EP0963688A2 - Machine de travail - Google Patents

Machine de travail Download PDF

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Publication number
EP0963688A2
EP0963688A2 EP99110562A EP99110562A EP0963688A2 EP 0963688 A2 EP0963688 A2 EP 0963688A2 EP 99110562 A EP99110562 A EP 99110562A EP 99110562 A EP99110562 A EP 99110562A EP 0963688 A2 EP0963688 A2 EP 0963688A2
Authority
EP
European Patent Office
Prior art keywords
coupling
sleeve
fluid
components
component
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
EP99110562A
Other languages
German (de)
English (en)
Other versions
EP0963688B1 (fr
EP0963688A3 (fr
Inventor
Helmut Scherhaufer-Kremmer
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.)
KREMMER, JOHANNA
Original Assignee
SCHERHAUFER KREMMER HELMUT
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 SCHERHAUFER KREMMER HELMUT filed Critical SCHERHAUFER KREMMER HELMUT
Publication of EP0963688A2 publication Critical patent/EP0963688A2/fr
Publication of EP0963688A3 publication Critical patent/EP0963688A3/fr
Application granted granted Critical
Publication of EP0963688B1 publication Critical patent/EP0963688B1/fr
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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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
    • E02F3/3627—Devices to connect tools to arms, booms or the like of the quick acting type, e.g. controlled from the operator seat with a hook and a longitudinal locking element
    • E—FIXED CONSTRUCTIONS
    • E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
    • E02F—DREDGING; SOIL-SHIFTING
    • E02F3/00—Dredgers; Soil-shifting machines
    • E02F3/04—Dredgers; Soil-shifting machines mechanically-driven
    • E02F3/28—Dredgers; Soil-shifting machines mechanically-driven with digging tools mounted on a dipper- or bucket-arm, i.e. there is either one arm or a pair of arms, e.g. dippers, buckets
    • E02F3/36—Component parts
    • E02F3/3604—Devices to connect tools to arms, booms or the like
    • E02F3/3609—Devices to connect tools to arms, booms or the like of the quick acting type, e.g. controlled from the operator seat
    • E02F3/3654—Devices to connect tools to arms, booms or the like of the quick acting type, e.g. controlled from the operator seat with energy coupler, e.g. coupler for hydraulic or electric lines, to provide energy to drive(s) mounted on the tool
    • 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
    • E02F3/96—Dredgers; Soil-shifting machines mechanically-driven with arrangements for alternate or simultaneous use of different digging elements
    • E02F3/963—Arrangements on backhoes for alternate use of different tools
    • E02F3/964—Arrangements on backhoes for alternate use of different tools of several tools mounted on one machine

