EP3536952A1 - Connection device of hydraulic pump unit - Google Patents
Connection device of hydraulic pump unit Download PDFInfo
- Publication number
- EP3536952A1 EP3536952A1 EP19157616.4A EP19157616A EP3536952A1 EP 3536952 A1 EP3536952 A1 EP 3536952A1 EP 19157616 A EP19157616 A EP 19157616A EP 3536952 A1 EP3536952 A1 EP 3536952A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- unit
- connection
- connection unit
- machined
- topography
- 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
Links
- 238000012876 topography Methods 0.000 claims abstract description 38
- 239000012530 fluid Substances 0.000 claims description 15
- 238000003754 machining Methods 0.000 claims description 11
- 238000000034 method Methods 0.000 claims description 6
- 238000004519 manufacturing process Methods 0.000 claims description 5
- 230000007704 transition Effects 0.000 claims description 3
- 230000008569 process Effects 0.000 claims description 2
- 238000012545 processing Methods 0.000 description 29
- 238000009434 installation Methods 0.000 description 6
- 238000005520 cutting process Methods 0.000 description 4
- 230000008901 benefit Effects 0.000 description 3
- 238000013461 design Methods 0.000 description 3
- 238000010586 diagram Methods 0.000 description 3
- 239000000945 filler Substances 0.000 description 3
- 239000000463 material Substances 0.000 description 3
- 239000002131 composite material Substances 0.000 description 2
- 238000009423 ventilation Methods 0.000 description 2
- 239000004952 Polyamide Substances 0.000 description 1
- 229910052782 aluminium Inorganic materials 0.000 description 1
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 238000000576 coating method Methods 0.000 description 1
- 238000004891 communication Methods 0.000 description 1
- 150000001875 compounds Chemical class 0.000 description 1
- 230000001419 dependent effect Effects 0.000 description 1
- 239000003365 glass fiber Substances 0.000 description 1
- 239000010720 hydraulic oil Substances 0.000 description 1
- 238000002372 labelling Methods 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 239000007769 metal material Substances 0.000 description 1
- 238000003801 milling Methods 0.000 description 1
- 230000007935 neutral effect Effects 0.000 description 1
- 230000002093 peripheral effect Effects 0.000 description 1
- 239000004033 plastic Substances 0.000 description 1
- 229920002647 polyamide Polymers 0.000 description 1
- 238000002360 preparation method Methods 0.000 description 1
- 238000003672 processing method Methods 0.000 description 1
- 230000009467 reduction Effects 0.000 description 1
- 238000012549 training Methods 0.000 description 1
Images
Classifications
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04B—POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
- F04B53/00—Component parts, details or accessories not provided for in, or of interest apart from, groups F04B1/00Â -Â F04B23/00 or F04B39/00Â -Â F04B47/00
- F04B53/22—Arrangements for enabling ready assembly or disassembly
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04B—POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
- F04B17/00—Pumps characterised by combination with, or adaptation to, specific driving engines or motors
- F04B17/03—Pumps characterised by combination with, or adaptation to, specific driving engines or motors driven by electric motors
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04B—POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
- F04B23/00—Pumping installations or systems
- F04B23/02—Pumping installations or systems having reservoirs
- F04B23/021—Pumping installations or systems having reservoirs the pump being immersed in the reservoir
- F04B23/023—Pumping installations or systems having reservoirs the pump being immersed in the reservoir only the pump-part being immersed, the driving-part being outside the reservoir
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04B—POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
- F04B53/00—Component parts, details or accessories not provided for in, or of interest apart from, groups F04B1/00Â -Â F04B23/00 or F04B39/00Â -Â F04B47/00
- F04B53/16—Casings; Cylinders; Cylinder liners or heads; Fluid connections
Definitions
- the invention relates to a connecting device, comprising a base body having at least two connection units provided with different topographies and functions, which are integrally connected to each other, and which is designed as a master or forming part machined on its outer surfaces at least partially machined.
- connection device is used for example in hydraulic units, which are used as compact units in various types of lifting and lifting equipment for the actuation of lifting cylinders.
- WO 2009/156017 A1 discloses a hydraulic unit, in particular for the supply of conveying and lifting equipment with hydraulic fluid, with a device main axis end-side tank and attached to this functional components, the at least one hydraulic pump and a connector body with a valve device and a conduit arrangement for suction and return of hydraulic fluid has or to the tank.
- the hydraulic unit is designed as a so-called turning unit, in which the inlet end of the suction line of the line arrangement is disposed within the tank at a position at which during operation of the unit with vertical main axis and during operation of the unit with the vertical inclined, preferably vertical, main axis which is the cause of the liquid in the tank.
- connection body is composed of at least one structural unit and at least one further structural unit, wherein the one structural unit is at least partially accommodated in the further structural unit.
- the one structural unit made of a metal material, such as aluminum material, as a die-cast or forged part and the further structural unit made of a plastic material, such as glass fiber reinforced polyamide material.
- the preparation of the connecting device or the connection body is time consuming and costly.
- the machining of the designed as a master or forming part basic body is typically carried out in several processing steps, wherein the main body is held and processed in several positions by re-clamping on a processing machine by means of corresponding holding devices or collets.
- the object of the invention is to simplify the production of a connection device without restricting its functionality, in particular by reducing the number and complexity of the production steps.
- At least one outer surface of the one connection unit is left unprocessed and designed as a possible engagement surface for the engagement of a holding device pivotable about at least one axis, wherein at least one outer surface of the other connection unit is processed more in number than the number of processed outer surfaces of the one connection unit, and wherein these each have a more machined outer surface perpendicular or at a predeterminable angle to at least a portion of the machined outer surfaces of the one connection unit, which are arranged on opposite sides of a connection unit at least partially parallel to each other.
- connection device allows the basic body to be completely machined in only one clamping of a machine arrangement, for example in a cutting machine tool, wherein the holding device as workpiece holder rests defined on the at least one non-machinable contact surface on the base body.
- the main body is a forged or cast blank as a forming or Urformteil.
- the geometry of the at least two terminal units forming the base body is selected such that in one clamping of the base body all exterior surfaces to be machined are accessible from only one processing side of the machine and all connection bores and receptacles for connecting lines and control valves are associated with, preferably machined, Processing steps can be introduced into the body.
- the main body can be obtained in the context of a forming process also from an extruded profile.
- Topography in the sense of the invention means the three-dimensional shape design or the geometry of the respective connection unit. This is with their faces according to the present connection options arbitrarily conceivable, but the faces are part of an overall geometry whose fictitious outer contour forms, for example, a cuboid or a plate, which are known in this respect with cuboid or plate-shaped topography.
- the respective connection unit is selected depending on the configuration of an associated hydraulic pump unit as well as the attachment and installation of the associated components, such as a tank unit, a motor unit and a pump unit and associated control valves, demand-optimized.
- connection and attachment of a motor unit, a pump unit and / or a tank unit of a connection unit and the connection and attachment of control valves and control lines of the other terminal unit spatially associated.
- the two connection units and the respective outer surfaces provided on them are selected and configured to suit individual requirements.
- the at least partially mutually parallel, typically two machined outer surfaces having a connection unit preferably serves to form a support member.
- the more machined outer surfaces having other terminal unit serves to form a control unit.
- the topography of one connection unit is plate-shaped and that of the other connection unit is cuboid, wherein the cuboid topography at one point of the unworked left outer surface of a connection unit, which is released for a possible attack of the holding device, in the other connection unit so integrally passes that the cuboid topography protrudes on at least one side of the plate-shaped topography with a predetermined projection.
- the terminal unit having a plate-like topography is generally used as a carrier part, wherein on one side, typically in the normal installation position above, the motor unit and on another side, typically below, the tank unit and the pump unit are arranged.
- the unprocessed outer surface of the one connection unit is given by an outer surface following the outer peripheral contour of the plate-shaped topography.
- the plate-shaped topography may have a rectangular, preferably square, elliptical or circular cross-section, however, any further cross-sectional shapes are conceivable.
- a substantially circular cross-section of a cylinder is given as the plate-shaped topography for the connection unit.
- connection unit adjoining the untreated outer surface of the connection unit with its parallelepiped topography projects beyond the composite of the tank unit, connection device and motor unit on its side.
- control valves and control terminals are easily accessible from the outside and arranged to save space in a central location.
- connection unit with the plate-shaped topography with its oppositely arranged outer surfaces serves as a functional part for receiving a motor unit or for receiving a pump unit, which is preferably in a tank unit is integrated, wherein the other terminal unit with the cuboid topography serves as a functional part of the at least partially receiving control valves.
- the frontally opposite outer surfaces of a connection unit with the plate-shaped topography are particularly preferably formed substantially flat. This facilitates the installation and attachment of the motor unit and the pump unit on the body.
- structuring such as specially shaped depressions or receptacles, forming surface sections within the respective topography and as a component thereof are provided on the respective outer surface adjacent to the planar surface sections.
