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
  • E02F3/3654—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
  • E02F3/28—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
  • E02F3/3663—Devices to connect tools to arms, booms or the like of the quick acting type, e.g. controlled from the operator seat hydraulically-operated
• • E—FIXED CONSTRUCTIONS
  • E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
  • E02F—DREDGING; SOIL-SHIFTING
  • E02F9/00—Component parts of dredgers or soil-shifting machines, not restricted to one of the kinds covered by groups E02F3/00 - E02F7/00
  • E02F9/20—Drives; Control devices
  • E02F9/22—Hydraulic or pneumatic drives
  • E02F9/2221—Control of flow rate; Load sensing arrangements
  • E02F9/2232—Control of flow rate; Load sensing arrangements using one or more variable displacement pumps
• • E—FIXED CONSTRUCTIONS
  • E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
  • E02F—DREDGING; SOIL-SHIFTING
  • E02F9/00—Component parts of dredgers or soil-shifting machines, not restricted to one of the kinds covered by groups E02F3/00 - E02F7/00
  • E02F9/20—Drives; Control devices
  • E02F9/22—Hydraulic or pneumatic drives
  • E02F9/225—Control of steering, e.g. for hydraulic motors driving the vehicle tracks
• • E—FIXED CONSTRUCTIONS
  • E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
  • E02F—DREDGING; SOIL-SHIFTING
  • E02F9/00—Component parts of dredgers or soil-shifting machines, not restricted to one of the kinds covered by groups E02F3/00 - E02F7/00
  • E02F9/20—Drives; Control devices
  • E02F9/22—Hydraulic or pneumatic drives
  • E02F9/2278—Hydraulic circuits
  • E02F9/2292—Systems with two or more pumps
• • E—FIXED CONSTRUCTIONS
  • E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
  • E02F—DREDGING; SOIL-SHIFTING
  • E02F9/00—Component parts of dredgers or soil-shifting machines, not restricted to one of the kinds covered by groups E02F3/00 - E02F7/00
  • E02F9/20—Drives; Control devices
  • E02F9/22—Hydraulic or pneumatic drives
  • E02F9/2278—Hydraulic circuits
  • E02F9/2296—Systems with a variable displacement pump
• • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
  • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
  • F04D—NON-POSITIVE-DISPLACEMENT PUMPS
  • F04D13/00—Pumping installations or systems
  • F04D13/02—Units comprising pumps and their driving means
• • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
  • F15—FLUID-PRESSURE ACTUATORS; HYDRAULICS OR PNEUMATICS IN GENERAL
  • F15B—SYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL; FLUID-PRESSURE ACTUATORS, e.g. SERVOMOTORS; DETAILS OF FLUID-PRESSURE SYSTEMS, NOT OTHERWISE PROVIDED FOR
  • F15B11/00—Servomotor systems without provision for follow-up action; Circuits therefor
  • F15B11/16—Servomotor systems without provision for follow-up action; Circuits therefor with two or more servomotors
  • F15B11/161—Servomotor systems without provision for follow-up action; Circuits therefor with two or more servomotors with sensing of servomotor demand or load
• • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
  • F15—FLUID-PRESSURE ACTUATORS; HYDRAULICS OR PNEUMATICS IN GENERAL
  • F15B—SYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL; FLUID-PRESSURE ACTUATORS, e.g. SERVOMOTORS; DETAILS OF FLUID-PRESSURE SYSTEMS, NOT OTHERWISE PROVIDED FOR
  • F15B2211/00—Circuits for servomotor systems
  • F15B2211/20—Fluid pressure source, e.g. accumulator or variable axial piston pump
  • F15B2211/205—Systems with pumps
  • F15B2211/20507—Type of prime mover
  • F15B2211/20523—Internal combustion engine
• • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
  • F15—FLUID-PRESSURE ACTUATORS; HYDRAULICS OR PNEUMATICS IN GENERAL
  • F15B—SYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL; FLUID-PRESSURE ACTUATORS, e.g. SERVOMOTORS; DETAILS OF FLUID-PRESSURE SYSTEMS, NOT OTHERWISE PROVIDED FOR
  • F15B2211/00—Circuits for servomotor systems
  • F15B2211/20—Fluid pressure source, e.g. accumulator or variable axial piston pump
  • F15B2211/205—Systems with pumps
  • F15B2211/2053—Type of pump
  • F15B2211/20546—Type of pump variable capacity
• • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
  • F15—FLUID-PRESSURE ACTUATORS; HYDRAULICS OR PNEUMATICS IN GENERAL