Definitions

  • the invention relates to a work machine, in particular for civil engineering work, according to the preamble of claim 1, a quick-change coupling system the preamble of claim 8 and further a fluid coupling according to the preamble of claim 10.
  • Such machines are often found in construction, on quarries, in municipal building yards or agriculture application. To use them versatile To be able to, these machines have different attachments, from which can each be coupled to the machine and used. Around to be able to quickly change the attachment with little effort, are the coupling systems for establishing the connection between the working machine and the attachment mostly designed as a quick-change coupling system. This can be actuated mechanically or hydraulically, in addition at least one locking pin or similar to operate what is from outside the cab has to be done.
  • attachments are also often used, which a Require pressure medium supply.
  • these tools have appropriate connections on, with the current designs by hand to the pressure medium supply the machine must be connected. It is disadvantageous that this either an additional person is required, or the operator of the work machine must leave his cab. This is a significant personnel or Time involved. The advantages of automatic mechanical coupling are partially destroyed.
  • DE 44 12 115 A1 discloses a device for connecting equipment a machine, in particular a header to a harvester known.
  • a drive connection with a first and a second coupling half is provided, which for each related electrical, hydraulic, pneumatic and / or mechanical connections.
  • this device has a locking device to fix the equipment on the machine.
  • the drive connection to be separate from the locking device is trained and operable.
  • the first coupling half of one carrier linearly movable and rotatably supported and on the other, second coupling half brought to the plant, the coupling halves by means of alignment be brought together.
  • the present invention thus provides for the first time that each individual connection of the Fluid coupling can be actuated separately, and that the coupling components to compensate misalignment held in particular adjustable by spherical bearings are. Since, according to the invention, each individual connection is therefore independent of other individual connections is held adjustable, tolerance deviations play in the arrangement of the individual connections to the respective coupling component is irrelevant.
  • a particular advantage of the construction according to the invention is that the extent of an alignment error or the size of an offset essentially none Influence on the force required to establish the connection or on the accuracy of the connection, since each individual connection of the fluid coupling can be actuated separately and each coupling component can be adjusted in position.
  • the invention permits this for the first time also a practicable automatic coupling of the at least one fluid coupling and thus establishing a pressure medium connection between the attachment and the machine without manual intervention. This will decrease the set-up times for such machines are significant.
  • the short changeover times for the machine according to the invention enable it also to reduce the fleet. So especially in the heavy load area instead of two machines with different attachments a machine with interchangeable attachments can be used.
  • the work machine according to the invention is characterized by high reliability off, since the fluid coupling is only closed when it is closed the mechanical coupling defined assignments of the coupling components of the Fluid coupling present. This will result in poor coupling in the area of Fluid coupling effectively avoided.
  • the quick-change coupling system of the work machine according to the invention is also characterized by a compact design.
  • Coupling components is a linear movement. This is the design effort to guide this movement slightly. There is also a linear movement control better than, for example, a swivel movement, which makes a more reliable Sealing on the fluid coupling can be achieved.
  • the guide surfaces of the coupling components slide exactly one above the other.
  • a design has proven to be particularly advantageous in the one of the coupling components has a coupling sleeve, which in the course of the achievement the closed position of the clutch components via a spring-loaded Sleeve on the other coupling component is movable, being in the coupling sleeve a sealing cone is arranged, which resiliently against a stop in the coupling sleeve Direction is biased to the other coupling component, being in the sleeve is present rigidly on the coupling component present valve cone, which acts as a stop serves for the sleeve, and the prestressing force on the sleeve is chosen in this way is that the coupling sleeve and the sleeve in the course of achieving the closed position of the Coupling components create a fluid seal before the valve plug interacts allows fluid passage with the sealing cone when the coupling sleeve the sleeve moves against its resilient bias.
  • the first Step a fluid tight seal between the peripheral surface of the sleeve and the inner surface the coupling sleeve is manufactured.
  • the tightness of the arrangement can be further increased by sealing rings and the like.
  • To the coupling process lighten the sleeve and the coupling sleeve with complementary training Surfaces are provided, which are preferably conical at least in partial areas are to enable a better sliding into each other.
  • a work machine which is characterized in that an additional on the coupling system Locking element is arranged, which separately in the coupled state of the tool can be locked.
  • This point of view which also has independent meaning, allows an additional securing of the coupling connection, which is also fully automatic can be executed.
  • This allows safety regulations to Example from the civil engineering association against failure of the normal Coupling device can be taken into account even better.