- the one terminal unit with its plate-like topography forms an at least partially cylindrical part of the basic body, wherein a center recess is provided concentrically concentrically with this cylindrical outer contour and the one connecting unit, which is provided by a drive shaft of the motor unit, preferably in the form of an electric motor Drive the pump unit is configured as a pressure supply meansteurgreifbar.
- a connection device configured in this way can be arranged in a particularly simple manner on a hydraulic unit which is substantially cylindrical as a whole, wherein preferably the motor unit which has a connection unit with the plate-shaped topography and the tank unit has approximately the same outside diameter.
- connection unit Due to the central recess formed in the associated connection unit, the shaft drive of the motor unit for the hydraulic pump can be guided safely and centrally in the connection device and extends through the tank housing, protected against possible damage, into the interior of the tank. This results in the further advantage of a particularly simple and secure embodiment of a hydraulic pump unit equipped with the connecting device according to the invention.
- the connecting device designed according to the invention is characterized in particular by the fact that all processing steps for machining the base body can be carried out in only one working direction with the cutting machining tool.
- the different processing positions "from the front, from the back and the side" each by a pivoting movement of the pivotable about at least one axis holding device which engages and holds the main body of the unprocessed left attack surface during the entire processing, taken. Due to the one clamping alignment errors are excluded and errors, as they can otherwise occur during re-tightening avoided.
- the spatial arrangement and design of the individual outer surfaces and the topographies of the individual connection units are chosen such that all connection and control lines and installation spaces for associated control valves can be introduced through corresponding holes in machining in the body.
- the associated fluid-carrying branches and intersections result from the introduction of different partial holes from different directions in the respective terminal unit of the body.
- the machining direction is preferably via the feed axis of a rotationally driven tool, such as a drill, milling cutter, etc., specified.
- connection bores each have one in the one connection unit extending connecting bore part and another extending in the other connection unit connecting bore part.
- a connecting bore of the pressure supply of a consumer with fluid under pump pressure and another, at least partially separated from the one connecting hole and branches off from this bore is the return of fluid from the consumer to the tank.
- the connection bore extends from an outer surface at the one connection unit via the location of the transition between the two topographies to an outer surface of the other connection unit.
- the bore part assigned to the connection point for pressure supply and return is introduced into the base body from an outer surface of the other connection unit extending at an angle of preferably 45 ° to the machined outer surface of the one connection unit.
- the holes may have the same or different bore diameter.
- the bores or bore parts have a stepped profile in the end regions assigned to the respective outer surface.
- a receptacle for a pressure limiting valve is provided at a location between the connecting holes of pressure supply and return, which passes through an outer surface of the other terminal unit, which in the present case perpendicular to at least one machined Outer surface of a connection unit runs. It is further advantageous that in the other connection unit in the connection bore, which serves the pressure supply, a receptacle for a check valve opens, which passes through an outer surface of the other terminal unit, which extends parallel to at least one machined outer surface of a connection unit.
- a further valve group which preferably has an electromagnetically actuated proportional valve or other hydraulic valve, a receptacle provided which engages through the outer surface of the other terminal unit which parallel extends to at least one machined outer surface of a connection unit.
- the number and arrangement of the outer surfaces of the other terminal unit, which form the control block for the hydraulic unit with its cuboid topography, is selected such that the valve mounting spaces, formed by receptacles, and the control lines, formed by connecting holes, together with associated intersections in one direction and in a clamping of an associated chip tool can be introduced into the body.
- the holding device holding the base body assumes at least three, preferably four, pivoting positions, wherein the outer surfaces to be machined are aligned perpendicular to the working direction and machined by the cutting tool.
- a special embodiment of the control block formed by the connection device is achieved in that pressure supply and return together share a connection point which emerges on an outer surface of the other connection unit, which at a predetermined angle, preferably of 45 °, to at least one machined outer surface of the one Connection unit runs. It should be noted that a part of the bore for the formation of the connecting bore part for the return during operation of the associated hydraulic unit closed, as is without function. While the one connection unit which accommodates the motor unit, the pump unit and the tank unit only has this receiving or carrier function, all components and associated installation spaces for the hydraulic control are formed in the typically laterally arranged other connection unit. Due to the one-piece design of the base body with the one connection unit and the at least one other connection unit, the arrangement of a separate control block on the receiving or carrier part can be omitted.
- the invention further relates to a hydraulic pump unit with a connection device according to the invention, wherein an electric motor unit on one side and a pump unit, which is preferably integrated in a tank unit, are mounted on the other side of the one connection unit, and wherein at least one control valve for operating the Aggregate is included in the recordings of the other connection unit.
- the invention further relates to a method for producing a connection device according to the invention, wherein by means of a pivotable about at least one axis holding device which an unprocessed outer surface of a connection unit is gripped to by a pivoting operation, for example, 180 ° on various, a machining from only one working direction out in at least three, preferably four, to enable pivotal positions, and thereby to edit the outer surfaces of two terminal units for the later recording of a motor-pump unit together with at least one control valve. Pivoting operations around larger angles than 180 ° are possible.
- the inventive method allows processing of the base body for the connecting device in a clamping of the body, wherein the individual positions for processing of outer surfaces are taken by an associated pivoting movement of the holding device with the base body arranged therein. Processing from only one working direction results in a reduction of complexity and a further saving of time and expense.
- the main body for the connecting device according to the invention is particularly preferably designed such that after the mechanical machining in the context of the inventive method, only the control valves must be used to obtain a ready-connection device for a hydraulic pump unit. Typical areas of application of such hydraulic power units are machine tools or lifting / lowering applications, such as industrial trucks or lifting platforms.
- Fig. 1 shows in a side view of a hydraulic pump assembly 10 with a tank unit 12 and a motor unit 14.
- a housing cover 16 is arranged with a arranged on the right side, rectangular labeling field 18 in the upper region of the motor unit 14.
- the tank unit 12, the motor unit 14 and the housing cover 16 predetermine the substantially cylindrical shape of the hydraulic pump assembly 10.
- the pump unit 10 further comprises a connection device 20, which is arranged in the periphery of its first connection unit 28 sandwiched between the tank unit 12 with a pump unit 42 accommodated in its tank housing and the motor unit 14.
- a filler neck 22 is further arranged for fluid, such as hydraulic oil, which is closed by a cover 14.
- the first connection unit 28 of the connection device 20 is arranged between the tank unit 12 with the pump unit 42 and the motor unit 14 and thus forms a carrier part for all three units 12, 14, 42.
- a second connection unit 30 is arranged laterally on the composite of tank unit 12, first connection unit 28 and motor unit 14 and integrally connected to a radial outer surface of the first connection unit 28 to form the base body of the connection device 20.
- Fig. 1 is the mentioned compound of the two terminal units 28, 30 covered by the filler neck 22 with cover 24.
- the electric motor can be connected by means of two electrical connection points 26a, 26b to a power supply in the usual way.
- first terminal unit 28 performs the function of a support member and the second terminal unit 30, the function of a control part with inserted valves.
- a pressure relief valve 32, a spring-loaded check valve 34, an electromagnetically actuated directional control valve 36 and a flow control valve 38, 48 are arranged as valves of the control part.
- a measuring device 40 is connected to the control part as a pressure transducer. The aforementioned control valves 32, 34, 36, 38 and 48 are inserted into corresponding receptacles of the second connection unit 30 and in Fig. 1 only partially visible.
- the Fig. 2 shows the hydraulic pump unit 10 from Fig. 1 in the top view from above.
- the motor unit 14 which corresponds to the cross-section of the first connection unit 28 of the connection device 20 and the cross section of the tank unit 12, protrude in the radial direction, the electrical connection means 26a, 26b, the filler neck 22 with the cover 24 and the second terminal unit 30 of Connecting device 20 with the control valves 32 to 38 and 48 and the measuring device 40 before.
- a consumer port P for supplying a hydraulic consumer (not shown) provided by the hydraulic pump assembly 10.
- the Fig. 3 shows a circuit diagram of the pump unit 10 with the usual hydraulic symbols for pertinent schematics.
- the electric motor unit 14 drives the pump unit 42 to deliver fluid from the tank unit 12 to the consumer P.
- a filter element 44 is arranged between the tank unit 12 and the pump unit 42.
- the non-return valve 34 is arranged in the fluid line leading from the pump unit 42 to the consumer port P, which is shown spring-loaded in its closed position in the direction of the pump unit 42.
- the measuring device 40 measures the fluid pressure present at the consumer connection P and transmits its ascertaining measured values to a control and computer unit, not shown, which actuates the electromagnetically actuated proportional valve 36.
- the directional control valve 36 blocks the fluid path between the check valve 34 and the consumer port P to the tank side with the tank unit 12 under the influence of its valve spring.
- the further valve position opens the directional control valve 36 and releases the return from the consumer port P to the tank unit 12.
- Fig. 4 shows a perspective view of the connecting device 20, wherein the topographies and functions of the two terminal units 28, 30, the holes introduced into this are shown in dashed lines to illustrate.
- the first connection unit 28 has a substantially plate-shaped topography and a circular cross-section.
