispositif de connexion selon l'une des revendications 1 ou 2,
    caractérisé en ce que
    les paliers de réception (52, 54, 56) sont disposés en décalage les uns par rapport aux autres et reliés les uns aux autres par des surfaces inclinées de réception (53, 55).
  4. Dispositif de connexion selon l'une des revendications 2 ou 3,
    caractérisé en ce que
    un contact de blocage plan est établi dans le positionnement préliminaire entre le palier axial avant de verrouillage (32) et le palier axial avant de réception (52).
  5. Changeur rapide avec un dispositif de connexion selon l'une des revendications 1 à 4,
    caractérisé en ce que
    il est formé sur un changeur rapide avec un porte-outil et un dispositif de changement rapide, dans lequel l'au moins un verrou (20) est disposé sur le dispositif de changement rapide.
  6. Changeur rapide selon la revendication 5,
    caractérisé en ce que
    le dispositif de changement rapide est disposé sur un bras de pelle.
  7. Changeur rapide selon la revendication 5 ou 6,
    caractérisé en ce que
    le porte-outil est fixé à un outil de construction.
EP20154243.8A 2019-03-15 2020-01-29 Dispositif de connexion Active EP3708716B1 (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE102019106613.1A DE102019106613B4 (de) 2019-03-15 2019-03-15 Verbindungsvorrichtung

Publications (3)

Publication Number Publication Date
EP3708716A1 EP3708716A1 (fr) 2020-09-16
EP3708716B1 true EP3708716B1 (fr) 2023-09-06
EP3708716C0 EP3708716C0 (fr) 2023-09-06

Family

ID=69400365

Family Applications (1)

Application Number Title Priority Date Filing Date
EP20154243.8A Active EP3708716B1 (fr) 2019-03-15 2020-01-29 Dispositif de connexion

Country Status (2)

Country Link
EP (1) EP3708716B1 (fr)
DE (1) DE102019106613B4 (fr)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
SE545709C2 (en) * 2022-04-13 2023-12-12 Steelwrist Ab Lock indicator arrangement and method for a quick coupler and quick coupler comprising the same

Family Cites Families (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4119225A (en) 1977-04-18 1978-10-10 Owatonna Manufacturing Company, Inc. Mounting means for attaching an implement to a vehicle
AT380289B (de) 1984-10-19 1986-05-12 Hauer Franz Einrichtung zur verriegelung zweier lagerteile miteinander
DE102005056505B3 (de) 2005-11-28 2007-02-08 Robert Riedlberger Zentriervorrichtung für Schnellwechselvorrichtungen
AT9344U1 (de) 2006-03-27 2007-08-15 Baumaschinentechnik Ges M B H Anbauplatte für eine schnellwechselvorrichtung
GB2466017B (en) * 2008-12-08 2012-10-17 Jcb Compact Products Ltd Mounting assembly
EP2990538B1 (fr) 2014-08-25 2018-09-19 Cangini Benne S.R.L. Raccord rapide pour un engin de terassement
DE102017000852B4 (de) 2017-01-31 2020-11-05 Markus Riedlberger Sicherheitsvorrichtung gegen unbeabsichtigtes Herausfallen von Werkzeugen aus einer Schnellwechselvorrichtung
DE102017110586B4 (de) * 2017-05-16 2023-03-23 OilQuick Deutschland KG Schnellwechsler und Schnellwechselsystem mit einem derartigen Schnellwechsler

Also Published As

Publication number Publication date
DE102019106613A1 (de) 2020-09-17
EP3708716A1 (fr) 2020-09-16
DE102019106613B4 (de) 2023-01-12
EP3708716C0 (fr) 2023-09-06

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