  • this additional locking member no manual intervention on the clutch system required so that it can be operated fully automatically. Let it through the advantages outlined above can be achieved even better.
  • the locking member By the locking member can be actuated by a pressure medium, the coupling system already existing energy source can be used for locking. Thereby the design effort can be kept low.
  • the locking element can be locked automatically when coupling, it can be ensured that the locking of the locking member is not forgotten by mistake.
  • a work machine which is characterized in that a coupling component of the coupling system has at least one locking element which with a Locking area on the other coupling component in a defined, form-fitting manner Engagement occurs when the clutch system is closed.
  • a coupling component of the coupling system has at least one locking element which with a Locking area on the other coupling component in a defined, form-fitting manner Engagement occurs when the clutch system is closed.
  • the locking element and the locking area in cuboid Shape and formed with a matched oblique surfaces the reliability and accuracy of the coupling is further increased.
  • the coupling components of the fluid coupling after closing the mechanical coupling are still more defined to each other.
  • the predetermined distance between these fluid coupling components can be set even more precisely, whereby lateral misalignment or inclinations are avoided even more effectively.
  • the locking element can be driven by a pressure medium
  • the Coupling system existing energy source can be used, whereby the Construction further simplified.
  • a quick change coupling system provided according to claim 8.
  • Quick change coupling system can also be the task of the invention solve, whereby the advantages discussed above can be achieved.
  • work machines can be retrofitted.
  • quick-change coupling system are further developed with the features of claims 2 to 7, the corresponding advantages can be achieved.
  • a fluid coupling provided in particular for a work machine.
  • This fluid coupling is suitable especially for a quick-change coupling system because it is durable and reliable Coupling operations can be made in large numbers. Beyond that however, this fluid coupling can also be used for any other fluid connections, i.e. this aspect has an independent character.
  • Figures 1 to 8 are a first and second embodiment of an inventive Quick-change coupling system 1 shown. This has a mechanical Coupling 2 and a fluid coupling 3, an embodiment of the mechanical coupling 2 is only shown in Figures 9 to 15.
  • FIGS. 1 to 3 3 the first embodiment of the fluid coupling is shown in FIGS. 1 to 3 3 explained.
  • Fig. 1 shows the position with the fluid coupling open during Fig. 2 shows an intermediate position
  • Fig. 3 shows the closed fluid coupling represents.
  • the fluid coupling 3 has a machine side Coupling component 31 and a coupling component 32 on the tool side on.
  • the machine-side coupling component 31 is with the piston of a hydraulic cylinder 33 connected in such a way that the coupling component 31 linearly is retractable.
  • the hydraulic cylinder 33 is in turn via a first ball joint bearing 34 pivotally connected to a first bracket 35, by means of which the Coupling component 31 is coupled on the machine side.
  • the tool-side coupling component 32 is via a second one Ball joint bearing 36 hingedly connected to a second bracket 37 which to the Tool is screwed on.
  • the coupling components 31 and 32 are each Via three supports distributed evenly around the circumference on the holder 35 or 37 attached.
  • the machine-side coupling component 31 has a coupling sleeve 31a, which is screwed onto a base plate 31b, which is connected to the piston of the hydraulic cylinder 33 is connected.
  • the coupling sleeve 31a is essentially cylindrical formed and on the tool-side coupling component 32 facing End with conical surfaces and sealing rings, which in their shape on a Sleeve 32a of the coupling component 32 are adapted.
  • the coupling sleeve 31a on the inside a projection 31c, which on that of the coupling component 32 opposite side forms a conical sealing surface. This is due to the 1 and 2, a sealing cone 31d fluid-tight, which is also by means of a spring 31e is biased against the projection 31c.
  • the projection is on the side facing the second coupling component 32 31c formed such that it is substantially perpendicular to the direction of connection of the fluid coupling forms the stop surface, which is in the center Has through hole with a predetermined diameter.
  • the coupling sleeve 31a also has a fluid supply 31f.
  • the coupling component 32 has a valve cone 32b in addition to the sleeve 32a on, which is rigidly coupled to the coupling component 32, while the sleeve 32a spring biased against a conical surface of the sealing cone 32b by means of a spring 32c is.
  • the valve cone 32b is on its coupling component on the machine side 31 facing end formed such that the largest diameter larger as a through hole in the sleeve 32a.
  • the conical surface of the valve cone 32b forms together with the correspondingly designed conical surface on the Sleeve 32a a valve.
  • the coupling component 32 also has sealing elements in the form of O-rings on, which effect a fluid seal to the outside and yet a sliding Allow sleeve 32a to move.
  • the sleeve 32a has on its Outer circumference on that facing the machine-side coupling component 31 End a bevel on the insertion into the coupling sleeve 31a of the machine side Coupling component 31 facilitated.
  • the outside diameter of the sleeve 32a is in this area on the inside diameter of the coupling sleeve 31a adapted that a fluid-tight connection is possible.
  • the spring force of the spring 32c is selected such that it is only overcome is when the end face of the sleeve 32a against the stop surface of the projection 31c of the coupling sleeve 31a. This is explained in more detail below with reference to FIGS. 1 to 3.