  • F15B—SYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL; FLUID-PRESSURE ACTUATORS, e.g. SERVOMOTORS; DETAILS OF FLUID-PRESSURE SYSTEMS, NOT OTHERWISE PROVIDED FOR
  • F15B2211/00—Circuits for servomotor systems
  • F15B2211/70—Output members, e.g. hydraulic motors or cylinders or control therefor
  • F15B2211/705—Output members, e.g. hydraulic motors or cylinders or control therefor characterised by the type of output members or actuators
  • F15B2211/7051—Linear output members
  • F15B2211/7053—Double-acting output members
• • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
  • F15—FLUID-PRESSURE ACTUATORS; HYDRAULICS OR PNEUMATICS IN GENERAL
  • F15B—SYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL; FLUID-PRESSURE ACTUATORS, e.g. SERVOMOTORS; DETAILS OF FLUID-PRESSURE SYSTEMS, NOT OTHERWISE PROVIDED FOR
  • F15B2211/00—Circuits for servomotor systems
  • F15B2211/70—Output members, e.g. hydraulic motors or cylinders or control therefor
  • F15B2211/71—Multiple output members, e.g. multiple hydraulic motors or cylinders

Definitions

• the present invention relates to a hydraulic system for a vehicle and a vehicle having such a hydraulic system.
• Hydraulic systems are provided in utility and towing vehicles to lift, drive, or control attachments.
• hydraulic systems may be provided for power lift packages with position controllers for the implements or for steering hydraulics.
• Hydrostatic driving and working drives of forestry machines are also operated with hydraulic systems.
• hydraulic systems are provided for a tilting hydraulic system, for tail lifts, for steering aids (power steering), for clutch and brake actuation and, for example, for hydrostatic travel drives.
• EP 2 784 223 A2 discloses a vehicle with an attachment coupling and an attachment therefor.
• a load-controlled hydraulic pump continuously traveling with an engine of the vehicle, which receives hydraulic fluid from a reservoir and discharges it to a high-pressure region, whereby an attachment with hydraulic fluid or energy can be supplied via a power beyond port.
• a shut-off valve for the power beyond connection is provided.
• a hydraulic control arrangement is known. This has a pump which can supply eg several consumers with pressure medium, wherein the control arrangement has a power beyond connection to which at least one power beyond consumer can be connected, wherein the setting of the inlet pressure compensator in dependence from the largest of the load pressures of the consumer, wherein the pump is a pump with adjustable flow rate, which is controllable in dependence on the setting of the inlet pressure compensator.
• the pump is a pump with adjustable flow rate, which is controllable in dependence on the setting of the inlet pressure compensator.
• Object of the present invention is to provide an improved hydraulic system for a vehicle, which has a high reliability and improved efficiency.
• a hydraulic system for a vehicle which has a vehicle hydraulic circuit, among others. for hydraulic supply of connecting means of a coupling device, and also comprises a working hydraulic circuit for supplying at least one power beyond clutch, wherein the vehicle hydraulic circuit and the working hydraulic circuit are formed independently of each other and each have their own hydraulic pump.
• the vehicle hydraulic circuit is used, on the one hand to perform the coupling between the vehicle and an attachment and to make sure in the coupling that the vehicle steered and the hydropneumatic suspension can be operated for level control. This is important because during the connection and coupling process, the vehicle should be steered and also raised or lowered to bring the level of a stationary implement into line with the level of the vehicle.
• the inventive design allows a significantly higher performance and a significantly improved efficiency.
• the design according to the invention with a second hydraulic pump for the working cycle, it is possible to optimally apply hydraulic fluid to the power beyond clutch, so that it is possible to work without appreciable pressure loss.
• Existing valves in the prior art restrict the flow and thus the performance or build so large that they can not be installed properly.