- a circular edge surface 50 is part of a first outer surface 52 of the connection unit 28, wherein the first outer surface 52 surrounds a central recess 54 formed coaxially with the cross section of the connection unit 28.
- On the first outer surface 52 are two mounting holes 56a, 56b for fixing the pump unit 42 (see. Fig. 3 ), an opening 58 as a supply or pump port P and a tank port T provided.
- the first outer surface 52 is formed only in the areas surrounding the respective opening 56a, 56b, 58, P, T and on the edge surface 50 lying flat in a plane on the outside of the first connection unit 28. In the remaining sections of the in Fig. 4 shown outside, the topography of the first terminal unit 28 is provided with a recess.
- the opening 58 and the tank connection T each form one end of a connecting bore 60, 60 'or a further bore 62, 62'.
- the bores 60, 60 'and 62, 62' extend in each case in two connection units 28, 30 of the connection device 20.
- a first bore part 60 ', 62' in the first connection unit 28 and a second bore part 60, 62 in the second connection unit 30 running trained and introduced there each by machining.
- the connection bore 60, 60 ' serves to supply pressure from the tank unit 12 (cf. Fig. 3 ) via the pump unit 42 to be connected to the opening 58 (see. Fig. 3 ) to the consumer port P, which is provided on the second terminal unit 30.
- the further bore 62, 62 ' serves a return from the consumer port P to the tank port T, wherein the consumer port P also represents the connection point for the return R, as in the hydraulic circuit diagram of Fig. 3 illustrated.
- the hydraulic medium flows from P, R via the building components 74, 62 and 62 'to T.
- a second outer surface 64, a third outer surface 66 and a fourth outer surface 68, a fifth outer surface 78 and a sixth outer surface 80 are formed.
- the second outer surface 64 is arranged at an angle of approximately 45 ° to the vertical and has the connection P which is allocated to the consumer connection P and the return R as the end of the connection bore 60, 60 '.
- a further opening 76 for forming the second bore part 62 of the further bore 62, 62 ' is provided on the third outer surface 66, which is also penetrated by a horizontally arranged first receptacle 70 for a control valve.
- the machined third outer surface 66 and the unprocessed sixth outer surface 80 are each vertically arranged.
- the fourth and the fifth outer surface 68, 78 disposed horizontally.
- the fourth outer surface 68 is disposed in an upper horizontal plane substantially corresponding to the plane receiving the first outer surface 52 of the first terminal unit 28, and the fifth outer surface 78 is arranged in a lower horizontal plane.
- the fourth outer surface 68 forms an upper end surface of the first receptacle 70.
- two further vertically aligned, one second and one third receptacles 72, 74 are formed. These two receptacles 72, 74 pass through horizontal outer surfaces 86, 88 (cf. Fig. 5c, 5d ) of the other second terminal unit 30.
- a seventh outer surface 82 is provided radially on the outside, which remains unprocessed and so far forms a possible contact surface for a holding device.
- FIG. 5a to 5d is the in Fig. 4 shown enlarged connection device 20 shown from four different perspectives.
- the Fig. 5a and 5b show, according to the Fig. 4 , the side associated with the pump side with the first outer surface 52 of the first terminal unit 28.
- the connection device 20 is rotated in such a way that the openings formed in the second connection unit 30 are not visible.
- the unprocessed outer surfaces 68, 78 and 80 visible.
- Fig. 5b shows one opposite Fig. 5a rotated about 180 ° view of the connecting device 20 so that the formed on the vertical outer surface 66 openings 70, 76 of the second terminal unit 30 are clearly visible.
- a drive shaft of the motor unit 14 (see. Fig. 1 and 3 ) to a pump unit 42 (see. Fig. 3 ), wherein the pump unit 42 into the tank unit 12 (see. Fig. 1 ) is integrated.
- the Fig. 5c and 5d show the motor unit 14 (see. Fig. 1 ) associated side of the first terminal unit 28 and thus the mounting position of the connecting device 20 in the hydraulic pump assembly 10 (see. Fig. 1 and 2 ).
- FIG. 5c and 5d For example, another unprocessed, vertically aligned eighth outer surface 84 and two machined, ninth, and tenth outer surfaces 86, 88 of the second connector assembly 30 are shown.
- the ninth outer surface 86 is penetrated by the second receptacle 72, the tenth outer surface 88 of the third receptacle 74. While in Fig. 5c only the two recordings 72, 74 are visible, shows Fig.
- the first connection unit 28 has on the pump side an eleventh outer surface 90, on which mounting holes 56c, 56b and 56e for fixing the motor unit 14 (see FIG. Fig. 1 ) and which has an edge surface 50 'for engaging a housing of the motor unit 14.
- Fig. 6 illustrates the processing steps for the production of in the Fig. 1, 2 . 4 . 5a to 5d
- a connection device 20 shown pivotable about an axis of rotation R, in Fig. 6 Not shown holding device is located on the unprocessed seventh outer surface 82 (see. Fig. 4 ) of the first terminal unit 28.
- the holding device is moved along the axis of rotation R in the four pivotal positions shown.
- the first connection unit 28 with the plate-shaped topography is arranged vertically and is machined along a working direction A on the first outer surface 52. This represents the first processing step B1.
- the fastening holes 56a, 56b, the opening 58, the tank connection T and the central recess 54 are introduced into the first connection unit 28 on the first outer surface 52.
- the likewise vertically oriented, fourth and fifth outer surface 68, 78 of the second connection unit 30 remain unprocessed.
- the said holding device may be formed from a holding or collet or by another recording, in the fixed state on the annular outer surface 82 in again detachable Way attacks. If the outer surface 82 is mentioned as an unprocessed surface, this does not exclude that outside of the described processing method, whatever kind of processing can take place, for example also in the context of a coating process.
- the machining sections B1 to B4 can also be performed in any order.
- the first connection unit 28 is aligned horizontally and the second connection unit 30 is machined on the third outer surface 66.
- the working direction A of the second processing step B2 corresponds to that of the first processing step B1.
- the holding device is moved further clockwise along the axis of rotation R, approximately at an angle of 45 °, this angle of inclination of the second outer surface 64 of the second terminal unit 30 relative to the first outer surface 52 of the first terminal unit 28 corresponds. Due to the thus selected third pivot position, the second outer surface 64 is vertically aligned and is processed in a third processing step B3 along the same working direction A. In the third processing step B3, the connection point P, R and the second connection bore part 60 of the connection bore 60, 60 'are introduced into the second connection unit 30 on the second outer surface 64.
- the first connection unit 28 is again vertically aligned and is machined on the eleventh outer surface 90 along the working direction A.
- the ninth and the tenth outer surface 86, 88 of the second terminal unit 30 processed.
- the mounting holes 56c, 56d, 56e are inserted into the first connection unit 28 on the eleventh outer surface 90, and the second receptacle 72 on the ninth outer surface 86 and the third receptacle 74 in the second connection unit 30 on the tenth outer surface 88.
- Fig. 6 illustrates that in four processing steps B1 to B4 two outer surfaces 52, 90 of the first terminal unit 28 and four outer surfaces 64, 66, 86, 88 of the second terminal unit 30 are processed. In this case, all processing steps B1 to B4 take place along the horizontally directed working direction A. In particular, no re-clamping of the base body arranged in the pivotable holding device for the connecting device 20 along the entire processing sequence is required. It is understood that the cutting machining tools used (not shown) relative to the workpiece held movable at least in three mutually perpendicular Zustellachsen and are evidently actuated by the processing or machine tool.
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Abstract
1. Anschlussvorrichtung.2. Eine Anschlussvorrichtung, bestehend aus einem Grundkörper, der mindestens zwei mit unterschiedlichen Topografien und Funktionen versehene Anschlusseinheiten (28, 30) aufweist, die einstückig miteinander verbunden sind, und der als Ur- oder Umformteil konzipiert an seinen Außenflächen (52, 64, 66, 68, 78-82) zumindest teilweise spanend bearbeitet ist, ist dadurch gekennzeichnet, dass zumindest eine Außenfläche (82) der einen Anschlusseinheit (28) unbearbeitet belassen und als mögliche Angriffsfläche für den Angriff einer mindestens um eine Achse schwenkbaren Halteeinrichtung ausgebildet ist, dass zumindest eine Außenfläche (64, 66) der anderen Anschlusseinheit (30) von der Anzahl mehr bearbeitet ist als die Anzahl der bearbeiteten Außenflächen (52) der einen Anschlusseinheit (28), und dass diese jeweils eine mehr bearbeitete Außenfläche (64, 66) senkrecht oder in einem vorgebbaren Winkel zu zumindest einem Teil der bearbeiteten Außenflächen (52) der einen Anschlusseinheit (28) verläuft, die auf gegenüberliegenden Seiten der einen Anschlusseinheit (28) liegend zumindest teilweise parallel zueinander verlaufend angeordnet sind.1. Connection device.2. A connecting device, comprising a base body, which has at least two connection units (28, 30) provided with different topographies and functions, which are integrally connected to one another, and which is designed as an original or formed part on its outer surfaces (52, 64, 66, 68 , 78-82) is at least partially machined, characterized in that at least one outer surface (82) of a connection unit (28) left unprocessed and is designed as a possible attack surface for the attack of at least one axis pivotable holding device that at least one Outer surface (64, 66) of the other terminal unit (30) is processed by the number more than the number of machined outer surfaces (52) of the one connection unit (28), and that these each have a more machined outer surface (64, 66) perpendicular or in a predeterminable angle to at least a part of the machined outer surfaces (52) of the one Anschlusseinh eit (28) extends, which are arranged on opposite sides of a connection unit (28) lying at least partially parallel to each other.