  • Fig. 1 the fluid coupling 3 is shown in the open state.
  • the dome sleeve 31a is located at a predetermined distance of z. B. 5 mm before Sleeve 32a. This predetermined relative position of the clutch components 31 and 32 with the mechanical coupling of the quick-change coupling system engaged in front.
  • the sealing cone 31d is so against the conical by means of the spring 31e Surface of the projection 31c pressed that no fluid transfer is possible.
  • Alike the sleeve 32a is pressed against the valve cone 32b by means of the spring 32c, that there is also a fluid-tight seal on the tool side.
  • the coupling sleeve 31a presses the sleeve 32a by means of the stop surface Projection 31c in the direction of the tool-side coupling component 31 such that the fluid passage between the sleeve 32a and the valve plug 32b is opened. Since the sealing cone 31d comes into contact with the valve cone 32b, the sealing cone becomes 31d against the force of the spring 31e from the conical surface of the projection 31c lifted that a fluid passage through the fluid coupling 3 is possible. Of the predetermined diameter of the central through hole on the protrusion 31c adapted to the maximum diameter of the valve cone 32b.
  • the opening of the fluid coupling 3 is carried out in the reverse order, when retracting the coupling sleeve 31a, the fluid paths in the region of the Valve cone 32b or the sealing cone 31d are closed before the fluid seal is lifted between the sleeve 32a and the coupling sleeve 31a.
  • the fluid coupling 3 shown in Figures 4 and 5 according to the second embodiment has the machine-side coupling component 31 and the tool-side Coupling component 32. 4, the fluid coupling 3 is decoupled State shown, while Fig. 5 shows the coupled state.
  • the machine-side coupling component 31 is with the piston of the hydraulic cylinder 33 connected in such a way that the coupling component 31 linearly is retractable.
  • the hydraulic cylinder 33 is in turn via the first ball joint bearing 34 is pivotally connected to the first holder 35.
  • the first bracket 35 has a mounting plate 351 and can be screwed to a machine side Coupling can be coupled.
  • the tool-side coupling component 32 is in turn via the second ball joint bearing 36 hingedly connected to the second holder 37.
  • the second bracket 37 has a mounting plate 371 and can be screwed onto the tool.
  • the coupling component 31 on the machine side has a coupling element 311 and a centering sleeve 312. Furthermore, the coupling component on the tool side 32 a mating coupling 321 and a mating sleeve 322.
  • the clutch element 311 and the counter clutch 321 are in this embodiment commercially available coupling components, with one or both elements the thread is turned off. This is a linear sliding of the Coupling element 311 via the counter-coupling 321 possible without this Twisting is required.
  • the centering sleeves 312 and 322 are of such a diameter matched that the counter sleeve 322 is guided exactly in the centering sleeve 312.
  • both the centering sleeve 312 and the counter sleeve 322 face one another end area to be assigned a bevel, which in the event of tolerance deviations enable exact threading.
  • the ball joint bearings also allow 34 and 36 a swiveling of the respective coupling component 31 or 32.
  • the centering sleeves 312 and 322 are made of metal and hardened and on their Ground sliding surfaces.
  • the counter sleeve 322 is screwed onto a flange 323.
  • This flange 323 is supported on the second ball joint bearing 36 and is together with a connection block 324 pivotally mounted on it.
  • the connection block 324 passes through the ball joint bearing 36 and has a side connection 325 for a hydraulic supply on.
  • the centering sleeve is in the area of the coupling component 31 on the machine side 312 screwed to a connector body 313.
  • the connector body 313 in turn has a side hydraulic connection 314.
  • the connecting body 313 is rigid with a piston 331 of the hydraulic cylinder 33 connected.
  • the hydraulic cylinder 33 is also provided with a collar 332, which is so large in diameter that it is on the ball joint bearing 34 supports.
  • a pressure medium supply 333 is also formed by this collar 332, which acts to move the piston 331 back into the hydraulic cylinder 33 becomes.
  • the hydraulic cylinder can be connected via a further pressure medium supply 334 33 are acted upon such that it extends the piston 331, whereby the Fluid coupling 3 is closable.
  • the first bracket 35 has the mounting plate 351, four supports 352 and a bearing 353 on.
  • the bearing 353 includes the first ball joint bearing 34 and supports it from.
  • a cage 341 of the first ball-and-socket bearing 34 is through a Stage in the bearing 353 and a flange ring 354 held.
  • the second shows analogously Bracket 37, the mounting plate 371, four supports 372, a bearing 373 and one Flange ring 374.
  • a support part 355 connected to the connection body 313 is connected via two Spring devices 356 elastically coupled to the bearing 353.
  • a sleeve section 357 of the support part 355 also acts on a swivel part 342 of the ball joint bearing 34.
  • a support part 375 connected to the connection block 324 is analogous elastically connected to the bearing 373 via two spring devices 376. Of the Supporting part 375 also supports itself against a pivoting part 362 of the second ball joint bearing 36 from.
  • the spring devices 356 and 376 are elastic sleeves with a predetermined one Hardness trained, which are put on metal pins. You doing so biased that the pivot parts 342 and 362 in the decoupled state of the fluid coupling 3 are always in a middle position. As a result, the coupling components are also located 31 and 32 in the decoupled state in a middle position.
  • Fig. 6 is the arrangement of the spring devices 356 and 376 in dashed lines in a plan view indicated.
  • Coupling an attachment to the machine are the Coupling components 31 and 32 of the fluid coupling 3 in that shown in FIG. 4 spaced apart from each other.