• the vehicle according to the invention comprises a coupling device for connecting the vehicle to a correspondingly designed coupling device of an attachment and a vehicle hydraulic circuit for the hydraulic supply of connecting means, wherein the connecting means are adapted to connect a coupling device of the vehicle with a correspondingly formed coupling device of an attachment and a working hydraulic circuit for supplying at least one power beyond clutch, wherein the vehicle hydraulic circuit and the working hydraulic circuit are formed independently of each other and each having a hydraulic pump.
• a coupling of at least one power beyond clutch can be done in this way in about zero pressure at a standby pressure of about 20 bar.
• a load pressure in a pull-in hook cylinder activates the pump via a load-signaling line.
• the power beyond clutch is pressurized during the coupling process. This would damage the power beyond clutch during the dome process because it can not be switched pressure-free.
• an additional valve would be required which would have to be very large due to the high pump performance and / or generate additional pressure losses and thus contradicts the basic idea of the power beyond system.
• the vehicle hydraulic pump in addition to the docking valve block, also supplies the axle steering and in particular a rear axle steering and a hydropneumatic suspension of a running gear. This allows the vehicle to be steerable during the coupling process and, moreover, to raise or lower the vehicle relative to the level of the on-board coupling device to equalize the coupling elements.
• the docking valve block is not active anyway in the working mode of the vehicle and can not influence the suspension and steering.
• An attachment-side coupling plate is connected by pulling a docking insert by means of the corresponding retraction hooks in a docking receptacle with the vehicle-mounted coupling plate.
• the hydraulic supply of the retractable hooks is done by a vehicle hydraulic circuit.
• An on-vehicle working hydraulic pump is in a stand-by mode during docking between docking receptacle and docking bay.
• the inventive concept is advantageous in that it can be dispensed with an isolation valve between power beyond clutch and working hydraulic pump, since this valve would either be made very large or would produce large pressure losses, which contradicts the meaning of a power beyond connection.
• a significant advantage of the invention over the prior art is the fact that the mechanical coupling of the attachment and the fluidic coupling of the attachment by the two separate hydraulic circuits can be done simultaneously because the hydraulic circuit for the attachment is depressurized, so no Damage to the couplings takes place.
• the vehicle hydraulic circuit is available for any necessary vehicle corrections through steering movements or up and down movements, so that overall the coupling process can take place in a significantly improved manner.
• FIG. 1 shows a schematic representation of a hydraulic system according to the invention
• FIG. 2 is a side sectional view of two coupling plates with a valve block
• FIG. 3 is a perspective view of a docking receiver
• FIG. 4 a side view of the docking receptacle
• Figure 5 a top view from the front of the docking receptacle
• FIG. 6 a top view of the docking receptacle.
• FIG. 7 is a perspective view of a docking drawer;
• FIG. 8 is a front view of the docking drawer
• FIG. 9 is a side elevational view of the docking drawer
• FIG. 10 is a top view from above of the docking drawer, a perspective partial exploded view of a wedge fork with hydraulic cylinder and a locking device, a further perspective partial exploded view of the wedge fork with hyd raulikzylinder and the locking device,
• Figure 13 an exploded perspective view of a clutch plate and a
• a hydraulic system 120 is provided for a vehicle.
• the hydraulic system 120 includes a working hydraulic circuit 121 and a vehicle hydraulic circuit 122 independently formed therefrom.
• a vehicle equipped therewith comprises a coupling device for connecting the vehicle to a correspondingly designed coupling device of an attachment.
• the coupling device of the vehicle is a docking receptacle 31 and the coupling device of the attachment is a docking insert 32. These are described in more detail below.
• the docking insert 32 has coupling bushes 123 of an implement-side working fluid control circuit and coupling bushings 124 of an implement-side power beyond connection.
• the docking receptacle 31 of the vehicle has according to coupling plug 125 of a vehicle-side working hydraulic control circuit 126, which are coupled to a valve block 115. Furthermore, 31 coupling plug 127 are provided for the power Beyond- connection to the docking receptacle.
• the coupling plugs 127 for the power beyond connection are connected via lines 128 to a variable displacement pump of the hydraulic circuit or a working hydraulic pump 129.