Description
Die Erfindung betrifft eine Anschlussvorrichtung, bestehend aus einem Grundkörper, der mindestens zwei mit unterschiedlichen Topografien und Funktionen versehene Anschlusseinheiten aufweist, die einstückig miteinander verbunden sind, und der als Ur- oder Umformteil konzipiert an seinen Außenflächen zumindest teilweise spanend bearbeitet ist.The invention relates to a connecting device, comprising a base body having at least two connection units provided with different topographies and functions, which are integrally connected to each other, and which is designed as a master or forming part machined on its outer surfaces at least partially machined.
Eine derartige Anschlussvorrichtung findet beispielsweise bei Hydraulikaggregaten Einsatz, welche als kompakte Baueinheiten bei verschiedenen Arten von Förder- und Hebezeugen für die Betätigung von Hubzylindern benutzt werden.
Ein weiteres Hydraulikaggregat, insbesondere für die Versorgung von Förder- und Hebezeugen mit Druckflüssigkeit, ist aus
Die Herstellung der Anschlussvorrichtung bzw. des Anschlusskörpers ist zeit- und kostenintensiv. Die spanende Bearbeitung des als Ur- oder Umformteil konzipierten Grundkörpers wird typischerweise in mehreren Bearbeitungsschritten durchgeführt, wobei der Grundkörper in mehreren Positionen durch Umspannen an einer Bearbeitungsmaschine mittels entsprechender Halteeinrichtungen oder Spannzangen gehalten und bearbeitet wird.The preparation of the connecting device or the connection body is time consuming and costly. The machining of the designed as a master or forming part basic body is typically carried out in several processing steps, wherein the main body is held and processed in several positions by re-clamping on a processing machine by means of corresponding holding devices or collets.
Die Erfindung stellt sich die Aufgabe, die Herstellung einer Anschlussvorrichtung ohne Einschränkung ihrer Funktionalität zu vereinfachen, wobei insbesondere die Anzahl und Komplexität der Fertigungsschritte reduziert werden soll.The object of the invention is to simplify the production of a connection device without restricting its functionality, in particular by reducing the number and complexity of the production steps.
Diese Aufgabe wird gelöst durch eine Anschlussvorrichtung mit den Merkmalen des Patentanspruchs 1 in seiner Gesamtheit, durch ein hydraulisches Pumpenaggregat mit den Merkmalen des Patentanspruchs 11 in seiner Gesamtheit und durch ein Verfahren mit den Merkmalen des Patentanspruchs 12 in seiner Gesamtheit. Vorteilhafte Ausgestaltungen der Erfindung sind Gegenstand der Unteransprüche.This object is achieved by a connecting device with the features of claim 1 in its entirety, by a hydraulic pump unit with the features of claim 11 in its entirety and by a method having the features of the
Erfindungsgemäß ist zumindest eine Außenfläche der einen Anschlusseinheit unbearbeitet belassen und als mögliche Angriffsfläche für den Angriff einer mindestens um eine Achse schwenkbaren Halteeinrichtung ausgebildet, wobei zumindest eine Außenfläche der anderen Anschlusseinheit von der Anzahl her mehr bearbeitet ist als die Anzahl der bearbeiteten Außenflächen der einen Anschlusseinheit, und wobei diese jeweils eine mehr bearbeitete Außenfläche senkrecht oder in einem vorgebbaren Winkel zu zumindest einem Teil der bearbeiteten Außenflächen der einen Anschlusseinheit verläuft, die auf gegenüberliegenden Seiten der einen Anschlusseinheit liegend zumindest teilweise parallel zueinander verlaufend angeordnet sind.According to the invention, at least one outer surface of the one connection unit is left unprocessed and designed as a possible engagement surface for the engagement of a holding device pivotable about at least one axis, wherein at least one outer surface of the other connection unit is processed more in number than the number of processed outer surfaces of the one connection unit, and wherein these each have a more machined outer surface perpendicular or at a predeterminable angle to at least a portion of the machined outer surfaces of the one connection unit, which are arranged on opposite sides of a connection unit at least partially parallel to each other.
Die erfindungsgemäße Ausgestaltung der Anschlussvorrichtung erlaubt, den Grundkörper in nur einer Aufspannung einer Maschinenanordnung, beispielsweise bei einer spanenden Werkzeugmaschine, vollständig zu bearbeiten, wobei die Halteeinrichtung als Werkstückhalter an der zumindest einen nicht zu bearbeitenden Angriffsfläche am Grundkörper definiert anliegt. Vorteilhafterweise ist der Grundkörper ein geschmiedeter oder gegossener Rohling als Umformteil bzw. Urformteil. Die Geometrie der mindestens zwei, den Grundkörper bildenden Anschlusseinheiten ist derart gewählt, dass in der einen Aufspannung des Grundkörpers sämtliche zu bearbeitende Außenflächen frei von nur einer Bearbeitungsseite der Maschine her zugänglich sind und sämtliche Verbindungsbohrungen und Aufnahmen für Anschlussleitungen und Steuerventile durch zugehörige, vorzugsweise spanende, Bearbeitungsschritte in den Grundkörper eingebracht werden können. Der Grundkörper lässt sich im Rahmen eines Umformprozesses auch aus einem Strangpressprofil erhalten.The embodiment of the connection device according to the invention allows the basic body to be completely machined in only one clamping of a machine arrangement, for example in a cutting machine tool, wherein the holding device as workpiece holder rests defined on the at least one non-machinable contact surface on the base body. Advantageously, the main body is a forged or cast blank as a forming or Urformteil. The geometry of the at least two terminal units forming the base body is selected such that in one clamping of the base body all exterior surfaces to be machined are accessible from only one processing side of the machine and all connection bores and receptacles for connecting lines and control valves are associated with, preferably machined, Processing steps can be introduced into the body. The main body can be obtained in the context of a forming process also from an extruded profile.
Topografie im Sinne der Erfindung meint die dreidimensionale Formgestaltung respektive die Geometrie der jeweiligen Anschlusseinheit. Diese ist mit ihren Teilflächen nach den vorliegenden Anschlussmöglichkeiten beliebig konzipierbar, wobei die Teilflächen jedoch Bestandteil einer Gesamtgeometrie sind, deren fiktive Außenkontur beispielsweise einen Quader oder eine Platte ausbildet, die insoweit mit quaderförmiger bzw. plattenförmiger Topografie bezeichnet sind. Die jeweilige Anschlusseinheit ist in Abhängigkeit der Ausgestaltung eines zugehörigen hydraulischen Pumpenaggregats sowie des An- und Einbaus der zugehörigen Komponenten, wie einer Tankeinheit, einer Motoreinheit und einer Pumpeneinheit sowie zugehöriger Steuerventile, bedarfsoptimiert gewählt. Zweckmäßigerweise sind der Anschluss und der Anbau einer Motoreinheit, einer Pumpeneinheit und/oder einer Tankeinheit der einen Anschlusseinheit und der Anschluss und der Anbau von Steuerventilen und Steuerleitungen der anderen Anschlusseinheit räumlich zugeordnet. Die beiden Anschlusseinheiten und die an ihnen jeweils vorgesehenen Außenflächen sind anforderungsindividuell gewählt und ausgestaltet. Die zumindest teilweise parallel zueinander verlaufende, typischerweise zwei bearbeitete Außenflächen aufweisende eine Anschlusseinheit dient vorzugsweise der Ausbildung eines Trägerteils. Vorzugsweise dient die mehr bearbeitete Außenflächen aufweisende andere Anschlusseinheit der Ausbildung einer Steuereinheit.Topography in the sense of the invention means the three-dimensional shape design or the geometry of the respective connection unit. This is with their faces according to the present connection options arbitrarily conceivable, but the faces are part of an overall geometry whose fictitious outer contour forms, for example, a cuboid or a plate, which are known in this respect with cuboid or plate-shaped topography. The respective connection unit is selected depending on the configuration of an associated hydraulic pump unit as well as the attachment and installation of the associated components, such as a tank unit, a motor unit and a pump unit and associated control valves, demand-optimized. Conveniently, the connection and attachment of a motor unit, a pump unit and / or a tank unit of a connection unit and the connection and attachment of control valves and control lines of the other terminal unit spatially associated. The two connection units and the respective outer surfaces provided on them are selected and configured to suit individual requirements. The at least partially mutually parallel, typically two machined outer surfaces having a connection unit preferably serves to form a support member. Preferably, the more machined outer surfaces having other terminal unit serves to form a control unit.