  • the hydraulic cylinder is now in this position 33 applied with fluid via the pressure medium supply 334, whereby the Piston 331 extends from the hydraulic cylinder 33.
  • This also applies to the machine Coupling component 31 moved linearly in the axial direction.
  • the centering sleeve 312 finally engages with mating sleeve 322, causing the coupling element 311 and the counter-coupling 321 are fed exactly to one another.
  • the coupling element 311 and the counter-coupling 321 also come together engaged and close.
  • the fluid coupling 3 is thus closed and a pressure medium supply for the attachment is established.
  • the hydraulic cylinder 33 is on the Pressure medium supply 333 is acted upon with fluid in such a way that the piston 331 is drawn in becomes.
  • the coupling element 311 and the counter-coupling 321 lie in relation to one another offset or canted in front, then the centering sleeves 312 and 322 effect such Swiveling around the ball joint bearings 34 and 36 that the coupling components 31st and 32 still engage exactly during the closing process.
  • the coupling element 311 and / or the counter-coupling 321 have additional ones Sealing devices such as O-rings and the like to establish a seal.
  • the pressure medium supply 334 constantly pressurized with pressure medium, so that the hydraulic cylinder 33 maintains a sufficient closing force.
  • the mechanical clutch 2 shown here consists of two spaced apart and interconnected arms 21, only one of which is shown here.
  • a Gripping section 211 of arm 21 engages in a bolt 41 of an attachment during coupling 4 a.
  • the arm 21 is pivotable about the pin 41 and tilts during the coupling process such that the opposite of the gripping section 211 End of arm 21 in alignment with a locking area 42 on the tool 4 comes to rest.
  • This state is shown in FIGS. 10 and 11.
  • a locking element 212 is operated hydraulically in this state so that it extends and with the locking area 42 engages.
  • the locking element 212 and the locking area 42 are equally provided with a bevel, which enable an exact intervention.
  • the quick-change clutch system 1 has a fluid coupling 5, which is based on another design principle, such as the fluid coupling 3 in the first embodiment.
  • a coupling component 51 on the tool is via a holding device 511 coupled to the tool 4.
  • a machine-side clutch component 52 is connected to a bracket 522 via a lever arm 521.
  • the bracket 522 has a hydraulic cylinder 523 and a guide 524, whereby the Lever arm 521 guided linearly along the axis of the hydraulic cylinder 523 is.
  • the tool-side coupling component 51 is shown in more detail in FIGS. 12 and 13 shown. It has an elongated hole 512, into which an in the holding device 511 held bolt transverse to the longitudinal axis of the coupling component 51 is stored.
  • the coupling component 51 is by means of a pressure part 514 and one Spring 515 elastically biased in the axial direction.
  • the coupling component is in a transverse direction 51 also spring-loaded via two pins 516 and 517.
  • the pins 516 and 517 are arranged so that they are on both sides of the pivot axis are around the bolt 513, so that the coupling component 51 is in a central position is held when the fluid coupling 5 is not closed.
  • About other facilities 518 is also the coupling component 51 in the longitudinal direction of the bolt 513 elastically pre-tensioned.
  • the coupling components 51 and 52 have bellows 53 and 54 or Like., which protect the coupling elements from dirt, etc.
  • the gripping section 211 engages in the bolt 41 of the attachment 4, the arm 21 being pivoted further so that the Locking element 212 can be moved into the locking area 42. Then the arrangement is as shown in FIG. 10.
  • the coupling components 51 and 52 face each other at a predetermined distance.
  • the piston of the hydraulic cylinder 523 then retracted such that the coupling component 52 on the coupling component 51 touches down and closes the hydraulic connection.
  • the coupling elements conical sealing surfaces, creating a well sealed connection between the coupling components 51 and 52 results.
  • There are also O-rings and the like are provided for sealing against leakage losses.
  • FIGS. 14 and 15 A further aspect of the present invention is illustrated in FIGS. 14 and 15.
  • the locking member is hook-shaped and encompasses the Bolt 41 of the attachment 4 in the coupled state in a form-fitting manner.
  • the locking member 6 is pivoted when coupled by a hydraulic cylinder 61.
  • each of the coupling components can be kept deformable, so that Tolerance and misalignment can be effectively compensated.
  • the deformation a coupling component is particularly low in machines Power transmission and, for example, plastic coupling components are an advantage.
  • the greater design effort for the adjustability of the position is particularly in heavy work machines with larger tolerance ranges and elastic loads on the coupling system properly. What a way to balance this misalignment is applied to the respective machine depends thus depending on the operating conditions. This also allows a good adjustment achieve the respective application.
  • At least one of the coupling components can compensate for Misalignment can be floating, which makes it reliable and good Compensation of tolerance deviations is achieved.
  • the floating shown In the case of very low misalignments, bearings can also be caused by the elasticity of the formula Coupling components are manufactured.
  • At least one of the Coupling components can be mounted on an eccentric disc. This construction too is characterized by its simplicity and reliability.
  • At least one of the coupling components limited movement in one plane by means of an elongated bolt connection and is rotatably arranged in a vertical plane thereto. That too is reliable alignment error compensation possible.
  • At least one of the coupling components can also be elastically displaced in the longitudinal direction of the bolt by a pair of springs Tolerance deviations across the connection direction can be effectively compensated.