• This working hydraulic pump 129 is inseparably connected to a crankshaft 130 of a motor 131 and is supplied therewith with the power necessary for operation.
• the working hydraulic pump 129 is actuated by a load-signaling controller 132 via a corresponding load-signaling line 133. Regardless of the working hydraulic circuit 121, the vehicle hydraulic circuit 122 is formed.
• the vehicle hydraulic circuit 122 also includes a vehicle hydraulic pump 135, which is likewise designed as a variable displacement pump and is connected via a further load signaling line 136 to a valve block 137 of the docking system.
• This vehicle hydraulic pump 135 is also inseparably connected to the crankshaft 130 of the engine 131 and is supplied by the latter with the energy required for operation.
• the vehicle hydraulic pump 135 is connected via at least one hydraulic line to a valve block for loading cylinders for catch hooks of the docking receptacle 31 and a locking device.
• a working hydraulic pump is in stand-by mode during the coupling process.
• a and B couplings are relieved against tank.
• An implement side clutch plate 100 includes an electric clutch 138, an electronic clutch, a DW controller 139, a centering recess 141, and a power beyond clutch 140.
• a vehicle-side clutch plate 100 also has the aforementioned connections. Furthermore, a valve block 137, a connection for a main supply of the working hydraulics 143 and a supply line for the valve block 142 are provided on this coupling plate 100.
• the vehicle-side clutch plate 100 consists of a preassembled plate in the on the device side electrical plug, hydraulic couplings and compressed air couplings and centering pins for fine centering the device-side counter plate are installed.
• the valve block On the vehicle side, the valve block is flanged with up to 6 double-acting hydraulic control units.
• the multi-coupler is hydraulically designed so that only the pressure, tank and load signaling lines are connected for the working hydraulics. The lines between these main connections and the couplings of the power beyond system and the supply of the valve block are integrated in the plate.
• the plate is firmly screwed to the vehicle-side docking mount.
• the implement side clutch plate 100 includes the corresponding mating connectors and couplings and rests on the rear side on a flat surface on the docking tray (metal on metal). For vehicle transverse and vertical axis, the plate is movably mounted on rubber elements. This allows the plate to be fine centered via bores corresponding to the vehicle-side centering pins to achieve the precise alignment required by the hydraulic couplings (in the range of 0.05 mm).
• a coupling plate 100 is provided for forming electrical, electronic, hydraulic and / or pneumatic connections.
• This coupling plate 100 comprises an approximately planar base plate 101.
• This base plate 101 may be provided with a plurality of electrical, electronic, hydraulic and / or pneumatic and mechanical connecting elements. At least two hydraulic connection devices 113 are formed on the base plate 101.
• At least one electronic connection device 102 for providing an electronic connection between a control device of a vehicle and a control device of a vehicle is provided on the base plate 101. This electronic connection is used to identify the type of module or the trailer or the attachment.
• At least one electrical connection device 103 is arranged on the base plate 101.
• This electrical connection means is for operating a light (e.g., brake, front, rear, position or warning light) on the attachment module.
• two electrical control contacts 104 are electrically connected to each other by coupling the docking console 32 to the docking receptacle 31 to detect whether the docking bay 32 has fully retracted into the docking receptacle 31 and a securing and / or locking device can be activated.
• the coupling plate has a centering device 105.
• This centering device 105 includes, when the coupling plate 100 is provided for the docking receptacle 31, at least two centering pins 106, wherein corresponding to a coupling plate of the docking insert 32, the corresponding ZentrierausEnglishept 107 are formed.
• the centering device comprises at least two coupling (centering pins 106) and / or counter-coupling elements (centering recess 107). Furthermore, in a coupling plate 100 three connecting holes 108 for connecting the coupling plate 100 with a docking insert 32 or a docking receptacle 31 are provided.
• tubular plastic bushings 109 and rubber bearings are provided, can be arranged from an elastic material to allow a small clearance and thus to increase the precision when connecting two coupling plates.
• connecting means 111 such as e.g. Screws, arranged to the clutch plate 100 with a coupling device, such as. connect to a docking jar 32 or a docking receptacle.