Bei einer bevorzugten Ausführungsform der erfindungsgemäßen Anschlussvorrichtung ist die Topografie der einen Anschlusseinheit plattenförmig und die der anderen Anschlusseinheit quaderförmig, wobei die quaderförmige Topografie an einer Stelle der unbearbeitet gelassenen Außenfläche der einen Anschlusseinheit, die für einen möglichen Angriff der Halteeinrichtung freigelassen ist, in die andere Anschlusseinheit derart einstückig übergeht, dass die quaderförmige Topografie an zumindest einer Seite über die plattenförmige Topografie mit einem vorgebbaren Überstand vorsteht. Hieraus ergibt sich der Vorteil eines besonders kompakten und stabilen, für die Ausbildung eines Hydraulikaggregats geeigneter Aufbau der Anschlussvorrichtung.In a preferred embodiment of the connection device according to the invention, the topography of one connection unit is plate-shaped and that of the other connection unit is cuboid, wherein the cuboid topography at one point of the unworked left outer surface of a connection unit, which is released for a possible attack of the holding device, in the other connection unit so integrally passes that the cuboid topography protrudes on at least one side of the plate-shaped topography with a predetermined projection. This results in the advantage of a particularly compact and stable, for the Training a hydraulic unit suitable structure of the connection device.
Die eine plattenförmige Topografie aufweisende Anschlusseinheit wird in der Regel als Trägerteil verwendet, wobei auf der einen Seite, typischerweise bei normaler Einbaulage oben, die Motoreinheit und auf einer anderen Seite, typischerweise unten, die Tankeinheit und die Pumpeneinheit angeordnet sind. Bei dieser bevorzugten Ausführungsform der Erfindung ist die unbearbeitete Außenfläche der einen Anschlusseinheit durch eine außenliegende, der Außenumfangskontur der plattenförmigen Topografie folgende Fläche gegeben. Die plattenförmige Topografie kann einen rechteckigen, vorzugsweise quadratischen, einen ellipsen- oder kreisförmigen Querschnitt aufweisen, es sind jedoch weitere beliebige Querschnittsformen denkbar. Vorzugsweise ist jedoch für die dahingehend eine Anschlusseinheit ein im Wesentlichen kreisförmiger Querschnitt eines Zylinders als plattenförmige Topografie vorgegeben.The terminal unit having a plate-like topography is generally used as a carrier part, wherein on one side, typically in the normal installation position above, the motor unit and on another side, typically below, the tank unit and the pump unit are arranged. In this preferred embodiment of the invention, the unprocessed outer surface of the one connection unit is given by an outer surface following the outer peripheral contour of the plate-shaped topography. The plate-shaped topography may have a rectangular, preferably square, elliptical or circular cross-section, however, any further cross-sectional shapes are conceivable. Preferably, however, a substantially circular cross-section of a cylinder is given as the plate-shaped topography for the connection unit.
Die sich an die unbearbeitete Außenfläche der einen Anschlusseinheit mit ihrer quaderförmigen Topografie anschließende andere Anschlusseinheit steht im zusammengebauten Zustand des Hydraulikaggregats über den Verbund aus Tankeinheit, Anschlussvorrichtung und Motoreinheit an deren Seite über. Auf diese Weise sind die in der anderen Anschlusseinheit angeordneten Steuerventile und Steueranschlüsse in einfacher Weise von außen zugänglich und an zentraler Stelle platzsparend zusammengefasst angeordnet.In the assembled state of the hydraulic unit, the other connection unit adjoining the untreated outer surface of the connection unit with its parallelepiped topography projects beyond the composite of the tank unit, connection device and motor unit on its side. In this way, arranged in the other connection unit control valves and control terminals are easily accessible from the outside and arranged to save space in a central location.
Bei einer weiteren bevorzugten Ausführungsform der erfindungsgemäßen Anschlussvorrichtung dient die Anschlusseinheit mit der plattenförmigen Topografie mit ihren gegenüberliegend angeordneten Außenflächen als Funktionsteil zum einen der Aufnahme einer Motoreinheit bzw. zum anderen der Aufnahme einer Pumpeneinheit, die vorzugsweise in eine Tankeinheit integriert ist, wobei die andere Anschlusseinheit mit der quaderförmigen Topografie als Funktionsteil der zumindest teilweisen Aufnahme von Steuerventilen dient. Die stirnseitig gegenüberliegenden Außenflächen der einen Anschlusseinheit mit der plattenförmigen Topografie sind besonders bevorzugt im Wesentlichen plan ausgebildet. Dies erleichtert die Anlage und Befestigung der Motoreinheit sowie der Pumpeneinheit am Grundkörper. Zweckmäßigerweise sind an der jeweiligen Außenfläche benachbart zu den planen Flächenabschnitten eine Strukturierung, wie besonders geformte Vertiefungen oder Aufnahmen, bildende Flächenabschnitte innerhalb der jeweiligen Topografie und als Bestandteil derselben vorgesehen.In a further preferred embodiment of the connection device according to the invention, the connection unit with the plate-shaped topography with its oppositely arranged outer surfaces serves as a functional part for receiving a motor unit or for receiving a pump unit, which is preferably in a tank unit is integrated, wherein the other terminal unit with the cuboid topography serves as a functional part of the at least partially receiving control valves. The frontally opposite outer surfaces of a connection unit with the plate-shaped topography are particularly preferably formed substantially flat. This facilitates the installation and attachment of the motor unit and the pump unit on the body. Expediently, structuring, such as specially shaped depressions or receptacles, forming surface sections within the respective topography and as a component thereof are provided on the respective outer surface adjacent to the planar surface sections.
Besonders bevorzugt bildet die eine Anschlusseinheit mit ihrer plattenförmigen Topografie einen zumindest teilweise zylindrischen Teil des Grundkörpers aus, wobei konzentrisch zu dieser zylindrischen Außenkontur und die eine Anschlusseinheit durchgreifend eine Mittenausnehmung vorgesehen ist, die von einer Antriebswelle der Motoreinheit, vorzugsweise in Form eines Elektromotors, für den Antrieb der Pumpeneinheit als Druckversorgungseinrichtung durchgreifbar ausgestaltet ist. Eine derart ausgestaltete Anschlussvorrichtung lässt sich in besonders einfacher Weise an einem im Wesentlichen als Ganzes zylinderförmig ausgebildeten Hydraulikaggregat anordnen, wobei vorzugsweise die Motoreinheit, die eine Anschlusseinheit mit der plattenförmigen Topografie und die Tankeinheit in etwa den gleichen Außendurchmesser aufweisen. Aufgrund der in der zugeordneten Anschlusseinheit ausgebildeten Mittenausnehmung lässt sich der Wellenantrieb der Motoreinheit für die Hydropumpe sicher und zentral in der Anschlussvorrichtung führen und reicht durch das Tankgehäuse, vor etwaigen Beschädigungen geschützt, in das Tankinnere hinein. Hieraus ergibt sich der weitere Vorteil einer besonders einfachen und sicheren Ausgestaltung eines mit der erfindungsgemäßen Anschlussvorrichtung ausgestatteten hydraulischen Pumpenaggregats.Particularly preferably, the one terminal unit with its plate-like topography forms an at least partially cylindrical part of the basic body, wherein a center recess is provided concentrically concentrically with this cylindrical outer contour and the one connecting unit, which is provided by a drive shaft of the motor unit, preferably in the form of an electric motor Drive the pump unit is configured as a pressure supply means durchgreifbar. A connection device configured in this way can be arranged in a particularly simple manner on a hydraulic unit which is substantially cylindrical as a whole, wherein preferably the motor unit which has a connection unit with the plate-shaped topography and the tank unit has approximately the same outside diameter. Due to the central recess formed in the associated connection unit, the shaft drive of the motor unit for the hydraulic pump can be guided safely and centrally in the connection device and extends through the tank housing, protected against possible damage, into the interior of the tank. This results in the further advantage of a particularly simple and secure embodiment of a hydraulic pump unit equipped with the connecting device according to the invention.