  • the more complicated part with the hydraulic cylinder can optionally on the be arranged on the machine-side coupling or on the attachment. Is preferred thereby attaching it to the attachment, since the construction vehicle also cleans others manual attachments such as a shovel. This is supposed to Damage to the fluid coupling can be avoided.
  • the centering sleeves can also be made of plastic or another suitable Material be formed.
  • the actuation of the fluid coupling of the quick-change coupling system according to the invention can also be done pneumatically or electrically.
  • the coupling components can match threaded sections, in particular with a high helix thread, one on top of the other aligned linear movement of the coupling components in a rotary movement at least one of the coupling components can be transferred.
  • This will increase reliability and stability of the connection between the coupling components elevated.
  • the threaded sections cause a due to the self-locking Threaded a reliable fixing of the coupling components together, what is particularly advantageous at high pressures.
  • the connection on the fluid coupling is even more stable.
  • each coupling component with a centering device, in particular a centering sleeve, is formed, the centering devices on one another in this way are coordinated that a guided interlocking of the coupling components takes place, there is a reliable engagement of the coupling components during manufacture the connection achieved.
  • the centering devices guide the coupling elements of the coupling components are aligned and aligned with one another before these effectively slide on each other. This enables coupling errors to be avoided even better become. Damage to the coupling components is also caused of an inexact meshing prevented even more reliably. This increases the reliability and longevity of the fluid coupling continue.
  • the centering device consists of a hardened and / or ground Metal are formed, they are characterized by even greater durability and reliability out. In particular, this can cause inaccuracies when meshing of the coupling components can also be effectively prevented in the long term because Wear of the centering devices can be avoided.
  • At least one of the coupling components is one elastic device, in particular at least one rubber spring, which serves, the deformable or positionally adjustable coupling component in one keep middle position. This ensures that each coupling component at an intended connection to an attachment in a neutral middle position and therefore the maximum range for compensating tolerances in each direction given is.
  • a clutch component for example, remains in one Leaning due to the conditions of a previous attachment can can be avoided even more effectively.
  • the coupling components are each formed with a mounting plate are which can be coupled to the machine-side coupling or to the tool simple retrofitting of existing coupling systems is made possible.
  • the quick-change coupling system 1 according to the invention can also be used on others Vehicles such as trucks, etc. or on tools such as hydraulic hammers etc. are used.
  • the invention also provides a fluid coupling that is independent of Quick-change coupling system 1 according to the invention or the work machines explained can be applied.
  • the fluid coupling can therefore be used on any Apply fluid connection arrangements.
  • the invention thus creates a work machine and in particular a quick-change clutch system 1 for a work machine, which for coupling different pressure medium driven tools 4 is used.
  • the quick change coupling system 1 has a mechanical coupling 2 and a fluid coupling 3 or 5 on. After the mechanical clutch has been closed, the clutch components are in place 31 and 32 or 51 and 52 of the fluid coupling 3 or 5 in a predetermined Distance and ideally aligned with each other. According to the invention is then one of the Coupling components towards the other coupling component to achieve the closed position of the clutch 3 and 5 movable, and in this movement hydraulically driven.
  • the invention provides a work machine or a quick-change clutch system 1 for a work machine in which a fluid coupling is independent can be operated by a mechanical clutch, each Individual connection of the fluid coupling can be actuated separately and the coupling components adjustable to compensate for misalignment, especially by means of spherical bearings are held.
  • This ensures that assembly tolerances between several Individual connections of a fluid coupling have no effect on the quality of the Exercise coupling.
  • misalignment is achieved reliably balanced between the coupling components by means of the spherical bearings can be. This further ensures that the size of the offset of the Coupling components have no significant influence on the force required Establishing the connection or on the accuracy of the connection has.
  • the Fluid coupling according to the invention or the quick-change coupling system according to the invention and a working machine equipped with it are therefore distinguished due to low maintenance and repair work with great reliability and Lifespan. It is also possible to use attachments driven by pressure medium 4 to be fully automatically coupled to a work machine. The personnel and Time spent decoupling one attachment and coupling another Attachment to the work machine is significantly reduced.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Mining & Mineral Resources (AREA)
  • Civil Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Structural Engineering (AREA)
  • Quick-Acting Or Multi-Walled Pipe Joints (AREA)
  • Soil Working Implements (AREA)
  • Electrical Discharge Machining, Electrochemical Machining, And Combined Machining (AREA)
  • Agricultural Machines (AREA)
  • Lifting Devices For Agricultural Implements (AREA)
EP99110562A 1998-06-05 1999-06-01 Machine de travail Expired - Lifetime EP0963688B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE29810118U DE29810118U1 (de) 1998-06-05 1998-06-05 Arbeitsmaschine
DE29810118U 1998-06-05