• the plastic bushings 109 form a bearing device 112 in connection with the connection means 111.
• a vehicle-side coupling plate 100 comprises the approximately planar base plate 101, in the attachment side electrical connection means 103 and / or electronic connection means 102, such as. Electrical plugs 102, hydraulic connection devices 113, such as e.g. Hydraulic couplings 113, and pneumatic couplings 114, e.g. Compressed air couplings and centering pins 106 are integrated for fine centering of the attachment-side coupling plate.
• valve block 115 with up to six double-acting hydraulic control units (not shown) is flanged.
• the clutch plate 100 is hydraulically designed so that only the pressure, tank and load signaling lines are connected for a working hydraulics.
• the line between these main terminals and the clutches of a power beyond system and the supply of the valve block 115 is integrated in the base plate 101.
• the base plate 101 is bolted via connection means 111 fixed to a vehicle-side docking receptacle 31.
• the device-side coupling plate 100 on the docking insert comprises the corresponding counterplugs and couplings and is fixedly connected to a docking insert 32 via the mounting device 112 or the plastic bushings 109 and the connection means 111.
• the bearing device 112 is thus designed to provide a slight play of the coupling plate in a vertical and a horizontal plane with respect to a coupling device. This allows the clutch plate 100 to fine center on the plastic bushes 109 and rubber bushings and the holes provided therein relative to the vehicle-side centering pin 106 in order to achieve a required for the hydraulic coupling precise alignment in the range of 0.05 mm.
• Air brake for detachable additional axle modules and / or trailers or attachments Air brake for detachable additional axle modules and / or trailers or attachments.
• connection of two coupling plates 100 according to the invention takes place by connecting a docking insert 32 to a docking receptacle 31.
• a docking receptacle 31 (coupling device) of a docking device 30 (coupling device) for accommodating a docking insert 32 (coupling device) will be described by way of example with reference to an exemplary embodiment.
• the docking receptacle 31 comprises an approximately U-shaped pre-centering device 33 with an insertion trough 35 tapering approximately in an insertion direction 34 for pre-centering a docking insert 32 corresponding to the docking receptacle.
• first and one second centering device 36, 37 are provided on the docking receptacle 31, wherein the first and second centering devices 36, 37 each comprise two coupling elements and / or counter-coupling elements for connecting to corresponding coupling elements and / or counter-coupling elements of a docking insert 32 ,
• first and the second centering devices 36, 37 are designed for centering the docking insert 32 with respect to the docking receptacle 31 along four centering axes 38 corresponding to the four coupling or counter coupling elements in the insertion direction 34.
• the docking receptacle 31 comprises a retraction device with two hydraulically actuable catch hooks 44 for retracting the docking insert 32 into the docking receptacle 31 in the insertion direction 34.
• the docking receptacle 31 comprises two docking walls 39, 40 extending in the vertical direction and arranged offset from one another in the horizontal direction.
• a first docking wall 39 in the vertical direction in the region below the insertion trough 35 and a second docking wall as a boundary of the insertion trough 35 in the horizontal direction above the insertion trough 35 are arranged.
• the insertion trough takes over the task of pre-centering when inserting a docking insert into the docking receptacle by receiving a body corresponding to the insertion trough 35 of the docking insert 32.
• the geometry of the insertion trough 35 tapers in the insertion direction 34 in order to enable pre-centering of the docking insert.
• inner and outer side walls 41, 42 are provided on both sides of the insertion trough 35, transverse to the insertion direction 34 extending in the vertical direction. These inner and outer side walls 41, 42 are arranged at a predetermined angle in the insertion direction 34 such that a receiving space 43, bounded by the inner side walls 41 and the insertion trough 35, tapers in the insertion direction.
• catch pin guides 45 are formed, which are provided for guiding and receiving corresponding, designed on a docking insert 32 fishing peg.
• shafts are arranged in corresponding holes on which the catch hooks 44 are rotatably mounted.
• the fishing hooks are arranged in a limited by the inner and outer side walls Fanghakenraum.
• the fishing hooks are actuated by corresponding fishing hook cylinders 46.