Die erfindungsgemäß ausgestaltete Anschlussvorrichtung zeichnet sich insbesondere dadurch aus, dass sämtliche Bearbeitungsschritte zur Bearbeitung des Grundkörpers in nur einer Arbeitsrichtung mit dem spanenden Bearbeitungswerkzeug durchführbar sind. Hierbei werden die unterschiedlichen Bearbeitungspositionen "von vorne, von hinten und seitlich" jeweils durch eine Schwenkbewegung der um mindestens eine Achse schwenkbaren Halteeinrichtung, welche den Grundkörper an der unbearbeitet belassenen Angriffsfläche während der gesamten Bearbeitung greift und hält, eingenommen. Durch die eine Aufspannung werden Fluchtungsfehler ausgeschlossen und Fehler, wie sie ansonsten beim Umspannen auftreten können, vermieden. Die räumliche Anordnung und Ausgestaltung der einzelnen Außenflächen sowie die Topografien der einzelnen Anschlusseinheiten sind derart gewählt, dass sämtliche Anschluss- und Steuerleitungen sowie Einbauräume für zugehörige Steuerventile durch entsprechende Bohrungen in spanender Bearbeitung in den Grundkörper eingebracht werden können. Die zugehörigen fluidführenden Verzweigungen und Kreuzungsstellen ergeben sich durch das Einbringen von verschiedenen Teilbohrungen aus unterschiedlichen Richtungen in die jeweilige Anschlusseinheit des Grundkörpers. Durch die zugehörige Schwenkbewegung der Halteeinrichtung als Werkstückhalter für den Grundkörper in die entsprechenden Bearbeitungspositionen werden die zu bearbeitenden Außenflächen bevorzugt senkrecht zu der einen Bearbeitungsrichtung positioniert. Die Bearbeitungsrichtung ist dabei vorzugsweise über die Zustellachse eines rotierend angetriebenen Werkzeuges, wie einem Bohrer, Fräser, etc., vorgegeben.The connecting device designed according to the invention is characterized in particular by the fact that all processing steps for machining the base body can be carried out in only one working direction with the cutting machining tool. Here, the different processing positions "from the front, from the back and the side" each by a pivoting movement of the pivotable about at least one axis holding device which engages and holds the main body of the unprocessed left attack surface during the entire processing, taken. Due to the one clamping alignment errors are excluded and errors, as they can otherwise occur during re-tightening avoided. The spatial arrangement and design of the individual outer surfaces and the topographies of the individual connection units are chosen such that all connection and control lines and installation spaces for associated control valves can be introduced through corresponding holes in machining in the body. The associated fluid-carrying branches and intersections result from the introduction of different partial holes from different directions in the respective terminal unit of the body. By the associated pivoting movement of the holding device as a workpiece holder for the main body in the corresponding processing positions to be machined outer surfaces are preferably positioned perpendicular to the one processing direction. The machining direction is preferably via the feed axis of a rotationally driven tool, such as a drill, milling cutter, etc., specified.
Bei einer weiteren bevorzugten Ausführungsform der erfindungsgemäßen Anschlussvorrichtung verlaufen zwischen der plattenförmigen und der quaderförmigen Topografie und an der Stelle des Übergangs zwischen den beiden Topografien in dem Grundkörper Verbindungsbohrungen, die mit ihren freien Enden an den Außenflächen der jeweiligen Anschlusseinheit ausmünden. Die Verbindungsbohrungen weisen jeweils ein in der einen Anschlusseinheit verlaufendes Verbindungsbohrungsteil und ein weiteres in der anderen Anschlusseinheit verlaufendes Verbindungsbohrungsteil auf. Zum Einbringen der jeweiligen Verbindungsbohrung sind zumindest zwei Bearbeitungsschritte, eine Bohrung in der einen Anschlusseinheit und eine weitere Bohrung in der anderen Anschlusseinheit, erforderlich, wobei die beiden in den Grundkörper eingebrachten Bohrungen und entsprechend die zugehörigen Schwenkpositionen der Halteeinrichtung zur Einbringung der Bohrungen in den Grundkörper in einem vorgegebenen, beispielsweise senkrechten, Winkel zueinander stehen.In a further preferred embodiment of the connecting device according to the invention run between the plate-shaped and the cuboid topography and at the point of transition between the two topographies in the base connecting bores, which open with their free ends on the outer surfaces of the respective terminal unit. The connection bores each have one in the one connection unit extending connecting bore part and another extending in the other connection unit connecting bore part. For introducing the respective connection bore, at least two processing steps, one bore in the one connection unit and a further bore in the other connection unit, are required, wherein the two bores introduced into the base body and correspondingly the associated pivot positions of the holding device for introducing the bores into the base body a predetermined, for example, vertical, angle to each other.
Bei einer weiteren bevorzugten Ausführungsform der erfindungsgemäßen Anschlussvorrichtung dient eine Verbindungsbohrung der Druckversorgung eines Verbrauchers mit Fluid unter Pumpendruck und eine weitere, von der einen Verbindungsbohrung zumindest teilweise separierte und von dieser abzweigende Bohrung dient dem Rücklauf von Fluid von dem Verbraucher zum Tank. Die Verbindungsbohrung verläuft von einer Außenfläche an der einen Anschlusseinheit über die Stelle des Übergangs zwischen den beiden Topografien zu einer Außenfläche der anderen Anschlusseinheit. Zweckmäßigerweise wird das der Anschlussstelle für Druckversorgung und Rücklauf zugeordnete Bohrungsteil von einer in einem Winkel von vorzugsweise 45° zur bearbeiteten Außenfläche der einen Anschlusseinheit verlaufenden Außenfläche der anderen Anschlusseinheit aus in den Grundkörper eingebracht. Es versteht sich, dass die Bohrungen gleiche oder unterschiedliche Bohrungsdurchmesser aufweisen können. Besonders bevorzugt weisen die Bohrungen bzw. Bohrungsteile in den der jeweiligen Außenfläche zugeordneten Endabschnitten ein gestuftes Profil auf.In a further preferred embodiment of the connecting device according to the invention, a connecting bore of the pressure supply of a consumer with fluid under pump pressure and another, at least partially separated from the one connecting hole and branches off from this bore is the return of fluid from the consumer to the tank. The connection bore extends from an outer surface at the one connection unit via the location of the transition between the two topographies to an outer surface of the other connection unit. Expediently, the bore part assigned to the connection point for pressure supply and return is introduced into the base body from an outer surface of the other connection unit extending at an angle of preferably 45 ° to the machined outer surface of the one connection unit. It is understood that the holes may have the same or different bore diameter. Particularly preferably, the bores or bore parts have a stepped profile in the end regions assigned to the respective outer surface.
Vorteilhafterweise ist an einer Stelle zwischen den Verbindungsbohrungen von Druckversorgung und Rücklauf eine Aufnahme für ein Druckbegrenzungsventil vorgesehen, die eine Außenfläche der anderen Anschlusseinheit durchgreift, die im vorliegenden Fall senkrecht zu zumindest einer bearbeiteten Außenfläche der einen Anschlusseinheit verläuft. Weiter ist vorteilhaft, dass in die andere Anschlusseinheit in die Verbindungsbohrung, die der Druckversorgung dient, eine Aufnahme für ein Rückschlagventil ausmündet, die eine Außenfläche der anderen Anschlusseinheit durchgreift, die parallel zu zumindest einer bearbeiteten Außenfläche der einen Anschlusseinheit verläuft. Bei einer weiteren bevorzugten Ausführungsform der Erfindung ist an einer anderen Stelle zwischen den Verbindungsbohrungen von Druckversorgung und Rücklauf für eine weitere Ventilgruppe, die vorzugsweise ein elektromagnetisch betätigbares Proportionalventil oder ein sonstiges Hydraulikventil aufweist, eine Aufnahme vorgesehen, die die Außenfläche der anderen Anschlusseinheit durchgreift, die parallel zu zumindest einer bearbeiteten Außenfläche der einen Anschlusseinheit verläuft.Advantageously, a receptacle for a pressure limiting valve is provided at a location between the connecting holes of pressure supply and return, which passes through an outer surface of the other terminal unit, which in the present case perpendicular to at least one machined Outer surface of a connection unit runs. It is further advantageous that in the other connection unit in the connection bore, which serves the pressure supply, a receptacle for a check valve opens, which passes through an outer surface of the other terminal unit, which extends parallel to at least one machined outer surface of a connection unit. In a further preferred embodiment of the invention is at another point between the communication holes of the pressure supply and return for a further valve group, which preferably has an electromagnetically actuated proportional valve or other hydraulic valve, a receptacle provided which engages through the outer surface of the other terminal unit which parallel extends to at least one machined outer surface of a connection unit.
Die Anzahl und Anordnung der Außenflächen der anderen Anschlusseinheit, welche mit ihrer quaderförmigen Topografie den Steuerblock für das Hydraulikaggregat bilden, ist derart gewählt, dass die Ventileinbauräume, gebildet durch Aufnahmen, und die Steuerleitungen, gebildet durch Verbindungsbohrungen, samt zugehöriger Kreuzungsstellen in einer Arbeitsrichtung und in einer Aufspannung eines zugehörigen Spanwerkzeugs in den Grundkörper eingebracht werden können. Hierbei übernimmt die den Grundkörper haltende Halteeinrichtung mindestens drei, vorzugsweise vier, Schwenkpositionen ein, wobei die zu bearbeitenden Außenflächen senkrecht zur Arbeitsrichtung ausgerichtet und durch das Spanwerkzeug bearbeitet werden.The number and arrangement of the outer surfaces of the other terminal unit, which form the control block for the hydraulic unit with its cuboid topography, is selected such that the valve mounting spaces, formed by receptacles, and the control lines, formed by connecting holes, together with associated intersections in one direction and in a clamping of an associated chip tool can be introduced into the body. In this case, the holding device holding the base body assumes at least three, preferably four, pivoting positions, wherein the outer surfaces to be machined are aligned perpendicular to the working direction and machined by the cutting tool.