Publications (3)

Publication Number Publication Date
EP0963688A2 true EP0963688A2 (fr) 1999-12-15
EP0963688A3 EP0963688A3 (fr) 2001-09-26
EP0963688B1 EP0963688B1 (fr) 2004-11-17

Family

ID=8058161

Family Applications (1)

Application Number Title Priority Date Filing Date
EP99110562A Expired - Lifetime EP0963688B1 (fr) 1998-06-05 1999-06-01 Machine de travail

Country Status (3)

Country Link
EP (1) EP0963688B1 (fr)
AT (1) ATE282294T1 (fr)
DE (2) DE29810118U1 (fr)

Cited By (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1329559A3 (fr) * 2002-01-08 2003-10-29 Thomas Sauer Dispositif d'attache rapide pour engins de travail
EP1388616A1 (fr) * 2002-08-09 2004-02-11 Jürgen NAGLER Dispositif pour accoupler et découpler les embouts de conduites d'alimentation en fluide
EP1473415A1 (fr) * 2003-04-30 2004-11-03 Ateliers de Construction du Beaujolais Dispositif sécurisé de verrouillage hydraulique d'attaches rapides et de connexions hydrauliques associées, pour un coupleur
EP1566490A1 (fr) * 2004-02-23 2005-08-24 WIMMER, Alois Arrangement pour raccorder des conduites d'énergie, notamment des conduites de pression
WO2005093172A1 (fr) * 2004-03-24 2005-10-06 Lehnhoff Hartstahl Gmbh & Co. Dispositif de changement rapide comprenant un couplage hydraulique pour des supports situes sur un appareil de construction
WO2005093171A1 (fr) 2004-03-24 2005-10-06 Lehnhoff Harstahl Gmbh & Co. Dispositif de changement rapide comprenant un couplage hydraulique pour des supports situes sur un appareil de construction
EP1840276A2 (fr) * 2006-03-27 2007-10-03 Baumaschinentechnik Gesellschaft m.b.H. Attache rapide pour engins de travaux publics
WO2008151334A1 (fr) * 2007-06-13 2008-12-18 Josef Martin Gmbh & Co Kg Accouplement pour machines de travail
EP2378005A1 (fr) * 2010-04-16 2011-10-19 Lehnhoff Hartstahl GmbH & Co. KG Attache rapide pour l'accouplement d'un outil sur une machine de travail
US9873998B2 (en) 2014-01-29 2018-01-23 Bauer Maschinen Gmbh Mast arrangement and method for connecting a tool unit to a mast carriage of a mast arrangement
WO2019081831A1 (fr) * 2017-10-26 2019-05-02 Groupe Mecalac Dispositif de connexion automatique entre un outil et un porte-outil d'engin de chantier ou de travaux publics

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE10159417C2 (de) * 2001-03-09 2003-12-11 Liebherr Hydraulikbagger Schnellkupplung
PL200100B1 (pl) 2001-03-09 2008-12-31 Liebherr Hydraulikbagger Szybkozłącze
DE102006023420B4 (de) * 2006-05-17 2013-02-28 Lehnhoff Hartstahl Gmbh & Co. Kg Schnellwechselvorrichtung
US20110262212A1 (en) 2008-11-27 2011-10-27 Caterpillar Work Tools B.V. Work tool coupling arrangement

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DE4412115A1 (de) 1994-04-08 1995-10-12 Deere & Co Vorrichtung zum Anschluß einer Ausrüstung an eine Maschine, insbesondere eines Erntevorsatzes an eine Erntemaschine

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GB1490087A (en) * 1974-11-06 1977-10-26 Martin W Work implement couplings
DE3135150C1 (de) * 1981-09-04 1983-01-13 Liebherr-Hydraulikbagger Gmbh, 7951 Kirchdorf Kupplung zum Ankuppeln von Arbeitsgeräten an Stiele von Hydraulikbaggern
DE4132889A1 (de) * 1990-10-05 1992-04-09 Erwin Roeder Vorrichtung zum kuppeln eines antriebsfahrzeugs, insbes. schleppers, mit einem vom antriebsfahrzeug zu tragenden oder zu ziehenden geraet, wie anbaugeraet oder anhaenger
SE467742B (sv) * 1991-09-06 1992-09-07 Sonerud John Teodor Anordning foer snabbkoppling av ett redskap till en graevmaskin med samtidig anslutning till ett drivsystem