• sleeve-shaped centering pin receptacles 47 (counter-coupling elements) are provided, which form the first centering device 36 of the docking receptacle 31.
• the first docking wall 39 In the insertion direction 34, first the first docking wall 39 is provided which has two bores 48 for receiving the bush-shaped centering pin receivers 47. In the holes 48, the bush-shaped Zentrierzapfenagen 47 are arranged.
• the bush-shaped centering pin receptacles 47 are thus arranged in the insertion direction 34 behind the first docking wall 39.
• the bush-shaped centering pin receptacles 47 comprise in the insertion direction 34 a tubular insertion / centering section 49 and a securing section 54.
• the tubular insertion / centering section 49 has a conically tapered insertion recess 50, wherein a vertical end face arranged opposite to the insertion direction 34 protrudes from the first docking wall 39 and forms a first axial stop surface 51 of a first stop device 52.
• a first axial stop surface 51 In this annular first stop surface 51 are radially circumferentially and equally spaced dirt removal grooves 53 formed for receiving and removing impurities.
• the tubular insertion / centering section 49 has a cylindrical centering recess 55 adjoining the insertion recess in the insertion direction 34.
• the tubular securing section 57 has bores 56 for connecting to the first docking wall 39, for example by means of corresponding screw connections, on an annular end face opposite to the insertion direction 34.
• This end face has a larger diameter than the tubular insertion / centering portion 49 and in this way forms a radially circumferential stop shoulder, which prevents displacement of the bush-shaped centering receptacle against the insertion direction 34.
• This embodiment has the advantage that the longitudinal forces which are introduced on the one hand by attachments and on the other hand are superimposed by the wedge forces of the wedge forks need not be introduced via a screw in the docking receptacle.
• a tubular securing portion 57 extending in the vertical direction grooves 58 for receiving hydraulically actuated wedge forks 59 are present.
• the wedge forks 59 are provided for fixing a corresponding centering pin of a docking insert 32 and are displaceable in the vertical direction from a release position into a fixing position.
• the wedge forks 59 thus form an axial securing device 60.
• a drive shaft connecting device 67 is a part of a drive shaft connecting device for connecting a vehicle-side end of a drive shaft with a implement-side end of a drive shaft.
• a recess 66 for receiving a coupling plate for providing electrical, electronic, hydraulic and / or pneumatic connections between a vehicle and an attachment is formed in the second docking wall 40.
• the coupling plate with flanged valve block can be removed by loosening only four screws for repair very easy and fast against the insertion 34.
• centering pins 61 (coupling elements) extending counter to the insertion direction 34 are provided, which form the second centering device 37 of the docking receptacle 31.
• the centering pins 61 have, in the insertion direction 34b, a conical insertion section 62 and an adjoining cylindrical centering section 63.
• a circular vertical end face adjoining the centering section 63 in the insertion direction 34 forms a second stop surface 64 of a second stopper device 65.
• the coupling elements and / or the negative feedback elements of the first and the second centering device thus form at least two axial stop devices, which limit a relative movement between the docking receptacle and the docking insert in the insertion direction.
• the stops are preferably formed on the first and / or second centering pins and / or on the first and / or second centering recesses extending in a plane perpendicular to the insertion extending annular abutment surfaces.
• a PTO connection device 68 is provided in the area between the two centering pins 66.
• a PTO connecting device 68 is a part of a PTO connecting device for connecting a vehicle-side end of a PTO shaft with a implement side end of a PTO shaft.
• the docking fixture is positioned on a centering shoulder on a central tube flange of a center piece of the axle via a large (diameter approx. 258 mm), machined bore in the first plate on a spigot.
• This precision allows a connecting shaft with splined sleeves to be used for connecting the PTO output of the transmission and the PTO connector. An expensive and above all not maintenance-free connection by means of a cardan shaft is not necessary.
• the docking insert 32 is formed corresponding to the docking receptacle 31.
• the docking insert 32 initially has a first docking wall 70 in the insertion direction 34.
• the first docking wall 70 extends substantially in the vertical direction and has on its underside a bottom wall 89 corresponding to the insertion trough 35 of the docking receptacle 31.