Eine besondere Ausgestaltung des durch die Anschlussvorrichtung gebildeten Steuerblocks ist dadurch erreicht, dass Druckversorgung und Rücklauf sich gemeinsam eine Anschlussstelle teilen, die an einer Außenfläche der anderen Anschlusseinheit austritt, die in einem vorgebbaren Winkel, vorzugsweise von 45°, zu zumindest einer bearbeiteten Außenfläche der einen Anschlusseinheit verläuft. Hierbei ist zu beachten, dass ein Teil der Bohrung zur Ausbildung des Verbindungsbohrungsteils für den Rücklauf im Betrieb des zugehörigen hydraulischen Aggregats verschlossen, da ohne Funktion, ist. Während die eine Anschlusseinheit, die die Motoreinheit, die Pumpeneinheit und die Tankeinheit aufnimmt, lediglich diese Aufnahme- bzw. Trägerfunktion inne hat, sind sämtliche Komponenten und zugehörige Einbauräume für die hydraulische Steuerung in der typischerweise seitlich angeordneten anderen Anschlusseinheit ausgebildet. Durch die einstückige Ausbildung des Grundkörpers mit der einen Anschlusseinheit und der zumindest einen anderen Anschlusseinheit kann die Anordnung eines separaten Steuerblocks am Aufnahme- bzw. Trägerteil entfallen.A special embodiment of the control block formed by the connection device is achieved in that pressure supply and return together share a connection point which emerges on an outer surface of the other connection unit, which at a predetermined angle, preferably of 45 °, to at least one machined outer surface of the one Connection unit runs. It should be noted that a part of the bore for the formation of the connecting bore part for the return during operation of the associated hydraulic unit closed, as is without function. While the one connection unit which accommodates the motor unit, the pump unit and the tank unit only has this receiving or carrier function, all components and associated installation spaces for the hydraulic control are formed in the typically laterally arranged other connection unit. Due to the one-piece design of the base body with the one connection unit and the at least one other connection unit, the arrangement of a separate control block on the receiving or carrier part can be omitted.
Die Erfindung betrifft weiter ein hydraulisches Pumpenaggregat mit einer erfindungsgemäßen Anschlussvorrichtung, wobei eine elektrische Motoreinheit auf der einen Seite und eine Pumpeneinheit, die vorzugsweise in eine Tankeinheit integriert ist, auf der anderen Seite der einen Anschlusseinheit angebracht sind, und wobei mindestens ein Steuerventil zum Betrieb des Aggregats in die Aufnahmen der anderen Anschlusseinheit aufgenommen ist.The invention further relates to a hydraulic pump unit with a connection device according to the invention, wherein an electric motor unit on one side and a pump unit, which is preferably integrated in a tank unit, are mounted on the other side of the one connection unit, and wherein at least one control valve for operating the Aggregate is included in the recordings of the other connection unit.
Die Erfindung betrifft weiter ein Verfahren zur Herstellung einer erfindungsgemäßen Anschlussvorrichtung, wobei mittels einer um mindestens eine Achse schwenkbaren Halteeinrichtung die eine unbearbeitete Außenfläche der einen Anschlusseinheit gegriffen wird, um durch einen Schwenkvorgang von beispielsweise 180° über verschiedene, eine spanende Bearbeitung aus nur einer Arbeitsrichtung heraus in mindestens drei, vorzugsweise vier, Schwenkpositionen zu ermöglichen, und dabei die Außenflächen von beiden Anschlusseinheiten für die spätere Aufnahme einer Motor-Pumpeneinheit nebst mindestens eines Steuerventils zu bearbeiten. Schwenkvorgänge um größere Winkel als 180° sind möglich.The invention further relates to a method for producing a connection device according to the invention, wherein by means of a pivotable about at least one axis holding device which an unprocessed outer surface of a connection unit is gripped to by a pivoting operation, for example, 180 ° on various, a machining from only one working direction out in at least three, preferably four, to enable pivotal positions, and thereby to edit the outer surfaces of two terminal units for the later recording of a motor-pump unit together with at least one control valve. Pivoting operations around larger angles than 180 ° are possible.
Das erfindungsgemäße Verfahren ermöglicht eine Bearbeitung des Grundkörpers für die Anschlussvorrichtung in einer Aufspannung des Grundkörpers, wobei die einzelnen Positionen zur Bearbeitung von Außenflächen durch eine zugehörige Schwenkbewegung der Halteeinrichtung mit dem darin angeordneten Grundkörper eingenommen werden. Durch die Bearbeitung aus lediglich einer Arbeitsrichtung ergibt sich eine Reduzierung der Komplexität und eine weitere Ersparnis von Zeit- und Kostenaufwand. Der Grundkörper für die erfindungsgemäße Anschlussvorrichtung ist besonders bevorzugt derart ausgestaltet, dass nach der mechanischen Zerspanung im Rahmen des erfindungsgemäßen Verfahrens lediglich die Steuerventile eingesetzt werden müssen, um eine betriebsfertige Anschlussvorrichtung für ein hydraulisches Pumpenaggregat zu erhalten. Typische Anwendungsgebiete solcher Hydraulikaggregate sind Werkzeugmaschinen oder Hub-Senk-Anwendungen, beispielsweise Flurförderzeuge oder Hubsteiger.The inventive method allows processing of the base body for the connecting device in a clamping of the body, wherein the individual positions for processing of outer surfaces are taken by an associated pivoting movement of the holding device with the base body arranged therein. Processing from only one working direction results in a reduction of complexity and a further saving of time and expense. The main body for the connecting device according to the invention is particularly preferably designed such that after the mechanical machining in the context of the inventive method, only the control valves must be used to obtain a ready-connection device for a hydraulic pump unit. Typical areas of application of such hydraulic power units are machine tools or lifting / lowering applications, such as industrial trucks or lifting platforms.
Weitere Vorteile und Merkmale der Erfindung ergeben sich aus den Figuren und der nachfolgenden Beschreibung der Zeichnung. Die vorstehend genannten und die weiter angeführten Merkmale können jeweils einzeln oder in beliebigen Kombinationen an einer erfindungsgemäßen Anschlussvorrichtung, einem erfindungsgemäßen hydraulischen Pumpenaggregat oder einem erfindungsgemäßen Verfahren realisiert sein. Die in den Figuren gezeigten Merkmale sind rein schematisch und nicht maßstäblich zu verstehen.Further advantages and features of the invention will become apparent from the figures and the following description of the drawing. The above-mentioned and the further cited features can be implemented individually or in any desired combinations on a connecting device according to the invention, a hydraulic pump unit according to the invention or a method according to the invention. The features shown in the figures are purely schematic and not to scale.
Es zeigen:
- Fig. 1
- ein Ausführungsbeispiel eines erfindungsgemäßen hydrauli-schen Pumpenaggregats in Seitenansicht;
- Fig. 2
- das hydraulische Pumpenaggregat nach der
Fig. 1 in einer Draufsicht von oben; - Fig. 3
- einen hydraulischen Schaltplan für das Pumpenaggregat nach den
Fig. 1 und 2 ; - Fig. 4
- die im hydraulischen Pumpenaggregat nach den
Fig. 1 und 2 verwendete Anschlussvorrichtung in vergrößerter, perspektivischer Ansicht; - Fig. 5a bis 5d
- die Anschlussvorrichtung nach der
Fig. 4 aus unterschiedlichen Blickrichtungen; und - Fig. 6
- einen Grundkörper für die Aufnahme der erfindungsgemäßen Anschlussvorrichtung nach den
Fig. 4 bis 5d in vier voneinander verschiedenen Schwenkpositionen zur Veranschaulichung der einzelnen Bearbeitungsschritte.
- Fig. 1
- an embodiment of a hydraulic pump assembly according to the invention in side view;
- Fig. 2
- the hydraulic pump unit after the
Fig. 1 in a plan view from above; - Fig. 3
- a hydraulic circuit diagram for the pump set after the
Fig. 1 and 2 ; - Fig. 4
- in the hydraulic pump unit after the
Fig. 1 and 2 used connection device in an enlarged, perspective view; - Fig. 5a to 5d
- the connecting device after the
Fig. 4 from different perspectives; and - Fig. 6
- a main body for receiving the connecting device according to the invention according to the
Fig. 4 to 5d in four different pivot positions to illustrate the individual processing steps.