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DE4412115A1 (de) 1994-04-08 1995-10-12 Deere & Co Vorrichtung zum Anschluß einer Ausrüstung an eine Maschine, insbesondere eines Erntevorsatzes an eine Erntemaschine

Cited By (20)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1329559A3 (fr) * 2002-01-08 2003-10-29 Thomas Sauer Dispositif d'attache rapide pour engins de travail
EP1388616A1 (fr) * 2002-08-09 2004-02-11 Jürgen NAGLER Dispositif pour accoupler et découpler les embouts de conduites d'alimentation en fluide
EP1473415A1 (fr) * 2003-04-30 2004-11-03 Ateliers de Construction du Beaujolais Dispositif sécurisé de verrouillage hydraulique d'attaches rapides et de connexions hydrauliques associées, pour un coupleur
EP1566490A1 (fr) * 2004-02-23 2005-08-24 WIMMER, Alois Arrangement pour raccorder des conduites d'énergie, notamment des conduites de pression
DE102004014824B4 (de) 2004-03-24 2019-08-01 Lehnhoff Hartstahl Gmbh Schnellwechselvorrichtung mit einer hydraulischen Kupplung für die Medien an einem Baugerät
WO2005093172A1 (fr) * 2004-03-24 2005-10-06 Lehnhoff Hartstahl Gmbh & Co. Dispositif de changement rapide comprenant un couplage hydraulique pour des supports situes sur un appareil de construction
WO2005093171A1 (fr) 2004-03-24 2005-10-06 Lehnhoff Harstahl Gmbh & Co. Dispositif de changement rapide comprenant un couplage hydraulique pour des supports situes sur un appareil de construction
EP1840276A2 (fr) * 2006-03-27 2007-10-03 Baumaschinentechnik Gesellschaft m.b.H. Attache rapide pour engins de travaux publics
EP1840276A3 (fr) * 2006-03-27 2008-06-11 Baumaschinentechnik Gesellschaft m.b.H. Attache rapide pour engins de travaux publics
WO2008151334A1 (fr) * 2007-06-13 2008-12-18 Josef Martin Gmbh & Co Kg Accouplement pour machines de travail
EP2378005A1 (fr) * 2010-04-16 2011-10-19 Lehnhoff Hartstahl GmbH & Co. KG Attache rapide pour l'accouplement d'un outil sur une machine de travail
US9873998B2 (en) 2014-01-29 2018-01-23 Bauer Maschinen Gmbh Mast arrangement and method for connecting a tool unit to a mast carriage of a mast arrangement
FR3072981A1 (fr) * 2017-10-26 2019-05-03 Groupe Mecalac Dispositif de connexion automatique entre un outil et un porte-outil d'engin de chantier ou de travaux publics
WO2019081831A1 (fr) * 2017-10-26 2019-05-02 Groupe Mecalac Dispositif de connexion automatique entre un outil et un porte-outil d'engin de chantier ou de travaux publics
CN111279033A (zh) * 2017-10-26 2020-06-12 麦克拉克集团 用于建筑或公共工程机械的工具与工具架之间自动连接的装置
KR20200072488A (ko) * 2017-10-26 2020-06-22 그룹 미칼락 건설 또는 공공 작업 기계의 공구와 공구 홀더 사이의 자동 연결을 위한 장치
JP2021509702A (ja) * 2017-10-26 2021-04-01 グループ・メカラック 建設または公共工事機械の工具と工具ホルダとの間の自動接続のための装置
CN111279033B (zh) * 2017-10-26 2022-04-08 麦克拉克集团 用于建筑或公共工程机械的工具与工具架之间自动连接的装置
US11560688B2 (en) 2017-10-26 2023-01-24 Groupe Mecalac Device for automatic connection between a tool and a tool holder of a construction or public works machine
AU2018356833B2 (en) * 2017-10-26 2024-03-21 Groupe Mecalac Device for automatic connection between a tool and a tool holder of a construction or public works machine

Also Published As

Publication number Publication date
DE29810118U1 (de) 1998-10-29
DE59911070D1 (de) 2004-12-23
ATE282294T1 (de) 2004-12-15
EP0963688B1 (fr) 2004-11-17
EP0963688A3 (fr) 2001-09-26

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