• a drive shaft connecting device is provided approximately centrally on the first docking wall 70.
• first centering pins 71 of a first centering device 72 of the docking insert 32 extending in the insertion direction 34 are formed on the first docking wall 70 of the docking insert 31.
• the first centering pins 71 have, in the insertion direction 34, a cylindrical centering section 73 and an adjoining conical insertion section 74.
• first centering pins 71 against the insertion direction annular first stop surfaces 93, which form a first stop 94 of the first centering device 72.
• Keilgabelinformationnuten 74 In the cylindrical centering 73 are formed extending in the vertical direction and corresponding to the wedge forks 59 formed Keilgabelabilitynuten 74.
• an insertion body 75 extending in the insertion direction is provided for placement in the receiving space 43 of the docking receptacle 31.
• the insertion body 75 In the insertion direction at the front, the insertion body 75 has a second docking wall 76, which extends approximately in the vertical direction.
• corresponding centering pin receptacles 77 of a second centering device 78 of the docking insert 32 are formed in the second docking wall.
• the second docking wall 76 has two bores 80 for receiving the bush-shaped centering pin receptacles 77.
• the bush-shaped centering pin receptacles 77 are arranged.
• the bush-shaped centering pin receptacles 77 comprise a centering section 82 and an insertion section 81 in the insertion direction 34.
• the tubular insertion section 81 has a conically tapered insertion recess 83, wherein an end face arranged opposite to the insertion direction 34 protrudes from the second docking wall 76 and forms a second axial stop face 84 of a second stop device 85.
• annular second abutment surface 85 are formed radially circumferentially and equally spaced from each other Schmutzab technologicalnuten 86 for receiving and removing contaminants.
• the tubular centering section 82 has a cylindrical centering recess 87 adjoining the insertion recess 83, counter to the insertion direction 34.
• a coupling plate receptacle is formed in the area in the vertical direction above the second centering device 78.
• a catch pin shaft 88 extending transversely to the insertion direction 34 is arranged on the insertion body 75. The ends of the shaft form catch pin 89. These catch pins 89 are detected by the catch hooks 44 of the docking receptacle 31 during insertion of the docking insert 32 into the docking receptacle 31 and then the docking insert 32 is pulled into the docking receptacle 32 by means of the hydraulically actuated catch hooks 44, wherein a bottom wall 90 of the insertion body 75 of the docking insert 32 accordingly in the insertion trough 35 of the docking receptacle 31 slides.
• the hydraulic wedge forks also have a second locking device extending transversely to the direction of insertion.
• the second locking device comprises a pneumatically actuated securing body which fixes the wedge forks in the centering pin bushes.
• This second locking can only take place when the hydraulic wedge fork is correctly positioned. Accordingly, a sensor is provided to check the position of the hydraulic wedge fork.
• Kedge forks have the advantage that they are easy to automate.
• the wedge forks are guided in the wedge fork grooves at all times.
• the centering devices or their centering elements pins, bushes
• both the centering pins or centering recesses of the first and the second centering devices are designed in such a way that all four components allow simultaneous centering, since an am Docking insert mounted attachment often has a very high weight and accordingly a precise centering in the axial insertion direction is necessary.
• the following describes a method for docking or inserting the docking drawer into the docking receptacle or a method for connecting a docking drawer to a docking receptacle.
• the insertion body 75 of the docking insert is arranged in the region of the receiving space 43 of the docking receptacle 31, preferably by moving the vehicle and thus the docking receptacle 31 arranged thereon.
• a pre-centering of the docking insert in the docking receptacle takes place on the basis of the sliding of the lower or Einzhouwandung 90 of the docking insert 32 in the insertion trough 35 of the docking receptacle 31st
• the catch hooks 44 of the docking receptacle are actuated by means of the catch hook cylinder 46 and initially lowered in the vertical direction down so that catching recesses 69 of the catch hooks 44 engage behind the catch pins 89 of the docking insert.
• the vehicle hydraulic circuit is used while the power beyond clutch or working hydraulic circuit is in standby.
• the moving of the docking tray into the docking receptacle is thus initially carried out by moving the vehicle. This is a pre-centering.