Die erste Anschlusseinheit 28 der Anschlussvorrichtung 20 ist, wie bereits dargelegt, zwischen der Tankeinheit 12 mit der Pumpeneinheit 42 und der Motoreinheit 14 angeordnet und bildet insoweit ein Trägerteil für alle drei Einheiten 12, 14, 42 aus. Eine zweite Anschlusseinheit 30 ist seitlich am Verbund von Tankeinheit 12, erster Anschlusseinheit 28 und Motoreinheit 14 angeordnet und an einer radialen Außenfläche der ersten Anschlusseinheit 28 einstückig unter Bildung des Grundkörpers der Anschlussvorrichtung 20 mit dieser verbunden. In der
Die
Die
Die Messeinrichtung 40 misst den am Verbraucheranschluss P anstehenden Fluiddruck und gibt seine ermittelnden Messwerte an eine nicht dargestellte Steuer- und Rechnereinheit weiter, die das elektromagnetisch betätigbare Proportional-Ventil 36 ansteuert. In der gezeigten einen Ventil- oder Neutralstellung sperrt das Wegeventil 36 unter dem Einfluss seiner Ventilfeder den Fluidweg zwischen dem Rückschlagventil 34 und dem Verbraucheranschluss P zur Tankseite mit der Tankeinheit 12 ab. In der weiteren Ventilstellung öffnet hingegen das Wegeventil 36 und gibt den Rücklauf vom Verbraucheranschluss P zur Tankeinheit 12 frei.The measuring
Im dahingehenden Rücklauf sind weiter zwischen dem Wegeventil 36 und der Tankeinheit 12 ein Stromregelventil 38, 48 angeordnet. In einer weiteren Fluidverbindung zwischen der Druckversorgung und der Pumpeneinheit 42 und dem Rücklauf ist das Druckbegrenzungsventil 32 angeordnet, über welches im Falle einer zu großen, unzulässigen Druckerhöhung Fluid zurück in die Tankeinheit 12 geführt wird. Zur Belüftung der Tankeinheit 12 ist an den Befüllstutzen 24 ein weiteres Filterelement 44' mit angeschlossener Drossel als Belüftungsfilter (in den
Die Öffnung 58 und der Tankanschluss T bilden jeweils ein Ende einer Verbindungsbohrung 60, 60' bzw. einer weiteren Bohrung 62, 62'. Die Bohrungen 60, 60' und 62, 62' verlaufen jeweils in beiden Anschlusseinheiten 28, 30 der Anschlussvorrichtung 20. Hierbei ist ein erstes Bohrungsteil 60', 62' in der ersten Anschlusseinheit 28 und ein zweites Bohrungsteil 60, 62 in der zweiten Anschlusseinheit 30 verlaufend ausgebildet und dort jeweils durch spanende Bearbeitung eingebracht. Die Verbindungsbohrung 60, 60' dient der Druckversorgung von der Tankeinheit 12 (vgl.
An der anderen zweiten Anschlusseinheit 30 sind eine zweite Außenfläche 64, eine dritte Außenfläche 66 und eine vierte Außenfläche 68, eine fünfte Außenfläche 78 und eine sechste Außenfläche 80 ausgebildet. Die zweite Außenfläche 64 ist mit einem etwa 45° betragenden Winkel schräg zur Vertikalen angeordnet und weist die dem Verbraucheranschluss P und dem Rücklauf R zugeordnete Anschlussstelle als Ende der Verbindungsbohrung 60, 60' auf. Eine weitere Öffnung 76 zur Ausbildung des zweiten Bohrungsteils 62 der weiteren Bohrung 62, 62' ist an der dritten Außenfläche 66 vorgesehen, welche zudem von einer horizontal angeordneten ersten Aufnahme 70 für ein Steuerventil durchgriffen ist. Die bearbeitete dritte Außenfläche 66 und die unbearbeitete sechste Außenfläche 80 sind jeweils vertikal angeordnet.At the other second
An der in
Die in der Beschreibung der
In den
Die
In einer zweiten Schwenkposition der Halteeinrichtung ist die erste Anschlusseinheit 28 horizontal ausgerichtet und die zweite Anschlusseinheit 30 wird an der dritten Außenfläche 66 bearbeitet. Im zweiten Bearbeitungsschritt B2 werden an der dritten Außenfläche 66 die erste Aufnahme 70 und die weitere Öffnung 76 und das zweite Bohrungsteil 62 der weiteren Bohrung 62, 62' in die zweite Anschlusseinheit 30 eingebracht. Die Arbeitsrichtung A des zweiten Bearbeitungsschrittes B2 entspricht der des ersten Bearbeitungsschrittes B1.In a second pivot position of the holding device, the
Ausgehend von der zweiten Schwenkposition wird die Halteeinrichtung weiter im Uhrzeigersinn entlang der Rotationsachse R bewegt, in etwa um einen Winkel von 45°, wobei dieser Winkel der Schrägstellung der zweiten Außenfläche 64 der zweiten Anschlusseinheit 30 gegenüber der ersten Außenfläche 52 der ersten Anschlusseinheit 28 entspricht. Aufgrund der derart gewählten dritten Schwenkposition ist die zweite Außenfläche 64 vertikal ausgerichtet und wird in einem dritten Bearbeitungsschritt B3 entlang der gleichen Arbeitsrichtung A bearbeitet. Im dritten Bearbeitungsschritt B3 wird an der zweiten Außenfläche 64 die Anschlussstelle P, R und das zweite Verbindungsbohrungsteil 60 der Verbindungsbohrung 60, 60' in die zweite Anschlusseinheit 30 eingebracht.Starting from the second pivoting position, the holding device is moved further clockwise along the axis of rotation R, approximately at an angle of 45 °, this angle of inclination of the second
In der vierten und letzten Schwenkposition der Halteeinrichtung ist die erste Anschlusseinheit 28 erneut vertikal ausgerichtet und wird an der elften Außenfläche 90 entlang der Arbeitsrichtung A bearbeitet. Weiter werden im vierten Bearbeitungsschritt B4 die neunte und die zehnte Außenfläche 86, 88 der zweiten Anschlusseinheit 30 bearbeitet. Im vierten Bearbeitungsschritt B4 werden an der elften Außenfläche 90 die Befestigungslöcher 56c, 56d, 56e in die erste Anschlusseinheit 28 sowie an der neunten Außenfläche 86 die zweite Aufnahme 72 und an der zehnten Außenfläche 88 die dritte Aufnahme 74 in die zweite Anschlusseinheit 30 eingebracht.In the fourth and last pivot position of the holding device, the
Claims (12)
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
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DE102018001725.8A DE102018001725A1 (en) | 2018-03-05 | 2018-03-05 | connection device |
Publications (2)
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EP3536952A1 true EP3536952A1 (en) | 2019-09-11 |
EP3536952B1 EP3536952B1 (en) | 2022-10-12 |
Family
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Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
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EP19157616.4A Active EP3536952B1 (en) | 2018-03-05 | 2019-02-18 | Connection device of hydraulic pump unit |
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EP (1) | EP3536952B1 (en) |
DE (1) | DE102018001725A1 (en) |
Citations (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE19959022C1 (en) * | 1999-12-08 | 2001-06-21 | Bosch Gmbh Robert | Drive unit for hydraulic pressure source e.g. for automobile servo steering system, has electric motor enclosed by separate motor hood anchored to flange plate of pressure source |
EP1666726A2 (en) * | 2004-12-04 | 2006-06-07 | Hydac Fluidtechnik GmbH | Modular system for fluid pumps |
DE202005005620U1 (en) * | 2005-04-08 | 2006-08-17 | Hawe Hydraulik Gmbh & Co. Kg | pump unit |
EP2241753A1 (en) * | 2009-04-15 | 2010-10-20 | HAWE Hydraulik SE | Motor pump unit |
DE102016010669A1 (en) * | 2016-08-29 | 2018-03-01 | Hydac Fluidtechnik Gmbh | Motor-pump device |
Family Cites Families (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE102008030715A1 (en) * | 2008-06-27 | 2009-12-31 | Hydac Fluidtechnik Gmbh | hydraulic power unit |
DE102015008837A1 (en) | 2015-07-08 | 2017-01-12 | Hydac Fluidtechnik Gmbh | hydraulic power unit |
-
2018
- 2018-03-05 DE DE102018001725.8A patent/DE102018001725A1/en not_active Withdrawn
-
2019
- 2019-02-18 EP EP19157616.4A patent/EP3536952B1/en active Active
Patent Citations (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE19959022C1 (en) * | 1999-12-08 | 2001-06-21 | Bosch Gmbh Robert | Drive unit for hydraulic pressure source e.g. for automobile servo steering system, has electric motor enclosed by separate motor hood anchored to flange plate of pressure source |
EP1666726A2 (en) * | 2004-12-04 | 2006-06-07 | Hydac Fluidtechnik GmbH | Modular system for fluid pumps |
DE202005005620U1 (en) * | 2005-04-08 | 2006-08-17 | Hawe Hydraulik Gmbh & Co. Kg | pump unit |
EP2241753A1 (en) * | 2009-04-15 | 2010-10-20 | HAWE Hydraulik SE | Motor pump unit |
DE102016010669A1 (en) * | 2016-08-29 | 2018-03-01 | Hydac Fluidtechnik Gmbh | Motor-pump device |
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DE102018001725A1 (en) | 2019-09-05 |
EP3536952B1 (en) | 2022-10-12 |
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