• the catch hooks then snap in and pull the docking drawer into the docking receptacle in the direction of insertion.
• Two rollers which are rotatably mounted in the docking receptacle, form a slotted guide with a slot in the fishing hook and a track on the top of the fishing hook.
• This slotted guide causes the catch hooks when moving first in the vehicle longitudinal direction and then move upwards. This results in an opening into which the catch pins are inserted when entering the docking insert.
• the hooks move first down and get caught with the catch pin. Then the docking tray is retracted. Subsequently, the catch pins slide along a catch pin guide 45 in the inner side walls 41 of the docking receptacle 31, wherein the catch pins 89 are arranged in the catch pin guide 45 only with little play.
• a further centering of the docking insert 32 in the docking receptacle 31 then takes place via the first and second centering devices 36, 37, 72, 78 of the docking receptacle 31 and the docking insert 32 along the four centering axes 38 the two centering pins 71 of the first centering device 72 of the docking insert 32 with their conical insertion 74 into the conical insertion 50 of the two Zentrierzapfenagen 47 of the first centering 36 of the docking receptacle 31.
• the two centering pins 71 of the first centering device 72 of the docking insert 32 with their cylindrical centering sections 73 slide into the cylindrical centering recesses 55 of the two centering pin receptacles 47 of the first centering device 36 of the docking receptacle 31.
• the movement of the docking insert 32 in the insertion direction 34 towards the docking receptacle 31 is limited by the first stop surfaces 51, 93 of the first stop devices 52, 94 of the first centering device 36, 72. Furthermore, the movement of the docking insert 32 in the insertion direction 34 towards the docking receptacle 31 is limited by the second stop surfaces 64, 84 of the second stop devices 65, 85 of the first centering device 36, 72. Once the stop surfaces 51, 93 of the first stop means 52, 94 and the stop surfaces 64, 84 of the second stop means 65, 85 abut each other, the insertion of the docking insert 32 is limited in the docking receptacle 31 in the axial direction. The docking tray 32 is now fully inserted into the docking receptacle 31.
• 31 electrical contacts are provided both at the docking slot 32 and at the docking receptacle, which contact each other as soon as the docking operation is completed.
• a signal generated in this manner is used to displace the actuating cylinders 95 of the hydraulically actuated wedge forks 59 vertically downwardly such that forks of the wedge forks 59 engage the grooves 58 of the securing section 57 of the first centering pins 71 of the first centering device 72 of the docking insert and in addition to the catch hooks 44, a decoupling of the docking insert 32 from the docking receptacle 31 prevent.
• a pneumatically actuated locking device 91 To secure the Keilgabeln a pneumatically actuated locking device 91 is provided, the corresponding locking pin 96 by trained in the securing portion 57 and the forks of the wedge fork 59 locking holes 97 attach and fix and secure the position of the wedge forks 59 in this way.

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• Engineering & Computer Science (AREA)
• General Engineering & Computer Science (AREA)
• Mining & Mineral Resources (AREA)
• Civil Engineering (AREA)
• Structural Engineering (AREA)
• Mechanical Engineering (AREA)
• Physics & Mathematics (AREA)
• Fluid Mechanics (AREA)
• Hydraulic Clutches, Magnetic Clutches, Fluid Clutches, And Fluid Joints (AREA)
• Fluid-Pressure Circuits (AREA)
• Quick-Acting Or Multi-Walled Pipe Joints (AREA)
• Shovels (AREA)

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• 2017
  • 2017-11-10 DE DE102017126505.8A patent/DE102017126505B4/de active Active
• 2018
  • 2018-11-09 EP EP18804539.7A patent/EP3707311A1/de active Pending
  • 2018-11-09 KR KR1020207016549A patent/KR20200093568A/ko active IP Right Grant
  • 2018-11-09 JP JP2020544137A patent/JP7164616B2/ja active Active
  • 2018-11-09 WO PCT/EP2018/080819 patent/WO2019092206A1/de unknown
  • 2018-11-09 CN CN201880073011.9A patent/CN111328357B/zh active Active
• 2020
  • 2020-05-08 US US16/870,519 patent/US11313100B2/en active Active

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